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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `Parser` trait in crate `syn`."><meta name="keywords" content="rust, rustlang, rust-lang, Parser"><title>syn::parse::Parser - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../syn/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a><p class="location">Trait Parser</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#associated-types">Associated Types</a><div class="sidebar-links"><a href="#associatedtype.Output">Output</a></div><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.parse2">parse2</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.parse">parse</a><a href="#method.parse_str">parse_str</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class="location"><a href="../index.html">syn</a>::<wbr><a href="index.html">parse</a></p><script>window.sidebarCurrent = {name: "Parser", ty: "trait", relpath: ""};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><span class="help-button">?</span>
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<a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span><a class="srclink" href="../../src/syn/parse.rs.html#1140-1191" title="goto source code">[src]</a></span><span class="in-band">Trait <a href="../index.html">syn</a>::<wbr><a href="index.html">parse</a>::<wbr><a class="trait" href="">Parser</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust trait">pub trait Parser: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
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type <a href="#associatedtype.Output" class="type">Output</a>;
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fn <a href="#tymethod.parse2" class="fnname">parse2</a>(self, tokens: <a class="struct" href="../../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><Self::<a class="type" href="../../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>>;
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fn <a href="#method.parse" class="fnname">parse</a>(self, tokens: <a class="struct" href="https://doc.rust-lang.org/nightly/proc_macro/struct.TokenStream.html" title="struct proc_macro::TokenStream">TokenStream</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><Self::<a class="type" href="../../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>> { ... }
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<div class="item-spacer"></div> fn <a href="#method.parse_str" class="fnname">parse_str</a>(self, s: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><Self::<a class="type" href="../../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>> { ... }
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}</pre></div><div class="docblock"><p>Parser that can parse Rust tokens into a particular syntax tree node.</p>
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<p>Refer to the <a href="../../syn/parse/index.html">module documentation</a> for details about parsing in Syn.</p>
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<p><em>This trait is available only if Syn is built with the <code>"parsing"</code> feature.</em></p>
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</div><h2 id="associated-types" class="small-section-header">Associated Types<a href="#associated-types" class="anchor"></a></h2><div class="methods"><h3 id="associatedtype.Output" class="method"><code>type <a href="#associatedtype.Output" class="type">Output</a></code></h3></div><span class="loading-content">Loading content...</span><h2 id="required-methods" class="small-section-header">Required methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><h3 id="tymethod.parse2" class="method"><code>fn <a href="#tymethod.parse2" class="fnname">parse2</a>(self, tokens: <a class="struct" href="../../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><Self::<a class="type" href="../../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>></code></h3><div class="docblock"><p>Parse a proc-macro2 token stream into the chosen syntax tree node.</p>
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<p>This function will check that the input is fully parsed. If there are
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any unparsed tokens at the end of the stream, an error is returned.</p>
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</div></div><span class="loading-content">Loading content...</span><h2 id="provided-methods" class="small-section-header">Provided methods<a href="#provided-methods" class="anchor"></a></h2><div class="methods"><h3 id="method.parse" class="method"><code>fn <a href="#method.parse" class="fnname">parse</a>(self, tokens: <a class="struct" href="https://doc.rust-lang.org/nightly/proc_macro/struct.TokenStream.html" title="struct proc_macro::TokenStream">TokenStream</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><Self::<a class="type" href="../../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>></code></h3><div class="docblock"><p>Parse tokens of source code into the chosen syntax tree node.</p>
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<p>This function will check that the input is fully parsed. If there are
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any unparsed tokens at the end of the stream, an error is returned.</p>
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<p><em>This method is available only if Syn is built with both the <code>"parsing"</code> and
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<code>"proc-macro"</code> features.</em></p>
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</div><h3 id="method.parse_str" class="method"><code>fn <a href="#method.parse_str" class="fnname">parse_str</a>(self, s: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><Self::<a class="type" href="../../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>></code></h3><div class="docblock"><p>Parse a string of Rust code into the chosen syntax tree node.</p>
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<p>This function will check that the input is fully parsed. If there are
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any unparsed tokens at the end of the string, an error is returned.</p>
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<h1 id="hygiene" class="section-header"><a href="#hygiene">Hygiene</a></h1>
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<p>Every span in the resulting syntax tree will be set to resolve at the
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macro call site.</p>
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</div></div><span class="loading-content">Loading content...</span><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"><h3 id="impl-Parser" class="impl"><code class="in-band">impl<F, T> Parser for F <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(<a class="type" href="../../syn/parse/type.ParseStream.html" title="type syn::parse::ParseStream">ParseStream</a><'_>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><T>, </span></code><a href="#impl-Parser" class="anchor"></a><a class="srclink" href="../../src/syn/parse.rs.html#1200-1239" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Output-1" class="type"><code>type <a href="#associatedtype.Output-1" class="type">Output</a> = T</code></h4><h4 id="method.parse2" class="method hidden"><code>fn <a href="#method.parse2" class="fnname">parse2</a>(self, tokens: <a class="struct" href="../../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a>) -> <a class="type" href="../../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><T></code><a class="srclink" href="../../src/syn/parse.rs.html#1206-1216" title="goto source code">[src]</a></h4></div></div><span class="loading-content">Loading content...</span><script type="text/javascript" src="../../implementors/syn/parse/trait.Parser.js" async></script></section><section id="search" class="content hidden"></section><section class="footer"></section><script>window.rootPath = "../../";window.currentCrate = "syn";</script><script src="../../main.js"></script><script defer src="../../search-index.js"></script></body></html>
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