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/*
* Copyright 2000-2014 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.concurrency;
import org.jetbrains.annotations.NotNull;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
/**
* Author: dmitrylomov
*/
public class AsyncUtil {
private static final AsyncFuture<Boolean> TRUE = createConst(true);
private static final AsyncFuture<Boolean> FALSE = createConst(false);
public static <V> V get(@NotNull Future<V> result) {
try {
return result.get();
}
catch (InterruptedException e) {
throw new Error(e);
}
catch (ExecutionException e) {
Throwable cause = e.getCause();
if (cause instanceof RuntimeException) {
throw (RuntimeException)cause;
}
else {
throw new Error(cause);
}
}
}
private static AsyncFuture<Boolean> createConst(final boolean result) {
return new AsyncFuture<Boolean>() {
@Override
public void addConsumer(@NotNull Executor executor, @NotNull ResultConsumer<Boolean> consumer) {
consumer.onSuccess(result);
}
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
return false;
}
@Override
public boolean isCancelled() {
return false;
}
@Override
public boolean isDone() {
return true;
}
@Override
public Boolean get() {
return result;
}
@Override
public Boolean get(long timeout, @NotNull TimeUnit unit) {
return result;
}
};
}
@NotNull
public static AsyncFuture<Boolean> wrapBoolean(boolean result) {
return result ? TRUE : FALSE;
}
}
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