/*
* 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.util.Condition;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.containers.BiDirectionalEnumerator;
import com.intellij.vcs.log.CommitId;
import com.intellij.vcs.log.Hash;
import com.intellij.vcs.log.VcsRef;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import static com.intellij.util.containers.ContainerUtil.canonicalStrategy;
public class InMemoryStorage implements VcsLogStorage {
private final BiDirectionalEnumerator<CommitId> myCommitIdEnumerator = new BiDirectionalEnumerator<>(1, canonicalStrategy());
private final BiDirectionalEnumerator<VcsRef> myRefsEnumerator = new BiDirectionalEnumerator<>(1, canonicalStrategy());
@Override
public int getCommitIndex(@NotNull Hash hash, @NotNull VirtualFile root) {
return getOrPut(hash, root);
}
private int getOrPut(@NotNull Hash hash, @NotNull VirtualFile root) {
return myCommitIdEnumerator.enumerate(new CommitId(hash, root));
}
@NotNull
@Override
public CommitId getCommitId(int commitIndex) {
return myCommitIdEnumerator.getValue(commitIndex);
}
@Nullable
@Override
public CommitId findCommitId(@NotNull final Condition<CommitId> condition) {
final CommitId[] result = new CommitId[]{null};
myCommitIdEnumerator.forEachValue(commitId -> {
if (condition.value(commitId)) {
result[0] = commitId;
return false;
}
return true;
});
return result[0];
}
@Override
public int getRefIndex(@NotNull VcsRef ref) {
return myRefsEnumerator.enumerate(ref);
}
@Nullable
@Override
public VcsRef getVcsRef(int refIndex) {
return myRefsEnumerator.getValue(refIndex);
}
@Override
public void flush() {
// nothing to flush
}
}