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cpython/Include/cellobject.h
Armin Rigo 89a39461bf Wrote down the invariants of some common objects whose structure is
exposed in header files.  Fixed a few comments in these headers.

As we might have expected, writing down invariants systematically exposed a
(minor) bug.  In this case, function objects have a writeable func_code
attribute, which could be set to code objects with the wrong number of
free variables.  Calling the resulting function segfaulted the interpreter.
Added a corresponding test.
2004-10-28 16:32:00 +00:00

29 lines
653 B
C

/* Cell object interface */
#ifndef Py_CELLOBJECT_H
#define Py_CELLOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
PyObject_HEAD
PyObject *ob_ref; /* Content of the cell or NULL when empty */
} PyCellObject;
PyAPI_DATA(PyTypeObject) PyCell_Type;
#define PyCell_Check(op) ((op)->ob_type == &PyCell_Type)
PyAPI_FUNC(PyObject *) PyCell_New(PyObject *);
PyAPI_FUNC(PyObject *) PyCell_Get(PyObject *);
PyAPI_FUNC(int) PyCell_Set(PyObject *, PyObject *);
#define PyCell_GET(op) (((PyCellObject *)(op))->ob_ref)
#define PyCell_SET(op, v) (((PyCellObject *)(op))->ob_ref = v)
#ifdef __cplusplus
}
#endif
#endif /* !Py_TUPLEOBJECT_H */