From 9eeb0905d1d6f2c9e7b9be83660335838d2c1295 Mon Sep 17 00:00:00 2001 From: msozeau Date: Thu, 27 Mar 2008 00:57:38 +0000 Subject: Various fixes on typeclasses: - Better interface in constrintern w.r.t. evars used during typechecking - Add "unsatisfiable_constraints" exception which gives back the raw evar_map that was not satisfied during typeclass search (presentation could be improved). - Correctly infer the minimal sort for typeclasses declared as definitions (everything was in type before). - Really handle priorities in typeclass eauto: goals produced with higher priority (lowest number) instances are tried before other of lower priority goals, regardless of the number of subgoals. - Change inverse to a notation for flip, now that universe polymorphic definitions are handled correctly. - Add EquivalenceDec class similar to SetoidDec, declaring decision procedures for equivalences. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10724 85f007b7-540e-0410-9357-904b9bb8a0f7 --- pretyping/typeclasses_errors.mli | 3 +++ 1 file changed, 3 insertions(+) (limited to 'pretyping/typeclasses_errors.mli') diff --git a/pretyping/typeclasses_errors.mli b/pretyping/typeclasses_errors.mli index 82e37f41d8..a697087d25 100644 --- a/pretyping/typeclasses_errors.mli +++ b/pretyping/typeclasses_errors.mli @@ -28,6 +28,7 @@ type typeclass_error = | NotAClass of constr | UnboundMethod of global_reference * identifier located (* Class name, method *) | NoInstance of identifier located * constr list + | UnsatisfiableConstraints of evar_map | MismatchedContextInstance of contexts * constr_expr list * named_context (* found, expected *) exception TypeClassError of env * typeclass_error @@ -38,4 +39,6 @@ val unbound_method : env -> global_reference -> identifier located -> 'a val no_instance : env -> identifier located -> constr list -> 'a +val unsatisfiable_constraints : env -> evar_map -> 'a + val mismatched_ctx_inst : env -> contexts -> constr_expr list -> named_context -> 'a -- cgit v1.2.3