1 // Copyright (C) 2003, Fernando Luis Cacciola Carballal.
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)
7 // See http://www.boost.org/lib/optional for documentation.
9 // You are welcome to contact the author at:
10 // fernando_cacciola@hotmail.com
12 #ifndef BOOST_UTILITY_INPLACE_FACTORY_25AGO2003_HPP
13 #define BOOST_UTILITY_INPLACE_FACTORY_25AGO2003_HPP
15 #include <boost/utility/detail/in_place_factory_prefix.hpp>
17 #include <boost/type.hpp>
21 class in_place_factory_base {} ;
23 #define BOOST_DEFINE_INPLACE_FACTORY_CLASS(z,n,_) \
24 template< BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(n),class A) > \
25 class BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) : public in_place_factory_base \
29 BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) ( BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_INC(n),A,const& a) ) \
31 BOOST_PP_ENUM( BOOST_PP_INC(n), BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _ ) \
35 void apply ( void* address BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(T) ) const \
37 new ( address ) T ( BOOST_PP_ENUM_PARAMS( BOOST_PP_INC(n), m_a ) ) ; \
40 BOOST_PP_REPEAT( BOOST_PP_INC(n), BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _) \
43 template< BOOST_PP_ENUM_PARAMS(BOOST_PP_INC(n),class A) > \
44 BOOST_PP_CAT(in_place_factory, BOOST_PP_INC(n) ) < BOOST_PP_ENUM_PARAMS( BOOST_PP_INC(n), A ) > \
45 in_place ( BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_INC(n),A, const& a) ) \
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 ) ) ; \
51 BOOST_PP_REPEAT( BOOST_MAX_INPLACE_FACTORY_ARITY, BOOST_DEFINE_INPLACE_FACTORY_CLASS, BOOST_PP_EMPTY() )
55 #include <boost/utility/detail/in_place_factory_suffix.hpp>