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tree-optimization/112618 - unused .MASK_CALL
[official-gcc.git] / gcc / ada / usage.adb
blob681ece5d921c6cc08c3405dd1527bce8cf8ca1df
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- U S A G E --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2023, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
25
26 -- Warning: the output of this usage for warnings is duplicated in the GNAT
27 -- reference manual. Be sure to update that if you change the warning list.
28
29 with Namet; use Namet;
30 with Opt; use Opt;
31 with Osint; use Osint;
32 with Output; use Output;
33
34 with System.WCh_Con; use System.WCh_Con;
35
36 procedure Usage is
37
38 procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat");
39 -- Output two spaces followed by the switch character minus followed
40 -- Prefix, followed by the string given as the argument, and then enough
41 -- blanks to tab to column 13, i.e. assuming Sw is not longer than 5
42 -- characters, the maximum allowed, Write_Switch_Char will always output
43 -- exactly 12 characters.
44
45 -----------------------
46 -- Write_Switch_Char --
47 -----------------------
48
49 procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat") is
50 begin
51 Write_Str (" -");
52 Write_Str (Prefix);
53 Write_Str (Sw);
54
55 for J in 1 .. 12 - 3 - Prefix'Length - Sw'Length loop
56 Write_Char (' ');
57 end loop;
58 end Write_Switch_Char;
59
60 -- Start of processing for Usage
61
62 begin
63 Find_Program_Name;
64
65 -- For gnatmake, we are appending this information to the end of
66 -- the normal gnatmake output, so generate appropriate header
67
68 if Name_Len >= 8
69 and then (Name_Buffer (Name_Len - 7 .. Name_Len) = "gnatmake"
70 or else
71 Name_Buffer (Name_Len - 7 .. Name_Len) = "GNATMAKE")
72 then
73 Write_Eol;
74 Write_Line ("Compiler switches (passed to the compiler by gnatmake):");
75
76 else
77 -- Usage line
78
79 Write_Str ("Usage: ");
80 Write_Program_Name;
81 Write_Char (' ');
82 Write_Str ("switches sfile");
83 Write_Eol;
84 Write_Eol;
85
86 -- Line for sfile
87
88 Write_Line (" sfile Source file name");
89 end if;
90
91 Write_Eol;
92
93 -- Common switches available everywhere
94
95 Write_Switch_Char ("g ", "");
96 Write_Line ("Generate debugging information");
97
98 Write_Switch_Char ("Idir ", "");
99 Write_Line ("Specify source files search path");
100
101 Write_Switch_Char ("I- ", "");
102 Write_Line ("Do not look for sources in current directory");
103
104 Write_Switch_Char ("O[0123] ", "");
105 Write_Line ("Control the optimization level");
106
107 Write_Eol;
108
109 -- Individual lines for switches. Write_Switch_Char outputs fourteen
110 -- characters, so the remaining message is allowed to be a maximum of
111 -- 65 characters to be comfortable in an 80 character window.
112
113 -- Line for -gnata switch
114
115 Write_Switch_Char ("a");
116 Write_Line ("Assertions enabled. Pragma Assert/Debug to be activated");
117
118 -- Line for -gnatA switch
119
120 Write_Switch_Char ("A");
121 Write_Line ("Avoid processing gnat.adc, if present file will be ignored");
122
123 -- Line for -gnatb switch
124
125 Write_Switch_Char ("b");
126 Write_Line ("Generate brief messages to stderr even if verbose mode set");
127
128 -- Line for -gnatB switch
129
130 Write_Switch_Char ("B");
131 Write_Line ("Assume no bad (invalid) values except in 'Valid attribute");
132
133 -- Line for -gnatc switch
134
135 Write_Switch_Char ("c");
136 Write_Line ("Check syntax and semantics only (no code generation)");
137
138 -- Line for -gnatC switch
139
140 Write_Switch_Char ("C");
141 Write_Line ("Generate CodePeer intermediate format (no code generation)");
142
143 -- Line for -gnatd switch
144
145 Write_Switch_Char ("d?");
146 Write_Line ("Compiler debug option ? ([.]a-z,A-Z,0-9), see debug.adb");
147
148 -- Line for -gnatD switch
149
150 Write_Switch_Char ("D");
151 Write_Line ("Debug expanded generated code (max line length = 72)");
152 Write_Switch_Char ("Dnn");
153 Write_Line ("Debug expanded generated code (max line length = nn)");
154
155 -- No line for -gnatea : internal switch
156
157 -- Line for -gnateA switch
158
159 Write_Switch_Char ("eA");
160 Write_Line ("Aliasing checks on subprogram parameters");
161
162 -- Line for -gnatec switch
163
164 Write_Switch_Char ("ec=?");
165 Write_Line ("Specify configuration pragmas file, e.g. -gnatec=/x/f.adc");
166
167 -- Line for -gnateC switch
168
169 Write_Switch_Char ("eC");
170 Write_Line ("Generate CodePeer messages (ignored without -gnatcC)");
171
172 -- Line for -gnated switch
173
174 Write_Switch_Char ("ed");
175 Write_Line ("Disable synchronization of atomic variables");
176
177 -- Line for -gnateD switch
178
179 Write_Switch_Char ("eD?");
180 Write_Line ("Define or redefine preprocessing symbol, e.g. -gnateDsym=val");
181
182 -- Line for -gnateE switch
183
184 Write_Switch_Char ("eE");
185 Write_Line ("Generate extra information in exception messages");
186
187 -- Line for -gnatef switch
188
189 Write_Switch_Char ("ef");
190 Write_Line ("Full source path in brief error messages and JSON output");
191
192 -- Line for -gnateF switch
193
194 Write_Switch_Char ("eF");
195 Write_Line ("Check overflow on predefined Float types");
196
197 -- Line for -gnateG switch
198
199 Write_Switch_Char ("eG");
200 Write_Line ("Generate preprocessed source");
201
202 -- Line for -gnateH switch
203
204 Write_Switch_Char ("eH");
205 Write_Line ("Set reverse Bit_Order threshold to 64");
206
207 -- Line for -gnatei switch
208
209 Write_Switch_Char ("einn");
210 Write_Line ("Set maximum number of instantiations to nn");
211
212 -- Line for -gnateI switch
213
214 Write_Switch_Char ("eInn");
215 Write_Line ("Index in multi-unit source, e.g. -gnateI2");
216
217 -- Line for -gnatel switch
218
219 Write_Switch_Char ("el");
220 Write_Line ("Turn on info messages on generated Elaborate[_All] pragmas");
221
222 -- Line for -gnateL switch
223
224 Write_Switch_Char ("eL");
225 Write_Line ("Turn off info messages on generated Elaborate[_All] pragmas");
226
227 -- Line for -gnatem switch
228
229 Write_Switch_Char ("em=?");
230 Write_Line ("Specify mapping file, e.g. -gnatem=mapping");
231
232 -- No line for -gnateO=? : internal switch
233
234 -- Line for -gnatep switch
235
236 Write_Switch_Char ("ep=?");
237 Write_Line ("Specify preprocessing data file, e.g. -gnatep=prep.data");
238
239 -- Line for -gnateP switch
240
241 Write_Switch_Char ("eP");
242 Write_Line ("Pure/Prelaborate errors generate warnings rather than errors");
243
244 -- No line for -gnates=? : internal switch
245
246 -- Line for -gnateS switch
247
248 Write_Switch_Char ("eS");
249 Write_Line ("Generate SCO (Source Coverage Obligation) information");
250
251 -- Line for -gnatet switch
252
253 Write_Switch_Char ("et=?");
254 Write_Line ("Write target dependent information file ?, e.g. gnatet=tdf");
255
256 -- Line for -gnateT switch
257
258 Write_Switch_Char ("eT=?");
259 Write_Line ("Read target dependent information file ?, e.g. gnateT=tdf");
260
261 -- Line for -gnateu switch
262
263 Write_Switch_Char ("eu");
264 Write_Line ("Ignore unrecognized style/validity/warning switches");
265
266 -- Line for -gnateV switch
267
268 Write_Switch_Char ("eV");
269 Write_Line ("Validity checks on subprogram parameters");
270
271 -- Line for -gnateY switch
272
273 Write_Switch_Char ("eY");
274 Write_Line ("Ignore all Style_Checks pragmas in source");
275
276 -- No line for -gnatez : internal switch
277
278 -- Line for -gnatE switch
279
280 Write_Switch_Char ("E");
281 Write_Line ("Dynamic elaboration checking mode enabled");
282
283 -- Line for -gnatf switch
284
285 Write_Switch_Char ("f");
286 Write_Line ("Full errors. Verbose details, all undefined references");
287
288 -- Line for -gnatF switch
289
290 Write_Switch_Char ("F");
291 Write_Line ("Force all import/export external names to all uppercase");
292
293 -- Line for -gnatg switch
294
295 Write_Switch_Char ("g");
296 Write_Line ("GNAT implementation mode (used for compiling GNAT units)");
297
298 -- Lines for -gnatG switch
299
300 Write_Switch_Char ("G");
301 Write_Line ("Output generated expanded code (max line length = 72)");
302 Write_Switch_Char ("Gnn");
303 Write_Line ("Output generated expanded code (max line length = nn)");
304
305 -- Line for -gnath switch
306
307 Write_Switch_Char ("h");
308 Write_Line ("Output this usage (help) information");
309
310 -- Line for -gnatH switch
311
312 Write_Switch_Char ("H");
313 Write_Line ("Legacy elaboration checking mode enabled");
314
315 -- Line for -gnati switch
316
317 Write_Switch_Char ("i?");
318 Write_Line ("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)");
319
320 -- Line for -gnatI switch
321
322 Write_Switch_Char ("I");
323 Write_Line ("Ignore all representation clauses");
324
325 -- Line for -gnatj switch
326
327 Write_Switch_Char ("jnn");
328 Write_Line ("Format error and warning messages to fit nn character lines");
329
330 -- Line for -gnatJ switch
331
332 Write_Switch_Char ("J");
333 Write_Line ("Relaxed elaboration checking mode enabled");
334
335 -- Line for -gnatk switch
336
337 Write_Switch_Char ("k");
338 Write_Line ("Limit file names to nn characters (k = krunch)");
339
340 -- Lines for -gnatl switch
341
342 Write_Switch_Char ("l");
343 Write_Line ("Output full source listing with embedded error messages");
344 Write_Switch_Char ("l=f");
345 Write_Line ("Output full source listing to specified file");
346
347 -- Line for -gnatL switch
348
349 Write_Switch_Char ("L");
350 Write_Line ("List corresponding source text in -gnatG or -gnatD output");
351
352 -- Line for -gnatm switch
353
354 Write_Switch_Char ("mnn");
355 Write_Line ("Limit number of detected errors/warnings to nn (1-999999)");
356
357 -- Line for -gnatn switch
358
359 Write_Switch_Char ("n[?]");
360 Write_Line ("Enable pragma Inline across units (?=1/2 for moderate/full)");
361
362 -- Line for -gnato switch
363
364 Write_Switch_Char ("o0");
365 Write_Line ("Disable overflow checking");
366
367 Write_Switch_Char ("o");
368 Write_Line ("Enable overflow checking in STRICT (-gnato1) mode (default)");
369
370 -- Lines for -gnato? switches
371
372 Write_Switch_Char ("o?");
373 Write_Line
374 ("Enable overflow checks in STRICT/MINIMIZED/ELIMINATED (1/2/3) mode ");
375 Write_Switch_Char ("o??");
376 Write_Line
377 ("Set mode for general/assertion expressions separately");
378
379 -- No line for -gnatO : internal switch
380
381 -- Line for -gnatp switch
382
383 Write_Switch_Char ("p");
384 Write_Line ("Suppress all checks");
385
386 -- Line for -gnatq switch
387
388 Write_Switch_Char ("q");
389 Write_Line ("Don't quit, try semantics, even if parse errors");
390
391 -- Line for -gnatQ switch
392
393 Write_Switch_Char ("Q");
394 Write_Line ("Don't quit, write ali/tree file even if compile errors");
395
396 -- Line for -gnatr switch
397
398 Write_Switch_Char ("r");
399 Write_Line ("Treat pragma Restrictions as Restriction_Warnings");
400
401 -- Lines for -gnatR switch
402
403 Write_Switch_Char ("R?");
404 Write_Line
405 ("List rep info (?=0/1/2/3/4/e/m for none/types/all/sym/cg/ext/mech)");
406 Write_Switch_Char ("R?j");
407 Write_Line ("List rep info in the JSON data interchange format");
408 Write_Switch_Char ("R?s");
409 Write_Line ("List rep info to file.rep instead of standard output");
410
411 -- Line for -gnats switch
412
413 Write_Switch_Char ("s");
414 Write_Line ("Syntax check only");
415
416 -- Line for -gnatS switch
417
418 Write_Switch_Char ("S");
419 Write_Line ("Print listing of package Standard");
420
421 -- Line for -gnatTnn switch
422
423 Write_Switch_Char ("Tnn");
424 Write_Line ("All compiler tables start at nn times usual starting size");
425
426 -- Line for -gnatu switch
427
428 Write_Switch_Char ("u");
429 Write_Line ("List units for this compilation");
430
431 -- Line for -gnatU switch
432
433 Write_Switch_Char ("U");
434 Write_Line ("Enable unique tag for error messages");
435
436 -- Line for -gnatv switch
437
438 Write_Switch_Char ("v");
439 Write_Line ("Verbose mode. Full error output with source lines to stdout");
440
441 -- Lines for -gnatV switch
442
443 Write_Switch_Char ("Vxx");
444 Write_Line
445 ("Enable selected validity checking mode, xx = list of parameters:");
446 Write_Line (" a turn on all validity checking options");
447 Write_Line (" c turn on checking for copies");
448 Write_Line (" C turn off checking for copies");
449 Write_Line (" d turn on default (RM) checking");
450 Write_Line (" D turn off default (RM) checking");
451 Write_Line (" e turn on checking for elementary components");
452 Write_Line (" E turn off checking for elementary components");
453 Write_Line (" f turn on checking for floating-point");
454 Write_Line (" F turn off checking for floating-point");
455 Write_Line (" i turn on checking for in params");
456 Write_Line (" I turn off checking for in params");
457 Write_Line (" m turn on checking for in out params");
458 Write_Line (" M turn off checking for in out params");
459 Write_Line (" n turn off all validity checks (including RM)");
460 Write_Line (" o turn on checking for operators/attributes");
461 Write_Line (" O turn off checking for operators/attributes");
462 Write_Line (" p turn on checking for parameters");
463 Write_Line (" P turn off checking for parameters");
464 Write_Line (" r turn on checking for returns");
465 Write_Line (" R turn off checking for returns");
466 Write_Line (" s turn on checking for subscripts");
467 Write_Line (" S turn off checking for subscripts");
468 Write_Line (" t turn on checking for tests");
469 Write_Line (" T turn off checking for tests");
470
471 -- Lines for -gnatw switch
472
473 Write_Switch_Char ("wxx");
474 Write_Line ("Enable selected warning modes, xx = list of parameters:");
475 Write_Line (" * indicates default setting");
476 Write_Line (" + indicates warning flag included in -gnatwa");
477 Write_Line (" a turn on all info/warnings marked below with +");
478 Write_Line (" A turn off all optional info/warnings");
479 Write_Line (" .a*+ turn on warnings for failing assertion");
480 Write_Line (" .A turn off warnings for failing assertion");
481 Write_Line (" _a*+ turn on warnings for anonymous allocators");
482 Write_Line (" _A turn off warnings for anonymous allocators");
483 Write_Line (" b+ turn on warnings for bad fixed value " &
484 "(not multiple of small)");
485 Write_Line (" B* turn off warnings for bad fixed value " &
486 "(not multiple of small)");
487 Write_Line (" .b*+ turn on warnings for biased representation");
488 Write_Line (" .B turn off warnings for biased representation");
489 Write_Line (" c+ turn on warnings for constant conditional");
490 Write_Line (" C* turn off warnings for constant conditional");
491 Write_Line (" .c+ turn on warnings for components without " &
492 "representation clauses");
493 Write_Line (" .C* turn off warnings for components without " &
494 "representation clauses");
495 Write_Line (" _c* turn on warnings for unknown " &
496 "Compile_Time_Warning");
497 Write_Line (" _C turn off warnings for unknown " &
498 "Compile_Time_Warning");
499 Write_Line (" d turn on warnings for implicit dereference");
500 Write_Line (" D* turn off warnings for implicit dereference");
501 Write_Line (" .d turn on tagging of warnings with -gnatw switch");
502 Write_Line (" .D* turn off tagging of warnings with -gnatw switch");
503 Write_Line (" e treat all warnings (but not info) as errors");
504 Write_Line (" .e turn on every optional info/warning " &
505 "(no exceptions)");
506 Write_Line (" E treat all run-time warnings as errors");
507 Write_Line (" f+ turn on warnings for unreferenced formal");
508 Write_Line (" F* turn off warnings for unreferenced formal");
509 Write_Line (" .f turn on warnings for suspicious Subp'Access");
510 Write_Line (" .F* turn off warnings for suspicious Subp'Access");
511 Write_Line (" g*+ turn on warnings for unrecognized pragma");
512 Write_Line (" G turn off warnings for unrecognized pragma");
513 Write_Line (" .g turn on GNAT warnings");
514 Write_Line (" h turn on warnings for hiding declarations");
515 Write_Line (" H* turn off warnings for hiding declarations");
516 Write_Line (" .h turn on warnings for holes in records");
517 Write_Line (" .H* turn off warnings for holes in records");
518 Write_Line (" i*+ turn on warnings for implementation unit");
519 Write_Line (" I turn off warnings for implementation unit");
520 Write_Line (" .i*+ turn on warnings for overlapping actuals");
521 Write_Line (" .I turn off warnings for overlapping actuals");
522 Write_Line (" j+ turn on warnings for obsolescent " &
523 "(annex J) feature");
524 Write_Line (" J* turn off warnings for obsolescent " &
525 "(annex J) feature");
526 Write_Line (" .j+ turn on warnings for late dispatching " &
527 "primitives");
528 Write_Line (" .J* turn off warnings for late dispatching " &
529 "primitives");
530 Write_Line (" k+ turn on warnings on constant variable");
531 Write_Line (" K* turn off warnings on constant variable");
532 Write_Line (" .k turn on warnings for standard redefinition");
533 Write_Line (" .K* turn off warnings for standard redefinition");
534 Write_Line (" l turn on warnings for elaboration problems");
535 Write_Line (" L* turn off warnings for elaboration problems");
536 Write_Line (" .l turn on info messages for inherited aspects");
537 Write_Line (" .L* turn off info messages for inherited aspects");
538 Write_Line (" m+ turn on warnings for variable assigned " &
539 "but not read");
540 Write_Line (" M* turn off warnings for variable assigned " &
541 "but not read");
542 Write_Line (" .m*+ turn on warnings for suspicious usage " &
543 "of modular type");
544 Write_Line (" .M turn off warnings for suspicious usage " &
545 "of modular type");
546 Write_Line (" n* normal warning mode (cancels -gnatws/-gnatwe)");
547 Write_Line (" .n turn on info messages for atomic " &
548 "synchronization");
549 Write_Line (" .N* turn off info messages for atomic " &
550 "synchronization");
551 Write_Line (" o* turn on warnings for address clause overlay");
552 Write_Line (" O turn off warnings for address clause overlay");
553 Write_Line (" .o turn on warnings for out parameters assigned " &
554 "but not read");
555 Write_Line (" .O* turn off warnings for out parameters assigned " &
556 "but not read");
557 Write_Line (" p+ turn on warnings for ineffective pragma " &
558 "Inline in frontend");
559 Write_Line (" P* turn off warnings for ineffective pragma " &
560 "Inline in frontend");
561 Write_Line (" .p+ turn on warnings for suspicious parameter " &
562 "order");
563 Write_Line (" .P* turn off warnings for suspicious parameter " &
564 "order");
565 Write_Line (" _p turn on warnings for pedantic checks");
566 Write_Line (" _P turn off warnings for pedantic checks");
567 Write_Line (" q*+ turn on warnings for questionable " &
568 "missing parenthesis");
569 Write_Line (" Q turn off warnings for questionable " &
570 "missing parenthesis");
571 Write_Line (" .q+ turn on warnings for questionable layout of " &
572 "record types");
573 Write_Line (" .Q* turn off warnings for questionable layout of " &
574 "record types");
575 Write_Line (" _q turn on warnings for ignored " &
576 "equality operators");
577 Write_Line (" _Q* turn off warnings for ignored " &
578 "equality operators");
579 Write_Line (" r+ turn on warnings for redundant construct");
580 Write_Line (" R* turn off warnings for redundant construct");
581 Write_Line (" .r+ turn on warnings for object renaming function");
582 Write_Line (" .R* turn off warnings for object renaming function");
583 Write_Line (" _r turn on warnings for components out of order");
584 Write_Line (" _R turn off warnings for components out of order");
585 Write_Line (" s suppress all info/warnings");
586 Write_Line (" .s turn on warnings for overridden size clause");
587 Write_Line (" .S* turn off warnings for overridden size clause");
588 Write_Line (" _s+ turn on warnings for ineffective predicate " &
589 "tests");
590 Write_Line (" _S* turn off warnings for ineffective predicate " &
591 "tests");
592 Write_Line (" t turn on warnings for tracking deleted code");
593 Write_Line (" T* turn off warnings for tracking deleted code");
594 Write_Line (" .t*+ turn on warnings for suspicious contract");
595 Write_Line (" .T turn off warnings for suspicious contract");
596 Write_Line (" u+ turn on warnings for unused entity");
597 Write_Line (" U* turn off warnings for unused entity");
598 Write_Line (" .u turn on warnings for unordered enumeration");
599 Write_Line (" .U* turn off warnings for unordered enumeration");
600 Write_Line (" v*+ turn on warnings for unassigned variable");
601 Write_Line (" V turn off warnings for unassigned variable");
602 Write_Line (" .v*+ turn on info messages for reverse bit order");
603 Write_Line (" .V turn off info messages for reverse bit order");
604 Write_Line (" w*+ turn on warnings for wrong low bound assumption");
605 Write_Line (" W turn off warnings for wrong low bound " &
606 "assumption");
607 Write_Line (" .w turn on warnings on pragma Warnings Off");
608 Write_Line (" .W* turn off warnings on pragma Warnings Off");
609 Write_Line (" x*+ turn on warnings for export/import");
610 Write_Line (" X turn off warnings for export/import");
611 Write_Line (" .x+ turn on warnings for non-local exception");
612 Write_Line (" .X* turn off warnings for non-local exception");
613 Write_Line (" y*+ turn on warnings for Ada compatibility issues");
614 Write_Line (" Y turn off warnings for Ada compatibility issues");
615 Write_Line (" .y turn on info messages for why pkg body needed");
616 Write_Line (" .Y* turn off info messages for why pkg body needed");
617 Write_Line (" z*+ turn on warnings for suspicious " &
618 "unchecked conversion");
619 Write_Line (" Z turn off warnings for suspicious " &
620 "unchecked conversion");
621 Write_Line (" .z*+ turn on warnings for record size not a " &
622 "multiple of alignment");
623 Write_Line (" .Z turn off warnings for record size not a " &
624 "multiple of alignment");
625
626 -- Line for -gnatW switch
627
628 Write_Switch_Char ("W?");
629 Write_Str ("Wide character encoding method (?=");
630
631 for J in WC_Encoding_Method loop
632 Write_Char (WC_Encoding_Letters (J));
633
634 if J = WC_Encoding_Method'Last then
635 Write_Char (')');
636 else
637 Write_Char ('/');
638 end if;
639 end loop;
640
641 Write_Eol;
642
643 -- Line for -gnatx switch
644
645 Write_Switch_Char ("x");
646 Write_Line ("Suppress output of cross-reference information");
647
648 -- Line for -gnatX switch
649
650 Write_Switch_Char ("X");
651 Write_Line ("Language extensions permitted");
652
653 -- Lines for -gnaty switch
654
655 Write_Switch_Char ("y");
656 Write_Line ("Enable default style checks (same as -gnaty3abcefhiklmnprst)");
657 Write_Switch_Char ("yxx");
658 Write_Line ("Enable selected style checks xx = list of parameters:");
659 Write_Line (" 1-9 check indentation");
660 Write_Line (" a check attribute casing");
661 Write_Line (" A check array attribute indexes");
662 Write_Line (" b check no blanks at end of lines");
663 Write_Line (" B check no use of AND/OR for boolean expressions");
664 Write_Line (" c check comment format (two spaces)");
665 Write_Line (" C check comment format (one space)");
666 Write_Line (" d check no DOS line terminators");
667 Write_Line (" D check declared identifiers in mixed case");
668 Write_Line (" e check end/exit labels present");
669 Write_Line (" f check no form feeds/vertical tabs in source");
670 Write_Line (" g check standard GNAT style rules, same as ydISux");
671 Write_Line (" h check no horizontal tabs in source");
672 Write_Line (" i check if-then layout");
673 Write_Line (" I check mode in");
674 Write_Line (" k check casing rules for keywords");
675 Write_Line (" l check reference manual layout");
676 Write_Line (" Lnn check max nest level < nn ");
677 Write_Line (" m check line length <= 79 characters");
678 Write_Line (" Mnn check line length <= nn characters");
679 Write_Line (" n check casing of package Standard identifiers");
680 Write_Line (" N turn off all checks");
681 Write_Line (" o check subprogram bodies in alphabetical order");
682 Write_Line (" O check overriding indicators");
683 Write_Line (" p check pragma casing");
684 Write_Line (" r check casing for identifier references");
685 Write_Line (" s check separate subprogram specs present");
686 Write_Line (" S check separate lines after THEN or ELSE");
687 Write_Line (" t check token separation rules");
688 Write_Line (" u check no unnecessary blank lines");
689 Write_Line (" x check extra parentheses around conditionals");
690 Write_Line (" y turn on default style checks");
691 Write_Line (" z check parentheses not required by operator " &
692 "precedence rules");
693 Write_Line (" - subtract (turn off) subsequent checks");
694 Write_Line (" + add (turn on) subsequent checks");
695
696 -- Lines for -gnatyN switch
697
698 Write_Switch_Char ("yN");
699 Write_Line ("Cancel all previously set style checks");
700
701 -- Lines for -gnatzc switch
702
703 Write_Switch_Char ("zc");
704 Write_Line ("Distribution stub generation for caller stubs");
705
706 -- Lines for -gnatzr switch
707
708 Write_Switch_Char ("zr");
709 Write_Line ("Distribution stub generation for receiver stubs");
710
711 if not Latest_Ada_Only then
712
713 -- Line for -gnat83 switch
714
715 Write_Switch_Char ("83");
716 Write_Line ("Ada 83 mode");
717
718 -- Line for -gnat95 switch
719
720 Write_Switch_Char ("95");
721 Write_Line ("Ada 95 mode");
722
723 -- Line for -gnat2005 switch
724
725 Write_Switch_Char ("2005");
726 Write_Line ("Ada 2005 mode");
727 end if;
728
729 -- Line for -gnat2012 switch
730
731 Write_Switch_Char ("2012");
732
733 if Ada_Version_Default = Ada_2012 then
734 Write_Line ("Ada 2012 mode (default)");
735 else
736 Write_Line ("Ada 2012 mode");
737 end if;
738
739 -- Line for -gnat2022 switch
740
741 Write_Switch_Char ("2022");
742
743 if Ada_Version_Default = Ada_2022 then
744 Write_Line ("Ada 2022 mode (default)");
745 else
746 Write_Line ("Ada 2022 mode");
747 end if;
748
749 -- Line for -gnat-p switch
750
751 Write_Switch_Char ("-p");
752 Write_Line ("Cancel effect of previous -gnatp switch");
753
754 end Usage;
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