Chris@16: // Copyright David Abrahams 2002.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: #ifndef REGISTRATIONS_DWA2002223_HPP
Chris@16: # define REGISTRATIONS_DWA2002223_HPP
Chris@16: 
Chris@16: # include <boost/python/detail/prefix.hpp>
Chris@16: 
Chris@16: # include <boost/python/type_id.hpp>
Chris@16: 
Chris@16: # include <boost/python/converter/convertible_function.hpp>
Chris@16: # include <boost/python/converter/constructor_function.hpp>
Chris@16: # include <boost/python/converter/to_python_function_type.hpp>
Chris@16: 
Chris@16: # include <boost/detail/workaround.hpp>
Chris@16: 
Chris@16: namespace boost { namespace python { namespace converter { 
Chris@16: 
Chris@16: struct lvalue_from_python_chain
Chris@16: {
Chris@16:     convertible_function convert;
Chris@16:     lvalue_from_python_chain* next;
Chris@16: };
Chris@16: 
Chris@16: struct rvalue_from_python_chain
Chris@16: {
Chris@16:     convertible_function convertible;
Chris@16:     constructor_function construct;
Chris@16:     PyTypeObject const* (*expected_pytype)();
Chris@16:     rvalue_from_python_chain* next;
Chris@16: };
Chris@16: 
Chris@16: struct BOOST_PYTHON_DECL registration
Chris@16: {
Chris@16:  public: // member functions
Chris@16:     explicit registration(type_info target, bool is_shared_ptr = false);
Chris@16:    ~registration();
Chris@16:     
Chris@16:     // Convert the appropriately-typed data to Python
Chris@16:     PyObject* to_python(void const volatile*) const;
Chris@16: 
Chris@16:     // Return the class object, or raise an appropriate Python
Chris@16:     // exception if no class has been registered.
Chris@16:     PyTypeObject* get_class_object() const;
Chris@16: 
Chris@16:     // Return common denominator of the python class objects, 
Chris@16:     // convertable to target. Inspects the m_class_object and the value_chains.
Chris@16:     PyTypeObject const* expected_from_python_type() const;
Chris@16:     PyTypeObject const* to_python_target_type() const;
Chris@16: 
Chris@16:  public: // data members. So sue me.
Chris@16:     const python::type_info target_type;
Chris@16: 
Chris@16:     // The chain of eligible from_python converters when an lvalue is required
Chris@16:     lvalue_from_python_chain* lvalue_chain;
Chris@16: 
Chris@16:     // The chain of eligible from_python converters when an rvalue is acceptable
Chris@16:     rvalue_from_python_chain* rvalue_chain;
Chris@16:     
Chris@16:     // The class object associated with this type
Chris@16:     PyTypeObject* m_class_object;
Chris@16: 
Chris@16:     // The unique to_python converter for the associated C++ type.
Chris@16:     to_python_function_t m_to_python;
Chris@16:     PyTypeObject const* (*m_to_python_target_type)();
Chris@16: 
Chris@16: 
Chris@16:     // True iff this type is a shared_ptr.  Needed for special rvalue
Chris@16:     // from_python handling.
Chris@16:     const bool is_shared_ptr;
Chris@16: 
Chris@16: # if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
Chris@16:  private:
Chris@16:     void operator=(registration); // This is not defined, and just keeps MWCW happy.
Chris@16: # endif 
Chris@16: };
Chris@16: 
Chris@16: //
Chris@16: // implementations
Chris@16: //
Chris@16: inline registration::registration(type_info target_type, bool is_shared_ptr)
Chris@16:     : target_type(target_type)
Chris@16:       , lvalue_chain(0)
Chris@16:       , rvalue_chain(0)
Chris@16:       , m_class_object(0)
Chris@16:       , m_to_python(0)
Chris@16:       , m_to_python_target_type(0)
Chris@16:       , is_shared_ptr(is_shared_ptr)
Chris@16: {}
Chris@16: 
Chris@16: inline bool operator<(registration const& lhs, registration const& rhs)
Chris@16: {
Chris@16:     return lhs.target_type < rhs.target_type;
Chris@16: }
Chris@16: 
Chris@16: }}} // namespace boost::python::converter
Chris@16: 
Chris@16: #endif // REGISTRATIONS_DWA2002223_HPP