word.java

Java编写的编译器前端

package lexer;		// File Word.java
public class Word extends Token {
	public String lexeme = "";
	public Word(String s, int tag) { super(tag); lexeme = s; }
	public String toString() { return lexeme; }
	public static final Word
		and = new Word( "&&", Tag.AND ), or = new Word( "||", Tag.OR ),
		eq  = new Word( "==", Tag.EQ  ), ne = new Word( "!=", Tag.NE ),
		le  = new Word( "<=", Tag.LE  ), ge = new Word( ">=", Tag.GE ),
		minus = new Word( "minus", Tag.MINUS ),
		True  = new Word( "true",  Tag.TRUE  ),
		False = new Word( "false", Tag.FALSE ),
		temp  = new Word( "t",     Tag.TEMP  );
}