creating a compound custom rule that modifies multiple nodes at a time

[terrafrost]

Say I had this piece of code:

$rsa = new \phpseclib\Crypt\RSA;
$rsa->loadKey('...');

What kind of custom rule - if any - could convert that to this?:

$rsa = new \phpseclib3\Crypt\PublicKeyLoader::load('...');

Like I could probably get the refactor method to recognize when to do the change by making it so that each successive call to that method modifies a class variable boolean and that after x successive calls if that class variable boolean is still true then we know it's a match. But just as the refactor method only accepts a single Node as a parameter it also only returns a single Node. So like I could change the name of loadKey to load but I could also change the constructor on the previous line it's unclear to me how I'd do that.

Any ideas? Or is what I'm trying to do just not possible with Rector?

Thanks!

[TomasVotruba]

Hi, you can do this even with single node.

Hook into StmtsAwareInterface and look for current + previous stmt that matches your 2 nodes.
Then remove those nodes and replace with a single one, the assignment.

Check core rules that work with StmtsAwareInterface to get better understanding, how to handle this 👍