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// <system_error> implementation file

// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

#include <cstring>

#include <system_error>

#include <bits/functexcept.h>

#include <limits>

namespace

{

  using std::string;

  struct generic_error_category : public std::error_category

  {

    virtual const char*

    name() const noexcept

    { return "generic"; }

    virtual string

    message(int i) const

    {

      // XXX locale issues: how does one get or set loc.

      // _GLIBCXX_HAVE_STRERROR_L, strerror_l(i, cloc)

      return string(strerror(i));

    }

  };

  struct system_error_category : public std::error_category

  {

    virtual const char*

    name() const noexcept

    { return "system"; }

    virtual string

    message(int i) const

    {

      // XXX locale issues: how does one get or set loc.

      // _GLIBCXX_HAVE_STRERROR_L, strerror_l(i, cloc)

      return string(strerror(i));

    }

  };

  const generic_error_category generic_category_instance;

  const system_error_category system_category_instance;

}

namespace std _GLIBCXX_VISIBILITY(default)

{

_GLIBCXX_BEGIN_NAMESPACE_VERSION

  error_category::error_category() noexcept = default;

  error_category::~error_category() noexcept = default;

  const error_category&

  system_category() noexcept { return system_category_instance; }

  const error_category&

  generic_category() noexcept { return generic_category_instance; }

  system_error::~system_error() noexcept = default;

  error_condition

  error_category::default_error_condition(int __i) const noexcept

  { return error_condition(__i, *this); }

  bool

  error_category::equivalent(int __i,

                             const error_condition& __cond) const noexcept

  { return default_error_condition(__i) == __cond; }

  bool

  error_category::equivalent(const error_code& __code, int __i) const noexcept

  { return *this == __code.category() && __code.value() == __i; }

  error_condition

  error_code::default_error_condition() const noexcept

  { return category().default_error_condition(value()); }

_GLIBCXX_END_NAMESPACE_VERSION

} // namespace