/**
 * Copyright 2009 Google Inc.
 *
 * 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 org.waveprotocol.wave.model.document.operation;

/**
 * Information required by an annotation boundary operation component.
 *
 * Implementations must be immutable. The order of end keys and change keys
 * must be strictly monotonic (as verified by
 * DocOpAutomaton.checkAnnotationBoundary).
 */
public interface AnnotationBoundaryMap {
  int endSize();
  String getEndKey(int endIndex);

  int changeSize();
  String getChangeKey(int changeIndex);
  String getOldValue(int changeIndex);
  String getNewValue(int changeIndex);
}
