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/*
* Copyright (c) 2014-2019 by The Monix Project Developers.
* See the project homepage at: https://monix.io
*
* 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 monix.execution.internal.atomic;
import monix.execution.internal.InternalApi;
import scala.MatchError;
/**
* INTERNAL API — used in the implementation of
* `monix.execution.atomic.Atomic`.
*
* Being internal it can always change between minor versions,
* providing no backwards compatibility guarantees and is only public
* because Java does not provide the capability of marking classes as
* "internal" to a package and all its sub-packages.
*/
@InternalApi public final class Factory {
public static BoxedObject newBoxedObject(Object initial, BoxPaddingStrategy padding, boolean allowUnsafe, boolean allowJava8Intrinsics) {
boolean useJava7Unsafe = allowUnsafe && UnsafeAccess.IS_AVAILABLE;
boolean useJava8Unsafe = useJava7Unsafe && allowJava8Intrinsics && UnsafeAccess.HAS_JAVA8_INTRINSICS;
switch (padding) {
case NO_PADDING:
if (useJava8Unsafe)
return new NormalJava8BoxedObject(initial);
else if (useJava7Unsafe)
return new NormalJava7BoxedObject(initial);
else
return new NormalJavaXBoxedObject(initial);
case LEFT_64:
if (useJava8Unsafe)
return new Left64Java8BoxedObject(initial);
else if (useJava7Unsafe)
return new Left64Java7BoxedObject(initial);
else
return new Left64JavaXBoxedObject(initial);
case RIGHT_64:
if (useJava8Unsafe)
return new Right64Java8BoxedObject(initial);
else if (useJava7Unsafe)
return new Right64Java7BoxedObject(initial);
else
return new Right64JavaXBoxedObject(initial);
case LEFT_RIGHT_128:
if (useJava8Unsafe)
return new LeftRight128Java8BoxedObject(initial);
else if (useJava7Unsafe)
return new LeftRight128Java7BoxedObject(initial);
else
return new LeftRight128JavaXBoxedObject(initial);
case LEFT_128:
if (useJava8Unsafe)
return new Left128Java8BoxedObject(initial);
else if (useJava7Unsafe)
return new Left128Java7BoxedObject(initial);
else
return new Left128JavaXBoxedObject(initial);
case RIGHT_128:
if (useJava8Unsafe)
return new Right128Java8BoxedObject(initial);
else if (useJava7Unsafe)
return new Right128Java7BoxedObject(initial);
else
return new Right128JavaXBoxedObject(initial);
case LEFT_RIGHT_256:
if (useJava8Unsafe)
return new LeftRight256Java8BoxedObject(initial);
else if (useJava7Unsafe)
return new LeftRight256Java7BoxedObject(initial);
else
return new LeftRight256JavaXBoxedObject(initial);
default:
throw new MatchError(padding);
}
}
public static BoxedInt newBoxedInt(int initial, BoxPaddingStrategy padding, boolean allowUnsafe, boolean allowJava8Intrinsics) {
boolean useJava7Unsafe = allowUnsafe && UnsafeAccess.IS_AVAILABLE;
boolean useJava8Unsafe = useJava7Unsafe && allowJava8Intrinsics && UnsafeAccess.HAS_JAVA8_INTRINSICS;
switch (padding) {
case NO_PADDING:
if (useJava8Unsafe)
return new NormalJava8BoxedInt(initial);
else if (useJava7Unsafe)
return new NormalJava7BoxedInt(initial);
else
return new NormalJavaXBoxedInt(initial);
case LEFT_64:
if (useJava8Unsafe)
return new Left64Java8BoxedInt(initial);
else if (useJava7Unsafe)
return new Left64Java7BoxedInt(initial);
else
return new Left64JavaXBoxedInt(initial);
case RIGHT_64:
if (useJava8Unsafe)
return new Right64Java8BoxedInt(initial);
else if (useJava7Unsafe)
return new Right64Java7BoxedInt(initial);
else
return new Right64JavaXBoxedInt(initial);
case LEFT_RIGHT_128:
if (useJava8Unsafe)
return new LeftRight128Java8BoxedInt(initial);
else if (useJava7Unsafe)
return new LeftRight128Java7BoxedInt(initial);
else
return new LeftRight128JavaXBoxedInt(initial);
case LEFT_128:
if (useJava8Unsafe)
return new Left128Java8BoxedInt(initial);
else if (useJava7Unsafe)
return new Left128Java7BoxedInt(initial);
else
return new Left128JavaXBoxedInt(initial);
case RIGHT_128:
if (useJava8Unsafe)
return new Right128Java8BoxedInt(initial);
else if (useJava7Unsafe)
return new Right128Java7BoxedInt(initial);
else
return new Right128JavaXBoxedInt(initial);
case LEFT_RIGHT_256:
if (useJava8Unsafe)
return new LeftRight256Java8BoxedInt(initial);
else if (useJava7Unsafe)
return new LeftRight256Java7BoxedInt(initial);
else
return new LeftRight256JavaXBoxedInt(initial);
default:
throw new MatchError(padding);
}
}
public static BoxedLong newBoxedLong(long initial, BoxPaddingStrategy padding, boolean allowUnsafe, boolean allowJava8Intrinsics) {
boolean useJava7Unsafe = allowUnsafe && UnsafeAccess.IS_AVAILABLE;
boolean useJava8Unsafe = useJava7Unsafe && allowJava8Intrinsics && UnsafeAccess.HAS_JAVA8_INTRINSICS;
switch (padding) {
case NO_PADDING:
if (useJava8Unsafe)
return new NormalJava8BoxedLong(initial);
else if (useJava7Unsafe)
return new NormalJava7BoxedLong(initial);
else
return new NormalJavaXBoxedLong(initial);
case LEFT_64:
if (useJava8Unsafe)
return new Left64Java8BoxedLong(initial);
else if (useJava7Unsafe)
return new Left64Java7BoxedLong(initial);
else
return new Left64JavaXBoxedLong(initial);
case RIGHT_64:
if (useJava8Unsafe)
return new Right64Java8BoxedLong(initial);
else if (useJava7Unsafe)
return new Right64Java7BoxedLong(initial);
else
return new Right64JavaXBoxedLong(initial);
case LEFT_RIGHT_128:
if (useJava8Unsafe)
return new LeftRight128Java8BoxedLong(initial);
else if (useJava7Unsafe)
return new LeftRight128Java7BoxedLong(initial);
else
return new LeftRight128JavaXBoxedLong(initial);
case LEFT_128:
if (useJava8Unsafe)
return new Left128Java8BoxedLong(initial);
else if (useJava7Unsafe)
return new Left128Java7BoxedLong(initial);
else
return new Left128JavaXBoxedLong(initial);
case RIGHT_128:
if (useJava8Unsafe)
return new Right128Java8BoxedLong(initial);
else if (useJava7Unsafe)
return new Right128Java7BoxedLong(initial);
else
return new Right128JavaXBoxedLong(initial);
case LEFT_RIGHT_256:
if (useJava8Unsafe)
return new LeftRight256Java8BoxedLong(initial);
else if (useJava7Unsafe)
return new LeftRight256Java7BoxedLong(initial);
else
return new LeftRight256JavaXBoxedLong(initial);
default:
throw new MatchError(padding);
}
}
}