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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
open Names
(** {5 Patterns} *)
(** Cases pattern variables *)
type patvar = Id.t
type case_info_pattern =
{ cip_style : Constr.case_style;
cip_ind : inductive option;
cip_ind_tags : bool list option; (** indicates LetIn/Lambda in arity *)
cip_extensible : bool (** does this match end with _ => _ ? *) }
type constr_pattern =
| PRef of GlobRef.t
| PVar of Id.t
| PEvar of Evar.t * constr_pattern array
| PRel of int
| PApp of constr_pattern * constr_pattern array
| PSoApp of patvar * constr_pattern list
| PProj of Projection.t * constr_pattern
| PLambda of Name.t * constr_pattern * constr_pattern
| PProd of Name.t * constr_pattern * constr_pattern
| PLetIn of Name.t * constr_pattern * constr_pattern option * constr_pattern
| PSort of Sorts.family
| PMeta of patvar option
| PIf of constr_pattern * constr_pattern * constr_pattern
| PCase of case_info_pattern * constr_pattern * constr_pattern *
(int * bool list * constr_pattern) list (** index of constructor, nb of args *)
| PFix of (int array * int) * (Name.t array * constr_pattern array * constr_pattern array)
| PCoFix of int * (Name.t array * constr_pattern array * constr_pattern array)
| PInt of Uint63.t
(** Nota : in a [PCase], the array of branches might be shorter than
expected, denoting the use of a final "_ => _" branch *)
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