Fixes #20978 for supported platforms (i.e. non-Android POSIX).
This uses `backtrace_pcinfo` to inspect the DWARF debug info and list the file and line pairs for given stack frame. Such pair is not unique due to the presence of inlined functions and the updated routine correctly handles this case. The code is modelled after libbacktrace's `backtrace_full` routine.
There is one known issue with this approach. Macros, when invoked, take over the current frame and shadows the file and line pair which has invoked a macro. In particular, this makes many panicking
macros a bit harder to inspect. This really is a debuginfo problem, and the backtrace routine should print them correctly with a correct debuginfo.
Some example trace:
```
thread '<main>' panicked at 'explicit panic', /home/arachneng/Works/git/rust/src/test/run-pass/backtrace-debuginfo.rs:74
stack backtrace:
1: 0xd964702f - sys::backtrace::write::h32d93fffb64131b2yxC
2: 0xd9670202 - panicking::on_panic::h3a4fcb37b873aefeooM
3: 0xd95b396a - rt::unwind::begin_unwind_inner::h576b3df5f626902dJ2L
4: 0xd9eb88df - rt::unwind::begin_unwind::h16852273847167740350
5: 0xd9eb8afb - aux::callback::h15056955655605709172
at /home/arachneng/Works/git/rust/<std macros>:3
at src/test/run-pass/backtrace-debuginfo-aux.rs:15
6: 0xd9eb8caa - outer::h2cf96412459fceb6ema
at src/test/run-pass/backtrace-debuginfo.rs:73
at src/test/run-pass/backtrace-debuginfo.rs:88
7: 0xd9ebab24 - main::h3f701287441442edasa
at src/test/run-pass/backtrace-debuginfo.rs:134
8: 0xd96daba8 - rust_try_inner
9: 0xd96dab95 - rust_try
10: 0xd9671af4 - rt::lang_start::h7da0de9529b4c394liM
11: 0xd8f3aec4 - __libc_start_main
12: 0xd9eb8148 - <unknown>
13: 0xffffffff - <unknown>
```
log graphviz core rbml alloc \
unicode rustc_bitflags
RUSTC_CRATES := rustc rustc_typeck rustc_borrowck rustc_resolve rustc_driver \
- rustc_trans rustc_back rustc_llvm rustc_privacy
+ rustc_trans rustc_back rustc_llvm rustc_privacy rustc_lint
HOST_CRATES := syntax $(RUSTC_CRATES) rustdoc fmt_macros
CRATES := $(TARGET_CRATES) $(HOST_CRATES)
TOOLS := compiletest rustdoc rustc rustbook
DEPS_syntax := std term serialize log fmt_macros arena libc
DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
rustc_typeck rustc_resolve log syntax serialize rustc_llvm \
- rustc_trans rustc_privacy
+ rustc_trans rustc_privacy rustc_lint
DEPS_rustc_trans := arena flate getopts graphviz libc rustc rustc_back \
log syntax serialize rustc_llvm
DEPS_rustc_borrowck := rustc log graphviz syntax
DEPS_rustc_resolve := rustc log syntax
DEPS_rustc_privacy := rustc log syntax
+DEPS_rustc_lint := rustc log syntax
DEPS_rustc := syntax flate arena serialize getopts rbml \
log graphviz rustc_llvm rustc_back
DEPS_rustc_llvm := native:rustllvm libc std
DEPS_rustc_back := std syntax rustc_llvm flate log libc
DEPS_rustdoc := rustc rustc_driver native:hoedown serialize getopts \
- test
+ test rustc_lint
DEPS_rustc_bitflags := core
DEPS_flate := std native:miniz
DEPS_arena := std
$(filter-out rustc_resolve, \
$(filter-out rustc_driver, \
$(filter-out rustc_privacy, \
+ $(filter-out rustc_lint, \
$(filter-out log, \
$(filter-out getopts, \
- $(filter-out syntax, $(CRATES)))))))))))
+ $(filter-out syntax, $(CRATES))))))))))))
COMPILER_DOC_CRATES := rustc rustc_trans rustc_borrowck rustc_resolve \
- rustc_typeck rustc_driver syntax rustc_privacy
+ rustc_typeck rustc_driver syntax rustc_privacy \
+ rustc_lint
# This macro creates some simple definitions for each crate being built, just
# some munging of all of the parameters above.
TEST_TARGET_CRATES = $(filter-out core unicode,$(TARGET_CRATES)) coretest
TEST_DOC_CRATES = $(DOC_CRATES)
-TEST_HOST_CRATES = $(filter-out rustc_typeck rustc_borrowck rustc_resolve rustc_trans,\
+TEST_HOST_CRATES = $(filter-out rustc_typeck rustc_borrowck rustc_resolve rustc_trans rustc_lint,\
$(HOST_CRATES))
TEST_CRATES = $(TEST_TARGET_CRATES) $(TEST_HOST_CRATES)
* [Language Design FAQ](complement-design-faq.html)
* [Language FAQ](complement-lang-faq.html)
* [Project FAQ](complement-project-faq.html)
-* [How to submit a bug report](complement-bugreport.html)
+* [How to submit a bug report](https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports)
# The standard library
A _character literal_ is a single Unicode character enclosed within two
`U+0027` (single-quote) characters, with the exception of `U+0027` itself,
-which must be _escaped_ by a preceding U+005C character (`\`).
+which must be _escaped_ by a preceding `U+005C` character (`\`).
##### String literals
which must be _escaped_ by a preceding `U+005C` character (`\`), or a _raw
string literal_.
+A multi-line string literal may be defined by terminating each line with a
+`U+005C` character (`\`) immediately before the newline. This causes the
+`U+005C` character, the newline, and all whitespace at the beginning of the
+next line to be ignored.
+
+```rust
+let a = "foobar";
+let b = "foo\
+ bar";
+
+assert_eq!(a,b);
+```
+
##### Character escapes
Some additional _escapes_ are available in either character or non-raw string
pairs when they occur at the beginning of, or immediately after, a `$(...)*`;
requiring a distinctive token in front can solve the problem.
-## Syntax extensions useful for the macro author
+## Syntax extensions useful in macros
-* `log_syntax!` : print out the arguments at compile time
-* `trace_macros!` : supply `true` or `false` to enable or disable macro expansion logging
* `stringify!` : turn the identifier argument into a string literal
* `concat!` : concatenates a comma-separated list of literals
-* `concat_idents!` : create a new identifier by concatenating the arguments
-The following attributes are used for quasiquoting in procedural macros:
+## Syntax extensions for macro debugging
+
+* `log_syntax!` : print out the arguments at compile time
+* `trace_macros!` : supply `true` or `false` to enable or disable macro expansion logging
+
+## Quasiquoting
+
+The following syntax extensions are used for quasiquoting Rust syntax trees,
+usually in [procedural macros](book/plugins.html#syntax-extensions):
* `quote_expr!`
* `quote_item!`
* `quote_tokens!`
* `quote_ty!`
+Documentation is very limited at the moment.
+
# Crates and source files
Rust is a *compiled* language. Its semantics obey a *phase distinction*
only appear at the root of your crate, not inside `mod`. This ensures that
`$crate` is a single identifier.
-# A final note
+# The deep end
-Macros, as currently implemented, are not for the faint of heart. Even
-ordinary syntax errors can be more difficult to debug when they occur inside a
-macro, and errors caused by parse problems in generated code can be very
-tricky. Invoking the `log_syntax!` macro can help elucidate intermediate
-states, invoking `trace_macros!(true)` will automatically print those
-intermediate states out, and passing the flag `--pretty expanded` as a
-command-line argument to the compiler will show the result of expansion.
+The introductory chapter mentioned recursive macros, but it did not give the
+full story. Recursive macros are useful for another reason: Each recursive
+invocation gives you another opportunity to pattern-match the macro's
+arguments.
+
+As an extreme example, it is possible, though hardly advisable, to implement
+the [Bitwise Cyclic Tag](http://esolangs.org/wiki/Bitwise_Cyclic_Tag) automaton
+within Rust's macro system.
+
+```rust
+#![feature(trace_macros)]
+
+macro_rules! bct {
+ // cmd 0: d ... => ...
+ (0, $($ps:tt),* ; $_d:tt)
+ => (bct!($($ps),*, 0 ; ));
+ (0, $($ps:tt),* ; $_d:tt, $($ds:tt),*)
+ => (bct!($($ps),*, 0 ; $($ds),*));
+
+ // cmd 1p: 1 ... => 1 ... p
+ (1, $p:tt, $($ps:tt),* ; 1)
+ => (bct!($($ps),*, 1, $p ; 1, $p));
+ (1, $p:tt, $($ps:tt),* ; 1, $($ds:tt),*)
+ => (bct!($($ps),*, 1, $p ; 1, $($ds),*, $p));
+
+ // cmd 1p: 0 ... => 0 ...
+ (1, $p:tt, $($ps:tt),* ; $($ds:tt),*)
+ => (bct!($($ps),*, 1, $p ; $($ds),*));
+
+ // halt on empty data string
+ ( $($ps:tt),* ; )
+ => (());
+}
+
+fn main() {
+ trace_macros!(true);
+# /* just check the definition
+ bct!(0, 0, 1, 1, 1 ; 1, 0, 1);
+# */
+}
+```
+
+Exercise: use macros to reduce duplication in the above definition of the
+`bct!` macro.
+
+# Procedural macros
If Rust's macro system can't do what you need, you may want to write a
[compiler plugin](plugins.html) instead. Compared to `macro_rules!`
macros, this is significantly more work, the interfaces are much less stable,
-and the warnings about debugging apply ten-fold. In exchange you get the
+and bugs can be much harder to track down. In exchange you get the
flexibility of running arbitrary Rust code within the compiler. Syntax
extension plugins are sometimes called *procedural macros* for this reason.
.ok()
.expect("Failed to read line");
```
+
`ok()` converts the `IoResult` into an `Option`, and `expect()` does the same
thing as `unwrap()`, but takes a message. This message is passed along to the
underlying `panic!`, providing a better error message if the code errors.
+
+# Using `try!`
+
+When writing code that calls many functions that return the `Result` type, the
+error handling can be tedious. The `try!` macro hides some of the boilerplate
+of propagating errors up the call stack.
+
+It replaces this:
+
+```rust
+use std::fs::File;
+use std::io;
+use std::io::prelude::*;
+
+struct Info {
+ name: String,
+ age: i32,
+ rating: i32,
+}
+
+fn write_info(info: &Info) -> io::Result<()> {
+ let mut file = File::open("my_best_friends.txt").unwrap();
+
+ if let Err(e) = writeln!(&mut file, "name: {}", info.name) {
+ return Err(e)
+ }
+ if let Err(e) = writeln!(&mut file, "age: {}", info.age) {
+ return Err(e)
+ }
+ if let Err(e) = writeln!(&mut file, "rating: {}", info.rating) {
+ return Err(e)
+ }
+
+ return Ok(());
+}
+```
+
+With this:
+
+```rust
+use std::fs::File;
+use std::io;
+use std::io::prelude::*;
+
+struct Info {
+ name: String,
+ age: i32,
+ rating: i32,
+}
+
+fn write_info(info: &Info) -> io::Result<()> {
+ let mut file = try!(File::open("my_best_friends.txt"));
+
+ try!(writeln!(&mut file, "name: {}", info.name));
+ try!(writeln!(&mut file, "age: {}", info.age));
+ try!(writeln!(&mut file, "rating: {}", info.rating));
+
+ return Ok(());
+}
+```
+
+Wrapping an expression in `try!` will result in the unwrapped success (`Ok`)
+value, unless the result is `Err`, in which case `Err` is returned early from
+the enclosing function.
+
+It's worth noting that you can only use `try!` from a function that returns a
+`Result`, which means that you cannot use `try!` inside of `main()`, because
+`main()` doesn't return anything.
+
+`try!` makes use of [`FromError`](../std/error/#the-fromerror-trait) to determine
+what to return in the error case.
README](https://github.com/rust-lang/cargo#installing-cargo-from-nightlies)
for specific instructions about installing it.
+## Converting to Cargo
+
Let's convert Hello World to Cargo.
To Cargo-ify our project, we need to do two things: Make a `Cargo.toml`
configuration file, and put our source file in the right place. Let's
do that part first:
-```{bash}
+```bash
$ mkdir src
$ mv main.rs src/main.rs
```
Next, our configuration file:
-```{bash}
+```bash
$ editor Cargo.toml
```
Once you have this file in place, we should be ready to build! Try this:
-```{bash}
+```bash
$ cargo build
Compiling hello_world v0.0.1 (file:///home/yourname/projects/hello_world)
$ ./target/hello_world
program is simple, it's using much of the real tooling that you'll use for the
rest of your Rust career.
+## A New Project
+
+You don't have to go through this whole process every time you want to start a new
+project! Cargo has the ability to make a bare-bones project directory in which you
+can start developing right away.
+
+To start a new project with Cargo, use `cargo new`:
+
+```bash
+$ cargo new hello_world --bin
+```
+
+We're passing `--bin` because we're making a binary program: if we
+were making a library, we'd leave it off.
+
+Let's check out what Cargo has generated for us:
+
+```bash
+$ cd hello_world
+$ tree .
+.
+├── Cargo.toml
+└── src
+ └── main.rs
+
+1 directory, 2 files
+```
+
+If you don't have the `tree` command, you can probably get it from your distro's package
+manager. It's not necessary, but it's certainly useful.
+
+This is all we need to get started. First, let's check out `Cargo.toml`:
+
+```toml
+[package]
+
+name = "hello_world"
+version = "0.0.1"
+authors = ["Your Name <you@example.com>"]
+```
+
+Cargo has populated this file with reasonable defaults based off the arguments you gave
+it and your `git` global configuration. You may notice that Cargo has also initialized
+the `hello_world` directory as a `git` repository.
+
+Here's what's in `src/main.rs`:
+
+```rust
+fn main() {
+ println!("Hello, world!");
+}
+```
+
+Cargo has generated a "Hello World!" for us, and you're ready to start coding! A
+much more in-depth guide to Cargo can be found [here](http://doc.crates.io/guide.html).
+
Now that you've got the tools down, let's actually learn more about the Rust
language itself. These are the basics that will serve you well through the rest
-of your time with Rust.
+of your time with Rust.
\ No newline at end of file
};
}
# fn main() {
-# assert_eq!(&[1,2,3], &vec![1,2,3]);
+# assert_eq!([1,2,3], vec![1,2,3]);
# }
```
## Repetition
-The repetition behavior can seem somewhat magical, especially when multiple
-names are bound at multiple nested levels of repetition. The two rules to keep
-in mind are:
+The repetition operator follows two principal rules:
-1. the behavior of `$(...)*` is to walk through one "layer" of repetitions, for
-all of the `$name`s it contains, in lockstep, and
+1. `$(...)*` walks through one "layer" of repetitions, for all of the `$name`s
+ it contains, in lockstep, and
2. each `$name` must be under at least as many `$(...)*`s as it was matched
-against. If it is under more, it'll be duplicated, as appropriate.
+ against. If it is under more, it'll be duplicated, as appropriate.
This baroque macro illustrates the duplication of variables from outer
repetition levels.
more" match. Both forms optionally include a separator, which can be any token
except `+` or `*`.
+This system is based on
+"[Macro-by-Example](http://www.cs.indiana.edu/ftp/techreports/TR206.pdf)"
+(PDF link).
+
# Hygiene
Some languages implement macros using simple text substitution, which leads to
})
```
-This looks reasonable, but watch what happens in this example:
+Here's a simple use case that goes terribly wrong:
```text
const char *state = "reticulating splines";
-LOG(state);
+LOG(state)
```
-The program will likely segfault, after it tries to execute
+This expands to
```text
-printf("log(%d): %s\n", state, state);
+const char *state = "reticulating splines";
+int state = get_log_state();
+if (state > 0) {
+ printf("log(%d): %s\n", state, state);
+}
```
+The second variable named `state` shadows the first one. This is a problem
+because the print statement should refer to both of them.
+
The equivalent Rust macro has the desired behavior.
```rust
[items]: ../reference.html#items
+# Recursive macros
+
+A macro's expansion can include more macro invocations, including invocations
+of the very same macro being expanded. These recursive macros are useful for
+processing tree-structured input, as illustrated by this (simplistic) HTML
+shorthand:
+
+```rust
+# #![allow(unused_must_use)]
+macro_rules! write_html {
+ ($w:expr, ) => (());
+
+ ($w:expr, $e:tt) => (write!($w, "{}", $e));
+
+ ($w:expr, $tag:ident [ $($inner:tt)* ] $($rest:tt)*) => {{
+ write!($w, "<{}>", stringify!($tag));
+ write_html!($w, $($inner)*);
+ write!($w, "</{}>", stringify!($tag));
+ write_html!($w, $($rest)*);
+ }};
+}
+
+fn main() {
+# // FIXME(#21826)
+ use std::fmt::Write;
+ let mut out = String::new();
+
+ write_html!(&mut out,
+ html[
+ head[title["Macros guide"]]
+ body[h1["Macros are the best!"]]
+ ]);
+
+ assert_eq!(out,
+ "<html><head><title>Macros guide</title></head>\
+ <body><h1>Macros are the best!</h1></body></html>");
+}
+```
+
+# Debugging macro code
+
+To see the results of expanding macros, run `rustc --pretty expanded`. The
+output represents a whole crate, so you can also feed it back in to `rustc`,
+which will sometimes produce better error messages than the original
+compilation. Note that the `--pretty expanded` output may have a different
+meaning if multiple variables of the same name (but different syntax contexts)
+are in play in the same scope. In this case `--pretty expanded,hygiene` will
+tell you about the syntax contexts.
+
+`rustc` provides two syntax extensions that help with macro debugging. For now,
+they are unstable and require feature gates.
+
+* `log_syntax!(...)` will print its arguments to standard output, at compile
+ time, and "expand" to nothing.
+
+* `trace_macros!(true)` will enable a compiler message every time a macro is
+ expanded. Use `trace_macros!(false)` later in expansion to turn it off.
+
# Further reading
The [advanced macros chapter][] goes into more detail about macro syntax. It
## Tips and tricks
-To see the results of expanding syntax extensions, run
-`rustc --pretty expanded`. The output represents a whole crate, so you
-can also feed it back in to `rustc`, which will sometimes produce better
-error messages than the original compilation. Note that the
-`--pretty expanded` output may have a different meaning if multiple
-variables of the same name (but different syntax contexts) are in play
-in the same scope. In this case `--pretty expanded,hygiene` will tell
-you about the syntax contexts.
+Some of the [macro debugging tips](macros.html#debugging-macro-code) are applicable.
You can use [`syntax::parse`](../syntax/parse/index.html) to turn token trees into
higher-level syntax elements like expressions:
[`DummyResult`](../syntax/ext/base/struct.DummyResult.html),
so that the compiler can continue and find further errors.
+To print syntax fragments for debugging, you can use
+[`span_note`](../syntax/ext/base/struct.ExtCtxt.html#method.span_note) together
+with
+[`syntax::print::pprust::*_to_string`](http://doc.rust-lang.org/syntax/print/pprust/index.html#functions).
+
The example above produced an integer literal using
[`AstBuilder::expr_uint`](../syntax/ext/build/trait.AstBuilder.html#tymethod.expr_uint).
As an alternative to the `AstBuilder` trait, `libsyntax` provides a set of
highlights for example. If you want to simply check the presence of
given node or attribute, use an empty string (`""`) as a `PATTERN`.
+* `@count PATH XPATH COUNT' checks for the occurrence of given XPath
+ in the given file. The number of occurrences must match the given count.
+
All conditions can be negated with `!`. `@!has foo/type.NoSuch.html`
checks if the given file does not exist, for example.
return ret
+def check_tree_count(tree, path, count):
+ path = normalize_xpath(path)
+ return len(tree.findall(path)) == count
+
+
def check(target, commands):
cache = CachedFiles(target)
for c in commands:
raise RuntimeError('Invalid number of @{} arguments \
at line {}'.format(c.cmd, c.lineno))
+ elif c.cmd == 'count': # count test
+ if len(c.args) == 3: # @count <path> <pat> <count> = count test
+ ret = check_tree_count(cache.get_tree(c.args[0]), c.args[1], int(c.args[2]))
+ else:
+ raise RuntimeError('Invalid number of @{} arguments \
+ at line {}'.format(c.cmd, c.lineno))
+
elif c.cmd == 'valid-html':
raise RuntimeError('Unimplemented @valid-html at line {}'.format(c.lineno))
unsafe impl<T: Sync + Send> Send for Weak<T> { }
unsafe impl<T: Sync + Send> Sync for Weak<T> { }
+#[stable(feature = "rust1", since = "1.0.0")]
+impl<T: fmt::Debug> fmt::Debug for Weak<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ write!(f, "(Weak)")
+ }
+}
+
struct ArcInner<T> {
strong: atomic::AtomicUsize,
weak: atomic::AtomicUsize,
libc::realloc(ptr as *mut libc::c_void, size as libc::size_t) as *mut u8
} else {
let new_ptr = allocate(size, align);
- ptr::copy_memory(new_ptr, ptr, cmp::min(size, old_size));
+ ptr::copy(new_ptr, ptr, cmp::min(size, old_size));
deallocate(ptr, old_size, align);
new_ptr
}
#![feature(unboxed_closures)]
#![feature(unsafe_no_drop_flag)]
#![feature(core)]
+#![feature(unique)]
#![cfg_attr(test, feature(test, alloc, rustc_private))]
#![cfg_attr(all(not(feature = "external_funcs"), not(feature = "external_crate")),
feature(libc))]
/// heap.push(3);
///
/// let vec = heap.into_sorted_vec();
- /// assert_eq!(vec, vec![1, 2, 3, 4, 5, 6, 7]);
+ /// assert_eq!(vec, [1, 2, 3, 4, 5, 6, 7]);
/// ```
pub fn into_sorted_vec(mut self) -> Vec<T> {
let mut end = self.len();
/// let mut bv = BitVec::from_elem(3, true);
/// bv.set(1, false);
///
- /// assert_eq!(bv.to_bytes(), vec!(0b10100000));
+ /// assert_eq!(bv.to_bytes(), [0b10100000]);
///
/// let mut bv = BitVec::from_elem(9, false);
/// bv.set(2, true);
/// bv.set(8, true);
///
- /// assert_eq!(bv.to_bytes(), vec!(0b00100000, 0b10000000));
+ /// assert_eq!(bv.to_bytes(), [0b00100000, 0b10000000]);
/// ```
pub fn to_bytes(&self) -> Vec<u8> {
fn bit(bit_vec: &BitVec, byte: usize, bit: usize) -> u8 {
/// let mut bv = BitVec::from_bytes(&[0b01001011]);
/// bv.grow(2, true);
/// assert_eq!(bv.len(), 10);
- /// assert_eq!(bv.to_bytes(), vec!(0b01001011, 0b11000000));
+ /// assert_eq!(bv.to_bytes(), [0b01001011, 0b11000000]);
/// ```
pub fn grow(&mut self, n: usize, value: bool) {
// Note: we just bulk set all the bits in the last word in this fn in multiple places
impl fmt::Debug for BitVec {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
for bit in self {
- try!(write!(fmt, "{}", if bit { 1u32 } else { 0u32 }));
+ try!(write!(fmt, "{}", if bit { 1 } else { 0 }));
}
Ok(())
}
#[stable(feature = "rust1", since = "1.0.0")]
impl fmt::Debug for BitSet {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(fmt, "BitSet {{"));
+ try!(write!(fmt, "{{"));
let mut first = true;
for n in self {
if !first {
fn test_to_bytes() {
let mut bv = BitVec::from_elem(3, true);
bv.set(1, false);
- assert_eq!(bv.to_bytes(), vec!(0b10100000));
+ assert_eq!(bv.to_bytes(), [0b10100000]);
let mut bv = BitVec::from_elem(9, false);
bv.set(2, true);
bv.set(8, true);
- assert_eq!(bv.to_bytes(), vec!(0b00100000, 0b10000000));
+ assert_eq!(bv.to_bytes(), [0b00100000, 0b10000000]);
}
#[test]
s.insert(10);
s.insert(50);
s.insert(2);
- assert_eq!("BitSet {1, 2, 10, 50}", format!("{:?}", s));
+ assert_eq!("{1, 2, 10, 50}", format!("{:?}", s));
}
#[test]
let bit_vec: BitSet = usizes.into_iter().collect();
let idxs: Vec<_> = bit_vec.iter().collect();
- assert_eq!(idxs, vec![0, 2, 3]);
+ assert_eq!(idxs, [0, 2, 3]);
let long: BitSet = (0..10000).filter(|&n| n % 2 == 0).collect();
let real: Vec<_> = range_step(0, 10000, 2).collect();
let result = stack.with(move |pusher, node| {
// Same basic logic as found in `find`, but with PartialSearchStack mediating the
// actual nodes for us
- return match Node::search(node, &key) {
+ match Node::search(node, &key) {
Found(mut handle) => {
// Perfect match, swap the values and return the old one
mem::swap(handle.val_mut(), &mut value);
}
});
match result {
- Finished(ret) => { return ret; },
+ Finished(ret) => return ret,
Continue((new_stack, renewed_key, renewed_val)) => {
stack = new_stack;
key = renewed_key;
let mut stack = stack::PartialSearchStack::new(self);
loop {
let result = stack.with(move |pusher, node| {
- return match Node::search(node, key) {
+ match Node::search(node, key) {
Found(handle) => {
// Perfect match. Terminate the stack here, and remove the entry
Finished(Some(pusher.seal(handle).remove()))
#[stable(feature = "rust1", since = "1.0.0")]
impl<K: Debug, V: Debug> Debug for BTreeMap<K, V> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "BTreeMap {{"));
+ try!(write!(f, "{{"));
for (i, (k, v)) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
/// a.insert(2, "b");
///
/// let keys: Vec<usize> = a.keys().cloned().collect();
- /// assert_eq!(keys, vec![1,2,]);
+ /// assert_eq!(keys, [1, 2]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn keys<'a>(&'a self) -> Keys<'a, K, V> {
/// a.insert(2, "b");
///
/// let values: Vec<&str> = a.values().cloned().collect();
- /// assert_eq!(values, vec!["a","b"]);
+ /// assert_eq!(values, ["a", "b"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn values<'a>(&'a self) -> Values<'a, K, V> {
let mut stack = stack::PartialSearchStack::new(self);
loop {
let result = stack.with(move |pusher, node| {
- return match Node::search(node, &key) {
+ match Node::search(node, &key) {
Found(handle) => {
// Perfect match
Finished(Occupied(OccupiedEntry {
vals: RawItems::from_slice(self.vals()),
edges: RawItems::from_slice(self.edges()),
- ptr: *self.keys as *mut u8,
+ ptr: Unique::new(*self.keys as *mut u8),
capacity: self.capacity(),
is_leaf: self.is_leaf()
},
// This must be followed by insert_edge on an internal node.
#[inline]
unsafe fn insert_kv(&mut self, index: usize, key: K, val: V) -> &mut V {
- ptr::copy_memory(
+ ptr::copy(
self.keys_mut().as_mut_ptr().offset(index as isize + 1),
self.keys().as_ptr().offset(index as isize),
self.len() - index
);
- ptr::copy_memory(
+ ptr::copy(
self.vals_mut().as_mut_ptr().offset(index as isize + 1),
self.vals().as_ptr().offset(index as isize),
self.len() - index
// This can only be called immediately after a call to insert_kv.
#[inline]
unsafe fn insert_edge(&mut self, index: usize, edge: Node<K, V>) {
- ptr::copy_memory(
+ ptr::copy(
self.edges_mut().as_mut_ptr().offset(index as isize + 1),
self.edges().as_ptr().offset(index as isize),
self.len() - index
let key = ptr::read(self.keys().get_unchecked(index));
let val = ptr::read(self.vals().get_unchecked(index));
- ptr::copy_memory(
+ ptr::copy(
self.keys_mut().as_mut_ptr().offset(index as isize),
self.keys().as_ptr().offset(index as isize + 1),
self.len() - index - 1
);
- ptr::copy_memory(
+ ptr::copy(
self.vals_mut().as_mut_ptr().offset(index as isize),
self.vals().as_ptr().offset(index as isize + 1),
self.len() - index - 1
unsafe fn remove_edge(&mut self, index: usize) -> Node<K, V> {
let edge = ptr::read(self.edges().get_unchecked(index));
- ptr::copy_memory(
+ ptr::copy(
self.edges_mut().as_mut_ptr().offset(index as isize),
self.edges().as_ptr().offset(index as isize + 1),
self.len() - index + 1
unsafe {
right._len = self.len() / 2;
let right_offset = self.len() - right.len();
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
right.keys_mut().as_mut_ptr(),
self.keys().as_ptr().offset(right_offset as isize),
right.len()
);
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
right.vals_mut().as_mut_ptr(),
self.vals().as_ptr().offset(right_offset as isize),
right.len()
);
if !self.is_leaf() {
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
right.edges_mut().as_mut_ptr(),
self.edges().as_ptr().offset(right_offset as isize),
right.len() + 1
ptr::write(self.keys_mut().get_unchecked_mut(old_len), key);
ptr::write(self.vals_mut().get_unchecked_mut(old_len), val);
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
self.keys_mut().as_mut_ptr().offset(old_len as isize + 1),
right.keys().as_ptr(),
right.len()
);
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
self.vals_mut().as_mut_ptr().offset(old_len as isize + 1),
right.vals().as_ptr(),
right.len()
);
if !self.is_leaf() {
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
self.edges_mut().as_mut_ptr().offset(old_len as isize + 1),
right.edges().as_ptr(),
right.len() + 1
edges: RawItems<Node<K, V>>,
// For deallocation when we are done iterating.
- ptr: *mut u8,
+ ptr: Unique<u8>,
capacity: usize,
is_leaf: bool
}
+unsafe impl<K: Sync, V: Sync> Sync for MoveTraversalImpl<K, V> {}
+unsafe impl<K: Send, V: Send> Send for MoveTraversalImpl<K, V> {}
+
impl<K, V> TraversalImpl for MoveTraversalImpl<K, V> {
type Item = (K, V);
type Edge = Node<K, V>;
let (alignment, size) =
calculate_allocation_generic::<K, V>(self.capacity, self.is_leaf);
- unsafe { heap::deallocate(self.ptr, size, alignment) };
+ unsafe { heap::deallocate(*self.ptr, size, alignment) };
}
}
/// A traversal over a node's entries and edges
pub type Traversal<'a, K, V> = AbsTraversal<ElemsAndEdges<Zip<slice::Iter<'a, K>,
slice::Iter<'a, V>>,
- slice::Iter<'a, Node<K, V>>>>;
+ slice::Iter<'a, Node<K, V>>>>;
/// A mutable traversal over a node's entries and edges
pub type MutTraversal<'a, K, V> = AbsTraversal<ElemsAndEdges<Zip<slice::Iter<'a, K>,
slice::IterMut<'a, V>>,
- slice::IterMut<'a, Node<K, V>>>>;
+ slice::IterMut<'a, Node<K, V>>>>;
/// An owning traversal over a node's entries and edges
pub type MoveTraversal<K, V> = AbsTraversal<MoveTraversalImpl<K, V>>;
/// }
///
/// let v: Vec<usize> = set.iter().cloned().collect();
- /// assert_eq!(v, vec![1,2,3,4]);
+ /// assert_eq!(v, [1, 2, 3, 4]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn iter(&self) -> Iter<T> {
/// let set: BTreeSet<usize> = [1, 2, 3, 4].iter().cloned().collect();
///
/// let v: Vec<usize> = set.into_iter().collect();
- /// assert_eq!(v, vec![1,2,3,4]);
+ /// assert_eq!(v, [1, 2, 3, 4]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn into_iter(self) -> IntoIter<T> {
/// b.insert(3);
///
/// let diff: Vec<usize> = a.difference(&b).cloned().collect();
- /// assert_eq!(diff, vec![1]);
+ /// assert_eq!(diff, [1]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn difference<'a>(&'a self, other: &'a BTreeSet<T>) -> Difference<'a, T> {
/// b.insert(3);
///
/// let sym_diff: Vec<usize> = a.symmetric_difference(&b).cloned().collect();
- /// assert_eq!(sym_diff, vec![1,3]);
+ /// assert_eq!(sym_diff, [1, 3]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn symmetric_difference<'a>(&'a self, other: &'a BTreeSet<T>)
/// b.insert(3);
///
/// let intersection: Vec<usize> = a.intersection(&b).cloned().collect();
- /// assert_eq!(intersection, vec![2]);
+ /// assert_eq!(intersection, [2]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn intersection<'a>(&'a self, other: &'a BTreeSet<T>)
/// b.insert(2);
///
/// let union: Vec<usize> = a.union(&b).cloned().collect();
- /// assert_eq!(union, vec![1,2]);
+ /// assert_eq!(union, [1, 2]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn union<'a>(&'a self, other: &'a BTreeSet<T>) -> Union<'a, T> {
///
/// let result = &a - &b;
/// let result_vec: Vec<_> = result.into_iter().collect();
- /// assert_eq!(result_vec, vec![1, 2]);
+ /// assert_eq!(result_vec, [1, 2]);
/// ```
fn sub(self, rhs: &BTreeSet<T>) -> BTreeSet<T> {
self.difference(rhs).cloned().collect()
///
/// let result = &a ^ &b;
/// let result_vec: Vec<_> = result.into_iter().collect();
- /// assert_eq!(result_vec, vec![1, 4]);
+ /// assert_eq!(result_vec, [1, 4]);
/// ```
fn bitxor(self, rhs: &BTreeSet<T>) -> BTreeSet<T> {
self.symmetric_difference(rhs).cloned().collect()
///
/// let result = &a & &b;
/// let result_vec: Vec<_> = result.into_iter().collect();
- /// assert_eq!(result_vec, vec![2, 3]);
+ /// assert_eq!(result_vec, [2, 3]);
/// ```
fn bitand(self, rhs: &BTreeSet<T>) -> BTreeSet<T> {
self.intersection(rhs).cloned().collect()
///
/// let result = &a | &b;
/// let result_vec: Vec<_> = result.into_iter().collect();
- /// assert_eq!(result_vec, vec![1, 2, 3, 4, 5]);
+ /// assert_eq!(result_vec, [1, 2, 3, 4, 5]);
/// ```
fn bitor(self, rhs: &BTreeSet<T>) -> BTreeSet<T> {
self.union(rhs).cloned().collect()
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: Debug> Debug for BTreeSet<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "BTreeSet {{"));
+ try!(write!(f, "{{"));
for (i, x) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
let set_str = format!("{:?}", set);
- assert_eq!(set_str, "BTreeSet {1, 2}");
- assert_eq!(format!("{:?}", empty), "BTreeSet {}");
+ assert_eq!(set_str, "{1, 2}");
+ assert_eq!(format!("{:?}", empty), "{}");
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<E:CLike + fmt::Debug> fmt::Debug for EnumSet<E> {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(fmt, "EnumSet {{"));
+ try!(write!(fmt, "{{"));
let mut first = true;
for e in self {
if !first {
#[test]
fn test_show() {
let mut e = EnumSet::new();
- assert!(format!("{:?}", e) == "EnumSet {}");
+ assert!(format!("{:?}", e) == "{}");
e.insert(A);
- assert!(format!("{:?}", e) == "EnumSet {A}");
+ assert!(format!("{:?}", e) == "{A}");
e.insert(C);
- assert!(format!("{:?}", e) == "EnumSet {A, C}");
+ assert!(format!("{:?}", e) == "{A, C}");
}
#[test]
e1.insert(A);
let elems: ::vec::Vec<_> = e1.iter().collect();
- assert_eq!(vec![A], elems);
+ assert_eq!([A], elems);
e1.insert(C);
let elems: ::vec::Vec<_> = e1.iter().collect();
- assert_eq!(vec![A,C], elems);
+ assert_eq!([A,C], elems);
e1.insert(C);
let elems: ::vec::Vec<_> = e1.iter().collect();
- assert_eq!(vec![A,C], elems);
+ assert_eq!([A,C], elems);
e1.insert(B);
let elems: ::vec::Vec<_> = e1.iter().collect();
- assert_eq!(vec![A,B,C], elems);
+ assert_eq!([A,B,C], elems);
}
///////////////////////////////////////////////////////////////////////////
let e_union = e1 | e2;
let elems: ::vec::Vec<_> = e_union.iter().collect();
- assert_eq!(vec![A,B,C], elems);
+ assert_eq!([A,B,C], elems);
let e_intersection = e1 & e2;
let elems: ::vec::Vec<_> = e_intersection.iter().collect();
- assert_eq!(vec![C], elems);
+ assert_eq!([C], elems);
// Another way to express intersection
let e_intersection = e1 - (e1 - e2);
let elems: ::vec::Vec<_> = e_intersection.iter().collect();
- assert_eq!(vec![C], elems);
+ assert_eq!([C], elems);
let e_subtract = e1 - e2;
let elems: ::vec::Vec<_> = e_subtract.iter().collect();
- assert_eq!(vec![A], elems);
+ assert_eq!([A], elems);
// Bitwise XOR of two sets, aka symmetric difference
let e_symmetric_diff = e1 ^ e2;
let elems: ::vec::Vec<_> = e_symmetric_diff.iter().collect();
- assert_eq!(vec![A,B], elems);
+ assert_eq!([A,B], elems);
// Another way to express symmetric difference
let e_symmetric_diff = (e1 - e2) | (e2 - e1);
let elems: ::vec::Vec<_> = e_symmetric_diff.iter().collect();
- assert_eq!(vec![A,B], elems);
+ assert_eq!([A,B], elems);
// Yet another way to express symmetric difference
let e_symmetric_diff = (e1 | e2) - (e1 & e2);
let elems: ::vec::Vec<_> = e_symmetric_diff.iter().collect();
- assert_eq!(vec![A,B], elems);
+ assert_eq!([A,B], elems);
}
#[test]
#![feature(unboxed_closures)]
#![feature(unicode)]
#![feature(unsafe_destructor)]
+#![feature(unique)]
#![feature(unsafe_no_drop_flag)]
#![cfg_attr(test, feature(rand, rustc_private, test))]
#![cfg_attr(test, allow(deprecated))] // rand
}
impl<T> Copy for Rawlink<T> {}
-unsafe impl<T:'static+Send> Send for Rawlink<T> {}
-unsafe impl<T:Send+Sync> Sync for Rawlink<T> {}
+unsafe impl<T:Send> Send for Rawlink<T> {}
+unsafe impl<T:Sync> Sync for Rawlink<T> {}
struct Node<T> {
next: Link<T>,
/// }
/// {
/// let vec: Vec<_> = list.into_iter().collect();
- /// assert_eq!(vec, vec![1, 2, 3, 4]);
+ /// assert_eq!(vec, [1, 2, 3, 4]);
/// }
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
impl<A: fmt::Debug> fmt::Debug for LinkedList<A> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "LinkedList ["));
+ try!(write!(f, "["));
for (i, e) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
}
check_links(&m);
assert_eq!(m.len(), 3 + len * 2);
- assert_eq!(m.into_iter().collect::<Vec<_>>(), vec![-2,0,1,2,3,4,5,6,7,8,9,0,1]);
+ assert_eq!(m.into_iter().collect::<Vec<_>>(), [-2,0,1,2,3,4,5,6,7,8,9,0,1]);
}
#[test]
#[test]
fn test_show() {
let list: LinkedList<_> = (0..10).collect();
- assert_eq!(format!("{:?}", list), "LinkedList [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
+ assert_eq!(format!("{:?}", list), "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
let list: LinkedList<_> = vec!["just", "one", "test", "more"].iter().cloned().collect();
- assert_eq!(format!("{:?}", list), "LinkedList [\"just\", \"one\", \"test\", \"more\"]");
+ assert_eq!(format!("{:?}", list), "[\"just\", \"one\", \"test\", \"more\"]");
}
#[cfg(test)]
///
/// ```
/// let v = vec![1; 3];
-/// assert_eq!(v, vec![1, 1, 1]);
+/// assert_eq!(v, [1, 1, 1]);
/// ```
///
/// Note that unlike array expressions this syntax supports all elements
fn ends_with(&self, needle: &[Self::Item]) -> bool where Self::Item: PartialEq;
/// Convert `self` into a vector without clones or allocation.
- #[unstable(feature = "collections")]
+ #[stable(feature = "rust1", since = "1.0.0")]
fn into_vec(self: Box<Self>) -> Vec<Self::Item>;
}
if i != j {
let tmp = ptr::read(read_ptr);
- ptr::copy_memory(buf_v.offset(j + 1),
- &*buf_v.offset(j),
- (i - j) as usize);
- ptr::copy_nonoverlapping_memory(buf_v.offset(j),
- &tmp,
- 1);
+ ptr::copy(buf_v.offset(j + 1),
+ &*buf_v.offset(j),
+ (i - j) as usize);
+ ptr::copy_nonoverlapping(buf_v.offset(j), &tmp, 1);
mem::forget(tmp);
}
}
// j + 1 could be `len` (for the last `i`), but in
// that case, `i == j` so we don't copy. The
// `.offset(j)` is always in bounds.
- ptr::copy_memory(buf_dat.offset(j + 1),
- &*buf_dat.offset(j),
- i - j as usize);
- ptr::copy_nonoverlapping_memory(buf_dat.offset(j), read_ptr, 1);
+ ptr::copy(buf_dat.offset(j + 1),
+ &*buf_dat.offset(j),
+ i - j as usize);
+ ptr::copy_nonoverlapping(buf_dat.offset(j), read_ptr, 1);
}
}
}
if left == right_start {
// the number remaining in this run.
let elems = (right_end as usize - right as usize) / mem::size_of::<T>();
- ptr::copy_nonoverlapping_memory(out, &*right, elems);
+ ptr::copy_nonoverlapping(out, &*right, elems);
break;
} else if right == right_end {
let elems = (right_start as usize - left as usize) / mem::size_of::<T>();
- ptr::copy_nonoverlapping_memory(out, &*left, elems);
+ ptr::copy_nonoverlapping(out, &*left, elems);
break;
}
} else {
step(&mut left)
};
- ptr::copy_nonoverlapping_memory(out, &*to_copy, 1);
+ ptr::copy_nonoverlapping(out, &*to_copy, 1);
step(&mut out);
}
}
// write the result to `v` in one go, so that there are never two copies
// of the same object in `v`.
unsafe {
- ptr::copy_nonoverlapping_memory(v.as_mut_ptr(), &*buf_dat, len);
+ ptr::copy_nonoverlapping(v.as_mut_ptr(), &*buf_dat, len);
}
// increment the pointer, returning the old pointer.
let mut v = vec![1, 2, 3, 4, 5];
let mut e = v.swap_remove(0);
assert_eq!(e, 1);
- assert_eq!(v, vec![5, 2, 3, 4]);
+ assert_eq!(v, [5, 2, 3, 4]);
e = v.swap_remove(3);
assert_eq!(e, 4);
- assert_eq!(v, vec![5, 2, 3]);
+ assert_eq!(v, [5, 2, 3]);
}
#[test]
fn test_retain() {
let mut v = vec![1, 2, 3, 4, 5];
v.retain(is_odd);
- assert_eq!(v, vec![1, 3, 5]);
+ assert_eq!(v, [1, 3, 5]);
}
#[test]
let v: [Vec<i32>; 0] = [];
let c = v.concat();
assert_eq!(c, []);
- let d = [vec![1], vec![2,3]].concat();
- assert_eq!(d, vec![1, 2, 3]);
+ let d = [vec![1], vec![2, 3]].concat();
+ assert_eq!(d, [1, 2, 3]);
let v: &[&[_]] = &[&[1], &[2, 3]];
- assert_eq!(v.connect(&0), vec![1, 0, 2, 3]);
+ assert_eq!(v.connect(&0), [1, 0, 2, 3]);
let v: &[&[_]] = &[&[1], &[2], &[3]];
- assert_eq!(v.connect(&0), vec![1, 0, 2, 0, 3]);
+ assert_eq!(v.connect(&0), [1, 0, 2, 0, 3]);
}
#[test]
fn test_connect() {
let v: [Vec<i32>; 0] = [];
- assert_eq!(v.connect(&0), vec![]);
- assert_eq!([vec![1], vec![2, 3]].connect(&0), vec![1, 0, 2, 3]);
- assert_eq!([vec![1], vec![2], vec![3]].connect(&0), vec![1, 0, 2, 0, 3]);
+ assert_eq!(v.connect(&0), []);
+ assert_eq!([vec![1i], vec![2, 3]].connect(&0), [1, 0, 2, 3]);
+ assert_eq!([vec![1i], vec![2], vec![3]].connect(&0), [1, 0, 2, 0, 3]);
let v: [&[_]; 2] = [&[1], &[2, 3]];
- assert_eq!(v.connect(&0), vec![1, 0, 2, 3]);
+ assert_eq!(v.connect(&0), [1, 0, 2, 3]);
let v: [&[_]; 3] = [&[1], &[2], &[3]];
- assert_eq!(v.connect(&0), vec![1, 0, 2, 0, 3]);
+ assert_eq!(v.connect(&0), [1, 0, 2, 0, 3]);
}
#[test]
fn test_insert() {
let mut a = vec![1, 2, 4];
a.insert(2, 3);
- assert_eq!(a, vec![1, 2, 3, 4]);
+ assert_eq!(a, [1, 2, 3, 4]);
let mut a = vec![1, 2, 3];
a.insert(0, 0);
- assert_eq!(a, vec![0, 1, 2, 3]);
+ assert_eq!(a, [0, 1, 2, 3]);
let mut a = vec![1, 2, 3];
a.insert(3, 4);
- assert_eq!(a, vec![1, 2, 3, 4]);
+ assert_eq!(a, [1, 2, 3, 4]);
let mut a = vec![];
a.insert(0, 1);
- assert_eq!(a, vec![1]);
+ assert_eq!(a, [1]);
}
#[test]
let mut a = vec![1, 2, 3, 4];
assert_eq!(a.remove(2), 3);
- assert_eq!(a, vec![1, 2, 4]);
+ assert_eq!(a, [1, 2, 4]);
assert_eq!(a.remove(2), 4);
- assert_eq!(a, vec![1, 2]);
+ assert_eq!(a, [1, 2]);
assert_eq!(a.remove(0), 1);
- assert_eq!(a, vec![2]);
+ assert_eq!(a, [2]);
assert_eq!(a.remove(0), 2);
- assert_eq!(a, vec![]);
+ assert_eq!(a, []);
}
#[test]
let (left, right) = values.split_at_mut(2);
{
let left: &[_] = left;
- assert!(left[..left.len()] == [1, 2][]);
+ assert!(left[..left.len()] == [1, 2]);
}
for p in left {
*p += 1;
{
let right: &[_] = right;
- assert!(right[..right.len()] == [3, 4, 5][]);
+ assert!(right[..right.len()] == [3, 4, 5]);
}
for p in right {
*p += 2;
/// ```
/// let v: Vec<char> = "abc åäö".chars().collect();
///
- /// assert_eq!(v, vec!['a', 'b', 'c', ' ', 'å', 'ä', 'ö']);
+ /// assert_eq!(v, ['a', 'b', 'c', ' ', 'å', 'ä', 'ö']);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn chars(&self) -> Chars {
///
/// ```
/// let v: Vec<&str> = "Mary had a little lamb".split(' ').collect();
- /// assert_eq!(v, vec!["Mary", "had", "a", "little", "lamb"]);
+ /// assert_eq!(v, ["Mary", "had", "a", "little", "lamb"]);
///
/// let v: Vec<&str> = "".split('X').collect();
- /// assert_eq!(v, vec![""]);
+ /// assert_eq!(v, [""]);
/// ```
///
/// More complex patterns with a lambda:
///
/// ```
/// let v: Vec<&str> = "abc1def2ghi".split(|c: char| c.is_numeric()).collect();
- /// assert_eq!(v, vec!["abc", "def", "ghi"]);
+ /// assert_eq!(v, ["abc", "def", "ghi"]);
///
/// let v: Vec<&str> = "lionXXtigerXleopard".split('X').collect();
- /// assert_eq!(v, vec!["lion", "", "tiger", "leopard"]);
+ /// assert_eq!(v, ["lion", "", "tiger", "leopard"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn split<'a, P: Pattern<'a>>(&'a self, pat: P) -> Split<'a, P> {
///
/// ```
/// let v: Vec<&str> = "Mary had a little lambda".splitn(2, ' ').collect();
- /// assert_eq!(v, vec!["Mary", "had", "a little lambda"]);
+ /// assert_eq!(v, ["Mary", "had", "a little lambda"]);
///
/// let v: Vec<&str> = "lionXXtigerXleopard".splitn(2, 'X').collect();
- /// assert_eq!(v, vec!["lion", "", "tigerXleopard"]);
+ /// assert_eq!(v, ["lion", "", "tigerXleopard"]);
///
/// let v: Vec<&str> = "abcXdef".splitn(0, 'X').collect();
- /// assert_eq!(v, vec!["abcXdef"]);
+ /// assert_eq!(v, ["abcXdef"]);
///
/// let v: Vec<&str> = "".splitn(1, 'X').collect();
- /// assert_eq!(v, vec![""]);
+ /// assert_eq!(v, [""]);
/// ```
///
/// More complex patterns with a lambda:
///
/// ```
/// let v: Vec<&str> = "abc1def2ghi".splitn(1, |c: char| c.is_numeric()).collect();
- /// assert_eq!(v, vec!["abc", "def2ghi"]);
+ /// assert_eq!(v, ["abc", "def2ghi"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn splitn<'a, P: Pattern<'a>>(&'a self, count: usize, pat: P) -> SplitN<'a, P> {
///
/// ```
/// let v: Vec<&str> = "A.B.".split_terminator('.').collect();
- /// assert_eq!(v, vec!["A", "B"]);
+ /// assert_eq!(v, ["A", "B"]);
///
/// let v: Vec<&str> = "A..B..".split_terminator('.').collect();
- /// assert_eq!(v, vec!["A", "", "B", ""]);
+ /// assert_eq!(v, ["A", "", "B", ""]);
/// ```
///
/// More complex patterns with a lambda:
///
/// ```
/// let v: Vec<&str> = "abc1def2ghi3".split_terminator(|c: char| c.is_numeric()).collect();
- /// assert_eq!(v, vec!["abc", "def", "ghi"]);
+ /// assert_eq!(v, ["abc", "def", "ghi"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn split_terminator<'a, P: Pattern<'a>>(&'a self, pat: P) -> SplitTerminator<'a, P> {
///
/// ```
/// let v: Vec<&str> = "Mary had a little lamb".rsplitn(2, ' ').collect();
- /// assert_eq!(v, vec!["lamb", "little", "Mary had a"]);
+ /// assert_eq!(v, ["lamb", "little", "Mary had a"]);
///
/// let v: Vec<&str> = "lionXXtigerXleopard".rsplitn(2, 'X').collect();
- /// assert_eq!(v, vec!["leopard", "tiger", "lionX"]);
+ /// assert_eq!(v, ["leopard", "tiger", "lionX"]);
/// ```
///
/// More complex patterns with a lambda:
///
/// ```
/// let v: Vec<&str> = "abc1def2ghi".rsplitn(1, |c: char| c.is_numeric()).collect();
- /// assert_eq!(v, vec!["ghi", "abc1def"]);
+ /// assert_eq!(v, ["ghi", "abc1def"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn rsplitn<'a, P: Pattern<'a>>(&'a self, count: usize, pat: P) -> RSplitN<'a, P> {
///
/// ```
/// let v: Vec<(usize, usize)> = "abcXXXabcYYYabc".match_indices("abc").collect();
- /// assert_eq!(v, vec![(0,3), (6,9), (12,15)]);
+ /// assert_eq!(v, [(0,3), (6,9), (12,15)]);
///
/// let v: Vec<(usize, usize)> = "1abcabc2".match_indices("abc").collect();
- /// assert_eq!(v, vec![(1,4), (4,7)]);
+ /// assert_eq!(v, [(1,4), (4,7)]);
///
/// let v: Vec<(usize, usize)> = "ababa".match_indices("aba").collect();
- /// assert_eq!(v, vec![(0, 3)]); // only the first `aba`
+ /// assert_eq!(v, [(0, 3)]); // only the first `aba`
/// ```
#[unstable(feature = "collections",
reason = "might have its iterator type changed")]
///
/// ```
/// let v: Vec<&str> = "abcXXXabcYYYabc".split_str("abc").collect();
- /// assert_eq!(v, vec!["", "XXX", "YYY", ""]);
+ /// assert_eq!(v, ["", "XXX", "YYY", ""]);
///
/// let v: Vec<&str> = "1abcabc2".split_str("abc").collect();
- /// assert_eq!(v, vec!["1", "", "2"]);
+ /// assert_eq!(v, ["1", "", "2"]);
/// ```
#[unstable(feature = "collections")]
#[deprecated(since = "1.0.0", reason = "use `split()` with a `&str`")]
/// let four_lines = "foo\nbar\n\nbaz";
/// let v: Vec<&str> = four_lines.lines().collect();
///
- /// assert_eq!(v, vec!["foo", "bar", "", "baz"]);
+ /// assert_eq!(v, ["foo", "bar", "", "baz"]);
/// ```
///
/// Leaving off the trailing character:
/// let four_lines = "foo\nbar\n\nbaz\n";
/// let v: Vec<&str> = four_lines.lines().collect();
///
- /// assert_eq!(v, vec!["foo", "bar", "", "baz"]);
+ /// assert_eq!(v, ["foo", "bar", "", "baz"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn lines(&self) -> Lines {
/// let four_lines = "foo\r\nbar\n\r\nbaz";
/// let v: Vec<&str> = four_lines.lines_any().collect();
///
- /// assert_eq!(v, vec!["foo", "bar", "", "baz"]);
+ /// assert_eq!(v, ["foo", "bar", "", "baz"]);
/// ```
///
/// Leaving off the trailing character:
/// let four_lines = "foo\r\nbar\n\r\nbaz\n";
/// let v: Vec<&str> = four_lines.lines_any().collect();
///
- /// assert_eq!(v, vec!["foo", "bar", "", "baz"]);
+ /// assert_eq!(v, ["foo", "bar", "", "baz"]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
fn lines_any(&self) -> LinesAny {
/// let some_words = " Mary had\ta little \n\t lamb";
/// let v: Vec<&str> = some_words.words().collect();
///
- /// assert_eq!(v, vec!["Mary", "had", "a", "little", "lamb"]);
+ /// assert_eq!(v, ["Mary", "had", "a", "little", "lamb"]);
/// ```
#[unstable(feature = "str_words",
reason = "the precise algorithm to use is unclear")]
let data = "\nMäry häd ä little lämb\nLittle lämb\n";
let split: Vec<&str> = data.splitn(3, ' ').collect();
- assert_eq!(split, vec!["\nMäry", "häd", "ä", "little lämb\nLittle lämb\n"]);
+ assert_eq!(split, ["\nMäry", "häd", "ä", "little lämb\nLittle lämb\n"]);
let split: Vec<&str> = data.splitn(3, |c: char| c == ' ').collect();
- assert_eq!(split, vec!["\nMäry", "häd", "ä", "little lämb\nLittle lämb\n"]);
+ assert_eq!(split, ["\nMäry", "häd", "ä", "little lämb\nLittle lämb\n"]);
// Unicode
let split: Vec<&str> = data.splitn(3, 'ä').collect();
- assert_eq!(split, vec!["\nM", "ry h", "d ", " little lämb\nLittle lämb\n"]);
+ assert_eq!(split, ["\nM", "ry h", "d ", " little lämb\nLittle lämb\n"]);
let split: Vec<&str> = data.splitn(3, |c: char| c == 'ä').collect();
- assert_eq!(split, vec!["\nM", "ry h", "d ", " little lämb\nLittle lämb\n"]);
+ assert_eq!(split, ["\nM", "ry h", "d ", " little lämb\nLittle lämb\n"]);
}
#[test]
let data = "\nMäry häd ä little lämb\nLittle lämb\n";
let split: Vec<&str> = data.split('\n').collect();
- assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb", ""]);
+ assert_eq!(split, ["", "Märy häd ä little lämb", "Little lämb", ""]);
let split: Vec<&str> = data.split_terminator('\n').collect();
- assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb"]);
+ assert_eq!(split, ["", "Märy häd ä little lämb", "Little lämb"]);
}
#[test]
fn test_words() {
let data = "\n \tMäry häd\tä little lämb\nLittle lämb\n";
let words: Vec<&str> = data.words().collect();
- assert_eq!(words, vec!["Märy", "häd", "ä", "little", "lämb", "Little", "lämb"])
+ assert_eq!(words, ["Märy", "häd", "ä", "little", "lämb", "Little", "lämb"])
}
#[test]
fn test_lines() {
let data = "\nMäry häd ä little lämb\n\nLittle lämb\n";
let lines: Vec<&str> = data.lines().collect();
- assert_eq!(lines, vec!["", "Märy häd ä little lämb", "", "Little lämb"]);
+ assert_eq!(lines, ["", "Märy häd ä little lämb", "", "Little lämb"]);
let data = "\nMäry häd ä little lämb\n\nLittle lämb"; // no trailing \n
let lines: Vec<&str> = data.lines().collect();
- assert_eq!(lines, vec!["", "Märy häd ä little lämb", "", "Little lämb"]);
+ assert_eq!(lines, ["", "Märy häd ä little lämb", "", "Little lämb"]);
}
#[test]
/// let invalid_vec = vec![240, 144, 128];
/// let s = String::from_utf8(invalid_vec).err().unwrap();
/// assert_eq!(s.utf8_error(), Utf8Error::TooShort);
- /// assert_eq!(s.into_bytes(), vec![240, 144, 128]);
+ /// assert_eq!(s.into_bytes(), [240, 144, 128]);
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
/// ```
/// let s = String::from_str("hello");
/// let bytes = s.into_bytes();
- /// assert_eq!(bytes, vec![104, 101, 108, 108, 111]);
+ /// assert_eq!(bytes, [104, 101, 108, 108, 111]);
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
let CharRange { ch, next } = self.char_range_at(idx);
unsafe {
- ptr::copy_memory(self.vec.as_mut_ptr().offset(idx as isize),
- self.vec.as_ptr().offset(next as isize),
- len - next);
+ ptr::copy(self.vec.as_mut_ptr().offset(idx as isize),
+ self.vec.as_ptr().offset(next as isize),
+ len - next);
self.vec.set_len(len - (next - idx));
}
ch
let amt = ch.encode_utf8(&mut bits).unwrap();
unsafe {
- ptr::copy_memory(self.vec.as_mut_ptr().offset((idx + amt) as isize),
- self.vec.as_ptr().offset(idx as isize),
- len - idx);
- ptr::copy_memory(self.vec.as_mut_ptr().offset(idx as isize),
- bits.as_ptr(),
- amt);
+ ptr::copy(self.vec.as_mut_ptr().offset((idx + amt) as isize),
+ self.vec.as_ptr().offset(idx as isize),
+ len - idx);
+ ptr::copy(self.vec.as_mut_ptr().offset(idx as isize),
+ bits.as_ptr(),
+ amt);
self.vec.set_len(len + amt);
}
}
/// let mut s = String::from_str("hello");
/// unsafe {
/// let vec = s.as_mut_vec();
- /// assert!(vec == &mut vec![104, 101, 108, 108, 111]);
+ /// assert!(vec == &[104, 101, 108, 108, 111]);
/// vec.reverse();
/// }
/// assert_eq!(s.as_slice(), "olleh");
/// for x in vec.iter() {
/// println!("{}", x);
/// }
-/// assert_eq!(vec, vec![7, 1, 2, 3]);
+/// assert_eq!(vec, [7, 1, 2, 3]);
/// ```
///
/// The `vec!` macro is provided to make initialization more convenient:
/// ```
/// let mut vec = vec![1, 2, 3];
/// vec.push(4);
-/// assert_eq!(vec, vec![1, 2, 3, 4]);
+/// assert_eq!(vec, [1, 2, 3, 4]);
/// ```
///
/// Use a `Vec<T>` as an efficient stack:
///
/// // Put everything back together into a Vec
/// let rebuilt = Vec::from_raw_parts(p, len, cap);
- /// assert_eq!(rebuilt, vec![4, 5, 6]);
+ /// assert_eq!(rebuilt, [4, 5, 6]);
/// }
/// }
/// ```
pub unsafe fn from_raw_buf(ptr: *const T, elts: usize) -> Vec<T> {
let mut dst = Vec::with_capacity(elts);
dst.set_len(elts);
- ptr::copy_nonoverlapping_memory(dst.as_mut_ptr(), ptr, elts);
+ ptr::copy_nonoverlapping(dst.as_mut_ptr(), ptr, elts);
dst
}
/// ```
/// let mut vec = vec![1, 2, 3, 4];
/// vec.truncate(2);
- /// assert_eq!(vec, vec![1, 2]);
+ /// assert_eq!(vec, [1, 2]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn truncate(&mut self, len: usize) {
#[stable(feature = "rust1", since = "1.0.0")]
pub fn as_mut_slice(&mut self) -> &mut [T] {
unsafe {
+ let ptr = *self.ptr;
+ assume(!ptr.is_null());
mem::transmute(RawSlice {
- data: *self.ptr,
+ data: ptr,
len: self.len,
})
}
pub fn into_iter(self) -> IntoIter<T> {
unsafe {
let ptr = *self.ptr;
+ assume(!ptr.is_null());
let cap = self.cap;
let begin = ptr as *const T;
let end = if mem::size_of::<T>() == 0 {
/// let mut v = vec!["foo", "bar", "baz", "qux"];
///
/// assert_eq!(v.swap_remove(1), "bar");
- /// assert_eq!(v, vec!["foo", "qux", "baz"]);
+ /// assert_eq!(v, ["foo", "qux", "baz"]);
///
/// assert_eq!(v.swap_remove(0), "foo");
- /// assert_eq!(v, vec!["baz", "qux"]);
+ /// assert_eq!(v, ["baz", "qux"]);
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
/// ```
/// let mut vec = vec![1, 2, 3];
/// vec.insert(1, 4);
- /// assert_eq!(vec, vec![1, 4, 2, 3]);
+ /// assert_eq!(vec, [1, 4, 2, 3]);
/// vec.insert(4, 5);
- /// assert_eq!(vec, vec![1, 4, 2, 3, 5]);
+ /// assert_eq!(vec, [1, 4, 2, 3, 5]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn insert(&mut self, index: usize, element: T) {
let p = self.as_mut_ptr().offset(index as isize);
// Shift everything over to make space. (Duplicating the
// `index`th element into two consecutive places.)
- ptr::copy_memory(p.offset(1), &*p, len - index);
+ ptr::copy(p.offset(1), &*p, len - index);
// Write it in, overwriting the first copy of the `index`th
// element.
ptr::write(&mut *p, element);
/// ```
/// let mut v = vec![1, 2, 3];
/// assert_eq!(v.remove(1), 2);
- /// assert_eq!(v, vec![1, 3]);
+ /// assert_eq!(v, [1, 3]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn remove(&mut self, index: usize) -> T {
ret = ptr::read(ptr);
// Shift everything down to fill in that spot.
- ptr::copy_memory(ptr, &*ptr.offset(1), len - index - 1);
+ ptr::copy(ptr, &*ptr.offset(1), len - index - 1);
}
self.set_len(len - 1);
ret
/// ```
/// let mut vec = vec![1, 2, 3, 4];
/// vec.retain(|&x| x%2 == 0);
- /// assert_eq!(vec, vec![2, 4]);
+ /// assert_eq!(vec, [2, 4]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn retain<F>(&mut self, mut f: F) where F: FnMut(&T) -> bool {
/// ```rust
/// let mut vec = vec!(1, 2);
/// vec.push(3);
- /// assert_eq!(vec, vec!(1, 2, 3));
+ /// assert_eq!(vec, [1, 2, 3]);
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
/// ```rust
/// let mut vec = vec![1, 2, 3];
/// assert_eq!(vec.pop(), Some(3));
- /// assert_eq!(vec, vec![1, 2]);
+ /// assert_eq!(vec, [1, 2]);
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
/// let mut vec = vec![1, 2, 3];
/// let mut vec2 = vec![4, 5, 6];
/// vec.append(&mut vec2);
- /// assert_eq!(vec, vec![1, 2, 3, 4, 5, 6]);
- /// assert_eq!(vec2, vec![]);
+ /// assert_eq!(vec, [1, 2, 3, 4, 5, 6]);
+ /// assert_eq!(vec2, []);
/// ```
#[inline]
#[unstable(feature = "collections",
self.reserve(other.len());
let len = self.len();
unsafe {
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
self.get_unchecked_mut(len),
other.as_ptr(),
other.len());
/// ```
/// let mut vec = vec![1,2,3];
/// let vec2 = vec.split_off(1);
- /// assert_eq!(vec, vec![1]);
- /// assert_eq!(vec2, vec![2, 3]);
+ /// assert_eq!(vec, [1]);
+ /// assert_eq!(vec2, [2, 3]);
/// ```
#[inline]
#[unstable(feature = "collections",
self.set_len(at);
other.set_len(other_len);
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
other.as_mut_ptr(),
self.as_ptr().offset(at as isize),
other.len());
/// ```
/// let mut vec = vec!["hello"];
/// vec.resize(3, "world");
- /// assert_eq!(vec, vec!["hello", "world", "world"]);
+ /// assert_eq!(vec, ["hello", "world", "world"]);
///
/// let mut vec = vec![1, 2, 3, 4];
/// vec.resize(2, 0);
- /// assert_eq!(vec, vec![1, 2]);
+ /// assert_eq!(vec, [1, 2]);
/// ```
#[unstable(feature = "collections",
reason = "matches collection reform specification; waiting for dust to settle")]
/// ```
/// let mut vec = vec![1];
/// vec.push_all(&[2, 3, 4]);
- /// assert_eq!(vec, vec![1, 2, 3, 4]);
+ /// assert_eq!(vec, [1, 2, 3, 4]);
/// ```
#[inline]
#[unstable(feature = "collections",
///
/// vec.dedup();
///
- /// assert_eq!(vec, vec![1, 2, 3, 2]);
+ /// assert_eq!(vec, [1, 2, 3, 2]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn dedup(&mut self) {
marker: PhantomData<&'a T>,
}
+unsafe impl<'a, T: Sync> Sync for Drain<'a, T> {}
+unsafe impl<'a, T: Send> Send for Drain<'a, T> {}
+
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> Iterator for Drain<'a, T> {
type Item = T;
let (left, right) = values.split_at_mut(2);
{
let left: &[_] = left;
- assert!(&left[..left.len()] == &[1, 2][]);
+ assert!(&left[..left.len()] == &[1, 2]);
}
for p in left {
*p += 1;
{
let right: &[_] = right;
- assert!(&right[..right.len()] == &[3, 4, 5][]);
+ assert!(&right[..right.len()] == &[3, 4, 5]);
}
for p in right {
*p += 2;
}
}
- assert!(values == vec![2, 3, 5, 6, 7]);
+ assert_eq!(values, [2, 3, 5, 6, 7]);
}
#[test]
fn test_retain() {
let mut vec = vec![1, 2, 3, 4];
vec.retain(|&x| x % 2 == 0);
- assert!(vec == vec![2, 4]);
+ assert_eq!(vec, [2, 4]);
}
#[test]
let a = [1, 2, 3];
let ptr = a.as_ptr();
let b = Vec::from_raw_buf(ptr, 3);
- assert_eq!(b, vec![1, 2, 3]);
+ assert_eq!(b, [1, 2, 3]);
// Test on-heap copy-from-buf.
let c = vec![1, 2, 3, 4, 5];
let ptr = c.as_ptr();
let d = Vec::from_raw_buf(ptr, 5);
- assert_eq!(d, vec![1, 2, 3, 4, 5]);
+ assert_eq!(d, [1, 2, 3, 4, 5]);
}
}
for i in vec {
vec2.push(i);
}
- assert!(vec2 == vec![1, 2, 3]);
+ assert_eq!(vec2, [1, 2, 3]);
}
#[test]
for i in vec.into_iter().rev() {
vec2.push(i);
}
- assert!(vec2 == vec![3, 2, 1]);
+ assert_eq!(vec2, [3, 2, 1]);
}
#[test]
for i in vec {
vec2.push(i);
}
- assert!(vec2 == vec![(), (), ()]);
+ assert_eq!(vec2, [(), (), ()]);
}
#[test]
let mut vec = vec![1, 2, 3];
let mut vec2 = vec![4, 5, 6];
vec.append(&mut vec2);
- assert_eq!(vec, vec![1, 2, 3, 4, 5, 6]);
- assert_eq!(vec2, vec![]);
+ assert_eq!(vec, [1, 2, 3, 4, 5, 6]);
+ assert_eq!(vec2, []);
}
#[test]
fn test_split_off() {
let mut vec = vec![1, 2, 3, 4, 5, 6];
let vec2 = vec.split_off(4);
- assert_eq!(vec, vec![1, 2, 3, 4]);
- assert_eq!(vec2, vec![5, 6]);
+ assert_eq!(vec, [1, 2, 3, 4]);
+ assert_eq!(vec2, [5, 6]);
}
#[bench]
use core::default::Default;
use core::fmt;
use core::iter::{self, repeat, FromIterator, IntoIterator, RandomAccessIterator};
-use core::marker;
use core::mem;
use core::num::{Int, UnsignedInt};
use core::ops::{Index, IndexMut};
ptr: Unique<T>,
}
-#[stable(feature = "rust1", since = "1.0.0")]
-unsafe impl<T: Send> Send for VecDeque<T> {}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-unsafe impl<T: Sync> Sync for VecDeque<T> {}
-
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: Clone> Clone for VecDeque<T> {
fn clone(&self) -> VecDeque<T> {
self.cap);
debug_assert!(src + len <= self.cap, "dst={} src={} len={} cap={}", dst, src, len,
self.cap);
- ptr::copy_memory(
+ ptr::copy(
self.ptr.offset(dst as isize),
self.ptr.offset(src as isize),
len);
self.cap);
debug_assert!(src + len <= self.cap, "dst={} src={} len={} cap={}", dst, src, len,
self.cap);
- ptr::copy_nonoverlapping_memory(
+ ptr::copy_nonoverlapping(
self.ptr.offset(dst as isize),
self.ptr.offset(src as isize),
len);
IterMut {
tail: self.tail,
head: self.head,
- cap: self.cap,
- ptr: *self.ptr,
- marker: marker::PhantomData,
+ ring: unsafe { self.buffer_as_mut_slice() },
}
}
// `at` lies in the first half.
let amount_in_first = first_len - at;
- ptr::copy_nonoverlapping_memory(*other.ptr,
- first_half.as_ptr().offset(at as isize),
- amount_in_first);
+ ptr::copy_nonoverlapping(*other.ptr,
+ first_half.as_ptr().offset(at as isize),
+ amount_in_first);
// just take all of the second half.
- ptr::copy_nonoverlapping_memory(other.ptr.offset(amount_in_first as isize),
- second_half.as_ptr(),
- second_len);
+ ptr::copy_nonoverlapping(other.ptr.offset(amount_in_first as isize),
+ second_half.as_ptr(),
+ second_len);
} else {
// `at` lies in the second half, need to factor in the elements we skipped
// in the first half.
let offset = at - first_len;
let amount_in_second = second_len - offset;
- ptr::copy_nonoverlapping_memory(*other.ptr,
- second_half.as_ptr().offset(offset as isize),
- amount_in_second);
+ ptr::copy_nonoverlapping(*other.ptr,
+ second_half.as_ptr().offset(offset as isize),
+ amount_in_second);
}
}
}
}
-// FIXME This was implemented differently from Iter because of a problem
-// with returning the mutable reference. I couldn't find a way to
-// make the lifetime checker happy so, but there should be a way.
/// `VecDeque` mutable iterator.
#[stable(feature = "rust1", since = "1.0.0")]
pub struct IterMut<'a, T:'a> {
- ptr: *mut T,
+ ring: &'a mut [T],
tail: usize,
head: usize,
- cap: usize,
- marker: marker::PhantomData<&'a mut T>,
}
#[stable(feature = "rust1", since = "1.0.0")]
return None;
}
let tail = self.tail;
- self.tail = wrap_index(self.tail + 1, self.cap);
+ self.tail = wrap_index(self.tail + 1, self.ring.len());
unsafe {
- Some(&mut *self.ptr.offset(tail as isize))
+ let elem = self.ring.get_unchecked_mut(tail);
+ Some(&mut *(elem as *mut _))
}
}
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
- let len = count(self.tail, self.head, self.cap);
+ let len = count(self.tail, self.head, self.ring.len());
(len, Some(len))
}
}
if self.tail == self.head {
return None;
}
- self.head = wrap_index(self.head - 1, self.cap);
+ self.head = wrap_index(self.head - 1, self.ring.len());
unsafe {
- Some(&mut *self.ptr.offset(self.head as isize))
+ let elem = self.ring.get_unchecked_mut(self.head);
+ Some(&mut *(elem as *mut _))
}
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: fmt::Debug> fmt::Debug for VecDeque<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "VecDeque ["));
+ try!(write!(f, "["));
for (i, e) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
let mut d: VecDeque<_> = (0..5).collect();
d.pop_front();
d.swap(0, 3);
- assert_eq!(d.iter().cloned().collect::<Vec<_>>(), vec!(4, 2, 3, 1));
+ assert_eq!(d.iter().cloned().collect::<Vec<_>>(), [4, 2, 3, 1]);
}
#[test]
#[test]
fn test_show() {
let ringbuf: VecDeque<_> = (0..10).collect();
- assert_eq!(format!("{:?}", ringbuf), "VecDeque [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
+ assert_eq!(format!("{:?}", ringbuf), "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]");
let ringbuf: VecDeque<_> = vec!["just", "one", "test", "more"].iter()
.cloned()
.collect();
- assert_eq!(format!("{:?}", ringbuf), "VecDeque [\"just\", \"one\", \"test\", \"more\"]");
+ assert_eq!(format!("{:?}", ringbuf), "[\"just\", \"one\", \"test\", \"more\"]");
}
#[test]
// normal append
a.append(&mut b);
- assert_eq!(a.iter().cloned().collect(), vec![1, 2, 3, 4, 5, 6]);
- assert_eq!(b.iter().cloned().collect(), vec![]);
+ assert_eq!(a.iter().cloned().collect::<Vec<_>>(), [1, 2, 3, 4, 5, 6]);
+ assert_eq!(b.iter().cloned().collect::<Vec<_>>(), []);
// append nothing to something
a.append(&mut b);
- assert_eq!(a.iter().cloned().collect(), vec![1, 2, 3, 4, 5, 6]);
- assert_eq!(b.iter().cloned().collect(), vec![]);
+ assert_eq!(a.iter().cloned().collect::<Vec<_>>(), [1, 2, 3, 4, 5, 6]);
+ assert_eq!(b.iter().cloned().collect::<Vec<_>>(), []);
// append something to nothing
b.append(&mut a);
- assert_eq!(b.iter().cloned().collect(), vec![1, 2, 3, 4, 5, 6]);
- assert_eq!(a.iter().cloned().collect(), vec![]);
+ assert_eq!(b.iter().cloned().collect::<Vec<_>>(), [1, 2, 3, 4, 5, 6]);
+ assert_eq!(a.iter().cloned().collect::<Vec<_>>(), []);
}
}
///
/// let vec: Vec<(usize, &str)> = map.into_iter().collect();
///
- /// assert_eq!(vec, vec![(1, "a"), (2, "b"), (3, "c")]);
+ /// assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn into_iter(self) -> IntoIter<V> {
///
/// let vec: Vec<(usize, &str)> = map.drain().collect();
///
- /// assert_eq!(vec, vec![(1, "a"), (2, "b"), (3, "c")]);
+ /// assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]);
/// ```
#[unstable(feature = "collections",
reason = "matches collection reform specification, waiting for dust to settle")]
#[stable(feature = "rust1", since = "1.0.0")]
impl<V: fmt::Debug> fmt::Debug for VecMap<V> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "VecMap {{"));
+ try!(write!(f, "{{"));
for (i, (k, v)) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
let vec: Vec<_> = map.drain().collect();
- assert_eq!(vec, vec![(1, "a"), (2, "b"), (3, "c")]);
+ assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]);
assert_eq!(map.len(), 0);
}
map.insert(3, 4);
let map_str = format!("{:?}", map);
- assert!(map_str == "VecMap {1: 2, 3: 4}" || map_str == "{3: 4, 1: 2}");
- assert_eq!(format!("{:?}", empty), "VecMap {}");
+ assert!(map_str == "{1: 2, 3: 4}" || map_str == "{3: 4, 1: 2}");
+ assert_eq!(format!("{:?}", empty), "{}");
}
#[test]
/// traits.
#[stable(feature = "rust1", since = "1.0.0")]
pub struct Formatter<'a> {
- #[cfg(not(stage0))]
flags: u32,
- #[cfg(stage0)]
- flags: usize,
fill: char,
align: rt::v1::Alignment,
width: Option<usize>,
}
}
- #[cfg(stage0)]
- #[doc(hidden)]
- #[stable(feature = "rust1", since = "1.0.0")]
- pub fn from_uint(x: &uint) -> ArgumentV1 {
- ArgumentV1::new(x, ArgumentV1::show_usize)
- }
- #[cfg(not(stage0))]
#[doc(hidden)]
#[stable(feature = "rust1", since = "1.0.0")]
pub fn from_usize(x: &usize) -> ArgumentV1 {
write(self.buf, fmt)
}
- #[cfg(not(stage0))]
/// Flags for formatting (packed version of rt::Flag)
#[stable(feature = "rust1", since = "1.0.0")]
pub fn flags(&self) -> u32 { self.flags }
- #[cfg(stage0)]
- /// Flags for formatting (packed version of rt::Flag)
- #[stable(feature = "rust1", since = "1.0.0")]
- pub fn flags(&self) -> usize { self.flags }
/// Character used as 'fill' whenever there is alignment
#[unstable(feature = "core", reason = "method was just created")]
pub fill: char,
#[stable(feature = "rust1", since = "1.0.0")]
pub align: Alignment,
- #[cfg(stage0)]
- #[stable(feature = "rust1", since = "1.0.0")]
- pub flags: usize,
- #[cfg(not(stage0))]
#[stable(feature = "rust1", since = "1.0.0")]
pub flags: u32,
#[stable(feature = "rust1", since = "1.0.0")]
/// will trigger a compiler error.
pub fn return_address() -> *const u8;
- /// Returns `true` if a type requires drop glue.
+ /// Returns `true` if the actual type given as `T` requires drop
+ /// glue; returns `false` if the actual type provided for `T`
+ /// implements `Copy`.
+ ///
+ /// If the actual type neither requires drop glue nor implements
+ /// `Copy`, then may return `true` or `false`.
pub fn needs_drop<T>() -> bool;
/// Returns `true` if a type is managed (will be allocated on the local heap)
/// }
/// }
/// ```
- #[unstable(feature = "core")]
+ #[stable(feature = "rust1", since = "1.0.0")]
pub fn copy_nonoverlapping_memory<T>(dst: *mut T, src: *const T, count: usize);
/// Copies `count * size_of<T>` bytes from `src` to `dst`. The source
/// }
/// ```
///
- #[unstable(feature = "core")]
+ #[stable(feature = "rust1", since = "1.0.0")]
pub fn copy_memory<T>(dst: *mut T, src: *const T, count: usize);
/// Invokes memset on the specified pointer, setting `count * size_of::<T>()`
/// bytes of memory starting at `dst` to `c`.
- #[unstable(feature = "core",
- reason = "uncertain about naming and semantics")]
+ #[stable(feature = "rust1", since = "1.0.0")]
pub fn set_memory<T>(dst: *mut T, val: u8, count: usize);
/// Equivalent to the appropriate `llvm.memcpy.p0i8.0i8.*` intrinsic, with
use ops::{Add, Deref, FnMut};
use option::Option;
use option::Option::{Some, None};
-use marker::Sized;
+use marker::{Send, Sized, Sync};
use usize;
/// An interface for dealing with "external iterators". These types of iterators
self.fold(0, |cnt, _x| cnt + 1)
}
- /// Loops through the entire iterator, returning the last element of the
- /// iterator.
+ /// Loops through the entire iterator, returning the last element.
///
/// # Examples
///
/// ```
/// let vec = vec![1, 2, 3, 4];
/// let (even, odd): (Vec<_>, Vec<_>) = vec.into_iter().partition(|&n| n % 2 == 0);
- /// assert_eq!(even, vec![2, 4]);
- /// assert_eq!(odd, vec![1, 3]);
+ /// assert_eq!(even, [2, 4]);
+ /// assert_eq!(odd, [1, 3]);
/// ```
#[unstable(feature = "core",
reason = "recently added as part of collections reform")]
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
- fn all<F>(self, mut f: F) -> bool where F: FnMut(Self::Item) -> bool {
- for x in self { if !f(x) { return false; } }
+ fn all<F>(&mut self, mut f: F) -> bool where F: FnMut(Self::Item) -> bool {
+ for x in self.by_ref() { if !f(x) { return false; } }
true
}
#[unstable(feature = "core", reason = "recent addition")]
fn cloned(self) -> Cloned<Self> where
Self::Item: Deref,
- <Self::Item as Deref>::Output: Clone,
+ <Self::Item as Deref>::Target: Clone,
{
Cloned { it: self }
}
for x in self.iter.by_ref() {
if (self.predicate)(&x) {
return Some(x);
- } else {
- continue
}
}
None
peeked: Option<I::Item>,
}
+// FIXME: after #22828 being fixed, the following unsafe impl should be removed
+unsafe impl<I: Iterator> Sync for Peekable<I> where I: Sync, I::Item: Sync {}
+unsafe impl<I: Iterator> Send for Peekable<I> where I: Send, I::Item: Send {}
+
impl<I: Iterator + Clone> Clone for Peekable<I> where I::Item: Clone {
fn clone(&self) -> Peekable<I> {
Peekable {
panic!("explicit panic")
);
($msg:expr) => ({
- #[cfg(stage0)]
- static _MSG_FILE_LINE: (&'static str, &'static str, usize) = ($msg, file!(), line!());
- #[cfg(not(stage0))]
static _MSG_FILE_LINE: (&'static str, &'static str, u32) = ($msg, file!(), line!());
::core::panicking::panic(&_MSG_FILE_LINE)
});
// used inside a dead function. Just `#[allow(dead_code)]` is
// insufficient, since the user may have
// `#[forbid(dead_code)]` and which cannot be overridden.
- #[cfg(stage0)]
- static _FILE_LINE: (&'static str, usize) = (file!(), line!());
- #[cfg(not(stage0))]
static _FILE_LINE: (&'static str, u32) = (file!(), line!());
::core::panicking::panic_fmt(format_args!($fmt, $($arg)*), &_FILE_LINE)
});
/// any methods, but instead is used to gate access to data.
///
/// FIXME. Better documentation needed here!
-pub trait MarkerTrait : PhantomFn<Self> { }
+pub trait MarkerTrait : PhantomFn<Self,Self> { }
+// ~~~~~ <-- FIXME(#22806)?
+//
+// Marker trait has been made invariant so as to avoid inf recursion,
+// but we should ideally solve the underlying problem. That's a bit
+// complicated.
+
impl<T:?Sized> MarkerTrait for T { }
/// `PhantomFn` is a marker trait for use with traits that contain
let mut t: T = uninitialized();
// Perform the swap, `&mut` pointers never alias
- ptr::copy_nonoverlapping_memory(&mut t, &*x, 1);
- ptr::copy_nonoverlapping_memory(x, &*y, 1);
- ptr::copy_nonoverlapping_memory(y, &t, 1);
+ ptr::copy_nonoverlapping(&mut t, &*x, 1);
+ ptr::copy_nonoverlapping(x, &*y, 1);
+ ptr::copy_nonoverlapping(y, &t, 1);
// y and t now point to the same thing, but we need to completely forget `t`
// because it's no longer relevant.
let is_signed_ty = (0 as $T) > Int::min_value();
match src.slice_shift_char() {
+ Some(('-', "")) => Err(PIE { kind: Empty }),
Some(('-', src)) if is_signed_ty => {
// The number is negative
let mut result = 0;
/// ```
/// let x = Some("string");
/// let v: Vec<&str> = x.into_iter().collect();
- /// assert_eq!(v, vec!["string"]);
+ /// assert_eq!(v, ["string"]);
///
/// let x = None;
/// let v: Vec<&str> = x.into_iter().collect();
#[cold] #[inline(never)] // this is the slow path, always
#[lang="panic"]
-#[cfg(stage0)]
-pub fn panic(expr_file_line: &(&'static str, &'static str, usize)) -> ! {
- let (expr, file, line) = *expr_file_line;
- panic_fmt(format_args!("{}", expr), &(file, line))
-}
-#[cold] #[inline(never)] // this is the slow path, always
-#[lang="panic"]
-#[cfg(not(stage0))]
pub fn panic(expr_file_line: &(&'static str, &'static str, u32)) -> ! {
let (expr, file, line) = *expr_file_line;
panic_fmt(format_args!("{}", expr), &(file, line))
#[cold] #[inline(never)]
#[lang="panic_bounds_check"]
-#[cfg(stage0)]
-fn panic_bounds_check(file_line: &(&'static str, usize),
- index: usize, len: usize) -> ! {
- panic_fmt(format_args!("index out of bounds: the len is {} but the index is {}",
- len, index), file_line)
-}
-#[cold] #[inline(never)]
-#[lang="panic_bounds_check"]
-#[cfg(not(stage0))]
fn panic_bounds_check(file_line: &(&'static str, u32),
index: usize, len: usize) -> ! {
panic_fmt(format_args!("index out of bounds: the len is {} but the index is {}",
}
#[cold] #[inline(never)]
-#[cfg(stage0)]
-pub fn panic_fmt(fmt: fmt::Arguments, file_line: &(&'static str, usize)) -> ! {
- #[allow(improper_ctypes)]
- extern {
- #[lang = "panic_fmt"]
- fn panic_impl(fmt: fmt::Arguments, file: &'static str, line: uint) -> !;
- }
- let (file, line) = *file_line;
- unsafe { panic_impl(fmt, file, line as uint) }
-}
-#[cold] #[inline(never)]
-#[cfg(not(stage0))]
pub fn panic_fmt(fmt: fmt::Arguments, file_line: &(&'static str, u32)) -> ! {
#[allow(improper_ctypes)]
extern {
// FIXME #19649: intrinsic docs don't render, so these have no docs :(
-#[unstable(feature = "core")]
-pub use intrinsics::copy_nonoverlapping_memory;
+#[stable(feature = "rust1", since = "1.0.0")]
+pub use intrinsics::copy_nonoverlapping_memory as copy_nonoverlapping;
-#[unstable(feature = "core")]
-pub use intrinsics::copy_memory;
+#[stable(feature = "rust1", since = "1.0.0")]
+pub use intrinsics::copy_memory as copy;
-#[unstable(feature = "core",
- reason = "uncertain about naming and semantics")]
-pub use intrinsics::set_memory;
+#[stable(feature = "rust1", since = "1.0.0")]
+pub use intrinsics::set_memory as write_bytes;
+extern "rust-intrinsic" {
+ #[unstable(feature = "core")]
+ #[deprecated(since = "1.0.0", reason = "renamed to `copy_nonoverlapping`")]
+ pub fn copy_nonoverlapping_memory<T>(dst: *mut T, src: *const T, count: usize);
+ #[unstable(feature = "core")]
+ #[deprecated(since = "1.0.0", reason = "renamed to `copy`")]
+ pub fn copy_memory<T>(dst: *mut T, src: *const T, count: usize);
+
+ #[unstable(feature = "core",
+ reason = "uncertain about naming and semantics")]
+ #[deprecated(since = "1.0.0", reason = "renamed to `write_bytes`")]
+ pub fn set_memory<T>(dst: *mut T, val: u8, count: usize);
+}
/// Creates a null raw pointer.
///
#[inline]
#[unstable(feature = "core",
reason = "may play a larger role in std::ptr future extensions")]
+#[deprecated(since = "1.0.0", reason = "use `write_bytes` instead")]
pub unsafe fn zero_memory<T>(dst: *mut T, count: usize) {
- set_memory(dst, 0, count);
+ write_bytes(dst, 0, count);
}
/// Swaps the values at two mutable locations of the same type, without
let t: *mut T = &mut tmp;
// Perform the swap
- copy_nonoverlapping_memory(t, &*x, 1);
- copy_memory(x, &*y, 1); // `x` and `y` may overlap
- copy_nonoverlapping_memory(y, &*t, 1);
+ copy_nonoverlapping(t, &*x, 1);
+ copy(x, &*y, 1); // `x` and `y` may overlap
+ copy_nonoverlapping(y, &*t, 1);
// y and t now point to the same thing, but we need to completely forget `tmp`
// because it's no longer relevant.
#[stable(feature = "rust1", since = "1.0.0")]
pub unsafe fn read<T>(src: *const T) -> T {
let mut tmp: T = mem::uninitialized();
- copy_nonoverlapping_memory(&mut tmp, src, 1);
+ copy_nonoverlapping(&mut tmp, src, 1);
tmp
}
let tmp = read(&*dest);
// Now zero out `dest`:
- zero_memory(dest, 1);
+ write_bytes(dest, 0, 1);
tmp
}
/// Methods on raw pointers
#[stable(feature = "rust1", since = "1.0.0")]
-pub trait PtrExt: Sized {
+pub trait PtrExt {
/// The type which is being pointed at
- type Target;
+ type Target: ?Sized;
/// Returns true if the pointer is null.
#[stable(feature = "rust1", since = "1.0.0")]
/// Otherwise `offset` invokes Undefined Behaviour, regardless of whether
/// the pointer is used.
#[stable(feature = "rust1", since = "1.0.0")]
- unsafe fn offset(self, count: isize) -> Self;
+ unsafe fn offset(self, count: isize) -> Self where Self::Target: Sized;
}
/// Methods on mutable raw pointers
#[stable(feature = "rust1", since = "1.0.0")]
pub trait MutPtrExt {
/// The type which is being pointed at
- type Target;
+ type Target: ?Sized;
/// Returns `None` if the pointer is null, or else returns a mutable
/// reference to the value wrapped in `Some`.
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> PtrExt for *const T {
+impl<T: ?Sized> PtrExt for *const T {
type Target = T;
#[inline]
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
- unsafe fn offset(self, count: isize) -> *const T {
+ unsafe fn offset(self, count: isize) -> *const T where T: Sized {
intrinsics::offset(self, count)
}
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> PtrExt for *mut T {
+impl<T: ?Sized> PtrExt for *mut T {
type Target = T;
#[inline]
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
- unsafe fn offset(self, count: isize) -> *mut T {
+ unsafe fn offset(self, count: isize) -> *mut T where T: Sized {
intrinsics::offset(self, count) as *mut T
}
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> MutPtrExt for *mut T {
+impl<T: ?Sized> MutPtrExt for *mut T {
type Target = T;
#[inline]
// Equality for pointers
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> PartialEq for *const T {
+impl<T: ?Sized> PartialEq for *const T {
#[inline]
- fn eq(&self, other: &*const T) -> bool {
- *self == *other
- }
- #[inline]
- fn ne(&self, other: &*const T) -> bool { !self.eq(other) }
+ fn eq(&self, other: &*const T) -> bool { *self == *other }
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Eq for *const T {}
+impl<T: ?Sized> Eq for *const T {}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> PartialEq for *mut T {
- #[inline]
- fn eq(&self, other: &*mut T) -> bool {
- *self == *other
- }
+impl<T: ?Sized> PartialEq for *mut T {
#[inline]
- fn ne(&self, other: &*mut T) -> bool { !self.eq(other) }
+ fn eq(&self, other: &*mut T) -> bool { *self == *other }
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Eq for *mut T {}
+impl<T: ?Sized> Eq for *mut T {}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Clone for *const T {
+impl<T: ?Sized> Clone for *const T {
#[inline]
fn clone(&self) -> *const T {
*self
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Clone for *mut T {
+impl<T: ?Sized> Clone for *mut T {
#[inline]
fn clone(&self) -> *mut T {
*self
// Comparison for pointers
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Ord for *const T {
+impl<T: ?Sized> Ord for *const T {
#[inline]
fn cmp(&self, other: &*const T) -> Ordering {
if self < other {
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> PartialOrd for *const T {
+impl<T: ?Sized> PartialOrd for *const T {
#[inline]
fn partial_cmp(&self, other: &*const T) -> Option<Ordering> {
Some(self.cmp(other))
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Ord for *mut T {
+impl<T: ?Sized> Ord for *mut T {
#[inline]
fn cmp(&self, other: &*mut T) -> Ordering {
if self < other {
}
#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> PartialOrd for *mut T {
+impl<T: ?Sized> PartialOrd for *mut T {
#[inline]
fn partial_cmp(&self, other: &*mut T) -> Option<Ordering> {
Some(self.cmp(other))
/// modified without a unique path to the `Unique` reference. Useful
/// for building abstractions like `Vec<T>` or `Box<T>`, which
/// internally use raw pointers to manage the memory that they own.
-#[unstable(feature = "core", reason = "recently added to this module")]
-pub struct Unique<T:?Sized> {
+#[unstable(feature = "unique")]
+pub struct Unique<T: ?Sized> {
pointer: NonZero<*const T>,
_marker: PhantomData<T>,
}
/// reference is unaliased. Note that this aliasing invariant is
/// unenforced by the type system; the abstraction using the
/// `Unique` must enforce it.
-#[unstable(feature = "core", reason = "recently added to this module")]
+#[unstable(feature = "unique")]
unsafe impl<T: Send + ?Sized> Send for Unique<T> { }
/// `Unique` pointers are `Sync` if `T` is `Sync` because the data they
/// reference is unaliased. Note that this aliasing invariant is
/// unenforced by the type system; the abstraction using the
/// `Unique` must enforce it.
-#[unstable(feature = "core", reason = "recently added to this module")]
+#[unstable(feature = "unique")]
unsafe impl<T: Sync + ?Sized> Sync for Unique<T> { }
-impl<T:?Sized> Unique<T> {
+impl<T: ?Sized> Unique<T> {
/// Create a new `Unique`.
- #[unstable(feature = "core",
- reason = "recently added to this module")]
+ #[unstable(feature = "unique")]
pub unsafe fn new(ptr: *mut T) -> Unique<T> {
Unique { pointer: NonZero::new(ptr as *const T), _marker: PhantomData }
}
/// Dereference the content.
- #[unstable(feature = "core",
- reason = "recently added to this module")]
+ #[unstable(feature = "unique")]
pub unsafe fn get(&self) -> &T {
&**self.pointer
}
/// Mutably dereference the content.
- #[unstable(feature = "core",
- reason = "recently added to this module")]
+ #[unstable(feature = "unique")]
pub unsafe fn get_mut(&mut self) -> &mut T {
&mut ***self
}
}
+#[unstable(feature = "unique")]
impl<T:?Sized> Deref for Unique<T> {
type Target = *mut T;
/// ```
/// let x: Result<u32, &str> = Ok(5);
/// let v: Vec<u32> = x.into_iter().collect();
- /// assert_eq!(v, vec![5]);
+ /// assert_eq!(v, [5]);
///
/// let x: Result<u32, &str> = Err("nothing!");
/// let v: Vec<u32> = x.into_iter().collect();
- /// assert_eq!(v, vec![]);
+ /// assert_eq!(v, []);
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
- pub fn or(self, res: Result<T, E>) -> Result<T, E> {
+ pub fn or<F>(self, res: Result<T, F>) -> Result<T, F> {
match self {
- Ok(_) => self,
+ Ok(v) => Ok(v),
Err(_) => res,
}
}
use cmp::Ordering::{Less, Equal, Greater};
use cmp;
use default::Default;
+use intrinsics::assume;
use iter::*;
use ops::{FnMut, self, Index};
use ops::RangeFull;
use ptr::PtrExt;
use mem;
use mem::size_of;
-use marker::{Sized, self};
+use marker::{Send, Sized, Sync, self};
use raw::Repr;
// Avoid conflicts with *both* the Slice trait (buggy) and the `slice::raw` module.
use raw::Slice as RawSlice;
fn iter<'a>(&'a self) -> Iter<'a, T> {
unsafe {
let p = self.as_ptr();
+ assume(!p.is_null());
if mem::size_of::<T>() == 0 {
Iter {ptr: p,
end: (p as usize + self.len()) as *const T,
fn iter_mut<'a>(&'a mut self) -> IterMut<'a, T> {
unsafe {
let p = self.as_mut_ptr();
+ assume(!p.is_null());
if mem::size_of::<T>() == 0 {
IterMut {ptr: p,
end: (p as usize + self.len()) as *mut T,
_marker: marker::PhantomData<&'a T>,
}
+unsafe impl<'a, T: Sync> Sync for Iter<'a, T> {}
+unsafe impl<'a, T: Sync> Send for Iter<'a, T> {}
+
#[unstable(feature = "core")]
impl<'a, T> ops::Index<ops::Range<usize>> for Iter<'a, T> {
type Output = [T];
_marker: marker::PhantomData<&'a mut T>,
}
+unsafe impl<'a, T: Sync> Sync for IterMut<'a, T> {}
+unsafe impl<'a, T: Send> Send for IterMut<'a, T> {}
#[unstable(feature = "core")]
impl<'a, T> ops::Index<ops::Range<usize>> for IterMut<'a, T> {
impl MutableByteVector for [u8] {
#[inline]
fn set_memory(&mut self, value: u8) {
- unsafe { ptr::set_memory(self.as_mut_ptr(), value, self.len()) };
+ unsafe { ptr::write_bytes(self.as_mut_ptr(), value, self.len()) };
}
}
// `dst` is unaliasable, so we know statically it doesn't overlap
// with `src`.
unsafe {
- ptr::copy_nonoverlapping_memory(dst.as_mut_ptr(),
- src.as_ptr(),
- len_src);
+ ptr::copy_nonoverlapping(dst.as_mut_ptr(),
+ src.as_ptr(),
+ len_src);
}
}
}
type Item = &'a str;
#[inline]
+ #[allow(deprecated)]
fn next(&mut self) -> Option<&'a str> {
Iterator::next(&mut self.0)
}
fn test_counter_from_iter() {
let it = count(0, 5).take(10);
let xs: Vec<int> = FromIterator::from_iter(it);
- assert!(xs == vec![0, 5, 10, 15, 20, 25, 30, 35, 40, 45]);
+ assert_eq!(xs, [0, 5, 10, 15, 20, 25, 30, 35, 40, 45]);
}
#[test]
fn test_filter_map() {
let it = count(0, 1).take(10)
.filter_map(|x| if x % 2 == 0 { Some(x*x) } else { None });
- assert!(it.collect::<Vec<uint>>() == vec![0*0, 2*2, 4*4, 6*6, 8*8]);
+ assert_eq!(it.collect::<Vec<uint>>(), [0*0, 2*2, 4*4, 6*6, 8*8]);
}
#[test]
#[test]
fn test_double_ended_range() {
- assert!((11..14).rev().collect::<Vec<_>>() == vec![13, 12, 11]);
+ assert_eq!((11..14).rev().collect::<Vec<_>>(), [13, 12, 11]);
for _ in (10..0).rev() {
panic!("unreachable");
}
- assert!((11..14).rev().collect::<Vec<_>>() == vec![13, 12, 11]);
+ assert_eq!((11..14).rev().collect::<Vec<_>>(), [13, 12, 11]);
for _ in (10..0).rev() {
panic!("unreachable");
}
#[test]
fn test_range() {
- assert!((0..5).collect::<Vec<_>>() == vec![0, 1, 2, 3, 4]);
- assert!((-10..-1).collect::<Vec<_>>() ==
- vec![-10, -9, -8, -7, -6, -5, -4, -3, -2]);
- assert!((0..5).rev().collect::<Vec<_>>() == vec![4, 3, 2, 1, 0]);
+ assert_eq!((0..5).collect::<Vec<_>>(), [0, 1, 2, 3, 4]);
+ assert_eq!((-10..-1).collect::<Vec<_>>(), [-10, -9, -8, -7, -6, -5, -4, -3, -2]);
+ assert_eq!((0..5).rev().collect::<Vec<_>>(), [4, 3, 2, 1, 0]);
assert_eq!((200..-5).count(), 0);
assert_eq!((200..-5).rev().count(), 0);
assert_eq!((200..200).count(), 0);
vec![5, 4, 3, 2, 1, 0]);
assert_eq!(range_inclusive(200, -5).count(), 0);
assert_eq!(range_inclusive(200, -5).rev().count(), 0);
- assert!(range_inclusive(200, 200).collect::<Vec<int>>() == vec![200]);
- assert!(range_inclusive(200, 200).rev().collect::<Vec<int>>() == vec![200]);
+ assert_eq!(range_inclusive(200, 200).collect::<Vec<int>>(), [200]);
+ assert_eq!(range_inclusive(200, 200).rev().collect::<Vec<int>>(), [200]);
}
#[test]
fn test_range_step() {
- assert!(range_step(0, 20, 5).collect::<Vec<int>>() ==
- vec![0, 5, 10, 15]);
- assert!(range_step(20, 0, -5).collect::<Vec<int>>() ==
- vec![20, 15, 10, 5]);
- assert!(range_step(20, 0, -6).collect::<Vec<int>>() ==
- vec![20, 14, 8, 2]);
- assert!(range_step(200u8, 255, 50).collect::<Vec<u8>>() ==
- vec![200u8, 250]);
- assert!(range_step(200, -5, 1).collect::<Vec<int>>() == vec![]);
- assert!(range_step(200, 200, 1).collect::<Vec<int>>() == vec![]);
+ assert_eq!(range_step(0, 20, 5).collect::<Vec<int>>(), [0, 5, 10, 15]);
+ assert_eq!(range_step(20, 0, -5).collect::<Vec<int>>(), [20, 15, 10, 5]);
+ assert_eq!(range_step(20, 0, -6).collect::<Vec<int>>(), [20, 14, 8, 2]);
+ assert_eq!(range_step(200u8, 255, 50).collect::<Vec<u8>>(), [200u8, 250]);
+ assert_eq!(range_step(200i, -5, 1).collect::<Vec<int>>(), []);
+ assert_eq!(range_step(200i, 200, 1).collect::<Vec<int>>(), []);
}
#[test]
fn test_range_step_inclusive() {
- assert!(range_step_inclusive(0, 20, 5).collect::<Vec<int>>() ==
- vec![0, 5, 10, 15, 20]);
- assert!(range_step_inclusive(20, 0, -5).collect::<Vec<int>>() ==
- vec![20, 15, 10, 5, 0]);
- assert!(range_step_inclusive(20, 0, -6).collect::<Vec<int>>() ==
- vec![20, 14, 8, 2]);
- assert!(range_step_inclusive(200u8, 255, 50).collect::<Vec<u8>>() ==
- vec![200u8, 250]);
- assert!(range_step_inclusive(200, -5, 1).collect::<Vec<int>>() ==
- vec![]);
- assert!(range_step_inclusive(200, 200, 1).collect::<Vec<int>>() ==
- vec![200]);
+ assert_eq!(range_step_inclusive(0, 20, 5).collect::<Vec<int>>(), [0, 5, 10, 15, 20]);
+ assert_eq!(range_step_inclusive(20, 0, -5).collect::<Vec<int>>(), [20, 15, 10, 5, 0]);
+ assert_eq!(range_step_inclusive(20, 0, -6).collect::<Vec<int>>(), [20, 14, 8, 2]);
+ assert_eq!(range_step_inclusive(200u8, 255, 50).collect::<Vec<u8>>(), [200u8, 250]);
+ assert_eq!(range_step_inclusive(200, -5, 1).collect::<Vec<int>>(), []);
+ assert_eq!(range_step_inclusive(200, 200, 1).collect::<Vec<int>>(), [200]);
}
#[test]
}
unsafe {
- assert!(vec![76u8] == transmute::<_, Vec<u8>>("L".to_string()));
+ assert_eq!([76u8], transmute::<_, Vec<u8>>("L".to_string()));
}
}
fn test_match_option_vec() {
let a = Some(vec![1, 2, 3, 4]);
match a {
- Some(v) => assert_eq!(v, vec![1, 2, 3, 4]),
+ Some(v) => assert_eq!(v, [1, 2, 3, 4]),
None => panic!("unexpected None while matching on Some(vec![1, 2, 3, 4])")
}
}
assert_eq!("-9223372036854775808".parse::<i64>().ok(), Some(i64_val));
assert_eq!("-9223372036854775809".parse::<i64>().ok(), None);
}
+
+ #[test]
+ fn test_int_from_minus_sign() {
+ assert_eq!("-".parse::<i32>().ok(), None);
+ }
}
m_ptr = m_ptr.offset(-1);
}
- assert!(xs_mut == vec![0,2,4,6,8,10,12,14,16,18]);
+ assert_eq!(xs_mut, [0,2,4,6,8,10,12,14,16,18]);
}
}
#[test]
pub fn test_or() {
- assert_eq!(op1().or(Ok(667)).unwrap(), 666);
+ assert_eq!(op1().or(Ok::<_, &'static str>(667)).unwrap(), 666);
assert_eq!(op1().or(Err("bad")).unwrap(), 666);
- assert_eq!(op2().or(Ok(667)).unwrap(), 667);
+ assert_eq!(op2().or(Ok::<_, &'static str>(667)).unwrap(), 667);
assert_eq!(op2().or(Err("bad")).unwrap_err(), "bad");
}
let mut iter = data.iter_mut();
assert_eq!(&iter[..], &other_data[..]);
// mutability:
- assert!(&mut iter[] == other_data);
+ assert!(&mut iter[..] == other_data);
iter.next();
assert_eq!(&iter[..], &other_data[1..]);
- assert!(&mut iter[] == &mut other_data[1..]);
+ assert!(&mut iter[..] == &mut other_data[1..]);
iter.next_back();
assert_eq!(&iter[..], &other_data[1..2]);
- assert!(&mut iter[] == &mut other_data[1..2]);
+ assert!(&mut iter[..] == &mut other_data[1..2]);
let s = iter.into_slice();
assert!(s == &mut other_data[1..2]);
fn test_empty_match_indices() {
let data = "aä中!";
let vec: Vec<_> = data.match_indices("").collect();
- assert_eq!(vec, vec![(0, 0), (1, 1), (3, 3), (6, 6), (7, 7)]);
+ assert_eq!(vec, [(0, 0), (1, 1), (3, 3), (6, 6), (7, 7)]);
}
#[test]
let mut split: Vec<&str> = data.rsplitn(3, ' ').collect();
split.reverse();
- assert_eq!(split, vec!["\nMäry häd ä", "little", "lämb\nLittle", "lämb\n"]);
+ assert_eq!(split, ["\nMäry häd ä", "little", "lämb\nLittle", "lämb\n"]);
let mut split: Vec<&str> = data.rsplitn(3, |c: char| c == ' ').collect();
split.reverse();
- assert_eq!(split, vec!["\nMäry häd ä", "little", "lämb\nLittle", "lämb\n"]);
+ assert_eq!(split, ["\nMäry häd ä", "little", "lämb\nLittle", "lämb\n"]);
// Unicode
let mut split: Vec<&str> = data.rsplitn(3, 'ä').collect();
split.reverse();
- assert_eq!(split, vec!["\nMäry häd ", " little l", "mb\nLittle l", "mb\n"]);
+ assert_eq!(split, ["\nMäry häd ", " little l", "mb\nLittle l", "mb\n"]);
let mut split: Vec<&str> = data.rsplitn(3, |c: char| c == 'ä').collect();
split.reverse();
- assert_eq!(split, vec!["\nMäry häd ", " little l", "mb\nLittle l", "mb\n"]);
+ assert_eq!(split, ["\nMäry häd ", " little l", "mb\nLittle l", "mb\n"]);
}
#[test]
let data = "\nMäry häd ä little lämb\nLittle lämb\n";
let split: Vec<&str> = data.split(' ').collect();
- assert_eq!( split, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
+ assert_eq!( split, ["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
let mut rsplit: Vec<&str> = data.split(' ').rev().collect();
rsplit.reverse();
- assert_eq!(rsplit, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
+ assert_eq!(rsplit, ["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
let split: Vec<&str> = data.split(|c: char| c == ' ').collect();
- assert_eq!( split, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
+ assert_eq!( split, ["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
let mut rsplit: Vec<&str> = data.split(|c: char| c == ' ').rev().collect();
rsplit.reverse();
- assert_eq!(rsplit, vec!["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
+ assert_eq!(rsplit, ["\nMäry", "häd", "ä", "little", "lämb\nLittle", "lämb\n"]);
// Unicode
let split: Vec<&str> = data.split('ä').collect();
- assert_eq!( split, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
+ assert_eq!( split, ["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
let mut rsplit: Vec<&str> = data.split('ä').rev().collect();
rsplit.reverse();
- assert_eq!(rsplit, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
+ assert_eq!(rsplit, ["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
let split: Vec<&str> = data.split(|c: char| c == 'ä').collect();
- assert_eq!( split, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
+ assert_eq!( split, ["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
let mut rsplit: Vec<&str> = data.split(|c: char| c == 'ä').rev().collect();
rsplit.reverse();
- assert_eq!(rsplit, vec!["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
+ assert_eq!(rsplit, ["\nM", "ry h", "d ", " little l", "mb\nLittle l", "mb\n"]);
}
#[test]
let mut split: Vec<&str> = data.split('\n').rev().collect();
split.reverse();
- assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb", ""]);
+ assert_eq!(split, ["", "Märy häd ä little lämb", "Little lämb", ""]);
let mut split: Vec<&str> = data.split_terminator('\n').rev().collect();
split.reverse();
- assert_eq!(split, vec!["", "Märy häd ä little lämb", "Little lämb"]);
+ assert_eq!(split, ["", "Märy häd ä little lämb", "Little lämb"]);
}
#[test]
fn test_utf16_code_units() {
use unicode::str::Utf16Encoder;
assert_eq!(Utf16Encoder::new(vec!['é', '\u{1F4A9}'].into_iter()).collect::<Vec<u16>>(),
- vec![0xE9, 0xD83D, 0xDCA9])
+ [0xE9, 0xD83D, 0xDCA9])
}
#[test]
#![feature(int_uint)]
#![feature(libc)]
#![feature(staged_api)]
+#![feature(unique)]
#[cfg(test)] #[macro_use] extern crate log;
use types::os::arch::c95::{c_long};
pub type off_t = i64;
pub type dev_t = i32;
- pub type ino_t = u64;
pub type pid_t = i32;
pub type uid_t = u32;
pub type gid_t = u32;
#[macro_export]
macro_rules! log {
($lvl:expr, $($arg:tt)+) => ({
- #[cfg(stage0)]
- static LOC: ::log::LogLocation = ::log::LogLocation {
- line: line!() as u32,
- file: file!(),
- module_path: module_path!(),
- };
- #[cfg(not(stage0))]
static LOC: ::log::LogLocation = ::log::LogLocation {
line: line!(),
file: file!(),
/// Reseed an RNG using a `Default` instance. This reseeds by
/// replacing the RNG with the result of a `Default::default` call.
#[derive(Copy)]
-pub struct ReseedWithDefault { __hack: [u8; 0] }
-// FIXME(#21721) used to be an unit struct but that can cause
-// certain LLVM versions to abort during optimizations.
-#[allow(non_upper_case_globals)]
-pub const ReseedWithDefault: ReseedWithDefault = ReseedWithDefault { __hack: [] };
+pub struct ReseedWithDefault;
impl<R: Rng + Default> Reseeder<R> for ReseedWithDefault {
fn reseed(&mut self, rng: &mut R) {
/// let mut w = SeekableMemWriter::new();
/// w.write(&[0, 1, 2]);
///
-/// assert_eq!(w.unwrap(), vec!(0, 1, 2));
+/// assert_eq!(w.unwrap(), [0, 1, 2]);
/// ```
pub struct SeekableMemWriter {
buf: Vec<u8>,
#![feature(unsafe_destructor)]
#![feature(staged_api)]
#![feature(std_misc)]
-#![feature(unicode)]
+#![feature(os)]
#![cfg_attr(test, feature(test))]
extern crate arena;
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-//! Lints built in to rustc.
+//! Some lints that are built in to the compiler.
//!
-//! This is a sibling of `lint::context` in order to ensure that
-//! lints implemented here use the same public API as lint plugins.
-//!
-//! To add a new lint to rustc, declare it here using `declare_lint!()`.
-//! Then add code to emit the new lint in the appropriate circumstances.
-//! You can do that in an existing `LintPass` if it makes sense, or in
-//! a new `LintPass`, or using `Session::add_lint` elsewhere in the
-//! compiler. Only do the latter if the check can't be written cleanly
-//! as a `LintPass`.
-//!
-//! If you define a new `LintPass`, you will also need to add it to the
-//! `add_builtin!` or `add_builtin_with_new!` invocation in `context.rs`.
-//! Use the former for unit-like structs and the latter for structs with
-//! a `pub fn new()`.
-use self::MethodContext::*;
-
-use metadata::{csearch, decoder};
-use middle::def::*;
-use middle::subst::Substs;
-use middle::ty::{self, Ty};
-use middle::{def, pat_util, stability};
-use middle::const_eval::{eval_const_expr_partial, const_int, const_uint};
-use middle::cfg;
-use util::ppaux::{ty_to_string};
-use util::nodemap::{FnvHashMap, NodeSet};
-use lint::{Level, Context, LintPass, LintArray, Lint};
-
-use std::collections::BitSet;
-use std::collections::hash_map::Entry::{Occupied, Vacant};
-use std::num::SignedInt;
-use std::{cmp, slice};
-use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64};
-
-use syntax::{abi, ast, ast_map};
-use syntax::ast_util::is_shift_binop;
-use syntax::attr::{self, AttrMetaMethods};
-use syntax::codemap::{self, Span};
-use syntax::feature_gate::{KNOWN_ATTRIBUTES, AttributeType};
-use syntax::parse::token;
-use syntax::ast::{TyIs, TyUs, TyI8, TyU8, TyI16, TyU16, TyI32, TyU32, TyI64, TyU64};
-use syntax::ast_util;
-use syntax::ptr::P;
-use syntax::visit::{self, Visitor};
-
-declare_lint! {
- WHILE_TRUE,
- Warn,
- "suggest using `loop { }` instead of `while true { }`"
-}
-
-#[derive(Copy)]
-pub struct WhileTrue;
-
-impl LintPass for WhileTrue {
- fn get_lints(&self) -> LintArray {
- lint_array!(WHILE_TRUE)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- if let ast::ExprWhile(ref cond, _, _) = e.node {
- if let ast::ExprLit(ref lit) = cond.node {
- if let ast::LitBool(true) = lit.node {
- cx.span_lint(WHILE_TRUE, e.span,
- "denote infinite loops with loop { ... }");
- }
- }
- }
- }
-}
-
-declare_lint! {
- UNUSED_TYPECASTS,
- Allow,
- "detects unnecessary type casts that can be removed"
-}
-
-#[derive(Copy)]
-pub struct UnusedCasts;
-
-impl LintPass for UnusedCasts {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_TYPECASTS)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- if let ast::ExprCast(ref expr, ref ty) = e.node {
- let t_t = ty::expr_ty(cx.tcx, e);
- if ty::expr_ty(cx.tcx, &**expr) == t_t {
- cx.span_lint(UNUSED_TYPECASTS, ty.span, "unnecessary type cast");
- }
- }
- }
-}
-
-declare_lint! {
- UNSIGNED_NEGATION,
- Warn,
- "using an unary minus operator on unsigned type"
-}
-
-declare_lint! {
- UNUSED_COMPARISONS,
- Warn,
- "comparisons made useless by limits of the types involved"
-}
-
-declare_lint! {
- OVERFLOWING_LITERALS,
- Warn,
- "literal out of range for its type"
-}
-
-declare_lint! {
- EXCEEDING_BITSHIFTS,
- Deny,
- "shift exceeds the type's number of bits"
-}
-
-#[derive(Copy)]
-pub struct TypeLimits {
- /// Id of the last visited negated expression
- negated_expr_id: ast::NodeId,
-}
-
-impl TypeLimits {
- pub fn new() -> TypeLimits {
- TypeLimits {
- negated_expr_id: -1,
- }
- }
-}
-
-impl LintPass for TypeLimits {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNSIGNED_NEGATION, UNUSED_COMPARISONS, OVERFLOWING_LITERALS,
- EXCEEDING_BITSHIFTS)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- match e.node {
- ast::ExprUnary(ast::UnNeg, ref expr) => {
- match expr.node {
- ast::ExprLit(ref lit) => {
- match lit.node {
- ast::LitInt(_, ast::UnsignedIntLit(_)) => {
- cx.span_lint(UNSIGNED_NEGATION, e.span,
- "negation of unsigned int literal may \
- be unintentional");
- },
- _ => ()
- }
- },
- _ => {
- let t = ty::expr_ty(cx.tcx, &**expr);
- match t.sty {
- ty::ty_uint(_) => {
- cx.span_lint(UNSIGNED_NEGATION, e.span,
- "negation of unsigned int variable may \
- be unintentional");
- },
- _ => ()
- }
- }
- };
- // propagate negation, if the negation itself isn't negated
- if self.negated_expr_id != e.id {
- self.negated_expr_id = expr.id;
- }
- },
- ast::ExprParen(ref expr) if self.negated_expr_id == e.id => {
- self.negated_expr_id = expr.id;
- },
- ast::ExprBinary(binop, ref l, ref r) => {
- if is_comparison(binop) && !check_limits(cx.tcx, binop, &**l, &**r) {
- cx.span_lint(UNUSED_COMPARISONS, e.span,
- "comparison is useless due to type limits");
- }
-
- if is_shift_binop(binop.node) {
- let opt_ty_bits = match ty::expr_ty(cx.tcx, &**l).sty {
- ty::ty_int(t) => Some(int_ty_bits(t, cx.sess().target.int_type)),
- ty::ty_uint(t) => Some(uint_ty_bits(t, cx.sess().target.uint_type)),
- _ => None
- };
-
- if let Some(bits) = opt_ty_bits {
- let exceeding = if let ast::ExprLit(ref lit) = r.node {
- if let ast::LitInt(shift, _) = lit.node { shift >= bits }
- else { false }
- } else {
- match eval_const_expr_partial(cx.tcx, &**r, Some(cx.tcx.types.uint)) {
- Ok(const_int(shift)) => { shift as u64 >= bits },
- Ok(const_uint(shift)) => { shift >= bits },
- _ => { false }
- }
- };
- if exceeding {
- cx.span_lint(EXCEEDING_BITSHIFTS, e.span,
- "bitshift exceeds the type's number of bits");
- }
- };
- }
- },
- ast::ExprLit(ref lit) => {
- match ty::expr_ty(cx.tcx, e).sty {
- ty::ty_int(t) => {
- match lit.node {
- ast::LitInt(v, ast::SignedIntLit(_, ast::Plus)) |
- ast::LitInt(v, ast::UnsuffixedIntLit(ast::Plus)) => {
- let int_type = if let ast::TyIs(_) = t {
- cx.sess().target.int_type
- } else { t };
- let (min, max) = int_ty_range(int_type);
- let negative = self.negated_expr_id == e.id;
-
- if (negative && v > (min.abs() as u64)) ||
- (!negative && v > (max.abs() as u64)) {
- cx.span_lint(OVERFLOWING_LITERALS, e.span,
- &*format!("literal out of range for {:?}", t));
- return;
- }
- }
- _ => panic!()
- };
- },
- ty::ty_uint(t) => {
- let uint_type = if let ast::TyUs(_) = t {
- cx.sess().target.uint_type
- } else { t };
- let (min, max) = uint_ty_range(uint_type);
- let lit_val: u64 = match lit.node {
- ast::LitByte(_v) => return, // _v is u8, within range by definition
- ast::LitInt(v, _) => v,
- _ => panic!()
- };
- if lit_val < min || lit_val > max {
- cx.span_lint(OVERFLOWING_LITERALS, e.span,
- &*format!("literal out of range for {:?}", t));
- }
- },
- ty::ty_float(t) => {
- let (min, max) = float_ty_range(t);
- let lit_val: f64 = match lit.node {
- ast::LitFloat(ref v, _) |
- ast::LitFloatUnsuffixed(ref v) => {
- match v.parse().ok() {
- Some(f) => f,
- None => return
- }
- }
- _ => panic!()
- };
- if lit_val < min || lit_val > max {
- cx.span_lint(OVERFLOWING_LITERALS, e.span,
- &*format!("literal out of range for {:?}", t));
- }
- },
- _ => ()
- };
- },
- _ => ()
- };
-
- fn is_valid<T:cmp::PartialOrd>(binop: ast::BinOp, v: T,
- min: T, max: T) -> bool {
- match binop.node {
- ast::BiLt => v > min && v <= max,
- ast::BiLe => v >= min && v < max,
- ast::BiGt => v >= min && v < max,
- ast::BiGe => v > min && v <= max,
- ast::BiEq | ast::BiNe => v >= min && v <= max,
- _ => panic!()
- }
- }
-
- fn rev_binop(binop: ast::BinOp) -> ast::BinOp {
- codemap::respan(binop.span, match binop.node {
- ast::BiLt => ast::BiGt,
- ast::BiLe => ast::BiGe,
- ast::BiGt => ast::BiLt,
- ast::BiGe => ast::BiLe,
- _ => return binop
- })
- }
-
- // for int & uint, be conservative with the warnings, so that the
- // warnings are consistent between 32- and 64-bit platforms
- fn int_ty_range(int_ty: ast::IntTy) -> (i64, i64) {
- match int_ty {
- ast::TyIs(_) => (i64::MIN, i64::MAX),
- ast::TyI8 => (i8::MIN as i64, i8::MAX as i64),
- ast::TyI16 => (i16::MIN as i64, i16::MAX as i64),
- ast::TyI32 => (i32::MIN as i64, i32::MAX as i64),
- ast::TyI64 => (i64::MIN, i64::MAX)
- }
- }
-
- fn uint_ty_range(uint_ty: ast::UintTy) -> (u64, u64) {
- match uint_ty {
- ast::TyUs(_) => (u64::MIN, u64::MAX),
- ast::TyU8 => (u8::MIN as u64, u8::MAX as u64),
- ast::TyU16 => (u16::MIN as u64, u16::MAX as u64),
- ast::TyU32 => (u32::MIN as u64, u32::MAX as u64),
- ast::TyU64 => (u64::MIN, u64::MAX)
- }
- }
-
- fn float_ty_range(float_ty: ast::FloatTy) -> (f64, f64) {
- match float_ty {
- ast::TyF32 => (f32::MIN as f64, f32::MAX as f64),
- ast::TyF64 => (f64::MIN, f64::MAX)
- }
- }
-
- fn int_ty_bits(int_ty: ast::IntTy, target_int_ty: ast::IntTy) -> u64 {
- match int_ty {
- ast::TyIs(_) => int_ty_bits(target_int_ty, target_int_ty),
- ast::TyI8 => i8::BITS as u64,
- ast::TyI16 => i16::BITS as u64,
- ast::TyI32 => i32::BITS as u64,
- ast::TyI64 => i64::BITS as u64
- }
- }
-
- fn uint_ty_bits(uint_ty: ast::UintTy, target_uint_ty: ast::UintTy) -> u64 {
- match uint_ty {
- ast::TyUs(_) => uint_ty_bits(target_uint_ty, target_uint_ty),
- ast::TyU8 => u8::BITS as u64,
- ast::TyU16 => u16::BITS as u64,
- ast::TyU32 => u32::BITS as u64,
- ast::TyU64 => u64::BITS as u64
- }
- }
-
- fn check_limits(tcx: &ty::ctxt, binop: ast::BinOp,
- l: &ast::Expr, r: &ast::Expr) -> bool {
- let (lit, expr, swap) = match (&l.node, &r.node) {
- (&ast::ExprLit(_), _) => (l, r, true),
- (_, &ast::ExprLit(_)) => (r, l, false),
- _ => return true
- };
- // Normalize the binop so that the literal is always on the RHS in
- // the comparison
- let norm_binop = if swap { rev_binop(binop) } else { binop };
- match ty::expr_ty(tcx, expr).sty {
- ty::ty_int(int_ty) => {
- let (min, max) = int_ty_range(int_ty);
- let lit_val: i64 = match lit.node {
- ast::ExprLit(ref li) => match li.node {
- ast::LitInt(v, ast::SignedIntLit(_, ast::Plus)) |
- ast::LitInt(v, ast::UnsuffixedIntLit(ast::Plus)) => v as i64,
- ast::LitInt(v, ast::SignedIntLit(_, ast::Minus)) |
- ast::LitInt(v, ast::UnsuffixedIntLit(ast::Minus)) => -(v as i64),
- _ => return true
- },
- _ => panic!()
- };
- is_valid(norm_binop, lit_val, min, max)
- }
- ty::ty_uint(uint_ty) => {
- let (min, max): (u64, u64) = uint_ty_range(uint_ty);
- let lit_val: u64 = match lit.node {
- ast::ExprLit(ref li) => match li.node {
- ast::LitInt(v, _) => v,
- _ => return true
- },
- _ => panic!()
- };
- is_valid(norm_binop, lit_val, min, max)
- }
- _ => true
- }
- }
-
- fn is_comparison(binop: ast::BinOp) -> bool {
- match binop.node {
- ast::BiEq | ast::BiLt | ast::BiLe |
- ast::BiNe | ast::BiGe | ast::BiGt => true,
- _ => false
- }
- }
- }
-}
-
-declare_lint! {
- IMPROPER_CTYPES,
- Warn,
- "proper use of libc types in foreign modules"
-}
-
-struct ImproperCTypesVisitor<'a, 'tcx: 'a> {
- cx: &'a Context<'a, 'tcx>
-}
-
-impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
- fn check_def(&mut self, sp: Span, ty_id: ast::NodeId, path_id: ast::NodeId) {
- match self.cx.tcx.def_map.borrow()[path_id].clone() {
- def::DefPrimTy(ast::TyInt(ast::TyIs(_))) => {
- self.cx.span_lint(IMPROPER_CTYPES, sp,
- "found rust type `isize` in foreign module, while \
- libc::c_int or libc::c_long should be used");
- }
- def::DefPrimTy(ast::TyUint(ast::TyUs(_))) => {
- self.cx.span_lint(IMPROPER_CTYPES, sp,
- "found rust type `usize` in foreign module, while \
- libc::c_uint or libc::c_ulong should be used");
- }
- def::DefTy(..) => {
- let tty = match self.cx.tcx.ast_ty_to_ty_cache.borrow().get(&ty_id) {
- Some(&ty::atttce_resolved(t)) => t,
- _ => panic!("ast_ty_to_ty_cache was incomplete after typeck!")
- };
-
- if !ty::is_ffi_safe(self.cx.tcx, tty) {
- self.cx.span_lint(IMPROPER_CTYPES, sp,
- "found type without foreign-function-safe
- representation annotation in foreign module, consider \
- adding a #[repr(...)] attribute to the type");
- }
- }
- _ => ()
- }
- }
-}
-
-impl<'a, 'tcx, 'v> Visitor<'v> for ImproperCTypesVisitor<'a, 'tcx> {
- fn visit_ty(&mut self, ty: &ast::Ty) {
- match ty.node {
- ast::TyPath(_, id) => self.check_def(ty.span, ty.id, id),
- _ => (),
- }
- visit::walk_ty(self, ty);
- }
-}
-
-#[derive(Copy)]
-pub struct ImproperCTypes;
-
-impl LintPass for ImproperCTypes {
- fn get_lints(&self) -> LintArray {
- lint_array!(IMPROPER_CTYPES)
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- fn check_ty(cx: &Context, ty: &ast::Ty) {
- let mut vis = ImproperCTypesVisitor { cx: cx };
- vis.visit_ty(ty);
- }
-
- fn check_foreign_fn(cx: &Context, decl: &ast::FnDecl) {
- for input in &decl.inputs {
- check_ty(cx, &*input.ty);
- }
- if let ast::Return(ref ret_ty) = decl.output {
- check_ty(cx, &**ret_ty);
- }
- }
-
- match it.node {
- ast::ItemForeignMod(ref nmod) if nmod.abi != abi::RustIntrinsic => {
- for ni in &nmod.items {
- match ni.node {
- ast::ForeignItemFn(ref decl, _) => check_foreign_fn(cx, &**decl),
- ast::ForeignItemStatic(ref t, _) => check_ty(cx, &**t)
- }
- }
- }
- _ => (),
- }
- }
-}
-
-declare_lint! {
- BOX_POINTERS,
- Allow,
- "use of owned (Box type) heap memory"
-}
-
-#[derive(Copy)]
-pub struct BoxPointers;
-
-impl BoxPointers {
- fn check_heap_type<'a, 'tcx>(&self, cx: &Context<'a, 'tcx>,
- span: Span, ty: Ty<'tcx>) {
- let mut n_uniq: usize = 0;
- ty::fold_ty(cx.tcx, ty, |t| {
- match t.sty {
- ty::ty_uniq(_) => {
- n_uniq += 1;
- }
- _ => ()
- };
- t
- });
-
- if n_uniq > 0 {
- let s = ty_to_string(cx.tcx, ty);
- let m = format!("type uses owned (Box type) pointers: {}", s);
- cx.span_lint(BOX_POINTERS, span, &m[..]);
- }
- }
-}
-
-impl LintPass for BoxPointers {
- fn get_lints(&self) -> LintArray {
- lint_array!(BOX_POINTERS)
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- match it.node {
- ast::ItemFn(..) |
- ast::ItemTy(..) |
- ast::ItemEnum(..) |
- ast::ItemStruct(..) =>
- self.check_heap_type(cx, it.span,
- ty::node_id_to_type(cx.tcx, it.id)),
- _ => ()
- }
-
- // If it's a struct, we also have to check the fields' types
- match it.node {
- ast::ItemStruct(ref struct_def, _) => {
- for struct_field in &struct_def.fields {
- self.check_heap_type(cx, struct_field.span,
- ty::node_id_to_type(cx.tcx, struct_field.node.id));
- }
- }
- _ => ()
- }
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- let ty = ty::expr_ty(cx.tcx, e);
- self.check_heap_type(cx, e.span, ty);
- }
-}
-
-declare_lint! {
- RAW_POINTER_DERIVE,
- Warn,
- "uses of #[derive] with raw pointers are rarely correct"
-}
-
-struct RawPtrDeriveVisitor<'a, 'tcx: 'a> {
- cx: &'a Context<'a, 'tcx>
-}
-
-impl<'a, 'tcx, 'v> Visitor<'v> for RawPtrDeriveVisitor<'a, 'tcx> {
- fn visit_ty(&mut self, ty: &ast::Ty) {
- static MSG: &'static str = "use of `#[derive]` with a raw pointer";
- if let ast::TyPtr(..) = ty.node {
- self.cx.span_lint(RAW_POINTER_DERIVE, ty.span, MSG);
- }
- visit::walk_ty(self, ty);
- }
- // explicit override to a no-op to reduce code bloat
- fn visit_expr(&mut self, _: &ast::Expr) {}
- fn visit_block(&mut self, _: &ast::Block) {}
-}
-
-pub struct RawPointerDerive {
- checked_raw_pointers: NodeSet,
-}
-
-impl RawPointerDerive {
- pub fn new() -> RawPointerDerive {
- RawPointerDerive {
- checked_raw_pointers: NodeSet(),
- }
- }
-}
-
-impl LintPass for RawPointerDerive {
- fn get_lints(&self) -> LintArray {
- lint_array!(RAW_POINTER_DERIVE)
- }
-
- fn check_item(&mut self, cx: &Context, item: &ast::Item) {
- if !attr::contains_name(&item.attrs, "automatically_derived") {
- return
- }
- let did = match item.node {
- ast::ItemImpl(_, _, _, ref t_ref_opt, _, _) => {
- // Deriving the Copy trait does not cause a warning
- if let &Some(ref trait_ref) = t_ref_opt {
- let def_id = ty::trait_ref_to_def_id(cx.tcx, trait_ref);
- if Some(def_id) == cx.tcx.lang_items.copy_trait() {
- return
- }
- }
-
- match ty::node_id_to_type(cx.tcx, item.id).sty {
- ty::ty_enum(did, _) => did,
- ty::ty_struct(did, _) => did,
- _ => return,
- }
- }
- _ => return,
- };
- if !ast_util::is_local(did) { return }
- let item = match cx.tcx.map.find(did.node) {
- Some(ast_map::NodeItem(item)) => item,
- _ => return,
- };
- if !self.checked_raw_pointers.insert(item.id) { return }
- match item.node {
- ast::ItemStruct(..) | ast::ItemEnum(..) => {
- let mut visitor = RawPtrDeriveVisitor { cx: cx };
- visit::walk_item(&mut visitor, &*item);
- }
- _ => {}
- }
- }
-}
-
-declare_lint! {
- UNUSED_ATTRIBUTES,
- Warn,
- "detects attributes that were not used by the compiler"
-}
-
-#[derive(Copy)]
-pub struct UnusedAttributes;
-
-impl LintPass for UnusedAttributes {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_ATTRIBUTES)
- }
-
- fn check_attribute(&mut self, cx: &Context, attr: &ast::Attribute) {
- for &(ref name, ty) in KNOWN_ATTRIBUTES {
- match ty {
- AttributeType::Whitelisted
- | AttributeType::Gated(_, _) if attr.check_name(name) => {
- break;
- },
- _ => ()
- }
- }
-
- if !attr::is_used(attr) {
- cx.span_lint(UNUSED_ATTRIBUTES, attr.span, "unused attribute");
- if KNOWN_ATTRIBUTES.contains(&(&attr.name(), AttributeType::CrateLevel)) {
- let msg = match attr.node.style {
- ast::AttrOuter => "crate-level attribute should be an inner \
- attribute: add an exclamation mark: #![foo]",
- ast::AttrInner => "crate-level attribute should be in the \
- root module",
- };
- cx.span_lint(UNUSED_ATTRIBUTES, attr.span, msg);
- }
- }
- }
-}
-
-declare_lint! {
- pub PATH_STATEMENTS,
- Warn,
- "path statements with no effect"
-}
-
-#[derive(Copy)]
-pub struct PathStatements;
-
-impl LintPass for PathStatements {
- fn get_lints(&self) -> LintArray {
- lint_array!(PATH_STATEMENTS)
- }
-
- fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
- match s.node {
- ast::StmtSemi(ref expr, _) => {
- match expr.node {
- ast::ExprPath(_) => cx.span_lint(PATH_STATEMENTS, s.span,
- "path statement with no effect"),
- _ => ()
- }
- }
- _ => ()
- }
- }
-}
-
-declare_lint! {
- pub UNUSED_MUST_USE,
- Warn,
- "unused result of a type flagged as #[must_use]"
-}
-
-declare_lint! {
- pub UNUSED_RESULTS,
- Allow,
- "unused result of an expression in a statement"
-}
-
-#[derive(Copy)]
-pub struct UnusedResults;
-
-impl LintPass for UnusedResults {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_MUST_USE, UNUSED_RESULTS)
- }
-
- fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
- let expr = match s.node {
- ast::StmtSemi(ref expr, _) => &**expr,
- _ => return
- };
-
- if let ast::ExprRet(..) = expr.node {
- return;
- }
-
- let t = ty::expr_ty(cx.tcx, expr);
- let mut warned = false;
- match t.sty {
- ty::ty_tup(ref tys) if tys.is_empty() => return,
- ty::ty_bool => return,
- ty::ty_struct(did, _) |
- ty::ty_enum(did, _) => {
- if ast_util::is_local(did) {
- if let ast_map::NodeItem(it) = cx.tcx.map.get(did.node) {
- warned |= check_must_use(cx, &it.attrs, s.span);
- }
- } else {
- let attrs = csearch::get_item_attrs(&cx.sess().cstore, did);
- warned |= check_must_use(cx, &attrs[..], s.span);
- }
- }
- _ => {}
- }
- if !warned {
- cx.span_lint(UNUSED_RESULTS, s.span, "unused result");
- }
-
- fn check_must_use(cx: &Context, attrs: &[ast::Attribute], sp: Span) -> bool {
- for attr in attrs {
- if attr.check_name("must_use") {
- let mut msg = "unused result which must be used".to_string();
- // check for #[must_use="..."]
- match attr.value_str() {
- None => {}
- Some(s) => {
- msg.push_str(": ");
- msg.push_str(&s);
- }
- }
- cx.span_lint(UNUSED_MUST_USE, sp, &msg);
- return true;
- }
- }
- false
- }
- }
-}
-
-declare_lint! {
- pub NON_CAMEL_CASE_TYPES,
- Warn,
- "types, variants, traits and type parameters should have camel case names"
-}
-
-#[derive(Copy)]
-pub struct NonCamelCaseTypes;
-
-impl NonCamelCaseTypes {
- fn check_case(&self, cx: &Context, sort: &str, ident: ast::Ident, span: Span) {
- fn is_camel_case(ident: ast::Ident) -> bool {
- let ident = token::get_ident(ident);
- if ident.is_empty() { return true; }
- let ident = ident.trim_matches('_');
-
- // start with a non-lowercase letter rather than non-uppercase
- // ones (some scripts don't have a concept of upper/lowercase)
- ident.len() > 0 && !ident.char_at(0).is_lowercase() && !ident.contains('_')
- }
-
- fn to_camel_case(s: &str) -> String {
- s.split('_').flat_map(|word| word.chars().enumerate().map(|(i, c)|
- if i == 0 { c.to_uppercase() }
- else { c }
- )).collect()
- }
-
- let s = token::get_ident(ident);
-
- if !is_camel_case(ident) {
- let c = to_camel_case(&s);
- let m = if c.is_empty() {
- format!("{} `{}` should have a camel case name such as `CamelCase`", sort, s)
- } else {
- format!("{} `{}` should have a camel case name such as `{}`", sort, s, c)
- };
- cx.span_lint(NON_CAMEL_CASE_TYPES, span, &m[..]);
- }
- }
-}
-
-impl LintPass for NonCamelCaseTypes {
- fn get_lints(&self) -> LintArray {
- lint_array!(NON_CAMEL_CASE_TYPES)
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- let has_extern_repr = it.attrs.iter().map(|attr| {
- attr::find_repr_attrs(cx.tcx.sess.diagnostic(), attr).iter()
- .any(|r| r == &attr::ReprExtern)
- }).any(|x| x);
- if has_extern_repr { return }
-
- match it.node {
- ast::ItemTy(..) | ast::ItemStruct(..) => {
- self.check_case(cx, "type", it.ident, it.span)
- }
- ast::ItemTrait(..) => {
- self.check_case(cx, "trait", it.ident, it.span)
- }
- ast::ItemEnum(ref enum_definition, _) => {
- if has_extern_repr { return }
- self.check_case(cx, "type", it.ident, it.span);
- for variant in &enum_definition.variants {
- self.check_case(cx, "variant", variant.node.name, variant.span);
- }
- }
- _ => ()
- }
- }
-
- fn check_generics(&mut self, cx: &Context, it: &ast::Generics) {
- for gen in &*it.ty_params {
- self.check_case(cx, "type parameter", gen.ident, gen.span);
- }
- }
-}
-
-#[derive(PartialEq)]
-enum MethodContext {
- TraitDefaultImpl,
- TraitImpl,
- PlainImpl
-}
-
-fn method_context(cx: &Context, m: &ast::Method) -> MethodContext {
- let did = ast::DefId {
- krate: ast::LOCAL_CRATE,
- node: m.id
- };
-
- match cx.tcx.impl_or_trait_items.borrow().get(&did).cloned() {
- None => cx.sess().span_bug(m.span, "missing method descriptor?!"),
- Some(md) => {
- match md {
- ty::MethodTraitItem(md) => {
- match md.container {
- ty::TraitContainer(..) => TraitDefaultImpl,
- ty::ImplContainer(cid) => {
- match ty::impl_trait_ref(cx.tcx, cid) {
- Some(..) => TraitImpl,
- None => PlainImpl
- }
- }
- }
- }
- ty::TypeTraitItem(typedef) => {
- match typedef.container {
- ty::TraitContainer(..) => TraitDefaultImpl,
- ty::ImplContainer(cid) => {
- match ty::impl_trait_ref(cx.tcx, cid) {
- Some(..) => TraitImpl,
- None => PlainImpl
- }
- }
- }
- }
- }
- }
- }
-}
-
-declare_lint! {
- pub NON_SNAKE_CASE,
- Warn,
- "methods, functions, lifetime parameters and modules should have snake case names"
-}
-
-#[derive(Copy)]
-pub struct NonSnakeCase;
-
-impl NonSnakeCase {
- fn to_snake_case(mut str: &str) -> String {
- let mut words = vec![];
- // Preserve leading underscores
- str = str.trim_left_matches(|c: char| {
- if c == '_' {
- words.push(String::new());
- true
- } else { false }
- });
- for s in str.split('_') {
- let mut last_upper = false;
- let mut buf = String::new();
- if s.is_empty() { continue; }
- for ch in s.chars() {
- if !buf.is_empty() && buf != "'"
- && ch.is_uppercase()
- && !last_upper {
- words.push(buf);
- buf = String::new();
- }
- last_upper = ch.is_uppercase();
- buf.push(ch.to_lowercase());
- }
- words.push(buf);
- }
- words.connect("_")
- }
-
- fn check_snake_case(&self, cx: &Context, sort: &str, ident: ast::Ident, span: Span) {
- fn is_snake_case(ident: ast::Ident) -> bool {
- let ident = token::get_ident(ident);
- if ident.is_empty() { return true; }
- let ident = ident.trim_left_matches('\'');
- let ident = ident.trim_matches('_');
-
- let mut allow_underscore = true;
- ident.chars().all(|c| {
- allow_underscore = match c {
- '_' if !allow_underscore => return false,
- '_' => false,
- c if !c.is_uppercase() => true,
- _ => return false,
- };
- true
- })
- }
-
- let s = token::get_ident(ident);
-
- if !is_snake_case(ident) {
- let sc = NonSnakeCase::to_snake_case(&s);
- if sc != &s[..] {
- cx.span_lint(NON_SNAKE_CASE, span,
- &*format!("{} `{}` should have a snake case name such as `{}`",
- sort, s, sc));
- } else {
- cx.span_lint(NON_SNAKE_CASE, span,
- &*format!("{} `{}` should have a snake case name",
- sort, s));
- }
- }
- }
-}
-
-impl LintPass for NonSnakeCase {
- fn get_lints(&self) -> LintArray {
- lint_array!(NON_SNAKE_CASE)
- }
-
- fn check_fn(&mut self, cx: &Context,
- fk: visit::FnKind, _: &ast::FnDecl,
- _: &ast::Block, span: Span, _: ast::NodeId) {
- match fk {
- visit::FkMethod(ident, _, m) => match method_context(cx, m) {
- PlainImpl
- => self.check_snake_case(cx, "method", ident, span),
- TraitDefaultImpl
- => self.check_snake_case(cx, "trait method", ident, span),
- _ => (),
- },
- visit::FkItemFn(ident, _, _, _)
- => self.check_snake_case(cx, "function", ident, span),
- _ => (),
- }
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- if let ast::ItemMod(_) = it.node {
- self.check_snake_case(cx, "module", it.ident, it.span);
- }
- }
-
- fn check_ty_method(&mut self, cx: &Context, t: &ast::TypeMethod) {
- self.check_snake_case(cx, "trait method", t.ident, t.span);
- }
-
- fn check_lifetime_def(&mut self, cx: &Context, t: &ast::LifetimeDef) {
- self.check_snake_case(cx, "lifetime", t.lifetime.name.ident(), t.lifetime.span);
- }
-
- fn check_pat(&mut self, cx: &Context, p: &ast::Pat) {
- if let &ast::PatIdent(_, ref path1, _) = &p.node {
- if let Some(&def::DefLocal(_)) = cx.tcx.def_map.borrow().get(&p.id) {
- self.check_snake_case(cx, "variable", path1.node, p.span);
- }
- }
- }
-
- fn check_struct_def(&mut self, cx: &Context, s: &ast::StructDef,
- _: ast::Ident, _: &ast::Generics, _: ast::NodeId) {
- for sf in &s.fields {
- if let ast::StructField_ { kind: ast::NamedField(ident, _), .. } = sf.node {
- self.check_snake_case(cx, "structure field", ident, sf.span);
- }
- }
- }
-}
-
-declare_lint! {
- pub NON_UPPER_CASE_GLOBALS,
- Warn,
- "static constants should have uppercase identifiers"
-}
-
-#[derive(Copy)]
-pub struct NonUpperCaseGlobals;
-
-impl NonUpperCaseGlobals {
- fn check_upper_case(cx: &Context, sort: &str, ident: ast::Ident, span: Span) {
- let s = token::get_ident(ident);
-
- if s.chars().any(|c| c.is_lowercase()) {
- let uc: String = NonSnakeCase::to_snake_case(&s).chars()
- .map(|c| c.to_uppercase()).collect();
- if uc != &s[..] {
- cx.span_lint(NON_UPPER_CASE_GLOBALS, span,
- &format!("{} `{}` should have an upper case name such as `{}`",
- sort, s, uc));
- } else {
- cx.span_lint(NON_UPPER_CASE_GLOBALS, span,
- &format!("{} `{}` should have an upper case name",
- sort, s));
- }
- }
- }
-}
-
-impl LintPass for NonUpperCaseGlobals {
- fn get_lints(&self) -> LintArray {
- lint_array!(NON_UPPER_CASE_GLOBALS)
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- match it.node {
- // only check static constants
- ast::ItemStatic(_, ast::MutImmutable, _) => {
- NonUpperCaseGlobals::check_upper_case(cx, "static constant", it.ident, it.span);
- }
- ast::ItemConst(..) => {
- NonUpperCaseGlobals::check_upper_case(cx, "constant", it.ident, it.span);
- }
- _ => {}
- }
- }
-
- fn check_pat(&mut self, cx: &Context, p: &ast::Pat) {
- // Lint for constants that look like binding identifiers (#7526)
- match (&p.node, cx.tcx.def_map.borrow().get(&p.id)) {
- (&ast::PatIdent(_, ref path1, _), Some(&def::DefConst(..))) => {
- NonUpperCaseGlobals::check_upper_case(cx, "constant in pattern",
- path1.node, p.span);
- }
- _ => {}
- }
- }
-}
-
-declare_lint! {
- UNUSED_PARENS,
- Warn,
- "`if`, `match`, `while` and `return` do not need parentheses"
-}
-
-#[derive(Copy)]
-pub struct UnusedParens;
-
-impl UnusedParens {
- fn check_unused_parens_core(&self, cx: &Context, value: &ast::Expr, msg: &str,
- struct_lit_needs_parens: bool) {
- if let ast::ExprParen(ref inner) = value.node {
- let necessary = struct_lit_needs_parens && contains_exterior_struct_lit(&**inner);
- if !necessary {
- cx.span_lint(UNUSED_PARENS, value.span,
- &format!("unnecessary parentheses around {}",
- msg))
- }
- }
-
- /// Expressions that syntactically contain an "exterior" struct
- /// literal i.e. not surrounded by any parens or other
- /// delimiters, e.g. `X { y: 1 }`, `X { y: 1 }.method()`, `foo
- /// == X { y: 1 }` and `X { y: 1 } == foo` all do, but `(X {
- /// y: 1 }) == foo` does not.
- fn contains_exterior_struct_lit(value: &ast::Expr) -> bool {
- match value.node {
- ast::ExprStruct(..) => true,
-
- ast::ExprAssign(ref lhs, ref rhs) |
- ast::ExprAssignOp(_, ref lhs, ref rhs) |
- ast::ExprBinary(_, ref lhs, ref rhs) => {
- // X { y: 1 } + X { y: 2 }
- contains_exterior_struct_lit(&**lhs) ||
- contains_exterior_struct_lit(&**rhs)
- }
- ast::ExprUnary(_, ref x) |
- ast::ExprCast(ref x, _) |
- ast::ExprField(ref x, _) |
- ast::ExprTupField(ref x, _) |
- ast::ExprIndex(ref x, _) => {
- // &X { y: 1 }, X { y: 1 }.y
- contains_exterior_struct_lit(&**x)
- }
-
- ast::ExprMethodCall(_, _, ref exprs) => {
- // X { y: 1 }.bar(...)
- contains_exterior_struct_lit(&*exprs[0])
- }
-
- _ => false
- }
- }
- }
-}
-
-impl LintPass for UnusedParens {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_PARENS)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- let (value, msg, struct_lit_needs_parens) = match e.node {
- ast::ExprIf(ref cond, _, _) => (cond, "`if` condition", true),
- ast::ExprWhile(ref cond, _, _) => (cond, "`while` condition", true),
- ast::ExprMatch(ref head, _, source) => match source {
- ast::MatchSource::Normal => (head, "`match` head expression", true),
- ast::MatchSource::IfLetDesugar { .. } => (head, "`if let` head expression", true),
- ast::MatchSource::WhileLetDesugar => (head, "`while let` head expression", true),
- ast::MatchSource::ForLoopDesugar => (head, "`for` head expression", true),
- },
- ast::ExprRet(Some(ref value)) => (value, "`return` value", false),
- ast::ExprAssign(_, ref value) => (value, "assigned value", false),
- ast::ExprAssignOp(_, _, ref value) => (value, "assigned value", false),
- _ => return
- };
- self.check_unused_parens_core(cx, &**value, msg, struct_lit_needs_parens);
- }
-
- fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
- let (value, msg) = match s.node {
- ast::StmtDecl(ref decl, _) => match decl.node {
- ast::DeclLocal(ref local) => match local.init {
- Some(ref value) => (value, "assigned value"),
- None => return
- },
- _ => return
- },
- _ => return
- };
- self.check_unused_parens_core(cx, &**value, msg, false);
- }
-}
-
-declare_lint! {
- UNUSED_IMPORT_BRACES,
- Allow,
- "unnecessary braces around an imported item"
-}
-
-#[derive(Copy)]
-pub struct UnusedImportBraces;
-
-impl LintPass for UnusedImportBraces {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_IMPORT_BRACES)
- }
-
- fn check_item(&mut self, cx: &Context, item: &ast::Item) {
- match item.node {
- ast::ItemUse(ref view_path) => {
- match view_path.node {
- ast::ViewPathList(_, ref items) => {
- if items.len() == 1 {
- match items[0].node {
- ast::PathListIdent {ref name, ..} => {
- let m = format!("braces around {} is unnecessary",
- &token::get_ident(*name));
- cx.span_lint(UNUSED_IMPORT_BRACES, item.span,
- &m[..]);
- },
- _ => ()
- }
- }
- }
- _ => ()
- }
- },
- _ => ()
- }
- }
-}
-
-declare_lint! {
- NON_SHORTHAND_FIELD_PATTERNS,
- Warn,
- "using `Struct { x: x }` instead of `Struct { x }`"
-}
-
-#[derive(Copy)]
-pub struct NonShorthandFieldPatterns;
-
-impl LintPass for NonShorthandFieldPatterns {
- fn get_lints(&self) -> LintArray {
- lint_array!(NON_SHORTHAND_FIELD_PATTERNS)
- }
-
- fn check_pat(&mut self, cx: &Context, pat: &ast::Pat) {
- let def_map = cx.tcx.def_map.borrow();
- if let ast::PatStruct(_, ref v, _) = pat.node {
- for fieldpat in v.iter()
- .filter(|fieldpat| !fieldpat.node.is_shorthand)
- .filter(|fieldpat| def_map.get(&fieldpat.node.pat.id)
- == Some(&def::DefLocal(fieldpat.node.pat.id))) {
- if let ast::PatIdent(_, ident, None) = fieldpat.node.pat.node {
- if ident.node.as_str() == fieldpat.node.ident.as_str() {
- cx.span_lint(NON_SHORTHAND_FIELD_PATTERNS, fieldpat.span,
- &format!("the `{}:` in this pattern is redundant and can \
- be removed", ident.node.as_str()))
- }
- }
- }
- }
- }
-}
-
-declare_lint! {
- pub UNUSED_UNSAFE,
- Warn,
- "unnecessary use of an `unsafe` block"
-}
-
-#[derive(Copy)]
-pub struct UnusedUnsafe;
-
-impl LintPass for UnusedUnsafe {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_UNSAFE)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- if let ast::ExprBlock(ref blk) = e.node {
- // Don't warn about generated blocks, that'll just pollute the output.
- if blk.rules == ast::UnsafeBlock(ast::UserProvided) &&
- !cx.tcx.used_unsafe.borrow().contains(&blk.id) {
- cx.span_lint(UNUSED_UNSAFE, blk.span, "unnecessary `unsafe` block");
- }
- }
- }
-}
-
-declare_lint! {
- UNSAFE_CODE,
- Allow,
- "usage of `unsafe` code"
-}
-
-#[derive(Copy)]
-pub struct UnsafeCode;
-
-impl LintPass for UnsafeCode {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNSAFE_CODE)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- if let ast::ExprBlock(ref blk) = e.node {
- // Don't warn about generated blocks, that'll just pollute the output.
- if blk.rules == ast::UnsafeBlock(ast::UserProvided) {
- cx.span_lint(UNSAFE_CODE, blk.span, "usage of an `unsafe` block");
- }
- }
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- use syntax::ast::Unsafety::Unsafe;
-
- fn check_method(cx: &Context, meth: &P<ast::Method>) {
- if let ast::Method_::MethDecl(_, _, _, _, Unsafe, _, _, _) = meth.node {
- cx.span_lint(UNSAFE_CODE, meth.span, "implementation of an `unsafe` method");
- }
- }
-
- match it.node {
- ast::ItemFn(_, Unsafe, _, _, _) =>
- cx.span_lint(UNSAFE_CODE, it.span, "declaration of an `unsafe` function"),
-
- ast::ItemTrait(trait_safety, _, _, ref items) => {
- if trait_safety == Unsafe {
- cx.span_lint(UNSAFE_CODE, it.span, "declaration of an `unsafe` trait");
- }
-
- for it in items {
- match *it {
- ast::RequiredMethod(ast::TypeMethod { unsafety: Unsafe, span, ..}) =>
- cx.span_lint(UNSAFE_CODE, span, "declaration of an `unsafe` method"),
- ast::ProvidedMethod(ref meth) => check_method(cx, meth),
- _ => (),
- }
- }
- },
-
- ast::ItemImpl(impl_safety, _, _, _, _, ref impls) => {
- if impl_safety == Unsafe {
- cx.span_lint(UNSAFE_CODE, it.span, "implementation of an `unsafe` trait");
- }
-
- for item in impls {
- if let ast::ImplItem::MethodImplItem(ref meth) = *item {
- check_method(cx, meth);
- }
- }
- },
-
- _ => return,
- }
- }
-}
-
-declare_lint! {
- pub UNUSED_MUT,
- Warn,
- "detect mut variables which don't need to be mutable"
-}
-
-#[derive(Copy)]
-pub struct UnusedMut;
-
-impl UnusedMut {
- fn check_unused_mut_pat(&self, cx: &Context, pats: &[P<ast::Pat>]) {
- // collect all mutable pattern and group their NodeIDs by their Identifier to
- // avoid false warnings in match arms with multiple patterns
-
- let mut mutables = FnvHashMap();
- for p in pats {
- pat_util::pat_bindings(&cx.tcx.def_map, &**p, |mode, id, _, path1| {
- let ident = path1.node;
- if let ast::BindByValue(ast::MutMutable) = mode {
- if !token::get_ident(ident).starts_with("_") {
- match mutables.entry(ident.name.usize()) {
- Vacant(entry) => { entry.insert(vec![id]); },
- Occupied(mut entry) => { entry.get_mut().push(id); },
- }
- }
- }
- });
- }
-
- let used_mutables = cx.tcx.used_mut_nodes.borrow();
- for (_, v) in &mutables {
- if !v.iter().any(|e| used_mutables.contains(e)) {
- cx.span_lint(UNUSED_MUT, cx.tcx.map.span(v[0]),
- "variable does not need to be mutable");
- }
- }
- }
-}
-
-impl LintPass for UnusedMut {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_MUT)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- if let ast::ExprMatch(_, ref arms, _) = e.node {
- for a in arms {
- self.check_unused_mut_pat(cx, &a.pats)
- }
- }
- }
-
- fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
- if let ast::StmtDecl(ref d, _) = s.node {
- if let ast::DeclLocal(ref l) = d.node {
- self.check_unused_mut_pat(cx, slice::ref_slice(&l.pat));
- }
- }
- }
-
- fn check_fn(&mut self, cx: &Context,
- _: visit::FnKind, decl: &ast::FnDecl,
- _: &ast::Block, _: Span, _: ast::NodeId) {
- for a in &decl.inputs {
- self.check_unused_mut_pat(cx, slice::ref_slice(&a.pat));
- }
- }
-}
-
-declare_lint! {
- UNUSED_ALLOCATION,
- Warn,
- "detects unnecessary allocations that can be eliminated"
-}
-
-#[derive(Copy)]
-pub struct UnusedAllocation;
-
-impl LintPass for UnusedAllocation {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNUSED_ALLOCATION)
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- match e.node {
- ast::ExprUnary(ast::UnUniq, _) => (),
- _ => return
- }
-
- if let Some(adjustment) = cx.tcx.adjustments.borrow().get(&e.id) {
- if let ty::AdjustDerefRef(ty::AutoDerefRef { ref autoref, .. }) = *adjustment {
- match autoref {
- &Some(ty::AutoPtr(_, ast::MutImmutable, None)) => {
- cx.span_lint(UNUSED_ALLOCATION, e.span,
- "unnecessary allocation, use & instead");
- }
- &Some(ty::AutoPtr(_, ast::MutMutable, None)) => {
- cx.span_lint(UNUSED_ALLOCATION, e.span,
- "unnecessary allocation, use &mut instead");
- }
- _ => ()
- }
- }
- }
- }
-}
-
-declare_lint! {
- MISSING_DOCS,
- Allow,
- "detects missing documentation for public members"
-}
-
-pub struct MissingDoc {
- /// Stack of IDs of struct definitions.
- struct_def_stack: Vec<ast::NodeId>,
-
- /// True if inside variant definition
- in_variant: bool,
-
- /// Stack of whether #[doc(hidden)] is set
- /// at each level which has lint attributes.
- doc_hidden_stack: Vec<bool>,
-}
-
-impl MissingDoc {
- pub fn new() -> MissingDoc {
- MissingDoc {
- struct_def_stack: vec!(),
- in_variant: false,
- doc_hidden_stack: vec!(false),
- }
- }
-
- fn doc_hidden(&self) -> bool {
- *self.doc_hidden_stack.last().expect("empty doc_hidden_stack")
- }
-
- fn check_missing_docs_attrs(&self,
- cx: &Context,
- id: Option<ast::NodeId>,
- attrs: &[ast::Attribute],
- sp: Span,
- desc: &'static str) {
- // If we're building a test harness, then warning about
- // documentation is probably not really relevant right now.
- if cx.sess().opts.test { return }
-
- // `#[doc(hidden)]` disables missing_docs check.
- if self.doc_hidden() { return }
-
- // Only check publicly-visible items, using the result from the privacy pass.
- // It's an option so the crate root can also use this function (it doesn't
- // have a NodeId).
- if let Some(ref id) = id {
- if !cx.exported_items.contains(id) {
- return;
- }
- }
-
- let has_doc = attrs.iter().any(|a| {
- match a.node.value.node {
- ast::MetaNameValue(ref name, _) if *name == "doc" => true,
- _ => false
- }
- });
- if !has_doc {
- cx.span_lint(MISSING_DOCS, sp,
- &format!("missing documentation for {}", desc));
- }
- }
-}
-
-impl LintPass for MissingDoc {
- fn get_lints(&self) -> LintArray {
- lint_array!(MISSING_DOCS)
- }
-
- fn enter_lint_attrs(&mut self, _: &Context, attrs: &[ast::Attribute]) {
- let doc_hidden = self.doc_hidden() || attrs.iter().any(|attr| {
- attr.check_name("doc") && match attr.meta_item_list() {
- None => false,
- Some(l) => attr::contains_name(&l[..], "hidden"),
- }
- });
- self.doc_hidden_stack.push(doc_hidden);
- }
-
- fn exit_lint_attrs(&mut self, _: &Context, _: &[ast::Attribute]) {
- self.doc_hidden_stack.pop().expect("empty doc_hidden_stack");
- }
-
- fn check_struct_def(&mut self, _: &Context,
- _: &ast::StructDef, _: ast::Ident, _: &ast::Generics, id: ast::NodeId) {
- self.struct_def_stack.push(id);
- }
-
- fn check_struct_def_post(&mut self, _: &Context,
- _: &ast::StructDef, _: ast::Ident, _: &ast::Generics, id: ast::NodeId) {
- let popped = self.struct_def_stack.pop().expect("empty struct_def_stack");
- assert!(popped == id);
- }
-
- fn check_crate(&mut self, cx: &Context, krate: &ast::Crate) {
- self.check_missing_docs_attrs(cx, None, &krate.attrs,
- krate.span, "crate");
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- let desc = match it.node {
- ast::ItemFn(..) => "a function",
- ast::ItemMod(..) => "a module",
- ast::ItemEnum(..) => "an enum",
- ast::ItemStruct(..) => "a struct",
- ast::ItemTrait(..) => "a trait",
- ast::ItemTy(..) => "a type alias",
- _ => return
- };
- self.check_missing_docs_attrs(cx, Some(it.id), &it.attrs,
- it.span, desc);
- }
-
- fn check_fn(&mut self, cx: &Context,
- fk: visit::FnKind, _: &ast::FnDecl,
- _: &ast::Block, _: Span, _: ast::NodeId) {
- if let visit::FkMethod(_, _, m) = fk {
- // If the method is an impl for a trait, don't doc.
- if method_context(cx, m) == TraitImpl { return; }
-
- // Otherwise, doc according to privacy. This will also check
- // doc for default methods defined on traits.
- self.check_missing_docs_attrs(cx, Some(m.id), &m.attrs,
- m.span, "a method");
- }
- }
-
- fn check_ty_method(&mut self, cx: &Context, tm: &ast::TypeMethod) {
- self.check_missing_docs_attrs(cx, Some(tm.id), &tm.attrs,
- tm.span, "a type method");
- }
-
- fn check_trait_method(&mut self, cx: &Context, it: &ast::TraitItem) {
- if let ast::TraitItem::TypeTraitItem(ref ty) = *it {
- let assoc_ty = &ty.ty_param;
- self.check_missing_docs_attrs(cx, Some(assoc_ty.id), &ty.attrs,
- assoc_ty.span, "an associated type");
- }
- }
-
- fn check_struct_field(&mut self, cx: &Context, sf: &ast::StructField) {
- if let ast::NamedField(_, vis) = sf.node.kind {
- if vis == ast::Public || self.in_variant {
- let cur_struct_def = *self.struct_def_stack.last()
- .expect("empty struct_def_stack");
- self.check_missing_docs_attrs(cx, Some(cur_struct_def),
- &sf.node.attrs, sf.span,
- "a struct field")
- }
- }
- }
-
- fn check_variant(&mut self, cx: &Context, v: &ast::Variant, _: &ast::Generics) {
- self.check_missing_docs_attrs(cx, Some(v.node.id), &v.node.attrs,
- v.span, "a variant");
- assert!(!self.in_variant);
- self.in_variant = true;
- }
-
- fn check_variant_post(&mut self, _: &Context, _: &ast::Variant, _: &ast::Generics) {
- assert!(self.in_variant);
- self.in_variant = false;
- }
-}
-
-#[derive(Copy)]
-pub struct MissingCopyImplementations;
-
-impl LintPass for MissingCopyImplementations {
- fn get_lints(&self) -> LintArray {
- lint_array!(MISSING_COPY_IMPLEMENTATIONS)
- }
-
- fn check_item(&mut self, cx: &Context, item: &ast::Item) {
- if !cx.exported_items.contains(&item.id) {
- return
- }
- if cx.tcx
- .destructor_for_type
- .borrow()
- .contains_key(&ast_util::local_def(item.id)) {
- return
- }
- let ty = match item.node {
- ast::ItemStruct(_, ref ast_generics) => {
- if ast_generics.is_parameterized() {
- return
- }
- ty::mk_struct(cx.tcx,
- ast_util::local_def(item.id),
- cx.tcx.mk_substs(Substs::empty()))
- }
- ast::ItemEnum(_, ref ast_generics) => {
- if ast_generics.is_parameterized() {
- return
- }
- ty::mk_enum(cx.tcx,
- ast_util::local_def(item.id),
- cx.tcx.mk_substs(Substs::empty()))
- }
- _ => return,
- };
- let parameter_environment = ty::empty_parameter_environment(cx.tcx);
- if !ty::type_moves_by_default(¶meter_environment, item.span, ty) {
- return
- }
- if ty::can_type_implement_copy(¶meter_environment, item.span, ty).is_ok() {
- cx.span_lint(MISSING_COPY_IMPLEMENTATIONS,
- item.span,
- "type could implement `Copy`; consider adding `impl \
- Copy`")
- }
- }
-}
-
-declare_lint! {
- MISSING_DEBUG_IMPLEMENTATIONS,
- Allow,
- "detects missing implementations of fmt::Debug"
-}
-
-pub struct MissingDebugImplementations {
- impling_types: Option<NodeSet>,
-}
-
-impl MissingDebugImplementations {
- pub fn new() -> MissingDebugImplementations {
- MissingDebugImplementations {
- impling_types: None,
- }
- }
-}
-
-impl LintPass for MissingDebugImplementations {
- fn get_lints(&self) -> LintArray {
- lint_array!(MISSING_DEBUG_IMPLEMENTATIONS)
- }
-
- fn check_item(&mut self, cx: &Context, item: &ast::Item) {
- if !cx.exported_items.contains(&item.id) {
- return;
- }
-
- match item.node {
- ast::ItemStruct(..) | ast::ItemEnum(..) => {},
- _ => return,
- }
-
- let debug = match cx.tcx.lang_items.debug_trait() {
- Some(debug) => debug,
- None => return,
- };
-
- if self.impling_types.is_none() {
- let impls = cx.tcx.trait_impls.borrow();
- let impls = match impls.get(&debug) {
- Some(impls) => {
- impls.borrow().iter()
- .filter(|d| d.krate == ast::LOCAL_CRATE)
- .filter_map(|d| ty::ty_to_def_id(ty::node_id_to_type(cx.tcx, d.node)))
- .map(|d| d.node)
- .collect()
- }
- None => NodeSet(),
- };
- self.impling_types = Some(impls);
- debug!("{:?}", self.impling_types);
- }
-
- if !self.impling_types.as_ref().unwrap().contains(&item.id) {
- cx.span_lint(MISSING_DEBUG_IMPLEMENTATIONS,
- item.span,
- "type does not implement `fmt::Debug`; consider adding #[derive(Debug)] \
- or a manual implementation")
- }
- }
-}
-
-declare_lint! {
- DEPRECATED,
- Warn,
- "detects use of #[deprecated] items"
-}
-
-/// Checks for use of items with `#[deprecated]` attributes
-#[derive(Copy)]
-pub struct Stability;
-
-impl Stability {
- fn lint(&self, cx: &Context, _id: ast::DefId, span: Span, stability: &Option<attr::Stability>) {
-
- // deprecated attributes apply in-crate and cross-crate
- let (lint, label) = match *stability {
- Some(attr::Stability { deprecated_since: Some(_), .. }) =>
- (DEPRECATED, "deprecated"),
- _ => return
- };
-
- output(cx, span, stability, lint, label);
-
- fn output(cx: &Context, span: Span, stability: &Option<attr::Stability>,
- lint: &'static Lint, label: &'static str) {
- let msg = match *stability {
- Some(attr::Stability { reason: Some(ref s), .. }) => {
- format!("use of {} item: {}", label, *s)
- }
- _ => format!("use of {} item", label)
- };
-
- cx.span_lint(lint, span, &msg[..]);
- }
- }
-}
-
-impl LintPass for Stability {
- fn get_lints(&self) -> LintArray {
- lint_array!(DEPRECATED)
- }
-
- fn check_item(&mut self, cx: &Context, item: &ast::Item) {
- stability::check_item(cx.tcx, item, false,
- &mut |id, sp, stab| self.lint(cx, id, sp, stab));
- }
-
- fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
- stability::check_expr(cx.tcx, e,
- &mut |id, sp, stab| self.lint(cx, id, sp, stab));
- }
-
- fn check_path(&mut self, cx: &Context, path: &ast::Path, id: ast::NodeId) {
- stability::check_path(cx.tcx, path, id,
- &mut |id, sp, stab| self.lint(cx, id, sp, stab));
- }
-}
-
-declare_lint! {
- pub UNCONDITIONAL_RECURSION,
- Warn,
- "functions that cannot return without calling themselves"
-}
-
-#[derive(Copy)]
-pub struct UnconditionalRecursion;
-
-
-impl LintPass for UnconditionalRecursion {
- fn get_lints(&self) -> LintArray {
- lint_array![UNCONDITIONAL_RECURSION]
- }
-
- fn check_fn(&mut self, cx: &Context, fn_kind: visit::FnKind, _: &ast::FnDecl,
- blk: &ast::Block, sp: Span, id: ast::NodeId) {
- type F = for<'tcx> fn(&ty::ctxt<'tcx>,
- ast::NodeId, ast::NodeId, ast::Ident, ast::NodeId) -> bool;
-
- let (name, checker) = match fn_kind {
- visit::FkItemFn(name, _, _, _) => (name, id_refers_to_this_fn as F),
- visit::FkMethod(name, _, _) => (name, id_refers_to_this_method as F),
- // closures can't recur, so they don't matter.
- visit::FkFnBlock => return
- };
-
- let impl_def_id = ty::impl_of_method(cx.tcx, ast_util::local_def(id))
- .unwrap_or(ast_util::local_def(ast::DUMMY_NODE_ID));
- assert!(ast_util::is_local(impl_def_id));
- let impl_node_id = impl_def_id.node;
-
- // Walk through this function (say `f`) looking to see if
- // every possible path references itself, i.e. the function is
- // called recursively unconditionally. This is done by trying
- // to find a path from the entry node to the exit node that
- // *doesn't* call `f` by traversing from the entry while
- // pretending that calls of `f` are sinks (i.e. ignoring any
- // exit edges from them).
- //
- // NB. this has an edge case with non-returning statements,
- // like `loop {}` or `panic!()`: control flow never reaches
- // the exit node through these, so one can have a function
- // that never actually calls itselfs but is still picked up by
- // this lint:
- //
- // fn f(cond: bool) {
- // if !cond { panic!() } // could come from `assert!(cond)`
- // f(false)
- // }
- //
- // In general, functions of that form may be able to call
- // itself a finite number of times and then diverge. The lint
- // considers this to be an error for two reasons, (a) it is
- // easier to implement, and (b) it seems rare to actually want
- // to have behaviour like the above, rather than
- // e.g. accidentally recurring after an assert.
-
- let cfg = cfg::CFG::new(cx.tcx, blk);
+//! These are the built-in lints that are emitted direct in the main
+//! compiler code, rather than using their own custom pass. Those
+//! lints are all available in `rustc_lint::builtin`.
- let mut work_queue = vec![cfg.entry];
- let mut reached_exit_without_self_call = false;
- let mut self_call_spans = vec![];
- let mut visited = BitSet::new();
-
- while let Some(idx) = work_queue.pop() {
- let cfg_id = idx.node_id();
- if idx == cfg.exit {
- // found a path!
- reached_exit_without_self_call = true;
- break
- } else if visited.contains(&cfg_id) {
- // already done
- continue
- }
- visited.insert(cfg_id);
- let node_id = cfg.graph.node_data(idx).id();
-
- // is this a recursive call?
- if node_id != ast::DUMMY_NODE_ID && checker(cx.tcx, impl_node_id, id, name, node_id) {
-
- self_call_spans.push(cx.tcx.map.span(node_id));
- // this is a self call, so we shouldn't explore past
- // this node in the CFG.
- continue
- }
- // add the successors of this node to explore the graph further.
- cfg.graph.each_outgoing_edge(idx, |_, edge| {
- let target_idx = edge.target();
- let target_cfg_id = target_idx.node_id();
- if !visited.contains(&target_cfg_id) {
- work_queue.push(target_idx)
- }
- true
- });
- }
-
- // check the number of sell calls because a function that
- // doesn't return (e.g. calls a `-> !` function or `loop { /*
- // no break */ }`) shouldn't be linted unless it actually
- // recurs.
- if !reached_exit_without_self_call && self_call_spans.len() > 0 {
- cx.span_lint(UNCONDITIONAL_RECURSION, sp,
- "function cannot return without recurring");
-
- // FIXME #19668: these could be span_lint_note's instead of this manual guard.
- if cx.current_level(UNCONDITIONAL_RECURSION) != Level::Allow {
- let sess = cx.sess();
- // offer some help to the programmer.
- for call in &self_call_spans {
- sess.span_note(*call, "recursive call site")
- }
- sess.span_help(sp, "a `loop` may express intention better if this is on purpose")
- }
- }
-
- // all done
- return;
-
- // Functions for identifying if the given NodeId `id`
- // represents a call to the function `fn_id`/method
- // `method_id`.
-
- fn id_refers_to_this_fn<'tcx>(tcx: &ty::ctxt<'tcx>,
- _: ast::NodeId,
- fn_id: ast::NodeId,
- _: ast::Ident,
- id: ast::NodeId) -> bool {
- tcx.def_map.borrow().get(&id)
- .map_or(false, |def| {
- let did = def.def_id();
- ast_util::is_local(did) && did.node == fn_id
- })
- }
-
- // check if the method call `id` refers to method `method_id`
- // (with name `method_name` contained in impl `impl_id`).
- fn id_refers_to_this_method<'tcx>(tcx: &ty::ctxt<'tcx>,
- impl_id: ast::NodeId,
- method_id: ast::NodeId,
- method_name: ast::Ident,
- id: ast::NodeId) -> bool {
- let did = match tcx.method_map.borrow().get(&ty::MethodCall::expr(id)) {
- None => return false,
- Some(m) => match m.origin {
- // There's no way to know if a method call via a
- // vtable is recursion, so we assume it's not.
- ty::MethodTraitObject(_) => return false,
-
- // This `did` refers directly to the method definition.
- ty::MethodStatic(did) | ty::MethodStaticClosure(did) => did,
-
- // MethodTypeParam are methods from traits:
-
- // The `impl ... for ...` of this method call
- // isn't known, e.g. it might be a default method
- // in a trait, so we get the def-id of the trait
- // method instead.
- ty::MethodTypeParam(
- ty::MethodParam { ref trait_ref, method_num, impl_def_id: None, }) => {
- ty::trait_item(tcx, trait_ref.def_id, method_num).def_id()
- }
-
- // The `impl` is known, so we check that with a
- // special case:
- ty::MethodTypeParam(
- ty::MethodParam { impl_def_id: Some(impl_def_id), .. }) => {
-
- let name = match tcx.map.expect_expr(id).node {
- ast::ExprMethodCall(ref sp_ident, _, _) => sp_ident.node,
- _ => tcx.sess.span_bug(
- tcx.map.span(id),
- "non-method call expr behaving like a method call?")
- };
- // it matches if it comes from the same impl,
- // and has the same method name.
- return ast_util::is_local(impl_def_id)
- && impl_def_id.node == impl_id
- && method_name.name == name.name
- }
- }
- };
-
- ast_util::is_local(did) && did.node == method_id
- }
- }
-}
-
-declare_lint! {
- PLUGIN_AS_LIBRARY,
- Warn,
- "compiler plugin used as ordinary library in non-plugin crate"
-}
-
-#[derive(Copy)]
-pub struct PluginAsLibrary;
-
-impl LintPass for PluginAsLibrary {
- fn get_lints(&self) -> LintArray {
- lint_array![PLUGIN_AS_LIBRARY]
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- if cx.sess().plugin_registrar_fn.get().is_some() {
- // We're compiling a plugin; it's fine to link other plugins.
- return;
- }
-
- match it.node {
- ast::ItemExternCrate(..) => (),
- _ => return,
- };
-
- let md = match cx.sess().cstore.find_extern_mod_stmt_cnum(it.id) {
- Some(cnum) => cx.sess().cstore.get_crate_data(cnum),
- None => {
- // Probably means we aren't linking the crate for some reason.
- //
- // Not sure if / when this could happen.
- return;
- }
- };
-
- if decoder::get_plugin_registrar_fn(md.data()).is_some() {
- cx.span_lint(PLUGIN_AS_LIBRARY, it.span,
- "compiler plugin used as an ordinary library");
- }
- }
-}
+use lint::{LintPass, LintArray};
declare_lint! {
pub UNUSED_IMPORTS,
"detects transmutes of fat pointers"
}
-declare_lint! {
- pub MISSING_COPY_IMPLEMENTATIONS,
- Allow,
- "detects potentially-forgotten implementations of `Copy`"
-}
-
/// Does nothing as a lint pass, but registers some `Lint`s
/// which are used by other parts of the compiler.
#[derive(Copy)]
)
}
}
-
-declare_lint! {
- PRIVATE_NO_MANGLE_FNS,
- Warn,
- "functions marked #[no_mangle] should be exported"
-}
-
-declare_lint! {
- PRIVATE_NO_MANGLE_STATICS,
- Warn,
- "statics marked #[no_mangle] should be exported"
-}
-
-declare_lint! {
- NO_MANGLE_CONST_ITEMS,
- Deny,
- "const items will not have their symbols exported"
-}
-
-#[derive(Copy)]
-pub struct InvalidNoMangleItems;
-
-impl LintPass for InvalidNoMangleItems {
- fn get_lints(&self) -> LintArray {
- lint_array!(PRIVATE_NO_MANGLE_FNS,
- PRIVATE_NO_MANGLE_STATICS,
- NO_MANGLE_CONST_ITEMS)
- }
-
- fn check_item(&mut self, cx: &Context, it: &ast::Item) {
- match it.node {
- ast::ItemFn(..) => {
- if attr::contains_name(&it.attrs, "no_mangle") &&
- !cx.exported_items.contains(&it.id) {
- let msg = format!("function {} is marked #[no_mangle], but not exported",
- it.ident);
- cx.span_lint(PRIVATE_NO_MANGLE_FNS, it.span, &msg);
- }
- },
- ast::ItemStatic(..) => {
- if attr::contains_name(it.attrs.as_slice(), "no_mangle") &&
- !cx.exported_items.contains(&it.id) {
- let msg = format!("static {} is marked #[no_mangle], but not exported",
- it.ident);
- cx.span_lint(PRIVATE_NO_MANGLE_STATICS, it.span, msg.as_slice());
- }
- },
- ast::ItemConst(..) => {
- if attr::contains_name(it.attrs.as_slice(), "no_mangle") {
- // Const items do not refer to a particular location in memory, and therefore
- // don't have anything to attach a symbol to
- let msg = "const items should never be #[no_mangle], consider instead using \
- `pub static`";
- cx.span_lint(NO_MANGLE_CONST_ITEMS, it.span, msg);
- }
- }
- _ => {},
- }
- }
-}
-
-/// Forbids using the `#[feature(...)]` attribute
-#[derive(Copy)]
-pub struct UnstableFeatures;
-
-declare_lint!(UNSTABLE_FEATURES, Allow,
- "enabling unstable features");
-
-impl LintPass for UnstableFeatures {
- fn get_lints(&self) -> LintArray {
- lint_array!(UNSTABLE_FEATURES)
- }
- fn check_attribute(&mut self, ctx: &Context, attr: &ast::Attribute) {
- use syntax::attr;
- if attr::contains_name(&[attr.node.value.clone()], "feature") {
- ctx.span_lint(UNSTABLE_FEATURES, attr.span, "unstable feature");
- }
- }
-}
}
}
- fn register_renamed(&mut self, old_name: &str, new_name: &str) {
+ pub fn register_renamed(&mut self, old_name: &str, new_name: &str) {
let target = match self.by_name.get(new_name) {
Some(&Id(lint_id)) => lint_id.clone(),
_ => panic!("invalid lint renaming of {} to {}", old_name, new_name)
self.by_name.insert(old_name.to_string(), Renamed(new_name.to_string(), target));
}
- pub fn register_builtin(&mut self, sess: Option<&Session>) {
- macro_rules! add_builtin {
- ($sess:ident, $($name:ident),*,) => (
- {$(
- self.register_pass($sess, false, box builtin::$name as LintPassObject);
- )*}
- )
- }
-
- macro_rules! add_builtin_with_new {
- ($sess:ident, $($name:ident),*,) => (
- {$(
- self.register_pass($sess, false, box builtin::$name::new() as LintPassObject);
- )*}
- )
- }
-
- macro_rules! add_lint_group {
- ($sess:ident, $name:expr, $($lint:ident),*) => (
- self.register_group($sess, false, $name, vec![$(LintId::of(builtin::$lint)),*]);
- )
- }
-
- add_builtin!(sess,
- HardwiredLints,
- WhileTrue,
- UnusedCasts,
- ImproperCTypes,
- BoxPointers,
- UnusedAttributes,
- PathStatements,
- UnusedResults,
- NonCamelCaseTypes,
- NonSnakeCase,
- NonUpperCaseGlobals,
- UnusedParens,
- UnusedImportBraces,
- NonShorthandFieldPatterns,
- UnusedUnsafe,
- UnsafeCode,
- UnusedMut,
- UnusedAllocation,
- MissingCopyImplementations,
- UnstableFeatures,
- Stability,
- UnconditionalRecursion,
- InvalidNoMangleItems,
- PluginAsLibrary,
- );
-
- add_builtin_with_new!(sess,
- TypeLimits,
- RawPointerDerive,
- MissingDoc,
- MissingDebugImplementations,
- );
-
- add_lint_group!(sess, "bad_style",
- NON_CAMEL_CASE_TYPES, NON_SNAKE_CASE, NON_UPPER_CASE_GLOBALS);
-
- add_lint_group!(sess, "unused",
- UNUSED_IMPORTS, UNUSED_VARIABLES, UNUSED_ASSIGNMENTS, DEAD_CODE,
- UNUSED_MUT, UNREACHABLE_CODE, UNUSED_MUST_USE,
- UNUSED_UNSAFE, PATH_STATEMENTS);
-
- // We have one lint pass defined in this module.
- self.register_pass(sess, false, box GatherNodeLevels as LintPassObject);
-
- // Insert temporary renamings for a one-time deprecation
- self.register_renamed("raw_pointer_deriving", "raw_pointer_derive");
-
- self.register_renamed("unknown_features", "unused_features");
- }
-
#[allow(unused_variables)]
fn find_lint(&self, lint_name: &str, sess: &Session, span: Option<Span>)
-> Option<LintId>
// nodes, so that the variant size difference check in trans can call
// `raw_emit_lint`.
-struct GatherNodeLevels;
+pub struct GatherNodeLevels;
impl LintPass for GatherNodeLevels {
fn get_lints(&self) -> LintArray {
use syntax::visit::FnKind;
use syntax::ast;
-pub use lint::context::{Context, LintStore, raw_emit_lint, check_crate, gather_attrs};
+pub use lint::context::{Context, LintStore, raw_emit_lint, check_crate, gather_attrs,
+ GatherNodeLevels};
/// Specification of a single lint.
#[derive(Copy, Debug)]
def.node)
}
-pub fn get_trait_item_name_and_kind(cstore: &cstore::CStore, def: ast::DefId)
- -> (ast::Name, def::TraitItemKind) {
+pub fn is_static_method(cstore: &cstore::CStore, def: ast::DefId) -> bool {
let cdata = cstore.get_crate_data(def.krate);
- decoder::get_trait_item_name_and_kind(cstore.intr.clone(),
- &*cdata,
- def.node)
+ decoder::is_static_method(&*cdata, def.node)
}
pub fn get_trait_item_def_ids(cstore: &cstore::CStore, def: ast::DefId)
StaticMethod, // F
Method, // h
Type, // y
- ForeignType, // T
Mod, // m
ForeignMod, // n
Enum, // t
'F' => StaticMethod,
'h' => Method,
'y' => Type,
- 'T' => ForeignType,
'm' => Mod,
'n' => ForeignMod,
't' => Enum,
}
}
-fn item_sort(item: rbml::Doc) -> char {
+fn item_sort(item: rbml::Doc) -> Option<char> {
let mut ret = None;
reader::tagged_docs(item, tag_item_trait_item_sort, |doc| {
ret = Some(doc.as_str_slice().as_bytes()[0] as char);
false
});
- match ret {
- Some(r) => r,
- None => panic!("No item_sort found")
- }
+ ret
}
fn item_symbol(item: rbml::Doc) -> String {
def::FromImpl(item_reqd_and_translated_parent_item(cnum,
item))
};
- match fam {
- // We don't bother to get encode/decode the trait id, we don't need it.
- Method => DlDef(def::DefMethod(did, None, provenance)),
- StaticMethod => DlDef(def::DefStaticMethod(did, provenance)),
- _ => panic!()
+ DlDef(def::DefMethod(did, provenance))
+ }
+ Type => {
+ if item_sort(item) == Some('t') {
+ let trait_did = item_reqd_and_translated_parent_item(cnum, item);
+ DlDef(def::DefAssociatedTy(trait_did, did))
+ } else {
+ DlDef(def::DefTy(did, false))
}
}
- Type | ForeignType => DlDef(def::DefTy(did, false)),
Mod => DlDef(def::DefMod(did)),
ForeignMod => DlDef(def::DefForeignMod(did)),
StructVariant => {
let enum_did = item_reqd_and_translated_parent_item(cnum, item);
DlDef(def::DefVariant(enum_did, did, false))
}
- Trait => DlDef(def::DefaultImpl(did)),
+ Trait => DlDef(def::DefTrait(did)),
Enum => DlDef(def::DefTy(did, true)),
Impl | DefaultImpl => DlImpl(did),
PublicField | InheritedField => DlField,
tag_item_impl_item, |doc| {
let def_id = item_def_id(doc, cdata);
match item_sort(doc) {
- 'r' | 'p' => impl_items.push(ty::MethodTraitItemId(def_id)),
- 't' => impl_items.push(ty::TypeTraitItemId(def_id)),
+ Some('r') | Some('p') => {
+ impl_items.push(ty::MethodTraitItemId(def_id))
+ }
+ Some('t') => impl_items.push(ty::TypeTraitItemId(def_id)),
_ => panic!("unknown impl item sort"),
}
true
item_name(&*intr, doc)
}
-pub fn get_trait_item_name_and_kind(intr: Rc<IdentInterner>,
- cdata: Cmd,
- id: ast::NodeId)
- -> (ast::Name, def::TraitItemKind) {
+pub fn is_static_method(cdata: Cmd, id: ast::NodeId) -> bool {
let doc = lookup_item(id, cdata.data());
- let name = item_name(&*intr, doc);
match item_sort(doc) {
- 'r' | 'p' => {
- let explicit_self = get_explicit_self(doc);
- (name, def::TraitItemKind::from_explicit_self_category(explicit_self))
- }
- 't' => (name, def::TypeTraitItemKind),
- c => {
- panic!("get_trait_item_name_and_kind(): unknown trait item kind \
- in metadata: `{}`", c)
+ Some('r') | Some('p') => {
+ get_explicit_self(doc) == ty::StaticExplicitSelfCategory
}
+ _ => false
}
}
let vis = item_visibility(method_doc);
match item_sort(method_doc) {
- 'r' | 'p' => {
+ Some('r') | Some('p') => {
let generics = doc_generics(method_doc, tcx, cdata, tag_method_ty_generics);
let predicates = doc_predicates(method_doc, tcx, cdata, tag_method_ty_generics);
let fty = doc_method_fty(method_doc, tcx, cdata);
container,
provided_source)))
}
- 't' => {
+ Some('t') => {
ty::TypeTraitItem(Rc::new(ty::AssociatedType {
name: name,
vis: vis,
reader::tagged_docs(item, tag_item_trait_item, |mth| {
let def_id = item_def_id(mth, cdata);
match item_sort(mth) {
- 'r' | 'p' => result.push(ty::MethodTraitItemId(def_id)),
- 't' => result.push(ty::TypeTraitItemId(def_id)),
+ Some('r') | Some('p') => {
+ result.push(ty::MethodTraitItemId(def_id));
+ }
+ Some('t') => result.push(ty::TypeTraitItemId(def_id)),
_ => panic!("unknown trait item sort"),
}
true
let did = item_def_id(mth_id, cdata);
let mth = lookup_item(did.node, data);
- if item_sort(mth) == 'p' {
+ if item_sort(mth) == Some('p') {
let trait_item = get_impl_or_trait_item(intr.clone(),
cdata,
did.node,
let items = reader::get_doc(rbml::Doc::new(cdata.data()), tag_items);
match maybe_find_item(id, items) {
None => false,
- Some(item) => item_sort(item) == 't',
+ Some(item) => item_sort(item) == Some('t'),
}
}
None => {}
}
}
- ast::ItemDefaultImpl(unsafety, ref ast_trait_ref) => {
+ ast::ItemDefaultImpl(unsafety, _) => {
add_to_index(item, rbml_w, index);
rbml_w.start_tag(tag_items_data_item);
encode_def_id(rbml_w, def_id);
encode_name(rbml_w, item.ident.name);
encode_unsafety(rbml_w, unsafety);
- let trait_ref = ty::node_id_to_trait_ref(tcx, ast_trait_ref.ref_id);
+ let trait_ref = ty::impl_id_to_trait_ref(tcx, item.id);
encode_trait_ref(rbml_w, ecx, &*trait_ref, tag_item_trait_ref);
rbml_w.end_tag();
}
encode_unsafety(rbml_w, unsafety);
encode_polarity(rbml_w, polarity);
match ty.node {
- ast::TyPath(ref path, _) if path.segments.len() == 1 => {
+ ast::TyPath(None, ref path) if path.segments.len() == 1 => {
let ident = path.segments.last().unwrap().identifier;
encode_impl_type_basename(rbml_w, ident);
}
}
rbml_w.end_tag();
}
- if let Some(ref ast_trait_ref) = *opt_trait {
- let trait_ref = ty::node_id_to_trait_ref(
- tcx, ast_trait_ref.ref_id);
+ if opt_trait.is_some() {
+ let trait_ref = ty::impl_id_to_trait_ref(tcx, item.id);
encode_trait_ref(rbml_w, ecx, &*trait_ref, tag_item_trait_ref);
}
encode_path(rbml_w, path.clone());
impl<'a, 'b, 'c, 'tcx, 'v> Visitor<'v> for ImplVisitor<'a, 'b, 'c, 'tcx> {
fn visit_item(&mut self, item: &ast::Item) {
if let ast::ItemImpl(_, _, _, Some(ref trait_ref), _, _) = item.node {
- let def_map = &self.ecx.tcx.def_map;
- let trait_def = def_map.borrow()[trait_ref.ref_id].clone();
- let def_id = trait_def.def_id();
+ let def_id = self.ecx.tcx.def_map.borrow()[trait_ref.ref_id].def_id();
// Load eagerly if this is an implementation of the Drop trait
// or if the trait is not defined in this crate.
use std::collections::HashSet;
use std::env;
+use std::os;
use std::old_io::fs::PathExtensions;
use std::old_io::fs;
})
}
- match canonicalize(env::current_exe().ok()) {
+ match canonicalize(os::self_exe_name()) {
Some(mut p) => { p.pop(); p.pop(); p }
None => panic!("can't determine value for sysroot")
}
}
None => Vec::new()
};
- let mut cwd = env::current_dir().unwrap();
+ let mut cwd = os::getcwd().unwrap();
// now add in default entries
let cwd_dot_rust = cwd.join(".rust");
if !env_rust_path.contains(&cwd_dot_rust) {
}
cwd.pop();
}
- if let Some(h) = env::home_dir() {
+ if let Some(h) = os::homedir() {
let p = h.join(".rust");
if !env_rust_path.contains(&p) && p.exists() {
env_rust_path.push(p);
}
};
return match ArchiveMetadata::new(archive).map(|ar| MetadataArchive(ar)) {
- None => {
- return Err((format!("failed to read rlib metadata: '{}'",
- filename.display())))
- }
- Some(blob) => return Ok(blob)
- }
+ None => Err(format!("failed to read rlib metadata: '{}'",
+ filename.display())),
+ Some(blob) => Ok(blob)
+ };
}
unsafe {
let buf = CString::new(filename.as_vec()).unwrap();
}
llvm::LLVMMoveToNextSection(si.llsi);
}
- return Err(format!("metadata not found: '{}'", filename.display()));
+ Err(format!("metadata not found: '{}'", filename.display()))
}
}
assert_eq!(next(st), '|');
let index = parse_u32(st);
assert_eq!(next(st), '|');
- let bounds = parse_bounds_(st, conv);
let default = parse_opt(st, |st| parse_ty_(st, conv));
let object_lifetime_default = parse_object_lifetime_default(st, conv);
def_id: def_id,
space: space,
index: index,
- bounds: bounds,
default: default,
object_lifetime_default: object_lifetime_default,
}
{
let builtin_bounds = parse_builtin_bounds_(st, conv);
+ let region_bounds = parse_region_bounds_(st, conv);
+
let mut param_bounds = ty::ParamBounds {
- region_bounds: Vec::new(),
+ region_bounds: region_bounds,
builtin_bounds: builtin_bounds,
trait_bounds: Vec::new(),
projection_bounds: Vec::new(),
};
+
+
loop {
match next(st) {
- 'R' => {
- param_bounds.region_bounds.push(
- parse_region_(st, conv));
- }
'I' => {
param_bounds.trait_bounds.push(
ty::Binder(parse_trait_ref_(st, conv)));
}
}
}
+
+fn parse_region_bounds_<'a, 'tcx, F>(st: &mut PState<'a, 'tcx>, conv: &mut F)
+ -> Vec<ty::Region> where
+ F: FnMut(DefIdSource, ast::DefId) -> ast::DefId,
+{
+ let mut region_bounds = Vec::new();
+ loop {
+ match next(st) {
+ 'R' => { region_bounds.push(parse_region_(st, conv)); }
+ '.' => { return region_bounds; }
+ c => { panic!("parse_bounds: bad bounds ('{}')", c); }
+ }
+ }
+}
+
bs: &ty::ParamBounds<'tcx>) {
enc_builtin_bounds(w, cx, &bs.builtin_bounds);
- for &r in &bs.region_bounds {
- mywrite!(w, "R");
- enc_region(w, cx, r);
- }
+ enc_region_bounds(w, cx, &bs.region_bounds);
for tp in &bs.trait_bounds {
mywrite!(w, "I");
mywrite!(w, ".");
}
+pub fn enc_region_bounds<'a, 'tcx>(w: &mut SeekableMemWriter,
+ cx: &ctxt<'a, 'tcx>,
+ rs: &[ty::Region]) {
+ for &r in rs {
+ mywrite!(w, "R");
+ enc_region(w, cx, r);
+ }
+
+ mywrite!(w, ".");
+}
+
pub fn enc_type_param_def<'a, 'tcx>(w: &mut SeekableMemWriter, cx: &ctxt<'a, 'tcx>,
v: &ty::TypeParameterDef<'tcx>) {
mywrite!(w, "{}:{}|{}|{}|",
token::get_name(v.name), (cx.ds)(v.def_id),
v.space.to_uint(), v.index);
- enc_bounds(w, cx, &v.bounds);
enc_opt(w, v.default, |w, t| enc_ty(w, cx, t));
enc_object_lifetime_default(w, cx, v.object_lifetime_default);
}
pub const NO_REGIONS: uint = 1;
pub const NO_TPS: uint = 2;
-pub fn check_path_args(tcx: &ty::ctxt,
- path: &ast::Path,
- flags: uint) {
- if (flags & NO_TPS) != 0 {
- if path.segments.iter().any(|s| s.parameters.has_types()) {
- span_err!(tcx.sess, path.span, E0109,
- "type parameters are not allowed on this type");
+pub fn check_path_args(tcx: &ty::ctxt, segments: &[ast::PathSegment], flags: uint) {
+ for segment in segments {
+ if (flags & NO_TPS) != 0 {
+ for typ in segment.parameters.types() {
+ span_err!(tcx.sess, typ.span, E0109,
+ "type parameters are not allowed on this type");
+ break;
+ }
}
- }
- if (flags & NO_REGIONS) != 0 {
- if path.segments.iter().any(|s| s.parameters.has_lifetimes()) {
- span_err!(tcx.sess, path.span, E0110,
- "region parameters are not allowed on this type");
+ if (flags & NO_REGIONS) != 0 {
+ for lifetime in segment.parameters.lifetimes() {
+ span_err!(tcx.sess, lifetime.span, E0110,
+ "lifetime parameters are not allowed on this type");
+ break;
+ }
}
}
}
+pub fn prim_ty_to_ty<'tcx>(tcx: &ty::ctxt<'tcx>,
+ segments: &[ast::PathSegment],
+ nty: ast::PrimTy)
+ -> Ty<'tcx> {
+ check_path_args(tcx, segments, NO_TPS | NO_REGIONS);
+ match nty {
+ ast::TyBool => tcx.types.bool,
+ ast::TyChar => tcx.types.char,
+ ast::TyInt(it) => ty::mk_mach_int(tcx, it),
+ ast::TyUint(uit) => ty::mk_mach_uint(tcx, uit),
+ ast::TyFloat(ft) => ty::mk_mach_float(tcx, ft),
+ ast::TyStr => ty::mk_str(tcx)
+ }
+}
+
pub fn ast_ty_to_prim_ty<'tcx>(tcx: &ty::ctxt<'tcx>, ast_ty: &ast::Ty)
-> Option<Ty<'tcx>> {
- match ast_ty.node {
- ast::TyPath(ref path, id) => {
- let a_def = match tcx.def_map.borrow().get(&id) {
- None => {
- tcx.sess.span_bug(ast_ty.span,
- &format!("unbound path {}",
- path.repr(tcx)))
- }
- Some(&d) => d
- };
- match a_def {
- def::DefPrimTy(nty) => {
- match nty {
- ast::TyBool => {
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- Some(tcx.types.bool)
- }
- ast::TyChar => {
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- Some(tcx.types.char)
- }
- ast::TyInt(it) => {
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- Some(ty::mk_mach_int(tcx, it))
- }
- ast::TyUint(uit) => {
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- Some(ty::mk_mach_uint(tcx, uit))
- }
- ast::TyFloat(ft) => {
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- Some(ty::mk_mach_float(tcx, ft))
- }
- ast::TyStr => {
- Some(ty::mk_str(tcx))
- }
- }
- }
- _ => None
+ if let ast::TyPath(None, ref path) = ast_ty.node {
+ let def = match tcx.def_map.borrow().get(&ast_ty.id) {
+ None => {
+ tcx.sess.span_bug(ast_ty.span,
+ &format!("unbound path {}", path.repr(tcx)))
}
+ Some(d) => d.full_def()
+ };
+ if let def::DefPrimTy(nty) = def {
+ Some(prim_ty_to_ty(tcx, &path.segments, nty))
+ } else {
+ None
}
- _ => None
+ } else {
+ None
}
}
-
use metadata::tyencode;
use middle::check_const::ConstQualif;
use middle::mem_categorization::Typer;
+use middle::privacy::{AllPublic, LastMod};
use middle::subst;
use middle::subst::VecPerParamSpace;
use middle::ty::{self, Ty, MethodCall, MethodCallee, MethodOrigin};
fn tr(&self, dcx: &DecodeContext) -> def::Def {
match *self {
def::DefFn(did, is_ctor) => def::DefFn(did.tr(dcx), is_ctor),
- def::DefStaticMethod(did, p) => {
- def::DefStaticMethod(did.tr(dcx), p.map(|did2| did2.tr(dcx)))
- }
- def::DefMethod(did0, did1, p) => {
- def::DefMethod(did0.tr(dcx),
- did1.map(|did1| did1.tr(dcx)),
- p.map(|did2| did2.tr(dcx)))
+ def::DefMethod(did, p) => {
+ def::DefMethod(did.tr(dcx), p.map(|did2| did2.tr(dcx)))
}
def::DefSelfTy(nid) => { def::DefSelfTy(dcx.tr_id(nid)) }
def::DefMod(did) => { def::DefMod(did.tr(dcx)) }
def::DefVariant(e_did, v_did, is_s) => {
def::DefVariant(e_did.tr(dcx), v_did.tr(dcx), is_s)
},
- def::DefaultImpl(did) => def::DefaultImpl(did.tr(dcx)),
+ def::DefTrait(did) => def::DefTrait(did.tr(dcx)),
def::DefTy(did, is_enum) => def::DefTy(did.tr(dcx), is_enum),
- def::DefAssociatedTy(did) => def::DefAssociatedTy(did.tr(dcx)),
- def::DefAssociatedPath(def::TyParamProvenance::FromSelf(did), ident) =>
- def::DefAssociatedPath(def::TyParamProvenance::FromSelf(did.tr(dcx)), ident),
- def::DefAssociatedPath(def::TyParamProvenance::FromParam(did), ident) =>
- def::DefAssociatedPath(def::TyParamProvenance::FromParam(did.tr(dcx)), ident),
+ def::DefAssociatedTy(trait_did, did) =>
+ def::DefAssociatedTy(trait_did.tr(dcx), did.tr(dcx)),
def::DefPrimTy(p) => def::DefPrimTy(p),
def::DefTyParam(s, index, def_id, n) => def::DefTyParam(s, index, def_id.tr(dcx), n),
def::DefUse(did) => def::DefUse(did.tr(dcx)),
}
def::DefStruct(did) => def::DefStruct(did.tr(dcx)),
def::DefRegion(nid) => def::DefRegion(dcx.tr_id(nid)),
- def::DefTyParamBinder(nid) => {
- def::DefTyParamBinder(dcx.tr_id(nid))
- }
def::DefLabel(nid) => def::DefLabel(dcx.tr_id(nid))
}
}
debug!("Encoding side tables for id {}", id);
- if let Some(def) = tcx.def_map.borrow().get(&id) {
+ if let Some(def) = tcx.def_map.borrow().get(&id).map(|d| d.full_def()) {
rbml_w.tag(c::tag_table_def, |rbml_w| {
rbml_w.id(id);
- rbml_w.tag(c::tag_table_val, |rbml_w| (*def).encode(rbml_w).unwrap());
+ rbml_w.tag(c::tag_table_val, |rbml_w| def.encode(rbml_w).unwrap());
})
}
match value {
c::tag_table_def => {
let def = decode_def(dcx, val_doc);
- dcx.tcx.def_map.borrow_mut().insert(id, def);
+ dcx.tcx.def_map.borrow_mut().insert(id, def::PathResolution {
+ base_def: def,
+ // This doesn't matter cross-crate.
+ last_private: LastMod(AllPublic),
+ depth: 0
+ });
}
c::tag_table_node_type => {
let ty = val_dsr.read_ty(dcx);
ast::ExprMac(..) |
ast::ExprClosure(..) |
ast::ExprLit(..) |
- ast::ExprPath(..) |
- ast::ExprQPath(..) => {
+ ast::ExprPath(..) => {
self.straightline(expr, pred, None::<ast::Expr>.iter())
}
}
fn find_scope(&self,
expr: &ast::Expr,
label: Option<ast::Ident>) -> LoopScope {
- match label {
- None => {
- return *self.loop_scopes.last().unwrap();
- }
-
- Some(_) => {
- match self.tcx.def_map.borrow().get(&expr.id) {
- Some(&def::DefLabel(loop_id)) => {
- for l in &self.loop_scopes {
- if l.loop_id == loop_id {
- return *l;
- }
- }
- self.tcx.sess.span_bug(
- expr.span,
- &format!("no loop scope for id {}",
- loop_id));
- }
+ if label.is_none() {
+ return *self.loop_scopes.last().unwrap();
+ }
- r => {
- self.tcx.sess.span_bug(
- expr.span,
- &format!("bad entry `{:?}` in def_map for label",
- r));
+ match self.tcx.def_map.borrow().get(&expr.id).map(|d| d.full_def()) {
+ Some(def::DefLabel(loop_id)) => {
+ for l in &self.loop_scopes {
+ if l.loop_id == loop_id {
+ return *l;
}
}
+ self.tcx.sess.span_bug(expr.span,
+ &format!("no loop scope for id {}", loop_id));
+ }
+
+ r => {
+ self.tcx.sess.span_bug(expr.span,
+ &format!("bad entry `{:?}` in def_map for label", r));
}
}
}
}
}
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- let def = v.tcx.def_map.borrow().get(&e.id).cloned();
+ ast::ExprPath(..) => {
+ let def = v.tcx.def_map.borrow().get(&e.id).map(|d| d.full_def());
match def {
Some(def::DefVariant(_, _, _)) => {
// Count the discriminator or function pointer.
v.add_qualif(NON_ZERO_SIZED);
}
}
- Some(def::DefFn(..)) |
- Some(def::DefStaticMethod(..)) | Some(def::DefMethod(..)) => {
+ Some(def::DefFn(..)) | Some(def::DefMethod(..)) => {
// Count the function pointer.
v.add_qualif(NON_ZERO_SIZED);
}
_ => break
};
}
- let def = v.tcx.def_map.borrow().get(&callee.id).cloned();
+ let def = v.tcx.def_map.borrow().get(&callee.id).map(|d| d.full_def());
match def {
Some(def::DefStruct(..)) => {}
Some(def::DefVariant(..)) => {
ast::PatIdent(ast::BindByValue(ast::MutImmutable), ident, None) => {
let pat_ty = ty::pat_ty(cx.tcx, p);
if let ty::ty_enum(def_id, _) = pat_ty.sty {
- let def = cx.tcx.def_map.borrow().get(&p.id).cloned();
+ let def = cx.tcx.def_map.borrow().get(&p.id).map(|d| d.full_def());
if let Some(DefLocal(_)) = def {
if ty::enum_variants(cx.tcx, def_id).iter().any(|variant|
token::get_name(variant.name) == token::get_name(ident.node.name)
fn fold_pat(&mut self, pat: P<Pat>) -> P<Pat> {
return match pat.node {
ast::PatIdent(..) | ast::PatEnum(..) => {
- let def = self.tcx.def_map.borrow().get(&pat.id).cloned();
+ let def = self.tcx.def_map.borrow().get(&pat.id).map(|d| d.full_def());
match def {
Some(DefConst(did)) => match lookup_const_by_id(self.tcx, did) {
Some(const_expr) => {
let pat = raw_pat(p);
match pat.node {
ast::PatIdent(..) =>
- match cx.tcx.def_map.borrow().get(&pat.id) {
- Some(&DefConst(..)) =>
+ match cx.tcx.def_map.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(DefConst(..)) =>
cx.tcx.sess.span_bug(pat.span, "const pattern should've \
been rewritten"),
- Some(&DefStruct(_)) => vec!(Single),
- Some(&DefVariant(_, id, _)) => vec!(Variant(id)),
+ Some(DefStruct(_)) => vec!(Single),
+ Some(DefVariant(_, id, _)) => vec!(Variant(id)),
_ => vec!()
},
ast::PatEnum(..) =>
- match cx.tcx.def_map.borrow().get(&pat.id) {
- Some(&DefConst(..)) =>
+ match cx.tcx.def_map.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(DefConst(..)) =>
cx.tcx.sess.span_bug(pat.span, "const pattern should've \
been rewritten"),
- Some(&DefVariant(_, id, _)) => vec!(Variant(id)),
+ Some(DefVariant(_, id, _)) => vec!(Variant(id)),
_ => vec!(Single)
},
ast::PatStruct(..) =>
- match cx.tcx.def_map.borrow().get(&pat.id) {
- Some(&DefConst(..)) =>
+ match cx.tcx.def_map.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(DefConst(..)) =>
cx.tcx.sess.span_bug(pat.span, "const pattern should've \
been rewritten"),
- Some(&DefVariant(_, id, _)) => vec!(Variant(id)),
+ Some(DefVariant(_, id, _)) => vec!(Variant(id)),
_ => vec!(Single)
},
ast::PatLit(ref expr) =>
Some(repeat(DUMMY_WILD_PAT).take(arity).collect()),
ast::PatIdent(_, _, _) => {
- let opt_def = cx.tcx.def_map.borrow().get(&pat_id).cloned();
+ let opt_def = cx.tcx.def_map.borrow().get(&pat_id).map(|d| d.full_def());
match opt_def {
Some(DefConst(..)) =>
cx.tcx.sess.span_bug(pat_span, "const pattern should've \
}
ast::PatEnum(_, ref args) => {
- let def = cx.tcx.def_map.borrow()[pat_id].clone();
+ let def = cx.tcx.def_map.borrow()[pat_id].full_def();
match def {
DefConst(..) =>
cx.tcx.sess.span_bug(pat_span, "const pattern should've \
ast::PatStruct(_, ref pattern_fields, _) => {
// Is this a struct or an enum variant?
- let def = cx.tcx.def_map.borrow()[pat_id].clone();
+ let def = cx.tcx.def_map.borrow()[pat_id].full_def();
let class_id = match def {
DefConst(..) =>
cx.tcx.sess.span_bug(pat_span, "const pattern should've \
fn visit_expr(&mut self, e: &ast::Expr) {
match e.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- match self.def_map.borrow().get(&e.id) {
- Some(&DefStatic(def_id, _)) |
- Some(&DefConst(def_id)) if
+ ast::ExprPath(..) => {
+ match self.def_map.borrow().get(&e.id).map(|d| d.base_def) {
+ Some(DefStatic(def_id, _)) |
+ Some(DefConst(def_id)) if
ast_util::is_local(def_id) => {
match self.ast_map.get(def_id.node) {
ast_map::NodeItem(item) =>
use std::rc::Rc;
fn lookup_const<'a>(tcx: &'a ty::ctxt, e: &Expr) -> Option<&'a Expr> {
- let opt_def = tcx.def_map.borrow().get(&e.id).cloned();
+ let opt_def = tcx.def_map.borrow().get(&e.id).map(|d| d.full_def());
match opt_def {
Some(def::DefConst(def_id)) => {
lookup_const_by_id(tcx, def_id)
ast::PatTup(exprs.iter().map(|expr| const_expr_to_pat(tcx, &**expr, span)).collect()),
ast::ExprCall(ref callee, ref args) => {
- let def = tcx.def_map.borrow()[callee.id].clone();
+ let def = tcx.def_map.borrow()[callee.id];
if let Vacant(entry) = tcx.def_map.borrow_mut().entry(expr.id) {
entry.insert(def);
}
- let path = match def {
+ let path = match def.full_def() {
def::DefStruct(def_id) => def_to_path(tcx, def_id),
def::DefVariant(_, variant_did, _) => def_to_path(tcx, variant_did),
_ => unreachable!()
ast::PatVec(pats, None, vec![])
}
- ast::ExprPath(ref path) => {
- let opt_def = tcx.def_map.borrow().get(&expr.id).cloned();
+ ast::ExprPath(_, ref path) => {
+ let opt_def = tcx.def_map.borrow().get(&expr.id).map(|d| d.full_def());
match opt_def {
Some(def::DefStruct(..)) =>
ast::PatStruct(path.clone(), vec![], false),
}
}
- ast::ExprQPath(_) => {
- match lookup_const(tcx, expr) {
- Some(actual) => return const_expr_to_pat(tcx, actual, span),
- _ => unreachable!()
- }
- }
-
_ => ast::PatLit(P(expr.clone()))
};
P(ast::Pat { id: expr.id, node: pat, span: span })
let val = try!(eval_const_expr_partial(tcx, &**base, Some(base_hint)));
cast_const(val, ety)
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- let opt_def = tcx.def_map.borrow().get(&e.id).cloned();
+ ast::ExprPath(..) => {
+ let opt_def = tcx.def_map.borrow().get(&e.id).map(|d| d.full_def());
let (const_expr, const_ty) = match opt_def {
Some(def::DefConst(def_id)) => {
if ast_util::is_local(def_id) {
fn lookup_and_handle_definition(&mut self, id: &ast::NodeId) {
self.tcx.def_map.borrow().get(id).map(|def| {
- match def {
- &def::DefConst(_) => {
+ match def.full_def() {
+ def::DefConst(_) => {
self.check_def_id(def.def_id())
}
_ if self.ignore_non_const_paths => (),
- &def::DefPrimTy(_) => (),
- &def::DefVariant(enum_id, variant_id, _) => {
+ def::DefPrimTy(_) => (),
+ def::DefVariant(enum_id, variant_id, _) => {
self.check_def_id(enum_id);
self.check_def_id(variant_id);
}
fn handle_field_pattern_match(&mut self, lhs: &ast::Pat,
pats: &[codemap::Spanned<ast::FieldPat>]) {
- let id = match (*self.tcx.def_map.borrow())[lhs.id] {
+ let id = match self.tcx.def_map.borrow()[lhs.id].full_def() {
def::DefVariant(_, id, _) => id,
_ => {
match ty::ty_to_def_id(ty::node_id_to_type(self.tcx,
pub use self::Def::*;
pub use self::MethodProvenance::*;
-pub use self::TraitItemKind::*;
+use middle::privacy::LastPrivate;
use middle::subst::ParamSpace;
-use middle::ty::{ExplicitSelfCategory, StaticExplicitSelfCategory};
use util::nodemap::NodeMap;
use syntax::ast;
use syntax::ast_util::local_def;
#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
pub enum Def {
DefFn(ast::DefId, bool /* is_ctor */),
- DefStaticMethod(/* method */ ast::DefId, MethodProvenance),
DefSelfTy(/* trait id */ ast::NodeId),
DefMod(ast::DefId),
DefForeignMod(ast::DefId),
DefLocal(ast::NodeId),
DefVariant(ast::DefId /* enum */, ast::DefId /* variant */, bool /* is_structure */),
DefTy(ast::DefId, bool /* is_enum */),
- DefAssociatedTy(ast::DefId),
- // A partially resolved path to an associated type `T::U` where `T` is a concrete
- // type (indicated by the DefId) which implements a trait which has an associated
- // type `U` (indicated by the Ident).
- // FIXME(#20301) -- should use Name
- DefAssociatedPath(TyParamProvenance, ast::Ident),
- DefaultImpl(ast::DefId),
+ DefAssociatedTy(ast::DefId /* trait */, ast::DefId),
+ DefTrait(ast::DefId),
DefPrimTy(ast::PrimTy),
DefTyParam(ParamSpace, u32, ast::DefId, ast::Name),
DefUse(ast::DefId),
/// - If it's an ExprPath referring to some tuple struct, then DefMap maps
/// it to a def whose id is the StructDef.ctor_id.
DefStruct(ast::DefId),
- DefTyParamBinder(ast::NodeId), /* struct, impl or trait with ty params */
DefRegion(ast::NodeId),
DefLabel(ast::NodeId),
- DefMethod(ast::DefId /* method */, Option<ast::DefId> /* trait */, MethodProvenance),
+ DefMethod(ast::DefId /* method */, MethodProvenance),
+}
+
+/// The result of resolving a path.
+/// Before type checking completes, `depth` represents the number of
+/// trailing segments which are yet unresolved. Afterwards, if there
+/// were no errors, all paths should be fully resolved, with `depth`
+/// set to `0` and `base_def` representing the final resolution.
+///
+/// module::Type::AssocX::AssocY::MethodOrAssocType
+/// ^~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+/// base_def depth = 3
+///
+/// <T as Trait>::AssocX::AssocY::MethodOrAssocType
+/// ^~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~
+/// base_def depth = 2
+#[derive(Copy, Debug)]
+pub struct PathResolution {
+ pub base_def: Def,
+ pub last_private: LastPrivate,
+ pub depth: usize
+}
+
+impl PathResolution {
+ /// Get the definition, if fully resolved, otherwise panic.
+ pub fn full_def(&self) -> Def {
+ if self.depth != 0 {
+ panic!("path not fully resolved: {:?}", self);
+ }
+ self.base_def
+ }
+
+ /// Get the DefId, if fully resolved, otherwise panic.
+ pub fn def_id(&self) -> ast::DefId {
+ self.full_def().def_id()
+ }
}
// Definition mapping
-pub type DefMap = RefCell<NodeMap<Def>>;
+pub type DefMap = RefCell<NodeMap<PathResolution>>;
// This is the replacement export map. It maps a module to all of the exports
// within.
pub type ExportMap = NodeMap<Vec<Export>>;
FromImpl(ast::DefId),
}
-#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
-pub enum TyParamProvenance {
- FromSelf(ast::DefId),
- FromParam(ast::DefId),
-}
-
impl MethodProvenance {
pub fn map<F>(self, f: F) -> MethodProvenance where
F: FnOnce(ast::DefId) -> ast::DefId,
}
}
-impl TyParamProvenance {
- pub fn def_id(&self) -> ast::DefId {
- match *self {
- TyParamProvenance::FromSelf(ref did) => did.clone(),
- TyParamProvenance::FromParam(ref did) => did.clone(),
- }
- }
-}
-
-#[derive(Clone, Copy, Eq, PartialEq)]
-pub enum TraitItemKind {
- NonstaticMethodTraitItemKind,
- StaticMethodTraitItemKind,
- TypeTraitItemKind,
-}
-
-impl TraitItemKind {
- pub fn from_explicit_self_category(explicit_self_category:
- ExplicitSelfCategory)
- -> TraitItemKind {
- if explicit_self_category == StaticExplicitSelfCategory {
- StaticMethodTraitItemKind
- } else {
- NonstaticMethodTraitItemKind
- }
- }
-}
-
impl Def {
pub fn local_node_id(&self) -> ast::NodeId {
let def_id = self.def_id();
pub fn def_id(&self) -> ast::DefId {
match *self {
- DefFn(id, _) | DefStaticMethod(id, _) | DefMod(id) |
- DefForeignMod(id) | DefStatic(id, _) |
- DefVariant(_, id, _) | DefTy(id, _) | DefAssociatedTy(id) |
- DefTyParam(_, _, id, _) | DefUse(id) | DefStruct(id) | DefaultImpl(id) |
- DefMethod(id, _, _) | DefConst(id) |
- DefAssociatedPath(TyParamProvenance::FromSelf(id), _) |
- DefAssociatedPath(TyParamProvenance::FromParam(id), _) => {
+ DefFn(id, _) | DefMod(id) | DefForeignMod(id) | DefStatic(id, _) |
+ DefVariant(_, id, _) | DefTy(id, _) | DefAssociatedTy(_, id) |
+ DefTyParam(_, _, id, _) | DefUse(id) | DefStruct(id) | DefTrait(id) |
+ DefMethod(id, _) | DefConst(id) => {
id
}
DefLocal(id) |
DefSelfTy(id) |
DefUpvar(id, _) |
DefRegion(id) |
- DefTyParamBinder(id) |
DefLabel(id) => {
local_def(id)
}
- DefPrimTy(_) => panic!()
+ DefPrimTy(_) => panic!("attempted .def_id() on DefPrimTy")
}
}
ast::ExprInlineAsm(..) => {
self.require_unsafe(expr.span, "use of inline assembly");
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
if let def::DefStatic(_, true) = ty::resolve_expr(self.tcx, expr) {
self.require_unsafe(expr.span, "use of mutable static");
}
self.walk_expr(&**subexpr)
}
- ast::ExprPath(_) | ast::ExprQPath(_) => { }
+ ast::ExprPath(..) => { }
ast::ExprUnary(ast::UnDeref, ref base) => { // *base
if !self.walk_overloaded_operator(expr, &**base, Vec::new(), PassArgs::ByRef) {
// Each match binding is effectively an assignment to the
// binding being produced.
- let def = def_map.borrow()[pat.id].clone();
+ let def = def_map.borrow()[pat.id].full_def();
match mc.cat_def(pat.id, pat.span, pat_ty, def) {
Ok(binding_cmt) => {
delegate.mutate(pat.id, pat.span, binding_cmt, Init);
match pat.node {
ast::PatEnum(_, _) | ast::PatIdent(_, _, None) | ast::PatStruct(..) => {
- match def_map.get(&pat.id) {
+ match def_map.get(&pat.id).map(|d| d.full_def()) {
None => {
// no definition found: pat is not a
// struct or enum pattern.
}
- Some(&def::DefVariant(enum_did, variant_did, _is_struct)) => {
+ Some(def::DefVariant(enum_did, variant_did, _is_struct)) => {
let downcast_cmt =
if ty::enum_is_univariant(tcx, enum_did) {
cmt_pat
delegate.matched_pat(pat, downcast_cmt, match_mode);
}
- Some(&def::DefStruct(..)) | Some(&def::DefTy(_, false)) => {
+ Some(def::DefStruct(..)) | Some(def::DefTy(_, false)) => {
// A struct (in either the value or type
// namespace; we encounter the former on
// e.g. patterns for unit structs).
delegate.matched_pat(pat, cmt_pat, match_mode);
}
- Some(&def::DefConst(..)) |
- Some(&def::DefLocal(..)) => {
+ Some(def::DefConst(..)) |
+ Some(def::DefLocal(..)) => {
// This is a leaf (i.e. identifier binding
// or constant value to match); thus no
// `matched_pat` call.
}
- Some(def @ &def::DefTy(_, true)) => {
+ Some(def @ def::DefTy(_, true)) => {
// An enum's type -- should never be in a
// pattern.
variadic: a.variadic});
- fn argvecs<'tcx, C: Combine<'tcx>>(combiner: &C,
- a_args: &[Ty<'tcx>],
- b_args: &[Ty<'tcx>])
- -> cres<'tcx, Vec<Ty<'tcx>>>
- {
+ fn argvecs<'tcx, C>(combiner: &C,
+ a_args: &[Ty<'tcx>],
+ b_args: &[Ty<'tcx>])
+ -> cres<'tcx, Vec<Ty<'tcx>>>
+ where C: Combine<'tcx> {
if a_args.len() == b_args.len() {
a_args.iter().zip(b_args.iter())
.map(|(a, b)| combiner.args(*a, *b)).collect()
Err(ty::terr_projection_name_mismatched(
expected_found(self, a.item_name, b.item_name)))
} else {
- // Note that the trait refs for the projection must be
- // *equal*. This is because there is no inherent
- // relationship between `<T as Foo>::Bar` and `<U as
- // Foo>::Bar` that we can derive based on how `T` relates
- // to `U`. Issue #21726 contains further discussion and
- // in-depth examples.
- let trait_ref = try!(self.equate().trait_refs(&*a.trait_ref, &*b.trait_ref));
+ let trait_ref = try!(self.trait_refs(&*a.trait_ref, &*b.trait_ref));
Ok(ty::ProjectionTy { trait_ref: Rc::new(trait_ref), item_name: a.item_name })
}
}
impl<'tcx,T> Combineable<'tcx> for Rc<T>
where T : Combineable<'tcx>
{
- fn combine<C:Combine<'tcx>>(combiner: &C,
- a: &Rc<T>,
- b: &Rc<T>)
- -> cres<'tcx, Rc<T>>
- {
+ fn combine<C>(combiner: &C,
+ a: &Rc<T>,
+ b: &Rc<T>)
+ -> cres<'tcx, Rc<T>>
+ where C: Combine<'tcx> {
Ok(Rc::new(try!(Combineable::combine(combiner, &**a, &**b))))
}
}
impl<'tcx> Combineable<'tcx> for ty::TraitRef<'tcx> {
- fn combine<C:Combine<'tcx>>(combiner: &C,
- a: &ty::TraitRef<'tcx>,
- b: &ty::TraitRef<'tcx>)
- -> cres<'tcx, ty::TraitRef<'tcx>>
- {
+ fn combine<C>(combiner: &C,
+ a: &ty::TraitRef<'tcx>,
+ b: &ty::TraitRef<'tcx>)
+ -> cres<'tcx, ty::TraitRef<'tcx>>
+ where C: Combine<'tcx> {
combiner.trait_refs(a, b)
}
}
impl<'tcx> Combineable<'tcx> for Ty<'tcx> {
- fn combine<C:Combine<'tcx>>(combiner: &C,
- a: &Ty<'tcx>,
- b: &Ty<'tcx>)
- -> cres<'tcx, Ty<'tcx>>
- {
+ fn combine<C>(combiner: &C,
+ a: &Ty<'tcx>,
+ b: &Ty<'tcx>)
+ -> cres<'tcx, Ty<'tcx>>
+ where C: Combine<'tcx> {
combiner.tys(*a, *b)
}
}
impl<'tcx> Combineable<'tcx> for ty::ProjectionPredicate<'tcx> {
- fn combine<C:Combine<'tcx>>(combiner: &C,
- a: &ty::ProjectionPredicate<'tcx>,
- b: &ty::ProjectionPredicate<'tcx>)
- -> cres<'tcx, ty::ProjectionPredicate<'tcx>>
- {
+ fn combine<C>(combiner: &C,
+ a: &ty::ProjectionPredicate<'tcx>,
+ b: &ty::ProjectionPredicate<'tcx>)
+ -> cres<'tcx, ty::ProjectionPredicate<'tcx>>
+ where C: Combine<'tcx> {
combiner.projection_predicates(a, b)
}
}
impl<'tcx> Combineable<'tcx> for ty::FnSig<'tcx> {
- fn combine<C:Combine<'tcx>>(combiner: &C,
- a: &ty::FnSig<'tcx>,
- b: &ty::FnSig<'tcx>)
- -> cres<'tcx, ty::FnSig<'tcx>>
- {
+ fn combine<C>(combiner: &C,
+ a: &ty::FnSig<'tcx>,
+ b: &ty::FnSig<'tcx>)
+ -> cres<'tcx, ty::FnSig<'tcx>>
+ where C: Combine<'tcx> {
combiner.fn_sigs(a, b)
}
}
pub trace: TypeTrace<'tcx>,
}
-pub fn expected_found<'tcx, C: Combine<'tcx>, T>(
- this: &C, a: T, b: T) -> ty::expected_found<T> {
+pub fn expected_found<'tcx, C, T>(this: &C,
+ a: T,
+ b: T)
+ -> ty::expected_found<T>
+ where C: Combine<'tcx> {
if this.a_is_expected() {
ty::expected_found {expected: a, found: b}
} else {
}
}
-pub fn super_tys<'tcx, C: Combine<'tcx>>(this: &C,
- a: Ty<'tcx>,
- b: Ty<'tcx>)
- -> cres<'tcx, Ty<'tcx>>
-{
+pub fn super_tys<'tcx, C>(this: &C,
+ a: Ty<'tcx>,
+ b: Ty<'tcx>)
+ -> cres<'tcx, Ty<'tcx>>
+ where C: Combine<'tcx> {
let tcx = this.infcx().tcx;
let a_sty = &a.sty;
let b_sty = &b.sty;
debug!("super_tys: a_sty={:?} b_sty={:?}", a_sty, b_sty);
return match (a_sty, b_sty) {
- // The "subtype" ought to be handling cases involving var:
- (&ty::ty_infer(TyVar(_)), _) |
- (_, &ty::ty_infer(TyVar(_))) => {
- tcx.sess.bug(
- &format!("{}: bot and var types should have been handled ({},{})",
- this.tag(),
- a.repr(this.infcx().tcx),
- b.repr(this.infcx().tcx)));
- }
-
- (&ty::ty_err, _) | (_, &ty::ty_err) => {
- Ok(tcx.types.err)
- }
+ // The "subtype" ought to be handling cases involving var:
+ (&ty::ty_infer(TyVar(_)), _)
+ | (_, &ty::ty_infer(TyVar(_))) =>
+ tcx.sess.bug(
+ &format!("{}: bot and var types should have been handled ({},{})",
+ this.tag(),
+ a.repr(this.infcx().tcx),
+ b.repr(this.infcx().tcx))),
+
+ (&ty::ty_err, _) | (_, &ty::ty_err) => Ok(tcx.types.err),
// Relate integral variables to other types
(&ty::ty_infer(IntVar(a_id)), &ty::ty_infer(IntVar(b_id))) => {
unify_float_variable(this, !this.a_is_expected(), v_id, v)
}
- (&ty::ty_char, _) |
- (&ty::ty_bool, _) |
- (&ty::ty_int(_), _) |
- (&ty::ty_uint(_), _) |
- (&ty::ty_float(_), _) => {
- if a == b {
- Ok(a)
- } else {
- Err(ty::terr_sorts(expected_found(this, a, b)))
- }
- }
-
- (&ty::ty_param(ref a_p), &ty::ty_param(ref b_p)) if
- a_p.idx == b_p.idx && a_p.space == b_p.space => {
- Ok(a)
- }
-
- (&ty::ty_enum(a_id, a_substs),
- &ty::ty_enum(b_id, b_substs))
- if a_id == b_id => {
- let substs = try!(this.substs(a_id,
- a_substs,
- b_substs));
- Ok(ty::mk_enum(tcx, a_id, tcx.mk_substs(substs)))
- }
-
- (&ty::ty_trait(ref a_),
- &ty::ty_trait(ref b_)) => {
- debug!("Trying to match traits {:?} and {:?}", a, b);
- let principal = try!(this.binders(&a_.principal, &b_.principal));
- let bounds = try!(this.existential_bounds(&a_.bounds, &b_.bounds));
- Ok(ty::mk_trait(tcx, principal, bounds))
- }
-
- (&ty::ty_struct(a_id, a_substs), &ty::ty_struct(b_id, b_substs))
- if a_id == b_id => {
+ (&ty::ty_char, _)
+ | (&ty::ty_bool, _)
+ | (&ty::ty_int(_), _)
+ | (&ty::ty_uint(_), _)
+ | (&ty::ty_float(_), _) => {
+ if a == b {
+ Ok(a)
+ } else {
+ Err(ty::terr_sorts(expected_found(this, a, b)))
+ }
+ }
+
+ (&ty::ty_param(ref a_p), &ty::ty_param(ref b_p)) if
+ a_p.idx == b_p.idx && a_p.space == b_p.space => Ok(a),
+
+ (&ty::ty_enum(a_id, a_substs), &ty::ty_enum(b_id, b_substs))
+ if a_id == b_id => {
+ let substs = try!(this.substs(a_id, a_substs, b_substs));
+ Ok(ty::mk_enum(tcx, a_id, tcx.mk_substs(substs)))
+ }
+
+ (&ty::ty_trait(ref a_), &ty::ty_trait(ref b_)) => {
+ debug!("Trying to match traits {:?} and {:?}", a, b);
+ let principal = try!(this.binders(&a_.principal, &b_.principal));
+ let bounds = try!(this.existential_bounds(&a_.bounds, &b_.bounds));
+ Ok(ty::mk_trait(tcx, principal, bounds))
+ }
+
+ (&ty::ty_struct(a_id, a_substs), &ty::ty_struct(b_id, b_substs))
+ if a_id == b_id => {
let substs = try!(this.substs(a_id, a_substs, b_substs));
Ok(ty::mk_struct(tcx, a_id, tcx.mk_substs(substs)))
- }
-
- (&ty::ty_closure(a_id, a_region, a_substs),
- &ty::ty_closure(b_id, b_region, b_substs))
- if a_id == b_id => {
- // All ty_closure types with the same id represent
- // the (anonymous) type of the same closure expression. So
- // all of their regions should be equated.
- let region = try!(this.equate().regions(*a_region, *b_region));
- let substs = try!(this.substs_variances(None, a_substs, b_substs));
- Ok(ty::mk_closure(tcx, a_id, tcx.mk_region(region), tcx.mk_substs(substs)))
- }
-
- (&ty::ty_uniq(a_inner), &ty::ty_uniq(b_inner)) => {
- let typ = try!(this.tys(a_inner, b_inner));
- Ok(ty::mk_uniq(tcx, typ))
- }
-
- (&ty::ty_ptr(ref a_mt), &ty::ty_ptr(ref b_mt)) => {
- let mt = try!(this.mts(a_mt, b_mt));
- Ok(ty::mk_ptr(tcx, mt))
- }
-
- (&ty::ty_rptr(a_r, ref a_mt), &ty::ty_rptr(b_r, ref b_mt)) => {
+ }
+
+ (&ty::ty_closure(a_id, a_region, a_substs),
+ &ty::ty_closure(b_id, b_region, b_substs))
+ if a_id == b_id => {
+ // All ty_closure types with the same id represent
+ // the (anonymous) type of the same closure expression. So
+ // all of their regions should be equated.
+ let region = try!(this.equate().regions(*a_region, *b_region));
+ let substs = try!(this.substs_variances(None, a_substs, b_substs));
+ Ok(ty::mk_closure(tcx, a_id, tcx.mk_region(region), tcx.mk_substs(substs)))
+ }
+
+ (&ty::ty_uniq(a_inner), &ty::ty_uniq(b_inner)) => {
+ let typ = try!(this.tys(a_inner, b_inner));
+ Ok(ty::mk_uniq(tcx, typ))
+ }
+
+ (&ty::ty_ptr(ref a_mt), &ty::ty_ptr(ref b_mt)) => {
+ let mt = try!(this.mts(a_mt, b_mt));
+ Ok(ty::mk_ptr(tcx, mt))
+ }
+
+ (&ty::ty_rptr(a_r, ref a_mt), &ty::ty_rptr(b_r, ref b_mt)) => {
let r = try!(this.regions_with_variance(ty::Contravariant, *a_r, *b_r));
// FIXME(14985) If we have mutable references to trait objects, we
_ => try!(this.mts(a_mt, b_mt))
};
Ok(ty::mk_rptr(tcx, tcx.mk_region(r), mt))
- }
+ }
- (&ty::ty_vec(a_t, Some(sz_a)), &ty::ty_vec(b_t, Some(sz_b))) => {
- this.tys(a_t, b_t).and_then(|t| {
- if sz_a == sz_b {
- Ok(ty::mk_vec(tcx, t, Some(sz_a)))
- } else {
- Err(ty::terr_fixed_array_size(expected_found(this, sz_a, sz_b)))
- }
- })
- }
+ (&ty::ty_vec(a_t, Some(sz_a)), &ty::ty_vec(b_t, Some(sz_b))) => {
+ this.tys(a_t, b_t).and_then(|t| {
+ if sz_a == sz_b {
+ Ok(ty::mk_vec(tcx, t, Some(sz_a)))
+ } else {
+ Err(ty::terr_fixed_array_size(expected_found(this, sz_a, sz_b)))
+ }
+ })
+ }
- (&ty::ty_vec(a_t, sz_a), &ty::ty_vec(b_t, sz_b)) => {
- this.tys(a_t, b_t).and_then(|t| {
- if sz_a == sz_b {
- Ok(ty::mk_vec(tcx, t, sz_a))
+ (&ty::ty_vec(a_t, sz_a), &ty::ty_vec(b_t, sz_b)) => {
+ this.tys(a_t, b_t).and_then(|t| {
+ if sz_a == sz_b {
+ Ok(ty::mk_vec(tcx, t, sz_a))
+ } else {
+ Err(ty::terr_sorts(expected_found(this, a, b)))
+ }
+ })
+ }
+
+ (&ty::ty_str, &ty::ty_str) => Ok(ty::mk_str(tcx)),
+
+ (&ty::ty_tup(ref as_), &ty::ty_tup(ref bs)) => {
+ if as_.len() == bs.len() {
+ as_.iter().zip(bs.iter())
+ .map(|(a, b)| this.tys(*a, *b))
+ .collect::<Result<_, _>>()
+ .map(|ts| ty::mk_tup(tcx, ts))
+ } else if as_.len() != 0 && bs.len() != 0 {
+ Err(ty::terr_tuple_size(
+ expected_found(this, as_.len(), bs.len())))
} else {
Err(ty::terr_sorts(expected_found(this, a, b)))
}
- })
- }
-
- (&ty::ty_str, &ty::ty_str) => {
- Ok(ty::mk_str(tcx))
- }
-
- (&ty::ty_tup(ref as_), &ty::ty_tup(ref bs)) => {
- if as_.len() == bs.len() {
- as_.iter().zip(bs.iter())
- .map(|(a, b)| this.tys(*a, *b))
- .collect::<Result<_, _>>()
- .map(|ts| ty::mk_tup(tcx, ts))
- } else if as_.len() != 0 && bs.len() != 0 {
- Err(ty::terr_tuple_size(
- expected_found(this, as_.len(), bs.len())))
- } else {
- Err(ty::terr_sorts(expected_found(this, a, b)))
}
- }
(&ty::ty_bare_fn(a_opt_def_id, a_fty), &ty::ty_bare_fn(b_opt_def_id, b_fty))
if a_opt_def_id == b_opt_def_id =>
Ok(ty::mk_bare_fn(tcx, a_opt_def_id, tcx.mk_bare_fn(fty)))
}
- (&ty::ty_projection(ref a_data), &ty::ty_projection(ref b_data)) => {
- let projection_ty = try!(this.projection_tys(a_data, b_data));
- Ok(ty::mk_projection(tcx, projection_ty.trait_ref, projection_ty.item_name))
- }
+ (&ty::ty_projection(ref a_data), &ty::ty_projection(ref b_data)) => {
+ let projection_ty = try!(this.projection_tys(a_data, b_data));
+ Ok(ty::mk_projection(tcx, projection_ty.trait_ref, projection_ty.item_name))
+ }
- _ => Err(ty::terr_sorts(expected_found(this, a, b)))
+ _ => Err(ty::terr_sorts(expected_found(this, a, b))),
};
- fn unify_integral_variable<'tcx, C: Combine<'tcx>>(
- this: &C,
- vid_is_expected: bool,
- vid: ty::IntVid,
- val: ty::IntVarValue) -> cres<'tcx, Ty<'tcx>>
- {
+ fn unify_integral_variable<'tcx, C>(this: &C,
+ vid_is_expected: bool,
+ vid: ty::IntVid,
+ val: ty::IntVarValue)
+ -> cres<'tcx, Ty<'tcx>>
+ where C: Combine<'tcx> {
try!(this.infcx().simple_var_t(vid_is_expected, vid, val));
match val {
IntType(v) => Ok(ty::mk_mach_int(this.tcx(), v)),
- UintType(v) => Ok(ty::mk_mach_uint(this.tcx(), v))
+ UintType(v) => Ok(ty::mk_mach_uint(this.tcx(), v)),
}
}
- fn unify_float_variable<'tcx, C: Combine<'tcx>>(
- this: &C,
- vid_is_expected: bool,
- vid: ty::FloatVid,
- val: ast::FloatTy) -> cres<'tcx, Ty<'tcx>>
- {
+ fn unify_float_variable<'tcx, C>(this: &C,
+ vid_is_expected: bool,
+ vid: ty::FloatVid,
+ val: ast::FloatTy)
+ -> cres<'tcx, Ty<'tcx>>
+ where C: Combine<'tcx> {
try!(this.infcx().simple_var_t(vid_is_expected, vid, val));
Ok(ty::mk_mach_float(this.tcx(), val))
}
None => { // ...not yet instantiated:
// Generalize type if necessary.
let generalized_ty = try!(match dir {
- EqTo => {
- self.generalize(a_ty, b_vid, false)
- }
- BiTo | SupertypeOf | SubtypeOf => {
- self.generalize(a_ty, b_vid, true)
- }
+ EqTo => self.generalize(a_ty, b_vid, false),
+ BiTo | SupertypeOf | SubtypeOf => self.generalize(a_ty, b_vid, true),
});
debug!("instantiate(a_ty={}, dir={:?}, \
b_vid={}, generalized_ty={})",
// to associate causes/spans with each of the relations in
// the stack to get this right.
match dir {
- BiTo => {
- try!(self.bivariate().tys(a_ty, b_ty));
- }
+ BiTo => try!(self.bivariate().tys(a_ty, b_ty)),
- EqTo => {
- try!(self.equate().tys(a_ty, b_ty));
- }
+ EqTo => try!(self.equate().tys(a_ty, b_ty)),
- SubtypeOf => {
- try!(self.sub().tys(a_ty, b_ty));
- }
+ SubtypeOf => try!(self.sub().tys(a_ty, b_ty)),
- SupertypeOf => {
- try!(self.sub().tys_with_variance(ty::Contravariant, a_ty, b_ty));
- }
- }
+ SupertypeOf => try!(self.sub().tys_with_variance(ty::Contravariant, a_ty, b_ty)),
+ };
}
Ok(())
make_region_vars: bool)
-> cres<'tcx, Ty<'tcx>>
{
- let mut generalize = Generalizer { infcx: self.infcx,
- span: self.trace.origin.span(),
- for_vid: for_vid,
- make_region_vars: make_region_vars,
- cycle_detected: false };
+ let mut generalize = Generalizer {
+ infcx: self.infcx,
+ span: self.trace.origin.span(),
+ for_vid: for_vid,
+ make_region_vars: make_region_vars,
+ cycle_detected: false
+ };
let u = ty.fold_with(&mut generalize);
if generalize.cycle_detected {
Err(ty::terr_cyclic_ty)
}
ty_queue.push(&*mut_ty.ty);
}
- ast::TyPath(ref path, id) => {
- let a_def = match self.tcx.def_map.borrow().get(&id) {
+ ast::TyPath(ref maybe_qself, ref path) => {
+ let a_def = match self.tcx.def_map.borrow().get(&cur_ty.id) {
None => {
self.tcx
.sess
"unbound path {}",
pprust::path_to_string(path)))
}
- Some(&d) => d
+ Some(d) => d.full_def()
};
match a_def {
def::DefTy(did, _) | def::DefStruct(did) => {
region_names: region_names
};
let new_path = self.rebuild_path(rebuild_info, lifetime);
+ let qself = maybe_qself.as_ref().map(|qself| {
+ ast::QSelf {
+ ty: self.rebuild_arg_ty_or_output(&qself.ty, lifetime,
+ anon_nums, region_names),
+ position: qself.position
+ }
+ });
let to = ast::Ty {
id: cur_ty.id,
- node: ast::TyPath(new_path, id),
+ node: ast::TyPath(qself, new_path),
span: cur_ty.span
};
new_ty = self.rebuild_ty(new_ty, P(to));
true // changed
}
- ErrorValue => {
- false // no change
- }
+ ErrorValue => false, // no change
Value(a_region) => {
match a_data.classification {
- Expanding => {
- check_node(self, a_vid, a_data, a_region, b_region)
- }
- Contracting => {
- adjust_node(self, a_vid, a_data, a_region, b_region)
- }
+ Expanding => check_node(self, a_vid, a_data, a_region, b_region),
+ Contracting => adjust_node(self, a_vid, a_data, a_region, b_region),
}
}
};
a_data: &mut VarData,
a_region: Region,
b_region: Region)
- -> bool {
+ -> bool {
if !this.is_subregion_of(a_region, b_region) {
debug!("Setting {:?} to ErrorValue: {} not subregion of {}",
a_vid,
a_data: &mut VarData,
a_region: Region,
b_region: Region)
- -> bool {
+ -> bool {
match this.glb_concrete_regions(a_region, b_region) {
Ok(glb) => {
if glb == a_region {
fn visit_expr(ir: &mut IrMaps, expr: &Expr) {
match expr.node {
// live nodes required for uses or definitions of variables:
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- let def = ir.tcx.def_map.borrow()[expr.id].clone();
+ ast::ExprPath(..) => {
+ let def = ir.tcx.def_map.borrow()[expr.id].full_def();
debug!("expr {}: path that leads to {:?}", expr.id, def);
if let DefLocal(..) = def {
ir.add_live_node_for_node(expr.id, ExprNode(expr.span));
Some(_) => {
// Refers to a labeled loop. Use the results of resolve
// to find with one
- match self.ir.tcx.def_map.borrow().get(&id) {
- Some(&DefLabel(loop_id)) => loop_id,
+ match self.ir.tcx.def_map.borrow().get(&id).map(|d| d.full_def()) {
+ Some(DefLabel(loop_id)) => loop_id,
_ => self.ir.tcx.sess.span_bug(sp, "label on break/loop \
doesn't refer to a loop")
}
match expr.node {
// Interesting cases with control flow or which gen/kill
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
self.access_path(expr, succ, ACC_READ | ACC_USE)
}
// just ignore such cases and treat them as reads.
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => succ,
+ ast::ExprPath(..) => succ,
ast::ExprField(ref e, _) => self.propagate_through_expr(&**e, succ),
ast::ExprTupField(ref e, _) => self.propagate_through_expr(&**e, succ),
_ => self.propagate_through_expr(expr, succ)
fn write_lvalue(&mut self, expr: &Expr, succ: LiveNode, acc: uint)
-> LiveNode {
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
self.access_path(expr, succ, acc)
}
fn access_path(&mut self, expr: &Expr, succ: LiveNode, acc: uint)
-> LiveNode {
- match self.ir.tcx.def_map.borrow()[expr.id].clone() {
+ match self.ir.tcx.def_map.borrow()[expr.id].full_def() {
DefLocal(nid) => {
let ln = self.live_node(expr.id, expr.span);
if acc != 0 {
ast::ExprBlock(..) | ast::ExprMac(..) | ast::ExprAddrOf(..) |
ast::ExprStruct(..) | ast::ExprRepeat(..) | ast::ExprParen(..) |
ast::ExprClosure(..) | ast::ExprPath(..) | ast::ExprBox(..) |
- ast::ExprRange(..) | ast::ExprQPath(..) => {
+ ast::ExprRange(..) => {
visit::walk_expr(this, expr);
}
ast::ExprIfLet(..) => {
fn check_lvalue(&mut self, expr: &Expr) {
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- if let DefLocal(nid) = self.ir.tcx.def_map.borrow()[expr.id].clone() {
+ ast::ExprPath(..) => {
+ if let DefLocal(nid) = self.ir.tcx.def_map.borrow()[expr.id].full_def() {
// Assignment to an immutable variable or argument: only legal
// if there is no later assignment. If this local is actually
// mutable, then check for a reassignment to flag the mutability
}
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- let def = (*self.tcx().def_map.borrow())[expr.id];
+ ast::ExprPath(..) => {
+ let def = self.tcx().def_map.borrow()[expr.id].full_def();
self.cat_def(expr.id, expr.span, expr_ty, def)
}
match def {
def::DefStruct(..) | def::DefVariant(..) | def::DefConst(..) |
- def::DefFn(..) | def::DefStaticMethod(..) | def::DefMethod(..) => {
+ def::DefFn(..) | def::DefMethod(..) => {
Ok(self.cat_rvalue_node(id, span, expr_ty))
}
def::DefMod(_) | def::DefForeignMod(_) | def::DefUse(_) |
- def::DefaultImpl(_) | def::DefTy(..) | def::DefPrimTy(_) |
- def::DefTyParam(..) | def::DefTyParamBinder(..) | def::DefRegion(_) |
+ def::DefTrait(_) | def::DefTy(..) | def::DefPrimTy(_) |
+ def::DefTyParam(..) | def::DefRegion(_) |
def::DefLabel(_) | def::DefSelfTy(..) |
- def::DefAssociatedTy(..) | def::DefAssociatedPath(..)=> {
+ def::DefAssociatedTy(..) => {
Ok(Rc::new(cmt_ {
id:id,
span:span,
(*op)(self, cmt.clone(), pat);
- let def_map = self.tcx().def_map.borrow();
- let opt_def = def_map.get(&pat.id);
+ let opt_def = self.tcx().def_map.borrow().get(&pat.id).map(|d| d.full_def());
// Note: This goes up here (rather than within the PatEnum arm
// alone) because struct patterns can refer to struct types or
// to struct variants within enums.
let cmt = match opt_def {
- Some(&def::DefVariant(enum_did, variant_did, _))
+ Some(def::DefVariant(enum_did, variant_did, _))
// univariant enums do not need downcasts
if !ty::enum_is_univariant(self.tcx(), enum_did) => {
self.cat_downcast(pat, cmt.clone(), cmt.ty, variant_did)
}
ast::PatEnum(_, Some(ref subpats)) => {
match opt_def {
- Some(&def::DefVariant(..)) => {
+ Some(def::DefVariant(..)) => {
// variant(x, y, z)
for (i, subpat) in subpats.iter().enumerate() {
let subpat_ty = try!(self.pat_ty(&**subpat)); // see (*2)
try!(self.cat_pattern_(subcmt, &**subpat, op));
}
}
- Some(&def::DefStruct(..)) => {
+ Some(def::DefStruct(..)) => {
for (i, subpat) in subpats.iter().enumerate() {
let subpat_ty = try!(self.pat_ty(&**subpat)); // see (*2)
let cmt_field =
try!(self.cat_pattern_(cmt_field, &**subpat, op));
}
}
- Some(&def::DefConst(..)) => {
+ Some(def::DefConst(..)) => {
for subpat in subpats {
try!(self.cat_pattern_(cmt.clone(), &**subpat, op));
}
ast::PatEnum(_, _) |
ast::PatIdent(_, _, None) |
ast::PatStruct(..) => {
- match dm.borrow().get(&pat.id) {
- Some(&DefVariant(..)) => true,
+ match dm.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(DefVariant(..)) => true,
_ => false
}
}
ast::PatEnum(_, _) |
ast::PatIdent(_, _, None) |
ast::PatStruct(..) => {
- match dm.borrow().get(&pat.id) {
- Some(&DefVariant(..)) | Some(&DefStruct(..)) => true,
+ match dm.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(DefVariant(..)) | Some(DefStruct(..)) => true,
_ => false
}
}
pub fn pat_is_const(dm: &DefMap, pat: &ast::Pat) -> bool {
match pat.node {
ast::PatIdent(_, _, None) | ast::PatEnum(..) => {
- match dm.borrow().get(&pat.id) {
- Some(&DefConst(..)) => true,
+ match dm.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(DefConst(..)) => true,
_ => false
}
}
pub use self::ImportUse::*;
pub use self::LastPrivate::*;
-use util::nodemap::{DefIdSet, NodeMap, NodeSet};
+use util::nodemap::{DefIdSet, NodeSet};
use syntax::ast;
/// reexporting a public struct doesn't inline the doc).
pub type PublicItems = NodeSet;
-// FIXME: dox
-pub type LastPrivateMap = NodeMap<LastPrivate>;
-
#[derive(Copy, Debug)]
pub enum LastPrivate {
LastMod(PrivateDep),
fn visit_expr(&mut self, expr: &ast::Expr) {
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
let def = match self.tcx.def_map.borrow().get(&expr.id) {
- Some(&def) => def,
+ Some(d) => d.full_def(),
None => {
self.tcx.sess.span_bug(expr.span,
"def ID not in def map?!")
visit::walk_ty(this, ty);
});
}
- ast::TyPath(ref path, id) => {
+ ast::TyPath(None, ref path) => {
// if this path references a trait, then this will resolve to
// a trait ref, which introduces a binding scope.
- match self.def_map.borrow().get(&id) {
- Some(&def::DefaultImpl(..)) => {
+ match self.def_map.borrow().get(&ty.id).map(|d| (d.base_def, d.depth)) {
+ Some((def::DefTrait(..), 0)) => {
self.with(LateScope(&Vec::new(), self.scope), |_, this| {
- this.visit_path(path, id);
+ this.visit_path(path, ty.id);
});
}
_ => {
for lifetime in &trait_ref.bound_lifetimes {
this.visit_lifetime_def(lifetime);
}
- this.visit_trait_ref(&trait_ref.trait_ref)
+ visit::walk_path(this, &trait_ref.trait_ref.path)
})
} else {
self.visit_trait_ref(&trait_ref.trait_ref)
}
}
-
- fn visit_trait_ref(&mut self, trait_ref: &ast::TraitRef) {
- self.visit_path(&trait_ref.path, trait_ref.ref_id);
- }
}
impl<'a> LifetimeContext<'a> {
attrs: &Vec<Attribute>, item_sp: Span, f: F, required: bool) where
F: FnOnce(&mut Annotator),
{
+ debug!("annotate(id = {:?}, attrs = {:?})", id, attrs);
match attr::find_stability(self.sess.diagnostic(), attrs, item_sp) {
Some(stab) => {
+ debug!("annotate: found {:?}", stab);
self.index.local.insert(id, stab.clone());
// Don't inherit #[stable(feature = "rust1", since = "1.0.0")]
}
}
None => {
+ debug!("annotate: not found, use_parent = {:?}, parent = {:?}",
+ use_parent, self.parent);
if use_parent {
if let Some(stab) = self.parent.clone() {
self.index.local.insert(id, stab);
&mut |id, sp, stab| self.check(id, sp, stab));
visit::walk_path(self, path)
}
+
+ fn visit_pat(&mut self, pat: &ast::Pat) {
+ check_pat(self.tcx, pat,
+ &mut |id, sp, stab| self.check(id, sp, stab));
+ visit::walk_pat(self, pat)
+ }
}
/// Helper for discovering nodes to check for stability
None => return
}
}
+ ast::ExprField(ref base_e, ref field) => {
+ span = field.span;
+ match ty::expr_ty_adjusted(tcx, base_e).sty {
+ ty::ty_struct(did, _) => {
+ ty::lookup_struct_fields(tcx, did)
+ .iter()
+ .find(|f| f.name == field.node.name)
+ .unwrap_or_else(|| {
+ tcx.sess.span_bug(field.span,
+ "stability::check_expr: unknown named field access")
+ })
+ .id
+ }
+ _ => tcx.sess.span_bug(e.span,
+ "stability::check_expr: named field access on non-struct")
+ }
+ }
+ ast::ExprTupField(ref base_e, ref field) => {
+ span = field.span;
+ match ty::expr_ty_adjusted(tcx, base_e).sty {
+ ty::ty_struct(did, _) => {
+ ty::lookup_struct_fields(tcx, did)
+ .get(field.node)
+ .unwrap_or_else(|| {
+ tcx.sess.span_bug(field.span,
+ "stability::check_expr: unknown unnamed field access")
+ })
+ .id
+ }
+ ty::ty_tup(..) => return,
+ _ => tcx.sess.span_bug(e.span,
+ "stability::check_expr: unnamed field access on \
+ something other than a tuple or struct")
+ }
+ }
+ ast::ExprStruct(_, ref expr_fields, _) => {
+ let type_ = ty::expr_ty(tcx, e);
+ match type_.sty {
+ ty::ty_struct(did, _) => {
+ let struct_fields = ty::lookup_struct_fields(tcx, did);
+ // check the stability of each field that appears
+ // in the construction expression.
+ for field in expr_fields {
+ let did = struct_fields
+ .iter()
+ .find(|f| f.name == field.ident.node.name)
+ .unwrap_or_else(|| {
+ tcx.sess.span_bug(field.span,
+ "stability::check_expr: unknown named \
+ field access")
+ })
+ .id;
+ maybe_do_stability_check(tcx, did, field.span, cb);
+ }
+
+ // we're done.
+ return
+ }
+ // we don't look at stability attributes on
+ // struct-like enums (yet...), but it's definitely not
+ // a bug to have construct one.
+ ty::ty_enum(..) => return,
+ _ => {
+ tcx.sess.span_bug(e.span,
+ &format!("stability::check_expr: struct construction \
+ of non-struct, type {:?}",
+ type_.repr(tcx)));
+ }
+ }
+ }
_ => return
};
pub fn check_path(tcx: &ty::ctxt, path: &ast::Path, id: ast::NodeId,
cb: &mut FnMut(ast::DefId, Span, &Option<Stability>)) {
- let did = match tcx.def_map.borrow().get(&id) {
- Some(&def::DefPrimTy(..)) => return,
- Some(def) => def.def_id(),
- None => return
+ match tcx.def_map.borrow().get(&id).map(|d| d.full_def()) {
+ Some(def::DefPrimTy(..)) => {}
+ Some(def) => {
+ maybe_do_stability_check(tcx, def.def_id(), path.span, cb);
+ }
+ None => {}
+ }
+
+}
+
+pub fn check_pat(tcx: &ty::ctxt, pat: &ast::Pat,
+ cb: &mut FnMut(ast::DefId, Span, &Option<Stability>)) {
+ debug!("check_pat(pat = {:?})", pat);
+ if is_internal(tcx, pat.span) { return; }
+
+ let did = match ty::pat_ty_opt(tcx, pat) {
+ Some(&ty::TyS { sty: ty::ty_struct(did, _), .. }) => did,
+ Some(_) | None => return,
};
- maybe_do_stability_check(tcx, did, path.span, cb)
+ let struct_fields = ty::lookup_struct_fields(tcx, did);
+ match pat.node {
+ // Foo(a, b, c)
+ ast::PatEnum(_, Some(ref pat_fields)) => {
+ for (field, struct_field) in pat_fields.iter().zip(struct_fields.iter()) {
+ // a .. pattern is fine, but anything positional is
+ // not.
+ if let ast::PatWild(ast::PatWildMulti) = field.node {
+ continue
+ }
+ maybe_do_stability_check(tcx, struct_field.id, field.span, cb)
+ }
+ }
+ // Foo { a, b, c }
+ ast::PatStruct(_, ref pat_fields, _) => {
+ for field in pat_fields {
+ let did = struct_fields
+ .iter()
+ .find(|f| f.name == field.node.ident.name)
+ .unwrap_or_else(|| {
+ tcx.sess.span_bug(field.span,
+ "stability::check_pat: unknown named field access")
+ })
+ .id;
+ maybe_do_stability_check(tcx, did, field.span, cb);
+ }
+ }
+ // everything else is fine.
+ _ => {}
+ }
}
fn maybe_do_stability_check(tcx: &ty::ctxt, id: ast::DefId, span: Span,
b_def_id: ast::DefId)
-> bool
{
+ debug!("overlap(a_def_id={}, b_def_id={})",
+ a_def_id.repr(selcx.tcx()),
+ b_def_id.repr(selcx.tcx()));
+
let (a_trait_ref, a_obligations) = impl_trait_ref_and_oblig(selcx, a_def_id);
let (b_trait_ref, b_obligations) = impl_trait_ref_and_oblig(selcx, b_def_id);
+ debug!("overlap: a_trait_ref={}", a_trait_ref.repr(selcx.tcx()));
+ debug!("overlap: b_trait_ref={}", b_trait_ref.repr(selcx.tcx()));
+
// Does `a <: b` hold? If not, no overlap.
if let Err(_) = infer::mk_sub_poly_trait_refs(selcx.infcx(),
true,
return false;
}
+ debug!("overlap: subtraitref check succeeded");
+
// Are any of the obligations unsatisfiable? If so, no overlap.
- a_obligations.iter()
- .chain(b_obligations.iter())
- .all(|o| selcx.evaluate_obligation(o))
+ let opt_failing_obligation =
+ a_obligations.iter()
+ .chain(b_obligations.iter())
+ .find(|o| !selcx.evaluate_obligation(o));
+
+ if let Some(failing_obligation) = opt_failing_obligation {
+ debug!("overlap: obligation unsatisfiable {}", failing_obligation.repr(selcx.tcx()));
+ return false;
+ }
+
+ true
}
/// Instantiate fresh variables for all bound parameters of the impl
use middle::subst;
use middle::ty::{self, HasProjectionTypes, Ty};
use middle::ty_fold::TypeFoldable;
-use middle::infer::{self, InferCtxt};
+use middle::infer::{self, fixup_err_to_string, InferCtxt};
use std::slice::Iter;
use std::rc::Rc;
use syntax::ast;
}
}
+/// Normalizes the parameter environment, reporting errors if they occur.
pub fn normalize_param_env_or_error<'a,'tcx>(unnormalized_env: ty::ParameterEnvironment<'a,'tcx>,
cause: ObligationCause<'tcx>)
-> ty::ParameterEnvironment<'a,'tcx>
{
- match normalize_param_env(&unnormalized_env, cause) {
- Ok(p) => p,
+ // I'm not wild about reporting errors here; I'd prefer to
+ // have the errors get reported at a defined place (e.g.,
+ // during typeck). Instead I have all parameter
+ // environments, in effect, going through this function
+ // and hence potentially reporting errors. This ensurse of
+ // course that we never forget to normalize (the
+ // alternative seemed like it would involve a lot of
+ // manual invocations of this fn -- and then we'd have to
+ // deal with the errors at each of those sites).
+ //
+ // In any case, in practice, typeck constructs all the
+ // parameter environments once for every fn as it goes,
+ // and errors will get reported then; so after typeck we
+ // can be sure that no errors should occur.
+
+ let tcx = unnormalized_env.tcx;
+ let span = cause.span;
+ let body_id = cause.body_id;
+
+ debug!("normalize_param_env_or_error(unnormalized_env={})",
+ unnormalized_env.repr(tcx));
+
+ let infcx = infer::new_infer_ctxt(tcx);
+ let predicates = match fully_normalize(&infcx, &unnormalized_env, cause,
+ &unnormalized_env.caller_bounds) {
+ Ok(predicates) => predicates,
Err(errors) => {
- // I'm not wild about reporting errors here; I'd prefer to
- // have the errors get reported at a defined place (e.g.,
- // during typeck). Instead I have all parameter
- // environments, in effect, going through this function
- // and hence potentially reporting errors. This ensurse of
- // course that we never forget to normalize (the
- // alternative seemed like it would involve a lot of
- // manual invocations of this fn -- and then we'd have to
- // deal with the errors at each of those sites).
- //
- // In any case, in practice, typeck constructs all the
- // parameter environments once for every fn as it goes,
- // and errors will get reported then; so after typeck we
- // can be sure that no errors should occur.
- let infcx = infer::new_infer_ctxt(unnormalized_env.tcx);
report_fulfillment_errors(&infcx, &errors);
-
- // Normalized failed? use what they gave us, it's better than nothing.
- unnormalized_env
+ return unnormalized_env; // an unnormalized env is better than nothing
}
- }
-}
-
-pub fn normalize_param_env<'a,'tcx>(param_env: &ty::ParameterEnvironment<'a,'tcx>,
- cause: ObligationCause<'tcx>)
- -> Result<ty::ParameterEnvironment<'a,'tcx>,
- Vec<FulfillmentError<'tcx>>>
-{
- let tcx = param_env.tcx;
-
- debug!("normalize_param_env(param_env={})",
- param_env.repr(tcx));
+ };
- let infcx = infer::new_infer_ctxt(tcx);
- let predicates = try!(fully_normalize(&infcx, param_env, cause, ¶m_env.caller_bounds));
+ infcx.resolve_regions_and_report_errors(body_id);
+ let predicates = match infcx.fully_resolve(&predicates) {
+ Ok(predicates) => predicates,
+ Err(fixup_err) => {
+ // If we encounter a fixup error, it means that some type
+ // variable wound up unconstrained. I actually don't know
+ // if this can happen, and I certainly don't expect it to
+ // happen often, but if it did happen it probably
+ // represents a legitimate failure due to some kind of
+ // unconstrained variable, and it seems better not to ICE,
+ // all things considered.
+ let err_msg = fixup_err_to_string(fixup_err);
+ tcx.sess.span_err(span, &err_msg);
+ return unnormalized_env; // an unnormalized env is better than nothing
+ }
+ };
- debug!("normalize_param_env: predicates={}",
+ debug!("normalize_param_env_or_error: predicates={}",
predicates.repr(tcx));
- Ok(param_env.with_caller_bounds(predicates))
+ unnormalized_env.with_caller_bounds(predicates)
}
pub fn fully_normalize<'a,'tcx,T>(infcx: &InferCtxt<'a,'tcx>,
{
let tcx = closure_typer.tcx();
- debug!("normalize_param_env(value={})",
- value.repr(tcx));
+ debug!("normalize_param_env(value={})", value.repr(tcx));
let mut selcx = &mut SelectionContext::new(infcx, closure_typer);
let mut fulfill_cx = FulfillmentContext::new();
}
try!(fulfill_cx.select_all_or_error(infcx, closure_typer));
let resolved_value = infcx.resolve_type_vars_if_possible(&normalized_value);
- debug!("normalize_param_env: resolved_value={}",
- resolved_value.repr(tcx));
+ debug!("normalize_param_env: resolved_value={}", resolved_value.repr(tcx));
Ok(resolved_value)
}
let self_ty = self.infcx.shallow_resolve(obligation.predicate.0.self_ty());
return match self_ty.sty {
- ty::ty_infer(ty::IntVar(_)) |
- ty::ty_infer(ty::FloatVar(_)) |
- ty::ty_uint(_) |
- ty::ty_int(_) |
- ty::ty_bool |
- ty::ty_float(_) |
- ty::ty_bare_fn(..) |
- ty::ty_char => {
+ ty::ty_infer(ty::IntVar(_))
+ | ty::ty_infer(ty::FloatVar(_))
+ | ty::ty_uint(_)
+ | ty::ty_int(_)
+ | ty::ty_bool
+ | ty::ty_float(_)
+ | ty::ty_bare_fn(..)
+ | ty::ty_char => {
// safe for everything
Ok(If(Vec::new()))
}
ty::ty_uniq(_) => { // Box<T>
match bound {
- ty::BoundCopy => {
- Err(Unimplemented)
- }
+ ty::BoundCopy => Err(Unimplemented),
- ty::BoundSized => {
- Ok(If(Vec::new()))
- }
+ ty::BoundSized => Ok(If(Vec::new())),
ty::BoundSync | ty::BoundSend => {
self.tcx().sess.bug("Send/Sync shouldn't occur in builtin_bounds()");
ty::ty_ptr(..) => { // *const T, *mut T
match bound {
- ty::BoundCopy | ty::BoundSized => {
- Ok(If(Vec::new()))
- }
+ ty::BoundCopy | ty::BoundSized => Ok(If(Vec::new())),
ty::BoundSync | ty::BoundSend => {
self.tcx().sess.bug("Send/Sync shouldn't occur in builtin_bounds()");
ty::ty_trait(ref data) => {
match bound {
- ty::BoundSized => {
- Err(Unimplemented)
- }
+ ty::BoundSized => Err(Unimplemented),
ty::BoundCopy => {
if data.bounds.builtin_bounds.contains(&bound) {
Ok(If(Vec::new()))
ty::BoundCopy => {
match mutbl {
// &mut T is affine and hence never `Copy`
- ast::MutMutable => {
- Err(Unimplemented)
- }
+ ast::MutMutable => Err(Unimplemented),
// &T is always copyable
- ast::MutImmutable => {
- Ok(If(Vec::new()))
- }
+ ast::MutImmutable => Ok(If(Vec::new())),
}
}
- ty::BoundSized => {
- Ok(If(Vec::new()))
- }
+ ty::BoundSized => Ok(If(Vec::new())),
ty::BoundSync | ty::BoundSend => {
self.tcx().sess.bug("Send/Sync shouldn't occur in builtin_bounds()");
match bound {
ty::BoundCopy => {
match *len {
- Some(_) => {
- // [T, ..n] is copy iff T is copy
- Ok(If(vec![element_ty]))
- }
- None => {
- // [T] is unsized and hence affine
- Err(Unimplemented)
- }
+ // [T, ..n] is copy iff T is copy
+ Some(_) => Ok(If(vec![element_ty])),
+
+ // [T] is unsized and hence affine
+ None => Err(Unimplemented),
}
}
self.tcx().sess.bug("Send/Sync shouldn't occur in builtin_bounds()");
}
- ty::BoundCopy | ty::BoundSized => {
- Err(Unimplemented)
- }
+ ty::BoundCopy | ty::BoundSized => Err(Unimplemented),
}
}
- ty::ty_tup(ref tys) => {
- // (T1, ..., Tn) -- meets any bound that all of T1...Tn meet
- Ok(If(tys.clone()))
- }
+ // (T1, ..., Tn) -- meets any bound that all of T1...Tn meet
+ ty::ty_tup(ref tys) => Ok(If(tys.clone())),
ty::ty_closure(def_id, _, substs) => {
// FIXME -- This case is tricky. In the case of by-ref
}
match self.closure_typer.closure_upvars(def_id, substs) {
- Some(upvars) => {
- Ok(If(upvars.iter().map(|c| c.ty).collect()))
- }
+ Some(upvars) => Ok(If(upvars.iter().map(|c| c.ty).collect())),
None => {
debug!("assemble_builtin_bound_candidates: no upvar types available yet");
Ok(AmbiguousBuiltin)
nominal(bound, types)
}
- ty::ty_projection(_) |
- ty::ty_param(_) => {
+ ty::ty_projection(_) | ty::ty_param(_) => {
// Note: A type parameter is only considered to meet a
// particular bound if there is a where clause telling
// us that it does, and that case is handled by
Ok(AmbiguousBuiltin)
}
- ty::ty_err => {
- Ok(If(Vec::new()))
- }
+ ty::ty_err => Ok(If(Vec::new())),
- ty::ty_infer(ty::FreshTy(_)) |
- ty::ty_infer(ty::FreshIntTy(_)) => {
+ ty::ty_infer(ty::FreshTy(_))
+ | ty::ty_infer(ty::FreshIntTy(_)) => {
self.tcx().sess.bug(
&format!(
"asked to assemble builtin bounds of unexpected type: {}",
fn nominal<'cx, 'tcx>(bound: ty::BuiltinBound,
types: Vec<Ty<'tcx>>)
- -> Result<BuiltinBoundConditions<'tcx>,SelectionError<'tcx>>
+ -> Result<BuiltinBoundConditions<'tcx>, SelectionError<'tcx>>
{
// First check for markers and other nonsense.
match bound {
self.tcx().sess.bug(
&format!(
"asked to assemble constituent types of unexpected type: {}",
- t.repr(self.tcx()))[]);
+ t.repr(self.tcx())));
}
ty::ty_uniq(referent_ty) => { // Box<T>
}).collect::<Result<_, _>>();
let obligations = match obligations {
Ok(o) => o,
- Err(ErrorReported) => Vec::new()
+ Err(ErrorReported) => Vec::new(),
};
let obligations = VecPerParamSpace::new(obligations, Vec::new(), Vec::new());
let self_ty = self.infcx.shallow_resolve(obligation.predicate.0.self_ty());
match self.constituent_types_for_ty(self_ty) {
- Some(types) => {
- Ok(self.vtable_default_impl(obligation, impl_def_id, types))
- }
+ Some(types) => Ok(self.vtable_default_impl(obligation, impl_def_id, types)),
None => {
self.tcx().sess.bug(
&format!(
"asked to confirm default implementation for ambiguous type: {}",
- self_ty.repr(self.tcx()))[]);
+ self_ty.repr(self.tcx())));
}
}
}
{
match self.match_impl(impl_def_id, obligation, snapshot,
skol_map, skol_obligation_trait_ref) {
- Ok(substs) => {
- substs
- }
+ Ok(substs) => substs,
Err(()) => {
self.tcx().sess.bug(
&format!("Impl {} was matchable against {} but now is not",
skol_obligation_trait_ref.repr(self.tcx()));
let origin = infer::RelateOutputImplTypes(obligation.cause.span);
- match self.infcx.sub_trait_refs(false,
- origin,
- impl_trait_ref.value.clone(),
- skol_obligation_trait_ref) {
- Ok(()) => { }
- Err(e) => {
- debug!("match_impl: failed sub_trait_refs due to `{}`",
- ty::type_err_to_str(self.tcx(), &e));
- return Err(());
- }
+ if let Err(e) = self.infcx.sub_trait_refs(false,
+ origin,
+ impl_trait_ref.value.clone(),
+ skol_obligation_trait_ref) {
+ debug!("match_impl: failed sub_trait_refs due to `{}`",
+ ty::type_err_to_str(self.tcx(), &e));
+ return Err(());
}
- match self.infcx.leak_check(skol_map, snapshot) {
- Ok(()) => { }
- Err(e) => {
- debug!("match_impl: failed leak check due to `{}`",
- ty::type_err_to_str(self.tcx(), &e));
- return Err(());
- }
+ if let Err(e) = self.infcx.leak_check(skol_map, snapshot) {
+ debug!("match_impl: failed leak check due to `{}`",
+ ty::type_err_to_str(self.tcx(), &e));
+ return Err(());
}
debug!("match_impl: success impl_substs={}", impl_substs.repr(self.tcx()));
- Ok(Normalized { value: impl_substs,
- obligations: impl_trait_ref.obligations })
+ Ok(Normalized {
+ value: impl_substs,
+ obligations: impl_trait_ref.obligations
+ })
}
fn fast_reject_trait_refs(&mut self,
where_clause_trait_ref: ty::PolyTraitRef<'tcx>)
-> Result<Vec<PredicateObligation<'tcx>>,()>
{
- let () =
- try!(self.match_poly_trait_ref(obligation, where_clause_trait_ref));
-
+ try!(self.match_poly_trait_ref(obligation, where_clause_trait_ref));
Ok(Vec::new())
}
match self.tcx().trait_impls.borrow().get(&trait_def_id) {
None => Vec::new(),
- Some(impls) => impls.borrow().clone()
+ Some(impls) => impls.borrow().clone(),
}
}
DefaultImplCandidate(t) => format!("DefaultImplCandidate({:?})", t),
ProjectionCandidate => format!("ProjectionCandidate"),
FnPointerCandidate => format!("FnPointerCandidate"),
- ObjectCandidate => {
- format!("ObjectCandidate")
- }
+ ObjectCandidate => format!("ObjectCandidate"),
ClosureCandidate(c, ref s) => {
format!("ClosureCandidate({:?},{})", c, s.repr(tcx))
}
*self = o.previous;
Some(o)
}
- None => {
- None
- }
+ None => None
}
}
}
impl<'tcx> EvaluationResult<'tcx> {
fn may_apply(&self) -> bool {
match *self {
- EvaluatedToOk |
- EvaluatedToAmbig |
- EvaluatedToErr(Overflow) |
- EvaluatedToErr(OutputTypeParameterMismatch(..)) => {
- true
- }
- EvaluatedToErr(Unimplemented) => {
- false
- }
+ EvaluatedToOk
+ | EvaluatedToAmbig
+ | EvaluatedToErr(Overflow)
+ | EvaluatedToErr(OutputTypeParameterMismatch(..)) => true,
+ EvaluatedToErr(Unimplemented) => false,
}
}
}
use middle::resolve_lifetime;
use middle::infer;
use middle::stability;
-use middle::subst::{self, Subst, Substs, VecPerParamSpace};
+use middle::subst::{self, ParamSpace, Subst, Substs, VecPerParamSpace};
use middle::traits;
use middle::ty;
use middle::ty_fold::{self, TypeFoldable, TypeFolder};
pub impl_trait_cache: RefCell<DefIdMap<Option<Rc<ty::TraitRef<'tcx>>>>>,
- pub trait_refs: RefCell<NodeMap<Rc<TraitRef<'tcx>>>>,
+ pub impl_trait_refs: RefCell<NodeMap<Rc<TraitRef<'tcx>>>>,
pub trait_defs: RefCell<DefIdMap<Rc<TraitDef<'tcx>>>>,
/// Maps from the def-id of an item (trait/struct/enum/fn) to its
pub def_id: ast::DefId,
pub space: subst::ParamSpace,
pub index: u32,
- pub bounds: ParamBounds<'tcx>,
pub default: Option<Ty<'tcx>>,
pub object_lifetime_default: Option<ObjectLifetimeDefault>,
}
pub fn mk_ctxt<'tcx>(s: Session,
arenas: &'tcx CtxtArenas<'tcx>,
- dm: DefMap,
+ def_map: DefMap,
named_region_map: resolve_lifetime::NamedRegionMap,
map: ast_map::Map<'tcx>,
freevars: RefCell<FreevarMap>,
item_variance_map: RefCell::new(DefIdMap()),
variance_computed: Cell::new(false),
sess: s,
- def_map: dm,
+ def_map: def_map,
region_maps: region_maps,
node_types: RefCell::new(FnvHashMap()),
item_substs: RefCell::new(NodeMap()),
- trait_refs: RefCell::new(NodeMap()),
+ impl_trait_refs: RefCell::new(NodeMap()),
trait_defs: RefCell::new(DefIdMap()),
predicates: RefCell::new(DefIdMap()),
object_cast_map: RefCell::new(NodeMap()),
{
self.closure_tys.borrow()[def_id].subst(self, substs)
}
+
+ pub fn type_parameter_def(&self,
+ node_id: ast::NodeId)
+ -> TypeParameterDef<'tcx>
+ {
+ self.ty_param_defs.borrow()[node_id].clone()
+ }
}
// Interns a type/name combination, stores the resulting box in cx.interner,
_ => None,
}
}
+
+ pub fn is_param(&self, space: ParamSpace, index: u32) -> bool {
+ match self.sty {
+ ty::ty_param(ref data) => data.space == space && data.idx == index,
+ _ => false,
+ }
+ }
}
pub fn walk_ty<'tcx, F>(ty_root: Ty<'tcx>, mut f: F)
let types_a = substs_a.types.get_slice(subst::TypeSpace);
let types_b = substs_b.types.get_slice(subst::TypeSpace);
- let pairs = types_a.iter().zip(types_b.iter());
+ let mut pairs = types_a.iter().zip(types_b.iter());
pairs.all(|(&a, &b)| same_type(a, b))
}
}
}
-pub fn node_id_to_trait_ref<'tcx>(cx: &ctxt<'tcx>, id: ast::NodeId)
+pub fn impl_id_to_trait_ref<'tcx>(cx: &ctxt<'tcx>, id: ast::NodeId)
-> Rc<ty::TraitRef<'tcx>> {
- match cx.trait_refs.borrow().get(&id) {
+ match cx.impl_trait_refs.borrow().get(&id) {
Some(ty) => ty.clone(),
None => cx.sess.bug(
- &format!("node_id_to_trait_ref: no trait ref for node `{}`",
+ &format!("impl_id_to_trait_ref: no trait ref for impl `{}`",
cx.map.node_to_string(id)))
}
}
pub fn pat_ty<'tcx>(cx: &ctxt<'tcx>, pat: &ast::Pat) -> Ty<'tcx> {
return node_id_to_type(cx, pat.id);
}
+pub fn pat_ty_opt<'tcx>(cx: &ctxt<'tcx>, pat: &ast::Pat) -> Option<Ty<'tcx>> {
+ return node_id_to_type_opt(cx, pat.id);
+}
// Returns the type of an expression as a monotype.
pub fn resolve_expr(tcx: &ctxt, expr: &ast::Expr) -> def::Def {
match tcx.def_map.borrow().get(&expr.id) {
- Some(&def) => def,
+ Some(def) => def.full_def(),
None => {
tcx.sess.span_bug(expr.span, &format!(
"no def-map entry for expr {}", expr.id));
}
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
match resolve_expr(tcx, expr) {
def::DefVariant(tid, vid, _) => {
let variant_info = enum_variant_with_id(tcx, tid, vid);
def::DefFn(_, true) => RvalueDpsExpr,
// Fn pointers are just scalar values.
- def::DefFn(..) | def::DefStaticMethod(..) | def::DefMethod(..) => RvalueDatumExpr,
+ def::DefFn(..) | def::DefMethod(..) => RvalueDatumExpr,
// Note: there is actually a good case to be made that
// DefArg's, particularly those of immediate type, ought to
ast::ExprBox(Some(ref place), _) => {
// Special case `Box<T>` for now:
- let definition = match tcx.def_map.borrow().get(&place.id) {
- Some(&def) => def,
+ let def_id = match tcx.def_map.borrow().get(&place.id) {
+ Some(def) => def.def_id(),
None => panic!("no def for place"),
};
- let def_id = definition.def_id();
if tcx.lang_items.exchange_heap() == Some(def_id) {
RvalueDatumExpr
} else {
memoized(&cx.impl_trait_cache, id, |id: ast::DefId| {
if id.krate == ast::LOCAL_CRATE {
debug!("(impl_trait_ref) searching for trait impl {:?}", id);
- match cx.map.find(id.node) {
- Some(ast_map::NodeItem(item)) => {
- match item.node {
- ast::ItemImpl(_, _, _, ref opt_trait, _, _) => {
- match opt_trait {
- &Some(ref t) => {
- let trait_ref = ty::node_id_to_trait_ref(cx, t.ref_id);
- Some(trait_ref)
- }
- &None => None
- }
- }
- ast::ItemDefaultImpl(_, ref ast_trait_ref) => {
- Some(ty::node_id_to_trait_ref(cx, ast_trait_ref.ref_id))
- }
- _ => None
+ if let Some(ast_map::NodeItem(item)) = cx.map.find(id.node) {
+ match item.node {
+ ast::ItemImpl(_, _, _, Some(_), _, _) |
+ ast::ItemDefaultImpl(..) => {
+ Some(ty::impl_id_to_trait_ref(cx, id.node))
}
+ _ => None
}
- _ => None
+ } else {
+ None
}
} else {
csearch::get_impl_trait(cx, id)
}
pub fn trait_ref_to_def_id(tcx: &ctxt, tr: &ast::TraitRef) -> ast::DefId {
- let def = *tcx.def_map.borrow()
- .get(&tr.ref_id)
- .expect("no def-map entry for trait");
- def.def_id()
+ tcx.def_map.borrow().get(&tr.ref_id).expect("no def-map entry for trait").def_id()
}
pub fn try_add_builtin_trait(
}
Err(_) => {
let found = match count_expr.node {
- ast::ExprPath(ast::Path {
+ ast::ExprPath(None, ast::Path {
global: false,
ref segments,
..
def_id: self.def_id,
space: self.space,
index: self.index,
- bounds: self.bounds.fold_with(folder),
default: self.default.fold_with(folder),
object_lifetime_default: self.object_lifetime_default.fold_with(folder),
}
use plugin::registry::Registry;
use std::mem;
-use std::env;
+use std::os;
use std::dynamic_lib::DynamicLibrary;
use std::borrow::ToOwned;
use syntax::ast;
path: Path,
symbol: String) -> PluginRegistrarFun {
// Make sure the path contains a / or the linker will search for it.
- let path = env::current_dir().unwrap().join(&path);
+ let path = os::getcwd().unwrap().join(&path);
let lib = match DynamicLibrary::open(Some(&path)) {
Ok(lib) => lib,
pub test: bool,
pub parse_only: bool,
pub no_trans: bool,
+ pub treat_err_as_bug: bool,
pub no_analysis: bool,
pub debugging_opts: DebuggingOptions,
/// Whether to write dependency files. It's (enabled, optional filename).
test: false,
parse_only: false,
no_trans: false,
+ treat_err_as_bug: false,
no_analysis: false,
debugging_opts: basic_debugging_options(),
write_dependency_info: (false, None),
"Parse only; do not compile, assemble, or link"),
no_trans: bool = (false, parse_bool,
"Run all passes except translation; no output"),
+ treat_err_as_bug: bool = (false, parse_bool,
+ "Treat all errors that occur as bugs"),
no_analysis: bool = (false, parse_bool,
"Parse and expand the source, but run no analysis"),
extra_plugins: Vec<String> = (Vec::new(), parse_list,
let parse_only = debugging_opts.parse_only;
let no_trans = debugging_opts.no_trans;
+ let treat_err_as_bug = debugging_opts.treat_err_as_bug;
let no_analysis = debugging_opts.no_analysis;
if debugging_opts.debug_llvm {
test: test,
parse_only: parse_only,
no_trans: no_trans,
+ treat_err_as_bug: treat_err_as_bug,
no_analysis: no_analysis,
debugging_opts: debugging_opts,
write_dependency_info: write_dependency_info,
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
use lint;
use metadata::cstore::CStore;
use metadata::filesearch;
use rustc_back::target::Target;
-use std::env;
use std::cell::{Cell, RefCell};
+use std::os;
pub mod config;
pub mod search_paths;
self.diagnostic().handler().fatal(msg)
}
pub fn span_err(&self, sp: Span, msg: &str) {
+ if self.opts.treat_err_as_bug {
+ self.span_bug(sp, msg);
+ }
match split_msg_into_multilines(msg) {
Some(msg) => self.diagnostic().span_err(sp, &msg[..]),
None => self.diagnostic().span_err(sp, msg)
}
}
pub fn span_err_with_code(&self, sp: Span, msg: &str, code: &str) {
+ if self.opts.treat_err_as_bug {
+ self.span_bug(sp, msg);
+ }
match split_msg_into_multilines(msg) {
Some(msg) => self.diagnostic().span_err_with_code(sp, &msg[..], code),
None => self.diagnostic().span_err_with_code(sp, msg, code)
}
}
pub fn err(&self, msg: &str) {
+ if self.opts.treat_err_as_bug {
+ self.bug(msg);
+ }
self.diagnostic().handler().err(msg)
}
pub fn err_count(&self) -> uint {
if path.is_absolute() {
path.clone()
} else {
- env::current_dir().unwrap().join(&path)
+ os::getcwd().unwrap().join(&path)
}
);
plugin_registrar_fn: Cell::new(None),
default_sysroot: default_sysroot,
local_crate_source_file: local_crate_source_file,
- working_dir: env::current_dir().unwrap(),
+ working_dir: os::getcwd().unwrap(),
lint_store: RefCell::new(lint::LintStore::new()),
lints: RefCell::new(NodeMap()),
crate_types: RefCell::new(Vec::new()),
can_print_warnings: can_print_warnings
};
- sess.lint_store.borrow_mut().register_builtin(Some(&sess));
sess
}
use std::old_io::process::{Command, ProcessOutput};
use std::old_io::{fs, TempDir};
use std::old_io;
-use std::env;
+use std::os;
use std::str;
use syntax::diagnostic::Handler as ErrorHandler;
pub fn build(self) -> Archive<'a> {
// Get an absolute path to the destination, so `ar` will work even
// though we run it from `self.work_dir`.
- let abs_dst = env::current_dir().unwrap().join(&self.archive.dst);
+ let abs_dst = os::getcwd().unwrap().join(&self.archive.dst);
assert!(!abs_dst.is_relative());
let mut args = vec![&abs_dst];
let mut total_len = abs_dst.as_vec().len();
// First, extract the contents of the archive to a temporary directory.
// We don't unpack directly into `self.work_dir` due to the possibility
// of filename collisions.
- let archive = env::current_dir().unwrap().join(archive);
+ let archive = os::getcwd().unwrap().join(archive);
run_ar(self.archive.handler, &self.archive.maybe_ar_prog,
"x", Some(loc.path()), &[&archive]);
use std::old_io;
use std::old_io::fs;
-use std::env;
+use std::os;
/// Returns an absolute path in the filesystem that `path` points to. The
/// returned path does not contain any symlinks in its hierarchy.
pub fn realpath(original: &Path) -> old_io::IoResult<Path> {
static MAX_LINKS_FOLLOWED: uint = 256;
- let original = try!(env::current_dir()).join(original);
+ let original = try!(os::getcwd()).join(original);
// Right now lstat on windows doesn't work quite well
if cfg!(windows) {
#![feature(rustc_private)]
#![feature(staged_api)]
#![feature(env)]
+#![feature(path)]
extern crate syntax;
extern crate serialize;
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-
use std::collections::HashSet;
use std::env;
use std::old_io::IoError;
+use std::os;
use syntax::ast;
pub struct RPathConfig<F, G> where
"$ORIGIN"
};
- let cwd = env::current_dir().unwrap();
+ let cwd = os::getcwd().unwrap();
let mut lib = (config.realpath)(&cwd.join(lib)).unwrap();
lib.pop();
let mut output = (config.realpath)(&cwd.join(&config.out_filename)).unwrap();
let path = (config.get_install_prefix_lib_path)();
let path = env::current_dir().unwrap().join(&path);
// FIXME (#9639): This needs to handle non-utf8 paths
- path.as_str().expect("non-utf8 component in rpath").to_string()
+ path.to_str().expect("non-utf8 component in rpath").to_string()
}
fn minimize_rpaths(rpaths: &[String]) -> Vec<String> {
SawExprAssignOp(ast::BinOp_),
SawExprIndex,
SawExprRange,
- SawExprPath,
- SawExprQPath,
+ SawExprPath(Option<usize>),
SawExprAddrOf(ast::Mutability),
SawExprRet,
SawExprInlineAsm(&'a ast::InlineAsm),
ExprTupField(_, id) => SawExprTupField(id.node),
ExprIndex(..) => SawExprIndex,
ExprRange(..) => SawExprRange,
- ExprPath(..) => SawExprPath,
- ExprQPath(..) => SawExprQPath,
+ ExprPath(ref qself, _) => SawExprPath(qself.as_ref().map(|q| q.position)),
ExprAddrOf(m, _) => SawExprAddrOf(m),
ExprBreak(id) => SawExprBreak(id.map(content)),
ExprAgain(id) => SawExprAgain(id.map(content)),
/// JSON decoding.
pub fn search(target: &str) -> Result<Target, String> {
use std::env;
+ use std::os;
use std::ffi::OsString;
use std::old_io::File;
use std::old_path::Path;
// FIXME 16351: add a sane default search path?
- for dir in env::split_paths(&target_path) {
+ for dir in os::split_paths(target_path.to_str().unwrap()).iter() {
let p = dir.join(path.clone());
if p.is_file() {
return load_file(&p);
ast::ItemConst(_, ref ex) => {
gather_loans::gather_loans_in_static_initializer(this, &**ex);
}
- _ => {
- visit::walk_item(this, item);
- }
+ _ => { }
}
+
+ visit::walk_item(this, item);
}
/// Collection of conclusions determined via borrow checker analyses.
use serialize::json;
use std::env;
+use std::os;
use std::ffi::OsString;
use std::old_io::fs;
use std::old_io;
if cfg!(windows) {
_old_path = env::var_os("PATH").unwrap_or(_old_path);
let mut new_path = sess.host_filesearch(PathKind::All).get_dylib_search_paths();
- new_path.extend(env::split_paths(&_old_path));
+ new_path.extend(os::split_paths(_old_path.to_str().unwrap()).into_iter());
env::set_var("PATH", &env::join_paths(new_path.iter()).unwrap());
}
let features = sess.features.borrow();
export_map,
trait_map,
external_exports,
- last_private_map,
glob_map,
} =
time(time_passes, "resolution", (),
time(time_passes, "const checking", (), |_|
middle::check_const::check_crate(&ty_cx));
- let maps = (external_exports, last_private_map);
let (exported_items, public_items) =
- time(time_passes, "privacy checking", maps, |(a, b)|
- rustc_privacy::check_crate(&ty_cx, &export_map, a, b));
+ time(time_passes, "privacy checking", (), |_|
+ rustc_privacy::check_crate(&ty_cx, &export_map, external_exports));
// Do not move this check past lint
time(time_passes, "stability index", (), |_|
outputs: &OutputFilenames) {
let old_path = env::var_os("PATH").unwrap_or(OsString::from_str(""));
let mut new_path = sess.host_filesearch(PathKind::All).get_tools_search_paths();
- new_path.extend(env::split_paths(&old_path));
+ new_path.extend(os::split_paths(old_path.to_str().unwrap()).into_iter());
env::set_var("PATH", &env::join_paths(new_path.iter()).unwrap());
time(sess.time_passes(), "linking", (), |_|
extern crate rustc;
extern crate rustc_back;
extern crate rustc_borrowck;
+extern crate rustc_lint;
extern crate rustc_privacy;
extern crate rustc_resolve;
extern crate rustc_trans;
};
let mut sess = build_session(sopts, input_file_path, descriptions);
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
if sess.unstable_options() {
sess.opts.show_span = matches.opt_str("show-span");
}
0 => {
if sopts.describe_lints {
let mut ls = lint::LintStore::new();
- ls.register_builtin(None);
+ rustc_lint::register_builtins(&mut ls, None);
describe_lints(&ls, false);
return None;
}
let sess = build_session(sopts.clone(), None, descriptions.clone());
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
let should_stop = RustcDefaultCalls::print_crate_info(&sess, None, odir, ofile);
if should_stop == Compilation::Stop {
return None;
let result = run(env::args().collect());
std::env::set_exit_status(result as i32);
}
-
use diagnostic;
use diagnostic::Emitter;
use driver;
+use rustc_lint;
use rustc_resolve as resolve;
use rustc_typeck::middle::lang_items;
use rustc_typeck::middle::region::{self, CodeExtent, DestructionScopeData};
diagnostic::mk_span_handler(diagnostic_handler, codemap);
let sess = session::build_session_(options, None, span_diagnostic_handler);
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
let krate_config = Vec::new();
let input = config::Input::Str(source_string.to_string());
let krate = driver::phase_1_parse_input(&sess, krate_config, &input);
let tup2_ty = ty::mk_tup(tcx, vec!(tup1_ty, tup1_ty, uint_ty));
let uniq_ty = ty::mk_uniq(tcx, tup2_ty);
let walked: Vec<_> = uniq_ty.walk().collect();
- assert_eq!(vec!(uniq_ty,
- tup2_ty,
- tup1_ty, int_ty, uint_ty, int_ty, uint_ty,
- tup1_ty, int_ty, uint_ty, int_ty, uint_ty,
- uint_ty),
+ assert_eq!([uniq_ty,
+ tup2_ty,
+ tup1_ty, int_ty, uint_ty, int_ty, uint_ty,
+ tup1_ty, int_ty, uint_ty, int_ty, uint_ty,
+ uint_ty],
walked);
})
}
--- /dev/null
+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Lints in the Rust compiler.
+//!
+//! This contains lints which can feasibly be implemented as their own
+//! AST visitor. Also see `rustc::lint::builtin`, which contains the
+//! definitions of lints that are emitted directly inside the main
+//! compiler.
+//!
+//! To add a new lint to rustc, declare it here using `declare_lint!()`.
+//! Then add code to emit the new lint in the appropriate circumstances.
+//! You can do that in an existing `LintPass` if it makes sense, or in a
+//! new `LintPass`, or using `Session::add_lint` elsewhere in the
+//! compiler. Only do the latter if the check can't be written cleanly as a
+//! `LintPass` (also, note that such lints will need to be defined in
+//! `rustc::lint::builtin`, not here).
+//!
+//! If you define a new `LintPass`, you will also need to add it to the
+//! `add_builtin!` or `add_builtin_with_new!` invocation in `lib.rs`.
+//! Use the former for unit-like structs and the latter for structs with
+//! a `pub fn new()`.
+
+use self::MethodContext::*;
+
+use metadata::{csearch, decoder};
+use middle::def::*;
+use middle::subst::Substs;
+use middle::ty::{self, Ty};
+use middle::{def, pat_util, stability};
+use middle::const_eval::{eval_const_expr_partial, const_int, const_uint};
+use middle::cfg;
+use util::ppaux::{ty_to_string};
+use util::nodemap::{FnvHashMap, NodeSet};
+use lint::{Level, Context, LintPass, LintArray, Lint};
+
+use std::collections::BitSet;
+use std::collections::hash_map::Entry::{Occupied, Vacant};
+use std::num::SignedInt;
+use std::{cmp, slice};
+use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64};
+
+use syntax::{abi, ast, ast_map};
+use syntax::ast_util::is_shift_binop;
+use syntax::attr::{self, AttrMetaMethods};
+use syntax::codemap::{self, Span};
+use syntax::feature_gate::{KNOWN_ATTRIBUTES, AttributeType};
+use syntax::parse::token;
+use syntax::ast::{TyIs, TyUs, TyI8, TyU8, TyI16, TyU16, TyI32, TyU32, TyI64, TyU64};
+use syntax::ast_util;
+use syntax::ptr::P;
+use syntax::visit::{self, Visitor};
+
+// hardwired lints from librustc
+pub use lint::builtin::*;
+
+declare_lint! {
+ WHILE_TRUE,
+ Warn,
+ "suggest using `loop { }` instead of `while true { }`"
+}
+
+#[derive(Copy)]
+pub struct WhileTrue;
+
+impl LintPass for WhileTrue {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(WHILE_TRUE)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ if let ast::ExprWhile(ref cond, _, _) = e.node {
+ if let ast::ExprLit(ref lit) = cond.node {
+ if let ast::LitBool(true) = lit.node {
+ cx.span_lint(WHILE_TRUE, e.span,
+ "denote infinite loops with loop { ... }");
+ }
+ }
+ }
+ }
+}
+
+declare_lint! {
+ UNUSED_TYPECASTS,
+ Allow,
+ "detects unnecessary type casts that can be removed"
+}
+
+#[derive(Copy)]
+pub struct UnusedCasts;
+
+impl LintPass for UnusedCasts {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_TYPECASTS)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ if let ast::ExprCast(ref expr, ref ty) = e.node {
+ let t_t = ty::expr_ty(cx.tcx, e);
+ if ty::expr_ty(cx.tcx, &**expr) == t_t {
+ cx.span_lint(UNUSED_TYPECASTS, ty.span, "unnecessary type cast");
+ }
+ }
+ }
+}
+
+declare_lint! {
+ UNSIGNED_NEGATION,
+ Warn,
+ "using an unary minus operator on unsigned type"
+}
+
+declare_lint! {
+ UNUSED_COMPARISONS,
+ Warn,
+ "comparisons made useless by limits of the types involved"
+}
+
+declare_lint! {
+ OVERFLOWING_LITERALS,
+ Warn,
+ "literal out of range for its type"
+}
+
+declare_lint! {
+ EXCEEDING_BITSHIFTS,
+ Deny,
+ "shift exceeds the type's number of bits"
+}
+
+#[derive(Copy)]
+pub struct TypeLimits {
+ /// Id of the last visited negated expression
+ negated_expr_id: ast::NodeId,
+}
+
+impl TypeLimits {
+ pub fn new() -> TypeLimits {
+ TypeLimits {
+ negated_expr_id: -1,
+ }
+ }
+}
+
+impl LintPass for TypeLimits {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNSIGNED_NEGATION, UNUSED_COMPARISONS, OVERFLOWING_LITERALS,
+ EXCEEDING_BITSHIFTS)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ match e.node {
+ ast::ExprUnary(ast::UnNeg, ref expr) => {
+ match expr.node {
+ ast::ExprLit(ref lit) => {
+ match lit.node {
+ ast::LitInt(_, ast::UnsignedIntLit(_)) => {
+ cx.span_lint(UNSIGNED_NEGATION, e.span,
+ "negation of unsigned int literal may \
+ be unintentional");
+ },
+ _ => ()
+ }
+ },
+ _ => {
+ let t = ty::expr_ty(cx.tcx, &**expr);
+ match t.sty {
+ ty::ty_uint(_) => {
+ cx.span_lint(UNSIGNED_NEGATION, e.span,
+ "negation of unsigned int variable may \
+ be unintentional");
+ },
+ _ => ()
+ }
+ }
+ };
+ // propagate negation, if the negation itself isn't negated
+ if self.negated_expr_id != e.id {
+ self.negated_expr_id = expr.id;
+ }
+ },
+ ast::ExprParen(ref expr) if self.negated_expr_id == e.id => {
+ self.negated_expr_id = expr.id;
+ },
+ ast::ExprBinary(binop, ref l, ref r) => {
+ if is_comparison(binop) && !check_limits(cx.tcx, binop, &**l, &**r) {
+ cx.span_lint(UNUSED_COMPARISONS, e.span,
+ "comparison is useless due to type limits");
+ }
+
+ if is_shift_binop(binop.node) {
+ let opt_ty_bits = match ty::expr_ty(cx.tcx, &**l).sty {
+ ty::ty_int(t) => Some(int_ty_bits(t, cx.sess().target.int_type)),
+ ty::ty_uint(t) => Some(uint_ty_bits(t, cx.sess().target.uint_type)),
+ _ => None
+ };
+
+ if let Some(bits) = opt_ty_bits {
+ let exceeding = if let ast::ExprLit(ref lit) = r.node {
+ if let ast::LitInt(shift, _) = lit.node { shift >= bits }
+ else { false }
+ } else {
+ match eval_const_expr_partial(cx.tcx, &**r, Some(cx.tcx.types.uint)) {
+ Ok(const_int(shift)) => { shift as u64 >= bits },
+ Ok(const_uint(shift)) => { shift >= bits },
+ _ => { false }
+ }
+ };
+ if exceeding {
+ cx.span_lint(EXCEEDING_BITSHIFTS, e.span,
+ "bitshift exceeds the type's number of bits");
+ }
+ };
+ }
+ },
+ ast::ExprLit(ref lit) => {
+ match ty::expr_ty(cx.tcx, e).sty {
+ ty::ty_int(t) => {
+ match lit.node {
+ ast::LitInt(v, ast::SignedIntLit(_, ast::Plus)) |
+ ast::LitInt(v, ast::UnsuffixedIntLit(ast::Plus)) => {
+ let int_type = if let ast::TyIs(_) = t {
+ cx.sess().target.int_type
+ } else { t };
+ let (min, max) = int_ty_range(int_type);
+ let negative = self.negated_expr_id == e.id;
+
+ if (negative && v > (min.abs() as u64)) ||
+ (!negative && v > (max.abs() as u64)) {
+ cx.span_lint(OVERFLOWING_LITERALS, e.span,
+ &*format!("literal out of range for {:?}", t));
+ return;
+ }
+ }
+ _ => panic!()
+ };
+ },
+ ty::ty_uint(t) => {
+ let uint_type = if let ast::TyUs(_) = t {
+ cx.sess().target.uint_type
+ } else { t };
+ let (min, max) = uint_ty_range(uint_type);
+ let lit_val: u64 = match lit.node {
+ ast::LitByte(_v) => return, // _v is u8, within range by definition
+ ast::LitInt(v, _) => v,
+ _ => panic!()
+ };
+ if lit_val < min || lit_val > max {
+ cx.span_lint(OVERFLOWING_LITERALS, e.span,
+ &*format!("literal out of range for {:?}", t));
+ }
+ },
+ ty::ty_float(t) => {
+ let (min, max) = float_ty_range(t);
+ let lit_val: f64 = match lit.node {
+ ast::LitFloat(ref v, _) |
+ ast::LitFloatUnsuffixed(ref v) => {
+ match v.parse().ok() {
+ Some(f) => f,
+ None => return
+ }
+ }
+ _ => panic!()
+ };
+ if lit_val < min || lit_val > max {
+ cx.span_lint(OVERFLOWING_LITERALS, e.span,
+ &*format!("literal out of range for {:?}", t));
+ }
+ },
+ _ => ()
+ };
+ },
+ _ => ()
+ };
+
+ fn is_valid<T:cmp::PartialOrd>(binop: ast::BinOp, v: T,
+ min: T, max: T) -> bool {
+ match binop.node {
+ ast::BiLt => v > min && v <= max,
+ ast::BiLe => v >= min && v < max,
+ ast::BiGt => v >= min && v < max,
+ ast::BiGe => v > min && v <= max,
+ ast::BiEq | ast::BiNe => v >= min && v <= max,
+ _ => panic!()
+ }
+ }
+
+ fn rev_binop(binop: ast::BinOp) -> ast::BinOp {
+ codemap::respan(binop.span, match binop.node {
+ ast::BiLt => ast::BiGt,
+ ast::BiLe => ast::BiGe,
+ ast::BiGt => ast::BiLt,
+ ast::BiGe => ast::BiLe,
+ _ => return binop
+ })
+ }
+
+ // for int & uint, be conservative with the warnings, so that the
+ // warnings are consistent between 32- and 64-bit platforms
+ fn int_ty_range(int_ty: ast::IntTy) -> (i64, i64) {
+ match int_ty {
+ ast::TyIs(_) => (i64::MIN, i64::MAX),
+ ast::TyI8 => (i8::MIN as i64, i8::MAX as i64),
+ ast::TyI16 => (i16::MIN as i64, i16::MAX as i64),
+ ast::TyI32 => (i32::MIN as i64, i32::MAX as i64),
+ ast::TyI64 => (i64::MIN, i64::MAX)
+ }
+ }
+
+ fn uint_ty_range(uint_ty: ast::UintTy) -> (u64, u64) {
+ match uint_ty {
+ ast::TyUs(_) => (u64::MIN, u64::MAX),
+ ast::TyU8 => (u8::MIN as u64, u8::MAX as u64),
+ ast::TyU16 => (u16::MIN as u64, u16::MAX as u64),
+ ast::TyU32 => (u32::MIN as u64, u32::MAX as u64),
+ ast::TyU64 => (u64::MIN, u64::MAX)
+ }
+ }
+
+ fn float_ty_range(float_ty: ast::FloatTy) -> (f64, f64) {
+ match float_ty {
+ ast::TyF32 => (f32::MIN as f64, f32::MAX as f64),
+ ast::TyF64 => (f64::MIN, f64::MAX)
+ }
+ }
+
+ fn int_ty_bits(int_ty: ast::IntTy, target_int_ty: ast::IntTy) -> u64 {
+ match int_ty {
+ ast::TyIs(_) => int_ty_bits(target_int_ty, target_int_ty),
+ ast::TyI8 => i8::BITS as u64,
+ ast::TyI16 => i16::BITS as u64,
+ ast::TyI32 => i32::BITS as u64,
+ ast::TyI64 => i64::BITS as u64
+ }
+ }
+
+ fn uint_ty_bits(uint_ty: ast::UintTy, target_uint_ty: ast::UintTy) -> u64 {
+ match uint_ty {
+ ast::TyUs(_) => uint_ty_bits(target_uint_ty, target_uint_ty),
+ ast::TyU8 => u8::BITS as u64,
+ ast::TyU16 => u16::BITS as u64,
+ ast::TyU32 => u32::BITS as u64,
+ ast::TyU64 => u64::BITS as u64
+ }
+ }
+
+ fn check_limits(tcx: &ty::ctxt, binop: ast::BinOp,
+ l: &ast::Expr, r: &ast::Expr) -> bool {
+ let (lit, expr, swap) = match (&l.node, &r.node) {
+ (&ast::ExprLit(_), _) => (l, r, true),
+ (_, &ast::ExprLit(_)) => (r, l, false),
+ _ => return true
+ };
+ // Normalize the binop so that the literal is always on the RHS in
+ // the comparison
+ let norm_binop = if swap { rev_binop(binop) } else { binop };
+ match ty::expr_ty(tcx, expr).sty {
+ ty::ty_int(int_ty) => {
+ let (min, max) = int_ty_range(int_ty);
+ let lit_val: i64 = match lit.node {
+ ast::ExprLit(ref li) => match li.node {
+ ast::LitInt(v, ast::SignedIntLit(_, ast::Plus)) |
+ ast::LitInt(v, ast::UnsuffixedIntLit(ast::Plus)) => v as i64,
+ ast::LitInt(v, ast::SignedIntLit(_, ast::Minus)) |
+ ast::LitInt(v, ast::UnsuffixedIntLit(ast::Minus)) => -(v as i64),
+ _ => return true
+ },
+ _ => panic!()
+ };
+ is_valid(norm_binop, lit_val, min, max)
+ }
+ ty::ty_uint(uint_ty) => {
+ let (min, max): (u64, u64) = uint_ty_range(uint_ty);
+ let lit_val: u64 = match lit.node {
+ ast::ExprLit(ref li) => match li.node {
+ ast::LitInt(v, _) => v,
+ _ => return true
+ },
+ _ => panic!()
+ };
+ is_valid(norm_binop, lit_val, min, max)
+ }
+ _ => true
+ }
+ }
+
+ fn is_comparison(binop: ast::BinOp) -> bool {
+ match binop.node {
+ ast::BiEq | ast::BiLt | ast::BiLe |
+ ast::BiNe | ast::BiGe | ast::BiGt => true,
+ _ => false
+ }
+ }
+ }
+}
+
+declare_lint! {
+ IMPROPER_CTYPES,
+ Warn,
+ "proper use of libc types in foreign modules"
+}
+
+struct ImproperCTypesVisitor<'a, 'tcx: 'a> {
+ cx: &'a Context<'a, 'tcx>
+}
+
+impl<'a, 'tcx> ImproperCTypesVisitor<'a, 'tcx> {
+ fn check_def(&mut self, sp: Span, id: ast::NodeId) {
+ match self.cx.tcx.def_map.borrow()[id].full_def() {
+ def::DefPrimTy(ast::TyInt(ast::TyIs(_))) => {
+ self.cx.span_lint(IMPROPER_CTYPES, sp,
+ "found rust type `isize` in foreign module, while \
+ libc::c_int or libc::c_long should be used");
+ }
+ def::DefPrimTy(ast::TyUint(ast::TyUs(_))) => {
+ self.cx.span_lint(IMPROPER_CTYPES, sp,
+ "found rust type `usize` in foreign module, while \
+ libc::c_uint or libc::c_ulong should be used");
+ }
+ def::DefTy(..) => {
+ let tty = match self.cx.tcx.ast_ty_to_ty_cache.borrow().get(&id) {
+ Some(&ty::atttce_resolved(t)) => t,
+ _ => panic!("ast_ty_to_ty_cache was incomplete after typeck!")
+ };
+
+ if !ty::is_ffi_safe(self.cx.tcx, tty) {
+ self.cx.span_lint(IMPROPER_CTYPES, sp,
+ "found type without foreign-function-safe
+ representation annotation in foreign module, consider \
+ adding a #[repr(...)] attribute to the type");
+ }
+ }
+ _ => ()
+ }
+ }
+}
+
+impl<'a, 'tcx, 'v> Visitor<'v> for ImproperCTypesVisitor<'a, 'tcx> {
+ fn visit_ty(&mut self, ty: &ast::Ty) {
+ if let ast::TyPath(..) = ty.node {
+ self.check_def(ty.span, ty.id);
+ }
+ visit::walk_ty(self, ty);
+ }
+}
+
+#[derive(Copy)]
+pub struct ImproperCTypes;
+
+impl LintPass for ImproperCTypes {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(IMPROPER_CTYPES)
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ fn check_ty(cx: &Context, ty: &ast::Ty) {
+ let mut vis = ImproperCTypesVisitor { cx: cx };
+ vis.visit_ty(ty);
+ }
+
+ fn check_foreign_fn(cx: &Context, decl: &ast::FnDecl) {
+ for input in &decl.inputs {
+ check_ty(cx, &*input.ty);
+ }
+ if let ast::Return(ref ret_ty) = decl.output {
+ check_ty(cx, &**ret_ty);
+ }
+ }
+
+ match it.node {
+ ast::ItemForeignMod(ref nmod) if nmod.abi != abi::RustIntrinsic => {
+ for ni in &nmod.items {
+ match ni.node {
+ ast::ForeignItemFn(ref decl, _) => check_foreign_fn(cx, &**decl),
+ ast::ForeignItemStatic(ref t, _) => check_ty(cx, &**t)
+ }
+ }
+ }
+ _ => (),
+ }
+ }
+}
+
+declare_lint! {
+ BOX_POINTERS,
+ Allow,
+ "use of owned (Box type) heap memory"
+}
+
+#[derive(Copy)]
+pub struct BoxPointers;
+
+impl BoxPointers {
+ fn check_heap_type<'a, 'tcx>(&self, cx: &Context<'a, 'tcx>,
+ span: Span, ty: Ty<'tcx>) {
+ let mut n_uniq: usize = 0;
+ ty::fold_ty(cx.tcx, ty, |t| {
+ match t.sty {
+ ty::ty_uniq(_) => {
+ n_uniq += 1;
+ }
+ _ => ()
+ };
+ t
+ });
+
+ if n_uniq > 0 {
+ let s = ty_to_string(cx.tcx, ty);
+ let m = format!("type uses owned (Box type) pointers: {}", s);
+ cx.span_lint(BOX_POINTERS, span, &m[..]);
+ }
+ }
+}
+
+impl LintPass for BoxPointers {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(BOX_POINTERS)
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ match it.node {
+ ast::ItemFn(..) |
+ ast::ItemTy(..) |
+ ast::ItemEnum(..) |
+ ast::ItemStruct(..) =>
+ self.check_heap_type(cx, it.span,
+ ty::node_id_to_type(cx.tcx, it.id)),
+ _ => ()
+ }
+
+ // If it's a struct, we also have to check the fields' types
+ match it.node {
+ ast::ItemStruct(ref struct_def, _) => {
+ for struct_field in &struct_def.fields {
+ self.check_heap_type(cx, struct_field.span,
+ ty::node_id_to_type(cx.tcx, struct_field.node.id));
+ }
+ }
+ _ => ()
+ }
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ let ty = ty::expr_ty(cx.tcx, e);
+ self.check_heap_type(cx, e.span, ty);
+ }
+}
+
+declare_lint! {
+ RAW_POINTER_DERIVE,
+ Warn,
+ "uses of #[derive] with raw pointers are rarely correct"
+}
+
+struct RawPtrDeriveVisitor<'a, 'tcx: 'a> {
+ cx: &'a Context<'a, 'tcx>
+}
+
+impl<'a, 'tcx, 'v> Visitor<'v> for RawPtrDeriveVisitor<'a, 'tcx> {
+ fn visit_ty(&mut self, ty: &ast::Ty) {
+ static MSG: &'static str = "use of `#[derive]` with a raw pointer";
+ if let ast::TyPtr(..) = ty.node {
+ self.cx.span_lint(RAW_POINTER_DERIVE, ty.span, MSG);
+ }
+ visit::walk_ty(self, ty);
+ }
+ // explicit override to a no-op to reduce code bloat
+ fn visit_expr(&mut self, _: &ast::Expr) {}
+ fn visit_block(&mut self, _: &ast::Block) {}
+}
+
+pub struct RawPointerDerive {
+ checked_raw_pointers: NodeSet,
+}
+
+impl RawPointerDerive {
+ pub fn new() -> RawPointerDerive {
+ RawPointerDerive {
+ checked_raw_pointers: NodeSet(),
+ }
+ }
+}
+
+impl LintPass for RawPointerDerive {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(RAW_POINTER_DERIVE)
+ }
+
+ fn check_item(&mut self, cx: &Context, item: &ast::Item) {
+ if !attr::contains_name(&item.attrs, "automatically_derived") {
+ return
+ }
+ let did = match item.node {
+ ast::ItemImpl(_, _, _, ref t_ref_opt, _, _) => {
+ // Deriving the Copy trait does not cause a warning
+ if let &Some(ref trait_ref) = t_ref_opt {
+ let def_id = ty::trait_ref_to_def_id(cx.tcx, trait_ref);
+ if Some(def_id) == cx.tcx.lang_items.copy_trait() {
+ return
+ }
+ }
+
+ match ty::node_id_to_type(cx.tcx, item.id).sty {
+ ty::ty_enum(did, _) => did,
+ ty::ty_struct(did, _) => did,
+ _ => return,
+ }
+ }
+ _ => return,
+ };
+ if !ast_util::is_local(did) { return }
+ let item = match cx.tcx.map.find(did.node) {
+ Some(ast_map::NodeItem(item)) => item,
+ _ => return,
+ };
+ if !self.checked_raw_pointers.insert(item.id) { return }
+ match item.node {
+ ast::ItemStruct(..) | ast::ItemEnum(..) => {
+ let mut visitor = RawPtrDeriveVisitor { cx: cx };
+ visit::walk_item(&mut visitor, &*item);
+ }
+ _ => {}
+ }
+ }
+}
+
+declare_lint! {
+ UNUSED_ATTRIBUTES,
+ Warn,
+ "detects attributes that were not used by the compiler"
+}
+
+#[derive(Copy)]
+pub struct UnusedAttributes;
+
+impl LintPass for UnusedAttributes {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_ATTRIBUTES)
+ }
+
+ fn check_attribute(&mut self, cx: &Context, attr: &ast::Attribute) {
+ for &(ref name, ty) in KNOWN_ATTRIBUTES {
+ match ty {
+ AttributeType::Whitelisted
+ | AttributeType::Gated(_, _) if attr.check_name(name) => {
+ break;
+ },
+ _ => ()
+ }
+ }
+
+ if !attr::is_used(attr) {
+ cx.span_lint(UNUSED_ATTRIBUTES, attr.span, "unused attribute");
+ if KNOWN_ATTRIBUTES.contains(&(&attr.name(), AttributeType::CrateLevel)) {
+ let msg = match attr.node.style {
+ ast::AttrOuter => "crate-level attribute should be an inner \
+ attribute: add an exclamation mark: #![foo]",
+ ast::AttrInner => "crate-level attribute should be in the \
+ root module",
+ };
+ cx.span_lint(UNUSED_ATTRIBUTES, attr.span, msg);
+ }
+ }
+ }
+}
+
+declare_lint! {
+ pub PATH_STATEMENTS,
+ Warn,
+ "path statements with no effect"
+}
+
+#[derive(Copy)]
+pub struct PathStatements;
+
+impl LintPass for PathStatements {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(PATH_STATEMENTS)
+ }
+
+ fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
+ match s.node {
+ ast::StmtSemi(ref expr, _) => {
+ match expr.node {
+ ast::ExprPath(..) => cx.span_lint(PATH_STATEMENTS, s.span,
+ "path statement with no effect"),
+ _ => ()
+ }
+ }
+ _ => ()
+ }
+ }
+}
+
+declare_lint! {
+ pub UNUSED_MUST_USE,
+ Warn,
+ "unused result of a type flagged as #[must_use]"
+}
+
+declare_lint! {
+ pub UNUSED_RESULTS,
+ Allow,
+ "unused result of an expression in a statement"
+}
+
+#[derive(Copy)]
+pub struct UnusedResults;
+
+impl LintPass for UnusedResults {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_MUST_USE, UNUSED_RESULTS)
+ }
+
+ fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
+ let expr = match s.node {
+ ast::StmtSemi(ref expr, _) => &**expr,
+ _ => return
+ };
+
+ if let ast::ExprRet(..) = expr.node {
+ return;
+ }
+
+ let t = ty::expr_ty(cx.tcx, expr);
+ let mut warned = false;
+ match t.sty {
+ ty::ty_tup(ref tys) if tys.is_empty() => return,
+ ty::ty_bool => return,
+ ty::ty_struct(did, _) |
+ ty::ty_enum(did, _) => {
+ if ast_util::is_local(did) {
+ if let ast_map::NodeItem(it) = cx.tcx.map.get(did.node) {
+ warned |= check_must_use(cx, &it.attrs, s.span);
+ }
+ } else {
+ let attrs = csearch::get_item_attrs(&cx.sess().cstore, did);
+ warned |= check_must_use(cx, &attrs[..], s.span);
+ }
+ }
+ _ => {}
+ }
+ if !warned {
+ cx.span_lint(UNUSED_RESULTS, s.span, "unused result");
+ }
+
+ fn check_must_use(cx: &Context, attrs: &[ast::Attribute], sp: Span) -> bool {
+ for attr in attrs {
+ if attr.check_name("must_use") {
+ let mut msg = "unused result which must be used".to_string();
+ // check for #[must_use="..."]
+ match attr.value_str() {
+ None => {}
+ Some(s) => {
+ msg.push_str(": ");
+ msg.push_str(&s);
+ }
+ }
+ cx.span_lint(UNUSED_MUST_USE, sp, &msg);
+ return true;
+ }
+ }
+ false
+ }
+ }
+}
+
+declare_lint! {
+ pub NON_CAMEL_CASE_TYPES,
+ Warn,
+ "types, variants, traits and type parameters should have camel case names"
+}
+
+#[derive(Copy)]
+pub struct NonCamelCaseTypes;
+
+impl NonCamelCaseTypes {
+ fn check_case(&self, cx: &Context, sort: &str, ident: ast::Ident, span: Span) {
+ fn is_camel_case(ident: ast::Ident) -> bool {
+ let ident = token::get_ident(ident);
+ if ident.is_empty() { return true; }
+ let ident = ident.trim_matches('_');
+
+ // start with a non-lowercase letter rather than non-uppercase
+ // ones (some scripts don't have a concept of upper/lowercase)
+ ident.len() > 0 && !ident.char_at(0).is_lowercase() && !ident.contains('_')
+ }
+
+ fn to_camel_case(s: &str) -> String {
+ s.split('_').flat_map(|word| word.chars().enumerate().map(|(i, c)|
+ if i == 0 { c.to_uppercase() }
+ else { c }
+ )).collect()
+ }
+
+ let s = token::get_ident(ident);
+
+ if !is_camel_case(ident) {
+ let c = to_camel_case(&s);
+ let m = if c.is_empty() {
+ format!("{} `{}` should have a camel case name such as `CamelCase`", sort, s)
+ } else {
+ format!("{} `{}` should have a camel case name such as `{}`", sort, s, c)
+ };
+ cx.span_lint(NON_CAMEL_CASE_TYPES, span, &m[..]);
+ }
+ }
+}
+
+impl LintPass for NonCamelCaseTypes {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(NON_CAMEL_CASE_TYPES)
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ let has_extern_repr = it.attrs.iter().map(|attr| {
+ attr::find_repr_attrs(cx.tcx.sess.diagnostic(), attr).iter()
+ .any(|r| r == &attr::ReprExtern)
+ }).any(|x| x);
+ if has_extern_repr { return }
+
+ match it.node {
+ ast::ItemTy(..) | ast::ItemStruct(..) => {
+ self.check_case(cx, "type", it.ident, it.span)
+ }
+ ast::ItemTrait(..) => {
+ self.check_case(cx, "trait", it.ident, it.span)
+ }
+ ast::ItemEnum(ref enum_definition, _) => {
+ if has_extern_repr { return }
+ self.check_case(cx, "type", it.ident, it.span);
+ for variant in &enum_definition.variants {
+ self.check_case(cx, "variant", variant.node.name, variant.span);
+ }
+ }
+ _ => ()
+ }
+ }
+
+ fn check_generics(&mut self, cx: &Context, it: &ast::Generics) {
+ for gen in &*it.ty_params {
+ self.check_case(cx, "type parameter", gen.ident, gen.span);
+ }
+ }
+}
+
+#[derive(PartialEq)]
+enum MethodContext {
+ TraitDefaultImpl,
+ TraitImpl,
+ PlainImpl
+}
+
+fn method_context(cx: &Context, m: &ast::Method) -> MethodContext {
+ let did = ast::DefId {
+ krate: ast::LOCAL_CRATE,
+ node: m.id
+ };
+
+ match cx.tcx.impl_or_trait_items.borrow().get(&did).cloned() {
+ None => cx.sess().span_bug(m.span, "missing method descriptor?!"),
+ Some(md) => {
+ match md {
+ ty::MethodTraitItem(md) => {
+ match md.container {
+ ty::TraitContainer(..) => TraitDefaultImpl,
+ ty::ImplContainer(cid) => {
+ match ty::impl_trait_ref(cx.tcx, cid) {
+ Some(..) => TraitImpl,
+ None => PlainImpl
+ }
+ }
+ }
+ }
+ ty::TypeTraitItem(typedef) => {
+ match typedef.container {
+ ty::TraitContainer(..) => TraitDefaultImpl,
+ ty::ImplContainer(cid) => {
+ match ty::impl_trait_ref(cx.tcx, cid) {
+ Some(..) => TraitImpl,
+ None => PlainImpl
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+declare_lint! {
+ pub NON_SNAKE_CASE,
+ Warn,
+ "methods, functions, lifetime parameters and modules should have snake case names"
+}
+
+#[derive(Copy)]
+pub struct NonSnakeCase;
+
+impl NonSnakeCase {
+ fn to_snake_case(mut str: &str) -> String {
+ let mut words = vec![];
+ // Preserve leading underscores
+ str = str.trim_left_matches(|c: char| {
+ if c == '_' {
+ words.push(String::new());
+ true
+ } else { false }
+ });
+ for s in str.split('_') {
+ let mut last_upper = false;
+ let mut buf = String::new();
+ if s.is_empty() { continue; }
+ for ch in s.chars() {
+ if !buf.is_empty() && buf != "'"
+ && ch.is_uppercase()
+ && !last_upper {
+ words.push(buf);
+ buf = String::new();
+ }
+ last_upper = ch.is_uppercase();
+ buf.push(ch.to_lowercase());
+ }
+ words.push(buf);
+ }
+ words.connect("_")
+ }
+
+ fn check_snake_case(&self, cx: &Context, sort: &str, ident: ast::Ident, span: Span) {
+ fn is_snake_case(ident: ast::Ident) -> bool {
+ let ident = token::get_ident(ident);
+ if ident.is_empty() { return true; }
+ let ident = ident.trim_left_matches('\'');
+ let ident = ident.trim_matches('_');
+
+ let mut allow_underscore = true;
+ ident.chars().all(|c| {
+ allow_underscore = match c {
+ '_' if !allow_underscore => return false,
+ '_' => false,
+ c if !c.is_uppercase() => true,
+ _ => return false,
+ };
+ true
+ })
+ }
+
+ let s = token::get_ident(ident);
+
+ if !is_snake_case(ident) {
+ let sc = NonSnakeCase::to_snake_case(&s);
+ if sc != &s[..] {
+ cx.span_lint(NON_SNAKE_CASE, span,
+ &*format!("{} `{}` should have a snake case name such as `{}`",
+ sort, s, sc));
+ } else {
+ cx.span_lint(NON_SNAKE_CASE, span,
+ &*format!("{} `{}` should have a snake case name",
+ sort, s));
+ }
+ }
+ }
+}
+
+impl LintPass for NonSnakeCase {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(NON_SNAKE_CASE)
+ }
+
+ fn check_fn(&mut self, cx: &Context,
+ fk: visit::FnKind, _: &ast::FnDecl,
+ _: &ast::Block, span: Span, _: ast::NodeId) {
+ match fk {
+ visit::FkMethod(ident, _, m) => match method_context(cx, m) {
+ PlainImpl
+ => self.check_snake_case(cx, "method", ident, span),
+ TraitDefaultImpl
+ => self.check_snake_case(cx, "trait method", ident, span),
+ _ => (),
+ },
+ visit::FkItemFn(ident, _, _, _)
+ => self.check_snake_case(cx, "function", ident, span),
+ _ => (),
+ }
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ if let ast::ItemMod(_) = it.node {
+ self.check_snake_case(cx, "module", it.ident, it.span);
+ }
+ }
+
+ fn check_ty_method(&mut self, cx: &Context, t: &ast::TypeMethod) {
+ self.check_snake_case(cx, "trait method", t.ident, t.span);
+ }
+
+ fn check_lifetime_def(&mut self, cx: &Context, t: &ast::LifetimeDef) {
+ self.check_snake_case(cx, "lifetime", t.lifetime.name.ident(), t.lifetime.span);
+ }
+
+ fn check_pat(&mut self, cx: &Context, p: &ast::Pat) {
+ if let &ast::PatIdent(_, ref path1, _) = &p.node {
+ let def = cx.tcx.def_map.borrow().get(&p.id).map(|d| d.full_def());
+ if let Some(def::DefLocal(_)) = def {
+ self.check_snake_case(cx, "variable", path1.node, p.span);
+ }
+ }
+ }
+
+ fn check_struct_def(&mut self, cx: &Context, s: &ast::StructDef,
+ _: ast::Ident, _: &ast::Generics, _: ast::NodeId) {
+ for sf in &s.fields {
+ if let ast::StructField_ { kind: ast::NamedField(ident, _), .. } = sf.node {
+ self.check_snake_case(cx, "structure field", ident, sf.span);
+ }
+ }
+ }
+}
+
+declare_lint! {
+ pub NON_UPPER_CASE_GLOBALS,
+ Warn,
+ "static constants should have uppercase identifiers"
+}
+
+#[derive(Copy)]
+pub struct NonUpperCaseGlobals;
+
+impl NonUpperCaseGlobals {
+ fn check_upper_case(cx: &Context, sort: &str, ident: ast::Ident, span: Span) {
+ let s = token::get_ident(ident);
+
+ if s.chars().any(|c| c.is_lowercase()) {
+ let uc: String = NonSnakeCase::to_snake_case(&s).chars()
+ .map(|c| c.to_uppercase()).collect();
+ if uc != &s[..] {
+ cx.span_lint(NON_UPPER_CASE_GLOBALS, span,
+ &format!("{} `{}` should have an upper case name such as `{}`",
+ sort, s, uc));
+ } else {
+ cx.span_lint(NON_UPPER_CASE_GLOBALS, span,
+ &format!("{} `{}` should have an upper case name",
+ sort, s));
+ }
+ }
+ }
+}
+
+impl LintPass for NonUpperCaseGlobals {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(NON_UPPER_CASE_GLOBALS)
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ match it.node {
+ // only check static constants
+ ast::ItemStatic(_, ast::MutImmutable, _) => {
+ NonUpperCaseGlobals::check_upper_case(cx, "static constant", it.ident, it.span);
+ }
+ ast::ItemConst(..) => {
+ NonUpperCaseGlobals::check_upper_case(cx, "constant", it.ident, it.span);
+ }
+ _ => {}
+ }
+ }
+
+ fn check_pat(&mut self, cx: &Context, p: &ast::Pat) {
+ // Lint for constants that look like binding identifiers (#7526)
+ match (&p.node, cx.tcx.def_map.borrow().get(&p.id).map(|d| d.full_def())) {
+ (&ast::PatIdent(_, ref path1, _), Some(def::DefConst(..))) => {
+ NonUpperCaseGlobals::check_upper_case(cx, "constant in pattern",
+ path1.node, p.span);
+ }
+ _ => {}
+ }
+ }
+}
+
+declare_lint! {
+ UNUSED_PARENS,
+ Warn,
+ "`if`, `match`, `while` and `return` do not need parentheses"
+}
+
+#[derive(Copy)]
+pub struct UnusedParens;
+
+impl UnusedParens {
+ fn check_unused_parens_core(&self, cx: &Context, value: &ast::Expr, msg: &str,
+ struct_lit_needs_parens: bool) {
+ if let ast::ExprParen(ref inner) = value.node {
+ let necessary = struct_lit_needs_parens && contains_exterior_struct_lit(&**inner);
+ if !necessary {
+ cx.span_lint(UNUSED_PARENS, value.span,
+ &format!("unnecessary parentheses around {}",
+ msg))
+ }
+ }
+
+ /// Expressions that syntactically contain an "exterior" struct
+ /// literal i.e. not surrounded by any parens or other
+ /// delimiters, e.g. `X { y: 1 }`, `X { y: 1 }.method()`, `foo
+ /// == X { y: 1 }` and `X { y: 1 } == foo` all do, but `(X {
+ /// y: 1 }) == foo` does not.
+ fn contains_exterior_struct_lit(value: &ast::Expr) -> bool {
+ match value.node {
+ ast::ExprStruct(..) => true,
+
+ ast::ExprAssign(ref lhs, ref rhs) |
+ ast::ExprAssignOp(_, ref lhs, ref rhs) |
+ ast::ExprBinary(_, ref lhs, ref rhs) => {
+ // X { y: 1 } + X { y: 2 }
+ contains_exterior_struct_lit(&**lhs) ||
+ contains_exterior_struct_lit(&**rhs)
+ }
+ ast::ExprUnary(_, ref x) |
+ ast::ExprCast(ref x, _) |
+ ast::ExprField(ref x, _) |
+ ast::ExprTupField(ref x, _) |
+ ast::ExprIndex(ref x, _) => {
+ // &X { y: 1 }, X { y: 1 }.y
+ contains_exterior_struct_lit(&**x)
+ }
+
+ ast::ExprMethodCall(_, _, ref exprs) => {
+ // X { y: 1 }.bar(...)
+ contains_exterior_struct_lit(&*exprs[0])
+ }
+
+ _ => false
+ }
+ }
+ }
+}
+
+impl LintPass for UnusedParens {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_PARENS)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ let (value, msg, struct_lit_needs_parens) = match e.node {
+ ast::ExprIf(ref cond, _, _) => (cond, "`if` condition", true),
+ ast::ExprWhile(ref cond, _, _) => (cond, "`while` condition", true),
+ ast::ExprMatch(ref head, _, source) => match source {
+ ast::MatchSource::Normal => (head, "`match` head expression", true),
+ ast::MatchSource::IfLetDesugar { .. } => (head, "`if let` head expression", true),
+ ast::MatchSource::WhileLetDesugar => (head, "`while let` head expression", true),
+ ast::MatchSource::ForLoopDesugar => (head, "`for` head expression", true),
+ },
+ ast::ExprRet(Some(ref value)) => (value, "`return` value", false),
+ ast::ExprAssign(_, ref value) => (value, "assigned value", false),
+ ast::ExprAssignOp(_, _, ref value) => (value, "assigned value", false),
+ _ => return
+ };
+ self.check_unused_parens_core(cx, &**value, msg, struct_lit_needs_parens);
+ }
+
+ fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
+ let (value, msg) = match s.node {
+ ast::StmtDecl(ref decl, _) => match decl.node {
+ ast::DeclLocal(ref local) => match local.init {
+ Some(ref value) => (value, "assigned value"),
+ None => return
+ },
+ _ => return
+ },
+ _ => return
+ };
+ self.check_unused_parens_core(cx, &**value, msg, false);
+ }
+}
+
+declare_lint! {
+ UNUSED_IMPORT_BRACES,
+ Allow,
+ "unnecessary braces around an imported item"
+}
+
+#[derive(Copy)]
+pub struct UnusedImportBraces;
+
+impl LintPass for UnusedImportBraces {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_IMPORT_BRACES)
+ }
+
+ fn check_item(&mut self, cx: &Context, item: &ast::Item) {
+ match item.node {
+ ast::ItemUse(ref view_path) => {
+ match view_path.node {
+ ast::ViewPathList(_, ref items) => {
+ if items.len() == 1 {
+ match items[0].node {
+ ast::PathListIdent {ref name, ..} => {
+ let m = format!("braces around {} is unnecessary",
+ &token::get_ident(*name));
+ cx.span_lint(UNUSED_IMPORT_BRACES, item.span,
+ &m[..]);
+ },
+ _ => ()
+ }
+ }
+ }
+ _ => ()
+ }
+ },
+ _ => ()
+ }
+ }
+}
+
+declare_lint! {
+ NON_SHORTHAND_FIELD_PATTERNS,
+ Warn,
+ "using `Struct { x: x }` instead of `Struct { x }`"
+}
+
+#[derive(Copy)]
+pub struct NonShorthandFieldPatterns;
+
+impl LintPass for NonShorthandFieldPatterns {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(NON_SHORTHAND_FIELD_PATTERNS)
+ }
+
+ fn check_pat(&mut self, cx: &Context, pat: &ast::Pat) {
+ let def_map = cx.tcx.def_map.borrow();
+ if let ast::PatStruct(_, ref v, _) = pat.node {
+ let field_pats = v.iter()
+ .filter(|fieldpat| !fieldpat.node.is_shorthand)
+ .filter(|fieldpat| {
+ let def = def_map.get(&fieldpat.node.pat.id).map(|d| d.full_def());
+ def == Some(def::DefLocal(fieldpat.node.pat.id))
+ });
+ for fieldpat in field_pats {
+ if let ast::PatIdent(_, ident, None) = fieldpat.node.pat.node {
+ if ident.node.as_str() == fieldpat.node.ident.as_str() {
+ cx.span_lint(NON_SHORTHAND_FIELD_PATTERNS, fieldpat.span,
+ &format!("the `{}:` in this pattern is redundant and can \
+ be removed", ident.node.as_str()))
+ }
+ }
+ }
+ }
+ }
+}
+
+declare_lint! {
+ pub UNUSED_UNSAFE,
+ Warn,
+ "unnecessary use of an `unsafe` block"
+}
+
+#[derive(Copy)]
+pub struct UnusedUnsafe;
+
+impl LintPass for UnusedUnsafe {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_UNSAFE)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ if let ast::ExprBlock(ref blk) = e.node {
+ // Don't warn about generated blocks, that'll just pollute the output.
+ if blk.rules == ast::UnsafeBlock(ast::UserProvided) &&
+ !cx.tcx.used_unsafe.borrow().contains(&blk.id) {
+ cx.span_lint(UNUSED_UNSAFE, blk.span, "unnecessary `unsafe` block");
+ }
+ }
+ }
+}
+
+declare_lint! {
+ UNSAFE_CODE,
+ Allow,
+ "usage of `unsafe` code"
+}
+
+#[derive(Copy)]
+pub struct UnsafeCode;
+
+impl LintPass for UnsafeCode {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNSAFE_CODE)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ if let ast::ExprBlock(ref blk) = e.node {
+ // Don't warn about generated blocks, that'll just pollute the output.
+ if blk.rules == ast::UnsafeBlock(ast::UserProvided) {
+ cx.span_lint(UNSAFE_CODE, blk.span, "usage of an `unsafe` block");
+ }
+ }
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ match it.node {
+ ast::ItemTrait(ast::Unsafety::Unsafe, _, _, _) =>
+ cx.span_lint(UNSAFE_CODE, it.span, "declaration of an `unsafe` trait"),
+
+ ast::ItemImpl(ast::Unsafety::Unsafe, _, _, _, _, _) =>
+ cx.span_lint(UNSAFE_CODE, it.span, "implementation of an `unsafe` trait"),
+
+ _ => return,
+ }
+ }
+
+ fn check_fn(&mut self, cx: &Context, fk: visit::FnKind, _: &ast::FnDecl,
+ _: &ast::Block, span: Span, _: ast::NodeId) {
+ match fk {
+ visit::FkItemFn(_, _, ast::Unsafety::Unsafe, _) =>
+ cx.span_lint(UNSAFE_CODE, span, "declaration of an `unsafe` function"),
+
+ visit::FkMethod(_, _, m) => {
+ if let ast::Method_::MethDecl(_, _, _, _, ast::Unsafety::Unsafe, _, _, _) = m.node {
+ cx.span_lint(UNSAFE_CODE, m.span, "implementation of an `unsafe` method")
+ }
+ },
+
+ _ => (),
+ }
+ }
+
+ fn check_ty_method(&mut self, cx: &Context, ty_method: &ast::TypeMethod) {
+ if let ast::TypeMethod { unsafety: ast::Unsafety::Unsafe, span, ..} = *ty_method {
+ cx.span_lint(UNSAFE_CODE, span, "declaration of an `unsafe` method")
+ }
+ }
+}
+
+declare_lint! {
+ pub UNUSED_MUT,
+ Warn,
+ "detect mut variables which don't need to be mutable"
+}
+
+#[derive(Copy)]
+pub struct UnusedMut;
+
+impl UnusedMut {
+ fn check_unused_mut_pat(&self, cx: &Context, pats: &[P<ast::Pat>]) {
+ // collect all mutable pattern and group their NodeIDs by their Identifier to
+ // avoid false warnings in match arms with multiple patterns
+
+ let mut mutables = FnvHashMap();
+ for p in pats {
+ pat_util::pat_bindings(&cx.tcx.def_map, &**p, |mode, id, _, path1| {
+ let ident = path1.node;
+ if let ast::BindByValue(ast::MutMutable) = mode {
+ if !token::get_ident(ident).starts_with("_") {
+ match mutables.entry(ident.name.usize()) {
+ Vacant(entry) => { entry.insert(vec![id]); },
+ Occupied(mut entry) => { entry.get_mut().push(id); },
+ }
+ }
+ }
+ });
+ }
+
+ let used_mutables = cx.tcx.used_mut_nodes.borrow();
+ for (_, v) in &mutables {
+ if !v.iter().any(|e| used_mutables.contains(e)) {
+ cx.span_lint(UNUSED_MUT, cx.tcx.map.span(v[0]),
+ "variable does not need to be mutable");
+ }
+ }
+ }
+}
+
+impl LintPass for UnusedMut {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_MUT)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ if let ast::ExprMatch(_, ref arms, _) = e.node {
+ for a in arms {
+ self.check_unused_mut_pat(cx, &a.pats)
+ }
+ }
+ }
+
+ fn check_stmt(&mut self, cx: &Context, s: &ast::Stmt) {
+ if let ast::StmtDecl(ref d, _) = s.node {
+ if let ast::DeclLocal(ref l) = d.node {
+ self.check_unused_mut_pat(cx, slice::ref_slice(&l.pat));
+ }
+ }
+ }
+
+ fn check_fn(&mut self, cx: &Context,
+ _: visit::FnKind, decl: &ast::FnDecl,
+ _: &ast::Block, _: Span, _: ast::NodeId) {
+ for a in &decl.inputs {
+ self.check_unused_mut_pat(cx, slice::ref_slice(&a.pat));
+ }
+ }
+}
+
+declare_lint! {
+ UNUSED_ALLOCATION,
+ Warn,
+ "detects unnecessary allocations that can be eliminated"
+}
+
+#[derive(Copy)]
+pub struct UnusedAllocation;
+
+impl LintPass for UnusedAllocation {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNUSED_ALLOCATION)
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ match e.node {
+ ast::ExprUnary(ast::UnUniq, _) => (),
+ _ => return
+ }
+
+ if let Some(adjustment) = cx.tcx.adjustments.borrow().get(&e.id) {
+ if let ty::AdjustDerefRef(ty::AutoDerefRef { ref autoref, .. }) = *adjustment {
+ match autoref {
+ &Some(ty::AutoPtr(_, ast::MutImmutable, None)) => {
+ cx.span_lint(UNUSED_ALLOCATION, e.span,
+ "unnecessary allocation, use & instead");
+ }
+ &Some(ty::AutoPtr(_, ast::MutMutable, None)) => {
+ cx.span_lint(UNUSED_ALLOCATION, e.span,
+ "unnecessary allocation, use &mut instead");
+ }
+ _ => ()
+ }
+ }
+ }
+ }
+}
+
+declare_lint! {
+ MISSING_DOCS,
+ Allow,
+ "detects missing documentation for public members"
+}
+
+pub struct MissingDoc {
+ /// Stack of IDs of struct definitions.
+ struct_def_stack: Vec<ast::NodeId>,
+
+ /// True if inside variant definition
+ in_variant: bool,
+
+ /// Stack of whether #[doc(hidden)] is set
+ /// at each level which has lint attributes.
+ doc_hidden_stack: Vec<bool>,
+}
+
+impl MissingDoc {
+ pub fn new() -> MissingDoc {
+ MissingDoc {
+ struct_def_stack: vec!(),
+ in_variant: false,
+ doc_hidden_stack: vec!(false),
+ }
+ }
+
+ fn doc_hidden(&self) -> bool {
+ *self.doc_hidden_stack.last().expect("empty doc_hidden_stack")
+ }
+
+ fn check_missing_docs_attrs(&self,
+ cx: &Context,
+ id: Option<ast::NodeId>,
+ attrs: &[ast::Attribute],
+ sp: Span,
+ desc: &'static str) {
+ // If we're building a test harness, then warning about
+ // documentation is probably not really relevant right now.
+ if cx.sess().opts.test { return }
+
+ // `#[doc(hidden)]` disables missing_docs check.
+ if self.doc_hidden() { return }
+
+ // Only check publicly-visible items, using the result from the privacy pass.
+ // It's an option so the crate root can also use this function (it doesn't
+ // have a NodeId).
+ if let Some(ref id) = id {
+ if !cx.exported_items.contains(id) {
+ return;
+ }
+ }
+
+ let has_doc = attrs.iter().any(|a| {
+ match a.node.value.node {
+ ast::MetaNameValue(ref name, _) if *name == "doc" => true,
+ _ => false
+ }
+ });
+ if !has_doc {
+ cx.span_lint(MISSING_DOCS, sp,
+ &format!("missing documentation for {}", desc));
+ }
+ }
+}
+
+impl LintPass for MissingDoc {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(MISSING_DOCS)
+ }
+
+ fn enter_lint_attrs(&mut self, _: &Context, attrs: &[ast::Attribute]) {
+ let doc_hidden = self.doc_hidden() || attrs.iter().any(|attr| {
+ attr.check_name("doc") && match attr.meta_item_list() {
+ None => false,
+ Some(l) => attr::contains_name(&l[..], "hidden"),
+ }
+ });
+ self.doc_hidden_stack.push(doc_hidden);
+ }
+
+ fn exit_lint_attrs(&mut self, _: &Context, _: &[ast::Attribute]) {
+ self.doc_hidden_stack.pop().expect("empty doc_hidden_stack");
+ }
+
+ fn check_struct_def(&mut self, _: &Context,
+ _: &ast::StructDef, _: ast::Ident, _: &ast::Generics, id: ast::NodeId) {
+ self.struct_def_stack.push(id);
+ }
+
+ fn check_struct_def_post(&mut self, _: &Context,
+ _: &ast::StructDef, _: ast::Ident, _: &ast::Generics, id: ast::NodeId) {
+ let popped = self.struct_def_stack.pop().expect("empty struct_def_stack");
+ assert!(popped == id);
+ }
+
+ fn check_crate(&mut self, cx: &Context, krate: &ast::Crate) {
+ self.check_missing_docs_attrs(cx, None, &krate.attrs,
+ krate.span, "crate");
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ let desc = match it.node {
+ ast::ItemFn(..) => "a function",
+ ast::ItemMod(..) => "a module",
+ ast::ItemEnum(..) => "an enum",
+ ast::ItemStruct(..) => "a struct",
+ ast::ItemTrait(..) => "a trait",
+ ast::ItemTy(..) => "a type alias",
+ _ => return
+ };
+ self.check_missing_docs_attrs(cx, Some(it.id), &it.attrs,
+ it.span, desc);
+ }
+
+ fn check_fn(&mut self, cx: &Context,
+ fk: visit::FnKind, _: &ast::FnDecl,
+ _: &ast::Block, _: Span, _: ast::NodeId) {
+ if let visit::FkMethod(_, _, m) = fk {
+ // If the method is an impl for a trait, don't doc.
+ if method_context(cx, m) == TraitImpl { return; }
+
+ // Otherwise, doc according to privacy. This will also check
+ // doc for default methods defined on traits.
+ self.check_missing_docs_attrs(cx, Some(m.id), &m.attrs,
+ m.span, "a method");
+ }
+ }
+
+ fn check_ty_method(&mut self, cx: &Context, tm: &ast::TypeMethod) {
+ self.check_missing_docs_attrs(cx, Some(tm.id), &tm.attrs,
+ tm.span, "a type method");
+ }
+
+ fn check_trait_method(&mut self, cx: &Context, it: &ast::TraitItem) {
+ if let ast::TraitItem::TypeTraitItem(ref ty) = *it {
+ let assoc_ty = &ty.ty_param;
+ self.check_missing_docs_attrs(cx, Some(assoc_ty.id), &ty.attrs,
+ assoc_ty.span, "an associated type");
+ }
+ }
+
+ fn check_struct_field(&mut self, cx: &Context, sf: &ast::StructField) {
+ if let ast::NamedField(_, vis) = sf.node.kind {
+ if vis == ast::Public || self.in_variant {
+ let cur_struct_def = *self.struct_def_stack.last()
+ .expect("empty struct_def_stack");
+ self.check_missing_docs_attrs(cx, Some(cur_struct_def),
+ &sf.node.attrs, sf.span,
+ "a struct field")
+ }
+ }
+ }
+
+ fn check_variant(&mut self, cx: &Context, v: &ast::Variant, _: &ast::Generics) {
+ self.check_missing_docs_attrs(cx, Some(v.node.id), &v.node.attrs,
+ v.span, "a variant");
+ assert!(!self.in_variant);
+ self.in_variant = true;
+ }
+
+ fn check_variant_post(&mut self, _: &Context, _: &ast::Variant, _: &ast::Generics) {
+ assert!(self.in_variant);
+ self.in_variant = false;
+ }
+}
+
+declare_lint! {
+ pub MISSING_COPY_IMPLEMENTATIONS,
+ Allow,
+ "detects potentially-forgotten implementations of `Copy`"
+}
+
+#[derive(Copy)]
+pub struct MissingCopyImplementations;
+
+impl LintPass for MissingCopyImplementations {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(MISSING_COPY_IMPLEMENTATIONS)
+ }
+
+ fn check_item(&mut self, cx: &Context, item: &ast::Item) {
+ if !cx.exported_items.contains(&item.id) {
+ return
+ }
+ if cx.tcx
+ .destructor_for_type
+ .borrow()
+ .contains_key(&ast_util::local_def(item.id)) {
+ return
+ }
+ let ty = match item.node {
+ ast::ItemStruct(_, ref ast_generics) => {
+ if ast_generics.is_parameterized() {
+ return
+ }
+ ty::mk_struct(cx.tcx,
+ ast_util::local_def(item.id),
+ cx.tcx.mk_substs(Substs::empty()))
+ }
+ ast::ItemEnum(_, ref ast_generics) => {
+ if ast_generics.is_parameterized() {
+ return
+ }
+ ty::mk_enum(cx.tcx,
+ ast_util::local_def(item.id),
+ cx.tcx.mk_substs(Substs::empty()))
+ }
+ _ => return,
+ };
+ let parameter_environment = ty::empty_parameter_environment(cx.tcx);
+ if !ty::type_moves_by_default(¶meter_environment, item.span, ty) {
+ return
+ }
+ if ty::can_type_implement_copy(¶meter_environment, item.span, ty).is_ok() {
+ cx.span_lint(MISSING_COPY_IMPLEMENTATIONS,
+ item.span,
+ "type could implement `Copy`; consider adding `impl \
+ Copy`")
+ }
+ }
+}
+
+declare_lint! {
+ MISSING_DEBUG_IMPLEMENTATIONS,
+ Allow,
+ "detects missing implementations of fmt::Debug"
+}
+
+pub struct MissingDebugImplementations {
+ impling_types: Option<NodeSet>,
+}
+
+impl MissingDebugImplementations {
+ pub fn new() -> MissingDebugImplementations {
+ MissingDebugImplementations {
+ impling_types: None,
+ }
+ }
+}
+
+impl LintPass for MissingDebugImplementations {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(MISSING_DEBUG_IMPLEMENTATIONS)
+ }
+
+ fn check_item(&mut self, cx: &Context, item: &ast::Item) {
+ if !cx.exported_items.contains(&item.id) {
+ return;
+ }
+
+ match item.node {
+ ast::ItemStruct(..) | ast::ItemEnum(..) => {},
+ _ => return,
+ }
+
+ let debug = match cx.tcx.lang_items.debug_trait() {
+ Some(debug) => debug,
+ None => return,
+ };
+
+ if self.impling_types.is_none() {
+ let impls = cx.tcx.trait_impls.borrow();
+ let impls = match impls.get(&debug) {
+ Some(impls) => {
+ impls.borrow().iter()
+ .filter(|d| d.krate == ast::LOCAL_CRATE)
+ .filter_map(|d| ty::ty_to_def_id(ty::node_id_to_type(cx.tcx, d.node)))
+ .map(|d| d.node)
+ .collect()
+ }
+ None => NodeSet(),
+ };
+ self.impling_types = Some(impls);
+ debug!("{:?}", self.impling_types);
+ }
+
+ if !self.impling_types.as_ref().unwrap().contains(&item.id) {
+ cx.span_lint(MISSING_DEBUG_IMPLEMENTATIONS,
+ item.span,
+ "type does not implement `fmt::Debug`; consider adding #[derive(Debug)] \
+ or a manual implementation")
+ }
+ }
+}
+
+declare_lint! {
+ DEPRECATED,
+ Warn,
+ "detects use of #[deprecated] items"
+}
+
+/// Checks for use of items with `#[deprecated]` attributes
+#[derive(Copy)]
+pub struct Stability;
+
+impl Stability {
+ fn lint(&self, cx: &Context, _id: ast::DefId, span: Span, stability: &Option<attr::Stability>) {
+
+ // deprecated attributes apply in-crate and cross-crate
+ let (lint, label) = match *stability {
+ Some(attr::Stability { deprecated_since: Some(_), .. }) =>
+ (DEPRECATED, "deprecated"),
+ _ => return
+ };
+
+ output(cx, span, stability, lint, label);
+
+ fn output(cx: &Context, span: Span, stability: &Option<attr::Stability>,
+ lint: &'static Lint, label: &'static str) {
+ let msg = match *stability {
+ Some(attr::Stability { reason: Some(ref s), .. }) => {
+ format!("use of {} item: {}", label, *s)
+ }
+ _ => format!("use of {} item", label)
+ };
+
+ cx.span_lint(lint, span, &msg[..]);
+ }
+ }
+}
+
+impl LintPass for Stability {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(DEPRECATED)
+ }
+
+ fn check_item(&mut self, cx: &Context, item: &ast::Item) {
+ stability::check_item(cx.tcx, item, false,
+ &mut |id, sp, stab| self.lint(cx, id, sp, stab));
+ }
+
+ fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+ stability::check_expr(cx.tcx, e,
+ &mut |id, sp, stab| self.lint(cx, id, sp, stab));
+ }
+
+ fn check_path(&mut self, cx: &Context, path: &ast::Path, id: ast::NodeId) {
+ stability::check_path(cx.tcx, path, id,
+ &mut |id, sp, stab| self.lint(cx, id, sp, stab));
+ }
+
+ fn check_pat(&mut self, cx: &Context, pat: &ast::Pat) {
+ stability::check_pat(cx.tcx, pat,
+ &mut |id, sp, stab| self.lint(cx, id, sp, stab))
+ }
+}
+
+declare_lint! {
+ pub UNCONDITIONAL_RECURSION,
+ Warn,
+ "functions that cannot return without calling themselves"
+}
+
+#[derive(Copy)]
+pub struct UnconditionalRecursion;
+
+
+impl LintPass for UnconditionalRecursion {
+ fn get_lints(&self) -> LintArray {
+ lint_array![UNCONDITIONAL_RECURSION]
+ }
+
+ fn check_fn(&mut self, cx: &Context, fn_kind: visit::FnKind, _: &ast::FnDecl,
+ blk: &ast::Block, sp: Span, id: ast::NodeId) {
+ type F = for<'tcx> fn(&ty::ctxt<'tcx>,
+ ast::NodeId, ast::NodeId, ast::Ident, ast::NodeId) -> bool;
+
+ let (name, checker) = match fn_kind {
+ visit::FkItemFn(name, _, _, _) => (name, id_refers_to_this_fn as F),
+ visit::FkMethod(name, _, _) => (name, id_refers_to_this_method as F),
+ // closures can't recur, so they don't matter.
+ visit::FkFnBlock => return
+ };
+
+ let impl_def_id = ty::impl_of_method(cx.tcx, ast_util::local_def(id))
+ .unwrap_or(ast_util::local_def(ast::DUMMY_NODE_ID));
+ assert!(ast_util::is_local(impl_def_id));
+ let impl_node_id = impl_def_id.node;
+
+ // Walk through this function (say `f`) looking to see if
+ // every possible path references itself, i.e. the function is
+ // called recursively unconditionally. This is done by trying
+ // to find a path from the entry node to the exit node that
+ // *doesn't* call `f` by traversing from the entry while
+ // pretending that calls of `f` are sinks (i.e. ignoring any
+ // exit edges from them).
+ //
+ // NB. this has an edge case with non-returning statements,
+ // like `loop {}` or `panic!()`: control flow never reaches
+ // the exit node through these, so one can have a function
+ // that never actually calls itselfs but is still picked up by
+ // this lint:
+ //
+ // fn f(cond: bool) {
+ // if !cond { panic!() } // could come from `assert!(cond)`
+ // f(false)
+ // }
+ //
+ // In general, functions of that form may be able to call
+ // itself a finite number of times and then diverge. The lint
+ // considers this to be an error for two reasons, (a) it is
+ // easier to implement, and (b) it seems rare to actually want
+ // to have behaviour like the above, rather than
+ // e.g. accidentally recurring after an assert.
+
+ let cfg = cfg::CFG::new(cx.tcx, blk);
+
+ let mut work_queue = vec![cfg.entry];
+ let mut reached_exit_without_self_call = false;
+ let mut self_call_spans = vec![];
+ let mut visited = BitSet::new();
+
+ while let Some(idx) = work_queue.pop() {
+ let cfg_id = idx.node_id();
+ if idx == cfg.exit {
+ // found a path!
+ reached_exit_without_self_call = true;
+ break
+ } else if visited.contains(&cfg_id) {
+ // already done
+ continue
+ }
+ visited.insert(cfg_id);
+ let node_id = cfg.graph.node_data(idx).id();
+
+ // is this a recursive call?
+ if node_id != ast::DUMMY_NODE_ID && checker(cx.tcx, impl_node_id, id, name, node_id) {
+
+ self_call_spans.push(cx.tcx.map.span(node_id));
+ // this is a self call, so we shouldn't explore past
+ // this node in the CFG.
+ continue
+ }
+ // add the successors of this node to explore the graph further.
+ cfg.graph.each_outgoing_edge(idx, |_, edge| {
+ let target_idx = edge.target();
+ let target_cfg_id = target_idx.node_id();
+ if !visited.contains(&target_cfg_id) {
+ work_queue.push(target_idx)
+ }
+ true
+ });
+ }
+
+ // check the number of sell calls because a function that
+ // doesn't return (e.g. calls a `-> !` function or `loop { /*
+ // no break */ }`) shouldn't be linted unless it actually
+ // recurs.
+ if !reached_exit_without_self_call && self_call_spans.len() > 0 {
+ cx.span_lint(UNCONDITIONAL_RECURSION, sp,
+ "function cannot return without recurring");
+
+ // FIXME #19668: these could be span_lint_note's instead of this manual guard.
+ if cx.current_level(UNCONDITIONAL_RECURSION) != Level::Allow {
+ let sess = cx.sess();
+ // offer some help to the programmer.
+ for call in &self_call_spans {
+ sess.span_note(*call, "recursive call site")
+ }
+ sess.span_help(sp, "a `loop` may express intention better if this is on purpose")
+ }
+ }
+
+ // all done
+ return;
+
+ // Functions for identifying if the given NodeId `id`
+ // represents a call to the function `fn_id`/method
+ // `method_id`.
+
+ fn id_refers_to_this_fn<'tcx>(tcx: &ty::ctxt<'tcx>,
+ _: ast::NodeId,
+ fn_id: ast::NodeId,
+ _: ast::Ident,
+ id: ast::NodeId) -> bool {
+ tcx.def_map.borrow().get(&id)
+ .map_or(false, |def| def.def_id() == ast_util::local_def(fn_id))
+ }
+
+ // check if the method call `id` refers to method `method_id`
+ // (with name `method_name` contained in impl `impl_id`).
+ fn id_refers_to_this_method<'tcx>(tcx: &ty::ctxt<'tcx>,
+ impl_id: ast::NodeId,
+ method_id: ast::NodeId,
+ method_name: ast::Ident,
+ id: ast::NodeId) -> bool {
+ let did = match tcx.method_map.borrow().get(&ty::MethodCall::expr(id)) {
+ None => return false,
+ Some(m) => match m.origin {
+ // There's no way to know if a method call via a
+ // vtable is recursion, so we assume it's not.
+ ty::MethodTraitObject(_) => return false,
+
+ // This `did` refers directly to the method definition.
+ ty::MethodStatic(did) | ty::MethodStaticClosure(did) => did,
+
+ // MethodTypeParam are methods from traits:
+
+ // The `impl ... for ...` of this method call
+ // isn't known, e.g. it might be a default method
+ // in a trait, so we get the def-id of the trait
+ // method instead.
+ ty::MethodTypeParam(
+ ty::MethodParam { ref trait_ref, method_num, impl_def_id: None, }) => {
+ ty::trait_item(tcx, trait_ref.def_id, method_num).def_id()
+ }
+
+ // The `impl` is known, so we check that with a
+ // special case:
+ ty::MethodTypeParam(
+ ty::MethodParam { impl_def_id: Some(impl_def_id), .. }) => {
+
+ let name = match tcx.map.expect_expr(id).node {
+ ast::ExprMethodCall(ref sp_ident, _, _) => sp_ident.node,
+ _ => tcx.sess.span_bug(
+ tcx.map.span(id),
+ "non-method call expr behaving like a method call?")
+ };
+ // it matches if it comes from the same impl,
+ // and has the same method name.
+ return ast_util::is_local(impl_def_id)
+ && impl_def_id.node == impl_id
+ && method_name.name == name.name
+ }
+ }
+ };
+
+ ast_util::is_local(did) && did.node == method_id
+ }
+ }
+}
+
+declare_lint! {
+ PLUGIN_AS_LIBRARY,
+ Warn,
+ "compiler plugin used as ordinary library in non-plugin crate"
+}
+
+#[derive(Copy)]
+pub struct PluginAsLibrary;
+
+impl LintPass for PluginAsLibrary {
+ fn get_lints(&self) -> LintArray {
+ lint_array![PLUGIN_AS_LIBRARY]
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ if cx.sess().plugin_registrar_fn.get().is_some() {
+ // We're compiling a plugin; it's fine to link other plugins.
+ return;
+ }
+
+ match it.node {
+ ast::ItemExternCrate(..) => (),
+ _ => return,
+ };
+
+ let md = match cx.sess().cstore.find_extern_mod_stmt_cnum(it.id) {
+ Some(cnum) => cx.sess().cstore.get_crate_data(cnum),
+ None => {
+ // Probably means we aren't linking the crate for some reason.
+ //
+ // Not sure if / when this could happen.
+ return;
+ }
+ };
+
+ if decoder::get_plugin_registrar_fn(md.data()).is_some() {
+ cx.span_lint(PLUGIN_AS_LIBRARY, it.span,
+ "compiler plugin used as an ordinary library");
+ }
+ }
+}
+
+declare_lint! {
+ PRIVATE_NO_MANGLE_FNS,
+ Warn,
+ "functions marked #[no_mangle] should be exported"
+}
+
+declare_lint! {
+ PRIVATE_NO_MANGLE_STATICS,
+ Warn,
+ "statics marked #[no_mangle] should be exported"
+}
+
+declare_lint! {
+ NO_MANGLE_CONST_ITEMS,
+ Deny,
+ "const items will not have their symbols exported"
+}
+
+#[derive(Copy)]
+pub struct InvalidNoMangleItems;
+
+impl LintPass for InvalidNoMangleItems {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(PRIVATE_NO_MANGLE_FNS,
+ PRIVATE_NO_MANGLE_STATICS,
+ NO_MANGLE_CONST_ITEMS)
+ }
+
+ fn check_item(&mut self, cx: &Context, it: &ast::Item) {
+ match it.node {
+ ast::ItemFn(..) => {
+ if attr::contains_name(&it.attrs, "no_mangle") &&
+ !cx.exported_items.contains(&it.id) {
+ let msg = format!("function {} is marked #[no_mangle], but not exported",
+ it.ident);
+ cx.span_lint(PRIVATE_NO_MANGLE_FNS, it.span, &msg);
+ }
+ },
+ ast::ItemStatic(..) => {
+ if attr::contains_name(it.attrs.as_slice(), "no_mangle") &&
+ !cx.exported_items.contains(&it.id) {
+ let msg = format!("static {} is marked #[no_mangle], but not exported",
+ it.ident);
+ cx.span_lint(PRIVATE_NO_MANGLE_STATICS, it.span, msg.as_slice());
+ }
+ },
+ ast::ItemConst(..) => {
+ if attr::contains_name(it.attrs.as_slice(), "no_mangle") {
+ // Const items do not refer to a particular location in memory, and therefore
+ // don't have anything to attach a symbol to
+ let msg = "const items should never be #[no_mangle], consider instead using \
+ `pub static`";
+ cx.span_lint(NO_MANGLE_CONST_ITEMS, it.span, msg);
+ }
+ }
+ _ => {},
+ }
+ }
+}
+
+/// Forbids using the `#[feature(...)]` attribute
+#[derive(Copy)]
+pub struct UnstableFeatures;
+
+declare_lint!(UNSTABLE_FEATURES, Allow,
+ "enabling unstable features");
+
+impl LintPass for UnstableFeatures {
+ fn get_lints(&self) -> LintArray {
+ lint_array!(UNSTABLE_FEATURES)
+ }
+ fn check_attribute(&mut self, ctx: &Context, attr: &ast::Attribute) {
+ use syntax::attr;
+ if attr::contains_name(&[attr.node.value.clone()], "feature") {
+ ctx.span_lint(UNSTABLE_FEATURES, attr.span, "unstable feature");
+ }
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Lints in the Rust compiler.
+//!
+//! This currently only contains the definitions and implementations
+//! of most of the lints that `rustc` supports directly, it does not
+//! contain the infrastructure for defining/registering lints. That is
+//! available in `rustc::lint` and `rustc::plugin` respectively.
+//!
+//! # Note
+//!
+//! This API is completely unstable and subject to change.
+
+#![crate_name = "rustc_lint"]
+#![unstable(feature = "rustc_private")]
+#![staged_api]
+#![crate_type = "dylib"]
+#![crate_type = "rlib"]
+#![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
+ html_favicon_url = "http://www.rust-lang.org/favicon.ico",
+ html_root_url = "http://doc.rust-lang.org/nightly/")]
+
+#![feature(box_patterns)]
+#![feature(box_syntax)]
+#![feature(collections)]
+#![feature(core)]
+#![feature(int_uint)]
+#![feature(quote)]
+#![feature(rustc_diagnostic_macros)]
+#![feature(rustc_private)]
+#![feature(unsafe_destructor)]
+#![feature(staged_api)]
+#![feature(std_misc)]
+#![feature(unicode)]
+#![cfg_attr(test, feature(test))]
+
+extern crate syntax;
+#[macro_use]
+extern crate rustc;
+#[macro_use]
+extern crate log;
+
+pub use rustc::lint as lint;
+pub use rustc::metadata as metadata;
+pub use rustc::middle as middle;
+pub use rustc::session as session;
+pub use rustc::util as util;
+
+use session::Session;
+use lint::{LintPassObject, LintId};
+
+mod builtin;
+
+/// Tell the `LintStore` about all the built-in lints (the ones
+/// defined in this crate and the ones defined in
+/// `rustc::lint::builtin`).
+pub fn register_builtins(store: &mut lint::LintStore, sess: Option<&Session>) {
+ macro_rules! add_builtin {
+ ($sess:ident, $($name:ident),*,) => (
+ {$(
+ store.register_pass($sess, false, box builtin::$name as LintPassObject);
+ )*}
+ )
+ }
+
+ macro_rules! add_builtin_with_new {
+ ($sess:ident, $($name:ident),*,) => (
+ {$(
+ store.register_pass($sess, false, box builtin::$name::new() as LintPassObject);
+ )*}
+ )
+ }
+
+ macro_rules! add_lint_group {
+ ($sess:ident, $name:expr, $($lint:ident),*) => (
+ store.register_group($sess, false, $name, vec![$(LintId::of(builtin::$lint)),*]);
+ )
+ }
+
+ add_builtin!(sess,
+ HardwiredLints,
+ WhileTrue,
+ UnusedCasts,
+ ImproperCTypes,
+ BoxPointers,
+ UnusedAttributes,
+ PathStatements,
+ UnusedResults,
+ NonCamelCaseTypes,
+ NonSnakeCase,
+ NonUpperCaseGlobals,
+ UnusedParens,
+ UnusedImportBraces,
+ NonShorthandFieldPatterns,
+ UnusedUnsafe,
+ UnsafeCode,
+ UnusedMut,
+ UnusedAllocation,
+ MissingCopyImplementations,
+ UnstableFeatures,
+ Stability,
+ UnconditionalRecursion,
+ InvalidNoMangleItems,
+ PluginAsLibrary,
+ );
+
+ add_builtin_with_new!(sess,
+ TypeLimits,
+ RawPointerDerive,
+ MissingDoc,
+ MissingDebugImplementations,
+ );
+
+ add_lint_group!(sess, "bad_style",
+ NON_CAMEL_CASE_TYPES, NON_SNAKE_CASE, NON_UPPER_CASE_GLOBALS);
+
+ add_lint_group!(sess, "unused",
+ UNUSED_IMPORTS, UNUSED_VARIABLES, UNUSED_ASSIGNMENTS, DEAD_CODE,
+ UNUSED_MUT, UNREACHABLE_CODE, UNUSED_MUST_USE,
+ UNUSED_UNSAFE, PATH_STATEMENTS);
+
+ // We have one lint pass defined specially
+ store.register_pass(sess, false, box lint::GatherNodeLevels as LintPassObject);
+
+ // Insert temporary renamings for a one-time deprecation
+ store.register_renamed("raw_pointer_deriving", "raw_pointer_derive");
+
+ store.register_renamed("unknown_features", "unused_features");
+}
html_favicon_url = "http://www.rust-lang.org/favicon.ico",
html_root_url = "http://doc.rust-lang.org/nightly/")]
-#![feature(core)]
#![feature(int_uint)]
#![feature(rustc_diagnostic_macros)]
#![feature(rustc_private)]
use rustc::middle::privacy::ImportUse::*;
use rustc::middle::privacy::LastPrivate::*;
use rustc::middle::privacy::PrivateDep::*;
-use rustc::middle::privacy::{ExportedItems, PublicItems, LastPrivateMap};
-use rustc::middle::privacy::{ExternalExports};
+use rustc::middle::privacy::{ExternalExports, ExportedItems, PublicItems};
use rustc::middle::ty::{MethodTypeParam, MethodStatic};
use rustc::middle::ty::{MethodCall, MethodMap, MethodOrigin, MethodParam};
use rustc::middle::ty::{MethodStaticClosure, MethodObject};
ast::ItemEnum(ref def, _) if public_first => {
for variant in &def.variants {
self.exported_items.insert(variant.node.id);
+ self.public_items.insert(variant.node.id);
}
}
// * Private trait impls for private types can be completely ignored
ast::ItemImpl(_, _, _, _, ref ty, ref impl_items) => {
let public_ty = match ty.node {
- ast::TyPath(_, id) => {
- match self.tcx.def_map.borrow()[id].clone() {
+ ast::TyPath(..) => {
+ match self.tcx.def_map.borrow()[ty.id].full_def() {
def::DefPrimTy(..) => true,
def => {
let did = def.def_id();
Some(id) => { self.exported_items.insert(id); }
None => {}
}
+ // fields can be public or private, so lets check
+ for field in &def.fields {
+ let vis = match field.node.kind {
+ ast::NamedField(_, vis) | ast::UnnamedField(vis) => vis
+ };
+ if vis == ast::Public {
+ self.public_items.insert(field.node.id);
+ }
+ }
}
ast::ItemTy(ref ty, _) if public_first => {
- if let ast::TyPath(_, id) = ty.node {
- match self.tcx.def_map.borrow()[id].clone() {
+ if let ast::TyPath(..) = ty.node {
+ match self.tcx.def_map.borrow()[ty.id].full_def() {
def::DefPrimTy(..) | def::DefTyParam(..) => {},
def => {
let did = def.def_id();
in_foreign: bool,
parents: NodeMap<ast::NodeId>,
external_exports: ExternalExports,
- last_private_map: LastPrivateMap,
}
enum PrivacyResult {
// back up the chains to find the relevant struct/enum that
// was private.
ast::ItemImpl(_, _, _, _, ref ty, _) => {
- let id = match ty.node {
- ast::TyPath(_, id) => id,
+ match ty.node {
+ ast::TyPath(..) => {}
_ => return Some((err_span, err_msg, None)),
};
- let def = self.tcx.def_map.borrow()[id].clone();
+ let def = self.tcx.def_map.borrow()[ty.id].full_def();
let did = def.def_id();
assert!(is_local(did));
match self.tcx.map.get(did.node) {
}
// Checks that a path is in scope.
- fn check_path(&mut self, span: Span, path_id: ast::NodeId, path: &ast::Path) {
+ fn check_path(&mut self, span: Span, path_id: ast::NodeId, last: ast::Ident) {
debug!("privacy - path {}", self.nodestr(path_id));
- let orig_def = self.tcx.def_map.borrow()[path_id].clone();
+ let path_res = self.tcx.def_map.borrow()[path_id];
let ck = |tyname: &str| {
let ck_public = |def: ast::DefId| {
debug!("privacy - ck_public {:?}", def);
- let name = token::get_ident(path.segments.last().unwrap().identifier);
- let origdid = orig_def.def_id();
+ let name = token::get_ident(last);
+ let origdid = path_res.def_id();
self.ensure_public(span,
def,
Some(origdid),
&format!("{} `{}`", tyname, name))
};
- match self.last_private_map[path_id] {
+ match path_res.last_private {
LastMod(AllPublic) => {},
LastMod(DependsOn(def)) => {
self.report_error(ck_public(def));
// def map is not. Therefore the names we work out below will not always
// be accurate and we can get slightly wonky error messages (but type
// checking is always correct).
- match self.tcx.def_map.borrow()[path_id].clone() {
- def::DefStaticMethod(..) => ck("static method"),
+ match path_res.full_def() {
def::DefFn(..) => ck("function"),
def::DefStatic(..) => ck("static"),
def::DefConst(..) => ck("const"),
def::DefVariant(..) => ck("variant"),
def::DefTy(_, false) => ck("type"),
def::DefTy(_, true) => ck("enum"),
- def::DefaultImpl(..) => ck("trait"),
+ def::DefTrait(..) => ck("trait"),
def::DefStruct(..) => ck("struct"),
- def::DefMethod(_, Some(..), _) => ck("trait method"),
def::DefMethod(..) => ck("method"),
def::DefMod(..) => ck("module"),
_ => {}
impl<'a, 'tcx, 'v> Visitor<'v> for PrivacyVisitor<'a, 'tcx> {
fn visit_item(&mut self, item: &ast::Item) {
- match item.node {
- ast::ItemUse(ref vpath) => {
- match vpath.node {
- ast::ViewPathSimple(..) | ast::ViewPathGlob(..) => {}
- ast::ViewPathList(ref prefix, ref list) => {
- for pid in list {
- match pid.node {
- ast::PathListIdent { id, name } => {
- debug!("privacy - ident item {}", id);
- let seg = ast::PathSegment {
- identifier: name,
- parameters: ast::PathParameters::none(),
- };
- let segs = vec![seg];
- let path = ast::Path {
- global: false,
- span: pid.span,
- segments: segs,
- };
- self.check_path(pid.span, id, &path);
- }
- ast::PathListMod { id } => {
- debug!("privacy - mod item {}", id);
- self.check_path(pid.span, id, prefix);
- }
- }
+ if let ast::ItemUse(ref vpath) = item.node {
+ if let ast::ViewPathList(ref prefix, ref list) = vpath.node {
+ for pid in list {
+ match pid.node {
+ ast::PathListIdent { id, name } => {
+ debug!("privacy - ident item {}", id);
+ self.check_path(pid.span, id, name);
+ }
+ ast::PathListMod { id } => {
+ debug!("privacy - mod item {}", id);
+ let name = prefix.segments.last().unwrap().identifier;
+ self.check_path(pid.span, id, name);
}
}
}
}
- _ => {}
}
let orig_curitem = replace(&mut self.curitem, item.id);
visit::walk_item(self, item);
}
}
ty::ty_enum(_, _) => {
- match self.tcx.def_map.borrow()[expr.id].clone() {
+ match self.tcx.def_map.borrow()[expr.id].full_def() {
def::DefVariant(_, variant_id, _) => {
for field in fields {
self.check_field(expr.span, variant_id,
struct type?!"),
}
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
let guard = |did: ast::DefId| {
let fields = ty::lookup_struct_fields(self.tcx, did);
let any_priv = fields.iter().any(|f| {
with private fields");
}
};
- match self.tcx.def_map.borrow().get(&expr.id) {
- Some(&def::DefStruct(did)) => {
+ match self.tcx.def_map.borrow().get(&expr.id).map(|d| d.full_def()) {
+ Some(def::DefStruct(did)) => {
guard(if is_local(did) {
local_def(self.tcx.map.get_parent(did.node))
} else {
}
}
ty::ty_enum(_, _) => {
- match self.tcx.def_map.borrow().get(&pattern.id) {
- Some(&def::DefVariant(_, variant_id, _)) => {
+ match self.tcx.def_map.borrow().get(&pattern.id).map(|d| d.full_def()) {
+ Some(def::DefVariant(_, variant_id, _)) => {
for field in fields {
self.check_field(pattern.span, variant_id,
NamedField(field.node.ident.name));
}
fn visit_path(&mut self, path: &ast::Path, id: ast::NodeId) {
- self.check_path(path.span, id, path);
+ self.check_path(path.span, id, path.segments.last().unwrap().identifier);
visit::walk_path(self, path);
}
}
impl<'a, 'tcx> VisiblePrivateTypesVisitor<'a, 'tcx> {
fn path_is_private_type(&self, path_id: ast::NodeId) -> bool {
- let did = match self.tcx.def_map.borrow().get(&path_id).cloned() {
+ let did = match self.tcx.def_map.borrow().get(&path_id).map(|d| d.full_def()) {
// `int` etc. (None doesn't seem to occur.)
None | Some(def::DefPrimTy(..)) => return false,
Some(def) => def.def_id()
impl<'a, 'b, 'tcx, 'v> Visitor<'v> for CheckTypeForPrivatenessVisitor<'a, 'b, 'tcx> {
fn visit_ty(&mut self, ty: &ast::Ty) {
- if let ast::TyPath(_, path_id) = ty.node {
- if self.inner.path_is_private_type(path_id) {
+ if let ast::TyPath(..) = ty.node {
+ if self.inner.path_is_private_type(ty.id) {
self.contains_private = true;
// found what we're looking for so let's stop
// working.
//
// Those in 2. are warned via walk_generics and this
// call here.
- self.visit_trait_ref(tr)
+ visit::walk_path(self, &tr.path);
}
}
} else if trait_ref.is_none() && self_is_public_path {
}
fn visit_ty(&mut self, t: &ast::Ty) {
- if let ast::TyPath(ref p, path_id) = t.node {
+ if let ast::TyPath(_, ref p) = t.node {
if !self.tcx.sess.features.borrow().visible_private_types &&
- self.path_is_private_type(path_id) {
+ self.path_is_private_type(t.id) {
self.tcx.sess.span_err(p.span,
"private type in exported type signature");
}
pub fn check_crate(tcx: &ty::ctxt,
export_map: &def::ExportMap,
- external_exports: ExternalExports,
- last_private_map: LastPrivateMap)
+ external_exports: ExternalExports)
-> (ExportedItems, PublicItems) {
let krate = tcx.map.krate();
tcx: tcx,
parents: visitor.parents,
external_exports: external_exports,
- last_private_map: last_private_map,
};
visit::walk_crate(&mut visitor, krate);
use NameBindings;
use ParentLink::{self, ModuleParentLink, BlockParentLink};
use Resolver;
-use RibKind::*;
use Shadowable;
use TypeNsDef;
-use TypeParameters::HasTypeParameters;
use self::DuplicateCheckingMode::*;
use self::NamespaceError::*;
use rustc::metadata::csearch;
use rustc::metadata::decoder::{DefLike, DlDef, DlField, DlImpl};
use rustc::middle::def::*;
-use rustc::middle::subst::FnSpace;
use syntax::ast::{Block, Crate};
use syntax::ast::{DeclItem, DefId};
use syntax::ast::{Item, ItemConst, ItemEnum, ItemExternCrate, ItemFn};
use syntax::ast::{ItemForeignMod, ItemImpl, ItemMac, ItemMod, ItemStatic, ItemDefaultImpl};
use syntax::ast::{ItemStruct, ItemTrait, ItemTy, ItemUse};
-use syntax::ast::{MethodImplItem, Name, NamedField, NodeId};
-use syntax::ast::{PathListIdent, PathListMod};
-use syntax::ast::{Public, SelfStatic};
+use syntax::ast::{Name, NamedField, NodeId};
+use syntax::ast::{PathListIdent, PathListMod, Public};
use syntax::ast::StmtDecl;
use syntax::ast::StructVariantKind;
use syntax::ast::TupleVariantKind;
-use syntax::ast::TyObjectSum;
-use syntax::ast::{TypeImplItem, UnnamedField};
+use syntax::ast::UnnamedField;
use syntax::ast::{Variant, ViewPathGlob, ViewPathList, ViewPathSimple};
use syntax::ast::{Visibility};
-use syntax::ast::TyPath;
use syntax::ast;
-use syntax::ast_util::{self, PostExpansionMethod, local_def};
+use syntax::ast_util::{self, local_def};
use syntax::attr::AttrMetaMethods;
use syntax::parse::token::{self, special_idents};
use syntax::codemap::{Span, DUMMY_SP};
Some(TypeNS)
}
ForbidDuplicateTypesAndModules => {
- match child.def_for_namespace(TypeNS) {
- None => {}
- Some(_) if child.get_module_if_available()
- .map(|m| m.kind.get()) ==
- Some(ImplModuleKind) => {}
- Some(_) => duplicate_type = TypeError
+ if child.defined_in_namespace(TypeNS) {
+ duplicate_type = TypeError;
}
Some(TypeNS)
}
name_bindings.define_type(DefTy(local_def(item.id), true), sp, modifiers);
let parent_link = self.get_parent_link(parent, name);
- // We want to make sure the module type is EnumModuleKind
- // even if there's already an ImplModuleKind module defined,
- // since that's how we prevent duplicate enum definitions
name_bindings.set_module_kind(parent_link,
Some(local_def(item.id)),
EnumModuleKind,
parent.clone()
}
- ItemImpl(_, _, _, None, ref ty, ref impl_items) => {
- // If this implements an anonymous trait, then add all the
- // methods within to a new module, if the type was defined
- // within this module.
-
- let mod_name = match ty.node {
- TyPath(ref path, _) if path.segments.len() == 1 => {
- // FIXME(18446) we should distinguish between the name of
- // a trait and the name of an impl of that trait.
- Some(path.segments.last().unwrap().identifier.name)
- }
- TyObjectSum(ref lhs_ty, _) => {
- match lhs_ty.node {
- TyPath(ref path, _) if path.segments.len() == 1 => {
- Some(path.segments.last().unwrap().identifier.name)
- }
- _ => {
- None
- }
- }
- }
- _ => {
- None
- }
- };
-
- let mod_name = match mod_name {
- Some(mod_name) => mod_name,
- None => {
- self.resolve_error(ty.span,
- "inherent implementations may \
- only be implemented in the same \
- module as the type they are \
- implemented for");
- return parent.clone();
- }
- };
- // Create the module and add all methods.
- let child_opt = parent.children.borrow().get(&mod_name)
- .and_then(|m| m.get_module_if_available());
- let new_parent = match child_opt {
- // It already exists
- Some(ref child) if (child.kind.get() == ImplModuleKind ||
- child.kind.get() == TraitModuleKind) => {
- child.clone()
- }
- Some(ref child) if child.kind.get() == EnumModuleKind ||
- child.kind.get() == TypeModuleKind => {
- child.clone()
- }
- // Create the module
- _ => {
- let name_bindings =
- self.add_child(mod_name, parent, ForbidDuplicateModules, sp);
-
- let parent_link = self.get_parent_link(parent, name);
- let def_id = local_def(item.id);
- let ns = TypeNS;
- let is_public =
- !name_bindings.defined_in_namespace(ns) ||
- name_bindings.defined_in_public_namespace(ns);
-
- name_bindings.define_module(parent_link,
- Some(def_id),
- ImplModuleKind,
- false,
- is_public,
- sp);
-
- name_bindings.get_module()
- }
- };
-
- // For each implementation item...
- for impl_item in impl_items {
- match *impl_item {
- MethodImplItem(ref method) => {
- // Add the method to the module.
- let name = method.pe_ident().name;
- let method_name_bindings =
- self.add_child(name,
- &new_parent,
- ForbidDuplicateValues,
- method.span);
- let def = match method.pe_explicit_self()
- .node {
- SelfStatic => {
- // Static methods become
- // `DefStaticMethod`s.
- DefStaticMethod(local_def(method.id),
- FromImpl(local_def(item.id)))
- }
- _ => {
- // Non-static methods become
- // `DefMethod`s.
- DefMethod(local_def(method.id),
- None,
- FromImpl(local_def(item.id)))
- }
- };
-
- // NB: not IMPORTABLE
- let modifiers = if method.pe_vis() == ast::Public {
- PUBLIC
- } else {
- DefModifiers::empty()
- };
- method_name_bindings.define_value(
- def,
- method.span,
- modifiers);
- }
- TypeImplItem(ref typedef) => {
- // Add the typedef to the module.
- let name = typedef.ident.name;
- let typedef_name_bindings =
- self.add_child(
- name,
- &new_parent,
- ForbidDuplicateTypesAndModules,
- typedef.span);
- let def = DefAssociatedTy(local_def(
- typedef.id));
- // NB: not IMPORTABLE
- let modifiers = if typedef.vis == ast::Public {
- PUBLIC
- } else {
- DefModifiers::empty()
- };
- typedef_name_bindings.define_type(
- def,
- typedef.span,
- modifiers);
- }
- }
- }
- parent.clone()
- }
-
ItemDefaultImpl(_, _) |
- ItemImpl(_, _, _, Some(_), _, _) => parent.clone(),
+ ItemImpl(..) => parent.clone(),
ItemTrait(_, _, _, ref items) => {
let name_bindings =
// Add the names of all the items to the trait info.
for trait_item in items {
- let (name, kind) = match *trait_item {
+ let (name, trait_item_id) = match *trait_item {
ast::RequiredMethod(_) |
ast::ProvidedMethod(_) => {
let ty_m = ast_util::trait_item_to_ty_method(trait_item);
let name = ty_m.ident.name;
// Add it as a name in the trait module.
- let (def, static_flag) = match ty_m.explicit_self
- .node {
- SelfStatic => {
- // Static methods become `DefStaticMethod`s.
- (DefStaticMethod(
- local_def(ty_m.id),
- FromTrait(local_def(item.id))),
- StaticMethodTraitItemKind)
- }
- _ => {
- // Non-static methods become `DefMethod`s.
- (DefMethod(local_def(ty_m.id),
- Some(local_def(item.id)),
- FromTrait(local_def(item.id))),
- NonstaticMethodTraitItemKind)
- }
- };
+ let def = DefMethod(local_def(ty_m.id),
+ FromTrait(local_def(item.id)));
let method_name_bindings =
self.add_child(name,
ty_m.span,
PUBLIC);
- (name, static_flag)
+ (name, local_def(ty_m.id))
}
ast::TypeTraitItem(ref associated_type) => {
- let def = DefAssociatedTy(local_def(
- associated_type.ty_param.id));
+ let def = DefAssociatedTy(local_def(item.id),
+ local_def(associated_type.ty_param.id));
let name_bindings =
self.add_child(associated_type.ty_param.ident.name,
associated_type.ty_param.span,
PUBLIC);
- (associated_type.ty_param.ident.name, TypeTraitItemKind)
+ (associated_type.ty_param.ident.name,
+ local_def(associated_type.ty_param.id))
}
};
- self.trait_item_map.insert((name, def_id), kind);
+ self.trait_item_map.insert((name, def_id), trait_item_id);
}
- name_bindings.define_type(DefaultImpl(def_id), sp, modifiers);
+ name_bindings.define_type(DefTrait(def_id), sp, modifiers);
parent.clone()
}
ItemMac(..) => parent.clone()
}
/// Constructs the reduced graph for one foreign item.
- fn build_reduced_graph_for_foreign_item<F>(&mut self,
- foreign_item: &ForeignItem,
- parent: &Rc<Module>,
- f: F) where
- F: FnOnce(&mut Resolver),
- {
+ fn build_reduced_graph_for_foreign_item(&mut self,
+ foreign_item: &ForeignItem,
+ parent: &Rc<Module>) {
let name = foreign_item.ident.name;
let is_public = foreign_item.vis == ast::Public;
let modifiers = if is_public { PUBLIC } else { DefModifiers::empty() } | IMPORTABLE;
self.add_child(name, parent, ForbidDuplicateValues,
foreign_item.span);
- match foreign_item.node {
- ForeignItemFn(_, ref generics) => {
- let def = DefFn(local_def(foreign_item.id), false);
- name_bindings.define_value(def, foreign_item.span, modifiers);
-
- self.with_type_parameter_rib(
- HasTypeParameters(generics,
- FnSpace,
- foreign_item.id,
- NormalRibKind),
- f);
+ let def = match foreign_item.node {
+ ForeignItemFn(..) => {
+ DefFn(local_def(foreign_item.id), false)
}
ForeignItemStatic(_, m) => {
- let def = DefStatic(local_def(foreign_item.id), m);
- name_bindings.define_value(def, foreign_item.span, modifiers);
-
- f(self.resolver)
+ DefStatic(local_def(foreign_item.id), m)
}
- }
+ };
+ name_bindings.define_value(def, foreign_item.span, modifiers);
}
fn build_reduced_graph_for_block(&mut self, block: &Block, parent: &Rc<Module>) -> Rc<Module> {
let kind = match def {
DefTy(_, true) => EnumModuleKind,
- DefTy(_, false) => TypeModuleKind,
- DefStruct(..) => ImplModuleKind,
+ DefTy(_, false) | DefStruct(..) => TypeModuleKind,
_ => NormalModuleKind
};
csearch::get_tuple_struct_definition_if_ctor(&self.session.cstore, ctor_id)
.map_or(def, |_| DefStruct(ctor_id)), DUMMY_SP, modifiers);
}
- DefFn(..) | DefStaticMethod(..) | DefStatic(..) | DefConst(..) | DefMethod(..) => {
+ DefFn(..) | DefStatic(..) | DefConst(..) | DefMethod(..) => {
debug!("(building reduced graph for external \
crate) building value (fn/static) {}", final_ident);
// impl methods have already been defined with the correct importability modifier
}
child_name_bindings.define_value(def, DUMMY_SP, modifiers);
}
- DefaultImpl(def_id) => {
+ DefTrait(def_id) => {
debug!("(building reduced graph for external \
crate) building type {}", final_ident);
let trait_item_def_ids =
csearch::get_trait_item_def_ids(&self.session.cstore, def_id);
- for trait_item_def_id in &trait_item_def_ids {
- let (trait_item_name, trait_item_kind) =
- csearch::get_trait_item_name_and_kind(
- &self.session.cstore,
- trait_item_def_id.def_id());
+ for trait_item_def in &trait_item_def_ids {
+ let trait_item_name = csearch::get_trait_name(&self.session.cstore,
+ trait_item_def.def_id());
debug!("(building reduced graph for external crate) ... \
adding trait item '{}'",
token::get_name(trait_item_name));
- self.trait_item_map.insert((trait_item_name, def_id), trait_item_kind);
+ self.trait_item_map.insert((trait_item_name, def_id),
+ trait_item_def.def_id());
if is_exported {
- self.external_exports
- .insert(trait_item_def_id.def_id());
+ self.external_exports.insert(trait_item_def.def_id());
}
}
is_public,
DUMMY_SP)
}
- DefTy(..) | DefAssociatedTy(..) | DefAssociatedPath(..) => {
+ DefTy(..) | DefAssociatedTy(..) => {
debug!("(building reduced graph for external \
crate) building type {}", final_ident);
}
DefLocal(..) | DefPrimTy(..) | DefTyParam(..) |
DefUse(..) | DefUpvar(..) | DefRegion(..) |
- DefTyParamBinder(..) | DefLabel(..) | DefSelfTy(..) => {
+ DefLabel(..) | DefSelfTy(..) => {
panic!("didn't expect `{:?}`", def);
}
}
}
}
}
- DlImpl(def) => {
- match csearch::get_type_name_if_impl(&self.session.cstore, def) {
- None => {}
- Some(final_name) => {
- let methods_opt =
- csearch::get_methods_if_impl(&self.session.cstore, def);
- match methods_opt {
- Some(ref methods) if
- methods.len() >= 1 => {
- debug!("(building reduced graph for \
- external crate) processing \
- static methods for type name {}",
- token::get_name(final_name));
-
- let child_name_bindings =
- self.add_child(
- final_name,
- root,
- OverwriteDuplicates,
- DUMMY_SP);
-
- // Process the static methods. First,
- // create the module.
- let type_module;
- let type_def = child_name_bindings.type_def.borrow().clone();
- match type_def {
- Some(TypeNsDef {
- module_def: Some(module_def),
- ..
- }) => {
- // We already have a module. This
- // is OK.
- type_module = module_def;
-
- // Mark it as an impl module if
- // necessary.
- type_module.kind.set(ImplModuleKind);
- }
- Some(_) | None => {
- let parent_link =
- self.get_parent_link(root, final_name);
- child_name_bindings.define_module(
- parent_link,
- Some(def),
- ImplModuleKind,
- true,
- true,
- DUMMY_SP);
- type_module =
- child_name_bindings.
- get_module();
- }
- }
-
- // Add each static method to the module.
- let new_parent = type_module;
- for method_info in methods {
- let name = method_info.name;
- debug!("(building reduced graph for \
- external crate) creating \
- static method '{}'",
- token::get_name(name));
-
- let method_name_bindings =
- self.add_child(name,
- &new_parent,
- OverwriteDuplicates,
- DUMMY_SP);
- let def = DefFn(method_info.def_id, false);
-
- // NB: not IMPORTABLE
- let modifiers = if method_info.vis == ast::Public {
- PUBLIC
- } else {
- DefModifiers::empty()
- };
- method_name_bindings.define_value(
- def, DUMMY_SP, modifiers);
- }
- }
-
- // Otherwise, do nothing.
- Some(_) | None => {}
- }
- }
- }
+ DlImpl(_) => {
+ debug!("(building reduced graph for external crate) \
+ ignoring impl");
}
DlField => {
debug!("(building reduced graph for external crate) \
}
fn visit_foreign_item(&mut self, foreign_item: &ForeignItem) {
- let parent = &self.parent;
- self.builder.build_reduced_graph_for_foreign_item(foreign_item,
- parent,
- |r| {
- let mut v = BuildReducedGraphVisitor {
- builder: GraphBuilder { resolver: r },
- parent: parent.clone()
- };
- visit::walk_foreign_item(&mut v, foreign_item);
- })
+ self.builder.build_reduced_graph_for_foreign_item(foreign_item, &self.parent);
}
fn visit_block(&mut self, block: &Block) {
"unused import".to_string());
}
- let (v_priv, t_priv) = match self.last_private.get(&id) {
- Some(&LastImport {
- value_priv: v,
- value_used: _,
- type_priv: t,
- type_used: _
- }) => (v, t),
- Some(_) => {
+ let mut def_map = self.def_map.borrow_mut();
+ let path_res = if let Some(r) = def_map.get_mut(&id) {
+ r
+ } else {
+ return;
+ };
+ let (v_priv, t_priv) = match path_res.last_private {
+ LastImport { value_priv, type_priv, .. } => (value_priv, type_priv),
+ _ => {
panic!("we should only have LastImport for `use` directives")
}
- _ => return,
};
let mut v_used = if self.used_imports.contains(&(id, ValueNS)) {
_ => {},
}
- self.last_private.insert(id, LastImport{value_priv: v_priv,
- value_used: v_used,
- type_priv: t_priv,
- type_used: t_used});
+ path_res.last_private = LastImport {
+ value_priv: v_priv,
+ value_used: v_used,
+ type_priv: t_priv,
+ type_used: t_used
+ };
}
}
use self::FallbackSuggestion::*;
use self::TypeParameters::*;
use self::RibKind::*;
-use self::MethodSort::*;
use self::UseLexicalScopeFlag::*;
use self::ModulePrefixResult::*;
use self::NameSearchType::*;
use self::BareIdentifierPatternResolution::*;
use self::ParentLink::*;
use self::ModuleKind::*;
-use self::TraitReferenceType::*;
use self::FallbackChecks::*;
use rustc::session::Session;
use syntax::ast::{Arm, BindByRef, BindByValue, BindingMode, Block, Crate, CrateNum};
use syntax::ast::{DefId, Expr, ExprAgain, ExprBreak, ExprField};
-use syntax::ast::{ExprClosure, ExprLoop, ExprWhile, ExprMethodCall};
-use syntax::ast::{ExprPath, ExprQPath, ExprStruct, FnDecl};
+use syntax::ast::{ExprLoop, ExprWhile, ExprMethodCall};
+use syntax::ast::{ExprPath, ExprStruct, FnDecl};
use syntax::ast::{ForeignItemFn, ForeignItemStatic, Generics};
use syntax::ast::{Ident, ImplItem, Item, ItemConst, ItemEnum, ItemExternCrate};
use syntax::ast::{ItemFn, ItemForeignMod, ItemImpl, ItemMac, ItemMod, ItemStatic, ItemDefaultImpl};
use syntax::ast::{ItemStruct, ItemTrait, ItemTy, ItemUse};
-use syntax::ast::{Local, MethodImplItem, Mod, Name, NodeId};
+use syntax::ast::{Local, MethodImplItem, Name, NodeId};
use syntax::ast::{Pat, PatEnum, PatIdent, PatLit};
-use syntax::ast::{PatRange, PatStruct, Path};
-use syntax::ast::{PolyTraitRef, PrimTy, SelfExplicit};
-use syntax::ast::{RegionTyParamBound, StructField};
-use syntax::ast::{TraitRef, TraitTyParamBound};
-use syntax::ast::{Ty, TyBool, TyChar, TyF32};
-use syntax::ast::{TyF64, TyFloat, TyIs, TyI8, TyI16, TyI32, TyI64, TyInt, TyObjectSum};
-use syntax::ast::{TyParam, TyParamBound, TyPath, TyPtr, TyPolyTraitRef, TyQPath};
+use syntax::ast::{PatRange, PatStruct, Path, PrimTy};
+use syntax::ast::{TraitRef, Ty, TyBool, TyChar, TyF32};
+use syntax::ast::{TyF64, TyFloat, TyIs, TyI8, TyI16, TyI32, TyI64, TyInt};
+use syntax::ast::{TyPath, TyPtr};
use syntax::ast::{TyRptr, TyStr, TyUs, TyU8, TyU16, TyU32, TyU64, TyUint};
use syntax::ast::{TypeImplItem};
use syntax::ast;
use syntax::attr::AttrMetaMethods;
use syntax::ext::mtwt;
use syntax::parse::token::{self, special_names, special_idents};
-use syntax::codemap::{Span, Pos};
-use syntax::owned_slice::OwnedSlice;
+use syntax::codemap::{self, Span, Pos};
use syntax::visit::{self, Visitor};
use std::collections::{HashMap, HashSet};
fn visit_ty(&mut self, ty: &Ty) {
self.resolve_type(ty);
}
+ fn visit_generics(&mut self, generics: &Generics) {
+ self.resolve_generics(generics);
+ }
+ fn visit_poly_trait_ref(&mut self,
+ tref: &ast::PolyTraitRef,
+ m: &ast::TraitBoundModifier) {
+ match self.resolve_trait_reference(tref.trait_ref.ref_id, &tref.trait_ref.path, 0) {
+ Ok(def) => self.record_def(tref.trait_ref.ref_id, def),
+ Err(_) => { /* error already reported */ }
+ }
+ visit::walk_poly_trait_ref(self, tref, m);
+ }
+ fn visit_variant(&mut self, variant: &ast::Variant, generics: &Generics) {
+ if let Some(ref dis_expr) = variant.node.disr_expr {
+ // resolve the discriminator expr as a constant
+ self.with_constant_rib(|this| {
+ this.visit_expr(&**dis_expr);
+ });
+ }
+
+ // `visit::walk_variant` without the discriminant expression.
+ match variant.node.kind {
+ ast::TupleVariantKind(ref variant_arguments) => {
+ for variant_argument in variant_arguments.iter() {
+ self.visit_ty(&*variant_argument.ty);
+ }
+ }
+ ast::StructVariantKind(ref struct_definition) => {
+ self.visit_struct_def(&**struct_definition,
+ variant.node.name,
+ generics,
+ variant.node.id);
+ }
+ }
+ }
+ fn visit_foreign_item(&mut self, foreign_item: &ast::ForeignItem) {
+ let type_parameters = match foreign_item.node {
+ ForeignItemFn(_, ref generics) => {
+ HasTypeParameters(generics, FnSpace, ItemRibKind)
+ }
+ ForeignItemStatic(..) => NoTypeParameters
+ };
+ self.with_type_parameter_rib(type_parameters, |this| {
+ visit::walk_foreign_item(this, foreign_item);
+ });
+ }
+ fn visit_fn(&mut self,
+ function_kind: visit::FnKind<'v>,
+ declaration: &'v FnDecl,
+ block: &'v Block,
+ _: Span,
+ node_id: NodeId) {
+ let rib_kind = match function_kind {
+ visit::FkItemFn(_, generics, _, _) => {
+ self.visit_generics(generics);
+ ItemRibKind
+ }
+ visit::FkMethod(_, generics, method) => {
+ self.visit_generics(generics);
+ self.visit_explicit_self(method.pe_explicit_self());
+ MethodRibKind
+ }
+ visit::FkFnBlock(..) => ClosureRibKind(node_id)
+ };
+ self.resolve_function(rib_kind, declaration, block);
+ }
}
/// Contains data for specific types of import directives.
// were declared on (type, fn, etc)
ParamSpace,
- // ID of the enclosing item.
- NodeId,
-
// The kind of the rib used for type parameters.
RibKind)
}
// methods. Allow references to ty params that impl or trait
// binds. Disallow any other upvars (including other ty params that are
// upvars).
- // parent; method itself
- MethodRibKind(NodeId, MethodSort),
+ MethodRibKind,
// We passed through an item scope. Disallow upvars.
ItemRibKind,
ConstantItemRibKind
}
-// Methods can be required or provided. RequiredMethod methods only occur in traits.
-#[derive(Copy, Debug)]
-enum MethodSort {
- RequiredMethod,
- ProvidedMethod(NodeId)
-}
-
#[derive(Copy)]
enum UseLexicalScopeFlag {
DontUseLexicalScope,
enum ModuleKind {
NormalModuleKind,
TraitModuleKind,
- ImplModuleKind,
EnumModuleKind,
TypeModuleKind,
AnonymousModuleKind,
value_def: RefCell<Option<ValueNsDef>>, //< Meaning in value namespace.
}
-/// Ways in which a trait can be referenced
-#[derive(Copy)]
-enum TraitReferenceType {
- TraitImplementation, // impl SomeTrait for T { ... }
- TraitDerivation, // trait T : SomeTrait { ... }
- TraitBoundingTypeParameter, // fn f<T:SomeTrait>() { ... }
- TraitObject, // Box<for<'a> SomeTrait>
- TraitQPath, // <T as SomeTrait>::
-}
-
impl NameBindings {
fn new() -> NameBindings {
NameBindings {
graph_root: NameBindings,
- trait_item_map: FnvHashMap<(Name, DefId), TraitItemKind>,
+ trait_item_map: FnvHashMap<(Name, DefId), DefId>,
structs: FnvHashMap<DefId, Vec<Name>>,
export_map: ExportMap,
trait_map: TraitMap,
external_exports: ExternalExports,
- last_private: LastPrivateMap,
// Whether or not to print error messages. Can be set to true
// when getting additional info for error message suggestions,
used_imports: HashSet::new(),
used_crates: HashSet::new(),
external_exports: DefIdSet(),
- last_private: NodeMap(),
emit_errors: true,
make_glob_map: make_glob_map == MakeGlobMap::Yes,
result
}
- fn path_names_to_string(&self, path: &Path) -> String {
- let names: Vec<ast::Name> = path.segments
+ fn path_names_to_string(&self, path: &Path, depth: usize) -> String {
+ let names: Vec<ast::Name> = path.segments[..path.segments.len()-depth]
.iter()
.map(|seg| seg.identifier.name)
.collect();
// record what this import resolves to for later uses in documentation,
// this may resolve to either a value or a type, but for documentation
// purposes it's good enough to just favor one over the other.
- let value_private = match import_resolution.value_target {
- Some(ref target) => {
- let def = target.bindings.def_for_namespace(ValueNS).unwrap();
- self.def_map.borrow_mut().insert(directive.id, def);
- let did = def.def_id();
- if value_used_public {Some(lp)} else {Some(DependsOn(did))}
- },
- // AllPublic here and below is a dummy value, it should never be used because
- // _exists is false.
- None => None,
- };
- let type_private = match import_resolution.type_target {
- Some(ref target) => {
- let def = target.bindings.def_for_namespace(TypeNS).unwrap();
- self.def_map.borrow_mut().insert(directive.id, def);
- let did = def.def_id();
- if type_used_public {Some(lp)} else {Some(DependsOn(did))}
- },
- None => None,
+ let value_def_and_priv = import_resolution.value_target.as_ref().map(|target| {
+ let def = target.bindings.def_for_namespace(ValueNS).unwrap();
+ (def, if value_used_public { lp } else { DependsOn(def.def_id()) })
+ });
+ let type_def_and_priv = import_resolution.type_target.as_ref().map(|target| {
+ let def = target.bindings.def_for_namespace(TypeNS).unwrap();
+ (def, if type_used_public { lp } else { DependsOn(def.def_id()) })
+ });
+
+ let import_lp = LastImport {
+ value_priv: value_def_and_priv.map(|(_, p)| p),
+ value_used: Used,
+ type_priv: type_def_and_priv.map(|(_, p)| p),
+ type_used: Used
};
- self.last_private.insert(directive.id, LastImport{value_priv: value_private,
- value_used: Used,
- type_priv: type_private,
- type_used: Used});
+ if let Some((def, _)) = value_def_and_priv {
+ self.def_map.borrow_mut().insert(directive.id, PathResolution {
+ base_def: def,
+ last_private: import_lp,
+ depth: 0
+ });
+ }
+ if let Some((def, _)) = type_def_and_priv {
+ self.def_map.borrow_mut().insert(directive.id, PathResolution {
+ base_def: def,
+ last_private: import_lp,
+ depth: 0
+ });
+ }
debug!("(resolving single import) successfully resolved import");
return Success(());
}
// Record the destination of this import
- match containing_module.def_id.get() {
- Some(did) => {
- self.def_map.borrow_mut().insert(id, DefMod(did));
- self.last_private.insert(id, lp);
- }
- None => {}
+ if let Some(did) = containing_module.def_id.get() {
+ self.def_map.borrow_mut().insert(id, PathResolution {
+ base_def: DefMod(did),
+ last_private: lp,
+ depth: 0
+ });
}
debug!("(resolving glob import) successfully resolved import");
match import_resolution.value_target {
Some(ref target) if target.shadowable != Shadowable::Always => {
if let Some(ref value) = *name_bindings.value_def.borrow() {
- let msg = format!("import `{}` conflicts with value \
- in this module",
- &token::get_name(name));
- span_err!(self.session, import_span, E0255, "{}", &msg[..]);
+ span_err!(self.session, import_span, E0255,
+ "import `{}` conflicts with value in this module",
+ &token::get_name(name));
if let Some(span) = value.value_span {
- self.session.span_note(span,
- "conflicting value here");
+ self.session.span_note(span, "conflicting value here");
}
}
}
match import_resolution.type_target {
Some(ref target) if target.shadowable != Shadowable::Always => {
if let Some(ref ty) = *name_bindings.type_def.borrow() {
- match ty.module_def {
- None => {
- let msg = format!("import `{}` conflicts with type in \
- this module",
- &token::get_name(name));
- span_err!(self.session, import_span, E0256, "{}", &msg[..]);
- if let Some(span) = ty.type_span {
- self.session.span_note(span,
- "note conflicting type here")
- }
- }
- Some(ref module_def) => {
- match module_def.kind.get() {
- ImplModuleKind => {
- if let Some(span) = ty.type_span {
- let msg = format!("inherent implementations \
- are only allowed on types \
- defined in the current module");
- span_err!(self.session, span, E0257, "{}", &msg[..]);
- self.session.span_note(import_span,
- "import from other module here")
- }
- }
- _ => {
- let msg = format!("import `{}` conflicts with existing \
- submodule",
- &token::get_name(name));
- span_err!(self.session, import_span, E0258, "{}", &msg[..]);
- if let Some(span) = ty.type_span {
- self.session.span_note(span,
- "note conflicting module here")
- }
- }
- }
- }
+ let (what, note) = if ty.module_def.is_some() {
+ ("existing submodule", "note conflicting module here")
+ } else {
+ ("type in this module", "note conflicting type here")
+ };
+ span_err!(self.session, import_span, E0256,
+ "import `{}` conflicts with {}",
+ &token::get_name(name), what);
+ if let Some(span) = ty.type_span {
+ self.session.span_note(span, note);
}
}
}
return Failed(None);
}
TraitModuleKind |
- ImplModuleKind |
EnumModuleKind |
TypeModuleKind |
AnonymousModuleKind => {
match new_module.kind.get() {
NormalModuleKind => return Some(new_module),
TraitModuleKind |
- ImplModuleKind |
EnumModuleKind |
TypeModuleKind |
AnonymousModuleKind => module_ = new_module,
match module_.kind.get() {
NormalModuleKind => return module_,
TraitModuleKind |
- ImplModuleKind |
EnumModuleKind |
TypeModuleKind |
AnonymousModuleKind => {
def_like: DefLike,
span: Span)
-> Option<DefLike> {
- match def_like {
- DlDef(d @ DefUpvar(..)) => {
+ let mut def = match def_like {
+ DlDef(def) => def,
+ _ => return Some(def_like)
+ };
+ match def {
+ DefUpvar(..) => {
self.session.span_bug(span,
- &format!("unexpected {:?} in bindings", d))
+ &format!("unexpected {:?} in bindings", def))
}
- DlDef(d @ DefLocal(_)) => {
- let node_id = d.def_id().node;
- let mut def = d;
+ DefLocal(node_id) => {
for rib in ribs {
match rib.kind {
NormalRibKind => {
}.push(Freevar { def: prev_def, span: span });
seen.insert(node_id);
}
- MethodRibKind(item_id, _) => {
- // If the def is a ty param, and came from the parent
- // item, it's ok
- match def {
- DefTyParam(_, _, did, _) if {
- self.def_map.borrow().get(&did.node).cloned()
- == Some(DefTyParamBinder(item_id))
- } => {} // ok
- DefSelfTy(did) if did == item_id => {} // ok
- _ => {
- // This was an attempt to access an upvar inside a
- // named function item. This is not allowed, so we
- // report an error.
-
- self.resolve_error(
- span,
- "can't capture dynamic environment in a fn item; \
- use the || { ... } closure form instead");
-
- return None;
- }
- }
- }
- ItemRibKind => {
+ ItemRibKind | MethodRibKind => {
// This was an attempt to access an upvar inside a
// named function item. This is not allowed, so we
// report an error.
- self.resolve_error(
- span,
+ self.resolve_error(span,
"can't capture dynamic environment in a fn item; \
- use the || { ... } closure form instead");
-
+ use the || { ... } closure form instead");
return None;
}
ConstantItemRibKind => {
self.resolve_error(span,
"attempt to use a non-constant \
value in a constant");
-
+ return None;
}
}
}
- Some(DlDef(def))
}
- DlDef(def @ DefTyParam(..)) |
- DlDef(def @ DefSelfTy(..)) => {
+ DefTyParam(..) | DefSelfTy(_) => {
for rib in ribs {
match rib.kind {
- NormalRibKind | ClosureRibKind(..) => {
+ NormalRibKind | MethodRibKind | ClosureRibKind(..) => {
// Nothing to do. Continue.
}
- MethodRibKind(item_id, _) => {
- // If the def is a ty param, and came from the parent
- // item, it's ok
- match def {
- DefTyParam(_, _, did, _) if {
- self.def_map.borrow().get(&did.node).cloned()
- == Some(DefTyParamBinder(item_id))
- } => {} // ok
- DefSelfTy(did) if did == item_id => {} // ok
-
- _ => {
- // This was an attempt to use a type parameter outside
- // its scope.
-
- self.resolve_error(span,
- "can't use type parameters from \
- outer function; try using a local \
- type parameter instead");
-
- return None;
- }
- }
- }
ItemRibKind => {
// This was an attempt to use a type parameter outside
// its scope.
"can't use type parameters from \
outer function; try using a local \
type parameter instead");
-
return None;
}
ConstantItemRibKind => {
self.resolve_error(span,
"cannot use an outer type \
parameter in this context");
-
+ return None;
}
}
}
- Some(DlDef(def))
}
- _ => Some(def_like)
+ _ => {}
}
+ Some(DlDef(def))
}
/// Searches the current set of local scopes and
// FIXME #4950: Try caching?
for (i, rib) in ribs.iter().enumerate().rev() {
- match rib.bindings.get(&name).cloned() {
- Some(def_like) => {
- return self.upvarify(&ribs[i + 1..], def_like, span);
- }
- None => {
- // Continue.
- }
+ if let Some(def_like) = rib.bindings.get(&name).cloned() {
+ return self.upvarify(&ribs[i + 1..], def_like, span);
}
}
token::get_name(name));
match item.node {
-
- // enum item: resolve all the variants' discrs,
- // then resolve the ty params
- ItemEnum(ref enum_def, ref generics) => {
+ ItemEnum(_, ref generics) |
+ ItemTy(_, ref generics) |
+ ItemStruct(_, ref generics) => {
self.check_if_primitive_type_name(name, item.span);
- for variant in &(*enum_def).variants {
- if let Some(ref dis_expr) = variant.node.disr_expr {
- // resolve the discriminator expr
- // as a constant
- self.with_constant_rib(|this| {
- this.resolve_expr(&**dis_expr);
- });
- }
- }
-
- // n.b. the discr expr gets visited twice.
- // but maybe it's okay since the first time will signal an
- // error if there is one? -- tjc
self.with_type_parameter_rib(HasTypeParameters(generics,
TypeSpace,
- item.id,
ItemRibKind),
- |this| {
- this.resolve_type_parameters(&generics.ty_params);
- this.resolve_where_clause(&generics.where_clause);
- visit::walk_item(this, item);
- });
+ |this| visit::walk_item(this, item));
}
-
- ItemTy(_, ref generics) => {
- self.check_if_primitive_type_name(name, item.span);
-
+ ItemFn(_, _, _, ref generics, _) => {
self.with_type_parameter_rib(HasTypeParameters(generics,
- TypeSpace,
- item.id,
+ FnSpace,
ItemRibKind),
- |this| {
- this.resolve_type_parameters(&generics.ty_params);
- visit::walk_item(this, item);
- });
+ |this| visit::walk_item(this, item));
}
ItemDefaultImpl(_, ref trait_ref) => {
- self.resolve_trait_reference(item.id, trait_ref, TraitImplementation);
+ self.with_optional_trait_ref(Some(trait_ref), |_| {});
}
ItemImpl(_, _,
ref generics,
ref implemented_traits,
ref self_type,
ref impl_items) => {
- self.resolve_implementation(item.id,
- generics,
+ self.resolve_implementation(generics,
implemented_traits,
&**self_type,
&impl_items[..]);
// Create a new rib for the trait-wide type parameters.
self.with_type_parameter_rib(HasTypeParameters(generics,
TypeSpace,
- item.id,
NormalRibKind),
|this| {
- this.resolve_type_parameters(&generics.ty_params);
- this.resolve_where_clause(&generics.where_clause);
-
- this.resolve_type_parameter_bounds(item.id, bounds,
- TraitDerivation);
+ this.visit_generics(generics);
+ visit::walk_ty_param_bounds_helper(this, bounds);
for trait_item in &(*trait_items) {
// Create a new rib for the trait_item-specific type
//
// FIXME #4951: Do we need a node ID here?
- match *trait_item {
- ast::RequiredMethod(ref ty_m) => {
- this.with_type_parameter_rib
- (HasTypeParameters(&ty_m.generics,
- FnSpace,
- item.id,
- MethodRibKind(item.id, RequiredMethod)),
- |this| {
-
- // Resolve the method-specific type
- // parameters.
- this.resolve_type_parameters(
- &ty_m.generics.ty_params);
- this.resolve_where_clause(&ty_m.generics
- .where_clause);
-
- for argument in &ty_m.decl.inputs {
- this.resolve_type(&*argument.ty);
- }
-
- if let SelfExplicit(ref typ, _) = ty_m.explicit_self.node {
- this.resolve_type(&**typ)
- }
-
- if let ast::Return(ref ret_ty) = ty_m.decl.output {
- this.resolve_type(&**ret_ty);
- }
- });
- }
- ast::ProvidedMethod(ref m) => {
- this.resolve_method(MethodRibKind(item.id,
- ProvidedMethod(m.id)),
- &**m)
- }
- ast::TypeTraitItem(ref data) => {
- this.resolve_type_parameter(&data.ty_param);
- visit::walk_trait_item(this, trait_item);
- }
- }
+ let type_parameters = match *trait_item {
+ ast::RequiredMethod(ref ty_m) => {
+ HasTypeParameters(&ty_m.generics,
+ FnSpace,
+ MethodRibKind)
+ }
+ ast::ProvidedMethod(ref m) => {
+ HasTypeParameters(m.pe_generics(),
+ FnSpace,
+ MethodRibKind)
+ }
+ ast::TypeTraitItem(ref assoc_ty) => {
+ let ty_param = &assoc_ty.ty_param;
+ this.check_if_primitive_type_name(ty_param.ident.name,
+ ty_param.span);
+ NoTypeParameters
+ }
+ };
+ this.with_type_parameter_rib(type_parameters, |this| {
+ visit::walk_trait_item(this, trait_item)
+ });
}
});
self.type_ribs.pop();
}
- ItemStruct(ref struct_def, ref generics) => {
- self.check_if_primitive_type_name(name, item.span);
-
- self.resolve_struct(item.id,
- generics,
- &struct_def.fields);
- }
-
- ItemMod(ref module_) => {
+ ItemMod(_) | ItemForeignMod(_) => {
self.with_scope(Some(name), |this| {
- this.resolve_module(module_, item.span, name,
- item.id);
- });
- }
-
- ItemForeignMod(ref foreign_module) => {
- self.with_scope(Some(name), |this| {
- for foreign_item in &foreign_module.items {
- match foreign_item.node {
- ForeignItemFn(_, ref generics) => {
- this.with_type_parameter_rib(
- HasTypeParameters(
- generics, FnSpace, foreign_item.id,
- ItemRibKind),
- |this| {
- this.resolve_type_parameters(&generics.ty_params);
- this.resolve_where_clause(&generics.where_clause);
- visit::walk_foreign_item(this, &**foreign_item)
- });
- }
- ForeignItemStatic(..) => {
- visit::walk_foreign_item(this,
- &**foreign_item);
- }
- }
- }
+ visit::walk_item(this, item);
});
}
- ItemFn(ref fn_decl, _, _, ref generics, ref block) => {
- self.resolve_function(ItemRibKind,
- Some(&**fn_decl),
- HasTypeParameters
- (generics,
- FnSpace,
- item.id,
- ItemRibKind),
- &**block);
- }
-
ItemConst(..) | ItemStatic(..) => {
self.with_constant_rib(|this| {
visit::walk_item(this, item);
ItemUse(ref view_path) => {
// check for imports shadowing primitive types
if let ast::ViewPathSimple(ident, _) = view_path.node {
- match self.def_map.borrow().get(&item.id) {
- Some(&DefTy(..)) | Some(&DefStruct(..)) | Some(&DefaultImpl(..)) | None => {
+ match self.def_map.borrow().get(&item.id).map(|d| d.full_def()) {
+ Some(DefTy(..)) | Some(DefStruct(..)) | Some(DefTrait(..)) | None => {
self.check_if_primitive_type_name(ident.name, item.span);
}
_ => {}
F: FnOnce(&mut Resolver),
{
match type_parameters {
- HasTypeParameters(generics, space, node_id, rib_kind) => {
+ HasTypeParameters(generics, space, rib_kind) => {
let mut function_type_rib = Rib::new(rib_kind);
let mut seen_bindings = HashSet::new();
for (index, type_parameter) in generics.ty_params.iter().enumerate() {
let name = type_parameter.ident.name;
- debug!("with_type_parameter_rib: {} {}", node_id,
- type_parameter.id);
+ debug!("with_type_parameter_rib: {}", type_parameter.id);
if seen_bindings.contains(&name) {
self.resolve_error(type_parameter.span,
&format!("the name `{}` is already \
- used for a type \
- parameter in this type \
- parameter list",
- token::get_name(
- name)))
+ used for a type \
+ parameter in this type \
+ parameter list",
+ token::get_name(name)))
}
seen_bindings.insert(name);
- let def_like = DlDef(DefTyParam(space,
- index as u32,
- local_def(type_parameter.id),
- name));
- // Associate this type parameter with
- // the item that bound it
- self.record_def(type_parameter.id,
- (DefTyParamBinder(node_id), LastMod(AllPublic)));
// plain insert (no renaming)
- function_type_rib.bindings.insert(name, def_like);
+ function_type_rib.bindings.insert(name,
+ DlDef(DefTyParam(space,
+ index as u32,
+ local_def(type_parameter.id),
+ name)));
}
self.type_ribs.push(function_type_rib);
}
fn resolve_function(&mut self,
rib_kind: RibKind,
- optional_declaration: Option<&FnDecl>,
- type_parameters: TypeParameters,
+ declaration: &FnDecl,
block: &Block) {
// Create a value rib for the function.
- let function_value_rib = Rib::new(rib_kind);
- self.value_ribs.push(function_value_rib);
+ self.value_ribs.push(Rib::new(rib_kind));
// Create a label rib for the function.
- let function_label_rib = Rib::new(rib_kind);
- self.label_ribs.push(function_label_rib);
+ self.label_ribs.push(Rib::new(rib_kind));
- // If this function has type parameters, add them now.
- self.with_type_parameter_rib(type_parameters, |this| {
- // Resolve the type parameters.
- match type_parameters {
- NoTypeParameters => {
- // Continue.
- }
- HasTypeParameters(ref generics, _, _, _) => {
- this.resolve_type_parameters(&generics.ty_params);
- this.resolve_where_clause(&generics.where_clause);
- }
- }
-
- // Add each argument to the rib.
- match optional_declaration {
- None => {
- // Nothing to do.
- }
- Some(declaration) => {
- let mut bindings_list = HashMap::new();
- for argument in &declaration.inputs {
- this.resolve_pattern(&*argument.pat,
- ArgumentIrrefutableMode,
- &mut bindings_list);
-
- this.resolve_type(&*argument.ty);
+ // Add each argument to the rib.
+ let mut bindings_list = HashMap::new();
+ for argument in &declaration.inputs {
+ self.resolve_pattern(&*argument.pat,
+ ArgumentIrrefutableMode,
+ &mut bindings_list);
- debug!("(resolving function) recorded argument");
- }
+ self.visit_ty(&*argument.ty);
- if let ast::Return(ref ret_ty) = declaration.output {
- this.resolve_type(&**ret_ty);
- }
- }
- }
+ debug!("(resolving function) recorded argument");
+ }
+ visit::walk_fn_ret_ty(self, &declaration.output);
- // Resolve the function body.
- this.resolve_block(&*block);
+ // Resolve the function body.
+ self.visit_block(&*block);
- debug!("(resolving function) leaving function");
- });
+ debug!("(resolving function) leaving function");
self.label_ribs.pop();
self.value_ribs.pop();
}
- fn resolve_type_parameters(&mut self,
- type_parameters: &OwnedSlice<TyParam>) {
- for type_parameter in &**type_parameters {
- self.resolve_type_parameter(type_parameter);
- }
- }
-
- fn resolve_type_parameter(&mut self,
- type_parameter: &TyParam) {
- self.check_if_primitive_type_name(type_parameter.ident.name, type_parameter.span);
- for bound in &*type_parameter.bounds {
- self.resolve_type_parameter_bound(type_parameter.id, bound,
- TraitBoundingTypeParameter);
- }
- match type_parameter.default {
- Some(ref ty) => self.resolve_type(&**ty),
- None => {}
- }
- }
-
- fn resolve_type_parameter_bounds(&mut self,
- id: NodeId,
- type_parameter_bounds: &OwnedSlice<TyParamBound>,
- reference_type: TraitReferenceType) {
- for type_parameter_bound in &**type_parameter_bounds {
- self.resolve_type_parameter_bound(id, type_parameter_bound,
- reference_type);
- }
- }
-
- fn resolve_type_parameter_bound(&mut self,
- id: NodeId,
- type_parameter_bound: &TyParamBound,
- reference_type: TraitReferenceType) {
- match *type_parameter_bound {
- TraitTyParamBound(ref tref, _) => {
- self.resolve_poly_trait_reference(id, tref, reference_type)
- }
- RegionTyParamBound(..) => {}
- }
- }
-
- fn resolve_poly_trait_reference(&mut self,
- id: NodeId,
- poly_trait_reference: &PolyTraitRef,
- reference_type: TraitReferenceType) {
- self.resolve_trait_reference(id, &poly_trait_reference.trait_ref, reference_type)
- }
-
fn resolve_trait_reference(&mut self,
id: NodeId,
- trait_reference: &TraitRef,
- reference_type: TraitReferenceType) {
- match self.resolve_path(id, &trait_reference.path, TypeNS, true) {
- None => {
- let path_str = self.path_names_to_string(&trait_reference.path);
- let usage_str = match reference_type {
- TraitBoundingTypeParameter => "bound type parameter with",
- TraitImplementation => "implement",
- TraitDerivation => "derive",
- TraitObject => "reference",
- TraitQPath => "extract an associated item from",
- };
-
- let msg = format!("attempt to {} a nonexistent trait `{}`", usage_str, path_str);
- self.resolve_error(trait_reference.path.span, &msg[..]);
- }
- Some(def) => {
- match def {
- (DefaultImpl(_), _) => {
- debug!("(resolving trait) found trait def: {:?}", def);
- self.record_def(trait_reference.ref_id, def);
- }
- (def, _) => {
- self.resolve_error(trait_reference.path.span,
- &format!("`{}` is not a trait",
- self.path_names_to_string(
- &trait_reference.path)));
-
- // If it's a typedef, give a note
- if let DefTy(..) = def {
- self.session.span_note(
- trait_reference.path.span,
- &format!("`type` aliases cannot be used for traits")
- );
- }
- }
+ trait_path: &Path,
+ path_depth: usize)
+ -> Result<PathResolution, ()> {
+ if let Some(path_res) = self.resolve_path(id, trait_path, path_depth, TypeNS, true) {
+ if let DefTrait(_) = path_res.base_def {
+ debug!("(resolving trait) found trait def: {:?}", path_res);
+ Ok(path_res)
+ } else {
+ self.resolve_error(trait_path.span,
+ &format!("`{}` is not a trait",
+ self.path_names_to_string(trait_path, path_depth)));
+
+ // If it's a typedef, give a note
+ if let DefTy(..) = path_res.base_def {
+ self.session.span_note(trait_path.span,
+ "`type` aliases cannot be used for traits");
}
+ Err(())
}
+ } else {
+ let msg = format!("use of undeclared trait name `{}`",
+ self.path_names_to_string(trait_path, path_depth));
+ self.resolve_error(trait_path.span, &msg);
+ Err(())
}
}
- fn resolve_where_clause(&mut self, where_clause: &ast::WhereClause) {
- for predicate in &where_clause.predicates {
+ fn resolve_generics(&mut self, generics: &Generics) {
+ for type_parameter in &*generics.ty_params {
+ self.check_if_primitive_type_name(type_parameter.ident.name, type_parameter.span);
+ }
+ for predicate in &generics.where_clause.predicates {
match predicate {
- &ast::WherePredicate::BoundPredicate(ref bound_pred) => {
- self.resolve_type(&*bound_pred.bounded_ty);
-
- for bound in &*bound_pred.bounds {
- self.resolve_type_parameter_bound(bound_pred.bounded_ty.id, bound,
- TraitBoundingTypeParameter);
- }
- }
+ &ast::WherePredicate::BoundPredicate(_) |
&ast::WherePredicate::RegionPredicate(_) => {}
&ast::WherePredicate::EqPredicate(ref eq_pred) => {
- match self.resolve_path(eq_pred.id, &eq_pred.path, TypeNS, true) {
- Some((def @ DefTyParam(..), last_private)) => {
- self.record_def(eq_pred.id, (def, last_private));
- }
- _ => {
- self.resolve_error(eq_pred.path.span,
- "undeclared associated type");
- }
+ let path_res = self.resolve_path(eq_pred.id, &eq_pred.path, 0, TypeNS, true);
+ if let Some(PathResolution { base_def: DefTyParam(..), .. }) = path_res {
+ self.record_def(eq_pred.id, path_res.unwrap());
+ } else {
+ self.resolve_error(eq_pred.path.span, "undeclared associated type");
}
-
- self.resolve_type(&*eq_pred.ty);
}
}
}
- }
-
- fn resolve_struct(&mut self,
- id: NodeId,
- generics: &Generics,
- fields: &[StructField]) {
- // If applicable, create a rib for the type parameters.
- self.with_type_parameter_rib(HasTypeParameters(generics,
- TypeSpace,
- id,
- ItemRibKind),
- |this| {
- // Resolve the type parameters.
- this.resolve_type_parameters(&generics.ty_params);
- this.resolve_where_clause(&generics.where_clause);
-
- // Resolve fields.
- for field in fields {
- this.resolve_type(&*field.node.ty);
- }
- });
- }
-
- // Does this really need to take a RibKind or is it always going
- // to be NormalRibKind?
- fn resolve_method(&mut self,
- rib_kind: RibKind,
- method: &ast::Method) {
- let method_generics = method.pe_generics();
- let type_parameters = HasTypeParameters(method_generics,
- FnSpace,
- method.id,
- rib_kind);
-
- if let SelfExplicit(ref typ, _) = method.pe_explicit_self().node {
- self.resolve_type(&**typ);
- }
-
- self.resolve_function(rib_kind,
- Some(method.pe_fn_decl()),
- type_parameters,
- method.pe_body());
+ visit::walk_generics(self, generics);
}
fn with_current_self_type<T, F>(&mut self, self_type: &Ty, f: F) -> T where
result
}
- fn with_optional_trait_ref<T, F>(&mut self, id: NodeId,
- opt_trait_ref: &Option<TraitRef>,
+ fn with_optional_trait_ref<T, F>(&mut self,
+ opt_trait_ref: Option<&TraitRef>,
f: F) -> T where
F: FnOnce(&mut Resolver) -> T,
{
- let new_val = match *opt_trait_ref {
- Some(ref trait_ref) => {
- self.resolve_trait_reference(id, trait_ref, TraitImplementation);
-
- match self.def_map.borrow().get(&trait_ref.ref_id) {
- Some(def) => {
- let did = def.def_id();
- Some((did, trait_ref.clone()))
- }
- None => None
+ let mut new_val = None;
+ if let Some(trait_ref) = opt_trait_ref {
+ match self.resolve_trait_reference(trait_ref.ref_id, &trait_ref.path, 0) {
+ Ok(path_res) => {
+ self.record_def(trait_ref.ref_id, path_res);
+ new_val = Some((path_res.base_def.def_id(), trait_ref.clone()));
}
+ Err(_) => { /* error was already reported */ }
}
- None => None
- };
+ visit::walk_trait_ref(self, trait_ref);
+ }
let original_trait_ref = replace(&mut self.current_trait_ref, new_val);
let result = f(self);
self.current_trait_ref = original_trait_ref;
}
fn resolve_implementation(&mut self,
- id: NodeId,
generics: &Generics,
opt_trait_reference: &Option<TraitRef>,
self_type: &Ty,
// If applicable, create a rib for the type parameters.
self.with_type_parameter_rib(HasTypeParameters(generics,
TypeSpace,
- id,
- NormalRibKind),
+ ItemRibKind),
|this| {
// Resolve the type parameters.
- this.resolve_type_parameters(&generics.ty_params);
- this.resolve_where_clause(&generics.where_clause);
+ this.visit_generics(generics);
// Resolve the trait reference, if necessary.
- this.with_optional_trait_ref(id, opt_trait_reference, |this| {
+ this.with_optional_trait_ref(opt_trait_reference.as_ref(), |this| {
// Resolve the self type.
- this.resolve_type(self_type);
+ this.visit_ty(self_type);
this.with_current_self_type(self_type, |this| {
for impl_item in impl_items {
// We also need a new scope for the method-
// specific type parameters.
- this.resolve_method(
- MethodRibKind(id, ProvidedMethod(method.id)),
- &**method);
+ let type_parameters =
+ HasTypeParameters(method.pe_generics(),
+ FnSpace,
+ MethodRibKind);
+ this.with_type_parameter_rib(type_parameters, |this| {
+ visit::walk_method_helper(this, &**method);
+ });
}
TypeImplItem(ref typedef) => {
// If this is a trait impl, ensure the method
this.check_trait_item(typedef.ident.name,
typedef.span);
- this.resolve_type(&*typedef.typ);
+ this.visit_ty(&*typedef.typ);
}
}
}
});
});
});
-
- // Check that the current type is indeed a type, if we have an anonymous impl
- if opt_trait_reference.is_none() {
- match self_type.node {
- // TyPath is the only thing that we handled in `build_reduced_graph_for_item`,
- // where we created a module with the name of the type in order to implement
- // an anonymous trait. In the case that the path does not resolve to an actual
- // type, the result will be that the type name resolves to a module but not
- // a type (shadowing any imported modules or types with this name), leading
- // to weird user-visible bugs. So we ward this off here. See #15060.
- TyPath(ref path, path_id) => {
- match self.def_map.borrow().get(&path_id) {
- // FIXME: should we catch other options and give more precise errors?
- Some(&DefMod(_)) => {
- self.resolve_error(path.span, "inherent implementations are not \
- allowed for types not defined in \
- the current module");
- }
- _ => {}
- }
- }
- _ => { }
- }
- }
}
fn check_trait_item(&self, name: Name, span: Span) {
// If there is a TraitRef in scope for an impl, then the method must be in the trait.
if let Some((did, ref trait_ref)) = self.current_trait_ref {
- if self.trait_item_map.get(&(name, did)).is_none() {
- let path_str = self.path_names_to_string(&trait_ref.path);
+ if !self.trait_item_map.contains_key(&(name, did)) {
+ let path_str = self.path_names_to_string(&trait_ref.path, 0);
self.resolve_error(span,
&format!("method `{}` is not a member of trait `{}`",
token::get_name(name),
}
}
- fn resolve_module(&mut self, module: &Mod, _span: Span,
- _name: Name, id: NodeId) {
- // Write the implementations in scope into the module metadata.
- debug!("(resolving module) resolving module ID {}", id);
- visit::walk_mod(self, module);
- }
-
fn resolve_local(&mut self, local: &Local) {
// Resolve the type.
- if let Some(ref ty) = local.ty {
- self.resolve_type(&**ty);
- }
+ visit::walk_ty_opt(self, &local.ty);
- // Resolve the initializer, if necessary.
- match local.init {
- None => {
- // Nothing to do.
- }
- Some(ref initializer) => {
- self.resolve_expr(&**initializer);
- }
- }
+ // Resolve the initializer.
+ visit::walk_expr_opt(self, &local.init);
// Resolve the pattern.
- let mut bindings_list = HashMap::new();
self.resolve_pattern(&*local.pat,
LocalIrrefutableMode,
- &mut bindings_list);
+ &mut HashMap::new());
}
// build a map from pattern identifiers to binding-info's.
self.check_consistent_bindings(arm);
visit::walk_expr_opt(self, &arm.guard);
- self.resolve_expr(&*arm.body);
+ self.visit_expr(&*arm.body);
self.value_ribs.pop();
}
fn resolve_type(&mut self, ty: &Ty) {
match ty.node {
- // Like path expressions, the interpretation of path types depends
- // on whether the path has multiple elements in it or not.
+ // `<T>::a::b::c` is resolved by typeck alone.
+ TyPath(Some(ast::QSelf { position: 0, .. }), _) => {}
+
+ TyPath(ref maybe_qself, ref path) => {
+ let max_assoc_types = if let Some(ref qself) = *maybe_qself {
+ // Make sure the trait is valid.
+ let _ = self.resolve_trait_reference(ty.id, path, 1);
+ path.segments.len() - qself.position
+ } else {
+ path.segments.len()
+ };
- TyPath(ref path, path_id) => {
- // This is a path in the type namespace. Walk through scopes
- // looking for it.
- let mut result_def = None;
-
- // First, check to see whether the name is a primitive type.
- if path.segments.len() == 1 {
- let id = path.segments.last().unwrap().identifier;
-
- match self.primitive_type_table
- .primitive_types
- .get(&id.name) {
-
- Some(&primitive_type) => {
- result_def =
- Some((DefPrimTy(primitive_type), LastMod(AllPublic)));
-
- if path.segments[0].parameters.has_lifetimes() {
- span_err!(self.session, path.span, E0157,
- "lifetime parameters are not allowed on this type");
- } else if !path.segments[0].parameters.is_empty() {
- span_err!(self.session, path.span, E0153,
- "type parameters are not allowed on this type");
- }
- }
- None => {
- // Continue.
- }
+ let mut resolution = None;
+ for depth in 0..max_assoc_types {
+ self.with_no_errors(|this| {
+ resolution = this.resolve_path(ty.id, path, depth, TypeNS, true);
+ });
+ if resolution.is_some() {
+ break;
}
}
-
- if let None = result_def {
- result_def = self.resolve_path(ty.id, path, TypeNS, true);
+ if let Some(DefMod(_)) = resolution.map(|r| r.base_def) {
+ // A module is not a valid type.
+ resolution = None;
}
- match result_def {
+ // This is a path in the type namespace. Walk through scopes
+ // looking for it.
+ match resolution {
Some(def) => {
// Write the result into the def map.
debug!("(resolving type) writing resolution for `{}` \
(id {}) = {:?}",
- self.path_names_to_string(path),
- path_id, def);
- self.record_def(path_id, def);
+ self.path_names_to_string(path, 0),
+ ty.id, def);
+ self.record_def(ty.id, def);
}
None => {
- let msg = format!("use of undeclared type name `{}`",
- self.path_names_to_string(path));
- self.resolve_error(ty.span, &msg[..]);
- }
- }
- }
+ // Keep reporting some errors even if they're ignored above.
+ self.resolve_path(ty.id, path, 0, TypeNS, true);
- TyObjectSum(ref ty, ref bound_vec) => {
- self.resolve_type(&**ty);
- self.resolve_type_parameter_bounds(ty.id, bound_vec,
- TraitBoundingTypeParameter);
- }
+ let kind = if maybe_qself.is_some() {
+ "associated type"
+ } else {
+ "type name"
+ };
- TyQPath(ref qpath) => {
- self.resolve_type(&*qpath.self_type);
- self.resolve_trait_reference(ty.id, &*qpath.trait_ref, TraitQPath);
- for ty in qpath.item_path.parameters.types() {
- self.resolve_type(&**ty);
- }
- for binding in qpath.item_path.parameters.bindings() {
- self.resolve_type(&*binding.ty);
+ let msg = format!("use of undeclared {} `{}`", kind,
+ self.path_names_to_string(path, 0));
+ self.resolve_error(ty.span, &msg[..]);
+ }
}
}
-
- TyPolyTraitRef(ref bounds) => {
- self.resolve_type_parameter_bounds(
- ty.id,
- bounds,
- TraitObject);
- visit::walk_ty(self, ty);
- }
- _ => {
- // Just resolve embedded types.
- visit::walk_ty(self, ty);
- }
+ _ => {}
}
+ // Resolve embedded types.
+ visit::walk_ty(self, ty);
}
fn resolve_pattern(&mut self,
let renamed = mtwt::resolve(ident);
match self.resolve_bare_identifier_pattern(ident.name, pattern.span) {
- FoundStructOrEnumVariant(ref def, lp)
+ FoundStructOrEnumVariant(def, lp)
if mode == RefutableMode => {
debug!("(resolving pattern) resolving `{}` to \
struct or enum variant",
pattern,
binding_mode,
"an enum variant");
- self.record_def(pattern.id, (def.clone(), lp));
+ self.record_def(pattern.id, PathResolution {
+ base_def: def,
+ last_private: lp,
+ depth: 0
+ });
}
FoundStructOrEnumVariant(..) => {
self.resolve_error(
scope",
token::get_name(renamed)));
}
- FoundConst(ref def, lp) if mode == RefutableMode => {
+ FoundConst(def, lp) if mode == RefutableMode => {
debug!("(resolving pattern) resolving `{}` to \
constant",
token::get_name(renamed));
pattern,
binding_mode,
"a constant");
- self.record_def(pattern.id, (def.clone(), lp));
+ self.record_def(pattern.id, PathResolution {
+ base_def: def,
+ last_private: lp,
+ depth: 0
+ });
}
FoundConst(..) => {
self.resolve_error(pattern.span,
// will be able to distinguish variants from
// locals in patterns.
- self.record_def(pattern.id, (def, LastMod(AllPublic)));
+ self.record_def(pattern.id, PathResolution {
+ base_def: def,
+ last_private: LastMod(AllPublic),
+ depth: 0
+ });
// Add the binding to the local ribs, if it
// doesn't already exist in the bindings list. (We
PatEnum(ref path, _) => {
// This must be an enum variant, struct or const.
- match self.resolve_path(pat_id, path, ValueNS, false) {
- Some(def @ (DefVariant(..), _)) |
- Some(def @ (DefStruct(..), _)) |
- Some(def @ (DefConst(..), _)) => {
- self.record_def(pattern.id, def);
- }
- Some((DefStatic(..), _)) => {
- self.resolve_error(path.span,
- "static variables cannot be \
- referenced in a pattern, \
- use a `const` instead");
- }
- Some(_) => {
- self.resolve_error(path.span,
- &format!("`{}` is not an enum variant, struct or const",
- token::get_ident(
- path.segments.last().unwrap().identifier)));
- }
- None => {
- self.resolve_error(path.span,
- &format!("unresolved enum variant, struct or const `{}`",
- token::get_ident(path.segments.last().unwrap().identifier)));
+ if let Some(path_res) = self.resolve_path(pat_id, path, 0, ValueNS, false) {
+ match path_res.base_def {
+ DefVariant(..) | DefStruct(..) | DefConst(..) => {
+ self.record_def(pattern.id, path_res);
+ }
+ DefStatic(..) => {
+ self.resolve_error(path.span,
+ "static variables cannot be \
+ referenced in a pattern, \
+ use a `const` instead");
+ }
+ _ => {
+ self.resolve_error(path.span,
+ &format!("`{}` is not an enum variant, struct or const",
+ token::get_ident(
+ path.segments.last().unwrap().identifier)));
+ }
}
+ } else {
+ self.resolve_error(path.span,
+ &format!("unresolved enum variant, struct or const `{}`",
+ token::get_ident(path.segments.last().unwrap().identifier)));
}
-
- // Check the types in the path pattern.
- for ty in path.segments
- .iter()
- .flat_map(|s| s.parameters.types().into_iter()) {
- self.resolve_type(&**ty);
- }
- }
-
- PatLit(ref expr) => {
- self.resolve_expr(&**expr);
- }
-
- PatRange(ref first_expr, ref last_expr) => {
- self.resolve_expr(&**first_expr);
- self.resolve_expr(&**last_expr);
+ visit::walk_path(self, path);
}
PatStruct(ref path, _, _) => {
- match self.resolve_path(pat_id, path, TypeNS, false) {
+ match self.resolve_path(pat_id, path, 0, TypeNS, false) {
Some(definition) => {
self.record_def(pattern.id, definition);
}
debug!("(resolving pattern) didn't find struct \
def: {:?}", result);
let msg = format!("`{}` does not name a structure",
- self.path_names_to_string(path));
+ self.path_names_to_string(path, 0));
self.resolve_error(path.span, &msg[..]);
}
}
+ visit::walk_path(self, path);
+ }
+
+ PatLit(_) | PatRange(..) => {
+ visit::walk_pat(self, pattern);
}
_ => {
/// If `check_ribs` is true, checks the local definitions first; i.e.
/// doesn't skip straight to the containing module.
+ /// Skips `path_depth` trailing segments, which is also reflected in the
+ /// returned value. See `middle::def::PathResolution` for more info.
fn resolve_path(&mut self,
id: NodeId,
path: &Path,
+ path_depth: usize,
namespace: Namespace,
- check_ribs: bool) -> Option<(Def, LastPrivate)> {
- // First, resolve the types and associated type bindings.
- for ty in path.segments.iter().flat_map(|s| s.parameters.types().into_iter()) {
- self.resolve_type(&**ty);
- }
- for binding in path.segments.iter().flat_map(|s| s.parameters.bindings().into_iter()) {
- self.resolve_type(&*binding.ty);
- }
-
- // A special case for sugared associated type paths `T::A` where `T` is
- // a type parameter and `A` is an associated type on some bound of `T`.
- if namespace == TypeNS && path.segments.len() == 2 {
- match self.resolve_identifier(path.segments[0].identifier,
- TypeNS,
- true,
- path.span) {
- Some((def, last_private)) => {
- match def {
- DefTyParam(_, _, did, _) => {
- let def = DefAssociatedPath(TyParamProvenance::FromParam(did),
- path.segments.last()
- .unwrap().identifier);
- return Some((def, last_private));
- }
- DefSelfTy(nid) => {
- let def = DefAssociatedPath(TyParamProvenance::FromSelf(local_def(nid)),
- path.segments.last()
- .unwrap().identifier);
- return Some((def, last_private));
- }
- _ => {}
- }
- }
- _ => {}
- }
- }
+ check_ribs: bool) -> Option<PathResolution> {
+ let span = path.span;
+ let segments = &path.segments[..path.segments.len()-path_depth];
+
+ let mk_res = |(def, lp)| PathResolution {
+ base_def: def,
+ last_private: lp,
+ depth: path_depth
+ };
if path.global {
- return self.resolve_crate_relative_path(path, namespace);
+ let def = self.resolve_crate_relative_path(span, segments, namespace);
+ return def.map(mk_res);
}
// Try to find a path to an item in a module.
let unqualified_def =
- self.resolve_identifier(path.segments.last().unwrap().identifier,
+ self.resolve_identifier(segments.last().unwrap().identifier,
namespace,
check_ribs,
- path.span);
+ span);
- if path.segments.len() > 1 {
- let def = self.resolve_module_relative_path(path, namespace);
+ if segments.len() > 1 {
+ let def = self.resolve_module_relative_path(span, segments, namespace);
match (def, unqualified_def) {
(Some((ref d, _)), Some((ref ud, _))) if *d == *ud => {
self.session
.add_lint(lint::builtin::UNUSED_QUALIFICATIONS,
- id,
- path.span,
+ id, span,
"unnecessary qualification".to_string());
}
_ => ()
}
- return def;
+ def.map(mk_res)
+ } else {
+ unqualified_def.map(mk_res)
}
-
- return unqualified_def;
}
// resolve a single identifier (used as a varref)
check_ribs: bool,
span: Span)
-> Option<(Def, LastPrivate)> {
+ // First, check to see whether the name is a primitive type.
+ if namespace == TypeNS {
+ if let Some(&prim_ty) = self.primitive_type_table
+ .primitive_types
+ .get(&identifier.name) {
+ return Some((DefPrimTy(prim_ty), LastMod(AllPublic)));
+ }
+ }
+
if check_ribs {
- match self.resolve_identifier_in_local_ribs(identifier,
- namespace,
- span) {
- Some(def) => {
- return Some((def, LastMod(AllPublic)));
- }
- None => {
- // Continue.
- }
+ if let Some(def) = self.resolve_identifier_in_local_ribs(identifier,
+ namespace,
+ span) {
+ return Some((def, LastMod(AllPublic)));
}
}
- return self.resolve_item_by_name_in_lexical_scope(identifier.name, namespace);
+ self.resolve_item_by_name_in_lexical_scope(identifier.name, namespace)
}
// FIXME #4952: Merge me with resolve_name_in_module?
// resolve a "module-relative" path, e.g. a::b::c
fn resolve_module_relative_path(&mut self,
- path: &Path,
+ span: Span,
+ segments: &[ast::PathSegment],
namespace: Namespace)
-> Option<(Def, LastPrivate)> {
- let module_path = path.segments.init().iter()
- .map(|ps| ps.identifier.name)
- .collect::<Vec<_>>();
+ let module_path = segments.init().iter()
+ .map(|ps| ps.identifier.name)
+ .collect::<Vec<_>>();
let containing_module;
let last_private;
match self.resolve_module_path(module,
&module_path[..],
UseLexicalScope,
- path.span,
+ span,
PathSearch) {
Failed(err) => {
let (span, msg) = match err {
None => {
let msg = format!("Use of undeclared type or module `{}`",
self.names_to_string(&module_path));
- (path.span, msg)
+ (span, msg)
}
};
}
}
- let name = path.segments.last().unwrap().identifier.name;
+ let name = segments.last().unwrap().identifier.name;
let def = match self.resolve_definition_of_name_in_module(containing_module.clone(),
name,
namespace) {
/// Invariant: This must be called only during main resolution, not during
/// import resolution.
fn resolve_crate_relative_path(&mut self,
- path: &Path,
+ span: Span,
+ segments: &[ast::PathSegment],
namespace: Namespace)
-> Option<(Def, LastPrivate)> {
- let module_path = path.segments.init().iter()
- .map(|ps| ps.identifier.name)
- .collect::<Vec<_>>();
+ let module_path = segments.init().iter()
+ .map(|ps| ps.identifier.name)
+ .collect::<Vec<_>>();
let root_module = self.graph_root.get_module();
match self.resolve_module_path_from_root(root_module,
&module_path[..],
0,
- path.span,
+ span,
PathSearch,
LastMod(AllPublic)) {
Failed(err) => {
None => {
let msg = format!("Use of undeclared module `::{}`",
self.names_to_string(&module_path[..]));
- (path.span, msg)
+ (span, msg)
}
};
}
}
- let name = path.segments.last().unwrap().identifier.name;
+ let name = segments.last().unwrap().identifier.name;
match self.resolve_definition_of_name_in_module(containing_module,
name,
namespace) {
local: {:?}",
token::get_ident(ident),
def);
- return Some(def);
+ Some(def)
}
Some(DlField) | Some(DlImpl(_)) | None => {
- return None;
+ None
}
}
}
fn extract_path_and_node_id(t: &Ty, allow: FallbackChecks)
-> Option<(Path, NodeId, FallbackChecks)> {
match t.node {
- TyPath(ref path, node_id) => Some((path.clone(), node_id, allow)),
+ TyPath(None, ref path) => Some((path.clone(), t.id, allow)),
TyPtr(ref mut_ty) => extract_path_and_node_id(&*mut_ty.ty, OnlyTraitAndStatics),
TyRptr(_, ref mut_ty) => extract_path_and_node_id(&*mut_ty.ty, allow),
// This doesn't handle the remaining `Ty` variants as they are not
}
}
+ fn is_static_method(this: &Resolver, did: DefId) -> bool {
+ if did.krate == ast::LOCAL_CRATE {
+ let explicit_self = match this.ast_map.get(did.node) {
+ ast_map::NodeTraitItem(m) => match *m {
+ ast::RequiredMethod(ref m) => &m.explicit_self,
+ ast::ProvidedMethod(ref m) => m.pe_explicit_self(),
+ _ => return false
+ },
+ ast_map::NodeImplItem(m) => match *m {
+ ast::MethodImplItem(ref m) => m.pe_explicit_self(),
+ _ => return false
+ },
+ _ => return false
+ };
+ explicit_self.node == ast::SelfStatic
+ } else {
+ csearch::is_static_method(&this.session.cstore, did)
+ }
+ }
+
let (path, node_id, allowed) = match self.current_self_type {
Some(ref ty) => match extract_path_and_node_id(ty, Everything) {
Some(x) => x,
if allowed == Everything {
// Look for a field with the same name in the current self_type.
- match self.def_map.borrow().get(&node_id) {
- Some(&DefTy(did, _))
- | Some(&DefStruct(did))
- | Some(&DefVariant(_, did, _)) => match self.structs.get(&did) {
+ match self.def_map.borrow().get(&node_id).map(|d| d.full_def()) {
+ Some(DefTy(did, _)) |
+ Some(DefStruct(did)) |
+ Some(DefVariant(_, did, _)) => match self.structs.get(&did) {
None => {}
Some(fields) => {
if fields.iter().any(|&field_name| name == field_name) {
let name_path = path.segments.iter().map(|seg| seg.identifier.name).collect::<Vec<_>>();
// Look for a method in the current self type's impl module.
- match get_module(self, path.span, &name_path[..]) {
- Some(module) => match module.children.borrow().get(&name) {
- Some(binding) => {
- let p_str = self.path_names_to_string(&path);
- match binding.def_for_namespace(ValueNS) {
- Some(DefStaticMethod(_, provenance)) => {
- match provenance {
- FromImpl(_) => return StaticMethod(p_str),
- FromTrait(_) => unreachable!()
- }
- }
- Some(DefMethod(_, None, _)) if allowed == Everything => return Method,
- Some(DefMethod(_, Some(_), _)) => return TraitItem,
- _ => ()
+ if let Some(module) = get_module(self, path.span, &name_path) {
+ if let Some(binding) = module.children.borrow().get(&name) {
+ if let Some(DefMethod(did, _)) = binding.def_for_namespace(ValueNS) {
+ if is_static_method(self, did) {
+ return StaticMethod(self.path_names_to_string(&path, 0))
+ }
+ if self.current_trait_ref.is_some() {
+ return TraitItem;
+ } else if allowed == Everything {
+ return Method;
}
}
- None => {}
- },
- None => {}
+ }
}
// Look for a method in the current trait.
- match self.current_trait_ref {
- Some((did, ref trait_ref)) => {
- let path_str = self.path_names_to_string(&trait_ref.path);
-
- match self.trait_item_map.get(&(name, did)) {
- Some(&StaticMethodTraitItemKind) => {
- return TraitMethod(path_str)
- }
- Some(_) => return TraitItem,
- None => {}
+ if let Some((trait_did, ref trait_ref)) = self.current_trait_ref {
+ if let Some(&did) = self.trait_item_map.get(&(name, trait_did)) {
+ if is_static_method(self, did) {
+ return TraitMethod(self.path_names_to_string(&trait_ref.path, 0));
+ } else {
+ return TraitItem;
}
}
- None => {}
}
NoSuggestion
// Next, resolve the node.
match expr.node {
- // The interpretation of paths depends on whether the path has
- // multiple elements in it or not.
-
- ExprPath(_) | ExprQPath(_) => {
- let mut path_from_qpath;
- let path = match expr.node {
- ExprPath(ref path) => path,
- ExprQPath(ref qpath) => {
- self.resolve_type(&*qpath.self_type);
- self.resolve_trait_reference(expr.id, &*qpath.trait_ref, TraitQPath);
- path_from_qpath = qpath.trait_ref.path.clone();
- path_from_qpath.segments.push(qpath.item_path.clone());
- &path_from_qpath
- }
- _ => unreachable!()
+ // `<T>::a::b::c` is resolved by typeck alone.
+ ExprPath(Some(ast::QSelf { position: 0, .. }), ref path) => {
+ let method_name = path.segments.last().unwrap().identifier.name;
+ let traits = self.search_for_traits_containing_method(method_name);
+ self.trait_map.insert(expr.id, traits);
+ visit::walk_expr(self, expr);
+ }
+
+ ExprPath(ref maybe_qself, ref path) => {
+ let max_assoc_types = if let Some(ref qself) = *maybe_qself {
+ // Make sure the trait is valid.
+ let _ = self.resolve_trait_reference(expr.id, path, 1);
+ path.segments.len() - qself.position
+ } else {
+ path.segments.len()
};
+
+ let mut resolution = self.with_no_errors(|this| {
+ this.resolve_path(expr.id, path, 0, ValueNS, true)
+ });
+ for depth in 1..max_assoc_types {
+ if resolution.is_some() {
+ break;
+ }
+ self.with_no_errors(|this| {
+ resolution = this.resolve_path(expr.id, path, depth, TypeNS, true);
+ });
+ }
+ if let Some(DefMod(_)) = resolution.map(|r| r.base_def) {
+ // A module is not a valid type or value.
+ resolution = None;
+ }
+
// This is a local path in the value namespace. Walk through
// scopes looking for it.
- match self.resolve_path(expr.id, path, ValueNS, true) {
+ if let Some(path_res) = resolution {
// Check if struct variant
- Some((DefVariant(_, _, true), _)) => {
- let path_name = self.path_names_to_string(path);
+ if let DefVariant(_, _, true) = path_res.base_def {
+ let path_name = self.path_names_to_string(path, 0);
self.resolve_error(expr.span,
&format!("`{}` is a struct variant name, but \
this expression \
&format!("Did you mean to write: \
`{} {{ /* fields */ }}`?",
path_name));
- }
- Some(def) => {
+ } else {
// Write the result into the def map.
debug!("(resolving expr) resolved `{}`",
- self.path_names_to_string(path));
+ self.path_names_to_string(path, 0));
+
+ // Partial resolutions will need the set of traits in scope,
+ // so they can be completed during typeck.
+ if path_res.depth != 0 {
+ let method_name = path.segments.last().unwrap().identifier.name;
+ let traits = self.search_for_traits_containing_method(method_name);
+ self.trait_map.insert(expr.id, traits);
+ }
- self.record_def(expr.id, def);
+ self.record_def(expr.id, path_res);
}
- None => {
- // Be helpful if the name refers to a struct
- // (The pattern matching def_tys where the id is in self.structs
- // matches on regular structs while excluding tuple- and enum-like
- // structs, which wouldn't result in this error.)
- let path_name = self.path_names_to_string(path);
- match self.with_no_errors(|this|
- this.resolve_path(expr.id, path, TypeNS, false)) {
- Some((DefTy(struct_id, _), _))
- if self.structs.contains_key(&struct_id) => {
- self.resolve_error(expr.span,
- &format!("`{}` is a structure name, but \
- this expression \
- uses it like a function name",
- path_name));
-
- self.session.span_help(expr.span,
- &format!("Did you mean to write: \
- `{} {{ /* fields */ }}`?",
- path_name));
-
- }
- _ => {
- let mut method_scope = false;
- self.value_ribs.iter().rev().all(|rib| {
- let res = match *rib {
- Rib { bindings: _, kind: MethodRibKind(_, _) } => true,
- Rib { bindings: _, kind: ItemRibKind } => false,
- _ => return true, // Keep advancing
- };
-
- method_scope = res;
- false // Stop advancing
- });
+ } else {
+ // Be helpful if the name refers to a struct
+ // (The pattern matching def_tys where the id is in self.structs
+ // matches on regular structs while excluding tuple- and enum-like
+ // structs, which wouldn't result in this error.)
+ let path_name = self.path_names_to_string(path, 0);
+ let type_res = self.with_no_errors(|this| {
+ this.resolve_path(expr.id, path, 0, TypeNS, false)
+ });
+ match type_res.map(|r| r.base_def) {
+ Some(DefTy(struct_id, _))
+ if self.structs.contains_key(&struct_id) => {
+ self.resolve_error(expr.span,
+ &format!("`{}` is a structure name, but \
+ this expression \
+ uses it like a function name",
+ path_name));
+
+ self.session.span_help(expr.span,
+ &format!("Did you mean to write: \
+ `{} {{ /* fields */ }}`?",
+ path_name));
- if method_scope && &token::get_name(self.self_name)[..]
- == path_name {
- self.resolve_error(
- expr.span,
- "`self` is not available \
- in a static method. Maybe a \
- `self` argument is missing?");
- } else {
- let last_name = path.segments.last().unwrap().identifier.name;
- let mut msg = match self.find_fallback_in_self_type(last_name) {
- NoSuggestion => {
- // limit search to 5 to reduce the number
- // of stupid suggestions
- self.find_best_match_for_name(&path_name, 5)
- .map_or("".to_string(),
- |x| format!("`{}`", x))
- }
- Field =>
- format!("`self.{}`", path_name),
- Method
- | TraitItem =>
- format!("to call `self.{}`", path_name),
- TraitMethod(path_str)
- | StaticMethod(path_str) =>
- format!("to call `{}::{}`", path_str, path_name)
- };
-
- if msg.len() > 0 {
- msg = format!(". Did you mean {}?", msg)
- }
+ }
+ _ => {
+ // Keep reporting some errors even if they're ignored above.
+ self.resolve_path(expr.id, path, 0, ValueNS, true);
+
+ let mut method_scope = false;
+ self.value_ribs.iter().rev().all(|rib| {
+ method_scope = match rib.kind {
+ MethodRibKind => true,
+ ItemRibKind | ConstantItemRibKind => false,
+ _ => return true, // Keep advancing
+ };
+ false // Stop advancing
+ });
+ if method_scope && &token::get_name(self.self_name)[..]
+ == path_name {
self.resolve_error(
expr.span,
- &format!("unresolved name `{}`{}",
- path_name,
- msg));
+ "`self` is not available \
+ in a static method. Maybe a \
+ `self` argument is missing?");
+ } else {
+ let last_name = path.segments.last().unwrap().identifier.name;
+ let mut msg = match self.find_fallback_in_self_type(last_name) {
+ NoSuggestion => {
+ // limit search to 5 to reduce the number
+ // of stupid suggestions
+ self.find_best_match_for_name(&path_name, 5)
+ .map_or("".to_string(),
+ |x| format!("`{}`", x))
+ }
+ Field => format!("`self.{}`", path_name),
+ Method |
+ TraitItem =>
+ format!("to call `self.{}`", path_name),
+ TraitMethod(path_str) |
+ StaticMethod(path_str) =>
+ format!("to call `{}::{}`", path_str, path_name)
+ };
+
+ if msg.len() > 0 {
+ msg = format!(". Did you mean {}?", msg)
}
+
+ self.resolve_error(
+ expr.span,
+ &format!("unresolved name `{}`{}",
+ path_name, msg));
}
}
}
visit::walk_expr(self, expr);
}
- ExprClosure(_, ref fn_decl, ref block) => {
- self.resolve_function(ClosureRibKind(expr.id),
- Some(&**fn_decl), NoTypeParameters,
- &**block);
- }
-
ExprStruct(ref path, _, _) => {
// Resolve the path to the structure it goes to. We don't
// check to ensure that the path is actually a structure; that
// is checked later during typeck.
- match self.resolve_path(expr.id, path, TypeNS, false) {
+ match self.resolve_path(expr.id, path, 0, TypeNS, false) {
Some(definition) => self.record_def(expr.id, definition),
- result => {
- debug!("(resolving expression) didn't find struct \
- def: {:?}", result);
+ None => {
+ debug!("(resolving expression) didn't find struct def",);
let msg = format!("`{}` does not name a structure",
- self.path_names_to_string(path));
+ self.path_names_to_string(path, 0));
self.resolve_error(path.span, &msg[..]);
}
}
}
Some(DlDef(def @ DefLabel(_))) => {
// Since this def is a label, it is never read.
- self.record_def(expr.id, (def, LastMod(AllPublic)))
+ self.record_def(expr.id, PathResolution {
+ base_def: def,
+ last_private: LastMod(AllPublic),
+ depth: 0
+ })
}
Some(_) => {
self.session.span_bug(expr.span,
None => continue
};
let trait_def_id = match def {
- DefaultImpl(trait_def_id) => trait_def_id,
+ DefTrait(trait_def_id) => trait_def_id,
_ => continue,
};
if self.trait_item_map.contains_key(&(name, trait_def_id)) {
Some(target) => target,
};
let did = match target.bindings.def_for_namespace(TypeNS) {
- Some(DefaultImpl(trait_def_id)) => trait_def_id,
+ Some(DefTrait(trait_def_id)) => trait_def_id,
Some(..) | None => continue,
};
if self.trait_item_map.contains_key(&(name, did)) {
found_traits
}
- fn record_def(&mut self, node_id: NodeId, (def, lp): (Def, LastPrivate)) {
- debug!("(recording def) recording {:?} for {}, last private {:?}",
- def, node_id, lp);
- assert!(match lp {LastImport{..} => false, _ => true},
+ fn record_def(&mut self, node_id: NodeId, resolution: PathResolution) {
+ debug!("(recording def) recording {:?} for {}", resolution, node_id);
+ assert!(match resolution.last_private {LastImport{..} => false, _ => true},
"Import should only be used for `use` directives");
- self.last_private.insert(node_id, lp);
- match self.def_map.borrow_mut().entry(node_id) {
- // Resolve appears to "resolve" the same ID multiple
- // times, so here is a sanity check it at least comes to
- // the same conclusion! - nmatsakis
- Occupied(entry) => if def != *entry.get() {
- self.session
- .bug(&format!("node_id {} resolved first to {:?} and \
- then {:?}",
- node_id,
- *entry.get(),
- def));
- },
- Vacant(entry) => { entry.insert(def); },
+ if let Some(prev_res) = self.def_map.borrow_mut().insert(node_id, resolution) {
+ let span = self.ast_map.opt_span(node_id).unwrap_or(codemap::DUMMY_SP);
+ self.session.span_bug(span, &format!("path resolved multiple times \
+ ({:?} before, {:?} now)",
+ prev_res, resolution));
}
}
pub export_map: ExportMap,
pub trait_map: TraitMap,
pub external_exports: ExternalExports,
- pub last_private_map: LastPrivateMap,
pub glob_map: Option<GlobMap>
}
export_map: resolver.export_map,
trait_map: resolver.trait_map,
external_exports: resolver.external_exports,
- last_private_map: resolver.last_private,
glob_map: if resolver.make_glob_map {
Some(resolver.glob_map)
} else {
llvm::LLVMRustAddAnalysisPasses(tm, pm, llmod);
llvm::LLVMRustAddPass(pm, "verify\0".as_ptr() as *const _);
- let opt = sess.opts.cg.opt_level.unwrap_or(0) as libc::c_uint;
+ let opt = match sess.opts.optimize {
+ config::No => 0,
+ config::Less => 1,
+ config::Default => 2,
+ config::Aggressive => 3,
+ };
let builder = llvm::LLVMPassManagerBuilderCreate();
llvm::LLVMPassManagerBuilderSetOptLevel(builder, opt);
self.sess.bug(&format!("def_map has no key for {} in lookup_type_ref",
ref_id));
}
- let def = (*self.analysis.ty_cx.def_map.borrow())[ref_id];
+ let def = self.analysis.ty_cx.def_map.borrow()[ref_id].full_def();
match def {
def::DefPrimTy(_) => None,
_ => Some(def.def_id()),
self.sess.span_bug(span, &format!("def_map has no key for {} in lookup_def_kind",
ref_id));
}
- let def = (*def_map)[ref_id];
+ let def = def_map[ref_id].full_def();
match def {
def::DefMod(_) |
def::DefForeignMod(_) => Some(recorder::ModRef),
def::DefStruct(_) => Some(recorder::StructRef),
def::DefTy(..) |
def::DefAssociatedTy(..) |
- def::DefAssociatedPath(..) |
- def::DefaultImpl(_) => Some(recorder::TypeRef),
+ def::DefTrait(_) => Some(recorder::TypeRef),
def::DefStatic(_, _) |
def::DefConst(_) |
def::DefLocal(_) |
def::DefSelfTy(_) |
def::DefRegion(_) |
- def::DefTyParamBinder(_) |
def::DefLabel(_) |
- def::DefStaticMethod(..) |
def::DefTyParam(..) |
def::DefUse(_) |
def::DefMethod(..) |
let trait_id = trait_ref.as_ref().and_then(|tr| self.lookup_type_ref(tr.ref_id));
match typ.node {
// Common case impl for a struct or something basic.
- ast::TyPath(ref path, id) => {
+ ast::TyPath(None, ref path) => {
let sub_span = self.span.sub_span_for_type_name(path.span);
- let self_id = self.lookup_type_ref(id).map(|id| {
+ let self_id = self.lookup_type_ref(typ.id).map(|id| {
self.fmt.ref_str(recorder::TypeRef,
path.span,
sub_span,
self.sess.span_bug(span,
&format!("def_map has no key for {} in visit_expr", id));
}
- let def = &(*def_map)[id];
+ let def = def_map[id].full_def();
let sub_span = self.span.span_for_last_ident(span);
- match *def {
+ match def {
def::DefUpvar(..) |
def::DefLocal(..) |
def::DefStatic(..) |
sub_span,
def_id,
self.cur_scope),
- def::DefStaticMethod(declid, provenence) |
- def::DefMethod(declid, _, provenence) => {
+ def::DefMethod(declid, provenence) => {
let sub_span = self.span.sub_span_for_meth_name(span);
let defid = if declid.krate == ast::LOCAL_CRATE {
let ti = ty::impl_or_trait_item(&self.analysis.ty_cx,
&format!("Unexpected def kind while looking \
up path in `{}`: `{:?}`",
self.span.snippet(span),
- *def)),
+ def)),
}
// modules or types in the path prefix
- match *def {
- def::DefStaticMethod(..) => self.write_sub_path_trait_truncated(path),
+ match def {
+ def::DefMethod(did, _) => {
+ let ti = ty::impl_or_trait_item(&self.analysis.ty_cx, did);
+ if let ty::MethodTraitItem(m) = ti {
+ if m.explicit_self == ty::StaticExplicitSelfCategory {
+ self.write_sub_path_trait_truncated(path);
+ }
+ }
+ }
def::DefLocal(_) |
def::DefStatic(_,_) |
def::DefConst(..) |
self.collected_paths.push((p.id, path.clone(), false, recorder::StructRef));
visit::walk_path(self, path);
- let def = self.analysis.ty_cx.def_map.borrow()[p.id];
+ let def = self.analysis.ty_cx.def_map.borrow()[p.id].full_def();
let struct_def = match def {
def::DefConst(..) => None,
def::DefVariant(_, variant_id, _) => Some(variant_id),
}
match t.node {
- ast::TyPath(ref path, id) => {
- match self.lookup_type_ref(id) {
+ ast::TyPath(_, ref path) => {
+ match self.lookup_type_ref(t.id) {
Some(id) => {
let sub_span = self.span.sub_span_for_type_name(t.span);
self.fmt.ref_str(recorder::TypeRef,
// Don't need to do anything for function calls,
// because just walking the callee path does what we want.
visit::walk_expr(self, ex);
- },
- ast::ExprPath(ref path) => {
- self.process_path(ex.id, path.span, path, None);
- visit::walk_path(self, path);
}
- ast::ExprQPath(ref qpath) => {
- let mut path = qpath.trait_ref.path.clone();
- path.segments.push(qpath.item_path.clone());
- self.process_path(ex.id, ex.span, &path, None);
- visit::walk_qpath(self, ex.span, &**qpath);
+ ast::ExprPath(_, ref path) => {
+ self.process_path(ex.id, path.span, path, None);
+ visit::walk_expr(self, ex);
}
ast::ExprStruct(ref path, ref fields, ref base) =>
self.process_struct_lit(ex, path, fields, base),
&format!("def_map has no key for {} in visit_arm",
id));
}
- let def = &(*def_map)[id];
- match *def {
+ let def = def_map[id].full_def();
+ match def {
def::DefLocal(id) => {
let value = if *immut {
self.span.snippet(p.span).to_string()
def::DefStatic(_, _) => {}
def::DefConst(..) => {}
_ => error!("unexpected definition kind when processing collected paths: {:?}",
- *def)
+ def)
}
}
for &(id, ref path, ref_kind) in &paths_to_process {
let mut toks = self.retokenise_span(span);
// We keep track of how many brackets we're nested in
let mut bracket_count = 0;
+ let mut found_ufcs_sep = false;
loop {
let ts = toks.real_token();
if ts.tok == token::Eof {
}
bracket_count += match ts.tok {
token::Lt => 1,
- token::Gt => -1,
+ token::Gt => {
+ // Ignore the `>::` in `<Type as Trait>::AssocTy`.
+ if !found_ufcs_sep && bracket_count == 0 {
+ found_ufcs_sep = true;
+ 0
+ } else {
+ -1
+ }
+ }
token::BinOp(token::Shl) => 2,
token::BinOp(token::Shr) => -2,
_ => 0
};
- if ts.tok.is_ident() &&
- bracket_count == nesting {
+ if ts.tok.is_ident() && bracket_count == nesting {
result.push(self.make_sub_span(span, Some(ts.sp)).unwrap());
}
}
}
ast::PatIdent(..) | ast::PatEnum(..) | ast::PatStruct(..) => {
// This is either an enum variant or a variable binding.
- let opt_def = tcx.def_map.borrow().get(&cur.id).cloned();
+ let opt_def = tcx.def_map.borrow().get(&cur.id).map(|d| d.full_def());
match opt_def {
Some(def::DefVariant(enum_id, var_id, _)) => {
let variant = ty::enum_variant_with_id(tcx, enum_id, var_id);
match pat.node {
ast::PatTup(_) => true,
ast::PatStruct(..) => {
- match tcx.def_map.borrow().get(&pat.id) {
- Some(&def::DefVariant(..)) => false,
+ match tcx.def_map.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(def::DefVariant(..)) => false,
_ => true,
}
}
ast::PatEnum(..) | ast::PatIdent(_, _, None) => {
- match tcx.def_map.borrow().get(&pat.id) {
- Some(&def::DefStruct(..)) => true,
+ match tcx.def_map.borrow().get(&pat.id).map(|d| d.full_def()) {
+ Some(def::DefStruct(..)) => true,
_ => false
}
}
/// Checks whether the binding in `discr` is assigned to anywhere in the expression `body`
fn is_discr_reassigned(bcx: Block, discr: &ast::Expr, body: &ast::Expr) -> bool {
let (vid, field) = match discr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => match bcx.def(discr.id) {
+ ast::ExprPath(..) => match bcx.def(discr.id) {
def::DefLocal(vid) | def::DefUpvar(vid, _) => (vid, None),
_ => return false
},
ast::ExprField(ref base, field) => {
- let vid = match bcx.tcx().def_map.borrow().get(&base.id) {
- Some(&def::DefLocal(vid)) | Some(&def::DefUpvar(vid, _)) => vid,
+ let vid = match bcx.tcx().def_map.borrow().get(&base.id).map(|d| d.full_def()) {
+ Some(def::DefLocal(vid)) | Some(def::DefUpvar(vid, _)) => vid,
_ => return false
};
(vid, Some(mc::NamedField(field.node.name)))
},
ast::ExprTupField(ref base, field) => {
- let vid = match bcx.tcx().def_map.borrow().get(&base.id) {
- Some(&def::DefLocal(vid)) | Some(&def::DefUpvar(vid, _)) => vid,
+ let vid = match bcx.tcx().def_map.borrow().get(&base.id).map(|d| d.full_def()) {
+ Some(def::DefLocal(vid)) | Some(def::DefUpvar(vid, _)) => vid,
_ => return false
};
(vid, Some(mc::PositionalField(field.node)))
fn create_dummy_locals<'blk, 'tcx>(mut bcx: Block<'blk, 'tcx>,
pat: &ast::Pat)
-> Block<'blk, 'tcx> {
+ let _icx = push_ctxt("create_dummy_locals");
// create dummy memory for the variables if we have no
// value to store into them immediately
let tcx = bcx.tcx();
}
}
ast::PatEnum(_, ref sub_pats) => {
- let opt_def = bcx.tcx().def_map.borrow().get(&pat.id).cloned();
+ let opt_def = bcx.tcx().def_map.borrow().get(&pat.id).map(|d| d.full_def());
match opt_def {
Some(def::DefVariant(enum_id, var_id, _)) => {
let repr = adt::represent_node(bcx, pat.id);
// pick out special kinds of expressions that can be called:
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
return trans_def(bcx, bcx.def(expr.id), expr);
}
_ => {}
let def_id = inline::maybe_instantiate_inline(bcx.ccx(), did);
Callee { bcx: bcx, data: Intrinsic(def_id.node, substs) }
}
- def::DefFn(did, _) | def::DefMethod(did, _, def::FromImpl(_)) |
- def::DefStaticMethod(did, def::FromImpl(_)) => {
+ def::DefFn(did, _) | def::DefMethod(did, def::FromImpl(_)) => {
fn_callee(bcx, trans_fn_ref(bcx.ccx(), did, ExprId(ref_expr.id),
bcx.fcx.param_substs).val)
}
- def::DefStaticMethod(meth_did, def::FromTrait(trait_did)) |
- def::DefMethod(meth_did, _, def::FromTrait(trait_did)) => {
+ def::DefMethod(meth_did, def::FromTrait(trait_did)) => {
fn_callee(bcx, meth::trans_static_method_callee(bcx.ccx(),
meth_did,
trait_did,
def::DefUpvar(..) => {
datum_callee(bcx, ref_expr)
}
- def::DefMod(..) | def::DefForeignMod(..) | def::DefaultImpl(..) |
+ def::DefMod(..) | def::DefForeignMod(..) | def::DefTrait(..) |
def::DefTy(..) | def::DefPrimTy(..) | def::DefAssociatedTy(..) |
- def::DefUse(..) | def::DefTyParamBinder(..) |
- def::DefRegion(..) | def::DefLabel(..) | def::DefTyParam(..) |
- def::DefSelfTy(..) | def::DefAssociatedPath(..) => {
+ def::DefUse(..) | def::DefRegion(..) | def::DefLabel(..) |
+ def::DefTyParam(..) | def::DefSelfTy(..) => {
bcx.tcx().sess.span_bug(
ref_expr.span,
&format!("cannot translate def {:?} \
};
if !is_rust_fn ||
type_of::return_uses_outptr(ccx, ret_ty) ||
- common::type_needs_drop(bcx.tcx(), ret_ty) {
+ bcx.fcx.type_needs_drop(ret_ty) {
// Push the out-pointer if we use an out-pointer for this
// return type, otherwise push "undef".
if common::type_is_zero_size(ccx, ret_ty) {
cleanup_scope: ScopeId,
val: ValueRef,
ty: Ty<'tcx>) {
- if !common::type_needs_drop(self.ccx.tcx(), ty) { return; }
+ if !self.type_needs_drop(ty) { return; }
let drop = box DropValue {
is_immediate: false,
must_unwind: common::type_needs_unwind_cleanup(self.ccx, ty),
cleanup_scope: ScopeId,
val: ValueRef,
ty: Ty<'tcx>) {
- if !common::type_needs_drop(self.ccx.tcx(), ty) { return; }
+ if !self.type_needs_drop(ty) { return; }
+
let drop = box DropValue {
is_immediate: false,
must_unwind: common::type_needs_unwind_cleanup(self.ccx, ty),
val: ValueRef,
ty: Ty<'tcx>) {
- if !common::type_needs_drop(self.ccx.tcx(), ty) { return; }
+ if !self.type_needs_drop(ty) { return; }
let drop = box DropValue {
is_immediate: true,
must_unwind: common::type_needs_unwind_cleanup(self.ccx, ty),
bcx: Block<'blk, 'tcx>,
debug_loc: DebugLoc)
-> Block<'blk, 'tcx> {
+ let _icx = base::push_ctxt("<DropValue as Cleanup>::trans");
let bcx = if self.is_immediate {
glue::drop_ty_immediate(bcx, self.val, self.ty, debug_loc)
} else {
}
}
+/// If `type_needs_drop` returns true, then `ty` is definitely
+/// non-copy and *might* have a destructor attached; if it returns
+/// false, then `ty` definitely has no destructor (i.e. no drop glue).
+///
+/// (Note that this implies that if `ty` has a destructor attached,
+/// then `type_needs_drop` will definitely return `true` for `ty`.)
pub fn type_needs_drop<'tcx>(cx: &ty::ctxt<'tcx>, ty: Ty<'tcx>) -> bool {
- ty::type_contents(cx, ty).needs_drop(cx)
+ type_needs_drop_given_env(cx, ty, &ty::empty_parameter_environment(cx))
+}
+
+/// Core implementation of type_needs_drop, potentially making use of
+/// and/or updating caches held in the `param_env`.
+fn type_needs_drop_given_env<'a,'tcx>(cx: &ty::ctxt<'tcx>,
+ ty: Ty<'tcx>,
+ param_env: &ty::ParameterEnvironment<'a,'tcx>) -> bool {
+ // Issue #22536: We first query type_moves_by_default. It sees a
+ // normalized version of the type, and therefore will definitely
+ // know whether the type implements Copy (and thus needs no
+ // cleanup/drop/zeroing) ...
+ let implements_copy = !ty::type_moves_by_default(¶m_env, DUMMY_SP, ty);
+
+ if implements_copy { return false; }
+
+ // ... (issue #22536 continued) but as an optimization, still use
+ // prior logic of asking if the `needs_drop` bit is set; we need
+ // not zero non-Copy types if they have no destructor.
+
+ // FIXME(#22815): Note that calling `ty::type_contents` is a
+ // conservative heuristic; it may report that `needs_drop` is set
+ // when actual type does not actually have a destructor associated
+ // with it. But since `ty` absolutely did not have the `Copy`
+ // bound attached (see above), it is sound to treat it as having a
+ // destructor (e.g. zero its memory on move).
+
+ let contents = ty::type_contents(cx, ty);
+ debug!("type_needs_drop ty={} contents={:?}", ty.repr(cx), contents);
+ contents.needs_drop(cx)
}
fn type_is_newtype_immediate<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>, ty: Ty<'tcx>) -> bool {
self.param_substs,
value)
}
+
+ /// This is the same as `common::type_needs_drop`, except that it
+ /// may use or update caches within this `FunctionContext`.
+ pub fn type_needs_drop(&self, ty: Ty<'tcx>) -> bool {
+ type_needs_drop_given_env(self.ccx.tcx(), ty, &self.param_env)
+ }
}
// Basic block context. We create a block context for each basic block
pub fn def(&self, nid: ast::NodeId) -> def::Def {
match self.tcx().def_map.borrow().get(&nid) {
- Some(v) => v.clone(),
+ Some(v) => v.full_def(),
None => {
self.tcx().sess.bug(&format!(
"no def associated with node id {}", nid));
-> ValueRef {
// Special-case constants to cache a common global for all uses.
match expr.node {
- ast::ExprPath(_) => {
- let def = ccx.tcx().def_map.borrow()[expr.id];
+ ast::ExprPath(..) => {
+ let def = ccx.tcx().def_map.borrow()[expr.id].full_def();
match def {
def::DefConst(def_id) => {
if !ccx.tcx().adjustments.borrow().contains_key(&expr.id) {
};
unsafe {
let _icx = push_ctxt("const_expr");
- return match e.node {
+ match e.node {
ast::ExprLit(ref lit) => {
const_lit(cx, e, &**lit)
}
let (te2, _) = const_expr(cx, &**e2, param_substs);
let te2 = base::cast_shift_const_rhs(b, te1, te2);
- return match b.node {
+ match b.node {
ast::BiAdd => {
if is_float { llvm::LLVMConstFAdd(te1, te2) }
else { llvm::LLVMConstAdd(te1, te2) }
ast::ExprUnary(u, ref e) => {
let (te, ty) = const_expr(cx, &**e, param_substs);
let is_float = ty::type_is_fp(ty);
- return match u {
+ match u {
ast::UnUniq | ast::UnDeref => {
const_deref(cx, te, ty).0
}
if expr::cast_is_noop(basety, ety) {
return v;
}
- return match (expr::cast_type_kind(cx.tcx(), basety),
- expr::cast_type_kind(cx.tcx(), ety)) {
+ match (expr::cast_type_kind(cx.tcx(), basety),
+ expr::cast_type_kind(cx.tcx(), ety)) {
(expr::cast_integral, expr::cast_integral) => {
let s = ty::type_is_signed(basety) as Bool;
_ => break,
}
}
- let opt_def = cx.tcx().def_map.borrow().get(&cur.id).cloned();
+ let opt_def = cx.tcx().def_map.borrow().get(&cur.id).map(|d| d.full_def());
if let Some(def::DefStatic(def_id, _)) = opt_def {
- return get_static_val(cx, def_id, ety);
+ get_static_val(cx, def_id, ety)
+ } else {
+ // If this isn't the address of a static, then keep going through
+ // normal constant evaluation.
+ let (v, _) = const_expr(cx, &**sub, param_substs);
+ addr_of(cx, v, "ref", e.id)
}
-
- // If this isn't the address of a static, then keep going through
- // normal constant evaluation.
- let (v, _) = const_expr(cx, &**sub, param_substs);
- addr_of(cx, v, "ref", e.id)
}
ast::ExprAddrOf(ast::MutMutable, ref sub) => {
let (v, _) = const_expr(cx, &**sub, param_substs);
C_array(llunitty, &vs[..])
}
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
- let def = cx.tcx().def_map.borrow()[e.id];
+ ast::ExprPath(..) => {
+ let def = cx.tcx().def_map.borrow()[e.id].full_def();
match def {
- def::DefFn(..) | def::DefStaticMethod(..) | def::DefMethod(..) => {
+ def::DefFn(..) | def::DefMethod(..) => {
expr::trans_def_fn_unadjusted(cx, e, def, param_substs).val
}
def::DefConst(def_id) => {
}
}
ast::ExprCall(ref callee, ref args) => {
- let opt_def = cx.tcx().def_map.borrow().get(&callee.id).cloned();
+ let opt_def = cx.tcx().def_map.borrow().get(&callee.id).map(|d| d.full_def());
let arg_vals = map_list(&args[..]);
match opt_def {
Some(def::DefStruct(_)) => {
}
_ => cx.sess().span_bug(e.span,
"bad constant expression type in consts::const_expr")
- };
+ }
}
}
-> Block<'blk, 'tcx> {
let _icx = push_ctxt("trans_stmt_semi");
let ty = expr_ty(cx, e);
- if type_needs_drop(cx.tcx(), ty) {
+ if cx.fcx.type_needs_drop(ty) {
expr::trans_to_lvalue(cx, e, "stmt").bcx
} else {
expr::trans_into(cx, e, expr::Ignore)
let loop_id = match opt_label {
None => fcx.top_loop_scope(),
Some(_) => {
- match bcx.tcx().def_map.borrow().get(&expr.id) {
- Some(&def::DefLabel(loop_id)) => loop_id,
- ref r => {
- bcx.tcx().sess.bug(&format!("{:?} in def-map for label",
- r))
+ match bcx.tcx().def_map.borrow().get(&expr.id).map(|d| d.full_def()) {
+ Some(def::DefLabel(loop_id)) => loop_id,
+ r => {
+ bcx.tcx().sess.bug(&format!("{:?} in def-map for label", r))
}
}
}
val: ValueRef,
ty: Ty<'tcx>)
-> Block<'blk, 'tcx> {
- if type_needs_drop(bcx.tcx(), ty) {
+ let _icx = push_ctxt("<Lvalue as KindOps>::post_store");
+ if bcx.fcx.type_needs_drop(ty) {
// cancel cleanup of affine values by zeroing out
let () = zero_mem(bcx, val, ty);
bcx
/// scalar-ish (like an int or a pointer) which (1) does not require drop glue and (2) is
/// naturally passed around by value, and not by reference.
pub fn to_llscalarish<'blk>(self, bcx: Block<'blk, 'tcx>) -> ValueRef {
- assert!(!type_needs_drop(bcx.tcx(), self.ty));
+ assert!(!bcx.fcx.type_needs_drop(self.ty));
assert!(self.appropriate_rvalue_mode(bcx.ccx()) == ByValue);
if self.kind.is_by_ref() {
load_ty(bcx, self.val, self.ty)
ast::ExprLit(_) |
ast::ExprBreak(_) |
ast::ExprAgain(_) |
- ast::ExprPath(_) |
- ast::ExprQPath(_) => {}
+ ast::ExprPath(..) => {}
ast::ExprCast(ref sub_exp, _) |
ast::ExprAddrOf(_, ref sub_exp) |
// it prefers in-place instantiation, likely because it contains
// `[x; N]` somewhere within.
match expr.node {
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
match bcx.def(expr.id) {
def::DefConst(did) => {
let expr = consts::get_const_expr(bcx.ccx(), did, expr);
ast::ExprParen(ref e) => {
trans(bcx, &**e)
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
trans_def(bcx, expr, bcx.def(expr.id))
}
ast::ExprField(ref base, ident) => {
let _icx = push_ctxt("trans_def_lvalue");
match def {
- def::DefFn(..) | def::DefStaticMethod(..) | def::DefMethod(..) |
+ def::DefFn(..) | def::DefMethod(..) |
def::DefStruct(_) | def::DefVariant(..) => {
let datum = trans_def_fn_unadjusted(bcx.ccx(), ref_expr, def,
bcx.fcx.param_substs);
let src_datum = unpack_datum!(bcx, trans(bcx, &**src));
let dst_datum = unpack_datum!(bcx, trans_to_lvalue(bcx, &**dst, "assign"));
- if type_needs_drop(bcx.tcx(), dst_datum.ty) {
+ if bcx.fcx.type_needs_drop(dst_datum.ty) {
// If there are destructors involved, make sure we
// are copying from an rvalue, since that cannot possible
// alias an lvalue. We are concerned about code like:
ast::ExprParen(ref e) => {
trans_into(bcx, &**e, dest)
}
- ast::ExprPath(_) | ast::ExprQPath(_) => {
+ ast::ExprPath(..) => {
trans_def_dps_unadjusted(bcx, expr, bcx.def(expr.id), dest)
}
ast::ExprIf(ref cond, ref thn, ref els) => {
match def {
def::DefFn(did, _) |
def::DefStruct(did) | def::DefVariant(_, did, _) |
- def::DefStaticMethod(did, def::FromImpl(_)) |
- def::DefMethod(did, _, def::FromImpl(_)) => {
+ def::DefMethod(did, def::FromImpl(_)) => {
callee::trans_fn_ref(ccx, did, ExprId(ref_expr.id), param_substs)
}
- def::DefStaticMethod(impl_did, def::FromTrait(trait_did)) |
- def::DefMethod(impl_did, _, def::FromTrait(trait_did)) => {
+ def::DefMethod(impl_did, def::FromTrait(trait_did)) => {
meth::trans_static_method_callee(ccx, impl_did,
trait_did, ref_expr.id,
param_substs)
ty.repr(tcx)));
}
Some(node_id) => {
- let def = tcx.def_map.borrow()[node_id].clone();
+ let def = tcx.def_map.borrow()[node_id].full_def();
match def {
def::DefVariant(enum_id, variant_id, _) => {
let variant_info = ty::enum_variant_with_id(
assert_eq!(discr, 0);
match ty::expr_kind(bcx.tcx(), &*base.expr) {
- ty::RvalueDpsExpr | ty::RvalueDatumExpr if !type_needs_drop(bcx.tcx(), ty) => {
+ ty::RvalueDpsExpr | ty::RvalueDatumExpr if !bcx.fcx.type_needs_drop(ty) => {
bcx = trans_into(bcx, &*base.expr, SaveIn(addr));
},
ty::RvalueStmtExpr => bcx.tcx().sess.bug("unexpected expr kind for struct base expr"),
// Evaluate LHS (destination), which should be an lvalue
let dst_datum = unpack_datum!(bcx, trans_to_lvalue(bcx, dst, "assign_op"));
- assert!(!type_needs_drop(bcx.tcx(), dst_datum.ty));
+ assert!(!bcx.fcx.type_needs_drop(dst_datum.ty));
let dst_ty = dst_datum.ty;
let dst = load_ty(bcx, dst_datum.val, dst_datum.ty);
if !type_is_sized(tcx, t) {
return t
}
+
+ // FIXME (#22815): note that type_needs_drop conservatively
+ // approximates in some cases and may say a type expression
+ // requires drop glue when it actually does not.
+ //
+ // (In this case it is not clear whether any harm is done, i.e.
+ // erroneously returning `t` in some cases where we could have
+ // returned `tcx.types.i8` does not appear unsound. The impact on
+ // code quality is unknown at this time.)
+
if !type_needs_drop(tcx, t) {
return tcx.types.i8;
}
// NB: v is an *alias* of type t here, not a direct value.
debug!("drop_ty(t={})", t.repr(bcx.tcx()));
let _icx = push_ctxt("drop_ty");
- if type_needs_drop(bcx.tcx(), t) {
+ if bcx.fcx.type_needs_drop(t) {
let ccx = bcx.ccx();
let glue = get_drop_glue(ccx, t);
let glue_type = get_drop_glue_type(ccx, t);
},
_ => {
assert!(type_is_sized(bcx.tcx(), t));
- if type_needs_drop(bcx.tcx(), t) && ty::type_is_structural(t) {
+ if bcx.fcx.type_needs_drop(t) && ty::type_is_structural(t) {
iter_structural_ty(bcx,
v0,
t,
let ccx = fcx.ccx;
let tcx = bcx.tcx();
+ let _icx = push_ctxt("trans_intrinsic_call");
+
let ret_ty = match callee_ty.sty {
ty::ty_bare_fn(_, ref f) => {
ty::erase_late_bound_regions(bcx.tcx(), &f.sig.output())
}
(_, "needs_drop") => {
let tp_ty = *substs.types.get(FnSpace, 0);
- C_bool(ccx, type_needs_drop(ccx.tcx(), tp_ty))
+
+ C_bool(ccx, bcx.fcx.type_needs_drop(tp_ty))
}
(_, "owns_managed") => {
let tp_ty = *substs.types.get(FnSpace, 0);
let self_datum = unpack_datum!(
bcx, expr::trans(bcx, self_expr));
- let llval = if type_needs_drop(bcx.tcx(), self_datum.ty) {
+ let llval = if bcx.fcx.type_needs_drop(self_datum.ty) {
let self_datum = unpack_datum!(
bcx, self_datum.to_rvalue_datum(bcx, "trait_callee"));
let not_null = IsNotNull(bcx, vptr);
with_cond(bcx, not_null, |bcx| {
let ccx = bcx.ccx();
- let tcx = bcx.tcx();
let _icx = push_ctxt("tvec::make_drop_glue_unboxed");
let dataptr = get_dataptr(bcx, vptr);
- let bcx = if type_needs_drop(tcx, unit_ty) {
+ let bcx = if bcx.fcx.type_needs_drop(unit_ty) {
let len = get_len(bcx, vptr);
iter_vec_raw(bcx,
dataptr,
//! case but `&a` in the second. Basically, defaults that appear inside
//! an rptr (`&r.T`) use the region `r` that appears in the rptr.
-use middle::astconv_util::{ast_ty_to_prim_ty, check_path_args, NO_TPS, NO_REGIONS};
+use middle::astconv_util::{prim_ty_to_ty, check_path_args, NO_TPS, NO_REGIONS};
use middle::const_eval;
use middle::def;
use middle::resolve_lifetime as rl;
+use middle::privacy::{AllPublic, LastMod};
use middle::subst::{FnSpace, TypeSpace, SelfSpace, Subst, Substs};
use middle::traits;
use middle::ty::{self, RegionEscape, ToPolyTraitRef, Ty};
use rscope::{self, UnelidableRscope, RegionScope, ElidableRscope,
ObjectLifetimeDefaultRscope, ShiftedRscope, BindingRscope};
-use TypeAndSubsts;
use util::common::{ErrorReported, FN_OUTPUT_NAME};
use util::nodemap::DefIdMap;
use util::ppaux::{self, Repr, UserString};
-use std::rc::Rc;
use std::iter::{repeat, AdditiveIterator};
+use std::rc::Rc;
+use std::slice;
use syntax::{abi, ast, ast_util};
use syntax::codemap::Span;
use syntax::parse::token;
pub trait AstConv<'tcx> {
fn tcx<'a>(&'a self) -> &'a ty::ctxt<'tcx>;
- fn get_item_type_scheme(&self, id: ast::DefId) -> ty::TypeScheme<'tcx>;
+ fn get_item_type_scheme(&self, span: Span, id: ast::DefId)
+ -> Result<ty::TypeScheme<'tcx>, ErrorReported>;
- fn get_trait_def(&self, id: ast::DefId) -> Rc<ty::TraitDef<'tcx>>;
+ fn get_trait_def(&self, span: Span, id: ast::DefId)
+ -> Result<Rc<ty::TraitDef<'tcx>>, ErrorReported>;
+
+ fn get_type_parameter_bounds(&self, span: Span, def_id: ast::NodeId)
+ -> Result<Vec<ty::PolyTraitRef<'tcx>>, ErrorReported>;
/// Return an (optional) substitution to convert bound type parameters that
/// are in scope into free ones. This function should only return Some
pub fn ast_path_substs_for_ty<'tcx>(
this: &AstConv<'tcx>,
rscope: &RegionScope,
+ span: Span,
+ param_mode: PathParamMode,
decl_generics: &ty::Generics<'tcx>,
- path: &ast::Path)
+ item_segment: &ast::PathSegment)
-> Substs<'tcx>
{
let tcx = this.tcx();
assert!(decl_generics.regions.all(|d| d.space == TypeSpace));
assert!(decl_generics.types.all(|d| d.space != FnSpace));
- let (regions, types, assoc_bindings) = match path.segments.last().unwrap().parameters {
+ let (regions, types, assoc_bindings) = match item_segment.parameters {
ast::AngleBracketedParameters(ref data) => {
- convert_angle_bracketed_parameters(this, rscope, path.span, decl_generics, data)
+ convert_angle_bracketed_parameters(this, rscope, span, decl_generics, data)
}
ast::ParenthesizedParameters(ref data) => {
- span_err!(tcx.sess, path.span, E0214,
+ span_err!(tcx.sess, span, E0214,
"parenthesized parameters may only be used with a trait");
- convert_parenthesized_parameters(this, rscope, path.span, decl_generics, data)
+ convert_parenthesized_parameters(this, rscope, span, decl_generics, data)
}
};
prohibit_projections(this.tcx(), &assoc_bindings);
create_substs_for_ast_path(this,
- path.span,
+ span,
+ param_mode,
decl_generics,
None,
types,
regions)
}
+#[derive(PartialEq, Eq)]
+pub enum PathParamMode {
+ // Any path in a type context.
+ Explicit,
+ // The `module::Type` in `module::Type::method` in an expression.
+ Optional
+}
+
fn create_region_substs<'tcx>(
this: &AstConv<'tcx>,
rscope: &RegionScope,
fn create_substs_for_ast_path<'tcx>(
this: &AstConv<'tcx>,
span: Span,
+ param_mode: PathParamMode,
decl_generics: &ty::Generics<'tcx>,
self_ty: Option<Ty<'tcx>>,
types_provided: Vec<Ty<'tcx>>,
// Convert the type parameters supplied by the user.
let ty_param_defs = decl_generics.types.get_slice(TypeSpace);
- let supplied_ty_param_count = types_provided.len();
let formal_ty_param_count = ty_param_defs.len();
let required_ty_param_count = ty_param_defs.iter()
.take_while(|x| x.default.is_none())
.count();
- let mut type_substs = types_provided;
+ // Fill with `ty_infer` if no params were specified, as long as
+ // they were optional (e.g. paths inside expressions).
+ let mut type_substs = if param_mode == PathParamMode::Optional &&
+ types_provided.is_empty() {
+ (0..formal_ty_param_count).map(|_| this.ty_infer(span)).collect()
+ } else {
+ types_provided
+ };
+
+ let supplied_ty_param_count = type_substs.len();
check_type_argument_count(this.tcx(), span, supplied_ty_param_count,
required_ty_param_count, formal_ty_param_count);
}
}
- return substs;
+ substs
}
struct ConvertedBinding<'tcx> {
// lifetimes. Oh well, not there yet.
let shifted_rscope = ShiftedRscope::new(rscope);
- let trait_ref =
- instantiate_trait_ref(this, &shifted_rscope, &ast_trait_ref.trait_ref,
- self_ty, Some(&mut projections));
+ let trait_ref = instantiate_trait_ref(this, &shifted_rscope,
+ &ast_trait_ref.trait_ref,
+ None, self_ty, Some(&mut projections));
for projection in projections {
poly_projections.push(ty::Binder(projection));
pub fn instantiate_trait_ref<'tcx>(
this: &AstConv<'tcx>,
rscope: &RegionScope,
- ast_trait_ref: &ast::TraitRef,
+ trait_ref: &ast::TraitRef,
+ impl_id: Option<ast::NodeId>,
self_ty: Option<Ty<'tcx>>,
projections: Option<&mut Vec<ty::ProjectionPredicate<'tcx>>>)
-> Rc<ty::TraitRef<'tcx>>
{
- match ::lookup_def_tcx(this.tcx(), ast_trait_ref.path.span, ast_trait_ref.ref_id) {
- def::DefaultImpl(trait_def_id) => {
+ let path = &trait_ref.path;
+ match ::lookup_full_def(this.tcx(), path.span, trait_ref.ref_id) {
+ def::DefTrait(trait_def_id) => {
let trait_ref = ast_path_to_trait_ref(this,
rscope,
+ path.span,
+ PathParamMode::Explicit,
trait_def_id,
self_ty,
- &ast_trait_ref.path,
+ path.segments.last().unwrap(),
projections);
- this.tcx().trait_refs.borrow_mut().insert(ast_trait_ref.ref_id, trait_ref.clone());
+ if let Some(id) = impl_id {
+ this.tcx().impl_trait_refs.borrow_mut().insert(id, trait_ref.clone());
+ }
trait_ref
}
_ => {
- span_fatal!(this.tcx().sess, ast_trait_ref.path.span, E0245,
- "`{}` is not a trait",
- ast_trait_ref.path.user_string(this.tcx()));
+ span_fatal!(this.tcx().sess, path.span, E0245, "`{}` is not a trait",
+ path.user_string(this.tcx()));
}
}
}
fn object_path_to_poly_trait_ref<'a,'tcx>(
this: &AstConv<'tcx>,
rscope: &RegionScope,
+ span: Span,
+ param_mode: PathParamMode,
trait_def_id: ast::DefId,
- path: &ast::Path,
+ trait_segment: &ast::PathSegment,
mut projections: &mut Vec<ty::PolyProjectionPredicate<'tcx>>)
-> ty::PolyTraitRef<'tcx>
{
let mut tmp = Vec::new();
let trait_ref = ty::Binder(ast_path_to_trait_ref(this,
&shifted_rscope,
+ span,
+ param_mode,
trait_def_id,
None,
- path,
+ trait_segment,
Some(&mut tmp)));
projections.extend(tmp.into_iter().map(ty::Binder));
trait_ref
fn ast_path_to_trait_ref<'a,'tcx>(
this: &AstConv<'tcx>,
rscope: &RegionScope,
+ span: Span,
+ param_mode: PathParamMode,
trait_def_id: ast::DefId,
self_ty: Option<Ty<'tcx>>,
- path: &ast::Path,
+ trait_segment: &ast::PathSegment,
mut projections: Option<&mut Vec<ty::ProjectionPredicate<'tcx>>>)
-> Rc<ty::TraitRef<'tcx>>
{
- debug!("ast_path_to_trait_ref {:?}", path);
- let trait_def = this.get_trait_def(trait_def_id);
+ debug!("ast_path_to_trait_ref {:?}", trait_segment);
+ let trait_def = match this.get_trait_def(span, trait_def_id) {
+ Ok(trait_def) => trait_def,
+ Err(ErrorReported) => {
+ // No convenient way to recover from a cycle here. Just bail. Sorry!
+ this.tcx().sess.abort_if_errors();
+ this.tcx().sess.bug("ErrorReported returned, but no errors reports?")
+ }
+ };
- let (regions, types, assoc_bindings) = match path.segments.last().unwrap().parameters {
+ let (regions, types, assoc_bindings) = match trait_segment.parameters {
ast::AngleBracketedParameters(ref data) => {
// For now, require that parenthetical notation be used
// only with `Fn()` etc.
if !this.tcx().sess.features.borrow().unboxed_closures && trait_def.paren_sugar {
- span_err!(this.tcx().sess, path.span, E0215,
+ span_err!(this.tcx().sess, span, E0215,
"angle-bracket notation is not stable when \
used with the `Fn` family of traits, use parentheses");
- span_help!(this.tcx().sess, path.span,
+ span_help!(this.tcx().sess, span,
"add `#![feature(unboxed_closures)]` to \
the crate attributes to enable");
}
- convert_angle_bracketed_parameters(this, rscope, path.span, &trait_def.generics, data)
+ convert_angle_bracketed_parameters(this, rscope, span, &trait_def.generics, data)
}
ast::ParenthesizedParameters(ref data) => {
// For now, require that parenthetical notation be used
// only with `Fn()` etc.
if !this.tcx().sess.features.borrow().unboxed_closures && !trait_def.paren_sugar {
- span_err!(this.tcx().sess, path.span, E0216,
+ span_err!(this.tcx().sess, span, E0216,
"parenthetical notation is only stable when \
used with the `Fn` family of traits");
- span_help!(this.tcx().sess, path.span,
+ span_help!(this.tcx().sess, span,
"add `#![feature(unboxed_closures)]` to \
the crate attributes to enable");
}
- convert_parenthesized_parameters(this, rscope, path.span, &trait_def.generics, data)
+ convert_parenthesized_parameters(this, rscope, span, &trait_def.generics, data)
}
};
let substs = create_substs_for_ast_path(this,
- path.span,
+ span,
+ param_mode,
&trait_def.generics,
self_ty,
types,
})
}
-pub fn ast_path_to_ty<'tcx>(
+fn ast_path_to_ty<'tcx>(
this: &AstConv<'tcx>,
rscope: &RegionScope,
+ span: Span,
+ param_mode: PathParamMode,
did: ast::DefId,
- path: &ast::Path)
- -> TypeAndSubsts<'tcx>
+ item_segment: &ast::PathSegment)
+ -> Ty<'tcx>
{
let tcx = this.tcx();
- let ty::TypeScheme {
- generics,
- ty: decl_ty
- } = this.get_item_type_scheme(did);
-
- let substs = ast_path_substs_for_ty(this,
- rscope,
- &generics,
- path);
- let ty = decl_ty.subst(tcx, &substs);
- TypeAndSubsts { substs: substs, ty: ty }
-}
+ let (generics, decl_ty) = match this.get_item_type_scheme(span, did) {
+ Ok(ty::TypeScheme { generics, ty: decl_ty }) => {
+ (generics, decl_ty)
+ }
+ Err(ErrorReported) => {
+ return tcx.types.err;
+ }
+ };
-/// Converts the given AST type to a built-in type. A "built-in type" is, at
-/// present, either a core numeric type, a string, or `Box`.
-pub fn ast_ty_to_builtin_ty<'tcx>(
- this: &AstConv<'tcx>,
- rscope: &RegionScope,
- ast_ty: &ast::Ty)
- -> Option<Ty<'tcx>> {
- match ast_ty_to_prim_ty(this.tcx(), ast_ty) {
- Some(typ) => return Some(typ),
- None => {}
- }
+ let substs = ast_path_substs_for_ty(this, rscope,
+ span, param_mode,
+ &generics, item_segment);
- match ast_ty.node {
- ast::TyPath(ref path, id) => {
- let a_def = match this.tcx().def_map.borrow().get(&id) {
- None => {
- this.tcx()
- .sess
- .span_bug(ast_ty.span,
- &format!("unbound path {}",
- path.repr(this.tcx())))
- }
- Some(&d) => d
- };
-
- // FIXME(#12938): This is a hack until we have full support for
- // DST.
- match a_def {
- def::DefTy(did, _) |
- def::DefStruct(did) if Some(did) == this.tcx().lang_items.owned_box() => {
- let ty = ast_path_to_ty(this, rscope, did, path).ty;
- match ty.sty {
- ty::ty_struct(struct_def_id, ref substs) => {
- assert_eq!(struct_def_id, did);
- assert_eq!(substs.types.len(TypeSpace), 1);
- let referent_ty = *substs.types.get(TypeSpace, 0);
- Some(ty::mk_uniq(this.tcx(), referent_ty))
- }
- _ => {
- this.tcx().sess.span_bug(
- path.span,
- &format!("converting `Box` to `{}`",
- ty.repr(this.tcx())));
- }
- }
- }
- _ => None
- }
- }
- _ => None
+ // FIXME(#12938): This is a hack until we have full support for DST.
+ if Some(did) == this.tcx().lang_items.owned_box() {
+ assert_eq!(substs.types.len(TypeSpace), 1);
+ return ty::mk_uniq(this.tcx(), *substs.types.get(TypeSpace, 0));
}
+
+ decl_ty.subst(this.tcx(), &substs)
}
type TraitAndProjections<'tcx> = (ty::PolyTraitRef<'tcx>, Vec<ty::PolyProjectionPredicate<'tcx>>);
*/
match ty.node {
- ast::TyPath(ref path, id) => {
- match this.tcx().def_map.borrow().get(&id) {
- Some(&def::DefaultImpl(trait_def_id)) => {
+ ast::TyPath(None, ref path) => {
+ let def = match this.tcx().def_map.borrow().get(&ty.id) {
+ Some(&def::PathResolution { base_def, depth: 0, .. }) => Some(base_def),
+ _ => None
+ };
+ match def {
+ Some(def::DefTrait(trait_def_id)) => {
let mut projection_bounds = Vec::new();
let trait_ref = object_path_to_poly_trait_ref(this,
rscope,
+ path.span,
+ PathParamMode::Explicit,
trait_def_id,
- path,
+ path.segments.last().unwrap(),
&mut projection_bounds);
Ok((trait_ref, projection_bounds))
}
result
}
+fn report_ambiguous_associated_type(tcx: &ty::ctxt,
+ span: Span,
+ type_str: &str,
+ trait_str: &str,
+ name: &str) {
+ span_err!(tcx.sess, span, E0223,
+ "ambiguous associated type; specify the type using the syntax \
+ `<{} as {}>::{}`",
+ type_str, trait_str, name);
+}
+
fn associated_path_def_to_ty<'tcx>(this: &AstConv<'tcx>,
- ast_ty: &ast::Ty,
- provenance: def::TyParamProvenance,
- assoc_name: ast::Name)
- -> Ty<'tcx>
+ span: Span,
+ ty: Ty<'tcx>,
+ ty_path_def: def::Def,
+ item_segment: &ast::PathSegment)
+ -> (Ty<'tcx>, def::Def)
{
let tcx = this.tcx();
- let ty_param_def_id = provenance.def_id();
-
- let mut suitable_bounds: Vec<_>;
- let ty_param_name: ast::Name;
- { // contain scope of refcell:
- let ty_param_defs = tcx.ty_param_defs.borrow();
- let ty_param_def = &ty_param_defs[ty_param_def_id.node];
- ty_param_name = ty_param_def.name;
-
- // FIXME(#20300) -- search where clauses, not bounds
- suitable_bounds =
- traits::transitive_bounds(tcx, &ty_param_def.bounds.trait_bounds)
- .filter(|b| trait_defines_associated_type_named(this, b.def_id(), assoc_name))
- .collect();
- }
+ check_path_args(tcx, slice::ref_slice(item_segment), NO_TPS | NO_REGIONS);
+ let assoc_name = item_segment.identifier.name;
+
+ let is_param = match (&ty.sty, ty_path_def) {
+ (&ty::ty_param(_), def::DefTyParam(..)) |
+ (&ty::ty_param(_), def::DefSelfTy(_)) => true,
+ _ => false
+ };
+
+ let ty_param_node_id = if is_param {
+ ty_path_def.local_node_id()
+ } else {
+ report_ambiguous_associated_type(
+ tcx, span, &ty.user_string(tcx), "Trait", &token::get_name(assoc_name));
+ return (tcx.types.err, ty_path_def);
+ };
+
+ let ty_param_name = tcx.ty_param_defs.borrow()[ty_param_node_id].name;
+
+ // FIXME(#20300) -- search where clauses, not bounds
+ let bounds =
+ this.get_type_parameter_bounds(span, ty_param_node_id)
+ .unwrap_or(Vec::new());
+
+ let mut suitable_bounds: Vec<_> =
+ traits::transitive_bounds(tcx, &bounds)
+ .filter(|b| trait_defines_associated_type_named(this, b.def_id(), assoc_name))
+ .collect();
if suitable_bounds.len() == 0 {
- span_err!(tcx.sess, ast_ty.span, E0220,
+ span_err!(tcx.sess, span, E0220,
"associated type `{}` not found for type parameter `{}`",
token::get_name(assoc_name),
token::get_name(ty_param_name));
- return this.tcx().types.err;
+ return (this.tcx().types.err, ty_path_def);
}
if suitable_bounds.len() > 1 {
- span_err!(tcx.sess, ast_ty.span, E0221,
+ span_err!(tcx.sess, span, E0221,
"ambiguous associated type `{}` in bounds of `{}`",
token::get_name(assoc_name),
token::get_name(ty_param_name));
for suitable_bound in &suitable_bounds {
- span_note!(this.tcx().sess, ast_ty.span,
+ span_note!(this.tcx().sess, span,
"associated type `{}` could derive from `{}`",
token::get_name(ty_param_name),
suitable_bound.user_string(this.tcx()));
}
let suitable_bound = suitable_bounds.pop().unwrap().clone();
- return this.projected_ty_from_poly_trait_ref(ast_ty.span, suitable_bound, assoc_name);
+ let trait_did = suitable_bound.0.def_id;
+
+ let ty = this.projected_ty_from_poly_trait_ref(span, suitable_bound, assoc_name);
+
+ let item_did = if trait_did.krate == ast::LOCAL_CRATE {
+ // `ty::trait_items` used below requires information generated
+ // by type collection, which may be in progress at this point.
+ match this.tcx().map.expect_item(trait_did.node).node {
+ ast::ItemTrait(_, _, _, ref trait_items) => {
+ trait_items.iter().filter_map(|i| {
+ if let ast::TypeTraitItem(ref assoc) = *i {
+ if assoc.ty_param.ident.name == assoc_name {
+ return Some(ast_util::local_def(assoc.ty_param.id));
+ }
+ }
+ None
+ }).next().expect("missing associated type")
+ }
+ _ => unreachable!()
+ }
+ } else {
+ let trait_items = ty::trait_items(this.tcx(), trait_did);
+ let item = trait_items.iter().find(|i| i.name() == assoc_name);
+ item.expect("missing associated type").def_id()
+ };
+ (ty, def::DefAssociatedTy(trait_did, item_did))
}
fn trait_defines_associated_type_named(this: &AstConv,
fn qpath_to_ty<'tcx>(this: &AstConv<'tcx>,
rscope: &RegionScope,
- ast_ty: &ast::Ty, // the TyQPath
- qpath: &ast::QPath)
+ span: Span,
+ param_mode: PathParamMode,
+ opt_self_ty: Option<Ty<'tcx>>,
+ trait_def_id: ast::DefId,
+ trait_segment: &ast::PathSegment,
+ item_segment: &ast::PathSegment)
-> Ty<'tcx>
{
- debug!("qpath_to_ty(ast_ty={})",
- ast_ty.repr(this.tcx()));
+ let tcx = this.tcx();
- let self_type = ast_ty_to_ty(this, rscope, &*qpath.self_type);
+ check_path_args(tcx, slice::ref_slice(item_segment), NO_TPS | NO_REGIONS);
+
+ let self_ty = if let Some(ty) = opt_self_ty {
+ ty
+ } else {
+ let path_str = ty::item_path_str(tcx, trait_def_id);
+ report_ambiguous_associated_type(
+ tcx, span, "Type", &path_str, &token::get_ident(item_segment.identifier));
+ return tcx.types.err;
+ };
- debug!("qpath_to_ty: self_type={}", self_type.repr(this.tcx()));
+ debug!("qpath_to_ty: self_type={}", self_ty.repr(tcx));
- let trait_ref = instantiate_trait_ref(this,
+ let trait_ref = ast_path_to_trait_ref(this,
rscope,
- &*qpath.trait_ref,
- Some(self_type),
+ span,
+ param_mode,
+ trait_def_id,
+ Some(self_ty),
+ trait_segment,
None);
- debug!("qpath_to_ty: trait_ref={}", trait_ref.repr(this.tcx()));
+ debug!("qpath_to_ty: trait_ref={}", trait_ref.repr(tcx));
- // `<T as Trait>::U<V>` shouldn't parse right now.
- assert!(qpath.item_path.parameters.is_empty());
-
- return this.projected_ty(ast_ty.span,
- trait_ref,
- qpath.item_path.identifier.name);
+ this.projected_ty(span, trait_ref, item_segment.identifier.name)
}
/// Convert a type supplied as value for a type argument from AST into our
}
}
+pub fn finish_resolving_def_to_ty<'tcx>(this: &AstConv<'tcx>,
+ rscope: &RegionScope,
+ span: Span,
+ param_mode: PathParamMode,
+ def: &mut def::Def,
+ opt_self_ty: Option<Ty<'tcx>>,
+ segments: &[ast::PathSegment],
+ assoc_segments: &[ast::PathSegment])
+ -> Ty<'tcx> {
+ let tcx = this.tcx();
+
+ let base_ty = match *def {
+ def::DefTrait(trait_def_id) => {
+ // N.B. this case overlaps somewhat with
+ // TyObjectSum, see that fn for details
+ let mut projection_bounds = Vec::new();
+
+ let trait_ref = object_path_to_poly_trait_ref(this,
+ rscope,
+ span,
+ param_mode,
+ trait_def_id,
+ segments.last().unwrap(),
+ &mut projection_bounds);
+
+ check_path_args(tcx, segments.init(), NO_TPS | NO_REGIONS);
+ trait_ref_to_object_type(this, rscope, span, trait_ref,
+ projection_bounds, &[])
+ }
+ def::DefTy(did, _) | def::DefStruct(did) => {
+ check_path_args(tcx, segments.init(), NO_TPS | NO_REGIONS);
+ ast_path_to_ty(this, rscope, span,
+ param_mode, did,
+ segments.last().unwrap())
+ }
+ def::DefTyParam(space, index, _, name) => {
+ check_path_args(tcx, segments, NO_TPS | NO_REGIONS);
+ ty::mk_param(tcx, space, index, name)
+ }
+ def::DefSelfTy(_) => {
+ // n.b.: resolve guarantees that the this type only appears in a
+ // trait, which we rely upon in various places when creating
+ // substs
+ check_path_args(tcx, segments, NO_TPS | NO_REGIONS);
+ ty::mk_self_type(tcx)
+ }
+ def::DefAssociatedTy(trait_did, _) => {
+ check_path_args(tcx, &segments[..segments.len()-2], NO_TPS | NO_REGIONS);
+ qpath_to_ty(this, rscope, span, param_mode,
+ opt_self_ty, trait_did,
+ &segments[segments.len()-2],
+ segments.last().unwrap())
+ }
+ def::DefMod(id) => {
+ // Used as sentinel by callers to indicate the `<T>::A::B::C` form.
+ // FIXME(#22519) This part of the resolution logic should be
+ // avoided entirely for that form, once we stop needed a Def
+ // for `associated_path_def_to_ty`.
+ if segments.is_empty() {
+ opt_self_ty.expect("missing T in <T>::a::b::c")
+ } else {
+ tcx.sess.span_bug(span,
+ &format!("found module name used as a type: {}",
+ tcx.map.node_to_string(id.node)));
+ }
+ }
+ def::DefPrimTy(prim_ty) => {
+ prim_ty_to_ty(tcx, segments, prim_ty)
+ }
+ _ => {
+ span_fatal!(tcx.sess, span, E0248,
+ "found value name used as a type: {:?}", *def);
+ }
+ };
+
+ // If any associated type segments remain, attempt to resolve them.
+ let mut ty = base_ty;
+ for segment in assoc_segments {
+ if ty.sty == ty::ty_err {
+ break;
+ }
+ // This is pretty bad (it will fail except for T::A and Self::A).
+ let (a_ty, a_def) = associated_path_def_to_ty(this, span,
+ ty, *def, segment);
+ ty = a_ty;
+ *def = a_def;
+ }
+ ty
+}
+
/// Parses the programmer's textual representation of a type into our
/// internal notion of a type.
pub fn ast_ty_to_ty<'tcx>(this: &AstConv<'tcx>,
ast_ty_to_ty_cache.insert(ast_ty.id, ty::atttce_unresolved);
drop(ast_ty_to_ty_cache);
- let typ = ast_ty_to_builtin_ty(this, rscope, ast_ty).unwrap_or_else(|| {
- match ast_ty.node {
- ast::TyVec(ref ty) => {
- ty::mk_vec(tcx, ast_ty_to_ty(this, rscope, &**ty), None)
- }
- ast::TyObjectSum(ref ty, ref bounds) => {
- match ast_ty_to_trait_ref(this, rscope, &**ty, &bounds[..]) {
- Ok((trait_ref, projection_bounds)) => {
- trait_ref_to_object_type(this,
- rscope,
- ast_ty.span,
- trait_ref,
- projection_bounds,
- &bounds[..])
- }
- Err(ErrorReported) => {
- this.tcx().types.err
- }
+ let typ = match ast_ty.node {
+ ast::TyVec(ref ty) => {
+ ty::mk_vec(tcx, ast_ty_to_ty(this, rscope, &**ty), None)
+ }
+ ast::TyObjectSum(ref ty, ref bounds) => {
+ match ast_ty_to_trait_ref(this, rscope, &**ty, bounds) {
+ Ok((trait_ref, projection_bounds)) => {
+ trait_ref_to_object_type(this,
+ rscope,
+ ast_ty.span,
+ trait_ref,
+ projection_bounds,
+ bounds)
}
- }
- ast::TyPtr(ref mt) => {
- ty::mk_ptr(tcx, ty::mt {
- ty: ast_ty_to_ty(this, rscope, &*mt.ty),
- mutbl: mt.mutbl
- })
- }
- ast::TyRptr(ref region, ref mt) => {
- let r = opt_ast_region_to_region(this, rscope, ast_ty.span, region);
- debug!("ty_rptr r={}", r.repr(this.tcx()));
- let rscope1 =
- &ObjectLifetimeDefaultRscope::new(
- rscope,
- Some(ty::ObjectLifetimeDefault::Specific(r)));
- let t = ast_ty_to_ty(this, rscope1, &*mt.ty);
- ty::mk_rptr(tcx, tcx.mk_region(r), ty::mt {ty: t, mutbl: mt.mutbl})
- }
- ast::TyTup(ref fields) => {
- let flds = fields.iter()
- .map(|t| ast_ty_to_ty(this, rscope, &**t))
- .collect();
- ty::mk_tup(tcx, flds)
- }
- ast::TyParen(ref typ) => ast_ty_to_ty(this, rscope, &**typ),
- ast::TyBareFn(ref bf) => {
- if bf.decl.variadic && bf.abi != abi::C {
- span_err!(tcx.sess, ast_ty.span, E0222,
- "variadic function must have C calling convention");
+ Err(ErrorReported) => {
+ this.tcx().types.err
}
- let bare_fn = ty_of_bare_fn(this, bf.unsafety, bf.abi, &*bf.decl);
- ty::mk_bare_fn(tcx, None, tcx.mk_bare_fn(bare_fn))
}
- ast::TyPolyTraitRef(ref bounds) => {
- conv_ty_poly_trait_ref(this, rscope, ast_ty.span, &bounds[..])
+ }
+ ast::TyPtr(ref mt) => {
+ ty::mk_ptr(tcx, ty::mt {
+ ty: ast_ty_to_ty(this, rscope, &*mt.ty),
+ mutbl: mt.mutbl
+ })
+ }
+ ast::TyRptr(ref region, ref mt) => {
+ let r = opt_ast_region_to_region(this, rscope, ast_ty.span, region);
+ debug!("ty_rptr r={}", r.repr(this.tcx()));
+ let rscope1 =
+ &ObjectLifetimeDefaultRscope::new(
+ rscope,
+ Some(ty::ObjectLifetimeDefault::Specific(r)));
+ let t = ast_ty_to_ty(this, rscope1, &*mt.ty);
+ ty::mk_rptr(tcx, tcx.mk_region(r), ty::mt {ty: t, mutbl: mt.mutbl})
+ }
+ ast::TyTup(ref fields) => {
+ let flds = fields.iter()
+ .map(|t| ast_ty_to_ty(this, rscope, &**t))
+ .collect();
+ ty::mk_tup(tcx, flds)
+ }
+ ast::TyParen(ref typ) => ast_ty_to_ty(this, rscope, &**typ),
+ ast::TyBareFn(ref bf) => {
+ if bf.decl.variadic && bf.abi != abi::C {
+ span_err!(tcx.sess, ast_ty.span, E0222,
+ "variadic function must have C calling convention");
}
- ast::TyPath(ref path, id) => {
- let a_def = match tcx.def_map.borrow().get(&id) {
- None => {
- tcx.sess
- .span_bug(ast_ty.span,
- &format!("unbound path {}",
- path.repr(tcx)))
- }
- Some(&d) => d
- };
- match a_def {
- def::DefaultImpl(trait_def_id) => {
- // N.B. this case overlaps somewhat with
- // TyObjectSum, see that fn for details
- let mut projection_bounds = Vec::new();
-
- let trait_ref = object_path_to_poly_trait_ref(this,
- rscope,
- trait_def_id,
- path,
- &mut projection_bounds);
-
- trait_ref_to_object_type(this, rscope, path.span,
- trait_ref, projection_bounds, &[])
- }
- def::DefTy(did, _) | def::DefStruct(did) => {
- ast_path_to_ty(this, rscope, did, path).ty
- }
- def::DefTyParam(space, index, _, name) => {
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- ty::mk_param(tcx, space, index, name)
- }
- def::DefSelfTy(_) => {
- // n.b.: resolve guarantees that the this type only appears in a
- // trait, which we rely upon in various places when creating
- // substs
- check_path_args(tcx, path, NO_TPS | NO_REGIONS);
- ty::mk_self_type(tcx)
- }
- def::DefMod(id) => {
- span_fatal!(tcx.sess, ast_ty.span, E0247,
- "found module name used as a type: {}",
- tcx.map.node_to_string(id.node));
- }
- def::DefPrimTy(_) => {
- panic!("DefPrimTy arm missed in previous ast_ty_to_prim_ty call");
- }
- def::DefAssociatedTy(trait_type_id) => {
- let path_str = tcx.map.path_to_string(
- tcx.map.get_parent(trait_type_id.node));
- span_err!(tcx.sess, ast_ty.span, E0223,
- "ambiguous associated \
- type; specify the type \
- using the syntax `<Type \
- as {}>::{}`",
- path_str,
- &token::get_ident(
- path.segments
- .last()
- .unwrap()
- .identifier));
- this.tcx().types.err
- }
- def::DefAssociatedPath(provenance, assoc_ident) => {
- associated_path_def_to_ty(this, ast_ty, provenance, assoc_ident.name)
- }
- _ => {
- span_fatal!(tcx.sess, ast_ty.span, E0248,
- "found value name used \
- as a type: {:?}",
- a_def);
- }
+ let bare_fn = ty_of_bare_fn(this, bf.unsafety, bf.abi, &*bf.decl);
+ ty::mk_bare_fn(tcx, None, tcx.mk_bare_fn(bare_fn))
+ }
+ ast::TyPolyTraitRef(ref bounds) => {
+ conv_ty_poly_trait_ref(this, rscope, ast_ty.span, bounds)
+ }
+ ast::TyPath(ref maybe_qself, ref path) => {
+ let path_res = if let Some(&d) = tcx.def_map.borrow().get(&ast_ty.id) {
+ d
+ } else if let Some(ast::QSelf { position: 0, .. }) = *maybe_qself {
+ // Create some fake resolution that can't possibly be a type.
+ def::PathResolution {
+ base_def: def::DefMod(ast_util::local_def(ast::CRATE_NODE_ID)),
+ last_private: LastMod(AllPublic),
+ depth: path.segments.len()
}
+ } else {
+ tcx.sess.span_bug(ast_ty.span,
+ &format!("unbound path {}", ast_ty.repr(tcx)))
+ };
+ let mut def = path_res.base_def;
+ let base_ty_end = path.segments.len() - path_res.depth;
+ let opt_self_ty = maybe_qself.as_ref().map(|qself| {
+ ast_ty_to_ty(this, rscope, &qself.ty)
+ });
+ let ty = finish_resolving_def_to_ty(this, rscope, ast_ty.span,
+ PathParamMode::Explicit, &mut def,
+ opt_self_ty,
+ &path.segments[..base_ty_end],
+ &path.segments[base_ty_end..]);
+
+ if path_res.depth != 0 && ty.sty != ty::ty_err {
+ // Write back the new resolution.
+ tcx.def_map.borrow_mut().insert(ast_ty.id, def::PathResolution {
+ base_def: def,
+ last_private: path_res.last_private,
+ depth: 0
+ });
}
- ast::TyQPath(ref qpath) => {
- qpath_to_ty(this, rscope, ast_ty, &**qpath)
- }
- ast::TyFixedLengthVec(ref ty, ref e) => {
- match const_eval::eval_const_expr_partial(tcx, &**e, Some(tcx.types.uint)) {
- Ok(ref r) => {
- match *r {
- const_eval::const_int(i) =>
- ty::mk_vec(tcx, ast_ty_to_ty(this, rscope, &**ty),
- Some(i as uint)),
- const_eval::const_uint(i) =>
- ty::mk_vec(tcx, ast_ty_to_ty(this, rscope, &**ty),
- Some(i as uint)),
- _ => {
- span_fatal!(tcx.sess, ast_ty.span, E0249,
- "expected constant expr for array length");
- }
+
+ ty
+ }
+ ast::TyFixedLengthVec(ref ty, ref e) => {
+ match const_eval::eval_const_expr_partial(tcx, &**e, Some(tcx.types.uint)) {
+ Ok(r) => {
+ match r {
+ const_eval::const_int(i) =>
+ ty::mk_vec(tcx, ast_ty_to_ty(this, rscope, &**ty),
+ Some(i as uint)),
+ const_eval::const_uint(i) =>
+ ty::mk_vec(tcx, ast_ty_to_ty(this, rscope, &**ty),
+ Some(i as uint)),
+ _ => {
+ span_fatal!(tcx.sess, ast_ty.span, E0249,
+ "expected constant expr for array length");
}
}
- Err(ref r) => {
- span_fatal!(tcx.sess, ast_ty.span, E0250,
- "expected constant expr for array \
- length: {}",
- *r);
- }
}
- }
- ast::TyTypeof(ref _e) => {
- tcx.sess.span_bug(ast_ty.span, "typeof is reserved but unimplemented");
- }
- ast::TyInfer => {
- // TyInfer also appears as the type of arguments or return
- // values in a ExprClosure, or as
- // the type of local variables. Both of these cases are
- // handled specially and will not descend into this routine.
- this.ty_infer(ast_ty.span)
+ Err(r) => {
+ span_fatal!(tcx.sess, ast_ty.span, E0250,
+ "expected constant expr for array length: {}", r);
+ }
}
}
- });
+ ast::TyTypeof(ref _e) => {
+ tcx.sess.span_bug(ast_ty.span, "typeof is reserved but unimplemented");
+ }
+ ast::TyInfer => {
+ // TyInfer also appears as the type of arguments or return
+ // values in a ExprClosure, or as
+ // the type of local variables. Both of these cases are
+ // handled specially and will not descend into this routine.
+ this.ty_infer(ast_ty.span)
+ }
+ };
tcx.ast_ty_to_ty_cache.borrow_mut().insert(ast_ty.id, ty::atttce_resolved(typ));
return typ;
for ast_bound in ast_bounds {
match *ast_bound {
ast::TraitTyParamBound(ref b, ast::TraitBoundModifier::None) => {
- match ::lookup_def_tcx(tcx, b.trait_ref.path.span, b.trait_ref.ref_id) {
- def::DefaultImpl(trait_did) => {
+ match ::lookup_full_def(tcx, b.trait_ref.path.span, b.trait_ref.ref_id) {
+ def::DefTrait(trait_did) => {
match trait_def_ids.get(&trait_did) {
// Already seen this trait. We forbid
// duplicates in the list (for some
demand::eqtype(fcx, pat.span, expected, lhs_ty);
}
ast::PatEnum(..) | ast::PatIdent(..) if pat_is_const(&tcx.def_map, pat) => {
- let const_did = tcx.def_map.borrow()[pat.id].clone().def_id();
+ let const_did = tcx.def_map.borrow()[pat.id].def_id();
let const_scheme = ty::lookup_item_type(tcx, const_did);
assert!(const_scheme.generics.is_empty());
let const_ty = pcx.fcx.instantiate_type_scheme(pat.span,
let fcx = pcx.fcx;
let tcx = pcx.fcx.ccx.tcx;
- let def = tcx.def_map.borrow()[pat.id].clone();
+ let def = tcx.def_map.borrow()[pat.id].full_def();
let (enum_def_id, variant_def_id) = match def {
- def::DefaultImpl(_) => {
+ def::DefTrait(_) => {
let name = pprust::path_to_string(path);
span_err!(tcx.sess, pat.span, E0168,
"use of trait `{}` in a struct pattern", name);
};
instantiate_path(pcx.fcx,
- path,
+ &path.segments,
ty::lookup_item_type(tcx, enum_def_id),
&ty::lookup_predicates(tcx, enum_def_id),
None,
let fcx = pcx.fcx;
let tcx = pcx.fcx.ccx.tcx;
- let def = tcx.def_map.borrow()[pat.id].clone();
+ let def = tcx.def_map.borrow()[pat.id].full_def();
let enum_def = def.variant_def_ids()
.map_or_else(|| def.def_id(), |(enum_def, _)| enum_def);
} else {
ctor_scheme
};
- instantiate_path(pcx.fcx, path, path_scheme, &ctor_predicates, None, def, pat.span, pat.id);
+ instantiate_path(pcx.fcx, &path.segments,
+ path_scheme, &ctor_predicates,
+ None, def, pat.span, pat.id);
let pat_ty = fcx.node_ty(pat.id);
demand::eqtype(fcx, pat.span, expected, pat_ty);
use check::{FnCtxt};
use check::vtable;
use check::vtable::select_new_fcx_obligations;
+use middle::def;
+use middle::privacy::{AllPublic, DependsOn, LastPrivate, LastMod};
use middle::subst;
use middle::traits;
use middle::ty::*;
call_expr_id: ast::NodeId)
-> bool
{
- match probe::probe(fcx, span, method_name, self_ty, call_expr_id) {
+ let mode = probe::Mode::MethodCall;
+ match probe::probe(fcx, span, mode, method_name, self_ty, call_expr_id) {
Ok(..) => true,
Err(NoMatch(..)) => false,
Err(Ambiguity(..)) => true,
call_expr.repr(fcx.tcx()),
self_expr.repr(fcx.tcx()));
+ let mode = probe::Mode::MethodCall;
let self_ty = fcx.infcx().resolve_type_vars_if_possible(&self_ty);
- let pick = try!(probe::probe(fcx, span, method_name, self_ty, call_expr.id));
+ let pick = try!(probe::probe(fcx, span, mode, method_name, self_ty, call_expr.id));
Ok(confirm::confirm(fcx, span, self_expr, call_expr, self_ty, pick, supplied_method_types))
}
Some(callee)
}
+pub fn resolve_ufcs<'a, 'tcx>(fcx: &FnCtxt<'a, 'tcx>,
+ span: Span,
+ method_name: ast::Name,
+ self_ty: Ty<'tcx>,
+ expr_id: ast::NodeId)
+ -> Result<(def::Def, LastPrivate), MethodError>
+{
+ let mode = probe::Mode::Path;
+ let pick = try!(probe::probe(fcx, span, mode, method_name, self_ty, expr_id));
+ let def_id = pick.method_ty.def_id;
+ let mut lp = LastMod(AllPublic);
+ let provenance = match pick.kind {
+ probe::InherentImplPick(impl_def_id) => {
+ if pick.method_ty.vis != ast::Public {
+ lp = LastMod(DependsOn(def_id));
+ }
+ def::FromImpl(impl_def_id)
+ }
+ _ => def::FromTrait(pick.method_ty.container.id())
+ };
+ Ok((def::DefMethod(def_id, provenance), lp))
+}
+
/// Find method with name `method_name` defined in `trait_def_id` and return it, along with its
/// index (or `None`, if no such method).
struct ProbeContext<'a, 'tcx:'a> {
fcx: &'a FnCtxt<'a, 'tcx>,
span: Span,
+ mode: Mode,
method_name: ast::Name,
steps: Rc<Vec<CandidateStep<'tcx>>>,
opt_simplified_steps: Option<Vec<fast_reject::SimplifiedType>>,
AutoRef(ast::Mutability, Box<PickAdjustment>),
}
+#[derive(PartialEq, Eq, Copy)]
+pub enum Mode {
+ // An expression of the form `receiver.method_name(...)`.
+ // Autoderefs are performed on `receiver`, lookup is done based on the
+ // `self` argument of the method, and static methods aren't considered.
+ MethodCall,
+ // An expression of the form `Type::method` or `<T>::method`.
+ // No autoderefs are performed, lookup is done based on the type each
+ // implementation is for, and static methods are included.
+ Path
+}
+
pub fn probe<'a, 'tcx>(fcx: &FnCtxt<'a, 'tcx>,
span: Span,
+ mode: Mode,
method_name: ast::Name,
self_ty: Ty<'tcx>,
- call_expr_id: ast::NodeId)
+ scope_expr_id: ast::NodeId)
-> PickResult<'tcx>
{
- debug!("probe(self_ty={}, method_name={}, call_expr_id={})",
+ debug!("probe(self_ty={}, method_name={}, scope_expr_id={})",
self_ty.repr(fcx.tcx()),
method_name,
- call_expr_id);
+ scope_expr_id);
// FIXME(#18741) -- right now, creating the steps involves evaluating the
// `*` operator, which registers obligations that then escape into
// it ride, although it's really not great, and in fact could I
// think cause spurious errors. Really though this part should
// take place in the `fcx.infcx().probe` below.
- let steps = match create_steps(fcx, span, self_ty) {
- Some(steps) => steps,
- None => return Err(MethodError::NoMatch(Vec::new(), Vec::new())),
+ let steps = if mode == Mode::MethodCall {
+ match create_steps(fcx, span, self_ty) {
+ Some(steps) => steps,
+ None => return Err(MethodError::NoMatch(Vec::new(), Vec::new())),
+ }
+ } else {
+ vec![CandidateStep {
+ self_ty: self_ty,
+ adjustment: AutoDeref(0)
+ }]
};
// Create a list of simplified self types, if we can.
// this creates one big transaction so that all type variables etc
// that we create during the probe process are removed later
- let mut dummy = Some((steps, opt_simplified_steps)); // FIXME(#18101) need once closures
fcx.infcx().probe(|_| {
- let (steps, opt_simplified_steps) = dummy.take().unwrap();
- let mut probe_cx = ProbeContext::new(fcx, span, method_name, steps, opt_simplified_steps);
+ let mut probe_cx = ProbeContext::new(fcx,
+ span,
+ mode,
+ method_name,
+ steps,
+ opt_simplified_steps);
probe_cx.assemble_inherent_candidates();
- try!(probe_cx.assemble_extension_candidates_for_traits_in_scope(call_expr_id));
+ try!(probe_cx.assemble_extension_candidates_for_traits_in_scope(scope_expr_id));
probe_cx.pick()
})
}
impl<'a,'tcx> ProbeContext<'a,'tcx> {
fn new(fcx: &'a FnCtxt<'a,'tcx>,
span: Span,
+ mode: Mode,
method_name: ast::Name,
steps: Vec<CandidateStep<'tcx>>,
opt_simplified_steps: Option<Vec<fast_reject::SimplifiedType>>)
ProbeContext {
fcx: fcx,
span: span,
+ mode: mode,
method_name: method_name,
inherent_candidates: Vec::new(),
extension_candidates: Vec::new(),
ty::ty_closure(did, _, _) => {
self.assemble_inherent_impl_candidates_for_type(did);
}
+ ty::ty_uniq(_) => {
+ if let Some(box_did) = self.tcx().lang_items.owned_box() {
+ self.assemble_inherent_impl_candidates_for_type(box_did);
+ }
+ }
ty::ty_param(p) => {
self.assemble_inherent_candidates_from_param(self_ty, p);
}
return self.record_static_candidate(ImplSource(impl_def_id));
}
- let impl_substs = self.impl_substs(impl_def_id);
+ let (impl_ty, impl_substs) = self.impl_ty_and_substs(impl_def_id);
+ let impl_ty = self.fcx.instantiate_type_scheme(self.span, &impl_substs, &impl_ty);
// Determine the receiver type that the method itself expects.
let xform_self_ty =
- self.xform_self_ty(&method, &impl_substs);
+ self.xform_self_ty(&method, impl_ty, &impl_substs);
self.inherent_candidates.push(Candidate {
xform_self_ty: xform_self_ty,
new_trait_ref.def_id,
method_num);
- let xform_self_ty = this.xform_self_ty(&m, new_trait_ref.substs);
+ let xform_self_ty = this.xform_self_ty(&m,
+ new_trait_ref.self_ty(),
+ new_trait_ref.substs);
this.inherent_candidates.push(Candidate {
xform_self_ty: xform_self_ty,
this.erase_late_bound_regions(&poly_trait_ref);
let xform_self_ty =
- this.xform_self_ty(&m, trait_ref.substs);
+ this.xform_self_ty(&m,
+ trait_ref.self_ty(),
+ trait_ref.substs);
debug!("found match: trait_ref={} substs={} m={}",
trait_ref.repr(this.tcx()),
continue;
}
- let impl_substs = self.impl_substs(impl_def_id);
+ let (_, impl_substs) = self.impl_ty_and_substs(impl_def_id);
debug!("impl_substs={}", impl_substs.repr(self.tcx()));
// Determine the receiver type that the method itself expects.
let xform_self_ty =
- self.xform_self_ty(&method, impl_trait_ref.substs);
+ self.xform_self_ty(&method,
+ impl_trait_ref.self_ty(),
+ impl_trait_ref.substs);
debug!("xform_self_ty={}", xform_self_ty.repr(self.tcx()));
&trait_def.generics,
step.self_ty);
- let xform_self_ty = self.xform_self_ty(&method_ty, &substs);
+ let xform_self_ty = self.xform_self_ty(&method_ty,
+ step.self_ty,
+ &substs);
self.inherent_candidates.push(Candidate {
xform_self_ty: xform_self_ty,
method_ty: method_ty.clone(),
bound.repr(self.tcx()));
if self.infcx().can_equate(&step.self_ty, &bound.self_ty()).is_ok() {
- let xform_self_ty = self.xform_self_ty(&method, bound.substs);
+ let xform_self_ty = self.xform_self_ty(&method,
+ bound.self_ty(),
+ bound.substs);
debug!("assemble_projection_candidates: bound={} xform_self_ty={}",
bound.repr(self.tcx()),
.filter(|b| b.def_id() == trait_def_id)
{
let bound = self.erase_late_bound_regions(&poly_bound);
- let xform_self_ty = self.xform_self_ty(&method_ty, bound.substs);
+ let xform_self_ty = self.xform_self_ty(&method_ty,
+ bound.self_ty(),
+ bound.substs);
debug!("assemble_where_clause_candidates: bound={} xform_self_ty={}",
bound.repr(self.tcx()),
// "fast track" -- check for usage of sugar
match method.explicit_self {
ty::StaticExplicitSelfCategory => {
- // fallthrough
+ if self.mode == Mode::Path {
+ return true;
+ }
}
ty::ByValueExplicitSelfCategory |
ty::ByReferenceExplicitSelfCategory(..) |
fn xform_self_ty(&self,
method: &Rc<ty::Method<'tcx>>,
+ impl_ty: Ty<'tcx>,
substs: &subst::Substs<'tcx>)
-> Ty<'tcx>
{
- debug!("xform_self_ty(self_ty={}, substs={})",
- method.fty.sig.0.inputs[0].repr(self.tcx()),
+ debug!("xform_self_ty(impl_ty={}, self_ty={}, substs={})",
+ impl_ty.repr(self.tcx()),
+ method.fty.sig.0.inputs.get(0).repr(self.tcx()),
substs.repr(self.tcx()));
assert!(!substs.has_escaping_regions());
// if there are any.
assert_eq!(substs.types.len(subst::FnSpace), 0);
assert_eq!(substs.regions().len(subst::FnSpace), 0);
+
+ if self.mode == Mode::Path {
+ return impl_ty;
+ }
+
let placeholder;
let mut substs = substs;
if
xform_self_ty
}
- fn impl_substs(&self,
- impl_def_id: ast::DefId)
- -> subst::Substs<'tcx>
+ /// Get the type of an impl and generate substitutions with placeholders.
+ fn impl_ty_and_substs(&self,
+ impl_def_id: ast::DefId)
+ -> (Ty<'tcx>, subst::Substs<'tcx>)
{
let impl_pty = ty::lookup_item_type(self.tcx(), impl_def_id);
impl_pty.generics.regions.map(
|_| ty::ReStatic); // see erase_late_bound_regions() for an expl of why 'static
- subst::Substs::new(type_vars, region_placeholders)
+ let substs = subst::Substs::new(type_vars, region_placeholders);
+ (impl_pty.ty, substs)
}
/// Replace late-bound-regions bound by `value` with `'static` using
span: Span,
rcvr_ty: Ty<'tcx>,
method_name: ast::Name,
- callee_expr: &ast::Expr,
+ rcvr_expr: Option<&ast::Expr>,
error: MethodError)
{
// avoid suggestions when we don't know what's going on.
let cx = fcx.tcx();
let method_ustring = method_name.user_string(cx);
- // True if the type is a struct and contains a field with
- // the same name as the not-found method
- let is_field = match rcvr_ty.sty {
- ty::ty_struct(did, _) =>
- ty::lookup_struct_fields(cx, did)
- .iter()
- .any(|f| f.name.user_string(cx) == method_ustring),
- _ => false
- };
-
fcx.type_error_message(
span,
|actual| {
None);
// If the method has the name of a field, give a help note
- if is_field {
- cx.sess.span_note(span,
- &format!("use `(s.{0})(...)` if you meant to call the \
- function stored in the `{0}` field", method_ustring));
+ if let (&ty::ty_struct(did, _), Some(_)) = (&rcvr_ty.sty, rcvr_expr) {
+ let fields = ty::lookup_struct_fields(cx, did);
+ if fields.iter().any(|f| f.name == method_name) {
+ cx.sess.span_note(span,
+ &format!("use `(s.{0})(...)` if you meant to call the \
+ function stored in the `{0}` field", method_ustring));
+ }
}
if static_sources.len() > 0 {
report_candidates(fcx, span, method_name, static_sources);
}
- suggest_traits_to_import(fcx, span, rcvr_ty, method_name, out_of_scope_traits)
+ suggest_traits_to_import(fcx, span, rcvr_ty, method_name,
+ rcvr_expr, out_of_scope_traits)
}
MethodError::Ambiguity(sources) => {
}
MethodError::ClosureAmbiguity(trait_def_id) => {
- fcx.sess().span_err(
- span,
- &*format!("the `{}` method from the `{}` trait cannot be explicitly \
- invoked on this closure as we have not yet inferred what \
- kind of closure it is; use overloaded call notation instead \
- (e.g., `{}()`)",
- method_name.user_string(fcx.tcx()),
- ty::item_path_str(fcx.tcx(), trait_def_id),
- pprust::expr_to_string(callee_expr)));
+ let msg = format!("the `{}` method from the `{}` trait cannot be explicitly \
+ invoked on this closure as we have not yet inferred what \
+ kind of closure it is",
+ method_name.user_string(fcx.tcx()),
+ ty::item_path_str(fcx.tcx(), trait_def_id));
+ let msg = if let Some(callee) = rcvr_expr {
+ format!("{}; use overloaded call notation instead (e.g., `{}()`)",
+ msg, pprust::expr_to_string(callee))
+ } else {
+ msg
+ };
+ fcx.sess().span_err(span, &msg);
}
}
span: Span,
rcvr_ty: Ty<'tcx>,
method_name: ast::Name,
+ rcvr_expr: Option<&ast::Expr>,
valid_out_of_scope_traits: Vec<ast::DefId>)
{
let tcx = fcx.tcx();
return
}
- let type_is_local = type_derefs_to_local(fcx, span, rcvr_ty);
+ let type_is_local = type_derefs_to_local(fcx, span, rcvr_ty, rcvr_expr);
// there's no implemented traits, so lets suggest some traits to
// implement, by finding ones that have the method name, and are
/// autoderefs of `rcvr_ty`.
fn type_derefs_to_local<'a, 'tcx>(fcx: &FnCtxt<'a, 'tcx>,
span: Span,
- rcvr_ty: Ty<'tcx>) -> bool {
- check::autoderef(fcx, span, rcvr_ty, None,
- check::UnresolvedTypeAction::Ignore, check::NoPreference,
- |&: ty, _| {
- let is_local = match ty.sty {
+ rcvr_ty: Ty<'tcx>,
+ rcvr_expr: Option<&ast::Expr>) -> bool {
+ fn is_local(ty: Ty) -> bool {
+ match ty.sty {
ty::ty_enum(did, _) | ty::ty_struct(did, _) => ast_util::is_local(did),
ty::ty_trait(ref tr) => ast_util::is_local(tr.principal_def_id()),
ty::ty_param(_) => true,
- // the user cannot implement traits for unboxed closures, so
- // there's no point suggesting anything at all, local or not.
- ty::ty_closure(..) => return Some(false),
-
// everything else (primitive types etc.) is effectively
// non-local (there are "edge" cases, e.g. (LocalType,), but
// the noise from these sort of types is usually just really
// annoying, rather than any sort of help).
_ => false
- };
- if is_local {
- Some(true)
+ }
+ }
+
+ // This occurs for UFCS desugaring of `T::method`, where there is no
+ // receiver expression for the method call, and thus no autoderef.
+ if rcvr_expr.is_none() {
+ return is_local(fcx.resolve_type_vars_if_possible(rcvr_ty));
+ }
+
+ check::autoderef(fcx, span, rcvr_ty, None,
+ check::UnresolvedTypeAction::Ignore, check::NoPreference,
+ |ty, _| {
+ if is_local(ty) {
+ Some(())
} else {
None
}
- }).2.unwrap_or(false)
+ }).2.is_some()
}
#[derive(Copy)]
cstore: &cstore::CStore,
dl: decoder::DefLike) {
match dl {
- decoder::DlDef(def::DefaultImpl(did)) => {
+ decoder::DlDef(def::DefTrait(did)) => {
traits.push(TraitInfo::new(did));
}
decoder::DlDef(def::DefMod(did)) => {
use self::IsBinopAssignment::*;
use self::TupleArgumentsFlag::*;
-use astconv::{self, ast_region_to_region, ast_ty_to_ty, AstConv};
+use astconv::{self, ast_region_to_region, ast_ty_to_ty, AstConv, PathParamMode};
use check::_match::pat_ctxt;
use fmt_macros::{Parser, Piece, Position};
+use middle::astconv_util::{check_path_args, NO_TPS, NO_REGIONS};
use middle::{const_eval, def};
use middle::infer;
use middle::mem_categorization as mc;
use middle::mem_categorization::McResult;
use middle::pat_util::{self, pat_id_map};
+use middle::privacy::{AllPublic, LastMod};
use middle::region::{self, CodeExtent};
use middle::subst::{self, Subst, Substs, VecPerParamSpace, ParamSpace, TypeSpace};
use middle::traits;
use middle::ty::{FnSig, GenericPredicates, VariantInfo, TypeScheme};
use middle::ty::{Disr, ParamTy, ParameterEnvironment};
-use middle::ty::{self, HasProjectionTypes, RegionEscape, Ty};
+use middle::ty::{self, HasProjectionTypes, RegionEscape, ToPolyTraitRef, Ty};
use middle::ty::liberate_late_bound_regions;
use middle::ty::{MethodCall, MethodCallee, MethodMap, ObjectCastMap};
use middle::ty_fold::{TypeFolder, TypeFoldable};
use rscope::RegionScope;
use session::Session;
-use {CrateCtxt, lookup_def_ccx, require_same_types};
+use {CrateCtxt, lookup_full_def, require_same_types};
use TypeAndSubsts;
use lint;
-use util::common::{block_query, indenter, loop_query};
+use util::common::{block_query, ErrorReported, indenter, loop_query};
use util::ppaux::{self, Repr};
use util::nodemap::{DefIdMap, FnvHashMap, NodeMap};
use util::lev_distance::lev_distance;
impl<'a, 'tcx> AstConv<'tcx> for FnCtxt<'a, 'tcx> {
fn tcx(&self) -> &ty::ctxt<'tcx> { self.ccx.tcx }
- fn get_item_type_scheme(&self, id: ast::DefId) -> ty::TypeScheme<'tcx> {
- ty::lookup_item_type(self.tcx(), id)
+ fn get_item_type_scheme(&self, _: Span, id: ast::DefId)
+ -> Result<ty::TypeScheme<'tcx>, ErrorReported>
+ {
+ Ok(ty::lookup_item_type(self.tcx(), id))
}
- fn get_trait_def(&self, id: ast::DefId) -> Rc<ty::TraitDef<'tcx>> {
- ty::lookup_trait_def(self.tcx(), id)
+ fn get_trait_def(&self, _: Span, id: ast::DefId)
+ -> Result<Rc<ty::TraitDef<'tcx>>, ErrorReported>
+ {
+ Ok(ty::lookup_trait_def(self.tcx(), id))
}
fn get_free_substs(&self) -> Option<&Substs<'tcx>> {
Some(&self.inh.param_env.free_substs)
}
+ fn get_type_parameter_bounds(&self,
+ _: Span,
+ node_id: ast::NodeId)
+ -> Result<Vec<ty::PolyTraitRef<'tcx>>, ErrorReported>
+ {
+ let def = self.tcx().type_parameter_def(node_id);
+ let r = self.inh.param_env.caller_bounds
+ .iter()
+ .filter_map(|predicate| {
+ match *predicate {
+ ty::Predicate::Trait(ref data) => {
+ if data.0.self_ty().is_param(def.space, def.index) {
+ Some(data.to_poly_trait_ref())
+ } else {
+ None
+ }
+ }
+ _ => {
+ None
+ }
+ }
+ })
+ .collect();
+ Ok(r)
+ }
+
fn ty_infer(&self, _span: Span) -> Ty<'tcx> {
self.infcx().next_ty_var()
}
let ty::TypeScheme { generics, ty: decl_ty } =
ty::lookup_item_type(tcx, did);
- let wants_params =
- generics.has_type_params(TypeSpace) || generics.has_region_params(TypeSpace);
-
- let needs_defaults =
- wants_params &&
- path.segments.iter().all(|s| s.parameters.is_empty());
-
- let substs = if needs_defaults {
- let tps =
- self.infcx().next_ty_vars(generics.types.len(TypeSpace));
- let rps =
- self.infcx().region_vars_for_defs(path.span,
- generics.regions.get_slice(TypeSpace));
- Substs::new_type(tps, rps)
- } else {
- astconv::ast_path_substs_for_ty(self, self, &generics, path)
- };
+ let substs = astconv::ast_path_substs_for_ty(self, self,
+ path.span,
+ PathParamMode::Optional,
+ &generics,
+ path.segments.last().unwrap());
let ty = self.instantiate_type_scheme(path.span, &substs, &decl_ty);
}
Err(error) => {
method::report_error(fcx, method_name.span, expr_t,
- method_name.node.name, rcvr, error);
+ method_name.node.name, Some(rcvr), error);
fcx.write_error(expr.id);
fcx.tcx().types.err
}
let mut checked = false;
opt_place.as_ref().map(|place| match place.node {
- ast::ExprPath(ref path) => {
+ ast::ExprPath(None, ref path) => {
// FIXME(pcwalton): For now we hardcode the two permissible
// places: the exchange heap and the managed heap.
- let definition = lookup_def(fcx, path.span, place.id);
+ let definition = lookup_full_def(tcx, path.span, place.id);
let def_id = definition.def_id();
let referent_ty = fcx.expr_ty(&**subexpr);
if tcx.lang_items.exchange_heap() == Some(def_id) {
};
fcx.write_ty(id, oprnd_t);
}
- ast::ExprPath(ref path) => {
- let defn = lookup_def(fcx, path.span, id);
- let (scheme, predicates) = type_scheme_and_predicates_for_def(fcx, expr.span, defn);
- instantiate_path(fcx, path, scheme, &predicates, None, defn, expr.span, expr.id);
+ ast::ExprPath(ref maybe_qself, ref path) => {
+ let opt_self_ty = maybe_qself.as_ref().map(|qself| {
+ fcx.to_ty(&qself.ty)
+ });
- // We always require that the type provided as the value for
- // a type parameter outlives the moment of instantiation.
- constrain_path_type_parameters(fcx, expr);
- }
- ast::ExprQPath(ref qpath) => {
- // Require explicit type params for the trait.
- let self_ty = fcx.to_ty(&*qpath.self_type);
- astconv::instantiate_trait_ref(fcx, fcx, &*qpath.trait_ref, Some(self_ty), None);
-
- let defn = lookup_def(fcx, expr.span, id);
- let (scheme, predicates) = type_scheme_and_predicates_for_def(fcx, expr.span, defn);
- let mut path = qpath.trait_ref.path.clone();
- path.segments.push(qpath.item_path.clone());
- instantiate_path(fcx, &path, scheme, &predicates, Some(self_ty),
- defn, expr.span, expr.id);
+ let path_res = if let Some(&d) = tcx.def_map.borrow().get(&id) {
+ d
+ } else if let Some(ast::QSelf { position: 0, .. }) = *maybe_qself {
+ // Create some fake resolution that can't possibly be a type.
+ def::PathResolution {
+ base_def: def::DefMod(local_def(ast::CRATE_NODE_ID)),
+ last_private: LastMod(AllPublic),
+ depth: path.segments.len()
+ }
+ } else {
+ tcx.sess.span_bug(expr.span,
+ &format!("unbound path {}", expr.repr(tcx)))
+ };
+
+ let mut def = path_res.base_def;
+ if path_res.depth == 0 {
+ let (scheme, predicates) =
+ type_scheme_and_predicates_for_def(fcx, expr.span, def);
+ instantiate_path(fcx, &path.segments,
+ scheme, &predicates,
+ opt_self_ty, def, expr.span, id);
+ } else {
+ let ty_segments = path.segments.init();
+ let base_ty_end = path.segments.len() - path_res.depth;
+ let ty = astconv::finish_resolving_def_to_ty(fcx, fcx, expr.span,
+ PathParamMode::Optional,
+ &mut def,
+ opt_self_ty,
+ &ty_segments[..base_ty_end],
+ &ty_segments[base_ty_end..]);
+ let method_segment = path.segments.last().unwrap();
+ let method_name = method_segment.identifier.name;
+ match method::resolve_ufcs(fcx, expr.span, method_name, ty, id) {
+ Ok((def, lp)) => {
+ // Write back the new resolution.
+ tcx.def_map.borrow_mut().insert(id, def::PathResolution {
+ base_def: def,
+ last_private: path_res.last_private.or(lp),
+ depth: 0
+ });
+
+ let (scheme, predicates) =
+ type_scheme_and_predicates_for_def(fcx, expr.span, def);
+ instantiate_path(fcx, slice::ref_slice(method_segment),
+ scheme, &predicates,
+ Some(ty), def, expr.span, id);
+ }
+ Err(error) => {
+ method::report_error(fcx, expr.span, ty,
+ method_name, None, error);
+ fcx.write_error(id);
+ }
+ }
+ }
// We always require that the type provided as the value for
// a type parameter outlives the moment of instantiation.
}
ast::ExprStruct(ref path, ref fields, ref base_expr) => {
// Resolve the path.
- let def = tcx.def_map.borrow().get(&id).cloned();
+ let def = lookup_full_def(tcx, path.span, id);
let struct_id = match def {
- Some(def::DefVariant(enum_id, variant_id, true)) => {
+ def::DefVariant(enum_id, variant_id, true) => {
check_struct_enum_variant(fcx, id, expr.span, enum_id,
variant_id, &fields[..]);
enum_id
}
- Some(def::DefaultImpl(def_id)) => {
+ def::DefTrait(def_id) => {
span_err!(tcx.sess, path.span, E0159,
"use of trait `{}` as a struct constructor",
pprust::path_to_string(path));
base_expr);
def_id
},
- Some(def) => {
+ def => {
// Verify that this was actually a struct.
let typ = ty::lookup_item_type(fcx.ccx.tcx, def.def_id());
match typ.ty.sty {
def.def_id()
}
- _ => {
- tcx.sess.span_bug(path.span,
- "structure constructor wasn't resolved")
- }
};
// Turn the path into a type and verify that that type unifies with
check_instantiable(ccx.tcx, sp, id);
}
-pub fn lookup_def(fcx: &FnCtxt, sp: Span, id: ast::NodeId) -> def::Def {
- lookup_def_ccx(fcx.ccx, sp, id)
-}
-
// Returns the type parameter count and the type for the given definition.
fn type_scheme_and_predicates_for_def<'a, 'tcx>(fcx: &FnCtxt<'a, 'tcx>,
sp: Span,
(ty::TypeScheme { generics: ty::Generics::empty(), ty: typ },
ty::GenericPredicates::empty())
}
- def::DefFn(id, _) | def::DefStaticMethod(id, _) | def::DefMethod(id, _, _) |
+ def::DefFn(id, _) | def::DefMethod(id, _) |
def::DefStatic(id, _) | def::DefVariant(_, id, _) |
def::DefStruct(id) | def::DefConst(id) => {
(ty::lookup_item_type(fcx.tcx(), id), ty::lookup_predicates(fcx.tcx(), id))
}
- def::DefaultImpl(_) |
+ def::DefTrait(_) |
def::DefTy(..) |
def::DefAssociatedTy(..) |
- def::DefAssociatedPath(..) |
def::DefPrimTy(_) |
def::DefTyParam(..) |
def::DefMod(..) |
def::DefForeignMod(..) |
def::DefUse(..) |
def::DefRegion(..) |
- def::DefTyParamBinder(..) |
def::DefLabel(..) |
def::DefSelfTy(..) => {
fcx.ccx.tcx.sess.span_bug(sp, &format!("expected value, found {:?}", defn));
// Instantiates the given path, which must refer to an item with the given
// number of type parameters and type.
pub fn instantiate_path<'a, 'tcx>(fcx: &FnCtxt<'a, 'tcx>,
- path: &ast::Path,
+ segments: &[ast::PathSegment],
type_scheme: TypeScheme<'tcx>,
type_predicates: &ty::GenericPredicates<'tcx>,
opt_self_ty: Option<Ty<'tcx>>,
def: def::Def,
span: Span,
node_id: ast::NodeId) {
- debug!("instantiate_path(path={}, def={}, node_id={}, type_scheme={})",
- path.repr(fcx.tcx()),
+ debug!("instantiate_path(path={:?}, def={}, node_id={}, type_scheme={})",
+ segments,
def.repr(fcx.tcx()),
node_id,
type_scheme.repr(fcx.tcx()));
//
// The first step then is to categorize the segments appropriately.
- assert!(path.segments.len() >= 1);
+ assert!(segments.len() >= 1);
+
+ let mut ufcs_method = None;
let mut segment_spaces: Vec<_>;
match def {
// Case 1 and 1b. Reference to a *type* or *enum variant*.
def::DefSelfTy(..) |
def::DefStruct(..) |
def::DefVariant(..) |
- def::DefTyParamBinder(..) |
def::DefTy(..) |
def::DefAssociatedTy(..) |
- def::DefAssociatedPath(..) |
- def::DefaultImpl(..) |
+ def::DefTrait(..) |
def::DefPrimTy(..) |
def::DefTyParam(..) => {
// Everything but the final segment should have no
// parameters at all.
- segment_spaces = repeat(None).take(path.segments.len() - 1).collect();
+ segment_spaces = repeat(None).take(segments.len() - 1).collect();
segment_spaces.push(Some(subst::TypeSpace));
}
def::DefFn(..) |
def::DefConst(..) |
def::DefStatic(..) => {
- segment_spaces = repeat(None).take(path.segments.len() - 1).collect();
+ segment_spaces = repeat(None).take(segments.len() - 1).collect();
segment_spaces.push(Some(subst::FnSpace));
}
// Case 3. Reference to a method.
- def::DefStaticMethod(_, providence) |
- def::DefMethod(_, _, providence) => {
- assert!(path.segments.len() >= 2);
-
- match providence {
+ def::DefMethod(_, provenance) => {
+ match provenance {
def::FromTrait(trait_did) => {
callee::check_legal_trait_for_method_call(fcx.ccx, span, trait_did)
}
def::FromImpl(_) => {}
}
- segment_spaces = repeat(None).take(path.segments.len() - 2).collect();
- segment_spaces.push(Some(subst::TypeSpace));
- segment_spaces.push(Some(subst::FnSpace));
+ if segments.len() >= 2 {
+ segment_spaces = repeat(None).take(segments.len() - 2).collect();
+ segment_spaces.push(Some(subst::TypeSpace));
+ segment_spaces.push(Some(subst::FnSpace));
+ } else {
+ // `<T>::method` will end up here, and so can `T::method`.
+ let self_ty = opt_self_ty.expect("UFCS sugared method missing Self");
+ segment_spaces = vec![Some(subst::FnSpace)];
+ ufcs_method = Some((provenance, self_ty));
+ }
}
// Other cases. Various nonsense that really shouldn't show up
def::DefRegion(..) |
def::DefLabel(..) |
def::DefUpvar(..) => {
- segment_spaces = repeat(None).take(path.segments.len()).collect();
+ segment_spaces = repeat(None).take(segments.len()).collect();
}
}
- assert_eq!(segment_spaces.len(), path.segments.len());
+ assert_eq!(segment_spaces.len(), segments.len());
+
+ // In `<T as Trait<A, B>>::method`, `A` and `B` are mandatory, but
+ // `opt_self_ty` can also be Some for `Foo::method`, where Foo's
+ // type parameters are not mandatory.
+ let require_type_space = opt_self_ty.is_some() && ufcs_method.is_none();
debug!("segment_spaces={:?}", segment_spaces);
// provided (if any) into their appropriate spaces. We'll also report
// errors if type parameters are provided in an inappropriate place.
let mut substs = Substs::empty();
- for (opt_space, segment) in segment_spaces.iter().zip(path.segments.iter()) {
+ for (opt_space, segment) in segment_spaces.iter().zip(segments.iter()) {
match *opt_space {
None => {
- report_error_if_segment_contains_type_parameters(fcx, segment);
+ check_path_args(fcx.tcx(), slice::ref_slice(segment),
+ NO_TPS | NO_REGIONS);
}
Some(space) => {
push_explicit_parameters_from_segment_to_substs(fcx,
space,
- path.span,
+ span,
type_defs,
region_defs,
segment,
}
}
if let Some(self_ty) = opt_self_ty {
- // `<T as Trait>::foo` shouldn't have resolved to a `Self`-less item.
- assert_eq!(type_defs.len(subst::SelfSpace), 1);
- substs.types.push(subst::SelfSpace, self_ty);
+ if type_defs.len(subst::SelfSpace) == 1 {
+ substs.types.push(subst::SelfSpace, self_ty);
+ }
}
// Now we have to compare the types that the user *actually*
// to add defaults. If the user provided *too many* types, that's
// a problem.
for &space in &ParamSpace::all() {
- adjust_type_parameters(fcx, span, space, type_defs, &mut substs);
+ adjust_type_parameters(fcx, span, space, type_defs,
+ require_type_space, &mut substs);
assert_eq!(substs.types.len(space), type_defs.len(space));
adjust_region_parameters(fcx, span, space, region_defs, &mut substs);
// the referenced item.
let ty_substituted = fcx.instantiate_type_scheme(span, &substs, &type_scheme.ty);
- fcx.write_ty(node_id, ty_substituted);
- fcx.write_substs(node_id, ty::ItemSubsts { substs: substs });
- return;
- fn report_error_if_segment_contains_type_parameters(
- fcx: &FnCtxt,
- segment: &ast::PathSegment)
- {
- for typ in &segment.parameters.types() {
- span_err!(fcx.tcx().sess, typ.span, E0085,
- "type parameters may not appear here");
- break;
- }
+ if let Some((def::FromImpl(impl_def_id), self_ty)) = ufcs_method {
+ // In the case of `Foo<T>::method` and `<Foo<T>>::method`, if `method`
+ // is inherent, there is no `Self` parameter, instead, the impl needs
+ // type parameters, which we can infer by unifying the provided `Self`
+ // with the substituted impl type.
+ let impl_scheme = ty::lookup_item_type(fcx.tcx(), impl_def_id);
+ assert_eq!(substs.types.len(subst::TypeSpace),
+ impl_scheme.generics.types.len(subst::TypeSpace));
+ assert_eq!(substs.regions().len(subst::TypeSpace),
+ impl_scheme.generics.regions.len(subst::TypeSpace));
- for lifetime in &segment.parameters.lifetimes() {
- span_err!(fcx.tcx().sess, lifetime.span, E0086,
- "lifetime parameters may not appear here");
- break;
+ let impl_ty = fcx.instantiate_type_scheme(span, &substs, &impl_scheme.ty);
+ if fcx.mk_subty(false, infer::Misc(span), self_ty, impl_ty).is_err() {
+ fcx.tcx().sess.span_bug(span,
+ &format!(
+ "instantiate_path: (UFCS) {} was a subtype of {} but now is not?",
+ self_ty.repr(fcx.tcx()),
+ impl_ty.repr(fcx.tcx())));
}
}
+ fcx.write_ty(node_id, ty_substituted);
+ fcx.write_substs(node_id, ty::ItemSubsts { substs: substs });
+ return;
+
/// Finds the parameters that the user provided and adds them to `substs`. If too many
/// parameters are provided, then reports an error and clears the output vector.
///
span: Span,
space: ParamSpace,
defs: &VecPerParamSpace<ty::TypeParameterDef<'tcx>>,
+ require_type_space: bool,
substs: &mut Substs<'tcx>)
{
let provided_len = substs.types.len(space);
// Nothing specified at all: supply inference variables for
// everything.
- if provided_len == 0 {
- substs.types.replace(space,
- fcx.infcx().next_ty_vars(desired.len()));
+ if provided_len == 0 && !(require_type_space && space == subst::TypeSpace) {
+ substs.types.replace(space, fcx.infcx().next_ty_vars(desired.len()));
return;
}
_ => false
}
})) ||
- // Second: is there a labeled break with label
- // <id> nested anywhere inside the loop?
+ // Second: is there a labeled break with label
+ // <id> nested anywhere inside the loop?
(block_query(b, |e| {
- match e.node {
- ast::ExprBreak(Some(_)) => {
- match cx.def_map.borrow().get(&e.id) {
- Some(&def::DefLabel(loop_id)) if id == loop_id => true,
- _ => false,
- }
- }
- _ => false
- }}))
+ if let ast::ExprBreak(Some(_)) = e.node {
+ lookup_full_def(cx, e.span, e.id) == def::DefLabel(id)
+ } else {
+ false
+ }
+ }))
}
pub fn check_bounds_are_used<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
expr.span);
}
Err(..) => {
- rcx.fcx.tcx().sess.span_note(expr.span,
- "cat_expr_unadjusted Errd during dtor check");
+ let tcx = rcx.fcx.tcx();
+ if tcx.sess.has_errors() {
+ // cannot run dropck; okay b/c in error state anyway.
+ } else {
+ tcx.sess.span_bug(expr.span, "cat_expr_unadjusted Errd");
+ }
}
}
}
check_safety_of_rvalue_destructor_if_necessary(rcx, head_cmt, expr.span);
}
Err(..) => {
- rcx.fcx.tcx().sess.span_note(expr.span,
- "cat_expr Errd during dtor check");
+ let tcx = rcx.fcx.tcx();
+ if tcx.sess.has_errors() {
+ // cannot run dropck; okay b/c in error state anyway.
+ } else {
+ tcx.sess.span_bug(expr.span, "cat_expr Errd");
+ }
}
}
ast::ItemImpl(_, ast::ImplPolarity::Positive, _, _, _, _) => {
self.check_impl(item);
}
- ast::ItemImpl(_, ast::ImplPolarity::Negative, _, Some(ref tref), _, _) => {
- let trait_ref = ty::node_id_to_trait_ref(ccx.tcx, tref.ref_id);
+ ast::ItemImpl(_, ast::ImplPolarity::Negative, _, Some(_), _, _) => {
+ let trait_ref = ty::impl_id_to_trait_ref(ccx.tcx, item.id);
ty::populate_implementations_for_trait_if_necessary(ccx.tcx, trait_ref.def_id);
match ccx.tcx.lang_items.to_builtin_kind(trait_ref.def_id) {
Some(ty::BoundSend) | Some(ty::BoundSync) => {}
impl<'cx, 'tcx,'v> visit::Visitor<'v> for ImplsChecker<'cx, 'tcx> {
fn visit_item(&mut self, item: &'v ast::Item) {
match item.node {
- ast::ItemImpl(_, _, _, Some(ref opt_trait), _, _) => {
- let trait_ref = ty::node_id_to_trait_ref(self.tcx, opt_trait.ref_id);
+ ast::ItemImpl(_, _, _, Some(_), _, _) => {
+ let trait_ref = ty::impl_id_to_trait_ref(self.tcx, item.id);
if let Some(_) = self.tcx.lang_items.to_builtin_kind(trait_ref.def_id) {
match trait_ref.self_ty().sty {
ty::ty_struct(..) | ty::ty_enum(..) => {}
//debug!("(checking coherence) item '{}'", token::get_ident(item.ident));
- match item.node {
- ItemImpl(_, _, _, ref opt_trait, _, _) => {
- match opt_trait.clone() {
- Some(opt_trait) => {
- self.cc.check_implementation(item, &[opt_trait]);
- }
- None => self.cc.check_implementation(item, &[])
- }
- }
- _ => {
- // Nothing to do.
- }
- };
+ if let ItemImpl(_, _, _, ref opt_trait, _, _) = item.node {
+ self.cc.check_implementation(item, opt_trait.as_ref())
+ }
visit::walk_item(self, item);
}
self.check_implementations_of_copy();
}
- fn check_implementation(&self,
- item: &Item,
- associated_traits: &[TraitRef]) {
+ fn check_implementation(&self, item: &Item, opt_trait: Option<&TraitRef>) {
let tcx = self.crate_context.tcx;
let impl_did = local_def(item.id);
let self_type = ty::lookup_item_type(tcx, impl_did);
let impl_items = self.create_impl_from_item(item);
- for associated_trait in associated_traits {
- let trait_ref = ty::node_id_to_trait_ref(self.crate_context.tcx,
- associated_trait.ref_id);
+ if opt_trait.is_some() {
+ let trait_ref = ty::impl_id_to_trait_ref(self.crate_context.tcx, item.id);
debug!("(checking implementation) adding impl for trait '{}', item '{}'",
trait_ref.repr(self.crate_context.tcx),
token::get_ident(item.ident));
}
Some(base_type_def_id) => {
// FIXME: Gather up default methods?
- if associated_traits.len() == 0 {
+ if opt_trait.is_none() {
self.add_inherent_impl(base_type_def_id, impl_did);
}
}
// Converts an implementation in the AST to a vector of items.
fn create_impl_from_item(&self, item: &Item) -> Vec<ImplOrTraitItemId> {
match item.node {
- ItemImpl(_, _, _, ref trait_refs, _, ref ast_items) => {
+ ItemImpl(_, _, _, ref opt_trait, _, ref ast_items) => {
let mut items: Vec<ImplOrTraitItemId> =
ast_items.iter()
.map(|ast_item| {
}
}).collect();
- if let Some(ref trait_ref) = *trait_refs {
- let ty_trait_ref = ty::node_id_to_trait_ref(
- self.crate_context.tcx,
- trait_ref.ref_id);
+ if opt_trait.is_some() {
+ let trait_ref = ty::impl_id_to_trait_ref(self.crate_context.tcx,
+ item.id);
self.instantiate_default_methods(local_def(item.id),
- &*ty_trait_ref,
+ &*trait_ref,
&mut items);
}
use syntax::ast::{Item, ItemImpl};
use syntax::ast;
use syntax::ast_util;
-use syntax::codemap::Span;
use syntax::visit;
use util::ppaux::{Repr, UserString};
}
impl<'cx, 'tcx> OrphanChecker<'cx, 'tcx> {
- fn check_def_id(&self, span: Span, def_id: ast::DefId) {
+ fn check_def_id(&self, item: &ast::Item, def_id: ast::DefId) {
if def_id.krate != ast::LOCAL_CRATE {
- span_err!(self.tcx.sess, span, E0116,
+ span_err!(self.tcx.sess, item.span, E0116,
"cannot associate methods with a type outside the \
crate the type is defined in; define and implement \
a trait or new type instead");
}
impl<'cx, 'tcx,'v> visit::Visitor<'v> for OrphanChecker<'cx, 'tcx> {
- fn visit_item(&mut self, item: &'v ast::Item) {
+ fn visit_item(&mut self, item: &ast::Item) {
let def_id = ast_util::local_def(item.id);
match item.node {
ast::ItemImpl(_, _, _, None, _, _) => {
match self_ty.sty {
ty::ty_enum(def_id, _) |
ty::ty_struct(def_id, _) => {
- self.check_def_id(item.span, def_id);
+ self.check_def_id(item, def_id);
}
ty::ty_trait(ref data) => {
- self.check_def_id(item.span, data.principal_def_id());
+ self.check_def_id(item, data.principal_def_id());
}
ty::ty_uniq(..) => {
- self.check_def_id(item.span,
- self.tcx.lang_items.owned_box()
- .unwrap());
+ self.check_def_id(item, self.tcx.lang_items.owned_box().unwrap());
}
_ => {
span_err!(self.tcx.sess, item.span, E0118,
}
}
}
- ast::ItemDefaultImpl(_, ref ast_trait_ref) => {
+ ast::ItemDefaultImpl(..) => {
// "Trait" impl
debug!("coherence2::orphan check: default trait impl {}", item.repr(self.tcx));
- let trait_ref = ty::node_id_to_trait_ref(self.tcx, ast_trait_ref.ref_id);
+ let trait_ref = ty::impl_trait_ref(self.tcx, def_id).unwrap();
if trait_ref.def_id.krate != ast::LOCAL_CRATE {
span_err!(self.tcx.sess, item.span, E0318,
"cannot create default implementations for traits outside the \
None => {
self.tcx.sess.bug(
&format!("no default implementation recorded for `{:?}`",
- item)[]);
+ item));
}
}
}
use middle::lang_items::SizedTraitLangItem;
use middle::region;
use middle::resolve_lifetime;
-use middle::subst;
-use middle::subst::{Substs, SelfSpace, TypeSpace, VecPerParamSpace};
+use middle::subst::{Substs, FnSpace, ParamSpace, SelfSpace, TypeSpace, VecPerParamSpace};
use middle::ty::{AsPredicate, ImplContainer, ImplOrTraitItemContainer, TraitContainer};
-use middle::ty::{self, RegionEscape, Ty, TypeScheme};
+use middle::ty::{self, RegionEscape, ToPolyTraitRef, Ty, TypeScheme};
use middle::ty_fold::{self, TypeFolder, TypeFoldable};
use middle::infer;
use rscope::*;
-use util::common::memoized;
+use util::common::{ErrorReported, memoized};
use util::nodemap::{FnvHashMap, FnvHashSet};
use util::ppaux;
use util::ppaux::{Repr,UserString};
use write_ty_to_tcx;
+use std::cell::RefCell;
use std::collections::HashSet;
use std::rc::Rc;
// Main entry point
pub fn collect_item_types(tcx: &ty::ctxt) {
- let ccx = &CollectCtxt { tcx: tcx };
+ let ccx = &CrateCtxt { tcx: tcx, stack: RefCell::new(Vec::new()) };
match ccx.tcx.lang_items.ty_desc() {
Some(id) => { collect_intrinsic_type(ccx, id); }
///////////////////////////////////////////////////////////////////////////
-struct CollectCtxt<'a,'tcx:'a> {
+struct CrateCtxt<'a,'tcx:'a> {
tcx: &'a ty::ctxt<'tcx>,
+
+ // This stack is used to identify cycles in the user's source.
+ // Note that these cycles can cross multiple items.
+ stack: RefCell<Vec<AstConvRequest>>,
+}
+
+/// Context specific to some particular item. This is what implements
+/// AstConv. It has information about the predicates that are defined
+/// on the trait. Unfortunately, this predicate information is
+/// available in various different forms at various points in the
+/// process. So we can't just store a pointer to e.g. the AST or the
+/// parsed ty form, we have to be more flexible. To this end, the
+/// `ItemCtxt` is parameterized by a `GetTypeParameterBounds` object
+/// that it uses to satisfy `get_type_parameter_bounds` requests.
+/// This object might draw the information from the AST
+/// (`ast::Generics`) or it might draw from a `ty::GenericPredicates`
+/// or both (a tuple).
+struct ItemCtxt<'a,'tcx:'a> {
+ ccx: &'a CrateCtxt<'a,'tcx>,
+ param_bounds: &'a (GetTypeParameterBounds<'tcx>+'a),
+}
+
+#[derive(Copy, PartialEq, Eq)]
+enum AstConvRequest {
+ GetItemTypeScheme(ast::DefId),
+ GetTraitDef(ast::DefId),
+ GetTypeParameterBounds(ast::NodeId),
}
///////////////////////////////////////////////////////////////////////////
// Zeroth phase: collect types of intrinsics
-fn collect_intrinsic_type(ccx: &CollectCtxt,
+fn collect_intrinsic_type(ccx: &CrateCtxt,
lang_item: ast::DefId) {
- let ty::TypeScheme { ty, .. } =
- ccx.get_item_type_scheme(lang_item);
+ let ty::TypeScheme { ty, .. } = type_scheme_of_def_id(ccx, lang_item);
ccx.tcx.intrinsic_defs.borrow_mut().insert(lang_item, ty);
}
// know later when parsing field defs.
struct CollectTraitDefVisitor<'a, 'tcx: 'a> {
- ccx: &'a CollectCtxt<'a, 'tcx>
+ ccx: &'a CrateCtxt<'a, 'tcx>
}
impl<'a, 'tcx, 'v> visit::Visitor<'v> for CollectTraitDefVisitor<'a, 'tcx> {
// Second phase: collection proper.
struct CollectItemTypesVisitor<'a, 'tcx: 'a> {
- ccx: &'a CollectCtxt<'a, 'tcx>
+ ccx: &'a CrateCtxt<'a, 'tcx>
}
impl<'a, 'tcx, 'v> visit::Visitor<'v> for CollectItemTypesVisitor<'a, 'tcx> {
///////////////////////////////////////////////////////////////////////////
// Utility types and common code for the above passes.
-pub trait ToTy<'tcx> {
- fn to_ty<RS:RegionScope>(&self, rs: &RS, ast_ty: &ast::Ty) -> Ty<'tcx>;
-}
+impl<'a,'tcx> CrateCtxt<'a,'tcx> {
+ fn icx(&'a self, param_bounds: &'a GetTypeParameterBounds<'tcx>) -> ItemCtxt<'a,'tcx> {
+ ItemCtxt { ccx: self, param_bounds: param_bounds }
+ }
-impl<'a,'tcx> ToTy<'tcx> for CollectCtxt<'a,'tcx> {
- fn to_ty<RS:RegionScope>(&self, rs: &RS, ast_ty: &ast::Ty) -> Ty<'tcx> {
- ast_ty_to_ty(self, rs, ast_ty)
+ fn method_ty(&self, method_id: ast::NodeId) -> Rc<ty::Method<'tcx>> {
+ let def_id = local_def(method_id);
+ match self.tcx.impl_or_trait_items.borrow()[def_id] {
+ ty::MethodTraitItem(ref mty) => mty.clone(),
+ ty::TypeTraitItem(..) => {
+ self.tcx.sess.bug(&format!("method with id {} has the wrong type", method_id));
+ }
+ }
}
-}
-impl<'a, 'tcx> AstConv<'tcx> for CollectCtxt<'a, 'tcx> {
- fn tcx(&self) -> &ty::ctxt<'tcx> { self.tcx }
+ fn cycle_check<F,R>(&self,
+ span: Span,
+ request: AstConvRequest,
+ code: F)
+ -> Result<R,ErrorReported>
+ where F: FnOnce() -> R
+ {
+ {
+ let mut stack = self.stack.borrow_mut();
+ match stack.iter().enumerate().rev().find(|&(_, r)| *r == request) {
+ None => { }
+ Some((i, _)) => {
+ let cycle = &stack[i..];
+ self.report_cycle(span, cycle);
+ return Err(ErrorReported);
+ }
+ }
+ stack.push(request);
+ }
+
+ let result = code();
- fn get_item_type_scheme(&self, id: ast::DefId) -> ty::TypeScheme<'tcx> {
- if id.krate != ast::LOCAL_CRATE {
- return ty::lookup_item_type(self.tcx, id);
+ self.stack.borrow_mut().pop();
+ Ok(result)
+ }
+
+ fn report_cycle(&self,
+ span: Span,
+ cycle: &[AstConvRequest])
+ {
+ assert!(!cycle.is_empty());
+ let tcx = self.tcx;
+
+ tcx.sess.span_err(
+ span,
+ &format!("unsupported cyclic reference between types/traits detected"));
+
+ match cycle[0] {
+ AstConvRequest::GetItemTypeScheme(def_id) |
+ AstConvRequest::GetTraitDef(def_id) => {
+ tcx.sess.note(
+ &format!("the cycle begins when processing `{}`...",
+ ty::item_path_str(tcx, def_id)));
+ }
+ AstConvRequest::GetTypeParameterBounds(id) => {
+ let def = tcx.type_parameter_def(id);
+ tcx.sess.note(
+ &format!("the cycle begins when computing the bounds \
+ for type parameter `{}`...",
+ def.name.user_string(tcx)));
+ }
}
- match self.tcx.map.find(id.node) {
- Some(ast_map::NodeItem(item)) => {
- type_scheme_of_item(self, &*item)
+ for request in cycle[1..].iter() {
+ match *request {
+ AstConvRequest::GetItemTypeScheme(def_id) |
+ AstConvRequest::GetTraitDef(def_id) => {
+ tcx.sess.note(
+ &format!("...which then requires processing `{}`...",
+ ty::item_path_str(tcx, def_id)));
+ }
+ AstConvRequest::GetTypeParameterBounds(id) => {
+ let def = tcx.type_parameter_def(id);
+ tcx.sess.note(
+ &format!("...which then requires computing the bounds \
+ for type parameter `{}`...",
+ def.name.user_string(tcx)));
+ }
}
- Some(ast_map::NodeForeignItem(foreign_item)) => {
- let abi = self.tcx.map.get_foreign_abi(id.node);
- type_scheme_of_foreign_item(self, &*foreign_item, abi)
+ }
+
+ match cycle[0] {
+ AstConvRequest::GetItemTypeScheme(def_id) |
+ AstConvRequest::GetTraitDef(def_id) => {
+ tcx.sess.note(
+ &format!("...which then again requires processing `{}`, completing the cycle.",
+ ty::item_path_str(tcx, def_id)));
}
- x => {
- self.tcx.sess.bug(&format!("unexpected sort of node \
- in get_item_type_scheme(): {:?}",
- x));
+ AstConvRequest::GetTypeParameterBounds(id) => {
+ let def = tcx.type_parameter_def(id);
+ tcx.sess.note(
+ &format!("...which then again requires computing the bounds \
+ for type parameter `{}`, completing the cycle.",
+ def.name.user_string(tcx)));
}
}
}
+}
- fn get_trait_def(&self, id: ast::DefId) -> Rc<ty::TraitDef<'tcx>> {
- get_trait_def(self, id)
+impl<'a,'tcx> ItemCtxt<'a,'tcx> {
+ fn to_ty<RS:RegionScope>(&self, rs: &RS, ast_ty: &ast::Ty) -> Ty<'tcx> {
+ ast_ty_to_ty(self, rs, ast_ty)
+ }
+}
+
+impl<'a, 'tcx> AstConv<'tcx> for ItemCtxt<'a, 'tcx> {
+ fn tcx(&self) -> &ty::ctxt<'tcx> { self.ccx.tcx }
+
+ fn get_item_type_scheme(&self, span: Span, id: ast::DefId)
+ -> Result<ty::TypeScheme<'tcx>, ErrorReported>
+ {
+ self.ccx.cycle_check(span, AstConvRequest::GetItemTypeScheme(id), || {
+ type_scheme_of_def_id(self.ccx, id)
+ })
+ }
+
+ fn get_trait_def(&self, span: Span, id: ast::DefId)
+ -> Result<Rc<ty::TraitDef<'tcx>>, ErrorReported>
+ {
+ self.ccx.cycle_check(span, AstConvRequest::GetTraitDef(id), || {
+ get_trait_def(self.ccx, id)
+ })
+ }
+
+ fn get_type_parameter_bounds(&self,
+ span: Span,
+ node_id: ast::NodeId)
+ -> Result<Vec<ty::PolyTraitRef<'tcx>>, ErrorReported>
+ {
+ self.ccx.cycle_check(span, AstConvRequest::GetTypeParameterBounds(node_id), || {
+ self.param_bounds.get_type_parameter_bounds(self, span, node_id)
+ })
}
fn ty_infer(&self, span: Span) -> Ty<'tcx> {
}
}
-fn get_enum_variant_types<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+/// Interface used to find the bounds on a type parameter from within
+/// an `ItemCtxt`. This allows us to use multiple kinds of sources.
+trait GetTypeParameterBounds<'tcx> {
+ fn get_type_parameter_bounds(&self,
+ astconv: &AstConv<'tcx>,
+ span: Span,
+ node_id: ast::NodeId)
+ -> Vec<ty::PolyTraitRef<'tcx>>;
+}
+
+/// Find bounds from both elements of the tuple.
+impl<'a,'b,'tcx,A,B> GetTypeParameterBounds<'tcx> for (&'a A,&'b B)
+ where A : GetTypeParameterBounds<'tcx>, B : GetTypeParameterBounds<'tcx>
+{
+ fn get_type_parameter_bounds(&self,
+ astconv: &AstConv<'tcx>,
+ span: Span,
+ node_id: ast::NodeId)
+ -> Vec<ty::PolyTraitRef<'tcx>>
+ {
+ let mut v = self.0.get_type_parameter_bounds(astconv, span, node_id);
+ v.extend(self.1.get_type_parameter_bounds(astconv, span, node_id).into_iter());
+ v
+ }
+}
+
+/// Empty set of bounds.
+impl<'tcx> GetTypeParameterBounds<'tcx> for () {
+ fn get_type_parameter_bounds(&self,
+ _astconv: &AstConv<'tcx>,
+ _span: Span,
+ _node_id: ast::NodeId)
+ -> Vec<ty::PolyTraitRef<'tcx>>
+ {
+ Vec::new()
+ }
+}
+
+/// Find bounds from the parsed and converted predicates. This is
+/// used when converting methods, because by that time the predicates
+/// from the trait/impl have been fully converted.
+impl<'tcx> GetTypeParameterBounds<'tcx> for ty::GenericPredicates<'tcx> {
+ fn get_type_parameter_bounds(&self,
+ astconv: &AstConv<'tcx>,
+ _span: Span,
+ node_id: ast::NodeId)
+ -> Vec<ty::PolyTraitRef<'tcx>>
+ {
+ let def = astconv.tcx().type_parameter_def(node_id);
+
+ self.predicates
+ .iter()
+ .filter_map(|predicate| {
+ match *predicate {
+ ty::Predicate::Trait(ref data) => {
+ if data.0.self_ty().is_param(def.space, def.index) {
+ Some(data.to_poly_trait_ref())
+ } else {
+ None
+ }
+ }
+ ty::Predicate::Equate(..) |
+ ty::Predicate::RegionOutlives(..) |
+ ty::Predicate::TypeOutlives(..) |
+ ty::Predicate::Projection(..) => {
+ None
+ }
+ }
+ })
+ .collect()
+ }
+}
+
+/// Find bounds from ast::Generics. This requires scanning through the
+/// AST. We do this to avoid having to convert *all* the bounds, which
+/// would create artificial cycles. Instead we can only convert the
+/// bounds for those a type parameter `X` if `X::Foo` is used.
+impl<'tcx> GetTypeParameterBounds<'tcx> for ast::Generics {
+ fn get_type_parameter_bounds(&self,
+ astconv: &AstConv<'tcx>,
+ _: Span,
+ node_id: ast::NodeId)
+ -> Vec<ty::PolyTraitRef<'tcx>>
+ {
+ // In the AST, bounds can derive from two places. Either
+ // written inline like `<T:Foo>` or in a where clause like
+ // `where T:Foo`.
+
+ let def = astconv.tcx().type_parameter_def(node_id);
+ let ty = ty::mk_param_from_def(astconv.tcx(), &def);
+
+ let from_ty_params =
+ self.ty_params
+ .iter()
+ .filter(|p| p.id == node_id)
+ .flat_map(|p| p.bounds.iter())
+ .filter_map(|b| poly_trait_ref_from_bound(astconv, ty, b, &mut Vec::new()));
+
+ let from_where_clauses =
+ self.where_clause
+ .predicates
+ .iter()
+ .filter_map(|wp| match *wp {
+ ast::WherePredicate::BoundPredicate(ref bp) => Some(bp),
+ _ => None
+ })
+ .filter(|bp| is_param(astconv.tcx(), &bp.bounded_ty, node_id))
+ .flat_map(|bp| bp.bounds.iter())
+ .filter_map(|b| poly_trait_ref_from_bound(astconv, ty, b, &mut Vec::new()));
+
+ from_ty_params.chain(from_where_clauses).collect()
+ }
+}
+
+/// Tests whether this is the AST for a reference to the type
+/// parameter with id `param_id`. We use this so as to avoid running
+/// `ast_ty_to_ty`, because we want to avoid triggering an all-out
+/// conversion of the type to avoid inducing unnecessary cycles.
+fn is_param<'tcx>(tcx: &ty::ctxt<'tcx>,
+ ast_ty: &ast::Ty,
+ param_id: ast::NodeId)
+ -> bool
+{
+ if let ast::TyPath(None, _) = ast_ty.node {
+ let path_res = tcx.def_map.borrow()[ast_ty.id];
+ if let def::DefTyParam(_, _, def_id, _) = path_res.base_def {
+ path_res.depth == 0 && def_id == local_def(param_id)
+ } else {
+ false
+ }
+ } else {
+ false
+ }
+}
+
+fn get_enum_variant_types<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
enum_scheme: ty::TypeScheme<'tcx>,
enum_predicates: ty::GenericPredicates<'tcx>,
variants: &[P<ast::Variant>]) {
let tcx = ccx.tcx;
+ let icx = ccx.icx(&enum_predicates);
// Create a set of parameter types shared among all the variants.
for variant in variants {
let result_ty = match variant.node.kind {
ast::TupleVariantKind(ref args) if args.len() > 0 => {
let rs = ExplicitRscope;
- let input_tys: Vec<_> = args.iter().map(|va| ccx.to_ty(&rs, &*va.ty)).collect();
- ty::mk_ctor_fn(tcx, variant_def_id, &input_tys[..], enum_scheme.ty)
+ let input_tys: Vec<_> = args.iter().map(|va| icx.to_ty(&rs, &*va.ty)).collect();
+ ty::mk_ctor_fn(tcx, variant_def_id, &input_tys, enum_scheme.ty)
}
ast::TupleVariantKind(_) => {
}
}
-fn collect_trait_methods<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn collect_trait_methods<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
trait_id: ast::NodeId,
trait_def: &ty::TraitDef<'tcx>,
trait_predicates: &ty::GenericPredicates<'tcx>) {
}
}
- fn make_method_ty<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>, m: &ty::Method<'tcx>) {
+ fn make_method_ty<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>, m: &ty::Method<'tcx>) {
ccx.tcx.tcache.borrow_mut().insert(
m.def_id,
TypeScheme {
m.predicates.clone());
}
- fn ty_method_of_trait_method<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+ fn ty_method_of_trait_method<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
trait_id: ast::NodeId,
trait_generics: &ty::Generics<'tcx>,
trait_bounds: &ty::GenericPredicates<'tcx>,
m_generics: &ast::Generics,
m_unsafety: &ast::Unsafety,
m_decl: &ast::FnDecl)
- -> ty::Method<'tcx> {
+ -> ty::Method<'tcx>
+ {
let ty_generics =
- ty_generics_for_fn_or_method(ccx,
- m_generics,
- trait_generics.clone());
+ ty_generics_for_fn(ccx, m_generics, trait_generics);
- let ty_bounds =
- ty_generic_bounds_for_fn_or_method(ccx,
- m_generics,
- &ty_generics,
- trait_bounds.clone());
+ let ty_generic_predicates =
+ ty_generic_predicates_for_fn(ccx, m_generics, trait_bounds);
let (fty, explicit_self_category) = {
let trait_self_ty = ty::mk_self_type(ccx.tcx);
- astconv::ty_of_method(ccx,
+ astconv::ty_of_method(&ccx.icx(&(trait_bounds, m_generics)),
*m_unsafety,
trait_self_ty,
m_explicit_self,
ty::Method::new(
*m_name,
ty_generics,
- ty_bounds,
+ ty_generic_predicates,
fty,
explicit_self_category,
// assume public, because this is only invoked on trait methods
}
}
-fn convert_field<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
- struct_generics: &ty::Generics<'tcx>,
- struct_predicates: &ty::GenericPredicates<'tcx>,
- v: &ast::StructField,
- origin: ast::DefId) -> ty::field_ty {
- let tt = ccx.to_ty(&ExplicitRscope, &*v.node.ty);
+fn convert_field<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
+ struct_generics: &ty::Generics<'tcx>,
+ struct_predicates: &ty::GenericPredicates<'tcx>,
+ v: &ast::StructField,
+ origin: ast::DefId)
+ -> ty::field_ty
+{
+ let tt = ccx.icx(struct_predicates).to_ty(&ExplicitRscope, &*v.node.ty);
write_ty_to_tcx(ccx.tcx, v.node.id, tt);
/* add the field to the tcache */
}
}
-fn convert_associated_type<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn convert_associated_type<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
trait_def: &ty::TraitDef<'tcx>,
associated_type: &ast::AssociatedType)
{
ccx.tcx
.impl_or_trait_items
.borrow_mut()
- .insert(associated_type.def_id,
- ty::TypeTraitItem(associated_type));
+ .insert(associated_type.def_id, ty::TypeTraitItem(associated_type));
}
-fn convert_methods<'a,'tcx,'i,I>(ccx: &CollectCtxt<'a, 'tcx>,
+fn convert_methods<'a,'tcx,'i,I>(ccx: &CrateCtxt<'a, 'tcx>,
container: ImplOrTraitItemContainer,
ms: I,
untransformed_rcvr_ty: Ty<'tcx>,
rcvr_ty_generics: &ty::Generics<'tcx>,
rcvr_ty_predicates: &ty::GenericPredicates<'tcx>,
rcvr_visibility: ast::Visibility)
- where I: Iterator<Item=&'i ast::Method> {
+ where I: Iterator<Item=&'i ast::Method>
+{
debug!("convert_methods(untransformed_rcvr_ty={}, rcvr_ty_generics={})",
untransformed_rcvr_ty.repr(ccx.tcx),
rcvr_ty_generics.repr(ccx.tcx));
.insert(mty.def_id, ty::MethodTraitItem(mty));
}
- fn ty_of_method<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+ fn ty_of_method<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
container: ImplOrTraitItemContainer,
m: &ast::Method,
untransformed_rcvr_ty: Ty<'tcx>,
rcvr_ty_generics: &ty::Generics<'tcx>,
rcvr_ty_predicates: &ty::GenericPredicates<'tcx>,
rcvr_visibility: ast::Visibility)
- -> ty::Method<'tcx> {
+ -> ty::Method<'tcx>
+ {
let m_ty_generics =
- ty_generics_for_fn_or_method(ccx,
- m.pe_generics(),
- rcvr_ty_generics.clone());
-
- let m_ty_bounds =
- ty_generic_bounds_for_fn_or_method(ccx,
- m.pe_generics(),
- &m_ty_generics,
- rcvr_ty_predicates.clone());
-
- let (fty, explicit_self_category) = astconv::ty_of_method(ccx,
- m.pe_unsafety(),
- untransformed_rcvr_ty,
- m.pe_explicit_self(),
- &*m.pe_fn_decl(),
- m.pe_abi());
+ ty_generics_for_fn(ccx, m.pe_generics(), rcvr_ty_generics);
+
+ let m_ty_generic_predicates =
+ ty_generic_predicates_for_fn(ccx, m.pe_generics(), rcvr_ty_predicates);
+
+ let (fty, explicit_self_category) =
+ astconv::ty_of_method(&ccx.icx(&(rcvr_ty_predicates, m.pe_generics())),
+ m.pe_unsafety(),
+ untransformed_rcvr_ty,
+ m.pe_explicit_self(),
+ &*m.pe_fn_decl(),
+ m.pe_abi());
// if the method specifies a visibility, use that, otherwise
// inherit the visibility from the impl (so `foo` in `pub impl
ty::Method::new(m.pe_ident().name,
m_ty_generics,
- m_ty_bounds,
+ m_ty_generic_predicates,
fty,
explicit_self_category,
method_vis,
}
}
-fn ensure_no_ty_param_bounds(ccx: &CollectCtxt,
+fn ensure_no_ty_param_bounds(ccx: &CrateCtxt,
span: Span,
generics: &ast::Generics,
thing: &'static str) {
}
}
-fn convert_item(ccx: &CollectCtxt, it: &ast::Item) {
+fn convert_item(ccx: &CrateCtxt, it: &ast::Item) {
let tcx = ccx.tcx;
debug!("convert: item {} with id {}", token::get_ident(it.ident), it.id);
match it.node {
&enum_definition.variants);
},
ast::ItemDefaultImpl(_, ref ast_trait_ref) => {
- let trait_ref = astconv::instantiate_trait_ref(ccx, &ExplicitRscope,
- ast_trait_ref, None, None);
+ let trait_ref = astconv::instantiate_trait_ref(&ccx.icx(&()),
+ &ExplicitRscope,
+ ast_trait_ref,
+ Some(it.id),
+ None,
+ None);
ty::record_default_trait_implementation(tcx, trait_ref.def_id, local_def(it.id))
}
debug!("convert: ast_generics={:?}", generics);
let ty_generics = ty_generics_for_type_or_impl(ccx, generics);
- let ty_predicates = ty_generic_bounds_for_type_or_impl(ccx, &ty_generics, generics);
+ let ty_predicates = ty_generic_predicates_for_type_or_impl(ccx, generics);
debug!("convert: impl_bounds={:?}", ty_predicates);
- let selfty = ccx.to_ty(&ExplicitRscope, &**selfty);
+ let selfty = ccx.icx(&ty_predicates).to_ty(&ExplicitRscope, &**selfty);
write_ty_to_tcx(tcx, it.id, selfty);
tcx.tcache.borrow_mut().insert(local_def(it.id),
for impl_item in impl_items {
match *impl_item {
ast::MethodImplItem(ref method) => {
- let body_id = method.pe_body().id;
- check_method_self_type(ccx,
- &BindingRscope::new(),
- selfty,
- method.pe_explicit_self(),
- body_id);
methods.push(&**method);
}
ast::TypeImplItem(ref typedef) => {
"associated items are not allowed in inherent impls");
}
- let typ = ccx.to_ty(&ExplicitRscope, &*typedef.typ);
+ let typ = ccx.icx(&ty_predicates).to_ty(&ExplicitRscope, &*typedef.typ);
tcx.tcache.borrow_mut().insert(local_def(typedef.id),
TypeScheme {
generics: ty::Generics::empty(),
&ty_predicates,
parent_visibility);
+ for impl_item in impl_items {
+ match *impl_item {
+ ast::MethodImplItem(ref method) => {
+ let body_id = method.pe_body().id;
+ check_method_self_type(ccx,
+ &BindingRscope::new(),
+ ccx.method_ty(method.id),
+ selfty,
+ method.pe_explicit_self(),
+ body_id);
+ }
+ ast::TypeImplItem(..) => { }
+ }
+ }
+
if let Some(ref trait_ref) = *opt_trait_ref {
- astconv::instantiate_trait_ref(ccx,
+ astconv::instantiate_trait_ref(&ccx.icx(&ty_predicates),
&ExplicitRscope,
trait_ref,
+ Some(it.id),
Some(selfty),
None);
}
generics,
local_def(it.id));
},
- ast::ItemTrait(_, _, _, ref trait_methods) => {
+ ast::ItemTrait(_, _, _, ref trait_items) => {
let trait_def = trait_def_of_item(ccx, it);
convert_trait_predicates(ccx, it);
let trait_predicates = ty::lookup_predicates(ccx.tcx, local_def(it.id));
debug!("convert: trait_bounds={:?}", trait_predicates);
- for trait_method in trait_methods {
+ // Run convert_methods on the provided methods.
+ let untransformed_rcvr_ty = ty::mk_self_type(tcx);
+ convert_methods(ccx,
+ TraitContainer(local_def(it.id)),
+ trait_items.iter().filter_map(|m| match *m {
+ ast::RequiredMethod(_) => None,
+ ast::ProvidedMethod(ref m) => Some(&**m),
+ ast::TypeTraitItem(_) => None,
+ }),
+ untransformed_rcvr_ty,
+ &trait_def.generics,
+ &trait_predicates,
+ it.vis);
+
+ // We need to do this *after* converting methods, since
+ // convert_methods produces a tcache entry that is wrong for
+ // static trait methods. This is somewhat unfortunate.
+ collect_trait_methods(ccx, it.id, &*trait_def, &trait_predicates);
+
+ // This must be done after `collect_trait_methods` so that
+ // we have a method type stored for every method.
+ for trait_item in trait_items {
let self_type = ty::mk_self_type(tcx);
- match *trait_method {
+ match *trait_item {
ast::RequiredMethod(ref type_method) => {
let rscope = BindingRscope::new();
check_method_self_type(ccx,
&rscope,
+ ccx.method_ty(type_method.id),
self_type,
&type_method.explicit_self,
it.id)
ast::ProvidedMethod(ref method) => {
check_method_self_type(ccx,
&BindingRscope::new(),
+ ccx.method_ty(method.id),
self_type,
method.pe_explicit_self(),
it.id)
}
}
}
-
- // Run convert_methods on the provided methods.
- let untransformed_rcvr_ty = ty::mk_self_type(tcx);
- convert_methods(ccx,
- TraitContainer(local_def(it.id)),
- trait_methods.iter().filter_map(|m| match *m {
- ast::RequiredMethod(_) => None,
- ast::ProvidedMethod(ref m) => Some(&**m),
- ast::TypeTraitItem(_) => None,
- }),
- untransformed_rcvr_ty,
- &trait_def.generics,
- &trait_predicates,
- it.vis);
-
- // We need to do this *after* converting methods, since
- // convert_methods produces a tcache entry that is wrong for
- // static trait methods. This is somewhat unfortunate.
- collect_trait_methods(ccx, it.id, &*trait_def, &trait_predicates);
},
ast::ItemStruct(ref struct_def, _) => {
// Write the class type.
}
}
-fn convert_struct<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn convert_struct<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
struct_def: &ast::StructDef,
scheme: ty::TypeScheme<'tcx>,
predicates: ty::GenericPredicates<'tcx>,
}
}
-fn get_trait_def<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn get_trait_def<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
trait_id: ast::DefId)
-> Rc<ty::TraitDef<'tcx>> {
let tcx = ccx.tcx;
}
}
-fn trait_def_of_item<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn trait_def_of_item<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
it: &ast::Item)
-> Rc<ty::TraitDef<'tcx>>
{
let self_param_ty = ty::ParamTy::for_self().to_ty(ccx.tcx);
// supertraits:
- let bounds = compute_bounds(ccx,
+ let bounds = compute_bounds(&ccx.icx(generics),
self_param_ty,
bounds,
SizedByDefault::No,
return trait_def;
- fn mk_trait_substs<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+ fn mk_trait_substs<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
generics: &ast::Generics)
- -> subst::Substs<'tcx>
+ -> Substs<'tcx>
{
let tcx = ccx.tcx;
.iter()
.enumerate()
.map(|(i, def)| ty::ReEarlyBound(def.lifetime.id,
- subst::TypeSpace,
+ TypeSpace,
i as u32,
def.lifetime.name))
.collect();
generics.ty_params
.iter()
.enumerate()
- .map(|(i, def)| ty::mk_param(tcx, subst::TypeSpace,
+ .map(|(i, def)| ty::mk_param(tcx, TypeSpace,
i as u32, def.ident.name))
.collect();
// ...and also create the `Self` parameter.
let self_ty = ty::mk_self_type(tcx);
- subst::Substs::new_trait(types, regions, self_ty)
+ Substs::new_trait(types, regions, self_ty)
}
}
-fn convert_trait_predicates<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>, it: &ast::Item) {
+fn convert_trait_predicates<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>, it: &ast::Item) {
let tcx = ccx.tcx;
let trait_def = trait_def_of_item(ccx, it);
let super_predicates = ty::predicates(ccx.tcx, self_param_ty, &trait_def.bounds);
- let assoc_predicates = predicates_for_associated_types(ccx, &trait_def.trait_ref, items);
-
- // `ty_generic_bounds` below will consider the bounds on the type
+ // `ty_generic_predicates` below will consider the bounds on the type
// parameters (including `Self`) and the explicit where-clauses,
// but to get the full set of predicates on a trait we need to add
// in the supertrait bounds and anything declared on the
ty::GenericPredicates {
predicates: VecPerParamSpace::new(super_predicates, vec![], vec![])
};
- base_predicates.predicates.extend(subst::TypeSpace, assoc_predicates.into_iter());
- let self_bounds = &trait_def.generics.types.get_self().unwrap().bounds;
- base_predicates.predicates.extend(
- subst::SelfSpace,
- ty::predicates(ccx.tcx, self_param_ty, self_bounds).into_iter());
+ // Add in a predicate that `Self:Trait` (where `Trait` is the
+ // current trait). This is needed for builtin bounds.
+ let self_predicate = trait_def.trait_ref.to_poly_trait_ref().as_predicate();
+ base_predicates.predicates.push(SelfSpace, self_predicate);
// add in the explicit where-clauses
- let trait_predicates =
- ty_generic_bounds(ccx,
- subst::TypeSpace,
- &trait_def.generics,
- base_predicates,
- &generics.where_clause);
+ let mut trait_predicates =
+ ty_generic_predicates(ccx, TypeSpace, generics, &base_predicates);
+
+ let assoc_predicates = predicates_for_associated_types(ccx,
+ generics,
+ &trait_predicates,
+ &trait_def.trait_ref,
+ items);
+ trait_predicates.predicates.extend(TypeSpace, assoc_predicates.into_iter());
let prev_predicates = tcx.predicates.borrow_mut().insert(def_id, trait_predicates);
assert!(prev_predicates.is_none());
return;
- fn predicates_for_associated_types<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+ fn predicates_for_associated_types<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
+ ast_generics: &ast::Generics,
+ trait_predicates: &ty::GenericPredicates<'tcx>,
self_trait_ref: &Rc<ty::TraitRef<'tcx>>,
trait_items: &[ast::TraitItem])
-> Vec<ty::Predicate<'tcx>>
self_trait_ref.clone(),
assoc_type_def.ident.name);
- let bounds = compute_bounds(ccx,
+ let bounds = compute_bounds(&ccx.icx(&(ast_generics, trait_predicates)),
assoc_ty,
&*assoc_type_def.bounds,
SizedByDefault::Yes,
}
}
-fn type_scheme_of_item<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
+fn type_scheme_of_def_id<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ def_id: ast::DefId)
+ -> ty::TypeScheme<'tcx>
+{
+ if def_id.krate != ast::LOCAL_CRATE {
+ return ty::lookup_item_type(ccx.tcx, def_id);
+ }
+
+ match ccx.tcx.map.find(def_id.node) {
+ Some(ast_map::NodeItem(item)) => {
+ type_scheme_of_item(ccx, &*item)
+ }
+ Some(ast_map::NodeForeignItem(foreign_item)) => {
+ let abi = ccx.tcx.map.get_foreign_abi(def_id.node);
+ type_scheme_of_foreign_item(ccx, &*foreign_item, abi)
+ }
+ x => {
+ ccx.tcx.sess.bug(&format!("unexpected sort of node \
+ in get_item_type_scheme(): {:?}",
+ x));
+ }
+ }
+}
+
+fn type_scheme_of_item<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
it: &ast::Item)
-> ty::TypeScheme<'tcx>
{
|_| compute_type_scheme_of_item(ccx, it))
}
-
-fn compute_type_scheme_of_item<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- it: &ast::Item)
- -> ty::TypeScheme<'tcx>
+fn compute_type_scheme_of_item<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ it: &ast::Item)
+ -> ty::TypeScheme<'tcx>
{
let tcx = ccx.tcx;
match it.node {
ast::ItemStatic(ref t, _, _) | ast::ItemConst(ref t, _) => {
- let ty = ccx.to_ty(&ExplicitRscope, &**t);
+ let ty = ccx.icx(&()).to_ty(&ExplicitRscope, &**t);
ty::TypeScheme { ty: ty, generics: ty::Generics::empty() }
}
ast::ItemFn(ref decl, unsafety, abi, ref generics, _) => {
- let ty_generics = ty_generics_for_fn_or_method(ccx,
- generics,
- ty::Generics::empty());
- let tofd = astconv::ty_of_bare_fn(ccx, unsafety, abi, &**decl);
+ let ty_generics = ty_generics_for_fn(ccx, generics, &ty::Generics::empty());
+ let tofd = astconv::ty_of_bare_fn(&ccx.icx(generics), unsafety, abi, &**decl);
let ty = ty::mk_bare_fn(tcx, Some(local_def(it.id)), tcx.mk_bare_fn(tofd));
ty::TypeScheme { ty: ty, generics: ty_generics }
}
ast::ItemTy(ref t, ref generics) => {
- let ty = ccx.to_ty(&ExplicitRscope, &**t);
let ty_generics = ty_generics_for_type_or_impl(ccx, generics);
+ let ty = ccx.icx(generics).to_ty(&ExplicitRscope, &**t);
ty::TypeScheme { ty: ty, generics: ty_generics }
}
ast::ItemEnum(_, ref generics) => {
}
}
-fn convert_typed_item<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn convert_typed_item<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
it: &ast::Item)
-> (ty::TypeScheme<'tcx>, ty::GenericPredicates<'tcx>)
{
ty::GenericPredicates::empty()
}
ast::ItemFn(_, _, _, ref ast_generics, _) => {
- ty_generic_bounds_for_fn_or_method(ccx,
- ast_generics,
- &scheme.generics,
- ty::GenericPredicates::empty())
+ ty_generic_predicates_for_fn(ccx, ast_generics, &ty::GenericPredicates::empty())
}
ast::ItemTy(_, ref generics) => {
- ty_generic_bounds_for_type_or_impl(ccx, &scheme.generics, generics)
+ ty_generic_predicates_for_type_or_impl(ccx, generics)
}
ast::ItemEnum(_, ref generics) => {
- ty_generic_bounds_for_type_or_impl(ccx, &scheme.generics, generics)
+ ty_generic_predicates_for_type_or_impl(ccx, generics)
}
ast::ItemStruct(_, ref generics) => {
- ty_generic_bounds_for_type_or_impl(ccx, &scheme.generics, generics)
+ ty_generic_predicates_for_type_or_impl(ccx, generics)
}
ast::ItemDefaultImpl(..) |
ast::ItemTrait(..) |
ast::ItemMac(..) => {
tcx.sess.span_bug(
it.span,
- format!("compute_type_scheme_of_item: unexpected item type: {:?}",
- it.node).as_slice());
+ &format!("compute_type_scheme_of_item: unexpected item type: {:?}",
+ it.node));
}
};
Some(ty::ObjectLifetimeDefault::Specific(r)) =>
r.user_string(tcx),
d =>
- d.repr(ccx.tcx()),
+ d.repr(ccx.tcx),
})
.collect::<Vec<String>>()
.connect(",");
}
fn type_scheme_of_foreign_item<'a, 'tcx>(
- ccx: &CollectCtxt<'a, 'tcx>,
+ ccx: &CrateCtxt<'a, 'tcx>,
it: &ast::ForeignItem,
abi: abi::Abi)
-> ty::TypeScheme<'tcx>
{
- memoized(&ccx.tcx().tcache,
+ memoized(&ccx.tcx.tcache,
local_def(it.id),
|_| compute_type_scheme_of_foreign_item(ccx, it, abi))
}
fn compute_type_scheme_of_foreign_item<'a, 'tcx>(
- ccx: &CollectCtxt<'a, 'tcx>,
+ ccx: &CrateCtxt<'a, 'tcx>,
it: &ast::ForeignItem,
abi: abi::Abi)
-> ty::TypeScheme<'tcx>
ast::ForeignItemStatic(ref t, _) => {
ty::TypeScheme {
generics: ty::Generics::empty(),
- ty: ast_ty_to_ty(ccx, &ExplicitRscope, t)
+ ty: ast_ty_to_ty(&ccx.icx(&()), &ExplicitRscope, t)
}
}
}
}
-fn convert_foreign_item<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn convert_foreign_item<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
it: &ast::ForeignItem)
{
// For reasons I cannot fully articulate, I do so hate the AST
let predicates = match it.node {
ast::ForeignItemFn(_, ref generics) => {
- ty_generic_bounds_for_fn_or_method(ccx,
- generics,
- &scheme.generics,
- ty::GenericPredicates::empty())
+ ty_generic_predicates_for_fn(ccx, generics, &ty::GenericPredicates::empty())
}
ast::ForeignItemStatic(..) => {
ty::GenericPredicates::empty()
assert!(prev_predicates.is_none());
}
-fn ty_generics_for_type_or_impl<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn ty_generics_for_type_or_impl<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
generics: &ast::Generics)
-> ty::Generics<'tcx> {
- ty_generics(ccx,
- subst::TypeSpace,
- &generics.lifetimes,
- &generics.ty_params,
- &generics.where_clause,
- ty::Generics::empty())
+ ty_generics(ccx, TypeSpace, generics, &ty::Generics::empty())
}
-fn ty_generic_bounds_for_type_or_impl<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- ty_generics: &ty::Generics<'tcx>,
- generics: &ast::Generics)
- -> ty::GenericPredicates<'tcx>
+fn ty_generic_predicates_for_type_or_impl<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ generics: &ast::Generics)
+ -> ty::GenericPredicates<'tcx>
{
- ty_generic_bounds(ccx,
- subst::TypeSpace,
- ty_generics,
- ty::GenericPredicates::empty(),
- &generics.where_clause)
+ ty_generic_predicates(ccx, TypeSpace, generics, &ty::GenericPredicates::empty())
}
-fn ty_generics_for_trait<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn ty_generics_for_trait<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
trait_id: ast::NodeId,
- substs: &'tcx subst::Substs<'tcx>,
+ substs: &'tcx Substs<'tcx>,
ast_generics: &ast::Generics)
-> ty::Generics<'tcx>
{
debug!("ty_generics_for_trait(trait_id={}, substs={})",
local_def(trait_id).repr(ccx.tcx), substs.repr(ccx.tcx));
- let mut generics =
- ty_generics(ccx,
- subst::TypeSpace,
- &ast_generics.lifetimes,
- &ast_generics.ty_params,
- &ast_generics.where_clause,
- ty::Generics::empty());
+ let mut generics = ty_generics_for_type_or_impl(ccx, ast_generics);
// Add in the self type parameter.
//
// the node id for the Self type parameter.
let param_id = trait_id;
- let self_trait_ref =
- Rc::new(ty::TraitRef { def_id: local_def(trait_id),
- substs: substs });
-
let def = ty::TypeParameterDef {
- space: subst::SelfSpace,
+ space: SelfSpace,
index: 0,
name: special_idents::type_self.name,
def_id: local_def(param_id),
- bounds: ty::ParamBounds {
- region_bounds: vec!(),
- builtin_bounds: ty::empty_builtin_bounds(),
- trait_bounds: vec!(ty::Binder(self_trait_ref.clone())),
- projection_bounds: vec!(),
- },
default: None,
object_lifetime_default: None,
};
ccx.tcx.ty_param_defs.borrow_mut().insert(param_id, def.clone());
- generics.types.push(subst::SelfSpace, def);
+ generics.types.push(SelfSpace, def);
return generics;
}
-fn ty_generics_for_fn_or_method<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- generics: &ast::Generics,
- base_generics: ty::Generics<'tcx>)
- -> ty::Generics<'tcx>
+fn ty_generics_for_fn<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ generics: &ast::Generics,
+ base_generics: &ty::Generics<'tcx>)
+ -> ty::Generics<'tcx>
{
- let early_lifetimes = resolve_lifetime::early_bound_lifetimes(generics);
- ty_generics(ccx,
- subst::FnSpace,
- &early_lifetimes[..],
- &generics.ty_params,
- &generics.where_clause,
- base_generics)
+ ty_generics(ccx, FnSpace, generics, base_generics)
}
-fn ty_generic_bounds_for_fn_or_method<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- generics: &ast::Generics,
- ty_generics: &ty::Generics<'tcx>,
- base: ty::GenericPredicates<'tcx>)
- -> ty::GenericPredicates<'tcx>
+fn ty_generic_predicates_for_fn<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ generics: &ast::Generics,
+ base_predicates: &ty::GenericPredicates<'tcx>)
+ -> ty::GenericPredicates<'tcx>
{
- ty_generic_bounds(ccx,
- subst::FnSpace,
- ty_generics,
- base,
- &generics.where_clause)
+ ty_generic_predicates(ccx, FnSpace, generics, base_predicates)
}
// Add the Sized bound, unless the type parameter is marked as `?Sized`.
-fn add_unsized_bound<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- bounds: &mut ty::BuiltinBounds,
- ast_bounds: &[ast::TyParamBound],
- span: Span)
+fn add_unsized_bound<'tcx>(astconv: &AstConv<'tcx>,
+ bounds: &mut ty::BuiltinBounds,
+ ast_bounds: &[ast::TyParamBound],
+ span: Span)
{
+ let tcx = astconv.tcx();
+
// Try to find an unbound in bounds.
let mut unbound = None;
for ab in ast_bounds {
assert!(ptr.bound_lifetimes.is_empty());
unbound = Some(ptr.trait_ref.clone());
} else {
- span_err!(ccx.tcx.sess, span, E0203,
+ span_err!(tcx.sess, span, E0203,
"type parameter has more than one relaxed default \
bound, only one is supported");
}
}
}
- let kind_id = ccx.tcx.lang_items.require(SizedTraitLangItem);
+ let kind_id = tcx.lang_items.require(SizedTraitLangItem);
match unbound {
Some(ref tpb) => {
// FIXME(#8559) currently requires the unbound to be built-in.
- let trait_def_id = ty::trait_ref_to_def_id(ccx.tcx, tpb);
+ let trait_def_id = ty::trait_ref_to_def_id(tcx, tpb);
match kind_id {
Ok(kind_id) if trait_def_id != kind_id => {
- ccx.tcx.sess.span_warn(span,
- "default bound relaxed for a type parameter, but \
- this does nothing because the given bound is not \
- a default. Only `?Sized` is supported");
- ty::try_add_builtin_trait(ccx.tcx,
- kind_id,
- bounds);
+ tcx.sess.span_warn(span,
+ "default bound relaxed for a type parameter, but \
+ this does nothing because the given bound is not \
+ a default. Only `?Sized` is supported");
+ ty::try_add_builtin_trait(tcx, kind_id, bounds);
}
_ => {}
}
}
_ if kind_id.is_ok() => {
- ty::try_add_builtin_trait(ccx.tcx, kind_id.unwrap(), bounds);
+ ty::try_add_builtin_trait(tcx, kind_id.unwrap(), bounds);
}
// No lang item for Sized, so we can't add it as a bound.
None => {}
}
}
-fn ty_generic_bounds<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- space: subst::ParamSpace,
- generics: &ty::Generics<'tcx>,
- base: ty::GenericPredicates<'tcx>,
- where_clause: &ast::WhereClause)
- -> ty::GenericPredicates<'tcx>
+/// Returns the early-bound lifetimes declared in this generics
+/// listing. For anything other than fns/methods, this is just all
+/// the lifetimes that are declared. For fns or methods, we have to
+/// screen out those that do not appear in any where-clauses etc using
+/// `resolve_lifetime::early_bound_lifetimes`.
+fn early_bound_lifetimes_from_generics(space: ParamSpace,
+ ast_generics: &ast::Generics)
+ -> Vec<ast::LifetimeDef>
+{
+ match space {
+ SelfSpace | TypeSpace => ast_generics.lifetimes.to_vec(),
+ FnSpace => resolve_lifetime::early_bound_lifetimes(ast_generics),
+ }
+}
+
+fn ty_generic_predicates<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ space: ParamSpace,
+ ast_generics: &ast::Generics,
+ base_predicates: &ty::GenericPredicates<'tcx>)
+ -> ty::GenericPredicates<'tcx>
{
let tcx = ccx.tcx;
- let mut result = base;
-
- // For now, scrape the bounds out of parameters from Generics. This is not great.
- for def in generics.regions.get_slice(space) {
- let r_a = def.to_early_bound_region();
- for &r_b in &def.bounds {
- let outlives = ty::Binder(ty::OutlivesPredicate(r_a, r_b));
- result.predicates.push(def.space, ty::Predicate::RegionOutlives(outlives));
- }
+ let mut result = base_predicates.clone();
+
+ // Collect the predicates that were written inline by the user on each
+ // type parameter (e.g., `<T:Foo>`).
+ for (index, param) in ast_generics.ty_params.iter().enumerate() {
+ let index = index as u32;
+ let param_ty = ty::ParamTy::new(space, index, param.ident.name).to_ty(ccx.tcx);
+ let bounds = compute_bounds(&ccx.icx(&(base_predicates, ast_generics)),
+ param_ty,
+ ¶m.bounds,
+ SizedByDefault::Yes,
+ param.span);
+ let predicates = ty::predicates(ccx.tcx, param_ty, &bounds);
+ result.predicates.extend(space, predicates.into_iter());
}
- for def in generics.types.get_slice(space) {
- let t = ty::mk_param_from_def(ccx.tcx, def);
- result.predicates.extend(def.space, ty::predicates(ccx.tcx, t, &def.bounds).into_iter());
+
+ // Collect the region predicates that were declared inline as
+ // well. In the case of parameters declared on a fn or method, we
+ // have to be careful to only iterate over early-bound regions.
+ let early_lifetimes = early_bound_lifetimes_from_generics(space, ast_generics);
+ for (index, param) in early_lifetimes.iter().enumerate() {
+ let index = index as u32;
+ let region = ty::ReEarlyBound(param.lifetime.id, space, index, param.lifetime.name);
+ for bound in ¶m.bounds {
+ let bound_region = ast_region_to_region(ccx.tcx, bound);
+ let outlives = ty::Binder(ty::OutlivesPredicate(region, bound_region));
+ result.predicates.push(space, outlives.as_predicate());
+ }
}
- // Add the bounds not associated with a type parameter
+ // Add in the bounds that appear in the where-clause
+ let where_clause = &ast_generics.where_clause;
for predicate in &where_clause.predicates {
match predicate {
&ast::WherePredicate::BoundPredicate(ref bound_pred) => {
- let ty = ast_ty_to_ty(ccx, &ExplicitRscope, &*bound_pred.bounded_ty);
+ let ty = ast_ty_to_ty(&ccx.icx(&(base_predicates, ast_generics)),
+ &ExplicitRscope,
+ &*bound_pred.bounded_ty);
for bound in &*bound_pred.bounds {
match bound {
&ast::TyParamBound::TraitTyParamBound(ref poly_trait_ref, _) => {
let mut projections = Vec::new();
- let trait_ref = astconv::instantiate_poly_trait_ref(
- ccx,
- &ExplicitRscope,
- poly_trait_ref,
- Some(ty),
- &mut projections,
- );
+ let trait_ref =
+ conv_poly_trait_ref(&ccx.icx(&(base_predicates, ast_generics)),
+ ty,
+ poly_trait_ref,
+ &mut projections);
result.predicates.push(space, trait_ref.as_predicate());
return result;
}
-fn ty_generics<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- space: subst::ParamSpace,
- lifetime_defs: &[ast::LifetimeDef],
- types: &[ast::TyParam],
- where_clause: &ast::WhereClause,
- base_generics: ty::Generics<'tcx>)
+fn ty_generics<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ space: ParamSpace,
+ ast_generics: &ast::Generics,
+ base_generics: &ty::Generics<'tcx>)
-> ty::Generics<'tcx>
{
let tcx = ccx.tcx;
- let mut result = base_generics;
+ let mut result = base_generics.clone();
- for (i, l) in lifetime_defs.iter().enumerate() {
+ let early_lifetimes = early_bound_lifetimes_from_generics(space, ast_generics);
+ for (i, l) in early_lifetimes.iter().enumerate() {
let bounds = l.bounds.iter()
.map(|l| ast_region_to_region(tcx, l))
.collect();
index: i as u32,
def_id: local_def(l.lifetime.id),
bounds: bounds };
- // debug!("ty_generics: def for region param: {:?}",
- // def.repr(tcx));
result.regions.push(space, def);
}
assert!(result.types.is_empty_in(space));
// Now create the real type parameters.
- for (i, param) in types.iter().enumerate() {
- let def = get_or_create_type_parameter_def(ccx, space, param, i as u32, where_clause);
+ for i in 0..ast_generics.ty_params.len() {
+ let def = get_or_create_type_parameter_def(ccx, ast_generics, space, i as u32);
debug!("ty_generics: def for type param: {:?}, {:?}", def, space);
result.types.push(space, def);
}
result
}
-fn get_or_create_type_parameter_def<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- space: subst::ParamSpace,
- param: &ast::TyParam,
- index: u32,
- where_clause: &ast::WhereClause)
+fn get_or_create_type_parameter_def<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ ast_generics: &ast::Generics,
+ space: ParamSpace,
+ index: u32)
-> ty::TypeParameterDef<'tcx>
{
+ let param = &ast_generics.ty_params[index as usize];
+
let tcx = ccx.tcx;
match tcx.ty_param_defs.borrow().get(¶m.id) {
Some(d) => { return d.clone(); }
None => { }
}
- let param_ty = ty::ParamTy::new(space, index, param.ident.name);
- let bounds = compute_bounds(ccx,
- param_ty.to_ty(ccx.tcx),
- ¶m.bounds,
- SizedByDefault::Yes,
- param.span);
let default = match param.default {
None => None,
Some(ref path) => {
- let ty = ast_ty_to_ty(ccx, &ExplicitRscope, &**path);
+ let ty = ast_ty_to_ty(&ccx.icx(&()), &ExplicitRscope, &**path);
let cur_idx = index;
ty::walk_ty(ty, |t| {
};
let object_lifetime_default =
- compute_object_lifetime_default(ccx, space, index, ¶m.bounds, where_clause);
+ compute_object_lifetime_default(ccx, param.id,
+ ¶m.bounds, &ast_generics.where_clause);
let def = ty::TypeParameterDef {
space: space,
index: index,
name: param.ident.name,
def_id: local_def(param.id),
- bounds: bounds,
default: default,
object_lifetime_default: object_lifetime_default,
};
/// intentionally avoid just asking astconv to convert all the where
/// clauses into a `ty::Predicate`. This is because that could induce
/// artificial cycles.
-fn compute_object_lifetime_default<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- space: subst::ParamSpace,
- index: u32,
+fn compute_object_lifetime_default<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ param_id: ast::NodeId,
param_bounds: &[ast::TyParamBound],
where_clause: &ast::WhereClause)
-> Option<ty::ObjectLifetimeDefault>
{
let inline_bounds = from_bounds(ccx, param_bounds);
- let where_bounds = from_predicates(ccx, space, index, &where_clause.predicates);
+ let where_bounds = from_predicates(ccx, param_id, &where_clause.predicates);
let all_bounds: HashSet<_> = inline_bounds.into_iter()
.chain(where_bounds.into_iter())
.collect();
.map(ty::ObjectLifetimeDefault::Specific)
};
- fn from_bounds<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
+ fn from_bounds<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
bounds: &[ast::TyParamBound])
-> Vec<ty::Region>
{
ast::TraitTyParamBound(..) =>
None,
ast::RegionTyParamBound(ref lifetime) =>
- Some(astconv::ast_region_to_region(ccx.tcx(), lifetime)),
+ Some(astconv::ast_region_to_region(ccx.tcx, lifetime)),
}
})
.collect()
}
- fn from_predicates<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- space: subst::ParamSpace,
- index: u32,
+ fn from_predicates<'a,'tcx>(ccx: &CrateCtxt<'a,'tcx>,
+ param_id: ast::NodeId,
predicates: &[ast::WherePredicate])
-> Vec<ty::Region>
{
match *predicate {
ast::WherePredicate::BoundPredicate(ref data) => {
if data.bound_lifetimes.len() == 0 &&
- is_param(ccx, &data.bounded_ty, space, index)
+ is_param(ccx.tcx, &data.bounded_ty, param_id)
{
from_bounds(ccx, &data.bounds).into_iter()
} else {
})
.collect()
}
-
- fn is_param(ccx: &CollectCtxt,
- ast_ty: &ast::Ty,
- space: subst::ParamSpace,
- index: u32)
- -> bool
- {
- match ast_ty.node {
- ast::TyPath(_, id) => {
- match ccx.tcx.def_map.borrow()[id] {
- def::DefTyParam(s, i, _, _) => {
- space == s && index == i
- }
- _ => {
- false
- }
- }
- }
- _ => {
- false
- }
- }
- }
}
enum SizedByDefault { Yes, No }
/// Translate the AST's notion of ty param bounds (which are an enum consisting of a newtyped Ty or
/// a region) to ty's notion of ty param bounds, which can either be user-defined traits, or the
/// built-in trait (formerly known as kind): Send.
-fn compute_bounds<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- param_ty: ty::Ty<'tcx>,
- ast_bounds: &[ast::TyParamBound],
- sized_by_default: SizedByDefault,
- span: Span)
- -> ty::ParamBounds<'tcx>
+fn compute_bounds<'tcx>(astconv: &AstConv<'tcx>,
+ param_ty: ty::Ty<'tcx>,
+ ast_bounds: &[ast::TyParamBound],
+ sized_by_default: SizedByDefault,
+ span: Span)
+ -> ty::ParamBounds<'tcx>
{
- let mut param_bounds = conv_param_bounds(ccx,
+ let mut param_bounds = conv_param_bounds(astconv,
span,
param_ty,
ast_bounds);
if let SizedByDefault::Yes = sized_by_default {
- add_unsized_bound(ccx,
+ add_unsized_bound(astconv,
&mut param_bounds.builtin_bounds,
ast_bounds,
span);
- check_bounds_compatible(ccx,
+ check_bounds_compatible(astconv,
param_ty,
¶m_bounds,
span);
param_bounds
}
-fn check_bounds_compatible<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
- param_ty: Ty<'tcx>,
- param_bounds: &ty::ParamBounds<'tcx>,
- span: Span) {
+fn check_bounds_compatible<'tcx>(astconv: &AstConv<'tcx>,
+ param_ty: Ty<'tcx>,
+ param_bounds: &ty::ParamBounds<'tcx>,
+ span: Span) {
+ let tcx = astconv.tcx();
if !param_bounds.builtin_bounds.contains(&ty::BoundSized) {
ty::each_bound_trait_and_supertraits(
- ccx.tcx,
+ tcx,
¶m_bounds.trait_bounds,
|trait_ref| {
- let trait_def = ccx.get_trait_def(trait_ref.def_id());
- if trait_def.bounds.builtin_bounds.contains(&ty::BoundSized) {
- span_err!(ccx.tcx.sess, span, E0129,
- "incompatible bounds on `{}`, \
- bound `{}` does not allow unsized type",
- param_ty.user_string(ccx.tcx),
- trait_ref.user_string(ccx.tcx));
+ match astconv.get_trait_def(span, trait_ref.def_id()) {
+ Ok(trait_def) => {
+ if trait_def.bounds.builtin_bounds.contains(&ty::BoundSized) {
+ span_err!(tcx.sess, span, E0129,
+ "incompatible bounds on `{}`, \
+ bound `{}` does not allow unsized type",
+ param_ty.user_string(tcx),
+ trait_ref.user_string(tcx));
+ }
+ }
+ Err(ErrorReported) => { }
}
true
});
}
}
-fn conv_param_bounds<'a,'tcx>(ccx: &CollectCtxt<'a,'tcx>,
+/// Converts a specific TyParamBound from the AST into the
+/// appropriate poly-trait-reference.
+fn poly_trait_ref_from_bound<'tcx>(astconv: &AstConv<'tcx>,
+ param_ty: Ty<'tcx>,
+ bound: &ast::TyParamBound,
+ projections: &mut Vec<ty::PolyProjectionPredicate<'tcx>>)
+ -> Option<ty::PolyTraitRef<'tcx>>
+{
+ match *bound {
+ ast::TraitTyParamBound(ref tr, ast::TraitBoundModifier::None) => {
+ Some(conv_poly_trait_ref(astconv, param_ty, tr, projections))
+ }
+ ast::TraitTyParamBound(_, ast::TraitBoundModifier::Maybe) |
+ ast::RegionTyParamBound(_) => {
+ None
+ }
+ }
+}
+
+fn conv_poly_trait_ref<'tcx>(astconv: &AstConv<'tcx>,
+ param_ty: Ty<'tcx>,
+ trait_ref: &ast::PolyTraitRef,
+ projections: &mut Vec<ty::PolyProjectionPredicate<'tcx>>)
+ -> ty::PolyTraitRef<'tcx>
+{
+ astconv::instantiate_poly_trait_ref(astconv,
+ &ExplicitRscope,
+ trait_ref,
+ Some(param_ty),
+ projections)
+}
+
+fn conv_param_bounds<'a,'tcx>(astconv: &AstConv<'tcx>,
span: Span,
param_ty: ty::Ty<'tcx>,
ast_bounds: &[ast::TyParamBound])
-> ty::ParamBounds<'tcx>
{
- let tcx = ccx.tcx;
+ let tcx = astconv.tcx();
let astconv::PartitionedBounds {
builtin_bounds,
trait_bounds,
let mut projection_bounds = Vec::new();
let trait_bounds: Vec<ty::PolyTraitRef> =
- trait_bounds.into_iter()
- .map(|bound| {
- astconv::instantiate_poly_trait_ref(ccx,
- &ExplicitRscope,
- bound,
- Some(param_ty),
- &mut projection_bounds)
- })
- .collect();
+ trait_bounds.iter()
+ .map(|bound| conv_poly_trait_ref(astconv,
+ param_ty,
+ *bound,
+ &mut projection_bounds))
+ .collect();
let region_bounds: Vec<ty::Region> =
region_bounds.into_iter()
- .map(|r| ast_region_to_region(ccx.tcx, r))
+ .map(|r| ast_region_to_region(tcx, r))
.collect();
ty::ParamBounds {
}
fn compute_type_scheme_of_foreign_fn_decl<'a, 'tcx>(
- ccx: &CollectCtxt<'a, 'tcx>,
+ ccx: &CrateCtxt<'a, 'tcx>,
decl: &ast::FnDecl,
ast_generics: &ast::Generics,
abi: abi::Abi)
}
}
- let ty_generics = ty_generics_for_fn_or_method(ccx, ast_generics, ty::Generics::empty());
+ let ty_generics = ty_generics_for_fn(ccx, ast_generics, &ty::Generics::empty());
let rb = BindingRscope::new();
let input_tys = decl.inputs
.iter()
- .map(|a| ty_of_arg(ccx, &rb, a, None))
+ .map(|a| ty_of_arg(&ccx.icx(ast_generics), &rb, a, None))
.collect();
let output = match decl.output {
ast::Return(ref ty) =>
- ty::FnConverging(ast_ty_to_ty(ccx, &rb, &**ty)),
+ ty::FnConverging(ast_ty_to_ty(&ccx.icx(ast_generics), &rb, &**ty)),
ast::DefaultReturn(..) =>
ty::FnConverging(ty::mk_nil(ccx.tcx)),
ast::NoReturn(..) =>
}
}
-fn mk_item_substs<'a, 'tcx>(ccx: &CollectCtxt<'a, 'tcx>,
+fn mk_item_substs<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
ty_generics: &ty::Generics<'tcx>)
- -> subst::Substs<'tcx>
+ -> Substs<'tcx>
{
let types =
ty_generics.types.map(
ty_generics.regions.map(
|def| def.to_early_bound_region());
- subst::Substs::new(types, regions)
+ Substs::new(types, regions)
}
/// Verifies that the explicit self type of a method matches the impl
/// comes back to check after the fact that explicit type the user
/// wrote actually matches what the pre-defined option said.
fn check_method_self_type<'a, 'tcx, RS:RegionScope>(
- ccx: &CollectCtxt<'a, 'tcx>,
+ ccx: &CrateCtxt<'a, 'tcx>,
rs: &RS,
+ method_type: Rc<ty::Method<'tcx>>,
required_type: Ty<'tcx>,
explicit_self: &ast::ExplicitSelf,
body_id: ast::NodeId)
{
let tcx = ccx.tcx;
if let ast::SelfExplicit(ref ast_type, _) = explicit_self.node {
- let typ = ccx.to_ty(rs, &**ast_type);
+ let typ = ccx.icx(&method_type.predicates).to_ty(rs, &**ast_type);
let base_type = match typ.sty {
ty::ty_ptr(tm) | ty::ty_rptr(_, tm) => tm.ty,
ty::ty_uniq(typ) => typ,
E0120,
E0121,
E0122,
+ E0123,
E0124,
E0127,
E0128,
tcx.item_substs.borrow_mut().insert(node_id, item_substs);
}
}
-fn lookup_def_tcx(tcx:&ty::ctxt, sp: Span, id: ast::NodeId) -> def::Def {
+
+fn lookup_full_def(tcx: &ty::ctxt, sp: Span, id: ast::NodeId) -> def::Def {
match tcx.def_map.borrow().get(&id) {
- Some(x) => x.clone(),
- _ => {
+ Some(x) => x.full_def(),
+ None => {
span_fatal!(tcx.sess, sp, E0242, "internal error looking up a definition")
}
}
}
-fn lookup_def_ccx(ccx: &CrateCtxt, sp: Span, id: ast::NodeId)
- -> def::Def {
- lookup_def_tcx(ccx.tcx, sp, id)
-}
-
fn require_same_types<'a, 'tcx, M>(tcx: &ty::ctxt<'tcx>,
maybe_infcx: Option<&infer::InferCtxt<'a, 'tcx>>,
t1_is_expected: bool,
//! failure, but rather because the target type `Foo<Y>` is itself just
//! not well-formed. Basically we get to assume well-formedness of all
//! types involved before considering variance.
+//!
+//! ### Associated types
+//!
+//! Any trait with an associated type is invariant with respect to all
+//! of its inputs. To see why this makes sense, consider what
+//! subtyping for a trait reference means:
+//!
+//! <T as Trait> <: <U as Trait>
+//!
+//! means that if I know that `T as Trait`,
+//! I also know that `U as
+//! Trait`. Moreover, if you think of it as
+//! dictionary passing style, it means that
+//! a dictionary for `<T as Trait>` is safe
+//! to use where a dictionary for `<U as
+//! Trait>` is expected.
+//!
+//! The problem is that when you can
+//! project types out from `<T as Trait>`,
+//! the relationship to types projected out
+//! of `<U as Trait>` is completely unknown
+//! unless `T==U` (see #21726 for more
+//! details). Making `Trait` invariant
+//! ensures that this is true.
+//!
+//! *Historical note: we used to preserve this invariant another way,
+//! by tweaking the subtyping rules and requiring that when a type `T`
+//! appeared as part of a projection, that was considered an invariant
+//! location, but this version does away with the need for those
+//! somewhat "special-case-feeling" rules.*
+//!
+//! Another related reason is that if we didn't make traits with
+//! associated types invariant, then projection is no longer a
+//! function with a single result. Consider:
+//!
+//! ```
+//! trait Identity { type Out; fn foo(&self); }
+//! impl<T> Identity for T { type Out = T; ... }
+//! ```
+//!
+//! Now if I have `<&'static () as Identity>::Out`, this can be
+//! validly derived as `&'a ()` for any `'a`:
+//!
+//! <&'a () as Identity> <: <&'static () as Identity>
+//! if &'static () < : &'a () -- Identity is contravariant in Self
+//! if 'static : 'a -- Subtyping rules for relations
+//!
+//! This change otoh means that `<'static () as Identity>::Out` is
+//! always `&'static ()` (which might then be upcast to `'a ()`,
+//! separately). This was helpful in solving #21750.
use self::VarianceTerm::*;
use self::ParamKind::*;
&method.fty.sig,
self.covariant);
}
- ty::TypeTraitItem(_) => {}
+ ty::TypeTraitItem(ref data) => {
+ // Any trait with an associated type is
+ // invariant with respect to all of its
+ // inputs. See length discussion in the comment
+ // on this module.
+ let projection_ty = ty::mk_projection(tcx,
+ trait_def.trait_ref.clone(),
+ data.name);
+ self.add_constraints_from_ty(&trait_def.generics,
+ projection_ty,
+ self.invariant);
+ }
}
}
}
trait_def.generics.types.as_slice(),
trait_def.generics.regions.as_slice(),
trait_ref.substs,
- self.invariant);
+ variance);
}
ty::ty_trait(ref data) => {
None => return None,
};
let def = match tcx.def_map.borrow().get(&id) {
- Some(def) => *def,
+ Some(d) => d.full_def(),
None => return None,
};
let did = def.def_id();
let mut ret = Vec::new();
let did = def.def_id();
let inner = match def {
- def::DefaultImpl(did) => {
+ def::DefTrait(did) => {
record_extern_fqn(cx, did, clean::TypeTrait);
clean::TraitItem(build_external_trait(cx, tcx, did))
}
if method.vis != ast::Public && associated_trait.is_none() {
return None
}
+ if method.provided_source.is_some() {
+ return None
+ }
let mut item = method.clean(cx);
item.inner = match item.inner.clone() {
clean::TyMethodItem(clean::TyMethod {
fn clean(&self, cx: &DocContext) -> TyParam {
cx.external_typarams.borrow_mut().as_mut().unwrap()
.insert(self.def_id, self.name.clean(cx));
- let bounds = self.bounds.clean(cx);
TyParam {
name: self.name.clean(cx),
did: self.def_id,
- bounds: bounds,
+ bounds: vec![], // these are filled in from the where-clauses
default: self.default.clean(cx),
}
}
// Bounds in the type_params and lifetimes fields are repeated in the predicates
// field (see rustc_typeck::collect::ty_generics), so remove them.
let stripped_typarams = gens.types.get_slice(space).iter().map(|tp| {
- let mut stp = tp.clone();
- stp.bounds = ty::ParamBounds::empty();
- stp.clean(cx)
+ tp.clean(cx)
}).collect::<Vec<_>>();
let stripped_lifetimes = gens.regions.get_slice(space).iter().map(|rp| {
let mut srp = rp.clone();
typarams: Option<Vec<TyParamBound>>,
did: ast::DefId,
},
- // I have no idea how to usefully use this.
- TyParamBinder(ast::NodeId),
/// For parameterized types, so the consumer of the JSON don't go
/// looking for types which don't exist anywhere.
Generic(String),
TyFixedLengthVec(ref ty, ref e) => FixedVector(box ty.clean(cx),
e.span.to_src(cx)),
TyTup(ref tys) => Tuple(tys.clean(cx)),
- TyPath(ref p, id) => {
- resolve_type(cx, p.clean(cx), id)
+ TyPath(None, ref p) => {
+ resolve_type(cx, p.clean(cx), self.id)
+ }
+ TyPath(Some(ref qself), ref p) => {
+ let mut trait_path = p.clone();
+ trait_path.segments.pop();
+ Type::QPath {
+ name: p.segments.last().unwrap().identifier.clean(cx),
+ self_type: box qself.ty.clean(cx),
+ trait_: box resolve_type(cx, trait_path.clean(cx), self.id)
+ }
}
TyObjectSum(ref lhs, ref bounds) => {
let lhs_ty = lhs.clean(cx);
}
TyBareFn(ref barefn) => BareFunction(box barefn.clean(cx)),
TyParen(ref ty) => ty.clean(cx),
- TyQPath(ref qp) => qp.clean(cx),
TyPolyTraitRef(ref bounds) => {
PolyTraitRef(bounds.clean(cx))
},
}
}
-impl Clean<Type> for ast::QPath {
- fn clean(&self, cx: &DocContext) -> Type {
- Type::QPath {
- name: self.item_path.identifier.clean(cx),
- self_type: box self.self_type.clean(cx),
- trait_: box self.trait_ref.clean(cx)
- }
- }
-}
-
#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
pub enum StructField {
HiddenStructField, // inserted later by strip passes
};
debug!("searching for {} in defmap", id);
let def = match tcx.def_map.borrow().get(&id) {
- Some(&k) => k,
+ Some(k) => k.full_def(),
None => panic!("unresolved id not in defmap")
};
ast::TyFloat(ast::TyF64) => return Primitive(F64),
},
def::DefTyParam(_, _, _, n) => return Generic(token::get_name(n).to_string()),
- def::DefTyParamBinder(i) => return TyParamBinder(i),
_ => {}
};
let did = register_def(&*cx, def);
def::DefFn(i, _) => (i, TypeFunction),
def::DefTy(i, false) => (i, TypeTypedef),
def::DefTy(i, true) => (i, TypeEnum),
- def::DefaultImpl(i) => (i, TypeTrait),
+ def::DefTrait(i) => (i, TypeTrait),
def::DefStruct(i) => (i, TypeStruct),
def::DefMod(i) => (i, TypeModule),
def::DefStatic(i, _) => (i, TypeStatic),
fn resolve_def(cx: &DocContext, id: ast::NodeId) -> Option<ast::DefId> {
cx.tcx_opt().and_then(|tcx| {
- tcx.def_map.borrow().get(&id).map(|&def| register_def(cx, def))
+ tcx.def_map.borrow().get(&id).map(|d| register_def(cx, d.full_def()))
})
}
// except according to those terms.
pub use self::MaybeTyped::*;
+use rustc_lint;
use rustc_driver::driver;
use rustc::session::{self, config};
use rustc::session::config::UnstableFeatures;
let sess = session::build_session_(sessopts, cpath,
span_diagnostic_handler);
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
let cfg = config::build_configuration(&sess);
impl fmt::Display for clean::Type {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
- clean::TyParamBinder(id) => {
- f.write_str(&cache().typarams[ast_util::local_def(id)])
- }
clean::Generic(ref name) => {
f.write_str(name)
}
extern crate rustc_trans;
extern crate rustc_driver;
extern crate rustc_resolve;
+extern crate rustc_lint;
extern crate serialize;
extern crate syntax;
extern crate "test" as testing;
use std::dynamic_lib::DynamicLibrary;
use std::old_io::{Command, TempDir};
use std::old_io;
-use std::env;
+use std::os;
use std::str;
use std::thread;
use std::thunk::Thunk;
use std::collections::{HashSet, HashMap};
use testing;
+use rustc_lint;
use rustc::session::{self, config};
use rustc::session::config::get_unstable_features_setting;
use rustc::session::search_paths::{SearchPaths, PathKind};
let input = config::Input::File(input_path.clone());
let sessopts = config::Options {
- maybe_sysroot: Some(env::current_exe().unwrap().dir_path().dir_path()),
+ maybe_sysroot: Some(os::self_exe_name().unwrap().dir_path().dir_path()),
search_paths: libs.clone(),
crate_types: vec!(config::CrateTypeDylib),
externs: externs.clone(),
let sess = session::build_session_(sessopts,
Some(input_path.clone()),
span_diagnostic_handler);
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
let mut cfg = config::build_configuration(&sess);
cfg.extend(config::parse_cfgspecs(cfgs).into_iter());
let input = config::Input::Str(test.to_string());
let sessopts = config::Options {
- maybe_sysroot: Some(env::current_exe().unwrap().dir_path().dir_path()),
+ maybe_sysroot: Some(os::self_exe_name().unwrap().dir_path().dir_path()),
search_paths: libs,
crate_types: vec!(config::CrateTypeExecutable),
output_types: vec!(config::OutputTypeExe),
let sess = session::build_session_(sessopts,
None,
span_diagnostic_handler);
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
let outdir = TempDir::new("rustdoctest").ok().expect("rustdoc needs a tempdir");
let out = Some(outdir.path().clone());
Some(tcx) => tcx,
None => return false
};
- let def = (*tcx.def_map.borrow())[id].def_id();
+ let def = tcx.def_map.borrow()[id].def_id();
if !ast_util::is_local(def) { return false }
let analysis = match self.analysis {
Some(analysis) => analysis, None => return false
#[test]
fn test_decode_array() {
let v: Vec<()> = super::decode("[]").unwrap();
- assert_eq!(v, vec![]);
+ assert_eq!(v, []);
let v: Vec<()> = super::decode("[null]").unwrap();
- assert_eq!(v, vec![()]);
+ assert_eq!(v, [()]);
let v: Vec<bool> = super::decode("[true]").unwrap();
- assert_eq!(v, vec![true]);
+ assert_eq!(v, [true]);
let v: Vec<int> = super::decode("[3, 1]").unwrap();
- assert_eq!(v, vec![3, 1]);
+ assert_eq!(v, [3, 1]);
let v: Vec<Vec<uint>> = super::decode("[[3], [1, 2]]").unwrap();
- assert_eq!(v, vec![vec![3], vec![1, 2]]);
+ assert_eq!(v, [vec![3], vec![1, 2]]);
}
#[test]
#[test]
fn test_encode_hashmap_with_arbitrary_key() {
- use std::old_io::Writer;
use std::collections::HashMap;
- use std::fmt;
#[derive(PartialEq, Eq, Hash, RustcEncodable)]
struct ArbitraryType(uint);
let mut hm: HashMap<ArbitraryType, bool> = HashMap::new();
where K: Eq + Hash + Debug, V: Debug, S: HashState
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "HashMap {{"));
+ try!(write!(f, "{{"));
for (i, (k, v)) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
let map_str = format!("{:?}", map);
- assert!(map_str == "HashMap {1: 2, 3: 4}" ||
- map_str == "HashMap {3: 4, 1: 2}");
- assert_eq!(format!("{:?}", empty), "HashMap {}");
+ assert!(map_str == "{1: 2, 3: 4}" ||
+ map_str == "{3: 4, 1: 2}");
+ assert_eq!(format!("{:?}", empty), "{}");
}
#[test]
S: HashState
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- try!(write!(f, "HashSet {{"));
+ try!(write!(f, "{{"));
for (i, x) in self.iter().enumerate() {
if i != 0 { try!(write!(f, ", ")); }
let set_str = format!("{:?}", set);
- assert!(set_str == "HashSet {1, 2}" || set_str == "HashSet {2, 1}");
- assert_eq!(format!("{:?}", empty), "HashSet {}");
+ assert!(set_str == "{1, 2}" || set_str == "{2, 1}");
+ assert_eq!(format!("{:?}", empty), "{}");
}
#[test]
use ops::{Deref, DerefMut, Drop};
use option::Option;
use option::Option::{Some, None};
-use ptr::{self, PtrExt, copy_nonoverlapping_memory, Unique, zero_memory};
+use ptr::{self, PtrExt, Unique};
use rt::heap::{allocate, deallocate, EMPTY};
use collections::hash_state::HashState;
pub fn shift(mut self) -> Option<GapThenFull<K, V, M>> {
unsafe {
*self.gap.raw.hash = mem::replace(&mut *self.full.raw.hash, EMPTY_BUCKET);
- copy_nonoverlapping_memory(self.gap.raw.key, self.full.raw.key, 1);
- copy_nonoverlapping_memory(self.gap.raw.val, self.full.raw.val, 1);
+ ptr::copy_nonoverlapping(self.gap.raw.key, self.full.raw.key, 1);
+ ptr::copy_nonoverlapping(self.gap.raw.val, self.full.raw.val, 1);
}
let FullBucket { raw: prev_raw, idx: prev_idx, .. } = self.full;
pub fn new(capacity: usize) -> RawTable<K, V> {
unsafe {
let ret = RawTable::new_uninitialized(capacity);
- zero_memory(*ret.hashes, capacity);
+ ptr::write_bytes(*ret.hashes, 0, capacity);
ret
}
}
use mem;
use env;
use str;
+use os;
pub struct DynamicLibrary {
handle: *mut u8
/// process
pub fn search_path() -> Vec<Path> {
match env::var_os(DynamicLibrary::envvar()) {
- Some(var) => env::split_paths(&var).collect(),
+ Some(var) => os::split_paths(var.to_str().unwrap()),
None => Vec::new(),
}
}
use error::Error;
use ffi::{OsString, AsOsStr};
use fmt;
-use old_io::IoResult;
+use io;
+use path::{AsPath, PathBuf};
use sync::atomic::{AtomicIsize, ATOMIC_ISIZE_INIT, Ordering};
use sync::{StaticMutex, MUTEX_INIT};
use sys::os as os_imp;
/// let p = env::current_dir().unwrap();
/// println!("The current directory is {}", p.display());
/// ```
-pub fn current_dir() -> IoResult<Path> {
+pub fn current_dir() -> io::Result<PathBuf> {
os_imp::getcwd()
}
///
/// ```rust
/// use std::env;
-/// use std::old_path::Path;
+/// use std::path::Path;
///
/// let root = Path::new("/");
/// assert!(env::set_current_dir(&root).is_ok());
/// println!("Successfully changed working directory to {}!", root.display());
/// ```
-pub fn set_current_dir(p: &Path) -> IoResult<()> {
- os_imp::chdir(p)
+pub fn set_current_dir<P: AsPath + ?Sized>(p: &P) -> io::Result<()> {
+ os_imp::chdir(p.as_path())
}
static ENV_LOCK: StaticMutex = MUTEX_INIT;
}
impl<'a> Iterator for SplitPaths<'a> {
- type Item = Path;
- fn next(&mut self) -> Option<Path> { self.inner.next() }
+ type Item = PathBuf;
+ fn next(&mut self) -> Option<PathBuf> { self.inner.next() }
fn size_hint(&self) -> (usize, Option<usize>) { self.inner.size_hint() }
}
///
/// ```rust
/// use std::env;
+/// use std::path::PathBuf;
///
/// if let Some(path) = env::var_os("PATH") {
/// let mut paths = env::split_paths(&path).collect::<Vec<_>>();
-/// paths.push(Path::new("/home/xyz/bin"));
+/// paths.push(PathBuf::new("/home/xyz/bin"));
/// let new_path = env::join_paths(paths.iter()).unwrap();
/// env::set_var("PATH", &new_path);
/// }
/// None => println!("Impossible to get your home dir!")
/// }
/// ```
-pub fn home_dir() -> Option<Path> {
+pub fn home_dir() -> Option<PathBuf> {
os_imp::home_dir()
}
/// On Windows, returns the value of, in order, the 'TMP', 'TEMP',
/// 'USERPROFILE' environment variable if any are set and not the empty
/// string. Otherwise, tmpdir returns the path to the Windows directory.
-pub fn temp_dir() -> Path {
+pub fn temp_dir() -> PathBuf {
os_imp::temp_dir()
}
/// Err(e) => println!("failed to get current exe path: {}", e),
/// };
/// ```
-pub fn current_exe() -> IoResult<Path> {
+pub fn current_exe() -> io::Result<PathBuf> {
os_imp::current_exe()
}
use iter::repeat;
use rand::{self, Rng};
use ffi::{OsString, OsStr};
+ use path::PathBuf;
fn make_rand_name() -> OsString {
let mut rng = rand::thread_rng();
fn split_paths_windows() {
fn check_parse(unparsed: &str, parsed: &[&str]) -> bool {
split_paths(unparsed).collect::<Vec<_>>() ==
- parsed.iter().map(|s| Path::new(*s)).collect::<Vec<_>>()
+ parsed.iter().map(|s| PathBuf::new(*s)).collect::<Vec<_>>()
}
assert!(check_parse("", &mut [""]));
fn split_paths_unix() {
fn check_parse(unparsed: &str, parsed: &[&str]) -> bool {
split_paths(unparsed).collect::<Vec<_>>() ==
- parsed.iter().map(|s| Path::new(*s)).collect::<Vec<_>>()
+ parsed.iter().map(|s| PathBuf::new(*s)).collect::<Vec<_>>()
}
assert!(check_parse("", &mut [""]));
+++ /dev/null
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Filesystem manipulation operations
-//!
-//! This module contains basic methods to manipulate the contents of the local
-//! filesystem. All methods in this module represent cross-platform filesystem
-//! operations. Extra platform-specific functionality can be found in the
-//! extension traits of `std::os::$platform`.
-
-#![unstable(feature = "fs")]
-
-use core::prelude::*;
-
-use io::{self, Error, ErrorKind, SeekFrom, Seek, Read, Write};
-use path::{AsPath, Path, PathBuf};
-use sys::fs2 as fs_imp;
-use sys_common::{AsInnerMut, FromInner, AsInner};
-use vec::Vec;
-
-/// A reference to an open file on the filesystem.
-///
-/// An instance of a `File` can be read and/or written depending on what options
-/// it was opened with. Files also implement `Seek` to alter the logical cursor
-/// that the file contains internally.
-///
-/// # Example
-///
-/// ```no_run
-/// use std::io::prelude::*;
-/// use std::fs::File;
-///
-/// # fn foo() -> std::io::Result<()> {
-/// let mut f = try!(File::create("foo.txt"));
-/// try!(f.write_all(b"Hello, world!"));
-///
-/// let mut f = try!(File::open("foo.txt"));
-/// let mut s = String::new();
-/// try!(f.read_to_string(&mut s));
-/// assert_eq!(s, "Hello, world!");
-/// # Ok(())
-/// # }
-/// ```
-pub struct File {
- inner: fs_imp::File,
- path: PathBuf,
-}
-
-/// Metadata information about a file.
-///
-/// This structure is returned from the `metadata` function or method and
-/// represents known metadata about a file such as its permissions, size,
-/// modification times, etc.
-pub struct Metadata(fs_imp::FileAttr);
-
-/// Iterator over the entries in a directory.
-///
-/// This iterator is returned from the `read_dir` function of this module and
-/// will yield instances of `io::Result<DirEntry>`. Through a `DirEntry`
-/// information like the entry's path and possibly other metadata can be
-/// learned.
-pub struct ReadDir(fs_imp::ReadDir);
-
-/// Entries returned by the `ReadDir` iterator.
-///
-/// An instance of `DirEntry` represents an entry inside of a directory on the
-/// filesystem. Each entry can be inspected via methods to learn about the full
-/// path or possibly other metadata through per-platform extension traits.
-pub struct DirEntry(fs_imp::DirEntry);
-
-/// An iterator that recursively walks over the contents of a directory.
-pub struct WalkDir {
- cur: Option<ReadDir>,
- stack: Vec<io::Result<ReadDir>>,
-}
-
-/// Options and flags which can be used to configure how a file is opened.
-///
-/// This builder exposes the ability to configure how a `File` is opened and
-/// what operations are permitted on the open file. The `File::open` and
-/// `File::create` methods are aliases for commonly used options using this
-/// builder.
-#[derive(Clone)]
-pub struct OpenOptions(fs_imp::OpenOptions);
-
-/// Representation of the various permissions on a file.
-///
-/// This module only currently provides one bit of information, `readonly`,
-/// which is exposed on all currently supported platforms. Unix-specific
-/// functionality, such as mode bits, is available through the
-/// `os::unix::PermissionsExt` trait.
-#[derive(Clone, PartialEq, Eq, Debug)]
-pub struct Permissions(fs_imp::FilePermissions);
-
-impl File {
- /// Attempts to open a file in read-only mode.
- ///
- /// See the `OpenOptions::open` method for more details.
- ///
- /// # Errors
- ///
- /// This function will return an error if `path` does not already exist.
- /// Other errors may also be returned according to `OpenOptions::open`.
- pub fn open<P: AsPath + ?Sized>(path: &P) -> io::Result<File> {
- OpenOptions::new().read(true).open(path)
- }
-
- /// Open a file in write-only mode.
- ///
- /// This function will create a file if it does not exist,
- /// and will truncate it if it does.
- ///
- /// See the `OpenOptions::open` function for more details.
- pub fn create<P: AsPath + ?Sized>(path: &P) -> io::Result<File> {
- OpenOptions::new().write(true).create(true).truncate(true).open(path)
- }
-
- /// Returns the original path that was used to open this file.
- pub fn path(&self) -> Option<&Path> {
- Some(&self.path)
- }
-
- /// Attempt to sync all OS-internal metadata to disk.
- ///
- /// This function will attempt to ensure that all in-core data reaches the
- /// filesystem before returning.
- pub fn sync_all(&self) -> io::Result<()> {
- self.inner.fsync()
- }
-
- /// This function is similar to `sync_all`, except that it may not
- /// synchronize file metadata to the filesystem.
- ///
- /// This is intended for use cases that must synchronize content, but don't
- /// need the metadata on disk. The goal of this method is to reduce disk
- /// operations.
- ///
- /// Note that some platforms may simply implement this in terms of
- /// `sync_all`.
- pub fn sync_data(&self) -> io::Result<()> {
- self.inner.datasync()
- }
-
- /// Truncates or extends the underlying file, updating the size of
- /// this file to become `size`.
- ///
- /// If the `size` is less than the current file's size, then the file will
- /// be shrunk. If it is greater than the current file's size, then the file
- /// will be extended to `size` and have all of the intermediate data filled
- /// in with 0s.
- pub fn set_len(&self, size: u64) -> io::Result<()> {
- self.inner.truncate(size)
- }
-
- /// Queries information about the underlying file.
- pub fn metadata(&self) -> io::Result<Metadata> {
- self.inner.file_attr().map(Metadata)
- }
-}
-
-impl AsInner<fs_imp::File> for File {
- fn as_inner(&self) -> &fs_imp::File { &self.inner }
-}
-impl Read for File {
- fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
- self.inner.read(buf)
- }
-}
-impl Write for File {
- fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
- self.inner.write(buf)
- }
- fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
-}
-impl Seek for File {
- fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
- self.inner.seek(pos)
- }
-}
-impl<'a> Read for &'a File {
- fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
- self.inner.read(buf)
- }
-}
-impl<'a> Write for &'a File {
- fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
- self.inner.write(buf)
- }
- fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
-}
-impl<'a> Seek for &'a File {
- fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
- self.inner.seek(pos)
- }
-}
-
-impl OpenOptions {
- /// Creates a blank net set of options ready for configuration.
- ///
- /// All options are initially set to `false`.
- pub fn new() -> OpenOptions {
- OpenOptions(fs_imp::OpenOptions::new())
- }
-
- /// Set the option for read access.
- ///
- /// This option, when true, will indicate that the file should be
- /// `read`-able if opened.
- pub fn read(&mut self, read: bool) -> &mut OpenOptions {
- self.0.read(read); self
- }
-
- /// Set the option for write access.
- ///
- /// This option, when true, will indicate that the file should be
- /// `write`-able if opened.
- pub fn write(&mut self, write: bool) -> &mut OpenOptions {
- self.0.write(write); self
- }
-
- /// Set the option for the append mode.
- ///
- /// This option, when true, means that writes will append to a file instead
- /// of overwriting previous contents.
- pub fn append(&mut self, append: bool) -> &mut OpenOptions {
- self.0.append(append); self
- }
-
- /// Set the option for truncating a previous file.
- ///
- /// If a file is successfully opened with this option set it will truncate
- /// the file to 0 length if it already exists.
- pub fn truncate(&mut self, truncate: bool) -> &mut OpenOptions {
- self.0.truncate(truncate); self
- }
-
- /// Set the option for creating a new file.
- ///
- /// This option indicates whether a new file will be created if the file
- /// does not yet already exist.
- pub fn create(&mut self, create: bool) -> &mut OpenOptions {
- self.0.create(create); self
- }
-
- /// Open a file at `path` with the options specified by `self`.
- ///
- /// # Errors
- ///
- /// This function will return an error under a number of different
- /// circumstances, to include but not limited to:
- ///
- /// * Opening a file that does not exist with read access.
- /// * Attempting to open a file with access that the user lacks
- /// permissions for
- /// * Filesystem-level errors (full disk, etc)
- pub fn open<P: AsPath + ?Sized>(&self, path: &P) -> io::Result<File> {
- let path = path.as_path();
- let inner = try!(fs_imp::File::open(path, &self.0));
-
- // On *BSD systems, we can open a directory as a file and read from
- // it: fd=open("/tmp", O_RDONLY); read(fd, buf, N); due to an old
- // tradition before the introduction of opendir(3). We explicitly
- // reject it because there are few use cases.
- if cfg!(not(any(target_os = "linux", target_os = "android"))) &&
- try!(inner.file_attr()).is_dir() {
- Err(Error::new(ErrorKind::InvalidInput, "is a directory", None))
- } else {
- Ok(File { path: path.to_path_buf(), inner: inner })
- }
- }
-}
-impl AsInnerMut<fs_imp::OpenOptions> for OpenOptions {
- fn as_inner_mut(&mut self) -> &mut fs_imp::OpenOptions { &mut self.0 }
-}
-
-impl Metadata {
- /// Returns whether this metadata is for a directory.
- pub fn is_dir(&self) -> bool { self.0.is_dir() }
-
- /// Returns whether this metadata is for a regular file.
- pub fn is_file(&self) -> bool { self.0.is_file() }
-
- /// Returns the size of the file, in bytes, this metadata is for.
- pub fn len(&self) -> u64 { self.0.size() }
-
- /// Returns the permissions of the file this metadata is for.
- pub fn permissions(&self) -> Permissions {
- Permissions(self.0.perm())
- }
-
- /// Returns the most recent access time for a file.
- ///
- /// The return value is in milliseconds since the epoch.
- pub fn accessed(&self) -> u64 { self.0.accessed() }
-
- /// Returns the most recent modification time for a file.
- ///
- /// The return value is in milliseconds since the epoch.
- pub fn modified(&self) -> u64 { self.0.modified() }
-}
-
-impl Permissions {
- /// Returns whether these permissions describe a readonly file.
- pub fn readonly(&self) -> bool { self.0.readonly() }
-
- /// Modify the readonly flag for this set of permissions.
- ///
- /// This operation does **not** modify the filesystem. To modify the
- /// filesystem use the `fs::set_permissions` function.
- pub fn set_readonly(&mut self, readonly: bool) {
- self.0.set_readonly(readonly)
- }
-}
-
-impl FromInner<fs_imp::FilePermissions> for Permissions {
- fn from_inner(f: fs_imp::FilePermissions) -> Permissions {
- Permissions(f)
- }
-}
-
-impl Iterator for ReadDir {
- type Item = io::Result<DirEntry>;
-
- fn next(&mut self) -> Option<io::Result<DirEntry>> {
- self.0.next().map(|entry| entry.map(DirEntry))
- }
-}
-
-impl DirEntry {
- /// Returns the full path to the file that this entry represents.
- ///
- /// The full path is created by joining the original path to `read_dir` or
- /// `walk_dir` with the filename of this entry.
- pub fn path(&self) -> PathBuf { self.0.path() }
-}
-
-/// Remove a file from the underlying filesystem.
-///
-/// # Example
-///
-/// ```rust,no_run
-/// use std::fs;
-///
-/// fs::remove_file("/some/file/path.txt");
-/// ```
-///
-/// Note that, just because an unlink call was successful, it is not
-/// guaranteed that a file is immediately deleted (e.g. depending on
-/// platform, other open file descriptors may prevent immediate removal).
-///
-/// # Errors
-///
-/// This function will return an error if `path` points to a directory, if the
-/// user lacks permissions to remove the file, or if some other filesystem-level
-/// error occurs.
-pub fn remove_file<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
- let path = path.as_path();
- let e = match fs_imp::unlink(path) {
- Ok(()) => return Ok(()),
- Err(e) => e,
- };
- if !cfg!(windows) { return Err(e) }
-
- // On unix, a readonly file can be successfully removed. On windows,
- // however, it cannot. To keep the two platforms in line with
- // respect to their behavior, catch this case on windows, attempt to
- // change it to read-write, and then remove the file.
- if e.kind() != ErrorKind::PermissionDenied { return Err(e) }
-
- let attr = match metadata(path) { Ok(a) => a, Err(..) => return Err(e) };
- let mut perms = attr.permissions();
- if !perms.readonly() { return Err(e) }
- perms.set_readonly(false);
-
- if set_permissions(path, perms).is_err() { return Err(e) }
- if fs_imp::unlink(path).is_ok() { return Ok(()) }
-
- // Oops, try to put things back the way we found it
- let _ = set_permissions(path, attr.permissions());
- Err(e)
-}
-
-/// Given a path, query the file system to get information about a file,
-/// directory, etc.
-///
-/// This function will traverse soft links to query information about the
-/// destination file.
-///
-/// # Example
-///
-/// ```rust,no_run
-/// # fn foo() -> std::io::Result<()> {
-/// use std::fs;
-///
-/// let attr = try!(fs::metadata("/some/file/path.txt"));
-/// // inspect attr ...
-/// # Ok(())
-/// # }
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error if the user lacks the requisite
-/// permissions to perform a `metadata` call on the given `path` or if there
-/// is no entry in the filesystem at the provided path.
-pub fn metadata<P: AsPath + ?Sized>(path: &P) -> io::Result<Metadata> {
- fs_imp::stat(path.as_path()).map(Metadata)
-}
-
-/// Rename a file or directory to a new name.
-///
-/// # Example
-///
-/// ```rust,no_run
-/// use std::fs;
-///
-/// fs::rename("foo", "bar");
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error if the provided `from` doesn't exist, if
-/// the process lacks permissions to view the contents, if `from` and `to`
-/// reside on separate filesystems, or if some other intermittent I/O error
-/// occurs.
-pub fn rename<P: AsPath + ?Sized, Q: AsPath + ?Sized>(from: &P, to: &Q)
- -> io::Result<()> {
- fs_imp::rename(from.as_path(), to.as_path())
-}
-
-/// Copies the contents of one file to another. This function will also
-/// copy the permission bits of the original file to the destination file.
-///
-/// This function will **overwrite** the contents of `to`.
-///
-/// Note that if `from` and `to` both point to the same file, then the file
-/// will likely get truncated by this operation.
-///
-/// # Example
-///
-/// ```rust
-/// use std::fs;
-///
-/// fs::copy("foo.txt", "bar.txt");
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error in the following situations, but is not
-/// limited to just these cases:
-///
-/// * The `from` path is not a file
-/// * The `from` file does not exist
-/// * The current process does not have the permission rights to access
-/// `from` or write `to`
-pub fn copy<P: AsPath + ?Sized, Q: AsPath + ?Sized>(from: &P, to: &Q)
- -> io::Result<u64> {
- let from = from.as_path();
- if !from.is_file() {
- return Err(Error::new(ErrorKind::MismatchedFileTypeForOperation,
- "the source path is not an existing file",
- None))
- }
-
- let mut reader = try!(File::open(from));
- let mut writer = try!(File::create(to));
- let perm = try!(reader.metadata()).permissions();
-
- let ret = try!(io::copy(&mut reader, &mut writer));
- try!(set_permissions(to, perm));
- Ok(ret)
-}
-
-/// Creates a new hard link on the filesystem.
-///
-/// The `dst` path will be a link pointing to the `src` path. Note that systems
-/// often require these two paths to both be located on the same filesystem.
-pub fn hard_link<P: AsPath + ?Sized, Q: AsPath + ?Sized>(src: &P, dst: &Q)
- -> io::Result<()> {
- fs_imp::link(src.as_path(), dst.as_path())
-}
-
-/// Creates a new soft link on the filesystem.
-///
-/// The `dst` path will be a soft link pointing to the `src` path.
-pub fn soft_link<P: AsPath + ?Sized, Q: AsPath + ?Sized>(src: &P, dst: &Q)
- -> io::Result<()> {
- fs_imp::symlink(src.as_path(), dst.as_path())
-}
-
-/// Reads a soft link, returning the file that the link points to.
-///
-/// # Errors
-///
-/// This function will return an error on failure. Failure conditions include
-/// reading a file that does not exist or reading a file that is not a soft
-/// link.
-pub fn read_link<P: AsPath + ?Sized>(path: &P) -> io::Result<PathBuf> {
- fs_imp::readlink(path.as_path())
-}
-
-/// Create a new, empty directory at the provided path
-///
-/// # Example
-///
-/// ```rust
-/// use std::fs;
-///
-/// fs::create_dir("/some/dir");
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error if the user lacks permissions to make a
-/// new directory at the provided `path`, or if the directory already exists.
-pub fn create_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
- fs_imp::mkdir(path.as_path())
-}
-
-/// Recursively create a directory and all of its parent components if they
-/// are missing.
-///
-/// # Errors
-///
-/// This function will fail if any directory in the path specified by `path`
-/// does not already exist and it could not be created otherwise. The specific
-/// error conditions for when a directory is being created (after it is
-/// determined to not exist) are outlined by `fs::create_dir`.
-pub fn create_dir_all<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
- let path = path.as_path();
- if path.is_dir() { return Ok(()) }
- match path.parent() {
- Some(p) if p != path => try!(create_dir_all(p)),
- _ => {}
- }
- create_dir(path)
-}
-
-/// Remove an existing, empty directory
-///
-/// # Example
-///
-/// ```rust
-/// use std::fs;
-///
-/// fs::remove_dir("/some/dir");
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error if the user lacks permissions to remove
-/// the directory at the provided `path`, or if the directory isn't empty.
-pub fn remove_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
- fs_imp::rmdir(path.as_path())
-}
-
-/// Removes a directory at this path, after removing all its contents. Use
-/// carefully!
-///
-/// This function does **not** follow soft links and it will simply remove the
-/// soft link itself.
-///
-/// # Errors
-///
-/// See `file::remove_file` and `fs::remove_dir`
-pub fn remove_dir_all<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
- let path = path.as_path();
- for child in try!(read_dir(path)) {
- let child = try!(child).path();
- let stat = try!(lstat(&*child));
- if stat.is_dir() {
- try!(remove_dir_all(&*child));
- } else {
- try!(remove_file(&*child));
- }
- }
- return remove_dir(path);
-
- #[cfg(unix)]
- fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::lstat(path) }
- #[cfg(windows)]
- fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::stat(path) }
-}
-
-/// Returns an iterator over the entries within a directory.
-///
-/// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
-/// be encountered after an iterator is initially constructed.
-///
-/// # Example
-///
-/// ```rust
-/// use std::io;
-/// use std::fs::{self, PathExt, DirEntry};
-/// use std::path::Path;
-///
-/// // one possible implementation of fs::walk_dir only visiting files
-/// fn visit_dirs(dir: &Path, cb: &mut FnMut(DirEntry)) -> io::Result<()> {
-/// if dir.is_dir() {
-/// for entry in try!(fs::read_dir(dir)) {
-/// let entry = try!(entry);
-/// if entry.path().is_dir() {
-/// try!(visit_dirs(&entry.path(), cb));
-/// } else {
-/// cb(entry);
-/// }
-/// }
-/// }
-/// Ok(())
-/// }
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error if the provided `path` doesn't exist, if
-/// the process lacks permissions to view the contents or if the `path` points
-/// at a non-directory file
-pub fn read_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<ReadDir> {
- fs_imp::readdir(path.as_path()).map(ReadDir)
-}
-
-/// Returns an iterator that will recursively walk the directory structure
-/// rooted at `path`.
-///
-/// The path given will not be iterated over, and this will perform iteration in
-/// some top-down order. The contents of unreadable subdirectories are ignored.
-///
-/// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
-/// be encountered after an iterator is initially constructed.
-pub fn walk_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<WalkDir> {
- let start = try!(read_dir(path));
- Ok(WalkDir { cur: Some(start), stack: Vec::new() })
-}
-
-impl Iterator for WalkDir {
- type Item = io::Result<DirEntry>;
-
- fn next(&mut self) -> Option<io::Result<DirEntry>> {
- loop {
- if let Some(ref mut cur) = self.cur {
- match cur.next() {
- Some(Err(e)) => return Some(Err(e)),
- Some(Ok(next)) => {
- let path = next.path();
- if path.is_dir() {
- self.stack.push(read_dir(&*path));
- }
- return Some(Ok(next))
- }
- None => {}
- }
- }
- self.cur = None;
- match self.stack.pop() {
- Some(Err(e)) => return Some(Err(e)),
- Some(Ok(next)) => self.cur = Some(next),
- None => return None,
- }
- }
- }
-}
-
-/// Utility methods for paths.
-pub trait PathExt {
- /// Get information on the file, directory, etc at this path.
- ///
- /// Consult the `fs::stat` documentation for more info.
- ///
- /// This call preserves identical runtime/error semantics with `file::stat`.
- fn metadata(&self) -> io::Result<Metadata>;
-
- /// Boolean value indicator whether the underlying file exists on the local
- /// filesystem. Returns false in exactly the cases where `fs::stat` fails.
- fn exists(&self) -> bool;
-
- /// Whether the underlying implementation (be it a file path, or something
- /// else) points at a "regular file" on the FS. Will return false for paths
- /// to non-existent locations or directories or other non-regular files
- /// (named pipes, etc). Follows links when making this determination.
- fn is_file(&self) -> bool;
-
- /// Whether the underlying implementation (be it a file path, or something
- /// else) is pointing at a directory in the underlying FS. Will return
- /// false for paths to non-existent locations or if the item is not a
- /// directory (eg files, named pipes, etc). Follows links when making this
- /// determination.
- fn is_dir(&self) -> bool;
-}
-
-impl PathExt for Path {
- fn metadata(&self) -> io::Result<Metadata> { metadata(self) }
-
- fn exists(&self) -> bool { metadata(self).is_ok() }
-
- fn is_file(&self) -> bool {
- metadata(self).map(|s| s.is_file()).unwrap_or(false)
- }
- fn is_dir(&self) -> bool {
- metadata(self).map(|s| s.is_dir()).unwrap_or(false)
- }
-}
-
-/// Changes the timestamps for a file's last modification and access time.
-///
-/// The file at the path specified will have its last access time set to
-/// `atime` and its modification time set to `mtime`. The times specified should
-/// be in milliseconds.
-pub fn set_file_times<P: AsPath + ?Sized>(path: &P, accessed: u64,
- modified: u64) -> io::Result<()> {
- fs_imp::utimes(path.as_path(), accessed, modified)
-}
-
-/// Changes the permissions found on a file or a directory.
-///
-/// # Example
-///
-/// ```
-/// # fn foo() -> std::io::Result<()> {
-/// use std::fs;
-///
-/// let mut perms = try!(fs::metadata("foo.txt")).permissions();
-/// perms.set_readonly(true);
-/// try!(fs::set_permissions("foo.txt", perms));
-/// # Ok(())
-/// # }
-/// ```
-///
-/// # Errors
-///
-/// This function will return an error if the provided `path` doesn't exist, if
-/// the process lacks permissions to change the attributes of the file, or if
-/// some other I/O error is encountered.
-pub fn set_permissions<P: AsPath + ?Sized>(path: &P, perm: Permissions)
- -> io::Result<()> {
- fs_imp::set_perm(path.as_path(), perm.0)
-}
-
-#[cfg(test)]
-mod tests {
- #![allow(deprecated)] //rand
-
- use prelude::v1::*;
- use io::prelude::*;
-
- use fs::{self, File, OpenOptions};
- use io::{ErrorKind, SeekFrom};
- use path::PathBuf;
- use path::Path as Path2;
- use os;
- use rand::{self, StdRng, Rng};
- use str;
-
- macro_rules! check { ($e:expr) => (
- match $e {
- Ok(t) => t,
- Err(e) => panic!("{} failed with: {}", stringify!($e), e),
- }
- ) }
-
- macro_rules! error { ($e:expr, $s:expr) => (
- match $e {
- Ok(_) => panic!("Unexpected success. Should've been: {:?}", $s),
- Err(ref err) => assert!(err.to_string().contains($s.as_slice()),
- format!("`{}` did not contain `{}`", err, $s))
- }
- ) }
-
- pub struct TempDir(PathBuf);
-
- impl TempDir {
- fn join(&self, path: &str) -> PathBuf {
- let TempDir(ref p) = *self;
- p.join(path)
- }
-
- fn path<'a>(&'a self) -> &'a Path2 {
- let TempDir(ref p) = *self;
- p
- }
- }
-
- impl Drop for TempDir {
- fn drop(&mut self) {
- // Gee, seeing how we're testing the fs module I sure hope that we
- // at least implement this correctly!
- let TempDir(ref p) = *self;
- check!(fs::remove_dir_all(p));
- }
- }
-
- pub fn tmpdir() -> TempDir {
- let s = os::tmpdir();
- let p = Path2::new(s.as_str().unwrap());
- let ret = p.join(&format!("rust-{}", rand::random::<u32>()));
- check!(fs::create_dir(&ret));
- TempDir(ret)
- }
-
- #[test]
- fn file_test_io_smoke_test() {
- let message = "it's alright. have a good time";
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_rt_io_file_test.txt");
- {
- let mut write_stream = check!(File::create(filename));
- check!(write_stream.write(message.as_bytes()));
- }
- {
- let mut read_stream = check!(File::open(filename));
- let mut read_buf = [0; 1028];
- let read_str = match check!(read_stream.read(&mut read_buf)) {
- -1|0 => panic!("shouldn't happen"),
- n => str::from_utf8(&read_buf[..n]).unwrap().to_string()
- };
- assert_eq!(read_str.as_slice(), message);
- }
- check!(fs::remove_file(filename));
- }
-
- #[test]
- fn invalid_path_raises() {
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_that_does_not_exist.txt");
- let result = File::open(filename);
-
- if cfg!(unix) {
- error!(result, "o such file or directory");
- }
- // error!(result, "couldn't open path as file");
- // error!(result, format!("path={}; mode=open; access=read", filename.display()));
- }
-
- #[test]
- fn file_test_iounlinking_invalid_path_should_raise_condition() {
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_another_file_that_does_not_exist.txt");
-
- let result = fs::remove_file(filename);
-
- if cfg!(unix) {
- error!(result, "o such file or directory");
- }
- // error!(result, "couldn't unlink path");
- // error!(result, format!("path={}", filename.display()));
- }
-
- #[test]
- fn file_test_io_non_positional_read() {
- let message: &str = "ten-four";
- let mut read_mem = [0; 8];
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_rt_io_file_test_positional.txt");
- {
- let mut rw_stream = check!(File::create(filename));
- check!(rw_stream.write(message.as_bytes()));
- }
- {
- let mut read_stream = check!(File::open(filename));
- {
- let read_buf = &mut read_mem[0..4];
- check!(read_stream.read(read_buf));
- }
- {
- let read_buf = &mut read_mem[4..8];
- check!(read_stream.read(read_buf));
- }
- }
- check!(fs::remove_file(filename));
- let read_str = str::from_utf8(&read_mem).unwrap();
- assert_eq!(read_str, message);
- }
-
- #[test]
- fn file_test_io_seek_and_tell_smoke_test() {
- let message = "ten-four";
- let mut read_mem = [0; 4];
- let set_cursor = 4 as u64;
- let mut tell_pos_pre_read;
- let mut tell_pos_post_read;
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_rt_io_file_test_seeking.txt");
- {
- let mut rw_stream = check!(File::create(filename));
- check!(rw_stream.write(message.as_bytes()));
- }
- {
- let mut read_stream = check!(File::open(filename));
- check!(read_stream.seek(SeekFrom::Start(set_cursor)));
- tell_pos_pre_read = check!(read_stream.seek(SeekFrom::Current(0)));
- check!(read_stream.read(&mut read_mem));
- tell_pos_post_read = check!(read_stream.seek(SeekFrom::Current(0)));
- }
- check!(fs::remove_file(filename));
- let read_str = str::from_utf8(&read_mem).unwrap();
- assert_eq!(read_str, &message[4..8]);
- assert_eq!(tell_pos_pre_read, set_cursor);
- assert_eq!(tell_pos_post_read, message.len() as u64);
- }
-
- #[test]
- fn file_test_io_seek_and_write() {
- let initial_msg = "food-is-yummy";
- let overwrite_msg = "-the-bar!!";
- let final_msg = "foo-the-bar!!";
- let seek_idx = 3;
- let mut read_mem = [0; 13];
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_rt_io_file_test_seek_and_write.txt");
- {
- let mut rw_stream = check!(File::create(filename));
- check!(rw_stream.write(initial_msg.as_bytes()));
- check!(rw_stream.seek(SeekFrom::Start(seek_idx)));
- check!(rw_stream.write(overwrite_msg.as_bytes()));
- }
- {
- let mut read_stream = check!(File::open(filename));
- check!(read_stream.read(&mut read_mem));
- }
- check!(fs::remove_file(filename));
- let read_str = str::from_utf8(&read_mem).unwrap();
- assert!(read_str == final_msg);
- }
-
- #[test]
- fn file_test_io_seek_shakedown() {
- // 01234567890123
- let initial_msg = "qwer-asdf-zxcv";
- let chunk_one: &str = "qwer";
- let chunk_two: &str = "asdf";
- let chunk_three: &str = "zxcv";
- let mut read_mem = [0; 4];
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_rt_io_file_test_seek_shakedown.txt");
- {
- let mut rw_stream = check!(File::create(filename));
- check!(rw_stream.write(initial_msg.as_bytes()));
- }
- {
- let mut read_stream = check!(File::open(filename));
-
- check!(read_stream.seek(SeekFrom::End(-4)));
- check!(read_stream.read(&mut read_mem));
- assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_three);
-
- check!(read_stream.seek(SeekFrom::Current(-9)));
- check!(read_stream.read(&mut read_mem));
- assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_two);
-
- check!(read_stream.seek(SeekFrom::Start(0)));
- check!(read_stream.read(&mut read_mem));
- assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_one);
- }
- check!(fs::remove_file(filename));
- }
-
- #[test]
- fn file_test_stat_is_correct_on_is_file() {
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_stat_correct_on_is_file.txt");
- {
- let mut opts = OpenOptions::new();
- let mut fs = check!(opts.read(true).write(true)
- .create(true).open(filename));
- let msg = "hw";
- fs.write(msg.as_bytes()).unwrap();
-
- let fstat_res = check!(fs.metadata());
- assert!(fstat_res.is_file());
- }
- let stat_res_fn = check!(fs::metadata(filename));
- assert!(stat_res_fn.is_file());
- let stat_res_meth = check!(filename.metadata());
- assert!(stat_res_meth.is_file());
- check!(fs::remove_file(filename));
- }
-
- #[test]
- fn file_test_stat_is_correct_on_is_dir() {
- let tmpdir = tmpdir();
- let filename = &tmpdir.join("file_stat_correct_on_is_dir");
- check!(fs::create_dir(filename));
- let stat_res_fn = check!(fs::metadata(filename));
- assert!(stat_res_fn.is_dir());
- let stat_res_meth = check!(filename.metadata());
- assert!(stat_res_meth.is_dir());
- check!(fs::remove_dir(filename));
- }
-
- #[test]
- fn file_test_fileinfo_false_when_checking_is_file_on_a_directory() {
- let tmpdir = tmpdir();
- let dir = &tmpdir.join("fileinfo_false_on_dir");
- check!(fs::create_dir(dir));
- assert!(dir.is_file() == false);
- check!(fs::remove_dir(dir));
- }
-
- #[test]
- fn file_test_fileinfo_check_exists_before_and_after_file_creation() {
- let tmpdir = tmpdir();
- let file = &tmpdir.join("fileinfo_check_exists_b_and_a.txt");
- check!(check!(File::create(file)).write(b"foo"));
- assert!(file.exists());
- check!(fs::remove_file(file));
- assert!(!file.exists());
- }
-
- #[test]
- fn file_test_directoryinfo_check_exists_before_and_after_mkdir() {
- let tmpdir = tmpdir();
- let dir = &tmpdir.join("before_and_after_dir");
- assert!(!dir.exists());
- check!(fs::create_dir(dir));
- assert!(dir.exists());
- assert!(dir.is_dir());
- check!(fs::remove_dir(dir));
- assert!(!dir.exists());
- }
-
- #[test]
- fn file_test_directoryinfo_readdir() {
- let tmpdir = tmpdir();
- let dir = &tmpdir.join("di_readdir");
- check!(fs::create_dir(dir));
- let prefix = "foo";
- for n in range(0, 3) {
- let f = dir.join(&format!("{}.txt", n));
- let mut w = check!(File::create(&f));
- let msg_str = format!("{}{}", prefix, n.to_string());
- let msg = msg_str.as_bytes();
- check!(w.write(msg));
- }
- let files = check!(fs::read_dir(dir));
- let mut mem = [0u8; 4];
- for f in files {
- let f = f.unwrap().path();
- {
- let n = f.file_stem().unwrap();
- check!(check!(File::open(&f)).read(&mut mem));
- let read_str = str::from_utf8(&mem).unwrap();
- let expected = format!("{}{}", prefix, n.to_str().unwrap());
- assert_eq!(expected.as_slice(), read_str);
- }
- check!(fs::remove_file(&f));
- }
- check!(fs::remove_dir(dir));
- }
-
- #[test]
- fn file_test_walk_dir() {
- let tmpdir = tmpdir();
- let dir = &tmpdir.join("walk_dir");
- check!(fs::create_dir(dir));
-
- let dir1 = &dir.join("01/02/03");
- check!(fs::create_dir_all(dir1));
- check!(File::create(&dir1.join("04")));
-
- let dir2 = &dir.join("11/12/13");
- check!(fs::create_dir_all(dir2));
- check!(File::create(&dir2.join("14")));
-
- let files = check!(fs::walk_dir(dir));
- let mut cur = [0u8; 2];
- for f in files {
- let f = f.unwrap().path();
- let stem = f.file_stem().unwrap().to_str().unwrap();
- let root = stem.as_bytes()[0] - b'0';
- let name = stem.as_bytes()[1] - b'0';
- assert!(cur[root as usize] < name);
- cur[root as usize] = name;
- }
-
- check!(fs::remove_dir_all(dir));
- }
-
- #[test]
- fn mkdir_path_already_exists_error() {
- let tmpdir = tmpdir();
- let dir = &tmpdir.join("mkdir_error_twice");
- check!(fs::create_dir(dir));
- let e = fs::create_dir(dir).err().unwrap();
- assert_eq!(e.kind(), ErrorKind::PathAlreadyExists);
- }
-
- #[test]
- fn recursive_mkdir() {
- let tmpdir = tmpdir();
- let dir = tmpdir.join("d1/d2");
- check!(fs::create_dir_all(&dir));
- assert!(dir.is_dir())
- }
-
- #[test]
- fn recursive_mkdir_failure() {
- let tmpdir = tmpdir();
- let dir = tmpdir.join("d1");
- let file = dir.join("f1");
-
- check!(fs::create_dir_all(&dir));
- check!(File::create(&file));
-
- let result = fs::create_dir_all(&file);
-
- assert!(result.is_err());
- // error!(result, "couldn't recursively mkdir");
- // error!(result, "couldn't create directory");
- // error!(result, "mode=0700");
- // error!(result, format!("path={}", file.display()));
- }
-
- #[test]
- fn recursive_mkdir_slash() {
- check!(fs::create_dir_all(&Path2::new("/")));
- }
-
- // FIXME(#12795) depends on lstat to work on windows
- #[cfg(not(windows))]
- #[test]
- fn recursive_rmdir() {
- let tmpdir = tmpdir();
- let d1 = tmpdir.join("d1");
- let dt = d1.join("t");
- let dtt = dt.join("t");
- let d2 = tmpdir.join("d2");
- let canary = d2.join("do_not_delete");
- check!(fs::create_dir_all(&dtt));
- check!(fs::create_dir_all(&d2));
- check!(check!(File::create(&canary)).write(b"foo"));
- check!(fs::soft_link(&d2, &dt.join("d2")));
- check!(fs::remove_dir_all(&d1));
-
- assert!(!d1.is_dir());
- assert!(canary.exists());
- }
-
- #[test]
- fn unicode_path_is_dir() {
- assert!(Path2::new(".").is_dir());
- assert!(!Path2::new("test/stdtest/fs.rs").is_dir());
-
- let tmpdir = tmpdir();
-
- let mut dirpath = tmpdir.path().to_path_buf();
- dirpath.push(&format!("test-가一ー你好"));
- check!(fs::create_dir(&dirpath));
- assert!(dirpath.is_dir());
-
- let mut filepath = dirpath;
- filepath.push("unicode-file-\u{ac00}\u{4e00}\u{30fc}\u{4f60}\u{597d}.rs");
- check!(File::create(&filepath)); // ignore return; touch only
- assert!(!filepath.is_dir());
- assert!(filepath.exists());
- }
-
- #[test]
- fn unicode_path_exists() {
- assert!(Path2::new(".").exists());
- assert!(!Path2::new("test/nonexistent-bogus-path").exists());
-
- let tmpdir = tmpdir();
- let unicode = tmpdir.path();
- let unicode = unicode.join(&format!("test-각丁ー再见"));
- check!(fs::create_dir(&unicode));
- assert!(unicode.exists());
- assert!(!Path2::new("test/unicode-bogus-path-각丁ー再见").exists());
- }
-
- #[test]
- fn copy_file_does_not_exist() {
- let from = Path2::new("test/nonexistent-bogus-path");
- let to = Path2::new("test/other-bogus-path");
-
- match fs::copy(&from, &to) {
- Ok(..) => panic!(),
- Err(..) => {
- assert!(!from.exists());
- assert!(!to.exists());
- }
- }
- }
-
- #[test]
- fn copy_file_ok() {
- let tmpdir = tmpdir();
- let input = tmpdir.join("in.txt");
- let out = tmpdir.join("out.txt");
-
- check!(check!(File::create(&input)).write(b"hello"));
- check!(fs::copy(&input, &out));
- let mut v = Vec::new();
- check!(check!(File::open(&out)).read_to_end(&mut v));
- assert_eq!(v.as_slice(), b"hello");
-
- assert_eq!(check!(input.metadata()).permissions(),
- check!(out.metadata()).permissions());
- }
-
- #[test]
- fn copy_file_dst_dir() {
- let tmpdir = tmpdir();
- let out = tmpdir.join("out");
-
- check!(File::create(&out));
- match fs::copy(&*out, tmpdir.path()) {
- Ok(..) => panic!(), Err(..) => {}
- }
- }
-
- #[test]
- fn copy_file_dst_exists() {
- let tmpdir = tmpdir();
- let input = tmpdir.join("in");
- let output = tmpdir.join("out");
-
- check!(check!(File::create(&input)).write("foo".as_bytes()));
- check!(check!(File::create(&output)).write("bar".as_bytes()));
- check!(fs::copy(&input, &output));
-
- let mut v = Vec::new();
- check!(check!(File::open(&output)).read_to_end(&mut v));
- assert_eq!(v, b"foo".to_vec());
- }
-
- #[test]
- fn copy_file_src_dir() {
- let tmpdir = tmpdir();
- let out = tmpdir.join("out");
-
- match fs::copy(tmpdir.path(), &out) {
- Ok(..) => panic!(), Err(..) => {}
- }
- assert!(!out.exists());
- }
-
- #[test]
- fn copy_file_preserves_perm_bits() {
- let tmpdir = tmpdir();
- let input = tmpdir.join("in.txt");
- let out = tmpdir.join("out.txt");
-
- let attr = check!(check!(File::create(&input)).metadata());
- let mut p = attr.permissions();
- p.set_readonly(true);
- check!(fs::set_permissions(&input, p));
- check!(fs::copy(&input, &out));
- assert!(check!(out.metadata()).permissions().readonly());
- }
-
- #[cfg(not(windows))] // FIXME(#10264) operation not permitted?
- #[test]
- fn symlinks_work() {
- let tmpdir = tmpdir();
- let input = tmpdir.join("in.txt");
- let out = tmpdir.join("out.txt");
-
- check!(check!(File::create(&input)).write("foobar".as_bytes()));
- check!(fs::soft_link(&input, &out));
- // if cfg!(not(windows)) {
- // assert_eq!(check!(lstat(&out)).kind, FileType::Symlink);
- // assert_eq!(check!(out.lstat()).kind, FileType::Symlink);
- // }
- assert_eq!(check!(fs::metadata(&out)).len(),
- check!(fs::metadata(&input)).len());
- let mut v = Vec::new();
- check!(check!(File::open(&out)).read_to_end(&mut v));
- assert_eq!(v, b"foobar".to_vec());
- }
-
- #[cfg(not(windows))] // apparently windows doesn't like symlinks
- #[test]
- fn symlink_noexist() {
- let tmpdir = tmpdir();
- // symlinks can point to things that don't exist
- check!(fs::soft_link(&tmpdir.join("foo"), &tmpdir.join("bar")));
- assert_eq!(check!(fs::read_link(&tmpdir.join("bar"))),
- tmpdir.join("foo"));
- }
-
- #[test]
- fn readlink_not_symlink() {
- let tmpdir = tmpdir();
- match fs::read_link(tmpdir.path()) {
- Ok(..) => panic!("wanted a failure"),
- Err(..) => {}
- }
- }
-
- #[test]
- fn links_work() {
- let tmpdir = tmpdir();
- let input = tmpdir.join("in.txt");
- let out = tmpdir.join("out.txt");
-
- check!(check!(File::create(&input)).write("foobar".as_bytes()));
- check!(fs::hard_link(&input, &out));
- assert_eq!(check!(fs::metadata(&out)).len(),
- check!(fs::metadata(&input)).len());
- assert_eq!(check!(fs::metadata(&out)).len(),
- check!(input.metadata()).len());
- let mut v = Vec::new();
- check!(check!(File::open(&out)).read_to_end(&mut v));
- assert_eq!(v, b"foobar".to_vec());
-
- // can't link to yourself
- match fs::hard_link(&input, &input) {
- Ok(..) => panic!("wanted a failure"),
- Err(..) => {}
- }
- // can't link to something that doesn't exist
- match fs::hard_link(&tmpdir.join("foo"), &tmpdir.join("bar")) {
- Ok(..) => panic!("wanted a failure"),
- Err(..) => {}
- }
- }
-
- #[test]
- fn chmod_works() {
- let tmpdir = tmpdir();
- let file = tmpdir.join("in.txt");
-
- check!(File::create(&file));
- let attr = check!(fs::metadata(&file));
- assert!(!attr.permissions().readonly());
- let mut p = attr.permissions();
- p.set_readonly(true);
- check!(fs::set_permissions(&file, p.clone()));
- let attr = check!(fs::metadata(&file));
- assert!(attr.permissions().readonly());
-
- match fs::set_permissions(&tmpdir.join("foo"), p) {
- Ok(..) => panic!("wanted a panic"),
- Err(..) => {}
- }
- }
-
- #[test]
- fn sync_doesnt_kill_anything() {
- let tmpdir = tmpdir();
- let path = tmpdir.join("in.txt");
-
- let mut file = check!(File::create(&path));
- check!(file.sync_all());
- check!(file.sync_data());
- check!(file.write(b"foo"));
- check!(file.sync_all());
- check!(file.sync_data());
- }
-
- #[test]
- fn truncate_works() {
- let tmpdir = tmpdir();
- let path = tmpdir.join("in.txt");
-
- let mut file = check!(File::create(&path));
- check!(file.write(b"foo"));
- check!(file.sync_all());
-
- // Do some simple things with truncation
- assert_eq!(check!(file.metadata()).len(), 3);
- check!(file.set_len(10));
- assert_eq!(check!(file.metadata()).len(), 10);
- check!(file.write(b"bar"));
- check!(file.sync_all());
- assert_eq!(check!(file.metadata()).len(), 10);
-
- let mut v = Vec::new();
- check!(check!(File::open(&path)).read_to_end(&mut v));
- assert_eq!(v, b"foobar\0\0\0\0".to_vec());
-
- // Truncate to a smaller length, don't seek, and then write something.
- // Ensure that the intermediate zeroes are all filled in (we're seeked
- // past the end of the file).
- check!(file.set_len(2));
- assert_eq!(check!(file.metadata()).len(), 2);
- check!(file.write(b"wut"));
- check!(file.sync_all());
- assert_eq!(check!(file.metadata()).len(), 9);
- let mut v = Vec::new();
- check!(check!(File::open(&path)).read_to_end(&mut v));
- assert_eq!(v, b"fo\0\0\0\0wut".to_vec());
- }
-
- #[test]
- fn open_flavors() {
- use fs::OpenOptions as OO;
- fn c<T: Clone>(t: &T) -> T { t.clone() }
-
- let tmpdir = tmpdir();
-
- let mut r = OO::new(); r.read(true);
- let mut w = OO::new(); w.write(true);
- let mut rw = OO::new(); rw.write(true).read(true);
-
- match r.open(&tmpdir.join("a")) {
- Ok(..) => panic!(), Err(..) => {}
- }
-
- // Perform each one twice to make sure that it succeeds the second time
- // (where the file exists)
- check!(c(&w).create(true).open(&tmpdir.join("b")));
- assert!(tmpdir.join("b").exists());
- check!(c(&w).create(true).open(&tmpdir.join("b")));
- check!(w.open(&tmpdir.join("b")));
-
- check!(c(&rw).create(true).open(&tmpdir.join("c")));
- assert!(tmpdir.join("c").exists());
- check!(c(&rw).create(true).open(&tmpdir.join("c")));
- check!(rw.open(&tmpdir.join("c")));
-
- check!(c(&w).append(true).create(true).open(&tmpdir.join("d")));
- assert!(tmpdir.join("d").exists());
- check!(c(&w).append(true).create(true).open(&tmpdir.join("d")));
- check!(c(&w).append(true).open(&tmpdir.join("d")));
-
- check!(c(&rw).append(true).create(true).open(&tmpdir.join("e")));
- assert!(tmpdir.join("e").exists());
- check!(c(&rw).append(true).create(true).open(&tmpdir.join("e")));
- check!(c(&rw).append(true).open(&tmpdir.join("e")));
-
- check!(c(&w).truncate(true).create(true).open(&tmpdir.join("f")));
- assert!(tmpdir.join("f").exists());
- check!(c(&w).truncate(true).create(true).open(&tmpdir.join("f")));
- check!(c(&w).truncate(true).open(&tmpdir.join("f")));
-
- check!(c(&rw).truncate(true).create(true).open(&tmpdir.join("g")));
- assert!(tmpdir.join("g").exists());
- check!(c(&rw).truncate(true).create(true).open(&tmpdir.join("g")));
- check!(c(&rw).truncate(true).open(&tmpdir.join("g")));
-
- check!(check!(File::create(&tmpdir.join("h"))).write("foo".as_bytes()));
- check!(r.open(&tmpdir.join("h")));
- {
- let mut f = check!(r.open(&tmpdir.join("h")));
- assert!(f.write("wut".as_bytes()).is_err());
- }
- assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
- {
- let mut f = check!(c(&w).append(true).open(&tmpdir.join("h")));
- check!(f.write("bar".as_bytes()));
- }
- assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 6);
- {
- let mut f = check!(c(&w).truncate(true).open(&tmpdir.join("h")));
- check!(f.write("bar".as_bytes()));
- }
- assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
- }
-
- #[test]
- fn utime() {
- let tmpdir = tmpdir();
- let path = tmpdir.join("a");
- check!(File::create(&path));
- // These numbers have to be bigger than the time in the day to account
- // for timezones Windows in particular will fail in certain timezones
- // with small enough values
- check!(fs::set_file_times(&path, 100000, 200000));
- assert_eq!(check!(path.metadata()).accessed(), 100000);
- assert_eq!(check!(path.metadata()).modified(), 200000);
- }
-
- #[test]
- fn utime_noexist() {
- let tmpdir = tmpdir();
-
- match fs::set_file_times(&tmpdir.join("a"), 100, 200) {
- Ok(..) => panic!(),
- Err(..) => {}
- }
- }
-
- #[test]
- fn binary_file() {
- let mut bytes = [0; 1024];
- StdRng::new().ok().unwrap().fill_bytes(&mut bytes);
-
- let tmpdir = tmpdir();
-
- check!(check!(File::create(&tmpdir.join("test"))).write(&bytes));
- let mut v = Vec::new();
- check!(check!(File::open(&tmpdir.join("test"))).read_to_end(&mut v));
- assert!(v == bytes.as_slice());
- }
-
- #[test]
- fn unlink_readonly() {
- let tmpdir = tmpdir();
- let path = tmpdir.join("file");
- check!(File::create(&path));
- let mut perm = check!(fs::metadata(&path)).permissions();
- perm.set_readonly(true);
- check!(fs::set_permissions(&path, perm));
- check!(fs::remove_file(&path));
- }
-}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Filesystem manipulation operations
+//!
+//! This module contains basic methods to manipulate the contents of the local
+//! filesystem. All methods in this module represent cross-platform filesystem
+//! operations. Extra platform-specific functionality can be found in the
+//! extension traits of `std::os::$platform`.
+
+#![unstable(feature = "fs")]
+
+use core::prelude::*;
+
+use io::{self, Error, ErrorKind, SeekFrom, Seek, Read, Write};
+use path::{AsPath, Path, PathBuf};
+use sys::fs2 as fs_imp;
+use sys_common::{AsInnerMut, FromInner, AsInner};
+use vec::Vec;
+
+pub use self::tempdir::TempDir;
+
+mod tempdir;
+
+/// A reference to an open file on the filesystem.
+///
+/// An instance of a `File` can be read and/or written depending on what options
+/// it was opened with. Files also implement `Seek` to alter the logical cursor
+/// that the file contains internally.
+///
+/// # Example
+///
+/// ```no_run
+/// use std::io::prelude::*;
+/// use std::fs::File;
+///
+/// # fn foo() -> std::io::Result<()> {
+/// let mut f = try!(File::create("foo.txt"));
+/// try!(f.write_all(b"Hello, world!"));
+///
+/// let mut f = try!(File::open("foo.txt"));
+/// let mut s = String::new();
+/// try!(f.read_to_string(&mut s));
+/// assert_eq!(s, "Hello, world!");
+/// # Ok(())
+/// # }
+/// ```
+pub struct File {
+ inner: fs_imp::File,
+ path: PathBuf,
+}
+
+/// Metadata information about a file.
+///
+/// This structure is returned from the `metadata` function or method and
+/// represents known metadata about a file such as its permissions, size,
+/// modification times, etc.
+pub struct Metadata(fs_imp::FileAttr);
+
+/// Iterator over the entries in a directory.
+///
+/// This iterator is returned from the `read_dir` function of this module and
+/// will yield instances of `io::Result<DirEntry>`. Through a `DirEntry`
+/// information like the entry's path and possibly other metadata can be
+/// learned.
+pub struct ReadDir(fs_imp::ReadDir);
+
+/// Entries returned by the `ReadDir` iterator.
+///
+/// An instance of `DirEntry` represents an entry inside of a directory on the
+/// filesystem. Each entry can be inspected via methods to learn about the full
+/// path or possibly other metadata through per-platform extension traits.
+pub struct DirEntry(fs_imp::DirEntry);
+
+/// An iterator that recursively walks over the contents of a directory.
+pub struct WalkDir {
+ cur: Option<ReadDir>,
+ stack: Vec<io::Result<ReadDir>>,
+}
+
+/// Options and flags which can be used to configure how a file is opened.
+///
+/// This builder exposes the ability to configure how a `File` is opened and
+/// what operations are permitted on the open file. The `File::open` and
+/// `File::create` methods are aliases for commonly used options using this
+/// builder.
+#[derive(Clone)]
+pub struct OpenOptions(fs_imp::OpenOptions);
+
+/// Representation of the various permissions on a file.
+///
+/// This module only currently provides one bit of information, `readonly`,
+/// which is exposed on all currently supported platforms. Unix-specific
+/// functionality, such as mode bits, is available through the
+/// `os::unix::PermissionsExt` trait.
+#[derive(Clone, PartialEq, Eq, Debug)]
+pub struct Permissions(fs_imp::FilePermissions);
+
+impl File {
+ /// Attempts to open a file in read-only mode.
+ ///
+ /// See the `OpenOptions::open` method for more details.
+ ///
+ /// # Errors
+ ///
+ /// This function will return an error if `path` does not already exist.
+ /// Other errors may also be returned according to `OpenOptions::open`.
+ pub fn open<P: AsPath + ?Sized>(path: &P) -> io::Result<File> {
+ OpenOptions::new().read(true).open(path)
+ }
+
+ /// Open a file in write-only mode.
+ ///
+ /// This function will create a file if it does not exist,
+ /// and will truncate it if it does.
+ ///
+ /// See the `OpenOptions::open` function for more details.
+ pub fn create<P: AsPath + ?Sized>(path: &P) -> io::Result<File> {
+ OpenOptions::new().write(true).create(true).truncate(true).open(path)
+ }
+
+ /// Returns the original path that was used to open this file.
+ pub fn path(&self) -> Option<&Path> {
+ Some(&self.path)
+ }
+
+ /// Attempt to sync all OS-internal metadata to disk.
+ ///
+ /// This function will attempt to ensure that all in-core data reaches the
+ /// filesystem before returning.
+ pub fn sync_all(&self) -> io::Result<()> {
+ self.inner.fsync()
+ }
+
+ /// This function is similar to `sync_all`, except that it may not
+ /// synchronize file metadata to the filesystem.
+ ///
+ /// This is intended for use cases that must synchronize content, but don't
+ /// need the metadata on disk. The goal of this method is to reduce disk
+ /// operations.
+ ///
+ /// Note that some platforms may simply implement this in terms of
+ /// `sync_all`.
+ pub fn sync_data(&self) -> io::Result<()> {
+ self.inner.datasync()
+ }
+
+ /// Truncates or extends the underlying file, updating the size of
+ /// this file to become `size`.
+ ///
+ /// If the `size` is less than the current file's size, then the file will
+ /// be shrunk. If it is greater than the current file's size, then the file
+ /// will be extended to `size` and have all of the intermediate data filled
+ /// in with 0s.
+ pub fn set_len(&self, size: u64) -> io::Result<()> {
+ self.inner.truncate(size)
+ }
+
+ /// Queries information about the underlying file.
+ pub fn metadata(&self) -> io::Result<Metadata> {
+ self.inner.file_attr().map(Metadata)
+ }
+}
+
+impl AsInner<fs_imp::File> for File {
+ fn as_inner(&self) -> &fs_imp::File { &self.inner }
+}
+impl Read for File {
+ fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+ self.inner.read(buf)
+ }
+}
+impl Write for File {
+ fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+ self.inner.write(buf)
+ }
+ fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
+}
+impl Seek for File {
+ fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
+ self.inner.seek(pos)
+ }
+}
+impl<'a> Read for &'a File {
+ fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+ self.inner.read(buf)
+ }
+}
+impl<'a> Write for &'a File {
+ fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+ self.inner.write(buf)
+ }
+ fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
+}
+impl<'a> Seek for &'a File {
+ fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
+ self.inner.seek(pos)
+ }
+}
+
+impl OpenOptions {
+ /// Creates a blank net set of options ready for configuration.
+ ///
+ /// All options are initially set to `false`.
+ pub fn new() -> OpenOptions {
+ OpenOptions(fs_imp::OpenOptions::new())
+ }
+
+ /// Set the option for read access.
+ ///
+ /// This option, when true, will indicate that the file should be
+ /// `read`-able if opened.
+ pub fn read(&mut self, read: bool) -> &mut OpenOptions {
+ self.0.read(read); self
+ }
+
+ /// Set the option for write access.
+ ///
+ /// This option, when true, will indicate that the file should be
+ /// `write`-able if opened.
+ pub fn write(&mut self, write: bool) -> &mut OpenOptions {
+ self.0.write(write); self
+ }
+
+ /// Set the option for the append mode.
+ ///
+ /// This option, when true, means that writes will append to a file instead
+ /// of overwriting previous contents.
+ pub fn append(&mut self, append: bool) -> &mut OpenOptions {
+ self.0.append(append); self
+ }
+
+ /// Set the option for truncating a previous file.
+ ///
+ /// If a file is successfully opened with this option set it will truncate
+ /// the file to 0 length if it already exists.
+ pub fn truncate(&mut self, truncate: bool) -> &mut OpenOptions {
+ self.0.truncate(truncate); self
+ }
+
+ /// Set the option for creating a new file.
+ ///
+ /// This option indicates whether a new file will be created if the file
+ /// does not yet already exist.
+ pub fn create(&mut self, create: bool) -> &mut OpenOptions {
+ self.0.create(create); self
+ }
+
+ /// Open a file at `path` with the options specified by `self`.
+ ///
+ /// # Errors
+ ///
+ /// This function will return an error under a number of different
+ /// circumstances, to include but not limited to:
+ ///
+ /// * Opening a file that does not exist with read access.
+ /// * Attempting to open a file with access that the user lacks
+ /// permissions for
+ /// * Filesystem-level errors (full disk, etc)
+ pub fn open<P: AsPath + ?Sized>(&self, path: &P) -> io::Result<File> {
+ let path = path.as_path();
+ let inner = try!(fs_imp::File::open(path, &self.0));
+
+ // On *BSD systems, we can open a directory as a file and read from
+ // it: fd=open("/tmp", O_RDONLY); read(fd, buf, N); due to an old
+ // tradition before the introduction of opendir(3). We explicitly
+ // reject it because there are few use cases.
+ if cfg!(not(any(target_os = "linux", target_os = "android"))) &&
+ try!(inner.file_attr()).is_dir() {
+ Err(Error::new(ErrorKind::InvalidInput, "is a directory", None))
+ } else {
+ Ok(File { path: path.to_path_buf(), inner: inner })
+ }
+ }
+}
+impl AsInnerMut<fs_imp::OpenOptions> for OpenOptions {
+ fn as_inner_mut(&mut self) -> &mut fs_imp::OpenOptions { &mut self.0 }
+}
+
+impl Metadata {
+ /// Returns whether this metadata is for a directory.
+ pub fn is_dir(&self) -> bool { self.0.is_dir() }
+
+ /// Returns whether this metadata is for a regular file.
+ pub fn is_file(&self) -> bool { self.0.is_file() }
+
+ /// Returns the size of the file, in bytes, this metadata is for.
+ pub fn len(&self) -> u64 { self.0.size() }
+
+ /// Returns the permissions of the file this metadata is for.
+ pub fn permissions(&self) -> Permissions {
+ Permissions(self.0.perm())
+ }
+
+ /// Returns the most recent access time for a file.
+ ///
+ /// The return value is in milliseconds since the epoch.
+ pub fn accessed(&self) -> u64 { self.0.accessed() }
+
+ /// Returns the most recent modification time for a file.
+ ///
+ /// The return value is in milliseconds since the epoch.
+ pub fn modified(&self) -> u64 { self.0.modified() }
+}
+
+impl Permissions {
+ /// Returns whether these permissions describe a readonly file.
+ pub fn readonly(&self) -> bool { self.0.readonly() }
+
+ /// Modify the readonly flag for this set of permissions.
+ ///
+ /// This operation does **not** modify the filesystem. To modify the
+ /// filesystem use the `fs::set_permissions` function.
+ pub fn set_readonly(&mut self, readonly: bool) {
+ self.0.set_readonly(readonly)
+ }
+}
+
+impl FromInner<fs_imp::FilePermissions> for Permissions {
+ fn from_inner(f: fs_imp::FilePermissions) -> Permissions {
+ Permissions(f)
+ }
+}
+
+impl AsInner<fs_imp::FilePermissions> for Permissions {
+ fn as_inner(&self) -> &fs_imp::FilePermissions { &self.0 }
+}
+
+impl Iterator for ReadDir {
+ type Item = io::Result<DirEntry>;
+
+ fn next(&mut self) -> Option<io::Result<DirEntry>> {
+ self.0.next().map(|entry| entry.map(DirEntry))
+ }
+}
+
+impl DirEntry {
+ /// Returns the full path to the file that this entry represents.
+ ///
+ /// The full path is created by joining the original path to `read_dir` or
+ /// `walk_dir` with the filename of this entry.
+ pub fn path(&self) -> PathBuf { self.0.path() }
+}
+
+/// Remove a file from the underlying filesystem.
+///
+/// # Example
+///
+/// ```rust,no_run
+/// use std::fs;
+///
+/// fs::remove_file("/some/file/path.txt");
+/// ```
+///
+/// Note that, just because an unlink call was successful, it is not
+/// guaranteed that a file is immediately deleted (e.g. depending on
+/// platform, other open file descriptors may prevent immediate removal).
+///
+/// # Errors
+///
+/// This function will return an error if `path` points to a directory, if the
+/// user lacks permissions to remove the file, or if some other filesystem-level
+/// error occurs.
+pub fn remove_file<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ let path = path.as_path();
+ let e = match fs_imp::unlink(path) {
+ Ok(()) => return Ok(()),
+ Err(e) => e,
+ };
+ if !cfg!(windows) { return Err(e) }
+
+ // On unix, a readonly file can be successfully removed. On windows,
+ // however, it cannot. To keep the two platforms in line with
+ // respect to their behavior, catch this case on windows, attempt to
+ // change it to read-write, and then remove the file.
+ if e.kind() != ErrorKind::PermissionDenied { return Err(e) }
+
+ let attr = match metadata(path) { Ok(a) => a, Err(..) => return Err(e) };
+ let mut perms = attr.permissions();
+ if !perms.readonly() { return Err(e) }
+ perms.set_readonly(false);
+
+ if set_permissions(path, perms).is_err() { return Err(e) }
+ if fs_imp::unlink(path).is_ok() { return Ok(()) }
+
+ // Oops, try to put things back the way we found it
+ let _ = set_permissions(path, attr.permissions());
+ Err(e)
+}
+
+/// Given a path, query the file system to get information about a file,
+/// directory, etc.
+///
+/// This function will traverse soft links to query information about the
+/// destination file.
+///
+/// # Example
+///
+/// ```rust,no_run
+/// # fn foo() -> std::io::Result<()> {
+/// use std::fs;
+///
+/// let attr = try!(fs::metadata("/some/file/path.txt"));
+/// // inspect attr ...
+/// # Ok(())
+/// # }
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the user lacks the requisite
+/// permissions to perform a `metadata` call on the given `path` or if there
+/// is no entry in the filesystem at the provided path.
+pub fn metadata<P: AsPath + ?Sized>(path: &P) -> io::Result<Metadata> {
+ fs_imp::stat(path.as_path()).map(Metadata)
+}
+
+/// Rename a file or directory to a new name.
+///
+/// # Example
+///
+/// ```rust,no_run
+/// use std::fs;
+///
+/// fs::rename("foo", "bar");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the provided `from` doesn't exist, if
+/// the process lacks permissions to view the contents, if `from` and `to`
+/// reside on separate filesystems, or if some other intermittent I/O error
+/// occurs.
+pub fn rename<P: AsPath + ?Sized, Q: AsPath + ?Sized>(from: &P, to: &Q)
+ -> io::Result<()> {
+ fs_imp::rename(from.as_path(), to.as_path())
+}
+
+/// Copies the contents of one file to another. This function will also
+/// copy the permission bits of the original file to the destination file.
+///
+/// This function will **overwrite** the contents of `to`.
+///
+/// Note that if `from` and `to` both point to the same file, then the file
+/// will likely get truncated by this operation.
+///
+/// # Example
+///
+/// ```rust
+/// use std::fs;
+///
+/// fs::copy("foo.txt", "bar.txt");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error in the following situations, but is not
+/// limited to just these cases:
+///
+/// * The `from` path is not a file
+/// * The `from` file does not exist
+/// * The current process does not have the permission rights to access
+/// `from` or write `to`
+pub fn copy<P: AsPath + ?Sized, Q: AsPath + ?Sized>(from: &P, to: &Q)
+ -> io::Result<u64> {
+ let from = from.as_path();
+ if !from.is_file() {
+ return Err(Error::new(ErrorKind::MismatchedFileTypeForOperation,
+ "the source path is not an existing file",
+ None))
+ }
+
+ let mut reader = try!(File::open(from));
+ let mut writer = try!(File::create(to));
+ let perm = try!(reader.metadata()).permissions();
+
+ let ret = try!(io::copy(&mut reader, &mut writer));
+ try!(set_permissions(to, perm));
+ Ok(ret)
+}
+
+/// Creates a new hard link on the filesystem.
+///
+/// The `dst` path will be a link pointing to the `src` path. Note that systems
+/// often require these two paths to both be located on the same filesystem.
+pub fn hard_link<P: AsPath + ?Sized, Q: AsPath + ?Sized>(src: &P, dst: &Q)
+ -> io::Result<()> {
+ fs_imp::link(src.as_path(), dst.as_path())
+}
+
+/// Creates a new soft link on the filesystem.
+///
+/// The `dst` path will be a soft link pointing to the `src` path.
+pub fn soft_link<P: AsPath + ?Sized, Q: AsPath + ?Sized>(src: &P, dst: &Q)
+ -> io::Result<()> {
+ fs_imp::symlink(src.as_path(), dst.as_path())
+}
+
+/// Reads a soft link, returning the file that the link points to.
+///
+/// # Errors
+///
+/// This function will return an error on failure. Failure conditions include
+/// reading a file that does not exist or reading a file that is not a soft
+/// link.
+pub fn read_link<P: AsPath + ?Sized>(path: &P) -> io::Result<PathBuf> {
+ fs_imp::readlink(path.as_path())
+}
+
+/// Create a new, empty directory at the provided path
+///
+/// # Example
+///
+/// ```rust
+/// use std::fs;
+///
+/// fs::create_dir("/some/dir");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the user lacks permissions to make a
+/// new directory at the provided `path`, or if the directory already exists.
+pub fn create_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ fs_imp::mkdir(path.as_path())
+}
+
+/// Recursively create a directory and all of its parent components if they
+/// are missing.
+///
+/// # Errors
+///
+/// This function will fail if any directory in the path specified by `path`
+/// does not already exist and it could not be created otherwise. The specific
+/// error conditions for when a directory is being created (after it is
+/// determined to not exist) are outlined by `fs::create_dir`.
+pub fn create_dir_all<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ let path = path.as_path();
+ if path.is_dir() { return Ok(()) }
+ match path.parent() {
+ Some(p) if p != path => try!(create_dir_all(p)),
+ _ => {}
+ }
+ // If the file name of the given `path` is blank then the creation of the
+ // parent directory will have taken care of the whole path for us, so we're
+ // good to go.
+ if path.file_name().is_none() {
+ Ok(())
+ } else {
+ create_dir(path)
+ }
+}
+
+/// Remove an existing, empty directory
+///
+/// # Example
+///
+/// ```rust
+/// use std::fs;
+///
+/// fs::remove_dir("/some/dir");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the user lacks permissions to remove
+/// the directory at the provided `path`, or if the directory isn't empty.
+pub fn remove_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ fs_imp::rmdir(path.as_path())
+}
+
+/// Removes a directory at this path, after removing all its contents. Use
+/// carefully!
+///
+/// This function does **not** follow soft links and it will simply remove the
+/// soft link itself.
+///
+/// # Errors
+///
+/// See `file::remove_file` and `fs::remove_dir`
+pub fn remove_dir_all<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ let path = path.as_path();
+ for child in try!(read_dir(path)) {
+ let child = try!(child).path();
+ let stat = try!(lstat(&*child));
+ if stat.is_dir() {
+ try!(remove_dir_all(&*child));
+ } else {
+ try!(remove_file(&*child));
+ }
+ }
+ return remove_dir(path);
+
+ #[cfg(unix)]
+ fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::lstat(path) }
+ #[cfg(windows)]
+ fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::stat(path) }
+}
+
+/// Returns an iterator over the entries within a directory.
+///
+/// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
+/// be encountered after an iterator is initially constructed.
+///
+/// # Example
+///
+/// ```rust
+/// use std::io;
+/// use std::fs::{self, PathExt, DirEntry};
+/// use std::path::Path;
+///
+/// // one possible implementation of fs::walk_dir only visiting files
+/// fn visit_dirs(dir: &Path, cb: &mut FnMut(DirEntry)) -> io::Result<()> {
+/// if dir.is_dir() {
+/// for entry in try!(fs::read_dir(dir)) {
+/// let entry = try!(entry);
+/// if entry.path().is_dir() {
+/// try!(visit_dirs(&entry.path(), cb));
+/// } else {
+/// cb(entry);
+/// }
+/// }
+/// }
+/// Ok(())
+/// }
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the provided `path` doesn't exist, if
+/// the process lacks permissions to view the contents or if the `path` points
+/// at a non-directory file
+pub fn read_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<ReadDir> {
+ fs_imp::readdir(path.as_path()).map(ReadDir)
+}
+
+/// Returns an iterator that will recursively walk the directory structure
+/// rooted at `path`.
+///
+/// The path given will not be iterated over, and this will perform iteration in
+/// some top-down order. The contents of unreadable subdirectories are ignored.
+///
+/// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
+/// be encountered after an iterator is initially constructed.
+pub fn walk_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<WalkDir> {
+ let start = try!(read_dir(path));
+ Ok(WalkDir { cur: Some(start), stack: Vec::new() })
+}
+
+impl Iterator for WalkDir {
+ type Item = io::Result<DirEntry>;
+
+ fn next(&mut self) -> Option<io::Result<DirEntry>> {
+ loop {
+ if let Some(ref mut cur) = self.cur {
+ match cur.next() {
+ Some(Err(e)) => return Some(Err(e)),
+ Some(Ok(next)) => {
+ let path = next.path();
+ if path.is_dir() {
+ self.stack.push(read_dir(&*path));
+ }
+ return Some(Ok(next))
+ }
+ None => {}
+ }
+ }
+ self.cur = None;
+ match self.stack.pop() {
+ Some(Err(e)) => return Some(Err(e)),
+ Some(Ok(next)) => self.cur = Some(next),
+ None => return None,
+ }
+ }
+ }
+}
+
+/// Utility methods for paths.
+pub trait PathExt {
+ /// Get information on the file, directory, etc at this path.
+ ///
+ /// Consult the `fs::stat` documentation for more info.
+ ///
+ /// This call preserves identical runtime/error semantics with `file::stat`.
+ fn metadata(&self) -> io::Result<Metadata>;
+
+ /// Boolean value indicator whether the underlying file exists on the local
+ /// filesystem. Returns false in exactly the cases where `fs::stat` fails.
+ fn exists(&self) -> bool;
+
+ /// Whether the underlying implementation (be it a file path, or something
+ /// else) points at a "regular file" on the FS. Will return false for paths
+ /// to non-existent locations or directories or other non-regular files
+ /// (named pipes, etc). Follows links when making this determination.
+ fn is_file(&self) -> bool;
+
+ /// Whether the underlying implementation (be it a file path, or something
+ /// else) is pointing at a directory in the underlying FS. Will return
+ /// false for paths to non-existent locations or if the item is not a
+ /// directory (eg files, named pipes, etc). Follows links when making this
+ /// determination.
+ fn is_dir(&self) -> bool;
+}
+
+impl PathExt for Path {
+ fn metadata(&self) -> io::Result<Metadata> { metadata(self) }
+
+ fn exists(&self) -> bool { metadata(self).is_ok() }
+
+ fn is_file(&self) -> bool {
+ metadata(self).map(|s| s.is_file()).unwrap_or(false)
+ }
+ fn is_dir(&self) -> bool {
+ metadata(self).map(|s| s.is_dir()).unwrap_or(false)
+ }
+}
+
+/// Changes the timestamps for a file's last modification and access time.
+///
+/// The file at the path specified will have its last access time set to
+/// `atime` and its modification time set to `mtime`. The times specified should
+/// be in milliseconds.
+pub fn set_file_times<P: AsPath + ?Sized>(path: &P, accessed: u64,
+ modified: u64) -> io::Result<()> {
+ fs_imp::utimes(path.as_path(), accessed, modified)
+}
+
+/// Changes the permissions found on a file or a directory.
+///
+/// # Example
+///
+/// ```
+/// # fn foo() -> std::io::Result<()> {
+/// use std::fs;
+///
+/// let mut perms = try!(fs::metadata("foo.txt")).permissions();
+/// perms.set_readonly(true);
+/// try!(fs::set_permissions("foo.txt", perms));
+/// # Ok(())
+/// # }
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the provided `path` doesn't exist, if
+/// the process lacks permissions to change the attributes of the file, or if
+/// some other I/O error is encountered.
+pub fn set_permissions<P: AsPath + ?Sized>(path: &P, perm: Permissions)
+ -> io::Result<()> {
+ fs_imp::set_perm(path.as_path(), perm.0)
+}
+
+#[cfg(test)]
+mod tests {
+ #![allow(deprecated)] //rand
+
+ use prelude::v1::*;
+ use io::prelude::*;
+
+ use fs::{self, File, OpenOptions};
+ use io::{ErrorKind, SeekFrom};
+ use path::PathBuf;
+ use path::Path as Path2;
+ use os;
+ use rand::{self, StdRng, Rng};
+ use str;
+
+ macro_rules! check { ($e:expr) => (
+ match $e {
+ Ok(t) => t,
+ Err(e) => panic!("{} failed with: {}", stringify!($e), e),
+ }
+ ) }
+
+ macro_rules! error { ($e:expr, $s:expr) => (
+ match $e {
+ Ok(_) => panic!("Unexpected success. Should've been: {:?}", $s),
+ Err(ref err) => assert!(err.to_string().contains($s.as_slice()),
+ format!("`{}` did not contain `{}`", err, $s))
+ }
+ ) }
+
+ pub struct TempDir(PathBuf);
+
+ impl TempDir {
+ fn join(&self, path: &str) -> PathBuf {
+ let TempDir(ref p) = *self;
+ p.join(path)
+ }
+
+ fn path<'a>(&'a self) -> &'a Path2 {
+ let TempDir(ref p) = *self;
+ p
+ }
+ }
+
+ impl Drop for TempDir {
+ fn drop(&mut self) {
+ // Gee, seeing how we're testing the fs module I sure hope that we
+ // at least implement this correctly!
+ let TempDir(ref p) = *self;
+ check!(fs::remove_dir_all(p));
+ }
+ }
+
+ pub fn tmpdir() -> TempDir {
+ let s = os::tmpdir();
+ let p = Path2::new(s.as_str().unwrap());
+ let ret = p.join(&format!("rust-{}", rand::random::<u32>()));
+ check!(fs::create_dir(&ret));
+ TempDir(ret)
+ }
+
+ #[test]
+ fn file_test_io_smoke_test() {
+ let message = "it's alright. have a good time";
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test.txt");
+ {
+ let mut write_stream = check!(File::create(filename));
+ check!(write_stream.write(message.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ let mut read_buf = [0; 1028];
+ let read_str = match check!(read_stream.read(&mut read_buf)) {
+ -1|0 => panic!("shouldn't happen"),
+ n => str::from_utf8(&read_buf[..n]).unwrap().to_string()
+ };
+ assert_eq!(read_str.as_slice(), message);
+ }
+ check!(fs::remove_file(filename));
+ }
+
+ #[test]
+ fn invalid_path_raises() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_that_does_not_exist.txt");
+ let result = File::open(filename);
+
+ if cfg!(unix) {
+ error!(result, "o such file or directory");
+ }
+ // error!(result, "couldn't open path as file");
+ // error!(result, format!("path={}; mode=open; access=read", filename.display()));
+ }
+
+ #[test]
+ fn file_test_iounlinking_invalid_path_should_raise_condition() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_another_file_that_does_not_exist.txt");
+
+ let result = fs::remove_file(filename);
+
+ if cfg!(unix) {
+ error!(result, "o such file or directory");
+ }
+ // error!(result, "couldn't unlink path");
+ // error!(result, format!("path={}", filename.display()));
+ }
+
+ #[test]
+ fn file_test_io_non_positional_read() {
+ let message: &str = "ten-four";
+ let mut read_mem = [0; 8];
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_positional.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(message.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ {
+ let read_buf = &mut read_mem[0..4];
+ check!(read_stream.read(read_buf));
+ }
+ {
+ let read_buf = &mut read_mem[4..8];
+ check!(read_stream.read(read_buf));
+ }
+ }
+ check!(fs::remove_file(filename));
+ let read_str = str::from_utf8(&read_mem).unwrap();
+ assert_eq!(read_str, message);
+ }
+
+ #[test]
+ fn file_test_io_seek_and_tell_smoke_test() {
+ let message = "ten-four";
+ let mut read_mem = [0; 4];
+ let set_cursor = 4 as u64;
+ let mut tell_pos_pre_read;
+ let mut tell_pos_post_read;
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_seeking.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(message.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ check!(read_stream.seek(SeekFrom::Start(set_cursor)));
+ tell_pos_pre_read = check!(read_stream.seek(SeekFrom::Current(0)));
+ check!(read_stream.read(&mut read_mem));
+ tell_pos_post_read = check!(read_stream.seek(SeekFrom::Current(0)));
+ }
+ check!(fs::remove_file(filename));
+ let read_str = str::from_utf8(&read_mem).unwrap();
+ assert_eq!(read_str, &message[4..8]);
+ assert_eq!(tell_pos_pre_read, set_cursor);
+ assert_eq!(tell_pos_post_read, message.len() as u64);
+ }
+
+ #[test]
+ fn file_test_io_seek_and_write() {
+ let initial_msg = "food-is-yummy";
+ let overwrite_msg = "-the-bar!!";
+ let final_msg = "foo-the-bar!!";
+ let seek_idx = 3;
+ let mut read_mem = [0; 13];
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_seek_and_write.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(initial_msg.as_bytes()));
+ check!(rw_stream.seek(SeekFrom::Start(seek_idx)));
+ check!(rw_stream.write(overwrite_msg.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ check!(read_stream.read(&mut read_mem));
+ }
+ check!(fs::remove_file(filename));
+ let read_str = str::from_utf8(&read_mem).unwrap();
+ assert!(read_str == final_msg);
+ }
+
+ #[test]
+ fn file_test_io_seek_shakedown() {
+ // 01234567890123
+ let initial_msg = "qwer-asdf-zxcv";
+ let chunk_one: &str = "qwer";
+ let chunk_two: &str = "asdf";
+ let chunk_three: &str = "zxcv";
+ let mut read_mem = [0; 4];
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_seek_shakedown.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(initial_msg.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+
+ check!(read_stream.seek(SeekFrom::End(-4)));
+ check!(read_stream.read(&mut read_mem));
+ assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_three);
+
+ check!(read_stream.seek(SeekFrom::Current(-9)));
+ check!(read_stream.read(&mut read_mem));
+ assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_two);
+
+ check!(read_stream.seek(SeekFrom::Start(0)));
+ check!(read_stream.read(&mut read_mem));
+ assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_one);
+ }
+ check!(fs::remove_file(filename));
+ }
+
+ #[test]
+ fn file_test_stat_is_correct_on_is_file() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_stat_correct_on_is_file.txt");
+ {
+ let mut opts = OpenOptions::new();
+ let mut fs = check!(opts.read(true).write(true)
+ .create(true).open(filename));
+ let msg = "hw";
+ fs.write(msg.as_bytes()).unwrap();
+
+ let fstat_res = check!(fs.metadata());
+ assert!(fstat_res.is_file());
+ }
+ let stat_res_fn = check!(fs::metadata(filename));
+ assert!(stat_res_fn.is_file());
+ let stat_res_meth = check!(filename.metadata());
+ assert!(stat_res_meth.is_file());
+ check!(fs::remove_file(filename));
+ }
+
+ #[test]
+ fn file_test_stat_is_correct_on_is_dir() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_stat_correct_on_is_dir");
+ check!(fs::create_dir(filename));
+ let stat_res_fn = check!(fs::metadata(filename));
+ assert!(stat_res_fn.is_dir());
+ let stat_res_meth = check!(filename.metadata());
+ assert!(stat_res_meth.is_dir());
+ check!(fs::remove_dir(filename));
+ }
+
+ #[test]
+ fn file_test_fileinfo_false_when_checking_is_file_on_a_directory() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("fileinfo_false_on_dir");
+ check!(fs::create_dir(dir));
+ assert!(dir.is_file() == false);
+ check!(fs::remove_dir(dir));
+ }
+
+ #[test]
+ fn file_test_fileinfo_check_exists_before_and_after_file_creation() {
+ let tmpdir = tmpdir();
+ let file = &tmpdir.join("fileinfo_check_exists_b_and_a.txt");
+ check!(check!(File::create(file)).write(b"foo"));
+ assert!(file.exists());
+ check!(fs::remove_file(file));
+ assert!(!file.exists());
+ }
+
+ #[test]
+ fn file_test_directoryinfo_check_exists_before_and_after_mkdir() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("before_and_after_dir");
+ assert!(!dir.exists());
+ check!(fs::create_dir(dir));
+ assert!(dir.exists());
+ assert!(dir.is_dir());
+ check!(fs::remove_dir(dir));
+ assert!(!dir.exists());
+ }
+
+ #[test]
+ fn file_test_directoryinfo_readdir() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("di_readdir");
+ check!(fs::create_dir(dir));
+ let prefix = "foo";
+ for n in range(0, 3) {
+ let f = dir.join(&format!("{}.txt", n));
+ let mut w = check!(File::create(&f));
+ let msg_str = format!("{}{}", prefix, n.to_string());
+ let msg = msg_str.as_bytes();
+ check!(w.write(msg));
+ }
+ let files = check!(fs::read_dir(dir));
+ let mut mem = [0u8; 4];
+ for f in files {
+ let f = f.unwrap().path();
+ {
+ let n = f.file_stem().unwrap();
+ check!(check!(File::open(&f)).read(&mut mem));
+ let read_str = str::from_utf8(&mem).unwrap();
+ let expected = format!("{}{}", prefix, n.to_str().unwrap());
+ assert_eq!(expected.as_slice(), read_str);
+ }
+ check!(fs::remove_file(&f));
+ }
+ check!(fs::remove_dir(dir));
+ }
+
+ #[test]
+ fn file_test_walk_dir() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("walk_dir");
+ check!(fs::create_dir(dir));
+
+ let dir1 = &dir.join("01/02/03");
+ check!(fs::create_dir_all(dir1));
+ check!(File::create(&dir1.join("04")));
+
+ let dir2 = &dir.join("11/12/13");
+ check!(fs::create_dir_all(dir2));
+ check!(File::create(&dir2.join("14")));
+
+ let files = check!(fs::walk_dir(dir));
+ let mut cur = [0u8; 2];
+ for f in files {
+ let f = f.unwrap().path();
+ let stem = f.file_stem().unwrap().to_str().unwrap();
+ let root = stem.as_bytes()[0] - b'0';
+ let name = stem.as_bytes()[1] - b'0';
+ assert!(cur[root as usize] < name);
+ cur[root as usize] = name;
+ }
+
+ check!(fs::remove_dir_all(dir));
+ }
+
+ #[test]
+ fn mkdir_path_already_exists_error() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("mkdir_error_twice");
+ check!(fs::create_dir(dir));
+ let e = fs::create_dir(dir).err().unwrap();
+ assert_eq!(e.kind(), ErrorKind::PathAlreadyExists);
+ }
+
+ #[test]
+ fn recursive_mkdir() {
+ let tmpdir = tmpdir();
+ let dir = tmpdir.join("d1/d2");
+ check!(fs::create_dir_all(&dir));
+ assert!(dir.is_dir())
+ }
+
+ #[test]
+ fn recursive_mkdir_failure() {
+ let tmpdir = tmpdir();
+ let dir = tmpdir.join("d1");
+ let file = dir.join("f1");
+
+ check!(fs::create_dir_all(&dir));
+ check!(File::create(&file));
+
+ let result = fs::create_dir_all(&file);
+
+ assert!(result.is_err());
+ // error!(result, "couldn't recursively mkdir");
+ // error!(result, "couldn't create directory");
+ // error!(result, "mode=0700");
+ // error!(result, format!("path={}", file.display()));
+ }
+
+ #[test]
+ fn recursive_mkdir_slash() {
+ check!(fs::create_dir_all(&Path2::new("/")));
+ }
+
+ // FIXME(#12795) depends on lstat to work on windows
+ #[cfg(not(windows))]
+ #[test]
+ fn recursive_rmdir() {
+ let tmpdir = tmpdir();
+ let d1 = tmpdir.join("d1");
+ let dt = d1.join("t");
+ let dtt = dt.join("t");
+ let d2 = tmpdir.join("d2");
+ let canary = d2.join("do_not_delete");
+ check!(fs::create_dir_all(&dtt));
+ check!(fs::create_dir_all(&d2));
+ check!(check!(File::create(&canary)).write(b"foo"));
+ check!(fs::soft_link(&d2, &dt.join("d2")));
+ check!(fs::remove_dir_all(&d1));
+
+ assert!(!d1.is_dir());
+ assert!(canary.exists());
+ }
+
+ #[test]
+ fn unicode_path_is_dir() {
+ assert!(Path2::new(".").is_dir());
+ assert!(!Path2::new("test/stdtest/fs.rs").is_dir());
+
+ let tmpdir = tmpdir();
+
+ let mut dirpath = tmpdir.path().to_path_buf();
+ dirpath.push(&format!("test-가一ー你好"));
+ check!(fs::create_dir(&dirpath));
+ assert!(dirpath.is_dir());
+
+ let mut filepath = dirpath;
+ filepath.push("unicode-file-\u{ac00}\u{4e00}\u{30fc}\u{4f60}\u{597d}.rs");
+ check!(File::create(&filepath)); // ignore return; touch only
+ assert!(!filepath.is_dir());
+ assert!(filepath.exists());
+ }
+
+ #[test]
+ fn unicode_path_exists() {
+ assert!(Path2::new(".").exists());
+ assert!(!Path2::new("test/nonexistent-bogus-path").exists());
+
+ let tmpdir = tmpdir();
+ let unicode = tmpdir.path();
+ let unicode = unicode.join(&format!("test-각丁ー再见"));
+ check!(fs::create_dir(&unicode));
+ assert!(unicode.exists());
+ assert!(!Path2::new("test/unicode-bogus-path-각丁ー再见").exists());
+ }
+
+ #[test]
+ fn copy_file_does_not_exist() {
+ let from = Path2::new("test/nonexistent-bogus-path");
+ let to = Path2::new("test/other-bogus-path");
+
+ match fs::copy(&from, &to) {
+ Ok(..) => panic!(),
+ Err(..) => {
+ assert!(!from.exists());
+ assert!(!to.exists());
+ }
+ }
+ }
+
+ #[test]
+ fn copy_file_ok() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ check!(check!(File::create(&input)).write(b"hello"));
+ check!(fs::copy(&input, &out));
+ let mut v = Vec::new();
+ check!(check!(File::open(&out)).read_to_end(&mut v));
+ assert_eq!(v.as_slice(), b"hello");
+
+ assert_eq!(check!(input.metadata()).permissions(),
+ check!(out.metadata()).permissions());
+ }
+
+ #[test]
+ fn copy_file_dst_dir() {
+ let tmpdir = tmpdir();
+ let out = tmpdir.join("out");
+
+ check!(File::create(&out));
+ match fs::copy(&*out, tmpdir.path()) {
+ Ok(..) => panic!(), Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn copy_file_dst_exists() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in");
+ let output = tmpdir.join("out");
+
+ check!(check!(File::create(&input)).write("foo".as_bytes()));
+ check!(check!(File::create(&output)).write("bar".as_bytes()));
+ check!(fs::copy(&input, &output));
+
+ let mut v = Vec::new();
+ check!(check!(File::open(&output)).read_to_end(&mut v));
+ assert_eq!(v, b"foo".to_vec());
+ }
+
+ #[test]
+ fn copy_file_src_dir() {
+ let tmpdir = tmpdir();
+ let out = tmpdir.join("out");
+
+ match fs::copy(tmpdir.path(), &out) {
+ Ok(..) => panic!(), Err(..) => {}
+ }
+ assert!(!out.exists());
+ }
+
+ #[test]
+ fn copy_file_preserves_perm_bits() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ let attr = check!(check!(File::create(&input)).metadata());
+ let mut p = attr.permissions();
+ p.set_readonly(true);
+ check!(fs::set_permissions(&input, p));
+ check!(fs::copy(&input, &out));
+ assert!(check!(out.metadata()).permissions().readonly());
+ }
+
+ #[cfg(not(windows))] // FIXME(#10264) operation not permitted?
+ #[test]
+ fn symlinks_work() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ check!(check!(File::create(&input)).write("foobar".as_bytes()));
+ check!(fs::soft_link(&input, &out));
+ // if cfg!(not(windows)) {
+ // assert_eq!(check!(lstat(&out)).kind, FileType::Symlink);
+ // assert_eq!(check!(out.lstat()).kind, FileType::Symlink);
+ // }
+ assert_eq!(check!(fs::metadata(&out)).len(),
+ check!(fs::metadata(&input)).len());
+ let mut v = Vec::new();
+ check!(check!(File::open(&out)).read_to_end(&mut v));
+ assert_eq!(v, b"foobar".to_vec());
+ }
+
+ #[cfg(not(windows))] // apparently windows doesn't like symlinks
+ #[test]
+ fn symlink_noexist() {
+ let tmpdir = tmpdir();
+ // symlinks can point to things that don't exist
+ check!(fs::soft_link(&tmpdir.join("foo"), &tmpdir.join("bar")));
+ assert_eq!(check!(fs::read_link(&tmpdir.join("bar"))),
+ tmpdir.join("foo"));
+ }
+
+ #[test]
+ fn readlink_not_symlink() {
+ let tmpdir = tmpdir();
+ match fs::read_link(tmpdir.path()) {
+ Ok(..) => panic!("wanted a failure"),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn links_work() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ check!(check!(File::create(&input)).write("foobar".as_bytes()));
+ check!(fs::hard_link(&input, &out));
+ assert_eq!(check!(fs::metadata(&out)).len(),
+ check!(fs::metadata(&input)).len());
+ assert_eq!(check!(fs::metadata(&out)).len(),
+ check!(input.metadata()).len());
+ let mut v = Vec::new();
+ check!(check!(File::open(&out)).read_to_end(&mut v));
+ assert_eq!(v, b"foobar".to_vec());
+
+ // can't link to yourself
+ match fs::hard_link(&input, &input) {
+ Ok(..) => panic!("wanted a failure"),
+ Err(..) => {}
+ }
+ // can't link to something that doesn't exist
+ match fs::hard_link(&tmpdir.join("foo"), &tmpdir.join("bar")) {
+ Ok(..) => panic!("wanted a failure"),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn chmod_works() {
+ let tmpdir = tmpdir();
+ let file = tmpdir.join("in.txt");
+
+ check!(File::create(&file));
+ let attr = check!(fs::metadata(&file));
+ assert!(!attr.permissions().readonly());
+ let mut p = attr.permissions();
+ p.set_readonly(true);
+ check!(fs::set_permissions(&file, p.clone()));
+ let attr = check!(fs::metadata(&file));
+ assert!(attr.permissions().readonly());
+
+ match fs::set_permissions(&tmpdir.join("foo"), p) {
+ Ok(..) => panic!("wanted a panic"),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn sync_doesnt_kill_anything() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("in.txt");
+
+ let mut file = check!(File::create(&path));
+ check!(file.sync_all());
+ check!(file.sync_data());
+ check!(file.write(b"foo"));
+ check!(file.sync_all());
+ check!(file.sync_data());
+ }
+
+ #[test]
+ fn truncate_works() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("in.txt");
+
+ let mut file = check!(File::create(&path));
+ check!(file.write(b"foo"));
+ check!(file.sync_all());
+
+ // Do some simple things with truncation
+ assert_eq!(check!(file.metadata()).len(), 3);
+ check!(file.set_len(10));
+ assert_eq!(check!(file.metadata()).len(), 10);
+ check!(file.write(b"bar"));
+ check!(file.sync_all());
+ assert_eq!(check!(file.metadata()).len(), 10);
+
+ let mut v = Vec::new();
+ check!(check!(File::open(&path)).read_to_end(&mut v));
+ assert_eq!(v, b"foobar\0\0\0\0".to_vec());
+
+ // Truncate to a smaller length, don't seek, and then write something.
+ // Ensure that the intermediate zeroes are all filled in (we're seeked
+ // past the end of the file).
+ check!(file.set_len(2));
+ assert_eq!(check!(file.metadata()).len(), 2);
+ check!(file.write(b"wut"));
+ check!(file.sync_all());
+ assert_eq!(check!(file.metadata()).len(), 9);
+ let mut v = Vec::new();
+ check!(check!(File::open(&path)).read_to_end(&mut v));
+ assert_eq!(v, b"fo\0\0\0\0wut".to_vec());
+ }
+
+ #[test]
+ fn open_flavors() {
+ use fs::OpenOptions as OO;
+ fn c<T: Clone>(t: &T) -> T { t.clone() }
+
+ let tmpdir = tmpdir();
+
+ let mut r = OO::new(); r.read(true);
+ let mut w = OO::new(); w.write(true);
+ let mut rw = OO::new(); rw.write(true).read(true);
+
+ match r.open(&tmpdir.join("a")) {
+ Ok(..) => panic!(), Err(..) => {}
+ }
+
+ // Perform each one twice to make sure that it succeeds the second time
+ // (where the file exists)
+ check!(c(&w).create(true).open(&tmpdir.join("b")));
+ assert!(tmpdir.join("b").exists());
+ check!(c(&w).create(true).open(&tmpdir.join("b")));
+ check!(w.open(&tmpdir.join("b")));
+
+ check!(c(&rw).create(true).open(&tmpdir.join("c")));
+ assert!(tmpdir.join("c").exists());
+ check!(c(&rw).create(true).open(&tmpdir.join("c")));
+ check!(rw.open(&tmpdir.join("c")));
+
+ check!(c(&w).append(true).create(true).open(&tmpdir.join("d")));
+ assert!(tmpdir.join("d").exists());
+ check!(c(&w).append(true).create(true).open(&tmpdir.join("d")));
+ check!(c(&w).append(true).open(&tmpdir.join("d")));
+
+ check!(c(&rw).append(true).create(true).open(&tmpdir.join("e")));
+ assert!(tmpdir.join("e").exists());
+ check!(c(&rw).append(true).create(true).open(&tmpdir.join("e")));
+ check!(c(&rw).append(true).open(&tmpdir.join("e")));
+
+ check!(c(&w).truncate(true).create(true).open(&tmpdir.join("f")));
+ assert!(tmpdir.join("f").exists());
+ check!(c(&w).truncate(true).create(true).open(&tmpdir.join("f")));
+ check!(c(&w).truncate(true).open(&tmpdir.join("f")));
+
+ check!(c(&rw).truncate(true).create(true).open(&tmpdir.join("g")));
+ assert!(tmpdir.join("g").exists());
+ check!(c(&rw).truncate(true).create(true).open(&tmpdir.join("g")));
+ check!(c(&rw).truncate(true).open(&tmpdir.join("g")));
+
+ check!(check!(File::create(&tmpdir.join("h"))).write("foo".as_bytes()));
+ check!(r.open(&tmpdir.join("h")));
+ {
+ let mut f = check!(r.open(&tmpdir.join("h")));
+ assert!(f.write("wut".as_bytes()).is_err());
+ }
+ assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
+ {
+ let mut f = check!(c(&w).append(true).open(&tmpdir.join("h")));
+ check!(f.write("bar".as_bytes()));
+ }
+ assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 6);
+ {
+ let mut f = check!(c(&w).truncate(true).open(&tmpdir.join("h")));
+ check!(f.write("bar".as_bytes()));
+ }
+ assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
+ }
+
+ #[test]
+ fn utime() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("a");
+ check!(File::create(&path));
+ // These numbers have to be bigger than the time in the day to account
+ // for timezones Windows in particular will fail in certain timezones
+ // with small enough values
+ check!(fs::set_file_times(&path, 100000, 200000));
+ assert_eq!(check!(path.metadata()).accessed(), 100000);
+ assert_eq!(check!(path.metadata()).modified(), 200000);
+ }
+
+ #[test]
+ fn utime_noexist() {
+ let tmpdir = tmpdir();
+
+ match fs::set_file_times(&tmpdir.join("a"), 100, 200) {
+ Ok(..) => panic!(),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn binary_file() {
+ let mut bytes = [0; 1024];
+ StdRng::new().ok().unwrap().fill_bytes(&mut bytes);
+
+ let tmpdir = tmpdir();
+
+ check!(check!(File::create(&tmpdir.join("test"))).write(&bytes));
+ let mut v = Vec::new();
+ check!(check!(File::open(&tmpdir.join("test"))).read_to_end(&mut v));
+ assert!(v == bytes.as_slice());
+ }
+
+ #[test]
+ fn unlink_readonly() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("file");
+ check!(File::create(&path));
+ let mut perm = check!(fs::metadata(&path)).permissions();
+ perm.set_readonly(true);
+ check!(fs::set_permissions(&path, perm));
+ check!(fs::remove_file(&path));
+ }
+
+ #[test]
+ fn mkdir_trailing_slash() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("file");
+ check!(fs::create_dir_all(&path.join("a/")));
+ }
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![unstable(feature = "tempdir", reason = "needs an RFC before stabilization")]
+
+use prelude::v1::*;
+
+use env;
+use io::{self, Error, ErrorKind};
+use fs;
+use path::{self, PathBuf, AsPath};
+use rand::{thread_rng, Rng};
+
+/// A wrapper for a path to temporary directory implementing automatic
+/// scope-based deletion.
+pub struct TempDir {
+ path: Option<PathBuf>,
+}
+
+// How many times should we (re)try finding an unused random name? It should be
+// enough that an attacker will run out of luck before we run out of patience.
+const NUM_RETRIES: u32 = 1 << 31;
+// How many characters should we include in a random file name? It needs to
+// be enough to dissuade an attacker from trying to preemptively create names
+// of that length, but not so huge that we unnecessarily drain the random number
+// generator of entropy.
+const NUM_RAND_CHARS: uint = 12;
+
+impl TempDir {
+ /// Attempts to make a temporary directory inside of `tmpdir` whose name
+ /// will have the prefix `prefix`. The directory will be automatically
+ /// deleted once the returned wrapper is destroyed.
+ ///
+ /// If no directory can be created, `Err` is returned.
+ #[allow(deprecated)] // rand usage
+ pub fn new_in<P: AsPath + ?Sized>(tmpdir: &P, prefix: &str)
+ -> io::Result<TempDir> {
+ let storage;
+ let mut tmpdir = tmpdir.as_path();
+ if !tmpdir.is_absolute() {
+ let cur_dir = try!(env::current_dir());
+ storage = cur_dir.join(tmpdir);
+ tmpdir = &storage;
+ // return TempDir::new_in(&cur_dir.join(tmpdir), prefix);
+ }
+
+ let mut rng = thread_rng();
+ for _ in 0..NUM_RETRIES {
+ let suffix: String = rng.gen_ascii_chars().take(NUM_RAND_CHARS).collect();
+ let leaf = if prefix.len() > 0 {
+ format!("{}.{}", prefix, suffix)
+ } else {
+ // If we're given an empty string for a prefix, then creating a
+ // directory starting with "." would lead to it being
+ // semi-invisible on some systems.
+ suffix
+ };
+ let path = tmpdir.join(&leaf);
+ match fs::create_dir(&path) {
+ Ok(_) => return Ok(TempDir { path: Some(path) }),
+ Err(ref e) if e.kind() == ErrorKind::PathAlreadyExists => {}
+ Err(e) => return Err(e)
+ }
+ }
+
+ Err(Error::new(ErrorKind::PathAlreadyExists,
+ "too many temporary directories already exist",
+ None))
+ }
+
+ /// Attempts to make a temporary directory inside of `env::temp_dir()` whose
+ /// name will have the prefix `prefix`. The directory will be automatically
+ /// deleted once the returned wrapper is destroyed.
+ ///
+ /// If no directory can be created, `Err` is returned.
+ #[allow(deprecated)]
+ pub fn new(prefix: &str) -> io::Result<TempDir> {
+ TempDir::new_in(&env::temp_dir(), prefix)
+ }
+
+ /// Unwrap the wrapped `std::path::Path` from the `TempDir` wrapper.
+ /// This discards the wrapper so that the automatic deletion of the
+ /// temporary directory is prevented.
+ pub fn into_path(mut self) -> PathBuf {
+ self.path.take().unwrap()
+ }
+
+ /// Access the wrapped `std::path::Path` to the temporary directory.
+ pub fn path(&self) -> &path::Path {
+ self.path.as_ref().unwrap()
+ }
+
+ /// Close and remove the temporary directory
+ ///
+ /// Although `TempDir` removes the directory on drop, in the destructor
+ /// any errors are ignored. To detect errors cleaning up the temporary
+ /// directory, call `close` instead.
+ pub fn close(mut self) -> io::Result<()> {
+ self.cleanup_dir()
+ }
+
+ fn cleanup_dir(&mut self) -> io::Result<()> {
+ match self.path {
+ Some(ref p) => fs::remove_dir_all(p),
+ None => Ok(())
+ }
+ }
+}
+
+impl Drop for TempDir {
+ fn drop(&mut self) {
+ let _ = self.cleanup_dir();
+ }
+}
+
+// the tests for this module need to change the path using change_dir,
+// and this doesn't play nicely with other tests so these unit tests are located
+// in src/test/run-pass/tempfile.rs
}
/// Gets a reference to the underlying reader.
- pub fn get_ref<'a>(&self) -> &R { &self.inner }
+ pub fn get_ref(&self) -> &R { &self.inner }
/// Gets a mutable reference to the underlying reader.
///
if written > 0 {
// NB: would be better expressed as .remove(0..n) if it existed
unsafe {
- ptr::copy_memory(self.buf.as_mut_ptr(),
- self.buf.as_ptr().offset(written as isize),
- len - written);
+ ptr::copy(self.buf.as_mut_ptr(),
+ self.buf.as_ptr().offset(written as isize),
+ len - written);
}
}
self.buf.truncate(len - written);
assert_eq!(writer.write(&[1, 2, 3]), Ok(3));
assert_eq!(writer.write(&[4, 5, 6, 7]), Ok(4));
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
- assert_eq!(&writer.get_ref()[], b);
+ assert_eq!(&writer.get_ref()[..], b);
}
#[test]
assert_eq!(writer.write(&[4, 5, 6, 7]), Ok(4));
assert_eq!(writer.position(), 8);
let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
- assert_eq!(&writer.get_ref()[], b);
+ assert_eq!(&writer.get_ref()[..], b);
assert_eq!(writer.seek(SeekFrom::Start(0)), Ok(0));
assert_eq!(writer.position(), 0);
assert_eq!(writer.write(&[3, 4]), Ok(2));
let b: &[_] = &[3, 4, 2, 3, 4, 5, 6, 7];
- assert_eq!(&writer.get_ref()[], b);
+ assert_eq!(&writer.get_ref()[..], b);
assert_eq!(writer.seek(SeekFrom::Current(1)), Ok(3));
assert_eq!(writer.write(&[0, 1]), Ok(2));
let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 7];
- assert_eq!(&writer.get_ref()[], b);
+ assert_eq!(&writer.get_ref()[..], b);
assert_eq!(writer.seek(SeekFrom::End(-1)), Ok(7));
assert_eq!(writer.write(&[1, 2]), Ok(2));
let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 1, 2];
- assert_eq!(&writer.get_ref()[], b);
+ assert_eq!(&writer.get_ref()[..], b);
assert_eq!(writer.seek(SeekFrom::End(1)), Ok(10));
assert_eq!(writer.write(&[1]), Ok(1));
let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 1, 2, 0, 1];
- assert_eq!(&writer.get_ref()[], b);
+ assert_eq!(&writer.get_ref()[..], b);
}
#[test]
#![feature(unsafe_no_drop_flag)]
#![feature(macro_reexport)]
#![feature(hash)]
+#![feature(unique)]
#![cfg_attr(test, feature(test, rustc_private, env))]
// Don't link to std. We are std.
use net::{SocketAddr, IpAddr};
use sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
+static PORT: AtomicUsize = ATOMIC_USIZE_INIT;
+
pub fn next_test_ip4() -> SocketAddr {
- static PORT: AtomicUsize = ATOMIC_USIZE_INIT;
SocketAddr::new(IpAddr::new_v4(127, 0, 0, 1),
PORT.fetch_add(1, Ordering::SeqCst) as u16 + base_port())
}
pub fn next_test_ip6() -> SocketAddr {
- static PORT: AtomicUsize = ATOMIC_USIZE_INIT;
SocketAddr::new(IpAddr::new_v6(0, 0, 0, 0, 0, 0, 0, 1),
PORT.fetch_add(1, Ordering::SeqCst) as u16 + base_port())
}
let dirs = ["32-opt", "32-nopt", "64-opt", "64-nopt", "64-opt-vg",
"all-opt", "snap3", "dist"];
dirs.iter().enumerate().find(|&(_, dir)| {
- cwd.as_str().unwrap().contains(dir)
+ cwd.to_str().unwrap().contains(dir)
}).map(|p| p.0).unwrap_or(0) as u16 * 1000 + 19600
}
fn read_bytes() {
let mut reader = MemReader::new(vec!(10, 11, 12, 13));
let bytes = reader.read_exact(4).unwrap();
- assert!(bytes == vec!(10, 11, 12, 13));
+ assert_eq!(bytes, [10, 11, 12, 13]);
}
#[test]
count: 0,
};
let bytes = reader.read_exact(4).unwrap();
- assert!(bytes == vec!(10, 11, 12, 13));
+ assert_eq!(bytes, [10, 11, 12, 13]);
}
#[test]
let mut reader = MemReader::new(vec![10, 11, 12, 13]);
let mut buf = vec![8, 9];
assert!(reader.push_at_least(4, 4, &mut buf).is_ok());
- assert!(buf == vec![8, 9, 10, 11, 12, 13]);
+ assert_eq!(buf, [8, 9, 10, 11, 12, 13]);
}
#[test]
};
let mut buf = vec![8, 9];
assert!(reader.push_at_least(4, 4, &mut buf).is_ok());
- assert!(buf == vec![8, 9, 10, 11, 12, 13]);
+ assert_eq!(buf, [8, 9, 10, 11, 12, 13]);
}
#[test]
let mut reader = MemReader::new(vec![10, 11]);
let mut buf = vec![8, 9];
assert!(reader.push_at_least(4, 4, &mut buf).is_err());
- assert!(buf == vec![8, 9, 10, 11]);
+ assert_eq!(buf, [8, 9, 10, 11]);
}
#[test]
};
let mut buf = vec![8, 9];
assert!(reader.push_at_least(4, 4, &mut buf).is_err());
- assert!(buf == vec![8, 9, 10]);
+ assert_eq!(buf, [8, 9, 10]);
}
#[test]
count: 0,
};
let buf = reader.read_to_end().unwrap();
- assert!(buf == vec!(10, 11, 12, 13));
+ assert_eq!(buf, [10, 11, 12, 13]);
}
#[test]
count: 0,
};
let buf = reader.read_to_end().unwrap();
- assert!(buf == vec!(10, 11));
+ assert_eq!(buf, [10, 11]);
}
#[test]
/// let mut w = MemWriter::new();
/// w.write(&[0, 1, 2]);
///
-/// assert_eq!(w.into_inner(), vec!(0, 1, 2));
+/// assert_eq!(w.into_inner(), [0, 1, 2]);
/// ```
#[unstable(feature = "io")]
#[deprecated(since = "1.0.0",
impl Writer for MemWriter {
#[inline]
+ #[allow(deprecated)]
fn write_all(&mut self, buf: &[u8]) -> IoResult<()> {
self.buf.push_all(buf);
Ok(())
///
/// let mut r = MemReader::new(vec!(0, 1, 2));
///
-/// assert_eq!(r.read_to_end().unwrap(), vec!(0, 1, 2));
+/// assert_eq!(r.read_to_end().unwrap(), [0, 1, 2]);
/// ```
pub struct MemReader {
buf: Vec<u8>,
/// let buf = [0, 1, 2, 3];
/// let mut r = BufReader::new(&buf);
///
-/// assert_eq!(r.read_to_end().unwrap(), vec![0, 1, 2, 3]);
+/// assert_eq!(r.read_to_end().unwrap(), [0, 1, 2, 3]);
/// ```
pub struct BufReader<'a> {
buf: &'a [u8],
assert_eq!(&buf[..3], b);
assert!(reader.read(&mut buf).is_err());
let mut reader = MemReader::new(vec!(0, 1, 2, 3, 4, 5, 6, 7));
- assert_eq!(reader.read_until(3).unwrap(), vec!(0, 1, 2, 3));
- assert_eq!(reader.read_until(3).unwrap(), vec!(4, 5, 6, 7));
+ assert_eq!(reader.read_until(3).unwrap(), [0, 1, 2, 3]);
+ assert_eq!(reader.read_until(3).unwrap(), [4, 5, 6, 7]);
assert!(reader.read(&mut buf).is_err());
}
assert_eq!(&buf[..3], b);
assert!(reader.read(&mut buf).is_err());
let mut reader = &mut &*in_buf;
- assert_eq!(reader.read_until(3).unwrap(), vec!(0, 1, 2, 3));
- assert_eq!(reader.read_until(3).unwrap(), vec!(4, 5, 6, 7));
+ assert_eq!(reader.read_until(3).unwrap(), [0, 1, 2, 3]);
+ assert_eq!(reader.read_until(3).unwrap(), [4, 5, 6, 7]);
assert!(reader.read(&mut buf).is_err());
}
assert_eq!(&buf[..3], b);
assert!(reader.read(&mut buf).is_err());
let mut reader = BufReader::new(&in_buf);
- assert_eq!(reader.read_until(3).unwrap(), vec!(0, 1, 2, 3));
- assert_eq!(reader.read_until(3).unwrap(), vec!(4, 5, 6, 7));
+ assert_eq!(reader.read_until(3).unwrap(), [0, 1, 2, 3]);
+ assert_eq!(reader.read_until(3).unwrap(), [4, 5, 6, 7]);
assert!(reader.read(&mut buf).is_err());
}
let mut writer: old_io::IoResult<Vec<u8>> = Ok(Vec::new());
writer.write_all(&[0, 1, 2]).unwrap();
writer.flush().unwrap();
- assert_eq!(writer.unwrap(), vec!(0, 1, 2));
+ assert_eq!(writer.unwrap(), [0, 1, 2]);
}
#[test]
/// deleted once the returned wrapper is destroyed.
///
/// If no directory can be created, `Err` is returned.
+ #[allow(deprecated)]
pub fn new_in(tmpdir: &Path, prefix: &str) -> IoResult<TempDir> {
if !tmpdir.is_absolute() {
- let cur_dir = try!(env::current_dir());
+ let cur_dir = try!(::os::getcwd());
return TempDir::new_in(&cur_dir.join(tmpdir), prefix);
}
/// deleted once the returned wrapper is destroyed.
///
/// If no directory can be created, `Err` is returned.
+ #[allow(deprecated)]
pub fn new(prefix: &str) -> IoResult<TempDir> {
- TempDir::new_in(&env::temp_dir(), prefix)
+ TempDir::new_in(&::os::tmpdir(), prefix)
}
/// Unwrap the wrapped `std::path::Path` from the `TempDir` wrapper.
/// Get a temporary path which could be the location of a unix socket
#[cfg(not(target_os = "ios"))]
+#[allow(deprecated)]
pub fn next_test_unix() -> Path {
let string = next_test_unix_socket();
if cfg!(unix) {
- env::temp_dir().join(string)
+ ::os::tmpdir().join(string)
} else {
Path::new(format!("{}{}", r"\\.\pipe\", string))
}
// FIXME (#9639): This needs to handle non-utf8 paths
let path = env::current_dir().unwrap();
- let path_s = path.as_str().unwrap();
+ let path_s = path.to_str().unwrap();
let mut final_base = base;
let mut r = MemReader::new(vec!(0, 1, 2));
{
let mut r = LimitReader::new(r.by_ref(), 4);
- assert_eq!(vec!(0, 1, 2), r.read_to_end().unwrap());
+ assert_eq!([0, 1, 2], r.read_to_end().unwrap());
}
}
let mut r = MemReader::new(vec!(0, 1, 2));
{
let mut r = LimitReader::new(r.by_ref(), 2);
- assert_eq!(vec!(0, 1), r.read_to_end().unwrap());
+ assert_eq!([0, 1], r.read_to_end().unwrap());
}
- assert_eq!(vec!(2), r.read_to_end().unwrap());
+ assert_eq!([2], r.read_to_end().unwrap());
}
#[test]
assert_eq!(3, r.limit());
assert_eq!(0, r.read_byte().unwrap());
assert_eq!(2, r.limit());
- assert_eq!(vec!(1, 2), r.read_to_end().unwrap());
+ assert_eq!([1, 2], r.read_to_end().unwrap());
assert_eq!(0, r.limit());
}
let mut r = MemReader::new(vec![0, 1, 2, 3, 4, 5]);
let mut r = LimitReader::new(r.by_ref(), 1);
r.consume(2);
- assert_eq!(vec![], r.read_to_end().unwrap());
+ assert_eq!([], r.read_to_end().unwrap());
}
#[test]
let mut s = ZeroReader;
let mut buf = vec![1, 2, 3];
assert_eq!(s.read(&mut buf), Ok(3));
- assert_eq!(vec![0, 0, 0], buf);
+ assert_eq!([0, 0, 0], buf);
}
#[test]
let rs = vec!(MemReader::new(vec!(0, 1)), MemReader::new(vec!()),
MemReader::new(vec!(2, 3)));
let mut r = ChainedReader::new(rs.into_iter());
- assert_eq!(vec!(0, 1, 2, 3), r.read_to_end().unwrap());
+ assert_eq!([0, 1, 2, 3], r.read_to_end().unwrap());
}
#[test]
fn test_tee_reader() {
let mut r = TeeReader::new(MemReader::new(vec!(0, 1, 2)),
Vec::new());
- assert_eq!(vec!(0, 1, 2), r.read_to_end().unwrap());
+ assert_eq!([0, 1, 2], r.read_to_end().unwrap());
let (_, w) = r.into_inner();
- assert_eq!(vec!(0, 1, 2), w);
+ assert_eq!([0, 1, 2], w);
}
#[test]
let mut r = MemReader::new(vec!(0, 1, 2, 3, 4));
let mut w = Vec::new();
copy(&mut r, &mut w).unwrap();
- assert_eq!(vec!(0, 1, 2, 3, 4), w);
+ assert_eq!([0, 1, 2, 3, 4], w);
}
#[test]
use option::Option::{Some, None};
use option::Option;
use old_path::{Path, GenericPath, BytesContainer};
+use path::{self, PathBuf};
use ptr::PtrExt;
use ptr;
use result::Result::{Err, Ok};
#[cfg(unix)] pub use sys::ext as unix;
#[cfg(windows)] pub use sys::ext as windows;
+fn err2old(new: ::io::Error) -> IoError {
+ IoError {
+ kind: ::old_io::OtherIoError,
+ desc: "os error",
+ detail: Some(new.to_string()),
+ }
+}
+
+#[cfg(windows)]
+fn path2new(path: &Path) -> PathBuf {
+ PathBuf::new(path.as_str().unwrap())
+}
+#[cfg(unix)]
+fn path2new(path: &Path) -> PathBuf {
+ use os::unix::prelude::*;
+ PathBuf::new(<OsStr as OsStrExt>::from_bytes(path.as_vec()))
+}
+
+#[cfg(unix)]
+fn path2old(path: &path::Path) -> Path {
+ use os::unix::prelude::*;
+ use ffi::AsOsStr;
+ Path::new(path.as_os_str().as_bytes())
+}
+#[cfg(windows)]
+fn path2old(path: &path::Path) -> Path {
+ Path::new(path.to_str().unwrap())
+}
+
/// Get the number of cores available
pub fn num_cpus() -> uint {
unsafe {
/// let current_working_directory = os::getcwd().unwrap();
/// println!("The current directory is {:?}", current_working_directory.display());
/// ```
-#[deprecated(since = "1.0.0", reason = "renamed to std::env::current_dir")]
#[unstable(feature = "os")]
pub fn getcwd() -> IoResult<Path> {
- env::current_dir()
+ env::current_dir().map_err(err2old).map(|s| path2old(&s))
}
/// Returns a vector of (variable, value) pairs, for all the environment
/// None => println!("{} is not defined in the environment.", key)
/// }
/// ```
-#[deprecated(since = "1.0.0", reason = "renamed to env::split_paths")]
#[unstable(feature = "os")]
pub fn split_paths<T: BytesContainer>(unparsed: T) -> Vec<Path> {
let b = unparsed.container_as_bytes();
let s = str::from_utf8(b).unwrap();
- env::split_paths(s).collect()
+ env::split_paths(s).map(|s| path2old(&s)).collect()
}
/// Joins a collection of `Path`s appropriately for the `PATH`
/// paths.push(Path::new("/home/xyz/bin"));
/// os::setenv(key, os::join_paths(paths.as_slice()).unwrap());
/// ```
-#[deprecated(since = "1.0.0", reason = "renamed to env::join_paths")]
#[unstable(feature = "os")]
pub fn join_paths<T: BytesContainer>(paths: &[T]) -> Result<Vec<u8>, &'static str> {
env::join_paths(paths.iter().map(|s| {
/// None => println!("Unable to get the path of this executable!")
/// };
/// ```
-#[deprecated(since = "1.0.0", reason = "renamed to env::current_exe")]
#[unstable(feature = "os")]
pub fn self_exe_name() -> Option<Path> {
- env::current_exe().ok()
+ env::current_exe().ok().map(|p| path2old(&p))
}
/// Optionally returns the filesystem path to the current executable which is
/// None => println!("Impossible to fetch the path of this executable.")
/// };
/// ```
-#[deprecated(since = "1.0.0", reason = "use env::current_exe + dir_path/pop")]
#[unstable(feature = "os")]
pub fn self_exe_path() -> Option<Path> {
- env::current_exe().ok().map(|mut p| { p.pop(); p })
+ env::current_exe().ok().map(|p| { let mut p = path2old(&p); p.pop(); p })
}
/// Optionally returns the path to the current user's home directory if known.
/// None => println!("Impossible to get your home dir!")
/// }
/// ```
-#[deprecated(since = "1.0.0", reason = "renamed to env::home_dir")]
-#[allow(deprecated)]
#[unstable(feature = "os")]
+#[allow(deprecated)]
pub fn homedir() -> Option<Path> {
#[inline]
#[cfg(unix)]
/// On Windows, returns the value of, in order, the 'TMP', 'TEMP',
/// 'USERPROFILE' environment variable if any are set and not the empty
/// string. Otherwise, tmpdir returns the path to the Windows directory.
-#[deprecated(since = "1.0.0", reason = "renamed to env::temp_dir")]
-#[allow(deprecated)]
#[unstable(feature = "os")]
+#[allow(deprecated)]
pub fn tmpdir() -> Path {
return lookup();
if p.is_absolute() {
Ok(p.clone())
} else {
- env::current_dir().map(|mut cwd| {
+ env::current_dir().map_err(err2old).map(|cwd| {
+ let mut cwd = path2old(&cwd);
cwd.push(p);
cwd
})
/// assert!(os::change_dir(&root).is_ok());
/// println!("Successfully changed working directory to {}!", root.display());
/// ```
-#[deprecated(since = "1.0.0", reason = "renamed to env::set_current_dir")]
#[unstable(feature = "os")]
pub fn change_dir(p: &Path) -> IoResult<()> {
- return sys::os::chdir(p);
+ sys::os::chdir(&path2new(p)).map_err(err2old)
}
/// Returns the platform-specific value of errno
use core::prelude::*;
use ascii::*;
-use borrow::{Borrow, ToOwned, Cow};
+use borrow::{Borrow, IntoCow, ToOwned, Cow};
use cmp;
use iter::{self, IntoIterator};
use mem;
}
}
+impl IntoCow<'static, Path> for PathBuf {
+ fn into_cow(self) -> Cow<'static, Path> {
+ Cow::Owned(self)
+ }
+}
+
+impl<'a> IntoCow<'a, Path> for &'a Path {
+ fn into_cow(self) -> Cow<'a, Path> {
+ Cow::Borrowed(self)
+ }
+}
+
impl ToOwned for Path {
type Owned = PathBuf;
fn to_owned(&self) -> PathBuf { self.to_path_buf() }
);
);
+ #[test]
+ fn into_cow() {
+ use borrow::{Cow, IntoCow};
+
+ let static_path = Path::new("/home/foo");
+ let static_cow_path: Cow<'static, Path> = static_path.into_cow();
+ let pathbuf = PathBuf::new("/home/foo");
+
+ {
+ let path: &Path = &pathbuf;
+ let borrowed_cow_path: Cow<Path> = path.into_cow();
+
+ assert_eq!(static_cow_path, borrowed_cow_path);
+ }
+
+ let owned_cow_path: Cow<'static, Path> = pathbuf.into_cow();
+
+ assert_eq!(static_cow_path, owned_cow_path);
+ }
+
#[test]
#[cfg(unix)]
pub fn test_decompositions_unix() {
pub fn capture() -> Stdio { Stdio(StdioImp::Capture) }
/// The child inherits from the corresponding parent descriptor.
- pub fn inherit() -> Stdio { Stdio(StdioImp::Capture) }
+ pub fn inherit() -> Stdio { Stdio(StdioImp::Inherit) }
/// This stream will be ignored. This is the equivalent of attaching the
/// stream to `/dev/null`
- pub fn null() -> Stdio { Stdio(StdioImp::Capture) }
+ pub fn null() -> Stdio { Stdio(StdioImp::Null) }
}
/// Describes the result of a process after it has terminated.
extern crate libc;
use old_io::{IoResult};
- use marker::Sync;
use mem;
use os;
use rand::Rng;
#[repr(C)]
struct SecRandom;
- unsafe impl Sync for *const SecRandom {}
-
#[allow(non_upper_case_globals)]
- static kSecRandomDefault: *const SecRandom = 0 as *const SecRandom;
+ const kSecRandomDefault: *const SecRandom = 0 as *const SecRandom;
#[link(name = "Security", kind = "framework")]
extern "C" {
#[stable(feature = "rust1", since = "1.0.0")]
pub struct Condvar { inner: Box<StaticCondvar> }
-unsafe impl Send for Condvar {}
-unsafe impl Sync for Condvar {}
-
/// Statically allocated condition variables.
///
/// This structure is identical to `Condvar` except that it is suitable for use
mutex: AtomicUsize,
}
-unsafe impl Send for StaticCondvar {}
-unsafe impl Sync for StaticCondvar {}
-
/// Constant initializer for a statically allocated condition variable.
#[unstable(feature = "std_misc",
reason = "may be merged with Condvar in the future")]
pub use self::poison::{PoisonError, TryLockError, TryLockResult, LockResult};
pub use self::future::Future;
+#[allow(deprecated)]
pub use self::task_pool::TaskPool;
pub mod mpsc;
/// contains the data being sent as a payload so it can be recovered.
#[stable(feature = "rust1", since = "1.0.0")]
#[derive(PartialEq, Eq, Clone, Copy)]
-pub struct SendError<T>(pub T);
+pub struct SendError<T>(#[stable(feature = "rust1", since = "1.0.0")] pub T);
/// An error returned from the `recv` function on a `Receiver`.
///
use ops::{Deref, DerefMut};
use sync::poison::{self, TryLockError, TryLockResult, LockResult};
use sys_common::mutex as sys;
+use fmt;
/// A mutual exclusion primitive useful for protecting shared data
///
poison: poison::Flag,
}
-unsafe impl Sync for StaticMutex {}
-
/// An RAII implementation of a "scoped lock" of a mutex. When this structure is
/// dropped (falls out of scope), the lock will be unlocked.
///
}
}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl<T: fmt::Debug + Send + 'static> fmt::Debug for Mutex<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ match self.try_lock() {
+ Ok(guard) => write!(f, "Mutex {{ data: {:?} }}", *guard),
+ Err(TryLockError::Poisoned(err)) => {
+ write!(f, "Mutex {{ data: Poisoned({:?}) }}", **err.get_ref())
+ },
+ Err(TryLockError::WouldBlock) => write!(f, "Mutex {{ <locked> }}")
+ }
+ }
+}
+
struct Dummy(UnsafeCell<()>);
unsafe impl Sync for Dummy {}
static DUMMY: Dummy = Dummy(UnsafeCell { value: () });
//! This primitive is meant to be used to run one-time initialization. An
//! example use case would be for initializing an FFI library.
+use prelude::v1::*;
+
use isize;
-use marker::Sync;
-use mem::drop;
-use ops::FnOnce;
use sync::atomic::{AtomicIsize, Ordering, ATOMIC_ISIZE_INIT};
use sync::{StaticMutex, MUTEX_INIT};
lock_cnt: AtomicIsize,
}
-unsafe impl Sync for Once {}
-
/// Initialization value for static `Once` values.
#[stable(feature = "rust1", since = "1.0.0")]
pub const ONCE_INIT: Once = Once {
use thread;
pub struct Flag { failed: UnsafeCell<bool> }
+
+// This flag is only ever accessed with a lock previously held. Note that this
+// a totally private structure.
+unsafe impl Send for Flag {}
+unsafe impl Sync for Flag {}
+
pub const FLAG_INIT: Flag = Flag { failed: UnsafeCell { value: false } };
impl Flag {
use ops::{Deref, DerefMut};
use sync::poison::{self, LockResult, TryLockError, TryLockResult};
use sys_common::rwlock as sys;
+use fmt;
/// A reader-writer lock
///
poison: poison::Flag,
}
-unsafe impl Send for StaticRwLock {}
-unsafe impl Sync for StaticRwLock {}
-
/// Constant initialization for a statically-initialized rwlock.
#[unstable(feature = "std_misc",
reason = "may be merged with RwLock in the future")]
}
}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl<T: fmt::Debug + Send + Sync> fmt::Debug for RwLock<T> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ match self.try_read() {
+ Ok(guard) => write!(f, "RwLock {{ data: {:?} }}", *guard),
+ Err(TryLockError::Poisoned(err)) => {
+ write!(f, "RwLock {{ data: Poisoned({:?}) }}", **err.get_ref())
+ },
+ Err(TryLockError::WouldBlock) => write!(f, "RwLock {{ <locked> }}")
+ }
+ }
+}
+
struct Dummy(UnsafeCell<()>);
unsafe impl Sync for Dummy {}
static DUMMY: Dummy = Dummy(UnsafeCell { value: () });
//! Abstraction of a thread pool for basic parallelism.
-#![unstable(feature = "std_misc",
- reason = "the semantics of a failing task and whether a thread is \
- re-attached to a thread pool are somewhat unclear, and the \
- utility of this type in `std::sync` is questionable with \
- respect to the jobs of other primitives")]
+#![deprecated(since = "1.0.0",
+ reason = "This kind of API needs some time to bake in \
+ crates.io. This functionality is available through \
+ https://crates.io/crates/threadpool")]
+#![unstable(feature = "std_misc")]
+
+#![allow(deprecated)]
use core::prelude::*;
#[cfg(windows)] use libc::WSAEWOULDBLOCK as WOULDBLOCK;
// Make sure the call to connect() doesn't block
- try!(set_nonblocking(fd, true));
+ set_nonblocking(fd, true);
let ret = match unsafe { libc::connect(fd, addrp, len) } {
// If the connection is in progress, then we need to wait for it to
};
// be sure to turn blocking I/O back on
- try!(set_nonblocking(fd, false));
+ set_nonblocking(fd, false);
return ret;
#[cfg(unix)]
#[unsafe_destructor]
impl<'a> Drop for Guard<'a> {
fn drop(&mut self) {
- assert!(set_nonblocking(self.fd, false).is_ok());
+ set_nonblocking(self.fd, false);
}
}
fd: self.fd(),
guard: self.inner.lock.lock().unwrap(),
};
- assert!(set_nonblocking(self.fd(), true).is_ok());
+ set_nonblocking(self.fd(), true);
ret
}
fd: self.fd(),
guard: self.inner.lock.lock().unwrap(),
};
- assert!(set_nonblocking(self.fd(), true).is_ok());
+ set_nonblocking(self.fd(), true);
ret
}
storagep,
&mut addrlen) as libc::c_int
}));
- sockaddr_to_addr(&storage, addrlen as uint).and_then(|addr| {
- Ok((n as uint, addr))
- })
+ Ok((n as uint, sockaddr_to_addr(&storage, addrlen as uint).unwrap()))
}
pub fn send_to(&mut self, buf: &[u8], dst: SocketAddr) -> IoResult<()> {
};
let n = try!(write(fd, self.write_deadline, buf, false, dolock, dowrite));
- if n != buf.len() {
- Err(short_write(n, "couldn't send entire packet at once"))
- } else {
- Ok(())
- }
+ assert!(n == buf.len(), "UDP packet not completely written.");
+ Ok(())
}
pub fn join_multicast(&mut self, multi: IpAddr) -> IoResult<()> {
string.code_points().map(|c| c.to_char()).collect::<Vec<_>>()
}
let mut string = Wtf8Buf::from_str("é ");
- assert_eq!(cp(&string), vec![Some('é'), Some(' ')]);
+ assert_eq!(cp(&string), [Some('é'), Some(' ')]);
string.push(c(0xD83D));
- assert_eq!(cp(&string), vec![Some('é'), Some(' '), None]);
+ assert_eq!(cp(&string), [Some('é'), Some(' '), None]);
string.push(c(0xDCA9));
- assert_eq!(cp(&string), vec![Some('é'), Some(' '), Some('💩')]);
+ assert_eq!(cp(&string), [Some('é'), Some(' '), Some('💩')]);
}
#[test]
/// all unix platforms we support right now, so it at least gets the job done.
use prelude::v1::*;
+use os::unix::prelude::*;
-use ffi::CStr;
+use ffi::{CStr, AsOsStr};
use old_io::IoResult;
use libc;
use mem;
};
let filename = match selfname {
Some(path) => {
- let bytes = path.as_vec();
+ let bytes = path.as_os_str().as_bytes();
if bytes.len() < LAST_FILENAME.len() {
let i = bytes.iter();
for (slot, val) in LAST_FILENAME.iter_mut().zip(i) {
// option. This file may not be copied, modified, or distributed
// except according to those terms.
+use prelude::v1::*;
+
use cell::UnsafeCell;
use libc;
use ptr;
-use std::option::Option::{Some, None};
use sys::mutex::{self, Mutex};
use sys::time;
use sys::sync as ffi;
pub struct Condvar { inner: UnsafeCell<ffi::pthread_cond_t> }
+unsafe impl Send for Condvar {}
+unsafe impl Sync for Condvar {}
+
pub const CONDVAR_INIT: Condvar = Condvar {
inner: UnsafeCell { value: ffi::PTHREAD_COND_INITIALIZER },
};
// Unix-specific extensions to `Permissions`
pub trait PermissionsExt {
+ fn mode(&self) -> i32;
fn set_mode(&mut self, mode: i32);
}
impl PermissionsExt for Permissions {
+ fn mode(&self) -> i32 { self.as_inner().mode() }
+
fn set_mode(&mut self, mode: i32) {
*self = FromInner::from_inner(FromInner::from_inner(mode));
}
// FileStat times are in milliseconds
fn mktime(secs: u64, nsecs: u64) -> u64 { secs * 1000 + nsecs / 1000000 }
- #[cfg(target_os = "bitrig")]
- fn ctime(stat: &libc::stat) -> u64 {
- mktime(stat.st_ctim.tv_sec as u64, stat.st_ctim.tv_nsec as u64)
- }
- #[cfg(not(target_os = "bitrig"))]
fn ctime(stat: &libc::stat) -> u64 {
mktime(stat.st_ctime as u64, stat.st_ctime_nsec as u64)
}
- #[cfg(target_os = "bitrig")]
- fn atime(stat: &libc::stat) -> u64 {
- mktime(stat.st_atim.tv_sec as u64, stat.st_atim.tv_nsec as u64)
- }
- #[cfg(not(target_os = "bitrig"))]
fn atime(stat: &libc::stat) -> u64 {
mktime(stat.st_atime as u64, stat.st_atime_nsec as u64)
}
- #[cfg(target_os = "bitrig")]
- fn mtime(stat: &libc::stat) -> u64 {
- mktime(stat.st_mtim.tv_sec as u64, stat.st_mtim.tv_nsec as u64)
- }
- #[cfg(not(target_os = "bitrig"))]
fn mtime(stat: &libc::stat) -> u64 {
mktime(stat.st_mtime as u64, stat.st_mtime_nsec as u64)
}
self.mode |= 0o222;
}
}
+ pub fn mode(&self) -> i32 { self.mode as i32 }
}
impl FromInner<i32> for FilePermissions {
err == libc::EWOULDBLOCK as i32 || err == libc::EAGAIN as i32
}
-pub fn set_nonblocking(fd: sock_t, nb: bool) -> IoResult<()> {
+pub fn set_nonblocking(fd: sock_t, nb: bool) {
let set = nb as libc::c_int;
- mkerr_libc(retry(|| unsafe { c::ioctl(fd, c::FIONBIO, &set) }))
+ mkerr_libc(retry(|| unsafe { c::ioctl(fd, c::FIONBIO, &set) })).unwrap();
}
// nothing needed on unix platforms
// option. This file may not be copied, modified, or distributed
// except according to those terms.
+use prelude::v1::*;
+
use cell::UnsafeCell;
-use marker::Sync;
use sys::sync as ffi;
use sys_common::mutex;
inner: UnsafeCell { value: ffi::PTHREAD_MUTEX_INITIALIZER },
};
+unsafe impl Send for Mutex {}
unsafe impl Sync for Mutex {}
impl Mutex {
use error::Error as StdError;
use ffi::{CString, CStr, OsString, OsStr, AsOsStr};
use fmt;
+use io;
use iter;
use libc::{self, c_int, c_char, c_void};
use mem;
-use io;
-use old_io::{IoResult, IoError, fs};
+use old_io::{IoError, IoResult};
use ptr;
+use path::{self, PathBuf};
use slice;
use str;
use sys::c;
const BUF_BYTES: usize = 2048;
const TMPBUF_SZ: usize = 128;
+fn bytes2path(b: &[u8]) -> PathBuf {
+ PathBuf::new(<OsStr as OsStrExt>::from_bytes(b))
+}
+
+fn os2path(os: OsString) -> PathBuf {
+ bytes2path(os.as_bytes())
+}
+
/// Returns the platform-specific value of errno
pub fn errno() -> i32 {
#[cfg(any(target_os = "macos",
}
}
-pub fn getcwd() -> IoResult<Path> {
+pub fn getcwd() -> io::Result<PathBuf> {
let mut buf = [0 as c_char; BUF_BYTES];
unsafe {
if libc::getcwd(buf.as_mut_ptr(), buf.len() as libc::size_t).is_null() {
- Err(IoError::last_error())
+ Err(io::Error::last_os_error())
} else {
- Ok(Path::new(CStr::from_ptr(buf.as_ptr()).to_bytes()))
+ Ok(bytes2path(CStr::from_ptr(buf.as_ptr()).to_bytes()))
}
}
}
-pub fn chdir(p: &Path) -> IoResult<()> {
- let p = CString::new(p.as_vec()).unwrap();
+pub fn chdir(p: &path::Path) -> io::Result<()> {
+ let p = try!(CString::new(p.as_os_str().as_bytes()));
unsafe {
match libc::chdir(p.as_ptr()) == (0 as c_int) {
true => Ok(()),
- false => Err(IoError::last_error()),
+ false => Err(io::Error::last_os_error()),
}
}
}
pub struct SplitPaths<'a> {
iter: iter::Map<slice::Split<'a, u8, fn(&u8) -> bool>,
- fn(&'a [u8]) -> Path>,
+ fn(&'a [u8]) -> PathBuf>,
}
pub fn split_paths<'a>(unparsed: &'a OsStr) -> SplitPaths<'a> {
let unparsed = unparsed.as_bytes();
SplitPaths {
iter: unparsed.split(is_colon as fn(&u8) -> bool)
- .map(Path::new as fn(&'a [u8]) -> Path)
+ .map(bytes2path as fn(&'a [u8]) -> PathBuf)
}
}
impl<'a> Iterator for SplitPaths<'a> {
- type Item = Path;
- fn next(&mut self) -> Option<Path> { self.iter.next() }
+ type Item = PathBuf;
+ fn next(&mut self) -> Option<PathBuf> { self.iter.next() }
fn size_hint(&self) -> (usize, Option<usize>) { self.iter.size_hint() }
}
}
#[cfg(target_os = "freebsd")]
-pub fn current_exe() -> IoResult<Path> {
+pub fn current_exe() -> io::Result<PathBuf> {
unsafe {
use libc::funcs::bsd44::*;
use libc::consts::os::extra::*;
let err = sysctl(mib.as_mut_ptr(), mib.len() as ::libc::c_uint,
ptr::null_mut(), &mut sz, ptr::null_mut(),
0 as libc::size_t);
- if err != 0 { return Err(IoError::last_error()); }
- if sz == 0 { return Err(IoError::last_error()); }
+ if err != 0 { return Err(io::Error::last_os_error()); }
+ if sz == 0 { return Err(io::Error::last_os_error()); }
let mut v: Vec<u8> = Vec::with_capacity(sz as uint);
let err = sysctl(mib.as_mut_ptr(), mib.len() as ::libc::c_uint,
v.as_mut_ptr() as *mut libc::c_void, &mut sz,
ptr::null_mut(), 0 as libc::size_t);
- if err != 0 { return Err(IoError::last_error()); }
- if sz == 0 { return Err(IoError::last_error()); }
+ if err != 0 { return Err(io::Error::last_os_error()); }
+ if sz == 0 { return Err(io::Error::last_os_error()); }
v.set_len(sz as uint - 1); // chop off trailing NUL
- Ok(Path::new(v))
+ Ok(PathBuf::new::<OsString>(&OsStringExt::from_vec(v)))
}
}
#[cfg(target_os = "dragonfly")]
-pub fn current_exe() -> IoResult<Path> {
- fs::readlink(&Path::new("/proc/curproc/file"))
+pub fn current_exe() -> io::Result<PathBuf> {
+ ::fs::read_link("/proc/curproc/file")
}
#[cfg(any(target_os = "bitrig", target_os = "openbsd"))]
-pub fn current_exe() -> IoResult<Path> {
+pub fn current_exe() -> io::Result<PathBuf> {
use sync::{StaticMutex, MUTEX_INIT};
static LOCK: StaticMutex = MUTEX_INIT;
unsafe {
let v = rust_current_exe();
if v.is_null() {
- Err(IoError::last_error())
+ Err(io::Error::last_os_error())
} else {
- Ok(Path::new(CStr::from_ptr(v).to_bytes().to_vec()))
+ let vec = CStr::from_ptr(v).to_bytes().to_vec();
+ Ok(PathBuf::new::<OsString>(&OsStringExt::from_vec(vec)))
}
}
}
#[cfg(any(target_os = "linux", target_os = "android"))]
-pub fn current_exe() -> IoResult<Path> {
- fs::readlink(&Path::new("/proc/self/exe"))
+pub fn current_exe() -> io::Result<PathBuf> {
+ ::fs::read_link("/proc/self/exe")
}
#[cfg(any(target_os = "macos", target_os = "ios"))]
-pub fn current_exe() -> IoResult<Path> {
+pub fn current_exe() -> io::Result<PathBuf> {
unsafe {
use libc::funcs::extra::_NSGetExecutablePath;
let mut sz: u32 = 0;
_NSGetExecutablePath(ptr::null_mut(), &mut sz);
- if sz == 0 { return Err(IoError::last_error()); }
+ if sz == 0 { return Err(io::Error::last_os_error()); }
let mut v: Vec<u8> = Vec::with_capacity(sz as uint);
let err = _NSGetExecutablePath(v.as_mut_ptr() as *mut i8, &mut sz);
- if err != 0 { return Err(IoError::last_error()); }
+ if err != 0 { return Err(io::Error::last_os_error()); }
v.set_len(sz as uint - 1); // chop off trailing NUL
- Ok(Path::new(v))
+ Ok(PathBuf::new::<OsString>(&OsStringExt::from_vec(v)))
}
}
}
}
-pub fn temp_dir() -> Path {
- getenv("TMPDIR".as_os_str()).map(|p| Path::new(p.into_vec())).unwrap_or_else(|| {
+pub fn temp_dir() -> PathBuf {
+ getenv("TMPDIR".as_os_str()).map(os2path).unwrap_or_else(|| {
if cfg!(target_os = "android") {
- Path::new("/data/local/tmp")
+ PathBuf::new("/data/local/tmp")
} else {
- Path::new("/tmp")
+ PathBuf::new("/tmp")
}
})
}
-pub fn home_dir() -> Option<Path> {
+pub fn home_dir() -> Option<PathBuf> {
return getenv("HOME".as_os_str()).or_else(|| unsafe {
fallback()
- }).map(|os| {
- Path::new(os.into_vec())
- });
+ }).map(os2path);
#[cfg(any(target_os = "android",
target_os = "ios"))]
fd: self.fd(),
guard: unsafe { self.inner.lock.lock().unwrap() },
};
- assert!(set_nonblocking(self.fd(), true).is_ok());
+ set_nonblocking(self.fd(), true);
ret
}
_ => {
let (reader, writer) = try!(unsafe { sys::os::pipe() });
- try!(set_nonblocking(reader.fd(), true));
- try!(set_nonblocking(writer.fd(), true));
- try!(set_nonblocking(self.fd(), true));
+ set_nonblocking(reader.fd(), true);
+ set_nonblocking(writer.fd(), true);
+ set_nonblocking(self.fd(), true);
Ok(UnixAcceptor {
inner: Arc::new(AcceptorInner {
listener: self,
K: BytesContainer + Eq + Hash, V: BytesContainer
{
use libc::funcs::posix88::unistd::{fork, dup2, close, chdir, execvp};
- use libc::funcs::bsd44::getdtablesize;
mod rustrt {
extern {
assert_eq!(ret, 0);
}
+ #[cfg(all(target_os = "android", target_arch = "aarch64"))]
+ unsafe fn getdtablesize() -> c_int {
+ libc::sysconf(libc::consts::os::sysconf::_SC_OPEN_MAX) as c_int
+ }
+ #[cfg(not(all(target_os = "android", target_arch = "aarch64")))]
+ unsafe fn getdtablesize() -> c_int {
+ libc::funcs::bsd44::getdtablesize()
+ }
+
let dirp = cfg.cwd().map(|c| c.as_ptr()).unwrap_or(ptr::null());
// temporary until unboxed closures land
unsafe {
let mut pipes = [0; 2];
assert_eq!(libc::pipe(pipes.as_mut_ptr()), 0);
- set_nonblocking(pipes[0], true).ok().unwrap();
- set_nonblocking(pipes[1], true).ok().unwrap();
+ set_nonblocking(pipes[0], true);
+ set_nonblocking(pipes[1], true);
WRITE_FD = pipes[1];
let mut old: c::sigaction = mem::zeroed();
fn waitpid_helper(input: libc::c_int,
messages: Receiver<Req>,
(read_fd, old): (libc::c_int, c::sigaction)) {
- set_nonblocking(input, true).ok().unwrap();
+ set_nonblocking(input, true);
let mut set: c::fd_set = unsafe { mem::zeroed() };
let mut tv: libc::timeval;
let mut active = Vec::<(libc::pid_t, Sender<ProcessExit>, u64)>::new();
-> io::Result<Process>
{
use libc::funcs::posix88::unistd::{fork, dup2, close, chdir, execvp};
- use libc::funcs::bsd44::getdtablesize;
mod rustrt {
extern {
assert_eq!(ret, 0);
}
+ #[cfg(all(target_os = "android", target_arch = "aarch64"))]
+ unsafe fn getdtablesize() -> c_int {
+ libc::sysconf(libc::consts::os::sysconf::_SC_OPEN_MAX) as c_int
+ }
+
+ #[cfg(not(all(target_os = "android", target_arch = "aarch64")))]
+ unsafe fn getdtablesize() -> c_int {
+ libc::funcs::bsd44::getdtablesize()
+ }
+
let dirp = cfg.cwd.as_ref().map(|c| c.as_ptr()).unwrap_or(ptr::null());
with_envp(cfg.env.as_ref(), |envp: *const c_void| {
target_os = "ios",
target_os = "freebsd",
target_os = "dragonfly",
+ target_os = "bitrig",
target_os = "openbsd"))]
mod imp {
pub fn WIFEXITED(status: i32) -> bool { (status & 0x7f) == 0 }
// option. This file may not be copied, modified, or distributed
// except according to those terms.
+use prelude::v1::*;
+
use cell::UnsafeCell;
use sys::sync as ffi;
inner: UnsafeCell { value: ffi::PTHREAD_RWLOCK_INITIALIZER },
};
+unsafe impl Send for RWLock {}
+unsafe impl Sync for RWLock {}
+
impl RWLock {
#[inline]
pub unsafe fn new() -> RWLock {
-1 => Err(last_net_error()),
_ => {
let (reader, writer) = try!(unsafe { sys::os::pipe() });
- try!(set_nonblocking(reader.fd(), true));
- try!(set_nonblocking(writer.fd(), true));
- try!(set_nonblocking(self.fd(), true));
+ set_nonblocking(reader.fd(), true);
+ set_nonblocking(writer.fd(), true);
+ set_nonblocking(self.fd(), true);
Ok(TcpAcceptor {
inner: Arc::new(AcceptorInner {
listener: self,
// option. This file may not be copied, modified, or distributed
// except according to those terms.
+use prelude::v1::*;
+
use cell::UnsafeCell;
use libc::{self, DWORD};
use os;
pub struct Condvar { inner: UnsafeCell<ffi::CONDITION_VARIABLE> }
+unsafe impl Send for Condvar {}
+unsafe impl Sync for Condvar {}
+
pub const CONDVAR_INIT: Condvar = Condvar {
inner: UnsafeCell { value: ffi::CONDITION_VARIABLE_INIT }
};
buf as *const u16,
sz - 1,
libc::VOLUME_NAME_DOS)
- }, super::os2path);
+ }, |data| {
+ Path::new(String::from_utf16(data).unwrap())
+ });
assert!(unsafe { libc::CloseHandle(handle) } != 0);
return ret;
}
use prelude::v1::*;
-use ffi::OsStr;
+use ffi::{OsStr, OsString};
use io::{self, ErrorKind};
use libc;
use mem;
-use old_io::{self, IoResult, IoError};
use num::Int;
-use os::windows::OsStrExt;
+use old_io::{self, IoResult, IoError};
+use os::windows::{OsStrExt, OsStringExt};
+use path::PathBuf;
use sync::{Once, ONCE_INIT};
macro_rules! helper_init { (static $name:ident: Helper<$m:ty>) => (
err == libc::WSAEWOULDBLOCK as i32
}
-pub fn set_nonblocking(fd: sock_t, nb: bool) -> IoResult<()> {
+pub fn set_nonblocking(fd: sock_t, nb: bool) {
let mut set = nb as libc::c_ulong;
- if unsafe { c::ioctlsocket(fd, c::FIONBIO, &mut set) != 0 } {
- Err(last_error())
- } else {
- Ok(())
+ if unsafe { c::ioctlsocket(fd, c::FIONBIO, &mut set) } != 0 {
+ // The above function should not return an error unless we passed it
+ // invalid parameters. Panic on errors.
+ panic!("set_nonblocking called with invalid parameters: {}", last_error());
}
}
fill_utf16_buf_base(f1, f2).map_err(|()| io::Error::last_os_error())
}
-fn os2path(s: &[u16]) -> Path {
- // FIXME: this should not be a panicking conversion (aka path reform)
- Path::new(String::from_utf16(s).unwrap())
+fn os2path(s: &[u16]) -> PathBuf {
+ let os = <OsString as OsStringExt>::from_wide(s);
+ // FIXME(#22751) should consume `os`
+ PathBuf::new(&os)
}
pub fn truncate_utf16_at_nul<'a>(v: &'a [u16]) -> &'a [u16] {
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-use marker::Sync;
+use prelude::v1::*;
+
use cell::UnsafeCell;
use sys::sync as ffi;
inner: UnsafeCell { value: ffi::SRWLOCK_INIT }
};
+unsafe impl Send for Mutex {}
unsafe impl Sync for Mutex {}
#[inline]
// So you might be asking why we're using SRWLock instead of CriticalSection?
//
-// 1. SRWLock is several times faster than CriticalSection according to benchmarks performed on both
-// Windows 8 and Windows 7.
+// 1. SRWLock is several times faster than CriticalSection according to
+// benchmarks performed on both Windows 8 and Windows 7.
//
-// 2. CriticalSection allows recursive locking while SRWLock deadlocks. The Unix implementation
-// deadlocks so consistency is preferred. See #19962 for more details.
+// 2. CriticalSection allows recursive locking while SRWLock deadlocks. The Unix
+// implementation deadlocks so consistency is preferred. See #19962 for more
+// details.
//
-// 3. While CriticalSection is fair and SRWLock is not, the current Rust policy is there there are
-// no guarantees of fairness.
+// 3. While CriticalSection is fair and SRWLock is not, the current Rust policy
+// is there there are no guarantees of fairness.
impl Mutex {
#[inline]
pub struct Socket(libc::SOCKET);
+/// Checks whether the Windows socket interface has been started already, and
+/// if not, starts it.
pub fn init() {
static START: Once = ONCE_INIT;
});
}
+/// Returns the last error from the Windows socket interface.
fn last_error() -> io::Error {
io::Error::from_os_error(unsafe { c::WSAGetLastError() })
}
+/// Checks if the signed integer is the Windows constant `SOCKET_ERROR` (-1)
+/// and if so, returns the last error from the Windows socket interface. . This
+/// function must be called before another call to the socket API is made.
+///
+/// FIXME: generics needed?
pub fn cvt<T: SignedInt>(t: T) -> io::Result<T> {
let one: T = Int::one();
if t == -one {
}
}
+/// Provides the functionality of `cvt` for the return values of `getaddrinfo`
+/// and similar, meaning that they return an error if the return value is 0.
pub fn cvt_gai(err: c_int) -> io::Result<()> {
if err == 0 { return Ok(()) }
cvt(err).map(|_| ())
}
+/// Provides the functionality of `cvt` for a closure.
pub fn cvt_r<T: SignedInt, F>(mut f: F) -> io::Result<T> where F: FnMut() -> T {
cvt(f())
}
impl Drop for Socket {
fn drop(&mut self) {
- unsafe { let _ = libc::closesocket(self.0); }
+ unsafe { cvt(libc::closesocket(self.0)).unwrap(); }
}
}
use error::Error as StdError;
use ffi::{OsString, OsStr, AsOsStr};
use fmt;
-use ops::Range;
+use io;
use libc::types::os::arch::extra::LPWCH;
use libc::{self, c_int, c_void};
use mem;
use old_io::{IoError, IoResult};
+use ops::Range;
+use path::{self, PathBuf};
use ptr;
use slice;
use sys::c;
}
impl<'a> Iterator for SplitPaths<'a> {
- type Item = Path;
- fn next(&mut self) -> Option<Path> {
+ type Item = PathBuf;
+ fn next(&mut self) -> Option<PathBuf> {
// On Windows, the PATH environment variable is semicolon separated.
// Double quotes are used as a way of introducing literal semicolons
// (since c:\some;dir is a valid Windows path). Double quotes are not
if !must_yield && in_progress.is_empty() {
None
} else {
- Some(super::os2path(&in_progress[..]))
+ Some(super::os2path(&in_progress))
}
}
}
fn description(&self) -> &str { "failed to join paths" }
}
-pub fn current_exe() -> IoResult<Path> {
- super::fill_utf16_buf(|buf, sz| unsafe {
+pub fn current_exe() -> io::Result<PathBuf> {
+ super::fill_utf16_buf_new(|buf, sz| unsafe {
libc::GetModuleFileNameW(ptr::null_mut(), buf, sz)
}, super::os2path)
}
-pub fn getcwd() -> IoResult<Path> {
- super::fill_utf16_buf(|buf, sz| unsafe {
+pub fn getcwd() -> io::Result<PathBuf> {
+ super::fill_utf16_buf_new(|buf, sz| unsafe {
libc::GetCurrentDirectoryW(sz, buf)
}, super::os2path)
}
-pub fn chdir(p: &Path) -> IoResult<()> {
+pub fn chdir(p: &path::Path) -> io::Result<()> {
let mut p = p.as_os_str().encode_wide().collect::<Vec<_>>();
p.push(0);
unsafe {
match libc::SetCurrentDirectoryW(p.as_ptr()) != (0 as libc::BOOL) {
true => Ok(()),
- false => Err(IoError::last_error()),
+ false => Err(io::Error::last_os_error()),
}
}
}
pub fn getenv(k: &OsStr) -> Option<OsString> {
let k = super::to_utf16_os(k);
- super::fill_utf16_buf(|buf, sz| unsafe {
+ super::fill_utf16_buf_new(|buf, sz| unsafe {
libc::GetEnvironmentVariableW(k.as_ptr(), buf, sz)
}, |buf| {
OsStringExt::from_wide(buf)
}
}
-pub fn temp_dir() -> Path {
- super::fill_utf16_buf(|buf, sz| unsafe {
+pub fn temp_dir() -> PathBuf {
+ super::fill_utf16_buf_new(|buf, sz| unsafe {
c::GetTempPathW(sz, buf)
}, super::os2path).unwrap()
}
-pub fn home_dir() -> Option<Path> {
+pub fn home_dir() -> Option<PathBuf> {
getenv("HOME".as_os_str()).or_else(|| {
getenv("USERPROFILE".as_os_str())
}).map(|os| {
- // FIXME: OsString => Path
- Path::new(os.to_str().unwrap())
+ // FIXME(#22751) should consume `os`
+ PathBuf::new(&os)
}).or_else(|| unsafe {
let me = c::GetCurrentProcess();
let mut token = ptr::null_mut();
return None
}
let _handle = RawHandle::new(token);
- super::fill_utf16_buf(|buf, mut sz| {
+ super::fill_utf16_buf_new(|buf, mut sz| {
match c::GetUserProfileDirectoryW(token, buf, &mut sz) {
0 if libc::GetLastError() != 0 => 0,
0 => sz,
use env;
use ffi::{OsString, OsStr};
use fmt;
+use fs;
use io::{self, Error};
use libc::{self, c_void};
-use old_io::fs;
-use old_path;
use os::windows::OsStrExt;
use ptr;
use sync::{StaticMutex, MUTEX_INIT};
+use sys::handle::Handle;
use sys::pipe2::AnonPipe;
use sys::{self, cvt};
-use sys::handle::Handle;
use sys_common::{AsInner, FromInner};
////////////////////////////////////////////////////////////////////////////////
for path in split_paths(&v) {
let path = path.join(cfg.program.to_str().unwrap())
.with_extension(env::consts::EXE_EXTENSION);
- // FIXME: update with new fs module once it lands
- if fs::stat(&old_path::Path::new(&path)).is_ok() {
- return Some(OsString::from_str(path.as_str().unwrap()))
+ if fs::metadata(&path).is_ok() {
+ return Some(path.into_os_string())
}
}
break
// option. This file may not be copied, modified, or distributed
// except according to those terms.
+use prelude::v1::*;
+
use cell::UnsafeCell;
use sys::sync as ffi;
inner: UnsafeCell { value: ffi::SRWLOCK_INIT }
};
+unsafe impl Send for RWLock {}
+unsafe impl Sync for RWLock {}
+
impl RWLock {
#[inline]
pub unsafe fn read(&self) {
c::WSAEventSelect(socket, events[1], 0)
};
if ret != 0 { return Err(last_net_error()) }
- try!(set_nonblocking(socket, false));
+ set_nonblocking(socket, false);
return Ok(stream)
}
}
use time::Duration;
use sync::{Once, ONCE_INIT};
+const NANOS_PER_SEC: i64 = 1_000_000_000;
+
pub struct SteadyTime {
t: libc::LARGE_INTEGER,
}
}
pub fn ns(&self) -> u64 {
- self.t as u64 * 1_000_000_000 / frequency() as u64
+ mul_div_i64(self.t as i64, NANOS_PER_SEC, frequency() as i64) as u64
}
}
fn sub(self, other: &SteadyTime) -> Duration {
let diff = self.t as i64 - other.t as i64;
- Duration::microseconds(diff * 1_000_000 / frequency() as i64)
+ Duration::nanoseconds(mul_div_i64(diff, NANOS_PER_SEC, frequency() as i64))
}
}
+
+// Computes (value*numer)/denom without overflow, as long as both
+// (numer*denom) and the overall result fit into i64 (which is the case
+// for our time conversions).
+fn mul_div_i64(value: i64, numer: i64, denom: i64) -> i64 {
+ let q = value / denom;
+ let r = value % denom;
+ // Decompose value as (value/denom*denom + value%denom),
+ // substitute into (value*numer)/denom and simplify.
+ // r < denom, so (denom*numer) is the upper bound of (r*numer)
+ q * numer + r * numer / denom
+}
+
+#[test]
+fn test_muldiv() {
+ assert_eq!(mul_div_i64( 1_000_000_000_001, 1_000_000_000, 1_000_000), 1_000_000_000_001_000);
+ assert_eq!(mul_div_i64(-1_000_000_000_001, 1_000_000_000, 1_000_000), -1_000_000_000_001_000);
+ assert_eq!(mul_div_i64(-1_000_000_000_001,-1_000_000_000, 1_000_000), 1_000_000_000_001_000);
+ assert_eq!(mul_div_i64( 1_000_000_000_001, 1_000_000_000,-1_000_000), -1_000_000_000_001_000);
+ assert_eq!(mul_div_i64( 1_000_000_000_001,-1_000_000_000,-1_000_000), 1_000_000_000_001_000);
+}
pub fn is_tty(fd: c_int) -> bool {
let mut out: DWORD = 0;
- // If this function doesn't panic then fd is a TTY
+ // If this function doesn't return an error, then fd is a TTY
match unsafe { GetConsoleMode(get_osfhandle(fd) as HANDLE,
&mut out as LPDWORD) } {
0 => false,
// This is trivially devirtualizable by LLVM because we never store anything
// to this field and rustc can declare the `static` as constant as well.
#[doc(hidden)]
+ #[unstable(feature = "thread_local_internals")]
pub inner: fn() -> &'static __impl::KeyInner<UnsafeCell<Option<T>>>,
// initialization routine to invoke to create a value
#[doc(hidden)]
+ #[unstable(feature = "thread_local_internals")]
pub init: fn() -> T,
}
ExprIndex(P<Expr>, P<Expr>),
ExprRange(Option<P<Expr>>, Option<P<Expr>>),
- /// Variable reference, possibly containing `::` and/or
- /// type parameters, e.g. foo::bar::<baz>
- ExprPath(Path),
- /// A "qualified path", e.g. `<Vec<T> as SomeTrait>::SomeType`
- ExprQPath(P<QPath>),
+ /// Variable reference, possibly containing `::` and/or type
+ /// parameters, e.g. foo::bar::<baz>. Optionally "qualified",
+ /// e.g. `<Vec<T> as SomeTrait>::SomeType`.
+ ExprPath(Option<QSelf>, Path),
ExprAddrOf(Mutability, P<Expr>),
ExprBreak(Option<Ident>),
ExprParen(P<Expr>)
}
-/// A "qualified path":
+/// The explicit Self type in a "qualified path". The actual
+/// path, including the trait and the associated item, is stored
+/// sepparately. `position` represents the index of the associated
+/// item qualified with this Self type.
///
-/// <Vec<T> as SomeTrait>::SomeAssociatedItem
-/// ^~~~~ ^~~~~~~~~ ^~~~~~~~~~~~~~~~~~
-/// self_type trait_name item_path
+/// <Vec<T> as a::b::Trait>::AssociatedItem
+/// ^~~~~ ~~~~~~~~~~~~~~^
+/// ty position = 3
+///
+/// <Vec<T>>::AssociatedItem
+/// ^~~~~ ^
+/// ty position = 0
#[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
-pub struct QPath {
- pub self_type: P<Ty>,
- pub trait_ref: P<TraitRef>,
- pub item_path: PathSegment,
+pub struct QSelf {
+ pub ty: P<Ty>,
+ pub position: usize
}
#[derive(Clone, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug, Copy)]
TyBareFn(P<BareFnTy>),
/// A tuple (`(A, B, C, D,...)`)
TyTup(Vec<P<Ty>> ),
- /// A path (`module::module::...::Type`) or primitive
+ /// A path (`module::module::...::Type`), optionally
+ /// "qualified", e.g. `<Vec<T> as SomeTrait>::SomeType`.
///
/// Type parameters are stored in the Path itself
- TyPath(Path, NodeId),
+ TyPath(Option<QSelf>, Path),
/// Something like `A+B`. Note that `B` must always be a path.
TyObjectSum(P<Ty>, TyParamBounds),
/// A type like `for<'a> Foo<&'a Bar>`
TyPolyTraitRef(TyParamBounds),
- /// A "qualified path", e.g. `<Vec<T> as SomeTrait>::SomeType`
- TyQPath(P<QPath>),
/// No-op; kept solely so that we can pretty-print faithfully
TyParen(P<Ty>),
/// Unused for now
}
pub fn is_path(e: P<Expr>) -> bool {
- return match e.node { ExprPath(_) => true, _ => false };
+ match e.node { ExprPath(..) => true, _ => false }
}
/// Get a string representation of a signed int type, with its value.
fn visit_ty(&mut self, typ: &Ty) {
self.operation.visit_id(typ.id);
- if let TyPath(_, id) = typ.node {
- self.operation.visit_id(id);
- }
visit::walk_ty(self, typ)
}
visit::walk_trait_item(self, tm);
}
- fn visit_lifetime_ref(&mut self, lifetime: &'v Lifetime) {
+ fn visit_lifetime_ref(&mut self, lifetime: &Lifetime) {
self.operation.visit_id(lifetime.id);
}
- fn visit_lifetime_def(&mut self, def: &'v LifetimeDef) {
+ fn visit_lifetime_def(&mut self, def: &LifetimeDef) {
self.visit_lifetime_ref(&def.lifetime);
}
+
+ fn visit_trait_ref(&mut self, trait_ref: &TraitRef) {
+ self.operation.visit_id(trait_ref.ref_id);
+ visit::walk_trait_ref(self, trait_ref);
+ }
}
pub fn visit_ids_for_inlined_item<O: IdVisitingOperation>(item: &InlinedItem,
#[test] fn idents_name_eq_test() {
assert!(segments_name_eq(
&[Ident{name:Name(3),ctxt:4}, Ident{name:Name(78),ctxt:82}]
- .iter().map(ident_to_segment).collect::<Vec<PathSegment>>()[],
+ .iter().map(ident_to_segment).collect::<Vec<PathSegment>>(),
&[Ident{name:Name(3),ctxt:104}, Ident{name:Name(78),ctxt:182}]
- .iter().map(ident_to_segment).collect::<Vec<PathSegment>>()[]));
+ .iter().map(ident_to_segment).collect::<Vec<PathSegment>>()));
assert!(!segments_name_eq(
&[Ident{name:Name(3),ctxt:4}, Ident{name:Name(78),ctxt:82}]
- .iter().map(ident_to_segment).collect::<Vec<PathSegment>>()[],
+ .iter().map(ident_to_segment).collect::<Vec<PathSegment>>(),
&[Ident{name:Name(3),ctxt:104}, Ident{name:Name(77),ctxt:182}]
- .iter().map(ident_to_segment).collect::<Vec<PathSegment>>()[]));
+ .iter().map(ident_to_segment).collect::<Vec<PathSegment>>()));
}
}
-> ast::Path;
fn qpath(&self, self_type: P<ast::Ty>,
- trait_ref: P<ast::TraitRef>,
- ident: ast::Ident )
- -> P<ast::QPath>;
+ trait_path: ast::Path,
+ ident: ast::Ident)
+ -> (ast::QSelf, ast::Path);
fn qpath_all(&self, self_type: P<ast::Ty>,
- trait_ref: P<ast::TraitRef>,
+ trait_path: ast::Path,
ident: ast::Ident,
lifetimes: Vec<ast::Lifetime>,
types: Vec<P<ast::Ty>>,
- bindings: Vec<P<ast::TypeBinding>> )
- -> P<ast::QPath>;
+ bindings: Vec<P<ast::TypeBinding>>)
+ -> (ast::QSelf, ast::Path);
// types
fn ty_mt(&self, ty: P<ast::Ty>, mutbl: ast::Mutability) -> ast::MutTy;
// expressions
fn expr(&self, span: Span, node: ast::Expr_) -> P<ast::Expr>;
fn expr_path(&self, path: ast::Path) -> P<ast::Expr>;
- fn expr_qpath(&self, span: Span, q
path: P<ast::QPath>) -> P<ast::Expr>;
+ fn expr_qpath(&self, span: Span, q
self: ast::QSelf, path: ast::Path) -> P<ast::Expr>;
fn expr_ident(&self, span: Span, id: ast::Ident) -> P<ast::Expr>;
fn expr_self(&self, span: Span) -> P<ast::Expr>;
/// Constructs a qualified path.
///
- /// Constructs a path like `<self_type as trait_ref>::ident`.
+ /// Constructs a path like `<self_type as trait_path>::ident`.
fn qpath(&self,
self_type: P<ast::Ty>,
- trait_ref: P<ast::TraitRef>,
+ trait_path: ast::Path,
ident: ast::Ident)
- -> P<ast::QPath> {
- self.qpath_all(self_type, trait_ref, ident, Vec::new(), Vec::new(), Vec::new())
+ -> (ast::QSelf, ast::Path) {
+ self.qpath_all(self_type, trait_path, ident, vec![], vec![], vec![])
}
/// Constructs a qualified path.
///
- /// Constructs a path like `<self_type as trait_ref>::ident<a, T, A=Bar>`.
+ /// Constructs a path like `<self_type as trait_path>::ident<'a, T, A=Bar>`.
fn qpath_all(&self,
self_type: P<ast::Ty>,
- trait_ref: P<ast::TraitRef>,
+ trait_path: ast::Path,
ident: ast::Ident,
lifetimes: Vec<ast::Lifetime>,
types: Vec<P<ast::Ty>>,
- bindings: Vec<P<ast::TypeBinding>> )
- -> P<ast::QPath> {
- let segment = ast::PathSegment {
+ bindings: Vec<P<ast::TypeBinding>>)
+ -> (ast::QSelf, ast::Path) {
+ let mut path = trait_path;
+ path.segments.push(ast::PathSegment {
identifier: ident,
parameters: ast::AngleBracketedParameters(ast::AngleBracketedParameterData {
lifetimes: lifetimes,
types: OwnedSlice::from_vec(types),
bindings: OwnedSlice::from_vec(bindings),
})
- };
+ });
- P(ast::QPath {
- self_type: self_type,
- trait_ref: trait_ref,
- item_path: segment,
- })
+ (ast::QSelf {
+ ty: self_type,
+ position: path.segments.len() - 1
+ }, path)
}
fn ty_mt(&self, ty: P<ast::Ty>, mutbl: ast::Mutability) -> ast::MutTy {
}
fn ty_path(&self, path: ast::Path) -> P<ast::Ty> {
- self.ty(path.span, ast::TyPath(path, ast::DUMMY_NODE_ID))
+ self.ty(path.span, ast::TyPath(None, path))
}
fn ty_sum(&self, path: ast::Path, bounds: OwnedSlice<ast::TyParamBound>) -> P<ast::Ty> {
}
fn expr_path(&self, path: ast::Path) -> P<ast::Expr> {
- self.expr(path.span, ast::ExprPath(path))
+ self.expr(path.span, ast::ExprPath(None, path))
}
/// Constructs a QPath expression.
- fn expr_qpath(&self, span: Span, q
path: P<ast::QPath>) -> P<ast::Expr> {
- self.expr(span, ast::ExprQPath(qpath))
+ fn expr_qpath(&self, span: Span, q
self: ast::QSelf, path: ast::Path) -> P<ast::Expr> {
+ self.expr(span, ast::ExprPath(Some(qself), path))
}
fn expr_ident(&self, span: Span, id: ast::Ident) -> P<ast::Expr> {
let e = P(ast::Expr {
id: ast::DUMMY_NODE_ID,
- node: ast::ExprPath(
+ node: ast::ExprPath(None,
ast::Path {
span: sp,
global: false,
generics: LifetimeBounds::empty(),
explicit_self: borrowed_explicit_self(),
args: vec!(borrowed_self()),
- ret_ty: Literal(path!(bool)),
+ ret_ty: Literal(path_local!(bool)),
attributes: attrs,
combine_substructure: combine_substructure(box |a, b, c| {
$f(a, b, c)
generics: LifetimeBounds::empty(),
explicit_self: borrowed_explicit_self(),
args: vec!(borrowed_self()),
- ret_ty: Literal(path!(bool)),
+ ret_ty: Literal(path_local!(bool)),
attributes: attrs,
combine_substructure: combine_substructure(box |cx, span, substr| {
cs_op($op, $equal, cx, span, substr)
)
}
+macro_rules! path_local {
+ ($x:ident) => (
+ ::ext::deriving::generic::ty::Path::new_local(stringify!($x))
+ )
+}
+
macro_rules! pathvec_std {
($cx:expr, $first:ident :: $($rest:ident)::+) => (
if $cx.use_std {
name: "from_i64",
generics: LifetimeBounds::empty(),
explicit_self: None,
- args: vec!(Literal(path!(i64))),
+ args: vec!(Literal(path_local!(i64))),
ret_ty: Literal(Path::new_(pathvec_std!(cx, core::option::Option),
None,
vec!(box Self_),
name: "from_u64",
generics: LifetimeBounds::empty(),
explicit_self: None,
- args: vec!(Literal(path!(u64))),
+ args: vec!(Literal(path_local!(u64))),
ret_ty: Literal(Path::new_(pathvec_std!(cx, core::option::Option),
None,
vec!(box Self_),
debug!("expanding type {:?} with impl_ty {:?}", t, impl_ty);
let t = match (t.node.clone(), impl_ty) {
// Expand uses of `Self` in impls to the concrete type.
- (ast::Ty_::TyPath(ref path, _), Some(ref impl_ty)) => {
+ (ast::Ty_::TyPath(None, ref path), Some(ref impl_ty)) => {
let path_as_ident = path_to_ident(path);
// Note unhygenic comparison here. I think this is correct, since
// even though `Self` is almost just a type parameter, the treatment
impl<'v> Visitor<'v> for PathExprFinderContext {
fn visit_expr(&mut self, expr: &ast::Expr) {
- match expr.node {
- ast::ExprPath(ref p) => {
- self.path_accumulator.push(p.clone());
- // not calling visit_path, but it should be fine.
- }
- _ => visit::walk_expr(self, expr)
+ if let ast::ExprPath(None, ref p) = expr.node {
+ self.path_accumulator.push(p.clone());
}
+ visit::walk_expr(self, expr);
}
}
let renamed_crate = renamer.fold_crate(the_crate);
let idents = crate_idents(&renamed_crate);
let resolved : Vec<ast::Name> = idents.iter().map(|id| mtwt::resolve(*id)).collect();
- assert_eq!(resolved,vec!(f_ident.name,Name(16),int_ident.name,Name(16),Name(16),Name(16)));
+ assert_eq!(resolved, [f_ident.name,Name(16),int_ident.name,Name(16),Name(16),Name(16)]);
}
// test the PatIdentRenamer; only PatIdents get renamed
let idents = crate_idents(&renamed_crate);
let resolved : Vec<ast::Name> = idents.iter().map(|id| mtwt::resolve(*id)).collect();
let x_name = x_ident.name;
- assert_eq!(resolved,vec!(f_ident.name,Name(16),int_ident.name,Name(16),x_name,x_name));
+ assert_eq!(resolved, [f_ident.name,Name(16),int_ident.name,Name(16),x_name,x_name]);
}
-
-
}
fn xorpush_test () {
let mut s = Vec::new();
xor_push(&mut s, 14);
- assert_eq!(s.clone(), vec!(14));
+ assert_eq!(s.clone(), [14]);
xor_push(&mut s, 14);
- assert_eq!(s.clone(), Vec::new());
+ assert_eq!(s.clone(), []);
xor_push(&mut s, 14);
- assert_eq!(s.clone(), vec!(14));
+ assert_eq!(s.clone(), [14]);
xor_push(&mut s, 15);
- assert_eq!(s.clone(), vec!(14, 15));
+ assert_eq!(s.clone(), [14, 15]);
xor_push(&mut s, 16);
- assert_eq!(s.clone(), vec!(14, 15, 16));
+ assert_eq!(s.clone(), [14, 15, 16]);
xor_push(&mut s, 16);
- assert_eq!(s.clone(), vec!(14, 15));
+ assert_eq!(s.clone(), [14, 15]);
xor_push(&mut s, 15);
- assert_eq!(s.clone(), vec!(14));
+ assert_eq!(s.clone(), [14]);
}
fn id(n: u32, s: SyntaxContext) -> Ident {
assert_eq!(marksof_internal (EMPTY_CTXT,stopname,&t),Vec::new());
// FIXME #5074: ANF'd to dodge nested calls
{ let ans = unfold_marks(vec!(4,98),EMPTY_CTXT,&mut t);
- assert_eq! (marksof_internal (ans,stopname,&t),vec!(4,98));}
+ assert_eq! (marksof_internal (ans,stopname,&t), [4, 98]);}
// does xoring work?
{ let ans = unfold_marks(vec!(5,5,16),EMPTY_CTXT,&mut t);
- assert_eq! (marksof_internal (ans,stopname,&t), vec!(16));}
+ assert_eq! (marksof_internal (ans,stopname,&t), [16]);}
// does nested xoring work?
{ let ans = unfold_marks(vec!(5,10,10,5,16),EMPTY_CTXT,&mut t);
- assert_eq! (marksof_internal (ans, stopname,&t), vec!(16));}
+ assert_eq! (marksof_internal (ans, stopname,&t), [16]);}
// rename where stop doesn't match:
{ let chain = vec!(M(9),
R(id(name1.usize() as u32,
Name(100101102)),
M(14));
let ans = unfold_test_sc(chain,EMPTY_CTXT,&mut t);
- assert_eq! (marksof_internal (ans, stopname, &t), vec!(9,14));}
+ assert_eq! (marksof_internal (ans, stopname, &t), [9, 14]);}
// rename where stop does match
{ let name1sc = apply_mark_internal(4, EMPTY_CTXT, &mut t);
let chain = vec!(M(9),
stopname),
M(14));
let ans = unfold_test_sc(chain,EMPTY_CTXT,&mut t);
- assert_eq! (marksof_internal (ans, stopname, &t), vec!(9)); }
+ assert_eq! (marksof_internal (ans, stopname, &t), [9]); }
}
let tok = if let TtToken(_, ref tok) = *token { tok } else { unreachable!() };
// If T' is in the set FOLLOW(NT), continue. Else, reject.
match (&next_token, is_in_follow(cx, &next_token, frag_spec.as_str())) {
+ (_, Err(msg)) => {
+ cx.span_err(sp, &msg);
+ continue
+ }
(&Eof, _) => return Some((sp, tok.clone())),
(_, Ok(true)) => continue,
(next, Ok(false)) => {
token_to_string(next)));
continue
},
- (_, Err(msg)) => {
- cx.span_err(sp, &msg);
- continue
- }
}
},
TtSequence(sp, ref seq) => {
("no_link", Normal),
("derive", Normal),
("should_fail", Normal),
+ ("should_panic", Normal),
("ignore", Normal),
("no_implicit_prelude", Normal),
("reexport_test_harness_main", Normal),
("static_assert", Whitelisted),
("no_debug", Whitelisted),
("omit_gdb_pretty_printer_section", Whitelisted),
- ("unsafe_no_drop_flag", Whitelisted),
+ ("unsafe_no_drop_flag", Gated("unsafe_no_drop_flag",
+ "unsafe_no_drop_flag has unstable semantics \
+ and may be removed in the future")),
// used in resolve
("prelude_import", Whitelisted),
fn visit_ty(&mut self, t: &ast::Ty) {
match t.node {
- ast::TyPath(ref p, _) => {
+ ast::TyPath(None, ref p) => {
match &*p.segments {
[ast::PathSegment { identifier, .. }] => {
noop_fold_ty(t, self)
}
- fn fold_qpath(&mut self, t: P<QPath>) -> P<QPath> {
- noop_fold_qpath(t, self)
- }
-
fn fold_ty_binding(&mut self, t: P<TypeBinding>) -> P<TypeBinding> {
noop_fold_ty_binding(t, self)
}
}
TyTup(tys) => TyTup(tys.move_map(|ty| fld.fold_ty(ty))),
TyParen(ty) => TyParen(fld.fold_ty(ty)),
- TyPath(path, id) => {
- let id = fld.new_id(id);
- TyPath(fld.fold_path(path), id)
+ TyPath(qself, path) => {
+ let qself = qself.map(|QSelf { ty, position }| {
+ QSelf {
+ ty: fld.fold_ty(ty),
+ position: position
+ }
+ });
+ TyPath(qself, fld.fold_path(path))
}
TyObjectSum(ty, bounds) => {
TyObjectSum(fld.fold_ty(ty),
fld.fold_bounds(bounds))
}
- TyQPath(qpath) => {
- TyQPath(fld.fold_qpath(qpath))
- }
TyFixedLengthVec(ty, e) => {
TyFixedLengthVec(fld.fold_ty(ty), fld.fold_expr(e))
}
})
}
-pub fn noop_fold_qpath<T: Folder>(qpath: P<QPath>, fld: &mut T) -> P<QPath> {
- qpath.map(|qpath| {
- QPath {
- self_type: fld.fold_ty(qpath.self_type),
- trait_ref: qpath.trait_ref.map(|tr| fld.fold_trait_ref(tr)),
- item_path: PathSegment {
- identifier: fld.fold_ident(qpath.item_path.identifier),
- parameters: fld.fold_path_parameters(qpath.item_path.parameters),
- }
- }
- })
-}
-
pub fn noop_fold_foreign_mod<T: Folder>(ForeignMod {abi, items}: ForeignMod,
fld: &mut T) -> ForeignMod {
ForeignMod {
ExprRange(e1.map(|x| folder.fold_expr(x)),
e2.map(|x| folder.fold_expr(x)))
}
- ExprPath(pth) => ExprPath(folder.fold_path(pth)),
- ExprQPath(qpath) => ExprQPath(folder.fold_qpath(qpath)),
+ ExprPath(qself, path) => {
+ let qself = qself.map(|QSelf { ty, position }| {
+ QSelf {
+ ty: folder.fold_ty(ty),
+ position: position
+ }
+ });
+ ExprPath(qself, folder.fold_path(path))
+ }
ExprBreak(opt_ident) => ExprBreak(opt_ident.map(|x| folder.fold_ident(x))),
ExprAgain(opt_ident) => ExprAgain(opt_ident.map(|x| folder.fold_ident(x))),
ExprRet(e) => ExprRet(e.map(|x| folder.fold_expr(x))),
assert!(string_to_expr("a".to_string()) ==
P(ast::Expr{
id: ast::DUMMY_NODE_ID,
- node: ast::ExprPath(ast::Path {
+ node: ast::ExprPath(None, ast::Path {
span: sp(0, 1),
global: false,
segments: vec!(
assert!(string_to_expr("::a::b".to_string()) ==
P(ast::Expr {
id: ast::DUMMY_NODE_ID,
- node: ast::ExprPath(ast::Path {
+ node: ast::ExprPath(None, ast::Path {
span: sp(0, 6),
global: true,
segments: vec!(
id: ast::DUMMY_NODE_ID,
node:ast::ExprRet(Some(P(ast::Expr{
id: ast::DUMMY_NODE_ID,
- node:ast::ExprPath(ast::Path{
+ node:ast::ExprPath(None, ast::Path{
span: sp(7, 8),
global: false,
segments: vec!(
P(Spanned{
node: ast::StmtExpr(P(ast::Expr {
id: ast::DUMMY_NODE_ID,
- node: ast::ExprPath(ast::Path {
+ node: ast::ExprPath(None, ast::Path {
span:sp(0,1),
global:false,
segments: vec!(
node: ast::ItemFn(P(ast::FnDecl {
inputs: vec!(ast::Arg{
ty: P(ast::Ty{id: ast::DUMMY_NODE_ID,
- node: ast::TyPath(ast::Path{
+ node: ast::TyPath(None, ast::Path{
span:sp(10,13),
global:false,
segments: vec!(
parameters: ast::PathParameters::none(),
}
),
- }, ast::DUMMY_NODE_ID),
+ }),
span:sp(10,13)
}),
pat: P(ast::Pat {
stmts: vec!(P(Spanned{
node: ast::StmtSemi(P(ast::Expr{
id: ast::DUMMY_NODE_ID,
- node: ast::ExprPath(
+ node: ast::ExprPath(None,
ast::Path{
span:sp(17,18),
global:false,
use ast::{ExprBreak, ExprCall, ExprCast};
use ast::{ExprField, ExprTupField, ExprClosure, ExprIf, ExprIfLet, ExprIndex};
use ast::{ExprLit, ExprLoop, ExprMac, ExprRange};
-use ast::{ExprMethodCall, ExprParen, ExprPath, ExprQPath};
+use ast::{ExprMethodCall, ExprParen, ExprPath};
use ast::{ExprRepeat, ExprRet, ExprStruct, ExprTup, ExprUnary};
use ast::{ExprVec, ExprWhile, ExprWhileLet, ExprForLoop, Field, FnDecl};
use ast::{ForeignItem, ForeignItemStatic, ForeignItemFn, ForeignMod, FunctionRetTy};
use ast::{Pat, PatEnum, PatIdent, PatLit, PatRange, PatRegion, PatStruct};
use ast::{PatTup, PatBox, PatWild, PatWildMulti, PatWildSingle};
use ast::{PolyTraitRef};
-use ast::{QPath, RequiredMethod};
+use ast::{QSelf, RequiredMethod};
use ast::{Return, BiShl, BiShr, Stmt, StmtDecl};
use ast::{StmtExpr, StmtSemi, StmtMac, StructDef, StructField};
use ast::{StructVariantKind, BiSub, StrStyle};
use ast::{TupleVariantKind, Ty, Ty_, TypeBinding};
use ast::{TyFixedLengthVec, TyBareFn};
use ast::{TyTypeof, TyInfer, TypeMethod};
-use ast::{TyParam, TyParamBound, TyParen, TyPath, TyPolyTraitRef, TyPtr, TyQPath};
+use ast::{TyParam, TyParamBound, TyParen, TyPath, TyPolyTraitRef, TyPtr};
use ast::{TyRptr, TyTup, TyU32, TyVec, UnUniq};
use ast::{TypeImplItem, TypeTraitItem, Typedef,};
use ast::{UnnamedField, UnsafeBlock};
_ => unreachable!()
};
let span = $p.span;
- Some($p.mk_expr(span.lo, span.hi, ExprPath(pt)))
+ Some($p.mk_expr(span.lo, span.hi, ExprPath(None, pt)))
}
token::Interpolated(token::NtBlock(_)) => {
// FIXME: The following avoids an issue with lexical borrowck scopes,
}
pub fn parse_ty_path(&mut self) -> Ty_ {
- let path = self.parse_path(LifetimeAndTypesWithoutColons);
- TyPath(path, ast::DUMMY_NODE_ID)
+ TyPath(None, self.parse_path(LifetimeAndTypesWithoutColons))
}
/// parse a TyBareFn type:
} else if self.eat_lt() {
// QUALIFIED PATH `<TYPE as TRAIT_REF>::item`
let self_type = self.parse_ty_sum();
- self.expect_keyword(keywords::As);
- let trait_ref = self.parse_trait_ref();
+
+ let mut path = if self.eat_keyword(keywords::As) {
+ self.parse_path(LifetimeAndTypesWithoutColons)
+ } else {
+ ast::Path {
+ span: self.span,
+ global: false,
+ segments: vec![]
+ }
+ };
+
+ let qself = QSelf {
+ ty: self_type,
+ position: path.segments.len()
+ };
+
self.expect(&token::Gt);
self.expect(&token::ModSep);
- let item_name = self.parse_ident();
- TyQPath(P(QPath {
- self_type: self_type,
- trait_ref: P(trait_ref),
- item_path: ast::PathSegment {
- identifier: item_name,
- parameters: ast::PathParameters::none()
- }
- }))
+
+ path.segments.push(ast::PathSegment {
+ identifier: self.parse_ident(),
+ parameters: ast::PathParameters::none()
+ });
+
+ if path.segments.len() == 1 {
+ path.span.lo = self.last_span.lo;
+ }
+ path.span.hi = self.last_span.hi;
+
+ TyPath(Some(qself), path)
} else if self.check(&token::ModSep) ||
self.token.is_ident() ||
self.token.is_path() {
}, token::Plain) => {
self.bump();
let path = ast_util::ident_to_path(mk_sp(lo, hi), id);
- ex = ExprPath(path);
+ ex = ExprPath(None, path);
hi = self.last_span.hi;
}
token::OpenDelim(token::Bracket) => {
if self.eat_lt() {
// QUALIFIED PATH `<TYPE as TRAIT_REF>::item::<'a, T>`
let self_type = self.parse_ty_sum();
- self.expect_keyword(keywords::As);
- let trait_ref = self.parse_trait_ref();
+ let mut path = if self.eat_keyword(keywords::As) {
+ self.parse_path(LifetimeAndTypesWithoutColons)
+ } else {
+ ast::Path {
+ span: self.span,
+ global: false,
+ segments: vec![]
+ }
+ };
+ let qself = QSelf {
+ ty: self_type,
+ position: path.segments.len()
+ };
self.expect(&token::Gt);
self.expect(&token::ModSep);
+
let item_name = self.parse_ident();
let parameters = if self.eat(&token::ModSep) {
self.expect_lt();
} else {
ast::PathParameters::none()
};
+ path.segments.push(ast::PathSegment {
+ identifier: item_name,
+ parameters: parameters
+ });
+
+ if path.segments.len() == 1 {
+ path.span.lo = self.last_span.lo;
+ }
+ path.span.hi = self.last_span.hi;
+
let hi = self.span.hi;
- return self.mk_expr(lo, hi, ExprQPath(P(QPath {
- self_type: self_type,
- trait_ref: P(trait_ref),
- item_path: ast::PathSegment {
- identifier: item_name,
- parameters: parameters
- }
- })));
+ return self.mk_expr(lo, hi, ExprPath(Some(qself), path));
}
if self.eat_keyword(keywords::Move) {
return self.parse_lambda_expr(CaptureByValue);
}
hi = pth.span.hi;
- ex = ExprPath(pth);
+ ex = ExprPath(None, pth);
} else {
// other literal expression
let lit = self.parse_lit();
let end = if self.token.is_ident() || self.token.is_path() {
let path = self.parse_path(LifetimeAndTypesWithColons);
let hi = self.span.hi;
- self.mk_expr(lo, hi, ExprPath(path))
+ self.mk_expr(lo, hi, ExprPath(None, path))
} else {
self.parse_literal_maybe_minus()
};
let opt_trait = if could_be_trait && self.eat_keyword(keywords::For) {
// New-style trait. Reinterpret the type as a trait.
match ty.node {
- TyPath(ref path, node_id) => {
+ TyPath(None, ref path) => {
Some(TraitRef {
path: (*path).clone(),
- ref_id: node_id,
+ ref_id: ty.id,
})
}
_ => {
}
pub fn path_to_string(p: &ast::Path) -> String {
- $to_string(|s| s.print_path(p, false))
+ $to_string(|s| s.print_path(p, false, 0))
}
pub fn ident_to_string(id: &ast::Ident) -> String {
&generics,
None));
}
- ast::TyPath(ref path, _) => {
- try!(self.print_path(path, false));
+ ast::TyPath(None, ref path) => {
+ try!(self.print_path(path, false, 0));
+ }
+ ast::TyPath(Some(ref qself), ref path) => {
+ try!(self.print_qpath(path, qself, false))
}
ast::TyObjectSum(ref ty, ref bounds) => {
try!(self.print_type(&**ty));
ast::TyPolyTraitRef(ref bounds) => {
try!(self.print_bounds("", &bounds[..]));
}
- ast::TyQPath(ref qpath) => {
- try!(self.print_qpath(&**qpath, false))
- }
ast::TyFixedLengthVec(ref ty, ref v) => {
try!(word(&mut self.s, "["));
try!(self.print_type(&**ty));
ast::ItemMac(codemap::Spanned { node: ast::MacInvocTT(ref pth, ref tts, _),
..}) => {
try!(self.print_visibility(item.vis));
- try!(self.print_path(pth, false));
+ try!(self.print_path(pth, false, 0));
try!(word(&mut self.s, "! "));
try!(self.print_ident(item.ident));
try!(self.cbox(indent_unit));
}
fn print_trait_ref(&mut self, t: &ast::TraitRef) -> IoResult<()> {
- self.print_path(&t.path, false)
+ self.print_path(&t.path, false, 0)
}
fn print_formal_lifetime_list(&mut self, lifetimes: &[ast::LifetimeDef]) -> IoResult<()> {
ast::MethMac(codemap::Spanned { node: ast::MacInvocTT(ref pth, ref tts, _),
..}) => {
// code copied from ItemMac:
- try!(self.print_path(pth, false));
+ try!(self.print_path(pth, false, 0));
try!(word(&mut self.s, "! "));
try!(self.cbox(indent_unit));
try!(self.popen());
match m.node {
// I think it's reasonable to hide the ctxt here:
ast::MacInvocTT(ref pth, ref tts, _) => {
- try!(self.print_path(pth, false));
+ try!(self.print_path(pth, false, 0));
try!(word(&mut self.s, "!"));
match delim {
token::Paren => try!(self.popen()),
path: &ast::Path,
fields: &[ast::Field],
wth: &Option<P<ast::Expr>>) -> IoResult<()> {
- try!(self.print_path(path, true));
+ try!(self.print_path(path, true, 0));
if !(fields.is_empty() && wth.is_none()) {
try!(word(&mut self.s, "{"));
try!(self.commasep_cmnt(
try!(self.print_expr(&**e));
}
}
- ast::ExprPath(ref path) => try!(self.print_path(path, true)),
- ast::ExprQPath(ref qpath) => try!(self.print_qpath(&**qpath, true)),
+ ast::ExprPath(None, ref path) => {
+ try!(self.print_path(path, true, 0))
+ }
+ ast::ExprPath(Some(ref qself), ref path) => {
+ try!(self.print_qpath(path, qself, true))
+ }
ast::ExprBreak(opt_ident) => {
try!(word(&mut self.s, "break"));
try!(space(&mut self.s));
fn print_path(&mut self,
path: &ast::Path,
- colons_before_params: bool)
+ colons_before_params: bool,
+ depth: usize)
-> IoResult<()>
{
try!(self.maybe_print_comment(path.span.lo));
- if path.global {
- try!(word(&mut self.s, "::"));
- }
- let mut first = true;
- for segment in &path.segments {
+ let mut first = !path.global;
+ for segment in &path.segments[..path.segments.len()-depth] {
if first {
first = false
} else {
}
fn print_qpath(&mut self,
- qpath: &ast::QPath,
+ path: &ast::Path,
+ qself: &ast::QSelf,
colons_before_params: bool)
-> IoResult<()>
{
try!(word(&mut self.s, "<"));
- try!(self.print_type(&*qpath.self_type));
- try!(space(&mut self.s));
- try!(self.word_space("as"));
- try!(self.print_trait_ref(&*qpath.trait_ref));
+ try!(self.print_type(&qself.ty));
+ if qself.position > 0 {
+ try!(space(&mut self.s));
+ try!(self.word_space("as"));
+ let depth = path.segments.len() - qself.position;
+ try!(self.print_path(&path, false, depth));
+ }
try!(word(&mut self.s, ">"));
try!(word(&mut self.s, "::"));
- try!(self.print_ident(qpath.item_path.identifier));
- self.print_path_parameters(&qpath.item_path.parameters, colons_before_params)
+ let item_segment = path.segments.last().unwrap();
+ try!(self.print_ident(item_segment.identifier));
+ self.print_path_parameters(&item_segment.parameters, colons_before_params)
}
fn print_path_parameters(&mut self,
}
}
ast::PatEnum(ref path, ref args_) => {
- try!(self.print_path(path, true));
+ try!(self.print_path(path, true, 0));
match *args_ {
None => try!(word(&mut self.s, "(..)")),
Some(ref args) => {
}
}
ast::PatStruct(ref path, ref fields, etc) => {
- try!(self.print_path(path, true));
+ try!(self.print_path(path, true, 0));
try!(self.nbsp());
try!(self.word_space("{"));
try!(self.commasep_cmnt(
}
}
&ast::WherePredicate::EqPredicate(ast::WhereEqPredicate{ref path, ref ty, ..}) => {
- try!(self.print_path(path, false));
+ try!(self.print_path(path, false, 0));
try!(space(&mut self.s));
try!(self.word_space("="));
try!(self.print_type(&**ty));
pub fn print_view_path(&mut self, vp: &ast::ViewPath) -> IoResult<()> {
match vp.node {
ast::ViewPathSimple(ident, ref path) => {
- try!(self.print_path(path, false));
+ try!(self.print_path(path, false, 0));
// FIXME(#6993) can't compare identifiers directly here
if path.segments.last().unwrap().identifier.name !=
}
ast::ViewPathGlob(ref path) => {
- try!(self.print_path(path, false));
+ try!(self.print_path(path, false, 0));
word(&mut self.s, "::*")
}
if path.segments.is_empty() {
try!(word(&mut self.s, "{"));
} else {
- try!(self.print_path(path, false));
+ try!(self.print_path(path, false, 0));
try!(word(&mut self.s, "::{"));
}
try!(self.commasep(Inconsistent, &idents[..], |s, w| {
assert_eq!(Vec::new(), v);
let v = SmallVector::one(1);
- assert_eq!(vec![1], v.into_iter().collect::<Vec<_>>());
+ assert_eq!([1], v.into_iter().collect::<Vec<_>>());
let v = SmallVector::many(vec![1, 2, 3]);
- assert_eq!(vec!(1, 2, 3), v.into_iter().collect::<Vec<_>>());
+ assert_eq!([1, 2, 3], v.into_iter().collect::<Vec<_>>());
}
#[test]
fn visit_path(&mut self, path: &'v Path, _id: ast::NodeId) {
walk_path(self, path)
}
- fn visit_qpath(&mut self, qpath_span: Span, qpath: &'v QPath) {
- walk_qpath(self, qpath_span, qpath)
- }
fn visit_path_segment(&mut self, path_span: Span, path_segment: &'v PathSegment) {
walk_path_segment(self, path_span, path_segment)
}
walk_fn_ret_ty(visitor, &function_declaration.decl.output);
walk_lifetime_decls_helper(visitor, &function_declaration.lifetimes);
}
- TyPath(ref path, id) => {
- visitor.visit_path(path, id);
+ TyPath(ref maybe_qself, ref path) => {
+ if let Some(ref qself) = *maybe_qself {
+ visitor.visit_ty(&qself.ty);
+ }
+ visitor.visit_path(path, typ.id);
}
TyObjectSum(ref ty, ref bounds) => {
visitor.visit_ty(&**ty);
walk_ty_param_bounds_helper(visitor, bounds);
}
- TyQPath(ref qpath) => {
- visitor.visit_qpath(typ.span, &**qpath);
- }
TyFixedLengthVec(ref ty, ref expression) => {
visitor.visit_ty(&**ty);
visitor.visit_expr(&**expression)
}
}
-pub fn walk_qpath<'v, V: Visitor<'v>>(visitor: &mut V,
- qpath_span: Span,
- qpath: &'v QPath) {
- visitor.visit_ty(&*qpath.self_type);
- visitor.visit_trait_ref(&*qpath.trait_ref);
- visitor.visit_path_segment(qpath_span, &qpath.item_path);
-}
-
pub fn walk_path_segment<'v, V: Visitor<'v>>(visitor: &mut V,
path_span: Span,
segment: &'v PathSegment) {
walk_expr_opt(visitor, start);
walk_expr_opt(visitor, end)
}
- ExprPath(ref path) => {
+ ExprPath(ref maybe_qself, ref path) => {
+ if let Some(ref qself) = *maybe_qself {
+ visitor.visit_ty(&qself.ty);
+ }
visitor.visit_path(path, expression.id)
}
- ExprQPath(ref qpath) => {
- visitor.visit_qpath(expression.span, &**qpath)
- }
ExprBreak(_) | ExprAgain(_) => {}
ExprRet(ref optional_expression) => {
walk_expr_opt(visitor, optional_expression)
#![feature(unicode)]
#![feature(std_misc)]
#![feature(env)]
+#![feature(os)]
#![cfg_attr(windows, feature(libc))]
#[macro_use] extern crate log;
let s = format!("%{{1}}%{{2}}%{}%d", op);
let res = expand(s.as_bytes(), &[], &mut Variables::new());
assert!(res.is_ok(), res.err().unwrap());
- assert_eq!(res.unwrap(), vec!(b'0' + bs[0]));
+ assert_eq!(res.unwrap(), [b'0' + bs[0]]);
let s = format!("%{{1}}%{{1}}%{}%d", op);
let res = expand(s.as_bytes(), &[], &mut Variables::new());
assert!(res.is_ok(), res.err().unwrap());
- assert_eq!(res.unwrap(), vec!(b'0' + bs[1]));
+ assert_eq!(res.unwrap(), [b'0' + bs[1]]);
let s = format!("%{{2}}%{{1}}%{}%d", op);
let res = expand(s.as_bytes(), &[], &mut Variables::new());
assert!(res.is_ok(), res.err().unwrap());
- assert_eq!(res.unwrap(), vec!(b'0' + bs[2]));
+ assert_eq!(res.unwrap(), [b'0' + bs[2]]);
}
}
use std::env;
/// Return path to database entry for `term`
+#[allow(deprecated)]
pub fn get_dbpath_for_term(term: &str) -> Option<Box<Path>> {
if term.len() == 0 {
return None;
}
- let homedir = env::home_dir();
+ let homedir = ::std::os::homedir();
let mut dirs_to_search = Vec::new();
let first_char = term.char_at(0);
if self.use_color {
try!(term.reset());
}
- Ok(())
+ term.flush()
+ }
+ Raw(ref mut stdout) => {
+ try!(stdout.write_all(word.as_bytes()));
+ stdout.flush()
}
- Raw(ref mut stdout) => stdout.write_all(word.as_bytes())
}
}
pub fn write_plain(&mut self, s: &str) -> old_io::IoResult<()> {
match self.out {
- Pretty(ref mut term) => term.write_all(s.as_bytes()),
- Raw(ref mut stdout) => stdout.write_all(s.as_bytes())
+ Pretty(ref mut term) => {
+ try!(term.write_all(s.as_bytes()));
+ term.flush()
+ },
+ Raw(ref mut stdout) => {
+ try!(stdout.write_all(s.as_bytes()));
+ stdout.flush()
+ },
}
}
}
};
- let star_idx = match line.find_str("*") { Some(i) => i, None => continue };
+ let star_idx = match line.find("*") { Some(i) => i, None => continue };
- let start_bracket = star_idx + line[star_idx..].find_str("[").unwrap();
- let end_bracket = start_bracket + line[start_bracket..].find_str("](").unwrap();
+ let start_bracket = star_idx + line[star_idx..].find("[").unwrap();
+ let end_bracket = start_bracket + line[start_bracket..].find("](").unwrap();
let start_paren = end_bracket + 1;
- let end_paren = start_paren + line[start_paren..].find_str(")").unwrap();
+ let end_paren = start_paren + line[start_paren..].find(")").unwrap();
let given_path = &line[start_paren + 1 .. end_paren];
let title = line[start_bracket + 1..end_bracket].to_string();
//! Implementation of the `build` subcommand, used to compile a book.
use std::env;
+use std::os;
use std::old_io;
use std::old_io::{fs, File, BufferedWriter, TempDir, IoResult};
let src;
if env::args().len() < 3 {
- src = env::current_dir().unwrap().clone();
+ src = os::getcwd().unwrap().clone();
} else {
src = Path::new(env::args().nth(2).unwrap().clone());
}
}
fn usage(&self) {}
fn execute(&mut self, term: &mut Term) -> CommandResult<()> {
- let cwd = env::current_dir().unwrap();
+ let cwd = os::getcwd().unwrap();
let src;
let tgt;
#![feature(core)]
#![feature(old_io)]
#![feature(env)]
+#![feature(os)]
#![feature(old_path)]
#![feature(rustdoc)]
use term::Term;
use book;
use std::old_io::{Command, File};
-use std::env;
+use std::os;
struct Test;
}
fn usage(&self) {}
fn execute(&mut self, term: &mut Term) -> CommandResult<()> {
- let cwd = env::current_dir().unwrap();
+ let cwd = os::getcwd().unwrap();
let src = cwd.clone();
let summary = File::open(&src.join("SUMMARY.md"));
+S 2015-02-25 880fb89
+ freebsd-x86_64 f4cbe4227739de986444211f8ee8d74745ab8f7f
+ linux-i386 3278ebbce8cb269acc0614dac5ddac07eab6a99c
+ linux-x86_64 72287d0d88de3e5a53bae78ac0d958e1a7637d73
+ macos-i386 33b366b5287427a340a0aa6ed886d5ff4edf6a76
+ macos-x86_64 914bf9baa32081a9d5633f1d06f4d382cd71504e
+ winnt-i386 d58b415b9d8629cb6c4952f1f6611a526a38323f
+ winnt-x86_64 2cb1dcc563d2ac6deada054de15748f5dd599c7e
+
S 2015-02-19 522d09d
freebsd-x86_64 7ea14ef85a25bca70a310a2cd660b356cf61abc7
linux-i386 26e3caa1ce1c482b9941a6bdc64b3e65d036c200
#[stable(feature = "test_feature", since = "1.0.0")]
#[deprecated(since = "1.0.0")]
-pub struct DeprecatedStruct { pub i: int }
+pub struct DeprecatedStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] pub i: int
+}
#[unstable(feature = "test_feature")]
#[deprecated(since = "1.0.0")]
-pub struct DeprecatedUnstableStruct { pub i: int }
+pub struct DeprecatedUnstableStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] pub i: int
+}
#[unstable(feature = "test_feature")]
-pub struct UnstableStruct { pub i: int }
+pub struct UnstableStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] pub i: int
+}
#[stable(feature = "rust1", since = "1.0.0")]
-pub struct StableStruct { pub i: int }
+pub struct StableStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] pub i: int
+}
#[stable(feature = "test_feature", since = "1.0.0")]
#[deprecated(since = "1.0.0")]
#[stable(feature = "test_feature", since = "1.0.0")]
#[deprecated(since = "1.0.0")]
-pub struct DeprecatedTupleStruct(pub int);
+pub struct DeprecatedTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub int);
#[unstable(feature = "test_feature")]
#[deprecated(since = "1.0.0")]
-pub struct DeprecatedUnstableTupleStruct(pub int);
+pub struct DeprecatedUnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub int);
#[unstable(feature = "test_feature")]
-pub struct UnstableTupleStruct(pub int);
+pub struct UnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub int);
#[stable(feature = "rust1", since = "1.0.0")]
-pub struct StableTupleStruct(pub int);
+pub struct StableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub int);
#[macro_export]
macro_rules! macro_test {
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(staged_api)]
+#![staged_api]
+#![stable(feature = "rust1", since = "1.0.0")]
+
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct Stable {
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub inherit: u8, // it's a lie (stable doesn't inherit)
+ #[unstable(feature = "test_feature")]
+ pub override1: u8,
+ #[deprecated(since = "1.0.0")]
+ #[unstable(feature = "test_feature")]
+ pub override2: u8,
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct Stable2(#[stable(feature = "rust1", since = "1.0.0")] pub u8,
+ #[unstable(feature = "test_feature")] pub u8,
+ #[unstable(feature = "test_feature")] #[deprecated(since = "1.0.0")] pub u8);
+
+#[unstable(feature = "test_feature")]
+pub struct Unstable {
+ pub inherit: u8,
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub override1: u8,
+ #[deprecated(since = "1.0.0")]
+ #[unstable(feature = "test_feature")]
+ pub override2: u8,
+}
+
+#[unstable(feature = "test_feature")]
+pub struct Unstable2(pub u8,
+ #[stable(feature = "rust1", since = "1.0.0")] pub u8,
+ #[unstable(feature = "test_feature")] #[deprecated(since = "1.0.0")] pub u8);
+
+#[unstable(feature = "test_feature")]
+#[deprecated(feature = "rust1", since = "1.0.0")]
+pub struct Deprecated {
+ pub inherit: u8,
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub override1: u8,
+ #[unstable(feature = "test_feature")]
+ pub override2: u8,
+}
+
+#[unstable(feature = "test_feature")]
+#[deprecated(feature = "rust1", since = "1.0.0")]
+pub struct Deprecated2(pub u8,
+ #[stable(feature = "rust1", since = "1.0.0")] pub u8,
+ #[unstable(feature = "test_feature")] pub u8);
#![crate_name="static_methods_crate"]
#![crate_type = "lib"]
-use std::int;
-
pub trait read {
fn readMaybe(s: String) -> Option<Self>;
}
-impl read for int {
- fn readMaybe(s: String) -> Option<int> {
+impl read for isize {
+ fn readMaybe(s: String) -> Option<isize> {
s.parse().ok()
}
}
}
}
-// FIXME(#21721) used to be `List<()>` but that can cause
-// certain LLVM versions to abort during optimizations.
-type nillist = List<[u8; 0]>;
+type nillist = List<()>;
// Filled with things that have to be unwound
}
Some(st) => {
let mut v = st.vec.clone();
- v.push_all(&[box List::Cons([], st.vec.last().unwrap().clone())]);
+ v.push_all(&[box List::Cons((), st.vec.last().unwrap().clone())]);
State {
- unique: box List::Cons([], box *st.unique),
+ unique: box List::Cons((), box *st.unique),
vec: v,
- res: r(box List::Cons([], st.res._l.clone())),
+ res: r(box List::Cons((), st.res._l.clone())),
}
}
};
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test equality constraints in a where clause where the type being
+// equated appears in a supertrait.
+
+pub trait Vehicle {
+ type Color;
+
+ fn go(&self) { }
+}
+
+pub trait Box {
+ type Color;
+
+ fn mail(&self) { }
+}
+
+fn a<C:Vehicle+Box>(_: C::Color) {
+ //~^ ERROR ambiguous associated type `Color` in bounds of `C`
+}
+
+fn b<C>(_: C::Color) where C : Vehicle+Box {
+ //~^ ERROR ambiguous associated type `Color` in bounds of `C`
+}
+
+fn c<C>(_: C::Color) where C : Vehicle, C : Box {
+ //~^ ERROR ambiguous associated type `Color` in bounds of `C`
+}
+
+struct D<X>;
+impl<X> D<X> where X : Vehicle {
+ fn d(&self, _: X::Color) where X : Box { }
+ //~^ ERROR ambiguous associated type `Color` in bounds of `X`
+}
+
+trait E<X:Vehicle> {
+ fn e(&self, _: X::Color) where X : Box;
+ //~^ ERROR ambiguous associated type `Color` in bounds of `X`
+
+ fn f(&self, _: X::Color) where X : Box { }
+ //~^ ERROR ambiguous associated type `Color` in bounds of `X`
+}
+
+pub fn main() { }
//~^ ERROR ambiguous associated type
}
+type X = std::ops::Deref::Target;
+//~^ ERROR ambiguous associated type
+
fn main() {
}
//~^ ERROR too many type parameters provided
let _ = S::<'a,isize>::new::<f64>(1, 1.0);
- //~^ ERROR too many lifetime parameters provided
+ //~^ ERROR wrong number of lifetime parameters
let _: S2 = Trait::new::<isize,f64>(1, 1.0);
//~^ ERROR too many type parameters provided
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Check that we check fns appearing in constant declarations.
+// Issue #22382.
+
+const MOVE: fn(&String) -> String = {
+ fn broken(x: &String) -> String {
+ return *x //~ ERROR cannot move
+ }
+ broken
+};
+
+fn main() {
+}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Check that we check fns appearing in constant declarations.
+// Issue #22382.
+
+// How about mutating an immutable vector?
+const MUTATE: fn(&Vec<String>) = {
+ fn broken(x: &Vec<String>) {
+ x.push(format!("this is broken"));
+ //~^ ERROR cannot borrow
+ }
+ broken
+};
+
+fn main() {
+}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Check that we check fns appearing in constant declarations.
+// Issue #22382.
+
+// Returning local references?
+struct DropString {
+ inner: String
+}
+impl Drop for DropString {
+ fn drop(&mut self) {
+ self.inner.clear();
+ self.inner.push_str("dropped");
+ }
+}
+const LOCAL_REF: fn() -> &'static str = {
+ fn broken() -> &'static str {
+ let local = DropString { inner: format!("Some local string") };
+ return &local.inner; //~ ERROR does not live long enough
+ }
+ broken
+};
+
+fn main() {
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Example cycle where a bound on `T` uses a shorthand for `T`. This
+// creates a cycle because we have to know the bounds on `T` to figure
+// out what trait defines `Item`, but we can't know the bounds on `T`
+// without knowing how to handle `T::Item`.
+//
+// Note that in the future cases like this could perhaps become legal,
+// if we got more fine-grained about our cycle detection or changed
+// how we handle `T::Item` resolution.
+
+use std::ops::Add;
+
+// Preamble.
+trait Trait { type Item; }
+
+struct A<T>
+ where T : Trait,
+ T : Add<T::Item>
+ //~^ ERROR illegal recursive type
+{
+ data: T
+}
+
+fn main() {
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test a supertrait cycle where a trait extends itself.
+
+trait Chromosome: Chromosome {
+ //~^ ERROR unsupported cyclic reference
+}
+
+fn main() { }
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test a supertrait cycle where the first trait we find (`A`) is not
+// a direct participant in the cycle.
+
+trait A: B {
+}
+
+trait B: C { }
+
+trait C: B { }
+ //~^ ERROR unsupported cyclic reference
+
+fn main() { }
// Unresolved bounds should still error.
fn align_of<T: NoSuchTrait>() -> usize;
- //~^ ERROR attempt to bound type parameter with a nonexistent trait `NoSuchTrait`
+ //~^ ERROR use of undeclared trait name `NoSuchTrait`
}
fn main() {}
fn main() {
Foo::<isize>::new();
- //~^ ERROR too few type parameters provided
+ //~^ ERROR wrong number of type arguments
}
fn main() {
Vec::<isize, Heap, bool>::new();
- //~^ ERROR too many type parameters provided
+ //~^ ERROR wrong number of type arguments
}
import(); //~ ERROR: unresolved
foo::<A>(); //~ ERROR: undeclared
- //~^ ERROR: undeclared
foo::<C>(); //~ ERROR: undeclared
- //~^ ERROR: undeclared
foo::<D>(); //~ ERROR: undeclared
- //~^ ERROR: undeclared
}
struct Foo;
impl Foo {
fn orange(&self){}
- fn orange(&self){} //~ ERROR error: duplicate definition of value `orange`
+ fn orange(&self){} //~ ERROR error: duplicate method in trait impl
}
fn main() {}
+++ /dev/null
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-mod foo {
- pub struct Foo {
- x: isize,
- y: isize,
- }
-}
-
-impl foo::Foo {
-//~^ ERROR implementations may only be implemented in the same module
- fn bar() {}
-}
-
-fn main() {}
-
fn foo<T>() {
static a: Bar<T> = Bar::What;
- //~^ ERROR: cannot use an outer type parameter in this context
+ //~^ ERROR cannot use an outer type parameter in this context
+ //~| ERROR use of undeclared type name `T`
}
fn main() {
+++ /dev/null
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// ignore-tidy-linelength
-
-pub struct Foo;
-
-mod bar {
- use Foo;
-
- impl Foo { //~ERROR inherent implementations are only allowed on types defined in the current module
- fn baz(&self) {}
- }
-}
-fn main() {}
-
fn main() {
a::Foo::new();
- //~^ ERROR: static method `new` is inaccessible
+ //~^ ERROR: method `new` is inaccessible
//~^^ NOTE: struct `Foo` is private
a::Bar::new();
- //~^ ERROR: static method `new` is inaccessible
+ //~^ ERROR: method `new` is inaccessible
//~^^ NOTE: enum `Bar` is private
}
baz();
//~^ ERROR: unresolved name `baz`. Did you mean to call `self.baz`?
a;
- //~^ ERROR: unresolved name `a`. Did you mean to call `BarTy::a`?
+ //~^ ERROR: unresolved name `a`
}
}
y;
//~^ ERROR: unresolved name `y`. Did you mean `self.y`?
a;
- //~^ ERROR: unresolved name `a`. Did you mean to call `BarTy::a`?
+ //~^ ERROR: unresolved name `a`
bah;
//~^ ERROR: unresolved name `bah`. Did you mean to call `Foo::bah`?
b;
- //~^ ERROR: unresolved name `b`. Did you mean to call `self.b`?
+ //~^ ERROR: unresolved name `b`
}
}
y;
//~^ ERROR: unresolved name `y`. Did you mean `self.y`?
a;
- //~^ ERROR: unresolved name `a`. Did you mean to call `BarTy::a`?
+ //~^ ERROR: unresolved name `a`
bah;
//~^ ERROR: unresolved name `bah`. Did you mean to call `Foo::bah`?
b;
- //~^ ERROR: unresolved name `b`. Did you mean to call `self.b`?
+ //~^ ERROR: unresolved name `b`
}
}
}
trait To {
- // This is a typo, the return type should be `<Dst as From<Self>>::Output`
- fn to<Dst: From<Self>>(
- self
- //~^ error: the trait `core::marker::Sized` is not implemented
- ) ->
+ fn to<Dst: From<Self>>(self) ->
<Dst as From<Self>>::Dst
- //~^ error: the trait `core::marker::Sized` is not implemented
+ //~^ ERROR use of undeclared associated type `From::Dst`
{
- From::from(
- //~^ error: the trait `core::marker::Sized` is not implemented
- self
- )
+ From::from(self)
}
}
use crate1::A::Foo;
fn bar(f: Foo) {
Foo::foo(&f);
- //~^ ERROR: function `foo` is private
+ //~^ ERROR: method `foo` is private
}
}
shave(4);
//~^ ERROR: unresolved name `shave`. Did you mean to call `Groom::shave`?
purr();
- //~^ ERROR: unresolved name `purr`. Did you mean to call `self.purr`?
+ //~^ ERROR: unresolved name `purr`
}
}
fn purr_louder() {
static_method();
- //~^ ERROR: unresolved name `static_method`. Did you mean to call `cat::static_method`
+ //~^ ERROR: unresolved name `static_method`
purr();
- //~^ ERROR: unresolved name `purr`. Did you mean to call `self.purr`?
+ //~^ ERROR: unresolved name `purr`
purr();
- //~^ ERROR: unresolved name `purr`. Did you mean to call `self.purr`?
+ //~^ ERROR: unresolved name `purr`
purr();
- //~^ ERROR: unresolved name `purr`. Did you mean to call `self.purr`?
+ //~^ ERROR: unresolved name `purr`
}
}
fn purr(&self) {
grow_older();
- //~^ ERROR: unresolved name `grow_older`. Did you mean to call `cat::grow_older`
+ //~^ ERROR: unresolved name `grow_older`
shave();
//~^ ERROR: unresolved name `shave`
}
whiskers = 4;
//~^ ERROR: unresolved name `whiskers`. Did you mean `self.whiskers`?
purr_louder();
- //~^ ERROR: unresolved name `purr_louder`. Did you mean to call `cat::purr_louder`
+ //~^ ERROR: unresolved name `purr_louder`
}
}
fn main() {
let foo = 100;
- static y: isize = foo + 1; //~ ERROR: attempt to use a non-constant value in a constant
+ static y: isize = foo + 1;
+ //~^ ERROR attempt to use a non-constant value in a constant
+ //~| ERROR unresolved name `foo`
println!("{}", y);
}
#[derive(Debug)]
enum Stuff {
- Bar = foo //~ ERROR attempt to use a non-constant value in a constant
+ Bar = foo
+ //~^ ERROR attempt to use a non-constant value in a constant
+ //~| ERROR unresolved name `foo`
}
println!("{}", Stuff::Bar);
// except according to those terms.
fn f(x:isize) {
- static child: isize = x + 1; //~ ERROR attempt to use a non-constant value in a constant
+ static child: isize = x + 1;
+ //~^ ERROR attempt to use a non-constant value in a constant
+ //~| ERROR unresolved name `x`
}
fn main() {}
fn getChildOption(&self) -> Option<Box<P>> {
static childVal: Box<P> = self.child.get();
//~^ ERROR attempt to use a non-constant value in a constant
+ //~| ERROR unresolved name `self`
panic!();
}
}
fn main() {
let p = Point::new(0.0, 0.0);
- //~^ ERROR unresolved name `Point::new`
- //~^^ ERROR failed to resolve. Use of undeclared type or module `Point`
println!("{}", p.to_string());
}
Foo { baz: 0 }.bar();
}
- fn bar() { //~ ERROR duplicate definition of value `bar`
+ fn bar() { //~ ERROR duplicate method in trait impl
}
}
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// ignore-tidy-linelength
-
struct Foo {
x: isize
}
-impl Fo { //~ERROR inherent implementations are not allowed for types not defined in the current module
+impl Fo { //~ ERROR use of undeclared type name `Fo`
fn foo() {}
}
+++ /dev/null
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// ignore-tidy-linelength
-
-pub mod a {
- pub struct Foo { a: usize }
-}
-
-pub mod b {
- use a::Foo;
- impl Foo { //~ERROR inherent implementations are only allowed on types defined in the current module
- fn bar(&self) { }
- }
-}
-
-pub fn main() { }
-
-
// ignore-tidy-linelength
-impl B { //~ERROR inherent implementations are not allowed for types not defined in the current module
+impl B { //~ ERROR use of undeclared type name `B`
}
fn main() {
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// aux-build:lint_stability_fields.rs
+#![deny(deprecated)]
+#![allow(dead_code)]
+#![feature(staged_api)]
+#![staged_api]
+
+mod cross_crate {
+ extern crate lint_stability_fields;
+
+ use self::lint_stability_fields::*;
+
+ pub fn foo() {
+ let x = Stable {
+ inherit: 1,
+ override1: 2, //~ WARN use of unstable
+ override2: 3,
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ };
+
+ let _ = x.inherit;
+ let _ = x.override1; //~ WARN use of unstable
+ let _ = x.override2;
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+
+ let Stable {
+ inherit: _,
+ override1: _, //~ WARN use of unstable
+ override2: _
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ } = x;
+ // all fine
+ let Stable { .. } = x;
+
+ let x = Stable2(1, 2, 3);
+
+ let _ = x.0;
+ let _ = x.1; //~ WARN use of unstable
+ let _ = x.2;
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+
+ let Stable2(_,
+ _, //~ WARN use of unstable
+ _)
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ = x;
+ // all fine
+ let Stable2(..) = x;
+
+
+ let x = Unstable { //~ WARN use of unstable
+ inherit: 1, //~ WARN use of unstable
+ override1: 2,
+ override2: 3,
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ };
+
+ let _ = x.inherit; //~ WARN use of unstable
+ let _ = x.override1;
+ let _ = x.override2;
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+
+ let Unstable { //~ WARN use of unstable
+ inherit: _, //~ WARN use of unstable
+ override1: _,
+ override2: _
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ } = x;
+
+ let Unstable //~ WARN use of unstable
+ // the patterns are all fine:
+ { .. } = x;
+
+
+ let x = Unstable2(1, 2, 3); //~ WARN use of unstable
+
+ let _ = x.0; //~ WARN use of unstable
+ let _ = x.1;
+ let _ = x.2;
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+
+ let Unstable2 //~ WARN use of unstable
+ (_, //~ WARN use of unstable
+ _,
+ _)
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ = x;
+ let Unstable2 //~ WARN use of unstable
+ // the patterns are all fine:
+ (..) = x;
+
+
+ let x = Deprecated {
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ inherit: 1,
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ override1: 2,
+ override2: 3, //~ WARN use of unstable
+ };
+
+ let _ = x.inherit;
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ let _ = x.override1;
+ let _ = x.override2; //~ WARN use of unstable
+
+ let Deprecated {
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ inherit: _,
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ override1: _,
+ override2: _ //~ WARN use of unstable
+ } = x;
+
+ let Deprecated
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ // the patterns are all fine:
+ { .. } = x;
+
+ let x = Deprecated2(1, 2, 3);
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+
+ let _ = x.0;
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ let _ = x.1;
+ let _ = x.2; //~ WARN use of unstable
+
+ let Deprecated2
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ (_,
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ _,
+ _) //~ WARN use of unstable
+ = x;
+ let Deprecated2
+ //~^ ERROR use of deprecated item
+ //~^^ WARN use of unstable
+ // the patterns are all fine:
+ (..) = x;
+ }
+}
+
+mod this_crate {
+ #[stable(feature = "rust1", since = "1.0.0")]
+ struct Stable {
+ inherit: u8,
+ #[unstable(feature = "test_feature")]
+ override1: u8,
+ #[deprecated(since = "1.0.0")]
+ #[unstable(feature = "test_feature")]
+ override2: u8,
+ }
+
+ #[stable(feature = "rust1", since = "1.0.0")]
+ struct Stable2(u8,
+ #[stable(feature = "rust1", since = "1.0.0")] u8,
+ #[unstable(feature = "test_feature")] #[deprecated(since = "1.0.0")] u8);
+
+ #[unstable(feature = "test_feature")]
+ struct Unstable {
+ inherit: u8,
+ #[stable(feature = "rust1", since = "1.0.0")]
+ override1: u8,
+ #[deprecated(since = "1.0.0")]
+ #[unstable(feature = "test_feature")]
+ override2: u8,
+ }
+
+ #[unstable(feature = "test_feature")]
+ struct Unstable2(u8,
+ #[stable(feature = "rust1", since = "1.0.0")] u8,
+ #[unstable(feature = "test_feature")] #[deprecated(since = "1.0.0")] u8);
+
+ #[unstable(feature = "test_feature")]
+ #[deprecated(feature = "rust1", since = "1.0.0")]
+ struct Deprecated {
+ inherit: u8,
+ #[stable(feature = "rust1", since = "1.0.0")]
+ override1: u8,
+ #[unstable(feature = "test_feature")]
+ override2: u8,
+ }
+
+ #[unstable(feature = "test_feature")]
+ #[deprecated(feature = "rust1", since = "1.0.0")]
+ struct Deprecated2(u8,
+ #[stable(feature = "rust1", since = "1.0.0")] u8,
+ #[unstable(feature = "test_feature")] u8);
+
+ pub fn foo() {
+ let x = Stable {
+ inherit: 1,
+ override1: 2,
+ override2: 3,
+ //~^ ERROR use of deprecated item
+ };
+
+ let _ = x.inherit;
+ let _ = x.override1;
+ let _ = x.override2;
+ //~^ ERROR use of deprecated item
+
+ let Stable {
+ inherit: _,
+ override1: _,
+ override2: _
+ //~^ ERROR use of deprecated item
+ } = x;
+ // all fine
+ let Stable { .. } = x;
+
+ let x = Stable2(1, 2, 3);
+
+ let _ = x.0;
+ let _ = x.1;
+ let _ = x.2;
+ //~^ ERROR use of deprecated item
+
+ let Stable2(_,
+ _,
+ _)
+ //~^ ERROR use of deprecated item
+ = x;
+ // all fine
+ let Stable2(..) = x;
+
+
+ let x = Unstable {
+ inherit: 1,
+ override1: 2,
+ override2: 3,
+ //~^ ERROR use of deprecated item
+ };
+
+ let _ = x.inherit;
+ let _ = x.override1;
+ let _ = x.override2;
+ //~^ ERROR use of deprecated item
+
+ let Unstable {
+ inherit: _,
+ override1: _,
+ override2: _
+ //~^ ERROR use of deprecated item
+ } = x;
+
+ let Unstable
+ // the patterns are all fine:
+ { .. } = x;
+
+
+ let x = Unstable2(1, 2, 3);
+
+ let _ = x.0;
+ let _ = x.1;
+ let _ = x.2;
+ //~^ ERROR use of deprecated item
+
+ let Unstable2
+ (_,
+ _,
+ _)
+ //~^ ERROR use of deprecated item
+ = x;
+ let Unstable2
+ // the patterns are all fine:
+ (..) = x;
+
+
+ let x = Deprecated {
+ //~^ ERROR use of deprecated item
+ inherit: 1,
+ //~^ ERROR use of deprecated item
+ override1: 2,
+ override2: 3,
+ };
+
+ let _ = x.inherit;
+ //~^ ERROR use of deprecated item
+ let _ = x.override1;
+ let _ = x.override2;
+
+ let Deprecated {
+ //~^ ERROR use of deprecated item
+ inherit: _,
+ //~^ ERROR use of deprecated item
+ override1: _,
+ override2: _
+ } = x;
+
+ let Deprecated
+ //~^ ERROR use of deprecated item
+ // the patterns are all fine:
+ { .. } = x;
+
+ let x = Deprecated2(1, 2, 3);
+ //~^ ERROR use of deprecated item
+
+ let _ = x.0;
+ //~^ ERROR use of deprecated item
+ let _ = x.1;
+ let _ = x.2;
+
+ let Deprecated2
+ //~^ ERROR use of deprecated item
+ (_,
+ //~^ ERROR use of deprecated item
+ _,
+ _)
+ = x;
+ let Deprecated2
+ //~^ ERROR use of deprecated item
+ // the patterns are all fine:
+ (..) = x;
+ }
+}
+
+fn main() {}
use lint_stability::*;
fn test() {
+ type Foo = MethodTester;
let foo = MethodTester;
deprecated(); //~ ERROR use of deprecated item
foo.method_deprecated(); //~ ERROR use of deprecated item
+ Foo::method_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo>::method_deprecated(&foo); //~ ERROR use of deprecated item
foo.trait_deprecated(); //~ ERROR use of deprecated item
+ Trait::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo>::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo as Trait>::trait_deprecated(&foo); //~ ERROR use of deprecated item
deprecated_text(); //~ ERROR use of deprecated item: text
foo.method_deprecated_text(); //~ ERROR use of deprecated item: text
+ Foo::method_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo>::method_deprecated_text(&foo); //~ ERROR use of deprecated item: text
foo.trait_deprecated_text(); //~ ERROR use of deprecated item: text
+ Trait::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo as Trait>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
deprecated_unstable(); //~ ERROR use of deprecated item
//~^ WARNING use of unstable library feature
foo.method_deprecated_unstable(); //~ ERROR use of deprecated item
//~^ WARNING use of unstable library feature
+ Foo::method_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
+ <Foo>::method_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
foo.trait_deprecated_unstable(); //~ ERROR use of deprecated item
//~^ WARNING use of unstable library feature
+ Trait::trait_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
+ <Foo>::trait_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
+ <Foo as Trait>::trait_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
deprecated_unstable_text(); //~ ERROR use of deprecated item: text
//~^ WARNING use of unstable library feature
foo.method_deprecated_unstable_text(); //~ ERROR use of deprecated item: text
//~^ WARNING use of unstable library feature
+ Foo::method_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
+ <Foo>::method_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
foo.trait_deprecated_unstable_text(); //~ ERROR use of deprecated item: text
//~^ WARNING use of unstable library feature
+ Trait::trait_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
+ <Foo>::trait_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
+ <Foo as Trait>::trait_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
unstable(); //~ WARNING use of unstable library feature
foo.method_unstable(); //~ WARNING use of unstable library feature
+ Foo::method_unstable(&foo); //~ WARNING use of unstable library feature
+ <Foo>::method_unstable(&foo); //~ WARNING use of unstable library feature
foo.trait_unstable(); //~ WARNING use of unstable library feature
+ Trait::trait_unstable(&foo); //~ WARNING use of unstable library feature
+ <Foo>::trait_unstable(&foo); //~ WARNING use of unstable library feature
+ <Foo as Trait>::trait_unstable(&foo); //~ WARNING use of unstable library feature
- unstable_text(); //~ WARNING use of unstable library feature 'test_feature': text
- foo.method_unstable_text(); //~ WARNING use of unstable library feature 'test_feature': text
- foo.trait_unstable_text(); //~ WARNING use of unstable library feature 'test_feature': text
+ unstable_text();
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ foo.method_unstable_text();
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ Foo::method_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ <Foo>::method_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ foo.trait_unstable_text();
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ Trait::trait_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ <Foo>::trait_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ <Foo as Trait>::trait_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
stable();
foo.method_stable();
+ Foo::method_stable(&foo);
+ <Foo>::method_stable(&foo);
foo.trait_stable();
+ Trait::trait_stable(&foo);
+ <Foo>::trait_stable(&foo);
+ <Foo as Trait>::trait_stable(&foo);
stable_text();
foo.method_stable_text();
+ Foo::method_stable_text(&foo);
+ <Foo>::method_stable_text(&foo);
foo.trait_stable_text();
+ Trait::trait_stable_text(&foo);
+ <Foo>::trait_stable_text(&foo);
+ <Foo as Trait>::trait_stable_text(&foo);
let _ = DeprecatedStruct { i: 0 }; //~ ERROR use of deprecated item
let _ = DeprecatedUnstableStruct { i: 0 }; //~ ERROR use of deprecated item
macro_test_arg!(macro_test_arg!(deprecated_text())); //~ ERROR use of deprecated item: text
}
- fn test_method_param<F: Trait>(foo: F) {
+ fn test_method_param<Foo: Trait>(foo: Foo) {
foo.trait_deprecated(); //~ ERROR use of deprecated item
+ Trait::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo>::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo as Trait>::trait_deprecated(&foo); //~ ERROR use of deprecated item
foo.trait_deprecated_text(); //~ ERROR use of deprecated item: text
+ Trait::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo as Trait>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
foo.trait_deprecated_unstable(); //~ ERROR use of deprecated item
//~^ WARNING use of unstable library feature
+ Trait::trait_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
+ <Foo>::trait_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
+ <Foo as Trait>::trait_deprecated_unstable(&foo); //~ ERROR use of deprecated item
+ //~^ WARNING use of unstable library feature
foo.trait_deprecated_unstable_text(); //~ ERROR use of deprecated item: text
//~^ WARNING use of unstable library feature
+ Trait::trait_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
+ <Foo>::trait_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
+ <Foo as Trait>::trait_deprecated_unstable_text(&foo); //~ ERROR use of deprecated item: text
+ //~^ WARNING use of unstable library feature
foo.trait_unstable(); //~ WARNING use of unstable library feature
- foo.trait_unstable_text(); //~ WARNING use of unstable library feature 'test_feature': text
+ Trait::trait_unstable(&foo); //~ WARNING use of unstable library feature
+ <Foo>::trait_unstable(&foo); //~ WARNING use of unstable library feature
+ <Foo as Trait>::trait_unstable(&foo); //~ WARNING use of unstable library feature
+ foo.trait_unstable_text();
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ Trait::trait_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ <Foo>::trait_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
+ <Foo as Trait>::trait_unstable_text(&foo);
+ //~^ WARNING use of unstable library feature 'test_feature': text
foo.trait_stable();
+ Trait::trait_stable(&foo);
+ <Foo>::trait_stable(&foo);
+ <Foo as Trait>::trait_stable(&foo);
}
fn test_method_object(foo: &Trait) {
foo.trait_deprecated_unstable_text(); //~ ERROR use of deprecated item: text
//~^ WARNING use of unstable library feature
foo.trait_unstable(); //~ WARNING use of unstable library feature
- foo.trait_unstable_text(); //~ WARNING use of unstable library feature 'test_feature': text
+ foo.trait_unstable_text();
+ //~^ WARNING use of unstable library feature 'test_feature': text
foo.trait_stable();
}
#[unstable(feature = "test_feature")]
#[deprecated(since = "1.0.0")]
- pub struct DeprecatedStruct { i: isize }
+ pub struct DeprecatedStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] i: isize
+ }
#[unstable(feature = "test_feature")]
- pub struct UnstableStruct { i: isize }
+ pub struct UnstableStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] i: isize
+ }
#[stable(feature = "rust1", since = "1.0.0")]
- pub struct StableStruct { i: isize }
+ pub struct StableStruct {
+ #[stable(feature = "test_feature", since = "1.0.0")] i: isize
+ }
#[unstable(feature = "test_feature")]
#[deprecated(since = "1.0.0")]
// errors, because other stability attributes now have meaning
// only *across* crates, not within a single crate.
+ type Foo = MethodTester;
let foo = MethodTester;
deprecated(); //~ ERROR use of deprecated item
foo.method_deprecated(); //~ ERROR use of deprecated item
+ Foo::method_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo>::method_deprecated(&foo); //~ ERROR use of deprecated item
foo.trait_deprecated(); //~ ERROR use of deprecated item
+ Trait::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo>::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo as Trait>::trait_deprecated(&foo); //~ ERROR use of deprecated item
deprecated_text(); //~ ERROR use of deprecated item: text
foo.method_deprecated_text(); //~ ERROR use of deprecated item: text
+ Foo::method_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo>::method_deprecated_text(&foo); //~ ERROR use of deprecated item: text
foo.trait_deprecated_text(); //~ ERROR use of deprecated item: text
+ Trait::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo as Trait>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
unstable();
foo.method_unstable();
+ Foo::method_unstable(&foo);
+ <Foo>::method_unstable(&foo);
foo.trait_unstable();
+ Trait::trait_unstable(&foo);
+ <Foo>::trait_unstable(&foo);
+ <Foo as Trait>::trait_unstable(&foo);
unstable_text();
foo.method_unstable_text();
+ Foo::method_unstable_text(&foo);
+ <Foo>::method_unstable_text(&foo);
foo.trait_unstable_text();
+ Trait::trait_unstable_text(&foo);
+ <Foo>::trait_unstable_text(&foo);
+ <Foo as Trait>::trait_unstable_text(&foo);
stable();
foo.method_stable();
+ Foo::method_stable(&foo);
+ <Foo>::method_stable(&foo);
foo.trait_stable();
+ Trait::trait_stable(&foo);
+ <Foo>::trait_stable(&foo);
+ <Foo as Trait>::trait_stable(&foo);
stable_text();
foo.method_stable_text();
+ Foo::method_stable_text(&foo);
+ <Foo>::method_stable_text(&foo);
foo.trait_stable_text();
+ Trait::trait_stable_text(&foo);
+ <Foo>::trait_stable_text(&foo);
+ <Foo as Trait>::trait_stable_text(&foo);
let _ = DeprecatedStruct { i: 0 }; //~ ERROR use of deprecated item
let _ = UnstableStruct { i: 0 };
let _ = StableTupleStruct (1);
}
- fn test_method_param<F: Trait>(foo: F) {
+ fn test_method_param<Foo: Trait>(foo: Foo) {
foo.trait_deprecated(); //~ ERROR use of deprecated item
+ Trait::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo>::trait_deprecated(&foo); //~ ERROR use of deprecated item
+ <Foo as Trait>::trait_deprecated(&foo); //~ ERROR use of deprecated item
foo.trait_deprecated_text(); //~ ERROR use of deprecated item: text
+ Trait::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
+ <Foo as Trait>::trait_deprecated_text(&foo); //~ ERROR use of deprecated item: text
foo.trait_unstable();
+ Trait::trait_unstable(&foo);
+ <Foo>::trait_unstable(&foo);
+ <Foo as Trait>::trait_unstable(&foo);
foo.trait_unstable_text();
+ Trait::trait_unstable_text(&foo);
+ <Foo>::trait_unstable_text(&foo);
+ <Foo as Trait>::trait_unstable_text(&foo);
foo.trait_stable();
+ Trait::trait_stable(&foo);
+ <Foo>::trait_stable(&foo);
+ <Foo as Trait>::trait_stable(&foo);
}
fn test_method_object(foo: &Trait) {
use std::marker::PhantomFn;
struct Bar;
+struct Bar2;
+struct Bar3;
#[allow(unsafe_code)]
mod allowed_unsafe {
unsafe fn provided_override(&self) {} //~ ERROR: implementation of an `unsafe` method
}
+
+#[allow(unsafe_code)]
+trait A {
+ unsafe fn allowed_unsafe(&self);
+ unsafe fn allowed_unsafe_provided(&self) {}
+}
+
+#[allow(unsafe_code)]
+impl Baz for Bar2 {
+ unsafe fn baz(&self) {}
+ unsafe fn provided_override(&self) {}
+}
+
+impl Baz for Bar3 {
+ #[allow(unsafe_code)]
+ unsafe fn baz(&self) {}
+ unsafe fn provided_override(&self) {} //~ ERROR: implementation of an `unsafe` method
+}
+
+#[allow(unsafe_code)]
+unsafe trait B {
+ fn dummy(&self) {}
+}
+
+trait C {
+ #[allow(unsafe_code)]
+ unsafe fn baz(&self);
+ unsafe fn provided(&self) {} //~ ERROR: implementation of an `unsafe` method
+}
+
+impl C for Bar {
+ #[allow(unsafe_code)]
+ unsafe fn baz(&self) {}
+ unsafe fn provided(&self) {} //~ ERROR: implementation of an `unsafe` method
+}
+
+impl C for Bar2 {
+ unsafe fn baz(&self) {} //~ ERROR: implementation of an `unsafe` method
+}
+
+trait D {
+ #[allow(unsafe_code)]
+ unsafe fn unsafe_provided(&self) {}
+}
+
+impl D for Bar {}
+
fn main() {
unsafe {} //~ ERROR: usage of an `unsafe` block
// Cause an error. It shouldn't have any macro backtrace frames.
fn bar(&self) { }
- fn bar(&self) { } //~ ERROR duplicate definition
+ fn bar(&self) { } //~ ERROR duplicate method
}
fn main() { }
mod foo {
mod baz {
struct Test;
- impl Add for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Clone for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Iterator for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl ToString for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Writer for Test {} //~ ERROR: attempt to implement a nonexistent trait
+ impl Add for Test {} //~ ERROR: use of undeclared trait
+ impl Clone for Test {} //~ ERROR: use of undeclared trait
+ impl Iterator for Test {} //~ ERROR: use of undeclared trait
+ impl ToString for Test {} //~ ERROR: use of undeclared trait
+ impl Writer for Test {} //~ ERROR: use of undeclared trait
fn foo() {
drop(2) //~ ERROR: unresolved name
}
struct Test;
- impl Add for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Clone for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Iterator for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl ToString for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Writer for Test {} //~ ERROR: attempt to implement a nonexistent trait
+ impl Add for Test {} //~ ERROR: use of undeclared trait
+ impl Clone for Test {} //~ ERROR: use of undeclared trait
+ impl Iterator for Test {} //~ ERROR: use of undeclared trait
+ impl ToString for Test {} //~ ERROR: use of undeclared trait
+ impl Writer for Test {} //~ ERROR: use of undeclared trait
fn foo() {
drop(2) //~ ERROR: unresolved name
#[no_implicit_prelude]
mod qux_inner {
struct Test;
- impl Add for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Clone for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Iterator for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl ToString for Test {} //~ ERROR: attempt to implement a nonexistent trait
- impl Writer for Test {} //~ ERROR: attempt to implement a nonexistent trait
+ impl Add for Test {} //~ ERROR: use of undeclared trait
+ impl Clone for Test {} //~ ERROR: use of undeclared trait
+ impl Iterator for Test {} //~ ERROR: use of undeclared trait
+ impl ToString for Test {} //~ ERROR: use of undeclared trait
+ impl Writer for Test {} //~ ERROR: use of undeclared trait
fn foo() {
drop(2) //~ ERROR: unresolved name
// fail with the same error message).
struct Test;
-impl Add for Test {} //~ ERROR: attempt to implement a nonexistent trait
-impl Clone for Test {} //~ ERROR: attempt to implement a nonexistent trait
-impl Iterator for Test {} //~ ERROR: attempt to implement a nonexistent trait
-impl ToString for Test {} //~ ERROR: attempt to implement a nonexistent trait
-impl Writer for Test {} //~ ERROR: attempt to implement a nonexistent trait
+impl Add for Test {} //~ ERROR: use of undeclared trait
+impl Clone for Test {} //~ ERROR: use of undeclared trait
+impl Iterator for Test {} //~ ERROR: use of undeclared trait
+impl ToString for Test {} //~ ERROR: use of undeclared trait
+impl Writer for Test {} //~ ERROR: use of undeclared trait
fn main() {
drop(2) //~ ERROR: unresolved name
trait NewTrait : SomeNonExistentTrait {}
-//~^ ERROR attempt to derive a nonexistent trait `SomeNonExistentTrait`
+//~^ ERROR use of undeclared trait name `SomeNonExistentTrait`
impl SomeNonExistentTrait for isize {}
-//~^ ERROR attempt to implement a nonexistent trait `SomeNonExistentTrait`
+//~^ ERROR use of undeclared trait name `SomeNonExistentTrait`
fn f<T:SomeNonExistentTrait>() {}
-//~^ ERROR attempt to bound type parameter with a nonexistent trait `SomeNonExistentTrait`
+//~^ ERROR use of undeclared trait name `SomeNonExistentTrait`
+++ /dev/null
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// Test calling methods on an impl for a bare trait. This test checks trait impls
-// must be in the same module as the trait.
-
-mod Foo {
- trait T {}
-}
-
-mod Bar {
- impl<'a> ::Foo::T+'a { //~ERROR: inherent implementations may only be implemented in the same
- fn foo(&self) {}
- }
-}
-
-fn main() {}
trait A {
}
-impl A for a { //~ERROR found module name used as a type
+impl A for a { //~ ERROR use of undeclared type name `a`
}
fn main() {
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// ignore-tidy-linelength
-
-impl<T> Option<T> { //~ERROR inherent implementations are not allowed for types not defined in the current module
+impl<T> Option<T> {
+//~^ ERROR cannot associate methods with a type outside the crate the type is defined in
pub fn foo(&self) { }
}
fn main() {
<String as IntoCow>::into_cow("foo".to_string());
- //~^ ERROR wrong number of type arguments: expected 1, found 0
+ //~^ ERROR too few type parameters provided: expected 1 parameter(s)
}
#![feature(unboxed_closures)]
-fn f<F:Nonexist(isize) -> isize>(x: F) {} //~ ERROR nonexistent trait `Nonexist`
+fn f<F:Nonexist(isize) -> isize>(x: F) {} //~ ERROR undeclared trait name `Nonexist`
type Typedef = isize;
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+pub struct T;
+
+#[unsafe_no_drop_flag]
+//~^ ERROR unsafe_no_drop_flag has unstable semantics and may be removed
+pub struct S {
+ pub x: T,
+}
+
+impl Drop for S {
+ fn drop(&mut self) {}
+}
+
+pub fn main() {}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Issue #21370
+
+macro_rules! test {
+ ($wrong:t_ty) => () //~ ERROR invalid fragment specifier `t_ty`
+}
+
+fn main() { }
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+macro_rules! test {
+ ($e:expr +) => () //~ ERROR not allowed for `expr` fragments
+}
+
+fn main() { }
use Trait::foo;
//~^ ERROR `foo` is not directly importable
use Foo::new;
-//~^ ERROR `new` is not directly importable
+//~^ ERROR unresolved import `Foo::new`. Not a module `Foo`
pub trait Trait {
fn foo();
extern crate rustc;
extern crate rustc_driver;
+extern crate rustc_lint;
extern crate syntax;
use rustc::session::{build_session, Session};
let descriptions = Registry::new(&rustc::diagnostics::DIAGNOSTICS);
let sess = build_session(opts, None, descriptions);
+ rustc_lint::register_builtins(&mut sess.lint_store.borrow_mut(), Some(&sess));
sess
}
--- /dev/null
+-include ../tools.mk
+
+all: lib.rs ext.rs
+ $(HOST_RPATH_ENV) $(RUSTC) ext.rs
+ $(HOST_RPATH_ENV) $(RUSTDOC) -L $(TMPDIR) -w html -o $(TMPDIR)/doc lib.rs
+ $(HTMLDOCCK) $(TMPDIR)/doc lib.rs
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![crate_type="lib"]
+
+pub trait Trait {
+ fn provided(&self) {}
+}
+
+pub struct Struct;
+
+impl Trait for Struct {
+ fn provided(&self) {}
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+extern crate ext;
+
+// @count lib/struct.Struct.html '//*[@id="method.provided"]' 1
+pub use ext::Struct;
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Various uses of `T::Item` syntax where the bound that supplies
+// `Item` originates in a where-clause, not the declaration of
+// `T`. Issue #20300.
+
+use std::marker::{MarkerTrait, PhantomData};
+use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT};
+use std::sync::atomic::Ordering::SeqCst;
+
+static COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
+
+// Preamble.
+trait Trait : MarkerTrait { type Item; }
+struct Struct;
+impl Trait for Struct {
+ type Item = u32;
+}
+
+// Where-clause attached on the method which declares `T`.
+struct A;
+impl A {
+ fn foo<T>(_x: T::Item) where T: Trait {
+ COUNTER.fetch_add(1, SeqCst);
+ }
+}
+
+// Where-clause attached on the method to a parameter from the struct.
+struct B<T>(PhantomData<T>);
+impl<T> B<T> {
+ fn foo(_x: T::Item) where T: Trait {
+ COUNTER.fetch_add(10, SeqCst);
+ }
+}
+
+// Where-clause attached to free fn.
+fn c<T>(_: T::Item) where T : Trait {
+ COUNTER.fetch_add(100, SeqCst);
+}
+
+// Where-clause attached to defaulted and non-defaulted trait method.
+trait AnotherTrait {
+ fn method<T>(&self, _: T::Item) where T: Trait;
+ fn default_method<T>(&self, _: T::Item) where T: Trait {
+ COUNTER.fetch_add(1000, SeqCst);
+ }
+}
+struct D;
+impl AnotherTrait for D {
+ fn method<T>(&self, _: T::Item) where T: Trait {
+ COUNTER.fetch_add(10000, SeqCst);
+ }
+}
+
+// Where-clause attached to trait and impl containing the method.
+trait YetAnotherTrait<T>
+ where T : Trait
+{
+ fn method(&self, _: T::Item);
+ fn default_method(&self, _: T::Item) {
+ COUNTER.fetch_add(100000, SeqCst);
+ }
+}
+struct E<T>(PhantomData<T>);
+impl<T> YetAnotherTrait<T> for E<T>
+ where T : Trait
+{
+ fn method(&self, _: T::Item) {
+ COUNTER.fetch_add(1000000, SeqCst);
+ }
+}
+
+// Where-clause attached to inherent impl containing the method.
+struct F<T>(PhantomData<T>);
+impl<T> F<T> where T : Trait {
+ fn method(&self, _: T::Item) {
+ COUNTER.fetch_add(10000000, SeqCst);
+ }
+}
+
+// Where-clause attached to struct.
+#[allow(dead_code)]
+struct G<T> where T : Trait {
+ data: T::Item,
+ phantom: PhantomData<T>,
+}
+
+fn main() {
+ A::foo::<Struct>(22);
+ B::<Struct>::foo(22);
+ c::<Struct>(22);
+ D.method::<Struct>(22);
+ D.default_method::<Struct>(22);
+ E(PhantomData::<Struct>).method(22);
+ E(PhantomData::<Struct>).default_method(22);
+ F(PhantomData::<Struct>).method(22);
+ G::<Struct> { data: 22, phantom: PhantomData };
+ assert_eq!(COUNTER.load(SeqCst), 11111111);
+}
let mut v = vec!(1);
v.push_val(2);
v.push_val(3);
- assert_eq!(v, vec!(1, 2, 3));
+ assert_eq!(v, [1, 2, 3]);
}
pub fn main() {
let mut the_vec = vec!(1, 2, 3, 100);
bar(&mut the_vec);
- assert_eq!(the_vec, vec!(100, 3, 2, 1));
+ assert_eq!(the_vec, [100, 3, 2, 1]);
}
pub fn main() {
let mut the_vec = vec!(1, 2, 3, 100);
bar(&mut the_vec);
- assert_eq!(the_vec, vec!(100, 3, 2, 1));
+ assert_eq!(the_vec, [100, 3, 2, 1]);
}
+++ /dev/null
-// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![feature(macro_rules)]
-
-use std::borrow::{Cow, IntoCow};
-use std::collections::BitVec;
-use std::default::Default;
-use std::iter::FromIterator;
-use std::ops::Add;
-use std::option::IntoIter as OptionIter;
-use std::rand::Rand;
-use std::rand::XorShiftRng as DummyRng;
-// FIXME the glob std::prelude::*; import of Vec is missing non-static inherent methods.
-use std::vec::Vec;
-
-#[derive(PartialEq, Eq)]
-struct Newt<T>(T);
-
-fn id<T>(x: T) -> T { x }
-fn eq<T: Eq>(a: T, b: T) -> bool { a == b }
-fn u8_as_i8(x: u8) -> i8 { x as i8 }
-fn odd(x: uint) -> bool { x % 2 == 1 }
-fn dummy_rng() -> DummyRng { DummyRng::new_unseeded() }
-
-trait Size: Sized {
- fn size() -> uint { std::mem::size_of::<Self>() }
-}
-impl<T> Size for T {}
-
-macro_rules! tests {
- ($($expr:expr, $ty:ty, ($($test:expr),*);)+) => (pub fn main() {$({
- const C: $ty = $expr;
- static S: $ty = $expr;
- assert!(eq(C($($test),*), $expr($($test),*)));
- assert!(eq(S($($test),*), $expr($($test),*)));
- assert!(eq(C($($test),*), S($($test),*)));
- })+})
-}
-
-tests! {
- // Free function.
- id, fn(int) -> int, (5);
- id::<int>, fn(int) -> int, (5);
-
- // Enum variant constructor.
- Some, fn(int) -> Option<int>, (5);
- Some::<int>, fn(int) -> Option<int>, (5);
-
- // Tuple struct constructor.
- Newt, fn(int) -> Newt<int>, (5);
- Newt::<int>, fn(int) -> Newt<int>, (5);
-
- // Inherent static methods.
- Vec::new, fn() -> Vec<()>, ();
- Vec::<()>::new, fn() -> Vec<()>, ();
- Vec::with_capacity, fn(uint) -> Vec<()>, (5);
- Vec::<()>::with_capacity, fn(uint) -> Vec<()>, (5);
- BitVec::from_fn, fn(uint, fn(uint) -> bool) -> BitVec, (5, odd);
- BitVec::from_fn::<fn(uint) -> bool>, fn(uint, fn(uint) -> bool) -> BitVec, (5, odd);
-
- // Inherent non-static method.
- Vec::map_in_place, fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>, (vec![b'f', b'o', b'o'], u8_as_i8);
- Vec::map_in_place::<i8, fn(u8) -> i8>, fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>,
- (vec![b'f', b'o', b'o'], u8_as_i8);
- // FIXME these break with "type parameter might not appear here pointing at `<u8>`.
- // Vec::<u8>::map_in_place: fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>
- // , (vec![b'f', b'o', b'o'], u8_as_i8);
- // Vec::<u8>::map_in_place::<i8, fn(u8) -> i8>: fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>
- // , (vec![b'f', b'o', b'o'], u8_as_i8);
-
- // Trait static methods.
- <bool as Size>::size, fn() -> uint, ();
- Default::default, fn() -> int, ();
- <int as Default>::default, fn() -> int, ();
- Rand::rand, fn(&mut DummyRng) -> int, (&mut dummy_rng());
- <int as Rand>::rand, fn(&mut DummyRng) -> int, (&mut dummy_rng());
- Rand::rand::<DummyRng>, fn(&mut DummyRng) -> int, (&mut dummy_rng());
- <int as Rand>::rand::<DummyRng>, fn(&mut DummyRng) -> int, (&mut dummy_rng());
-
- // Trait non-static methods.
- Clone::clone, fn(&int) -> int, (&5);
- <int as Clone>::clone, fn(&int) -> int, (&5);
- FromIterator::from_iter, fn(OptionIter<int>) -> Vec<int>, (Some(5).into_iter());
- <Vec<_> as FromIterator<_>>::from_iter, fn(OptionIter<int>) -> Vec<int>,
- (Some(5).into_iter());
- <Vec<int> as FromIterator<_>>::from_iter, fn(OptionIter<int>) -> Vec<int>,
- (Some(5).into_iter());
- FromIterator::from_iter::<OptionIter<int>>, fn(OptionIter<int>) -> Vec<int>,
- (Some(5).into_iter());
- <Vec<int> as FromIterator<_>>::from_iter::<OptionIter<int>>, fn(OptionIter<int>) -> Vec<int>,
- (Some(5).into_iter());
- Add::add, fn(i32, i32) -> i32, (5, 6);
- <i32 as Add<_>>::add, fn(i32, i32) -> i32, (5, 6);
- <i32 as Add<i32>>::add, fn(i32, i32) -> i32, (5, 6);
- <String as IntoCow<_>>::into_cow, fn(String) -> Cow<'static, str>,
- ("foo".to_string());
- <String as IntoCow<'static, _>>::into_cow, fn(String) -> Cow<'static, str>,
- ("foo".to_string());
-}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Regression test for #15477. This test just needs to compile.
+
+use std::marker::PhantomFn;
+
+trait Chromosome<X: Chromosome<i32>> : PhantomFn<(Self,X)> {
+}
+
+fn main() { }
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test a case where a supertrait references a type that references
+// the original trait. This poses no problem at the moment.
+
+trait Chromosome: Get<Struct<i32>> {
+}
+
+trait Get<A> {
+ fn get(&self) -> A;
+}
+
+struct Struct<C:Chromosome> { c: C }
+
+fn main() { }
// except according to those terms.
use std::num::FromPrimitive;
-use std::int;
+use std::isize;
#[derive(PartialEq, FromPrimitive, Debug)]
enum A {
- Foo = int::MAX,
+ Foo = isize::MAX,
Bar = 1,
Baz = 3,
Qux,
}
pub fn main() {
- let x: Option<A> = FromPrimitive::from_int(int::MAX);
+ let x: Option<A> = FromPrimitive::from_int(isize::MAX);
assert_eq!(x, Some(A::Foo));
let x: Option<A> = FromPrimitive::from_int(1);
// except according to those terms.
use std::env::*;
+use std::path::PathBuf;
#[cfg(unix)]
fn main() {
let oldhome = var("HOME");
set_var("HOME", "/home/MountainView");
- assert!(home_dir() == Some(Path::new("/home/MountainView")));
+ assert!(home_dir() == Some(PathBuf::new("/home/MountainView")));
remove_var("HOME");
if cfg!(target_os = "android") {
assert!(home_dir().is_some());
set_var("HOME", "/home/MountainView");
- assert!(home_dir() == Some(Path::new("/home/MountainView")));
+ assert!(home_dir() == Some(PathBuf::new("/home/MountainView")));
remove_var("HOME");
set_var("USERPROFILE", "/home/MountainView");
- assert!(home_dir() == Some(Path::new("/home/MountainView")));
+ assert!(home_dir() == Some(PathBuf::new("/home/MountainView")));
set_var("HOME", "/home/MountainView");
set_var("USERPROFILE", "/home/PaloAlto");
- assert!(home_dir() == Some(Path::new("/home/MountainView")));
+ assert!(home_dir() == Some(PathBuf::new("/home/MountainView")));
}
}
pub fn main() {
- assert_eq!(vec_utils::map_(&vec!(1,2,3), |&x| x+1), vec!(2,3,4));
+ assert_eq!(vec_utils::map_(&vec!(1,2,3), |&x| x+1), [2,3,4]);
}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Ensure that an user-defined type admits multiple inherent methods
+// with the same name, which can be called on values that have a
+// precise enough type to allow distinguishing between the methods.
+
+struct Foo<T>(T);
+
+impl Foo<usize> {
+ fn bar(&self) -> i32 { self.0 as i32 }
+}
+
+impl Foo<isize> {
+ fn bar(&self) -> i32 { -(self.0 as i32) }
+}
+
+fn main() {
+ let foo_u = Foo::<usize>(5);
+ assert_eq!(foo_u.bar(), 5);
+
+ let foo_i = Foo::<isize>(3);
+ assert_eq!(foo_i.bar(), -3);
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+struct Foo;
+
+trait Trait {
+ fn bar(&self);
+}
+
+// Inherent impls should be preferred over trait ones.
+impl Foo {
+ fn bar(&self) {}
+}
+
+impl Trait {
+ fn baz(_: &Foo) {}
+}
+
+impl Trait for Foo {
+ fn bar(&self) { panic!("wrong method called!") }
+}
+
+fn main() {
+ Foo.bar();
+ Foo::bar(&Foo);
+ <Foo>::bar(&Foo);
+
+ // Should work even if Trait::baz doesn't exist.
+ // N.B: `<Trait>::bar` would be ambiguous.
+ <Trait>::baz(&Foo);
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+mod foo {
+ pub struct Point {
+ pub x: i32,
+ pub y: i32,
+ }
+}
+
+impl foo::Point {
+ fn x(&self) -> i32 { self.x }
+}
+
+fn main() {
+ assert_eq!((foo::Point { x: 1, y: 3}).x(), 1);
+}
--- /dev/null
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+pub struct Foo;
+
+mod bar {
+ use Foo;
+
+ impl Foo {
+ fn baz(&self) {}
+ }
+}
+fn main() {}
+
-// no-prefer-dynamic
-
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-use std::slice::SliceExt;
-use std::old_io::{fs, USER_RWX};
-use std::process;
+// no-prefer-dynamic
+
+#![feature(fs, process, env, path, rand)]
+
use std::env;
-use std::old_path::BytesContainer;
+use std::fs;
+use std::process;
use std::rand::random;
+use std::str;
fn main() {
// If we're the child, make sure we were invoked correctly
fn test() {
// If we're the parent, copy our own binary to a new directory.
let my_path = env::current_exe().unwrap();
- let my_dir = my_path.dir_path();
+ let my_dir = my_path.parent().unwrap();
let random_u32: u32 = random();
- let child_dir = Path::new(my_dir.join(format!("issue-15149-child-{}",
- random_u32)));
- fs::mkdir(&child_dir, USER_RWX).unwrap();
+ let child_dir = my_dir.join(&format!("issue-15149-child-{}", random_u32));
+ fs::create_dir(&child_dir).unwrap();
- let child_path = child_dir.join(format!("mytest{}",
- env::consts::EXE_SUFFIX));
+ let child_path = child_dir.join(&format!("mytest{}",
+ env::consts::EXE_SUFFIX));
fs::copy(&my_path, &child_path).unwrap();
// Append the new directory to our own PATH.
let path = {
let mut paths: Vec<_> = env::split_paths(&env::var_os("PATH").unwrap()).collect();
- paths.push(child_dir.clone());
+ paths.push(child_dir.to_path_buf());
env::join_paths(paths.iter()).unwrap()
};
assert!(child_output.status.success(),
format!("child assertion failed\n child stdout:\n {}\n child stderr:\n {}",
- child_output.stdout.container_as_str().unwrap(),
- child_output.stderr.container_as_str().unwrap()));
+ str::from_utf8(&child_output.stdout).unwrap(),
+ str::from_utf8(&child_output.stderr).unwrap()));
- fs::rmdir_recursive(&child_dir).unwrap();
+ fs::remove_dir_all(&child_dir).unwrap();
}
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-use std::old_io::{process, Command};
+use std::process::Command;
use std::env;
fn main() {
}
fn test() {
- let status = Command::new(env::current_exe().unwrap())
+ let status = Command::new(&env::current_exe().unwrap())
.arg("foo").arg("")
- .stdout(process::InheritFd(1))
- .stderr(process::InheritFd(2))
.status().unwrap();
assert!(status.success());
}
let mut dropped = false;
{
let leak = Leak { dropped: &mut dropped };
- // FIXME(#21721) "hack" used to be () but that can cause
- // certain LLVM versions to abort during optimizations.
- for (_, leaked) in Some(("hack", leak)).into_iter() {}
+ for ((), leaked) in Some(((), leak)).into_iter() {}
}
assert!(dropped);
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// ignore-windows currently windows requires UTF-8 for spawning processes
-
-use std::old_io::Command;
-use std::env;
-
+#[cfg(unix)]
fn main() {
+ use std::process::Command;
+ use std::env;
+ use std::os::unix::prelude::*;
+ use std::ffi::OsStr;
+
if env::args().len() == 1 {
- assert!(Command::new(env::current_exe().unwrap()).arg(b"\xff")
+ assert!(Command::new(&env::current_exe().unwrap())
+ .arg(<OsStr as OsStrExt>::from_bytes(b"\xff"))
.status().unwrap().success())
}
}
+
+#[cfg(windows)]
+fn main() {}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn main() {
+ static NONE: Option<((), &'static u8)> = None;
+ let ptr = unsafe {
+ *(&NONE as *const _ as *const *const u8)
+ };
+ assert!(ptr.is_null());
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Regression test for Issue #22536: If a type implements Copy, then
+// moving it must not zero the original memory.
+
+trait Resources {
+ type Buffer: Copy;
+ fn foo(&self) {}
+}
+
+struct BufferHandle<R: Resources> {
+ raw: <R as Resources>::Buffer,
+}
+impl<R: Resources> Copy for BufferHandle<R> {}
+
+enum Res {}
+impl Resources for Res {
+ type Buffer = u32;
+}
+impl Copy for Res { }
+
+fn main() {
+ let b: BufferHandle<Res> = BufferHandle { raw: 1 };
+ let c = b;
+ assert_eq!(c.raw, b.raw)
+}
let mut table = HashMap::new();
table.insert("one".to_string(), 1);
table.insert("two".to_string(), 2);
- assert!(check_strs(&format!("{:?}", table), "HashMap {\"one\": 1, \"two\": 2}") ||
- check_strs(&format!("{:?}", table), "HashMap {\"two\": 2, \"one\": 1}"));
+ assert!(check_strs(&format!("{:?}", table), "{\"one\": 1, \"two\": 2}") ||
+ check_strs(&format!("{:?}", table), "{\"two\": 2, \"one\": 1}"));
}
--- /dev/null
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+pub mod a {
+ pub struct Foo { a: usize }
+}
+
+pub mod b {
+ use a::Foo;
+ impl Foo {
+ fn bar(&self) { }
+ }
+}
+
+pub fn main() { }
+
+
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-use std::uint;
-
pub fn main() {
// sometimes we have had trouble finding
// the right type for f, as we unified
// bot and u32 here
- let f = match "1234".parse::<uint>().ok() {
+ let f = match "1234".parse::<usize>().ok() {
None => return (),
Some(num) => num as u32
};
pub fn main() {
assert_eq!(transform(Some(10)), Some("11".to_string()));
assert_eq!(transform(None), None);
- assert!((vec!("hi".to_string()))
+ assert_eq!((vec!("hi".to_string()))
.bind(|x| vec!(x.clone(), format!("{}!", x)) )
- .bind(|x| vec!(x.clone(), format!("{}?", x)) ) ==
- vec!("hi".to_string(),
- "hi?".to_string(),
- "hi!".to_string(),
- "hi!?".to_string()));
+ .bind(|x| vec!(x.clone(), format!("{}?", x)) ),
+ ["hi".to_string(),
+ "hi?".to_string(),
+ "hi!".to_string(),
+ "hi!?".to_string()]);
}
// aux-build:sepcomp_lib.rs
// compile-flags: -C lto
// no-prefer-dynamic
+// ignore-android FIXME #18800
extern crate sepcomp_lib;
use sepcomp_lib::a::one;
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::sync;
+
+fn assert_both<T: Sync + Send>() {}
+
+fn main() {
+ assert_both::<sync::StaticMutex>();
+ assert_both::<sync::StaticCondvar>();
+ assert_both::<sync::StaticRwLock>();
+ assert_both::<sync::Mutex<()>>();
+ assert_both::<sync::Condvar>();
+ assert_both::<sync::RwLock<()>>();
+ assert_both::<sync::Semaphore>();
+ assert_both::<sync::Barrier>();
+ assert_both::<sync::Arc<()>>();
+ assert_both::<sync::Weak<()>>();
+ assert_both::<sync::Once>();
+}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(unused_mut)]
+#![feature(collections)]
+
+extern crate collections;
+
+use collections::BinaryHeap;
+use collections::{BitSet, BitVec};
+use collections::{BTreeMap, BTreeSet};
+use collections::EnumSet;
+use collections::LinkedList;
+use collections::Vec;
+use collections::VecDeque;
+use collections::VecMap;
+
+use collections::Bound::Included;
+use collections::enum_set::CLike;
+use std::mem;
+
+fn is_sync<T>(_: T) where T: Sync {}
+fn is_send<T>(_: T) where T: Send {}
+
+macro_rules! all_sync_send {
+ ($ctor:expr, $($iter:ident),+) => ({
+ $(
+ let mut x = $ctor;
+ is_sync(x.$iter());
+ let mut y = $ctor;
+ is_send(y.$iter());
+ )+
+ })
+}
+
+macro_rules! is_sync_send {
+ ($ctor:expr, $iter:ident($($param:expr),+)) => ({
+ let mut x = $ctor;
+ is_sync(x.$iter($( $param ),+));
+ let mut y = $ctor;
+ is_send(y.$iter($( $param ),+));
+ })
+}
+
+fn main() {
+ // The iterator "generator" list should exhaust what corresponding
+ // implementations have where `Sync` and `Send` semantics apply.
+ all_sync_send!(BinaryHeap::<usize>::new(), iter, drain, into_iter);
+
+ all_sync_send!(BitVec::new(), iter);
+
+ all_sync_send!(BitSet::new(), iter);
+ is_sync_send!(BitSet::new(), union(&BitSet::new()));
+ is_sync_send!(BitSet::new(), intersection(&BitSet::new()));
+ is_sync_send!(BitSet::new(), difference(&BitSet::new()));
+ is_sync_send!(BitSet::new(), symmetric_difference(&BitSet::new()));
+
+ all_sync_send!(BTreeMap::<usize, usize>::new(), iter, iter_mut, into_iter, keys, values);
+ is_sync_send!(BTreeMap::<usize, usize>::new(), range(Included(&0), Included(&9)));
+ is_sync_send!(BTreeMap::<usize, usize>::new(), range_mut(Included(&0), Included(&9)));
+
+ all_sync_send!(BTreeSet::<usize>::new(), iter, into_iter);
+ is_sync_send!(BTreeSet::<usize>::new(), range(Included(&0), Included(&9)));
+ is_sync_send!(BTreeSet::<usize>::new(), difference(&BTreeSet::<usize>::new()));
+ is_sync_send!(BTreeSet::<usize>::new(), symmetric_difference(&BTreeSet::<usize>::new()));
+ is_sync_send!(BTreeSet::<usize>::new(), intersection(&BTreeSet::<usize>::new()));
+ is_sync_send!(BTreeSet::<usize>::new(), union(&BTreeSet::<usize>::new()));
+
+ all_sync_send!(LinkedList::<usize>::new(), iter, iter_mut, into_iter);
+
+ #[derive(Copy)]
+ #[repr(usize)]
+ #[allow(dead_code)]
+ enum Foo { A, B, C }
+ impl CLike for Foo {
+ fn to_usize(&self) -> usize {
+ *self as usize
+ }
+
+ fn from_usize(v: usize) -> Foo {
+ unsafe { mem::transmute(v) }
+ }
+ }
+ all_sync_send!(EnumSet::<Foo>::new(), iter);
+
+ all_sync_send!(VecDeque::<usize>::new(), iter, iter_mut, drain, into_iter);
+
+ all_sync_send!(VecMap::<usize>::new(), iter, iter_mut, drain, into_iter, keys, values);
+
+ all_sync_send!(Vec::<usize>::new(), into_iter, drain);
+}
}
pub fn main() {
- assert_eq!(foo(vec!(1)), vec!("hi".to_string()));
- assert_eq!(bar::<int, Vec<int> >(vec!(4, 5)), vec!("4".to_string(), "5".to_string()));
+ assert_eq!(foo(vec!(1)), ["hi".to_string()]);
+ assert_eq!(bar::<int, Vec<int> >(vec!(4, 5)), ["4".to_string(), "5".to_string()]);
assert_eq!(bar::<String, Vec<String> >(vec!("x".to_string(), "y".to_string())),
- vec!("x".to_string(), "y".to_string()));
- assert_eq!(bar::<(), Vec<()>>(vec!(())), vec!("()".to_string()));
+ ["x".to_string(), "y".to_string()]);
+ assert_eq!(bar::<(), Vec<()>>(vec!(())), ["()".to_string()]);
}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+pub mod Foo {
+ pub trait Trait {
+ fn foo(&self);
+ }
+}
+
+mod Bar {
+ impl<'a> ::Foo::Trait+'a {
+ fn bar(&self) { self.foo() }
+ }
+}
+
+fn main() {}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Regression test for issue #22655: This test should not lead to
+// infinite recursion.
+
+unsafe impl<T: Send + ?Sized> Send for Unique<T> { }
+
+pub struct Unique<T:?Sized> {
+ pointer: *const T,
+}
+
+pub struct Node<V> {
+ vals: V,
+ edges: Unique<Node<V>>,
+}
+
+fn is_send<T: Send>() {}
+
+fn main() {
+ is_send::<Node<&'static ()>>();
+}
--- /dev/null
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(macro_rules)]
+
+use std::borrow::{Cow, IntoCow};
+use std::collections::BitVec;
+use std::default::Default;
+use std::iter::FromIterator;
+use std::ops::Add;
+use std::option::IntoIter as OptionIter;
+use std::rand::Rand;
+use std::rand::XorShiftRng as DummyRng;
+// FIXME the glob std::prelude::*; import of Vec is missing non-static inherent methods.
+use std::vec::Vec;
+
+#[derive(PartialEq, Eq)]
+struct Newt<T>(T);
+
+fn id<T>(x: T) -> T { x }
+fn eq<T: Eq>(a: T, b: T) -> bool { a == b }
+fn u8_as_i8(x: u8) -> i8 { x as i8 }
+fn odd(x: usize) -> bool { x % 2 == 1 }
+fn dummy_rng() -> DummyRng { DummyRng::new_unseeded() }
+
+trait Size: Sized {
+ fn size() -> usize { std::mem::size_of::<Self>() }
+}
+impl<T> Size for T {}
+
+macro_rules! tests {
+ ($($expr:expr, $ty:ty, ($($test:expr),*);)+) => (pub fn main() {$({
+ const C: $ty = $expr;
+ static S: $ty = $expr;
+ assert!(eq(C($($test),*), $expr($($test),*)));
+ assert!(eq(S($($test),*), $expr($($test),*)));
+ assert!(eq(C($($test),*), S($($test),*)));
+ })+})
+}
+
+tests! {
+ // Free function.
+ id, fn(i32) -> i32, (5);
+ id::<i32>, fn(i32) -> i32, (5);
+
+ // Enum variant constructor.
+ Some, fn(i32) -> Option<i32>, (5);
+ Some::<i32>, fn(i32) -> Option<i32>, (5);
+
+ // Tuple struct constructor.
+ Newt, fn(i32) -> Newt<i32>, (5);
+ Newt::<i32>, fn(i32) -> Newt<i32>, (5);
+
+ // Inherent static methods.
+ Vec::new, fn() -> Vec<()>, ();
+ Vec::<()>::new, fn() -> Vec<()>, ();
+ <Vec<()>>::new, fn() -> Vec<()>, ();
+ Vec::with_capacity, fn(usize) -> Vec<()>, (5);
+ Vec::<()>::with_capacity, fn(usize) -> Vec<()>, (5);
+ <Vec<()>>::with_capacity, fn(usize) -> Vec<()>, (5);
+ BitVec::from_fn, fn(usize, fn(usize) -> bool) -> BitVec, (5, odd);
+ BitVec::from_fn::<fn(usize) -> bool>, fn(usize, fn(usize) -> bool) -> BitVec, (5, odd);
+
+ // Inherent non-static method.
+ Vec::map_in_place, fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>, (vec![b'f', b'o', b'o'], u8_as_i8);
+ Vec::map_in_place::<i8, fn(u8) -> i8>, fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>,
+ (vec![b'f', b'o', b'o'], u8_as_i8);
+ // FIXME these break with "type parameter might not appear here pointing at `<u8>`.
+ // Vec::<u8>::map_in_place: fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>
+ // , (vec![b'f', b'o', b'o'], u8_as_i8);
+ // Vec::<u8>::map_in_place::<i8, fn(u8) -> i8>: fn(Vec<u8>, fn(u8) -> i8) -> Vec<i8>
+ // , (vec![b'f', b'o', b'o'], u8_as_i8);
+
+ // Trait static methods.
+ bool::size, fn() -> usize, ();
+ <bool>::size, fn() -> usize, ();
+ <bool as Size>::size, fn() -> usize, ();
+
+ Default::default, fn() -> i32, ();
+ i32::default, fn() -> i32, ();
+ <i32>::default, fn() -> i32, ();
+ <i32 as Default>::default, fn() -> i32, ();
+
+ Rand::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ i32::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ <i32>::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ <i32 as Rand>::rand, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ Rand::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ i32::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ <i32>::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+ <i32 as Rand>::rand::<DummyRng>, fn(&mut DummyRng) -> i32, (&mut dummy_rng());
+
+ // Trait non-static methods.
+ Clone::clone, fn(&i32) -> i32, (&5);
+ i32::clone, fn(&i32) -> i32, (&5);
+ <i32>::clone, fn(&i32) -> i32, (&5);
+ <i32 as Clone>::clone, fn(&i32) -> i32, (&5);
+
+ FromIterator::from_iter, fn(OptionIter<i32>) -> Vec<i32>, (Some(5).into_iter());
+ Vec::from_iter, fn(OptionIter<i32>) -> Vec<i32>, (Some(5).into_iter());
+ <Vec<_>>::from_iter, fn(OptionIter<i32>) -> Vec<i32>, (Some(5).into_iter());
+ <Vec<_> as FromIterator<_>>::from_iter, fn(OptionIter<i32>) -> Vec<i32>,
+ (Some(5).into_iter());
+ <Vec<i32> as FromIterator<_>>::from_iter, fn(OptionIter<i32>) -> Vec<i32>,
+ (Some(5).into_iter());
+ FromIterator::from_iter::<OptionIter<i32>>, fn(OptionIter<i32>) -> Vec<i32>,
+ (Some(5).into_iter());
+ <Vec<i32> as FromIterator<_>>::from_iter::<OptionIter<i32>>, fn(OptionIter<i32>) -> Vec<i32>,
+ (Some(5).into_iter());
+
+ Add::add, fn(i32, i32) -> i32, (5, 6);
+ i32::add, fn(i32, i32) -> i32, (5, 6);
+ <i32>::add, fn(i32, i32) -> i32, (5, 6);
+ <i32 as Add<_>>::add, fn(i32, i32) -> i32, (5, 6);
+ <i32 as Add<i32>>::add, fn(i32, i32) -> i32, (5, 6);
+
+ String::into_cow, fn(String) -> Cow<'static, str>,
+ ("foo".to_string());
+ <String>::into_cow, fn(String) -> Cow<'static, str>,
+ ("foo".to_string());
+ <String as IntoCow<_>>::into_cow, fn(String) -> Cow<'static, str>,
+ ("foo".to_string());
+ <String as IntoCow<'static, _>>::into_cow, fn(String) -> Cow<'static, str>,
+ ("foo".to_string());
+}
fn main() {
let mut v: Vec<_> = vec![];
f(|| v.push(0));
- assert_eq!(v, vec![0]);
+ assert_eq!(v, [0]);
}
projects / rust.git / commitdiff