boost/phoenix/function/function.hpp
/*==============================================================================
Copyright (c) 2001-2010 Joel de Guzman
Copyright (c) 2010 Eric Niebler
Distributed under 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_PHOENIX_FUNCTION_FUNCTION_HPP
#define BOOST_PHOENIX_FUNCTION_FUNCTION_HPP
#include <boost/config.hpp>
//#include <boost/phoenix/function/function_handling.hpp>
#include <boost/phoenix/core/detail/function_eval.hpp>
#include <boost/preprocessor/facilities/expand.hpp>
#include <boost/preprocessor/logical/or.hpp>
#include <boost/utility/result_of.hpp>
namespace boost { namespace phoenix
{
/////////////////////////////////////////////////////////////////////////////
// Functions
/////////////////////////////////////////////////////////////////////////////
// functor which returns our lazy function call extension
template<typename F>
struct function
{
BOOST_CONSTEXPR function()
: f()
{}
BOOST_CONSTEXPR function(F f)
: f(f)
{}
template <typename Sig>
struct result;
typename detail::expression::function_eval<F>::type const
operator()() const
{
return detail::expression::function_eval<F>::make(f);
}
// Bring in the rest
#include <boost/phoenix/function/detail/function_operator.hpp>
F f;
};
}
template<typename F>
struct result_of<phoenix::function<F>()>
: phoenix::detail::expression::function_eval<F>
{};
}
#endif