Bug 731779: Integrate the Add-on SDK loader and API libraries into Firefox (uplifting from addon-sdk a16bbd5772880b578a939eeb65102bca6560d494)

addon-sdk/source/python-lib/cuddlefish/bunch.py

@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Taken from Paver's paver.options module.
+
+class Bunch(dict):
+    """A dictionary that provides attribute-style access."""
+
+    def __repr__(self):
+        keys = self.keys()
+        keys.sort()
+        args = ', '.join(['%s=%r' % (key, self[key]) for key in keys])
+        return '%s(%s)' % (self.__class__.__name__, args)
+    
+    def __getitem__(self, key):
+        item = dict.__getitem__(self, key)
+        if callable(item):
+            return item()
+        return item
+
+    def __getattr__(self, name):
+        try:
+            return self[name]
+        except KeyError:
+            raise AttributeError(name)
+
+    __setattr__ = dict.__setitem__
+
+    def __delattr__(self, name):
+        try:
+            del self[name]
+        except KeyError:
+            raise AttributeError(name)