/*============================================================================= | |
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 | |