| // 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 SCOPE_DWA2002724_HPP |
| # define SCOPE_DWA2002724_HPP |
| |
| # include <boost/python/detail/prefix.hpp> |
| # include <boost/python/object.hpp> |
| # include <boost/python/refcount.hpp> |
| # include <boost/utility.hpp> |
| |
| namespace boost { namespace python { |
| |
| namespace detail |
| { |
| // Making this a namespace-scope variable to avoid Cygwin issues. |
| // Use a PyObject* to avoid problems with static destruction after Py_Finalize |
| extern BOOST_PYTHON_DECL PyObject* current_scope; |
| } |
| |
| class scope |
| : public object |
| { |
| public: |
| inline scope(scope const&); |
| inline scope(object const&); |
| inline scope(); |
| inline ~scope(); |
| |
| private: // data members |
| PyObject* m_previous_scope; |
| |
| private: // unimplemented functions |
| void operator=(scope const&); |
| }; |
| |
| inline scope::scope(object const& new_scope) |
| : object(new_scope) |
| , m_previous_scope(detail::current_scope) |
| { |
| detail::current_scope = python::incref(new_scope.ptr()); |
| } |
| |
| inline scope::scope() |
| : object(detail::borrowed_reference( |
| detail::current_scope ? detail::current_scope : Py_None |
| )) |
| , m_previous_scope(python::xincref(detail::current_scope)) |
| { |
| } |
| |
| inline scope::~scope() |
| { |
| python::xdecref(detail::current_scope); |
| detail::current_scope = m_previous_scope; |
| } |
| |
| namespace converter |
| { |
| template <> |
| struct object_manager_traits<scope> |
| : object_manager_traits<object> |
| { |
| }; |
| } |
| |
| // Placing this after the specialization above suppresses a CWPro8.3 bug |
| inline scope::scope(scope const& new_scope) |
| : object(new_scope) |
| , m_previous_scope(detail::current_scope) |
| { |
| detail::current_scope = python::incref(new_scope.ptr()); |
| } |
| |
| }} // namespace boost::python |
| |
| #endif // SCOPE_DWA2002724_HPP |