| <!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 `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/combine-4.6.6/src/parser/char.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>char.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" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" 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="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></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="sidebar"><a class="sidebar-logo" href="../../../combine/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../combine/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| </pre><pre class="rust"><code><span class="doccomment">//! Module containing parsers specialized on character streams. |
| |
| </span><span class="kw">use crate</span>::{ |
| error::ParseError, |
| parser::{ |
| combinator::no_partial, |
| repeat::skip_many, |
| token::{satisfy, token, tokens_cmp, Token}, |
| }, |
| stream::Stream, |
| Parser, |
| }; |
| |
| <span class="doccomment">/// Parses a character and succeeds if the character is equal to `c`. |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::char; |
| /// assert_eq!(char('!').parse("!"), Ok(('!', ""))); |
| /// assert!(char('A').parse("!").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>char<Input>(c: char) -> Token<Input> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| token(c) |
| } |
| |
| <span class="macro">parser! </span>{ |
| <span class="attribute">#[derive(Copy, Clone)] |
| </span><span class="kw">pub struct </span>Digit; |
| <span class="doccomment">/// Parses a base-10 digit. |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::digit; |
| /// assert_eq!(digit().parse("9"), Ok(('9', ""))); |
| /// assert!(digit().parse("A").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>digit[Input]()(Input) -> char |
| <span class="kw">where |
| </span>[Input: Stream<Token = char>,] |
| { |
| satisfy(|c: char| c.is_digit(<span class="number">10</span>)).expected(<span class="string">"digit"</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Parse a single whitespace according to [`std::char::is_whitespace`]. |
| /// |
| /// This includes space characters, tabs and newlines. |
| /// |
| /// [`std::char::is_whitespace`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_whitespace |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::space; |
| /// assert_eq!(space().parse(" "), Ok((' ', ""))); |
| /// assert_eq!(space().parse(" "), Ok((' ', " "))); |
| /// assert!(space().parse("!").is_err()); |
| /// assert!(space().parse("").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>space<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| <span class="kw">let </span>f: <span class="kw">fn</span>(char) -> bool = char::is_whitespace; |
| satisfy(f).expected(<span class="string">"whitespace"</span>) |
| } |
| |
| <span class="doccomment">/// Skips over zero or more spaces according to [`std::char::is_whitespace`]. |
| /// |
| /// This includes space characters, tabs and newlines. |
| /// |
| /// [`std::char::is_whitespace`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_whitespace |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::spaces; |
| /// assert_eq!(spaces().parse(""), Ok(((), ""))); |
| /// assert_eq!(spaces().parse(" "), Ok(((), ""))); |
| /// ``` |
| </span><span class="kw">pub fn </span>spaces<Input>() -> <span class="kw">impl </span>Parser<Input, Output = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| skip_many(space()).expected(<span class="string">"whitespaces"</span>) |
| } |
| |
| <span class="doccomment">/// Parses a newline character (`'\n'`). |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::newline; |
| /// assert_eq!(newline().parse("\n"), Ok(('\n', ""))); |
| /// assert!(newline().parse("\r").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>newline<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch == <span class="string">'\n'</span>).expected(<span class="string">"lf newline"</span>) |
| } |
| |
| <span class="doccomment">/// Parses carriage return and newline (`"\r\n"`), returning the newline character. |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::crlf; |
| /// assert_eq!(crlf().parse("\r\n"), Ok(('\n', ""))); |
| /// assert!(crlf().parse("\r").is_err()); |
| /// assert!(crlf().parse("\n").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>crlf<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| no_partial(satisfy(|ch: char| ch == <span class="string">'\r'</span>).with(newline())).expected(<span class="string">"crlf newline"</span>) |
| } |
| |
| <span class="doccomment">/// Parses a tab character (`'\t'`). |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::tab; |
| /// assert_eq!(tab().parse("\t"), Ok(('\t', ""))); |
| /// assert!(tab().parse(" ").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>tab<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch == <span class="string">'\t'</span>).expected(<span class="string">"tab"</span>) |
| } |
| |
| <span class="doccomment">/// Parses an uppercase letter according to [`std::char::is_uppercase`]. |
| /// |
| /// [`std::char::is_uppercase`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_uppercase |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::upper; |
| /// assert_eq!(upper().parse("A"), Ok(('A', ""))); |
| /// assert!(upper().parse("a").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>upper<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch.is_uppercase()).expected(<span class="string">"uppercase letter"</span>) |
| } |
| |
| <span class="doccomment">/// Parses an lowercase letter according to [`std::char::is_lowercase`]. |
| /// |
| /// [`std::char::is_lowercase`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_lowercase |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::lower; |
| /// assert_eq!(lower().parse("a"), Ok(('a', ""))); |
| /// assert!(lower().parse("A").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>lower<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch.is_lowercase()).expected(<span class="string">"lowercase letter"</span>) |
| } |
| |
| <span class="doccomment">/// Parses either an alphabet letter or digit according to [`std::char::is_alphanumeric`]. |
| /// |
| /// [`std::char::is_alphanumeric`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_alphanumeric |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::alpha_num; |
| /// assert_eq!(alpha_num().parse("A"), Ok(('A', ""))); |
| /// assert_eq!(alpha_num().parse("1"), Ok(('1', ""))); |
| /// assert!(alpha_num().parse("!").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>alpha_num<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch.is_alphanumeric()).expected(<span class="string">"letter or digit"</span>) |
| } |
| |
| <span class="doccomment">/// Parses an alphabet letter according to [`std::char::is_alphabetic`]. |
| /// |
| /// [`std::char::is_alphabetic`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_alphabetic |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::letter; |
| /// assert_eq!(letter().parse("a"), Ok(('a', ""))); |
| /// assert_eq!(letter().parse("A"), Ok(('A', ""))); |
| /// assert!(letter().parse("9").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>letter<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch.is_alphabetic()).expected(<span class="string">"letter"</span>) |
| } |
| |
| <span class="doccomment">/// Parses an octal digit. |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::oct_digit; |
| /// assert_eq!(oct_digit().parse("7"), Ok(('7', ""))); |
| /// assert!(oct_digit().parse("8").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>oct_digit<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch.is_digit(<span class="number">8</span>)).expected(<span class="string">"octal digit"</span>) |
| } |
| |
| <span class="doccomment">/// Parses a hexdecimal digit with uppercase and lowercase. |
| /// |
| /// ``` |
| /// use combine::Parser; |
| /// use combine::parser::char::hex_digit; |
| /// assert_eq!(hex_digit().parse("F"), Ok(('F', ""))); |
| /// assert!(hex_digit().parse("H").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>hex_digit<Input>() -> <span class="kw">impl </span>Parser<Input, Output = char, PartialState = ()> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| satisfy(|ch: char| ch.is_digit(<span class="number">0x10</span>)).expected(<span class="string">"hexadecimal digit"</span>) |
| } |
| |
| <span class="doccomment">/// Parses the string `s`. |
| /// |
| /// ``` |
| /// # extern crate combine; |
| /// # use combine::*; |
| /// # use combine::parser::char::string; |
| /// # fn main() { |
| /// let result = string("rust") |
| /// .parse("rust") |
| /// .map(|x| x.0); |
| /// assert_eq!(result, Ok("rust")); |
| /// # } |
| /// ``` |
| </span><span class="kw">pub fn </span>string<<span class="lifetime">'a</span>, Input>(s: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> <span class="kw">impl </span>Parser<Input, Output = <span class="kw-2">&</span><span class="lifetime">'a </span>str> |
| <span class="kw">where |
| </span>Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| string_cmp(s, |l, r| l == r) |
| } |
| |
| <span class="doccomment">/// Parses the string `s`, using `cmp` to compare each character. |
| /// |
| /// ``` |
| /// # extern crate combine; |
| /// # use combine::*; |
| /// # use combine::parser::char::string_cmp; |
| /// # fn main() { |
| /// let result = string_cmp("rust", |l, r| l.eq_ignore_ascii_case(&r)) |
| /// .parse("RusT") |
| /// .map(|x| x.0); |
| /// assert_eq!(result, Ok("rust")); |
| /// # } |
| /// ``` |
| </span><span class="kw">pub fn </span>string_cmp<<span class="lifetime">'a</span>, C, Input>(s: <span class="kw-2">&</span><span class="lifetime">'static </span>str, cmp: C) -> <span class="kw">impl </span>Parser<Input, Output = <span class="kw-2">&</span><span class="lifetime">'a </span>str> |
| <span class="kw">where |
| </span>C: FnMut(char, char) -> bool, |
| Input: Stream<Token = char>, |
| Input::Error: ParseError<Input::Token, Input::Range, Input::Position>, |
| { |
| tokens_cmp(s.chars(), cmp).map(<span class="kw">move </span>|<span class="kw">_</span>| s).expected(s) |
| } |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, test))] |
| </span><span class="kw">mod </span>tests { |
| |
| <span class="kw">use crate</span>::{ |
| parser::EasyParser, |
| stream::{ |
| easy::{Error, Errors}, |
| position::{<span class="self">self</span>, SourcePosition}, |
| }, |
| }; |
| |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>space_error() { |
| <span class="kw">let </span>result = space().easy_parse(<span class="string">""</span>); |
| <span class="macro">assert!</span>(result.is_err()); |
| <span class="macro">assert_eq!</span>( |
| result.unwrap_err().errors, |
| <span class="macro">vec!</span>[Error::end_of_input(), Error::Expected(<span class="string">"whitespace"</span>.into())] |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>string_committed() { |
| <span class="kw">let </span>result = string(<span class="string">"a"</span>).easy_parse(position::Stream::new(<span class="string">"b"</span>)); |
| <span class="macro">assert!</span>(result.is_err()); |
| <span class="macro">assert_eq!</span>( |
| result.unwrap_err().position, |
| SourcePosition { line: <span class="number">1</span>, column: <span class="number">1 </span>} |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>string_error() { |
| <span class="kw">let </span>result = string(<span class="string">"abc"</span>).easy_parse(position::Stream::new(<span class="string">"bc"</span>)); |
| <span class="macro">assert_eq!</span>( |
| result, |
| <span class="prelude-val">Err</span>(Errors { |
| position: SourcePosition { line: <span class="number">1</span>, column: <span class="number">1 </span>}, |
| errors: <span class="macro">vec!</span>[Error::Unexpected(<span class="string">'b'</span>.into()), Error::Expected(<span class="string">"abc"</span>.into())], |
| }) |
| ); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="combine" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
