/*
* Copyright 2003-2015 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.project;
import jetbrains.mps.components.CoreComponent;
import jetbrains.mps.smodel.BaseScope;
import jetbrains.mps.util.iterable.CollectManyIterator;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.model.SModelReference;
import org.jetbrains.mps.openapi.module.SModule;
import org.jetbrains.mps.openapi.module.SModuleReference;
import org.jetbrains.mps.openapi.module.SRepository;
import java.util.Iterator;
/**
* Global in a sense 'global for a given repository'. Since we used to have single repository, deemed 'global'.
*/
public class GlobalScope extends BaseScope implements CoreComponent {
private static GlobalScope INSTANCE;
public static GlobalScope getInstance() {
return INSTANCE;
}
protected final SRepository myRepository;
public GlobalScope(SRepository moduleRepository) {
myRepository = moduleRepository;
}
@Override
public void init() {
if (INSTANCE != null) {
throw new IllegalStateException("double initialization");
}
INSTANCE = this;
}
@Override
public void dispose() {
INSTANCE = null;
}
public String toString() {
return "global scope";
}
@NotNull
@Override
public Iterable<SModule> getModules() {
return myRepository.getModules();
}
@NotNull
@Override
public Iterable<SModel> getModels() {
return new Iterable<SModel>() {
@Override
public Iterator<SModel> iterator() {
return new CollectManyIterator<SModule, SModel>(getModules()) {
@Nullable
@Override
protected Iterator<SModel> translate(SModule module) {
return module.getModels().iterator();
}
};
}
};
}
@Override
public SModule resolve(SModuleReference reference) {
return myRepository.getModule(reference.getModuleId());
}
@Override
public SModel resolve(SModelReference reference) {
return reference.resolve(myRepository);
}
}