1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2004 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.
311 when Pragma_Ada_05
=>
312 Ada_Version
:= Ada_05
;
318 -- pragma Debug (PROCEDURE_CALL_STATEMENT);
320 -- This has to be processed by the parser because of the very peculiar
321 -- form of the second parameter, which is syntactically from a formal
322 -- point of view a function call (since it must be an expression), but
323 -- semantically we treat it as a procedure call (which has exactly the
324 -- same syntactic form, so that's why we can get away with this!)
328 Check_No_Identifier
(Arg1
);
331 Expr
: constant Node_Id
:= New_Copy
(Expression
(Arg1
));
334 if Nkind
(Expr
) /= N_Indexed_Component
335 and then Nkind
(Expr
) /= N_Function_Call
336 and then Nkind
(Expr
) /= N_Identifier
337 and then Nkind
(Expr
) /= N_Selected_Component
340 ("argument of pragma% is not procedure call", Sloc
(Expr
));
344 (Pragma_Node
, P_Statement_Name
(Expr
));
348 -------------------------------
349 -- Extensions_Allowed (GNAT) --
350 -------------------------------
352 -- pragma Extensions_Allowed (Off | On)
354 -- The processing for pragma Extensions_Allowed must be done at
355 -- parse time, since extensions mode may affect what is accepted.
357 when Pragma_Extensions_Allowed
=>
359 Check_No_Identifier
(Arg1
);
360 Check_Arg_Is_On_Or_Off
(Arg1
);
362 if Chars
(Expression
(Arg1
)) = Name_On
then
363 Extensions_Allowed
:= True;
364 Ada_Version
:= Ada_Version_Type
'Last;
366 Extensions_Allowed
:= False;
367 Ada_Version
:= Ada_Version_Type
'Min (Ada_Version
, Ada_95
);
374 -- pragma List (Off | On)
376 -- The processing for pragma List must be done at parse time,
377 -- since a listing can be generated in parse only mode.
381 Check_No_Identifier
(Arg1
);
382 Check_Arg_Is_On_Or_Off
(Arg1
);
384 -- We unconditionally make a List_On entry for the pragma, so that
385 -- in the List (Off) case, the pragma will print even in a region
386 -- of code with listing turned off (this is required!)
388 List_Pragmas
.Increment_Last
;
389 List_Pragmas
.Table
(List_Pragmas
.Last
) :=
390 (Ptyp
=> List_On
, Ploc
=> Sloc
(Pragma_Node
));
392 -- Now generate the list off entry for pragma List (Off)
394 if Chars
(Expression
(Arg1
)) = Name_Off
then
395 List_Pragmas
.Increment_Last
;
396 List_Pragmas
.Table
(List_Pragmas
.Last
) :=
397 (Ptyp
=> List_Off
, Ploc
=> Semi
);
406 -- Processing for this pragma must be done at parse time, since a
407 -- listing can be generated in parse only mode with semantics off.
411 List_Pragmas
.Increment_Last
;
412 List_Pragmas
.Table
(List_Pragmas
.Last
) := (Page
, Semi
);
418 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
421 -- restriction_IDENTIFIER
422 -- | restriction_parameter_IDENTIFIER => EXPRESSION
424 -- We process the case of No_Obsolescent_Features, since this has
425 -- a syntactic effect that we need to detect at parse time (the use
426 -- of replacement characters such as colon for pound sign).
428 when Pragma_Restrictions
=>
429 Process_Restrictions_Or_Restriction_Warnings
;
431 --------------------------
432 -- Restriction_Warnings --
433 --------------------------
435 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
438 -- restriction_IDENTIFIER
439 -- | restriction_parameter_IDENTIFIER => EXPRESSION
441 -- See above comment for pragma Restrictions
443 when Pragma_Restriction_Warnings
=>
444 Process_Restrictions_Or_Restriction_Warnings
;
446 ----------------------------------------------------------
447 -- Source_File_Name and Source_File_Name_Project (GNAT) --
448 ----------------------------------------------------------
450 -- These two pragmas have the same syntax and semantics.
451 -- There are five forms of these pragmas:
453 -- pragma Source_File_Name[_Project] (
454 -- [UNIT_NAME =>] unit_NAME,
455 -- BODY_FILE_NAME => STRING_LITERAL
456 -- [, [INDEX =>] INTEGER_LITERAL]);
458 -- pragma Source_File_Name[_Project] (
459 -- [UNIT_NAME =>] unit_NAME,
460 -- SPEC_FILE_NAME => STRING_LITERAL
461 -- [, [INDEX =>] INTEGER_LITERAL]);
463 -- pragma Source_File_Name[_Project] (
464 -- BODY_FILE_NAME => STRING_LITERAL
465 -- [, DOT_REPLACEMENT => STRING_LITERAL]
466 -- [, CASING => CASING_SPEC]);
468 -- pragma Source_File_Name[_Project] (
469 -- SPEC_FILE_NAME => STRING_LITERAL
470 -- [, DOT_REPLACEMENT => STRING_LITERAL]
471 -- [, CASING => CASING_SPEC]);
473 -- pragma Source_File_Name[_Project] (
474 -- SUBUNIT_FILE_NAME => STRING_LITERAL
475 -- [, DOT_REPLACEMENT => STRING_LITERAL]
476 -- [, CASING => CASING_SPEC]);
478 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
480 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
481 -- Source_File_Name (SFN), however their usage is exclusive:
482 -- SFN can only be used when no project file is used, while
483 -- SFNP can only be used when a project file is used.
485 -- The Project Manager produces a configuration pragmas file that
486 -- is communicated to the compiler with -gnatec switch. This file
487 -- contains only SFNP pragmas (at least two for the default naming
488 -- scheme. As this configuration pragmas file is always the first
489 -- processed by the compiler, it prevents the use of pragmas SFN in
490 -- other config files when a project file is in use.
492 -- Note: we process this during parsing, since we need to have the
493 -- source file names set well before the semantic analysis starts,
494 -- since we load the spec and with'ed packages before analysis.
496 when Pragma_Source_File_Name | Pragma_Source_File_Name_Project
=>
497 Source_File_Name
: declare
498 Unam
: Unit_Name_Type
;
508 function Get_Fname
(Arg
: Node_Id
) return Name_Id
;
509 -- Process file name from unit name form of pragma
511 function Get_String_Argument
(Arg
: Node_Id
) return String_Ptr
;
512 -- Process string literal value from argument
514 procedure Process_Casing
(Arg
: Node_Id
);
515 -- Process Casing argument of pattern form of pragma
517 procedure Process_Dot_Replacement
(Arg
: Node_Id
);
518 -- Process Dot_Replacement argument of patterm form of pragma
524 function Get_Fname
(Arg
: Node_Id
) return Name_Id
is
526 String_To_Name_Buffer
(Strval
(Expression
(Arg
)));
528 for J
in 1 .. Name_Len
loop
529 if Is_Directory_Separator
(Name_Buffer
(J
)) then
531 ("directory separator character not allowed",
532 Sloc
(Expression
(Arg
)) + Source_Ptr
(J
));
539 -------------------------
540 -- Get_String_Argument --
541 -------------------------
543 function Get_String_Argument
(Arg
: Node_Id
) return String_Ptr
is
547 if Nkind
(Expression
(Arg
)) /= N_String_Literal
549 Nkind
(Expression
(Arg
)) /= N_Operator_Symbol
552 ("argument for pragma% must be string literal", Arg
);
556 Str
:= Strval
(Expression
(Arg
));
558 -- Check string has no wide chars
560 for J
in 1 .. String_Length
(Str
) loop
561 if Get_String_Char
(Str
, J
) > 255 then
563 ("wide character not allowed in pattern for pragma%",
564 Sloc
(Expression
(Arg2
)) + Text_Ptr
(J
) - 1);
570 String_To_Name_Buffer
(Str
);
571 return new String'(Name_Buffer (1 .. Name_Len));
572 end Get_String_Argument;
578 procedure Process_Casing (Arg : Node_Id) is
579 Expr : constant Node_Id := Expression (Arg);
582 Check_Required_Identifier (Arg, Name_Casing);
584 if Nkind (Expr) = N_Identifier then
585 if Chars (Expr) = Name_Lowercase then
586 Cas := All_Lower_Case;
588 elsif Chars (Expr) = Name_Uppercase then
589 Cas := All_Upper_Case;
591 elsif Chars (Expr) = Name_Mixedcase then
598 ("Casing argument for pragma% must be " &
599 "one of Mixedcase, Lowercase, Uppercase",
603 -----------------------------
604 -- Process_Dot_Replacement --
605 -----------------------------
607 procedure Process_Dot_Replacement (Arg : Node_Id) is
609 Check_Required_Identifier (Arg, Name_Dot_Replacement);
610 Dot := Get_String_Argument (Arg);
611 end Process_Dot_Replacement;
613 -- Start of processing for Source_File_Name and
614 -- Source_File_Name_Project pragmas.
617 if Get_Pragma_Id (Pragma_Name) = Pragma_Source_File_Name then
618 if Project_File_In_Use = In_Use then
620 ("pragma Source_File_Name cannot be used " &
621 "with a project file", Pragma_Sloc);
624 Project_File_In_Use := Not_In_Use;
628 if Project_File_In_Use = Not_In_Use then
630 ("pragma Source_File_Name_Project should only be used " &
631 "with a project file", Pragma_Sloc);
633 Project_File_In_Use := In_Use;
637 -- We permit from 1 to 3 arguments
639 if Arg_Count not in 1 .. 3 then
643 Expr1 := Expression (Arg1);
645 -- If first argument is identifier or selected component, then
646 -- we have the specific file case of the Source_File_Name pragma,
647 -- and the first argument is a unit name.
649 if Nkind (Expr1) = N_Identifier
651 (Nkind (Expr1) = N_Selected_Component
653 Nkind (Selector_Name (Expr1)) = N_Identifier)
655 if Nkind (Expr1) = N_Identifier
656 and then Chars (Expr1) = Name_System
659 ("pragma Source_File_Name may not be used for System",
664 -- Process index argument if present
666 if Arg_Count = 3 then
667 Expr := Expression (Arg3);
669 if Nkind (Expr) /= N_Integer_Literal
670 or else not UI_Is_In_Int_Range (Intval (Expr))
671 or else Intval (Expr) > 999
672 or else Intval (Expr) <= 0
675 ("pragma% index must be integer literal" &
676 " in range 1 .. 999", Sloc (Expr));
679 Index := UI_To_Int (Intval (Expr));
682 -- No index argument present
689 Check_Optional_Identifier (Arg1, Name_Unit_Name);
690 Unam := Get_Unit_Name (Expr1);
692 Check_Arg_Is_String_Literal (Arg2);
694 if Chars (Arg2) = Name_Spec_File_Name then
696 (Get_Spec_Name (Unam), Get_Fname (Arg2), Index);
698 elsif Chars (Arg2) = Name_Body_File_Name then
700 (Unam, Get_Fname (Arg2), Index);
704 ("pragma% argument has incorrect identifier", Arg2);
708 -- If the first argument is not an identifier, then we must have
709 -- the pattern form of the pragma, and the first argument must be
710 -- the pattern string with an appropriate name.
713 if Chars (Arg1) = Name_Spec_File_Name then
716 elsif Chars (Arg1) = Name_Body_File_Name then
719 elsif Chars (Arg1) = Name_Subunit_File_Name then
722 elsif Chars (Arg1) = Name_Unit_Name then
724 ("Unit_Name parameter for pragma% must be an identifier",
730 ("pragma% argument has incorrect identifier", Arg1);
734 Pat := Get_String_Argument (Arg1);
736 -- Check pattern has exactly one asterisk
739 for J in Pat'Range loop
740 if Pat (J) = '*' then
747 ("file name pattern must have exactly one * character",
752 -- Set defaults for Casing and Dot_Separator parameters
754 Cas := All_Lower_Case;
755 Dot := new String'(".");
757 -- Process second and third arguments if present
759 if Arg_Count
> 1 then
760 if Chars
(Arg2
) = Name_Casing
then
761 Process_Casing
(Arg2
);
763 if Arg_Count
= 3 then
764 Process_Dot_Replacement
(Arg3
);
768 Process_Dot_Replacement
(Arg2
);
770 if Arg_Count
= 3 then
771 Process_Casing
(Arg3
);
776 Set_File_Name_Pattern
(Pat
, Typ
, Dot
, Cas
);
778 end Source_File_Name
;
780 -----------------------------
781 -- Source_Reference (GNAT) --
782 -----------------------------
784 -- pragma Source_Reference
785 -- (INTEGER_LITERAL [, STRING_LITERAL] );
787 -- Processing for this pragma must be done at parse time, since error
788 -- messages needing the proper line numbers can be generated in parse
789 -- only mode with semantic checking turned off, and indeed we usually
790 -- turn off semantic checking anyway if any parse errors are found.
792 when Pragma_Source_Reference
=> Source_Reference
: declare
796 if Arg_Count
/= 1 then
798 Check_No_Identifier
(Arg2
);
801 -- Check that this is first line of file. We skip this test if
802 -- we are in syntax check only mode, since we may be dealing with
803 -- multiple compilation units.
805 if Get_Physical_Line_Number
(Pragma_Sloc
) /= 1
806 and then Num_SRef_Pragmas
(Current_Source_File
) = 0
807 and then Operating_Mode
/= Check_Syntax
810 ("first % pragma must be first line of file", Pragma_Sloc
);
814 Check_No_Identifier
(Arg1
);
816 if Arg_Count
= 1 then
817 if Num_SRef_Pragmas
(Current_Source_File
) = 0 then
819 ("file name required for first % pragma in file",
829 Check_Arg_Is_String_Literal
(Arg2
);
830 String_To_Name_Buffer
(Strval
(Expression
(Arg2
)));
833 if Num_SRef_Pragmas
(Current_Source_File
) > 0 then
834 if Fname
/= Full_Ref_Name
(Current_Source_File
) then
836 ("file name must be same in all % pragmas", Pragma_Sloc
);
842 if Nkind
(Expression
(Arg1
)) /= N_Integer_Literal
then
844 ("argument for pragma% must be integer literal",
845 Sloc
(Expression
(Arg1
)));
848 -- OK, this source reference pragma is effective, however, we
849 -- ignore it if it is not in the first unit in the multiple unit
850 -- case. This is because the only purpose in this case is to
851 -- provide source pragmas for subsequent use by gnatchop.
854 if Num_Library_Units
= 1 then
855 Register_Source_Ref_Pragma
857 Strip_Directory
(Fname
),
858 UI_To_Int
(Intval
(Expression
(Arg1
))),
859 Get_Physical_Line_Number
(Pragma_Sloc
) + 1);
862 end Source_Reference
;
864 -------------------------
865 -- Style_Checks (GNAT) --
866 -------------------------
868 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
870 -- This is processed by the parser since some of the style
871 -- checks take place during source scanning and parsing.
873 when Pragma_Style_Checks
=> Style_Checks
: declare
877 OK
: Boolean := True;
880 -- Two argument case is only for semantics
882 if Arg_Count
= 2 then
887 Check_No_Identifier
(Arg1
);
888 A
:= Expression
(Arg1
);
890 if Nkind
(A
) = N_String_Literal
then
894 Slen
: constant Natural := Natural (String_Length
(S
));
895 Options
: String (1 .. Slen
);
902 C
:= Get_String_Char
(S
, Int
(J
));
904 if not In_Character_Range
(C
) then
910 Options
(J
) := Get_Character
(C
);
914 Set_Style_Check_Options
(Options
, OK
, Ptr
);
924 ("invalid style check option",
925 Sloc
(Expression
(Arg1
)) + Source_Ptr
(Ptr
));
930 elsif Nkind
(A
) /= N_Identifier
then
933 elsif Chars
(A
) = Name_All_Checks
then
934 Stylesw
.Set_Default_Style_Check_Options
;
936 elsif Chars
(A
) = Name_On
then
939 elsif Chars
(A
) = Name_Off
then
940 Style_Check
:= False;
947 Error_Msg
("incorrect argument for pragma%", Sloc
(A
));
953 ---------------------
954 -- Warnings (GNAT) --
955 ---------------------
957 -- pragma Warnings (On | Off, [LOCAL_NAME])
959 -- The one argument case is processed by the parser, since it may
960 -- control parser warnings as well as semantic warnings, and in any
961 -- case we want to be absolutely sure that the range in the warnings
962 -- table is set well before any semantic analysis is performed.
964 when Pragma_Warnings
=>
965 if Arg_Count
= 1 then
966 Check_No_Identifier
(Arg1
);
967 Check_Arg_Is_On_Or_Off
(Arg1
);
969 if Chars
(Expression
(Arg1
)) = Name_On
then
970 Set_Warnings_Mode_On
(Pragma_Sloc
);
972 Set_Warnings_Mode_Off
(Pragma_Sloc
);
976 -----------------------
977 -- All Other Pragmas --
978 -----------------------
980 -- For all other pragmas, checking and processing is handled
981 -- entirely in Sem_Prag, and no further checking is done by Par.
983 when Pragma_Abort_Defer |
985 Pragma_All_Calls_Remote |
988 Pragma_Asynchronous |
990 Pragma_Atomic_Components |
991 Pragma_Attach_Handler |
992 Pragma_Compile_Time_Warning |
993 Pragma_Convention_Identifier |
995 Pragma_CPP_Constructor |
998 Pragma_C_Pass_By_Copy |
1000 Pragma_Common_Object |
1001 Pragma_Complex_Representation |
1002 Pragma_Component_Alignment |
1005 Pragma_Detect_Blocking |
1006 Pragma_Discard_Names |
1009 Pragma_Elaborate_All |
1010 Pragma_Elaborate_Body |
1011 Pragma_Elaboration_Checks |
1012 Pragma_Explicit_Overriding |
1014 Pragma_Export_Exception |
1015 Pragma_Export_Function |
1016 Pragma_Export_Object |
1017 Pragma_Export_Procedure |
1018 Pragma_Export_Value |
1019 Pragma_Export_Valued_Procedure |
1020 Pragma_Extend_System |
1022 Pragma_External_Name_Casing |
1023 Pragma_Finalize_Storage_Only |
1024 Pragma_Float_Representation |
1027 Pragma_Import_Exception |
1028 Pragma_Import_Function |
1029 Pragma_Import_Object |
1030 Pragma_Import_Procedure |
1031 Pragma_Import_Valued_Procedure |
1032 Pragma_Initialize_Scalars |
1034 Pragma_Inline_Always |
1035 Pragma_Inline_Generic |
1036 Pragma_Inspection_Point |
1038 Pragma_Interface_Name |
1039 Pragma_Interrupt_Handler |
1040 Pragma_Interrupt_State |
1041 Pragma_Interrupt_Priority |
1042 Pragma_Java_Constructor |
1043 Pragma_Java_Interface |
1047 Pragma_Linker_Alias |
1048 Pragma_Linker_Options |
1049 Pragma_Linker_Section |
1050 Pragma_Locking_Policy |
1052 Pragma_Machine_Attribute |
1054 Pragma_Main_Storage |
1055 Pragma_Memory_Size |
1057 Pragma_Obsolescent |
1058 Pragma_No_Run_Time |
1059 Pragma_No_Strict_Aliasing |
1060 Pragma_Normalize_Scalars |
1062 Pragma_Optional_Overriding |
1067 Pragma_Persistent_Data |
1068 Pragma_Persistent_Object |
1069 Pragma_Preelaborate |
1072 Pragma_Profile_Warnings |
1073 Pragma_Propagate_Exceptions |
1074 Pragma_Psect_Object |
1076 Pragma_Pure_Function |
1077 Pragma_Queuing_Policy |
1078 Pragma_Remote_Call_Interface |
1079 Pragma_Remote_Types |
1080 Pragma_Restricted_Run_Time |
1083 Pragma_Share_Generic |
1085 Pragma_Shared_Passive |
1086 Pragma_Storage_Size |
1087 Pragma_Storage_Unit |
1088 Pragma_Stream_Convert |
1091 Pragma_Suppress_All |
1092 Pragma_Suppress_Debug_Info |
1093 Pragma_Suppress_Exception_Locations |
1094 Pragma_Suppress_Initialization |
1095 Pragma_System_Name |
1096 Pragma_Task_Dispatching_Policy |
1099 Pragma_Task_Storage |
1100 Pragma_Thread_Body |
1103 Pragma_Unchecked_Union |
1104 Pragma_Unimplemented_Unit |
1105 Pragma_Universal_Data |
1106 Pragma_Unreferenced |
1107 Pragma_Unreserve_All_Interrupts |
1109 Pragma_Use_VADS_Size |
1111 Pragma_Volatile_Components |
1112 Pragma_Weak_External |
1113 Pragma_Validity_Checks
=>
1116 --------------------
1117 -- Unknown_Pragma --
1118 --------------------
1120 -- Should be impossible, since we excluded this case earlier on
1122 when Unknown_Pragma
=>
1123 raise Program_Error
;
1129 --------------------
1130 -- Error Handling --
1131 --------------------
1134 when Error_Resync
=>