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<?php |
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namespace DavidIanBonner\Enumerated; |
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use Exception; |
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use Illuminate\Support\Collection; |
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use Illuminate\Support\Facades\Lang; |
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use ReflectionClass; |
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abstract class Enum |
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{ |
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/** @var string */ |
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private $value; |
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/** @var array */ |
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private static $loaded = []; |
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/** @var array */ |
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protected static $values = []; |
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abstract public function langKey(): string; |
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/** |
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* @param string $value |
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*/ |
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public function __construct($value) |
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{ |
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$this->validateValue($value); |
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$this->value = $value; |
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} |
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/** |
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* Return the enumerators values. |
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* |
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* @param bool $keys |
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* @return array |
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*/ |
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public static function allValues($keys = false): array |
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{ |
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$caller = get_called_class(); |
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if (!isset(static::$values[$caller])) { |
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static::$values[$caller] = static::getDeclaredConstants(); |
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} |
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return $keys ? static::$values[$caller] : array_values(static::$values[$caller]); |
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} |
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/** |
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* Return a collection of the declared values. |
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* |
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* @param bool $keys |
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* @return Illuminate\Support\Collection |
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*/ |
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public static function collect($keys = false): Collection |
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{ |
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return Collection::make(static::allValues($keys)); |
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} |
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/** |
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* Return an instance of a desired value. |
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* |
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* @param string $value |
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* @return DavidIanBonner\Enumerated\Enum |
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*/ |
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public static function ofType($value): self |
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{ |
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$key = get_called_class() . ':' . $value; |
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if (!isset(self::$loaded[$key])) { |
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self::$loaded[$key] = new static($value); |
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} |
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// We can safely return the instance from the loaded array as |
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// validation is carried out in the constructor and the |
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// $loaded property is private. |
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return self::$loaded[$key]; |
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} |
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/** |
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* Return the value. |
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* |
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* @return string |
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*/ |
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public function value(): string |
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{ |
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return $this->value; |
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} |
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/** |
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* Validate the value. |
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* |
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* @param mixed $value |
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* @throws DavidIanBonner\Enumerated\EnumNotValidException |
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* @return void |
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*/ |
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public static function validateValue($value) |
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{ |
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if (!in_array($value, static::allValues())) { |
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throw new EnumNotValidException("The value [{$value}] is not a valid type."); |
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} |
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} |
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/** |
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* Check the value is valid and return a bool. |
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* |
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* @param mixed $value |
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* @return bool |
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*/ |
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public static function isValid($value): bool |
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{ |
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try { |
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static::validateValue($value); |
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} catch (Exception $e) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Get the declared constants. |
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* |
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* @return array |
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*/ |
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protected static function getDeclaredConstants(): array |
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{ |
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$reflection = new ReflectionClass(get_called_class()); |
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return (array) $reflection->getConstants(); |
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} |
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/** |
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* @return array |
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*/ |
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public static function toSelect(): array |
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{ |
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return static::collect() |
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->mapWithKeys(function ($key) { |
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$outcome = self::ofType($key); |
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return [$outcome->value() => $outcome->line()]; |
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}) |
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->toArray(); |
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} |
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/** |
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* @return string |
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*/ |
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9 |
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public function line(): string |
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{ |
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return Lang::get( |
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implode('.', [ |
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$this->langKeyPrefix() . 'enum', |
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$this->langKey(), |
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str_replace('_', '-', $this->value()), |
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]) |
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); |
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} |
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6 |
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public function langKeyPrefix(): string |
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{ |
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return ''; |
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} |
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} |
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davidianbonner /
enumerated
