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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="The kind of match semantics to use for a regex pattern."><title>MatchKind in regex_automata - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-dd39b87e5fcfba68.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="1.80.0 (051478957 2024-07-21)" data-channel="1.80.0" data-search-js="search-d52510db62a78183.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-118b08c4c78b968e.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-20a3ad099b048cf2.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-df360f571f6edeae.css"></noscript><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 enum"><!--[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">0.4.7</span></h2></div><h2 class="location"><a href="#">MatchKind</a></h2><div class="sidebar-elems"><section><h3><a href="#variants">Variants</a></h3><ul class="block variant"><li><a href="#variant.All">All</a></li><li><a href="#variant.LeftmostFirst">LeftmostFirst</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-MatchKind">Clone</a></li><li><a href="#impl-Copy-for-MatchKind">Copy</a></li><li><a href="#impl-Debug-for-MatchKind">Debug</a></li><li><a href="#impl-Default-for-MatchKind">Default</a></li><li><a href="#impl-Eq-for-MatchKind">Eq</a></li><li><a href="#impl-PartialEq-for-MatchKind">PartialEq</a></li><li><a href="#impl-StructuralPartialEq-for-MatchKind">StructuralPartialEq</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-Freeze-for-MatchKind">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-MatchKind">RefUnwindSafe</a></li><li><a href="#impl-Send-for-MatchKind">Send</a></li><li><a href="#impl-Sync-for-MatchKind">Sync</a></li><li><a href="#impl-Unpin-for-MatchKind">Unpin</a></li><li><a href="#impl-UnwindSafe-for-MatchKind">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<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-T">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T">Into<U></a></li><li><a href="#impl-ToOwned-for-T">ToOwned</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T">TryInto<U></a></li></ul></section><h2><a href="index.html">In crate regex_automata</a></h2></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1>Enum <a href="index.html">regex_automata</a>::<wbr><a class="enum" href="#">MatchKind</a><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><span class="out-of-band"><a class="src" href="../src/regex_automata/util/search.rs.html#1698-1720">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code><div class="code-attribute">#[non_exhaustive]</div>pub enum MatchKind {
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All,
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LeftmostFirst,
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>The kind of match semantics to use for a regex pattern.</p>
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<p>The default match kind is <code>LeftmostFirst</code>, and this corresponds to the
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match semantics used by most backtracking engines, such as Perl.</p>
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<h2 id="leftmost-first-or-preference-order-match-semantics"><a class="doc-anchor" href="#leftmost-first-or-preference-order-match-semantics">§</a>Leftmost first or “preference order” match semantics</h2>
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<p>Leftmost-first semantics determine which match to report when there are
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multiple paths through a regex that match at the same position. The tie is
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essentially broken by how a backtracker would behave. For example, consider
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running the regex <code>foofoofoo|foofoo|foo</code> on the haystack <code>foofoo</code>. In this
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case, both the <code>foofoo</code> and <code>foo</code> branches match at position <code>0</code>. So should
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the end of the match be <code>3</code> or <code>6</code>?</p>
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<p>A backtracker will conceptually work by trying <code>foofoofoo</code> and failing.
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Then it will try <code>foofoo</code>, find the match and stop there. Thus, the
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leftmost-first match position is <code>6</code>. This is called “leftmost-first” or
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“preference order” because the order of the branches as written in the
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regex pattern is what determines how to break the tie.</p>
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<p>(Note that leftmost-longest match semantics, which break ties by always
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taking the longest matching string, are not currently supported by this
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crate. These match semantics tend to be found in POSIX regex engines.)</p>
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<p>This example shows how leftmost-first semantics work, and how it even
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applies to multi-pattern regexes:</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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nfa::thompson::pikevm::PikeVM,
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Match,
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};
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<span class="kw">let </span>re = PikeVM::new_many(<span class="kw-2">&</span>[
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<span class="string">r"foofoofoo"</span>,
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<span class="string">r"foofoo"</span>,
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<span class="string">r"foo"</span>,
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])<span class="question-mark">?</span>;
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<span class="kw">let </span><span class="kw-2">mut </span>cache = re.create_cache();
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<span class="kw">let </span>got: Vec<Match> = re.find_iter(<span class="kw-2">&mut </span>cache, <span class="string">"foofoo"</span>).collect();
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<span class="kw">let </span>expected = <span class="macro">vec!</span>[Match::must(<span class="number">1</span>, <span class="number">0</span>..<span class="number">6</span>)];
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<span class="macro">assert_eq!</span>(expected, got);
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</code></pre></div>
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<h2 id="all-matches"><a class="doc-anchor" href="#all-matches">§</a>All matches</h2>
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<p>The <code>All</code> match semantics report any and all matches, and generally will
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attempt to match as much as possible. It doesn’t respect any sort of match
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priority at all, so things like non-greedy matching don’t work in this
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mode.</p>
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<p>The fact that non-greedy matching doesn’t work generally makes most forms
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of unanchored non-overlapping searches have unintuitive behavior. Namely,
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unanchored searches behave as if there is a <code>(?s-u:.)*?</code> prefix at the
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beginning of the pattern, which is specifically non-greedy. Since it will
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be treated as greedy in <code>All</code> match semantics, this generally means that
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it will first attempt to consume all of the haystack and is likely to wind
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up skipping matches.</p>
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<p>Generally speaking, <code>All</code> should only be used in two circumstances:</p>
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<ul>
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<li>When running an anchored search and there is a desire to match as much as
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possible. For example, when building a reverse regex matcher to find the
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start of a match after finding the end. In this case, the reverse search
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is anchored to the end of the match found by the forward search.</li>
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<li>When running overlapping searches. Since <code>All</code> encodes all possible
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matches, this is generally what you want for an overlapping search. If you
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try to use leftmost-first in an overlapping search, it is likely to produce
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counter-intuitive results since leftmost-first specifically excludes some
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matches from its underlying finite state machine.</li>
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</ul>
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<p>This example demonstrates the counter-intuitive behavior of <code>All</code> semantics
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when using a standard leftmost unanchored 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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nfa::thompson::pikevm::PikeVM,
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Match, MatchKind,
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};
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<span class="kw">let </span>re = PikeVM::builder()
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.configure(PikeVM::config().match_kind(MatchKind::All))
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.build(<span class="string">"foo"</span>)<span class="question-mark">?</span>;
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<span class="kw">let </span>hay = <span class="string">"first foo second foo wat"</span>;
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<span class="kw">let </span><span class="kw-2">mut </span>cache = re.create_cache();
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<span class="kw">let </span>got: Vec<Match> = re.find_iter(<span class="kw-2">&mut </span>cache, hay).collect();
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<span class="comment">// Notice that it completely skips the first 'foo'!
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</span><span class="kw">let </span>expected = <span class="macro">vec!</span>[Match::must(<span class="number">0</span>, <span class="number">17</span>..<span class="number">20</span>)];
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<span class="macro">assert_eq!</span>(expected, got);
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</code></pre></div>
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<p>This second example shows how <code>All</code> semantics are useful for an overlapping
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search. Note that we use lower level lazy DFA APIs here since the NFA
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engines only currently support a very limited form of 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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hybrid::dfa::{DFA, OverlappingState},
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HalfMatch, Input, MatchKind,
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};
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<span class="kw">let </span>re = DFA::builder()
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<span class="comment">// If we didn't set 'All' semantics here, then the regex would only
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// match 'foo' at offset 3 and nothing else. Why? Because the state
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// machine implements preference order and knows that the 'foofoo' and
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// 'foofoofoo' branches can never match since 'foo' will always match
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// when they match and take priority.
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</span>.configure(DFA::config().match_kind(MatchKind::All))
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.build(<span class="string">r"foo|foofoo|foofoofoo"</span>)<span class="question-mark">?</span>;
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<span class="kw">let </span><span class="kw-2">mut </span>cache = re.create_cache();
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<span class="kw">let </span><span class="kw-2">mut </span>state = OverlappingState::start();
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<span class="kw">let </span>input = Input::new(<span class="string">"foofoofoo"</span>);
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<span class="kw">let </span><span class="kw-2">mut </span>got = <span class="macro">vec!</span>[];
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<span class="kw">loop </span>{
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re.try_search_overlapping_fwd(<span class="kw-2">&mut </span>cache, <span class="kw-2">&</span>input, <span class="kw-2">&mut </span>state)<span class="question-mark">?</span>;
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<span class="kw">let </span>m = <span class="kw">match </span>state.get_match() {
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<span class="prelude-val">None </span>=> <span class="kw">break</span>,
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<span class="prelude-val">Some</span>(m) => m,
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};
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got.push(m);
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}
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<span class="kw">let </span>expected = <span class="macro">vec!</span>[
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HalfMatch::must(<span class="number">0</span>, <span class="number">3</span>),
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HalfMatch::must(<span class="number">0</span>, <span class="number">6</span>),
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HalfMatch::must(<span class="number">0</span>, <span class="number">9</span>),
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];
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<span class="macro">assert_eq!</span>(expected, got);
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</code></pre></div>
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</div></details><h2 id="variants" class="variants section-header">Variants (Non-exhaustive)<a href="#variants" class="anchor">§</a></h2><details class="toggle non-exhaustive"><summary class="hideme"><span>This enum is marked as non-exhaustive</span></summary><div class="docblock">Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.</div></details><div class="variants"><section id="variant.All" class="variant"><a href="#variant.All" class="anchor">§</a><h3 class="code-header">All</h3></section><div class="docblock"><p>Report all possible matches.</p>
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</div><section id="variant.LeftmostFirst" class="variant"><a href="#variant.LeftmostFirst" class="anchor">§</a><h3 class="code-header">LeftmostFirst</h3></section><div class="docblock"><p>Report only the leftmost matches. When multiple leftmost matches exist,
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report the match corresponding to the part of the regex that appears
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first in the syntax.</p>
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</div></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-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#impl-Clone-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</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/search.rs.html#1697">source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&self) -> <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&Self</a>)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.80.0/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-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#impl-Debug-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</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/search.rs.html#1697">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.80.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1729-1733">source</a><a href="#impl-Default-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</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/search.rs.html#1730-1732">source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -> <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-PartialEq-for-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#impl-PartialEq-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.eq" class="method trait-impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#method.eq" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.PartialEq.html#tymethod.eq" class="fn">eq</a>(&self, other: &<a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used
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by <code>==</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.ne" 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/1.80.0/src/core/cmp.rs.html#263">source</a></span><a href="#method.ne" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.PartialEq.html#method.ne" class="fn">ne</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>This method tests for <code>!=</code>. The default implementation is almost always
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sufficient, and should not be overridden without very good reason.</div></details></div></details><section id="impl-Copy-for-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#impl-Copy-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-Eq-for-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#impl-Eq-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-StructuralPartialEq-for-MatchKind" class="impl"><a class="src rightside" href="../src/regex_automata/util/search.rs.html#1697">source</a><a href="#impl-StructuralPartialEq-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.StructuralPartialEq.html" title="trait core::marker::StructuralPartialEq">StructuralPartialEq</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section></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-Freeze-for-MatchKind" class="impl"><a href="#impl-Freeze-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-RefUnwindSafe-for-MatchKind" class="impl"><a href="#impl-RefUnwindSafe-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-Send-for-MatchKind" class="impl"><a href="#impl-Send-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-Sync-for-MatchKind" class="impl"><a href="#impl-Sync-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-Unpin-for-MatchKind" class="impl"><a href="#impl-Unpin-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</a></h3></section><section id="impl-UnwindSafe-for-MatchKind" class="impl"><a href="#impl-UnwindSafe-for-MatchKind" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="enum" href="enum.MatchKind.html" title="enum regex_automata::MatchKind">MatchKind</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/1.80.0/src/core/any.rs.html#140">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
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T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/src/core/borrow.rs.html#208">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.80.0/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/1.80.0/src/core/borrow.rs.html#216">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.80.0/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/1.80.0/src/core/convert/mod.rs.html#765">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> 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/1.80.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
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</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/1.80.0/src/core/convert/mod.rs.html#748-750">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</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/1.80.0/src/core/convert/mod.rs.html#758">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
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</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/1.80.0/src/alloc/borrow.rs.html#83-85">source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/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/1.80.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.80.0/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/1.80.0/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/1.80.0/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&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/1.80.0/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/1.80.0/src/core/convert/mod.rs.html#805-807">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</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/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/src/core/convert/mod.rs.html#812">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></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/1.80.0/src/core/convert/mod.rs.html#790-792">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</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/1.80.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/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/1.80.0/src/core/convert/mod.rs.html#797">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html> |