cpython/Modules/_sqlite/cursor.c at master · python-emscripten/cpython · GitHub

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/* cursor.c - the cursor type

* This file is part of pysqlite.

* This software is provided 'as-is', without any express or implied

* warranty. In no event will the authors be held liable for any damages

* arising from the use of this software.

* Permission is granted to anyone to use this software for any purpose,

* including commercial applications, and to alter it and redistribute it

* freely, subject to the following restrictions:

* 1. The origin of this software must not be misrepresented; you must not

* claim that you wrote the original software. If you use this software

* in a product, an acknowledgment in the product documentation would be

* appreciated but is not required.

* 2. Altered source versions must be plainly marked as such, and must not be

* misrepresented as being the original software.

* 3. This notice may not be removed or altered from any source distribution.

#include "cursor.h"

#include "module.h"

#include "util.h"

PyObject* pysqlite_cursor_iternext(pysqlite_Cursor* self);

static const char errmsg_fetch_across_rollback[] = "Cursor needed to be reset because of commit/rollback and can no longer be fetched from.";

static int pysqlite_cursor_init(pysqlite_Cursor* self, PyObject* args, PyObject* kwargs)

{

pysqlite_Connection* connection;

if (!PyArg_ParseTuple(args, "O!", &pysqlite_ConnectionType, &connection))

{

return -1;

}

Py_INCREF(connection);

Py_XSETREF(self->connection, connection);

Py_CLEAR(self->statement);

Py_CLEAR(self->next_row);

Py_CLEAR(self->row_cast_map);

Py_INCREF(Py_None);

Py_XSETREF(self->description, Py_None);

Py_INCREF(Py_None);

Py_XSETREF(self->lastrowid, Py_None);

self->arraysize = 1;

self->closed = 0;

self->reset = 0;

self->rowcount = -1L;

Py_INCREF(Py_None);

Py_XSETREF(self->row_factory, Py_None);

if (!pysqlite_check_thread(self->connection)) {

return -1;

}

if (!pysqlite_connection_register_cursor(connection, (PyObject*)self)) {

return -1;

}

self->initialized = 1;

return 0;

}

static void pysqlite_cursor_dealloc(pysqlite_Cursor* self)

{

/* Reset the statement if the user has not closed the cursor */

if (self->statement) {

pysqlite_statement_reset(self->statement);

Py_DECREF(self->statement);

}

Py_XDECREF(self->connection);

Py_XDECREF(self->row_cast_map);

Py_XDECREF(self->description);

Py_XDECREF(self->lastrowid);

Py_XDECREF(self->row_factory);

Py_XDECREF(self->next_row);

if (self->in_weakreflist != NULL) {

PyObject_ClearWeakRefs((PyObject*)self);

}

Py_TYPE(self)->tp_free((PyObject*)self);

}

static PyObject *

_pysqlite_get_converter(const char *keystr, Py_ssize_t keylen)

{

PyObject *key;

PyObject *upcase_key;

PyObject *retval;

_Py_IDENTIFIER(upper);

key = PyUnicode_FromStringAndSize(keystr, keylen);

if (!key) {

return NULL;

}

upcase_key = _PyObject_CallMethodIdNoArgs(key, &PyId_upper);

Py_DECREF(key);

if (!upcase_key) {

return NULL;

}

retval = PyDict_GetItemWithError(_pysqlite_converters, upcase_key);

Py_DECREF(upcase_key);

return retval;

}

static int

pysqlite_build_row_cast_map(pysqlite_Cursor* self)

{

int i;

const char* pos;

const char* colname;

const char* decltype;

PyObject* converter;

if (!self->connection->detect_types) {

return 0;

}

Py_XSETREF(self->row_cast_map, PyList_New(0));

if (!self->row_cast_map) {

return -1;

}

for (i = 0; i < sqlite3_column_count(self->statement->st); i++) {

converter = NULL;

if (self->connection->detect_types & PARSE_COLNAMES) {

colname = sqlite3_column_name(self->statement->st, i);

if (colname) {

const char *type_start = NULL;

for (pos = colname; *pos != 0; pos++) {

if (*pos == '[') {

type_start = pos + 1;

}

else if (*pos == ']' && type_start != NULL) {

converter = _pysqlite_get_converter(type_start, pos - type_start);

if (!converter && PyErr_Occurred()) {

Py_CLEAR(self->row_cast_map);

return -1;

}

break;

}

if (!converter && self->connection->detect_types & PARSE_DECLTYPES) {

decltype = sqlite3_column_decltype(self->statement->st, i);

if (decltype) {

for (pos = decltype;;pos++) {

/* Converter names are split at '(' and blanks.

* This allows 'INTEGER NOT NULL' to be treated as 'INTEGER' and

* 'NUMBER(10)' to be treated as 'NUMBER', for example.

* In other words, it will work as people expect it to work.*/

if (*pos == ' ' || *pos == '(' || *pos == 0) {

converter = _pysqlite_get_converter(decltype, pos - decltype);

if (!converter && PyErr_Occurred()) {

Py_CLEAR(self->row_cast_map);

return -1;

}

break;

}

if (!converter) {

converter = Py_None;

}

if (PyList_Append(self->row_cast_map, converter) != 0) {

Py_CLEAR(self->row_cast_map);

return -1;

}

return 0;

}

static PyObject *

_pysqlite_build_column_name(pysqlite_Cursor *self, const char *colname)

{

const char* pos;

Py_ssize_t len;

if (!colname) {

Py_RETURN_NONE;

}

if (self->connection->detect_types & PARSE_COLNAMES) {

for (pos = colname; *pos; pos++) {

if (*pos == '[') {

if ((pos != colname) && (*(pos-1) == ' ')) {

pos--;

}

break;

}

len = pos - colname;

}

else {

len = strlen(colname);

}

return PyUnicode_FromStringAndSize(colname, len);

}

* Returns a row from the currently active SQLite statement

* Precondidition:

* - sqlite3_step() has been called before and it returned SQLITE_ROW.

static PyObject *

_pysqlite_fetch_one_row(pysqlite_Cursor* self)

{

int i, numcols;

PyObject* row;

PyObject* item = NULL;

int coltype;

PyObject* converter;

PyObject* converted;

Py_ssize_t nbytes;

const char* val_str;

char buf[200];

const char* colname;

PyObject* error_msg;

if (self->reset) {

PyErr_SetString(pysqlite_InterfaceError, errmsg_fetch_across_rollback);

return NULL;

}

Py_BEGIN_ALLOW_THREADS

numcols = sqlite3_data_count(self->statement->st);

Py_END_ALLOW_THREADS

row = PyTuple_New(numcols);

if (!row)

return NULL;

for (i = 0; i < numcols; i++) {

if (self->connection->detect_types

&& self->row_cast_map != NULL

&& i < PyList_GET_SIZE(self->row_cast_map))

{

converter = PyList_GET_ITEM(self->row_cast_map, i);

}

else {

converter = Py_None;

}

if (converter != Py_None) {

nbytes = sqlite3_column_bytes(self->statement->st, i);

val_str = (const char*)sqlite3_column_blob(self->statement->st, i);

if (!val_str) {

Py_INCREF(Py_None);

converted = Py_None;

} else {

item = PyBytes_FromStringAndSize(val_str, nbytes);

if (!item)

goto error;

converted = PyObject_CallOneArg(converter, item);

Py_DECREF(item);

}

} else {

Py_BEGIN_ALLOW_THREADS

coltype = sqlite3_column_type(self->statement->st, i);

Py_END_ALLOW_THREADS

if (coltype == SQLITE_NULL) {

Py_INCREF(Py_None);

converted = Py_None;

} else if (coltype == SQLITE_INTEGER) {

converted = PyLong_FromLongLong(sqlite3_column_int64(self->statement->st, i));

} else if (coltype == SQLITE_FLOAT) {

converted = PyFloat_FromDouble(sqlite3_column_double(self->statement->st, i));

} else if (coltype == SQLITE_TEXT) {

val_str = (const char*)sqlite3_column_text(self->statement->st, i);

nbytes = sqlite3_column_bytes(self->statement->st, i);

if (self->connection->text_factory == (PyObject*)&PyUnicode_Type) {

converted = PyUnicode_FromStringAndSize(val_str, nbytes);

if (!converted && PyErr_ExceptionMatches(PyExc_UnicodeDecodeError)) {

PyErr_Clear();

colname = sqlite3_column_name(self->statement->st, i);

if (!colname) {

colname = "<unknown column name>";

}

PyOS_snprintf(buf, sizeof(buf) - 1, "Could not decode to UTF-8 column '%s' with text '%s'",

colname , val_str);

error_msg = PyUnicode_Decode(buf, strlen(buf), "ascii", "replace");

if (!error_msg) {

PyErr_SetString(pysqlite_OperationalError, "Could not decode to UTF-8");

} else {

PyErr_SetObject(pysqlite_OperationalError, error_msg);

Py_DECREF(error_msg);

}

} else if (self->connection->text_factory == (PyObject*)&PyBytes_Type) {

converted = PyBytes_FromStringAndSize(val_str, nbytes);

} else if (self->connection->text_factory == (PyObject*)&PyByteArray_Type) {

converted = PyByteArray_FromStringAndSize(val_str, nbytes);

} else {

converted = PyObject_CallFunction(self->connection->text_factory, "y#", val_str, nbytes);

}

} else {

/* coltype == SQLITE_BLOB */

nbytes = sqlite3_column_bytes(self->statement->st, i);

converted = PyBytes_FromStringAndSize(

sqlite3_column_blob(self->statement->st, i), nbytes);

}

if (!converted) {

goto error;

}

PyTuple_SetItem(row, i, converted);

}

if (PyErr_Occurred())

goto error;

return row;

error:

Py_DECREF(row);

return NULL;

}

* Checks if a cursor object is usable.

* 0 => error; 1 => ok

static int check_cursor(pysqlite_Cursor* cur)

{

if (!cur->initialized) {

PyErr_SetString(pysqlite_ProgrammingError, "Base Cursor.__init__ not called.");

return 0;

}

if (cur->closed) {

PyErr_SetString(pysqlite_ProgrammingError, "Cannot operate on a closed cursor.");

return 0;

}

if (cur->locked) {

PyErr_SetString(pysqlite_ProgrammingError, "Recursive use of cursors not allowed.");

return 0;

}

return pysqlite_check_thread(cur->connection) && pysqlite_check_connection(cur->connection);

}

static PyObject *

_pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject* args)

{

PyObject* operation;

PyObject* parameters_list = NULL;

PyObject* parameters_iter = NULL;

PyObject* parameters = NULL;

int i;

int rc;

PyObject* func_args;

PyObject* result;

int numcols;

PyObject* descriptor;

PyObject* column_name;

PyObject* second_argument = NULL;

sqlite_int64 lastrowid;

if (!check_cursor(self)) {

goto error;

}

self->locked = 1;

self->reset = 0;

Py_CLEAR(self->next_row);

if (multiple) {

/* executemany() */

if (!PyArg_ParseTuple(args, "UO", &operation, &second_argument)) {

goto error;

}

if (PyIter_Check(second_argument)) {

/* iterator */

Py_INCREF(second_argument);

parameters_iter = second_argument;

} else {

/* sequence */

parameters_iter = PyObject_GetIter(second_argument);

if (!parameters_iter) {

goto error;

}

} else {

/* execute() */

if (!PyArg_ParseTuple(args, "U|O", &operation, &second_argument)) {

goto error;

}

parameters_list = PyList_New(0);

if (!parameters_list) {

goto error;

}

if (second_argument == NULL) {

second_argument = PyTuple_New(0);

if (!second_argument) {

goto error;

}

} else {

Py_INCREF(second_argument);

}

if (PyList_Append(parameters_list, second_argument) != 0) {

Py_DECREF(second_argument);

goto error;

}

Py_DECREF(second_argument);

parameters_iter = PyObject_GetIter(parameters_list);

if (!parameters_iter) {

goto error;

}

if (self->statement != NULL) {

/* There is an active statement */

pysqlite_statement_reset(self->statement);

}

/* reset description and rowcount */

Py_INCREF(Py_None);

Py_SETREF(self->description, Py_None);

self->rowcount = 0L;

func_args = PyTuple_New(1);

if (!func_args) {

goto error;

}

Py_INCREF(operation);

if (PyTuple_SetItem(func_args, 0, operation) != 0) {

goto error;

}

if (self->statement) {

(void)pysqlite_statement_reset(self->statement);

}

Py_XSETREF(self->statement,

(pysqlite_Statement *)pysqlite_cache_get(self->connection->statement_cache, func_args));

Py_DECREF(func_args);

if (!self->statement) {

goto error;

}

if (self->statement->in_use) {

Py_SETREF(self->statement,

PyObject_New(pysqlite_Statement, &pysqlite_StatementType));

if (!self->statement) {

goto error;

}

rc = pysqlite_statement_create(self->statement, self->connection, operation);

if (rc != SQLITE_OK) {

Py_CLEAR(self->statement);

goto error;

}

pysqlite_statement_reset(self->statement);

pysqlite_statement_mark_dirty(self->statement);

/* We start a transaction implicitly before a DML statement.

SELECT is the only exception. See #9924. */

if (self->connection->begin_statement && self->statement->is_dml) {

if (sqlite3_get_autocommit(self->connection->db)) {

result = _pysqlite_connection_begin(self->connection);

if (!result) {

goto error;

}

Py_DECREF(result);

}

while (1) {

parameters = PyIter_Next(parameters_iter);

if (!parameters) {

break;

}

pysqlite_statement_mark_dirty(self->statement);

pysqlite_statement_bind_parameters(self->statement, parameters);

if (PyErr_Occurred()) {

goto error;

}

rc = pysqlite_step(self->statement->st, self->connection);

if (rc != SQLITE_DONE && rc != SQLITE_ROW) {

if (PyErr_Occurred()) {

/* there was an error that occurred in a user-defined callback */

if (_pysqlite_enable_callback_tracebacks) {

PyErr_Print();

} else {

PyErr_Clear();

}

(void)pysqlite_statement_reset(self->statement);

_pysqlite_seterror(self->connection->db, NULL);

goto error;

}

if (pysqlite_build_row_cast_map(self) != 0) {

_PyErr_FormatFromCause(pysqlite_OperationalError, "Error while building row_cast_map");

goto error;

}

assert(rc == SQLITE_ROW || rc == SQLITE_DONE);

Py_BEGIN_ALLOW_THREADS

numcols = sqlite3_column_count(self->statement->st);

Py_END_ALLOW_THREADS

if (self->description == Py_None && numcols > 0) {

Py_SETREF(self->description, PyTuple_New(numcols));

if (!self->description) {

goto error;

}

for (i = 0; i < numcols; i++) {

descriptor = PyTuple_New(7);

if (!descriptor) {

goto error;

}

column_name = _pysqlite_build_column_name(self,

sqlite3_column_name(self->statement->st, i));

if (!column_name) {

Py_DECREF(descriptor);

goto error;

}

PyTuple_SetItem(descriptor, 0, column_name);

Py_INCREF(Py_None); PyTuple_SetItem(descriptor, 1, Py_None);

Py_INCREF(Py_None); PyTuple_SetItem(descriptor, 2, Py_None);

Py_INCREF(Py_None); PyTuple_SetItem(descriptor, 3, Py_None);

Py_INCREF(Py_None); PyTuple_SetItem(descriptor, 4, Py_None);

Py_INCREF(Py_None); PyTuple_SetItem(descriptor, 5, Py_None);

Py_INCREF(Py_None); PyTuple_SetItem(descriptor, 6, Py_None);

PyTuple_SetItem(self->description, i, descriptor);

}

if (self->statement->is_dml) {

self->rowcount += (long)sqlite3_changes(self->connection->db);

} else {

self->rowcount= -1L;

}

if (!multiple) {

Py_DECREF(self->lastrowid);

Py_BEGIN_ALLOW_THREADS

lastrowid = sqlite3_last_insert_rowid(self->connection->db);

Py_END_ALLOW_THREADS

self->lastrowid = PyLong_FromLongLong(lastrowid);

}

if (rc == SQLITE_ROW) {

if (multiple) {

PyErr_SetString(pysqlite_ProgrammingError, "executemany() can only execute DML statements.");

goto error;

}

self->next_row = _pysqlite_fetch_one_row(self);

if (self->next_row == NULL)

goto error;

} else if (rc == SQLITE_DONE && !multiple) {

pysqlite_statement_reset(self->statement);

Py_CLEAR(self->statement);

}

if (multiple) {

pysqlite_statement_reset(self->statement);

}

Py_XDECREF(parameters);

}

error:

Py_XDECREF(parameters);

Py_XDECREF(parameters_iter);

Py_XDECREF(parameters_list);

self->locked = 0;

if (PyErr_Occurred()) {

self->rowcount = -1L;

return NULL;

} else {

Py_INCREF(self);

return (PyObject*)self;

}

PyObject* pysqlite_cursor_execute(pysqlite_Cursor* self, PyObject* args)

{

return _pysqlite_query_execute(self, 0, args);

}

PyObject* pysqlite_cursor_executemany(pysqlite_Cursor* self, PyObject* args)

{

return _pysqlite_query_execute(self, 1, args);

}

static PyObject *

pysqlite_cursor_executescript(pysqlite_Cursor* self, PyObject* args)

{

PyObject* script_obj;

const char* script_cstr;

sqlite3_stmt* statement;

int rc;

PyObject* result;

if (!PyArg_ParseTuple(args, "O", &script_obj)) {

return NULL;

}

if (!check_cursor(self)) {

return NULL;

}

self->reset = 0;

if (PyUnicode_Check(script_obj)) {

script_cstr = PyUnicode_AsUTF8(script_obj);

if (!script_cstr) {

return NULL;

}

} else {

PyErr_SetString(PyExc_ValueError, "script argument must be unicode.");

return NULL;

}

/* commit first */

result = pysqlite_connection_commit(self->connection, NULL);

if (!result) {

goto error;

}

Py_DECREF(result);

while (1) {

Py_BEGIN_ALLOW_THREADS

rc = sqlite3_prepare_v2(self->connection->db,

script_cstr,

-1,

&statement,

&script_cstr);

Py_END_ALLOW_THREADS

if (rc != SQLITE_OK) {

_pysqlite_seterror(self->connection->db, NULL);

goto error;

}

/* execute statement, and ignore results of SELECT statements */

rc = SQLITE_ROW;

while (rc == SQLITE_ROW) {

rc = pysqlite_step(statement, self->connection);

if (PyErr_Occurred()) {

(void)sqlite3_finalize(statement);

goto error;

}

if (rc != SQLITE_DONE) {

(void)sqlite3_finalize(statement);

_pysqlite_seterror(self->connection->db, NULL);

goto error;

}

rc = sqlite3_finalize(statement);

if (rc != SQLITE_OK) {

_pysqlite_seterror(self->connection->db, NULL);

goto error;

}

if (*script_cstr == (char)0) {

break;

}

error:

if (PyErr_Occurred()) {

return NULL;

} else {

Py_INCREF(self);

return (PyObject*)self;

}

PyObject* pysqlite_cursor_iternext(pysqlite_Cursor *self)

{

PyObject* next_row_tuple;

PyObject* next_row;

int rc;

if (!check_cursor(self)) {

return NULL;

}

if (self->reset) {

PyErr_SetString(pysqlite_InterfaceError, errmsg_fetch_across_rollback);

return NULL;

}

if (!self->next_row) {

if (self->statement) {

(void)pysqlite_statement_reset(self->statement);

Py_CLEAR(self->statement);

}

return NULL;

}

next_row_tuple = self->next_row;

assert(next_row_tuple != NULL);

self->next_row = NULL;

if (self->row_factory != Py_None) {

next_row = PyObject_CallFunction(self->row_factory, "OO", self, next_row_tuple);

if (next_row == NULL) {

self->next_row = next_row_tuple;

return NULL;

}

Py_DECREF(next_row_tuple);

} else {

next_row = next_row_tuple;

}

if (self->statement) {

rc = pysqlite_step(self->statement->st, self->connection);

if (PyErr_Occurred()) {

(void)pysqlite_statement_reset(self->statement);

Py_DECREF(next_row);

return NULL;

}

if (rc != SQLITE_DONE && rc != SQLITE_ROW) {

(void)pysqlite_statement_reset(self->statement);

Py_DECREF(next_row);

_pysqlite_seterror(self->connection->db, NULL);

return NULL;

}

if (rc == SQLITE_ROW) {

self->next_row = _pysqlite_fetch_one_row(self);

if (self->next_row == NULL) {

(void)pysqlite_statement_reset(self->statement);

return NULL;

}

return next_row;

}

PyObject* pysqlite_cursor_fetchone(pysqlite_Cursor* self, PyObject* args)

{

PyObject* row;

row = pysqlite_cursor_iternext(self);

if (!row && !PyErr_Occurred()) {

Py_RETURN_NONE;

}

return row;

}

PyObject* pysqlite_cursor_fetchmany(pysqlite_Cursor* self, PyObject* args, PyObject* kwargs)

{

static char *kwlist[] = {"size", NULL};

PyObject* row;

PyObject* list;

int maxrows = self->arraysize;

int counter = 0;

if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i:fetchmany", kwlist, &maxrows)) {

return NULL;

}

list = PyList_New(0);

if (!list) {

return NULL;

}

while ((row = pysqlite_cursor_iternext(self))) {

PyList_Append(list, row);

Py_XDECREF(row);

if (++counter == maxrows) {

break;

}

if (PyErr_Occurred()) {

Py_DECREF(list);

return NULL;

} else {

return list;

}

PyObject* pysqlite_cursor_fetchall(pysqlite_Cursor* self, PyObject* args)

{

PyObject* row;

PyObject* list;

list = PyList_New(0);

if (!list) {

return NULL;

}

while ((row = pysqlite_cursor_iternext(self))) {

PyList_Append(list, row);

Py_XDECREF(row);

}

if (PyErr_Occurred()) {

Py_DECREF(list);

return NULL;

} else {

return list;

}

PyObject* pysqlite_noop(pysqlite_Connection* self, PyObject* args)

{

/* don't care, return None */

Py_RETURN_NONE;

}

PyObject* pysqlite_cursor_close(pysqlite_Cursor* self, PyObject* args)

{

if (!self->connection) {

PyErr_SetString(pysqlite_ProgrammingError,

"Base Cursor.__init__ not called.");

return NULL;

}

if (!pysqlite_check_thread(self->connection) || !pysqlite_check_connection(self->connection)) {

return NULL;

}

if (self->statement) {

(void)pysqlite_statement_reset(self->statement);

Py_CLEAR(self->statement);

}

self->closed = 1;

Py_RETURN_NONE;

}

static PyMethodDef cursor_methods[] = {

{"execute", (PyCFunction)pysqlite_cursor_execute, METH_VARARGS,

PyDoc_STR("Executes a SQL statement.")},

{"executemany", (PyCFunction)pysqlite_cursor_executemany, METH_VARARGS,

PyDoc_STR("Repeatedly executes a SQL statement.")},

{"executescript", (PyCFunction)pysqlite_cursor_executescript, METH_VARARGS,

PyDoc_STR("Executes a multiple SQL statements at once. Non-standard.")},

{"fetchone", (PyCFunction)pysqlite_cursor_fetchone, METH_NOARGS,

PyDoc_STR("Fetches one row from the resultset.")},

{"fetchmany", (PyCFunction)(void(*)(void))pysqlite_cursor_fetchmany, METH_VARARGS|METH_KEYWORDS,

PyDoc_STR("Fetches several rows from the resultset.")},

{"fetchall", (PyCFunction)pysqlite_cursor_fetchall, METH_NOARGS,

PyDoc_STR("Fetches all rows from the resultset.")},

{"close", (PyCFunction)pysqlite_cursor_close, METH_NOARGS,

PyDoc_STR("Closes the cursor.")},

{"setinputsizes", (PyCFunction)pysqlite_noop, METH_VARARGS,

PyDoc_STR("Required by DB-API. Does nothing in pysqlite.")},

{"setoutputsize", (PyCFunction)pysqlite_noop, METH_VARARGS,

PyDoc_STR("Required by DB-API. Does nothing in pysqlite.")},

{NULL, NULL}

};

static struct PyMemberDef cursor_members[] =

{

{"connection", T_OBJECT, offsetof(pysqlite_Cursor, connection), READONLY},

{"description", T_OBJECT, offsetof(pysqlite_Cursor, description), READONLY},

{"arraysize", T_INT, offsetof(pysqlite_Cursor, arraysize), 0},

{"lastrowid", T_OBJECT, offsetof(pysqlite_Cursor, lastrowid), READONLY},

{"rowcount", T_LONG, offsetof(pysqlite_Cursor, rowcount), READONLY},

{"row_factory", T_OBJECT, offsetof(pysqlite_Cursor, row_factory), 0},

{NULL}

};

static const char cursor_doc[] =

PyDoc_STR("SQLite database cursor class.");

PyTypeObject pysqlite_CursorType = {

PyVarObject_HEAD_INIT(NULL, 0)

MODULE_NAME ".Cursor", /* tp_name */

sizeof(pysqlite_Cursor), /* tp_basicsize */

0, /* tp_itemsize */

(destructor)pysqlite_cursor_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 */

cursor_doc, /* tp_doc */

0, /* tp_traverse */

0, /* tp_clear */

0, /* tp_richcompare */

offsetof(pysqlite_Cursor, in_weakreflist), /* tp_weaklistoffset */

PyObject_SelfIter, /* tp_iter */

(iternextfunc)pysqlite_cursor_iternext, /* tp_iternext */

cursor_methods, /* tp_methods */

cursor_members, /* tp_members */

0, /* tp_getset */

0, /* tp_base */

0, /* tp_dict */

0, /* tp_descr_get */

0, /* tp_descr_set */

0, /* tp_dictoffset */

(initproc)pysqlite_cursor_init, /* tp_init */

0, /* tp_alloc */

0, /* tp_new */

0 /* tp_free */

};

extern int pysqlite_cursor_setup_types(void)

{

pysqlite_CursorType.tp_new = PyType_GenericNew;

return PyType_Ready(&pysqlite_CursorType);

}

cpython/Modules/_sqlite/cursor.c at master · python-emscripten/cpython · GitHub

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