diff options
Diffstat (limited to 'engine')
| -rw-r--r-- | engine/evd.ml | 7 | ||||
| -rw-r--r-- | engine/evd.mli | 15 | ||||
| -rw-r--r-- | engine/proofview.ml | 4 | ||||
| -rw-r--r-- | engine/proofview.mli | 1 | ||||
| -rw-r--r-- | engine/termops.ml | 2 |
5 files changed, 21 insertions, 8 deletions
diff --git a/engine/evd.ml b/engine/evd.ml index d8a658e3e3..bffb407274 100644 --- a/engine/evd.ml +++ b/engine/evd.ml @@ -854,6 +854,13 @@ let is_eq_sort s1 s2 = if Univ.Universe.equal u1 u2 then None else Some (u1, u2) +(* Precondition: l is not defined in the substitution *) +let universe_rigidity evd l = + let uctx = evd.universes in + if Univ.LSet.mem l (Univ.ContextSet.levels (UState.context_set uctx)) then + UnivFlexible (Univ.LSet.mem l (UState.algebraics uctx)) + else UnivRigid + let normalize_universe evd = let vars = ref (UState.subst evd.universes) in let normalize = Universes.normalize_universe_opt_subst vars in diff --git a/engine/evd.mli b/engine/evd.mli index 5c9effd4be..993ed300bc 100644 --- a/engine/evd.mli +++ b/engine/evd.mli @@ -467,7 +467,17 @@ val retract_coercible_metas : evar_map -> metabinding list * evar_map (********************************************************* Sort/universe variables *) -(** Rigid or flexible universe variables *) +(** Rigid or flexible universe variables. + + [UnivRigid] variables are user-provided or come from an explicit + [Type] in the source, we do not minimize them or unify them eagerly. + + [UnivFlexible alg] variables are fresh universe variables of + polymorphic constants or generated during refinement, sometimes in + algebraic position (i.e. not appearing in the term at the moment of + creation). They are the candidates for minimization (if alg, to an + algebraic universe) and unified eagerly in the first-order + unification heurstic. *) type rigid = UState.rigid = | UnivRigid @@ -514,7 +524,8 @@ val new_univ_variable : ?loc:Loc.t -> ?name:string -> rigid -> evar_map -> evar_ val new_sort_variable : ?loc:Loc.t -> ?name:string -> rigid -> evar_map -> evar_map * sorts val add_global_univ : evar_map -> Univ.Level.t -> evar_map - + +val universe_rigidity : evar_map -> Univ.Level.t -> rigid val make_flexible_variable : evar_map -> bool -> Univ.universe_level -> evar_map val is_sort_variable : evar_map -> sorts -> Univ.universe_level option (** [is_sort_variable evm s] returns [Some u] or [None] if [s] is diff --git a/engine/proofview.ml b/engine/proofview.ml index 660f737c69..2fbabb7492 100644 --- a/engine/proofview.ml +++ b/engine/proofview.ml @@ -1159,10 +1159,6 @@ let tclLIFT = Proof.lift let tclCHECKINTERRUPT = tclLIFT (NonLogical.make Control.check_for_interrupt) - - - - (*** Compatibility layer with <= 8.2 tactics ***) module V82 = struct type tac = Evar.t Evd.sigma -> Evar.t list Evd.sigma diff --git a/engine/proofview.mli b/engine/proofview.mli index 725445251d..90be2f90ab 100644 --- a/engine/proofview.mli +++ b/engine/proofview.mli @@ -373,7 +373,6 @@ val mark_as_unsafe : unit tactic with given up goals cannot be closed. *) val give_up : unit tactic - (** {7 Control primitives} *) (** [tclPROGRESS t] checks the state of the proof after [t]. It it is diff --git a/engine/termops.ml b/engine/termops.ml index 35917b368f..2f4c5e2049 100644 --- a/engine/termops.ml +++ b/engine/termops.ml @@ -1000,7 +1000,7 @@ let smash_rel_context sign = let fold_named_context_both_sides f l ~init = List.fold_right_and_left f l init let mem_named_context_val id ctxt = - try Environ.lookup_named_val id ctxt; true with Not_found -> false + try ignore(Environ.lookup_named_val id ctxt); true with Not_found -> false let compact_named_context sign = let compact l decl = |