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/* Weak references objects for Python. */
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#ifndef Py_WEAKREFOBJECT_H
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#define Py_WEAKREFOBJECT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _PyWeakReference PyWeakReference;
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struct _PyWeakReference {
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PyObject_HEAD
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PyObject *wr_object;
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PyObject *wr_callback;
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long hash;
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PyWeakReference *wr_prev;
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PyWeakReference *wr_next;
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};
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PyAPI_DATA(PyTypeObject) _PyWeakref_RefType;
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PyAPI_DATA(PyTypeObject) _PyWeakref_ProxyType;
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PyAPI_DATA(PyTypeObject) _PyWeakref_CallableProxyType;
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#define PyWeakref_CheckRef(op) \
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((op)->ob_type == &_PyWeakref_RefType)
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#define PyWeakref_CheckProxy(op) \
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(((op)->ob_type == &_PyWeakref_ProxyType) || \
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((op)->ob_type == &_PyWeakref_CallableProxyType))
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#define PyWeakref_Check(op) \
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(PyWeakref_CheckRef(op) || PyWeakref_CheckProxy(op))
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PyAPI_FUNC(PyObject *) PyWeakref_NewRef(PyObject *ob,
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PyObject *callback);
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PyAPI_FUNC(PyObject *) PyWeakref_NewProxy(PyObject *ob,
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PyObject *callback);
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PyAPI_FUNC(PyObject *) PyWeakref_GetObject(PyObject *ref);
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PyAPI_FUNC(long) _PyWeakref_GetWeakrefCount(PyWeakReference *head);
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PyAPI_FUNC(void) _PyWeakref_ClearRef(PyWeakReference *self);
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#define PyWeakref_GET_OBJECT(ref) (((PyWeakReference *)(ref))->wr_object)
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_WEAKREFOBJECT_H */
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