1 //! Various data structures used by the Rust compiler. The intention
2 //! is that code in here should be not be *specific* to rustc, so that
3 //! it can be easily unit tested and so forth.
7 //! This API is completely unstable and subject to change.
9 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
10 #![feature(array_windows)]
11 #![feature(associated_type_bounds)]
12 #![feature(auto_traits)]
13 #![feature(control_flow_enum)]
14 #![feature(core_intrinsics)]
15 #![feature(extend_one)]
17 #![feature(hash_raw_entry)]
18 #![feature(hasher_prefixfree_extras)]
19 #![feature(maybe_uninit_uninit_array)]
20 #![feature(min_specialization)]
21 #![feature(never_type)]
22 #![feature(type_alias_impl_trait)]
23 #![feature(new_uninit)]
24 #![feature(once_cell)]
25 #![feature(rustc_attrs)]
27 #![feature(thread_id_value)]
28 #![feature(vec_into_raw_parts)]
29 #![allow(rustc::default_hash_types)]
30 #![allow(rustc::potential_query_instability)]
37 extern crate rustc_macros;
39 pub use rustc_index::static_assert_size;
43 pub fn cold_path<F: FnOnce() -> R, R>(f: F) -> R {
51 #[allow(unused_unsafe)]
52 e => unsafe { std::intrinsics::likely(e) },
58 macro_rules! unlikely {
61 #[allow(unused_unsafe)]
62 e => unsafe { std::intrinsics::unlikely(e) },
68 pub mod binary_search_util;
78 pub mod obligation_forest;
86 pub use ena::snapshot_vec;
91 pub mod stable_hasher;
100 pub mod transitive_relation;
101 pub mod vec_linked_list;
104 pub use atomic_ref::AtomicRef;
112 pub use ena::undo_log;
115 pub struct OnDrop<F: Fn()>(pub F);
117 impl<F: Fn()> OnDrop<F> {
118 /// Forgets the function which prevents it from running.
119 /// Ensure that the function owns no memory, otherwise it will be leaked.
121 pub fn disable(self) {
122 std::mem::forget(self);
126 impl<F: Fn()> Drop for OnDrop<F> {
133 // See comments in src/librustc_middle/lib.rs
135 pub fn __noop_fix_for_27438() {}