87 lines
2 KiB
Java
87 lines
2 KiB
Java
/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.me;
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import java.util.Iterator;
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import java.util.Map;
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import appeng.api.networking.IGridHost;
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import appeng.api.networking.IGridNode;
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/**
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* Nested iterator for {@link appeng.me.MachineSet}
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*
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* Traverses first over the {@link appeng.me.MachineSet} and then over every containing
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* {@link appeng.api.networking.IGridNode}
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*/
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public class GridNodeIterator implements Iterator<IGridNode>
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{
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private final Iterator<MachineSet> outerIterator;
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private Iterator<IGridNode> innerIterator;
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public GridNodeIterator( final Map<Class<? extends IGridHost>, MachineSet> machines )
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{
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this.outerIterator = machines.values().iterator();
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this.innerHasNext();
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}
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private boolean innerHasNext()
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{
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final boolean hasNext = this.outerIterator.hasNext();
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if( hasNext )
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{
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final MachineSet nextElem = this.outerIterator.next();
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this.innerIterator = nextElem.iterator();
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}
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return hasNext;
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}
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@Override
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public boolean hasNext()
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{
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while( true )
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{
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if( this.innerIterator.hasNext() )
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{
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return true;
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}
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else if( !this.innerHasNext() )
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{
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return false;
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}
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}
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}
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@Override
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public IGridNode next()
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{
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return this.innerIterator.next();
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}
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@Override
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public void remove()
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{
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this.innerIterator.remove();
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}
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}
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