1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2005 Free Software Foundation, Inc. --
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 2, 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 COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 -- Generally the parser checks the basic syntax of pragmas, but does not
28 -- do specialized syntax checks for individual pragmas, these are deferred
29 -- to semantic analysis time (see unit Sem_Prag). There are some pragmas
30 -- which require recognition and either partial or complete processing
31 -- during parsing, and this unit performs this required processing.
33 with Fname.UF; use Fname.UF;
34 with Osint; use Osint;
35 with Rident; use Rident;
36 with Restrict; use Restrict;
37 with Stringt; use Stringt;
38 with Stylesw; use Stylesw;
39 with Uintp; use Uintp;
40 with Uname; use Uname;
44 function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is
45 Pragma_Name : constant Name_Id := Chars (Pragma_Node);
46 Prag_Id : constant Pragma_Id := Get_Pragma_Id (Pragma_Name);
47 Pragma_Sloc : constant Source_Ptr := Sloc (Pragma_Node);
51 -----------------------
52 -- Local Subprograms --
53 -----------------------
55 function Arg1 return Node_Id;
56 function Arg2 return Node_Id;
57 function Arg3 return Node_Id;
58 -- Obtain specified Pragma_Argument_Association. It is allowable to call
59 -- the routine for the argument one past the last present argument, but
60 -- that is the only case in which a non-present argument can be referenced.
62 procedure Check_Arg_Count (Required : Int);
63 -- Check argument count for pragma = Required.
64 -- If not give error and raise Error_Resync.
66 procedure Check_Arg_Is_String_Literal (Arg : Node_Id);
67 -- Check the expression of the specified argument to make sure that it
68 -- is a string literal. If not give error and raise Error_Resync.
70 procedure Check_Arg_Is_On_Or_Off (Arg : Node_Id);
71 -- Check the expression of the specified argument to make sure that it
72 -- is an identifier which is either ON or OFF, and if not, then issue
73 -- an error message and raise Error_Resync.
75 procedure Check_No_Identifier (Arg : Node_Id);
76 -- Checks that the given argument does not have an identifier. If
77 -- an identifier is present, then an error message is issued, and
78 -- Error_Resync is raised.
80 procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
81 -- Checks if the given argument has an identifier, and if so, requires
82 -- it to match the given identifier name. If there is a non-matching
83 -- identifier, then an error message is given and Error_Resync raised.
85 procedure Check_Required_Identifier (Arg : Node_Id; Id : Name_Id);
86 -- Same as Check_Optional_Identifier, except that the name is required
87 -- to be present and to match the given Id value.
89 procedure Process_Restrictions_Or_Restriction_Warnings;
90 -- Common processing for Restrictions and Restriction_Warnings pragmas.
91 -- This routine only processes the case of No_Obsolescent_Features,
92 -- which is the only restriction that has syntactic effects. No general
93 -- error checking is done, since this will be done in Sem_Prag. The
94 -- other case processed is pragma Restrictions No_Dependence, since
95 -- otherwise this is done too late.
101 function Arg1 return Node_Id is
103 return First (Pragma_Argument_Associations (Pragma_Node));
110 function Arg2 return Node_Id is
119 function Arg3 return Node_Id is
124 ---------------------
125 -- Check_Arg_Count --
126 ---------------------
128 procedure Check_Arg_Count (Required : Int) is
130 if Arg_Count /= Required then
131 Error_Msg ("wrong number of arguments for pragma%", Pragma_Sloc);
136 ----------------------------
137 -- Check_Arg_Is_On_Or_Off --
138 ----------------------------
140 procedure Check_Arg_Is_On_Or_Off (Arg : Node_Id) is
141 Argx : constant Node_Id := Expression (Arg);
144 if Nkind (Expression (Arg)) /= N_Identifier
145 or else (Chars (Argx) /= Name_On
147 Chars (Argx) /= Name_Off)
149 Error_Msg_Name_2 := Name_On;
150 Error_Msg_Name_3 := Name_Off;
153 ("argument for pragma% must be% or%", Sloc (Argx));
156 end Check_Arg_Is_On_Or_Off;
158 ---------------------------------
159 -- Check_Arg_Is_String_Literal --
160 ---------------------------------
162 procedure Check_Arg_Is_String_Literal (Arg : Node_Id) is
164 if Nkind (Expression (Arg)) /= N_String_Literal then
166 ("argument for pragma% must be string literal",
167 Sloc (Expression (Arg)));
170 end Check_Arg_Is_String_Literal;
172 -------------------------
173 -- Check_No_Identifier --
174 -------------------------
176 procedure Check_No_Identifier (Arg : Node_Id) is
178 if Chars (Arg) /= No_Name then
179 Error_Msg_N ("pragma% does not permit named arguments", Arg);
182 end Check_No_Identifier;
184 -------------------------------
185 -- Check_Optional_Identifier --
186 -------------------------------
188 procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id) is
190 if Present (Arg) and then Chars (Arg) /= No_Name then
191 if Chars (Arg) /= Id then
192 Error_Msg_Name_2 := Id;
193 Error_Msg_N ("pragma% argument expects identifier%", Arg);
196 end Check_Optional_Identifier;
198 -------------------------------
199 -- Check_Required_Identifier --
200 -------------------------------
202 procedure Check_Required_Identifier (Arg : Node_Id; Id : Name_Id) is
204 if Chars (Arg) /= Id then
205 Error_Msg_Name_2 := Id;
206 Error_Msg_N ("pragma% argument must have identifier%", Arg);
208 end Check_Required_Identifier;
210 --------------------------------------------------
211 -- Process_Restrictions_Or_Restriction_Warnings --
212 --------------------------------------------------
214 procedure Process_Restrictions_Or_Restriction_Warnings is
221 while Present (Arg) loop
223 Expr := Expression (Arg);
226 and then Nkind (Expr) = N_Identifier
227 and then Get_Restriction_Id (Chars (Expr)) = No_Obsolescent_Features
229 Set_Restriction (No_Obsolescent_Features, Pragma_Node);
230 Restriction_Warnings (No_Obsolescent_Features) :=
231 Prag_Id = Pragma_Restriction_Warnings;
233 elsif Id = Name_No_Dependence then
234 Set_Restriction_No_Dependence
236 Warn => Prag_Id = Pragma_Restriction_Warnings);
241 end Process_Restrictions_Or_Restriction_Warnings;
243 -- Start if processing for Prag
246 Error_Msg_Name_1 := Pragma_Name;
248 -- Ignore unrecognized pragma. We let Sem post the warning for this, since
249 -- it is a semantic error, not a syntactic one (we have already checked
250 -- the syntax for the unrecognized pragma as required by (RM 2.8(11)).
252 if Prag_Id = Unknown_Pragma then
256 -- Count number of arguments. This loop also checks if any of the arguments
257 -- are Error, indicating a syntax error as they were parsed. If so, we
258 -- simply return, because we get into trouble with cascaded errors if we
259 -- try to perform our error checks on junk arguments.
263 if Present (Pragma_Argument_Associations (Pragma_Node)) then
266 while Arg_Node /= Empty loop
267 Arg_Count := Arg_Count + 1;
269 if Expression (Arg_Node) = Error then
277 -- Remaining processing is pragma dependent
285 -- This pragma must be processed at parse time, since we want to set
286 -- the Ada version properly at parse time to recognize the appropriate
287 -- Ada version syntax.
289 when Pragma_Ada_83 =>
290 Ada_Version := Ada_83;
296 -- This pragma must be processed at parse time, since we want to set
297 -- the Ada version properly at parse time to recognize the appropriate
298 -- Ada version syntax.
300 when Pragma_Ada_95 =>
301 Ada_Version := Ada_95;
307 -- This pragma must be processed at parse time, since we want to set
308 -- the Ada version properly at parse time to recognize the appropriate
309 -- Ada version syntax. However, it is only the zero argument form that
310 -- must be processed at parse time.
312 when Pragma_Ada_05 =>
313 if Arg_Count = 0 then
314 Ada_Version := Ada_05;
321 -- pragma Debug (PROCEDURE_CALL_STATEMENT);
323 -- This has to be processed by the parser because of the very peculiar
324 -- form of the second parameter, which is syntactically from a formal
325 -- point of view a function call (since it must be an expression), but
326 -- semantically we treat it as a procedure call (which has exactly the
327 -- same syntactic form, so that's why we can get away with this!)
331 Check_No_Identifier (Arg1);
334 Expr : constant Node_Id := New_Copy (Expression (Arg1));
337 if Nkind (Expr) /= N_Indexed_Component
338 and then Nkind (Expr) /= N_Function_Call
339 and then Nkind (Expr) /= N_Identifier
340 and then Nkind (Expr) /= N_Selected_Component
343 ("argument of pragma% is not procedure call", Sloc (Expr));
347 (Pragma_Node, P_Statement_Name (Expr));
351 -------------------------------
352 -- Extensions_Allowed (GNAT) --
353 -------------------------------
355 -- pragma Extensions_Allowed (Off | On)
357 -- The processing for pragma Extensions_Allowed must be done at
358 -- parse time, since extensions mode may affect what is accepted.
360 when Pragma_Extensions_Allowed =>
362 Check_No_Identifier (Arg1);
363 Check_Arg_Is_On_Or_Off (Arg1);
365 if Chars (Expression (Arg1)) = Name_On then
366 Extensions_Allowed := True;
367 Ada_Version := Ada_Version_Type'Last;
369 Extensions_Allowed := False;
370 Ada_Version := Ada_Version_Type'Min (Ada_Version, Ada_95);
377 -- pragma List (Off | On)
379 -- The processing for pragma List must be done at parse time,
380 -- since a listing can be generated in parse only mode.
384 Check_No_Identifier (Arg1);
385 Check_Arg_Is_On_Or_Off (Arg1);
387 -- We unconditionally make a List_On entry for the pragma, so that
388 -- in the List (Off) case, the pragma will print even in a region
389 -- of code with listing turned off (this is required!)
391 List_Pragmas.Increment_Last;
392 List_Pragmas.Table (List_Pragmas.Last) :=
393 (Ptyp => List_On, Ploc => Sloc (Pragma_Node));
395 -- Now generate the list off entry for pragma List (Off)
397 if Chars (Expression (Arg1)) = Name_Off then
398 List_Pragmas.Increment_Last;
399 List_Pragmas.Table (List_Pragmas.Last) :=
400 (Ptyp => List_Off, Ploc => Semi);
409 -- Processing for this pragma must be done at parse time, since a
410 -- listing can be generated in parse only mode with semantics off.
414 List_Pragmas.Increment_Last;
415 List_Pragmas.Table (List_Pragmas.Last) := (Page, Semi);
421 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
424 -- restriction_IDENTIFIER
425 -- | restriction_parameter_IDENTIFIER => EXPRESSION
427 -- We process the case of No_Obsolescent_Features, since this has
428 -- a syntactic effect that we need to detect at parse time (the use
429 -- of replacement characters such as colon for pound sign).
431 when Pragma_Restrictions =>
432 Process_Restrictions_Or_Restriction_Warnings;
434 --------------------------
435 -- Restriction_Warnings --
436 --------------------------
438 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
441 -- restriction_IDENTIFIER
442 -- | restriction_parameter_IDENTIFIER => EXPRESSION
444 -- See above comment for pragma Restrictions
446 when Pragma_Restriction_Warnings =>
447 Process_Restrictions_Or_Restriction_Warnings;
449 ----------------------------------------------------------
450 -- Source_File_Name and Source_File_Name_Project (GNAT) --
451 ----------------------------------------------------------
453 -- These two pragmas have the same syntax and semantics.
454 -- There are five forms of these pragmas:
456 -- pragma Source_File_Name[_Project] (
457 -- [UNIT_NAME =>] unit_NAME,
458 -- BODY_FILE_NAME => STRING_LITERAL
459 -- [, [INDEX =>] INTEGER_LITERAL]);
461 -- pragma Source_File_Name[_Project] (
462 -- [UNIT_NAME =>] unit_NAME,
463 -- SPEC_FILE_NAME => STRING_LITERAL
464 -- [, [INDEX =>] INTEGER_LITERAL]);
466 -- pragma Source_File_Name[_Project] (
467 -- BODY_FILE_NAME => STRING_LITERAL
468 -- [, DOT_REPLACEMENT => STRING_LITERAL]
469 -- [, CASING => CASING_SPEC]);
471 -- pragma Source_File_Name[_Project] (
472 -- SPEC_FILE_NAME => STRING_LITERAL
473 -- [, DOT_REPLACEMENT => STRING_LITERAL]
474 -- [, CASING => CASING_SPEC]);
476 -- pragma Source_File_Name[_Project] (
477 -- SUBUNIT_FILE_NAME => STRING_LITERAL
478 -- [, DOT_REPLACEMENT => STRING_LITERAL]
479 -- [, CASING => CASING_SPEC]);
481 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
483 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
484 -- Source_File_Name (SFN), however their usage is exclusive:
485 -- SFN can only be used when no project file is used, while
486 -- SFNP can only be used when a project file is used.
488 -- The Project Manager produces a configuration pragmas file that
489 -- is communicated to the compiler with -gnatec switch. This file
490 -- contains only SFNP pragmas (at least two for the default naming
491 -- scheme. As this configuration pragmas file is always the first
492 -- processed by the compiler, it prevents the use of pragmas SFN in
493 -- other config files when a project file is in use.
495 -- Note: we process this during parsing, since we need to have the
496 -- source file names set well before the semantic analysis starts,
497 -- since we load the spec and with'ed packages before analysis.
499 when Pragma_Source_File_Name | Pragma_Source_File_Name_Project =>
500 Source_File_Name : declare
501 Unam : Unit_Name_Type;
511 function Get_Fname (Arg : Node_Id) return Name_Id;
512 -- Process file name from unit name form of pragma
514 function Get_String_Argument (Arg : Node_Id) return String_Ptr;
515 -- Process string literal value from argument
517 procedure Process_Casing (Arg : Node_Id);
518 -- Process Casing argument of pattern form of pragma
520 procedure Process_Dot_Replacement (Arg : Node_Id);
521 -- Process Dot_Replacement argument of patterm form of pragma
527 function Get_Fname (Arg : Node_Id) return Name_Id is
529 String_To_Name_Buffer (Strval (Expression (Arg)));
531 for J in 1 .. Name_Len loop
532 if Is_Directory_Separator (Name_Buffer (J)) then
534 ("directory separator character not allowed",
535 Sloc (Expression (Arg)) + Source_Ptr (J));
542 -------------------------
543 -- Get_String_Argument --
544 -------------------------
546 function Get_String_Argument (Arg : Node_Id) return String_Ptr is
550 if Nkind (Expression (Arg)) /= N_String_Literal
552 Nkind (Expression (Arg)) /= N_Operator_Symbol
555 ("argument for pragma% must be string literal", Arg);
559 Str := Strval (Expression (Arg));
561 -- Check string has no wide chars
563 for J in 1 .. String_Length (Str) loop
564 if Get_String_Char (Str, J) > 255 then
566 ("wide character not allowed in pattern for pragma%",
567 Sloc (Expression (Arg2)) + Text_Ptr (J) - 1);
573 String_To_Name_Buffer (Str);
574 return new String'(Name_Buffer (1 .. Name_Len));
575 end Get_String_Argument;
581 procedure Process_Casing (Arg : Node_Id) is
582 Expr : constant Node_Id := Expression (Arg);
585 Check_Required_Identifier (Arg, Name_Casing);
587 if Nkind (Expr) = N_Identifier then
588 if Chars (Expr) = Name_Lowercase then
589 Cas := All_Lower_Case;
591 elsif Chars (Expr) = Name_Uppercase then
592 Cas := All_Upper_Case;
594 elsif Chars (Expr) = Name_Mixedcase then
601 ("Casing argument for pragma% must be " &
602 "one of Mixedcase, Lowercase, Uppercase",
606 -----------------------------
607 -- Process_Dot_Replacement --
608 -----------------------------
610 procedure Process_Dot_Replacement (Arg : Node_Id) is
612 Check_Required_Identifier (Arg, Name_Dot_Replacement);
613 Dot := Get_String_Argument (Arg);
614 end Process_Dot_Replacement;
616 -- Start of processing for Source_File_Name and
617 -- Source_File_Name_Project pragmas.
620 if Get_Pragma_Id (Pragma_Name) = Pragma_Source_File_Name then
621 if Project_File_In_Use = In_Use then
623 ("pragma Source_File_Name cannot be used " &
624 "with a project file", Pragma_Sloc);
627 Project_File_In_Use := Not_In_Use;
631 if Project_File_In_Use = Not_In_Use then
633 ("pragma Source_File_Name_Project should only be used " &
634 "with a project file", Pragma_Sloc);
636 Project_File_In_Use := In_Use;
640 -- We permit from 1 to 3 arguments
642 if Arg_Count not in 1 .. 3 then
646 Expr1 := Expression (Arg1);
648 -- If first argument is identifier or selected component, then
649 -- we have the specific file case of the Source_File_Name pragma,
650 -- and the first argument is a unit name.
652 if Nkind (Expr1) = N_Identifier
654 (Nkind (Expr1) = N_Selected_Component
656 Nkind (Selector_Name (Expr1)) = N_Identifier)
658 if Nkind (Expr1) = N_Identifier
659 and then Chars (Expr1) = Name_System
662 ("pragma Source_File_Name may not be used for System",
667 -- Process index argument if present
669 if Arg_Count = 3 then
670 Expr := Expression (Arg3);
672 if Nkind (Expr) /= N_Integer_Literal
673 or else not UI_Is_In_Int_Range (Intval (Expr))
674 or else Intval (Expr) > 999
675 or else Intval (Expr) <= 0
678 ("pragma% index must be integer literal" &
679 " in range 1 .. 999", Sloc (Expr));
682 Index := UI_To_Int (Intval (Expr));
685 -- No index argument present
692 Check_Optional_Identifier (Arg1, Name_Unit_Name);
693 Unam := Get_Unit_Name (Expr1);
695 Check_Arg_Is_String_Literal (Arg2);
697 if Chars (Arg2) = Name_Spec_File_Name then
699 (Get_Spec_Name (Unam), Get_Fname (Arg2), Index);
701 elsif Chars (Arg2) = Name_Body_File_Name then
703 (Unam, Get_Fname (Arg2), Index);
707 ("pragma% argument has incorrect identifier", Arg2);
711 -- If the first argument is not an identifier, then we must have
712 -- the pattern form of the pragma, and the first argument must be
713 -- the pattern string with an appropriate name.
716 if Chars (Arg1) = Name_Spec_File_Name then
719 elsif Chars (Arg1) = Name_Body_File_Name then
722 elsif Chars (Arg1) = Name_Subunit_File_Name then
725 elsif Chars (Arg1) = Name_Unit_Name then
727 ("Unit_Name parameter for pragma% must be an identifier",
733 ("pragma% argument has incorrect identifier", Arg1);
737 Pat := Get_String_Argument (Arg1);
739 -- Check pattern has exactly one asterisk
742 for J in Pat'Range loop
743 if Pat (J) = '*' then
750 ("file name pattern must have exactly one * character",
755 -- Set defaults for Casing and Dot_Separator parameters
757 Cas := All_Lower_Case;
758 Dot := new String'(".");
760 -- Process second and third arguments if present
762 if Arg_Count > 1 then
763 if Chars (Arg2) = Name_Casing then
764 Process_Casing (Arg2);
766 if Arg_Count = 3 then
767 Process_Dot_Replacement (Arg3);
771 Process_Dot_Replacement (Arg2);
773 if Arg_Count = 3 then
774 Process_Casing (Arg3);
779 Set_File_Name_Pattern (Pat, Typ, Dot, Cas);
781 end Source_File_Name;
783 -----------------------------
784 -- Source_Reference (GNAT) --
785 -----------------------------
787 -- pragma Source_Reference
788 -- (INTEGER_LITERAL [, STRING_LITERAL] );
790 -- Processing for this pragma must be done at parse time, since error
791 -- messages needing the proper line numbers can be generated in parse
792 -- only mode with semantic checking turned off, and indeed we usually
793 -- turn off semantic checking anyway if any parse errors are found.
795 when Pragma_Source_Reference => Source_Reference : declare
799 if Arg_Count /= 1 then
801 Check_No_Identifier (Arg2);
804 -- Check that this is first line of file. We skip this test if
805 -- we are in syntax check only mode, since we may be dealing with
806 -- multiple compilation units.
808 if Get_Physical_Line_Number (Pragma_Sloc) /= 1
809 and then Num_SRef_Pragmas (Current_Source_File) = 0
810 and then Operating_Mode /= Check_Syntax
813 ("first % pragma must be first line of file", Pragma_Sloc);
817 Check_No_Identifier (Arg1);
819 if Arg_Count = 1 then
820 if Num_SRef_Pragmas (Current_Source_File) = 0 then
822 ("file name required for first % pragma in file",
832 Check_Arg_Is_String_Literal (Arg2);
833 String_To_Name_Buffer (Strval (Expression (Arg2)));
836 if Num_SRef_Pragmas (Current_Source_File) > 0 then
837 if Fname /= Full_Ref_Name (Current_Source_File) then
839 ("file name must be same in all % pragmas", Pragma_Sloc);
845 if Nkind (Expression (Arg1)) /= N_Integer_Literal then
847 ("argument for pragma% must be integer literal",
848 Sloc (Expression (Arg1)));
851 -- OK, this source reference pragma is effective, however, we
852 -- ignore it if it is not in the first unit in the multiple unit
853 -- case. This is because the only purpose in this case is to
854 -- provide source pragmas for subsequent use by gnatchop.
857 if Num_Library_Units = 1 then
858 Register_Source_Ref_Pragma
860 Strip_Directory (Fname),
861 UI_To_Int (Intval (Expression (Arg1))),
862 Get_Physical_Line_Number (Pragma_Sloc) + 1);
865 end Source_Reference;
867 -------------------------
868 -- Style_Checks (GNAT) --
869 -------------------------
871 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
873 -- This is processed by the parser since some of the style
874 -- checks take place during source scanning and parsing.
876 when Pragma_Style_Checks => Style_Checks : declare
880 OK : Boolean := True;
883 -- Two argument case is only for semantics
885 if Arg_Count = 2 then
890 Check_No_Identifier (Arg1);
891 A := Expression (Arg1);
893 if Nkind (A) = N_String_Literal then
897 Slen : constant Natural := Natural (String_Length (S));
898 Options : String (1 .. Slen);
905 C := Get_String_Char (S, Int (J));
907 if not In_Character_Range (C) then
913 Options (J) := Get_Character (C);
917 Set_Style_Check_Options (Options, OK, Ptr);
927 ("invalid style check option",
928 Sloc (Expression (Arg1)) + Source_Ptr (Ptr));
933 elsif Nkind (A) /= N_Identifier then
936 elsif Chars (A) = Name_All_Checks then
937 Stylesw.Set_Default_Style_Check_Options;
939 elsif Chars (A) = Name_On then
942 elsif Chars (A) = Name_Off then
943 Style_Check := False;
950 Error_Msg ("incorrect argument for pragma%", Sloc (A));
956 ---------------------
957 -- Warnings (GNAT) --
958 ---------------------
960 -- pragma Warnings (On | Off, [LOCAL_NAME])
962 -- The one argument case is processed by the parser, since it may
963 -- control parser warnings as well as semantic warnings, and in any
964 -- case we want to be absolutely sure that the range in the warnings
965 -- table is set well before any semantic analysis is performed.
967 when Pragma_Warnings =>
968 if Arg_Count = 1 then
969 Check_No_Identifier (Arg1);
970 Check_Arg_Is_On_Or_Off (Arg1);
972 if Chars (Expression (Arg1)) = Name_On then
973 Set_Warnings_Mode_On (Pragma_Sloc);
975 Set_Warnings_Mode_Off (Pragma_Sloc);
979 -----------------------
980 -- All Other Pragmas --
981 -----------------------
983 -- For all other pragmas, checking and processing is handled
984 -- entirely in Sem_Prag, and no further checking is done by Par.
986 when Pragma_Abort_Defer |
988 Pragma_All_Calls_Remote |
991 Pragma_Asynchronous |
993 Pragma_Atomic_Components |
994 Pragma_Attach_Handler |
995 Pragma_Compile_Time_Warning |
996 Pragma_Convention_Identifier |
998 Pragma_CPP_Constructor |
1001 Pragma_C_Pass_By_Copy |
1003 Pragma_Common_Object |
1004 Pragma_Complex_Representation |
1005 Pragma_Component_Alignment |
1008 Pragma_Detect_Blocking |
1009 Pragma_Discard_Names |
1012 Pragma_Elaborate_All |
1013 Pragma_Elaborate_Body |
1014 Pragma_Elaboration_Checks |
1015 Pragma_Explicit_Overriding |
1017 Pragma_Export_Exception |
1018 Pragma_Export_Function |
1019 Pragma_Export_Object |
1020 Pragma_Export_Procedure |
1021 Pragma_Export_Value |
1022 Pragma_Export_Valued_Procedure |
1023 Pragma_Extend_System |
1025 Pragma_External_Name_Casing |
1026 Pragma_Finalize_Storage_Only |
1027 Pragma_Float_Representation |
1030 Pragma_Import_Exception |
1031 Pragma_Import_Function |
1032 Pragma_Import_Object |
1033 Pragma_Import_Procedure |
1034 Pragma_Import_Valued_Procedure |
1035 Pragma_Initialize_Scalars |
1037 Pragma_Inline_Always |
1038 Pragma_Inline_Generic |
1039 Pragma_Inspection_Point |
1041 Pragma_Interface_Name |
1042 Pragma_Interrupt_Handler |
1043 Pragma_Interrupt_State |
1044 Pragma_Interrupt_Priority |
1045 Pragma_Java_Constructor |
1046 Pragma_Java_Interface |
1050 Pragma_Linker_Alias |
1051 Pragma_Linker_Options |
1052 Pragma_Linker_Section |
1053 Pragma_Locking_Policy |
1055 Pragma_Machine_Attribute |
1057 Pragma_Main_Storage |
1058 Pragma_Memory_Size |
1060 Pragma_Obsolescent |
1061 Pragma_No_Run_Time |
1062 Pragma_No_Strict_Aliasing |
1063 Pragma_Normalize_Scalars |
1065 Pragma_Optional_Overriding |
1069 Pragma_Persistent_Data |
1070 Pragma_Persistent_Object |
1071 Pragma_Preelaborate |
1074 Pragma_Profile_Warnings |
1075 Pragma_Propagate_Exceptions |
1076 Pragma_Psect_Object |
1078 Pragma_Pure_Function |
1079 Pragma_Queuing_Policy |
1080 Pragma_Remote_Call_Interface |
1081 Pragma_Remote_Types |
1082 Pragma_Restricted_Run_Time |
1085 Pragma_Share_Generic |
1087 Pragma_Shared_Passive |
1088 Pragma_Storage_Size |
1089 Pragma_Storage_Unit |
1090 Pragma_Stream_Convert |
1093 Pragma_Suppress_All |
1094 Pragma_Suppress_Debug_Info |
1095 Pragma_Suppress_Exception_Locations |
1096 Pragma_Suppress_Initialization |
1097 Pragma_System_Name |
1098 Pragma_Task_Dispatching_Policy |
1101 Pragma_Task_Storage |
1102 Pragma_Thread_Body |
1105 Pragma_Unchecked_Union |
1106 Pragma_Unimplemented_Unit |
1107 Pragma_Universal_Data |
1108 Pragma_Unreferenced |
1109 Pragma_Unreserve_All_Interrupts |
1111 Pragma_Use_VADS_Size |
1113 Pragma_Volatile_Components |
1114 Pragma_Weak_External |
1115 Pragma_Validity_Checks =>
1118 --------------------
1119 -- Unknown_Pragma --
1120 --------------------
1122 -- Should be impossible, since we excluded this case earlier on
1124 when Unknown_Pragma =>
1125 raise Program_Error;
1131 --------------------
1132 -- Error Handling --
1133 --------------------
1136 when Error_Resync =>