70 lines
1.5 KiB
OCaml
70 lines
1.5 KiB
OCaml
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open Import
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open Sexp.Of_sexp
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type t =
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{ name : string
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}
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let filename = "dune-project"
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type lang =
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| Dune_0_1
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let lang =
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let version ver =
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match string ver with
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| "0.1" -> Dune_0_1
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| _ ->
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of_sexp_error ver "unsupported version of the dune language"
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in
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let name =
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enum
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[ ("dune", ()) ]
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in
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sum
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[ cstr "lang" (name @> version @> nil) (fun () v -> v) ]
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module Acc = struct
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type t =
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{ name : string option
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}
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let init =
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{ name = None }
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end
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let load ~dir =
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let fname = Path.relative dir filename in
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let sexps = Io.Sexp.load fname ~mode:Many in
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let langs, sexps =
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List.partition_map sexps ~f:(function
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| List (loc, Atom (_, A "lang") :: _) as sexp ->
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Left (lang sexp, loc)
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| sexp -> Right sexp)
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in
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let _lang =
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match langs with
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| [] ->
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Loc.fail (Loc.in_file (Path.to_string fname))
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"language not specified, you need to add (lang dune 0.1)"
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| [(v, _)] -> v
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| _ :: (_, loc) :: _ ->
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Loc.fail loc "language specified too many times"
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in
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let acc =
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List.fold_left sexps ~init:Acc.init ~f:(fun (acc : Acc.t) sexp ->
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sum
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[ cstr "lang" nil acc
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; cstr_loc "name" (string @> nil) (fun loc name ->
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match acc.name with
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| None -> { Acc.name = Some name }
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| Some _ -> Loc.fail loc "name specified too many times")
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]
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sexp)
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in
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{ name =
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match acc.name with
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| Some s -> s
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| None -> "_" ^ String.concat ~sep:"_" (Path.explode_exn dir)
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}
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