/*
* 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.model.clauses;
import com.jpexs.decompiler.flash.SWF;
import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.action.Action;
import com.jpexs.decompiler.flash.action.model.DirectValueActionItem;
import com.jpexs.decompiler.flash.action.parser.script.ActionSourceGenerator;
import com.jpexs.decompiler.flash.action.swf4.ActionIf;
import com.jpexs.decompiler.flash.action.swf4.ActionJump;
import com.jpexs.decompiler.flash.action.swf4.ActionPush;
import com.jpexs.decompiler.flash.action.swf4.RegisterNumber;
import com.jpexs.decompiler.flash.action.swf5.ActionEquals2;
import com.jpexs.decompiler.flash.action.swf5.ActionStoreRegister;
import com.jpexs.decompiler.flash.action.swf6.ActionEnumerate2;
import com.jpexs.decompiler.flash.ecma.Null;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
import com.jpexs.decompiler.flash.helpers.LoopWithType;
import com.jpexs.decompiler.flash.helpers.NulWriter;
import com.jpexs.decompiler.graph.Block;
import com.jpexs.decompiler.graph.CompilationException;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.Loop;
import com.jpexs.decompiler.graph.SourceGenerator;
import com.jpexs.decompiler.graph.model.ContinueItem;
import com.jpexs.decompiler.graph.model.LocalData;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
/**
*
* @author JPEXS
*/
public class ForInActionItem extends LoopActionItem implements Block {
public GraphTargetItem variableName;
public GraphTargetItem enumVariable;
public List<GraphTargetItem> commands;
private boolean labelUsed;
@Override
public List<List<GraphTargetItem>> getSubs() {
List<List<GraphTargetItem>> ret = new ArrayList<>();
if (commands != null) {
ret.add(commands);
}
return ret;
}
public ForInActionItem(GraphSourceItem instruction, GraphSourceItem lineStartIns, Loop loop, GraphTargetItem variableName, GraphTargetItem enumVariable, List<GraphTargetItem> commands) {
super(instruction, lineStartIns, loop);
this.variableName = variableName;
this.enumVariable = enumVariable;
this.commands = commands;
}
@Override
public boolean needsSemicolon() {
return false;
}
@Override
public GraphTextWriter appendTo(GraphTextWriter writer, LocalData localData) throws InterruptedException {
if (writer instanceof NulWriter) {
((NulWriter) writer).startLoop(loop.id, LoopWithType.LOOP_TYPE_LOOP);
}
if (labelUsed) {
writer.append("loop").append(loop.id).append(":").newLine();
}
writer.append("for");
if (writer.getFormatting().spaceBeforeParenthesesForParentheses) {
writer.append(" ");
}
writer.append("(");
if ((variableName instanceof DirectValueActionItem) && (((DirectValueActionItem) variableName).value instanceof RegisterNumber)) {
writer.append("var ");
}
stripQuotes(variableName, localData, writer);
writer.append(" in ");
enumVariable.toString(writer, localData);
writer.append(")").startBlock();
for (GraphTargetItem ti : commands) {
ti.toStringSemicoloned(writer, localData).newLine();
}
writer.endBlock();
if (writer instanceof NulWriter) {
LoopWithType loopOjb = ((NulWriter) writer).endLoop(loop.id);
labelUsed = loopOjb.used;
}
return writer;
}
@Override
public List<ContinueItem> getContinues() {
List<ContinueItem> ret = new ArrayList<>();
for (GraphTargetItem ti : commands) {
if (ti instanceof ContinueItem) {
ret.add((ContinueItem) ti);
}
if (ti instanceof Block) {
ret.addAll(((Block) ti).getContinues());
}
}
return ret;
}
@Override
public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
List<GraphSourceItem> ret = new ArrayList<>();
ActionSourceGenerator asGenerator = (ActionSourceGenerator) generator;
HashMap<String, Integer> registerVars = asGenerator.getRegisterVars(localData);
ret.addAll(enumVariable.toSource(localData, generator));
ret.add(new ActionEnumerate2());
List<Action> loopExpr = new ArrayList<>();
int exprReg = asGenerator.getTempRegister(localData);
loopExpr.add(new ActionStoreRegister(exprReg));
loopExpr.add(new ActionPush(Null.INSTANCE));
loopExpr.add(new ActionEquals2());
ActionIf forInEndIf = new ActionIf(0);
loopExpr.add(forInEndIf);
List<Action> loopBody = new ArrayList<>();
loopBody.add(new ActionPush(new RegisterNumber(exprReg)));
loopBody.addAll(asGenerator.toActionList(variableName.toSourceIgnoreReturnValue(localData, generator)));
int oldForIn = asGenerator.getForInLevel(localData);
asGenerator.setForInLevel(localData, oldForIn + 1);
loopBody.addAll(asGenerator.toActionList(asGenerator.generate(localData, commands)));
asGenerator.setForInLevel(localData, oldForIn);
ActionJump forinJmpBack = new ActionJump(0);
loopBody.add(forinJmpBack);
int bodyLen = Action.actionsToBytes(loopBody, false, SWF.DEFAULT_VERSION).length;
int exprLen = Action.actionsToBytes(loopExpr, false, SWF.DEFAULT_VERSION).length;
forinJmpBack.setJumpOffset(-bodyLen - exprLen);
forInEndIf.setJumpOffset(bodyLen);
ret.addAll(loopExpr);
ret.addAll(loopBody);
asGenerator.releaseTempRegister(localData, exprReg);
return ret;
}
@Override
public boolean hasReturnValue() {
return false;
}
}