checklink: first import of Valentin Robert's validator for asm and link

cparser: renamed Errors to Cerrors; removed packing into Cparser.


git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1856 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e

1 files changed, 55 insertions, 0 deletions

diff --git a/cparser/Cerrors.ml b/cparser/Cerrors.ml
new file mode 100644
index 0000000..188531e
--- /dev/null
+++ b/cparser/Cerrors.ml
@@ -0,0 +1,55 @@
+(* *********************************************************************)
+(*                                                                     *)
+(*              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.     *)
+(*                                                                     *)
+(* *********************************************************************)
+
+(* Management of errors and warnings *)
+
+open Format
+
+let warn_error = ref false
+
+let num_errors = ref 0
+let num_warnings = ref 0
+
+let reset () = num_errors := 0; num_warnings := 0
+
+exception Abort
+
+let fatal_error fmt =
+  incr num_errors;
+  kfprintf
+    (fun _ -> raise Abort)
+    err_formatter
+    ("@[<hov 2>" ^^ fmt ^^ ".@]@.@[<hov 0>Fatal error.@]@.")
+
+let error fmt =
+  incr num_errors;
+  eprintf  ("@[<hov 2>" ^^ fmt ^^ ".@]@.")
+
+let warning fmt =
+  incr num_warnings;
+  eprintf  ("@[<hov 2>" ^^ fmt ^^ ".@]@.")
+
+let check_errors () =
+  if !num_errors > 0 then
+    eprintf "@[<hov 0>%d error%s detected.@]@."
+            !num_errors
+            (if !num_errors = 1 then "" else "s");
+  if !warn_error && !num_warnings > 0 then
+    eprintf "@[<hov 0>%d error-enabled warning%s detected.@]@."
+            !num_warnings
+            (if !num_warnings = 1 then "" else "s");
+  !num_errors > 0 || (!warn_error && !num_warnings > 0)
+
+