both MWT and Node should have property words

Author: martinpopel

udapi/block/write/vislcg.py

@@ -64,10 +64,7 @@ def process_tree(self, tree):
         # Print the line with forms and optional upos tags and feats.
         for token in tree.token_descendants:
             print('"<%s>"' % self._escape(token.form))
-            try:
-                words = token.words
-            except AttributeError:
-                words = [token]
+            words = token.words
             print('\t' + self._node(words[0]))
             for nonfirst_mwt_word in words[1:]:
                 print('\t\t' + self._node(nonfirst_mwt_word))

udapi/core/node.py

@@ -884,6 +884,18 @@ def multiword_token(self):
         """
         return self._mwt
 
+    @property
+    def words(self):
+        """Return one-item list with this node.
+
+        This property is there for compatibility with udapi.core.mwt.MWT.words.
+        So that it is possible to use code such as:
+          for token in root.token_descendants:
+            words = token.words
+            ...
+        """
+        return [self]
+
     def is_nonprojective(self):
         """Is the node attached to its parent non-projectively?