Civi/Core/Event/EventPrinter.php

   1 <?php
   2
   3
   4 namespace Civi\Core\Event;
   5
   6 /**
   7  * This provides some rarely used debug utilities.
   8  *
   9  * @package Civi\Core\Event
  10  */
  11 class EventPrinter {
  12
  13   /**
  14    * Prepare a name to identify a callable element.
  15    *
  16    * @param mixed $callback
  17    * @return string
  18    */
  19   public static function formatName($callback): string {
  20     $normalizeNamespace = function($symbol) {
  21       return $symbol{0} === '\\' ? substr($symbol, 1) : $symbol;
  22     };
  23     if (is_array($callback)) {
  24       [$a, $b] = $callback;
  25       if (is_object($a)) {
  26         return $normalizeNamespace(get_class($a)) . "->$b(\$e)";
  27       }
  28       elseif (is_string($a)) {
  29         return $normalizeNamespace($a) . "::$b(\$e)";
  30       }
  31     }
  32     elseif (is_string($callback)) {
  33       return $normalizeNamespace($callback) . '(\$e)';
  34     }
  35     elseif ($callback instanceof ServiceListener || $callback instanceof HookStyleListener) {
  36       return (string) $callback;
  37     }
  38     else {
  39       try {
  40         $f = new \ReflectionFunction($callback);
  41         return 'closure<' . $f->getFileName() . '@' . $f->getStartLine() . '>($e)';
  42       }
  43       catch (\ReflectionException $e) {
  44       }
  45     }
  46
  47     return 'unidentified';
  48   }
  49
  50 }