yvoyer / php-state

src/Callbacks/NullCallback.php

<?php declare(strict_types=1);

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namespace Star\Component\State\Callbacks;

use Star\Component\State\InvalidStateTransitionException;
use Star\Component\State\StateMachine;

final class NullCallback implements TransitionCallback

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{

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    /**

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     * @param mixed $context

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     * @param StateMachine $machine

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     */

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    public function beforeStateChange($context, StateMachine $machine): void

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    {

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    }

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    /**

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     * @param mixed $context

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     * @param StateMachine $machine

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     */

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    public function afterStateChange($context, StateMachine $machine): void
    {

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    }

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    /**

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     * @param InvalidStateTransitionException $exception

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     * @param mixed $context

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     * @param StateMachine $machine

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     *
     * @return string

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     */

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    public function onFailure(InvalidStateTransitionException $exception, $context, StateMachine $machine): string
    {

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        throw new \RuntimeException('Method ' . __METHOD__ . ' should never be called.');

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    }

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}

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