Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Debug\FatalErrorHandler;
Chris@0: 
Chris@0: use Symfony\Component\Debug\Exception\FatalErrorException;
Chris@0: use Symfony\Component\Debug\Exception\UndefinedMethodException;
Chris@0: 
Chris@0: /**
Chris@0:  * ErrorHandler for undefined methods.
Chris@0:  *
Chris@0:  * @author Grégoire Pineau <lyrixx@lyrixx.info>
Chris@0:  */
Chris@0: class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
Chris@0: {
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function handleError(array $error, FatalErrorException $exception)
Chris@0:     {
Chris@0:         preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $error['message'], $matches);
Chris@0:         if (!$matches) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         $className = $matches[1];
Chris@0:         $methodName = $matches[2];
Chris@0: 
Chris@0:         $message = sprintf('Attempted to call an undefined method named "%s" of class "%s".', $methodName, $className);
Chris@0: 
Chris@0:         if (!class_exists($className) || null === $methods = get_class_methods($className)) {
Chris@0:             // failed to get the class or its methods on which an unknown method was called (for example on an anonymous class)
Chris@0:             return new UndefinedMethodException($message, $exception);
Chris@0:         }
Chris@0: 
Chris@17:         $candidates = [];
Chris@0:         foreach ($methods as $definedMethodName) {
Chris@0:             $lev = levenshtein($methodName, $definedMethodName);
Chris@17:             if ($lev <= \strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
Chris@0:                 $candidates[] = $definedMethodName;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($candidates) {
Chris@0:             sort($candidates);
Chris@0:             $last = array_pop($candidates).'"?';
Chris@0:             if ($candidates) {
Chris@0:                 $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
Chris@0:             } else {
Chris@0:                 $candidates = '"'.$last;
Chris@0:             }
Chris@0: 
Chris@0:             $message .= "\nDid you mean to call ".$candidates;
Chris@0:         }
Chris@0: 
Chris@0:         return new UndefinedMethodException($message, $exception);
Chris@0:     }
Chris@0: }