com.google.gerrit.server.patch.DiffMappings Maven / Gradle / Ivy
// Copyright (C) 2020 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.common.collect.ImmutableSet.toImmutableSet;
import com.google.common.collect.ImmutableSet;
import com.google.gerrit.server.patch.GitPositionTransformer.FileMapping;
import com.google.gerrit.server.patch.GitPositionTransformer.Mapping;
import com.google.gerrit.server.patch.GitPositionTransformer.Range;
import com.google.gerrit.server.patch.GitPositionTransformer.RangeMapping;
/** Mappings derived from diffs. */
public class DiffMappings {
private DiffMappings() {}
public static Mapping toMapping(PatchListEntry patchListEntry) {
FileMapping fileMapping = toFileMapping(patchListEntry);
ImmutableSet rangeMappings = toRangeMappings(patchListEntry);
return Mapping.create(fileMapping, rangeMappings);
}
private static FileMapping toFileMapping(PatchListEntry patchListEntry) {
switch (patchListEntry.getChangeType()) {
case ADDED:
return FileMapping.forAddedFile(patchListEntry.getNewName());
case MODIFIED:
case REWRITE:
return FileMapping.forModifiedFile(patchListEntry.getNewName());
case DELETED:
// Name of deleted file is mentioned as newName.
return FileMapping.forDeletedFile(patchListEntry.getNewName());
case RENAMED:
case COPIED:
return FileMapping.forRenamedFile(patchListEntry.getOldName(), patchListEntry.getNewName());
default:
throw new IllegalStateException("Unmapped diff type: " + patchListEntry.getChangeType());
}
}
private static ImmutableSet toRangeMappings(PatchListEntry patchListEntry) {
return patchListEntry.getEdits().stream()
.map(
edit ->
RangeMapping.create(
Range.create(edit.getBeginA(), edit.getEndA()),
Range.create(edit.getBeginB(), edit.getEndB())))
.collect(toImmutableSet());
}
}