Commit Graph

26 Commits

Author SHA1 Message Date
Fred Drake fe82acc3b1 Fixed typo in docstring: "__ version__" --> "__version__" 1998-02-13 03:24:48 +00:00
Barry Warsaw abe2a457de Unpickler.load_inst(), Unpickler.load_obj(), Unpickler.load_build():
Fixed problems when unpickling in restricted execution environments.
These methods try to assign to an instance's __class__ attribute, or
access the instances __dict__, which are prohibited in REE.  For the
first two methods, I re-implemented the old behavior when assignment
to value.__class__ fails.

For the load_build() I also re-implemented the old behavior when
inst.__dict__.update() fails but this means that unpickling in REE is
semantically different than unpickling in unrestricted mode.
1998-01-26 22:47:35 +00:00
Guido van Rossum d1f4984a9b Jim Fulton writes:
The attached patch adds the following behavior to the handling
of REDUCE codes:

- A user-defined type may have a __reduce__ method that returns
  a string rather than a tuple, in which case the object is
  saved as a global object with a name given by the string returned
  by reduce.

  This was a feature added to cPickle a long time ago.


- User-defined types can now support unpickling without
  executing a constructor.

  The second value returned from '__reduce__' can now be None,
  rather than an argument tuple.  On unpickling, if the
  second value returned from '__reduce__' during pickling was
  None, then rather than calling the first value returned from
  '__reduce__', directly, the '__basicnew__' method of the
  first value returned from '__reduce__' is called without
  arguments.

I also got rid of a few of Chris' extra ()s, which he used
to make python ifs look like C ifs.
1997-12-10 23:40:18 +00:00
Guido van Rossum e680546894 Don't specify base 0 to string.atoi when unpickling integers in text
mode.  The pickler always uses base 10 so the default base should be
fine.  (The base gets us in trouble when there's no strop module, as
the atoi() in string.py only supports base 10.  This is for JPython.)
1997-12-10 19:36:41 +00:00
Guido van Rossum e467be6511 When instantiating a class with no arguments and where the class does
not define __getinitargs__, bypass the __init__ constructor
completely.  This uses the trick of instantiating an empty dummy class
and then changing inst.__class__ to the real class.  This is done in
two places: once for the INST and once for the OBJ format code.

Also replaced the much outdated long doc string with a short summary
of the module; the information of that doc string is already
incorporated in the library reference manual.
1997-12-05 19:42:42 +00:00
Guido van Rossum 4fb5b28dfc Three independent changes:
- Don't use "from copy_reg import *".

- Use cls.__module__ instead of calling whichobject(cls, cls.__name__);
  also try __module__ in whichmodule(), just in case.

- After calling save_reduce(), add the object to the memo.
1997-09-12 20:07:24 +00:00
Guido van Rossum d6ead328b3 *Semantic change*: when unpickling the instance variables of an
instance, use inst.__dict__.update(value) instead of a for loop with
setattr() over the value.keys().  This is more consistent (the
pickling doesn't use getattr() either but pickles inst.__dict__) and
avoids problems with instances that have a __setattr__ hook.

But it *is* a semantic change (because the setattr hook is no longer
used).  So beware!
1997-09-08 02:08:11 +00:00
Guido van Rossum 5ed5c4c364 Add the same _keep_alive patch (by Michael Scharff) that was added to
copy.deepcopy() a while ago.  Can't reproduce this but it doesn't
break anything and it looks like the code could have the same problem.
1997-09-03 00:23:54 +00:00
Guido van Rossum 8be9a11617 Restore two features of the original 1.4 pickle:
- which_module() search __main__ last;

- load_inst() no longer checks that the classname really refers to a class.
1997-04-25 19:52:29 +00:00
Guido van Rossum 5a56649e09 Remove Digital Creations copyright (Jim sez it's okay). 1997-04-11 22:31:56 +00:00
Guido van Rossum b72cf2d697 New version by Digital Creations, supports binary format compatible
with cPickle.
1997-04-09 17:32:51 +00:00
Guido van Rossum efd3a3a843 Implement find_class() without exec statement. 1997-03-14 04:21:10 +00:00
Guido van Rossum 36fc11e894 Compromise on test in find_class(): a user-defined function is okay,
but a built-in function is not.
1996-10-07 14:34:20 +00:00
Guido van Rossum abfd8064d8 This is the third time I check in this change :-(
Don't use assignments into inst.__dict__ to restore instance
variables; use setattr() instead.
1996-08-08 20:26:45 +00:00
Guido van Rossum 37a6f16d2e Slight update of doc string -- suggest default args for __init__, no
longer complain that __getinitargs__ is an ugly name.
1996-08-08 18:35:22 +00:00
Guido van Rossum c7c5e697c3 Optimizations and one intentional loophole by Jim Fulton.
The optimizations consist mostly of using local variables to cache
methods or instance variables used a lot (e.g. "self.write").

The loopholes allows marshalling extension types as long as they have
a __class__ attribute (in which case they may support the rest of the
class piclking protocol as well).  This allows pickling MESS extension
types.
1996-07-22 22:26:07 +00:00
Guido van Rossum 955c5d156d Set the base for atoi() and atol() to 0, since we're reading Python
numbers here, and so that atol() doesn't barf on the trailing 'L'.
Add a test case involving a long integer.
1996-05-15 22:49:57 +00:00
Guido van Rossum 7853647dd1 Don't atoi() the memo key.
Use atoi(), atol(), atof() instead of load_atomic for seed-up.
1996-04-12 13:36:27 +00:00
Guido van Rossum e0bfd50d76 correct typo (persis*ent) 1995-08-07 20:16:58 +00:00
Guido van Rossum f71c79bb85 test other name variable 1995-06-22 18:51:23 +00:00
Guido van Rossum 48aa82e2df correct typo in example 1995-04-10 11:34:46 +00:00
Guido van Rossum 0c891ce61a pickle classes; add format_version, load(s)/dump(s) shortcuts 1995-03-14 15:09:05 +00:00
Guido van Rossum 7849da8631 added PicklingError exception 1995-03-09 14:08:35 +00:00
Guido van Rossum 7b5430f2e8 raise EOFError when load() hits EOF, instead of KeyError 1995-03-04 22:25:21 +00:00
Guido van Rossum 256cbd7487 minute comment changes 1995-02-16 16:30:50 +00:00
Guido van Rossum a48061a580 shelve.py: database of persistent objects, on top of pickle.py and anydbm.py
pickle.py: new low-level persistency module (used to be called flatten)
dbmac.py: stupid dbm clone for the Mac
anydbm.py: generic dbm interface (should be extended to support gdbm)
1995-01-10 00:31:14 +00:00