File : par-prag.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- P A R . P R A G --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2016, 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 -- Generally the parser checks the basic syntax of pragmas, but does not
27 -- do specialized syntax checks for individual pragmas, these are deferred
28 -- to semantic analysis time (see unit Sem_Prag). There are some pragmas
29 -- which require recognition and either partial or complete processing
30 -- during parsing, and this unit performs this required processing.
31
32 with Fname.UF; use Fname.UF;
33 with Osint; use Osint;
34 with Rident; use Rident;
35 with Restrict; use Restrict;
36 with Stringt; use Stringt;
37 with Stylesw; use Stylesw;
38 with Uintp; use Uintp;
39 with Uname; use Uname;
40
41 with System.WCh_Con; use System.WCh_Con;
42
43 separate (Par)
44
45 function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
46 Prag_Name : constant Name_Id := Pragma_Name (Pragma_Node);
47 Prag_Id : constant Pragma_Id := Get_Pragma_Id (Prag_Name);
48 Pragma_Sloc : constant Source_Ptr := Sloc (Pragma_Node);
49 Arg_Count : Nat;
50 Arg_Node : Node_Id;
51
52 -----------------------
53 -- Local Subprograms --
54 -----------------------
55
56 procedure Add_List_Pragma_Entry (PT : List_Pragma_Type; Loc : Source_Ptr);
57 -- Make a new entry in the List_Pragmas table if this entry is not already
58 -- in the table (it will always be the last one if there is a duplication
59 -- resulting from the use of Save/Restore_Scan_State).
60
61 function Arg1 return Node_Id;
62 function Arg2 return Node_Id;
63 function Arg3 return Node_Id;
64 -- Obtain specified Pragma_Argument_Association. It is allowable to call
65 -- the routine for the argument one past the last present argument, but
66 -- that is the only case in which a non-present argument can be referenced.
67
68 procedure Check_Arg_Count (Required : Int);
69 -- Check argument count for pragma = Required. If not give error and raise
70 -- Error_Resync.
71
72 procedure Check_Arg_Is_String_Literal (Arg : Node_Id);
73 -- Check the expression of the specified argument to make sure that it
74 -- is a string literal. If not give error and raise Error_Resync.
75
76 procedure Check_Arg_Is_On_Or_Off (Arg : Node_Id);
77 -- Check the expression of the specified argument to make sure that it
78 -- is an identifier which is either ON or OFF, and if not, then issue
79 -- an error message and raise Error_Resync.
80
81 procedure Check_No_Identifier (Arg : Node_Id);
82 -- Checks that the given argument does not have an identifier. If
83 -- an identifier is present, then an error message is issued, and
84 -- Error_Resync is raised.
85
86 procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
87 -- Checks if the given argument has an identifier, and if so, requires
88 -- it to match the given identifier name. If there is a non-matching
89 -- identifier, then an error message is given and Error_Resync raised.
90
91 procedure Check_Required_Identifier (Arg : Node_Id; Id : Name_Id);
92 -- Same as Check_Optional_Identifier, except that the name is required
93 -- to be present and to match the given Id value.
94
95 procedure Process_Restrictions_Or_Restriction_Warnings;
96 -- Common processing for Restrictions and Restriction_Warnings pragmas.
97 -- For the most part, restrictions need not be processed at parse time,
98 -- since they only affect semantic processing. This routine handles the
99 -- exceptions as follows
100 --
101 -- No_Obsolescent_Features must be processed at parse time, since there
102 -- are some obsolescent features (e.g. character replacements) which are
103 -- handled at parse time.
104 --
105 -- SPARK must be processed at parse time, since this restriction controls
106 -- whether the scanner recognizes a spark HIDE directive formatted as an
107 -- Ada comment (and generates a Tok_SPARK_Hide token for the directive).
108 --
109 -- No_Dependence must be processed at parse time, since otherwise it gets
110 -- handled too late.
111 --
112 -- Note that we don't need to do full error checking for badly formed cases
113 -- of restrictions, since these will be caught during semantic analysis.
114
115 ---------------------------
116 -- Add_List_Pragma_Entry --
117 ---------------------------
118
119 procedure Add_List_Pragma_Entry (PT : List_Pragma_Type; Loc : Source_Ptr) is
120 begin
121 if List_Pragmas.Last < List_Pragmas.First
122 or else (List_Pragmas.Table (List_Pragmas.Last)) /= ((PT, Loc))
123 then
124 List_Pragmas.Append ((PT, Loc));
125 end if;
126 end Add_List_Pragma_Entry;
127
128 ----------
129 -- Arg1 --
130 ----------
131
132 function Arg1 return Node_Id is
133 begin
134 return First (Pragma_Argument_Associations (Pragma_Node));
135 end Arg1;
136
137 ----------
138 -- Arg2 --
139 ----------
140
141 function Arg2 return Node_Id is
142 begin
143 return Next (Arg1);
144 end Arg2;
145
146 ----------
147 -- Arg3 --
148 ----------
149
150 function Arg3 return Node_Id is
151 begin
152 return Next (Arg2);
153 end Arg3;
154
155 ---------------------
156 -- Check_Arg_Count --
157 ---------------------
158
159 procedure Check_Arg_Count (Required : Int) is
160 begin
161 if Arg_Count /= Required then
162 Error_Msg ("wrong number of arguments for pragma%", Pragma_Sloc);
163 raise Error_Resync;
164 end if;
165 end Check_Arg_Count;
166
167 ----------------------------
168 -- Check_Arg_Is_On_Or_Off --
169 ----------------------------
170
171 procedure Check_Arg_Is_On_Or_Off (Arg : Node_Id) is
172 Argx : constant Node_Id := Expression (Arg);
173
174 begin
175 if Nkind (Expression (Arg)) /= N_Identifier
176 or else not Nam_In (Chars (Argx), Name_On, Name_Off)
177 then
178 Error_Msg_Name_2 := Name_On;
179 Error_Msg_Name_3 := Name_Off;
180
181 Error_Msg ("argument for pragma% must be% or%", Sloc (Argx));
182 raise Error_Resync;
183 end if;
184 end Check_Arg_Is_On_Or_Off;
185
186 ---------------------------------
187 -- Check_Arg_Is_String_Literal --
188 ---------------------------------
189
190 procedure Check_Arg_Is_String_Literal (Arg : Node_Id) is
191 begin
192 if Nkind (Expression (Arg)) /= N_String_Literal then
193 Error_Msg
194 ("argument for pragma% must be string literal",
195 Sloc (Expression (Arg)));
196 raise Error_Resync;
197 end if;
198 end Check_Arg_Is_String_Literal;
199
200 -------------------------
201 -- Check_No_Identifier --
202 -------------------------
203
204 procedure Check_No_Identifier (Arg : Node_Id) is
205 begin
206 if Chars (Arg) /= No_Name then
207 Error_Msg_N ("pragma% does not permit named arguments", Arg);
208 raise Error_Resync;
209 end if;
210 end Check_No_Identifier;
211
212 -------------------------------
213 -- Check_Optional_Identifier --
214 -------------------------------
215
216 procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id) is
217 begin
218 if Present (Arg) and then Chars (Arg) /= No_Name then
219 if Chars (Arg) /= Id then
220 Error_Msg_Name_2 := Id;
221 Error_Msg_N ("pragma% argument expects identifier%", Arg);
222 end if;
223 end if;
224 end Check_Optional_Identifier;
225
226 -------------------------------
227 -- Check_Required_Identifier --
228 -------------------------------
229
230 procedure Check_Required_Identifier (Arg : Node_Id; Id : Name_Id) is
231 begin
232 if Chars (Arg) /= Id then
233 Error_Msg_Name_2 := Id;
234 Error_Msg_N ("pragma% argument must have identifier%", Arg);
235 end if;
236 end Check_Required_Identifier;
237
238 --------------------------------------------------
239 -- Process_Restrictions_Or_Restriction_Warnings --
240 --------------------------------------------------
241
242 procedure Process_Restrictions_Or_Restriction_Warnings is
243 Arg : Node_Id;
244 Id : Name_Id;
245 Expr : Node_Id;
246
247 begin
248 Arg := Arg1;
249 while Present (Arg) loop
250 Id := Chars (Arg);
251 Expr := Expression (Arg);
252
253 if Id = No_Name and then Nkind (Expr) = N_Identifier then
254 case Chars (Expr) is
255 when Name_No_Obsolescent_Features =>
256 Set_Restriction (No_Obsolescent_Features, Pragma_Node);
257 Restriction_Warnings (No_Obsolescent_Features) :=
258 Prag_Id = Pragma_Restriction_Warnings;
259
260 when Name_SPARK | Name_SPARK_05 =>
261 Set_Restriction (SPARK_05, Pragma_Node);
262 Restriction_Warnings (SPARK_05) :=
263 Prag_Id = Pragma_Restriction_Warnings;
264
265 when others =>
266 null;
267 end case;
268
269 elsif Id = Name_No_Dependence then
270 Set_Restriction_No_Dependence
271 (Unit => Expr,
272 Warn => Prag_Id = Pragma_Restriction_Warnings
273 or else Treat_Restrictions_As_Warnings);
274 end if;
275
276 Next (Arg);
277 end loop;
278 end Process_Restrictions_Or_Restriction_Warnings;
279
280 -- Start of processing for Prag
281
282 begin
283 Error_Msg_Name_1 := Prag_Name;
284
285 -- Ignore unrecognized pragma. We let Sem post the warning for this, since
286 -- it is a semantic error, not a syntactic one (we have already checked
287 -- the syntax for the unrecognized pragma as required by (RM 2.8(11)).
288
289 if Prag_Id = Unknown_Pragma then
290 return Pragma_Node;
291 end if;
292
293 -- Ignore pragma previously flagged by Ignore_Pragma
294
295 if Get_Name_Table_Boolean3 (Prag_Name) then
296 return Pragma_Node;
297 end if;
298
299 -- Count number of arguments. This loop also checks if any of the arguments
300 -- are Error, indicating a syntax error as they were parsed. If so, we
301 -- simply return, because we get into trouble with cascaded errors if we
302 -- try to perform our error checks on junk arguments.
303
304 Arg_Count := 0;
305
306 if Present (Pragma_Argument_Associations (Pragma_Node)) then
307 Arg_Node := Arg1;
308 while Arg_Node /= Empty loop
309 Arg_Count := Arg_Count + 1;
310
311 if Expression (Arg_Node) = Error then
312 return Error;
313 end if;
314
315 Next (Arg_Node);
316 end loop;
317 end if;
318
319 -- Remaining processing is pragma dependent
320
321 case Prag_Id is
322
323 ------------
324 -- Ada_83 --
325 ------------
326
327 -- This pragma must be processed at parse time, since we want to set
328 -- the Ada version properly at parse time to recognize the appropriate
329 -- Ada version syntax.
330
331 when Pragma_Ada_83 =>
332 if not Latest_Ada_Only then
333 Ada_Version := Ada_83;
334 Ada_Version_Explicit := Ada_83;
335 Ada_Version_Pragma := Pragma_Node;
336 end if;
337
338 ------------
339 -- Ada_95 --
340 ------------
341
342 -- This pragma must be processed at parse time, since we want to set
343 -- the Ada version properly at parse time to recognize the appropriate
344 -- Ada version syntax.
345
346 when Pragma_Ada_95 =>
347 if not Latest_Ada_Only then
348 Ada_Version := Ada_95;
349 Ada_Version_Explicit := Ada_95;
350 Ada_Version_Pragma := Pragma_Node;
351 end if;
352
353 ---------------------
354 -- Ada_05/Ada_2005 --
355 ---------------------
356
357 -- These pragmas must be processed at parse time, since we want to set
358 -- the Ada version properly at parse time to recognize the appropriate
359 -- Ada version syntax. However, it is only the zero argument form that
360 -- must be processed at parse time.
361
362 when Pragma_Ada_05 | Pragma_Ada_2005 =>
363 if Arg_Count = 0 and not Latest_Ada_Only then
364 Ada_Version := Ada_2005;
365 Ada_Version_Explicit := Ada_2005;
366 Ada_Version_Pragma := Pragma_Node;
367 end if;
368
369 ---------------------
370 -- Ada_12/Ada_2012 --
371 ---------------------
372
373 -- These pragmas must be processed at parse time, since we want to set
374 -- the Ada version properly at parse time to recognize the appropriate
375 -- Ada version syntax. However, it is only the zero argument form that
376 -- must be processed at parse time.
377
378 when Pragma_Ada_12 | Pragma_Ada_2012 =>
379 if Arg_Count = 0 then
380 Ada_Version := Ada_2012;
381 Ada_Version_Explicit := Ada_2012;
382 Ada_Version_Pragma := Pragma_Node;
383 end if;
384
385 ---------------------------
386 -- Compiler_Unit_Warning --
387 ---------------------------
388
389 -- This pragma must be processed at parse time, since the resulting
390 -- status may be tested during the parsing of the program.
391
392 when Pragma_Compiler_Unit | Pragma_Compiler_Unit_Warning =>
393 Check_Arg_Count (0);
394
395 -- Only recognized in main unit
396
397 if Current_Source_Unit = Main_Unit then
398 Compiler_Unit := True;
399 end if;
400
401 -----------
402 -- Debug --
403 -----------
404
405 -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
406
407 when Pragma_Debug =>
408 Check_No_Identifier (Arg1);
409
410 if Arg_Count = 2 then
411 Check_No_Identifier (Arg2);
412 else
413 Check_Arg_Count (1);
414 end if;
415
416 -------------------------------
417 -- Extensions_Allowed (GNAT) --
418 -------------------------------
419
420 -- pragma Extensions_Allowed (Off | On)
421
422 -- The processing for pragma Extensions_Allowed must be done at
423 -- parse time, since extensions mode may affect what is accepted.
424
425 when Pragma_Extensions_Allowed =>
426 Check_Arg_Count (1);
427 Check_No_Identifier (Arg1);
428 Check_Arg_Is_On_Or_Off (Arg1);
429
430 if Chars (Expression (Arg1)) = Name_On then
431 Extensions_Allowed := True;
432 Ada_Version := Ada_2012;
433 else
434 Extensions_Allowed := False;
435 Ada_Version := Ada_Version_Explicit;
436 end if;
437
438 -------------------
439 -- Ignore_Pragma --
440 -------------------
441
442 -- Processing for this pragma must be done at parse time, since we want
443 -- be able to ignore pragmas that are otherwise processed at parse time.
444
445 when Pragma_Ignore_Pragma => Ignore_Pragma : declare
446 A : Node_Id;
447
448 begin
449 Check_Arg_Count (1);
450 Check_No_Identifier (Arg1);
451 A := Expression (Arg1);
452
453 if Nkind (A) /= N_Identifier then
454 Error_Msg ("incorrect argument for pragma %", Sloc (A));
455 else
456 Set_Name_Table_Boolean3 (Chars (A), True);
457 end if;
458 end Ignore_Pragma;
459
460 ----------------
461 -- List (2.8) --
462 ----------------
463
464 -- pragma List (Off | On)
465
466 -- The processing for pragma List must be done at parse time, since a
467 -- listing can be generated in parse only mode.
468
469 when Pragma_List =>
470 Check_Arg_Count (1);
471 Check_No_Identifier (Arg1);
472 Check_Arg_Is_On_Or_Off (Arg1);
473
474 -- We unconditionally make a List_On entry for the pragma, so that
475 -- in the List (Off) case, the pragma will print even in a region
476 -- of code with listing turned off (this is required).
477
478 Add_List_Pragma_Entry (List_On, Sloc (Pragma_Node));
479
480 -- Now generate the list off entry for pragma List (Off)
481
482 if Chars (Expression (Arg1)) = Name_Off then
483 Add_List_Pragma_Entry (List_Off, Semi);
484 end if;
485
486 ----------------
487 -- Page (2.8) --
488 ----------------
489
490 -- pragma Page;
491
492 -- Processing for this pragma must be done at parse time, since a
493 -- listing can be generated in parse only mode with semantics off.
494
495 when Pragma_Page =>
496 Check_Arg_Count (0);
497 Add_List_Pragma_Entry (Page, Semi);
498
499 ------------------
500 -- Restrictions --
501 ------------------
502
503 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
504
505 -- RESTRICTION ::=
506 -- restriction_IDENTIFIER
507 -- | restriction_parameter_IDENTIFIER => EXPRESSION
508
509 -- We process the case of No_Obsolescent_Features, since this has
510 -- a syntactic effect that we need to detect at parse time (the use
511 -- of replacement characters such as colon for pound sign).
512
513 when Pragma_Restrictions =>
514 Process_Restrictions_Or_Restriction_Warnings;
515
516 --------------------------
517 -- Restriction_Warnings --
518 --------------------------
519
520 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
521
522 -- RESTRICTION ::=
523 -- restriction_IDENTIFIER
524 -- | restriction_parameter_IDENTIFIER => EXPRESSION
525
526 -- See above comment for pragma Restrictions
527
528 when Pragma_Restriction_Warnings =>
529 Process_Restrictions_Or_Restriction_Warnings;
530
531 ----------------------------------------------------------
532 -- Source_File_Name and Source_File_Name_Project (GNAT) --
533 ----------------------------------------------------------
534
535 -- These two pragmas have the same syntax and semantics.
536 -- There are five forms of these pragmas:
537
538 -- pragma Source_File_Name[_Project] (
539 -- [UNIT_NAME =>] unit_NAME,
540 -- BODY_FILE_NAME => STRING_LITERAL
541 -- [, [INDEX =>] INTEGER_LITERAL]);
542
543 -- pragma Source_File_Name[_Project] (
544 -- [UNIT_NAME =>] unit_NAME,
545 -- SPEC_FILE_NAME => STRING_LITERAL
546 -- [, [INDEX =>] INTEGER_LITERAL]);
547
548 -- pragma Source_File_Name[_Project] (
549 -- BODY_FILE_NAME => STRING_LITERAL
550 -- [, DOT_REPLACEMENT => STRING_LITERAL]
551 -- [, CASING => CASING_SPEC]);
552
553 -- pragma Source_File_Name[_Project] (
554 -- SPEC_FILE_NAME => STRING_LITERAL
555 -- [, DOT_REPLACEMENT => STRING_LITERAL]
556 -- [, CASING => CASING_SPEC]);
557
558 -- pragma Source_File_Name[_Project] (
559 -- SUBUNIT_FILE_NAME => STRING_LITERAL
560 -- [, DOT_REPLACEMENT => STRING_LITERAL]
561 -- [, CASING => CASING_SPEC]);
562
563 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
564
565 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
566 -- Source_File_Name (SFN), however their usage is exclusive:
567 -- SFN can only be used when no project file is used, while
568 -- SFNP can only be used when a project file is used.
569
570 -- The Project Manager produces a configuration pragmas file that
571 -- is communicated to the compiler with -gnatec switch. This file
572 -- contains only SFNP pragmas (at least two for the default naming
573 -- scheme. As this configuration pragmas file is always the first
574 -- processed by the compiler, it prevents the use of pragmas SFN in
575 -- other config files when a project file is in use.
576
577 -- Note: we process this during parsing, since we need to have the
578 -- source file names set well before the semantic analysis starts,
579 -- since we load the spec and with'ed packages before analysis.
580
581 when Pragma_Source_File_Name | Pragma_Source_File_Name_Project =>
582 Source_File_Name : declare
583 Unam : Unit_Name_Type;
584 Expr1 : Node_Id;
585 Pat : String_Ptr;
586 Typ : Character;
587 Dot : String_Ptr;
588 Cas : Casing_Type;
589 Nast : Nat;
590 Expr : Node_Id;
591 Index : Nat;
592
593 function Get_Fname (Arg : Node_Id) return File_Name_Type;
594 -- Process file name from unit name form of pragma
595
596 function Get_String_Argument (Arg : Node_Id) return String_Ptr;
597 -- Process string literal value from argument
598
599 procedure Process_Casing (Arg : Node_Id);
600 -- Process Casing argument of pattern form of pragma
601
602 procedure Process_Dot_Replacement (Arg : Node_Id);
603 -- Process Dot_Replacement argument of pattern form of pragma
604
605 ---------------
606 -- Get_Fname --
607 ---------------
608
609 function Get_Fname (Arg : Node_Id) return File_Name_Type is
610 begin
611 String_To_Name_Buffer (Strval (Expression (Arg)));
612
613 for J in 1 .. Name_Len loop
614 if Is_Directory_Separator (Name_Buffer (J)) then
615 Error_Msg
616 ("directory separator character not allowed",
617 Sloc (Expression (Arg)) + Source_Ptr (J));
618 end if;
619 end loop;
620
621 return Name_Find;
622 end Get_Fname;
623
624 -------------------------
625 -- Get_String_Argument --
626 -------------------------
627
628 function Get_String_Argument (Arg : Node_Id) return String_Ptr is
629 Str : String_Id;
630
631 begin
632 if Nkind (Expression (Arg)) /= N_String_Literal
633 and then
634 Nkind (Expression (Arg)) /= N_Operator_Symbol
635 then
636 Error_Msg_N
637 ("argument for pragma% must be string literal", Arg);
638 raise Error_Resync;
639 end if;
640
641 Str := Strval (Expression (Arg));
642
643 -- Check string has no wide chars
644
645 for J in 1 .. String_Length (Str) loop
646 if Get_String_Char (Str, J) > 255 then
647 Error_Msg
648 ("wide character not allowed in pattern for pragma%",
649 Sloc (Expression (Arg2)) + Text_Ptr (J) - 1);
650 end if;
651 end loop;
652
653 -- Acquire string
654
655 String_To_Name_Buffer (Str);
656 return new String'(Name_Buffer (1 .. Name_Len));
657 end Get_String_Argument;
658
659 --------------------
660 -- Process_Casing --
661 --------------------
662
663 procedure Process_Casing (Arg : Node_Id) is
664 Expr : constant Node_Id := Expression (Arg);
665
666 begin
667 Check_Required_Identifier (Arg, Name_Casing);
668
669 if Nkind (Expr) = N_Identifier then
670 if Chars (Expr) = Name_Lowercase then
671 Cas := All_Lower_Case;
672 return;
673 elsif Chars (Expr) = Name_Uppercase then
674 Cas := All_Upper_Case;
675 return;
676 elsif Chars (Expr) = Name_Mixedcase then
677 Cas := Mixed_Case;
678 return;
679 end if;
680 end if;
681
682 Error_Msg_N
683 ("Casing argument for pragma% must be " &
684 "one of Mixedcase, Lowercase, Uppercase",
685 Arg);
686 end Process_Casing;
687
688 -----------------------------
689 -- Process_Dot_Replacement --
690 -----------------------------
691
692 procedure Process_Dot_Replacement (Arg : Node_Id) is
693 begin
694 Check_Required_Identifier (Arg, Name_Dot_Replacement);
695 Dot := Get_String_Argument (Arg);
696 end Process_Dot_Replacement;
697
698 -- Start of processing for Source_File_Name and
699 -- Source_File_Name_Project pragmas.
700
701 begin
702 if Prag_Id = Pragma_Source_File_Name then
703 if Project_File_In_Use = In_Use then
704 Error_Msg
705 ("pragma Source_File_Name cannot be used " &
706 "with a project file", Pragma_Sloc);
707
708 else
709 Project_File_In_Use := Not_In_Use;
710 end if;
711
712 else
713 if Project_File_In_Use = Not_In_Use then
714 Error_Msg
715 ("pragma Source_File_Name_Project should only be used " &
716 "with a project file", Pragma_Sloc);
717 else
718 Project_File_In_Use := In_Use;
719 end if;
720 end if;
721
722 -- We permit from 1 to 3 arguments
723
724 if Arg_Count not in 1 .. 3 then
725 Check_Arg_Count (1);
726 end if;
727
728 Expr1 := Expression (Arg1);
729
730 -- If first argument is identifier or selected component, then
731 -- we have the specific file case of the Source_File_Name pragma,
732 -- and the first argument is a unit name.
733
734 if Nkind (Expr1) = N_Identifier
735 or else
736 (Nkind (Expr1) = N_Selected_Component
737 and then
738 Nkind (Selector_Name (Expr1)) = N_Identifier)
739 then
740 if Nkind (Expr1) = N_Identifier
741 and then Chars (Expr1) = Name_System
742 then
743 Error_Msg_N
744 ("pragma Source_File_Name may not be used for System",
745 Arg1);
746 return Error;
747 end if;
748
749 -- Process index argument if present
750
751 if Arg_Count = 3 then
752 Expr := Expression (Arg3);
753
754 if Nkind (Expr) /= N_Integer_Literal
755 or else not UI_Is_In_Int_Range (Intval (Expr))
756 or else Intval (Expr) > 999
757 or else Intval (Expr) <= 0
758 then
759 Error_Msg
760 ("pragma% index must be integer literal" &
761 " in range 1 .. 999", Sloc (Expr));
762 raise Error_Resync;
763 else
764 Index := UI_To_Int (Intval (Expr));
765 end if;
766
767 -- No index argument present
768
769 else
770 Check_Arg_Count (2);
771 Index := 0;
772 end if;
773
774 Check_Optional_Identifier (Arg1, Name_Unit_Name);
775 Unam := Get_Unit_Name (Expr1);
776
777 Check_Arg_Is_String_Literal (Arg2);
778
779 if Chars (Arg2) = Name_Spec_File_Name then
780 Set_File_Name
781 (Get_Spec_Name (Unam), Get_Fname (Arg2), Index);
782
783 elsif Chars (Arg2) = Name_Body_File_Name then
784 Set_File_Name
785 (Unam, Get_Fname (Arg2), Index);
786
787 else
788 Error_Msg_N
789 ("pragma% argument has incorrect identifier", Arg2);
790 return Pragma_Node;
791 end if;
792
793 -- If the first argument is not an identifier, then we must have
794 -- the pattern form of the pragma, and the first argument must be
795 -- the pattern string with an appropriate name.
796
797 else
798 if Chars (Arg1) = Name_Spec_File_Name then
799 Typ := 's';
800
801 elsif Chars (Arg1) = Name_Body_File_Name then
802 Typ := 'b';
803
804 elsif Chars (Arg1) = Name_Subunit_File_Name then
805 Typ := 'u';
806
807 elsif Chars (Arg1) = Name_Unit_Name then
808 Error_Msg_N
809 ("Unit_Name parameter for pragma% must be an identifier",
810 Arg1);
811 raise Error_Resync;
812
813 else
814 Error_Msg_N
815 ("pragma% argument has incorrect identifier", Arg1);
816 raise Error_Resync;
817 end if;
818
819 Pat := Get_String_Argument (Arg1);
820
821 -- Check pattern has exactly one asterisk
822
823 Nast := 0;
824 for J in Pat'Range loop
825 if Pat (J) = '*' then
826 Nast := Nast + 1;
827 end if;
828 end loop;
829
830 if Nast /= 1 then
831 Error_Msg_N
832 ("file name pattern must have exactly one * character",
833 Arg1);
834 return Pragma_Node;
835 end if;
836
837 -- Set defaults for Casing and Dot_Separator parameters
838
839 Cas := All_Lower_Case;
840 Dot := new String'(".");
841
842 -- Process second and third arguments if present
843
844 if Arg_Count > 1 then
845 if Chars (Arg2) = Name_Casing then
846 Process_Casing (Arg2);
847
848 if Arg_Count = 3 then
849 Process_Dot_Replacement (Arg3);
850 end if;
851
852 else
853 Process_Dot_Replacement (Arg2);
854
855 if Arg_Count = 3 then
856 Process_Casing (Arg3);
857 end if;
858 end if;
859 end if;
860
861 Set_File_Name_Pattern (Pat, Typ, Dot, Cas);
862 end if;
863 end Source_File_Name;
864
865 -----------------------------
866 -- Source_Reference (GNAT) --
867 -----------------------------
868
869 -- pragma Source_Reference
870 -- (INTEGER_LITERAL [, STRING_LITERAL] );
871
872 -- Processing for this pragma must be done at parse time, since error
873 -- messages needing the proper line numbers can be generated in parse
874 -- only mode with semantic checking turned off, and indeed we usually
875 -- turn off semantic checking anyway if any parse errors are found.
876
877 when Pragma_Source_Reference => Source_Reference : declare
878 Fname : File_Name_Type;
879
880 begin
881 if Arg_Count /= 1 then
882 Check_Arg_Count (2);
883 Check_No_Identifier (Arg2);
884 end if;
885
886 -- Check that this is first line of file. We skip this test if
887 -- we are in syntax check only mode, since we may be dealing with
888 -- multiple compilation units.
889
890 if Get_Physical_Line_Number (Pragma_Sloc) /= 1
891 and then Num_SRef_Pragmas (Current_Source_File) = 0
892 and then Operating_Mode /= Check_Syntax
893 then
894 Error_Msg -- CODEFIX
895 ("first % pragma must be first line of file", Pragma_Sloc);
896 raise Error_Resync;
897 end if;
898
899 Check_No_Identifier (Arg1);
900
901 if Arg_Count = 1 then
902 if Num_SRef_Pragmas (Current_Source_File) = 0 then
903 Error_Msg
904 ("file name required for first % pragma in file",
905 Pragma_Sloc);
906 raise Error_Resync;
907 else
908 Fname := No_File;
909 end if;
910
911 -- File name present
912
913 else
914 Check_Arg_Is_String_Literal (Arg2);
915 String_To_Name_Buffer (Strval (Expression (Arg2)));
916 Fname := Name_Find;
917
918 if Num_SRef_Pragmas (Current_Source_File) > 0 then
919 if Fname /= Full_Ref_Name (Current_Source_File) then
920 Error_Msg
921 ("file name must be same in all % pragmas", Pragma_Sloc);
922 raise Error_Resync;
923 end if;
924 end if;
925 end if;
926
927 if Nkind (Expression (Arg1)) /= N_Integer_Literal then
928 Error_Msg
929 ("argument for pragma% must be integer literal",
930 Sloc (Expression (Arg1)));
931 raise Error_Resync;
932
933 -- OK, this source reference pragma is effective, however, we
934 -- ignore it if it is not in the first unit in the multiple unit
935 -- case. This is because the only purpose in this case is to
936 -- provide source pragmas for subsequent use by gnatchop.
937
938 else
939 if Num_Library_Units = 1 then
940 Register_Source_Ref_Pragma
941 (Fname,
942 Strip_Directory (Fname),
943 UI_To_Int (Intval (Expression (Arg1))),
944 Get_Physical_Line_Number (Pragma_Sloc) + 1);
945 end if;
946 end if;
947 end Source_Reference;
948
949 -------------------------
950 -- Style_Checks (GNAT) --
951 -------------------------
952
953 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
954
955 -- This is processed by the parser since some of the style
956 -- checks take place during source scanning and parsing.
957
958 when Pragma_Style_Checks => Style_Checks : declare
959 A : Node_Id;
960 S : String_Id;
961 C : Char_Code;
962 OK : Boolean := True;
963
964 begin
965 -- Two argument case is only for semantics
966
967 if Arg_Count = 2 then
968 null;
969
970 else
971 Check_Arg_Count (1);
972 Check_No_Identifier (Arg1);
973 A := Expression (Arg1);
974
975 if Nkind (A) = N_String_Literal then
976 S := Strval (A);
977
978 declare
979 Slen : constant Natural := Natural (String_Length (S));
980 Options : String (1 .. Slen);
981 J : Positive;
982 Ptr : Positive;
983
984 begin
985 J := 1;
986 loop
987 C := Get_String_Char (S, Pos (J));
988
989 if not In_Character_Range (C) then
990 OK := False;
991 Ptr := J;
992 exit;
993
994 else
995 Options (J) := Get_Character (C);
996 end if;
997
998 if J = Slen then
999 if not Ignore_Style_Checks_Pragmas then
1000 Set_Style_Check_Options (Options, OK, Ptr);
1001 end if;
1002
1003 exit;
1004
1005 else
1006 J := J + 1;
1007 end if;
1008 end loop;
1009
1010 if not OK then
1011 Error_Msg
1012 (Style_Msg_Buf (1 .. Style_Msg_Len),
1013 Sloc (Expression (Arg1)) + Source_Ptr (Ptr));
1014 raise Error_Resync;
1015 end if;
1016 end;
1017
1018 elsif Nkind (A) /= N_Identifier then
1019 OK := False;
1020
1021 elsif Chars (A) = Name_All_Checks then
1022 if not Ignore_Style_Checks_Pragmas then
1023 if GNAT_Mode then
1024 Stylesw.Set_GNAT_Style_Check_Options;
1025 else
1026 Stylesw.Set_Default_Style_Check_Options;
1027 end if;
1028 end if;
1029
1030 elsif Chars (A) = Name_On then
1031 if not Ignore_Style_Checks_Pragmas then
1032 Style_Check := True;
1033 end if;
1034
1035 elsif Chars (A) = Name_Off then
1036 if not Ignore_Style_Checks_Pragmas then
1037 Style_Check := False;
1038 end if;
1039
1040 else
1041 OK := False;
1042 end if;
1043
1044 if not OK then
1045 Error_Msg ("incorrect argument for pragma%", Sloc (A));
1046 raise Error_Resync;
1047 end if;
1048 end if;
1049 end Style_Checks;
1050
1051 -------------------------
1052 -- Suppress_All (GNAT) --
1053 -------------------------
1054
1055 -- pragma Suppress_All
1056
1057 -- This is a rather odd pragma, because other compilers allow it in
1058 -- strange places. DEC allows it at the end of units, and Rational
1059 -- allows it as a program unit pragma, when it would be more natural
1060 -- if it were a configuration pragma.
1061
1062 -- Since the reason we provide this pragma is for compatibility with
1063 -- these other compilers, we want to accommodate these strange placement
1064 -- rules, and the easiest thing is simply to allow it anywhere in a
1065 -- unit. If this pragma appears anywhere within a unit, then the effect
1066 -- is as though a pragma Suppress (All_Checks) had appeared as the first
1067 -- line of the current file, i.e. as the first configuration pragma in
1068 -- the current unit.
1069
1070 -- To get this effect, we set the flag Has_Pragma_Suppress_All in the
1071 -- compilation unit node for the current source file then in the last
1072 -- stage of parsing a file, if this flag is set, we materialize the
1073 -- Suppress (All_Checks) pragma, marked as not coming from Source.
1074
1075 when Pragma_Suppress_All =>
1076 Set_Has_Pragma_Suppress_All (Cunit (Current_Source_Unit));
1077
1078 ---------------------
1079 -- Warnings (GNAT) --
1080 ---------------------
1081
1082 -- pragma Warnings ([TOOL_NAME,] DETAILS [, REASON]);
1083
1084 -- DETAILS ::= On | Off
1085 -- DETAILS ::= On | Off, local_NAME
1086 -- DETAILS ::= static_string_EXPRESSION
1087 -- DETAILS ::= On | Off, static_string_EXPRESSION
1088
1089 -- TOOL_NAME ::= GNAT | GNATProve
1090
1091 -- REASON ::= Reason => STRING_LITERAL {& STRING_LITERAL}
1092
1093 -- Note: If the first argument matches an allowed tool name, it is
1094 -- always considered to be a tool name, even if there is a string
1095 -- variable of that name.
1096
1097 -- The one argument ON/OFF case is processed by the parser, since it may
1098 -- control parser warnings as well as semantic warnings, and in any case
1099 -- we want to be absolutely sure that the range in the warnings table is
1100 -- set well before any semantic analysis is performed. Note that we
1101 -- ignore this pragma if debug flag -gnatd.i is set.
1102
1103 -- Also note that the "one argument" case may have two or three
1104 -- arguments if the first one is a tool name, and/or the last one is a
1105 -- reason argument.
1106
1107 when Pragma_Warnings => Warnings : declare
1108 function First_Arg_Is_Matching_Tool_Name return Boolean;
1109 -- Returns True if the first argument is a tool name matching the
1110 -- current tool being run.
1111
1112 function Last_Arg return Node_Id;
1113 -- Returns the last argument
1114
1115 function Last_Arg_Is_Reason return Boolean;
1116 -- Returns True if the last argument is a reason argument
1117
1118 function Get_Reason return String_Id;
1119 -- Analyzes Reason argument and returns corresponding String_Id
1120 -- value, or null if there is no Reason argument, or if the
1121 -- argument is not of the required form.
1122
1123 -------------------------------------
1124 -- First_Arg_Is_Matching_Tool_Name --
1125 -------------------------------------
1126
1127 function First_Arg_Is_Matching_Tool_Name return Boolean is
1128 begin
1129 return Nkind (Arg1) = N_Identifier
1130
1131 -- Return True if the tool name is GNAT, and we're not in
1132 -- GNATprove or CodePeer or ASIS mode...
1133
1134 and then ((Chars (Arg1) = Name_Gnat
1135 and then not
1136 (CodePeer_Mode or GNATprove_Mode or ASIS_Mode))
1137
1138 -- or if the tool name is GNATprove, and we're in GNATprove
1139 -- mode.
1140
1141 or else
1142 (Chars (Arg1) = Name_Gnatprove
1143 and then GNATprove_Mode));
1144 end First_Arg_Is_Matching_Tool_Name;
1145
1146 ----------------
1147 -- Get_Reason --
1148 ----------------
1149
1150 function Get_Reason return String_Id is
1151 Arg : constant Node_Id := Last_Arg;
1152 begin
1153 if Last_Arg_Is_Reason then
1154 Start_String;
1155 Get_Reason_String (Expression (Arg));
1156 return End_String;
1157 else
1158 return Null_String_Id;
1159 end if;
1160 end Get_Reason;
1161
1162 --------------
1163 -- Last_Arg --
1164 --------------
1165
1166 function Last_Arg return Node_Id is
1167 Last_Arg : Node_Id;
1168
1169 begin
1170 if Arg_Count = 1 then
1171 Last_Arg := Arg1;
1172 elsif Arg_Count = 2 then
1173 Last_Arg := Arg2;
1174 elsif Arg_Count = 3 then
1175 Last_Arg := Arg3;
1176 elsif Arg_Count = 4 then
1177 Last_Arg := Next (Arg3);
1178
1179 -- Illegal case, error issued in semantic analysis
1180
1181 else
1182 Last_Arg := Empty;
1183 end if;
1184
1185 return Last_Arg;
1186 end Last_Arg;
1187
1188 ------------------------
1189 -- Last_Arg_Is_Reason --
1190 ------------------------
1191
1192 function Last_Arg_Is_Reason return Boolean is
1193 Arg : constant Node_Id := Last_Arg;
1194 begin
1195 return Nkind (Arg) in N_Has_Chars
1196 and then Chars (Arg) = Name_Reason;
1197 end Last_Arg_Is_Reason;
1198
1199 The_Arg : Node_Id; -- On/Off argument
1200 Argx : Node_Id;
1201
1202 -- Start of processing for Warnings
1203
1204 begin
1205 if not Debug_Flag_Dot_I
1206 and then (Arg_Count = 1
1207 or else (Arg_Count = 2
1208 and then (First_Arg_Is_Matching_Tool_Name
1209 or else
1210 Last_Arg_Is_Reason))
1211 or else (Arg_Count = 3
1212 and then First_Arg_Is_Matching_Tool_Name
1213 and then Last_Arg_Is_Reason))
1214 then
1215 if First_Arg_Is_Matching_Tool_Name then
1216 The_Arg := Arg2;
1217 else
1218 The_Arg := Arg1;
1219 end if;
1220
1221 Check_No_Identifier (The_Arg);
1222 Argx := Expression (The_Arg);
1223
1224 if Nkind (Argx) = N_Identifier then
1225 if Chars (Argx) = Name_On then
1226 Set_Warnings_Mode_On (Pragma_Sloc);
1227 elsif Chars (Argx) = Name_Off then
1228 Set_Warnings_Mode_Off (Pragma_Sloc, Get_Reason);
1229 end if;
1230 end if;
1231 end if;
1232 end Warnings;
1233
1234 -----------------------------
1235 -- Wide_Character_Encoding --
1236 -----------------------------
1237
1238 -- pragma Wide_Character_Encoding (IDENTIFIER | CHARACTER_LITERAL);
1239
1240 -- This is processed by the parser, since the scanner is affected
1241
1242 when Pragma_Wide_Character_Encoding => Wide_Character_Encoding : declare
1243 A : Node_Id;
1244
1245 begin
1246 Check_Arg_Count (1);
1247 Check_No_Identifier (Arg1);
1248 A := Expression (Arg1);
1249
1250 if Nkind (A) = N_Identifier then
1251 Get_Name_String (Chars (A));
1252 Wide_Character_Encoding_Method :=
1253 Get_WC_Encoding_Method (Name_Buffer (1 .. Name_Len));
1254
1255 elsif Nkind (A) = N_Character_Literal then
1256 declare
1257 R : constant Char_Code :=
1258 Char_Code (UI_To_Int (Char_Literal_Value (A)));
1259 begin
1260 if In_Character_Range (R) then
1261 Wide_Character_Encoding_Method :=
1262 Get_WC_Encoding_Method (Get_Character (R));
1263 else
1264 raise Constraint_Error;
1265 end if;
1266 end;
1267
1268 else
1269 raise Constraint_Error;
1270 end if;
1271
1272 Upper_Half_Encoding :=
1273 Wide_Character_Encoding_Method in
1274 WC_Upper_Half_Encoding_Method;
1275
1276 exception
1277 when Constraint_Error =>
1278 Error_Msg_N ("invalid argument for pragma%", Arg1);
1279 end Wide_Character_Encoding;
1280
1281 -----------------------
1282 -- All Other Pragmas --
1283 -----------------------
1284
1285 -- For all other pragmas, checking and processing is handled
1286 -- entirely in Sem_Prag, and no further checking is done by Par.
1287
1288 when Pragma_Abort_Defer |
1289 Pragma_Abstract_State |
1290 Pragma_Async_Readers |
1291 Pragma_Async_Writers |
1292 Pragma_Assertion_Policy |
1293 Pragma_Assume |
1294 Pragma_Assume_No_Invalid_Values |
1295 Pragma_All_Calls_Remote |
1296 Pragma_Allow_Integer_Address |
1297 Pragma_Annotate |
1298 Pragma_Assert |
1299 Pragma_Assert_And_Cut |
1300 Pragma_Asynchronous |
1301 Pragma_Atomic |
1302 Pragma_Atomic_Components |
1303 Pragma_Attach_Handler |
1304 Pragma_Attribute_Definition |
1305 Pragma_Check |
1306 Pragma_Check_Float_Overflow |
1307 Pragma_Check_Name |
1308 Pragma_Check_Policy |
1309 Pragma_Compile_Time_Error |
1310 Pragma_Compile_Time_Warning |
1311 Pragma_Constant_After_Elaboration |
1312 Pragma_Contract_Cases |
1313 Pragma_Convention_Identifier |
1314 Pragma_CPP_Class |
1315 Pragma_CPP_Constructor |
1316 Pragma_CPP_Virtual |
1317 Pragma_CPP_Vtable |
1318 Pragma_CPU |
1319 Pragma_C_Pass_By_Copy |
1320 Pragma_Comment |
1321 Pragma_Common_Object |
1322 Pragma_Complete_Representation |
1323 Pragma_Complex_Representation |
1324 Pragma_Component_Alignment |
1325 Pragma_Controlled |
1326 Pragma_Convention |
1327 Pragma_Debug_Policy |
1328 Pragma_Depends |
1329 Pragma_Detect_Blocking |
1330 Pragma_Default_Initial_Condition |
1331 Pragma_Default_Scalar_Storage_Order |
1332 Pragma_Default_Storage_Pool |
1333 Pragma_Disable_Atomic_Synchronization |
1334 Pragma_Discard_Names |
1335 Pragma_Dispatching_Domain |
1336 Pragma_Effective_Reads |
1337 Pragma_Effective_Writes |
1338 Pragma_Eliminate |
1339 Pragma_Elaborate |
1340 Pragma_Elaborate_All |
1341 Pragma_Elaborate_Body |
1342 Pragma_Elaboration_Checks |
1343 Pragma_Enable_Atomic_Synchronization |
1344 Pragma_Export |
1345 Pragma_Export_Function |
1346 Pragma_Export_Object |
1347 Pragma_Export_Procedure |
1348 Pragma_Export_Value |
1349 Pragma_Export_Valued_Procedure |
1350 Pragma_Extend_System |
1351 Pragma_Extensions_Visible |
1352 Pragma_External |
1353 Pragma_External_Name_Casing |
1354 Pragma_Favor_Top_Level |
1355 Pragma_Fast_Math |
1356 Pragma_Finalize_Storage_Only |
1357 Pragma_Ghost |
1358 Pragma_Global |
1359 Pragma_Ident |
1360 Pragma_Implementation_Defined |
1361 Pragma_Implemented |
1362 Pragma_Implicit_Packing |
1363 Pragma_Import |
1364 Pragma_Import_Function |
1365 Pragma_Import_Object |
1366 Pragma_Import_Procedure |
1367 Pragma_Import_Valued_Procedure |
1368 Pragma_Independent |
1369 Pragma_Independent_Components |
1370 Pragma_Initial_Condition |
1371 Pragma_Initialize_Scalars |
1372 Pragma_Initializes |
1373 Pragma_Inline |
1374 Pragma_Inline_Always |
1375 Pragma_Inline_Generic |
1376 Pragma_Inspection_Point |
1377 Pragma_Interface |
1378 Pragma_Interface_Name |
1379 Pragma_Interrupt_Handler |
1380 Pragma_Interrupt_State |
1381 Pragma_Interrupt_Priority |
1382 Pragma_Invariant |
1383 Pragma_Keep_Names |
1384 Pragma_License |
1385 Pragma_Link_With |
1386 Pragma_Linker_Alias |
1387 Pragma_Linker_Constructor |
1388 Pragma_Linker_Destructor |
1389 Pragma_Linker_Options |
1390 Pragma_Linker_Section |
1391 Pragma_Lock_Free |
1392 Pragma_Locking_Policy |
1393 Pragma_Loop_Invariant |
1394 Pragma_Loop_Optimize |
1395 Pragma_Loop_Variant |
1396 Pragma_Machine_Attribute |
1397 Pragma_Main |
1398 Pragma_Main_Storage |
1399 Pragma_Memory_Size |
1400 Pragma_No_Body |
1401 Pragma_No_Elaboration_Code_All |
1402 Pragma_No_Inline |
1403 Pragma_No_Return |
1404 Pragma_No_Run_Time |
1405 Pragma_No_Strict_Aliasing |
1406 Pragma_No_Tagged_Streams |
1407 Pragma_Normalize_Scalars |
1408 Pragma_Obsolescent |
1409 Pragma_Ordered |
1410 Pragma_Optimize |
1411 Pragma_Optimize_Alignment |
1412 Pragma_Overflow_Mode |
1413 Pragma_Overriding_Renamings |
1414 Pragma_Pack |
1415 Pragma_Part_Of |
1416 Pragma_Partition_Elaboration_Policy |
1417 Pragma_Passive |
1418 Pragma_Preelaborable_Initialization |
1419 Pragma_Polling |
1420 Pragma_Prefix_Exception_Messages |
1421 Pragma_Persistent_BSS |
1422 Pragma_Post |
1423 Pragma_Postcondition |
1424 Pragma_Post_Class |
1425 Pragma_Pre |
1426 Pragma_Precondition |
1427 Pragma_Predicate |
1428 Pragma_Predicate_Failure |
1429 Pragma_Preelaborate |
1430 Pragma_Pre_Class |
1431 Pragma_Priority |
1432 Pragma_Priority_Specific_Dispatching |
1433 Pragma_Profile |
1434 Pragma_Profile_Warnings |
1435 Pragma_Propagate_Exceptions |
1436 Pragma_Provide_Shift_Operators |
1437 Pragma_Psect_Object |
1438 Pragma_Pure |
1439 Pragma_Pure_Function |
1440 Pragma_Queuing_Policy |
1441 Pragma_Refined_Depends |
1442 Pragma_Refined_Global |
1443 Pragma_Refined_Post |
1444 Pragma_Refined_State |
1445 Pragma_Relative_Deadline |
1446 Pragma_Remote_Access_Type |
1447 Pragma_Remote_Call_Interface |
1448 Pragma_Remote_Types |
1449 Pragma_Restricted_Run_Time |
1450 Pragma_Rational |
1451 Pragma_Ravenscar |
1452 Pragma_Reviewable |
1453 Pragma_Share_Generic |
1454 Pragma_Shared |
1455 Pragma_Shared_Passive |
1456 Pragma_Short_Circuit_And_Or |
1457 Pragma_Short_Descriptors |
1458 Pragma_Simple_Storage_Pool_Type |
1459 Pragma_SPARK_Mode |
1460 Pragma_Storage_Size |
1461 Pragma_Storage_Unit |
1462 Pragma_Static_Elaboration_Desired |
1463 Pragma_Stream_Convert |
1464 Pragma_Subtitle |
1465 Pragma_Suppress |
1466 Pragma_Suppress_Debug_Info |
1467 Pragma_Suppress_Exception_Locations |
1468 Pragma_Suppress_Initialization |
1469 Pragma_System_Name |
1470 Pragma_Task_Dispatching_Policy |
1471 Pragma_Task_Info |
1472 Pragma_Task_Name |
1473 Pragma_Task_Storage |
1474 Pragma_Test_Case |
1475 Pragma_Thread_Local_Storage |
1476 Pragma_Time_Slice |
1477 Pragma_Title |
1478 Pragma_Type_Invariant |
1479 Pragma_Type_Invariant_Class |
1480 Pragma_Unchecked_Union |
1481 Pragma_Unevaluated_Use_Of_Old |
1482 Pragma_Unimplemented_Unit |
1483 Pragma_Universal_Aliasing |
1484 Pragma_Universal_Data |
1485 Pragma_Unmodified |
1486 Pragma_Unreferenced |
1487 Pragma_Unreferenced_Objects |
1488 Pragma_Unreserve_All_Interrupts |
1489 Pragma_Unsuppress |
1490 Pragma_Unused |
1491 Pragma_Use_VADS_Size |
1492 Pragma_Volatile |
1493 Pragma_Volatile_Components |
1494 Pragma_Volatile_Full_Access |
1495 Pragma_Volatile_Function |
1496 Pragma_Warning_As_Error |
1497 Pragma_Weak_External |
1498 Pragma_Validity_Checks =>
1499 null;
1500
1501 --------------------
1502 -- Unknown_Pragma --
1503 --------------------
1504
1505 -- Should be impossible, since we excluded this case earlier on
1506
1507 when Unknown_Pragma =>
1508 raise Program_Error;
1509
1510 end case;
1511
1512 return Pragma_Node;
1513
1514 --------------------
1515 -- Error Handling --
1516 --------------------
1517
1518 exception
1519 when Error_Resync =>
1520 return Error;
1521
1522 end Prag;