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bpo-1635741: convert unicode ucd type to heap type #22490

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bpo-1635741: convert unicode ucd type to heap type #22490

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6c4ece6
convert unicode ucd type to heap type
koubaa Oct 2, 2020
d612585
respond to PR comment
koubaa Oct 10, 2020
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132 changes: 67 additions & 65 deletions 132 Modules/unicodedata.c
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Original file line number Diff line number Diff line change
Expand Up @@ -91,12 +91,9 @@ static PyMemberDef DB_members[] = {
};

/* forward declaration */
static PyTypeObject UCD_Type;

typedef struct {
// Borrowed reference to &UCD_Type. It is used to prepare the code
// to convert the UCD_Type static type to a heap type.
PyTypeObject *ucd_type;

} unicodedata_module_state;

// bpo-1635741: Temporary global state until the unicodedata module
Expand All @@ -114,8 +111,9 @@ new_previous_version(unicodedata_module_state *state,
{
PreviousDBVersion *self;
self = PyObject_New(PreviousDBVersion, state->ucd_type);
if (self == NULL)
if (self == NULL) {
return NULL;
}
self->name = name;
self->getrecord = getrecord;
self->normalization = normalization;
Expand Down Expand Up @@ -1437,50 +1435,27 @@ static PyMethodDef unicodedata_functions[] = {
{NULL, NULL} /* sentinel */
};

static PyTypeObject UCD_Type = {
/* The ob_type field must be initialized in the module init function
* to be portable to Windows without using C++. */
PyVarObject_HEAD_INIT(NULL, 0)
"unicodedata.UCD", /*tp_name*/
sizeof(PreviousDBVersion), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)PyObject_Del, /*tp_dealloc*/
0, /*tp_vectorcall_offset*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_as_async*/
0, /*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*/
unicodedata_functions, /*tp_methods*/
DB_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*/
0, /*tp_new*/
0, /*tp_free*/
0, /*tp_is_gc*/
static void
ucd_dealloc(PreviousDBVersion *self)
{
PyTypeObject *tp = Py_TYPE(self);
PyObject_Del(self);
Py_DECREF(tp);
}

static PyType_Slot unicodedata_ucd_type_slots[] = {
{Py_tp_dealloc, ucd_dealloc},
{Py_tp_getattro, PyObject_GenericGetAttr},
{Py_tp_methods, unicodedata_functions},
{Py_tp_members, DB_members},
{0, 0}
};

static PyType_Spec unicodedata_ucd_type_spec = {
.name = "unicodedata.UCD",
.basicsize = sizeof(PreviousDBVersion),
.flags = Py_TPFLAGS_DEFAULT,
.slots = unicodedata_ucd_type_slots
};

PyDoc_STRVAR(unicodedata_docstring,
Expand All @@ -1507,31 +1482,58 @@ static struct PyModuleDef unicodedatamodule = {
PyMODINIT_FUNC
PyInit_unicodedata(void)
{
PyObject *m, *v;
PyObject *mod = PyModule_Create(&unicodedatamodule);
if (!mod) {
return NULL;
}

unicodedata_module_state *state = &global_module_state;

Py_SET_TYPE(&UCD_Type, &PyType_Type);
state->ucd_type = &UCD_Type;
if (state->ucd_type == NULL) {
state->ucd_type = (PyTypeObject *)PyType_FromSpec(
&unicodedata_ucd_type_spec);
if (state->ucd_type == NULL) {
goto error;
}
}

m = PyModule_Create(&unicodedatamodule);
if (!m)
return NULL;
PyModule_AddObject(mod, "UCD", (PyObject*)state->ucd_type);

if (PyModule_AddStringConstant(
mod, "unidata_version", UNIDATA_VERSION) < 0) {
goto error;
}

PyModule_AddStringConstant(m, "unidata_version", UNIDATA_VERSION);
Py_INCREF(state->ucd_type);
PyModule_AddObject(m, "UCD", (PyObject*)state->ucd_type);
if (PyModule_AddType(mod, state->ucd_type) < 0) {
goto error;
}

/* Previous versions */
v = new_previous_version(state, "3.2.0",
get_change_3_2_0, normalization_3_2_0);
if (v != NULL)
PyModule_AddObject(m, "ucd_3_2_0", v);
PyObject *v;
v = new_previous_version(state, "3.2.0", get_change_3_2_0, normalization_3_2_0);
if (v == NULL) {
goto error;
}

if (PyModule_AddObject(mod, "ucd_3_2_0", v) < 0) {
Py_DECREF(v);
goto error;
}

/* Export C API */
v = PyCapsule_New((void *)&hashAPI, PyUnicodeData_CAPSULE_NAME, NULL);
if (v != NULL)
PyModule_AddObject(m, "ucnhash_CAPI", v);
return m;
if (v == NULL) {
goto error;
}
if (PyModule_AddObject(mod, "ucnhash_CAPI", v) < 0) {
Py_DECREF(v);
goto error;
}
return mod;

error:
Py_DECREF(mod);
return NULL;
}

/*
Expand Down
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