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libgo: update to Go1.10beta1
[official-gcc.git] / gcc / ada / par-prag.adb
blob5ea129ad0b7dcf804ffdccdeb2c0dfbd97ad207f
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) 1992-2017, 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_Unmapped (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
261 | Name_SPARK_05
262 =>
263 Set_Restriction (SPARK_05, Pragma_Node);
264 Restriction_Warnings (SPARK_05) :=
265 Prag_Id = Pragma_Restriction_Warnings;
266
267 when others =>
268 null;
269 end case;
270
271 elsif Id = Name_No_Dependence then
272 Set_Restriction_No_Dependence
273 (Unit => Expr,
274 Warn => Prag_Id = Pragma_Restriction_Warnings
275 or else Treat_Restrictions_As_Warnings);
276 end if;
277
278 Next (Arg);
279 end loop;
280 end Process_Restrictions_Or_Restriction_Warnings;
281
282 -- Start of processing for Prag
283
284 begin
285 Error_Msg_Name_1 := Prag_Name;
286
287 -- Ignore unrecognized pragma. We let Sem post the warning for this, since
288 -- it is a semantic error, not a syntactic one (we have already checked
289 -- the syntax for the unrecognized pragma as required by (RM 2.8(11)).
290
291 if Prag_Id = Unknown_Pragma then
292 return Pragma_Node;
293 end if;
294
295 -- Ignore pragma if Ignore_Pragma applies. Also ignore pragma
296 -- Default_Scalar_Storage_Order if the -gnatI switch was given.
297
298 if Should_Ignore_Pragma_Par (Prag_Name)
299 or else (Prag_Id = Pragma_Default_Scalar_Storage_Order
300 and then Ignore_Rep_Clauses)
301 then
302 return Pragma_Node;
303 end if;
304
305 -- Count number of arguments. This loop also checks if any of the arguments
306 -- are Error, indicating a syntax error as they were parsed. If so, we
307 -- simply return, because we get into trouble with cascaded errors if we
308 -- try to perform our error checks on junk arguments.
309
310 Arg_Count := 0;
311
312 if Present (Pragma_Argument_Associations (Pragma_Node)) then
313 Arg_Node := Arg1;
314 while Arg_Node /= Empty loop
315 Arg_Count := Arg_Count + 1;
316
317 if Expression (Arg_Node) = Error then
318 return Error;
319 end if;
320
321 Next (Arg_Node);
322 end loop;
323 end if;
324
325 -- Remaining processing is pragma dependent
326
327 case Prag_Id is
328
329 -- Ada version pragmas must be processed at parse time, because we want
330 -- to set the Ada version properly at parse time to recognize the
331 -- appropriate Ada version syntax. However, pragma Ada_2005 and higher
332 -- have an optional argument; it is only the zero argument form that
333 -- must be processed at parse time.
334
335 ------------
336 -- Ada_83 --
337 ------------
338
339 when Pragma_Ada_83 =>
340 if not Latest_Ada_Only then
341 Ada_Version := Ada_83;
342 Ada_Version_Explicit := Ada_83;
343 Ada_Version_Pragma := Pragma_Node;
344 end if;
345
346 ------------
347 -- Ada_95 --
348 ------------
349
350 when Pragma_Ada_95 =>
351 if not Latest_Ada_Only then
352 Ada_Version := Ada_95;
353 Ada_Version_Explicit := Ada_95;
354 Ada_Version_Pragma := Pragma_Node;
355 end if;
356
357 ---------------------
358 -- Ada_05/Ada_2005 --
359 ---------------------
360
361 when Pragma_Ada_05
362 | Pragma_Ada_2005
363 =>
364 if Arg_Count = 0 and not Latest_Ada_Only then
365 Ada_Version := Ada_2005;
366 Ada_Version_Explicit := Ada_2005;
367 Ada_Version_Pragma := Pragma_Node;
368 end if;
369
370 ---------------------
371 -- Ada_12/Ada_2012 --
372 ---------------------
373
374 when Pragma_Ada_12
375 | Pragma_Ada_2012
376 =>
377 if Arg_Count = 0 then
378 Ada_Version := Ada_2012;
379 Ada_Version_Explicit := Ada_2012;
380 Ada_Version_Pragma := Pragma_Node;
381 end if;
382
383 --------------
384 -- Ada_2020 --
385 --------------
386
387 when Pragma_Ada_2020 =>
388 if Arg_Count = 0 then
389 Ada_Version := Ada_2020;
390 Ada_Version_Explicit := Ada_2020;
391 Ada_Version_Pragma := Pragma_Node;
392 end if;
393
394 ---------------------------
395 -- Compiler_Unit_Warning --
396 ---------------------------
397
398 -- This pragma must be processed at parse time, since the resulting
399 -- status may be tested during the parsing of the program.
400
401 when Pragma_Compiler_Unit
402 | Pragma_Compiler_Unit_Warning
403 =>
404 Check_Arg_Count (0);
405
406 -- Only recognized in main unit
407
408 if Current_Source_Unit = Main_Unit then
409 Compiler_Unit := True;
410 end if;
411
412 -----------
413 -- Debug --
414 -----------
415
416 -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
417
418 when Pragma_Debug =>
419 Check_No_Identifier (Arg1);
420
421 if Arg_Count = 2 then
422 Check_No_Identifier (Arg2);
423 else
424 Check_Arg_Count (1);
425 end if;
426
427 -------------------------------
428 -- Extensions_Allowed (GNAT) --
429 -------------------------------
430
431 -- pragma Extensions_Allowed (Off | On)
432
433 -- The processing for pragma Extensions_Allowed must be done at
434 -- parse time, since extensions mode may affect what is accepted.
435
436 when Pragma_Extensions_Allowed =>
437 Check_Arg_Count (1);
438 Check_No_Identifier (Arg1);
439 Check_Arg_Is_On_Or_Off (Arg1);
440
441 if Chars (Expression (Arg1)) = Name_On then
442 Extensions_Allowed := True;
443 Ada_Version := Ada_2012;
444 else
445 Extensions_Allowed := False;
446 Ada_Version := Ada_Version_Explicit;
447 end if;
448
449 -------------------
450 -- Ignore_Pragma --
451 -------------------
452
453 -- Processing for this pragma must be done at parse time, since we want
454 -- be able to ignore pragmas that are otherwise processed at parse time.
455
456 when Pragma_Ignore_Pragma => Ignore_Pragma : declare
457 A : Node_Id;
458
459 begin
460 Check_Arg_Count (1);
461 Check_No_Identifier (Arg1);
462 A := Expression (Arg1);
463
464 if Nkind (A) /= N_Identifier then
465 Error_Msg ("incorrect argument for pragma %", Sloc (A));
466 else
467 Set_Name_Table_Boolean3 (Chars (A), True);
468 end if;
469 end Ignore_Pragma;
470
471 ----------------
472 -- List (2.8) --
473 ----------------
474
475 -- pragma List (Off | On)
476
477 -- The processing for pragma List must be done at parse time, since a
478 -- listing can be generated in parse only mode.
479
480 when Pragma_List =>
481 Check_Arg_Count (1);
482 Check_No_Identifier (Arg1);
483 Check_Arg_Is_On_Or_Off (Arg1);
484
485 -- We unconditionally make a List_On entry for the pragma, so that
486 -- in the List (Off) case, the pragma will print even in a region
487 -- of code with listing turned off (this is required).
488
489 Add_List_Pragma_Entry (List_On, Sloc (Pragma_Node));
490
491 -- Now generate the list off entry for pragma List (Off)
492
493 if Chars (Expression (Arg1)) = Name_Off then
494 Add_List_Pragma_Entry (List_Off, Semi);
495 end if;
496
497 ----------------
498 -- Page (2.8) --
499 ----------------
500
501 -- pragma Page;
502
503 -- Processing for this pragma must be done at parse time, since a
504 -- listing can be generated in parse only mode with semantics off.
505
506 when Pragma_Page =>
507 Check_Arg_Count (0);
508 Add_List_Pragma_Entry (Page, Semi);
509
510 ------------------
511 -- Restrictions --
512 ------------------
513
514 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
515
516 -- RESTRICTION ::=
517 -- restriction_IDENTIFIER
518 -- | restriction_parameter_IDENTIFIER => EXPRESSION
519
520 -- We process the case of No_Obsolescent_Features, since this has
521 -- a syntactic effect that we need to detect at parse time (the use
522 -- of replacement characters such as colon for pound sign).
523
524 when Pragma_Restrictions =>
525 Process_Restrictions_Or_Restriction_Warnings;
526
527 --------------------------
528 -- Restriction_Warnings --
529 --------------------------
530
531 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
532
533 -- RESTRICTION ::=
534 -- restriction_IDENTIFIER
535 -- | restriction_parameter_IDENTIFIER => EXPRESSION
536
537 -- See above comment for pragma Restrictions
538
539 when Pragma_Restriction_Warnings =>
540 Process_Restrictions_Or_Restriction_Warnings;
541
542 ----------------------------------------------------------
543 -- Source_File_Name and Source_File_Name_Project (GNAT) --
544 ----------------------------------------------------------
545
546 -- These two pragmas have the same syntax and semantics.
547 -- There are five forms of these pragmas:
548
549 -- pragma Source_File_Name[_Project] (
550 -- [UNIT_NAME =>] unit_NAME,
551 -- BODY_FILE_NAME => STRING_LITERAL
552 -- [, [INDEX =>] INTEGER_LITERAL]);
553
554 -- pragma Source_File_Name[_Project] (
555 -- [UNIT_NAME =>] unit_NAME,
556 -- SPEC_FILE_NAME => STRING_LITERAL
557 -- [, [INDEX =>] INTEGER_LITERAL]);
558
559 -- pragma Source_File_Name[_Project] (
560 -- BODY_FILE_NAME => STRING_LITERAL
561 -- [, DOT_REPLACEMENT => STRING_LITERAL]
562 -- [, CASING => CASING_SPEC]);
563
564 -- pragma Source_File_Name[_Project] (
565 -- SPEC_FILE_NAME => STRING_LITERAL
566 -- [, DOT_REPLACEMENT => STRING_LITERAL]
567 -- [, CASING => CASING_SPEC]);
568
569 -- pragma Source_File_Name[_Project] (
570 -- SUBUNIT_FILE_NAME => STRING_LITERAL
571 -- [, DOT_REPLACEMENT => STRING_LITERAL]
572 -- [, CASING => CASING_SPEC]);
573
574 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
575
576 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
577 -- Source_File_Name (SFN), however their usage is exclusive:
578 -- SFN can only be used when no project file is used, while
579 -- SFNP can only be used when a project file is used.
580
581 -- The Project Manager produces a configuration pragmas file that
582 -- is communicated to the compiler with -gnatec switch. This file
583 -- contains only SFNP pragmas (at least two for the default naming
584 -- scheme. As this configuration pragmas file is always the first
585 -- processed by the compiler, it prevents the use of pragmas SFN in
586 -- other config files when a project file is in use.
587
588 -- Note: we process this during parsing, since we need to have the
589 -- source file names set well before the semantic analysis starts,
590 -- since we load the spec and with'ed packages before analysis.
591
592 when Pragma_Source_File_Name
593 | Pragma_Source_File_Name_Project
594 =>
595 Source_File_Name : declare
596 Unam : Unit_Name_Type;
597 Expr1 : Node_Id;
598 Pat : String_Ptr;
599 Typ : Character;
600 Dot : String_Ptr;
601 Cas : Casing_Type;
602 Nast : Nat;
603 Expr : Node_Id;
604 Index : Nat;
605
606 function Get_Fname (Arg : Node_Id) return File_Name_Type;
607 -- Process file name from unit name form of pragma
608
609 function Get_String_Argument (Arg : Node_Id) return String_Ptr;
610 -- Process string literal value from argument
611
612 procedure Process_Casing (Arg : Node_Id);
613 -- Process Casing argument of pattern form of pragma
614
615 procedure Process_Dot_Replacement (Arg : Node_Id);
616 -- Process Dot_Replacement argument of pattern form of pragma
617
618 ---------------
619 -- Get_Fname --
620 ---------------
621
622 function Get_Fname (Arg : Node_Id) return File_Name_Type is
623 begin
624 String_To_Name_Buffer (Strval (Expression (Arg)));
625
626 for J in 1 .. Name_Len loop
627 if Is_Directory_Separator (Name_Buffer (J)) then
628 Error_Msg
629 ("directory separator character not allowed",
630 Sloc (Expression (Arg)) + Source_Ptr (J));
631 end if;
632 end loop;
633
634 return Name_Find;
635 end Get_Fname;
636
637 -------------------------
638 -- Get_String_Argument --
639 -------------------------
640
641 function Get_String_Argument (Arg : Node_Id) return String_Ptr is
642 Str : String_Id;
643
644 begin
645 if Nkind (Expression (Arg)) /= N_String_Literal
646 and then
647 Nkind (Expression (Arg)) /= N_Operator_Symbol
648 then
649 Error_Msg_N
650 ("argument for pragma% must be string literal", Arg);
651 raise Error_Resync;
652 end if;
653
654 Str := Strval (Expression (Arg));
655
656 -- Check string has no wide chars
657
658 for J in 1 .. String_Length (Str) loop
659 if Get_String_Char (Str, J) > 255 then
660 Error_Msg
661 ("wide character not allowed in pattern for pragma%",
662 Sloc (Expression (Arg2)) + Text_Ptr (J) - 1);
663 end if;
664 end loop;
665
666 -- Acquire string
667
668 String_To_Name_Buffer (Str);
669 return new String'(Name_Buffer (1 .. Name_Len));
670 end Get_String_Argument;
671
672 --------------------
673 -- Process_Casing --
674 --------------------
675
676 procedure Process_Casing (Arg : Node_Id) is
677 Expr : constant Node_Id := Expression (Arg);
678
679 begin
680 Check_Required_Identifier (Arg, Name_Casing);
681
682 if Nkind (Expr) = N_Identifier then
683 if Chars (Expr) = Name_Lowercase then
684 Cas := All_Lower_Case;
685 return;
686 elsif Chars (Expr) = Name_Uppercase then
687 Cas := All_Upper_Case;
688 return;
689 elsif Chars (Expr) = Name_Mixedcase then
690 Cas := Mixed_Case;
691 return;
692 end if;
693 end if;
694
695 Error_Msg_N
696 ("Casing argument for pragma% must be " &
697 "one of Mixedcase, Lowercase, Uppercase",
698 Arg);
699 end Process_Casing;
700
701 -----------------------------
702 -- Process_Dot_Replacement --
703 -----------------------------
704
705 procedure Process_Dot_Replacement (Arg : Node_Id) is
706 begin
707 Check_Required_Identifier (Arg, Name_Dot_Replacement);
708 Dot := Get_String_Argument (Arg);
709 end Process_Dot_Replacement;
710
711 -- Start of processing for Source_File_Name and
712 -- Source_File_Name_Project pragmas.
713
714 begin
715 if Prag_Id = Pragma_Source_File_Name then
716 if Project_File_In_Use = In_Use then
717 Error_Msg
718 ("pragma Source_File_Name cannot be used " &
719 "with a project file", Pragma_Sloc);
720
721 else
722 Project_File_In_Use := Not_In_Use;
723 end if;
724
725 else
726 if Project_File_In_Use = Not_In_Use then
727 Error_Msg
728 ("pragma Source_File_Name_Project should only be used " &
729 "with a project file", Pragma_Sloc);
730 else
731 Project_File_In_Use := In_Use;
732 end if;
733 end if;
734
735 -- We permit from 1 to 3 arguments
736
737 if Arg_Count not in 1 .. 3 then
738 Check_Arg_Count (1);
739 end if;
740
741 Expr1 := Expression (Arg1);
742
743 -- If first argument is identifier or selected component, then
744 -- we have the specific file case of the Source_File_Name pragma,
745 -- and the first argument is a unit name.
746
747 if Nkind (Expr1) = N_Identifier
748 or else
749 (Nkind (Expr1) = N_Selected_Component
750 and then
751 Nkind (Selector_Name (Expr1)) = N_Identifier)
752 then
753 if Nkind (Expr1) = N_Identifier
754 and then Chars (Expr1) = Name_System
755 then
756 Error_Msg_N
757 ("pragma Source_File_Name may not be used for System",
758 Arg1);
759 return Error;
760 end if;
761
762 -- Process index argument if present
763
764 if Arg_Count = 3 then
765 Expr := Expression (Arg3);
766
767 if Nkind (Expr) /= N_Integer_Literal
768 or else not UI_Is_In_Int_Range (Intval (Expr))
769 or else Intval (Expr) > 999
770 or else Intval (Expr) <= 0
771 then
772 Error_Msg
773 ("pragma% index must be integer literal" &
774 " in range 1 .. 999", Sloc (Expr));
775 raise Error_Resync;
776 else
777 Index := UI_To_Int (Intval (Expr));
778 end if;
779
780 -- No index argument present
781
782 else
783 Check_Arg_Count (2);
784 Index := 0;
785 end if;
786
787 Check_Optional_Identifier (Arg1, Name_Unit_Name);
788 Unam := Get_Unit_Name (Expr1);
789
790 Check_Arg_Is_String_Literal (Arg2);
791
792 if Chars (Arg2) = Name_Spec_File_Name then
793 Set_File_Name
794 (Get_Spec_Name (Unam), Get_Fname (Arg2), Index);
795
796 elsif Chars (Arg2) = Name_Body_File_Name then
797 Set_File_Name
798 (Unam, Get_Fname (Arg2), Index);
799
800 else
801 Error_Msg_N
802 ("pragma% argument has incorrect identifier", Arg2);
803 return Pragma_Node;
804 end if;
805
806 -- If the first argument is not an identifier, then we must have
807 -- the pattern form of the pragma, and the first argument must be
808 -- the pattern string with an appropriate name.
809
810 else
811 if Chars (Arg1) = Name_Spec_File_Name then
812 Typ := 's';
813
814 elsif Chars (Arg1) = Name_Body_File_Name then
815 Typ := 'b';
816
817 elsif Chars (Arg1) = Name_Subunit_File_Name then
818 Typ := 'u';
819
820 elsif Chars (Arg1) = Name_Unit_Name then
821 Error_Msg_N
822 ("Unit_Name parameter for pragma% must be an identifier",
823 Arg1);
824 raise Error_Resync;
825
826 else
827 Error_Msg_N
828 ("pragma% argument has incorrect identifier", Arg1);
829 raise Error_Resync;
830 end if;
831
832 Pat := Get_String_Argument (Arg1);
833
834 -- Check pattern has exactly one asterisk
835
836 Nast := 0;
837 for J in Pat'Range loop
838 if Pat (J) = '*' then
839 Nast := Nast + 1;
840 end if;
841 end loop;
842
843 if Nast /= 1 then
844 Error_Msg_N
845 ("file name pattern must have exactly one * character",
846 Arg1);
847 return Pragma_Node;
848 end if;
849
850 -- Set defaults for Casing and Dot_Separator parameters
851
852 Cas := All_Lower_Case;
853 Dot := new String'(".");
854
855 -- Process second and third arguments if present
856
857 if Arg_Count > 1 then
858 if Chars (Arg2) = Name_Casing then
859 Process_Casing (Arg2);
860
861 if Arg_Count = 3 then
862 Process_Dot_Replacement (Arg3);
863 end if;
864
865 else
866 Process_Dot_Replacement (Arg2);
867
868 if Arg_Count = 3 then
869 Process_Casing (Arg3);
870 end if;
871 end if;
872 end if;
873
874 Set_File_Name_Pattern (Pat, Typ, Dot, Cas);
875 end if;
876 end Source_File_Name;
877
878 -----------------------------
879 -- Source_Reference (GNAT) --
880 -----------------------------
881
882 -- pragma Source_Reference
883 -- (INTEGER_LITERAL [, STRING_LITERAL] );
884
885 -- Processing for this pragma must be done at parse time, since error
886 -- messages needing the proper line numbers can be generated in parse
887 -- only mode with semantic checking turned off, and indeed we usually
888 -- turn off semantic checking anyway if any parse errors are found.
889
890 when Pragma_Source_Reference => Source_Reference : declare
891 Fname : File_Name_Type;
892
893 begin
894 if Arg_Count /= 1 then
895 Check_Arg_Count (2);
896 Check_No_Identifier (Arg2);
897 end if;
898
899 -- Check that this is first line of file. We skip this test if
900 -- we are in syntax check only mode, since we may be dealing with
901 -- multiple compilation units.
902
903 if Get_Physical_Line_Number (Pragma_Sloc) /= 1
904 and then Num_SRef_Pragmas (Current_Source_File) = 0
905 and then Operating_Mode /= Check_Syntax
906 then
907 Error_Msg -- CODEFIX
908 ("first % pragma must be first line of file", Pragma_Sloc);
909 raise Error_Resync;
910 end if;
911
912 Check_No_Identifier (Arg1);
913
914 if Arg_Count = 1 then
915 if Num_SRef_Pragmas (Current_Source_File) = 0 then
916 Error_Msg
917 ("file name required for first % pragma in file",
918 Pragma_Sloc);
919 raise Error_Resync;
920 else
921 Fname := No_File;
922 end if;
923
924 -- File name present
925
926 else
927 Check_Arg_Is_String_Literal (Arg2);
928 String_To_Name_Buffer (Strval (Expression (Arg2)));
929 Fname := Name_Find;
930
931 if Num_SRef_Pragmas (Current_Source_File) > 0 then
932 if Fname /= Full_Ref_Name (Current_Source_File) then
933 Error_Msg
934 ("file name must be same in all % pragmas", Pragma_Sloc);
935 raise Error_Resync;
936 end if;
937 end if;
938 end if;
939
940 if Nkind (Expression (Arg1)) /= N_Integer_Literal then
941 Error_Msg
942 ("argument for pragma% must be integer literal",
943 Sloc (Expression (Arg1)));
944 raise Error_Resync;
945
946 -- OK, this source reference pragma is effective, however, we
947 -- ignore it if it is not in the first unit in the multiple unit
948 -- case. This is because the only purpose in this case is to
949 -- provide source pragmas for subsequent use by gnatchop.
950
951 else
952 if Num_Library_Units = 1 then
953 Register_Source_Ref_Pragma
954 (Fname,
955 Strip_Directory (Fname),
956 UI_To_Int (Intval (Expression (Arg1))),
957 Get_Physical_Line_Number (Pragma_Sloc) + 1);
958 end if;
959 end if;
960 end Source_Reference;
961
962 -------------------------
963 -- Style_Checks (GNAT) --
964 -------------------------
965
966 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
967
968 -- This is processed by the parser since some of the style
969 -- checks take place during source scanning and parsing.
970
971 when Pragma_Style_Checks => Style_Checks : declare
972 A : Node_Id;
973 S : String_Id;
974 C : Char_Code;
975 OK : Boolean := True;
976
977 begin
978 -- Two argument case is only for semantics
979
980 if Arg_Count = 2 then
981 null;
982
983 else
984 Check_Arg_Count (1);
985 Check_No_Identifier (Arg1);
986 A := Expression (Arg1);
987
988 if Nkind (A) = N_String_Literal then
989 S := Strval (A);
990
991 declare
992 Slen : constant Natural := Natural (String_Length (S));
993 Options : String (1 .. Slen);
994 J : Positive;
995 Ptr : Positive;
996
997 begin
998 J := 1;
999 loop
1000 C := Get_String_Char (S, Pos (J));
1001
1002 if not In_Character_Range (C) then
1003 OK := False;
1004 Ptr := J;
1005 exit;
1006
1007 else
1008 Options (J) := Get_Character (C);
1009 end if;
1010
1011 if J = Slen then
1012 if not Ignore_Style_Checks_Pragmas then
1013 Set_Style_Check_Options (Options, OK, Ptr);
1014 end if;
1015
1016 exit;
1017
1018 else
1019 J := J + 1;
1020 end if;
1021 end loop;
1022
1023 if not OK then
1024 Error_Msg
1025 (Style_Msg_Buf (1 .. Style_Msg_Len),
1026 Sloc (Expression (Arg1)) + Source_Ptr (Ptr));
1027 raise Error_Resync;
1028 end if;
1029 end;
1030
1031 elsif Nkind (A) /= N_Identifier then
1032 OK := False;
1033
1034 elsif Chars (A) = Name_All_Checks then
1035 if not Ignore_Style_Checks_Pragmas then
1036 if GNAT_Mode then
1037 Stylesw.Set_GNAT_Style_Check_Options;
1038 else
1039 Stylesw.Set_Default_Style_Check_Options;
1040 end if;
1041 end if;
1042
1043 elsif Chars (A) = Name_On then
1044 if not Ignore_Style_Checks_Pragmas then
1045 Style_Check := True;
1046 end if;
1047
1048 elsif Chars (A) = Name_Off then
1049 if not Ignore_Style_Checks_Pragmas then
1050 Style_Check := False;
1051 end if;
1052
1053 else
1054 OK := False;
1055 end if;
1056
1057 if not OK then
1058 Error_Msg ("incorrect argument for pragma%", Sloc (A));
1059 raise Error_Resync;
1060 end if;
1061 end if;
1062 end Style_Checks;
1063
1064 -------------------------
1065 -- Suppress_All (GNAT) --
1066 -------------------------
1067
1068 -- pragma Suppress_All
1069
1070 -- This is a rather odd pragma, because other compilers allow it in
1071 -- strange places. DEC allows it at the end of units, and Rational
1072 -- allows it as a program unit pragma, when it would be more natural
1073 -- if it were a configuration pragma.
1074
1075 -- Since the reason we provide this pragma is for compatibility with
1076 -- these other compilers, we want to accommodate these strange placement
1077 -- rules, and the easiest thing is simply to allow it anywhere in a
1078 -- unit. If this pragma appears anywhere within a unit, then the effect
1079 -- is as though a pragma Suppress (All_Checks) had appeared as the first
1080 -- line of the current file, i.e. as the first configuration pragma in
1081 -- the current unit.
1082
1083 -- To get this effect, we set the flag Has_Pragma_Suppress_All in the
1084 -- compilation unit node for the current source file then in the last
1085 -- stage of parsing a file, if this flag is set, we materialize the
1086 -- Suppress (All_Checks) pragma, marked as not coming from Source.
1087
1088 when Pragma_Suppress_All =>
1089 Set_Has_Pragma_Suppress_All (Cunit (Current_Source_Unit));
1090
1091 ---------------------
1092 -- Warnings (GNAT) --
1093 ---------------------
1094
1095 -- pragma Warnings ([TOOL_NAME,] DETAILS [, REASON]);
1096
1097 -- DETAILS ::= On | Off
1098 -- DETAILS ::= On | Off, local_NAME
1099 -- DETAILS ::= static_string_EXPRESSION
1100 -- DETAILS ::= On | Off, static_string_EXPRESSION
1101
1102 -- TOOL_NAME ::= GNAT | GNATProve
1103
1104 -- REASON ::= Reason => STRING_LITERAL {& STRING_LITERAL}
1105
1106 -- Note: If the first argument matches an allowed tool name, it is
1107 -- always considered to be a tool name, even if there is a string
1108 -- variable of that name.
1109
1110 -- The one argument ON/OFF case is processed by the parser, since it may
1111 -- control parser warnings as well as semantic warnings, and in any case
1112 -- we want to be absolutely sure that the range in the warnings table is
1113 -- set well before any semantic analysis is performed. Note that we
1114 -- ignore this pragma if debug flag -gnatd.i is set.
1115
1116 -- Also note that the "one argument" case may have two or three
1117 -- arguments if the first one is a tool name, and/or the last one is a
1118 -- reason argument.
1119
1120 when Pragma_Warnings => Warnings : declare
1121 function First_Arg_Is_Matching_Tool_Name return Boolean;
1122 -- Returns True if the first argument is a tool name matching the
1123 -- current tool being run.
1124
1125 function Last_Arg return Node_Id;
1126 -- Returns the last argument
1127
1128 function Last_Arg_Is_Reason return Boolean;
1129 -- Returns True if the last argument is a reason argument
1130
1131 function Get_Reason return String_Id;
1132 -- Analyzes Reason argument and returns corresponding String_Id
1133 -- value, or null if there is no Reason argument, or if the
1134 -- argument is not of the required form.
1135
1136 -------------------------------------
1137 -- First_Arg_Is_Matching_Tool_Name --
1138 -------------------------------------
1139
1140 function First_Arg_Is_Matching_Tool_Name return Boolean is
1141 begin
1142 return Nkind (Arg1) = N_Identifier
1143
1144 -- Return True if the tool name is GNAT, and we're not in
1145 -- GNATprove or CodePeer or ASIS mode...
1146
1147 and then ((Chars (Arg1) = Name_Gnat
1148 and then not
1149 (CodePeer_Mode or GNATprove_Mode or ASIS_Mode))
1150
1151 -- or if the tool name is GNATprove, and we're in GNATprove
1152 -- mode.
1153
1154 or else
1155 (Chars (Arg1) = Name_Gnatprove
1156 and then GNATprove_Mode));
1157 end First_Arg_Is_Matching_Tool_Name;
1158
1159 ----------------
1160 -- Get_Reason --
1161 ----------------
1162
1163 function Get_Reason return String_Id is
1164 Arg : constant Node_Id := Last_Arg;
1165 begin
1166 if Last_Arg_Is_Reason then
1167 Start_String;
1168 Get_Reason_String (Expression (Arg));
1169 return End_String;
1170 else
1171 return Null_String_Id;
1172 end if;
1173 end Get_Reason;
1174
1175 --------------
1176 -- Last_Arg --
1177 --------------
1178
1179 function Last_Arg return Node_Id is
1180 Last_Arg : Node_Id;
1181
1182 begin
1183 if Arg_Count = 1 then
1184 Last_Arg := Arg1;
1185 elsif Arg_Count = 2 then
1186 Last_Arg := Arg2;
1187 elsif Arg_Count = 3 then
1188 Last_Arg := Arg3;
1189 elsif Arg_Count = 4 then
1190 Last_Arg := Next (Arg3);
1191
1192 -- Illegal case, error issued in semantic analysis
1193
1194 else
1195 Last_Arg := Empty;
1196 end if;
1197
1198 return Last_Arg;
1199 end Last_Arg;
1200
1201 ------------------------
1202 -- Last_Arg_Is_Reason --
1203 ------------------------
1204
1205 function Last_Arg_Is_Reason return Boolean is
1206 Arg : constant Node_Id := Last_Arg;
1207 begin
1208 return Nkind (Arg) in N_Has_Chars
1209 and then Chars (Arg) = Name_Reason;
1210 end Last_Arg_Is_Reason;
1211
1212 The_Arg : Node_Id; -- On/Off argument
1213 Argx : Node_Id;
1214
1215 -- Start of processing for Warnings
1216
1217 begin
1218 if not Debug_Flag_Dot_I
1219 and then (Arg_Count = 1
1220 or else (Arg_Count = 2
1221 and then (First_Arg_Is_Matching_Tool_Name
1222 or else
1223 Last_Arg_Is_Reason))
1224 or else (Arg_Count = 3
1225 and then First_Arg_Is_Matching_Tool_Name
1226 and then Last_Arg_Is_Reason))
1227 then
1228 if First_Arg_Is_Matching_Tool_Name then
1229 The_Arg := Arg2;
1230 else
1231 The_Arg := Arg1;
1232 end if;
1233
1234 Check_No_Identifier (The_Arg);
1235 Argx := Expression (The_Arg);
1236
1237 if Nkind (Argx) = N_Identifier then
1238 if Chars (Argx) = Name_On then
1239 Set_Warnings_Mode_On (Pragma_Sloc);
1240 elsif Chars (Argx) = Name_Off then
1241 Set_Warnings_Mode_Off (Pragma_Sloc, Get_Reason);
1242 end if;
1243 end if;
1244 end if;
1245 end Warnings;
1246
1247 -----------------------------
1248 -- Wide_Character_Encoding --
1249 -----------------------------
1250
1251 -- pragma Wide_Character_Encoding (IDENTIFIER | CHARACTER_LITERAL);
1252
1253 -- This is processed by the parser, since the scanner is affected
1254
1255 when Pragma_Wide_Character_Encoding => Wide_Character_Encoding : declare
1256 A : Node_Id;
1257
1258 begin
1259 Check_Arg_Count (1);
1260 Check_No_Identifier (Arg1);
1261 A := Expression (Arg1);
1262
1263 if Nkind (A) = N_Identifier then
1264 Get_Name_String (Chars (A));
1265 Wide_Character_Encoding_Method :=
1266 Get_WC_Encoding_Method (Name_Buffer (1 .. Name_Len));
1267
1268 elsif Nkind (A) = N_Character_Literal then
1269 declare
1270 R : constant Char_Code :=
1271 Char_Code (UI_To_Int (Char_Literal_Value (A)));
1272 begin
1273 if In_Character_Range (R) then
1274 Wide_Character_Encoding_Method :=
1275 Get_WC_Encoding_Method (Get_Character (R));
1276 else
1277 raise Constraint_Error;
1278 end if;
1279 end;
1280
1281 else
1282 raise Constraint_Error;
1283 end if;
1284
1285 Upper_Half_Encoding :=
1286 Wide_Character_Encoding_Method in
1287 WC_Upper_Half_Encoding_Method;
1288
1289 exception
1290 when Constraint_Error =>
1291 Error_Msg_N ("invalid argument for pragma%", Arg1);
1292 end Wide_Character_Encoding;
1293
1294 -----------------------
1295 -- All Other Pragmas --
1296 -----------------------
1297
1298 -- For all other pragmas, checking and processing is handled
1299 -- entirely in Sem_Prag, and no further checking is done by Par.
1300
1301 when Pragma_Abort_Defer
1302 | Pragma_Abstract_State
1303 | Pragma_Async_Readers
1304 | Pragma_Async_Writers
1305 | Pragma_Assertion_Policy
1306 | Pragma_Assume
1307 | Pragma_Assume_No_Invalid_Values
1308 | Pragma_All_Calls_Remote
1309 | Pragma_Allow_Integer_Address
1310 | Pragma_Annotate
1311 | Pragma_Assert
1312 | Pragma_Assert_And_Cut
1313 | Pragma_Asynchronous
1314 | Pragma_Atomic
1315 | Pragma_Atomic_Components
1316 | Pragma_Attach_Handler
1317 | Pragma_Attribute_Definition
1318 | Pragma_Check
1319 | Pragma_Check_Float_Overflow
1320 | Pragma_Check_Name
1321 | Pragma_Check_Policy
1322 | Pragma_Compile_Time_Error
1323 | Pragma_Compile_Time_Warning
1324 | Pragma_Constant_After_Elaboration
1325 | Pragma_Contract_Cases
1326 | Pragma_Convention_Identifier
1327 | Pragma_CPP_Class
1328 | Pragma_CPP_Constructor
1329 | Pragma_CPP_Virtual
1330 | Pragma_CPP_Vtable
1331 | Pragma_CPU
1332 | Pragma_C_Pass_By_Copy
1333 | Pragma_Comment
1334 | Pragma_Common_Object
1335 | Pragma_Complete_Representation
1336 | Pragma_Complex_Representation
1337 | Pragma_Component_Alignment
1338 | Pragma_Controlled
1339 | Pragma_Convention
1340 | Pragma_Deadline_Floor
1341 | Pragma_Debug_Policy
1342 | Pragma_Depends
1343 | Pragma_Detect_Blocking
1344 | Pragma_Default_Initial_Condition
1345 | Pragma_Default_Scalar_Storage_Order
1346 | Pragma_Default_Storage_Pool
1347 | Pragma_Disable_Atomic_Synchronization
1348 | Pragma_Discard_Names
1349 | Pragma_Dispatching_Domain
1350 | Pragma_Effective_Reads
1351 | Pragma_Effective_Writes
1352 | Pragma_Eliminate
1353 | Pragma_Elaborate
1354 | Pragma_Elaborate_All
1355 | Pragma_Elaborate_Body
1356 | Pragma_Elaboration_Checks
1357 | Pragma_Enable_Atomic_Synchronization
1358 | Pragma_Export
1359 | Pragma_Export_Function
1360 | Pragma_Export_Object
1361 | Pragma_Export_Procedure
1362 | Pragma_Export_Value
1363 | Pragma_Export_Valued_Procedure
1364 | Pragma_Extend_System
1365 | Pragma_Extensions_Visible
1366 | Pragma_External
1367 | Pragma_External_Name_Casing
1368 | Pragma_Favor_Top_Level
1369 | Pragma_Fast_Math
1370 | Pragma_Finalize_Storage_Only
1371 | Pragma_Ghost
1372 | Pragma_Global
1373 | Pragma_Ident
1374 | Pragma_Implementation_Defined
1375 | Pragma_Implemented
1376 | Pragma_Implicit_Packing
1377 | Pragma_Import
1378 | Pragma_Import_Function
1379 | Pragma_Import_Object
1380 | Pragma_Import_Procedure
1381 | Pragma_Import_Valued_Procedure
1382 | Pragma_Independent
1383 | Pragma_Independent_Components
1384 | Pragma_Initial_Condition
1385 | Pragma_Initialize_Scalars
1386 | Pragma_Initializes
1387 | Pragma_Inline
1388 | Pragma_Inline_Always
1389 | Pragma_Inline_Generic
1390 | Pragma_Inspection_Point
1391 | Pragma_Interface
1392 | Pragma_Interface_Name
1393 | Pragma_Interrupt_Handler
1394 | Pragma_Interrupt_State
1395 | Pragma_Interrupt_Priority
1396 | Pragma_Invariant
1397 | Pragma_Keep_Names
1398 | Pragma_License
1399 | Pragma_Link_With
1400 | Pragma_Linker_Alias
1401 | Pragma_Linker_Constructor
1402 | Pragma_Linker_Destructor
1403 | Pragma_Linker_Options
1404 | Pragma_Linker_Section
1405 | Pragma_Lock_Free
1406 | Pragma_Locking_Policy
1407 | Pragma_Loop_Invariant
1408 | Pragma_Loop_Optimize
1409 | Pragma_Loop_Variant
1410 | Pragma_Machine_Attribute
1411 | Pragma_Main
1412 | Pragma_Main_Storage
1413 | Pragma_Max_Queue_Length
1414 | Pragma_Memory_Size
1415 | Pragma_No_Body
1416 | Pragma_No_Component_Reordering
1417 | Pragma_No_Elaboration_Code_All
1418 | Pragma_No_Heap_Finalization
1419 | Pragma_No_Inline
1420 | Pragma_No_Return
1421 | Pragma_No_Run_Time
1422 | Pragma_No_Strict_Aliasing
1423 | Pragma_No_Tagged_Streams
1424 | Pragma_Normalize_Scalars
1425 | Pragma_Obsolescent
1426 | Pragma_Ordered
1427 | Pragma_Optimize
1428 | Pragma_Optimize_Alignment
1429 | Pragma_Overflow_Mode
1430 | Pragma_Overriding_Renamings
1431 | Pragma_Pack
1432 | Pragma_Part_Of
1433 | Pragma_Partition_Elaboration_Policy
1434 | Pragma_Passive
1435 | Pragma_Preelaborable_Initialization
1436 | Pragma_Polling
1437 | Pragma_Prefix_Exception_Messages
1438 | Pragma_Persistent_BSS
1439 | Pragma_Post
1440 | Pragma_Postcondition
1441 | Pragma_Post_Class
1442 | Pragma_Pre
1443 | Pragma_Precondition
1444 | Pragma_Predicate
1445 | Pragma_Predicate_Failure
1446 | Pragma_Preelaborate
1447 | Pragma_Pre_Class
1448 | Pragma_Priority
1449 | Pragma_Priority_Specific_Dispatching
1450 | Pragma_Profile
1451 | Pragma_Profile_Warnings
1452 | Pragma_Propagate_Exceptions
1453 | Pragma_Provide_Shift_Operators
1454 | Pragma_Psect_Object
1455 | Pragma_Pure
1456 | Pragma_Pure_Function
1457 | Pragma_Queuing_Policy
1458 | Pragma_Refined_Depends
1459 | Pragma_Refined_Global
1460 | Pragma_Refined_Post
1461 | Pragma_Refined_State
1462 | Pragma_Relative_Deadline
1463 | Pragma_Remote_Access_Type
1464 | Pragma_Remote_Call_Interface
1465 | Pragma_Remote_Types
1466 | Pragma_Restricted_Run_Time
1467 | Pragma_Rational
1468 | Pragma_Ravenscar
1469 | Pragma_Rename_Pragma
1470 | Pragma_Reviewable
1471 | Pragma_Secondary_Stack_Size
1472 | Pragma_Share_Generic
1473 | Pragma_Shared
1474 | Pragma_Shared_Passive
1475 | Pragma_Short_Circuit_And_Or
1476 | Pragma_Short_Descriptors
1477 | Pragma_Simple_Storage_Pool_Type
1478 | Pragma_SPARK_Mode
1479 | Pragma_Storage_Size
1480 | Pragma_Storage_Unit
1481 | Pragma_Static_Elaboration_Desired
1482 | Pragma_Stream_Convert
1483 | Pragma_Subtitle
1484 | Pragma_Suppress
1485 | Pragma_Suppress_Debug_Info
1486 | Pragma_Suppress_Exception_Locations
1487 | Pragma_Suppress_Initialization
1488 | Pragma_System_Name
1489 | Pragma_Task_Dispatching_Policy
1490 | Pragma_Task_Info
1491 | Pragma_Task_Name
1492 | Pragma_Task_Storage
1493 | Pragma_Test_Case
1494 | Pragma_Thread_Local_Storage
1495 | Pragma_Time_Slice
1496 | Pragma_Title
1497 | Pragma_Type_Invariant
1498 | Pragma_Type_Invariant_Class
1499 | Pragma_Unchecked_Union
1500 | Pragma_Unevaluated_Use_Of_Old
1501 | Pragma_Unimplemented_Unit
1502 | Pragma_Universal_Aliasing
1503 | Pragma_Universal_Data
1504 | Pragma_Unmodified
1505 | Pragma_Unreferenced
1506 | Pragma_Unreferenced_Objects
1507 | Pragma_Unreserve_All_Interrupts
1508 | Pragma_Unsuppress
1509 | Pragma_Unused
1510 | Pragma_Use_VADS_Size
1511 | Pragma_Volatile
1512 | Pragma_Volatile_Components
1513 | Pragma_Volatile_Full_Access
1514 | Pragma_Volatile_Function
1515 | Pragma_Warning_As_Error
1516 | Pragma_Weak_External
1517 | Pragma_Validity_Checks
1518 =>
1519 null;
1520
1521 --------------------
1522 -- Unknown_Pragma --
1523 --------------------
1524
1525 -- Should be impossible, since we excluded this case earlier on
1526
1527 when Unknown_Pragma =>
1528 raise Program_Error;
1529
1530 end case;
1531
1532 return Pragma_Node;
1533
1534 --------------------
1535 -- Error Handling --
1536 --------------------
1537
1538 exception
1539 when Error_Resync =>
1540 return Error;
1541
1542 end Prag;
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