diff options
Diffstat (limited to 'kernel/uGraph.mli')
| -rw-r--r-- | kernel/uGraph.mli | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/kernel/uGraph.mli b/kernel/uGraph.mli index 0f078255..752bf762 100644 --- a/kernel/uGraph.mli +++ b/kernel/uGraph.mli @@ -52,17 +52,34 @@ exception AlreadyDeclared val add_universe : Level.t -> bool -> t -> t +(** Add a universe without (Prop,Set) <= u *) +val add_universe_unconstrained : Level.t -> t -> t + +(** Check that the universe levels are declared. Otherwise + @raise UndeclaredLevel l for the first undeclared level found. *) +exception UndeclaredLevel of Univ.Level.t + +val check_declared_universes : t -> Univ.LSet.t -> unit + (** {6 Pretty-printing of universes. } *) val pr_universes : (Level.t -> Pp.t) -> t -> Pp.t (** The empty graph of universes *) val empty_universes : t -[@@ocaml.deprecated "Use UGraph.initial_universes"] val sort_universes : t -> t -val constraints_of_universes : t -> Constraint.t +(** [constraints_of_universes g] returns [csts] and [partition] where + [csts] are the non-Eq constraints and [partition] is the partition + of the universes into equivalence classes. *) +val constraints_of_universes : t -> Constraint.t * LSet.t list + +(** [constraints_for ~kept g] returns the constraints about the + universes [kept] in [g] up to transitivity. + + eg if [g] is [a <= b <= c] then [constraints_for ~kept:{a, c} g] is [a <= c]. *) +val constraints_for : kept:LSet.t -> t -> Constraint.t val check_subtype : AUContext.t check_function (** [check_subtype univ ctx1 ctx2] checks whether [ctx2] is an instance of |