From 80aba8d52c650ef8e4ada694c20bf12c15849694 Mon Sep 17 00:00:00 2001
From: gareuselesinge
Date: Thu, 8 Aug 2013 18:52:47 +0000
Subject: enhance marshallable option for freeze (minor TODO in safe_typing)

It can be:
`Yes      Full data, in a state that can be marshalled
`No       Full data, good for Undo only
`Shallow  Partial data, marshallable, good for slave processes

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16682 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 proofs/proof_global.ml  | 9 ++++++++-
 proofs/proof_global.mli | 2 +-
 2 files changed, 9 insertions(+), 2 deletions(-)

(limited to 'proofs')

diff --git a/proofs/proof_global.ml b/proofs/proof_global.ml
index 0c0aac715a..470d19b718 100644
--- a/proofs/proof_global.ml
+++ b/proofs/proof_global.ml
@@ -391,6 +391,13 @@ module V82 = struct
 end
 
 type state = pstate list
-let freeze () = !pstates
+let drop_hook_mode p = { p with hook = None; mode = None }
+        
+let freeze ~marshallable =
+  match marshallable with
+  | `Yes ->
+      Errors.anomaly (Pp.str"full marshalling of proof state not supported")
+  | `Shallow -> List.map drop_hook_mode !pstates
+  | `No -> !pstates
 let unfreeze s = pstates := s; update_proof_mode ()
 
diff --git a/proofs/proof_global.mli b/proofs/proof_global.mli
index a5fe33992f..61bb5c0dd8 100644
--- a/proofs/proof_global.mli
+++ b/proofs/proof_global.mli
@@ -140,5 +140,5 @@ module V82 : sig
 end
 
 type state
-val freeze : unit -> state
+val freeze : marshallable:[`Yes | `No | `Shallow] -> state
 val unfreeze : state -> unit
-- 
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