1//
2// Boost.Pointer Container
3//
4// Copyright Thorsten Ottosen 2003-2005. Use, modification and
5// distribution is subject to the Boost Software License, Version
6// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8//
9// For more information, see http://www.boost.org/libs/ptr_container/
10//
11
12#ifndef BOOST_PTR_CONTAINER_CLONE_ALLOCATOR_HPP
13#define BOOST_PTR_CONTAINER_CLONE_ALLOCATOR_HPP
14
15#include <boost/assert.hpp>
16#include <boost/checked_delete.hpp>
17#include <typeinfo>
18
19namespace boost
20{
21 /////////////////////////////////////////////////////////////////////////
22 // Clonable concept
23 /////////////////////////////////////////////////////////////////////////
24
25 template< class T >
26 inline T* new_clone( const T& r )
27 {
28 //
29 // @remark: if you get a compile-error here,
30 // it is most likely because you did not
31 // define new_clone( const T& ) in the namespace
32 // of T.
33 //
34 T* res = new T( r );
35 BOOST_ASSERT( typeid(r) == typeid(*res) &&
36 "Default new_clone() sliced object!" );
37 return res;
38 }
39
40
41
42 template< class T >
43 inline void delete_clone( const T* r )
44 {
45 checked_delete( r );
46 }
47
48 /////////////////////////////////////////////////////////////////////////
49 // CloneAllocator concept
50 /////////////////////////////////////////////////////////////////////////
51
52 struct heap_clone_allocator
53 {
54 template< class U >
55 static U* allocate_clone( const U& r )
56 {
57 return new_clone( r );
58 }
59
60 template< class U >
61 static void deallocate_clone( const U* r )
62 {
63 delete_clone( r );
64 }
65
66 };
67
68
69
70 struct view_clone_allocator
71 {
72 template< class U >
73 static U* allocate_clone( const U& r )
74 {
75 return const_cast<U*>(&r);
76 }
77
78 template< class U >
79 static void deallocate_clone( const U* /*r*/ )
80 {
81 // do nothing
82 }
83 };
84
85} // namespace 'boost'
86
87#endif
88
89

source code of boost/libs/ptr_container/include/boost/ptr_container/clone_allocator.hpp