Line data    Source code

       1             : /* Copyright 2003-2015 Joaquin M Lopez Munoz.
       2             :  * Distributed under the Boost Software License, Version 1.0.
       3             :  * (See accompanying file LICENSE_1_0.txt or copy at
       4             :  * http://www.boost.org/LICENSE_1_0.txt)
       5             :  *
       6             :  * See http://www.boost.org/libs/multi_index for library home page.
       7             :  */
       8             : 
       9             : #ifndef BOOST_MULTI_INDEX_DETAIL_RAW_PTR_HPP
      10             : #define BOOST_MULTI_INDEX_DETAIL_RAW_PTR_HPP
      11             : 
      12             : #if defined(_MSC_VER)
      13             : #pragma once
      14             : #endif
      15             : 
      16             : #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
      17             : #include <boost/mpl/bool.hpp>
      18             : #include <boost/type_traits/is_same.hpp>
      19             : 
      20             : namespace boost{
      21             : 
      22             : namespace multi_index{
      23             : 
      24             : namespace detail{
      25             : 
      26             : /* gets the underlying pointer of a pointer-like value */
      27             : 
      28             : template<typename RawPointer>
      29           0 : inline RawPointer raw_ptr(RawPointer const& p,mpl::true_)
      30             : {
      31             :   return p;
      32             : }
      33             : 
      34             : template<typename RawPointer,typename Pointer>
      35             : inline RawPointer raw_ptr(Pointer const& p,mpl::false_)
      36             : {
      37             :   return p==Pointer(0)?0:&*p;
      38             : }
      39             : 
      40             : template<typename RawPointer,typename Pointer>
      41           0 : inline RawPointer raw_ptr(Pointer const& p)
      42             : {
      43           0 :   return raw_ptr<RawPointer>(p,is_same<RawPointer,Pointer>());
      44             : }
      45             : 
      46             : } /* namespace multi_index::detail */
      47             : 
      48             : } /* namespace multi_index */
      49             : 
      50             : } /* namespace boost */
      51             : 
      52             : #endif