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/**
* Copyright (c) 2015, 2016 Willink Transformations and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* E.D.Willink - Initial API and implementation
*/
package org.eclipse.qvtd.xtext.qvtcore.tests.hsv2hls;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import org.eclipse.emf.common.util.ECollections;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.ocl.examples.xtext.tests.XtextTestCase.Normalizer;
import org.eclipse.ocl.pivot.utilities.ClassUtil;
import org.eclipse.qvtd.xtext.qvtcore.tests.hsv2hls.HLSTree.HLSTreePackage;
import org.eclipse.qvtd.xtext.qvtimperative.tests.ModelNormalizer;
/**
* FIXME Bug 490497 - this is a workaround for Bug 490172
*
* HSV2HLSNormalizer normalises the results of the HSV2HLS transformation pending support for order preservation.
*/
public class HSV2HLSNormalizer implements ModelNormalizer
{
public static final @NonNull HSV2HLSNormalizer INSTANCE = new HSV2HLSNormalizer();
protected static class HLSNodeComparator implements Comparator<@NonNull EObject>
{
private final @NonNull EAttribute hlsNodeName;
public HLSNodeComparator(@NonNull EAttribute hlsNodeName) {
this.hlsNodeName = hlsNodeName;
}
@Override
public int compare(@NonNull EObject o1, @NonNull EObject o2) {
String n1 = (String) o1.eGet(hlsNodeName);
String n2 = (String) o2.eGet(hlsNodeName);
return ClassUtil.safeCompareTo(n1, n2);
}
}
public @NonNull List<Normalizer> normalize(@NonNull Resource resource) {
EObject eRoot = resource.getContents().get(0);
EPackage ePackage = eRoot.eClass().getEPackage();
EClass hlsNodeClass = (EClass) ePackage.getEClassifier(HLSTreePackage.Literals.HLS_NODE.getName());
assert hlsNodeClass != null;
@NonNull EReference hlsNodeChildren = (EReference) hlsNodeClass.getEStructuralFeature(HLSTreePackage.Literals.HLS_NODE__CHILDREN.getName());
assert hlsNodeChildren != null;
@NonNull EAttribute hlsNodeName = (EAttribute) hlsNodeClass.getEStructuralFeature(HLSTreePackage.Literals.HLS_NODE__NAME.getName());
assert hlsNodeName != null;
HLSNodeComparator personComparator = new HLSNodeComparator(hlsNodeName);
List<@NonNull EObject> allNodes = new ArrayList<@NonNull EObject>();
for (TreeIterator<EObject> tit = resource.getAllContents(); tit.hasNext(); ) {
EObject eObject = tit.next();
if (hlsNodeClass.isInstance(eObject)) {
allNodes.add(eObject);
}
}
for (@NonNull EObject hlsNode : allNodes) {
@SuppressWarnings("unchecked")
EList<@NonNull EObject> children = (EList<@NonNull EObject>) hlsNode.eGet(hlsNodeChildren);
ECollections.sort(children, personComparator);
}
List<Normalizer> normalizers = new ArrayList<Normalizer>();
return normalizers;
}
}
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