heptagon/compiler/minils/minils.ml
Léonard Gérard b8b16a7355 blop
2011-03-21 17:41:00 +01:00

178 lines
5.3 KiB
OCaml

(**************************************************************************)
(* *)
(* Heptagon *)
(* *)
(* Author : Marc Pouzet *)
(* Organization : Demons, LRI, University of Paris-Sud, Orsay *)
(* *)
(**************************************************************************)
(* The internal MiniLustre representation *)
open Location
open Names
open Idents
open Signature
open Static
open Types
open Clocks
(** Warning: Whenever Minils ast is modified,
minils_format_version should be incremented. *)
let minils_format_version = "1"
type iterator_type =
| Imap
| Ifold
| Ifoldi
| Imapfold
type type_dec = {
t_name: qualname;
t_desc: tdesc;
t_loc: location }
and tdesc =
| Type_abs
| Type_alias of ty
| Type_enum of constructor_name list
| Type_struct of structure
and exp = {
e_desc : edesc;
e_base_ck : ck;
mutable e_ck: ck;
mutable e_ty: ty;
e_loc : location }
and edesc =
| Econst of static_exp
| Evar of var_ident
| Efby of static_exp option * exp
(** static_exp fby exp *)
| Eapp of app * exp list * var_ident option
(** app ~args=(exp,exp...) reset ~r=ident *)
| Ewhen of exp * constructor_name * var_ident
(** exp when Constructor(ident) *)
| Emerge of var_ident * (constructor_name * exp) list
(** merge ident (Constructor -> exp)+ *)
| Estruct of (field_name * exp) list
(** { field=exp; ... } *)
| Eiterator of iterator_type * app * static_exp * exp list * exp list * var_ident option
(** map f <<n>> (exp, exp...) reset ident *)
and app = { a_op: op; a_params: static_exp list; a_unsafe: bool }
(** Unsafe applications could have side effects
and be delicate about optimizations, !be careful! *)
and op =
| Eequal (** arg1 = arg2 *)
| Etuple (** (args) *)
| Efun of fun_name (** "Stateless" longname <<a_params>> (args) reset r *)
| Enode of fun_name (** "Stateful" longname <<a_params>> (args) reset r *)
| Eifthenelse (** if arg1 then arg2 else arg3 *)
| Efield (** arg1.a_param1 *)
| Efield_update (** { arg1 with a_param1 = arg2 } *)
| Earray (** [ args ] *)
| Earray_fill (** [arg1^a_param1] *)
| Eselect (** arg1[a_params] *)
| Eselect_slice (** arg1[a_param1..a_param2] *)
| Eselect_dyn (** arg1.[arg3...] default arg2 *)
| Eupdate (** [ arg1 with arg3..arg_n = arg2 ] *)
| Econcat (** arg1@@arg2 *)
type pat =
| Etuplepat of pat list
| Evarpat of var_ident
type eq = {
eq_lhs : pat;
eq_rhs : exp;
eq_loc : location }
type var_dec = {
v_ident : var_ident;
v_type : ty;
v_clock : ck;
v_loc : location }
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 : qualname;
n_stateful : bool;
n_input : var_dec list;
n_output : var_dec list;
n_contract : contract option;
(* GD: inglorious hack for controller call
mutable n_controller_call : var_ident list * var_ident list; *)
n_local : var_dec list;
n_equs : eq list;
n_loc : location;
n_params : param list;
n_params_constraints : size_constraint list }
type const_dec = {
c_name : qualname;
c_type : ty;
c_value : static_exp;
c_loc : location }
type program = {
p_modname : modul;
p_format_version : string;
p_opened : modul 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 ~ty ?(clock = fresh_clock())
?(loc = no_location) ?(base_clock = Cbase) desc =
{ e_desc = desc; e_ty = ty;
e_base_ck = base_clock; e_ck = clock; e_loc = loc }
let mk_var_dec ?(loc = no_location) ?(clock = fresh_clock()) ident ty =
{ v_ident = ident; v_type = ty; v_clock = clock; v_loc = loc }
let mk_equation ?(loc = no_location) pat exp =
{ eq_lhs = pat; eq_rhs = exp; eq_loc = loc }
let mk_node
?(input = []) ?(output = []) ?(contract = None) ?(local = []) ?(eq = [])
?(stateful = true) ?(loc = no_location) ?(param = []) ?(constraints = [])
?(pinst = ([],[])) name =
{ n_name = name;
n_stateful = stateful;
n_input = input;
n_output = output;
n_contract = contract;
(* n_controller_call = pinst;*)
n_local = local;
n_equs = eq;
n_loc = loc;
n_params = param;
n_params_constraints = constraints }
let mk_type_dec type_desc name loc =
{ t_name = name; t_desc = type_desc; t_loc = loc }
let mk_const_dec id ty e loc =
{ c_name = id; c_type = ty; c_value = e; c_loc = loc }
let mk_app ?(params=[]) ?(unsafe=false) op =
{ a_op = op; a_params = params; a_unsafe = unsafe }
(** The modname field has to be set when known, TODO LG : format_version *)
let mk_program o n t c =
{ p_modname = Module ""; p_format_version = "";
p_opened = o; p_nodes = n; p_types = t; p_consts = c }
let void = mk_exp ~ty:Types.Tunit (Eapp (mk_app Etuple, [], None))