1 files changed, 45 insertions, 0 deletions
diff --git a/python/associateddatastore.py b/python/associateddatastore.py
new file mode 100644
index 00000000..6b5e688e
--- /dev/null
+++ b/python/associateddatastore.py
@@ -0,0 +1,45 @@
+# Copyright (c) 2015-2016 Vector 35 LLC
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+import copy
+
+
+class _AssociatedDataStore(dict):
+	_defaults = {}
+
+	@classmethod
+	def set_default(cls, name, value):
+		cls._defaults[name] = value
+
+	def __getattr__(self, name):
+		if name in self.__dict__:
+			return self.__dict__[name]
+		if name not in self:
+			if name in self.__class__._defaults:
+				result = copy.copy(self.__class__._defaults[name])
+				self[name] = result
+				return result
+		return self.__getitem__(name)
+
+	def __setattr__(self, name, value):
+		self.__setitem__(name, value)
+
+	def __delattr__(self, name):
+		self.__delitem__(name)