aboutsummaryrefslogtreecommitdiffhomepage
path: root/tools/coqdep.ml
blob: ea5eb02c1250049fba66332c28157ebf3b904aeb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012     *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

open Printf
open Coqdep_lexer
open Coqdep_common

(** The basic parts of coqdep (i.e. the parts used by [coqdep -boot])
    are now in [Coqdep_common]. The code that remains here concerns
    the other options. Calling this complete coqdep with the [-boot]
    option should be equivalent to calling [coqdep_boot].
*)

let option_D = ref false
let option_w = ref false
let option_sort = ref false
let option_dump = ref None

let warning_mult suf iter =
  let tab = Hashtbl.create 151 in
  let check f d =
    begin try
      let d' = Hashtbl.find tab f in
      if (Filename.dirname (file_name f d))
        <> (Filename.dirname (file_name f d')) then begin
	  eprintf "*** Warning : the file %s is defined twice!\n" (f ^ suf);
	  flush stderr
	end
    with Not_found -> () end;
    Hashtbl.add tab f d
  in
  iter check

let add_coqlib_known phys_dir log_dir f =
  match get_extension f [".vo"] with
    | (basename,".vo") ->
        let name = log_dir@[basename] in
	let paths = suffixes name in
        List.iter (fun f -> Hashtbl.add coqlibKnown f ()) paths
    | _ -> ()

let sort () =
  let seen = Hashtbl.create 97 in
  let rec loop file =
    let file = canonize file in
    if not (Hashtbl.mem seen file) then begin
      Hashtbl.add seen file ();
      let cin = open_in (file ^ ".v") in
      let lb = Lexing.from_channel cin in
      try
	while true do
	  match coq_action lb with
	    | Require sl ->
		List.iter
		  (fun s ->
		    try loop (Hashtbl.find vKnown s)
		    with Not_found -> ())
		sl
	    | RequireString s -> loop s
	    | _ -> ()
	done
      with Fin_fichier ->
	close_in cin;
	printf "%s%s " file !suffixe
    end
  in
  List.iter (fun (name,_) -> loop name) !vAccu

let (dep_tab : (string,string list) Hashtbl.t) = Hashtbl.create 151

let mL_dep_list b f =
  try
    Hashtbl.find dep_tab f
  with Not_found ->
    let deja_vu = ref ([] : string list) in
    try
      let chan = open_in f in
      let buf = Lexing.from_channel chan in
      try
	while true do
	  let (Use_module str) = caml_action buf in
	  if str = b then begin
	    eprintf "*** Warning : in file %s the" f;
	    eprintf " notation %s. is useless !\n" b;
	    flush stderr
	  end else
            if not (List.mem str !deja_vu) then addQueue deja_vu str
      	done; []
      with Fin_fichier -> begin
	close_in chan;
	let rl = List.rev !deja_vu in
      	Hashtbl.add dep_tab f rl;
	rl
      end
    with Sys_error _ -> []

let affiche_Declare f dcl =
  printf "\n*** In file %s: \n" f;
  printf "Declare ML Module";
  List.iter (fun str -> printf " \"%s\"" str) dcl;
  printf ".\n";
  flush stdout

let warning_Declare f dcl =
  eprintf "*** Warning : in file %s, the ML modules" f;
  eprintf " declaration should be\n";
  eprintf "*** Declare ML Module";
  List.iter (fun str -> eprintf " \"%s\"" str) dcl;
  eprintf ".\n";
  flush stderr

let traite_Declare f =
  let decl_list = ref ([] : string list) in
  let rec treat = function
    | s :: ll ->
	let s' = basename_noext s in
	(match search_ml_known s with
	   | Some mldir when not (List.mem s' !decl_list) ->
	       let fullname = file_name s' mldir in
	       let depl = mL_dep_list s (fullname ^ ".ml") in
	       treat depl;
	       decl_list := s :: !decl_list
	   | _ -> ());
	treat ll
    | [] -> ()
  in
    try
      let chan = open_in f in
      let buf = Lexing.from_channel chan in
	begin try
	    while true do
      	      let tok = coq_action buf in
      		(match tok with
		  | Declare sl ->
		      decl_list := [];
		      treat sl;
		      decl_list := List.rev !decl_list;
		      if !option_D then
			affiche_Declare f !decl_list
		      else if !decl_list <> sl then
			warning_Declare f !decl_list
		  | _ -> ())
	    done
	  with Fin_fichier -> () end;
	close_in chan
    with Sys_error _ -> ()

let declare_dependencies () =
  List.iter
    (fun (name,_) ->
       traite_Declare (name^".v");
       flush stdout)
    (List.rev !vAccu)

(** DAGs guaranteed to be transitive reductions *)
module DAG (Node : Set.OrderedType) :
sig
  type node = Node.t
  type t
  val empty : t
  val add_transitive_edge : node -> node -> t -> t
  val iter : (node -> node -> unit) -> t -> unit
end =
struct
  type node = Node.t
  module NSet = Set.Make(Node)
  module NMap = Map.Make(Node)

  (** Associate to a node the set of its neighbours *)
  type _t = NSet.t NMap.t

  (** Optimisation: construct the reverse graph at the same time *)
  type t = { dir : _t; rev : _t; }


  let node_equal x y = Node.compare x y = 0

  let add_edge x y graph =
    let set = try NMap.find x graph with Not_found -> NSet.empty in
    NMap.add x (NSet.add y set) graph

  let remove_edge x y graph =
    let set = try NMap.find x graph with Not_found -> NSet.empty in
    let set = NSet.remove y set in
    if NSet.is_empty set then NMap.remove x graph
    else NMap.add x set graph

  let has_edge x y graph =
    let set = try NMap.find x graph with Not_found -> NSet.empty in
    NSet.mem y set

  let connected x y graph =
    let rec aux rem seen =
      if NSet.is_empty rem then false
      else
        let x = NSet.choose rem in
        if node_equal x y then true
        else
          let rem = NSet.remove x rem in
          if NSet.mem x seen then
            aux rem seen
          else
            let seen = NSet.add x seen in
            let next = try NMap.find x graph with Not_found -> NSet.empty in
            let rem = NSet.union next rem in
            aux rem seen
    in
    aux (NSet.singleton x) NSet.empty

  (** Check whether there is a path from a to b going through the edge
      x -> y. *)
  let connected_through a b x y graph =
    let rec aux rem seen =
      if NMap.is_empty rem then false
      else
        let (n, through) = NMap.choose rem in
        if node_equal n b && through then true
        else
          let rem = NMap.remove n rem in
          let is_seen = try Some (NMap.find n seen) with Not_found -> None in
          match is_seen with
          | None ->
            let seen = NMap.add n through seen in
            let next = try NMap.find n graph with Not_found -> NSet.empty in
            let is_x = node_equal n x in
            let push m accu =
              let through = through || (is_x && node_equal m y) in
              NMap.add m through accu
            in
            let rem = NSet.fold push next rem in
            aux rem seen
          | Some false ->
            (** The path we took encountered x -> y but not the one in seen *)
            if through then aux (NMap.add n true rem) (NMap.add n true seen)
            else aux rem seen
          | Some true -> aux rem seen
    in
    aux (NMap.singleton a false) NMap.empty

  let closure x graph =
    let rec aux rem seen =
      if NSet.is_empty rem then seen
      else
        let x = NSet.choose rem in
        let rem = NSet.remove x rem in
        if NSet.mem x seen then 
          aux rem seen
        else
          let seen = NSet.add x seen in
          let next = try NMap.find x graph with Not_found -> NSet.empty in
          let rem = NSet.union next rem in
          aux rem seen
    in
    aux (NSet.singleton x) NSet.empty

    let empty = { dir = NMap.empty; rev = NMap.empty; }

    (** Online transitive reduction algorithm *)
    let add_transitive_edge x y graph =
      if connected x y graph.dir then graph
      else
        let dir = add_edge x y graph.dir in
        let rev = add_edge y x graph.rev in
        let graph = { dir; rev; } in
        let ancestors = closure x rev in
        let descendents = closure y dir in
        let fold_ancestor a graph =
          let fold_descendent b graph =
            let to_remove = has_edge a b graph.dir in
            let to_remove = to_remove && not (node_equal x a && node_equal y b) in
            let to_remove = to_remove && connected_through a b x y graph.dir in
            if to_remove then
              let dir = remove_edge a b graph.dir in
              let rev = remove_edge b a graph.rev in
              { dir; rev; }
            else graph
          in
          NSet.fold fold_descendent descendents graph
        in
        NSet.fold fold_ancestor ancestors graph

  let iter f graph =
    let iter x set = NSet.iter (fun y -> f x y) set in
    NMap.iter iter graph.dir

end

module Graph =
struct
(** Dumping a dependency graph **)

module DAG = DAG(struct type t = string let compare = compare end)

(** TODO: we should share this code with Coqdep_common *)
let treat_coq_file chan =
  let buf = Lexing.from_channel chan in
  let deja_vu_v = ref ([]: string list list)
  and deja_vu_ml = ref ([] : string list) in
  let mark_v_done acc str =
    let seen = List.mem str !deja_vu_v in
    if not seen then
      let () = addQueue deja_vu_v str in
      try
        let file_str = Hashtbl.find vKnown str in
        (canonize file_str, !suffixe) :: acc
      with Not_found -> acc
    else acc
  in
  let rec loop acc =
    let token = try Some (coq_action buf) with Fin_fichier -> None in
    match token with
    | None -> acc
    | Some action ->
      let acc = match action with
      | Require strl ->
        List.fold_left mark_v_done acc strl
      | RequireString s ->
        let str = Filename.basename s in
        mark_v_done acc [str]
      | Declare sl ->
        let declare suff dir s =
          let base = file_name s dir in
          let opt = if !option_natdynlk then " " ^ base ^ ".cmxs" else "" in
          (escape base, suff ^ opt)
        in
        let decl acc str =
          let s = basename_noext str in
          if not (List.mem s !deja_vu_ml) then
            let () = addQueue deja_vu_ml s in
            match search_mllib_known s with
            | Some mldir -> (declare ".cma" mldir s) :: acc
            | None ->
              match search_ml_known s with
              | Some mldir -> (declare ".cmo" mldir s) :: acc
              | None -> acc
          else acc
        in
        List.fold_left decl acc sl
      | Load str ->
        let str = Filename.basename str in
        let seen = List.mem [str] !deja_vu_v in
        if not seen then
          let () = addQueue deja_vu_v [str] in
          try
            let file_str = Hashtbl.find vKnown [str] in
            (canonize file_str, ".v") :: acc
          with Not_found -> acc
        else acc
      | AddLoadPath _ | AddRecLoadPath _ -> acc (** TODO *)
      in
      loop acc
  in
  loop []

let treat_coq_file f =
  let chan = try Some (open_in f) with Sys_error _ -> None in
  match chan with
  | None -> []
  | Some chan ->
    try
      let ans = treat_coq_file chan in
      let () = close_in chan in
      ans
    with Syntax_error (i, j) -> close_in chan; error_cannot_parse f (i, j)

type graph =
  | Element of string
  | Subgraph of string * graph list

let rec insert_graph name path graphs = match path, graphs with
  | [] , graphs -> (Element name) :: graphs
  | (box :: boxes), (Subgraph (hd, names)) :: tl when hd = box ->
    Subgraph (hd, insert_graph name boxes names) :: tl
  | _, hd :: tl -> hd :: (insert_graph name path tl)
  | (box :: boxes), [] -> [ Subgraph (box, insert_graph name boxes []) ]

let print_graphs chan graph =
  let rec print_aux name = function
  | [] -> name
  | (Element str) :: tl -> fprintf chan "%s\n" str; print_aux name tl
  | Subgraph (box, names) :: tl ->
    fprintf chan "subgraph cluster%n {\n label=\"%s\"" name box;
    let name = print_aux (name + 1) names in
    fprintf chan "}\n"; print_aux name tl
  in
  ignore (print_aux 0 graph)

let rec pop_common_prefix = function
  | [Subgraph (_, graphs)] -> pop_common_prefix graphs
  | graphs -> graphs

let split_path = Str.split (Str.regexp "/")

let rec pop_last = function
  | [] -> []
  | [ x ] -> []
  | x :: xs -> x :: pop_last xs

let get_boxes path = pop_last (split_path path)

let insert_raw_graph file =
  insert_graph (basename_noext file) (get_boxes file)

let rec get_dependencies name args =
  let vdep  = treat_coq_file (name ^ ".v") in
  let fold (deps, graphs, alseen) (dep, _) =
    let dag = DAG.add_transitive_edge name dep deps in
    if not (List.mem dep alseen) then
      get_dependencies dep (dag, insert_raw_graph dep graphs, dep :: alseen)
    else
      (dag, graphs, alseen)
  in
  List.fold_left fold args vdep

let coq_dependencies_dump chan dumpboxes =
  let (deps, graphs, _) =
    List.fold_left (fun ih (name, _) -> get_dependencies name ih)
    (DAG.empty, List.fold_left (fun ih (file, _) -> insert_raw_graph file ih) [] !vAccu,
    List.map fst !vAccu) !vAccu
  in
  fprintf chan "digraph dependencies {\n"; flush chan;
  if dumpboxes then print_graphs chan (pop_common_prefix graphs)
  else List.iter (fun (name, _) -> fprintf chan "\"%s\"[label=\"%s\"]\n" name (basename_noext name)) !vAccu;
  DAG.iter (fun name dep -> fprintf chan "\"%s\" -> \"%s\"\n" dep name) deps;
  fprintf chan "}\n"

end

let usage () =
  eprintf " usage: coqdep [-w] [-c] [-D] [-I dir] [-R dir coqdir] <filename>+\n";
  eprintf " extra options:\n";
  eprintf "  -coqlib dir : set the coq standard library directory\n";
  eprintf "  -exclude-dir f : skip subdirectories named 'f' during -R search\n";
  eprintf "  -dumpgraph f : print a dot dependency graph in file 'f'\n";
  exit 1

let rec parse = function
  | "-c" :: ll -> option_c := true; parse ll
  | "-D" :: ll -> option_D := true; parse ll
  | "-w" :: ll -> option_w := true; parse ll
  | "-boot" :: ll -> Flags.boot := true; parse ll
  | "-sort" :: ll -> option_sort := true; parse ll
  | ("-noglob" | "-no-glob") :: ll -> option_noglob := true; parse ll
  | "-I" :: r :: "-as" :: ln :: ll -> add_dir add_known r [ln]; parse ll
  | "-I" :: r :: "-as" :: [] -> usage ()
  | "-I" :: r :: ll -> add_dir add_known r []; parse ll
  | "-I" :: [] -> usage ()
  | "-R" :: r :: "-as" :: ln :: ll -> add_rec_dir add_known r [ln]; parse ll
  | "-R" :: r :: "-as" :: [] -> usage ()
  | "-R" :: r :: ln :: ll -> add_rec_dir add_known r [ln]; parse ll
  | "-R" :: ([] | [_]) -> usage ()
  | "-dumpgraph" :: f :: ll -> option_dump := Some (false, f); parse ll
  | "-dumpgraphbox" :: f :: ll -> option_dump := Some (true, f); parse ll
  | "-exclude-dir" :: r :: ll -> norec_dirnames := r::!norec_dirnames; parse ll
  | "-exclude-dir" :: [] -> usage ()
  | "-coqlib" :: r :: ll -> Flags.coqlib_spec := true; Flags.coqlib := r; parse ll
  | "-coqlib" :: [] -> usage ()
  | "-suffix" :: s :: ll -> suffixe := s ; parse ll
  | "-suffix" :: [] -> usage ()
  | "-slash" :: ll ->
    Printf.eprintf "warning: option -slash has no effect and is deprecated.\n";
    parse ll
  | ("-h"|"--help"|"-help") :: _ -> usage ()
  | f :: ll -> treat_file None f; parse ll
  | [] -> ()

let coqdep () =
  if Array.length Sys.argv < 2 then usage ();
  parse (List.tl (Array.to_list Sys.argv));
  if not Coq_config.has_natdynlink then option_natdynlk := false;
  (* NOTE: These directories are searched from last to first *)
  if !Flags.boot then begin
    add_rec_dir add_known "theories" ["Coq"];
    add_rec_dir add_known "plugins" ["Coq"]
  end else begin
    Envars.set_coqlib ~fail:Errors.error;
    let coqlib = Envars.coqlib () in
    add_rec_dir add_coqlib_known (coqlib//"theories") ["Coq"];
    add_rec_dir add_coqlib_known (coqlib//"plugins") ["Coq"];
    let user = coqlib//"user-contrib" in
    if Sys.file_exists user then add_rec_dir add_coqlib_known user [];
    List.iter (fun s -> add_rec_dir add_coqlib_known s [])
      (Envars.xdg_dirs (fun x -> Pp.msg_warning (Pp.str x)));
    List.iter (fun s -> add_rec_dir add_coqlib_known s []) Envars.coqpath;
  end;
  List.iter (fun (f,d) -> add_mli_known f d) !mliAccu;
  List.iter (fun (f,d) -> add_mllib_known f d) !mllibAccu;
  List.iter (fun (f,_,d) -> add_ml_known f d) !mlAccu;
  warning_mult ".mli" iter_mli_known;
  warning_mult ".ml" iter_ml_known;
  if !option_sort then begin sort (); exit 0 end;
  if !option_c && not !option_D then mL_dependencies ();
  if not !option_D then coq_dependencies ();
  if !option_w || !option_D then declare_dependencies ();
  begin match !option_dump with
  | None -> ()
  | Some (box, file) ->
    let chan = open_out file in
    try Graph.coq_dependencies_dump chan box; close_out chan
    with e -> close_out chan; raise e
  end

let _ = Printexc.catch coqdep ()