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_TYPED_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 typed_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/typed_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_TYPED_INPLACE_FACTORY_04APR2007_HPP 31 #else 32 #define N BOOST_PP_ITERATION() 33 34 template< class T BOOST_PP_ENUM_TRAILING_PARAMS(N,class A) > 35 class BOOST_PP_CAT(typed_in_place_factory,N) 36 : 37 public typed_in_place_factory_base 38 { 39 public: 40 41 typedef T value_type; 42 43 explicit BOOST_PP_CAT(typed_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 void* apply (void* address) const 51 { 52 return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) ); 53 } 54 55 void* apply (void* address, std::size_t n) const 56 { 57 for(void* next = address = this->apply(address); !! --n;) 58 this->apply(next = static_cast<char *>(next) + sizeof(T)); 59 return address; 60 } 61 62 BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _) 63 }; 64 65 template< class T BOOST_PP_ENUM_TRAILING_PARAMS(N, class A) > 66 inline BOOST_PP_CAT(typed_in_place_factory,N)< 67 T BOOST_PP_ENUM_TRAILING_PARAMS(N, A) > 68 in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) ) 69 { 70 return BOOST_PP_CAT(typed_in_place_factory,N)< 71 T BOOST_PP_ENUM_TRAILING_PARAMS(N, A) >( BOOST_PP_ENUM_PARAMS(N, a) ); 72 } 73 74 #undef N 75 #endif 76 #endif 77 78