Deferred.php

<?php

/**
 * Copyright 2023 Jeremy Presutti <Jeremy@Presutti.us>
 *
 * 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.
 */

declare(strict_types=1);

namespace Feast;
abstract class Deferred
{
    protected bool $cancelled = false;
    abstract public function deferredAction(): void;
    
    public function __destruct()
    {
        if ( $this->cancelled === false ) {
            $this->deferredAction();
        }
    }

    /**
     * Cancel this deferred call.
     * @return void
     */
    public final function cancelDeferral(): void
    {
        $this->cancelled = true;
    }
}