89 lines
2.2 KiB
C++
89 lines
2.2 KiB
C++
// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
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// Copyright (C) 2007, Tobias Schwinger.
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//
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// Use, modification, and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/lib/optional for documentation.
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//
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// You are welcome to contact the author at:
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// fernando_cacciola@hotmail.com
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//
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#ifndef BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP
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#ifndef BOOST_PP_IS_ITERATING
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#include <boost/utility/detail/in_place_factory_prefix.hpp>
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namespace boost {
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class in_place_factory_base {} ;
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#define BOOST_PP_ITERATION_LIMITS (0, BOOST_MAX_INPLACE_FACTORY_ARITY)
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#define BOOST_PP_FILENAME_1 <boost/utility/in_place_factory.hpp>
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#include BOOST_PP_ITERATE()
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} // namespace boost
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#include <boost/utility/detail/in_place_factory_suffix.hpp>
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#define BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP
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#else
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#define N BOOST_PP_ITERATION()
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#if N
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template< BOOST_PP_ENUM_PARAMS(N, class A) >
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#endif
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class BOOST_PP_CAT(in_place_factory,N)
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:
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public in_place_factory_base
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{
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public:
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explicit BOOST_PP_CAT(in_place_factory,N)
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( BOOST_PP_ENUM_BINARY_PARAMS(N,A,const& a) )
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#if N > 0
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: BOOST_PP_ENUM(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _)
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#endif
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{}
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template<class T>
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void* apply(void* address
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BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(T)) const
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{
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return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) );
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}
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template<class T>
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void* apply(void* address, std::size_t n
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BOOST_APPEND_EXPLICIT_TEMPLATE_TYPE(T)) const
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{
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for(char* next = address = this->BOOST_NESTED_TEMPLATE apply<T>(address);
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!! --n;)
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this->BOOST_NESTED_TEMPLATE apply<T>(next = next+sizeof(T));
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return address;
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}
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BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _)
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};
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#if N > 0
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template< BOOST_PP_ENUM_PARAMS(N, class A) >
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inline BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) >
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in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
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{
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return BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) >
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( BOOST_PP_ENUM_PARAMS(N, a) );
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}
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#else
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inline in_place_factory0 in_place()
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{
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return in_place_factory0();
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}
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#endif
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#undef N
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#endif
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#endif
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