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annotate Include/tupleobject.h @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 9e4d1a6307f6
children c1eb668525e1
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2 /* Tuple object interface */
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4 #ifndef Py_TUPLEOBJECT_H
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5 #define Py_TUPLEOBJECT_H
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6 #ifdef __cplusplus
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7 extern "C" {
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8 #endif
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10 /*
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11 Another generally useful object type is an tuple of object pointers.
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12 This is a mutable type: the tuple items can be changed (but not their
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13 number). Out-of-range indices or non-tuple objects are ignored.
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15 *** WARNING *** PyTuple_SetItem does not increment the new item's reference
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16 count, but does decrement the reference count of the item it replaces,
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17 if not nil. It does *decrement* the reference count if it is *not*
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18 inserted in the tuple. Similarly, PyTuple_GetItem does not increment the
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19 returned item's reference count.
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20 */
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22 typedef struct {
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23 PyObject_VAR_HEAD
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24 PyObject *ob_item[1];
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25 } PyTupleObject;
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27 extern DL_IMPORT(PyTypeObject) PyTuple_Type;
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29 #define PyTuple_Check(op) PyObject_TypeCheck(op, &PyTuple_Type)
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30 #define PyTuple_CheckExact(op) ((op)->ob_type == &PyTuple_Type)
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32 extern DL_IMPORT(PyObject *) PyTuple_New(int size);
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33 extern DL_IMPORT(int) PyTuple_Size(PyObject *);
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34 extern DL_IMPORT(PyObject *) PyTuple_GetItem(PyObject *, int);
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35 extern DL_IMPORT(int) PyTuple_SetItem(PyObject *, int, PyObject *);
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36 extern DL_IMPORT(PyObject *) PyTuple_GetSlice(PyObject *, int, int);
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37 extern DL_IMPORT(int) _PyTuple_Resize(PyObject **, int);
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39 /* Macro, trading safety for speed */
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40 #define PyTuple_GET_ITEM(op, i) (((PyTupleObject *)(op))->ob_item[i])
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41 #define PyTuple_GET_SIZE(op) (((PyTupleObject *)(op))->ob_size)
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43 /* Macro, *only* to be used to fill in brand new tuples */
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44 #define PyTuple_SET_ITEM(op, i, v) (((PyTupleObject *)(op))->ob_item[i] = v)
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46 #ifdef __cplusplus
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47 }
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48 #endif
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49 #endif /* !Py_TUPLEOBJECT_H */