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<?php |
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/** |
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* Part of SplTypes package. |
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* |
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* (c) Adrien Loyant <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Ducks\Component\SplTypes; |
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/** |
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* Trait used for enum emulation |
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* |
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* @phpstan-require-extends SplEnum |
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* @phpstan-require-implements SplEnumSingletonable |
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* |
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* @psalm-api |
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*/ |
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trait SplEnumSingletonTrait |
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{ |
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/** |
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* internal instance of enum |
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* |
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* @var SplEnumSingletonable[] |
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* |
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* @phpstan-var array<string,SplEnumSingletonable> |
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*/ |
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private static array $instances = []; |
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/** |
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* Return the singleton enum instance. |
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* |
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* @param string $name |
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* |
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* @return SplEnumSingletonable |
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* |
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* @throws \Error if $name is not a case |
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* |
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* @see SplEnum::__callStatic() |
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*/ |
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public static function getInstance(string $name): SplEnumSingletonable |
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{ |
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if (!isset(self::$instances[$name])) { |
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/** @var SplEnumSingletonable $instance */ |
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$instance = static::$name(); |
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self::$instances[$name] = $instance; |
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} |
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return self::$instances[$name]; |
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} |
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} |
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ducks-project /
spl-types
