[Checkins] SVN: Acquisition/branches/erp5-aq_dynamic/ resync with trunk to get fix for https://bugs.launchpad.net/zope2/+bug/360761
Leonardo Rochael Almeida
leorochael at gmail.com
Thu Oct 29 09:28:28 EDT 2009
Log message for revision 105365:
resync with trunk to get fix for https://bugs.launchpad.net/zope2/+bug/360761
Changed:
U Acquisition/branches/erp5-aq_dynamic/CHANGES.txt
U Acquisition/branches/erp5-aq_dynamic/setup.py
U Acquisition/branches/erp5-aq_dynamic/src/Acquisition/_Acquisition.c
U Acquisition/branches/erp5-aq_dynamic/src/Acquisition/tests.py
-=-
Modified: Acquisition/branches/erp5-aq_dynamic/CHANGES.txt
===================================================================
--- Acquisition/branches/erp5-aq_dynamic/CHANGES.txt 2009-10-29 13:22:48 UTC (rev 105364)
+++ Acquisition/branches/erp5-aq_dynamic/CHANGES.txt 2009-10-29 13:28:28 UTC (rev 105365)
@@ -1,9 +1,17 @@
Changelog
=========
-2.12.4 (unreleased)
+2.12.5 (unreleased)
-------------------
+
+2.12.4 (2009-10-29)
+-------------------
+
+- Fix iteration proxying to pass `self` acquisition-wrapped into both
+ `__iter__` as well as `__getitem__` (this fixes
+ https://bugs.launchpad.net/zope2/+bug/360761).
+
- Add tests for the __getslice__ proxying, including open-ended slicing.
2.12.3 (2009-08-08)
Modified: Acquisition/branches/erp5-aq_dynamic/setup.py
===================================================================
--- Acquisition/branches/erp5-aq_dynamic/setup.py 2009-10-29 13:22:48 UTC (rev 105364)
+++ Acquisition/branches/erp5-aq_dynamic/setup.py 2009-10-29 13:28:28 UTC (rev 105365)
@@ -17,7 +17,7 @@
from setuptools import setup, find_packages, Extension
setup(name='Acquisition',
- version = '2.12.4dev',
+ version = '2.12.5dev',
url='http://pypi.python.org/pypi/Acquisition',
license='ZPL 2.1',
description="Acquisition is a mechanism that allows objects to obtain "
Modified: Acquisition/branches/erp5-aq_dynamic/src/Acquisition/_Acquisition.c
===================================================================
--- Acquisition/branches/erp5-aq_dynamic/src/Acquisition/_Acquisition.c 2009-10-29 13:22:48 UTC (rev 105364)
+++ Acquisition/branches/erp5-aq_dynamic/src/Acquisition/_Acquisition.c 2009-10-29 13:28:28 UTC (rev 105365)
@@ -1000,10 +1000,35 @@
return c;
}
+/* Support for iteration cannot rely on the internal implementation of
+ `PyObject_GetIter`, since the `self` passed into `__iter__` and
+ `__getitem__` should be acquisition-wrapped (also see LP 360761): The
+ wrapper obviously supports the iterator protocol so simply calling
+ `PyObject_GetIter(OBJECT(self))` results in an infinite recursion.
+ Instead the base object needs to be checked and the wrapper must only
+ be used when actually calling `__getitem__` or setting up a sequence
+ iterator. */
static PyObject *
Wrapper_iter(Wrapper *self)
{
- return PyObject_GetIter(self->obj);
+ PyObject *obj = self->obj;
+ PyObject *res;
+ if ((res=PyObject_GetAttr(OBJECT(self),py__iter__))) {
+ ASSIGN(res,PyObject_CallFunction(res,NULL,NULL));
+ if (res != NULL && !PyIter_Check(res)) {
+ PyErr_Format(PyExc_TypeError,
+ "iter() returned non-iterator "
+ "of type '%.100s'",
+ res->ob_type->tp_name);
+ Py_DECREF(res);
+ res = NULL;
+ }
+ } else if (PySequence_Check(obj)) {
+ ASSIGN(res,PySeqIter_New(OBJECT(self)));
+ } else {
+ res = PyErr_Format(PyExc_TypeError, "iteration over non-sequence");
+ }
+ return res;
}
static PySequenceMethods Wrapper_as_sequence = {
Modified: Acquisition/branches/erp5-aq_dynamic/src/Acquisition/tests.py
===================================================================
--- Acquisition/branches/erp5-aq_dynamic/src/Acquisition/tests.py 2009-10-29 13:22:48 UTC (rev 105364)
+++ Acquisition/branches/erp5-aq_dynamic/src/Acquisition/tests.py 2009-10-29 13:28:28 UTC (rev 105365)
@@ -1813,8 +1813,9 @@
slicing...
True
- Finally let's check that https://bugs.launchpad.net/zope2/+bug/360761
- has been fixed:
+ Next let's check that the wrapper's __iter__ proxy falls back
+ to using the object's __getitem__ if it has no __iter__. See
+ https://bugs.launchpad.net/zope2/+bug/360761 .
>>> class C(Acquisition.Implicit):
... l=[1,2,3]
@@ -1833,9 +1834,61 @@
>>> list(c2)
[1, 2, 3]
+ The __iter__proxy should also pass the wrapped object as self to
+ the __iter__ of objects defining __iter__::
+
+ >>> class C(Acquisition.Implicit):
+ ... def __iter__(self):
+ ... print 'iterating...'
+ ... for i in range(5):
+ ... yield i, self.aq_parent.name
+ >>> c = C()
+ >>> i = Impl()
+ >>> i.c = c
+ >>> i.name = 'i'
+ >>> list(i.c)
+ iterating...
+ [(0, 'i'), (1, 'i'), (2, 'i'), (3, 'i'), (4, 'i')]
+
+ And it should pass the wrapped object as self to
+ the __getitem__ of objects without an __iter__::
+
+ >>> class C(Acquisition.Implicit):
+ ... def __getitem__(self, i):
+ ... return self.aq_parent.l[i]
+ >>> c = C()
+ >>> i = Impl()
+ >>> i.c = c
+ >>> i.l = range(5)
+ >>> list(i.c)
+ [0, 1, 2, 3, 4]
+
+ Finally let's make sure errors are still correctly raised after having
+ to use a modified version of `PyObject_GetIter` for iterator support::
+
+ >>> class C(Acquisition.Implicit):
+ ... pass
+ >>> c = C()
+ >>> i = Impl()
+ >>> i.c = c
+ >>> list(i.c)
+ Traceback (most recent call last):
+ ...
+ TypeError: iteration over non-sequence
+
+ >>> class C(Acquisition.Implicit):
+ ... def __iter__(self):
+ ... return [42]
+ >>> c = C()
+ >>> i = Impl()
+ >>> i.c = c
+ >>> list(i.c)
+ Traceback (most recent call last):
+ ...
+ TypeError: iter() returned non-iterator of type 'list'
+
"""
-
class Location(object):
__parent__ = None
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