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
20namespace boost{
21
22namespace multi_index{
23
24namespace detail{
25
26/* gets the underlying pointer of a pointer-like value */
27
28template<typename RawPointer>
29inline RawPointer raw_ptr(RawPointer const& p,mpl::true_)
30{
31 return p;
32}
33
34template<typename RawPointer,typename Pointer>
35inline RawPointer raw_ptr(Pointer const& p,mpl::false_)
36{
37 return p==Pointer(0)?0:&*p;
38}
39
40template<typename RawPointer,typename Pointer>
41inline RawPointer raw_ptr(Pointer const& p)
42{
43 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
53