gameplayjdk / task-chain
Small library for the task chain pattern.
v1.0.1
2020-03-02 18:58 UTC
Requires
- php: >= 7.1
This package is auto-updated.
Last update: 2024-10-29 05:47:11 UTC
README
Small library for the task chain pattern.
That pattern allows building and defining sequential tasks in a clear and understandable, yet extensible way.
Installation
composer require gameplayjdk/task-chain
Usage
<?php require __DIR__ . '/vendor/autoload.php'; use TaskChain\TaskChain; use TaskChain\TaskInterface; $chain = new TaskChain(); /** * Class TaskAdd */ class TaskAdd implements TaskInterface { /** * @var int */ private $number; /** * TaskAdd constructor. * @param int $number */ public function __construct(int $number) { $this->number = $number; } /** * @inheritDoc */ public function accept($input): bool { return is_int($input); } /** * @inheritDoc */ public function process($input, callable $nextCallback) { echo print_r($this, true); echo PHP_EOL; return $nextCallback($input + $this->number); } } /** * Class TaskMul */ class TaskMul implements TaskInterface { /** * @var int */ private $number; /** * TaskMul constructor. * @param int $number */ public function __construct(int $number) { $this->number = $number; } /** * @inheritDoc */ public function accept($input): bool { return is_int($input); } /** * @inheritDoc */ public function process($input, callable $nextCallback) { echo print_r($this, true); echo PHP_EOL; return $nextCallback($input * $this->number); } } // Add "1", priority 2. $chain->add(new TaskAdd(1), 2); // Multiply by "2", priority 3. $chain->add(new TaskMul(2), 3); // Once a chain is ran, the priority information gets lost (with the built-in implementation). echo $chain->run(1); echo PHP_EOL;
License
It's MIT.