| // 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; |
| PyTypeObject const* (*expected_pytype)(); |
| rvalue_from_python_chain* next; |
| }; |
| |
| struct BOOST_PYTHON_DECL registration |
| { |
| public: // member functions |
| explicit registration(type_info target, bool is_shared_ptr = false); |
| ~registration(); |
| |
| // 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; |
| |
| // Return common denominator of the python class objects, |
| // convertable to target. Inspects the m_class_object and the value_chains. |
| PyTypeObject const* expected_from_python_type() const; |
| PyTypeObject const* to_python_target_type() 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; |
| PyTypeObject const* (*m_to_python_target_type)(); |
| |
| |
| // 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) |
| , m_to_python_target_type(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 |