DateField/TimeField/Delta are not really a base object

weboob/capabilities/date.py

@@ -0,0 +1,58 @@
+# -*- coding: utf-8 -*-
+
+# Copyright(C) 2010-2013 Christophe Benz, Romain Bignon, Julien Hebert
+#
+# This file is part of weboob.
+#
+# weboob is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# weboob is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with weboob. If not, see <http://www.gnu.org/licenses/>.
+
+import datetime
+from weboob.tools.date import new_date, new_datetime
+from weboob.capabilities.base import Field
+
+
+__all__ = ['DateField', 'TimeField', 'DeltaField']
+
+class DateField(Field):
+    """
+    A field which accepts only :class:`datetime.date` and :class:`datetime.datetime` types.
+    """
+    def __init__(self, doc, **kwargs):
+        Field.__init__(self, doc, datetime.date, datetime.datetime, **kwargs)
+
+    def __setattr__(self, name, value):
+        if name == 'value':
+            # Force use of our date and datetime types, to fix bugs in python2
+            # with strftime on year<1900.
+            if type(value) is datetime.datetime:
+                value = new_datetime(value)
+            if type(value) is datetime.date:
+                value = new_date(value)
+        return object.__setattr__(self, name, value)
+
+
+class TimeField(Field):
+    """
+    A field which accepts only :class:`datetime.time` and :class:`datetime.time` types.
+    """
+    def __init__(self, doc, **kwargs):
+        Field.__init__(self, doc, datetime.time, datetime.datetime, **kwargs)
+
+
+class DeltaField(Field):
+    """
+    A field which accepts only :class:`datetime.timedelta` type.
+    """
+    def __init__(self, doc, **kwargs):
+        Field.__init__(self, doc, datetime.timedelta, **kwargs)