libstdc++-v3/testsuite/28_regex/traits/wchar_t/user_defined.cc

   1 // { dg-do run { target c++11 } }
   2
   3 //
   4 // 2014-01-07  Tim Shen <timshen91@gmail.com>
   5 //
   6 // Copyright (C) 2010-2016 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 // 28.3 Requirements [re.req]
  24 // 28.2 (4) Table 127 - Regular expression traits class requirements
  25 // 28.7 Class template regex_traits [re.traits]
  26
  27 #include <regex>
  28 #include <string>
  29 #include <testsuite_hooks.h>
  30
  31 using namespace std;
  32
  33 template<typename CharT>
  34   class MyRegexTraits
  35   : public regex_traits<CharT>
  36   {
  37   public:
  38     CharT
  39     translate(CharT c) const
  40     {
  41       return c+1;
  42     }
  43   };
  44
  45 void
  46 test01()
  47 {
  48   basic_regex<wchar_t, MyRegexTraits<wchar_t>> re(L".");
  49   VERIFY(!regex_match(L"\n", re));
  50   VERIFY(!regex_match(L"\r", re));
  51   VERIFY(!regex_match(L"\u2028", re));
  52   VERIFY(!regex_match(L"\u2029", re));
  53 }
  54
  55 struct MyCtype : std::ctype<wchar_t>
  56 {
  57   char
  58   do_narrow(wchar_t c, char dflt) const override
  59   {
  60     if (c >= 256)
  61       return dflt;
  62     return ((char)c)+1;
  63   }
  64 };
  65
  66 void
  67 test02()
  68 {
  69   std::locale loc(std::locale(), new MyCtype);
  70   std::regex_traits<wchar_t> traits;
  71   traits.imbue(loc);
  72   wchar_t wch = L'p';
  73   VERIFY(traits.lookup_collatename(&wch, &wch+1) == L"q");
  74   std::wstring ws = L"chfhs"; // chars of "digit" shifted by 1.
  75   VERIFY(traits.lookup_classname(ws.begin(), ws.end()) != 0);
  76 }
  77
  78 int main()
  79 {
  80   test01();
  81   test02();
  82   return 0;
  83 }