Init is missing all the array stuff, and Ecall is strange, with an issue when reset an op, and a different treatment of op and node.
This commit is contained in:
Léonard Gérard
parent
ac0066a3d4
commit
a20b30909c
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@ -6,7 +6,6 @@
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(* Organization : Demons, LRI, University of Paris-Sud, Orsay *)
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(* *)
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(**************************************************************************)
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(* simple initialization analysis. This is almost trivial since *)
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(* input/outputs of a node are forced to be initialized *)
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(* add a special treatment of clock state variables whose initial *)
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@ -15,300 +14,304 @@
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(* if [clock c = C fby ec] then [merge c (C -> e) ...] is initialized *)
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(* if [e] is initialized only *)
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(* $Id: init.ml 615 2009-11-20 17:43:14Z pouzet $ *)
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open Misc
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open Names
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open Ident
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open Minils
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open Location
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open Format
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open Types
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type typ = | Iproduct of typ list | Ileaf of init
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type typ =
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| Iproduct of typ list
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| Ileaf of init
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and init =
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{ mutable i_desc: init_desc;
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mutable i_index: int }
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and init_desc =
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| Izero
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| Ione
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| Ivar
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| Imax of init * init
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| Ilink of init
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and init = { mutable i_desc : init_desc; mutable i_index : int}
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and init_desc = | Izero | Ione | Ivar | Imax of init * init | Ilink of init
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type typ_env =
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{ t_init: init; (* its initialisation type *)
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t_value: longname option; (* its initial value *)
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}
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{ t_init : init; (* its initialisation type *) t_value : longname option }
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(* its initial value *)
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(* typing errors *)
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exception Unify
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let index = ref 0
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let gen_index () = incr index; !index
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let new_var () = { i_desc = Ivar; i_index = gen_index () }
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let izero = { i_desc = Izero; i_index = gen_index () }
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let ione = { i_desc = Ione; i_index = gen_index () }
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let imax i1 i2 = { i_desc = Imax(i1, i2); i_index = gen_index () }
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let product l = Iproduct(l)
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let leaf i = Ileaf(i)
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let gen_index () = (incr index; !index)
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let new_var () = { i_desc = Ivar; i_index = gen_index (); }
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let izero = { i_desc = Izero; i_index = gen_index (); }
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let ione = { i_desc = Ione; i_index = gen_index (); }
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let imax i1 i2 = { i_desc = Imax (i1, i2); i_index = gen_index (); }
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let product l = Iproduct l
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let leaf i = Ileaf i
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(* basic operation on initialization values *)
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let rec irepr i =
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match i.i_desc with
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| Ilink(i_son) ->
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let i_son = irepr i_son in
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i.i_desc <- Ilink(i_son);
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i_son
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| _ -> i
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| Ilink i_son ->
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let i_son = irepr i_son in (i.i_desc <- Ilink i_son; i_son)
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| _ -> i
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(** Simplification rules for max. Nothing fancy here *)
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let max i1 i2 =
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let i1 = irepr i1 in
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let i2 = irepr i2 in
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match i1.i_desc, i2.i_desc with
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let i2 = irepr i2
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in
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match ((i1.i_desc), (i2.i_desc)) with
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| (Izero, Izero) -> izero
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| (Izero, _) -> i2
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| (_, Izero) -> i1
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| (_, Ione) | (Ione, _) -> ione
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| _ -> imax i1 i2
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let rec itype = function
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| Iproduct(ty_list) -> itype_list ty_list
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| Ileaf(i) -> i
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let rec itype =
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function | Iproduct ty_list -> itype_list ty_list | Ileaf i -> i
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and itype_list ty_list =
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List.fold_left (fun acc ty -> max acc (itype ty)) izero ty_list
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(* saturate an initialization type. Every element must be initialized *)
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let rec initialized i =
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let i = irepr i in
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match i.i_desc with
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let i = irepr i
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in
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match i.i_desc with
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| Izero -> ()
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| Ivar -> i.i_desc <- Ilink(izero)
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| Imax(i1, i2) -> initialized i1; initialized i2
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| Ilink(i) -> initialized i
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| Ivar -> i.i_desc <- Ilink izero
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| Imax (i1, i2) -> (initialized i1; initialized i2)
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| Ilink i -> initialized i
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| Ione -> raise Unify
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(* build an initialization type from a type *)
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let rec skeleton i ty =
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match ty with
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| Tbase _ -> leaf i
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| Tprod(ty_list) -> product (List.map (skeleton i) ty_list)
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let rec skeleton i =
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function
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| Tprod ty_list -> product (List.map (skeleton i) ty_list)
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| Tarray _ | Tid _ -> leaf i
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(* sub-typing *)
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let rec less left_ty right_ty =
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if left_ty == right_ty then ()
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if left_ty == right_ty
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then ()
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else
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match left_ty, right_ty with
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| Iproduct(l1), Iproduct(l2) -> List.iter2 less l1 l2
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| Ileaf(i1), Ileaf(i2) -> iless i1 i2
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| _ -> raise Unify
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(match (left_ty, right_ty) with
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| (Iproduct l1, Iproduct l2) -> List.iter2 less l1 l2
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| (Ileaf i1, Ileaf i2) -> iless i1 i2
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| _ -> raise Unify)
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and iless left_i right_i =
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if left_i == right_i then ()
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if left_i == right_i
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then ()
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else
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let left_i = irepr left_i in
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let right_i = irepr right_i in
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if left_i == right_i then ()
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else
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match left_i.i_desc, right_i.i_desc with
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| (Izero, _) | (_, Ione) -> ()
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| _, Izero -> initialized left_i
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| Imax(i1, i2), _ ->
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iless i1 right_i; iless i2 right_i
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| _, Ivar ->
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let left_i = occur_check right_i.i_index left_i in
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right_i.i_desc <- Ilink(left_i)
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| _, Imax(i1, i2) ->
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let i1 = occur_check left_i.i_index i1 in
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let i2 = occur_check left_i.i_index i2 in
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right_i.i_desc <- Ilink(imax left_i (imax i1 i2))
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| _ -> raise Unify
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(let left_i = irepr left_i in
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let right_i = irepr right_i
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in
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if left_i == right_i
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then ()
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else
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(match ((left_i.i_desc), (right_i.i_desc)) with
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| (Izero, _) | (_, Ione) -> ()
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| (_, Izero) -> initialized left_i
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| (Imax (i1, i2), _) -> (iless i1 right_i; iless i2 right_i)
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| (_, Ivar) ->
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let left_i = occur_check right_i.i_index left_i
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in right_i.i_desc <- Ilink left_i
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| (_, Imax (i1, i2)) ->
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let i1 = occur_check left_i.i_index i1 in
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let i2 = occur_check left_i.i_index i2
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in right_i.i_desc <- Ilink (imax left_i (imax i1 i2))
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| _ -> raise Unify))
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(* an inequation [a < t[a]] becomes [a = t[0]] *)
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and occur_check index i =
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and (* an inequation [a < t[a]] becomes [a = t[0]] *) occur_check index i =
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match i.i_desc with
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| Izero | Ione -> i
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| Ivar -> if i.i_index = index then izero else i
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| Imax(i1, i2) ->
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max (occur_check index i1) (occur_check index i2)
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| Ilink(i) -> occur_check index i
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| Izero | Ione -> i
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| Ivar -> if i.i_index = index then izero else i
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| Imax (i1, i2) -> max (occur_check index i1) (occur_check index i2)
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| Ilink i -> occur_check index i
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(* computes the initialization type of a merge *)
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let merge opt_c c_i_list =
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let rec search c c_i_list =
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match c_i_list with
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| [] -> izero
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| (c0, i) :: c_i_list -> if c = c0 then i else search c c_i_list in
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match opt_c with
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| [] -> izero
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| (c0, i) :: c_i_list -> if c = c0 then i else search c c_i_list
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in
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match opt_c with
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| None -> List.fold_left (fun acc (_, i) -> max acc i) izero c_i_list
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| Some(c) -> search c c_i_list
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module Printer = struct
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open Format
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let rec print_list_r print po sep pf ff = function
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| [] -> ()
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| x :: l ->
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fprintf ff "@[%s%a" po print x;
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List.iter (fprintf ff "%s@]@ @[%a" sep print) l;
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fprintf ff "%s@]" pf
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let rec fprint_init ff i = match i.i_desc with
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| Izero -> fprintf ff "0"
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| Ione -> fprintf ff "1"
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| Ivar -> fprintf ff "0"
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| Imax(i1, i2) -> fprintf ff "@[%a\\/%a@]" fprint_init i1 fprint_init i2
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| Ilink(i) -> fprint_init ff i
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let rec fprint_typ ff = function
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| Ileaf(i) -> fprint_init ff i
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| Iproduct(ty_list) ->
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fprintf ff "@[%a@]" (print_list_r fprint_typ "("" *"")") ty_list
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let output_typ oc ty =
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let ff = formatter_of_out_channel oc in
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fprintf ff "@[";
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fprint_typ ff ty;
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fprintf ff "@?@]"
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end
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module Error = struct
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open Location
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type error = | Eclash of typ * typ
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exception Error of location * error
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let error loc kind = raise (Error(loc, kind))
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let message loc kind =
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begin match kind with
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| Eclash(left_ty, right_ty) ->
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Printf.eprintf "%aInitialization error: this expression has type \
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| Some c -> search c c_i_list
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module Printer =
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struct
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open Format
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let rec print_list_r print po sep pf ff =
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function
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| [] -> ()
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| x :: l ->
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(fprintf ff "@[%s%a" po print x;
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List.iter (fprintf ff "%s@]@ @[%a" sep print) l;
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fprintf ff "%s@]" pf)
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let rec fprint_init ff i =
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match i.i_desc with
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| Izero -> fprintf ff "0"
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| Ione -> fprintf ff "1"
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| Ivar -> fprintf ff "0"
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| Imax (i1, i2) ->
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fprintf ff "@[%a\\/%a@]" fprint_init i1 fprint_init i2
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| Ilink i -> fprint_init ff i
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let rec fprint_typ ff =
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function
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| Ileaf i -> fprint_init ff i
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| Iproduct ty_list ->
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fprintf ff "@[%a@]" (print_list_r fprint_typ "(" " *" ")") ty_list
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let output_typ oc ty =
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let ff = formatter_of_out_channel oc
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in (fprintf ff "@["; fprint_typ ff ty; fprintf ff "@?@]")
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end
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module Error =
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struct
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open Location
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type error = | Eclash of typ * typ
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exception Error of location * error
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let error loc kind = raise (Error (loc, kind))
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let message loc kind =
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((match kind with
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| Eclash (left_ty, right_ty) ->
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Printf.eprintf
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"%aInitialization error: this expression has type \
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%a, \n\
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but is expected to have type %a\n"
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output_location loc
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Printer.output_typ left_ty
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Printer.output_typ right_ty
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end;
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raise Misc.Error
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end
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output_location loc Printer.output_typ left_ty Printer.
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output_typ right_ty);
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raise Misc.Error)
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end
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let less_exp e actual_ty expected_ty =
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try
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less actual_ty expected_ty
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with | Unify -> Error.message e.e_loc (Error.Eclash(actual_ty, expected_ty))
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try less actual_ty expected_ty
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with
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| Unify -> Error.message e.e_loc (Error.Eclash (actual_ty, expected_ty))
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let rec typing h e =
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match e.e_desc with
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| Econst(c) -> leaf izero
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| Evar(x) -> let { t_init = i } = Env.find x h in leaf i
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| Efby(None, e) ->
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expect h e (skeleton izero e.e_ty);
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leaf ione
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| Efby(Some _, e) ->
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expect h e (skeleton izero e.e_ty);
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leaf izero
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| Etuple(e_list) ->
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product (List.map (typing h) e_list)
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| Eop(_, e_list) ->
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let i = List.fold_left (fun acc e -> itype (typing h e)) izero e_list in
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skeleton i e.e_ty
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| Eapp(_, e_list) ->
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List.iter (fun e -> expect h e (skeleton izero e.e_ty)) e_list;
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skeleton izero e.e_ty
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| Eevery(_, e_list, n) ->
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List.iter (fun e -> expect h e (skeleton izero e.e_ty)) e_list;
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let { t_init = i } = Env.find n h in
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skeleton i e.e_ty
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| Ewhen(e, c, n) ->
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let { t_init = i1 } = Env.find n h in
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let i2 = itype (typing h e) in
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skeleton (max i1 i2) e.e_ty
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| Eifthenelse(e1, e2, e3) ->
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let i1 = itype (typing h e1) in
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let i2 = itype (typing h e2) in
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let i3 = itype (typing h e3) in
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let i = max i1 (max i2 i3) in
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skeleton i e.e_ty
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| Emerge(n, c_e_list) ->
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let { t_init = i; t_value = opt_c } = Env.find n h in
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let i =
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merge opt_c
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(List.map (fun (c, e) -> (c, itype (typing h e))) c_e_list) in
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skeleton i e.e_ty
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| Efield(e1,n) ->
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let i = itype (typing h e1) in
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skeleton i e.e_ty
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| Estruct(l) ->
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let i =
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List.fold_left
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(fun acc (_, e) -> max acc (itype (typing h e))) izero l in
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skeleton i e.e_ty
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| Econst c -> leaf izero
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| Evar x -> let { t_init = i } = Env.find x h in leaf i
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| Efby (None, e) -> (expect h e (skeleton izero e.e_ty); leaf ione)
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| Efby ((Some _), e) -> (expect h e (skeleton izero e.e_ty); leaf izero)
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| Etuple e_list -> product (List.map (typing h) e_list)
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(*TODO traitement singulier et empêche reset d'un 'op'*)
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| Ecall (op, e_list, None) when op.op_kind = Eop ->
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let i = List.fold_left (fun acc e -> itype (typing h e)) izero e_list
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in skeleton i e.e_ty
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| Ecall (op, e_list, reset) when op.op_kind = Enode ->
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List.iter (fun e -> expect h e (skeleton izero e.e_ty)) e_list;
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let i = match reset with
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| None -> izero
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| Some(n) -> let { t_init = i } = Env.find n h in i
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in skeleton i e.e_ty
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| Ewhen (e, c, n) ->
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let { t_init = i1 } = Env.find n h in
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let i2 = itype (typing h e) in skeleton (max i1 i2) e.e_ty
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| Eifthenelse (e1, e2, e3) ->
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let i1 = itype (typing h e1) in
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let i2 = itype (typing h e2) in
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let i3 = itype (typing h e3) in
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let i = max i1 (max i2 i3) in skeleton i e.e_ty
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| Emerge (n, c_e_list) ->
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let { t_init = i; t_value = opt_c } = Env.find n h in
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let i =
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merge opt_c
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(List.map (fun (c, e) -> (c, (itype (typing h e)))) c_e_list)
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in skeleton i e.e_ty
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| Efield (e1, n) -> let i = itype (typing h e1) in skeleton i e.e_ty
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| Estruct l ->
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let i =
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List.fold_left (fun acc (_, e) -> max acc (itype (typing h e))) izero
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l
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in skeleton i e.e_ty
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| Efield_update _ | Econstvar _ | Earray _ | Earray_op _ ->
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leaf izero (* TODO FIXME array_op dans init *)
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and expect h e expected_ty =
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let actual_ty = typing h e in
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less_exp e actual_ty expected_ty
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let rec typing_pat h = function
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| Evarpat(x) -> let { t_init = i } = Env.find x h in leaf i
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| Etuplepat(pat_list) ->
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product (List.map (typing_pat h) pat_list)
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let actual_ty = typing h e in less_exp e actual_ty expected_ty
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let rec typing_pat h =
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function
|
||||
| Evarpat x -> let { t_init = i } = Env.find x h in leaf i
|
||||
| Etuplepat pat_list -> product (List.map (typing_pat h) pat_list)
|
||||
|
||||
let typing_eqs h eq_list =
|
||||
List.iter
|
||||
List.iter
|
||||
(fun { eq_lhs = pat; eq_rhs = e } ->
|
||||
let ty_pat = typing_pat h pat in
|
||||
expect h e ty_pat) eq_list
|
||||
|
||||
let ty_pat = typing_pat h pat in expect h e ty_pat)
|
||||
eq_list
|
||||
|
||||
let build h eq_list =
|
||||
let rec build_pat h = function
|
||||
| Evarpat(x) -> Env.add x { t_init = new_var (); t_value = None } h
|
||||
| Etuplepat(pat_list) -> List.fold_left build_pat h pat_list in
|
||||
let rec build_pat h =
|
||||
function
|
||||
| Evarpat x -> Env.add x { t_init = new_var (); t_value = None; } h
|
||||
| Etuplepat pat_list -> List.fold_left build_pat h pat_list in
|
||||
let build_equation h { eq_lhs = pat; eq_rhs = e } =
|
||||
match pat, e.e_desc with
|
||||
| Evarpat(x), Efby(Some(Cconstr c), _) ->
|
||||
(* we keep the initial value of state variables *)
|
||||
Env.add x { t_init = new_var (); t_value = Some(c) } h
|
||||
| _ -> build_pat h pat in
|
||||
List.fold_left build_equation h eq_list
|
||||
|
||||
match (pat, (e.e_desc)) with
|
||||
| (Evarpat x, Efby ((Some (Cconstr c)), _)) ->
|
||||
(* we keep the initial value of state variables *)
|
||||
Env.add x { t_init = new_var (); t_value = Some c; } h
|
||||
| _ -> build_pat h pat
|
||||
in List.fold_left build_equation h eq_list
|
||||
|
||||
let sbuild h dec =
|
||||
List.fold_left
|
||||
(fun h { v_name = n } -> Env.add n { t_init = izero; t_value = None } h)
|
||||
h dec
|
||||
|
||||
List.fold_left
|
||||
(fun h { v_name = n } -> Env.add n { t_init = izero; t_value = None; } h)
|
||||
h dec
|
||||
|
||||
let typing_contract h contract =
|
||||
match contract with
|
||||
| None -> h
|
||||
| Some { c_local = l_list; c_eq = eq_list; c_assume = e_a;
|
||||
c_enforce = e_g; c_controllables = c_list } ->
|
||||
let h = sbuild h c_list in
|
||||
let h' = build h eq_list in
|
||||
typing_eqs h' eq_list;
|
||||
(* assumption *)
|
||||
expect h' e_a (skeleton izero e_a.e_ty);
|
||||
(* property *)
|
||||
expect h' e_g (skeleton izero e_g.e_ty);
|
||||
h
|
||||
|
||||
let typing_node { n_name = f; n_input = i_list; n_output = o_list;
|
||||
n_contract = contract;
|
||||
n_local = l_list; n_equs = eq_list } =
|
||||
| None -> h
|
||||
| Some
|
||||
{
|
||||
c_local = l_list;
|
||||
c_eq = eq_list;
|
||||
c_assume = e_a;
|
||||
c_enforce = e_g;
|
||||
c_controllables = c_list
|
||||
} ->
|
||||
let h = sbuild h c_list in
|
||||
let h' = build h eq_list
|
||||
in
|
||||
(* assumption *)
|
||||
(* property *)
|
||||
(typing_eqs h' eq_list;
|
||||
expect h' e_a (skeleton izero e_a.e_ty);
|
||||
expect h' e_g (skeleton izero e_g.e_ty);
|
||||
h)
|
||||
|
||||
let typing_node {
|
||||
n_name = f;
|
||||
n_input = i_list;
|
||||
n_output = o_list;
|
||||
n_contract = contract;
|
||||
n_local = l_list;
|
||||
n_equs = eq_list
|
||||
} =
|
||||
let h = sbuild Env.empty i_list in
|
||||
let h = sbuild h o_list in
|
||||
let h = typing_contract h contract in
|
||||
|
||||
let h = build h eq_list in
|
||||
typing_eqs h eq_list
|
||||
|
||||
let program ({ p_nodes = p_node_list } as p) =
|
||||
List.iter typing_node p_node_list;
|
||||
p
|
||||
|
||||
|
||||
let h = build h eq_list in typing_eqs h eq_list
|
||||
|
||||
let program (({ p_nodes = p_node_list } as p)) =
|
||||
(List.iter typing_node p_node_list; p)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue