/*============================================================================= Copyright (c) 2007 Tobias Schwinger Use modification and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt). ==============================================================================*/ #ifndef BOOST_FUNCTIONAL_VALUE_FACTORY_HPP_INCLUDED # ifndef BOOST_PP_IS_ITERATING # include <boost/preprocessor/iteration/iterate.hpp> # include <boost/preprocessor/repetition/enum_params.hpp> # include <boost/preprocessor/repetition/enum_binary_params.hpp> # include <new> # include <boost/pointee.hpp> # include <boost/none_t.hpp> # include <boost/get_pointer.hpp> # include <boost/non_type.hpp> # include <boost/type_traits/remove_cv.hpp> # ifndef BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY # define BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY 10 # elif BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY < 3 # undef BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY # define BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY 3 # endif namespace boost { template< typename T > class value_factory; //----- ---- --- -- - - - - template< typename T > class value_factory { public: typedef T result_type; value_factory() { } # define BOOST_PP_FILENAME_1 <boost/functional/value_factory.hpp> # define BOOST_PP_ITERATION_LIMITS (0,BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY) # include BOOST_PP_ITERATE() }; template< typename T > class value_factory<T&>; // forbidden, would create a dangling reference } # define BOOST_FUNCTIONAL_VALUE_FACTORY_HPP_INCLUDED # else // defined(BOOST_PP_IS_ITERATING) # define N BOOST_PP_ITERATION() # if N > 0 template< BOOST_PP_ENUM_PARAMS(N, typename T) > # endif inline result_type operator()(BOOST_PP_ENUM_BINARY_PARAMS(N,T,& a)) const { return result_type(BOOST_PP_ENUM_PARAMS(N,a)); } # undef N # endif // defined(BOOST_PP_IS_ITERATING) #endif // include guard