/*
* Copyright (c) 2012 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.scoping;
import static com.google.common.collect.Sets.newHashSet;
import java.util.Collection;
import java.util.Set;
import org.eclipse.xtext.resource.IEObjectDescription;
import com.google.common.base.Strings;
import com.google.eclipse.protobuf.model.util.MessageFields;
import com.google.eclipse.protobuf.model.util.Messages;
import com.google.eclipse.protobuf.model.util.ModelObjects;
import com.google.eclipse.protobuf.naming.NormalNamingStrategy;
import com.google.eclipse.protobuf.protobuf.Group;
import com.google.eclipse.protobuf.protobuf.IndexedElement;
import com.google.eclipse.protobuf.protobuf.Message;
import com.google.eclipse.protobuf.protobuf.MessageElement;
import com.google.eclipse.protobuf.protobuf.MessageField;
import com.google.eclipse.protobuf.protobuf.TypeExtension;
import com.google.inject.Inject;
/**
* @author alruiz@google.com (Alex Ruiz)
*/
class ExtensionFieldNameFinderStrategy implements CustomOptionFieldNameFinder.FinderStrategy {
@Inject private MessageFields messageFields;
@Inject private Messages messages;
@Inject private ModelObjects modelObjects;
@Inject private NormalNamingStrategy namingStrategy;
@Inject private QualifiedNameDescriptions qualifiedNameDescriptions;
@Override public Collection<IEObjectDescription> findMessageFields(IndexedElement reference) {
Set<IEObjectDescription> descriptions = newHashSet();
if (reference instanceof MessageField) {
Message type = messageFields.messageTypeOf((MessageField) reference);
// check first in descriptor.proto
for (TypeExtension extension : messages.extensionsOf(type, modelObjects.rootOf(reference))) {
for (MessageElement element : extension.getElements()) {
if (element instanceof IndexedElement) {
descriptions.addAll(qualifiedNameDescriptions.qualifiedNames(element, namingStrategy));
}
}
}
} else if (reference instanceof Group) {
String name = ((Group) reference).getName();
if (!Strings.isNullOrEmpty(name)) {
descriptions.addAll(qualifiedNameDescriptions.qualifiedNames(reference, namingStrategy));
}
}
return descriptions;
}
}