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| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
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| <span id="1000">1000</span> |
| <span id="1001">1001</span> |
| <span id="1002">1002</span> |
| <span id="1003">1003</span> |
| <span id="1004">1004</span> |
| <span id="1005">1005</span> |
| <span id="1006">1006</span> |
| <span id="1007">1007</span> |
| <span id="1008">1008</span> |
| <span id="1009">1009</span> |
| <span id="1010">1010</span> |
| <span id="1011">1011</span> |
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| <span id="1016">1016</span> |
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| <span id="1019">1019</span> |
| <span id="1020">1020</span> |
| <span id="1021">1021</span> |
| <span id="1022">1022</span> |
| <span id="1023">1023</span> |
| <span id="1024">1024</span> |
| <span id="1025">1025</span> |
| <span id="1026">1026</span> |
| <span id="1027">1027</span> |
| <span id="1028">1028</span> |
| <span id="1029">1029</span> |
| <span id="1030">1030</span> |
| <span id="1031">1031</span> |
| <span id="1032">1032</span> |
| <span id="1033">1033</span> |
| <span id="1034">1034</span> |
| <span id="1035">1035</span> |
| <span id="1036">1036</span> |
| <span id="1037">1037</span> |
| <span id="1038">1038</span> |
| <span id="1039">1039</span> |
| <span id="1040">1040</span> |
| <span id="1041">1041</span> |
| <span id="1042">1042</span> |
| <span id="1043">1043</span> |
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| <span id="1045">1045</span> |
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| <span id="1048">1048</span> |
| <span id="1049">1049</span> |
| <span id="1050">1050</span> |
| <span id="1051">1051</span> |
| <span id="1052">1052</span> |
| <span id="1053">1053</span> |
| <span id="1054">1054</span> |
| <span id="1055">1055</span> |
| <span id="1056">1056</span> |
| <span id="1057">1057</span> |
| <span id="1058">1058</span> |
| <span id="1059">1059</span> |
| <span id="1060">1060</span> |
| <span id="1061">1061</span> |
| <span id="1062">1062</span> |
| <span id="1063">1063</span> |
| <span id="1064">1064</span> |
| <span id="1065">1065</span> |
| <span id="1066">1066</span> |
| <span id="1067">1067</span> |
| <span id="1068">1068</span> |
| <span id="1069">1069</span> |
| <span id="1070">1070</span> |
| <span id="1071">1071</span> |
| <span id="1072">1072</span> |
| <span id="1073">1073</span> |
| <span id="1074">1074</span> |
| <span id="1075">1075</span> |
| <span id="1076">1076</span> |
| <span id="1077">1077</span> |
| <span id="1078">1078</span> |
| <span id="1079">1079</span> |
| <span id="1080">1080</span> |
| <span id="1081">1081</span> |
| <span id="1082">1082</span> |
| <span id="1083">1083</span> |
| <span id="1084">1084</span> |
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| <span id="2756">2756</span> |
| <span id="2757">2757</span> |
| </pre><pre class="rust "> |
| <span class="comment">// Copyright 2014-2015 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">std</span>::<span class="ident">cmp</span>::{<span class="ident">max</span>, <span class="ident">min</span>}; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">u8</span>; |
| |
| <span class="kw">use</span> <span class="ident">unicode</span>::<span class="ident">regex</span>::<span class="ident">UNICODE_CLASSES</span>; |
| |
| <span class="kw">use</span> { |
| <span class="ident">Expr</span>, <span class="ident">Repeater</span>, <span class="ident">CharClass</span>, <span class="ident">ClassRange</span>, |
| <span class="ident">CaptureIndex</span>, <span class="ident">CaptureName</span>, |
| <span class="ident">Error</span>, <span class="ident">ErrorKind</span>, <span class="prelude-ty">Result</span>, |
| }; |
| |
| <span class="doccomment">/// Parser state.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Keeps the entire input in memory and maintains a cursor (char offset).</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// It also keeps an expression stack, which is responsible for managing</span> |
| <span class="doccomment">/// grouped expressions and flag state.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Parser</span> { |
| <span class="ident">chars</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">char</span><span class="op">></span>, |
| <span class="ident">chari</span>: <span class="ident">usize</span>, |
| <span class="ident">stack</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span>, |
| <span class="ident">caps</span>: <span class="ident">usize</span>, |
| <span class="ident">names</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="comment">// to check for duplicates</span> |
| <span class="ident">flags</span>: <span class="ident">Flags</span>, |
| } |
| |
| <span class="doccomment">/// Flag state used in the parser.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Flags</span> { |
| <span class="doccomment">/// i</span> |
| <span class="kw">pub</span> <span class="ident">casei</span>: <span class="ident">bool</span>, |
| <span class="doccomment">/// m</span> |
| <span class="kw">pub</span> <span class="ident">multi</span>: <span class="ident">bool</span>, |
| <span class="doccomment">/// s</span> |
| <span class="kw">pub</span> <span class="ident">dotnl</span>: <span class="ident">bool</span>, |
| <span class="doccomment">/// U</span> |
| <span class="kw">pub</span> <span class="ident">swap_greed</span>: <span class="ident">bool</span>, |
| <span class="doccomment">/// x</span> |
| <span class="kw">pub</span> <span class="ident">ignore_space</span>: <span class="ident">bool</span>, |
| <span class="doccomment">/// u</span> |
| <span class="kw">pub</span> <span class="ident">unicode</span>: <span class="ident">bool</span>, |
| <span class="doccomment">/// Not actually a flag, but when disabled, every regex that may not match</span> |
| <span class="doccomment">/// UTF-8 exclusively will cause the parser to return an error.</span> |
| <span class="kw">pub</span> <span class="ident">allow_bytes</span>: <span class="ident">bool</span>, |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">Flags</span> { |
| <span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="self">Self</span> { |
| <span class="ident">Flags</span> { |
| <span class="ident">casei</span>: <span class="bool-val">false</span>, |
| <span class="ident">multi</span>: <span class="bool-val">false</span>, |
| <span class="ident">dotnl</span>: <span class="bool-val">false</span>, |
| <span class="ident">swap_greed</span>: <span class="bool-val">false</span>, |
| <span class="ident">ignore_space</span>: <span class="bool-val">false</span>, |
| <span class="ident">unicode</span>: <span class="bool-val">true</span>, |
| <span class="ident">allow_bytes</span>: <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="doccomment">/// An ephemeral type for representing the expression stack.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Everything on the stack is either a regular expression or a marker</span> |
| <span class="doccomment">/// indicating the opening of a group (possibly non-capturing). The opening</span> |
| <span class="doccomment">/// of a group copies the current flag state, which is reset on the parser</span> |
| <span class="doccomment">/// state once the group closes.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span> |
| <span class="kw">enum</span> <span class="ident">Build</span> { |
| <span class="ident">Expr</span>(<span class="ident">Expr</span>), |
| <span class="ident">LeftParen</span> { |
| <span class="ident">i</span>: <span class="ident">CaptureIndex</span>, |
| <span class="ident">name</span>: <span class="ident">CaptureName</span>, |
| <span class="ident">chari</span>: <span class="ident">usize</span>, |
| <span class="ident">old_flags</span>: <span class="ident">Flags</span>, |
| }, |
| } |
| |
| <span class="comment">// Primary expression parsing routines.</span> |
| <span class="kw">impl</span> <span class="ident">Parser</span> { |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">parse</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">flags</span>: <span class="ident">Flags</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Expr</span><span class="op">></span> { |
| <span class="ident">Parser</span> { |
| <span class="ident">chars</span>: <span class="ident">s</span>.<span class="ident">chars</span>().<span class="ident">collect</span>(), |
| <span class="ident">chari</span>: <span class="number">0</span>, |
| <span class="ident">stack</span>: <span class="macro">vec</span><span class="macro">!</span>[], |
| <span class="ident">caps</span>: <span class="number">0</span>, |
| <span class="ident">names</span>: <span class="macro">vec</span><span class="macro">!</span>[], |
| <span class="ident">flags</span>: <span class="ident">flags</span>, |
| }.<span class="ident">parse_expr</span>() |
| } |
| |
| <span class="comment">// Top-level expression parser.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Starts at the beginning of the input and consumes until either the end</span> |
| <span class="comment">// of input or an error.</span> |
| <span class="kw">fn</span> <span class="ident">parse_expr</span>(<span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Expr</span><span class="op">></span> { |
| <span class="kw">while</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="kw">let</span> <span class="ident">build_expr</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur</span>() { |
| <span class="string">'\\'</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_escape</span>()), |
| <span class="string">'|'</span> <span class="op">=></span> { <span class="kw">let</span> <span class="ident">e</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">alternate</span>()); <span class="self">self</span>.<span class="ident">bump</span>(); <span class="ident">e</span> } |
| <span class="string">'?'</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_simple_repeat</span>(<span class="ident">Repeater</span>::<span class="ident">ZeroOrOne</span>)), |
| <span class="string">'*'</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_simple_repeat</span>(<span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>)), |
| <span class="string">'+'</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_simple_repeat</span>(<span class="ident">Repeater</span>::<span class="ident">OneOrMore</span>)), |
| <span class="string">'{'</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_counted_repeat</span>()), |
| <span class="string">'['</span> <span class="op">=></span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">maybe_parse_ascii</span>() { |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_class</span>()), |
| <span class="prelude-val">Some</span>(<span class="ident">cls</span>) <span class="op">=></span> <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">cls</span>)), |
| }, |
| <span class="string">'^'</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">multi</span> { |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">StartLine</span>) |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">StartText</span>) |
| } |
| } |
| <span class="string">'$'</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">multi</span> { |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">EndLine</span>) |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">EndText</span>) |
| } |
| } |
| <span class="string">'.'</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">dotnl</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">AnyChar</span>) |
| } <span class="kw">else</span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">allow_bytes</span> { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>)); |
| } |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">AnyByte</span>) |
| } |
| } <span class="kw">else</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">AnyCharNoNL</span>) |
| } <span class="kw">else</span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">allow_bytes</span> { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>)); |
| } |
| <span class="self">self</span>.<span class="ident">parse_one</span>(<span class="ident">Expr</span>::<span class="ident">AnyByteNoNL</span>) |
| } |
| } |
| } |
| <span class="string">'('</span> <span class="op">=></span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_group</span>()), |
| <span class="string">')'</span> <span class="op">=></span> { |
| <span class="kw">let</span> (<span class="ident">old_flags</span>, <span class="ident">e</span>) <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">close_paren</span>()); |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="self">self</span>.<span class="ident">flags</span> <span class="op">=</span> <span class="ident">old_flags</span>; |
| <span class="ident">e</span> |
| } |
| _ <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="ident">c</span>)) |
| } |
| }; |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">build_expr</span>.<span class="ident">is_empty</span>() { |
| <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">push</span>(<span class="ident">build_expr</span>); |
| } |
| } |
| <span class="self">self</span>.<span class="ident">finish_concat</span>() |
| } |
| |
| <span class="comment">// Parses an escape sequence, e.g., \Ax</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `\`</span> |
| <span class="comment">// End: `x`</span> |
| <span class="kw">fn</span> <span class="ident">parse_escape</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnexpectedEscapeEof</span>)); |
| } |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">cur</span>(); |
| <span class="kw">if</span> <span class="ident">is_punct</span>(<span class="ident">c</span>) { |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="ident">c</span>))); |
| } |
| <span class="kw">match</span> <span class="ident">c</span> { |
| <span class="string">'a'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="string">'\x07'</span>))) } |
| <span class="string">'f'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="string">'\x0C'</span>))) } |
| <span class="string">'t'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="string">'\t'</span>))) } |
| <span class="string">'n'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="string">'\n'</span>))) } |
| <span class="string">'r'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="string">'\r'</span>))) } |
| <span class="string">'v'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="string">'\x0B'</span>))) } |
| <span class="string">'A'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">StartText</span>)) } |
| <span class="string">'z'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">EndText</span>)) } |
| <span class="string">'b'</span> <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="ident">Expr</span>::<span class="ident">WordBoundary</span> |
| } <span class="kw">else</span> { |
| <span class="ident">Expr</span>::<span class="ident">WordBoundaryAscii</span> |
| })) |
| } |
| <span class="string">'B'</span> <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="ident">Expr</span>::<span class="ident">NotWordBoundary</span> |
| } <span class="kw">else</span> { |
| <span class="ident">Expr</span>::<span class="ident">NotWordBoundaryAscii</span> |
| })) |
| } |
| <span class="string">'0'</span><span class="op">|</span><span class="string">'1'</span><span class="op">|</span><span class="string">'2'</span><span class="op">|</span><span class="string">'3'</span><span class="op">|</span><span class="string">'4'</span><span class="op">|</span><span class="string">'5'</span><span class="op">|</span><span class="string">'6'</span><span class="op">|</span><span class="string">'7'</span> <span class="op">=></span> <span class="self">self</span>.<span class="ident">parse_octal</span>(), |
| <span class="string">'x'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="self">self</span>.<span class="ident">parse_hex</span>() } |
| <span class="string">'p'</span><span class="op">|</span><span class="string">'P'</span> <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="self">self</span>.<span class="ident">parse_unicode_class</span>(<span class="ident">c</span> <span class="op">==</span> <span class="string">'P'</span>) |
| .<span class="ident">map</span>(<span class="op">|</span><span class="ident">cls</span><span class="op">|</span> <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">cls</span>))) |
| } |
| <span class="string">'d'</span><span class="op">|</span><span class="string">'s'</span><span class="op">|</span><span class="string">'w'</span><span class="op">|</span><span class="string">'D'</span><span class="op">|</span><span class="string">'S'</span><span class="op">|</span><span class="string">'W'</span> <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="self">self</span>.<span class="ident">parse_perl_class</span>(<span class="ident">c</span>)))) |
| } |
| <span class="ident">c</span> <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedEscape</span>(<span class="ident">c</span>))), |
| } |
| } |
| |
| <span class="comment">// Parses a group, e.g., `(abc)`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `(`</span> |
| <span class="comment">// End: `a`</span> |
| <span class="comment">//</span> |
| <span class="comment">// A more interesting example, `(?P<foo>abc)`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `(`</span> |
| <span class="comment">// End: `a`</span> |
| <span class="kw">fn</span> <span class="ident">parse_group</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">chari</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">chari</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">name</span>: <span class="ident">CaptureName</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">"?P<"</span>) { |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_group_name</span>()); |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">names</span>.<span class="ident">iter</span>().<span class="ident">any</span>(<span class="op">|</span><span class="ident">n2</span><span class="op">|</span> <span class="ident">n2</span> <span class="op">==</span> <span class="kw-2">&</span><span class="ident">n</span>) { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">DuplicateCaptureName</span>(<span class="ident">n</span>))); |
| } |
| <span class="self">self</span>.<span class="ident">names</span>.<span class="ident">push</span>(<span class="ident">n</span>.<span class="ident">clone</span>()); |
| <span class="ident">name</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">n</span>); |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">"?"</span>) { |
| <span class="comment">// This can never be capturing. It's either setting flags for</span> |
| <span class="comment">// the current group, or it's opening a non-capturing group or</span> |
| <span class="comment">// it's opening a group with a specific set of flags (which is</span> |
| <span class="comment">// also non-capturing).</span> |
| <span class="comment">// Anything else is an error.</span> |
| <span class="kw">return</span> <span class="self">self</span>.<span class="ident">parse_group_flags</span>(<span class="ident">chari</span>); |
| } |
| <span class="self">self</span>.<span class="ident">caps</span> <span class="op">=</span> <span class="ident">checkadd</span>(<span class="self">self</span>.<span class="ident">caps</span>, <span class="number">1</span>); |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span> { |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">caps</span>), |
| <span class="ident">name</span>: <span class="ident">name</span>, |
| <span class="ident">chari</span>: <span class="ident">chari</span>, |
| <span class="ident">old_flags</span>: <span class="self">self</span>.<span class="ident">flags</span>, <span class="comment">// no flags changed if we're here</span> |
| }) |
| } |
| |
| <span class="comment">// Parses flags (inline or grouped), e.g., `(?s-i:abc)`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `s`</span> |
| <span class="comment">// End: `a`</span> |
| <span class="comment">//</span> |
| <span class="comment">// Another example, `(?s-i)a`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `s`</span> |
| <span class="comment">// End: `a`</span> |
| <span class="kw">fn</span> <span class="ident">parse_group_flags</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">opening_chari</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">old_flags</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">flags</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sign</span> <span class="op">=</span> <span class="bool-val">true</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">false</span>; |
| <span class="kw">loop</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="comment">// e.g., (?i</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnexpectedFlagEof</span>)); |
| } |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur</span>() { |
| <span class="string">'i'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">casei</span> <span class="op">=</span> <span class="ident">sign</span>; <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">true</span> } |
| <span class="string">'m'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">multi</span> <span class="op">=</span> <span class="ident">sign</span>; <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">true</span> } |
| <span class="string">'s'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">dotnl</span> <span class="op">=</span> <span class="ident">sign</span>; <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">true</span> } |
| <span class="string">'U'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">swap_greed</span> <span class="op">=</span> <span class="ident">sign</span>; <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">true</span> } |
| <span class="string">'x'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">ignore_space</span> <span class="op">=</span> <span class="ident">sign</span>; <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">true</span> } |
| <span class="string">'u'</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> <span class="op">=</span> <span class="ident">sign</span>; <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">true</span> } |
| <span class="string">'-'</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">sign</span> { |
| <span class="comment">// e.g., (?-i-s)</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">DoubleFlagNegation</span>)); |
| } |
| <span class="ident">sign</span> <span class="op">=</span> <span class="bool-val">false</span>; |
| <span class="ident">saw_flag</span> <span class="op">=</span> <span class="bool-val">false</span>; |
| } |
| <span class="string">')'</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">saw_flag</span> { |
| <span class="comment">// e.g., (?)</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyFlagNegation</span>)); |
| } |
| <span class="comment">// At this point, we're just changing the flags inside</span> |
| <span class="comment">// the current group, which means the old flags have</span> |
| <span class="comment">// been saved elsewhere. Our modifications in place are</span> |
| <span class="comment">// okey dokey!</span> |
| <span class="comment">//</span> |
| <span class="comment">// This particular flag expression only has a stateful</span> |
| <span class="comment">// impact on a regex's AST, so nothing gets explicitly</span> |
| <span class="comment">// added.</span> |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Empty</span>)); |
| } |
| <span class="string">':'</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">sign</span> <span class="op">&&</span> <span class="op">!</span><span class="ident">saw_flag</span> { |
| <span class="comment">// e.g., (?i-:a)</span> |
| <span class="comment">// Note that if there's no negation, it's OK not</span> |
| <span class="comment">// to see flag, because you end up with a regular</span> |
| <span class="comment">// non-capturing group: `(?:a)`.</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyFlagNegation</span>)); |
| } |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span> { |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| <span class="ident">chari</span>: <span class="ident">opening_chari</span>, |
| <span class="ident">old_flags</span>: <span class="ident">old_flags</span>, |
| }); |
| } |
| <span class="comment">// e.g., (?z:a)</span> |
| <span class="ident">c</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedFlag</span>(<span class="ident">c</span>))), |
| } |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| } |
| } |
| |
| <span class="comment">// Parses a group name, e.g., `foo` in `(?P<foo>abc)`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `f`</span> |
| <span class="comment">// End: `a`</span> |
| <span class="kw">fn</span> <span class="ident">parse_group_name</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">name</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">new</span>(); |
| <span class="kw">while</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">eof</span>() <span class="op">&&</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">peek_is</span>(<span class="string">'>'</span>) { |
| <span class="ident">name</span>.<span class="ident">push</span>(<span class="self">self</span>.<span class="ident">bump</span>()); |
| } |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="comment">// e.g., (?P<a</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnclosedCaptureName</span>(<span class="ident">name</span>))); |
| } |
| <span class="kw">let</span> <span class="ident">all_valid</span> <span class="op">=</span> <span class="ident">name</span>.<span class="ident">chars</span>().<span class="ident">all</span>(<span class="ident">is_valid_capture_char</span>); |
| <span class="kw">match</span> <span class="ident">name</span>.<span class="ident">chars</span>().<span class="ident">next</span>() { |
| <span class="comment">// e.g., (?P<>a)</span> |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyCaptureName</span>)), |
| <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="kw">if</span> (<span class="ident">c</span> <span class="op">>=</span> <span class="string">'0'</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op"><=</span> <span class="string">'9'</span>) <span class="op">||</span> <span class="op">!</span><span class="ident">all_valid</span> <span class="op">=></span> { |
| <span class="comment">// e.g., (?P<a#>x)</span> |
| <span class="comment">// e.g., (?P<1a>x)</span> |
| <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidCaptureName</span>(<span class="ident">name</span>))) |
| } |
| _ <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); <span class="comment">// for `>`</span> |
| <span class="prelude-val">Ok</span>(<span class="ident">name</span>) |
| } |
| } |
| } |
| |
| <span class="comment">// Parses a counted repeition operator, e.g., `a{2,4}?z`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `{`</span> |
| <span class="comment">// End: `z`</span> |
| <span class="kw">fn</span> <span class="ident">parse_counted_repeat</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">e</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">pop</span>(<span class="ident">ErrorKind</span>::<span class="ident">RepeaterExpectsExpr</span>)); <span class="comment">// e.g., ({5}</span> |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">e</span>.<span class="ident">can_repeat</span>() { |
| <span class="comment">// e.g., a*{5}</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">RepeaterUnexpectedExpr</span>(<span class="ident">e</span>))); |
| } |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">let</span> <span class="ident">min</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_decimal</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">!=</span> <span class="string">','</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op">!=</span> <span class="string">'}'</span>)); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">max_opt</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">min</span>); |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">','</span>) { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">peek_is</span>(<span class="string">'}'</span>) { |
| <span class="ident">max_opt</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| } <span class="kw">else</span> { |
| <span class="kw">let</span> <span class="ident">max</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_decimal</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">!=</span> <span class="string">'}'</span>)); |
| <span class="kw">if</span> <span class="ident">min</span> <span class="op">></span> <span class="ident">max</span> { |
| <span class="comment">// e.g., a{2,1}</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidRepeatRange</span> { |
| <span class="ident">min</span>: <span class="ident">min</span>, |
| <span class="ident">max</span>: <span class="ident">max</span>, |
| })); |
| } |
| <span class="ident">max_opt</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">max</span>); |
| } |
| } |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'}'</span>) { |
| <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnclosedRepeat</span>)) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">e</span>), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="ident">min</span>, <span class="ident">max</span>: <span class="ident">max_opt</span> }, |
| <span class="ident">greedy</span>: <span class="op">!</span><span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'?'</span>) <span class="op">^</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">swap_greed</span>, |
| })) |
| } |
| } |
| |
| <span class="comment">// Parses a simple repetition operator, e.g., `a+?z`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `+`</span> |
| <span class="comment">// End: `z`</span> |
| <span class="comment">//</span> |
| <span class="comment">// N.B. "simple" in this context means "not min/max repetition",</span> |
| <span class="comment">// e.g., `a{1,2}`.</span> |
| <span class="kw">fn</span> <span class="ident">parse_simple_repeat</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">rep</span>: <span class="ident">Repeater</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">e</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">pop</span>(<span class="ident">ErrorKind</span>::<span class="ident">RepeaterExpectsExpr</span>)); <span class="comment">// e.g., (*</span> |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">e</span>.<span class="ident">can_repeat</span>() { |
| <span class="comment">// e.g., a**</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">RepeaterUnexpectedExpr</span>(<span class="ident">e</span>))); |
| } |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">e</span>), |
| <span class="ident">r</span>: <span class="ident">rep</span>, |
| <span class="ident">greedy</span>: <span class="op">!</span><span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'?'</span>) <span class="op">^</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">swap_greed</span>, |
| })) |
| } |
| |
| <span class="comment">// Parses a decimal number until the given character, e.g., `a{123,456}`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `1`</span> |
| <span class="comment">// End: `,` (where `until == ','`)</span> |
| <span class="kw">fn</span> <span class="ident">parse_decimal</span><span class="op"><</span><span class="ident">B</span>: <span class="ident">Bumpable</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">until</span>: <span class="ident">B</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">bump_get</span>(<span class="ident">until</span>) { |
| <span class="comment">// e.g., a{}</span> |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">MissingBase10</span>)), |
| <span class="prelude-val">Some</span>(<span class="ident">n</span>) <span class="op">=></span> { |
| <span class="comment">// e.g., a{xyz</span> |
| <span class="comment">// e.g., a{9999999999}</span> |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">n</span>.<span class="ident">trim</span>(); |
| <span class="ident">u32</span>::<span class="ident">from_str_radix</span>(<span class="ident">n</span>, <span class="number">10</span>) |
| .<span class="ident">map_err</span>(<span class="op">|</span>_<span class="op">|</span> <span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="ident">n</span>.<span class="ident">into</span>()))) |
| } |
| } |
| } |
| |
| <span class="comment">// Parses an octal number, up to 3 digits, e.g., `a\123b`</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `1`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="kw">fn</span> <span class="ident">parse_octal</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">char</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">i</span> <span class="op">=</span> <span class="number">0</span>; <span class="comment">// counter for limiting octal to 3 digits.</span> |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump_get</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> { <span class="ident">i</span> <span class="op">+=</span> <span class="number">1</span>; <span class="ident">i</span> <span class="op"><=</span> <span class="number">3</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op">>=</span> <span class="string">'0'</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op"><=</span> <span class="string">'7'</span> }) |
| .<span class="ident">expect</span>(<span class="string">"octal string"</span>); <span class="comment">// guaranteed at least 1 digit</span> |
| <span class="comment">// I think both of the following unwraps are impossible to fail.</span> |
| <span class="comment">// We limit it to a three digit octal number, which maxes out at</span> |
| <span class="comment">// `0777` or `511` in decimal. Since all digits are in `0...7`, we'll</span> |
| <span class="comment">// always have a valid `u32` number. Moreover, since all numbers in</span> |
| <span class="comment">// the range `0...511` are valid Unicode scalar values, it will always</span> |
| <span class="comment">// be a valid `char`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Hence, we `unwrap` with reckless abandon.</span> |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">u32</span>::<span class="ident">from_str_radix</span>(<span class="kw-2">&</span><span class="ident">n</span>, <span class="number">8</span>).<span class="ident">ok</span>().<span class="ident">expect</span>(<span class="string">"valid octal number"</span>); |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">u32_to_one_byte</span>(<span class="ident">n</span>))); |
| } |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="ident">char</span>::<span class="ident">from_u32</span>(<span class="ident">n</span>).<span class="ident">expect</span>(<span class="string">"Unicode scalar value"</span>); |
| <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="ident">c</span>))) |
| } |
| |
| <span class="comment">// Parses a hex number, e.g., `a\x5ab`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `5`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="comment">//</span> |
| <span class="comment">// And also, `a\x{2603}b`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `{`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="kw">fn</span> <span class="ident">parse_hex</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'{'</span>) { |
| <span class="self">self</span>.<span class="ident">parse_hex_many_digits</span>() |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">parse_hex_two_digits</span>() |
| } |
| } |
| |
| <span class="comment">// Parses a many-digit hex number, e.g., `a\x{2603}b`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `2`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="kw">fn</span> <span class="ident">parse_hex_many_digits</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">char</span>; |
| |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump_get</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">!=</span> <span class="string">'}'</span>).<span class="ident">unwrap_or</span>(<span class="string">""</span>.<span class="ident">into</span>()); |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">u32</span>::<span class="ident">from_str_radix</span>(<span class="kw-2">&</span><span class="ident">s</span>, <span class="number">16</span>) |
| .<span class="ident">map_err</span>(<span class="op">|</span>_<span class="op">|</span> <span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidBase16</span>(<span class="ident">s</span>)))); |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'}'</span>) { |
| <span class="comment">// e.g., a\x{d</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnclosedHex</span>)); |
| } |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">u32_to_one_byte</span>(<span class="ident">n</span>))); |
| } |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">char</span>::<span class="ident">from_u32</span>(<span class="ident">n</span>) |
| .<span class="ident">ok_or</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidScalarValue</span>(<span class="ident">n</span>)))); |
| <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="ident">c</span>))) |
| } |
| |
| <span class="comment">// Parses a two-digit hex number, e.g., `a\x5ab`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `5`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="kw">fn</span> <span class="ident">parse_hex_two_digits</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">char</span>; |
| |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">i</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump_get</span>(<span class="op">|</span>_<span class="op">|</span> { <span class="ident">i</span> <span class="op">+=</span> <span class="number">1</span>; <span class="ident">i</span> <span class="op"><=</span> <span class="number">2</span> }).<span class="ident">unwrap_or</span>(<span class="string">""</span>.<span class="ident">into</span>()); |
| <span class="kw">if</span> <span class="ident">s</span>.<span class="ident">len</span>() <span class="op"><</span> <span class="number">2</span> { |
| <span class="comment">// e.g., a\x</span> |
| <span class="comment">// e.g., a\xf</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnexpectedTwoDigitHexEof</span>)); |
| } |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">u32</span>::<span class="ident">from_str_radix</span>(<span class="kw-2">&</span><span class="ident">s</span>, <span class="number">16</span>) |
| .<span class="ident">map_err</span>(<span class="op">|</span>_<span class="op">|</span> <span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidBase16</span>(<span class="ident">s</span>)))); |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">u32_to_one_byte</span>(<span class="ident">n</span>))); |
| } |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="ident">char</span>::<span class="ident">from_u32</span>(<span class="ident">n</span>).<span class="ident">expect</span>(<span class="string">"Unicode scalar value"</span>); |
| <span class="prelude-val">Ok</span>(<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">lit</span>(<span class="ident">c</span>))) |
| } |
| |
| <span class="comment">// Parses a character class, e.g., `[^a-zA-Z0-9]+`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `[`</span> |
| <span class="comment">// End: `+`</span> |
| <span class="kw">fn</span> <span class="ident">parse_class</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">let</span> <span class="ident">negated</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'^'</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">class</span> <span class="op">=</span> <span class="ident">CharClass</span>::<span class="ident">empty</span>(); |
| <span class="kw">while</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'-'</span>) { |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">push</span>(<span class="ident">ClassRange</span>::<span class="ident">one</span>(<span class="string">'-'</span>)); |
| } |
| <span class="kw">loop</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="comment">// e.g., [a</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>)); |
| } |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur</span>() { |
| <span class="comment">// If no ranges have been added, then `]` is the first</span> |
| <span class="comment">// character (sans, perhaps, the `^` symbol), so it should</span> |
| <span class="comment">// be interpreted as a `]` instead of a closing class bracket.</span> |
| <span class="string">']'</span> <span class="kw">if</span> <span class="ident">class</span>.<span class="ident">len</span>() <span class="op">></span> <span class="number">0</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">bump</span>(); <span class="kw">break</span> } |
| <span class="string">'['</span> <span class="op">=></span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">maybe_parse_ascii</span>() { |
| <span class="prelude-val">Some</span>(<span class="ident">class2</span>) <span class="op">=></span> <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">extend</span>(<span class="ident">class2</span>), |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_class_range</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">class</span>, <span class="string">'['</span>)) |
| } |
| }, |
| <span class="string">'\\'</span> <span class="op">=></span> <span class="kw">match</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_escape</span>()) { |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class2</span>)) <span class="op">=></span> { |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">extend</span>(<span class="ident">class2</span>); |
| } |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class2</span>)) <span class="op">=></span> { |
| <span class="kw">for</span> <span class="ident">byte_range</span> <span class="kw">in</span> <span class="ident">class2</span> { |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">byte_range</span>.<span class="ident">start</span> <span class="kw">as</span> <span class="ident">char</span>; |
| <span class="kw">let</span> <span class="ident">e</span> <span class="op">=</span> <span class="ident">byte_range</span>.<span class="ident">end</span> <span class="kw">as</span> <span class="ident">char</span>; |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">push</span>(<span class="ident">ClassRange</span>::<span class="ident">new</span>(<span class="ident">s</span>, <span class="ident">e</span>)); |
| } |
| } |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Literal</span> { <span class="ident">chars</span>, .. }) <span class="op">=></span> { |
| <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_class_range</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">class</span>, <span class="ident">chars</span>[<span class="number">0</span>])); |
| } |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">LiteralBytes</span> { <span class="ident">bytes</span>, .. }) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="ident">bytes</span>[<span class="number">0</span>] <span class="kw">as</span> <span class="ident">char</span>; |
| <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_class_range</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">class</span>, <span class="ident">start</span>)); |
| } |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">err</span> <span class="op">=</span> <span class="ident">ErrorKind</span>::<span class="ident">InvalidClassEscape</span>(<span class="ident">e</span>); |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">err</span>)); |
| } |
| <span class="comment">// Because `parse_escape` can never return `LeftParen`.</span> |
| _ <span class="op">=></span> <span class="macro">unreachable</span><span class="macro">!</span>(), |
| }, |
| <span class="ident">start</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="kw">let</span> _ <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">codepoint_to_one_byte</span>(<span class="ident">start</span>)); |
| } |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_class_range</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">class</span>, <span class="ident">start</span>)); |
| } |
| } |
| } |
| <span class="ident">class</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">class_transform</span>(<span class="ident">negated</span>, <span class="ident">class</span>).<span class="ident">canonicalize</span>(); |
| <span class="kw">if</span> <span class="ident">class</span>.<span class="ident">is_empty</span>() { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyClass</span>)); |
| } |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>) |
| } <span class="kw">else</span> { |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class</span>.<span class="ident">to_byte_class</span>()) |
| })) |
| } |
| |
| <span class="comment">// Parses a single range in a character class.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Since this is a helper for `parse_class`, its signature sticks out.</span> |
| <span class="comment">// Namely, it requires the start character of the range and the char</span> |
| <span class="comment">// class to mutate.</span> |
| <span class="comment">//</span> |
| <span class="comment">// e.g., `[a-z]`</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `-` (with start == `a`)</span> |
| <span class="comment">// End: `]`</span> |
| <span class="kw">fn</span> <span class="ident">parse_class_range</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">class</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">CharClass</span>, <span class="ident">start</span>: <span class="ident">char</span>) |
| <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'-'</span>) { |
| <span class="comment">// Not a range, so just push a singleton range.</span> |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">push</span>(<span class="ident">ClassRange</span>::<span class="ident">one</span>(<span class="ident">start</span>)); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(()); |
| } |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="comment">// e.g., [a-</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>)); |
| } |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">peek_is</span>(<span class="string">']'</span>) { |
| <span class="comment">// This is the end of the class, so we permit use of `-` as a</span> |
| <span class="comment">// regular char (just like we do in the beginning).</span> |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">push</span>(<span class="ident">ClassRange</span>::<span class="ident">one</span>(<span class="ident">start</span>)); |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">push</span>(<span class="ident">ClassRange</span>::<span class="ident">one</span>(<span class="string">'-'</span>)); |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(()); |
| } |
| |
| <span class="comment">// We have a real range. Just need to check to parse literal and</span> |
| <span class="comment">// make sure it's a valid range.</span> |
| <span class="kw">let</span> <span class="ident">end</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">cur</span>() { |
| <span class="string">'\\'</span> <span class="op">=></span> <span class="kw">match</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">parse_escape</span>()) { |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Literal</span> { <span class="ident">chars</span>, .. }) <span class="op">=></span> { |
| <span class="ident">chars</span>[<span class="number">0</span>] |
| } |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">LiteralBytes</span> { <span class="ident">bytes</span>, .. }) <span class="op">=></span> { |
| <span class="ident">bytes</span>[<span class="number">0</span>] <span class="kw">as</span> <span class="ident">char</span> |
| } |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>) <span class="op">=></span> { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidClassEscape</span>(<span class="ident">e</span>))); |
| } |
| <span class="comment">// Because `parse_escape` can never return `LeftParen`.</span> |
| _ <span class="op">=></span> <span class="macro">unreachable</span><span class="macro">!</span>(), |
| }, |
| _ <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="kw">let</span> _ <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">codepoint_to_one_byte</span>(<span class="ident">c</span>)); |
| } |
| <span class="ident">c</span> |
| } |
| }; |
| <span class="kw">if</span> <span class="ident">end</span> <span class="op"><</span> <span class="ident">start</span> { |
| <span class="comment">// e.g., [z-a]</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidClassRange</span> { |
| <span class="ident">start</span>: <span class="ident">start</span>, |
| <span class="ident">end</span>: <span class="ident">end</span>, |
| })); |
| } |
| <span class="ident">class</span>.<span class="ident">ranges</span>.<span class="ident">push</span>(<span class="ident">ClassRange</span>::<span class="ident">new</span>(<span class="ident">start</span>, <span class="ident">end</span>)); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| |
| <span class="comment">// Parses an ASCII class, e.g., `[:alnum:]+`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `[`</span> |
| <span class="comment">// End: `+`</span> |
| <span class="comment">//</span> |
| <span class="comment">// Also supports negation, e.g., `[:^alnum:]`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This parsing routine is distinct from the others in that it doesn't</span> |
| <span class="comment">// actually report any errors. Namely, if it fails, then the parser should</span> |
| <span class="comment">// fall back to parsing a regular class.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This method will only make progress in the parser if it succeeds.</span> |
| <span class="comment">// Otherwise, the input remains where it started.</span> |
| <span class="kw">fn</span> <span class="ident">maybe_parse_ascii</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">CharClass</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">parse</span>(<span class="ident">p</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Parser</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">CharClass</span><span class="op">></span> { |
| <span class="ident">p</span>.<span class="ident">bump</span>(); <span class="comment">// the `[`</span> |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">p</span>.<span class="ident">bump_if</span>(<span class="string">':'</span>) { <span class="kw">return</span> <span class="prelude-val">None</span>; } |
| <span class="kw">let</span> <span class="ident">negate</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">bump_if</span>(<span class="string">'^'</span>); |
| <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">p</span>.<span class="ident">bump_get</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">!=</span> <span class="string">':'</span>) { |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">None</span>, |
| <span class="prelude-val">Some</span>(<span class="ident">name</span>) <span class="op">=></span> <span class="ident">name</span>, |
| }; |
| <span class="kw">if</span> <span class="op">!</span><span class="ident">p</span>.<span class="ident">bump_if</span>(<span class="string">":]"</span>) { <span class="kw">return</span> <span class="prelude-val">None</span>; } |
| <span class="ident">ascii_class</span>(<span class="kw-2">&</span><span class="ident">name</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">cls</span><span class="op">|</span> <span class="ident">p</span>.<span class="ident">class_transform</span>(<span class="ident">negate</span>, <span class="ident">cls</span>)) |
| } |
| <span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">chari</span>; |
| <span class="kw">match</span> <span class="ident">parse</span>(<span class="self">self</span>) { |
| <span class="prelude-val">None</span> <span class="op">=></span> { <span class="self">self</span>.<span class="ident">chari</span> <span class="op">=</span> <span class="ident">start</span>; <span class="prelude-val">None</span> } |
| <span class="ident">result</span> <span class="op">=></span> <span class="ident">result</span>, |
| } |
| } |
| |
| <span class="comment">// Parses a Uncode class name, e.g., `a\pLb`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `L`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="comment">//</span> |
| <span class="comment">// And also, `a\p{Greek}b`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Start: `{`</span> |
| <span class="comment">// End: `b`</span> |
| <span class="comment">//</span> |
| <span class="comment">// `negate` is true when the class name is used with `\P`.</span> |
| <span class="kw">fn</span> <span class="ident">parse_unicode_class</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">neg</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">CharClass</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'{'</span>) { |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">bump_get</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">!=</span> <span class="string">'}'</span>).<span class="ident">unwrap_or</span>(<span class="string">""</span>.<span class="ident">into</span>()); |
| <span class="kw">if</span> <span class="ident">n</span>.<span class="ident">is_empty</span>() <span class="op">||</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">bump_if</span>(<span class="string">'}'</span>) { |
| <span class="comment">// e.g., \p{Greek</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnclosedUnicodeName</span>)); |
| } |
| <span class="ident">n</span> |
| } <span class="kw">else</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">eof</span>() { |
| <span class="comment">// e.g., \p</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnexpectedEscapeEof</span>)); |
| } |
| <span class="self">self</span>.<span class="ident">bump</span>().<span class="ident">to_string</span>() |
| }; |
| <span class="kw">match</span> <span class="ident">unicode_class</span>(<span class="kw-2">&</span><span class="ident">name</span>) { |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedUnicodeClass</span>(<span class="ident">name</span>))), |
| <span class="prelude-val">Some</span>(<span class="ident">cls</span>) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">class_transform</span>(<span class="ident">neg</span>, <span class="ident">cls</span>)) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>)) |
| } |
| } |
| } |
| } |
| |
| <span class="comment">// Parses a perl character class with Unicode support.</span> |
| <span class="comment">//</span> |
| <span class="comment">// `name` must be one of d, s, w, D, S, W. If not, this function panics.</span> |
| <span class="comment">//</span> |
| <span class="comment">// No parser state is changed.</span> |
| <span class="kw">fn</span> <span class="ident">parse_perl_class</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">name</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="kw">use</span> <span class="ident">unicode</span>::<span class="ident">regex</span>::{<span class="ident">PERLD</span>, <span class="ident">PERLS</span>, <span class="ident">PERLW</span>}; |
| <span class="kw">let</span> (<span class="ident">cls</span>, <span class="ident">negate</span>) <span class="op">=</span> <span class="kw">match</span> (<span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span>, <span class="ident">name</span>) { |
| (<span class="bool-val">true</span>, <span class="string">'d'</span>) <span class="op">=></span> (<span class="ident">raw_class_to_expr</span>(<span class="ident">PERLD</span>), <span class="bool-val">false</span>), |
| (<span class="bool-val">true</span>, <span class="string">'D'</span>) <span class="op">=></span> (<span class="ident">raw_class_to_expr</span>(<span class="ident">PERLD</span>), <span class="bool-val">true</span>), |
| (<span class="bool-val">true</span>, <span class="string">'s'</span>) <span class="op">=></span> (<span class="ident">raw_class_to_expr</span>(<span class="ident">PERLS</span>), <span class="bool-val">false</span>), |
| (<span class="bool-val">true</span>, <span class="string">'S'</span>) <span class="op">=></span> (<span class="ident">raw_class_to_expr</span>(<span class="ident">PERLS</span>), <span class="bool-val">true</span>), |
| (<span class="bool-val">true</span>, <span class="string">'w'</span>) <span class="op">=></span> (<span class="ident">raw_class_to_expr</span>(<span class="ident">PERLW</span>), <span class="bool-val">false</span>), |
| (<span class="bool-val">true</span>, <span class="string">'W'</span>) <span class="op">=></span> (<span class="ident">raw_class_to_expr</span>(<span class="ident">PERLW</span>), <span class="bool-val">true</span>), |
| (<span class="bool-val">false</span>, <span class="string">'d'</span>) <span class="op">=></span> (<span class="ident">ascii_class</span>(<span class="string">"digit"</span>).<span class="ident">unwrap</span>(), <span class="bool-val">false</span>), |
| (<span class="bool-val">false</span>, <span class="string">'D'</span>) <span class="op">=></span> (<span class="ident">ascii_class</span>(<span class="string">"digit"</span>).<span class="ident">unwrap</span>(), <span class="bool-val">true</span>), |
| (<span class="bool-val">false</span>, <span class="string">'s'</span>) <span class="op">=></span> (<span class="ident">ascii_class</span>(<span class="string">"space"</span>).<span class="ident">unwrap</span>(), <span class="bool-val">false</span>), |
| (<span class="bool-val">false</span>, <span class="string">'S'</span>) <span class="op">=></span> (<span class="ident">ascii_class</span>(<span class="string">"space"</span>).<span class="ident">unwrap</span>(), <span class="bool-val">true</span>), |
| (<span class="bool-val">false</span>, <span class="string">'w'</span>) <span class="op">=></span> (<span class="ident">ascii_class</span>(<span class="string">"word"</span>).<span class="ident">unwrap</span>(), <span class="bool-val">false</span>), |
| (<span class="bool-val">false</span>, <span class="string">'W'</span>) <span class="op">=></span> (<span class="ident">ascii_class</span>(<span class="string">"word"</span>).<span class="ident">unwrap</span>(), <span class="bool-val">true</span>), |
| _ <span class="op">=></span> <span class="macro">unreachable</span><span class="macro">!</span>(), |
| }; |
| <span class="self">self</span>.<span class="ident">class_transform</span>(<span class="ident">negate</span>, <span class="ident">cls</span>) |
| } |
| |
| <span class="comment">// Always bump to the next input and return the given expression as a</span> |
| <span class="comment">// `Build`.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This is mostly for convenience when the surrounding context implies</span> |
| <span class="comment">// that the next character corresponds to the given expression.</span> |
| <span class="kw">fn</span> <span class="ident">parse_one</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">e</span>: <span class="ident">Expr</span>) <span class="op">-></span> <span class="ident">Build</span> { |
| <span class="self">self</span>.<span class="ident">bump</span>(); |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>) |
| } |
| } |
| |
| <span class="comment">// Auxiliary helper methods.</span> |
| <span class="kw">impl</span> <span class="ident">Parser</span> { |
| <span class="kw">fn</span> <span class="ident">chars</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Chars</span> { |
| <span class="ident">Chars</span>::<span class="ident">new</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">chars</span>[<span class="self">self</span>.<span class="ident">chari</span>..], <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">ignore_space</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">bump</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">char</span> { |
| <span class="kw">let</span> <span class="ident">c</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">cur</span>(); |
| <span class="self">self</span>.<span class="ident">chari</span> <span class="op">=</span> <span class="ident">checkadd</span>(<span class="self">self</span>.<span class="ident">chari</span>, <span class="self">self</span>.<span class="ident">chars</span>().<span class="ident">next_count</span>()); |
| <span class="ident">c</span> |
| } |
| |
| <span class="kw">fn</span> <span class="ident">cur</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">char</span> { <span class="self">self</span>.<span class="ident">chars</span>().<span class="ident">next</span>().<span class="ident">unwrap</span>() } |
| |
| <span class="kw">fn</span> <span class="ident">eof</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">chars</span>().<span class="ident">next</span>().<span class="ident">is_none</span>() } |
| |
| <span class="kw">fn</span> <span class="ident">bump_get</span><span class="op"><</span><span class="ident">B</span>: <span class="ident">Bumpable</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">s</span>: <span class="ident">B</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">match_end</span>(<span class="self">self</span>); |
| <span class="kw">if</span> <span class="ident">n</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="prelude-val">None</span> |
| } <span class="kw">else</span> { |
| <span class="kw">let</span> <span class="ident">end</span> <span class="op">=</span> <span class="ident">checkadd</span>(<span class="self">self</span>.<span class="ident">chari</span>, <span class="ident">n</span>); |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">chars</span>[<span class="self">self</span>.<span class="ident">chari</span>..<span class="ident">end</span>] |
| .<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(); |
| <span class="self">self</span>.<span class="ident">chari</span> <span class="op">=</span> <span class="ident">end</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">s</span>) |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">bump_if</span><span class="op"><</span><span class="ident">B</span>: <span class="ident">Bumpable</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">s</span>: <span class="ident">B</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="ident">s</span>.<span class="ident">match_end</span>(<span class="self">self</span>); |
| <span class="kw">if</span> <span class="ident">n</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="bool-val">false</span> |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">chari</span> <span class="op">=</span> <span class="ident">checkadd</span>(<span class="self">self</span>.<span class="ident">chari</span>, <span class="ident">n</span>); |
| <span class="bool-val">true</span> |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">peek_is</span><span class="op"><</span><span class="ident">B</span>: <span class="ident">Bumpable</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">s</span>: <span class="ident">B</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="ident">s</span>.<span class="ident">match_end</span>(<span class="self">self</span>) <span class="op">></span> <span class="number">0</span> |
| } |
| |
| <span class="kw">fn</span> <span class="ident">err</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">kind</span>: <span class="ident">ErrorKind</span>) <span class="op">-></span> <span class="ident">Error</span> { |
| <span class="self">self</span>.<span class="ident">errat</span>(<span class="self">self</span>.<span class="ident">chari</span>, <span class="ident">kind</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">errat</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pos</span>: <span class="ident">usize</span>, <span class="ident">kind</span>: <span class="ident">ErrorKind</span>) <span class="op">-></span> <span class="ident">Error</span> { |
| <span class="ident">Error</span> { <span class="ident">pos</span>: <span class="ident">pos</span>, <span class="ident">surround</span>: <span class="self">self</span>.<span class="ident">windowat</span>(<span class="ident">pos</span>), <span class="ident">kind</span>: <span class="ident">kind</span> } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">windowat</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pos</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">String</span> { |
| <span class="kw">let</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">max</span>(<span class="number">5</span>, <span class="ident">pos</span>) <span class="op">-</span> <span class="number">5</span>; |
| <span class="kw">let</span> <span class="ident">e</span> <span class="op">=</span> <span class="ident">min</span>(<span class="self">self</span>.<span class="ident">chars</span>.<span class="ident">len</span>(), <span class="ident">checkadd</span>(<span class="ident">pos</span>, <span class="number">5</span>)); |
| <span class="self">self</span>.<span class="ident">chars</span>[<span class="ident">s</span>..<span class="ident">e</span>].<span class="ident">iter</span>().<span class="ident">cloned</span>().<span class="ident">collect</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">pop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">expected</span>: <span class="ident">ErrorKind</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Expr</span><span class="op">></span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>() { |
| <span class="prelude-val">None</span> <span class="op">|</span> <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span>{..}) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">expected</span>)), |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>)) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">e</span>), |
| } |
| } |
| |
| <span class="comment">// If the current context calls for case insensitivity, then apply</span> |
| <span class="comment">// case folding. Similarly, if `negate` is `true`, then negate the</span> |
| <span class="comment">// class. (Negation always proceeds case folding.)</span> |
| <span class="kw">fn</span> <span class="ident">class_transform</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">negate</span>: <span class="ident">bool</span>, <span class="kw-2">mut</span> <span class="ident">cls</span>: <span class="ident">CharClass</span>) <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">casei</span> { |
| <span class="ident">cls</span> <span class="op">=</span> <span class="ident">cls</span>.<span class="ident">case_fold</span>(); |
| } |
| <span class="kw">if</span> <span class="ident">negate</span> { |
| <span class="ident">cls</span> <span class="op">=</span> <span class="ident">cls</span>.<span class="ident">negate</span>(); |
| } |
| <span class="ident">cls</span> |
| } |
| |
| <span class="comment">// Translates a Unicode codepoint into a single UTF-8 byte, and returns an</span> |
| <span class="comment">// error if it's not possible.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This will panic if self.flags.unicode == true.</span> |
| <span class="kw">fn</span> <span class="ident">codepoint_to_one_byte</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">c</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span> { |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span>); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">c</span>.<span class="ident">to_string</span>().<span class="ident">as_bytes</span>().<span class="ident">to_owned</span>(); |
| <span class="kw">if</span> <span class="ident">bytes</span>.<span class="ident">len</span>() <span class="op">></span> <span class="number">1</span> { |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>)); |
| } |
| <span class="prelude-val">Ok</span>(<span class="ident">bytes</span>[<span class="number">0</span>]) |
| } |
| |
| <span class="comment">// Creates a new byte literal from a single byte.</span> |
| <span class="comment">//</span> |
| <span class="comment">// If the given number can't fit into a single byte, then it is assumed</span> |
| <span class="comment">// to be a Unicode codepoint and an error is returned.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This should only be called when the bytes flag is enabled.</span> |
| <span class="kw">fn</span> <span class="ident">u32_to_one_byte</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">b</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span>); |
| <span class="kw">if</span> <span class="ident">b</span> <span class="op">></span> <span class="ident">u8</span>::<span class="ident">MAX</span> <span class="kw">as</span> <span class="ident">u32</span> { |
| <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>)) |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">allow_bytes</span> <span class="op">&&</span> <span class="ident">b</span> <span class="op">></span> <span class="number">0x7F</span> { |
| <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>)) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">LiteralBytes</span> { |
| <span class="ident">bytes</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">b</span> <span class="kw">as</span> <span class="ident">u8</span>], |
| <span class="ident">casei</span>: <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">casei</span>, |
| })) |
| } |
| } |
| |
| <span class="comment">// Creates a new literal expr from a Unicode codepoint.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Creates a byte literal if the `bytes` flag is set.</span> |
| <span class="kw">fn</span> <span class="ident">lit</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">c</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="kw">if</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">unicode</span> { |
| <span class="ident">Expr</span>::<span class="ident">Literal</span> { |
| <span class="ident">chars</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">c</span>], |
| <span class="ident">casei</span>: <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">casei</span>, |
| } |
| } <span class="kw">else</span> { |
| <span class="ident">Expr</span>::<span class="ident">LiteralBytes</span> { |
| <span class="ident">bytes</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">codepoint_to_one_byte</span>(<span class="ident">c</span>))], |
| <span class="ident">casei</span>: <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">casei</span>, |
| } |
| })) |
| } |
| } |
| |
| <span class="kw">struct</span> <span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { |
| <span class="ident">chars</span>: <span class="kw-2">&</span><span class="lifetime">'a</span> [<span class="ident">char</span>], |
| <span class="ident">cur</span>: <span class="ident">usize</span>, |
| <span class="ident">ignore_space</span>: <span class="ident">bool</span>, |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Iterator</span> <span class="kw">for</span> <span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</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="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></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="op">!</span><span class="self">self</span>.<span class="ident">ignore_space</span> { |
| <span class="kw">let</span> <span class="ident">x</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">c</span>(); |
| <span class="self">self</span>.<span class="ident">advance</span>(); |
| <span class="kw">return</span> <span class="ident">x</span>; |
| } |
| <span class="kw">while</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">c</span>() { |
| <span class="self">self</span>.<span class="ident">advance</span>(); |
| <span class="kw">match</span> <span class="ident">c</span> { |
| <span class="string">'\\'</span> <span class="op">=></span> <span class="kw">return</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">c</span>() { |
| <span class="prelude-val">Some</span>(<span class="string">'#'</span>) <span class="op">=></span> {<span class="self">self</span>.<span class="ident">advance</span>(); <span class="prelude-val">Some</span>(<span class="string">'#'</span>)} |
| _ <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="string">'\\'</span>) |
| }, |
| <span class="string">'#'</span> <span class="op">=></span> <span class="kw">loop</span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">c</span>() { |
| <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">advance</span>(); |
| <span class="kw">if</span> <span class="ident">c</span> <span class="op">==</span> <span class="string">'\n'</span> { |
| <span class="kw">break</span>; |
| } |
| }, |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">None</span> |
| } |
| }, |
| _ <span class="op">=></span> <span class="kw">if</span> <span class="op">!</span><span class="ident">c</span>.<span class="ident">is_whitespace</span>() {<span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>);} |
| } |
| } |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Chars</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> { |
| <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">chars</span>: <span class="kw-2">&</span>[<span class="ident">char</span>], <span class="ident">ignore_space</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="ident">Chars</span> { |
| <span class="ident">Chars</span> { |
| <span class="ident">chars</span>: <span class="ident">chars</span>, |
| <span class="ident">cur</span>: <span class="number">0</span>, |
| <span class="ident">ignore_space</span>: <span class="ident">ignore_space</span>, |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">c</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">char</span><span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">chars</span>.<span class="ident">get</span>(<span class="self">self</span>.<span class="ident">cur</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">advance</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { |
| <span class="self">self</span>.<span class="ident">cur</span> <span class="op">=</span> <span class="ident">checkadd</span>(<span class="self">self</span>.<span class="ident">cur</span>, <span class="number">1</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">next_count</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="self">self</span>.<span class="ident">next</span>(); |
| <span class="self">self</span>.<span class="ident">cur</span> |
| } |
| } |
| |
| <span class="comment">// Auxiliary methods for manipulating the expression stack.</span> |
| <span class="kw">impl</span> <span class="ident">Parser</span> { |
| <span class="comment">// Called whenever an alternate (`|`) is found.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This pops the expression stack until:</span> |
| <span class="comment">//</span> |
| <span class="comment">// 1. The stack is empty. Pushes an alternation with one arm.</span> |
| <span class="comment">// 2. An opening parenthesis is found. Leave the parenthesis</span> |
| <span class="comment">// on the stack and push an alternation with one arm.</span> |
| <span class="comment">// 3. An alternate (`|`) is found. Pop the existing alternation,</span> |
| <span class="comment">// add an arm and push the modified alternation.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Each "arm" in the above corresponds to the concatenation of all</span> |
| <span class="comment">// popped expressions.</span> |
| <span class="comment">//</span> |
| <span class="comment">// In the first two cases, the stack is left in an invalid state</span> |
| <span class="comment">// because an alternation with one arm is not allowed. This</span> |
| <span class="comment">// particular state will be detected by `finish_concat` and an</span> |
| <span class="comment">// error will be reported.</span> |
| <span class="comment">//</span> |
| <span class="comment">// In none of the cases is an empty arm allowed. If an empty arm</span> |
| <span class="comment">// is found, an error is reported.</span> |
| <span class="kw">fn</span> <span class="ident">alternate</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Build</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">concat</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[]; |
| <span class="kw">let</span> <span class="ident">alts</span> <span class="op">=</span> <span class="op">|</span><span class="ident">es</span><span class="op">|</span> <span class="prelude-val">Ok</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="ident">es</span>))); |
| <span class="kw">loop</span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>() { |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">concat</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// e.g., |a</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>)); |
| } |
| <span class="kw">return</span> <span class="ident">alts</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">rev_concat</span>(<span class="ident">concat</span>)]); |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">e</span> @ <span class="ident">Build</span>::<span class="ident">LeftParen</span>{..}) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">concat</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// e.g., (|a)</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>)); |
| } |
| <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">push</span>(<span class="ident">e</span>); |
| <span class="kw">return</span> <span class="ident">alts</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">rev_concat</span>(<span class="ident">concat</span>)]); |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="kw-2">mut</span> <span class="ident">es</span>))) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">concat</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// e.g., a||</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>)); |
| } |
| <span class="ident">es</span>.<span class="ident">push</span>(<span class="ident">rev_concat</span>(<span class="ident">concat</span>)); |
| <span class="kw">return</span> <span class="ident">alts</span>(<span class="ident">es</span>); |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>)) <span class="op">=></span> { <span class="ident">concat</span>.<span class="ident">push</span>(<span class="ident">e</span>); } |
| } |
| } |
| } |
| |
| <span class="comment">// Called whenever a closing parenthesis (`)`) is found.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This pops the expression stack until:</span> |
| <span class="comment">//</span> |
| <span class="comment">// 1. The stack is empty. An error is reported because this</span> |
| <span class="comment">// indicates an unopened parenthesis.</span> |
| <span class="comment">// 2. An opening parenthesis is found. Pop the opening parenthesis</span> |
| <span class="comment">// and push a `Group` expression.</span> |
| <span class="comment">// 3. An alternate (`|`) is found. Pop the existing alternation</span> |
| <span class="comment">// and an arm to it in place. Pop one more item from the stack.</span> |
| <span class="comment">// If the stack was empty, then report an unopened parenthesis</span> |
| <span class="comment">// error, otherwise assume it is an opening parenthesis and</span> |
| <span class="comment">// push a `Group` expression with the popped alternation.</span> |
| <span class="comment">// (We can assume this is an opening parenthesis because an</span> |
| <span class="comment">// alternation either corresponds to the entire Regex or it</span> |
| <span class="comment">// corresponds to an entire group. This is guaranteed by the</span> |
| <span class="comment">// `alternate` method.)</span> |
| <span class="comment">//</span> |
| <span class="comment">// Each "arm" in the above corresponds to the concatenation of all</span> |
| <span class="comment">// popped expressions.</span> |
| <span class="comment">//</span> |
| <span class="comment">// Empty arms nor empty groups are allowed.</span> |
| <span class="kw">fn</span> <span class="ident">close_paren</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">Flags</span>, <span class="ident">Build</span>)<span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">concat</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[]; |
| <span class="kw">loop</span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>() { |
| <span class="comment">// e.g., )</span> |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnopenedParen</span>)), |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span> { <span class="ident">i</span>, <span class="ident">name</span>, <span class="ident">old_flags</span>, .. }) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">concat</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// e.g., ()</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyGroup</span>)); |
| } |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>((<span class="ident">old_flags</span>, <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">rev_concat</span>(<span class="ident">concat</span>)), |
| <span class="ident">i</span>: <span class="ident">i</span>, |
| <span class="ident">name</span>: <span class="ident">name</span>, |
| }))); |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="kw-2">mut</span> <span class="ident">es</span>))) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">concat</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// e.g., (a|)</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>)); |
| } |
| <span class="ident">es</span>.<span class="ident">push</span>(<span class="ident">rev_concat</span>(<span class="ident">concat</span>)); |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>() { |
| <span class="comment">// e.g., a|b)</span> |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">UnopenedParen</span>)), |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(_)) <span class="op">=></span> <span class="macro">unreachable</span><span class="macro">!</span>(), |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span> { <span class="ident">i</span>, <span class="ident">name</span>, <span class="ident">old_flags</span>, .. }) <span class="op">=></span> { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>((<span class="ident">old_flags</span>, <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="ident">es</span>)), |
| <span class="ident">i</span>: <span class="ident">i</span>, |
| <span class="ident">name</span>: <span class="ident">name</span>, |
| }))); |
| } |
| } |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>)) <span class="op">=></span> { <span class="ident">concat</span>.<span class="ident">push</span>(<span class="ident">e</span>); } |
| } |
| } |
| } |
| |
| <span class="comment">// Called only when the parser reaches the end of input.</span> |
| <span class="comment">//</span> |
| <span class="comment">// This pops the expression stack until:</span> |
| <span class="comment">//</span> |
| <span class="comment">// 1. The stack is empty. Return concatenation of popped</span> |
| <span class="comment">// expressions. This concatenation may be empty!</span> |
| <span class="comment">// 2. An alternation is found. Pop the alternation and push</span> |
| <span class="comment">// a new arm. Return the alternation as the entire Regex.</span> |
| <span class="comment">// After this, the stack must be empty, or else there is</span> |
| <span class="comment">// an unclosed paren.</span> |
| <span class="comment">//</span> |
| <span class="comment">// If an opening parenthesis is popped, then an error is</span> |
| <span class="comment">// returned since it indicates an unclosed parenthesis.</span> |
| <span class="kw">fn</span> <span class="ident">finish_concat</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Expr</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">concat</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[]; |
| <span class="kw">loop</span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>() { |
| <span class="prelude-val">None</span> <span class="op">=></span> { <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">rev_concat</span>(<span class="ident">concat</span>)); } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span>{ <span class="ident">chari</span>, ..}) <span class="op">=></span> { |
| <span class="comment">// e.g., a(b</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">errat</span>(<span class="ident">chari</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedParen</span>)); |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="kw-2">mut</span> <span class="ident">es</span>))) <span class="op">=></span> { |
| <span class="kw">if</span> <span class="ident">concat</span>.<span class="ident">is_empty</span>() { |
| <span class="comment">// e.g., a|</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">err</span>(<span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>)); |
| } |
| <span class="ident">es</span>.<span class="ident">push</span>(<span class="ident">rev_concat</span>(<span class="ident">concat</span>)); |
| <span class="comment">// Make sure there are no opening parens remaining.</span> |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">stack</span>.<span class="ident">pop</span>() { |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="ident">es</span>)), |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">LeftParen</span>{ <span class="ident">chari</span>, ..}) <span class="op">=></span> { |
| <span class="comment">// e.g., (a|b</span> |
| <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="self">self</span>.<span class="ident">errat</span>( |
| <span class="ident">chari</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedParen</span>)); |
| } |
| <span class="ident">e</span> <span class="op">=></span> <span class="macro">unreachable</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">e</span>), |
| } |
| } |
| <span class="prelude-val">Some</span>(<span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">e</span>)) <span class="op">=></span> { <span class="ident">concat</span>.<span class="ident">push</span>(<span class="ident">e</span>); } |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Build</span> { |
| <span class="kw">fn</span> <span class="ident">is_empty</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> { |
| <span class="ident">Build</span>::<span class="ident">Expr</span>(<span class="ident">Expr</span>::<span class="ident">Empty</span>) <span class="op">=></span> <span class="bool-val">true</span>, |
| _ <span class="op">=></span> <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="comment">// Make it ergonomic to conditionally bump the parser.</span> |
| <span class="comment">// i.e., `bump_if('a')` or `bump_if("abc")`.</span> |
| <span class="kw">trait</span> <span class="ident">Bumpable</span> { |
| <span class="kw">fn</span> <span class="ident">match_end</span>(<span class="self">self</span>, <span class="ident">p</span>: <span class="kw-2">&</span><span class="ident">Parser</span>) <span class="op">-></span> <span class="ident">usize</span>; |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Bumpable</span> <span class="kw">for</span> <span class="ident">char</span> { |
| <span class="kw">fn</span> <span class="ident">match_end</span>(<span class="self">self</span>, <span class="ident">p</span>: <span class="kw-2">&</span><span class="ident">Parser</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">chars</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">chars</span>(); |
| <span class="kw">if</span> <span class="ident">chars</span>.<span class="ident">next</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">c</span><span class="op">|</span> <span class="ident">c</span> <span class="op">==</span> <span class="self">self</span>).<span class="ident">unwrap_or</span>(<span class="bool-val">false</span>) { |
| <span class="ident">chars</span>.<span class="ident">cur</span> |
| } <span class="kw">else</span> { |
| <span class="number">0</span> |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Bumpable</span> <span class="kw">for</span> <span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">str</span> { |
| <span class="kw">fn</span> <span class="ident">match_end</span>(<span class="self">self</span>, <span class="ident">p</span>: <span class="kw-2">&</span><span class="ident">Parser</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">search</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">chars</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">rest</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">chars</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">count</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">loop</span> { |
| <span class="kw">match</span> (<span class="ident">rest</span>.<span class="ident">next</span>(), <span class="ident">search</span>.<span class="ident">next</span>()) { |
| (<span class="prelude-val">Some</span>(<span class="ident">c1</span>), <span class="prelude-val">Some</span>(<span class="ident">c2</span>)) <span class="kw">if</span> <span class="ident">c1</span> <span class="op">==</span> <span class="ident">c2</span> <span class="op">=></span> <span class="ident">count</span> <span class="op">=</span> <span class="ident">rest</span>.<span class="ident">cur</span>, |
| (_, <span class="prelude-val">None</span>) <span class="op">=></span> <span class="kw">return</span> <span class="ident">count</span>, |
| _ <span class="op">=></span> <span class="kw">return</span> <span class="number">0</span>, |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">F</span>: <span class="ident">FnMut</span>(<span class="ident">char</span>) <span class="op">-></span> <span class="ident">bool</span><span class="op">></span> <span class="ident">Bumpable</span> <span class="kw">for</span> <span class="ident">F</span> { |
| <span class="kw">fn</span> <span class="ident">match_end</span>(<span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">p</span>: <span class="kw-2">&</span><span class="ident">Parser</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">chars</span> <span class="op">=</span> <span class="ident">p</span>.<span class="ident">chars</span>(); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">count</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">while</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">c</span>) <span class="op">=</span> <span class="ident">chars</span>.<span class="ident">next</span>() { |
| <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>(<span class="ident">c</span>) { |
| <span class="kw">break</span> |
| } |
| <span class="ident">count</span> <span class="op">=</span> <span class="ident">chars</span>.<span class="ident">cur</span>; |
| } |
| <span class="ident">count</span> |
| } |
| } |
| |
| <span class="comment">// Turn a sequence of expressions into a concatenation.</span> |
| <span class="comment">// This only uses `Concat` if there are 2 or more expressions.</span> |
| <span class="kw">fn</span> <span class="ident">rev_concat</span>(<span class="kw-2">mut</span> <span class="ident">exprs</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Expr</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Expr</span> { |
| <span class="kw">if</span> <span class="ident">exprs</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">0</span> { |
| <span class="ident">Expr</span>::<span class="ident">Empty</span> |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">exprs</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> { |
| <span class="ident">exprs</span>.<span class="ident">pop</span>().<span class="ident">unwrap</span>() |
| } <span class="kw">else</span> { |
| <span class="ident">exprs</span>.<span class="ident">reverse</span>(); |
| <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="ident">exprs</span>) |
| } |
| } |
| |
| <span class="comment">// Returns true if and only if the given character is allowed in a capture</span> |
| <span class="comment">// name. Note that the first char of a capture name must not be numeric.</span> |
| <span class="kw">fn</span> <span class="ident">is_valid_capture_char</span>(<span class="ident">c</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="ident">c</span> <span class="op">==</span> <span class="string">'_'</span> <span class="op">||</span> (<span class="ident">c</span> <span class="op">>=</span> <span class="string">'0'</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op"><=</span> <span class="string">'9'</span>) |
| <span class="op">||</span> (<span class="ident">c</span> <span class="op">>=</span> <span class="string">'a'</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op"><=</span> <span class="string">'z'</span>) <span class="op">||</span> (<span class="ident">c</span> <span class="op">>=</span> <span class="string">'A'</span> <span class="op">&&</span> <span class="ident">c</span> <span class="op"><=</span> <span class="string">'Z'</span>) |
| } |
| |
| <span class="doccomment">/// Returns true if the give character has significance in a regex.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_punct</span>(<span class="ident">c</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="kw">match</span> <span class="ident">c</span> { |
| <span class="string">'\\'</span> <span class="op">|</span> <span class="string">'.'</span> <span class="op">|</span> <span class="string">'+'</span> <span class="op">|</span> <span class="string">'*'</span> <span class="op">|</span> <span class="string">'?'</span> <span class="op">|</span> <span class="string">'('</span> <span class="op">|</span> <span class="string">')'</span> <span class="op">|</span> <span class="string">'|'</span> <span class="op">|</span> |
| <span class="string">'['</span> <span class="op">|</span> <span class="string">']'</span> <span class="op">|</span> <span class="string">'{'</span> <span class="op">|</span> <span class="string">'}'</span> <span class="op">|</span> <span class="string">'^'</span> <span class="op">|</span> <span class="string">'$'</span> <span class="op">|</span> <span class="string">'#'</span> <span class="op">=></span> <span class="bool-val">true</span>, |
| _ <span class="op">=></span> <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">checkadd</span>(<span class="ident">x</span>: <span class="ident">usize</span>, <span class="ident">y</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="ident">x</span>.<span class="ident">checked_add</span>(<span class="ident">y</span>).<span class="ident">expect</span>(<span class="string">"regex length overflow"</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">unicode_class</span>(<span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">CharClass</span><span class="op">></span> { |
| <span class="ident">UNICODE_CLASSES</span>.<span class="ident">binary_search_by</span>(<span class="op">|</span><span class="kw-2">&</span>(<span class="ident">s</span>, _)<span class="op">|</span> <span class="ident">s</span>.<span class="ident">cmp</span>(<span class="ident">name</span>)).<span class="ident">ok</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">i</span><span class="op">|</span> { |
| <span class="ident">raw_class_to_expr</span>(<span class="ident">UNICODE_CLASSES</span>[<span class="ident">i</span>].<span class="number">1</span>) |
| }) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">ascii_class</span>(<span class="ident">name</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">CharClass</span><span class="op">></span> { |
| <span class="ident">ASCII_CLASSES</span>.<span class="ident">binary_search_by</span>(<span class="op">|</span><span class="kw-2">&</span>(<span class="ident">s</span>, _)<span class="op">|</span> <span class="ident">s</span>.<span class="ident">cmp</span>(<span class="ident">name</span>)).<span class="ident">ok</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">i</span><span class="op">|</span> { |
| <span class="ident">raw_class_to_expr</span>(<span class="ident">ASCII_CLASSES</span>[<span class="ident">i</span>].<span class="number">1</span>) |
| }) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">raw_class_to_expr</span>(<span class="ident">raw</span>: <span class="kw-2">&</span>[(<span class="ident">char</span>, <span class="ident">char</span>)]) <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="kw">let</span> <span class="ident">range</span> <span class="op">=</span> <span class="op">|</span><span class="kw-2">&</span>(<span class="ident">s</span>, <span class="ident">e</span>)<span class="op">|</span> <span class="ident">ClassRange</span> { <span class="ident">start</span>: <span class="ident">s</span>, <span class="ident">end</span>: <span class="ident">e</span> }; |
| <span class="ident">CharClass</span>::<span class="ident">new</span>(<span class="ident">raw</span>.<span class="ident">iter</span>().<span class="ident">map</span>(<span class="ident">range</span>).<span class="ident">collect</span>()) |
| } |
| |
| <span class="kw">type</span> <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'static</span> [(<span class="ident">char</span>, <span class="ident">char</span>)]; |
| <span class="kw">type</span> <span class="ident">NamedClasses</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'static</span> [(<span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span>, <span class="ident">Class</span>)]; |
| |
| <span class="kw">const</span> <span class="ident">ASCII_CLASSES</span>: <span class="ident">NamedClasses</span> <span class="op">=</span> <span class="kw-2">&</span>[ |
| <span class="comment">// Classes must be in alphabetical order so that bsearch works.</span> |
| <span class="comment">// [:alnum:] alphanumeric (== [0-9A-Za-z])</span> |
| <span class="comment">// [:alpha:] alphabetic (== [A-Za-z])</span> |
| <span class="comment">// [:ascii:] ASCII (== [\x00-\x7F])</span> |
| <span class="comment">// [:blank:] blank (== [\t ])</span> |
| <span class="comment">// [:cntrl:] control (== [\x00-\x1F\x7F])</span> |
| <span class="comment">// [:digit:] digits (== [0-9])</span> |
| <span class="comment">// [:graph:] graphical (== [!-~])</span> |
| <span class="comment">// [:lower:] lower case (== [a-z])</span> |
| <span class="comment">// [:print:] printable (== [ -~] == [ [:graph:]])</span> |
| <span class="comment">// [:punct:] punctuation (== [!-/:-@[-`{-~])</span> |
| <span class="comment">// [:space:] whitespace (== [\t\n\v\f\r ])</span> |
| <span class="comment">// [:upper:] upper case (== [A-Z])</span> |
| <span class="comment">// [:word:] word characters (== [0-9A-Za-z_])</span> |
| <span class="comment">// [:xdigit:] hex digit (== [0-9A-Fa-f])</span> |
| <span class="comment">// Taken from: http://golang.org/pkg/regex/syntax/</span> |
| (<span class="string">"alnum"</span>, <span class="kw-2">&</span><span class="ident">ALNUM</span>), |
| (<span class="string">"alpha"</span>, <span class="kw-2">&</span><span class="ident">ALPHA</span>), |
| (<span class="string">"ascii"</span>, <span class="kw-2">&</span><span class="ident">ASCII</span>), |
| (<span class="string">"blank"</span>, <span class="kw-2">&</span><span class="ident">BLANK</span>), |
| (<span class="string">"cntrl"</span>, <span class="kw-2">&</span><span class="ident">CNTRL</span>), |
| (<span class="string">"digit"</span>, <span class="kw-2">&</span><span class="ident">DIGIT</span>), |
| (<span class="string">"graph"</span>, <span class="kw-2">&</span><span class="ident">GRAPH</span>), |
| (<span class="string">"lower"</span>, <span class="kw-2">&</span><span class="ident">LOWER</span>), |
| (<span class="string">"print"</span>, <span class="kw-2">&</span><span class="ident">PRINT</span>), |
| (<span class="string">"punct"</span>, <span class="kw-2">&</span><span class="ident">PUNCT</span>), |
| (<span class="string">"space"</span>, <span class="kw-2">&</span><span class="ident">SPACE</span>), |
| (<span class="string">"upper"</span>, <span class="kw-2">&</span><span class="ident">UPPER</span>), |
| (<span class="string">"word"</span>, <span class="kw-2">&</span><span class="ident">WORD</span>), |
| (<span class="string">"xdigit"</span>, <span class="kw-2">&</span><span class="ident">XDIGIT</span>), |
| ]; |
| |
| <span class="kw">const</span> <span class="ident">ALNUM</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'0'</span>, <span class="string">'9'</span>), (<span class="string">'A'</span>, <span class="string">'Z'</span>), (<span class="string">'a'</span>, <span class="string">'z'</span>)]; |
| <span class="kw">const</span> <span class="ident">ALPHA</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>), (<span class="string">'a'</span>, <span class="string">'z'</span>)]; |
| <span class="kw">const</span> <span class="ident">ASCII</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'\x00'</span>, <span class="string">'\x7F'</span>)]; |
| <span class="kw">const</span> <span class="ident">BLANK</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">' '</span>, <span class="string">' '</span>), (<span class="string">'\t'</span>, <span class="string">'\t'</span>)]; |
| <span class="kw">const</span> <span class="ident">CNTRL</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'\x00'</span>, <span class="string">'\x1F'</span>), (<span class="string">'\x7F'</span>, <span class="string">'\x7F'</span>)]; |
| <span class="kw">const</span> <span class="ident">DIGIT</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'0'</span>, <span class="string">'9'</span>)]; |
| <span class="kw">const</span> <span class="ident">GRAPH</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'!'</span>, <span class="string">'~'</span>)]; |
| <span class="kw">const</span> <span class="ident">LOWER</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'z'</span>)]; |
| <span class="kw">const</span> <span class="ident">PRINT</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">' '</span>, <span class="string">'~'</span>)]; |
| <span class="kw">const</span> <span class="ident">PUNCT</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'!'</span>, <span class="string">'/'</span>), (<span class="string">':'</span>, <span class="string">'@'</span>), (<span class="string">'['</span>, <span class="string">'`'</span>), (<span class="string">'{'</span>, <span class="string">'~'</span>)]; |
| <span class="kw">const</span> <span class="ident">SPACE</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'\t'</span>, <span class="string">'\t'</span>), (<span class="string">'\n'</span>, <span class="string">'\n'</span>), (<span class="string">'\x0B'</span>, <span class="string">'\x0B'</span>), |
| (<span class="string">'\x0C'</span>, <span class="string">'\x0C'</span>), (<span class="string">'\r'</span>, <span class="string">'\r'</span>), (<span class="string">' '</span>, <span class="string">' '</span>)]; |
| <span class="kw">const</span> <span class="ident">UPPER</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'A'</span>, <span class="string">'Z'</span>)]; |
| <span class="kw">const</span> <span class="ident">WORD</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'0'</span>, <span class="string">'9'</span>), (<span class="string">'A'</span>, <span class="string">'Z'</span>), (<span class="string">'_'</span>, <span class="string">'_'</span>), (<span class="string">'a'</span>, <span class="string">'z'</span>)]; |
| <span class="kw">const</span> <span class="ident">XDIGIT</span>: <span class="ident">Class</span> <span class="op">=</span> <span class="kw-2">&</span>[(<span class="string">'0'</span>, <span class="string">'9'</span>), (<span class="string">'A'</span>, <span class="string">'F'</span>), (<span class="string">'a'</span>, <span class="string">'f'</span>)]; |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> |
| <span class="kw">mod</span> <span class="ident">tests</span> { |
| <span class="kw">use</span> { |
| <span class="ident">CharClass</span>, <span class="ident">ClassRange</span>, <span class="ident">ByteClass</span>, <span class="ident">ByteRange</span>, |
| <span class="ident">Expr</span>, <span class="ident">Repeater</span>, |
| <span class="ident">ErrorKind</span>, |
| }; |
| <span class="kw">use</span> <span class="ident">unicode</span>::<span class="ident">regex</span>::{<span class="ident">PERLD</span>, <span class="ident">PERLS</span>, <span class="ident">PERLW</span>}; |
| <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">LOWER</span>, <span class="ident">UPPER</span>, <span class="ident">WORD</span>, <span class="ident">Flags</span>, <span class="ident">Parser</span>, <span class="ident">ascii_class</span>}; |
| |
| <span class="kw">static</span> <span class="ident">YI</span>: <span class="kw-2">&</span><span class="lifetime">'static</span> [(<span class="ident">char</span>, <span class="ident">char</span>)] <span class="op">=</span> <span class="kw-2">&</span>[ |
| (<span class="string">'\u{a000}'</span>, <span class="string">'\u{a48c}'</span>), (<span class="string">'\u{a490}'</span>, <span class="string">'\u{a4c6}'</span>), |
| ]; |
| |
| <span class="kw">fn</span> <span class="ident">p</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">Expr</span> { <span class="ident">Parser</span>::<span class="ident">parse</span>(<span class="ident">s</span>, <span class="ident">Flags</span>::<span class="ident">default</span>()).<span class="ident">unwrap</span>() } |
| <span class="kw">fn</span> <span class="ident">pf</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">flags</span>: <span class="ident">Flags</span>) <span class="op">-></span> <span class="ident">Expr</span> { <span class="ident">Parser</span>::<span class="ident">parse</span>(<span class="ident">s</span>, <span class="ident">flags</span>).<span class="ident">unwrap</span>() } |
| <span class="kw">fn</span> <span class="ident">lit</span>(<span class="ident">c</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="ident">Expr</span> { <span class="ident">Expr</span>::<span class="ident">Literal</span> { <span class="ident">chars</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">c</span>], <span class="ident">casei</span>: <span class="bool-val">false</span> } } |
| <span class="kw">fn</span> <span class="ident">liti</span>(<span class="ident">c</span>: <span class="ident">char</span>) <span class="op">-></span> <span class="ident">Expr</span> { <span class="ident">Expr</span>::<span class="ident">Literal</span> { <span class="ident">chars</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">c</span>], <span class="ident">casei</span>: <span class="bool-val">true</span> } } |
| <span class="kw">fn</span> <span class="ident">b</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>(<span class="ident">v</span>: <span class="ident">T</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">v</span>) } |
| <span class="kw">fn</span> <span class="ident">c</span>(<span class="ident">es</span>: <span class="kw-2">&</span>[<span class="ident">Expr</span>]) <span class="op">-></span> <span class="ident">Expr</span> { <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="ident">es</span>.<span class="ident">to_vec</span>()) } |
| |
| <span class="kw">fn</span> <span class="ident">pb</span>(<span class="ident">s</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">Expr</span> { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">allow_bytes</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="ident">Parser</span>::<span class="ident">parse</span>(<span class="ident">s</span>, <span class="ident">flags</span>).<span class="ident">unwrap</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">blit</span>(<span class="ident">b</span>: <span class="ident">u8</span>) <span class="op">-></span> <span class="ident">Expr</span> { |
| <span class="ident">Expr</span>::<span class="ident">LiteralBytes</span> { |
| <span class="ident">bytes</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">b</span>], |
| <span class="ident">casei</span>: <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">bliti</span>(<span class="ident">b</span>: <span class="ident">u8</span>) <span class="op">-></span> <span class="ident">Expr</span> { |
| <span class="ident">Expr</span>::<span class="ident">LiteralBytes</span> { |
| <span class="ident">bytes</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">b</span>], |
| <span class="ident">casei</span>: <span class="bool-val">true</span>, |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">class</span>(<span class="ident">ranges</span>: <span class="kw-2">&</span>[(<span class="ident">char</span>, <span class="ident">char</span>)]) <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="kw">let</span> <span class="ident">ranges</span> <span class="op">=</span> <span class="ident">ranges</span>.<span class="ident">iter</span>().<span class="ident">cloned</span>() |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">c1</span>, <span class="ident">c2</span>)<span class="op">|</span> <span class="ident">ClassRange</span>::<span class="ident">new</span>(<span class="ident">c1</span>, <span class="ident">c2</span>)).<span class="ident">collect</span>(); |
| <span class="ident">CharClass</span>::<span class="ident">new</span>(<span class="ident">ranges</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">classes</span>(<span class="ident">classes</span>: <span class="kw-2">&</span>[<span class="kw-2">&</span>[(<span class="ident">char</span>, <span class="ident">char</span>)]]) <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cls</span> <span class="op">=</span> <span class="ident">CharClass</span>::<span class="ident">empty</span>(); |
| <span class="kw">for</span> <span class="kw-2">&</span><span class="ident">ranges</span> <span class="kw">in</span> <span class="ident">classes</span> { |
| <span class="ident">cls</span>.<span class="ident">ranges</span>.<span class="ident">extend</span>(<span class="ident">class</span>(<span class="ident">ranges</span>)); |
| } |
| <span class="ident">cls</span>.<span class="ident">canonicalize</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">bclass</span>(<span class="ident">ranges</span>: <span class="kw-2">&</span>[(<span class="ident">u8</span>, <span class="ident">u8</span>)]) <span class="op">-></span> <span class="ident">ByteClass</span> { |
| <span class="kw">let</span> <span class="ident">ranges</span> <span class="op">=</span> <span class="ident">ranges</span>.<span class="ident">iter</span>().<span class="ident">cloned</span>() |
| .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">c1</span>, <span class="ident">c2</span>)<span class="op">|</span> <span class="ident">ByteRange</span>::<span class="ident">new</span>(<span class="ident">c1</span>, <span class="ident">c2</span>)).<span class="ident">collect</span>(); |
| <span class="ident">ByteClass</span>::<span class="ident">new</span>(<span class="ident">ranges</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">asciid</span>() <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="ident">ascii_class</span>(<span class="string">"digit"</span>).<span class="ident">unwrap</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">asciis</span>() <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="ident">ascii_class</span>(<span class="string">"space"</span>).<span class="ident">unwrap</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">asciiw</span>() <span class="op">-></span> <span class="ident">CharClass</span> { |
| <span class="ident">ascii_class</span>(<span class="string">"word"</span>).<span class="ident">unwrap</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">asciid_bytes</span>() <span class="op">-></span> <span class="ident">ByteClass</span> { |
| <span class="ident">asciid</span>().<span class="ident">to_byte_class</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">asciis_bytes</span>() <span class="op">-></span> <span class="ident">ByteClass</span> { |
| <span class="ident">asciis</span>().<span class="ident">to_byte_class</span>() |
| } |
| |
| <span class="kw">fn</span> <span class="ident">asciiw_bytes</span>() <span class="op">-></span> <span class="ident">ByteClass</span> { |
| <span class="ident">asciiw</span>().<span class="ident">to_byte_class</span>() |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">empty</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">""</span>), <span class="ident">Expr</span>::<span class="ident">Empty</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">literal</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a"</span>), <span class="ident">lit</span>(<span class="string">'a'</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)a"</span>), <span class="ident">blit</span>(<span class="string">b'a'</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">literal_string</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"ab"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)])); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)ab"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">blit</span>(<span class="string">b'a'</span>), <span class="ident">blit</span>(<span class="string">b'b'</span>)])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">start_literal</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"^a"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">Expr</span>::<span class="ident">StartText</span>, |
| <span class="ident">Expr</span>::<span class="ident">Literal</span> { <span class="ident">chars</span>: <span class="macro">vec</span><span class="macro">!</span>[<span class="string">'a'</span>], <span class="ident">casei</span>: <span class="bool-val">false</span> }, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_zero_or_one_greedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a?"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrOne</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_zero_or_one_greedy_concat</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"ab?"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">lit</span>(<span class="string">'a'</span>), |
| <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'b'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrOne</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_zero_or_one_nongreedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a??"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrOne</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_one_or_more_greedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a+"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">OneOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_one_or_more_nongreedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a+?"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">OneOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_zero_or_more_greedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a*"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_zero_or_more_nongreedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a*?"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_exact</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{5}"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">Some</span>(<span class="number">5</span>) }, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_min</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{5,}"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">None</span> }, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_min_max</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{5,10}"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">Some</span>(<span class="number">10</span>) }, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_exact_nongreedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{5}?"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">Some</span>(<span class="number">5</span>) }, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_min_nongreedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{5,}?"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">None</span> }, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_min_max_nongreedy</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{5,10}?"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">Some</span>(<span class="number">10</span>) }, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">repeat_counted_whitespace</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{ 5 }"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">Some</span>(<span class="number">5</span>) }, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a{ 5 , 10 }"</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">Range</span> { <span class="ident">min</span>: <span class="number">5</span>, <span class="ident">max</span>: <span class="prelude-val">Some</span>(<span class="number">10</span>) }, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_literal</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(a)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_literal_concat</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(ab)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_two</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a|b"</span>), <span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_many</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"a|b|c"</span>), <span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_many_concat</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"ab|bc|cd"</span>), <span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)]), |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>)]), |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'c'</span>), <span class="ident">lit</span>(<span class="string">'d'</span>)]), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_group_two</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(a|b)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_group_many</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(a|b|c)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>)])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_group_many_concat</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(ab|bc|cd)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)]), |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>)]), |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'c'</span>), <span class="ident">lit</span>(<span class="string">'d'</span>)]), |
| ])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">alt_group_nested</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(ab|(bc|(cd)))"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>)]), |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>)]), |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'c'</span>), <span class="ident">lit</span>(<span class="string">'d'</span>)])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">3</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| } |
| ])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">2</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| ])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_name</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?P<foo>a)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"foo"</span>.<span class="ident">into</span>()), |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_no_capture</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?:a)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_flags</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i:a)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">liti</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u:a)"</span>), <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">bliti</span>(<span class="string">b'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_flags_returned</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i:a)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">liti</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| <span class="ident">lit</span>(<span class="string">'a'</span>), |
| ])); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u:a)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">bliti</span>(<span class="string">b'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| <span class="ident">lit</span>(<span class="string">'a'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">group_flags_retained</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)(?-i:a)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| <span class="ident">liti</span>(<span class="string">'a'</span>), |
| ])); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u)(?u-i:a)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| <span class="ident">bliti</span>(<span class="string">b'a'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_inline</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)a"</span>), <span class="ident">liti</span>(<span class="string">'a'</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_inline_multiple</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?is)a."</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">liti</span>(<span class="string">'a'</span>), <span class="ident">Expr</span>::<span class="ident">AnyChar</span>])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_inline_multiline</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?m)^(?-m)$"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">Expr</span>::<span class="ident">StartLine</span>, <span class="ident">Expr</span>::<span class="ident">EndText</span>])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_inline_swap_greed</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?U)a*a*?(?i-U)a*a*?"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }, |
| <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }, |
| <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">liti</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| }, |
| <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">liti</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_inline_multiple_negate_one</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?is)a.(?i-s)a."</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">liti</span>(<span class="string">'a'</span>), <span class="ident">Expr</span>::<span class="ident">AnyChar</span>, <span class="ident">liti</span>(<span class="string">'a'</span>), <span class="ident">Expr</span>::<span class="ident">AnyCharNoNL</span>, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">any_byte</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>( |
| <span class="ident">pb</span>(<span class="string">"(?-u).(?u)."</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">Expr</span>::<span class="ident">AnyByteNoNL</span>, <span class="ident">Expr</span>::<span class="ident">AnyCharNoNL</span>])); |
| <span class="macro">assert_eq</span><span class="macro">!</span>( |
| <span class="ident">pb</span>(<span class="string">"(?s)(?-u).(?u)."</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">Expr</span>::<span class="ident">AnyByte</span>, <span class="ident">Expr</span>::<span class="ident">AnyChar</span>])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_inline_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)a(?-i)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">liti</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'a'</span>)])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_group_inline</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(a(?i)a)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">liti</span>(<span class="string">'a'</span>)])), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| <span class="ident">lit</span>(<span class="string">'a'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_group_inline_retain</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)((?-i)a)a"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| <span class="ident">liti</span>(<span class="string">'a'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_default_casei</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">casei</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pf</span>(<span class="string">"a"</span>, <span class="ident">flags</span>), <span class="ident">liti</span>(<span class="string">'a'</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_default_multi</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">multi</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pf</span>(<span class="string">"^"</span>, <span class="ident">flags</span>), <span class="ident">Expr</span>::<span class="ident">StartLine</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_default_dotnl</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">dotnl</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pf</span>(<span class="string">"."</span>, <span class="ident">flags</span>), <span class="ident">Expr</span>::<span class="ident">AnyChar</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_default_swap_greed</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">swap_greed</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pf</span>(<span class="string">"a+"</span>, <span class="ident">flags</span>), <span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">OneOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">false</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">flags_default_ignore_space</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">ignore_space</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pf</span>(<span class="string">" a "</span>, <span class="ident">flags</span>), <span class="ident">lit</span>(<span class="string">'a'</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_simple</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\a\f\t\n\r\v"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">lit</span>(<span class="string">'\x07'</span>), <span class="ident">lit</span>(<span class="string">'\x0C'</span>), <span class="ident">lit</span>(<span class="string">'\t'</span>), |
| <span class="ident">lit</span>(<span class="string">'\n'</span>), <span class="ident">lit</span>(<span class="string">'\r'</span>), <span class="ident">lit</span>(<span class="string">'\x0B'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_boundaries</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\A\z\b\B"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">StartText</span>, <span class="ident">Expr</span>::<span class="ident">EndText</span>, |
| <span class="ident">Expr</span>::<span class="ident">WordBoundary</span>, <span class="ident">Expr</span>::<span class="ident">NotWordBoundary</span>, |
| ])); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\b\B"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">Expr</span>::<span class="ident">WordBoundaryAscii</span>, <span class="ident">Expr</span>::<span class="ident">NotWordBoundaryAscii</span>, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_punctuation</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\\\.\+\*\?\(\)\|\[\]\{\}\^\$\#"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">lit</span>(<span class="string">'\\'</span>), <span class="ident">lit</span>(<span class="string">'.'</span>), <span class="ident">lit</span>(<span class="string">'+'</span>), <span class="ident">lit</span>(<span class="string">'*'</span>), <span class="ident">lit</span>(<span class="string">'?'</span>), |
| <span class="ident">lit</span>(<span class="string">'('</span>), <span class="ident">lit</span>(<span class="string">')'</span>), <span class="ident">lit</span>(<span class="string">'|'</span>), <span class="ident">lit</span>(<span class="string">'['</span>), <span class="ident">lit</span>(<span class="string">']'</span>), |
| <span class="ident">lit</span>(<span class="string">'{'</span>), <span class="ident">lit</span>(<span class="string">'}'</span>), <span class="ident">lit</span>(<span class="string">'^'</span>), <span class="ident">lit</span>(<span class="string">'$'</span>), <span class="ident">lit</span>(<span class="string">'#'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_octal</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\123"</span>), <span class="ident">lit</span>(<span class="string">'S'</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\1234"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'S'</span>), <span class="ident">lit</span>(<span class="string">'4'</span>)])); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\377"</span>), <span class="ident">blit</span>(<span class="number">0xFF</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_hex2</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\x53"</span>), <span class="ident">lit</span>(<span class="string">'S'</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\x534"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'S'</span>), <span class="ident">lit</span>(<span class="string">'4'</span>)])); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\xff"</span>), <span class="ident">blit</span>(<span class="number">0xFF</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\x00"</span>), <span class="ident">blit</span>(<span class="number">0x0</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[\x00]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'\x00'</span>, <span class="string">b'\x00'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\x00]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'\x01'</span>, <span class="string">b'\xFF'</span>)]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_hex</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\x{53}"</span>), <span class="ident">lit</span>(<span class="string">'S'</span>)); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\x{53}4"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[<span class="ident">lit</span>(<span class="string">'S'</span>), <span class="ident">lit</span>(<span class="string">'4'</span>)])); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\x{2603}"</span>), <span class="ident">lit</span>(<span class="string">'\u{2603}'</span>)); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\x{00FF}"</span>), <span class="ident">blit</span>(<span class="number">0xFF</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_name</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\p{Yi}"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">YI</span>))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_letter</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\pZ"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\u{20}'</span>, <span class="string">'\u{20}'</span>), (<span class="string">'\u{a0}'</span>, <span class="string">'\u{a0}'</span>), |
| (<span class="string">'\u{1680}'</span>, <span class="string">'\u{1680}'</span>), (<span class="string">'\u{2000}'</span>, <span class="string">'\u{200a}'</span>), |
| (<span class="string">'\u{2028}'</span>, <span class="string">'\u{2029}'</span>), (<span class="string">'\u{202f}'</span>, <span class="string">'\u{202f}'</span>), |
| (<span class="string">'\u{205f}'</span>, <span class="string">'\u{205f}'</span>), (<span class="string">'\u{3000}'</span>, <span class="string">'\u{3000}'</span>), |
| ]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_name_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\p{Yi}"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">YI</span>).<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_letter_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\pZ"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\u{20}'</span>, <span class="string">'\u{20}'</span>), (<span class="string">'\u{a0}'</span>, <span class="string">'\u{a0}'</span>), |
| (<span class="string">'\u{1680}'</span>, <span class="string">'\u{1680}'</span>), (<span class="string">'\u{2000}'</span>, <span class="string">'\u{200a}'</span>), |
| (<span class="string">'\u{2028}'</span>, <span class="string">'\u{2029}'</span>), (<span class="string">'\u{202f}'</span>, <span class="string">'\u{202f}'</span>), |
| (<span class="string">'\u{205f}'</span>, <span class="string">'\u{205f}'</span>), (<span class="string">'\u{3000}'</span>, <span class="string">'\u{3000}'</span>), |
| ]).<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_name_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\P{Yi}"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">YI</span>).<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_letter_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\PZ"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\u{20}'</span>, <span class="string">'\u{20}'</span>), (<span class="string">'\u{a0}'</span>, <span class="string">'\u{a0}'</span>), |
| (<span class="string">'\u{1680}'</span>, <span class="string">'\u{1680}'</span>), (<span class="string">'\u{2000}'</span>, <span class="string">'\u{200a}'</span>), |
| (<span class="string">'\u{2028}'</span>, <span class="string">'\u{2029}'</span>), (<span class="string">'\u{202f}'</span>, <span class="string">'\u{202f}'</span>), |
| (<span class="string">'\u{205f}'</span>, <span class="string">'\u{205f}'</span>), (<span class="string">'\u{3000}'</span>, <span class="string">'\u{3000}'</span>), |
| ]).<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_name_negate_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\P{Yi}"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">YI</span>).<span class="ident">negate</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_unicode_letter_negate_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\PZ"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\u{20}'</span>, <span class="string">'\u{20}'</span>), (<span class="string">'\u{a0}'</span>, <span class="string">'\u{a0}'</span>), |
| (<span class="string">'\u{1680}'</span>, <span class="string">'\u{1680}'</span>), (<span class="string">'\u{2000}'</span>, <span class="string">'\u{200a}'</span>), |
| (<span class="string">'\u{2028}'</span>, <span class="string">'\u{2029}'</span>), (<span class="string">'\u{202f}'</span>, <span class="string">'\u{202f}'</span>), |
| (<span class="string">'\u{205f}'</span>, <span class="string">'\u{205f}'</span>), (<span class="string">'\u{3000}'</span>, <span class="string">'\u{3000}'</span>), |
| ]).<span class="ident">negate</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_d</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\d"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\d"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciid</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_s</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\s"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\s"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciis</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_w</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\w"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\w"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciiw</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_d_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\D"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\D"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciid</span>().<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_s_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\S"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>).<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\S"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciis</span>().<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_w_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"\W"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)\W"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciiw</span>().<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_d_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\d"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)\d"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciid</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_s_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\s"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)\s"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciis</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_w_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\w"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)\w"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">asciiw</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_d_case_fold_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\D"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciid</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)\D"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">bytes</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_s_case_fold_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\S"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciis</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)\S"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">bytes</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">escape_perl_w_case_fold_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)\W"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciiw</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)\W"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">bytes</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[a]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'a'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\x00]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'\x00'</span>, <span class="string">'\x00'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\n]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'\n'</span>, <span class="string">'\n'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[\n]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'\n'</span>, <span class="string">'\n'</span>)]))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[a]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'a'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[\x00]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="number">0</span>, <span class="number">0</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[\xFF]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="number">0xFF</span>, <span class="number">0xFF</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[\n]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'\n'</span>, <span class="string">b'\n'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[\n]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'\n'</span>, <span class="string">b'\n'</span>)]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^a]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\x00'</span>, <span class="string">'\x60'</span>), (<span class="string">'\x62'</span>, <span class="string">'\u{10FFFF}'</span>), |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\x00]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\x01'</span>, <span class="string">'\u{10FFFF}'</span>), |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\n]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\x00'</span>, <span class="string">'\x09'</span>), (<span class="string">'\x0b'</span>, <span class="string">'\u{10FFFF}'</span>), |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[^\n]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[ |
| (<span class="string">'\x00'</span>, <span class="string">'\x09'</span>), (<span class="string">'\x0b'</span>, <span class="string">'\u{10FFFF}'</span>), |
| ]))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^a]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[ |
| (<span class="number">0x00</span>, <span class="number">0x60</span>), (<span class="number">0x62</span>, <span class="number">0xFF</span>), |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\x00]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[ |
| (<span class="number">0x01</span>, <span class="number">0xFF</span>), |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\n]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[ |
| (<span class="number">0x00</span>, <span class="number">0x09</span>), (<span class="number">0x0B</span>, <span class="number">0xFF</span>), |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[^\n]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[ |
| (<span class="number">0x00</span>, <span class="number">0x09</span>), (<span class="number">0x0B</span>, <span class="number">0xFF</span>), |
| ]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_class</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\d]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\p{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">YI</span>))); |
| |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">to_byte_class</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[\d]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_class_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\d]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\w]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\s]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>).<span class="ident">negate</span>())); |
| |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciid_bytes</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\d]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciiw_bytes</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\w]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciis_bytes</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\s]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_class_negate_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\D]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\W]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\S]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\D]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciid_bytes</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\W]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciiw_bytes</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?-u)[^\S]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciis_bytes</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_class_casei</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[\d]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[\p{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">YI</span>).<span class="ident">case_fold</span>())); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[\d]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciid_bytes</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_class_negate_casei</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\d]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\w]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\s]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciid_bytes</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[^\d]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciiw_bytes</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[^\w]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">asciis_bytes</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[^\s]"</span>), <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bytes</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_singleton_class_negate_negate_casei</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\D]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\W]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\S]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLS</span>).<span class="ident">case_fold</span>())); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[^\D]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciid_bytes</span>().<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[^\W]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciiw_bytes</span>().<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">r"(?i-u)[^\S]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">asciis_bytes</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_multiple_class</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\d\p{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[ |
| <span class="ident">PERLD</span>, <span class="ident">YI</span>, |
| ]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_multiple_class_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\d\p{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[ |
| <span class="ident">PERLD</span>, <span class="ident">YI</span>, |
| ]).<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_multiple_class_negate_negate</span>() { |
| <span class="kw">let</span> <span class="ident">nperlw</span> <span class="op">=</span> <span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">negate</span>(); |
| <span class="kw">let</span> <span class="ident">nyi</span> <span class="op">=</span> <span class="ident">class</span>(<span class="ident">YI</span>).<span class="ident">negate</span>(); |
| <span class="kw">let</span> <span class="ident">cls</span> <span class="op">=</span> <span class="ident">CharClass</span>::<span class="ident">empty</span>().<span class="ident">merge</span>(<span class="ident">nperlw</span>).<span class="ident">merge</span>(<span class="ident">nyi</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[^\W\P{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">cls</span>.<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_multiple_class_casei</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[\d\p{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[ |
| <span class="ident">PERLD</span>, <span class="ident">YI</span>, |
| ]).<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_multiple_class_negate_casei</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\d\p{Yi}]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[ |
| <span class="ident">PERLD</span>, <span class="ident">YI</span>, |
| ]).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_multiple_class_negate_negate_casei</span>() { |
| <span class="kw">let</span> <span class="ident">nperlw</span> <span class="op">=</span> <span class="ident">class</span>(<span class="ident">PERLW</span>).<span class="ident">negate</span>(); |
| <span class="kw">let</span> <span class="ident">nyi</span> <span class="op">=</span> <span class="ident">class</span>(<span class="ident">YI</span>).<span class="ident">negate</span>(); |
| <span class="kw">let</span> <span class="ident">class</span> <span class="op">=</span> <span class="ident">CharClass</span>::<span class="ident">empty</span>().<span class="ident">merge</span>(<span class="ident">nperlw</span>).<span class="ident">merge</span>(<span class="ident">nyi</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?i)[^\W\P{Yi}]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>.<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_class_hypen</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\p{Yi}-]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[ |
| <span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)], <span class="ident">YI</span>, |
| ]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"[\p{Yi}-a]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[ |
| <span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)], <span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'a'</span>)], <span class="ident">YI</span>, |
| ]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_brackets</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[]]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">']'</span>, <span class="string">']'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[][]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'['</span>, <span class="string">'['</span>), (<span class="string">']'</span>, <span class="string">']'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[[]]"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'['</span>, <span class="string">'['</span>)])), |
| <span class="ident">lit</span>(<span class="string">']'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_brackets_hypen</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[]-]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>), (<span class="string">']'</span>, <span class="string">']'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[-]]"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'-'</span>, <span class="string">'-'</span>)])), |
| <span class="ident">lit</span>(<span class="string">']'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">class_overlapping</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[a-fd-h]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'h'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[a-fg-m]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'m'</span>)]))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[a-fd-h]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'h'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[a-fg-m]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b'a'</span>, <span class="string">b'm'</span>)]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[:upper:]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[[:upper:]]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[:upper:]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[[:upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">to_byte_class</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes_not</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[:abc:]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">':'</span>, <span class="string">':'</span>), (<span class="string">'a'</span>, <span class="string">'c'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[:abc:]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">bclass</span>(<span class="kw-2">&</span>[(<span class="string">b':'</span>, <span class="string">b':'</span>), (<span class="string">b'a'</span>, <span class="string">b'c'</span>)]))); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes_multiple</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[[:lower:][:upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[<span class="ident">UPPER</span>, <span class="ident">LOWER</span>]))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[[:lower:][:upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">classes</span>(<span class="kw-2">&</span>[<span class="ident">UPPER</span>, <span class="ident">LOWER</span>]).<span class="ident">to_byte_class</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes_negate</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[[:^upper:]]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[^[:^upper:]]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>))); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[[:^upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">to_byte_class</span>().<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?-u)[^[:^upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">to_byte_class</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes_negate_multiple</span>() { |
| <span class="kw">let</span> (<span class="ident">nlower</span>, <span class="ident">nword</span>) <span class="op">=</span> (<span class="ident">class</span>(<span class="ident">LOWER</span>).<span class="ident">negate</span>(), <span class="ident">class</span>(<span class="ident">WORD</span>).<span class="ident">negate</span>()); |
| <span class="kw">let</span> <span class="ident">cls</span> <span class="op">=</span> <span class="ident">CharClass</span>::<span class="ident">empty</span>().<span class="ident">merge</span>(<span class="ident">nlower</span>).<span class="ident">merge</span>(<span class="ident">nword</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[[:^lower:][:^word:]]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">cls</span>.<span class="ident">clone</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"[^[:^lower:][:^word:]]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">cls</span>.<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)[:upper:]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)[[:upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">case_fold</span>())); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u)[:upper:]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">case_fold</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u)[[:upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">to_byte_class</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ascii_classes_negate_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)[[:^upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)[^[:^upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">case_fold</span>())); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u)[[:^upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>( |
| <span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">to_byte_class</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u)[^[:^upper:]]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>(<span class="ident">class</span>(<span class="ident">UPPER</span>).<span class="ident">to_byte_class</span>().<span class="ident">case_fold</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">single_class_negate_case_fold</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?i)[^x]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'x'</span>, <span class="string">'x'</span>)]).<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">pb</span>(<span class="string">"(?i-u)[^x]"</span>), |
| <span class="ident">Expr</span>::<span class="ident">ClassBytes</span>( |
| <span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'x'</span>, <span class="string">'x'</span>)]) |
| .<span class="ident">to_byte_class</span>().<span class="ident">case_fold</span>().<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_empty</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?x) "</span>), <span class="ident">Expr</span>::<span class="ident">Empty</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_literal</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?x) a b c"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_literal_off</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?x) a b c(?-x) a"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">lit</span>(<span class="string">'a'</span>), <span class="ident">lit</span>(<span class="string">'b'</span>), <span class="ident">lit</span>(<span class="string">'c'</span>), <span class="ident">lit</span>(<span class="string">' '</span>), <span class="ident">lit</span>(<span class="string">'a'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_class</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?x)[a |
| - z |
| ]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'z'</span>)]))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">"(?x)[ ^ a |
| - z |
| ]"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="kw-2">&</span>[(<span class="string">'a'</span>, <span class="string">'z'</span>)]).<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_escape</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?x)\ d"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>))); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?x)\ |
| D"</span>), <span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>).<span class="ident">negate</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_comments</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?x)(?P<foo> |
| a # comment 1 |
| )(?P<bar> |
| z # comment 2 |
| )"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">1</span>), |
| <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"foo"</span>.<span class="ident">into</span>()), |
| }, |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">lit</span>(<span class="string">'z'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">Some</span>(<span class="number">2</span>), |
| <span class="ident">name</span>: <span class="prelude-val">Some</span>(<span class="string">"bar"</span>.<span class="ident">into</span>()), |
| }, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_comments_re_enable</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?x)a # hi |
| (?-x:#) # sweet"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">lit</span>(<span class="string">'a'</span>), |
| <span class="ident">Expr</span>::<span class="ident">Group</span> { |
| <span class="ident">e</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">lit</span>(<span class="string">'#'</span>)), |
| <span class="ident">i</span>: <span class="prelude-val">None</span>, |
| <span class="ident">name</span>: <span class="prelude-val">None</span>, |
| }, |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_escape_punctuation</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?x)\\\.\+\*\?\(\)\|\[\]\{\}\^\$\#"</span>), <span class="ident">c</span>(<span class="kw-2">&</span>[ |
| <span class="ident">lit</span>(<span class="string">'\\'</span>), <span class="ident">lit</span>(<span class="string">'.'</span>), <span class="ident">lit</span>(<span class="string">'+'</span>), <span class="ident">lit</span>(<span class="string">'*'</span>), <span class="ident">lit</span>(<span class="string">'?'</span>), |
| <span class="ident">lit</span>(<span class="string">'('</span>), <span class="ident">lit</span>(<span class="string">')'</span>), <span class="ident">lit</span>(<span class="string">'|'</span>), <span class="ident">lit</span>(<span class="string">'['</span>), <span class="ident">lit</span>(<span class="string">']'</span>), |
| <span class="ident">lit</span>(<span class="string">'{'</span>), <span class="ident">lit</span>(<span class="string">'}'</span>), <span class="ident">lit</span>(<span class="string">'^'</span>), <span class="ident">lit</span>(<span class="string">'$'</span>), <span class="ident">lit</span>(<span class="string">'#'</span>), |
| ])); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">ignore_space_escape_hash</span>() { |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">p</span>(<span class="string">r"(?x)a\# # hi there"</span>), <span class="ident">Expr</span>::<span class="ident">Concat</span>(<span class="macro">vec</span><span class="macro">!</span>[ |
| <span class="ident">lit</span>(<span class="string">'a'</span>), |
| <span class="ident">lit</span>(<span class="string">'#'</span>), |
| ])); |
| } |
| |
| <span class="comment">// Test every single possible error case.</span> |
| |
| <span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">test_err</span> { |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">re</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">pos</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">kind</span>:<span class="ident">expr</span>) <span class="op">=></span> { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">re</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">pos</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">kind</span>, <span class="ident">Flags</span>::<span class="ident">default</span>()); |
| }; |
| (<span class="macro-nonterminal">$</span><span class="macro-nonterminal">re</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">pos</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">kind</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">flags</span>:<span class="ident">expr</span>) <span class="op">=></span> {{ |
| <span class="kw">let</span> <span class="ident">err</span> <span class="op">=</span> <span class="ident">Parser</span>::<span class="ident">parse</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">re</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">flags</span>).<span class="ident">unwrap_err</span>(); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">pos</span>, <span class="ident">err</span>.<span class="ident">pos</span>); |
| <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">kind</span>, <span class="ident">err</span>.<span class="ident">kind</span>); |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">re</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="ident">err</span>.<span class="ident">surround</span>)); |
| }} |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">invalid_utf8_not_allowed</span>() { |
| <span class="comment">// let flags = Flags { unicode: false, .. Flags::default() };</span> |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)\xFF"</span>, <span class="number">9</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)."</span>, <span class="number">5</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)(?s)."</span>, <span class="number">9</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)[\x00-\x80]"</span>, <span class="number">15</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)\222"</span>, <span class="number">9</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)\x{0080}"</span>, <span class="number">13</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidUtf8</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">unicode_char_not_allowed</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">allow_bytes</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"☃(?-u:☃)"</span>, <span class="number">7</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">unicode_class_not_allowed</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">allow_bytes</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"☃(?-u:\pL)"</span>, <span class="number">9</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">unicode_class_literal_not_allowed</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">allow_bytes</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)[☃]"</span>, <span class="number">6</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)[☃-☃]"</span>, <span class="number">6</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">unicode_hex_not_allowed</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">allow_bytes</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)\x{FFFF}"</span>, <span class="number">13</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)\x{100}"</span>, <span class="number">12</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">unicode_octal_not_allowed</span>() { |
| <span class="kw">let</span> <span class="ident">flags</span> <span class="op">=</span> <span class="ident">Flags</span> { <span class="ident">allow_bytes</span>: <span class="bool-val">true</span>, .. <span class="ident">Flags</span>::<span class="ident">default</span>() }; |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"(?-u)\400"</span>, <span class="number">9</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnicodeNotAllowed</span>, <span class="ident">flags</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_no_expr_simple</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(*"</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">RepeaterExpectsExpr</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_no_expr_counted</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"({5}"</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">RepeaterExpectsExpr</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_beginning_counted</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"{5}"</span>, <span class="number">0</span>, <span class="ident">ErrorKind</span>::<span class="ident">RepeaterExpectsExpr</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_illegal_exprs_simple</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a**"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">RepeaterUnexpectedExpr</span>(<span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| })); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a|*"</span>, <span class="number">2</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">RepeaterUnexpectedExpr</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">lit</span>(<span class="string">'a'</span>)])) |
| ); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_illegal_exprs_counted</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a*{5}"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">RepeaterUnexpectedExpr</span>(<span class="ident">Expr</span>::<span class="ident">Repeat</span> { |
| <span class="ident">e</span>: <span class="ident">b</span>(<span class="ident">lit</span>(<span class="string">'a'</span>)), |
| <span class="ident">r</span>: <span class="ident">Repeater</span>::<span class="ident">ZeroOrMore</span>, |
| <span class="ident">greedy</span>: <span class="bool-val">true</span>, |
| })); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a|{5}"</span>, <span class="number">2</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">RepeaterUnexpectedExpr</span>(<span class="ident">Expr</span>::<span class="ident">Alternate</span>(<span class="macro">vec</span><span class="macro">!</span>[<span class="ident">lit</span>(<span class="string">'a'</span>)])) |
| ); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_empty_number</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{}"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">MissingBase10</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_eof</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{5"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedRepeat</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_empty_number_eof</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{xyz"</span>, <span class="number">5</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="string">"xyz"</span>.<span class="ident">into</span>())); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{12,xyz"</span>, <span class="number">8</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="string">"xyz"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_invalid_number</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{9999999999}"</span>, <span class="number">12</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="string">"9999999999"</span>.<span class="ident">into</span>())); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{1,9999999999}"</span>, <span class="number">14</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="string">"9999999999"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_invalid_number_extra</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{12x}"</span>, <span class="number">5</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="string">"12x"</span>.<span class="ident">into</span>())); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{1,12x}"</span>, <span class="number">7</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase10</span>(<span class="string">"12x"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_repeat_invalid_range</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a{2,1}"</span>, <span class="number">5</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidRepeatRange</span> { <span class="ident">min</span>: <span class="number">2</span>, <span class="ident">max</span>: <span class="number">1</span> }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_alternate_empty</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"|a"</span>, <span class="number">0</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_alternate_empty_with_group</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(|a)"</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_alternate_empty_with_alternate</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a||"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_unopened_empty</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">")"</span>, <span class="number">0</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnopenedParen</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_unopened</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"ab)"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnopenedParen</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_unopened_with_alt</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a|b)"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnopenedParen</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_unclosed_with_alt</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(a|b"</span>, <span class="number">0</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedParen</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_empty_alt</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(a|)"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_empty_group</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"()"</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyGroup</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_close_paren_empty_group_with_name</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?P<foo>)"</span>, <span class="number">8</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyGroup</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_finish_concat_unclosed</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"ab(xy"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedParen</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_finish_concat_empty_alt</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"a|"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyAlternate</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_name_invalid</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?P<a#>x)"</span>, <span class="number">6</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidCaptureName</span>(<span class="string">"a#"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_name_invalid_leading</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?P<1a>a)"</span>, <span class="number">6</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidCaptureName</span>(<span class="string">"1a"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_name_unexpected_eof</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?P<a"</span>, <span class="number">5</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedCaptureName</span>(<span class="string">"a"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_name_empty</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?P<>a)"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyCaptureName</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_opts_unrecognized_flag</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?z:a)"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedFlag</span>(<span class="string">'z'</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_opts_unexpected_eof</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?i"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedFlagEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_opts_double_negation</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?-i-s:a)"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">DoubleFlagNegation</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_opts_empty_negation</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?i-:a)"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyFlagNegation</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_group_opts_empty</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?)"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyFlagNegation</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_unexpected_eof</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\"</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedEscapeEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_unrecognized</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\m"</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedEscape</span>(<span class="string">'m'</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex2_eof0</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedTwoDigitHexEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex2_eof1</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\xA"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedTwoDigitHexEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex2_invalid</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\xAG"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase16</span>(<span class="string">"AG"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex_eof0</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x{"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase16</span>(<span class="string">""</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex_eof1</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x{A"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedHex</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex_invalid</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x{AG}"</span>, <span class="number">5</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase16</span>(<span class="string">"AG"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex_invalid_scalar_value_surrogate</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x{D800}"</span>, <span class="number">8</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidScalarValue</span>(<span class="number">0xD800</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex_invalid_scalar_value_high</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x{110000}"</span>, <span class="number">10</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidScalarValue</span>(<span class="number">0x110000</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_escape_hex_invalid_u32</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\x{9999999999}"</span>, <span class="number">13</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidBase16</span>(<span class="string">"9999999999"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_unicode_unclosed</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\p{"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedUnicodeName</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\p{Greek"</span>, <span class="number">8</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnclosedUnicodeName</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_unicode_no_letter</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\p"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedEscapeEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_unicode_unknown_letter</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\pA"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedUnicodeClass</span>(<span class="string">"A"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_unicode_unknown_name</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"\p{Yii}"</span>, <span class="number">7</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedUnicodeClass</span>(<span class="string">"Yii"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_eof_empty</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"["</span>, <span class="number">1</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[^"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_eof_non_empty</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[a"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[^a"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_eof_range</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[a-"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[^a-"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[---"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_invalid_escape</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"[\pA]"</span>, <span class="number">4</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">UnrecognizedUnicodeClass</span>(<span class="string">"A"</span>.<span class="ident">into</span>())); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_valid_escape_not_allowed</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"[\A]"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidClassEscape</span>(<span class="ident">Expr</span>::<span class="ident">StartText</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_range_valid_escape_not_allowed</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"[a-\d]"</span>, <span class="number">5</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidClassEscape</span>(<span class="ident">Expr</span>::<span class="ident">Class</span>(<span class="ident">class</span>(<span class="ident">PERLD</span>)))); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"[a-\A]"</span>, <span class="number">5</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidClassEscape</span>(<span class="ident">Expr</span>::<span class="ident">StartText</span>)); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"[\A-a]"</span>, <span class="number">3</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">InvalidClassEscape</span>(<span class="ident">Expr</span>::<span class="ident">StartText</span>)); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_invalid_range</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[z-a]"</span>, <span class="number">4</span>, <span class="ident">ErrorKind</span>::<span class="ident">InvalidClassRange</span> { |
| <span class="ident">start</span>: <span class="string">'z'</span>, |
| <span class="ident">end</span>: <span class="string">'a'</span>, |
| }); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_class_empty_range</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[]"</span>, <span class="number">2</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"[^]"</span>, <span class="number">3</span>, <span class="ident">ErrorKind</span>::<span class="ident">UnexpectedClassEof</span>); |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">r"[^\d\D]"</span>, <span class="number">7</span>, <span class="ident">ErrorKind</span>::<span class="ident">EmptyClass</span>); |
| } |
| |
| <span class="attribute">#[<span class="ident">test</span>]</span> |
| <span class="kw">fn</span> <span class="ident">error_duplicate_capture_name</span>() { |
| <span class="macro">test_err</span><span class="macro">!</span>(<span class="string">"(?P<a>.)(?P<a>.)"</span>, <span class="number">14</span>, |
| <span class="ident">ErrorKind</span>::<span class="ident">DuplicateCaptureName</span>(<span class="string">"a"</span>.<span class="ident">into</span>())); |
| } |
| } |
| </pre> |
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