57 lines
1.3 KiB
Plaintext
57 lines
1.3 KiB
Plaintext
/* Copyright 2003-2015 Joaquin M Lopez Munoz.
|
|
* Distributed under the Boost Software License, Version 1.0.
|
|
* (See accompanying file LICENSE_1_0.txt or copy at
|
|
* http://www.boost.org/LICENSE_1_0.txt)
|
|
*
|
|
* See http://www.boost.org/libs/multi_index for library home page.
|
|
*/
|
|
|
|
#ifndef BOOST_MULTI_INDEX_DETAIL_VALUE_COMPARE_HPP
|
|
#define BOOST_MULTI_INDEX_DETAIL_VALUE_COMPARE_HPP
|
|
|
|
#if defined(_MSC_VER)
|
|
#pragma once
|
|
#endif
|
|
|
|
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
|
|
#include <boost/call_traits.hpp>
|
|
|
|
namespace boost{
|
|
|
|
namespace multi_index{
|
|
|
|
namespace detail{
|
|
|
|
template<typename Value,typename KeyFromValue,typename Compare>
|
|
struct value_comparison
|
|
{
|
|
typedef Value first_argument_type;
|
|
typedef Value second_argument_type;
|
|
typedef bool result_type;
|
|
|
|
value_comparison(
|
|
const KeyFromValue& key_=KeyFromValue(),const Compare& comp_=Compare()):
|
|
key(key_),comp(comp_)
|
|
{
|
|
}
|
|
|
|
bool operator()(
|
|
typename call_traits<Value>::param_type x,
|
|
typename call_traits<Value>::param_type y)const
|
|
{
|
|
return comp(key(x),key(y));
|
|
}
|
|
|
|
private:
|
|
KeyFromValue key;
|
|
Compare comp;
|
|
};
|
|
|
|
} /* namespace multi_index::detail */
|
|
|
|
} /* namespace multi_index */
|
|
|
|
} /* namespace boost */
|
|
|
|
#endif
|