/*
 * Copyright 2008 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 com.google.gwt.dev.shell;

/**
 * A type that can map JSNI field and method references to dispatch information.
 */
public interface DispatchIdOracle {

  /**
   * Returns the {@link DispatchClassInfo} for a given dispatch id.
   * 
   * @param dispId dispatch identifier
   * @return {@link DispatchClassInfo} for a given dispatch id or null if one
   *         does not exist
   */
  DispatchClassInfo getClassInfoByDispId(int dispId);

  /**
   * Returns the dispatch id for a JSNI member reference.
   * 
   * @param jsniMemberRef a JSNI member reference
   * @return dispatch id or -1 if the JSNI member reference could not be found
   */
  int getDispId(String jsniMemberRef);

}