/*
* 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.model.DirectValueActionItem;
import com.jpexs.decompiler.flash.action.model.EvalActionItem;
import com.jpexs.decompiler.flash.action.model.GetVariableActionItem;
import com.jpexs.decompiler.flash.action.model.GetVersionActionItem;
import com.jpexs.decompiler.flash.ecma.EcmaScript;
import com.jpexs.decompiler.flash.ecma.Undefined;
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 ActionGetVariable extends Action {
public ActionGetVariable() {
super(0x1C, 0);
}
@Override
public String toString() {
return "GetVariable";
}
@Override
public boolean execute(LocalDataArea lda) {
if (lda.stack.isEmpty()) {
return false;
}
Object value = lda.localVariables.get(EcmaScript.toString(lda.pop()));
if (value == null) {
value = Undefined.INSTANCE;
}
lda.stack.push(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 name = stack.pop();
String nameStr;
if (name instanceof DirectValueActionItem) {
nameStr = name.toStringNoQuotes(LocalData.empty);
} else {
nameStr = EcmaScript.toString(name.getResult());
}
GraphTargetItem computedVal = variables.get(nameStr);
if (name instanceof DirectValueActionItem && ((DirectValueActionItem) name).value.equals("/:$version")) {
stack.push(new GetVersionActionItem(this, lineStartAction));
} else if (!(name instanceof DirectValueActionItem) && !(name instanceof GetVariableActionItem)) {
stack.push(new EvalActionItem(this, lineStartAction, name));
} else {
GetVariableActionItem gvt = new GetVariableActionItem(this, lineStartAction, name);
gvt.setComputedValue(computedVal);
stack.push(gvt);
}
}
@Override
public int getStackPopCount(BaseLocalData localData, TranslateStack stack) {
return 1;
}
@Override
public int getStackPushCount(BaseLocalData localData, TranslateStack stack) {
return 1;
}
}