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  1. // Iostreams base classes -*- C++ -*-
  2.  
  3. // Copyright (C) 2014-2015 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. // Under Section 7 of GPL version 3, you are granted additional
  17. // permissions described in the GCC Runtime Library Exception, version
  18. // 3.1, as published by the Free Software Foundation.
  19.  
  20. // You should have received a copy of the GNU General Public License and
  21. // a copy of the GCC Runtime Library Exception along with this program;
  22. // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23. // <http://www.gnu.org/licenses/>.
  24.  
  25. //
  26. // ISO C++ 14882:2011: 27.5.3.1.1  Class ios_base::failure
  27. //
  28.  
  29. #define _GLIBCXX_USE_CXX11_ABI 1
  30. #include <ios>
  31.  
  32. #if ! _GLIBCXX_USE_DUAL_ABI
  33. # error This file should not be compiled for this configuration.
  34. #endif
  35.  
  36. namespace
  37. {
  38.   struct io_error_category : std::error_category
  39.   {
  40.     virtual const char*
  41.     name() const noexcept
  42.     { return "iostream"; }
  43.  
  44.     _GLIBCXX_DEFAULT_ABI_TAG
  45.     virtual std::string message(int __ec) const
  46.     {
  47.       std::string __msg;
  48.       switch (std::io_errc(__ec))
  49.       {
  50.       case std::io_errc::stream:
  51.           __msg = "iostream error";
  52.           break;
  53.       default:
  54.           __msg = "Unknown error";
  55.           break;
  56.       }
  57.       return __msg;
  58.     }
  59.   };
  60.  
  61.   const io_error_category&
  62.   __io_category_instance() noexcept
  63.   {
  64.     static const io_error_category __ec{};
  65.     return __ec;
  66.   }
  67.  
  68. } // namespace
  69.  
  70. namespace std _GLIBCXX_VISIBILITY(default)
  71. {
  72. _GLIBCXX_BEGIN_NAMESPACE_VERSION
  73.  
  74.   const error_category&
  75.   iostream_category() noexcept
  76.   { return __io_category_instance(); }
  77.  
  78.   ios_base::failure::failure(const string& __str)
  79.   : system_error(io_errc::stream, __str) { }
  80.  
  81.   ios_base::failure::failure(const string& __str, const error_code& __ec)
  82.   : system_error(__ec, __str) { }
  83.  
  84.   ios_base::failure::failure(const char* __str, const error_code& __ec)
  85.   : system_error(__ec, __str) { }
  86.  
  87.   ios_base::failure::~failure()
  88.   { }
  89.  
  90.   const char*
  91.   ios_base::failure::what() const throw()
  92.   { return runtime_error::what(); }
  93.  
  94. _GLIBCXX_END_NAMESPACE_VERSION
  95. } // namespace
  96.