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listobject.h 2.9 KB

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