/*
* Copyright (c) 2011 Google Inc.
*
* 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
*/
package com.google.eclipse.protobuf.ui.contentassist;
import static java.util.Collections.emptySet;
import static java.util.Collections.unmodifiableCollection;
import static com.google.common.collect.Maps.newHashMap;
import java.util.Collection;
import java.util.Map;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.IEObjectDescription;
/**
* @author alruiz@google.com (Alex Ruiz)
*/
class IEObjectDescriptionChooser {
Collection<IEObjectDescription> shortestQualifiedNamesIn(Collection<IEObjectDescription> descriptions) {
if (descriptions.isEmpty()) {
return emptySet();
}
Map<EObject, IEObjectDescription> shortestOnes = newHashMap();
for (IEObjectDescription d : descriptions) {
EObject e = d.getEObjectOrProxy();
IEObjectDescription stored = shortestOnes.get(e);
if (stored != null) {
QualifiedName currentName = d.getName();
if (currentName.getSegmentCount() >= stored.getName().getSegmentCount()) {
continue;
}
}
shortestOnes.put(e, d);
}
return unmodifiableCollection(shortestOnes.values());
}
}