compiler/rustc_data_structures/src/fx.rs

   1 use std::hash::BuildHasherDefault;
   2
   3 pub use rustc_hash::{FxHashMap, FxHashSet, FxHasher};
   4
   5 pub type StdEntry<'a, K, V> = std::collections::hash_map::Entry<'a, K, V>;
   6
   7 pub type FxIndexMap<K, V> = indexmap::IndexMap<K, V, BuildHasherDefault<FxHasher>>;
   8 pub type FxIndexSet<V> = indexmap::IndexSet<V, BuildHasherDefault<FxHasher>>;
   9 pub type IndexEntry<'a, K, V> = indexmap::map::Entry<'a, K, V>;
  10
  11 #[macro_export]
  12 macro_rules! define_id_collections {
  13     ($map_name:ident, $set_name:ident, $entry_name:ident, $key:ty) => {
  14         pub type $map_name<T> = $crate::fx::FxHashMap<$key, T>;
  15         pub type $set_name = $crate::fx::FxHashSet<$key>;
  16         pub type $entry_name<'a, T> = $crate::fx::StdEntry<'a, $key, T>;
  17     };
  18 }
  19
  20 #[macro_export]
  21 macro_rules! define_stable_id_collections {
  22     ($map_name:ident, $set_name:ident, $entry_name:ident, $key:ty) => {
  23         pub type $map_name<T> = $crate::fx::FxIndexMap<$key, T>;
  24         pub type $set_name = $crate::fx::FxIndexSet<$key>;
  25         pub type $entry_name<'a, T> = $crate::fx::IndexEntry<'a, $key, T>;
  26     };
  27 }