boost/python/args_fwd.hpp

   1 // Copyright David Abrahams 2002.
   2 // Distributed under the Boost Software License, Version 1.0. (See
   3 // accompanying file LICENSE_1_0.txt or copy at
   4 // http://www.boost.org/LICENSE_1_0.txt)
   5 #ifndef ARGS_FWD_DWA2002927_HPP
   6 # define ARGS_FWD_DWA2002927_HPP
   7
   8 # include <boost/python/detail/prefix.hpp>
   9
  10 # include <boost/python/handle.hpp>
  11 # include <boost/config.hpp>
  12 # include <cstddef>
  13 # include <utility>
  14
  15 namespace boost { namespace python {
  16
  17 namespace detail
  18 {
  19   struct keyword
  20   {
  21       keyword(char const* name_=0)
  22        : name(name_)
  23       {}
  24
  25       char const* name;
  26       handle<> default_value;
  27   };
  28
  29   template <std::size_t nkeywords = 0> struct keywords;
  30
  31   typedef std::pair<keyword const*, keyword const*> keyword_range;
  32
  33   template <>
  34   struct keywords<0>
  35   {
  36       BOOST_STATIC_CONSTANT(std::size_t, size = 0);
  37       static keyword_range range() { return keyword_range(); }
  38   };
  39
  40   namespace error
  41   {
  42     template <int keywords, int function_args>
  43     struct more_keywords_than_function_arguments
  44     {
  45         typedef char too_many_keywords[keywords > function_args ? -1 : 1];
  46     };
  47   }
  48 }
  49
  50 }} // namespace boost::python
  51
  52 #endif // ARGS_FWD_DWA2002927_HPP