CristalCaveGem » LustreC

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		       Version 2.1, February 1999

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That's all there is to it!

# OASIS_START

# DO NOT EDIT (digest: bc1e05bfc8b39b664f29dae8dbd3ebbb)

SETUP = ocaml setup.ml

build: setup.data

	$(SETUP) -build $(BUILDFLAGS)

doc: setup.data build

	$(SETUP) -doc $(DOCFLAGS)

test: setup.data build

	$(SETUP) -test $(TESTFLAGS)

all: 

	$(SETUP) -all $(ALLFLAGS)

install: setup.data

	$(SETUP) -install $(INSTALLFLAGS)

uninstall: setup.data

	$(SETUP) -uninstall $(UNINSTALLFLAGS)

reinstall: setup.data

	$(SETUP) -reinstall $(REINSTALLFLAGS)

clean: 

	$(SETUP) -clean $(CLEANFLAGS)

distclean: 

	$(SETUP) -distclean $(DISTCLEANFLAGS)

setup.data:

	$(SETUP) -configure $(CONFIGUREFLAGS)

.PHONY: build doc test all install uninstall reinstall clean distclean configure

# OASIS_STOP

To compile

# ./configure

# make

# make install

To use it

In a modular setting:

# lustrec <filename.lus>

will generate filename.c and filename.h

With a main node:

# lustrec -node <main_node> <filename.lus>

will generate the same two files, but filename.c will contains a main function

With a main node, with a static memory allocation scheme:

# lustrec -node <main_node> -static <filename.lus>

same as above, but main function will statically allocate memory

To compile it:

# gcc -Iinclude filename.c

where include links to the include folder

To run it with the generated main function:

- compile the io_frontend.o

# gcc -c include/io_frontend.c

# gcc -Iinclude -o target_name io_frontend.c filename.c

# ./target_name

To analyze it with frama-c

# frama-c -cpp-extra-args='-Iinclude'  filename.c

* TODO

** include files

** main function

*** add a clean test to forbid array arguments for main node

    (no available input/output methods)

** test suite

*** for complex dependency graphs (notably mem/mem cyclic dependencies)

*** for clocks

*** for arrays (non-generic nodes)

** compare with lus2c (verimag)

** extension

*** array access: done

*** add an option to dynamically check array accesses: done

*** power operator: done

*** automaton

*** annotations to ACSL

** init checking

*** to be done !!!

** normalization

*** sub-expression sharing seems to be not totally working: fixed

*** improve behavior for power and access operators:done

*** more type-directed normalization (notably to improve code gen for arrays): done

*** reuse of dead vars instead of systematically allocating new local vars

*** add a clean test for used but undefined nodes

** typing

*** correct typing of arith ops (real/int with subtyping ?)

*** display array dimensions with correct names: done

*** clocks must not be static inputs: done

** clock calculus

*** extension from named clocks to valued clocks ?

*** static inputs should be polymorphic, as global constants are: done

OASISFormat: 0.2

Name:        Lustre Compiler

Version:     1.2

Synopsis:    Lustre compiler C and Java backends

Authors:     

License:     LGPL-2.1

Plugins:     DevFiles (0.2)

# , Custom (0.2)

PreBuildCommand: ./svn_version.sh 

PostInstallCommand: mkdir -p /usr/local/include/lustrec; cp include/* /usr/local/include/lustrec/ 

Executable lustrec

  Path:       src

  BuildTools: ocamlbuild

  MainIs:     main_lustre_compiler.ml

  BuildDepends: ocamlgraph,str,unix 

  CompiledObject: native

Test nonregression

  Type: custom

  Command: make test-compile 

  WorkingDirectory: test

  Run: true

# OASIS_START

# DO NOT EDIT (digest: 54aa7498411485980381101fb69226dd)

# Executable lustrec

"src/main_lustre_compiler.native": pkg_unix

"src/main_lustre_compiler.native": pkg_str

"src/main_lustre_compiler.native": pkg_ocamlgraph

<src/*.ml{,i}>: pkg_unix

<src/*.ml{,i}>: pkg_str

<src/*.ml{,i}>: pkg_ocamlgraph

# OASIS_STOP

#!/bin/sh

# OASIS_START

# DO NOT EDIT (digest: ed33e59fe00e48bc31edf413bbc8b8d6)

set -e

ocaml setup.ml -configure $*

# OASIS_STOP

/*************************************************************************

 *  Compilation:  javac StdIn.java

 *  Execution:    java StdIn   (interactive test of basic functionality)

 *

 *  Reads in data of various types from standard input.

 *

 *************************************************************************/

import java.util.Scanner;

import java.util.regex.Pattern;

/**

 *  <i>Standard input</i>. This class provides methods for reading strings

 *  and numbers from standard input. See 

 *  <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of

 *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>

 *  by Robert Sedgewick and Kevin Wayne.

 *  <p>

 *  See the technical information in the documentation of the {@link In}

 *  class, which applies to this class as well. 

 */

public final class StdIn {

    // it doesn't make sense to instantiate this class

    private StdIn() {}

    private static Scanner scanner;

    /*** begin: section (1 of 2) of code duplicated from In to StdIn */

    // assume Unicode UTF-8 encoding

    private static final String charsetName = "UTF-8";

    // assume language = English, country = US for consistency with System.out.

    private static final java.util.Locale usLocale = 

        new java.util.Locale("en", "US");

    // the default token separator; we maintain the invariant that this value 

    // is held by the scanner's delimiter between calls

    private static final Pattern WHITESPACE_PATTERN

        = Pattern.compile("\\p{javaWhitespace}+");

    // makes whitespace characters significant 

    private static final Pattern EMPTY_PATTERN

        = Pattern.compile("");

    // used to read the entire input. source:

    // http://weblogs.java.net/blog/pat/archive/2004/10/stupid_scanner_1.html

    private static final Pattern EVERYTHING_PATTERN

        = Pattern.compile("\\A");

    /*** end: section (1 of 2) of code duplicated from In to StdIn */

    /*** begin: section (2 of 2) of code duplicated from In to StdIn,

      *  with all methods changed from "public" to "public static" ***/

   /**

     * Is the input empty (except possibly for whitespace)? Use this

     * to know whether the next call to {@link #readString()}, 

     * {@link #readDouble()}, etc will succeed.

     */

    public static boolean isEmpty() {

        return !scanner.hasNext();

    }

   /**

     * Does the input have a next line? Use this to know whether the

     * next call to {@link #readLine()} will succeed. <p> Functionally

     * equivalent to {@link #hasNextChar()}.

     */

    public static boolean hasNextLine() {

        return scanner.hasNextLine();

    }

    /**

     * Is the input empty (including whitespace)? Use this to know 

     * whether the next call to {@link #readChar()} will succeed. <p> Functionally

     * equivalent to {@link #hasNextLine()}.

     */

    public static boolean hasNextChar() {

        scanner.useDelimiter(EMPTY_PATTERN);

        boolean result = scanner.hasNext();

        scanner.useDelimiter(WHITESPACE_PATTERN);

        return result;

    }

   /**

     * Read and return the next line.

     */

    public static String readLine() {

        String line;

        try                 { line = scanner.nextLine(); }

        catch (Exception e) { line = null;               }

        return line;

    }

    /**

     * Read and return the next character.

     */

    public static char readChar() {

        scanner.useDelimiter(EMPTY_PATTERN);

        String ch = scanner.next();

        assert (ch.length() == 1) : "Internal (Std)In.readChar() error!"

            + " Please contact the authors.";

        scanner.useDelimiter(WHITESPACE_PATTERN);

        return ch.charAt(0);

    }  

   /**

     * Read and return the remainder of the input as a string.

     */

    public static String readAll() {

        if (!scanner.hasNextLine())

            return "";

        String result = scanner.useDelimiter(EVERYTHING_PATTERN).next();

        // not that important to reset delimeter, since now scanner is empty

        scanner.useDelimiter(WHITESPACE_PATTERN); // but let's do it anyway

        return result;

    }

   /**

     * Read and return the next string.

     */

    public static String readString() {

        return scanner.next();

    }

   /**

     * Read and return the next int.

     */

    public static int readInt() {

        return scanner.nextInt();

    }

   /**

     * Read and return the next double.

     */

    public static double readDouble() {

        return scanner.nextDouble();

    }

   /**

     * Read and return the next float.

     */

    public static float readFloat() {

        return scanner.nextFloat();

    }

   /**

     * Read and return the next long.

     */

    public static long readLong() {

        return scanner.nextLong();

    }

   /**

     * Read and return the next short.

     */

    public static short readShort() {

        return scanner.nextShort();

    }

   /**

     * Read and return the next byte.

     */

    public static byte readByte() {

        return scanner.nextByte();

    }

    /**

     * Read and return the next boolean, allowing case-insensitive

     * "true" or "1" for true, and "false" or "0" for false.

     */

    public static boolean readBoolean() {

        String s = readString();

        if (s.equalsIgnoreCase("true"))  return true;

        if (s.equalsIgnoreCase("false")) return false;

        if (s.equals("1"))               return true;

        if (s.equals("0"))               return false;

        throw new java.util.InputMismatchException();

    }

    /**

     * Read all strings until the end of input is reached, and return them.

     */

    public static String[] readAllStrings() {

        // we could use readAll.trim().split(), but that's not consistent

        // since trim() uses characters 0x00..0x20 as whitespace

        String[] tokens = WHITESPACE_PATTERN.split(readAll());

        if (tokens.length == 0 || tokens[0].length() > 0)

            return tokens;

        String[] decapitokens = new String[tokens.length-1];

        for (int i=0; i < tokens.length-1; i++)

            decapitokens[i] = tokens[i+1];

        return decapitokens;

    }

    /**

     * Read all ints until the end of input is reached, and return them.

     */

    public static int[] readAllInts() {

        String[] fields = readAllStrings();

        int[] vals = new int[fields.length];

        for (int i = 0; i < fields.length; i++)

            vals[i] = Integer.parseInt(fields[i]);

        return vals;

    }

    /**

     * Read all doubles until the end of input is reached, and return them.

     */

    public static double[] readAllDoubles() {

        String[] fields = readAllStrings();

        double[] vals = new double[fields.length];

        for (int i = 0; i < fields.length; i++)

            vals[i] = Double.parseDouble(fields[i]);

        return vals;

    }

    /*** end: section (2 of 2) of code duplicated from In to StdIn */

    /**

     * If StdIn changes, use this to reinitialize the scanner.

     */

    private static void resync() {

        setScanner(new Scanner(new java.io.BufferedInputStream(System.in), 

                               charsetName));

    }

    private static void setScanner(Scanner scanner) {

        StdIn.scanner = scanner;

        StdIn.scanner.useLocale(usLocale);

    }

    // do this once when StdIn is initialized

    static {

        resync();

    }

   /**

     * Reads all ints from stdin.

     * @deprecated For more consistency, use {@link #readAllInts()}

     */

    public static int[] readInts() {

        return readAllInts();

    }

   /**

     * Reads all doubles from stdin.

     * @deprecated For more consistency, use {@link #readAllDoubles()}

     */

    public static double[] readDoubles() {

        return readAllDoubles();

    }

   /**

     * Reads all Strings from stdin.

     * @deprecated For more consistency, use {@link #readAllStrings()}

     */

    public static String[] readStrings() {

        return readAllStrings();

    }

    /**

     * Interactive test of basic functionality.

     */

    public static void main(String[] args) {

        System.out.println("Type a string: ");

        String s = StdIn.readString();

        System.out.println("Your string was: " + s);

        System.out.println();

        System.out.println("Type an int: ");

        int a = StdIn.readInt();

        System.out.println("Your int was: " + a);

        System.out.println();

        System.out.println("Type a boolean: ");

        boolean b = StdIn.readBoolean();

        System.out.println("Your boolean was: " + b);

        System.out.println();

        System.out.println("Type a double: ");

        double c = StdIn.readDouble();

        System.out.println("Your double was: " + c);

        System.out.println();

    }

}

#include <stdlib.h> /* Provides exit */

#include <stdio.h> /* Provides printf, scanf, sscanf */

#include <unistd.h> /* Provides isatty */

#include "io_frontend.h"

int ISATTY;

/* Standard Input procedures **************/

_Bool _get_bool(char* n){

   char b[512];

   _Bool r = 0;

   int s = 1;

   char c;

   do {

      if(ISATTY) {

         if((s != 1)||(r == -1)) printf("\a");

         printf("%s (1,t,T/0,f,F) ? ", n);

      }

      if(scanf("%s", b)==EOF) exit(0);

      s = sscanf(b, "%c", &c);

      r = -1;

      if((c == '0') || (c == 'f') || (c == 'F')) r = 0;

      if((c == '1') || (c == 't') || (c == 'T')) r = 1;

   } while((s != 1) || (r == -1));

   return r;

}

int _get_int(char* n){

   char b[512];

   int r;

   int s = 1;

   do {

      if(ISATTY) {

         if(s != 1) printf("\a");

         printf("%s (integer) ? ", n);

      }

      if(scanf("%s", b)==EOF) exit(0);

      s = sscanf(b, "%d", &r);

   } while(s != 1);

   return r;

}

double _get_double(char* n){

   char b[512];

   double r;

   int s = 1;

   do {

      if(ISATTY) {

         if(s != 1) printf("\a");

         printf("%s (double) ? ", n);

      }

      if(scanf("%s", b)==EOF) exit(0);

      s = sscanf(b, "%lf", &r);

   } while(s != 1);

   return r;

}

/* Standard Output procedures **************/

void _put_bool(char* n, _Bool _V){

  if(ISATTY) {

    printf("%s = ", n);

  } else {

    printf("'%s': ", n);

  };

  printf("'%i' ", (_V)? 1 : 0);

  printf("\n");

}

void _put_int(char* n, int _V){

  if(ISATTY) {

    printf("%s = ", n);

  } else {

    printf("'%s': ", n);

  };

  printf("'%d' ", _V);

  printf("\n");

}

void _put_double(char* n, double _V){

  if(ISATTY) {

    printf("%s = ", n);

  } else {

    printf("'%s': ", n);

  };

  printf("'%f' ", _V);

  printf("\n");

}

#ifndef _IO_FRONTEND

#define _IO_FRONTEND

/* Print a promt ? ************************/

extern int ISATTY;

/* Standard Input procedures **************/

/*@ assigns *n; */

extern _Bool _get_bool(char* n);

/*@ assigns *n; */

extern int _get_int(char* n);

/*@ assigns *n; */

extern double _get_double(char* n);

/* Standard Output procedures **************/

/*@ assigns \nothing; */

extern void _put_bool(char* n, _Bool _V);

/*@ assigns \nothing; */

extern void _put_int(char* n, int _V);

/*@ assigns \nothing; */

extern void _put_double(char* n, double _V);

#endif

(* OASIS_START *)

(* DO NOT EDIT (digest: 7eabc0106cad87d67c960d9a2ff80b28) *)

module OASISGettext = struct

# 21 "/build/buildd/oasis-0.2.0/src/oasis/OASISGettext.ml"

  let ns_ str = 

    str

  let s_ str = 

    str

  let f_ (str : ('a, 'b, 'c, 'd) format4) =

    str

  let fn_ fmt1 fmt2 n =

    if n = 1 then

      fmt1^^""

    else

      fmt2^^""

  let init = 

    []

end

module OASISExpr = struct

# 21 "/build/buildd/oasis-0.2.0/src/oasis/OASISExpr.ml"

  open OASISGettext

  type test = string 

  type flag = string 

  type t =

    | EBool of bool

    | ENot of t

    | EAnd of t * t

    | EOr of t * t

    | EFlag of flag

    | ETest of test * string

  type 'a choices = (t * 'a) list 

  let eval var_get t =

    let rec eval' = 

      function

        | EBool b ->

            b

        | ENot e -> 

            not (eval' e)

        | EAnd (e1, e2) ->

            (eval' e1) && (eval' e2)

        | EOr (e1, e2) -> 

            (eval' e1) || (eval' e2)

        | EFlag nm ->

            let v =

              var_get nm

            in

              assert(v = "true" || v = "false");

              (v = "true")

        | ETest (nm, vl) ->

            let v =

              var_get nm

            in

              (v = vl)

    in

      eval' t

  let choose ?printer ?name var_get lst =

    let rec choose_aux = 

      function

        | (cond, vl) :: tl ->

            if eval var_get cond then 

              vl 

            else

              choose_aux tl

        | [] ->

            let str_lst = 

              if lst = [] then

                s_ "<empty>"

              else

                String.concat 

                  (s_ ", ")

                  (List.map

                     (fun (cond, vl) ->

                        match printer with

                          | Some p -> p vl

                          | None -> s_ "<no printer>")

                     lst)

            in

              match name with 

                | Some nm ->

                    failwith

                      (Printf.sprintf 

                         (f_ "No result for the choice list '%s': %s")

                         nm str_lst)

                | None ->

                    failwith

                      (Printf.sprintf

                         (f_ "No result for a choice list: %s")

                         str_lst)

    in

      choose_aux (List.rev lst)

end

module BaseEnvLight = struct

# 21 "/build/buildd/oasis-0.2.0/src/base/BaseEnvLight.ml"

  module MapString = Map.Make(String)

  type t = string MapString.t

  let default_filename =

    Filename.concat 

      (Sys.getcwd ())

      "setup.data"

  let load ?(allow_empty=false) ?(filename=default_filename) () =

    if Sys.file_exists filename then

      begin

        let chn =

          open_in_bin filename

        in

        let st =

          Stream.of_channel chn

        in

        let line =

          ref 1

        in

        let st_line = 

          Stream.from

            (fun _ ->

               try

                 match Stream.next st with 

                   | '\n' -> incr line; Some '\n'

                   | c -> Some c

               with Stream.Failure -> None)

        in

        let lexer = 

          Genlex.make_lexer ["="] st_line

        in

        let rec read_file mp =

          match Stream.npeek 3 lexer with 

            | [Genlex.Ident nm; Genlex.Kwd "="; Genlex.String value] ->

                Stream.junk lexer; 

                Stream.junk lexer; 

                Stream.junk lexer;

                read_file (MapString.add nm value mp)

            | [] ->

                mp

            | _ ->

                failwith

                  (Printf.sprintf

                     "Malformed data file '%s' line %d"

                     filename !line)

        in

        let mp =

          read_file MapString.empty

        in

          close_in chn;

          mp

      end

    else if allow_empty then

      begin

        MapString.empty

      end

    else

      begin

        failwith 

          (Printf.sprintf 

             "Unable to load environment, the file '%s' doesn't exist."

             filename)

      end

  let var_get name env =

    let rec var_expand str =

      let buff =

        Buffer.create ((String.length str) * 2)

      in

        Buffer.add_substitute 

          buff

          (fun var -> 

             try 

               var_expand (MapString.find var env)

             with Not_found ->

               failwith 

                 (Printf.sprintf 

                    "No variable %s defined when trying to expand %S."

                    var 

                    str))

          str;

        Buffer.contents buff

    in

      var_expand (MapString.find name env)

  let var_choose lst env = 

    OASISExpr.choose

      (fun nm -> var_get nm env)

      lst

end

module MyOCamlbuildFindlib = struct

# 21 "/build/buildd/oasis-0.2.0/src/plugins/ocamlbuild/MyOCamlbuildFindlib.ml"

  (** OCamlbuild extension, copied from 

    * http://brion.inria.fr/gallium/index.php/Using_ocamlfind_with_ocamlbuild

    * by N. Pouillard and others

    *

    * Updated on 2009/02/28

    *

    * Modified by Sylvain Le Gall 

    *)

  open Ocamlbuild_plugin

  (* these functions are not really officially exported *)

  let run_and_read = 

    Ocamlbuild_pack.My_unix.run_and_read

  let blank_sep_strings = 

    Ocamlbuild_pack.Lexers.blank_sep_strings

  let split s ch =

    let x = 

      ref [] 

    in

    let rec go s =

      let pos = 

        String.index s ch 

      in

        x := (String.before s pos)::!x;

        go (String.after s (pos + 1))

    in

      try

        go s

      with Not_found -> !x

  let split_nl s = split s '\n'

  let before_space s =

    try

      String.before s (String.index s ' ')

    with Not_found -> s

  (* this lists all supported packages *)

  let find_packages () =

    List.map before_space (split_nl & run_and_read "ocamlfind list")

  (* this is supposed to list available syntaxes, but I don't know how to do it. *)

  let find_syntaxes () = ["camlp4o"; "camlp4r"]

  (* ocamlfind command *)

  let ocamlfind x = S[A"ocamlfind"; x]

  let dispatch =

    function

      | Before_options ->

          (* by using Before_options one let command line options have an higher priority *)

          (* on the contrary using After_options will guarantee to have the higher priority *)

          (* override default commands by ocamlfind ones *)

          Options.ocamlc     := ocamlfind & A"ocamlc";

          Options.ocamlopt   := ocamlfind & A"ocamlopt";

          Options.ocamldep   := ocamlfind & A"ocamldep";

          Options.ocamldoc   := ocamlfind & A"ocamldoc";

          Options.ocamlmktop := ocamlfind & A"ocamlmktop"

      | After_rules ->

          (* When one link an OCaml library/binary/package, one should use -linkpkg *)

          flag ["ocaml"; "link"; "program"] & A"-linkpkg";

          (* For each ocamlfind package one inject the -package option when

           * compiling, computing dependencies, generating documentation and

           * linking. *)

          List.iter 

            begin fun pkg ->

              flag ["ocaml"; "compile";  "pkg_"^pkg] & S[A"-package"; A pkg];

              flag ["ocaml"; "ocamldep"; "pkg_"^pkg] & S[A"-package"; A pkg];

              flag ["ocaml"; "doc";      "pkg_"^pkg] & S[A"-package"; A pkg];

              flag ["ocaml"; "link";     "pkg_"^pkg] & S[A"-package"; A pkg];

              flag ["ocaml"; "infer_interface"; "pkg_"^pkg] & S[A"-package"; A pkg];

            end 

            (find_packages ());

          (* Like -package but for extensions syntax. Morover -syntax is useless

           * when linking. *)

          List.iter begin fun syntax ->

          flag ["ocaml"; "compile";  "syntax_"^syntax] & S[A"-syntax"; A syntax];

          flag ["ocaml"; "ocamldep"; "syntax_"^syntax] & S[A"-syntax"; A syntax];

          flag ["ocaml"; "doc";      "syntax_"^syntax] & S[A"-syntax"; A syntax];

          flag ["ocaml"; "infer_interface"; "syntax_"^syntax] & S[A"-syntax"; A syntax];

          end (find_syntaxes ());

          (* The default "thread" tag is not compatible with ocamlfind.

           * Indeed, the default rules add the "threads.cma" or "threads.cmxa"

           * options when using this tag. When using the "-linkpkg" option with

           * ocamlfind, this module will then be added twice on the command line.

           *                        

           * To solve this, one approach is to add the "-thread" option when using

           * the "threads" package using the previous plugin.

           *)

          flag ["ocaml"; "pkg_threads"; "compile"] (S[A "-thread"]);

          flag ["ocaml"; "pkg_threads"; "link"] (S[A "-thread"]);

          flag ["ocaml"; "pkg_threads"; "infer_interface"] (S[A "-thread"])

      | _ -> 

          ()

end

module MyOCamlbuildBase = struct

# 21 "/build/buildd/oasis-0.2.0/src/plugins/ocamlbuild/MyOCamlbuildBase.ml"

  (** Base functions for writing myocamlbuild.ml

      @author Sylvain Le Gall

    *)

  open Ocamlbuild_plugin

  type dir = string 

  type file = string 

  type name = string 

  type tag = string 

# 55 "/build/buildd/oasis-0.2.0/src/plugins/ocamlbuild/MyOCamlbuildBase.ml"

  type t =

      {

        lib_ocaml: (name * dir list) list;

        lib_c:     (name * dir * file list) list; 

        flags:     (tag list * (spec OASISExpr.choices)) list;

      } 

  let env_filename =

    Pathname.basename 

      BaseEnvLight.default_filename

  let dispatch_combine lst =

    fun e ->

      List.iter 

        (fun dispatch -> dispatch e)

        lst 

  let dispatch t e = 

    let env = 

      BaseEnvLight.load 

        ~filename:env_filename 

        ~allow_empty:true

        ()

    in

      match e with 

        | Before_options ->

            let no_trailing_dot s =

              if String.length s >= 1 && s.[0] = '.' then

                String.sub s 1 ((String.length s) - 1)

              else

                s

            in

              List.iter

                (fun (opt, var) ->

                   try 

                     opt := no_trailing_dot (BaseEnvLight.var_get var env)

                   with Not_found ->

                     Printf.eprintf "W: Cannot get variable %s" var)