75 lines
1.3 KiB
C++
75 lines
1.3 KiB
C++
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#include <boost/parameter.hpp>
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BOOST_PARAMETER_NAME(name)
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BOOST_PARAMETER_NAME(func)
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BOOST_PARAMETER_NAME(docstring)
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BOOST_PARAMETER_NAME(keywords)
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BOOST_PARAMETER_NAME(policies)
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struct default_call_policies
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{};
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struct no_keywords
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{};
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struct keywords
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{};
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template <class T>
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struct is_keyword_expression
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: boost::mpl::false_
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{};
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template <>
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struct is_keyword_expression<keywords>
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: boost::mpl::true_
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{};
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default_call_policies some_policies;
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void f()
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{}
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namespace mpl = boost::mpl;
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BOOST_PARAMETER_FUNCTION(
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(void), def, tag,
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(required (name,(char const*)) (func,*) ) // nondeduced
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(deduced
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(optional
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(docstring, (char const*), "")
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(keywords
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, *(is_keyword_expression<mpl::_>) // see 5
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, no_keywords())
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(policies
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, *(mpl::not_<
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mpl::or_<
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boost::is_convertible<mpl::_, char const*>
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, is_keyword_expression<mpl::_> // see 5
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>
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>)
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, default_call_policies()
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)
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)
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)
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)
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{
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}
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int main()
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{
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def("f", &f, some_policies, "Documentation for f");
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def("f", &f, "Documentation for f", some_policies);
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def(
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"f", &f
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, _policies = some_policies, "Documentation for f");
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}
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