| /* Copyright 2003-2008 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_MODIFY_KEY_ADAPTOR_HPP | |
| #define BOOST_MULTI_INDEX_DETAIL_MODIFY_KEY_ADAPTOR_HPP | |
| #if defined(_MSC_VER)&&(_MSC_VER>=1200) | |
| #pragma once | |
| #endif | |
| namespace boost{ | |
| namespace multi_index{ | |
| namespace detail{ | |
| /* Functional adaptor to resolve modify_key as a call to modify. | |
| * Preferred over compose_f_gx and stuff cause it eliminates problems | |
| * with references to references, dealing with function pointers, etc. | |
| */ | |
| template<typename Fun,typename Value,typename KeyFromValue> | |
| struct modify_key_adaptor | |
| { | |
| modify_key_adaptor(Fun f_,KeyFromValue kfv_):f(f_),kfv(kfv_){} | |
| void operator()(Value& x) | |
| { | |
| f(kfv(x)); | |
| } | |
| private: | |
| Fun f; | |
| KeyFromValue kfv; | |
| }; | |
| } /* namespace multi_index::detail */ | |
| } /* namespace multi_index */ | |
| } /* namespace boost */ | |
| #endif |