From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Fri, 15 Jul 2011 14:40:34 +0000 (+0000)
Subject: New function replace to be used in place of time_travel every time the user
X-Git-Tag: make_still_working~2368
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=2c977fe8fdfb6930ed73c6ef806ed35423f4ab6c;p=helm.git

New function replace to be used in place of time_travel every time the user
switches to a new tab. In this way, every tab is independent and it only sees
the objects defined in that tab. This fixes the following bug: in tab A go
down; go down in tab B; go up in tab A (at this point also the objects declared
in B where removed); do something in B or go up in B (BOOM))
---

diff --git a/matita/components/ng_library/nCicLibrary.ml b/matita/components/ng_library/nCicLibrary.ml
index 27fb0baf6..826779401 100644
--- a/matita/components/ng_library/nCicLibrary.ml
+++ b/matita/components/ng_library/nCicLibrary.ml
@@ -162,6 +162,11 @@ let time_travel0 (sto,ali) =
 
 let time_travel status = time_travel0 status#timestamp;;
 
+let replace status =
+ let sto,ali = status#timestamp in
+  storage := sto; local_aliases := ali
+;;
+
 type obj = string * Obj.t
 (* includes are transitively closed; dependencies are only immediate *)
 type dump =
diff --git a/matita/components/ng_library/nCicLibrary.mli b/matita/components/ng_library/nCicLibrary.mli
index 63589694a..ee1ed3ece 100644
--- a/matita/components/ng_library/nCicLibrary.mli
+++ b/matita/components/ng_library/nCicLibrary.mli
@@ -35,6 +35,7 @@ val get_obj: #NCic.status -> NUri.uri -> NCic.obj (* changes the current timesta
 *)
 
 val time_travel: #status -> unit
+val replace: #status -> unit
 
 val init: unit -> unit