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// -*- C++ -*-
// Copyright (C) 2005, 2006, 2009 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/>.
// 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 basic_tree_policy_base.hpp
* Contains a base class for tree_like policies.
*/
#ifndef PB_DS_TREE_LIKE_POLICY_BASE_HPP
#define PB_DS_TREE_LIKE_POLICY_BASE_HPP
namespace __gnu_pbds
{
namespace detail
{
#define PB_DS_CLASS_C_DEC \
basic_tree_policy_base< \
Const_Node_Iterator, \
Node_Iterator, \
Allocator>
template<typename Const_Node_Iterator,
typename Node_Iterator,
typename Allocator>
struct basic_tree_policy_base
{
protected:
typedef typename Node_Iterator::value_type it_type;
typedef typename std::iterator_traits< it_type>::value_type value_type;
typedef typename value_type::first_type key_type;
typedef
typename Allocator::template rebind<
typename remove_const<
key_type>::type>::other::const_reference
const_key_reference;
typedef
typename Allocator::template rebind<
typename remove_const<
value_type>::type>::other::const_reference
const_reference;
typedef
typename Allocator::template rebind<
typename remove_const<
value_type>::type>::other::reference
reference;
typedef
typename Allocator::template rebind<
typename remove_const<
value_type>::type>::other::const_pointer
const_pointer;
static inline const_key_reference
extract_key(const_reference r_val)
{
return (r_val.first);
}
virtual it_type
end() = 0;
it_type
end_iterator() const
{
return (const_cast<PB_DS_CLASS_C_DEC* >(this)->end());
}
virtual
~basic_tree_policy_base()
{ }
};
template<typename Const_Node_Iterator, typename Allocator>
struct basic_tree_policy_base<
Const_Node_Iterator,
Const_Node_Iterator,
Allocator>
{
protected:
typedef typename Const_Node_Iterator::value_type it_type;
typedef typename std::iterator_traits< it_type>::value_type value_type;
typedef value_type key_type;
typedef
typename Allocator::template rebind<
typename remove_const<
key_type>::type>::other::const_reference
const_key_reference;
typedef
typename Allocator::template rebind<
typename remove_const<
value_type>::type>::other::const_reference
const_reference;
typedef
typename Allocator::template rebind<
typename remove_const<
value_type>::type>::other::reference
reference;
typedef
typename Allocator::template rebind<
typename remove_const<
value_type>::type>::other::const_pointer
const_pointer;
static inline const_key_reference
extract_key(const_reference r_val)
{
return (r_val);
}
virtual it_type
end() const = 0;
it_type
end_iterator() const
{
return (end());
}
virtual
~basic_tree_policy_base()
{ }
};
#undef PB_DS_CLASS_C_DEC
} // namespace detail
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_TREE_LIKE_POLICY_BASE_HPP
|
