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78 lines
1.9 KiB
C++
78 lines
1.9 KiB
C++
// Copyright David Abrahams 2002.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef SCOPE_DWA2002724_HPP
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# define SCOPE_DWA2002724_HPP
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# include <boost/python/detail/prefix.hpp>
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# include <boost/python/object.hpp>
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# include <boost/python/refcount.hpp>
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namespace boost { namespace python {
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namespace detail
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{
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// Making this a namespace-scope variable to avoid Cygwin issues.
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// Use a PyObject* to avoid problems with static destruction after Py_Finalize
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extern BOOST_PYTHON_DECL PyObject* current_scope;
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}
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class scope
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: public object
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{
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public:
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inline scope(scope const&);
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inline scope(object const&);
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inline scope();
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inline ~scope();
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private: // data members
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PyObject* m_previous_scope;
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private: // unimplemented functions
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void operator=(scope const&);
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};
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inline scope::scope(object const& new_scope)
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: object(new_scope)
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, m_previous_scope(detail::current_scope)
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{
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detail::current_scope = python::incref(new_scope.ptr());
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}
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inline scope::scope()
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: object(detail::borrowed_reference(
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detail::current_scope ? detail::current_scope : Py_None
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))
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, m_previous_scope(python::xincref(detail::current_scope))
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{
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}
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inline scope::~scope()
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{
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python::xdecref(detail::current_scope);
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detail::current_scope = m_previous_scope;
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}
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namespace converter
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{
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template <>
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struct object_manager_traits<scope>
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: object_manager_traits<object>
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{
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};
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}
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// Placing this after the specialization above suppresses a CWPro8.3 bug
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inline scope::scope(scope const& new_scope)
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: object(new_scope)
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, m_previous_scope(detail::current_scope)
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{
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detail::current_scope = python::incref(new_scope.ptr());
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}
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}} // namespace boost::python
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#endif // SCOPE_DWA2002724_HPP
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