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deploy: c568cd4876f87c92ab3102b3735a83cf3fe832f2
2024-04-13 08:42:00 +00:00
<!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="Predefined callback that will inform the `Lexer` to skip a definition."><title>skip in logos - Rust</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/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-5bc39a1768837dd0.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="logos" data-themes="" data-resource-suffix="" data-rustdoc-version="1.77.2 (25ef9e3d8 2024-04-09)" data-channel="1.77.2" data-search-js="search-dd67cee4cfa65049.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-4c98445ec4002617.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-48f368f3872407c8.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-04d5337699b92874.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 fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button><a class="logo-container" href="../logos/index.html"><img src="https://maciej.codes/kosz/logos.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../logos/index.html"><img src="https://maciej.codes/kosz/logos.png" alt="logo"></a><h2><a href="../logos/index.html">logos</a><span class="version">0.14.0</span></h2></div><div class="sidebar-elems"></div></nav><div class="sidebar-resizer"></div>
deploy: 4a83cfd6f9c58b14a87234162281aad1aef83c3e
2024-02-13 06:38:44 +00:00
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../logos/all.html" title="show sidebar"></a></div><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" tabindex="-1"><a href="../help.html" title="help">?</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="main-heading"><h1>Function <a href="index.html">logos</a>::<wbr><a class="fn" href="#">skip</a><button id="copy-path" title="Copy item path to clipboard"><img src="../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../src/logos/lib.rs.html#256-258">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub fn skip&lt;'source, Token: <a class="trait" href="trait.Logos.html" title="trait logos::Logos">Logos</a>&lt;'source&gt;&gt;(
_: &amp;mut <a class="struct" href="struct.Lexer.html" title="struct logos::Lexer">Lexer</a>&lt;'source, Token&gt;
) -&gt; <a class="struct" href="struct.Skip.html" title="struct logos::Skip">Skip</a></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Predefined callback that will inform the <code>Lexer</code> to skip a definition.</p>
deploy: 39fc7f2b9fd58ce67982b1c71c788f3b031ae3df
2024-03-27 11:12:16 +00:00
<h2 id="example"><a class="doc-anchor" href="#example">§</a>Example</h2>
deploy: 4a83cfd6f9c58b14a87234162281aad1aef83c3e
2024-02-13 06:38:44 +00:00
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>logos::Logos;
<span class="attr">#[derive(Logos, Debug, PartialEq)]
</span><span class="kw">enum </span>Token&lt;<span class="lifetime">'a</span>&gt; {
<span class="comment">// We will treat "abc" as if it was whitespace
</span><span class="attr">#[regex(<span class="string">" |abc"</span>, logos::skip, priority = <span class="number">3</span>)]
</span>Ignored,
<span class="attr">#[regex(<span class="string">"[a-zA-Z]+"</span>)]
</span>Text(<span class="kw-2">&amp;</span><span class="lifetime">'a </span>str),
}
<span class="kw">let </span>tokens: Vec&lt;<span class="kw">_</span>&gt; = Token::lexer(<span class="string">"Hello abc world"</span>).collect();
<span class="macro">assert_eq!</span>(
tokens,
<span class="kw-2">&amp;</span>[
<span class="prelude-val">Ok</span>(Token::Text(<span class="string">"Hello"</span>)),
<span class="prelude-val">Ok</span>(Token::Text(<span class="string">"world"</span>)),
],
);</code></pre></div>
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