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gh-90763: Modernise xx template module initialisation (#93078)

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Use C APIs such as PyModule_AddType instead of PyModule_AddObject.
Also remove incorrect module decrefs if module fails to initialise.
This commit is contained in:
Erlend Egeberg Aasland 2022-06-10 12:39:02 +02:00 committed by GitHub
parent d8395eb38d
commit a87c9b538f
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 52 additions and 41 deletions
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58
Modules/xxlimited_35.c
View file

@ -124,7 +124,7 @@ static PyType_Slot Xxo_Type_slots[] = {
};
static PyType_Spec Xxo_Type_spec = {
"xxlimited.Xxo",
"xxlimited_35.Xxo",
sizeof(XxoObject),
0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
@ -189,7 +189,7 @@ static PyType_Slot Str_Type_slots[] = {
};
static PyType_Spec Str_Type_spec = {
"xxlimited.Str",
"xxlimited_35.Str",
0,
0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
@ -212,7 +212,7 @@ static PyType_Slot Null_Type_slots[] = {
};
static PyType_Spec Null_Type_spec = {
"xxlimited.Null",
"xxlimited_35.Null",
0, /* basicsize */
0, /* itemsize */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
@ -248,40 +248,50 @@ xx_modexec(PyObject *m)
Null_Type_slots[1].pfunc = PyType_GenericNew;
Str_Type_slots[0].pfunc = &PyUnicode_Type;
Xxo_Type = PyType_FromSpec(&Xxo_Type_spec);
if (Xxo_Type == NULL)
goto fail;
/* Add some symbolic constants to the module */
if (ErrorObject == NULL) {
ErrorObject = PyErr_NewException("xxlimited.error", NULL, NULL);
if (ErrorObject == NULL)
goto fail;
ErrorObject = PyErr_NewException("xxlimited_35.error", NULL, NULL);
if (ErrorObject == NULL) {
return -1;
}
}
Py_INCREF(ErrorObject);
PyModule_AddObject(m, "error", ErrorObject);
if (PyModule_AddObject(m, "error", ErrorObject) < 0) {
Py_DECREF(ErrorObject);
return -1;
}
/* Add Xxo */
o = PyType_FromSpec(&Xxo_Type_spec);
if (o == NULL)
goto fail;
PyModule_AddObject(m, "Xxo", o);
Xxo_Type = PyType_FromSpec(&Xxo_Type_spec);
if (Xxo_Type == NULL) {
return -1;
}
if (PyModule_AddObject(m, "Xxo", Xxo_Type) < 0) {
Py_DECREF(Xxo_Type);
return -1;
}
/* Add Str */
o = PyType_FromSpec(&Str_Type_spec);
if (o == NULL)
goto fail;
PyModule_AddObject(m, "Str", o);
if (o == NULL) {
return -1;
}
if (PyModule_AddObject(m, "Str", o) < 0) {
Py_DECREF(o);
return -1;
}
/* Add Null */
o = PyType_FromSpec(&Null_Type_spec);
if (o == NULL)
goto fail;
PyModule_AddObject(m, "Null", o);
if (o == NULL) {
return -1;
}
if (PyModule_AddObject(m, "Null", o) < 0) {
Py_DECREF(o);
return -1;
}
return 0;
fail:
Py_XDECREF(m);
return -1;
}

35
Modules/xxmodule.c
View file

@ -358,31 +358,32 @@ xx_exec(PyObject *m)
/* Finalize the type object including setting type of the new type
* object; doing it here is required for portability, too. */
if (PyType_Ready(&Xxo_Type) < 0)
goto fail;
if (PyType_Ready(&Xxo_Type) < 0) {
return -1;
}
/* Add some symbolic constants to the module */
if (ErrorObject == NULL) {
ErrorObject = PyErr_NewException("xx.error", NULL, NULL);
if (ErrorObject == NULL)
goto fail;
if (ErrorObject == NULL) {
return -1;
}
}
int rc = PyModule_AddType(m, (PyTypeObject *)ErrorObject);
Py_DECREF(ErrorObject);
if (rc < 0) {
return -1;
}
Py_INCREF(ErrorObject);
PyModule_AddObject(m, "error", ErrorObject);
/* Add Str */
if (PyType_Ready(&Str_Type) < 0)
goto fail;
PyModule_AddObject(m, "Str", (PyObject *)&Str_Type);
/* Add Str and Null types */
if (PyModule_AddType(m, &Str_Type) < 0) {
return -1;
}
if (PyModule_AddType(m, &Null_Type) < 0) {
return -1;
}
/* Add Null */
if (PyType_Ready(&Null_Type) < 0)
goto fail;
PyModule_AddObject(m, "Null", (PyObject *)&Null_Type);
return 0;
fail:
Py_XDECREF(m);
return -1;
}
static struct PyModuleDef_Slot xx_slots[] = {