source: NonGTP/Boost/boost/utility/in_place_factory.hpp @ 857

Revision 857, 2.0 KB checked in by igarcia, 19 years ago (diff)
Line 
1// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
2//
3// Use, modification, and distribution is subject to the Boost Software
4// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5// http://www.boost.org/LICENSE_1_0.txt)
6//
7// See http://www.boost.org/lib/optional for documentation.
8//
9// You are welcome to contact the author at:
10//  fernando_cacciola@hotmail.com
11//
12#ifndef BOOST_UTILITY_INPLACE_FACTORY_25AGO2003_HPP
13#define BOOST_UTILITY_INPLACE_FACTORY_25AGO2003_HPP
14
15#include <boost/utility/detail/in_place_factory_prefix.hpp>
16
17#include <boost/type.hpp>
18
19namespace boost {
20
21class in_place_factory_base {} ;
22
23#define BOOST_DEFINE_INPLACE_FACTORY_CLASS(z,n,_) \
24template< BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(n),class A) > \
25class BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) : public in_place_factory_base \
26{ \
27public: \
28\
29  BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) ( BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_INC(n),A,const& a) ) \
30    : \
31    BOOST_PP_ENUM( BOOST_PP_INC(n), BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _ ) \
32  {} \
33\
34  template<class T> \
35  void apply ( void* address BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(T) ) const \
36  { \
37    new ( address ) T ( BOOST_PP_ENUM_PARAMS( BOOST_PP_INC(n), m_a ) ) ; \
38  } \
39\
40  BOOST_PP_REPEAT( BOOST_PP_INC(n), BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _) \
41} ; \
42\
43template< BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(n),class A) > \
44BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) < BOOST_PP_ENUM_PARAMS( BOOST_PP_INC(n), A ) > \
45in_place ( BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_INC(n),A, const& a) ) \
46{ \
47  return BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) < BOOST_PP_ENUM_PARAMS( BOOST_PP_INC(n), A ) > \
48           ( BOOST_PP_ENUM_PARAMS( BOOST_PP_INC(n), a ) ) ; \
49} ; \
50
51BOOST_PP_REPEAT( BOOST_MAX_INPLACE_FACTORY_ARITY, BOOST_DEFINE_INPLACE_FACTORY_CLASS, BOOST_PP_EMPTY() )
52
53} // namespace boost
54
55#include <boost/utility/detail/in_place_factory_suffix.hpp>
56
57#endif
58
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