LazyUUIDTaskSet: Add reverse operator implementations

[etc/taskwarrior.git] / tasklib / lazy.py

diff --git a/tasklib/lazy.py b/tasklib/lazy.py
index 04ccdf5216f7bee3f3b5c83d24b304c3e095bc22..d294341e13249426de073b6ae3bbad2cf010e505 100644 (file)
--- a/tasklib/lazy.py
+++ b/tasklib/lazy.py
@@ -105,21 +105,89 @@ class LazyUUIDTaskSet(object):
             yield LazyUUIDTask(self._tw, uuid)
 
     def __sub__(self, other):
-        return LazyUUIDTaskSet(self._tw,
-                               self._uuids - set(t['uuid'] for t in other))
+        return self.difference(other)
 
     def __isub__(self, other):
-        self._uuids -= set(t['uuid'] for t in other)
-        return self
+        return self.difference_update(other)
 
-    def __or__(self, other):
+    def __rsub__(self, other):
         return LazyUUIDTaskSet(self._tw,
-                               self._uuids | set(t['uuid'] for t in other))
+            set(t['uuid'] for t in other) - self._uuids)
+
+    def __or__(self, other):
+        return self.union(other)
 
     def __ior__(self, other):
+        return self.update(other)
+
+    def __ror__(self, other):
+        return self.union(other)
+
+    def __xor__(self, other):
+        return self.symmetric_difference(other)
+
+    def __ixor__(self, other):
+        return self.symmetric_difference_update(other)
+
+    def __rxor__(self, other):
+        return self.symmetric_difference(other)
+
+    def __le__(self, other):
+        return self.issubset(other)
+
+    def __ge__(self, other):
+        return self.issuperset(other)
+
+    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 intersection(self, other):
+        return LazyUUIDTaskSet(self._tw,
+            self._uuids & set(t['uuid'] for t in 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