<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: regex_scanner.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(initResizable); /* @license-end */</script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.15 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(function(){initNavTree('a00494_source.html','');}); /* @license-end */ </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">regex_scanner.h</div> </div> </div><!--header--> <div class="contents"> <a href="a00494.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// class template regex -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2013-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/**</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @file bits/regex_scanner.h</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * This is an internal header file, included by other library headers.</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * Do not attempt to use it directly. @headername{regex}</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> */</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">namespace </span><a class="code" href="a01538.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>__detail</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> {<span class="comment"></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> /**</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * @addtogroup regex-detail</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * @{</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> */</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">struct </span>_ScannerBase</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">public</span>:<span class="comment"></span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> /// Token types returned from the scanner.</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"></span> <span class="keyword">enum</span> _TokenT : <span class="keywordtype">unsigned</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  _S_token_anychar,</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  _S_token_ord_char,</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  _S_token_oct_num,</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  _S_token_hex_num,</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  _S_token_backref,</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  _S_token_subexpr_begin,</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  _S_token_subexpr_no_group_begin,</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  _S_token_subexpr_lookahead_begin, <span class="comment">// neg if _M_value[0] == 'n'</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  _S_token_subexpr_end,</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  _S_token_bracket_begin,</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  _S_token_bracket_neg_begin,</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  _S_token_bracket_end,</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  _S_token_interval_begin,</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  _S_token_interval_end,</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  _S_token_quoted_class,</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  _S_token_char_class_name,</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  _S_token_collsymbol,</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  _S_token_equiv_class_name,</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  _S_token_opt,</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  _S_token_or,</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  _S_token_closure0,</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  _S_token_closure1,</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  _S_token_line_begin,</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  _S_token_line_end,</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  _S_token_word_bound, <span class="comment">// neg if _M_value[0] == 'n'</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  _S_token_comma,</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  _S_token_dup_count,</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  _S_token_eof,</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  _S_token_bracket_dash,</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  _S_token_unknown = -1u</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  };</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">typedef</span> <a class="code" href="a01564.html#a510caedb3e640b81620023a85c1280bb">regex_constants::syntax_option_type</a> _FlagT;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">enum</span> _StateT</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  _S_state_normal,</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  _S_state_in_brace,</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  _S_state_in_bracket,</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  };</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  _ScannerBase(_FlagT __flags)</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  : _M_state(_S_state_normal),</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  _M_flags(__flags),</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  _M_escape_tbl(_M_is_ecma()</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  ? _M_ecma_escape_tbl</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  : _M_awk_escape_tbl),</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  _M_spec_char(_M_is_ecma()</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  ? _M_ecma_spec_char</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  : _M_flags & regex_constants::<a class="code" href="a01564.html#a195f47d5fe8ab2a35c240cf7cb012b88">basic</a></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  ? _M_basic_spec_char</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  : _M_flags & regex_constants::<a class="code" href="a01564.html#af6c55a7ee994437667dd9b8b5a0580e0">extended</a></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  ? _M_extended_spec_char</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  : _M_flags & regex_constants::<a class="code" href="a01564.html#afa201fcaeca378cea22d0cb2a27dd87f">grep</a></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  ? <span class="stringliteral">".[\\*^$\n"</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  : _M_flags & regex_constants::<a class="code" href="a01564.html#a20359992d27c0743cae90e4bae7f8129">egrep</a></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  ? <span class="stringliteral">".[\\()*+?{|^$\n"</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  : _M_flags & regex_constants::<a class="code" href="a01564.html#a1de0f54830ba2d86ca5244f8609fef2c">awk</a></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  ? _M_extended_spec_char</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  : nullptr),</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  _M_at_bracket_start(false)</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  { __glibcxx_assert(_M_spec_char); }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>*</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  _M_find_escape(<span class="keywordtype">char</span> __c)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  {</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">auto</span> __it = _M_escape_tbl;</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">for</span> (; __it->first != <span class="charliteral">'\0'</span>; ++__it)</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">if</span> (__it->first == __c)</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> &__it->second;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  _M_is_ecma()<span class="keyword"> const</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_flags & <a class="code" href="a01564.html#af95882ac8ac4454e386d29f45ea5bbbf">regex_constants::ECMAScript</a>; }</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  _M_is_basic()<span class="keyword"> const</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_flags & (<a class="code" href="a01564.html#a195f47d5fe8ab2a35c240cf7cb012b88">regex_constants::basic</a> | <a class="code" href="a01564.html#afa201fcaeca378cea22d0cb2a27dd87f">regex_constants::grep</a>); }</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  _M_is_extended()<span class="keyword"> const</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> _M_flags & (<a class="code" href="a01564.html#af6c55a7ee994437667dd9b8b5a0580e0">regex_constants::extended</a></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  | <a class="code" href="a01564.html#a20359992d27c0743cae90e4bae7f8129">regex_constants::egrep</a></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  | <a class="code" href="a01564.html#a1de0f54830ba2d86ca5244f8609fef2c">regex_constants::awk</a>);</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  _M_is_grep()<span class="keyword"> const</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_flags & (<a class="code" href="a01564.html#afa201fcaeca378cea22d0cb2a27dd87f">regex_constants::grep</a> | <a class="code" href="a01564.html#a20359992d27c0743cae90e4bae7f8129">regex_constants::egrep</a>); }</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  _M_is_awk()<span class="keyword"> const</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_flags & <a class="code" href="a01564.html#a1de0f54830ba2d86ca5244f8609fef2c">regex_constants::awk</a>; }</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// TODO: Make them static in the next abi change.</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">const</span> <a class="code" href="a07764.html">std::pair<char, _TokenT></a> _M_token_tbl[9] =</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  {</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {<span class="charliteral">'^'</span>, _S_token_line_begin},</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  {<span class="charliteral">'$'</span>, _S_token_line_end},</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  {<span class="charliteral">'.'</span>, _S_token_anychar},</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {<span class="charliteral">'*'</span>, _S_token_closure0},</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  {<span class="charliteral">'+'</span>, _S_token_closure1},</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {<span class="charliteral">'?'</span>, _S_token_opt},</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  {<span class="charliteral">'|'</span>, _S_token_or},</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  {<span class="charliteral">'\n'</span>, _S_token_or}, <span class="comment">// grep and egrep</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  {<span class="charliteral">'\0'</span>, _S_token_or},</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  };</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">const</span> <a class="code" href="a07764.html">std::pair<char, char></a> _M_ecma_escape_tbl[8] =</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  {<span class="charliteral">'0'</span>, <span class="charliteral">'\0'</span>},</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  {<span class="charliteral">'b'</span>, <span class="charliteral">'\b'</span>},</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  {<span class="charliteral">'f'</span>, <span class="charliteral">'\f'</span>},</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  {<span class="charliteral">'n'</span>, <span class="charliteral">'\n'</span>},</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  {<span class="charliteral">'r'</span>, <span class="charliteral">'\r'</span>},</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  {<span class="charliteral">'t'</span>, <span class="charliteral">'\t'</span>},</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  {<span class="charliteral">'v'</span>, <span class="charliteral">'\v'</span>},</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  {<span class="charliteral">'\0'</span>, <span class="charliteral">'\0'</span>},</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  };</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">const</span> <a class="code" href="a07764.html">std::pair<char, char></a> _M_awk_escape_tbl[11] =</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  {</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  {<span class="charliteral">'"'</span>, <span class="charliteral">'"'</span>},</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  {<span class="charliteral">'/'</span>, <span class="charliteral">'/'</span>},</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  {<span class="charliteral">'\\'</span>, <span class="charliteral">'\\'</span>},</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  {<span class="charliteral">'a'</span>, <span class="charliteral">'\a'</span>},</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  {<span class="charliteral">'b'</span>, <span class="charliteral">'\b'</span>},</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  {<span class="charliteral">'f'</span>, <span class="charliteral">'\f'</span>},</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  {<span class="charliteral">'n'</span>, <span class="charliteral">'\n'</span>},</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {<span class="charliteral">'r'</span>, <span class="charliteral">'\r'</span>},</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  {<span class="charliteral">'t'</span>, <span class="charliteral">'\t'</span>},</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  {<span class="charliteral">'v'</span>, <span class="charliteral">'\v'</span>},</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  {<span class="charliteral">'\0'</span>, <span class="charliteral">'\0'</span>},</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  };</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* _M_ecma_spec_char = <span class="stringliteral">"^$\\.*+?()[]{}|"</span>;</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* _M_basic_spec_char = <span class="stringliteral">".[\\*^$"</span>;</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* _M_extended_spec_char = <span class="stringliteral">".[\\()*+?{|^$"</span>;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  _StateT _M_state;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  _FlagT _M_flags;</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  _TokenT _M_token;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">const</span> <a class="code" href="a07764.html">std::pair<char, char></a>* _M_escape_tbl;</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* _M_spec_char;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">bool</span> _M_at_bracket_start;</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  };</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"></span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> /**</span></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"> * @brief Scans an input range for regex tokens.</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment"> *</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment"> * The %_Scanner class interprets the regular expression pattern in</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment"> * the input range passed to its constructor as a sequence of parse</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment"> * tokens passed to the regular expression compiler. The sequence</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment"> * of tokens provided depends on the flag settings passed to the</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment"> * constructor: different regular expression grammars will interpret</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"> * the same input pattern in syntactically different ways.</span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment"> */</span></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _CharT></div><div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="a06844.html"> 210</a></span>  <span class="keyword">class </span><a class="code" href="a06844.html">_Scanner</a></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  : <span class="keyword">public</span> _ScannerBase</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  {</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _CharT* _IterT;</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">typedef</span> <a class="code" href="a04768.html">std::basic_string<_CharT></a> <a class="code" href="a04768.html">_StringT</a>;</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keyword">typedef</span> <a class="code" href="a01564.html#a510caedb3e640b81620023a85c1280bb">regex_constants::syntax_option_type</a> <a class="code" href="a01564.html#a510caedb3e640b81620023a85c1280bb">_FlagT</a>;</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> <a class="code" href="a05856.html">std::ctype<_CharT></a> <a class="code" href="a05856.html">_CtypeT</a>;</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="a06844.html">_Scanner</a>(_IterT __begin, _IterT __end,</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <a class="code" href="a01564.html#a510caedb3e640b81620023a85c1280bb">_FlagT</a> __flags, <a class="code" href="a05816.html">std::locale</a> __loc);</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  _M_advance();</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  _TokenT</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  _M_get_token()<span class="keyword"> const</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_token; }</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span> </div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keyword">const</span> <a class="code" href="a04768.html">_StringT</a>&</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  _M_get_value()<span class="keyword"> const</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_value; }</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="preprocessor">#ifdef _GLIBCXX_DEBUG</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <a class="code" href="a02460.html">std::ostream</a>&</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  _M_print(<a class="code" href="a02460.html">std::ostream</a>&);</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  _M_scan_normal();</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  _M_scan_in_bracket();</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  _M_scan_in_brace();</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  _M_eat_escape_ecma();</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  _M_eat_escape_posix();</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  _M_eat_escape_awk();</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  _M_eat_class(<span class="keywordtype">char</span>);</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  _IterT _M_current;</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  _IterT _M_end;</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <a class="code" href="a05856.html">_CtypeT</a>& _M_ctype;</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <a class="code" href="a04768.html">_StringT</a> _M_value;</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  void (<a class="code" href="a06844.html">_Scanner</a>::* _M_eat_escape)();</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  };</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment"></span></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment"> //@} regex-detail</span></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment"></span>} <span class="comment">// namespace __detail</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> } <span class="comment">// namespace std</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="preprocessor">#include <<a class="code" href="a00497.html">bits/regex_scanner.tcc</a>></span></div><div class="ttc" id="a04768_html"><div class="ttname"><a href="a04768.html">std::basic_string< _CharT ></a></div></div> <div class="ttc" id="a01564_html_a20359992d27c0743cae90e4bae7f8129"><div class="ttname"><a href="a01564.html#a20359992d27c0743cae90e4bae7f8129">std::regex_constants::egrep</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr syntax_option_type egrep</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00170">regex_constants.h:170</a></div></div> <div class="ttc" id="a01564_html_af95882ac8ac4454e386d29f45ea5bbbf"><div class="ttname"><a href="a01564.html#af95882ac8ac4454e386d29f45ea5bbbf">std::regex_constants::ECMAScript</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr syntax_option_type ECMAScript</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00122">regex_constants.h:122</a></div></div> <div class="ttc" id="a01538_html"><div class="ttname"><a href="a01538.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div> <div class="ttc" id="a05816_html"><div class="ttname"><a href="a05816.html">std::locale</a></div><div class="ttdoc">Container class for localization functionality.The locale class is first a class wrapper for C librar...</div><div class="ttdef"><b>Definition:</b> <a href="a00392_source.html#l00062">locale_classes.h:62</a></div></div> <div class="ttc" id="a01564_html_a195f47d5fe8ab2a35c240cf7cb012b88"><div class="ttname"><a href="a01564.html#a195f47d5fe8ab2a35c240cf7cb012b88">std::regex_constants::basic</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr syntax_option_type basic</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00132">regex_constants.h:132</a></div></div> <div class="ttc" id="a01564_html_a510caedb3e640b81620023a85c1280bb"><div class="ttname"><a href="a01564.html#a510caedb3e640b81620023a85c1280bb">std::regex_constants::syntax_option_type</a></div><div class="ttdeci">syntax_option_type</div><div class="ttdoc">This is a bitmask type indicating how to interpret the regex.</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00081">regex_constants.h:81</a></div></div> <div class="ttc" id="a01564_html_a1de0f54830ba2d86ca5244f8609fef2c"><div class="ttname"><a href="a01564.html#a1de0f54830ba2d86ca5244f8609fef2c">std::regex_constants::awk</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr syntax_option_type awk</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00152">regex_constants.h:152</a></div></div> <div class="ttc" id="a01564_html_af6c55a7ee994437667dd9b8b5a0580e0"><div class="ttname"><a href="a01564.html#af6c55a7ee994437667dd9b8b5a0580e0">std::regex_constants::extended</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr syntax_option_type extended</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00141">regex_constants.h:141</a></div></div> <div class="ttc" id="a05856_html"><div class="ttname"><a href="a05856.html">std::ctype</a></div><div class="ttdoc">Primary class template ctype facet.This template class defines classification and conversion function...</div><div class="ttdef"><b>Definition:</b> <a href="a00401_source.html#l00612">locale_facets.h:612</a></div></div> <div class="ttc" id="a00497_html"><div class="ttname"><a href="a00497.html">regex_scanner.tcc</a></div></div> <div class="ttc" id="a01564_html_afa201fcaeca378cea22d0cb2a27dd87f"><div class="ttname"><a href="a01564.html#afa201fcaeca378cea22d0cb2a27dd87f">std::regex_constants::grep</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr syntax_option_type grep</div><div class="ttdef"><b>Definition:</b> <a href="a00482_source.html#l00161">regex_constants.h:161</a></div></div> <div class="ttc" id="a02460_html"><div class="ttname"><a href="a02460.html">std::basic_ostream< char ></a></div></div> <div class="ttc" id="a06844_html"><div class="ttname"><a href="a06844.html">std::__detail::_Scanner</a></div><div class="ttdoc">Scans an input range for regex tokens.</div><div class="ttdef"><b>Definition:</b> <a href="a00494_source.html#l00210">regex_scanner.h:210</a></div></div> <div class="ttc" id="a07764_html"><div class="ttname"><a href="a07764.html">std::pair< char, _TokenT ></a></div></div> </div><!-- fragment --></div><!-- contents --> </div><!-- 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