NodeConnectingVisitor
extends NodeVisitorAbstract
in package
Visitor that connects a child node to its parent node as well as its sibling nodes.
On the child node, the parent node can be accessed through
$node->getAttribute('parent'), the previous
node can be accessed through $node->getAttribute('previous'),
and the next node can be accessed through $node->getAttribute('next').
Table of Contents
- $previous : Node|null
- $stack : array<string|int, Node>
- afterTraverse() : null|array<string|int, Node>
- Called once after traversal.
- beforeTraverse() : null|array<string|int, Node>
- Called once before traversal.
- enterNode() : null|int|Node
- Called when entering a node.
- leaveNode() : null|int|Node|array<string|int, Node>
- Called when leaving a node.
Properties
$previous
private
Node|null
$previous
$stack
private
array<string|int, Node>
$stack
= []
Methods
afterTraverse()
Called once after traversal.
public
afterTraverse(array<string|int, mixed> $nodes) : null|array<string|int, Node>
Return value semantics:
- null: $nodes stays as-is
- otherwise: $nodes is set to the return value
Parameters
- $nodes : array<string|int, mixed>
-
Array of nodes
Return values
null|array<string|int, Node> —Array of nodes
beforeTraverse()
Called once before traversal.
public
beforeTraverse(array<string|int, mixed> $nodes) : null|array<string|int, Node>
Return value semantics:
- null: $nodes stays as-is
- otherwise: $nodes is set to the return value
Parameters
- $nodes : array<string|int, mixed>
-
Array of nodes
Return values
null|array<string|int, Node> —Array of nodes
enterNode()
Called when entering a node.
public
enterNode(Node $node) : null|int|Node
Return value semantics:
- null => $node stays as-is
- NodeTraverser::DONT_TRAVERSE_CHILDREN => Children of $node are not traversed. $node stays as-is
- NodeTraverser::STOP_TRAVERSAL => Traversal is aborted. $node stays as-is
- otherwise => $node is set to the return value
Parameters
- $node : Node
-
Node
Return values
null|int|Node —Replacement node (or special return value)
leaveNode()
Called when leaving a node.
public
leaveNode(Node $node) : null|int|Node|array<string|int, Node>
Return value semantics:
- null => $node stays as-is
- NodeTraverser::REMOVE_NODE => $node is removed from the parent array
- NodeTraverser::STOP_TRAVERSAL => Traversal is aborted. $node stays as-is
- array (of Nodes) => The return value is merged into the parent array (at the position of the $node)
- otherwise => $node is set to the return value
Parameters
- $node : Node
-
Node
Return values
null|int|Node|array<string|int, Node> —Replacement node (or special return value)