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 87