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A convenient way to organize asynchronous code. Promises are a faster and more efficient version of JavaScript's Promise and Java's CompletionStage's.

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/*
 * Copyright (C) 2020 ActiveJ LLC.
 *
 * 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 io.activej.async.function;

import io.activej.async.process.AsyncExecutor;
import io.activej.async.process.AsyncExecutors;
import org.jetbrains.annotations.Contract;

public final class AsyncBiFunctions {

	@Contract(pure = true)
	public static  AsyncBiFunction buffer(AsyncBiFunction actual) {
		return buffer(1, Integer.MAX_VALUE, actual);
	}

	@Contract(pure = true)
	public static  AsyncBiFunction buffer(int maxParallelCalls, int maxBufferedCalls, AsyncBiFunction function) {
		return ofExecutor(AsyncExecutors.buffered(maxParallelCalls, maxBufferedCalls), function);
	}

	@Contract(pure = true)
	public static  AsyncBiFunction ofExecutor(AsyncExecutor executor, AsyncBiFunction function) {
		return (t, u) -> executor.execute(() -> function.apply(t, u));
	}
}