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30 lines
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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="Types and routines specific to sparse DFAs."><title>regex_automata::dfa::sparse - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="regex_automata" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../../static.files/storage-e2aeef58.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Module sparse</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../regex_automata/index.html">regex_<wbr>automata</a><span class="version">0.4.14</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module sparse</a></h2><h3><a href="#structs">Module Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In regex_<wbr>automata::<wbr>dfa</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../index.html">regex_automata</a>::<wbr><a href="../index.html">dfa</a></div><h1>Module <span>sparse</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../../src/regex_automata/dfa/sparse.rs.html#1-2655">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Types and routines specific to sparse DFAs.</p>
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<p>This module is the home of <a href="struct.DFA.html" title="struct regex_automata::dfa::sparse::DFA"><code>sparse::DFA</code></a>.</p>
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<p>Unlike the <a href="../dense/index.html" title="mod regex_automata::dfa::dense"><code>dense</code></a> module, this module does not contain a builder or
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configuration specific for sparse DFAs. Instead, the intended way to build a
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sparse DFA is either by using a default configuration with its constructor
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<a href="struct.DFA.html#method.new" title="associated function regex_automata::dfa::sparse::DFA::new"><code>sparse::DFA::new</code></a>, or by first configuring the construction of a
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dense DFA with <a href="../dense/struct.Builder.html" title="struct regex_automata::dfa::dense::Builder"><code>dense::Builder</code></a> and then calling <a href="../dense/struct.DFA.html#method.to_sparse" title="method regex_automata::dfa::dense::DFA::to_sparse"><code>dense::DFA::to_sparse</code></a>.
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For example, this configures a sparse DFA to do an overlapping search:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_automata::{
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dfa::{Automaton, OverlappingState, dense},
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HalfMatch, Input, MatchKind,
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};
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<span class="kw">let </span>dense_re = dense::Builder::new()
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.configure(dense::Config::new().match_kind(MatchKind::All))
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.build(<span class="string">r"Samwise|Sam"</span>)<span class="question-mark">?</span>;
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<span class="kw">let </span>sparse_re = dense_re.to_sparse()<span class="question-mark">?</span>;
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<span class="comment">// Setup our haystack and initial start state.
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</span><span class="kw">let </span>input = Input::new(<span class="string">"Samwise"</span>);
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<span class="kw">let </span><span class="kw-2">mut </span>state = OverlappingState::start();
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<span class="comment">// First, 'Sam' will match.
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</span>sparse_re.try_search_overlapping_fwd(<span class="kw-2">&</span>input, <span class="kw-2">&mut </span>state)<span class="question-mark">?</span>;
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<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(HalfMatch::must(<span class="number">0</span>, <span class="number">3</span>)), state.get_match());
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<span class="comment">// And now 'Samwise' will match.
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</span>sparse_re.try_search_overlapping_fwd(<span class="kw-2">&</span>input, <span class="kw-2">&mut </span>state)<span class="question-mark">?</span>;
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<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(HalfMatch::must(<span class="number">0</span>, <span class="number">7</span>)), state.get_match());</code></pre></div></div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.DFA.html" title="struct regex_automata::dfa::sparse::DFA">DFA</a></dt><dd>A sparse deterministic finite automaton (DFA) with variable sized states.</dd></dl></section></div></main></body></html> |