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9.4 KiB
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150 lines
9.4 KiB
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<!DOCTYPE html>
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `Replacer` trait in crate `regex`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, Replacer">
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<title>regex::bytes::Replacer - Rust</title>
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This old browser is unsupported and will most likely display funky
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<a href='../../regex/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a>
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<p class='location'>Trait Replacer</p><div class="block items"><ul><li><a href="#required-methods">Required Methods</a></li><li><a href="#provided-methods">Provided Methods</a></li><li><a href="#implementors">Implementors</a></li></ul></div><p class='location'><a href='../index.html'>regex</a>::<wbr><a href='index.html'>bytes</a></p><script>window.sidebarCurrent = {name: 'Replacer', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>regex</a>::<wbr><a href='index.html'>bytes</a>::<wbr><a class="trait" href=''>Replacer</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/re_bytes.rs.html#942-962' title='goto source code'>[src]</a></span></h1>
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<pre class='rust trait'>pub trait Replacer {
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fn <a href='#tymethod.replace_append' class='fnname'>replace_append</a>(&mut self, caps: &<a class="struct" href="../../regex/bytes/struct.Captures.html" title="struct regex::bytes::Captures">Captures</a>, dst: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>>);
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fn <a href='#method.no_expansion' class='fnname'>no_expansion</a><'r>(&'r mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="https://doc.rust-lang.org/nightly/alloc/borrow/enum.Cow.html" title="enum alloc::borrow::Cow">Cow</a><'r, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>>> { ... }
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}</pre><div class='docblock'><p>Replacer describes types that can be used to replace matches in a byte
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string.</p>
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<p>In general, users of this crate shouldn't need to implement this trait,
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since implementations are already provided for <code>&[u8]</code> and
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<code>FnMut(&Captures) -> Vec<u8></code>, which covers most use cases.</p>
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</div>
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<h2 id='required-methods'>Required Methods</h2>
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<div class='methods'>
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<h3 id='tymethod.replace_append' class='method'><span id='replace_append.v' class='invisible'><code>fn <a href='#tymethod.replace_append' class='fnname'>replace_append</a>(&mut self, caps: &<a class="struct" href="../../regex/bytes/struct.Captures.html" title="struct regex::bytes::Captures">Captures</a>, dst: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>>)</code></span></h3><div class='docblock'><p>Appends text to <code>dst</code> to replace the current match.</p>
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<p>The current match is represented by <code>caps</code>, which is guaranteed to
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have a match at capture group <code>0</code>.</p>
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<p>For example, a no-op replacement would be
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<code>dst.extend(caps.at(0).unwrap())</code>.</p>
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</div></div>
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<h2 id='provided-methods'>Provided Methods</h2>
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<div class='methods'>
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<h3 id='method.no_expansion' class='method'><span id='no_expansion.v' class='invisible'><code>fn <a href='#method.no_expansion' class='fnname'>no_expansion</a><'r>(&'r mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="https://doc.rust-lang.org/nightly/alloc/borrow/enum.Cow.html" title="enum alloc::borrow::Cow">Cow</a><'r, <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>>></code></span></h3><div class='docblock'><p>Return a fixed unchanging replacement byte string.</p>
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<p>When doing replacements, if access to <code>Captures</code> is not needed (e.g.,
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the replacement byte string does not need <code>$</code> expansion), then it can
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be beneficial to avoid finding sub-captures.</p>
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<p>In general, this is called once for every call to <code>replacen</code>.</p>
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</div></div>
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<h2 id='implementors'>Implementors</h2>
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<ul class='item-list' id='implementors-list'>
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<li><code>impl<'a> Replacer for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&'a [</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a></code></li>
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<li><code>impl<F> Replacer for F <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(&<a class="struct" href="../../regex/bytes/struct.Captures.html" title="struct regex::bytes::Captures">Captures</a>) -> <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>>, </span></code></li>
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<li><code>impl<'a> Replacer for <a class="struct" href="../../regex/bytes/struct.NoExpand.html" title="struct regex::bytes::NoExpand">NoExpand</a><'a></code></li>
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</ul><script type="text/javascript" async
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src="../../implementors/regex/bytes/trait.Replacer.js">
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</script></section>
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<h1 class="hidden">Help</h1>
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<h2>Keyboard Shortcuts</h2>
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<dl>
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<dd>Show this help dialog</dd>
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Prefix searches with a type followed by a colon (e.g.
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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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