libstdc++-v3/testsuite/27_io/basic_ios/cons/char/3.cc

   1 // 2001-06-05 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001-2021 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
  21 // 27.4.2.1.6 class ios_base::init
  22
  23 #include <sstream>
  24 #include <typeinfo>
  25 #include <cstring>
  26 #include <testsuite_hooks.h>
  27
  28 // char_traits specialization
  29 namespace std
  30 {
  31   template<>
  32     struct char_traits<unsigned short>
  33     {
  34       typedef unsigned short    char_type;
  35       // Unsigned as wint_t in unsigned.
  36       typedef unsigned long     int_type;
  37       typedef streampos         pos_type;
  38       typedef streamoff         off_type;
  39       typedef mbstate_t         state_type;
  40
  41       static void
  42       assign(char_type& __c1, const char_type& __c2)
  43       { __c1 = __c2; }
  44
  45       static bool
  46       eq(const char_type& __c1, const char_type& __c2)
  47       { return __c1 == __c2; }
  48
  49       static bool
  50       lt(const char_type& __c1, const char_type& __c2)
  51       { return __c1 < __c2; }
  52
  53       static int
  54       compare(const char_type* __s1, const char_type* __s2, size_t __n)
  55       {
  56         for (size_t __i = 0; __i < __n; ++__i)
  57           if (!eq(__s1[__i], __s2[__i]))
  58             return lt(__s1[__i], __s2[__i]) ? -1 : 1;
  59         return 0;
  60       }
  61
  62       static size_t
  63       length(const char_type* __s)
  64       {
  65         const char_type* __p = __s;
  66         while (__p)
  67           ++__p;
  68         return (__p - __s);
  69       }
  70
  71       static const char_type*
  72       find(const char_type* __s, size_t __n, const char_type& __a)
  73       {
  74         for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
  75           if (*__p == __a) return __p;
  76         return 0;
  77       }
  78
  79       static char_type*
  80       move(char_type* __s1, const char_type* __s2, size_t __n)
  81       { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); }
  82
  83       static char_type*
  84       copy(char_type* __s1, const char_type* __s2, size_t __n)
  85       { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); }
  86
  87       static char_type*
  88       assign(char_type* __s, size_t __n, char_type __a)
  89       {
  90         for (char_type* __p = __s; __p < __s + __n; ++__p)
  91           assign(*__p, __a);
  92         return __s;
  93       }
  94
  95       static char_type
  96       to_char_type(const int_type&)
  97       { return char_type(); }
  98
  99       static int_type
 100       to_int_type(const char_type&) { return int_type(); }
 101
 102       static bool
 103       eq_int_type(const int_type& __c1, const int_type& __c2)
 104       { return __c1 == __c2; }
 105
 106       static int_type
 107       eof() { return static_cast<int_type>(-1); }
 108
 109       static int_type
 110       not_eof(const int_type& __c)
 111       { return eq_int_type(__c, eof()) ? int_type(0) : __c; }
 112     };
 113 } // namespace std
 114
 115 // Non-required instantiations don't have the required facets inbued,
 116 // by default, into the locale object.
 117 // See 27.4.4.1
 118
 119 void test02()
 120 {
 121   bool test = true;
 122
 123   // 02: Calls basic_ios::init, which may call ctype<char_type>...
 124   try
 125     {
 126       std::basic_string<unsigned short>         str;
 127       std::basic_ostringstream<unsigned short>  oss(str);
 128
 129       // Try each member functions for unformatted io.
 130       // put
 131       oss.put(324);
 132
 133       // write
 134       const unsigned short us[4] = {1246, 433, 520, 0};
 135       oss.write(us, 4);
 136
 137       // flush
 138       oss.flush();
 139     }
 140   catch(const std::bad_cast& obj)
 141     {
 142       // Should be able to do the above without calling fill() and
 143       // forcing a call to widen...
 144       test = false;
 145     }
 146   catch(...)
 147     {
 148       test = false;
 149     }
 150   VERIFY( test );
 151 }
 152
 153 #if !__GXX_WEAK__
 154 // Explicitly instantiate for systems with no COMDAT or weak support.
 155 template
 156   const std::basic_string<unsigned short>::size_type
 157   std::basic_string<unsigned short>::_Rep::_S_max_size;
 158
 159 template
 160   const unsigned short
 161   std::basic_string<unsigned short>::_Rep::_S_terminal;
 162 #endif
 163
 164 int main()
 165 {
 166   test02();
 167   return 0;
 168 }