/*
* Copyright (C) 2010-2016 JPEXS, All rights reserved.
*
* This 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 3.0 of the License, or (at your option) any later version.
*
* This 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 this library.
*/
package com.jpexs.decompiler.flash.action.swf4;
import com.jpexs.decompiler.flash.BaseLocalData;
import com.jpexs.decompiler.flash.action.Action;
import com.jpexs.decompiler.flash.action.LocalDataArea;
import com.jpexs.decompiler.flash.action.StoreTypeAction;
import com.jpexs.decompiler.flash.action.model.ConstantPool;
import com.jpexs.decompiler.flash.action.model.DecrementActionItem;
import com.jpexs.decompiler.flash.action.model.DirectValueActionItem;
import com.jpexs.decompiler.flash.action.model.GetVariableActionItem;
import com.jpexs.decompiler.flash.action.model.IncrementActionItem;
import com.jpexs.decompiler.flash.action.model.PostDecrementActionItem;
import com.jpexs.decompiler.flash.action.model.PostIncrementActionItem;
import com.jpexs.decompiler.flash.action.model.SetVariableActionItem;
import com.jpexs.decompiler.flash.action.model.StoreRegisterActionItem;
import com.jpexs.decompiler.flash.action.model.TemporaryRegister;
import com.jpexs.decompiler.flash.action.model.operations.PreDecrementActionItem;
import com.jpexs.decompiler.flash.action.model.operations.PreIncrementActionItem;
import com.jpexs.decompiler.flash.ecma.EcmaScript;
import com.jpexs.decompiler.flash.types.annotations.SWFVersion;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.TranslateStack;
import com.jpexs.decompiler.graph.model.LocalData;
import java.util.HashMap;
import java.util.List;
/**
*
* @author JPEXS
*/
@SWFVersion(from = 4)
public class ActionSetVariable extends Action implements StoreTypeAction {
public ActionSetVariable() {
super(0x1D, 0);
}
@Override
public String toString() {
return "SetVariable";
}
@Override
public boolean execute(LocalDataArea lda) {
if (lda.stack.size() < 2) {
return false;
}
Object value = lda.pop();
lda.localVariables.put(EcmaScript.toString(lda.pop()), value);
return true;
}
@Override
public void translate(GraphSourceItem lineStartAction, TranslateStack stack, List<GraphTargetItem> output, HashMap<Integer, String> regNames, HashMap<String, GraphTargetItem> variables, HashMap<String, GraphTargetItem> functions, int staticOperation, String path) {
GraphTargetItem value = stack.pop().getThroughDuplicate();
GraphTargetItem name = stack.pop();
String nameStr;
if (name instanceof DirectValueActionItem) {
nameStr = name.toStringNoQuotes(LocalData.empty);
} else {
nameStr = EcmaScript.toString(name.getResult());
}
variables.put(nameStr, value);
if (value instanceof IncrementActionItem) {
GraphTargetItem obj = ((IncrementActionItem) value).object;
if (!stack.isEmpty() && stack.peek().valueEquals(obj)) {
stack.pop();
stack.push(new PostIncrementActionItem(this, lineStartAction, obj));
return;
}
}
if (value instanceof DecrementActionItem) {
GraphTargetItem obj = ((DecrementActionItem) value).object;
if (!stack.isEmpty() && stack.peek().valueEquals(obj)) {
stack.pop();
stack.push(new PostDecrementActionItem(this, lineStartAction, obj));
return;
}
}
if (value instanceof IncrementActionItem) {
if (((IncrementActionItem) value).object instanceof GetVariableActionItem) {
if (((GetVariableActionItem) ((IncrementActionItem) value).object).name.valueEquals(name)) {
output.add(new PostIncrementActionItem(this, lineStartAction, ((IncrementActionItem) value).object));
return;
}
}
}
if (value instanceof DecrementActionItem) {
if (((DecrementActionItem) value).object instanceof GetVariableActionItem) {
if (((GetVariableActionItem) ((DecrementActionItem) value).object).name.valueEquals(name)) {
output.add(new PostDecrementActionItem(this, lineStartAction, ((DecrementActionItem) value).object));
return;
}
}
}
GraphTargetItem ret = new SetVariableActionItem(this, lineStartAction, name, value);
if (value instanceof StoreRegisterActionItem) {
StoreRegisterActionItem sr = (StoreRegisterActionItem) value;
if (sr.define) {
value = sr.getValue();
((SetVariableActionItem) ret).setValue(value);
if (value instanceof IncrementActionItem) {
if (((IncrementActionItem) value).object instanceof GetVariableActionItem) {
if (((GetVariableActionItem) ((IncrementActionItem) value).object).name.valueEquals(name)) {
ret = new PreIncrementActionItem(this, lineStartAction, ((IncrementActionItem) value).object);
}
}
} else if (value instanceof DecrementActionItem) {
if (((DecrementActionItem) value).object instanceof GetVariableActionItem) {
if (((GetVariableActionItem) ((DecrementActionItem) value).object).name.valueEquals(name)) {
ret = new PreDecrementActionItem(this, lineStartAction, ((DecrementActionItem) value).object);
}
}
} else {
sr.temporary = true;
((SetVariableActionItem) ret).setValue(sr);
}
variables.put("__register" + sr.register.number, new TemporaryRegister(sr.register.number, ret));
return;
}
}
output.add(ret);
}
@Override
public int getStackPopCount(BaseLocalData localData, TranslateStack stack) {
return 2;
}
@Override
public String getVariableName(TranslateStack stack, ConstantPool cpool) {
if (stack.size() < 2) {
return null;
}
return stack.get(stack.size() - 2).toStringNoQuotes(LocalData.create(cpool));
}
}