CristalCaveGem » LustreC

(********************************************************************)

(*                                                                  *)

(*  The LustreC compiler toolset   /  The LustreC Development Team  *)

(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)

(*                                                                  *)

(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)

(*  under the terms of the GNU Lesser General Public License        *)

(*  version 2.1.                                                    *)

(*                                                                  *)

(********************************************************************)

open Format

open Log

open Compiler_common

open Utils

open Lustre_types

let usage = "Usage: lustrev [options] \x1b[4msource file\x1b[0m"

let extensions = [".ec"; ".lus"; ".lusi"]

(* verify a .lus source file 

we have multiple "backends"

- zustre: linked to z3/spacer. Shall preserve the structure and rely on contracts. Produces both a lustre model with new properties, maybe as a lusi with lustre contract, and a JSON summarizing the results and providing tests cases or counter examples if any

- seal: linked to seal. Require global inline and main node

  focuses only on the selected node (the main)

  map the machine code into SEAL datastructure and compute invariants

  - provides the node and its information (typical point of interest for taylor expansion, range for inputs, existing invariants, computation error for the node content)

  - simplification of program through taylor expansion

  - scaling when provided with typical ranges (not required to be sound for the moment)

  - computation of lyapunov invariants

  - returns an annotated node with invariants and a JSON to explain computation

  - could also returns plots

- tiny: linked to tiny library to perform floating point analyses

  shall be provided with ranges for inputs or local variables (memories)

*)

let rec verify dirname basename extension =

  let source_name = dirname ^ "/" ^ basename ^ extension in

  Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v 0>");

  decr Options.verbose_level;

  (* Parsing source *)

  let prog = parse source_name extension in

  (* Checking which solver is active *)

  incr Options.verbose_level;

  let verifier = Verifiers.get_active () in

  let module Verifier = (val verifier : VerifierType.S) in

  decr Options.verbose_level;

  (* Normalizing it *)

  let prog, dependencies = 

    Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v 2>.. Phase 1 : Normalisation@,");

    try

      incr Options.verbose_level;

      let params = Verifier.get_normalization_params () in

      decr Options.verbose_level;

      Compiler_stages.stage1 params prog dirname basename extension

    with Compiler_stages.StopPhase1 prog -> (

        assert false

    )

  in

  Log.report ~level:1 (fun fmt -> fprintf fmt "@]@,");

  Log.report ~level:3 (fun fmt -> fprintf fmt ".. Normalized program:@ %a@ "Printers.pp_prog prog);

  Log.report ~level:1 (fun fmt -> fprintf fmt "@[<v 2>.. Phase 2 : Machines generation@,");

  let machine_code = 

    Compiler_stages.stage2 prog 

  in

  Log.report ~level:1 (fun fmt -> fprintf fmt "@]@ ");

  Log.report ~level:3 (fun fmt -> fprintf fmt ".. Generated machines:@ %a@ "Machine_code_common.pp_machines machine_code);

  if Scopes.Plugin.show_scopes () then

    begin

      let all_scopes = Scopes.compute_scopes prog !Options.main_node in

      (* Printing scopes *)

      if !Options.verbose_level >= 1 then

	Format.printf "Possible scopes are:@   ";

      Format.printf "@[<v>%a@ @]@ @?" Scopes.print_scopes all_scopes;

      exit 0

    end;

  let machine_code = Plugins.refine_machine_code prog machine_code in

  assert (dependencies = []); (* Do not handle deps yet *)

  incr Options.verbose_level;

  Verifier.run basename prog machine_code;

  begin

    decr Options.verbose_level;

    Log.report ~level:1 (fun fmt -> fprintf fmt ".. done !@ ");

    incr Options.verbose_level;

    Log.report ~level:1 (fun fmt -> fprintf fmt "@]@.");

    (* We stop the process here *)

    exit 0

  end

let anonymous filename =

  let ok_ext, ext = List.fold_left

    (fun (ok, ext) ext' ->

      if not ok && Filename.check_suffix filename ext' then

	true, ext'

      else

	ok, ext)

    (false, "") extensions in

  if ok_ext then

    let dirname = Filename.dirname filename in

    let basename = Filename.chop_suffix (Filename.basename filename) ext in

    verify dirname basename ext

  else

    raise (Arg.Bad ("Can only compile *.lusi, *.lus or *.ec files"))

let _ =

  Global.initialize ();

  Corelang.add_internal_funs ();

  try

    Printexc.record_backtrace true;

    let options = Options_management.lustrev_options @ (Verifiers.options ()) in

    Arg.parse options anonymous usage

  with

  | Parse.Error _

  | Types.Error (_,_) | Clocks.Error (_,_) -> exit 1

  | Corelang.Error (_ (* loc *), kind) (*| Task_set.Error _*) -> exit (Error.return_code kind)

  (* | Causality.Error _  -> exit (Error.return_code Error.AlgebraicLoop) *)

  | Sys_error msg -> (eprintf "Failure: %s@." msg); exit 1

  | exc -> (track_exception (); raise exc) 

(* Local Variables: *)

(* compile-command:"make -C .." *)

(* End: *)