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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 | ||
18 | namespace boost { | |
19 | ||
20 | class 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 | |
35 | template< BOOST_PP_ENUM_PARAMS(N, class A) > | |
36 | #endif | |
37 | class BOOST_PP_CAT(in_place_factory,N) | |
38 | : | |
39 | public in_place_factory_base | |
40 | { | |
41 | public: | |
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 | |
69 | template< BOOST_PP_ENUM_PARAMS(N, class A) > | |
70 | inline BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) > | |
71 | in_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 | |
77 | inline in_place_factory0 in_place() | |
78 | { | |
79 | return in_place_factory0(); | |
80 | } | |
81 | #endif | |
82 | ||
83 | #undef N | |
84 | #endif | |
85 | #endif | |
86 |