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annotate test/include/python2.7/listobject.h @ 3:7d1a9a91b989 draft

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author yating-l
date Thu, 18 May 2017 18:37:28 -0400
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1
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2 /* List object interface */
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4 /*
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5 Another generally useful object type is a list of object pointers.
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6 This is a mutable type: the list items can be changed, and items can be
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7 added or removed. Out-of-range indices or non-list objects are ignored.
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9 *** WARNING *** PyList_SetItem does not increment the new item's reference
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10 count, but does decrement the reference count of the item it replaces,
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11 if not nil. It does *decrement* the reference count if it is *not*
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12 inserted in the list. Similarly, PyList_GetItem does not increment the
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13 returned item's reference count.
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14 */
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16 #ifndef Py_LISTOBJECT_H
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17 #define Py_LISTOBJECT_H
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18 #ifdef __cplusplus
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19 extern "C" {
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20 #endif
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22 typedef struct {
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23 PyObject_VAR_HEAD
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24 /* Vector of pointers to list elements. list[0] is ob_item[0], etc. */
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25 PyObject **ob_item;
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27 /* ob_item contains space for 'allocated' elements. The number
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28 * currently in use is ob_size.
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29 * Invariants:
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30 * 0 <= ob_size <= allocated
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31 * len(list) == ob_size
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32 * ob_item == NULL implies ob_size == allocated == 0
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33 * list.sort() temporarily sets allocated to -1 to detect mutations.
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34 *
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35 * Items must normally not be NULL, except during construction when
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36 * the list is not yet visible outside the function that builds it.
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37 */
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38 Py_ssize_t allocated;
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39 } PyListObject;
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41 PyAPI_DATA(PyTypeObject) PyList_Type;
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43 #define PyList_Check(op) \
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44 PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_LIST_SUBCLASS)
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45 #define PyList_CheckExact(op) (Py_TYPE(op) == &PyList_Type)
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47 PyAPI_FUNC(PyObject *) PyList_New(Py_ssize_t size);
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48 PyAPI_FUNC(Py_ssize_t) PyList_Size(PyObject *);
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49 PyAPI_FUNC(PyObject *) PyList_GetItem(PyObject *, Py_ssize_t);
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50 PyAPI_FUNC(int) PyList_SetItem(PyObject *, Py_ssize_t, PyObject *);
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51 PyAPI_FUNC(int) PyList_Insert(PyObject *, Py_ssize_t, PyObject *);
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52 PyAPI_FUNC(int) PyList_Append(PyObject *, PyObject *);
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53 PyAPI_FUNC(PyObject *) PyList_GetSlice(PyObject *, Py_ssize_t, Py_ssize_t);
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54 PyAPI_FUNC(int) PyList_SetSlice(PyObject *, Py_ssize_t, Py_ssize_t, PyObject *);
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55 PyAPI_FUNC(int) PyList_Sort(PyObject *);
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56 PyAPI_FUNC(int) PyList_Reverse(PyObject *);
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57 PyAPI_FUNC(PyObject *) PyList_AsTuple(PyObject *);
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58 PyAPI_FUNC(PyObject *) _PyList_Extend(PyListObject *, PyObject *);
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60 /* Macro, trading safety for speed */
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61 #define PyList_GET_ITEM(op, i) (((PyListObject *)(op))->ob_item[i])
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62 #define PyList_SET_ITEM(op, i, v) (((PyListObject *)(op))->ob_item[i] = (v))
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63 #define PyList_GET_SIZE(op) Py_SIZE(op)
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64
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65 #ifdef __cplusplus
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66 }
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67 #endif
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68 #endif /* !Py_LISTOBJECT_H */