@Override
        public String toString() {
            if (this.type == NUM) {
                return "NUM: " + this.value;
            } else if (this.type == CMD) {
                return "CMD: " + this.name;
            } else if (this.type == UNK) {
                return "UNK";
            } else if (this.type == EOF) {
                return "EOF";
            } else if (this.type == NAME) {
                return "NAME: " + this.name;
            } else if (this.type == CMD) {
                return "CMD: " + this.name;
            } else if (this.type == STR) {
                return "STR: (" + this.name;
            } else if (this.type == ARYB) {
                return "ARY [";
            } else if (this.type == ARYE) {
                return "ARY ]";
            } else {
                return "some kind of brace (" + this.type + ")";
            }
        }