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<?php |
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/** |
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* Closure for Craft CMS |
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* |
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* Allows you to use arrow function closures in Twig |
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* |
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* @link https://nystudio107.com |
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* @copyright Copyright (c) 2022 nystudio107 |
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*/ |
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namespace nystudio107\closure; |
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use Craft; |
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use craft\console\Application as CraftConsoleApp; |
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use craft\events\CreateTwigEvent; |
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use craft\web\Application as CraftWebApp; |
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use craft\web\twig\Environment; |
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use craft\web\View; |
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use nystudio107\closure\helpers\Reflection as ReflectionHelper; |
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use nystudio107\closure\twig\ClosureExpressionParser; |
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use ReflectionException; |
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use Twig\Environment as TwigEnvironment; |
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use Twig\Parser; |
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use yii\base\BootstrapInterface; |
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use yii\base\Event; |
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use yii\base\Module; |
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/** |
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* @author nystudio107 |
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* @package Closure |
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* @since 1.0.0 |
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*/ |
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class Closure extends Module implements BootstrapInterface |
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{ |
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// Constants |
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// ========================================================================= |
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public const ID = 'closure'; |
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// Protected Static Properties |
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// ========================================================================= |
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protected bool $closureAdded = false; |
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// Public Methods |
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// ========================================================================= |
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/** |
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* @inerhitdoc |
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*/ |
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public function __construct($id = self::ID, $parent = null, $config = []) |
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{ |
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/** |
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* Explicitly set the $id parameter, as earlier versions of Yii2 look for a |
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* default parameter, and depend on $id being explicitly set: |
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* https://github.com/yiisoft/yii2/blob/f3d1534125c9c3dfe8fa65c28a4be5baa822e721/framework/di/Container.php#L436-L448 |
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*/ |
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parent::__construct($id, $parent, $config); |
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} |
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/** |
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* @inerhitDoc |
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*/ |
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public function bootstrap($app) |
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{ |
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// Only bootstrap if this is a CraftWebApp |
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if (!($app instanceof CraftWebApp || $app instanceof CraftConsoleApp)) { |
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return; |
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} |
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// Do nothing if we're running a version of Twig that has baked in support for "arrow functions everywhere" |
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// @phpstan-ignore-next-line |
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if (version_compare(TwigEnvironment::VERSION, '3.15.0', '>=')) { |
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Craft::warning('Craft Closure not loaded because this version of Twig already supports arrow functions everywhere. You can safely uninstall Craft Closure by removing it from your composer.json', __METHOD__); |
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return; |
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} |
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// Set the instance of this module class, so we can later access it with `Closure::getInstance()` |
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static::setInstance($this); |
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// Configure our module |
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$this->configureModule(); |
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// Register our event handlers |
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$this->registerEventHandlers(); |
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Craft::info('Closure module bootstrapped', __METHOD__); |
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} |
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// Protected Methods |
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// ========================================================================= |
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/** |
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* Add our ClosureExpressionParser to default $allowArrow = true to let |
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* arrow function closures work outside of Twig filter contexts |
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* |
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* @param Environment|null $twig |
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* @return void |
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*/ |
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public function addClosure(?Environment $twig = null): void |
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{ |
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// Custom environment if specified, otherwise Craft default |
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$twig = $twig ?? Craft::$app->getView()->getTwig(); |
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// Get the parser object used by Twig |
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try { |
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$parserReflection = ReflectionHelper::getReflectionProperty($twig, 'parser'); |
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} catch (ReflectionException $e) { |
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Craft::error($e->getMessage(), __METHOD__); |
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return; |
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} |
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$parserReflection->setAccessible(true); |
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$parser = $parserReflection->getValue($twig); |
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if ($parser === null) { |
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$parser = new Parser($twig); |
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$parserReflection->setValue($twig, $parser); |
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} |
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// Create the ClosureExpressionParser object and set the parser to use it |
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try { |
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$expressionParserReflection = ReflectionHelper::getReflectionProperty($parser, 'expressionParser'); |
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} catch (ReflectionException $e) { |
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Craft::error($e->getMessage(), __METHOD__); |
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return; |
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} |
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$expressionParserReflection->setAccessible(true); |
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$expressionParser = new ClosureExpressionParser($parser, $twig); |
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$expressionParserReflection->setValue($parser, $expressionParser); |
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} |
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/** |
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* Configure our module |
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* |
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* @return void |
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*/ |
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protected function configureModule(): void |
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{ |
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// Register our module |
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Craft::$app->setModule($this->id, $this); |
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} |
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/** |
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* Registers our event handlers |
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* |
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* @return void |
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*/ |
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protected function registerEventHandlers(): void |
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{ |
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// Handler: View::EVENT_AFTER_CREATE_TWIG |
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Event::on( |
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View::class, |
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View::EVENT_AFTER_CREATE_TWIG, |
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fn(CreateTwigEvent $event) => $this->addClosure($event->twig) |
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); |
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} |
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} |
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