From 76ef07d9a8863b337a7aca651842f094472f867f Mon Sep 17 00:00:00 2001
From: Tomas Babej <tomasbabej@gmail.com>
Date: Thu, 24 Dec 2015 18:57:48 +0100
Subject: [PATCH] lazy: Provide full implementation of the set interface in
 LazyUUIDTaskSet

---
 tasklib/lazy.py | 50 +++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 44 insertions(+), 6 deletions(-)

diff --git a/tasklib/lazy.py b/tasklib/lazy.py
index 04ccdf5..1e13fc3 100644
--- a/tasklib/lazy.py
+++ b/tasklib/lazy.py
@@ -108,18 +108,56 @@ class LazyUUIDTaskSet(object):
         return LazyUUIDTaskSet(self._tw,
                                self._uuids - set(t['uuid'] for t in other))
 
-    def __isub__(self, other):
-        self._uuids -= set(t['uuid'] for t in other)
-        return self
+    def issubset(self, other):
+        return all([task in other for task in self])
+
+    def issuperset(self, other):
+        return all([task in self for task in other])
+
+    def union(self, other):
+        return LazyUUIDTaskSet(self._tw,
+            self._uuids | set(t['uuid'] for t in other))
 
-    def __or__(self, other):
+    def intersection(self, other):
         return LazyUUIDTaskSet(self._tw,
-                               self._uuids | set(t['uuid'] for t in other))
+            self._uuids & set(t['uuid'] for t in other))
 
-    def __ior__(self, other):
+    def difference(self, other):
+        return LazyUUIDTaskSet(self._tw,
+            self._uuids - set(t['uuid'] for t in other))
+
+    def symmetric_difference(self, other):
+        return LazyUUIDTaskSet(self._tw,
+            self._uuids ^ set(t['uuid'] for t in other))
+
+    def update(self, other):
         self._uuids |= set(t['uuid'] for t in other)
         return self
 
+    def intersection_update(self, other):
+        self._uuids &= set(t['uuid'] for t in other)
+        return self
+
+    def difference_update(self, other):
+        self._uuids -= set(t['uuid'] for t in other)
+        return self
+
+    def symmetric_difference_update(self, other):
+        self._uuids ^= set(t['uuid'] for t in other)
+        return self
+
+    def add(self, task):
+        self._uuids.add(task['uuid'])
+
+    def remove(self, task):
+        self._uuids.remove(task['uuid'])
+
+    def pop(self):
+        return self._uuids.pop()
+
+    def clear(self):
+        self._uuids.clear()
+
     def replace(self):
         """
         Performs conversion to the regular TaskQuerySet object, referenced by
-- 
2.39.5