williamr@2: //
williamr@2: // Boost.Pointer Container
williamr@2: //
williamr@2: //  Copyright Thorsten Ottosen 2003-2005. Use, modification and
williamr@2: //  distribution is subject to the Boost Software License, Version
williamr@2: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
williamr@2: //  http://www.boost.org/LICENSE_1_0.txt)
williamr@2: //
williamr@2: // For more information, see http://www.boost.org/libs/ptr_container/
williamr@2: //
williamr@2: 
williamr@2: #ifndef BOOST_PTR_CONTAINER_CLONE_ALLOCATOR_HPP
williamr@2: #define BOOST_PTR_CONTAINER_CLONE_ALLOCATOR_HPP
williamr@2: 
williamr@2: #include <boost/assert.hpp>
williamr@2: #include <boost/checked_delete.hpp>
williamr@2: #include <typeinfo>
williamr@2: 
williamr@2: namespace boost
williamr@2: {
williamr@2:     /////////////////////////////////////////////////////////////////////////
williamr@2:     // Clonable concept 
williamr@2:     /////////////////////////////////////////////////////////////////////////
williamr@2:     
williamr@2:     template< class T >
williamr@2:     inline T* new_clone( const T& r )
williamr@2:     {
williamr@2:         T* res = new T( r );
williamr@2:         BOOST_ASSERT( typeid(r) == typeid(*res) &&
williamr@2:                       "Default new_clone() sliced object!" );
williamr@2:         return res;
williamr@2:     }
williamr@2: 
williamr@2:     template< class T >
williamr@2:     inline void delete_clone( const T* r )
williamr@2:     {
williamr@2:         checked_delete( r );
williamr@2:     }
williamr@2: 
williamr@2:     /////////////////////////////////////////////////////////////////////////
williamr@2:     // CloneAllocator concept
williamr@2:     /////////////////////////////////////////////////////////////////////////
williamr@2:     
williamr@2:     struct heap_clone_allocator
williamr@2:     {
williamr@2:         template< class U >
williamr@2:         static U* allocate_clone( const U& r )
williamr@2:         {
williamr@2:             return new_clone( r );
williamr@2:         }
williamr@2: 
williamr@2:         template< class U >
williamr@2:         static void deallocate_clone( const U* r )
williamr@2:         {
williamr@2:             delete_clone( r );
williamr@2:         }
williamr@2: 
williamr@2:     };
williamr@2: 
williamr@2: 
williamr@2:     
williamr@2:     struct view_clone_allocator
williamr@2:     {
williamr@2:         template< class U >
williamr@2:         static U* allocate_clone( const U& r )
williamr@2:         {
williamr@2:             return const_cast<U*>( &r );
williamr@2:         }
williamr@2: 
williamr@2:         template< class U >
williamr@2:         static void deallocate_clone( const U* r )
williamr@2:         {
williamr@2:             // do nothing
williamr@2:         }
williamr@2:     };
williamr@2: 
williamr@2: } // namespace 'boost'
williamr@2: 
williamr@2: #endif
williamr@2: