metrics_base.ml 10.6 KB
Newer Older
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
(**************************************************************************)
(*                                                                        *)
(*  This file is part of Frama-C.                                         *)
(*                                                                        *)
(*  Copyright (C) 2007-2018                                               *)
(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
(*         alternatives)                                                  *)
(*                                                                        *)
(*  you can redistribute it and/or modify it under the terms of the GNU   *)
(*  Lesser General Public License as published by the Free Software       *)
(*  Foundation, version 2.1.                                              *)
(*                                                                        *)
(*  It 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         *)
(*  GNU Lesser General Public License for more details.                   *)
(*                                                                        *)
(*  See the GNU Lesser General Public License version 2.1                 *)
(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
(*                                                                        *)
(**************************************************************************)

open Cil_types (* vname, vaddrof *)
;;

(* Formatting html with Format.formatters *)
let html_tag_functions =
  let mark_open_tag t = Format.sprintf "<%s>" t
  and mark_close_tag t =
    try
      let index = String.index t ' ' in
      Format.sprintf "</%s>" (String.sub t 0 index)
    with
      | Not_found -> Format.sprintf "</%s>" t
  and print_open_tag _ = ()
  and print_close_tag _ = ()
  in
  { Format.mark_open_tag = mark_open_tag;
    Format.mark_close_tag = mark_close_tag;
    Format.print_open_tag = print_open_tag;
    Format.print_close_tag = print_close_tag;
  }
;;

(* Utility function to have underlines the same length as the title.
   Underlines follow reStructuredText header conventions.
*)
let mk_hdr level ppf hdr_strg =
  let c = match level with
    | 1 -> '='
    | 2 -> '-'
    | 3 -> '~'
    | _ -> assert false
  in
  let len = String.length hdr_strg in
  let underline = String.make len c in
  Format.fprintf ppf "@[<v 0>%s@ %s@]" hdr_strg underline ;
;;

module OptionKf =
  Datatype.Option_with_collections
    (Cil_datatype.Kf)
    (struct let module_name = "OptionKf" end)

(** Defining base metrics and operations on those *)
module BasicMetrics = struct
(** Record type to compute cyclomatic complexity *)

  type t = {
    cfile_name : Datatype.Filepath.t;
    cfunc : OptionKf.t;
    cslocs: int;
    cifs: int;
    cloops: int;
    ccalls: int;
    cgotos: int;
    cassigns: int;
    cexits: int;
    cfuncs: int;
    cptrs: int;
    cdecision_points: int;
    cglob_vars: int;
    ccyclo: int;
  }
  ;;

  let empty_metrics =
    { cfile_name = Datatype.Filepath.dummy;
      cfunc = None;
      cslocs = 0;
      cifs = 0;
      cloops = 0;
      ccalls = 0;
      cgotos = 0;
      cassigns = 0;
      cexits = 0;
      cfuncs = 0;
      cptrs = 0;
      cdecision_points = 0;
      cglob_vars = 0;
      ccyclo = 0;
    }
  ;;


  let apply_then_set f metrics = metrics := f !metrics ;;

  let incr_slocs metrics = { metrics with cslocs = succ metrics.cslocs ;} ;;

  let incr_assigns metrics =
    { metrics with cassigns = succ metrics.cassigns ;}
  ;;

  let incr_calls metrics = { metrics with ccalls = succ metrics.ccalls ;} ;;

  let incr_exits metrics = { metrics with cexits = succ metrics.cexits ;} ;;

  let incr_funcs metrics = { metrics with cfuncs = succ metrics.cfuncs ;} ;;

  let incr_gotos metrics = { metrics with cgotos = succ metrics.cgotos ;} ;;

  let incr_ifs metrics = { metrics with cifs = succ metrics.cifs ;} ;;

  let incr_loops metrics = { metrics with cloops = succ metrics.cloops ;} ;;

  let incr_ptrs metrics = { metrics with cptrs = succ metrics.cptrs ;} ;;

  let incr_dpoints metrics =
    { metrics with cdecision_points = succ metrics.cdecision_points ;}
  ;;

  let incr_glob_vars metrics = { metrics with cglob_vars = succ metrics.cglob_vars ;} ;;

  let set_cyclo metrics cyclo = { metrics with ccyclo = cyclo ;} ;;

  (* Compute cyclomatic complexity of a given metrics record *)
  let compute_cyclo metrics =
    metrics.cdecision_points - metrics.cexits + 2
  ;;

  let labels =
      [ "Sloc"; "Decision point"; "Global variables"; "If"; "Loop";  "Goto";
        "Assignment"; "Exit point"; "Function"; "Function call";
        "Pointer dereferencing";
        "Cyclomatic complexity";
      ]
  ;;

  let str_values metrics =
    List.map string_of_int
      [ metrics.cslocs; metrics.cdecision_points; metrics.cglob_vars; metrics.cifs;
        metrics.cloops; metrics.cgotos; metrics.cassigns;
        metrics.cexits; metrics.cfuncs; metrics.ccalls;
        metrics.cptrs; metrics.ccyclo;
      ]
  ;;

  let to_list metrics =
    List.map2 (fun x y -> [ x; y; ]) labels (str_values metrics)
  ;;

  let pp_func_or_none =
    Pretty_utils.pp_opt ~none:"<none>" Kernel_function.pretty

(* Pretty print metrics as text eg. in stdout *)
  let pp_base_metrics fmt metrics =
    let heading =
      if metrics.cfile_name = Datatype.Filepath.dummy &&
         metrics.cfunc = None then
      (* It is a global metrics *)
        "Global metrics"
      else
        Format.asprintf "Stats for function <%a/%a>"
          Datatype.Filepath.pretty metrics.cfile_name
          pp_func_or_none metrics.cfunc
    in
    Format.fprintf fmt "@[<v 0>%a @ %a@]"
      (mk_hdr 1) heading
      ((fun l1 ppf l2 ->
        List.iter2 (fun x y -> Format.fprintf ppf "%s = %s@ " x y)
          l1 l2) labels)
      (str_values metrics)
  ;;

(* Dummy utility functions for pretty printing simple types *)
  let pp_int fmt n = Format.fprintf fmt "%d" n
  ;;

  type cell_type =
    | Classic
    | Entry
  ;;

  let cell_type_to_string = function
    | Entry -> "entry"
    | Classic -> "classic"
  ;;

  let pp_cell_type_html fmt cell_type =
    Format.fprintf fmt "class=\"%s\"" (cell_type_to_string cell_type)
  ;;

  (* Pretty print a HTML cell given a pretty printing function [pp_fun]
     and a value [pp_arg]
  *)
  let pp_cell cell_type pp_fun fmt pp_arg =
    Format.fprintf fmt "@{<td %a>%a@}"
      pp_cell_type_html cell_type
      pp_fun pp_arg
  ;;

  let pp_cell_default = pp_cell Classic;;

  let pp_base_metrics_as_html_row fmt metrics =
    Format.fprintf fmt "\
   @[<v 0>\
   @{<tr>@[<v 2>@ \
     @[<v 0>%a@ %a@ %a@ %a@ %a@ %a@ %a@ %a@ %a@ @]@]\
   @}@ @]"
      (pp_cell Entry pp_func_or_none) metrics.cfunc
      (pp_cell_default pp_int) metrics.cifs
      (pp_cell_default pp_int) metrics.cassigns
      (pp_cell_default pp_int) metrics.cloops
      (pp_cell_default pp_int) metrics.ccalls
      (pp_cell_default pp_int) metrics.cgotos
      (pp_cell_default pp_int) metrics.cptrs
      (pp_cell_default pp_int) metrics.cexits
      (pp_cell_default pp_int) metrics.ccyclo
  ;;

end (* End of BasicMetrics *)

(** {3 Filename utilities} *)

exception No_suffix;;
let get_suffix filename =
  try
    let slen = String.length filename in
    let last_idx = pred slen in
    let last_dot_idx = String.rindex_from filename last_idx '.' in
    if last_dot_idx < last_idx then
      String.sub filename (succ last_dot_idx) (slen - last_dot_idx - 1)
    else ""
  with
    | Not_found -> raise No_suffix
;;

type output_type =
  | Html
  | Text
;;

let get_file_type filename =
  try
    match get_suffix filename with
      | "html" | "htm" -> Html
      | "txt" | "text" -> Text
      | s ->
        Metrics_parameters.fatal
          "Unknown file extension %s. Cannot produce output.@." s
  with
    | No_suffix ->
       Metrics_parameters.fatal
         "File %s has no suffix. Cannot produce output.@." filename

module VarinfoByName = struct
  type t = Cil_types.varinfo
  let compare v1 v2 = Pervasives.compare v1.vname v2.vname
end

(** Map and sets of varinfos sorted by name (and not by ids) *)
module VInfoMap = FCMap.Make (VarinfoByName)
module VInfoSet = FCSet.Make (VarinfoByName)


(** Other pretty-printing and formatting utilities *)
let pretty_set fmt s =
  Format.fprintf fmt "@[";
  VInfoMap.iter
    (fun f n ->
      Format.fprintf fmt "%s %s(%d call%s);@ "
        f.Cil_types.vname
        (if f.vaddrof then "(address taken) " else "")
        n (if n > 1 then "s" else ""))
    s;
  Format.fprintf fmt "@]"

let pretty_extern_vars fmt s =
  Pretty_utils.pp_iter ~pre:"@[" ~suf:"@]" ~sep:";@ "
    VInfoSet.iter Printer.pp_varinfo fmt s

let is_in_libc attrs = Cil.hasAttribute "fc_stdlib" attrs ||
                       Cil.hasAttribute "fc_stdlib_generated" attrs

let is_entry_point vinfo times_called =
  times_called = 0 && not vinfo.vaddrof && not (is_in_libc vinfo.vattr)
;;

let number_entry_points fs =
  VInfoMap.fold
    (fun fvinfo n acc -> if is_entry_point fvinfo n then succ acc else acc)
    fs 0
;;

let pretty_entry_points  fmt fs =
  let print fmt =
    VInfoMap.iter
      (fun fvinfo n  ->
        if is_entry_point fvinfo n
        then Format.fprintf fmt "%s;@ " fvinfo.vname)
  in
  Format.fprintf fmt "@[<hov 1>%a@]" print fs;
;;

(* Utilities for CIL ASTs *)

let file_of_vinfodef fvinfo =
  let kf = Globals.Functions.get fvinfo in
  let decl_loc1, _decl_loc2 =
  match kf.fundec with
    | Definition (_, loc) -> loc
    | Declaration (_, _, _, loc) -> loc
  in decl_loc1.Filepath.pos_path
;;

let file_of_fundef (fun_dec: Cil_types.fundec) =
  file_of_vinfodef fun_dec.svar
;;

(* Utilities for Cabs ASTs *)

let extract_fundef_name sname =
  match sname with
    | _spec, (the_name, _, _, _) -> the_name
;;

let kf_of_cabs_name sname =
  match sname with
    | _spec, (the_name, _, _, _) -> Globals.Functions.find_by_name the_name

let get_filename fdef =
  match fdef with
  | Cabs.FUNDEF(_, _, _, (loc1, _), _loc2) ->
    loc1.Filepath.pos_path
  | _ -> assert false
;;

let consider_function ~libc vinfo =
  not (!Db.Value.mem_builtin vinfo.vname
       || Ast_info.is_frama_c_builtin vinfo.vname
       || Cil.is_unused_builtin vinfo
  ) && (libc || not (is_in_libc vinfo.vattr))

let consider_variable ~libc vinfo =
  not (Cil.hasAttribute "FRAMA_C_MODEL" vinfo.vattr) &&
    (libc || not (is_in_libc vinfo.vattr))

let float_to_string f =
  let s = Format.sprintf "%F" f in
  let len = String.length s in
  let plen = pred len in
  if s.[plen] = '.' then String.sub s 0 plen else Format.sprintf "%.2f" f

(*
Local Variables:
compile-command: "make -C ../../.."
End:
*)