TertiaryExpression exp1 =null;

        AssignmentExpression expx =null;

          Expression prev=null; //Will tell the prvious expression added;

          AssignmentExpression addTo=null; //Will tell where to add

          expression =new AssignmentExpression(null,-1,null);

          addTo=expression;

        try {

            // C:\\Users\\line47\\workspace\\ObjCFYPA\\src\\com\\icona\\antlr\\main\\ObjectiveC.g:811:2: (exp1= conditional_expression (op= assignment_operator expx= assignment_expression )? )

            // C:\\Users\\line47\\workspace\\ObjCFYPA\\src\\com\\icona\\antlr\\main\\ObjectiveC.g:812:2: exp1= conditional_expression (op= assignment_operator expx= assignment_expression )?

            {

    // $ANTLR start "assignment_operator"

    // C:\\Users\\line47\\workspace\\ObjCFYPA\\src\\com\\icona\\antlr\\main\\ObjectiveC.g:833:1: assignment_operator returns [AssignmentSymbol symbol] : ( '=' | '*=' | '/=' | '%=' | '+=' | '-=' | '<<=' | '>>=' | '&=' | '^=' | '|=' );

    public final AssignmentSymbol assignment_operator() throws RecognitionException {

        try {

            // C:\\Users\\line47\\workspace\\ObjCFYPA\\src\\com\\icona\\antlr\\main\\ObjectiveC.g:835:2: ( '=' | '*=' | '/=' | '%=' | '+=' | '-=' | '<<=' | '>>=' | '&=' | '^=' | '|=' )

            int alt65=11;