make backends.TaskWarrior inherit from Backend

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

diff --git a/tasklib/backends.py b/tasklib/backends.py
index adfb9a460955f45bb037ee5bdfac1730ab7ec158..6c19b48588202df1858f34dc71c5d5889ea95a13 100644 (file)
--- a/tasklib/backends.py
+++ b/tasklib/backends.py
@@ -6,6 +6,7 @@ import os
 import re
 import six
 import subprocess
+import copy
 
 from .task import Task, TaskQuerySet
 from .filters import TaskWarriorFilter
@@ -80,7 +81,7 @@ class TaskWarriorException(Exception):
     pass
 
 
-class TaskWarrior(object):
+class TaskWarrior(Backend):
 
     VERSION_2_1_0 = six.u('2.1.0')
     VERSION_2_2_0 = six.u('2.2.0')
@@ -155,7 +156,7 @@ class TaskWarrior(object):
             else:
                 escaped_serialized_value = six.u("'{0}'").format(serialized_value)
 
-            format_default = lambda: six.u("{0}:{1}").format(field,
+            format_default = lambda task: six.u("{0}:{1}").format(field,
                                                       escaped_serialized_value)
 
             format_func = getattr(self, 'format_{0}'.format(field),
@@ -186,8 +187,8 @@ class TaskWarrior(object):
 
         old_dependencies = task._original_data.get('depends', set())
 
-        added = self['depends'] - old_dependencies
-        removed = old_dependencies - self['depends']
+        added = task['depends'] - old_dependencies
+        removed = old_dependencies - task['depends']
 
         # Removed dependencies need to be prefixed with '-'
         return 'depends:' + ','.join(
@@ -217,6 +218,8 @@ class TaskWarrior(object):
                              "datetime, its type is not supported: {}"
                              .format(type(value)))
 
+        return localized
+
     @property
     def filter_class(self):
         return TaskWarriorFilter