bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'lib/non-hash/src/lib.rs')
-rw-r--r--lib/non-hash/src/lib.rs104
1 files changed, 0 insertions, 104 deletions
diff --git a/lib/non-hash/src/lib.rs b/lib/non-hash/src/lib.rs
deleted file mode 100644
index af03f3d792..0000000000
--- a/lib/non-hash/src/lib.rs
+++ /dev/null
@@ -1,104 +0,0 @@
-//! A non-hashing [`Hasher`] implementation.
-
-#![deny(clippy::pedantic, missing_debug_implementations, missing_docs, rust_2018_idioms)]
-
-use std::{
- hash::{BuildHasher, Hasher},
- marker::PhantomData,
-};
-
-/// A [`std::collections::HashMap`] with [`NoHashHasherBuilder`].
-pub type NoHashHashMap<K, V> = std::collections::HashMap<K, V, NoHashHasherBuilder<K>>;
-
-/// A [`std::collections::HashSet`] with [`NoHashHasherBuilder`].
-pub type NoHashHashSet<K> = std::collections::HashSet<K, NoHashHasherBuilder<K>>;
-
-/// A hasher builder for [`NoHashHasher`].
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
-pub struct NoHashHasherBuilder<T>(PhantomData<T>);
-
-impl<T> Default for NoHashHasherBuilder<T> {
- fn default() -> Self {
- Self(PhantomData)
- }
-}
-
-/// Types for which an acceptable hash function is to return itself.
-///
-/// This trait is implemented by sufficiently-small integer types. It should only be implemented for
-/// foreign types that are newtypes of these types. If it is implemented on more complex types,
-/// hashing will panic.
-pub trait NoHashHashable {}
-
-impl NoHashHashable for u8 {}
-impl NoHashHashable for u16 {}
-impl NoHashHashable for u32 {}
-impl NoHashHashable for u64 {}
-impl NoHashHashable for usize {}
-
-impl NoHashHashable for i8 {}
-impl NoHashHashable for i16 {}
-impl NoHashHashable for i32 {}
-impl NoHashHashable for i64 {}
-impl NoHashHashable for isize {}
-
-/// A hasher for [`NoHashHashable`] types.
-#[derive(Debug)]
-pub struct NoHashHasher(u64);
-
-impl<T: NoHashHashable> BuildHasher for NoHashHasherBuilder<T> {
- type Hasher = NoHashHasher;
- fn build_hasher(&self) -> Self::Hasher {
- NoHashHasher(0)
- }
-}
-
-impl Hasher for NoHashHasher {
- fn finish(&self) -> u64 {
- self.0
- }
-
- fn write(&mut self, _: &[u8]) {
- unimplemented!("NoHashHasher should only be used for hashing sufficiently-small integer types and their newtypes")
- }
-
- fn write_u8(&mut self, i: u8) {
- self.0 = i as u64;
- }
-
- fn write_u16(&mut self, i: u16) {
- self.0 = i as u64;
- }
-
- fn write_u32(&mut self, i: u32) {
- self.0 = i as u64;
- }
-
- fn write_u64(&mut self, i: u64) {
- self.0 = i;
- }
-
- fn write_usize(&mut self, i: usize) {
- self.0 = i as u64;
- }
-
- fn write_i8(&mut self, i: i8) {
- self.0 = i as u64;
- }
-
- fn write_i16(&mut self, i: i16) {
- self.0 = i as u64;
- }
-
- fn write_i32(&mut self, i: i32) {
- self.0 = i as u64;
- }
-
- fn write_i64(&mut self, i: i64) {
- self.0 = i as u64;
- }
-
- fn write_isize(&mut self, i: isize) {
- self.0 = i as u64;
- }
-}