| <!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="Error returned when a Syn parser cannot parse the input tokens."><meta name="keywords" content="rust, rustlang, rust-lang, Error"><title>Error in syn - 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" 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class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../syn/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">Error</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.combine">combine</a></li><li><a href="#method.into_compile_error">into_compile_error</a></li><li><a href="#method.new">new</a></li><li><a href="#method.new_spanned">new_spanned</a></li><li><a href="#method.span">span</a></li><li><a href="#method.to_compile_error">to_compile_error</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Clone-for-Error">Clone</a></li><li><a href="#impl-Debug-for-Error">Debug</a></li><li><a href="#impl-Display-for-Error">Display</a></li><li><a href="#impl-Error-for-Error">Error</a></li><li><a href="#impl-Extend%3CError%3E-for-Error">Extend<Error></a></li><li><a href="#impl-From%3CLexError%3E-for-Error">From<LexError></a></li><li><a href="#impl-IntoIterator-for-%26%27a%20Error">IntoIterator</a></li><li><a href="#impl-IntoIterator-for-Error">IntoIterator</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-Error">RefUnwindSafe</a></li><li><a href="#impl-Send-for-Error">Send</a></li><li><a href="#impl-Sync-for-Error">Sync</a></li><li><a href="#impl-Unpin-for-Error">Unpin</a></li><li><a href="#impl-UnwindSafe-for-Error">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-Error">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-Error">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-Error">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-Error">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-Error">Into<U></a></li><li><a href="#impl-Provider-for-Error">Provider</a></li><li><a href="#impl-ToOwned-for-Error">ToOwned</a></li><li><a href="#impl-ToString-for-Error">ToString</a></li><li><a href="#impl-TryFrom%3CU%3E-for-Error">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-Error">TryInto<U></a></li></ul></section><h2><a href="index.html">In syn</a></h2></div></nav><main><div class="width-limiter"><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"><a href="../help.html">?</a></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><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="index.html">syn</a>::<wbr><a class="struct" href="#">Error</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></h1><span class="out-of-band"><a class="srclink" href="../src/syn/error.rs.html#100-102">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct Error { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Error returned when a Syn parser cannot parse the input tokens.</p> |
| <h2 id="error-reporting-in-proc-macros"><a href="#error-reporting-in-proc-macros">Error reporting in proc macros</a></h2> |
| <p>The correct way to report errors back to the compiler from a procedural |
| macro is by emitting an appropriately spanned invocation of |
| <a href="https://doc.rust-lang.org/nightly/core/macro.compile_error.html"><code>compile_error!</code></a> in the generated code. This produces a better diagnostic |
| message than simply panicking the macro.</p> |
| <p>When parsing macro input, the <a href="macro.parse_macro_input.html"><code>parse_macro_input!</code></a> macro handles the |
| conversion to <code>compile_error!</code> automatically.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>proc_macro::TokenStream; |
| <span class="kw">use </span>syn::parse::{Parse, ParseStream, <span class="prelude-ty">Result</span>}; |
| <span class="kw">use </span>syn::{parse_macro_input, ItemFn}; |
| |
| <span class="attribute">#[proc_macro_attribute] |
| </span><span class="kw">pub fn </span>my_attr(args: TokenStream, input: TokenStream) -> TokenStream { |
| <span class="kw">let </span>args = <span class="macro">parse_macro_input!</span>(args <span class="kw">as </span>MyAttrArgs); |
| <span class="kw">let </span>input = <span class="macro">parse_macro_input!</span>(input <span class="kw">as </span>ItemFn); |
| |
| <span class="comment">/* ... */ |
| </span>} |
| |
| <span class="kw">struct </span>MyAttrArgs { |
| ... |
| } |
| |
| <span class="kw">impl </span>Parse <span class="kw">for </span>MyAttrArgs { |
| <span class="kw">fn </span>parse(input: ParseStream) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>> { |
| ... |
| } |
| }</code></pre></div> |
| <p>For errors that arise later than the initial parsing stage, the |
| <a href="parse/struct.Error.html#method.to_compile_error"><code>.to_compile_error()</code></a> or <a href="parse/struct.Error.html#method.into_compile_error"><code>.into_compile_error()</code></a> methods can be used to |
| perform an explicit conversion to <code>compile_error!</code>.</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attribute">#[proc_macro_derive(MyDerive)] |
| </span><span class="kw">pub fn </span>my_derive(input: TokenStream) -> TokenStream { |
| <span class="kw">let </span>input = <span class="macro">parse_macro_input!</span>(input <span class="kw">as </span>DeriveInput); |
| |
| <span class="comment">// fn(DeriveInput) -> syn::Result<proc_macro2::TokenStream> |
| </span>expand::my_derive(input) |
| .unwrap_or_else(syn::Error::into_compile_error) |
| .into() |
| }</code></pre></div> |
| </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-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#127-272">source</a><a href="#impl-Error" class="anchor"></a><h3 class="code-header">impl <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.new" class="method has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#158-172">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fnname">new</a><T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>>(span: <a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a>, message: T) -> Self</h4></section></summary><div class="docblock"><p>Usually the <a href="parse/struct.ParseBuffer.html#method.error"><code>ParseStream::error</code></a> method will be used instead, which |
| automatically uses the correct span from the current position of the |
| parse stream.</p> |
| <p>Use <code>Error::new</code> when the error needs to be triggered on some span other |
| than where the parse stream is currently positioned.</p> |
| <h5 id="example"><a href="#example">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>syn::{Error, Ident, LitStr, <span class="prelude-ty">Result</span>, Token}; |
| <span class="kw">use </span>syn::parse::ParseStream; |
| |
| <span class="comment">// Parses input that looks like `name = "string"` where the key must be |
| // the identifier `name` and the value may be any string literal. |
| // Returns the string literal. |
| </span><span class="kw">fn </span>parse_name(input: ParseStream) -> <span class="prelude-ty">Result</span><LitStr> { |
| <span class="kw">let </span>name_token: Ident = input.parse()<span class="question-mark">?</span>; |
| <span class="kw">if </span>name_token != <span class="string">"name" </span>{ |
| <span class="comment">// Trigger an error not on the current position of the stream, |
| // but on the position of the unexpected identifier. |
| </span><span class="kw">return </span><span class="prelude-val">Err</span>(Error::new(name_token.span(), <span class="string">"expected `name`"</span>)); |
| } |
| input.parse::<<span class="macro">Token!</span>[=]>()<span class="question-mark">?</span>; |
| <span class="kw">let </span>s: LitStr = input.parse()<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(s) |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.new_spanned" class="method has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#188-202">source</a><h4 class="code-header">pub fn <a href="#method.new_spanned" class="fnname">new_spanned</a><T: <a class="trait" href="../quote/to_tokens/trait.ToTokens.html" title="trait quote::to_tokens::ToTokens">ToTokens</a>, U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>>(tokens: T, message: U) -> Self</h4></section></summary><div class="docblock"><p>Creates an error with the specified message spanning the given syntax |
| tree node.</p> |
| <p>Unlike the <code>Error::new</code> constructor, this constructor takes an argument |
| <code>tokens</code> which is a syntax tree node. This allows the resulting <code>Error</code> |
| to attempt to span all tokens inside of <code>tokens</code>. While you would |
| typically be able to use the <code>Spanned</code> trait with the above <code>Error::new</code> |
| constructor, implementation limitations today mean that |
| <code>Error::new_spanned</code> may provide a higher-quality error message on |
| stable Rust.</p> |
| <p>When in doubt it’s recommended to stick to <code>Error::new</code> (or |
| <code>ParseStream::error</code>)!</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.span" class="method has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#209-215">source</a><h4 class="code-header">pub fn <a href="#method.span" class="fnname">span</a>(&self) -> <a class="struct" href="../proc_macro2/struct.Span.html" title="struct proc_macro2::Span">Span</a></h4></section></summary><div class="docblock"><p>The source location of the error.</p> |
| <p>Spans are not thread-safe so this function returns <code>Span::call_site()</code> |
| if called from a different thread than the one on which the <code>Error</code> was |
| originally created.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_compile_error" class="method has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#224-229">source</a><h4 class="code-header">pub fn <a href="#method.to_compile_error" class="fnname">to_compile_error</a>(&self) -> <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a></h4></section></summary><div class="docblock"><p>Render the error as an invocation of <a href="https://doc.rust-lang.org/nightly/core/macro.compile_error.html"><code>compile_error!</code></a>.</p> |
| <p>The <a href="macro.parse_macro_input.html"><code>parse_macro_input!</code></a> macro provides a convenient way to invoke |
| this method correctly in a procedural macro.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into_compile_error" class="method has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#263-265">source</a><h4 class="code-header">pub fn <a href="#method.into_compile_error" class="fnname">into_compile_error</a>(self) -> <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a></h4></section></summary><div class="docblock"><p>Render the error as an invocation of <a href="https://doc.rust-lang.org/nightly/core/macro.compile_error.html"><code>compile_error!</code></a>.</p> |
| <h5 id="example-1"><a href="#example-1">Example</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>proc_macro::TokenStream; |
| <span class="kw">use </span>syn::{parse_macro_input, DeriveInput, Error}; |
| |
| <span class="attribute">#[proc_macro_derive(MyTrait)] |
| </span><span class="kw">pub fn </span>derive_my_trait(input: TokenStream) -> TokenStream { |
| <span class="kw">let </span>input = <span class="macro">parse_macro_input!</span>(input <span class="kw">as </span>DeriveInput); |
| my_trait::expand(input) |
| .unwrap_or_else(Error::into_compile_error) |
| .into() |
| } |
| |
| <span class="kw">mod </span>my_trait { |
| <span class="kw">use </span>proc_macro2::TokenStream; |
| <span class="kw">use </span>syn::{DeriveInput, <span class="prelude-ty">Result</span>}; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>expand(input: DeriveInput) -> <span class="prelude-ty">Result</span><TokenStream> { |
| <span class="comment">/* ... */ |
| </span>} |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.combine" class="method has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#269-271">source</a><h4 class="code-header">pub fn <a href="#method.combine" class="fnname">combine</a>(&mut self, another: <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a>)</h4></section></summary><div class="docblock"><p>Add another error message to self such that when <code>to_compile_error()</code> is |
| called, both errors will be emitted together.</p> |
| </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-Clone-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#377-383">source</a><a href="#impl-Clone-for-Error" class="anchor"></a><h3 class="code-header">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="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#378-382">source</a><a href="#method.clone" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone" class="fnname">clone</a>(&self) -> Self</h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl has-srclink"><span class="rightside"><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#132-134">source</a></span><a href="#method.clone_from" class="anchor"></a><h4 class="code-header">const 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)</h4></section></summary><div class='docblock'>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></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#349-363">source</a><a href="#impl-Debug-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#350-362">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, formatter: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Display-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#371-375">source</a><a href="#impl-Display-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#372-374">source</a><a href="#method.fmt-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt" class="fnname">fmt</a>(&self, formatter: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Error-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#402">source</a><a href="#impl-Error-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.source" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.30.0">1.30.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/error.rs.html#83">source</a></span><a href="#method.source" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.source" class="fnname">source</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&(dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + 'static)></h4></section></summary><div class='docblock'>The lower-level source of this error, if any. <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.source">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.description" class="method trait-impl has-srclink"><span class="rightside"><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/error.rs.html#109">source</a></span><a href="#method.description" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.description" class="fnname">description</a>(&self) -> &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a></h4></section></summary><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 1.42.0: use the Display impl or to_string()</span></div></span><div class='docblock'> <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.description">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.cause" class="method trait-impl has-srclink"><span class="rightside"><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/error.rs.html#119">source</a></span><a href="#method.cause" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.cause" class="fnname">cause</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a>></h4></section></summary><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 1.33.0: replaced by Error::source, which can support downcasting</span></div></span></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.provide" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/error.rs.html#193">source</a><a href="#method.provide" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.provide" class="fnname">provide</a>(&'a self, demand: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.Demand.html" title="struct core::any::Demand">Demand</a><'a>)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>error_generic_member_access</code>)</span></div></span><div class='docblock'>Provides type based access to context intended for error reports. <a href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html#method.provide">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Extend%3CError%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#460-466">source</a><a href="#impl-Extend%3CError%3E-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.Extend.html" title="trait core::iter::traits::collect::Extend">Extend</a><<a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a>> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.extend" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#461-465">source</a><a href="#method.extend" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.Extend.html#tymethod.extend" class="fnname">extend</a><T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a><Item = <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a>>>(&mut self, iter: T)</h4></section></summary><div class='docblock'>Extends a collection with the contents of an iterator. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.Extend.html#tymethod.extend">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.extend_one" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/iter/traits/collect.rs.html#372">source</a><a href="#method.extend_one" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.Extend.html#method.extend_one" class="fnname">extend_one</a>(&mut self, item: A)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>extend_one</code>)</span></div></span><div class='docblock'>Extends a collection with exactly one element.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.extend_reserve" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/iter/traits/collect.rs.html#380">source</a><a href="#method.extend_reserve" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.Extend.html#method.extend_reserve" class="fnname">extend_reserve</a>(&mut self, additional: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>extend_one</code>)</span></div></span><div class='docblock'>Reserves capacity in a collection for the given number of additional elements. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.Extend.html#method.extend_reserve">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-From%3CLexError%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#404-408">source</a><a href="#impl-From%3CLexError%3E-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><<a class="struct" href="../proc_macro2/struct.LexError.html" title="struct proc_macro2::LexError">LexError</a>> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></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"><a class="srclink rightside" href="../src/syn/error.rs.html#405-407">source</a><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(err: <a class="struct" href="../proc_macro2/struct.LexError.html" title="struct proc_macro2::LexError">LexError</a>) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-IntoIterator-for-%26%27a%20Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#435-444">source</a><a href="#impl-IntoIterator-for-%26%27a%20Error" class="anchor"></a><h3 class="code-header">impl<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a> for &'a <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Item-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Item-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h4></section></summary><div class='docblock'>The type of the elements being iterated over.</div></details><details class="rustdoc-toggle" open><summary><section id="associatedtype.IntoIter-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.IntoIter-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.IntoIter" class="associatedtype">IntoIter</a> = Iter<'a></h4></section></summary><div class='docblock'>Which kind of iterator are we turning this into?</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into_iter-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#439-443">source</a><a href="#method.into_iter-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter" class="fnname">into_iter</a>(self) -> Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.IntoIter" title="type core::iter::traits::collect::IntoIterator::IntoIter">IntoIter</a></h4></section></summary><div class='docblock'>Creates an iterator from a value. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-IntoIterator-for-Error" class="impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#410-419">source</a><a href="#impl-IntoIterator-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html" title="trait core::iter::traits::collect::IntoIterator">IntoIterator</a> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Item" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Item" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h4></section></summary><div class='docblock'>The type of the elements being iterated over.</div></details><details class="rustdoc-toggle" open><summary><section id="associatedtype.IntoIter" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.IntoIter" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.IntoIter" class="associatedtype">IntoIter</a> = IntoIter</h4></section></summary><div class='docblock'>Which kind of iterator are we turning this into?</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into_iter" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/syn/error.rs.html#414-418">source</a><a href="#method.into_iter" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter" class="fnname">into_iter</a>(self) -> Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#associatedtype.IntoIter" title="type core::iter::traits::collect::IntoIterator::IntoIter">IntoIter</a></h4></section></summary><div class='docblock'>Creates an iterator from a value. <a href="https://doc.rust-lang.org/nightly/core/iter/traits/collect/trait.IntoIterator.html#tymethod.into_iter">Read more</a></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-Error" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section><section id="impl-Send-for-Error" class="impl has-srclink"><a href="#impl-Send-for-Error" class="anchor"></a><h3 class="code-header">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="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section><section id="impl-Sync-for-Error" class="impl has-srclink"><a href="#impl-Sync-for-Error" class="anchor"></a><h3 class="code-header">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="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section><section id="impl-Unpin-for-Error" class="impl has-srclink"><a href="#impl-Unpin-for-Error" class="anchor"></a><h3 class="code-header">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="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></h3></section><section id="impl-UnwindSafe-for-Error" class="impl has-srclink"><a href="#impl-UnwindSafe-for-Error" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="parse/struct.Error.html" title="struct syn::parse::Error">Error</a></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-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#200">source</a><a href="#impl-Any-for-Error" class="anchor"></a><h3 class="code-header">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></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"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#201">source</a><a href="#method.type_id" class="anchor"></a><h4 class="code-header">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></h4></section></summary><div class='docblock'>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></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#impl-Borrow%3CT%3E-for-Error" class="anchor"></a><h3 class="code-header">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></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/nightly/src/core/borrow.rs.html#213">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">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</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220">source</a><a href="#impl-BorrowMut%3CT%3E-for-Error" class="anchor"></a><h3 class="code-header">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></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/nightly/src/core/borrow.rs.html#221">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">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</h4></section></summary><div class='docblock'>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></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#733">source</a><a href="#impl-From%3CT%3E-for-Error" class="anchor"></a><h3 class="code-header">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</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from-1" 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/nightly/src/core/convert/mod.rs.html#736">source</a></span><a href="#method.from-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/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> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#717">source</a><a href="#impl-Into%3CU%3E-for-Error" class="anchor"></a><h3 class="code-header">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></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/nightly/src/core/convert/mod.rs.html#725">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/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> |
| <p>That is, this conversion is whatever the implementation of |
| <code><a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Provider-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/error.rs.html#197">source</a><a href="#impl-Provider-for-Error" class="anchor"></a><h3 class="code-header">impl<E> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Provider.html" title="trait core::any::Provider">Provider</a> for E<span class="where fmt-newline">where<br> E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/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.provide-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/error.rs.html#201">source</a><a href="#method.provide-1" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Provider.html#tymethod.provide" class="fnname">provide</a>(&'a self, demand: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.Demand.html" title="struct core::any::Demand">Demand</a><'a>)</h4></section></summary><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>provide_any</code>)</span></div></span><div class='docblock'>Data providers should implement this method to provide <em>all</em> values they are able to |
| provide by using <code>demand</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Provider.html#tymethod.provide">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToOwned-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#83">source</a><a href="#impl-ToOwned-for-Error" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Owned" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#88">source</a><a href="#method.to_owned" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fnname">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#92">source</a><a href="#method.clone_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/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)</h4></section></summary><div class='docblock'>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></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToString-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2497">source</a><a href="#impl-ToString-for-Error" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a> for T<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_string" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/string.rs.html#2503">source</a><a href="#method.to_string" class="anchor"></a><h4 class="code-header">default fn <a href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string" class="fnname">to_string</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></summary><div class='docblock'>Converts the given value to a <code>String</code>. <a href="https://doc.rust-lang.org/nightly/alloc/string/trait.ToString.html#tymethod.to_string">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#775">source</a><a href="#impl-TryFrom%3CU%3E-for-Error" class="anchor"></a><h3 class="code-header">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></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/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="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/nightly/src/core/convert/mod.rs.html#781">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">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="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-Error" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#760">source</a><a href="#impl-TryInto%3CU%3E-for-Error" class="anchor"></a><h3 class="code-header">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></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/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">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="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="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/nightly/src/core/convert/mod.rs.html#766">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">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="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="syn" data-themes="ayu,dark,light" 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