class SyntaxTree::FlowControlFormatter

def skip_parens?(node)
  case node
  when FloatLiteral, Imaginary, Int, RationalLiteral
    true
  when VarRef
    case node.value
    when Const, CVar, GVar, IVar, Kw
      true
    else
      false
    end
  else
    false
  end
end