/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: LayoutMergerFactory.java
* Written by Dmitry Nadezhin, Sun Microsystems.
*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.database.geometry.bool;
import com.sun.electric.database.hierarchy.Cell;
import com.sun.electric.util.config.Configuration;
/**
*
*/
public abstract class LayoutMergerFactory {
/**
* <p>Constructor for derived classes.</p>
*
* <p>The constructor does nothing.</p>
*
* <p>Derived classes must create {@link LayoutMergerFactory} objects
*/
protected LayoutMergerFactory() {
}
public abstract LayoutMerger newMerger(Cell topCell);
public static LayoutMergerFactory newInstance() {
LayoutMergerFactory factory = Configuration.lookup(LayoutMergerFactory.class);
if (factory == null)
factory = new LayoutMergerDefaultImpl.Factory();
return factory;
}
}