Warn if 'ref' is not a sha1, assuming 'sha' is not provided

1 files changed, 8 insertions, 3 deletions

diff --git a/ybd/morphs.py b/ybd/morphs.py
index fe021ec..8364da1 100644
--- a/ybd/morphs.py
+++ b/ybd/morphs.py
@@ -215,9 +215,14 @@ class Morphs(object):
                         'WARNING: multiple definitions of %s \n' % key,
                         '%s | %s' % (dn.get(key), new_def[key]), exit=exit)
 
-        if new_def.get('sha'):
-            if len(new_def['sha']) != 40:
-                log(new_def, 'ERROR: invalid sha:', new_def['sha'], exit=True)
+        sha = new_def.get('sha')
+        if sha:
+            if len(sha) != 40:
+                log(new_def, 'ERROR: invalid sha:', sha, exit=True)
+        if new_def.get('ref'):
+            if not sha and len(new_def['ref']) != 40:
+                log(new_def, 'WARNING: ref is not a sha:', new_def['ref'],
+                    exit=False)
 
         if dn is None:
             self._data[new_def['path']] = new_def