only add new_children (marginally faster)

4 years ago · 89bd1e6abe
parent a4b5776208
commit 89bd1e6abe
1 changed files with 1 additions and 1 deletions
--- a/masque/pattern.py
+++ b/masque/pattern.py
@ -915,7 +915,7 @@ class Pattern:
        def get_children(pat: Pattern, memo: Set) -> Set:
            children = set(sp.pattern for sp in pat.subpatterns if sp.pattern is not None)
            new_children = children - memo
-            memo |= children
+            memo |= new_children

            for child_pat in new_children:
                memo |= get_children(child_pat, memo)