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<?php |
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namespace SpareParts\Enum\Converter; |
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use SpareParts\Enum\Enum; |
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/** |
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* Converts Enum values to custom string values using map |
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* |
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* Usage: |
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* $converter = new MapConverter( |
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* [ |
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* 'totally_opened' => WindowState::OPEN(), |
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* 'totally_closed' => WindowState::CLOSED(), |
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* ] |
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* ); |
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* |
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* $converter->toEnum('totally_closed') // returns WindowState::CLOSED() instance |
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* |
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* $converter->fromEnum(WindowState::CLOSED()) // returns 'totally_closed' string |
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*/ |
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class MapConverter implements IConverter |
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{ |
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/** |
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* @var array mapValue => enumInstance |
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*/ |
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protected $scalarMap = []; |
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/** |
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* @var array enumString => mapValue |
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*/ |
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protected $enumMap = []; |
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/** |
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* @param array $map |
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* @throws ConverterSetupException |
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*/ |
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public function __construct(array $map) |
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{ |
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$this->enumMap = $map; |
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foreach ($map as $value => $enum) { |
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if (!($enum instanceof Enum)) { |
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$ident = is_object($enum) ? get_class($enum) : print_r($enum, true); |
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throw new ConverterSetupException(sprintf('Class %s is not a valid Enum. (doesnt extend Enum class)', $ident)); |
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} |
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$this->scalarMap[(string) $enum] = $value; |
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} |
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} |
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/** |
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* @param mixed $value |
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* @return Enum |
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* @throws UnableToConvertException |
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*/ |
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public function toEnum($value) |
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{ |
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if (!is_scalar($value)) { |
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throw new UnableToConvertException(sprintf('Unable to convert: Value %s is not a scalar value.', print_r($value, true))); |
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} |
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View Code Duplication |
if (!isset($this->enumMap[$value])) { |
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throw new UnableToConvertException(sprintf('Unable to convert: Value %s not found in possible options: [%s]', $value, implode(', ', array_keys($this->enumMap)))); |
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} |
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return $this->enumMap[$value]; |
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} |
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/** |
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* @param Enum $enum |
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* @return string |
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* @throws UnableToConvertException |
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*/ |
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public function fromEnum(Enum $enum) |
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{ |
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View Code Duplication |
if (!isset($this->scalarMap[(string) $enum])) { |
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throw new UnableToConvertException( |
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sprintf( |
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'Unable to convert: Enum %s::%s() not found in possible options: [%s]', |
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get_class($enum), |
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(string) $enum, |
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implode(', ', array_keys($this->enumMap)) |
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) |
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); |
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} |
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return $this->scalarMap[(string) $enum]; |
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} |
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} |
SpareParts /
Enum
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.