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/*=============================================================================
Copyright (c) 2001-2007 Joel de Guzman
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)
==============================================================================*/
#if !defined(BOOST_PP_IS_ITERATING)
#if !defined(PHOENIX_BIND_DETAIL_FUNCTION_PTR_HPP)
#define PHOENIX_BIND_DETAIL_FUNCTION_PTR_HPP
#include <boost/preprocessor/iterate.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/enum_binary_params.hpp>
#include <boost/preprocessor/dec.hpp>
namespace boost { namespace phoenix { namespace detail
{
template <int N>
struct function_ptr_impl
{
template <typename RT, typename FP>
struct impl;
};
template <int N, typename RT, typename FP>
struct function_ptr : function_ptr_impl<N>::template impl<RT, FP>
{
typedef typename function_ptr_impl<N>::template impl<RT, FP> base;
function_ptr(FP fp)
: base(fp) {}
};
template <>
struct function_ptr_impl<0>
{
template <typename RT, typename FP>
struct impl
{
typedef RT result_type;
impl(FP fp)
: fp(fp) {}
RT operator()() const
{
return fp();
}
FP fp;
};
};
#define BOOST_PP_ITERATION_PARAMS_1 \
(3, (1, PHOENIX_COMPOSITE_LIMIT, \
"boost/spirit/home/phoenix/bind/detail/function_ptr.hpp"))
#include BOOST_PP_ITERATE()
}}} // namespace boost::phoenix::detail
#endif
///////////////////////////////////////////////////////////////////////////////
//
// Preprocessor vertical repetition code
//
///////////////////////////////////////////////////////////////////////////////
#else // defined(BOOST_PP_IS_ITERATING)
#define N BOOST_PP_ITERATION()
template <>
struct function_ptr_impl<N>
{
template <typename RT, typename FP>
struct impl
{
template <BOOST_PP_ENUM_PARAMS(N, typename T)>
struct result
{
typedef RT type;
};
impl(FP fp)
: fp(fp) {}
template <BOOST_PP_ENUM_PARAMS(N, typename A)>
RT operator()(BOOST_PP_ENUM_BINARY_PARAMS(N, A, & _)) const
{
return fp(BOOST_PP_ENUM_PARAMS(N, _));
}
FP fp;
};
};
#undef N
#endif // defined(BOOST_PP_IS_ITERATING)
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Swift