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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="A convenience routine for parsing many patterns into HIR value with the default configuration."><title>parse_many in regex_automata::util::syntax - Rust</title><script> if (window.location.protocol !== "file:") document.write(`<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">`)</script><link rel="stylesheet" href="../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../static.files/rustdoc-e935ef01ae1c1829.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="1.78.0 (9b00956e5 2024-04-29)" data-channel="1.78.0" data-search-js="search-42d8da7a6b9792c2.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-12cf3b4f4f9dc36d.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></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../regex_automata/index.html">regex_automata</a><span class="version">0.4.6</span></h2></div><div class="sidebar-elems"><h2><a href="index.html">In regex_automata::util::syntax</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../../regex_automata/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">regex_automata</a>::<wbr><a href="../index.html">util</a>::<wbr><a href="index.html">syntax</a>::<wbr><a class="fn" href="#">parse_many</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/regex_automata/util/syntax.rs.html#63-65">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 parse_many&lt;P: <a class="trait" href="https://doc.rust-lang.org/1.78.0/core/convert/trait.AsRef.html" title="trait core::convert::AsRef">AsRef</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.str.html">str</a>&gt;&gt;(patterns: &amp;<a class="primitive" href="https://doc.rust-lang.org/1.78.0/std/primitive.slice.html">[P]</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.78.0/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="struct" href="../../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>&gt;, <a class="enum" href="../../../regex_syntax/error/enum.Error.html" title="enum regex_syntax::error::Error">Error</a>&gt;</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A convenience routine for parsing many patterns into HIR value with the
default configuration.</p>
<h2 id="example"><a class="doc-anchor" href="#example">§</a>Example</h2>
<p>This shows how to parse many patterns into an corresponding HIR values:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>{
regex_automata::util::syntax,
regex_syntax::hir::Properties,
};
<span class="kw">let </span>hirs = syntax::parse_many(<span class="kw-2">&amp;</span>[
<span class="string">r"([a-z]+)|([0-9]+)"</span>,
<span class="string">r"foo(A-Z]+)bar"</span>,
])<span class="question-mark">?</span>;
<span class="kw">let </span>props = Properties::union(hirs.iter().map(|h| h.properties()));
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), props.static_explicit_captures_len());
</code></pre></div>
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