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/*
* SPDX-FileCopyrightText: 2024 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.language.scoping;
import com.google.common.collect.Iterables;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.ISelectable;
import java.util.Collection;
import java.util.List;
class CompositeSelectable implements ISelectable {
private static final CompositeSelectable EMPTY = new CompositeSelectable(List.of());
private final List<? extends ISelectable> children;
private CompositeSelectable(List<? extends ISelectable> children) {
this.children = children;
}
@Override
public boolean isEmpty() {
return children.isEmpty();
}
@Override
public Iterable<IEObjectDescription> getExportedObjects() {
return Iterables.concat(Iterables.transform(children, ISelectable::getExportedObjects));
}
@Override
public Iterable<IEObjectDescription> getExportedObjects(EClass type, QualifiedName name, boolean ignoreCase) {
return Iterables.concat(Iterables.transform(children, child -> child.getExportedObjects(type, name,
ignoreCase)));
}
@Override
public Iterable<IEObjectDescription> getExportedObjectsByType(EClass type) {
return Iterables.concat(Iterables.transform(children, child -> child.getExportedObjectsByType(type)));
}
@Override
public Iterable<IEObjectDescription> getExportedObjectsByObject(EObject object) {
return Iterables.concat(Iterables.transform(children, child -> child.getExportedObjectsByObject(object)));
}
public static ISelectable of(Collection<? extends ISelectable> children) {
var filteredChildren = children.stream().filter(selectable -> !selectable.isEmpty()).toList();
return switch (filteredChildren.size()) {
case 0 -> EMPTY;
case 1 -> filteredChildren.getFirst();
default -> new CompositeSelectable(filteredChildren);
};
}
}
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