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<?php |
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namespace WPEmerge\Helpers; |
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use Closure; |
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use WPEmerge\Exceptions\Exception; |
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use WPEmerge\Facades\Framework; |
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/** |
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* Represent a generic handler - a Closure or a class method to be resolved from the service container |
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*/ |
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class Handler { |
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/** |
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* Parsed handler |
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* |
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* @var array|Closure|null |
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*/ |
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protected $handler = null; |
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/** |
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* Constructor |
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* |
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* @throws Exception |
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* @param string|Closure $raw_handler |
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* @param string|null $default_method |
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*/ |
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public function __construct( $raw_handler, $default_method = null ) { |
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$handler = $this->parse( $raw_handler, $default_method ); |
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if ( $handler === null ) { |
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throw new Exception( 'No or invalid handler provided.' ); |
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} |
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$this->handler = $handler; |
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} |
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/** |
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* Parse a raw handler to a Closure or a [class, method] array |
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* |
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* @param string|Closure $raw_handler |
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* @param string|null $default_method |
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* @return array|Closure|null |
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*/ |
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protected function parse( $raw_handler, $default_method = null ) { |
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if ( $raw_handler instanceof Closure ) { |
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return $raw_handler; |
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} |
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return $this->parseFromString( $raw_handler, $default_method ); |
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} |
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/** |
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* Parse a raw string handler to a [class, method] array |
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* |
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* @param string $raw_handler |
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* @param string|null $default_method |
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* @return array|null |
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*/ |
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protected function parseFromString( $raw_handler, $default_method = null ) { |
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$handlerPieces = array_filter( preg_split( '/@|::/', $raw_handler, 2 ) ); |
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if ( $default_method !== null && count( $handlerPieces ) === 1 ) { |
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return [ |
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'class' => $handlerPieces[0], |
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'method' => $default_method, |
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]; |
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} |
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if ( count( $handlerPieces ) === 2 ) { |
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return [ |
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'class' => $handlerPieces[0], |
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'method' => $handlerPieces[1], |
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]; |
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} |
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return null; |
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} |
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/** |
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* Get the parsed handler |
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* |
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* @return array|Closure|null |
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*/ |
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public function get() { |
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return $this->handler; |
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} |
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/** |
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* Execute the parsed handler with any provided arguments and return the result |
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* |
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* @param mixed ...$arguments |
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* @return mixed |
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*/ |
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public function execute() { |
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$arguments = func_get_args(); |
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if ( $this->handler instanceof Closure ) { |
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return call_user_func_array( $this->handler, $arguments ); |
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} |
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$class = $this->handler['class']; |
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$method = $this->handler['method']; |
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$instance = Framework::instantiate( $class ); |
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return call_user_func_array( [$instance, $method], $arguments ); |
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} |
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} |
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htmlburger /
wpemerge
