HHH-19758 Don't reset lexer on SLL parse error

(cherry picked from commit 39ac255)

Author: beikov

hibernate-core/src/main/java/org/hibernate/metamodel/mapping/ordering/OrderByFragmentTranslator.java

@@ -73,8 +73,13 @@ private static OrderingParser.OrderByFragmentContext buildParseTree(String fragm
 			return parser.orderByFragment();
 		}
 		catch (ParseCancellationException e) {
+			// When resetting the parser, its CommonTokenStream will seek(0) i.e. restart emitting buffered tokens.
+			// This is enough when reusing the lexer and parser, and it would be wrong to also reset the lexer.
+			// Resetting the lexer causes it to hand out tokens again from the start, which will then append to the
+			// CommonTokenStream and cause a wrong parse
+			// lexer.reset();
+
 			// reset the input token stream and parser state
-			lexer.reset();
 			parser.reset();
 
 			// fall back to LL(k)-based parsing

hibernate-core/src/main/java/org/hibernate/query/hql/internal/StandardHqlTranslator.java

@@ -104,9 +104,14 @@ private HqlParser.StatementContext parseHql(String hql) {
 		try {
 			return hqlParser.statement();
 		}
-		catch ( ParseCancellationException e) {
+		catch (ParseCancellationException e) {
+			// When resetting the parser, its CommonTokenStream will seek(0) i.e. restart emitting buffered tokens.
+			// This is enough when reusing the lexer and parser, and it would be wrong to also reset the lexer.
+			// Resetting the lexer causes it to hand out tokens again from the start, which will then append to the
+			// CommonTokenStream and cause a wrong parse
+			// hqlLexer.reset();
+
 			// reset the input token stream and parser state
-			hqlLexer.reset();
 			hqlParser.reset();
 
 			// fall back to LL(k)-based parsing