libstdc++-v3/testsuite/28_regex/algorithms/regex_match/extended/string_dispatch_01.cc

   1 // { dg-options "-std=gnu++11" }
   2
   3 //
   4 // 2013-07-29  Tim Shen <timshen91@gmail.com>
   5 //
   6 // Copyright (C) 2013 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 // 28.11.2 regex_match
  24 // Tests Extended automatic matcher dispatching against a std::string target.
  25
  26 #include <regex>
  27 #include <testsuite_hooks.h>
  28
  29 using namespace std;
  30
  31 template<typename _Bi_iter, typename _Alloc,
  32          typename _Ch_type, typename _Rx_traits>
  33   void
  34   fake_match(_Bi_iter                                 __s,
  35              _Bi_iter                                 __e,
  36              match_results<_Bi_iter, _Alloc>&         __m,
  37              const basic_regex<_Ch_type, _Rx_traits>& __re,
  38              regex_constants::match_flag_type         __flags
  39                             = regex_constants::match_default)
  40   {
  41     __detail::_AutomatonPtr __a = __re._M_get_automaton();
  42     __detail::_Automaton::_SizeT __sz = __a->_M_sub_count();
  43     __detail::_SpecializedCursor<_Bi_iter> __cs(__s, __e);
  44     __detail::_SpecializedResults<_Bi_iter, _Alloc> __r(__sz, __cs, __m);
  45     VERIFY( dynamic_cast<__detail::_DFSMatcher *>(
  46               &*__a->_M_get_matcher(__cs, __r, __a, __flags)) != nullptr );
  47   }
  48
  49 void
  50 test01()
  51 {
  52   bool test __attribute__((unused)) = true;
  53
  54   regex  re("()(one(.*))abc\\1"); // backref cause DFS
  55   const string target("onetwoabc");
  56   smatch m;
  57   fake_match(target.begin(), target.end(), m, re);
  58
  59   regex_match(target, m, re);
  60   VERIFY( m[2].matched );
  61   VERIFY( m[3].matched );
  62   VERIFY( std::string(m[2].first, m[2].second) == "onetwo" );
  63   VERIFY( std::string(m[3].first, m[3].second) == "two" );
  64 }
  65
  66 int
  67 main()
  68 {
  69   test01();
  70   return 0;
  71 }