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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 matcher for look-around assertions."><title>LookMatcher in regex_automata::util::look - 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="regex_automata" data-themes="" data-resource-suffix="" data-rustdoc-version="1.77.0 (aedd173a2 2024-03-17)" data-channel="1.77.0" 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 struct"><!--[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><h2 class="location"><a href="#">LookMatcher</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.get_line_terminator">get_line_terminator</a></li><li><a href="#method.is_end">is_end</a></li><li><a href="#method.is_end_crlf">is_end_crlf</a></li><li><a href="#method.is_end_lf">is_end_lf</a></li><li><a href="#method.is_start">is_start</a></li><li><a href="#method.is_start_crlf">is_start_crlf</a></li><li><a href="#method.is_start_lf">is_start_lf</a></li><li><a href="#method.is_word_ascii">is_word_ascii</a></li><li><a href="#method.is_word_ascii_negate">is_word_ascii_negate</a></li><li><a href="#method.is_word_end_ascii">is_word_end_ascii</a></li><li><a href="#method.is_word_end_half_ascii">is_word_end_half_ascii</a></li><li><a href="#method.is_word_end_half_unicode">is_word_end_half_unicode</a></li><li><a href="#method.is_word_end_unicode">is_word_end_unicode</a></li><li><a href="#method.is_word_start_ascii">is_word_start_ascii</a></li><li><a href="#method.is_word_start_half_ascii">is_word_start_half_ascii</a></li><li><a href="#method.is_word_start_half_unicode">is_word_start_half_unicode</a></li><li><a href="#method.is_word_start_unicode">is_word_start_unicode</a></li><li><a href="#method.is_word_unicode">is_word_unicode</a></li><li><a href="#method.is_word_unicode_negate">is_word_unicode_negate</a></li><li><a href="#method.matches">matches</a></li><li><a href="#method.matches_set">matches_set</a></li><li><a href="#method.new">new</a></li><li><a href="#method.set_line_terminator">set_line_terminator</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-LookMatcher">Clone</a></li><li><a href="#impl-Debug-for-LookMatcher">Debug</a></li><li><a href="#impl-Default-for-LookMatcher">Default</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-RefUnwindSafe-for-LookMatcher">RefUnwindSafe</a></li><li><a href="#impl-Send-for-LookMatcher">Send</a></li><li><a href="#impl-Sync-for-LookMatcher">Sync</a></li><li><a href="#impl-Unpin-for-LookMatcher">Unpin</a></li><li><a href="#impl-UnwindSafe-for-LookMatcher">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T">Borrow&lt;T&gt;</a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T">BorrowMut&lt;T&gt;</a></li><li><a href="#impl-From%3CT%3E-for-T">From&lt;T&gt;</a></li><li><a href="#impl-Into%3CU%3E-for-T">Into&lt;U&gt;</a></li><li><a href="#impl-ToOwned-for-T">ToOwned</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T">TryFrom&lt;U&gt;</a></li><li><a href="#impl-TryInto%3CU%3E-for-T">TryInto&lt;U&gt;</a></li></ul></section><h2><a href="index.html">In regex_automata::util::look</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>Struct <a href="../../index.html">regex_automata</a>::<wbr><a href="../index.html">util</a>::<wbr><a href="index.html">look</a>::<wbr><a class="struct" href="#">LookMatcher</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/look.rs.html#577-579">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub struct LookMatcher { <span class="comment">/* private fields */</span> }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A matcher for look-around assertions.</p>
<p>This matcher permits configuring aspects of how look-around assertions are
matched.</p>
<h2 id="example"><a class="doc-anchor" href="#example">§</a>Example</h2>
<p>A <code>LookMatcher</code> can change the line terminator used for matching multi-line
anchors such as <code>(?m:^)</code> and <code>(?m:$)</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_automata::{
nfa::thompson::{<span class="self">self</span>, pikevm::PikeVM},
util::look::LookMatcher,
Match, Input,
};
<span class="kw">let </span><span class="kw-2">mut </span>lookm = LookMatcher::new();
lookm.set_line_terminator(<span class="string">b'\x00'</span>);
<span class="kw">let </span>re = PikeVM::builder()
.thompson(thompson::Config::new().look_matcher(lookm))
.build(<span class="string">r"(?m)^[a-z]+$"</span>)<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>cache = re.create_cache();
<span class="comment">// Multi-line assertions now use NUL as a terminator.
</span><span class="macro">assert_eq!</span>(
<span class="prelude-val">Some</span>(Match::must(<span class="number">0</span>, <span class="number">1</span>..<span class="number">4</span>)),
re.find(<span class="kw-2">&amp;mut </span>cache, <span class="string">b"\x00abc\x00"</span>),
);
<span class="comment">// ... and \n is no longer recognized as a terminator.
</span><span class="macro">assert_eq!</span>(
<span class="prelude-val">None</span>,
re.find(<span class="kw-2">&amp;mut </span>cache, <span class="string">b"\nabc\n"</span>),
);
</code></pre></div>
</div></details><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-LookMatcher" class="impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#581-1261">source</a><a href="#impl-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.new" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#583-585">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fn">new</a>() -&gt; <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h4></section></summary><div class="docblock"><p>Creates a new default matcher for look-around assertions.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.set_line_terminator" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#599-602">source</a><h4 class="code-header">pub fn <a href="#method.set_line_terminator" class="fn">set_line_terminator</a>(&amp;mut self, byte: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>) -&gt; &amp;mut <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h4></section></summary><div class="docblock"><p>Sets the line terminator for use with <code>(?m:^)</code> and <code>(?m:$)</code>.</p>
<p>Namely, instead of <code>^</code> matching after <code>\n</code> and <code>$</code> matching immediately
before a <code>\n</code>, this will cause it to match after and before the byte
given.</p>
<p>It can occasionally be useful to use this to configure the line
terminator to the NUL byte when searching binary data.</p>
<p>Note that this does not apply to CRLF-aware line anchors such as
<code>(?Rm:^)</code> and <code>(?Rm:$)</code>. CRLF-aware line anchors are hard-coded to
use <code>\r</code> and <code>\n</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.get_line_terminator" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#611-613">source</a><h4 class="code-header">pub fn <a href="#method.get_line_terminator" class="fn">get_line_terminator</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a></h4></section></summary><div class="docblock"><p>Returns the line terminator that was configured for this matcher.</p>
<p>If no line terminator was configured, then this returns <code>\n</code>.</p>
<p>Note that the line terminator should only be used for matching <code>(?m:^)</code>
and <code>(?m:$)</code> assertions. It specifically should <em>not</em> be used for
matching the CRLF aware assertions <code>(?Rm:^)</code> and <code>(?Rm:$)</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.matches" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#635-637">source</a><h4 class="code-header">pub fn <a href="#method.matches" class="fn">matches</a>(&amp;self, look: <a class="enum" href="enum.Look.html" title="enum regex_automata::util::look::Look">Look</a>, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when the position <code>at</code> in <code>haystack</code> satisfies the given
look-around assertion.</p>
<h5 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h5>
<p>This panics when testing any Unicode word boundary assertion in this
set and when the Unicode word data is not available. Specifically, this
only occurs when the <code>unicode-word-boundary</code> feature is not enabled.</p>
<p>Since it’s generally expected that this routine is called inside of
a matching engine, callers should check the error condition when
building the matching engine. If there is a Unicode word boundary
in the matcher and the data isn’t available, then the matcher should
fail to build.</p>
<p>Callers can check the error condition with <a href="struct.LookSet.html#method.available" title="method regex_automata::util::look::LookSet::available"><code>LookSet::available</code></a>.</p>
<p>This also may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.matches_set" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#720-727">source</a><h4 class="code-header">pub fn <a href="#method.matches_set" class="fn">matches_set</a>(&amp;self, set: <a class="struct" href="struct.LookSet.html" title="struct regex_automata::util::look::LookSet">LookSet</a>, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <em>all</em> of the assertions in the given set match at the
given position in the haystack.</p>
<h5 id="panics-1"><a class="doc-anchor" href="#panics-1">§</a>Panics</h5>
<p>This panics when testing any Unicode word boundary assertion in this
set and when the Unicode word data is not available. Specifically, this
only occurs when the <code>unicode-word-boundary</code> feature is not enabled.</p>
<p>Since it’s generally expected that this routine is called inside of
a matching engine, callers should check the error condition when
building the matching engine. If there is a Unicode word boundary
in the matcher and the data isn’t available, then the matcher should
fail to build.</p>
<p>Callers can check the error condition with <a href="struct.LookSet.html#method.available" title="method regex_automata::util::look::LookSet::available"><code>LookSet::available</code></a>.</p>
<p>This also may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_start" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#907-909">source</a><h4 class="code-header">pub fn <a href="#method.is_start" class="fn">is_start</a>(&amp;self, _haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.Start" title="variant regex_automata::util::look::Look::Start"><code>Look::Start</code></a> is satisfied <code>at</code> the given position
in <code>haystack</code>.</p>
<h5 id="panics-2"><a class="doc-anchor" href="#panics-2">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_end" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#919-921">source</a><h4 class="code-header">pub fn <a href="#method.is_end" class="fn">is_end</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.End" title="variant regex_automata::util::look::Look::End"><code>Look::End</code></a> is satisfied <code>at</code> the given position in
<code>haystack</code>.</p>
<h5 id="panics-3"><a class="doc-anchor" href="#panics-3">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_start_lf" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#931-933">source</a><h4 class="code-header">pub fn <a href="#method.is_start_lf" class="fn">is_start_lf</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.StartLF" title="variant regex_automata::util::look::Look::StartLF"><code>Look::StartLF</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-4"><a class="doc-anchor" href="#panics-4">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_end_lf" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#943-945">source</a><h4 class="code-header">pub fn <a href="#method.is_end_lf" class="fn">is_end_lf</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.EndLF" title="variant regex_automata::util::look::Look::EndLF"><code>Look::EndLF</code></a> is satisfied <code>at</code> the given position
in <code>haystack</code>.</p>
<h5 id="panics-5"><a class="doc-anchor" href="#panics-5">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_start_crlf" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#955-960">source</a><h4 class="code-header">pub fn <a href="#method.is_start_crlf" class="fn">is_start_crlf</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.StartCRLF" title="variant regex_automata::util::look::Look::StartCRLF"><code>Look::StartCRLF</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-6"><a class="doc-anchor" href="#panics-6">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_end_crlf" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#970-975">source</a><h4 class="code-header">pub fn <a href="#method.is_end_crlf" class="fn">is_end_crlf</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.EndCRLF" title="variant regex_automata::util::look::Look::EndCRLF"><code>Look::EndCRLF</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-7"><a class="doc-anchor" href="#panics-7">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_ascii" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#985-990">source</a><h4 class="code-header">pub fn <a href="#method.is_word_ascii" class="fn">is_word_ascii</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordAscii" title="variant regex_automata::util::look::Look::WordAscii"><code>Look::WordAscii</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-8"><a class="doc-anchor" href="#panics-8">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_ascii_negate" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1000-1002">source</a><h4 class="code-header">pub fn <a href="#method.is_word_ascii_negate" class="fn">is_word_ascii_negate</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordAsciiNegate" title="variant regex_automata::util::look::Look::WordAsciiNegate"><code>Look::WordAsciiNegate</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-9"><a class="doc-anchor" href="#panics-9">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_unicode" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1018-1026">source</a><h4 class="code-header">pub fn <a href="#method.is_word_unicode" class="fn">is_word_unicode</a>(
&amp;self,
haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>],
at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a>, <a class="struct" href="struct.UnicodeWordBoundaryError.html" title="struct regex_automata::util::look::UnicodeWordBoundaryError">UnicodeWordBoundaryError</a>&gt;</h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordUnicode" title="variant regex_automata::util::look::Look::WordUnicode"><code>Look::WordUnicode</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-10"><a class="doc-anchor" href="#panics-10">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
<h5 id="errors"><a class="doc-anchor" href="#errors">§</a>Errors</h5>
<p>This returns an error when Unicode word boundary tables
are not available. Specifically, this only occurs when the
<code>unicode-word-boundary</code> feature is not enabled.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_unicode_negate" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1042-1089">source</a><h4 class="code-header">pub fn <a href="#method.is_word_unicode_negate" class="fn">is_word_unicode_negate</a>(
&amp;self,
haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>],
at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a>, <a class="struct" href="struct.UnicodeWordBoundaryError.html" title="struct regex_automata::util::look::UnicodeWordBoundaryError">UnicodeWordBoundaryError</a>&gt;</h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordUnicodeNegate" title="variant regex_automata::util::look::Look::WordUnicodeNegate"><code>Look::WordUnicodeNegate</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-11"><a class="doc-anchor" href="#panics-11">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
<h5 id="errors-1"><a class="doc-anchor" href="#errors-1">§</a>Errors</h5>
<p>This returns an error when Unicode word boundary tables
are not available. Specifically, this only occurs when the
<code>unicode-word-boundary</code> feature is not enabled.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_start_ascii" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1099-1104">source</a><h4 class="code-header">pub fn <a href="#method.is_word_start_ascii" class="fn">is_word_start_ascii</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordStartAscii" title="variant regex_automata::util::look::Look::WordStartAscii"><code>Look::WordStartAscii</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-12"><a class="doc-anchor" href="#panics-12">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_end_ascii" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1114-1119">source</a><h4 class="code-header">pub fn <a href="#method.is_word_end_ascii" class="fn">is_word_end_ascii</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordEndAscii" title="variant regex_automata::util::look::Look::WordEndAscii"><code>Look::WordEndAscii</code></a> is satisfied <code>at</code> the given
position in <code>haystack</code>.</p>
<h5 id="panics-13"><a class="doc-anchor" href="#panics-13">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_start_unicode" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1135-1143">source</a><h4 class="code-header">pub fn <a href="#method.is_word_start_unicode" class="fn">is_word_start_unicode</a>(
&amp;self,
haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>],
at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a>, <a class="struct" href="struct.UnicodeWordBoundaryError.html" title="struct regex_automata::util::look::UnicodeWordBoundaryError">UnicodeWordBoundaryError</a>&gt;</h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordStartUnicode" title="variant regex_automata::util::look::Look::WordStartUnicode"><code>Look::WordStartUnicode</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-14"><a class="doc-anchor" href="#panics-14">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
<h5 id="errors-2"><a class="doc-anchor" href="#errors-2">§</a>Errors</h5>
<p>This returns an error when Unicode word boundary tables
are not available. Specifically, this only occurs when the
<code>unicode-word-boundary</code> feature is not enabled.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_end_unicode" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1159-1167">source</a><h4 class="code-header">pub fn <a href="#method.is_word_end_unicode" class="fn">is_word_end_unicode</a>(
&amp;self,
haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>],
at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a>, <a class="struct" href="struct.UnicodeWordBoundaryError.html" title="struct regex_automata::util::look::UnicodeWordBoundaryError">UnicodeWordBoundaryError</a>&gt;</h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordEndUnicode" title="variant regex_automata::util::look::Look::WordEndUnicode"><code>Look::WordEndUnicode</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-15"><a class="doc-anchor" href="#panics-15">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
<h5 id="errors-3"><a class="doc-anchor" href="#errors-3">§</a>Errors</h5>
<p>This returns an error when Unicode word boundary tables
are not available. Specifically, this only occurs when the
<code>unicode-word-boundary</code> feature is not enabled.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_start_half_ascii" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1177-1184">source</a><h4 class="code-header">pub fn <a href="#method.is_word_start_half_ascii" class="fn">is_word_start_half_ascii</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordStartHalfAscii" title="variant regex_automata::util::look::Look::WordStartHalfAscii"><code>Look::WordStartHalfAscii</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-16"><a class="doc-anchor" href="#panics-16">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_end_half_ascii" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1194-1198">source</a><h4 class="code-header">pub fn <a href="#method.is_word_end_half_ascii" class="fn">is_word_end_half_ascii</a>(&amp;self, haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>], at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordEndHalfAscii" title="variant regex_automata::util::look::Look::WordEndHalfAscii"><code>Look::WordEndHalfAscii</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-17"><a class="doc-anchor" href="#panics-17">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_start_half_unicode" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1214-1229">source</a><h4 class="code-header">pub fn <a href="#method.is_word_start_half_unicode" class="fn">is_word_start_half_unicode</a>(
&amp;self,
haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>],
at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a>, <a class="struct" href="struct.UnicodeWordBoundaryError.html" title="struct regex_automata::util::look::UnicodeWordBoundaryError">UnicodeWordBoundaryError</a>&gt;</h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordStartHalfUnicode" title="variant regex_automata::util::look::Look::WordStartHalfUnicode"><code>Look::WordStartHalfUnicode</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-18"><a class="doc-anchor" href="#panics-18">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
<h5 id="errors-4"><a class="doc-anchor" href="#errors-4">§</a>Errors</h5>
<p>This returns an error when Unicode word boundary tables
are not available. Specifically, this only occurs when the
<code>unicode-word-boundary</code> feature is not enabled.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_word_end_half_unicode" class="method"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1245-1260">source</a><h4 class="code-header">pub fn <a href="#method.is_word_end_half_unicode" class="fn">is_word_end_half_unicode</a>(
&amp;self,
haystack: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.u8.html">u8</a>],
at: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.usize.html">usize</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.bool.html">bool</a>, <a class="struct" href="struct.UnicodeWordBoundaryError.html" title="struct regex_automata::util::look::UnicodeWordBoundaryError">UnicodeWordBoundaryError</a>&gt;</h4></section></summary><div class="docblock"><p>Returns true when <a href="enum.Look.html#variant.WordEndHalfUnicode" title="variant regex_automata::util::look::Look::WordEndHalfUnicode"><code>Look::WordEndHalfUnicode</code></a> is satisfied <code>at</code> the
given position in <code>haystack</code>.</p>
<h5 id="panics-19"><a class="doc-anchor" href="#panics-19">§</a>Panics</h5>
<p>This may panic when <code>at &gt; haystack.len()</code>. Note that <code>at == haystack.len()</code> is legal and guaranteed not to panic.</p>
<h5 id="errors-5"><a class="doc-anchor" href="#errors-5">§</a>Errors</h5>
<p>This returns an error when Unicode word boundary tables
are not available. Specifically, this only occurs when the
<code>unicode-word-boundary</code> feature is not enabled.</p>
</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-LookMatcher" class="impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#576">source</a><a href="#impl-Clone-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#576">source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&amp;self) -&gt; <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.77.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.77.0/src/core/clone.rs.html#169">source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.reference.html">&amp;Self</a>)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.77.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-LookMatcher" class="impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#576">source</a><a href="#impl-Debug-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#576">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/1.77.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>&lt;'_&gt;) -&gt; <a class="type" href="https://doc.rust-lang.org/1.77.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.77.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-LookMatcher" class="impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1263-1267">source</a><a href="#impl-Default-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.default" class="method trait-impl"><a class="src rightside" href="../../../src/regex_automata/util/look.rs.html#1264-1266">source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -&gt; <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.77.0/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-LookMatcher" class="impl"><a href="#impl-RefUnwindSafe-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section><section id="impl-Send-for-LookMatcher" class="impl"><a href="#impl-Send-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section><section id="impl-Sync-for-LookMatcher" class="impl"><a href="#impl-Sync-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section><section id="impl-Unpin-for-LookMatcher" class="impl"><a href="#impl-Unpin-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section><section id="impl-UnwindSafe-for-LookMatcher" class="impl"><a href="#impl-UnwindSafe-for-LookMatcher" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.LookMatcher.html" title="struct regex_automata::util::look::LookMatcher">LookMatcher</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/any.rs.html#140">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/any.rs.html#141">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/1.77.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.77.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/borrow.rs.html#208">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/borrow.rs.html#210">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.reference.html">&amp;T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.77.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/borrow.rs.html#216">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/1.77.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/borrow.rs.html#217">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.reference.html">&amp;mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.77.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#764">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#767">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -&gt; T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#747-749">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#757">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -&gt; U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for U</code> chooses to do.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToOwned-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/alloc/borrow.rs.html#83-85">source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl"><a href="#associatedtype.Owned" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.77.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/alloc/borrow.rs.html#88">source</a><a href="#method.to_owned" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&amp;self) -&gt; T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.77.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/alloc/borrow.rs.html#92">source</a><a href="#method.clone_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&amp;self, target: <a class="primitive" href="https://doc.rust-lang.org/1.77.0/std/primitive.reference.html">&amp;mut T</a>)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/1.77.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#804-806">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#811">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#789-791">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.77.0/src/core/convert/mod.rs.html#796">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.77.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.77.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html>
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