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// -*- C++ -*-
// Copyright (C) 2005, 2006, 2007 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 2, 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.
// You should have received a copy of the GNU General Public License
// along with this library; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
// As a special exception, you may use this file as part of a free
// software library without restriction. Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to
// produce an executable, this file does not by itself cause the
// resulting executable to be covered by the GNU General Public
// License. This exception does not however invalidate any other
// reasons why the executable file might be covered by the GNU General
// Public License.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file native_hash_set.hpp
* Contains an adapter to Dinkumware/SGI hash tables
*/
#ifndef PB_DS_NATIVE_HASH_SET_HPP
#define PB_DS_NATIVE_HASH_SET_HPP
#include <string>
#include <ext/pb_ds/detail/type_utils.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
#include <native_type/assoc/native_hash_tag.hpp>
#include <io/xml.hpp>
// Default to using tr1.
#define PB_DS_USE_TR1 1
#ifdef PB_DS_USE_TR1
#include <tr1/unordered_set>
#else
#include <ext/hash_set>
#endif
namespace pb_ds
{
namespace test
{
#ifdef PB_DS_USE_TR1
#define PB_DS_BASE_C_DEC \
std::tr1::__unordered_set<Key, Hash_Fn, Eq_Fn, \
typename Allocator::template rebind<Key>::other, Cache_Hash>
#else
#define PB_DS_BASE_C_DEC \
__gnu_cxx::hash_set<Key, Hash_Fn, Eq_Fn, \
typename Allocator::template rebind<Key>::other>
#endif
template<typename Key,
size_t Init_Size = 8,
typename Hash_Fn = typename pb_ds::detail::default_hash_fn<Key>::type,
typename Eq_Fn = std::equal_to<Key>,
typename Less_Fn = std::less<Key>,
typename Allocator = std::allocator<char>
#ifdef PB_DS_USE_TR1
, bool Cache_Hash = false
#endif
>
class native_hash_set : public PB_DS_BASE_C_DEC
{
private:
typedef PB_DS_BASE_C_DEC base_type;
public:
typedef native_hash_tag container_category;
native_hash_set() : base_type(Init_Size) { }
template<typename It>
native_hash_set(It f, It l) : base_type(f, l) { }
template<typename Pred>
inline size_t
erase_if(Pred pred)
{
size_t ersd = 0;
bool done = false;
while (!done)
{
typename base_type::iterator b_it = base_type::begin();
typename base_type::iterator e_it = base_type::end();
done = true;
while (b_it != e_it)
{
if (pred(*b_it))
{
++ersd;
done = false;
base_type::erase(*b_it);
b_it = e_it;
}
else
++b_it;
}
}
return ersd;
}
static std::string
name()
{
#ifdef PB_DS_USE_TR1
return std::string("n_hash_set_")
+ (Cache_Hash ? std::string("cah") : std::string("ncah"));
#else
return std::string("n_hash_set_ncah");
#endif
}
static std::string
desc()
{
#ifdef PB_DS_USE_TR1
const std::string cache_hash_desc =
make_xml_tag("cache_hash_code", "value",
Cache_Hash ? std::string("true") : std::string("false"));
return make_xml_tag("type", "value", "std_tr1_unordered_set",
cache_hash_desc);
#else
return make_xml_tag("type", "value", "__gnucxx_hash_set");
#endif
}
};
#undef PB_DS_BASE_C_DEC
} // namespace test
} // namespace pb_ds
#endif
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