class SyntaxTree::Index::ParserBackend::ConstantNameVisitor

def visit_const_path_ref(node)
  visit(node.parent) << node.constant.value.to_sym
end

def visit_const_ref(node)
  [node.constant.value.to_sym]
end

def visit_var_ref(node)
  [node.value.value.to_sym]
end