ltrint.java

用Java实现的编译器。把源代码编译成SPARC汇编程序

/**
*This class is used for integer literals. 
*This class extends the Literal abstract class
**/
package CatDecaf.IR;
import CatDecaf.Utilities.*;
import parser.*;
import CatDecaf.Utilities.Debugger.*;
import java6035.tools.ASM.*;

public class LtrInt extends Literal{
    public String ltrIntStr_;
    public int ltrInt_;
    private boolean convertedFlag;
    public SPARCRegister reg;
    
    public int type;        
    public LtrInt(String intLtr){
    		type = sym.INT;    	
		ltrIntStr_ = intLtr;
		ltrInt_ = -1;
		convertedFlag = false;
		reg = null;
	}

    public LtrInt(int p1){
    		type = sym.INT;    	
		ltrIntStr_ = null;
		ltrInt_ = p1;
		convertedFlag = true;
		reg = null;
	}
    
	public int getType(){return type;}	
	public String getIntString(){return ltrIntStr_;}	
	public boolean noError(){return !(type==sym.ERROR_TYPE);}
	public boolean converted(){return convertedFlag;}
	public void convNum(int i){
		ltrIntStr_ = null;
		convertedFlag = true;
		ltrInt_ = i;
	}

	public SPARCRegister getReg(){
		return reg;
	}

	public void setReg(SPARCRegister r){
		reg=r;
		reg.status = 1;
	}
	public void releaseReg(){
		reg.status = 0;
		reg= null;
	}		
	
    public void accept(Visitor v){
		v.visit(this);
    }
}