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#![doc(html_root_url = "https://doc.rust-lang.org/nightly/", test(attr(deny(warnings))))]
#![feature(rustc_private, bool_to_option)]
#![feature(box_syntax)]
#![feature(const_fn)]
#![feature(const_transmute)]
#![feature(crate_visibility_modifier)]
#![feature(label_break_value)]
#![feature(nll)]
#![feature(try_trait)]
#![cfg_attr(bootstrap, feature(slice_patterns))]
#![feature(unicode_internals)]
#![recursion_limit = "256"]
use ast::AttrId;
use rustc_data_structures::sync::Lock;
use rustc_index::bit_set::GrowableBitSet;
use rustc_span::edition::{Edition, DEFAULT_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>>,
rustc_span_globals: rustc_span::Globals,
}
impl Globals {
fn new(edition: Edition) -> Globals {
Globals {
used_attrs: Lock::new(GrowableBitSet::new_empty()),
known_attrs: Lock::new(GrowableBitSet::new_empty()),
rustc_span_globals: rustc_span::Globals::new(edition),
}
}
}
pub fn with_globals<R>(edition: Edition, f: impl FnOnce() -> R) -> R {
let globals = Globals::new(edition);
GLOBALS.set(&globals, || rustc_span::GLOBALS.set(&globals.rustc_span_globals, f))
}
pub fn with_default_globals<R>(f: impl FnOnce() -> R) -> R {
with_globals(DEFAULT_EDITION, f)
}
scoped_tls::scoped_thread_local!(pub static GLOBALS: Globals);
pub mod util {
pub mod classify;
pub mod comments;
pub mod lev_distance;
pub mod literal;
pub mod map_in_place;
pub mod node_count;
pub mod parser;
}
pub mod ast;
pub mod attr;
pub mod entry;
pub mod expand;
pub mod mut_visit;
pub mod ptr;
pub use rustc_session::parse as sess;
pub mod token;
pub mod tokenstream;
pub mod visit;
pub mod print {
mod helpers;
pub mod pp;
pub mod pprust;
}
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
pub trait HashStableContext: rustc_span::HashStableContext {
fn hash_attr(&mut self, _: &ast::Attribute, hasher: &mut StableHasher);
}
impl<AstCtx: crate::HashStableContext> HashStable<AstCtx> for ast::Attribute {
fn hash_stable(&self, hcx: &mut AstCtx, hasher: &mut StableHasher) {
hcx.hash_attr(self, hasher)
}
}