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OCaml

(***********************************************************************)
(* *)
(* Heptagon *)
(* *)
(* Gwenael Delaval, LIG/INRIA, UJF *)
(* Leonard Gerard, Parkas, ENS *)
(* Adrien Guatto, Parkas, ENS *)
(* Cedric Pasteur, Parkas, ENS *)
(* *)
(* Copyright 2012 ENS, INRIA, UJF *)
(* *)
(* This file is part of the Heptagon compiler. *)
(* *)
(* Heptagon is free software: you can redistribute it and/or modify it *)
(* under the terms of the GNU General Public License as published by *)
(* the Free Software Foundation, either version 3 of the License, or *)
(* (at your option) any later version. *)
(* *)
(* Heptagon 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 General Public License for more details. *)
(* *)
(* You should have received a copy of the GNU General Public License *)
(* along with Heptagon. If not, see <http://www.gnu.org/licenses/> *)
(* *)
(***********************************************************************)
open Heptagon
(* Transform [f (...) every e]
into [f (...) every r] and add an equation [r=e] *)
let is_var = function
| { e_desc = Evar _ } -> true
| _ -> false
let block funs acc b =
let b, (v, acc_eq_list) = Hept_mapfold.block funs ([], []) b in
{ b with b_local = v @ b.b_local; b_equs = acc_eq_list@b.b_equs }, acc
let edesc funs (v,acc_eq_list) ed =
let ed, (v, acc_eq_list) = Hept_mapfold.edesc funs (v,acc_eq_list) ed in
match ed with
| Eapp (op, e_list, Some re) when not (is_var re) ->
let re, vre, eqre = Reset.reset_var_from_exp re in
Eapp(op, e_list, Some re), (vre::v, eqre::acc_eq_list)
| Eiterator(it, op, n, pe_list, e_list, Some re) when not (is_var re) ->
let re, vre, eqre = Reset.reset_var_from_exp re in
Eiterator(it, op, n, pe_list, e_list, Some re),
(vre::v, eqre::acc_eq_list)
| _ -> ed, (v, acc_eq_list)
let program p =
let funs = { Hept_mapfold.defaults
with Hept_mapfold.edesc = edesc; Hept_mapfold.block = block } in
let p, _ = Hept_mapfold.program_it funs ([],[]) p in
p