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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 Psy\Exception\FatalErrorException; /** * The abstract class pass handles abstract classes and methods, complaining if there are too few or too many of either. */ class AbstractClassPass extends CodeCleanerPass { private $class; private $abstractMethods; /** * @throws RuntimeException if the node is an abstract function with a body. * * @param Node $node */ public function enterNode(Node $node) { if ($node instanceof ClassStmt) { $this->class = $node; $this->abstractMethods = array(); } elseif ($node instanceof ClassMethod) { if ($node->isAbstract()) { $name = sprintf('%s::%s', $this->class->name, $node->name); $this->abstractMethods[] = $name; if ($node->stmts !== null) { throw new FatalErrorException(sprintf('Abstract function %s cannot contain body', $name)); } } } } /** * @throws RuntimeException if the node is a non-abstract class with abstract methods. * * @param Node $node */ public function leaveNode(Node $node) { if ($node instanceof ClassStmt) { $count = count($this->abstractMethods); if ($count > 0 && !$node->isAbstract()) { throw new FatalErrorException(sprintf( 'Class %s contains %d abstract method%s must therefore be declared abstract or implement the remaining methods (%s)', $node->name, $count, ($count === 0) ? '' : 's', implode(', ', $this->abstractMethods) )); } } } }