libstdc++-v3/testsuite/22_locale/num_get/get/char/15.cc

   1 // 2004-03-01  Paolo Carlini  <pcarlini@suse.de>
   2
   3 // Copyright (C) 2004-2024 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 // 22.2.2.1.1  num_get members
  21
  22 #include <locale>
  23 #include <sstream>
  24 #include <testsuite_hooks.h>
  25
  26 struct Punct1: std::numpunct<char>
  27 {
  28   std::string do_grouping() const { return "\1"; }
  29   char do_thousands_sep() const { return '+'; }
  30 };
  31
  32 struct Punct2: std::numpunct<char>
  33 {
  34   char do_decimal_point() const { return '-'; }
  35 };
  36
  37 // http://gcc.gnu.org/ml/libstdc++/2003-12/msg00201.html
  38 void test01()
  39 {
  40   using namespace std;
  41   typedef istreambuf_iterator<char> iterator_type;
  42
  43   istringstream iss1, iss2;
  44   iss1.imbue(locale(iss1.getloc(), new Punct1));
  45   iss2.imbue(locale(iss2.getloc(), new Punct2));
  46   const num_get<char>& ng1 = use_facet<num_get<char> >(iss1.getloc());
  47   const num_get<char>& ng2 = use_facet<num_get<char> >(iss2.getloc());
  48
  49   ios_base::iostate err = ios_base::goodbit;
  50   iterator_type end;
  51   double d = 1.0;
  52
  53   iss1.str("1e+2");
  54   err = ios_base::goodbit;
  55   end = ng1.get(iss1.rdbuf(), 0, iss1, err, d);
  56   VERIFY( err == ios_base::failbit );
  57   VERIFY( *end == '+' );
  58   VERIFY( d == 0.0 );
  59
  60   iss2.str("3e-1");
  61   err = ios_base::goodbit;
  62   d = 1.0;
  63   end = ng2.get(iss2.rdbuf(), 0, iss2, err, d);
  64   VERIFY( err == ios_base::failbit );
  65   VERIFY( *end == '-' );
  66   VERIFY( d == 0.0 );
  67 }
  68
  69 int main()
  70 {
  71   test01();
  72   return 0;
  73 }