orstack.java~4~

Java源码

package AM.vm_impl.vm_data_structure;

import java.util.Stack;
import java.util.ArrayList;
import AM.vm_impl.util.Tracer;

/**
 * Created by IntelliJ IDEA. User: yellowicq Date: 2004-4-27 Time: 13:35:05
 * To change this template use File | Settings | File Templates.
 */

public class OrStack {
    private Stack opStack;
    private ArrayList localVars;

    public OrStack() {
    }

    public void Init() {
        opStack = new Stack();
        localVars = new ArrayList();
    }

    public void push(Object obj) {
        opStack.push(obj);
    }

    public void addLocalEntry(int index, Object obj) {
        localVars.add(index, obj);
    }

    public void setLocalEntry(int index, Object obj) {
        try {
            if (localVars.get(index) == null) {
                localVars.add(index, obj);
            }
            else
                localVars.set(index, obj);
        } catch (Exception e) {
            localVars.add(index, obj);
        }
    }

    public void removeLocalEntry(int index) {
        localVars.remove(index);
    }

    public Object getLocalEntry(int index) {
        Object tmpobj = localVars.get(index);
        return tmpobj;
    }

    public Object pop() {
        Object tmpobj = opStack.pop();
        return tmpobj;
    }


    public void traceOrStack() {
        Tracer.debug("Current opStack:[" + opStack.toString() + "]");
        Tracer.debug("Current localVars:[" + localVars.toString() + "]");
    }
}