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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: classes.ml 6748 2005-02-18 22:17:50Z herbelin $ i*)
(*i*)
open Names
open Decl_kinds
open Term
open Sign
open Evd
open Environ
open Nametab
open Mod_subst
open Topconstr
open Util
(*i*)
type contexts = Parameters | Properties
type typeclass_error =
| UnboundClass of identifier located
| UnboundMethod of identifier * identifier located (* Class name, method *)
| NoInstance of identifier located * constr list
| MismatchedContextInstance of contexts * constr_expr list * named_context (* found, expected *)
exception TypeClassError of env * typeclass_error
let typeclass_error env err = raise (TypeClassError (env, err))
let unbound_class env id = typeclass_error env (UnboundClass id)
let unbound_method env cid id = typeclass_error env (UnboundMethod (cid, id))
let no_instance env id args = typeclass_error env (NoInstance (id, args))
let mismatched_ctx_inst env c n m = typeclass_error env (MismatchedContextInstance (c, n, m))
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