Revert "CLEANUP: removing the definition of the "Context.Rel.Declaration.to_tuple" function"

This reverts commit 4b24bb7d3b770592015c264001b9aed9fe95c200.

While the of_tuple function is clearly dubious and mostly used for compatiblity reasons,
and thus had to be removed, I think that the to_tuple function is still useful as it
allows to access each component of the declaration piecewise. Without it, some codes
tend to get cluttered with useless projections here and there.

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/context.mli b/kernel/context.mli
index 27d0f2c1b..b8a7bf6a3 100644
--- a/kernel/context.mli
+++ b/kernel/context.mli
@@ -80,6 +80,8 @@ sig
 
     (** Reduce all terms in a given declaration to a single value. *)
     val fold : (Constr.t -> 'a -> 'a) -> t -> 'a -> 'a
+
+    val to_tuple : t -> Name.t * Constr.t option * Constr.t
   end
 
   (** Rel-context is represented as a list of declarations.