8000 gh-92123: Convert `_elementtree` types to heap types by erlend-aasland · Pull Request #99221 · python/cpython · GitHub
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Merged
merged 22 commits into from
Jan 20, 2023
Merged

gh-92123: Convert _elementtree types to heap types #99221

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76641a3
Prepare init function
Nov 20, 2020
5cbbe16
Convert element type to heap type
Nov 20, 2020
116fa39
Convert element iter type to heap type
Nov 20, 2020
a792fcf
Convert tree builder type to heap type
Nov 20, 2020
341a92d
Convert xml parser type to heap type
Nov 20, 2020
f35c604
Update clinic
Nov 20, 2020
b6573b1
Add NEWS
Nov 20, 2020
404b398
Use PyModule_AddObjectRef
Nov 20, 2020
6e53e92
Create module before creating types
Nov 20, 2020
525cfaf
Fetch type before GC
Nov 21, 2020
2448e93
Add initialisation guard
Nov 21, 2020
959a225
Address Heime's review: Don't define globals twice
Nov 23, 2020
9210a36
Visit type in type traverse functions
Jan 11, 2021
a6c6fea
Fix NEWS formatting
Jan 11, 2021
e039922
Sync with main
erlend-aasland Nov 7, 2022
b02b18e
Sync with main
erlend-aasland Jan 12, 2023
744be65
Merge branch 'main' into isolate-elementtree
erlend-aasland Jan 18, 2023
c8a3c67
Address review: make types immutable
erlend-aasland Jan 18, 2023
2175f66
Disallow instantiation for the iter type
erlend-aasland Jan 19, 2023
04aaa3d
Merge branch 'main' into isolate-elementtree
erlend-aasland Jan 19, 2023
730e5d2
Address review: fix error handling in module init
erlend-aasland Jan 19, 2023
2ccabd0
Merge branch 'main' into isolate-elementtree
erlend-aasland Jan 20, 2023
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Convert element type to heap type
  • Loading branch information
Erlend E. Aasland committed Jan 11, 2021
commit 5cbbe163395ac0e0e95e7165831bd175df47c236
120 changes: 49 additions & 71 deletions Modules/_elementtree.c
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ static void _clear_joined_ptr(PyObject **p)
}

/* Types defined by this extension */
static PyTypeObject Element_Type;
static PyTypeObject *Element_Type;
static PyTypeObject ElementIter_Type;
static PyTypeObject TreeBuilder_Type;
static PyTypeObject XMLParser_Type;
Expand Down Expand Up @@ -215,8 +215,8 @@ typedef struct {
} ElementObject;


#define Element_CheckExact(op) Py_IS_TYPE(op, &Element_Type)
#define Element_Check(op) PyObject_TypeCheck(op, &Element_Type)
#define Element_CheckExact(op) Py_IS_TYPE(op, Element_Type)
#define Element_Check(op) PyObject_TypeCheck(op, Element_Type)


/* -------------------------------------------------------------------- */
Expand Down Expand Up @@ -284,7 +284,7 @@ create_new_element(PyObject* tag, PyObject* attrib)
{
ElementObject* self;

self = PyObject_GC_New(ElementObject, &Element_Type);
self = PyObject_GC_New(ElementObject, Element_Type);
if (self == NULL)
return NULL;
self->extra = NULL;
Expand Down Expand Up @@ -381,11 +381,11 @@ get_attrib_from_keywords(PyObject *kwds)

/*[clinic input]
module _elementtree
class _elementtree.Element "ElementObject *" "&Element_Type"
class _elementtree.Element "ElementObject *" "Element_Type"
class _elementtree.TreeBuilder "TreeBuilderObject *" "&TreeBuilder_Type"
class _elementtree.XMLParser "XMLParserObject *" "&XMLParser_Type"
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=159aa50a54061c22]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=f56d497fee3f9c95]*/

static int
element_init(PyObject *self, PyObject *args, PyObject *kwds)
Expand Down Expand Up @@ -594,7 +594,7 @@ subelement(PyObject *self, PyObject *args, PyObject *kwds)
PyObject* tag;
PyObject* attrib = NULL;
if (!PyArg_ParseTuple(args, "O!O|O!:SubElement",
&Element_Type, &parent, &tag,
Element_Type, &parent, &tag,
&PyDict_Type, &attrib)) {
return NULL;
}
Expand Down Expand Up @@ -676,7 +676,9 @@ element_dealloc(ElementObject* self)
element_gc_clear(self);

RELEASE(sizeof(ElementObject), "destroy element");
Py_TYPE(self)->tp_free((PyObject *)self);
PyTypeObject *tp = Py_TYPE(self);
tp->tp_free(self);
Py_DECREF(tp);
Py_TRASHCAN_END
}

Expand All @@ -685,14 +687,14 @@ element_dealloc(ElementObject* self)
/*[clinic input]
_elementtree.Element.append

subelement: object(subclass_of='&Element_Type')
subelement: object(subclass_of='Element_Type')
/

[clinic start generated code]*/

static PyObject *
_elementtree_Element_append_impl(ElementObject *self, PyObject *subelement)
/*[c 10000 linic end generated code: output=54a884b7cf2295f4 input=3ed648beb5bfa22a]*/
/*[clinic end generated code: output=54a884b7cf2295f4 input=59866b732e6e2891]*/
{
if (element_add_subelement(self, subelement) < 0)
return NULL;
Expand Down Expand Up @@ -1475,15 +1477,15 @@ element_getitem(PyObject* self_, Py_ssize_t index)
_elementtree.Element.insert

index: Py_ssize_t
subelement: object(subclass_of='&Element_Type')
subelement: object(subclass_of='Element_Type')
/

[clinic start generated code]*/

static PyObject *
_elementtree_Element_insert_impl(ElementObject *self, Py_ssize_t index,
PyObject *subelement)
/*[clinic end generated code: output=990adfef4d424c0b input=cd6fbfcdab52d7a8]*/
/*[clinic end generated code: output=990adfef4d424c0b input=4382c42ab2659f9b]*/
{
Py_ssize_t i;

Expand Down Expand Up @@ -1583,14 +1585,14 @@ _elementtree_Element_makeelement_impl(ElementObject *self, PyObject *tag,
/*[clinic input]
_elementtree.Element.remove

subelement: object(subclass_of='&Element_Type')
subelement: object(subclass_of='Element_Type')
/

[clinic start generated code]*/

static PyObject *
_elementtree_Element_remove_impl(ElementObject *self, PyObject *subelement)
/*[clinic end generated code: output=38fe6c07d6d87d1f input=d52fc28ededc0bd8]*/
/*[clinic end generated code: output=38fe6c07d6d87d1f input=cbdf9f2ab34d93b0]*/
{
Py_ssize_t i;
int rc;
Expand Down Expand Up @@ -2052,16 +2054,6 @@ element_attrib_setter(ElementObject *self, PyObject *value, void *closure)
return 0;
}

static PySequenceMethods element_as_sequence = {
(lenfunc) element_length,
0, /* sq_concat */
0, /* sq_repeat */
element_getitem,
0,
element_setitem,
0,
};

/******************************* Element iterator ****************************/

/* ElementIterObject represents the iteration state over an XML element in
Expand Down Expand Up @@ -4190,10 +4182,9 @@ static PyMethodDef element_methods[] = {
{NULL, NULL}
};

static PyMappingMethods element_as_mapping = {
(lenfunc) element_length,
(binaryfunc) element_subscr,
(objobjargproc) element_ass_subscr,
static struct PyMemberDef element_members[] = {
{"__weaklistoffset__", T_PYSSIZET, offsetof(ElementObject, weakreflist), READONLY},
{NULL},
};

static PyGetSetDef element_getsetlist[] = {
Expand All @@ -4216,48 +4207,36 @@ static PyGetSetDef element_getsetlist[] = {
{NULL},
};

static PyTypeObject Element_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"xml.etree.ElementTree.Element", sizeof(ElementObject), 0,
/* methods */
(destructor)element_dealloc, /* tp_dealloc */
0, /* tp_vectorcall_offset */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_as_async */
(reprfunc)element_repr, /* tp_repr */
0, /* tp_as_number */
&element_as_sequence, /* tp_as_sequence */
&element_as_mapping, /* 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 | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
/* tp_flags */
0, /* tp_doc */
(traverseproc)element_gc_traverse, /* tp_traverse */
(inquiry)element_gc_clear, /* tp_clear */
0, /* tp_richcompare */
offsetof(ElementObject, weakreflist), /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
element_methods, /* tp_methods */
0, /* tp_members */
element_getsetlist, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)element_init, /* tp_init */
PyType_GenericAlloc, /* tp_alloc */
element_new, /* tp_new */
0, /* tp_free */
static PyType_Slot element_slots[] = {
{Py_tp_dealloc, element_dealloc},
{Py_tp_repr, element_repr},
{Py_tp_getattro, PyObject_GenericGetAttr},
{Py_tp_traverse, element_gc_traverse},
{Py_tp_clear, element_gc_clear},
{Py_tp_methods, element_methods},
{Py_tp_members, element_members},
{Py_tp_getset, element_getsetlist},
{Py_tp_init, element_init},
{Py_tp_alloc, PyType_GenericAlloc},
{Py_tp_new, element_new},
{Py_sq_length, element_length},
{Py_sq_item, element_getitem},
{Py_sq_ass_item, element_setitem},
{Py_mp_length, element_length},
{Py_mp_subscript, element_subscr},
{Py_mp_ass_subscript, element_ass_subscr},
{0, NULL},
};

static PyType_Spec element_spec = {
.name = "xml.etree.ElementTree.Element",
.basicsize = sizeof(ElementObject),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
.slots = element_slots,
};

static PyTypeObject *Element_Type = NULL;

static PyMethodDef treebuilder_methods[] = {
_ELEMENTTREE_TREEBUILDER_DATA_METHODDEF
_ELEMENTTREE_TREEBUILDER_START_METHODDEF
Expand Down Expand Up @@ -4407,8 +4386,7 @@ PyInit__elementtree(void)
goto error;
if (PyType_Ready(&TreeBuilder_Type) < 0)
goto error;
if (PyType_Ready(&Element_Type) < 0)
goto error;
CREATE_TYPE(m, Element_Type, &element_spec);
if (PyType_Ready(&XMLParser_Type) < 0)
goto error;

Expand Down Expand Up @@ -4456,7 +4434,7 @@ PyInit__elementtree(void)
}

PyTypeObject *types[] = {
&Element_Type,
Element_Type,
&TreeBuilder_Type,
&XMLParser_Type
};
Expand Down
14 changes: 7 additions & 7 deletions Modules/clinic/_elementtree.c.h
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