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//! The Rust Abstract Syntax Tree (AST).
//!
//! # Note
//!
//! This API is completely unstable and subject to change.
#![doc(
html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/",
test(attr(deny(warnings)))
)]
#![feature(associated_type_bounds)]
#![feature(box_patterns)]
#![feature(const_trait_impl)]
#![feature(if_let_guard)]
#![feature(let_chains)]
#![feature(min_specialization)]
#![feature(negative_impls)]
#![feature(stmt_expr_attributes)]
#![recursion_limit = "256"]
#![deny(rustc::untranslatable_diagnostic)]
#![deny(rustc::diagnostic_outside_of_impl)]
#[macro_use]
extern crate rustc_macros;
#[macro_use]
extern crate tracing;
pub mod util {
pub mod case;
pub mod classify;
pub mod comments;
pub mod literal;
pub mod parser;
pub mod unicode;
}
pub mod ast;
pub mod ast_traits;
pub mod attr;
pub mod entry;
pub mod expand;
pub mod format;
pub mod mut_visit;
pub mod node_id;
pub mod ptr;
pub mod token;
pub mod tokenstream;
pub mod visit;
pub use self::ast::*;
pub use self::ast_traits::{AstDeref, AstNodeWrapper, HasAttrs, HasNodeId, HasSpan, HasTokens};
pub use self::format::*;
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
/// Requirements for a `StableHashingContext` to be used in this crate.
/// This is a hack to allow using the `HashStable_Generic` derive macro
/// instead of implementing everything in `rustc_middle`.
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)
}
}
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