SQLParser\Node\Traverser\NodeTraverser

Complexity

Total Complexity

3

Size/Duplication

Total Lines	32
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes	2
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	addVisitor()	0	4	1
A	walk()	0	4	1

<?php

namespace SQLParser\Node\Traverser;

use SQLParser\Node\NodeInterface;

/**
 * This class can be used to traverse the tree of nodes.
 */
class NodeTraverser
{
    const DONT_TRAVERSE_CHILDREN = 'DONT_TRAVERSE_CHILDREN';
    const REMOVE_NODE = 'REMOVE_NODE';

    private $visitor;

    public function __construct()
    {
        $this->visitor = new CompositeVisitor();
    }

    /**
     * Registers a new visitor with this traverser.
     *
     * @param VisitorInterface $visitor
     */
    public function addVisitor(VisitorInterface $visitor)
    {
        $this->visitor->addVisitor($visitor);
    }

    /**
     * Starts traversing the tree, calling each visitor on each node.
     *
     * @param NodeInterface $node
     */
    public function walk(NodeInterface $node)
    {
        $node->walk($this->visitor);
    }
}