Switching to the new C parser/elaborator/simplifier

git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1269 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 59 insertions, 0 deletions

diff --git a/cparser/Parse.ml b/cparser/Parse.ml
new file mode 100644
index 00000000..7dcc8d1d
--- /dev/null
+++ b/cparser/Parse.ml
@@ -0,0 +1,59 @@
+(* *********************************************************************)
+(*                                                                     *)
+(*              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 (AddCasts.program ~all:(CharSet.mem 'C' t)) 'c'
+  (run_pass StructAssign.program 'S'
+  (run_pass StructByValue.program 's'
+  (run_pass Bitfields.program 'f'
+  (run_pass (SimplExpr.program ~volatile:(CharSet.mem 'v' t)) 'e'
+  (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"
+            | 'e' -> set "e"
+            | 'c' -> set "ec"
+            | 'C' -> set "ecC"
+            | 's' -> set "s"
+            | 'S' -> set "esS"
+            | 'v' -> set "ev"
+            | 'f' -> set "bef"
+            |  _  -> ())
+    s;
+  !t
+
+let preprocessed_file transfs name sourcefile =
+  Errors.reset();
+  let t = parse_transformations transfs in
+  let ic = open_in sourcefile in
+  let p =
+    try
+      Rename.program (transform_program t (Elab.elab_preprocessed_file name ic))
+    with Parsing.Parse_error ->
+           Errors.error "Error during parsing"; []
+       | Errors.Abort ->
+           [] in
+  close_in ic;
+  if Errors.check_errors() then None else Some p