bpo-41073: PyType_GetSlot() can now accept static types. (GH-21931)
PyType_GetSlot() can now accept static types. Co-Authored-By: Petr Viktorin <encukou@gmail.com> Automerge-Triggered-By: GH:encukou
This commit is contained in:
Hai Shi
GitHub
parent
ace3f9a0ce
commit
a13b26cac1
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@ -105,10 +105,12 @@ Type Objects
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See :c:member:`PyType_Slot.slot` for possible values of the *slot* argument.
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An exception is raised if *type* is not a heap type.
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.. versionadded:: 3.4
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.. versionchanged:: 3.10
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:c:func:`PyType_GetSlot` can now accept all types.
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Previously, it was limited to heap types.
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.. c:function:: PyObject* PyType_GetModule(PyTypeObject *type)
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Return the module object associated with the given type when the type was
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@ -436,6 +436,9 @@ New Features
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slot.
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(Contributed by Hai Shi in :issue:`41832`.)
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* The :c:func:`PyType_GetSlot` function can accept static types.
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(Contributed by Hai Shi and Petr Viktorin in :issue:`41073`.)
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Porting to Python 3.10
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----------------------
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@ -0,0 +1 @@
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:c:func:`PyType_GetSlot()` can now accept static types.
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@ -1018,6 +1018,62 @@ test_buildvalue_N(PyObject *self, PyObject *Py_UNUSED(ignored))
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}
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static PyObject *
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test_get_statictype_slots(PyObject *self, PyObject *Py_UNUSED(ignored))
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{
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newfunc tp_new = PyType_GetSlot(&PyLong_Type, Py_tp_new);
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if (PyLong_Type.tp_new != tp_new) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: tp_new of long");
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return NULL;
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}
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reprfunc tp_repr = PyType_GetSlot(&PyLong_Type, Py_tp_repr);
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if (PyLong_Type.tp_repr != tp_repr) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: tp_repr of long");
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return NULL;
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}
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ternaryfunc tp_call = PyType_GetSlot(&PyLong_Type, Py_tp_call);
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if (tp_call != NULL) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: tp_call of long");
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return NULL;
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}
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binaryfunc nb_add = PyType_GetSlot(&PyLong_Type, Py_nb_add);
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if (PyLong_Type.tp_as_number->nb_add != nb_add) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: nb_add of long");
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return NULL;
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}
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lenfunc mp_length = PyType_GetSlot(&PyLong_Type, Py_mp_length);
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if (mp_length != NULL) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: mp_length of long");
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return NULL;
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}
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void *over_value = PyType_GetSlot(&PyLong_Type, Py_bf_releasebuffer + 1);
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if (over_value != NULL) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: max+1 of long");
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return NULL;
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}
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tp_new = PyType_GetSlot(&PyLong_Type, 0);
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if (tp_new != NULL) {
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PyErr_SetString(PyExc_AssertionError, "mismatch: slot 0 of long");
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return NULL;
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}
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if (PyErr_ExceptionMatches(PyExc_SystemError)) {
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// This is the right exception
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PyErr_Clear();
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}
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else {
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return NULL;
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}
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Py_RETURN_NONE;
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}
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static PyObject *
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get_args(PyObject *self, PyObject *args)
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{
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@ -5628,7 +5684,9 @@ static PyMethodDef TestMethods[] = {
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{"test_buildvalue_N", test_buildvalue_N, METH_NOARGS},
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{"test_buildvalue_issue38913", test_buildvalue_issue38913, METH_NOARGS},
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{"get_args", get_args, METH_VARARGS},
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{"get_kwargs", (PyCFunction)(void(*)(void))get_kwargs, METH_VARARGS|METH_KEYWORDS},
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{"test_get_statictype_slots", test_get_statictype_slots, METH_NOARGS},
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{"get_kwargs", (PyCFunction)(void(*)(void))get_kwargs,
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METH_VARARGS|METH_KEYWORDS},
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{"getargs_tuple", getargs_tuple, METH_VARARGS},
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{"getargs_keywords", (PyCFunction)(void(*)(void))getargs_keywords,
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METH_VARARGS|METH_KEYWORDS},
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@ -56,6 +56,11 @@ static struct method_cache_entry method_cache[1 << MCACHE_SIZE_EXP];
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static unsigned int next_version_tag = 0;
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#endif
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typedef struct PySlot_Offset {
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short subslot_offset;
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short slot_offset;
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} PySlot_Offset;
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#define MCACHE_STATS 0
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#if MCACHE_STATS
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@ -2870,8 +2875,18 @@ error:
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return NULL;
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}
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static const short slotoffsets[] = {
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-1, /* invalid slot */
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/* An array of type slot offsets corresponding to Py_tp_* constants,
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* for use in e.g. PyType_Spec and PyType_GetSlot.
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* Each entry has two offsets: "slot_offset" and "subslot_offset".
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* If is subslot_offset is -1, slot_offset is an offset within the
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* PyTypeObject struct.
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* Otherwise slot_offset is an offset to a pointer to a sub-slots struct
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* (such as "tp_as_number"), and subslot_offset is the offset within
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* that struct.
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* The actual table is generated by a script.
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*/
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static const PySlot_Offset pyslot_offsets[] = {
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{0, 0},
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#include "typeslots.inc"
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};
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@ -2892,6 +2907,7 @@ PyType_FromModuleAndSpec(PyObject *module, PyType_Spec *spec, PyObject *bases)
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const PyType_Slot *slot;
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Py_ssize_t nmembers, weaklistoffset, dictoffset, vectorcalloffset;
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char *res_start;
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short slot_offset, subslot_offset;
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nmembers = weaklistoffset = dictoffset = vectorcalloffset = 0;
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for (slot = spec->slots; slot->slot; slot++) {
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@ -3001,7 +3017,7 @@ PyType_FromModuleAndSpec(PyObject *module, PyType_Spec *spec, PyObject *bases)
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for (slot = spec->slots; slot->slot; slot++) {
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if (slot->slot < 0
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|| (size_t)slot->slot >= Py_ARRAY_LENGTH(slotoffsets)) {
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|| (size_t)slot->slot >= Py_ARRAY_LENGTH(pyslot_offsets)) {
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PyErr_SetString(PyExc_RuntimeError, "invalid slot offset");
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goto fail;
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}
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@ -3034,7 +3050,15 @@ PyType_FromModuleAndSpec(PyObject *module, PyType_Spec *spec, PyObject *bases)
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}
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else {
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/* Copy other slots directly */
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*(void**)(res_start + slotoffsets[slot->slot]) = slot->pfunc;
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PySlot_Offset slotoffsets = pyslot_offsets[slot->slot];
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slot_offset = slotoffsets.slot_offset;
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if (slotoffsets.subslot_offset == -1) {
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*(void**)((char*)res_start + slot_offset) = slot->pfunc;
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} else {
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void *parent_slot = *(void**)((char*)res_start + slot_offset);
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subslot_offset = slotoffsets.subslot_offset;
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*(void**)((char*)parent_slot + subslot_offset) = slot->pfunc;
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}
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}
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}
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if (type->tp_dealloc == NULL) {
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@ -3117,15 +3141,23 @@ PyType_FromSpec(PyType_Spec *spec)
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void *
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PyType_GetSlot(PyTypeObject *type, int slot)
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{
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if (!_PyType_HasFeature(type, Py_TPFLAGS_HEAPTYPE) || slot < 0) {
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void *parent_slot;
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int slots_len = Py_ARRAY_LENGTH(pyslot_offsets);
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if (slot <= 0 || slot >= slots_len) {
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PyErr_BadInternalCall();
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return NULL;
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}
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if ((size_t)slot >= Py_ARRAY_LENGTH(slotoffsets)) {
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/* Extension module requesting slot from a future version */
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parent_slot = *(void**)((char*)type + pyslot_offsets[slot].slot_offset);
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if (parent_slot == NULL) {
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return NULL;
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}
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return *(void**)(((char*)type) + slotoffsets[slot]);
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/* Return slot directly if we have no sub slot. */
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if (pyslot_offsets[slot].subslot_offset == -1) {
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return parent_slot;
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}
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return *(void**)((char*)parent_slot + pyslot_offsets[slot].subslot_offset);
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}
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PyObject *
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@ -1,82 +1,82 @@
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/* Generated by typeslots.py */
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offsetof(PyHeapTypeObject, as_buffer.bf_getbuffer),
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offsetof(PyHeapTypeObject, as_buffer.bf_releasebuffer),
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offsetof(PyHeapTypeObject, as_mapping.mp_ass_subscript),
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offsetof(PyHeapTypeObject, as_mapping.mp_length),
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offsetof(PyHeapTypeObject, as_mapping.mp_subscript),
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offsetof(PyHeapTypeObject, as_number.nb_absolute),
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offsetof(PyHeapTypeObject, as_number.nb_add),
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offsetof(PyHeapTypeObject, as_number.nb_and),
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offsetof(PyHeapTypeObject, as_number.nb_bool),
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offsetof(PyHeapTypeObject, as_number.nb_divmod),
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offsetof(PyHeapTypeObject, as_number.nb_float),
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offsetof(PyHeapTypeObject, as_number.nb_floor_divide),
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offsetof(PyHeapTypeObject, as_number.nb_index),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_add),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_and),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_floor_divide),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_lshift),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_multiply),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_or),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_power),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_remainder),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_rshift),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_subtract),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_true_divide),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_xor),
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offsetof(PyHeapTypeObject, as_number.nb_int),
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offsetof(PyHeapTypeObject, as_number.nb_invert),
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offsetof(PyHeapTypeObject, as_number.nb_lshift),
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offsetof(PyHeapTypeObject, as_number.nb_multiply),
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offsetof(PyHeapTypeObject, as_number.nb_negative),
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offsetof(PyHeapTypeObject, as_number.nb_or),
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offsetof(PyHeapTypeObject, as_number.nb_positive),
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offsetof(PyHeapTypeObject, as_number.nb_power),
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offsetof(PyHeapTypeObject, as_number.nb_remainder),
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offsetof(PyHeapTypeObject, as_number.nb_rshift),
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offsetof(PyHeapTypeObject, as_number.nb_subtract),
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offsetof(PyHeapTypeObject, as_number.nb_true_divide),
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offsetof(PyHeapTypeObject, as_number.nb_xor),
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offsetof(PyHeapTypeObject, as_sequence.sq_ass_item),
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offsetof(PyHeapTypeObject, as_sequence.sq_concat),
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offsetof(PyHeapTypeObject, as_sequence.sq_contains),
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offsetof(PyHeapTypeObject, as_sequence.sq_inplace_concat),
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offsetof(PyHeapTypeObject, as_sequence.sq_inplace_repeat),
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offsetof(PyHeapTypeObject, as_sequence.sq_item),
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offsetof(PyHeapTypeObject, as_sequence.sq_length),
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offsetof(PyHeapTypeObject, as_sequence.sq_repeat),
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offsetof(PyHeapTypeObject, ht_type.tp_alloc),
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offsetof(PyHeapTypeObject, ht_type.tp_base),
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offsetof(PyHeapTypeObject, ht_type.tp_bases),
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offsetof(PyHeapTypeObject, ht_type.tp_call),
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offsetof(PyHeapTypeObject, ht_type.tp_clear),
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offsetof(PyHeapTypeObject, ht_type.tp_dealloc),
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offsetof(PyHeapTypeObject, ht_type.tp_del),
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offsetof(PyHeapTypeObject, ht_type.tp_descr_get),
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offsetof(PyHeapTypeObject, ht_type.tp_descr_set),
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offsetof(PyHeapTypeObject, ht_type.tp_doc),
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offsetof(PyHeapTypeObject, ht_type.tp_getattr),
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offsetof(PyHeapTypeObject, ht_type.tp_getattro),
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offsetof(PyHeapTypeObject, ht_type.tp_hash),
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offsetof(PyHeapTypeObject, ht_type.tp_init),
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offsetof(PyHeapTypeObject, ht_type.tp_is_gc),
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offsetof(PyHeapTypeObject, ht_type.tp_iter),
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offsetof(PyHeapTypeObject, ht_type.tp_iternext),
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offsetof(PyHeapTypeObject, ht_type.tp_methods),
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offsetof(PyHeapTypeObject, ht_type.tp_new),
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offsetof(PyHeapTypeObject, ht_type.tp_repr),
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offsetof(PyHeapTypeObject, ht_type.tp_richcompare),
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offsetof(PyHeapTypeObject, ht_type.tp_setattr),
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offsetof(PyHeapTypeObject, ht_type.tp_setattro),
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offsetof(PyHeapTypeObject, ht_type.tp_str),
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offsetof(PyHeapTypeObject, ht_type.tp_traverse),
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offsetof(PyHeapTypeObject, ht_type.tp_members),
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offsetof(PyHeapTypeObject, ht_type.tp_getset),
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offsetof(PyHeapTypeObject, ht_type.tp_free),
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offsetof(PyHeapTypeObject, as_number.nb_matrix_multiply),
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offsetof(PyHeapTypeObject, as_number.nb_inplace_matrix_multiply),
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offsetof(PyHeapTypeObject, as_async.am_await),
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offsetof(PyHeapTypeObject, as_async.am_aiter),
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offsetof(PyHeapTypeObject, as_async.am_anext),
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offsetof(PyHeapTypeObject, ht_type.tp_finalize),
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offsetof(PyHeapTypeObject, as_async.am_send),
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{offsetof(PyBufferProcs, bf_getbuffer), offsetof(PyTypeObject, tp_as_buffer)},
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{offsetof(PyBufferProcs, bf_releasebuffer), offsetof(PyTypeObject, tp_as_buffer)},
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{offsetof(PyMappingMethods, mp_ass_subscript), offsetof(PyTypeObject, tp_as_mapping)},
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{offsetof(PyMappingMethods, mp_length), offsetof(PyTypeObject, tp_as_mapping)},
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{offsetof(PyMappingMethods, mp_subscript), offsetof(PyTypeObject, tp_as_mapping)},
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{offsetof(PyNumberMethods, nb_absolute), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_add), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_and), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_bool), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_divmod), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_float), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_floor_divide), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_index), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_add), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_and), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_floor_divide), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_lshift), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_multiply), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_or), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_power), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_remainder), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_rshift), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_subtract), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_true_divide), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_inplace_xor), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_int), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_invert), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_lshift), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_multiply), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_negative), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_or), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_positive), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_power), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_remainder), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_rshift), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_subtract), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_true_divide), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PyNumberMethods, nb_xor), offsetof(PyTypeObject, tp_as_number)},
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{offsetof(PySequenceMethods, sq_ass_item), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_concat), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_contains), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_inplace_concat), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_inplace_repeat), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_item), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_length), offsetof(PyTypeObject, tp_as_sequence)},
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{offsetof(PySequenceMethods, sq_repeat), offsetof(PyTypeObject, tp_as_sequence)},
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{-1, offsetof(PyTypeObject, tp_alloc)},
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{-1, offsetof(PyTypeObject, tp_base)},
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{-1, offsetof(PyTypeObject, tp_bases)},
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{-1, offsetof(PyTypeObject, tp_call)},
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{-1, offsetof(PyTypeObject, tp_clear)},
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{-1, offsetof(PyTypeObject, tp_dealloc)},
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{-1, offsetof(PyTypeObject, tp_del)},
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{-1, offsetof(PyTypeObject, tp_descr_get)},
|
||||
{-1, offsetof(PyTypeObject, tp_descr_set)},
|
||||
{-1, offsetof(PyTypeObject, tp_doc)},
|
||||
{-1, offsetof(PyTypeObject, tp_getattr)},
|
||||
{-1, offsetof(PyTypeObject, tp_getattro)},
|
||||
{-1, offsetof(PyTypeObject, tp_hash)},
|
||||
{-1, offsetof(PyTypeObject, tp_init)},
|
||||
{-1, offsetof(PyTypeObject, tp_is_gc)},
|
||||
{-1, offsetof(PyTypeObject, tp_iter)},
|
||||
{-1, offsetof(PyTypeObject, tp_iternext)},
|
||||
{-1, offsetof(PyTypeObject, tp_methods)},
|
||||
{-1, offsetof(PyTypeObject, tp_new)},
|
||||
{-1, offsetof(PyTypeObject, tp_repr)},
|
||||
{-1, offsetof(PyTypeObject, tp_richcompare)},
|
||||
{-1, offsetof(PyTypeObject, tp_setattr)},
|
||||
{-1, offsetof(PyTypeObject, tp_setattro)},
|
||||
{-1, offsetof(PyTypeObject, tp_str)},
|
||||
{-1, offsetof(PyTypeObject, tp_traverse)},
|
||||
{-1, offsetof(PyTypeObject, tp_members)},
|
||||
{-1, offsetof(PyTypeObject, tp_getset)},
|
||||
{-1, offsetof(PyTypeObject, tp_free)},
|
||||
{offsetof(PyNumberMethods, nb_matrix_multiply), offsetof(PyTypeObject, tp_as_number)},
|
||||
{offsetof(PyNumberMethods, nb_inplace_matrix_multiply), offsetof(PyTypeObject, tp_as_number)},
|
||||
{offsetof(PyAsyncMethods, am_await), offsetof(PyTypeObject, tp_as_async)},
|
||||
{offsetof(PyAsyncMethods, am_aiter), offsetof(PyTypeObject, tp_as_async)},
|
||||
{offsetof(PyAsyncMethods, am_anext), offsetof(PyTypeObject, tp_as_async)},
|
||||
{-1, offsetof(PyTypeObject, tp_finalize)},
|
||||
{offsetof(PyAsyncMethods, am_send), offsetof(PyTypeObject, tp_as_async)},
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
|
||||
import sys, re
|
||||
|
||||
|
||||
def generate_typeslots(out=sys.stdout):
|
||||
out.write("/* Generated by typeslots.py */\n")
|
||||
res = {}
|
||||
|
|
@ -10,27 +11,34 @@ def generate_typeslots(out=sys.stdout):
|
|||
m = re.match("#define Py_([a-z_]+) ([0-9]+)", line)
|
||||
if not m:
|
||||
continue
|
||||
|
||||
member = m.group(1)
|
||||
if member.startswith("tp_"):
|
||||
member = "ht_type."+member
|
||||
member = f'{{-1, offsetof(PyTypeObject, {member})}}'
|
||||
elif member.startswith("am_"):
|
||||
member = "as_async."+member
|
||||
member = (f'{{offsetof(PyAsyncMethods, {member}),'+
|
||||
' offsetof(PyTypeObject, tp_as_async)}')
|
||||
elif member.startswith("nb_"):
|
||||
member = "as_number."+member
|
||||
member = (f'{{offsetof(PyNumberMethods, {member}),'+
|
||||
' offsetof(PyTypeObject, tp_as_number)}')
|
||||
elif member.startswith("mp_"):
|
||||
member = "as_mapping."+member
|
||||
member = (f'{{offsetof(PyMappingMethods, {member}),'+
|
||||
' offsetof(PyTypeObject, tp_as_mapping)}')
|
||||
elif member.startswith("sq_"):
|
||||
member = "as_sequence."+member
|
||||
member = (f'{{offsetof(PySequenceMethods, {member}),'+
|
||||
' offsetof(PyTypeObject, tp_as_sequence)}')
|
||||
elif member.startswith("bf_"):
|
||||
member = "as_buffer."+member
|
||||
member = (f'{{offsetof(PyBufferProcs, {member}),'+
|
||||
' offsetof(PyTypeObject, tp_as_buffer)}')
|
||||
res[int(m.group(2))] = member
|
||||
|
||||
M = max(res.keys())+1
|
||||
for i in range(1,M):
|
||||
if i in res:
|
||||
out.write("offsetof(PyHeapTypeObject, %s),\n" % res[i])
|
||||
out.write("%s,\n" % res[i])
|
||||
else:
|
||||
out.write("0,\n")
|
||||
out.write("{0, 0},\n")
|
||||
|
||||
|
||||
def main():
|
||||
if len(sys.argv) == 2:
|
||||
|
|
|
|||
Loading…
Reference in New Issue