/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.scope;
import jetbrains.mps.smodel.BaseScope;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.module.SModule;
import java.util.Collections;
/**
* Scope that knows nothing. Note, we've got few scopes and search scopes, namely {@code jetbrains.mps.scope.Scope} from [kernel],
* openapi {@link org.jetbrains.mps.openapi.module.SearchScope} and deprecated {@code jetbrains.mps.smodel.search.ISearchScope} from [kernel] as well.
* Unfortunately, all of them are in use now. All need an empty scope, and it's easy for names to clash.
* This class corresponds to openapi search scope instance.
* @author Artem Tikhomirov
* @since 3.4
*/
public final class EmptySearchScope extends BaseScope {
public EmptySearchScope() {
}
@NotNull
@Override
public Iterable<SModule> getModules() {
return Collections.emptyList();
}
@NotNull
@Override
public Iterable<SModel> getModels() {
return Collections.emptyList();
}
}