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98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2014-2014
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/intrusive for documentation.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTRUSIVE_DETAIL_KEY_NODEPTR_COMP_HPP
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#define BOOST_INTRUSIVE_DETAIL_KEY_NODEPTR_COMP_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/intrusive/detail/mpl.hpp>
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#include <boost/intrusive/detail/ebo_functor_holder.hpp>
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namespace boost {
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namespace intrusive {
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namespace detail {
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template < class KeyTypeKeyCompare
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, class ValueTraits
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, class KeyOfValue = void
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>
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struct key_nodeptr_comp
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//Use public inheritance to avoid MSVC bugs with closures
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: public ebo_functor_holder<KeyTypeKeyCompare>
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{
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typedef ValueTraits value_traits;
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typedef typename value_traits::value_type value_type;
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typedef typename value_traits::node_ptr node_ptr;
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typedef typename value_traits::const_node_ptr const_node_ptr;
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typedef ebo_functor_holder<KeyTypeKeyCompare> base_t;
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typedef typename detail::if_c
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< detail::is_same<KeyOfValue, void>::value
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, detail::identity<value_type>
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, KeyOfValue
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>::type key_of_value;
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typedef typename key_of_value::type key_type;
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key_nodeptr_comp(KeyTypeKeyCompare kcomp, const ValueTraits *traits)
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: base_t(kcomp), traits_(traits)
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{}
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template<class T>
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struct is_node_ptr
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{
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static const bool value = is_same<T, const_node_ptr>::value || is_same<T, node_ptr>::value;
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};
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//key_forward
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template<class T>
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typename enable_if<is_node_ptr<T>, const key_type &>::type
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key_forward(const T &node) const
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{ return key_of_value()(*traits_->to_value_ptr(node)); }
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template<class T>
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typename disable_if<is_node_ptr<T>, const T &>::type
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const key_forward(const T &key) const
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{ return key; }
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//operator() 1 arg
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template<class KeyType>
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bool operator()(const KeyType &key1) const
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{ return base_t::get()(this->key_forward(key1)); }
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template<class KeyType>
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bool operator()(const KeyType &key1)
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{ return base_t::get()(this->key_forward(key1)); }
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//operator() 2 arg
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template<class KeyType, class KeyType2>
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bool operator()(const KeyType &key1, const KeyType2 &key2) const
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{ return base_t::get()(this->key_forward(key1), this->key_forward(key2)); }
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template<class KeyType, class KeyType2>
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bool operator()(const KeyType &key1, const KeyType2 &key2)
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{ return base_t::get()(this->key_forward(key1), this->key_forward(key2)); }
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const ValueTraits *const traits_;
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};
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} //namespace detail{
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} //namespace intrusive{
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} //namespace boost{
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#endif //BOOST_INTRUSIVE_DETAIL_KEY_NODEPTR_COMP_HPP
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