119 lines
3.8 KiB
OCaml
119 lines
3.8 KiB
OCaml
(**************************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Fabrice Le Fessant, INRIA Saclay *)
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(* *)
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(* Copyright 2012 Institut National de Recherche en Informatique et *)
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(* en Automatique. *)
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(* *)
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(* All rights reserved. This file is distributed under the terms of *)
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(* the GNU Lesser General Public License version 2.1, with the *)
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(* special exception on linking described in the file LICENSE. *)
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(* *)
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(**************************************************************************)
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open Misc
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type pers_flags =
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| Rectypes
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| Alerts of alerts
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| Opaque
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| Unsafe_string
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type error =
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| Not_an_interface of filepath
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| Wrong_version_interface of filepath * string
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| Corrupted_interface of filepath
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exception Error of error
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(* these type abbreviations are not exported;
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they are used to provide consistency across
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input_value and output_value usage. *)
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type signature = Types.signature_item list
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type flags = pers_flags list
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type header = modname * signature
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type cmi_infos = {
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cmi_name : modname;
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cmi_sign : signature;
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cmi_crcs : crcs;
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cmi_flags : flags;
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}
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let input_cmi ic =
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let (name, sign) = (input_value ic : header) in
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let crcs = (input_value ic : crcs) in
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let flags = (input_value ic : flags) in
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{
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cmi_name = name;
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cmi_sign = sign;
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cmi_crcs = crcs;
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cmi_flags = flags;
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}
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let read_cmi filename =
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let ic = open_in_bin filename in
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try
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let buffer =
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really_input_string ic (String.length Config.cmi_magic_number)
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in
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if buffer <> Config.cmi_magic_number then begin
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close_in ic;
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let pre_len = String.length Config.cmi_magic_number - 3 in
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if String.sub buffer 0 pre_len
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= String.sub Config.cmi_magic_number 0 pre_len then
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begin
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let msg =
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if buffer < Config.cmi_magic_number then "an older" else "a newer" in
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raise (Error (Wrong_version_interface (filename, msg)))
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end else begin
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raise(Error(Not_an_interface filename))
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end
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end;
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let cmi = input_cmi ic in
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close_in ic;
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cmi
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with End_of_file | Failure _ ->
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close_in ic;
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raise(Error(Corrupted_interface(filename)))
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| Error e ->
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close_in ic;
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raise (Error e)
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let output_cmi filename oc cmi =
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(* beware: the provided signature must have been substituted for saving *)
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output_string oc Config.cmi_magic_number;
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output_value oc ((cmi.cmi_name, cmi.cmi_sign) : header);
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flush oc;
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let crc = Digest.file filename in
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let crcs = (cmi.cmi_name, Some crc) :: cmi.cmi_crcs in
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output_value oc (crcs : crcs);
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output_value oc (cmi.cmi_flags : flags);
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crc
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(* Error report *)
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open Format
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let report_error ppf = function
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| Not_an_interface filename ->
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fprintf ppf "%a@ is not a compiled interface"
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Location.print_filename filename
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| Wrong_version_interface (filename, older_newer) ->
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fprintf ppf
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"%a@ is not a compiled interface for this version of OCaml.@.\
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It seems to be for %s version of OCaml."
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Location.print_filename filename older_newer
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| Corrupted_interface filename ->
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fprintf ppf "Corrupted compiled interface@ %a"
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Location.print_filename filename
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let () =
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Location.register_error_of_exn
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(function
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| Error err -> Some (Location.error_of_printer_file report_error err)
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| _ -> None
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)
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