libstdc++-v3/testsuite/21_strings/char_traits/requirements/short/1.cc

   1 // 1999-06-03 bkoz
   2 // 2003-07-22 Matt Austern
   3
   4 // Copyright (C) 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22 // 21.1.1 Character traits requirements
  23 // Make sure we can instantiate char_traits and basic_string for
  24 // charT = 'short', and make sure the char_traits memeber functions
  25 // satisfy the requirements of 21.1.1.
  26
  27 #include <string>
  28 #include <testsuite_hooks.h>
  29
  30 void test02(void)
  31 {
  32   bool test __attribute__((unused)) = true;
  33
  34   // 21.1.1 character traits requirements
  35
  36   // Key for decoding what function signatures really mean:
  37   // X                == char_traits<_CharT>
  38   // [c,d]    == _CharT
  39   // [p,q]    == const _CharT*
  40   // s                == _CharT*
  41   // [n,i,j]  == size_t
  42   // f                == X::int_type
  43   // pos      == X::pos_type
  44   // state    == X::state_type
  45
  46   // void X::assign(short c, short d)
  47   // assigns c = d;
  48   short c1 = 'z';
  49   short c2 = 'u';
  50   VERIFY( c1 != c2 );
  51   std::char_traits<short>::assign(c1,c2);
  52   VERIFY( c1 == 'u' );
  53
  54   // bool X::eq(short c, short d)
  55   c1 = 'z';
  56   c2 = 'u';
  57   VERIFY ( !std::char_traits<short>::eq(c1, c2) );
  58   VERIFY ( std::char_traits<short>::eq(c1, c1) );
  59   VERIFY ( std::char_traits<short>::eq(c2, c2) );
  60
  61   // bool X::lt(short c, short d)
  62   c1 = 'z';
  63   c2 = 'u';
  64   VERIFY ( std::char_traits<short>::lt(c2, c1) );
  65   VERIFY ( !std::char_traits<short>::lt(c1, c2) );
  66   VERIFY ( !std::char_traits<short>::lt(c1, c1) );
  67   VERIFY ( !std::char_traits<short>::lt(c2, c2) );
  68
  69   // short* X::move(short* s, const short* p, size_t n)
  70   // for each i in [0,n) performs X::assign(s[i], p[i]). Copies
  71   // correctly even where p is in [s, s + n), and yields s.
  72   short array1[] = {'z', 'u', 'm', 'a', ' ', 'b', 'e', 'a', 'c', 'h',  0};
  73   const std::basic_string<short> str_01(array1 + 0, array1 + 10);
  74
  75   const short str_lit1[] = {'m', 'o', 'n', 't', 'a', 'r', 'a', ' ', 'a', 'n', 'd', ' ', 'o', 'c', 'e', 'a', 'n', ' ', 'b', 'e', 'a', 'c', 'h', 0};
  76
  77   int len = sizeof(str_lit1)/sizeof(short) + sizeof(array1)/sizeof(short) - 1;
  78   // two terminating chars
  79   short array2[len];
  80
  81   VERIFY( str_lit1[0] == 'm' );
  82   c1 = array2[0];
  83   c2 = str_lit1[0];
  84   short c3 = array2[1];
  85   short c4 = str_lit1[1];
  86   std::char_traits<short>::move(array2, str_lit1, 0);
  87   VERIFY( array2[0] == c1 );
  88   VERIFY( str_lit1[0] == c2 );
  89   std::char_traits<short>::move(array2, str_lit1, 1);
  90   VERIFY( array2[0] == c2 );
  91   VERIFY( str_lit1[0] == c2 );
  92   VERIFY( array2[1] == c3 );
  93   VERIFY( str_lit1[1] == c4 );
  94   std::char_traits<short>::move(array2, str_lit1, 2);
  95   VERIFY( array2[0] == c2 );
  96   VERIFY( str_lit1[0] == c2 );
  97   VERIFY( array2[1] == c4 );
  98   VERIFY( str_lit1[1] == c4 );
  99
 100   short* pc1 = array1 + 1;
 101   c1 = pc1[0];
 102   c2 = array1[0];
 103   VERIFY( c1 != c2 );
 104   short* pc2 = std::char_traits<short>::move(array1, pc1, 0);
 105   c3 = pc1[0];
 106   c4 = array1[0];
 107   VERIFY( c1 == c3 );
 108   VERIFY( c2 == c4 );
 109   VERIFY( pc2 == array1 );
 110
 111   c1 = pc1[0];
 112   c2 = array1[0];
 113   short* pc3 = pc1;
 114   pc2 = std::char_traits<short>::move(array1, pc1, 10);
 115   c3 = pc1[0];
 116   c4 = array1[0];
 117   VERIFY( c1 != c3 ); // underlying short array changed.
 118   VERIFY( c4 != c3 );
 119   VERIFY( pc2 == array1 );
 120   VERIFY( pc3 == pc1 ); // but pointers o-tay
 121   c1 = *(str_01.data());
 122   c2 = array1[0];
 123   VERIFY( c1 != c2 );
 124
 125   // size_t X::length(const short* p)
 126   len = std::char_traits<short>::length(str_lit1);
 127   VERIFY( len == sizeof(str_lit1) / sizeof(short) - 1 );
 128
 129   // const short* X::find(const short* s, size_t n, short c)
 130   const int N4 = sizeof(str_lit1) / sizeof(short);
 131   const short* pc4 = std::char_traits<short>::find(str_lit1, N4, 'a');
 132   VERIFY( pc4 != 0 );
 133   VERIFY( *pc4 == 'a' );
 134
 135   pc4 = std::char_traits<short>::find(str_lit1, N4, 0x0a73);
 136   VERIFY( pc4 == 0 );
 137
 138   // short* X::assign(short* s, size_t n, short c)
 139   len = sizeof(array2) / sizeof(short);
 140   memset(array2, 0xaf, len * sizeof(short));
 141   VERIFY( array2[0] != 0x15a8 );
 142
 143   pc1 = std::char_traits<short>::assign (array2, len, 0x15a8);
 144   VERIFY( pc1 == array2 );
 145   for (int i = 0; i < len; ++i)
 146     VERIFY( array2[i] == 0x15a8 );
 147
 148   // short* X::copy(short* s, const short* p, size_t n)
 149   int n1 = sizeof(str_lit1) / sizeof(short);
 150   pc1 = std::char_traits<short>::copy(array2, str_lit1, n1);
 151   len = std::char_traits<short>::length(array2);
 152   VERIFY( len == n1 - 1 );
 153   for (int i = 0; i < len; ++i)
 154     VERIFY( str_lit1[i] == array2[i] );
 155
 156   // int X::compare(const short* p, const short* q, size_t n)
 157   const short* pconst1 = str_01.data();
 158   const short* pconst2 = str_lit1;
 159
 160   VERIFY( std::char_traits<short>::compare(pconst1, pconst2, 10) > 0 );
 161   VERIFY( std::char_traits<short>::compare(pconst2, pconst1, 10) < 0 );
 162   VERIFY( std::char_traits<short>::compare(pconst1, pconst1, 10) == 0 );
 163   VERIFY( std::char_traits<short>::compare(pconst2, pconst2, 10) == 0 );
 164 }
 165
 166
 167
 168 int main()
 169 {
 170   test02();
 171   return 0;
 172 }