ceph/src/boost/libs/functional/include/boost/functional/value_factory.hpp

   1 /*=============================================================================
   2     Copyright (c) 2007 Tobias Schwinger
   3
   4     Use modification and distribution are 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
   9 #ifndef BOOST_FUNCTIONAL_VALUE_FACTORY_HPP_INCLUDED
  10 #   ifndef BOOST_PP_IS_ITERATING
  11
  12 #     include <boost/preprocessor/iteration/iterate.hpp>
  13 #     include <boost/preprocessor/repetition/enum_params.hpp>
  14 #     include <boost/preprocessor/repetition/enum_binary_params.hpp>
  15
  16 #     include <new>
  17 #     include <boost/pointee.hpp>
  18 #     include <boost/get_pointer.hpp>
  19 #     include <boost/non_type.hpp>
  20 #     include <boost/type_traits/remove_cv.hpp>
  21
  22 #     ifndef BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY
  23 #       define BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY 10
  24 #     elif BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY < 3
  25 #       undef  BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY
  26 #       define BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY 3
  27 #     endif
  28
  29 namespace boost
  30 {
  31     template< typename T >
  32     class value_factory;
  33
  34     //----- ---- --- -- - -  -   -
  35
  36     template< typename T >
  37     class value_factory
  38     {
  39       public:
  40         typedef T result_type;
  41
  42         value_factory()
  43         { }
  44
  45 #     define BOOST_PP_FILENAME_1 <boost/functional/value_factory.hpp>
  46 #     define BOOST_PP_ITERATION_LIMITS (0,BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY)
  47 #     include BOOST_PP_ITERATE()
  48     };
  49
  50     template< typename T > class value_factory<T&>;
  51     // forbidden, would create a dangling reference
  52 }
  53 #     define BOOST_FUNCTIONAL_VALUE_FACTORY_HPP_INCLUDED
  54 #   else // defined(BOOST_PP_IS_ITERATING)
  55
  56 #     define N BOOST_PP_ITERATION()
  57 #     if N > 0
  58     template< BOOST_PP_ENUM_PARAMS(N, typename T) >
  59 #     endif
  60     inline result_type operator()(BOOST_PP_ENUM_BINARY_PARAMS(N,T,& a)) const
  61     {
  62         return result_type(BOOST_PP_ENUM_PARAMS(N,a));
  63     }
  64 #     undef N
  65
  66 #   endif // defined(BOOST_PP_IS_ITERATING)
  67
  68 #endif // include guard
  69