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| author |   Armin Rigo <arigo@tunes.org> | 2013-02-07 11:45:51 +0100 |
|---|---|---|
| committer | Armin Rigo <arigo@tunes.org> | 2013-02-07 11:45:51 +0100 |
| commit | 7d0885e4e0665fca95d80bed4b38aba013b7be7d (patch) | |
| tree | f33791bcc09ee14016abe5689fcc6923d03a697d /lib_pypy/cPickle.py | |
| parent | this should always import lib_pypy's sqlite3, never the host's (diff) | |
| download | pypy-7d0885e4e0665fca95d80bed4b38aba013b7be7d.tar.gz pypy-7d0885e4e0665fca95d80bed4b38aba013b7be7d.tar.bz2 pypy-7d0885e4e0665fca95d80bed4b38aba013b7be7d.zip | |
Try to hide another small difference between pickle and cPickle.
Diffstat (limited to 'lib_pypy/cPickle.py')
| -rw-r--r-- | lib_pypy/cPickle.py | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib_pypy/cPickle.py b/lib_pypy/cPickle.py index dc11873a8f..c99d6ad58d 100644 --- a/lib_pypy/cPickle.py +++ b/lib_pypy/cPickle.py @@ -1,5 +1,5 @@ # -# One-liner implementation of cPickle +# Reimplementation of cPickle, mostly as a copy of pickle.py # from pickle import Pickler, dump, dumps, PickleError, PicklingError, UnpicklingError, _EmptyClass @@ -131,6 +131,13 @@ mloads = marshal.loads # Unpickling machinery +class _Stack(list): + def pop(self, index=-1): + try: + return list.pop(self, index) + except IndexError: + raise UnpicklingError("unpickling stack underflow") + class Unpickler(object): def __init__(self, file): @@ -155,7 +162,7 @@ class Unpickler(object): Return the reconstituted object hierarchy specified in the file. """ self.mark = object() # any new unique object - self.stack = [] + self.stack = _Stack() self.append = self.stack.append try: key = ord(self.read(1)) |