1 files changed, 39 insertions, 0 deletions
diff --git a/grc/core/blocks/_flags.py b/grc/core/blocks/_flags.py
new file mode 100644
index 0000000000..ffea2ad569
--- /dev/null
+++ b/grc/core/blocks/_flags.py
@@ -0,0 +1,39 @@
+# Copyright 2016 Free Software Foundation, Inc.
+# This file is part of GNU Radio
+#
+# GNU Radio Companion is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# GNU Radio Companion 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+
+from __future__ import absolute_import
+
+import six
+
+
+class Flags(six.text_type):
+
+    THROTTLE = 'throttle'
+    DISABLE_BYPASS = 'disable_bypass'
+    NEED_QT_GUI = 'need_qt_gui'
+    DEPRECATED = 'deprecated'
+    NOT_DSP = 'not_dsp'
+
+    def __getattr__(self, item):
+        return item in self
+
+    def __add__(self, other):
+        if not isinstance(other, six.string_types):
+            return NotImplemented
+        return self.__class__(str(self) + other)
+
+    __iadd__ = __add__