1 files changed, 0 insertions, 168 deletions
diff --git a/Demo/metaclasses/Enum.py b/Demo/metaclasses/Enum.py
deleted file mode 100644
index eb52d79..0000000
--- a/Demo/metaclasses/Enum.py
+++ /dev/null
@@ -1,168 +0,0 @@
-"""Enumeration metaclass.
-
-XXX This is very much a work in progress.
-
-"""
-
-import string
-
-class EnumMetaClass:
-    """Metaclass for enumeration.
-
-    To define your own enumeration, do something like
-
-    class Color(Enum):
-        red = 1
-        green = 2
-        blue = 3
-
-    Now, Color.red, Color.green and Color.blue behave totally
-    different: they are enumerated values, not integers.
-
-    Enumerations cannot be instantiated; however they can be
-    subclassed.
-
-    """
-
-    def __init__(self, name, bases, dict):
-        """Constructor -- create an enumeration.
-
-        Called at the end of the class statement.  The arguments are
-        the name of the new class, a tuple containing the base
-        classes, and a dictionary containing everything that was
-        entered in the class' namespace during execution of the class
-        statement.  In the above example, it would be {'red': 1,
-        'green': 2, 'blue': 3}.
-
-        """
-        for base in bases:
-            if base.__class__ is not EnumMetaClass:
-                raise TypeError("Enumeration base class must be enumeration")
-        bases = [x for x in bases if x is not Enum]
-        self.__name__ = name
-        self.__bases__ = bases
-        self.__dict = {}
-        for key, value in dict.items():
-            self.__dict[key] = EnumInstance(name, key, value)
-
-    def __getattr__(self, name):
-        """Return an enumeration value.
-
-        For example, Color.red returns the value corresponding to red.
-
-        XXX Perhaps the values should be created in the constructor?
-
-        This looks in the class dictionary and if it is not found
-        there asks the base classes.
-
-        The special attribute __members__ returns the list of names
-        defined in this class (it does not merge in the names defined
-        in base classes).
-
-        """
-        if name == '__members__':
-            return list(self.__dict.keys())
-
-        try:
-            return self.__dict[name]
-        except KeyError:
-            for base in self.__bases__:
-                try:
-                    return getattr(base, name)
-                except AttributeError:
-                    continue
-
-        raise AttributeError(name)
-
-    def __repr__(self):
-        s = self.__name__
-        if self.__bases__:
-            s = s + '(' + string.join([x.__name__ for x in self.__bases__], ", ") + ')'
-        if self.__dict:
-            list = []
-            for key, value in self.__dict.items():
-                list.append("%s: %s" % (key, int(value)))
-            s = "%s: {%s}" % (s, string.join(list, ", "))
-        return s
-
-
-class EnumInstance:
-    """Class to represent an enumeration value.
-
-    EnumInstance('Color', 'red', 12) prints as 'Color.red' and behaves
-    like the integer 12 when compared, but doesn't support arithmetic.
-
-    XXX Should it record the actual enumeration rather than just its
-    name?
-
-    """
-
-    def __init__(self, classname, enumname, value):
-        self.__classname = classname
-        self.__enumname = enumname
-        self.__value = value
-
-    def __int__(self):
-        return self.__value
-
-    def __repr__(self):
-        return "EnumInstance(%r, %r, %r)" % (self.__classname,
-                                             self.__enumname,
-                                             self.__value)
-
-    def __str__(self):
-        return "%s.%s" % (self.__classname, self.__enumname)
-
-    def __cmp__(self, other):
-        return cmp(self.__value, int(other))
-
-
-# Create the base class for enumerations.
-# It is an empty enumeration.
-Enum = EnumMetaClass("Enum", (), {})
-
-
-def _test():
-
-    class Color(Enum):
-        red = 1
-        green = 2
-        blue = 3
-
-    print(Color.red)
-    print(dir(Color))
-
-    print(Color.red == Color.red)
-    print(Color.red == Color.blue)
-    print(Color.red == 1)
-    print(Color.red == 2)
-
-    class ExtendedColor(Color):
-        white = 0
-        orange = 4
-        yellow = 5
-        purple = 6
-        black = 7
-
-    print(ExtendedColor.orange)
-    print(ExtendedColor.red)
-
-    print(Color.red == ExtendedColor.red)
-
-    class OtherColor(Enum):
-        white = 4
-        blue = 5
-
-    class MergedColor(Color, OtherColor):
-        pass
-
-    print(MergedColor.red)
-    print(MergedColor.white)
-
-    print(Color)
-    print(ExtendedColor)
-    print(OtherColor)
-    print(MergedColor)
-
-if __name__ == '__main__':
-    _test()