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// (C) Copyright Tobias Schwinger
// Use modification and distribution are subject to the boost Software License,
// Version 1.0. (See



#include <boost/blank.hpp>
#include <boost/mpl/if.hpp>

#include <boost/mpl/aux_/lambda_support.hpp>

#include <boost/mpl/pop_front.hpp>

#include <boost/function_types/is_callable_builtin.hpp>
#include <boost/function_types/components.hpp>

namespace boost 
  namespace function_types 
    using mpl::placeholders::_;
    template< typename T, typename ClassTypeTransform = add_reference<_> >
    struct parameter_types;

    namespace detail
      template<typename T, typename ClassTypeTransform> 
      struct parameter_types_impl
        : mpl::pop_front
          < typename function_types::components<T,ClassTypeTransform>::types 
      { };

    template<typename T, typename ClassTypeTransform> struct parameter_types
      : mpl::if_
        < function_types::is_callable_builtin<T>
        , detail::parameter_types_impl<T,ClassTypeTransform>, boost::blank