module Solargraph::NodeMethods

def drill_signature node, signature
  return signature unless node.kind_of?(AST::Node)
  if node.type == :const or node.type == :cbase
    unless node.children[0].nil?
      signature += drill_signature(node.children[0], signature)
    end
    signature += '::' unless signature.empty?
    signature += node.children[1].to_s
  elsif node.type == :lvar or node.type == :ivar or node.type == :cvar
    signature += '.' unless signature.empty?
    signature += node.children[0].to_s
  elsif node.type == :send
    unless node.children[0].nil?
      signature += drill_signature(node.children[0], signature)
    end
    signature += '.' unless signature.empty?
    signature += node.children[1].to_s
  end
  signature
end