| // 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 |