144 lines
6.5 KiB
HTML
144 lines
6.5 KiB
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<p class='location'><a href='index.html'>syn</a></p><script>window.sidebarCurrent = {name: 'parse_str', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Function <a href='index.html'>syn</a>::<wbr><a class="fn" href=''>parse_str</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../src/syn/lib.rs.html#697-702' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn parse_str<T: <a class="trait" href="../syn/synom/trait.Synom.html" title="trait syn::synom::Synom">Synom</a>>(s: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <a class="struct" href="../syn/synom/struct.ParseError.html" title="struct syn::synom::ParseError">ParseError</a>></pre><div class='docblock'><p>Parse a string of Rust code into the chosen syntax tree node.</p>
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<p><em>This function is available if Syn is built with the <code>"parsing"</code> feature.</em></p>
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<h1 id="hygiene" class="section-header"><a href="#hygiene">Hygiene</a></h1>
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<p>Every span in the resulting syntax tree will be set to resolve at the macro
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call site.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">syn</span>;
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<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">Expr</span>;
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<span class="kw">fn</span> <span class="ident">run</span>() <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
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<span class="kw">let</span> <span class="ident">code</span> <span class="op">=</span> <span class="string">"assert_eq!(u8::max_value(), 255)"</span>;
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<span class="kw">let</span> <span class="ident">expr</span> <span class="op">=</span> <span class="ident">syn</span>::<span class="ident">parse_str</span>::<span class="op"><</span><span class="ident">Expr</span><span class="op">></span>(<span class="ident">code</span>)<span class="question-mark">?</span>;
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<span class="macro">println</span><span class="macro">!</span>(<span class="string">"{:#?}"</span>, <span class="ident">expr</span>);
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<span class="prelude-val">Ok</span>(())
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}</pre>
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