package mopsa

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Source file binding.ml

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(****************************************************************************)
(*                                                                          *)
(* This file is part of MOPSA, a Modular Open Platform for Static Analysis. *)
(*                                                                          *)
(* Copyright (C) 2017-2019 The MOPSA Project.                               *)
(*                                                                          *)
(* This program is free software: you can redistribute it and/or modify     *)
(* it under the terms of the GNU Lesser General Public License as published *)
(* by the Free Software Foundation, either version 3 of the License, or     *)
(* (at your option) any later version.                                      *)
(*                                                                          *)
(* This program is distributed in the hope that it will be useful,          *)
(* but WITHOUT ANY WARRANTY; without even the implied warranty of           *)
(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *)
(* GNU Lesser General Public License for more details.                      *)
(*                                                                          *)
(* You should have received a copy of the GNU Lesser General Public License *)
(* along with this program.  If not, see <http://www.gnu.org/licenses/>.    *)
(*                                                                          *)
(****************************************************************************)

(** Bindings between Mopsa variables and Apron variables *)

open Mopsa


module Equiv = Equiv.Make(
  struct
    type t = var
    let compare = compare_var
    let print fmt v = Format.fprintf fmt "%a" pp_var v
  end
  )(Apron.Var)

type t = Equiv.t

let empty : t = Equiv.empty

let mopsa_to_apron_var (v:var) (b:t) : Apron.Var.t * t =
  try Equiv.find_l v b, b
  with Not_found ->
    let vv = Apron.Var.of_string v.vname in
    vv, Equiv.add (v,vv) b

let mopsa_to_apron_vars (l:var list) (b:t) : Apron.Var.t list * t =
  List.fold_left (fun (accv,accb) v ->
      let vv, accb = mopsa_to_apron_var v accb in
      (vv::accv),accb
    ) ([],b) l

let apron_to_mopsa_var (v:Apron.Var.t) (b:t) : var =
  try Equiv.find_r v b
  with Not_found -> panic "Apron variable %s not bound" (Apron.Var.to_string v)


let concat b1 b2 =
  Equiv.concat b1 b2

let remove_apron_var v b =
  Equiv.remove_r v b

let remove_apron_vars vl b =
  List.fold_left (fun acc v -> remove_apron_var v acc) b vl
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