libstdc++-v3/testsuite/28_regex/iterators/regex_iterator/char/string_position_01.cc

   1 // { dg-options "-std=gnu++11" }
   2
   3 //
   4 // 2013-07-25  Tim Shen <timshen91@gmail.com>
   5 //
   6 // Copyright (C) 2013-2014 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 // 28.12.1 regex_iterator
  24 // Tests iter->position() behavior
  25
  26 #include <regex>
  27 #include <tuple>
  28 #include <testsuite_hooks.h>
  29
  30 void
  31 test01()
  32 {
  33   bool test __attribute__((unused)) = true;
  34
  35   std::regex re("asdf");
  36   std::string s("asdfasdfasdf");
  37   int i = 0;
  38   for (std::sregex_iterator it(s.begin(), s.end(), re);
  39        it != std::sregex_iterator();
  40        ++it, i++) {
  41       VERIFY( it->position() == 4 * i );
  42   }
  43 }
  44
  45 // PR libstdc++/64239
  46 void
  47 test02()
  48 {
  49   bool test __attribute__((unused)) = true;
  50
  51   std::regex re("\\w+");
  52   std::string s("-a-b-c-");
  53
  54   std::tuple<int, int, const char*> expected[] =
  55   {
  56     std::make_tuple(1, 1, "a"),
  57     std::make_tuple(3, 1, "b"),
  58     std::make_tuple(5, 1, "c"),
  59   };
  60
  61   int i = 0;
  62   for (auto it1 = std::sregex_iterator(s.begin(), s.end(), re),
  63        end = std::sregex_iterator(); it1 != end; ++it1, i++)
  64     {
  65       auto it2 = it1;
  66       VERIFY(it1->position() == std::get<0>(expected[i]));
  67       VERIFY(it1->length() == std::get<1>(expected[i]));
  68       VERIFY(it1->str() == std::get<2>(expected[i]));
  69       VERIFY(it2->position() == std::get<0>(expected[i]));
  70       VERIFY(it2->length() == std::get<1>(expected[i]));
  71       VERIFY(it2->str() == std::get<2>(expected[i]));
  72     }
  73 }
  74
  75 void
  76 test03()
  77 {
  78   bool test __attribute__((unused)) = true;
  79
  80   std::smatch m;
  81   std::string s = "abcde";
  82   std::regex_search(s, m, std::regex("bcd"));
  83   VERIFY(m.position() == 1);
  84   VERIFY(m.position() == m.prefix().length());
  85 }
  86
  87 int
  88 main()
  89 {
  90   test01();
  91   test02();
  92   test03();
  93   return 0;
  94 }