Commit | Line | Data |
---|---|---|
34e49164 | 1 | open Common |
90aeb998 | 2 | open Sexplib |
34e49164 C |
3 | |
4 | (*****************************************************************************) | |
5 | (* Test framework *) | |
6 | (*****************************************************************************) | |
7 | ||
8 | (* There can be multiple .c for the same cocci file. The convention | |
9 | * is to have one base.cocci and a base.c and some optional | |
10 | * base_vernn.[c,res]. | |
ae4735db | 11 | * |
34e49164 C |
12 | * If want to test without iso, use -iso_file empty.iso option. |
13 | *) | |
c3e37e97 | 14 | let testone prefix x compare_with_expected_flag = |
34e49164 C |
15 | let x = if x =~ "\\(.*\\)_ver0$" then matched1 x else x in |
16 | let base = if x =~ "\\(.*\\)_ver[0-9]+$" then matched1 x else x in | |
17 | ||
c3e37e97 C |
18 | let cfile = prefix ^ x ^ ".c" in |
19 | let cocci_file = prefix ^ base ^ ".cocci" in | |
34e49164 | 20 | |
c3e37e97 | 21 | let expected_res = prefix ^ x ^ ".res" in |
34e49164 | 22 | begin |
b1b2de81 C |
23 | let cocci_infos = Cocci.pre_engine (cocci_file, !Config.std_iso) in |
24 | let res = Cocci.full_engine cocci_infos [cfile] in | |
25 | Cocci.post_engine cocci_infos; | |
ae4735db | 26 | let generated = |
34e49164 | 27 | match Common.optionise (fun () -> List.assoc cfile res) with |
ae4735db C |
28 | | Some (Some outfile) -> |
29 | if List.length res > 1 | |
34e49164 C |
30 | then pr2 ("note that not just " ^ cfile ^ " was involved"); |
31 | ||
32 | let tmpfile = "/tmp/"^Common.basename cfile in | |
33 | pr2 (sprintf "One file modified. Result is here: %s" tmpfile); | |
34 | Common.command2 ("mv "^outfile^" "^tmpfile); | |
35 | tmpfile | |
ae4735db | 36 | | Some None -> |
34e49164 C |
37 | pr2 "no modification on the input file"; |
38 | cfile | |
39 | | None -> raise Impossible | |
40 | in | |
41 | if compare_with_expected_flag | |
ae4735db C |
42 | then |
43 | Compare_c.compare_default generated expected_res | |
44 | +> Compare_c.compare_result_to_string | |
34e49164 C |
45 | +> pr2; |
46 | end | |
ae4735db | 47 | |
34e49164 C |
48 | |
49 | (* ------------------------------------------------------------------------ *) | |
ae4735db C |
50 | (* note: if you get some weird results in -testall, and not in -test, |
51 | * it is possible that a test file work in -test but may not | |
708f4980 | 52 | * work while used inside a -testall. If we have some bugs in our |
ae4735db | 53 | * parser that modify some global state and that those states |
708f4980 C |
54 | * are not reseted between each test file, then having run previous |
55 | * test files may have an influence on another test file which mean | |
56 | * than a test may work in isolation (via -test) but not otherwise | |
57 | * (via -testall). Fortunately such bugs are rare. | |
ae4735db | 58 | * |
708f4980 C |
59 | *) |
60 | let testall ?(expected_score_file="tests/SCORE_expected.sexp") () = | |
ae4735db | 61 | |
b1b2de81 | 62 | let score = empty_score () in |
34e49164 | 63 | |
ae4735db C |
64 | let expected_result_files = |
65 | Common.glob "tests/*.res" | |
34e49164 C |
66 | +> List.filter (fun f -> Common.filesize f > 0) |
67 | +> List.map Filename.basename | |
68 | +> List.sort compare | |
69 | in | |
70 | ||
71 | begin | |
ae4735db C |
72 | expected_result_files +> List.iter (fun res -> |
73 | let x = | |
b1b2de81 | 74 | if res =~ "\\(.*\\).res" then matched1 res else raise Impossible in |
ae4735db | 75 | let base = if x =~ "\\(.*\\)_ver[0-9]+" then matched1 x else x in |
34e49164 C |
76 | let cfile = "tests/" ^ x ^ ".c" in |
77 | let cocci_file = "tests/" ^ base ^ ".cocci" in | |
78 | let expected = "tests/" ^ res in | |
79 | ||
80 | let timeout_testall = 30 in | |
81 | ||
82 | try ( | |
ae4735db | 83 | Common.timeout_function timeout_testall (fun () -> |
b1b2de81 | 84 | |
708f4980 C |
85 | pr2 res; |
86 | ||
b1b2de81 C |
87 | let cocci_infos = Cocci.pre_engine (cocci_file, !Config.std_iso) in |
88 | let xs = Cocci.full_engine cocci_infos [cfile] in | |
89 | Cocci.post_engine cocci_infos; | |
90 | ||
ae4735db | 91 | let generated = |
34e49164 C |
92 | match List.assoc cfile xs with |
93 | | Some generated -> generated | |
94 | | None -> cfile | |
95 | in | |
96 | ||
97 | let (correct, diffxs) = Compare_c.compare_default generated expected | |
98 | in | |
99 | ||
34e49164 C |
100 | (* I don't use Compare_c.compare_result_to_string because |
101 | * I want to indent a little more the messages. | |
102 | *) | |
103 | (match correct with | |
b1b2de81 | 104 | | Compare_c.Correct -> Hashtbl.add score res Common.Ok; |
ae4735db C |
105 | | Compare_c.Pb s -> |
106 | let s = Str.global_replace | |
34e49164 | 107 | (Str.regexp "\"/tmp/cocci-output.*\"") "<COCCIOUTPUTFILE>" s |
978fd7e5 C |
108 | in |
109 | (* on macos the temporary files are stored elsewhere *) | |
ae4735db | 110 | let s = Str.global_replace |
978fd7e5 | 111 | (Str.regexp "\"/var/folders/.*/cocci-output.*\"") "<COCCIOUTPUTFILE>" s |
34e49164 | 112 | in |
ae4735db C |
113 | let s = |
114 | "INCORRECT:" ^ s ^ "\n" ^ | |
34e49164 C |
115 | " diff (result(<) vs expected_result(>)) = \n" ^ |
116 | (diffxs +> List.map(fun s -> " "^s^"\n") +> Common.join "") | |
117 | in | |
b1b2de81 | 118 | Hashtbl.add score res (Common.Pb s) |
ae4735db C |
119 | | Compare_c.PbOnlyInNotParsedCorrectly s -> |
120 | let s = | |
34e49164 C |
121 | "seems incorrect, but only because of code that " ^ |
122 | "was not parsable" ^ s | |
123 | in | |
b1b2de81 | 124 | Hashtbl.add score res (Common.Pb s) |
34e49164 C |
125 | ) |
126 | ) | |
127 | ) | |
ae4735db | 128 | with exn -> |
34e49164 C |
129 | Common.reset_pr_indent(); |
130 | let s = "PROBLEM\n" ^ (" exn = " ^ Printexc.to_string exn ^ "\n") in | |
b1b2de81 | 131 | Hashtbl.add score res (Common.Pb s) |
34e49164 C |
132 | ); |
133 | ||
134 | ||
135 | pr2 "--------------------------------"; | |
136 | pr2 "statistics"; | |
137 | pr2 "--------------------------------"; | |
138 | ||
ae4735db | 139 | Common.hash_to_list score +> List.iter (fun (s, v) -> |
34e49164 C |
140 | pr_no_nl (Printf.sprintf "%-30s: " s); |
141 | pr_no_nl ( | |
142 | match v with | |
ae4735db | 143 | | Common.Ok -> "CORRECT\n" |
34e49164 C |
144 | | Common.Pb s -> s |
145 | ) | |
146 | ); | |
147 | flush stdout; flush stderr; | |
148 | ||
149 | pr2 "--------------------------------"; | |
150 | pr2 "regression testing information"; | |
151 | pr2 "--------------------------------"; | |
ae4735db | 152 | |
708f4980 | 153 | (* now default argument of testall: |
b1b2de81 | 154 | let expected_score_file = "tests/SCORE_expected.sexp" in |
708f4980 C |
155 | *) |
156 | let expected_score_file_orig = "tests/SCORE_expected_orig.sexp" in | |
b1b2de81 C |
157 | let best_of_both_file = "tests/SCORE_best_of_both.sexp" in |
158 | let actual_score_file = "tests/SCORE_actual.sexp" in | |
708f4980 | 159 | |
b1b2de81 | 160 | pr2 ("regression file: "^ expected_score_file); |
ae4735db | 161 | let (expected_score : score) = |
b1b2de81 | 162 | if Sys.file_exists expected_score_file |
ae4735db | 163 | then |
b1b2de81 C |
164 | let sexp = Sexp.load_sexp expected_score_file in |
165 | Sexp_common.score_of_sexp sexp | |
ae4735db C |
166 | else |
167 | if Sys.file_exists expected_score_file_orig | |
708f4980 C |
168 | then begin |
169 | pr2 (spf "use expected orig file (%s)" expected_score_file_orig); | |
ae4735db | 170 | Common.command2 (spf "cp %s %s" expected_score_file_orig |
708f4980 C |
171 | expected_score_file); |
172 | let sexp = Sexp.load_sexp expected_score_file in | |
173 | Sexp_common.score_of_sexp sexp | |
174 | end | |
ae4735db | 175 | else |
708f4980 | 176 | empty_score() |
b1b2de81 | 177 | in |
34e49164 | 178 | |
b1b2de81 C |
179 | let new_bestscore = Common.regression_testing_vs score expected_score in |
180 | ||
181 | ||
182 | let xs = Common.hash_to_list score in | |
183 | let sexp = Sexp_common.sexp_of_score_list xs in | |
184 | let s_score = Sexp.to_string_hum sexp in | |
185 | Common.write_file ~file:(actual_score_file) s_score; | |
186 | ||
187 | let xs2 = Common.hash_to_list new_bestscore in | |
188 | let sexp2 = Sexp_common.sexp_of_score_list xs2 in | |
189 | let s_score2 = Sexp.to_string_hum sexp2 in | |
190 | Common.write_file ~file:(best_of_both_file) s_score2; | |
191 | ||
192 | Common.print_total_score score; | |
193 | ||
194 | let (good, total) = Common.total_scores score in | |
195 | let (expected_good, expected_total) = Common.total_scores expected_score in | |
196 | ||
ae4735db C |
197 | if good = expected_good |
198 | then begin | |
b1b2de81 C |
199 | pr2 "Current score is equal to expected score; everything is fine"; |
200 | raise (UnixExit 0); | |
201 | end | |
ae4735db | 202 | else |
b1b2de81 | 203 | if good < expected_good |
ae4735db | 204 | then begin |
708f4980 C |
205 | pr2 "Current score is lower than expected :("; |
206 | pr2 (spf "(was expecting %d but got %d)" expected_good good); | |
b1b2de81 C |
207 | pr2 ""; |
208 | pr2 "If you think it's normal, then maybe you need to update the"; | |
209 | pr2 (spf "score file %s, copying info from %s." | |
210 | expected_score_file actual_score_file); | |
211 | raise (UnixExit 1); | |
212 | end | |
213 | else begin | |
708f4980 C |
214 | pr2 "Current score is greater than expected :)"; |
215 | pr2 (spf "(was expecting %d but got %d)" expected_good good); | |
b1b2de81 C |
216 | pr2 "Generating new expected score file and saving old one"; |
217 | Common.command2_y_or_no_exit_if_no | |
218 | (spf "mv %s %s" expected_score_file (expected_score_file ^ ".save")); | |
219 | Common.command2_y_or_no_exit_if_no | |
220 | (spf "mv %s %s" best_of_both_file expected_score_file); | |
221 | raise (UnixExit 0); | |
222 | end | |
ae4735db | 223 | |
34e49164 C |
224 | end |
225 | ||
226 | (* ------------------------------------------------------------------------ *) | |
227 | ||
228 | type okfailed = Ok | SpatchOK | Failed | |
229 | ||
230 | (* test_to_string *) | |
231 | let t_to_s = function | |
232 | | Ok -> ".ok" | |
233 | | SpatchOK -> ".spatch_ok" | |
234 | | Failed -> ".failed" | |
235 | ||
ae4735db C |
236 | let delete_previous_result_files infile = |
237 | [Ok;SpatchOK;Failed] +> List.iter (fun kind -> | |
34e49164 C |
238 | Common.command2 ("rm -f " ^ infile ^ t_to_s kind) |
239 | ) | |
240 | ||
241 | (* quite similar to compare_with_expected below *) | |
ae4735db | 242 | let test_okfailed cocci_file cfiles = |
34e49164 C |
243 | cfiles +> List.iter delete_previous_result_files; |
244 | ||
245 | (* final_files contain the name of an output file (a .ok or .failed | |
246 | * or .spatch_ok), and also some additionnal strings to be printed in | |
247 | * this output file in addition to the general error message of | |
248 | * full_engine. *) | |
ae4735db | 249 | let final_files = ref [] in |
34e49164 C |
250 | |
251 | ||
ae4735db C |
252 | let newout = |
253 | Common.new_temp_file "cocci" ".stdout" | |
34e49164 C |
254 | in |
255 | ||
256 | let t = Unix.gettimeofday () in | |
ae4735db | 257 | let time_per_file_str () = |
34e49164 C |
258 | let t' = Unix.gettimeofday () in |
259 | let tdiff = t' -. t in | |
260 | let tperfile = tdiff /. (float_of_int (List.length cfiles)) in | |
261 | spf "time: %f" tperfile | |
262 | in | |
ae4735db C |
263 | |
264 | Common.redirect_stdout_stderr newout (fun () -> | |
34e49164 C |
265 | try ( |
266 | Common.timeout_function_opt !Flag_cocci.timeout (fun () -> | |
267 | ||
b1b2de81 C |
268 | let cocci_infos = Cocci.pre_engine (cocci_file, !Config.std_iso) in |
269 | let outfiles = Cocci.full_engine cocci_infos cfiles in | |
270 | Cocci.post_engine cocci_infos; | |
34e49164 C |
271 | |
272 | let time_str = time_per_file_str () in | |
ae4735db C |
273 | |
274 | outfiles +> List.iter (fun (infile, outopt) -> | |
34e49164 | 275 | let (dir, base, ext) = Common.dbe_of_filename infile in |
ae4735db | 276 | let expected_suffix = |
34e49164 C |
277 | match ext with |
278 | | "c" -> "res" | |
279 | | "h" -> "h.res" | |
0708f913 | 280 | | s -> pr2 ("WEIRD: not a .c or .h :" ^ base ^ "." ^ s); |
34e49164 C |
281 | "" (* no extension, will compare to same file *) |
282 | in | |
ae4735db | 283 | let expected_res = |
34e49164 | 284 | Common.filename_of_dbe (dir, base, expected_suffix) in |
ae4735db C |
285 | let expected_res2 = |
286 | Common.filename_of_dbe (dir,"corrected_"^ base,expected_suffix) | |
34e49164 | 287 | in |
ae4735db | 288 | |
34e49164 C |
289 | (* can delete more than the first delete_previous_result_files |
290 | * because here we can have more files than in cfiles, for instance | |
291 | * the header files | |
292 | *) | |
293 | delete_previous_result_files infile; | |
ae4735db | 294 | |
34e49164 | 295 | match outopt, Common.lfile_exists expected_res with |
ae4735db | 296 | | None, false -> |
34e49164 | 297 | () |
ae4735db | 298 | | Some outfile, false -> |
34e49164 C |
299 | let s =("PB: input file " ^ infile ^ " modified but no .res") in |
300 | push2 (infile^t_to_s Failed, [s;time_str]) final_files | |
ae4735db C |
301 | |
302 | | x, true -> | |
303 | let outfile = | |
304 | match x with | |
305 | | Some outfile -> outfile | |
306 | | None -> infile | |
34e49164 | 307 | in |
ae4735db | 308 | |
34e49164 C |
309 | let diff = Compare_c.compare_default outfile expected_res in |
310 | let s1 = (Compare_c.compare_result_to_string diff) in | |
b1b2de81 | 311 | if fst diff =*= Compare_c.Correct |
34e49164 | 312 | then push2 (infile ^ (t_to_s Ok), [s1;time_str]) final_files |
ae4735db | 313 | else |
34e49164 C |
314 | if Common.lfile_exists expected_res2 |
315 | then begin | |
316 | let diff = Compare_c.compare_default outfile expected_res2 in | |
317 | let s2 = Compare_c.compare_result_to_string diff in | |
b1b2de81 | 318 | if fst diff =*= Compare_c.Correct |
ae4735db | 319 | then push2 (infile ^ (t_to_s SpatchOK),[s2;s1;time_str]) |
34e49164 | 320 | final_files |
ae4735db | 321 | else push2 (infile ^ (t_to_s Failed), [s2;s1;time_str]) |
34e49164 C |
322 | final_files |
323 | end | |
324 | else push2 (infile ^ (t_to_s Failed), [s1;time_str]) final_files | |
325 | ) | |
326 | ); | |
327 | ) | |
ae4735db | 328 | with exn -> |
34e49164 C |
329 | let clean s = |
330 | Str.global_replace (Str.regexp "\\\\n") "\n" | |
331 | (Str.global_replace (Str.regexp ("\\\\\"")) "\"" | |
332 | (Str.global_replace (Str.regexp "\\\\t") "\t" s)) in | |
333 | let s = "PROBLEM\n"^(" exn = " ^ clean(Printexc.to_string exn) ^ "\n") | |
334 | in | |
ae4735db | 335 | let time_str = time_per_file_str () |
34e49164 C |
336 | in |
337 | (* we may miss some file because cfiles is shorter than outfiles. | |
338 | * For instance the detected local headers are not in cfiles, so | |
339 | * may have less failed. But at least have some failed. | |
340 | *) | |
ae4735db | 341 | cfiles +> List.iter (fun infile -> |
34e49164 C |
342 | push2 (infile ^ (t_to_s Failed), [s;time_str]) final_files; |
343 | ); | |
344 | ); | |
ae4735db | 345 | !final_files +> List.iter (fun (file, additional_strs) -> |
34e49164 | 346 | Common.command2 ("cp " ^ newout ^ " " ^ file); |
ae4735db | 347 | with_open_outfile file (fun (pr, chan) -> |
34e49164 C |
348 | additional_strs +> List.iter (fun s -> pr (s ^ "\n")) |
349 | ); | |
ae4735db | 350 | |
34e49164 C |
351 | ) |
352 | ||
353 | ||
ae4735db | 354 | let test_regression_okfailed () = |
34e49164 C |
355 | |
356 | (* it's xxx.c.ok *) | |
357 | let chop_ext f = f +> Filename.chop_extension in | |
358 | ||
359 | let newscore = Common.empty_score () in | |
ae4735db C |
360 | let oks = |
361 | Common.cmd_to_list ("find -name \"*.ok\"") | |
34e49164 C |
362 | ++ |
363 | Common.cmd_to_list ("find -name \"*.spatch_ok\"") | |
364 | in | |
365 | let failed = Common.cmd_to_list ("find -name \"*.failed\"") in | |
366 | ||
ae4735db | 367 | if null (oks ++ failed) |
34e49164 C |
368 | then failwith "no ok/failed file, you certainly did a make clean" |
369 | else begin | |
ae4735db | 370 | oks +> List.iter (fun s -> |
34e49164 C |
371 | Hashtbl.add newscore (chop_ext s) Common.Ok |
372 | ); | |
ae4735db | 373 | failed +> List.iter (fun s -> |
34e49164 C |
374 | Hashtbl.add newscore (chop_ext s) (Common.Pb "fail") |
375 | ); | |
376 | pr2 "--------------------------------"; | |
377 | pr2 "regression testing information"; | |
378 | pr2 "--------------------------------"; | |
379 | Common.regression_testing newscore ("score_failed.marshalled") | |
380 | end | |
ae4735db | 381 | |
34e49164 C |
382 | |
383 | (* ------------------------------------------------------------------------ *) | |
384 | (* quite similar to test_ok_failed. Maybe could factorize code *) | |
385 | let compare_with_expected outfiles = | |
386 | pr2 ""; | |
ae4735db | 387 | outfiles +> List.iter (fun (infile, outopt) -> |
34e49164 | 388 | let (dir, base, ext) = Common.dbe_of_filename infile in |
ae4735db | 389 | let expected_suffix = |
34e49164 C |
390 | match ext with |
391 | | "c" -> "res" | |
392 | | "h" -> "h.res" | |
0708f913 | 393 | | s -> failwith ("weird C file, not a .c or .h :" ^ s) |
34e49164 | 394 | in |
ae4735db | 395 | let expected_res = |
34e49164 | 396 | Common.filename_of_dbe (dir, base, expected_suffix) in |
ae4735db C |
397 | let expected_res2 = |
398 | Common.filename_of_dbe (dir,"corrected_"^ base,expected_suffix) | |
34e49164 | 399 | in |
ae4735db | 400 | |
34e49164 C |
401 | match outopt, Common.lfile_exists expected_res with |
402 | | None, false -> () | |
ae4735db | 403 | | Some outfile, false -> |
34e49164 C |
404 | let s =("PB: input file " ^ infile ^ " modified but no .res") in |
405 | pr2 s | |
ae4735db C |
406 | | x, true -> |
407 | let outfile = | |
408 | match x with | |
409 | | Some outfile -> outfile | |
410 | | None -> infile | |
34e49164 C |
411 | in |
412 | let diff = Compare_c.compare_default outfile expected_res in | |
413 | let s1 = (Compare_c.compare_result_to_string diff) in | |
b1b2de81 | 414 | if fst diff =*= Compare_c.Correct |
34e49164 | 415 | then pr2_no_nl (infile ^ " " ^ s1) |
ae4735db | 416 | else |
34e49164 C |
417 | if Common.lfile_exists expected_res2 |
418 | then begin | |
419 | let diff = Compare_c.compare_default outfile expected_res2 in | |
420 | let s2 = Compare_c.compare_result_to_string diff in | |
b1b2de81 | 421 | if fst diff =*= Compare_c.Correct |
34e49164 C |
422 | then pr2 (infile ^ " is spatchOK " ^ s2) |
423 | else pr2 (infile ^ " is failed " ^ s2) | |
424 | end | |
425 | else pr2 (infile ^ " is failed " ^ s1) | |
426 | ) | |
427 | ||
428 | (*****************************************************************************) | |
429 | (* Subsystem testing *) | |
430 | (*****************************************************************************) | |
431 | ||
ae4735db C |
432 | let test_parse_cocci file = |
433 | if not (file =~ ".*\\.cocci") | |
34e49164 C |
434 | then pr2 "warning: seems not a .cocci file"; |
435 | ||
7f004419 | 436 | let (_,xs,_,_,_,_,grep_tokens,query) = |
34e49164 C |
437 | Parse_cocci.process file (Some !Config.std_iso) false in |
438 | xs +> List.iter Pretty_print_cocci.unparse; | |
174d1640 C |
439 | Format.print_newline(); |
440 | (* compile ocaml script code *) | |
441 | (match Prepare_ocamlcocci.prepare file xs with | |
442 | None -> () | |
443 | | Some ocaml_script_file -> | |
444 | (* compile file *) | |
445 | Prepare_ocamlcocci.load_file ocaml_script_file; | |
446 | (* remove file *) | |
447 | Prepare_ocamlcocci.clean_file ocaml_script_file; | |
448 | (* Print the list of registered functions *) | |
449 | Prepare_ocamlcocci.test ()); | |
34e49164 | 450 | Printf.printf "grep tokens\n"; |
90aeb998 C |
451 | (match grep_tokens with |
452 | None -> pr "No query" | |
453 | | Some x -> pr (String.concat " || " x)); | |
951c7801 | 454 | match !Flag.scanner with |
90aeb998 | 455 | Flag.NoScanner | Flag.Grep -> () |
951c7801 | 456 | | Flag.Glimpse | Flag.Google _ -> |
413ffc02 C |
457 | Printf.printf "%s tokens\n" |
458 | (if !Flag.scanner = Flag.Glimpse then "glimpse" else "google"); | |
951c7801 C |
459 | (match query with |
460 | None -> pr "No query" | |
413ffc02 | 461 | | Some x -> pr (String.concat " ||\n" x)) |
34e49164 C |
462 | |
463 | ||
464 | ||
465 | (*****************************************************************************) | |
466 | (* to be called by ocaml toplevel, to test. *) | |
467 | (*****************************************************************************) | |
468 | ||
469 | (* no point to memoize this one *) | |
470 | let sp_of_file file iso = Parse_cocci.process file iso false | |
471 | ||
472 | (* TODO: Remove | |
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473 | *) |
474 | ||
475 | (* | |
ae4735db | 476 | let flows_of_ast astc = |
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477 | astc +> Common.map_filter (fun e -> ast_to_flow_with_error_messages e) |
478 | ||
ae4735db | 479 | let one_flow flows = |
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480 | List.hd flows |
481 | ||
482 | let one_ctl ctls = List.hd (List.hd ctls) | |
483 | *) | |
484 |