vardescriptor.java

来自「用Java实现的编译器。把源代码编译成SPARC汇编程序」· Java 代码 · 共 45 行

// $Id: VarDescriptor.java,v 1.6 2000/10/21 22:44:34 mdeeds Exp $

package java6035.tools.IR;

/**
 * VarDescriptor is the abstract class to represent variables. Students should
 * replace this class with one of their own.
 */

public abstract class VarDescriptor extends Descriptor
                                    implements Lhs, Rhs, Walkable
{
    /**
     * Creates a new VarDescriptor for the variable named @param name
     **/
    public VarDescriptor(String name)
    {
        super(name);
    }

    public String getNodeName()
    {
        return "var:"+name;
    }

    public int getNeighborCount()
    {
        return 0;
    }

    public Object getNeighbor(int index)
    {
        return null;
    }

    public String PPrint(int indent, boolean recursive)
    {
        String output = new String();
        for(int i=0;i<indent;i++) output += " ";
        
        output += "(var_descriptor " + name + ")\n";
        return output;
    }
}