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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 `Hir` struct in crate `regex_syntax`."><meta name="keywords" content="rust, rustlang, rust-lang, Hir"><title>regex_syntax::hir::Hir - 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 struct"><!--[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">☰</div><a href='../../regex_syntax/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><p class='location'>Struct Hir</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.alternation">alternation</a><a href="#method.anchor">anchor</a><a href="#method.any">any</a><a href="#method.class">class</a><a href="#method.concat">concat</a><a href="#method.dot">dot</a><a href="#method.empty">empty</a><a href="#method.group">group</a><a href="#method.into_kind">into_kind</a><a href="#method.is_all_assertions">is_all_assertions</a><a href="#method.is_alternation_literal">is_alternation_literal</a><a href="#method.is_always_utf8">is_always_utf8</a><a href="#method.is_anchored_end">is_anchored_end</a><a href="#method.is_anchored_start">is_anchored_start</a><a href="#method.is_any_anchored_end">is_any_anchored_end</a><a href="#method.is_any_anchored_start">is_any_anchored_start</a><a href="#method.is_line_anchored_end">is_line_anchored_end</a><a href="#method.is_line_anchored_start">is_line_anchored_start</a><a href="#method.is_literal">is_literal</a><a href="#method.is_match_empty">is_match_empty</a><a href="#method.kind">kind</a><a href="#method.literal">literal</a><a href="#method.repetition">repetition</a><a href="#method.word_boundary">word_boundary</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-Drop">Drop</a><a href="#impl-Eq">Eq</a><a href="#impl-PartialEq%3CHir%3E">PartialEq<Hir></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<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-ToString">ToString</a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></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: 'Hir', ty: 'struct', 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
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<p>The HIR of a regular expression represents an intermediate step between its
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abstract syntax (a structured description of the concrete syntax) and
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compiled byte codes. The purpose of HIR is to make regular expressions
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easier to analyze. In particular, the AST is much more complex than the
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HIR. For example, while an AST supports arbitrarily nested character
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classes, the HIR will flatten all nested classes into a single set. The HIR
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will also "compile away" every flag present in the concrete syntax. For
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example, users of HIR expressions never need to worry about case folding;
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it is handled automatically by the translator (e.g., by translating <code>(?i)A</code>
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to <code>[aA]</code>).</p>
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<p>If the HIR was produced by a translator that disallows invalid UTF-8, then
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the HIR is guaranteed to match UTF-8 exclusively.</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 HIR.</p>
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<p>The specific type of an HIR expression can be accessed via its <code>kind</code>
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or <code>into_kind</code> methods. This extra level of indirection exists for two
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reasons:</p>
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<ol>
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<li>Construction of an HIR expression <em>must</em> use the constructor methods
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on this <code>Hir</code> type instead of building the <code>HirKind</code> values directly.
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This permits construction to enforce invariants like "concatenations
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always consist of two or more sub-expressions."</li>
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<li>Every HIR expression contains attributes that are defined inductively,
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and can be computed cheaply during the construction process. For
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example, one such attribute is whether the expression must match at the
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beginning of the text.</li>
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</ol>
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<p>Also, an <code>Hir</code>'s <code>fmt::Display</code> implementation prints an HIR as a regular
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expression pattern string, and uses constant stack space and heap space
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proportional to the size of the <code>Hir</code>.</p>
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</div><h2 id='methods' class='small-section-header'>Methods<a href='#methods' class='anchor'></a></h2><h3 id='impl' class='impl'><code class='in-band'>impl <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#203-711' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.kind' class="method"><code id='kind.v'>pub fn <a href='#method.kind' class='fnname'>kind</a>(&self) -> &<a class="enum" href="../../regex_syntax/hir/enum.HirKind.html" title="enum regex_syntax::hir::HirKind">HirKind</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#205-207' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns a reference to the underlying HIR kind.</p>
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</div><h4 id='method.into_kind' class="method"><code id='into_kind.v'>pub fn <a href='#method.into_kind' class='fnname'>into_kind</a>(self) -> <a class="enum" href="../../regex_syntax/hir/enum.HirKind.html" title="enum regex_syntax::hir::HirKind">HirKind</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#211-214' title='goto source code'>[src]</a></h4><div class='docblock'><p>Consumes ownership of this HIR expression and returns its underlying
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<code>HirKind</code>.</p>
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</div><h4 id='method.empty' class="method"><code id='empty.v'>pub fn <a href='#method.empty' class='fnname'>empty</a>() -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#219-236' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns an empty HIR expression.</p>
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<p>An empty HIR expression always matches, including the empty string.</p>
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</div><h4 id='method.literal' class="method"><code id='literal.v'>pub fn <a href='#method.literal' class='fnname'>literal</a>(lit: <a class="enum" href="../../regex_syntax/hir/enum.Literal.html" title="enum regex_syntax::hir::Literal">Literal</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#243-264' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a literal HIR expression.</p>
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<p>If the given literal has a <code>Byte</code> variant with an ASCII byte, then this
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method panics. This enforces the invariant that <code>Byte</code> variants are
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only used to express matching of invalid UTF-8.</p>
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</div><h4 id='method.class' class="method"><code id='class.v'>pub fn <a href='#method.class' class='fnname'>class</a>(class: <a class="enum" href="../../regex_syntax/hir/enum.Class.html" title="enum regex_syntax::hir::Class">Class</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#267-284' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a class HIR expression.</p>
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</div><h4 id='method.anchor' class="method"><code id='anchor.v'>pub fn <a href='#method.anchor' class='fnname'>anchor</a>(anchor: <a class="enum" href="../../regex_syntax/hir/enum.Anchor.html" title="enum regex_syntax::hir::Anchor">Anchor</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#287-320' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates an anchor assertion HIR expression.</p>
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</div><h4 id='method.word_boundary' class="method"><code id='word_boundary.v'>pub fn <a href='#method.word_boundary' class='fnname'>word_boundary</a>(word_boundary: <a class="enum" href="../../regex_syntax/hir/enum.WordBoundary.html" title="enum regex_syntax::hir::WordBoundary">WordBoundary</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#323-346' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a word boundary assertion HIR expression.</p>
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</div><h4 id='method.repetition' class="method"><code id='repetition.v'>pub fn <a href='#method.repetition' class='fnname'>repetition</a>(rep: <a class="struct" href="../../regex_syntax/hir/struct.Repetition.html" title="struct regex_syntax::hir::Repetition">Repetition</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#349-376' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a repetition HIR expression.</p>
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</div><h4 id='method.group' class="method"><code id='group.v'>pub fn <a href='#method.group' class='fnname'>group</a>(group: <a class="struct" href="../../regex_syntax/hir/struct.Group.html" title="struct regex_syntax::hir::Group">Group</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#379-396' title='goto source code'>[src]</a></h4><div class='docblock'><p>Creates a group HIR expression.</p>
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</div><h4 id='method.concat' class="method"><code id='concat.v'>pub fn <a href='#method.concat' class='fnname'>concat</a>(exprs: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#401-495' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the concatenation of the given expressions.</p>
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<p>This flattens the concatenation as appropriate.</p>
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</div><h4 id='method.alternation' class="method"><code id='alternation.v'>pub fn <a href='#method.alternation' class='fnname'>alternation</a>(exprs: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#500-564' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns the alternation of the given expressions.</p>
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<p>This flattens the alternation as appropriate.</p>
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</div><h4 id='method.dot' class="method"><code id='dot.v'>pub fn <a href='#method.dot' class='fnname'>dot</a>(bytes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#574-586' title='goto source code'>[src]</a></h4><div class='docblock'><p>Build an HIR expression for <code>.</code>.</p>
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<p>A <code>.</code> expression matches any character except for <code>\n</code>. To build an
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expression that matches any character, including <code>\n</code>, use the <code>any</code>
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method.</p>
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<p>If <code>bytes</code> is <code>true</code>, then this assumes characters are limited to a
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single byte.</p>
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</div><h4 id='method.any' class="method"><code id='any.v'>pub fn <a href='#method.any' class='fnname'>any</a>(bytes: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#596-606' title='goto source code'>[src]</a></h4><div class='docblock'><p>Build an HIR expression for <code>(?s).</code>.</p>
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<p>A <code>(?s).</code> expression matches any character, including <code>\n</code>. To build an
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expression that matches any character except for <code>\n</code>, then use the
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<code>dot</code> method.</p>
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<p>If <code>bytes</code> is <code>true</code>, then this assumes characters are limited to a
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single byte.</p>
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</div><h4 id='method.is_always_utf8' class="method"><code id='is_always_utf8.v'>pub fn <a href='#method.is_always_utf8' class='fnname'>is_always_utf8</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#612-614' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR will always match valid UTF-8.</p>
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<p>When this returns false, then it is possible for this HIR expression
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to match invalid UTF-8.</p>
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</div><h4 id='method.is_all_assertions' class="method"><code id='is_all_assertions.v'>pub fn <a href='#method.is_all_assertions' class='fnname'>is_all_assertions</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#621-623' title='goto source code'>[src]</a></h4><div class='docblock'><p>Returns true if and only if this entire HIR expression is made up of
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zero-width assertions.</p>
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<p>This includes expressions like <code>^$\b\A\z</code> and even <code>((\b)+())*^</code>, but
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not <code>^a</code>.</p>
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</div><h4 id='method.is_anchored_start' class="method"><code id='is_anchored_start.v'>pub fn <a href='#method.is_anchored_start' class='fnname'>is_anchored_start</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#628-630' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR is required to match from the
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beginning of text. This includes expressions like <code>^foo</code>, <code>^(foo|bar)</code>,
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<code>^foo|^bar</code> but not <code>^foo|bar</code>.</p>
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</div><h4 id='method.is_anchored_end' class="method"><code id='is_anchored_end.v'>pub fn <a href='#method.is_anchored_end' class='fnname'>is_anchored_end</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#635-637' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR is required to match at the end
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of text. This includes expressions like <code>foo$</code>, <code>(foo|bar)$</code>,
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<code>foo$|bar$</code> but not <code>foo$|bar</code>.</p>
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</div><h4 id='method.is_line_anchored_start' class="method"><code id='is_line_anchored_start.v'>pub fn <a href='#method.is_line_anchored_start' class='fnname'>is_line_anchored_start</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#648-650' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR is required to match from the
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beginning of text or the beginning of a line. This includes expressions
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like <code>^foo</code>, <code>(?m)^foo</code>, <code>^(foo|bar)</code>, <code>^(foo|bar)</code>, <code>(?m)^foo|^bar</code>
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but not <code>^foo|bar</code> or <code>(?m)^foo|bar</code>.</p>
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<p>Note that if <code>is_anchored_start</code> is <code>true</code>, then
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<code>is_line_anchored_start</code> will also be <code>true</code>. The reverse implication
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is not true. For example, <code>(?m)^foo</code> is line anchored, but not
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<code>is_anchored_start</code>.</p>
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</div><h4 id='method.is_line_anchored_end' class="method"><code id='is_line_anchored_end.v'>pub fn <a href='#method.is_line_anchored_end' class='fnname'>is_line_anchored_end</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#661-663' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR is required to match at the
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end of text or the end of a line. This includes expressions like
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<code>foo$</code>, <code>(?m)foo$</code>, <code>(foo|bar)$</code>, <code>(?m)(foo|bar)$</code>, <code>foo$|bar$</code>,
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<code>(?m)(foo|bar)$</code>, but not <code>foo$|bar</code> or <code>(?m)foo$|bar</code>.</p>
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<p>Note that if <code>is_anchored_end</code> is <code>true</code>, then
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<code>is_line_anchored_end</code> will also be <code>true</code>. The reverse implication
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is not true. For example, <code>(?m)foo$</code> is line anchored, but not
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<code>is_anchored_end</code>.</p>
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</div><h4 id='method.is_any_anchored_start' class="method"><code id='is_any_anchored_start.v'>pub fn <a href='#method.is_any_anchored_start' class='fnname'>is_any_anchored_start</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#669-671' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR contains any sub-expression that
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is required to match at the beginning of text. Specifically, this
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returns true if the <code>^</code> symbol (when multiline mode is disabled) or the
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<code>\A</code> escape appear anywhere in the regex.</p>
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</div><h4 id='method.is_any_anchored_end' class="method"><code id='is_any_anchored_end.v'>pub fn <a href='#method.is_any_anchored_end' class='fnname'>is_any_anchored_end</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#677-679' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR contains any sub-expression that is
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required to match at the end of text. Specifically, this returns true
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if the <code>$</code> symbol (when multiline mode is disabled) or the <code>\z</code> escape
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appear anywhere in the regex.</p>
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</div><h4 id='method.is_match_empty' class="method"><code id='is_match_empty.v'>pub fn <a href='#method.is_match_empty' class='fnname'>is_match_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#686-688' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if the empty string is part of the language
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matched by this regular expression.</p>
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<p>This includes <code>a*</code>, <code>a?b*</code>, <code>a{0}</code>, <code>()</code>, <code>()+</code>, <code>^$</code>, <code>a|b?</code>, <code>\B</code>,
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but not <code>a</code>, <code>a+</code> or <code>\b</code>.</p>
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</div><h4 id='method.is_literal' class="method"><code id='is_literal.v'>pub fn <a href='#method.is_literal' class='fnname'>is_literal</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#696-698' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR is a simple literal. This is only
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true when this HIR expression is either itself a <code>Literal</code> or a
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concatenation of only <code>Literal</code>s.</p>
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<p>For example, <code>f</code> and <code>foo</code> are literals, but <code>f+</code>, <code>(foo)</code>, <code>foo()</code>
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are not (even though that contain sub-expressions that are literals).</p>
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</div><h4 id='method.is_alternation_literal' class="method"><code id='is_alternation_literal.v'>pub fn <a href='#method.is_alternation_literal' class='fnname'>is_alternation_literal</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#708-710' title='goto source code'>[src]</a></h4><div class='docblock'><p>Return true if and only if this HIR is either a simple literal or an
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alternation of simple literals. This is only
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true when this HIR expression is either itself a <code>Literal</code> or a
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concatenation of only <code>Literal</code>s or an alternation of only <code>Literal</code>s.</p>
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<p>For example, <code>f</code>, <code>foo</code>, <code>a|b|c</code>, and <code>foo|bar|baz</code> are alternaiton
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literals, but <code>f+</code>, <code>(foo)</code>, <code>foo()</code>
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are not (even though that contain sub-expressions that are literals).</p>
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</div></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%3CHir%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><<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>> for <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl-PartialEq%3CHir%3E' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' 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>(&self, other: &<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' 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>
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</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>(&self, other: &<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' title='goto source code'>[src]</a></h4><div class='docblock hidden'><p>This method tests for <code>!=</code>.</p>
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||
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</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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl-Clone' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' 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>(&self) -> <a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' 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>
|
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</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>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</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>
|
||
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</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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl-Eq' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' title='goto source code'>[src]</a></h3><div class='impl-items'></div><h3 id='impl-Drop' class='impl'><code class='in-band'>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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl-Drop' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1383-1423' title='goto source code'>[src]</a></h3><div class='docblock'><p>A custom <code>Drop</code> impl is used for <code>HirKind</code> such that it uses constant stack
|
||
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space but heap space proportional to the depth of the total <code>Hir</code>.</p>
|
||
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</div><div class='impl-items'><h4 id='method.drop' class="method hidden"><code id='drop.v'>fn <a href='https://doc.rust-lang.org/nightly/core/ops/drop/trait.Drop.html#tymethod.drop' class='fnname'>drop</a>(&mut self)</code><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#1384-1422' title='goto source code'>[src]</a></h4><div class='docblock hidden'><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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</div></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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl-Display' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#749-754' title='goto source code'>[src]</a></h3><div class='docblock'><p>Print a display representation of this Hir.</p>
|
||
|
|
<p>The result of this is a valid regular expression pattern string.</p>
|
||
|
|
<p>This implementation uses constant stack space and heap space proportional
|
||
|
|
to the size of the <code>Hir</code>.</p>
|
||
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</div><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>(&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><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#750-753' 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>
|
||
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</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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a></code><a href='#impl-Debug' class='anchor'></a><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' 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>(&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><a class='srclink' href='../../src/regex_syntax/hir/mod.rs.html#160' 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>
|
||
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</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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</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="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</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<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> 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) -> 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>
|
||
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</div></div><h3 id='impl-ToOwned' class='impl'><code class='in-band'>impl<T> <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> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, </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>
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</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>(&self) -> 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>
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</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>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&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>
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||
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</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>
|
||
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</div></div><h3 id='impl-ToString' class='impl'><code class='in-band'>impl<T> <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> 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>, </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>(&self) -> <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>
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||
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</div></div><h3 id='impl-Into%3CU%3E' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </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) -> 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>
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||
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</div></div><h3 id='impl-TryFrom%3CU%3E' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </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>
|
||
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</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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<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><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>
|
||
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</div></div><h3 id='impl-TryInto%3CU%3E' class='impl'><code class='in-band'>impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </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> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<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>
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||
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</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) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<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><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>
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</div></div><h3 id='impl-BorrowMut%3CT%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </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>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&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>
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</div></div><h3 id='impl-Borrow%3CT%3E' class='impl'><code class='in-band'>impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </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>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</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>
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</div></div><h3 id='impl-Any' class='impl'><code class='in-band'>impl<T> <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> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </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>(&self) -> <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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