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84 lines
3.6 KiB
OCaml
84 lines
3.6 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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(* Checks that a node not declared unsafe is safe, and set app unsafe flag. *)
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open Names
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open Location
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open Signature
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open Modules
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open Heptagon
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open Hept_mapfold
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type error =
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| Eshould_be_unsafe
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let message loc kind =
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begin match kind with
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| Eshould_be_unsafe ->
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Format.eprintf "%aThis exp is unsafe but the current node is not declared unsafe.@."
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print_location loc
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end;
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raise Errors.Error
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(* Returns whether an op is unsafe *)
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let unsafe_op op = match op with
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| Enode f | Efun f ->
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(find_value f).node_unsafe
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| _ -> (*TODO il y a des op unsafe ??*)
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false
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(* Update app unsafe field
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and gives an error if some exp is unsafe in a safe node ([unsafe]=false) *)
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let exp funs unsafe e =
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let e, unsafe = Hept_mapfold.exp funs unsafe e in
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match e.e_desc with
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| Eapp({ a_op = op } as app, e_l, r) ->
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let u = (unsafe_op op) or app.a_unsafe in
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if u & (not unsafe)
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then message e.e_loc Eshould_be_unsafe
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else {e with e_desc = Eapp({ app with a_unsafe = u }, e_l, r)}, (unsafe or u)
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| Eiterator(it, ({ a_op = op } as app), n, pe_list, e_list, r) ->
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let u = (unsafe_op op) or app.a_unsafe in
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if u & (not unsafe)
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then message e.e_loc Eshould_be_unsafe
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else
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{e with e_desc = Eiterator(it, { app with a_unsafe = u }, n, pe_list, e_list, r)}
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, (unsafe or u)
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| _ -> e, unsafe
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(* unsafe nodes are rejected if they are not declared unsafe *)
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let node_dec funs _ n = Hept_mapfold.node_dec funs n.n_unsafe n
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let funs =
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{ Hept_mapfold.defaults with
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exp = exp;
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node_dec = node_dec; }
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let program p =
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let p, _ = Hept_mapfold.program_it funs false p in
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p
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