/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.vm.trace;
import org.ethereum.vm.DataWord;
import org.ethereum.vm.program.listener.ProgramListenerAdaptor;
public class ProgramTraceListener extends ProgramListenerAdaptor {
private final boolean enabled;
private OpActions actions = new OpActions();
public ProgramTraceListener(boolean enabled) {
this.enabled = enabled;
}
@Override
public void onMemoryExtend(int delta) {
if (enabled) actions.addMemoryExtend(delta);
}
@Override
public void onMemoryWrite(int address, byte[] data, int size) {
if (enabled) actions.addMemoryWrite(address, data, size);
}
@Override
public void onStackPop() {
if (enabled) actions.addStackPop();
}
@Override
public void onStackPush(DataWord value) {
if (enabled) actions.addStackPush(value);
}
@Override
public void onStackSwap(int from, int to) {
if (enabled) actions.addStackSwap(from, to);
}
@Override
public void onStoragePut(DataWord key, DataWord value) {
if (enabled) {
if (value.equals(DataWord.ZERO)) {
actions.addStorageRemove(key);
} else {
actions.addStoragePut(key, value);
}
}
}
@Override
public void onStorageClear() {
if (enabled) actions.addStorageClear();
}
public OpActions resetActions() {
OpActions actions = this.actions;
this.actions = new OpActions();
return actions;
}
}