anchor.diff:        case $7:
         case $8:
         case $9:
  -      case $dot:
           return _number();
           break;
   
  
positive.code:         rest: rest, keywordRest: keywordRest);
    }
  
    Expression _expression({bool until(), String untilName}) {
      if (until != null && until()) scanner.error("Expected expression.");
  
      List<Expression> commaExpressions;
  
negative.code:           if (first != null && first >= 0x80) {
              addSingleExpression(_identifierLike());
              break;
            } else {
              break loop;
            }
  