110 lines
3.0 KiB
PHP
110 lines
3.0 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\ClassLoader;
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/**
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* Autoloader checking if the class is really defined in the file found.
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*
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* The DebugClassLoader will wrap all registered autoloaders providing a
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* findFile method and will throw an exception if a file is found but does
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* not declare the class.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Christophe Coevoet <stof@notk.org>
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*
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* @api
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*/
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class DebugClassLoader
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{
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private $classFinder;
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/**
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* Constructor.
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*
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* @param object $classFinder
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*
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* @api
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*/
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public function __construct($classFinder)
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{
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$this->classFinder = $classFinder;
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}
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/**
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* Replaces all autoloaders implementing a findFile method by a DebugClassLoader wrapper.
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*/
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public static function enable()
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{
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if (!is_array($functions = spl_autoload_functions())) {
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return;
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}
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foreach ($functions as $function) {
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spl_autoload_unregister($function);
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}
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foreach ($functions as $function) {
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if (is_array($function) && !$function[0] instanceof self && method_exists($function[0], 'findFile')) {
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$function = array(new static($function[0]), 'loadClass');
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}
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spl_autoload_register($function);
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}
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}
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/**
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* Unregisters this instance as an autoloader.
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*/
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public function unregister()
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{
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spl_autoload_unregister(array($this, 'loadClass'));
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}
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/**
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* Finds a file by class name
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*
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* @param string $class A class name to resolve to file
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*
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* @return string|null
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*/
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public function findFile($class)
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{
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return $this->classFinder->findFile($class);
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}
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/**
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* Loads the given class or interface.
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*
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* @param string $class The name of the class
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*
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* @return Boolean|null True, if loaded
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*
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* @throws \RuntimeException
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*/
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public function loadClass($class)
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{
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if ($file = $this->classFinder->findFile($class)) {
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require $file;
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if (!class_exists($class, false) && !interface_exists($class, false) && (!function_exists('trait_exists') || !trait_exists($class, false))) {
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if (false !== strpos($class, '/')) {
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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));
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}
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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));
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}
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return true;
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}
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}
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}
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