254 lines
9.4 KiB
OCaml
254 lines
9.4 KiB
OCaml
(**************************************************************************)
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(* *)
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(* Heptagon *)
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(* *)
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(* Author : Marc Pouzet *)
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(* Organization : Demons, LRI, University of Paris-Sud, Orsay *)
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(* *)
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(**************************************************************************)
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(* removing switch statements and translation into Minils *)
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open Location
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open Misc
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open Names
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open Idents
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open Static
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open Types
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open Clocks
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open Format
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open Minils
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open Mls_utils
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open Signature
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module Error =
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struct
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type error =
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| Ereset_not_var
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| Eunsupported_language_construct
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| Enormalization
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let message loc kind =
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begin match kind with
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| Ereset_not_var ->
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eprintf "%aOnly variables can be used for resets.@."
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print_location loc
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| Eunsupported_language_construct ->
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eprintf "%aThis construct is not supported by MiniLS.@."
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print_location loc
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| Enormalization ->
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eprintf "%aThis construct should have been normalized.@."
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print_location loc
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end;
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raise Errors.Error
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end
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let fresh = Idents.gen_fresh "hept2mls"
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(function Heptagon.Enode f -> (shortname f)
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| _ -> "n")
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let translate_var { Heptagon.v_ident = n; Heptagon.v_type = ty; Heptagon.v_linearity = linearity;
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Heptagon.v_loc = loc; Heptagon.v_clock = ck } =
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mk_var_dec ~loc:loc n ty linearity ck
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let translate_reset = function
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| Some { Heptagon.e_desc = Heptagon.Evar n } -> Some n
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| Some re -> Error.message re.Heptagon.e_loc Error.Ereset_not_var
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| None -> None
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let translate_iterator_type = function
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| Heptagon.Imap -> Imap
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| Heptagon.Imapi -> Imapi
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| Heptagon.Ifold -> Ifold
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| Heptagon.Ifoldi -> Ifoldi
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| Heptagon.Imapfold -> Imapfold
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let rec translate_op = function
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| Heptagon.Eifthenelse -> Eifthenelse
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| Heptagon.Efun f -> Efun f
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| Heptagon.Enode f -> Enode f
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| Heptagon.Efield -> assert false
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| Heptagon.Efield_update -> Efield_update
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| Heptagon.Earray_fill -> Earray_fill
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| Heptagon.Eselect -> Eselect
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| Heptagon.Eselect_dyn -> Eselect_dyn
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| Heptagon.Eupdate -> Eupdate
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| Heptagon.Eselect_slice -> Eselect_slice
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| Heptagon.Eselect_trunc -> Eselect_trunc
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| Heptagon.Econcat -> Econcat
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| Heptagon.Earray -> Earray
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| Heptagon.Etuple -> Misc.internal_error "hept2mls Etuple"
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| Heptagon.Earrow -> assert false
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| Heptagon.Ereinit -> assert false
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let translate_app app =
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mk_app ~params:app.Heptagon.a_params
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~unsafe:app.Heptagon.a_unsafe
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~id:(Some (fresh app.Heptagon.a_op))
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(translate_op app.Heptagon.a_op)
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let rec translate_extvalue e =
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let mk_extvalue =
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let clock = match e.Heptagon.e_ct_annot with
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| None -> fresh_clock ()
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| Some ct -> assert_1 (unprod ct)
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in
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mk_extvalue ~loc:e.Heptagon.e_loc ~linearity:e.Heptagon.e_linearity
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~ty:e.Heptagon.e_ty ~clock:clock
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in
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match e.Heptagon.e_desc with
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| Heptagon.Econst c -> mk_extvalue (Wconst c)
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| Heptagon.Evar x -> mk_extvalue (Wvar x)
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| Heptagon.Ewhen (e, c, x) ->
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mk_extvalue (Wwhen (translate_extvalue e, c, x))
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| Heptagon.Eapp({ Heptagon.a_op = Heptagon.Efield;
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Heptagon.a_params = params }, e_list, _) ->
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let e = assert_1 e_list in
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let f = assert_1 params in
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let fn = match f.se_desc with Sfield fn -> fn | _ -> assert false in
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mk_extvalue (Wfield (translate_extvalue e, fn))
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| Heptagon.Eapp({ Heptagon.a_op = Heptagon.Ereinit }, e_list, _) ->
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let e1, e2 = assert_2 e_list in
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mk_extvalue (Wreinit (translate_extvalue e1, translate_extvalue e2))
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| _ -> Error.message e.Heptagon.e_loc Error.Enormalization
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let rec translate ({ Heptagon.e_desc = desc; Heptagon.e_ty = ty;
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Heptagon.e_level_ck = b_ck; Heptagon.e_linearity = linearity;
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Heptagon.e_ct_annot = a_ct; Heptagon.e_loc = loc; } as e) =
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let desc = match desc with
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| Heptagon.Econst _
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| Heptagon.Evar _
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| Heptagon.Eapp({ Heptagon.a_op = Heptagon.Efield | Heptagon.Ereinit }, _, _) ->
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let w = translate_extvalue e in
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Eextvalue w
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| Heptagon.Ewhen (e,c,x) -> Ewhen (translate e, c, x)
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| Heptagon.Epre(None, e) ->
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Efby(None, translate_extvalue e)
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| Heptagon.Epre(Some c, e) ->
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Efby(Some c, translate_extvalue e)
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| Heptagon.Efby ({ Heptagon.e_desc = Heptagon.Econst c }, e) ->
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Efby(Some c, translate_extvalue e)
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| Heptagon.Estruct f_e_list ->
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let f_e_list = List.map
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(fun (f, e) -> (f, translate_extvalue e)) f_e_list in
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Estruct f_e_list
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| Heptagon.Eapp({ Heptagon.a_op = Heptagon.Earrow }, _, _) ->
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Error.message loc Error.Eunsupported_language_construct
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| Heptagon.Eapp(app, e_list, reset) ->
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Eapp (translate_app app, List.map translate_extvalue e_list, translate_reset reset)
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| Heptagon.Eiterator(it, app, n, pe_list, e_list, reset) ->
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Eiterator (translate_iterator_type it,
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translate_app app, n,
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List.map translate_extvalue pe_list,
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List.map translate_extvalue e_list,
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translate_reset reset)
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| Heptagon.Efby _ | Heptagon.Esplit _
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| Heptagon.Elast _ ->
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Error.message loc Error.Eunsupported_language_construct
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| Heptagon.Emerge (x, c_e_list) ->
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Emerge (x, List.map (fun (c,e)-> c, translate_extvalue e) c_e_list)
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in
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match a_ct with
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| None -> mk_exp b_ck ty ~loc:loc ~linearity:linearity desc
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| Some ct -> mk_exp b_ck ty ~ct:ct ~loc:loc ~linearity:linearity desc
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let rec translate_pat = function
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| Heptagon.Evarpat(n) -> Evarpat n
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| Heptagon.Etuplepat(l) -> Etuplepat (List.map translate_pat l)
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let rec translate_eq { Heptagon.eq_desc = desc; Heptagon.eq_loc = loc } =
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match desc with
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| Heptagon.Eeq(p, e) ->
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begin match e.Heptagon.e_desc with
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| Heptagon.Eapp({ Heptagon.a_unsafe = unsafe },_,_)
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| Heptagon.Eiterator(_,{ Heptagon.a_unsafe = unsafe},_,_,_,_) ->
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mk_equation ~loc:loc unsafe (translate_pat p) (translate e)
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| _ -> mk_equation ~loc:loc false (translate_pat p) (translate e)
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end
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| Heptagon.Eblock _ | Heptagon.Eswitch _
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| Heptagon.Epresent _ | Heptagon.Eautomaton _ | Heptagon.Ereset _ ->
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Error.message loc Error.Eunsupported_language_construct
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let translate_contract contract =
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match contract with
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| None -> None
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| Some { Heptagon.c_block = { Heptagon.b_local = v;
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Heptagon.b_equs = eq_list };
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Heptagon.c_assume = e_a;
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Heptagon.c_enforce = e_g;
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Heptagon.c_controllables = l_c } ->
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Some { c_local = List.map translate_var v;
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c_eq = List.map translate_eq eq_list;
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c_assume = translate_extvalue e_a;
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c_enforce = translate_extvalue e_g;
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c_controllables = List.map translate_var l_c }
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let node n =
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enter_node n.Heptagon.n_name;
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{ n_name = n.Heptagon.n_name;
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n_stateful = n.Heptagon.n_stateful;
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n_unsafe = n.Heptagon.n_unsafe;
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n_input = List.map translate_var n.Heptagon.n_input;
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n_output = List.map translate_var n.Heptagon.n_output;
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n_contract = translate_contract n.Heptagon.n_contract;
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n_controller_call = ([],[]);
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n_local = List.map translate_var n.Heptagon.n_block.Heptagon.b_local;
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n_equs = List.map translate_eq n.Heptagon.n_block.Heptagon.b_equs;
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n_loc = n.Heptagon.n_loc ;
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n_params = n.Heptagon.n_params;
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n_param_constraints = n.Heptagon.n_param_constraints;
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n_mem_alloc = [] }
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let typedec
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{Heptagon.t_name = n; Heptagon.t_desc = tdesc; Heptagon.t_loc = loc} =
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let onetype = function
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| Heptagon.Type_abs -> Type_abs
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| Heptagon.Type_alias ln -> Type_alias ln
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| Heptagon.Type_enum tag_list -> Type_enum tag_list
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| Heptagon.Type_struct field_ty_list -> Type_struct field_ty_list
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in
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{ t_name = n; t_desc = onetype tdesc; t_loc = loc }
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let const_dec cd =
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{ Minils.c_name = cd.Heptagon.c_name;
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Minils.c_value = cd.Heptagon.c_value;
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Minils.c_type = cd.Heptagon.c_type;
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Minils.c_loc = cd.Heptagon.c_loc; }
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let program_desc pd = match pd with
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| Heptagon.Ptype td -> Ptype (typedec td)
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| Heptagon.Pnode nd -> Pnode (node nd)
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| Heptagon.Pconst cd -> Pconst (const_dec cd)
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let program
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{ Heptagon.p_modname = modname;
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Heptagon.p_opened = modules;
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Heptagon.p_desc = desc_list } =
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{ p_modname = modname;
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p_format_version = minils_format_version;
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p_opened = modules;
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p_desc = List.map program_desc desc_list }
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let signature s =
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{ sig_name = s.Heptagon.sig_name;
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sig_inputs = s.Heptagon.sig_inputs;
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sig_stateful = s.Heptagon.sig_stateful;
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sig_outputs = s.Heptagon.sig_outputs;
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sig_params = s.Heptagon.sig_params;
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sig_param_constraints = s.Heptagon.sig_param_constraints;
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sig_external = s.Heptagon.sig_external;
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sig_loc = s.Heptagon.sig_loc }
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let interface i =
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let interface_decl id = match id with
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| Heptagon.Itypedef td -> Itypedef (typedec td)
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| Heptagon.Iconstdef cd -> Iconstdef (const_dec cd)
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| Heptagon.Isignature s -> Isignature (signature s)
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in
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{ i_modname = i.Heptagon.i_modname;
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i_opened = i.Heptagon.i_opened;
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i_desc = List.map interface_decl i.Heptagon.i_desc }
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