libstdc++-v3/testsuite/28_regex/algorithms/regex_match/ecma/char/backref.cc

   1 // { dg-do run { target c++11 } }
   2
   3 //
   4 // 2013-09-02  Tim Shen <timshen91@gmail.com>
   5 //
   6 // Copyright (C) 2013-2020 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 ECMAScript back-refernce against a std::string.
  25
  26 #include <regex>
  27 #include <testsuite_hooks.h>
  28 #include <testsuite_regex.h>
  29
  30 using namespace __gnu_test;
  31 using namespace std;
  32
  33 void
  34 test01()
  35 {
  36   regex re("([A-Z])\\1*");
  37   smatch m;
  38   {
  39     string s = "AAAA";
  40     regex_match(s, m, re);
  41     VERIFY( m[0].matched );
  42     VERIFY( m[1].matched );
  43     VERIFY( std::string(m[0].first, m[0].second) == "AAAA" );
  44     VERIFY( std::string(m[1].first, m[1].second) == "A" );
  45   }
  46   {
  47     string s = "BBBB";
  48     regex_match(s, m, re);
  49     VERIFY( m[0].matched );
  50     VERIFY( m[1].matched );
  51     VERIFY( std::string(m[0].first, m[0].second) == "BBBB" );
  52     VERIFY( std::string(m[1].first, m[1].second) == "B" );
  53   }
  54   {
  55     string s = "BBBA";
  56     regex_match(s, m, re);
  57     VERIFY( !m[0].matched );
  58     VERIFY( !m[1].matched );
  59   }
  60   {
  61     try
  62       {
  63         regex re("(a(b)(c\\1(d)))");
  64         VERIFY( false );
  65       }
  66     catch (...)
  67       {
  68         VERIFY( true );
  69       }
  70   }
  71 }
  72
  73 int
  74 main()
  75 {
  76   test01();
  77   return 0;
  78 }