boost/pointer_to_other.hpp

   1 #ifndef BOOST_POINTER_TO_OTHER_HPP_INCLUDED
   2 #define BOOST_POINTER_TO_OTHER_HPP_INCLUDED
   3
   4 //
   5 //  pointer_to_other.hpp
   6 //
   7 //  (C) Copyright Ion Gaztanaga 2005.
   8 //  Copyright (c) 2005 Peter Dimov.
   9 //
  10 //  Distributed under the Boost Software License, Version 1.0.
  11 //
  12 //  (See accompanying file LICENSE_1_0.txt or copy at
  13 //  http://www.boost.org/LICENSE_1_0.txt)
  14 //
  15 //  See http://www.boost.org/libs/smart_ptr/pointer_to_other.html
  16 //
  17
  18 namespace boost
  19 {
  20
  21 // Defines the same pointer type (raw or smart) to another pointee type
  22
  23 template<class T, class U>
  24 struct pointer_to_other;
  25
  26 template<class T, class U,
  27          template<class> class Sp>
  28 struct pointer_to_other< Sp<T>, U >
  29 {
  30    typedef Sp<U> type;
  31 };
  32
  33 template<class T, class T2, class U,
  34          template<class, class> class Sp>
  35 struct pointer_to_other< Sp<T, T2>, U >
  36 {
  37    typedef Sp<U, T2> type;
  38 };
  39
  40 template<class T, class T2, class T3, class U,
  41          template<class, class, class> class Sp>
  42 struct pointer_to_other< Sp<T, T2, T3>, U >
  43 {
  44    typedef Sp<U, T2, T3> type;
  45 };
  46
  47 template<class T, class U>
  48 struct pointer_to_other< T*, U >
  49 {
  50    typedef U* type;
  51 };
  52
  53 } // namespace boost
  54
  55 #endif // #ifndef BOOST_POINTER_TO_OTHER_HPP_INCLUDED