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authormonster <[email protected]>2022-07-07 14:41:37 +0300
committermonster <[email protected]>2022-07-07 14:41:37 +0300
commit06e5c21a835c0e923506c4ff27929f34e00761c2 (patch)
tree75efcbc6854ef9bd476eb8bf00cc5c900da436a2 /contrib/tools/python3/src/Objects/sliceobject.c
parent03f024c4412e3aa613bb543cf1660176320ba8f4 (diff)
fix ya.make
Diffstat (limited to 'contrib/tools/python3/src/Objects/sliceobject.c')
-rw-r--r--contrib/tools/python3/src/Objects/sliceobject.c670
1 files changed, 0 insertions, 670 deletions
diff --git a/contrib/tools/python3/src/Objects/sliceobject.c b/contrib/tools/python3/src/Objects/sliceobject.c
deleted file mode 100644
index 22fb7c61c35..00000000000
--- a/contrib/tools/python3/src/Objects/sliceobject.c
+++ /dev/null
@@ -1,670 +0,0 @@
-/*
-Written by Jim Hugunin and Chris Chase.
-
-This includes both the singular ellipsis object and slice objects.
-
-Guido, feel free to do whatever you want in the way of copyrights
-for this file.
-*/
-
-/*
-Py_Ellipsis encodes the '...' rubber index token. It is similar to
-the Py_NoneStruct in that there is no way to create other objects of
-this type and there is exactly one in existence.
-*/
-
-#include "Python.h"
-#include "pycore_abstract.h" // _PyIndex_Check()
-#include "pycore_long.h" // _PyLong_GetZero()
-#include "pycore_object.h" // _PyObject_GC_TRACK()
-#include "structmember.h" // PyMemberDef
-
-static PyObject *
-ellipsis_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
-{
- if (PyTuple_GET_SIZE(args) || (kwargs && PyDict_GET_SIZE(kwargs))) {
- PyErr_SetString(PyExc_TypeError, "EllipsisType takes no arguments");
- return NULL;
- }
- Py_INCREF(Py_Ellipsis);
- return Py_Ellipsis;
-}
-
-static PyObject *
-ellipsis_repr(PyObject *op)
-{
- return PyUnicode_FromString("Ellipsis");
-}
-
-static PyObject *
-ellipsis_reduce(PyObject *op, PyObject *Py_UNUSED(ignored))
-{
- return PyUnicode_FromString("Ellipsis");
-}
-
-static PyMethodDef ellipsis_methods[] = {
- {"__reduce__", ellipsis_reduce, METH_NOARGS, NULL},
- {NULL, NULL}
-};
-
-PyTypeObject PyEllipsis_Type = {
- PyVarObject_HEAD_INIT(&PyType_Type, 0)
- "ellipsis", /* tp_name */
- 0, /* tp_basicsize */
- 0, /* tp_itemsize */
- 0, /*never called*/ /* tp_dealloc */
- 0, /* tp_vectorcall_offset */
- 0, /* tp_getattr */
- 0, /* tp_setattr */
- 0, /* tp_as_async */
- ellipsis_repr, /* tp_repr */
- 0, /* tp_as_number */
- 0, /* tp_as_sequence */
- 0, /* tp_as_mapping */
- 0, /* tp_hash */
- 0, /* tp_call */
- 0, /* tp_str */
- PyObject_GenericGetAttr, /* tp_getattro */
- 0, /* tp_setattro */
- 0, /* tp_as_buffer */
- Py_TPFLAGS_DEFAULT, /* tp_flags */
- 0, /* tp_doc */
- 0, /* tp_traverse */
- 0, /* tp_clear */
- 0, /* tp_richcompare */
- 0, /* tp_weaklistoffset */
- 0, /* tp_iter */
- 0, /* tp_iternext */
- ellipsis_methods, /* tp_methods */
- 0, /* tp_members */
- 0, /* tp_getset */
- 0, /* tp_base */
- 0, /* tp_dict */
- 0, /* tp_descr_get */
- 0, /* tp_descr_set */
- 0, /* tp_dictoffset */
- 0, /* tp_init */
- 0, /* tp_alloc */
- ellipsis_new, /* tp_new */
-};
-
-PyObject _Py_EllipsisObject = {
- _PyObject_EXTRA_INIT
- 1, &PyEllipsis_Type
-};
-
-
-/* Slice object implementation */
-
-
-void _PySlice_Fini(PyInterpreterState *interp)
-{
- PySliceObject *obj = interp->slice_cache;
- if (obj != NULL) {
- interp->slice_cache = NULL;
- PyObject_GC_Del(obj);
- }
-}
-
-/* start, stop, and step are python objects with None indicating no
- index is present.
-*/
-
-PyObject *
-PySlice_New(PyObject *start, PyObject *stop, PyObject *step)
-{
- if (step == NULL) {
- step = Py_None;
- }
- if (start == NULL) {
- start = Py_None;
- }
- if (stop == NULL) {
- stop = Py_None;
- }
-
- PyInterpreterState *interp = _PyInterpreterState_GET();
- PySliceObject *obj;
- if (interp->slice_cache != NULL) {
- obj = interp->slice_cache;
- interp->slice_cache = NULL;
- _Py_NewReference((PyObject *)obj);
- }
- else {
- obj = PyObject_GC_New(PySliceObject, &PySlice_Type);
- if (obj == NULL) {
- return NULL;
- }
- }
-
- Py_INCREF(step);
- obj->step = step;
- Py_INCREF(start);
- obj->start = start;
- Py_INCREF(stop);
- obj->stop = stop;
-
- _PyObject_GC_TRACK(obj);
- return (PyObject *) obj;
-}
-
-PyObject *
-_PySlice_FromIndices(Py_ssize_t istart, Py_ssize_t istop)
-{
- PyObject *start, *end, *slice;
- start = PyLong_FromSsize_t(istart);
- if (!start)
- return NULL;
- end = PyLong_FromSsize_t(istop);
- if (!end) {
- Py_DECREF(start);
- return NULL;
- }
-
- slice = PySlice_New(start, end, NULL);
- Py_DECREF(start);
- Py_DECREF(end);
- return slice;
-}
-
-int
-PySlice_GetIndices(PyObject *_r, Py_ssize_t length,
- Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step)
-{
- PySliceObject *r = (PySliceObject*)_r;
- /* XXX support long ints */
- if (r->step == Py_None) {
- *step = 1;
- } else {
- if (!PyLong_Check(r->step)) return -1;
- *step = PyLong_AsSsize_t(r->step);
- }
- if (r->start == Py_None) {
- *start = *step < 0 ? length-1 : 0;
- } else {
- if (!PyLong_Check(r->start)) return -1;
- *start = PyLong_AsSsize_t(r->start);
- if (*start < 0) *start += length;
- }
- if (r->stop == Py_None) {
- *stop = *step < 0 ? -1 : length;
- } else {
- if (!PyLong_Check(r->stop)) return -1;
- *stop = PyLong_AsSsize_t(r->stop);
- if (*stop < 0) *stop += length;
- }
- if (*stop > length) return -1;
- if (*start >= length) return -1;
- if (*step == 0) return -1;
- return 0;
-}
-
-int
-PySlice_Unpack(PyObject *_r,
- Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step)
-{
- PySliceObject *r = (PySliceObject*)_r;
- /* this is harder to get right than you might think */
-
- Py_BUILD_ASSERT(PY_SSIZE_T_MIN + 1 <= -PY_SSIZE_T_MAX);
-
- if (r->step == Py_None) {
- *step = 1;
- }
- else {
- if (!_PyEval_SliceIndex(r->step, step)) return -1;
- if (*step == 0) {
- PyErr_SetString(PyExc_ValueError,
- "slice step cannot be zero");
- return -1;
- }
- /* Here *step might be -PY_SSIZE_T_MAX-1; in this case we replace it
- * with -PY_SSIZE_T_MAX. This doesn't affect the semantics, and it
- * guards against later undefined behaviour resulting from code that
- * does "step = -step" as part of a slice reversal.
- */
- if (*step < -PY_SSIZE_T_MAX)
- *step = -PY_SSIZE_T_MAX;
- }
-
- if (r->start == Py_None) {
- *start = *step < 0 ? PY_SSIZE_T_MAX : 0;
- }
- else {
- if (!_PyEval_SliceIndex(r->start, start)) return -1;
- }
-
- if (r->stop == Py_None) {
- *stop = *step < 0 ? PY_SSIZE_T_MIN : PY_SSIZE_T_MAX;
- }
- else {
- if (!_PyEval_SliceIndex(r->stop, stop)) return -1;
- }
-
- return 0;
-}
-
-Py_ssize_t
-PySlice_AdjustIndices(Py_ssize_t length,
- Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t step)
-{
- /* this is harder to get right than you might think */
-
- assert(step != 0);
- assert(step >= -PY_SSIZE_T_MAX);
-
- if (*start < 0) {
- *start += length;
- if (*start < 0) {
- *start = (step < 0) ? -1 : 0;
- }
- }
- else if (*start >= length) {
- *start = (step < 0) ? length - 1 : length;
- }
-
- if (*stop < 0) {
- *stop += length;
- if (*stop < 0) {
- *stop = (step < 0) ? -1 : 0;
- }
- }
- else if (*stop >= length) {
- *stop = (step < 0) ? length - 1 : length;
- }
-
- if (step < 0) {
- if (*stop < *start) {
- return (*start - *stop - 1) / (-step) + 1;
- }
- }
- else {
- if (*start < *stop) {
- return (*stop - *start - 1) / step + 1;
- }
- }
- return 0;
-}
-
-#undef PySlice_GetIndicesEx
-
-int
-PySlice_GetIndicesEx(PyObject *_r, Py_ssize_t length,
- Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step,
- Py_ssize_t *slicelength)
-{
- if (PySlice_Unpack(_r, start, stop, step) < 0)
- return -1;
- *slicelength = PySlice_AdjustIndices(length, start, stop, *step);
- return 0;
-}
-
-static PyObject *
-slice_new(PyTypeObject *type, PyObject *args, PyObject *kw)
-{
- PyObject *start, *stop, *step;
-
- start = stop = step = NULL;
-
- if (!_PyArg_NoKeywords("slice", kw))
- return NULL;
-
- if (!PyArg_UnpackTuple(args, "slice", 1, 3, &start, &stop, &step))
- return NULL;
-
- /* This swapping of stop and start is to maintain similarity with
- range(). */
- if (stop == NULL) {
- stop = start;
- start = NULL;
- }
- return PySlice_New(start, stop, step);
-}
-
-PyDoc_STRVAR(slice_doc,
-"slice(stop)\n\
-slice(start, stop[, step])\n\
-\n\
-Create a slice object. This is used for extended slicing (e.g. a[0:10:2]).");
-
-static void
-slice_dealloc(PySliceObject *r)
-{
- PyInterpreterState *interp = _PyInterpreterState_GET();
- _PyObject_GC_UNTRACK(r);
- Py_DECREF(r->step);
- Py_DECREF(r->start);
- Py_DECREF(r->stop);
- if (interp->slice_cache == NULL) {
- interp->slice_cache = r;
- }
- else {
- PyObject_GC_Del(r);
- }
-}
-
-static PyObject *
-slice_repr(PySliceObject *r)
-{
- return PyUnicode_FromFormat("slice(%R, %R, %R)", r->start, r->stop, r->step);
-}
-
-static PyMemberDef slice_members[] = {
- {"start", T_OBJECT, offsetof(PySliceObject, start), READONLY},
- {"stop", T_OBJECT, offsetof(PySliceObject, stop), READONLY},
- {"step", T_OBJECT, offsetof(PySliceObject, step), READONLY},
- {0}
-};
-
-/* Helper function to convert a slice argument to a PyLong, and raise TypeError
- with a suitable message on failure. */
-
-static PyObject*
-evaluate_slice_index(PyObject *v)
-{
- if (_PyIndex_Check(v)) {
- return PyNumber_Index(v);
- }
- else {
- PyErr_SetString(PyExc_TypeError,
- "slice indices must be integers or "
- "None or have an __index__ method");
- return NULL;
- }
-}
-
-/* Compute slice indices given a slice and length. Return -1 on failure. Used
- by slice.indices and rangeobject slicing. Assumes that `len` is a
- nonnegative instance of PyLong. */
-
-int
-_PySlice_GetLongIndices(PySliceObject *self, PyObject *length,
- PyObject **start_ptr, PyObject **stop_ptr,
- PyObject **step_ptr)
-{
- PyObject *start=NULL, *stop=NULL, *step=NULL;
- PyObject *upper=NULL, *lower=NULL;
- int step_is_negative, cmp_result;
-
- /* Convert step to an integer; raise for zero step. */
- if (self->step == Py_None) {
- step = _PyLong_GetOne();
- Py_INCREF(step);
- step_is_negative = 0;
- }
- else {
- int step_sign;
- step = evaluate_slice_index(self->step);
- if (step == NULL)
- goto error;
- step_sign = _PyLong_Sign(step);
- if (step_sign == 0) {
- PyErr_SetString(PyExc_ValueError,
- "slice step cannot be zero");
- goto error;
- }
- step_is_negative = step_sign < 0;
- }
-
- /* Find lower and upper bounds for start and stop. */
- if (step_is_negative) {
- lower = PyLong_FromLong(-1L);
- if (lower == NULL)
- goto error;
-
- upper = PyNumber_Add(length, lower);
- if (upper == NULL)
- goto error;
- }
- else {
- lower = _PyLong_GetZero();
- Py_INCREF(lower);
- upper = length;
- Py_INCREF(upper);
- }
-
- /* Compute start. */
- if (self->start == Py_None) {
- start = step_is_negative ? upper : lower;
- Py_INCREF(start);
- }
- else {
- start = evaluate_slice_index(self->start);
- if (start == NULL)
- goto error;
-
- if (_PyLong_Sign(start) < 0) {
- /* start += length */
- PyObject *tmp = PyNumber_Add(start, length);
- Py_DECREF(start);
- start = tmp;
- if (start == NULL)
- goto error;
-
- cmp_result = PyObject_RichCompareBool(start, lower, Py_LT);
- if (cmp_result < 0)
- goto error;
- if (cmp_result) {
- Py_INCREF(lower);
- Py_DECREF(start);
- start = lower;
- }
- }
- else {
- cmp_result = PyObject_RichCompareBool(start, upper, Py_GT);
- if (cmp_result < 0)
- goto error;
- if (cmp_result) {
- Py_INCREF(upper);
- Py_DECREF(start);
- start = upper;
- }
- }
- }
-
- /* Compute stop. */
- if (self->stop == Py_None) {
- stop = step_is_negative ? lower : upper;
- Py_INCREF(stop);
- }
- else {
- stop = evaluate_slice_index(self->stop);
- if (stop == NULL)
- goto error;
-
- if (_PyLong_Sign(stop) < 0) {
- /* stop += length */
- PyObject *tmp = PyNumber_Add(stop, length);
- Py_DECREF(stop);
- stop = tmp;
- if (stop == NULL)
- goto error;
-
- cmp_result = PyObject_RichCompareBool(stop, lower, Py_LT);
- if (cmp_result < 0)
- goto error;
- if (cmp_result) {
- Py_INCREF(lower);
- Py_DECREF(stop);
- stop = lower;
- }
- }
- else {
- cmp_result = PyObject_RichCompareBool(stop, upper, Py_GT);
- if (cmp_result < 0)
- goto error;
- if (cmp_result) {
- Py_INCREF(upper);
- Py_DECREF(stop);
- stop = upper;
- }
- }
- }
-
- *start_ptr = start;
- *stop_ptr = stop;
- *step_ptr = step;
- Py_DECREF(upper);
- Py_DECREF(lower);
- return 0;
-
- error:
- *start_ptr = *stop_ptr = *step_ptr = NULL;
- Py_XDECREF(start);
- Py_XDECREF(stop);
- Py_XDECREF(step);
- Py_XDECREF(upper);
- Py_XDECREF(lower);
- return -1;
-}
-
-/* Implementation of slice.indices. */
-
-static PyObject*
-slice_indices(PySliceObject* self, PyObject* len)
-{
- PyObject *start, *stop, *step;
- PyObject *length;
- int error;
-
- /* Convert length to an integer if necessary; raise for negative length. */
- length = PyNumber_Index(len);
- if (length == NULL)
- return NULL;
-
- if (_PyLong_Sign(length) < 0) {
- PyErr_SetString(PyExc_ValueError,
- "length should not be negative");
- Py_DECREF(length);
- return NULL;
- }
-
- error = _PySlice_GetLongIndices(self, length, &start, &stop, &step);
- Py_DECREF(length);
- if (error == -1)
- return NULL;
- else
- return Py_BuildValue("(NNN)", start, stop, step);
-}
-
-PyDoc_STRVAR(slice_indices_doc,
-"S.indices(len) -> (start, stop, stride)\n\
-\n\
-Assuming a sequence of length len, calculate the start and stop\n\
-indices, and the stride length of the extended slice described by\n\
-S. Out of bounds indices are clipped in a manner consistent with the\n\
-handling of normal slices.");
-
-static PyObject *
-slice_reduce(PySliceObject* self, PyObject *Py_UNUSED(ignored))
-{
- return Py_BuildValue("O(OOO)", Py_TYPE(self), self->start, self->stop, self->step);
-}
-
-PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");
-
-static PyMethodDef slice_methods[] = {
- {"indices", (PyCFunction)slice_indices,
- METH_O, slice_indices_doc},
- {"__reduce__", (PyCFunction)slice_reduce,
- METH_NOARGS, reduce_doc},
- {NULL, NULL}
-};
-
-static PyObject *
-slice_richcompare(PyObject *v, PyObject *w, int op)
-{
- if (!PySlice_Check(v) || !PySlice_Check(w))
- Py_RETURN_NOTIMPLEMENTED;
-
- if (v == w) {
- PyObject *res;
- /* XXX Do we really need this shortcut?
- There's a unit test for it, but is that fair? */
- switch (op) {
- case Py_EQ:
- case Py_LE:
- case Py_GE:
- res = Py_True;
- break;
- default:
- res = Py_False;
- break;
- }
- Py_INCREF(res);
- return res;
- }
-
-
- PyObject *t1 = PyTuple_Pack(3,
- ((PySliceObject *)v)->start,
- ((PySliceObject *)v)->stop,
- ((PySliceObject *)v)->step);
- if (t1 == NULL) {
- return NULL;
- }
-
- PyObject *t2 = PyTuple_Pack(3,
- ((PySliceObject *)w)->start,
- ((PySliceObject *)w)->stop,
- ((PySliceObject *)w)->step);
- if (t2 == NULL) {
- Py_DECREF(t1);
- return NULL;
- }
-
- PyObject *res = PyObject_RichCompare(t1, t2, op);
- Py_DECREF(t1);
- Py_DECREF(t2);
- return res;
-}
-
-static int
-slice_traverse(PySliceObject *v, visitproc visit, void *arg)
-{
- Py_VISIT(v->start);
- Py_VISIT(v->stop);
- Py_VISIT(v->step);
- return 0;
-}
-
-PyTypeObject PySlice_Type = {
- PyVarObject_HEAD_INIT(&PyType_Type, 0)
- "slice", /* Name of this type */
- sizeof(PySliceObject), /* Basic object size */
- 0, /* Item size for varobject */
- (destructor)slice_dealloc, /* tp_dealloc */
- 0, /* tp_vectorcall_offset */
- 0, /* tp_getattr */
- 0, /* tp_setattr */
- 0, /* tp_as_async */
- (reprfunc)slice_repr, /* tp_repr */
- 0, /* tp_as_number */
- 0, /* tp_as_sequence */
- 0, /* tp_as_mapping */
- PyObject_HashNotImplemented, /* tp_hash */
- 0, /* tp_call */
- 0, /* tp_str */
- PyObject_GenericGetAttr, /* tp_getattro */
- 0, /* tp_setattro */
- 0, /* tp_as_buffer */
- Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
- slice_doc, /* tp_doc */
- (traverseproc)slice_traverse, /* tp_traverse */
- 0, /* tp_clear */
- slice_richcompare, /* tp_richcompare */
- 0, /* tp_weaklistoffset */
- 0, /* tp_iter */
- 0, /* tp_iternext */
- slice_methods, /* tp_methods */
- slice_members, /* tp_members */
- 0, /* tp_getset */
- 0, /* tp_base */
- 0, /* tp_dict */
- 0, /* tp_descr_get */
- 0, /* tp_descr_set */
- 0, /* tp_dictoffset */
- 0, /* tp_init */
- 0, /* tp_alloc */
- slice_new, /* tp_new */
-};