vendor/twig/twig/src/NodeVisitor/AbstractNodeVisitor.php line 28

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  1. <?php
  3. /*
  4. * This file is part of Twig.
  5. *
  6. * (c) Fabien Potencier
  7. *
  8. * For the full copyright and license information, please view the LICENSE
  9. * file that was distributed with this source code.
  10. */
  12. namespace Twig\NodeVisitor;
  14. use Twig\Environment;
  15. use Twig\Node\Node;
  17. /**
  18. * Used to make node visitors compatible with Twig 1.x and 2.x.
  19. *
  20. * @author Fabien Potencier <fabien@symfony.com>
  21. *
  22. * @deprecated since Twig 3.9 (to be removed in 4.0)
  23. */
  24. abstract class AbstractNodeVisitor implements NodeVisitorInterface
  25. {
  26. final public function enterNode(Node $node, Environment $env): Node
  27. {
  28. return $this->doEnterNode($node, $env);
  29. }
  31. final public function leaveNode(Node $node, Environment $env): ?Node
  32. {
  33. return $this->doLeaveNode($node, $env);
  34. }
  36. /**
  37. * Called before child nodes are visited.
  38. *
  39. * @return Node The modified node
  40. */
  41. abstract protected function doEnterNode(Node $node, Environment $env);
  43. /**
  44. * Called after child nodes are visited.
  45. *
  46. * @return Node|null The modified node or null if the node must be removed
  47. */
  48. abstract protected function doLeaveNode(Node $node, Environment $env);
  49. }