myocamlbuild.ml

(* OASIS_START *)
(* DO NOT EDIT (digest: cdb7cc314374c549edf8d5b82d9b7b66) *)
module OASISGettext = struct
(* # 22 "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 OASISString = struct
(* # 22 "src/oasis/OASISString.ml" *)


  (** Various string utilities.

      Mostly inspired by extlib and batteries ExtString and BatString libraries.

      @author Sylvain Le Gall
  *)


  let nsplitf str f =
    if str = "" then
      []
    else
      let buf = Buffer.create 13 in
      let lst = ref [] in
      let push () =
        lst := Buffer.contents buf :: !lst;
        Buffer.clear buf
      in
      let str_len = String.length str in
      for i = 0 to str_len - 1 do
        if f str.[i] then
          push ()
        else
          Buffer.add_char buf str.[i]
      done;
      push ();
      List.rev !lst


  (** [nsplit c s] Split the string [s] at char [c]. It doesn't include the
      separator.
  *)
  let nsplit str c =
    nsplitf str ((=) c)


  let find ~what ?(offset=0) str =
    let what_idx = ref 0 in
    let str_idx = ref offset in
    while !str_idx < String.length str &&
          !what_idx < String.length what do
      if str.[!str_idx] = what.[!what_idx] then
        incr what_idx
      else
        what_idx := 0;
      incr str_idx
    done;
    if !what_idx <> String.length what then
      raise Not_found
    else
      !str_idx - !what_idx


  let sub_start str len =
    let str_len = String.length str in
    if len >= str_len then
      ""
    else
      String.sub str len (str_len - len)


  let sub_end ?(offset=0) str len =
    let str_len = String.length str in
    if len >= str_len then
      ""
    else
      String.sub str 0 (str_len - len)


  let starts_with ~what ?(offset=0) str =
    let what_idx = ref 0 in
    let str_idx = ref offset in
    let ok = ref true in
    while !ok &&
          !str_idx < String.length str &&
          !what_idx < String.length what do
      if str.[!str_idx] = what.[!what_idx] then
        incr what_idx
      else
        ok := false;
      incr str_idx
    done;
    !what_idx = String.length what


  let strip_starts_with ~what str =
    if starts_with ~what str then
      sub_start str (String.length what)
    else
      raise Not_found


  let ends_with ~what ?(offset=0) str =
    let what_idx = ref ((String.length what) - 1) in
    let str_idx = ref ((String.length str) - 1) in
    let ok = ref true in
    while !ok &&
          offset <= !str_idx &&
          0 <= !what_idx do
      if str.[!str_idx] = what.[!what_idx] then
        decr what_idx
      else
        ok := false;
      decr str_idx
    done;
    !what_idx = -1


  let strip_ends_with ~what str =
    if ends_with ~what str then
      sub_end str (String.length what)
    else
      raise Not_found


  let replace_chars f s =
    let buf = Buffer.create (String.length s) in
    String.iter (fun c -> Buffer.add_char buf (f c)) s;
    Buffer.contents buf

  let lowercase_ascii =
    replace_chars
      (fun c ->
         if (c >= 'A' && c <= 'Z') then
           Char.chr (Char.code c + 32)
         else
           c)

  let uncapitalize_ascii s =
    if s <> "" then
      (lowercase_ascii (String.sub s 0 1)) ^ (String.sub s 1 ((String.length s) - 1))
    else
      s

  let uppercase_ascii =
    replace_chars
      (fun c ->
         if (c >= 'a' && c <= 'z') then
           Char.chr (Char.code c - 32)
         else
           c)

  let capitalize_ascii s =
    if s <> "" then
      (uppercase_ascii (String.sub s 0 1)) ^ (String.sub s 1 ((String.length s) - 1))
    else
      s

end

module OASISUtils = struct
(* # 22 "src/oasis/OASISUtils.ml" *)


  open OASISGettext


  module MapExt =
  struct
    module type S =
    sig
      include Map.S
      val add_list: 'a t -> (key * 'a) list -> 'a t
      val of_list: (key * 'a) list -> 'a t
      val to_list: 'a t -> (key * 'a) list
    end

    module Make (Ord: Map.OrderedType) =
    struct
      include Map.Make(Ord)

      let rec add_list t =
        function
          | (k, v) :: tl -> add_list (add k v t) tl
          | [] -> t

      let of_list lst = add_list empty lst

      let to_list t = fold (fun k v acc -> (k, v) :: acc) t []
    end
  end


  module MapString = MapExt.Make(String)


  module SetExt  =
  struct
    module type S =
    sig
      include Set.S
      val add_list: t -> elt list -> t
      val of_list: elt list -> t
      val to_list: t -> elt list
    end

    module Make (Ord: Set.OrderedType) =
    struct
      include Set.Make(Ord)

      let rec add_list t =
        function
          | e :: tl -> add_list (add e t) tl
          | [] -> t

      let of_list lst = add_list empty lst

      let to_list = elements
    end
  end


  module SetString = SetExt.Make(String)


  let compare_csl s1 s2 =
    String.compare (OASISString.lowercase_ascii s1) (OASISString.lowercase_ascii s2)


  module HashStringCsl =
    Hashtbl.Make
      (struct
         type t = string
         let equal s1 s2 = (compare_csl s1 s2) = 0
         let hash s = Hashtbl.hash (OASISString.lowercase_ascii s)
       end)

  module SetStringCsl =
    SetExt.Make
      (struct
         type t = string
         let compare = compare_csl
       end)


  let varname_of_string ?(hyphen='_') s =
    if String.length s = 0 then
      begin
        invalid_arg "varname_of_string"
      end
    else
      begin
        let buf =
          OASISString.replace_chars
            (fun c ->
               if ('a' <= c && c <= 'z')
                 ||
                  ('A' <= c && c <= 'Z')
                 ||
                  ('0' <= c && c <= '9') then
                 c
               else
                 hyphen)
            s;
        in
        let buf =
          (* Start with a _ if digit *)
          if '0' <= s.[0] && s.[0] <= '9' then
            "_"^buf
          else
            buf
        in
          OASISString.lowercase_ascii buf
      end


  let varname_concat ?(hyphen='_') p s =
    let what = String.make 1 hyphen in
    let p =
      try
        OASISString.strip_ends_with ~what p
      with Not_found ->
        p
    in
    let s =
      try
        OASISString.strip_starts_with ~what s
      with Not_found ->
        s
    in
      p^what^s


  let is_varname str =
    str = varname_of_string str


  let failwithf fmt = Printf.ksprintf failwith fmt


  let rec file_location ?pos1 ?pos2 ?lexbuf () =
      match pos1, pos2, lexbuf with
      | Some p, None, _ | None, Some p, _ ->
        file_location ~pos1:p ~pos2:p ?lexbuf ()
      | Some p1, Some p2, _ ->
        let open Lexing in
        let fn, lineno = p1.pos_fname, p1.pos_lnum in
        let c1 = p1.pos_cnum - p1.pos_bol in
        let c2 = c1 + (p2.pos_cnum - p1.pos_cnum) in
        Printf.sprintf (f_ "file %S, line %d, characters %d-%d")  fn lineno c1 c2
      | _, _, Some lexbuf ->
        file_location
          ~pos1:(Lexing.lexeme_start_p lexbuf)
          ~pos2:(Lexing.lexeme_end_p lexbuf)
          ()
      | None, None, None ->
        s_ "<position undefined>"


  let failwithpf ?pos1 ?pos2 ?lexbuf fmt =
    let loc = file_location ?pos1 ?pos2 ?lexbuf () in
    Printf.ksprintf (fun s -> failwith (Printf.sprintf "%s: %s" loc s)) fmt


end

module OASISExpr = struct
(* # 22 "src/oasis/OASISExpr.ml" *)


  open OASISGettext
  open OASISUtils


  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


# 437 "myocamlbuild.ml"
module BaseEnvLight = struct
(* # 22 "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) ?stream () =
    let line = ref 1 in
    let lexer st =
      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
      Genlex.make_lexer ["="] st_line
    in
    let rec read_file lxr mp =
      match Stream.npeek 3 lxr with
      | [Genlex.Ident nm; Genlex.Kwd "="; Genlex.String value] ->
        Stream.junk lxr; Stream.junk lxr; Stream.junk lxr;
        read_file lxr (MapString.add nm value mp)
      | [] -> mp
      | _ ->
        failwith
          (Printf.sprintf "Malformed data file '%s' line %d" filename !line)
    in
    match stream with
    | Some st -> read_file (lexer st) MapString.empty
    | None ->
      if Sys.file_exists filename then begin
        let chn = open_in_bin filename in
        let st = Stream.of_channel chn in
        try
          let mp = read_file (lexer st) MapString.empty in
          close_in chn; mp
        with e ->
          close_in chn; raise e
      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 rec var_expand str env =
    let buff = Buffer.create ((String.length str) * 2) in
    Buffer.add_substitute
      buff
      (fun var ->
         try
           var_expand (MapString.find var env) env
         with Not_found ->
           failwith
             (Printf.sprintf
                "No variable %s defined when trying to expand %S."
                var
                str))
      str;
    Buffer.contents buff


  let var_get name env = var_expand (MapString.find name env) env
  let var_choose lst env = OASISExpr.choose (fun nm -> var_get nm env) lst
end


# 517 "myocamlbuild.ml"
module MyOCamlbuildFindlib = struct
(* # 22 "src/plugins/ocamlbuild/MyOCamlbuildFindlib.ml" *)


  (** OCamlbuild extension, copied from
    * https://ocaml.org/learn/tutorials/ocamlbuild/Using_ocamlfind_with_ocamlbuild.html
    * by N. Pouillard and others
    *
    * Updated on 2016-06-02
    *
    * Modified by Sylvain Le Gall
  *)
  open Ocamlbuild_plugin


  type conf = {no_automatic_syntax: bool}


  let run_and_read = Ocamlbuild_pack.My_unix.run_and_read


  let blank_sep_strings = Ocamlbuild_pack.Lexers.blank_sep_strings


  let exec_from_conf exec =
    let exec =
      let env = BaseEnvLight.load ~allow_empty:true () in
      try
        BaseEnvLight.var_get exec env
      with Not_found ->
        Printf.eprintf "W: Cannot get variable %s\n" exec;
        exec
    in
    let fix_win32 str =
      if Sys.os_type = "Win32" then begin
        let buff = Buffer.create (String.length str) in
        (* Adapt for windowsi, ocamlbuild + win32 has a hard time to handle '\\'.
        *)
        String.iter
          (fun c -> Buffer.add_char buff (if c = '\\' then '/' else c))
          str;
        Buffer.contents buff
      end else begin
        str
      end
    in
    fix_win32 exec


  let split s ch =
    let buf = Buffer.create 13 in
    let x = ref [] in
    let flush () =
      x := (Buffer.contents buf) :: !x;
      Buffer.clear buf
    in
    String.iter
      (fun c ->
         if c = ch then
           flush ()
         else
           Buffer.add_char buf c)
      s;
    flush ();
    List.rev !x


  let split_nl s = split s '\n'


  let before_space s =
    try
      String.before s (String.index s ' ')
    with Not_found -> s

  (* ocamlfind command *)
  let ocamlfind x = S[Sh (exec_from_conf "ocamlfind"); x]

  (* This lists all supported packages. *)
  let find_packages () =
    List.map before_space (split_nl & run_and_read (exec_from_conf "ocamlfind" ^ " list"))


  (* Mock to list available syntaxes. *)
  let find_syntaxes () = ["camlp4o"; "camlp4r"]


  let well_known_syntax = [
    "camlp4.quotations.o";
    "camlp4.quotations.r";
    "camlp4.exceptiontracer";
    "camlp4.extend";
    "camlp4.foldgenerator";
    "camlp4.listcomprehension";
    "camlp4.locationstripper";
    "camlp4.macro";
    "camlp4.mapgenerator";
    "camlp4.metagenerator";
    "camlp4.profiler";
    "camlp4.tracer"
  ]


  let dispatch conf =
    function
      | After_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";
        Options.ocamlmklib := ocamlfind & A"ocamlmklib"

      | After_rules ->

        (* Avoid warnings for unused tag *)
        flag ["tests"] N;

        (* 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 ->
            let base_args = [A"-package"; A pkg] in
            (* TODO: consider how to really choose camlp4o or camlp4r. *)
            let syn_args = [A"-syntax"; A "camlp4o"] in
            let (args, pargs) =
              (* Heuristic to identify syntax extensions: whether they end in
                 ".syntax"; some might not.
              *)
              if not (conf.no_automatic_syntax) &&
                 (Filename.check_suffix pkg "syntax" ||
                  List.mem pkg well_known_syntax) then
                (syn_args @ base_args, syn_args)
              else
                (base_args, [])
            in
            flag ["ocaml"; "compile";  "pkg_"^pkg] & S args;
            flag ["ocaml"; "ocamldep"; "pkg_"^pkg] & S args;
            flag ["ocaml"; "doc";      "pkg_"^pkg] & S args;
            flag ["ocaml"; "link";     "pkg_"^pkg] & S base_args;
            flag ["ocaml"; "infer_interface"; "pkg_"^pkg] & S args;

            (* TODO: Check if this is allowed for OCaml < 3.12.1 *)
            flag ["ocaml"; "compile";  "package("^pkg^")"] & S pargs;
            flag ["ocaml"; "ocamldep"; "package("^pkg^")"] & S pargs;
            flag ["ocaml"; "doc";      "package("^pkg^")"] & S pargs;
            flag ["ocaml"; "infer_interface"; "package("^pkg^")"] & S pargs;
          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"; "doc"] (S[A "-I"; A "+threads"]);
        flag ["ocaml"; "pkg_threads"; "link"] (S[A "-thread"]);
        flag ["ocaml"; "pkg_threads"; "infer_interface"] (S[A "-thread"]);
        flag ["c"; "pkg_threads"; "compile"] (S[A "-thread"]);
        flag ["ocaml"; "package(threads)"; "compile"] (S[A "-thread"]);
        flag ["ocaml"; "package(threads)"; "doc"] (S[A "-I"; A "+threads"]);
        flag ["ocaml"; "package(threads)"; "link"] (S[A "-thread"]);
        flag ["ocaml"; "package(threads)"; "infer_interface"] (S[A "-thread"]);
        flag ["c"; "package(threads)"; "compile"] (S[A "-thread"]);

      | _ ->
        ()
end

module MyOCamlbuildBase = struct
(* # 22 "src/plugins/ocamlbuild/MyOCamlbuildBase.ml" *)


  (** Base functions for writing myocamlbuild.ml
      @author Sylvain Le Gall
    *)


  open Ocamlbuild_plugin
  module OC = Ocamlbuild_pack.Ocaml_compiler


  type dir = string
  type file = string
  type name = string
  type tag = string


  type t =
      {
        lib_ocaml: (name * dir list * string list) list;
        lib_c:     (name * dir * file list) list;
        flags:     (tag list * (spec OASISExpr.choices)) list;
        (* Replace the 'dir: include' from _tags by a precise interdepends in
         * directory.
         *)
        includes:  (dir * dir list) list;
      }


(* # 110 "src/plugins/ocamlbuild/MyOCamlbuildBase.ml" *)


  let env_filename = Pathname.basename BaseEnvLight.default_filename


  let dispatch_combine lst =
    fun e ->
      List.iter
        (fun dispatch -> dispatch e)
        lst


  let tag_libstubs nm =
    "use_lib"^nm^"_stubs"


  let nm_libstubs nm =
    nm^"_stubs"


  let dispatch t e =
    let env = BaseEnvLight.load ~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\n" var)
                [
                  Options.ext_obj, "ext_obj";
                  Options.ext_lib, "ext_lib";
                  Options.ext_dll, "ext_dll";
                ]

        | After_rules ->
            (* Declare OCaml libraries *)
            List.iter
              (function
                 | nm, [], intf_modules ->
                     ocaml_lib nm;
                     let cmis =
                       List.map (fun m -> (OASISString.uncapitalize_ascii m) ^ ".cmi")
                                intf_modules in
                     dep ["ocaml"; "link"; "library"; "file:"^nm^".cma"] cmis
                 | nm, dir :: tl, intf_modules ->
                     ocaml_lib ~dir:dir (dir^"/"^nm);
                     List.iter
                       (fun dir ->
                          List.iter
                            (fun str ->
                               flag ["ocaml"; "use_"^nm; str] (S[A"-I"; P dir]))
                            ["compile"; "infer_interface"; "doc"])
                       tl;
                     let cmis =
                       List.map (fun m -> dir^"/"^(OASISString.uncapitalize_ascii m)^".cmi")
                                intf_modules in
                     dep ["ocaml"; "link"; "library"; "file:"^dir^"/"^nm^".cma"]
                         cmis)
              t.lib_ocaml;

            (* Declare directories dependencies, replace "include" in _tags. *)
            List.iter
              (fun (dir, include_dirs) ->
                 Pathname.define_context dir include_dirs)
              t.includes;

            (* Declare C libraries *)
            List.iter
              (fun (lib, dir, headers) ->
                   (* Handle C part of library *)
                   flag ["link"; "library"; "ocaml"; "byte"; tag_libstubs lib]
                     (S[A"-dllib"; A("-l"^(nm_libstubs lib)); A"-cclib";
                        A("-l"^(nm_libstubs lib))]);

                   flag ["link"; "library"; "ocaml"; "native"; tag_libstubs lib]
                     (S[A"-cclib"; A("-l"^(nm_libstubs lib))]);

                   if bool_of_string (BaseEnvLight.var_get "native_dynlink" env) then
                     flag ["link"; "program"; "ocaml"; "byte"; tag_libstubs lib]
                         (S[A"-dllib"; A("dll"^(nm_libstubs lib))]);

                   (* When ocaml link something that use the C library, then one
                      need that file to be up to date.
                      This holds both for programs and for libraries.
                    *)
                   dep ["link"; "ocaml"; tag_libstubs lib]
                     [dir/"lib"^(nm_libstubs lib)^"."^(!Options.ext_lib)];

                   dep  ["compile"; "ocaml"; tag_libstubs lib]
                     [dir/"lib"^(nm_libstubs lib)^"."^(!Options.ext_lib)];

                   (* TODO: be more specific about what depends on headers *)
                   (* Depends on .h files *)
                   dep ["compile"; "c"]
                     headers;

                   (* Setup search path for lib *)
                   flag ["link"; "ocaml"; "use_"^lib]
                     (S[A"-I"; P(dir)]);
              )
              t.lib_c;

              (* Add flags *)
              List.iter
              (fun (tags, cond_specs) ->
                 let spec = BaseEnvLight.var_choose cond_specs env in
                 let rec eval_specs =
                   function
                     | S lst -> S (List.map eval_specs lst)
                     | A str -> A (BaseEnvLight.var_expand str env)
                     | spec -> spec
                 in
                   flag tags & (eval_specs spec))
              t.flags
        | _ ->
            ()


  let dispatch_default conf t =
    dispatch_combine
      [
        dispatch t;
        MyOCamlbuildFindlib.dispatch conf;
      ]


end


# 878 "myocamlbuild.ml"
open Ocamlbuild_plugin;;
let package_default =
  {
     MyOCamlbuildBase.lib_ocaml = [("d3", ["lib"], [])];
     lib_c = [];
     flags = [];
     includes = [("examples", ["lib"])]
  }
  ;;

let conf = {MyOCamlbuildFindlib.no_automatic_syntax = false}

let dispatch_default = MyOCamlbuildBase.dispatch_default conf package_default;;

# 894 "myocamlbuild.ml"
(* OASIS_STOP *)
let examples = [
  "rectangle" ;
  "todo" ;
]

let () =
  Ocamlbuild_plugin.dispatch (fun hook ->
    dispatch_default hook;
    Ocamlbuild_js_of_ocaml.dispatcher
      ~oasis_executables:(List.map (fun x -> "examples/"^x^".byte") examples) hook
  )