    
  * 
  * Copyright ( C ) 2010 , 2013 Facebook 
  * 
  * This library is free software ; you can redistribute it and/or 
  * modify it under the terms of the GNU Lesser General Public License 
  * version 2.1 as published by the Free Software Foundation , with the 
  * special exception on linking described in file license.txt . 
  * 
  * This library is distributed in the hope that it will be useful , but 
  * WITHOUT ANY WARRANTY ; without even the implied warranty of 
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE .   See the file 
  * license.txt for more details . 
 
 *
 * Copyright (C) 2010, 2013 Facebook
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * version 2.1 as published by the Free Software Foundation, with the
 * special exception on linking described in file license.txt.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the file
 * license.txt for more details.
 *)
open Common
module V = Visitor_js
module FT = File_type

(*****************************************************************************)
(* Filemames *)
(*****************************************************************************)

  copy paste of php code , not sure this is relevant for Javascript
let is_js_script file =
  Common.with_open_infile file (fun chan ->
      try
        let l = input_line chan in
        l =~ "#!/usr/.*/js" || l =~ "#!/bin/env js" || l =~ "#!/usr/bin/env js"
      with
      | End_of_file -> false)

let find_source_files_of_dir_or_files ?(include_scripts = true) xs =
  Common.files_of_dir_or_files_no_vcs_nofilter xs
  |> List.filter (fun filename ->
         match FT.file_type_of_file filename with
         (* less: could also consider Typescript files *)
         | FT.PL (FT.Web FT.Js) -> true
         | _ -> if include_scripts then is_js_script filename else false)
  |> Common.sort

(*****************************************************************************)
(* Extract infos *)
(*****************************************************************************)

let extract_info_visitor recursor =
  let globals = ref [] in
  let hooks =
    {
      V.default_visitor with
      V.kinfo = (fun (_k, _) i -> Common.push i globals);
    }
  in
  let vout = V.mk_visitor hooks in
  recursor vout;
  List.rev !globals

let ii_of_any any = extract_info_visitor (fun visitor -> visitor any)

***************************************************************************
 Filemames 
***************************************************************************
 less: could also consider Typescript files 
***************************************************************************
 Extract infos 
***************************************************************************
    
  * 
  * Copyright ( C ) 2010 , 2013 Facebook 
  * 
  * This library is free software ; you can redistribute it and/or 
  * modify it under the terms of the GNU Lesser General Public License 
  * version 2.1 as published by the Free Software Foundation , with the 
  * special exception on linking described in file license.txt . 
  * 
  * This library is distributed in the hope that it will be useful , but 
  * WITHOUT ANY WARRANTY ; without even the implied warranty of 
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE .   See the file 
  * license.txt for more details . 
 
 *
 * Copyright (C) 2010, 2013 Facebook
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * version 2.1 as published by the Free Software Foundation, with the
 * special exception on linking described in file license.txt.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the file
 * license.txt for more details.
 *)
open Common
module V = Visitor_js
module FT = File_type


  copy paste of php code , not sure this is relevant for Javascript
let is_js_script file =
  Common.with_open_infile file (fun chan ->
      try
        let l = input_line chan in
        l =~ "#!/usr/.*/js" || l =~ "#!/bin/env js" || l =~ "#!/usr/bin/env js"
      with
      | End_of_file -> false)

let find_source_files_of_dir_or_files ?(include_scripts = true) xs =
  Common.files_of_dir_or_files_no_vcs_nofilter xs
  |> List.filter (fun filename ->
         match FT.file_type_of_file filename with
         | FT.PL (FT.Web FT.Js) -> true
         | _ -> if include_scripts then is_js_script filename else false)
  |> Common.sort


let extract_info_visitor recursor =
  let globals = ref [] in
  let hooks =
    {
      V.default_visitor with
      V.kinfo = (fun (_k, _) i -> Common.push i globals);
    }
  in
  let vout = V.mk_visitor hooks in
  recursor vout;
  List.rev !globals

let ii_of_any any = extract_info_visitor (fun visitor -> visitor any)
