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// Copyright David Abrahams 2003.
// 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 NULLARY_FUNCTION_ADAPTOR_DWA2003824_HPP
# define NULLARY_FUNCTION_ADAPTOR_DWA2003824_HPP
# include <boost/python/detail/prefix.hpp>
# include <boost/preprocessor/iteration/local.hpp>
# include <boost/preprocessor/facilities/intercept.hpp>
# include <boost/preprocessor/repetition/enum_params.hpp>
# include <boost/preprocessor/repetition/enum_binary_params.hpp>
namespace boost { namespace python { namespace detail {
// nullary_function_adaptor -- a class template which ignores its
// arguments and calls a nullary function instead. Used for building
// error-reporting functions, c.f. pure_virtual
template <class NullaryFunction>
struct nullary_function_adaptor
{
nullary_function_adaptor(NullaryFunction fn)
: m_fn(fn)
{}
void operator()() const { m_fn(); }
# define BOOST_PP_LOCAL_MACRO(i) \
template <BOOST_PP_ENUM_PARAMS_Z(1, i, class A)> \
void operator()( \
BOOST_PP_ENUM_BINARY_PARAMS_Z(1, i, A, const& BOOST_PP_INTERCEPT) \
) const \
{ \
m_fn(); \
}
# define BOOST_PP_LOCAL_LIMITS (1, BOOST_PYTHON_MAX_ARITY)
# include BOOST_PP_LOCAL_ITERATE()
private:
NullaryFunction m_fn;
};
}}} // namespace boost::python::detail
#endif // NULLARY_FUNCTION_ADAPTOR_DWA2003824_HPP
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