1// Copyright Peter Dimov and David Abrahams 2002.
2// Distributed under the Boost Software License, Version 1.0. (See
3// accompanying file LICENSE_1_0.txt or copy at
4// http://www.boost.org/LICENSE_1_0.txt)
5#ifndef GET_POINTER_DWA20021219_HPP
6#define GET_POINTER_DWA20021219_HPP
7
8#include <boost/config.hpp>
9
10// In order to avoid circular dependencies with Boost.TR1
11// we make sure that our include of <memory> doesn't try to
12// pull in the TR1 headers: that's why we use this header
13// rather than including <memory> directly:
14#include <boost/config/no_tr1/memory.hpp> // std::auto_ptr
15
16namespace boost {
17
18// get_pointer(p) extracts a ->* capable pointer from p
19
20template<class T> T * get_pointer(T * p)
21{
22 return p;
23}
24
25// get_pointer(shared_ptr<T> const & p) has been moved to shared_ptr.hpp
26
27#if !defined( BOOST_NO_AUTO_PTR )
28
29#if defined( __GNUC__ ) && (defined( __GXX_EXPERIMENTAL_CXX0X__ ) || (__cplusplus >= 201103L))
30#if defined( BOOST_GCC )
31#if BOOST_GCC >= 40600
32#define BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS
33#endif // BOOST_GCC >= 40600
34#elif defined( __clang__ ) && defined( __has_warning )
35#if __has_warning("-Wdeprecated-declarations")
36#define BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS
37#endif // __has_warning("-Wdeprecated-declarations")
38#endif
39#endif // defined( __GNUC__ ) && (defined( __GXX_EXPERIMENTAL_CXX0X__ ) || (__cplusplus >= 201103L))
40
41#if defined( BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS )
42// Disable libstdc++ warnings about std::auto_ptr being deprecated in C++11 mode
43#pragma GCC diagnostic push
44#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
45#define BOOST_CORE_DETAIL_DISABLED_DEPRECATED_WARNINGS
46#endif
47
48template<class T> T * get_pointer(std::auto_ptr<T> const& p)
49{
50 return p.get();
51}
52
53#if defined( BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS )
54#pragma GCC diagnostic pop
55#undef BOOST_CORE_DETAIL_DISABLE_LIBSTDCXX_DEPRECATED_WARNINGS
56#endif
57
58#endif // !defined( BOOST_NO_AUTO_PTR )
59
60#if !defined( BOOST_NO_CXX11_SMART_PTR )
61
62template<class T> T * get_pointer( std::unique_ptr<T> const& p )
63{
64 return p.get();
65}
66
67template<class T> T * get_pointer( std::shared_ptr<T> const& p )
68{
69 return p.get();
70}
71
72#endif
73
74} // namespace boost
75
76#endif // GET_POINTER_DWA20021219_HPP
77

source code of boost/boost/get_pointer.hpp