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