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bpo-41861: Convert sqlite3 to PEP 384 by erlend-aasland · Pull Request #22409 · python/cpython · GitHub

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bpo-41861: Convert sqlite3 to PEP 384 #22409

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bpo-41861: Convert sqlite3 to PEP 384 #22409

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9fc9c5e
Convert CacheType to heap type
Sep 8, 2020
00a62d9
Convert NodeType to heap type
Sep 8, 2020
49393c7
Convert StatementType to heap type
Sep 8, 2020
55ad447
Convert RowType to heap type
Sep 8, 2020
914082f
Convert PrepareProtocolType to heap type
Jun 6, 2020
502d2fb
Convert CursorType to head type
Sep 25, 2020
e6f935d
Convert ConnectionType to heap type
Sep 8, 2020
812fc4f
Add NEWS entry
Sep 25, 2020
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2020-09-25-14-34-08.bpo-41861.YTqJ7z.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Convert :mod:`sqlite3` to PEP 384.
128 changes: 37 additions & 91 deletions Modules/_sqlite/cache.c
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ pysqlite_Node* pysqlite_new_node(PyObject* key, PyObject* data)
{
pysqlite_Node* node;

node = (pysqlite_Node*) (pysqlite_NodeType.tp_alloc(&pysqlite_NodeType, 0));
node = (pysqlite_Node*) (pysqlite_NodeType->tp_alloc(pysqlite_NodeType, 0));
if (!node) {
return NULL;
}
Expand All @@ -52,6 +52,7 @@ void pysqlite_node_dealloc(pysqlite_Node* self)
Py_DECREF(self->data);

Py_TYPE(self)->tp_free((PyObject*)self);
Py_DECREF(pysqlite_NodeType);
}

int pysqlite_cache_init(pysqlite_Cache* self, PyObject* args, PyObject* kwargs)
Expand Down Expand Up @@ -110,6 +111,7 @@ void pysqlite_cache_dealloc(pysqlite_Cache* self)
Py_DECREF(self->mapping);

Py_TYPE(self)->tp_free((PyObject*)self);
Py_DECREF(pysqlite_CacheType);
}

PyObject* pysqlite_cache_get(pysqlite_Cache* self, PyObject* key)
Expand Down Expand Up @@ -253,6 +255,20 @@ PyObject* pysqlite_cache_display(pysqlite_Cache* self, PyObject* args)
Py_RETURN_NONE;
}

static PyType_Slot pysqlite_NodeType_slots[] = {
{Py_tp_dealloc, pysqlite_node_dealloc},
{Py_tp_new, PyType_GenericNew},
{0, NULL},
};

PyType_Spec pysqlite_NodeType_spec = {
.name = MODULE_NAME ".Node",
.basicsize = sizeof(pysqlite_Node),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE,
.slots = pysqlite_NodeType_slots,
};
PyTypeObject *pysqlite_NodeType = NULL;

static PyMethodDef cache_methods[] = {
{"get", (PyCFunction)pysqlite_cache_get, METH_O,
PyDoc_STR("Gets an entry from the cache or calls the factory function to produce one.")},
Expand All @@ -261,102 +277,32 @@ static PyMethodDef cache_methods[] = {
{NULL, NULL}
};

PyTypeObject pysqlite_NodeType = {
PyVarObject_HEAD_INIT(NULL, 0)
MODULE_NAME "Node", /* tp_name */
sizeof(pysqlite_Node), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)pysqlite_node_dealloc, /* 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 */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */
0, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* 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 */
(initproc)0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0 /* tp_free */
static PyType_Slot pysqlite_CacheType_slots[] = {
{Py_tp_dealloc, pysqlite_cache_dealloc},
{Py_tp_methods, cache_methods},
{Py_tp_new, PyType_GenericNew},
{Py_tp_init, pysqlite_cache_init},
{0, NULL},
};

PyTypeObject pysqlite_CacheType = {
PyVarObject_HEAD_INIT(NULL, 0)
MODULE_NAME ".Cache", /* tp_name */
sizeof(pysqlite_Cache), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)pysqlite_cache_dealloc, /* 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 */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */
0, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
cache_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 */
(initproc)pysqlite_cache_init, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0 /* tp_free */
static PyType_Spec pysqlite_CacheType_spec = {
.name = MODULE_NAME ".Cache",
.basicsize = sizeof(pysqlite_Cache),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE,
.slots = pysqlite_CacheType_slots,
};
PyTypeObject *pysqlite_CacheType = NULL;

extern int pysqlite_cache_setup_types(void)
{
int rc;

pysqlite_NodeType.tp_new = PyType_GenericNew;
pysqlite_CacheType.tp_new = PyType_GenericNew;

rc = PyType_Ready(&pysqlite_NodeType);
if (rc < 0) {
return rc;
pysqlite_NodeType = (PyTypeObject *)PyType_FromSpec(&pysqlite_NodeType_spec);
if (pysqlite_NodeType == NULL) {
return -1;
}

rc = PyType_Ready(&pysqlite_CacheType);
return rc;
pysqlite_CacheType = (PyTypeObject *)PyType_FromSpec(&pysqlite_CacheType_spec);
if (pysqlite_CacheType == NULL) {
return -1;
}
return 0;
}
4 changes: 2 additions & 2 deletions Modules/_sqlite/cache.h
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Expand Up @@ -59,8 +59,8 @@ typedef struct
int decref_factory;
} pysqlite_Cache;

extern PyTypeObject pysqlite_NodeType;
extern PyTypeObject pysqlite_CacheType;
extern PyTypeObject *pysqlite_NodeType;
extern PyTypeObject *pysqlite_CacheType;

int pysqlite_node_init(pysqlite_Node* self, PyObject* args, PyObject* kwargs);
void pysqlite_node_dealloc(pysqlite_Node* self);
Expand Down
76 changes: 29 additions & 47 deletions Modules/_sqlite/connection.c
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Expand Up @@ -133,7 +133,7 @@ int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject
}
Py_DECREF(isolation_level);

self->statement_cache = (pysqlite_Cache*)PyObject_CallFunction((PyObject*)&pysqlite_CacheType, "Oi", self, cached_statements);
self->statement_cache = (pysqlite_Cache*)PyObject_CallFunction((PyObject*)pysqlite_CacheType, "Oi", self, cached_statements);
if (PyErr_Occurred()) {
return -1;
}
Expand Down Expand Up @@ -237,6 +237,7 @@ void pysqlite_connection_dealloc(pysqlite_Connection* self)
Py_XDECREF(self->statements);
Py_XDECREF(self->cursors);
Py_TYPE(self)->tp_free((PyObject*)self);
//Py_DECREF(pysqlite_ConnectionType); FIXME
}

/*
Expand Down Expand Up @@ -281,13 +282,13 @@ PyObject* pysqlite_connection_cursor(pysqlite_Connection* self, PyObject* args,
}

if (factory == NULL) {
factory = (PyObject*)&pysqlite_CursorType;
factory = (PyObject*)pysqlite_CursorType;
}

cursor = PyObject_CallOneArg(factory, (PyObject *)self);
if (cursor == NULL)
return NULL;
if (!PyObject_TypeCheck(cursor, &pysqlite_CursorType)) {
if (!PyObject_TypeCheck(cursor, pysqlite_CursorType)) {
PyErr_Format(PyExc_TypeError,
"factory must return a cursor, not %.100s",
Py_TYPE(cursor)->tp_name);
Expand Down Expand Up @@ -1234,7 +1235,7 @@ PyObject* pysqlite_connection_call(pysqlite_Connection* self, PyObject* args, Py

_pysqlite_drop_unused_statement_references(self);

statement = PyObject_New(pysqlite_Statement, &pysqlite_StatementType);
statement = PyObject_New(pysqlite_Statement, pysqlite_StatementType);
if (!statement) {
return NULL;
}
Expand Down Expand Up @@ -1494,7 +1495,7 @@ pysqlite_connection_backup(pysqlite_Connection *self, PyObject *args, PyObject *
static char *keywords[] = {"target", "pages", "progress", "name", "sleep", NULL};

if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!|$iOsO:backup", keywords,
&pysqlite_ConnectionType, &target,
pysqlite_ConnectionType, &target,
&pages, &progress, &name, &sleep_obj)) {
return NULL;
}
Expand Down Expand Up @@ -1831,50 +1832,31 @@ static struct PyMemberDef connection_members[] =
{NULL}
};

PyTypeObject pysqlite_ConnectionType = {
PyVarObject_HEAD_INIT(NULL, 0)
MODULE_NAME ".Connection", /* tp_name */
sizeof(pysqlite_Connection), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)pysqlite_connection_dealloc, /* 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 */
(ternaryfunc)pysqlite_connection_call, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */
connection_doc, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
connection_methods, /* tp_methods */
connection_members, /* tp_members */
connection_getset, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)pysqlite_connection_init, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
0 /* tp_free */
static PyType_Slot pysqlite_ConnectionType_slots[] = {
{Py_tp_dealloc, pysqlite_connection_dealloc},
{Py_tp_doc, (void *)connection_doc},
{Py_tp_methods, connection_methods},
{Py_tp_members, connection_members},
{Py_tp_getset, connection_getset},
{Py_tp_new, PyType_GenericNew},
{Py_tp_init, pysqlite_connection_init},
{Py_tp_call, pysqlite_connection_call},
{0, NULL},
};

static PyType_Spec pysqlite_ConnectionType_spec = {
.name = MODULE_NAME ".Connection",
.basicsize = sizeof(pysqlite_Connection),
.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HEAPTYPE,
.slots = pysqlite_ConnectionType_slots,
};
PyTypeObject *pysqlite_ConnectionType = NULL;

extern int pysqlite_connection_setup_types(void)
{
pysqlite_ConnectionType.tp_new = PyType_GenericNew;
return PyType_Ready(&pysqlite_ConnectionType);
pysqlite_ConnectionType = (PyTypeObject *)PyType_FromSpec(&pysqlite_ConnectionType_spec);
if (pysqlite_ConnectionType == NULL) {
return -1;
}
return 0;
}
2 changes: 1 addition & 1 deletion Modules/_sqlite/connection.h
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Expand Up @@ -106,7 +106,7 @@ typedef struct
PyObject* NotSupportedError;
} pysqlite_Connection;

extern PyTypeObject pysqlite_ConnectionType;
extern PyTypeObject *pysqlite_ConnectionType;

PyObject* pysqlite_connection_alloc(PyTypeObject* type, int aware);
void pysqlite_connection_dealloc(pysqlite_Connection* self);
Expand Down
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