Probably friendlier to make this one a lookahead

unicode-org · Jun 26, 2024 · 8620d05 · 8620d05
1 parent cde46bd
commit 8620d05
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/unicodetools/src/main/java/org/unicode/text/UCD/TestUnicodeInvariants.java b/unicodetools/src/main/java/org/unicode/text/UCD/TestUnicodeInvariants.java
@@ -713,9 +713,11 @@ private static String nextToken(ParsePosition pp, String text) {
 
     private static void expectToken(String token, ParsePosition pp, String text)
             throws ParseException {
-        if (!token.equals(nextToken(pp, text))) {
-            throw new BackwardParseException("Expected '" + token + "'", pp.getIndex());
+        ParsePosition next = new ParsePosition(pp.getIndex());
+        if (!token.equals(nextToken(next, text))) {
+            throw new ParseException("Expected '" + token + "'", pp.getIndex());
         }
+        pp.setIndex(next.getIndex());
     }
 
     private static PropertyPredicate getPropertyPredicate(ParsePosition pp, String line)