From 22cc653ceff98ea69d0975ee0ccdcecc4ba96058 Mon Sep 17 00:00:00 2001 From: msozeau Date: Fri, 28 Mar 2008 20:40:35 +0000 Subject: Improve error handling and messages for typeclasses. Add definitions of relational algebra in Classes/RelationClasses including equivalence, inclusion, conjunction and disjunction. Add PartialOrder class and show that we have a partial order on relations. Change SubRelation to subrelation for consistency with the standard library. The caracterization of PartialOrder is a bit original: we require an equivalence and a preorder so that the equivalence relation is equivalent to the conjunction of the order relation and its inverse. We can derive antisymmetry and appropriate morphism instances from this. Also add a fully general heterogeneous definition of respectful from which we can build the non-dependent respectful combinator. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10728 85f007b7-540e-0410-9357-904b9bb8a0f7 --- pretyping/typeclasses_errors.mli | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'pretyping/typeclasses_errors.mli') diff --git a/pretyping/typeclasses_errors.mli b/pretyping/typeclasses_errors.mli index a697087d2..f97aed96a 100644 --- a/pretyping/typeclasses_errors.mli +++ b/pretyping/typeclasses_errors.mli @@ -28,7 +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 + | UnsatisfiableConstraints of evar_defs | MismatchedContextInstance of contexts * constr_expr list * named_context (* found, expected *) exception TypeClassError of env * typeclass_error @@ -39,6 +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 unsatisfiable_constraints : env -> evar_defs -> 'a val mismatched_ctx_inst : env -> contexts -> constr_expr list -> named_context -> 'a -- cgit v1.2.3