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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \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) *)
(************************************************************************)
Require Import Ltac2.Init.
Ltac2 Type t := projection.
(** Type of primitive projections. This includes the unfolding boolean. *)
Ltac2 @ external equal : t -> t -> bool := "coq-core.plugins.ltac2" "projection_equal".
(** Projections obtained through module aliases or Include are not
considered equal by this function. The unfolding boolean is not ignored. *)
Ltac2 @ external ind : t -> inductive := "coq-core.plugins.ltac2" "projection_ind".
(** Get the inductive to which the projectin belongs. *)
Ltac2 @ external index : t -> int := "coq-core.plugins.ltac2" "projection_index".
(** The index of the projection indicates which field it projects. *)
Ltac2 @ external unfolded : t -> bool := "coq-core.plugins.ltac2" "projection_unfolded".
(** Get the unfolding boolean. *)
Ltac2 @ external set_unfolded : t -> bool -> t
:= "coq-core.plugins.ltac2" "projection_set_unfolded".
(** Set the unfolding boolean. *)
Ltac2 @ external of_constant : constant -> t option
:= "coq-core.plugins.ltac2" "projection_of_constant".
(** Get the primitive projection associated to the constant.
The returned projection is folded.
Returns [None] when the constant is not associated to a primitive projection. *)
Ltac2 @ external to_constant : t -> constant option
:= "coq-core.plugins.ltac2" "projection_to_constant".
(** Get the constant associated to the primitive projection.
Currently always returns [Some] but this may change in the future. *)
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