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 // In order to avoid circular dependencies with Boost.TR1
   9 // we make sure that our include of <memory> doesn't try to
  10 // pull in the TR1 headers: that's why we use this header
  11 // rather than including <memory> directly:
  12 # include <boost/config/no_tr1/memory.hpp>  // std::auto_ptr
  13
  14 namespace boost {
  15
  16 // get_pointer(p) extracts a ->* capable pointer from p
  17
  18 template<class T> T * get_pointer(T * p)
  19 {
  20     return p;
  21 }
  22
  23 // get_pointer(shared_ptr<T> const & p) has been moved to shared_ptr.hpp
  24
  25 template<class T> T * get_pointer(std::auto_ptr<T> const& p)
  26 {
  27     return p.get();
  28 }
  29
  30
  31 } // namespace boost
  32
  33 #endif // GET_POINTER_DWA20021219_HPP