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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 name =
let run_pass pass flag p =
if CharSet.mem flag t then begin
let p = pass p in
Diagnostics.check_errors ();
p
end else
p
in
let p1 = (run_pass StructPassing.program 's'
(run_pass PackedStructs.program 'p'
(run_pass Unblock.program 'b'
(run_pass Bitfields.program 'f'
p)))) in
Rename.program p1
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 read_file sourcefile =
let ic = open_in_bin sourcefile in
let n = in_channel_length ic in
let text = really_input_string ic n in
close_in ic;
text
let preprocessed_file transfs name sourcefile =
Diagnostics.reset();
(* Reading the whole file at once may seem costly, but seems to be
the simplest / most robust way of accessing the text underlying
a range of positions. This is used when printing an error message.
Plus, I note that reading the whole file into memory leads to a
speed increase: "make -C test" speeds up by 3 seconds out of 40
on my machine. *)
let text = read_file sourcefile in
let p =
let t = parse_transformations transfs in
let log_fuel = Camlcoq.Nat.of_int 50 in
let ast : Cabs.definition list =
(match Timing.time "Parsing"
(* The call to Lexer.tokens_stream results in the pre
parsing of the entire file. This is non-negligeabe,
so we cannot use Timing.time2 *)
(fun () ->
Parser.translation_unit_file log_fuel (Lexer.tokens_stream name text)) ()
with
| Parser.MenhirLibParser.Inter.Fail_pr ->
(* Theoretically impossible : implies inconsistencies
between grammars. *)
Diagnostics.fatal_error Diagnostics.no_loc "internal error while parsing"
| Parser.MenhirLibParser.Inter.Timeout_pr -> assert false
| Parser.MenhirLibParser.Inter.Parsed_pr (ast, _ ) -> ast) in
let p1 = Timing.time "Elaboration" Elab.elab_file ast in
Diagnostics.check_errors ();
Timing.time2 "Emulations" transform_program t p1 name in
Diagnostics.check_errors();
p
|
