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.                                                    *)

(*                                                                  *)

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

(* This module is used for the lustre test generator *)

open Format

open Log

open Utils

open LustreSpec

open Compiler_common

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

let extensions = [".lus"]

let pp_trace trace_filename mutation_list = 

  let trace_file = open_out trace_filename in

  let trace_fmt = formatter_of_out_channel trace_file in

  Format.fprintf trace_fmt "@[<v 2>{@ %a@ }@]"

    (fprintf_list

       ~sep:",@ "

       (fun fmt (mutation, mutation_loc, mutant_name) ->

	 Format.fprintf fmt "\"%s\": { @[<v 0>%a,@ %a@ }@]" 

	   mutant_name

	   Mutation.print_directive_json mutation

	   Mutation.print_loc_json mutation_loc

       ))

    mutation_list;

  Format.fprintf trace_fmt "@.@?" 

let testgen_source dirname basename extension =

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

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

  (* Parsing source *)

  let prog = parse_source source_name in

  let prog, dependencies = Compiler_stages.stage1 prog dirname basename in

  (* Two cases

     - generation of coverage conditions

     - generation of mutants: a number of mutated lustre files 

  *)

  if !Options.gen_mcdc then (

    PathConditions.mcdc prog;

    exit 0

  ) ;

  (* generate mutants *)

  let mutants = Mutation.mutate !Options.nb_mutants prog in

  (* Print generated mutants in target directory. *)

  let cpt = ref 0 in

  let mutation_list =

    List.map (fun (mutation, mutation_loc, mutant) ->

    (* Debugging code *)

    (* if List.mem !cpt [238;371;601;799;875;998] then *)

    (*   Format.eprintf "Mutant %i: %a -> %a" !cpt Printers.pp_expr orig_e Printers.pp_expr new_e  *)

    (* ; *)

      incr cpt;

      let mutant_basename = (Filename.basename basename)^ ".mutant.n" ^ (string_of_int !cpt) ^ extension  in

      let mutant_filename = 

	match !Options.dest_dir with

	| "" -> (* Mutants are generated in source directory *)

	   basename^ ".mutant.n" ^ (string_of_int !cpt) ^ extension 

      | dir ->  (* Mutants are generated in target directory *)

	 dir ^ "/" ^ mutant_basename 

    in

    let mutant_out = (

      try 

	open_out mutant_filename 

      with

	Sys_error _ -> Format.eprintf "Unable to open file %s for writing.@." mutant_filename; exit 1

    )

    in

    let mutant_fmt = formatter_of_out_channel mutant_out in

    report ~level:1 (fun fmt -> fprintf fmt ".. generating mutant %s: %a@,@?"

      mutant_filename

      Mutation.print_directive mutation

    );

    Format.fprintf mutant_fmt "%a@." Printers.pp_prog mutant;

    mutation, mutation_loc, mutant_basename

    )

      mutants

  in

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

  (* Printing traceability *)

  let trace_filename = 

    match !Options.dest_dir with

    | "" -> (* Mutant report is generated in source directory *)

       basename^ ".mutation.json" 

    | dir ->  (* Mutants are generated in target directory *)

       dir ^ "/" ^ (Filename.basename basename)^ ".mutation.json"

  in

  pp_trace trace_filename mutation_list;

  (* We stop the process here *)

  exit 0

let testgen dirname basename extension =

  match extension with

  | ".lus"   -> testgen_source dirname basename extension

  | _        -> assert false

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

    testgen dirname basename ext

  else

    raise (Arg.Bad ("Can only compile *.lus files"))

let _ =

  Global.initialize ();

  Corelang.add_internal_funs ();

  try

    Printexc.record_backtrace true;

    let options = Options_management.lustret_options

    in

    Arg.parse options anonymous usage

  with

  | Parse.Error _

  | Types.Error (_,_) | Clocks.Error (_,_)

  | Corelang.Error _ (*| Task_set.Error _*)

  | Causality.Error _ -> exit 1

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

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

(* Local Variables: *)

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

(* End: *)