BooleanNodeDefinition.php 1.3 KB

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  1. <?php
  2. /*
  3. * This file is part of the Symfony package.
  4. *
  5. * (c) Fabien Potencier <fabien@symfony.com>
  6. *
  7. * For the full copyright and license information, please view the LICENSE
  8. * file that was distributed with this source code.
  9. */
  10. namespace Symfony\Component\Config\Definition\Builder;
  11. use Symfony\Component\Config\Definition\BooleanNode;
  12. use Symfony\Component\Config\Definition\Exception\InvalidDefinitionException;
  13. /**
  14. * This class provides a fluent interface for defining a node.
  15. *
  16. * @author Johannes M. Schmitt <schmittjoh@gmail.com>
  17. */
  18. class BooleanNodeDefinition extends ScalarNodeDefinition
  19. {
  20. /**
  21. * {@inheritdoc}
  22. */
  23. public function __construct(?string $name, NodeParentInterface $parent = null)
  24. {
  25. parent::__construct($name, $parent);
  26. $this->nullEquivalent = true;
  27. }
  28. /**
  29. * Instantiate a Node.
  30. *
  31. * @return BooleanNode The node
  32. */
  33. protected function instantiateNode()
  34. {
  35. return new BooleanNode($this->name, $this->parent, $this->pathSeparator);
  36. }
  37. /**
  38. * {@inheritdoc}
  39. *
  40. * @throws InvalidDefinitionException
  41. */
  42. public function cannotBeEmpty()
  43. {
  44. throw new InvalidDefinitionException('->cannotBeEmpty() is not applicable to BooleanNodeDefinition.');
  45. }
  46. }