Recursive argument parsing

Allows for recursive argument parsing for neon DI generation.

Consider this example:
sampleView:
    class: \View\ComponentView('samplename',[ data = @dataProvider::retrieveData() ])

Right now, the "@dataProvider::retrieveData()" is being considered a stdClass and is parsed " as is" - as a string. This little fix aims for seeking the scope recursively, parsing the call correctly.