X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/3543f3d0b841693af1923ddbaac440c767e914bd..97eff0b3747614feaf9522d1338106ac98978c40:/tasklib/lazy.py

diff --git a/tasklib/lazy.py b/tasklib/lazy.py
index c3feed5..3a03a33 100644
--- a/tasklib/lazy.py
+++ b/tasklib/lazy.py
@@ -32,16 +32,25 @@ class LazyUUIDTask(object):
         return getattr(self, name)
 
     def __eq__(self, other):
-        if other['uuid']:
+        if other and other['uuid']:
             # For saved Tasks, just define equality by equality of uuids
             return self['uuid'] == other['uuid']
 
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
     def __hash__(self):
         return self['uuid'].__hash__()
 
     def __repr__(self):
         return "LazyUUIDTask: {0}".format(self._uuid)
 
+    def __copy__(self):
+        return LazyUUIDTask(self._tw, self._uuid)
+
+    def __deepcopy__(self, memo):
+        return LazyUUIDTask(self._tw, self._uuid)
+
     @property
     def saved(self):
         """
@@ -49,6 +58,14 @@ class LazyUUIDTask(object):
         """
         return True
 
+    @property
+    def _modified_fields(self):
+        return set()
+
+    @property
+    def modified(self):
+        return False
+
     def replace(self):
         """
         Performs conversion to the regular Task object, referenced by the
@@ -110,18 +127,37 @@ class LazyUUIDTaskSet(object):
     def __isub__(self, other):
         return self.difference_update(other)
 
+    def __rsub__(self, other):
+        return LazyUUIDTaskSet(self._tw,
+                               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 __and__(self, other):
+        return self.intersection(other)
+
+    def __iand__(self, other):
+        return self.intersection_update(other)
+
+    def __rand__(self, other):
+        return self.intersection(other)
+
     def __le__(self, other):
         return self.issubset(other)
 
@@ -136,19 +172,19 @@ class LazyUUIDTaskSet(object):
 
     def union(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 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 difference(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 symmetric_difference(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 update(self, other):
         self._uuids |= set(t['uuid'] for t in other)