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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** |
| 6 | * This file is part of php-fast-forward/event-dispatcher. |
| 7 | * |
| 8 | * This source file is subject to the license bundled |
| 9 | * with this source code in the file LICENSE. |
| 10 | * |
| 11 | * @copyright Copyright (c) 2025-2026 Felipe Sayão Lobato Abreu <github@mentordosnerds.com> |
| 12 | * @license https://opensource.org/licenses/MIT MIT License |
| 13 | * |
| 14 | * @see https://github.com/php-fast-forward/event-dispatcher |
| 15 | * @see https://github.com/php-fast-forward |
| 16 | * @see https://datatracker.ietf.org/doc/html/rfc2119 |
| 17 | */ |
| 18 | |
| 19 | namespace FastForward\EventDispatcher\Event; |
| 20 | |
| 21 | use Throwable; |
| 22 | use Exception; |
| 23 | use Psr\EventDispatcher\StoppableEventInterface; |
| 24 | |
| 25 | /** |
| 26 | * Represent a listener failure as a dispatchable event. |
| 27 | * |
| 28 | * The dispatcher emits this event when a listener throws while handling another event. |
| 29 | */ |
| 30 | class ErrorEvent extends Exception implements StoppableEventInterface |
| 31 | { |
| 32 | /** |
| 33 | * Listener that raised the throwable. |
| 34 | * |
| 35 | * @var callable |
| 36 | */ |
| 37 | private $listener; |
| 38 | |
| 39 | /** |
| 40 | * Create an error event from a failed listener invocation. |
| 41 | * |
| 42 | * @param object $event original event being dispatched |
| 43 | * @param callable $listener listener that raised the throwable |
| 44 | * @param Throwable $throwable throwable raised by the listener |
| 45 | * @param bool $propagationStopped initial propagation state for this error event |
| 46 | */ |
| 47 | public function __construct( |
| 48 | private object $event, |
| 49 | callable $listener, |
| 50 | Throwable $throwable, |
| 51 | private bool $propagationStopped = false |
| 52 | ) { |
| 53 | parent::__construct($throwable->getMessage(), $throwable->getCode(), $throwable); |
| 54 | $this->listener = $listener; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Determine whether propagation for this error event has been stopped. |
| 59 | * |
| 60 | * @return bool whether propagation is currently stopped |
| 61 | */ |
| 62 | public function isPropagationStopped(): bool |
| 63 | { |
| 64 | return $this->propagationStopped; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Mark this error event as stopped. |
| 69 | */ |
| 70 | public function stopPropagation(): void |
| 71 | { |
| 72 | $this->propagationStopped = true; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Get the original event that was being dispatched. |
| 77 | * |
| 78 | * @return object event instance associated with the listener failure |
| 79 | */ |
| 80 | public function getEvent(): object |
| 81 | { |
| 82 | return $this->event; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Get the listener that raised the throwable. |
| 87 | * |
| 88 | * @return callable listener associated with this error event |
| 89 | */ |
| 90 | public function getListener(): callable |
| 91 | { |
| 92 | return $this->listener; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Get the throwable that caused this error event. |
| 97 | * |
| 98 | * @return Throwable throwable stored as the previous exception |
| 99 | */ |
| 100 | public function getThrowable(): Throwable |
| 101 | { |
| 102 | return $this->getPrevious(); |
| 103 | } |
| 104 | } |