test/std/re/re.traits/lookup_classname.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // <regex>
  11
  12 // template <class charT> struct regex_traits;
  13
  14 // template <class ForwardIterator>
  15 //   char_class_type
  16 //   lookup_classname(ForwardIterator first, ForwardIterator last,
  17 //                    bool icase = false) const;
  18
  19 #include <regex>
  20 #include <cassert>
  21 #include "test_macros.h"
  22 #include "test_iterators.h"
  23
  24 template <class char_type>
  25 void
  26 test(const char_type* A,
  27      typename std::regex_traits<char_type>::char_class_type expected,
  28      bool icase = false)
  29 {
  30     std::regex_traits<char_type> t;
  31     typedef forward_iterator<const char_type*> F;
  32     assert(t.lookup_classname(F(A), F(A + t.length(A)), icase) == expected);
  33 }
  34
  35 int main()
  36 {
  37 //  if __regex_word is not distinct from all the classes, bad things happen
  38 //  See https://bugs.llvm.org/show_bug.cgi?id=26476 for an example.
  39     assert((std::ctype_base::space  & std::regex_traits<char>::__regex_word) == 0);
  40     assert((std::ctype_base::print  & std::regex_traits<char>::__regex_word) == 0);
  41     assert((std::ctype_base::cntrl  & std::regex_traits<char>::__regex_word) == 0);
  42     assert((std::ctype_base::upper  & std::regex_traits<char>::__regex_word) == 0);
  43     assert((std::ctype_base::lower  & std::regex_traits<char>::__regex_word) == 0);
  44     assert((std::ctype_base::alpha  & std::regex_traits<char>::__regex_word) == 0);
  45     assert((std::ctype_base::digit  & std::regex_traits<char>::__regex_word) == 0);
  46     assert((std::ctype_base::punct  & std::regex_traits<char>::__regex_word) == 0);
  47     assert((std::ctype_base::xdigit & std::regex_traits<char>::__regex_word) == 0);
  48     assert((std::ctype_base::blank  & std::regex_traits<char>::__regex_word) == 0);
  49
  50     test("d", std::ctype_base::digit);
  51     test("D", std::ctype_base::digit);
  52     test("d", std::ctype_base::digit, true);
  53     test("D", std::ctype_base::digit, true);
  54
  55     test("w", std::regex_traits<char>::__regex_word | std::ctype_base::alnum
  56                       | std::ctype_base::upper | std::ctype_base::lower);
  57     test("W", std::regex_traits<char>::__regex_word | std::ctype_base::alnum
  58                       | std::ctype_base::upper | std::ctype_base::lower);
  59     test("w", std::regex_traits<char>::__regex_word | std::ctype_base::alnum
  60                       | std::ctype_base::upper | std::ctype_base::lower, true);
  61     test("W", std::regex_traits<char>::__regex_word | std::ctype_base::alnum
  62                       | std::ctype_base::upper | std::ctype_base::lower, true);
  63
  64     test("s", std::ctype_base::space);
  65     test("S", std::ctype_base::space);
  66     test("s", std::ctype_base::space, true);
  67     test("S", std::ctype_base::space, true);
  68
  69     test("alnum", std::ctype_base::alnum);
  70     test("AlNum", std::ctype_base::alnum);
  71     test("alnum", std::ctype_base::alnum, true);
  72     test("AlNum", std::ctype_base::alnum, true);
  73
  74     test("alpha", std::ctype_base::alpha);
  75     test("Alpha", std::ctype_base::alpha);
  76     test("alpha", std::ctype_base::alpha, true);
  77     test("Alpha", std::ctype_base::alpha, true);
  78
  79     test("blank", std::ctype_base::blank);
  80     test("Blank", std::ctype_base::blank);
  81     test("blank", std::ctype_base::blank, true);
  82     test("Blank", std::ctype_base::blank, true);
  83
  84     test("cntrl", std::ctype_base::cntrl);
  85     test("Cntrl", std::ctype_base::cntrl);
  86     test("cntrl", std::ctype_base::cntrl, true);
  87     test("Cntrl", std::ctype_base::cntrl, true);
  88
  89     test("digit", std::ctype_base::digit);
  90     test("Digit", std::ctype_base::digit);
  91     test("digit", std::ctype_base::digit, true);
  92     test("Digit", std::ctype_base::digit, true);
  93
  94     test("digit", std::ctype_base::digit);
  95     test("DIGIT", std::ctype_base::digit);
  96     test("digit", std::ctype_base::digit, true);
  97     test("Digit", std::ctype_base::digit, true);
  98
  99     test("graph", std::ctype_base::graph);
 100     test("GRAPH", std::ctype_base::graph);
 101     test("graph", std::ctype_base::graph, true);
 102     test("Graph", std::ctype_base::graph, true);
 103
 104     test("lower", std::ctype_base::lower);
 105     test("LOWER", std::ctype_base::lower);
 106     test("lower", std::ctype_base::lower | std::ctype_base::alpha, true);
 107     test("Lower", std::ctype_base::lower | std::ctype_base::alpha, true);
 108
 109     test("print", std::ctype_base::print);
 110     test("PRINT", std::ctype_base::print);
 111     test("print", std::ctype_base::print, true);
 112     test("Print", std::ctype_base::print, true);
 113
 114     test("punct", std::ctype_base::punct);
 115     test("PUNCT", std::ctype_base::punct);
 116     test("punct", std::ctype_base::punct, true);
 117     test("Punct", std::ctype_base::punct, true);
 118
 119     test("space", std::ctype_base::space);
 120     test("SPACE", std::ctype_base::space);
 121     test("space", std::ctype_base::space, true);
 122     test("Space", std::ctype_base::space, true);
 123
 124     test("upper", std::ctype_base::upper);
 125     test("UPPER", std::ctype_base::upper);
 126     test("upper", std::ctype_base::upper | std::ctype_base::alpha, true);
 127     test("Upper", std::ctype_base::upper | std::ctype_base::alpha, true);
 128
 129     test("xdigit", std::ctype_base::xdigit);
 130     test("XDIGIT", std::ctype_base::xdigit);
 131     test("xdigit", std::ctype_base::xdigit, true);
 132     test("Xdigit", std::ctype_base::xdigit, true);
 133
 134     test("dig", std::ctype_base::mask());
 135     test("", std::ctype_base::mask());
 136     test("digits", std::ctype_base::mask());
 137
 138     test(L"d", std::ctype_base::digit);
 139     test(L"D", std::ctype_base::digit);
 140     test(L"d", std::ctype_base::digit, true);
 141     test(L"D", std::ctype_base::digit, true);
 142
 143     test(L"w", std::regex_traits<wchar_t>::__regex_word | std::ctype_base::alnum
 144                       | std::ctype_base::upper | std::ctype_base::lower);
 145     test(L"W", std::regex_traits<wchar_t>::__regex_word | std::ctype_base::alnum
 146                       | std::ctype_base::upper | std::ctype_base::lower);
 147     test(L"w", std::regex_traits<wchar_t>::__regex_word | std::ctype_base::alnum
 148                       | std::ctype_base::upper | std::ctype_base::lower, true);
 149     test(L"W", std::regex_traits<wchar_t>::__regex_word | std::ctype_base::alnum
 150                       | std::ctype_base::upper | std::ctype_base::lower, true);
 151
 152     test(L"s", std::ctype_base::space);
 153     test(L"S", std::ctype_base::space);
 154     test(L"s", std::ctype_base::space, true);
 155     test(L"S", std::ctype_base::space, true);
 156
 157     test(L"alnum", std::ctype_base::alnum);
 158     test(L"AlNum", std::ctype_base::alnum);
 159     test(L"alnum", std::ctype_base::alnum, true);
 160     test(L"AlNum", std::ctype_base::alnum, true);
 161
 162     test(L"alpha", std::ctype_base::alpha);
 163     test(L"Alpha", std::ctype_base::alpha);
 164     test(L"alpha", std::ctype_base::alpha, true);
 165     test(L"Alpha", std::ctype_base::alpha, true);
 166
 167     test(L"blank", std::ctype_base::blank);
 168     test(L"Blank", std::ctype_base::blank);
 169     test(L"blank", std::ctype_base::blank, true);
 170     test(L"Blank", std::ctype_base::blank, true);
 171
 172     test(L"cntrl", std::ctype_base::cntrl);
 173     test(L"Cntrl", std::ctype_base::cntrl);
 174     test(L"cntrl", std::ctype_base::cntrl, true);
 175     test(L"Cntrl", std::ctype_base::cntrl, true);
 176
 177     test(L"digit", std::ctype_base::digit);
 178     test(L"Digit", std::ctype_base::digit);
 179     test(L"digit", std::ctype_base::digit, true);
 180     test(L"Digit", std::ctype_base::digit, true);
 181
 182     test(L"digit", std::ctype_base::digit);
 183     test(L"DIGIT", std::ctype_base::digit);
 184     test(L"digit", std::ctype_base::digit, true);
 185     test(L"Digit", std::ctype_base::digit, true);
 186
 187     test(L"graph", std::ctype_base::graph);
 188     test(L"GRAPH", std::ctype_base::graph);
 189     test(L"graph", std::ctype_base::graph, true);
 190     test(L"Graph", std::ctype_base::graph, true);
 191
 192     test(L"lower", std::ctype_base::lower);
 193     test(L"LOWER", std::ctype_base::lower);
 194     test(L"lower", std::ctype_base::lower | std::ctype_base::alpha, true);
 195     test(L"Lower", std::ctype_base::lower | std::ctype_base::alpha, true);
 196
 197     test(L"print", std::ctype_base::print);
 198     test(L"PRINT", std::ctype_base::print);
 199     test(L"print", std::ctype_base::print, true);
 200     test(L"Print", std::ctype_base::print, true);
 201
 202     test(L"punct", std::ctype_base::punct);
 203     test(L"PUNCT", std::ctype_base::punct);
 204     test(L"punct", std::ctype_base::punct, true);
 205     test(L"Punct", std::ctype_base::punct, true);
 206
 207     test(L"space", std::ctype_base::space);
 208     test(L"SPACE", std::ctype_base::space);
 209     test(L"space", std::ctype_base::space, true);
 210     test(L"Space", std::ctype_base::space, true);
 211
 212     test(L"upper", std::ctype_base::upper);
 213     test(L"UPPER", std::ctype_base::upper);
 214     test(L"upper", std::ctype_base::upper | std::ctype_base::alpha, true);
 215     test(L"Upper", std::ctype_base::upper | std::ctype_base::alpha, true);
 216
 217     test(L"xdigit", std::ctype_base::xdigit);
 218     test(L"XDIGIT", std::ctype_base::xdigit);
 219     test(L"xdigit", std::ctype_base::xdigit, true);
 220     test(L"Xdigit", std::ctype_base::xdigit, true);
 221
 222     test(L"dig", std::ctype_base::mask());
 223     test(L"", std::ctype_base::mask());
 224     test(L"digits", std::ctype_base::mask());
 225 }