Prevent XPath from returning the same node multiple times in Python3

2019-09-04 15:53:02 -03:00 · 2019-09-04 15:53:02 -03:00 · f15a9f7628
parent ae2a689a68
commit f15a9f7628
1 changed files with 5 additions and 0 deletions
--- a/runtime/Python3/src/antlr4/xpath/XPath.py
+++ b/runtime/Python3/src/antlr4/xpath/XPath.py
@ -261,6 +261,11 @@ class XPath(object):
                    # e.g., //func/*/stat might have a token node for which
                    # we can't go looking for stat nodes.
                    matching = element.evaluate(node)
+
+                    # See issue antlr#370 - Prevents XPath from returning the 
+                    # same node multiple times
+                    matching = filter(lambda m: m not in work_next, matching)
+                    
                    work_next.extend(matching)
            work = work_next