--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ClassLoader;
+
+@trigger_error('The '.__NAMESPACE__.'\DebugClassLoader class is deprecated since version 2.4 and will be removed in 3.0. Use the Symfony\Component\Debug\DebugClassLoader class instead.', E_USER_DEPRECATED);
+
+/**
+ * Autoloader checking if the class is really defined in the file found.
+ *
+ * The DebugClassLoader will wrap all registered autoloaders providing a
+ * findFile method and will throw an exception if a file is found but does
+ * not declare the class.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Christophe Coevoet <stof@notk.org>
+ *
+ * @deprecated since version 2.4, to be removed in 3.0.
+ * Use {@link \Symfony\Component\Debug\DebugClassLoader} instead.
+ */
+class DebugClassLoader
+{
+ private $classFinder;
+
+ /**
+ * Constructor.
+ *
+ * @param object $classFinder
+ */
+ public function __construct($classFinder)
+ {
+ $this->classFinder = $classFinder;
+ }
+
+ /**
+ * Gets the wrapped class loader.
+ *
+ * @return object a class loader instance
+ */
+ public function getClassLoader()
+ {
+ return $this->classFinder;
+ }
+
+ /**
+ * Replaces all autoloaders implementing a findFile method by a DebugClassLoader wrapper.
+ */
+ public static function enable()
+ {
+ if (!is_array($functions = spl_autoload_functions())) {
+ return;
+ }
+
+ foreach ($functions as $function) {
+ spl_autoload_unregister($function);
+ }
+
+ foreach ($functions as $function) {
+ if (is_array($function) && !$function[0] instanceof self && method_exists($function[0], 'findFile')) {
+ $function = array(new static($function[0]), 'loadClass');
+ }
+
+ spl_autoload_register($function);
+ }
+ }
+
+ /**
+ * Unregisters this instance as an autoloader.
+ */
+ public function unregister()
+ {
+ spl_autoload_unregister(array($this, 'loadClass'));
+ }
+
+ /**
+ * Finds a file by class name.
+ *
+ * @param string $class A class name to resolve to file
+ *
+ * @return string|null
+ */
+ public function findFile($class)
+ {
+ return $this->classFinder->findFile($class) ?: null;
+ }
+
+ /**
+ * Loads the given class or interface.
+ *
+ * @param string $class The name of the class
+ *
+ * @return bool|null True, if loaded
+ *
+ * @throws \RuntimeException
+ */
+ public function loadClass($class)
+ {
+ if ($file = $this->classFinder->findFile($class)) {
+ require $file;
+
+ if (!class_exists($class, false) && !interface_exists($class, false) && (!function_exists('trait_exists') || !trait_exists($class, false))) {
+ if (false !== strpos($class, '/')) {
+ throw new \RuntimeException(sprintf('Trying to autoload a class with an invalid name "%s". Be careful that the namespace separator is "\" in PHP, not "/".', $class));
+ }
+
+ throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
+ }
+
+ return true;
+ }
+ }
+}