instruction.java

JAVA的CMM编译器(词法+语法+语义+输出结果)

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package cmm;

/**
 *
 * @author lx
 */
public class Instruction {

    //目标代码的结构
    InsType ins;
    private int lev;
    private int a_i;
    private double a_r;
    
    private boolean flag = false; //为true时表示a为实数值
    
    /**
     *  Create a new instatnce of Instruction
     * @param i 目标代码指令
     * @param l 层
     * @param pa a值
     */
    public Instruction(InsType i, int l, int pa){
        ins = i;
        lev = l;
        a_i = pa;
    }
    
    /**
     *  Create a new instance of Instruction
     * 
     * @param i 目标代码指令
     * @param l 层
     * @param pa a值
     */
    public Instruction(InsType i, int l, double pa){
        ins = i;
        lev = l;
        a_r = pa;
        flag = true;
    }
    
    // 设置当前的虚拟机代码
    public void setIns(InsType i){
        ins = i;
    }
    
    // 返回当前虚拟机代码
    public InsType getIns(){
        return ins;
    }
    
    //设置当前层
    public void setLev(int l){
        lev = l;
    }
    
    // 返回当前层的值
    public int getLev(){
        return lev;
    }
    
    // 设置当前a的值
    public void setA(double pa){
        a_r = pa;
    }
     
    public void setA(int pa){
        a_i = pa;
    }
    
    // 返回当前a的值
    public int  getA_i(){
        return a_i;
    }
    
    public double getA_r(){
        return a_r;
    }
    
    //返回flag的值
    public boolean getFlag(){
        return flag;
    }
}