// 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 REGISTRATIONS_DWA2002223_HPP

 # define REGISTRATIONS_DWA2002223_HPP

 # include <boost/python/detail/prefix.hpp>

 # include <boost/python/type_id.hpp>

 # include <boost/python/converter/convertible_function.hpp>

 # include <boost/python/converter/constructor_function.hpp>

 # include <boost/python/converter/to_python_function_type.hpp>

 # include <boost/detail/workaround.hpp>

 namespace boost { namespace python { namespace converter { 

 struct lvalue_from_python_chain

 {

     convertible_function convert;

     lvalue_from_python_chain* next;

 };

 struct rvalue_from_python_chain

 {

     convertible_function convertible;

     constructor_function construct;

     rvalue_from_python_chain* next;

 };

 struct BOOST_PYTHON_DECL registration

 {

  public: // member functions

     explicit registration(type_info target, bool is_shared_ptr = false);

     // Convert the appropriately-typed data to Python

     PyObject* to_python(void const volatile*) const;

     // Return the class object, or raise an appropriate Python

     // exception if no class has been registered.

     PyTypeObject* get_class_object() const;

  public: // data members. So sue me.

     const python::type_info target_type;

     // The chain of eligible from_python converters when an lvalue is required

     lvalue_from_python_chain* lvalue_chain;

     // The chain of eligible from_python converters when an rvalue is acceptable

     rvalue_from_python_chain* rvalue_chain;

     // The class object associated with this type

     PyTypeObject* m_class_object;

     // The unique to_python converter for the associated C++ type.

     to_python_function_t m_to_python;

     // True iff this type is a shared_ptr.  Needed for special rvalue

     // from_python handling.

     const bool is_shared_ptr;

 # if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))

  private:

     void operator=(registration); // This is not defined, and just keeps MWCW happy.

 # endif 

 };

 //

 // implementations

 //

 inline registration::registration(type_info target_type, bool is_shared_ptr)

     : target_type(target_type)

       , lvalue_chain(0)

       , rvalue_chain(0)

       , m_class_object(0)

       , m_to_python(0)

       , is_shared_ptr(is_shared_ptr)

 {}

 inline bool operator<(registration const& lhs, registration const& rhs)

 {

     return lhs.target_type < rhs.target_type;

 }

 }}} // namespace boost::python::converter

 #endif // REGISTRATIONS_DWA2002223_HPP