diff options
Diffstat (limited to 'vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php')
-rw-r--r-- | vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php b/vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php new file mode 100644 index 000000000..b98d2bfa6 --- /dev/null +++ b/vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/ParentConnectingVisitor.php @@ -0,0 +1,41 @@ +<?php declare(strict_types=1); + +namespace PhpParser\NodeVisitor; + +use function array_pop; +use function count; +use PhpParser\Node; +use PhpParser\NodeVisitorAbstract; + +/** + * Visitor that connects a child node to its parent node. + * + * On the child node, the parent node can be accessed through + * <code>$node->getAttribute('parent')</code>. + */ +final class ParentConnectingVisitor extends NodeVisitorAbstract +{ + /** + * @var Node[] + */ + private $stack = []; + + public function beforeTraverse(array $nodes) + { + $this->stack = []; + } + + public function enterNode(Node $node) + { + if (!empty($this->stack)) { + $node->setAttribute('parent', $this->stack[count($this->stack) - 1]); + } + + $this->stack[] = $node; + } + + public function leaveNode(Node $node) + { + array_pop($this->stack); + } +} |