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<title>regex_syntax::hir::Repetition - Rust</title>
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<p class='location'>Struct Repetition</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.kind">kind</a><a href="#structfield.greedy">greedy</a><a href="#structfield.hir">hir</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.is_match_empty">is_match_empty</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-Eq">Eq</a><a href="#impl-PartialEq">PartialEq</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></div><p class='location'><a href='../index.html'>regex_syntax</a>::<wbr><a href='index.html'>hir</a></p><script>window.sidebarCurrent = {name: 'Repetition', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>regex_syntax</a>::<wbr><a href='index.html'>hir</a>::<wbr><a class="struct" href=''>Repetition</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1187-1200' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct Repetition {
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pub kind: <a class="enum" href="../../regex_syntax/hir/enum.RepetitionKind.html" title="enum regex_syntax::hir::RepetitionKind">RepetitionKind</a>,
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pub greedy: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,
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pub hir: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>>,
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}</pre></div><div class='docblock'><p>The high-level intermediate representation of a repetition operator.</p>
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<p>A repetition operator permits the repetition of an arbitrary
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sub-expression.</p>
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</div><h2 id='fields' class='fields small-section-header'>
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Fields<a href='#fields' class='anchor'></a></h2><span id="structfield.kind" class="structfield small-section-header">
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<a href="#structfield.kind" class="anchor field"></a>
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<code>kind: <a class="enum" href="../../regex_syntax/hir/enum.RepetitionKind.html" title="enum regex_syntax::hir::RepetitionKind">RepetitionKind</a></code>
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</span></span><div class='docblock'><p>The kind of this repetition operator.</p>
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</div><span id="structfield.greedy" class="structfield small-section-header">
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<a href="#structfield.greedy" class="anchor field"></a>
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<code>greedy: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code>
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</span></span><div class='docblock'><p>Whether this repetition operator is greedy or not. A greedy operator
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will match as much as it can. A non-greedy operator will match as
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little as it can.</p>
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<p>Typically, operators are greedy by default and are only non-greedy when
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a <code>?</code> suffix is used, e.g., <code>(expr)*</code> is greedy while <code>(expr)*?</code> is
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not. However, this can be inverted via the <code>U</code> "ungreedy" flag.</p>
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</div><span id="structfield.hir" class="structfield small-section-header">
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<a href="#structfield.hir" class="anchor field"></a>
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<code>hir: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>></code>
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</span></span><div class='docblock'><p>The expression being repeated.</p>
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Methods<a href='#methods' class='anchor'></a>
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<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a></code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1202-1222' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.is_match_empty' class="method"><span id='is_match_empty.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_match_empty' class='fnname'>is_match_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1212-1221' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns true if and only if this repetition operator makes it possible
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to match the empty string.</p>
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<p>Note that this is not defined inductively. For example, while <code>a*</code>
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will report <code>true</code>, <code>()+</code> will not, even though <code>()</code> matches the empty
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string and one or more occurrences of something that matches the empty
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string will always match the empty string. In order to get the
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||
inductive definition, see the corresponding method on
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<a href="struct.Hir.html"><code>Hir</code></a>.</p>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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<h3 id='impl-Clone' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>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="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a></code><a href='#impl-Clone' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><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>
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</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#117-119' title='goto source code'>[src]</a></td></tr></tbody></table></span></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>
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</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>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="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a></code><a href='#impl-Debug' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><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>
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</div></div><h3 id='impl-Eq' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>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="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a></code><a href='#impl-Eq' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'></div><h3 id='impl-PartialEq' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a></code><a href='#impl-PartialEq' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.eq' class="method"><span id='eq.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&self, __arg_0: &<a class="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><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>
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</div><h4 id='method.ne' class="method"><span id='ne.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&self, __arg_0: &<a class="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1186' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>This method tests for <code>!=</code>.</p>
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