EmptyList.java

package jetbrains.mps.lang.smodel.generator.smodelAdapter;

/*Generated by MPS */

import java.util.AbstractList;
import org.jetbrains.annotations.NotNull;
import jetbrains.mps.logging.Logger;
import org.apache.log4j.LogManager;

/**
 * The list that is always empty, and logs an error on attempt to add anything in there.
 * Unlike new ArrayList(), doesn't tolerate modifications.
 * Unlike Collections.emptyList(), doesn't fail with exception on modifications
 */
/*package*/ class EmptyList<T> extends AbstractList<T> {
  private String myMessage;
  /*package*/ EmptyList() {
    myMessage = "%s";
  }
  /*package*/ EmptyList(@NotNull String message) {
    myMessage = message;
  }
  @Override
  public T get(int p0) {
    throw new IndexOutOfBoundsException();
  }
  @Override
  public int size() {
    return 0;
  }
  @Override
  public void add(int i, T e) {
    final Logger l = Logger.wrap(LogManager.getLogger(EmptyList.class));
    l.error(String.format(myMessage, e));
  }
  @Override
  public boolean contains(Object object) {
    return false;
  }
}