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ReadOnlyDictView: Add ReadOnlyDictView which allows read-only access to a given dict
authorTomas Babej <tomasbabej@gmail.com>
Sat, 7 Feb 2015 12:49:29 +0000 (13:49 +0100)
committerTomas Babej <tomasbabej@gmail.com>
Sat, 7 Feb 2015 12:49:29 +0000 (13:49 +0100)
tasklib/task.py

index 138ea7c51d5a3c49db29611e8d71c01991fa95fb..dc2746020e8a98bf62df91ceb4d35fd3bea1757a 100644 (file)
@@ -28,6 +28,40 @@ class TaskWarriorException(Exception):
     pass
 
 
     pass
 
 
+class ReadOnlyDictView(object):
+    """
+    Provides simplified read-only view upon dict object.
+    """
+
+    def __init__(self, viewed_dict):
+        self.viewed_dict = viewed_dict
+
+    def __getitem__(self, key):
+        return copy.deepcopy(self.viewed_dict.__getitem__(key))
+
+    def __contains__(self, k):
+        return self.viewed_dict.__contains__(k)
+
+    def __iter__(self):
+        for value in self.viewed_dict:
+            yield copy.deepcopy(value)
+
+    def __len__(self):
+        return len(self.viewed_dict)
+
+    def get(self, key, default=None):
+        return copy.deepcopy(self.viewed_dict.get(key, default))
+
+    def has_key(self, key):
+        return self.viewed_dict.has_key(key)
+
+    def items(self):
+        return [copy.deepcopy(v) for v in self.viewed_dict.items()]
+
+    def values(self):
+        return [copy.deepcopy(v) for v in self.viewed_dict.values()]
+
+
 class SerializingObject(object):
     """
     Common ancestor for TaskResource & TaskFilter, since they both
 class SerializingObject(object):
     """
     Common ancestor for TaskResource & TaskFilter, since they both