314 lines
8.9 KiB
OCaml
314 lines
8.9 KiB
OCaml
(**************************************************************************)
|
|
(* *)
|
|
(* Heptagon *)
|
|
(* *)
|
|
(* Author : Marc Pouzet *)
|
|
(* Organization : Demons, LRI, University of Paris-Sud, Orsay *)
|
|
(* *)
|
|
(**************************************************************************)
|
|
|
|
(* The internal MiniLustre representation *)
|
|
|
|
open Location
|
|
open Dep
|
|
open Misc
|
|
open Names
|
|
open Ident
|
|
open Signature
|
|
open Static
|
|
open Types
|
|
|
|
type iterator_type =
|
|
| Imap
|
|
| Ifold
|
|
| Imapfold
|
|
|
|
type type_dec =
|
|
{ t_name: name;
|
|
t_desc: tdesc;
|
|
t_loc: location }
|
|
|
|
and tdesc =
|
|
| Type_abs
|
|
| Type_enum of name list
|
|
| Type_struct of structure
|
|
|
|
and exp =
|
|
{ e_desc: edesc; (* its descriptor *)
|
|
mutable e_ck: ck;
|
|
mutable e_ty: ty;
|
|
e_loc: location }
|
|
|
|
and edesc =
|
|
| Econst of const
|
|
| Evar of ident
|
|
| Econstvar of name
|
|
| Efby of const option * exp
|
|
| Etuple of exp list
|
|
| Ecall of op_desc * exp list * ident option (** [op_desc] is the function called
|
|
[exp list] is the passed arguments
|
|
[ident option] is the optional reset condition *)
|
|
|
|
| Ewhen of exp * longname * ident
|
|
| Emerge of ident * (longname * exp) list
|
|
| Eifthenelse of exp * exp * exp
|
|
| Efield of exp * longname
|
|
| Efield_update of longname * exp * exp (*field, record, value*)
|
|
| Estruct of (longname * exp) list
|
|
| Earray of exp list
|
|
| Earray_op of array_op
|
|
|
|
and array_op =
|
|
| Erepeat of size_exp * exp
|
|
| Eselect of size_exp list * exp (*indices, array*)
|
|
| Eselect_dyn of exp list * size_exp list * exp * exp (*indices, bounds, array, default*)
|
|
| Eupdate of size_exp list * exp * exp (*indices, array, value*)
|
|
| Eselect_slice of size_exp * size_exp * exp (*lower bound, upper bound, array*)
|
|
| Econcat of exp * exp
|
|
| Eiterator of iterator_type * op_desc * size_exp * exp list * ident option
|
|
(** [op_desc] is the function iterated,
|
|
[size_exp] is the size of the iteration,
|
|
[exp list] is the passed arguments,
|
|
[ident option] is the optional reset condition *)
|
|
|
|
and op_desc = { op_name: longname; op_params: size_exp list; op_kind: op_kind }
|
|
and op_kind = | Eop | Enode
|
|
|
|
and ct =
|
|
| Ck of ck
|
|
| Cprod of ct list
|
|
|
|
and ck =
|
|
| Cbase
|
|
| Cvar of link ref
|
|
| Con of ck * longname * ident
|
|
|
|
and link =
|
|
| Cindex of int
|
|
| Clink of ck
|
|
|
|
and const =
|
|
| Cint of int
|
|
| Cfloat of float
|
|
| Cconstr of longname
|
|
| Carray of size_exp * const
|
|
|
|
and pat =
|
|
| Etuplepat of pat list
|
|
| Evarpat of ident
|
|
|
|
type eq =
|
|
{ eq_lhs : pat;
|
|
eq_rhs : exp;
|
|
eq_loc : location }
|
|
|
|
type var_dec =
|
|
{ v_name : ident;
|
|
v_type : ty;
|
|
v_clock : ck }
|
|
|
|
type contract =
|
|
{ c_assume : exp;
|
|
c_enforce : exp;
|
|
c_controllables : var_dec list;
|
|
c_local : var_dec list;
|
|
c_eq : eq list;
|
|
}
|
|
|
|
type node_dec =
|
|
{ n_name : name;
|
|
n_input : var_dec list;
|
|
n_output : var_dec list;
|
|
n_contract : contract option;
|
|
n_local : var_dec list;
|
|
n_equs : eq list;
|
|
n_loc : location;
|
|
n_params : param list;
|
|
n_params_constraints : size_constr list;
|
|
n_params_instances : (int list) list; }(*TODO commenter ou passer en env*)
|
|
|
|
type const_dec =
|
|
{ c_name : name;
|
|
c_value : size_exp;
|
|
c_loc : location; }
|
|
|
|
type program =
|
|
{ p_pragmas: (name * string) list;
|
|
p_opened : name list;
|
|
p_types : type_dec list;
|
|
p_nodes : node_dec list;
|
|
p_consts : const_dec list; }
|
|
|
|
|
|
|
|
(*Helper functions to build the AST*)
|
|
|
|
|
|
let mk_exp ?(exp_ty = Tprod []) ?(clock = Cbase) ?(loc = no_location) desc =
|
|
{ e_desc = desc; e_ty = exp_ty; e_ck = clock; e_loc = loc }
|
|
|
|
let mk_equation pat exp =
|
|
{ eq_lhs = pat; eq_rhs = exp; eq_loc = no_location }
|
|
|
|
let rec size_exp_of_exp e =
|
|
match e.e_desc with
|
|
| Econstvar n -> SVar n
|
|
| Econst (Cint i) -> SConst i
|
|
| Ecall(op, [e1;e2], _) ->
|
|
let sop = op_from_app_name op.op_name in
|
|
SOp(sop, size_exp_of_exp e1, size_exp_of_exp e2)
|
|
| _ -> raise Not_static
|
|
|
|
(** @return the list of bounds of an array type*)
|
|
let rec bounds_list ty =
|
|
match ty with
|
|
| Tarray(ty, n) -> n::(bounds_list ty)
|
|
| _ -> []
|
|
|
|
(** @return the [var_dec] object corresponding to the name [n]
|
|
in a list of [var_dec]. *)
|
|
let rec vd_find n = function
|
|
| [] -> Format.printf "Not found var %s\n" (name n); raise Not_found
|
|
| vd::l ->
|
|
if vd.v_name = n then vd else vd_find n l
|
|
|
|
(** @return whether an object of name [n] belongs to
|
|
a list of [var_dec]. *)
|
|
let rec vd_mem n = function
|
|
| [] -> false
|
|
| vd::l -> vd.v_name = n or (vd_mem n l)
|
|
|
|
(** @return whether [ty] corresponds to a record type. *)
|
|
let is_record_type ty = match ty with
|
|
| Tid n ->
|
|
(try
|
|
ignore (Modules.find_struct n); true
|
|
with
|
|
Not_found -> false)
|
|
| _ -> false
|
|
|
|
module Vars =
|
|
struct
|
|
let add x acc =
|
|
if List.mem x acc then acc else x :: acc
|
|
|
|
let rec vars_pat acc = function
|
|
| Evarpat x -> x :: acc
|
|
| Etuplepat pat_list -> List.fold_left vars_pat acc pat_list
|
|
|
|
let rec vars_ck acc = function
|
|
| Con(ck, c, n) -> add n acc
|
|
| Cbase | Cvar { contents = Cindex _ } -> acc
|
|
| Cvar { contents = Clink ck } -> vars_ck acc ck
|
|
|
|
let rec read is_left acc e =
|
|
let acc =
|
|
match e.e_desc with
|
|
| Emerge(x, c_e_list) ->
|
|
let acc = add x acc in
|
|
List.fold_left (fun acc (_, e) -> read is_left acc e) acc c_e_list
|
|
| Eifthenelse(e1, e2, e3) ->
|
|
read is_left (read is_left (read is_left acc e1) e2) e3
|
|
| Ewhen(e, c, x) ->
|
|
let acc = add x acc in
|
|
read is_left acc e
|
|
| Etuple(e_list) -> List.fold_left (read is_left) acc e_list
|
|
| Ecall(_, e_list, None) ->
|
|
List.fold_left (read is_left) acc e_list
|
|
| Ecall(_, e_list, Some x) ->
|
|
let acc = add x acc in
|
|
List.fold_left (read is_left) acc e_list
|
|
| Efby(_, e) ->
|
|
if is_left then vars_ck acc e.e_ck else read is_left acc e
|
|
| Efield(e, _) -> read is_left acc e
|
|
| Estruct(f_e_list) ->
|
|
List.fold_left (fun acc (_, e) -> read is_left acc e) acc f_e_list
|
|
| Econst _ | Econstvar _ -> acc
|
|
| Efield_update (_, e1, e2) ->
|
|
read is_left (read is_left acc e1) e2
|
|
(*Array operators*)
|
|
| Earray e_list -> List.fold_left (read is_left) acc e_list
|
|
| Earray_op op -> read_array_op is_left acc op
|
|
in
|
|
vars_ck acc e.e_ck
|
|
|
|
and read_array_op is_left acc = function
|
|
| Erepeat (_,e) -> read is_left acc e
|
|
| Eselect (_,e) -> read is_left acc e
|
|
| Eselect_dyn (e_list, _, e1, e2) ->
|
|
let acc = List.fold_left (read is_left) acc e_list in
|
|
read is_left (read is_left acc e1) e2
|
|
| Eupdate (_, e1, e2) ->
|
|
read is_left (read is_left acc e1) e2
|
|
| Eselect_slice (_ , _, e) -> read is_left acc e
|
|
| Econcat (e1, e2) ->
|
|
read is_left (read is_left acc e1) e2
|
|
| Eiterator (_, _, _, e_list, None) ->
|
|
List.fold_left (read is_left) acc e_list
|
|
| Eiterator (_, _, _, e_list, Some x) ->
|
|
let acc = add x acc in
|
|
List.fold_left (read is_left) acc e_list
|
|
|
|
let rec remove x = function
|
|
| [] -> []
|
|
| y :: l -> if x = y then l else y :: remove x l
|
|
|
|
let def acc { eq_lhs = pat } = vars_pat acc pat
|
|
|
|
let read is_left { eq_lhs = pat; eq_rhs = e } =
|
|
match pat, e.e_desc with
|
|
| Evarpat(n), Efby(_, e1) ->
|
|
if is_left
|
|
then remove n (read is_left [] e1)
|
|
else read is_left [] e1
|
|
| _ -> read is_left [] e
|
|
|
|
let antidep { eq_rhs = e } =
|
|
match e.e_desc with Efby _ -> true | _ -> false
|
|
|
|
let clock { eq_rhs = e } =
|
|
match e.e_desc with
|
|
| Emerge(_, (_, e) :: _) -> e.e_ck
|
|
| _ -> e.e_ck
|
|
|
|
let head ck =
|
|
let rec headrec ck l =
|
|
match ck with
|
|
| Cbase | Cvar { contents = Cindex _ } -> l
|
|
| Con(ck, c, n) -> headrec ck (n :: l)
|
|
| Cvar { contents = Clink ck } -> headrec ck l
|
|
in
|
|
headrec ck []
|
|
|
|
(** Returns a list of memory vars (x in x = v fby e)
|
|
appearing in an equation. *)
|
|
let memory_vars ({ eq_lhs = _; eq_rhs = e } as eq) =
|
|
match e.e_desc with
|
|
| Efby(_, _) -> def [] eq
|
|
| _ -> []
|
|
end
|
|
|
|
(*
|
|
(* data-flow dependences. pre-dependences are discarded *)
|
|
module DataFlowDep = Make
|
|
(struct
|
|
type equation = eq
|
|
let read eq = Vars.read true eq
|
|
let def = Vars.def
|
|
let linear_read eq = Vars.linear_use [] eq.eq_rhs
|
|
let mem_reset = Vars.mem_reset
|
|
let antidep = Vars.antidep
|
|
end)
|
|
|
|
(* all dependences between variables *)
|
|
module AllDep = Make
|
|
(struct
|
|
type equation = eq
|
|
let read eq = Vars.read false eq
|
|
let linear_read eq = Vars.linear_use [] eq.eq_rhs
|
|
let mem_reset = Vars.mem_reset
|
|
let def = Vars.def
|
|
let antidep eq = false
|
|
end)
|
|
*)
|
|
|