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73 lines
3.2 KiB
OCaml
73 lines
3.2 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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(* *)
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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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(** This module simplify static expression of the program and deal with :
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(0^n)[3] ==> 0
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[3,4,5][2] ==> 5
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*)
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open Names
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open Types
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open Static
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open Obc
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open Obc_mapfold
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let extvaluedesc funs acc evd = match evd with
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| Warray (ev,e) ->
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let ev, acc = extvalue_it funs acc ev in
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(match ev.w_desc with
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| Wconst se ->
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let se = simplify QualEnv.empty se in
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(match se.se_desc with
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| Sarray_power (sv, [_]) ->
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Wconst sv, acc
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| Sarray_power (sv, _::idx) ->
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Wconst { se with se_desc = Sarray_power (sv, idx)}, acc
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| Sarray sv_l ->
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(match e.e_desc with
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| Eextvalue { w_desc = Wconst i } ->
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(try
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let indice = int_of_static_exp QualEnv.empty i in
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Wconst (Misc.nth_of_list (indice+1) sv_l), acc
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with _ -> raise Errors.Fallback)
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| _ -> raise Errors.Fallback
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)
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| _ -> raise Errors.Fallback
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)
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| _ -> raise Errors.Fallback
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)
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| _ -> raise Errors.Fallback
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let program p =
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let funs = { defaults with evdesc = extvaluedesc } in
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let p, _ = program_it funs [] p in
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p
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