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<?php |
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namespace SmartWeb\ModuleTesting\ExpressionLanguage\Functions; |
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use Illuminate\Support\Str; |
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use Symfony\Component\ExpressionLanguage\ExpressionFunction; |
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use function class_basename; |
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/** |
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* Base class for expression functions. |
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* |
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* @inheritDoc |
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* |
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* @package SmartWeb\ModuleTesting\ExpressionLanguage\Functions |
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*/ |
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abstract class BaseExpressionFunction extends ExpressionFunction |
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{ |
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/** |
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* @var string |
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*/ |
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protected $name; |
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/** |
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* @var callable |
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*/ |
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private $compiler; |
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/** |
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* @var callable |
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*/ |
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private $evaluator; |
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/** |
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* BaseExpressionFunction constructor. |
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*/ |
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final public function __construct() |
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{ |
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$this->init(); |
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} |
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/** |
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* Initialize the ExpressionFunction |
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* |
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* @return void |
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*/ |
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abstract protected function init(); |
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/** |
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* @return string |
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*/ |
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private function resolveName() : string |
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{ |
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return $this->name = $this->name ?? Str::camel(class_basename($this)); |
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} |
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/** |
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* @return callable A callable able to compile the function |
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*/ |
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private function resolveCompiler() : callable |
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{ |
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return $this->compiler = $this->compiler ?? $this->provideCompiler(); |
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} |
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/** |
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* @return callable A callable able to evaluate the function |
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*/ |
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private function resolveEvaluator() : callable |
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{ |
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return $this->evaluator = $this->evaluator ?? $this->provideEvaluator(); |
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} |
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/** |
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* @return callable |
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*/ |
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abstract protected function provideCompiler() : callable; |
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/** |
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* @return callable |
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*/ |
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abstract protected function provideEvaluator() : callable; |
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/** |
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* @return string |
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*/ |
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final public function getName() : string |
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{ |
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return $this->resolveName(); |
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} |
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/** |
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* @return callable |
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*/ |
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final public function getCompiler() : callable |
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{ |
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return $this->resolveCompiler(); |
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} |
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/** |
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* @return callable |
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*/ |
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final public function getEvaluator() : callable |
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{ |
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return $this->resolveEvaluator(); |
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} |
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} |
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