[pypy-svn] r8513 - pypy/dist/pypy/appspace
tismer at codespeak.net
tismer at codespeak.net
Mon Jan 24 11:14:30 CET 2005
Author: tismer
Date: Mon Jan 24 11:14:30 2005
New Revision: 8513
Removed:
pypy/dist/pypy/appspace/copy_reg.py
Modified:
pypy/dist/pypy/appspace/types.py
Log:
chanted types.py to make ClassType really different from type.
This makes appspace/copy_reg obsolete.
Deleted: /pypy/dist/pypy/appspace/copy_reg.py
==============================================================================
--- /pypy/dist/pypy/appspace/copy_reg.py Mon Jan 24 11:14:30 2005
+++ (empty file)
@@ -1,192 +0,0 @@
-"""Helper to provide extensibility for pickle/cPickle.
-
-!! This file has been copied practicaly verbatim from the CPython source.
-!! See http://www.python.org/2.3.2/license.html for licensing info.
-
-This is only useful to add pickle support for extension types defined in
-C, not for instances of user-defined classes.
-"""
-
-from types import ClassType as _ClassType
-
-__all__ = ["pickle", "constructor",
- "add_extension", "remove_extension", "clear_extension_cache"]
-
-dispatch_table = {}
-
-def pickle(ob_type, pickle_function, constructor_ob=None):
-## if type(ob_type) is _ClassType:
-## raise TypeError("copy_reg is not intended for use with classes")
-
- if not callable(pickle_function):
- raise TypeError("reduction functions must be callable")
- dispatch_table[ob_type] = pickle_function
-
- # The constructor_ob function is a vestige of safe for unpickling.
- # There is no reason for the caller to pass it anymore.
- if constructor_ob is not None:
- constructor(constructor_ob)
-
-def constructor(object):
- if not callable(object):
- raise TypeError("constructors must be callable")
-
-# Example: provide pickling support for complex numbers.
-
-try:
- complex
-except NameError:
- pass
-else:
-
- def pickle_complex(c):
- return complex, (c.real, c.imag)
-
- pickle(complex, pickle_complex, complex)
-
-# Support for pickling new-style objects
-
-def _reconstructor(cls, base, state):
- if base is object:
- obj = object.__new__(cls)
- else:
- obj = base.__new__(cls, state)
- base.__init__(obj, state)
- return obj
-
-_HEAPTYPE = 1<<9
-
-# Python code for object.__reduce_ex__ for protocols 0 and 1
-
-def _reduce_ex(self, proto):
- assert proto < 2
- for base in self.__class__.__mro__:
- if hasattr(base, '__flags__') and not base.__flags__ & _HEAPTYPE:
- break
- else:
- base = object # not really reachable
- if base is object:
- state = None
- else:
- if base is self.__class__:
- raise TypeError, "can't pickle %s objects" % base.__name__
- state = base(self)
- args = (self.__class__, base, state)
- try:
- getstate = self.__getstate__
- except AttributeError:
- if getattr(self, "__slots__", None):
- raise TypeError("a class that defines __slots__ without "
- "defining __getstate__ cannot be pickled")
- try:
- dict = self.__dict__
- except AttributeError:
- dict = None
- else:
- dict = getstate()
- if dict:
- return _reconstructor, args, dict
- else:
- return _reconstructor, args
-
-# Helper for __reduce_ex__ protocol 2
-
-def __newobj__(cls, *args):
- return cls.__new__(cls, *args)
-
-def _slotnames(cls):
- """Return a list of slot names for a given class.
-
- This needs to find slots defined by the class and its bases, so we
- can't simply return the __slots__ attribute. We must walk down
- the Method Resolution Order and concatenate the __slots__ of each
- class found there. (This assumes classes don't modify their
- __slots__ attribute to misrepresent their slots after the class is
- defined.)
- """
-
- # Get the value from a cache in the class if possible
- names = cls.__dict__.get("__slotnames__")
- if names is not None:
- return names
-
- # Not cached -- calculate the value
- names = []
- if not hasattr(cls, "__slots__"):
- # This class has no slots
- pass
- else:
- # Slots found -- gather slot names from all base classes
- for c in cls.__mro__:
- if "__slots__" in c.__dict__:
- names += [name for name in c.__dict__["__slots__"]
- if name not in ("__dict__", "__weakref__")]
-
- # Cache the outcome in the class if at all possible
- try:
- cls.__slotnames__ = names
- except:
- pass # But don't die if we can't
-
- return names
-
-# A registry of extension codes. This is an ad-hoc compression
-# mechanism. Whenever a global reference to <module>, <name> is about
-# to be pickled, the (<module>, <name>) tuple is looked up here to see
-# if it is a registered extension code for it. Extension codes are
-# universal, so that the meaning of a pickle does not depend on
-# context. (There are also some codes reserved for local use that
-# don't have this restriction.) Codes are positive ints; 0 is
-# reserved.
-
-_extension_registry = {} # key -> code
-_inverted_registry = {} # code -> key
-_extension_cache = {} # code -> object
-# Don't ever rebind those names: cPickle grabs a reference to them when
-# it's initialized, and won't see a rebinding.
-
-def add_extension(module, name, code):
- """Register an extension code."""
- code = int(code)
- if not 1 <= code <= 0x7fffffff:
- raise ValueError, "code out of range"
- key = (module, name)
- if (_extension_registry.get(key) == code and
- _inverted_registry.get(code) == key):
- return # Redundant registrations are benign
- if key in _extension_registry:
- raise ValueError("key %s is already registered with code %s" %
- (key, _extension_registry[key]))
- if code in _inverted_registry:
- raise ValueError("code %s is already in use for key %s" %
- (code, _inverted_registry[code]))
- _extension_registry[key] = code
- _inverted_registry[code] = key
-
-def remove_extension(module, name, code):
- """Unregister an extension code. For testing only."""
- key = (module, name)
- if (_extension_registry.get(key) != code or
- _inverted_registry.get(code) != key):
- raise ValueError("key %s is not registered with code %s" %
- (key, code))
- del _extension_registry[key]
- del _inverted_registry[code]
- if code in _extension_cache:
- del _extension_cache[code]
-
-def clear_extension_cache():
- _extension_cache.clear()
-
-# Standard extension code assignments
-
-# Reserved ranges
-
-# First Last Count Purpose
-# 1 127 127 Reserved for Python standard library
-# 128 191 64 Reserved for Zope
-# 192 239 48 Reserved for 3rd parties
-# 240 255 16 Reserved for private use (will never be assigned)
-# 256 Inf Inf Reserved for future assignment
-
-# Extension codes are assigned by the Python Software Foundation.
Modified: pypy/dist/pypy/appspace/types.py
==============================================================================
--- pypy/dist/pypy/appspace/types.py (original)
+++ pypy/dist/pypy/appspace/types.py Mon Jan 24 11:14:30 2005
@@ -69,9 +69,14 @@
pass
del g
+# checking whether we can make copy_reg happy
+##class _C:
+## def _m(self): pass
+##ClassType = type(_C)
+class ClassType: pass
class _C:
- def _m(self): pass
-ClassType = type(_C)
+ def _m(self):pass
+## end of testing hack
try:
UnboundMethodType = type(_C._m) # Same as MethodType
except AttributeError:
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