Lines Matching full:subclass

29     # registered as a virtual subclass of anything.  It forces the
54     def register(cls, subclass):  argument
55         """Register a virtual subclass of an ABC.
57         Returns the subclass, to allow usage as a class decorator.
59         if not isinstance(subclass, type):
61         if issubclass(subclass, cls):
62             return subclass  # Already a subclass
63         # Subtle: test for cycles *after* testing for "already a subclass";
65         if issubclass(cls, subclass):
68         cls._abc_registry.add(subclass)
70         return subclass
95         subclass = instance.__class__
96         if subclass in cls._abc_cache:
99         if subtype is subclass:
102                 subclass in cls._abc_negative_cache):
104             # Fall back to the subclass check.
105             return cls.__subclasscheck__(subclass)
106         return any(cls.__subclasscheck__(c) for c in (subclass, subtype))
108     def __subclasscheck__(cls, subclass):  argument
109         """Override for issubclass(subclass, cls)."""
110         if not isinstance(subclass, type):
113         if subclass in cls._abc_cache:
120         elif subclass in cls._abc_negative_cache:
122         # Check the subclass hook
123         ok = cls.__subclasshook__(subclass)
127                 cls._abc_cache.add(subclass)
129                 cls._abc_negative_cache.add(subclass)
131         # Check if it's a direct subclass
132         if cls in getattr(subclass, '__mro__', ()):
133             cls._abc_cache.add(subclass)
135         # Check if it's a subclass of a registered class (recursive)
137             if issubclass(subclass, rcls):
138                 cls._abc_cache.add(subclass)
140         # Check if it's a subclass of a subclass (recursive)
142             if issubclass(subclass, scls):
143                 cls._abc_cache.add(subclass)
146         cls._abc_negative_cache.add(subclass)