package lombok.core.configuration;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import lombok.core.configuration.ConfigurationSource.ListModification;
import lombok.core.configuration.ConfigurationSource.Result;
public class BubblingConfigurationResolver implements ConfigurationResolver {
private final Iterable<ConfigurationSource> sources;
public BubblingConfigurationResolver(Iterable<ConfigurationSource> sources) {
this.sources = sources;
}
@SuppressWarnings("unchecked")
@Override
public <T> T resolve(ConfigurationKey<T> key) {
boolean isList = key.getType().isList();
List<List<ListModification>> listModificationsList = null;
for (ConfigurationSource source : sources) {
Result result = source.resolve(key);
if (result == null) continue;
if (isList) {
if (listModificationsList == null) listModificationsList = new ArrayList<List<ListModification>>();
listModificationsList.add((List<ListModification>)result.getValue());
}
if (result.isAuthoritative()) {
if (isList) break;
return (T) result.getValue();
}
}
if (!isList) return null;
if (listModificationsList == null) return (T) Collections.emptyList();
List<Object> listValues = new ArrayList<Object>();
Collections.reverse(listModificationsList);
for (List<ListModification> listModifications : listModificationsList) {
if (listModifications != null) for (ListModification modification : listModifications) {
listValues.remove(modification.getValue());
if (modification.isAdded()) listValues.add(modification.getValue());
}
}
return (T) listValues;
}
}