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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <[email protected]>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\ErrorHandler\ErrorEnhancer;
  13  
  14  use Symfony\Component\ErrorHandler\Error\FatalError;
  15  use Symfony\Component\ErrorHandler\Error\UndefinedMethodError;
  16  
  17  /**
  18   * @author Grégoire Pineau <[email protected]>
  19   */
  20  class UndefinedMethodErrorEnhancer implements ErrorEnhancerInterface
  21  {
  22      /**
  23       * {@inheritdoc}
  24       */
  25      public function enhance(\Throwable $error): ?\Throwable
  26      {
  27          if ($error instanceof FatalError) {
  28              return null;
  29          }
  30  
  31          $message = $error->getMessage();
  32          preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $message, $matches);
  33          if (!$matches) {
  34              return null;
  35          }
  36  
  37          $className = $matches[1];
  38          $methodName = $matches[2];
  39  
  40          $message = sprintf('Attempted to call an undefined method named "%s" of class "%s".', $methodName, $className);
  41  
  42          if ('' === $methodName || !class_exists($className) || null === $methods = get_class_methods($className)) {
  43              // failed to get the class or its methods on which an unknown method was called (for example on an anonymous class)
  44              return new UndefinedMethodError($message, $error);
  45          }
  46  
  47          $candidates = [];
  48          foreach ($methods as $definedMethodName) {
  49              $lev = levenshtein($methodName, $definedMethodName);
  50              if ($lev <= \strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
  51                  $candidates[] = $definedMethodName;
  52              }
  53          }
  54  
  55          if ($candidates) {
  56              sort($candidates);
  57              $last = array_pop($candidates).'"?';
  58              if ($candidates) {
  59                  $candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
  60              } else {
  61                  $candidates = '"'.$last;
  62              }
  63  
  64              $message .= "\nDid you mean to call ".$candidates;
  65          }
  66  
  67          return new UndefinedMethodError($message, $error);
  68      }
  69  }