symbol.java

完成编译器的基本功能,并且有界面,简单好用

package compiler.pl0;

/**
 *　各种符号的编码
 */
public enum Symbol {
      nul, ident, number, plus, minus, times, slash,
      oddsym, eql, neq, lss, leq, gtr, geq, lparen, rparen,
      comma, semicolon, period, becomes,
      beginsym, endsym, ifsym, thensym, whilesym, writesym,
      readsym, dosym, callsym, constsym, varsym, procsym, elsesym
}