| /* 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 |