libstdc++-v3/testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2013-2022 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // basic_string_view find_first_of
  21
  22 #include <string_view>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test02()
  27 {
  28   typedef std::wstring_view::size_type csize_type;
  29   csize_type npos = std::wstring_view::npos;
  30   csize_type csz01, csz02;
  31
  32   const wchar_t str_lit01[] = L"mave";
  33   const std::wstring_view str01(L"mavericks, santa cruz");
  34   std::wstring_view str02(str_lit01);
  35   std::wstring_view str03(L"s, s");
  36   std::wstring_view str04;
  37
  38   // size_type find_first_of(const wstring_view&, size_type pos = 0) const;
  39   std::wstring_view str05(L"xena rulez");
  40   csz01 = str01.find_first_of(str01);
  41   VERIFY( csz01 == 0 );
  42   csz01 = str01.find_first_of(str01, 4);
  43   VERIFY( csz01 == 4 );
  44   csz01 = str01.find_first_of(str02, 0);
  45   VERIFY( csz01 == 0 );
  46   csz01 = str01.find_first_of(str02, 3);
  47   VERIFY( csz01 == 3 );
  48   csz01 = str01.find_first_of(str03, 0);
  49   VERIFY( csz01 == 8 );
  50   csz01 = str01.find_first_of(str03, 3);
  51   VERIFY( csz01 == 8 );
  52   csz01 = str01.find_first_of(str03, 12);
  53   VERIFY( csz01 == 16 );
  54   csz01 = str01.find_first_of(str05, 0);
  55   VERIFY( csz01 == 1 );
  56   csz01 = str01.find_first_of(str05, 4);
  57   VERIFY( csz01 == 4 );
  58
  59   // An empty string_view consists of no characters
  60   // therefore it should be found at every point in a string_view,
  61   // except beyond the end
  62   // However, str1.find_first_of(str2,pos) finds the first character in
  63   // str1 (starting at pos) that exists in str2, which is none for empty str2
  64   csz01 = str01.find_first_of(str04, 0);
  65   VERIFY( csz01 == npos );
  66   csz01 = str01.find_first_of(str04, 5);
  67   VERIFY( csz01 == npos );
  68
  69   // size_type find_first_of(const wchar_t* s, size_type pos, size_type n) const;
  70   csz01 = str01.find_first_of(str_lit01, 0, 3);
  71   VERIFY( csz01 == 0 );
  72   csz01 = str01.find_first_of(str_lit01, 3, 0);
  73   VERIFY( csz01 == npos );
  74
  75   // size_type find_first_of(const wchar_t* s, size_type pos = 0) const;
  76   csz01 = str01.find_first_of(str_lit01);
  77   VERIFY( csz01 == 0 );
  78   csz01 = str01.find_first_of(str_lit01, 3);
  79   VERIFY( csz01 == 3 );
  80
  81   // size_type find_first_of(wchar_t c, size_type pos = 0) const;
  82   csz01 = str01.find_first_of(L'z');
  83   csz02 = str01.size() - 1;
  84   VERIFY( csz01 == csz02 );
  85 }
  86
  87 constexpr bool
  88 test04()
  89 {
  90   typedef std::wstring_view::size_type csize_type;
  91   csize_type npos = std::wstring_view::npos;
  92   csize_type csz01 = 0, csz02 = 0;
  93
  94   const wchar_t str_lit01[] = L"mave";
  95   const std::wstring_view str01(L"mavericks, santa cruz");
  96   std::wstring_view str02(str_lit01);
  97   std::wstring_view str03(L"s, s");
  98   std::wstring_view str04;
  99
 100 #undef VERIFY
 101 #define VERIFY(x) if(!(x)) return false
 102
 103   // size_type find_first_of(const wstring_view&, size_type pos = 0) const;
 104   std::wstring_view str05(L"xena rulez");
 105   csz01 = str01.find_first_of(str01);
 106   VERIFY( csz01 == 0 );
 107   csz01 = str01.find_first_of(str01, 4);
 108   VERIFY( csz01 == 4 );
 109   csz01 = str01.find_first_of(str02, 0);
 110   VERIFY( csz01 == 0 );
 111   csz01 = str01.find_first_of(str02, 3);
 112   VERIFY( csz01 == 3 );
 113   csz01 = str01.find_first_of(str03, 0);
 114   VERIFY( csz01 == 8 );
 115   csz01 = str01.find_first_of(str03, 3);
 116   VERIFY( csz01 == 8 );
 117   csz01 = str01.find_first_of(str03, 12);
 118   VERIFY( csz01 == 16 );
 119   csz01 = str01.find_first_of(str05, 0);
 120   VERIFY( csz01 == 1 );
 121   csz01 = str01.find_first_of(str05, 4);
 122   VERIFY( csz01 == 4 );
 123
 124   // An empty string_view consists of no characters
 125   // therefore it should be found at every point in a string_view,
 126   // except beyond the end
 127   // However, str1.find_first_of(str2,pos) finds the first character in
 128   // str1 (starting at pos) that exists in str2, which is none for empty str2
 129   csz01 = str01.find_first_of(str04, 0);
 130   VERIFY( csz01 == npos );
 131   csz01 = str01.find_first_of(str04, 5);
 132   VERIFY( csz01 == npos );
 133
 134   // size_type find_first_of(const wchar_t* s, size_type pos, size_type n) const;
 135   csz01 = str01.find_first_of(str_lit01, 0, 3);
 136   VERIFY( csz01 == 0 );
 137   csz01 = str01.find_first_of(str_lit01, 3, 0);
 138   VERIFY( csz01 == npos );
 139
 140   // size_type find_first_of(const wchar_t* s, size_type pos = 0) const;
 141   csz01 = str01.find_first_of(str_lit01);
 142   VERIFY( csz01 == 0 );
 143   csz01 = str01.find_first_of(str_lit01, 3);
 144   VERIFY( csz01 == 3 );
 145
 146   // size_type find_first_of(wchar_t c, size_type pos = 0) const;
 147   csz01 = str01.find_first_of(L'z');
 148   csz02 = str01.size() - 1;
 149   VERIFY( csz01 == csz02 );
 150
 151   return true;
 152 }
 153
 154 int
 155 main()
 156 {
 157   test02();
 158   static_assert( test04() );
 159
 160   return 0;
 161 }