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46 lines
1.7 KiB
46 lines
1.7 KiB
// Copyright David Abrahams 2003. |
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// Distributed under the Boost Software License, Version 1.0. (See |
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// accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef NULLARY_FUNCTION_ADAPTOR_DWA2003824_HPP |
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# define NULLARY_FUNCTION_ADAPTOR_DWA2003824_HPP |
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# include <boost/python/detail/prefix.hpp> |
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# include <boost/preprocessor/iteration/local.hpp> |
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# include <boost/preprocessor/facilities/intercept.hpp> |
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# include <boost/preprocessor/repetition/enum_params.hpp> |
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# include <boost/preprocessor/repetition/enum_binary_params.hpp> |
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namespace boost { namespace python { namespace detail { |
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// nullary_function_adaptor -- a class template which ignores its |
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// arguments and calls a nullary function instead. Used for building |
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// error-reporting functions, c.f. pure_virtual |
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template <class NullaryFunction> |
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struct nullary_function_adaptor |
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{ |
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nullary_function_adaptor(NullaryFunction fn) |
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: m_fn(fn) |
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{} |
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void operator()() const { m_fn(); } |
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# define BOOST_PP_LOCAL_MACRO(i) \ |
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template <BOOST_PP_ENUM_PARAMS_Z(1, i, class A)> \ |
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void operator()( \ |
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BOOST_PP_ENUM_BINARY_PARAMS_Z(1, i, A, const& BOOST_PP_INTERCEPT) \ |
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) const \ |
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{ \ |
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m_fn(); \ |
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} |
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# define BOOST_PP_LOCAL_LIMITS (1, BOOST_PYTHON_MAX_ARITY) |
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# include BOOST_PP_LOCAL_ITERATE() |
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private: |
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NullaryFunction m_fn; |
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}; |
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}}} // namespace boost::python::detail |
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#endif // NULLARY_FUNCTION_ADAPTOR_DWA2003824_HPP
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