SmartWeb\ModuleTesting\ExpressionLanguage\Functions\Call

Complexity

Total Complexity

3

Size/Duplication

Total Lines	49
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	init()	0	4	1
A	provideCompiler()	0	7	1
A	provideEvaluator()	0	17	1

<?php


namespace SmartWeb\ModuleTesting\ExpressionLanguage\Functions;

use Closure;
use SmartWeb\ModuleTesting\Contracts\ExpressionLanguage\Validator;
use SmartWeb\ModuleTesting\ExpressionLanguage\CallbackValidator;
use function call_user_func_array;


/**
 * Expression function for invoking custom callbacks
 *
 * @package SmartWeb\ModuleTesting\ExpressionLanguage\Functions
 */
class Call extends BaseExpressionFunction
{
    
    /**
     * @var Validator
     */
    private $callbackValidator;
    
    /**
     * @inheritDoc
     */
    protected function init()
    {
        $this->callbackValidator = new CallbackValidator("ExpressionFunction '{$this->getName()}' expects parameter 1 to be a valid callback");
    }
    
    /**
     * @inheritDoc
     */
    protected function provideCompiler() : callable
    {
        return function (...$args) : string
        {
            return sprintf('call_user_func(%s)', implode(', ', $args));
        };
    }
    
    /**
     * @inheritDoc
     */
    protected function provideEvaluator() : callable
    {
        /**
         * @param array            $arguments
         * @param callable|Closure $callback
         *
         * @return mixed
         */
        $evaluator = function (array $arguments, $callback)
        {
            $this->callbackValidator->validate($callback);
            
            return call_user_func_array($callback, $arguments['params']);
        };
        
        return $evaluator;
    }
    
}