tools/bridge.ml

   1 (*
   2  * Copyright 2010, INRIA, University of Copenhagen
   3  * Julia Lawall, Rene Rydhof Hansen, Gilles Muller, Nicolas Palix
   4  * Copyright 2005-2009, Ecole des Mines de Nantes, University of Copenhagen
   5  * Yoann Padioleau, Julia Lawall, Rene Rydhof Hansen, Henrik Stuart, Gilles Muller, Nicolas Palix
   6  * This file is part of Coccinelle.
   7  *
   8  * Coccinelle is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, according to version 2 of the License.
  11  *
  12  * Coccinelle is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Coccinelle.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  * The authors reserve the right to distribute this or future versions of
  21  * Coccinelle under other licenses.
  22  *)
  23
  24
  25 let drop_spaces s =
  26   String.concat "" (Str.split (Str.regexp "[ ]+") s)
  27
  28 let parse_line fp l n =
  29   if List.mem l fp
  30   then None
  31   else
  32     if Str.string_match (Str.regexp "#") l 0
  33     then None (* comment line *)
  34     else
  35       let top_split = Str.split (Str.regexp ":") l in
  36       match top_split with
  37         cocci::first::others ->
  38           let rec loop tag = function
  39               [x] ->
  40                 let x =
  41                   String.concat "\\ " (Str.split (Str.regexp "[ ]+") x) in
  42                 [(tag,x)]
  43             | first::rest ->
  44                 let splitted = Str.split (Str.regexp "[ ]+") first in
  45                 (match List.rev splitted with
  46                   new_tag::info ->
  47                     let rest = loop new_tag rest in
  48                     (tag,String.concat "\\ " (List.rev info))::rest
  49                 |       _ -> failwith "bad element")
  50             | _ -> failwith "no data" in
  51           Some (cocci,loop (drop_spaces first) others)
  52       | _ -> failwith (Printf.sprintf "bad line: %s" l)
  53
  54 let collect_lines fp i =
  55   let lines = ref [] in
  56   let ln = ref 0 in
  57   let rec loop _ =
  58     ln := !ln + 1;
  59     (match parse_line fp (input_line i) !ln with
  60       Some l ->
  61         if List.mem l !lines
  62         then ()
  63         else lines := l::!lines
  64     | None -> ());
  65     loop() in
  66   try loop() with End_of_file -> !lines
  67
  68 (* --------------------------------------------------------------------- *)
  69
  70 let process_fp fl =
  71   let i = open_in fl in
  72   let lines = ref ([] : string list) in
  73   let rec loop _ =
  74     let l = input_line i in
  75     (if not(Str.string_match (Str.regexp "#") l 0)
  76     then lines := l :: !lines);
  77     loop() in
  78   (try loop() with End_of_file -> ());
  79   close_in i;
  80   !lines
  81
  82 (* --------------------------------------------------------------------- *)
  83 (* same info, different categories *)
  84
  85 let discard_ambiguous lines =
  86   let rec loop = function
  87       [] -> []
  88     | (cocci,tags)::rest ->
  89         let (same,others) =
  90           List.partition
  91             (function (cocci2,tags2) -> tags = tags2 && not(cocci = cocci2))
  92             rest in
  93         match same with
  94           [] -> (cocci,tags)::loop rest
  95         | _ ->
  96             Printf.printf "ignoring ambiguity:\n";
  97             List.iter
  98               (function (cocci,tags) ->
  99                 Printf.printf "%s: %s\n" cocci
 100                   (String.concat ", "
 101                      (List.map
 102                         (function (tag,tagval) ->
 103                           Printf.sprintf "%s: %s" tag tagval)
 104                         tags)))
 105               ((cocci,tags)::same);
 106             loop others in
 107   loop lines
 108
 109 (* --------------------------------------------------------------------- *)
 110 (* only actually collects the rightmost element into ors *)
 111
 112 let split_or (cocci,line) =
 113   let rev = List.rev line in
 114   (cocci,List.rev(List.tl rev), List.hd rev)
 115
 116 let collect_ors fp lines =
 117   let rec loop = function
 118       [] -> failwith "no lines"
 119     | [line] ->
 120         let (c,k,v) = split_or line in
 121         ((c,k,[v]),[])
 122     | line::xs ->
 123         let (c,k,v) = split_or line in
 124         let ((c1,k1,v1),rest) = loop xs in
 125         if c = c1 && k = k1 && not (k = [])
 126         then
 127           if List.mem v v1
 128           then ((c1,k1,v1),rest)
 129           else ((c1,k1,v::v1),rest)
 130         else ((c,k,[v]),((c1,k1,v1)::rest)) in
 131   let ((c,k,v),rest) = loop lines in
 132   let res = (c,k,v)::rest in
 133   List.fold_left
 134     (function prev ->
 135       function (c,k,v) ->
 136         match v with
 137           [] -> failwith "not possible"
 138         | [x] -> (c,k@v) :: prev
 139         | (tag,_)::_ ->
 140             (*let vs =
 141               Printf.sprintf "%s:(%s)" tag
 142                 (String.concat "|"
 143                    (List.sort compare
 144                       (List.map (function (_,vl) -> vl) v))) in
 145             let attempt =
 146               Printf.sprintf "%s: %s %s" c
 147                 (String.concat " " (List.map (function (k,v) -> k^":"^v) k))
 148                 vs in*)
 149             if true (*List.mem attempt fp*)
 150             then
 151               let vs =
 152                 Printf.sprintf "\\\\\\\\\\(%s\\\\\\\\\\)"
 153                   (String.concat "\\\\\\\\\\|"
 154                      (List.sort compare
 155                         (List.map (function (_,vl) -> vl) v))) in
 156               (c,k@[(tag,vs)]) :: prev
 157             else (List.map (function vi -> (c,k@[vi])) v) @ prev)
 158     [] res
 159
 160 (* --------------------------------------------------------------------- *)
 161
 162 let command s =
 163   let _ = Sys.command s in
 164   ()
 165
 166 let created = ref ([] : (string * (string list ref * out_channel)) list)
 167
 168 let mktag n = Printf.sprintf "x%d" n
 169
 170 let created_files = ref ([] : (string * int ref) list)
 171
 172 let process_line env (cocci,tags) =
 173   let files = List.filter (function (c,f) -> c = cocci) env in
 174   List.iter
 175     (function (_,cocci_file) ->
 176       let resdir = Filename.chop_extension cocci_file in
 177       (if not(Sys.file_exists cocci_file)
 178       then failwith "no cocci file");
 179       let (n,o) =
 180         try List.assoc resdir !created
 181         with Not_found ->
 182           begin
 183             if Sys.file_exists resdir
 184             then
 185               command
 186                 (Printf.sprintf
 187                    "test %s -nt %s && /bin/rm -r -f %s && mkdir %s"
 188                    cocci_file resdir resdir resdir)
 189             else command (Printf.sprintf "mkdir %s" resdir);
 190             let files = Printf.sprintf "%s/files" resdir in
 191             let o = open_out files in
 192             Printf.fprintf o "all: real_all\n\n";
 193             let cell = ((ref []),o) in
 194             created := (resdir,cell) :: !created;
 195             cell
 196           end in
 197       let temp_file = Filename.temp_file cocci ".cocci" in
 198       command (Printf.sprintf "cp %s %s" cocci_file temp_file);
 199       let first_tag_val =
 200         match tags with
 201           [] -> failwith "no tags"
 202         | (_,first_tag_val)::_ ->
 203             let cell =
 204               try List.assoc first_tag_val !created_files
 205               with Not_found ->
 206                 let c = ref (-1) in
 207                 created_files := (first_tag_val,c)::!created_files;
 208                 c in
 209             cell := !cell + 1;
 210             if !cell = 0
 211             then first_tag_val
 212             else Printf.sprintf "%s%d" first_tag_val !cell in
 213       List.iter
 214         (function (tag,tagval) ->
 215           command
 216             (Printf.sprintf "sed s/%s/%s/ %s > %s_out; cp %s_out %s"
 217                tag tagval temp_file temp_file temp_file temp_file))
 218         tags;
 219       command
 220         (Printf.sprintf "mv %s %s/%s.cocci" temp_file resdir first_tag_val);
 221       Printf.fprintf o "%s.out:\n\tmono_spatch_linux %s.cocci ${ARGS}\n\n"
 222         first_tag_val first_tag_val;
 223       n := (first_tag_val^".out") :: !n)
 224     files
 225
 226 (* --------------------------------------------------------------------- *)
 227
 228 let rec mkenv = function
 229     [] -> []
 230   | [_] -> failwith "required arguments: file (category x cocci file)*"
 231   | category::cocci::rest ->
 232       if Filename.check_suffix cocci ".cocci"
 233       then (category,cocci)::mkenv rest
 234       else failwith "required arguments: file (category x cocci file)*"
 235
 236 let rec upto = function
 237     0 -> []
 238   | n -> (mktag (n-1)) :: (upto (n-1))
 239
 240 let _ =
 241   let (no_ors,args) =
 242     List.partition (function "-no_ors" -> true | _ -> false)
 243       (Array.to_list Sys.argv) in
 244   let (file,fp,env) =
 245     match List.tl args with
 246       file::env ->
 247         let rec loop prev = function
 248             [] ->
 249               if prev = ""
 250               then ([],[])
 251               else ([prev],[])
 252           | x::xs ->
 253               try
 254                 let _ = Str.search_forward (Str.regexp ".cocci") x 0 in
 255                 if prev = ""
 256                 then ([],x::xs)
 257                 else ([],prev::x::xs)
 258               with Not_found ->
 259                 let (fp,env) = loop x xs in
 260                 if prev = ""
 261                 then (fp,env)
 262                 else (prev::fp,env) in
 263         let (fp,env) = loop "" env in
 264         (file,fp,mkenv env)
 265     | _ -> failwith "one argument expected" in
 266   let fp = List.fold_left (@) [] (List.map process_fp fp) in
 267   let i = open_in file in
 268   let lines = collect_lines fp i in
 269   let lines = if no_ors = [] then collect_ors fp lines else lines in
 270   close_in i;
 271   let lines = discard_ambiguous lines in
 272   List.iter (process_line env) lines;
 273   List.iter
 274     (function (resdir,(n,o)) ->
 275       Printf.fprintf o "real_all: %s\n"
 276         (String.concat " " (List.rev !n));
 277       Printf.fprintf o "\tcat %s > completed\n"
 278         (String.concat " " (List.rev !n));
 279       close_out o)
 280     !created