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<p class='location'>Enum Ast</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#variants">Variants</a><div class="sidebar-links"><a href="#variant.Empty">Empty</a><a href="#variant.Flags">Flags</a><a href="#variant.Literal">Literal</a><a href="#variant.Dot">Dot</a><a href="#variant.Assertion">Assertion</a><a href="#variant.Class">Class</a><a href="#variant.Repetition">Repetition</a><a href="#variant.Group">Group</a><a href="#variant.Alternation">Alternation</a><a href="#variant.Concat">Concat</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.span">span</a><a href="#method.is_empty">is_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><a href="#impl-Display">Display</a><a href="#impl-Drop">Drop</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'>ast</a></p><script>window.sidebarCurrent = {name: 'Ast', ty: 'enum', 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'>Enum <a href='../index.html'>regex_syntax</a>::<wbr><a href='index.html'>ast</a>::<wbr><a class="enum" href=''>Ast</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#478-500' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust enum'>pub enum Ast {
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Empty(<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>),
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Flags(<a class="struct" href="../../regex_syntax/ast/struct.SetFlags.html" title="struct regex_syntax::ast::SetFlags">SetFlags</a>),
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Literal(<a class="struct" href="../../regex_syntax/ast/struct.Literal.html" title="struct regex_syntax::ast::Literal">Literal</a>),
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Dot(<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>),
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Assertion(<a class="struct" href="../../regex_syntax/ast/struct.Assertion.html" title="struct regex_syntax::ast::Assertion">Assertion</a>),
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Class(<a class="enum" href="../../regex_syntax/ast/enum.Class.html" title="enum regex_syntax::ast::Class">Class</a>),
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Repetition(<a class="struct" href="../../regex_syntax/ast/struct.Repetition.html" title="struct regex_syntax::ast::Repetition">Repetition</a>),
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Group(<a class="struct" href="../../regex_syntax/ast/struct.Group.html" title="struct regex_syntax::ast::Group">Group</a>),
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Alternation(<a class="struct" href="../../regex_syntax/ast/struct.Alternation.html" title="struct regex_syntax::ast::Alternation">Alternation</a>),
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Concat(<a class="struct" href="../../regex_syntax/ast/struct.Concat.html" title="struct regex_syntax::ast::Concat">Concat</a>),
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}</pre></div><div class='docblock'><p>An abstract syntax tree for a single regular expression.</p>
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<p>An <code>Ast</code>'s <code>fmt::Display</code> implementation uses constant stack space and heap
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space proportional to the size of the <code>Ast</code>.</p>
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<p>This type defines its own destructor that uses constant stack space and
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heap space proportional to the size of the <code>Ast</code>.</p>
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</div><h2 id='variants' class='variants small-section-header'>
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Variants<a href='#variants' class='anchor'></a></h2>
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<span id="variant.Empty" class="variant small-section-header"><a href="#variant.Empty" class="anchor field"></a><span id='Empty.v' class='invisible'><code>Empty(<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>)</code></span></span><div class='docblock'><p>An empty regex that matches everything.</p>
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</div><span id="variant.Flags" class="variant small-section-header"><a href="#variant.Flags" class="anchor field"></a><span id='Flags.v' class='invisible'><code>Flags(<a class="struct" href="../../regex_syntax/ast/struct.SetFlags.html" title="struct regex_syntax::ast::SetFlags">SetFlags</a>)</code></span></span><div class='docblock'><p>A set of flags, e.g., <code>(?is)</code>.</p>
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</div><span id="variant.Literal" class="variant small-section-header"><a href="#variant.Literal" class="anchor field"></a><span id='Literal.v' class='invisible'><code>Literal(<a class="struct" href="../../regex_syntax/ast/struct.Literal.html" title="struct regex_syntax::ast::Literal">Literal</a>)</code></span></span><div class='docblock'><p>A single character literal, which includes escape sequences.</p>
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</div><span id="variant.Dot" class="variant small-section-header"><a href="#variant.Dot" class="anchor field"></a><span id='Dot.v' class='invisible'><code>Dot(<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a>)</code></span></span><div class='docblock'><p>The "any character" class.</p>
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</div><span id="variant.Assertion" class="variant small-section-header"><a href="#variant.Assertion" class="anchor field"></a><span id='Assertion.v' class='invisible'><code>Assertion(<a class="struct" href="../../regex_syntax/ast/struct.Assertion.html" title="struct regex_syntax::ast::Assertion">Assertion</a>)</code></span></span><div class='docblock'><p>A single zero-width assertion.</p>
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</div><span id="variant.Class" class="variant small-section-header"><a href="#variant.Class" class="anchor field"></a><span id='Class.v' class='invisible'><code>Class(<a class="enum" href="../../regex_syntax/ast/enum.Class.html" title="enum regex_syntax::ast::Class">Class</a>)</code></span></span><div class='docblock'><p>A single character class. This includes all forms of character classes
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except for <code>.</code>. e.g., <code>\d</code>, <code>\pN</code>, <code>[a-z]</code> and <code>[[:alpha:]]</code>.</p>
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</div><span id="variant.Repetition" class="variant small-section-header"><a href="#variant.Repetition" class="anchor field"></a><span id='Repetition.v' class='invisible'><code>Repetition(<a class="struct" href="../../regex_syntax/ast/struct.Repetition.html" title="struct regex_syntax::ast::Repetition">Repetition</a>)</code></span></span><div class='docblock'><p>A repetition operator applied to an arbitrary regular expression.</p>
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</div><span id="variant.Group" class="variant small-section-header"><a href="#variant.Group" class="anchor field"></a><span id='Group.v' class='invisible'><code>Group(<a class="struct" href="../../regex_syntax/ast/struct.Group.html" title="struct regex_syntax::ast::Group">Group</a>)</code></span></span><div class='docblock'><p>A grouped regular expression.</p>
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</div><span id="variant.Alternation" class="variant small-section-header"><a href="#variant.Alternation" class="anchor field"></a><span id='Alternation.v' class='invisible'><code>Alternation(<a class="struct" href="../../regex_syntax/ast/struct.Alternation.html" title="struct regex_syntax::ast::Alternation">Alternation</a>)</code></span></span><div class='docblock'><p>An alternation of regular expressions.</p>
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</div><span id="variant.Concat" class="variant small-section-header"><a href="#variant.Concat" class="anchor field"></a><span id='Concat.v' class='invisible'><code>Concat(<a class="struct" href="../../regex_syntax/ast/struct.Concat.html" title="struct regex_syntax::ast::Concat">Concat</a>)</code></span></span><div class='docblock'><p>A concatenation of regular expressions.</p>
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</div>
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<h2 id='methods' class='small-section-header'>
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Methods<a href='#methods' class='anchor'></a>
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</h2>
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<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#502-543' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.span' class="method"><span id='span.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.span' class='fnname'>span</a>(&self) -> &<a class="struct" href="../../regex_syntax/ast/struct.Span.html" title="struct regex_syntax::ast::Span">Span</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#504-517' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return the span of this abstract syntax tree.</p>
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</div><h4 id='method.is_empty' class="method"><span id='is_empty.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.is_empty' class='fnname'>is_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/ast/mod.rs.html#520-525' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Return true if and only if this Ast is empty.</p>
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</div></div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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</h2>
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<div id='implementations-list'>
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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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#477' 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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#477' 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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#477' 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/ast/mod.rs.html#477' 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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#477' 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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#477' 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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#477' 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="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</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/ast/mod.rs.html#477' 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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</div></div><h3 id='impl-Display' 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.Display.html" title="trait core::fmt::Display">Display</a> for <a class="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</a></code><a href='#impl-Display' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#553-558' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='docblock'><p>Print a display representation of this Ast.</p>
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<p>This does not preserve any of the original whitespace formatting that may
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have originally been present in the concrete syntax from which this Ast
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was generated.</p>
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<p>This implementation uses constant stack space and heap space proportional
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to the size of the <code>Ast</code>.</p>
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</div><div class='impl-items'><h4 id='method.fmt-1' class="method"><span id='fmt.v-1' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &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/ast/mod.rs.html#554-557' 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.Display.html#tymethod.fmt">Read more</a></p>
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</div></div><h3 id='impl-Drop' 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/ops/drop/trait.Drop.html" title="trait core::ops::drop::Drop">Drop</a> for <a class="enum" href="../../regex_syntax/ast/enum.Ast.html" title="enum regex_syntax::ast::Ast">Ast</a></code><a href='#impl-Drop' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#1367-1413' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='docblock'><p>A custom <code>Drop</code> impl is used for <code>Ast</code> such that it uses constant stack
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space but heap space proportional to the depth of the <code>Ast</code>.</p>
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</div><div class='impl-items'><h4 id='method.drop' class="method"><span id='drop.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop' class='fnname'>drop</a>(&mut self)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/regex_syntax/ast/mod.rs.html#1368-1412' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Executes the destructor for this type. <a href="https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop">Read more</a></p>
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