From 54788df72ce79998ee27db362401a56bda4daceb Mon Sep 17 00:00:00 2001
From: Emilio Jesus Gallego Arias
Date: Sun, 15 Mar 2020 17:52:16 -0400
Subject: [obligations] Functionalize Program state

In our quest to unify all the declaration paths, an important step
is to account for the state pertaining to `Program` declarations.

Whereas regular proofs keep are kept in a stack-like structure;
obligations for constants defined by `Program` are stored in a global
map which is manipulated by almost regular open/close proof primitives.

We make this manipulation explicit by handling the program state
functionally, in a similar way than we already do for lemmas.

This requires to extend the proof DSL a bit; but IMO changes are
acceptable given the gain.

Most of the PR is routine; only remarkable change is that the hook is
called explicitly in `finish_admitted` as it had to learn about the
different types of proof_endings.

Note that we could have gone deeper and use the type system to refine
the core proof type; IMO it is still too preliminary so it is better
to do this step as an intermediate one towards a deeper unification.
---
 vernac/classes.mli | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'vernac/classes.mli')

diff --git a/vernac/classes.mli b/vernac/classes.mli
index 07695b5bef..e1816fb138 100644
--- a/vernac/classes.mli
+++ b/vernac/classes.mli
@@ -52,6 +52,7 @@ val new_instance
 
 val new_instance_program
   : ?global:bool (** Not global by default. *)
+  -> pm:Declare.OblState.t
   -> poly:bool
   -> name_decl
   -> local_binder_expr list
@@ -60,7 +61,7 @@ val new_instance_program
   -> ?generalize:bool
   -> ?hook:(GlobRef.t -> unit)
   -> Vernacexpr.hint_info_expr
-  -> Id.t
+  -> Declare.OblState.t * Id.t
 
 val declare_new_instance
   : ?global:bool (** Not global by default. *)
-- 
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