mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-22 08:56:34 +03:00
Converted typecast class to new-style and implemented much better compare method.
This commit is contained in:
Federico Di Gregorio
parent
c5bc1a3b9a
commit
e727c49134
11
ChangeLog
11
ChangeLog
|
|
@ -1,4 +1,13 @@
|
|||
2005-11-04 Federico Di Gregorio <fog@initd.org>
|
||||
2005-11-04 Federico Di Gregorio <fog@initd.org>
|
||||
|
||||
* psycopg/typecast.c: a lot of changes:
|
||||
- made typecast a new-style type
|
||||
- removed coerce code and implemented the richcompare protocol that
|
||||
allows to compare objects of different types
|
||||
- much better __cmp__ method that allows to compare two typecast
|
||||
objects and returns True if any two of the mapped oids match
|
||||
- any object that can be used as an int works as right-hand operand
|
||||
in __cmp__ operations
|
||||
|
||||
* psycopg/typecast_datetime.c: now typecast_PYINTERVAL_cast limit the
|
||||
scan to 'len' characters in the string (should fix #65.)
|
||||
|
|
|
|||
2
NEWS
2
NEWS
|
|
@ -3,6 +3,8 @@ What's new in psycopg 2.0 beta 6
|
|||
|
||||
* Support for named cursors (see examples/fetch.py).
|
||||
|
||||
* Safer parsing of time intervals.
|
||||
|
||||
What's new in psycopg 2.0 beta 5
|
||||
--------------------------------
|
||||
|
||||
|
|
|
|||
|
|
@ -198,133 +198,78 @@ typecast_add(PyObject *obj, int binary)
|
|||
|
||||
#define OFFSETOF(x) offsetof(typecastObject, x)
|
||||
|
||||
static struct memberlist typecastObject_memberlist[] = {
|
||||
static int
|
||||
typecast_cmp(PyObject *obj1, PyObject* obj2)
|
||||
{
|
||||
typecastObject *self = (typecastObject*)obj1;
|
||||
typecastObject *other = NULL;
|
||||
PyObject *number = NULL;
|
||||
int i, j, res = -1;
|
||||
|
||||
if (PyObject_TypeCheck(obj2, &typecastType)) {
|
||||
other = (typecastObject*)obj2;
|
||||
}
|
||||
else {
|
||||
number = PyNumber_Int(obj2);
|
||||
}
|
||||
|
||||
Dprintf("typecast_cmp: other = %p, number = %p", other, number);
|
||||
|
||||
for (i=0; i < PyObject_Length(self->values) && res == -1; i++) {
|
||||
long int val = PyInt_AsLong(PyTuple_GET_ITEM(self->values, i));
|
||||
|
||||
if (other != NULL) {
|
||||
for (j=0; j < PyObject_Length(other->values); j++) {
|
||||
if (PyInt_AsLong(PyTuple_GET_ITEM(other->values, j)) == val) {
|
||||
res = 0; break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
else if (number != NULL) {
|
||||
if (PyInt_AsLong(number) == val) {
|
||||
res = 0; break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Py_XDECREF(number);
|
||||
return res;
|
||||
}
|
||||
|
||||
static PyObject*
|
||||
typecast_richcompare(PyObject *obj1, PyObject* obj2, int opid)
|
||||
{
|
||||
PyObject *result = NULL;
|
||||
int res = typecast_cmp(obj1, obj2);
|
||||
|
||||
if (PyErr_Occurred()) return NULL;
|
||||
|
||||
if ((opid == Py_EQ && res == 0) || (opid != Py_EQ && res != 0))
|
||||
result = Py_True;
|
||||
else
|
||||
result = Py_False;
|
||||
|
||||
Py_INCREF(result);
|
||||
return result;
|
||||
}
|
||||
|
||||
static struct PyMemberDef typecastObject_members[] = {
|
||||
{"name", T_OBJECT, OFFSETOF(name), RO},
|
||||
{"values", T_OBJECT, OFFSETOF(values), RO},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
/* numeric methods */
|
||||
|
||||
static PyObject *
|
||||
typecast_new(PyObject *name, PyObject *values, PyObject *cast, PyObject *base);
|
||||
|
||||
static int
|
||||
typecast_coerce(PyObject **pv, PyObject **pw)
|
||||
{
|
||||
if (PyObject_TypeCheck(*pv, &typecastType)) {
|
||||
if (PyInt_Check(*pw)) {
|
||||
PyObject *coer, *args;
|
||||
args = PyTuple_New(1);
|
||||
Py_INCREF(*pw);
|
||||
PyTuple_SET_ITEM(args, 0, *pw);
|
||||
coer = typecast_new(NULL, args, NULL, NULL);
|
||||
*pw = coer;
|
||||
Py_DECREF(args);
|
||||
Py_INCREF(*pv);
|
||||
return 0;
|
||||
}
|
||||
else if (PyObject_TypeCheck(*pw, &typecastType)){
|
||||
Py_INCREF(*pv);
|
||||
Py_INCREF(*pw);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* PyErr_SetString(PyExc_TypeError, "type coercion failed"); */
|
||||
/* let's try to return None instead of raising an exception */
|
||||
Py_INCREF(*pv);
|
||||
Py_INCREF(*pw);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static PyNumberMethods typecastObject_as_number = {
|
||||
0, /*nb_add*/
|
||||
0, /*nb_subtract*/
|
||||
0, /*nb_multiply*/
|
||||
0, /*nb_divide*/
|
||||
0, /*nb_remainder*/
|
||||
0, /*nb_divmod*/
|
||||
0, /*nb_power*/
|
||||
0, /*nb_negative*/
|
||||
0, /*nb_positive*/
|
||||
0, /*nb_absolute*/
|
||||
0, /*nb_nonzero*/
|
||||
0, /*nb_invert*/
|
||||
0, /*nb_lshift*/
|
||||
0, /*nb_rshift*/
|
||||
0, /*nb_and*/
|
||||
0, /*nb_xor*/
|
||||
0, /*nb_or*/
|
||||
typecast_coerce, /*nb_coerce*/
|
||||
0, /*nb_int*/
|
||||
0, /*nb_long*/
|
||||
0, /*nb_float*/
|
||||
0, /*nb_oct*/
|
||||
0, /*nb_hex*/
|
||||
};
|
||||
|
||||
|
||||
/* object methods */
|
||||
|
||||
static int
|
||||
typecast_cmp(typecastObject *self, PyObject* obj)
|
||||
{
|
||||
typecastObject *v = NULL;
|
||||
int res;
|
||||
|
||||
if (PyObject_TypeCheck(obj, &typecastType)) {
|
||||
v = (typecastObject*)obj;
|
||||
}
|
||||
else {
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (PyObject_Length(v->values) > 1 && PyObject_Length(self->values) == 1) {
|
||||
/* calls itself exchanging the args */
|
||||
return typecast_cmp(v, (PyObject*)self);
|
||||
}
|
||||
res = PySequence_Contains(self->values, PyTuple_GET_ITEM(v->values, 0));
|
||||
|
||||
if (res < 0) return res;
|
||||
else return res == 1 ? 0 : 1;
|
||||
}
|
||||
|
||||
static struct PyMethodDef typecastObject_methods[] = {
|
||||
{"__cmp__", (PyCFunction)typecast_cmp, METH_VARARGS, NULL},
|
||||
{NULL, NULL}
|
||||
};
|
||||
|
||||
/** FIXME: typecast should become a new-style type sometime in the future, but
|
||||
right now this is not important and we keep going with old class */
|
||||
|
||||
static PyObject *
|
||||
typecast_getattr(typecastObject *self, char *name)
|
||||
{
|
||||
PyObject *rv;
|
||||
|
||||
rv = PyMember_Get((char *)self, typecastObject_memberlist, name);
|
||||
if (rv) return rv;
|
||||
PyErr_Clear();
|
||||
return Py_FindMethod(typecastObject_methods, (PyObject *)self, name);
|
||||
}
|
||||
|
||||
static void
|
||||
typecast_destroy(typecastObject *self)
|
||||
typecast_dealloc(PyObject *obj)
|
||||
{
|
||||
PyObject *name, *cast, *values;
|
||||
typecastObject *self = (typecastObject*)obj;
|
||||
|
||||
Py_XDECREF(self->values);
|
||||
Py_XDECREF(self->name);
|
||||
Py_XDECREF(self->pcast);
|
||||
|
||||
values = self->values;
|
||||
name = self->name;
|
||||
cast = self->pcast;
|
||||
|
||||
PyObject_Del(self);
|
||||
|
||||
Py_XDECREF(name);
|
||||
Py_XDECREF(values);
|
||||
Py_XDECREF(cast);
|
||||
|
||||
Dprintf("typecast_destroy: object at %p destroyed", self);
|
||||
obj->ob_type->tp_free(obj);
|
||||
}
|
||||
|
||||
static PyObject *
|
||||
|
|
@ -341,32 +286,64 @@ typecast_call(PyObject *obj, PyObject *args, PyObject *kwargs)
|
|||
cursor);
|
||||
}
|
||||
|
||||
|
||||
PyTypeObject typecastType = {
|
||||
PyObject_HEAD_INIT(NULL)
|
||||
|
||||
0, /*ob_size*/
|
||||
"psycopg2._psycopg.type", /*tp_name*/
|
||||
sizeof(typecastObject), /*tp_basicsize*/
|
||||
0, /*tp_itemsize*/
|
||||
|
||||
/* methods */
|
||||
(destructor)typecast_destroy, /*tp_dealloc*/
|
||||
0, /*tp_print*/
|
||||
(getattrfunc)typecast_getattr, /*tp_getattr*/
|
||||
0, /*tp_setattr*/
|
||||
(cmpfunc)typecast_cmp, /*tp_compare*/
|
||||
0, /*tp_repr*/
|
||||
&typecastObject_as_number, /*tp_as_number*/
|
||||
0, /*tp_as_sequence*/
|
||||
0, /*tp_as_mapping*/
|
||||
0, /*tp_hash*/
|
||||
typecast_call, /*tp_call*/
|
||||
0, /*tp_str*/
|
||||
0,
|
||||
"psycopg2._psycopg.type",
|
||||
sizeof(typecastObject),
|
||||
0,
|
||||
|
||||
/* Space for future expansion */
|
||||
0L,0L,0L,0L,
|
||||
"psycopg type-casting object" /* Documentation string */
|
||||
typecast_dealloc, /*tp_dealloc*/
|
||||
0, /*tp_print*/
|
||||
0, /*tp_getattr*/
|
||||
0, /*tp_setattr*/
|
||||
typecast_cmp, /*tp_compare*/
|
||||
0, /*tp_repr*/
|
||||
0, /*tp_as_number*/
|
||||
0, /*tp_as_sequence*/
|
||||
0, /*tp_as_mapping*/
|
||||
0, /*tp_hash */
|
||||
|
||||
typecast_call, /*tp_call*/
|
||||
0, /*tp_str*/
|
||||
0, /*tp_getattro*/
|
||||
0, /*tp_setattro*/
|
||||
0, /*tp_as_buffer*/
|
||||
|
||||
Py_TPFLAGS_HAVE_RICHCOMPARE, /*tp_flags*/
|
||||
"psycopg type-casting object", /*tp_doc*/
|
||||
|
||||
0, /*tp_traverse*/
|
||||
0, /*tp_clear*/
|
||||
|
||||
typecast_richcompare, /*tp_richcompare*/
|
||||
0, /*tp_weaklistoffset*/
|
||||
|
||||
0, /*tp_iter*/
|
||||
0, /*tp_iternext*/
|
||||
|
||||
/* Attribute descriptor and subclassing stuff */
|
||||
|
||||
0, /*tp_methods*/
|
||||
typecastObject_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 will be set to PyType_GenericAlloc in module init*/
|
||||
0, /*tp_new*/
|
||||
0, /*tp_free Low-level free-memory routine */
|
||||
0, /*tp_is_gc For PyObject_IS_GC */
|
||||
0, /*tp_bases*/
|
||||
0, /*tp_mro method resolution order */
|
||||
0, /*tp_cache*/
|
||||
0, /*tp_subclasses*/
|
||||
0 /*tp_weaklist*/
|
||||
};
|
||||
|
||||
static PyObject *
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user