Convert sqlite3.connect() and Connection.__init__()

erlend-aasland · Jun 13, 2020 · Jun 13, 2020 · Jun 13, 2020 · Jun 13, 2020 · Jun 13, 2020
commit 144d84ad63b286bb56396beadc9fe528f20eec88
diff --git a/Modules/_sqlite/clinic/connection.c.h b/Modules/_sqlite/clinic/connection.c.h
@@ -2,6 +2,107 @@
 preserve
 [clinic start generated code]*/
 
+static int
+pysqlite_connection_init_impl(pysqlite_Connection *self,
+                              PyObject *database_obj, double timeout,
+                              int detect_types, PyObject *isolation_level,
+                              int check_same_thread, PyObject *factory,
+                              int cached_statements, int uri);
+
+static int
+pysqlite_connection_init(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    int return_value = -1;
+    static const char * const _keywords[] = {"database", "timeout", "detect_types", "isolation_level", "check_same_thread", "factory", "cached_statements", "uri", NULL};
+    static _PyArg_Parser _parser = {NULL, _keywords, "Connection", 0};
+    PyObject *argsbuf[8];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
+    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
+    PyObject *database_obj;
+    double timeout = 5.0;
+    int detect_types = 0;
+    PyObject *isolation_level = NULL;
+    int check_same_thread = 1;
+    PyObject *factory = (PyObject*)&pysqlite_ConnectionType;
+    int cached_statements = 100;
+    int uri = 0;
+
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 1, 8, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    if (!PyUnicode_FSConverter(fastargs[0], &database_obj)) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (fastargs[1]) {
+        if (PyFloat_CheckExact(fastargs[1])) {
+            timeout = PyFloat_AS_DOUBLE(fastargs[1]);
+        }
+        else
+        {
+            timeout = PyFloat_AsDouble(fastargs[1]);
+            if (timeout == -1.0 && PyErr_Occurred()) {
+                goto exit;
+            }
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (fastargs[2]) {
+        detect_types = _PyLong_AsInt(fastargs[2]);
+        if (detect_types == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (fastargs[3]) {
+        isolation_level = fastargs[3];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (fastargs[4]) {
+        check_same_thread = _PyLong_AsInt(fastargs[4]);
+        if (check_same_thread == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (fastargs[5]) {
+        factory = fastargs[5];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (fastargs[6]) {
+        cached_statements = _PyLong_AsInt(fastargs[6]);
+        if (cached_statements == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    uri = PyObject_IsTrue(fastargs[7]);
+    if (uri < 0) {
+        goto exit;
+    }
+skip_optional_pos:
+    return_value = pysqlite_connection_init_impl((pysqlite_Connection *)self, database_obj, timeout, detect_types, isolation_level, check_same_thread, factory, cached_statements, uri);
+
+exit:
+    return return_value;
+}
+
 PyDoc_STRVAR(pysqlite_connection_cursor__doc__,
 "cursor($self, /, factory=<unrepresentable>)\n"
 "--\n"
@@ -682,4 +783,4 @@ pysqlite_connection_exit(pysqlite_Connection *self, PyObject *const *args, Py_ss
 #ifndef PYSQLITE_CONNECTION_BACKUP_METHODDEF
     #define PYSQLITE_CONNECTION_BACKUP_METHODDEF
 #endif /* !defined(PYSQLITE_CONNECTION_BACKUP_METHODDEF) */
-/*[clinic end generated code: output=2f69688f7e0cf5b3 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=d1fb1f48710a3cd4 input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/clinic/module.c.h b/Modules/_sqlite/clinic/module.c.h
@@ -2,6 +2,118 @@
 preserve
 [clinic start generated code]*/
 
+PyDoc_STRVAR(pysqlite_connect__doc__,
+"connect($module, /, database, timeout=5.0, detect_types=0,\n"
+"        isolation_level=<unrepresentable>, check_same_thread=1,\n"
+"        factory=ConnectionType, cached_statements=100, uri=False)\n"
+"--\n"
+"\n"
+"Opens a connection to the SQLite database file database.\n"
+"\n"
+"You can use \":memory:\" to open a database connection to a database that resides\n"
+"in RAM instead of on disk.");
+
+#define PYSQLITE_CONNECT_METHODDEF    \
+    {"connect", (PyCFunction)(void(*)(void))pysqlite_connect, METH_FASTCALL|METH_KEYWORDS, pysqlite_connect__doc__},
+
+static PyObject *
+pysqlite_connect_impl(PyObject *module, PyObject *database, double timeout,
+                      int detect_types, PyObject *isolation_level,
+                      int check_same_thread, PyObject *factory,
+                      int cached_statements, int uri);
+
+static PyObject *
+pysqlite_connect(PyObject *module, PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames)
+{
+    PyObject *return_value = NULL;
+    static const char * const _keywords[] = {"database", "timeout", "detect_types", "isolation_level", "check_same_thread", "factory", "cached_statements", "uri", NULL};
+    static _PyArg_Parser _parser = {NULL, _keywords, "connect", 0};
+    PyObject *argsbuf[8];
+    Py_ssize_t noptargs = nargs + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - 1;
+    PyObject *database;
+    double timeout = 5.0;
+    int detect_types = 0;
+    PyObject *isolation_level = NULL;
+    int check_same_thread = 1;
+    PyObject *factory = (PyObject*)&pysqlite_ConnectionType;
+    int cached_statements = 100;
+    int uri = 0;
+
+    args = _PyArg_UnpackKeywords(args, nargs, NULL, kwnames, &_parser, 1, 8, 0, argsbuf);
+    if (!args) {
+        goto exit;
+    }
+    if (!PyUnicode_FSConverter(args[0], &database)) {
+        goto exit;
+    }
+    if (!noptargs) {
+        goto skip_optional_pos;
+    }
+    if (args[1]) {
+        if (PyFloat_CheckExact(args[1])) {
+            timeout = PyFloat_AS_DOUBLE(args[1]);
+        }
+        else
+        {
+            timeout = PyFloat_AsDouble(args[1]);
+            if (timeout == -1.0 && PyErr_Occurred()) {
+                goto exit;
+            }
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[2]) {
+        detect_types = _PyLong_AsInt(args[2]);
+        if (detect_types == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[3]) {
+        isolation_level = args[3];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[4]) {
+        check_same_thread = _PyLong_AsInt(args[4]);
+        if (check_same_thread == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[5]) {
+        factory = args[5];
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    if (args[6]) {
+        cached_statements = _PyLong_AsInt(args[6]);
+        if (cached_statements == -1 && PyErr_Occurred()) {
+            goto exit;
+        }
+        if (!--noptargs) {
+            goto skip_optional_pos;
+        }
+    }
+    uri = PyObject_IsTrue(args[7]);
+    if (uri < 0) {
+        goto exit;
+    }
+skip_optional_pos:
+    return_value = pysqlite_connect_impl(module, database, timeout, detect_types, isolation_level, check_same_thread, factory, cached_statements, uri);
+
+exit:
+    return return_value;
+}
+
 PyDoc_STRVAR(pysqlite_complete_statement__doc__,
 "complete_statement($module, statement, /)\n"
 "--\n"
@@ -213,4 +325,4 @@ pysqlite_adapt(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
 #ifndef PYSQLITE_ENABLE_SHARED_CACHE_METHODDEF
     #define PYSQLITE_ENABLE_SHARED_CACHE_METHODDEF
 #endif /* !defined(PYSQLITE_ENABLE_SHARED_CACHE_METHODDEF) */
-/*[clinic end generated code: output=2f740fe39ac0ec71 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5e0bb0b26046264e input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
@@ -58,33 +58,30 @@ static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, Py
 static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
 
 
-int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
-{
-    static char *kwlist[] = {
-        "database", "timeout", "detect_types", "isolation_level",
-        "check_same_thread", "factory", "cached_statements", "uri",
-        NULL
-    };
+/*[clinic input]
+_sqlite3.Connection.__init__ as pysqlite_connection_init
+
+    database as database_obj: object(converter='PyUnicode_FSConverter')
+    timeout: double = 5.0
+    detect_types: int = 0
+    isolation_level: object = NULL
+    check_same_thread: int = 1
+    factory: object(c_default='(PyObject*)&pysqlite_ConnectionType') = ConnectionType
+    cached_statements: int = 100
+    uri: bool = False
+[clinic start generated code]*/
 
+static int
+pysqlite_connection_init_impl(pysqlite_Connection *self,
+                              PyObject *database_obj, double timeout,
+                              int detect_types, PyObject *isolation_level,
+                              int check_same_thread, PyObject *factory,
+                              int cached_statements, int uri)
+/*[clinic end generated code: output=dc19df1c0e2b7b77 input=f7f8a772a2df3427]*/
+{
     const char* database;
-    PyObject* database_obj;
-    int detect_types = 0;
-    PyObject* isolation_level = NULL;
-    PyObject* factory = NULL;
-    int check_same_thread = 1;
-    int cached_statements = 100;
-    int uri = 0;
-    double timeout = 5.0;
     int rc;
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O&|diOiOip", kwlist,
-                                     PyUnicode_FSConverter, &database_obj, &timeout, &detect_types,
-                                     &isolation_level, &check_same_thread,
-                                     &factory, &cached_statements, &uri))
-    {
-        return -1;
-    }
-
     database = PyBytes_AsString(database_obj);
 
     self->initialized = 1;

diff --git a/Modules/_sqlite/connection.h b/Modules/_sqlite/connection.h
@@ -112,7 +112,6 @@ PyObject* pysqlite_connection_alloc(PyTypeObject* type, int aware);
 void pysqlite_connection_dealloc(pysqlite_Connection* self);
 PyObject* _pysqlite_connection_begin(pysqlite_Connection* self);
 PyObject* pysqlite_connection_new(PyTypeObject* type, PyObject* args, PyObject* kw);
-int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject* kwargs);
 
 int pysqlite_connection_register_cursor(pysqlite_Connection* connection, PyObject* cursor);
 int pysqlite_check_thread(pysqlite_Connection* self);