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View File Name :
DeprecationCollector.php
*/ final class DeprecationCollector { private $twig; public function __construct(Environment $twig) { $this->twig = $twig; } /** * Returns deprecations for templates contained in a directory. * * @param string $dir A directory where templates are stored * @param string $ext Limit the loaded templates by extension * * @return array An array of deprecations */ public function collectDir(string $dir, string $ext = '.twig'): array { $iterator = new \RegexIterator( new \RecursiveIteratorIterator( new \RecursiveDirectoryIterator($dir), \RecursiveIteratorIterator::LEAVES_ONLY ), '{'.preg_quote($ext).'$}' ); return $this->collect(new TemplateDirIterator($iterator)); } /** * Returns deprecations for passed templates. * * @param \Traversable $iterator An iterator of templates (where keys are template names and values the contents of the template) * * @return array An array of deprecations */ public function collect(\Traversable $iterator): array { $deprecations = []; set_error_handler(function ($type, $msg) use (&$deprecations) { if (\E_USER_DEPRECATED === $type) { $deprecations[] = $msg; } }); foreach ($iterator as $name => $contents) { try { $this->twig->parse($this->twig->tokenize(new Source($contents, $name))); } catch (SyntaxError $e) { // ignore templates containing syntax errors } } restore_error_handler(); return $deprecations; } }