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3rdparty/boost_1_81_0/boost/python/detail/signature.hpp 3.06 KB
0b6a182c   Hu Chunming   添加无鉴权注册和注销
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  #if !defined(BOOST_PP_IS_ITERATING)
  
  // Copyright David Abrahams 2002.
  // 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 SIGNATURE_DWA20021121_HPP
  #  define SIGNATURE_DWA20021121_HPP
  
  #  include <boost/python/type_id.hpp>
  
  #  include <boost/python/detail/preprocessor.hpp>
  #  include <boost/python/detail/indirect_traits.hpp>
  #  include <boost/python/converter/pytype_function.hpp>
  
  #  include <boost/preprocessor/iterate.hpp>
  #  include <boost/preprocessor/iteration/local.hpp>
  
  #  include <boost/mpl/at.hpp>
  #  include <boost/mpl/size.hpp>
  
  namespace boost { namespace python { namespace detail { 
  
  struct signature_element
  {
      char const* basename;
      converter::pytype_function pytype_f;
      bool lvalue;
  };
  
  struct py_func_sig_info
  {
      signature_element const *signature;
      signature_element const *ret;
  };
  
  template <unsigned> struct signature_arity;
  
  #  define BOOST_PP_ITERATION_PARAMS_1                                            \
          (3, (0, BOOST_PYTHON_MAX_ARITY + 1, <boost/python/detail/signature.hpp>))
  #  include BOOST_PP_ITERATE()
  
  // A metafunction returning the base class used for
  //
  //   signature<class F, class CallPolicies, class Sig>.
  //
  template <class Sig>
  struct signature_base_select
  {
      enum { arity = mpl::size<Sig>::value - 1 };
      typedef typename signature_arity<arity>::template impl<Sig> type;
  };
  
  template <class Sig>
  struct signature
      : signature_base_select<Sig>::type
  {
  };
  
  }}} // namespace boost::python::detail
  
  # endif // SIGNATURE_DWA20021121_HPP
  
  #else
  
  # define N BOOST_PP_ITERATION()
  
  template <>
  struct signature_arity<N>
  {
      template <class Sig>
      struct impl
      {
          static signature_element const* elements()
          {
              static signature_element const result[N+2] = {
                  
  #ifndef BOOST_PYTHON_NO_PY_SIGNATURES
  # define BOOST_PP_LOCAL_MACRO(i)                                                            \
                  {                                                                           \
                    type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name()           \
                    , &converter::expected_pytype_for_arg<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::get_pytype   \
                    , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
                  },
  #else
  # define BOOST_PP_LOCAL_MACRO(i)                                                            \
                  {                                                                           \
                    type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name()           \
                    , 0 \
                    , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
                  },
  #endif
                  
  # define BOOST_PP_LOCAL_LIMITS (0, N)
  # include BOOST_PP_LOCAL_ITERATE()
                  {0,0,0}
              };
              return result;
          }
      };
  };
  
  #endif // BOOST_PP_IS_ITERATING