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<h1 class='fqn'><span class='in-band'>Macro <a href='index.html'>syn</a>::<wbr><a class="macro" href=''>syn</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../src/syn/parsers.rs.html#1251-1255' title='goto source code'>[src]</a></span></h1>
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<pre class="rust macro">
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<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">syn</span> {
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(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">i</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span>:<span class="ident">ty</span>) <span class="op">=></span> { ... };
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}</pre>
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<div class='docblock'><p>Parse any type that implements the <code>Synom</code> trait.</p>
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<p>Any type implementing <a href="synom/trait.Synom.html"><code>Synom</code></a> can be used with this parser, whether the
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implementation is provided by Syn or is one that you write.</p>
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<ul>
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<li><strong>Syntax:</strong> <code>syn!(TYPE)</code></li>
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<li><strong>Output:</strong> <code>TYPE</code></li>
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</ul>
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<pre class="rust rust-example-rendered">
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<span class="attribute">#[<span class="ident">macro_use</span>]</span>
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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">Ident</span>, <span class="ident">Item</span>};
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<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">token</span>::<span class="ident">Brace</span>;
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<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">synom</span>::<span class="ident">Synom</span>;
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<span class="doccomment">/// Parses a module containing zero or more Rust items.</span>
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<span class="doccomment">///</span>
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<span class="doccomment">/// Example: `mod m { type Result<T> = ::std::result::Result<T, MyError>; }`</span>
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<span class="kw">struct</span> <span class="ident">SimpleMod</span> {
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<span class="ident">mod_token</span>: <span class="macro">Token</span><span class="macro">!</span>[<span class="kw">mod</span>],
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<span class="ident">name</span>: <span class="ident">Ident</span>,
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<span class="ident">brace_token</span>: <span class="ident">Brace</span>,
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<span class="ident">items</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Item</span><span class="op">></span>,
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}
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<span class="kw">impl</span> <span class="ident">Synom</span> <span class="kw">for</span> <span class="ident">SimpleMod</span> {
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<span class="macro">named</span><span class="macro">!</span>(<span class="ident">parse</span> <span class="op">-></span> <span class="self">Self</span>, <span class="macro">do_parse</span><span class="macro">!</span>(
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<span class="ident">mod_token</span>: <span class="macro">keyword</span><span class="macro">!</span>(<span class="kw">mod</span>) <span class="op">>></span>
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<span class="ident">name</span>: <span class="macro">syn</span><span class="macro">!</span>(<span class="ident">Ident</span>) <span class="op">>></span>
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<span class="ident">body</span>: <span class="macro">braces</span><span class="macro">!</span>(<span class="macro">many0</span><span class="macro">!</span>(<span class="macro">syn</span><span class="macro">!</span>(<span class="ident">Item</span>))) <span class="op">>></span>
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(<span class="ident">SimpleMod</span> {
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<span class="ident">mod_token</span>,
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<span class="ident">name</span>,
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<span class="ident">brace_token</span>: <span class="ident">body</span>.<span class="number">0</span>,
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<span class="ident">items</span>: <span class="ident">body</span>.<span class="number">1</span>,
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})
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));
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}</pre>
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<p><em>This macro is available if Syn is built with the <code>"parsing"</code> feature.</em></p>
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