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<?php /* * This file is part of Psy Shell. * * (c) 2012-2015 Justin Hileman * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Psy\CodeCleaner; use PhpParser\Node; use PhpParser\Node\Stmt\Class_ as ClassStmt; use PhpParser\Node\Stmt\ClassMethod; use PhpParser\Node\Stmt\Namespace_ as NamespaceStmt; use Psy\Exception\FatalErrorException; /** * Validate that the old-style constructor function is not static. * * As of PHP 5.3.3, methods with the same name as the last element of a namespaced class name * will no longer be treated as constructor. This change doesn't affect non-namespaced classes. * * Validation of the __construct method ensures the PHP Parser. * * @author Martin Hasoň <martin.hason@gmail.com> */ class StaticConstructorPass extends CodeCleanerPass { private $isPHP533; private $namespace; public function __construct() { $this->isPHP533 = version_compare(PHP_VERSION, '5.3.3', '>='); } public function beforeTraverse(array $nodes) { $this->namespace = array(); } /** * Validate that the old-style constructor function is not static. * * @throws FatalErrorException if the old-style constructor function is static. * * @param Node $node */ public function enterNode(Node $node) { if ($node instanceof NamespaceStmt) { $this->namespace = isset($node->name) ? $node->name->parts : array(); } elseif ($node instanceof ClassStmt) { // Bail early if this is PHP 5.3.3 and we have a namespaced class if (!empty($this->namespace) && $this->isPHP533) { return; } $constructor = null; foreach ($node->stmts as $stmt) { if ($stmt instanceof ClassMethod) { // Bail early if we find a new-style constructor if ('__construct' === strtolower($stmt->name)) { return; } // We found a possible old-style constructor // (unless there is also a __construct method) if (strtolower($node->name) === strtolower($stmt->name)) { $constructor = $stmt; } } } if ($constructor && $constructor->isStatic()) { throw new FatalErrorException(sprintf( 'Constructor %s::%s() cannot be static', implode('\\', array_merge($this->namespace, (array) $node->name)), $constructor->name )); } } } }