ceph/src/boost/libs/python/include/boost/python/detail/make_keyword_range_fn.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 MAKE_KEYWORD_RANGE_FN_DWA2002927_HPP
   6 # define MAKE_KEYWORD_RANGE_FN_DWA2002927_HPP
   7
   8 # include <boost/python/make_function.hpp>
   9 # include <boost/python/args_fwd.hpp>
  10
  11 # include <boost/python/object/make_holder.hpp>
  12
  13 # include <boost/mpl/size.hpp>
  14
  15
  16 namespace boost { namespace python { namespace detail {
  17
  18 // Think of this as a version of make_function without a compile-time
  19 // check that the size of kw is no greater than the expected arity of
  20 // F. This version is needed when defining functions with default
  21 // arguments, because compile-time information about the number of
  22 // keywords is missing for all but the initial function definition.
  23 //
  24 // @group make_keyword_range_function {
  25 template <class F, class Policies>
  26 object make_keyword_range_function(
  27     F f
  28   , Policies const& policies
  29   , keyword_range const& kw)
  30 {
  31     return detail::make_function_aux(
  32         f, policies, detail::get_signature(f), kw, mpl::int_<0>());
  33 }
  34
  35 template <class F, class Policies, class Signature>
  36 object make_keyword_range_function(
  37     F f
  38   , Policies const& policies
  39   , keyword_range const& kw
  40   , Signature const& sig)
  41 {
  42     return detail::make_function_aux(
  43         f, policies, sig, kw, mpl::int_<0>());
  44 }
  45 // }
  46
  47 // Builds an '__init__' function which inserts the given Holder type
  48 // in a wrapped C++ class instance. ArgList is an MPL type sequence
  49 // describing the C++ argument types to be passed to Holder's
  50 // constructor.
  51 //
  52 // Holder and ArgList are intended to be explicitly specified.
  53 template <class ArgList, class Arity, class Holder, class CallPolicies>
  54 object make_keyword_range_constructor(
  55     CallPolicies const& policies        // The CallPolicies with which to invoke the Holder's constructor
  56     , detail::keyword_range const& kw   // The (possibly empty) set of associated argument keywords
  57     , Holder* = 0
  58     , ArgList* = 0, Arity* = 0)
  59 {
  60 #if !defined( BOOST_PYTHON_NO_PY_SIGNATURES) && defined( BOOST_PYTHON_PY_SIGNATURES_PROPER_INIT_SELF_TYPE)
  61     python_class<BOOST_DEDUCED_TYPENAME Holder::value_type>::register_();
  62 #endif
  63     return detail::make_keyword_range_function(
  64         objects::make_holder<Arity::value>
  65             ::template apply<Holder,ArgList>::execute
  66         , policies
  67         , kw);
  68 }
  69
  70 }}} // namespace boost::python::detail
  71
  72 #endif // MAKE_KEYWORD_RANGE_FN_DWA2002927_HPP