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- <?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\Form;
- use Symfony\Component\Form\Exception\ExceptionInterface;
- use Symfony\Component\Form\Exception\InvalidArgumentException;
- use Symfony\Component\Form\Exception\LogicException;
- use Symfony\Component\Form\Exception\UnexpectedTypeException;
- /**
- * The central registry of the Form component.
- *
- * @author Bernhard Schussek <bschussek@gmail.com>
- */
- class FormRegistry implements FormRegistryInterface
- {
- /**
- * Extensions.
- *
- * @var FormExtensionInterface[]
- */
- private $extensions = [];
- /**
- * @var ResolvedFormTypeInterface[]
- */
- private $types = [];
- /**
- * @var FormTypeGuesserInterface|false|null
- */
- private $guesser = false;
- /**
- * @var ResolvedFormTypeFactoryInterface
- */
- private $resolvedTypeFactory;
- private $checkedTypes = [];
- /**
- * @param FormExtensionInterface[] $extensions An array of FormExtensionInterface
- *
- * @throws UnexpectedTypeException if any extension does not implement FormExtensionInterface
- */
- public function __construct(array $extensions, ResolvedFormTypeFactoryInterface $resolvedTypeFactory)
- {
- foreach ($extensions as $extension) {
- if (!$extension instanceof FormExtensionInterface) {
- throw new UnexpectedTypeException($extension, 'Symfony\Component\Form\FormExtensionInterface');
- }
- }
- $this->extensions = $extensions;
- $this->resolvedTypeFactory = $resolvedTypeFactory;
- }
- /**
- * {@inheritdoc}
- */
- public function getType(string $name)
- {
- if (!isset($this->types[$name])) {
- $type = null;
- foreach ($this->extensions as $extension) {
- if ($extension->hasType($name)) {
- $type = $extension->getType($name);
- break;
- }
- }
- if (!$type) {
- // Support fully-qualified class names
- if (!class_exists($name)) {
- throw new InvalidArgumentException(sprintf('Could not load type "%s": class does not exist.', $name));
- }
- if (!is_subclass_of($name, 'Symfony\Component\Form\FormTypeInterface')) {
- throw new InvalidArgumentException(sprintf('Could not load type "%s": class does not implement "Symfony\Component\Form\FormTypeInterface".', $name));
- }
- $type = new $name();
- }
- $this->types[$name] = $this->resolveType($type);
- }
- return $this->types[$name];
- }
- /**
- * Wraps a type into a ResolvedFormTypeInterface implementation and connects it with its parent type.
- */
- private function resolveType(FormTypeInterface $type): ResolvedFormTypeInterface
- {
- $typeExtensions = [];
- $parentType = $type->getParent();
- $fqcn = \get_class($type);
- if (isset($this->checkedTypes[$fqcn])) {
- $types = implode(' > ', array_merge(array_keys($this->checkedTypes), [$fqcn]));
- throw new LogicException(sprintf('Circular reference detected for form type "%s" (%s).', $fqcn, $types));
- }
- $this->checkedTypes[$fqcn] = true;
- try {
- foreach ($this->extensions as $extension) {
- $typeExtensions = array_merge(
- $typeExtensions,
- $extension->getTypeExtensions($fqcn)
- );
- }
- return $this->resolvedTypeFactory->createResolvedType(
- $type,
- $typeExtensions,
- $parentType ? $this->getType($parentType) : null
- );
- } finally {
- unset($this->checkedTypes[$fqcn]);
- }
- }
- /**
- * {@inheritdoc}
- */
- public function hasType(string $name)
- {
- if (isset($this->types[$name])) {
- return true;
- }
- try {
- $this->getType($name);
- } catch (ExceptionInterface $e) {
- return false;
- }
- return true;
- }
- /**
- * {@inheritdoc}
- */
- public function getTypeGuesser()
- {
- if (false === $this->guesser) {
- $guessers = [];
- foreach ($this->extensions as $extension) {
- $guesser = $extension->getTypeGuesser();
- if ($guesser) {
- $guessers[] = $guesser;
- }
- }
- $this->guesser = !empty($guessers) ? new FormTypeGuesserChain($guessers) : null;
- }
- return $this->guesser;
- }
- /**
- * {@inheritdoc}
- */
- public function getExtensions()
- {
- return $this->extensions;
- }
- }
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