ocaml/ocamlbuild/flags.ml

80 lines
2.5 KiB
OCaml

(***********************************************************************)
(* *)
(* ocamlbuild *)
(* *)
(* Nicolas Pouillard, Berke Durak, projet Gallium, INRIA Rocquencourt *)
(* *)
(* Copyright 2007 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Library General Public License, with *)
(* the special exception on linking described in file ../LICENSE. *)
(* *)
(***********************************************************************)
(* Original author: Nicolas Pouillard *)
open Command
open Bool (* FIXME remove me *)
open Tags.Operators
type decl = {
tags: Tags.t;
flags: Command.spec;
deprecated: bool;
}
let flags_of_decl { flags; _ } = flags
let tags_of_decl { tags; _ } = tags
let all_decls = ref []
let of_tags matched_tags =
S begin
List.fold_left begin fun acc { tags; flags; _ } ->
if Tags.does_match matched_tags tags then flags :: acc
else acc
end [] !all_decls
end
let () = Command.tag_handler := of_tags
let of_tag_list x = of_tags (Tags.of_list x)
let add_decl decl =
all_decls := decl :: !all_decls
let flag ?(deprecated=false) tags flags =
let tags = Tags.of_list tags in
add_decl { tags; flags; deprecated }
let pflag tags ptag flags =
Param_tags.declare ptag
(fun param -> flag (Param_tags.make ptag param :: tags) (flags param))
let add x xs = x :: xs
let remove me = List.filter (fun x -> me <> x)
let pretty_print { tags; flags; deprecated } =
let sflag = Command.string_of_command_spec flags in
let header = if deprecated then "deprecated flag" else "flag" in
let pp fmt = Log.raw_dprintf (-1) fmt in
pp "@[<2>%s@ {. %a .}@ %S@]@\n@\n" header Tags.print tags sflag
let show_documentation () =
List.iter
(fun decl -> if not decl.deprecated then pretty_print decl)
!all_decls;
List.iter
(fun decl -> if decl.deprecated then pretty_print decl)
!all_decls;
let pp fmt = Log.raw_dprintf (-1) fmt in
pp "@."
let used_tags = ref Tags.empty
let mark_tag_used tag =
used_tags := Tags.add tag !used_tags
let get_used_tags () =
List.fold_left (fun acc decl -> Tags.union acc decl.tags)
!used_tags !all_decls