itokentypes.java

编译器中的词法分析

package cmm.cmmcc;

/**
 * 单词类型接口
 * @author Huang Xuanxing
 *
 */
public interface ITokenTypes {
	
	public final int EOF = 0; //文件的结束符号
	public final int CONST = 1; // const
	public final int COMMA = 2; // ,
	public final int SEMI = 3; // ;
	public final int SQUAT = 4; // '
	public final int DQUAT = 5; // "
	public final int LPAR = 6; // (
	public final int RPAR = 7; // )
	public final int LSQU = 8; // [
	public final int RSQU = 9; // ]
	public final int LBRA = 10; // {
	public final int RBRA = 11; // }
	
	public final int ADD = 12; // +
	public final int MIN = 13; // -
	public final int MULT = 14; // *
	public final int DIV = 15; // /
	public final int EVAL = 16; // =
	public final int EQUA = 17; // ==
	public final int NEQUA = 18; // !=
	public final int LESS = 19; // <
	public final int GRTR = 20; // >
	public final int ELESS = 21; // <=
	public final int EGRTR = 22; // >=
	public final int NOT = 23; // !
	public final int AND = 24; // &
	public final int OR = 25; // |
	public final int DEC = 48; // #
	
	public final int CHAR = 28; // char
	public final int STRING = 29; // string
	public final int BOOL = 30; // bool
	public final int INT = 31; // int
	public final int REAL = 32; // real
	public final int IF = 33; // if
	public final int ELSE = 34; // else
	public final int WHILE = 35; // while
	public final int BREAK = 36; // break
	public final int CONTINUE = 37; // continue
	public final int RETURN = 38; // return
	public final int WRITE = 39; // write
	public final int READ = 40; // read
	public final int WRITELN = 41; // writeln
	public final int VOID = 42; // void
		
	public final int REMARK = 99;//注释内容//  /*...*/
	public final int INVALIDNUM = 101;//非法数字形式
	public final int INVALIDID = 102;//错误的标识符
	public final int INVALIDCHAR = 103;//错误的单字符形式
	public final int INVALIDSTRING = 104;//错误的字符串
	//public final int = 105;//非法
	
	/**
	 * L: a..z|A..Z 字母
	 * D: 0..9 数字
	 * UZ: 1..9 非零数字
	 * Z: 0 零
	 */
	public final int ID = 43; // L(L|D)*
	
	
	public final int VCHAR = 44; // '?'|'\?')
	public final int VSTRING = 45; // "*"
	public final int VINT = 46; // (+|-)?Z|UZ(D)*
	public final int VREAL = 47; // (+|-)?UZ(D)*|Z.(D)+

}