Store and retrieve nodes by address

[onet4]

Hi there,

Is it possible to retrieve a node address (path) in visitor class callback methods? I'd like to re-access nodes with cached data.

I'm looking for something like $node->address in the code below. I know such a property does not exist.

class MyNodeAddressCollectionVisitor extends NodeVisitorAbstract
{
    public function leaveNode(Node $node) {

        $nodeAddress = $node->address;

    }
}

Also I'm looking for a way to retrieve a node object by specifying its address,

    $node = $stmts->getNode($nodeAddress);

[nikic]

I don't really understand what you mean by "node address" and how it differs from the node itself.

[onet4]

You know DOM nodes can be retrieved with XPath. I'm looking for a mechanism similar to it.

[nikic]

Ah, I see. This library currently doesn't have anything like that.

[onet4]

Will be great if it's possible.

[TomasVotruba]

There is actually a class that allow you something similar:

$nodeAddress = spl_object_hash($node);
        
$nodeFinder = new PhpParser\NodeFinder;
$foundNode = $nodeFinder->findFirst($nodes, function (Node $node) use ($nodeAddress) {
    return spl_object_hash($node) === $nodeAddress;  
});