Commit Graph

67 Commits

Author SHA1 Message Date
Mark Dickinson cc83afd803 Merged revisions 76295 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r76295 | mark.dickinson | 2009-11-15 12:31:13 +0000 (Sun, 15 Nov 2009) | 5 lines

  Avoid signed overflow in some xrange calculations, and extend
  xrange tests to cover some special cases that caused problems
  in py3k.  This is a partial backport of r76292-76293 (see
  issue #7298.)
........
2009-11-15 12:34:12 +00:00
Alexandre Vassalotti 602d8db2bc Added better pickling support to xrange objects.
Cleaned up the unit test.
2008-06-10 04:01:23 +00:00
Alexandre Vassalotti 1f2f61a78f Issue 2582: Fix pickling of xrange objects. 2008-06-10 03:34:53 +00:00
Gregory P. Smith dd96db63f6 This reverts r63675 based on the discussion in this thread:
http://mail.python.org/pipermail/python-dev/2008-June/079988.html

Python 2.6 should stick with PyString_* in its codebase.  The PyBytes_* names
in the spirit of 3.0 are available via a #define only.  See the email thread.
2008-06-09 04:58:54 +00:00
Christian Heimes 593daf545b Renamed PyString to PyBytes 2008-05-26 12:51:38 +00:00
Raymond Hettinger 0913166da2 Remove unnecessary modulo division.
The preceding test guarantees that 0 <= i < len.
2008-02-08 22:30:04 +00:00
Martin v. Löwis 72d206776d Remove "static forward" declaration. Move constructors
after the type objects.
2006-04-11 09:04:12 +00:00
Thomas Wouters f4d8f39053 Make xrange more Py_ssize_t aware, by assuming a Py_ssize_t is always at
least as big as a long. I believe this to be a safe assumption that is being
made in many parts of CPython, but a check could be added.

len(xrange(sys.maxint)) works now, so fix the testsuite's odd exception for
64-bit platforms too. It also fixes 'zip(xrange(sys.maxint), it)' as a
portable-ish (if expensive) alternative to enumerate(it); since zip() now
calls len(), this was breaking on (real) 64-bit platforms. No additional
test was added for that behaviour.
2006-04-04 17:28:12 +00:00
Georg Brandl 347b30042b Remove unnecessary casts in type object initializers. 2006-03-30 11:57:00 +00:00
Martin v. Löwis 18e165558b Merge ssize_t branch. 2006-02-15 17:27:45 +00:00
Armin Rigo f5b3e36493 Renamed _length_cue() to __length_hint__(). See:
http://mail.python.org/pipermail/python-dev/2006-February/060524.html
2006-02-11 21:32:43 +00:00
Raymond Hettinger 6b27cda643 Convert iterator __len__() methods to a private API. 2005-09-24 21:23:05 +00:00
Georg Brandl 02c42871cf Disallow keyword arguments for type constructors that don't use them.
(fixes bug #1119418)
2005-08-26 06:42:30 +00:00
Raymond Hettinger 665174834a Remove PyRange_New(). 2004-12-03 11:45:13 +00:00
Tim Peters feec4533e2 Bug 1003935: xrange overflows
Added XXX comment about why the undocumented PyRange_New() API function
is too broken to be worth the considerable pain of repairing.

Changed range_new() to stop using PyRange_New().  This fixes a variety
of bogus errors.  Nothing in the core uses PyRange_New() now.

Documented that xrange() is intended to be simple and fast, and that
CPython restricts its arguments, and length of its result sequence, to
native C longs.

Added some tests that failed before the patch, and repaired a test that
relied on a bogus OverflowError getting raised.
2004-08-08 07:17:39 +00:00
Tim Peters d976ab7caf Trimmed trailing whitespace. 2004-08-08 06:29:10 +00:00
Michael W. Hudson f8df9a89bc Add a missing decref. 2004-08-02 13:22:01 +00:00
Raymond Hettinger ef9bf4031a Tidied up the implementations of reversed (including the custom ones
for xrange and list objects).

* list.__reversed__ now checks the length of the sequence object before
  calling PyList_GET_ITEM() because the mutable could have changed length.

* all three implementations are now tranparent with respect to length and
  maintain the invariant len(it) == len(list(it)) even when the underlying
  sequence mutates.

* __builtin__.reversed() now frees the underlying sequence as soon
  as the iterator is exhausted.

* the code paths were rearranged so that the most common paths
  do not require a jump.
2004-03-10 10:10:42 +00:00
Raymond Hettinger 85c20a41df Implement and apply PEP 322, reverse iteration 2003-11-06 14:06:48 +00:00
Raymond Hettinger 1da1dbf458 Renamed PyObject_GenericGetIter to PyObject_SelfIter
to more accurately describe what the function does.

Suggested by Thomas Wouters.
2003-03-17 19:46:11 +00:00
Raymond Hettinger 0153826964 Created PyObject_GenericGetIter().
Factors out the common case of returning self.
2003-03-17 08:24:35 +00:00
Raymond Hettinger d2bef8256b Update comments about the performance of xrange(). 2002-12-11 07:14:03 +00:00
Raymond Hettinger 5ae8e01cc5 Restore attribute access so that the following work again:
dir(xrange(10))
   xrange(10).__getitem__(4)
2002-11-07 16:55:54 +00:00
Guido van Rossum d4774fb6ef Untested code for 64-bit platforms. range_length() is declared as int
but returns r->len which is a long.  This doesn't even cause a warning
on 32-bit platforms, but can return bogus values on 64-bit platforms
(and should cause a compiler warning).  Fix this by inserting a range
check when LONG_MAX != INT_MAX, and adding an explicit cast to (int)
when the test passes.  When r->len is out of range, PySequence_Size()
and hence len() will report an error (but an iterator will still
work).
2002-09-11 15:55:48 +00:00
Jeremy Hylton 938ace69a0 staticforward bites the dust.
The staticforward define was needed to support certain broken C
compilers (notably SCO ODT 3.0, perhaps early AIX as well) botched the
static keyword when it was used with a forward declaration of a static
initialized structure.  Standard C allows the forward declaration with
static, and we've decided to stop catering to broken C compilers.  (In
fact, we expect that the compilers are all fixed eight years later.)

I'm leaving staticforward and statichere defined in object.h as
static.  This is only for backwards compatibility with C extensions
that might still use it.

XXX I haven't updated the documentation.
2002-07-17 16:30:39 +00:00
Guido van Rossum 86d593e110 Remove the next() method -- one is supplied automatically by
PyType_Ready() because the tp_iternext slot is set.  Also removed the
redundant (and expensive!) call to raise StopIteration from
rangeiter_next().
2002-07-16 20:47:50 +00:00
Martin v. Löwis 14f8b4cfcb Patch #568124: Add doc string macros. 2002-06-13 20:33:02 +00:00
Neal Norwitz 56f46f8d8c Pyrangeiter_Type && range_iter should be static 2002-06-06 14:58:21 +00:00
Raymond Hettinger c4c453f5ae Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Also, added more regression tests to cover the new type and test its
conformity with range().
2002-06-05 23:12:45 +00:00
Raymond Hettinger 48165d40cb SF 564601 adding rangeiterobject to make xrange() iterate like range(). 2002-06-05 20:08:48 +00:00
Raymond Hettinger e53e7a2c7d Inverted test for small speedup 2002-06-04 18:45:50 +00:00
Martin v. Löwis e452659237 Patch #551410: Implement tp_getiter. 2002-05-08 08:49:27 +00:00
Fred Drake d9018323c0 Remove old deprecated features from the xrange object. 2002-05-02 19:56:55 +00:00
Fred Drake edb51bb7e8 Fix attribute access for the xrange objects. The tp_getattr and tp_getattro
handlers were both set, but were not compatible.  This change uses only the
tp_getattro handler with a more "modern" approach.
This fixes SF bug #551285.
2002-05-02 16:05:27 +00:00
Neil Schemenauer 9acae5a0a6 Remove PyMalloc_New and PyMalloc_Del. 2002-04-12 02:44:55 +00:00
Neil Schemenauer dcc819a5c9 Use pymalloc if it's enabled. 2002-03-22 15:33:15 +00:00
Neal Norwitz 2a47c0fa23 Fix spelling mistakes. Bugfix candidates. 2002-01-29 00:53:41 +00:00
Guido van Rossum 03b3f04542 long_mul(): The PyNumber_Multiply() call can return a long if the
result would overflow an int.  Check for this.  (SF bug #488482, Armin
Rigo.)
2001-12-04 16:36:39 +00:00
Barry Warsaw 7ce3694a52 repr's converted to using PyString_FromFormat() instead of sprintf'ing
into a hardcoded char* buffer.

Closes patch #454743.
2001-08-24 18:34:26 +00:00
Martin v. Löwis e3eb1f2b23 Patch #427190: Implement and use METH_NOARGS and METH_O. 2001-08-16 13:15:00 +00:00
Tim Peters 6d6c1a35e0 Merge of descr-branch back into trunk. 2001-08-02 04:15:00 +00:00
Thomas Wouters efafcea280 Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
on python-dev. The features will still vanish, however, just one release
later.
2001-07-09 12:30:54 +00:00
Guido van Rossum 3f56166b1a Rip out the fancy behaviors of xrange that nobody uses: repeat, slice,
contains, tolist(), and the start/stop/step attributes.  This includes
removing the 4th ('repeat') argument to PyRange_New().
2001-07-05 13:27:48 +00:00
Guido van Rossum 65e0b99b61 SF patch #103158 by Greg Ball: Don't do unsafe arithmetic in xrange
object.

This fixes potential overflows in xrange()'s internal calculations on
64-bit platforms.  The fix is complicated because the sq_length slot
function can only return an int; we want to support
xrange(sys.maxint), which is a 64-bit quantity on most 64-bit
platforms (except Win64).  The solution is hacky but the best
possible: when the range is that long, we can use it in a for loop but
we can't ask for its length (nor can we actually iterate beyond
2**31-1, because the sq_item slot function has the same restrictions
on its arguments.  Fixing those restrictions is a project for another
day...
2001-01-15 18:58:56 +00:00
Guido van Rossum 9e8f4ea0aa Test for NULL returned from PyObject_NEW(). 2000-12-14 14:59:53 +00:00
Fred Drake 0b796fa5c5 Fixed support for containment test when a negative step is used; this
*really* closes bug #121965.

Added three attributes to the xrange object: start, stop, and step.  These
are the same as for the slice objects.
2000-11-08 19:42:43 +00:00
Fred Drake a91e1650aa In the containment test, get the boundary condition right. ">" was used
where ">=" should have been.

This closes bug #121965.
2000-11-08 18:37:05 +00:00
Guido van Rossum 8586991099 REMOVED all CWI, CNRI and BeOpen copyright markings.
This should match the situation in the 1.6b1 tree.
2000-09-01 23:29:29 +00:00
Tim Peters 72d421b75c Boost buffer sizes in the absence of snprintf on Windows.
Ensure that # of args to sprintf always matches # of format specifiers.
2000-08-04 03:05:40 +00:00
Fred Drake c76e0e5679 snprintf() is not portable, so continue to use sprintf() until a portable
snprintf() is available.
2000-08-04 02:34:41 +00:00