git.sesse.net Git - casparcg/blob - dependencies/boost/boost/python/detail/signature.hpp

   1 #if !defined(BOOST_PP_IS_ITERATING)
   2
   3 // Copyright David Abrahams 2002.
   4 // Distributed under the Boost Software License, Version 1.0. (See
   5 // accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7
   8 # ifndef SIGNATURE_DWA20021121_HPP
   9 #  define SIGNATURE_DWA20021121_HPP
  10
  11 #  include <boost/python/type_id.hpp>
  12
  13 #  include <boost/python/detail/preprocessor.hpp>
  14 #  include <boost/python/detail/indirect_traits.hpp>
  15 #  include <boost/python/converter/pytype_function.hpp>
  16
  17 #  include <boost/preprocessor/iterate.hpp>
  18 #  include <boost/preprocessor/iteration/local.hpp>
  19
  20 #  include <boost/mpl/at.hpp>
  21 #  include <boost/mpl/size.hpp>
  22
  23 namespace boost { namespace python { namespace detail {
  24
  25 struct signature_element
  26 {
  27     char const* basename;
  28     converter::pytype_function pytype_f;
  29     bool lvalue;
  30 };
  31
  32 struct py_func_sig_info
  33 {
  34     signature_element const *signature;
  35     signature_element const *ret;
  36 };
  37
  38 template <unsigned> struct signature_arity;
  39
  40 #  define BOOST_PP_ITERATION_PARAMS_1                                            \
  41         (3, (0, BOOST_PYTHON_MAX_ARITY + 1, <boost/python/detail/signature.hpp>))
  42 #  include BOOST_PP_ITERATE()
  43
  44 // A metafunction returning the base class used for
  45 //
  46 //   signature<class F, class CallPolicies, class Sig>.
  47 //
  48 template <class Sig>
  49 struct signature_base_select
  50 {
  51     enum { arity = mpl::size<Sig>::value - 1 };
  52     typedef typename signature_arity<arity>::template impl<Sig> type;
  53 };
  54
  55 template <class Sig>
  56 struct signature
  57     : signature_base_select<Sig>::type
  58 {
  59 };
  60
  61 }}} // namespace boost::python::detail
  62
  63 # endif // SIGNATURE_DWA20021121_HPP
  64
  65 #else
  66
  67 # define N BOOST_PP_ITERATION()
  68
  69 template <>
  70 struct signature_arity<N>
  71 {
  72     template <class Sig>
  73     struct impl
  74     {
  75         static signature_element const* elements()
  76         {
  77             static signature_element const result[N+2] = {
  78
  79 #ifndef BOOST_PYTHON_NO_PY_SIGNATURES
  80 # define BOOST_PP_LOCAL_MACRO(i)                                                            \
  81                 {                                                                           \
  82                   type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name()           \
  83                   , &converter::expected_pytype_for_arg<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::get_pytype   \
  84                   , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
  85                 },
  86 #else
  87 # define BOOST_PP_LOCAL_MACRO(i)                                                            \
  88                 {                                                                           \
  89                   type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name()           \
  90                   , 0 \
  91                   , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
  92                 },
  93 #endif
  94
  95 # define BOOST_PP_LOCAL_LIMITS (0, N)
  96 # include BOOST_PP_LOCAL_ITERATE()
  97                 {0,0,0}
  98             };
  99             return result;
 100         }
 101     };
 102 };
 103
 104 #endif // BOOST_PP_IS_ITERATING
 105
 106