diff options
| -rw-r--r-- | Lib/test/test_datetime.py | 162 | ||||
| -rw-r--r-- | Misc/NEWS | 3 | ||||
| -rw-r--r-- | Modules/datetimemodule.c | 76 |
3 files changed, 180 insertions, 61 deletions
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py index 51b5f4f..c4978f3 100644 --- a/Lib/test/test_datetime.py +++ b/Lib/test/test_datetime.py @@ -479,37 +479,6 @@ class TestDateOnly(unittest.TestCase): dt2 = dt - delta self.assertEqual(dt2, dt - days) - def test_subclass_date(self): - - # XXX When datetime becomes usably subclassable, uncomment the - # XXX "self.theclass" lines and move this into TestDate. - # class C(self.theclass): - class C(date): - theAnswer = 42 - - def __new__(cls, *args, **kws): - temp = kws.copy() - extra = temp.pop('extra') - # result = self.theclass.__new__(cls, *args, **temp) - result = date.__new__(cls, *args, **temp) - result.extra = extra - return result - - def newmeth(self, start): - return start + self.year + self.month - - args = 2003, 4, 14 - - # dt1 = self.theclass(*args) - dt1 = date(*args) - dt2 = C(*args, **{'extra': 7}) - - self.assertEqual(dt2.__class__, C) - self.assertEqual(dt2.theAnswer, 42) - self.assertEqual(dt2.extra, 7) - self.assertEqual(dt1.toordinal(), dt2.toordinal()) - self.assertEqual(dt2.newmeth(-7), dt1.year + dt1.month - 7) - class TestDate(HarmlessMixedComparison): # Tests here should pass for both dates and datetimes, except for a # few tests that TestDateTime overrides. @@ -1002,6 +971,32 @@ class TestDate(HarmlessMixedComparison): base = cls(2000, 2, 29) self.assertRaises(ValueError, base.replace, year=2001) + def test_subclass_date(self): + + class C(self.theclass): + theAnswer = 42 + + def __new__(cls, *args, **kws): + temp = kws.copy() + extra = temp.pop('extra') + result = self.theclass.__new__(cls, *args, **temp) + result.extra = extra + return result + + def newmeth(self, start): + return start + self.year + self.month + + args = 2003, 4, 14 + + dt1 = self.theclass(*args) + dt2 = C(*args, **{'extra': 7}) + + self.assertEqual(dt2.__class__, C) + self.assertEqual(dt2.theAnswer, 42) + self.assertEqual(dt2.extra, 7) + self.assertEqual(dt1.toordinal(), dt2.toordinal()) + self.assertEqual(dt2.newmeth(-7), dt1.year + dt1.month - 7) + ############################################################################# # datetime tests @@ -1426,6 +1421,33 @@ class TestDateTime(TestDate): alsobog = AlsoBogus() self.assertRaises(ValueError, dt.astimezone, alsobog) # also naive + def test_subclass_datetime(self): + + class C(self.theclass): + theAnswer = 42 + + def __new__(cls, *args, **kws): + temp = kws.copy() + extra = temp.pop('extra') + result = self.theclass.__new__(cls, *args, **temp) + result.extra = extra + return result + + def newmeth(self, start): + return start + self.year + self.month + self.second + + args = 2003, 4, 14, 12, 13, 41 + + dt1 = self.theclass(*args) + dt2 = C(*args, **{'extra': 7}) + + self.assertEqual(dt2.__class__, C) + self.assertEqual(dt2.theAnswer, 42) + self.assertEqual(dt2.extra, 7) + self.assertEqual(dt1.toordinal(), dt2.toordinal()) + self.assertEqual(dt2.newmeth(-7), dt1.year + dt1.month + + dt1.second - 7) + class TestTime(HarmlessMixedComparison): theclass = time @@ -1660,6 +1682,32 @@ class TestTime(HarmlessMixedComparison): self.assertRaises(ValueError, base.replace, second=100) self.assertRaises(ValueError, base.replace, microsecond=1000000) + def test_subclass_time(self): + + class C(self.theclass): + theAnswer = 42 + + def __new__(cls, *args, **kws): + temp = kws.copy() + extra = temp.pop('extra') + result = self.theclass.__new__(cls, *args, **temp) + result.extra = extra + return result + + def newmeth(self, start): + return start + self.hour + self.second + + args = 4, 5, 6 + + dt1 = self.theclass(*args) + dt2 = C(*args, **{'extra': 7}) + + self.assertEqual(dt2.__class__, C) + self.assertEqual(dt2.theAnswer, 42) + self.assertEqual(dt2.extra, 7) + self.assertEqual(dt1.isoformat(), dt2.isoformat()) + self.assertEqual(dt2.newmeth(-7), dt1.hour + dt1.second - 7) + # A mixin for classes with a tzinfo= argument. Subclasses must define # theclass as a class atribute, and theclass(1, 1, 1, tzinfo=whatever) # must be legit (which is true for time and datetime). @@ -2042,6 +2090,32 @@ class TestTimeTZ(TestTime, TZInfoBase): t2 = t2.replace(tzinfo=Varies()) self.failUnless(t1 < t2) # t1's offset counter still going up + def test_subclass_timetz(self): + + class C(self.theclass): + theAnswer = 42 + + def __new__(cls, *args, **kws): + temp = kws.copy() + extra = temp.pop('extra') + result = self.theclass.__new__(cls, *args, **temp) + result.extra = extra + return result + + def newmeth(self, start): + return start + self.hour + self.second + + args = 4, 5, 6, 500, FixedOffset(-300, "EST", 1) + + dt1 = self.theclass(*args) + dt2 = C(*args, **{'extra': 7}) + + self.assertEqual(dt2.__class__, C) + self.assertEqual(dt2.theAnswer, 42) + self.assertEqual(dt2.extra, 7) + self.assertEqual(dt1.utcoffset(), dt2.utcoffset()) + self.assertEqual(dt2.newmeth(-7), dt1.hour + dt1.second - 7) + # Testing datetime objects with a non-None tzinfo. @@ -2625,6 +2699,32 @@ class TestDateTimeTZ(TestDateTime, TZInfoBase): t2 = t2.replace(tzinfo=Varies()) self.failUnless(t1 < t2) # t1's offset counter still going up + def test_subclass_datetimetz(self): + + class C(self.theclass): + theAnswer = 42 + + def __new__(cls, *args, **kws): + temp = kws.copy() + extra = temp.pop('extra') + result = self.theclass.__new__(cls, *args, **temp) + result.extra = extra + return result + + def newmeth(self, start): + return start + self.hour + self.year + + args = 2002, 12, 31, 4, 5, 6, 500, FixedOffset(-300, "EST", 1) + + dt1 = self.theclass(*args) + dt2 = C(*args, **{'extra': 7}) + + self.assertEqual(dt2.__class__, C) + self.assertEqual(dt2.theAnswer, 42) + self.assertEqual(dt2.extra, 7) + self.assertEqual(dt1.utcoffset(), dt2.utcoffset()) + self.assertEqual(dt2.newmeth(-7), dt1.hour + dt1.year - 7) + # Pain to set up DST-aware tzinfo classes. def first_sunday_on_or_after(dt): @@ -26,6 +26,9 @@ Core and builtins Extension modules ----------------- +- The datetime.datetime and datetime.time classes are now properly + subclassable. + - _tkinter.{get|set}busywaitinterval was added. - itertools.islice() now accepts stop=None as documented. diff --git a/Modules/datetimemodule.c b/Modules/datetimemodule.c index d25eb70..3679338 100644 --- a/Modules/datetimemodule.c +++ b/Modules/datetimemodule.c @@ -1235,38 +1235,42 @@ cmperror(PyObject *a, PyObject *b) } /* --------------------------------------------------------------------------- - * Basic object allocation. These allocate Python objects of the right - * size and type, and do the Python object-initialization bit. If there's - * not enough memory, they return NULL after setting MemoryError. All - * data members remain uninitialized trash. + * Basic object allocation: tp_alloc implementatiosn. These allocate + * Python objects of the right size and type, and do the Python object- + * initialization bit. If there's not enough memory, they return NULL after + * setting MemoryError. All data members remain uninitialized trash. + * + * We abuse the tp_alloc "nitems" argument to communicate whether a tzinfo + * member is needed. This is ugly. */ -static PyDateTime_Time * -alloc_time(int aware) + +static PyObject * +time_alloc(PyTypeObject *type, int aware) { - PyDateTime_Time *self; + PyObject *self; - self = (PyDateTime_Time *) + self = (PyObject *) PyObject_MALLOC(aware ? sizeof(PyDateTime_Time) : sizeof(_PyDateTime_BaseTime)); if (self == NULL) - return (PyDateTime_Time *)PyErr_NoMemory(); - PyObject_INIT(self, &PyDateTime_TimeType); + return (PyObject *)PyErr_NoMemory(); + PyObject_INIT(self, type); return self; } -static PyDateTime_DateTime * -alloc_datetime(int aware) +static PyObject * +datetime_alloc(PyTypeObject *type, int aware) { - PyDateTime_DateTime *self; + PyObject *self; - self = (PyDateTime_DateTime *) + self = (PyObject *) PyObject_MALLOC(aware ? sizeof(PyDateTime_DateTime) : sizeof(_PyDateTime_BaseDateTime)); if (self == NULL) - return (PyDateTime_DateTime *)PyErr_NoMemory(); - PyObject_INIT(self, &PyDateTime_DateTimeType); + return (PyObject *)PyErr_NoMemory(); + PyObject_INIT(self, type); return self; } @@ -1302,17 +1306,17 @@ new_date_ex(int year, int month, int day, PyTypeObject *type) } #define new_date(year, month, day) \ - (new_date_ex(year, month, day, &PyDateTime_DateType)) + new_date_ex(year, month, day, &PyDateTime_DateType) /* Create a datetime instance with no range checking. */ static PyObject * -new_datetime(int year, int month, int day, int hour, int minute, - int second, int usecond, PyObject *tzinfo) +new_datetime_ex(int year, int month, int day, int hour, int minute, + int second, int usecond, PyObject *tzinfo, PyTypeObject *type) { PyDateTime_DateTime *self; char aware = tzinfo != Py_None; - self = alloc_datetime(aware); + self = (PyDateTime_DateTime *) (type->tp_alloc(type, aware)); if (self != NULL) { self->hastzinfo = aware; set_date_fields((PyDateTime_Date *)self, year, month, day); @@ -1328,14 +1332,19 @@ new_datetime(int year, int month, int day, int hour, int minute, return (PyObject *)self; } +#define new_datetime(y, m, d, hh, mm, ss, us, tzinfo) \ + new_datetime_ex(y, m, d, hh, mm, ss, us, tzinfo, \ + &PyDateTime_DateTimeType) + /* Create a time instance with no range checking. */ static PyObject * -new_time(int hour, int minute, int second, int usecond, PyObject *tzinfo) +new_time_ex(int hour, int minute, int second, int usecond, + PyObject *tzinfo, PyTypeObject *type) { PyDateTime_Time *self; char aware = tzinfo != Py_None; - self = alloc_time(aware); + self = (PyDateTime_Time *) (type->tp_alloc(type, aware)); if (self != NULL) { self->hastzinfo = aware; self->hashcode = -1; @@ -1351,6 +1360,9 @@ new_time(int hour, int minute, int second, int usecond, PyObject *tzinfo) return (PyObject *)self; } +#define new_time(hh, mm, ss, us, tzinfo) \ + new_time_ex(hh, mm, ss, us, tzinfo, &PyDateTime_TimeType) + /* Create a timedelta instance. Normalize the members iff normalize is * true. Passing false is a speed optimization, if you know for sure * that seconds and microseconds are already in their proper ranges. In any @@ -3014,7 +3026,8 @@ time_new(PyTypeObject *type, PyObject *args, PyObject *kw) } } aware = (char)(tzinfo != Py_None); - me = alloc_time(aware); + me = (PyDateTime_Time *) time_alloc(&PyDateTime_TimeType, + aware); if (me != NULL) { char *pdata = PyString_AS_STRING(state); @@ -3036,7 +3049,8 @@ time_new(PyTypeObject *type, PyObject *args, PyObject *kw) return NULL; if (check_tzinfo_subclass(tzinfo) < 0) return NULL; - self = new_time(hour, minute, second, usecond, tzinfo); + self = new_time_ex(hour, minute, second, usecond, tzinfo, + type); } return self; } @@ -3439,7 +3453,7 @@ statichere PyTypeObject PyDateTime_TimeType = { 0, /* tp_descr_set */ 0, /* tp_dictoffset */ 0, /* tp_init */ - 0, /* tp_alloc */ + time_alloc, /* tp_alloc */ time_new, /* tp_new */ 0, /* tp_free */ }; @@ -3534,7 +3548,9 @@ datetime_new(PyTypeObject *type, PyObject *args, PyObject *kw) } } aware = (char)(tzinfo != Py_None); - me = alloc_datetime(aware); + me = (PyDateTime_DateTime *) datetime_alloc( + &PyDateTime_DateTimeType, + aware); if (me != NULL) { char *pdata = PyString_AS_STRING(state); @@ -3558,9 +3574,9 @@ datetime_new(PyTypeObject *type, PyObject *args, PyObject *kw) return NULL; if (check_tzinfo_subclass(tzinfo) < 0) return NULL; - self = new_datetime(year, month, day, - hour, minute, second, usecond, - tzinfo); + self = new_datetime_ex(year, month, day, + hour, minute, second, usecond, + tzinfo, type); } return self; } @@ -4460,7 +4476,7 @@ statichere PyTypeObject PyDateTime_DateTimeType = { 0, /* tp_descr_set */ 0, /* tp_dictoffset */ 0, /* tp_init */ - 0, /* tp_alloc */ + datetime_alloc, /* tp_alloc */ datetime_new, /* tp_new */ 0, /* tp_free */ }; |