From 2e30531e78519a5b9c3773c2524e4fd4759cc5c8 Mon Sep 17 00:00:00 2001 From: Gaëtan Gilbert Date: Thu, 1 Mar 2018 18:28:36 +0100 Subject: Delayed weak constraints for cumulative inductive types. When comparing 2 irrelevant universes [u] and [v] we add a "weak constraint" [UWeak(u,v)] to the UState. Then at minimization time a weak constraint between unrelated universes where one is flexible causes them to be unified. --- engine/uState.mli | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'engine/uState.mli') diff --git a/engine/uState.mli b/engine/uState.mli index 9a2bc706b..48c38fafc 100644 --- a/engine/uState.mli +++ b/engine/uState.mli @@ -72,6 +72,8 @@ val ind_univ_entry : poly:bool -> t -> Entries.inductive_universes (** {5 Constraints handling} *) +val drop_weak_constraints : bool ref + val add_constraints : t -> Univ.Constraint.t -> t (** @raise UniversesDiffer when universes differ @@ -164,3 +166,5 @@ val update_sigma_env : t -> Environ.env -> t val pr_uctx_level : t -> Univ.Level.t -> Pp.t val reference_of_level : t -> Univ.Level.t -> Libnames.reference + +val pr_weak : (Univ.Level.t -> Pp.t) -> t -> Pp.t -- cgit v1.2.3