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113 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="API documentation for the Rust `Macro` struct in crate `syn`."><meta name="keywords" content="rust, rustlang, rust-lang, Macro"><title>syn::Macro - 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 struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../syn/index.html'><div class='logo-container rust-logo'><img src='../rust-logo.png' alt='logo'></div></a><p class="location">Struct Macro</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.bang_token">bang_token</a><a href="#structfield.delimiter">delimiter</a><a href="#structfield.path">path</a><a href="#structfield.tokens">tokens</a></div><a class="sidebar-title" href="#implementations">Methods</a><div class="sidebar-links"><a href="#method.parse_body">parse_body</a><a href="#method.parse_body_with">parse_body_with</a></div><a class="sidebar-title" href="#trait-implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Clone">Clone</a><a href="#impl-Parse">Parse</a><a href="#impl-ToTokens">ToTokens</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">RefUnwindSafe</a><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-Spanned">Spanned</a><a href="#impl-ToOwned">ToOwned</a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><p class="location"><a href="index.html">syn</a></p><script>window.sidebarCurrent = {name: "Macro", ty: "struct", relpath: ""};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" 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/mac.rs.html#10-22" title="goto source code">[src]</a></span><span class="in-band">Struct <a href="index.html">syn</a>::<wbr><a class="struct" href="">Macro</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust struct">pub struct Macro {
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pub path: <a class="struct" href="../syn/struct.Path.html" title="struct syn::Path">Path</a>,
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pub bang_token: <a class="struct" href="../syn/token/struct.Bang.html" title="struct syn::token::Bang">Bang</a>,
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pub delimiter: <a class="enum" href="../syn/enum.MacroDelimiter.html" title="enum syn::MacroDelimiter">MacroDelimiter</a>,
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pub tokens: <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a>,
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}</pre></div><div class="docblock"><p>A macro invocation: <code>println!("{}", mac)</code>.</p>
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<p><em>This type is available only if Syn is built with the <code>"derive"</code> or <code>"full"</code>
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feature.</em></p>
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</div><h2 id="fields" class="fields small-section-header">
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Fields<a href="#fields" class="anchor"></a></h2><span id="structfield.path" class="structfield small-section-header"><a href="#structfield.path" class="anchor field"></a><code>path: <a class="struct" href="../syn/struct.Path.html" title="struct syn::Path">Path</a></code></span><span id="structfield.bang_token" class="structfield small-section-header"><a href="#structfield.bang_token" class="anchor field"></a><code>bang_token: <a class="struct" href="../syn/token/struct.Bang.html" title="struct syn::token::Bang">Bang</a></code></span><span id="structfield.delimiter" class="structfield small-section-header"><a href="#structfield.delimiter" class="anchor field"></a><code>delimiter: <a class="enum" href="../syn/enum.MacroDelimiter.html" title="enum syn::MacroDelimiter">MacroDelimiter</a></code></span><span id="structfield.tokens" class="structfield small-section-header"><a href="#structfield.tokens" class="anchor field"></a><code>tokens: <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a></code></span><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><h3 id="impl" class="impl"><code class="in-band">impl <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl" class="anchor"></a><a class="srclink" href="../src/syn/mac.rs.html#53-150" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.parse_body" class="method"><code>pub fn <a href="#method.parse_body" class="fnname">parse_body</a><T: <a class="trait" href="../syn/parse/trait.Parse.html" title="trait syn::parse::Parse">Parse</a>>(&self) -> <a class="type" href="../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><T></code><a class="srclink" href="../src/syn/mac.rs.html#138-140" title="goto source code">[src]</a></h4><div class="docblock"><p>Parse the tokens within the macro invocation's delimiters into a syntax
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tree.</p>
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<p>This is equivalent to <code>syn::parse2::<T>(mac.tokens)</code> except that it
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produces a more useful span when <code>tokens</code> is empty.</p>
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<h1 id="example" class="section-header"><a href="#example">Example</a></h1>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">syn</span>::{<span class="ident">parse_quote</span>, <span class="ident">Expr</span>, <span class="ident">ExprLit</span>, <span class="ident">Ident</span>, <span class="ident">Lit</span>, <span class="ident">LitStr</span>, <span class="ident">Macro</span>, <span class="ident">Token</span>};
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<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">ext</span>::<span class="ident">IdentExt</span>;
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<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">parse</span>::{<span class="ident">Error</span>, <span class="ident">Parse</span>, <span class="ident">ParseStream</span>, <span class="prelude-ty">Result</span>};
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<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">punctuated</span>::<span class="ident">Punctuated</span>;
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<span class="comment">// The arguments expected by libcore's format_args macro, and as a</span>
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<span class="comment">// result most other formatting and printing macros like println.</span>
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<span class="comment">//</span>
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<span class="comment">// println!("{} is {number:.prec$}", "x", prec=5, number=0.01)</span>
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<span class="kw">struct</span> <span class="ident">FormatArgs</span> {
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<span class="ident">format_string</span>: <span class="ident">Expr</span>,
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<span class="ident">positional_args</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Expr</span><span class="op">></span>,
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<span class="ident">named_args</span>: <span class="ident">Vec</span><span class="op"><</span>(<span class="ident">Ident</span>, <span class="ident">Expr</span>)<span class="op">></span>,
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}
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<span class="kw">impl</span> <span class="ident">Parse</span> <span class="kw">for</span> <span class="ident">FormatArgs</span> {
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<span class="kw">fn</span> <span class="ident">parse</span>(<span class="ident">input</span>: <span class="ident">ParseStream</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span><span class="op">></span> {
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<span class="kw">let</span> <span class="ident">format_string</span>: <span class="ident">Expr</span>;
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">positional_args</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>();
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">named_args</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>();
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<span class="ident">format_string</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>;
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<span class="kw">while</span> <span class="op">!</span><span class="ident">input</span>.<span class="ident">is_empty</span>() {
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<span class="ident">input</span>.<span class="ident">parse</span>::<span class="op"><</span><span class="macro">Token</span><span class="macro">!</span>[,]<span class="op">></span>()<span class="question-mark">?</span>;
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<span class="kw">if</span> <span class="ident">input</span>.<span class="ident">is_empty</span>() {
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<span class="kw">break</span>;
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}
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<span class="kw">if</span> <span class="ident">input</span>.<span class="ident">peek</span>(<span class="ident">Ident</span>::<span class="ident">peek_any</span>) <span class="op">&&</span> <span class="ident">input</span>.<span class="ident">peek2</span>(<span class="macro">Token</span><span class="macro">!</span>[<span class="op">=</span>]) {
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<span class="kw">while</span> <span class="op">!</span><span class="ident">input</span>.<span class="ident">is_empty</span>() {
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<span class="kw">let</span> <span class="ident">name</span>: <span class="ident">Ident</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">call</span>(<span class="ident">Ident</span>::<span class="ident">parse_any</span>)<span class="question-mark">?</span>;
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<span class="ident">input</span>.<span class="ident">parse</span>::<span class="op"><</span><span class="macro">Token</span><span class="macro">!</span>[<span class="op">=</span>]<span class="op">></span>()<span class="question-mark">?</span>;
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<span class="kw">let</span> <span class="ident">value</span>: <span class="ident">Expr</span> <span class="op">=</span> <span class="ident">input</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>;
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<span class="ident">named_args</span>.<span class="ident">push</span>((<span class="ident">name</span>, <span class="ident">value</span>));
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<span class="kw">if</span> <span class="ident">input</span>.<span class="ident">is_empty</span>() {
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<span class="kw">break</span>;
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}
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<span class="ident">input</span>.<span class="ident">parse</span>::<span class="op"><</span><span class="macro">Token</span><span class="macro">!</span>[,]<span class="op">></span>()<span class="question-mark">?</span>;
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}
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<span class="kw">break</span>;
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}
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<span class="ident">positional_args</span>.<span class="ident">push</span>(<span class="ident">input</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>);
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}
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<span class="prelude-val">Ok</span>(<span class="ident">FormatArgs</span> {
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<span class="ident">format_string</span>,
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<span class="ident">positional_args</span>,
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<span class="ident">named_args</span>,
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})
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}
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}
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<span class="comment">// Extract the first argument, the format string literal, from an</span>
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<span class="comment">// invocation of a formatting or printing macro.</span>
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<span class="kw">fn</span> <span class="ident">get_format_string</span>(<span class="ident">m</span>: <span class="kw-2">&</span><span class="ident">Macro</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">LitStr</span><span class="op">></span> {
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<span class="kw">let</span> <span class="ident">args</span>: <span class="ident">FormatArgs</span> <span class="op">=</span> <span class="ident">m</span>.<span class="ident">parse_body</span>()<span class="question-mark">?</span>;
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<span class="kw">match</span> <span class="ident">args</span>.<span class="ident">format_string</span> {
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<span class="ident">Expr</span>::<span class="ident">Lit</span>(<span class="ident">ExprLit</span> { <span class="ident">lit</span>: <span class="ident">Lit</span>::<span class="ident">Str</span>(<span class="ident">lit</span>), .. }) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">lit</span>),
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<span class="ident">other</span> <span class="op">=</span><span class="op">></span> {
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<span class="comment">// First argument was not a string literal expression.</span>
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<span class="comment">// Maybe something like: println!(concat!(...), ...)</span>
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<span class="prelude-val">Err</span>(<span class="ident">Error</span>::<span class="ident">new_spanned</span>(<span class="ident">other</span>, <span class="string">"format string must be a string literal"</span>))
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}
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}
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}
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="kw">let</span> <span class="ident">invocation</span> <span class="op">=</span> <span class="macro">parse_quote</span><span class="macro">!</span> {
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">Instant</span>::<span class="ident">now</span>())
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};
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<span class="kw">let</span> <span class="ident">lit</span> <span class="op">=</span> <span class="ident">get_format_string</span>(<span class="kw-2">&</span><span class="ident">invocation</span>).<span class="ident">unwrap</span>();
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">lit</span>.<span class="ident">value</span>(), <span class="string">"{:?}"</span>);
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}</pre></div>
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</div><h4 id="method.parse_body_with" class="method"><code>pub fn <a href="#method.parse_body_with" class="fnname">parse_body_with</a><F: <a class="trait" href="../syn/parse/trait.Parser.html" title="trait syn::parse::Parser">Parser</a>>(&self, parser: F) -> <a class="type" href="../syn/parse/type.Result.html" title="type syn::parse::Result">Result</a><F::<a class="type" href="../syn/parse/trait.Parser.html#associatedtype.Output" title="type syn::parse::Parser::Output">Output</a>></code><a class="srclink" href="../src/syn/mac.rs.html#146-149" title="goto source code">[src]</a></h4><div class="docblock"><p>Parse the tokens within the macro invocation's delimiters using the
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given parser.</p>
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</div></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><h3 id="impl-Clone" class="impl"><code class="in-band">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-Clone" class="anchor"></a><a class="srclink" href="../src/syn/gen/clone.rs.html#1359-1368" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.clone" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone" class="fnname">clone</a>(&self) -> Self</code><a class="srclink" href="../src/syn/gen/clone.rs.html#1360-1367" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
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</div><h4 id="method.clone_from" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from" class="fnname">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/clone.rs.html#128-130" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
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</div></div><h3 id="impl-Parse" class="impl"><code class="in-band">impl <a class="trait" href="../syn/parse/trait.Parse.html" title="trait syn::parse::Parse">Parse</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-Parse" class="anchor"></a><a class="srclink" href="../src/syn/mac.rs.html#178-192" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.parse" class="method hidden"><code>fn <a href="../syn/parse/trait.Parse.html#tymethod.parse" class="fnname">parse</a>(input: <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><Self></code><a class="srclink" href="../src/syn/mac.rs.html#179-191" title="goto source code">[src]</a></h4></div><h3 id="impl-ToTokens" class="impl"><code class="in-band">impl <a class="trait" href="../quote/to_tokens/trait.ToTokens.html" title="trait quote::to_tokens::ToTokens">ToTokens</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-ToTokens" class="anchor"></a><a class="srclink" href="../src/syn/mac.rs.html#202-218" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.to_tokens" class="method hidden"><code>fn <a href="../quote/to_tokens/trait.ToTokens.html#tymethod.to_tokens" class="fnname">to_tokens</a>(&self, tokens: &mut <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a>)</code><a class="srclink" href="../src/syn/mac.rs.html#203-217" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Write <code>self</code> to the given <code>TokenStream</code>. <a href="../quote/to_tokens/trait.ToTokens.html#tymethod.to_tokens">Read more</a></p>
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</div><h4 id="method.to_token_stream" class="method hidden"><code>fn <a href="../quote/to_tokens/trait.ToTokens.html#method.to_token_stream" class="fnname">to_token_stream</a>(&self) -> <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a></code><a class="srclink" href="../src/quote/to_tokens.rs.html#61-65" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Convert <code>self</code> directly into a <code>TokenStream</code> object. <a href="../quote/to_tokens/trait.ToTokens.html#method.to_token_stream">Read more</a></p>
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</div><h4 id="method.into_token_stream" class="method hidden"><code>fn <a href="../quote/to_tokens/trait.ToTokens.html#method.into_token_stream" class="fnname">into_token_stream</a>(self) -> <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a></code><a class="srclink" href="../src/quote/to_tokens.rs.html#71-76" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Convert <code>self</code> directly into a <code>TokenStream</code> object. <a href="../quote/to_tokens/trait.ToTokens.html#method.into_token_stream">Read more</a></p>
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</div></div></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><h3 id="impl-RefUnwindSafe" class="impl"><code class="in-band">impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-RefUnwindSafe" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Send" class="impl"><code class="in-band">impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-Send" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Sync" class="impl"><code class="in-band">impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-Sync" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-Unpin" class="impl"><code class="in-band">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-Unpin" class="anchor"></a></h3><div class="impl-items"></div><h3 id="impl-UnwindSafe" class="impl"><code class="in-band">impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../syn/struct.Macro.html" title="struct syn::Macro">Macro</a></code><a href="#impl-UnwindSafe" class="anchor"></a></h3><div class="impl-items"></div></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><h3 id="impl-Any" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Any" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#108-112" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.type_id" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#109-111" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></p>
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</div></div><h3 id="impl-Borrow%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Borrow%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#210-214" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211-213" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
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</div></div><h3 id="impl-BorrowMut%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-BorrowMut%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#217-221" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow_mut" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-220" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
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</div></div><h3 id="impl-From%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</code><a href="#impl-From%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#552-556" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.from" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#553-555" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-Into%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></code><a href="#impl-Into%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#541-548" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#545-547" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-Spanned" class="impl"><code class="in-band">impl<T> <a class="trait" href="../syn/spanned/trait.Spanned.html" title="trait syn::spanned::Spanned">Spanned</a> for T <span class="where fmt-newline">where<br> T: Spanned + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Spanned" class="anchor"></a><a class="srclink" href="../src/syn/spanned.rs.html#110-114" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.span" class="method hidden"><code>pub fn <a href="../syn/spanned/trait.Spanned.html#tymethod.span" class="fnname">span</a>(<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self) -> <a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a></code><a class="srclink" href="../src/syn/spanned.rs.html#111" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Returns a <code>Span</code> covering the complete contents of this syntax tree
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node, or <a href="../proc_macro2/struct.Span.html#method.call_site"><code>Span::call_site()</code></a> if this node is empty. <a href="../syn/spanned/trait.Spanned.html#tymethod.span">Read more</a></p>
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</div></div><h3 id="impl-ToOwned" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, </span></code><a href="#impl-ToOwned" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#80-92" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Owned" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="type">Owned</a> = T</code></h4><div class='docblock'><p>The resulting type after obtaining ownership.</p>
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</div><h4 id="method.to_owned" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fnname">to_owned</a>(&self) -> T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#85-87" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></p>
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</div><h4 id="method.clone_into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fnname">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#89-91" title="goto source code">[src]</a></h4><div class="stability hidden"><div class="stab unstable"><details><summary><span class="emoji">🔬</span> This is a nightly-only experimental API. (<code>toowned_clone_into</code>)</summary><p>recently added</p>
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</details></div></div><div class='docblock hidden'><p>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></p>
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</div></div><h3 id="impl-TryFrom%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></code><a href="#impl-TryFrom%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#589-598" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div><h4 id="method.try_from" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#595-597" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-TryInto%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></code><a href="#impl-TryInto%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#575-584" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error-1" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="type">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div><h4 id="method.try_into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#581-583" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div></div></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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