<?php

namespace Amp;

/**
 * A NullCancellation can be used to avoid conditionals to check whether a cancellation has been provided.
 *
 * Instead of writing
 *
 * ```php
 * if ($cancellation) {
 *     $cancellation->throwIfRequested();
 * }
 * ```
 *
 * potentially multiple times, it allows writing
 *
 * ```php
 * $cancellation = $cancellation ?? new NullCancellation;
 *
 * // ...
 *
 * $cancellation->throwIfRequested();
 * ```
 *
 * instead.
 */
final class NullCancellation implements Cancellation
{
	public function subscribe(\Closure $callback): string
	{
		return "null-cancellation";
	}


	public function unsubscribe(string $id): void
	{
	}


	public function isRequested(): bool
	{
		return false;
	}


	public function throwIfRequested(): void
	{
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzQ0NTI5NzQzNDMxMTM5NCA5NTI1NjEwNjg3MDEwMzYgMjk2MDkyNzMyNjQyODU5MQ==