138 lines
6.2 KiB
HTML
138 lines
6.2 KiB
HTML
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<!DOCTYPE html>
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<meta name="description" content="API documentation for the Rust `visit` fn in crate `regex_syntax`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, visit">
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<title>regex_syntax::hir::visit - Rust</title>
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<div class="sidebar-menu">☰</div>
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<div class="sidebar-elems"><p class='location'><a href='../index.html'>regex_syntax</a>::<wbr><a href='index.html'>hir</a></p><script>window.sidebarCurrent = {name: 'visit', 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'>regex_syntax</a>::<wbr><a href='index.html'>hir</a>::<wbr><a class="fn" href=''>visit</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/regex_syntax/hir/visitor.rs.html#69-71' title='goto source code'>[src]</a></span></h1><pre class='rust fn'>pub fn visit<V: <a class="trait" href="../../regex_syntax/hir/trait.Visitor.html" title="trait regex_syntax::hir::Visitor">Visitor</a>>(hir: &<a class="struct" href="../../regex_syntax/hir/struct.Hir.html" title="struct regex_syntax::hir::Hir">Hir</a>, visitor: V) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><V::<a class="type" href="../../regex_syntax/hir/trait.Visitor.html#associatedtype.Output" title="type regex_syntax::hir::Visitor::Output">Output</a>, V::<a class="type" href="../../regex_syntax/hir/trait.Visitor.html#associatedtype.Err" title="type regex_syntax::hir::Visitor::Err">Err</a>></pre><div class='docblock'><p>Executes an implementation of <code>Visitor</code> in constant stack space.</p>
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<p>This function will visit every node in the given <code>Hir</code> while calling
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appropriate methods provided by the
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<a href="trait.Visitor.html"><code>Visitor</code></a> trait.</p>
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<p>The primary use case for this method is when one wants to perform case
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analysis over an <code>Hir</code> without using a stack size proportional to the depth
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of the <code>Hir</code>. Namely, this method will instead use constant stack space,
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but will use heap space proportional to the size of the <code>Hir</code>. This may be
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desirable in cases where the size of <code>Hir</code> is proportional to end user
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input.</p>
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<p>If the visitor returns an error at any point, then visiting is stopped and
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the error is returned.</p>
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</div></section>
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<div class="infos">
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<h2>Search Tricks</h2>
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<code>fn:</code>) to restrict the search to a given type.
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<p>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>struct</code>, <code>enum</code>,
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<code>trait</code>, <code>type</code>, <code>macro</code>,
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and <code>const</code>.
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</p>
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<p>
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Search functions by type signature (e.g.
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<code>vec -> usize</code> or <code>* -> vec</code>)
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</div>
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</div>
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