type t =
| Atom of Src_pos.Absolute.t * string * string option
| List of Src_pos.Absolute.t * t_or_comment list * Src_pos.Absolute.t
S-expressions annotated with relative source positions and comments
and t_or_comment =
| Sexp of t
| Comment of comment
and comment =
| Plain_comment of Src_pos.Absolute.t * string
| Sexp_comment of Src_pos.Absolute.t * comment list * t