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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="API documentation for the Rust `ErrorKind` enum in crate `regex_syntax`."><meta name="keywords" content="rust, rustlang, rust-lang, ErrorKind"><title>regex_syntax::ast::ErrorKind - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc enum"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../regex_syntax/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Enum ErrorKind</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#variants">Variants</a><div class="sidebar-links"><a href="#variant.CaptureLimitExceeded">CaptureLimitExceeded</a><a href="#variant.ClassEscapeInvalid">ClassEscapeInvalid</a><a href="#variant.ClassRangeInvalid">ClassRangeInvalid</a><a href="#variant.ClassRangeLiteral">ClassRangeLiteral</a><a href="#variant.ClassUnclosed">ClassUnclosed</a><a href="#variant.DecimalEmpty">DecimalEmpty</a><a href="#variant.DecimalInvalid">DecimalInvalid</a><a href="#variant.EscapeHexEmpty">EscapeHexEmpty</a><a href="#variant.EscapeHexInvalid">EscapeHexInvalid</a><a href="#variant.EscapeHexInvalidDigit">EscapeHexInvalidDigit</a><a href="#variant.EscapeUnexpectedEof">EscapeUnexpectedEof</a><a href="#variant.EscapeUnrecognized">EscapeUnrecognized</a><a href="#variant.FlagDanglingNegation">FlagDanglingNegation</a><a href="#variant.FlagDuplicate">FlagDuplicate</a><a href="#variant.FlagRepeatedNegation">FlagRepeatedNegation</a><a href="#variant.FlagUnexpectedEof">FlagUnexpectedEof</a><a href="#variant.FlagUnrecognized">FlagUnrecognized</a><a href="#variant.GroupNameDuplicate">GroupNameDuplicate</a><a href="#variant.GroupNameEmpty">GroupNameEmpty</a><a href="#variant.GroupNameInvalid">GroupNameInvalid</a><a href="#variant.GroupNameUnexpectedEof">GroupNameUnexpectedEof</a><a href="#variant.GroupUnclosed">GroupUnclosed</a><a href="#variant.GroupUnopened">GroupUnopened</a><a href="#variant.NestLimitExceeded">NestLimitExceeded</a><a href="#variant.RepetitionCountInvalid">RepetitionCountInvalid</a><a href="#variant.RepetitionCountDecimalEmpty">RepetitionCountDecimalEmpty</a><a href="#variant.RepetitionCountUnclosed">RepetitionCountUnclosed</a><a href="#variant.RepetitionMissing">RepetitionMissing</a><a href="#variant.UnsupportedBackreference">UnsupportedBackreference</a><a href="#variant.UnsupportedLookAround">UnsupportedLookAround</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-Display">Display</a><a href="#impl-Eq">Eq</a><a href="#impl-PartialEq%3CErrorKind%3E">PartialEq&lt;ErrorKind&gt;</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow&lt;T&gt;</a><a href="#impl-BorrowMut%3CT%3E">BorrowMut&lt;T&gt;</a><a href="#impl-From%3CT%3E">From&lt;T&gt;</a><a href="#impl-Into%3CU%3E">Into&lt;U&gt;</a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-ToString">ToString</a><a href="#impl-TryFrom%3CU%3E">TryFrom&lt;U&gt;</a><a href="#impl-TryInto%3CU%3E">TryInto&lt;U&gt;</a></div></div><p class='location'><a href='../index.html'>regex_syntax</a>::<wbr><a href='index.html'>ast</a></p><script>window.sidebarCurrent = {name: 'ErrorKind', ty: 'enum', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#79-186' title='goto source code'>[src]</a></span><span class='in-band'>Enum <a href='../index.html'>regex_syntax</a>::<wbr><a href='index.html'>ast</a>::<wbr><a class="enum" href=''>ErrorKind</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust enum'>pub enum ErrorKind {
CaptureLimitExceeded,
ClassEscapeInvalid,
ClassRangeInvalid,
ClassRangeLiteral,
ClassUnclosed,
DecimalEmpty,
DecimalInvalid,
EscapeHexEmpty,
EscapeHexInvalid,
EscapeHexInvalidDigit,
EscapeUnexpectedEof,
EscapeUnrecognized,
FlagDanglingNegation,
FlagDuplicate {
original: <a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>,
},
FlagRepeatedNegation {
original: <a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>,
},
FlagUnexpectedEof,
FlagUnrecognized,
GroupNameDuplicate {
original: <a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>,
},
GroupNameEmpty,
GroupNameInvalid,
GroupNameUnexpectedEof,
GroupUnclosed,
GroupUnopened,
NestLimitExceeded(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>),
RepetitionCountInvalid,
RepetitionCountDecimalEmpty,
RepetitionCountUnclosed,
RepetitionMissing,
UnsupportedBackreference,
UnsupportedLookAround,
// some variants omitted
}</pre></div><div class='docblock'><p>The type of an error that occurred while building an AST.</p>
</div><h2 id='variants' class='variants small-section-header'>
Variants<a href='#variants' class='anchor'></a></h2>
<span id="variant.CaptureLimitExceeded" class="variant small-section-header"><a href="#variant.CaptureLimitExceeded" class="anchor field"></a><code id='CaptureLimitExceeded.v'>CaptureLimitExceeded</code></span><div class='docblock'><p>The capturing group limit was exceeded.</p>
<p>Note that this represents a limit on the total number of capturing
groups in a regex and not necessarily the number of nested capturing
groups. That is, the nest limit can be low and it is still possible for
this error to occur.</p>
</div><span id="variant.ClassEscapeInvalid" class="variant small-section-header"><a href="#variant.ClassEscapeInvalid" class="anchor field"></a><code id='ClassEscapeInvalid.v'>ClassEscapeInvalid</code></span><div class='docblock'><p>An invalid escape sequence was found in a character class set.</p>
</div><span id="variant.ClassRangeInvalid" class="variant small-section-header"><a href="#variant.ClassRangeInvalid" class="anchor field"></a><code id='ClassRangeInvalid.v'>ClassRangeInvalid</code></span><div class='docblock'><p>An invalid character class range was found. An invalid range is any
range where the start is greater than the end.</p>
</div><span id="variant.ClassRangeLiteral" class="variant small-section-header"><a href="#variant.ClassRangeLiteral" class="anchor field"></a><code id='ClassRangeLiteral.v'>ClassRangeLiteral</code></span><div class='docblock'><p>An invalid range boundary was found in a character class. Range
boundaries must be a single literal codepoint, but this error indicates
that something else was found, such as a nested class.</p>
</div><span id="variant.ClassUnclosed" class="variant small-section-header"><a href="#variant.ClassUnclosed" class="anchor field"></a><code id='ClassUnclosed.v'>ClassUnclosed</code></span><div class='docblock'><p>An opening <code>[</code> was found with no corresponding closing <code>]</code>.</p>
</div><span id="variant.DecimalEmpty" class="variant small-section-header"><a href="#variant.DecimalEmpty" class="anchor field"></a><code id='DecimalEmpty.v'>DecimalEmpty</code></span><div class='docblock'><p>Note that this error variant is no longer used. Namely, a decimal
number can only appear as a repetition quantifier. When the number
in a repetition quantifier is empty, then it gets its own specialized
error, <code>RepetitionCountDecimalEmpty</code>.</p>
</div><span id="variant.DecimalInvalid" class="variant small-section-header"><a href="#variant.DecimalInvalid" class="anchor field"></a><code id='DecimalInvalid.v'>DecimalInvalid</code></span><div class='docblock'><p>An invalid decimal number was given where one was expected.</p>
</div><span id="variant.EscapeHexEmpty" class="variant small-section-header"><a href="#variant.EscapeHexEmpty" class="anchor field"></a><code id='EscapeHexEmpty.v'>EscapeHexEmpty</code></span><div class='docblock'><p>A bracketed hex literal was empty.</p>
</div><span id="variant.EscapeHexInvalid" class="variant small-section-header"><a href="#variant.EscapeHexInvalid" class="anchor field"></a><code id='EscapeHexInvalid.v'>EscapeHexInvalid</code></span><div class='docblock'><p>A bracketed hex literal did not correspond to a Unicode scalar value.</p>
</div><span id="variant.EscapeHexInvalidDigit" class="variant small-section-header"><a href="#variant.EscapeHexInvalidDigit" class="anchor field"></a><code id='EscapeHexInvalidDigit.v'>EscapeHexInvalidDigit</code></span><div class='docblock'><p>An invalid hexadecimal digit was found.</p>
</div><span id="variant.EscapeUnexpectedEof" class="variant small-section-header"><a href="#variant.EscapeUnexpectedEof" class="anchor field"></a><code id='EscapeUnexpectedEof.v'>EscapeUnexpectedEof</code></span><div class='docblock'><p>EOF was found before an escape sequence was completed.</p>
</div><span id="variant.EscapeUnrecognized" class="variant small-section-header"><a href="#variant.EscapeUnrecognized" class="anchor field"></a><code id='EscapeUnrecognized.v'>EscapeUnrecognized</code></span><div class='docblock'><p>An unrecognized escape sequence.</p>
</div><span id="variant.FlagDanglingNegation" class="variant small-section-header"><a href="#variant.FlagDanglingNegation" class="anchor field"></a><code id='FlagDanglingNegation.v'>FlagDanglingNegation</code></span><div class='docblock'><p>A dangling negation was used when setting flags, e.g., <code>i-</code>.</p>
</div><span id="variant.FlagDuplicate" class="variant small-section-header"><a href="#variant.FlagDuplicate" class="anchor field"></a><code id='FlagDuplicate.v'>FlagDuplicate</code></span><div class='docblock'><p>A flag was used twice, e.g., <code>i-i</code>.</p>
</div><span class='autohide sub-variant' id='variant.FlagDuplicate.fields'><h3>Fields of <b>FlagDuplicate</b></h3><div><span id="variant.FlagDuplicate.field.original" class="variant small-section-header"><a href="#variant.FlagDuplicate.field.original" class="anchor field"></a><code id='FlagDuplicate.v.original.v'>original:&nbsp;<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a></code></span><div class='docblock'><p>The position of the original flag. The error position
points to the duplicate flag.</p>
</div></div></span><span id="variant.FlagRepeatedNegation" class="variant small-section-header"><a href="#variant.FlagRepeatedNegation" class="anchor field"></a><code id='FlagRepeatedNegation.v'>FlagRepeatedNegation</code></span><div class='docblock'><p>The negation operator was used twice, e.g., <code>-i-s</code>.</p>
</div><span class='autohide sub-variant' id='variant.FlagRepeatedNegation.fields'><h3>Fields of <b>FlagRepeatedNegation</b></h3><div><span id="variant.FlagRepeatedNegation.field.original" class="variant small-section-header"><a href="#variant.FlagRepeatedNegation.field.original" class="anchor field"></a><code id='FlagRepeatedNegation.v.original.v'>original:&nbsp;<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a></code></span><div class='docblock'><p>The position of the original negation operator. The error position
points to the duplicate negation operator.</p>
</div></div></span><span id="variant.FlagUnexpectedEof" class="variant small-section-header"><a href="#variant.FlagUnexpectedEof" class="anchor field"></a><code id='FlagUnexpectedEof.v'>FlagUnexpectedEof</code></span><div class='docblock'><p>Expected a flag but got EOF, e.g., <code>(?</code>.</p>
</div><span id="variant.FlagUnrecognized" class="variant small-section-header"><a href="#variant.FlagUnrecognized" class="anchor field"></a><code id='FlagUnrecognized.v'>FlagUnrecognized</code></span><div class='docblock'><p>Unrecognized flag, e.g., <code>a</code>.</p>
</div><span id="variant.GroupNameDuplicate" class="variant small-section-header"><a href="#variant.GroupNameDuplicate" class="anchor field"></a><code id='GroupNameDuplicate.v'>GroupNameDuplicate</code></span><div class='docblock'><p>A duplicate capture name was found.</p>
</div><span class='autohide sub-variant' id='variant.GroupNameDuplicate.fields'><h3>Fields of <b>GroupNameDuplicate</b></h3><div><span id="variant.GroupNameDuplicate.field.original" class="variant small-section-header"><a href="#variant.GroupNameDuplicate.field.original" class="anchor field"></a><code id='GroupNameDuplicate.v.original.v'>original:&nbsp;<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a></code></span><div class='docblock'><p>The position of the initial occurrence of the capture name. The
error position itself points to the duplicate occurrence.</p>
</div></div></span><span id="variant.GroupNameEmpty" class="variant small-section-header"><a href="#variant.GroupNameEmpty" class="anchor field"></a><code id='GroupNameEmpty.v'>GroupNameEmpty</code></span><div class='docblock'><p>A capture group name is empty, e.g., <code>(?P&lt;&gt;abc)</code>.</p>
</div><span id="variant.GroupNameInvalid" class="variant small-section-header"><a href="#variant.GroupNameInvalid" class="anchor field"></a><code id='GroupNameInvalid.v'>GroupNameInvalid</code></span><div class='docblock'><p>An invalid character was seen for a capture group name. This includes
errors where the first character is a digit (even though subsequent
characters are allowed to be digits).</p>
</div><span id="variant.GroupNameUnexpectedEof" class="variant small-section-header"><a href="#variant.GroupNameUnexpectedEof" class="anchor field"></a><code id='GroupNameUnexpectedEof.v'>GroupNameUnexpectedEof</code></span><div class='docblock'><p>A closing <code>&gt;</code> could not be found for a capture group name.</p>
</div><span id="variant.GroupUnclosed" class="variant small-section-header"><a href="#variant.GroupUnclosed" class="anchor field"></a><code id='GroupUnclosed.v'>GroupUnclosed</code></span><div class='docblock'><p>An unclosed group, e.g., <code>(ab</code>.</p>
<p>The span of this error corresponds to the unclosed parenthesis.</p>
</div><span id="variant.GroupUnopened" class="variant small-section-header"><a href="#variant.GroupUnopened" class="anchor field"></a><code id='GroupUnopened.v'>GroupUnopened</code></span><div class='docblock'><p>An unopened group, e.g., <code>ab)</code>.</p>
</div><span id="variant.NestLimitExceeded" class="variant small-section-header"><a href="#variant.NestLimitExceeded" class="anchor field"></a><code id='NestLimitExceeded.v'>NestLimitExceeded(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>)</code></span><div class='docblock'><p>The nest limit was exceeded. The limit stored here is the limit
configured in the parser.</p>
</div><span id="variant.RepetitionCountInvalid" class="variant small-section-header"><a href="#variant.RepetitionCountInvalid" class="anchor field"></a><code id='RepetitionCountInvalid.v'>RepetitionCountInvalid</code></span><div class='docblock'><p>The range provided in a counted repetition operator is invalid. The
range is invalid if the start is greater than the end.</p>
</div><span id="variant.RepetitionCountDecimalEmpty" class="variant small-section-header"><a href="#variant.RepetitionCountDecimalEmpty" class="anchor field"></a><code id='RepetitionCountDecimalEmpty.v'>RepetitionCountDecimalEmpty</code></span><div class='docblock'><p>An opening <code>{</code> was not followed by a valid decimal value.
For example, <code>x{}</code> or <code>x{]}</code> would fail.</p>
</div><span id="variant.RepetitionCountUnclosed" class="variant small-section-header"><a href="#variant.RepetitionCountUnclosed" class="anchor field"></a><code id='RepetitionCountUnclosed.v'>RepetitionCountUnclosed</code></span><div class='docblock'><p>An opening <code>{</code> was found with no corresponding closing <code>}</code>.</p>
</div><span id="variant.RepetitionMissing" class="variant small-section-header"><a href="#variant.RepetitionMissing" class="anchor field"></a><code id='RepetitionMissing.v'>RepetitionMissing</code></span><div class='docblock'><p>A repetition operator was applied to a missing sub-expression. This
occurs, for example, in the regex consisting of just a <code>*</code> or even
<code>(?i)*</code>. It is, however, possible to create a repetition operating on
an empty sub-expression. For example, <code>()*</code> is still considered valid.</p>
</div><span id="variant.UnsupportedBackreference" class="variant small-section-header"><a href="#variant.UnsupportedBackreference" class="anchor field"></a><code id='UnsupportedBackreference.v'>UnsupportedBackreference</code></span><div class='docblock'><p>When octal support is disabled, this error is produced when an octal
escape is used. The octal escape is assumed to be an invocation of
a backreference, which is the common case.</p>
</div><span id="variant.UnsupportedLookAround" class="variant small-section-header"><a href="#variant.UnsupportedLookAround" class="anchor field"></a><code id='UnsupportedLookAround.v'>UnsupportedLookAround</code></span><div class='docblock'><p>When syntax similar to PCRE's look-around is used, this error is
returned. Some example syntaxes that are rejected include, but are
not necessarily limited to, <code>(?=re)</code>, <code>(?!re)</code>, <code>(?&lt;=re)</code> and
<code>(?&lt;!re)</code>. Note that all of these syntaxes are otherwise invalid; this
error is used to improve the user experience.</p>
</div><h2 id='implementations' class='small-section-header'>Trait Implementations<a href='#implementations' class='anchor'></a></h2><div id='implementations-list'><h3 id='impl-PartialEq%3CErrorKind%3E' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a>&lt;<a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a>&gt; for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-PartialEq%3CErrorKind%3E' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.eq' class="method hidden"><code id='eq.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&amp;self, other: &amp;<a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
</div><h4 id='method.ne' class="method hidden"><code id='ne.v'>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&amp;self, other: &amp;<a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>!=</code>.</p>
</div></div><h3 id='impl-Clone' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.clone' class="method hidden"><code id='clone.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method"><code id='clone_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>Self)</code><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#131-133' title='goto source code'>[src]</a></h4><div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 id='impl-Eq' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-Eq' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Display' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-Display' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#232-335' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt' class="method hidden"><code id='fmt.v'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#233-334' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.fmt-1' class="method hidden"><code id='fmt.v-1'>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#78' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div></div><h2 id='synthetic-implementations' class='small-section-header'>Auto Trait Implementations<a href='#synthetic-implementations' class='anchor'></a></h2><div id='synthetic-implementations-list'><h3 id='impl-Send' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-Send' class='anchor'></a></h3><div class='impl-items'></div><h3 id='impl-Sync' class='impl'><code class='in-band'>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="enum" href="../../regex_syntax/ast/enum.ErrorKind.html" title="enum regex_syntax::ast::ErrorKind">ErrorKind</a></code><a href='#impl-Sync' class='anchor'></a></h3><div class='impl-items'></div></div><h2 id='blanket-implementations' class='small-section-header'>Blanket Implementations<a href='#blanket-implementations' class='anchor'></a></h2><div id='blanket-implementations-list'><h3 id='impl-From%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</code><a href='#impl-From%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#546-548' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from' class="method hidden"><code id='from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from' class='fnname'>from</a>(t: T) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#547' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-ToOwned' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,&nbsp;</span></code><a href='#impl-ToOwned' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#81-92' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Owned' class="type"><code id='Owned.t'>type <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned' class="type">Owned</a> = T</code></h4><div class='docblock'><p>The resulting type after obtaining ownership.</p>
</div><h4 id='method.to_owned' class="method hidden"><code id='to_owned.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned' class='fnname'>to_owned</a>(&amp;self) -&gt; T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#85-87' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
</div><h4 id='method.clone_into' class="method hidden"><code id='clone_into.v'>fn <a href='https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into' class='fnname'>clone_into</a>(&amp;self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T)</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#89-91' title='goto source code'>[src]</a></h4><div class='stability hidden'><div class='stab unstable'><details><summary><span class='emoji'>🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</summary><p>recently added</p>
</details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
</div></div><h3 id='impl-ToString' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-ToString' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2132-2142' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.to_string' class="method hidden"><code id='to_string.v'>default fn <a href='https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string' class='fnname'>to_string</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2134-2141' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Converts the given value to a <code>String</code>. <a href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></p>
</div></div><h3 id='impl-Into%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-Into%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#537-542' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.into' class="method hidden"><code id='into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into' class='fnname'>into</a>(self) -&gt; U</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#539-541' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryFrom%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryFrom%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#565-571' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error' class="type"><code id='Error.t'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error' class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_from' class="method hidden"><code id='try_from.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from' class='fnname'>try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/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/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#568-570' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-TryInto%3CU%3E' class='impl'><code class='in-band'>impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,&nbsp;</span></code><a href='#impl-TryInto%3CU%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#553-560' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='associatedtype.Error-1' class="type"><code id='Error.t-1'>type <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error' class="type">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4 id='method.try_into' class="method hidden"><code id='try_into.v'>fn <a href='https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into' class='fnname'>try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/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/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/convert.rs.html#557-559' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3 id='impl-BorrowMut%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-BorrowMut%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-220' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow_mut' class="method hidden"><code id='borrow_mut.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut' class='fnname'>borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut </a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Borrow%3CT%3E' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213-215' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.borrow' class="method hidden"><code id='borrow.v'>fn <a href='https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow' class='fnname'>borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;</a>T</code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></div><h3 id='impl-Any' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,&nbsp;</span></code><a href='#impl-Any' class='anchor'></a><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#100-102' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.type_id' class="method hidden"><code id='type_id.v'>fn <a href='https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id' class='fnname'>type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/any.rs.html#101' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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