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89 lines
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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="Struct containing operators and precedences, which can perform Pratt parsing on primary, prefix, postfix and infix expressions over `Pairs`. The tokens in `Pairs` should alternate in the order: `prefix* ~ primary ~ postfix* ~ (infix ~ prefix* ~ primary ~ postfix*)*`"><meta name="keywords" content="rust, rustlang, rust-lang, PrattParser"><title>PrattParser in pest::pratt_parser - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><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="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" href="https://raw.githubusercontent.com/pest-parser/pest/master/pest-logo.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><a class="sidebar-logo" href="../../pest/index.html"><div class="logo-container"><img src="https://raw.githubusercontent.com/pest-parser/pest/master/pest-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../pest/index.html"><div class="logo-container">
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<img src="https://raw.githubusercontent.com/pest-parser/pest/master/pest-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">PrattParser</a></h2><div class="sidebar-elems"><section><div class="block"><h3 class="sidebar-title"><a href="#implementations">Methods</a></h3><ul><li><a href="#method.map_primary">map_primary</a></li><li><a href="#method.new">new</a></li><li><a href="#method.op">op</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#trait-implementations">Trait Implementations</a></h3><ul><li><a href="#impl-Default-for-PrattParser%3CR%3E">Default</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul><li><a href="#impl-RefUnwindSafe-for-PrattParser%3CR%3E">RefUnwindSafe</a></li><li><a href="#impl-Send-for-PrattParser%3CR%3E">Send</a></li><li><a href="#impl-Sync-for-PrattParser%3CR%3E">Sync</a></li><li><a href="#impl-Unpin-for-PrattParser%3CR%3E">Unpin</a></li><li><a href="#impl-UnwindSafe-for-PrattParser%3CR%3E">UnwindSafe</a></li></ul></div><div class="block"><h3 class="sidebar-title"><a href="#blanket-implementations">Blanket Implementations</a></h3><ul><li><a href="#impl-Any-for-PrattParser%3CR%3E">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-PrattParser%3CR%3E">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-PrattParser%3CR%3E">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-PrattParser%3CR%3E">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-PrattParser%3CR%3E">Into<U></a></li><li><a href="#impl-TryFrom%3CU%3E-for-PrattParser%3CR%3E">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-PrattParser%3CR%3E">TryInto<U></a></li></ul></div></section><h2 class="location"><a href="index.html">In pest::pratt_parser</a></h2></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../pest/index.html">
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<img src="https://raw.githubusercontent.com/pest-parser/pest/master/pest-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Struct <a href="../index.html">pest</a>::<wbr><a href="index.html">pratt_parser</a>::<wbr><a class="struct" href="#">PrattParser</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#195-201">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="docblock item-decl"><pre class="rust struct"><code>pub struct PrattParser<R: <a class="trait" href="../trait.RuleType.html" title="trait pest::RuleType">RuleType</a>> { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Struct containing operators and precedences, which can perform <a href="https://en.wikipedia.org/wiki/Pratt_parser">Pratt parsing</a> on
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primary, prefix, postfix and infix expressions over <a href="../iterators/struct.Pairs.html"><code>Pairs</code></a>. The tokens in <a href="../iterators/struct.Pairs.html"><code>Pairs</code></a>
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should alternate in the order:
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<code>prefix* ~ primary ~ postfix* ~ (infix ~ prefix* ~ primary ~ postfix*)*</code></p>
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<h2 id="panics"><a href="#panics">Panics</a></h2>
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<p>Panics will occur when:</p>
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<ul>
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<li><code>pairs</code> is empty</li>
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<li>The tokens in <code>pairs</code> does not alternate in the expected order.</li>
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<li>No <code>map_*</code> function is specified for a certain kind of operator encountered in <code>pairs</code>.</li>
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</ul>
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<h2 id="example"><a href="#example">Example</a></h2>
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<p>The following pest grammar defines a calculator which can be used for Pratt parsing.</p>
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<div class="example-wrap"><pre class="language-pest"><code>WHITESPACE = _{ " " | "\t" | NEWLINE }
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program = { SOI ~ expr ~ EOI }
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expr = { prefix* ~ primary ~ postfix* ~ (infix ~ prefix* ~ primary ~ postfix* )* }
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infix = _{ add | sub | mul | div | pow }
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add = { "+" } // Addition
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sub = { "-" } // Subtraction
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mul = { "*" } // Multiplication
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div = { "/" } // Division
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pow = { "^" } // Exponentiation
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prefix = _{ neg }
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neg = { "-" } // Negation
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postfix = _{ fac }
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fac = { "!" } // Factorial
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primary = _{ int | "(" ~ expr ~ ")" }
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int = @{ (ASCII_NONZERO_DIGIT ~ ASCII_DIGIT+ | ASCII_DIGIT) }</code></pre></div>
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<p>Below is a <a href="struct.PrattParser.html"><code>PrattParser</code></a> that is able to parse an <code>expr</code> in the above grammar. The order
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of precedence corresponds to the order in which <a href="struct.PrattParserMap.html#method.op"><code>op</code></a> is called. Thus, <code>mul</code> will
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have higher precedence than <code>add</code>. Operators can also be chained with <code>|</code> to give them equal
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precedence.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let</span> <span class="ident">pratt</span> <span class="op">=</span>
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<span class="ident">PrattParser::new</span>()
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.<span class="ident">op</span>(<span class="ident">Op::infix</span>(<span class="ident">Rule::add</span>, <span class="ident">Assoc::Left</span>) <span class="op">|</span> <span class="ident">Op::infix</span>(<span class="ident">Rule::sub</span>, <span class="ident">Assoc::Left</span>))
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.<span class="ident">op</span>(<span class="ident">Op::infix</span>(<span class="ident">Rule::mul</span>, <span class="ident">Assoc::Left</span>) <span class="op">|</span> <span class="ident">Op::infix</span>(<span class="ident">Rule::div</span>, <span class="ident">Assoc::Left</span>))
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.<span class="ident">op</span>(<span class="ident">Op::infix</span>(<span class="ident">Rule::pow</span>, <span class="ident">Assoc::Right</span>))
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.<span class="ident">op</span>(<span class="ident">Op::postfix</span>(<span class="ident">Rule::fac</span>))
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.<span class="ident">op</span>(<span class="ident">Op::prefix</span>(<span class="ident">Rule::neg</span>));</code></pre></div>
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<p>To parse an expression, call the <a href="struct.PrattParser.html#method.map_primary"><code>map_primary</code></a>, <a href="struct.PrattParserMap.html#method.map_prefix"><code>map_prefix</code></a>, <a href="struct.PrattParserMap.html#method.map_postfix"><code>map_postfix</code></a>,
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<a href="struct.PrattParserMap.html#method.map_infix"><code>map_infix</code></a> and <a href="struct.PrattParserMap.html#method.parse"><code>parse</code></a> methods as follows:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">fn</span> <span class="ident">parse_expr</span>(<span class="ident">pairs</span>: <span class="ident">Pairs</span><span class="op"><</span><span class="ident">Rule</span><span class="op">></span>, <span class="ident">pratt</span>: <span class="kw-2">&</span><span class="ident">PrattParser</span><span class="op"><</span><span class="ident">Rule</span><span class="op">></span>) -> <span class="ident">i32</span> {
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<span class="ident">pratt</span>
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.<span class="ident">map_primary</span>(<span class="op">|</span><span class="ident">primary</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">primary</span>.<span class="ident">as_rule</span>() {
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<span class="ident">Rule::int</span> => <span class="ident">primary</span>.<span class="ident">as_str</span>().<span class="ident">parse</span>().<span class="ident">unwrap</span>(),
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<span class="ident">Rule::expr</span> => <span class="ident">parse_expr</span>(<span class="ident">primary</span>.<span class="ident">into_inner</span>(), <span class="ident">pratt</span>), <span class="comment">// from "(" ~ expr ~ ")"</span>
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<span class="kw">_</span> => <span class="macro">unreachable!</span>(),
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})
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.<span class="ident">map_prefix</span>(<span class="op">|</span><span class="ident">op</span>, <span class="ident">rhs</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">op</span>.<span class="ident">as_rule</span>() {
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<span class="ident">Rule::neg</span> => <span class="op">-</span><span class="ident">rhs</span>,
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<span class="kw">_</span> => <span class="macro">unreachable!</span>(),
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})
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.<span class="ident">map_postfix</span>(<span class="op">|</span><span class="ident">lhs</span>, <span class="ident">op</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">op</span>.<span class="ident">as_rule</span>() {
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<span class="ident">Rule::fac</span> => (<span class="number">1</span>..<span class="ident">lhs</span><span class="op">+</span><span class="number">1</span>).<span class="ident">product</span>(),
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<span class="kw">_</span> => <span class="macro">unreachable!</span>(),
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})
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.<span class="ident">map_infix</span>(<span class="op">|</span><span class="ident">lhs</span>, <span class="ident">op</span>, <span class="ident">rhs</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">op</span>.<span class="ident">as_rule</span>() {
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<span class="ident">Rule::add</span> => <span class="ident">lhs</span> <span class="op">+</span> <span class="ident">rhs</span>,
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<span class="ident">Rule::sub</span> => <span class="ident">lhs</span> <span class="op">-</span> <span class="ident">rhs</span>,
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<span class="ident">Rule::mul</span> => <span class="ident">lhs</span> <span class="op">*</span> <span class="ident">rhs</span>,
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<span class="ident">Rule::div</span> => <span class="ident">lhs</span> <span class="op">/</span> <span class="ident">rhs</span>,
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<span class="ident">Rule::pow</span> => (<span class="number">1</span>..<span class="ident">rhs</span><span class="op">+</span><span class="number">1</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">lhs</span>).<span class="ident">product</span>(),
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<span class="kw">_</span> => <span class="macro">unreachable!</span>(),
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})
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.<span class="ident">parse</span>(<span class="ident">pairs</span>)
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}</code></pre></div>
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<p>Note that <a href="struct.PrattParserMap.html#method.map_prefix"><code>map_prefix</code></a>, <a href="struct.PrattParserMap.html#method.map_postfix"><code>map_postfix</code></a> and <a href="struct.PrattParserMap.html#method.map_infix"><code>map_infix</code></a> only need to be specified if the
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grammar contains the corresponding operators.</p>
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</div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#209-255">source</a></span><a href="#impl-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R: <a class="trait" href="../trait.RuleType.html" title="trait pest::RuleType">RuleType</a>> <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.new" class="method has-srclink"><span class="rightside"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#211-219">source</a></span><h4 class="code-header">pub fn <a href="#method.new" class="fnname">new</a>() -> Self</h4></section></summary><div class="docblock"><p>Instantiate a new <code>PrattParser</code>.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.op" class="method has-srclink"><span class="rightside"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#222-235">source</a></span><h4 class="code-header">pub fn <a href="#method.op" class="fnname">op</a>(self, op: <a class="struct" href="struct.Op.html" title="struct pest::pratt_parser::Op">Op</a><R>) -> Self</h4></section></summary><div class="docblock"><p>Add <code>op</code> to <code>PrattParser</code>.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.map_primary" class="method has-srclink"><span class="rightside"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#238-254">source</a></span><h4 class="code-header">pub fn <a href="#method.map_primary" class="fnname">map_primary</a><'pratt, 'i, X, T>(<br> &'pratt self,<br> primary: X<br>) -> <a class="struct" href="struct.PrattParserMap.html" title="struct pest::pratt_parser::PrattParserMap">PrattParserMap</a><'pratt, 'i, R, X, T> <span class="where fmt-newline">where<br> X: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="struct" href="../iterators/struct.Pair.html" title="struct pest::iterators::Pair">Pair</a><'i, R>) -> T,<br> R: 'pratt, </span></h4></section></summary><div class="docblock"><p>Maps primary expressions with a closure <code>primary</code>.</p>
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</div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Default-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#203-207">source</a></span><a href="#impl-Default-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R: <a class="trait" href="../trait.RuleType.html" title="trait pest::RuleType">RuleType</a>> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.default" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="../../src/pest/pratt_parser.rs.html#204-206">source</a></span><a href="#method.default" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/default/trait.Default.html#tymethod.default" class="fnname">default</a>() -> Self</h4></section></summary><div class='docblock'><p>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/1.64.0/core/default/trait.Default.html#tymethod.default">Read more</a></p>
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</div></details></div></details></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"><section id="impl-RefUnwindSafe-for-PrattParser%3CR%3E" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R> <span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>, </span></h3></section><section id="impl-Send-for-PrattParser%3CR%3E" class="impl has-srclink"><a href="#impl-Send-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R> <span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></h3></section><section id="impl-Sync-for-PrattParser%3CR%3E" class="impl has-srclink"><a href="#impl-Sync-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R> <span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>, </span></h3></section><section id="impl-Unpin-for-PrattParser%3CR%3E" class="impl has-srclink"><a href="#impl-Unpin-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R></h3></section><section id="impl-UnwindSafe-for-PrattParser%3CR%3E" class="impl has-srclink"><a href="#impl-UnwindSafe-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<R> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.PrattParser.html" title="struct pest::pratt_parser::PrattParser">PrattParser</a><R> <span class="where fmt-newline">where<br> R: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>, </span></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/any.rs.html#203">source</a></span><a href="#impl-Any-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.64.0/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/1.64.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/any.rs.html#204">source</a></span><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.64.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.64.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/borrow.rs.html#209">source</a></span><a href="#impl-Borrow%3CT%3E-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.64.0/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/1.64.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/borrow.rs.html#211">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.64.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/borrow.rs.html#218">source</a></span><a href="#impl-BorrowMut%3CT%3E-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.64.0/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/1.64.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/borrow.rs.html#219">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.reference.html">&mut </a>T</h4></section></summary><div class='docblock'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.64.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#557">source</a></span><a href="#impl-From%3CT%3E-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#559">source</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/convert/trait.From.html#tymethod.from" class="fnname">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="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#541">source</a></span><a href="#impl-Into%3CU%3E-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.64.0/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/1.64.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#549">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/convert/trait.Into.html#tymethod.into" class="fnname">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/1.64.0/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#598">source</a></span><a href="#impl-TryFrom%3CU%3E-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.64.0/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/1.64.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.64.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#604">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.64.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'><p>Performs the conversion.</p>
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</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-PrattParser%3CR%3E" class="impl has-srclink"><span class="rightside"><a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#583">source</a></span><a href="#impl-TryInto%3CU%3E-for-PrattParser%3CR%3E" class="anchor"></a><h3 class="code-header in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.64.0/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/1.64.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/1.64.0/src/core/convert/mod.rs.html#589">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.64.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.64.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'><p>Performs the conversion.</p>
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