From edcf0d8b8bff399443ddf4cd436185c33bf59829 Mon Sep 17 00:00:00 2001
From: aspiwack
Date: Fri, 13 May 2011 17:57:41 +0000
Subject: A new mechanism to handle errors. Instead of the monolitic Cerrors, I
 introduce a lightweight Errors module whose error message can be expanded by
 module introducing exceptions.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14119 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 lib/errors.mli | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 lib/errors.mli

(limited to 'lib/errors.mli')

diff --git a/lib/errors.mli b/lib/errors.mli
new file mode 100644
index 0000000000..120634e60d
--- /dev/null
+++ b/lib/errors.mli
@@ -0,0 +1,27 @@
+(***********************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team    *)
+(* <O___,, *        INRIA-Rocquencourt  &  LRI-CNRS-Orsay              *)
+(*   \VV/  *************************************************************)
+(*    //   *      This file is distributed under the terms of the      *)
+(*         *       GNU Lesser General Public License Version 2.1       *)
+(***********************************************************************)
+
+(** This modules implements basic manipulations of errors for use
+    throughout Coq's code. *)
+
+(** [register_handler h] registers [h] as a handler.
+    When an expression is printed with [print e], it
+    goes through all registered handles (the most
+    recent first) until a handle deals with it.
+
+    Handles signal that they don't deal with some exception
+    by raisine [Unhandled].
+
+    Handles can raise exceptions themselves, in which
+    case, the exception is passed to the handles which
+    were registered before. *)
+exception Unhandled
+
+val register_handler : (exn -> Pp.std_ppcmds) -> unit
+
+val print : exn -> Pp.std_ppcmds
-- 
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