identifier.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 identifiers. 
**/
package CatDecaf.IR;
import CatDecaf.Utilities.*;
import parser.*;
import CatDecaf.Utilities.Debugger.*;
import java6035.tools.ASM.*;

public class Identifier implements Visitable{
    public String identifier_;
    public int type;
    public boolean glbVarFlag;
    public int offset;
    public SPARCRegister reg;
    public boolean paramFlag;

/*
    public Identifier(String id){
		identifier_ = id;
		type = sym.NO_TYPE;
    }
    */
    public Identifier(String id, int typ){
		identifier_ = id;
		type = typ;
		offset = -1;
		glbVarFlag = false;
		reg = null;
		paramFlag = false;
    }

/*
    public Identifier(String id, int typ, int offsetValue){
		identifier_ = id;
		type = typ;
		offset = offsetValue;
		glbVarFlag = false;		
		reg = null;		
		paramFlag = false;
    }
*/
    /*
    public Identifier(String id, int typ, int offsetValue, boolean gv){
		identifier_ = id;
		type = typ;
		offset = offsetValue;
		glbVarFlag = gv;
		reg = null;		
		paramFlag = false;
    }
*/
    public Identifier(String id, int typ, int offsetValue, boolean gv, boolean param){
		identifier_ = id;
		type = typ;
		offset = offsetValue;
		glbVarFlag = gv;
		reg = null;		
		paramFlag = param;
    }    
	public int getType(){return type;}	
	public boolean noError(){return !(type==sym.ERROR_TYPE);}

	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);
    }
}