| <!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 `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/httparse-1.8.0/src/iter.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>iter.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../httparse/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../httparse/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" 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="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span>core::slice; |
| <span class="kw">use </span>core::convert::TryInto; |
| <span class="kw">use </span>core::convert::TryFrom; |
| |
| <span class="kw">pub struct </span>Bytes<<span class="lifetime">'a</span>> { |
| slice: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8], |
| pos: usize |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Bytes<<span class="lifetime">'a</span>> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>new(slice: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8]) -> Bytes<<span class="lifetime">'a</span>> { |
| Bytes { |
| slice, |
| pos: <span class="number">0 |
| </span>} |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>pos(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.pos |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>peek(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><u8> { |
| <span class="self">self</span>.peek_ahead(<span class="number">0</span>) |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>peek_ahead(<span class="kw-2">&</span><span class="self">self</span>, n: usize) -> <span class="prelude-ty">Option</span><u8> { |
| <span class="self">self</span>.slice.get(<span class="self">self</span>.pos + n).copied() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>peek_n<U: TryFrom<<span class="kw-2">&</span><span class="lifetime">'a</span>[u8]>>(<span class="kw-2">&</span><span class="self">self</span>, n: usize) -> <span class="prelude-ty">Option</span><U> { |
| <span class="self">self</span>.slice.get(<span class="self">self</span>.pos..<span class="self">self</span>.pos + n)<span class="question-mark">?</span>.try_into().ok() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub unsafe fn </span>bump(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="macro">debug_assert!</span>(<span class="self">self</span>.pos < <span class="self">self</span>.slice.len(), <span class="string">"overflow"</span>); |
| <span class="self">self</span>.pos += <span class="number">1</span>; |
| } |
| |
| <span class="attribute">#[allow(unused)] |
| #[inline] |
| </span><span class="kw">pub unsafe fn </span>advance(<span class="kw-2">&mut </span><span class="self">self</span>, n: usize) { |
| <span class="macro">debug_assert!</span>(<span class="self">self</span>.pos + n <= <span class="self">self</span>.slice.len(), <span class="string">"overflow"</span>); |
| <span class="self">self</span>.pos += n; |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.slice.len() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub fn </span>slice(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'a </span>[u8] { |
| <span class="comment">// not moving position at all, so it's safe |
| </span><span class="kw">unsafe </span>{ |
| <span class="self">self</span>.slice_skip(<span class="number">0</span>) |
| } |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub unsafe fn </span>slice_skip(<span class="kw-2">&mut </span><span class="self">self</span>, skip: usize) -> <span class="kw-2">&</span><span class="lifetime">'a </span>[u8] { |
| <span class="macro">debug_assert!</span>(<span class="self">self</span>.pos >= skip); |
| <span class="kw">let </span>head_pos = <span class="self">self</span>.pos - skip; |
| <span class="kw">let </span>ptr = <span class="self">self</span>.slice.as_ptr(); |
| <span class="kw">let </span>head = slice::from_raw_parts(ptr, head_pos); |
| <span class="kw">let </span>tail = slice::from_raw_parts(ptr.add(<span class="self">self</span>.pos), <span class="self">self</span>.slice.len() - <span class="self">self</span>.pos); |
| <span class="self">self</span>.pos = <span class="number">0</span>; |
| <span class="self">self</span>.slice = tail; |
| head |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">pub unsafe fn </span>advance_and_commit(<span class="kw-2">&mut </span><span class="self">self</span>, n: usize) { |
| <span class="macro">debug_assert!</span>(<span class="self">self</span>.pos + n <= <span class="self">self</span>.slice.len(), <span class="string">"overflow"</span>); |
| <span class="self">self</span>.pos += n; |
| <span class="kw">let </span>ptr = <span class="self">self</span>.slice.as_ptr(); |
| <span class="kw">let </span>tail = slice::from_raw_parts(ptr.add(n), <span class="self">self</span>.slice.len() - n); |
| <span class="self">self</span>.pos = <span class="number">0</span>; |
| <span class="self">self</span>.slice = tail; |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> AsRef<[u8]> <span class="kw">for </span>Bytes<<span class="lifetime">'a</span>> { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="kw-2">&</span><span class="self">self</span>.slice[<span class="self">self</span>.pos..] |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Iterator <span class="kw">for </span>Bytes<<span class="lifetime">'a</span>> { |
| <span class="kw">type </span>Item = u8; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><u8> { |
| <span class="kw">if </span><span class="self">self</span>.slice.len() > <span class="self">self</span>.pos { |
| <span class="kw">let </span>b = <span class="kw">unsafe </span>{ <span class="kw-2">*</span><span class="self">self</span>.slice.get_unchecked(<span class="self">self</span>.pos) }; |
| <span class="self">self</span>.pos += <span class="number">1</span>; |
| <span class="prelude-val">Some</span>(b) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="httparse" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
