Lines Matching full:subclass

82     # registered as a virtual subclass of anything.  It forces the
105     def register(cls, subclass):  argument
106         """Register a virtual subclass of an ABC."""
107         if not isinstance(subclass, (type, types.ClassType)):
109         if issubclass(subclass, cls):
110             return  # Already a subclass
111         # Subtle: test for cycles *after* testing for "already a subclass";
113         if issubclass(cls, subclass):
116         cls._abc_registry.add(subclass)
131         subclass = getattr(instance, '__class__', None)
132         if subclass is not None and subclass in cls._abc_cache:
137             subtype = subclass
138         if subtype is subclass or subclass is None:
143             # Fall back to the subclass check.
145         return (cls.__subclasscheck__(subclass) or
148     def __subclasscheck__(cls, subclass):  argument
149         """Override for issubclass(subclass, cls)."""
151         if subclass in cls._abc_cache:
158         elif subclass in cls._abc_negative_cache:
160         # Check the subclass hook
161         ok = cls.__subclasshook__(subclass)
165                 cls._abc_cache.add(subclass)
167                 cls._abc_negative_cache.add(subclass)
169         # Check if it's a direct subclass
170         if cls in getattr(subclass, '__mro__', ()):
171             cls._abc_cache.add(subclass)
173         # Check if it's a subclass of a registered class (recursive)
175             if issubclass(subclass, rcls):
176                 cls._abc_cache.add(subclass)
178         # Check if it's a subclass of a subclass (recursive)
180             if issubclass(subclass, scls):
181                 cls._abc_cache.add(subclass)
184         cls._abc_negative_cache.add(subclass)