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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(** Legacy proof engine. Do not use in newly written code. *)
open Evd
open Names
open Term
(** This module defines the structure of proof tree and the tactic type. So, it
is used by [Proof_tree] and [Refiner] *)
type prim_rule =
| Cut of bool * bool * Id.t * types
| Refine of constr
(** Nowadays, the only rules we'll consider are the primitive rules *)
type rule = prim_rule
type goal = Goal.goal
type tactic = goal sigma -> goal list sigma
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