compare version using PHP_VERSION_ID

To let opcode caches optimize cached code, the `PHP_VERSION_ID`
constant is used to detect the current PHP version instead of calling
`version_compare()` with `PHP_VERSION`.

ApcUniversalClassLoader.php

@@ -37,8 +37,8 @@ namespace Symfony\Component\ClassLoader;
  *     // register classes with namespaces
  *     $loader->registerNamespaces(array(
  *         'Symfony\Component' => __DIR__.'/component',
- *         'Symfony'           => __DIR__.'/framework',
- *         'Sensio'            => array(__DIR__.'/src', __DIR__.'/vendor'),
+ *         'Symfony' => __DIR__.'/framework',
+ *         'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
  *     ));
  *
  *     // register a library using the PEAR naming convention

CHANGELOG.md

@@ -1,11 +1,6 @@
 CHANGELOG
 =========
 
-2.4.0
------
-
- * deprecated the DebugClassLoader as it has been moved to the Debug component instead
-
 2.3.0
 -----
 

ClassCollectionLoader.php

@@ -53,7 +53,7 @@ class ClassCollectionLoader
             $classes = array_diff($classes, $declared);
 
             // the cache is different depending on which classes are already declared
-            $name = $name.'-'.substr(hash('sha256', implode('|', $classes)), 0, 5);
+            $name = $name.'-'.substr(md5(implode('|', $classes)), 0, 5);
         }
 
         $classes = array_unique($classes);

ClassLoader.php

@@ -107,7 +107,7 @@ class ClassLoader
      */
     public function setUseIncludePath($useIncludePath)
     {
-        $this->useIncludePath = $useIncludePath;
+        $this->useIncludePath = (bool) $useIncludePath;
     }
 
     /**

ClassMapGenerator.php

@@ -11,8 +11,10 @@
 
 namespace Symfony\Component\ClassLoader;
 
-if (!defined('T_TRAIT')) {
-    define('T_TRAIT', 0);
+if (PHP_VERSION_ID >= 50400) {
+    define('SYMFONY_TRAIT', T_TRAIT);
+} else {
+    define('SYMFONY_TRAIT', 0);
 }
 
 /**
@@ -86,7 +88,7 @@ class ClassMapGenerator
     private static function findClasses($path)
     {
         $contents = file_get_contents($path);
-        $tokens   = token_get_all($contents);
+        $tokens = token_get_all($contents);
 
         $classes = array();
 
@@ -113,7 +115,7 @@ class ClassMapGenerator
                     break;
                 case T_CLASS:
                 case T_INTERFACE:
-                case T_TRAIT:
+                case SYMFONY_TRAIT:
                     // Find the classname
                     while (($t = $tokens[++$i]) && is_array($t)) {
                         if (T_STRING === $t[0]) {

DebugClassLoader.php

@@ -22,8 +22,6 @@ namespace Symfony\Component\ClassLoader;
  * @author Christophe Coevoet <stof@notk.org>
  *
  * @api
- *
- * @deprecated Deprecated since version 2.4, to be removed in 3.0. Use the DebugClassLoader provided by the Debug component instead.
  */
 class DebugClassLoader
 {
@@ -41,16 +39,6 @@ class DebugClassLoader
         $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.
      */

README.md

@@ -9,51 +9,63 @@ standard or the PEAR naming convention.
 
 First, register the autoloader:
 
-    require_once __DIR__.'/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
+```php
+require_once __DIR__.'/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
 
-    use Symfony\Component\ClassLoader\UniversalClassLoader;
+use Symfony\Component\ClassLoader\UniversalClassLoader;
 
-    $loader = new UniversalClassLoader();
-    $loader->register();
+$loader = new UniversalClassLoader();
+$loader->register();
+```
 
 Then, register some namespaces with the `registerNamespace()` method:
 
-    $loader->registerNamespace('Symfony', __DIR__.'/src');
-    $loader->registerNamespace('Monolog', __DIR__.'/vendor/monolog/src');
+```php
+$loader->registerNamespace('Symfony', __DIR__.'/src');
+$loader->registerNamespace('Monolog', __DIR__.'/vendor/monolog/src');
+```
 
 The `registerNamespace()` method takes a namespace prefix and a path where to
 look for the classes as arguments.
 
 You can also register a sub-namespaces:
 
-    $loader->registerNamespace('Doctrine\\Common', __DIR__.'/vendor/doctrine-common/lib');
+```php
+$loader->registerNamespace('Doctrine\\Common', __DIR__.'/vendor/doctrine-common/lib');
+```
 
 The order of registration is significant and the first registered namespace
 takes precedence over later registered one.
 
 You can also register more than one path for a given namespace:
 
-    $loader->registerNamespace('Symfony', array(__DIR__.'/src', __DIR__.'/symfony/src'));
+```php
+$loader->registerNamespace('Symfony', array(__DIR__.'/src', __DIR__.'/symfony/src'));
+```
 
 Alternatively, you can use the `registerNamespaces()` method to register more
 than one namespace at once:
 
-    $loader->registerNamespaces(array(
-        'Symfony'          => array(__DIR__.'/src', __DIR__.'/symfony/src'),
-        'Doctrine\\Common' => __DIR__.'/vendor/doctrine-common/lib',
-        'Doctrine'         => __DIR__.'/vendor/doctrine/lib',
-        'Monolog'          => __DIR__.'/vendor/monolog/src',
-    ));
+```php
+$loader->registerNamespaces(array(
+    'Symfony' => array(__DIR__.'/src', __DIR__.'/symfony/src'),
+    'Doctrine\\Common' => __DIR__.'/vendor/doctrine-common/lib',
+    'Doctrine' => __DIR__.'/vendor/doctrine/lib',
+    'Monolog' => __DIR__.'/vendor/monolog/src',
+));
+```
 
 For better performance, you can use the APC based version of the universal
 class loader:
 
-    require_once __DIR__.'/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
-    require_once __DIR__.'/src/Symfony/Component/ClassLoader/ApcUniversalClassLoader.php';
+```php
+require_once __DIR__.'/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
+require_once __DIR__.'/src/Symfony/Component/ClassLoader/ApcUniversalClassLoader.php';
 
-    use Symfony\Component\ClassLoader\ApcUniversalClassLoader;
+use Symfony\Component\ClassLoader\ApcUniversalClassLoader;
 
-    $loader = new ApcUniversalClassLoader('apc.prefix.');
+$loader = new ApcUniversalClassLoader('apc.prefix.');
+```
 
 Furthermore, the component provides tools to aggregate classes into a single
 file, which is especially useful to improve performance on servers that do not

Tests/ApcUniversalClassLoaderTest.php

@@ -58,10 +58,8 @@ class ApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
     public function getLoadClassTests()
     {
         return array(
-           array('\\Apc\\Namespaced\\Foo', '\\Apc\\Namespaced\\Foo',   '->loadClass() loads Apc\Namespaced\Foo class'),
+           array('\\Apc\\Namespaced\\Foo', 'Apc\\Namespaced\\Foo',   '->loadClass() loads Apc\Namespaced\Foo class'),
            array('Apc_Pearlike_Foo',    'Apc_Pearlike_Foo',      '->loadClass() loads Apc_Pearlike_Foo class'),
-           array('\\Apc\\Namespaced\\Bar', '\\Apc\\Namespaced\\Bar', '->loadClass() loads Apc\Namespaced\Bar class with a leading slash'),
-           array('Apc_Pearlike_Bar',    '\\Apc_Pearlike_Bar',    '->loadClass() loads Apc_Pearlike_Bar class with a leading slash'),
        );
     }
 
@@ -82,9 +80,9 @@ class ApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
     public function getLoadClassFromFallbackTests()
     {
         return array(
-           array('\\Apc\\Namespaced\\Baz',    '\\Apc\\Namespaced\\Baz',    '->loadClass() loads Apc\Namespaced\Baz class'),
+           array('\\Apc\\Namespaced\\Baz',    'Apc\\Namespaced\\Baz',    '->loadClass() loads Apc\Namespaced\Baz class'),
            array('Apc_Pearlike_Baz',       'Apc_Pearlike_Baz',       '->loadClass() loads Apc_Pearlike_Baz class'),
-           array('\\Apc\\Namespaced\\FooBar', '\\Apc\\Namespaced\\FooBar', '->loadClass() loads Apc\Namespaced\Baz class from fallback dir'),
+           array('\\Apc\\Namespaced\\FooBar', 'Apc\\Namespaced\\FooBar', '->loadClass() loads Apc\Namespaced\Baz class from fallback dir'),
            array('Apc_Pearlike_FooBar',    'Apc_Pearlike_FooBar',    '->loadClass() loads Apc_Pearlike_Baz class from fallback dir'),
        );
     }
@@ -110,7 +108,7 @@ class ApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
                    'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
                ),
-               '\Apc\NamespaceCollision\A\Foo',
+               'Apc\NamespaceCollision\A\Foo',
                '->loadClass() loads NamespaceCollision\A\Foo from alpha.',
            ),
            array(
@@ -118,7 +116,7 @@ class ApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
                    'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
                ),
-               '\Apc\NamespaceCollision\A\Bar',
+               'Apc\NamespaceCollision\A\Bar',
                '->loadClass() loads NamespaceCollision\A\Bar from alpha.',
            ),
            array(
@@ -126,7 +124,7 @@ class ApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
                    'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
                ),
-               '\Apc\NamespaceCollision\A\B\Foo',
+               'Apc\NamespaceCollision\A\B\Foo',
                '->loadClass() loads NamespaceCollision\A\B\Foo from beta.',
            ),
            array(
@@ -134,7 +132,7 @@ class ApcUniversalClassLoaderTest extends \PHPUnit_Framework_TestCase
                    'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
                    'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
                ),
-               '\Apc\NamespaceCollision\A\B\Bar',
+               'Apc\NamespaceCollision\A\B\Bar',
                '->loadClass() loads NamespaceCollision\A\B\Bar from beta.',
            ),
        );

Tests/ClassCollectionLoaderTest.php

@@ -22,7 +22,7 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
 {
     public function testTraitDependencies()
     {
-        if (version_compare(phpversion(), '5.4', '<')) {
+        if (PHP_VERSION_ID < 50400) {
             $this->markTestSkipped('Requires PHP > 5.4');
 
             return;
@@ -100,7 +100,7 @@ class ClassCollectionLoaderTest extends \PHPUnit_Framework_TestCase
      */
     public function testClassWithTraitsReordering(array $classes)
     {
-        if (version_compare(phpversion(), '5.4', '<')) {
+        if (PHP_VERSION_ID < 50400) {
             $this->markTestSkipped('Requires PHP > 5.4');
 
             return;

Tests/ClassLoaderTest.php

@@ -72,7 +72,7 @@ class ClassLoaderTest extends \PHPUnit_Framework_TestCase
     public function getLoadNonexistentClassTests()
     {
         return array(
-            array('\\Pearlike3_Bar', '\\Pearlike3_Bar', '->loadClass() loads non existing Pearlike3_Bar class with a leading slash'),
+            array('\\Pearlike3_Bar', '\\Pearlike3_Bar', '->loadClass() loads non exising Pearlike3_Bar class with a leading slash'),
         );
     }
 

Tests/ClassMapGeneratorTest.php

@@ -72,9 +72,9 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
     {
         $data = array(
             array(__DIR__.'/Fixtures/Namespaced', array(
-                'Namespaced\\Bar'          => realpath(__DIR__).'/Fixtures/Namespaced/Bar.php',
-                'Namespaced\\Foo'          => realpath(__DIR__).'/Fixtures/Namespaced/Foo.php',
-                'Namespaced\\Baz'          => realpath(__DIR__).'/Fixtures/Namespaced/Baz.php',
+                'Namespaced\\Bar' => realpath(__DIR__).'/Fixtures/Namespaced/Bar.php',
+                'Namespaced\\Foo' => realpath(__DIR__).'/Fixtures/Namespaced/Foo.php',
+                'Namespaced\\Baz' => realpath(__DIR__).'/Fixtures/Namespaced/Baz.php',
                 'Namespaced\\WithComments' => realpath(__DIR__).'/Fixtures/Namespaced/WithComments.php',
                 ),
             ),
@@ -85,26 +85,26 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
                 'NamespaceCollision\\C\\B\\Foo' => realpath(__DIR__).'/Fixtures/beta/NamespaceCollision/C/B/Foo.php',
             )),
             array(__DIR__.'/Fixtures/Pearlike', array(
-                'Pearlike_Foo'          => realpath(__DIR__).'/Fixtures/Pearlike/Foo.php',
-                'Pearlike_Bar'          => realpath(__DIR__).'/Fixtures/Pearlike/Bar.php',
-                'Pearlike_Baz'          => realpath(__DIR__).'/Fixtures/Pearlike/Baz.php',
+                'Pearlike_Foo' => realpath(__DIR__).'/Fixtures/Pearlike/Foo.php',
+                'Pearlike_Bar' => realpath(__DIR__).'/Fixtures/Pearlike/Bar.php',
+                'Pearlike_Baz' => realpath(__DIR__).'/Fixtures/Pearlike/Baz.php',
                 'Pearlike_WithComments' => realpath(__DIR__).'/Fixtures/Pearlike/WithComments.php',
             )),
             array(__DIR__.'/Fixtures/classmap', array(
-                'Foo\\Bar\\A'             => realpath(__DIR__).'/Fixtures/classmap/sameNsMultipleClasses.php',
-                'Foo\\Bar\\B'             => realpath(__DIR__).'/Fixtures/classmap/sameNsMultipleClasses.php',
-                'A'                       => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
-                'Alpha\\A'                => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
-                'Alpha\\B'                => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
-                'Beta\\A'                 => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
-                'Beta\\B'                 => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
+                'Foo\\Bar\\A' => realpath(__DIR__).'/Fixtures/classmap/sameNsMultipleClasses.php',
+                'Foo\\Bar\\B' => realpath(__DIR__).'/Fixtures/classmap/sameNsMultipleClasses.php',
+                'A' => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
+                'Alpha\\A' => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
+                'Alpha\\B' => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
+                'Beta\\A' => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
+                'Beta\\B' => realpath(__DIR__).'/Fixtures/classmap/multipleNs.php',
                 'ClassMap\\SomeInterface' => realpath(__DIR__).'/Fixtures/classmap/SomeInterface.php',
-                'ClassMap\\SomeParent'    => realpath(__DIR__).'/Fixtures/classmap/SomeParent.php',
-                'ClassMap\\SomeClass'     => realpath(__DIR__).'/Fixtures/classmap/SomeClass.php',
+                'ClassMap\\SomeParent' => realpath(__DIR__).'/Fixtures/classmap/SomeParent.php',
+                'ClassMap\\SomeClass' => realpath(__DIR__).'/Fixtures/classmap/SomeClass.php',
             )),
         );
 
-        if (version_compare(PHP_VERSION, '5.4', '>=')) {
+        if (PHP_VERSION_ID >= 50400) {
             $data[] = array(__DIR__.'/Fixtures/php5.4', array(
                 'TFoo' => __DIR__.'/Fixtures/php5.4/traits.php',
                 'CFoo' => __DIR__.'/Fixtures/php5.4/traits.php',
@@ -120,6 +120,10 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
 
     public function testCreateMapFinderSupport()
     {
+        if (!class_exists('Symfony\\Component\\Finder\\Finder')) {
+            $this->markTestSkipped('Finder component is not available');
+        }
+
         $finder = new \Symfony\Component\Finder\Finder();
         $finder->files()->in(__DIR__.'/Fixtures/beta/NamespaceCollision');
 

Tests/DebugClassLoaderTest.php

@@ -0,0 +1,52 @@
+<?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\Tests;
+
+use Symfony\Component\ClassLoader\ClassLoader;
+use Symfony\Component\ClassLoader\DebugClassLoader;
+
+class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
+{
+    private $loader;
+
+    protected function setUp()
+    {
+        $this->loader = new ClassLoader();
+        spl_autoload_register(array($this->loader, 'loadClass'));
+    }
+
+    protected function tearDown()
+    {
+        spl_autoload_unregister(array($this->loader, 'loadClass'));
+    }
+
+    public function testIdempotence()
+    {
+        DebugClassLoader::enable();
+        DebugClassLoader::enable();
+
+        $functions = spl_autoload_functions();
+        foreach ($functions as $function) {
+            if (is_array($function) && $function[0] instanceof DebugClassLoader) {
+                $reflClass = new \ReflectionClass($function[0]);
+                $reflProp = $reflClass->getProperty('classFinder');
+                $reflProp->setAccessible(true);
+
+                $this->assertNotInstanceOf('Symfony\Component\ClassLoader\DebugClassLoader', $reflProp->getValue($function[0]));
+
+                return;
+            }
+        }
+
+        throw new \Exception('DebugClassLoader did not register');
+    }
+}

UniversalClassLoader.php

@@ -32,8 +32,8 @@ namespace Symfony\Component\ClassLoader;
  *     // register classes with namespaces
  *     $loader->registerNamespaces(array(
  *         'Symfony\Component' => __DIR__.'/component',
- *         'Symfony'           => __DIR__.'/framework',
- *         'Sensio'            => array(__DIR__.'/src', __DIR__.'/vendor'),
+ *         'Symfony' => __DIR__.'/framework',
+ *         'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
  *     ));
  *
  *     // register a library using the PEAR naming convention
@@ -74,7 +74,7 @@ class UniversalClassLoader
      */
     public function useIncludePath($useIncludePath)
     {
-        $this->useIncludePath = $useIncludePath;
+        $this->useIncludePath = (bool) $useIncludePath;
     }
 
     /**

composer.json

@@ -28,7 +28,7 @@
     "target-dir": "Symfony/Component/ClassLoader",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.4-dev"
+            "dev-master": "2.3-dev"
         }
     }
 }