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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `C:\Users\zenn\.cargo\registry\src\index.crates.io-6f17d22bba15001f\hash32-0.2.1\src\lib.rs`."><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-cb6f1f67f1bcd037.css" id="mainThemeStyle"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="hash32" data-themes="" data-resource-suffix="" data-rustdoc-version="1.73.0-nightly (8131b9774 2023-08-02)" data-channel="nightly" data-search-js="search-6dfdfced5eff6596.js" data-settings-js="settings-de11bff964e9d4e5.js" data-settings-css="settings-8c76f75bfb6bd192.css" data-theme-light-css="light-6d2c9675f3d09c26.css" data-theme-dark-css="dark-45ceb8f2e522f4d1.css" data-theme-ayu-css="ayu-fd19013d6ce078bf.css" ><script src="../../static.files/storage-db41da1a38ea3cb8.js"></script><script defer src="../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-0795b7d26be81095.js"></script><noscript><link rel="stylesheet" media="(prefers-color-scheme:light)" href="../../static.files/light-6d2c9675f3d09c26.css"><link rel="stylesheet" media="(prefers-color-scheme:dark)" href="../../static.files/dark-45ceb8f2e522f4d1.css"><link rel="stylesheet" href="../../static.files/noscript-cffde32267a19fd6.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../hash32/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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||
<a href="#312" id="312">312</a>
|
||
<a href="#313" id="313">313</a>
|
||
<a href="#314" id="314">314</a>
|
||
<a href="#315" id="315">315</a>
|
||
<a href="#316" id="316">316</a>
|
||
<a href="#317" id="317">317</a>
|
||
<a href="#318" id="318">318</a>
|
||
<a href="#319" id="319">319</a>
|
||
<a href="#320" id="320">320</a>
|
||
<a href="#321" id="321">321</a>
|
||
<a href="#322" id="322">322</a>
|
||
<a href="#323" id="323">323</a>
|
||
<a href="#324" id="324">324</a>
|
||
<a href="#325" id="325">325</a>
|
||
<a href="#326" id="326">326</a>
|
||
<a href="#327" id="327">327</a>
|
||
<a href="#328" id="328">328</a>
|
||
<a href="#329" id="329">329</a>
|
||
<a href="#330" id="330">330</a>
|
||
<a href="#331" id="331">331</a>
|
||
<a href="#332" id="332">332</a>
|
||
<a href="#333" id="333">333</a>
|
||
<a href="#334" id="334">334</a>
|
||
<a href="#335" id="335">335</a>
|
||
<a href="#336" id="336">336</a>
|
||
<a href="#337" id="337">337</a>
|
||
<a href="#338" id="338">338</a>
|
||
<a href="#339" id="339">339</a>
|
||
<a href="#340" id="340">340</a>
|
||
<a href="#341" id="341">341</a>
|
||
<a href="#342" id="342">342</a>
|
||
<a href="#343" id="343">343</a>
|
||
<a href="#344" id="344">344</a>
|
||
<a href="#345" id="345">345</a>
|
||
<a href="#346" id="346">346</a>
|
||
<a href="#347" id="347">347</a>
|
||
<a href="#348" id="348">348</a>
|
||
<a href="#349" id="349">349</a>
|
||
<a href="#350" id="350">350</a>
|
||
<a href="#351" id="351">351</a>
|
||
<a href="#352" id="352">352</a>
|
||
<a href="#353" id="353">353</a>
|
||
<a href="#354" id="354">354</a>
|
||
<a href="#355" id="355">355</a>
|
||
<a href="#356" id="356">356</a>
|
||
<a href="#357" id="357">357</a>
|
||
<a href="#358" id="358">358</a>
|
||
<a href="#359" id="359">359</a>
|
||
<a href="#360" id="360">360</a>
|
||
<a href="#361" id="361">361</a>
|
||
<a href="#362" id="362">362</a>
|
||
<a href="#363" id="363">363</a>
|
||
</pre></div><pre class="rust"><code><span class="doccomment">//! 32-bit hashing machinery
|
||
//!
|
||
//! # Why?
|
||
//!
|
||
//! Because 32-bit architectures are a thing (e.g. ARM Cortex-M) and you don't want your hashing
|
||
//! function to pull in a bunch of slow 64-bit compiler intrinsics (software implementations of
|
||
//! 64-bit operations).
|
||
//!
|
||
//! # Relationship to `core::hash`
|
||
//!
|
||
//! This crate exposes the same interfaces you'll find in [`core::hash`]: `Hash`, `Hasher`,
|
||
//! `BuildHasher` and `BuildHasherDefault`. The main difference is that `hash32::Hasher::finish`
|
||
//! returns a `u32` instead of `u64`, and the contract of `hash32::Hasher` forbids the implementer
|
||
//! from performing 64-bit (or 128-bit) operations while computing the hash.
|
||
//!
|
||
//! [`core::hash`]: https://doc.rust-lang.org/std/hash/index.html
|
||
//!
|
||
//! # `#[derive(Hash32)]`
|
||
//!
|
||
//! The easiest way to implement `hash32::Hash` for a `struct` is to use the `#[derive(Hash32)]`.
|
||
//!
|
||
//! Note that you need to *explicitly* depend on both `hash32` *and* `hash32_derive`; both crates
|
||
//! must appear in your `Cargo.toml`.
|
||
//!
|
||
//! ``` ignore
|
||
//! use hash32_derive::Hash32;
|
||
//!
|
||
//! #[derive(Hash32)]
|
||
//! struct Ipv4Addr([u8; 4]);
|
||
//!
|
||
//! # fn main() {}
|
||
//!
|
||
//! ```
|
||
//! # Hashers
|
||
//!
|
||
//! This crate provides implementations of the following 32-bit hashing algorithms:
|
||
//!
|
||
//! - [Fowler-Noll-Vo](struct.FnvHasher.html)
|
||
//! - [MurmurHash3](struct.Murmur3Hasher.html)
|
||
//!
|
||
//! # MSRV
|
||
//!
|
||
//! This crate is guaranteed to compile on latest stable Rust. It *might* compile on older
|
||
//! versions but that may change in any new patch release.
|
||
//!
|
||
//! # Future
|
||
//!
|
||
//! In the future we'd like to deprecate this crate in favor of making `core::hash::Hasher` generic
|
||
//! over the size of the computed hash. Below is shown the planned change (but it doesn't work due
|
||
//! to limitations in the `associated_type_defaults` feature):
|
||
//!
|
||
//! ``` ignore
|
||
//! #![feature(associated_type_defaults)]
|
||
//!
|
||
//! trait Hasher {
|
||
//! type Hash = u64; // default type for backwards compatibility
|
||
//!
|
||
//! fn finish(&self) -> Self::Hash; // changed
|
||
//! fn write(&mut self, bytes: &[u8]);
|
||
//! }
|
||
//! ```
|
||
//!
|
||
//! With this change a single `#[derive(Hash)]` would enough to make a type hashable with 32-bit and
|
||
//! 64-bit hashers.
|
||
|
||
</span><span class="attr">#![deny(missing_docs)]
|
||
#![deny(warnings)]
|
||
#![no_std]
|
||
|
||
</span><span class="kw">extern crate </span>byteorder;
|
||
|
||
<span class="kw">use </span>core::marker::PhantomData;
|
||
<span class="kw">use </span>core::{mem, slice, fmt};
|
||
|
||
<span class="kw">pub use </span>fnv::Hasher <span class="kw">as </span>FnvHasher;
|
||
<span class="kw">pub use </span>murmur3::Hasher <span class="kw">as </span>Murmur3Hasher;
|
||
|
||
<span class="kw">mod </span>fnv;
|
||
<span class="kw">mod </span>murmur3;
|
||
|
||
<span class="doccomment">/// See [`core::hash::BuildHasherDefault`][0] for details
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/core/hash/struct.BuildHasherDefault.html
|
||
</span><span class="kw">pub struct </span>BuildHasherDefault<H>
|
||
{
|
||
_marker: PhantomData<H>,
|
||
}
|
||
|
||
<span class="kw">impl</span><H> Default <span class="kw">for </span>BuildHasherDefault<H>
|
||
<span class="kw">where
|
||
</span>H: Default + Hasher,
|
||
{
|
||
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
|
||
BuildHasherDefault {
|
||
_marker: PhantomData,
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><H> Clone <span class="kw">for </span>BuildHasherDefault<H>
|
||
<span class="kw">where
|
||
</span>H: Default + Hasher,
|
||
{
|
||
<span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self </span>{
|
||
BuildHasherDefault::default()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><H> PartialEq <span class="kw">for </span>BuildHasherDefault<H>
|
||
<span class="kw">where
|
||
</span>H: Default + Hasher,
|
||
{
|
||
<span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, _other: <span class="kw-2">&</span>BuildHasherDefault<H>) -> bool {
|
||
<span class="bool-val">true
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">impl</span><H: Default + Hasher> Eq <span class="kw">for </span>BuildHasherDefault<H> {}
|
||
|
||
<span class="kw">impl</span><H: Default + Hasher> fmt::Debug <span class="kw">for </span>BuildHasherDefault<H> {
|
||
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result {
|
||
f.pad(<span class="string">"BuildHasherDefault"</span>)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><H> BuildHasherDefault<H>
|
||
{
|
||
<span class="doccomment">/// `const` constructor
|
||
</span><span class="kw">pub const fn </span>new() -> <span class="self">Self </span>{
|
||
BuildHasherDefault {
|
||
_marker: PhantomData,
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><H> BuildHasher <span class="kw">for </span>BuildHasherDefault<H>
|
||
<span class="kw">where
|
||
</span>H: Default + Hasher,
|
||
{
|
||
<span class="kw">type </span>Hasher = H;
|
||
|
||
<span class="kw">fn </span>build_hasher(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Hasher {
|
||
H::default()
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// See [`core::hash::BuildHasher`][0] for details
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/core/hash/trait.BuildHasher.html
|
||
</span><span class="kw">pub trait </span>BuildHasher {
|
||
<span class="doccomment">/// See [`core::hash::BuildHasher::Hasher`][0]
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/std/hash/trait.BuildHasher.html#associatedtype.Hasher
|
||
</span><span class="kw">type </span>Hasher: Hasher;
|
||
|
||
<span class="doccomment">/// See [`core::hash::BuildHasher.build_hasher`][0]
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/std/hash/trait.BuildHasher.html#tymethod.build_hasher
|
||
</span><span class="kw">fn </span>build_hasher(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Hasher;
|
||
}
|
||
|
||
<span class="doccomment">/// See [`core::hash::Hasher`][0] for details
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/core/hash/trait.Hasher.html
|
||
///
|
||
/// # Contract
|
||
///
|
||
/// Implementers of this trait must *not* perform any 64-bit (or 128-bit) operation while computing
|
||
/// the hash.
|
||
</span><span class="kw">pub trait </span>Hasher {
|
||
<span class="doccomment">/// See [`core::hash::Hasher.finish`][0]
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/std/hash/trait.Hasher.html#tymethod.finish
|
||
</span><span class="kw">fn </span>finish(<span class="kw-2">&</span><span class="self">self</span>) -> u32;
|
||
|
||
<span class="doccomment">/// See [`core::hash::Hasher.write`][0]
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/std/hash/trait.Hasher.html#tymethod.write
|
||
</span><span class="kw">fn </span>write(<span class="kw-2">&mut </span><span class="self">self</span>, bytes: <span class="kw-2">&</span>[u8]);
|
||
}
|
||
|
||
<span class="doccomment">/// See [`core::hash::Hash`][0] for details
|
||
///
|
||
/// [0]: https://doc.rust-lang.org/core/hash/trait.Hash.html
|
||
</span><span class="kw">pub trait </span>Hash {
|
||
<span class="doccomment">/// Feeds this value into the given `Hasher`.
|
||
</span><span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher;
|
||
|
||
<span class="doccomment">/// Feeds a slice of this type into the given `Hasher`.
|
||
</span><span class="kw">fn </span>hash_slice<H>(data: <span class="kw-2">&</span>[<span class="self">Self</span>], state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
<span class="self">Self</span>: Sized,
|
||
{
|
||
<span class="kw">for </span>piece <span class="kw">in </span>data {
|
||
piece.hash(state);
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="macro">macro_rules! </span>int {
|
||
(<span class="macro-nonterminal">$ty</span>:ident) => {
|
||
<span class="kw">impl </span>Hash <span class="kw">for </span><span class="macro-nonterminal">$ty </span>{
|
||
<span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
<span class="kw">unsafe </span>{ state.write(<span class="kw-2">&</span>mem::transmute::<<span class="macro-nonterminal">$ty</span>, [u8; mem::size_of::<<span class="macro-nonterminal">$ty</span>>()]>(<span class="kw-2">*</span><span class="self">self</span>)) }
|
||
}
|
||
|
||
<span class="kw">fn </span>hash_slice<H>(data: <span class="kw-2">&</span>[<span class="self">Self</span>], state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
<span class="kw">let </span>newlen = data.len() * mem::size_of::<<span class="macro-nonterminal">$ty</span>>();
|
||
<span class="kw">let </span>ptr = data.as_ptr() <span class="kw">as </span><span class="kw-2">*const </span>u8;
|
||
<span class="kw">unsafe </span>{ state.write(slice::from_raw_parts(ptr, newlen)) }
|
||
}
|
||
}
|
||
};
|
||
}
|
||
|
||
<span class="macro">int!</span>(i16);
|
||
<span class="macro">int!</span>(i32);
|
||
<span class="macro">int!</span>(i64);
|
||
<span class="macro">int!</span>(i8);
|
||
<span class="macro">int!</span>(isize);
|
||
<span class="macro">int!</span>(u16);
|
||
<span class="macro">int!</span>(u32);
|
||
<span class="macro">int!</span>(u64);
|
||
<span class="macro">int!</span>(u8);
|
||
<span class="macro">int!</span>(usize);
|
||
|
||
<span class="kw">impl </span>Hash <span class="kw">for </span>bool {
|
||
<span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
(<span class="kw-2">*</span><span class="self">self </span><span class="kw">as </span>u8).hash(state)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl </span>Hash <span class="kw">for </span>char {
|
||
<span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
(<span class="kw-2">*</span><span class="self">self </span><span class="kw">as </span>u32).hash(state)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl </span>Hash <span class="kw">for </span>str {
|
||
<span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
state.write(<span class="self">self</span>.as_bytes());
|
||
state.write(<span class="kw-2">&</span>[<span class="number">0xff</span>]);
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><T> Hash <span class="kw">for </span>[T]
|
||
<span class="kw">where
|
||
</span>T: Hash,
|
||
{
|
||
<span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
<span class="self">self</span>.len().hash(state);
|
||
T::hash_slice(<span class="self">self</span>, state);
|
||
}
|
||
}
|
||
|
||
<span class="macro">macro_rules! </span>array {
|
||
($(<span class="macro-nonterminal">$n</span>:expr),+) => {
|
||
$(
|
||
<span class="kw">impl</span><T> Hash <span class="kw">for </span>[T; <span class="macro-nonterminal">$n</span>]
|
||
<span class="kw">where
|
||
</span>T: Hash,
|
||
{
|
||
<span class="kw">fn </span>hash<H>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H)
|
||
<span class="kw">where
|
||
</span>H: Hasher,
|
||
{
|
||
Hash::hash(<span class="kw-2">&</span><span class="self">self</span>[..], state)
|
||
}
|
||
}
|
||
)+
|
||
};
|
||
}
|
||
|
||
<span class="macro">array!</span>(
|
||
<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>, <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>, <span class="number">12</span>, <span class="number">13</span>, <span class="number">14</span>, <span class="number">15</span>, <span class="number">16</span>, <span class="number">17</span>, <span class="number">18</span>, <span class="number">19</span>, <span class="number">20</span>, <span class="number">21</span>, <span class="number">22</span>, <span class="number">23</span>, <span class="number">24</span>, <span class="number">25</span>,
|
||
<span class="number">26</span>, <span class="number">27</span>, <span class="number">28</span>, <span class="number">29</span>, <span class="number">30</span>, <span class="number">31</span>, <span class="number">32
|
||
</span>);
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, T: <span class="question-mark">?</span>Sized + Hash> Hash <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>T {
|
||
<span class="kw">fn </span>hash<H: Hasher>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H) {
|
||
(<span class="kw-2">**</span><span class="self">self</span>).hash(state);
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, T: <span class="question-mark">?</span>Sized + Hash> Hash <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>T {
|
||
<span class="kw">fn </span>hash<H: Hasher>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>H) {
|
||
(<span class="kw-2">**</span><span class="self">self</span>).hash(state);
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl </span>Hash <span class="kw">for </span>() {
|
||
<span class="kw">fn </span>hash<H: Hasher>(<span class="kw-2">&</span><span class="self">self</span>, _state: <span class="kw-2">&mut </span>H) {}
|
||
}
|
||
|
||
<span class="macro">macro_rules! </span>tuple {
|
||
( $(<span class="macro-nonterminal">$name</span>:ident)+) => (
|
||
<span class="kw">impl</span><$(<span class="macro-nonterminal">$name</span>: Hash),<span class="kw-2">*</span>> Hash <span class="kw">for </span>($(<span class="macro-nonterminal">$name</span>,)<span class="kw-2">*</span>)
|
||
<span class="kw">where
|
||
</span><span class="macro">last_type!</span>($(<span class="macro-nonterminal">$name</span>,)+): <span class="question-mark">?</span>Sized
|
||
{
|
||
<span class="attr">#[allow(non_snake_case)]
|
||
</span><span class="kw">fn </span>hash<S: Hasher>(<span class="kw-2">&</span><span class="self">self</span>, state: <span class="kw-2">&mut </span>S) {
|
||
<span class="kw">let </span>($(<span class="kw-2">ref </span><span class="macro-nonterminal">$name</span>,)<span class="kw-2">*</span>) = <span class="kw-2">*</span><span class="self">self</span>;
|
||
$(<span class="macro-nonterminal">$name</span>.hash(state);)*
|
||
}
|
||
}
|
||
);
|
||
}
|
||
|
||
<span class="macro">macro_rules! </span>last_type {
|
||
(<span class="macro-nonterminal">$a</span>:ident,) => { <span class="macro-nonterminal">$a </span>};
|
||
(<span class="macro-nonterminal">$a</span>:ident, $(<span class="macro-nonterminal">$rest_a</span>:ident,)+) => { <span class="macro">last_type!</span>($(<span class="macro-nonterminal">$rest_a</span>,)+) };
|
||
}
|
||
|
||
<span class="macro">tuple! </span>{ A }
|
||
<span class="macro">tuple! </span>{ A B }
|
||
<span class="macro">tuple! </span>{ A B C }
|
||
<span class="macro">tuple! </span>{ A B C D }
|
||
<span class="macro">tuple! </span>{ A B C D E }
|
||
<span class="macro">tuple! </span>{ A B C D E F }
|
||
<span class="macro">tuple! </span>{ A B C D E F G }
|
||
<span class="macro">tuple! </span>{ A B C D E F G H }
|
||
<span class="macro">tuple! </span>{ A B C D E F G H I }
|
||
<span class="macro">tuple! </span>{ A B C D E F G H I J }
|
||
<span class="macro">tuple! </span>{ A B C D E F G H I J K }
|
||
<span class="macro">tuple! </span>{ A B C D E F G H I J K L }
|
||
|
||
<span class="attr">#[cfg(test)]
|
||
</span><span class="kw">mod </span>test {
|
||
<span class="kw">use super</span>::{FnvHasher, Hash, Hasher};
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>hashes_tuples() {
|
||
<span class="kw">let </span><span class="kw-2">mut </span>h = FnvHasher::default();
|
||
().hash(<span class="kw-2">&mut </span>h);
|
||
(<span class="number">1_usize</span>,).hash(<span class="kw-2">&mut </span>h);
|
||
(<span class="number">1_u8</span>, <span class="number">2_i8</span>).hash(<span class="kw-2">&mut </span>h);
|
||
(<span class="number">1_u16</span>, <span class="number">2_i16</span>, <span class="number">3_u32</span>).hash(<span class="kw-2">&mut </span>h);
|
||
(<span class="number">1_i32</span>, <span class="number">2_u64</span>, <span class="number">3_i64</span>, <span class="bool-val">true</span>).hash(<span class="kw-2">&mut </span>h);
|
||
(<span class="number">1_isize</span>, <span class="string">'a'</span>, <span class="string">"abc"</span>, [<span class="number">1u32</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>], <span class="bool-val">false</span>).hash(<span class="kw-2">&mut </span>h);
|
||
h.finish();
|
||
}
|
||
}
|
||
</code></pre></div></section></main></body></html> |