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<?php declare( strict_types = 1 ); use Wikimedia\Assert\Assert; // We want to allow dynamic property creation on any object. // phpcs:disable MediaWiki.Commenting.FunctionComment.ObjectTypeHintParam /** * Utility class for dealing with dynamic property creation in tests. * * PHP 8.2 has deprecated dynamic property creation for objects not explicitly annotated with #[AllowDynamicProperties]. * The recommended migration path for associating arbitrary data with objects is WeakMap, which is only available starting from PHP 8.0. * As long as MediaWiki still supports PHP 7.4, this requires a compatibility layer for dynamic property creation on classes * that do not support it, by utilizing WeakMap when available and falling back to regular dynamic property creation * on PHP 7.4. * * This class can be removed and its usages converted into direct WeakMap usage once MediaWiki only supports PHP 8.0 and above. * * @since 1.42 (also backported to 1.39.8, 1.40.4 and 1.41.2) * @internal Only for use by core PHPUnit setup functionality. */ class DynamicPropertyTestHelper { /** * Associative array of WeakMaps holding dynamic properties keyed by property name. * @var WeakMap[] */ private static $properties = []; /** * Get the value of the given dynamic property from the given object. * @param object $owner Object to fetch the dynamic property for * @param string $propName Name of the dynamic property to get * @return mixed The value of the dynamic property, or null if not set */ public static function getDynamicProperty( object $owner, string $propName ) { if ( class_exists( WeakMap::class ) ) { self::$properties[$propName] ??= new WeakMap(); return self::$properties[$propName][$owner] ?? null; } return $owner->$propName ?? null; } /** * Set the given dynamic property to the given value on an object. * @param object $owner Object to set the dynamic property on * @param string $propName Name of the dynamic property to set * @param mixed $value The property value to set; must not be null * @return void */ public static function setDynamicProperty( object $owner, string $propName, $value ): void { // getDynamicProperty() uses a null return value as an idiom for "property does not exist", // which precludes supporting null values for dynamic properties without a separate method // to check for the existence of a possibly nullable property. // Since existing test cases do not seem to extensively rely on setting null values, // explicitly forbid them here. Assert::parameter( $value !== null, '$value', 'must not be null' ); if ( class_exists( WeakMap::class ) ) { self::$properties[$propName] ??= new WeakMap(); self::$properties[$propName][$owner] = $value; } else { $owner->$propName = $value; } } /** * Unset the given dynamic property on the given object. * @param object $owner Object to unset the dynamic property on * @param string $propName Name of the dynamic property to unset * @return void */ public static function unsetDynamicProperty( object $owner, string $propName ): void { if ( class_exists( WeakMap::class ) ) { self::$properties[$propName] ??= new WeakMap(); unset( self::$properties[$propName][$owner] ); } else { unset( $owner->$propName ); } } } // phpcs:enable
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