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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 $Id$ i*)
(*i*)
open Names
open Nametab
open Term
open Libnames
open Classops
open Libobject
open Library
(*i*)
(*s A structure S is a non recursive inductive type with a single
constructor (the name of which defaults to Build_S) *)
type struc_typ = {
s_CONST : identifier;
s_PARAM : int;
s_PROJKIND : bool list;
s_PROJ : constant option list }
val declare_structure :
inductive * identifier * int * bool list * constant option list -> unit
(* [lookup_structure isp] returns the infos associated to inductive path
[isp] if it corresponds to a structure, otherwise fails with [Not_found] *)
val lookup_structure : inductive -> struc_typ
(* raise [Not_found] if not a projection *)
val find_projection_nparams : global_reference -> int
(*s A canonical structure declares "canonical" conversion hints between *)
(* the effective components of a structure and the projections of the *)
(* structure *)
type obj_typ = {
o_DEF : constr;
o_TABS : constr list; (* ordered *)
o_TPARAMS : constr list; (* ordered *)
o_TCOMPS : constr list } (* ordered *)
val lookup_canonical_conversion : (global_reference * global_reference) -> obj_typ
val declare_canonical_structure : global_reference -> unit
val canonical_projections : unit ->
((global_reference * global_reference) * obj_typ) list
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