/*
* Copyright 2000-2015 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.data;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.Function;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.vcs.log.*;
import com.intellij.vcs.log.graph.GraphColorManagerImpl;
import com.intellij.vcs.log.graph.GraphCommit;
import com.intellij.vcs.log.graph.PermanentGraph;
import com.intellij.vcs.log.graph.impl.facade.PermanentGraphImpl;
import com.intellij.vcs.log.util.StopWatch;
import gnu.trove.TIntHashSet;
import org.jetbrains.annotations.NotNull;
import java.util.*;
public class DataPack extends DataPackBase {
public static final DataPack EMPTY = createEmptyInstance();
@NotNull private final PermanentGraph<Integer> myPermanentGraph;
DataPack(@NotNull RefsModel refsModel,
@NotNull PermanentGraph<Integer> permanentGraph,
@NotNull Map<VirtualFile, VcsLogProvider> providers,
boolean full) {
super(providers, refsModel, full);
myPermanentGraph = permanentGraph;
}
@NotNull
static DataPack build(@NotNull List<? extends GraphCommit<Integer>> commits,
@NotNull Map<VirtualFile, CompressedRefs> refs,
@NotNull Map<VirtualFile, VcsLogProvider> providers,
@NotNull final VcsLogStorage hashMap,
boolean full) {
RefsModel refsModel;
PermanentGraph<Integer> permanentGraph;
if (commits.isEmpty()) {
refsModel = new RefsModel(refs, ContainerUtil.<Integer>newHashSet(), hashMap, providers);
permanentGraph = EmptyPermanentGraph.getInstance();
}
else {
refsModel = new RefsModel(refs, getHeads(commits), hashMap, providers);
Function<Integer, Hash> hashGetter = createHashGetter(hashMap);
GraphColorManagerImpl colorManager = new GraphColorManagerImpl(refsModel, hashGetter, getRefManagerMap(providers));
Set<Integer> branches = getBranchCommitHashIndexes(refsModel.getBranches(), hashMap);
StopWatch sw = StopWatch.start("building graph");
permanentGraph = PermanentGraphImpl.newInstance(commits, colorManager, branches);
sw.report();
}
return new DataPack(refsModel, permanentGraph, providers, full);
}
@NotNull
public static Function<Integer, Hash> createHashGetter(@NotNull final VcsLogStorage hashMap) {
return commitIndex -> {
CommitId commitId = hashMap.getCommitId(commitIndex);
if (commitId == null) return null;
return commitId.getHash();
};
}
@NotNull
private static Set<Integer> getHeads(@NotNull List<? extends GraphCommit<Integer>> commits) {
TIntHashSet parents = new TIntHashSet();
for (GraphCommit<Integer> commit : commits) {
for (int parent : commit.getParents()) {
parents.add(parent);
}
}
Set<Integer> heads = ContainerUtil.newHashSet();
for (GraphCommit<Integer> commit : commits) {
if (!parents.contains(commit.getId())) {
heads.add(commit.getId());
}
}
return heads;
}
@NotNull
private static Set<Integer> getBranchCommitHashIndexes(@NotNull Collection<VcsRef> branches, @NotNull VcsLogStorage hashMap) {
Set<Integer> result = new HashSet<>();
for (VcsRef vcsRef : branches) {
result.add(hashMap.getCommitIndex(vcsRef.getCommitHash(), vcsRef.getRoot()));
}
return result;
}
@NotNull
public static Map<VirtualFile, VcsLogRefManager> getRefManagerMap(@NotNull Map<VirtualFile, VcsLogProvider> logProviders) {
Map<VirtualFile, VcsLogRefManager> map = ContainerUtil.newHashMap();
for (Map.Entry<VirtualFile, VcsLogProvider> entry : logProviders.entrySet()) {
map.put(entry.getKey(), entry.getValue().getReferenceManager());
}
return map;
}
@NotNull
private static DataPack createEmptyInstance() {
RefsModel emptyModel =
new RefsModel(ContainerUtil.newHashMap(), ContainerUtil.<Integer>newHashSet(), VcsLogStorageImpl.EMPTY, ContainerUtil.newHashMap());
return new DataPack(emptyModel, EmptyPermanentGraph.getInstance(), Collections.<VirtualFile, VcsLogProvider>emptyMap(), false);
}
@NotNull
public PermanentGraph<Integer> getPermanentGraph() {
return myPermanentGraph;
}
@Override
public String toString() {
return "{DataPack. " + myPermanentGraph.getAllCommits().size() + " commits in " + myLogProviders.keySet().size() + " roots}";
}
}