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[thirdparty/gcc.git] / libstdc++-v3 / src / c++11 / cxx11-hash_tr1.cc

// std::tr1::hash definitions with new string -*- C++ -*-

// Copyright (C) 2014-2019 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/>.

#define _GLIBCXX_USE_CXX11_ABI 1
#include <string>

#if ! _GLIBCXX_USE_DUAL_ABI
# error This file should not be compiled for this configuration.
#endif

#include <tr1/functional>
namespace std _GLIBCXX_VISIBILITY(default)
{
  namespace tr1
  {
  template<>
    size_t
    hash<string>::operator()(string __s) const
    { return _Fnv_hash::hash(__s.data(), __s.length()); }

  template<>
    size_t
    hash<const string&>::operator()(const string& __s) const
    { return _Fnv_hash::hash(__s.data(), __s.length()); }

#ifdef _GLIBCXX_USE_WCHAR_T
  template<>
    size_t
    hash<wstring>::operator()(wstring __s) const
    { return _Fnv_hash::hash(__s.data(), __s.length() * sizeof(wchar_t)); }

  template<>
    size_t
    hash<const wstring&>::operator()(const wstring& __s) const
    { return _Fnv_hash::hash(__s.data(), __s.length() * sizeof(wchar_t)); }
#endif
  }
}