old-autovect-branch/libstdc++-v3/testsuite/27_io/basic_istream/sentry/pod/1.cc

   1 // 1999-10-14 bkoz
   2
   3 // Copyright (C) 1999, 2001, 2003, 2005 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // 27.6.1.1.2 class basic_istream::sentry
  31
  32 #include <istream>
  33 #include <sstream>
  34 #include <ext/pod_char_traits.h>
  35 #include <testsuite_hooks.h>
  36 #include <testsuite_character.h>
  37
  38 void test01()
  39 {
  40   using namespace std;
  41   using __gnu_test::pod_ushort;
  42   typedef basic_string<pod_ushort>      string_type;
  43   typedef basic_stringbuf<pod_ushort>   stringbuf_type;
  44   typedef basic_istream<pod_ushort>     istream_type;
  45
  46   bool test __attribute__((unused)) = true;
  47
  48
  49   const string_type str01;
  50   stringbuf_type strbuf01;
  51   stringbuf_type strbuf02(str01);
  52   istream_type istr01(&strbuf01);
  53   istream_type istr02(&strbuf02);
  54
  55   // test negatives
  56   try
  57     {
  58       istream_type::sentry sentry01(istr01);
  59     }
  60   catch (std::bad_cast& obj)
  61     {
  62       // Ok, throws bad_cast because locale has no ctype facet.
  63     }
  64   catch (...)
  65     {
  66       VERIFY( false );
  67     }
  68
  69   try
  70     {
  71       istream_type::sentry sentry02(istr01, true);
  72     }
  73   catch (std::bad_cast& obj)
  74     {
  75       // Ok, throws bad_cast because locale has no ctype facet.
  76     }
  77   catch (...)
  78     {
  79       VERIFY( false );
  80     }
  81
  82   // imbued.
  83   const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
  84   istr01.imbue(loc);
  85   try
  86     {
  87       istream_type::sentry sentry01(istr01);
  88       VERIFY( bool(sentry01) == false );
  89     }
  90   catch (...)
  91     {
  92       VERIFY( false );
  93     }
  94
  95   try
  96     {
  97       istream_type::sentry sentry02(istr01, true);
  98       VERIFY( bool(sentry02) == false );
  99     }
 100   catch (...)
 101     {
 102       VERIFY( false );
 103     }
 104
 105   // test positive
 106   try
 107     {
 108       istream_type::sentry sentry03(istr02);
 109     }
 110   catch (std::bad_cast& obj)
 111     {
 112       // Ok, throws bad_cast because locale has no ctype facet.
 113     }
 114   catch (...)
 115     {
 116       VERIFY( false );
 117     }
 118
 119   try
 120     {
 121       istream_type::sentry sentry04(istr02, true);
 122     }
 123   catch (std::bad_cast& obj)
 124     {
 125       // Ok, throws bad_cast because locale has no ctype facet.
 126     }
 127   catch (...)
 128     {
 129       VERIFY( false );
 130     }
 131
 132   // imbued.
 133   istr02.imbue(loc);
 134   try
 135     {
 136       istr02.clear();
 137       istream_type::sentry sentry03(istr02);
 138       // ... as eofbit set.
 139       VERIFY( bool(sentry03) == false );
 140     }
 141   catch (...)
 142     {
 143       VERIFY( false );
 144     }
 145
 146   try
 147     {
 148       istr02.clear();
 149       istream_type::sentry sentry04(istr02, true);
 150       VERIFY( bool(sentry04) == true );
 151     }
 152   catch (...)
 153     {
 154       VERIFY( false );
 155     }
 156 }
 157
 158 #if !__GXX_WEAK__
 159 // Explicitly instantiate for systems with no COMDAT or weak support.
 160 template
 161   std::basic_string<__gnu_test::pod_ushort>::size_type
 162   std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_max_size;
 163
 164 template
 165   __gnu_test::pod_ushort
 166   std::basic_string<__gnu_test::pod_ushort>::_Rep::_S_terminal;
 167 #endif
 168
 169 int main()
 170 {
 171   test01();
 172   return 0;
 173 }