149 lines
6.8 KiB
HTML
149 lines
6.8 KiB
HTML
|
<!DOCTYPE html>
|
|||
|
|
<html lang="en">
|
|||
|
|
<head>
|
|||
|
|
<meta charset="utf-8">
|
|||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|||
|
|
<meta name="generator" content="rustdoc">
|
|||
|
|
<meta name="description" content="API documentation for the Rust `keyword` macro in crate `synom`.">
|
|||
|
|
<meta name="keywords" content="rust, rustlang, rust-lang, keyword">
|
|||
|
|
|
|||
|
|
<title>synom::keyword - Rust</title>
|
|||
|
|
|
|||
|
|
<link rel="stylesheet" type="text/css" href="../normalize.css">
|
|||
|
|
<link rel="stylesheet" type="text/css" href="../rustdoc.css">
|
|||
|
|
<link rel="stylesheet" type="text/css" href="../main.css">
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</head>
|
|||
|
|
<body class="rustdoc macro">
|
|||
|
|
<!--[if lte IE 8]>
|
|||
|
|
<div class="warning">
|
|||
|
|
This old browser is unsupported and will most likely display funky
|
|||
|
|
things.
|
|||
|
|
</div>
|
|||
|
|
<![endif]-->
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
<nav class="sidebar">
|
|||
|
|
|
|||
|
|
<p class='location'><a href='index.html'>synom</a></p><script>window.sidebarCurrent = {name: 'keyword', ty: 'macro', relpath: ''};</script><script defer src="sidebar-items.js"></script>
|
|||
|
|
</nav>
|
|||
|
|
|
|||
|
|
<nav class="sub">
|
|||
|
|
<form class="search-form js-only">
|
|||
|
|
<div class="search-container">
|
|||
|
|
<input class="search-input" name="search"
|
|||
|
|
autocomplete="off"
|
|||
|
|
placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
|
|||
|
|
type="search">
|
|||
|
|
</div>
|
|||
|
|
</form>
|
|||
|
|
</nav>
|
|||
|
|
|
|||
|
|
<section id='main' class="content">
|
|||
|
|
<h1 class='fqn'><span class='in-band'>Macro <a href='index.html'>synom</a>::<wbr><a class="macro" href=''>keyword</a></span><span class='out-of-band'><span id='render-detail'>
|
|||
|
|
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
|
|||
|
|
[<span class='inner'>−</span>]
|
|||
|
|
</a>
|
|||
|
|
</span><a class='srclink' href='../src/synom/helper.rs.html#78-82' 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">keyword</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">keyword</span>:<span class="ident">expr</span>) <span class="op">=></span> { ... };
|
|||
|
|
}</pre>
|
|||
|
|
<div class='docblock'><p>Parse a keyword like "fn" or "struct".</p>
|
|||
|
|
|
|||
|
|
<p>See also <code>punct!</code> for parsing punctuation, which are subtly different from
|
|||
|
|
keywords.</p>
|
|||
|
|
|
|||
|
|
<ul>
|
|||
|
|
<li><strong>Syntax:</strong> <code>keyword!("...")</code></li>
|
|||
|
|
<li><strong>Output:</strong> <code>&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 zero or more "bang" keywords.</span>
|
|||
|
|
<span class="macro">named</span><span class="macro">!</span>(<span class="ident">many_bangs</span> <span class="op">-></span> <span class="ident">Vec</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">str</span><span class="op">></span>,
|
|||
|
|
<span class="macro">terminated</span><span class="macro">!</span>(
|
|||
|
|
<span class="macro">many0</span><span class="macro">!</span>(<span class="macro">keyword</span><span class="macro">!</span>(<span class="string">"bang"</span>)),
|
|||
|
|
<span class="macro">punct</span><span class="macro">!</span>(<span class="string">";"</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">"bang bang bang;"</span>;
|
|||
|
|
<span class="kw">let</span> <span class="ident">parsed</span> <span class="op">=</span> <span class="ident">many_bangs</span>(<span class="ident">input</span>).<span class="ident">expect</span>(<span class="string">"bangs"</span>);
|
|||
|
|
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">parsed</span>, [<span class="string">"bang"</span>, <span class="string">"bang"</span>, <span class="string">"bang"</span>]);
|
|||
|
|
|
|||
|
|
<span class="kw">let</span> <span class="ident">input</span> <span class="op">=</span> <span class="string">"bangbang;"</span>;
|
|||
|
|
<span class="kw">let</span> <span class="ident">err</span> <span class="op">=</span> <span class="ident">many_bangs</span>(<span class="ident">input</span>);
|
|||
|
|
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">err</span>, <span class="ident">IResult</span>::<span class="ident">Error</span>);
|
|||
|
|
}</pre>
|
|||
|
|
</div></section>
|
|||
|
|
<section id='search' class="content hidden"></section>
|
|||
|
|
|
|||
|
|
<section class="footer"></section>
|
|||
|
|
|
|||
|
|
<aside id="help" class="hidden">
|
|||
|
|
<div>
|
|||
|
|
<h1 class="hidden">Help</h1>
|
|||
|
|
|
|||
|
|
<div class="shortcuts">
|
|||
|
|
<h2>Keyboard Shortcuts</h2>
|
|||
|
|
|
|||
|
|
<dl>
|
|||
|
|
<dt>?</dt>
|
|||
|
|
<dd>Show this help dialog</dd>
|
|||
|
|
<dt>S</dt>
|
|||
|
|
<dd>Focus the search field</dd>
|
|||
|
|
<dt>⇤</dt>
|
|||
|
|
<dd>Move up in search results</dd>
|
|||
|
|
<dt>⇥</dt>
|
|||
|
|
<dd>Move down in search results</dd>
|
|||
|
|
<dt>⏎</dt>
|
|||
|
|
<dd>Go to active search result</dd>
|
|||
|
|
<dt>+</dt>
|
|||
|
|
<dd>Collapse/expand all sections</dd>
|
|||
|
|
</dl>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
<div class="infos">
|
|||
|
|
<h2>Search Tricks</h2>
|
|||
|
|
|
|||
|
|
<p>
|
|||
|
|
Prefix searches with a type followed by a colon (e.g.
|
|||
|
|
<code>fn:</code>) to restrict the search to a given type.
|
|||
|
|
</p>
|
|||
|
|
|
|||
|
|
<p>
|
|||
|
|
Accepted types are: <code>fn</code>, <code>mod</code>,
|
|||
|
|
<code>struct</code>, <code>enum</code>,
|
|||
|
|
<code>trait</code>, <code>type</code>, <code>macro</code>,
|
|||
|
|
and <code>const</code>.
|
|||
|
|
</p>
|
|||
|
|
|
|||
|
|
<p>
|
|||
|
|
Search functions by type signature (e.g.
|
|||
|
|
<code>vec -> usize</code> or <code>* -> vec</code>)
|
|||
|
|
</p>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</aside>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
<script>
|
|||
|
|
window.rootPath = "../";
|
|||
|
|
window.currentCrate = "synom";
|
|||
|
|
</script>
|
|||
|
|
<script src="../main.js"></script>
|
|||
|
|
<script defer src="../search-index.js"></script>
|
|||
|
|
</body>
|
|||
|
|
</html>
|