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<h1 class='fqn'><span class='in-band'>Macro <a href='index.html'>synom</a>::<wbr><a class="macro" href=''>take_until</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class="rust macro">
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">take_until</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">substr</span>:<span class="ident">expr</span>) <span class="op">=&gt;</span> { ... };
}</pre>
<div class='docblock'><p>Parse the part of the input up to but not including the given string. Fail
to parse if the given string is not present in the input.</p>
<ul>
<li><strong>Syntax:</strong> <code>take_until!(&quot;...&quot;)</code></li>
<li><strong>Output:</strong> <code>&amp;str</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">synom</span>::<span class="ident">IResult</span>;

<span class="comment">// Parse a single line doc comment: /// ...</span>
<span class="macro">named</span><span class="macro">!</span>(<span class="ident">single_line_doc</span> <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="ident">str</span>,
    <span class="macro">preceded</span><span class="macro">!</span>(<span class="macro">punct</span><span class="macro">!</span>(<span class="string">&quot;///&quot;</span>), <span class="macro">take_until</span><span class="macro">!</span>(<span class="string">&quot;\n&quot;</span>))
);

<span class="kw">fn</span> <span class="ident">main</span>() {
    <span class="kw">let</span> <span class="ident">comment</span> <span class="op">=</span> <span class="string">&quot;/// comment\n&quot;</span>;
    <span class="kw">let</span> <span class="ident">parsed</span> <span class="op">=</span> <span class="ident">single_line_doc</span>(<span class="ident">comment</span>).<span class="ident">expect</span>(<span class="string">&quot;single line doc comment&quot;</span>);
    <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parsed</span>, <span class="string">&quot; comment&quot;</span>);
}</pre>
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