intype.java

用java写的一段PL0编译程序.用户可以在文本框内输入一段PL0代码

public class InType
{
	public static final byte LIT=0;
	public static final byte LOD=1;
	public static final byte STO=2;
	public static final byte CAL=3;
	public static final byte INT=4;
	public static final byte JMP=5;
	public static final byte JPC=6;
	public static final byte OPR=7;
	public static String get_instr(byte i)
	{
		if(i==0)
			return "LIT" ;
		else
			if(i==1)
				return "LOD";
		else
			if(i==2)
				return "STO";
		else
			if(i==3)
				return "CAL";
		else
			if(i==4)
				return "INT";
		else
			if(i==5)
				return "JMP";
		else
			if(i==6)
				return "JPC";
		else
			if(i==7)
				return "OPR";
		else
			return "ERR";
	}
}