1 files changed, 27 insertions, 0 deletions
diff --git a/grc/core/schema_checker/utils.py b/grc/core/schema_checker/utils.py
new file mode 100644
index 0000000000..a9cf4c0175
--- /dev/null
+++ b/grc/core/schema_checker/utils.py
@@ -0,0 +1,27 @@
+import collections
+
+import six
+
+Spec = collections.namedtuple('Spec', 'types required item_scheme')
+
+
+def expand(**kwargs):
+    def expand_spec(spec):
+        if not isinstance(spec, Spec):
+            types_ = spec if isinstance(spec, tuple) else (spec,)
+            spec = Spec(types=types_, required=False, item_scheme=None)
+        elif not isinstance(spec.types, tuple):
+            spec = Spec(types=(spec.types,), required=spec.required,
+                        item_scheme=spec.item_scheme)
+        return spec
+    return {key: expand_spec(value) for key, value in kwargs.items()}
+
+
+str_ = six.string_types
+
+
+class Message(collections.namedtuple('Message', 'path type message')):
+    fmt = '{path}: {type}: {message}'
+
+    def __str__(self):
+        return self.fmt.format(**self._asdict())