After a recent upgrade to 2.7.2, the generated parser will not run anymore.

Can someone shed some light on what I need to do now?

Notice that the ASTFactory seems to take a string
instead of a token. I guess it cannot find this
class though it is definitely in the class directory.


Thanks.

			

			Exception in thread "main" java.lang.IllegalArgumentException: Invalid class or can't make instance, IdentifierAST
			

			at antlr.ASTFactory.createUsingCtor(ASTFactory.java:251)
			

			at antlr.ASTFactory.create(ASTFactory.java:210)
			

			at mokan.compiler.KanParser.identifier(KanParser.java:446)
			

			at mokan.compiler.KanParser.packageDefinition(KanParser.java:299)
			

			at mokan.compiler.KanParser.compilationUnit(KanParser.java:185)
			

			at mokan.compiler.Type.parseFile(Type.java:311)
			

			at mokan.compiler.Kanc.doFile(Kanc.java:119)
			

			at mokan.compiler.Kanc.main(Kanc.java:83)
			

		

Below is the offending code before then after

			

			// $ANTLR 2.7.1a2: "kan.g" -> "KanParser.java"$
			

			...
			

			public final void identifier() throws RecognitionException, TokenStreamException {
			

			

			returnAST = null;
			

			ASTPair currentAST = new ASTPair();
			

			SymbolAST identifier_AST = null;
			

			

			SymbolAST tmp5_AST = null;
			

			if (inputState.guessing==0) {
			

			tmp5_AST = (SymbolAST)astFactory.create(LT(1));
			

			astFactory.addASTChild(currentAST, tmp5_AST);
			

			}
			

		

			

			

			// $ANTLR 2.7.2: "kan.g" -> "KanParser.java"$
			

			...
			

			protected final void identifier() throws RecognitionException, TokenStreamException {
			

			

			returnAST = null;
			

			ASTPair currentAST = new ASTPair();
			

			KanAST identifier_AST = null;
			

			Token  id = null;
			

			IdentifierAST id_AST = null;
			

			Token  d = null;
			

			IdentifierAST d_AST = null;
			

			Token  i = null;
			

			KanAST i_AST = null;
			

			StringBuffer buf = new StringBuffer();
			

			

			try {      // for error handling
			

			id = LT(1);
			

			id_AST = (IdentifierAST)astFactory.create(id,"IdentifierAST");
			

			astFactory.addASTChild(currentAST, id_AST);
			

			match(IDENT);
			

			if ( inputState.guessing==0 ) {
			

			buf.append(id_AST.getText());
			

			}