remove old metaclass demos

1 files changed, 0 insertions, 118 deletions

diff --git a/Demo/metaclasses/Meta.py b/Demo/metaclasses/Meta.py
deleted file mode 100644
index 90bfd97..0000000
--- a/Demo/metaclasses/Meta.py
+++ /dev/null
@@ -1,118 +0,0 @@
-"""Generic metaclass.
-
-XXX This is very much a work in progress.
-
-"""
-
-import types
-
-class MetaMethodWrapper:
-
-    def __init__(self, func, inst):
-        self.func = func
-        self.inst = inst
-        self.__name__ = self.func.__name__
-
-    def __call__(self, *args, **kw):
-        return self.func(self.inst, *args, **kw)
-
-class MetaHelper:
-
-    __methodwrapper__ = MetaMethodWrapper # For derived helpers to override
-
-    def __helperinit__(self, formalclass):
-        self.__formalclass__ = formalclass
-
-    def __getattr__(self, name):
-        # Invoked for any attr not in the instance's __dict__
-        try:
-            raw = self.__formalclass__.__getattr__(name)
-        except AttributeError:
-            try:
-                ga = self.__formalclass__.__getattr__('__usergetattr__')
-            except (KeyError, AttributeError):
-                raise AttributeError(name)
-            return ga(self, name)
-        if type(raw) != types.FunctionType:
-            return raw
-        return self.__methodwrapper__(raw, self)
-
-class MetaClass:
-
-    """A generic metaclass.
-
-    This can be subclassed to implement various kinds of meta-behavior.
-
-    """
-
-    __helper__ = MetaHelper             # For derived metaclasses to override
-
-    __inited = 0
-
-    def __init__(self, name, bases, dict):
-        try:
-            ga = dict['__getattr__']
-        except KeyError:
-            pass
-        else:
-            dict['__usergetattr__'] = ga
-            del dict['__getattr__']
-        self.__name__ = name
-        self.__bases__ = bases
-        self.__realdict__ = dict
-        self.__inited = 1
-
-    def __getattr__(self, name):
-        try:
-            return self.__realdict__[name]
-        except KeyError:
-            for base in self.__bases__:
-                try:
-                    return base.__getattr__(name)
-                except AttributeError:
-                    pass
-            raise AttributeError(name)
-
-    def __setattr__(self, name, value):
-        if not self.__inited:
-            self.__dict__[name] = value
-        else:
-            self.__realdict__[name] = value
-
-    def __call__(self, *args, **kw):
-        inst = self.__helper__()
-        inst.__helperinit__(self)
-        try:
-            init = inst.__getattr__('__init__')
-        except AttributeError:
-            init = lambda: None
-        init(*args, **kw)
-        return inst
-
-
-Meta = MetaClass('Meta', (), {})
-
-
-def _test():
-    class C(Meta):
-        def __init__(self, *args):
-            print("__init__, args =", args)
-        def m1(self, x):
-            print("m1(x=%r)" % (x,))
-    print(C)
-    x = C()
-    print(x)
-    x.m1(12)
-    class D(C):
-        def __getattr__(self, name):
-            if name[:2] == '__': raise AttributeError(name)
-            return "getattr:%s" % name
-    x = D()
-    print(x.foo)
-    print(x._foo)
-##     print x.__foo
-##     print x.__foo__
-
-
-if __name__ == '__main__':
-    _test()