87 lines
3.7 KiB
OCaml
87 lines
3.7 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Heptagon *)
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(* *)
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(* Gwenael Delaval, LIG/INRIA, UJF *)
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(* Leonard Gerard, Parkas, ENS *)
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(* Adrien Guatto, Parkas, ENS *)
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(* Cedric Pasteur, Parkas, ENS *)
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(* Marc Pouzet, Parkas, ENS *)
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(* *)
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(* Copyright 2012 ENS, INRIA, UJF *)
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(* *)
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(* This file is part of the Heptagon compiler. *)
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(* *)
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(* Heptagon is free software: you can redistribute it and/or modify it *)
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(* under the terms of the GNU General Public License as published by *)
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(* the Free Software Foundation, either version 3 of the License, or *)
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(* (at your option) any later version. *)
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(* *)
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(* Heptagon is distributed in the hope that it will be useful, *)
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(* but WITHOUT ANY WARRANTY; without even the implied warranty of *)
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(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *)
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(* GNU General Public License for more details. *)
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(* *)
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(* You should have received a copy of the GNU General Public License *)
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(* along with Heptagon. If not, see <http://www.gnu.org/licenses/> *)
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(* *)
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(***********************************************************************)
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open Obc
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open Obc_mapfold
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open Types
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open Initial
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let act funs act_list a =
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let a, _ = Obc_mapfold.act funs [] a in
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match a with
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| Aassgn (lhs, e) -> (* remove x=x equations *)
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(match e.e_desc with
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| Eextvalue w when (Obc_compare.compare_lhs_extvalue lhs w = 0)
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-> a, act_list (* removal of action *)
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| _ -> a, a :: act_list
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)
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| Acase (_, []) -> a, act_list (* removal *)
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| Acase ({e_desc =
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Eextvalue(
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{w_desc = Wconst ({se_desc = Sbool b})}
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)
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},
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c_b_l) ->
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let pb = if b then ptrue else pfalse in
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let c_b_l = List.filter (fun (c,_b) -> c = pb) c_b_l in
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begin
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match c_b_l with
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[_c,b] ->
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let a = Ablock b in
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a, a :: act_list
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| [] -> a, act_list
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| _ -> assert false (* More than one case after filter *)
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end
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| Acase ({e_desc =
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Eextvalue(
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{w_desc = Wconst ({se_desc = Sconstructor ce})}
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)
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},
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c_b_l) ->
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let c_b_l = List.filter (fun (c,_b) -> c = ce) c_b_l in
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begin
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match c_b_l with
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[_c,b] ->
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let a = Ablock b in
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a, a :: act_list
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| [] -> a, act_list
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| _ -> assert false (* More than one case after filter *)
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end
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| Afor(_, _, _, { b_body = [] }) -> a, act_list (* removal *)
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| _ -> a, a :: act_list
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let block funs acc b =
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let _, act_list = Obc_mapfold.block funs [] b in
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{ b with b_body = List.rev act_list }, acc
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let program p =
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let funs = { Obc_mapfold.defaults with block = block; act = act } in
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let p, _ = Obc_mapfold.program_it funs [] p in
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p
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