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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Names
open Decl_kinds
open Term
open Evd
open Environ
open Nametab
open Mod_subst
(** {6 This is the type of class kinds } *)
type cl_typ =
| CL_SORT
| CL_FUN
| CL_SECVAR of variable
| CL_CONST of constant
| CL_IND of inductive
(** Equality over [cl_typ] *)
val cl_typ_eq : cl_typ -> cl_typ -> bool
val subst_cl_typ : substitution -> cl_typ -> cl_typ
(** This is the type of infos for declared classes *)
type cl_info_typ = {
cl_param : int }
(** This is the type of coercion kinds *)
type coe_typ = Globnames.global_reference
(** This is the type of infos for declared coercions *)
type coe_info_typ
(** [cl_index] is the type of class keys *)
type cl_index
(** [coe_index] is the type of coercion keys *)
type coe_index
(** This is the type of paths from a class to another *)
type inheritance_path = coe_index list
(** {6 Access to classes infos } *)
val class_exists : cl_typ -> bool
val class_info : cl_typ -> (cl_index * cl_info_typ)
(** @raise Not_found if this type is not a class *)
val class_info_from_index : cl_index -> cl_typ * cl_info_typ
(** [find_class_type env sigma c] returns the head reference of [c] and its
arguments *)
val find_class_type : evar_map -> types -> cl_typ * constr list
(** raises [Not_found] if not convertible to a class *)
val class_of : env -> evar_map -> types -> types * cl_index
(** raises [Not_found] if not mapped to a class *)
val inductive_class_of : inductive -> cl_index
val class_args_of : env -> evar_map -> types -> constr list
(** {6 [declare_coercion] adds a coercion in the graph of coercion paths } *)
val declare_coercion :
coe_typ -> ?local:bool -> isid:bool ->
src:cl_typ -> target:cl_typ -> params:int -> unit
(** {6 Access to coercions infos } *)
val coercion_exists : coe_typ -> bool
val coercion_value : coe_index -> (unsafe_judgment * bool)
(** {6 Lookup functions for coercion paths } *)
val lookup_path_between_class : cl_index * cl_index -> inheritance_path
(** @raise Not_found when no such path exists *)
val lookup_path_between : env -> evar_map -> types * types ->
types * types * inheritance_path
val lookup_path_to_fun_from : env -> evar_map -> types ->
types * inheritance_path
val lookup_path_to_sort_from : env -> evar_map -> types ->
types * inheritance_path
val lookup_pattern_path_between :
inductive * inductive -> (constructor * int) list
(**/**)
(* Crade *)
open Pp
val install_path_printer :
((cl_index * cl_index) * inheritance_path -> std_ppcmds) -> unit
(**/**)
(** {6 This is for printing purpose } *)
val string_of_class : cl_typ -> string
val pr_class : cl_typ -> std_ppcmds
val pr_cl_index : cl_index -> std_ppcmds
val get_coercion_value : coe_index -> constr
val inheritance_graph : unit -> ((cl_index * cl_index) * inheritance_path) list
val classes : unit -> cl_typ list
val coercions : unit -> coe_index list
(** [hide_coercion] returns the number of params to skip if the coercion must
be hidden, [None] otherwise; it raises [Not_found] if not a coercion *)
val hide_coercion : coe_typ -> int option
|
