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<h1 class='fqn'><span class='in-band'>Macro <a href='index.html'>synom</a>::<wbr><a class="macro" href=''>delimited</a></span><span class='out-of-band'><span id='render-detail'>
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               </span><a class='srclink' href='../src/synom/lib.rs.html#903-914' title='goto source code'>[src]</a></span></h1>
<pre class="rust macro">
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">delimited</span> {
    (<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">submac</span>:<span class="macro">ident</span><span class="macro">!</span>( $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">args</span>:<span class="ident">tt</span>)<span class="op">*</span> ), $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="op">+</span>) <span class="op">=&gt;</span> { ... };
    (<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">f</span>:<span class="ident">expr</span>, $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">rest</span>:<span class="ident">tt</span>)<span class="op">+</span>) <span class="op">=&gt;</span> { ... };
}</pre>
<div class='docblock'><p>Value surrounded by a pair of delimiters.</p>
<ul>
<li><strong>Syntax:</strong> <code>delimited!(OPEN, THING, CLOSE)</code></li>
<li><strong>Output:</strong> <code>THING</code></li>
</ul>

<pre class="rust rust-example-rendered">
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">syn</span>;
<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">synom</span>;

<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">Expr</span>;
<span class="kw">use</span> <span class="ident">syn</span>::<span class="ident">parse</span>::<span class="ident">expr</span>;

<span class="comment">// An expression surrounded by [[ ... ]].</span>
<span class="macro">named</span><span class="macro">!</span>(<span class="ident">double_bracket_expr</span> <span class="op">-&gt;</span> <span class="ident">Expr</span>,
    <span class="macro">delimited</span><span class="macro">!</span>(<span class="macro">punct</span><span class="macro">!</span>(<span class="string">&quot;[[&quot;</span>), <span class="ident">expr</span>, <span class="macro">punct</span><span class="macro">!</span>(<span class="string">&quot;]]&quot;</span>))
);

<span class="kw">fn</span> <span class="ident">main</span>() {
    <span class="kw">let</span> <span class="ident">input</span> <span class="op">=</span> <span class="string">&quot;[[ 1 + 1 ]]&quot;</span>;

    <span class="kw">let</span> <span class="ident">parsed</span> <span class="op">=</span> <span class="ident">double_bracket_expr</span>(<span class="ident">input</span>).<span class="ident">expect</span>(<span class="string">&quot;double bracket expr&quot;</span>);

    <span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;{:?}&quot;</span>, <span class="ident">parsed</span>);
}</pre>
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