Access to Node#source or Location#source?

[ioquatix]

I would like to access the source name, similar to how in the parser gem we can access node.source_buffer.name which is usually the file path.

Is that possible or can we make it possible? Maybe we can attach a name or some other metadata to the source object?

[kddnewton]

Do you need to do it through the node? It's available on the parse result, which is meant to funnel that kind of logic through that top-level interface. I was hoping to keep the fact that there is a source on the node/location as kind of opaque.

[ioquatix]

I understand your design and I'm okay if you don't want to expose it, but I don't store the parse results in my own AST, only the node.

Right now:

class Parser
  def self.parse(code, path)
    top = Prism.parse(code).value
    self.new.walk(top)
  end
  
  def walk(node, ...)
    if node.type == ...
      Thing.new(node)
    ...
end

class Thing
  def initialize(node)
    @node = node
  end

  def path
    # Previously node.source_buffer.name
    ???

I'd have to put the parse results into the instance of Thing which seems cumbersome, or alternatively pass in the path/source buffer as well as the node (was hoping to avoid this).