platform/vcs-api/src/com/intellij/openapi/vcs/merge/MergeData.java

/*
 * Copyright 2000-2009 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.openapi.vcs.merge;

import com.intellij.openapi.vcs.history.VcsRevisionNumber;
import org.jetbrains.annotations.Nullable;

/**
 * MergeData contains 3 versions of raw file content used in 3-way merge.
 * ORIGINAL - is the content which the file had before conflicting change;
 * LAST - is the content which came from the server while updating.
 * CURRENT - is the local change.
 * {@link com.intellij.openapi.vcs.merge.MergeProvider} should initialize all three variables of the MergeData, because
 * null value is treated as an error, not as blank content.
 *
 * @author lesya
 */
public class MergeData {
  public byte[] ORIGINAL;
  public byte[] LAST;
  public byte[] CURRENT;

  @Nullable public VcsRevisionNumber LAST_REVISION_NUMBER;
}