/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.dragome.callbackevictor.enhancers;
import java.io.Serializable;
import com.dragome.commons.ProxyRelatedInvocationHandler;
/**
* Stack to store the frame information along the invocation trace.
*/
public class Stack implements Serializable
{
private static final long serialVersionUID= 2L;
private int[] istack;
private float[] fstack;
private double[] dstack;
private long[] lstack;
private Object[] ostack;
private Object[] rstack;
private int iTop, fTop, dTop, lTop, oTop, rTop;
protected Runnable runnable;
public Stack(Runnable pRunnable)
{
istack= new int[10];
lstack= new long[5];
dstack= new double[5];
fstack= new float[5];
ostack= new Object[10];
rstack= new Object[5];
runnable= pRunnable;
}
public Stack(final Stack pParent)
{
istack= new int[pParent.istack.length];
lstack= new long[pParent.lstack.length];
dstack= new double[pParent.dstack.length];
fstack= new float[pParent.fstack.length];
ostack= new Object[pParent.ostack.length];
rstack= new Object[pParent.rstack.length];
iTop= pParent.iTop;
fTop= pParent.fTop;
dTop= pParent.dTop;
lTop= pParent.lTop;
oTop= pParent.oTop;
rTop= pParent.rTop;
System.arraycopy(pParent.istack, 0, istack, 0, iTop);
System.arraycopy(pParent.fstack, 0, fstack, 0, fTop);
System.arraycopy(pParent.dstack, 0, dstack, 0, dTop);
System.arraycopy(pParent.lstack, 0, lstack, 0, lTop);
System.arraycopy(pParent.ostack, 0, ostack, 0, oTop);
System.arraycopy(pParent.rstack, 0, rstack, 0, rTop);
runnable= pParent.runnable;
}
public boolean hasDouble()
{
return dTop > 0;
}
public double popDouble()
{
if (dTop == 0)
{
throw new EmptyStackException("pop double");
}
final double d= dstack[--dTop];
return d;
}
public boolean hasFloat()
{
return fTop > 0;
}
public float popFloat()
{
if (fTop == 0)
{
throw new EmptyStackException("pop float");
}
final float f= fstack[--fTop];
return f;
}
public boolean hasInt()
{
return iTop > 0;
}
public int popInt()
{
if (iTop == 0)
{
throw new EmptyStackException("pop int");
}
final int i= istack[--iTop];
return i;
}
public boolean hasLong()
{
return lTop > 0;
}
public long popLong()
{
if (lTop == 0)
{
throw new EmptyStackException("pop long");
}
final long l= lstack[--lTop];
return l;
}
public boolean hasObject()
{
return oTop > 0;
}
public Object popObject()
{
if (oTop == 0)
{
throw new EmptyStackException("pop object");
}
final Object o= ostack[--oTop];
ostack[oTop]= null; // avoid unnecessary reference to object
return o;
}
public boolean hasReference()
{
return rTop > 0;
}
public Object popReference()
{
if (rTop == 0)
{
throw new EmptyStackException("pop reference");
}
Object o= rstack[--rTop];
rstack[rTop]= null; // avoid unnecessary reference to object
//TODO arreglar este parche feo
if (o instanceof ProxyRelatedInvocationHandler)
{
ProxyRelatedInvocationHandler proxyRelatedInvocationHandler= (ProxyRelatedInvocationHandler) o;
if (!proxyRelatedInvocationHandler.isInvoked())
o= proxyRelatedInvocationHandler.getProxy();
proxyRelatedInvocationHandler.setInvoked(existsIn(rstack, proxyRelatedInvocationHandler));
}
return o;
}
private boolean existsIn(Object[] stack, Object o)
{
for (Object object : stack)
if (object == o)
return true;
return false;
}
public void pushDouble(double d)
{
if (dTop == dstack.length)
{
double[] hlp= new double[Math.max(8, dstack.length * 2)];
System.arraycopy(dstack, 0, hlp, 0, dstack.length);
dstack= hlp;
}
dstack[dTop++]= d;
}
public void pushFloat(float f)
{
if (fTop == fstack.length)
{
float[] hlp= new float[Math.max(8, fstack.length * 2)];
System.arraycopy(fstack, 0, hlp, 0, fstack.length);
fstack= hlp;
}
fstack[fTop++]= f;
}
public void pushInt(int i)
{
if (iTop == istack.length)
{
int[] hlp= new int[Math.max(8, istack.length * 2)];
System.arraycopy(istack, 0, hlp, 0, istack.length);
istack= hlp;
}
istack[iTop++]= i;
}
public void pushLong(long l)
{
if (lTop == lstack.length)
{
long[] hlp= new long[Math.max(8, lstack.length * 2)];
System.arraycopy(lstack, 0, hlp, 0, lstack.length);
lstack= hlp;
}
lstack[lTop++]= l;
}
public void pushObject(Object o)
{
// if (o instanceof ProxyRelatedInvocationHandler)
// {
// ProxyRelatedInvocationHandler proxyRelatedInvocationHandler= (ProxyRelatedInvocationHandler) o;
// o= proxyRelatedInvocationHandler.getProxy();
// }
if (oTop == ostack.length)
{
Object[] hlp= new Object[Math.max(8, ostack.length * 2)];
System.arraycopy(ostack, 0, hlp, 0, ostack.length);
ostack= hlp;
}
ostack[oTop++]= o;
}
public void replaceReference(Object o)
{
popReference();
pushReference(o);
}
public void pushReference(Object o)
{
// if (o instanceof ProxyRelatedInvocationHandler)
// {
// ProxyRelatedInvocationHandler proxyRelatedInvocationHandler= (ProxyRelatedInvocationHandler) o;
// o= proxyRelatedInvocationHandler.getProxy();
// }
if (rTop == rstack.length)
{
Object[] hlp= new Object[Math.max(8, rstack.length * 2)];
System.arraycopy(rstack, 0, hlp, 0, rstack.length);
rstack= hlp;
}
rstack[rTop++]= o;
}
public boolean isSerializable()
{
for (int i= 0; i < rTop; i++)
{
final Object r= rstack[i];
if (!(r instanceof Serializable))
{
return false;
}
}
for (int i= 0; i < oTop; i++)
{
final Object o= ostack[i];
if (!(o instanceof Serializable))
{
return false;
}
}
return true;
}
public boolean isEmpty()
{
return iTop == 0 && lTop == 0 && dTop == 0 && fTop == 0 && oTop == 0 && rTop == 0;
}
private String getStats()
{
final StringBuffer sb= new StringBuffer();
sb.append("i[").append(iTop).append("],");
sb.append("l[").append(lTop).append("],");
sb.append("d[").append(dTop).append("],");
sb.append("f[").append(fTop).append("],");
sb.append("o[").append(oTop).append("],");
sb.append("r[").append(rTop).append("]");
return sb.toString();
}
// private String getContent() {
// final StringBuffer sb = new StringBuffer();
// sb.append("i[").append(iTop).append("]\n");
// sb.append("l[").append(lTop).append("]\n");
// sb.append("d[").append(dTop).append("]\n");
// sb.append("f[").append(fTop).append("]\n");
// sb.append("o[").append(oTop).append("]\n");
// for(int i=0; i<oTop;i++) {
// sb.append(' ').append(i).append(": ");
// sb.append(ReflectionUtils.getClassName(ostack[i])).append('/').append(ReflectionUtils.getClassLoaderName(ostack[i]));
// sb.append('\n');
// }
// sb.append("r[").append(rTop).append("]\n");
// for(int i=0; i<rTop;i++) {
// sb.append(' ').append(i).append(": ");
// sb.append(ReflectionUtils.getClassName(rstack[i])).append('/').append(ReflectionUtils.getClassLoaderName(rstack[i]));
// sb.append('\n');
// }
//
// return sb.toString();
// }
// public String toString() {
// return getContent();
// }
// private void writeObject(ObjectOutputStream s) throws IOException {
// s.writeInt(iTop);
// for( int i=0; i<iTop; i++ ) {
// s.writeInt(istack[i]);
// }
//
// s.writeInt(lTop);
// for( int i=0; i<lTop; i++ ) {
// s.writeLong(lstack[i]);
// }
//
// s.writeInt(dTop);
// for( int i=0; i<dTop; i++ ) {
// s.writeDouble(dstack[i]);
// }
//
// s.writeInt(fTop);
// for( int i=0; i<fTop; i++ ) {
// s.writeDouble(fstack[i]);
// }
//
// s.writeInt(oTop);
// for( int i=0; i<oTop; i++ ) {
// s.writeObject(ostack[i]);
// }
//
// s.writeInt(rTop);
// for( int i=0; i<rTop; i++ ) {
// s.writeObject(rstack[i]);
// }
//
// s.writeObject(runnable);
// }
//
// private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
// iTop = s.readInt();
// istack = new int[iTop];
// for( int i=0; i<iTop; i++ ) {
// istack[i] = s.readInt();
// }
//
// lTop = s.readInt();
// lstack = new long[lTop];
// for( int i=0; i<lTop; i++ ) {
// lstack[i] = s.readLong();
// }
//
// dTop = s.readInt();
// dstack = new double[dTop];
// for( int i=0; i<dTop; i++ ) {
// dstack[i] = s.readDouble();
// }
//
// fTop = s.readInt();
// fstack = new float[fTop];
// for( int i=0; i<fTop; i++ ) {
// fstack[i] = s.readFloat();
// }
//
// oTop = s.readInt();
// ostack = new Object[oTop];
// for( int i=0; i<oTop; i++ ) {
// ostack[i] = s.readObject();
// }
//
// rTop = s.readInt();
// rstack = new Object[rTop];
// for( int i=0; i<rTop; i++ ) {
// rstack[i] = s.readObject();
// }
//
// runnable = (Runnable)s.readObject();
// }
}