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- /*=============================================================================
- 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
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