/* * 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.abc.avm2.fastavm2; import com.jpexs.decompiler.flash.abc.avm2.instructions.AVM2Instruction; import java.util.Iterator; /** * * @author JPEXS */ public final class FastAVM2ListIterator implements Iterator<AVM2InstructionItem> { private AVM2InstructionItem item; private final FastAVM2List list; private boolean started = false; FastAVM2ListIterator(FastAVM2List list) { item = list.first(); this.list = list; } FastAVM2ListIterator(FastAVM2List list, int index) { item = list.first(); this.list = list; for (int i = 0; i < index; i++) { if (!hasNext()) { throw new Error("Invalid index"); } next(); } } @Override public boolean hasNext() { return item != null && (!started || item != list.first()); } @Override public AVM2InstructionItem next() { AVM2InstructionItem result = item; item = item.next; started = true; /*if (!list.contains(result)) { throw new Error(); }*/ return result; } public AVM2InstructionItem prev() { item = item.prev; if (item == list.first()) { started = false; } /*if (!list.contains(item)) { throw new Error(); }*/ return item; } public void setCurrent(AVM2InstructionItem item) { this.item = item; if (item == list.first()) { started = false; } } @Override public void remove() { item = list.removeItem(item.prev); } public void add(AVM2Instruction ins) { item = list.insertItemAfter(item.prev, ins).next; } public void add(AVM2InstructionItem insItem) { item = list.insertItemAfter(item.prev, insItem).next; } public void addBefore(AVM2InstructionItem insItem) { list.insertItemBefore(item.prev, insItem); } public AVM2InstructionItem peek(int index) { AVM2InstructionItem item = this.item; for (int i = 0; i < index; i++) { if (item == null) { break; } item = item.next; } return item; } }