ceph/src/boost/libs/core/include/boost/get_pointer.hpp

   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
  16 namespace boost {
  17
  18 // get_pointer(p) extracts a ->* capable pointer from p
  19
  20 template<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
  48 template<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
  62 template<class T> T * get_pointer( std::unique_ptr<T> const& p )
  63 {
  64     return p.get();
  65 }
  66
  67 template<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