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|
(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, INRIA Paris-Rocquencourt *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU General Public License as published by *)
(* the Free Software Foundation, either version 2 of the License, or *)
(* (at your option) any later version. This file is also distributed *)
(* under the terms of the INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
(* Entry point for the library: parse, elaborate, and transform *)
module CharSet = Set.Make(struct type t = char let compare = compare end)
let transform_program t p =
let run_pass pass flag p = if CharSet.mem flag t then pass p else p in
Rename.program
(run_pass StructReturn.program 's'
(run_pass PackedStructs.program 'p'
(run_pass Bitfields.program 'f'
(run_pass Unblock.program 'b'
p))))
let parse_transformations s =
let t = ref CharSet.empty in
let set s = String.iter (fun c -> t := CharSet.add c !t) s in
String.iter
(function 'b' -> set "b"
| 's' -> set "s"
| 'f' -> set "bf"
| 'p' -> set "bp"
| _ -> ())
s;
!t
let preprocessed_file transfs name sourcefile =
Cerrors.reset();
let ic = open_in sourcefile in
let p =
try
let t = parse_transformations transfs in
let lb = Lexer.init name ic in
let rec inf = Datatypes.S inf in
let ast : Cabs.definition list =
Obj.magic
(match Clflags.time2 "Parsing"
Parser.translation_unit_file inf (Lexer.tokens_stream lb) with
| Parser.Parser.Inter.Fail_pr ->
(* Theoretically impossible : implies inconsistencies
between grammars. *)
Cerrors.fatal_error "Internal error while parsing"
| Parser.Parser.Inter.Timeout_pr -> assert false
| Parser.Parser.Inter.Parsed_pr (ast, _ ) -> ast) in
let p1 = Clflags.time "Elaboration" Elab.elab_file ast in
Clflags.time2 "Emulations" transform_program t p1
with
| Cerrors.Abort ->
[] in
close_in ic;
if Cerrors.check_errors() then None else Some p
|
