| // Copyright (C) 2016 The Android Open Source Project |
| // |
| // 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.gerrit.server.patch; |
| |
| import static com.google.gerrit.server.ioutil.BasicSerialization.readVarInt32; |
| import static com.google.gerrit.server.ioutil.BasicSerialization.writeVarInt32; |
| import static java.util.Objects.requireNonNull; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| public class ComparisonType { |
| |
| /** 1-based parent */ |
| private final Integer parentNum; |
| |
| private final boolean autoMerge; |
| |
| public static ComparisonType againstOtherPatchSet() { |
| return new ComparisonType(null, false); |
| } |
| |
| public static ComparisonType againstParent(int parentNum) { |
| return new ComparisonType(parentNum, false); |
| } |
| |
| public static ComparisonType againstAutoMerge() { |
| return new ComparisonType(null, true); |
| } |
| |
| private ComparisonType(Integer parentNum, boolean autoMerge) { |
| this.parentNum = parentNum; |
| this.autoMerge = autoMerge; |
| } |
| |
| public boolean isAgainstParentOrAutoMerge() { |
| return isAgainstParent() || isAgainstAutoMerge(); |
| } |
| |
| public boolean isAgainstParent() { |
| return parentNum != null; |
| } |
| |
| public boolean isAgainstAutoMerge() { |
| return autoMerge; |
| } |
| |
| public int getParentNum() { |
| requireNonNull(parentNum); |
| return parentNum; |
| } |
| |
| void writeTo(OutputStream out) throws IOException { |
| writeVarInt32(out, parentNum != null ? parentNum : 0); |
| writeVarInt32(out, autoMerge ? 1 : 0); |
| } |
| |
| static ComparisonType readFrom(InputStream in) throws IOException { |
| int p = readVarInt32(in); |
| Integer parentNum = p > 0 ? p : null; |
| boolean autoMerge = readVarInt32(in) != 0; |
| return new ComparisonType(parentNum, autoMerge); |
| } |
| } |