platform/vcs-log/graph/src/com/intellij/vcs/log/graph/utils/IntToIntMap.java

/*
 * Copyright 2000-2014 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 com.intellij.vcs.log.graph.utils;

/**
 * @author erokhins
 */
public interface IntToIntMap {
  int shortSize();
  int longSize();
  int getLongIndex(int shortIndex); // must be very fast

  /**
   * @param longIndex
   * @return max shortIndex, witch getLongIndex(shortIndex) <= longIndex or 0
   */
  int getShortIndex(int longIndex);
}