| <!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/aho-corasick-1.0.2/src/util/special.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>special.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="../../../aho_corasick/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="../../../aho_corasick/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> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::util::primitives::StateID; |
| |
| <span class="doccomment">/// A collection of sentinel state IDs for Aho-Corasick automata. |
| /// |
| /// This specifically enables the technique by which we determine which states |
| /// are dead, matches or start states. Namely, by arranging states in a |
| /// particular order, we can determine the type of a state simply by looking at |
| /// its ID. |
| </span><span class="attribute">#[derive(Clone, Debug)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Special { |
| <span class="doccomment">/// The maximum ID of all the "special" states. This corresponds either to |
| /// start_anchored_id when a prefilter is active and max_match_id when a |
| /// prefilter is not active. The idea here is that if there is no prefilter, |
| /// then there is no point in treating start states as special. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) max_special_id: StateID, |
| <span class="doccomment">/// The maximum ID of all the match states. Any state ID bigger than this |
| /// is guaranteed to be a non-match ID. |
| /// |
| /// It is possible and legal for max_match_id to be equal to |
| /// start_anchored_id, which occurs precisely in the case where the empty |
| /// string is a pattern that was added to the underlying automaton. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) max_match_id: StateID, |
| <span class="doccomment">/// The state ID of the start state used for unanchored searches. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) start_unanchored_id: StateID, |
| <span class="doccomment">/// The state ID of the start state used for anchored searches. This is |
| /// always start_unanchored_id+1. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) start_anchored_id: StateID, |
| } |
| |
| <span class="kw">impl </span>Special { |
| <span class="doccomment">/// Create a new set of "special" state IDs with all IDs initialized to |
| /// zero. The general idea here is that they will be updated and set to |
| /// correct values later. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>zero() -> Special { |
| Special { |
| max_special_id: StateID::ZERO, |
| max_match_id: StateID::ZERO, |
| start_unanchored_id: StateID::ZERO, |
| start_anchored_id: StateID::ZERO, |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="aho_corasick" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |