1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2010, 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 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. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- This unit contains the semantic processing for all pragmas, both language
27 -- and implementation defined. For most pragmas, the parser only does the
28 -- most basic job of checking the syntax, so Sem_Prag also contains the code
29 -- to complete the syntax checks. Certain pragmas are handled partially or
30 -- completely by the parser (see Par.Prag for further details).
32 with Atree
; use Atree
;
33 with Casing
; use Casing
;
34 with Checks
; use Checks
;
35 with Csets
; use Csets
;
36 with Debug
; use Debug
;
37 with Einfo
; use Einfo
;
38 with Elists
; use Elists
;
39 with Errout
; use Errout
;
40 with Exp_Dist
; use Exp_Dist
;
42 with Lib
.Writ
; use Lib
.Writ
;
43 with Lib
.Xref
; use Lib
.Xref
;
44 with Namet
.Sp
; use Namet
.Sp
;
45 with Nlists
; use Nlists
;
46 with Nmake
; use Nmake
;
48 with Output
; use Output
;
49 with Par_SCO
; use Par_SCO
;
50 with Restrict
; use Restrict
;
51 with Rident
; use Rident
;
52 with Rtsfind
; use Rtsfind
;
54 with Sem_Aux
; use Sem_Aux
;
55 with Sem_Ch3
; use Sem_Ch3
;
56 with Sem_Ch6
; use Sem_Ch6
;
57 with Sem_Ch8
; use Sem_Ch8
;
58 with Sem_Ch12
; use Sem_Ch12
;
59 with Sem_Ch13
; use Sem_Ch13
;
60 with Sem_Dist
; use Sem_Dist
;
61 with Sem_Elim
; use Sem_Elim
;
62 with Sem_Eval
; use Sem_Eval
;
63 with Sem_Intr
; use Sem_Intr
;
64 with Sem_Mech
; use Sem_Mech
;
65 with Sem_Res
; use Sem_Res
;
66 with Sem_Type
; use Sem_Type
;
67 with Sem_Util
; use Sem_Util
;
68 with Sem_VFpt
; use Sem_VFpt
;
69 with Sem_Warn
; use Sem_Warn
;
70 with Stand
; use Stand
;
71 with Sinfo
; use Sinfo
;
72 with Sinfo
.CN
; use Sinfo
.CN
;
73 with Sinput
; use Sinput
;
74 with Snames
; use Snames
;
75 with Stringt
; use Stringt
;
76 with Stylesw
; use Stylesw
;
78 with Targparm
; use Targparm
;
79 with Tbuild
; use Tbuild
;
81 with Uintp
; use Uintp
;
82 with Uname
; use Uname
;
83 with Urealp
; use Urealp
;
84 with Validsw
; use Validsw
;
86 package body Sem_Prag
is
88 ----------------------------------------------
89 -- Common Handling of Import-Export Pragmas --
90 ----------------------------------------------
92 -- In the following section, a number of Import_xxx and Export_xxx
93 -- pragmas are defined by GNAT. These are compatible with the DEC
94 -- pragmas of the same name, and all have the following common
95 -- form and processing:
98 -- [Internal =>] LOCAL_NAME
99 -- [, [External =>] EXTERNAL_SYMBOL]
100 -- [, other optional parameters ]);
103 -- [Internal =>] LOCAL_NAME
104 -- [, [External =>] EXTERNAL_SYMBOL]
105 -- [, other optional parameters ]);
107 -- EXTERNAL_SYMBOL ::=
109 -- | static_string_EXPRESSION
111 -- The internal LOCAL_NAME designates the entity that is imported or
112 -- exported, and must refer to an entity in the current declarative
113 -- part (as required by the rules for LOCAL_NAME).
115 -- The external linker name is designated by the External parameter if
116 -- given, or the Internal parameter if not (if there is no External
117 -- parameter, the External parameter is a copy of the Internal name).
119 -- If the External parameter is given as a string, then this string is
120 -- treated as an external name (exactly as though it had been given as an
121 -- External_Name parameter for a normal Import pragma).
123 -- If the External parameter is given as an identifier (or there is no
124 -- External parameter, so that the Internal identifier is used), then
125 -- the external name is the characters of the identifier, translated
126 -- to all upper case letters for OpenVMS versions of GNAT, and to all
127 -- lower case letters for all other versions
129 -- Note: the external name specified or implied by any of these special
130 -- Import_xxx or Export_xxx pragmas override an external or link name
131 -- specified in a previous Import or Export pragma.
133 -- Note: these and all other DEC-compatible GNAT pragmas allow full use of
134 -- named notation, following the standard rules for subprogram calls, i.e.
135 -- parameters can be given in any order if named notation is used, and
136 -- positional and named notation can be mixed, subject to the rule that all
137 -- positional parameters must appear first.
139 -- Note: All these pragmas are implemented exactly following the DEC design
140 -- and implementation and are intended to be fully compatible with the use
141 -- of these pragmas in the DEC Ada compiler.
143 --------------------------------------------
144 -- Checking for Duplicated External Names --
145 --------------------------------------------
147 -- It is suspicious if two separate Export pragmas use the same external
148 -- name. The following table is used to diagnose this situation so that
149 -- an appropriate warning can be issued.
151 -- The Node_Id stored is for the N_String_Literal node created to hold
152 -- the value of the external name. The Sloc of this node is used to
153 -- cross-reference the location of the duplication.
155 package Externals
is new Table
.Table
(
156 Table_Component_Type
=> Node_Id
,
157 Table_Index_Type
=> Int
,
158 Table_Low_Bound
=> 0,
159 Table_Initial
=> 100,
160 Table_Increment
=> 100,
161 Table_Name
=> "Name_Externals");
163 -------------------------------------
164 -- Local Subprograms and Variables --
165 -------------------------------------
167 function Adjust_External_Name_Case
(N
: Node_Id
) return Node_Id
;
168 -- This routine is used for possible casing adjustment of an explicit
169 -- external name supplied as a string literal (the node N), according to
170 -- the casing requirement of Opt.External_Name_Casing. If this is set to
171 -- As_Is, then the string literal is returned unchanged, but if it is set
172 -- to Uppercase or Lowercase, then a new string literal with appropriate
173 -- casing is constructed.
175 function Get_Base_Subprogram
(Def_Id
: Entity_Id
) return Entity_Id
;
176 -- If Def_Id refers to a renamed subprogram, then the base subprogram (the
177 -- original one, following the renaming chain) is returned. Otherwise the
178 -- entity is returned unchanged. Should be in Einfo???
180 function Get_Pragma_Arg
(Arg
: Node_Id
) return Node_Id
;
181 -- All the routines that check pragma arguments take either a pragma
182 -- argument association (in which case the expression of the argument
183 -- association is checked), or the expression directly. The function
184 -- Get_Pragma_Arg is a utility used to deal with these two cases. If Arg
185 -- is a pragma argument association node, then its expression is returned,
186 -- otherwise Arg is returned unchanged.
189 -- This is a dummy function called by the processing for pragma Reviewable.
190 -- It is there for assisting front end debugging. By placing a Reviewable
191 -- pragma in the source program, a breakpoint on rv catches this place in
192 -- the source, allowing convenient stepping to the point of interest.
194 procedure Set_Unit_Name
(N
: Node_Id
; With_Item
: Node_Id
);
195 -- Place semantic information on the argument of an Elaborate/Elaborate_All
196 -- pragma. Entity name for unit and its parents is taken from item in
197 -- previous with_clause that mentions the unit.
199 -------------------------------
200 -- Adjust_External_Name_Case --
201 -------------------------------
203 function Adjust_External_Name_Case
(N
: Node_Id
) return Node_Id
is
207 -- Adjust case of literal if required
209 if Opt
.External_Name_Exp_Casing
= As_Is
then
213 -- Copy existing string
219 for J
in 1 .. String_Length
(Strval
(N
)) loop
220 CC
:= Get_String_Char
(Strval
(N
), J
);
222 if Opt
.External_Name_Exp_Casing
= Uppercase
223 and then CC
>= Get_Char_Code
('a')
224 and then CC
<= Get_Char_Code
('z')
226 Store_String_Char
(CC
- 32);
228 elsif Opt
.External_Name_Exp_Casing
= Lowercase
229 and then CC
>= Get_Char_Code
('A')
230 and then CC
<= Get_Char_Code
('Z')
232 Store_String_Char
(CC
+ 32);
235 Store_String_Char
(CC
);
240 Make_String_Literal
(Sloc
(N
),
241 Strval
=> End_String
);
243 end Adjust_External_Name_Case
;
245 ------------------------------
246 -- Analyze_PPC_In_Decl_Part --
247 ------------------------------
249 procedure Analyze_PPC_In_Decl_Part
(N
: Node_Id
; S
: Entity_Id
) is
250 Arg1
: constant Node_Id
:=
251 First
(Pragma_Argument_Associations
(N
));
252 Arg2
: constant Node_Id
:= Next
(Arg1
);
255 -- Install formals and push subprogram spec onto scope stack so that we
256 -- can see the formals from the pragma.
261 -- Preanalyze the boolean expression, we treat this as a spec expression
262 -- (i.e. similar to a default expression).
264 Preanalyze_Spec_Expression
265 (Get_Pragma_Arg
(Arg1
), Standard_Boolean
);
267 -- If there is a message argument, analyze it the same way
269 if Present
(Arg2
) then
270 Preanalyze_Spec_Expression
271 (Get_Pragma_Arg
(Arg2
), Standard_String
);
274 -- Remove the subprogram from the scope stack now that the pre-analysis
275 -- of the precondition/postcondition is done.
278 end Analyze_PPC_In_Decl_Part
;
284 procedure Analyze_Pragma
(N
: Node_Id
) is
285 Loc
: constant Source_Ptr
:= Sloc
(N
);
286 Pname
: constant Name_Id
:= Pragma_Name
(N
);
289 Pragma_Exit
: exception;
290 -- This exception is used to exit pragma processing completely. It is
291 -- used when an error is detected, and no further processing is
292 -- required. It is also used if an earlier error has left the tree in
293 -- a state where the pragma should not be processed.
296 -- Number of pragma argument associations
302 -- First four pragma arguments (pragma argument association nodes, or
303 -- Empty if the corresponding argument does not exist).
305 type Name_List
is array (Natural range <>) of Name_Id
;
306 type Args_List
is array (Natural range <>) of Node_Id
;
307 -- Types used for arguments to Check_Arg_Order and Gather_Associations
309 procedure Ada_2005_Pragma
;
310 -- Called for pragmas defined in Ada 2005, that are not in Ada 95. In
311 -- Ada 95 mode, these are implementation defined pragmas, so should be
312 -- caught by the No_Implementation_Pragmas restriction
314 procedure Check_Ada_83_Warning
;
315 -- Issues a warning message for the current pragma if operating in Ada
316 -- 83 mode (used for language pragmas that are not a standard part of
317 -- Ada 83). This procedure does not raise Error_Pragma. Also notes use
320 procedure Check_Arg_Count
(Required
: Nat
);
321 -- Check argument count for pragma is equal to given parameter. If not,
322 -- then issue an error message and raise Pragma_Exit.
324 -- Note: all routines whose name is Check_Arg_Is_xxx take an argument
325 -- Arg which can either be a pragma argument association, in which case
326 -- the check is applied to the expression of the association or an
327 -- expression directly.
329 procedure Check_Arg_Is_External_Name
(Arg
: Node_Id
);
330 -- Check that an argument has the right form for an EXTERNAL_NAME
331 -- parameter of an extended import/export pragma. The rule is that the
332 -- name must be an identifier or string literal (in Ada 83 mode) or a
333 -- static string expression (in Ada 95 mode).
335 procedure Check_Arg_Is_Identifier
(Arg
: Node_Id
);
336 -- Check the specified argument Arg to make sure that it is an
337 -- identifier. If not give error and raise Pragma_Exit.
339 procedure Check_Arg_Is_Integer_Literal
(Arg
: Node_Id
);
340 -- Check the specified argument Arg to make sure that it is an integer
341 -- literal. If not give error and raise Pragma_Exit.
343 procedure Check_Arg_Is_Library_Level_Local_Name
(Arg
: Node_Id
);
344 -- Check the specified argument Arg to make sure that it has the proper
345 -- syntactic form for a local name and meets the semantic requirements
346 -- for a local name. The local name is analyzed as part of the
347 -- processing for this call. In addition, the local name is required
348 -- to represent an entity at the library level.
350 procedure Check_Arg_Is_Local_Name
(Arg
: Node_Id
);
351 -- Check the specified argument Arg to make sure that it has the proper
352 -- syntactic form for a local name and meets the semantic requirements
353 -- for a local name. The local name is analyzed as part of the
354 -- processing for this call.
356 procedure Check_Arg_Is_Locking_Policy
(Arg
: Node_Id
);
357 -- Check the specified argument Arg to make sure that it is a valid
358 -- locking policy name. If not give error and raise Pragma_Exit.
360 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
: Name_Id
);
361 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
, N3
: Name_Id
);
362 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
, N3
, N4
: Name_Id
);
363 -- Check the specified argument Arg to make sure that it is an
364 -- identifier whose name matches either N1 or N2 (or N3 if present).
365 -- If not then give error and raise Pragma_Exit.
367 procedure Check_Arg_Is_Queuing_Policy
(Arg
: Node_Id
);
368 -- Check the specified argument Arg to make sure that it is a valid
369 -- queuing policy name. If not give error and raise Pragma_Exit.
371 procedure Check_Arg_Is_Static_Expression
373 Typ
: Entity_Id
:= Empty
);
374 -- Check the specified argument Arg to make sure that it is a static
375 -- expression of the given type (i.e. it will be analyzed and resolved
376 -- using this type, which can be any valid argument to Resolve, e.g.
377 -- Any_Integer is OK). If not, given error and raise Pragma_Exit. If
378 -- Typ is left Empty, then any static expression is allowed.
380 procedure Check_Arg_Is_Task_Dispatching_Policy
(Arg
: Node_Id
);
381 -- Check the specified argument Arg to make sure that it is a valid task
382 -- dispatching policy name. If not give error and raise Pragma_Exit.
384 procedure Check_Arg_Order
(Names
: Name_List
);
385 -- Checks for an instance of two arguments with identifiers for the
386 -- current pragma which are not in the sequence indicated by Names,
387 -- and if so, generates a fatal message about bad order of arguments.
389 procedure Check_At_Least_N_Arguments
(N
: Nat
);
390 -- Check there are at least N arguments present
392 procedure Check_At_Most_N_Arguments
(N
: Nat
);
393 -- Check there are no more than N arguments present
395 procedure Check_Component
(Comp
: Node_Id
);
396 -- Examine Unchecked_Union component for correct use of per-object
397 -- constrained subtypes, and for restrictions on finalizable components.
399 procedure Check_Duplicated_Export_Name
(Nam
: Node_Id
);
400 -- Nam is an N_String_Literal node containing the external name set by
401 -- an Import or Export pragma (or extended Import or Export pragma).
402 -- This procedure checks for possible duplications if this is the export
403 -- case, and if found, issues an appropriate error message.
405 procedure Check_First_Subtype
(Arg
: Node_Id
);
406 -- Checks that Arg, whose expression is an entity name referencing a
407 -- subtype, does not reference a type that is not a first subtype.
409 procedure Check_In_Main_Program
;
410 -- Common checks for pragmas that appear within a main program
411 -- (Priority, Main_Storage, Time_Slice, Relative_Deadline).
413 procedure Check_Interrupt_Or_Attach_Handler
;
414 -- Common processing for first argument of pragma Interrupt_Handler or
415 -- pragma Attach_Handler.
417 procedure Check_Is_In_Decl_Part_Or_Package_Spec
;
418 -- Check that pragma appears in a declarative part, or in a package
419 -- specification, i.e. that it does not occur in a statement sequence
422 procedure Check_No_Identifier
(Arg
: Node_Id
);
423 -- Checks that the given argument does not have an identifier. If
424 -- an identifier is present, then an error message is issued, and
425 -- Pragma_Exit is raised.
427 procedure Check_No_Identifiers
;
428 -- Checks that none of the arguments to the pragma has an identifier.
429 -- If any argument has an identifier, then an error message is issued,
430 -- and Pragma_Exit is raised.
432 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: Name_Id
);
433 -- Checks if the given argument has an identifier, and if so, requires
434 -- it to match the given identifier name. If there is a non-matching
435 -- identifier, then an error message is given and Error_Pragmas raised.
437 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: String);
438 -- Checks if the given argument has an identifier, and if so, requires
439 -- it to match the given identifier name. If there is a non-matching
440 -- identifier, then an error message is given and Error_Pragmas raised.
441 -- In this version of the procedure, the identifier name is given as
442 -- a string with lower case letters.
444 procedure Check_Precondition_Postcondition
(In_Body
: out Boolean);
445 -- Called to process a precondition or postcondition pragma. There are
448 -- The pragma appears after a subprogram spec
450 -- If the corresponding check is not enabled, the pragma is analyzed
451 -- but otherwise ignored and control returns with In_Body set False.
453 -- If the check is enabled, then the first step is to analyze the
454 -- pragma, but this is skipped if the subprogram spec appears within
455 -- a package specification (because this is the case where we delay
456 -- analysis till the end of the spec). Then (whether or not it was
457 -- analyzed), the pragma is chained to the subprogram in question
458 -- (using Spec_PPC_List and Next_Pragma) and control returns to the
459 -- caller with In_Body set False.
461 -- The pragma appears at the start of subprogram body declarations
463 -- In this case an immediate return to the caller is made with
464 -- In_Body set True, and the pragma is NOT analyzed.
466 -- In all other cases, an error message for bad placement is given
468 procedure Check_Static_Constraint
(Constr
: Node_Id
);
469 -- Constr is a constraint from an N_Subtype_Indication node from a
470 -- component constraint in an Unchecked_Union type. This routine checks
471 -- that the constraint is static as required by the restrictions for
474 procedure Check_Valid_Configuration_Pragma
;
475 -- Legality checks for placement of a configuration pragma
477 procedure Check_Valid_Library_Unit_Pragma
;
478 -- Legality checks for library unit pragmas. A special case arises for
479 -- pragmas in generic instances that come from copies of the original
480 -- library unit pragmas in the generic templates. In the case of other
481 -- than library level instantiations these can appear in contexts which
482 -- would normally be invalid (they only apply to the original template
483 -- and to library level instantiations), and they are simply ignored,
484 -- which is implemented by rewriting them as null statements.
486 procedure Check_Variant
(Variant
: Node_Id
);
487 -- Check Unchecked_Union variant for lack of nested variants and
488 -- presence of at least one component.
490 procedure Error_Pragma
(Msg
: String);
491 pragma No_Return
(Error_Pragma
);
492 -- Outputs error message for current pragma. The message contains a %
493 -- that will be replaced with the pragma name, and the flag is placed
494 -- on the pragma itself. Pragma_Exit is then raised.
496 procedure Error_Pragma_Arg
(Msg
: String; Arg
: Node_Id
);
497 pragma No_Return
(Error_Pragma_Arg
);
498 -- Outputs error message for current pragma. The message may contain
499 -- a % that will be replaced with the pragma name. The parameter Arg
500 -- may either be a pragma argument association, in which case the flag
501 -- is placed on the expression of this association, or an expression,
502 -- in which case the flag is placed directly on the expression. The
503 -- message is placed using Error_Msg_N, so the message may also contain
504 -- an & insertion character which will reference the given Arg value.
505 -- After placing the message, Pragma_Exit is raised.
507 procedure Error_Pragma_Arg
(Msg1
, Msg2
: String; Arg
: Node_Id
);
508 pragma No_Return
(Error_Pragma_Arg
);
509 -- Similar to above form of Error_Pragma_Arg except that two messages
510 -- are provided, the second is a continuation comment starting with \.
512 procedure Error_Pragma_Arg_Ident
(Msg
: String; Arg
: Node_Id
);
513 pragma No_Return
(Error_Pragma_Arg_Ident
);
514 -- Outputs error message for current pragma. The message may contain
515 -- a % that will be replaced with the pragma name. The parameter Arg
516 -- must be a pragma argument association with a non-empty identifier
517 -- (i.e. its Chars field must be set), and the error message is placed
518 -- on the identifier. The message is placed using Error_Msg_N so
519 -- the message may also contain an & insertion character which will
520 -- reference the identifier. After placing the message, Pragma_Exit
523 procedure Error_Pragma_Ref
(Msg
: String; Ref
: Entity_Id
);
524 pragma No_Return
(Error_Pragma_Ref
);
525 -- Outputs error message for current pragma. The message may contain
526 -- a % that will be replaced with the pragma name. The parameter Ref
527 -- must be an entity whose name can be referenced by & and sloc by #.
528 -- After placing the message, Pragma_Exit is raised.
530 function Find_Lib_Unit_Name
return Entity_Id
;
531 -- Used for a library unit pragma to find the entity to which the
532 -- library unit pragma applies, returns the entity found.
534 procedure Find_Program_Unit_Name
(Id
: Node_Id
);
535 -- If the pragma is a compilation unit pragma, the id must denote the
536 -- compilation unit in the same compilation, and the pragma must appear
537 -- in the list of preceding or trailing pragmas. If it is a program
538 -- unit pragma that is not a compilation unit pragma, then the
539 -- identifier must be visible.
541 function Find_Unique_Parameterless_Procedure
543 Arg
: Node_Id
) return Entity_Id
;
544 -- Used for a procedure pragma to find the unique parameterless
545 -- procedure identified by Name, returns it if it exists, otherwise
546 -- errors out and uses Arg as the pragma argument for the message.
548 procedure Gather_Associations
550 Args
: out Args_List
);
551 -- This procedure is used to gather the arguments for a pragma that
552 -- permits arbitrary ordering of parameters using the normal rules
553 -- for named and positional parameters. The Names argument is a list
554 -- of Name_Id values that corresponds to the allowed pragma argument
555 -- association identifiers in order. The result returned in Args is
556 -- a list of corresponding expressions that are the pragma arguments.
557 -- Note that this is a list of expressions, not of pragma argument
558 -- associations (Gather_Associations has completely checked all the
559 -- optional identifiers when it returns). An entry in Args is Empty
560 -- on return if the corresponding argument is not present.
562 procedure GNAT_Pragma
;
563 -- Called for all GNAT defined pragmas to check the relevant restriction
564 -- (No_Implementation_Pragmas).
566 function Is_Before_First_Decl
567 (Pragma_Node
: Node_Id
;
568 Decls
: List_Id
) return Boolean;
569 -- Return True if Pragma_Node is before the first declarative item in
570 -- Decls where Decls is the list of declarative items.
572 function Is_Configuration_Pragma
return Boolean;
573 -- Determines if the placement of the current pragma is appropriate
574 -- for a configuration pragma.
576 function Is_In_Context_Clause
return Boolean;
577 -- Returns True if pragma appears within the context clause of a unit,
578 -- and False for any other placement (does not generate any messages).
580 function Is_Static_String_Expression
(Arg
: Node_Id
) return Boolean;
581 -- Analyzes the argument, and determines if it is a static string
582 -- expression, returns True if so, False if non-static or not String.
584 procedure Pragma_Misplaced
;
585 pragma No_Return
(Pragma_Misplaced
);
586 -- Issue fatal error message for misplaced pragma
588 procedure Process_Atomic_Shared_Volatile
;
589 -- Common processing for pragmas Atomic, Shared, Volatile. Note that
590 -- Shared is an obsolete Ada 83 pragma, treated as being identical
591 -- in effect to pragma Atomic.
593 procedure Process_Compile_Time_Warning_Or_Error
;
594 -- Common processing for Compile_Time_Error and Compile_Time_Warning
596 procedure Process_Convention
597 (C
: out Convention_Id
;
598 Ent
: out Entity_Id
);
599 -- Common processing for Convention, Interface, Import and Export.
600 -- Checks first two arguments of pragma, and sets the appropriate
601 -- convention value in the specified entity or entities. On return
602 -- C is the convention, Ent is the referenced entity.
604 procedure Process_Extended_Import_Export_Exception_Pragma
605 (Arg_Internal
: Node_Id
;
606 Arg_External
: Node_Id
;
609 -- Common processing for the pragmas Import/Export_Exception. The three
610 -- arguments correspond to the three named parameters of the pragma. An
611 -- argument is empty if the corresponding parameter is not present in
614 procedure Process_Extended_Import_Export_Object_Pragma
615 (Arg_Internal
: Node_Id
;
616 Arg_External
: Node_Id
;
618 -- Common processing for the pragmas Import/Export_Object. The three
619 -- arguments correspond to the three named parameters of the pragmas. An
620 -- argument is empty if the corresponding parameter is not present in
623 procedure Process_Extended_Import_Export_Internal_Arg
624 (Arg_Internal
: Node_Id
:= Empty
);
625 -- Common processing for all extended Import and Export pragmas. The
626 -- argument is the pragma parameter for the Internal argument. If
627 -- Arg_Internal is empty or inappropriate, an error message is posted.
628 -- Otherwise, on normal return, the Entity_Field of Arg_Internal is
629 -- set to identify the referenced entity.
631 procedure Process_Extended_Import_Export_Subprogram_Pragma
632 (Arg_Internal
: Node_Id
;
633 Arg_External
: Node_Id
;
634 Arg_Parameter_Types
: Node_Id
;
635 Arg_Result_Type
: Node_Id
:= Empty
;
636 Arg_Mechanism
: Node_Id
;
637 Arg_Result_Mechanism
: Node_Id
:= Empty
;
638 Arg_First_Optional_Parameter
: Node_Id
:= Empty
);
639 -- Common processing for all extended Import and Export pragmas applying
640 -- to subprograms. The caller omits any arguments that do not apply to
641 -- the pragma in question (for example, Arg_Result_Type can be non-Empty
642 -- only in the Import_Function and Export_Function cases). The argument
643 -- names correspond to the allowed pragma association identifiers.
645 procedure Process_Generic_List
;
646 -- Common processing for Share_Generic and Inline_Generic
648 procedure Process_Import_Or_Interface
;
649 -- Common processing for Import of Interface
651 procedure Process_Inline
(Active
: Boolean);
652 -- Common processing for Inline and Inline_Always. The parameter
653 -- indicates if the inline pragma is active, i.e. if it should actually
654 -- cause inlining to occur.
656 procedure Process_Interface_Name
657 (Subprogram_Def
: Entity_Id
;
660 -- Given the last two arguments of pragma Import, pragma Export, or
661 -- pragma Interface_Name, performs validity checks and sets the
662 -- Interface_Name field of the given subprogram entity to the
663 -- appropriate external or link name, depending on the arguments given.
664 -- Ext_Arg is always present, but Link_Arg may be missing. Note that
665 -- Ext_Arg may represent the Link_Name if Link_Arg is missing, and
666 -- appropriate named notation is used for Ext_Arg. If neither Ext_Arg
667 -- nor Link_Arg is present, the interface name is set to the default
668 -- from the subprogram name.
670 procedure Process_Interrupt_Or_Attach_Handler
;
671 -- Common processing for Interrupt and Attach_Handler pragmas
673 procedure Process_Restrictions_Or_Restriction_Warnings
(Warn
: Boolean);
674 -- Common processing for Restrictions and Restriction_Warnings pragmas.
675 -- Warn is True for Restriction_Warnings, or for Restrictions if the
676 -- flag Treat_Restrictions_As_Warnings is set, and False if this flag
677 -- is not set in the Restrictions case.
679 procedure Process_Suppress_Unsuppress
(Suppress_Case
: Boolean);
680 -- Common processing for Suppress and Unsuppress. The boolean parameter
681 -- Suppress_Case is True for the Suppress case, and False for the
684 procedure Set_Exported
(E
: Entity_Id
; Arg
: Node_Id
);
685 -- This procedure sets the Is_Exported flag for the given entity,
686 -- checking that the entity was not previously imported. Arg is
687 -- the argument that specified the entity. A check is also made
688 -- for exporting inappropriate entities.
690 procedure Set_Extended_Import_Export_External_Name
691 (Internal_Ent
: Entity_Id
;
692 Arg_External
: Node_Id
);
693 -- Common processing for all extended import export pragmas. The first
694 -- argument, Internal_Ent, is the internal entity, which has already
695 -- been checked for validity by the caller. Arg_External is from the
696 -- Import or Export pragma, and may be null if no External parameter
697 -- was present. If Arg_External is present and is a non-null string
698 -- (a null string is treated as the default), then the Interface_Name
699 -- field of Internal_Ent is set appropriately.
701 procedure Set_Imported
(E
: Entity_Id
);
702 -- This procedure sets the Is_Imported flag for the given entity,
703 -- checking that it is not previously exported or imported.
705 procedure Set_Mechanism_Value
(Ent
: Entity_Id
; Mech_Name
: Node_Id
);
706 -- Mech is a parameter passing mechanism (see Import_Function syntax
707 -- for MECHANISM_NAME). This routine checks that the mechanism argument
708 -- has the right form, and if not issues an error message. If the
709 -- argument has the right form then the Mechanism field of Ent is
710 -- set appropriately.
712 procedure Set_Ravenscar_Profile
(N
: Node_Id
);
713 -- Activate the set of configuration pragmas and restrictions that make
714 -- up the Ravenscar Profile. N is the corresponding pragma node, which
715 -- is used for error messages on any constructs that violate the
718 ---------------------
719 -- Ada_2005_Pragma --
720 ---------------------
722 procedure Ada_2005_Pragma
is
724 if Ada_Version
<= Ada_95
then
725 Check_Restriction
(No_Implementation_Pragmas
, N
);
729 --------------------------
730 -- Check_Ada_83_Warning --
731 --------------------------
733 procedure Check_Ada_83_Warning
is
735 if Ada_Version
= Ada_83
and then Comes_From_Source
(N
) then
736 Error_Msg_N
("(Ada 83) pragma& is non-standard?", N
);
738 end Check_Ada_83_Warning
;
740 ---------------------
741 -- Check_Arg_Count --
742 ---------------------
744 procedure Check_Arg_Count
(Required
: Nat
) is
746 if Arg_Count
/= Required
then
747 Error_Pragma
("wrong number of arguments for pragma%");
751 --------------------------------
752 -- Check_Arg_Is_External_Name --
753 --------------------------------
755 procedure Check_Arg_Is_External_Name
(Arg
: Node_Id
) is
756 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
759 if Nkind
(Argx
) = N_Identifier
then
763 Analyze_And_Resolve
(Argx
, Standard_String
);
765 if Is_OK_Static_Expression
(Argx
) then
768 elsif Etype
(Argx
) = Any_Type
then
771 -- An interesting special case, if we have a string literal and
772 -- we are in Ada 83 mode, then we allow it even though it will
773 -- not be flagged as static. This allows expected Ada 83 mode
774 -- use of external names which are string literals, even though
775 -- technically these are not static in Ada 83.
777 elsif Ada_Version
= Ada_83
778 and then Nkind
(Argx
) = N_String_Literal
782 -- Static expression that raises Constraint_Error. This has
783 -- already been flagged, so just exit from pragma processing.
785 elsif Is_Static_Expression
(Argx
) then
788 -- Here we have a real error (non-static expression)
791 Error_Msg_Name_1
:= Pname
;
793 ("argument for pragma% must be a identifier or " &
794 "static string expression!", Argx
);
798 end Check_Arg_Is_External_Name
;
800 -----------------------------
801 -- Check_Arg_Is_Identifier --
802 -----------------------------
804 procedure Check_Arg_Is_Identifier
(Arg
: Node_Id
) is
805 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
807 if Nkind
(Argx
) /= N_Identifier
then
809 ("argument for pragma% must be identifier", Argx
);
811 end Check_Arg_Is_Identifier
;
813 ----------------------------------
814 -- Check_Arg_Is_Integer_Literal --
815 ----------------------------------
817 procedure Check_Arg_Is_Integer_Literal
(Arg
: Node_Id
) is
818 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
820 if Nkind
(Argx
) /= N_Integer_Literal
then
822 ("argument for pragma% must be integer literal", Argx
);
824 end Check_Arg_Is_Integer_Literal
;
826 -------------------------------------------
827 -- Check_Arg_Is_Library_Level_Local_Name --
828 -------------------------------------------
832 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
833 -- | library_unit_NAME
835 procedure Check_Arg_Is_Library_Level_Local_Name
(Arg
: Node_Id
) is
837 Check_Arg_Is_Local_Name
(Arg
);
839 if not Is_Library_Level_Entity
(Entity
(Expression
(Arg
)))
840 and then Comes_From_Source
(N
)
843 ("argument for pragma% must be library level entity", Arg
);
845 end Check_Arg_Is_Library_Level_Local_Name
;
847 -----------------------------
848 -- Check_Arg_Is_Local_Name --
849 -----------------------------
853 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
854 -- | library_unit_NAME
856 procedure Check_Arg_Is_Local_Name
(Arg
: Node_Id
) is
857 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
862 if Nkind
(Argx
) not in N_Direct_Name
863 and then (Nkind
(Argx
) /= N_Attribute_Reference
864 or else Present
(Expressions
(Argx
))
865 or else Nkind
(Prefix
(Argx
)) /= N_Identifier
)
866 and then (not Is_Entity_Name
(Argx
)
867 or else not Is_Compilation_Unit
(Entity
(Argx
)))
869 Error_Pragma_Arg
("argument for pragma% must be local name", Argx
);
872 if Is_Entity_Name
(Argx
)
873 and then Scope
(Entity
(Argx
)) /= Current_Scope
876 ("pragma% argument must be in same declarative part", Arg
);
878 end Check_Arg_Is_Local_Name
;
880 ---------------------------------
881 -- Check_Arg_Is_Locking_Policy --
882 ---------------------------------
884 procedure Check_Arg_Is_Locking_Policy
(Arg
: Node_Id
) is
885 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
888 Check_Arg_Is_Identifier
(Argx
);
890 if not Is_Locking_Policy_Name
(Chars
(Argx
)) then
892 ("& is not a valid locking policy name", Argx
);
894 end Check_Arg_Is_Locking_Policy
;
896 -------------------------
897 -- Check_Arg_Is_One_Of --
898 -------------------------
900 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
: Name_Id
) is
901 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
904 Check_Arg_Is_Identifier
(Argx
);
906 if Chars
(Argx
) /= N1
and then Chars
(Argx
) /= N2
then
907 Error_Msg_Name_2
:= N1
;
908 Error_Msg_Name_3
:= N2
;
909 Error_Pragma_Arg
("argument for pragma% must be% or%", Argx
);
911 end Check_Arg_Is_One_Of
;
913 procedure Check_Arg_Is_One_Of
915 N1
, N2
, N3
: Name_Id
)
917 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
920 Check_Arg_Is_Identifier
(Argx
);
922 if Chars
(Argx
) /= N1
923 and then Chars
(Argx
) /= N2
924 and then Chars
(Argx
) /= N3
926 Error_Pragma_Arg
("invalid argument for pragma%", Argx
);
928 end Check_Arg_Is_One_Of
;
930 procedure Check_Arg_Is_One_Of
932 N1
, N2
, N3
, N4
: Name_Id
)
934 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
937 Check_Arg_Is_Identifier
(Argx
);
939 if Chars
(Argx
) /= N1
940 and then Chars
(Argx
) /= N2
941 and then Chars
(Argx
) /= N3
942 and then Chars
(Argx
) /= N4
944 Error_Pragma_Arg
("invalid argument for pragma%", Argx
);
946 end Check_Arg_Is_One_Of
;
948 ---------------------------------
949 -- Check_Arg_Is_Queuing_Policy --
950 ---------------------------------
952 procedure Check_Arg_Is_Queuing_Policy
(Arg
: Node_Id
) is
953 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
956 Check_Arg_Is_Identifier
(Argx
);
958 if not Is_Queuing_Policy_Name
(Chars
(Argx
)) then
960 ("& is not a valid queuing policy name", Argx
);
962 end Check_Arg_Is_Queuing_Policy
;
964 ------------------------------------
965 -- Check_Arg_Is_Static_Expression --
966 ------------------------------------
968 procedure Check_Arg_Is_Static_Expression
970 Typ
: Entity_Id
:= Empty
)
972 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
975 if Present
(Typ
) then
976 Analyze_And_Resolve
(Argx
, Typ
);
978 Analyze_And_Resolve
(Argx
);
981 if Is_OK_Static_Expression
(Argx
) then
984 elsif Etype
(Argx
) = Any_Type
then
987 -- An interesting special case, if we have a string literal and we
988 -- are in Ada 83 mode, then we allow it even though it will not be
989 -- flagged as static. This allows the use of Ada 95 pragmas like
990 -- Import in Ada 83 mode. They will of course be flagged with
991 -- warnings as usual, but will not cause errors.
993 elsif Ada_Version
= Ada_83
994 and then Nkind
(Argx
) = N_String_Literal
998 -- Static expression that raises Constraint_Error. This has already
999 -- been flagged, so just exit from pragma processing.
1001 elsif Is_Static_Expression
(Argx
) then
1004 -- Finally, we have a real error
1007 Error_Msg_Name_1
:= Pname
;
1008 Flag_Non_Static_Expr
1009 ("argument for pragma% must be a static expression!", Argx
);
1012 end Check_Arg_Is_Static_Expression
;
1014 ------------------------------------------
1015 -- Check_Arg_Is_Task_Dispatching_Policy --
1016 ------------------------------------------
1018 procedure Check_Arg_Is_Task_Dispatching_Policy
(Arg
: Node_Id
) is
1019 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
1022 Check_Arg_Is_Identifier
(Argx
);
1024 if not Is_Task_Dispatching_Policy_Name
(Chars
(Argx
)) then
1026 ("& is not a valid task dispatching policy name", Argx
);
1028 end Check_Arg_Is_Task_Dispatching_Policy
;
1030 ---------------------
1031 -- Check_Arg_Order --
1032 ---------------------
1034 procedure Check_Arg_Order
(Names
: Name_List
) is
1037 Highest_So_Far
: Natural := 0;
1038 -- Highest index in Names seen do far
1042 for J
in 1 .. Arg_Count
loop
1043 if Chars
(Arg
) /= No_Name
then
1044 for K
in Names
'Range loop
1045 if Chars
(Arg
) = Names
(K
) then
1046 if K
< Highest_So_Far
then
1047 Error_Msg_Name_1
:= Pname
;
1049 ("parameters out of order for pragma%", Arg
);
1050 Error_Msg_Name_1
:= Names
(K
);
1051 Error_Msg_Name_2
:= Names
(Highest_So_Far
);
1052 Error_Msg_N
("\% must appear before %", Arg
);
1056 Highest_So_Far
:= K
;
1064 end Check_Arg_Order
;
1066 --------------------------------
1067 -- Check_At_Least_N_Arguments --
1068 --------------------------------
1070 procedure Check_At_Least_N_Arguments
(N
: Nat
) is
1072 if Arg_Count
< N
then
1073 Error_Pragma
("too few arguments for pragma%");
1075 end Check_At_Least_N_Arguments
;
1077 -------------------------------
1078 -- Check_At_Most_N_Arguments --
1079 -------------------------------
1081 procedure Check_At_Most_N_Arguments
(N
: Nat
) is
1084 if Arg_Count
> N
then
1086 for J
in 1 .. N
loop
1088 Error_Pragma_Arg
("too many arguments for pragma%", Arg
);
1091 end Check_At_Most_N_Arguments
;
1093 ---------------------
1094 -- Check_Component --
1095 ---------------------
1097 procedure Check_Component
(Comp
: Node_Id
) is
1099 if Nkind
(Comp
) = N_Component_Declaration
then
1101 Sindic
: constant Node_Id
:=
1102 Subtype_Indication
(Component_Definition
(Comp
));
1103 Typ
: constant Entity_Id
:=
1104 Etype
(Defining_Identifier
(Comp
));
1106 if Nkind
(Sindic
) = N_Subtype_Indication
then
1108 -- Ada 2005 (AI-216): If a component subtype is subject to
1109 -- a per-object constraint, then the component type shall
1110 -- be an Unchecked_Union.
1112 if Has_Per_Object_Constraint
(Defining_Identifier
(Comp
))
1114 not Is_Unchecked_Union
(Etype
(Subtype_Mark
(Sindic
)))
1116 Error_Msg_N
("component subtype subject to per-object" &
1117 " constraint must be an Unchecked_Union", Comp
);
1121 if Is_Controlled
(Typ
) then
1123 ("component of unchecked union cannot be controlled", Comp
);
1125 elsif Has_Task
(Typ
) then
1127 ("component of unchecked union cannot have tasks", Comp
);
1131 end Check_Component
;
1133 ----------------------------------
1134 -- Check_Duplicated_Export_Name --
1135 ----------------------------------
1137 procedure Check_Duplicated_Export_Name
(Nam
: Node_Id
) is
1138 String_Val
: constant String_Id
:= Strval
(Nam
);
1141 -- We are only interested in the export case, and in the case of
1142 -- generics, it is the instance, not the template, that is the
1143 -- problem (the template will generate a warning in any case).
1145 if not Inside_A_Generic
1146 and then (Prag_Id
= Pragma_Export
1148 Prag_Id
= Pragma_Export_Procedure
1150 Prag_Id
= Pragma_Export_Valued_Procedure
1152 Prag_Id
= Pragma_Export_Function
)
1154 for J
in Externals
.First
.. Externals
.Last
loop
1155 if String_Equal
(String_Val
, Strval
(Externals
.Table
(J
))) then
1156 Error_Msg_Sloc
:= Sloc
(Externals
.Table
(J
));
1157 Error_Msg_N
("external name duplicates name given#", Nam
);
1162 Externals
.Append
(Nam
);
1164 end Check_Duplicated_Export_Name
;
1166 -------------------------
1167 -- Check_First_Subtype --
1168 -------------------------
1170 procedure Check_First_Subtype
(Arg
: Node_Id
) is
1171 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
1173 if not Is_First_Subtype
(Entity
(Argx
)) then
1175 ("pragma% cannot apply to subtype", Argx
);
1177 end Check_First_Subtype
;
1179 ---------------------------
1180 -- Check_In_Main_Program --
1181 ---------------------------
1183 procedure Check_In_Main_Program
is
1184 P
: constant Node_Id
:= Parent
(N
);
1187 -- Must be at in subprogram body
1189 if Nkind
(P
) /= N_Subprogram_Body
then
1190 Error_Pragma
("% pragma allowed only in subprogram");
1192 -- Otherwise warn if obviously not main program
1194 elsif Present
(Parameter_Specifications
(Specification
(P
)))
1195 or else not Is_Compilation_Unit
(Defining_Entity
(P
))
1197 Error_Msg_Name_1
:= Pname
;
1199 ("?pragma% is only effective in main program", N
);
1201 end Check_In_Main_Program
;
1203 ---------------------------------------
1204 -- Check_Interrupt_Or_Attach_Handler --
1205 ---------------------------------------
1207 procedure Check_Interrupt_Or_Attach_Handler
is
1208 Arg1_X
: constant Node_Id
:= Expression
(Arg1
);
1209 Handler_Proc
, Proc_Scope
: Entity_Id
;
1214 if Prag_Id
= Pragma_Interrupt_Handler
then
1215 Check_Restriction
(No_Dynamic_Attachment
, N
);
1218 Handler_Proc
:= Find_Unique_Parameterless_Procedure
(Arg1_X
, Arg1
);
1219 Proc_Scope
:= Scope
(Handler_Proc
);
1221 -- On AAMP only, a pragma Interrupt_Handler is supported for
1222 -- nonprotected parameterless procedures.
1224 if not AAMP_On_Target
1225 or else Prag_Id
= Pragma_Attach_Handler
1227 if Ekind
(Proc_Scope
) /= E_Protected_Type
then
1229 ("argument of pragma% must be protected procedure", Arg1
);
1232 if Parent
(N
) /= Protected_Definition
(Parent
(Proc_Scope
)) then
1233 Error_Pragma
("pragma% must be in protected definition");
1237 if not Is_Library_Level_Entity
(Proc_Scope
)
1238 or else (AAMP_On_Target
1239 and then not Is_Library_Level_Entity
(Handler_Proc
))
1242 ("argument for pragma% must be library level entity", Arg1
);
1244 end Check_Interrupt_Or_Attach_Handler
;
1246 -------------------------------------------
1247 -- Check_Is_In_Decl_Part_Or_Package_Spec --
1248 -------------------------------------------
1250 procedure Check_Is_In_Decl_Part_Or_Package_Spec
is
1259 elsif Nkind
(P
) = N_Handled_Sequence_Of_Statements
then
1262 elsif Nkind_In
(P
, N_Package_Specification
,
1267 -- Note: the following tests seem a little peculiar, because
1268 -- they test for bodies, but if we were in the statement part
1269 -- of the body, we would already have hit the handled statement
1270 -- sequence, so the only way we get here is by being in the
1271 -- declarative part of the body.
1273 elsif Nkind_In
(P
, N_Subprogram_Body
,
1284 Error_Pragma
("pragma% is not in declarative part or package spec");
1285 end Check_Is_In_Decl_Part_Or_Package_Spec
;
1287 -------------------------
1288 -- Check_No_Identifier --
1289 -------------------------
1291 procedure Check_No_Identifier
(Arg
: Node_Id
) is
1293 if Chars
(Arg
) /= No_Name
then
1294 Error_Pragma_Arg_Ident
1295 ("pragma% does not permit identifier& here", Arg
);
1297 end Check_No_Identifier
;
1299 --------------------------
1300 -- Check_No_Identifiers --
1301 --------------------------
1303 procedure Check_No_Identifiers
is
1306 if Arg_Count
> 0 then
1308 while Present
(Arg_Node
) loop
1309 Check_No_Identifier
(Arg_Node
);
1313 end Check_No_Identifiers
;
1315 -------------------------------
1316 -- Check_Optional_Identifier --
1317 -------------------------------
1319 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: Name_Id
) is
1321 if Present
(Arg
) and then Chars
(Arg
) /= No_Name
then
1322 if Chars
(Arg
) /= Id
then
1323 Error_Msg_Name_1
:= Pname
;
1324 Error_Msg_Name_2
:= Id
;
1325 Error_Msg_N
("pragma% argument expects identifier%", Arg
);
1329 end Check_Optional_Identifier
;
1331 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: String) is
1333 Name_Buffer
(1 .. Id
'Length) := Id
;
1334 Name_Len
:= Id
'Length;
1335 Check_Optional_Identifier
(Arg
, Name_Find
);
1336 end Check_Optional_Identifier
;
1338 --------------------------------------
1339 -- Check_Precondition_Postcondition --
1340 --------------------------------------
1342 procedure Check_Precondition_Postcondition
(In_Body
: out Boolean) is
1346 procedure Chain_PPC
(PO
: Node_Id
);
1347 -- If PO is a subprogram declaration node (or a generic subprogram
1348 -- declaration node), then the precondition/postcondition applies
1349 -- to this subprogram and the processing for the pragma is completed.
1350 -- Otherwise the pragma is misplaced.
1356 procedure Chain_PPC
(PO
: Node_Id
) is
1360 if not Nkind_In
(PO
, N_Subprogram_Declaration
,
1361 N_Generic_Subprogram_Declaration
)
1366 -- Here if we have subprogram or generic subprogram declaration
1368 S
:= Defining_Unit_Name
(Specification
(PO
));
1370 -- Analyze the pragma unless it appears within a package spec,
1371 -- which is the case where we delay the analysis of the PPC until
1372 -- the end of the package declarations (for details, see
1373 -- Analyze_Package_Specification.Analyze_PPCs).
1375 if not Is_Package_Or_Generic_Package
(Scope
(S
)) then
1376 Analyze_PPC_In_Decl_Part
(N
, S
);
1379 -- Chain spec PPC pragma to list for subprogram
1381 Set_Next_Pragma
(N
, Spec_PPC_List
(S
));
1382 Set_Spec_PPC_List
(S
, N
);
1384 -- Return indicating spec case
1390 -- Start of processing for Check_Precondition_Postcondition
1393 if not Is_List_Member
(N
) then
1397 -- Record if pragma is enabled
1399 if Check_Enabled
(Pname
) then
1400 Set_Pragma_Enabled
(N
);
1401 Set_SCO_Pragma_Enabled
(Loc
);
1404 -- If we are within an inlined body, the legality of the pragma
1405 -- has been checked already.
1407 if In_Inlined_Body
then
1412 -- Search prior declarations
1415 while Present
(Prev
(P
)) loop
1418 -- If the previous node is a generic subprogram, do not go to to
1419 -- the original node, which is the unanalyzed tree: we need to
1420 -- attach the pre/postconditions to the analyzed version at this
1421 -- point. They get propagated to the original tree when analyzing
1422 -- the corresponding body.
1424 if Nkind
(P
) not in N_Generic_Declaration
then
1425 PO
:= Original_Node
(P
);
1430 -- Skip past prior pragma
1432 if Nkind
(PO
) = N_Pragma
then
1435 -- Skip stuff not coming from source
1437 elsif not Comes_From_Source
(PO
) then
1440 -- Only remaining possibility is subprogram declaration
1448 -- If we fall through loop, pragma is at start of list, so see if it
1449 -- is at the start of declarations of a subprogram body.
1451 if Nkind
(Parent
(N
)) = N_Subprogram_Body
1452 and then List_Containing
(N
) = Declarations
(Parent
(N
))
1454 if Operating_Mode
/= Generate_Code
1455 or else Inside_A_Generic
1458 -- Analyze expression in pragma, for correctness
1459 -- and for ASIS use.
1461 Preanalyze_Spec_Expression
1462 (Get_Pragma_Arg
(Arg1
), Standard_Boolean
);
1468 -- See if it is in the pragmas after a library level subprogram
1470 elsif Nkind
(Parent
(N
)) = N_Compilation_Unit_Aux
then
1471 Chain_PPC
(Unit
(Parent
(Parent
(N
))));
1475 -- If we fall through, pragma was misplaced
1478 end Check_Precondition_Postcondition
;
1480 -----------------------------
1481 -- Check_Static_Constraint --
1482 -----------------------------
1484 -- Note: for convenience in writing this procedure, in addition to
1485 -- the officially (i.e. by spec) allowed argument which is always a
1486 -- constraint, it also allows ranges and discriminant associations.
1487 -- Above is not clear ???
1489 procedure Check_Static_Constraint
(Constr
: Node_Id
) is
1491 procedure Require_Static
(E
: Node_Id
);
1492 -- Require given expression to be static expression
1494 --------------------
1495 -- Require_Static --
1496 --------------------
1498 procedure Require_Static
(E
: Node_Id
) is
1500 if not Is_OK_Static_Expression
(E
) then
1501 Flag_Non_Static_Expr
1502 ("non-static constraint not allowed in Unchecked_Union!", E
);
1507 -- Start of processing for Check_Static_Constraint
1510 case Nkind
(Constr
) is
1511 when N_Discriminant_Association
=>
1512 Require_Static
(Expression
(Constr
));
1515 Require_Static
(Low_Bound
(Constr
));
1516 Require_Static
(High_Bound
(Constr
));
1518 when N_Attribute_Reference
=>
1519 Require_Static
(Type_Low_Bound
(Etype
(Prefix
(Constr
))));
1520 Require_Static
(Type_High_Bound
(Etype
(Prefix
(Constr
))));
1522 when N_Range_Constraint
=>
1523 Check_Static_Constraint
(Range_Expression
(Constr
));
1525 when N_Index_Or_Discriminant_Constraint
=>
1529 IDC
:= First
(Constraints
(Constr
));
1530 while Present
(IDC
) loop
1531 Check_Static_Constraint
(IDC
);
1539 end Check_Static_Constraint
;
1541 --------------------------------------
1542 -- Check_Valid_Configuration_Pragma --
1543 --------------------------------------
1545 -- A configuration pragma must appear in the context clause of a
1546 -- compilation unit, and only other pragmas may precede it. Note that
1547 -- the test also allows use in a configuration pragma file.
1549 procedure Check_Valid_Configuration_Pragma
is
1551 if not Is_Configuration_Pragma
then
1552 Error_Pragma
("incorrect placement for configuration pragma%");
1554 end Check_Valid_Configuration_Pragma
;
1556 -------------------------------------
1557 -- Check_Valid_Library_Unit_Pragma --
1558 -------------------------------------
1560 procedure Check_Valid_Library_Unit_Pragma
is
1562 Parent_Node
: Node_Id
;
1563 Unit_Name
: Entity_Id
;
1564 Unit_Kind
: Node_Kind
;
1565 Unit_Node
: Node_Id
;
1566 Sindex
: Source_File_Index
;
1569 if not Is_List_Member
(N
) then
1573 Plist
:= List_Containing
(N
);
1574 Parent_Node
:= Parent
(Plist
);
1576 if Parent_Node
= Empty
then
1579 -- Case of pragma appearing after a compilation unit. In this case
1580 -- it must have an argument with the corresponding name and must
1581 -- be part of the following pragmas of its parent.
1583 elsif Nkind
(Parent_Node
) = N_Compilation_Unit_Aux
then
1584 if Plist
/= Pragmas_After
(Parent_Node
) then
1587 elsif Arg_Count
= 0 then
1589 ("argument required if outside compilation unit");
1592 Check_No_Identifiers
;
1593 Check_Arg_Count
(1);
1594 Unit_Node
:= Unit
(Parent
(Parent_Node
));
1595 Unit_Kind
:= Nkind
(Unit_Node
);
1597 Analyze
(Expression
(Arg1
));
1599 if Unit_Kind
= N_Generic_Subprogram_Declaration
1600 or else Unit_Kind
= N_Subprogram_Declaration
1602 Unit_Name
:= Defining_Entity
(Unit_Node
);
1604 elsif Unit_Kind
in N_Generic_Instantiation
then
1605 Unit_Name
:= Defining_Entity
(Unit_Node
);
1608 Unit_Name
:= Cunit_Entity
(Current_Sem_Unit
);
1611 if Chars
(Unit_Name
) /=
1612 Chars
(Entity
(Expression
(Arg1
)))
1615 ("pragma% argument is not current unit name", Arg1
);
1618 if Ekind
(Unit_Name
) = E_Package
1619 and then Present
(Renamed_Entity
(Unit_Name
))
1621 Error_Pragma
("pragma% not allowed for renamed package");
1625 -- Pragma appears other than after a compilation unit
1628 -- Here we check for the generic instantiation case and also
1629 -- for the case of processing a generic formal package. We
1630 -- detect these cases by noting that the Sloc on the node
1631 -- does not belong to the current compilation unit.
1633 Sindex
:= Source_Index
(Current_Sem_Unit
);
1635 if Loc
not in Source_First
(Sindex
) .. Source_Last
(Sindex
) then
1636 Rewrite
(N
, Make_Null_Statement
(Loc
));
1639 -- If before first declaration, the pragma applies to the
1640 -- enclosing unit, and the name if present must be this name.
1642 elsif Is_Before_First_Decl
(N
, Plist
) then
1643 Unit_Node
:= Unit_Declaration_Node
(Current_Scope
);
1644 Unit_Kind
:= Nkind
(Unit_Node
);
1646 if Nkind
(Parent
(Unit_Node
)) /= N_Compilation_Unit
then
1649 elsif Unit_Kind
= N_Subprogram_Body
1650 and then not Acts_As_Spec
(Unit_Node
)
1654 elsif Nkind
(Parent_Node
) = N_Package_Body
then
1657 elsif Nkind
(Parent_Node
) = N_Package_Specification
1658 and then Plist
= Private_Declarations
(Parent_Node
)
1662 elsif (Nkind
(Parent_Node
) = N_Generic_Package_Declaration
1663 or else Nkind
(Parent_Node
) =
1664 N_Generic_Subprogram_Declaration
)
1665 and then Plist
= Generic_Formal_Declarations
(Parent_Node
)
1669 elsif Arg_Count
> 0 then
1670 Analyze
(Expression
(Arg1
));
1672 if Entity
(Expression
(Arg1
)) /= Current_Scope
then
1674 ("name in pragma% must be enclosing unit", Arg1
);
1677 -- It is legal to have no argument in this context
1683 -- Error if not before first declaration. This is because a
1684 -- library unit pragma argument must be the name of a library
1685 -- unit (RM 10.1.5(7)), but the only names permitted in this
1686 -- context are (RM 10.1.5(6)) names of subprogram declarations,
1687 -- generic subprogram declarations or generic instantiations.
1691 ("pragma% misplaced, must be before first declaration");
1695 end Check_Valid_Library_Unit_Pragma
;
1701 procedure Check_Variant
(Variant
: Node_Id
) is
1702 Clist
: constant Node_Id
:= Component_List
(Variant
);
1706 if not Is_Non_Empty_List
(Component_Items
(Clist
)) then
1708 ("Unchecked_Union may not have empty component list",
1713 Comp
:= First
(Component_Items
(Clist
));
1714 while Present
(Comp
) loop
1715 Check_Component
(Comp
);
1724 procedure Error_Pragma
(Msg
: String) is
1726 Error_Msg_Name_1
:= Pname
;
1727 Error_Msg_N
(Msg
, N
);
1731 ----------------------
1732 -- Error_Pragma_Arg --
1733 ----------------------
1735 procedure Error_Pragma_Arg
(Msg
: String; Arg
: Node_Id
) is
1737 Error_Msg_Name_1
:= Pname
;
1738 Error_Msg_N
(Msg
, Get_Pragma_Arg
(Arg
));
1740 end Error_Pragma_Arg
;
1742 procedure Error_Pragma_Arg
(Msg1
, Msg2
: String; Arg
: Node_Id
) is
1744 Error_Msg_Name_1
:= Pname
;
1745 Error_Msg_N
(Msg1
, Get_Pragma_Arg
(Arg
));
1746 Error_Pragma_Arg
(Msg2
, Arg
);
1747 end Error_Pragma_Arg
;
1749 ----------------------------
1750 -- Error_Pragma_Arg_Ident --
1751 ----------------------------
1753 procedure Error_Pragma_Arg_Ident
(Msg
: String; Arg
: Node_Id
) is
1755 Error_Msg_Name_1
:= Pname
;
1756 Error_Msg_N
(Msg
, Arg
);
1758 end Error_Pragma_Arg_Ident
;
1760 ----------------------
1761 -- Error_Pragma_Ref --
1762 ----------------------
1764 procedure Error_Pragma_Ref
(Msg
: String; Ref
: Entity_Id
) is
1766 Error_Msg_Name_1
:= Pname
;
1767 Error_Msg_Sloc
:= Sloc
(Ref
);
1768 Error_Msg_NE
(Msg
, N
, Ref
);
1770 end Error_Pragma_Ref
;
1772 ------------------------
1773 -- Find_Lib_Unit_Name --
1774 ------------------------
1776 function Find_Lib_Unit_Name
return Entity_Id
is
1778 -- Return inner compilation unit entity, for case of nested
1779 -- categorization pragmas. This happens in generic unit.
1781 if Nkind
(Parent
(N
)) = N_Package_Specification
1782 and then Defining_Entity
(Parent
(N
)) /= Current_Scope
1784 return Defining_Entity
(Parent
(N
));
1786 return Current_Scope
;
1788 end Find_Lib_Unit_Name
;
1790 ----------------------------
1791 -- Find_Program_Unit_Name --
1792 ----------------------------
1794 procedure Find_Program_Unit_Name
(Id
: Node_Id
) is
1795 Unit_Name
: Entity_Id
;
1796 Unit_Kind
: Node_Kind
;
1797 P
: constant Node_Id
:= Parent
(N
);
1800 if Nkind
(P
) = N_Compilation_Unit
then
1801 Unit_Kind
:= Nkind
(Unit
(P
));
1803 if Unit_Kind
= N_Subprogram_Declaration
1804 or else Unit_Kind
= N_Package_Declaration
1805 or else Unit_Kind
in N_Generic_Declaration
1807 Unit_Name
:= Defining_Entity
(Unit
(P
));
1809 if Chars
(Id
) = Chars
(Unit_Name
) then
1810 Set_Entity
(Id
, Unit_Name
);
1811 Set_Etype
(Id
, Etype
(Unit_Name
));
1813 Set_Etype
(Id
, Any_Type
);
1815 ("cannot find program unit referenced by pragma%");
1819 Set_Etype
(Id
, Any_Type
);
1820 Error_Pragma
("pragma% inapplicable to this unit");
1826 end Find_Program_Unit_Name
;
1828 -----------------------------------------
1829 -- Find_Unique_Parameterless_Procedure --
1830 -----------------------------------------
1832 function Find_Unique_Parameterless_Procedure
1834 Arg
: Node_Id
) return Entity_Id
1836 Proc
: Entity_Id
:= Empty
;
1839 -- The body of this procedure needs some comments ???
1841 if not Is_Entity_Name
(Name
) then
1843 ("argument of pragma% must be entity name", Arg
);
1845 elsif not Is_Overloaded
(Name
) then
1846 Proc
:= Entity
(Name
);
1848 if Ekind
(Proc
) /= E_Procedure
1849 or else Present
(First_Formal
(Proc
))
1852 ("argument of pragma% must be parameterless procedure", Arg
);
1857 Found
: Boolean := False;
1859 Index
: Interp_Index
;
1862 Get_First_Interp
(Name
, Index
, It
);
1863 while Present
(It
.Nam
) loop
1866 if Ekind
(Proc
) = E_Procedure
1867 and then No
(First_Formal
(Proc
))
1871 Set_Entity
(Name
, Proc
);
1872 Set_Is_Overloaded
(Name
, False);
1875 ("ambiguous handler name for pragma% ", Arg
);
1879 Get_Next_Interp
(Index
, It
);
1884 ("argument of pragma% must be parameterless procedure",
1887 Proc
:= Entity
(Name
);
1893 end Find_Unique_Parameterless_Procedure
;
1895 -------------------------
1896 -- Gather_Associations --
1897 -------------------------
1899 procedure Gather_Associations
1901 Args
: out Args_List
)
1906 -- Initialize all parameters to Empty
1908 for J
in Args
'Range loop
1912 -- That's all we have to do if there are no argument associations
1914 if No
(Pragma_Argument_Associations
(N
)) then
1918 -- Otherwise first deal with any positional parameters present
1920 Arg
:= First
(Pragma_Argument_Associations
(N
));
1921 for Index
in Args
'Range loop
1922 exit when No
(Arg
) or else Chars
(Arg
) /= No_Name
;
1923 Args
(Index
) := Expression
(Arg
);
1927 -- Positional parameters all processed, if any left, then we
1928 -- have too many positional parameters.
1930 if Present
(Arg
) and then Chars
(Arg
) = No_Name
then
1932 ("too many positional associations for pragma%", Arg
);
1935 -- Process named parameters if any are present
1937 while Present
(Arg
) loop
1938 if Chars
(Arg
) = No_Name
then
1940 ("positional association cannot follow named association",
1944 for Index
in Names
'Range loop
1945 if Names
(Index
) = Chars
(Arg
) then
1946 if Present
(Args
(Index
)) then
1948 ("duplicate argument association for pragma%", Arg
);
1950 Args
(Index
) := Expression
(Arg
);
1955 if Index
= Names
'Last then
1956 Error_Msg_Name_1
:= Pname
;
1957 Error_Msg_N
("pragma% does not allow & argument", Arg
);
1959 -- Check for possible misspelling
1961 for Index1
in Names
'Range loop
1962 if Is_Bad_Spelling_Of
1963 (Chars
(Arg
), Names
(Index1
))
1965 Error_Msg_Name_1
:= Names
(Index1
);
1966 Error_Msg_N
-- CODEFIX
1967 ("\possible misspelling of%", Arg
);
1979 end Gather_Associations
;
1985 procedure GNAT_Pragma
is
1987 Check_Restriction
(No_Implementation_Pragmas
, N
);
1990 --------------------------
1991 -- Is_Before_First_Decl --
1992 --------------------------
1994 function Is_Before_First_Decl
1995 (Pragma_Node
: Node_Id
;
1996 Decls
: List_Id
) return Boolean
1998 Item
: Node_Id
:= First
(Decls
);
2001 -- Only other pragmas can come before this pragma
2004 if No
(Item
) or else Nkind
(Item
) /= N_Pragma
then
2007 elsif Item
= Pragma_Node
then
2013 end Is_Before_First_Decl
;
2015 -----------------------------
2016 -- Is_Configuration_Pragma --
2017 -----------------------------
2019 -- A configuration pragma must appear in the context clause of a
2020 -- compilation unit, and only other pragmas may precede it. Note that
2021 -- the test below also permits use in a configuration pragma file.
2023 function Is_Configuration_Pragma
return Boolean is
2024 Lis
: constant List_Id
:= List_Containing
(N
);
2025 Par
: constant Node_Id
:= Parent
(N
);
2029 -- If no parent, then we are in the configuration pragma file,
2030 -- so the placement is definitely appropriate.
2035 -- Otherwise we must be in the context clause of a compilation unit
2036 -- and the only thing allowed before us in the context list is more
2037 -- configuration pragmas.
2039 elsif Nkind
(Par
) = N_Compilation_Unit
2040 and then Context_Items
(Par
) = Lis
2047 elsif Nkind
(Prg
) /= N_Pragma
then
2057 end Is_Configuration_Pragma
;
2059 --------------------------
2060 -- Is_In_Context_Clause --
2061 --------------------------
2063 function Is_In_Context_Clause
return Boolean is
2065 Parent_Node
: Node_Id
;
2068 if not Is_List_Member
(N
) then
2072 Plist
:= List_Containing
(N
);
2073 Parent_Node
:= Parent
(Plist
);
2075 if Parent_Node
= Empty
2076 or else Nkind
(Parent_Node
) /= N_Compilation_Unit
2077 or else Context_Items
(Parent_Node
) /= Plist
2084 end Is_In_Context_Clause
;
2086 ---------------------------------
2087 -- Is_Static_String_Expression --
2088 ---------------------------------
2090 function Is_Static_String_Expression
(Arg
: Node_Id
) return Boolean is
2091 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
2094 Analyze_And_Resolve
(Argx
);
2095 return Is_OK_Static_Expression
(Argx
)
2096 and then Nkind
(Argx
) = N_String_Literal
;
2097 end Is_Static_String_Expression
;
2099 ----------------------
2100 -- Pragma_Misplaced --
2101 ----------------------
2103 procedure Pragma_Misplaced
is
2105 Error_Pragma
("incorrect placement of pragma%");
2106 end Pragma_Misplaced
;
2108 ------------------------------------
2109 -- Process Atomic_Shared_Volatile --
2110 ------------------------------------
2112 procedure Process_Atomic_Shared_Volatile
is
2119 procedure Set_Atomic
(E
: Entity_Id
);
2120 -- Set given type as atomic, and if no explicit alignment was given,
2121 -- set alignment to unknown, since back end knows what the alignment
2122 -- requirements are for atomic arrays. Note: this step is necessary
2123 -- for derived types.
2129 procedure Set_Atomic
(E
: Entity_Id
) is
2133 if not Has_Alignment_Clause
(E
) then
2134 Set_Alignment
(E
, Uint_0
);
2138 -- Start of processing for Process_Atomic_Shared_Volatile
2141 Check_Ada_83_Warning
;
2142 Check_No_Identifiers
;
2143 Check_Arg_Count
(1);
2144 Check_Arg_Is_Local_Name
(Arg1
);
2145 E_Id
:= Expression
(Arg1
);
2147 if Etype
(E_Id
) = Any_Type
then
2152 D
:= Declaration_Node
(E
);
2156 if Rep_Item_Too_Early
(E
, N
)
2158 Rep_Item_Too_Late
(E
, N
)
2162 Check_First_Subtype
(Arg1
);
2165 if Prag_Id
/= Pragma_Volatile
then
2167 Set_Atomic
(Underlying_Type
(E
));
2168 Set_Atomic
(Base_Type
(E
));
2171 -- Attribute belongs on the base type. If the view of the type is
2172 -- currently private, it also belongs on the underlying type.
2174 Set_Is_Volatile
(Base_Type
(E
));
2175 Set_Is_Volatile
(Underlying_Type
(E
));
2177 Set_Treat_As_Volatile
(E
);
2178 Set_Treat_As_Volatile
(Underlying_Type
(E
));
2180 elsif K
= N_Object_Declaration
2181 or else (K
= N_Component_Declaration
2182 and then Original_Record_Component
(E
) = E
)
2184 if Rep_Item_Too_Late
(E
, N
) then
2188 if Prag_Id
/= Pragma_Volatile
then
2191 -- If the object declaration has an explicit initialization, a
2192 -- temporary may have to be created to hold the expression, to
2193 -- ensure that access to the object remain atomic.
2195 if Nkind
(Parent
(E
)) = N_Object_Declaration
2196 and then Present
(Expression
(Parent
(E
)))
2198 Set_Has_Delayed_Freeze
(E
);
2201 -- An interesting improvement here. If an object of type X is
2202 -- declared atomic, and the type X is not atomic, that's a
2203 -- pity, since it may not have appropriate alignment etc. We
2204 -- can rescue this in the special case where the object and
2205 -- type are in the same unit by just setting the type as
2206 -- atomic, so that the back end will process it as atomic.
2208 Utyp
:= Underlying_Type
(Etype
(E
));
2211 and then Sloc
(E
) > No_Location
2212 and then Sloc
(Utyp
) > No_Location
2214 Get_Source_File_Index
(Sloc
(E
)) =
2215 Get_Source_File_Index
(Sloc
(Underlying_Type
(Etype
(E
))))
2217 Set_Is_Atomic
(Underlying_Type
(Etype
(E
)));
2221 Set_Is_Volatile
(E
);
2222 Set_Treat_As_Volatile
(E
);
2226 ("inappropriate entity for pragma%", Arg1
);
2228 end Process_Atomic_Shared_Volatile
;
2230 -------------------------------------------
2231 -- Process_Compile_Time_Warning_Or_Error --
2232 -------------------------------------------
2234 procedure Process_Compile_Time_Warning_Or_Error
is
2235 Arg1x
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
2238 Check_Arg_Count
(2);
2239 Check_No_Identifiers
;
2240 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
2241 Analyze_And_Resolve
(Arg1x
, Standard_Boolean
);
2243 if Compile_Time_Known_Value
(Arg1x
) then
2244 if Is_True
(Expr_Value
(Get_Pragma_Arg
(Arg1
))) then
2246 Str
: constant String_Id
:=
2247 Strval
(Get_Pragma_Arg
(Arg2
));
2248 Len
: constant Int
:= String_Length
(Str
);
2253 Cent
: constant Entity_Id
:=
2254 Cunit_Entity
(Current_Sem_Unit
);
2256 Force
: constant Boolean :=
2257 Prag_Id
= Pragma_Compile_Time_Warning
2259 Is_Spec_Name
(Unit_Name
(Current_Sem_Unit
))
2260 and then (Ekind
(Cent
) /= E_Package
2261 or else not In_Private_Part
(Cent
));
2262 -- Set True if this is the warning case, and we are in the
2263 -- visible part of a package spec, or in a subprogram spec,
2264 -- in which case we want to force the client to see the
2265 -- warning, even though it is not in the main unit.
2268 -- Loop through segments of message separated by line feeds.
2269 -- We output these segments as separate messages with
2270 -- continuation marks for all but the first.
2275 Error_Msg_Strlen
:= 0;
2277 -- Loop to copy characters from argument to error message
2281 exit when Ptr
> Len
;
2282 CC
:= Get_String_Char
(Str
, Ptr
);
2285 -- Ignore wide chars ??? else store character
2287 if In_Character_Range
(CC
) then
2288 C
:= Get_Character
(CC
);
2289 exit when C
= ASCII
.LF
;
2290 Error_Msg_Strlen
:= Error_Msg_Strlen
+ 1;
2291 Error_Msg_String
(Error_Msg_Strlen
) := C
;
2295 -- Here with one line ready to go
2297 Error_Msg_Warn
:= Prag_Id
= Pragma_Compile_Time_Warning
;
2299 -- If this is a warning in a spec, then we want clients
2300 -- to see the warning, so mark the message with the
2301 -- special sequence !! to force the warning. In the case
2302 -- of a package spec, we do not force this if we are in
2303 -- the private part of the spec.
2306 if Cont
= False then
2307 Error_Msg_N
("<~!!", Arg1
);
2310 Error_Msg_N
("\<~!!", Arg1
);
2313 -- Error, rather than warning, or in a body, so we do not
2314 -- need to force visibility for client (error will be
2315 -- output in any case, and this is the situation in which
2316 -- we do not want a client to get a warning, since the
2317 -- warning is in the body or the spec private part.
2320 if Cont
= False then
2321 Error_Msg_N
("<~", Arg1
);
2324 Error_Msg_N
("\<~", Arg1
);
2328 exit when Ptr
> Len
;
2333 end Process_Compile_Time_Warning_Or_Error
;
2335 ------------------------
2336 -- Process_Convention --
2337 ------------------------
2339 procedure Process_Convention
2340 (C
: out Convention_Id
;
2341 Ent
: out Entity_Id
)
2347 Comp_Unit
: Unit_Number_Type
;
2349 procedure Diagnose_Multiple_Pragmas
(S
: Entity_Id
);
2350 -- Called if we have more than one Export/Import/Convention pragma.
2351 -- This is generally illegal, but we have a special case of allowing
2352 -- Import and Interface to coexist if they specify the convention in
2353 -- a consistent manner. We are allowed to do this, since Interface is
2354 -- an implementation defined pragma, and we choose to do it since we
2355 -- know Rational allows this combination. S is the entity id of the
2356 -- subprogram in question. This procedure also sets the special flag
2357 -- Import_Interface_Present in both pragmas in the case where we do
2358 -- have matching Import and Interface pragmas.
2360 procedure Set_Convention_From_Pragma
(E
: Entity_Id
);
2361 -- Set convention in entity E, and also flag that the entity has a
2362 -- convention pragma. If entity is for a private or incomplete type,
2363 -- also set convention and flag on underlying type. This procedure
2364 -- also deals with the special case of C_Pass_By_Copy convention.
2366 -------------------------------
2367 -- Diagnose_Multiple_Pragmas --
2368 -------------------------------
2370 procedure Diagnose_Multiple_Pragmas
(S
: Entity_Id
) is
2371 Pdec
: constant Node_Id
:= Declaration_Node
(S
);
2375 function Same_Convention
(Decl
: Node_Id
) return Boolean;
2376 -- Decl is a pragma node. This function returns True if this
2377 -- pragma has a first argument that is an identifier with a
2378 -- Chars field corresponding to the Convention_Id C.
2380 function Same_Name
(Decl
: Node_Id
) return Boolean;
2381 -- Decl is a pragma node. This function returns True if this
2382 -- pragma has a second argument that is an identifier with a
2383 -- Chars field that matches the Chars of the current subprogram.
2385 ---------------------
2386 -- Same_Convention --
2387 ---------------------
2389 function Same_Convention
(Decl
: Node_Id
) return Boolean is
2390 Arg1
: constant Node_Id
:=
2391 First
(Pragma_Argument_Associations
(Decl
));
2394 if Present
(Arg1
) then
2396 Arg
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
2398 if Nkind
(Arg
) = N_Identifier
2399 and then Is_Convention_Name
(Chars
(Arg
))
2400 and then Get_Convention_Id
(Chars
(Arg
)) = C
2408 end Same_Convention
;
2414 function Same_Name
(Decl
: Node_Id
) return Boolean is
2415 Arg1
: constant Node_Id
:=
2416 First
(Pragma_Argument_Associations
(Decl
));
2424 Arg2
:= Next
(Arg1
);
2431 Arg
: constant Node_Id
:= Get_Pragma_Arg
(Arg2
);
2433 if Nkind
(Arg
) = N_Identifier
2434 and then Chars
(Arg
) = Chars
(S
)
2443 -- Start of processing for Diagnose_Multiple_Pragmas
2448 -- Definitely give message if we have Convention/Export here
2450 if Prag_Id
= Pragma_Convention
or else Prag_Id
= Pragma_Export
then
2453 -- If we have an Import or Export, scan back from pragma to
2454 -- find any previous pragma applying to the same procedure.
2455 -- The scan will be terminated by the start of the list, or
2456 -- hitting the subprogram declaration. This won't allow one
2457 -- pragma to appear in the public part and one in the private
2458 -- part, but that seems very unlikely in practice.
2462 while Present
(Decl
) and then Decl
/= Pdec
loop
2464 -- Look for pragma with same name as us
2466 if Nkind
(Decl
) = N_Pragma
2467 and then Same_Name
(Decl
)
2469 -- Give error if same as our pragma or Export/Convention
2471 if Pragma_Name
(Decl
) = Name_Export
2473 Pragma_Name
(Decl
) = Name_Convention
2475 Pragma_Name
(Decl
) = Pragma_Name
(N
)
2479 -- Case of Import/Interface or the other way round
2481 elsif Pragma_Name
(Decl
) = Name_Interface
2483 Pragma_Name
(Decl
) = Name_Import
2485 -- Here we know that we have Import and Interface. It
2486 -- doesn't matter which way round they are. See if
2487 -- they specify the same convention. If so, all OK,
2488 -- and set special flags to stop other messages
2490 if Same_Convention
(Decl
) then
2491 Set_Import_Interface_Present
(N
);
2492 Set_Import_Interface_Present
(Decl
);
2495 -- If different conventions, special message
2498 Error_Msg_Sloc
:= Sloc
(Decl
);
2500 ("convention differs from that given#", Arg1
);
2510 -- Give message if needed if we fall through those tests
2514 ("at most one Convention/Export/Import pragma is allowed",
2517 end Diagnose_Multiple_Pragmas
;
2519 --------------------------------
2520 -- Set_Convention_From_Pragma --
2521 --------------------------------
2523 procedure Set_Convention_From_Pragma
(E
: Entity_Id
) is
2525 -- Ada 2005 (AI-430): Check invalid attempt to change convention
2526 -- for an overridden dispatching operation. Technically this is
2527 -- an amendment and should only be done in Ada 2005 mode. However,
2528 -- this is clearly a mistake, since the problem that is addressed
2529 -- by this AI is that there is a clear gap in the RM!
2531 if Is_Dispatching_Operation
(E
)
2532 and then Present
(Overridden_Operation
(E
))
2533 and then C
/= Convention
(Overridden_Operation
(E
))
2536 ("cannot change convention for " &
2537 "overridden dispatching operation",
2541 -- Set the convention
2543 Set_Convention
(E
, C
);
2544 Set_Has_Convention_Pragma
(E
);
2546 if Is_Incomplete_Or_Private_Type
(E
) then
2547 Set_Convention
(Underlying_Type
(E
), C
);
2548 Set_Has_Convention_Pragma
(Underlying_Type
(E
), True);
2551 -- A class-wide type should inherit the convention of the specific
2552 -- root type (although this isn't specified clearly by the RM).
2554 if Is_Type
(E
) and then Present
(Class_Wide_Type
(E
)) then
2555 Set_Convention
(Class_Wide_Type
(E
), C
);
2558 -- If the entity is a record type, then check for special case of
2559 -- C_Pass_By_Copy, which is treated the same as C except that the
2560 -- special record flag is set. This convention is only permitted
2561 -- on record types (see AI95-00131).
2563 if Cname
= Name_C_Pass_By_Copy
then
2564 if Is_Record_Type
(E
) then
2565 Set_C_Pass_By_Copy
(Base_Type
(E
));
2566 elsif Is_Incomplete_Or_Private_Type
(E
)
2567 and then Is_Record_Type
(Underlying_Type
(E
))
2569 Set_C_Pass_By_Copy
(Base_Type
(Underlying_Type
(E
)));
2572 ("C_Pass_By_Copy convention allowed only for record type",
2577 -- If the entity is a derived boolean type, check for the special
2578 -- case of convention C, C++, or Fortran, where we consider any
2579 -- nonzero value to represent true.
2581 if Is_Discrete_Type
(E
)
2582 and then Root_Type
(Etype
(E
)) = Standard_Boolean
2588 C
= Convention_Fortran
)
2590 Set_Nonzero_Is_True
(Base_Type
(E
));
2592 end Set_Convention_From_Pragma
;
2594 -- Start of processing for Process_Convention
2597 Check_At_Least_N_Arguments
(2);
2598 Check_Optional_Identifier
(Arg1
, Name_Convention
);
2599 Check_Arg_Is_Identifier
(Arg1
);
2600 Cname
:= Chars
(Expression
(Arg1
));
2602 -- C_Pass_By_Copy is treated as a synonym for convention C (this is
2603 -- tested again below to set the critical flag).
2604 if Cname
= Name_C_Pass_By_Copy
then
2607 -- Otherwise we must have something in the standard convention list
2609 elsif Is_Convention_Name
(Cname
) then
2610 C
:= Get_Convention_Id
(Chars
(Expression
(Arg1
)));
2612 -- In DEC VMS, it seems that there is an undocumented feature that
2613 -- any unrecognized convention is treated as the default, which for
2614 -- us is convention C. It does not seem so terrible to do this
2615 -- unconditionally, silently in the VMS case, and with a warning
2616 -- in the non-VMS case.
2619 if Warn_On_Export_Import
and not OpenVMS_On_Target
then
2621 ("?unrecognized convention name, C assumed",
2628 Check_Optional_Identifier
(Arg2
, Name_Entity
);
2629 Check_Arg_Is_Local_Name
(Arg2
);
2631 Id
:= Expression
(Arg2
);
2634 if not Is_Entity_Name
(Id
) then
2635 Error_Pragma_Arg
("entity name required", Arg2
);
2640 -- Set entity to return
2644 -- Go to renamed subprogram if present, since convention applies to
2645 -- the actual renamed entity, not to the renaming entity. If the
2646 -- subprogram is inherited, go to parent subprogram.
2648 if Is_Subprogram
(E
)
2649 and then Present
(Alias
(E
))
2651 if Nkind
(Parent
(Declaration_Node
(E
))) =
2652 N_Subprogram_Renaming_Declaration
2654 if Scope
(E
) /= Scope
(Alias
(E
)) then
2656 ("cannot apply pragma% to non-local entity&#", E
);
2661 elsif Nkind_In
(Parent
(E
), N_Full_Type_Declaration
,
2662 N_Private_Extension_Declaration
)
2663 and then Scope
(E
) = Scope
(Alias
(E
))
2667 -- Return the parent subprogram the entity was inherited from
2673 -- Check that we are not applying this to a specless body
2675 if Is_Subprogram
(E
)
2676 and then Nkind
(Parent
(Declaration_Node
(E
))) = N_Subprogram_Body
2679 ("pragma% requires separate spec and must come before body");
2682 -- Check that we are not applying this to a named constant
2684 if Ekind_In
(E
, E_Named_Integer
, E_Named_Real
) then
2685 Error_Msg_Name_1
:= Pname
;
2687 ("cannot apply pragma% to named constant!",
2688 Get_Pragma_Arg
(Arg2
));
2690 ("\supply appropriate type for&!", Arg2
);
2693 if Ekind
(E
) = E_Enumeration_Literal
then
2694 Error_Pragma
("enumeration literal not allowed for pragma%");
2697 -- Check for rep item appearing too early or too late
2699 if Etype
(E
) = Any_Type
2700 or else Rep_Item_Too_Early
(E
, N
)
2704 E
:= Underlying_Type
(E
);
2707 if Rep_Item_Too_Late
(E
, N
) then
2711 if Has_Convention_Pragma
(E
) then
2712 Diagnose_Multiple_Pragmas
(E
);
2714 elsif Convention
(E
) = Convention_Protected
2715 or else Ekind
(Scope
(E
)) = E_Protected_Type
2718 ("a protected operation cannot be given a different convention",
2722 -- For Intrinsic, a subprogram is required
2724 if C
= Convention_Intrinsic
2725 and then not Is_Subprogram
(E
)
2726 and then not Is_Generic_Subprogram
(E
)
2729 ("second argument of pragma% must be a subprogram", Arg2
);
2732 -- For Stdcall, a subprogram, variable or subprogram type is required
2734 if C
= Convention_Stdcall
2735 and then not Is_Subprogram
(E
)
2736 and then not Is_Generic_Subprogram
(E
)
2737 and then Ekind
(E
) /= E_Variable
2740 and then Ekind
(Designated_Type
(E
)) = E_Subprogram_Type
)
2743 ("second argument of pragma% must be subprogram (type)",
2747 if not Is_Subprogram
(E
)
2748 and then not Is_Generic_Subprogram
(E
)
2750 Set_Convention_From_Pragma
(E
);
2753 Check_First_Subtype
(Arg2
);
2754 Set_Convention_From_Pragma
(Base_Type
(E
));
2756 -- For subprograms, we must set the convention on the
2757 -- internally generated directly designated type as well.
2759 if Ekind
(E
) = E_Access_Subprogram_Type
then
2760 Set_Convention_From_Pragma
(Directly_Designated_Type
(E
));
2764 -- For the subprogram case, set proper convention for all homonyms
2765 -- in same scope and the same declarative part, i.e. the same
2766 -- compilation unit.
2769 Comp_Unit
:= Get_Source_Unit
(E
);
2770 Set_Convention_From_Pragma
(E
);
2772 -- Treat a pragma Import as an implicit body, for GPS use
2774 if Prag_Id
= Pragma_Import
then
2775 Generate_Reference
(E
, Id
, 'b');
2778 -- Loop through the homonyms of the pragma argument's entity
2783 exit when No
(E1
) or else Scope
(E1
) /= Current_Scope
;
2785 -- Do not set the pragma on inherited operations or on formal
2788 if Comes_From_Source
(E1
)
2789 and then Comp_Unit
= Get_Source_Unit
(E1
)
2790 and then not Is_Formal_Subprogram
(E1
)
2791 and then Nkind
(Original_Node
(Parent
(E1
))) /=
2792 N_Full_Type_Declaration
2794 if Present
(Alias
(E1
))
2795 and then Scope
(E1
) /= Scope
(Alias
(E1
))
2798 ("cannot apply pragma% to non-local entity& declared#",
2802 Set_Convention_From_Pragma
(E1
);
2804 if Prag_Id
= Pragma_Import
then
2805 Generate_Reference
(E1
, Id
, 'b');
2810 end Process_Convention
;
2812 -----------------------------------------------------
2813 -- Process_Extended_Import_Export_Exception_Pragma --
2814 -----------------------------------------------------
2816 procedure Process_Extended_Import_Export_Exception_Pragma
2817 (Arg_Internal
: Node_Id
;
2818 Arg_External
: Node_Id
;
2826 if not OpenVMS_On_Target
then
2828 ("?pragma% ignored (applies only to Open'V'M'S)");
2831 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2832 Def_Id
:= Entity
(Arg_Internal
);
2834 if Ekind
(Def_Id
) /= E_Exception
then
2836 ("pragma% must refer to declared exception", Arg_Internal
);
2839 Set_Extended_Import_Export_External_Name
(Def_Id
, Arg_External
);
2841 if Present
(Arg_Form
) then
2842 Check_Arg_Is_One_Of
(Arg_Form
, Name_Ada
, Name_VMS
);
2845 if Present
(Arg_Form
)
2846 and then Chars
(Arg_Form
) = Name_Ada
2850 Set_Is_VMS_Exception
(Def_Id
);
2851 Set_Exception_Code
(Def_Id
, No_Uint
);
2854 if Present
(Arg_Code
) then
2855 if not Is_VMS_Exception
(Def_Id
) then
2857 ("Code option for pragma% not allowed for Ada case",
2861 Check_Arg_Is_Static_Expression
(Arg_Code
, Any_Integer
);
2862 Code_Val
:= Expr_Value
(Arg_Code
);
2864 if not UI_Is_In_Int_Range
(Code_Val
) then
2866 ("Code option for pragma% must be in 32-bit range",
2870 Set_Exception_Code
(Def_Id
, Code_Val
);
2873 end Process_Extended_Import_Export_Exception_Pragma
;
2875 -------------------------------------------------
2876 -- Process_Extended_Import_Export_Internal_Arg --
2877 -------------------------------------------------
2879 procedure Process_Extended_Import_Export_Internal_Arg
2880 (Arg_Internal
: Node_Id
:= Empty
)
2883 if No
(Arg_Internal
) then
2884 Error_Pragma
("Internal parameter required for pragma%");
2887 if Nkind
(Arg_Internal
) = N_Identifier
then
2890 elsif Nkind
(Arg_Internal
) = N_Operator_Symbol
2891 and then (Prag_Id
= Pragma_Import_Function
2893 Prag_Id
= Pragma_Export_Function
)
2899 ("wrong form for Internal parameter for pragma%", Arg_Internal
);
2902 Check_Arg_Is_Local_Name
(Arg_Internal
);
2903 end Process_Extended_Import_Export_Internal_Arg
;
2905 --------------------------------------------------
2906 -- Process_Extended_Import_Export_Object_Pragma --
2907 --------------------------------------------------
2909 procedure Process_Extended_Import_Export_Object_Pragma
2910 (Arg_Internal
: Node_Id
;
2911 Arg_External
: Node_Id
;
2917 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2918 Def_Id
:= Entity
(Arg_Internal
);
2920 if not Ekind_In
(Def_Id
, E_Constant
, E_Variable
) then
2922 ("pragma% must designate an object", Arg_Internal
);
2925 if Has_Rep_Pragma
(Def_Id
, Name_Common_Object
)
2927 Has_Rep_Pragma
(Def_Id
, Name_Psect_Object
)
2930 ("previous Common/Psect_Object applies, pragma % not permitted",
2934 if Rep_Item_Too_Late
(Def_Id
, N
) then
2938 Set_Extended_Import_Export_External_Name
(Def_Id
, Arg_External
);
2940 if Present
(Arg_Size
) then
2941 Check_Arg_Is_External_Name
(Arg_Size
);
2944 -- Export_Object case
2946 if Prag_Id
= Pragma_Export_Object
then
2947 if not Is_Library_Level_Entity
(Def_Id
) then
2949 ("argument for pragma% must be library level entity",
2953 if Ekind
(Current_Scope
) = E_Generic_Package
then
2954 Error_Pragma
("pragma& cannot appear in a generic unit");
2957 if not Size_Known_At_Compile_Time
(Etype
(Def_Id
)) then
2959 ("exported object must have compile time known size",
2963 if Warn_On_Export_Import
and then Is_Exported
(Def_Id
) then
2964 Error_Msg_N
("?duplicate Export_Object pragma", N
);
2966 Set_Exported
(Def_Id
, Arg_Internal
);
2969 -- Import_Object case
2972 if Is_Concurrent_Type
(Etype
(Def_Id
)) then
2974 ("cannot use pragma% for task/protected object",
2978 if Ekind
(Def_Id
) = E_Constant
then
2980 ("cannot import a constant", Arg_Internal
);
2983 if Warn_On_Export_Import
2984 and then Has_Discriminants
(Etype
(Def_Id
))
2987 ("imported value must be initialized?", Arg_Internal
);
2990 if Warn_On_Export_Import
2991 and then Is_Access_Type
(Etype
(Def_Id
))
2994 ("cannot import object of an access type?", Arg_Internal
);
2997 if Warn_On_Export_Import
2998 and then Is_Imported
(Def_Id
)
3001 ("?duplicate Import_Object pragma", N
);
3003 -- Check for explicit initialization present. Note that an
3004 -- initialization generated by the code generator, e.g. for an
3005 -- access type, does not count here.
3007 elsif Present
(Expression
(Parent
(Def_Id
)))
3010 (Original_Node
(Expression
(Parent
(Def_Id
))))
3012 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3014 ("imported entities cannot be initialized (RM B.1(24))",
3015 "\no initialization allowed for & declared#", Arg1
);
3017 Set_Imported
(Def_Id
);
3018 Note_Possible_Modification
(Arg_Internal
, Sure
=> False);
3021 end Process_Extended_Import_Export_Object_Pragma
;
3023 ------------------------------------------------------
3024 -- Process_Extended_Import_Export_Subprogram_Pragma --
3025 ------------------------------------------------------
3027 procedure Process_Extended_Import_Export_Subprogram_Pragma
3028 (Arg_Internal
: Node_Id
;
3029 Arg_External
: Node_Id
;
3030 Arg_Parameter_Types
: Node_Id
;
3031 Arg_Result_Type
: Node_Id
:= Empty
;
3032 Arg_Mechanism
: Node_Id
;
3033 Arg_Result_Mechanism
: Node_Id
:= Empty
;
3034 Arg_First_Optional_Parameter
: Node_Id
:= Empty
)
3040 Ambiguous
: Boolean;
3044 function Same_Base_Type
3046 Formal
: Entity_Id
) return Boolean;
3047 -- Determines if Ptype references the type of Formal. Note that only
3048 -- the base types need to match according to the spec. Ptype here is
3049 -- the argument from the pragma, which is either a type name, or an
3050 -- access attribute.
3052 --------------------
3053 -- Same_Base_Type --
3054 --------------------
3056 function Same_Base_Type
3058 Formal
: Entity_Id
) return Boolean
3060 Ftyp
: constant Entity_Id
:= Base_Type
(Etype
(Formal
));
3064 -- Case where pragma argument is typ'Access
3066 if Nkind
(Ptype
) = N_Attribute_Reference
3067 and then Attribute_Name
(Ptype
) = Name_Access
3069 Pref
:= Prefix
(Ptype
);
3072 if not Is_Entity_Name
(Pref
)
3073 or else Entity
(Pref
) = Any_Type
3078 -- We have a match if the corresponding argument is of an
3079 -- anonymous access type, and its designated type matches the
3080 -- type of the prefix of the access attribute
3082 return Ekind
(Ftyp
) = E_Anonymous_Access_Type
3083 and then Base_Type
(Entity
(Pref
)) =
3084 Base_Type
(Etype
(Designated_Type
(Ftyp
)));
3086 -- Case where pragma argument is a type name
3091 if not Is_Entity_Name
(Ptype
)
3092 or else Entity
(Ptype
) = Any_Type
3097 -- We have a match if the corresponding argument is of the type
3098 -- given in the pragma (comparing base types)
3100 return Base_Type
(Entity
(Ptype
)) = Ftyp
;
3104 -- Start of processing for
3105 -- Process_Extended_Import_Export_Subprogram_Pragma
3108 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
3112 -- Loop through homonyms (overloadings) of the entity
3114 Hom_Id
:= Entity
(Arg_Internal
);
3115 while Present
(Hom_Id
) loop
3116 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
3118 -- We need a subprogram in the current scope
3120 if not Is_Subprogram
(Def_Id
)
3121 or else Scope
(Def_Id
) /= Current_Scope
3128 -- Pragma cannot apply to subprogram body
3130 if Is_Subprogram
(Def_Id
)
3131 and then Nkind
(Parent
(Declaration_Node
(Def_Id
))) =
3135 ("pragma% requires separate spec"
3136 & " and must come before body");
3139 -- Test result type if given, note that the result type
3140 -- parameter can only be present for the function cases.
3142 if Present
(Arg_Result_Type
)
3143 and then not Same_Base_Type
(Arg_Result_Type
, Def_Id
)
3147 elsif Etype
(Def_Id
) /= Standard_Void_Type
3149 (Pname
= Name_Export_Procedure
3151 Pname
= Name_Import_Procedure
)
3155 -- Test parameter types if given. Note that this parameter
3156 -- has not been analyzed (and must not be, since it is
3157 -- semantic nonsense), so we get it as the parser left it.
3159 elsif Present
(Arg_Parameter_Types
) then
3160 Check_Matching_Types
: declare
3165 Formal
:= First_Formal
(Def_Id
);
3167 if Nkind
(Arg_Parameter_Types
) = N_Null
then
3168 if Present
(Formal
) then
3172 -- A list of one type, e.g. (List) is parsed as
3173 -- a parenthesized expression.
3175 elsif Nkind
(Arg_Parameter_Types
) /= N_Aggregate
3176 and then Paren_Count
(Arg_Parameter_Types
) = 1
3179 or else Present
(Next_Formal
(Formal
))
3184 Same_Base_Type
(Arg_Parameter_Types
, Formal
);
3187 -- A list of more than one type is parsed as a aggregate
3189 elsif Nkind
(Arg_Parameter_Types
) = N_Aggregate
3190 and then Paren_Count
(Arg_Parameter_Types
) = 0
3192 Ptype
:= First
(Expressions
(Arg_Parameter_Types
));
3193 while Present
(Ptype
) or else Present
(Formal
) loop
3196 or else not Same_Base_Type
(Ptype
, Formal
)
3201 Next_Formal
(Formal
);
3206 -- Anything else is of the wrong form
3210 ("wrong form for Parameter_Types parameter",
3211 Arg_Parameter_Types
);
3213 end Check_Matching_Types
;
3216 -- Match is now False if the entry we found did not match
3217 -- either a supplied Parameter_Types or Result_Types argument
3223 -- Ambiguous case, the flag Ambiguous shows if we already
3224 -- detected this and output the initial messages.
3227 if not Ambiguous
then
3229 Error_Msg_Name_1
:= Pname
;
3231 ("pragma% does not uniquely identify subprogram!",
3233 Error_Msg_Sloc
:= Sloc
(Ent
);
3234 Error_Msg_N
("matching subprogram #!", N
);
3238 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3239 Error_Msg_N
("matching subprogram #!", N
);
3244 Hom_Id
:= Homonym
(Hom_Id
);
3247 -- See if we found an entry
3250 if not Ambiguous
then
3251 if Is_Generic_Subprogram
(Entity
(Arg_Internal
)) then
3253 ("pragma% cannot be given for generic subprogram");
3256 ("pragma% does not identify local subprogram");
3263 -- Import pragmas must be for imported entities
3265 if Prag_Id
= Pragma_Import_Function
3267 Prag_Id
= Pragma_Import_Procedure
3269 Prag_Id
= Pragma_Import_Valued_Procedure
3271 if not Is_Imported
(Ent
) then
3273 ("pragma Import or Interface must precede pragma%");
3276 -- Here we have the Export case which can set the entity as exported
3278 -- But does not do so if the specified external name is null, since
3279 -- that is taken as a signal in DEC Ada 83 (with which we want to be
3280 -- compatible) to request no external name.
3282 elsif Nkind
(Arg_External
) = N_String_Literal
3283 and then String_Length
(Strval
(Arg_External
)) = 0
3287 -- In all other cases, set entity as exported
3290 Set_Exported
(Ent
, Arg_Internal
);
3293 -- Special processing for Valued_Procedure cases
3295 if Prag_Id
= Pragma_Import_Valued_Procedure
3297 Prag_Id
= Pragma_Export_Valued_Procedure
3299 Formal
:= First_Formal
(Ent
);
3302 Error_Pragma
("at least one parameter required for pragma%");
3304 elsif Ekind
(Formal
) /= E_Out_Parameter
then
3305 Error_Pragma
("first parameter must have mode out for pragma%");
3308 Set_Is_Valued_Procedure
(Ent
);
3312 Set_Extended_Import_Export_External_Name
(Ent
, Arg_External
);
3314 -- Process Result_Mechanism argument if present. We have already
3315 -- checked that this is only allowed for the function case.
3317 if Present
(Arg_Result_Mechanism
) then
3318 Set_Mechanism_Value
(Ent
, Arg_Result_Mechanism
);
3321 -- Process Mechanism parameter if present. Note that this parameter
3322 -- is not analyzed, and must not be analyzed since it is semantic
3323 -- nonsense, so we get it in exactly as the parser left it.
3325 if Present
(Arg_Mechanism
) then
3333 -- A single mechanism association without a formal parameter
3334 -- name is parsed as a parenthesized expression. All other
3335 -- cases are parsed as aggregates, so we rewrite the single
3336 -- parameter case as an aggregate for consistency.
3338 if Nkind
(Arg_Mechanism
) /= N_Aggregate
3339 and then Paren_Count
(Arg_Mechanism
) = 1
3341 Rewrite
(Arg_Mechanism
,
3342 Make_Aggregate
(Sloc
(Arg_Mechanism
),
3343 Expressions
=> New_List
(
3344 Relocate_Node
(Arg_Mechanism
))));
3347 -- Case of only mechanism name given, applies to all formals
3349 if Nkind
(Arg_Mechanism
) /= N_Aggregate
then
3350 Formal
:= First_Formal
(Ent
);
3351 while Present
(Formal
) loop
3352 Set_Mechanism_Value
(Formal
, Arg_Mechanism
);
3353 Next_Formal
(Formal
);
3356 -- Case of list of mechanism associations given
3359 if Null_Record_Present
(Arg_Mechanism
) then
3361 ("inappropriate form for Mechanism parameter",
3365 -- Deal with positional ones first
3367 Formal
:= First_Formal
(Ent
);
3369 if Present
(Expressions
(Arg_Mechanism
)) then
3370 Mname
:= First
(Expressions
(Arg_Mechanism
));
3371 while Present
(Mname
) loop
3374 ("too many mechanism associations", Mname
);
3377 Set_Mechanism_Value
(Formal
, Mname
);
3378 Next_Formal
(Formal
);
3383 -- Deal with named entries
3385 if Present
(Component_Associations
(Arg_Mechanism
)) then
3386 Massoc
:= First
(Component_Associations
(Arg_Mechanism
));
3387 while Present
(Massoc
) loop
3388 Choice
:= First
(Choices
(Massoc
));
3390 if Nkind
(Choice
) /= N_Identifier
3391 or else Present
(Next
(Choice
))
3394 ("incorrect form for mechanism association",
3398 Formal
:= First_Formal
(Ent
);
3402 ("parameter name & not present", Choice
);
3405 if Chars
(Choice
) = Chars
(Formal
) then
3407 (Formal
, Expression
(Massoc
));
3409 -- Set entity on identifier for ASIS
3411 Set_Entity
(Choice
, Formal
);
3416 Next_Formal
(Formal
);
3426 -- Process First_Optional_Parameter argument if present. We have
3427 -- already checked that this is only allowed for the Import case.
3429 if Present
(Arg_First_Optional_Parameter
) then
3430 if Nkind
(Arg_First_Optional_Parameter
) /= N_Identifier
then
3432 ("first optional parameter must be formal parameter name",
3433 Arg_First_Optional_Parameter
);
3436 Formal
:= First_Formal
(Ent
);
3440 ("specified formal parameter& not found",
3441 Arg_First_Optional_Parameter
);
3444 exit when Chars
(Formal
) =
3445 Chars
(Arg_First_Optional_Parameter
);
3447 Next_Formal
(Formal
);
3450 Set_First_Optional_Parameter
(Ent
, Formal
);
3452 -- Check specified and all remaining formals have right form
3454 while Present
(Formal
) loop
3455 if Ekind
(Formal
) /= E_In_Parameter
then
3457 ("optional formal& is not of mode in!",
3458 Arg_First_Optional_Parameter
, Formal
);
3461 Dval
:= Default_Value
(Formal
);
3465 ("optional formal& does not have default value!",
3466 Arg_First_Optional_Parameter
, Formal
);
3468 elsif Compile_Time_Known_Value_Or_Aggr
(Dval
) then
3473 ("default value for optional formal& is non-static!",
3474 Arg_First_Optional_Parameter
, Formal
);
3478 Set_Is_Optional_Parameter
(Formal
);
3479 Next_Formal
(Formal
);
3482 end Process_Extended_Import_Export_Subprogram_Pragma
;
3484 --------------------------
3485 -- Process_Generic_List --
3486 --------------------------
3488 procedure Process_Generic_List
is
3493 Check_No_Identifiers
;
3494 Check_At_Least_N_Arguments
(1);
3497 while Present
(Arg
) loop
3498 Exp
:= Expression
(Arg
);
3501 if not Is_Entity_Name
(Exp
)
3503 (not Is_Generic_Instance
(Entity
(Exp
))
3505 not Is_Generic_Unit
(Entity
(Exp
)))
3508 ("pragma% argument must be name of generic unit/instance",
3514 end Process_Generic_List
;
3516 ---------------------------------
3517 -- Process_Import_Or_Interface --
3518 ---------------------------------
3520 procedure Process_Import_Or_Interface
is
3526 Process_Convention
(C
, Def_Id
);
3527 Kill_Size_Check_Code
(Def_Id
);
3528 Note_Possible_Modification
(Expression
(Arg2
), Sure
=> False);
3530 if Ekind_In
(Def_Id
, E_Variable
, E_Constant
) then
3532 -- We do not permit Import to apply to a renaming declaration
3534 if Present
(Renamed_Object
(Def_Id
)) then
3536 ("pragma% not allowed for object renaming", Arg2
);
3538 -- User initialization is not allowed for imported object, but
3539 -- the object declaration may contain a default initialization,
3540 -- that will be discarded. Note that an explicit initialization
3541 -- only counts if it comes from source, otherwise it is simply
3542 -- the code generator making an implicit initialization explicit.
3544 elsif Present
(Expression
(Parent
(Def_Id
)))
3545 and then Comes_From_Source
(Expression
(Parent
(Def_Id
)))
3547 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3549 ("no initialization allowed for declaration of& #",
3550 "\imported entities cannot be initialized (RM B.1(24))",
3554 Set_Imported
(Def_Id
);
3555 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3557 -- Note that we do not set Is_Public here. That's because we
3558 -- only want to set it if there is no address clause, and we
3559 -- don't know that yet, so we delay that processing till
3562 -- pragma Import completes deferred constants
3564 if Ekind
(Def_Id
) = E_Constant
then
3565 Set_Has_Completion
(Def_Id
);
3568 -- It is not possible to import a constant of an unconstrained
3569 -- array type (e.g. string) because there is no simple way to
3570 -- write a meaningful subtype for it.
3572 if Is_Array_Type
(Etype
(Def_Id
))
3573 and then not Is_Constrained
(Etype
(Def_Id
))
3576 ("imported constant& must have a constrained subtype",
3581 elsif Is_Subprogram
(Def_Id
)
3582 or else Is_Generic_Subprogram
(Def_Id
)
3584 -- If the name is overloaded, pragma applies to all of the
3585 -- denoted entities in the same declarative part.
3588 while Present
(Hom_Id
) loop
3589 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
3591 -- Ignore inherited subprograms because the pragma will
3592 -- apply to the parent operation, which is the one called.
3594 if Is_Overloadable
(Def_Id
)
3595 and then Present
(Alias
(Def_Id
))
3599 -- If it is not a subprogram, it must be in an outer scope and
3600 -- pragma does not apply.
3602 elsif not Is_Subprogram
(Def_Id
)
3603 and then not Is_Generic_Subprogram
(Def_Id
)
3607 -- Verify that the homonym is in the same declarative part (not
3608 -- just the same scope).
3610 elsif Parent
(Unit_Declaration_Node
(Def_Id
)) /= Parent
(N
)
3611 and then Nkind
(Parent
(N
)) /= N_Compilation_Unit_Aux
3616 Set_Imported
(Def_Id
);
3618 -- Reject an Import applied to an abstract subprogram
3620 if Is_Subprogram
(Def_Id
)
3621 and then Is_Abstract_Subprogram
(Def_Id
)
3623 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3625 ("cannot import abstract subprogram& declared#",
3629 -- Special processing for Convention_Intrinsic
3631 if C
= Convention_Intrinsic
then
3633 -- Link_Name argument not allowed for intrinsic
3636 and then Chars
(Arg3
) = Name_Link_Name
3641 if Present
(Arg4
) then
3643 ("Link_Name argument not allowed for " &
3648 Set_Is_Intrinsic_Subprogram
(Def_Id
);
3650 -- If no external name is present, then check that this
3651 -- is a valid intrinsic subprogram. If an external name
3652 -- is present, then this is handled by the back end.
3655 Check_Intrinsic_Subprogram
(Def_Id
, Expression
(Arg2
));
3659 -- All interfaced procedures need an external symbol created
3660 -- for them since they are always referenced from another
3663 Set_Is_Public
(Def_Id
);
3665 -- Verify that the subprogram does not have a completion
3666 -- through a renaming declaration. For other completions the
3667 -- pragma appears as a too late representation.
3670 Decl
: constant Node_Id
:= Unit_Declaration_Node
(Def_Id
);
3674 and then Nkind
(Decl
) = N_Subprogram_Declaration
3675 and then Present
(Corresponding_Body
(Decl
))
3676 and then Nkind
(Unit_Declaration_Node
3677 (Corresponding_Body
(Decl
))) =
3678 N_Subprogram_Renaming_Declaration
3680 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3682 ("cannot import&, renaming already provided for " &
3683 "declaration #", N
, Def_Id
);
3687 Set_Has_Completion
(Def_Id
);
3688 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3691 if Is_Compilation_Unit
(Hom_Id
) then
3693 -- Its possible homonyms are not affected by the pragma.
3694 -- Such homonyms might be present in the context of other
3695 -- units being compiled.
3700 Hom_Id
:= Homonym
(Hom_Id
);
3704 -- When the convention is Java or CIL, we also allow Import to be
3705 -- given for packages, generic packages, exceptions, record
3706 -- components, and access to subprograms.
3708 elsif (C
= Convention_Java
or else C
= Convention_CIL
)
3710 (Is_Package_Or_Generic_Package
(Def_Id
)
3711 or else Ekind
(Def_Id
) = E_Exception
3712 or else Ekind
(Def_Id
) = E_Access_Subprogram_Type
3713 or else Nkind
(Parent
(Def_Id
)) = N_Component_Declaration
)
3715 Set_Imported
(Def_Id
);
3716 Set_Is_Public
(Def_Id
);
3717 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3719 -- Import a CPP class
3721 elsif Is_Record_Type
(Def_Id
)
3722 and then C
= Convention_CPP
3724 -- Types treated as CPP classes are treated as limited, but we
3725 -- don't require them to be declared this way. A warning is
3726 -- issued to encourage the user to declare them as limited.
3727 -- This is not an error, for compatibility reasons, because
3728 -- these types have been supported this way for some time.
3730 if not Is_Limited_Type
(Def_Id
) then
3732 ("imported 'C'P'P type should be " &
3733 "explicitly declared limited?",
3734 Get_Pragma_Arg
(Arg2
));
3736 ("\type will be considered limited",
3737 Get_Pragma_Arg
(Arg2
));
3740 Set_Is_CPP_Class
(Def_Id
);
3741 Set_Is_Limited_Record
(Def_Id
);
3743 -- Imported CPP types must not have discriminants (because C++
3744 -- classes do not have discriminants).
3746 if Has_Discriminants
(Def_Id
) then
3748 ("imported 'C'P'P type cannot have discriminants",
3749 First
(Discriminant_Specifications
3750 (Declaration_Node
(Def_Id
))));
3753 -- Components of imported CPP types must not have default
3754 -- expressions because the constructor (if any) is on the
3758 Tdef
: constant Node_Id
:=
3759 Type_Definition
(Declaration_Node
(Def_Id
));
3764 if Nkind
(Tdef
) = N_Record_Definition
then
3765 Clist
:= Component_List
(Tdef
);
3768 pragma Assert
(Nkind
(Tdef
) = N_Derived_Type_Definition
);
3769 Clist
:= Component_List
(Record_Extension_Part
(Tdef
));
3772 if Present
(Clist
) then
3773 Comp
:= First
(Component_Items
(Clist
));
3774 while Present
(Comp
) loop
3775 if Present
(Expression
(Comp
)) then
3777 ("component of imported 'C'P'P type cannot have" &
3778 " default expression", Expression
(Comp
));
3788 ("second argument of pragma% must be object or subprogram",
3792 -- If this pragma applies to a compilation unit, then the unit, which
3793 -- is a subprogram, does not require (or allow) a body. We also do
3794 -- not need to elaborate imported procedures.
3796 if Nkind
(Parent
(N
)) = N_Compilation_Unit_Aux
then
3798 Cunit
: constant Node_Id
:= Parent
(Parent
(N
));
3800 Set_Body_Required
(Cunit
, False);
3803 end Process_Import_Or_Interface
;
3805 --------------------
3806 -- Process_Inline --
3807 --------------------
3809 procedure Process_Inline
(Active
: Boolean) is
3815 Effective
: Boolean := False;
3817 procedure Make_Inline
(Subp
: Entity_Id
);
3818 -- Subp is the defining unit name of the subprogram declaration. Set
3819 -- the flag, as well as the flag in the corresponding body, if there
3822 procedure Set_Inline_Flags
(Subp
: Entity_Id
);
3823 -- Sets Is_Inlined and Has_Pragma_Inline flags for Subp and also
3824 -- Has_Pragma_Inline_Always for the Inline_Always case.
3826 function Inlining_Not_Possible
(Subp
: Entity_Id
) return Boolean;
3827 -- Returns True if it can be determined at this stage that inlining
3828 -- is not possible, for example if the body is available and contains
3829 -- exception handlers, we prevent inlining, since otherwise we can
3830 -- get undefined symbols at link time. This function also emits a
3831 -- warning if front-end inlining is enabled and the pragma appears
3834 -- ??? is business with link symbols still valid, or does it relate
3835 -- to front end ZCX which is being phased out ???
3837 ---------------------------
3838 -- Inlining_Not_Possible --
3839 ---------------------------
3841 function Inlining_Not_Possible
(Subp
: Entity_Id
) return Boolean is
3842 Decl
: constant Node_Id
:= Unit_Declaration_Node
(Subp
);
3846 if Nkind
(Decl
) = N_Subprogram_Body
then
3847 Stats
:= Handled_Statement_Sequence
(Decl
);
3848 return Present
(Exception_Handlers
(Stats
))
3849 or else Present
(At_End_Proc
(Stats
));
3851 elsif Nkind
(Decl
) = N_Subprogram_Declaration
3852 and then Present
(Corresponding_Body
(Decl
))
3854 if Front_End_Inlining
3855 and then Analyzed
(Corresponding_Body
(Decl
))
3857 Error_Msg_N
("pragma appears too late, ignored?", N
);
3860 -- If the subprogram is a renaming as body, the body is just a
3861 -- call to the renamed subprogram, and inlining is trivially
3865 Nkind
(Unit_Declaration_Node
(Corresponding_Body
(Decl
))) =
3866 N_Subprogram_Renaming_Declaration
3872 Handled_Statement_Sequence
3873 (Unit_Declaration_Node
(Corresponding_Body
(Decl
)));
3876 Present
(Exception_Handlers
(Stats
))
3877 or else Present
(At_End_Proc
(Stats
));
3881 -- If body is not available, assume the best, the check is
3882 -- performed again when compiling enclosing package bodies.
3886 end Inlining_Not_Possible
;
3892 procedure Make_Inline
(Subp
: Entity_Id
) is
3893 Kind
: constant Entity_Kind
:= Ekind
(Subp
);
3894 Inner_Subp
: Entity_Id
:= Subp
;
3897 -- Ignore if bad type, avoid cascaded error
3899 if Etype
(Subp
) = Any_Type
then
3903 -- Ignore if all inlining is suppressed
3905 elsif Suppress_All_Inlining
then
3909 -- If inlining is not possible, for now do not treat as an error
3911 elsif Inlining_Not_Possible
(Subp
) then
3915 -- Here we have a candidate for inlining, but we must exclude
3916 -- derived operations. Otherwise we would end up trying to inline
3917 -- a phantom declaration, and the result would be to drag in a
3918 -- body which has no direct inlining associated with it. That
3919 -- would not only be inefficient but would also result in the
3920 -- backend doing cross-unit inlining in cases where it was
3921 -- definitely inappropriate to do so.
3923 -- However, a simple Comes_From_Source test is insufficient, since
3924 -- we do want to allow inlining of generic instances which also do
3925 -- not come from source. We also need to recognize specs generated
3926 -- by the front-end for bodies that carry the pragma. Finally,
3927 -- predefined operators do not come from source but are not
3928 -- inlineable either.
3930 elsif Is_Generic_Instance
(Subp
)
3931 or else Nkind
(Parent
(Parent
(Subp
))) = N_Subprogram_Declaration
3935 elsif not Comes_From_Source
(Subp
)
3936 and then Scope
(Subp
) /= Standard_Standard
3942 -- The referenced entity must either be the enclosing entity, or
3943 -- an entity declared within the current open scope.
3945 if Present
(Scope
(Subp
))
3946 and then Scope
(Subp
) /= Current_Scope
3947 and then Subp
/= Current_Scope
3950 ("argument of% must be entity in current scope", Assoc
);
3954 -- Processing for procedure, operator or function. If subprogram
3955 -- is aliased (as for an instance) indicate that the renamed
3956 -- entity (if declared in the same unit) is inlined.
3958 if Is_Subprogram
(Subp
) then
3959 Inner_Subp
:= Ultimate_Alias
(Inner_Subp
);
3961 if In_Same_Source_Unit
(Subp
, Inner_Subp
) then
3962 Set_Inline_Flags
(Inner_Subp
);
3964 Decl
:= Parent
(Parent
(Inner_Subp
));
3966 if Nkind
(Decl
) = N_Subprogram_Declaration
3967 and then Present
(Corresponding_Body
(Decl
))
3969 Set_Inline_Flags
(Corresponding_Body
(Decl
));
3971 elsif Is_Generic_Instance
(Subp
) then
3973 -- Indicate that the body needs to be created for
3974 -- inlining subsequent calls. The instantiation node
3975 -- follows the declaration of the wrapper package
3978 if Scope
(Subp
) /= Standard_Standard
3980 Need_Subprogram_Instance_Body
3981 (Next
(Unit_Declaration_Node
(Scope
(Alias
(Subp
)))),
3991 -- For a generic subprogram set flag as well, for use at the point
3992 -- of instantiation, to determine whether the body should be
3995 elsif Is_Generic_Subprogram
(Subp
) then
3996 Set_Inline_Flags
(Subp
);
3999 -- Literals are by definition inlined
4001 elsif Kind
= E_Enumeration_Literal
then
4004 -- Anything else is an error
4008 ("expect subprogram name for pragma%", Assoc
);
4012 ----------------------
4013 -- Set_Inline_Flags --
4014 ----------------------
4016 procedure Set_Inline_Flags
(Subp
: Entity_Id
) is
4019 Set_Is_Inlined
(Subp
, True);
4022 if not Has_Pragma_Inline
(Subp
) then
4023 Set_Has_Pragma_Inline
(Subp
);
4027 if Prag_Id
= Pragma_Inline_Always
then
4028 Set_Has_Pragma_Inline_Always
(Subp
);
4030 end Set_Inline_Flags
;
4032 -- Start of processing for Process_Inline
4035 Check_No_Identifiers
;
4036 Check_At_Least_N_Arguments
(1);
4039 Inline_Processing_Required
:= True;
4043 while Present
(Assoc
) loop
4044 Subp_Id
:= Expression
(Assoc
);
4048 if Is_Entity_Name
(Subp_Id
) then
4049 Subp
:= Entity
(Subp_Id
);
4051 if Subp
= Any_Id
then
4053 -- If previous error, avoid cascaded errors
4061 while Present
(Homonym
(Subp
))
4062 and then Scope
(Homonym
(Subp
)) = Current_Scope
4064 Make_Inline
(Homonym
(Subp
));
4065 Subp
:= Homonym
(Subp
);
4072 ("inappropriate argument for pragma%", Assoc
);
4075 and then Warn_On_Redundant_Constructs
4076 and then not Suppress_All_Inlining
4078 if Inlining_Not_Possible
(Subp
) then
4080 ("pragma Inline for& is ignored?", N
, Entity
(Subp_Id
));
4083 ("pragma Inline for& is redundant?", N
, Entity
(Subp_Id
));
4091 ----------------------------
4092 -- Process_Interface_Name --
4093 ----------------------------
4095 procedure Process_Interface_Name
4096 (Subprogram_Def
: Entity_Id
;
4102 String_Val
: String_Id
;
4104 procedure Check_Form_Of_Interface_Name
4106 Ext_Name_Case
: Boolean);
4107 -- SN is a string literal node for an interface name. This routine
4108 -- performs some minimal checks that the name is reasonable. In
4109 -- particular that no spaces or other obviously incorrect characters
4110 -- appear. This is only a warning, since any characters are allowed.
4111 -- Ext_Name_Case is True for an External_Name, False for a Link_Name.
4113 ----------------------------------
4114 -- Check_Form_Of_Interface_Name --
4115 ----------------------------------
4117 procedure Check_Form_Of_Interface_Name
4119 Ext_Name_Case
: Boolean)
4121 S
: constant String_Id
:= Strval
(Expr_Value_S
(SN
));
4122 SL
: constant Nat
:= String_Length
(S
);
4127 Error_Msg_N
("interface name cannot be null string", SN
);
4130 for J
in 1 .. SL
loop
4131 C
:= Get_String_Char
(S
, J
);
4133 -- Look for dubious character and issue unconditional warning.
4134 -- Definitely dubious if not in character range.
4136 if not In_Character_Range
(C
)
4138 -- For all cases except CLI target,
4139 -- commas, spaces and slashes are dubious (in CLI, we use
4140 -- commas and backslashes in external names to specify
4141 -- assembly version and public key, while slashes and spaces
4142 -- can be used in names to mark nested classes and
4145 or else ((not Ext_Name_Case
or else VM_Target
/= CLI_Target
)
4146 and then (Get_Character
(C
) = ','
4148 Get_Character
(C
) = '\'))
4149 or else (VM_Target
/= CLI_Target
4150 and then (Get_Character
(C
) = ' '
4152 Get_Character
(C
) = '/'))
4155 ("?interface name contains illegal character",
4156 Sloc
(SN
) + Source_Ptr
(J
));
4159 end Check_Form_Of_Interface_Name
;
4161 -- Start of processing for Process_Interface_Name
4164 if No
(Link_Arg
) then
4165 if No
(Ext_Arg
) then
4166 if VM_Target
= CLI_Target
4167 and then Ekind
(Subprogram_Def
) = E_Package
4168 and then Nkind
(Parent
(Subprogram_Def
)) =
4169 N_Package_Specification
4170 and then Present
(Generic_Parent
(Parent
(Subprogram_Def
)))
4175 (Generic_Parent
(Parent
(Subprogram_Def
))));
4180 elsif Chars
(Ext_Arg
) = Name_Link_Name
then
4182 Link_Nam
:= Expression
(Ext_Arg
);
4185 Check_Optional_Identifier
(Ext_Arg
, Name_External_Name
);
4186 Ext_Nam
:= Expression
(Ext_Arg
);
4191 Check_Optional_Identifier
(Ext_Arg
, Name_External_Name
);
4192 Check_Optional_Identifier
(Link_Arg
, Name_Link_Name
);
4193 Ext_Nam
:= Expression
(Ext_Arg
);
4194 Link_Nam
:= Expression
(Link_Arg
);
4197 -- Check expressions for external name and link name are static
4199 if Present
(Ext_Nam
) then
4200 Check_Arg_Is_Static_Expression
(Ext_Nam
, Standard_String
);
4201 Check_Form_Of_Interface_Name
(Ext_Nam
, Ext_Name_Case
=> True);
4203 -- Verify that external name is not the name of a local entity,
4204 -- which would hide the imported one and could lead to run-time
4205 -- surprises. The problem can only arise for entities declared in
4206 -- a package body (otherwise the external name is fully qualified
4207 -- and will not conflict).
4215 if Prag_Id
= Pragma_Import
then
4216 String_To_Name_Buffer
(Strval
(Expr_Value_S
(Ext_Nam
)));
4218 E
:= Entity_Id
(Get_Name_Table_Info
(Nam
));
4220 if Nam
/= Chars
(Subprogram_Def
)
4221 and then Present
(E
)
4222 and then not Is_Overloadable
(E
)
4223 and then Is_Immediately_Visible
(E
)
4224 and then not Is_Imported
(E
)
4225 and then Ekind
(Scope
(E
)) = E_Package
4228 while Present
(Par
) loop
4229 if Nkind
(Par
) = N_Package_Body
then
4230 Error_Msg_Sloc
:= Sloc
(E
);
4232 ("imported entity is hidden by & declared#",
4237 Par
:= Parent
(Par
);
4244 if Present
(Link_Nam
) then
4245 Check_Arg_Is_Static_Expression
(Link_Nam
, Standard_String
);
4246 Check_Form_Of_Interface_Name
(Link_Nam
, Ext_Name_Case
=> False);
4249 -- If there is no link name, just set the external name
4251 if No
(Link_Nam
) then
4252 Link_Nam
:= Adjust_External_Name_Case
(Expr_Value_S
(Ext_Nam
));
4254 -- For the Link_Name case, the given literal is preceded by an
4255 -- asterisk, which indicates to GCC that the given name should be
4256 -- taken literally, and in particular that no prepending of
4257 -- underlines should occur, even in systems where this is the
4263 if VM_Target
= No_VM
then
4264 Store_String_Char
(Get_Char_Code
('*'));
4267 String_Val
:= Strval
(Expr_Value_S
(Link_Nam
));
4268 Store_String_Chars
(String_Val
);
4270 Make_String_Literal
(Sloc
(Link_Nam
),
4271 Strval
=> End_String
);
4274 Set_Encoded_Interface_Name
4275 (Get_Base_Subprogram
(Subprogram_Def
), Link_Nam
);
4277 -- We allow duplicated export names in CIL, as they are always
4278 -- enclosed in a namespace that differentiates them, and overloaded
4279 -- entities are supported by the VM.
4281 if Convention
(Subprogram_Def
) /= Convention_CIL
then
4282 Check_Duplicated_Export_Name
(Link_Nam
);
4284 end Process_Interface_Name
;
4286 -----------------------------------------
4287 -- Process_Interrupt_Or_Attach_Handler --
4288 -----------------------------------------
4290 procedure Process_Interrupt_Or_Attach_Handler
is
4291 Arg1_X
: constant Node_Id
:= Expression
(Arg1
);
4292 Handler_Proc
: constant Entity_Id
:= Entity
(Arg1_X
);
4293 Proc_Scope
: constant Entity_Id
:= Scope
(Handler_Proc
);
4296 Set_Is_Interrupt_Handler
(Handler_Proc
);
4298 -- If the pragma is not associated with a handler procedure within a
4299 -- protected type, then it must be for a nonprotected procedure for
4300 -- the AAMP target, in which case we don't associate a representation
4301 -- item with the procedure's scope.
4303 if Ekind
(Proc_Scope
) = E_Protected_Type
then
4304 if Prag_Id
= Pragma_Interrupt_Handler
4306 Prag_Id
= Pragma_Attach_Handler
4308 Record_Rep_Item
(Proc_Scope
, N
);
4311 end Process_Interrupt_Or_Attach_Handler
;
4313 --------------------------------------------------
4314 -- Process_Restrictions_Or_Restriction_Warnings --
4315 --------------------------------------------------
4317 -- Note: some of the simple identifier cases were handled in par-prag,
4318 -- but it is harmless (and more straightforward) to simply handle all
4319 -- cases here, even if it means we repeat a bit of work in some cases.
4321 procedure Process_Restrictions_Or_Restriction_Warnings
4325 R_Id
: Restriction_Id
;
4330 procedure Check_Unit_Name
(N
: Node_Id
);
4331 -- Checks unit name parameter for No_Dependence. Returns if it has
4332 -- an appropriate form, otherwise raises pragma argument error.
4334 ---------------------
4335 -- Check_Unit_Name --
4336 ---------------------
4338 procedure Check_Unit_Name
(N
: Node_Id
) is
4340 if Nkind
(N
) = N_Selected_Component
then
4341 Check_Unit_Name
(Prefix
(N
));
4342 Check_Unit_Name
(Selector_Name
(N
));
4344 elsif Nkind
(N
) = N_Identifier
then
4349 ("wrong form for unit name for No_Dependence", N
);
4351 end Check_Unit_Name
;
4353 -- Start of processing for Process_Restrictions_Or_Restriction_Warnings
4356 Check_Ada_83_Warning
;
4357 Check_At_Least_N_Arguments
(1);
4358 Check_Valid_Configuration_Pragma
;
4361 while Present
(Arg
) loop
4363 Expr
:= Expression
(Arg
);
4365 -- Case of no restriction identifier present
4367 if Id
= No_Name
then
4368 if Nkind
(Expr
) /= N_Identifier
then
4370 ("invalid form for restriction", Arg
);
4375 (Process_Restriction_Synonyms
(Expr
));
4377 if R_Id
not in All_Boolean_Restrictions
then
4378 Error_Msg_Name_1
:= Pname
;
4380 ("invalid restriction identifier&", Get_Pragma_Arg
(Arg
));
4382 -- Check for possible misspelling
4384 for J
in Restriction_Id
loop
4386 Rnm
: constant String := Restriction_Id
'Image (J
);
4389 Name_Buffer
(1 .. Rnm
'Length) := Rnm
;
4390 Name_Len
:= Rnm
'Length;
4391 Set_Casing
(All_Lower_Case
);
4393 if Is_Bad_Spelling_Of
(Chars
(Expr
), Name_Enter
) then
4395 (Identifier_Casing
(Current_Source_File
));
4396 Error_Msg_String
(1 .. Rnm
'Length) :=
4397 Name_Buffer
(1 .. Name_Len
);
4398 Error_Msg_Strlen
:= Rnm
'Length;
4399 Error_Msg_N
-- CODEFIX
4400 ("\possible misspelling of ""~""",
4401 Get_Pragma_Arg
(Arg
));
4410 if Implementation_Restriction
(R_Id
) then
4411 Check_Restriction
(No_Implementation_Restrictions
, Arg
);
4414 -- If this is a warning, then set the warning unless we already
4415 -- have a real restriction active (we never want a warning to
4416 -- override a real restriction).
4419 if not Restriction_Active
(R_Id
) then
4420 Set_Restriction
(R_Id
, N
);
4421 Restriction_Warnings
(R_Id
) := True;
4424 -- If real restriction case, then set it and make sure that the
4425 -- restriction warning flag is off, since a real restriction
4426 -- always overrides a warning.
4429 Set_Restriction
(R_Id
, N
);
4430 Restriction_Warnings
(R_Id
) := False;
4433 -- Check for obsolescent restrictions in Ada 2005 mode
4436 and then Ada_Version
>= Ada_2005
4437 and then (R_Id
= No_Asynchronous_Control
4439 R_Id
= No_Unchecked_Deallocation
4441 R_Id
= No_Unchecked_Conversion
)
4443 Check_Restriction
(No_Obsolescent_Features
, N
);
4446 -- A very special case that must be processed here: pragma
4447 -- Restrictions (No_Exceptions) turns off all run-time
4448 -- checking. This is a bit dubious in terms of the formal
4449 -- language definition, but it is what is intended by RM
4450 -- H.4(12). Restriction_Warnings never affects generated code
4451 -- so this is done only in the real restriction case.
4453 if R_Id
= No_Exceptions
and then not Warn
then
4454 Scope_Suppress
:= (others => True);
4457 -- Case of No_Dependence => unit-name. Note that the parser
4458 -- already made the necessary entry in the No_Dependence table.
4460 elsif Id
= Name_No_Dependence
then
4461 Check_Unit_Name
(Expr
);
4463 -- All other cases of restriction identifier present
4466 R_Id
:= Get_Restriction_Id
(Process_Restriction_Synonyms
(Arg
));
4467 Analyze_And_Resolve
(Expr
, Any_Integer
);
4469 if R_Id
not in All_Parameter_Restrictions
then
4471 ("invalid restriction parameter identifier", Arg
);
4473 elsif not Is_OK_Static_Expression
(Expr
) then
4474 Flag_Non_Static_Expr
4475 ("value must be static expression!", Expr
);
4478 elsif not Is_Integer_Type
(Etype
(Expr
))
4479 or else Expr_Value
(Expr
) < 0
4482 ("value must be non-negative integer", Arg
);
4485 -- Restriction pragma is active
4487 Val
:= Expr_Value
(Expr
);
4489 if not UI_Is_In_Int_Range
(Val
) then
4491 ("pragma ignored, value too large?", Arg
);
4494 -- Warning case. If the real restriction is active, then we
4495 -- ignore the request, since warning never overrides a real
4496 -- restriction. Otherwise we set the proper warning. Note that
4497 -- this circuit sets the warning again if it is already set,
4498 -- which is what we want, since the constant may have changed.
4501 if not Restriction_Active
(R_Id
) then
4503 (R_Id
, N
, Integer (UI_To_Int
(Val
)));
4504 Restriction_Warnings
(R_Id
) := True;
4507 -- Real restriction case, set restriction and make sure warning
4508 -- flag is off since real restriction always overrides warning.
4511 Set_Restriction
(R_Id
, N
, Integer (UI_To_Int
(Val
)));
4512 Restriction_Warnings
(R_Id
) := False;
4518 end Process_Restrictions_Or_Restriction_Warnings
;
4520 ---------------------------------
4521 -- Process_Suppress_Unsuppress --
4522 ---------------------------------
4524 -- Note: this procedure makes entries in the check suppress data
4525 -- structures managed by Sem. See spec of package Sem for full
4526 -- details on how we handle recording of check suppression.
4528 procedure Process_Suppress_Unsuppress
(Suppress_Case
: Boolean) is
4533 In_Package_Spec
: constant Boolean :=
4534 Is_Package_Or_Generic_Package
(Current_Scope
)
4535 and then not In_Package_Body
(Current_Scope
);
4537 procedure Suppress_Unsuppress_Echeck
(E
: Entity_Id
; C
: Check_Id
);
4538 -- Used to suppress a single check on the given entity
4540 --------------------------------
4541 -- Suppress_Unsuppress_Echeck --
4542 --------------------------------
4544 procedure Suppress_Unsuppress_Echeck
(E
: Entity_Id
; C
: Check_Id
) is
4546 Set_Checks_May_Be_Suppressed
(E
);
4548 if In_Package_Spec
then
4549 Push_Global_Suppress_Stack_Entry
4552 Suppress
=> Suppress_Case
);
4555 Push_Local_Suppress_Stack_Entry
4558 Suppress
=> Suppress_Case
);
4561 -- If this is a first subtype, and the base type is distinct,
4562 -- then also set the suppress flags on the base type.
4564 if Is_First_Subtype
(E
)
4565 and then Etype
(E
) /= E
4567 Suppress_Unsuppress_Echeck
(Etype
(E
), C
);
4569 end Suppress_Unsuppress_Echeck
;
4571 -- Start of processing for Process_Suppress_Unsuppress
4574 -- Suppress/Unsuppress can appear as a configuration pragma, or in a
4575 -- declarative part or a package spec (RM 11.5(5)).
4577 if not Is_Configuration_Pragma
then
4578 Check_Is_In_Decl_Part_Or_Package_Spec
;
4581 Check_At_Least_N_Arguments
(1);
4582 Check_At_Most_N_Arguments
(2);
4583 Check_No_Identifier
(Arg1
);
4584 Check_Arg_Is_Identifier
(Arg1
);
4586 C
:= Get_Check_Id
(Chars
(Expression
(Arg1
)));
4588 if C
= No_Check_Id
then
4590 ("argument of pragma% is not valid check name", Arg1
);
4593 if not Suppress_Case
4594 and then (C
= All_Checks
or else C
= Overflow_Check
)
4596 Opt
.Overflow_Checks_Unsuppressed
:= True;
4599 if Arg_Count
= 1 then
4601 -- Make an entry in the local scope suppress table. This is the
4602 -- table that directly shows the current value of the scope
4603 -- suppress check for any check id value.
4605 if C
= All_Checks
then
4607 -- For All_Checks, we set all specific predefined checks with
4608 -- the exception of Elaboration_Check, which is handled
4609 -- specially because of not wanting All_Checks to have the
4610 -- effect of deactivating static elaboration order processing.
4612 for J
in Scope_Suppress
'Range loop
4613 if J
/= Elaboration_Check
then
4614 Scope_Suppress
(J
) := Suppress_Case
;
4618 -- If not All_Checks, and predefined check, then set appropriate
4619 -- scope entry. Note that we will set Elaboration_Check if this
4620 -- is explicitly specified.
4622 elsif C
in Predefined_Check_Id
then
4623 Scope_Suppress
(C
) := Suppress_Case
;
4626 -- Also make an entry in the Local_Entity_Suppress table
4628 Push_Local_Suppress_Stack_Entry
4631 Suppress
=> Suppress_Case
);
4633 -- Case of two arguments present, where the check is suppressed for
4634 -- a specified entity (given as the second argument of the pragma)
4637 -- This is obsolescent in Ada 2005 mode
4639 if Ada_Version
>= Ada_2005
then
4640 Check_Restriction
(No_Obsolescent_Features
, Arg2
);
4643 Check_Optional_Identifier
(Arg2
, Name_On
);
4644 E_Id
:= Expression
(Arg2
);
4647 if not Is_Entity_Name
(E_Id
) then
4649 ("second argument of pragma% must be entity name", Arg2
);
4658 -- Enforce RM 11.5(7) which requires that for a pragma that
4659 -- appears within a package spec, the named entity must be
4660 -- within the package spec. We allow the package name itself
4661 -- to be mentioned since that makes sense, although it is not
4662 -- strictly allowed by 11.5(7).
4665 and then E
/= Current_Scope
4666 and then Scope
(E
) /= Current_Scope
4669 ("entity in pragma% is not in package spec (RM 11.5(7))",
4673 -- Loop through homonyms. As noted below, in the case of a package
4674 -- spec, only homonyms within the package spec are considered.
4677 Suppress_Unsuppress_Echeck
(E
, C
);
4679 if Is_Generic_Instance
(E
)
4680 and then Is_Subprogram
(E
)
4681 and then Present
(Alias
(E
))
4683 Suppress_Unsuppress_Echeck
(Alias
(E
), C
);
4686 -- Move to next homonym
4691 -- If we are within a package specification, the pragma only
4692 -- applies to homonyms in the same scope.
4694 exit when In_Package_Spec
4695 and then Scope
(E
) /= Current_Scope
;
4698 end Process_Suppress_Unsuppress
;
4704 procedure Set_Exported
(E
: Entity_Id
; Arg
: Node_Id
) is
4706 if Is_Imported
(E
) then
4708 ("cannot export entity& that was previously imported", Arg
);
4710 elsif Present
(Address_Clause
(E
)) then
4712 ("cannot export entity& that has an address clause", Arg
);
4715 Set_Is_Exported
(E
);
4717 -- Generate a reference for entity explicitly, because the
4718 -- identifier may be overloaded and name resolution will not
4721 Generate_Reference
(E
, Arg
);
4723 -- Deal with exporting non-library level entity
4725 if not Is_Library_Level_Entity
(E
) then
4727 -- Not allowed at all for subprograms
4729 if Is_Subprogram
(E
) then
4730 Error_Pragma_Arg
("local subprogram& cannot be exported", Arg
);
4732 -- Otherwise set public and statically allocated
4736 Set_Is_Statically_Allocated
(E
);
4738 -- Warn if the corresponding W flag is set and the pragma comes
4739 -- from source. The latter may not be true e.g. on VMS where we
4740 -- expand export pragmas for exception codes associated with
4741 -- imported or exported exceptions. We do not want to generate
4742 -- a warning for something that the user did not write.
4744 if Warn_On_Export_Import
4745 and then Comes_From_Source
(Arg
)
4748 ("?& has been made static as a result of Export", Arg
, E
);
4750 ("\this usage is non-standard and non-portable", Arg
);
4755 if Warn_On_Export_Import
and then Is_Type
(E
) then
4756 Error_Msg_NE
("exporting a type has no effect?", Arg
, E
);
4759 if Warn_On_Export_Import
and Inside_A_Generic
then
4761 ("all instances of& will have the same external name?", Arg
, E
);
4765 ----------------------------------------------
4766 -- Set_Extended_Import_Export_External_Name --
4767 ----------------------------------------------
4769 procedure Set_Extended_Import_Export_External_Name
4770 (Internal_Ent
: Entity_Id
;
4771 Arg_External
: Node_Id
)
4773 Old_Name
: constant Node_Id
:= Interface_Name
(Internal_Ent
);
4777 if No
(Arg_External
) then
4781 Check_Arg_Is_External_Name
(Arg_External
);
4783 if Nkind
(Arg_External
) = N_String_Literal
then
4784 if String_Length
(Strval
(Arg_External
)) = 0 then
4787 New_Name
:= Adjust_External_Name_Case
(Arg_External
);
4790 elsif Nkind
(Arg_External
) = N_Identifier
then
4791 New_Name
:= Get_Default_External_Name
(Arg_External
);
4793 -- Check_Arg_Is_External_Name should let through only identifiers and
4794 -- string literals or static string expressions (which are folded to
4795 -- string literals).
4798 raise Program_Error
;
4801 -- If we already have an external name set (by a prior normal Import
4802 -- or Export pragma), then the external names must match
4804 if Present
(Interface_Name
(Internal_Ent
)) then
4805 Check_Matching_Internal_Names
: declare
4806 S1
: constant String_Id
:= Strval
(Old_Name
);
4807 S2
: constant String_Id
:= Strval
(New_Name
);
4810 -- Called if names do not match
4816 procedure Mismatch
is
4818 Error_Msg_Sloc
:= Sloc
(Old_Name
);
4820 ("external name does not match that given #",
4824 -- Start of processing for Check_Matching_Internal_Names
4827 if String_Length
(S1
) /= String_Length
(S2
) then
4831 for J
in 1 .. String_Length
(S1
) loop
4832 if Get_String_Char
(S1
, J
) /= Get_String_Char
(S2
, J
) then
4837 end Check_Matching_Internal_Names
;
4839 -- Otherwise set the given name
4842 Set_Encoded_Interface_Name
(Internal_Ent
, New_Name
);
4843 Check_Duplicated_Export_Name
(New_Name
);
4845 end Set_Extended_Import_Export_External_Name
;
4851 procedure Set_Imported
(E
: Entity_Id
) is
4853 -- Error message if already imported or exported
4855 if Is_Exported
(E
) or else Is_Imported
(E
) then
4857 -- Error if being set Exported twice
4859 if Is_Exported
(E
) then
4860 Error_Msg_NE
("entity& was previously exported", N
, E
);
4862 -- OK if Import/Interface case
4864 elsif Import_Interface_Present
(N
) then
4867 -- Error if being set Imported twice
4870 Error_Msg_NE
("entity& was previously imported", N
, E
);
4873 Error_Msg_Name_1
:= Pname
;
4875 ("\(pragma% applies to all previous entities)", N
);
4877 Error_Msg_Sloc
:= Sloc
(E
);
4878 Error_Msg_NE
("\import not allowed for& declared#", N
, E
);
4880 -- Here if not previously imported or exported, OK to import
4883 Set_Is_Imported
(E
);
4885 -- If the entity is an object that is not at the library level,
4886 -- then it is statically allocated. We do not worry about objects
4887 -- with address clauses in this context since they are not really
4888 -- imported in the linker sense.
4891 and then not Is_Library_Level_Entity
(E
)
4892 and then No
(Address_Clause
(E
))
4894 Set_Is_Statically_Allocated
(E
);
4901 -------------------------
4902 -- Set_Mechanism_Value --
4903 -------------------------
4905 -- Note: the mechanism name has not been analyzed (and cannot indeed be
4906 -- analyzed, since it is semantic nonsense), so we get it in the exact
4907 -- form created by the parser.
4909 procedure Set_Mechanism_Value
(Ent
: Entity_Id
; Mech_Name
: Node_Id
) is
4912 Mech_Name_Id
: Name_Id
;
4914 procedure Bad_Class
;
4915 -- Signal bad descriptor class name
4917 procedure Bad_Mechanism
;
4918 -- Signal bad mechanism name
4924 procedure Bad_Class
is
4926 Error_Pragma_Arg
("unrecognized descriptor class name", Class
);
4929 -------------------------
4930 -- Bad_Mechanism_Value --
4931 -------------------------
4933 procedure Bad_Mechanism
is
4935 Error_Pragma_Arg
("unrecognized mechanism name", Mech_Name
);
4938 -- Start of processing for Set_Mechanism_Value
4941 if Mechanism
(Ent
) /= Default_Mechanism
then
4943 ("mechanism for & has already been set", Mech_Name
, Ent
);
4946 -- MECHANISM_NAME ::= value | reference | descriptor |
4949 if Nkind
(Mech_Name
) = N_Identifier
then
4950 if Chars
(Mech_Name
) = Name_Value
then
4951 Set_Mechanism
(Ent
, By_Copy
);
4954 elsif Chars
(Mech_Name
) = Name_Reference
then
4955 Set_Mechanism
(Ent
, By_Reference
);
4958 elsif Chars
(Mech_Name
) = Name_Descriptor
then
4959 Check_VMS
(Mech_Name
);
4961 -- Descriptor => Short_Descriptor if pragma was given
4963 if Short_Descriptors
then
4964 Set_Mechanism
(Ent
, By_Short_Descriptor
);
4966 Set_Mechanism
(Ent
, By_Descriptor
);
4971 elsif Chars
(Mech_Name
) = Name_Short_Descriptor
then
4972 Check_VMS
(Mech_Name
);
4973 Set_Mechanism
(Ent
, By_Short_Descriptor
);
4976 elsif Chars
(Mech_Name
) = Name_Copy
then
4978 ("bad mechanism name, Value assumed", Mech_Name
);
4984 -- MECHANISM_NAME ::= descriptor (CLASS_NAME) |
4985 -- short_descriptor (CLASS_NAME)
4986 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
4988 -- Note: this form is parsed as an indexed component
4990 elsif Nkind
(Mech_Name
) = N_Indexed_Component
then
4991 Class
:= First
(Expressions
(Mech_Name
));
4993 if Nkind
(Prefix
(Mech_Name
)) /= N_Identifier
4994 or else not (Chars
(Prefix
(Mech_Name
)) = Name_Descriptor
or else
4995 Chars
(Prefix
(Mech_Name
)) = Name_Short_Descriptor
)
4996 or else Present
(Next
(Class
))
5000 Mech_Name_Id
:= Chars
(Prefix
(Mech_Name
));
5002 -- Change Descriptor => Short_Descriptor if pragma was given
5004 if Mech_Name_Id
= Name_Descriptor
5005 and then Short_Descriptors
5007 Mech_Name_Id
:= Name_Short_Descriptor
;
5011 -- MECHANISM_NAME ::= descriptor (Class => CLASS_NAME) |
5012 -- short_descriptor (Class => CLASS_NAME)
5013 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
5015 -- Note: this form is parsed as a function call
5017 elsif Nkind
(Mech_Name
) = N_Function_Call
then
5018 Param
:= First
(Parameter_Associations
(Mech_Name
));
5020 if Nkind
(Name
(Mech_Name
)) /= N_Identifier
5021 or else not (Chars
(Name
(Mech_Name
)) = Name_Descriptor
or else
5022 Chars
(Name
(Mech_Name
)) = Name_Short_Descriptor
)
5023 or else Present
(Next
(Param
))
5024 or else No
(Selector_Name
(Param
))
5025 or else Chars
(Selector_Name
(Param
)) /= Name_Class
5029 Class
:= Explicit_Actual_Parameter
(Param
);
5030 Mech_Name_Id
:= Chars
(Name
(Mech_Name
));
5037 -- Fall through here with Class set to descriptor class name
5039 Check_VMS
(Mech_Name
);
5041 if Nkind
(Class
) /= N_Identifier
then
5044 elsif Mech_Name_Id
= Name_Descriptor
5045 and then Chars
(Class
) = Name_UBS
5047 Set_Mechanism
(Ent
, By_Descriptor_UBS
);
5049 elsif Mech_Name_Id
= Name_Descriptor
5050 and then Chars
(Class
) = Name_UBSB
5052 Set_Mechanism
(Ent
, By_Descriptor_UBSB
);
5054 elsif Mech_Name_Id
= Name_Descriptor
5055 and then Chars
(Class
) = Name_UBA
5057 Set_Mechanism
(Ent
, By_Descriptor_UBA
);
5059 elsif Mech_Name_Id
= Name_Descriptor
5060 and then Chars
(Class
) = Name_S
5062 Set_Mechanism
(Ent
, By_Descriptor_S
);
5064 elsif Mech_Name_Id
= Name_Descriptor
5065 and then Chars
(Class
) = Name_SB
5067 Set_Mechanism
(Ent
, By_Descriptor_SB
);
5069 elsif Mech_Name_Id
= Name_Descriptor
5070 and then Chars
(Class
) = Name_A
5072 Set_Mechanism
(Ent
, By_Descriptor_A
);
5074 elsif Mech_Name_Id
= Name_Descriptor
5075 and then Chars
(Class
) = Name_NCA
5077 Set_Mechanism
(Ent
, By_Descriptor_NCA
);
5079 elsif Mech_Name_Id
= Name_Short_Descriptor
5080 and then Chars
(Class
) = Name_UBS
5082 Set_Mechanism
(Ent
, By_Short_Descriptor_UBS
);
5084 elsif Mech_Name_Id
= Name_Short_Descriptor
5085 and then Chars
(Class
) = Name_UBSB
5087 Set_Mechanism
(Ent
, By_Short_Descriptor_UBSB
);
5089 elsif Mech_Name_Id
= Name_Short_Descriptor
5090 and then Chars
(Class
) = Name_UBA
5092 Set_Mechanism
(Ent
, By_Short_Descriptor_UBA
);
5094 elsif Mech_Name_Id
= Name_Short_Descriptor
5095 and then Chars
(Class
) = Name_S
5097 Set_Mechanism
(Ent
, By_Short_Descriptor_S
);
5099 elsif Mech_Name_Id
= Name_Short_Descriptor
5100 and then Chars
(Class
) = Name_SB
5102 Set_Mechanism
(Ent
, By_Short_Descriptor_SB
);
5104 elsif Mech_Name_Id
= Name_Short_Descriptor
5105 and then Chars
(Class
) = Name_A
5107 Set_Mechanism
(Ent
, By_Short_Descriptor_A
);
5109 elsif Mech_Name_Id
= Name_Short_Descriptor
5110 and then Chars
(Class
) = Name_NCA
5112 Set_Mechanism
(Ent
, By_Short_Descriptor_NCA
);
5117 end Set_Mechanism_Value
;
5119 ---------------------------
5120 -- Set_Ravenscar_Profile --
5121 ---------------------------
5123 -- The tasks to be done here are
5125 -- Set required policies
5127 -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
5128 -- pragma Locking_Policy (Ceiling_Locking)
5130 -- Set Detect_Blocking mode
5132 -- Set required restrictions (see System.Rident for detailed list)
5134 procedure Set_Ravenscar_Profile
(N
: Node_Id
) is
5136 -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
5138 if Task_Dispatching_Policy
/= ' '
5139 and then Task_Dispatching_Policy
/= 'F'
5141 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
5142 Error_Pragma
("Profile (Ravenscar) incompatible with policy#");
5144 -- Set the FIFO_Within_Priorities policy, but always preserve
5145 -- System_Location since we like the error message with the run time
5149 Task_Dispatching_Policy
:= 'F';
5151 if Task_Dispatching_Policy_Sloc
/= System_Location
then
5152 Task_Dispatching_Policy_Sloc
:= Loc
;
5156 -- pragma Locking_Policy (Ceiling_Locking)
5158 if Locking_Policy
/= ' '
5159 and then Locking_Policy
/= 'C'
5161 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
5162 Error_Pragma
("Profile (Ravenscar) incompatible with policy#");
5164 -- Set the Ceiling_Locking policy, but preserve System_Location since
5165 -- we like the error message with the run time name.
5168 Locking_Policy
:= 'C';
5170 if Locking_Policy_Sloc
/= System_Location
then
5171 Locking_Policy_Sloc
:= Loc
;
5175 -- pragma Detect_Blocking
5177 Detect_Blocking
:= True;
5179 -- Set the corresponding restrictions
5181 Set_Profile_Restrictions
5182 (Ravenscar
, N
, Warn
=> Treat_Restrictions_As_Warnings
);
5183 end Set_Ravenscar_Profile
;
5185 -- Start of processing for Analyze_Pragma
5188 -- Deal with unrecognized pragma
5190 if not Is_Pragma_Name
(Pname
) then
5191 if Warn_On_Unrecognized_Pragma
then
5192 Error_Msg_Name_1
:= Pname
;
5193 Error_Msg_N
("?unrecognized pragma%!", Pragma_Identifier
(N
));
5195 for PN
in First_Pragma_Name
.. Last_Pragma_Name
loop
5196 if Is_Bad_Spelling_Of
(Pname
, PN
) then
5197 Error_Msg_Name_1
:= PN
;
5198 Error_Msg_N
-- CODEFIX
5199 ("\?possible misspelling of %!", Pragma_Identifier
(N
));
5208 -- Here to start processing for recognized pragma
5210 Prag_Id
:= Get_Pragma_Id
(Pname
);
5219 if Present
(Pragma_Argument_Associations
(N
)) then
5220 Arg1
:= First
(Pragma_Argument_Associations
(N
));
5222 if Present
(Arg1
) then
5223 Arg2
:= Next
(Arg1
);
5225 if Present
(Arg2
) then
5226 Arg3
:= Next
(Arg2
);
5228 if Present
(Arg3
) then
5229 Arg4
:= Next
(Arg3
);
5235 -- Count number of arguments
5242 while Present
(Arg_Node
) loop
5243 Arg_Count
:= Arg_Count
+ 1;
5248 -- An enumeration type defines the pragmas that are supported by the
5249 -- implementation. Get_Pragma_Id (in package Prag) transforms a name
5250 -- into the corresponding enumeration value for the following case.
5258 -- pragma Abort_Defer;
5260 when Pragma_Abort_Defer
=>
5262 Check_Arg_Count
(0);
5264 -- The only required semantic processing is to check the
5265 -- placement. This pragma must appear at the start of the
5266 -- statement sequence of a handled sequence of statements.
5268 if Nkind
(Parent
(N
)) /= N_Handled_Sequence_Of_Statements
5269 or else N
/= First
(Statements
(Parent
(N
)))
5280 -- Note: this pragma also has some specific processing in Par.Prag
5281 -- because we want to set the Ada version mode during parsing.
5283 when Pragma_Ada_83
=>
5285 Check_Arg_Count
(0);
5287 -- We really should check unconditionally for proper configuration
5288 -- pragma placement, since we really don't want mixed Ada modes
5289 -- within a single unit, and the GNAT reference manual has always
5290 -- said this was a configuration pragma, but we did not check and
5291 -- are hesitant to add the check now.
5293 -- However, we really cannot tolerate mixing Ada 2005 or Ada 2012
5294 -- with Ada 83 or Ada 95, so we must check if we are in Ada 2005
5295 -- or Ada 2012 mode.
5297 if Ada_Version
>= Ada_05
then
5298 Check_Valid_Configuration_Pragma
;
5301 -- Now set Ada 83 mode
5303 Ada_Version
:= Ada_83
;
5304 Ada_Version_Explicit
:= Ada_Version
;
5312 -- Note: this pragma also has some specific processing in Par.Prag
5313 -- because we want to set the Ada 83 version mode during parsing.
5315 when Pragma_Ada_95
=>
5317 Check_Arg_Count
(0);
5319 -- We really should check unconditionally for proper configuration
5320 -- pragma placement, since we really don't want mixed Ada modes
5321 -- within a single unit, and the GNAT reference manual has always
5322 -- said this was a configuration pragma, but we did not check and
5323 -- are hesitant to add the check now.
5325 -- However, we really cannot tolerate mixing Ada 2005 with Ada 83
5326 -- or Ada 95, so we must check if we are in Ada 2005 mode.
5328 if Ada_Version
>= Ada_05
then
5329 Check_Valid_Configuration_Pragma
;
5332 -- Now set Ada 95 mode
5334 Ada_Version
:= Ada_95
;
5335 Ada_Version_Explicit
:= Ada_Version
;
5337 ---------------------
5338 -- Ada_05/Ada_2005 --
5339 ---------------------
5342 -- pragma Ada_05 (LOCAL_NAME);
5345 -- pragma Ada_2005 (LOCAL_NAME):
5347 -- Note: these pragma also have some specific processing in Par.Prag
5348 -- because we want to set the Ada 2005 version mode during parsing.
5350 when Pragma_Ada_05 | Pragma_Ada_2005
=> declare
5356 if Arg_Count
= 1 then
5357 Check_Arg_Is_Local_Name
(Arg1
);
5358 E_Id
:= Expression
(Arg1
);
5360 if Etype
(E_Id
) = Any_Type
then
5364 Set_Is_Ada_2005_Only
(Entity
(E_Id
));
5367 Check_Arg_Count
(0);
5369 -- For Ada_2005 we unconditionally enforce the documented
5370 -- configuration pragma placement, since we do not want to
5371 -- tolerate mixed modes in a unit involving Ada 2005. That
5372 -- would cause real difficulties for those cases where there
5373 -- are incompatibilities between Ada 95 and Ada 2005.
5375 Check_Valid_Configuration_Pragma
;
5377 -- Now set Ada 2005 mode
5379 Ada_Version
:= Ada_05
;
5380 Ada_Version_Explicit
:= Ada_05
;
5384 ---------------------
5385 -- Ada_12/Ada_2012 --
5386 ---------------------
5391 -- Note: these pragma also have some specific processing in Par.Prag
5392 -- because we want to set the Ada 2012 version mode during parsing.
5394 when Pragma_Ada_12 | Pragma_Ada_2012
=>
5396 Check_Arg_Count
(0);
5398 -- For Ada_2012 we unconditionally enforce the documented
5399 -- configuration pragma placement, since we do not want to
5400 -- tolerate mixed modes in a unit involving Ada 2012. That would
5401 -- cause real difficulties for those cases where there are
5402 -- incompatibilities between Ada 95 and Ada 2005/Ada 2012.
5404 Check_Valid_Configuration_Pragma
;
5406 -- Now set Ada 2012 mode
5408 Ada_Version
:= Ada_12
;
5409 Ada_Version_Explicit
:= Ada_12
;
5411 ----------------------
5412 -- All_Calls_Remote --
5413 ----------------------
5415 -- pragma All_Calls_Remote [(library_package_NAME)];
5417 when Pragma_All_Calls_Remote
=> All_Calls_Remote
: declare
5418 Lib_Entity
: Entity_Id
;
5421 Check_Ada_83_Warning
;
5422 Check_Valid_Library_Unit_Pragma
;
5424 if Nkind
(N
) = N_Null_Statement
then
5428 Lib_Entity
:= Find_Lib_Unit_Name
;
5430 -- This pragma should only apply to a RCI unit (RM E.2.3(23))
5432 if Present
(Lib_Entity
)
5433 and then not Debug_Flag_U
5435 if not Is_Remote_Call_Interface
(Lib_Entity
) then
5436 Error_Pragma
("pragma% only apply to rci unit");
5438 -- Set flag for entity of the library unit
5441 Set_Has_All_Calls_Remote
(Lib_Entity
);
5445 end All_Calls_Remote
;
5451 -- pragma Annotate (IDENTIFIER [, IDENTIFIER {, ARG}]);
5452 -- ARG ::= NAME | EXPRESSION
5454 -- The first two arguments are by convention intended to refer to an
5455 -- external tool and a tool-specific function. These arguments are
5458 when Pragma_Annotate
=> Annotate
: begin
5460 Check_At_Least_N_Arguments
(1);
5461 Check_Arg_Is_Identifier
(Arg1
);
5462 Check_No_Identifiers
;
5470 -- Second unanalyzed parameter is optional
5476 while Present
(Arg
) loop
5477 Exp
:= Expression
(Arg
);
5480 if Is_Entity_Name
(Exp
) then
5483 -- For string literals, we assume Standard_String as the
5484 -- type, unless the string contains wide or wide_wide
5487 elsif Nkind
(Exp
) = N_String_Literal
then
5488 if Has_Wide_Wide_Character
(Exp
) then
5489 Resolve
(Exp
, Standard_Wide_Wide_String
);
5490 elsif Has_Wide_Character
(Exp
) then
5491 Resolve
(Exp
, Standard_Wide_String
);
5493 Resolve
(Exp
, Standard_String
);
5496 elsif Is_Overloaded
(Exp
) then
5498 ("ambiguous argument for pragma%", Exp
);
5514 -- pragma Assert ([Check =>] Boolean_EXPRESSION
5515 -- [, [Message =>] Static_String_EXPRESSION]);
5517 when Pragma_Assert
=> Assert
: declare
5523 Check_At_Least_N_Arguments
(1);
5524 Check_At_Most_N_Arguments
(2);
5525 Check_Arg_Order
((Name_Check
, Name_Message
));
5526 Check_Optional_Identifier
(Arg1
, Name_Check
);
5528 -- We treat pragma Assert as equivalent to:
5530 -- pragma Check (Assertion, condition [, msg]);
5532 -- So rewrite pragma in this manner, and analyze the result
5534 Expr
:= Get_Pragma_Arg
(Arg1
);
5536 Make_Pragma_Argument_Association
(Loc
,
5538 Make_Identifier
(Loc
,
5539 Chars
=> Name_Assertion
)),
5541 Make_Pragma_Argument_Association
(Sloc
(Expr
),
5542 Expression
=> Expr
));
5544 if Arg_Count
> 1 then
5545 Check_Optional_Identifier
(Arg2
, Name_Message
);
5546 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg2
), Standard_String
);
5547 Append_To
(Newa
, Relocate_Node
(Arg2
));
5552 Chars
=> Name_Check
,
5553 Pragma_Argument_Associations
=> Newa
));
5557 ----------------------
5558 -- Assertion_Policy --
5559 ----------------------
5561 -- pragma Assertion_Policy (Check | Ignore)
5563 when Pragma_Assertion_Policy
=> Assertion_Policy
: declare
5568 Check_Valid_Configuration_Pragma
;
5569 Check_Arg_Count
(1);
5570 Check_No_Identifiers
;
5571 Check_Arg_Is_One_Of
(Arg1
, Name_Check
, Name_Ignore
);
5573 -- We treat pragma Assertion_Policy as equivalent to:
5575 -- pragma Check_Policy (Assertion, policy)
5577 -- So rewrite the pragma in that manner and link on to the chain
5578 -- of Check_Policy pragmas, marking the pragma as analyzed.
5580 Policy
:= Get_Pragma_Arg
(Arg1
);
5584 Chars
=> Name_Check_Policy
,
5586 Pragma_Argument_Associations
=> New_List
(
5587 Make_Pragma_Argument_Association
(Loc
,
5589 Make_Identifier
(Loc
,
5590 Chars
=> Name_Assertion
)),
5592 Make_Pragma_Argument_Association
(Loc
,
5594 Make_Identifier
(Sloc
(Policy
),
5595 Chars
=> Chars
(Policy
))))));
5598 Set_Next_Pragma
(N
, Opt
.Check_Policy_List
);
5599 Opt
.Check_Policy_List
:= N
;
5600 end Assertion_Policy
;
5602 ------------------------------
5603 -- Assume_No_Invalid_Values --
5604 ------------------------------
5606 -- pragma Assume_No_Invalid_Values (On | Off);
5608 when Pragma_Assume_No_Invalid_Values
=>
5610 Check_Valid_Configuration_Pragma
;
5611 Check_Arg_Count
(1);
5612 Check_No_Identifiers
;
5613 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
5615 if Chars
(Expression
(Arg1
)) = Name_On
then
5616 Assume_No_Invalid_Values
:= True;
5618 Assume_No_Invalid_Values
:= False;
5625 -- pragma AST_Entry (entry_IDENTIFIER);
5627 when Pragma_AST_Entry
=> AST_Entry
: declare
5633 Check_Arg_Count
(1);
5634 Check_No_Identifiers
;
5635 Check_Arg_Is_Local_Name
(Arg1
);
5636 Ent
:= Entity
(Expression
(Arg1
));
5638 -- Note: the implementation of the AST_Entry pragma could handle
5639 -- the entry family case fine, but for now we are consistent with
5640 -- the DEC rules, and do not allow the pragma, which of course
5641 -- has the effect of also forbidding the attribute.
5643 if Ekind
(Ent
) /= E_Entry
then
5645 ("pragma% argument must be simple entry name", Arg1
);
5647 elsif Is_AST_Entry
(Ent
) then
5649 ("duplicate % pragma for entry", Arg1
);
5651 elsif Has_Homonym
(Ent
) then
5653 ("pragma% argument cannot specify overloaded entry", Arg1
);
5657 FF
: constant Entity_Id
:= First_Formal
(Ent
);
5660 if Present
(FF
) then
5661 if Present
(Next_Formal
(FF
)) then
5663 ("entry for pragma% can have only one argument",
5666 elsif Parameter_Mode
(FF
) /= E_In_Parameter
then
5668 ("entry parameter for pragma% must have mode IN",
5674 Set_Is_AST_Entry
(Ent
);
5682 -- pragma Asynchronous (LOCAL_NAME);
5684 when Pragma_Asynchronous
=> Asynchronous
: declare
5692 procedure Process_Async_Pragma
;
5693 -- Common processing for procedure and access-to-procedure case
5695 --------------------------
5696 -- Process_Async_Pragma --
5697 --------------------------
5699 procedure Process_Async_Pragma
is
5702 Set_Is_Asynchronous
(Nm
);
5706 -- The formals should be of mode IN (RM E.4.1(6))
5709 while Present
(S
) loop
5710 Formal
:= Defining_Identifier
(S
);
5712 if Nkind
(Formal
) = N_Defining_Identifier
5713 and then Ekind
(Formal
) /= E_In_Parameter
5716 ("pragma% procedure can only have IN parameter",
5723 Set_Is_Asynchronous
(Nm
);
5724 end Process_Async_Pragma
;
5726 -- Start of processing for pragma Asynchronous
5729 Check_Ada_83_Warning
;
5730 Check_No_Identifiers
;
5731 Check_Arg_Count
(1);
5732 Check_Arg_Is_Local_Name
(Arg1
);
5734 if Debug_Flag_U
then
5738 C_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
5739 Analyze
(Expression
(Arg1
));
5740 Nm
:= Entity
(Expression
(Arg1
));
5742 if not Is_Remote_Call_Interface
(C_Ent
)
5743 and then not Is_Remote_Types
(C_Ent
)
5745 -- This pragma should only appear in an RCI or Remote Types
5746 -- unit (RM E.4.1(4)).
5749 ("pragma% not in Remote_Call_Interface or " &
5750 "Remote_Types unit");
5753 if Ekind
(Nm
) = E_Procedure
5754 and then Nkind
(Parent
(Nm
)) = N_Procedure_Specification
5756 if not Is_Remote_Call_Interface
(Nm
) then
5758 ("pragma% cannot be applied on non-remote procedure",
5762 L
:= Parameter_Specifications
(Parent
(Nm
));
5763 Process_Async_Pragma
;
5766 elsif Ekind
(Nm
) = E_Function
then
5768 ("pragma% cannot be applied to function", Arg1
);
5770 elsif Is_Remote_Access_To_Subprogram_Type
(Nm
) then
5772 if Is_Record_Type
(Nm
) then
5774 -- A record type that is the Equivalent_Type for a remote
5775 -- access-to-subprogram type.
5777 N
:= Declaration_Node
(Corresponding_Remote_Type
(Nm
));
5780 -- A non-expanded RAS type (distribution is not enabled)
5782 N
:= Declaration_Node
(Nm
);
5785 if Nkind
(N
) = N_Full_Type_Declaration
5786 and then Nkind
(Type_Definition
(N
)) =
5787 N_Access_Procedure_Definition
5789 L
:= Parameter_Specifications
(Type_Definition
(N
));
5790 Process_Async_Pragma
;
5792 if Is_Asynchronous
(Nm
)
5793 and then Expander_Active
5794 and then Get_PCS_Name
/= Name_No_DSA
5796 RACW_Type_Is_Asynchronous
(Underlying_RACW_Type
(Nm
));
5801 ("pragma% cannot reference access-to-function type",
5805 -- Only other possibility is Access-to-class-wide type
5807 elsif Is_Access_Type
(Nm
)
5808 and then Is_Class_Wide_Type
(Designated_Type
(Nm
))
5810 Check_First_Subtype
(Arg1
);
5811 Set_Is_Asynchronous
(Nm
);
5812 if Expander_Active
then
5813 RACW_Type_Is_Asynchronous
(Nm
);
5817 Error_Pragma_Arg
("inappropriate argument for pragma%", Arg1
);
5825 -- pragma Atomic (LOCAL_NAME);
5827 when Pragma_Atomic
=>
5828 Process_Atomic_Shared_Volatile
;
5830 -----------------------
5831 -- Atomic_Components --
5832 -----------------------
5834 -- pragma Atomic_Components (array_LOCAL_NAME);
5836 -- This processing is shared by Volatile_Components
5838 when Pragma_Atomic_Components |
5839 Pragma_Volatile_Components
=>
5841 Atomic_Components
: declare
5848 Check_Ada_83_Warning
;
5849 Check_No_Identifiers
;
5850 Check_Arg_Count
(1);
5851 Check_Arg_Is_Local_Name
(Arg1
);
5852 E_Id
:= Expression
(Arg1
);
5854 if Etype
(E_Id
) = Any_Type
then
5860 if Rep_Item_Too_Early
(E
, N
)
5862 Rep_Item_Too_Late
(E
, N
)
5867 D
:= Declaration_Node
(E
);
5870 if (K
= N_Full_Type_Declaration
and then Is_Array_Type
(E
))
5872 ((Ekind
(E
) = E_Constant
or else Ekind
(E
) = E_Variable
)
5873 and then Nkind
(D
) = N_Object_Declaration
5874 and then Nkind
(Object_Definition
(D
)) =
5875 N_Constrained_Array_Definition
)
5877 -- The flag is set on the object, or on the base type
5879 if Nkind
(D
) /= N_Object_Declaration
then
5883 Set_Has_Volatile_Components
(E
);
5885 if Prag_Id
= Pragma_Atomic_Components
then
5886 Set_Has_Atomic_Components
(E
);
5888 if Is_Packed
(E
) then
5889 Set_Is_Packed
(E
, False);
5892 ("?Pack canceled, cannot pack atomic components",
5898 Error_Pragma_Arg
("inappropriate entity for pragma%", Arg1
);
5900 end Atomic_Components
;
5902 --------------------
5903 -- Attach_Handler --
5904 --------------------
5906 -- pragma Attach_Handler (handler_NAME, EXPRESSION);
5908 when Pragma_Attach_Handler
=>
5909 Check_Ada_83_Warning
;
5910 Check_No_Identifiers
;
5911 Check_Arg_Count
(2);
5913 if No_Run_Time_Mode
then
5914 Error_Msg_CRT
("Attach_Handler pragma", N
);
5916 Check_Interrupt_Or_Attach_Handler
;
5918 -- The expression that designates the attribute may
5919 -- depend on a discriminant, and is therefore a per-
5920 -- object expression, to be expanded in the init proc.
5921 -- If expansion is enabled, perform semantic checks
5924 if Expander_Active
then
5926 Temp
: constant Node_Id
:=
5927 New_Copy_Tree
(Expression
(Arg2
));
5929 Set_Parent
(Temp
, N
);
5930 Preanalyze_And_Resolve
(Temp
, RTE
(RE_Interrupt_ID
));
5934 Analyze
(Expression
(Arg2
));
5935 Resolve
(Expression
(Arg2
), RTE
(RE_Interrupt_ID
));
5938 Process_Interrupt_Or_Attach_Handler
;
5941 --------------------
5942 -- C_Pass_By_Copy --
5943 --------------------
5945 -- pragma C_Pass_By_Copy ([Max_Size =>] static_integer_EXPRESSION);
5947 when Pragma_C_Pass_By_Copy
=> C_Pass_By_Copy
: declare
5953 Check_Valid_Configuration_Pragma
;
5954 Check_Arg_Count
(1);
5955 Check_Optional_Identifier
(Arg1
, "max_size");
5957 Arg
:= Expression
(Arg1
);
5958 Check_Arg_Is_Static_Expression
(Arg
, Any_Integer
);
5960 Val
:= Expr_Value
(Arg
);
5964 ("maximum size for pragma% must be positive", Arg1
);
5966 elsif UI_Is_In_Int_Range
(Val
) then
5967 Default_C_Record_Mechanism
:= UI_To_Int
(Val
);
5969 -- If a giant value is given, Int'Last will do well enough.
5970 -- If sometime someone complains that a record larger than
5971 -- two gigabytes is not copied, we will worry about it then!
5974 Default_C_Record_Mechanism
:= Mechanism_Type
'Last;
5982 -- pragma Check ([Name =>] Identifier,
5983 -- [Check =>] Boolean_Expression
5984 -- [,[Message =>] String_Expression]);
5986 when Pragma_Check
=> Check
: declare
5991 -- Set True if category of assertions referenced by Name enabled
5995 Check_At_Least_N_Arguments
(2);
5996 Check_At_Most_N_Arguments
(3);
5997 Check_Optional_Identifier
(Arg1
, Name_Name
);
5998 Check_Optional_Identifier
(Arg2
, Name_Check
);
6000 if Arg_Count
= 3 then
6001 Check_Optional_Identifier
(Arg3
, Name_Message
);
6002 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg3
), Standard_String
);
6005 Check_Arg_Is_Identifier
(Arg1
);
6007 -- Indicate if pragma is enabled. The Original_Node reference here
6008 -- is to deal with pragma Assert rewritten as a Check pragma.
6010 Check_On
:= Check_Enabled
(Chars
(Get_Pragma_Arg
(Arg1
)));
6013 Set_Pragma_Enabled
(N
);
6014 Set_Pragma_Enabled
(Original_Node
(N
));
6015 Set_SCO_Pragma_Enabled
(Loc
);
6018 -- If expansion is active and the check is not enabled then we
6019 -- rewrite the Check as:
6021 -- if False and then condition then
6025 -- The reason we do this rewriting during semantic analysis rather
6026 -- than as part of normal expansion is that we cannot analyze and
6027 -- expand the code for the boolean expression directly, or it may
6028 -- cause insertion of actions that would escape the attempt to
6029 -- suppress the check code.
6031 -- Note that the Sloc for the if statement corresponds to the
6032 -- argument condition, not the pragma itself. The reason for this
6033 -- is that we may generate a warning if the condition is False at
6034 -- compile time, and we do not want to delete this warning when we
6035 -- delete the if statement.
6037 Expr
:= Expression
(Arg2
);
6039 if Expander_Active
and then not Check_On
then
6040 Eloc
:= Sloc
(Expr
);
6043 Make_If_Statement
(Eloc
,
6045 Make_And_Then
(Eloc
,
6046 Left_Opnd
=> New_Occurrence_Of
(Standard_False
, Eloc
),
6047 Right_Opnd
=> Expr
),
6048 Then_Statements
=> New_List
(
6049 Make_Null_Statement
(Eloc
))));
6056 Analyze_And_Resolve
(Expr
, Any_Boolean
);
6064 -- pragma Check_Name (check_IDENTIFIER);
6066 when Pragma_Check_Name
=>
6067 Check_No_Identifiers
;
6069 Check_Valid_Configuration_Pragma
;
6070 Check_Arg_Count
(1);
6071 Check_Arg_Is_Identifier
(Arg1
);
6074 Nam
: constant Name_Id
:= Chars
(Expression
(Arg1
));
6077 for J
in Check_Names
.First
.. Check_Names
.Last
loop
6078 if Check_Names
.Table
(J
) = Nam
then
6083 Check_Names
.Append
(Nam
);
6090 -- pragma Check_Policy (
6091 -- [Name =>] IDENTIFIER,
6092 -- [Policy =>] POLICY_IDENTIFIER);
6094 -- POLICY_IDENTIFIER ::= ON | OFF | CHECK | IGNORE
6096 -- Note: this is a configuration pragma, but it is allowed to appear
6099 when Pragma_Check_Policy
=>
6101 Check_Arg_Count
(2);
6102 Check_Optional_Identifier
(Arg1
, Name_Name
);
6103 Check_Optional_Identifier
(Arg2
, Name_Policy
);
6105 (Arg2
, Name_On
, Name_Off
, Name_Check
, Name_Ignore
);
6107 -- A Check_Policy pragma can appear either as a configuration
6108 -- pragma, or in a declarative part or a package spec (see RM
6109 -- 11.5(5) for rules for Suppress/Unsuppress which are also
6110 -- followed for Check_Policy).
6112 if not Is_Configuration_Pragma
then
6113 Check_Is_In_Decl_Part_Or_Package_Spec
;
6116 Set_Next_Pragma
(N
, Opt
.Check_Policy_List
);
6117 Opt
.Check_Policy_List
:= N
;
6119 ---------------------
6120 -- CIL_Constructor --
6121 ---------------------
6123 -- pragma CIL_Constructor ([Entity =>] LOCAL_NAME);
6125 -- Processing for this pragma is shared with Java_Constructor
6131 -- pragma Comment (static_string_EXPRESSION)
6133 -- Processing for pragma Comment shares the circuitry for pragma
6134 -- Ident. The only differences are that Ident enforces a limit of 31
6135 -- characters on its argument, and also enforces limitations on
6136 -- placement for DEC compatibility. Pragma Comment shares neither of
6137 -- these restrictions.
6143 -- pragma Common_Object (
6144 -- [Internal =>] LOCAL_NAME
6145 -- [, [External =>] EXTERNAL_SYMBOL]
6146 -- [, [Size =>] EXTERNAL_SYMBOL]);
6148 -- Processing for this pragma is shared with Psect_Object
6150 ------------------------
6151 -- Compile_Time_Error --
6152 ------------------------
6154 -- pragma Compile_Time_Error
6155 -- (boolean_EXPRESSION, static_string_EXPRESSION);
6157 when Pragma_Compile_Time_Error
=>
6159 Process_Compile_Time_Warning_Or_Error
;
6161 --------------------------
6162 -- Compile_Time_Warning --
6163 --------------------------
6165 -- pragma Compile_Time_Warning
6166 -- (boolean_EXPRESSION, static_string_EXPRESSION);
6168 when Pragma_Compile_Time_Warning
=>
6170 Process_Compile_Time_Warning_Or_Error
;
6176 when Pragma_Compiler_Unit
=>
6178 Check_Arg_Count
(0);
6179 Set_Is_Compiler_Unit
(Get_Source_Unit
(N
));
6181 -----------------------------
6182 -- Complete_Representation --
6183 -----------------------------
6185 -- pragma Complete_Representation;
6187 when Pragma_Complete_Representation
=>
6189 Check_Arg_Count
(0);
6191 if Nkind
(Parent
(N
)) /= N_Record_Representation_Clause
then
6193 ("pragma & must appear within record representation clause");
6196 ----------------------------
6197 -- Complex_Representation --
6198 ----------------------------
6200 -- pragma Complex_Representation ([Entity =>] LOCAL_NAME);
6202 when Pragma_Complex_Representation
=> Complex_Representation
: declare
6209 Check_Arg_Count
(1);
6210 Check_Optional_Identifier
(Arg1
, Name_Entity
);
6211 Check_Arg_Is_Local_Name
(Arg1
);
6212 E_Id
:= Expression
(Arg1
);
6214 if Etype
(E_Id
) = Any_Type
then
6220 if not Is_Record_Type
(E
) then
6222 ("argument for pragma% must be record type", Arg1
);
6225 Ent
:= First_Entity
(E
);
6228 or else No
(Next_Entity
(Ent
))
6229 or else Present
(Next_Entity
(Next_Entity
(Ent
)))
6230 or else not Is_Floating_Point_Type
(Etype
(Ent
))
6231 or else Etype
(Ent
) /= Etype
(Next_Entity
(Ent
))
6234 ("record for pragma% must have two fields of the same "
6235 & "floating-point type", Arg1
);
6238 Set_Has_Complex_Representation
(Base_Type
(E
));
6240 -- We need to treat the type has having a non-standard
6241 -- representation, for back-end purposes, even though in
6242 -- general a complex will have the default representation
6243 -- of a record with two real components.
6245 Set_Has_Non_Standard_Rep
(Base_Type
(E
));
6247 end Complex_Representation
;
6249 -------------------------
6250 -- Component_Alignment --
6251 -------------------------
6253 -- pragma Component_Alignment (
6254 -- [Form =>] ALIGNMENT_CHOICE
6255 -- [, [Name =>] type_LOCAL_NAME]);
6257 -- ALIGNMENT_CHOICE ::=
6259 -- | Component_Size_4
6263 when Pragma_Component_Alignment
=> Component_AlignmentP
: declare
6264 Args
: Args_List
(1 .. 2);
6265 Names
: constant Name_List
(1 .. 2) := (
6269 Form
: Node_Id
renames Args
(1);
6270 Name
: Node_Id
renames Args
(2);
6272 Atype
: Component_Alignment_Kind
;
6277 Gather_Associations
(Names
, Args
);
6280 Error_Pragma
("missing Form argument for pragma%");
6283 Check_Arg_Is_Identifier
(Form
);
6285 -- Get proper alignment, note that Default = Component_Size on all
6286 -- machines we have so far, and we want to set this value rather
6287 -- than the default value to indicate that it has been explicitly
6288 -- set (and thus will not get overridden by the default component
6289 -- alignment for the current scope)
6291 if Chars
(Form
) = Name_Component_Size
then
6292 Atype
:= Calign_Component_Size
;
6294 elsif Chars
(Form
) = Name_Component_Size_4
then
6295 Atype
:= Calign_Component_Size_4
;
6297 elsif Chars
(Form
) = Name_Default
then
6298 Atype
:= Calign_Component_Size
;
6300 elsif Chars
(Form
) = Name_Storage_Unit
then
6301 Atype
:= Calign_Storage_Unit
;
6305 ("invalid Form parameter for pragma%", Form
);
6308 -- Case with no name, supplied, affects scope table entry
6312 (Scope_Stack
.Last
).Component_Alignment_Default
:= Atype
;
6314 -- Case of name supplied
6317 Check_Arg_Is_Local_Name
(Name
);
6319 Typ
:= Entity
(Name
);
6322 or else Rep_Item_Too_Early
(Typ
, N
)
6326 Typ
:= Underlying_Type
(Typ
);
6329 if not Is_Record_Type
(Typ
)
6330 and then not Is_Array_Type
(Typ
)
6333 ("Name parameter of pragma% must identify record or " &
6334 "array type", Name
);
6337 -- An explicit Component_Alignment pragma overrides an
6338 -- implicit pragma Pack, but not an explicit one.
6340 if not Has_Pragma_Pack
(Base_Type
(Typ
)) then
6341 Set_Is_Packed
(Base_Type
(Typ
), False);
6342 Set_Component_Alignment
(Base_Type
(Typ
), Atype
);
6345 end Component_AlignmentP
;
6351 -- pragma Controlled (first_subtype_LOCAL_NAME);
6353 when Pragma_Controlled
=> Controlled
: declare
6357 Check_No_Identifiers
;
6358 Check_Arg_Count
(1);
6359 Check_Arg_Is_Local_Name
(Arg1
);
6360 Arg
:= Expression
(Arg1
);
6362 if not Is_Entity_Name
(Arg
)
6363 or else not Is_Access_Type
(Entity
(Arg
))
6365 Error_Pragma_Arg
("pragma% requires access type", Arg1
);
6367 Set_Has_Pragma_Controlled
(Base_Type
(Entity
(Arg
)));
6375 -- pragma Convention ([Convention =>] convention_IDENTIFIER,
6376 -- [Entity =>] LOCAL_NAME);
6378 when Pragma_Convention
=> Convention
: declare
6381 pragma Warnings
(Off
, C
);
6382 pragma Warnings
(Off
, E
);
6384 Check_Arg_Order
((Name_Convention
, Name_Entity
));
6385 Check_Ada_83_Warning
;
6386 Check_Arg_Count
(2);
6387 Process_Convention
(C
, E
);
6390 ---------------------------
6391 -- Convention_Identifier --
6392 ---------------------------
6394 -- pragma Convention_Identifier ([Name =>] IDENTIFIER,
6395 -- [Convention =>] convention_IDENTIFIER);
6397 when Pragma_Convention_Identifier
=> Convention_Identifier
: declare
6403 Check_Arg_Order
((Name_Name
, Name_Convention
));
6404 Check_Arg_Count
(2);
6405 Check_Optional_Identifier
(Arg1
, Name_Name
);
6406 Check_Optional_Identifier
(Arg2
, Name_Convention
);
6407 Check_Arg_Is_Identifier
(Arg1
);
6408 Check_Arg_Is_Identifier
(Arg2
);
6409 Idnam
:= Chars
(Expression
(Arg1
));
6410 Cname
:= Chars
(Expression
(Arg2
));
6412 if Is_Convention_Name
(Cname
) then
6413 Record_Convention_Identifier
6414 (Idnam
, Get_Convention_Id
(Cname
));
6417 ("second arg for % pragma must be convention", Arg2
);
6419 end Convention_Identifier
;
6425 -- pragma CPP_Class ([Entity =>] local_NAME)
6427 when Pragma_CPP_Class
=> CPP_Class
: declare
6432 if Warn_On_Obsolescent_Feature
then
6434 ("'G'N'A'T pragma cpp'_class is now obsolete; replace it" &
6435 " by pragma import?", N
);
6439 Check_Arg_Count
(1);
6440 Check_Optional_Identifier
(Arg1
, Name_Entity
);
6441 Check_Arg_Is_Local_Name
(Arg1
);
6443 Arg
:= Expression
(Arg1
);
6446 if Etype
(Arg
) = Any_Type
then
6450 if not Is_Entity_Name
(Arg
)
6451 or else not Is_Type
(Entity
(Arg
))
6453 Error_Pragma_Arg
("pragma% requires a type mark", Arg1
);
6456 Typ
:= Entity
(Arg
);
6458 if not Is_Tagged_Type
(Typ
) then
6459 Error_Pragma_Arg
("pragma% applicable to tagged types ", Arg1
);
6462 -- Types treated as CPP classes are treated as limited, but we
6463 -- don't require them to be declared this way. A warning is issued
6464 -- to encourage the user to declare them as limited. This is not
6465 -- an error, for compatibility reasons, because these types have
6466 -- been supported this way for some time.
6468 if not Is_Limited_Type
(Typ
) then
6470 ("imported 'C'P'P type should be " &
6471 "explicitly declared limited?",
6472 Get_Pragma_Arg
(Arg1
));
6474 ("\type will be considered limited",
6475 Get_Pragma_Arg
(Arg1
));
6478 Set_Is_CPP_Class
(Typ
);
6479 Set_Is_Limited_Record
(Typ
);
6480 Set_Convention
(Typ
, Convention_CPP
);
6482 -- Imported CPP types must not have discriminants (because C++
6483 -- classes do not have discriminants).
6485 if Has_Discriminants
(Typ
) then
6487 ("imported 'C'P'P type cannot have discriminants",
6488 First
(Discriminant_Specifications
6489 (Declaration_Node
(Typ
))));
6492 -- Components of imported CPP types must not have default
6493 -- expressions because the constructor (if any) is in the
6496 if Is_Incomplete_Or_Private_Type
(Typ
)
6497 and then No
(Underlying_Type
(Typ
))
6499 -- It should be an error to apply pragma CPP to a private
6500 -- type if the underlying type is not visible (as it is
6501 -- for any representation item). For now, for backward
6502 -- compatibility we do nothing but we cannot check components
6503 -- because they are not available at this stage. All this code
6504 -- will be removed when we cleanup this obsolete GNAT pragma???
6510 Tdef
: constant Node_Id
:=
6511 Type_Definition
(Declaration_Node
(Typ
));
6516 if Nkind
(Tdef
) = N_Record_Definition
then
6517 Clist
:= Component_List
(Tdef
);
6519 pragma Assert
(Nkind
(Tdef
) = N_Derived_Type_Definition
);
6520 Clist
:= Component_List
(Record_Extension_Part
(Tdef
));
6523 if Present
(Clist
) then
6524 Comp
:= First
(Component_Items
(Clist
));
6525 while Present
(Comp
) loop
6526 if Present
(Expression
(Comp
)) then
6528 ("component of imported 'C'P'P type cannot have" &
6529 " default expression", Expression
(Comp
));
6539 ---------------------
6540 -- CPP_Constructor --
6541 ---------------------
6543 -- pragma CPP_Constructor ([Entity =>] LOCAL_NAME
6544 -- [, [External_Name =>] static_string_EXPRESSION ]
6545 -- [, [Link_Name =>] static_string_EXPRESSION ]);
6547 when Pragma_CPP_Constructor
=> CPP_Constructor
: declare
6551 Tag_Typ
: Entity_Id
;
6555 Check_At_Least_N_Arguments
(1);
6556 Check_At_Most_N_Arguments
(3);
6557 Check_Optional_Identifier
(Arg1
, Name_Entity
);
6558 Check_Arg_Is_Local_Name
(Arg1
);
6560 Id
:= Expression
(Arg1
);
6561 Find_Program_Unit_Name
(Id
);
6563 -- If we did not find the name, we are done
6565 if Etype
(Id
) = Any_Type
then
6569 Def_Id
:= Entity
(Id
);
6571 -- Check if already defined as constructor
6573 if Is_Constructor
(Def_Id
) then
6575 ("?duplicate argument for pragma 'C'P'P_Constructor", Arg1
);
6579 if Ekind
(Def_Id
) = E_Function
6580 and then (Is_CPP_Class
(Etype
(Def_Id
))
6581 or else (Is_Class_Wide_Type
(Etype
(Def_Id
))
6583 Is_CPP_Class
(Root_Type
(Etype
(Def_Id
)))))
6585 if Arg_Count
>= 2 then
6586 Set_Imported
(Def_Id
);
6587 Set_Is_Public
(Def_Id
);
6588 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
6591 Set_Has_Completion
(Def_Id
);
6592 Set_Is_Constructor
(Def_Id
);
6594 -- Imported C++ constructors are not dispatching primitives
6595 -- because in C++ they don't have a dispatch table slot.
6596 -- However, in Ada the constructor has the profile of a
6597 -- function that returns a tagged type and therefore it has
6598 -- been treated as a primitive operation during semantic
6599 -- analysis. We now remove it from the list of primitive
6600 -- operations of the type.
6602 if Is_Tagged_Type
(Etype
(Def_Id
))
6603 and then not Is_Class_Wide_Type
(Etype
(Def_Id
))
6605 pragma Assert
(Is_Dispatching_Operation
(Def_Id
));
6606 Tag_Typ
:= Etype
(Def_Id
);
6608 Elmt
:= First_Elmt
(Primitive_Operations
(Tag_Typ
));
6609 while Present
(Elmt
) and then Node
(Elmt
) /= Def_Id
loop
6613 Remove_Elmt
(Primitive_Operations
(Tag_Typ
), Elmt
);
6614 Set_Is_Dispatching_Operation
(Def_Id
, False);
6617 -- For backward compatibility, if the constructor returns a
6618 -- class wide type, and we internally change the return type to
6619 -- the corresponding root type.
6621 if Is_Class_Wide_Type
(Etype
(Def_Id
)) then
6622 Set_Etype
(Def_Id
, Root_Type
(Etype
(Def_Id
)));
6626 ("pragma% requires function returning a 'C'P'P_Class type",
6629 end CPP_Constructor
;
6635 when Pragma_CPP_Virtual
=> CPP_Virtual
: declare
6639 if Warn_On_Obsolescent_Feature
then
6641 ("'G'N'A'T pragma cpp'_virtual is now obsolete and has " &
6650 when Pragma_CPP_Vtable
=> CPP_Vtable
: declare
6654 if Warn_On_Obsolescent_Feature
then
6656 ("'G'N'A'T pragma cpp'_vtable is now obsolete and has " &
6665 -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
6667 when Pragma_Debug
=> Debug
: declare
6675 (Boolean_Literals
(Debug_Pragmas_Enabled
and Expander_Active
),
6678 if Arg_Count
= 2 then
6681 Left_Opnd
=> Relocate_Node
(Cond
),
6682 Right_Opnd
=> Expression
(Arg1
));
6685 -- Rewrite into a conditional with an appropriate condition. We
6686 -- wrap the procedure call in a block so that overhead from e.g.
6687 -- use of the secondary stack does not generate execution overhead
6688 -- for suppressed conditions.
6690 Rewrite
(N
, Make_Implicit_If_Statement
(N
,
6692 Then_Statements
=> New_List
(
6693 Make_Block_Statement
(Loc
,
6694 Handled_Statement_Sequence
=>
6695 Make_Handled_Sequence_Of_Statements
(Loc
,
6696 Statements
=> New_List
(
6697 Relocate_Node
(Debug_Statement
(N
))))))));
6705 -- pragma Debug_Policy (Check | Ignore)
6707 when Pragma_Debug_Policy
=>
6709 Check_Arg_Count
(1);
6710 Check_Arg_Is_One_Of
(Arg1
, Name_Check
, Name_Ignore
);
6711 Debug_Pragmas_Enabled
:= Chars
(Expression
(Arg1
)) = Name_Check
;
6713 ---------------------
6714 -- Detect_Blocking --
6715 ---------------------
6717 -- pragma Detect_Blocking;
6719 when Pragma_Detect_Blocking
=>
6721 Check_Arg_Count
(0);
6722 Check_Valid_Configuration_Pragma
;
6723 Detect_Blocking
:= True;
6729 when Pragma_Dimension
=>
6731 Check_Arg_Count
(4);
6732 Check_No_Identifiers
;
6733 Check_Arg_Is_Local_Name
(Arg1
);
6735 if not Is_Type
(Arg1
) then
6736 Error_Pragma
("first argument for pragma% must be subtype");
6739 Check_Arg_Is_Static_Expression
(Arg2
, Standard_Integer
);
6740 Check_Arg_Is_Static_Expression
(Arg3
, Standard_Integer
);
6741 Check_Arg_Is_Static_Expression
(Arg4
, Standard_Integer
);
6747 -- pragma Discard_Names [([On =>] LOCAL_NAME)];
6749 when Pragma_Discard_Names
=> Discard_Names
: declare
6754 Check_Ada_83_Warning
;
6756 -- Deal with configuration pragma case
6758 if Arg_Count
= 0 and then Is_Configuration_Pragma
then
6759 Global_Discard_Names
:= True;
6762 -- Otherwise, check correct appropriate context
6765 Check_Is_In_Decl_Part_Or_Package_Spec
;
6767 if Arg_Count
= 0 then
6769 -- If there is no parameter, then from now on this pragma
6770 -- applies to any enumeration, exception or tagged type
6771 -- defined in the current declarative part, and recursively
6772 -- to any nested scope.
6774 Set_Discard_Names
(Current_Scope
);
6778 Check_Arg_Count
(1);
6779 Check_Optional_Identifier
(Arg1
, Name_On
);
6780 Check_Arg_Is_Local_Name
(Arg1
);
6782 E_Id
:= Expression
(Arg1
);
6784 if Etype
(E_Id
) = Any_Type
then
6790 if (Is_First_Subtype
(E
)
6792 (Is_Enumeration_Type
(E
) or else Is_Tagged_Type
(E
)))
6793 or else Ekind
(E
) = E_Exception
6795 Set_Discard_Names
(E
);
6798 ("inappropriate entity for pragma%", Arg1
);
6809 -- pragma Elaborate (library_unit_NAME {, library_unit_NAME});
6811 when Pragma_Elaborate
=> Elaborate
: declare
6816 -- Pragma must be in context items list of a compilation unit
6818 if not Is_In_Context_Clause
then
6822 -- Must be at least one argument
6824 if Arg_Count
= 0 then
6825 Error_Pragma
("pragma% requires at least one argument");
6828 -- In Ada 83 mode, there can be no items following it in the
6829 -- context list except other pragmas and implicit with clauses
6830 -- (e.g. those added by use of Rtsfind). In Ada 95 mode, this
6831 -- placement rule does not apply.
6833 if Ada_Version
= Ada_83
and then Comes_From_Source
(N
) then
6835 while Present
(Citem
) loop
6836 if Nkind
(Citem
) = N_Pragma
6837 or else (Nkind
(Citem
) = N_With_Clause
6838 and then Implicit_With
(Citem
))
6843 ("(Ada 83) pragma% must be at end of context clause");
6850 -- Finally, the arguments must all be units mentioned in a with
6851 -- clause in the same context clause. Note we already checked (in
6852 -- Par.Prag) that the arguments are all identifiers or selected
6856 Outer
: while Present
(Arg
) loop
6857 Citem
:= First
(List_Containing
(N
));
6858 Inner
: while Citem
/= N
loop
6859 if Nkind
(Citem
) = N_With_Clause
6860 and then Same_Name
(Name
(Citem
), Expression
(Arg
))
6862 Set_Elaborate_Present
(Citem
, True);
6863 Set_Unit_Name
(Expression
(Arg
), Name
(Citem
));
6865 -- With the pragma present, elaboration calls on
6866 -- subprograms from the named unit need no further
6867 -- checks, as long as the pragma appears in the current
6868 -- compilation unit. If the pragma appears in some unit
6869 -- in the context, there might still be a need for an
6870 -- Elaborate_All_Desirable from the current compilation
6871 -- to the named unit, so we keep the check enabled.
6873 if In_Extended_Main_Source_Unit
(N
) then
6874 Set_Suppress_Elaboration_Warnings
6875 (Entity
(Name
(Citem
)));
6886 ("argument of pragma% is not with'ed unit", Arg
);
6892 -- Give a warning if operating in static mode with -gnatwl
6893 -- (elaboration warnings enabled) switch set.
6895 if Elab_Warnings
and not Dynamic_Elaboration_Checks
then
6897 ("?use of pragma Elaborate may not be safe", N
);
6899 ("?use pragma Elaborate_All instead if possible", N
);
6907 -- pragma Elaborate_All (library_unit_NAME {, library_unit_NAME});
6909 when Pragma_Elaborate_All
=> Elaborate_All
: declare
6914 Check_Ada_83_Warning
;
6916 -- Pragma must be in context items list of a compilation unit
6918 if not Is_In_Context_Clause
then
6922 -- Must be at least one argument
6924 if Arg_Count
= 0 then
6925 Error_Pragma
("pragma% requires at least one argument");
6928 -- Note: unlike pragma Elaborate, pragma Elaborate_All does not
6929 -- have to appear at the end of the context clause, but may
6930 -- appear mixed in with other items, even in Ada 83 mode.
6932 -- Final check: the arguments must all be units mentioned in
6933 -- a with clause in the same context clause. Note that we
6934 -- already checked (in Par.Prag) that all the arguments are
6935 -- either identifiers or selected components.
6938 Outr
: while Present
(Arg
) loop
6939 Citem
:= First
(List_Containing
(N
));
6940 Innr
: while Citem
/= N
loop
6941 if Nkind
(Citem
) = N_With_Clause
6942 and then Same_Name
(Name
(Citem
), Expression
(Arg
))
6944 Set_Elaborate_All_Present
(Citem
, True);
6945 Set_Unit_Name
(Expression
(Arg
), Name
(Citem
));
6947 -- Suppress warnings and elaboration checks on the named
6948 -- unit if the pragma is in the current compilation, as
6949 -- for pragma Elaborate.
6951 if In_Extended_Main_Source_Unit
(N
) then
6952 Set_Suppress_Elaboration_Warnings
6953 (Entity
(Name
(Citem
)));
6962 Set_Error_Posted
(N
);
6964 ("argument of pragma% is not with'ed unit", Arg
);
6971 --------------------
6972 -- Elaborate_Body --
6973 --------------------
6975 -- pragma Elaborate_Body [( library_unit_NAME )];
6977 when Pragma_Elaborate_Body
=> Elaborate_Body
: declare
6978 Cunit_Node
: Node_Id
;
6979 Cunit_Ent
: Entity_Id
;
6982 Check_Ada_83_Warning
;
6983 Check_Valid_Library_Unit_Pragma
;
6985 if Nkind
(N
) = N_Null_Statement
then
6989 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
6990 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
6992 if Nkind_In
(Unit
(Cunit_Node
), N_Package_Body
,
6995 Error_Pragma
("pragma% must refer to a spec, not a body");
6997 Set_Body_Required
(Cunit_Node
, True);
6998 Set_Has_Pragma_Elaborate_Body
(Cunit_Ent
);
7000 -- If we are in dynamic elaboration mode, then we suppress
7001 -- elaboration warnings for the unit, since it is definitely
7002 -- fine NOT to do dynamic checks at the first level (and such
7003 -- checks will be suppressed because no elaboration boolean
7004 -- is created for Elaborate_Body packages).
7006 -- But in the static model of elaboration, Elaborate_Body is
7007 -- definitely NOT good enough to ensure elaboration safety on
7008 -- its own, since the body may WITH other units that are not
7009 -- safe from an elaboration point of view, so a client must
7010 -- still do an Elaborate_All on such units.
7012 -- Debug flag -gnatdD restores the old behavior of 3.13, where
7013 -- Elaborate_Body always suppressed elab warnings.
7015 if Dynamic_Elaboration_Checks
or Debug_Flag_DD
then
7016 Set_Suppress_Elaboration_Warnings
(Cunit_Ent
);
7021 ------------------------
7022 -- Elaboration_Checks --
7023 ------------------------
7025 -- pragma Elaboration_Checks (Static | Dynamic);
7027 when Pragma_Elaboration_Checks
=>
7029 Check_Arg_Count
(1);
7030 Check_Arg_Is_One_Of
(Arg1
, Name_Static
, Name_Dynamic
);
7031 Dynamic_Elaboration_Checks
:=
7032 (Chars
(Get_Pragma_Arg
(Arg1
)) = Name_Dynamic
);
7038 -- pragma Eliminate (
7039 -- [Unit_Name =>] IDENTIFIER | SELECTED_COMPONENT,
7040 -- [,[Entity =>] IDENTIFIER |
7041 -- SELECTED_COMPONENT |
7043 -- [, OVERLOADING_RESOLUTION]);
7045 -- OVERLOADING_RESOLUTION ::= PARAMETER_AND_RESULT_TYPE_PROFILE |
7048 -- PARAMETER_AND_RESULT_TYPE_PROFILE ::= PROCEDURE_PROFILE |
7051 -- PROCEDURE_PROFILE ::= Parameter_Types => PARAMETER_TYPES
7053 -- FUNCTION_PROFILE ::= [Parameter_Types => PARAMETER_TYPES,]
7054 -- Result_Type => result_SUBTYPE_NAME]
7056 -- PARAMETER_TYPES ::= (SUBTYPE_NAME {, SUBTYPE_NAME})
7057 -- SUBTYPE_NAME ::= STRING_LITERAL
7059 -- SOURCE_LOCATION ::= Source_Location => SOURCE_TRACE
7060 -- SOURCE_TRACE ::= STRING_LITERAL
7062 when Pragma_Eliminate
=> Eliminate
: declare
7063 Args
: Args_List
(1 .. 5);
7064 Names
: constant Name_List
(1 .. 5) := (
7067 Name_Parameter_Types
,
7069 Name_Source_Location
);
7071 Unit_Name
: Node_Id
renames Args
(1);
7072 Entity
: Node_Id
renames Args
(2);
7073 Parameter_Types
: Node_Id
renames Args
(3);
7074 Result_Type
: Node_Id
renames Args
(4);
7075 Source_Location
: Node_Id
renames Args
(5);
7079 Check_Valid_Configuration_Pragma
;
7080 Gather_Associations
(Names
, Args
);
7082 if No
(Unit_Name
) then
7083 Error_Pragma
("missing Unit_Name argument for pragma%");
7087 and then (Present
(Parameter_Types
)
7089 Present
(Result_Type
)
7091 Present
(Source_Location
))
7093 Error_Pragma
("missing Entity argument for pragma%");
7096 if (Present
(Parameter_Types
)
7098 Present
(Result_Type
))
7100 Present
(Source_Location
)
7103 ("parameter profile and source location cannot " &
7104 "be used together in pragma%");
7107 Process_Eliminate_Pragma
7121 -- [ Convention =>] convention_IDENTIFIER,
7122 -- [ Entity =>] local_NAME
7123 -- [, [External_Name =>] static_string_EXPRESSION ]
7124 -- [, [Link_Name =>] static_string_EXPRESSION ]);
7126 when Pragma_Export
=> Export
: declare
7130 pragma Warnings
(Off
, C
);
7133 Check_Ada_83_Warning
;
7139 Check_At_Least_N_Arguments
(2);
7140 Check_At_Most_N_Arguments
(4);
7141 Process_Convention
(C
, Def_Id
);
7143 if Ekind
(Def_Id
) /= E_Constant
then
7144 Note_Possible_Modification
(Expression
(Arg2
), Sure
=> False);
7147 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
7148 Set_Exported
(Def_Id
, Arg2
);
7150 -- If the entity is a deferred constant, propagate the information
7151 -- to the full view, because gigi elaborates the full view only.
7153 if Ekind
(Def_Id
) = E_Constant
7154 and then Present
(Full_View
(Def_Id
))
7157 Id2
: constant Entity_Id
:= Full_View
(Def_Id
);
7159 Set_Is_Exported
(Id2
, Is_Exported
(Def_Id
));
7160 Set_First_Rep_Item
(Id2
, First_Rep_Item
(Def_Id
));
7161 Set_Interface_Name
(Id2
, Einfo
.Interface_Name
(Def_Id
));
7166 ----------------------
7167 -- Export_Exception --
7168 ----------------------
7170 -- pragma Export_Exception (
7171 -- [Internal =>] LOCAL_NAME
7172 -- [, [External =>] EXTERNAL_SYMBOL]
7173 -- [, [Form =>] Ada | VMS]
7174 -- [, [Code =>] static_integer_EXPRESSION]);
7176 when Pragma_Export_Exception
=> Export_Exception
: declare
7177 Args
: Args_List
(1 .. 4);
7178 Names
: constant Name_List
(1 .. 4) := (
7184 Internal
: Node_Id
renames Args
(1);
7185 External
: Node_Id
renames Args
(2);
7186 Form
: Node_Id
renames Args
(3);
7187 Code
: Node_Id
renames Args
(4);
7192 if Inside_A_Generic
then
7193 Error_Pragma
("pragma% cannot be used for generic entities");
7196 Gather_Associations
(Names
, Args
);
7197 Process_Extended_Import_Export_Exception_Pragma
(
7198 Arg_Internal
=> Internal
,
7199 Arg_External
=> External
,
7203 if not Is_VMS_Exception
(Entity
(Internal
)) then
7204 Set_Exported
(Entity
(Internal
), Internal
);
7206 end Export_Exception
;
7208 ---------------------
7209 -- Export_Function --
7210 ---------------------
7212 -- pragma Export_Function (
7213 -- [Internal =>] LOCAL_NAME
7214 -- [, [External =>] EXTERNAL_SYMBOL]
7215 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
7216 -- [, [Result_Type =>] TYPE_DESIGNATOR]
7217 -- [, [Mechanism =>] MECHANISM]
7218 -- [, [Result_Mechanism =>] MECHANISM_NAME]);
7220 -- EXTERNAL_SYMBOL ::=
7222 -- | static_string_EXPRESSION
7224 -- PARAMETER_TYPES ::=
7226 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7228 -- TYPE_DESIGNATOR ::=
7230 -- | subtype_Name ' Access
7234 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7236 -- MECHANISM_ASSOCIATION ::=
7237 -- [formal_parameter_NAME =>] MECHANISM_NAME
7239 -- MECHANISM_NAME ::=
7242 -- | Descriptor [([Class =>] CLASS_NAME)]
7244 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7246 when Pragma_Export_Function
=> Export_Function
: declare
7247 Args
: Args_List
(1 .. 6);
7248 Names
: constant Name_List
(1 .. 6) := (
7251 Name_Parameter_Types
,
7254 Name_Result_Mechanism
);
7256 Internal
: Node_Id
renames Args
(1);
7257 External
: Node_Id
renames Args
(2);
7258 Parameter_Types
: Node_Id
renames Args
(3);
7259 Result_Type
: Node_Id
renames Args
(4);
7260 Mechanism
: Node_Id
renames Args
(5);
7261 Result_Mechanism
: Node_Id
renames Args
(6);
7265 Gather_Associations
(Names
, Args
);
7266 Process_Extended_Import_Export_Subprogram_Pragma
(
7267 Arg_Internal
=> Internal
,
7268 Arg_External
=> External
,
7269 Arg_Parameter_Types
=> Parameter_Types
,
7270 Arg_Result_Type
=> Result_Type
,
7271 Arg_Mechanism
=> Mechanism
,
7272 Arg_Result_Mechanism
=> Result_Mechanism
);
7273 end Export_Function
;
7279 -- pragma Export_Object (
7280 -- [Internal =>] LOCAL_NAME
7281 -- [, [External =>] EXTERNAL_SYMBOL]
7282 -- [, [Size =>] EXTERNAL_SYMBOL]);
7284 -- EXTERNAL_SYMBOL ::=
7286 -- | static_string_EXPRESSION
7288 -- PARAMETER_TYPES ::=
7290 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7292 -- TYPE_DESIGNATOR ::=
7294 -- | subtype_Name ' Access
7298 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7300 -- MECHANISM_ASSOCIATION ::=
7301 -- [formal_parameter_NAME =>] MECHANISM_NAME
7303 -- MECHANISM_NAME ::=
7306 -- | Descriptor [([Class =>] CLASS_NAME)]
7308 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7310 when Pragma_Export_Object
=> Export_Object
: declare
7311 Args
: Args_List
(1 .. 3);
7312 Names
: constant Name_List
(1 .. 3) := (
7317 Internal
: Node_Id
renames Args
(1);
7318 External
: Node_Id
renames Args
(2);
7319 Size
: Node_Id
renames Args
(3);
7323 Gather_Associations
(Names
, Args
);
7324 Process_Extended_Import_Export_Object_Pragma
(
7325 Arg_Internal
=> Internal
,
7326 Arg_External
=> External
,
7330 ----------------------
7331 -- Export_Procedure --
7332 ----------------------
7334 -- pragma Export_Procedure (
7335 -- [Internal =>] LOCAL_NAME
7336 -- [, [External =>] EXTERNAL_SYMBOL]
7337 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
7338 -- [, [Mechanism =>] MECHANISM]);
7340 -- EXTERNAL_SYMBOL ::=
7342 -- | static_string_EXPRESSION
7344 -- PARAMETER_TYPES ::=
7346 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7348 -- TYPE_DESIGNATOR ::=
7350 -- | subtype_Name ' Access
7354 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7356 -- MECHANISM_ASSOCIATION ::=
7357 -- [formal_parameter_NAME =>] MECHANISM_NAME
7359 -- MECHANISM_NAME ::=
7362 -- | Descriptor [([Class =>] CLASS_NAME)]
7364 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7366 when Pragma_Export_Procedure
=> Export_Procedure
: declare
7367 Args
: Args_List
(1 .. 4);
7368 Names
: constant Name_List
(1 .. 4) := (
7371 Name_Parameter_Types
,
7374 Internal
: Node_Id
renames Args
(1);
7375 External
: Node_Id
renames Args
(2);
7376 Parameter_Types
: Node_Id
renames Args
(3);
7377 Mechanism
: Node_Id
renames Args
(4);
7381 Gather_Associations
(Names
, Args
);
7382 Process_Extended_Import_Export_Subprogram_Pragma
(
7383 Arg_Internal
=> Internal
,
7384 Arg_External
=> External
,
7385 Arg_Parameter_Types
=> Parameter_Types
,
7386 Arg_Mechanism
=> Mechanism
);
7387 end Export_Procedure
;
7393 -- pragma Export_Value (
7394 -- [Value =>] static_integer_EXPRESSION,
7395 -- [Link_Name =>] static_string_EXPRESSION);
7397 when Pragma_Export_Value
=>
7399 Check_Arg_Order
((Name_Value
, Name_Link_Name
));
7400 Check_Arg_Count
(2);
7402 Check_Optional_Identifier
(Arg1
, Name_Value
);
7403 Check_Arg_Is_Static_Expression
(Arg1
, Any_Integer
);
7405 Check_Optional_Identifier
(Arg2
, Name_Link_Name
);
7406 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
7408 -----------------------------
7409 -- Export_Valued_Procedure --
7410 -----------------------------
7412 -- pragma Export_Valued_Procedure (
7413 -- [Internal =>] LOCAL_NAME
7414 -- [, [External =>] EXTERNAL_SYMBOL,]
7415 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
7416 -- [, [Mechanism =>] MECHANISM]);
7418 -- EXTERNAL_SYMBOL ::=
7420 -- | static_string_EXPRESSION
7422 -- PARAMETER_TYPES ::=
7424 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7426 -- TYPE_DESIGNATOR ::=
7428 -- | subtype_Name ' Access
7432 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7434 -- MECHANISM_ASSOCIATION ::=
7435 -- [formal_parameter_NAME =>] MECHANISM_NAME
7437 -- MECHANISM_NAME ::=
7440 -- | Descriptor [([Class =>] CLASS_NAME)]
7442 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7444 when Pragma_Export_Valued_Procedure
=>
7445 Export_Valued_Procedure
: declare
7446 Args
: Args_List
(1 .. 4);
7447 Names
: constant Name_List
(1 .. 4) := (
7450 Name_Parameter_Types
,
7453 Internal
: Node_Id
renames Args
(1);
7454 External
: Node_Id
renames Args
(2);
7455 Parameter_Types
: Node_Id
renames Args
(3);
7456 Mechanism
: Node_Id
renames Args
(4);
7460 Gather_Associations
(Names
, Args
);
7461 Process_Extended_Import_Export_Subprogram_Pragma
(
7462 Arg_Internal
=> Internal
,
7463 Arg_External
=> External
,
7464 Arg_Parameter_Types
=> Parameter_Types
,
7465 Arg_Mechanism
=> Mechanism
);
7466 end Export_Valued_Procedure
;
7472 -- pragma Extend_System ([Name =>] Identifier);
7474 when Pragma_Extend_System
=> Extend_System
: declare
7477 Check_Valid_Configuration_Pragma
;
7478 Check_Arg_Count
(1);
7479 Check_Optional_Identifier
(Arg1
, Name_Name
);
7480 Check_Arg_Is_Identifier
(Arg1
);
7482 Get_Name_String
(Chars
(Expression
(Arg1
)));
7485 and then Name_Buffer
(1 .. 4) = "aux_"
7487 if Present
(System_Extend_Pragma_Arg
) then
7488 if Chars
(Expression
(Arg1
)) =
7489 Chars
(Expression
(System_Extend_Pragma_Arg
))
7493 Error_Msg_Sloc
:= Sloc
(System_Extend_Pragma_Arg
);
7494 Error_Pragma
("pragma% conflicts with that #");
7498 System_Extend_Pragma_Arg
:= Arg1
;
7500 if not GNAT_Mode
then
7501 System_Extend_Unit
:= Arg1
;
7505 Error_Pragma
("incorrect name for pragma%, must be Aux_xxx");
7509 ------------------------
7510 -- Extensions_Allowed --
7511 ------------------------
7513 -- pragma Extensions_Allowed (ON | OFF);
7515 when Pragma_Extensions_Allowed
=>
7517 Check_Arg_Count
(1);
7518 Check_No_Identifiers
;
7519 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
7521 if Chars
(Expression
(Arg1
)) = Name_On
then
7522 Extensions_Allowed
:= True;
7523 Ada_Version
:= Ada_Version_Type
'Last;
7526 Extensions_Allowed
:= False;
7527 Ada_Version
:= Ada_Version_Explicit
;
7534 -- pragma External (
7535 -- [ Convention =>] convention_IDENTIFIER,
7536 -- [ Entity =>] local_NAME
7537 -- [, [External_Name =>] static_string_EXPRESSION ]
7538 -- [, [Link_Name =>] static_string_EXPRESSION ]);
7540 when Pragma_External
=> External
: declare
7544 pragma Warnings
(Off
, C
);
7553 Check_At_Least_N_Arguments
(2);
7554 Check_At_Most_N_Arguments
(4);
7555 Process_Convention
(C
, Def_Id
);
7556 Note_Possible_Modification
(Expression
(Arg2
), Sure
=> False);
7557 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
7558 Set_Exported
(Def_Id
, Arg2
);
7561 --------------------------
7562 -- External_Name_Casing --
7563 --------------------------
7565 -- pragma External_Name_Casing (
7566 -- UPPERCASE | LOWERCASE
7567 -- [, AS_IS | UPPERCASE | LOWERCASE]);
7569 when Pragma_External_Name_Casing
=> External_Name_Casing
: declare
7572 Check_No_Identifiers
;
7574 if Arg_Count
= 2 then
7576 (Arg2
, Name_As_Is
, Name_Uppercase
, Name_Lowercase
);
7578 case Chars
(Get_Pragma_Arg
(Arg2
)) is
7580 Opt
.External_Name_Exp_Casing
:= As_Is
;
7582 when Name_Uppercase
=>
7583 Opt
.External_Name_Exp_Casing
:= Uppercase
;
7585 when Name_Lowercase
=>
7586 Opt
.External_Name_Exp_Casing
:= Lowercase
;
7593 Check_Arg_Count
(1);
7596 Check_Arg_Is_One_Of
(Arg1
, Name_Uppercase
, Name_Lowercase
);
7598 case Chars
(Get_Pragma_Arg
(Arg1
)) is
7599 when Name_Uppercase
=>
7600 Opt
.External_Name_Imp_Casing
:= Uppercase
;
7602 when Name_Lowercase
=>
7603 Opt
.External_Name_Imp_Casing
:= Lowercase
;
7608 end External_Name_Casing
;
7610 --------------------------
7611 -- Favor_Top_Level --
7612 --------------------------
7614 -- pragma Favor_Top_Level (type_NAME);
7616 when Pragma_Favor_Top_Level
=> Favor_Top_Level
: declare
7617 Named_Entity
: Entity_Id
;
7621 Check_No_Identifiers
;
7622 Check_Arg_Count
(1);
7623 Check_Arg_Is_Local_Name
(Arg1
);
7624 Named_Entity
:= Entity
(Expression
(Arg1
));
7626 -- If it's an access-to-subprogram type (in particular, not a
7627 -- subtype), set the flag on that type.
7629 if Is_Access_Subprogram_Type
(Named_Entity
) then
7630 Set_Can_Use_Internal_Rep
(Named_Entity
, False);
7632 -- Otherwise it's an error (name denotes the wrong sort of entity)
7636 ("access-to-subprogram type expected", Expression
(Arg1
));
7638 end Favor_Top_Level
;
7644 -- pragma Fast_Math;
7646 when Pragma_Fast_Math
=>
7648 Check_No_Identifiers
;
7649 Check_Valid_Configuration_Pragma
;
7652 ---------------------------
7653 -- Finalize_Storage_Only --
7654 ---------------------------
7656 -- pragma Finalize_Storage_Only (first_subtype_LOCAL_NAME);
7658 when Pragma_Finalize_Storage_Only
=> Finalize_Storage
: declare
7659 Assoc
: constant Node_Id
:= Arg1
;
7660 Type_Id
: constant Node_Id
:= Expression
(Assoc
);
7665 Check_No_Identifiers
;
7666 Check_Arg_Count
(1);
7667 Check_Arg_Is_Local_Name
(Arg1
);
7669 Find_Type
(Type_Id
);
7670 Typ
:= Entity
(Type_Id
);
7673 or else Rep_Item_Too_Early
(Typ
, N
)
7677 Typ
:= Underlying_Type
(Typ
);
7680 if not Is_Controlled
(Typ
) then
7681 Error_Pragma
("pragma% must specify controlled type");
7684 Check_First_Subtype
(Arg1
);
7686 if Finalize_Storage_Only
(Typ
) then
7687 Error_Pragma
("duplicate pragma%, only one allowed");
7689 elsif not Rep_Item_Too_Late
(Typ
, N
) then
7690 Set_Finalize_Storage_Only
(Base_Type
(Typ
), True);
7692 end Finalize_Storage
;
7694 --------------------------
7695 -- Float_Representation --
7696 --------------------------
7698 -- pragma Float_Representation (FLOAT_REP[, float_type_LOCAL_NAME]);
7700 -- FLOAT_REP ::= VAX_Float | IEEE_Float
7702 when Pragma_Float_Representation
=> Float_Representation
: declare
7710 if Arg_Count
= 1 then
7711 Check_Valid_Configuration_Pragma
;
7713 Check_Arg_Count
(2);
7714 Check_Optional_Identifier
(Arg2
, Name_Entity
);
7715 Check_Arg_Is_Local_Name
(Arg2
);
7718 Check_No_Identifier
(Arg1
);
7719 Check_Arg_Is_One_Of
(Arg1
, Name_VAX_Float
, Name_IEEE_Float
);
7721 if not OpenVMS_On_Target
then
7722 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
7724 ("?pragma% ignored (applies only to Open'V'M'S)");
7730 -- One argument case
7732 if Arg_Count
= 1 then
7733 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
7734 if Opt
.Float_Format
= 'I' then
7735 Error_Pragma
("'I'E'E'E format previously specified");
7738 Opt
.Float_Format
:= 'V';
7741 if Opt
.Float_Format
= 'V' then
7742 Error_Pragma
("'V'A'X format previously specified");
7745 Opt
.Float_Format
:= 'I';
7748 Set_Standard_Fpt_Formats
;
7750 -- Two argument case
7753 Argx
:= Get_Pragma_Arg
(Arg2
);
7755 if not Is_Entity_Name
(Argx
)
7756 or else not Is_Floating_Point_Type
(Entity
(Argx
))
7759 ("second argument of% pragma must be floating-point type",
7763 Ent
:= Entity
(Argx
);
7764 Digs
:= UI_To_Int
(Digits_Value
(Ent
));
7766 -- Two arguments, VAX_Float case
7768 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
7770 when 6 => Set_F_Float
(Ent
);
7771 when 9 => Set_D_Float
(Ent
);
7772 when 15 => Set_G_Float
(Ent
);
7776 ("wrong digits value, must be 6,9 or 15", Arg2
);
7779 -- Two arguments, IEEE_Float case
7783 when 6 => Set_IEEE_Short
(Ent
);
7784 when 15 => Set_IEEE_Long
(Ent
);
7788 ("wrong digits value, must be 6 or 15", Arg2
);
7792 end Float_Representation
;
7798 -- pragma Ident (static_string_EXPRESSION)
7800 -- Note: pragma Comment shares this processing. Pragma Comment is
7801 -- identical to Ident, except that the restriction of the argument to
7802 -- 31 characters and the placement restrictions are not enforced for
7805 when Pragma_Ident | Pragma_Comment
=> Ident
: declare
7810 Check_Arg_Count
(1);
7811 Check_No_Identifiers
;
7812 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
7815 -- For pragma Ident, preserve DEC compatibility by requiring the
7816 -- pragma to appear in a declarative part or package spec.
7818 if Prag_Id
= Pragma_Ident
then
7819 Check_Is_In_Decl_Part_Or_Package_Spec
;
7822 Str
:= Expr_Value_S
(Expression
(Arg1
));
7829 GP
:= Parent
(Parent
(N
));
7831 if Nkind_In
(GP
, N_Package_Declaration
,
7832 N_Generic_Package_Declaration
)
7837 -- If we have a compilation unit, then record the ident value,
7838 -- checking for improper duplication.
7840 if Nkind
(GP
) = N_Compilation_Unit
then
7841 CS
:= Ident_String
(Current_Sem_Unit
);
7843 if Present
(CS
) then
7845 -- For Ident, we do not permit multiple instances
7847 if Prag_Id
= Pragma_Ident
then
7848 Error_Pragma
("duplicate% pragma not permitted");
7850 -- For Comment, we concatenate the string, unless we want
7851 -- to preserve the tree structure for ASIS.
7853 elsif not ASIS_Mode
then
7854 Start_String
(Strval
(CS
));
7855 Store_String_Char
(' ');
7856 Store_String_Chars
(Strval
(Str
));
7857 Set_Strval
(CS
, End_String
);
7861 -- In VMS, the effect of IDENT is achieved by passing
7862 -- --identification=name as a --for-linker switch.
7864 if OpenVMS_On_Target
then
7867 ("--for-linker=--identification=");
7868 String_To_Name_Buffer
(Strval
(Str
));
7869 Store_String_Chars
(Name_Buffer
(1 .. Name_Len
));
7871 -- Only the last processed IDENT is saved. The main
7872 -- purpose is so an IDENT associated with a main
7873 -- procedure will be used in preference to an IDENT
7874 -- associated with a with'd package.
7876 Replace_Linker_Option_String
7877 (End_String
, "--for-linker=--identification=");
7880 Set_Ident_String
(Current_Sem_Unit
, Str
);
7883 -- For subunits, we just ignore the Ident, since in GNAT these
7884 -- are not separate object files, and hence not separate units
7885 -- in the unit table.
7887 elsif Nkind
(GP
) = N_Subunit
then
7890 -- Otherwise we have a misplaced pragma Ident, but we ignore
7891 -- this if we are in an instantiation, since it comes from
7892 -- a generic, and has no relevance to the instantiation.
7894 elsif Prag_Id
= Pragma_Ident
then
7895 if Instantiation_Location
(Loc
) = No_Location
then
7896 Error_Pragma
("pragma% only allowed at outer level");
7902 --------------------------
7903 -- Implemented_By_Entry --
7904 --------------------------
7906 -- pragma Implemented_By_Entry (DIRECT_NAME);
7908 when Pragma_Implemented_By_Entry
=> Implemented_By_Entry
: declare
7913 Check_Arg_Count
(1);
7914 Check_No_Identifiers
;
7915 Check_Arg_Is_Identifier
(Arg1
);
7916 Check_Arg_Is_Local_Name
(Arg1
);
7917 Ent
:= Entity
(Expression
(Arg1
));
7919 -- Pragma Implemented_By_Entry must be applied only to protected
7920 -- synchronized or task interface primitives.
7922 if (Ekind
(Ent
) /= E_Function
7923 and then Ekind
(Ent
) /= E_Procedure
)
7924 or else not Present
(First_Formal
(Ent
))
7925 or else not Is_Concurrent_Interface
(Etype
(First_Formal
(Ent
)))
7928 ("pragma % must be applied to a concurrent interface " &
7932 if Einfo
.Implemented_By_Entry
(Ent
)
7933 and then Warn_On_Redundant_Constructs
7935 Error_Pragma
("?duplicate pragma%!");
7937 Set_Implemented_By_Entry
(Ent
);
7940 end Implemented_By_Entry
;
7942 -----------------------
7943 -- Implicit_Packing --
7944 -----------------------
7946 -- pragma Implicit_Packing;
7948 when Pragma_Implicit_Packing
=>
7950 Check_Arg_Count
(0);
7951 Implicit_Packing
:= True;
7958 -- [Convention =>] convention_IDENTIFIER,
7959 -- [Entity =>] local_NAME
7960 -- [, [External_Name =>] static_string_EXPRESSION ]
7961 -- [, [Link_Name =>] static_string_EXPRESSION ]);
7963 when Pragma_Import
=>
7964 Check_Ada_83_Warning
;
7970 Check_At_Least_N_Arguments
(2);
7971 Check_At_Most_N_Arguments
(4);
7972 Process_Import_Or_Interface
;
7974 ----------------------
7975 -- Import_Exception --
7976 ----------------------
7978 -- pragma Import_Exception (
7979 -- [Internal =>] LOCAL_NAME
7980 -- [, [External =>] EXTERNAL_SYMBOL]
7981 -- [, [Form =>] Ada | VMS]
7982 -- [, [Code =>] static_integer_EXPRESSION]);
7984 when Pragma_Import_Exception
=> Import_Exception
: declare
7985 Args
: Args_List
(1 .. 4);
7986 Names
: constant Name_List
(1 .. 4) := (
7992 Internal
: Node_Id
renames Args
(1);
7993 External
: Node_Id
renames Args
(2);
7994 Form
: Node_Id
renames Args
(3);
7995 Code
: Node_Id
renames Args
(4);
7999 Gather_Associations
(Names
, Args
);
8001 if Present
(External
) and then Present
(Code
) then
8003 ("cannot give both External and Code options for pragma%");
8006 Process_Extended_Import_Export_Exception_Pragma
(
8007 Arg_Internal
=> Internal
,
8008 Arg_External
=> External
,
8012 if not Is_VMS_Exception
(Entity
(Internal
)) then
8013 Set_Imported
(Entity
(Internal
));
8015 end Import_Exception
;
8017 ---------------------
8018 -- Import_Function --
8019 ---------------------
8021 -- pragma Import_Function (
8022 -- [Internal =>] LOCAL_NAME,
8023 -- [, [External =>] EXTERNAL_SYMBOL]
8024 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
8025 -- [, [Result_Type =>] SUBTYPE_MARK]
8026 -- [, [Mechanism =>] MECHANISM]
8027 -- [, [Result_Mechanism =>] MECHANISM_NAME]
8028 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
8030 -- EXTERNAL_SYMBOL ::=
8032 -- | static_string_EXPRESSION
8034 -- PARAMETER_TYPES ::=
8036 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
8038 -- TYPE_DESIGNATOR ::=
8040 -- | subtype_Name ' Access
8044 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
8046 -- MECHANISM_ASSOCIATION ::=
8047 -- [formal_parameter_NAME =>] MECHANISM_NAME
8049 -- MECHANISM_NAME ::=
8052 -- | Descriptor [([Class =>] CLASS_NAME)]
8054 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
8056 when Pragma_Import_Function
=> Import_Function
: declare
8057 Args
: Args_List
(1 .. 7);
8058 Names
: constant Name_List
(1 .. 7) := (
8061 Name_Parameter_Types
,
8064 Name_Result_Mechanism
,
8065 Name_First_Optional_Parameter
);
8067 Internal
: Node_Id
renames Args
(1);
8068 External
: Node_Id
renames Args
(2);
8069 Parameter_Types
: Node_Id
renames Args
(3);
8070 Result_Type
: Node_Id
renames Args
(4);
8071 Mechanism
: Node_Id
renames Args
(5);
8072 Result_Mechanism
: Node_Id
renames Args
(6);
8073 First_Optional_Parameter
: Node_Id
renames Args
(7);
8077 Gather_Associations
(Names
, Args
);
8078 Process_Extended_Import_Export_Subprogram_Pragma
(
8079 Arg_Internal
=> Internal
,
8080 Arg_External
=> External
,
8081 Arg_Parameter_Types
=> Parameter_Types
,
8082 Arg_Result_Type
=> Result_Type
,
8083 Arg_Mechanism
=> Mechanism
,
8084 Arg_Result_Mechanism
=> Result_Mechanism
,
8085 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
8086 end Import_Function
;
8092 -- pragma Import_Object (
8093 -- [Internal =>] LOCAL_NAME
8094 -- [, [External =>] EXTERNAL_SYMBOL]
8095 -- [, [Size =>] EXTERNAL_SYMBOL]);
8097 -- EXTERNAL_SYMBOL ::=
8099 -- | static_string_EXPRESSION
8101 when Pragma_Import_Object
=> Import_Object
: declare
8102 Args
: Args_List
(1 .. 3);
8103 Names
: constant Name_List
(1 .. 3) := (
8108 Internal
: Node_Id
renames Args
(1);
8109 External
: Node_Id
renames Args
(2);
8110 Size
: Node_Id
renames Args
(3);
8114 Gather_Associations
(Names
, Args
);
8115 Process_Extended_Import_Export_Object_Pragma
(
8116 Arg_Internal
=> Internal
,
8117 Arg_External
=> External
,
8121 ----------------------
8122 -- Import_Procedure --
8123 ----------------------
8125 -- pragma Import_Procedure (
8126 -- [Internal =>] LOCAL_NAME
8127 -- [, [External =>] EXTERNAL_SYMBOL]
8128 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
8129 -- [, [Mechanism =>] MECHANISM]
8130 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
8132 -- EXTERNAL_SYMBOL ::=
8134 -- | static_string_EXPRESSION
8136 -- PARAMETER_TYPES ::=
8138 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
8140 -- TYPE_DESIGNATOR ::=
8142 -- | subtype_Name ' Access
8146 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
8148 -- MECHANISM_ASSOCIATION ::=
8149 -- [formal_parameter_NAME =>] MECHANISM_NAME
8151 -- MECHANISM_NAME ::=
8154 -- | Descriptor [([Class =>] CLASS_NAME)]
8156 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
8158 when Pragma_Import_Procedure
=> Import_Procedure
: declare
8159 Args
: Args_List
(1 .. 5);
8160 Names
: constant Name_List
(1 .. 5) := (
8163 Name_Parameter_Types
,
8165 Name_First_Optional_Parameter
);
8167 Internal
: Node_Id
renames Args
(1);
8168 External
: Node_Id
renames Args
(2);
8169 Parameter_Types
: Node_Id
renames Args
(3);
8170 Mechanism
: Node_Id
renames Args
(4);
8171 First_Optional_Parameter
: Node_Id
renames Args
(5);
8175 Gather_Associations
(Names
, Args
);
8176 Process_Extended_Import_Export_Subprogram_Pragma
(
8177 Arg_Internal
=> Internal
,
8178 Arg_External
=> External
,
8179 Arg_Parameter_Types
=> Parameter_Types
,
8180 Arg_Mechanism
=> Mechanism
,
8181 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
8182 end Import_Procedure
;
8184 -----------------------------
8185 -- Import_Valued_Procedure --
8186 -----------------------------
8188 -- pragma Import_Valued_Procedure (
8189 -- [Internal =>] LOCAL_NAME
8190 -- [, [External =>] EXTERNAL_SYMBOL]
8191 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
8192 -- [, [Mechanism =>] MECHANISM]
8193 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
8195 -- EXTERNAL_SYMBOL ::=
8197 -- | static_string_EXPRESSION
8199 -- PARAMETER_TYPES ::=
8201 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
8203 -- TYPE_DESIGNATOR ::=
8205 -- | subtype_Name ' Access
8209 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
8211 -- MECHANISM_ASSOCIATION ::=
8212 -- [formal_parameter_NAME =>] MECHANISM_NAME
8214 -- MECHANISM_NAME ::=
8217 -- | Descriptor [([Class =>] CLASS_NAME)]
8219 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
8221 when Pragma_Import_Valued_Procedure
=>
8222 Import_Valued_Procedure
: declare
8223 Args
: Args_List
(1 .. 5);
8224 Names
: constant Name_List
(1 .. 5) := (
8227 Name_Parameter_Types
,
8229 Name_First_Optional_Parameter
);
8231 Internal
: Node_Id
renames Args
(1);
8232 External
: Node_Id
renames Args
(2);
8233 Parameter_Types
: Node_Id
renames Args
(3);
8234 Mechanism
: Node_Id
renames Args
(4);
8235 First_Optional_Parameter
: Node_Id
renames Args
(5);
8239 Gather_Associations
(Names
, Args
);
8240 Process_Extended_Import_Export_Subprogram_Pragma
(
8241 Arg_Internal
=> Internal
,
8242 Arg_External
=> External
,
8243 Arg_Parameter_Types
=> Parameter_Types
,
8244 Arg_Mechanism
=> Mechanism
,
8245 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
8246 end Import_Valued_Procedure
;
8248 ------------------------
8249 -- Initialize_Scalars --
8250 ------------------------
8252 -- pragma Initialize_Scalars;
8254 when Pragma_Initialize_Scalars
=>
8256 Check_Arg_Count
(0);
8257 Check_Valid_Configuration_Pragma
;
8258 Check_Restriction
(No_Initialize_Scalars
, N
);
8260 -- Initialize_Scalars creates false positives in CodePeer,
8261 -- so ignore this pragma in this mode.
8263 if not Restriction_Active
(No_Initialize_Scalars
)
8264 and then not CodePeer_Mode
8266 Init_Or_Norm_Scalars
:= True;
8267 Initialize_Scalars
:= True;
8274 -- pragma Inline ( NAME {, NAME} );
8276 when Pragma_Inline
=>
8278 -- Pragma is active if inlining option is active
8280 Process_Inline
(Inline_Active
);
8286 -- pragma Inline_Always ( NAME {, NAME} );
8288 when Pragma_Inline_Always
=>
8291 -- Pragma always active unless in CodePeer mode, since this causes
8292 -- walk order issues.
8294 if not CodePeer_Mode
then
8295 Process_Inline
(True);
8298 --------------------
8299 -- Inline_Generic --
8300 --------------------
8302 -- pragma Inline_Generic (NAME {, NAME});
8304 when Pragma_Inline_Generic
=>
8306 Process_Generic_List
;
8308 ----------------------
8309 -- Inspection_Point --
8310 ----------------------
8312 -- pragma Inspection_Point [(object_NAME {, object_NAME})];
8314 when Pragma_Inspection_Point
=> Inspection_Point
: declare
8319 if Arg_Count
> 0 then
8322 Exp
:= Expression
(Arg
);
8325 if not Is_Entity_Name
(Exp
)
8326 or else not Is_Object
(Entity
(Exp
))
8328 Error_Pragma_Arg
("object name required", Arg
);
8335 end Inspection_Point
;
8341 -- pragma Interface (
8342 -- [ Convention =>] convention_IDENTIFIER,
8343 -- [ Entity =>] local_NAME
8344 -- [, [External_Name =>] static_string_EXPRESSION ]
8345 -- [, [Link_Name =>] static_string_EXPRESSION ]);
8347 when Pragma_Interface
=>
8354 Check_At_Least_N_Arguments
(2);
8355 Check_At_Most_N_Arguments
(4);
8356 Process_Import_Or_Interface
;
8358 -- In Ada 2005, the permission to use Interface (a reserved word)
8359 -- as a pragma name is considered an obsolescent feature.
8361 if Ada_Version
>= Ada_2005
then
8363 (No_Obsolescent_Features
, Pragma_Identifier
(N
));
8366 --------------------
8367 -- Interface_Name --
8368 --------------------
8370 -- pragma Interface_Name (
8371 -- [ Entity =>] local_NAME
8372 -- [,[External_Name =>] static_string_EXPRESSION ]
8373 -- [,[Link_Name =>] static_string_EXPRESSION ]);
8375 when Pragma_Interface_Name
=> Interface_Name
: declare
8384 ((Name_Entity
, Name_External_Name
, Name_Link_Name
));
8385 Check_At_Least_N_Arguments
(2);
8386 Check_At_Most_N_Arguments
(3);
8387 Id
:= Expression
(Arg1
);
8390 if not Is_Entity_Name
(Id
) then
8392 ("first argument for pragma% must be entity name", Arg1
);
8393 elsif Etype
(Id
) = Any_Type
then
8396 Def_Id
:= Entity
(Id
);
8399 -- Special DEC-compatible processing for the object case, forces
8400 -- object to be imported.
8402 if Ekind
(Def_Id
) = E_Variable
then
8403 Kill_Size_Check_Code
(Def_Id
);
8404 Note_Possible_Modification
(Id
, Sure
=> False);
8406 -- Initialization is not allowed for imported variable
8408 if Present
(Expression
(Parent
(Def_Id
)))
8409 and then Comes_From_Source
(Expression
(Parent
(Def_Id
)))
8411 Error_Msg_Sloc
:= Sloc
(Def_Id
);
8413 ("no initialization allowed for declaration of& #",
8417 -- For compatibility, support VADS usage of providing both
8418 -- pragmas Interface and Interface_Name to obtain the effect
8419 -- of a single Import pragma.
8421 if Is_Imported
(Def_Id
)
8422 and then Present
(First_Rep_Item
(Def_Id
))
8423 and then Nkind
(First_Rep_Item
(Def_Id
)) = N_Pragma
8425 Pragma_Name
(First_Rep_Item
(Def_Id
)) = Name_Interface
8429 Set_Imported
(Def_Id
);
8432 Set_Is_Public
(Def_Id
);
8433 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
8436 -- Otherwise must be subprogram
8438 elsif not Is_Subprogram
(Def_Id
) then
8440 ("argument of pragma% is not subprogram", Arg1
);
8443 Check_At_Most_N_Arguments
(3);
8447 -- Loop through homonyms
8450 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
8452 if Is_Imported
(Def_Id
) then
8453 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
8457 Hom_Id
:= Homonym
(Hom_Id
);
8459 exit when No
(Hom_Id
)
8460 or else Scope
(Hom_Id
) /= Current_Scope
;
8465 ("argument of pragma% is not imported subprogram",
8471 -----------------------
8472 -- Interrupt_Handler --
8473 -----------------------
8475 -- pragma Interrupt_Handler (handler_NAME);
8477 when Pragma_Interrupt_Handler
=>
8478 Check_Ada_83_Warning
;
8479 Check_Arg_Count
(1);
8480 Check_No_Identifiers
;
8482 if No_Run_Time_Mode
then
8483 Error_Msg_CRT
("Interrupt_Handler pragma", N
);
8485 Check_Interrupt_Or_Attach_Handler
;
8486 Process_Interrupt_Or_Attach_Handler
;
8489 ------------------------
8490 -- Interrupt_Priority --
8491 ------------------------
8493 -- pragma Interrupt_Priority [(EXPRESSION)];
8495 when Pragma_Interrupt_Priority
=> Interrupt_Priority
: declare
8496 P
: constant Node_Id
:= Parent
(N
);
8500 Check_Ada_83_Warning
;
8502 if Arg_Count
/= 0 then
8503 Arg
:= Expression
(Arg1
);
8504 Check_Arg_Count
(1);
8505 Check_No_Identifiers
;
8507 -- The expression must be analyzed in the special manner
8508 -- described in "Handling of Default and Per-Object
8509 -- Expressions" in sem.ads.
8511 Preanalyze_Spec_Expression
(Arg
, RTE
(RE_Interrupt_Priority
));
8514 if not Nkind_In
(P
, N_Task_Definition
, N_Protected_Definition
) then
8518 elsif Has_Priority_Pragma
(P
) then
8519 Error_Pragma
("duplicate pragma% not allowed");
8522 Set_Has_Priority_Pragma
(P
, True);
8523 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
8525 end Interrupt_Priority
;
8527 ---------------------
8528 -- Interrupt_State --
8529 ---------------------
8531 -- pragma Interrupt_State (
8532 -- [Name =>] INTERRUPT_ID,
8533 -- [State =>] INTERRUPT_STATE);
8535 -- INTERRUPT_ID => IDENTIFIER | static_integer_EXPRESSION
8536 -- INTERRUPT_STATE => System | Runtime | User
8538 -- Note: if the interrupt id is given as an identifier, then it must
8539 -- be one of the identifiers in Ada.Interrupts.Names. Otherwise it is
8540 -- given as a static integer expression which must be in the range of
8541 -- Ada.Interrupts.Interrupt_ID.
8543 when Pragma_Interrupt_State
=> Interrupt_State
: declare
8545 Int_Id
: constant Entity_Id
:= RTE
(RE_Interrupt_ID
);
8546 -- This is the entity Ada.Interrupts.Interrupt_ID;
8548 State_Type
: Character;
8549 -- Set to 's'/'r'/'u' for System/Runtime/User
8552 -- Index to entry in Interrupt_States table
8555 -- Value of interrupt
8557 Arg1X
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
8558 -- The first argument to the pragma
8560 Int_Ent
: Entity_Id
;
8561 -- Interrupt entity in Ada.Interrupts.Names
8565 Check_Arg_Order
((Name_Name
, Name_State
));
8566 Check_Arg_Count
(2);
8568 Check_Optional_Identifier
(Arg1
, Name_Name
);
8569 Check_Optional_Identifier
(Arg2
, Name_State
);
8570 Check_Arg_Is_Identifier
(Arg2
);
8572 -- First argument is identifier
8574 if Nkind
(Arg1X
) = N_Identifier
then
8576 -- Search list of names in Ada.Interrupts.Names
8578 Int_Ent
:= First_Entity
(RTE
(RE_Names
));
8580 if No
(Int_Ent
) then
8581 Error_Pragma_Arg
("invalid interrupt name", Arg1
);
8583 elsif Chars
(Int_Ent
) = Chars
(Arg1X
) then
8584 Int_Val
:= Expr_Value
(Constant_Value
(Int_Ent
));
8588 Next_Entity
(Int_Ent
);
8591 -- First argument is not an identifier, so it must be a static
8592 -- expression of type Ada.Interrupts.Interrupt_ID.
8595 Check_Arg_Is_Static_Expression
(Arg1
, Any_Integer
);
8596 Int_Val
:= Expr_Value
(Arg1X
);
8598 if Int_Val
< Expr_Value
(Type_Low_Bound
(Int_Id
))
8600 Int_Val
> Expr_Value
(Type_High_Bound
(Int_Id
))
8603 ("value not in range of type " &
8604 """Ada.Interrupts.Interrupt_'I'D""", Arg1
);
8610 case Chars
(Get_Pragma_Arg
(Arg2
)) is
8611 when Name_Runtime
=> State_Type
:= 'r';
8612 when Name_System
=> State_Type
:= 's';
8613 when Name_User
=> State_Type
:= 'u';
8616 Error_Pragma_Arg
("invalid interrupt state", Arg2
);
8619 -- Check if entry is already stored
8621 IST_Num
:= Interrupt_States
.First
;
8623 -- If entry not found, add it
8625 if IST_Num
> Interrupt_States
.Last
then
8626 Interrupt_States
.Append
8627 ((Interrupt_Number
=> UI_To_Int
(Int_Val
),
8628 Interrupt_State
=> State_Type
,
8629 Pragma_Loc
=> Loc
));
8632 -- Case of entry for the same entry
8634 elsif Int_Val
= Interrupt_States
.Table
(IST_Num
).
8637 -- If state matches, done, no need to make redundant entry
8640 State_Type
= Interrupt_States
.Table
(IST_Num
).
8643 -- Otherwise if state does not match, error
8646 Interrupt_States
.Table
(IST_Num
).Pragma_Loc
;
8648 ("state conflicts with that given #", Arg2
);
8652 IST_Num
:= IST_Num
+ 1;
8654 end Interrupt_State
;
8656 ----------------------
8657 -- Java_Constructor --
8658 ----------------------
8660 -- pragma Java_Constructor ([Entity =>] LOCAL_NAME);
8662 -- Also handles pragma CIL_Constructor
8664 when Pragma_CIL_Constructor | Pragma_Java_Constructor
=>
8665 Java_Constructor
: declare
8669 Convention
: Convention_Id
;
8673 Check_Arg_Count
(1);
8674 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8675 Check_Arg_Is_Local_Name
(Arg1
);
8677 Id
:= Expression
(Arg1
);
8678 Find_Program_Unit_Name
(Id
);
8680 -- If we did not find the name, we are done
8682 if Etype
(Id
) = Any_Type
then
8687 when Pragma_CIL_Constructor
=> Convention
:= Convention_CIL
;
8688 when Pragma_Java_Constructor
=> Convention
:= Convention_Java
;
8689 when others => null;
8692 Hom_Id
:= Entity
(Id
);
8694 -- Loop through homonyms
8697 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
8699 -- The constructor is required to be a function returning an
8700 -- access type whose designated type has convention Java/CIL.
8702 if Ekind
(Def_Id
) = E_Function
8704 (Is_Value_Type
(Etype
(Def_Id
))
8706 (Ekind
(Etype
(Def_Id
)) = E_Access_Subprogram_Type
8708 Atree
.Convention
(Etype
(Def_Id
)) = Convention
)
8710 (Ekind
(Etype
(Def_Id
)) in Access_Kind
8713 (Designated_Type
(Etype
(Def_Id
))) = Convention
8716 (Root_Type
(Designated_Type
(Etype
(Def_Id
)))) =
8719 Set_Is_Constructor
(Def_Id
);
8720 Set_Convention
(Def_Id
, Convention
);
8721 Set_Is_Imported
(Def_Id
);
8724 if Convention
= Convention_Java
then
8726 ("pragma% requires function returning a " &
8727 "'Java access type", Arg1
);
8729 pragma Assert
(Convention
= Convention_CIL
);
8731 ("pragma% requires function returning a " &
8732 "'C'I'L access type", Arg1
);
8736 Hom_Id
:= Homonym
(Hom_Id
);
8738 exit when No
(Hom_Id
) or else Scope
(Hom_Id
) /= Current_Scope
;
8740 end Java_Constructor
;
8742 ----------------------
8743 -- Java_Interface --
8744 ----------------------
8746 -- pragma Java_Interface ([Entity =>] LOCAL_NAME);
8748 when Pragma_Java_Interface
=> Java_Interface
: declare
8754 Check_Arg_Count
(1);
8755 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8756 Check_Arg_Is_Local_Name
(Arg1
);
8758 Arg
:= Expression
(Arg1
);
8761 if Etype
(Arg
) = Any_Type
then
8765 if not Is_Entity_Name
(Arg
)
8766 or else not Is_Type
(Entity
(Arg
))
8768 Error_Pragma_Arg
("pragma% requires a type mark", Arg1
);
8771 Typ
:= Underlying_Type
(Entity
(Arg
));
8773 -- For now simply check some of the semantic constraints on the
8774 -- type. This currently leaves out some restrictions on interface
8775 -- types, namely that the parent type must be java.lang.Object.Typ
8776 -- and that all primitives of the type should be declared
8779 if not Is_Tagged_Type
(Typ
) or else not Is_Abstract_Type
(Typ
) then
8780 Error_Pragma_Arg
("pragma% requires an abstract "
8781 & "tagged type", Arg1
);
8783 elsif not Has_Discriminants
(Typ
)
8784 or else Ekind
(Etype
(First_Discriminant
(Typ
)))
8785 /= E_Anonymous_Access_Type
8787 not Is_Class_Wide_Type
8788 (Designated_Type
(Etype
(First_Discriminant
(Typ
))))
8791 ("type must have a class-wide access discriminant", Arg1
);
8799 -- pragma Keep_Names ([On => ] local_NAME);
8801 when Pragma_Keep_Names
=> Keep_Names
: declare
8806 Check_Arg_Count
(1);
8807 Check_Optional_Identifier
(Arg1
, Name_On
);
8808 Check_Arg_Is_Local_Name
(Arg1
);
8810 Arg
:= Expression
(Arg1
);
8813 if Etype
(Arg
) = Any_Type
then
8817 if not Is_Entity_Name
(Arg
)
8818 or else Ekind
(Entity
(Arg
)) /= E_Enumeration_Type
8821 ("pragma% requires a local enumeration type", Arg1
);
8824 Set_Discard_Names
(Entity
(Arg
), False);
8831 -- pragma License (RESTRICTED | UNRESTRICTED | GPL | MODIFIED_GPL);
8833 when Pragma_License
=>
8835 Check_Arg_Count
(1);
8836 Check_No_Identifiers
;
8837 Check_Valid_Configuration_Pragma
;
8838 Check_Arg_Is_Identifier
(Arg1
);
8841 Sind
: constant Source_File_Index
:=
8842 Source_Index
(Current_Sem_Unit
);
8845 case Chars
(Get_Pragma_Arg
(Arg1
)) is
8847 Set_License
(Sind
, GPL
);
8849 when Name_Modified_GPL
=>
8850 Set_License
(Sind
, Modified_GPL
);
8852 when Name_Restricted
=>
8853 Set_License
(Sind
, Restricted
);
8855 when Name_Unrestricted
=>
8856 Set_License
(Sind
, Unrestricted
);
8859 Error_Pragma_Arg
("invalid license name", Arg1
);
8867 -- pragma Link_With (string_EXPRESSION {, string_EXPRESSION});
8869 when Pragma_Link_With
=> Link_With
: declare
8875 if Operating_Mode
= Generate_Code
8876 and then In_Extended_Main_Source_Unit
(N
)
8878 Check_At_Least_N_Arguments
(1);
8879 Check_No_Identifiers
;
8880 Check_Is_In_Decl_Part_Or_Package_Spec
;
8881 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
8885 while Present
(Arg
) loop
8886 Check_Arg_Is_Static_Expression
(Arg
, Standard_String
);
8888 -- Store argument, converting sequences of spaces to a
8889 -- single null character (this is one of the differences
8890 -- in processing between Link_With and Linker_Options).
8893 C
: constant Char_Code
:= Get_Char_Code
(' ');
8894 S
: constant String_Id
:=
8895 Strval
(Expr_Value_S
(Expression
(Arg
)));
8896 L
: constant Nat
:= String_Length
(S
);
8899 procedure Skip_Spaces
;
8900 -- Advance F past any spaces
8906 procedure Skip_Spaces
is
8908 while F
<= L
and then Get_String_Char
(S
, F
) = C
loop
8913 -- Start of processing for Arg_Store
8916 Skip_Spaces
; -- skip leading spaces
8918 -- Loop through characters, changing any embedded
8919 -- sequence of spaces to a single null character (this
8920 -- is how Link_With/Linker_Options differ)
8923 if Get_String_Char
(S
, F
) = C
then
8926 Store_String_Char
(ASCII
.NUL
);
8929 Store_String_Char
(Get_String_Char
(S
, F
));
8937 if Present
(Arg
) then
8938 Store_String_Char
(ASCII
.NUL
);
8942 Store_Linker_Option_String
(End_String
);
8950 -- pragma Linker_Alias (
8951 -- [Entity =>] LOCAL_NAME
8952 -- [Target =>] static_string_EXPRESSION);
8954 when Pragma_Linker_Alias
=>
8956 Check_Arg_Order
((Name_Entity
, Name_Target
));
8957 Check_Arg_Count
(2);
8958 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8959 Check_Optional_Identifier
(Arg2
, Name_Target
);
8960 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
8961 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
8963 -- The only processing required is to link this item on to the
8964 -- list of rep items for the given entity. This is accomplished
8965 -- by the call to Rep_Item_Too_Late (when no error is detected
8966 -- and False is returned).
8968 if Rep_Item_Too_Late
(Entity
(Expression
(Arg1
)), N
) then
8971 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
8974 ------------------------
8975 -- Linker_Constructor --
8976 ------------------------
8978 -- pragma Linker_Constructor (procedure_LOCAL_NAME);
8980 -- Code is shared with Linker_Destructor
8982 -----------------------
8983 -- Linker_Destructor --
8984 -----------------------
8986 -- pragma Linker_Destructor (procedure_LOCAL_NAME);
8988 when Pragma_Linker_Constructor |
8989 Pragma_Linker_Destructor
=>
8990 Linker_Constructor
: declare
8996 Check_Arg_Count
(1);
8997 Check_No_Identifiers
;
8998 Check_Arg_Is_Local_Name
(Arg1
);
8999 Arg1_X
:= Expression
(Arg1
);
9001 Proc
:= Find_Unique_Parameterless_Procedure
(Arg1_X
, Arg1
);
9003 if not Is_Library_Level_Entity
(Proc
) then
9005 ("argument for pragma% must be library level entity", Arg1
);
9008 -- The only processing required is to link this item on to the
9009 -- list of rep items for the given entity. This is accomplished
9010 -- by the call to Rep_Item_Too_Late (when no error is detected
9011 -- and False is returned).
9013 if Rep_Item_Too_Late
(Proc
, N
) then
9016 Set_Has_Gigi_Rep_Item
(Proc
);
9018 end Linker_Constructor
;
9020 --------------------
9021 -- Linker_Options --
9022 --------------------
9024 -- pragma Linker_Options (string_EXPRESSION {, string_EXPRESSION});
9026 when Pragma_Linker_Options
=> Linker_Options
: declare
9030 Check_Ada_83_Warning
;
9031 Check_No_Identifiers
;
9032 Check_Arg_Count
(1);
9033 Check_Is_In_Decl_Part_Or_Package_Spec
;
9034 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
9035 Start_String
(Strval
(Expr_Value_S
(Expression
(Arg1
))));
9038 while Present
(Arg
) loop
9039 Check_Arg_Is_Static_Expression
(Arg
, Standard_String
);
9040 Store_String_Char
(ASCII
.NUL
);
9041 Store_String_Chars
(Strval
(Expr_Value_S
(Expression
(Arg
))));
9045 if Operating_Mode
= Generate_Code
9046 and then In_Extended_Main_Source_Unit
(N
)
9048 Store_Linker_Option_String
(End_String
);
9052 --------------------
9053 -- Linker_Section --
9054 --------------------
9056 -- pragma Linker_Section (
9057 -- [Entity =>] LOCAL_NAME
9058 -- [Section =>] static_string_EXPRESSION);
9060 when Pragma_Linker_Section
=>
9062 Check_Arg_Order
((Name_Entity
, Name_Section
));
9063 Check_Arg_Count
(2);
9064 Check_Optional_Identifier
(Arg1
, Name_Entity
);
9065 Check_Optional_Identifier
(Arg2
, Name_Section
);
9066 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
9067 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
9069 -- This pragma applies only to objects
9071 if not Is_Object
(Entity
(Expression
(Arg1
))) then
9072 Error_Pragma_Arg
("pragma% applies only to objects", Arg1
);
9075 -- The only processing required is to link this item on to the
9076 -- list of rep items for the given entity. This is accomplished
9077 -- by the call to Rep_Item_Too_Late (when no error is detected
9078 -- and False is returned).
9080 if Rep_Item_Too_Late
(Entity
(Expression
(Arg1
)), N
) then
9083 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
9090 -- pragma List (On | Off)
9092 -- There is nothing to do here, since we did all the processing for
9093 -- this pragma in Par.Prag (so that it works properly even in syntax
9099 --------------------
9100 -- Locking_Policy --
9101 --------------------
9103 -- pragma Locking_Policy (policy_IDENTIFIER);
9105 when Pragma_Locking_Policy
=> declare
9109 Check_Ada_83_Warning
;
9110 Check_Arg_Count
(1);
9111 Check_No_Identifiers
;
9112 Check_Arg_Is_Locking_Policy
(Arg1
);
9113 Check_Valid_Configuration_Pragma
;
9114 Get_Name_String
(Chars
(Expression
(Arg1
)));
9115 LP
:= Fold_Upper
(Name_Buffer
(1));
9117 if Locking_Policy
/= ' '
9118 and then Locking_Policy
/= LP
9120 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
9121 Error_Pragma
("locking policy incompatible with policy#");
9123 -- Set new policy, but always preserve System_Location since we
9124 -- like the error message with the run time name.
9127 Locking_Policy
:= LP
;
9129 if Locking_Policy_Sloc
/= System_Location
then
9130 Locking_Policy_Sloc
:= Loc
;
9139 -- pragma Long_Float (D_Float | G_Float);
9141 when Pragma_Long_Float
=>
9143 Check_Valid_Configuration_Pragma
;
9144 Check_Arg_Count
(1);
9145 Check_No_Identifier
(Arg1
);
9146 Check_Arg_Is_One_Of
(Arg1
, Name_D_Float
, Name_G_Float
);
9148 if not OpenVMS_On_Target
then
9149 Error_Pragma
("?pragma% ignored (applies only to Open'V'M'S)");
9154 if Chars
(Expression
(Arg1
)) = Name_D_Float
then
9155 if Opt
.Float_Format_Long
= 'G' then
9156 Error_Pragma
("G_Float previously specified");
9159 Opt
.Float_Format_Long
:= 'D';
9161 -- G_Float case (this is the default, does not need overriding)
9164 if Opt
.Float_Format_Long
= 'D' then
9165 Error_Pragma
("D_Float previously specified");
9168 Opt
.Float_Format_Long
:= 'G';
9171 Set_Standard_Fpt_Formats
;
9173 -----------------------
9174 -- Machine_Attribute --
9175 -----------------------
9177 -- pragma Machine_Attribute (
9178 -- [Entity =>] LOCAL_NAME,
9179 -- [Attribute_Name =>] static_string_EXPRESSION
9180 -- [, [Info =>] static_EXPRESSION] );
9182 when Pragma_Machine_Attribute
=> Machine_Attribute
: declare
9187 Check_Arg_Order
((Name_Entity
, Name_Attribute_Name
, Name_Info
));
9189 if Arg_Count
= 3 then
9190 Check_Optional_Identifier
(Arg3
, Name_Info
);
9191 Check_Arg_Is_Static_Expression
(Arg3
);
9193 Check_Arg_Count
(2);
9196 Check_Optional_Identifier
(Arg1
, Name_Entity
);
9197 Check_Optional_Identifier
(Arg2
, Name_Attribute_Name
);
9198 Check_Arg_Is_Local_Name
(Arg1
);
9199 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
9200 Def_Id
:= Entity
(Expression
(Arg1
));
9202 if Is_Access_Type
(Def_Id
) then
9203 Def_Id
:= Designated_Type
(Def_Id
);
9206 if Rep_Item_Too_Early
(Def_Id
, N
) then
9210 Def_Id
:= Underlying_Type
(Def_Id
);
9212 -- The only processing required is to link this item on to the
9213 -- list of rep items for the given entity. This is accomplished
9214 -- by the call to Rep_Item_Too_Late (when no error is detected
9215 -- and False is returned).
9217 if Rep_Item_Too_Late
(Def_Id
, N
) then
9220 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
9222 end Machine_Attribute
;
9229 -- (MAIN_OPTION [, MAIN_OPTION]);
9232 -- [STACK_SIZE =>] static_integer_EXPRESSION
9233 -- | [TASK_STACK_SIZE_DEFAULT =>] static_integer_EXPRESSION
9234 -- | [TIME_SLICING_ENABLED =>] static_boolean_EXPRESSION
9236 when Pragma_Main
=> Main
: declare
9237 Args
: Args_List
(1 .. 3);
9238 Names
: constant Name_List
(1 .. 3) := (
9240 Name_Task_Stack_Size_Default
,
9241 Name_Time_Slicing_Enabled
);
9247 Gather_Associations
(Names
, Args
);
9249 for J
in 1 .. 2 loop
9250 if Present
(Args
(J
)) then
9251 Check_Arg_Is_Static_Expression
(Args
(J
), Any_Integer
);
9255 if Present
(Args
(3)) then
9256 Check_Arg_Is_Static_Expression
(Args
(3), Standard_Boolean
);
9260 while Present
(Nod
) loop
9261 if Nkind
(Nod
) = N_Pragma
9262 and then Pragma_Name
(Nod
) = Name_Main
9264 Error_Msg_Name_1
:= Pname
;
9265 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
9276 -- pragma Main_Storage
9277 -- (MAIN_STORAGE_OPTION [, MAIN_STORAGE_OPTION]);
9279 -- MAIN_STORAGE_OPTION ::=
9280 -- [WORKING_STORAGE =>] static_SIMPLE_EXPRESSION
9281 -- | [TOP_GUARD =>] static_SIMPLE_EXPRESSION
9283 when Pragma_Main_Storage
=> Main_Storage
: declare
9284 Args
: Args_List
(1 .. 2);
9285 Names
: constant Name_List
(1 .. 2) := (
9286 Name_Working_Storage
,
9293 Gather_Associations
(Names
, Args
);
9295 for J
in 1 .. 2 loop
9296 if Present
(Args
(J
)) then
9297 Check_Arg_Is_Static_Expression
(Args
(J
), Any_Integer
);
9301 Check_In_Main_Program
;
9304 while Present
(Nod
) loop
9305 if Nkind
(Nod
) = N_Pragma
9306 and then Pragma_Name
(Nod
) = Name_Main_Storage
9308 Error_Msg_Name_1
:= Pname
;
9309 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
9320 -- pragma Memory_Size (NUMERIC_LITERAL)
9322 when Pragma_Memory_Size
=>
9325 -- Memory size is simply ignored
9327 Check_No_Identifiers
;
9328 Check_Arg_Count
(1);
9329 Check_Arg_Is_Integer_Literal
(Arg1
);
9337 -- The only correct use of this pragma is on its own in a file, in
9338 -- which case it is specially processed (see Gnat1drv.Check_Bad_Body
9339 -- and Frontend, which use Sinput.L.Source_File_Is_Pragma_No_Body to
9340 -- check for a file containing nothing but a No_Body pragma). If we
9341 -- attempt to process it during normal semantics processing, it means
9342 -- it was misplaced.
9344 when Pragma_No_Body
=>
9352 -- pragma No_Return (procedure_LOCAL_NAME {, procedure_Local_Name});
9354 when Pragma_No_Return
=> No_Return
: declare
9362 Check_At_Least_N_Arguments
(1);
9364 -- Loop through arguments of pragma
9367 while Present
(Arg
) loop
9368 Check_Arg_Is_Local_Name
(Arg
);
9369 Id
:= Expression
(Arg
);
9372 if not Is_Entity_Name
(Id
) then
9373 Error_Pragma_Arg
("entity name required", Arg
);
9376 if Etype
(Id
) = Any_Type
then
9380 -- Loop to find matching procedures
9385 and then Scope
(E
) = Current_Scope
9387 if Ekind_In
(E
, E_Procedure
, E_Generic_Procedure
) then
9390 -- Set flag on any alias as well
9392 if Is_Overloadable
(E
) and then Present
(Alias
(E
)) then
9393 Set_No_Return
(Alias
(E
));
9403 Error_Pragma_Arg
("no procedure & found for pragma%", Arg
);
9414 -- pragma No_Run_Time;
9416 -- Note: this pragma is retained for backwards compatibility. See
9417 -- body of Rtsfind for full details on its handling.
9419 when Pragma_No_Run_Time
=>
9421 Check_Valid_Configuration_Pragma
;
9422 Check_Arg_Count
(0);
9424 No_Run_Time_Mode
:= True;
9425 Configurable_Run_Time_Mode
:= True;
9427 -- Set Duration to 32 bits if word size is 32
9429 if Ttypes
.System_Word_Size
= 32 then
9430 Duration_32_Bits_On_Target
:= True;
9433 -- Set appropriate restrictions
9435 Set_Restriction
(No_Finalization
, N
);
9436 Set_Restriction
(No_Exception_Handlers
, N
);
9437 Set_Restriction
(Max_Tasks
, N
, 0);
9438 Set_Restriction
(No_Tasking
, N
);
9440 ------------------------
9441 -- No_Strict_Aliasing --
9442 ------------------------
9444 -- pragma No_Strict_Aliasing [([Entity =>] type_LOCAL_NAME)];
9446 when Pragma_No_Strict_Aliasing
=> No_Strict_Aliasing
: declare
9451 Check_At_Most_N_Arguments
(1);
9453 if Arg_Count
= 0 then
9454 Check_Valid_Configuration_Pragma
;
9455 Opt
.No_Strict_Aliasing
:= True;
9458 Check_Optional_Identifier
(Arg2
, Name_Entity
);
9459 Check_Arg_Is_Local_Name
(Arg1
);
9460 E_Id
:= Entity
(Expression
(Arg1
));
9462 if E_Id
= Any_Type
then
9464 elsif No
(E_Id
) or else not Is_Access_Type
(E_Id
) then
9465 Error_Pragma_Arg
("pragma% requires access type", Arg1
);
9468 Set_No_Strict_Aliasing
(Implementation_Base_Type
(E_Id
));
9470 end No_Strict_Aliasing
;
9472 -----------------------
9473 -- Normalize_Scalars --
9474 -----------------------
9476 -- pragma Normalize_Scalars;
9478 when Pragma_Normalize_Scalars
=>
9479 Check_Ada_83_Warning
;
9480 Check_Arg_Count
(0);
9481 Check_Valid_Configuration_Pragma
;
9483 -- Normalize_Scalars creates false positives in CodePeer, so
9484 -- ignore this pragma in this mode.
9486 if not CodePeer_Mode
then
9487 Normalize_Scalars
:= True;
9488 Init_Or_Norm_Scalars
:= True;
9495 -- pragma Obsolescent;
9497 -- pragma Obsolescent (
9498 -- [Message =>] static_string_EXPRESSION
9499 -- [,[Version =>] Ada_05]]);
9501 -- pragma Obsolescent (
9503 -- [,[Message =>] static_string_EXPRESSION
9504 -- [,[Version =>] Ada_05]] );
9506 when Pragma_Obsolescent
=> Obsolescent
: declare
9510 procedure Set_Obsolescent
(E
: Entity_Id
);
9511 -- Given an entity Ent, mark it as obsolescent if appropriate
9513 ---------------------
9514 -- Set_Obsolescent --
9515 ---------------------
9517 procedure Set_Obsolescent
(E
: Entity_Id
) is
9526 -- Entity name was given
9528 if Present
(Ename
) then
9530 -- If entity name matches, we are fine. Save entity in
9531 -- pragma argument, for ASIS use.
9533 if Chars
(Ename
) = Chars
(Ent
) then
9534 Set_Entity
(Ename
, Ent
);
9535 Generate_Reference
(Ent
, Ename
);
9537 -- If entity name does not match, only possibility is an
9538 -- enumeration literal from an enumeration type declaration.
9540 elsif Ekind
(Ent
) /= E_Enumeration_Type
then
9542 ("pragma % entity name does not match declaration");
9545 Ent
:= First_Literal
(E
);
9549 ("pragma % entity name does not match any " &
9550 "enumeration literal");
9552 elsif Chars
(Ent
) = Chars
(Ename
) then
9553 Set_Entity
(Ename
, Ent
);
9554 Generate_Reference
(Ent
, Ename
);
9558 Ent
:= Next_Literal
(Ent
);
9564 -- Ent points to entity to be marked
9566 if Arg_Count
>= 1 then
9568 -- Deal with static string argument
9570 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
9571 S
:= Strval
(Expression
(Arg1
));
9573 for J
in 1 .. String_Length
(S
) loop
9574 if not In_Character_Range
(Get_String_Char
(S
, J
)) then
9576 ("pragma% argument does not allow wide characters",
9581 Obsolescent_Warnings
.Append
9582 ((Ent
=> Ent
, Msg
=> Strval
(Expression
(Arg1
))));
9584 -- Check for Ada_05 parameter
9586 if Arg_Count
/= 1 then
9587 Check_Arg_Count
(2);
9590 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg2
);
9593 Check_Arg_Is_Identifier
(Argx
);
9595 if Chars
(Argx
) /= Name_Ada_05
then
9596 Error_Msg_Name_2
:= Name_Ada_05
;
9598 ("only allowed argument for pragma% is %", Argx
);
9601 if Ada_Version_Explicit
< Ada_05
9602 or else not Warn_On_Ada_2005_Compatibility
9610 -- Set flag if pragma active
9613 Set_Is_Obsolescent
(Ent
);
9617 end Set_Obsolescent
;
9619 -- Start of processing for pragma Obsolescent
9624 Check_At_Most_N_Arguments
(3);
9626 -- See if first argument specifies an entity name
9630 (Chars
(Arg1
) = Name_Entity
9632 Nkind_In
(Get_Pragma_Arg
(Arg1
), N_Character_Literal
,
9636 Ename
:= Get_Pragma_Arg
(Arg1
);
9638 -- Eliminate first argument, so we can share processing
9642 Arg_Count
:= Arg_Count
- 1;
9644 -- No Entity name argument given
9650 if Arg_Count
>= 1 then
9651 Check_Optional_Identifier
(Arg1
, Name_Message
);
9653 if Arg_Count
= 2 then
9654 Check_Optional_Identifier
(Arg2
, Name_Version
);
9658 -- Get immediately preceding declaration
9661 while Present
(Decl
) and then Nkind
(Decl
) = N_Pragma
loop
9665 -- Cases where we do not follow anything other than another pragma
9669 -- First case: library level compilation unit declaration with
9670 -- the pragma immediately following the declaration.
9672 if Nkind
(Parent
(N
)) = N_Compilation_Unit_Aux
then
9674 (Defining_Entity
(Unit
(Parent
(Parent
(N
)))));
9677 -- Case 2: library unit placement for package
9681 Ent
: constant Entity_Id
:= Find_Lib_Unit_Name
;
9683 if Is_Package_Or_Generic_Package
(Ent
) then
9684 Set_Obsolescent
(Ent
);
9690 -- Cases where we must follow a declaration
9693 if Nkind
(Decl
) not in N_Declaration
9694 and then Nkind
(Decl
) not in N_Later_Decl_Item
9695 and then Nkind
(Decl
) not in N_Generic_Declaration
9696 and then Nkind
(Decl
) not in N_Renaming_Declaration
9699 ("pragma% misplaced, "
9700 & "must immediately follow a declaration");
9703 Set_Obsolescent
(Defining_Entity
(Decl
));
9713 -- pragma Optimize (Time | Space | Off);
9715 -- The actual check for optimize is done in Gigi. Note that this
9716 -- pragma does not actually change the optimization setting, it
9717 -- simply checks that it is consistent with the pragma.
9719 when Pragma_Optimize
=>
9720 Check_No_Identifiers
;
9721 Check_Arg_Count
(1);
9722 Check_Arg_Is_One_Of
(Arg1
, Name_Time
, Name_Space
, Name_Off
);
9724 ------------------------
9725 -- Optimize_Alignment --
9726 ------------------------
9728 -- pragma Optimize_Alignment (Time | Space | Off);
9730 when Pragma_Optimize_Alignment
=> Optimize_Alignment
: begin
9732 Check_No_Identifiers
;
9733 Check_Arg_Count
(1);
9734 Check_Valid_Configuration_Pragma
;
9737 Nam
: constant Name_Id
:= Chars
(Get_Pragma_Arg
(Arg1
));
9741 Opt
.Optimize_Alignment
:= 'T';
9743 Opt
.Optimize_Alignment
:= 'S';
9745 Opt
.Optimize_Alignment
:= 'O';
9747 Error_Pragma_Arg
("invalid argument for pragma%", Arg1
);
9751 -- Set indication that mode is set locally. If we are in fact in a
9752 -- configuration pragma file, this setting is harmless since the
9753 -- switch will get reset anyway at the start of each unit.
9755 Optimize_Alignment_Local
:= True;
9756 end Optimize_Alignment
;
9762 -- pragma Ordered (first_enumeration_subtype_LOCAL_NAME);
9764 when Pragma_Ordered
=> Ordered
: declare
9765 Assoc
: constant Node_Id
:= Arg1
;
9771 Check_No_Identifiers
;
9772 Check_Arg_Count
(1);
9773 Check_Arg_Is_Local_Name
(Arg1
);
9775 Type_Id
:= Expression
(Assoc
);
9776 Find_Type
(Type_Id
);
9777 Typ
:= Entity
(Type_Id
);
9779 if Typ
= Any_Type
then
9782 Typ
:= Underlying_Type
(Typ
);
9785 if not Is_Enumeration_Type
(Typ
) then
9786 Error_Pragma
("pragma% must specify enumeration type");
9789 Check_First_Subtype
(Arg1
);
9790 Set_Has_Pragma_Ordered
(Base_Type
(Typ
));
9797 -- pragma Pack (first_subtype_LOCAL_NAME);
9799 when Pragma_Pack
=> Pack
: declare
9800 Assoc
: constant Node_Id
:= Arg1
;
9805 Check_No_Identifiers
;
9806 Check_Arg_Count
(1);
9807 Check_Arg_Is_Local_Name
(Arg1
);
9809 Type_Id
:= Expression
(Assoc
);
9810 Find_Type
(Type_Id
);
9811 Typ
:= Entity
(Type_Id
);
9814 or else Rep_Item_Too_Early
(Typ
, N
)
9818 Typ
:= Underlying_Type
(Typ
);
9821 if not Is_Array_Type
(Typ
) and then not Is_Record_Type
(Typ
) then
9822 Error_Pragma
("pragma% must specify array or record type");
9825 Check_First_Subtype
(Arg1
);
9827 if Has_Pragma_Pack
(Typ
) then
9828 Error_Pragma
("duplicate pragma%, only one allowed");
9832 elsif Is_Array_Type
(Typ
) then
9834 -- Pack not allowed for aliased or atomic components
9836 if Has_Aliased_Components
(Base_Type
(Typ
)) then
9838 ("pragma% ignored, cannot pack aliased components?");
9840 elsif Has_Atomic_Components
(Typ
)
9841 or else Is_Atomic
(Component_Type
(Typ
))
9844 ("?pragma% ignored, cannot pack atomic components");
9847 -- If we had an explicit component size given, then we do not
9848 -- let Pack override this given size. We also give a warning
9849 -- that Pack is being ignored unless we can tell for sure that
9850 -- the Pack would not have had any effect anyway.
9852 if Has_Component_Size_Clause
(Typ
) then
9853 if Known_Static_RM_Size
(Component_Type
(Typ
))
9855 RM_Size
(Component_Type
(Typ
)) = Component_Size
(Typ
)
9860 ("?pragma% ignored, explicit component size given");
9863 -- If no prior array component size given, Pack is effective
9866 if not Rep_Item_Too_Late
(Typ
, N
) then
9868 -- In the context of static code analysis, we do not need
9869 -- complex front-end expansions related to pragma Pack,
9870 -- so disable handling of pragma Pack in this case.
9872 if CodePeer_Mode
then
9875 -- For normal non-VM target, do the packing
9877 elsif VM_Target
= No_VM
then
9878 Set_Is_Packed
(Base_Type
(Typ
));
9879 Set_Has_Pragma_Pack
(Base_Type
(Typ
));
9880 Set_Has_Non_Standard_Rep
(Base_Type
(Typ
));
9882 -- If we ignore the pack, then warn about this, except
9883 -- that we suppress the warning in GNAT mode.
9885 elsif not GNAT_Mode
then
9887 ("?pragma% ignored in this configuration");
9892 -- For record types, the pack is always effective
9894 else pragma Assert
(Is_Record_Type
(Typ
));
9895 if not Rep_Item_Too_Late
(Typ
, N
) then
9896 if VM_Target
= No_VM
then
9897 Set_Is_Packed
(Base_Type
(Typ
));
9898 Set_Has_Pragma_Pack
(Base_Type
(Typ
));
9899 Set_Has_Non_Standard_Rep
(Base_Type
(Typ
));
9901 elsif not GNAT_Mode
then
9902 Error_Pragma
("?pragma% ignored in this configuration");
9914 -- There is nothing to do here, since we did all the processing for
9915 -- this pragma in Par.Prag (so that it works properly even in syntax
9925 -- pragma Passive [(PASSIVE_FORM)];
9927 -- PASSIVE_FORM ::= Semaphore | No
9929 when Pragma_Passive
=>
9932 if Nkind
(Parent
(N
)) /= N_Task_Definition
then
9933 Error_Pragma
("pragma% must be within task definition");
9936 if Arg_Count
/= 0 then
9937 Check_Arg_Count
(1);
9938 Check_Arg_Is_One_Of
(Arg1
, Name_Semaphore
, Name_No
);
9941 ----------------------------------
9942 -- Preelaborable_Initialization --
9943 ----------------------------------
9945 -- pragma Preelaborable_Initialization (DIRECT_NAME);
9947 when Pragma_Preelaborable_Initialization
=> Preelab_Init
: declare
9952 Check_Arg_Count
(1);
9953 Check_No_Identifiers
;
9954 Check_Arg_Is_Identifier
(Arg1
);
9955 Check_Arg_Is_Local_Name
(Arg1
);
9956 Check_First_Subtype
(Arg1
);
9957 Ent
:= Entity
(Expression
(Arg1
));
9959 if not Is_Private_Type
(Ent
)
9960 and then not Is_Protected_Type
(Ent
)
9963 ("pragma % can only be applied to private or protected type",
9967 -- Give an error if the pragma is applied to a protected type that
9968 -- does not qualify (due to having entries, or due to components
9969 -- that do not qualify).
9971 if Is_Protected_Type
(Ent
)
9972 and then not Has_Preelaborable_Initialization
(Ent
)
9975 ("protected type & does not have preelaborable " &
9976 "initialization", Ent
);
9978 -- Otherwise mark the type as definitely having preelaborable
9982 Set_Known_To_Have_Preelab_Init
(Ent
);
9985 if Has_Pragma_Preelab_Init
(Ent
)
9986 and then Warn_On_Redundant_Constructs
9988 Error_Pragma
("?duplicate pragma%!");
9990 Set_Has_Pragma_Preelab_Init
(Ent
);
9994 --------------------
9995 -- Persistent_BSS --
9996 --------------------
9998 when Pragma_Persistent_BSS
=> Persistent_BSS
: declare
10005 Check_At_Most_N_Arguments
(1);
10007 -- Case of application to specific object (one argument)
10009 if Arg_Count
= 1 then
10010 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
10012 if not Is_Entity_Name
(Expression
(Arg1
))
10014 (Ekind
(Entity
(Expression
(Arg1
))) /= E_Variable
10015 and then Ekind
(Entity
(Expression
(Arg1
))) /= E_Constant
)
10017 Error_Pragma_Arg
("pragma% only applies to objects", Arg1
);
10020 Ent
:= Entity
(Expression
(Arg1
));
10021 Decl
:= Parent
(Ent
);
10023 if Rep_Item_Too_Late
(Ent
, N
) then
10027 if Present
(Expression
(Decl
)) then
10029 ("object for pragma% cannot have initialization", Arg1
);
10032 if not Is_Potentially_Persistent_Type
(Etype
(Ent
)) then
10034 ("object type for pragma% is not potentially persistent",
10039 Make_Linker_Section_Pragma
10040 (Ent
, Sloc
(N
), ".persistent.bss");
10041 Insert_After
(N
, Prag
);
10044 -- Case of use as configuration pragma with no arguments
10047 Check_Valid_Configuration_Pragma
;
10048 Persistent_BSS_Mode
:= True;
10050 end Persistent_BSS
;
10056 -- pragma Polling (ON | OFF);
10058 when Pragma_Polling
=>
10060 Check_Arg_Count
(1);
10061 Check_No_Identifiers
;
10062 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
10063 Polling_Required
:= (Chars
(Expression
(Arg1
)) = Name_On
);
10065 -------------------
10066 -- Postcondition --
10067 -------------------
10069 -- pragma Postcondition ([Check =>] Boolean_Expression
10070 -- [,[Message =>] String_Expression]);
10072 when Pragma_Postcondition
=> Postcondition
: declare
10074 pragma Warnings
(Off
, In_Body
);
10078 Check_At_Least_N_Arguments
(1);
10079 Check_At_Most_N_Arguments
(2);
10080 Check_Optional_Identifier
(Arg1
, Name_Check
);
10082 -- All we need to do here is call the common check procedure,
10083 -- the remainder of the processing is found in Sem_Ch6/Sem_Ch7.
10085 Check_Precondition_Postcondition
(In_Body
);
10092 -- pragma Precondition ([Check =>] Boolean_Expression
10093 -- [,[Message =>] String_Expression]);
10095 when Pragma_Precondition
=> Precondition
: declare
10100 Check_At_Least_N_Arguments
(1);
10101 Check_At_Most_N_Arguments
(2);
10102 Check_Optional_Identifier
(Arg1
, Name_Check
);
10104 Check_Precondition_Postcondition
(In_Body
);
10106 -- If in spec, nothing more to do. If in body, then we convert the
10107 -- pragma to pragma Check (Precondition, cond [, msg]). Note we do
10108 -- this whether or not precondition checks are enabled. That works
10109 -- fine since pragma Check will do this check, and will also
10110 -- analyze the condition itself in the proper context.
10113 if Arg_Count
= 2 then
10114 Check_Optional_Identifier
(Arg3
, Name_Message
);
10115 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg2
), Standard_String
);
10120 Chars
=> Name_Check
,
10121 Pragma_Argument_Associations
=> New_List
(
10122 Make_Pragma_Argument_Association
(Loc
,
10124 Make_Identifier
(Loc
,
10125 Chars
=> Name_Precondition
)),
10127 Make_Pragma_Argument_Association
(Sloc
(Arg1
),
10128 Expression
=> Relocate_Node
(Get_Pragma_Arg
(Arg1
))))));
10130 if Arg_Count
= 2 then
10131 Append_To
(Pragma_Argument_Associations
(N
),
10132 Make_Pragma_Argument_Association
(Sloc
(Arg2
),
10133 Expression
=> Relocate_Node
(Get_Pragma_Arg
(Arg2
))));
10144 -- pragma Preelaborate [(library_unit_NAME)];
10146 -- Set the flag Is_Preelaborated of program unit name entity
10148 when Pragma_Preelaborate
=> Preelaborate
: declare
10149 Pa
: constant Node_Id
:= Parent
(N
);
10150 Pk
: constant Node_Kind
:= Nkind
(Pa
);
10154 Check_Ada_83_Warning
;
10155 Check_Valid_Library_Unit_Pragma
;
10157 if Nkind
(N
) = N_Null_Statement
then
10161 Ent
:= Find_Lib_Unit_Name
;
10163 -- This filters out pragmas inside generic parent then
10164 -- show up inside instantiation
10167 and then not (Pk
= N_Package_Specification
10168 and then Present
(Generic_Parent
(Pa
)))
10170 if not Debug_Flag_U
then
10171 Set_Is_Preelaborated
(Ent
);
10172 Set_Suppress_Elaboration_Warnings
(Ent
);
10177 ---------------------
10178 -- Preelaborate_05 --
10179 ---------------------
10181 -- pragma Preelaborate_05 [(library_unit_NAME)];
10183 -- This pragma is useable only in GNAT_Mode, where it is used like
10184 -- pragma Preelaborate but it is only effective in Ada 2005 mode
10185 -- (otherwise it is ignored). This is used to implement AI-362 which
10186 -- recategorizes some run-time packages in Ada 2005 mode.
10188 when Pragma_Preelaborate_05
=> Preelaborate_05
: declare
10193 Check_Valid_Library_Unit_Pragma
;
10195 if not GNAT_Mode
then
10196 Error_Pragma
("pragma% only available in GNAT mode");
10199 if Nkind
(N
) = N_Null_Statement
then
10203 -- This is one of the few cases where we need to test the value of
10204 -- Ada_Version_Explicit rather than Ada_Version (which is always
10205 -- set to Ada_12 in a predefined unit), we need to know the
10206 -- explicit version set to know if this pragma is active.
10208 if Ada_Version_Explicit
>= Ada_05
then
10209 Ent
:= Find_Lib_Unit_Name
;
10210 Set_Is_Preelaborated
(Ent
);
10211 Set_Suppress_Elaboration_Warnings
(Ent
);
10213 end Preelaborate_05
;
10219 -- pragma Priority (EXPRESSION);
10221 when Pragma_Priority
=> Priority
: declare
10222 P
: constant Node_Id
:= Parent
(N
);
10226 Check_No_Identifiers
;
10227 Check_Arg_Count
(1);
10231 if Nkind
(P
) = N_Subprogram_Body
then
10232 Check_In_Main_Program
;
10234 Arg
:= Expression
(Arg1
);
10235 Analyze_And_Resolve
(Arg
, Standard_Integer
);
10239 if not Is_Static_Expression
(Arg
) then
10240 Flag_Non_Static_Expr
10241 ("main subprogram priority is not static!", Arg
);
10244 -- If constraint error, then we already signalled an error
10246 elsif Raises_Constraint_Error
(Arg
) then
10249 -- Otherwise check in range
10253 Val
: constant Uint
:= Expr_Value
(Arg
);
10257 or else Val
> Expr_Value
(Expression
10258 (Parent
(RTE
(RE_Max_Priority
))))
10261 ("main subprogram priority is out of range", Arg1
);
10267 (Current_Sem_Unit
, UI_To_Int
(Expr_Value
(Arg
)));
10269 -- Load an arbitrary entity from System.Tasking to make sure
10270 -- this package is implicitly with'ed, since we need to have
10271 -- the tasking run-time active for the pragma Priority to have
10275 Discard
: Entity_Id
;
10276 pragma Warnings
(Off
, Discard
);
10278 Discard
:= RTE
(RE_Task_List
);
10281 -- Task or Protected, must be of type Integer
10283 elsif Nkind_In
(P
, N_Protected_Definition
, N_Task_Definition
) then
10284 Arg
:= Expression
(Arg1
);
10286 -- The expression must be analyzed in the special manner
10287 -- described in "Handling of Default and Per-Object
10288 -- Expressions" in sem.ads.
10290 Preanalyze_Spec_Expression
(Arg
, Standard_Integer
);
10292 if not Is_Static_Expression
(Arg
) then
10293 Check_Restriction
(Static_Priorities
, Arg
);
10296 -- Anything else is incorrect
10302 if Has_Priority_Pragma
(P
) then
10303 Error_Pragma
("duplicate pragma% not allowed");
10305 Set_Has_Priority_Pragma
(P
, True);
10307 if Nkind_In
(P
, N_Protected_Definition
, N_Task_Definition
) then
10308 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
10309 -- exp_ch9 should use this ???
10314 -----------------------------------
10315 -- Priority_Specific_Dispatching --
10316 -----------------------------------
10318 -- pragma Priority_Specific_Dispatching (
10319 -- policy_IDENTIFIER,
10320 -- first_priority_EXPRESSION,
10321 -- last_priority_EXPRESSION);
10323 when Pragma_Priority_Specific_Dispatching
=>
10324 Priority_Specific_Dispatching
: declare
10325 Prio_Id
: constant Entity_Id
:= RTE
(RE_Any_Priority
);
10326 -- This is the entity System.Any_Priority;
10329 Lower_Bound
: Node_Id
;
10330 Upper_Bound
: Node_Id
;
10336 Check_Arg_Count
(3);
10337 Check_No_Identifiers
;
10338 Check_Arg_Is_Task_Dispatching_Policy
(Arg1
);
10339 Check_Valid_Configuration_Pragma
;
10340 Get_Name_String
(Chars
(Expression
(Arg1
)));
10341 DP
:= Fold_Upper
(Name_Buffer
(1));
10343 Lower_Bound
:= Expression
(Arg2
);
10344 Check_Arg_Is_Static_Expression
(Lower_Bound
, Standard_Integer
);
10345 Lower_Val
:= Expr_Value
(Lower_Bound
);
10347 Upper_Bound
:= Expression
(Arg3
);
10348 Check_Arg_Is_Static_Expression
(Upper_Bound
, Standard_Integer
);
10349 Upper_Val
:= Expr_Value
(Upper_Bound
);
10351 -- It is not allowed to use Task_Dispatching_Policy and
10352 -- Priority_Specific_Dispatching in the same partition.
10354 if Task_Dispatching_Policy
/= ' ' then
10355 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
10357 ("pragma% incompatible with Task_Dispatching_Policy#");
10359 -- Check lower bound in range
10361 elsif Lower_Val
< Expr_Value
(Type_Low_Bound
(Prio_Id
))
10363 Lower_Val
> Expr_Value
(Type_High_Bound
(Prio_Id
))
10366 ("first_priority is out of range", Arg2
);
10368 -- Check upper bound in range
10370 elsif Upper_Val
< Expr_Value
(Type_Low_Bound
(Prio_Id
))
10372 Upper_Val
> Expr_Value
(Type_High_Bound
(Prio_Id
))
10375 ("last_priority is out of range", Arg3
);
10377 -- Check that the priority range is valid
10379 elsif Lower_Val
> Upper_Val
then
10381 ("last_priority_expression must be greater than" &
10382 " or equal to first_priority_expression");
10384 -- Store the new policy, but always preserve System_Location since
10385 -- we like the error message with the run-time name.
10388 -- Check overlapping in the priority ranges specified in other
10389 -- Priority_Specific_Dispatching pragmas within the same
10390 -- partition. We can only check those we know about!
10393 Specific_Dispatching
.First
.. Specific_Dispatching
.Last
10395 if Specific_Dispatching
.Table
(J
).First_Priority
in
10396 UI_To_Int
(Lower_Val
) .. UI_To_Int
(Upper_Val
)
10397 or else Specific_Dispatching
.Table
(J
).Last_Priority
in
10398 UI_To_Int
(Lower_Val
) .. UI_To_Int
(Upper_Val
)
10401 Specific_Dispatching
.Table
(J
).Pragma_Loc
;
10403 ("priority range overlaps with "
10404 & "Priority_Specific_Dispatching#");
10408 -- The use of Priority_Specific_Dispatching is incompatible
10409 -- with Task_Dispatching_Policy.
10411 if Task_Dispatching_Policy
/= ' ' then
10412 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
10414 ("Priority_Specific_Dispatching incompatible "
10415 & "with Task_Dispatching_Policy#");
10418 -- The use of Priority_Specific_Dispatching forces ceiling
10421 if Locking_Policy
/= ' ' and then Locking_Policy
/= 'C' then
10422 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
10424 ("Priority_Specific_Dispatching incompatible "
10425 & "with Locking_Policy#");
10427 -- Set the Ceiling_Locking policy, but preserve System_Location
10428 -- since we like the error message with the run time name.
10431 Locking_Policy
:= 'C';
10433 if Locking_Policy_Sloc
/= System_Location
then
10434 Locking_Policy_Sloc
:= Loc
;
10438 -- Add entry in the table
10440 Specific_Dispatching
.Append
10441 ((Dispatching_Policy
=> DP
,
10442 First_Priority
=> UI_To_Int
(Lower_Val
),
10443 Last_Priority
=> UI_To_Int
(Upper_Val
),
10444 Pragma_Loc
=> Loc
));
10446 end Priority_Specific_Dispatching
;
10452 -- pragma Profile (profile_IDENTIFIER);
10454 -- profile_IDENTIFIER => Restricted | Ravenscar
10456 when Pragma_Profile
=>
10458 Check_Arg_Count
(1);
10459 Check_Valid_Configuration_Pragma
;
10460 Check_No_Identifiers
;
10463 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
10465 if Chars
(Argx
) = Name_Ravenscar
then
10466 Set_Ravenscar_Profile
(N
);
10467 elsif Chars
(Argx
) = Name_Restricted
then
10468 Set_Profile_Restrictions
10469 (Restricted
, N
, Warn
=> Treat_Restrictions_As_Warnings
);
10471 Error_Pragma_Arg
("& is not a valid profile", Argx
);
10475 ----------------------
10476 -- Profile_Warnings --
10477 ----------------------
10479 -- pragma Profile_Warnings (profile_IDENTIFIER);
10481 -- profile_IDENTIFIER => Restricted | Ravenscar
10483 when Pragma_Profile_Warnings
=>
10485 Check_Arg_Count
(1);
10486 Check_Valid_Configuration_Pragma
;
10487 Check_No_Identifiers
;
10490 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
10492 if Chars
(Argx
) = Name_Ravenscar
then
10493 Set_Profile_Restrictions
(Ravenscar
, N
, Warn
=> True);
10494 elsif Chars
(Argx
) = Name_Restricted
then
10495 Set_Profile_Restrictions
(Restricted
, N
, Warn
=> True);
10497 Error_Pragma_Arg
("& is not a valid profile", Argx
);
10501 --------------------------
10502 -- Propagate_Exceptions --
10503 --------------------------
10505 -- pragma Propagate_Exceptions;
10507 -- Note: this pragma is obsolete and has no effect
10509 when Pragma_Propagate_Exceptions
=>
10511 Check_Arg_Count
(0);
10513 if In_Extended_Main_Source_Unit
(N
) then
10514 Propagate_Exceptions
:= True;
10521 -- pragma Psect_Object (
10522 -- [Internal =>] LOCAL_NAME,
10523 -- [, [External =>] EXTERNAL_SYMBOL]
10524 -- [, [Size =>] EXTERNAL_SYMBOL]);
10526 when Pragma_Psect_Object | Pragma_Common_Object
=>
10527 Psect_Object
: declare
10528 Args
: Args_List
(1 .. 3);
10529 Names
: constant Name_List
(1 .. 3) := (
10534 Internal
: Node_Id
renames Args
(1);
10535 External
: Node_Id
renames Args
(2);
10536 Size
: Node_Id
renames Args
(3);
10538 Def_Id
: Entity_Id
;
10540 procedure Check_Too_Long
(Arg
: Node_Id
);
10541 -- Posts message if the argument is an identifier with more
10542 -- than 31 characters, or a string literal with more than
10543 -- 31 characters, and we are operating under VMS
10545 --------------------
10546 -- Check_Too_Long --
10547 --------------------
10549 procedure Check_Too_Long
(Arg
: Node_Id
) is
10550 X
: constant Node_Id
:= Original_Node
(Arg
);
10553 if not Nkind_In
(X
, N_String_Literal
, N_Identifier
) then
10555 ("inappropriate argument for pragma %", Arg
);
10558 if OpenVMS_On_Target
then
10559 if (Nkind
(X
) = N_String_Literal
10560 and then String_Length
(Strval
(X
)) > 31)
10562 (Nkind
(X
) = N_Identifier
10563 and then Length_Of_Name
(Chars
(X
)) > 31)
10566 ("argument for pragma % is longer than 31 characters",
10570 end Check_Too_Long
;
10572 -- Start of processing for Common_Object/Psect_Object
10576 Gather_Associations
(Names
, Args
);
10577 Process_Extended_Import_Export_Internal_Arg
(Internal
);
10579 Def_Id
:= Entity
(Internal
);
10581 if not Ekind_In
(Def_Id
, E_Constant
, E_Variable
) then
10583 ("pragma% must designate an object", Internal
);
10586 Check_Too_Long
(Internal
);
10588 if Is_Imported
(Def_Id
) or else Is_Exported
(Def_Id
) then
10590 ("cannot use pragma% for imported/exported object",
10594 if Is_Concurrent_Type
(Etype
(Internal
)) then
10596 ("cannot specify pragma % for task/protected object",
10600 if Has_Rep_Pragma
(Def_Id
, Name_Common_Object
)
10602 Has_Rep_Pragma
(Def_Id
, Name_Psect_Object
)
10604 Error_Msg_N
("?duplicate Common/Psect_Object pragma", N
);
10607 if Ekind
(Def_Id
) = E_Constant
then
10609 ("cannot specify pragma % for a constant", Internal
);
10612 if Is_Record_Type
(Etype
(Internal
)) then
10618 Ent
:= First_Entity
(Etype
(Internal
));
10619 while Present
(Ent
) loop
10620 Decl
:= Declaration_Node
(Ent
);
10622 if Ekind
(Ent
) = E_Component
10623 and then Nkind
(Decl
) = N_Component_Declaration
10624 and then Present
(Expression
(Decl
))
10625 and then Warn_On_Export_Import
10628 ("?object for pragma % has defaults", Internal
);
10638 if Present
(Size
) then
10639 Check_Too_Long
(Size
);
10642 if Present
(External
) then
10643 Check_Arg_Is_External_Name
(External
);
10644 Check_Too_Long
(External
);
10647 -- If all error tests pass, link pragma on to the rep item chain
10649 Record_Rep_Item
(Def_Id
, N
);
10656 -- pragma Pure [(library_unit_NAME)];
10658 when Pragma_Pure
=> Pure
: declare
10662 Check_Ada_83_Warning
;
10663 Check_Valid_Library_Unit_Pragma
;
10665 if Nkind
(N
) = N_Null_Statement
then
10669 Ent
:= Find_Lib_Unit_Name
;
10671 Set_Has_Pragma_Pure
(Ent
);
10672 Set_Suppress_Elaboration_Warnings
(Ent
);
10679 -- pragma Pure_05 [(library_unit_NAME)];
10681 -- This pragma is useable only in GNAT_Mode, where it is used like
10682 -- pragma Pure but it is only effective in Ada 2005 mode (otherwise
10683 -- it is ignored). It may be used after a pragma Preelaborate, in
10684 -- which case it overrides the effect of the pragma Preelaborate.
10685 -- This is used to implement AI-362 which recategorizes some run-time
10686 -- packages in Ada 2005 mode.
10688 when Pragma_Pure_05
=> Pure_05
: declare
10693 Check_Valid_Library_Unit_Pragma
;
10695 if not GNAT_Mode
then
10696 Error_Pragma
("pragma% only available in GNAT mode");
10699 if Nkind
(N
) = N_Null_Statement
then
10703 -- This is one of the few cases where we need to test the value of
10704 -- Ada_Version_Explicit rather than Ada_Version (which is always
10705 -- set to Ada_12 in a predefined unit), we need to know the
10706 -- explicit version set to know if this pragma is active.
10708 if Ada_Version_Explicit
>= Ada_05
then
10709 Ent
:= Find_Lib_Unit_Name
;
10710 Set_Is_Preelaborated
(Ent
, False);
10712 Set_Suppress_Elaboration_Warnings
(Ent
);
10716 -------------------
10717 -- Pure_Function --
10718 -------------------
10720 -- pragma Pure_Function ([Entity =>] function_LOCAL_NAME);
10722 when Pragma_Pure_Function
=> Pure_Function
: declare
10725 Def_Id
: Entity_Id
;
10726 Effective
: Boolean := False;
10730 Check_Arg_Count
(1);
10731 Check_Optional_Identifier
(Arg1
, Name_Entity
);
10732 Check_Arg_Is_Local_Name
(Arg1
);
10733 E_Id
:= Expression
(Arg1
);
10735 if Error_Posted
(E_Id
) then
10739 -- Loop through homonyms (overloadings) of referenced entity
10741 E
:= Entity
(E_Id
);
10743 if Present
(E
) then
10745 Def_Id
:= Get_Base_Subprogram
(E
);
10747 if not Ekind_In
(Def_Id
, E_Function
,
10748 E_Generic_Function
,
10752 ("pragma% requires a function name", Arg1
);
10755 Set_Is_Pure
(Def_Id
);
10757 if not Has_Pragma_Pure_Function
(Def_Id
) then
10758 Set_Has_Pragma_Pure_Function
(Def_Id
);
10763 exit when No
(E
) or else Scope
(E
) /= Current_Scope
;
10767 and then Warn_On_Redundant_Constructs
10770 ("pragma Pure_Function on& is redundant?",
10776 --------------------
10777 -- Queuing_Policy --
10778 --------------------
10780 -- pragma Queuing_Policy (policy_IDENTIFIER);
10782 when Pragma_Queuing_Policy
=> declare
10786 Check_Ada_83_Warning
;
10787 Check_Arg_Count
(1);
10788 Check_No_Identifiers
;
10789 Check_Arg_Is_Queuing_Policy
(Arg1
);
10790 Check_Valid_Configuration_Pragma
;
10791 Get_Name_String
(Chars
(Expression
(Arg1
)));
10792 QP
:= Fold_Upper
(Name_Buffer
(1));
10794 if Queuing_Policy
/= ' '
10795 and then Queuing_Policy
/= QP
10797 Error_Msg_Sloc
:= Queuing_Policy_Sloc
;
10798 Error_Pragma
("queuing policy incompatible with policy#");
10800 -- Set new policy, but always preserve System_Location since we
10801 -- like the error message with the run time name.
10804 Queuing_Policy
:= QP
;
10806 if Queuing_Policy_Sloc
/= System_Location
then
10807 Queuing_Policy_Sloc
:= Loc
;
10812 -----------------------
10813 -- Relative_Deadline --
10814 -----------------------
10816 -- pragma Relative_Deadline (time_span_EXPRESSION);
10818 when Pragma_Relative_Deadline
=> Relative_Deadline
: declare
10819 P
: constant Node_Id
:= Parent
(N
);
10824 Check_No_Identifiers
;
10825 Check_Arg_Count
(1);
10827 Arg
:= Expression
(Arg1
);
10829 -- The expression must be analyzed in the special manner described
10830 -- in "Handling of Default and Per-Object Expressions" in sem.ads.
10832 Preanalyze_Spec_Expression
(Arg
, RTE
(RE_Time_Span
));
10836 if Nkind
(P
) = N_Subprogram_Body
then
10837 Check_In_Main_Program
;
10841 elsif Nkind
(P
) = N_Task_Definition
then
10844 -- Anything else is incorrect
10850 if Has_Relative_Deadline_Pragma
(P
) then
10851 Error_Pragma
("duplicate pragma% not allowed");
10853 Set_Has_Relative_Deadline_Pragma
(P
, True);
10855 if Nkind
(P
) = N_Task_Definition
then
10856 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
10859 end Relative_Deadline
;
10861 ---------------------------
10862 -- Remote_Call_Interface --
10863 ---------------------------
10865 -- pragma Remote_Call_Interface [(library_unit_NAME)];
10867 when Pragma_Remote_Call_Interface
=> Remote_Call_Interface
: declare
10868 Cunit_Node
: Node_Id
;
10869 Cunit_Ent
: Entity_Id
;
10873 Check_Ada_83_Warning
;
10874 Check_Valid_Library_Unit_Pragma
;
10876 if Nkind
(N
) = N_Null_Statement
then
10880 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
10881 K
:= Nkind
(Unit
(Cunit_Node
));
10882 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
10884 if K
= N_Package_Declaration
10885 or else K
= N_Generic_Package_Declaration
10886 or else K
= N_Subprogram_Declaration
10887 or else K
= N_Generic_Subprogram_Declaration
10888 or else (K
= N_Subprogram_Body
10889 and then Acts_As_Spec
(Unit
(Cunit_Node
)))
10894 "pragma% must apply to package or subprogram declaration");
10897 Set_Is_Remote_Call_Interface
(Cunit_Ent
);
10898 end Remote_Call_Interface
;
10904 -- pragma Remote_Types [(library_unit_NAME)];
10906 when Pragma_Remote_Types
=> Remote_Types
: declare
10907 Cunit_Node
: Node_Id
;
10908 Cunit_Ent
: Entity_Id
;
10911 Check_Ada_83_Warning
;
10912 Check_Valid_Library_Unit_Pragma
;
10914 if Nkind
(N
) = N_Null_Statement
then
10918 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
10919 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
10921 if not Nkind_In
(Unit
(Cunit_Node
), N_Package_Declaration
,
10922 N_Generic_Package_Declaration
)
10925 ("pragma% can only apply to a package declaration");
10928 Set_Is_Remote_Types
(Cunit_Ent
);
10935 -- pragma Ravenscar;
10937 when Pragma_Ravenscar
=>
10939 Check_Arg_Count
(0);
10940 Check_Valid_Configuration_Pragma
;
10941 Set_Ravenscar_Profile
(N
);
10943 if Warn_On_Obsolescent_Feature
then
10944 Error_Msg_N
("pragma Ravenscar is an obsolescent feature?", N
);
10945 Error_Msg_N
("|use pragma Profile (Ravenscar) instead", N
);
10948 -------------------------
10949 -- Restricted_Run_Time --
10950 -------------------------
10952 -- pragma Restricted_Run_Time;
10954 when Pragma_Restricted_Run_Time
=>
10956 Check_Arg_Count
(0);
10957 Check_Valid_Configuration_Pragma
;
10958 Set_Profile_Restrictions
10959 (Restricted
, N
, Warn
=> Treat_Restrictions_As_Warnings
);
10961 if Warn_On_Obsolescent_Feature
then
10963 ("pragma Restricted_Run_Time is an obsolescent feature?", N
);
10964 Error_Msg_N
("|use pragma Profile (Restricted) instead", N
);
10971 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
10974 -- restriction_IDENTIFIER
10975 -- | restriction_parameter_IDENTIFIER => EXPRESSION
10977 when Pragma_Restrictions
=>
10978 Process_Restrictions_Or_Restriction_Warnings
10979 (Warn
=> Treat_Restrictions_As_Warnings
);
10981 --------------------------
10982 -- Restriction_Warnings --
10983 --------------------------
10985 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
10988 -- restriction_IDENTIFIER
10989 -- | restriction_parameter_IDENTIFIER => EXPRESSION
10991 when Pragma_Restriction_Warnings
=>
10993 Process_Restrictions_Or_Restriction_Warnings
(Warn
=> True);
10999 -- pragma Reviewable;
11001 when Pragma_Reviewable
=>
11002 Check_Ada_83_Warning
;
11003 Check_Arg_Count
(0);
11005 -- Call dummy debugging function rv. This is done to assist front
11006 -- end debugging. By placing a Reviewable pragma in the source
11007 -- program, a breakpoint on rv catches this place in the source,
11008 -- allowing convenient stepping to the point of interest.
11012 --------------------------
11013 -- Short_Circuit_And_Or --
11014 --------------------------
11016 when Pragma_Short_Circuit_And_Or
=>
11018 Check_Arg_Count
(0);
11019 Check_Valid_Configuration_Pragma
;
11020 Short_Circuit_And_Or
:= True;
11022 -------------------
11023 -- Share_Generic --
11024 -------------------
11026 -- pragma Share_Generic (NAME {, NAME});
11028 when Pragma_Share_Generic
=>
11030 Process_Generic_List
;
11036 -- pragma Shared (LOCAL_NAME);
11038 when Pragma_Shared
=>
11040 Process_Atomic_Shared_Volatile
;
11042 --------------------
11043 -- Shared_Passive --
11044 --------------------
11046 -- pragma Shared_Passive [(library_unit_NAME)];
11048 -- Set the flag Is_Shared_Passive of program unit name entity
11050 when Pragma_Shared_Passive
=> Shared_Passive
: declare
11051 Cunit_Node
: Node_Id
;
11052 Cunit_Ent
: Entity_Id
;
11055 Check_Ada_83_Warning
;
11056 Check_Valid_Library_Unit_Pragma
;
11058 if Nkind
(N
) = N_Null_Statement
then
11062 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
11063 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
11065 if not Nkind_In
(Unit
(Cunit_Node
), N_Package_Declaration
,
11066 N_Generic_Package_Declaration
)
11069 ("pragma% can only apply to a package declaration");
11072 Set_Is_Shared_Passive
(Cunit_Ent
);
11073 end Shared_Passive
;
11075 -----------------------
11076 -- Short_Descriptors --
11077 -----------------------
11079 -- pragma Short_Descriptors;
11081 when Pragma_Short_Descriptors
=>
11083 Check_Arg_Count
(0);
11084 Check_Valid_Configuration_Pragma
;
11085 Short_Descriptors
:= True;
11087 ----------------------
11088 -- Source_File_Name --
11089 ----------------------
11091 -- There are five forms for this pragma:
11093 -- pragma Source_File_Name (
11094 -- [UNIT_NAME =>] unit_NAME,
11095 -- BODY_FILE_NAME => STRING_LITERAL
11096 -- [, [INDEX =>] INTEGER_LITERAL]);
11098 -- pragma Source_File_Name (
11099 -- [UNIT_NAME =>] unit_NAME,
11100 -- SPEC_FILE_NAME => STRING_LITERAL
11101 -- [, [INDEX =>] INTEGER_LITERAL]);
11103 -- pragma Source_File_Name (
11104 -- BODY_FILE_NAME => STRING_LITERAL
11105 -- [, DOT_REPLACEMENT => STRING_LITERAL]
11106 -- [, CASING => CASING_SPEC]);
11108 -- pragma Source_File_Name (
11109 -- SPEC_FILE_NAME => STRING_LITERAL
11110 -- [, DOT_REPLACEMENT => STRING_LITERAL]
11111 -- [, CASING => CASING_SPEC]);
11113 -- pragma Source_File_Name (
11114 -- SUBUNIT_FILE_NAME => STRING_LITERAL
11115 -- [, DOT_REPLACEMENT => STRING_LITERAL]
11116 -- [, CASING => CASING_SPEC]);
11118 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
11120 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
11121 -- Source_File_Name (SFN), however their usage is exclusive: SFN can
11122 -- only be used when no project file is used, while SFNP can only be
11123 -- used when a project file is used.
11125 -- No processing here. Processing was completed during parsing, since
11126 -- we need to have file names set as early as possible. Units are
11127 -- loaded well before semantic processing starts.
11129 -- The only processing we defer to this point is the check for
11130 -- correct placement.
11132 when Pragma_Source_File_Name
=>
11134 Check_Valid_Configuration_Pragma
;
11136 ------------------------------
11137 -- Source_File_Name_Project --
11138 ------------------------------
11140 -- See Source_File_Name for syntax
11142 -- No processing here. Processing was completed during parsing, since
11143 -- we need to have file names set as early as possible. Units are
11144 -- loaded well before semantic processing starts.
11146 -- The only processing we defer to this point is the check for
11147 -- correct placement.
11149 when Pragma_Source_File_Name_Project
=>
11151 Check_Valid_Configuration_Pragma
;
11153 -- Check that a pragma Source_File_Name_Project is used only in a
11154 -- configuration pragmas file.
11156 -- Pragmas Source_File_Name_Project should only be generated by
11157 -- the Project Manager in configuration pragmas files.
11159 -- This is really an ugly test. It seems to depend on some
11160 -- accidental and undocumented property. At the very least it
11161 -- needs to be documented, but it would be better to have a
11162 -- clean way of testing if we are in a configuration file???
11164 if Present
(Parent
(N
)) then
11166 ("pragma% can only appear in a configuration pragmas file");
11169 ----------------------
11170 -- Source_Reference --
11171 ----------------------
11173 -- pragma Source_Reference (INTEGER_LITERAL [, STRING_LITERAL]);
11175 -- Nothing to do, all processing completed in Par.Prag, since we need
11176 -- the information for possible parser messages that are output.
11178 when Pragma_Source_Reference
=>
11181 --------------------------------
11182 -- Static_Elaboration_Desired --
11183 --------------------------------
11185 -- pragma Static_Elaboration_Desired (DIRECT_NAME);
11187 when Pragma_Static_Elaboration_Desired
=>
11189 Check_At_Most_N_Arguments
(1);
11191 if Is_Compilation_Unit
(Current_Scope
)
11192 and then Ekind
(Current_Scope
) = E_Package
11194 Set_Static_Elaboration_Desired
(Current_Scope
, True);
11196 Error_Pragma
("pragma% must apply to a library-level package");
11203 -- pragma Storage_Size (EXPRESSION);
11205 when Pragma_Storage_Size
=> Storage_Size
: declare
11206 P
: constant Node_Id
:= Parent
(N
);
11210 Check_No_Identifiers
;
11211 Check_Arg_Count
(1);
11213 -- The expression must be analyzed in the special manner described
11214 -- in "Handling of Default Expressions" in sem.ads.
11216 Arg
:= Expression
(Arg1
);
11217 Preanalyze_Spec_Expression
(Arg
, Any_Integer
);
11219 if not Is_Static_Expression
(Arg
) then
11220 Check_Restriction
(Static_Storage_Size
, Arg
);
11223 if Nkind
(P
) /= N_Task_Definition
then
11228 if Has_Storage_Size_Pragma
(P
) then
11229 Error_Pragma
("duplicate pragma% not allowed");
11231 Set_Has_Storage_Size_Pragma
(P
, True);
11234 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
11235 -- ??? exp_ch9 should use this!
11243 -- pragma Storage_Unit (NUMERIC_LITERAL);
11245 -- Only permitted argument is System'Storage_Unit value
11247 when Pragma_Storage_Unit
=>
11248 Check_No_Identifiers
;
11249 Check_Arg_Count
(1);
11250 Check_Arg_Is_Integer_Literal
(Arg1
);
11252 if Intval
(Expression
(Arg1
)) /=
11253 UI_From_Int
(Ttypes
.System_Storage_Unit
)
11255 Error_Msg_Uint_1
:= UI_From_Int
(Ttypes
.System_Storage_Unit
);
11257 ("the only allowed argument for pragma% is ^", Arg1
);
11260 --------------------
11261 -- Stream_Convert --
11262 --------------------
11264 -- pragma Stream_Convert (
11265 -- [Entity =>] type_LOCAL_NAME,
11266 -- [Read =>] function_NAME,
11267 -- [Write =>] function NAME);
11269 when Pragma_Stream_Convert
=> Stream_Convert
: declare
11271 procedure Check_OK_Stream_Convert_Function
(Arg
: Node_Id
);
11272 -- Check that the given argument is the name of a local function
11273 -- of one argument that is not overloaded earlier in the current
11274 -- local scope. A check is also made that the argument is a
11275 -- function with one parameter.
11277 --------------------------------------
11278 -- Check_OK_Stream_Convert_Function --
11279 --------------------------------------
11281 procedure Check_OK_Stream_Convert_Function
(Arg
: Node_Id
) is
11285 Check_Arg_Is_Local_Name
(Arg
);
11286 Ent
:= Entity
(Expression
(Arg
));
11288 if Has_Homonym
(Ent
) then
11290 ("argument for pragma% may not be overloaded", Arg
);
11293 if Ekind
(Ent
) /= E_Function
11294 or else No
(First_Formal
(Ent
))
11295 or else Present
(Next_Formal
(First_Formal
(Ent
)))
11298 ("argument for pragma% must be" &
11299 " function of one argument", Arg
);
11301 end Check_OK_Stream_Convert_Function
;
11303 -- Start of processing for Stream_Convert
11307 Check_Arg_Order
((Name_Entity
, Name_Read
, Name_Write
));
11308 Check_Arg_Count
(3);
11309 Check_Optional_Identifier
(Arg1
, Name_Entity
);
11310 Check_Optional_Identifier
(Arg2
, Name_Read
);
11311 Check_Optional_Identifier
(Arg3
, Name_Write
);
11312 Check_Arg_Is_Local_Name
(Arg1
);
11313 Check_OK_Stream_Convert_Function
(Arg2
);
11314 Check_OK_Stream_Convert_Function
(Arg3
);
11317 Typ
: constant Entity_Id
:=
11318 Underlying_Type
(Entity
(Expression
(Arg1
)));
11319 Read
: constant Entity_Id
:= Entity
(Expression
(Arg2
));
11320 Write
: constant Entity_Id
:= Entity
(Expression
(Arg3
));
11323 Check_First_Subtype
(Arg1
);
11325 -- Check for too early or too late. Note that we don't enforce
11326 -- the rule about primitive operations in this case, since, as
11327 -- is the case for explicit stream attributes themselves, these
11328 -- restrictions are not appropriate. Note that the chaining of
11329 -- the pragma by Rep_Item_Too_Late is actually the critical
11330 -- processing done for this pragma.
11332 if Rep_Item_Too_Early
(Typ
, N
)
11334 Rep_Item_Too_Late
(Typ
, N
, FOnly
=> True)
11339 -- Return if previous error
11341 if Etype
(Typ
) = Any_Type
11343 Etype
(Read
) = Any_Type
11345 Etype
(Write
) = Any_Type
11352 if Underlying_Type
(Etype
(Read
)) /= Typ
then
11354 ("incorrect return type for function&", Arg2
);
11357 if Underlying_Type
(Etype
(First_Formal
(Write
))) /= Typ
then
11359 ("incorrect parameter type for function&", Arg3
);
11362 if Underlying_Type
(Etype
(First_Formal
(Read
))) /=
11363 Underlying_Type
(Etype
(Write
))
11366 ("result type of & does not match Read parameter type",
11370 end Stream_Convert
;
11372 -------------------------
11373 -- Style_Checks (GNAT) --
11374 -------------------------
11376 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
11378 -- This is processed by the parser since some of the style checks
11379 -- take place during source scanning and parsing. This means that
11380 -- we don't need to issue error messages here.
11382 when Pragma_Style_Checks
=> Style_Checks
: declare
11383 A
: constant Node_Id
:= Expression
(Arg1
);
11389 Check_No_Identifiers
;
11391 -- Two argument form
11393 if Arg_Count
= 2 then
11394 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
11401 E_Id
:= Expression
(Arg2
);
11404 if not Is_Entity_Name
(E_Id
) then
11406 ("second argument of pragma% must be entity name",
11410 E
:= Entity
(E_Id
);
11416 Set_Suppress_Style_Checks
(E
,
11417 (Chars
(Expression
(Arg1
)) = Name_Off
));
11418 exit when No
(Homonym
(E
));
11424 -- One argument form
11427 Check_Arg_Count
(1);
11429 if Nkind
(A
) = N_String_Literal
then
11433 Slen
: constant Natural := Natural (String_Length
(S
));
11434 Options
: String (1 .. Slen
);
11440 C
:= Get_String_Char
(S
, Int
(J
));
11441 exit when not In_Character_Range
(C
);
11442 Options
(J
) := Get_Character
(C
);
11444 -- If at end of string, set options. As per discussion
11445 -- above, no need to check for errors, since we issued
11446 -- them in the parser.
11449 Set_Style_Check_Options
(Options
);
11457 elsif Nkind
(A
) = N_Identifier
then
11458 if Chars
(A
) = Name_All_Checks
then
11460 Set_GNAT_Style_Check_Options
;
11462 Set_Default_Style_Check_Options
;
11465 elsif Chars
(A
) = Name_On
then
11466 Style_Check
:= True;
11468 elsif Chars
(A
) = Name_Off
then
11469 Style_Check
:= False;
11479 -- pragma Subtitle ([Subtitle =>] STRING_LITERAL);
11481 when Pragma_Subtitle
=>
11483 Check_Arg_Count
(1);
11484 Check_Optional_Identifier
(Arg1
, Name_Subtitle
);
11485 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
11492 -- pragma Suppress (IDENTIFIER [, [On =>] NAME]);
11494 when Pragma_Suppress
=>
11495 Process_Suppress_Unsuppress
(True);
11501 -- pragma Suppress_All;
11503 -- The only check made here is that the pragma appears in the proper
11504 -- place, i.e. following a compilation unit. If indeed it appears in
11505 -- this context, then the parser has already inserted an equivalent
11506 -- pragma Suppress (All_Checks) to get the required effect.
11508 when Pragma_Suppress_All
=>
11510 Check_Arg_Count
(0);
11512 if Nkind
(Parent
(N
)) /= N_Compilation_Unit_Aux
11513 or else not Is_List_Member
(N
)
11514 or else List_Containing
(N
) /= Pragmas_After
(Parent
(N
))
11517 ("misplaced pragma%, must follow compilation unit");
11520 -------------------------
11521 -- Suppress_Debug_Info --
11522 -------------------------
11524 -- pragma Suppress_Debug_Info ([Entity =>] LOCAL_NAME);
11526 when Pragma_Suppress_Debug_Info
=>
11528 Check_Arg_Count
(1);
11529 Check_Optional_Identifier
(Arg1
, Name_Entity
);
11530 Check_Arg_Is_Local_Name
(Arg1
);
11531 Set_Debug_Info_Off
(Entity
(Get_Pragma_Arg
(Arg1
)));
11533 ----------------------------------
11534 -- Suppress_Exception_Locations --
11535 ----------------------------------
11537 -- pragma Suppress_Exception_Locations;
11539 when Pragma_Suppress_Exception_Locations
=>
11541 Check_Arg_Count
(0);
11542 Check_Valid_Configuration_Pragma
;
11543 Exception_Locations_Suppressed
:= True;
11545 -----------------------------
11546 -- Suppress_Initialization --
11547 -----------------------------
11549 -- pragma Suppress_Initialization ([Entity =>] type_Name);
11551 when Pragma_Suppress_Initialization
=> Suppress_Init
: declare
11557 Check_Arg_Count
(1);
11558 Check_Optional_Identifier
(Arg1
, Name_Entity
);
11559 Check_Arg_Is_Local_Name
(Arg1
);
11561 E_Id
:= Expression
(Arg1
);
11563 if Etype
(E_Id
) = Any_Type
then
11567 E
:= Entity
(E_Id
);
11569 if Is_Type
(E
) then
11570 if Is_Incomplete_Or_Private_Type
(E
) then
11571 if No
(Full_View
(Base_Type
(E
))) then
11573 ("argument of pragma% cannot be an incomplete type",
11576 Set_Suppress_Init_Proc
(Full_View
(Base_Type
(E
)));
11579 Set_Suppress_Init_Proc
(Base_Type
(E
));
11584 ("pragma% requires argument that is a type name", Arg1
);
11592 -- pragma System_Name (DIRECT_NAME);
11594 -- Syntax check: one argument, which must be the identifier GNAT or
11595 -- the identifier GCC, no other identifiers are acceptable.
11597 when Pragma_System_Name
=>
11599 Check_No_Identifiers
;
11600 Check_Arg_Count
(1);
11601 Check_Arg_Is_One_Of
(Arg1
, Name_Gcc
, Name_Gnat
);
11603 -----------------------------
11604 -- Task_Dispatching_Policy --
11605 -----------------------------
11607 -- pragma Task_Dispatching_Policy (policy_IDENTIFIER);
11609 when Pragma_Task_Dispatching_Policy
=> declare
11613 Check_Ada_83_Warning
;
11614 Check_Arg_Count
(1);
11615 Check_No_Identifiers
;
11616 Check_Arg_Is_Task_Dispatching_Policy
(Arg1
);
11617 Check_Valid_Configuration_Pragma
;
11618 Get_Name_String
(Chars
(Expression
(Arg1
)));
11619 DP
:= Fold_Upper
(Name_Buffer
(1));
11621 if Task_Dispatching_Policy
/= ' '
11622 and then Task_Dispatching_Policy
/= DP
11624 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
11626 ("task dispatching policy incompatible with policy#");
11628 -- Set new policy, but always preserve System_Location since we
11629 -- like the error message with the run time name.
11632 Task_Dispatching_Policy
:= DP
;
11634 if Task_Dispatching_Policy_Sloc
/= System_Location
then
11635 Task_Dispatching_Policy_Sloc
:= Loc
;
11644 -- pragma Task_Info (EXPRESSION);
11646 when Pragma_Task_Info
=> Task_Info
: declare
11647 P
: constant Node_Id
:= Parent
(N
);
11652 if Nkind
(P
) /= N_Task_Definition
then
11653 Error_Pragma
("pragma% must appear in task definition");
11656 Check_No_Identifiers
;
11657 Check_Arg_Count
(1);
11659 Analyze_And_Resolve
(Expression
(Arg1
), RTE
(RE_Task_Info_Type
));
11661 if Etype
(Expression
(Arg1
)) = Any_Type
then
11665 if Has_Task_Info_Pragma
(P
) then
11666 Error_Pragma
("duplicate pragma% not allowed");
11668 Set_Has_Task_Info_Pragma
(P
, True);
11676 -- pragma Task_Name (string_EXPRESSION);
11678 when Pragma_Task_Name
=> Task_Name
: declare
11679 P
: constant Node_Id
:= Parent
(N
);
11683 Check_No_Identifiers
;
11684 Check_Arg_Count
(1);
11686 Arg
:= Expression
(Arg1
);
11688 -- The expression is used in the call to Create_Task, and must be
11689 -- expanded there, not in the context of the current spec. It must
11690 -- however be analyzed to capture global references, in case it
11691 -- appears in a generic context.
11693 Preanalyze_And_Resolve
(Arg
, Standard_String
);
11695 if Nkind
(P
) /= N_Task_Definition
then
11699 if Has_Task_Name_Pragma
(P
) then
11700 Error_Pragma
("duplicate pragma% not allowed");
11702 Set_Has_Task_Name_Pragma
(P
, True);
11703 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
11711 -- pragma Task_Storage (
11712 -- [Task_Type =>] LOCAL_NAME,
11713 -- [Top_Guard =>] static_integer_EXPRESSION);
11715 when Pragma_Task_Storage
=> Task_Storage
: declare
11716 Args
: Args_List
(1 .. 2);
11717 Names
: constant Name_List
(1 .. 2) := (
11721 Task_Type
: Node_Id
renames Args
(1);
11722 Top_Guard
: Node_Id
renames Args
(2);
11728 Gather_Associations
(Names
, Args
);
11730 if No
(Task_Type
) then
11732 ("missing task_type argument for pragma%");
11735 Check_Arg_Is_Local_Name
(Task_Type
);
11737 Ent
:= Entity
(Task_Type
);
11739 if not Is_Task_Type
(Ent
) then
11741 ("argument for pragma% must be task type", Task_Type
);
11744 if No
(Top_Guard
) then
11746 ("pragma% takes two arguments", Task_Type
);
11748 Check_Arg_Is_Static_Expression
(Top_Guard
, Any_Integer
);
11751 Check_First_Subtype
(Task_Type
);
11753 if Rep_Item_Too_Late
(Ent
, N
) then
11758 --------------------------
11759 -- Thread_Local_Storage --
11760 --------------------------
11762 -- pragma Thread_Local_Storage ([Entity =>] LOCAL_NAME);
11764 when Pragma_Thread_Local_Storage
=> Thread_Local_Storage
: declare
11770 Check_Arg_Count
(1);
11771 Check_Optional_Identifier
(Arg1
, Name_Entity
);
11772 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
11774 Id
:= Expression
(Arg1
);
11777 if not Is_Entity_Name
(Id
)
11778 or else Ekind
(Entity
(Id
)) /= E_Variable
11780 Error_Pragma_Arg
("local variable name required", Arg1
);
11785 if Rep_Item_Too_Early
(E
, N
)
11786 or else Rep_Item_Too_Late
(E
, N
)
11791 Set_Has_Pragma_Thread_Local_Storage
(E
);
11792 Set_Has_Gigi_Rep_Item
(E
);
11793 end Thread_Local_Storage
;
11799 -- pragma Time_Slice (static_duration_EXPRESSION);
11801 when Pragma_Time_Slice
=> Time_Slice
: declare
11807 Check_Arg_Count
(1);
11808 Check_No_Identifiers
;
11809 Check_In_Main_Program
;
11810 Check_Arg_Is_Static_Expression
(Arg1
, Standard_Duration
);
11812 if not Error_Posted
(Arg1
) then
11814 while Present
(Nod
) loop
11815 if Nkind
(Nod
) = N_Pragma
11816 and then Pragma_Name
(Nod
) = Name_Time_Slice
11818 Error_Msg_Name_1
:= Pname
;
11819 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
11826 -- Process only if in main unit
11828 if Get_Source_Unit
(Loc
) = Main_Unit
then
11829 Opt
.Time_Slice_Set
:= True;
11830 Val
:= Expr_Value_R
(Expression
(Arg1
));
11832 if Val
<= Ureal_0
then
11833 Opt
.Time_Slice_Value
:= 0;
11835 elsif Val
> UR_From_Uint
(UI_From_Int
(1000)) then
11836 Opt
.Time_Slice_Value
:= 1_000_000_000
;
11839 Opt
.Time_Slice_Value
:=
11840 UI_To_Int
(UR_To_Uint
(Val
* UI_From_Int
(1_000_000
)));
11849 -- pragma Title (TITLING_OPTION [, TITLING OPTION]);
11851 -- TITLING_OPTION ::=
11852 -- [Title =>] STRING_LITERAL
11853 -- | [Subtitle =>] STRING_LITERAL
11855 when Pragma_Title
=> Title
: declare
11856 Args
: Args_List
(1 .. 2);
11857 Names
: constant Name_List
(1 .. 2) := (
11863 Gather_Associations
(Names
, Args
);
11866 for J
in 1 .. 2 loop
11867 if Present
(Args
(J
)) then
11868 Check_Arg_Is_Static_Expression
(Args
(J
), Standard_String
);
11873 ---------------------
11874 -- Unchecked_Union --
11875 ---------------------
11877 -- pragma Unchecked_Union (first_subtype_LOCAL_NAME)
11879 when Pragma_Unchecked_Union
=> Unchecked_Union
: declare
11880 Assoc
: constant Node_Id
:= Arg1
;
11881 Type_Id
: constant Node_Id
:= Expression
(Assoc
);
11892 Check_No_Identifiers
;
11893 Check_Arg_Count
(1);
11894 Check_Arg_Is_Local_Name
(Arg1
);
11896 Find_Type
(Type_Id
);
11897 Typ
:= Entity
(Type_Id
);
11900 or else Rep_Item_Too_Early
(Typ
, N
)
11904 Typ
:= Underlying_Type
(Typ
);
11907 if Rep_Item_Too_Late
(Typ
, N
) then
11911 Check_First_Subtype
(Arg1
);
11913 -- Note remaining cases are references to a type in the current
11914 -- declarative part. If we find an error, we post the error on
11915 -- the relevant type declaration at an appropriate point.
11917 if not Is_Record_Type
(Typ
) then
11918 Error_Msg_N
("Unchecked_Union must be record type", Typ
);
11921 elsif Is_Tagged_Type
(Typ
) then
11922 Error_Msg_N
("Unchecked_Union must not be tagged", Typ
);
11925 elsif Is_Limited_Type
(Typ
) then
11927 ("Unchecked_Union must not be limited record type", Typ
);
11928 Explain_Limited_Type
(Typ
, Typ
);
11932 if not Has_Discriminants
(Typ
) then
11934 ("Unchecked_Union must have one discriminant", Typ
);
11938 Discr
:= First_Discriminant
(Typ
);
11939 while Present
(Discr
) loop
11940 if No
(Discriminant_Default_Value
(Discr
)) then
11942 ("Unchecked_Union discriminant must have default value",
11945 Next_Discriminant
(Discr
);
11948 Tdef
:= Type_Definition
(Declaration_Node
(Typ
));
11949 Clist
:= Component_List
(Tdef
);
11951 Comp
:= First
(Component_Items
(Clist
));
11952 while Present
(Comp
) loop
11953 Check_Component
(Comp
);
11957 if No
(Clist
) or else No
(Variant_Part
(Clist
)) then
11959 ("Unchecked_Union must have variant part",
11964 Vpart
:= Variant_Part
(Clist
);
11966 Variant
:= First
(Variants
(Vpart
));
11967 while Present
(Variant
) loop
11968 Check_Variant
(Variant
);
11973 Set_Is_Unchecked_Union
(Typ
, True);
11974 Set_Convention
(Typ
, Convention_C
);
11976 Set_Has_Unchecked_Union
(Base_Type
(Typ
), True);
11977 Set_Is_Unchecked_Union
(Base_Type
(Typ
), True);
11978 end Unchecked_Union
;
11980 ------------------------
11981 -- Unimplemented_Unit --
11982 ------------------------
11984 -- pragma Unimplemented_Unit;
11986 -- Note: this only gives an error if we are generating code, or if
11987 -- we are in a generic library unit (where the pragma appears in the
11988 -- body, not in the spec).
11990 when Pragma_Unimplemented_Unit
=> Unimplemented_Unit
: declare
11991 Cunitent
: constant Entity_Id
:=
11992 Cunit_Entity
(Get_Source_Unit
(Loc
));
11993 Ent_Kind
: constant Entity_Kind
:=
11998 Check_Arg_Count
(0);
12000 if Operating_Mode
= Generate_Code
12001 or else Ent_Kind
= E_Generic_Function
12002 or else Ent_Kind
= E_Generic_Procedure
12003 or else Ent_Kind
= E_Generic_Package
12005 Get_Name_String
(Chars
(Cunitent
));
12006 Set_Casing
(Mixed_Case
);
12007 Write_Str
(Name_Buffer
(1 .. Name_Len
));
12008 Write_Str
(" is not supported in this configuration");
12010 raise Unrecoverable_Error
;
12012 end Unimplemented_Unit
;
12014 ------------------------
12015 -- Universal_Aliasing --
12016 ------------------------
12018 -- pragma Universal_Aliasing [([Entity =>] type_LOCAL_NAME)];
12020 when Pragma_Universal_Aliasing
=> Universal_Alias
: declare
12025 Check_Arg_Count
(1);
12026 Check_Optional_Identifier
(Arg2
, Name_Entity
);
12027 Check_Arg_Is_Local_Name
(Arg1
);
12028 E_Id
:= Entity
(Expression
(Arg1
));
12030 if E_Id
= Any_Type
then
12032 elsif No
(E_Id
) or else not Is_Type
(E_Id
) then
12033 Error_Pragma_Arg
("pragma% requires type", Arg1
);
12036 Set_Universal_Aliasing
(Implementation_Base_Type
(E_Id
));
12037 end Universal_Alias
;
12039 --------------------
12040 -- Universal_Data --
12041 --------------------
12043 -- pragma Universal_Data [(library_unit_NAME)];
12045 when Pragma_Universal_Data
=>
12048 -- If this is a configuration pragma, then set the universal
12049 -- addressing option, otherwise confirm that the pragma satisfies
12050 -- the requirements of library unit pragma placement and leave it
12051 -- to the GNAAMP back end to detect the pragma (avoids transitive
12052 -- setting of the option due to withed units).
12054 if Is_Configuration_Pragma
then
12055 Universal_Addressing_On_AAMP
:= True;
12057 Check_Valid_Library_Unit_Pragma
;
12060 if not AAMP_On_Target
then
12061 Error_Pragma
("?pragma% ignored (applies only to AAMP)");
12068 -- pragma Unmodified (local_Name {, local_Name});
12070 when Pragma_Unmodified
=> Unmodified
: declare
12071 Arg_Node
: Node_Id
;
12072 Arg_Expr
: Node_Id
;
12073 Arg_Ent
: Entity_Id
;
12077 Check_At_Least_N_Arguments
(1);
12079 -- Loop through arguments
12082 while Present
(Arg_Node
) loop
12083 Check_No_Identifier
(Arg_Node
);
12085 -- Note: the analyze call done by Check_Arg_Is_Local_Name will
12086 -- in fact generate reference, so that the entity will have a
12087 -- reference, which will inhibit any warnings about it not
12088 -- being referenced, and also properly show up in the ali file
12089 -- as a reference. But this reference is recorded before the
12090 -- Has_Pragma_Unreferenced flag is set, so that no warning is
12091 -- generated for this reference.
12093 Check_Arg_Is_Local_Name
(Arg_Node
);
12094 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
12096 if Is_Entity_Name
(Arg_Expr
) then
12097 Arg_Ent
:= Entity
(Arg_Expr
);
12099 if not Is_Assignable
(Arg_Ent
) then
12101 ("pragma% can only be applied to a variable",
12104 Set_Has_Pragma_Unmodified
(Arg_Ent
);
12116 -- pragma Unreferenced (local_Name {, local_Name});
12118 -- or when used in a context clause:
12120 -- pragma Unreferenced (library_unit_NAME {, library_unit_NAME}
12122 when Pragma_Unreferenced
=> Unreferenced
: declare
12123 Arg_Node
: Node_Id
;
12124 Arg_Expr
: Node_Id
;
12125 Arg_Ent
: Entity_Id
;
12130 Check_At_Least_N_Arguments
(1);
12132 -- Check case of appearing within context clause
12134 if Is_In_Context_Clause
then
12136 -- The arguments must all be units mentioned in a with clause
12137 -- in the same context clause. Note we already checked (in
12138 -- Par.Prag) that the arguments are either identifiers or
12139 -- selected components.
12142 while Present
(Arg_Node
) loop
12143 Citem
:= First
(List_Containing
(N
));
12144 while Citem
/= N
loop
12145 if Nkind
(Citem
) = N_With_Clause
12146 and then Same_Name
(Name
(Citem
), Expression
(Arg_Node
))
12148 Set_Has_Pragma_Unreferenced
12151 (Library_Unit
(Citem
))));
12152 Set_Unit_Name
(Expression
(Arg_Node
), Name
(Citem
));
12161 ("argument of pragma% is not with'ed unit", Arg_Node
);
12167 -- Case of not in list of context items
12171 while Present
(Arg_Node
) loop
12172 Check_No_Identifier
(Arg_Node
);
12174 -- Note: the analyze call done by Check_Arg_Is_Local_Name
12175 -- will in fact generate reference, so that the entity will
12176 -- have a reference, which will inhibit any warnings about
12177 -- it not being referenced, and also properly show up in the
12178 -- ali file as a reference. But this reference is recorded
12179 -- before the Has_Pragma_Unreferenced flag is set, so that
12180 -- no warning is generated for this reference.
12182 Check_Arg_Is_Local_Name
(Arg_Node
);
12183 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
12185 if Is_Entity_Name
(Arg_Expr
) then
12186 Arg_Ent
:= Entity
(Arg_Expr
);
12188 -- If the entity is overloaded, the pragma applies to the
12189 -- most recent overloading, as documented. In this case,
12190 -- name resolution does not generate a reference, so it
12191 -- must be done here explicitly.
12193 if Is_Overloaded
(Arg_Expr
) then
12194 Generate_Reference
(Arg_Ent
, N
);
12197 Set_Has_Pragma_Unreferenced
(Arg_Ent
);
12205 --------------------------
12206 -- Unreferenced_Objects --
12207 --------------------------
12209 -- pragma Unreferenced_Objects (local_Name {, local_Name});
12211 when Pragma_Unreferenced_Objects
=> Unreferenced_Objects
: declare
12212 Arg_Node
: Node_Id
;
12213 Arg_Expr
: Node_Id
;
12217 Check_At_Least_N_Arguments
(1);
12220 while Present
(Arg_Node
) loop
12221 Check_No_Identifier
(Arg_Node
);
12222 Check_Arg_Is_Local_Name
(Arg_Node
);
12223 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
12225 if not Is_Entity_Name
(Arg_Expr
)
12226 or else not Is_Type
(Entity
(Arg_Expr
))
12229 ("argument for pragma% must be type or subtype", Arg_Node
);
12232 Set_Has_Pragma_Unreferenced_Objects
(Entity
(Arg_Expr
));
12235 end Unreferenced_Objects
;
12237 ------------------------------
12238 -- Unreserve_All_Interrupts --
12239 ------------------------------
12241 -- pragma Unreserve_All_Interrupts;
12243 when Pragma_Unreserve_All_Interrupts
=>
12245 Check_Arg_Count
(0);
12247 if In_Extended_Main_Code_Unit
(Main_Unit_Entity
) then
12248 Unreserve_All_Interrupts
:= True;
12255 -- pragma Unsuppress (IDENTIFIER [, [On =>] NAME]);
12257 when Pragma_Unsuppress
=>
12259 Process_Suppress_Unsuppress
(False);
12261 -------------------
12262 -- Use_VADS_Size --
12263 -------------------
12265 -- pragma Use_VADS_Size;
12267 when Pragma_Use_VADS_Size
=>
12269 Check_Arg_Count
(0);
12270 Check_Valid_Configuration_Pragma
;
12271 Use_VADS_Size
:= True;
12273 ---------------------
12274 -- Validity_Checks --
12275 ---------------------
12277 -- pragma Validity_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
12279 when Pragma_Validity_Checks
=> Validity_Checks
: declare
12280 A
: constant Node_Id
:= Expression
(Arg1
);
12286 Check_Arg_Count
(1);
12287 Check_No_Identifiers
;
12289 if Nkind
(A
) = N_String_Literal
then
12293 Slen
: constant Natural := Natural (String_Length
(S
));
12294 Options
: String (1 .. Slen
);
12300 C
:= Get_String_Char
(S
, Int
(J
));
12301 exit when not In_Character_Range
(C
);
12302 Options
(J
) := Get_Character
(C
);
12305 Set_Validity_Check_Options
(Options
);
12313 elsif Nkind
(A
) = N_Identifier
then
12315 if Chars
(A
) = Name_All_Checks
then
12316 Set_Validity_Check_Options
("a");
12318 elsif Chars
(A
) = Name_On
then
12319 Validity_Checks_On
:= True;
12321 elsif Chars
(A
) = Name_Off
then
12322 Validity_Checks_On
:= False;
12326 end Validity_Checks
;
12332 -- pragma Volatile (LOCAL_NAME);
12334 when Pragma_Volatile
=>
12335 Process_Atomic_Shared_Volatile
;
12337 -------------------------
12338 -- Volatile_Components --
12339 -------------------------
12341 -- pragma Volatile_Components (array_LOCAL_NAME);
12343 -- Volatile is handled by the same circuit as Atomic_Components
12349 -- pragma Warnings (On | Off);
12350 -- pragma Warnings (On | Off, LOCAL_NAME);
12351 -- pragma Warnings (static_string_EXPRESSION);
12352 -- pragma Warnings (On | Off, STRING_LITERAL);
12354 when Pragma_Warnings
=> Warnings
: begin
12356 Check_At_Least_N_Arguments
(1);
12357 Check_No_Identifiers
;
12359 -- If debug flag -gnatd.i is set, pragma is ignored
12361 if Debug_Flag_Dot_I
then
12365 -- Process various forms of the pragma
12368 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
12371 -- One argument case
12373 if Arg_Count
= 1 then
12375 -- On/Off one argument case was processed by parser
12377 if Nkind
(Argx
) = N_Identifier
12379 (Chars
(Argx
) = Name_On
12381 Chars
(Argx
) = Name_Off
)
12385 -- One argument case must be ON/OFF or static string expr
12387 elsif not Is_Static_String_Expression
(Arg1
) then
12389 ("argument of pragma% must be On/Off or " &
12390 "static string expression", Arg1
);
12392 -- One argument string expression case
12396 Lit
: constant Node_Id
:= Expr_Value_S
(Argx
);
12397 Str
: constant String_Id
:= Strval
(Lit
);
12398 Len
: constant Nat
:= String_Length
(Str
);
12406 while J
<= Len
loop
12407 C
:= Get_String_Char
(Str
, J
);
12408 OK
:= In_Character_Range
(C
);
12411 Chr
:= Get_Character
(C
);
12415 if J
< Len
and then Chr
= '.' then
12417 C
:= Get_String_Char
(Str
, J
);
12418 Chr
:= Get_Character
(C
);
12420 if not Set_Dot_Warning_Switch
(Chr
) then
12422 ("invalid warning switch character " &
12429 OK
:= Set_Warning_Switch
(Chr
);
12435 ("invalid warning switch character " & Chr
,
12444 -- Two or more arguments (must be two)
12447 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
12448 Check_At_Most_N_Arguments
(2);
12456 E_Id
:= Expression
(Arg2
);
12459 -- In the expansion of an inlined body, a reference to
12460 -- the formal may be wrapped in a conversion if the
12461 -- actual is a conversion. Retrieve the real entity name.
12463 if (In_Instance_Body
12464 or else In_Inlined_Body
)
12465 and then Nkind
(E_Id
) = N_Unchecked_Type_Conversion
12467 E_Id
:= Expression
(E_Id
);
12470 -- Entity name case
12472 if Is_Entity_Name
(E_Id
) then
12473 E
:= Entity
(E_Id
);
12480 (E
, (Chars
(Expression
(Arg1
)) = Name_Off
));
12482 if Chars
(Expression
(Arg1
)) = Name_Off
12483 and then Warn_On_Warnings_Off
12485 Warnings_Off_Pragmas
.Append
((N
, E
));
12488 if Is_Enumeration_Type
(E
) then
12492 Lit
:= First_Literal
(E
);
12493 while Present
(Lit
) loop
12494 Set_Warnings_Off
(Lit
);
12495 Next_Literal
(Lit
);
12500 exit when No
(Homonym
(E
));
12505 -- Error if not entity or static string literal case
12507 elsif not Is_Static_String_Expression
(Arg2
) then
12509 ("second argument of pragma% must be entity " &
12510 "name or static string expression", Arg2
);
12512 -- String literal case
12515 String_To_Name_Buffer
12516 (Strval
(Expr_Value_S
(Expression
(Arg2
))));
12518 -- Note on configuration pragma case: If this is a
12519 -- configuration pragma, then for an OFF pragma, we
12520 -- just set Config True in the call, which is all
12521 -- that needs to be done. For the case of ON, this
12522 -- is normally an error, unless it is canceling the
12523 -- effect of a previous OFF pragma in the same file.
12524 -- In any other case, an error will be signalled (ON
12525 -- with no matching OFF).
12527 if Chars
(Argx
) = Name_Off
then
12528 Set_Specific_Warning_Off
12529 (Loc
, Name_Buffer
(1 .. Name_Len
),
12530 Config
=> Is_Configuration_Pragma
);
12532 elsif Chars
(Argx
) = Name_On
then
12533 Set_Specific_Warning_On
12534 (Loc
, Name_Buffer
(1 .. Name_Len
), Err
);
12538 ("?pragma Warnings On with no " &
12539 "matching Warnings Off",
12549 -------------------
12550 -- Weak_External --
12551 -------------------
12553 -- pragma Weak_External ([Entity =>] LOCAL_NAME);
12555 when Pragma_Weak_External
=> Weak_External
: declare
12560 Check_Arg_Count
(1);
12561 Check_Optional_Identifier
(Arg1
, Name_Entity
);
12562 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
12563 Ent
:= Entity
(Expression
(Arg1
));
12565 if Rep_Item_Too_Early
(Ent
, N
) then
12568 Ent
:= Underlying_Type
(Ent
);
12571 -- The only processing required is to link this item on to the
12572 -- list of rep items for the given entity. This is accomplished
12573 -- by the call to Rep_Item_Too_Late (when no error is detected
12574 -- and False is returned).
12576 if Rep_Item_Too_Late
(Ent
, N
) then
12579 Set_Has_Gigi_Rep_Item
(Ent
);
12583 -----------------------------
12584 -- Wide_Character_Encoding --
12585 -----------------------------
12587 -- pragma Wide_Character_Encoding (IDENTIFIER);
12589 when Pragma_Wide_Character_Encoding
=>
12592 -- Nothing to do, handled in parser. Note that we do not enforce
12593 -- configuration pragma placement, this pragma can appear at any
12594 -- place in the source, allowing mixed encodings within a single
12599 --------------------
12600 -- Unknown_Pragma --
12601 --------------------
12603 -- Should be impossible, since the case of an unknown pragma is
12604 -- separately processed before the case statement is entered.
12606 when Unknown_Pragma
=>
12607 raise Program_Error
;
12610 -- AI05-0144: detect dangerous order dependence. Disabled for now,
12611 -- until AI is formally approved.
12613 -- Check_Order_Dependence;
12616 when Pragma_Exit
=> null;
12617 end Analyze_Pragma
;
12619 -------------------
12620 -- Check_Enabled --
12621 -------------------
12623 function Check_Enabled
(Nam
: Name_Id
) return Boolean is
12627 PP
:= Opt
.Check_Policy_List
;
12630 return Assertions_Enabled
;
12633 Nam
= Chars
(Expression
(First
(Pragma_Argument_Associations
(PP
))))
12636 Chars
(Expression
(Last
(Pragma_Argument_Associations
(PP
))))
12638 when Name_On | Name_Check
=>
12640 when Name_Off | Name_Ignore
=>
12643 raise Program_Error
;
12647 PP
:= Next_Pragma
(PP
);
12652 ---------------------------------
12653 -- Delay_Config_Pragma_Analyze --
12654 ---------------------------------
12656 function Delay_Config_Pragma_Analyze
(N
: Node_Id
) return Boolean is
12658 return Pragma_Name
(N
) = Name_Interrupt_State
12660 Pragma_Name
(N
) = Name_Priority_Specific_Dispatching
;
12661 end Delay_Config_Pragma_Analyze
;
12663 -------------------------
12664 -- Get_Base_Subprogram --
12665 -------------------------
12667 function Get_Base_Subprogram
(Def_Id
: Entity_Id
) return Entity_Id
is
12668 Result
: Entity_Id
;
12671 -- Follow subprogram renaming chain
12674 while Is_Subprogram
(Result
)
12676 (Is_Generic_Instance
(Result
)
12677 or else Nkind
(Parent
(Declaration_Node
(Result
))) =
12678 N_Subprogram_Renaming_Declaration
)
12679 and then Present
(Alias
(Result
))
12681 Result
:= Alias
(Result
);
12685 end Get_Base_Subprogram
;
12687 --------------------
12688 -- Get_Pragma_Arg --
12689 --------------------
12691 function Get_Pragma_Arg
(Arg
: Node_Id
) return Node_Id
is
12693 if Nkind
(Arg
) = N_Pragma_Argument_Association
then
12694 return Expression
(Arg
);
12698 end Get_Pragma_Arg
;
12704 procedure Initialize
is
12709 -----------------------------
12710 -- Is_Config_Static_String --
12711 -----------------------------
12713 function Is_Config_Static_String
(Arg
: Node_Id
) return Boolean is
12715 function Add_Config_Static_String
(Arg
: Node_Id
) return Boolean;
12716 -- This is an internal recursive function that is just like the outer
12717 -- function except that it adds the string to the name buffer rather
12718 -- than placing the string in the name buffer.
12720 ------------------------------
12721 -- Add_Config_Static_String --
12722 ------------------------------
12724 function Add_Config_Static_String
(Arg
: Node_Id
) return Boolean is
12731 if Nkind
(N
) = N_Op_Concat
then
12732 if Add_Config_Static_String
(Left_Opnd
(N
)) then
12733 N
:= Right_Opnd
(N
);
12739 if Nkind
(N
) /= N_String_Literal
then
12740 Error_Msg_N
("string literal expected for pragma argument", N
);
12744 for J
in 1 .. String_Length
(Strval
(N
)) loop
12745 C
:= Get_String_Char
(Strval
(N
), J
);
12747 if not In_Character_Range
(C
) then
12749 ("string literal contains invalid wide character",
12750 Sloc
(N
) + 1 + Source_Ptr
(J
));
12754 Add_Char_To_Name_Buffer
(Get_Character
(C
));
12759 end Add_Config_Static_String
;
12761 -- Start of processing for Is_Config_Static_String
12766 return Add_Config_Static_String
(Arg
);
12767 end Is_Config_Static_String
;
12769 -----------------------------------------
12770 -- Is_Non_Significant_Pragma_Reference --
12771 -----------------------------------------
12773 -- This function makes use of the following static table which indicates
12774 -- whether a given pragma is significant.
12776 -- -1 indicates that references in any argument position are significant
12777 -- 0 indicates that appearence in any argument is not significant
12778 -- +n indicates that appearence as argument n is significant, but all
12779 -- other arguments are not significant
12780 -- 99 special processing required (e.g. for pragma Check)
12782 Sig_Flags
: constant array (Pragma_Id
) of Int
:=
12783 (Pragma_AST_Entry
=> -1,
12784 Pragma_Abort_Defer
=> -1,
12785 Pragma_Ada_83
=> -1,
12786 Pragma_Ada_95
=> -1,
12787 Pragma_Ada_05
=> -1,
12788 Pragma_Ada_2005
=> -1,
12789 Pragma_Ada_12
=> -1,
12790 Pragma_Ada_2012
=> -1,
12791 Pragma_All_Calls_Remote
=> -1,
12792 Pragma_Annotate
=> -1,
12793 Pragma_Assert
=> -1,
12794 Pragma_Assertion_Policy
=> 0,
12795 Pragma_Assume_No_Invalid_Values
=> 0,
12796 Pragma_Asynchronous
=> -1,
12797 Pragma_Atomic
=> 0,
12798 Pragma_Atomic_Components
=> 0,
12799 Pragma_Attach_Handler
=> -1,
12800 Pragma_Check
=> 99,
12801 Pragma_Check_Name
=> 0,
12802 Pragma_Check_Policy
=> 0,
12803 Pragma_CIL_Constructor
=> -1,
12804 Pragma_CPP_Class
=> 0,
12805 Pragma_CPP_Constructor
=> 0,
12806 Pragma_CPP_Virtual
=> 0,
12807 Pragma_CPP_Vtable
=> 0,
12808 Pragma_C_Pass_By_Copy
=> 0,
12809 Pragma_Comment
=> 0,
12810 Pragma_Common_Object
=> -1,
12811 Pragma_Compile_Time_Error
=> -1,
12812 Pragma_Compile_Time_Warning
=> -1,
12813 Pragma_Compiler_Unit
=> 0,
12814 Pragma_Complete_Representation
=> 0,
12815 Pragma_Complex_Representation
=> 0,
12816 Pragma_Component_Alignment
=> -1,
12817 Pragma_Controlled
=> 0,
12818 Pragma_Convention
=> 0,
12819 Pragma_Convention_Identifier
=> 0,
12820 Pragma_Debug
=> -1,
12821 Pragma_Debug_Policy
=> 0,
12822 Pragma_Detect_Blocking
=> -1,
12823 Pragma_Dimension
=> -1,
12824 Pragma_Discard_Names
=> 0,
12825 Pragma_Elaborate
=> -1,
12826 Pragma_Elaborate_All
=> -1,
12827 Pragma_Elaborate_Body
=> -1,
12828 Pragma_Elaboration_Checks
=> -1,
12829 Pragma_Eliminate
=> -1,
12830 Pragma_Export
=> -1,
12831 Pragma_Export_Exception
=> -1,
12832 Pragma_Export_Function
=> -1,
12833 Pragma_Export_Object
=> -1,
12834 Pragma_Export_Procedure
=> -1,
12835 Pragma_Export_Value
=> -1,
12836 Pragma_Export_Valued_Procedure
=> -1,
12837 Pragma_Extend_System
=> -1,
12838 Pragma_Extensions_Allowed
=> -1,
12839 Pragma_External
=> -1,
12840 Pragma_Favor_Top_Level
=> -1,
12841 Pragma_External_Name_Casing
=> -1,
12842 Pragma_Fast_Math
=> -1,
12843 Pragma_Finalize_Storage_Only
=> 0,
12844 Pragma_Float_Representation
=> 0,
12845 Pragma_Ident
=> -1,
12846 Pragma_Implemented_By_Entry
=> -1,
12847 Pragma_Implicit_Packing
=> 0,
12848 Pragma_Import
=> +2,
12849 Pragma_Import_Exception
=> 0,
12850 Pragma_Import_Function
=> 0,
12851 Pragma_Import_Object
=> 0,
12852 Pragma_Import_Procedure
=> 0,
12853 Pragma_Import_Valued_Procedure
=> 0,
12854 Pragma_Initialize_Scalars
=> -1,
12855 Pragma_Inline
=> 0,
12856 Pragma_Inline_Always
=> 0,
12857 Pragma_Inline_Generic
=> 0,
12858 Pragma_Inspection_Point
=> -1,
12859 Pragma_Interface
=> +2,
12860 Pragma_Interface_Name
=> +2,
12861 Pragma_Interrupt_Handler
=> -1,
12862 Pragma_Interrupt_Priority
=> -1,
12863 Pragma_Interrupt_State
=> -1,
12864 Pragma_Java_Constructor
=> -1,
12865 Pragma_Java_Interface
=> -1,
12866 Pragma_Keep_Names
=> 0,
12867 Pragma_License
=> -1,
12868 Pragma_Link_With
=> -1,
12869 Pragma_Linker_Alias
=> -1,
12870 Pragma_Linker_Constructor
=> -1,
12871 Pragma_Linker_Destructor
=> -1,
12872 Pragma_Linker_Options
=> -1,
12873 Pragma_Linker_Section
=> -1,
12875 Pragma_Locking_Policy
=> -1,
12876 Pragma_Long_Float
=> -1,
12877 Pragma_Machine_Attribute
=> -1,
12879 Pragma_Main_Storage
=> -1,
12880 Pragma_Memory_Size
=> -1,
12881 Pragma_No_Return
=> 0,
12882 Pragma_No_Body
=> 0,
12883 Pragma_No_Run_Time
=> -1,
12884 Pragma_No_Strict_Aliasing
=> -1,
12885 Pragma_Normalize_Scalars
=> -1,
12886 Pragma_Obsolescent
=> 0,
12887 Pragma_Optimize
=> -1,
12888 Pragma_Optimize_Alignment
=> -1,
12889 Pragma_Ordered
=> 0,
12892 Pragma_Passive
=> -1,
12893 Pragma_Preelaborable_Initialization
=> -1,
12894 Pragma_Polling
=> -1,
12895 Pragma_Persistent_BSS
=> 0,
12896 Pragma_Postcondition
=> -1,
12897 Pragma_Precondition
=> -1,
12898 Pragma_Preelaborate
=> -1,
12899 Pragma_Preelaborate_05
=> -1,
12900 Pragma_Priority
=> -1,
12901 Pragma_Priority_Specific_Dispatching
=> -1,
12902 Pragma_Profile
=> 0,
12903 Pragma_Profile_Warnings
=> 0,
12904 Pragma_Propagate_Exceptions
=> -1,
12905 Pragma_Psect_Object
=> -1,
12907 Pragma_Pure_05
=> -1,
12908 Pragma_Pure_Function
=> -1,
12909 Pragma_Queuing_Policy
=> -1,
12910 Pragma_Ravenscar
=> -1,
12911 Pragma_Relative_Deadline
=> -1,
12912 Pragma_Remote_Call_Interface
=> -1,
12913 Pragma_Remote_Types
=> -1,
12914 Pragma_Restricted_Run_Time
=> -1,
12915 Pragma_Restriction_Warnings
=> -1,
12916 Pragma_Restrictions
=> -1,
12917 Pragma_Reviewable
=> -1,
12918 Pragma_Short_Circuit_And_Or
=> -1,
12919 Pragma_Share_Generic
=> -1,
12920 Pragma_Shared
=> -1,
12921 Pragma_Shared_Passive
=> -1,
12922 Pragma_Short_Descriptors
=> 0,
12923 Pragma_Source_File_Name
=> -1,
12924 Pragma_Source_File_Name_Project
=> -1,
12925 Pragma_Source_Reference
=> -1,
12926 Pragma_Storage_Size
=> -1,
12927 Pragma_Storage_Unit
=> -1,
12928 Pragma_Static_Elaboration_Desired
=> -1,
12929 Pragma_Stream_Convert
=> -1,
12930 Pragma_Style_Checks
=> -1,
12931 Pragma_Subtitle
=> -1,
12932 Pragma_Suppress
=> 0,
12933 Pragma_Suppress_Exception_Locations
=> 0,
12934 Pragma_Suppress_All
=> -1,
12935 Pragma_Suppress_Debug_Info
=> 0,
12936 Pragma_Suppress_Initialization
=> 0,
12937 Pragma_System_Name
=> -1,
12938 Pragma_Task_Dispatching_Policy
=> -1,
12939 Pragma_Task_Info
=> -1,
12940 Pragma_Task_Name
=> -1,
12941 Pragma_Task_Storage
=> 0,
12942 Pragma_Thread_Local_Storage
=> 0,
12943 Pragma_Time_Slice
=> -1,
12944 Pragma_Title
=> -1,
12945 Pragma_Unchecked_Union
=> 0,
12946 Pragma_Unimplemented_Unit
=> -1,
12947 Pragma_Universal_Aliasing
=> -1,
12948 Pragma_Universal_Data
=> -1,
12949 Pragma_Unmodified
=> -1,
12950 Pragma_Unreferenced
=> -1,
12951 Pragma_Unreferenced_Objects
=> -1,
12952 Pragma_Unreserve_All_Interrupts
=> -1,
12953 Pragma_Unsuppress
=> 0,
12954 Pragma_Use_VADS_Size
=> -1,
12955 Pragma_Validity_Checks
=> -1,
12956 Pragma_Volatile
=> 0,
12957 Pragma_Volatile_Components
=> 0,
12958 Pragma_Warnings
=> -1,
12959 Pragma_Weak_External
=> -1,
12960 Pragma_Wide_Character_Encoding
=> 0,
12961 Unknown_Pragma
=> 0);
12963 function Is_Non_Significant_Pragma_Reference
(N
: Node_Id
) return Boolean is
12972 if Nkind
(P
) /= N_Pragma_Argument_Association
then
12976 Id
:= Get_Pragma_Id
(Parent
(P
));
12977 C
:= Sig_Flags
(Id
);
12989 -- For pragma Check, the first argument is not significant,
12990 -- the second and the third (if present) arguments are
12993 when Pragma_Check
=>
12995 P
= First
(Pragma_Argument_Associations
(Parent
(P
)));
12998 raise Program_Error
;
13002 A
:= First
(Pragma_Argument_Associations
(Parent
(P
)));
13003 for J
in 1 .. C
- 1 loop
13011 return A
= P
; -- is this wrong way round ???
13014 end Is_Non_Significant_Pragma_Reference
;
13016 ------------------------------
13017 -- Is_Pragma_String_Literal --
13018 ------------------------------
13020 -- This function returns true if the corresponding pragma argument is a
13021 -- static string expression. These are the only cases in which string
13022 -- literals can appear as pragma arguments. We also allow a string literal
13023 -- as the first argument to pragma Assert (although it will of course
13024 -- always generate a type error).
13026 function Is_Pragma_String_Literal
(Par
: Node_Id
) return Boolean is
13027 Pragn
: constant Node_Id
:= Parent
(Par
);
13028 Assoc
: constant List_Id
:= Pragma_Argument_Associations
(Pragn
);
13029 Pname
: constant Name_Id
:= Pragma_Name
(Pragn
);
13035 N
:= First
(Assoc
);
13042 if Pname
= Name_Assert
then
13045 elsif Pname
= Name_Export
then
13048 elsif Pname
= Name_Ident
then
13051 elsif Pname
= Name_Import
then
13054 elsif Pname
= Name_Interface_Name
then
13057 elsif Pname
= Name_Linker_Alias
then
13060 elsif Pname
= Name_Linker_Section
then
13063 elsif Pname
= Name_Machine_Attribute
then
13066 elsif Pname
= Name_Source_File_Name
then
13069 elsif Pname
= Name_Source_Reference
then
13072 elsif Pname
= Name_Title
then
13075 elsif Pname
= Name_Subtitle
then
13081 end Is_Pragma_String_Literal
;
13083 --------------------------------------
13084 -- Process_Compilation_Unit_Pragmas --
13085 --------------------------------------
13087 procedure Process_Compilation_Unit_Pragmas
(N
: Node_Id
) is
13089 -- A special check for pragma Suppress_All, a very strange DEC pragma,
13090 -- strange because it comes at the end of the unit. If we have a pragma
13091 -- Suppress_All in the Pragmas_After of the current unit, then we insert
13092 -- a pragma Suppress (All_Checks) at the start of the context clause to
13093 -- ensure the correct processing.
13096 PA
: constant List_Id
:= Pragmas_After
(Aux_Decls_Node
(N
));
13100 if Present
(PA
) then
13102 while Present
(P
) loop
13103 if Pragma_Name
(P
) = Name_Suppress_All
then
13104 Prepend_To
(Context_Items
(N
),
13105 Make_Pragma
(Sloc
(P
),
13106 Chars
=> Name_Suppress
,
13107 Pragma_Argument_Associations
=> New_List
(
13108 Make_Pragma_Argument_Association
(Sloc
(P
),
13110 Make_Identifier
(Sloc
(P
),
13111 Chars
=> Name_All_Checks
)))));
13119 end Process_Compilation_Unit_Pragmas
;
13130 --------------------------------
13131 -- Set_Encoded_Interface_Name --
13132 --------------------------------
13134 procedure Set_Encoded_Interface_Name
(E
: Entity_Id
; S
: Node_Id
) is
13135 Str
: constant String_Id
:= Strval
(S
);
13136 Len
: constant Int
:= String_Length
(Str
);
13141 Hex
: constant array (0 .. 15) of Character := "0123456789abcdef";
13144 -- Stores encoded value of character code CC. The encoding we use an
13145 -- underscore followed by four lower case hex digits.
13151 procedure Encode
is
13153 Store_String_Char
(Get_Char_Code
('_'));
13155 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 12))));
13157 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 8 and 16#
0F#
))));
13159 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 4 and 16#
0F#
))));
13161 (Get_Char_Code
(Hex
(Integer (CC
and 16#
0F#
))));
13164 -- Start of processing for Set_Encoded_Interface_Name
13167 -- If first character is asterisk, this is a link name, and we leave it
13168 -- completely unmodified. We also ignore null strings (the latter case
13169 -- happens only in error cases) and no encoding should occur for Java or
13170 -- AAMP interface names.
13173 or else Get_String_Char
(Str
, 1) = Get_Char_Code
('*')
13174 or else VM_Target
/= No_VM
13175 or else AAMP_On_Target
13177 Set_Interface_Name
(E
, S
);
13182 CC
:= Get_String_Char
(Str
, J
);
13184 exit when not In_Character_Range
(CC
);
13186 C
:= Get_Character
(CC
);
13188 exit when C
/= '_' and then C
/= '$'
13189 and then C
not in '0' .. '9'
13190 and then C
not in 'a' .. 'z'
13191 and then C
not in 'A' .. 'Z';
13194 Set_Interface_Name
(E
, S
);
13202 -- Here we need to encode. The encoding we use as follows:
13203 -- three underscores + four hex digits (lower case)
13207 for J
in 1 .. String_Length
(Str
) loop
13208 CC
:= Get_String_Char
(Str
, J
);
13210 if not In_Character_Range
(CC
) then
13213 C
:= Get_Character
(CC
);
13215 if C
= '_' or else C
= '$'
13216 or else C
in '0' .. '9'
13217 or else C
in 'a' .. 'z'
13218 or else C
in 'A' .. 'Z'
13220 Store_String_Char
(CC
);
13227 Set_Interface_Name
(E
,
13228 Make_String_Literal
(Sloc
(S
),
13229 Strval
=> End_String
));
13231 end Set_Encoded_Interface_Name
;
13233 -------------------
13234 -- Set_Unit_Name --
13235 -------------------
13237 procedure Set_Unit_Name
(N
: Node_Id
; With_Item
: Node_Id
) is
13242 if Nkind
(N
) = N_Identifier
13243 and then Nkind
(With_Item
) = N_Identifier
13245 Set_Entity
(N
, Entity
(With_Item
));
13247 elsif Nkind
(N
) = N_Selected_Component
then
13248 Change_Selected_Component_To_Expanded_Name
(N
);
13249 Set_Entity
(N
, Entity
(With_Item
));
13250 Set_Entity
(Selector_Name
(N
), Entity
(N
));
13252 Pref
:= Prefix
(N
);
13253 Scop
:= Scope
(Entity
(N
));
13254 while Nkind
(Pref
) = N_Selected_Component
loop
13255 Change_Selected_Component_To_Expanded_Name
(Pref
);
13256 Set_Entity
(Selector_Name
(Pref
), Scop
);
13257 Set_Entity
(Pref
, Scop
);
13258 Pref
:= Prefix
(Pref
);
13259 Scop
:= Scope
(Scop
);
13262 Set_Entity
(Pref
, Scop
);