1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2004, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 -- This unit contains the semantic processing for all pragmas, both language
28 -- and implementation defined. For most pragmas, the parser only does the
29 -- most basic job of checking the syntax, so Sem_Prag also contains the code
30 -- to complete the syntax checks. Certain pragmas are handled partially or
31 -- completely by the parser (see Par.Prag for further details).
33 with Atree
; use Atree
;
34 with Casing
; use Casing
;
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 Expander
; use Expander
;
41 with Exp_Dist
; use Exp_Dist
;
42 with Fname
; use Fname
;
43 with Hostparm
; use Hostparm
;
45 with Lib
.Writ
; use Lib
.Writ
;
46 with Lib
.Xref
; use Lib
.Xref
;
47 with Namet
; use Namet
;
48 with Nlists
; use Nlists
;
49 with Nmake
; use Nmake
;
51 with Output
; use Output
;
52 with Restrict
; use Restrict
;
53 with Rident
; use Rident
;
54 with Rtsfind
; use Rtsfind
;
56 with Sem_Ch3
; use Sem_Ch3
;
57 with Sem_Ch8
; use Sem_Ch8
;
58 with Sem_Ch13
; use Sem_Ch13
;
59 with Sem_Disp
; use Sem_Disp
;
60 with Sem_Elim
; use Sem_Elim
;
61 with Sem_Eval
; use Sem_Eval
;
62 with Sem_Intr
; use Sem_Intr
;
63 with Sem_Mech
; use Sem_Mech
;
64 with Sem_Res
; use Sem_Res
;
65 with Sem_Type
; use Sem_Type
;
66 with Sem_Util
; use Sem_Util
;
67 with Sem_VFpt
; use Sem_VFpt
;
68 with Stand
; use Stand
;
69 with Sinfo
; use Sinfo
;
70 with Sinfo
.CN
; use Sinfo
.CN
;
71 with Sinput
; use Sinput
;
72 with Snames
; use Snames
;
73 with Stringt
; use Stringt
;
74 with Stylesw
; use Stylesw
;
76 with Targparm
; use Targparm
;
77 with Tbuild
; use Tbuild
;
79 with Uintp
; use Uintp
;
80 with Urealp
; use Urealp
;
81 with Validsw
; use Validsw
;
83 with GNAT
.Spelling_Checker
; use GNAT
.Spelling_Checker
;
85 package body Sem_Prag
is
87 ----------------------------------------------
88 -- Common Handling of Import-Export Pragmas --
89 ----------------------------------------------
91 -- In the following section, a number of Import_xxx and Export_xxx
92 -- pragmas are defined by GNAT. These are compatible with the DEC
93 -- pragmas of the same name, and all have the following common
94 -- form and processing:
97 -- [Internal =>] LOCAL_NAME,
98 -- [, [External =>] EXTERNAL_SYMBOL]
99 -- [, other optional parameters ]);
102 -- [Internal =>] LOCAL_NAME,
103 -- [, [External =>] EXTERNAL_SYMBOL]
104 -- [, other optional parameters ]);
106 -- EXTERNAL_SYMBOL ::=
108 -- | static_string_EXPRESSION
110 -- The internal LOCAL_NAME designates the entity that is imported or
111 -- exported, and must refer to an entity in the current declarative
112 -- part (as required by the rules for LOCAL_NAME).
114 -- The external linker name is designated by the External parameter
115 -- if given, or the Internal parameter if not (if there is no External
116 -- parameter, the External parameter is a copy of the Internal name).
118 -- If the External parameter is given as a string, then this string
119 -- is treated as an external name (exactly as though it had been given
120 -- as an External_Name parameter for a normal Import pragma).
122 -- If the External parameter is given as an identifier (or there is no
123 -- External parameter, so that the Internal identifier is used), then
124 -- the external name is the characters of the identifier, translated
125 -- to all upper case letters for OpenVMS versions of GNAT, and to all
126 -- lower case letters for all other versions
128 -- Note: the external name specified or implied by any of these special
129 -- Import_xxx or Export_xxx pragmas override an external or link name
130 -- specified in a previous Import or Export pragma.
132 -- Note: these and all other DEC-compatible GNAT pragmas allow full
133 -- use of named notation, following the standard rules for subprogram
134 -- calls, i.e. parameters can be given in any order if named notation
135 -- is used, and positional and named notation can be mixed, subject to
136 -- the rule that all positional parameters must appear first.
138 -- Note: All these pragmas are implemented exactly following the DEC
139 -- design and implementation and are intended to be fully compatible
140 -- with the use of these pragmas in the DEC Ada compiler.
142 --------------------------------------------
143 -- Checking for Duplicated External Names --
144 --------------------------------------------
146 -- It is suspicious if two separate Export pragmas use the same external
147 -- name. The following table is used to diagnose this situation so that
148 -- an appropriate warning can be issued.
150 -- The Node_Id stored is for the N_String_Literal node created to
151 -- hold the value of the external name. The Sloc of this node is
152 -- used to cross-reference the location of the duplication.
154 package Externals
is new Table
.Table
(
155 Table_Component_Type
=> Node_Id
,
156 Table_Index_Type
=> Int
,
157 Table_Low_Bound
=> 0,
158 Table_Initial
=> 100,
159 Table_Increment
=> 100,
160 Table_Name
=> "Name_Externals");
162 -------------------------------------
163 -- Local Subprograms and Variables --
164 -------------------------------------
166 function Adjust_External_Name_Case
(N
: Node_Id
) return Node_Id
;
167 -- This routine is used for possible casing adjustment of an explicit
168 -- external name supplied as a string literal (the node N), according
169 -- to the casing requirement of Opt.External_Name_Casing. If this is
170 -- set to As_Is, then the string literal is returned unchanged, but if
171 -- it is set to Uppercase or Lowercase, then a new string literal with
172 -- appropriate casing is constructed.
174 function Get_Base_Subprogram
(Def_Id
: Entity_Id
) return Entity_Id
;
175 -- If Def_Id refers to a renamed subprogram, then the base subprogram
176 -- (the original one, following the renaming chain) is returned.
177 -- Otherwise the entity is returned unchanged. Should be in Einfo???
179 procedure Set_Unit_Name
(N
: Node_Id
; With_Item
: Node_Id
);
180 -- Place semantic information on the argument of an Elaborate or
181 -- Elaborate_All pragma. Entity name for unit and its parents is
182 -- taken from item in previous with_clause that mentions the unit.
184 -------------------------------
185 -- Adjust_External_Name_Case --
186 -------------------------------
188 function Adjust_External_Name_Case
(N
: Node_Id
) return Node_Id
is
192 -- Adjust case of literal if required
194 if Opt
.External_Name_Exp_Casing
= As_Is
then
198 -- Copy existing string
204 for J
in 1 .. String_Length
(Strval
(N
)) loop
205 CC
:= Get_String_Char
(Strval
(N
), J
);
207 if Opt
.External_Name_Exp_Casing
= Uppercase
208 and then CC
>= Get_Char_Code
('a')
209 and then CC
<= Get_Char_Code
('z')
211 Store_String_Char
(CC
- 32);
213 elsif Opt
.External_Name_Exp_Casing
= Lowercase
214 and then CC
>= Get_Char_Code
('A')
215 and then CC
<= Get_Char_Code
('Z')
217 Store_String_Char
(CC
+ 32);
220 Store_String_Char
(CC
);
225 Make_String_Literal
(Sloc
(N
),
226 Strval
=> End_String
);
228 end Adjust_External_Name_Case
;
234 procedure Analyze_Pragma
(N
: Node_Id
) is
235 Loc
: constant Source_Ptr
:= Sloc
(N
);
238 Pragma_Exit
: exception;
239 -- This exception is used to exit pragma processing completely. It
240 -- is used when an error is detected, and in other situations where
241 -- it is known that no further processing is required.
244 -- Number of pragma argument associations
250 -- First four pragma arguments (pragma argument association nodes,
251 -- or Empty if the corresponding argument does not exist).
253 procedure Check_Ada_83_Warning
;
254 -- Issues a warning message for the current pragma if operating in Ada
255 -- 83 mode (used for language pragmas that are not a standard part of
256 -- Ada 83). This procedure does not raise Error_Pragma. Also notes use
259 procedure Check_Arg_Count
(Required
: Nat
);
260 -- Check argument count for pragma is equal to given parameter.
261 -- If not, then issue an error message and raise Pragma_Exit.
263 -- Note: all routines whose name is Check_Arg_Is_xxx take an
264 -- argument Arg which can either be a pragma argument association,
265 -- in which case the check is applied to the expression of the
266 -- association or an expression directly.
268 procedure Check_Arg_Is_External_Name
(Arg
: Node_Id
);
269 -- Check that an argument has the right form for an EXTERNAL_NAME
270 -- parameter of an extended import/export pragma. The rule is that
271 -- the name must be an identifier or string literal (in Ada 83 mode)
272 -- or a static string expression (in Ada 95 mode).
274 procedure Check_Arg_Is_Identifier
(Arg
: Node_Id
);
275 -- Check the specified argument Arg to make sure that it is an
276 -- identifier. If not give error and raise Pragma_Exit.
278 procedure Check_Arg_Is_Integer_Literal
(Arg
: Node_Id
);
279 -- Check the specified argument Arg to make sure that it is an
280 -- integer literal. If not give error and raise Pragma_Exit.
282 procedure Check_Arg_Is_Library_Level_Local_Name
(Arg
: Node_Id
);
283 -- Check the specified argument Arg to make sure that it has the
284 -- proper syntactic form for a local name and meets the semantic
285 -- requirements for a local name. The local name is analyzed as
286 -- part of the processing for this call. In addition, the local
287 -- name is required to represent an entity at the library level.
289 procedure Check_Arg_Is_Local_Name
(Arg
: Node_Id
);
290 -- Check the specified argument Arg to make sure that it has the
291 -- proper syntactic form for a local name and meets the semantic
292 -- requirements for a local name. The local name is analyzed as
293 -- part of the processing for this call.
295 procedure Check_Arg_Is_Locking_Policy
(Arg
: Node_Id
);
296 -- Check the specified argument Arg to make sure that it is a valid
297 -- locking policy name. If not give error and raise Pragma_Exit.
299 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
: Name_Id
);
300 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
, N3
: Name_Id
);
301 -- Check the specified argument Arg to make sure that it is an
302 -- identifier whose name matches either N1 or N2 (or N3 if present).
303 -- If not then give error and raise Pragma_Exit.
305 procedure Check_Arg_Is_Queuing_Policy
(Arg
: Node_Id
);
306 -- Check the specified argument Arg to make sure that it is a valid
307 -- queuing policy name. If not give error and raise Pragma_Exit.
309 procedure Check_Arg_Is_Static_Expression
312 -- Check the specified argument Arg to make sure that it is a static
313 -- expression of the given type (i.e. it will be analyzed and resolved
314 -- using this type, which can be any valid argument to Resolve, e.g.
315 -- Any_Integer is OK). If not, given error and raise Pragma_Exit.
317 procedure Check_Arg_Is_String_Literal
(Arg
: Node_Id
);
318 -- Check the specified argument Arg to make sure that it is a
319 -- string literal. If not give error and raise Pragma_Exit
321 procedure Check_Arg_Is_Task_Dispatching_Policy
(Arg
: Node_Id
);
322 -- Check the specified argument Arg to make sure that it is a valid
323 -- valid task dispatching policy name. If not give error and raise
326 procedure Check_At_Least_N_Arguments
(N
: Nat
);
327 -- Check there are at least N arguments present
329 procedure Check_At_Most_N_Arguments
(N
: Nat
);
330 -- Check there are no more than N arguments present
332 procedure Check_Component
(Comp
: Node_Id
);
333 -- Examine Unchecked_Union component for correct use of per-object
334 -- constrained subtypes.
336 procedure Check_Duplicated_Export_Name
(Nam
: Node_Id
);
337 -- Nam is an N_String_Literal node containing the external name set
338 -- by an Import or Export pragma (or extended Import or Export pragma).
339 -- This procedure checks for possible duplications if this is the
340 -- export case, and if found, issues an appropriate error message.
342 procedure Check_First_Subtype
(Arg
: Node_Id
);
343 -- Checks that Arg, whose expression is an entity name referencing
344 -- a subtype, does not reference a type that is not a first subtype.
346 procedure Check_In_Main_Program
;
347 -- Common checks for pragmas that appear within a main program
348 -- (Priority, Main_Storage, Time_Slice).
350 procedure Check_Interrupt_Or_Attach_Handler
;
351 -- Common processing for first argument of pragma Interrupt_Handler
352 -- or pragma Attach_Handler.
354 procedure Check_Is_In_Decl_Part_Or_Package_Spec
;
355 -- Check that pragma appears in a declarative part, or in a package
356 -- specification, i.e. that it does not occur in a statement sequence
359 procedure Check_No_Identifier
(Arg
: Node_Id
);
360 -- Checks that the given argument does not have an identifier. If
361 -- an identifier is present, then an error message is issued, and
362 -- Pragma_Exit is raised.
364 procedure Check_No_Identifiers
;
365 -- Checks that none of the arguments to the pragma has an identifier.
366 -- If any argument has an identifier, then an error message is issued,
367 -- and Pragma_Exit is raised.
369 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: Name_Id
);
370 -- Checks if the given argument has an identifier, and if so, requires
371 -- it to match the given identifier name. If there is a non-matching
372 -- identifier, then an error message is given and Error_Pragmas raised.
374 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: String);
375 -- Checks if the given argument has an identifier, and if so, requires
376 -- it to match the given identifier name. If there is a non-matching
377 -- identifier, then an error message is given and Error_Pragmas raised.
378 -- In this version of the procedure, the identifier name is given as
379 -- a string with lower case letters.
381 procedure Check_Static_Constraint
(Constr
: Node_Id
);
382 -- Constr is a constraint from an N_Subtype_Indication node from a
383 -- component constraint in an Unchecked_Union type. This routine checks
384 -- that the constraint is static as required by the restrictions for
387 procedure Check_Valid_Configuration_Pragma
;
388 -- Legality checks for placement of a configuration pragma
390 procedure Check_Valid_Library_Unit_Pragma
;
391 -- Legality checks for library unit pragmas. A special case arises for
392 -- pragmas in generic instances that come from copies of the original
393 -- library unit pragmas in the generic templates. In the case of other
394 -- than library level instantiations these can appear in contexts which
395 -- would normally be invalid (they only apply to the original template
396 -- and to library level instantiations), and they are simply ignored,
397 -- which is implemented by rewriting them as null statements.
399 procedure Check_Variant
(Variant
: Node_Id
);
400 -- Check Unchecked_Union variant for lack of nested variants and
401 -- presence of at least one component.
403 procedure Error_Pragma
(Msg
: String);
404 pragma No_Return
(Error_Pragma
);
405 -- Outputs error message for current pragma. The message contains an %
406 -- that will be replaced with the pragma name, and the flag is placed
407 -- on the pragma itself. Pragma_Exit is then raised.
409 procedure Error_Pragma_Arg
(Msg
: String; Arg
: Node_Id
);
410 pragma No_Return
(Error_Pragma_Arg
);
411 -- Outputs error message for current pragma. The message may contain
412 -- a % that will be replaced with the pragma name. The parameter Arg
413 -- may either be a pragma argument association, in which case the flag
414 -- is placed on the expression of this association, or an expression,
415 -- in which case the flag is placed directly on the expression. The
416 -- message is placed using Error_Msg_N, so the message may also contain
417 -- an & insertion character which will reference the given Arg value.
418 -- After placing the message, Pragma_Exit is raised.
420 procedure Error_Pragma_Arg
(Msg1
, Msg2
: String; Arg
: Node_Id
);
421 pragma No_Return
(Error_Pragma_Arg
);
422 -- Similar to above form of Error_Pragma_Arg except that two messages
423 -- are provided, the second is a continuation comment starting with \.
425 procedure Error_Pragma_Arg_Ident
(Msg
: String; Arg
: Node_Id
);
426 pragma No_Return
(Error_Pragma_Arg_Ident
);
427 -- Outputs error message for current pragma. The message may contain
428 -- a % that will be replaced with the pragma name. The parameter Arg
429 -- must be a pragma argument association with a non-empty identifier
430 -- (i.e. its Chars field must be set), and the error message is placed
431 -- on the identifier. The message is placed using Error_Msg_N so
432 -- the message may also contain an & insertion character which will
433 -- reference the identifier. After placing the message, Pragma_Exit
436 function Find_Lib_Unit_Name
return Entity_Id
;
437 -- Used for a library unit pragma to find the entity to which the
438 -- library unit pragma applies, returns the entity found.
440 procedure Find_Program_Unit_Name
(Id
: Node_Id
);
441 -- If the pragma is a compilation unit pragma, the id must denote the
442 -- compilation unit in the same compilation, and the pragma must appear
443 -- in the list of preceding or trailing pragmas. If it is a program
444 -- unit pragma that is not a compilation unit pragma, then the
445 -- identifier must be visible.
447 type Name_List
is array (Natural range <>) of Name_Id
;
448 type Args_List
is array (Natural range <>) of Node_Id
;
449 procedure Gather_Associations
451 Args
: out Args_List
);
452 -- This procedure is used to gather the arguments for a pragma that
453 -- permits arbitrary ordering of parameters using the normal rules
454 -- for named and positional parameters. The Names argument is a list
455 -- of Name_Id values that corresponds to the allowed pragma argument
456 -- association identifiers in order. The result returned in Args is
457 -- a list of corresponding expressions that are the pragma arguments.
458 -- Note that this is a list of expressions, not of pragma argument
459 -- associations (Gather_Associations has completely checked all the
460 -- optional identifiers when it returns). An entry in Args is Empty
461 -- on return if the corresponding argument is not present.
463 function Get_Pragma_Arg
(Arg
: Node_Id
) return Node_Id
;
464 -- All the routines that check pragma arguments take either a pragma
465 -- argument association (in which case the expression of the argument
466 -- association is checked), or the expression directly. The function
467 -- Get_Pragma_Arg is a utility used to deal with these two cases. If
468 -- Arg is a pragma argument association node, then its expression is
469 -- returned, otherwise Arg is returned unchanged.
471 procedure GNAT_Pragma
;
472 -- Called for all GNAT defined pragmas to note the use of the feature,
473 -- and also check the relevant restriction (No_Implementation_Pragmas).
475 function Is_Before_First_Decl
476 (Pragma_Node
: Node_Id
;
477 Decls
: List_Id
) return Boolean;
478 -- Return True if Pragma_Node is before the first declarative item in
479 -- Decls where Decls is the list of declarative items.
481 function Is_Configuration_Pragma
return Boolean;
482 -- Deterermines if the placement of the current pragma is appropriate
483 -- for a configuration pragma (precedes the current compilation unit)
485 procedure Pragma_Misplaced
;
486 -- Issue fatal error message for misplaced pragma
488 procedure Process_Atomic_Shared_Volatile
;
489 -- Common processing for pragmas Atomic, Shared, Volatile. Note that
490 -- Shared is an obsolete Ada 83 pragma, treated as being identical
491 -- in effect to pragma Atomic.
493 procedure Process_Convention
(C
: out Convention_Id
; E
: out Entity_Id
);
494 -- Common procesing for Convention, Interface, Import and Export.
495 -- Checks first two arguments of pragma, and sets the appropriate
496 -- convention value in the specified entity or entities. On return
497 -- C is the convention, E is the referenced entity.
499 procedure Process_Extended_Import_Export_Exception_Pragma
500 (Arg_Internal
: Node_Id
;
501 Arg_External
: Node_Id
;
504 -- Common processing for the pragmas Import/Export_Exception.
505 -- The three arguments correspond to the three named parameters of
506 -- the pragma. An argument is empty if the corresponding parameter
507 -- is not present in the pragma.
509 procedure Process_Extended_Import_Export_Object_Pragma
510 (Arg_Internal
: Node_Id
;
511 Arg_External
: Node_Id
;
513 -- Common processing for the pragmass Import/Export_Object.
514 -- The three arguments correspond to the three named parameters
515 -- of the pragmas. An argument is empty if the corresponding
516 -- parameter is not present in the pragma.
518 procedure Process_Extended_Import_Export_Internal_Arg
519 (Arg_Internal
: Node_Id
:= Empty
);
520 -- Common processing for all extended Import and Export pragmas. The
521 -- argument is the pragma parameter for the Internal argument. If
522 -- Arg_Internal is empty or inappropriate, an error message is posted.
523 -- Otherwise, on normal return, the Entity_Field of Arg_Internal is
524 -- set to identify the referenced entity.
526 procedure Process_Extended_Import_Export_Subprogram_Pragma
527 (Arg_Internal
: Node_Id
;
528 Arg_External
: Node_Id
;
529 Arg_Parameter_Types
: Node_Id
;
530 Arg_Result_Type
: Node_Id
:= Empty
;
531 Arg_Mechanism
: Node_Id
;
532 Arg_Result_Mechanism
: Node_Id
:= Empty
;
533 Arg_First_Optional_Parameter
: Node_Id
:= Empty
);
534 -- Common processing for all extended Import and Export pragmas
535 -- applying to subprograms. The caller omits any arguments that do
536 -- bnot apply to the pragma in question (for example, Arg_Result_Type
537 -- can be non-Empty only in the Import_Function and Export_Function
538 -- cases). The argument names correspond to the allowed pragma
539 -- association identifiers.
541 procedure Process_Generic_List
;
542 -- Common processing for Share_Generic and Inline_Generic
544 procedure Process_Import_Or_Interface
;
545 -- Common processing for Import of Interface
547 procedure Process_Inline
(Active
: Boolean);
548 -- Common processing for Inline and Inline_Always. The parameter
549 -- indicates if the inline pragma is active, i.e. if it should
550 -- actually cause inlining to occur.
552 procedure Process_Interface_Name
553 (Subprogram_Def
: Entity_Id
;
556 -- Given the last two arguments of pragma Import, pragma Export, or
557 -- pragma Interface_Name, performs validity checks and sets the
558 -- Interface_Name field of the given subprogram entity to the
559 -- appropriate external or link name, depending on the arguments
560 -- given. Ext_Arg is always present, but Link_Arg may be missing.
561 -- Note that Ext_Arg may represent the Link_Name if Link_Arg is
562 -- missing, and appropriate named notation is used for Ext_Arg.
563 -- If neither Ext_Arg nor Link_Arg is present, the interface name
564 -- is set to the default from the subprogram name.
566 procedure Process_Interrupt_Or_Attach_Handler
;
567 -- Common processing for Interrupt and Attach_Handler pragmas
569 procedure Process_Restrictions_Or_Restriction_Warnings
;
570 -- Common processing for Restrictions and Restriction_Warnings pragmas
572 procedure Process_Suppress_Unsuppress
(Suppress_Case
: Boolean);
573 -- Common processing for Suppress and Unsuppress. The boolean parameter
574 -- Suppress_Case is True for the Suppress case, and False for the
577 procedure Set_Exported
(E
: Entity_Id
; Arg
: Node_Id
);
578 -- This procedure sets the Is_Exported flag for the given entity,
579 -- checking that the entity was not previously imported. Arg is
580 -- the argument that specified the entity. A check is also made
581 -- for exporting inappropriate entities.
583 procedure Set_Extended_Import_Export_External_Name
584 (Internal_Ent
: Entity_Id
;
585 Arg_External
: Node_Id
);
586 -- Common processing for all extended import export pragmas. The first
587 -- argument, Internal_Ent, is the internal entity, which has already
588 -- been checked for validity by the caller. Arg_External is from the
589 -- Import or Export pragma, and may be null if no External parameter
590 -- was present. If Arg_External is present and is a non-null string
591 -- (a null string is treated as the default), then the Interface_Name
592 -- field of Internal_Ent is set appropriately.
594 procedure Set_Imported
(E
: Entity_Id
);
595 -- This procedure sets the Is_Imported flag for the given entity,
596 -- checking that it is not previously exported or imported.
598 procedure Set_Mechanism_Value
(Ent
: Entity_Id
; Mech_Name
: Node_Id
);
599 -- Mech is a parameter passing mechanism (see Import_Function syntax
600 -- for MECHANISM_NAME). This routine checks that the mechanism argument
601 -- has the right form, and if not issues an error message. If the
602 -- argument has the right form then the Mechanism field of Ent is
603 -- set appropriately.
605 procedure Set_Ravenscar_Profile
(N
: Node_Id
);
606 -- Activate the set of configuration pragmas and restrictions that
607 -- make up the Ravenscar Profile. N is the corresponding pragma
608 -- node, which is used for error messages on any constructs
609 -- that violate the profile.
611 --------------------------
612 -- Check_Ada_83_Warning --
613 --------------------------
615 procedure Check_Ada_83_Warning
is
617 if Ada_Version
= Ada_83
and then Comes_From_Source
(N
) then
618 Error_Msg_N
("(Ada 83) pragma& is non-standard?", N
);
620 end Check_Ada_83_Warning
;
622 ---------------------
623 -- Check_Arg_Count --
624 ---------------------
626 procedure Check_Arg_Count
(Required
: Nat
) is
628 if Arg_Count
/= Required
then
629 Error_Pragma
("wrong number of arguments for pragma%");
633 --------------------------------
634 -- Check_Arg_Is_External_Name --
635 --------------------------------
637 procedure Check_Arg_Is_External_Name
(Arg
: Node_Id
) is
638 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
641 if Nkind
(Argx
) = N_Identifier
then
645 Analyze_And_Resolve
(Argx
, Standard_String
);
647 if Is_OK_Static_Expression
(Argx
) then
650 elsif Etype
(Argx
) = Any_Type
then
653 -- An interesting special case, if we have a string literal and
654 -- we are in Ada 83 mode, then we allow it even though it will
655 -- not be flagged as static. This allows expected Ada 83 mode
656 -- use of external names which are string literals, even though
657 -- technically these are not static in Ada 83.
659 elsif Ada_Version
= Ada_83
660 and then Nkind
(Argx
) = N_String_Literal
664 -- Static expression that raises Constraint_Error. This has
665 -- already been flagged, so just exit from pragma processing.
667 elsif Is_Static_Expression
(Argx
) then
670 -- Here we have a real error (non-static expression)
673 Error_Msg_Name_1
:= Chars
(N
);
675 ("argument for pragma% must be a identifier or " &
676 "static string expression!", Argx
);
680 end Check_Arg_Is_External_Name
;
682 -----------------------------
683 -- Check_Arg_Is_Identifier --
684 -----------------------------
686 procedure Check_Arg_Is_Identifier
(Arg
: Node_Id
) is
687 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
689 if Nkind
(Argx
) /= N_Identifier
then
691 ("argument for pragma% must be identifier", Argx
);
693 end Check_Arg_Is_Identifier
;
695 ----------------------------------
696 -- Check_Arg_Is_Integer_Literal --
697 ----------------------------------
699 procedure Check_Arg_Is_Integer_Literal
(Arg
: Node_Id
) is
700 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
702 if Nkind
(Argx
) /= N_Integer_Literal
then
704 ("argument for pragma% must be integer literal", Argx
);
706 end Check_Arg_Is_Integer_Literal
;
708 -------------------------------------------
709 -- Check_Arg_Is_Library_Level_Local_Name --
710 -------------------------------------------
714 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
715 -- | library_unit_NAME
717 procedure Check_Arg_Is_Library_Level_Local_Name
(Arg
: Node_Id
) is
719 Check_Arg_Is_Local_Name
(Arg
);
721 if not Is_Library_Level_Entity
(Entity
(Expression
(Arg
)))
722 and then Comes_From_Source
(N
)
725 ("argument for pragma% must be library level entity", Arg
);
727 end Check_Arg_Is_Library_Level_Local_Name
;
729 -----------------------------
730 -- Check_Arg_Is_Local_Name --
731 -----------------------------
735 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
736 -- | library_unit_NAME
738 procedure Check_Arg_Is_Local_Name
(Arg
: Node_Id
) is
739 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
744 if Nkind
(Argx
) not in N_Direct_Name
745 and then (Nkind
(Argx
) /= N_Attribute_Reference
746 or else Present
(Expressions
(Argx
))
747 or else Nkind
(Prefix
(Argx
)) /= N_Identifier
)
748 and then (not Is_Entity_Name
(Argx
)
749 or else not Is_Compilation_Unit
(Entity
(Argx
)))
751 Error_Pragma_Arg
("argument for pragma% must be local name", Argx
);
754 if Is_Entity_Name
(Argx
)
755 and then Scope
(Entity
(Argx
)) /= Current_Scope
758 ("pragma% argument must be in same declarative part", Arg
);
760 end Check_Arg_Is_Local_Name
;
762 ---------------------------------
763 -- Check_Arg_Is_Locking_Policy --
764 ---------------------------------
766 procedure Check_Arg_Is_Locking_Policy
(Arg
: Node_Id
) is
767 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
770 Check_Arg_Is_Identifier
(Argx
);
772 if not Is_Locking_Policy_Name
(Chars
(Argx
)) then
774 ("& is not a valid locking policy name", Argx
);
776 end Check_Arg_Is_Locking_Policy
;
778 -------------------------
779 -- Check_Arg_Is_One_Of --
780 -------------------------
782 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
: Name_Id
) is
783 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
786 Check_Arg_Is_Identifier
(Argx
);
788 if Chars
(Argx
) /= N1
and then Chars
(Argx
) /= N2
then
789 Error_Msg_Name_2
:= N1
;
790 Error_Msg_Name_3
:= N2
;
791 Error_Pragma_Arg
("argument for pragma% must be% or%", Argx
);
793 end Check_Arg_Is_One_Of
;
795 procedure Check_Arg_Is_One_Of
797 N1
, N2
, N3
: Name_Id
)
799 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
802 Check_Arg_Is_Identifier
(Argx
);
804 if Chars
(Argx
) /= N1
805 and then Chars
(Argx
) /= N2
806 and then Chars
(Argx
) /= N3
808 Error_Pragma_Arg
("invalid argument for pragma%", Argx
);
810 end Check_Arg_Is_One_Of
;
812 ---------------------------------
813 -- Check_Arg_Is_Queuing_Policy --
814 ---------------------------------
816 procedure Check_Arg_Is_Queuing_Policy
(Arg
: Node_Id
) is
817 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
820 Check_Arg_Is_Identifier
(Argx
);
822 if not Is_Queuing_Policy_Name
(Chars
(Argx
)) then
824 ("& is not a valid queuing policy name", Argx
);
826 end Check_Arg_Is_Queuing_Policy
;
828 ------------------------------------
829 -- Check_Arg_Is_Static_Expression --
830 ------------------------------------
832 procedure Check_Arg_Is_Static_Expression
836 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
839 Analyze_And_Resolve
(Argx
, Typ
);
841 if Is_OK_Static_Expression
(Argx
) then
844 elsif Etype
(Argx
) = Any_Type
then
847 -- An interesting special case, if we have a string literal and
848 -- we are in Ada 83 mode, then we allow it even though it will
849 -- not be flagged as static. This allows the use of Ada 95
850 -- pragmas like Import in Ada 83 mode. They will of course be
851 -- flagged with warnings as usual, but will not cause errors.
853 elsif Ada_Version
= Ada_83
854 and then Nkind
(Argx
) = N_String_Literal
858 -- Static expression that raises Constraint_Error. This has
859 -- already been flagged, so just exit from pragma processing.
861 elsif Is_Static_Expression
(Argx
) then
864 -- Finally, we have a real error
867 Error_Msg_Name_1
:= Chars
(N
);
869 ("argument for pragma% must be a static expression!", Argx
);
872 end Check_Arg_Is_Static_Expression
;
874 ---------------------------------
875 -- Check_Arg_Is_String_Literal --
876 ---------------------------------
878 procedure Check_Arg_Is_String_Literal
(Arg
: Node_Id
) is
879 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
882 if Nkind
(Argx
) /= N_String_Literal
then
884 ("argument for pragma% must be string literal", Argx
);
887 end Check_Arg_Is_String_Literal
;
889 ------------------------------------------
890 -- Check_Arg_Is_Task_Dispatching_Policy --
891 ------------------------------------------
893 procedure Check_Arg_Is_Task_Dispatching_Policy
(Arg
: Node_Id
) is
894 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
897 Check_Arg_Is_Identifier
(Argx
);
899 if not Is_Task_Dispatching_Policy_Name
(Chars
(Argx
)) then
901 ("& is not a valid task dispatching policy name", Argx
);
903 end Check_Arg_Is_Task_Dispatching_Policy
;
905 --------------------------------
906 -- Check_At_Least_N_Arguments --
907 --------------------------------
909 procedure Check_At_Least_N_Arguments
(N
: Nat
) is
911 if Arg_Count
< N
then
912 Error_Pragma
("too few arguments for pragma%");
914 end Check_At_Least_N_Arguments
;
916 -------------------------------
917 -- Check_At_Most_N_Arguments --
918 -------------------------------
920 procedure Check_At_Most_N_Arguments
(N
: Nat
) is
924 if Arg_Count
> N
then
929 Error_Pragma_Arg
("too many arguments for pragma%", Arg
);
932 end Check_At_Most_N_Arguments
;
934 ---------------------
935 -- Check_Component --
936 ---------------------
938 procedure Check_Component
(Comp
: Node_Id
) is
940 if Nkind
(Comp
) = N_Component_Declaration
then
942 Sindic
: constant Node_Id
:=
943 Subtype_Indication
(Component_Definition
(Comp
));
946 if Nkind
(Sindic
) = N_Subtype_Indication
then
948 -- Ada 2005 (AI-216): If a component subtype is subject to
949 -- a per-object constraint, then the component type shall
950 -- be an Unchecked_Union.
952 if Has_Per_Object_Constraint
(Defining_Identifier
(Comp
))
954 not Is_Unchecked_Union
(Etype
(Subtype_Mark
(Sindic
)))
956 Error_Msg_N
("component subtype subject to per-object" &
957 " constraint must be an Unchecked_Union", Comp
);
964 ----------------------------------
965 -- Check_Duplicated_Export_Name --
966 ----------------------------------
968 procedure Check_Duplicated_Export_Name
(Nam
: Node_Id
) is
969 String_Val
: constant String_Id
:= Strval
(Nam
);
972 -- We are only interested in the export case, and in the case of
973 -- generics, it is the instance, not the template, that is the
974 -- problem (the template will generate a warning in any case).
976 if not Inside_A_Generic
977 and then (Prag_Id
= Pragma_Export
979 Prag_Id
= Pragma_Export_Procedure
981 Prag_Id
= Pragma_Export_Valued_Procedure
983 Prag_Id
= Pragma_Export_Function
)
985 for J
in Externals
.First
.. Externals
.Last
loop
986 if String_Equal
(String_Val
, Strval
(Externals
.Table
(J
))) then
987 Error_Msg_Sloc
:= Sloc
(Externals
.Table
(J
));
988 Error_Msg_N
("external name duplicates name given#", Nam
);
993 Externals
.Append
(Nam
);
995 end Check_Duplicated_Export_Name
;
997 -------------------------
998 -- Check_First_Subtype --
999 -------------------------
1001 procedure Check_First_Subtype
(Arg
: Node_Id
) is
1002 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
1005 if not Is_First_Subtype
(Entity
(Argx
)) then
1007 ("pragma% cannot apply to subtype", Argx
);
1009 end Check_First_Subtype
;
1011 ---------------------------
1012 -- Check_In_Main_Program --
1013 ---------------------------
1015 procedure Check_In_Main_Program
is
1016 P
: constant Node_Id
:= Parent
(N
);
1019 -- Must be at in subprogram body
1021 if Nkind
(P
) /= N_Subprogram_Body
then
1022 Error_Pragma
("% pragma allowed only in subprogram");
1024 -- Otherwise warn if obviously not main program
1026 elsif Present
(Parameter_Specifications
(Specification
(P
)))
1027 or else not Is_Compilation_Unit
(Defining_Entity
(P
))
1029 Error_Msg_Name_1
:= Chars
(N
);
1031 ("?pragma% is only effective in main program", N
);
1033 end Check_In_Main_Program
;
1035 ---------------------------------------
1036 -- Check_Interrupt_Or_Attach_Handler --
1037 ---------------------------------------
1039 procedure Check_Interrupt_Or_Attach_Handler
is
1040 Arg1_X
: constant Node_Id
:= Expression
(Arg1
);
1045 if not Is_Entity_Name
(Arg1_X
) then
1047 ("argument of pragma% must be entity name", Arg1
);
1049 elsif Prag_Id
= Pragma_Interrupt_Handler
then
1050 Check_Restriction
(No_Dynamic_Attachment
, N
);
1054 Handler_Proc
: Entity_Id
:= Empty
;
1055 Proc_Scope
: Entity_Id
;
1056 Found
: Boolean := False;
1059 if not Is_Overloaded
(Arg1_X
) then
1060 Handler_Proc
:= Entity
(Arg1_X
);
1065 Index
: Interp_Index
;
1068 Get_First_Interp
(Arg1_X
, Index
, It
);
1069 while Present
(It
.Nam
) loop
1070 Handler_Proc
:= It
.Nam
;
1072 if Ekind
(Handler_Proc
) = E_Procedure
1073 and then No
(First_Formal
(Handler_Proc
))
1077 Set_Entity
(Arg1_X
, Handler_Proc
);
1078 Set_Is_Overloaded
(Arg1_X
, False);
1081 ("ambiguous handler name for pragma% ", Arg1
);
1085 Get_Next_Interp
(Index
, It
);
1090 ("argument of pragma% must be parameterless procedure",
1093 Handler_Proc
:= Entity
(Arg1_X
);
1098 Proc_Scope
:= Scope
(Handler_Proc
);
1100 -- On AAMP only, a pragma Interrupt_Handler is supported for
1101 -- nonprotected parameterless procedures.
1104 and then Prag_Id
= Pragma_Interrupt_Handler
1106 if Ekind
(Handler_Proc
) /= E_Procedure
then
1108 ("argument of pragma% must be a procedure", Arg1
);
1111 elsif Ekind
(Handler_Proc
) /= E_Procedure
1112 or else Ekind
(Proc_Scope
) /= E_Protected_Type
1115 ("argument of pragma% must be protected procedure", Arg1
);
1118 if (not AAMP_On_Target
or else Prag_Id
= Pragma_Attach_Handler
)
1119 and then Ekind
(Proc_Scope
) = E_Protected_Type
1122 Protected_Definition
(Parent
(Proc_Scope
))
1124 Error_Pragma
("pragma% must be in protected definition");
1128 if not Is_Library_Level_Entity
(Proc_Scope
)
1129 or else (AAMP_On_Target
1130 and then not Is_Library_Level_Entity
(Handler_Proc
))
1133 ("pragma% requires library-level entity", Arg1
);
1136 if Present
(First_Formal
(Handler_Proc
)) then
1138 ("argument of pragma% must be parameterless procedure",
1142 end Check_Interrupt_Or_Attach_Handler
;
1144 -------------------------------------------
1145 -- Check_Is_In_Decl_Part_Or_Package_Spec --
1146 -------------------------------------------
1148 procedure Check_Is_In_Decl_Part_Or_Package_Spec
is
1157 elsif Nkind
(P
) = N_Handled_Sequence_Of_Statements
then
1160 elsif Nkind
(P
) = N_Package_Specification
then
1163 elsif Nkind
(P
) = N_Block_Statement
then
1166 -- Note: the following tests seem a little peculiar, because
1167 -- they test for bodies, but if we were in the statement part
1168 -- of the body, we would already have hit the handled statement
1169 -- sequence, so the only way we get here is by being in the
1170 -- declarative part of the body.
1172 elsif Nkind
(P
) = N_Subprogram_Body
1173 or else Nkind
(P
) = N_Package_Body
1174 or else Nkind
(P
) = N_Task_Body
1175 or else Nkind
(P
) = N_Entry_Body
1183 Error_Pragma
("pragma% is not in declarative part or package spec");
1184 end Check_Is_In_Decl_Part_Or_Package_Spec
;
1186 -------------------------
1187 -- Check_No_Identifier --
1188 -------------------------
1190 procedure Check_No_Identifier
(Arg
: Node_Id
) is
1192 if Chars
(Arg
) /= No_Name
then
1193 Error_Pragma_Arg_Ident
1194 ("pragma% does not permit identifier& here", Arg
);
1196 end Check_No_Identifier
;
1198 --------------------------
1199 -- Check_No_Identifiers --
1200 --------------------------
1202 procedure Check_No_Identifiers
is
1206 if Arg_Count
> 0 then
1209 while Present
(Arg_Node
) loop
1210 Check_No_Identifier
(Arg_Node
);
1214 end Check_No_Identifiers
;
1216 -------------------------------
1217 -- Check_Optional_Identifier --
1218 -------------------------------
1220 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: Name_Id
) is
1222 if Present
(Arg
) and then Chars
(Arg
) /= No_Name
then
1223 if Chars
(Arg
) /= Id
then
1224 Error_Msg_Name_1
:= Chars
(N
);
1225 Error_Msg_Name_2
:= Id
;
1226 Error_Msg_N
("pragma% argument expects identifier%", Arg
);
1230 end Check_Optional_Identifier
;
1232 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: String) is
1234 Name_Buffer
(1 .. Id
'Length) := Id
;
1235 Name_Len
:= Id
'Length;
1236 Check_Optional_Identifier
(Arg
, Name_Find
);
1237 end Check_Optional_Identifier
;
1239 -----------------------------
1240 -- Check_Static_Constraint --
1241 -----------------------------
1243 -- Note: for convenience in writing this procedure, in addition to
1244 -- the officially (i.e. by spec) allowed argument which is always
1245 -- a constraint, it also allows ranges and discriminant associations.
1246 -- Above is not clear ???
1248 procedure Check_Static_Constraint
(Constr
: Node_Id
) is
1250 --------------------
1251 -- Require_Static --
1252 --------------------
1254 procedure Require_Static
(E
: Node_Id
);
1255 -- Require given expression to be static expression
1257 procedure Require_Static
(E
: Node_Id
) is
1259 if not Is_OK_Static_Expression
(E
) then
1260 Flag_Non_Static_Expr
1261 ("non-static constraint not allowed in Unchecked_Union!", E
);
1266 -- Start of processing for Check_Static_Constraint
1269 case Nkind
(Constr
) is
1270 when N_Discriminant_Association
=>
1271 Require_Static
(Expression
(Constr
));
1274 Require_Static
(Low_Bound
(Constr
));
1275 Require_Static
(High_Bound
(Constr
));
1277 when N_Attribute_Reference
=>
1278 Require_Static
(Type_Low_Bound
(Etype
(Prefix
(Constr
))));
1279 Require_Static
(Type_High_Bound
(Etype
(Prefix
(Constr
))));
1281 when N_Range_Constraint
=>
1282 Check_Static_Constraint
(Range_Expression
(Constr
));
1284 when N_Index_Or_Discriminant_Constraint
=>
1286 IDC
: Entity_Id
:= First
(Constraints
(Constr
));
1288 while Present
(IDC
) loop
1289 Check_Static_Constraint
(IDC
);
1297 end Check_Static_Constraint
;
1299 --------------------------------------
1300 -- Check_Valid_Configuration_Pragma --
1301 --------------------------------------
1303 -- A configuration pragma must appear in the context clause of
1304 -- a compilation unit, at the start of the list (i.e. only other
1305 -- pragmas may precede it).
1307 procedure Check_Valid_Configuration_Pragma
is
1309 if not Is_Configuration_Pragma
then
1310 Error_Pragma
("incorrect placement for configuration pragma%");
1312 end Check_Valid_Configuration_Pragma
;
1314 -------------------------------------
1315 -- Check_Valid_Library_Unit_Pragma --
1316 -------------------------------------
1318 procedure Check_Valid_Library_Unit_Pragma
is
1320 Parent_Node
: Node_Id
;
1321 Unit_Name
: Entity_Id
;
1322 Unit_Kind
: Node_Kind
;
1323 Unit_Node
: Node_Id
;
1324 Sindex
: Source_File_Index
;
1327 if not Is_List_Member
(N
) then
1331 Plist
:= List_Containing
(N
);
1332 Parent_Node
:= Parent
(Plist
);
1334 if Parent_Node
= Empty
then
1337 -- Case of pragma appearing after a compilation unit. In this
1338 -- case it must have an argument with the corresponding name
1339 -- and must be part of the following pragmas of its parent.
1341 elsif Nkind
(Parent_Node
) = N_Compilation_Unit_Aux
then
1342 if Plist
/= Pragmas_After
(Parent_Node
) then
1345 elsif Arg_Count
= 0 then
1347 ("argument required if outside compilation unit");
1350 Check_No_Identifiers
;
1351 Check_Arg_Count
(1);
1352 Unit_Node
:= Unit
(Parent
(Parent_Node
));
1353 Unit_Kind
:= Nkind
(Unit_Node
);
1355 Analyze
(Expression
(Arg1
));
1357 if Unit_Kind
= N_Generic_Subprogram_Declaration
1358 or else Unit_Kind
= N_Subprogram_Declaration
1360 Unit_Name
:= Defining_Entity
(Unit_Node
);
1362 elsif Unit_Kind
= N_Function_Instantiation
1363 or else Unit_Kind
= N_Package_Instantiation
1364 or else Unit_Kind
= N_Procedure_Instantiation
1366 Unit_Name
:= Defining_Entity
(Unit_Node
);
1369 Unit_Name
:= Cunit_Entity
(Current_Sem_Unit
);
1372 if Chars
(Unit_Name
) /=
1373 Chars
(Entity
(Expression
(Arg1
)))
1376 ("pragma% argument is not current unit name", Arg1
);
1379 if Ekind
(Unit_Name
) = E_Package
1380 and then Present
(Renamed_Entity
(Unit_Name
))
1382 Error_Pragma
("pragma% not allowed for renamed package");
1386 -- Pragma appears other than after a compilation unit
1389 -- Here we check for the generic instantiation case and also
1390 -- for the case of processing a generic formal package. We
1391 -- detect these cases by noting that the Sloc on the node
1392 -- does not belong to the current compilation unit.
1394 Sindex
:= Source_Index
(Current_Sem_Unit
);
1396 if Loc
not in Source_First
(Sindex
) .. Source_Last
(Sindex
) then
1397 Rewrite
(N
, Make_Null_Statement
(Loc
));
1400 -- If before first declaration, the pragma applies to the
1401 -- enclosing unit, and the name if present must be this name.
1403 elsif Is_Before_First_Decl
(N
, Plist
) then
1404 Unit_Node
:= Unit_Declaration_Node
(Current_Scope
);
1405 Unit_Kind
:= Nkind
(Unit_Node
);
1407 if Nkind
(Parent
(Unit_Node
)) /= N_Compilation_Unit
then
1410 elsif Unit_Kind
= N_Subprogram_Body
1411 and then not Acts_As_Spec
(Unit_Node
)
1415 elsif Nkind
(Parent_Node
) = N_Package_Body
then
1418 elsif Nkind
(Parent_Node
) = N_Package_Specification
1419 and then Plist
= Private_Declarations
(Parent_Node
)
1423 elsif (Nkind
(Parent_Node
) = N_Generic_Package_Declaration
1424 or else Nkind
(Parent_Node
)
1425 = N_Generic_Subprogram_Declaration
)
1426 and then Plist
= Generic_Formal_Declarations
(Parent_Node
)
1430 elsif Arg_Count
> 0 then
1431 Analyze
(Expression
(Arg1
));
1433 if Entity
(Expression
(Arg1
)) /= Current_Scope
then
1435 ("name in pragma% must be enclosing unit", Arg1
);
1438 -- It is legal to have no argument in this context
1444 -- Error if not before first declaration. This is because a
1445 -- library unit pragma argument must be the name of a library
1446 -- unit (RM 10.1.5(7)), but the only names permitted in this
1447 -- context are (RM 10.1.5(6)) names of subprogram declarations,
1448 -- generic subprogram declarations or generic instantiations.
1452 ("pragma% misplaced, must be before first declaration");
1456 end Check_Valid_Library_Unit_Pragma
;
1462 procedure Check_Variant
(Variant
: Node_Id
) is
1463 Clist
: constant Node_Id
:= Component_List
(Variant
);
1467 if Present
(Variant_Part
(Clist
)) then
1469 ("Unchecked_Union may not have nested variants",
1470 Variant_Part
(Clist
));
1473 if not Is_Non_Empty_List
(Component_Items
(Clist
)) then
1475 ("Unchecked_Union may not have empty component list",
1480 Comp
:= First
(Component_Items
(Clist
));
1481 while Present
(Comp
) loop
1483 Check_Component
(Comp
);
1493 procedure Error_Pragma
(Msg
: String) is
1495 Error_Msg_Name_1
:= Chars
(N
);
1496 Error_Msg_N
(Msg
, N
);
1500 ----------------------
1501 -- Error_Pragma_Arg --
1502 ----------------------
1504 procedure Error_Pragma_Arg
(Msg
: String; Arg
: Node_Id
) is
1506 Error_Msg_Name_1
:= Chars
(N
);
1507 Error_Msg_N
(Msg
, Get_Pragma_Arg
(Arg
));
1509 end Error_Pragma_Arg
;
1511 procedure Error_Pragma_Arg
(Msg1
, Msg2
: String; Arg
: Node_Id
) is
1513 Error_Msg_Name_1
:= Chars
(N
);
1514 Error_Msg_N
(Msg1
, Get_Pragma_Arg
(Arg
));
1515 Error_Pragma_Arg
(Msg2
, Arg
);
1516 end Error_Pragma_Arg
;
1518 ----------------------------
1519 -- Error_Pragma_Arg_Ident --
1520 ----------------------------
1522 procedure Error_Pragma_Arg_Ident
(Msg
: String; Arg
: Node_Id
) is
1524 Error_Msg_Name_1
:= Chars
(N
);
1525 Error_Msg_N
(Msg
, Arg
);
1527 end Error_Pragma_Arg_Ident
;
1529 ------------------------
1530 -- Find_Lib_Unit_Name --
1531 ------------------------
1533 function Find_Lib_Unit_Name
return Entity_Id
is
1535 -- Return inner compilation unit entity, for case of nested
1536 -- categorization pragmas. This happens in generic unit.
1538 if Nkind
(Parent
(N
)) = N_Package_Specification
1539 and then Defining_Entity
(Parent
(N
)) /= Current_Scope
1541 return Defining_Entity
(Parent
(N
));
1543 return Current_Scope
;
1545 end Find_Lib_Unit_Name
;
1547 ----------------------------
1548 -- Find_Program_Unit_Name --
1549 ----------------------------
1551 procedure Find_Program_Unit_Name
(Id
: Node_Id
) is
1552 Unit_Name
: Entity_Id
;
1553 Unit_Kind
: Node_Kind
;
1554 P
: constant Node_Id
:= Parent
(N
);
1557 if Nkind
(P
) = N_Compilation_Unit
then
1558 Unit_Kind
:= Nkind
(Unit
(P
));
1560 if Unit_Kind
= N_Subprogram_Declaration
1561 or else Unit_Kind
= N_Package_Declaration
1562 or else Unit_Kind
in N_Generic_Declaration
1564 Unit_Name
:= Defining_Entity
(Unit
(P
));
1566 if Chars
(Id
) = Chars
(Unit_Name
) then
1567 Set_Entity
(Id
, Unit_Name
);
1568 Set_Etype
(Id
, Etype
(Unit_Name
));
1570 Set_Etype
(Id
, Any_Type
);
1572 ("cannot find program unit referenced by pragma%");
1576 Set_Etype
(Id
, Any_Type
);
1577 Error_Pragma
("pragma% inapplicable to this unit");
1584 end Find_Program_Unit_Name
;
1586 -------------------------
1587 -- Gather_Associations --
1588 -------------------------
1590 procedure Gather_Associations
1592 Args
: out Args_List
)
1597 -- Initialize all parameters to Empty
1599 for J
in Args
'Range loop
1603 -- That's all we have to do if there are no argument associations
1605 if No
(Pragma_Argument_Associations
(N
)) then
1609 -- Otherwise first deal with any positional parameters present
1611 Arg
:= First
(Pragma_Argument_Associations
(N
));
1613 for Index
in Args
'Range loop
1614 exit when No
(Arg
) or else Chars
(Arg
) /= No_Name
;
1615 Args
(Index
) := Expression
(Arg
);
1619 -- Positional parameters all processed, if any left, then we
1620 -- have too many positional parameters.
1622 if Present
(Arg
) and then Chars
(Arg
) = No_Name
then
1624 ("too many positional associations for pragma%", Arg
);
1627 -- Process named parameters if any are present
1629 while Present
(Arg
) loop
1630 if Chars
(Arg
) = No_Name
then
1632 ("positional association cannot follow named association",
1636 for Index
in Names
'Range loop
1637 if Names
(Index
) = Chars
(Arg
) then
1638 if Present
(Args
(Index
)) then
1640 ("duplicate argument association for pragma%", Arg
);
1642 Args
(Index
) := Expression
(Arg
);
1647 if Index
= Names
'Last then
1648 Error_Msg_Name_1
:= Chars
(N
);
1649 Error_Msg_N
("pragma% does not allow & argument", Arg
);
1651 -- Check for possible misspelling
1653 for Index1
in Names
'Range loop
1654 if Is_Bad_Spelling_Of
1655 (Get_Name_String
(Chars
(Arg
)),
1656 Get_Name_String
(Names
(Index1
)))
1658 Error_Msg_Name_1
:= Names
(Index1
);
1659 Error_Msg_N
("\possible misspelling of%", Arg
);
1671 end Gather_Associations
;
1673 --------------------
1674 -- Get_Pragma_Arg --
1675 --------------------
1677 function Get_Pragma_Arg
(Arg
: Node_Id
) return Node_Id
is
1679 if Nkind
(Arg
) = N_Pragma_Argument_Association
then
1680 return Expression
(Arg
);
1690 procedure GNAT_Pragma
is
1692 Check_Restriction
(No_Implementation_Pragmas
, N
);
1695 --------------------------
1696 -- Is_Before_First_Decl --
1697 --------------------------
1699 function Is_Before_First_Decl
1700 (Pragma_Node
: Node_Id
;
1701 Decls
: List_Id
) return Boolean
1703 Item
: Node_Id
:= First
(Decls
);
1706 -- Only other pragmas can come before this pragma
1709 if No
(Item
) or else Nkind
(Item
) /= N_Pragma
then
1712 elsif Item
= Pragma_Node
then
1718 end Is_Before_First_Decl
;
1720 -----------------------------
1721 -- Is_Configuration_Pragma --
1722 -----------------------------
1724 -- A configuration pragma must appear in the context clause of
1725 -- a compilation unit, at the start of the list (i.e. only other
1726 -- pragmas may precede it).
1728 function Is_Configuration_Pragma
return Boolean is
1729 Lis
: constant List_Id
:= List_Containing
(N
);
1730 Par
: constant Node_Id
:= Parent
(N
);
1734 -- If no parent, then we are in the configuration pragma file,
1735 -- so the placement is definitely appropriate.
1740 -- Otherwise we must be in the context clause of a compilation unit
1741 -- and the only thing allowed before us in the context list is more
1742 -- configuration pragmas.
1744 elsif Nkind
(Par
) = N_Compilation_Unit
1745 and then Context_Items
(Par
) = Lis
1752 elsif Nkind
(Prg
) /= N_Pragma
then
1762 end Is_Configuration_Pragma
;
1764 ----------------------
1765 -- Pragma_Misplaced --
1766 ----------------------
1768 procedure Pragma_Misplaced
is
1770 Error_Pragma
("incorrect placement of pragma%");
1771 end Pragma_Misplaced
;
1773 ------------------------------------
1774 -- Process Atomic_Shared_Volatile --
1775 ------------------------------------
1777 procedure Process_Atomic_Shared_Volatile
is
1784 procedure Set_Atomic
(E
: Entity_Id
);
1785 -- Set given type as atomic, and if no explicit alignment was
1786 -- given, set alignment to unknown, since back end knows what
1787 -- the alignment requirements are for atomic arrays. Note that
1788 -- this step is necessary for derived types.
1794 procedure Set_Atomic
(E
: Entity_Id
) is
1798 if not Has_Alignment_Clause
(E
) then
1799 Set_Alignment
(E
, Uint_0
);
1803 -- Start of processing for Process_Atomic_Shared_Volatile
1806 Check_Ada_83_Warning
;
1807 Check_No_Identifiers
;
1808 Check_Arg_Count
(1);
1809 Check_Arg_Is_Local_Name
(Arg1
);
1810 E_Id
:= Expression
(Arg1
);
1812 if Etype
(E_Id
) = Any_Type
then
1817 D
:= Declaration_Node
(E
);
1821 if Rep_Item_Too_Early
(E
, N
)
1823 Rep_Item_Too_Late
(E
, N
)
1827 Check_First_Subtype
(Arg1
);
1830 if Prag_Id
/= Pragma_Volatile
then
1832 Set_Atomic
(Underlying_Type
(E
));
1833 Set_Atomic
(Base_Type
(E
));
1836 -- Attribute belongs on the base type. If the
1837 -- view of the type is currently private, it also
1838 -- belongs on the underlying type.
1840 Set_Is_Volatile
(Base_Type
(E
));
1841 Set_Is_Volatile
(Underlying_Type
(E
));
1843 Set_Treat_As_Volatile
(E
);
1844 Set_Treat_As_Volatile
(Underlying_Type
(E
));
1846 elsif K
= N_Object_Declaration
1847 or else (K
= N_Component_Declaration
1848 and then Original_Record_Component
(E
) = E
)
1850 if Rep_Item_Too_Late
(E
, N
) then
1854 if Prag_Id
/= Pragma_Volatile
then
1857 -- If the object declaration has an explicit
1858 -- initialization, a temporary may have to be
1859 -- created to hold the expression, to insure
1860 -- that access to the object remain atomic.
1862 if Nkind
(Parent
(E
)) = N_Object_Declaration
1863 and then Present
(Expression
(Parent
(E
)))
1865 Set_Has_Delayed_Freeze
(E
);
1868 -- An interesting improvement here. If an object of type X
1869 -- is declared atomic, and the type X is not atomic, that's
1870 -- a pity, since it may not have appropraite alignment etc.
1871 -- We can rescue this in the special case where the object
1872 -- and type are in the same unit by just setting the type
1873 -- as atomic, so that the back end will process it as atomic.
1875 Utyp
:= Underlying_Type
(Etype
(E
));
1878 and then Sloc
(E
) > No_Location
1879 and then Sloc
(Utyp
) > No_Location
1881 Get_Source_File_Index
(Sloc
(E
)) =
1882 Get_Source_File_Index
(Sloc
(Underlying_Type
(Etype
(E
))))
1884 Set_Is_Atomic
(Underlying_Type
(Etype
(E
)));
1888 Set_Is_Volatile
(E
);
1889 Set_Treat_As_Volatile
(E
);
1893 ("inappropriate entity for pragma%", Arg1
);
1895 end Process_Atomic_Shared_Volatile
;
1897 ------------------------
1898 -- Process_Convention --
1899 ------------------------
1901 procedure Process_Convention
1902 (C
: out Convention_Id
;
1908 Comp_Unit
: Unit_Number_Type
;
1910 procedure Set_Convention_From_Pragma
(E
: Entity_Id
);
1911 -- Set convention in entity E, and also flag that the entity has a
1912 -- convention pragma. If entity is for a private or incomplete type,
1913 -- also set convention and flag on underlying type. This procedure
1914 -- also deals with the special case of C_Pass_By_Copy convention.
1916 --------------------------------
1917 -- Set_Convention_From_Pragma --
1918 --------------------------------
1920 procedure Set_Convention_From_Pragma
(E
: Entity_Id
) is
1922 Set_Convention
(E
, C
);
1923 Set_Has_Convention_Pragma
(E
);
1925 if Is_Incomplete_Or_Private_Type
(E
) then
1926 Set_Convention
(Underlying_Type
(E
), C
);
1927 Set_Has_Convention_Pragma
(Underlying_Type
(E
), True);
1930 -- A class-wide type should inherit the convention of
1931 -- the specific root type (although this isn't specified
1932 -- clearly by the RM).
1934 if Is_Type
(E
) and then Present
(Class_Wide_Type
(E
)) then
1935 Set_Convention
(Class_Wide_Type
(E
), C
);
1938 -- If the entity is a record type, then check for special case
1939 -- of C_Pass_By_Copy, which is treated the same as C except that
1940 -- the special record flag is set. This convention is also only
1941 -- permitted on record types (see AI95-00131).
1943 if Cname
= Name_C_Pass_By_Copy
then
1944 if Is_Record_Type
(E
) then
1945 Set_C_Pass_By_Copy
(Base_Type
(E
));
1946 elsif Is_Incomplete_Or_Private_Type
(E
)
1947 and then Is_Record_Type
(Underlying_Type
(E
))
1949 Set_C_Pass_By_Copy
(Base_Type
(Underlying_Type
(E
)));
1952 ("C_Pass_By_Copy convention allowed only for record type",
1957 -- If the entity is a derived boolean type, check for the
1958 -- special case of convention C, C++, or Fortran, where we
1959 -- consider any nonzero value to represent true.
1961 if Is_Discrete_Type
(E
)
1962 and then Root_Type
(Etype
(E
)) = Standard_Boolean
1968 C
= Convention_Fortran
)
1970 Set_Nonzero_Is_True
(Base_Type
(E
));
1972 end Set_Convention_From_Pragma
;
1974 -- Start of processing for Process_Convention
1977 Check_At_Least_N_Arguments
(2);
1978 Check_Arg_Is_Identifier
(Arg1
);
1979 Check_Optional_Identifier
(Arg1
, Name_Convention
);
1980 Cname
:= Chars
(Expression
(Arg1
));
1982 -- C_Pass_By_Copy is treated as a synonym for convention C
1983 -- (this is tested again below to set the critical flag)
1985 if Cname
= Name_C_Pass_By_Copy
then
1988 -- Otherwise we must have something in the standard convention list
1990 elsif Is_Convention_Name
(Cname
) then
1991 C
:= Get_Convention_Id
(Chars
(Expression
(Arg1
)));
1993 -- In DEC VMS, it seems that there is an undocumented feature
1994 -- that any unrecognized convention is treated as the default,
1995 -- which for us is convention C. It does not seem so terrible
1996 -- to do this unconditionally, silently in the VMS case, and
1997 -- with a warning in the non-VMS case.
2000 if Warn_On_Export_Import
and not OpenVMS_On_Target
then
2002 ("?unrecognized convention name, C assumed",
2009 Check_Arg_Is_Local_Name
(Arg2
);
2010 Check_Optional_Identifier
(Arg2
, Name_Entity
);
2012 Id
:= Expression
(Arg2
);
2015 if not Is_Entity_Name
(Id
) then
2016 Error_Pragma_Arg
("entity name required", Arg2
);
2021 -- Go to renamed subprogram if present, since convention applies
2022 -- to the actual renamed entity, not to the renaming entity.
2024 if Is_Subprogram
(E
)
2025 and then Present
(Alias
(E
))
2026 and then Nkind
(Parent
(Declaration_Node
(E
))) =
2027 N_Subprogram_Renaming_Declaration
2032 -- Check that we not applying this to a specless body
2034 if Is_Subprogram
(E
)
2035 and then Nkind
(Parent
(Declaration_Node
(E
))) = N_Subprogram_Body
2038 ("pragma% requires separate spec and must come before body");
2041 -- Check that we are not applying this to a named constant
2043 if Ekind
(E
) = E_Named_Integer
2045 Ekind
(E
) = E_Named_Real
2047 Error_Msg_Name_1
:= Chars
(N
);
2049 ("cannot apply pragma% to named constant!",
2050 Get_Pragma_Arg
(Arg2
));
2052 ("\supply appropriate type for&!", Arg2
);
2055 if Etype
(E
) = Any_Type
2056 or else Rep_Item_Too_Early
(E
, N
)
2060 E
:= Underlying_Type
(E
);
2063 if Rep_Item_Too_Late
(E
, N
) then
2067 if Has_Convention_Pragma
(E
) then
2069 ("at most one Convention/Export/Import pragma is allowed", Arg2
);
2071 elsif Convention
(E
) = Convention_Protected
2072 or else Ekind
(Scope
(E
)) = E_Protected_Type
2075 ("a protected operation cannot be given a different convention",
2079 -- For Intrinsic, a subprogram is required
2081 if C
= Convention_Intrinsic
2082 and then not Is_Subprogram
(E
)
2083 and then not Is_Generic_Subprogram
(E
)
2086 ("second argument of pragma% must be a subprogram", Arg2
);
2089 -- For Stdcall, a subprogram, variable or subprogram type is required
2091 if C
= Convention_Stdcall
2092 and then not Is_Subprogram
(E
)
2093 and then not Is_Generic_Subprogram
(E
)
2094 and then Ekind
(E
) /= E_Variable
2097 and then Ekind
(Designated_Type
(E
)) = E_Subprogram_Type
)
2100 ("second argument of pragma% must be subprogram (type)",
2104 if not Is_Subprogram
(E
)
2105 and then not Is_Generic_Subprogram
(E
)
2107 Set_Convention_From_Pragma
(E
);
2111 Check_First_Subtype
(Arg2
);
2112 Set_Convention_From_Pragma
(Base_Type
(E
));
2114 -- For subprograms, we must set the convention on the
2115 -- internally generated directly designated type as well.
2117 if Ekind
(E
) = E_Access_Subprogram_Type
then
2118 Set_Convention_From_Pragma
(Directly_Designated_Type
(E
));
2122 -- For the subprogram case, set proper convention for all homonyms
2123 -- in same scope and the same declarative part, i.e. the same
2124 -- compilation unit.
2127 Comp_Unit
:= Get_Source_Unit
(E
);
2128 Set_Convention_From_Pragma
(E
);
2130 -- Treat a pragma Import as an implicit body, for GPS use.
2132 if Prag_Id
= Pragma_Import
then
2133 Generate_Reference
(E
, Id
, 'b');
2139 exit when No
(E1
) or else Scope
(E1
) /= Current_Scope
;
2141 -- Note: below we are missing a check for Rep_Item_Too_Late.
2142 -- That is deliberate, we cannot chain the rep item on more
2143 -- than one Rep_Item chain, to be fixed later ???
2145 if Comes_From_Source
(E1
)
2146 and then Comp_Unit
= Get_Source_Unit
(E1
)
2147 and then Nkind
(Original_Node
(Parent
(E1
))) /=
2148 N_Full_Type_Declaration
2150 Set_Convention_From_Pragma
(E1
);
2152 if Prag_Id
= Pragma_Import
then
2153 Generate_Reference
(E
, Id
, 'b');
2158 end Process_Convention
;
2160 -----------------------------------------------------
2161 -- Process_Extended_Import_Export_Exception_Pragma --
2162 -----------------------------------------------------
2164 procedure Process_Extended_Import_Export_Exception_Pragma
2165 (Arg_Internal
: Node_Id
;
2166 Arg_External
: Node_Id
;
2176 if not OpenVMS_On_Target
then
2178 ("?pragma% ignored (applies only to Open'V'M'S)");
2181 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2182 Def_Id
:= Entity
(Arg_Internal
);
2184 if Ekind
(Def_Id
) /= E_Exception
then
2186 ("pragma% must refer to declared exception", Arg_Internal
);
2189 Set_Extended_Import_Export_External_Name
(Def_Id
, Arg_External
);
2191 if Present
(Arg_Form
) then
2192 Check_Arg_Is_One_Of
(Arg_Form
, Name_Ada
, Name_VMS
);
2195 if Present
(Arg_Form
)
2196 and then Chars
(Arg_Form
) = Name_Ada
2200 Set_Is_VMS_Exception
(Def_Id
);
2201 Set_Exception_Code
(Def_Id
, No_Uint
);
2204 if Present
(Arg_Code
) then
2205 if not Is_VMS_Exception
(Def_Id
) then
2207 ("Code option for pragma% not allowed for Ada case",
2211 Check_Arg_Is_Static_Expression
(Arg_Code
, Any_Integer
);
2212 Code_Val
:= Expr_Value
(Arg_Code
);
2214 if not UI_Is_In_Int_Range
(Code_Val
) then
2216 ("Code option for pragma% must be in 32-bit range",
2220 Set_Exception_Code
(Def_Id
, Code_Val
);
2223 end Process_Extended_Import_Export_Exception_Pragma
;
2225 -------------------------------------------------
2226 -- Process_Extended_Import_Export_Internal_Arg --
2227 -------------------------------------------------
2229 procedure Process_Extended_Import_Export_Internal_Arg
2230 (Arg_Internal
: Node_Id
:= Empty
)
2235 if No
(Arg_Internal
) then
2236 Error_Pragma
("Internal parameter required for pragma%");
2239 if Nkind
(Arg_Internal
) = N_Identifier
then
2242 elsif Nkind
(Arg_Internal
) = N_Operator_Symbol
2243 and then (Prag_Id
= Pragma_Import_Function
2245 Prag_Id
= Pragma_Export_Function
)
2251 ("wrong form for Internal parameter for pragma%", Arg_Internal
);
2254 Check_Arg_Is_Local_Name
(Arg_Internal
);
2255 end Process_Extended_Import_Export_Internal_Arg
;
2257 --------------------------------------------------
2258 -- Process_Extended_Import_Export_Object_Pragma --
2259 --------------------------------------------------
2261 procedure Process_Extended_Import_Export_Object_Pragma
2262 (Arg_Internal
: Node_Id
;
2263 Arg_External
: Node_Id
;
2269 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2270 Def_Id
:= Entity
(Arg_Internal
);
2272 if Ekind
(Def_Id
) /= E_Constant
2273 and then Ekind
(Def_Id
) /= E_Variable
2276 ("pragma% must designate an object", Arg_Internal
);
2279 if Is_Psected
(Def_Id
) then
2281 ("previous Psect_Object applies, pragma % not permitted",
2285 if Rep_Item_Too_Late
(Def_Id
, N
) then
2289 Set_Extended_Import_Export_External_Name
(Def_Id
, Arg_External
);
2291 if Present
(Arg_Size
) then
2292 Check_Arg_Is_External_Name
(Arg_Size
);
2295 -- Export_Object case
2297 if Prag_Id
= Pragma_Export_Object
then
2298 if not Is_Library_Level_Entity
(Def_Id
) then
2300 ("argument for pragma% must be library level entity",
2304 if Ekind
(Current_Scope
) = E_Generic_Package
then
2305 Error_Pragma
("pragma& cannot appear in a generic unit");
2308 if not Size_Known_At_Compile_Time
(Etype
(Def_Id
)) then
2310 ("exported object must have compile time known size",
2314 if Warn_On_Export_Import
and then Is_Exported
(Def_Id
) then
2316 ("?duplicate Export_Object pragma", N
);
2318 Set_Exported
(Def_Id
, Arg_Internal
);
2321 -- Import_Object case
2324 if Is_Concurrent_Type
(Etype
(Def_Id
)) then
2326 ("cannot use pragma% for task/protected object",
2330 if Ekind
(Def_Id
) = E_Constant
then
2332 ("cannot import a constant", Arg_Internal
);
2335 if Warn_On_Export_Import
2336 and then Has_Discriminants
(Etype
(Def_Id
))
2339 ("imported value must be initialized?", Arg_Internal
);
2342 if Warn_On_Export_Import
2343 and then Is_Access_Type
(Etype
(Def_Id
))
2346 ("cannot import object of an access type?", Arg_Internal
);
2349 if Warn_On_Export_Import
2350 and then Is_Imported
(Def_Id
)
2353 ("?duplicate Import_Object pragma", N
);
2355 -- Check for explicit initialization present. Note that an
2356 -- initialization that generated by the code generator, e.g.
2357 -- for an access type, does not count here.
2359 elsif Present
(Expression
(Parent
(Def_Id
)))
2362 (Original_Node
(Expression
(Parent
(Def_Id
))))
2364 Error_Msg_Sloc
:= Sloc
(Def_Id
);
2366 ("no initialization allowed for declaration of& #",
2367 "\imported entities cannot be initialized ('R'M' 'B.1(24))",
2370 Set_Imported
(Def_Id
);
2371 Note_Possible_Modification
(Arg_Internal
);
2374 end Process_Extended_Import_Export_Object_Pragma
;
2376 ------------------------------------------------------
2377 -- Process_Extended_Import_Export_Subprogram_Pragma --
2378 ------------------------------------------------------
2380 procedure Process_Extended_Import_Export_Subprogram_Pragma
2381 (Arg_Internal
: Node_Id
;
2382 Arg_External
: Node_Id
;
2383 Arg_Parameter_Types
: Node_Id
;
2384 Arg_Result_Type
: Node_Id
:= Empty
;
2385 Arg_Mechanism
: Node_Id
;
2386 Arg_Result_Mechanism
: Node_Id
:= Empty
;
2387 Arg_First_Optional_Parameter
: Node_Id
:= Empty
)
2393 Ambiguous
: Boolean;
2397 function Same_Base_Type
2399 Formal
: Entity_Id
) return Boolean;
2400 -- Determines if Ptype references the type of Formal. Note that
2401 -- only the base types need to match according to the spec. Ptype
2402 -- here is the argument from the pragma, which is either a type
2403 -- name, or an access attribute.
2405 --------------------
2406 -- Same_Base_Type --
2407 --------------------
2409 function Same_Base_Type
2411 Formal
: Entity_Id
) return Boolean
2413 Ftyp
: constant Entity_Id
:= Base_Type
(Etype
(Formal
));
2417 -- Case where pragma argument is typ'Access
2419 if Nkind
(Ptype
) = N_Attribute_Reference
2420 and then Attribute_Name
(Ptype
) = Name_Access
2422 Pref
:= Prefix
(Ptype
);
2425 if not Is_Entity_Name
(Pref
)
2426 or else Entity
(Pref
) = Any_Type
2431 -- We have a match if the corresponding argument is of an
2432 -- anonymous access type, and its designicated type matches
2433 -- the type of the prefix of the access attribute
2435 return Ekind
(Ftyp
) = E_Anonymous_Access_Type
2436 and then Base_Type
(Entity
(Pref
)) =
2437 Base_Type
(Etype
(Designated_Type
(Ftyp
)));
2439 -- Case where pragma argument is a type name
2444 if not Is_Entity_Name
(Ptype
)
2445 or else Entity
(Ptype
) = Any_Type
2450 -- We have a match if the corresponding argument is of
2451 -- the type given in the pragma (comparing base types)
2453 return Base_Type
(Entity
(Ptype
)) = Ftyp
;
2457 -- Start of processing for
2458 -- Process_Extended_Import_Export_Subprogram_Pragma
2461 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2462 Hom_Id
:= Entity
(Arg_Internal
);
2466 -- Loop through homonyms (overloadings) of Hom_Id
2468 while Present
(Hom_Id
) loop
2469 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
2471 -- We need a subprogram in the current scope
2473 if not Is_Subprogram
(Def_Id
)
2474 or else Scope
(Def_Id
) /= Current_Scope
2481 -- Pragma cannot apply to subprogram body
2483 if Is_Subprogram
(Def_Id
)
2486 (Declaration_Node
(Def_Id
))) = N_Subprogram_Body
2489 ("pragma% requires separate spec"
2490 & " and must come before body");
2493 -- Test result type if given, note that the result type
2494 -- parameter can only be present for the function cases.
2496 if Present
(Arg_Result_Type
)
2497 and then not Same_Base_Type
(Arg_Result_Type
, Def_Id
)
2501 elsif Etype
(Def_Id
) /= Standard_Void_Type
2503 (Chars
(N
) = Name_Export_Procedure
2504 or else Chars
(N
) = Name_Import_Procedure
)
2508 -- Test parameter types if given. Note that this parameter
2509 -- has not been analyzed (and must not be, since it is
2510 -- semantic nonsense), so we get it as the parser left it.
2512 elsif Present
(Arg_Parameter_Types
) then
2513 Check_Matching_Types
: declare
2518 Formal
:= First_Formal
(Def_Id
);
2520 if Nkind
(Arg_Parameter_Types
) = N_Null
then
2521 if Present
(Formal
) then
2525 -- A list of one type, e.g. (List) is parsed as
2526 -- a parenthesized expression.
2528 elsif Nkind
(Arg_Parameter_Types
) /= N_Aggregate
2529 and then Paren_Count
(Arg_Parameter_Types
) = 1
2532 or else Present
(Next_Formal
(Formal
))
2537 Same_Base_Type
(Arg_Parameter_Types
, Formal
);
2540 -- A list of more than one type is parsed as a aggregate
2542 elsif Nkind
(Arg_Parameter_Types
) = N_Aggregate
2543 and then Paren_Count
(Arg_Parameter_Types
) = 0
2545 Ptype
:= First
(Expressions
(Arg_Parameter_Types
));
2546 while Present
(Ptype
) or else Present
(Formal
) loop
2549 or else not Same_Base_Type
(Ptype
, Formal
)
2554 Next_Formal
(Formal
);
2559 -- Anything else is of the wrong form
2563 ("wrong form for Parameter_Types parameter",
2564 Arg_Parameter_Types
);
2566 end Check_Matching_Types
;
2569 -- Match is now False if the entry we found did not match
2570 -- either a supplied Parameter_Types or Result_Types argument
2576 -- Ambiguous case, the flag Ambiguous shows if we already
2577 -- detected this and output the initial messages.
2580 if not Ambiguous
then
2582 Error_Msg_Name_1
:= Chars
(N
);
2584 ("pragma% does not uniquely identify subprogram!",
2586 Error_Msg_Sloc
:= Sloc
(Ent
);
2587 Error_Msg_N
("matching subprogram #!", N
);
2591 Error_Msg_Sloc
:= Sloc
(Def_Id
);
2592 Error_Msg_N
("matching subprogram #!", N
);
2597 Hom_Id
:= Homonym
(Hom_Id
);
2600 -- See if we found an entry
2603 if not Ambiguous
then
2604 if Is_Generic_Subprogram
(Entity
(Arg_Internal
)) then
2606 ("pragma% cannot be given for generic subprogram");
2610 ("pragma% does not identify local subprogram");
2617 -- Import pragmas must be be for imported entities
2619 if Prag_Id
= Pragma_Import_Function
2621 Prag_Id
= Pragma_Import_Procedure
2623 Prag_Id
= Pragma_Import_Valued_Procedure
2625 if not Is_Imported
(Ent
) then
2627 ("pragma Import or Interface must precede pragma%");
2630 -- Here we have the Export case which can set the entity as exported
2632 -- But does not do so if the specified external name is null,
2633 -- since that is taken as a signal in DEC Ada 83 (with which
2634 -- we want to be compatible) to request no external name.
2636 elsif Nkind
(Arg_External
) = N_String_Literal
2637 and then String_Length
(Strval
(Arg_External
)) = 0
2641 -- In all other cases, set entit as exported
2644 Set_Exported
(Ent
, Arg_Internal
);
2647 -- Special processing for Valued_Procedure cases
2649 if Prag_Id
= Pragma_Import_Valued_Procedure
2651 Prag_Id
= Pragma_Export_Valued_Procedure
2653 Formal
:= First_Formal
(Ent
);
2657 ("at least one parameter required for pragma%");
2659 elsif Ekind
(Formal
) /= E_Out_Parameter
then
2661 ("first parameter must have mode out for pragma%");
2664 Set_Is_Valued_Procedure
(Ent
);
2668 Set_Extended_Import_Export_External_Name
(Ent
, Arg_External
);
2670 -- Process Result_Mechanism argument if present. We have already
2671 -- checked that this is only allowed for the function case.
2673 if Present
(Arg_Result_Mechanism
) then
2674 Set_Mechanism_Value
(Ent
, Arg_Result_Mechanism
);
2677 -- Process Mechanism parameter if present. Note that this parameter
2678 -- is not analyzed, and must not be analyzed since it is semantic
2679 -- nonsense, so we get it in exactly as the parser left it.
2681 if Present
(Arg_Mechanism
) then
2689 -- A single mechanism association without a formal parameter
2690 -- name is parsed as a parenthesized expression. All other
2691 -- cases are parsed as aggregates, so we rewrite the single
2692 -- parameter case as an aggregate for consistency.
2694 if Nkind
(Arg_Mechanism
) /= N_Aggregate
2695 and then Paren_Count
(Arg_Mechanism
) = 1
2697 Rewrite
(Arg_Mechanism
,
2698 Make_Aggregate
(Sloc
(Arg_Mechanism
),
2699 Expressions
=> New_List
(
2700 Relocate_Node
(Arg_Mechanism
))));
2703 -- Case of only mechanism name given, applies to all formals
2705 if Nkind
(Arg_Mechanism
) /= N_Aggregate
then
2706 Formal
:= First_Formal
(Ent
);
2707 while Present
(Formal
) loop
2708 Set_Mechanism_Value
(Formal
, Arg_Mechanism
);
2709 Next_Formal
(Formal
);
2712 -- Case of list of mechanism associations given
2715 if Null_Record_Present
(Arg_Mechanism
) then
2717 ("inappropriate form for Mechanism parameter",
2721 -- Deal with positional ones first
2723 Formal
:= First_Formal
(Ent
);
2724 if Present
(Expressions
(Arg_Mechanism
)) then
2725 Mname
:= First
(Expressions
(Arg_Mechanism
));
2727 while Present
(Mname
) loop
2730 ("too many mechanism associations", Mname
);
2733 Set_Mechanism_Value
(Formal
, Mname
);
2734 Next_Formal
(Formal
);
2739 -- Deal with named entries
2741 if Present
(Component_Associations
(Arg_Mechanism
)) then
2742 Massoc
:= First
(Component_Associations
(Arg_Mechanism
));
2744 while Present
(Massoc
) loop
2745 Choice
:= First
(Choices
(Massoc
));
2747 if Nkind
(Choice
) /= N_Identifier
2748 or else Present
(Next
(Choice
))
2751 ("incorrect form for mechanism association",
2755 Formal
:= First_Formal
(Ent
);
2759 ("parameter name & not present", Choice
);
2762 if Chars
(Choice
) = Chars
(Formal
) then
2764 (Formal
, Expression
(Massoc
));
2768 Next_Formal
(Formal
);
2778 -- Process First_Optional_Parameter argument if present. We have
2779 -- already checked that this is only allowed for the Import case.
2781 if Present
(Arg_First_Optional_Parameter
) then
2782 if Nkind
(Arg_First_Optional_Parameter
) /= N_Identifier
then
2784 ("first optional parameter must be formal parameter name",
2785 Arg_First_Optional_Parameter
);
2788 Formal
:= First_Formal
(Ent
);
2792 ("specified formal parameter& not found",
2793 Arg_First_Optional_Parameter
);
2796 exit when Chars
(Formal
) =
2797 Chars
(Arg_First_Optional_Parameter
);
2799 Next_Formal
(Formal
);
2802 Set_First_Optional_Parameter
(Ent
, Formal
);
2804 -- Check specified and all remaining formals have right form
2806 while Present
(Formal
) loop
2807 if Ekind
(Formal
) /= E_In_Parameter
then
2809 ("optional formal& is not of mode in!",
2810 Arg_First_Optional_Parameter
, Formal
);
2813 Dval
:= Default_Value
(Formal
);
2815 if not Present
(Dval
) then
2817 ("optional formal& does not have default value!",
2818 Arg_First_Optional_Parameter
, Formal
);
2820 elsif Compile_Time_Known_Value_Or_Aggr
(Dval
) then
2825 ("default value for optional formal& is non-static!",
2826 Arg_First_Optional_Parameter
, Formal
);
2830 Set_Is_Optional_Parameter
(Formal
);
2831 Next_Formal
(Formal
);
2834 end Process_Extended_Import_Export_Subprogram_Pragma
;
2836 --------------------------
2837 -- Process_Generic_List --
2838 --------------------------
2840 procedure Process_Generic_List
is
2846 Check_No_Identifiers
;
2847 Check_At_Least_N_Arguments
(1);
2850 while Present
(Arg
) loop
2851 Exp
:= Expression
(Arg
);
2854 if not Is_Entity_Name
(Exp
)
2856 (not Is_Generic_Instance
(Entity
(Exp
))
2858 not Is_Generic_Unit
(Entity
(Exp
)))
2861 ("pragma% argument must be name of generic unit/instance",
2867 end Process_Generic_List
;
2869 ---------------------------------
2870 -- Process_Import_Or_Interface --
2871 ---------------------------------
2873 procedure Process_Import_Or_Interface
is
2879 Process_Convention
(C
, Def_Id
);
2880 Kill_Size_Check_Code
(Def_Id
);
2881 Note_Possible_Modification
(Expression
(Arg2
));
2883 if Ekind
(Def_Id
) = E_Variable
2885 Ekind
(Def_Id
) = E_Constant
2887 -- User initialization is not allowed for imported object, but
2888 -- the object declaration may contain a default initialization,
2889 -- that will be discarded. Note that an explicit initialization
2890 -- only counts if it comes from source, otherwise it is simply
2891 -- the code generator making an implicit initialization explicit.
2893 if Present
(Expression
(Parent
(Def_Id
)))
2894 and then Comes_From_Source
(Expression
(Parent
(Def_Id
)))
2896 Error_Msg_Sloc
:= Sloc
(Def_Id
);
2898 ("no initialization allowed for declaration of& #",
2899 "\imported entities cannot be initialized ('R'M' 'B.1(24))",
2903 Set_Imported
(Def_Id
);
2904 Set_Is_Public
(Def_Id
);
2905 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
2907 -- pragma Import completes deferred constants
2909 if Ekind
(Def_Id
) = E_Constant
then
2910 Set_Has_Completion
(Def_Id
);
2913 -- It is not possible to import a constant of an unconstrained
2914 -- array type (e.g. string) because there is no simple way to
2915 -- write a meaningful subtype for it.
2917 if Is_Array_Type
(Etype
(Def_Id
))
2918 and then not Is_Constrained
(Etype
(Def_Id
))
2921 ("imported constant& must have a constrained subtype",
2926 elsif Is_Subprogram
(Def_Id
)
2927 or else Is_Generic_Subprogram
(Def_Id
)
2929 -- If the name is overloaded, pragma applies to all of the
2930 -- denoted entities in the same declarative part.
2934 while Present
(Hom_Id
) loop
2935 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
2937 -- Ignore inherited subprograms because the pragma will
2938 -- apply to the parent operation, which is the one called.
2940 if Is_Overloadable
(Def_Id
)
2941 and then Present
(Alias
(Def_Id
))
2945 -- If it is not a subprogram, it must be in an outer
2946 -- scope and pragma does not apply.
2948 elsif not Is_Subprogram
(Def_Id
)
2949 and then not Is_Generic_Subprogram
(Def_Id
)
2953 -- Verify that the homonym is in the same declarative
2954 -- part (not just the same scope).
2956 elsif Parent
(Unit_Declaration_Node
(Def_Id
)) /= Parent
(N
)
2957 and then Nkind
(Parent
(N
)) /= N_Compilation_Unit_Aux
2962 Set_Imported
(Def_Id
);
2964 -- If Import intrinsic, set intrinsic flag
2965 -- and verify that it is known as such.
2967 if C
= Convention_Intrinsic
then
2968 Set_Is_Intrinsic_Subprogram
(Def_Id
);
2969 Check_Intrinsic_Subprogram
2970 (Def_Id
, Expression
(Arg2
));
2973 -- All interfaced procedures need an external
2974 -- symbol created for them since they are
2975 -- always referenced from another object file.
2977 Set_Is_Public
(Def_Id
);
2979 -- Verify that the subprogram does not have a completion
2980 -- through a renaming declaration. For other completions
2981 -- the pragma appears as a too late representation.
2984 Decl
: constant Node_Id
:= Unit_Declaration_Node
(Def_Id
);
2988 and then Nkind
(Decl
) = N_Subprogram_Declaration
2989 and then Present
(Corresponding_Body
(Decl
))
2992 (Unit_Declaration_Node
2993 (Corresponding_Body
(Decl
))) =
2994 N_Subprogram_Renaming_Declaration
2996 Error_Msg_Sloc
:= Sloc
(Def_Id
);
2997 Error_Msg_NE
("cannot import&#," &
2998 " already completed by a renaming",
3003 Set_Has_Completion
(Def_Id
);
3004 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3007 if Is_Compilation_Unit
(Hom_Id
) then
3009 -- Its possible homonyms are not affected by the pragma.
3010 -- Such homonyms might be present in the context of other
3011 -- units being compiled.
3016 Hom_Id
:= Homonym
(Hom_Id
);
3020 -- When the convention is Java, we also allow Import to be given
3021 -- for packages, exceptions, and record components.
3023 elsif C
= Convention_Java
3025 (Ekind
(Def_Id
) = E_Package
3026 or else Ekind
(Def_Id
) = E_Exception
3027 or else Nkind
(Parent
(Def_Id
)) = N_Component_Declaration
)
3029 Set_Imported
(Def_Id
);
3030 Set_Is_Public
(Def_Id
);
3031 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3035 ("second argument of pragma% must be object or subprogram",
3039 -- If this pragma applies to a compilation unit, then the unit,
3040 -- which is a subprogram, does not require (or allow) a body.
3041 -- We also do not need to elaborate imported procedures.
3043 if Nkind
(Parent
(N
)) = N_Compilation_Unit_Aux
then
3045 Cunit
: constant Node_Id
:= Parent
(Parent
(N
));
3047 Set_Body_Required
(Cunit
, False);
3050 end Process_Import_Or_Interface
;
3052 --------------------
3053 -- Process_Inline --
3054 --------------------
3056 procedure Process_Inline
(Active
: Boolean) is
3062 Effective
: Boolean := False;
3064 procedure Make_Inline
(Subp
: Entity_Id
);
3065 -- Subp is the defining unit name of the subprogram
3066 -- declaration. Set the flag, as well as the flag in the
3067 -- corresponding body, if there is one present.
3069 procedure Set_Inline_Flags
(Subp
: Entity_Id
);
3070 -- Sets Is_Inlined and Has_Pragma_Inline flags for Subp
3072 function Cannot_Inline
(Subp
: Entity_Id
) return Boolean;
3073 -- Do not set the inline flag if body is available and contains
3074 -- exception handlers, to prevent undefined symbols at link time.
3075 -- Emit warning if front-end inlining is enabled and the pragma
3076 -- appears too late.
3082 function Cannot_Inline
(Subp
: Entity_Id
) return Boolean is
3083 Decl
: constant Node_Id
:= Unit_Declaration_Node
(Subp
);
3086 if Nkind
(Decl
) = N_Subprogram_Body
then
3089 (Exception_Handlers
(Handled_Statement_Sequence
(Decl
)));
3091 elsif Nkind
(Decl
) = N_Subprogram_Declaration
3092 and then Present
(Corresponding_Body
(Decl
))
3094 if Front_End_Inlining
3095 and then Analyzed
(Corresponding_Body
(Decl
))
3097 Error_Msg_N
("pragma appears too late, ignored?", N
);
3100 -- If the subprogram is a renaming as body, the body is
3101 -- just a call to the renamed subprogram, and inlining is
3102 -- trivially possible.
3105 Nkind
(Unit_Declaration_Node
(Corresponding_Body
(Decl
)))
3106 = N_Subprogram_Renaming_Declaration
3112 Present
(Exception_Handlers
3113 (Handled_Statement_Sequence
3114 (Unit_Declaration_Node
(Corresponding_Body
(Decl
)))));
3117 -- If body is not available, assume the best, the check is
3118 -- performed again when compiling enclosing package bodies.
3128 procedure Make_Inline
(Subp
: Entity_Id
) is
3129 Kind
: constant Entity_Kind
:= Ekind
(Subp
);
3130 Inner_Subp
: Entity_Id
:= Subp
;
3133 if Etype
(Subp
) = Any_Type
then
3136 elsif Cannot_Inline
(Subp
) then
3137 Applies
:= True; -- Do not treat as an error.
3140 -- Here we have a candidate for inlining, but we must exclude
3141 -- derived operations. Otherwise we will end up trying to
3142 -- inline a phantom declaration, and the result would be to
3143 -- drag in a body which has no direct inlining associated with
3144 -- it. That would not only be inefficient but would also result
3145 -- in the backend doing cross-unit inlining in cases where it
3146 -- was definitely inappropriate to do so.
3148 -- However, a simple Comes_From_Source test is insufficient,
3149 -- since we do want to allow inlining of generic instances,
3150 -- which also do not come from source. Predefined operators do
3151 -- not come from source but are not inlineable either.
3153 elsif not Comes_From_Source
(Subp
)
3154 and then not Is_Generic_Instance
(Subp
)
3155 and then Scope
(Subp
) /= Standard_Standard
3160 -- The referenced entity must either be the enclosing entity,
3161 -- or an entity declared within the current open scope.
3163 elsif Present
(Scope
(Subp
))
3164 and then Scope
(Subp
) /= Current_Scope
3165 and then Subp
/= Current_Scope
3168 ("argument of% must be entity in current scope", Assoc
);
3172 -- Processing for procedure, operator or function.
3173 -- If subprogram is aliased (as for an instance) indicate
3174 -- that the renamed entity (if declared in the same unit)
3177 if Is_Subprogram
(Subp
) then
3178 while Present
(Alias
(Inner_Subp
)) loop
3179 Inner_Subp
:= Alias
(Inner_Subp
);
3182 if In_Same_Source_Unit
(Subp
, Inner_Subp
) then
3183 Set_Inline_Flags
(Inner_Subp
);
3185 Decl
:= Parent
(Parent
(Inner_Subp
));
3187 if Nkind
(Decl
) = N_Subprogram_Declaration
3188 and then Present
(Corresponding_Body
(Decl
))
3190 Set_Inline_Flags
(Corresponding_Body
(Decl
));
3196 -- For a generic subprogram set flag as well, for use at
3197 -- the point of instantiation, to determine whether the
3198 -- body should be generated.
3200 elsif Is_Generic_Subprogram
(Subp
) then
3201 Set_Inline_Flags
(Subp
);
3204 -- Literals are by definition inlined
3206 elsif Kind
= E_Enumeration_Literal
then
3209 -- Anything else is an error
3213 ("expect subprogram name for pragma%", Assoc
);
3217 ----------------------
3218 -- Set_Inline_Flags --
3219 ----------------------
3221 procedure Set_Inline_Flags
(Subp
: Entity_Id
) is
3224 Set_Is_Inlined
(Subp
, True);
3227 if not Has_Pragma_Inline
(Subp
) then
3228 Set_Has_Pragma_Inline
(Subp
);
3229 Set_Next_Rep_Item
(N
, First_Rep_Item
(Subp
));
3230 Set_First_Rep_Item
(Subp
, N
);
3233 end Set_Inline_Flags
;
3235 -- Start of processing for Process_Inline
3238 Check_No_Identifiers
;
3239 Check_At_Least_N_Arguments
(1);
3242 Inline_Processing_Required
:= True;
3246 while Present
(Assoc
) loop
3247 Subp_Id
:= Expression
(Assoc
);
3251 if Is_Entity_Name
(Subp_Id
) then
3252 Subp
:= Entity
(Subp_Id
);
3254 if Subp
= Any_Id
then
3260 while Present
(Homonym
(Subp
))
3261 and then Scope
(Homonym
(Subp
)) = Current_Scope
3263 Make_Inline
(Homonym
(Subp
));
3264 Subp
:= Homonym
(Subp
);
3271 ("inappropriate argument for pragma%", Assoc
);
3274 and then Warn_On_Redundant_Constructs
3276 Error_Msg_NE
("pragma inline on& is redundant?",
3277 N
, Entity
(Subp_Id
));
3284 ----------------------------
3285 -- Process_Interface_Name --
3286 ----------------------------
3288 procedure Process_Interface_Name
3289 (Subprogram_Def
: Entity_Id
;
3295 String_Val
: String_Id
;
3297 procedure Check_Form_Of_Interface_Name
(SN
: Node_Id
);
3298 -- SN is a string literal node for an interface name. This routine
3299 -- performs some minimal checks that the name is reasonable. In
3300 -- particular that no spaces or other obviously incorrect characters
3301 -- appear. This is only a warning, since any characters are allowed.
3303 procedure Check_Form_Of_Interface_Name
(SN
: Node_Id
) is
3304 S
: constant String_Id
:= Strval
(Expr_Value_S
(SN
));
3305 SL
: constant Nat
:= String_Length
(S
);
3310 Error_Msg_N
("interface name cannot be null string", SN
);
3313 for J
in 1 .. SL
loop
3314 C
:= Get_String_Char
(S
, J
);
3316 if Warn_On_Export_Import
3317 and then (not In_Character_Range
(C
)
3318 or else Get_Character
(C
) = ' '
3319 or else Get_Character
(C
) = ',')
3322 ("?interface name contains illegal character", SN
);
3325 end Check_Form_Of_Interface_Name
;
3327 -- Start of processing for Process_Interface_Name
3330 if No
(Link_Arg
) then
3331 if No
(Ext_Arg
) then
3334 elsif Chars
(Ext_Arg
) = Name_Link_Name
then
3336 Link_Nam
:= Expression
(Ext_Arg
);
3339 Check_Optional_Identifier
(Ext_Arg
, Name_External_Name
);
3340 Ext_Nam
:= Expression
(Ext_Arg
);
3345 Check_Optional_Identifier
(Ext_Arg
, Name_External_Name
);
3346 Check_Optional_Identifier
(Link_Arg
, Name_Link_Name
);
3347 Ext_Nam
:= Expression
(Ext_Arg
);
3348 Link_Nam
:= Expression
(Link_Arg
);
3351 -- Check expressions for external name and link name are static
3353 if Present
(Ext_Nam
) then
3354 Check_Arg_Is_Static_Expression
(Ext_Nam
, Standard_String
);
3355 Check_Form_Of_Interface_Name
(Ext_Nam
);
3357 -- Verify that the external name is not the name of a local
3358 -- entity, which would hide the imported one and lead to
3359 -- run-time surprises. The problem can only arise for entities
3360 -- declared in a package body (otherwise the external name is
3361 -- fully qualified and won't conflict).
3369 if Prag_Id
= Pragma_Import
then
3370 String_To_Name_Buffer
(Strval
(Expr_Value_S
(Ext_Nam
)));
3372 E
:= Entity_Id
(Get_Name_Table_Info
(Nam
));
3374 if Nam
/= Chars
(Subprogram_Def
)
3375 and then Present
(E
)
3376 and then not Is_Overloadable
(E
)
3377 and then Is_Immediately_Visible
(E
)
3378 and then not Is_Imported
(E
)
3379 and then Ekind
(Scope
(E
)) = E_Package
3383 while Present
(Par
) loop
3384 if Nkind
(Par
) = N_Package_Body
then
3385 Error_Msg_Sloc
:= Sloc
(E
);
3387 ("imported entity is hidden by & declared#",
3392 Par
:= Parent
(Par
);
3399 if Present
(Link_Nam
) then
3400 Check_Arg_Is_Static_Expression
(Link_Nam
, Standard_String
);
3401 Check_Form_Of_Interface_Name
(Link_Nam
);
3404 -- If there is no link name, just set the external name
3406 if No
(Link_Nam
) then
3407 Link_Nam
:= Adjust_External_Name_Case
(Expr_Value_S
(Ext_Nam
));
3409 -- For the Link_Name case, the given literal is preceded by an
3410 -- asterisk, which indicates to GCC that the given name should
3411 -- be taken literally, and in particular that no prepending of
3412 -- underlines should occur, even in systems where this is the
3417 Store_String_Char
(Get_Char_Code
('*'));
3418 String_Val
:= Strval
(Expr_Value_S
(Link_Nam
));
3420 for J
in 1 .. String_Length
(String_Val
) loop
3421 Store_String_Char
(Get_String_Char
(String_Val
, J
));
3425 Make_String_Literal
(Sloc
(Link_Nam
), End_String
);
3428 Set_Encoded_Interface_Name
3429 (Get_Base_Subprogram
(Subprogram_Def
), Link_Nam
);
3430 Check_Duplicated_Export_Name
(Link_Nam
);
3431 end Process_Interface_Name
;
3433 -----------------------------------------
3434 -- Process_Interrupt_Or_Attach_Handler --
3435 -----------------------------------------
3437 procedure Process_Interrupt_Or_Attach_Handler
is
3438 Arg1_X
: constant Node_Id
:= Expression
(Arg1
);
3439 Handler_Proc
: constant Entity_Id
:= Entity
(Arg1_X
);
3440 Proc_Scope
: constant Entity_Id
:= Scope
(Handler_Proc
);
3443 Set_Is_Interrupt_Handler
(Handler_Proc
);
3445 -- If the pragma is not associated with a handler procedure
3446 -- within a protected type, then it must be for a nonprotected
3447 -- procedure for the AAMP target, in which case we don't
3448 -- associate a representation item with the procedure's scope.
3450 if Ekind
(Proc_Scope
) = E_Protected_Type
then
3451 if Prag_Id
= Pragma_Interrupt_Handler
3453 Prag_Id
= Pragma_Attach_Handler
3455 Record_Rep_Item
(Proc_Scope
, N
);
3458 end Process_Interrupt_Or_Attach_Handler
;
3460 --------------------------------------------------
3461 -- Process_Restrictions_Or_Restriction_Warnings --
3462 --------------------------------------------------
3464 procedure Process_Restrictions_Or_Restriction_Warnings
is
3466 R_Id
: Restriction_Id
;
3471 procedure Set_Warning
(R
: All_Restrictions
);
3472 -- If this is a Restriction_Warnings pragma, set warning flag,
3473 -- otherwise reset the flag.
3479 procedure Set_Warning
(R
: All_Restrictions
) is
3481 if Prag_Id
= Pragma_Restriction_Warnings
then
3482 Restriction_Warnings
(R
) := True;
3484 Restriction_Warnings
(R
) := False;
3488 -- Start of processing for Process_Restrictions_Or_Restriction_Warnings
3491 Check_Ada_83_Warning
;
3492 Check_At_Least_N_Arguments
(1);
3493 Check_Valid_Configuration_Pragma
;
3496 while Present
(Arg
) loop
3498 Expr
:= Expression
(Arg
);
3500 -- Case of no restriction identifier present
3502 if Id
= No_Name
then
3503 if Nkind
(Expr
) /= N_Identifier
then
3505 ("invalid form for restriction", Arg
);
3510 (Process_Restriction_Synonyms
(Expr
));
3512 if R_Id
not in All_Boolean_Restrictions
then
3514 ("invalid restriction identifier", Arg
);
3517 if Implementation_Restriction
(R_Id
) then
3519 (No_Implementation_Restrictions
, Arg
);
3522 Set_Restriction
(R_Id
, N
);
3525 -- A very special case that must be processed here:
3526 -- pragma Restrictions (No_Exceptions) turns off
3527 -- all run-time checking. This is a bit dubious in
3528 -- terms of the formal language definition, but it
3529 -- is what is intended by RM H.4(12).
3531 if R_Id
= No_Exceptions
then
3532 Scope_Suppress
:= (others => True);
3535 -- Case of restriction identifier present
3538 R_Id
:= Get_Restriction_Id
(Process_Restriction_Synonyms
(Arg
));
3539 Analyze_And_Resolve
(Expr
, Any_Integer
);
3541 if R_Id
not in All_Parameter_Restrictions
then
3543 ("invalid restriction parameter identifier", Arg
);
3545 elsif not Is_OK_Static_Expression
(Expr
) then
3546 Flag_Non_Static_Expr
3547 ("value must be static expression!", Expr
);
3550 elsif not Is_Integer_Type
(Etype
(Expr
))
3551 or else Expr_Value
(Expr
) < 0
3554 ("value must be non-negative integer", Arg
);
3556 -- Restriction pragma is active
3559 Val
:= Expr_Value
(Expr
);
3561 if not UI_Is_In_Int_Range
(Val
) then
3563 ("pragma ignored, value too large?", Arg
);
3565 Set_Restriction
(R_Id
, N
, Integer (UI_To_Int
(Val
)));
3573 end Process_Restrictions_Or_Restriction_Warnings
;
3575 ---------------------------------
3576 -- Process_Suppress_Unsuppress --
3577 ---------------------------------
3579 -- Note: this procedure makes entries in the check suppress data
3580 -- structures managed by Sem. See spec of package Sem for full
3581 -- details on how we handle recording of check suppression.
3583 procedure Process_Suppress_Unsuppress
(Suppress_Case
: Boolean) is
3588 In_Package_Spec
: constant Boolean :=
3589 (Ekind
(Current_Scope
) = E_Package
3591 Ekind
(Current_Scope
) = E_Generic_Package
)
3592 and then not In_Package_Body
(Current_Scope
);
3594 procedure Suppress_Unsuppress_Echeck
(E
: Entity_Id
; C
: Check_Id
);
3595 -- Used to suppress a single check on the given entity
3597 --------------------------------
3598 -- Suppress_Unsuppress_Echeck --
3599 --------------------------------
3601 procedure Suppress_Unsuppress_Echeck
(E
: Entity_Id
; C
: Check_Id
) is
3602 ESR
: constant Entity_Check_Suppress_Record
:=
3605 Suppress
=> Suppress_Case
);
3608 Set_Checks_May_Be_Suppressed
(E
);
3610 if In_Package_Spec
then
3611 Global_Entity_Suppress
.Append
(ESR
);
3613 Local_Entity_Suppress
.Append
(ESR
);
3616 -- If this is a first subtype, and the base type is distinct,
3617 -- then also set the suppress flags on the base type.
3619 if Is_First_Subtype
(E
)
3620 and then Etype
(E
) /= E
3622 Suppress_Unsuppress_Echeck
(Etype
(E
), C
);
3624 end Suppress_Unsuppress_Echeck
;
3626 -- Start of processing for Process_Suppress_Unsuppress
3629 -- Suppress/Unsuppress can appear as a configuration pragma,
3630 -- or in a declarative part or a package spec (RM 11.5(5))
3632 if not Is_Configuration_Pragma
then
3633 Check_Is_In_Decl_Part_Or_Package_Spec
;
3636 Check_At_Least_N_Arguments
(1);
3637 Check_At_Most_N_Arguments
(2);
3638 Check_No_Identifier
(Arg1
);
3639 Check_Arg_Is_Identifier
(Arg1
);
3641 if not Is_Check_Name
(Chars
(Expression
(Arg1
))) then
3643 ("argument of pragma% is not valid check name", Arg1
);
3645 C
:= Get_Check_Id
(Chars
(Expression
(Arg1
)));
3648 if Arg_Count
= 1 then
3650 -- Make an entry in the local scope suppress table. This is the
3651 -- table that directly shows the current value of the scope
3652 -- suppress check for any check id value.
3654 if C
= All_Checks
then
3655 for J
in Scope_Suppress
'Range loop
3656 Scope_Suppress
(J
) := Suppress_Case
;
3659 Scope_Suppress
(C
) := Suppress_Case
;
3662 -- Also make an entry in the Local_Entity_Suppress table. See
3663 -- extended description in the package spec of Sem for details.
3665 Local_Entity_Suppress
.Append
3668 Suppress
=> Suppress_Case
));
3670 -- Case of two arguments present, where the check is
3671 -- suppressed for a specified entity (given as the second
3672 -- argument of the pragma)
3675 Check_Optional_Identifier
(Arg2
, Name_On
);
3676 E_Id
:= Expression
(Arg2
);
3679 if not Is_Entity_Name
(E_Id
) then
3681 ("second argument of pragma% must be entity name", Arg2
);
3690 -- Enforce RM 11.5(7) which requires that for a pragma that
3691 -- appears within a package spec, the named entity must be
3692 -- within the package spec. We allow the package name itself
3693 -- to be mentioned since that makes sense, although it is not
3694 -- strictly allowed by 11.5(7).
3697 and then E
/= Current_Scope
3698 and then Scope
(E
) /= Current_Scope
3701 ("entity in pragma% is not in package spec ('R'M 11.5(7))",
3705 -- Loop through homonyms. As noted below, in the case of a package
3706 -- spec, only homonyms within the package spec are considered.
3709 Suppress_Unsuppress_Echeck
(E
, C
);
3711 if Is_Generic_Instance
(E
)
3712 and then Is_Subprogram
(E
)
3713 and then Present
(Alias
(E
))
3715 Suppress_Unsuppress_Echeck
(Alias
(E
), C
);
3718 -- Move to next homonym
3723 -- If we are within a package specification, the
3724 -- pragma only applies to homonyms in the same scope.
3726 exit when In_Package_Spec
3727 and then Scope
(E
) /= Current_Scope
;
3730 end Process_Suppress_Unsuppress
;
3736 procedure Set_Exported
(E
: Entity_Id
; Arg
: Node_Id
) is
3738 if Is_Imported
(E
) then
3740 ("cannot export entity& that was previously imported", Arg
);
3742 elsif Present
(Address_Clause
(E
)) then
3744 ("cannot export entity& that has an address clause", Arg
);
3747 Set_Is_Exported
(E
);
3749 -- Generate a reference for entity explicitly, because the
3750 -- identifier may be overloaded and name resolution will not
3753 Generate_Reference
(E
, Arg
);
3755 -- Deal with exporting non-library level entity
3757 if not Is_Library_Level_Entity
(E
) then
3759 -- Not allowed at all for subprograms
3761 if Is_Subprogram
(E
) then
3762 Error_Pragma_Arg
("local subprogram& cannot be exported", Arg
);
3764 -- Otherwise set public and statically allocated
3768 Set_Is_Statically_Allocated
(E
);
3770 -- Warn if the corresponding W flag is set and the pragma
3771 -- comes from source. The latter may not be true e.g. on
3772 -- VMS where we expand export pragmas for exception codes
3773 -- associated with imported or exported exceptions. We do
3774 -- not want to generate a warning for something that the
3775 -- user did not write.
3777 if Warn_On_Export_Import
3778 and then Comes_From_Source
(Arg
)
3781 ("?& has been made static as a result of Export", Arg
, E
);
3783 ("\this usage is non-standard and non-portable", Arg
);
3788 if Warn_On_Export_Import
and then Is_Type
(E
) then
3790 ("exporting a type has no effect?", Arg
, E
);
3793 if Warn_On_Export_Import
and Inside_A_Generic
then
3795 ("all instances of& will have the same external name?", Arg
, E
);
3799 ----------------------------------------------
3800 -- Set_Extended_Import_Export_External_Name --
3801 ----------------------------------------------
3803 procedure Set_Extended_Import_Export_External_Name
3804 (Internal_Ent
: Entity_Id
;
3805 Arg_External
: Node_Id
)
3807 Old_Name
: constant Node_Id
:= Interface_Name
(Internal_Ent
);
3811 if No
(Arg_External
) then
3815 Check_Arg_Is_External_Name
(Arg_External
);
3817 if Nkind
(Arg_External
) = N_String_Literal
then
3818 if String_Length
(Strval
(Arg_External
)) = 0 then
3821 New_Name
:= Adjust_External_Name_Case
(Arg_External
);
3824 elsif Nkind
(Arg_External
) = N_Identifier
then
3825 New_Name
:= Get_Default_External_Name
(Arg_External
);
3827 -- Check_Arg_Is_External_Name should let through only
3828 -- identifiers and string literals or static string
3829 -- expressions (which are folded to string literals).
3832 raise Program_Error
;
3835 -- If we already have an external name set (by a prior normal
3836 -- Import or Export pragma), then the external names must match
3838 if Present
(Interface_Name
(Internal_Ent
)) then
3840 S1
: constant String_Id
:= Strval
(Old_Name
);
3841 S2
: constant String_Id
:= Strval
(New_Name
);
3844 -- Called if names do not match
3846 procedure Mismatch
is
3848 Error_Msg_Sloc
:= Sloc
(Old_Name
);
3850 ("external name does not match that given #",
3855 if String_Length
(S1
) /= String_Length
(S2
) then
3859 for J
in 1 .. String_Length
(S1
) loop
3860 if Get_String_Char
(S1
, J
) /= Get_String_Char
(S2
, J
) then
3867 -- Otherwise set the given name
3870 Set_Encoded_Interface_Name
(Internal_Ent
, New_Name
);
3871 Check_Duplicated_Export_Name
(New_Name
);
3873 end Set_Extended_Import_Export_External_Name
;
3879 procedure Set_Imported
(E
: Entity_Id
) is
3881 Error_Msg_Sloc
:= Sloc
(E
);
3883 if Is_Exported
(E
) or else Is_Imported
(E
) then
3884 Error_Msg_NE
("import of& declared# not allowed", N
, E
);
3886 if Is_Exported
(E
) then
3887 Error_Msg_N
("\entity was previously exported", N
);
3889 Error_Msg_N
("\entity was previously imported", N
);
3892 Error_Pragma
("\(pragma% applies to all previous entities)");
3895 Set_Is_Imported
(E
);
3897 -- If the entity is an object that is not at the library
3898 -- level, then it is statically allocated. We do not worry
3899 -- about objects with address clauses in this context since
3900 -- they are not really imported in the linker sense.
3903 and then not Is_Library_Level_Entity
(E
)
3904 and then No
(Address_Clause
(E
))
3906 Set_Is_Statically_Allocated
(E
);
3911 -------------------------
3912 -- Set_Mechanism_Value --
3913 -------------------------
3915 -- Note: the mechanism name has not been analyzed (and cannot indeed
3916 -- be analyzed, since it is semantic nonsense), so we get it in the
3917 -- exact form created by the parser.
3919 procedure Set_Mechanism_Value
(Ent
: Entity_Id
; Mech_Name
: Node_Id
) is
3923 procedure Bad_Class
;
3924 -- Signal bad descriptor class name
3926 procedure Bad_Mechanism
;
3927 -- Signal bad mechanism name
3929 procedure Bad_Class
is
3931 Error_Pragma_Arg
("unrecognized descriptor class name", Class
);
3934 procedure Bad_Mechanism
is
3936 Error_Pragma_Arg
("unrecognized mechanism name", Mech_Name
);
3939 -- Start of processing for Set_Mechanism_Value
3942 if Mechanism
(Ent
) /= Default_Mechanism
then
3944 ("mechanism for & has already been set", Mech_Name
, Ent
);
3947 -- MECHANISM_NAME ::= value | reference | descriptor
3949 if Nkind
(Mech_Name
) = N_Identifier
then
3950 if Chars
(Mech_Name
) = Name_Value
then
3951 Set_Mechanism
(Ent
, By_Copy
);
3954 elsif Chars
(Mech_Name
) = Name_Reference
then
3955 Set_Mechanism
(Ent
, By_Reference
);
3958 elsif Chars
(Mech_Name
) = Name_Descriptor
then
3959 Check_VMS
(Mech_Name
);
3960 Set_Mechanism
(Ent
, By_Descriptor
);
3963 elsif Chars
(Mech_Name
) = Name_Copy
then
3965 ("bad mechanism name, Value assumed", Mech_Name
);
3971 -- MECHANISM_NAME ::= descriptor (CLASS_NAME)
3972 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
3974 -- Note: this form is parsed as an indexed component
3976 elsif Nkind
(Mech_Name
) = N_Indexed_Component
then
3977 Class
:= First
(Expressions
(Mech_Name
));
3979 if Nkind
(Prefix
(Mech_Name
)) /= N_Identifier
3980 or else Chars
(Prefix
(Mech_Name
)) /= Name_Descriptor
3981 or else Present
(Next
(Class
))
3986 -- MECHANISM_NAME ::= descriptor (Class => CLASS_NAME)
3987 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
3989 -- Note: this form is parsed as a function call
3991 elsif Nkind
(Mech_Name
) = N_Function_Call
then
3993 Param
:= First
(Parameter_Associations
(Mech_Name
));
3995 if Nkind
(Name
(Mech_Name
)) /= N_Identifier
3996 or else Chars
(Name
(Mech_Name
)) /= Name_Descriptor
3997 or else Present
(Next
(Param
))
3998 or else No
(Selector_Name
(Param
))
3999 or else Chars
(Selector_Name
(Param
)) /= Name_Class
4003 Class
:= Explicit_Actual_Parameter
(Param
);
4010 -- Fall through here with Class set to descriptor class name
4012 Check_VMS
(Mech_Name
);
4014 if Nkind
(Class
) /= N_Identifier
then
4017 elsif Chars
(Class
) = Name_UBS
then
4018 Set_Mechanism
(Ent
, By_Descriptor_UBS
);
4020 elsif Chars
(Class
) = Name_UBSB
then
4021 Set_Mechanism
(Ent
, By_Descriptor_UBSB
);
4023 elsif Chars
(Class
) = Name_UBA
then
4024 Set_Mechanism
(Ent
, By_Descriptor_UBA
);
4026 elsif Chars
(Class
) = Name_S
then
4027 Set_Mechanism
(Ent
, By_Descriptor_S
);
4029 elsif Chars
(Class
) = Name_SB
then
4030 Set_Mechanism
(Ent
, By_Descriptor_SB
);
4032 elsif Chars
(Class
) = Name_A
then
4033 Set_Mechanism
(Ent
, By_Descriptor_A
);
4035 elsif Chars
(Class
) = Name_NCA
then
4036 Set_Mechanism
(Ent
, By_Descriptor_NCA
);
4042 end Set_Mechanism_Value
;
4044 ---------------------------
4045 -- Set_Ravenscar_Profile --
4046 ---------------------------
4048 -- The tasks to be done here are
4050 -- Set required policies
4052 -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
4053 -- pragma Locking_Policy (Ceiling_Locking)
4055 -- Set Detect_Blocking mode
4057 -- Set required restrictions (see System.Rident for detailed list)
4059 procedure Set_Ravenscar_Profile
(N
: Node_Id
) is
4061 -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
4063 if Task_Dispatching_Policy
/= ' '
4064 and then Task_Dispatching_Policy
/= 'F'
4066 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
4067 Error_Pragma
("Profile (Ravenscar) incompatible with policy#");
4069 -- Set the FIFO_Within_Priorities policy, but always
4070 -- preserve System_Location since we like the error
4071 -- message with the run time name.
4074 Task_Dispatching_Policy
:= 'F';
4076 if Task_Dispatching_Policy_Sloc
/= System_Location
then
4077 Task_Dispatching_Policy_Sloc
:= Loc
;
4081 -- pragma Locking_Policy (Ceiling_Locking)
4083 if Locking_Policy
/= ' '
4084 and then Locking_Policy
/= 'C'
4086 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
4087 Error_Pragma
("Profile (Ravenscar) incompatible with policy#");
4089 -- Set the Ceiling_Locking policy, but always preserve
4090 -- System_Location since we like the error message with the
4094 Locking_Policy
:= 'C';
4096 if Locking_Policy_Sloc
/= System_Location
then
4097 Locking_Policy_Sloc
:= Loc
;
4101 -- pragma Detect_Blocking
4103 Detect_Blocking
:= True;
4105 -- Set the corresponding restrictions
4107 Set_Profile_Restrictions
(Ravenscar
, N
, Warn
=> False);
4108 end Set_Ravenscar_Profile
;
4110 -- Start of processing for Analyze_Pragma
4113 if not Is_Pragma_Name
(Chars
(N
)) then
4114 if Warn_On_Unrecognized_Pragma
then
4115 Error_Pragma
("unrecognized pragma%!?");
4120 Prag_Id
:= Get_Pragma_Id
(Chars
(N
));
4130 if Present
(Pragma_Argument_Associations
(N
)) then
4131 Arg1
:= First
(Pragma_Argument_Associations
(N
));
4133 if Present
(Arg1
) then
4134 Arg2
:= Next
(Arg1
);
4136 if Present
(Arg2
) then
4137 Arg3
:= Next
(Arg2
);
4139 if Present
(Arg3
) then
4140 Arg4
:= Next
(Arg3
);
4146 -- Count number of arguments
4153 while Present
(Arg_Node
) loop
4154 Arg_Count
:= Arg_Count
+ 1;
4159 -- An enumeration type defines the pragmas that are supported by the
4160 -- implementation. Get_Pragma_Id (in package Prag) transorms a name
4161 -- into the corresponding enumeration value for the following case.
4169 -- pragma Abort_Defer;
4171 when Pragma_Abort_Defer
=>
4173 Check_Arg_Count
(0);
4175 -- The only required semantic processing is to check the
4176 -- placement. This pragma must appear at the start of the
4177 -- statement sequence of a handled sequence of statements.
4179 if Nkind
(Parent
(N
)) /= N_Handled_Sequence_Of_Statements
4180 or else N
/= First
(Statements
(Parent
(N
)))
4191 -- Note: this pragma also has some specific processing in Par.Prag
4192 -- because we want to set the Ada version mode during parsing.
4194 when Pragma_Ada_83
=>
4196 Ada_Version
:= Ada_83
;
4197 Check_Arg_Count
(0);
4205 -- Note: this pragma also has some specific processing in Par.Prag
4206 -- because we want to set the Ada 83 version mode during parsing.
4208 when Pragma_Ada_95
=>
4210 Ada_Version
:= Ada_95
;
4211 Check_Arg_Count
(0);
4219 -- Note: this pragma also has some specific processing in Par.Prag
4220 -- because we want to set the Ada 83 version mode during parsing.
4222 when Pragma_Ada_05
=>
4224 Ada_Version
:= Ada_05
;
4225 Check_Arg_Count
(0);
4227 ----------------------
4228 -- All_Calls_Remote --
4229 ----------------------
4231 -- pragma All_Calls_Remote [(library_package_NAME)];
4233 when Pragma_All_Calls_Remote
=> All_Calls_Remote
: declare
4234 Lib_Entity
: Entity_Id
;
4237 Check_Ada_83_Warning
;
4238 Check_Valid_Library_Unit_Pragma
;
4240 if Nkind
(N
) = N_Null_Statement
then
4244 Lib_Entity
:= Find_Lib_Unit_Name
;
4246 -- This pragma should only apply to a RCI unit (RM E.2.3(23)).
4248 if Present
(Lib_Entity
)
4249 and then not Debug_Flag_U
4251 if not Is_Remote_Call_Interface
(Lib_Entity
) then
4252 Error_Pragma
("pragma% only apply to rci unit");
4254 -- Set flag for entity of the library unit
4257 Set_Has_All_Calls_Remote
(Lib_Entity
);
4261 end All_Calls_Remote
;
4267 -- pragma Annotate (IDENTIFIER {, ARG});
4268 -- ARG ::= NAME | EXPRESSION
4270 when Pragma_Annotate
=> Annotate
: begin
4272 Check_At_Least_N_Arguments
(1);
4273 Check_Arg_Is_Identifier
(Arg1
);
4276 Arg
: Node_Id
:= Arg2
;
4280 while Present
(Arg
) loop
4281 Exp
:= Expression
(Arg
);
4284 if Is_Entity_Name
(Exp
) then
4287 elsif Nkind
(Exp
) = N_String_Literal
then
4288 Resolve
(Exp
, Standard_String
);
4290 elsif Is_Overloaded
(Exp
) then
4291 Error_Pragma_Arg
("ambiguous argument for pragma%", Exp
);
4306 -- pragma Assert (Boolean_EXPRESSION [, static_string_EXPRESSION]);
4308 when Pragma_Assert
=>
4310 Check_No_Identifiers
;
4312 if Arg_Count
> 1 then
4313 Check_Arg_Count
(2);
4314 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
4317 -- If expansion is active and assertions are inactive, then
4318 -- we rewrite the Assertion as:
4320 -- if False and then condition then
4324 -- The reason we do this rewriting during semantic analysis
4325 -- rather than as part of normal expansion is that we cannot
4326 -- analyze and expand the code for the boolean expression
4327 -- directly, or it may cause insertion of actions that would
4328 -- escape the attempt to suppress the assertion code.
4330 if Expander_Active
and not Assertions_Enabled
then
4332 Make_If_Statement
(Loc
,
4335 Left_Opnd
=> New_Occurrence_Of
(Standard_False
, Loc
),
4336 Right_Opnd
=> Get_Pragma_Arg
(Arg1
)),
4337 Then_Statements
=> New_List
(
4338 Make_Null_Statement
(Loc
))));
4342 -- Otherwise (if assertions are enabled, or if we are not
4343 -- operating with expansion active), then we just analyze
4344 -- and resolve the expression.
4347 Analyze_And_Resolve
(Expression
(Arg1
), Any_Boolean
);
4354 -- pragma AST_Entry (entry_IDENTIFIER);
4356 when Pragma_AST_Entry
=> AST_Entry
: declare
4362 Check_Arg_Count
(1);
4363 Check_No_Identifiers
;
4364 Check_Arg_Is_Local_Name
(Arg1
);
4365 Ent
:= Entity
(Expression
(Arg1
));
4367 -- Note: the implementation of the AST_Entry pragma could handle
4368 -- the entry family case fine, but for now we are consistent with
4369 -- the DEC rules, and do not allow the pragma, which of course
4370 -- has the effect of also forbidding the attribute.
4372 if Ekind
(Ent
) /= E_Entry
then
4374 ("pragma% argument must be simple entry name", Arg1
);
4376 elsif Is_AST_Entry
(Ent
) then
4378 ("duplicate % pragma for entry", Arg1
);
4380 elsif Has_Homonym
(Ent
) then
4382 ("pragma% argument cannot specify overloaded entry", Arg1
);
4386 FF
: constant Entity_Id
:= First_Formal
(Ent
);
4389 if Present
(FF
) then
4390 if Present
(Next_Formal
(FF
)) then
4392 ("entry for pragma% can have only one argument",
4395 elsif Parameter_Mode
(FF
) /= E_In_Parameter
then
4397 ("entry parameter for pragma% must have mode IN",
4403 Set_Is_AST_Entry
(Ent
);
4411 -- pragma Asynchronous (LOCAL_NAME);
4413 when Pragma_Asynchronous
=> Asynchronous
: declare
4421 procedure Process_Async_Pragma
;
4422 -- Common processing for procedure and access-to-procedure case
4424 --------------------------
4425 -- Process_Async_Pragma --
4426 --------------------------
4428 procedure Process_Async_Pragma
is
4430 if not Present
(L
) then
4431 Set_Is_Asynchronous
(Nm
);
4435 -- The formals should be of mode IN (RM E.4.1(6))
4438 while Present
(S
) loop
4439 Formal
:= Defining_Identifier
(S
);
4441 if Nkind
(Formal
) = N_Defining_Identifier
4442 and then Ekind
(Formal
) /= E_In_Parameter
4445 ("pragma% procedure can only have IN parameter",
4452 Set_Is_Asynchronous
(Nm
);
4453 end Process_Async_Pragma
;
4455 -- Start of processing for pragma Asynchronous
4458 Check_Ada_83_Warning
;
4459 Check_No_Identifiers
;
4460 Check_Arg_Count
(1);
4461 Check_Arg_Is_Local_Name
(Arg1
);
4463 if Debug_Flag_U
then
4467 C_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
4468 Analyze
(Expression
(Arg1
));
4469 Nm
:= Entity
(Expression
(Arg1
));
4471 if not Is_Remote_Call_Interface
(C_Ent
)
4472 and then not Is_Remote_Types
(C_Ent
)
4474 -- This pragma should only appear in an RCI or Remote Types
4475 -- unit (RM E.4.1(4))
4478 ("pragma% not in Remote_Call_Interface or " &
4479 "Remote_Types unit");
4482 if Ekind
(Nm
) = E_Procedure
4483 and then Nkind
(Parent
(Nm
)) = N_Procedure_Specification
4485 if not Is_Remote_Call_Interface
(Nm
) then
4487 ("pragma% cannot be applied on non-remote procedure",
4491 L
:= Parameter_Specifications
(Parent
(Nm
));
4492 Process_Async_Pragma
;
4495 elsif Ekind
(Nm
) = E_Function
then
4497 ("pragma% cannot be applied to function", Arg1
);
4499 elsif Ekind
(Nm
) = E_Record_Type
4500 and then Present
(Corresponding_Remote_Type
(Nm
))
4502 N
:= Declaration_Node
(Corresponding_Remote_Type
(Nm
));
4504 if Nkind
(N
) = N_Full_Type_Declaration
4505 and then Nkind
(Type_Definition
(N
)) =
4506 N_Access_Procedure_Definition
4508 L
:= Parameter_Specifications
(Type_Definition
(N
));
4509 Process_Async_Pragma
;
4513 ("pragma% cannot reference access-to-function type",
4517 -- Only other possibility is Access-to-class-wide type
4519 elsif Is_Access_Type
(Nm
)
4520 and then Is_Class_Wide_Type
(Designated_Type
(Nm
))
4522 Check_First_Subtype
(Arg1
);
4523 Set_Is_Asynchronous
(Nm
);
4524 if Expander_Active
then
4525 RACW_Type_Is_Asynchronous
(Nm
);
4529 Error_Pragma_Arg
("inappropriate argument for pragma%", Arg1
);
4537 -- pragma Atomic (LOCAL_NAME);
4539 when Pragma_Atomic
=>
4540 Process_Atomic_Shared_Volatile
;
4542 -----------------------
4543 -- Atomic_Components --
4544 -----------------------
4546 -- pragma Atomic_Components (array_LOCAL_NAME);
4548 -- This processing is shared by Volatile_Components
4550 when Pragma_Atomic_Components |
4551 Pragma_Volatile_Components
=>
4553 Atomic_Components
: declare
4560 Check_Ada_83_Warning
;
4561 Check_No_Identifiers
;
4562 Check_Arg_Count
(1);
4563 Check_Arg_Is_Local_Name
(Arg1
);
4564 E_Id
:= Expression
(Arg1
);
4566 if Etype
(E_Id
) = Any_Type
then
4572 if Rep_Item_Too_Early
(E
, N
)
4574 Rep_Item_Too_Late
(E
, N
)
4579 D
:= Declaration_Node
(E
);
4582 if (K
= N_Full_Type_Declaration
and then Is_Array_Type
(E
))
4584 ((Ekind
(E
) = E_Constant
or else Ekind
(E
) = E_Variable
)
4585 and then Nkind
(D
) = N_Object_Declaration
4586 and then Nkind
(Object_Definition
(D
)) =
4587 N_Constrained_Array_Definition
)
4589 -- The flag is set on the object, or on the base type
4591 if Nkind
(D
) /= N_Object_Declaration
then
4595 Set_Has_Volatile_Components
(E
);
4597 if Prag_Id
= Pragma_Atomic_Components
then
4598 Set_Has_Atomic_Components
(E
);
4600 if Is_Packed
(E
) then
4601 Set_Is_Packed
(E
, False);
4604 ("?Pack canceled, cannot pack atomic components",
4610 Error_Pragma_Arg
("inappropriate entity for pragma%", Arg1
);
4612 end Atomic_Components
;
4614 --------------------
4615 -- Attach_Handler --
4616 --------------------
4618 -- pragma Attach_Handler (handler_NAME, EXPRESSION);
4620 when Pragma_Attach_Handler
=>
4621 Check_Ada_83_Warning
;
4622 Check_No_Identifiers
;
4623 Check_Arg_Count
(2);
4625 if No_Run_Time_Mode
then
4626 Error_Msg_CRT
("Attach_Handler pragma", N
);
4628 Check_Interrupt_Or_Attach_Handler
;
4630 -- The expression that designates the attribute may
4631 -- depend on a discriminant, and is therefore a per-
4632 -- object expression, to be expanded in the init proc.
4633 -- If expansion is enabled, perform semantic checks
4636 if Expander_Active
then
4638 Temp
: constant Node_Id
:=
4639 New_Copy_Tree
(Expression
(Arg2
));
4641 Set_Parent
(Temp
, N
);
4642 Pre_Analyze_And_Resolve
(Temp
, RTE
(RE_Interrupt_ID
));
4646 Analyze
(Expression
(Arg2
));
4647 Resolve
(Expression
(Arg2
), RTE
(RE_Interrupt_ID
));
4650 Process_Interrupt_Or_Attach_Handler
;
4653 --------------------
4654 -- C_Pass_By_Copy --
4655 --------------------
4657 -- pragma C_Pass_By_Copy ([Max_Size =>] static_integer_EXPRESSION);
4659 when Pragma_C_Pass_By_Copy
=> C_Pass_By_Copy
: declare
4665 Check_Valid_Configuration_Pragma
;
4666 Check_Arg_Count
(1);
4667 Check_Optional_Identifier
(Arg1
, "max_size");
4669 Arg
:= Expression
(Arg1
);
4670 Check_Arg_Is_Static_Expression
(Arg
, Any_Integer
);
4672 Val
:= Expr_Value
(Arg
);
4676 ("maximum size for pragma% must be positive", Arg1
);
4678 elsif UI_Is_In_Int_Range
(Val
) then
4679 Default_C_Record_Mechanism
:= UI_To_Int
(Val
);
4681 -- If a giant value is given, Int'Last will do well enough.
4682 -- If sometime someone complains that a record larger than
4683 -- two gigabytes is not copied, we will worry about it then!
4686 Default_C_Record_Mechanism
:= Mechanism_Type
'Last;
4694 -- pragma Comment (static_string_EXPRESSION)
4696 -- Processing for pragma Comment shares the circuitry for
4697 -- pragma Ident. The only differences are that Ident enforces
4698 -- a limit of 31 characters on its argument, and also enforces
4699 -- limitations on placement for DEC compatibility. Pragma
4700 -- Comment shares neither of these restrictions.
4706 -- pragma Common_Object (
4707 -- [Internal =>] LOCAL_NAME,
4708 -- [, [External =>] EXTERNAL_SYMBOL]
4709 -- [, [Size =>] EXTERNAL_SYMBOL]);
4711 -- Processing for this pragma is shared with Psect_Object
4713 --------------------------
4714 -- Compile_Time_Warning --
4715 --------------------------
4717 -- pragma Compile_Time_Warning
4718 -- (boolean_EXPRESSION, static_string_EXPRESSION);
4720 when Pragma_Compile_Time_Warning
=> Compile_Time_Warning
: declare
4721 Arg1x
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
4725 Check_Arg_Count
(2);
4726 Check_No_Identifiers
;
4727 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
4728 Analyze_And_Resolve
(Arg1x
, Standard_Boolean
);
4730 if Compile_Time_Known_Value
(Arg1x
) then
4731 if Is_True
(Expr_Value
(Get_Pragma_Arg
(Arg1
))) then
4732 String_To_Name_Buffer
(Strval
(Get_Pragma_Arg
(Arg2
)));
4733 Add_Char_To_Name_Buffer
('?');
4736 Msg
: String (1 .. Name_Len
) :=
4737 Name_Buffer
(1 .. Name_Len
);
4742 -- This loop looks for multiple lines separated by
4743 -- ASCII.LF and breaks them into continuation error
4744 -- messages marked with the usual back slash.
4747 for S
in 2 .. Msg
'Length - 1 loop
4748 if Msg
(S
) = ASCII
.LF
then
4750 Error_Msg_N
(Msg
(B
.. S
), Arg1
);
4756 Error_Msg_N
(Msg
(B
.. Msg
'Length), Arg1
);
4760 end Compile_Time_Warning
;
4762 ----------------------------
4763 -- Complex_Representation --
4764 ----------------------------
4766 -- pragma Complex_Representation ([Entity =>] LOCAL_NAME);
4768 when Pragma_Complex_Representation
=> Complex_Representation
: declare
4775 Check_Arg_Count
(1);
4776 Check_Optional_Identifier
(Arg1
, Name_Entity
);
4777 Check_Arg_Is_Local_Name
(Arg1
);
4778 E_Id
:= Expression
(Arg1
);
4780 if Etype
(E_Id
) = Any_Type
then
4786 if not Is_Record_Type
(E
) then
4788 ("argument for pragma% must be record type", Arg1
);
4791 Ent
:= First_Entity
(E
);
4794 or else No
(Next_Entity
(Ent
))
4795 or else Present
(Next_Entity
(Next_Entity
(Ent
)))
4796 or else not Is_Floating_Point_Type
(Etype
(Ent
))
4797 or else Etype
(Ent
) /= Etype
(Next_Entity
(Ent
))
4800 ("record for pragma% must have two fields of same fpt type",
4804 Set_Has_Complex_Representation
(Base_Type
(E
));
4806 end Complex_Representation
;
4808 -------------------------
4809 -- Component_Alignment --
4810 -------------------------
4812 -- pragma Component_Alignment (
4813 -- [Form =>] ALIGNMENT_CHOICE
4814 -- [, [Name =>] type_LOCAL_NAME]);
4816 -- ALIGNMENT_CHOICE ::=
4818 -- | Component_Size_4
4822 when Pragma_Component_Alignment
=> Component_AlignmentP
: declare
4823 Args
: Args_List
(1 .. 2);
4824 Names
: constant Name_List
(1 .. 2) := (
4828 Form
: Node_Id
renames Args
(1);
4829 Name
: Node_Id
renames Args
(2);
4831 Atype
: Component_Alignment_Kind
;
4836 Gather_Associations
(Names
, Args
);
4839 Error_Pragma
("missing Form argument for pragma%");
4842 Check_Arg_Is_Identifier
(Form
);
4844 -- Get proper alignment, note that Default = Component_Size
4845 -- on all machines we have so far, and we want to set this
4846 -- value rather than the default value to indicate that it
4847 -- has been explicitly set (and thus will not get overridden
4848 -- by the default component alignment for the current scope)
4850 if Chars
(Form
) = Name_Component_Size
then
4851 Atype
:= Calign_Component_Size
;
4853 elsif Chars
(Form
) = Name_Component_Size_4
then
4854 Atype
:= Calign_Component_Size_4
;
4856 elsif Chars
(Form
) = Name_Default
then
4857 Atype
:= Calign_Component_Size
;
4859 elsif Chars
(Form
) = Name_Storage_Unit
then
4860 Atype
:= Calign_Storage_Unit
;
4864 ("invalid Form parameter for pragma%", Form
);
4867 -- Case with no name, supplied, affects scope table entry
4871 (Scope_Stack
.Last
).Component_Alignment_Default
:= Atype
;
4873 -- Case of name supplied
4876 Check_Arg_Is_Local_Name
(Name
);
4878 Typ
:= Entity
(Name
);
4881 or else Rep_Item_Too_Early
(Typ
, N
)
4885 Typ
:= Underlying_Type
(Typ
);
4888 if not Is_Record_Type
(Typ
)
4889 and then not Is_Array_Type
(Typ
)
4892 ("Name parameter of pragma% must identify record or " &
4893 "array type", Name
);
4896 -- An explicit Component_Alignment pragma overrides an
4897 -- implicit pragma Pack, but not an explicit one.
4899 if not Has_Pragma_Pack
(Base_Type
(Typ
)) then
4900 Set_Is_Packed
(Base_Type
(Typ
), False);
4901 Set_Component_Alignment
(Base_Type
(Typ
), Atype
);
4904 end Component_AlignmentP
;
4910 -- pragma Controlled (first_subtype_LOCAL_NAME);
4912 when Pragma_Controlled
=> Controlled
: declare
4916 Check_No_Identifiers
;
4917 Check_Arg_Count
(1);
4918 Check_Arg_Is_Local_Name
(Arg1
);
4919 Arg
:= Expression
(Arg1
);
4921 if not Is_Entity_Name
(Arg
)
4922 or else not Is_Access_Type
(Entity
(Arg
))
4924 Error_Pragma_Arg
("pragma% requires access type", Arg1
);
4926 Set_Has_Pragma_Controlled
(Base_Type
(Entity
(Arg
)));
4934 -- pragma Convention ([Convention =>] convention_IDENTIFIER,
4935 -- [Entity =>] LOCAL_NAME);
4937 when Pragma_Convention
=> Convention
: declare
4941 Check_Ada_83_Warning
;
4942 Check_Arg_Count
(2);
4943 Process_Convention
(C
, E
);
4946 ---------------------------
4947 -- Convention_Identifier --
4948 ---------------------------
4950 -- pragma Convention_Identifier ([Name =>] IDENTIFIER,
4951 -- [Convention =>] convention_IDENTIFIER);
4953 when Pragma_Convention_Identifier
=> Convention_Identifier
: declare
4959 Check_Arg_Count
(2);
4960 Check_Optional_Identifier
(Arg1
, Name_Name
);
4961 Check_Optional_Identifier
(Arg2
, Name_Convention
);
4962 Check_Arg_Is_Identifier
(Arg1
);
4963 Check_Arg_Is_Identifier
(Arg1
);
4964 Idnam
:= Chars
(Expression
(Arg1
));
4965 Cname
:= Chars
(Expression
(Arg2
));
4967 if Is_Convention_Name
(Cname
) then
4968 Record_Convention_Identifier
4969 (Idnam
, Get_Convention_Id
(Cname
));
4972 ("second arg for % pragma must be convention", Arg2
);
4974 end Convention_Identifier
;
4980 -- pragma CPP_Class ([Entity =>] local_NAME)
4982 when Pragma_CPP_Class
=> CPP_Class
: declare
4985 Default_DTC
: Entity_Id
:= Empty
;
4986 VTP_Type
: constant Entity_Id
:= RTE
(RE_Vtable_Ptr
);
4992 Check_Arg_Count
(1);
4993 Check_Optional_Identifier
(Arg1
, Name_Entity
);
4994 Check_Arg_Is_Local_Name
(Arg1
);
4996 Arg
:= Expression
(Arg1
);
4999 if Etype
(Arg
) = Any_Type
then
5003 if not Is_Entity_Name
(Arg
)
5004 or else not Is_Type
(Entity
(Arg
))
5006 Error_Pragma_Arg
("pragma% requires a type mark", Arg1
);
5009 Typ
:= Entity
(Arg
);
5011 if not Is_Record_Type
(Typ
) then
5012 Error_Pragma_Arg
("pragma% applicable to a record, "
5013 & "tagged record or record extension", Arg1
);
5016 Default_DTC
:= First_Component
(Typ
);
5017 while Present
(Default_DTC
)
5018 and then Etype
(Default_DTC
) /= VTP_Type
5020 Next_Component
(Default_DTC
);
5023 -- Case of non tagged type
5025 if not Is_Tagged_Type
(Typ
) then
5026 Set_Is_CPP_Class
(Typ
);
5028 if Present
(Default_DTC
) then
5030 ("only tagged records can contain vtable pointers", Arg1
);
5033 -- Case of tagged type with no vtable ptr
5035 -- What is test for Typ = Root_Typ (Typ) about here ???
5037 elsif Is_Tagged_Type
(Typ
)
5038 and then Typ
= Root_Type
(Typ
)
5039 and then No
(Default_DTC
)
5042 ("a cpp_class must contain a vtable pointer", Arg1
);
5044 -- Tagged type that has a vtable ptr
5046 elsif Present
(Default_DTC
) then
5047 Set_Is_CPP_Class
(Typ
);
5048 Set_Is_Limited_Record
(Typ
);
5049 Set_Is_Tag
(Default_DTC
);
5050 Set_DT_Entry_Count
(Default_DTC
, No_Uint
);
5052 -- Since a CPP type has no direct link to its associated tag
5053 -- most tags checks cannot be performed
5055 Set_Kill_Tag_Checks
(Typ
);
5056 Set_Kill_Tag_Checks
(Class_Wide_Type
(Typ
));
5058 -- Get rid of the _tag component when there was one.
5059 -- It is only useful for regular tagged types
5061 if Expander_Active
and then Typ
= Root_Type
(Typ
) then
5063 Tag_C
:= Tag_Component
(Typ
);
5064 C
:= First_Entity
(Typ
);
5067 Set_First_Entity
(Typ
, Next_Entity
(Tag_C
));
5070 while Next_Entity
(C
) /= Tag_C
loop
5074 Set_Next_Entity
(C
, Next_Entity
(Tag_C
));
5080 ---------------------
5081 -- CPP_Constructor --
5082 ---------------------
5084 -- pragma CPP_Constructor ([Entity =>] LOCAL_NAME);
5086 when Pragma_CPP_Constructor
=> CPP_Constructor
: declare
5092 Check_Arg_Count
(1);
5093 Check_Optional_Identifier
(Arg1
, Name_Entity
);
5094 Check_Arg_Is_Local_Name
(Arg1
);
5096 Id
:= Expression
(Arg1
);
5097 Find_Program_Unit_Name
(Id
);
5099 -- If we did not find the name, we are done
5101 if Etype
(Id
) = Any_Type
then
5105 Def_Id
:= Entity
(Id
);
5107 if Ekind
(Def_Id
) = E_Function
5108 and then Is_Class_Wide_Type
(Etype
(Def_Id
))
5109 and then Is_CPP_Class
(Etype
(Etype
(Def_Id
)))
5111 -- What the heck is this??? this pragma allows only 1 arg
5113 if Arg_Count
>= 2 then
5114 Check_At_Most_N_Arguments
(3);
5115 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
5118 if No
(Parameter_Specifications
(Parent
(Def_Id
))) then
5119 Set_Has_Completion
(Def_Id
);
5120 Set_Is_Constructor
(Def_Id
);
5123 ("non-default constructors not implemented", Arg1
);
5128 ("pragma% requires function returning a 'C'P'P_Class type",
5131 end CPP_Constructor
;
5137 -- pragma CPP_Virtual
5138 -- [Entity =>] LOCAL_NAME
5139 -- [ [Vtable_Ptr =>] LOCAL_NAME,
5140 -- [Position =>] static_integer_EXPRESSION]);
5142 when Pragma_CPP_Virtual
=> CPP_Virtual
: declare
5146 VTP_Type
: constant Entity_Id
:= RTE
(RE_Vtable_Ptr
);
5153 if Arg_Count
= 3 then
5154 Check_Optional_Identifier
(Arg2
, "vtable_ptr");
5156 -- We allow Entry_Count as well as Position for the third
5157 -- parameter for back compatibility with versions of GNAT
5158 -- before version 3.12. The documentation has always said
5159 -- Position, but the code up to 3.12 said Entry_Count.
5161 if Chars
(Arg3
) /= Name_Position
then
5162 Check_Optional_Identifier
(Arg3
, "entry_count");
5166 Check_Arg_Count
(1);
5169 Check_Optional_Identifier
(Arg1
, Name_Entity
);
5170 Check_Arg_Is_Local_Name
(Arg1
);
5172 -- First argument must be a subprogram name
5174 Arg
:= Expression
(Arg1
);
5175 Find_Program_Unit_Name
(Arg
);
5177 if Etype
(Arg
) = Any_Type
then
5180 Subp
:= Entity
(Arg
);
5183 if not (Is_Subprogram
(Subp
)
5184 and then Is_Dispatching_Operation
(Subp
))
5187 ("pragma% must reference a primitive operation", Arg1
);
5190 Typ
:= Find_Dispatching_Type
(Subp
);
5192 -- If only one Argument defaults are :
5193 -- . DTC_Entity is the default Vtable pointer
5194 -- . DT_Position will be set at the freezing point
5196 if Arg_Count
= 1 then
5197 Set_DTC_Entity
(Subp
, Tag_Component
(Typ
));
5201 -- Second argument is a component name of type Vtable_Ptr
5203 Arg
:= Expression
(Arg2
);
5205 if Nkind
(Arg
) /= N_Identifier
then
5206 Error_Msg_NE
("must be a& component name", Arg
, Typ
);
5210 DTC
:= First_Component
(Typ
);
5211 while Present
(DTC
) and then Chars
(DTC
) /= Chars
(Arg
) loop
5212 Next_Component
(DTC
);
5216 Error_Msg_NE
("must be a& component name", Arg
, Typ
);
5219 elsif Etype
(DTC
) /= VTP_Type
then
5220 Wrong_Type
(Arg
, VTP_Type
);
5224 -- Third argument is an integer (DT_Position)
5226 Arg
:= Expression
(Arg3
);
5227 Analyze_And_Resolve
(Arg
, Any_Integer
);
5229 if not Is_Static_Expression
(Arg
) then
5230 Flag_Non_Static_Expr
5231 ("third argument of pragma CPP_Virtual must be static!",
5236 V
:= Expr_Value
(Expression
(Arg3
));
5240 ("third argument of pragma% must be positive",
5244 Set_DTC_Entity
(Subp
, DTC
);
5245 Set_DT_Position
(Subp
, V
);
5254 -- pragma CPP_Vtable (
5255 -- [Entity =>] LOCAL_NAME
5256 -- [Vtable_Ptr =>] LOCAL_NAME,
5257 -- [Entry_Count =>] static_integer_EXPRESSION);
5259 when Pragma_CPP_Vtable
=> CPP_Vtable
: declare
5262 VTP_Type
: constant Entity_Id
:= RTE
(RE_Vtable_Ptr
);
5269 Check_Arg_Count
(3);
5270 Check_Optional_Identifier
(Arg1
, Name_Entity
);
5271 Check_Optional_Identifier
(Arg2
, "vtable_ptr");
5272 Check_Optional_Identifier
(Arg3
, "entry_count");
5273 Check_Arg_Is_Local_Name
(Arg1
);
5275 -- First argument is a record type name
5277 Arg
:= Expression
(Arg1
);
5280 if Etype
(Arg
) = Any_Type
then
5283 Typ
:= Entity
(Arg
);
5286 if not (Is_Tagged_Type
(Typ
) and then Is_CPP_Class
(Typ
)) then
5287 Error_Pragma_Arg
("'C'P'P_Class tagged type expected", Arg1
);
5290 -- Second argument is a component name of type Vtable_Ptr
5292 Arg
:= Expression
(Arg2
);
5294 if Nkind
(Arg
) /= N_Identifier
then
5295 Error_Msg_NE
("must be a& component name", Arg
, Typ
);
5299 DTC
:= First_Component
(Typ
);
5300 while Present
(DTC
) and then Chars
(DTC
) /= Chars
(Arg
) loop
5301 Next_Component
(DTC
);
5305 Error_Msg_NE
("must be a& component name", Arg
, Typ
);
5308 elsif Etype
(DTC
) /= VTP_Type
then
5309 Wrong_Type
(DTC
, VTP_Type
);
5312 -- If it is the first pragma Vtable, This becomes the default tag
5314 elsif (not Is_Tag
(DTC
))
5315 and then DT_Entry_Count
(Tag_Component
(Typ
)) = No_Uint
5317 Set_Is_Tag
(Tag_Component
(Typ
), False);
5318 Set_Is_Tag
(DTC
, True);
5319 Set_DT_Entry_Count
(DTC
, No_Uint
);
5322 -- Those pragmas must appear before any primitive operation
5323 -- definition (except inherited ones) otherwise the default
5326 Elmt
:= First_Elmt
(Primitive_Operations
(Typ
));
5327 while Present
(Elmt
) loop
5328 if No
(Alias
(Node
(Elmt
))) then
5329 Error_Msg_Sloc
:= Sloc
(Node
(Elmt
));
5331 ("pragma% must appear before this primitive operation");
5337 -- Third argument is an integer (DT_Entry_Count)
5339 Arg
:= Expression
(Arg3
);
5340 Analyze_And_Resolve
(Arg
, Any_Integer
);
5342 if not Is_Static_Expression
(Arg
) then
5343 Flag_Non_Static_Expr
5344 ("entry count for pragma CPP_Vtable must be a static " &
5345 "expression!", Arg3
);
5349 V
:= Expr_Value
(Expression
(Arg3
));
5353 ("entry count for pragma% must be positive", Arg3
);
5355 Set_DT_Entry_Count
(DTC
, V
);
5364 -- pragma Debug (PROCEDURE_CALL_STATEMENT);
5366 when Pragma_Debug
=> Debug
: begin
5369 -- If assertions are enabled, and we are expanding code, then
5370 -- we rewrite the pragma with its corresponding procedure call
5371 -- and then analyze the call.
5373 if Assertions_Enabled
and Expander_Active
then
5374 Rewrite
(N
, Relocate_Node
(Debug_Statement
(N
)));
5377 -- Otherwise we work a bit to get a tree that makes sense
5378 -- for ASIS purposes, namely a pragma with an analyzed
5379 -- argument that looks like a procedure call.
5382 Expander_Mode_Save_And_Set
(False);
5383 Rewrite
(N
, Relocate_Node
(Debug_Statement
(N
)));
5387 Chars
=> Name_Debug
,
5388 Pragma_Argument_Associations
=>
5389 New_List
(Relocate_Node
(N
))));
5390 Expander_Mode_Restore
;
5394 ---------------------
5395 -- Detect_Blocking --
5396 ---------------------
5398 -- pragma Detect_Blocking;
5400 when Pragma_Detect_Blocking
=>
5402 Check_Arg_Count
(0);
5403 Check_Valid_Configuration_Pragma
;
5404 Detect_Blocking
:= True;
5410 -- pragma Discard_Names [([On =>] LOCAL_NAME)];
5412 when Pragma_Discard_Names
=> Discard_Names
: declare
5417 Check_Ada_83_Warning
;
5419 -- Deal with configuration pragma case
5421 if Arg_Count
= 0 and then Is_Configuration_Pragma
then
5422 Global_Discard_Names
:= True;
5425 -- Otherwise, check correct appropriate context
5428 Check_Is_In_Decl_Part_Or_Package_Spec
;
5430 if Arg_Count
= 0 then
5432 -- If there is no parameter, then from now on this pragma
5433 -- applies to any enumeration, exception or tagged type
5434 -- defined in the current declarative part.
5436 Set_Discard_Names
(Current_Scope
);
5440 Check_Arg_Count
(1);
5441 Check_Optional_Identifier
(Arg1
, Name_On
);
5442 Check_Arg_Is_Local_Name
(Arg1
);
5443 E_Id
:= Expression
(Arg1
);
5445 if Etype
(E_Id
) = Any_Type
then
5451 if (Is_First_Subtype
(E
)
5452 and then (Is_Enumeration_Type
(E
)
5453 or else Is_Tagged_Type
(E
)))
5454 or else Ekind
(E
) = E_Exception
5456 Set_Discard_Names
(E
);
5459 ("inappropriate entity for pragma%", Arg1
);
5469 -- pragma Elaborate (library_unit_NAME {, library_unit_NAME});
5471 when Pragma_Elaborate
=> Elaborate
: declare
5473 Parent_Node
: Node_Id
;
5478 -- Pragma must be in context items list of a compilation unit
5480 if not Is_List_Member
(N
) then
5485 Plist
:= List_Containing
(N
);
5486 Parent_Node
:= Parent
(Plist
);
5488 if Parent_Node
= Empty
5489 or else Nkind
(Parent_Node
) /= N_Compilation_Unit
5490 or else Context_Items
(Parent_Node
) /= Plist
5497 -- Must be at least one argument
5499 if Arg_Count
= 0 then
5500 Error_Pragma
("pragma% requires at least one argument");
5503 -- In Ada 83 mode, there can be no items following it in the
5504 -- context list except other pragmas and implicit with clauses
5505 -- (e.g. those added by use of Rtsfind). In Ada 95 mode, this
5506 -- placement rule does not apply.
5508 if Ada_Version
= Ada_83
and then Comes_From_Source
(N
) then
5511 while Present
(Citem
) loop
5512 if Nkind
(Citem
) = N_Pragma
5513 or else (Nkind
(Citem
) = N_With_Clause
5514 and then Implicit_With
(Citem
))
5519 ("(Ada 83) pragma% must be at end of context clause");
5526 -- Finally, the arguments must all be units mentioned in a with
5527 -- clause in the same context clause. Note we already checked
5528 -- (in Par.Prag) that the arguments are either identifiers or
5531 Outer
: while Present
(Arg
) loop
5532 Citem
:= First
(Plist
);
5534 Inner
: while Citem
/= N
loop
5535 if Nkind
(Citem
) = N_With_Clause
5536 and then Same_Name
(Name
(Citem
), Expression
(Arg
))
5538 Set_Elaborate_Present
(Citem
, True);
5539 Set_Unit_Name
(Expression
(Arg
), Name
(Citem
));
5540 Set_Suppress_Elaboration_Warnings
(Entity
(Name
(Citem
)));
5549 ("argument of pragma% is not with'ed unit", Arg
);
5555 -- Give a warning if operating in static mode with -gnatwl
5556 -- (elaboration warnings eanbled) switch set.
5558 if Elab_Warnings
and not Dynamic_Elaboration_Checks
then
5560 ("?use of pragma Elaborate may not be safe", N
);
5562 ("?use pragma Elaborate_All instead if possible", N
);
5570 -- pragma Elaborate_All (library_unit_NAME {, library_unit_NAME});
5572 when Pragma_Elaborate_All
=> Elaborate_All
: declare
5574 Parent_Node
: Node_Id
;
5579 Check_Ada_83_Warning
;
5581 -- Pragma must be in context items list of a compilation unit
5583 if not Is_List_Member
(N
) then
5588 Plist
:= List_Containing
(N
);
5589 Parent_Node
:= Parent
(Plist
);
5591 if Parent_Node
= Empty
5592 or else Nkind
(Parent_Node
) /= N_Compilation_Unit
5593 or else Context_Items
(Parent_Node
) /= Plist
5600 -- Must be at least one argument
5602 if Arg_Count
= 0 then
5603 Error_Pragma
("pragma% requires at least one argument");
5606 -- Note: unlike pragma Elaborate, pragma Elaborate_All does not
5607 -- have to appear at the end of the context clause, but may
5608 -- appear mixed in with other items, even in Ada 83 mode.
5610 -- Final check: the arguments must all be units mentioned in
5611 -- a with clause in the same context clause. Note that we
5612 -- already checked (in Par.Prag) that all the arguments are
5613 -- either identifiers or selected components.
5616 Outr
: while Present
(Arg
) loop
5617 Citem
:= First
(Plist
);
5619 Innr
: while Citem
/= N
loop
5620 if Nkind
(Citem
) = N_With_Clause
5621 and then Same_Name
(Name
(Citem
), Expression
(Arg
))
5623 Set_Elaborate_All_Present
(Citem
, True);
5624 Set_Unit_Name
(Expression
(Arg
), Name
(Citem
));
5625 Set_Suppress_Elaboration_Warnings
(Entity
(Name
(Citem
)));
5633 Set_Error_Posted
(N
);
5635 ("argument of pragma% is not with'ed unit", Arg
);
5642 --------------------
5643 -- Elaborate_Body --
5644 --------------------
5646 -- pragma Elaborate_Body [( library_unit_NAME )];
5648 when Pragma_Elaborate_Body
=> Elaborate_Body
: declare
5649 Cunit_Node
: Node_Id
;
5650 Cunit_Ent
: Entity_Id
;
5653 Check_Ada_83_Warning
;
5654 Check_Valid_Library_Unit_Pragma
;
5656 if Nkind
(N
) = N_Null_Statement
then
5660 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
5661 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
5663 if Nkind
(Unit
(Cunit_Node
)) = N_Package_Body
5665 Nkind
(Unit
(Cunit_Node
)) = N_Subprogram_Body
5667 Error_Pragma
("pragma% must refer to a spec, not a body");
5669 Set_Body_Required
(Cunit_Node
, True);
5670 Set_Has_Pragma_Elaborate_Body
(Cunit_Ent
);
5672 -- If we are in dynamic elaboration mode, then we suppress
5673 -- elaboration warnings for the unit, since it is definitely
5674 -- fine NOT to do dynamic checks at the first level (and such
5675 -- checks will be suppressed because no elaboration boolean
5676 -- is created for Elaborate_Body packages).
5678 -- But in the static model of elaboration, Elaborate_Body is
5679 -- definitely NOT good enough to ensure elaboration safety on
5680 -- its own, since the body may WITH other units that are not
5681 -- safe from an elaboration point of view, so a client must
5682 -- still do an Elaborate_All on such units.
5684 -- Debug flag -gnatdD restores the old behavior of 3.13,
5685 -- where Elaborate_Body always suppressed elab warnings.
5687 if Dynamic_Elaboration_Checks
or Debug_Flag_DD
then
5688 Set_Suppress_Elaboration_Warnings
(Cunit_Ent
);
5693 ------------------------
5694 -- Elaboration_Checks --
5695 ------------------------
5697 -- pragma Elaboration_Checks (Static | Dynamic);
5699 when Pragma_Elaboration_Checks
=>
5701 Check_Arg_Count
(1);
5702 Check_Arg_Is_One_Of
(Arg1
, Name_Static
, Name_Dynamic
);
5703 Dynamic_Elaboration_Checks
:=
5704 (Chars
(Get_Pragma_Arg
(Arg1
)) = Name_Dynamic
);
5710 -- pragma Eliminate (
5711 -- [Unit_Name =>] IDENTIFIER |
5712 -- SELECTED_COMPONENT
5713 -- [,[Entity =>] IDENTIFIER |
5714 -- SELECTED_COMPONENT |
5716 -- [,]OVERLOADING_RESOLUTION);
5718 -- OVERLOADING_RESOLUTION ::= PARAMETER_AND_RESULT_TYPE_PROFILE |
5721 -- PARAMETER_AND_RESULT_TYPE_PROFILE ::= PROCEDURE_PROFILE |
5724 -- PROCEDURE_PROFILE ::= Parameter_Types => PARAMETER_TYPES
5726 -- FUNCTION_PROFILE ::= [Parameter_Types => PARAMETER_TYPES,]
5727 -- Result_Type => result_SUBTYPE_NAME]
5729 -- PARAMETER_TYPES ::= (SUBTYPE_NAME {, SUBTYPE_NAME})
5730 -- SUBTYPE_NAME ::= STRING_LITERAL
5732 -- SOURCE_LOCATION ::= Source_Location => SOURCE_TRACE
5733 -- SOURCE_TRACE ::= STRING_LITERAL
5735 when Pragma_Eliminate
=> Eliminate
: declare
5736 Args
: Args_List
(1 .. 5);
5737 Names
: constant Name_List
(1 .. 5) := (
5740 Name_Parameter_Types
,
5742 Name_Source_Location
);
5744 Unit_Name
: Node_Id
renames Args
(1);
5745 Entity
: Node_Id
renames Args
(2);
5746 Parameter_Types
: Node_Id
renames Args
(3);
5747 Result_Type
: Node_Id
renames Args
(4);
5748 Source_Location
: Node_Id
renames Args
(5);
5752 Check_Valid_Configuration_Pragma
;
5753 Gather_Associations
(Names
, Args
);
5755 if No
(Unit_Name
) then
5756 Error_Pragma
("missing Unit_Name argument for pragma%");
5760 and then (Present
(Parameter_Types
)
5762 Present
(Result_Type
)
5764 Present
(Source_Location
))
5766 Error_Pragma
("missing Entity argument for pragma%");
5769 if (Present
(Parameter_Types
)
5771 Present
(Result_Type
))
5773 Present
(Source_Location
)
5776 ("parameter profile and source location can not " &
5777 "be used together in pragma%");
5780 Process_Eliminate_Pragma
5789 -------------------------
5790 -- Explicit_Overriding --
5791 -------------------------
5793 when Pragma_Explicit_Overriding
=>
5794 Check_Valid_Configuration_Pragma
;
5795 Check_Arg_Count
(0);
5796 Explicit_Overriding
:= True;
5803 -- [ Convention =>] convention_IDENTIFIER,
5804 -- [ Entity =>] local_NAME
5805 -- [, [External_Name =>] static_string_EXPRESSION ]
5806 -- [, [Link_Name =>] static_string_EXPRESSION ]);
5808 when Pragma_Export
=> Export
: declare
5813 Check_Ada_83_Warning
;
5814 Check_At_Least_N_Arguments
(2);
5815 Check_At_Most_N_Arguments
(4);
5816 Process_Convention
(C
, Def_Id
);
5818 if Ekind
(Def_Id
) /= E_Constant
then
5819 Note_Possible_Modification
(Expression
(Arg2
));
5822 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
5823 Set_Exported
(Def_Id
, Arg2
);
5826 ----------------------
5827 -- Export_Exception --
5828 ----------------------
5830 -- pragma Export_Exception (
5831 -- [Internal =>] LOCAL_NAME,
5832 -- [, [External =>] EXTERNAL_SYMBOL,]
5833 -- [, [Form =>] Ada | VMS]
5834 -- [, [Code =>] static_integer_EXPRESSION]);
5836 when Pragma_Export_Exception
=> Export_Exception
: declare
5837 Args
: Args_List
(1 .. 4);
5838 Names
: constant Name_List
(1 .. 4) := (
5844 Internal
: Node_Id
renames Args
(1);
5845 External
: Node_Id
renames Args
(2);
5846 Form
: Node_Id
renames Args
(3);
5847 Code
: Node_Id
renames Args
(4);
5850 if Inside_A_Generic
then
5851 Error_Pragma
("pragma% cannot be used for generic entities");
5854 Gather_Associations
(Names
, Args
);
5855 Process_Extended_Import_Export_Exception_Pragma
(
5856 Arg_Internal
=> Internal
,
5857 Arg_External
=> External
,
5861 if not Is_VMS_Exception
(Entity
(Internal
)) then
5862 Set_Exported
(Entity
(Internal
), Internal
);
5864 end Export_Exception
;
5866 ---------------------
5867 -- Export_Function --
5868 ---------------------
5870 -- pragma Export_Function (
5871 -- [Internal =>] LOCAL_NAME,
5872 -- [, [External =>] EXTERNAL_SYMBOL,]
5873 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
5874 -- [, [Result_Type =>] TYPE_DESIGNATOR]
5875 -- [, [Mechanism =>] MECHANISM]
5876 -- [, [Result_Mechanism =>] MECHANISM_NAME]);
5878 -- EXTERNAL_SYMBOL ::=
5880 -- | static_string_EXPRESSION
5882 -- PARAMETER_TYPES ::=
5884 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
5886 -- TYPE_DESIGNATOR ::=
5888 -- | subtype_Name ' Access
5892 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
5894 -- MECHANISM_ASSOCIATION ::=
5895 -- [formal_parameter_NAME =>] MECHANISM_NAME
5897 -- MECHANISM_NAME ::=
5900 -- | Descriptor [([Class =>] CLASS_NAME)]
5902 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
5904 when Pragma_Export_Function
=> Export_Function
: declare
5905 Args
: Args_List
(1 .. 6);
5906 Names
: constant Name_List
(1 .. 6) := (
5909 Name_Parameter_Types
,
5912 Name_Result_Mechanism
);
5914 Internal
: Node_Id
renames Args
(1);
5915 External
: Node_Id
renames Args
(2);
5916 Parameter_Types
: Node_Id
renames Args
(3);
5917 Result_Type
: Node_Id
renames Args
(4);
5918 Mechanism
: Node_Id
renames Args
(5);
5919 Result_Mechanism
: Node_Id
renames Args
(6);
5923 Gather_Associations
(Names
, Args
);
5924 Process_Extended_Import_Export_Subprogram_Pragma
(
5925 Arg_Internal
=> Internal
,
5926 Arg_External
=> External
,
5927 Arg_Parameter_Types
=> Parameter_Types
,
5928 Arg_Result_Type
=> Result_Type
,
5929 Arg_Mechanism
=> Mechanism
,
5930 Arg_Result_Mechanism
=> Result_Mechanism
);
5931 end Export_Function
;
5937 -- pragma Export_Object (
5938 -- [Internal =>] LOCAL_NAME,
5939 -- [, [External =>] EXTERNAL_SYMBOL]
5940 -- [, [Size =>] EXTERNAL_SYMBOL]);
5942 -- EXTERNAL_SYMBOL ::=
5944 -- | static_string_EXPRESSION
5946 -- PARAMETER_TYPES ::=
5948 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
5950 -- TYPE_DESIGNATOR ::=
5952 -- | subtype_Name ' Access
5956 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
5958 -- MECHANISM_ASSOCIATION ::=
5959 -- [formal_parameter_NAME =>] MECHANISM_NAME
5961 -- MECHANISM_NAME ::=
5964 -- | Descriptor [([Class =>] CLASS_NAME)]
5966 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
5968 when Pragma_Export_Object
=> Export_Object
: declare
5969 Args
: Args_List
(1 .. 3);
5970 Names
: constant Name_List
(1 .. 3) := (
5975 Internal
: Node_Id
renames Args
(1);
5976 External
: Node_Id
renames Args
(2);
5977 Size
: Node_Id
renames Args
(3);
5981 Gather_Associations
(Names
, Args
);
5982 Process_Extended_Import_Export_Object_Pragma
(
5983 Arg_Internal
=> Internal
,
5984 Arg_External
=> External
,
5988 ----------------------
5989 -- Export_Procedure --
5990 ----------------------
5992 -- pragma Export_Procedure (
5993 -- [Internal =>] LOCAL_NAME,
5994 -- [, [External =>] EXTERNAL_SYMBOL,]
5995 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
5996 -- [, [Mechanism =>] MECHANISM]);
5998 -- EXTERNAL_SYMBOL ::=
6000 -- | static_string_EXPRESSION
6002 -- PARAMETER_TYPES ::=
6004 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6006 -- TYPE_DESIGNATOR ::=
6008 -- | subtype_Name ' Access
6012 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6014 -- MECHANISM_ASSOCIATION ::=
6015 -- [formal_parameter_NAME =>] MECHANISM_NAME
6017 -- MECHANISM_NAME ::=
6020 -- | Descriptor [([Class =>] CLASS_NAME)]
6022 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6024 when Pragma_Export_Procedure
=> Export_Procedure
: declare
6025 Args
: Args_List
(1 .. 4);
6026 Names
: constant Name_List
(1 .. 4) := (
6029 Name_Parameter_Types
,
6032 Internal
: Node_Id
renames Args
(1);
6033 External
: Node_Id
renames Args
(2);
6034 Parameter_Types
: Node_Id
renames Args
(3);
6035 Mechanism
: Node_Id
renames Args
(4);
6039 Gather_Associations
(Names
, Args
);
6040 Process_Extended_Import_Export_Subprogram_Pragma
(
6041 Arg_Internal
=> Internal
,
6042 Arg_External
=> External
,
6043 Arg_Parameter_Types
=> Parameter_Types
,
6044 Arg_Mechanism
=> Mechanism
);
6045 end Export_Procedure
;
6051 -- pragma Export_Value (
6052 -- [Value =>] static_integer_EXPRESSION,
6053 -- [Link_Name =>] static_string_EXPRESSION);
6055 when Pragma_Export_Value
=>
6057 Check_Arg_Count
(2);
6059 Check_Optional_Identifier
(Arg1
, Name_Value
);
6060 Check_Arg_Is_Static_Expression
(Arg1
, Any_Integer
);
6062 Check_Optional_Identifier
(Arg2
, Name_Link_Name
);
6063 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
6065 -----------------------------
6066 -- Export_Valued_Procedure --
6067 -----------------------------
6069 -- pragma Export_Valued_Procedure (
6070 -- [Internal =>] LOCAL_NAME,
6071 -- [, [External =>] EXTERNAL_SYMBOL,]
6072 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6073 -- [, [Mechanism =>] MECHANISM]);
6075 -- EXTERNAL_SYMBOL ::=
6077 -- | static_string_EXPRESSION
6079 -- PARAMETER_TYPES ::=
6081 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6083 -- TYPE_DESIGNATOR ::=
6085 -- | subtype_Name ' Access
6089 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6091 -- MECHANISM_ASSOCIATION ::=
6092 -- [formal_parameter_NAME =>] MECHANISM_NAME
6094 -- MECHANISM_NAME ::=
6097 -- | Descriptor [([Class =>] CLASS_NAME)]
6099 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6101 when Pragma_Export_Valued_Procedure
=>
6102 Export_Valued_Procedure
: declare
6103 Args
: Args_List
(1 .. 4);
6104 Names
: constant Name_List
(1 .. 4) := (
6107 Name_Parameter_Types
,
6110 Internal
: Node_Id
renames Args
(1);
6111 External
: Node_Id
renames Args
(2);
6112 Parameter_Types
: Node_Id
renames Args
(3);
6113 Mechanism
: Node_Id
renames Args
(4);
6117 Gather_Associations
(Names
, Args
);
6118 Process_Extended_Import_Export_Subprogram_Pragma
(
6119 Arg_Internal
=> Internal
,
6120 Arg_External
=> External
,
6121 Arg_Parameter_Types
=> Parameter_Types
,
6122 Arg_Mechanism
=> Mechanism
);
6123 end Export_Valued_Procedure
;
6129 -- pragma Extend_System ([Name =>] Identifier);
6131 when Pragma_Extend_System
=> Extend_System
: declare
6134 Check_Valid_Configuration_Pragma
;
6135 Check_Arg_Count
(1);
6136 Check_Optional_Identifier
(Arg1
, Name_Name
);
6137 Check_Arg_Is_Identifier
(Arg1
);
6139 Get_Name_String
(Chars
(Expression
(Arg1
)));
6142 and then Name_Buffer
(1 .. 4) = "aux_"
6144 if Present
(System_Extend_Pragma_Arg
) then
6145 if Chars
(Expression
(Arg1
)) =
6146 Chars
(Expression
(System_Extend_Pragma_Arg
))
6150 Error_Msg_Sloc
:= Sloc
(System_Extend_Pragma_Arg
);
6151 Error_Pragma
("pragma% conflicts with that at#");
6155 System_Extend_Pragma_Arg
:= Arg1
;
6157 if not GNAT_Mode
then
6158 System_Extend_Unit
:= Arg1
;
6162 Error_Pragma
("incorrect name for pragma%, must be Aux_xxx");
6166 ------------------------
6167 -- Extensions_Allowed --
6168 ------------------------
6170 -- pragma Extensions_Allowed (ON | OFF);
6172 when Pragma_Extensions_Allowed
=>
6174 Check_Arg_Count
(1);
6175 Check_No_Identifiers
;
6176 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
6178 if Chars
(Expression
(Arg1
)) = Name_On
then
6179 Extensions_Allowed
:= True;
6180 Ada_Version
:= Ada_Version_Type
'Last;
6182 Extensions_Allowed
:= False;
6183 Ada_Version
:= Ada_Version_Type
'Min (Ada_Version
, Ada_95
);
6190 -- pragma External (
6191 -- [ Convention =>] convention_IDENTIFIER,
6192 -- [ Entity =>] local_NAME
6193 -- [, [External_Name =>] static_string_EXPRESSION ]
6194 -- [, [Link_Name =>] static_string_EXPRESSION ]);
6196 when Pragma_External
=> External
: declare
6202 Check_At_Least_N_Arguments
(2);
6203 Check_At_Most_N_Arguments
(4);
6204 Process_Convention
(C
, Def_Id
);
6205 Note_Possible_Modification
(Expression
(Arg2
));
6206 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
6207 Set_Exported
(Def_Id
, Arg2
);
6210 --------------------------
6211 -- External_Name_Casing --
6212 --------------------------
6214 -- pragma External_Name_Casing (
6215 -- UPPERCASE | LOWERCASE
6216 -- [, AS_IS | UPPERCASE | LOWERCASE]);
6218 when Pragma_External_Name_Casing
=>
6220 External_Name_Casing
: declare
6223 Check_No_Identifiers
;
6225 if Arg_Count
= 2 then
6227 (Arg2
, Name_As_Is
, Name_Uppercase
, Name_Lowercase
);
6229 case Chars
(Get_Pragma_Arg
(Arg2
)) is
6231 Opt
.External_Name_Exp_Casing
:= As_Is
;
6233 when Name_Uppercase
=>
6234 Opt
.External_Name_Exp_Casing
:= Uppercase
;
6236 when Name_Lowercase
=>
6237 Opt
.External_Name_Exp_Casing
:= Lowercase
;
6244 Check_Arg_Count
(1);
6247 Check_Arg_Is_One_Of
(Arg1
, Name_Uppercase
, Name_Lowercase
);
6249 case Chars
(Get_Pragma_Arg
(Arg1
)) is
6250 when Name_Uppercase
=>
6251 Opt
.External_Name_Imp_Casing
:= Uppercase
;
6253 when Name_Lowercase
=>
6254 Opt
.External_Name_Imp_Casing
:= Lowercase
;
6259 end External_Name_Casing
;
6261 ---------------------------
6262 -- Finalize_Storage_Only --
6263 ---------------------------
6265 -- pragma Finalize_Storage_Only (first_subtype_LOCAL_NAME);
6267 when Pragma_Finalize_Storage_Only
=> Finalize_Storage
: declare
6268 Assoc
: constant Node_Id
:= Arg1
;
6269 Type_Id
: constant Node_Id
:= Expression
(Assoc
);
6273 Check_No_Identifiers
;
6274 Check_Arg_Count
(1);
6275 Check_Arg_Is_Local_Name
(Arg1
);
6277 Find_Type
(Type_Id
);
6278 Typ
:= Entity
(Type_Id
);
6281 or else Rep_Item_Too_Early
(Typ
, N
)
6285 Typ
:= Underlying_Type
(Typ
);
6288 if not Is_Controlled
(Typ
) then
6289 Error_Pragma
("pragma% must specify controlled type");
6292 Check_First_Subtype
(Arg1
);
6294 if Finalize_Storage_Only
(Typ
) then
6295 Error_Pragma
("duplicate pragma%, only one allowed");
6297 elsif not Rep_Item_Too_Late
(Typ
, N
) then
6298 Set_Finalize_Storage_Only
(Base_Type
(Typ
), True);
6300 end Finalize_Storage
;
6302 --------------------------
6303 -- Float_Representation --
6304 --------------------------
6306 -- pragma Float_Representation (VAX_Float | IEEE_Float);
6308 when Pragma_Float_Representation
=> Float_Representation
: declare
6316 if Arg_Count
= 1 then
6317 Check_Valid_Configuration_Pragma
;
6319 Check_Arg_Count
(2);
6320 Check_Optional_Identifier
(Arg2
, Name_Entity
);
6321 Check_Arg_Is_Local_Name
(Arg2
);
6324 Check_No_Identifier
(Arg1
);
6325 Check_Arg_Is_One_Of
(Arg1
, Name_VAX_Float
, Name_IEEE_Float
);
6327 if not OpenVMS_On_Target
then
6328 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
6330 ("?pragma% ignored (applies only to Open'V'M'S)");
6336 -- One argument case
6338 if Arg_Count
= 1 then
6340 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
6342 if Opt
.Float_Format
= 'I' then
6343 Error_Pragma
("'I'E'E'E format previously specified");
6346 Opt
.Float_Format
:= 'V';
6349 if Opt
.Float_Format
= 'V' then
6350 Error_Pragma
("'V'A'X format previously specified");
6353 Opt
.Float_Format
:= 'I';
6356 Set_Standard_Fpt_Formats
;
6358 -- Two argument case
6361 Argx
:= Get_Pragma_Arg
(Arg2
);
6363 if not Is_Entity_Name
(Argx
)
6364 or else not Is_Floating_Point_Type
(Entity
(Argx
))
6367 ("second argument of% pragma must be floating-point type",
6371 Ent
:= Entity
(Argx
);
6372 Digs
:= UI_To_Int
(Digits_Value
(Ent
));
6374 -- Two arguments, VAX_Float case
6376 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
6379 when 6 => Set_F_Float
(Ent
);
6380 when 9 => Set_D_Float
(Ent
);
6381 when 15 => Set_G_Float
(Ent
);
6385 ("wrong digits value, must be 6,9 or 15", Arg2
);
6388 -- Two arguments, IEEE_Float case
6392 when 6 => Set_IEEE_Short
(Ent
);
6393 when 15 => Set_IEEE_Long
(Ent
);
6397 ("wrong digits value, must be 6 or 15", Arg2
);
6401 end Float_Representation
;
6407 -- pragma Ident (static_string_EXPRESSION)
6409 -- Note: pragma Comment shares this processing. Pragma Comment
6410 -- is identical to Ident, except that the restriction of the
6411 -- argument to 31 characters and the placement restrictions
6412 -- are not enforced for pragma Comment.
6414 when Pragma_Ident | Pragma_Comment
=> Ident
: declare
6419 Check_Arg_Count
(1);
6420 Check_No_Identifiers
;
6421 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
6423 -- For pragma Ident, preserve DEC compatibility by requiring
6424 -- the pragma to appear in a declarative part or package spec.
6426 if Prag_Id
= Pragma_Ident
then
6427 Check_Is_In_Decl_Part_Or_Package_Spec
;
6430 Str
:= Expr_Value_S
(Expression
(Arg1
));
6437 GP
:= Parent
(Parent
(N
));
6439 if Nkind
(GP
) = N_Package_Declaration
6441 Nkind
(GP
) = N_Generic_Package_Declaration
6446 -- If we have a compilation unit, then record the ident
6447 -- value, checking for improper duplication.
6449 if Nkind
(GP
) = N_Compilation_Unit
then
6450 CS
:= Ident_String
(Current_Sem_Unit
);
6452 if Present
(CS
) then
6454 -- For Ident, we do not permit multiple instances
6456 if Prag_Id
= Pragma_Ident
then
6457 Error_Pragma
("duplicate% pragma not permitted");
6459 -- For Comment, we concatenate the string, unless we
6460 -- want to preserve the tree structure for ASIS.
6462 elsif not ASIS_Mode
then
6463 Start_String
(Strval
(CS
));
6464 Store_String_Char
(' ');
6465 Store_String_Chars
(Strval
(Str
));
6466 Set_Strval
(CS
, End_String
);
6470 -- In VMS, the effect of IDENT is achieved by passing
6471 -- IDENTIFICATION=name as a --for-linker switch.
6473 if OpenVMS_On_Target
then
6476 ("--for-linker=IDENTIFICATION=");
6477 String_To_Name_Buffer
(Strval
(Str
));
6478 Store_String_Chars
(Name_Buffer
(1 .. Name_Len
));
6480 -- Only the last processed IDENT is saved. The main
6481 -- purpose is so an IDENT associated with a main
6482 -- procedure will be used in preference to an IDENT
6483 -- associated with a with'd package.
6485 Replace_Linker_Option_String
6486 (End_String
, "--for-linker=IDENTIFICATION=");
6489 Set_Ident_String
(Current_Sem_Unit
, Str
);
6492 -- For subunits, we just ignore the Ident, since in GNAT
6493 -- these are not separate object files, and hence not
6494 -- separate units in the unit table.
6496 elsif Nkind
(GP
) = N_Subunit
then
6499 -- Otherwise we have a misplaced pragma Ident, but we ignore
6500 -- this if we are in an instantiation, since it comes from
6501 -- a generic, and has no relevance to the instantiation.
6503 elsif Prag_Id
= Pragma_Ident
then
6504 if Instantiation_Location
(Loc
) = No_Location
then
6505 Error_Pragma
("pragma% only allowed at outer level");
6516 -- [ Convention =>] convention_IDENTIFIER,
6517 -- [ Entity =>] local_NAME
6518 -- [, [External_Name =>] static_string_EXPRESSION ]
6519 -- [, [Link_Name =>] static_string_EXPRESSION ]);
6521 when Pragma_Import
=>
6522 Check_Ada_83_Warning
;
6523 Check_At_Least_N_Arguments
(2);
6524 Check_At_Most_N_Arguments
(4);
6525 Process_Import_Or_Interface
;
6527 ----------------------
6528 -- Import_Exception --
6529 ----------------------
6531 -- pragma Import_Exception (
6532 -- [Internal =>] LOCAL_NAME,
6533 -- [, [External =>] EXTERNAL_SYMBOL,]
6534 -- [, [Form =>] Ada | VMS]
6535 -- [, [Code =>] static_integer_EXPRESSION]);
6537 when Pragma_Import_Exception
=> Import_Exception
: declare
6538 Args
: Args_List
(1 .. 4);
6539 Names
: constant Name_List
(1 .. 4) := (
6545 Internal
: Node_Id
renames Args
(1);
6546 External
: Node_Id
renames Args
(2);
6547 Form
: Node_Id
renames Args
(3);
6548 Code
: Node_Id
renames Args
(4);
6551 Gather_Associations
(Names
, Args
);
6553 if Present
(External
) and then Present
(Code
) then
6555 ("cannot give both External and Code options for pragma%");
6558 Process_Extended_Import_Export_Exception_Pragma
(
6559 Arg_Internal
=> Internal
,
6560 Arg_External
=> External
,
6564 if not Is_VMS_Exception
(Entity
(Internal
)) then
6565 Set_Imported
(Entity
(Internal
));
6567 end Import_Exception
;
6569 ---------------------
6570 -- Import_Function --
6571 ---------------------
6573 -- pragma Import_Function (
6574 -- [Internal =>] LOCAL_NAME,
6575 -- [, [External =>] EXTERNAL_SYMBOL]
6576 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6577 -- [, [Result_Type =>] SUBTYPE_MARK]
6578 -- [, [Mechanism =>] MECHANISM]
6579 -- [, [Result_Mechanism =>] MECHANISM_NAME]
6580 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
6582 -- EXTERNAL_SYMBOL ::=
6584 -- | static_string_EXPRESSION
6586 -- PARAMETER_TYPES ::=
6588 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6590 -- TYPE_DESIGNATOR ::=
6592 -- | subtype_Name ' Access
6596 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6598 -- MECHANISM_ASSOCIATION ::=
6599 -- [formal_parameter_NAME =>] MECHANISM_NAME
6601 -- MECHANISM_NAME ::=
6604 -- | Descriptor [([Class =>] CLASS_NAME)]
6606 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6608 when Pragma_Import_Function
=> Import_Function
: declare
6609 Args
: Args_List
(1 .. 7);
6610 Names
: constant Name_List
(1 .. 7) := (
6613 Name_Parameter_Types
,
6616 Name_Result_Mechanism
,
6617 Name_First_Optional_Parameter
);
6619 Internal
: Node_Id
renames Args
(1);
6620 External
: Node_Id
renames Args
(2);
6621 Parameter_Types
: Node_Id
renames Args
(3);
6622 Result_Type
: Node_Id
renames Args
(4);
6623 Mechanism
: Node_Id
renames Args
(5);
6624 Result_Mechanism
: Node_Id
renames Args
(6);
6625 First_Optional_Parameter
: Node_Id
renames Args
(7);
6629 Gather_Associations
(Names
, Args
);
6630 Process_Extended_Import_Export_Subprogram_Pragma
(
6631 Arg_Internal
=> Internal
,
6632 Arg_External
=> External
,
6633 Arg_Parameter_Types
=> Parameter_Types
,
6634 Arg_Result_Type
=> Result_Type
,
6635 Arg_Mechanism
=> Mechanism
,
6636 Arg_Result_Mechanism
=> Result_Mechanism
,
6637 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
6638 end Import_Function
;
6644 -- pragma Import_Object (
6645 -- [Internal =>] LOCAL_NAME,
6646 -- [, [External =>] EXTERNAL_SYMBOL]
6647 -- [, [Size =>] EXTERNAL_SYMBOL]);
6649 -- EXTERNAL_SYMBOL ::=
6651 -- | static_string_EXPRESSION
6653 when Pragma_Import_Object
=> Import_Object
: declare
6654 Args
: Args_List
(1 .. 3);
6655 Names
: constant Name_List
(1 .. 3) := (
6660 Internal
: Node_Id
renames Args
(1);
6661 External
: Node_Id
renames Args
(2);
6662 Size
: Node_Id
renames Args
(3);
6666 Gather_Associations
(Names
, Args
);
6667 Process_Extended_Import_Export_Object_Pragma
(
6668 Arg_Internal
=> Internal
,
6669 Arg_External
=> External
,
6673 ----------------------
6674 -- Import_Procedure --
6675 ----------------------
6677 -- pragma Import_Procedure (
6678 -- [Internal =>] LOCAL_NAME,
6679 -- [, [External =>] EXTERNAL_SYMBOL]
6680 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6681 -- [, [Mechanism =>] MECHANISM]
6682 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
6684 -- EXTERNAL_SYMBOL ::=
6686 -- | static_string_EXPRESSION
6688 -- PARAMETER_TYPES ::=
6690 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6692 -- TYPE_DESIGNATOR ::=
6694 -- | subtype_Name ' Access
6698 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6700 -- MECHANISM_ASSOCIATION ::=
6701 -- [formal_parameter_NAME =>] MECHANISM_NAME
6703 -- MECHANISM_NAME ::=
6706 -- | Descriptor [([Class =>] CLASS_NAME)]
6708 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6710 when Pragma_Import_Procedure
=> Import_Procedure
: declare
6711 Args
: Args_List
(1 .. 5);
6712 Names
: constant Name_List
(1 .. 5) := (
6715 Name_Parameter_Types
,
6717 Name_First_Optional_Parameter
);
6719 Internal
: Node_Id
renames Args
(1);
6720 External
: Node_Id
renames Args
(2);
6721 Parameter_Types
: Node_Id
renames Args
(3);
6722 Mechanism
: Node_Id
renames Args
(4);
6723 First_Optional_Parameter
: Node_Id
renames Args
(5);
6727 Gather_Associations
(Names
, Args
);
6728 Process_Extended_Import_Export_Subprogram_Pragma
(
6729 Arg_Internal
=> Internal
,
6730 Arg_External
=> External
,
6731 Arg_Parameter_Types
=> Parameter_Types
,
6732 Arg_Mechanism
=> Mechanism
,
6733 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
6734 end Import_Procedure
;
6736 -----------------------------
6737 -- Import_Valued_Procedure --
6738 -----------------------------
6740 -- pragma Import_Valued_Procedure (
6741 -- [Internal =>] LOCAL_NAME,
6742 -- [, [External =>] EXTERNAL_SYMBOL]
6743 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6744 -- [, [Mechanism =>] MECHANISM]
6745 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
6747 -- EXTERNAL_SYMBOL ::=
6749 -- | static_string_EXPRESSION
6751 -- PARAMETER_TYPES ::=
6753 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6755 -- TYPE_DESIGNATOR ::=
6757 -- | subtype_Name ' Access
6761 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6763 -- MECHANISM_ASSOCIATION ::=
6764 -- [formal_parameter_NAME =>] MECHANISM_NAME
6766 -- MECHANISM_NAME ::=
6769 -- | Descriptor [([Class =>] CLASS_NAME)]
6771 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6773 when Pragma_Import_Valued_Procedure
=>
6774 Import_Valued_Procedure
: declare
6775 Args
: Args_List
(1 .. 5);
6776 Names
: constant Name_List
(1 .. 5) := (
6779 Name_Parameter_Types
,
6781 Name_First_Optional_Parameter
);
6783 Internal
: Node_Id
renames Args
(1);
6784 External
: Node_Id
renames Args
(2);
6785 Parameter_Types
: Node_Id
renames Args
(3);
6786 Mechanism
: Node_Id
renames Args
(4);
6787 First_Optional_Parameter
: Node_Id
renames Args
(5);
6791 Gather_Associations
(Names
, Args
);
6792 Process_Extended_Import_Export_Subprogram_Pragma
(
6793 Arg_Internal
=> Internal
,
6794 Arg_External
=> External
,
6795 Arg_Parameter_Types
=> Parameter_Types
,
6796 Arg_Mechanism
=> Mechanism
,
6797 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
6798 end Import_Valued_Procedure
;
6800 ------------------------
6801 -- Initialize_Scalars --
6802 ------------------------
6804 -- pragma Initialize_Scalars;
6806 when Pragma_Initialize_Scalars
=>
6808 Check_Arg_Count
(0);
6809 Check_Valid_Configuration_Pragma
;
6810 Check_Restriction
(No_Initialize_Scalars
, N
);
6812 if not Restriction_Active
(No_Initialize_Scalars
) then
6813 Init_Or_Norm_Scalars
:= True;
6814 Initialize_Scalars
:= True;
6821 -- pragma Inline ( NAME {, NAME} );
6823 when Pragma_Inline
=>
6825 -- Pragma is active if inlining option is active
6827 if Inline_Active
then
6828 Process_Inline
(True);
6830 -- Pragma is active in a predefined file in config run time mode
6832 elsif Configurable_Run_Time_Mode
6834 Is_Predefined_File_Name
(Unit_File_Name
(Current_Sem_Unit
))
6836 Process_Inline
(True);
6838 -- Otherwise inlining is not active
6841 Process_Inline
(False);
6848 -- pragma Inline_Always ( NAME {, NAME} );
6850 when Pragma_Inline_Always
=>
6851 Process_Inline
(True);
6853 --------------------
6854 -- Inline_Generic --
6855 --------------------
6857 -- pragma Inline_Generic (NAME {, NAME});
6859 when Pragma_Inline_Generic
=>
6860 Process_Generic_List
;
6862 ----------------------
6863 -- Inspection_Point --
6864 ----------------------
6866 -- pragma Inspection_Point [(object_NAME {, object_NAME})];
6868 when Pragma_Inspection_Point
=> Inspection_Point
: declare
6873 if Arg_Count
> 0 then
6876 Exp
:= Expression
(Arg
);
6879 if not Is_Entity_Name
(Exp
)
6880 or else not Is_Object
(Entity
(Exp
))
6882 Error_Pragma_Arg
("object name required", Arg
);
6889 end Inspection_Point
;
6895 -- pragma Interface (
6896 -- convention_IDENTIFIER,
6899 when Pragma_Interface
=>
6901 Check_Arg_Count
(2);
6902 Check_No_Identifiers
;
6903 Process_Import_Or_Interface
;
6905 --------------------
6906 -- Interface_Name --
6907 --------------------
6909 -- pragma Interface_Name (
6910 -- [ Entity =>] local_NAME
6911 -- [,[External_Name =>] static_string_EXPRESSION ]
6912 -- [,[Link_Name =>] static_string_EXPRESSION ]);
6914 when Pragma_Interface_Name
=> Interface_Name
: declare
6922 Check_At_Least_N_Arguments
(2);
6923 Check_At_Most_N_Arguments
(3);
6924 Id
:= Expression
(Arg1
);
6927 if not Is_Entity_Name
(Id
) then
6929 ("first argument for pragma% must be entity name", Arg1
);
6930 elsif Etype
(Id
) = Any_Type
then
6933 Def_Id
:= Entity
(Id
);
6936 -- Special DEC-compatible processing for the object case,
6937 -- forces object to be imported.
6939 if Ekind
(Def_Id
) = E_Variable
then
6940 Kill_Size_Check_Code
(Def_Id
);
6941 Note_Possible_Modification
(Id
);
6943 -- Initialization is not allowed for imported variable
6945 if Present
(Expression
(Parent
(Def_Id
)))
6946 and then Comes_From_Source
(Expression
(Parent
(Def_Id
)))
6948 Error_Msg_Sloc
:= Sloc
(Def_Id
);
6950 ("no initialization allowed for declaration of& #",
6954 -- For compatibility, support VADS usage of providing both
6955 -- pragmas Interface and Interface_Name to obtain the effect
6956 -- of a single Import pragma.
6958 if Is_Imported
(Def_Id
)
6959 and then Present
(First_Rep_Item
(Def_Id
))
6960 and then Nkind
(First_Rep_Item
(Def_Id
)) = N_Pragma
6961 and then Chars
(First_Rep_Item
(Def_Id
)) = Name_Interface
6965 Set_Imported
(Def_Id
);
6968 Set_Is_Public
(Def_Id
);
6969 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
6972 -- Otherwise must be subprogram
6974 elsif not Is_Subprogram
(Def_Id
) then
6976 ("argument of pragma% is not subprogram", Arg1
);
6979 Check_At_Most_N_Arguments
(3);
6983 -- Loop through homonyms
6986 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
6988 if Is_Imported
(Def_Id
) then
6989 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
6993 Hom_Id
:= Homonym
(Hom_Id
);
6995 exit when No
(Hom_Id
)
6996 or else Scope
(Hom_Id
) /= Current_Scope
;
7001 ("argument of pragma% is not imported subprogram",
7007 -----------------------
7008 -- Interrupt_Handler --
7009 -----------------------
7011 -- pragma Interrupt_Handler (handler_NAME);
7013 when Pragma_Interrupt_Handler
=>
7014 Check_Ada_83_Warning
;
7015 Check_Arg_Count
(1);
7016 Check_No_Identifiers
;
7018 if No_Run_Time_Mode
then
7019 Error_Msg_CRT
("Interrupt_Handler pragma", N
);
7021 Check_Interrupt_Or_Attach_Handler
;
7022 Process_Interrupt_Or_Attach_Handler
;
7025 ------------------------
7026 -- Interrupt_Priority --
7027 ------------------------
7029 -- pragma Interrupt_Priority [(EXPRESSION)];
7031 when Pragma_Interrupt_Priority
=> Interrupt_Priority
: declare
7032 P
: constant Node_Id
:= Parent
(N
);
7036 Check_Ada_83_Warning
;
7038 if Arg_Count
/= 0 then
7039 Arg
:= Expression
(Arg1
);
7040 Check_Arg_Count
(1);
7041 Check_No_Identifiers
;
7043 -- The expression must be analyzed in the special manner
7044 -- described in "Handling of Default and Per-Object
7045 -- Expressions" in sem.ads.
7047 Analyze_Per_Use_Expression
(Arg
, RTE
(RE_Interrupt_Priority
));
7050 if Nkind
(P
) /= N_Task_Definition
7051 and then Nkind
(P
) /= N_Protected_Definition
7056 elsif Has_Priority_Pragma
(P
) then
7057 Error_Pragma
("duplicate pragma% not allowed");
7060 Set_Has_Priority_Pragma
(P
, True);
7061 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
7063 end Interrupt_Priority
;
7065 ---------------------
7066 -- Interrupt_State --
7067 ---------------------
7069 -- pragma Interrupt_State (
7070 -- [Name =>] INTERRUPT_ID,
7071 -- [State =>] INTERRUPT_STATE);
7073 -- INTERRUPT_ID => IDENTIFIER | static_integer_EXPRESSION
7074 -- INTERRUPT_STATE => System | Runtime | User
7076 -- Note: if the interrupt id is given as an identifier, then
7077 -- it must be one of the identifiers in Ada.Interrupts.Names.
7078 -- Otherwise it is given as a static integer expression which
7079 -- must be in the range of Ada.Interrupts.Interrupt_ID.
7081 when Pragma_Interrupt_State
=> Interrupt_State
: declare
7083 Int_Id
: constant Entity_Id
:= RTE
(RE_Interrupt_ID
);
7084 -- This is the entity Ada.Interrupts.Interrupt_ID;
7086 State_Type
: Character;
7087 -- Set to 's'/'r'/'u' for System/Runtime/User
7090 -- Index to entry in Interrupt_States table
7093 -- Value of interrupt
7095 Arg1X
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
7096 -- The first argument to the pragma
7098 Int_Ent
: Entity_Id
;
7099 -- Interrupt entity in Ada.Interrupts.Names
7103 Check_Arg_Count
(2);
7105 Check_Optional_Identifier
(Arg1
, Name_Name
);
7106 Check_Optional_Identifier
(Arg2
, "state");
7107 Check_Arg_Is_Identifier
(Arg2
);
7109 -- First argument is identifier
7111 if Nkind
(Arg1X
) = N_Identifier
then
7113 -- Search list of names in Ada.Interrupts.Names
7115 Int_Ent
:= First_Entity
(RTE
(RE_Names
));
7117 if No
(Int_Ent
) then
7118 Error_Pragma_Arg
("invalid interrupt name", Arg1
);
7120 elsif Chars
(Int_Ent
) = Chars
(Arg1X
) then
7121 Int_Val
:= Expr_Value
(Constant_Value
(Int_Ent
));
7125 Next_Entity
(Int_Ent
);
7128 -- First argument is not an identifier, so it must be a
7129 -- static expression of type Ada.Interrupts.Interrupt_ID.
7132 Check_Arg_Is_Static_Expression
(Arg1
, Any_Integer
);
7133 Int_Val
:= Expr_Value
(Arg1X
);
7135 if Int_Val
< Expr_Value
(Type_Low_Bound
(Int_Id
))
7137 Int_Val
> Expr_Value
(Type_High_Bound
(Int_Id
))
7140 ("value not in range of type " &
7141 """Ada.Interrupts.Interrupt_'I'D""", Arg1
);
7147 case Chars
(Get_Pragma_Arg
(Arg2
)) is
7148 when Name_Runtime
=> State_Type
:= 'r';
7149 when Name_System
=> State_Type
:= 's';
7150 when Name_User
=> State_Type
:= 'u';
7153 Error_Pragma_Arg
("invalid interrupt state", Arg2
);
7156 -- Check if entry is already stored
7158 IST_Num
:= Interrupt_States
.First
;
7160 -- If entry not found, add it
7162 if IST_Num
> Interrupt_States
.Last
then
7163 Interrupt_States
.Append
7164 ((Interrupt_Number
=> UI_To_Int
(Int_Val
),
7165 Interrupt_State
=> State_Type
,
7166 Pragma_Loc
=> Loc
));
7169 -- Case of entry for the same entry
7171 elsif Int_Val
= Interrupt_States
.Table
(IST_Num
).
7174 -- If state matches, done, no need to make redundant entry
7177 State_Type
= Interrupt_States
.Table
(IST_Num
).
7180 -- Otherwise if state does not match, error
7183 Interrupt_States
.Table
(IST_Num
).Pragma_Loc
;
7185 ("state conflicts with that given at #", Arg2
);
7189 IST_Num
:= IST_Num
+ 1;
7191 end Interrupt_State
;
7193 ----------------------
7194 -- Java_Constructor --
7195 ----------------------
7197 -- pragma Java_Constructor ([Entity =>] LOCAL_NAME);
7199 when Pragma_Java_Constructor
=> Java_Constructor
: declare
7206 Check_Arg_Count
(1);
7207 Check_Optional_Identifier
(Arg1
, Name_Entity
);
7208 Check_Arg_Is_Local_Name
(Arg1
);
7210 Id
:= Expression
(Arg1
);
7211 Find_Program_Unit_Name
(Id
);
7213 -- If we did not find the name, we are done
7215 if Etype
(Id
) = Any_Type
then
7219 Hom_Id
:= Entity
(Id
);
7221 -- Loop through homonyms
7224 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
7226 -- The constructor is required to be a function returning
7227 -- an access type whose designated type has convention Java.
7229 if Ekind
(Def_Id
) = E_Function
7230 and then Ekind
(Etype
(Def_Id
)) in Access_Kind
7233 (Designated_Type
(Etype
(Def_Id
))) = Convention_Java
7236 (Root_Type
(Designated_Type
(Etype
(Def_Id
))))
7239 Set_Is_Constructor
(Def_Id
);
7240 Set_Convention
(Def_Id
, Convention_Java
);
7244 ("pragma% requires function returning a 'Java access type",
7248 Hom_Id
:= Homonym
(Hom_Id
);
7250 exit when No
(Hom_Id
) or else Scope
(Hom_Id
) /= Current_Scope
;
7252 end Java_Constructor
;
7254 ----------------------
7255 -- Java_Interface --
7256 ----------------------
7258 -- pragma Java_Interface ([Entity =>] LOCAL_NAME);
7260 when Pragma_Java_Interface
=> Java_Interface
: declare
7266 Check_Arg_Count
(1);
7267 Check_Optional_Identifier
(Arg1
, Name_Entity
);
7268 Check_Arg_Is_Local_Name
(Arg1
);
7270 Arg
:= Expression
(Arg1
);
7273 if Etype
(Arg
) = Any_Type
then
7277 if not Is_Entity_Name
(Arg
)
7278 or else not Is_Type
(Entity
(Arg
))
7280 Error_Pragma_Arg
("pragma% requires a type mark", Arg1
);
7283 Typ
:= Underlying_Type
(Entity
(Arg
));
7285 -- For now we simply check some of the semantic constraints
7286 -- on the type. This currently leaves out some restrictions
7287 -- on interface types, namely that the parent type must be
7288 -- java.lang.Object.Typ and that all primitives of the type
7289 -- should be declared abstract. ???
7291 if not Is_Tagged_Type
(Typ
) or else not Is_Abstract
(Typ
) then
7292 Error_Pragma_Arg
("pragma% requires an abstract "
7293 & "tagged type", Arg1
);
7295 elsif not Has_Discriminants
(Typ
)
7296 or else Ekind
(Etype
(First_Discriminant
(Typ
)))
7297 /= E_Anonymous_Access_Type
7299 not Is_Class_Wide_Type
7300 (Designated_Type
(Etype
(First_Discriminant
(Typ
))))
7303 ("type must have a class-wide access discriminant", Arg1
);
7311 -- pragma Keep_Names ([On => ] local_NAME);
7313 when Pragma_Keep_Names
=> Keep_Names
: declare
7318 Check_Arg_Count
(1);
7319 Check_Optional_Identifier
(Arg1
, Name_On
);
7320 Check_Arg_Is_Local_Name
(Arg1
);
7322 Arg
:= Expression
(Arg1
);
7325 if Etype
(Arg
) = Any_Type
then
7329 if not Is_Entity_Name
(Arg
)
7330 or else Ekind
(Entity
(Arg
)) /= E_Enumeration_Type
7333 ("pragma% requires a local enumeration type", Arg1
);
7336 Set_Discard_Names
(Entity
(Arg
), False);
7343 -- pragma License (RESTRICTED | UNRESRICTED | GPL | MODIFIED_GPL);
7345 when Pragma_License
=>
7347 Check_Arg_Count
(1);
7348 Check_No_Identifiers
;
7349 Check_Valid_Configuration_Pragma
;
7350 Check_Arg_Is_Identifier
(Arg1
);
7353 Sind
: constant Source_File_Index
:=
7354 Source_Index
(Current_Sem_Unit
);
7357 case Chars
(Get_Pragma_Arg
(Arg1
)) is
7359 Set_License
(Sind
, GPL
);
7361 when Name_Modified_GPL
=>
7362 Set_License
(Sind
, Modified_GPL
);
7364 when Name_Restricted
=>
7365 Set_License
(Sind
, Restricted
);
7367 when Name_Unrestricted
=>
7368 Set_License
(Sind
, Unrestricted
);
7371 Error_Pragma_Arg
("invalid license name", Arg1
);
7379 -- pragma Link_With (string_EXPRESSION {, string_EXPRESSION});
7381 when Pragma_Link_With
=> Link_With
: declare
7387 if Operating_Mode
= Generate_Code
7388 and then In_Extended_Main_Source_Unit
(N
)
7390 Check_At_Least_N_Arguments
(1);
7391 Check_No_Identifiers
;
7392 Check_Is_In_Decl_Part_Or_Package_Spec
;
7393 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
7397 while Present
(Arg
) loop
7398 Check_Arg_Is_Static_Expression
(Arg
, Standard_String
);
7400 -- Store argument, converting sequences of spaces
7401 -- to a single null character (this is one of the
7402 -- differences in processing between Link_With
7403 -- and Linker_Options).
7406 C
: constant Char_Code
:= Get_Char_Code
(' ');
7407 S
: constant String_Id
:=
7408 Strval
(Expr_Value_S
(Expression
(Arg
)));
7409 L
: constant Nat
:= String_Length
(S
);
7412 procedure Skip_Spaces
;
7413 -- Advance F past any spaces
7415 procedure Skip_Spaces
is
7417 while F
<= L
and then Get_String_Char
(S
, F
) = C
loop
7423 Skip_Spaces
; -- skip leading spaces
7425 -- Loop through characters, changing any embedded
7426 -- sequence of spaces to a single null character
7427 -- (this is how Link_With/Linker_Options differ)
7430 if Get_String_Char
(S
, F
) = C
then
7433 Store_String_Char
(ASCII
.NUL
);
7436 Store_String_Char
(Get_String_Char
(S
, F
));
7444 if Present
(Arg
) then
7445 Store_String_Char
(ASCII
.NUL
);
7449 Store_Linker_Option_String
(End_String
);
7457 -- pragma Linker_Alias (
7458 -- [Entity =>] LOCAL_NAME
7459 -- [Alias =>] static_string_EXPRESSION);
7461 when Pragma_Linker_Alias
=>
7463 Check_Arg_Count
(2);
7464 Check_Optional_Identifier
(Arg1
, Name_Entity
);
7465 Check_Optional_Identifier
(Arg2
, "alias");
7466 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
7467 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
7469 -- The only processing required is to link this item on to the
7470 -- list of rep items for the given entity. This is accomplished
7471 -- by the call to Rep_Item_Too_Late (when no error is detected
7472 -- and False is returned).
7474 if Rep_Item_Too_Late
(Entity
(Expression
(Arg1
)), N
) then
7477 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
7480 --------------------
7481 -- Linker_Options --
7482 --------------------
7484 -- pragma Linker_Options (string_EXPRESSION {, string_EXPRESSION});
7486 when Pragma_Linker_Options
=> Linker_Options
: declare
7490 Check_Ada_83_Warning
;
7491 Check_No_Identifiers
;
7492 Check_Arg_Count
(1);
7493 Check_Is_In_Decl_Part_Or_Package_Spec
;
7495 if Operating_Mode
= Generate_Code
7496 and then In_Extended_Main_Source_Unit
(N
)
7498 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
7499 Start_String
(Strval
(Expr_Value_S
(Expression
(Arg1
))));
7502 while Present
(Arg
) loop
7503 Check_Arg_Is_Static_Expression
(Arg
, Standard_String
);
7504 Store_String_Char
(ASCII
.NUL
);
7506 (Strval
(Expr_Value_S
(Expression
(Arg
))));
7510 Store_Linker_Option_String
(End_String
);
7514 --------------------
7515 -- Linker_Section --
7516 --------------------
7518 -- pragma Linker_Section (
7519 -- [Entity =>] LOCAL_NAME
7520 -- [Section =>] static_string_EXPRESSION);
7522 when Pragma_Linker_Section
=>
7524 Check_Arg_Count
(2);
7525 Check_Optional_Identifier
(Arg1
, Name_Entity
);
7526 Check_Optional_Identifier
(Arg2
, Name_Section
);
7527 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
7528 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
7530 -- The only processing required is to link this item on to the
7531 -- list of rep items for the given entity. This is accomplished
7532 -- by the call to Rep_Item_Too_Late (when no error is detected
7533 -- and False is returned).
7535 if Rep_Item_Too_Late
(Entity
(Expression
(Arg1
)), N
) then
7538 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
7545 -- pragma List (On | Off)
7547 -- There is nothing to do here, since we did all the processing
7548 -- for this pragma in Par.Prag (so that it works properly even in
7549 -- syntax only mode)
7554 --------------------
7555 -- Locking_Policy --
7556 --------------------
7558 -- pragma Locking_Policy (policy_IDENTIFIER);
7560 when Pragma_Locking_Policy
=> declare
7564 Check_Ada_83_Warning
;
7565 Check_Arg_Count
(1);
7566 Check_No_Identifiers
;
7567 Check_Arg_Is_Locking_Policy
(Arg1
);
7568 Check_Valid_Configuration_Pragma
;
7569 Get_Name_String
(Chars
(Expression
(Arg1
)));
7570 LP
:= Fold_Upper
(Name_Buffer
(1));
7572 if Locking_Policy
/= ' '
7573 and then Locking_Policy
/= LP
7575 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
7576 Error_Pragma
("locking policy incompatible with policy#");
7578 -- Set new policy, but always preserve System_Location since
7579 -- we like the error message with the run time name.
7582 Locking_Policy
:= LP
;
7584 if Locking_Policy_Sloc
/= System_Location
then
7585 Locking_Policy_Sloc
:= Loc
;
7594 -- pragma Long_Float (D_Float | G_Float);
7596 when Pragma_Long_Float
=>
7598 Check_Valid_Configuration_Pragma
;
7599 Check_Arg_Count
(1);
7600 Check_No_Identifier
(Arg1
);
7601 Check_Arg_Is_One_Of
(Arg1
, Name_D_Float
, Name_G_Float
);
7603 if not OpenVMS_On_Target
then
7604 Error_Pragma
("?pragma% ignored (applies only to Open'V'M'S)");
7609 if Chars
(Expression
(Arg1
)) = Name_D_Float
then
7610 if Opt
.Float_Format_Long
= 'G' then
7611 Error_Pragma
("G_Float previously specified");
7614 Opt
.Float_Format_Long
:= 'D';
7616 -- G_Float case (this is the default, does not need overriding)
7619 if Opt
.Float_Format_Long
= 'D' then
7620 Error_Pragma
("D_Float previously specified");
7623 Opt
.Float_Format_Long
:= 'G';
7626 Set_Standard_Fpt_Formats
;
7628 -----------------------
7629 -- Machine_Attribute --
7630 -----------------------
7632 -- pragma Machine_Attribute (
7633 -- [Entity =>] LOCAL_NAME,
7634 -- [Attribute_Name =>] static_string_EXPRESSION
7635 -- [,[Info =>] static_string_EXPRESSION] );
7637 when Pragma_Machine_Attribute
=> Machine_Attribute
: declare
7643 if Arg_Count
= 3 then
7644 Check_Optional_Identifier
(Arg3
, "info");
7645 Check_Arg_Is_Static_Expression
(Arg3
, Standard_String
);
7647 Check_Arg_Count
(2);
7650 Check_Arg_Is_Local_Name
(Arg1
);
7651 Check_Optional_Identifier
(Arg2
, "attribute_name");
7652 Check_Optional_Identifier
(Arg1
, Name_Entity
);
7653 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
7654 Def_Id
:= Entity
(Expression
(Arg1
));
7656 if Is_Access_Type
(Def_Id
) then
7657 Def_Id
:= Designated_Type
(Def_Id
);
7660 if Rep_Item_Too_Early
(Def_Id
, N
) then
7664 Def_Id
:= Underlying_Type
(Def_Id
);
7666 -- The only processing required is to link this item on to the
7667 -- list of rep items for the given entity. This is accomplished
7668 -- by the call to Rep_Item_Too_Late (when no error is detected
7669 -- and False is returned).
7671 if Rep_Item_Too_Late
(Def_Id
, N
) then
7674 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
7676 end Machine_Attribute
;
7682 -- pragma Main_Storage
7683 -- (MAIN_STORAGE_OPTION [, MAIN_STORAGE_OPTION]);
7685 -- MAIN_STORAGE_OPTION ::=
7686 -- [WORKING_STORAGE =>] static_SIMPLE_EXPRESSION
7687 -- | [TOP_GUARD =>] static_SIMPLE_EXPRESSION
7689 when Pragma_Main
=> Main
: declare
7690 Args
: Args_List
(1 .. 3);
7691 Names
: constant Name_List
(1 .. 3) := (
7693 Name_Task_Stack_Size_Default
,
7694 Name_Time_Slicing_Enabled
);
7700 Gather_Associations
(Names
, Args
);
7702 for J
in 1 .. 2 loop
7703 if Present
(Args
(J
)) then
7704 Check_Arg_Is_Static_Expression
(Args
(J
), Any_Integer
);
7708 if Present
(Args
(3)) then
7709 Check_Arg_Is_Static_Expression
(Args
(3), Standard_Boolean
);
7713 while Present
(Nod
) loop
7714 if Nkind
(Nod
) = N_Pragma
7715 and then Chars
(Nod
) = Name_Main
7717 Error_Msg_Name_1
:= Chars
(N
);
7718 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
7729 -- pragma Main_Storage
7730 -- (MAIN_STORAGE_OPTION [, MAIN_STORAGE_OPTION]);
7732 -- MAIN_STORAGE_OPTION ::=
7733 -- [WORKING_STORAGE =>] static_SIMPLE_EXPRESSION
7734 -- | [TOP_GUARD =>] static_SIMPLE_EXPRESSION
7736 when Pragma_Main_Storage
=> Main_Storage
: declare
7737 Args
: Args_List
(1 .. 2);
7738 Names
: constant Name_List
(1 .. 2) := (
7739 Name_Working_Storage
,
7746 Gather_Associations
(Names
, Args
);
7748 for J
in 1 .. 2 loop
7749 if Present
(Args
(J
)) then
7750 Check_Arg_Is_Static_Expression
(Args
(J
), Any_Integer
);
7754 Check_In_Main_Program
;
7757 while Present
(Nod
) loop
7758 if Nkind
(Nod
) = N_Pragma
7759 and then Chars
(Nod
) = Name_Main_Storage
7761 Error_Msg_Name_1
:= Chars
(N
);
7762 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
7773 -- pragma Memory_Size (NUMERIC_LITERAL)
7775 when Pragma_Memory_Size
=>
7778 -- Memory size is simply ignored
7780 Check_No_Identifiers
;
7781 Check_Arg_Count
(1);
7782 Check_Arg_Is_Integer_Literal
(Arg1
);
7788 -- pragma No_Return (procedure_LOCAL_NAME);
7790 when Pragma_No_Return
=> No_Return
: declare
7797 Check_Arg_Count
(1);
7798 Check_No_Identifiers
;
7799 Check_Arg_Is_Local_Name
(Arg1
);
7800 Id
:= Expression
(Arg1
);
7803 if not Is_Entity_Name
(Id
) then
7804 Error_Pragma_Arg
("entity name required", Arg1
);
7807 if Etype
(Id
) = Any_Type
then
7815 and then Scope
(E
) = Current_Scope
7817 if Ekind
(E
) = E_Procedure
7818 or else Ekind
(E
) = E_Generic_Procedure
7828 Error_Pragma
("no procedures found for pragma%");
7832 ------------------------
7833 -- No_Strict_Aliasing --
7834 ------------------------
7836 when Pragma_No_Strict_Aliasing
=> No_Strict_Alias
: declare
7841 Check_At_Most_N_Arguments
(1);
7843 if Arg_Count
= 0 then
7844 Check_Valid_Configuration_Pragma
;
7845 Opt
.No_Strict_Aliasing
:= True;
7848 Check_Optional_Identifier
(Arg2
, Name_Entity
);
7849 Check_Arg_Is_Local_Name
(Arg1
);
7850 E_Id
:= Entity
(Expression
(Arg1
));
7852 if E_Id
= Any_Type
then
7854 elsif No
(E_Id
) or else not Is_Access_Type
(E_Id
) then
7855 Error_Pragma_Arg
("pragma% requires access type", Arg1
);
7858 Set_No_Strict_Aliasing
(Implementation_Base_Type
(E_Id
));
7860 end No_Strict_Alias
;
7866 -- pragma Obsolescent [(static_string_EXPRESSION)];
7868 when Pragma_Obsolescent
=> Obsolescent
: declare
7871 Check_At_Most_N_Arguments
(1);
7872 Check_No_Identifiers
;
7874 if Arg_Count
= 1 then
7875 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
7879 or else (Nkind
(Prev
(N
))) /= N_Subprogram_Declaration
7882 ("pragma% misplaced, must immediately " &
7883 "follow subprogram spec");
7891 -- pragma No_Run_Time
7893 -- Note: this pragma is retained for backwards compatibiltiy.
7894 -- See body of Rtsfind for full details on its handling.
7896 when Pragma_No_Run_Time
=>
7898 Check_Valid_Configuration_Pragma
;
7899 Check_Arg_Count
(0);
7901 No_Run_Time_Mode
:= True;
7902 Configurable_Run_Time_Mode
:= True;
7905 Word32
: constant Boolean := Ttypes
.System_Word_Size
= 32;
7908 Duration_32_Bits_On_Target
:= True;
7912 Set_Restriction
(No_Finalization
, N
);
7913 Set_Restriction
(No_Exception_Handlers
, N
);
7914 Set_Restriction
(Max_Tasks
, N
, 0);
7915 Set_Restriction
(No_Tasking
, N
);
7917 -----------------------
7918 -- Normalize_Scalars --
7919 -----------------------
7921 -- pragma Normalize_Scalars;
7923 when Pragma_Normalize_Scalars
=>
7924 Check_Ada_83_Warning
;
7925 Check_Arg_Count
(0);
7926 Check_Valid_Configuration_Pragma
;
7927 Normalize_Scalars
:= True;
7928 Init_Or_Norm_Scalars
:= True;
7934 -- pragma Optimize (Time | Space);
7936 -- The actual check for optimize is done in Gigi. Note that this
7937 -- pragma does not actually change the optimization setting, it
7938 -- simply checks that it is consistent with the pragma.
7940 when Pragma_Optimize
=>
7941 Check_No_Identifiers
;
7942 Check_Arg_Count
(1);
7943 Check_Arg_Is_One_Of
(Arg1
, Name_Time
, Name_Space
, Name_Off
);
7945 -------------------------
7946 -- Optional_Overriding --
7947 -------------------------
7949 -- These pragmas are treated as part of the previous subprogram
7950 -- declaration, and analyzed immediately after it (see sem_ch6,
7951 -- Check_Overriding_Operation). If the pragma has not been analyzed
7952 -- yet, it appears in the wrong place.
7954 when Pragma_Optional_Overriding
=>
7955 Error_Msg_N
("pragma must appear immediately after subprogram", N
);
7961 when Pragma_Overriding
=>
7962 Error_Msg_N
("pragma must appear immediately after subprogram", N
);
7968 -- pragma Pack (first_subtype_LOCAL_NAME);
7970 when Pragma_Pack
=> Pack
: declare
7971 Assoc
: constant Node_Id
:= Arg1
;
7976 Check_No_Identifiers
;
7977 Check_Arg_Count
(1);
7978 Check_Arg_Is_Local_Name
(Arg1
);
7980 Type_Id
:= Expression
(Assoc
);
7981 Find_Type
(Type_Id
);
7982 Typ
:= Entity
(Type_Id
);
7985 or else Rep_Item_Too_Early
(Typ
, N
)
7989 Typ
:= Underlying_Type
(Typ
);
7992 if not Is_Array_Type
(Typ
) and then not Is_Record_Type
(Typ
) then
7993 Error_Pragma
("pragma% must specify array or record type");
7996 Check_First_Subtype
(Arg1
);
7998 if Has_Pragma_Pack
(Typ
) then
7999 Error_Pragma
("duplicate pragma%, only one allowed");
8001 -- Array type. We set the Has_Pragma_Pack flag, and Is_Packed,
8002 -- but not Has_Non_Standard_Rep, because we don't actually know
8003 -- till freeze time if the array can have packed representation.
8004 -- That's because in the general case we do not know enough about
8005 -- the component type until it in turn is frozen, which certainly
8006 -- happens before the array type is frozen, but not necessarily
8007 -- till that point (i.e. right now it may be unfrozen).
8009 elsif Is_Array_Type
(Typ
) then
8010 if Has_Aliased_Components
(Base_Type
(Typ
)) then
8012 ("pragma% ignored, cannot pack aliased components?");
8014 elsif Has_Atomic_Components
(Typ
)
8015 or else Is_Atomic
(Component_Type
(Typ
))
8018 ("?pragma% ignored, cannot pack atomic components");
8020 elsif not Rep_Item_Too_Late
(Typ
, N
) then
8021 Set_Is_Packed
(Base_Type
(Typ
));
8022 Set_Has_Pragma_Pack
(Base_Type
(Typ
));
8023 Set_Has_Non_Standard_Rep
(Base_Type
(Typ
));
8026 -- Record type. For record types, the pack is always effective
8028 else pragma Assert
(Is_Record_Type
(Typ
));
8029 if not Rep_Item_Too_Late
(Typ
, N
) then
8030 Set_Has_Pragma_Pack
(Base_Type
(Typ
));
8031 Set_Is_Packed
(Base_Type
(Typ
));
8032 Set_Has_Non_Standard_Rep
(Base_Type
(Typ
));
8043 -- There is nothing to do here, since we did all the processing
8044 -- for this pragma in Par.Prag (so that it works properly even in
8045 -- syntax only mode)
8054 -- pragma Passive [(PASSIVE_FORM)];
8056 -- PASSIVE_FORM ::= Semaphore | No
8058 when Pragma_Passive
=>
8061 if Nkind
(Parent
(N
)) /= N_Task_Definition
then
8062 Error_Pragma
("pragma% must be within task definition");
8065 if Arg_Count
/= 0 then
8066 Check_Arg_Count
(1);
8067 Check_Arg_Is_One_Of
(Arg1
, Name_Semaphore
, Name_No
);
8074 -- pragma Polling (ON | OFF);
8076 when Pragma_Polling
=>
8078 Check_Arg_Count
(1);
8079 Check_No_Identifiers
;
8080 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
8081 Polling_Required
:= (Chars
(Expression
(Arg1
)) = Name_On
);
8083 ---------------------
8084 -- Persistent_Data --
8085 ---------------------
8087 when Pragma_Persistent_Data
=> declare
8091 -- Register the pragma as applying to the compilation unit.
8092 -- Individual Persistent_Object pragmas for relevant objects
8093 -- are generated the end of the compilation.
8096 Check_Valid_Configuration_Pragma
;
8097 Check_Arg_Count
(0);
8098 Ent
:= Find_Lib_Unit_Name
;
8099 Set_Is_Preelaborated
(Ent
);
8102 -----------------------
8103 -- Persistent_Object --
8104 -----------------------
8106 when Pragma_Persistent_Object
=> declare
8114 Check_Arg_Count
(1);
8115 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
8117 if not Is_Entity_Name
(Expression
(Arg1
))
8119 (Ekind
(Entity
(Expression
(Arg1
))) /= E_Variable
8120 and then Ekind
(Entity
(Expression
(Arg1
))) /= E_Constant
)
8122 Error_Pragma_Arg
("pragma only applies to objects", Arg1
);
8125 Ent
:= Entity
(Expression
(Arg1
));
8126 Decl
:= Parent
(Ent
);
8128 if Nkind
(Decl
) /= N_Object_Declaration
then
8132 -- Placement of the object depends on whether there is
8133 -- an initial value or none. If the No_Initialization flag
8134 -- is set, the initialization has been transformed into
8135 -- assignments, which is disallowed elaboration code.
8137 if No_Initialization
(Decl
) then
8139 ("initialization for persistent object"
8140 & "must be static expression", Decl
);
8144 if No
(Expression
(Decl
)) then
8146 Store_String_Chars
("section ("".persistent.bss"")");
8150 if not Is_OK_Static_Expression
(Expression
(Decl
)) then
8151 Flag_Non_Static_Expr
8152 ("initialization for persistent object"
8153 & "must be static expression!", Expression
(Decl
));
8158 Store_String_Chars
("section ("".persistent.data"")");
8165 Name_Machine_Attribute
,
8167 (Make_Pragma_Argument_Association
8168 (Sloc
=> Sloc
(Arg1
),
8169 Expression
=> New_Occurrence_Of
(Ent
, Sloc
(Ent
))),
8170 Make_Pragma_Argument_Association
8171 (Sloc
=> Sloc
(Arg1
),
8174 (Sloc
=> Sloc
(Arg1
),
8177 Insert_After
(N
, MA
);
8179 Set_Has_Gigi_Rep_Item
(Ent
);
8186 -- pragma Preelaborate [(library_unit_NAME)];
8188 -- Set the flag Is_Preelaborated of program unit name entity
8190 when Pragma_Preelaborate
=> Preelaborate
: declare
8191 Pa
: constant Node_Id
:= Parent
(N
);
8192 Pk
: constant Node_Kind
:= Nkind
(Pa
);
8196 Check_Ada_83_Warning
;
8197 Check_Valid_Library_Unit_Pragma
;
8199 if Nkind
(N
) = N_Null_Statement
then
8203 Ent
:= Find_Lib_Unit_Name
;
8205 -- This filters out pragmas inside generic parent then
8206 -- show up inside instantiation
8209 and then not (Pk
= N_Package_Specification
8210 and then Present
(Generic_Parent
(Pa
)))
8212 if not Debug_Flag_U
then
8213 Set_Is_Preelaborated
(Ent
);
8214 Set_Suppress_Elaboration_Warnings
(Ent
);
8223 -- pragma Priority (EXPRESSION);
8225 when Pragma_Priority
=> Priority
: declare
8226 P
: constant Node_Id
:= Parent
(N
);
8230 Check_No_Identifiers
;
8231 Check_Arg_Count
(1);
8235 if Nkind
(P
) = N_Subprogram_Body
then
8236 Check_In_Main_Program
;
8238 Arg
:= Expression
(Arg1
);
8239 Analyze_And_Resolve
(Arg
, Standard_Integer
);
8243 if not Is_Static_Expression
(Arg
) then
8244 Flag_Non_Static_Expr
8245 ("main subprogram priority is not static!", Arg
);
8248 -- If constraint error, then we already signalled an error
8250 elsif Raises_Constraint_Error
(Arg
) then
8253 -- Otherwise check in range
8257 Val
: constant Uint
:= Expr_Value
(Arg
);
8261 or else Val
> Expr_Value
(Expression
8262 (Parent
(RTE
(RE_Max_Priority
))))
8265 ("main subprogram priority is out of range", Arg1
);
8271 (Current_Sem_Unit
, UI_To_Int
(Expr_Value
(Arg
)));
8273 -- Task or Protected, must be of type Integer
8275 elsif Nkind
(P
) = N_Protected_Definition
8277 Nkind
(P
) = N_Task_Definition
8279 Arg
:= Expression
(Arg1
);
8281 -- The expression must be analyzed in the special manner
8282 -- described in "Handling of Default and Per-Object
8283 -- Expressions" in sem.ads.
8285 Analyze_Per_Use_Expression
(Arg
, Standard_Integer
);
8287 if not Is_Static_Expression
(Arg
) then
8288 Check_Restriction
(Static_Priorities
, Arg
);
8291 -- Anything else is incorrect
8297 if Has_Priority_Pragma
(P
) then
8298 Error_Pragma
("duplicate pragma% not allowed");
8300 Set_Has_Priority_Pragma
(P
, True);
8302 if Nkind
(P
) = N_Protected_Definition
8304 Nkind
(P
) = N_Task_Definition
8306 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
8307 -- exp_ch9 should use this ???
8316 -- pragma Profile (profile_IDENTIFIER);
8318 -- profile_IDENTIFIER => Protected | Ravenscar
8320 when Pragma_Profile
=>
8321 Check_Arg_Count
(1);
8322 Check_Valid_Configuration_Pragma
;
8323 Check_No_Identifiers
;
8326 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
8328 if Chars
(Argx
) = Name_Ravenscar
then
8329 Set_Ravenscar_Profile
(N
);
8331 elsif Chars
(Argx
) = Name_Restricted
then
8332 Set_Profile_Restrictions
(Restricted
, N
, Warn
=> False);
8334 Error_Pragma_Arg
("& is not a valid profile", Argx
);
8338 ----------------------
8339 -- Profile_Warnings --
8340 ----------------------
8342 -- pragma Profile_Warnings (profile_IDENTIFIER);
8344 -- profile_IDENTIFIER => Protected | Ravenscar
8346 when Pragma_Profile_Warnings
=>
8348 Check_Arg_Count
(1);
8349 Check_Valid_Configuration_Pragma
;
8350 Check_No_Identifiers
;
8353 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
8355 if Chars
(Argx
) = Name_Ravenscar
then
8356 Set_Profile_Restrictions
(Ravenscar
, N
, Warn
=> True);
8358 elsif Chars
(Argx
) = Name_Restricted
then
8359 Set_Profile_Restrictions
(Restricted
, N
, Warn
=> True);
8361 Error_Pragma_Arg
("& is not a valid profile", Argx
);
8365 --------------------------
8366 -- Propagate_Exceptions --
8367 --------------------------
8369 -- pragma Propagate_Exceptions;
8371 when Pragma_Propagate_Exceptions
=>
8373 Check_Arg_Count
(0);
8375 if In_Extended_Main_Source_Unit
(N
) then
8376 Propagate_Exceptions
:= True;
8383 -- pragma Psect_Object (
8384 -- [Internal =>] LOCAL_NAME,
8385 -- [, [External =>] EXTERNAL_SYMBOL]
8386 -- [, [Size =>] EXTERNAL_SYMBOL]);
8388 when Pragma_Psect_Object | Pragma_Common_Object
=>
8389 Psect_Object
: declare
8390 Args
: Args_List
(1 .. 3);
8391 Names
: constant Name_List
(1 .. 3) := (
8396 Internal
: Node_Id
renames Args
(1);
8397 External
: Node_Id
renames Args
(2);
8398 Size
: Node_Id
renames Args
(3);
8400 R_Internal
: Node_Id
;
8401 R_External
: Node_Id
;
8408 procedure Check_Too_Long
(Arg
: Node_Id
);
8409 -- Posts message if the argument is an identifier with more
8410 -- than 31 characters, or a string literal with more than
8411 -- 31 characters, and we are operating under VMS
8413 --------------------
8414 -- Check_Too_Long --
8415 --------------------
8417 procedure Check_Too_Long
(Arg
: Node_Id
) is
8418 X
: constant Node_Id
:= Original_Node
(Arg
);
8421 if Nkind
(X
) /= N_String_Literal
8423 Nkind
(X
) /= N_Identifier
8426 ("inappropriate argument for pragma %", Arg
);
8429 if OpenVMS_On_Target
then
8430 if (Nkind
(X
) = N_String_Literal
8431 and then String_Length
(Strval
(X
)) > 31)
8433 (Nkind
(X
) = N_Identifier
8434 and then Length_Of_Name
(Chars
(X
)) > 31)
8437 ("argument for pragma % is longer than 31 characters",
8443 -- Start of processing for Common_Object/Psect_Object
8447 Gather_Associations
(Names
, Args
);
8448 Process_Extended_Import_Export_Internal_Arg
(Internal
);
8450 R_Internal
:= Relocate_Node
(Internal
);
8452 Def_Id
:= Entity
(R_Internal
);
8454 if Ekind
(Def_Id
) /= E_Constant
8455 and then Ekind
(Def_Id
) /= E_Variable
8458 ("pragma% must designate an object", Internal
);
8461 Check_Too_Long
(R_Internal
);
8463 if Is_Imported
(Def_Id
) or else Is_Exported
(Def_Id
) then
8465 ("cannot use pragma% for imported/exported object",
8469 if Is_Concurrent_Type
(Etype
(R_Internal
)) then
8471 ("cannot specify pragma % for task/protected object",
8475 if Is_Psected
(Def_Id
) then
8476 Error_Msg_N
("?duplicate Psect_Object pragma", N
);
8478 Set_Is_Psected
(Def_Id
);
8481 if Ekind
(Def_Id
) = E_Constant
then
8483 ("cannot specify pragma % for a constant", R_Internal
);
8486 if Is_Record_Type
(Etype
(R_Internal
)) then
8492 Ent
:= First_Entity
(Etype
(R_Internal
));
8493 while Present
(Ent
) loop
8494 Decl
:= Declaration_Node
(Ent
);
8496 if Ekind
(Ent
) = E_Component
8497 and then Nkind
(Decl
) = N_Component_Declaration
8498 and then Present
(Expression
(Decl
))
8499 and then Warn_On_Export_Import
8502 ("?object for pragma % has defaults", R_Internal
);
8512 if Present
(Size
) then
8513 Check_Too_Long
(Size
);
8516 -- Make Psect case-insensitive.
8518 if Present
(External
) then
8519 Check_Too_Long
(External
);
8521 if Nkind
(External
) = N_String_Literal
then
8522 String_To_Name_Buffer
(Strval
(External
));
8524 Get_Name_String
(Chars
(External
));
8529 Store_String_Chars
(Name_Buffer
(1 .. Name_Len
));
8531 R_External
:= Make_String_Literal
8532 (Sloc
=> Sloc
(External
), Strval
=> Str
);
8534 Get_Name_String
(Chars
(Internal
));
8537 Store_String_Chars
(Name_Buffer
(1 .. Name_Len
));
8539 R_External
:= Make_String_Literal
8540 (Sloc
=> Sloc
(Internal
), Strval
=> Str
);
8543 -- Transform into pragma Linker_Section, add attributes to
8544 -- match what DEC Ada does. Ignore size for now?
8549 Name_Linker_Section
,
8551 (Make_Pragma_Argument_Association
8552 (Sloc
=> Sloc
(R_Internal
),
8553 Expression
=> R_Internal
),
8554 Make_Pragma_Argument_Association
8555 (Sloc
=> Sloc
(R_External
),
8556 Expression
=> R_External
))));
8560 -- Add Machine_Attribute of "overlaid", so the section overlays
8561 -- other sections of the same name.
8564 Store_String_Chars
("overlaid");
8570 Name_Machine_Attribute
,
8572 (Make_Pragma_Argument_Association
8573 (Sloc
=> Sloc
(R_Internal
),
8574 Expression
=> R_Internal
),
8575 Make_Pragma_Argument_Association
8576 (Sloc
=> Sloc
(R_External
),
8579 (Sloc
=> Sloc
(R_External
),
8583 -- Add Machine_Attribute of "global", so the section is visible
8587 Store_String_Chars
("global");
8593 Name_Machine_Attribute
,
8595 (Make_Pragma_Argument_Association
8596 (Sloc
=> Sloc
(R_Internal
),
8597 Expression
=> R_Internal
),
8599 Make_Pragma_Argument_Association
8600 (Sloc
=> Sloc
(R_External
),
8603 (Sloc
=> Sloc
(R_External
),
8607 -- Add Machine_Attribute of "initialize", so the section is
8611 Store_String_Chars
("initialize");
8617 Name_Machine_Attribute
,
8619 (Make_Pragma_Argument_Association
8620 (Sloc
=> Sloc
(R_Internal
),
8621 Expression
=> R_Internal
),
8623 Make_Pragma_Argument_Association
8624 (Sloc
=> Sloc
(R_External
),
8627 (Sloc
=> Sloc
(R_External
),
8636 -- pragma Pure [(library_unit_NAME)];
8638 when Pragma_Pure
=> Pure
: declare
8641 Check_Ada_83_Warning
;
8642 Check_Valid_Library_Unit_Pragma
;
8644 if Nkind
(N
) = N_Null_Statement
then
8648 Ent
:= Find_Lib_Unit_Name
;
8650 Set_Suppress_Elaboration_Warnings
(Ent
);
8657 -- pragma Pure_Function ([Entity =>] function_LOCAL_NAME);
8659 when Pragma_Pure_Function
=> Pure_Function
: declare
8663 Effective
: Boolean := False;
8667 Check_Arg_Count
(1);
8668 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8669 Check_Arg_Is_Local_Name
(Arg1
);
8670 E_Id
:= Expression
(Arg1
);
8672 if Error_Posted
(E_Id
) then
8676 -- Loop through homonyms (overloadings) of referenced entity
8682 Def_Id
:= Get_Base_Subprogram
(E
);
8684 if Ekind
(Def_Id
) /= E_Function
8685 and then Ekind
(Def_Id
) /= E_Generic_Function
8686 and then Ekind
(Def_Id
) /= E_Operator
8689 ("pragma% requires a function name", Arg1
);
8692 Set_Is_Pure
(Def_Id
);
8694 if not Has_Pragma_Pure_Function
(Def_Id
) then
8695 Set_Has_Pragma_Pure_Function
(Def_Id
);
8700 exit when No
(E
) or else Scope
(E
) /= Current_Scope
;
8704 and then Warn_On_Redundant_Constructs
8706 Error_Msg_NE
("pragma Pure_Function on& is redundant?",
8712 --------------------
8713 -- Queuing_Policy --
8714 --------------------
8716 -- pragma Queuing_Policy (policy_IDENTIFIER);
8718 when Pragma_Queuing_Policy
=> declare
8722 Check_Ada_83_Warning
;
8723 Check_Arg_Count
(1);
8724 Check_No_Identifiers
;
8725 Check_Arg_Is_Queuing_Policy
(Arg1
);
8726 Check_Valid_Configuration_Pragma
;
8727 Get_Name_String
(Chars
(Expression
(Arg1
)));
8728 QP
:= Fold_Upper
(Name_Buffer
(1));
8730 if Queuing_Policy
/= ' '
8731 and then Queuing_Policy
/= QP
8733 Error_Msg_Sloc
:= Queuing_Policy_Sloc
;
8734 Error_Pragma
("queuing policy incompatible with policy#");
8736 -- Set new policy, but always preserve System_Location since
8737 -- we like the error message with the run time name.
8740 Queuing_Policy
:= QP
;
8742 if Queuing_Policy_Sloc
/= System_Location
then
8743 Queuing_Policy_Sloc
:= Loc
;
8748 ---------------------------
8749 -- Remote_Call_Interface --
8750 ---------------------------
8752 -- pragma Remote_Call_Interface [(library_unit_NAME)];
8754 when Pragma_Remote_Call_Interface
=> Remote_Call_Interface
: declare
8755 Cunit_Node
: Node_Id
;
8756 Cunit_Ent
: Entity_Id
;
8760 Check_Ada_83_Warning
;
8761 Check_Valid_Library_Unit_Pragma
;
8763 if Nkind
(N
) = N_Null_Statement
then
8767 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
8768 K
:= Nkind
(Unit
(Cunit_Node
));
8769 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
8771 if K
= N_Package_Declaration
8772 or else K
= N_Generic_Package_Declaration
8773 or else K
= N_Subprogram_Declaration
8774 or else K
= N_Generic_Subprogram_Declaration
8775 or else (K
= N_Subprogram_Body
8776 and then Acts_As_Spec
(Unit
(Cunit_Node
)))
8781 "pragma% must apply to package or subprogram declaration");
8784 Set_Is_Remote_Call_Interface
(Cunit_Ent
);
8785 end Remote_Call_Interface
;
8791 -- pragma Remote_Types [(library_unit_NAME)];
8793 when Pragma_Remote_Types
=> Remote_Types
: declare
8794 Cunit_Node
: Node_Id
;
8795 Cunit_Ent
: Entity_Id
;
8798 Check_Ada_83_Warning
;
8799 Check_Valid_Library_Unit_Pragma
;
8801 if Nkind
(N
) = N_Null_Statement
then
8805 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
8806 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
8808 if Nkind
(Unit
(Cunit_Node
)) /= N_Package_Declaration
8810 Nkind
(Unit
(Cunit_Node
)) /= N_Generic_Package_Declaration
8813 "pragma% can only apply to a package declaration");
8816 Set_Is_Remote_Types
(Cunit_Ent
);
8823 -- pragma Ravenscar;
8825 when Pragma_Ravenscar
=>
8827 Check_Arg_Count
(0);
8828 Check_Valid_Configuration_Pragma
;
8829 Set_Ravenscar_Profile
(N
);
8831 if Warn_On_Obsolescent_Feature
then
8833 ("pragma Ravenscar is an obsolescent feature?", N
);
8835 ("|use pragma Profile (Ravenscar) instead", N
);
8838 -------------------------
8839 -- Restricted_Run_Time --
8840 -------------------------
8842 -- pragma Restricted_Run_Time;
8844 when Pragma_Restricted_Run_Time
=>
8846 Check_Arg_Count
(0);
8847 Check_Valid_Configuration_Pragma
;
8848 Set_Profile_Restrictions
(Restricted
, N
, Warn
=> False);
8850 if Warn_On_Obsolescent_Feature
then
8852 ("pragma Restricted_Run_Time is an obsolescent feature?", N
);
8854 ("|use pragma Profile (Restricted) instead", N
);
8861 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
8864 -- restriction_IDENTIFIER
8865 -- | restriction_parameter_IDENTIFIER => EXPRESSION
8867 when Pragma_Restrictions
=>
8868 Process_Restrictions_Or_Restriction_Warnings
;
8870 --------------------------
8871 -- Restriction_Warnings --
8872 --------------------------
8874 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
8877 -- restriction_IDENTIFIER
8878 -- | restriction_parameter_IDENTIFIER => EXPRESSION
8880 when Pragma_Restriction_Warnings
=>
8881 Process_Restrictions_Or_Restriction_Warnings
;
8887 -- pragma Reviewable;
8889 when Pragma_Reviewable
=>
8890 Check_Ada_83_Warning
;
8891 Check_Arg_Count
(0);
8897 -- pragma Share_Generic (NAME {, NAME});
8899 when Pragma_Share_Generic
=>
8901 Process_Generic_List
;
8907 -- pragma Shared (LOCAL_NAME);
8909 when Pragma_Shared
=>
8911 Process_Atomic_Shared_Volatile
;
8913 --------------------
8914 -- Shared_Passive --
8915 --------------------
8917 -- pragma Shared_Passive [(library_unit_NAME)];
8919 -- Set the flag Is_Shared_Passive of program unit name entity
8921 when Pragma_Shared_Passive
=> Shared_Passive
: declare
8922 Cunit_Node
: Node_Id
;
8923 Cunit_Ent
: Entity_Id
;
8926 Check_Ada_83_Warning
;
8927 Check_Valid_Library_Unit_Pragma
;
8929 if Nkind
(N
) = N_Null_Statement
then
8933 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
8934 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
8936 if Nkind
(Unit
(Cunit_Node
)) /= N_Package_Declaration
8938 Nkind
(Unit
(Cunit_Node
)) /= N_Generic_Package_Declaration
8941 "pragma% can only apply to a package declaration");
8944 Set_Is_Shared_Passive
(Cunit_Ent
);
8947 ----------------------
8948 -- Source_File_Name --
8949 ----------------------
8951 -- There are five forms for this pragma:
8953 -- pragma Source_File_Name (
8954 -- [UNIT_NAME =>] unit_NAME,
8955 -- BODY_FILE_NAME => STRING_LITERAL
8956 -- [, [INDEX =>] INTEGER_LITERAL]);
8958 -- pragma Source_File_Name (
8959 -- [UNIT_NAME =>] unit_NAME,
8960 -- SPEC_FILE_NAME => STRING_LITERAL
8961 -- [, [INDEX =>] INTEGER_LITERAL]);
8963 -- pragma Source_File_Name (
8964 -- BODY_FILE_NAME => STRING_LITERAL
8965 -- [, DOT_REPLACEMENT => STRING_LITERAL]
8966 -- [, CASING => CASING_SPEC]);
8968 -- pragma Source_File_Name (
8969 -- SPEC_FILE_NAME => STRING_LITERAL
8970 -- [, DOT_REPLACEMENT => STRING_LITERAL]
8971 -- [, CASING => CASING_SPEC]);
8973 -- pragma Source_File_Name (
8974 -- SUBUNIT_FILE_NAME => STRING_LITERAL
8975 -- [, DOT_REPLACEMENT => STRING_LITERAL]
8976 -- [, CASING => CASING_SPEC]);
8978 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
8980 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
8981 -- Source_File_Name (SFN), however their usage is exclusive:
8982 -- SFN can only be used when no project file is used, while
8983 -- SFNP can only be used when a project file is used.
8985 -- No processing here. Processing was completed during parsing,
8986 -- since we need to have file names set as early as possible.
8987 -- Units are loaded well before semantic processing starts.
8989 -- The only processing we defer to this point is the check
8990 -- for correct placement.
8992 when Pragma_Source_File_Name
=>
8994 Check_Valid_Configuration_Pragma
;
8996 ------------------------------
8997 -- Source_File_Name_Project --
8998 ------------------------------
9000 -- See Source_File_Name for syntax
9002 -- No processing here. Processing was completed during parsing,
9003 -- since we need to have file names set as early as possible.
9004 -- Units are loaded well before semantic processing starts.
9006 -- The only processing we defer to this point is the check
9007 -- for correct placement.
9009 when Pragma_Source_File_Name_Project
=>
9011 Check_Valid_Configuration_Pragma
;
9013 -- Check that a pragma Source_File_Name_Project is used only
9014 -- in a configuration pragmas file.
9016 -- Pragmas Source_File_Name_Project should only be generated
9017 -- by the Project Manager in configuration pragmas files.
9019 -- This is really an ugly test. It seems to depend on some
9020 -- accidental and undocumented property. At the very least
9021 -- it needs to be documented, but it would be better to have
9022 -- a clean way of testing if we are in a configuration file???
9024 if Present
(Parent
(N
)) then
9026 ("pragma% can only appear in a configuration pragmas file");
9029 ----------------------
9030 -- Source_Reference --
9031 ----------------------
9033 -- pragma Source_Reference (INTEGER_LITERAL [, STRING_LITERAL]);
9035 -- Nothing to do, all processing completed in Par.Prag, since we
9036 -- need the information for possible parser messages that are output
9038 when Pragma_Source_Reference
=>
9045 -- pragma Storage_Size (EXPRESSION);
9047 when Pragma_Storage_Size
=> Storage_Size
: declare
9048 P
: constant Node_Id
:= Parent
(N
);
9052 Check_No_Identifiers
;
9053 Check_Arg_Count
(1);
9055 -- The expression must be analyzed in the special manner
9056 -- described in "Handling of Default Expressions" in sem.ads.
9058 -- Set In_Default_Expression for per-object case ???
9060 Arg
:= Expression
(Arg1
);
9061 Analyze_Per_Use_Expression
(Arg
, Any_Integer
);
9063 if not Is_Static_Expression
(Arg
) then
9064 Check_Restriction
(Static_Storage_Size
, Arg
);
9067 if Nkind
(P
) /= N_Task_Definition
then
9072 if Has_Storage_Size_Pragma
(P
) then
9073 Error_Pragma
("duplicate pragma% not allowed");
9075 Set_Has_Storage_Size_Pragma
(P
, True);
9078 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
9079 -- ??? exp_ch9 should use this!
9087 -- pragma Storage_Unit (NUMERIC_LITERAL);
9089 -- Only permitted argument is System'Storage_Unit value
9091 when Pragma_Storage_Unit
=>
9092 Check_No_Identifiers
;
9093 Check_Arg_Count
(1);
9094 Check_Arg_Is_Integer_Literal
(Arg1
);
9096 if Intval
(Expression
(Arg1
)) /=
9097 UI_From_Int
(Ttypes
.System_Storage_Unit
)
9099 Error_Msg_Uint_1
:= UI_From_Int
(Ttypes
.System_Storage_Unit
);
9101 ("the only allowed argument for pragma% is ^", Arg1
);
9104 --------------------
9105 -- Stream_Convert --
9106 --------------------
9108 -- pragma Stream_Convert (
9109 -- [Entity =>] type_LOCAL_NAME,
9110 -- [Read =>] function_NAME,
9111 -- [Write =>] function NAME);
9113 when Pragma_Stream_Convert
=> Stream_Convert
: declare
9115 procedure Check_OK_Stream_Convert_Function
(Arg
: Node_Id
);
9116 -- Check that the given argument is the name of a local
9117 -- function of one argument that is not overloaded earlier
9118 -- in the current local scope. A check is also made that the
9119 -- argument is a function with one parameter.
9121 --------------------------------------
9122 -- Check_OK_Stream_Convert_Function --
9123 --------------------------------------
9125 procedure Check_OK_Stream_Convert_Function
(Arg
: Node_Id
) is
9129 Check_Arg_Is_Local_Name
(Arg
);
9130 Ent
:= Entity
(Expression
(Arg
));
9132 if Has_Homonym
(Ent
) then
9134 ("argument for pragma% may not be overloaded", Arg
);
9137 if Ekind
(Ent
) /= E_Function
9138 or else No
(First_Formal
(Ent
))
9139 or else Present
(Next_Formal
(First_Formal
(Ent
)))
9142 ("argument for pragma% must be" &
9143 " function of one argument", Arg
);
9145 end Check_OK_Stream_Convert_Function
;
9147 -- Start of procecessing for Stream_Convert
9151 Check_Arg_Count
(3);
9152 Check_Optional_Identifier
(Arg1
, Name_Entity
);
9153 Check_Optional_Identifier
(Arg2
, Name_Read
);
9154 Check_Optional_Identifier
(Arg3
, Name_Write
);
9155 Check_Arg_Is_Local_Name
(Arg1
);
9156 Check_OK_Stream_Convert_Function
(Arg2
);
9157 Check_OK_Stream_Convert_Function
(Arg3
);
9160 Typ
: constant Entity_Id
:=
9161 Underlying_Type
(Entity
(Expression
(Arg1
)));
9162 Read
: constant Entity_Id
:= Entity
(Expression
(Arg2
));
9163 Write
: constant Entity_Id
:= Entity
(Expression
(Arg3
));
9166 if Etype
(Typ
) = Any_Type
9168 Etype
(Read
) = Any_Type
9170 Etype
(Write
) = Any_Type
9175 Check_First_Subtype
(Arg1
);
9177 if Rep_Item_Too_Early
(Typ
, N
)
9179 Rep_Item_Too_Late
(Typ
, N
)
9184 if Underlying_Type
(Etype
(Read
)) /= Typ
then
9186 ("incorrect return type for function&", Arg2
);
9189 if Underlying_Type
(Etype
(First_Formal
(Write
))) /= Typ
then
9191 ("incorrect parameter type for function&", Arg3
);
9194 if Underlying_Type
(Etype
(First_Formal
(Read
))) /=
9195 Underlying_Type
(Etype
(Write
))
9198 ("result type of & does not match Read parameter type",
9204 -------------------------
9205 -- Style_Checks (GNAT) --
9206 -------------------------
9208 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
9210 -- This is processed by the parser since some of the style
9211 -- checks take place during source scanning and parsing. This
9212 -- means that we don't need to issue error messages here.
9214 when Pragma_Style_Checks
=> Style_Checks
: declare
9215 A
: constant Node_Id
:= Expression
(Arg1
);
9221 Check_No_Identifiers
;
9223 -- Two argument form
9225 if Arg_Count
= 2 then
9226 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
9233 E_Id
:= Expression
(Arg2
);
9236 if not Is_Entity_Name
(E_Id
) then
9238 ("second argument of pragma% must be entity name",
9248 Set_Suppress_Style_Checks
(E
,
9249 (Chars
(Expression
(Arg1
)) = Name_Off
));
9250 exit when No
(Homonym
(E
));
9256 -- One argument form
9259 Check_Arg_Count
(1);
9261 if Nkind
(A
) = N_String_Literal
then
9265 Slen
: constant Natural := Natural (String_Length
(S
));
9266 Options
: String (1 .. Slen
);
9272 C
:= Get_String_Char
(S
, Int
(J
));
9273 exit when not In_Character_Range
(C
);
9274 Options
(J
) := Get_Character
(C
);
9277 Set_Style_Check_Options
(Options
);
9285 elsif Nkind
(A
) = N_Identifier
then
9287 if Chars
(A
) = Name_All_Checks
then
9288 Set_Default_Style_Check_Options
;
9290 elsif Chars
(A
) = Name_On
then
9291 Style_Check
:= True;
9293 elsif Chars
(A
) = Name_Off
then
9294 Style_Check
:= False;
9305 -- pragma Subtitle ([Subtitle =>] STRING_LITERAL);
9307 when Pragma_Subtitle
=>
9309 Check_Arg_Count
(1);
9310 Check_Optional_Identifier
(Arg1
, Name_Subtitle
);
9311 Check_Arg_Is_String_Literal
(Arg1
);
9317 -- pragma Suppress (IDENTIFIER [, [On =>] NAME]);
9319 when Pragma_Suppress
=>
9320 Process_Suppress_Unsuppress
(True);
9326 -- pragma Suppress_All;
9328 -- The only check made here is that the pragma appears in the
9329 -- proper place, i.e. following a compilation unit. If indeed
9330 -- it appears in this context, then the parser has already
9331 -- inserted an equivalent pragma Suppress (All_Checks) to get
9332 -- the required effect.
9334 when Pragma_Suppress_All
=>
9336 Check_Arg_Count
(0);
9338 if Nkind
(Parent
(N
)) /= N_Compilation_Unit_Aux
9339 or else not Is_List_Member
(N
)
9340 or else List_Containing
(N
) /= Pragmas_After
(Parent
(N
))
9343 ("misplaced pragma%, must follow compilation unit");
9346 -------------------------
9347 -- Suppress_Debug_Info --
9348 -------------------------
9350 -- pragma Suppress_Debug_Info ([Entity =>] LOCAL_NAME);
9352 when Pragma_Suppress_Debug_Info
=>
9354 Check_Arg_Count
(1);
9355 Check_Arg_Is_Local_Name
(Arg1
);
9356 Check_Optional_Identifier
(Arg1
, Name_Entity
);
9357 Set_Debug_Info_Off
(Entity
(Get_Pragma_Arg
(Arg1
)));
9359 ----------------------------------
9360 -- Suppress_Exception_Locations --
9361 ----------------------------------
9363 -- pragma Suppress_Exception_Locations;
9365 when Pragma_Suppress_Exception_Locations
=>
9367 Check_Arg_Count
(0);
9368 Check_Valid_Configuration_Pragma
;
9369 Exception_Locations_Suppressed
:= True;
9371 -----------------------------
9372 -- Suppress_Initialization --
9373 -----------------------------
9375 -- pragma Suppress_Initialization ([Entity =>] type_Name);
9377 when Pragma_Suppress_Initialization
=> Suppress_Init
: declare
9383 Check_Arg_Count
(1);
9384 Check_Optional_Identifier
(Arg1
, Name_Entity
);
9385 Check_Arg_Is_Local_Name
(Arg1
);
9387 E_Id
:= Expression
(Arg1
);
9389 if Etype
(E_Id
) = Any_Type
then
9396 if Is_Incomplete_Or_Private_Type
(E
) then
9397 if No
(Full_View
(Base_Type
(E
))) then
9399 ("argument of pragma% cannot be an incomplete type",
9402 Set_Suppress_Init_Proc
(Full_View
(Base_Type
(E
)));
9405 Set_Suppress_Init_Proc
(Base_Type
(E
));
9410 ("pragma% requires argument that is a type name", Arg1
);
9418 -- pragma System_Name (DIRECT_NAME);
9420 -- Syntax check: one argument, which must be the identifier GNAT
9421 -- or the identifier GCC, no other identifiers are acceptable.
9423 when Pragma_System_Name
=>
9424 Check_No_Identifiers
;
9425 Check_Arg_Count
(1);
9426 Check_Arg_Is_One_Of
(Arg1
, Name_Gcc
, Name_Gnat
);
9428 -----------------------------
9429 -- Task_Dispatching_Policy --
9430 -----------------------------
9432 -- pragma Task_Dispatching_Policy (policy_IDENTIFIER);
9434 when Pragma_Task_Dispatching_Policy
=> declare
9438 Check_Ada_83_Warning
;
9439 Check_Arg_Count
(1);
9440 Check_No_Identifiers
;
9441 Check_Arg_Is_Task_Dispatching_Policy
(Arg1
);
9442 Check_Valid_Configuration_Pragma
;
9443 Get_Name_String
(Chars
(Expression
(Arg1
)));
9444 DP
:= Fold_Upper
(Name_Buffer
(1));
9446 if Task_Dispatching_Policy
/= ' '
9447 and then Task_Dispatching_Policy
/= DP
9449 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
9451 ("task dispatching policy incompatible with policy#");
9453 -- Set new policy, but always preserve System_Location since
9454 -- we like the error message with the run time name.
9457 Task_Dispatching_Policy
:= DP
;
9459 if Task_Dispatching_Policy_Sloc
/= System_Location
then
9460 Task_Dispatching_Policy_Sloc
:= Loc
;
9469 -- pragma Task_Info (EXPRESSION);
9471 when Pragma_Task_Info
=> Task_Info
: declare
9472 P
: constant Node_Id
:= Parent
(N
);
9477 if Nkind
(P
) /= N_Task_Definition
then
9478 Error_Pragma
("pragma% must appear in task definition");
9481 Check_No_Identifiers
;
9482 Check_Arg_Count
(1);
9484 Analyze_And_Resolve
(Expression
(Arg1
), RTE
(RE_Task_Info_Type
));
9486 if Etype
(Expression
(Arg1
)) = Any_Type
then
9490 if Has_Task_Info_Pragma
(P
) then
9491 Error_Pragma
("duplicate pragma% not allowed");
9493 Set_Has_Task_Info_Pragma
(P
, True);
9501 -- pragma Task_Name (string_EXPRESSION);
9503 when Pragma_Task_Name
=> Task_Name
: declare
9504 -- pragma Priority (EXPRESSION);
9506 P
: constant Node_Id
:= Parent
(N
);
9510 Check_No_Identifiers
;
9511 Check_Arg_Count
(1);
9513 Arg
:= Expression
(Arg1
);
9514 Analyze_And_Resolve
(Arg
, Standard_String
);
9516 if Nkind
(P
) /= N_Task_Definition
then
9520 if Has_Task_Name_Pragma
(P
) then
9521 Error_Pragma
("duplicate pragma% not allowed");
9523 Set_Has_Task_Name_Pragma
(P
, True);
9524 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
9532 -- pragma Task_Storage (
9533 -- [Task_Type =>] LOCAL_NAME,
9534 -- [Top_Guard =>] static_integer_EXPRESSION);
9536 when Pragma_Task_Storage
=> Task_Storage
: declare
9537 Args
: Args_List
(1 .. 2);
9538 Names
: constant Name_List
(1 .. 2) := (
9542 Task_Type
: Node_Id
renames Args
(1);
9543 Top_Guard
: Node_Id
renames Args
(2);
9549 Gather_Associations
(Names
, Args
);
9551 if No
(Task_Type
) then
9553 ("missing task_type argument for pragma%");
9556 Check_Arg_Is_Local_Name
(Task_Type
);
9558 Ent
:= Entity
(Task_Type
);
9560 if not Is_Task_Type
(Ent
) then
9562 ("argument for pragma% must be task type", Task_Type
);
9565 if No
(Top_Guard
) then
9567 ("pragma% takes two arguments", Task_Type
);
9569 Check_Arg_Is_Static_Expression
(Top_Guard
, Any_Integer
);
9572 Check_First_Subtype
(Task_Type
);
9574 if Rep_Item_Too_Late
(Ent
, N
) then
9583 -- pragma Thread_Body
9584 -- ( [Entity =>] LOCAL_NAME
9585 -- [,[Secondary_Stack_Size =>] static_integer_EXPRESSION]);
9587 when Pragma_Thread_Body
=> Thread_Body
: declare
9594 Check_At_Least_N_Arguments
(1);
9595 Check_At_Most_N_Arguments
(2);
9596 Check_Optional_Identifier
(Arg1
, Name_Entity
);
9597 Check_Arg_Is_Local_Name
(Arg1
);
9599 Id
:= Expression
(Arg1
);
9601 if not Is_Entity_Name
(Id
)
9602 or else not Is_Subprogram
(Entity
(Id
))
9604 Error_Pragma_Arg
("subprogram name required", Arg1
);
9609 -- Go to renamed subprogram if present, since Thread_Body applies
9610 -- to the actual renamed entity, not to the renaming entity.
9612 if Present
(Alias
(E
))
9613 and then Nkind
(Parent
(Declaration_Node
(E
))) =
9614 N_Subprogram_Renaming_Declaration
9619 -- Various error checks
9621 if Nkind
(Parent
(Declaration_Node
(E
))) = N_Subprogram_Body
then
9623 ("pragma% requires separate spec and must come before body");
9625 elsif Rep_Item_Too_Early
(E
, N
)
9627 Rep_Item_Too_Late
(E
, N
)
9631 elsif Is_Thread_Body
(E
) then
9633 ("only one thread body pragma allowed", Arg1
);
9635 elsif Present
(Homonym
(E
))
9636 and then Scope
(Homonym
(E
)) = Current_Scope
9639 ("thread body subprogram must not be overloaded", Arg1
);
9642 Set_Is_Thread_Body
(E
);
9644 -- Deal with secondary stack argument
9646 if Arg_Count
= 2 then
9647 Check_Optional_Identifier
(Arg2
, Name_Secondary_Stack_Size
);
9648 SS
:= Expression
(Arg2
);
9649 Analyze_And_Resolve
(SS
, Any_Integer
);
9657 -- pragma Time_Slice (static_duration_EXPRESSION);
9659 when Pragma_Time_Slice
=> Time_Slice
: declare
9665 Check_Arg_Count
(1);
9666 Check_No_Identifiers
;
9667 Check_In_Main_Program
;
9668 Check_Arg_Is_Static_Expression
(Arg1
, Standard_Duration
);
9670 if not Error_Posted
(Arg1
) then
9672 while Present
(Nod
) loop
9673 if Nkind
(Nod
) = N_Pragma
9674 and then Chars
(Nod
) = Name_Time_Slice
9676 Error_Msg_Name_1
:= Chars
(N
);
9677 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
9684 -- Process only if in main unit
9686 if Get_Source_Unit
(Loc
) = Main_Unit
then
9687 Opt
.Time_Slice_Set
:= True;
9688 Val
:= Expr_Value_R
(Expression
(Arg1
));
9690 if Val
<= Ureal_0
then
9691 Opt
.Time_Slice_Value
:= 0;
9693 elsif Val
> UR_From_Uint
(UI_From_Int
(1000)) then
9694 Opt
.Time_Slice_Value
:= 1_000_000_000
;
9697 Opt
.Time_Slice_Value
:=
9698 UI_To_Int
(UR_To_Uint
(Val
* UI_From_Int
(1_000_000
)));
9707 -- pragma Title (TITLING_OPTION [, TITLING OPTION]);
9709 -- TITLING_OPTION ::=
9710 -- [Title =>] STRING_LITERAL
9711 -- | [Subtitle =>] STRING_LITERAL
9713 when Pragma_Title
=> Title
: declare
9714 Args
: Args_List
(1 .. 2);
9715 Names
: constant Name_List
(1 .. 2) := (
9721 Gather_Associations
(Names
, Args
);
9723 for J
in 1 .. 2 loop
9724 if Present
(Args
(J
)) then
9725 Check_Arg_Is_String_Literal
(Args
(J
));
9730 ---------------------
9731 -- Unchecked_Union --
9732 ---------------------
9734 -- pragma Unchecked_Union (first_subtype_LOCAL_NAME)
9736 when Pragma_Unchecked_Union
=> Unchecked_Union
: declare
9737 Assoc
: constant Node_Id
:= Arg1
;
9738 Type_Id
: constant Node_Id
:= Expression
(Assoc
);
9749 Check_No_Identifiers
;
9750 Check_Arg_Count
(1);
9751 Check_Arg_Is_Local_Name
(Arg1
);
9753 Find_Type
(Type_Id
);
9754 Typ
:= Entity
(Type_Id
);
9757 or else Rep_Item_Too_Early
(Typ
, N
)
9761 Typ
:= Underlying_Type
(Typ
);
9764 if Rep_Item_Too_Late
(Typ
, N
) then
9768 Check_First_Subtype
(Arg1
);
9770 -- Note remaining cases are references to a type in the current
9771 -- declarative part. If we find an error, we post the error on
9772 -- the relevant type declaration at an appropriate point.
9774 if not Is_Record_Type
(Typ
) then
9775 Error_Msg_N
("Unchecked_Union must be record type", Typ
);
9778 elsif Is_Tagged_Type
(Typ
) then
9779 Error_Msg_N
("Unchecked_Union must not be tagged", Typ
);
9782 elsif Is_Limited_Type
(Typ
) then
9784 ("Unchecked_Union must not be limited record type", Typ
);
9785 Explain_Limited_Type
(Typ
, Typ
);
9789 if not Has_Discriminants
(Typ
) then
9791 ("Unchecked_Union must have one discriminant", Typ
);
9795 Discr
:= First_Discriminant
(Typ
);
9797 if Present
(Next_Discriminant
(Discr
)) then
9799 ("Unchecked_Union must have exactly one discriminant",
9800 Next_Discriminant
(Discr
));
9804 if No
(Discriminant_Default_Value
(Discr
)) then
9806 ("Unchecked_Union discriminant must have default value",
9810 Tdef
:= Type_Definition
(Declaration_Node
(Typ
));
9811 Clist
:= Component_List
(Tdef
);
9813 Comp
:= First
(Component_Items
(Clist
));
9814 while Present
(Comp
) loop
9816 Check_Component
(Comp
);
9821 if No
(Clist
) or else No
(Variant_Part
(Clist
)) then
9823 ("Unchecked_Union must have variant part",
9828 Vpart
:= Variant_Part
(Clist
);
9829 Variant
:= First
(Variants
(Vpart
));
9830 while Present
(Variant
) loop
9832 Check_Variant
(Variant
);
9838 Set_Is_Unchecked_Union
(Typ
, True);
9839 Set_Convention
(Typ
, Convention_C
);
9841 Set_Has_Unchecked_Union
(Base_Type
(Typ
), True);
9842 Set_Is_Unchecked_Union
(Base_Type
(Typ
), True);
9843 end Unchecked_Union
;
9845 ------------------------
9846 -- Unimplemented_Unit --
9847 ------------------------
9849 -- pragma Unimplemented_Unit;
9851 -- Note: this only gives an error if we are generating code,
9852 -- or if we are in a generic library unit (where the pragma
9853 -- appears in the body, not in the spec).
9855 when Pragma_Unimplemented_Unit
=> Unimplemented_Unit
: declare
9856 Cunitent
: constant Entity_Id
:=
9857 Cunit_Entity
(Get_Source_Unit
(Loc
));
9858 Ent_Kind
: constant Entity_Kind
:=
9863 Check_Arg_Count
(0);
9865 if Operating_Mode
= Generate_Code
9866 or else Ent_Kind
= E_Generic_Function
9867 or else Ent_Kind
= E_Generic_Procedure
9868 or else Ent_Kind
= E_Generic_Package
9870 Get_Name_String
(Chars
(Cunitent
));
9871 Set_Casing
(Mixed_Case
);
9872 Write_Str
(Name_Buffer
(1 .. Name_Len
));
9873 Write_Str
(" is not implemented");
9875 raise Unrecoverable_Error
;
9877 end Unimplemented_Unit
;
9879 --------------------
9880 -- Universal_Data --
9881 --------------------
9883 -- pragma Universal_Data [(library_unit_NAME)];
9885 when Pragma_Universal_Data
=>
9888 -- If this is a configuration pragma, then set the universal
9889 -- addressing option, otherwise confirm that the pragma
9890 -- satisfies the requirements of library unit pragma placement
9891 -- and leave it to the GNAAMP back end to detect the pragma
9892 -- (avoids transitive setting of the option due to withed units).
9894 if Is_Configuration_Pragma
then
9895 Universal_Addressing_On_AAMP
:= True;
9897 Check_Valid_Library_Unit_Pragma
;
9900 if not AAMP_On_Target
then
9901 Error_Pragma
("?pragma% ignored (applies only to AAMP)");
9908 -- pragma Unreferenced (local_Name {, local_Name});
9910 when Pragma_Unreferenced
=> Unreferenced
: declare
9913 Arg_Ent
: Entity_Id
;
9917 Check_At_Least_N_Arguments
(1);
9921 while Present
(Arg_Node
) loop
9922 Check_No_Identifier
(Arg_Node
);
9924 -- Note that the analyze call done by Check_Arg_Is_Local_Name
9925 -- will in fact generate a reference, so that the entity will
9926 -- have a reference, which will inhibit any warnings about it
9927 -- not being referenced, and also properly show up in the ali
9928 -- file as a reference. But this reference is recorded before
9929 -- the Has_Pragma_Unreferenced flag is set, so that no warning
9930 -- is generated for this reference.
9932 Check_Arg_Is_Local_Name
(Arg_Node
);
9933 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
9935 if Is_Entity_Name
(Arg_Expr
) then
9936 Arg_Ent
:= Entity
(Arg_Expr
);
9938 -- If the entity is overloaded, the pragma applies to the
9939 -- most recent overloading, as documented. In this case,
9940 -- name resolution does not generate a reference, so it
9941 -- must be done here explicitly.
9943 if Is_Overloaded
(Arg_Expr
) then
9944 Generate_Reference
(Arg_Ent
, N
);
9947 Set_Has_Pragma_Unreferenced
(Arg_Ent
);
9954 ------------------------------
9955 -- Unreserve_All_Interrupts --
9956 ------------------------------
9958 -- pragma Unreserve_All_Interrupts;
9960 when Pragma_Unreserve_All_Interrupts
=>
9962 Check_Arg_Count
(0);
9964 if In_Extended_Main_Code_Unit
(Main_Unit_Entity
) then
9965 Unreserve_All_Interrupts
:= True;
9972 -- pragma Unsuppress (IDENTIFIER [, [On =>] NAME]);
9974 when Pragma_Unsuppress
=>
9976 Process_Suppress_Unsuppress
(False);
9982 -- pragma Use_VADS_Size;
9984 when Pragma_Use_VADS_Size
=>
9986 Check_Arg_Count
(0);
9987 Check_Valid_Configuration_Pragma
;
9988 Use_VADS_Size
:= True;
9990 ---------------------
9991 -- Validity_Checks --
9992 ---------------------
9994 -- pragma Validity_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
9996 when Pragma_Validity_Checks
=> Validity_Checks
: declare
9997 A
: constant Node_Id
:= Expression
(Arg1
);
10003 Check_Arg_Count
(1);
10004 Check_No_Identifiers
;
10006 if Nkind
(A
) = N_String_Literal
then
10010 Slen
: constant Natural := Natural (String_Length
(S
));
10011 Options
: String (1 .. Slen
);
10017 C
:= Get_String_Char
(S
, Int
(J
));
10018 exit when not In_Character_Range
(C
);
10019 Options
(J
) := Get_Character
(C
);
10022 Set_Validity_Check_Options
(Options
);
10030 elsif Nkind
(A
) = N_Identifier
then
10032 if Chars
(A
) = Name_All_Checks
then
10033 Set_Validity_Check_Options
("a");
10035 elsif Chars
(A
) = Name_On
then
10036 Validity_Checks_On
:= True;
10038 elsif Chars
(A
) = Name_Off
then
10039 Validity_Checks_On
:= False;
10043 end Validity_Checks
;
10049 -- pragma Volatile (LOCAL_NAME);
10051 when Pragma_Volatile
=>
10052 Process_Atomic_Shared_Volatile
;
10054 -------------------------
10055 -- Volatile_Components --
10056 -------------------------
10058 -- pragma Volatile_Components (array_LOCAL_NAME);
10060 -- Volatile is handled by the same circuit as Atomic_Components
10066 -- pragma Warnings (On | Off, [LOCAL_NAME])
10068 when Pragma_Warnings
=> Warnings
: begin
10070 Check_At_Least_N_Arguments
(1);
10071 Check_At_Most_N_Arguments
(2);
10072 Check_No_Identifiers
;
10074 -- One argument case was processed by parser in Par.Prag
10076 if Arg_Count
/= 1 then
10077 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
10078 Check_Arg_Count
(2);
10085 E_Id
:= Expression
(Arg2
);
10088 -- In the expansion of an inlined body, a reference to
10089 -- the formal may be wrapped in a conversion if the actual
10090 -- is a conversion. Retrieve the real entity name.
10092 if (In_Instance_Body
10093 or else In_Inlined_Body
)
10094 and then Nkind
(E_Id
) = N_Unchecked_Type_Conversion
10096 E_Id
:= Expression
(E_Id
);
10099 if not Is_Entity_Name
(E_Id
) then
10101 ("second argument of pragma% must be entity name",
10105 E
:= Entity
(E_Id
);
10111 Set_Warnings_Off
(E
,
10112 (Chars
(Expression
(Arg1
)) = Name_Off
));
10114 if Is_Enumeration_Type
(E
) then
10116 Lit
: Entity_Id
:= First_Literal
(E
);
10119 while Present
(Lit
) loop
10120 Set_Warnings_Off
(Lit
);
10121 Next_Literal
(Lit
);
10126 exit when No
(Homonym
(E
));
10134 -------------------
10135 -- Weak_External --
10136 -------------------
10138 -- pragma Weak_External ([Entity =>] LOCAL_NAME);
10140 when Pragma_Weak_External
=> Weak_External
: declare
10145 Check_Arg_Count
(1);
10146 Check_Optional_Identifier
(Arg1
, Name_Entity
);
10147 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
10148 Ent
:= Entity
(Expression
(Arg1
));
10150 if Rep_Item_Too_Early
(Ent
, N
) then
10153 Ent
:= Underlying_Type
(Ent
);
10156 -- The only processing required is to link this item on to the
10157 -- list of rep items for the given entity. This is accomplished
10158 -- by the call to Rep_Item_Too_Late (when no error is detected
10159 -- and False is returned).
10161 if Rep_Item_Too_Late
(Ent
, N
) then
10164 Set_Has_Gigi_Rep_Item
(Ent
);
10168 --------------------
10169 -- Unknown_Pragma --
10170 --------------------
10172 -- Should be impossible, since the case of an unknown pragma is
10173 -- separately processed before the case statement is entered.
10175 when Unknown_Pragma
=>
10176 raise Program_Error
;
10180 when Pragma_Exit
=> null;
10181 end Analyze_Pragma
;
10183 ---------------------------------
10184 -- Delay_Config_Pragma_Analyze --
10185 ---------------------------------
10187 function Delay_Config_Pragma_Analyze
(N
: Node_Id
) return Boolean is
10189 return Chars
(N
) = Name_Interrupt_State
;
10190 end Delay_Config_Pragma_Analyze
;
10192 -------------------------
10193 -- Get_Base_Subprogram --
10194 -------------------------
10196 function Get_Base_Subprogram
(Def_Id
: Entity_Id
) return Entity_Id
is
10197 Result
: Entity_Id
;
10202 -- Follow subprogram renaming chain
10204 while Is_Subprogram
(Result
)
10206 (Is_Generic_Instance
(Result
)
10207 or else Nkind
(Parent
(Declaration_Node
(Result
))) =
10208 N_Subprogram_Renaming_Declaration
)
10209 and then Present
(Alias
(Result
))
10211 Result
:= Alias
(Result
);
10215 end Get_Base_Subprogram
;
10217 -----------------------------
10218 -- Is_Config_Static_String --
10219 -----------------------------
10221 function Is_Config_Static_String
(Arg
: Node_Id
) return Boolean is
10223 function Add_Config_Static_String
(Arg
: Node_Id
) return Boolean;
10224 -- This is an internal recursive function that is just like the
10225 -- outer function except that it adds the string to the name buffer
10226 -- rather than placing the string in the name buffer.
10228 ------------------------------
10229 -- Add_Config_Static_String --
10230 ------------------------------
10232 function Add_Config_Static_String
(Arg
: Node_Id
) return Boolean is
10239 if Nkind
(N
) = N_Op_Concat
then
10240 if Add_Config_Static_String
(Left_Opnd
(N
)) then
10241 N
:= Right_Opnd
(N
);
10247 if Nkind
(N
) /= N_String_Literal
then
10248 Error_Msg_N
("string literal expected for pragma argument", N
);
10252 for J
in 1 .. String_Length
(Strval
(N
)) loop
10253 C
:= Get_String_Char
(Strval
(N
), J
);
10255 if not In_Character_Range
(C
) then
10257 ("string literal contains invalid wide character",
10258 Sloc
(N
) + 1 + Source_Ptr
(J
));
10262 Add_Char_To_Name_Buffer
(Get_Character
(C
));
10267 end Add_Config_Static_String
;
10269 -- Start of prorcessing for Is_Config_Static_String
10274 return Add_Config_Static_String
(Arg
);
10275 end Is_Config_Static_String
;
10277 -----------------------------------------
10278 -- Is_Non_Significant_Pragma_Reference --
10279 -----------------------------------------
10281 -- This function makes use of the following static table which indicates
10282 -- whether a given pragma is significant. A value of -1 in this table
10283 -- indicates that the reference is significant. A value of zero indicates
10284 -- than appearence as any argument is insignificant, a positive value
10285 -- indicates that appearence in that parameter position is significant.
10287 Sig_Flags
: constant array (Pragma_Id
) of Int
:=
10289 (Pragma_AST_Entry
=> -1,
10290 Pragma_Abort_Defer
=> -1,
10291 Pragma_Ada_83
=> -1,
10292 Pragma_Ada_95
=> -1,
10293 Pragma_Ada_05
=> -1,
10294 Pragma_All_Calls_Remote
=> -1,
10295 Pragma_Annotate
=> -1,
10296 Pragma_Assert
=> -1,
10297 Pragma_Asynchronous
=> -1,
10298 Pragma_Atomic
=> 0,
10299 Pragma_Atomic_Components
=> 0,
10300 Pragma_Attach_Handler
=> -1,
10301 Pragma_CPP_Class
=> 0,
10302 Pragma_CPP_Constructor
=> 0,
10303 Pragma_CPP_Virtual
=> 0,
10304 Pragma_CPP_Vtable
=> 0,
10305 Pragma_C_Pass_By_Copy
=> 0,
10306 Pragma_Comment
=> 0,
10307 Pragma_Common_Object
=> -1,
10308 Pragma_Compile_Time_Warning
=> -1,
10309 Pragma_Complex_Representation
=> 0,
10310 Pragma_Component_Alignment
=> -1,
10311 Pragma_Controlled
=> 0,
10312 Pragma_Convention
=> 0,
10313 Pragma_Convention_Identifier
=> 0,
10314 Pragma_Debug
=> -1,
10315 Pragma_Detect_Blocking
=> -1,
10316 Pragma_Discard_Names
=> 0,
10317 Pragma_Elaborate
=> -1,
10318 Pragma_Elaborate_All
=> -1,
10319 Pragma_Elaborate_Body
=> -1,
10320 Pragma_Elaboration_Checks
=> -1,
10321 Pragma_Eliminate
=> -1,
10322 Pragma_Explicit_Overriding
=> -1,
10323 Pragma_Export
=> -1,
10324 Pragma_Export_Exception
=> -1,
10325 Pragma_Export_Function
=> -1,
10326 Pragma_Export_Object
=> -1,
10327 Pragma_Export_Procedure
=> -1,
10328 Pragma_Export_Value
=> -1,
10329 Pragma_Export_Valued_Procedure
=> -1,
10330 Pragma_Extend_System
=> -1,
10331 Pragma_Extensions_Allowed
=> -1,
10332 Pragma_External
=> -1,
10333 Pragma_External_Name_Casing
=> -1,
10334 Pragma_Finalize_Storage_Only
=> 0,
10335 Pragma_Float_Representation
=> 0,
10336 Pragma_Ident
=> -1,
10337 Pragma_Import
=> +2,
10338 Pragma_Import_Exception
=> 0,
10339 Pragma_Import_Function
=> 0,
10340 Pragma_Import_Object
=> 0,
10341 Pragma_Import_Procedure
=> 0,
10342 Pragma_Import_Valued_Procedure
=> 0,
10343 Pragma_Initialize_Scalars
=> -1,
10344 Pragma_Inline
=> 0,
10345 Pragma_Inline_Always
=> 0,
10346 Pragma_Inline_Generic
=> 0,
10347 Pragma_Inspection_Point
=> -1,
10348 Pragma_Interface
=> +2,
10349 Pragma_Interface_Name
=> +2,
10350 Pragma_Interrupt_Handler
=> -1,
10351 Pragma_Interrupt_Priority
=> -1,
10352 Pragma_Interrupt_State
=> -1,
10353 Pragma_Java_Constructor
=> -1,
10354 Pragma_Java_Interface
=> -1,
10355 Pragma_Keep_Names
=> 0,
10356 Pragma_License
=> -1,
10357 Pragma_Link_With
=> -1,
10358 Pragma_Linker_Alias
=> -1,
10359 Pragma_Linker_Options
=> -1,
10360 Pragma_Linker_Section
=> -1,
10362 Pragma_Locking_Policy
=> -1,
10363 Pragma_Long_Float
=> -1,
10364 Pragma_Machine_Attribute
=> -1,
10366 Pragma_Main_Storage
=> -1,
10367 Pragma_Memory_Size
=> -1,
10368 Pragma_No_Return
=> 0,
10369 Pragma_No_Run_Time
=> -1,
10370 Pragma_No_Strict_Aliasing
=> -1,
10371 Pragma_Normalize_Scalars
=> -1,
10372 Pragma_Obsolescent
=> 0,
10373 Pragma_Optimize
=> -1,
10374 Pragma_Optional_Overriding
=> -1,
10375 Pragma_Overriding
=> -1,
10378 Pragma_Passive
=> -1,
10379 Pragma_Polling
=> -1,
10380 Pragma_Persistent_Data
=> -1,
10381 Pragma_Persistent_Object
=> -1,
10382 Pragma_Preelaborate
=> -1,
10383 Pragma_Priority
=> -1,
10384 Pragma_Profile
=> 0,
10385 Pragma_Profile_Warnings
=> 0,
10386 Pragma_Propagate_Exceptions
=> -1,
10387 Pragma_Psect_Object
=> -1,
10389 Pragma_Pure_Function
=> 0,
10390 Pragma_Queuing_Policy
=> -1,
10391 Pragma_Ravenscar
=> -1,
10392 Pragma_Remote_Call_Interface
=> -1,
10393 Pragma_Remote_Types
=> -1,
10394 Pragma_Restricted_Run_Time
=> -1,
10395 Pragma_Restriction_Warnings
=> -1,
10396 Pragma_Restrictions
=> -1,
10397 Pragma_Reviewable
=> -1,
10398 Pragma_Share_Generic
=> -1,
10399 Pragma_Shared
=> -1,
10400 Pragma_Shared_Passive
=> -1,
10401 Pragma_Source_File_Name
=> -1,
10402 Pragma_Source_File_Name_Project
=> -1,
10403 Pragma_Source_Reference
=> -1,
10404 Pragma_Storage_Size
=> -1,
10405 Pragma_Storage_Unit
=> -1,
10406 Pragma_Stream_Convert
=> -1,
10407 Pragma_Style_Checks
=> -1,
10408 Pragma_Subtitle
=> -1,
10409 Pragma_Suppress
=> 0,
10410 Pragma_Suppress_Exception_Locations
=> 0,
10411 Pragma_Suppress_All
=> -1,
10412 Pragma_Suppress_Debug_Info
=> 0,
10413 Pragma_Suppress_Initialization
=> 0,
10414 Pragma_System_Name
=> -1,
10415 Pragma_Task_Dispatching_Policy
=> -1,
10416 Pragma_Task_Info
=> -1,
10417 Pragma_Task_Name
=> -1,
10418 Pragma_Task_Storage
=> 0,
10419 Pragma_Thread_Body
=> +2,
10420 Pragma_Time_Slice
=> -1,
10421 Pragma_Title
=> -1,
10422 Pragma_Unchecked_Union
=> 0,
10423 Pragma_Unimplemented_Unit
=> -1,
10424 Pragma_Universal_Data
=> -1,
10425 Pragma_Unreferenced
=> -1,
10426 Pragma_Unreserve_All_Interrupts
=> -1,
10427 Pragma_Unsuppress
=> 0,
10428 Pragma_Use_VADS_Size
=> -1,
10429 Pragma_Validity_Checks
=> -1,
10430 Pragma_Volatile
=> 0,
10431 Pragma_Volatile_Components
=> 0,
10432 Pragma_Warnings
=> -1,
10433 Pragma_Weak_External
=> 0,
10434 Unknown_Pragma
=> 0);
10436 function Is_Non_Significant_Pragma_Reference
(N
: Node_Id
) return Boolean is
10444 if Nkind
(P
) /= N_Pragma_Argument_Association
then
10448 C
:= Sig_Flags
(Get_Pragma_Id
(Chars
(Parent
(P
))));
10458 A
:= First
(Pragma_Argument_Associations
(Parent
(P
)));
10459 for J
in 1 .. C
- 1 loop
10470 end Is_Non_Significant_Pragma_Reference
;
10472 ------------------------------
10473 -- Is_Pragma_String_Literal --
10474 ------------------------------
10476 -- This function returns true if the corresponding pragma argument is
10477 -- a static string expression. These are the only cases in which string
10478 -- literals can appear as pragma arguments. We also allow a string
10479 -- literal as the first argument to pragma Assert (although it will
10480 -- of course always generate a type error).
10482 function Is_Pragma_String_Literal
(Par
: Node_Id
) return Boolean is
10483 Pragn
: constant Node_Id
:= Parent
(Par
);
10484 Assoc
: constant List_Id
:= Pragma_Argument_Associations
(Pragn
);
10485 Pname
: constant Name_Id
:= Chars
(Pragn
);
10491 N
:= First
(Assoc
);
10498 if Pname
= Name_Assert
then
10501 elsif Pname
= Name_Export
then
10504 elsif Pname
= Name_Ident
then
10507 elsif Pname
= Name_Import
then
10510 elsif Pname
= Name_Interface_Name
then
10513 elsif Pname
= Name_Linker_Alias
then
10516 elsif Pname
= Name_Linker_Section
then
10519 elsif Pname
= Name_Machine_Attribute
then
10522 elsif Pname
= Name_Source_File_Name
then
10525 elsif Pname
= Name_Source_Reference
then
10528 elsif Pname
= Name_Title
then
10531 elsif Pname
= Name_Subtitle
then
10537 end Is_Pragma_String_Literal
;
10539 --------------------------------------
10540 -- Process_Compilation_Unit_Pragmas --
10541 --------------------------------------
10543 procedure Process_Compilation_Unit_Pragmas
(N
: Node_Id
) is
10545 -- A special check for pragma Suppress_All. This is a strange DEC
10546 -- pragma, strange because it comes at the end of the unit. If we
10547 -- have a pragma Suppress_All in the Pragmas_After of the current
10548 -- unit, then we insert a pragma Suppress (All_Checks) at the start
10549 -- of the context clause to ensure the correct processing.
10552 PA
: constant List_Id
:= Pragmas_After
(Aux_Decls_Node
(N
));
10556 if Present
(PA
) then
10558 while Present
(P
) loop
10559 if Chars
(P
) = Name_Suppress_All
then
10560 Prepend_To
(Context_Items
(N
),
10561 Make_Pragma
(Sloc
(P
),
10562 Chars
=> Name_Suppress
,
10563 Pragma_Argument_Associations
=> New_List
(
10564 Make_Pragma_Argument_Association
(Sloc
(P
),
10566 Make_Identifier
(Sloc
(P
),
10567 Chars
=> Name_All_Checks
)))));
10575 end Process_Compilation_Unit_Pragmas
;
10577 --------------------------------
10578 -- Set_Encoded_Interface_Name --
10579 --------------------------------
10581 procedure Set_Encoded_Interface_Name
(E
: Entity_Id
; S
: Node_Id
) is
10582 Str
: constant String_Id
:= Strval
(S
);
10583 Len
: constant Int
:= String_Length
(Str
);
10588 Hex
: constant array (0 .. 15) of Character := "0123456789abcdef";
10591 -- Stores encoded value of character code CC. The encoding we
10592 -- use an underscore followed by four lower case hex digits.
10594 procedure Encode
is
10596 Store_String_Char
(Get_Char_Code
('_'));
10598 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 12))));
10600 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 8 and 16#
0F#
))));
10602 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 4 and 16#
0F#
))));
10604 (Get_Char_Code
(Hex
(Integer (CC
and 16#
0F#
))));
10607 -- Start of processing for Set_Encoded_Interface_Name
10610 -- If first character is asterisk, this is a link name, and we
10611 -- leave it completely unmodified. We also ignore null strings
10612 -- (the latter case happens only in error cases) and no encoding
10613 -- should occur for Java interface names.
10616 or else Get_String_Char
(Str
, 1) = Get_Char_Code
('*')
10619 Set_Interface_Name
(E
, S
);
10624 CC
:= Get_String_Char
(Str
, J
);
10626 exit when not In_Character_Range
(CC
);
10628 C
:= Get_Character
(CC
);
10630 exit when C
/= '_' and then C
/= '$'
10631 and then C
not in '0' .. '9'
10632 and then C
not in 'a' .. 'z'
10633 and then C
not in 'A' .. 'Z';
10636 Set_Interface_Name
(E
, S
);
10644 -- Here we need to encode. The encoding we use as follows:
10645 -- three underscores + four hex digits (lower case)
10649 for J
in 1 .. String_Length
(Str
) loop
10650 CC
:= Get_String_Char
(Str
, J
);
10652 if not In_Character_Range
(CC
) then
10655 C
:= Get_Character
(CC
);
10657 if C
= '_' or else C
= '$'
10658 or else C
in '0' .. '9'
10659 or else C
in 'a' .. 'z'
10660 or else C
in 'A' .. 'Z'
10662 Store_String_Char
(CC
);
10669 Set_Interface_Name
(E
,
10670 Make_String_Literal
(Sloc
(S
),
10671 Strval
=> End_String
));
10673 end Set_Encoded_Interface_Name
;
10675 -------------------
10676 -- Set_Unit_Name --
10677 -------------------
10679 procedure Set_Unit_Name
(N
: Node_Id
; With_Item
: Node_Id
) is
10684 if Nkind
(N
) = N_Identifier
10685 and then Nkind
(With_Item
) = N_Identifier
10687 Set_Entity
(N
, Entity
(With_Item
));
10689 elsif Nkind
(N
) = N_Selected_Component
then
10690 Change_Selected_Component_To_Expanded_Name
(N
);
10691 Set_Entity
(N
, Entity
(With_Item
));
10692 Set_Entity
(Selector_Name
(N
), Entity
(N
));
10694 Pref
:= Prefix
(N
);
10695 Scop
:= Scope
(Entity
(N
));
10697 while Nkind
(Pref
) = N_Selected_Component
loop
10698 Change_Selected_Component_To_Expanded_Name
(Pref
);
10699 Set_Entity
(Selector_Name
(Pref
), Scop
);
10700 Set_Entity
(Pref
, Scop
);
10701 Pref
:= Prefix
(Pref
);
10702 Scop
:= Scope
(Scop
);
10705 Set_Entity
(Pref
, Scop
);