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<!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="Source of the Rust file `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/unicode-normalization-0.1.21/src/replace.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>replace.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../dark.css" disabled><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" href="https://unicode-rs.github.io/unicode-rs_sm.png"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../unicode_normalization/index.html"><div class="logo-container"><img src="https://unicode-rs.github.io/unicode-rs_sm.png" alt="logo"></div>
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</pre><pre class="rust"><code><span class="comment">// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="kw">use</span> <span class="ident">core::fmt</span>::{<span class="self">self</span>, <span class="ident">Write</span>};
<span class="kw">use</span> <span class="ident">tinyvec::ArrayVec</span>;
<span class="doccomment">/// External iterator for replacements for a string's characters.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">iter</span>: <span class="ident">I</span>,
<span class="comment">// At this time, the longest replacement sequence has length 2, so we just</span>
<span class="comment">// need buffer space for 1 codepoint.</span>
<span class="ident">buffer</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>,
}
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new_cjk_compat_variants</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span><span class="op">></span>(<span class="ident">iter</span>: <span class="ident">I</span>) -> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="ident">Replacements</span> { <span class="ident">iter</span>, <span class="ident">buffer</span>: <span class="prelude-val">None</span> }
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span><span class="op">></span> <span class="ident">Iterator</span> <span class="kw">for</span> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span>;
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&mut</span> <span class="self">self</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">buffer</span>.<span class="ident">take</span>() {
<span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>);
}
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">iter</span>.<span class="ident">next</span>() {
<span class="prelude-val">Some</span>(<span class="ident">ch</span>) => {
<span class="comment">// At this time, the longest replacement sequence has length 2.</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buffer</span> <span class="op">=</span> <span class="ident">ArrayVec</span>::<span class="op"><</span>[<span class="ident">char</span>; <span class="number">2</span>]<span class="op">></span><span class="ident">::new</span>();
<span class="ident"><span class="kw">super</span>::char::decompose_cjk_compat_variants</span>(<span class="ident">ch</span>, <span class="op">|</span><span class="ident">d</span><span class="op">|</span> <span class="ident">buffer</span>.<span class="ident">push</span>(<span class="ident">d</span>));
<span class="self">self</span>.<span class="ident">buffer</span> <span class="op">=</span> <span class="ident">buffer</span>.<span class="ident">get</span>(<span class="number">1</span>).<span class="ident">copied</span>();
<span class="prelude-val">Some</span>(<span class="ident">buffer</span>[<span class="number">0</span>])
}
<span class="prelude-val">None</span> => <span class="prelude-val">None</span>,
}
}
<span class="kw">fn</span> <span class="ident">size_hint</span>(<span class="kw-2">&</span><span class="self">self</span>) -> (<span class="ident">usize</span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>) {
<span class="kw">let</span> (<span class="ident">lower</span>, <span class="kw">_</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">iter</span>.<span class="ident">size_hint</span>();
(<span class="ident">lower</span>, <span class="prelude-val">None</span>)
}
}
<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">char</span><span class="op">></span> <span class="op">+</span> <span class="ident">Clone</span><span class="op">></span> <span class="ident">fmt::Display</span> <span class="kw">for</span> <span class="ident">Replacements</span><span class="op"><</span><span class="ident">I</span><span class="op">></span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&mut</span> <span class="ident">fmt::Formatter</span>) -> <span class="ident">fmt::Result</span> {
<span class="kw">for</span> <span class="ident">c</span> <span class="kw">in</span> <span class="self">self</span>.<span class="ident">clone</span>() {
<span class="ident">f</span>.<span class="ident">write_char</span>(<span class="ident">c</span>)<span class="question-mark">?</span>;
}
<span class="prelude-val">Ok</span>(())
}
}
</code></pre></div>
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