/*
* Copyright 2003-2016 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 jetbrains.mps.generator;
import jetbrains.mps.util.Pair;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.List;
/**
* Records all completed generator tasks and their respective status.
* @author Artem Tikhomirov
* @since 3.4
*/
public class GenerationTaskRecorder<T extends GeneratorTask> implements GeneratorTaskListener<T> {
private final GeneratorTaskListener<? super T> myDelegate;
private final List<Pair<T, GenerationStatus>> myCompletedTasks = new ArrayList<Pair<T, GenerationStatus>>();
public GenerationTaskRecorder(@Nullable GeneratorTaskListener<? super T> delegate) {
myDelegate = delegate;
}
@Override
public void start(@NotNull T task) {
if (myDelegate != null) {
myDelegate.start(task);
}
}
@Override
public void done(@NotNull T task, @NotNull GenerationStatus status) {
myCompletedTasks.add(new Pair<T, GenerationStatus>(task, status));
if (myDelegate != null) {
myDelegate.done(task, status);
}
}
public List<GenerationStatus> getAllRecorded() {
ArrayList<GenerationStatus> rv = new ArrayList<GenerationStatus>(myCompletedTasks.size());
for (Pair<T, GenerationStatus> p : myCompletedTasks) {
rv.add(p.o2);
}
return rv;
}
/**
* Looks up last recorded generation outcome for the given task
* @param task what to look up
* @return most recent generation status for the task, or <code>null</code> if none found.
*/
@Nullable
public GenerationStatus getRecorded(T task) {
GenerationStatus lastStatus = null;
for (Pair<T, GenerationStatus> p : myCompletedTasks) {
if (p.o1 == task) {
lastStatus = p.o2;
// intentionally keep going, to find the latest.
// Collections.reverse would walk the list once anyway, why bother then?
}
}
return lastStatus;
}
}