1// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
2// Copyright (C) 2007, Tobias Schwinger.
3//
4// Use, modification, and distribution is subject to the Boost Software
5// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7//
8// See http://www.boost.org/libs/optional for documentation.
9//
10// You are welcome to contact the author at:
11// fernando_cacciola@hotmail.com
12//
13#ifndef BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP
14#ifndef BOOST_PP_IS_ITERATING
15
16#include <boost/utility/detail/in_place_factory_prefix.hpp>
17
18namespace boost {
19
20class in_place_factory_base {} ;
21
22#define BOOST_PP_ITERATION_LIMITS (0, BOOST_MAX_INPLACE_FACTORY_ARITY)
23#define BOOST_PP_FILENAME_1 <boost/utility/in_place_factory.hpp>
24#include BOOST_PP_ITERATE()
25
26} // namespace boost
27
28#include <boost/utility/detail/in_place_factory_suffix.hpp>
29
30#define BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP
31#else
32#define N BOOST_PP_ITERATION()
33
34#if N
35template< BOOST_PP_ENUM_PARAMS(N, class A) >
36#endif
37class BOOST_PP_CAT(in_place_factory,N)
38 :
39 public in_place_factory_base
40{
41public:
42
43 explicit BOOST_PP_CAT(in_place_factory,N)
44 ( BOOST_PP_ENUM_BINARY_PARAMS(N,A,const& a) )
45#if N > 0
46 : BOOST_PP_ENUM(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _)
47#endif
48 {}
49
50 template<class T>
51 void* apply(void* address) const
52 {
53 return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) );
54 }
55
56 template<class T>
57 void* apply(void* address, std::size_t n) const
58 {
59 for(char* next = address = this->BOOST_NESTED_TEMPLATE apply<T>(address);
60 !! --n;)
61 this->BOOST_NESTED_TEMPLATE apply<T>(next = next+sizeof(T));
62 return address;
63 }
64
65 BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _)
66};
67
68#if N > 0
69template< BOOST_PP_ENUM_PARAMS(N, class A) >
70inline BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) >
71in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
72{
73 return BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) >
74 ( BOOST_PP_ENUM_PARAMS(N, a) );
75}
76#else
77inline in_place_factory0 in_place()
78{
79 return in_place_factory0();
80}
81#endif
82
83#undef N
84#endif
85#endif
86
87

source code of boost/boost/utility/in_place_factory.hpp