class TOK{
public final static int plus = 0; //演算子+
public final static int minus = 1; //演算子-
public final static int mul = 2; //演算子*
public final static int div = 3; //演算子/
public final static int mod = 4; //演算子%
public final static int u_plus = 5; //単項演算子+
public final static int u_minus = 6; //単項演算子-
public final static int constant = 7; //定数
public final static int lparen = 8; //右括弧
public final static int rparen = 9; //左括弧
public final static int id = 10; //変数
public final static int assign = 11; //演算子=(代入)
public final static int END = 12; //式の終わり
}