1#ifndef Py_SLICEOBJECT_H
2#define Py_SLICEOBJECT_H
3#ifdef __cplusplus
4extern "C" {
5#endif
6
7/* The unique ellipsis object "..." */
8
9PyAPI_DATA(PyObject) _Py_EllipsisObject; /* Don't use this directly */
10
11#define Py_Ellipsis (&_Py_EllipsisObject)
12
13/* Slice object interface */
14
15/*
16
17A slice object containing start, stop, and step data members (the
18names are from range). After much talk with Guido, it was decided to
19let these be any arbitrary python type. Py_None stands for omitted values.
20*/
21#ifndef Py_LIMITED_API
22typedef struct {
23 PyObject_HEAD
24 PyObject *start, *stop, *step; /* not NULL */
25} PySliceObject;
26#endif
27
28PyAPI_DATA(PyTypeObject) PySlice_Type;
29PyAPI_DATA(PyTypeObject) PyEllipsis_Type;
30
31#define PySlice_Check(op) Py_IS_TYPE(op, &PySlice_Type)
32
33PyAPI_FUNC(PyObject *) PySlice_New(PyObject* start, PyObject* stop,
34 PyObject* step);
35#ifndef Py_LIMITED_API
36PyAPI_FUNC(PyObject *) _PySlice_FromIndices(Py_ssize_t start, Py_ssize_t stop);
37PyAPI_FUNC(int) _PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
38 PyObject **start_ptr, PyObject **stop_ptr,
39 PyObject **step_ptr);
40#endif
41PyAPI_FUNC(int) PySlice_GetIndices(PyObject *r, Py_ssize_t length,
42 Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step);
43Py_DEPRECATED(3.7)
44PyAPI_FUNC(int) PySlice_GetIndicesEx(PyObject *r, Py_ssize_t length,
45 Py_ssize_t *start, Py_ssize_t *stop,
46 Py_ssize_t *step,
47 Py_ssize_t *slicelength);
48
49#if !defined(Py_LIMITED_API) || (Py_LIMITED_API+0 >= 0x03050400 && Py_LIMITED_API+0 < 0x03060000) || Py_LIMITED_API+0 >= 0x03060100
50#define PySlice_GetIndicesEx(slice, length, start, stop, step, slicelen) ( \
51 PySlice_Unpack((slice), (start), (stop), (step)) < 0 ? \
52 ((*(slicelen) = 0), -1) : \
53 ((*(slicelen) = PySlice_AdjustIndices((length), (start), (stop), *(step))), \
54 0))
55PyAPI_FUNC(int) PySlice_Unpack(PyObject *slice,
56 Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step);
57PyAPI_FUNC(Py_ssize_t) PySlice_AdjustIndices(Py_ssize_t length,
58 Py_ssize_t *start, Py_ssize_t *stop,
59 Py_ssize_t step);
60#endif
61
62#ifdef __cplusplus
63}
64#endif
65#endif /* !Py_SLICEOBJECT_H */
66

source code of include/python3.10/sliceobject.h