1 // Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! The Rust parser and macro expander.
15 //! This API is completely unstable and subject to change.
17 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
18 html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
19 html_root_url = "https://doc.rust-lang.org/nightly/",
20 test(attr(deny(warnings))))]
22 #![feature(unicode_internals)]
23 #![feature(rustc_diagnostic_macros)]
24 #![feature(slice_sort_by_cached_key)]
25 #![feature(non_exhaustive)]
26 #![feature(const_atomic_usize_new)]
27 #![feature(rustc_attrs)]
29 #![recursion_limit="256"]
31 #[macro_use] extern crate bitflags;
33 extern crate serialize;
34 #[macro_use] extern crate log;
35 pub extern crate rustc_errors as errors;
36 extern crate syntax_pos;
37 extern crate rustc_data_structures;
38 extern crate rustc_target;
39 #[macro_use] extern crate scoped_tls;
41 extern crate serialize as rustc_serialize; // used by deriving
43 use rustc_data_structures::sync::Lock;
45 // A variant of 'try!' that panics on an Err. This is used as a crutch on the
46 // way towards a non-panic!-prone parser. It should be used for fatal parsing
47 // errors; eventually we plan to convert all code using panictry to just use
49 // Exported for syntax_ext, not meant for general use.
51 macro_rules! panictry {
53 use std::result::Result::{Ok, Err};
54 use errors::FatalError;
66 macro_rules! unwrap_or {
67 ($opt:expr, $default:expr) => {
76 used_attrs: Lock<Vec<u64>>,
77 known_attrs: Lock<Vec<u64>>,
78 syntax_pos_globals: syntax_pos::Globals,
84 used_attrs: Lock::new(Vec::new()),
85 known_attrs: Lock::new(Vec::new()),
86 syntax_pos_globals: syntax_pos::Globals::new(),
91 pub fn with_globals<F, R>(f: F) -> R
92 where F: FnOnce() -> R
94 let globals = Globals::new();
95 GLOBALS.set(&globals, || {
96 syntax_pos::GLOBALS.set(&globals.syntax_pos_globals, f)
100 scoped_thread_local!(static GLOBALS: Globals);
103 pub mod diagnostics {
110 // NB: This module needs to be declared first so diagnostics are
111 // registered before they are used.
112 pub mod diagnostic_list;
115 pub mod lev_distance;
119 pub mod parser_testing;
120 pub mod small_vector;
124 pub use self::thin_vec::ThinVec;
127 pub use self::rc_slice::RcSlice;
145 pub mod feature_gate;
152 pub use syntax_pos::symbol;
163 pub use syntax_pos::hygiene;
168 pub mod placeholders;
174 pub mod macro_parser;
183 __build_diagnostic_array! { libsyntax, DIAGNOSTICS }