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

   1 // { dg-options "-std=gnu++11" }
   2 // { dg-do run }
   3
   4 //
   5 // 2014-01-07  Tim Shen <timshen91@gmail.com>
   6 //
   7 // Copyright (C) 2010-2016 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14 //
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19 //
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24 // 28.3 Requirements [re.req]
  25 // 28.2 (4) Table 127 - Regular expression traits class requirements
  26 // 28.7 Class template regex_traits [re.traits]
  27
  28 #include <regex>
  29 #include <string>
  30 #include <testsuite_hooks.h>
  31
  32 using namespace std;
  33
  34 template<typename CharT>
  35   class MyRegexTraits
  36   : public regex_traits<CharT>
  37   {
  38   public:
  39     CharT
  40     translate(CharT c) const
  41     {
  42       return c+1;
  43     }
  44   };
  45
  46 void
  47 test01()
  48 {
  49   bool test __attribute__((unused)) = true;
  50
  51   basic_regex<wchar_t, MyRegexTraits<wchar_t>> re(L".");
  52   VERIFY(!regex_match(L"\n", re));
  53   VERIFY(!regex_match(L"\r", re));
  54   VERIFY(!regex_match(L"\u2028", re));
  55   VERIFY(!regex_match(L"\u2029", re));
  56 }
  57
  58 struct MyCtype : std::ctype<wchar_t>
  59 {
  60   char
  61   do_narrow(wchar_t c, char dflt) const override
  62   {
  63     if (c >= 256)
  64       return dflt;
  65     return ((char)c)+1;
  66   }
  67 };
  68
  69 void
  70 test02()
  71 {
  72   std::locale loc(std::locale(), new MyCtype);
  73   std::regex_traits<wchar_t> traits;
  74   traits.imbue(loc);
  75   wchar_t wch = L'p';
  76   VERIFY(traits.lookup_collatename(&wch, &wch+1) == L"q");
  77   std::wstring ws = L"chfhs"; // chars of "digit" shifted by 1.
  78   VERIFY(traits.lookup_classname(ws.begin(), ws.end()) != 0);
  79 }
  80
  81 int main()
  82 {
  83   test01();
  84   test02();
  85   return 0;
  86 }