56 lines
1.6 KiB
OCaml
56 lines
1.6 KiB
OCaml
type t =
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(*IF_NOT_AT_LEAST 504 Ocaml_common.Longident.t = *)
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| Lident of string
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| Ldot of t * string
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| Lapply of t * t
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let rec flat accu = function
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| Lident s -> s :: accu
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| Ldot (lid, s) -> flat (s :: accu) lid
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| Lapply (_, _) -> Misc.fatal_error "Longident.flat"
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let flatten lid = flat [] lid
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let rec split_at_dots s pos =
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try
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let dot = String.index_from s pos '.' in
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String.sub s pos (dot - pos) :: split_at_dots s (dot + 1)
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with Not_found -> [ String.sub s pos (String.length s - pos) ]
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let unflatten l =
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match l with
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| [] -> None
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| hd :: tl -> Some (List.fold_left (fun p s -> Ldot (p, s)) (Lident hd) tl)
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let parse s =
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match unflatten (split_at_dots s 0) with
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| None ->
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Lident ""
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(* should not happen, but don't put assert false
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so as not to crash the toplevel (see Genprintval) *)
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| Some v -> v
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let rec to_504_plus lid =
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let loc = Location.none in
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match lid with
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| Lident s -> Longident_504.Lident s
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| Ldot (lid, s) ->
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Longident_504.Ldot ({txt = to_504_plus lid; loc}, { txt = s; loc})
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| Lapply (lid, lid2) ->
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Longident_504.Lapply
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({txt = to_504_plus lid; loc}, {txt= to_504_plus lid2; loc})
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let rec from_504_plus lid =
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match lid with
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| Longident_504.Lident s -> Lident s
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| Longident_504.Ldot (lid, s) -> Ldot (from_504_plus lid.txt, s.txt)
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| Longident_504.Lapply (lid, lid2) ->
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Lapply (from_504_plus lid.txt, from_504_plus lid2.txt)
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let to_compiler lid =
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(*IF_NOT_AT_LEAST 504 lid *)
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(*IF_AT_LEAST 504 to_504_plus lid *)
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let from_compiler lid =
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(*IF_NOT_AT_LEAST 504 lid *)
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(*IF_AT_LEAST 504 from_504_plus lid *)
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