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//! The Rust parser and macro expander.
//!
//! # Note
//!
//! This API is completely unstable and subject to change.
#![doc(html_root_url = "https://doc.rust-lang.org/nightly/",
test(attr(deny(warnings))))]
#![feature(box_syntax)]
#![feature(const_fn)]
#![feature(const_transmute)]
#![feature(crate_visibility_modifier)]
#![feature(label_break_value)]
#![feature(nll)]
#![feature(try_trait)]
#![feature(slice_patterns)]
#![feature(unicode_internals)]
#![recursion_limit="256"]
pub use errors;
use rustc_data_structures::sync::Lock;
use rustc_index::bit_set::GrowableBitSet;
pub use rustc_data_structures::thin_vec::ThinVec;
use ast::AttrId;
use syntax_pos::edition::Edition;
#[macro_export]
macro_rules! unwrap_or {
($opt:expr, $default:expr) => {
match $opt {
Some(x) => x,
None => $default,
}
}
}
pub struct Globals {
used_attrs: Lock<GrowableBitSet<AttrId>>,
known_attrs: Lock<GrowableBitSet<AttrId>>,
syntax_pos_globals: syntax_pos::Globals,
}
impl Globals {
fn new(edition: Edition) -> Globals {
Globals {
// We have no idea how many attributes there will be, so just
// initiate the vectors with 0 bits. We'll grow them as necessary.
used_attrs: Lock::new(GrowableBitSet::new_empty()),
known_attrs: Lock::new(GrowableBitSet::new_empty()),
syntax_pos_globals: syntax_pos::Globals::new(edition),
}
}
}
pub fn with_globals<F, R>(edition: Edition, f: F) -> R
where F: FnOnce() -> R
{
let globals = Globals::new(edition);
GLOBALS.set(&globals, || {
syntax_pos::GLOBALS.set(&globals.syntax_pos_globals, f)
})
}
pub fn with_default_globals<F, R>(f: F) -> R
where F: FnOnce() -> R
{
with_globals(edition::DEFAULT_EDITION, f)
}
scoped_tls::scoped_thread_local!(pub static GLOBALS: Globals);
#[macro_use]
pub mod diagnostics {
#[macro_use]
pub mod macros;
}
pub mod util {
pub mod classify;
pub mod comments;
pub mod lev_distance;
pub mod literal;
pub mod node_count;
pub mod parser;
pub mod map_in_place;
}
pub mod ast;
pub mod attr;
pub mod expand;
pub use syntax_pos::source_map;
pub mod entry;
pub mod feature_gate;
pub mod mut_visit;
pub mod ptr;
pub mod show_span;
pub use syntax_pos::edition;
pub use syntax_pos::symbol;
pub mod sess;
pub mod token;
pub mod tokenstream;
pub mod visit;
pub mod print {
pub mod pp;
pub mod pprust;
mod helpers;
}
pub mod early_buffered_lints;
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