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// (C) Copyright Tobias Schwinger
//
// Use modification and distribution are subject to the boost Software License,
// Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt).
//------------------------------------------------------------------------------
#ifndef BOOST_FT_RESULT_TYPE_HPP_INCLUDED
#define BOOST_FT_RESULT_TYPE_HPP_INCLUDED
#include <boost/blank.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/aux_/lambda_support.hpp>
#include <boost/mpl/at.hpp>
#include <boost/function_types/is_callable_builtin.hpp>
#include <boost/function_types/components.hpp>
namespace boost
{
namespace function_types
{
template< typename T > struct result_type;
namespace detail
{
template<typename T> struct result_type_impl
: mpl::at_c
< typename function_types::components<T>::types, 0 >
{ };
}
template<typename T> struct result_type
: mpl::if_
< function_types::is_callable_builtin<T>
, detail::result_type_impl<T>, boost::blank
>::type
{
BOOST_MPL_AUX_LAMBDA_SUPPORT(1,result_type,(T))
};
}
}
#endif
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