I don't know if that's part of the scope of PHP-Parser, but it would be useful (at least for me as it would greatly simplify the code for my PHP CS fixer -- http://cs.sensiolabs.org/) to be able to have nodes for whitespace. This should probably be an option as most of the time, you don't care about whitespace, and also because it would add many nodes.