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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 Lesser General Public License as *)
(* published by the Free Software Foundation, either version 2.1 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 begin
let p = pass p in
Diagnostics.check_errors ();
p
end else
p
in
p
|> run_pass Unblock.program 'b'
|> run_pass PackedStructs.program 'p'
|> run_pass StructPassing.program 's'
|> Rename.program
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"
| '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 parse_string name text =
let log_fuel = Camlcoq.Nat.of_int 50 in
match
Parser.translation_unit_file log_fuel (Lexer.tokens_stream name text)
with
| Parser.MenhirLibParser.Inter.Parsed_pr (ast, _ ) ->
(ast: Cabs.definition list)
| _ -> (* Fail_pr or Fail_pr_full or Timeout_pr, depending
on the version of Menhir.
Fail_pr{,_full} means that there's an inconsistency
between the pre-parser and the parser.
Timeout_pr means that we ran for 2^50 steps. *)
Diagnostics.fatal_error Diagnostics.no_loc "internal error while parsing"
let preprocessed_file transfs name sourcefile =
Diagnostics.reset();
let check_errors x =
Diagnostics.check_errors(); x in
(* 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. *)
read_file sourcefile
|> Timing.time2 "Parsing" parse_string name
|> Timing.time "Elaboration" Elab.elab_file
|> check_errors
|> Timing.time2 "Emulations" transform_program (parse_transformations transfs)
|> check_errors
|
