mentat/docs/apis/rust/combine/combinator/fn.eof.html

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2018-06-21 14:44:35 +00:00
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<div class="sidebar-elems"><p class='location'><a href='../index.html'>combine</a>::<wbr><a href='index.html'>combinator</a></p><script>window.sidebarCurrent = {name: 'eof', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Function <a href='../index.html'>combine</a>::<wbr><a href='index.html'>combinator</a>::<wbr><a class="fn" href=''>eof</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../src/combine/combinator.rs.html#939-944' title='goto source code'>[src]</a></span></h1><pre class='rust fn'>pub fn eof&lt;I&gt;() -&gt; <a class="struct" href="../../combine/combinator/struct.Eof.html" title="struct combine::combinator::Eof">Eof</a>&lt;I&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;I: <a class="trait" href="../../combine/trait.Stream.html" title="trait combine::Stream">Stream</a>,&nbsp;</span></pre><div class='docblock'><p>Succeeds only if the stream is at end of input, fails otherwise.</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">parser</span> <span class="op">=</span> <span class="ident">eof</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parser</span>.<span class="ident">parse</span>(<span class="ident">State</span>::<span class="ident">new</span>(<span class="string">&quot;&quot;</span>)), <span class="prelude-val">Ok</span>(((), <span class="ident">State</span>::<span class="ident">new</span>(<span class="string">&quot;&quot;</span>))));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parser</span>.<span class="ident">parse</span>(<span class="ident">State</span>::<span class="ident">new</span>(<span class="string">&quot;x&quot;</span>)), <span class="prelude-val">Err</span>(<span class="ident">ParseError</span> {
<span class="ident">position</span>: <span class="op">&lt;</span><span class="ident">char</span> <span class="kw">as</span> <span class="ident">Positioner</span><span class="op">&gt;</span>::<span class="ident">start</span>(),
<span class="ident">errors</span>: <span class="macro">vec</span><span class="macro">!</span>[
<span class="ident">Error</span>::<span class="ident">Unexpected</span>(<span class="string">&#39;x&#39;</span>.<span class="ident">into</span>()),
<span class="ident">Error</span>::<span class="ident">Expected</span>(<span class="string">&quot;end of input&quot;</span>.<span class="ident">into</span>())
]
}));</pre>
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