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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="A type that collects various properties of an HIR value."><title>Properties in regex_syntax::hir - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="regex_syntax" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../regex_syntax/index.html">regex_syntax</a><span class="version">0.8.2</span></h2></div><h2 class="location"><a href="#">Properties</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.explicit_captures_len">explicit_captures_len</a></li><li><a href="#method.is_alternation_literal">is_alternation_literal</a></li><li><a href="#method.is_literal">is_literal</a></li><li><a href="#method.is_utf8">is_utf8</a></li><li><a href="#method.look_set">look_set</a></li><li><a href="#method.look_set_prefix">look_set_prefix</a></li><li><a href="#method.look_set_prefix_any">look_set_prefix_any</a></li><li><a href="#method.look_set_suffix">look_set_suffix</a></li><li><a href="#method.look_set_suffix_any">look_set_suffix_any</a></li><li><a href="#method.maximum_len">maximum_len</a></li><li><a href="#method.memory_usage">memory_usage</a></li><li><a href="#method.minimum_len">minimum_len</a></li><li><a href="#method.static_explicit_captures_len">static_explicit_captures_len</a></li><li><a href="#method.union">union</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-Properties">Clone</a></li><li><a href="#impl-Debug-for-Properties">Debug</a></li><li><a href="#impl-Eq-for-Properties">Eq</a></li><li><a href="#impl-PartialEq-for-Properties">PartialEq</a></li><li><a href="#impl-StructuralEq-for-Properties">StructuralEq</a></li><li><a href="#impl-StructuralPartialEq-for-Properties">StructuralPartialEq</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a hre
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<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../regex_syntax/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Struct <a href="../index.html">regex_syntax</a>::<wbr><a href="index.html">hir</a>::<wbr><a class="struct" href="#">Properties</a><button id="copy-path" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../../src/regex_syntax/hir/mod.rs.html#1952">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub struct Properties(<span class="comment">/* private fields */</span>);</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A type that collects various properties of an HIR value.</p>
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<p>Properties are always scalar values and represent meta data that is
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computed inductively on an HIR value. Properties are defined for all
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HIR values.</p>
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<p>All methods on a <code>Properties</code> value take constant time and are meant to
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be cheap to call.</p>
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</div></details><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1977-2381">source</a><a href="#impl-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.minimum_len" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1988-1990">source</a><h4 class="code-header">pub fn <a href="#method.minimum_len" class="fn">minimum_len</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a>></h4></section></summary><div class="docblock"><p>Returns the length (in bytes) of the smallest string matched by this
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HIR.</p>
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<p>A return value of <code>0</code> is possible and occurs when the HIR can match an
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empty string.</p>
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<p><code>None</code> is returned when there is no minimum length. This occurs in
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precisely the cases where the HIR matches nothing. i.e., The language
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the regex matches is empty. An example of such a regex is <code>\P{any}</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.maximum_len" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2003-2005">source</a><h4 class="code-header">pub fn <a href="#method.maximum_len" class="fn">maximum_len</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a>></h4></section></summary><div class="docblock"><p>Returns the length (in bytes) of the longest string matched by this
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HIR.</p>
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<p>A return value of <code>0</code> is possible and occurs when nothing longer than
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the empty string is in the language described by this HIR.</p>
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<p><code>None</code> is returned when there is no longest matching string. This
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occurs when the HIR matches nothing or when there is no upper bound on
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the length of matching strings. Example of such regexes are <code>\P{any}</code>
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(matches nothing) and <code>a+</code> (has no upper bound).</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.look_set" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2010-2012">source</a><h4 class="code-header">pub fn <a href="#method.look_set" class="fn">look_set</a>(&self) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a set of all look-around assertions that appear at least once
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in this HIR value.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.look_set_prefix" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2021-2023">source</a><h4 class="code-header">pub fn <a href="#method.look_set_prefix" class="fn">look_set_prefix</a>(&self) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a set of all look-around assertions that appear as a prefix for
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this HIR value. That is, the set returned corresponds to the set of
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assertions that must be passed before matching any bytes in a haystack.</p>
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<p>For example, <code>hir.look_set_prefix().contains(Look::Start)</code> returns true
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if and only if the HIR is fully anchored at the start.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.look_set_prefix_any" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2034-2036">source</a><h4 class="code-header">pub fn <a href="#method.look_set_prefix_any" class="fn">look_set_prefix_any</a>(&self) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a set of all look-around assertions that appear as a <em>possible</em>
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prefix for this HIR value. That is, the set returned corresponds to the
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set of assertions that <em>may</em> be passed before matching any bytes in a
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haystack.</p>
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<p>For example, <code>hir.look_set_prefix_any().contains(Look::Start)</code> returns
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true if and only if it’s possible for the regex to match through a
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anchored assertion before consuming any input.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.look_set_suffix" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2046-2048">source</a><h4 class="code-header">pub fn <a href="#method.look_set_suffix" class="fn">look_set_suffix</a>(&self) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a set of all look-around assertions that appear as a suffix for
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this HIR value. That is, the set returned corresponds to the set of
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assertions that must be passed in order to be considered a match after
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all other consuming HIR expressions.</p>
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<p>For example, <code>hir.look_set_suffix().contains(Look::End)</code> returns true
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if and only if the HIR is fully anchored at the end.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.look_set_suffix_any" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2059-2061">source</a><h4 class="code-header">pub fn <a href="#method.look_set_suffix_any" class="fn">look_set_suffix_any</a>(&self) -> <a class="struct" href="struct.LookSet.html" title="struct regex_syntax::hir::LookSet">LookSet</a></h4></section></summary><div class="docblock"><p>Returns a set of all look-around assertions that appear as a <em>possible</em>
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suffix for this HIR value. That is, the set returned corresponds to the
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set of assertions that <em>may</em> be passed before matching any bytes in a
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haystack.</p>
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<p>For example, <code>hir.look_set_suffix_any().contains(Look::End)</code> returns
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true if and only if it’s possible for the regex to match through a
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anchored assertion at the end of a match without consuming any input.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.is_utf8" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2128-2130">source</a><h4 class="code-header">pub fn <a href="#method.is_utf8" class="fn">is_utf8</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Return true if and only if the corresponding HIR will always match
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valid UTF-8.</p>
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<p>When this returns false, then it is possible for this HIR expression to
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match invalid UTF-8, including by matching between the code units of
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a single UTF-8 encoded codepoint.</p>
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<p>Note that this returns true even when the corresponding HIR can match
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the empty string. Since an empty string can technically appear between
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UTF-8 code units, it is possible for a match to be reported that splits
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a codepoint which could in turn be considered matching invalid UTF-8.
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However, it is generally assumed that such empty matches are handled
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specially by the search routine if it is absolutely required that
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matches not split a codepoint.</p>
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<h5 id="example"><a href="#example">Example</a></h5>
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<p>This code example shows the UTF-8 property of a variety of patterns.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_syntax::{ParserBuilder, parse};
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<span class="comment">// Examples of 'is_utf8() == true'.
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</span><span class="macro">assert!</span>(parse(<span class="string">r"a"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"[^a]"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"."</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"\W"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"\b"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"\B"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"(?-u)\b"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(parse(<span class="string">r"(?-u)\B"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="comment">// Unicode mode is enabled by default, and in
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// that mode, all \x hex escapes are treated as
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// codepoints. So this actually matches the UTF-8
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// encoding of U+00FF.
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</span><span class="macro">assert!</span>(parse(<span class="string">r"\xFF"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="comment">// Now we show examples of 'is_utf8() == false'.
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// The only way to do this is to force the parser
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// to permit invalid UTF-8, otherwise all of these
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// would fail to parse!
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</span><span class="kw">let </span>parse = |pattern| {
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ParserBuilder::new().utf8(<span class="bool-val">false</span>).build().parse(pattern)
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};
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<span class="macro">assert!</span>(!parse(<span class="string">r"(?-u)[^a]"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(!parse(<span class="string">r"(?-u)."</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="macro">assert!</span>(!parse(<span class="string">r"(?-u)\W"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="comment">// Conversely to the equivalent example above,
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// when Unicode mode is disabled, \x hex escapes
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// are treated as their raw byte values.
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</span><span class="macro">assert!</span>(!parse(<span class="string">r"(?-u)\xFF"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="comment">// Note that just because we disabled UTF-8 in the
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// parser doesn't mean we still can't use Unicode.
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// It is enabled by default, so \xFF is still
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// equivalent to matching the UTF-8 encoding of
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// U+00FF by default.
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</span><span class="macro">assert!</span>(parse(<span class="string">r"\xFF"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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<span class="comment">// Even though we use raw bytes that individually
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// are not valid UTF-8, when combined together, the
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// overall expression *does* match valid UTF-8!
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</span><span class="macro">assert!</span>(parse(<span class="string">r"(?-u)\xE2\x98\x83"</span>)<span class="question-mark">?</span>.properties().is_utf8());
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</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.explicit_captures_len" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2152-2154">source</a><h4 class="code-header">pub fn <a href="#method.explicit_captures_len" class="fn">explicit_captures_len</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the total number of explicit capturing groups in the
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corresponding HIR.</p>
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<p>Note that this does not include the implicit capturing group
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corresponding to the entire match that is typically included by regex
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engines.</p>
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<h5 id="example-1"><a href="#example-1">Example</a></h5>
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<p>This method will return <code>0</code> for <code>a</code> and <code>1</code> for <code>(a)</code>:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_syntax::parse;
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<span class="macro">assert_eq!</span>(<span class="number">0</span>, parse(<span class="string">"a"</span>)<span class="question-mark">?</span>.properties().explicit_captures_len());
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<span class="macro">assert_eq!</span>(<span class="number">1</span>, parse(<span class="string">"(a)"</span>)<span class="question-mark">?</span>.properties().explicit_captures_len());
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</code></pre></div>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.static_explicit_captures_len" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2192-2194">source</a><h4 class="code-header">pub fn <a href="#method.static_explicit_captures_len" class="fn">static_explicit_captures_len</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a>></h4></section></summary><div class="docblock"><p>Returns the total number of explicit capturing groups that appear in
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every possible match.</p>
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<p>If the number of capture groups can vary depending on the match, then
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this returns <code>None</code>. That is, a value is only returned when the number
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of matching groups is invariant or “static.”</p>
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<p>Note that this does not include the implicit capturing group
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corresponding to the entire match.</p>
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<h5 id="example-2"><a href="#example-2">Example</a></h5>
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<p>This shows a few cases where a static number of capture groups is
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available and a few cases where it is not.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_syntax::parse;
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|||
|
|
<span class="kw">let </span>len = |pattern| {
|
|||
|
|
parse(pattern).map(|h| {
|
|||
|
|
h.properties().static_explicit_captures_len()
|
|||
|
|
})
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>), len(<span class="string">"a"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">"(a)"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">"(a)|(b)"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), len(<span class="string">"(a)(b)|(c)(d)"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">"(a)|b"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">"a|(b)"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, len(<span class="string">"(b)*"</span>)<span class="question-mark">?</span>);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), len(<span class="string">"(b)+"</span>)<span class="question-mark">?</span>);
|
|||
|
|
</code></pre></div>
|
|||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_literal" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2204-2206">source</a><h4 class="code-header">pub fn <a href="#method.is_literal" class="fn">is_literal</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Return true if and only if this HIR is a simple literal. This is
|
|||
|
|
only true when this HIR expression is either itself a <code>Literal</code> or a
|
|||
|
|
concatenation of only <code>Literal</code>s.</p>
|
|||
|
|
<p>For example, <code>f</code> and <code>foo</code> are literals, but <code>f+</code>, <code>(foo)</code>, <code>foo()</code> and
|
|||
|
|
the empty string are not (even though they contain sub-expressions that
|
|||
|
|
are literals).</p>
|
|||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_alternation_literal" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2217-2219">source</a><h4 class="code-header">pub fn <a href="#method.is_alternation_literal" class="fn">is_alternation_literal</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Return true if and only if this HIR is either a simple literal or an
|
|||
|
|
alternation of simple literals. This is only
|
|||
|
|
true when this HIR expression is either itself a <code>Literal</code> or a
|
|||
|
|
concatenation of only <code>Literal</code>s or an alternation of only <code>Literal</code>s.</p>
|
|||
|
|
<p>For example, <code>f</code>, <code>foo</code>, <code>a|b|c</code>, and <code>foo|bar|baz</code> are alternation
|
|||
|
|
literals, but <code>f+</code>, <code>(foo)</code>, <code>foo()</code>, and the empty pattern are not
|
|||
|
|
(even though that contain sub-expressions that are literals).</p>
|
|||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.memory_usage" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2224-2226">source</a><h4 class="code-header">pub fn <a href="#method.memory_usage" class="fn">memory_usage</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the total amount of heap memory usage, in bytes, used by this
|
|||
|
|
<code>Properties</code> value.</p>
|
|||
|
|
</div></details><details class="toggle method-toggle" open><summary><section id="method.union" class="method"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#2298-2380">source</a><h4 class="code-header">pub fn <a href="#method.union" class="fn">union</a><I, P>(props: I) -> <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a><div class="where">where
|
|||
|
|
I: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a><Item = P>,
|
|||
|
|
P: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><<a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a>>,</div></h4></section></summary><div class="docblock"><p>Returns a new set of properties that corresponds to the union of the
|
|||
|
|
iterator of properties given.</p>
|
|||
|
|
<p>This is useful when one has multiple <code>Hir</code> expressions and wants
|
|||
|
|
to combine them into a single alternation without constructing the
|
|||
|
|
corresponding <code>Hir</code>. This routine provides a way of combining the
|
|||
|
|
properties of each <code>Hir</code> expression into one set of properties
|
|||
|
|
representing the union of those expressions.</p>
|
|||
|
|
<h5 id="example-union-with-hirs-that-never-match"><a href="#example-union-with-hirs-that-never-match">Example: union with HIRs that never match</a></h5>
|
|||
|
|
<p>This example shows that unioning properties together with one that
|
|||
|
|
represents a regex that never matches will “poison” certain attributes,
|
|||
|
|
like the minimum and maximum lengths.</p>
|
|||
|
|
|
|||
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_syntax::{hir::Properties, parse};
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>hir1 = parse(<span class="string">"ab?c?"</span>)<span class="question-mark">?</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), hir1.properties().minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">3</span>), hir1.properties().maximum_len());
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>hir2 = parse(<span class="string">r"[a&&b]"</span>)<span class="question-mark">?</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, hir2.properties().minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, hir2.properties().maximum_len());
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>hir3 = parse(<span class="string">r"wxy?z?"</span>)<span class="question-mark">?</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), hir3.properties().minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">4</span>), hir3.properties().maximum_len());
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>unioned = Properties::union([
|
|||
|
|
hir1.properties(),
|
|||
|
|
hir2.properties(),
|
|||
|
|
hir3.properties(),
|
|||
|
|
]);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, unioned.minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, unioned.maximum_len());
|
|||
|
|
</code></pre></div>
|
|||
|
|
<p>The maximum length can also be “poisoned” by a pattern that has no
|
|||
|
|
upper bound on the length of a match. The minimum length remains
|
|||
|
|
unaffected:</p>
|
|||
|
|
|
|||
|
|
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>regex_syntax::{hir::Properties, parse};
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>hir1 = parse(<span class="string">"ab?c?"</span>)<span class="question-mark">?</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), hir1.properties().minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">3</span>), hir1.properties().maximum_len());
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>hir2 = parse(<span class="string">r"a+"</span>)<span class="question-mark">?</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), hir2.properties().minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, hir2.properties().maximum_len());
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>hir3 = parse(<span class="string">r"wxy?z?"</span>)<span class="question-mark">?</span>;
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">2</span>), hir3.properties().minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">4</span>), hir3.properties().maximum_len());
|
|||
|
|
|
|||
|
|
<span class="kw">let </span>unioned = Properties::union([
|
|||
|
|
hir1.properties(),
|
|||
|
|
hir2.properties(),
|
|||
|
|
hir3.properties(),
|
|||
|
|
]);
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="number">1</span>), unioned.minimum_len());
|
|||
|
|
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, unioned.maximum_len());
|
|||
|
|
</code></pre></div>
|
|||
|
|
</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#impl-Clone-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&self) -> <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.76.0/src/core/clone.rs.html#169">source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&Self</a>)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#impl-Debug-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.76.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.76.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.76.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-PartialEq-for-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#impl-PartialEq-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https
|
|||
|
|
by <code>==</code>.</div></details><details class="toggle method-toggle" open><summary><section id="method.ne" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.76.0/src/core/cmp.rs.html#242">source</a></span><a href="#method.ne" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/cmp/trait.PartialEq.html#method.ne" class="fn">ne</a>(&self, other: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&Rhs</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class='docblock'>This method tests for <code>!=</code>. The default implementation is almost always
|
|||
|
|
sufficient, and should not be overridden without very good reason.</div></details></div></details><section id="impl-Eq-for-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#impl-Eq-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section><section id="impl-StructuralEq-for-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#impl-StructuralEq-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.StructuralEq.html" title="trait core::marker::StructuralEq">StructuralEq</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section><section id="impl-StructuralPartialEq-for-Properties" class="impl"><a class="src rightside" href="../../src/regex_syntax/hir/mod.rs.html#1951">source</a><a href="#impl-StructuralPartialEq-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.StructuralPartialEq.html" title="trait core::marker::StructuralPartialEq">StructuralPartialEq</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-Properties" class="impl"><a href="#impl-RefUnwindSafe-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section><section id="impl-Send-for-Properties" class="impl"><a href="#impl-Send-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section><section id="impl-Sync-for-Properties" class="impl"><a href="#impl-Sync-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section><section id="impl-Unpin-for-Properties" class="impl"><a href="#impl-Unpin-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section><section id="impl-UnwindSafe-for-Properties" class="impl"><a href="#impl-UnwindSafe-for-Properties" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.Properties.html" title="struct regex_syntax::hir::Properties">Properties</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><detail
|
|||
|
|
T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/any.rs.html#141">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.76.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.76.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#208">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
|
|||
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#210">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#216">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
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T: ?<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/borrow.rs.html#217">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#763">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#766">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#747-749">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#756">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
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</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToOwned-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/alloc/borrow.rs.html#83-85">source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl"><a href="#associatedtype.Owned" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/alloc/borrow.rs.html#88">source</a><a href="#method.to_owned" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/alloc/borrow.rs.html#92">source</a><a href="#method.clone_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.reference.html">&mut T</a>)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/1.76.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#803-805">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#810">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#788-790">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#795">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html>
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