4 * This file is part of the Symfony package.
6 * (c) Fabien Potencier <fabien@symfony.com>
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
12 namespace Symfony\Component\ClassLoader;
14 if (\PHP_VERSION_ID >= 70000) {
15 @trigger_error('The '.__NAMESPACE__.'\ClassCollectionLoader class is deprecated since Symfony 3.3 and will be removed in 4.0.', E_USER_DEPRECATED);
19 * ClassCollectionLoader.
21 * @author Fabien Potencier <fabien@symfony.com>
23 * @deprecated since version 3.3, to be removed in 4.0.
25 class ClassCollectionLoader
27 private static $loaded;
29 private static $useTokenizer = true;
32 * Loads a list of classes and caches them in one big file.
34 * @param array $classes An array of classes to load
35 * @param string $cacheDir A cache directory
36 * @param string $name The cache name prefix
37 * @param bool $autoReload Whether to flush the cache when the cache is stale or not
38 * @param bool $adaptive Whether to remove already declared classes or not
39 * @param string $extension File extension of the resulting file
41 * @throws \InvalidArgumentException When class can't be loaded
43 public static function load($classes, $cacheDir, $name, $autoReload, $adaptive = false, $extension = '.php')
45 // each $name can only be loaded once per PHP process
46 if (isset(self::$loaded[$name])) {
50 self::$loaded[$name] = true;
53 $declared = array_merge(get_declared_classes(), get_declared_interfaces(), get_declared_traits());
55 // don't include already declared classes
56 $classes = array_diff($classes, $declared);
58 // the cache is different depending on which classes are already declared
59 $name .= '-'.substr(hash('sha256', implode('|', $classes)), 0, 5);
62 $classes = array_unique($classes);
64 // cache the core classes
65 if (!is_dir($cacheDir) && !@mkdir($cacheDir, 0777, true) && !is_dir($cacheDir)) {
66 throw new \RuntimeException(sprintf('Class Collection Loader was not able to create directory "%s"', $cacheDir));
68 $cacheDir = rtrim(realpath($cacheDir) ?: $cacheDir, '/'.\DIRECTORY_SEPARATOR);
69 $cache = $cacheDir.'/'.$name.$extension;
74 $metadata = $cache.'.meta';
75 if (!is_file($metadata) || !is_file($cache)) {
78 $time = filemtime($cache);
79 $meta = unserialize(file_get_contents($metadata));
84 if ($meta[1] != $classes) {
87 foreach ($meta[0] as $resource) {
88 if (!is_file($resource) || filemtime($resource) > $time) {
98 if (!$reload && file_exists($cache)) {
104 $declared = array_merge(get_declared_classes(), get_declared_interfaces(), get_declared_traits());
107 $files = self::inline($classes, $cache, $declared);
110 // save the resources
111 self::writeCacheFile($metadata, serialize(array(array_values($files), $classes)));
116 * Generates a file where classes and their parents are inlined.
118 * @param array $classes An array of classes to load
119 * @param string $cache The file where classes are inlined
120 * @param array $excluded An array of classes that won't be inlined
122 * @return array The source map of inlined classes, with classes as keys and files as values
124 * @throws \RuntimeException When class can't be loaded
126 public static function inline($classes, $cache, array $excluded)
129 foreach (self::getOrderedClasses($excluded) as $class) {
130 $declared[$class->getName()] = true;
133 // cache the core classes
134 $cacheDir = \dirname($cache);
135 if (!is_dir($cacheDir) && !@mkdir($cacheDir, 0777, true) && !is_dir($cacheDir)) {
136 throw new \RuntimeException(sprintf('Class Collection Loader was not able to create directory "%s"', $cacheDir));
139 $spacesRegex = '(?:\s*+(?:(?:\#|//)[^\n]*+\n|/\*(?:(?<!\*/).)++)?+)*+';
140 $dontInlineRegex = <<<REGEX
142 ^<\?php\s.declare.\(.strict_types.=.1.\).;
143 | \b__halt_compiler.\(.\)
144 | \b__(?:DIR|FILE)__\b
147 $dontInlineRegex = str_replace('.', $spacesRegex, $dontInlineRegex);
149 $cacheDir = explode('/', str_replace(\DIRECTORY_SEPARATOR, '/', $cacheDir));
152 foreach (self::getOrderedClasses($classes) as $class) {
153 if (isset($declared[$class->getName()])) {
156 $declared[$class->getName()] = true;
158 $files[$class->getName()] = $file = $class->getFileName();
159 $c = file_get_contents($file);
161 if (preg_match($dontInlineRegex, $c)) {
162 $file = explode('/', str_replace(\DIRECTORY_SEPARATOR, '/', $file));
164 for ($i = 0; isset($file[$i], $cacheDir[$i]); ++$i) {
165 if ($file[$i] !== $cacheDir[$i]) {
170 $file = var_export(implode('/', $file), true);
172 $file = \array_slice($file, $i);
173 $file = str_repeat('../', \count($cacheDir) - $i).implode('/', $file);
174 $file = '__DIR__.'.var_export('/'.$file, true);
177 $c = "\nnamespace {require $file;}";
179 $c = preg_replace(array('/^\s*<\?php/', '/\?>\s*$/'), '', $c);
181 // fakes namespace declaration for global code
182 if (!$class->inNamespace()) {
183 $c = "\nnamespace\n{\n".$c."\n}\n";
186 $c = self::fixNamespaceDeclarations('<?php '.$c);
187 $c = preg_replace('/^\s*<\?php/', '', $c);
192 self::writeCacheFile($cache, '<?php '.$content);
198 * Adds brackets around each namespace if it's not already the case.
200 * @param string $source Namespace string
202 * @return string Namespaces with brackets
204 public static function fixNamespaceDeclarations($source)
206 if (!\function_exists('token_get_all') || !self::$useTokenizer) {
207 if (preg_match('/(^|\s)namespace(.*?)\s*;/', $source)) {
208 $source = preg_replace('/(^|\s)namespace(.*?)\s*;/', "$1namespace$2\n{", $source)."}\n";
216 $inNamespace = false;
217 $tokens = token_get_all($source);
219 for ($i = 0; isset($tokens[$i]); ++$i) {
220 $token = $tokens[$i];
221 if (!isset($token[1]) || 'b"' === $token) {
223 } elseif (\in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
226 } elseif (T_NAMESPACE === $token[0]) {
230 $rawChunk .= $token[1];
232 // namespace name and whitespaces
233 while (isset($tokens[++$i][1]) && \in_array($tokens[$i][0], array(T_WHITESPACE, T_NS_SEPARATOR, T_STRING))) {
234 $rawChunk .= $tokens[$i][1];
236 if ('{' === $tokens[$i]) {
237 $inNamespace = false;
240 $rawChunk = rtrim($rawChunk)."\n{";
243 } elseif (T_START_HEREDOC === $token[0]) {
244 $output .= self::compressCode($rawChunk).$token[1];
246 $token = $tokens[++$i];
247 $output .= isset($token[1]) && 'b"' !== $token ? $token[1] : $token;
248 } while (T_END_HEREDOC !== $token[0]);
251 } elseif (T_CONSTANT_ENCAPSED_STRING === $token[0]) {
252 $output .= self::compressCode($rawChunk).$token[1];
255 $rawChunk .= $token[1];
263 $output .= self::compressCode($rawChunk);
265 if (\PHP_VERSION_ID >= 70000) {
266 // PHP 7 memory manager will not release after token_get_all(), see https://bugs.php.net/70098
267 unset($tokens, $rawChunk);
275 * This method is only useful for testing.
277 public static function enableTokenizer($bool)
279 self::$useTokenizer = (bool) $bool;
283 * Strips leading & trailing ws, multiple EOL, multiple ws.
285 * @param string $code Original PHP code
287 * @return string compressed code
289 private static function compressCode($code)
292 array('/^\s+/m', '/\s+$/m', '/([\n\r]+ *[\n\r]+)+/', '/[ \t]+/'),
293 array('', '', "\n", ' '),
299 * Writes a cache file.
301 * @param string $file Filename
302 * @param string $content Temporary file content
304 * @throws \RuntimeException when a cache file cannot be written
306 private static function writeCacheFile($file, $content)
308 $dir = \dirname($file);
309 if (!is_writable($dir)) {
310 throw new \RuntimeException(sprintf('Cache directory "%s" is not writable.', $dir));
313 $tmpFile = tempnam($dir, basename($file));
315 if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
316 @chmod($file, 0666 & ~umask());
321 throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
325 * Gets an ordered array of passed classes including all their dependencies.
327 * @return \ReflectionClass[] An array of sorted \ReflectionClass instances (dependencies added if needed)
329 * @throws \InvalidArgumentException When a class can't be loaded
331 private static function getOrderedClasses(array $classes)
334 self::$seen = array();
335 foreach ($classes as $class) {
337 $reflectionClass = new \ReflectionClass($class);
338 } catch (\ReflectionException $e) {
339 throw new \InvalidArgumentException(sprintf('Unable to load class "%s"', $class));
342 $map = array_merge($map, self::getClassHierarchy($reflectionClass));
348 private static function getClassHierarchy(\ReflectionClass $class)
350 if (isset(self::$seen[$class->getName()])) {
354 self::$seen[$class->getName()] = true;
356 $classes = array($class);
358 while (($parent = $parent->getParentClass()) && $parent->isUserDefined() && !isset(self::$seen[$parent->getName()])) {
359 self::$seen[$parent->getName()] = true;
361 array_unshift($classes, $parent);
366 foreach ($classes as $c) {
367 foreach (self::resolveDependencies(self::computeTraitDeps($c), $c) as $trait) {
374 return array_merge(self::getInterfaces($class), $traits, $classes);
377 private static function getInterfaces(\ReflectionClass $class)
381 foreach ($class->getInterfaces() as $interface) {
382 $classes = array_merge($classes, self::getInterfaces($interface));
385 if ($class->isUserDefined() && $class->isInterface() && !isset(self::$seen[$class->getName()])) {
386 self::$seen[$class->getName()] = true;
394 private static function computeTraitDeps(\ReflectionClass $class)
396 $traits = $class->getTraits();
397 $deps = array($class->getName() => $traits);
398 while ($trait = array_pop($traits)) {
399 if ($trait->isUserDefined() && !isset(self::$seen[$trait->getName()])) {
400 self::$seen[$trait->getName()] = true;
401 $traitDeps = $trait->getTraits();
402 $deps[$trait->getName()] = $traitDeps;
403 $traits = array_merge($traits, $traitDeps);
411 * Dependencies resolution.
413 * This function does not check for circular dependencies as it should never
414 * occur with PHP traits.
416 * @param array $tree The dependency tree
417 * @param \ReflectionClass $node The node
418 * @param \ArrayObject $resolved An array of already resolved dependencies
419 * @param \ArrayObject $unresolved An array of dependencies to be resolved
421 * @return \ArrayObject The dependencies for the given node
423 * @throws \RuntimeException if a circular dependency is detected
425 private static function resolveDependencies(array $tree, $node, \ArrayObject $resolved = null, \ArrayObject $unresolved = null)
427 if (null === $resolved) {
428 $resolved = new \ArrayObject();
430 if (null === $unresolved) {
431 $unresolved = new \ArrayObject();
433 $nodeName = $node->getName();
435 if (isset($tree[$nodeName])) {
436 $unresolved[$nodeName] = $node;
437 foreach ($tree[$nodeName] as $dependency) {
438 if (!$resolved->offsetExists($dependency->getName())) {
439 self::resolveDependencies($tree, $dependency, $resolved, $unresolved);
442 $resolved[$nodeName] = $node;
443 unset($unresolved[$nodeName]);