libstdc++-v3/testsuite/22_locale/codecvt/length/char/2.cc

   1 // 2003-02-06  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003 Free Software Foundation
   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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
  22
  23 #include <locale>
  24 #include <testsuite_hooks.h>
  25
  26 bool length_called = false;
  27
  28 class length_codecvt : public std::codecvt<char, char, std::mbstate_t>
  29 {
  30   typedef std::codecvt<char, char, std::mbstate_t> c_codecvt;
  31
  32 public:
  33   // DR75: type of first argument of do_length is state_type&
  34   virtual int do_length(state_type& state, const extern_type* from,
  35                         const extern_type* end, std::size_t max) const
  36   {
  37     length_called = true;
  38     return c_codecvt::do_length(state, from, end, max);
  39   }
  40 };
  41
  42 // Required instantiation, degenerate conversion.
  43 // codecvt<char, char, mbstate_t>
  44 //
  45 // libstdc++/9224
  46 void test02()
  47 {
  48   using namespace std;
  49   typedef codecvt_base::result                  result;
  50   typedef codecvt<char, char, mbstate_t>        c_codecvt;
  51
  52   bool test __attribute__((unused)) = true;
  53   const char*           c_lit = "black pearl jasmine tea";
  54   int                   size = 25;
  55
  56   locale                loc (locale::classic(), new length_codecvt);
  57   c_codecvt::state_type state;
  58   const c_codecvt*      cvt = &use_facet<c_codecvt>(loc);
  59
  60   length_called = false;
  61   cvt->length(state, c_lit, c_lit + size, 5);
  62   VERIFY( length_called );
  63 }
  64
  65 int main ()
  66 {
  67   test02();
  68   return 0;
  69 }