1 files changed, 40 insertions, 0 deletions
diff --git a/game/python-extra/utils/dicts/limited_dict.py b/game/python-extra/utils/dicts/limited_dict.py
new file mode 100644
index 0000000..c690118
--- /dev/null
+++ b/game/python-extra/utils/dicts/limited_dict.py
@@ -0,0 +1,40 @@
+from collections import MutableMapping
+
+
+class LimitedDict(MutableMapping):
+    def __init__(self, args=None, **kwargs):
+        keys = kwargs.pop('keys', [])
+        self.__keys = keys
+
+        self.__data = {}
+
+        if args:
+            kwargs.update((key, val) for key, val in args)
+
+        for key, val in kwargs.items():
+            self[key] = val
+
+    def __setitem__(self, key, val):
+        if key not in self.__keys:
+            raise KeyError("Illegal key: {}".format(key))
+
+        self.__data[key] = val
+
+    def __getitem__(self, key):
+        return self.__data[key]
+
+    def __iter__(self):
+        return self.__data.__iter__()
+
+    def __delitem__(self, key):
+        del self.__data[key]
+
+    def __len__(self):
+        return len(self.__data)
+
+    def __repr__(self):
+        return "{}({}, {})".format(self.__class__.__name__, self.defined_keys, self.__data)
+
+    @property
+    def defined_keys(self):
+        return self.__keys