bors [Wed, 6 Feb 2019 06:01:37 +0000 (06:01 +0000)]
Auto merge of #58061 - nnethercote:overhaul-syntax-Folder, r=petrochenkov
Overhaul `syntax::fold::Folder`.
This PR changes `syntax::fold::Folder` from a functional style
(where most methods take a `T` and produce a new `T`) to a more
imperative style (where most methods take and modify a `&mut T`), and
renames it `syntax::mut_visit::MutVisitor`.
The compiler allows you to write a `use` statement for a built-in non-macro attribute, since `use proc_macro` can apply to both the `proc_macro` crate and the `#[proc_macro]` attribute. However, if you write a use statement for something that *doesn't* have this crossover, rustdoc will try to use it the same way as anything else... which resulted in an ICE because it tried to pull a DefId for something that didn't have one. This PR makes rustdoc skip those lookups when it encounters them, allowing it to properly process and render these imports.
bors [Tue, 5 Feb 2019 22:08:47 +0000 (22:08 +0000)]
Auto merge of #58131 - ehuss:update-cargo, r=alexcrichton
Update cargo
7 commits in 245818076052dd7178f5bb7585f5aec5b6c1e03e..4e74e2fc0908524d17735c768067117d3e84ee9c
2019-01-27 15:17:26 +0000 to 2019-02-02 17:48:44 +0000
- Fix overlapping progress with stdout. (rust-lang/cargo#6618)
- Improve progress bar flickering. (rust-lang/cargo#6615)
- Add detail to multiple rename deps (rust-lang/cargo#6603)
- Fix race condition in local registry crate unpacking (rust-lang/cargo#6591)
- Revert "Make incremental compilation the default for all profiles." (rust-lang/cargo#6610)
- Fixup the docs on crate-type (rust-lang/cargo#6606)
- Document that owner --add now just invites (rust-lang/cargo#6604)
This commit changes `syntax::fold::Folder` from a functional style
(where most methods take a `T` and produce a new `T`) to a more
imperative style (where most methods take and modify a `&mut T`), and
renames it `syntax::mut_visit::MutVisitor`.
The first benefit is speed. The functional style does not require any
reallocations, due to the use of `P::map` and
`MoveMap::move_{,flat_}map`. However, every field in the AST must be
overwritten; even those fields that are unchanged are overwritten with
the same value. This causes a lot of unnecessary memory writes. The
imperative style reduces instruction counts by 1--3% across a wide range
of workloads, particularly incremental workloads.
The second benefit is conciseness; the imperative style is usually more
concise. E.g. compare the old functional style:
```
fn fold_abc(&mut self, abc: ABC) {
ABC {
a: fold_a(abc.a),
b: fold_b(abc.b),
c: abc.c,
}
}
```
with the imperative style:
```
fn visit_abc(&mut self, ABC { a, b, c: _ }: &mut ABC) {
visit_a(a);
visit_b(b);
}
```
(The reductions get larger in more complex examples.)
Overall, the patch removes over 200 lines of code -- even though the new
code has more comments -- and a lot of the remaining lines have fewer
characters.
Some notes:
- The old style used methods called `fold_*`. The new style mostly uses
methods called `visit_*`, but there are a few methods that map a `T`
to something other than a `T`, which are called `flat_map_*` (`T` maps
to multiple `T`s) or `filter_map_*` (`T` maps to 0 or 1 `T`s).
- `move_map.rs`/`MoveMap`/`move_map`/`move_flat_map` are renamed
`map_in_place.rs`/`MapInPlace`/`map_in_place`/`flat_map_in_place` to
reflect their slightly changed signatures.
- Although this commit renames the `fold` module as `mut_visit`, it
keeps it in the `fold.rs` file, so as not to confuse git. The next
commit will rename the file.
bors [Tue, 5 Feb 2019 19:12:11 +0000 (19:12 +0000)]
Auto merge of #57851 - Aaron1011:fix/clean-lifetime, r=GuillaumeGomez
Don't try to clean predicates involving ReErased
There's nothing to render when we have a bound involving ReErased (either
a type or region outliving it), so we don't attempt to generate a clean
WherePredicate
Fixes #57806
I haven't been able to come up with a minimized reproduction for the issue, but I've confirmed that this allows the docs to build for `parqet-rs`
kennytm [Tue, 5 Feb 2019 15:29:19 +0000 (00:29 +0900)]
Rollup merge of #58172 - garyemerson:patch-1, r=steveklabnik
update split docs
Some confusion about split popped up at https://news.ycombinator.com/item?id=19080931 since the docs sorta sound like `&str`, `char` and closures are the only types that can be patterns.
kennytm [Tue, 5 Feb 2019 15:29:13 +0000 (00:29 +0900)]
Rollup merge of #58142 - jethrogb:jb/sgx-rwlock, r=joshtriplett
Remove stray FIXME
These were copied from the WebAssembly implementation, and later commented. There is nothing to be fixed, RWLock is Send/Sync because all member fields are Send/Sync.
kennytm [Tue, 5 Feb 2019 15:29:02 +0000 (00:29 +0900)]
Rollup merge of #58116 - topecongiro:wrong-span-assignment, r=petrochenkov
Include the span of attributes of the lhs to the span of the assignment expression
This PR adds the span of attributes of the lhs to the span of the assignment expression. Currently with the following code, `#[attr]` is not included to the span of the assignment (`foo = true`).
```rust
#[attr]
foo = true;
```
The rational behind this change is that as libsyntax user I expect the span of the parent node includes every span of child nodes.
cc https://github.com/rust-lang/rustfmt/issues/3313, https://github.com/rust-lang/rust/issues/15701.
kennytm [Tue, 5 Feb 2019 15:28:46 +0000 (00:28 +0900)]
Rollup merge of #58001 - pnkfelix:issue-57735-proc-macro-with-large-tokenstream-slow, r=eddyb
proc_macro: make `TokenStream::from_streams` pre-allocate its vector.
This requires a pre-pass over the input streams. But that is cheap compared to the quadratic blowup associated with reallocating the accumulating vector on-the-fly.
bors [Tue, 5 Feb 2019 01:40:13 +0000 (01:40 +0000)]
Auto merge of #56291 - jamesmunns:upstream-embedded-book, r=steveklabnik
Initial addition of the Embedded Rust Book
This PR adds the Embedded Rust Book to the bookshelf as a submodule, and adds text for the bookshelf page. I have added a new section after "Master Rust" called "Specialize Rust", with the plan that future domain WG books can also reside here. This now extends the titles down to H3, where formerly only H1 and H2 were used.
The added submodule tracks the master branch of the Embedded WG repo.
If there are additional steps necessary to make this work in CI (perhaps adding this to `src/ci/docker/x86_64-gnu-tools/checktools.sh:32` or so?), please let me know.
CC @steveklabnik @japaric
Also CC issue https://github.com/rust-embedded/wg/issues/257
garyemerson [Mon, 4 Feb 2019 23:26:33 +0000 (15:26 -0800)]
update split docs
Some confusion about split popped up at https://news.ycombinator.com/item?id=19080931 since the docs sorta sound like `&str`, `char` and closures are the only types that can be patterns.
bors [Mon, 4 Feb 2019 01:06:25 +0000 (01:06 +0000)]
Auto merge of #58090 - ljedrz:HirIdification_phase_2, r=Zoxc
HirIdification: add key HirId methods
This is another PR in a series dedicated to `HirId`-ification, i.e. deprecating `ast::NodeId`s after the AST > HIR lowering process. The bigger proof of concept can be seen in #57578.
**Phase 2**: add key `HirId` methods mirroring the `NodeId` ones.
These should be counterparts of the most widely used `Hir` methods using `NodeId`s. Note that this expands `hir::map::Definitions` with an additional `hir_to_def_index` map (with the intention of later removing `node_to_def_index`).
As a bonus there is also a small cleanup commit removing unnecessary calls to `node_to_hir_id` where `HirId` is already available.
bors [Sun, 3 Feb 2019 18:40:23 +0000 (18:40 +0000)]
Auto merge of #58081 - Centril:liballoc-2018, r=oli-obk
Transition liballoc to Rust 2018
This transitions liballoc to Rust 2018 edition and applies relevant idiom lints.
I also did a small bit of drive-by cleanup along the way.
r? @oli-obk
I started with liballoc since it seemed easiest. In particular, adding `edition = "2018"` to libcore gave me way too many errors due to stdsimd. Ideally we should be able to continue this crate-by-crate until all crates use 2018.
Rustup: unused trim result
Auto merge of #3727 - phansch:rustup_unused_trim, r=matthiaskrgr …
Travis: Don't run integration tests on every PR commit …
Auto merge of #3726 - phansch:some_renaming, r=oli-obk …
Fix ICE in vec_box lint and add run-rustfix …
Make vec_box MachineApplicable
Remove conditionals from base builds …
Adding lint for too many lines.
Updating number of lines for the failing test to be > 100. …
Running util/dev to update README/CHANGELOG
Reworking function logic, and adding doc example. …
Moving tests to ui-toml to make use of clippy.toml
rustfmt
Adding back tests, but also reducing threshold by 1
Updating to just warn for one test.
Fix test broken by removing comment.
Skipping check if in external macro.
Adding lint for too many lines.
Updating number of lines for the failing test to be > 100. …
Moving tests to ui-toml to make use of clippy.toml
rustfmt
Adding back tests, but also reducing threshold by 1
Updating to just warn for one test.
Fix test broken by removing comment.
Changing single character string to a character match.
Updated readme.
Updating code to ignore rustfmt issue.
phansch and avborhanian
Update clippy_lints/src/types.rs …
Update clippy_lints/src/types.rs …
Auto merge of #3732 - phansch:fix_ice_3720, r=oli-obk …
Auto merge of #3731 - phansch:travis, r=phansch …
Auto merge of #2857 - avborhanian:master, r=phansch …
Fix breakage due to rust-lang/rust#58079 …
Auto merge of #3736 - mikerite:fix-build-20190203, r=phansch …
bors [Sun, 3 Feb 2019 13:35:15 +0000 (13:35 +0000)]
Auto merge of #57922 - davidtwco:issue-57410, r=petrochenkov
Update visibility of intermediate use items.
Fixes #57410 and fixes #53925 and fixes #47816.
Currently, the target of a use statement will be updated with
the visibility of the use statement itself (if the use statement was
visible).
This PR ensures that if the path to the target item is via another
use statement then that intermediate use statement will also have the
visibility updated like the target. This silences incorrect
`unreachable_pub` lints with inactionable suggestions.
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