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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: typeclasses.mli 11161 2008-06-21 14:32:47Z msozeau $ i*)
(*i*)
open Names
open Libnames
open Decl_kinds
open Term
open Sign
open Evd
open Environ
open Nametab
open Mod_subst
open Topconstr
open Util
(*i*)
(* This module defines type-classes *)
type typeclass = {
(* The class implementation: a record parameterized by the context with defs in it or a definition if
the class is a singleton. This acts as the classe's global identifier. *)
cl_impl : global_reference;
(* Context in which the definitions are typed. Includes both typeclass parameters and superclasses.
The boolean indicates if the typeclass argument is a direct superclass. *)
cl_context : ((global_reference * bool) option * named_declaration) list;
cl_params : int; (* This is the length of the suffix of the context which should be considered explicit parameters. *)
(* Context of definitions and properties on defs, will not be shared *)
cl_props : named_context;
(* The methods implementations of the typeclass as projections. *)
cl_projs : (identifier * constant) list;
}
type instance
val instance_impl : instance -> constant
val new_instance : typeclass -> int option -> bool -> constant -> instance
val instances : global_reference -> instance list
val typeclasses : unit -> typeclass list
val add_class : typeclass -> unit
val add_instance : instance -> unit
val register_add_instance_hint : (constant -> int option -> unit) -> unit
val add_instance_hint : constant -> int option -> unit
val class_info : global_reference -> typeclass (* raises a UserError if not a class *)
val is_class : global_reference -> bool
val class_of_constr : constr -> typeclass option
val dest_class_app : constr -> typeclass * constr array (* raises a UserError if not a class *)
val is_instance : global_reference -> bool
val is_method : constant -> bool
(* Returns the term and type for the given instance of the parameters and fields
of the type class. *)
val instance_constructor : typeclass -> constr list -> constr * types
val resolve_one_typeclass : env -> types -> types (* Raises Not_found *)
val resolve_one_typeclass_evd : env -> evar_defs ref -> types -> types (* Raises Not_found *)
val resolve_typeclass : env -> evar -> evar_info -> evar_defs * bool -> evar_defs * bool
(* Use evar_extra for marking resolvable evars. *)
val bool_in : bool -> Dyn.t
val bool_out : Dyn.t -> bool
val is_resolvable : evar_info -> bool
val mark_unresolvable : evar_info -> evar_info
val mark_unresolvables : evar_map -> evar_map
val resolve_typeclasses : ?onlyargs:bool -> ?split:bool -> ?fail:bool -> env -> evar_defs -> evar_defs
val solve_instanciation_problem : (env -> evar_defs -> existential_key -> evar_info -> evar_defs * bool) ref
val solve_instanciations_problem : (env -> evar_defs -> bool -> bool -> bool -> evar_defs) ref
type substitution = (identifier * constr) list
val substitution_of_named_context :
evar_defs ref -> env -> identifier -> int ->
substitution -> named_context -> substitution
val nf_substitution : evar_map -> substitution -> substitution
val is_implicit_arg : hole_kind -> bool
(* debug *)
(* val subst : *)
(* 'a * Mod_subst.substitution * *)
(* ((Libnames.global_reference, typeclass) Gmap.t * 'b * *)
(* ('c, instance list) Gmap.t) -> *)
(* (Libnames.global_reference, typeclass) Gmap.t * 'b * *)
(* ('c, instance list) Gmap.t *)
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