1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2008, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- This unit contains the semantic processing for all pragmas, both language
27 -- and implementation defined. For most pragmas, the parser only does the
28 -- most basic job of checking the syntax, so Sem_Prag also contains the code
29 -- to complete the syntax checks. Certain pragmas are handled partially or
30 -- completely by the parser (see Par.Prag for further details).
32 with Atree
; use Atree
;
33 with Casing
; use Casing
;
34 with Checks
; use Checks
;
35 with Csets
; use Csets
;
36 with Debug
; use Debug
;
37 with Einfo
; use Einfo
;
38 with Errout
; use Errout
;
39 with Exp_Dist
; use Exp_Dist
;
41 with Lib
.Writ
; use Lib
.Writ
;
42 with Lib
.Xref
; use Lib
.Xref
;
43 with Namet
.Sp
; use Namet
.Sp
;
44 with Nlists
; use Nlists
;
45 with Nmake
; use Nmake
;
47 with Output
; use Output
;
48 with Restrict
; use Restrict
;
49 with Rident
; use Rident
;
50 with Rtsfind
; use Rtsfind
;
52 with Sem_Aux
; use Sem_Aux
;
53 with Sem_Ch3
; use Sem_Ch3
;
54 with Sem_Ch6
; use Sem_Ch6
;
55 with Sem_Ch8
; use Sem_Ch8
;
56 with Sem_Ch13
; use Sem_Ch13
;
57 with Sem_Dist
; use Sem_Dist
;
58 with Sem_Elim
; use Sem_Elim
;
59 with Sem_Eval
; use Sem_Eval
;
60 with Sem_Intr
; use Sem_Intr
;
61 with Sem_Mech
; use Sem_Mech
;
62 with Sem_Res
; use Sem_Res
;
63 with Sem_Type
; use Sem_Type
;
64 with Sem_Util
; use Sem_Util
;
65 with Sem_VFpt
; use Sem_VFpt
;
66 with Sem_Warn
; use Sem_Warn
;
67 with Stand
; use Stand
;
68 with Sinfo
; use Sinfo
;
69 with Sinfo
.CN
; use Sinfo
.CN
;
70 with Sinput
; use Sinput
;
71 with Snames
; use Snames
;
72 with Stringt
; use Stringt
;
73 with Stylesw
; use Stylesw
;
75 with Targparm
; use Targparm
;
76 with Tbuild
; use Tbuild
;
78 with Uintp
; use Uintp
;
79 with Uname
; use Uname
;
80 with Urealp
; use Urealp
;
81 with Validsw
; use Validsw
;
83 package body Sem_Prag
is
85 ----------------------------------------------
86 -- Common Handling of Import-Export Pragmas --
87 ----------------------------------------------
89 -- In the following section, a number of Import_xxx and Export_xxx
90 -- pragmas are defined by GNAT. These are compatible with the DEC
91 -- pragmas of the same name, and all have the following common
92 -- form and processing:
95 -- [Internal =>] LOCAL_NAME
96 -- [, [External =>] EXTERNAL_SYMBOL]
97 -- [, other optional parameters ]);
100 -- [Internal =>] LOCAL_NAME
101 -- [, [External =>] EXTERNAL_SYMBOL]
102 -- [, other optional parameters ]);
104 -- EXTERNAL_SYMBOL ::=
106 -- | static_string_EXPRESSION
108 -- The internal LOCAL_NAME designates the entity that is imported or
109 -- exported, and must refer to an entity in the current declarative
110 -- part (as required by the rules for LOCAL_NAME).
112 -- The external linker name is designated by the External parameter
113 -- if given, or the Internal parameter if not (if there is no External
114 -- parameter, the External parameter is a copy of the Internal name).
116 -- If the External parameter is given as a string, then this string
117 -- is treated as an external name (exactly as though it had been given
118 -- as an External_Name parameter for a normal Import pragma).
120 -- If the External parameter is given as an identifier (or there is no
121 -- External parameter, so that the Internal identifier is used), then
122 -- the external name is the characters of the identifier, translated
123 -- to all upper case letters for OpenVMS versions of GNAT, and to all
124 -- lower case letters for all other versions
126 -- Note: the external name specified or implied by any of these special
127 -- Import_xxx or Export_xxx pragmas override an external or link name
128 -- specified in a previous Import or Export pragma.
130 -- Note: these and all other DEC-compatible GNAT pragmas allow full
131 -- use of named notation, following the standard rules for subprogram
132 -- calls, i.e. parameters can be given in any order if named notation
133 -- is used, and positional and named notation can be mixed, subject to
134 -- the rule that all positional parameters must appear first.
136 -- Note: All these pragmas are implemented exactly following the DEC
137 -- design and implementation and are intended to be fully compatible
138 -- with the use of these pragmas in the DEC Ada compiler.
140 --------------------------------------------
141 -- Checking for Duplicated External Names --
142 --------------------------------------------
144 -- It is suspicious if two separate Export pragmas use the same external
145 -- name. The following table is used to diagnose this situation so that
146 -- an appropriate warning can be issued.
148 -- The Node_Id stored is for the N_String_Literal node created to
149 -- hold the value of the external name. The Sloc of this node is
150 -- used to cross-reference the location of the duplication.
152 package Externals
is new Table
.Table
(
153 Table_Component_Type
=> Node_Id
,
154 Table_Index_Type
=> Int
,
155 Table_Low_Bound
=> 0,
156 Table_Initial
=> 100,
157 Table_Increment
=> 100,
158 Table_Name
=> "Name_Externals");
160 -------------------------------------
161 -- Local Subprograms and Variables --
162 -------------------------------------
164 function Adjust_External_Name_Case
(N
: Node_Id
) return Node_Id
;
165 -- This routine is used for possible casing adjustment of an explicit
166 -- external name supplied as a string literal (the node N), according
167 -- to the casing requirement of Opt.External_Name_Casing. If this is
168 -- set to As_Is, then the string literal is returned unchanged, but if
169 -- it is set to Uppercase or Lowercase, then a new string literal with
170 -- appropriate casing is constructed.
172 function Get_Base_Subprogram
(Def_Id
: Entity_Id
) return Entity_Id
;
173 -- If Def_Id refers to a renamed subprogram, then the base subprogram
174 -- (the original one, following the renaming chain) is returned.
175 -- Otherwise the entity is returned unchanged. Should be in Einfo???
177 function Get_Pragma_Arg
(Arg
: Node_Id
) return Node_Id
;
178 -- All the routines that check pragma arguments take either a pragma
179 -- argument association (in which case the expression of the argument
180 -- association is checked), or the expression directly. The function
181 -- Get_Pragma_Arg is a utility used to deal with these two cases. If Arg
182 -- is a pragma argument association node, then its expression is returned,
183 -- otherwise Arg is returned unchanged.
186 -- This is a dummy function called by the processing for pragma Reviewable.
187 -- It is there for assisting front end debugging. By placing a Reviewable
188 -- pragma in the source program, a breakpoint on rv catches this place in
189 -- the source, allowing convenient stepping to the point of interest.
191 procedure Set_Unit_Name
(N
: Node_Id
; With_Item
: Node_Id
);
192 -- Place semantic information on the argument of an Elaborate or
193 -- Elaborate_All pragma. Entity name for unit and its parents is
194 -- taken from item in previous with_clause that mentions the unit.
196 -------------------------------
197 -- Adjust_External_Name_Case --
198 -------------------------------
200 function Adjust_External_Name_Case
(N
: Node_Id
) return Node_Id
is
204 -- Adjust case of literal if required
206 if Opt
.External_Name_Exp_Casing
= As_Is
then
210 -- Copy existing string
216 for J
in 1 .. String_Length
(Strval
(N
)) loop
217 CC
:= Get_String_Char
(Strval
(N
), J
);
219 if Opt
.External_Name_Exp_Casing
= Uppercase
220 and then CC
>= Get_Char_Code
('a')
221 and then CC
<= Get_Char_Code
('z')
223 Store_String_Char
(CC
- 32);
225 elsif Opt
.External_Name_Exp_Casing
= Lowercase
226 and then CC
>= Get_Char_Code
('A')
227 and then CC
<= Get_Char_Code
('Z')
229 Store_String_Char
(CC
+ 32);
232 Store_String_Char
(CC
);
237 Make_String_Literal
(Sloc
(N
),
238 Strval
=> End_String
);
240 end Adjust_External_Name_Case
;
242 ------------------------------
243 -- Analyze_PPC_In_Decl_Part --
244 ------------------------------
246 procedure Analyze_PPC_In_Decl_Part
(N
: Node_Id
; S
: Entity_Id
) is
247 Arg1
: constant Node_Id
:=
248 First
(Pragma_Argument_Associations
(N
));
249 Arg2
: constant Node_Id
:= Next
(Arg1
);
252 -- Install formals and push subprogram spec onto scope stack
253 -- so that we can see the formals from the pragma.
258 -- Preanalyze the boolean expression, we treat this as a
259 -- spec expression (i.e. similar to a default expression).
261 Preanalyze_Spec_Expression
262 (Get_Pragma_Arg
(Arg1
), Standard_Boolean
);
264 -- If there is a message argument, analyze it the same way
266 if Present
(Arg2
) then
267 Preanalyze_Spec_Expression
268 (Get_Pragma_Arg
(Arg2
), Standard_String
);
271 -- Remove the subprogram from the scope stack now that the
272 -- pre-analysis of the precondition/postcondition is done.
275 end Analyze_PPC_In_Decl_Part
;
281 procedure Analyze_Pragma
(N
: Node_Id
) is
282 Loc
: constant Source_Ptr
:= Sloc
(N
);
283 Pname
: constant Name_Id
:= Pragma_Name
(N
);
286 Pragma_Exit
: exception;
287 -- This exception is used to exit pragma processing completely. It
288 -- is used when an error is detected, and no further processing is
289 -- required. It is also used if an earlier error has left the tree
290 -- in a state where the pragma should not be processed.
293 -- Number of pragma argument associations
299 -- First four pragma arguments (pragma argument association nodes,
300 -- or Empty if the corresponding argument does not exist).
302 type Name_List
is array (Natural range <>) of Name_Id
;
303 type Args_List
is array (Natural range <>) of Node_Id
;
304 -- Types used for arguments to Check_Arg_Order and Gather_Associations
306 procedure Ada_2005_Pragma
;
307 -- Called for pragmas defined in Ada 2005, that are not in Ada 95. In
308 -- Ada 95 mode, these are implementation defined pragmas, so should be
309 -- caught by the No_Implementation_Pragmas restriction
311 procedure Check_Ada_83_Warning
;
312 -- Issues a warning message for the current pragma if operating in Ada
313 -- 83 mode (used for language pragmas that are not a standard part of
314 -- Ada 83). This procedure does not raise Error_Pragma. Also notes use
317 procedure Check_Arg_Count
(Required
: Nat
);
318 -- Check argument count for pragma is equal to given parameter.
319 -- If not, then issue an error message and raise Pragma_Exit.
321 -- Note: all routines whose name is Check_Arg_Is_xxx take an
322 -- argument Arg which can either be a pragma argument association,
323 -- in which case the check is applied to the expression of the
324 -- association or an expression directly.
326 procedure Check_Arg_Is_External_Name
(Arg
: Node_Id
);
327 -- Check that an argument has the right form for an EXTERNAL_NAME
328 -- parameter of an extended import/export pragma. The rule is that
329 -- the name must be an identifier or string literal (in Ada 83 mode)
330 -- or a static string expression (in Ada 95 mode).
332 procedure Check_Arg_Is_Identifier
(Arg
: Node_Id
);
333 -- Check the specified argument Arg to make sure that it is an
334 -- identifier. If not give error and raise Pragma_Exit.
336 procedure Check_Arg_Is_Integer_Literal
(Arg
: Node_Id
);
337 -- Check the specified argument Arg to make sure that it is an
338 -- integer literal. If not give error and raise Pragma_Exit.
340 procedure Check_Arg_Is_Library_Level_Local_Name
(Arg
: Node_Id
);
341 -- Check the specified argument Arg to make sure that it has the
342 -- proper syntactic form for a local name and meets the semantic
343 -- requirements for a local name. The local name is analyzed as
344 -- part of the processing for this call. In addition, the local
345 -- name is required to represent an entity at the library level.
347 procedure Check_Arg_Is_Local_Name
(Arg
: Node_Id
);
348 -- Check the specified argument Arg to make sure that it has the
349 -- proper syntactic form for a local name and meets the semantic
350 -- requirements for a local name. The local name is analyzed as
351 -- part of the processing for this call.
353 procedure Check_Arg_Is_Locking_Policy
(Arg
: Node_Id
);
354 -- Check the specified argument Arg to make sure that it is a valid
355 -- locking policy name. If not give error and raise Pragma_Exit.
357 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
: Name_Id
);
358 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
, N3
: Name_Id
);
359 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
, N3
, N4
: Name_Id
);
360 -- Check the specified argument Arg to make sure that it is an
361 -- identifier whose name matches either N1 or N2 (or N3 if present).
362 -- If not then give error and raise Pragma_Exit.
364 procedure Check_Arg_Is_Queuing_Policy
(Arg
: Node_Id
);
365 -- Check the specified argument Arg to make sure that it is a valid
366 -- queuing policy name. If not give error and raise Pragma_Exit.
368 procedure Check_Arg_Is_Static_Expression
371 -- Check the specified argument Arg to make sure that it is a static
372 -- expression of the given type (i.e. it will be analyzed and resolved
373 -- using this type, which can be any valid argument to Resolve, e.g.
374 -- Any_Integer is OK). If not, given error and raise Pragma_Exit.
376 procedure Check_Arg_Is_String_Literal
(Arg
: Node_Id
);
377 -- Check the specified argument Arg to make sure that it is a
378 -- string literal. If not give error and raise Pragma_Exit
380 procedure Check_Arg_Is_Task_Dispatching_Policy
(Arg
: Node_Id
);
381 -- Check the specified argument Arg to make sure that it is a valid
382 -- valid task dispatching policy name. If not give error and raise
385 procedure Check_Arg_Order
(Names
: Name_List
);
386 -- Checks for an instance of two arguments with identifiers for the
387 -- current pragma which are not in the sequence indicated by Names,
388 -- and if so, generates a fatal message about bad order of arguments.
390 procedure Check_At_Least_N_Arguments
(N
: Nat
);
391 -- Check there are at least N arguments present
393 procedure Check_At_Most_N_Arguments
(N
: Nat
);
394 -- Check there are no more than N arguments present
396 procedure Check_Component
(Comp
: Node_Id
);
397 -- Examine Unchecked_Union component for correct use of per-object
398 -- constrained subtypes, and for restrictions on finalizable components.
400 procedure Check_Duplicated_Export_Name
(Nam
: Node_Id
);
401 -- Nam is an N_String_Literal node containing the external name set
402 -- by an Import or Export pragma (or extended Import or Export pragma).
403 -- This procedure checks for possible duplications if this is the
404 -- export case, and if found, issues an appropriate error message.
406 procedure Check_First_Subtype
(Arg
: Node_Id
);
407 -- Checks that Arg, whose expression is an entity name referencing
408 -- a subtype, does not reference a type that is not a first subtype.
410 procedure Check_In_Main_Program
;
411 -- Common checks for pragmas that appear within a main program
412 -- (Priority, Main_Storage, Time_Slice, Relative_Deadline).
414 procedure Check_Interrupt_Or_Attach_Handler
;
415 -- Common processing for first argument of pragma Interrupt_Handler
416 -- or pragma Attach_Handler.
418 procedure Check_Is_In_Decl_Part_Or_Package_Spec
;
419 -- Check that pragma appears in a declarative part, or in a package
420 -- specification, i.e. that it does not occur in a statement sequence
423 procedure Check_No_Identifier
(Arg
: Node_Id
);
424 -- Checks that the given argument does not have an identifier. If
425 -- an identifier is present, then an error message is issued, and
426 -- Pragma_Exit is raised.
428 procedure Check_No_Identifiers
;
429 -- Checks that none of the arguments to the pragma has an identifier.
430 -- If any argument has an identifier, then an error message is issued,
431 -- and Pragma_Exit is raised.
433 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: Name_Id
);
434 -- Checks if the given argument has an identifier, and if so, requires
435 -- it to match the given identifier name. If there is a non-matching
436 -- identifier, then an error message is given and Error_Pragmas raised.
438 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: String);
439 -- Checks if the given argument has an identifier, and if so, requires
440 -- it to match the given identifier name. If there is a non-matching
441 -- identifier, then an error message is given and Error_Pragmas raised.
442 -- In this version of the procedure, the identifier name is given as
443 -- a string with lower case letters.
445 procedure Check_Precondition_Postcondition
(In_Body
: out Boolean);
446 -- Called to process a precondition or postcondition pragma. There are
449 -- The pragma appears after a subprogram spec
451 -- If the corresponding check is not enabled, the pragma is analyzed
452 -- but otherwise ignored and control returns with In_Body set False.
454 -- If the check is enabled, then the first step is to analyze the
455 -- pragma, but this is skipped if the subprogram spec appears within
456 -- a package specification (because this is the case where we delay
457 -- analysis till the end of the spec). Then (whether or not it was
458 -- analyzed), the pragma is chained to the subprogram in question
459 -- (using Spec_PPC_List and Next_Pragma) and control returns to the
460 -- caller with In_Body set False.
462 -- The pragma appears at the start of subprogram body declarations
464 -- In this case an immediate return to the caller is made with
465 -- In_Body set True, and the pragma is NOT analyzed.
467 -- In all other cases, an error message for bad placement is given
469 procedure Check_Static_Constraint
(Constr
: Node_Id
);
470 -- Constr is a constraint from an N_Subtype_Indication node from a
471 -- component constraint in an Unchecked_Union type. This routine checks
472 -- that the constraint is static as required by the restrictions for
475 procedure Check_Valid_Configuration_Pragma
;
476 -- Legality checks for placement of a configuration pragma
478 procedure Check_Valid_Library_Unit_Pragma
;
479 -- Legality checks for library unit pragmas. A special case arises for
480 -- pragmas in generic instances that come from copies of the original
481 -- library unit pragmas in the generic templates. In the case of other
482 -- than library level instantiations these can appear in contexts which
483 -- would normally be invalid (they only apply to the original template
484 -- and to library level instantiations), and they are simply ignored,
485 -- which is implemented by rewriting them as null statements.
487 procedure Check_Variant
(Variant
: Node_Id
);
488 -- Check Unchecked_Union variant for lack of nested variants and
489 -- presence of at least one component.
491 procedure Error_Pragma
(Msg
: String);
492 pragma No_Return
(Error_Pragma
);
493 -- Outputs error message for current pragma. The message contains a %
494 -- that will be replaced with the pragma name, and the flag is placed
495 -- on the pragma itself. Pragma_Exit is then raised.
497 procedure Error_Pragma_Arg
(Msg
: String; Arg
: Node_Id
);
498 pragma No_Return
(Error_Pragma_Arg
);
499 -- Outputs error message for current pragma. The message may contain
500 -- a % that will be replaced with the pragma name. The parameter Arg
501 -- may either be a pragma argument association, in which case the flag
502 -- is placed on the expression of this association, or an expression,
503 -- in which case the flag is placed directly on the expression. The
504 -- message is placed using Error_Msg_N, so the message may also contain
505 -- an & insertion character which will reference the given Arg value.
506 -- After placing the message, Pragma_Exit is raised.
508 procedure Error_Pragma_Arg
(Msg1
, Msg2
: String; Arg
: Node_Id
);
509 pragma No_Return
(Error_Pragma_Arg
);
510 -- Similar to above form of Error_Pragma_Arg except that two messages
511 -- are provided, the second is a continuation comment starting with \.
513 procedure Error_Pragma_Arg_Ident
(Msg
: String; Arg
: Node_Id
);
514 pragma No_Return
(Error_Pragma_Arg_Ident
);
515 -- Outputs error message for current pragma. The message may contain
516 -- a % that will be replaced with the pragma name. The parameter Arg
517 -- must be a pragma argument association with a non-empty identifier
518 -- (i.e. its Chars field must be set), and the error message is placed
519 -- on the identifier. The message is placed using Error_Msg_N so
520 -- the message may also contain an & insertion character which will
521 -- reference the identifier. After placing the message, Pragma_Exit
524 procedure Error_Pragma_Ref
(Msg
: String; Ref
: Entity_Id
);
525 pragma No_Return
(Error_Pragma_Ref
);
526 -- Outputs error message for current pragma. The message may contain
527 -- a % that will be replaced with the pragma name. The parameter Ref
528 -- must be an entity whose name can be referenced by & and sloc by #.
529 -- After placing the message, Pragma_Exit is raised.
531 function Find_Lib_Unit_Name
return Entity_Id
;
532 -- Used for a library unit pragma to find the entity to which the
533 -- library unit pragma applies, returns the entity found.
535 procedure Find_Program_Unit_Name
(Id
: Node_Id
);
536 -- If the pragma is a compilation unit pragma, the id must denote the
537 -- compilation unit in the same compilation, and the pragma must appear
538 -- in the list of preceding or trailing pragmas. If it is a program
539 -- unit pragma that is not a compilation unit pragma, then the
540 -- identifier must be visible.
542 function Find_Unique_Parameterless_Procedure
544 Arg
: Node_Id
) return Entity_Id
;
545 -- Used for a procedure pragma to find the unique parameterless
546 -- procedure identified by Name, returns it if it exists, otherwise
547 -- errors out and uses Arg as the pragma argument for the message.
549 procedure Gather_Associations
551 Args
: out Args_List
);
552 -- This procedure is used to gather the arguments for a pragma that
553 -- permits arbitrary ordering of parameters using the normal rules
554 -- for named and positional parameters. The Names argument is a list
555 -- of Name_Id values that corresponds to the allowed pragma argument
556 -- association identifiers in order. The result returned in Args is
557 -- a list of corresponding expressions that are the pragma arguments.
558 -- Note that this is a list of expressions, not of pragma argument
559 -- associations (Gather_Associations has completely checked all the
560 -- optional identifiers when it returns). An entry in Args is Empty
561 -- on return if the corresponding argument is not present.
563 procedure GNAT_Pragma
;
564 -- Called for all GNAT defined pragmas to check the relevant restriction
565 -- (No_Implementation_Pragmas).
567 function Is_Before_First_Decl
568 (Pragma_Node
: Node_Id
;
569 Decls
: List_Id
) return Boolean;
570 -- Return True if Pragma_Node is before the first declarative item in
571 -- Decls where Decls is the list of declarative items.
573 function Is_Configuration_Pragma
return Boolean;
574 -- Determines if the placement of the current pragma is appropriate
575 -- for a configuration pragma.
577 function Is_In_Context_Clause
return Boolean;
578 -- Returns True if pragma appears within the context clause of a unit,
579 -- and False for any other placement (does not generate any messages).
581 function Is_Static_String_Expression
(Arg
: Node_Id
) return Boolean;
582 -- Analyzes the argument, and determines if it is a static string
583 -- expression, returns True if so, False if non-static or not String.
585 procedure Pragma_Misplaced
;
586 -- Issue fatal error message for misplaced pragma
588 procedure Process_Atomic_Shared_Volatile
;
589 -- Common processing for pragmas Atomic, Shared, Volatile. Note that
590 -- Shared is an obsolete Ada 83 pragma, treated as being identical
591 -- in effect to pragma Atomic.
593 procedure Process_Compile_Time_Warning_Or_Error
;
594 -- Common processing for Compile_Time_Error and Compile_Time_Warning
596 procedure Process_Convention
(C
: out Convention_Id
; E
: out Entity_Id
);
597 -- Common processing for Convention, Interface, Import and Export.
598 -- Checks first two arguments of pragma, and sets the appropriate
599 -- convention value in the specified entity or entities. On return
600 -- C is the convention, E is the referenced entity.
602 procedure Process_Extended_Import_Export_Exception_Pragma
603 (Arg_Internal
: Node_Id
;
604 Arg_External
: Node_Id
;
607 -- Common processing for the pragmas Import/Export_Exception.
608 -- The three arguments correspond to the three named parameters of
609 -- the pragma. An argument is empty if the corresponding parameter
610 -- is not present in the pragma.
612 procedure Process_Extended_Import_Export_Object_Pragma
613 (Arg_Internal
: Node_Id
;
614 Arg_External
: Node_Id
;
616 -- Common processing for the pragmas Import/Export_Object.
617 -- The three arguments correspond to the three named parameters
618 -- of the pragmas. An argument is empty if the corresponding
619 -- parameter is not present in the pragma.
621 procedure Process_Extended_Import_Export_Internal_Arg
622 (Arg_Internal
: Node_Id
:= Empty
);
623 -- Common processing for all extended Import and Export pragmas. The
624 -- argument is the pragma parameter for the Internal argument. If
625 -- Arg_Internal is empty or inappropriate, an error message is posted.
626 -- Otherwise, on normal return, the Entity_Field of Arg_Internal is
627 -- set to identify the referenced entity.
629 procedure Process_Extended_Import_Export_Subprogram_Pragma
630 (Arg_Internal
: Node_Id
;
631 Arg_External
: Node_Id
;
632 Arg_Parameter_Types
: Node_Id
;
633 Arg_Result_Type
: Node_Id
:= Empty
;
634 Arg_Mechanism
: Node_Id
;
635 Arg_Result_Mechanism
: Node_Id
:= Empty
;
636 Arg_First_Optional_Parameter
: Node_Id
:= Empty
);
637 -- Common processing for all extended Import and Export pragmas
638 -- applying to subprograms. The caller omits any arguments that do
639 -- not apply to the pragma in question (for example, Arg_Result_Type
640 -- can be non-Empty only in the Import_Function and Export_Function
641 -- cases). The argument names correspond to the allowed pragma
642 -- association identifiers.
644 procedure Process_Generic_List
;
645 -- Common processing for Share_Generic and Inline_Generic
647 procedure Process_Import_Or_Interface
;
648 -- Common processing for Import of Interface
650 procedure Process_Inline
(Active
: Boolean);
651 -- Common processing for Inline and Inline_Always. The parameter
652 -- indicates if the inline pragma is active, i.e. if it should
653 -- actually cause inlining to occur.
655 procedure Process_Interface_Name
656 (Subprogram_Def
: Entity_Id
;
659 -- Given the last two arguments of pragma Import, pragma Export, or
660 -- pragma Interface_Name, performs validity checks and sets the
661 -- Interface_Name field of the given subprogram entity to the
662 -- appropriate external or link name, depending on the arguments
663 -- given. Ext_Arg is always present, but Link_Arg may be missing.
664 -- Note that Ext_Arg may represent the Link_Name if Link_Arg is
665 -- missing, and appropriate named notation is used for Ext_Arg.
666 -- If neither Ext_Arg nor Link_Arg is present, the interface name
667 -- is set to the default from the subprogram name.
669 procedure Process_Interrupt_Or_Attach_Handler
;
670 -- Common processing for Interrupt and Attach_Handler pragmas
672 procedure Process_Restrictions_Or_Restriction_Warnings
(Warn
: Boolean);
673 -- Common processing for Restrictions and Restriction_Warnings pragmas.
674 -- Warn is True for Restriction_Warnings, or for Restrictions if the
675 -- flag Treat_Restrictions_As_Warnings is set, and False if this flag
676 -- is not set in the Restrictions case.
678 procedure Process_Suppress_Unsuppress
(Suppress_Case
: Boolean);
679 -- Common processing for Suppress and Unsuppress. The boolean parameter
680 -- Suppress_Case is True for the Suppress case, and False for the
683 procedure Set_Exported
(E
: Entity_Id
; Arg
: Node_Id
);
684 -- This procedure sets the Is_Exported flag for the given entity,
685 -- checking that the entity was not previously imported. Arg is
686 -- the argument that specified the entity. A check is also made
687 -- for exporting inappropriate entities.
689 procedure Set_Extended_Import_Export_External_Name
690 (Internal_Ent
: Entity_Id
;
691 Arg_External
: Node_Id
);
692 -- Common processing for all extended import export pragmas. The first
693 -- argument, Internal_Ent, is the internal entity, which has already
694 -- been checked for validity by the caller. Arg_External is from the
695 -- Import or Export pragma, and may be null if no External parameter
696 -- was present. If Arg_External is present and is a non-null string
697 -- (a null string is treated as the default), then the Interface_Name
698 -- field of Internal_Ent is set appropriately.
700 procedure Set_Imported
(E
: Entity_Id
);
701 -- This procedure sets the Is_Imported flag for the given entity,
702 -- checking that it is not previously exported or imported.
704 procedure Set_Mechanism_Value
(Ent
: Entity_Id
; Mech_Name
: Node_Id
);
705 -- Mech is a parameter passing mechanism (see Import_Function syntax
706 -- for MECHANISM_NAME). This routine checks that the mechanism argument
707 -- has the right form, and if not issues an error message. If the
708 -- argument has the right form then the Mechanism field of Ent is
709 -- set appropriately.
711 procedure Set_Ravenscar_Profile
(N
: Node_Id
);
712 -- Activate the set of configuration pragmas and restrictions that
713 -- make up the Ravenscar Profile. N is the corresponding pragma
714 -- node, which is used for error messages on any constructs
715 -- that violate the profile.
717 ---------------------
718 -- Ada_2005_Pragma --
719 ---------------------
721 procedure Ada_2005_Pragma
is
723 if Ada_Version
<= Ada_95
then
724 Check_Restriction
(No_Implementation_Pragmas
, N
);
728 --------------------------
729 -- Check_Ada_83_Warning --
730 --------------------------
732 procedure Check_Ada_83_Warning
is
734 if Ada_Version
= Ada_83
and then Comes_From_Source
(N
) then
735 Error_Msg_N
("(Ada 83) pragma& is non-standard?", N
);
737 end Check_Ada_83_Warning
;
739 ---------------------
740 -- Check_Arg_Count --
741 ---------------------
743 procedure Check_Arg_Count
(Required
: Nat
) is
745 if Arg_Count
/= Required
then
746 Error_Pragma
("wrong number of arguments for pragma%");
750 --------------------------------
751 -- Check_Arg_Is_External_Name --
752 --------------------------------
754 procedure Check_Arg_Is_External_Name
(Arg
: Node_Id
) is
755 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
758 if Nkind
(Argx
) = N_Identifier
then
762 Analyze_And_Resolve
(Argx
, Standard_String
);
764 if Is_OK_Static_Expression
(Argx
) then
767 elsif Etype
(Argx
) = Any_Type
then
770 -- An interesting special case, if we have a string literal and
771 -- we are in Ada 83 mode, then we allow it even though it will
772 -- not be flagged as static. This allows expected Ada 83 mode
773 -- use of external names which are string literals, even though
774 -- technically these are not static in Ada 83.
776 elsif Ada_Version
= Ada_83
777 and then Nkind
(Argx
) = N_String_Literal
781 -- Static expression that raises Constraint_Error. This has
782 -- already been flagged, so just exit from pragma processing.
784 elsif Is_Static_Expression
(Argx
) then
787 -- Here we have a real error (non-static expression)
790 Error_Msg_Name_1
:= Pname
;
792 ("argument for pragma% must be a identifier or " &
793 "static string expression!", Argx
);
797 end Check_Arg_Is_External_Name
;
799 -----------------------------
800 -- Check_Arg_Is_Identifier --
801 -----------------------------
803 procedure Check_Arg_Is_Identifier
(Arg
: Node_Id
) is
804 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
806 if Nkind
(Argx
) /= N_Identifier
then
808 ("argument for pragma% must be identifier", Argx
);
810 end Check_Arg_Is_Identifier
;
812 ----------------------------------
813 -- Check_Arg_Is_Integer_Literal --
814 ----------------------------------
816 procedure Check_Arg_Is_Integer_Literal
(Arg
: Node_Id
) is
817 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
819 if Nkind
(Argx
) /= N_Integer_Literal
then
821 ("argument for pragma% must be integer literal", Argx
);
823 end Check_Arg_Is_Integer_Literal
;
825 -------------------------------------------
826 -- Check_Arg_Is_Library_Level_Local_Name --
827 -------------------------------------------
831 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
832 -- | library_unit_NAME
834 procedure Check_Arg_Is_Library_Level_Local_Name
(Arg
: Node_Id
) is
836 Check_Arg_Is_Local_Name
(Arg
);
838 if not Is_Library_Level_Entity
(Entity
(Expression
(Arg
)))
839 and then Comes_From_Source
(N
)
842 ("argument for pragma% must be library level entity", Arg
);
844 end Check_Arg_Is_Library_Level_Local_Name
;
846 -----------------------------
847 -- Check_Arg_Is_Local_Name --
848 -----------------------------
852 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
853 -- | library_unit_NAME
855 procedure Check_Arg_Is_Local_Name
(Arg
: Node_Id
) is
856 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
861 if Nkind
(Argx
) not in N_Direct_Name
862 and then (Nkind
(Argx
) /= N_Attribute_Reference
863 or else Present
(Expressions
(Argx
))
864 or else Nkind
(Prefix
(Argx
)) /= N_Identifier
)
865 and then (not Is_Entity_Name
(Argx
)
866 or else not Is_Compilation_Unit
(Entity
(Argx
)))
868 Error_Pragma_Arg
("argument for pragma% must be local name", Argx
);
871 if Is_Entity_Name
(Argx
)
872 and then Scope
(Entity
(Argx
)) /= Current_Scope
875 ("pragma% argument must be in same declarative part", Arg
);
877 end Check_Arg_Is_Local_Name
;
879 ---------------------------------
880 -- Check_Arg_Is_Locking_Policy --
881 ---------------------------------
883 procedure Check_Arg_Is_Locking_Policy
(Arg
: Node_Id
) is
884 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
887 Check_Arg_Is_Identifier
(Argx
);
889 if not Is_Locking_Policy_Name
(Chars
(Argx
)) then
891 ("& is not a valid locking policy name", Argx
);
893 end Check_Arg_Is_Locking_Policy
;
895 -------------------------
896 -- Check_Arg_Is_One_Of --
897 -------------------------
899 procedure Check_Arg_Is_One_Of
(Arg
: Node_Id
; N1
, N2
: Name_Id
) is
900 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
903 Check_Arg_Is_Identifier
(Argx
);
905 if Chars
(Argx
) /= N1
and then Chars
(Argx
) /= N2
then
906 Error_Msg_Name_2
:= N1
;
907 Error_Msg_Name_3
:= N2
;
908 Error_Pragma_Arg
("argument for pragma% must be% or%", Argx
);
910 end Check_Arg_Is_One_Of
;
912 procedure Check_Arg_Is_One_Of
914 N1
, N2
, N3
: Name_Id
)
916 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
919 Check_Arg_Is_Identifier
(Argx
);
921 if Chars
(Argx
) /= N1
922 and then Chars
(Argx
) /= N2
923 and then Chars
(Argx
) /= N3
925 Error_Pragma_Arg
("invalid argument for pragma%", Argx
);
927 end Check_Arg_Is_One_Of
;
929 procedure Check_Arg_Is_One_Of
931 N1
, N2
, N3
, N4
: Name_Id
)
933 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
936 Check_Arg_Is_Identifier
(Argx
);
938 if Chars
(Argx
) /= N1
939 and then Chars
(Argx
) /= N2
940 and then Chars
(Argx
) /= N3
941 and then Chars
(Argx
) /= N4
943 Error_Pragma_Arg
("invalid argument for pragma%", Argx
);
945 end Check_Arg_Is_One_Of
;
947 ---------------------------------
948 -- Check_Arg_Is_Queuing_Policy --
949 ---------------------------------
951 procedure Check_Arg_Is_Queuing_Policy
(Arg
: Node_Id
) is
952 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
955 Check_Arg_Is_Identifier
(Argx
);
957 if not Is_Queuing_Policy_Name
(Chars
(Argx
)) then
959 ("& is not a valid queuing policy name", Argx
);
961 end Check_Arg_Is_Queuing_Policy
;
963 ------------------------------------
964 -- Check_Arg_Is_Static_Expression --
965 ------------------------------------
967 procedure Check_Arg_Is_Static_Expression
971 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
974 Analyze_And_Resolve
(Argx
, Typ
);
976 if Is_OK_Static_Expression
(Argx
) then
979 elsif Etype
(Argx
) = Any_Type
then
982 -- An interesting special case, if we have a string literal and
983 -- we are in Ada 83 mode, then we allow it even though it will
984 -- not be flagged as static. This allows the use of Ada 95
985 -- pragmas like Import in Ada 83 mode. They will of course be
986 -- flagged with warnings as usual, but will not cause errors.
988 elsif Ada_Version
= Ada_83
989 and then Nkind
(Argx
) = N_String_Literal
993 -- Static expression that raises Constraint_Error. This has
994 -- already been flagged, so just exit from pragma processing.
996 elsif Is_Static_Expression
(Argx
) then
999 -- Finally, we have a real error
1002 Error_Msg_Name_1
:= Pname
;
1003 Flag_Non_Static_Expr
1004 ("argument for pragma% must be a static expression!", Argx
);
1007 end Check_Arg_Is_Static_Expression
;
1009 ---------------------------------
1010 -- Check_Arg_Is_String_Literal --
1011 ---------------------------------
1013 procedure Check_Arg_Is_String_Literal
(Arg
: Node_Id
) is
1014 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
1016 if Nkind
(Argx
) /= N_String_Literal
then
1018 ("argument for pragma% must be string literal", Argx
);
1020 end Check_Arg_Is_String_Literal
;
1022 ------------------------------------------
1023 -- Check_Arg_Is_Task_Dispatching_Policy --
1024 ------------------------------------------
1026 procedure Check_Arg_Is_Task_Dispatching_Policy
(Arg
: Node_Id
) is
1027 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
1030 Check_Arg_Is_Identifier
(Argx
);
1032 if not Is_Task_Dispatching_Policy_Name
(Chars
(Argx
)) then
1034 ("& is not a valid task dispatching policy name", Argx
);
1036 end Check_Arg_Is_Task_Dispatching_Policy
;
1038 ---------------------
1039 -- Check_Arg_Order --
1040 ---------------------
1042 procedure Check_Arg_Order
(Names
: Name_List
) is
1045 Highest_So_Far
: Natural := 0;
1046 -- Highest index in Names seen do far
1050 for J
in 1 .. Arg_Count
loop
1051 if Chars
(Arg
) /= No_Name
then
1052 for K
in Names
'Range loop
1053 if Chars
(Arg
) = Names
(K
) then
1054 if K
< Highest_So_Far
then
1055 Error_Msg_Name_1
:= Pname
;
1057 ("parameters out of order for pragma%", Arg
);
1058 Error_Msg_Name_1
:= Names
(K
);
1059 Error_Msg_Name_2
:= Names
(Highest_So_Far
);
1060 Error_Msg_N
("\% must appear before %", Arg
);
1064 Highest_So_Far
:= K
;
1072 end Check_Arg_Order
;
1074 --------------------------------
1075 -- Check_At_Least_N_Arguments --
1076 --------------------------------
1078 procedure Check_At_Least_N_Arguments
(N
: Nat
) is
1080 if Arg_Count
< N
then
1081 Error_Pragma
("too few arguments for pragma%");
1083 end Check_At_Least_N_Arguments
;
1085 -------------------------------
1086 -- Check_At_Most_N_Arguments --
1087 -------------------------------
1089 procedure Check_At_Most_N_Arguments
(N
: Nat
) is
1092 if Arg_Count
> N
then
1094 for J
in 1 .. N
loop
1096 Error_Pragma_Arg
("too many arguments for pragma%", Arg
);
1099 end Check_At_Most_N_Arguments
;
1101 ---------------------
1102 -- Check_Component --
1103 ---------------------
1105 procedure Check_Component
(Comp
: Node_Id
) is
1107 if Nkind
(Comp
) = N_Component_Declaration
then
1109 Sindic
: constant Node_Id
:=
1110 Subtype_Indication
(Component_Definition
(Comp
));
1111 Typ
: constant Entity_Id
:=
1112 Etype
(Defining_Identifier
(Comp
));
1114 if Nkind
(Sindic
) = N_Subtype_Indication
then
1116 -- Ada 2005 (AI-216): If a component subtype is subject to
1117 -- a per-object constraint, then the component type shall
1118 -- be an Unchecked_Union.
1120 if Has_Per_Object_Constraint
(Defining_Identifier
(Comp
))
1122 not Is_Unchecked_Union
(Etype
(Subtype_Mark
(Sindic
)))
1124 Error_Msg_N
("component subtype subject to per-object" &
1125 " constraint must be an Unchecked_Union", Comp
);
1129 if Is_Controlled
(Typ
) then
1131 ("component of unchecked union cannot be controlled", Comp
);
1133 elsif Has_Task
(Typ
) then
1135 ("component of unchecked union cannot have tasks", Comp
);
1139 end Check_Component
;
1141 ----------------------------------
1142 -- Check_Duplicated_Export_Name --
1143 ----------------------------------
1145 procedure Check_Duplicated_Export_Name
(Nam
: Node_Id
) is
1146 String_Val
: constant String_Id
:= Strval
(Nam
);
1149 -- We are only interested in the export case, and in the case of
1150 -- generics, it is the instance, not the template, that is the
1151 -- problem (the template will generate a warning in any case).
1153 if not Inside_A_Generic
1154 and then (Prag_Id
= Pragma_Export
1156 Prag_Id
= Pragma_Export_Procedure
1158 Prag_Id
= Pragma_Export_Valued_Procedure
1160 Prag_Id
= Pragma_Export_Function
)
1162 for J
in Externals
.First
.. Externals
.Last
loop
1163 if String_Equal
(String_Val
, Strval
(Externals
.Table
(J
))) then
1164 Error_Msg_Sloc
:= Sloc
(Externals
.Table
(J
));
1165 Error_Msg_N
("external name duplicates name given#", Nam
);
1170 Externals
.Append
(Nam
);
1172 end Check_Duplicated_Export_Name
;
1174 -------------------------
1175 -- Check_First_Subtype --
1176 -------------------------
1178 procedure Check_First_Subtype
(Arg
: Node_Id
) is
1179 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
1181 if not Is_First_Subtype
(Entity
(Argx
)) then
1183 ("pragma% cannot apply to subtype", Argx
);
1185 end Check_First_Subtype
;
1187 ---------------------------
1188 -- Check_In_Main_Program --
1189 ---------------------------
1191 procedure Check_In_Main_Program
is
1192 P
: constant Node_Id
:= Parent
(N
);
1195 -- Must be at in subprogram body
1197 if Nkind
(P
) /= N_Subprogram_Body
then
1198 Error_Pragma
("% pragma allowed only in subprogram");
1200 -- Otherwise warn if obviously not main program
1202 elsif Present
(Parameter_Specifications
(Specification
(P
)))
1203 or else not Is_Compilation_Unit
(Defining_Entity
(P
))
1205 Error_Msg_Name_1
:= Pname
;
1207 ("?pragma% is only effective in main program", N
);
1209 end Check_In_Main_Program
;
1211 ---------------------------------------
1212 -- Check_Interrupt_Or_Attach_Handler --
1213 ---------------------------------------
1215 procedure Check_Interrupt_Or_Attach_Handler
is
1216 Arg1_X
: constant Node_Id
:= Expression
(Arg1
);
1217 Handler_Proc
, Proc_Scope
: Entity_Id
;
1222 if Prag_Id
= Pragma_Interrupt_Handler
then
1223 Check_Restriction
(No_Dynamic_Attachment
, N
);
1226 Handler_Proc
:= Find_Unique_Parameterless_Procedure
(Arg1_X
, Arg1
);
1227 Proc_Scope
:= Scope
(Handler_Proc
);
1229 -- On AAMP only, a pragma Interrupt_Handler is supported for
1230 -- nonprotected parameterless procedures.
1232 if not AAMP_On_Target
1233 or else Prag_Id
= Pragma_Attach_Handler
1235 if Ekind
(Proc_Scope
) /= E_Protected_Type
then
1237 ("argument of pragma% must be protected procedure", Arg1
);
1240 if Parent
(N
) /= Protected_Definition
(Parent
(Proc_Scope
)) then
1241 Error_Pragma
("pragma% must be in protected definition");
1245 if not Is_Library_Level_Entity
(Proc_Scope
)
1246 or else (AAMP_On_Target
1247 and then not Is_Library_Level_Entity
(Handler_Proc
))
1250 ("argument for pragma% must be library level entity", Arg1
);
1252 end Check_Interrupt_Or_Attach_Handler
;
1254 -------------------------------------------
1255 -- Check_Is_In_Decl_Part_Or_Package_Spec --
1256 -------------------------------------------
1258 procedure Check_Is_In_Decl_Part_Or_Package_Spec
is
1267 elsif Nkind
(P
) = N_Handled_Sequence_Of_Statements
then
1270 elsif Nkind
(P
) = N_Package_Specification
then
1273 elsif Nkind
(P
) = N_Block_Statement
then
1276 -- Note: the following tests seem a little peculiar, because
1277 -- they test for bodies, but if we were in the statement part
1278 -- of the body, we would already have hit the handled statement
1279 -- sequence, so the only way we get here is by being in the
1280 -- declarative part of the body.
1282 elsif Nkind
(P
) = N_Subprogram_Body
1283 or else Nkind
(P
) = N_Package_Body
1284 or else Nkind
(P
) = N_Task_Body
1285 or else Nkind
(P
) = N_Entry_Body
1293 Error_Pragma
("pragma% is not in declarative part or package spec");
1294 end Check_Is_In_Decl_Part_Or_Package_Spec
;
1296 -------------------------
1297 -- Check_No_Identifier --
1298 -------------------------
1300 procedure Check_No_Identifier
(Arg
: Node_Id
) is
1302 if Chars
(Arg
) /= No_Name
then
1303 Error_Pragma_Arg_Ident
1304 ("pragma% does not permit identifier& here", Arg
);
1306 end Check_No_Identifier
;
1308 --------------------------
1309 -- Check_No_Identifiers --
1310 --------------------------
1312 procedure Check_No_Identifiers
is
1315 if Arg_Count
> 0 then
1317 while Present
(Arg_Node
) loop
1318 Check_No_Identifier
(Arg_Node
);
1322 end Check_No_Identifiers
;
1324 -------------------------------
1325 -- Check_Optional_Identifier --
1326 -------------------------------
1328 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: Name_Id
) is
1330 if Present
(Arg
) and then Chars
(Arg
) /= No_Name
then
1331 if Chars
(Arg
) /= Id
then
1332 Error_Msg_Name_1
:= Pname
;
1333 Error_Msg_Name_2
:= Id
;
1334 Error_Msg_N
("pragma% argument expects identifier%", Arg
);
1338 end Check_Optional_Identifier
;
1340 procedure Check_Optional_Identifier
(Arg
: Node_Id
; Id
: String) is
1342 Name_Buffer
(1 .. Id
'Length) := Id
;
1343 Name_Len
:= Id
'Length;
1344 Check_Optional_Identifier
(Arg
, Name_Find
);
1345 end Check_Optional_Identifier
;
1347 --------------------------------------
1348 -- Check_Precondition_Postcondition --
1349 --------------------------------------
1351 procedure Check_Precondition_Postcondition
(In_Body
: out Boolean) is
1357 if not Is_List_Member
(N
) then
1361 -- Record whether pragma is enabled
1363 Set_PPC_Enabled
(N
, Check_Enabled
(Pname
));
1365 -- Search prior declarations
1368 while Present
(Prev
(P
)) loop
1370 PO
:= Original_Node
(P
);
1372 -- Skip past prior pragma
1374 if Nkind
(PO
) = N_Pragma
then
1377 -- Skip stuff not coming from source
1379 elsif not Comes_From_Source
(PO
) then
1382 -- Here if we hit a subprogram declaration
1384 elsif Nkind
(PO
) = N_Subprogram_Declaration
then
1385 S
:= Defining_Unit_Name
(Specification
(PO
));
1387 -- Analyze the pragma unless it appears within a package spec,
1388 -- which is the case where we delay the analysis of the PPC
1389 -- until the end of the package declarations (for details,
1390 -- see Analyze_Package_Specification.Analyze_PPCs).
1392 if Ekind
(Scope
(S
)) /= E_Package
1394 Ekind
(Scope
(S
)) /= E_Generic_Package
1396 Analyze_PPC_In_Decl_Part
(N
, S
);
1399 -- Chain spec PPC pragma to list for subprogram
1401 Set_Next_Pragma
(N
, Spec_PPC_List
(S
));
1402 Set_Spec_PPC_List
(S
, N
);
1404 -- Return indicating spec case
1409 -- If we encounter any other declaration moving back, misplaced
1416 -- If we fall through loop, pragma is at start of list, so see if
1417 -- it is at the start of declarations of a subprogram body.
1419 if Nkind
(Parent
(N
)) = N_Subprogram_Body
1420 and then List_Containing
(N
) = Declarations
(Parent
(N
))
1425 -- If not, it was misplaced
1430 end Check_Precondition_Postcondition
;
1432 -----------------------------
1433 -- Check_Static_Constraint --
1434 -----------------------------
1436 -- Note: for convenience in writing this procedure, in addition to
1437 -- the officially (i.e. by spec) allowed argument which is always
1438 -- a constraint, it also allows ranges and discriminant associations.
1439 -- Above is not clear ???
1441 procedure Check_Static_Constraint
(Constr
: Node_Id
) is
1443 procedure Require_Static
(E
: Node_Id
);
1444 -- Require given expression to be static expression
1446 --------------------
1447 -- Require_Static --
1448 --------------------
1450 procedure Require_Static
(E
: Node_Id
) is
1452 if not Is_OK_Static_Expression
(E
) then
1453 Flag_Non_Static_Expr
1454 ("non-static constraint not allowed in Unchecked_Union!", E
);
1459 -- Start of processing for Check_Static_Constraint
1462 case Nkind
(Constr
) is
1463 when N_Discriminant_Association
=>
1464 Require_Static
(Expression
(Constr
));
1467 Require_Static
(Low_Bound
(Constr
));
1468 Require_Static
(High_Bound
(Constr
));
1470 when N_Attribute_Reference
=>
1471 Require_Static
(Type_Low_Bound
(Etype
(Prefix
(Constr
))));
1472 Require_Static
(Type_High_Bound
(Etype
(Prefix
(Constr
))));
1474 when N_Range_Constraint
=>
1475 Check_Static_Constraint
(Range_Expression
(Constr
));
1477 when N_Index_Or_Discriminant_Constraint
=>
1481 IDC
:= First
(Constraints
(Constr
));
1482 while Present
(IDC
) loop
1483 Check_Static_Constraint
(IDC
);
1491 end Check_Static_Constraint
;
1493 --------------------------------------
1494 -- Check_Valid_Configuration_Pragma --
1495 --------------------------------------
1497 -- A configuration pragma must appear in the context clause of a
1498 -- compilation unit, and only other pragmas may precede it. Note that
1499 -- the test also allows use in a configuration pragma file.
1501 procedure Check_Valid_Configuration_Pragma
is
1503 if not Is_Configuration_Pragma
then
1504 Error_Pragma
("incorrect placement for configuration pragma%");
1506 end Check_Valid_Configuration_Pragma
;
1508 -------------------------------------
1509 -- Check_Valid_Library_Unit_Pragma --
1510 -------------------------------------
1512 procedure Check_Valid_Library_Unit_Pragma
is
1514 Parent_Node
: Node_Id
;
1515 Unit_Name
: Entity_Id
;
1516 Unit_Kind
: Node_Kind
;
1517 Unit_Node
: Node_Id
;
1518 Sindex
: Source_File_Index
;
1521 if not Is_List_Member
(N
) then
1525 Plist
:= List_Containing
(N
);
1526 Parent_Node
:= Parent
(Plist
);
1528 if Parent_Node
= Empty
then
1531 -- Case of pragma appearing after a compilation unit. In this
1532 -- case it must have an argument with the corresponding name
1533 -- and must be part of the following pragmas of its parent.
1535 elsif Nkind
(Parent_Node
) = N_Compilation_Unit_Aux
then
1536 if Plist
/= Pragmas_After
(Parent_Node
) then
1539 elsif Arg_Count
= 0 then
1541 ("argument required if outside compilation unit");
1544 Check_No_Identifiers
;
1545 Check_Arg_Count
(1);
1546 Unit_Node
:= Unit
(Parent
(Parent_Node
));
1547 Unit_Kind
:= Nkind
(Unit_Node
);
1549 Analyze
(Expression
(Arg1
));
1551 if Unit_Kind
= N_Generic_Subprogram_Declaration
1552 or else Unit_Kind
= N_Subprogram_Declaration
1554 Unit_Name
:= Defining_Entity
(Unit_Node
);
1556 elsif Unit_Kind
in N_Generic_Instantiation
then
1557 Unit_Name
:= Defining_Entity
(Unit_Node
);
1560 Unit_Name
:= Cunit_Entity
(Current_Sem_Unit
);
1563 if Chars
(Unit_Name
) /=
1564 Chars
(Entity
(Expression
(Arg1
)))
1567 ("pragma% argument is not current unit name", Arg1
);
1570 if Ekind
(Unit_Name
) = E_Package
1571 and then Present
(Renamed_Entity
(Unit_Name
))
1573 Error_Pragma
("pragma% not allowed for renamed package");
1577 -- Pragma appears other than after a compilation unit
1580 -- Here we check for the generic instantiation case and also
1581 -- for the case of processing a generic formal package. We
1582 -- detect these cases by noting that the Sloc on the node
1583 -- does not belong to the current compilation unit.
1585 Sindex
:= Source_Index
(Current_Sem_Unit
);
1587 if Loc
not in Source_First
(Sindex
) .. Source_Last
(Sindex
) then
1588 Rewrite
(N
, Make_Null_Statement
(Loc
));
1591 -- If before first declaration, the pragma applies to the
1592 -- enclosing unit, and the name if present must be this name.
1594 elsif Is_Before_First_Decl
(N
, Plist
) then
1595 Unit_Node
:= Unit_Declaration_Node
(Current_Scope
);
1596 Unit_Kind
:= Nkind
(Unit_Node
);
1598 if Nkind
(Parent
(Unit_Node
)) /= N_Compilation_Unit
then
1601 elsif Unit_Kind
= N_Subprogram_Body
1602 and then not Acts_As_Spec
(Unit_Node
)
1606 elsif Nkind
(Parent_Node
) = N_Package_Body
then
1609 elsif Nkind
(Parent_Node
) = N_Package_Specification
1610 and then Plist
= Private_Declarations
(Parent_Node
)
1614 elsif (Nkind
(Parent_Node
) = N_Generic_Package_Declaration
1615 or else Nkind
(Parent_Node
) =
1616 N_Generic_Subprogram_Declaration
)
1617 and then Plist
= Generic_Formal_Declarations
(Parent_Node
)
1621 elsif Arg_Count
> 0 then
1622 Analyze
(Expression
(Arg1
));
1624 if Entity
(Expression
(Arg1
)) /= Current_Scope
then
1626 ("name in pragma% must be enclosing unit", Arg1
);
1629 -- It is legal to have no argument in this context
1635 -- Error if not before first declaration. This is because a
1636 -- library unit pragma argument must be the name of a library
1637 -- unit (RM 10.1.5(7)), but the only names permitted in this
1638 -- context are (RM 10.1.5(6)) names of subprogram declarations,
1639 -- generic subprogram declarations or generic instantiations.
1643 ("pragma% misplaced, must be before first declaration");
1647 end Check_Valid_Library_Unit_Pragma
;
1653 procedure Check_Variant
(Variant
: Node_Id
) is
1654 Clist
: constant Node_Id
:= Component_List
(Variant
);
1658 if not Is_Non_Empty_List
(Component_Items
(Clist
)) then
1660 ("Unchecked_Union may not have empty component list",
1665 Comp
:= First
(Component_Items
(Clist
));
1666 while Present
(Comp
) loop
1667 Check_Component
(Comp
);
1676 procedure Error_Pragma
(Msg
: String) is
1678 Error_Msg_Name_1
:= Pname
;
1679 Error_Msg_N
(Msg
, N
);
1683 ----------------------
1684 -- Error_Pragma_Arg --
1685 ----------------------
1687 procedure Error_Pragma_Arg
(Msg
: String; Arg
: Node_Id
) is
1689 Error_Msg_Name_1
:= Pname
;
1690 Error_Msg_N
(Msg
, Get_Pragma_Arg
(Arg
));
1692 end Error_Pragma_Arg
;
1694 procedure Error_Pragma_Arg
(Msg1
, Msg2
: String; Arg
: Node_Id
) is
1696 Error_Msg_Name_1
:= Pname
;
1697 Error_Msg_N
(Msg1
, Get_Pragma_Arg
(Arg
));
1698 Error_Pragma_Arg
(Msg2
, Arg
);
1699 end Error_Pragma_Arg
;
1701 ----------------------------
1702 -- Error_Pragma_Arg_Ident --
1703 ----------------------------
1705 procedure Error_Pragma_Arg_Ident
(Msg
: String; Arg
: Node_Id
) is
1707 Error_Msg_Name_1
:= Pname
;
1708 Error_Msg_N
(Msg
, Arg
);
1710 end Error_Pragma_Arg_Ident
;
1712 ----------------------
1713 -- Error_Pragma_Ref --
1714 ----------------------
1716 procedure Error_Pragma_Ref
(Msg
: String; Ref
: Entity_Id
) is
1718 Error_Msg_Name_1
:= Pname
;
1719 Error_Msg_Sloc
:= Sloc
(Ref
);
1720 Error_Msg_NE
(Msg
, N
, Ref
);
1722 end Error_Pragma_Ref
;
1724 ------------------------
1725 -- Find_Lib_Unit_Name --
1726 ------------------------
1728 function Find_Lib_Unit_Name
return Entity_Id
is
1730 -- Return inner compilation unit entity, for case of nested
1731 -- categorization pragmas. This happens in generic unit.
1733 if Nkind
(Parent
(N
)) = N_Package_Specification
1734 and then Defining_Entity
(Parent
(N
)) /= Current_Scope
1736 return Defining_Entity
(Parent
(N
));
1738 return Current_Scope
;
1740 end Find_Lib_Unit_Name
;
1742 ----------------------------
1743 -- Find_Program_Unit_Name --
1744 ----------------------------
1746 procedure Find_Program_Unit_Name
(Id
: Node_Id
) is
1747 Unit_Name
: Entity_Id
;
1748 Unit_Kind
: Node_Kind
;
1749 P
: constant Node_Id
:= Parent
(N
);
1752 if Nkind
(P
) = N_Compilation_Unit
then
1753 Unit_Kind
:= Nkind
(Unit
(P
));
1755 if Unit_Kind
= N_Subprogram_Declaration
1756 or else Unit_Kind
= N_Package_Declaration
1757 or else Unit_Kind
in N_Generic_Declaration
1759 Unit_Name
:= Defining_Entity
(Unit
(P
));
1761 if Chars
(Id
) = Chars
(Unit_Name
) then
1762 Set_Entity
(Id
, Unit_Name
);
1763 Set_Etype
(Id
, Etype
(Unit_Name
));
1765 Set_Etype
(Id
, Any_Type
);
1767 ("cannot find program unit referenced by pragma%");
1771 Set_Etype
(Id
, Any_Type
);
1772 Error_Pragma
("pragma% inapplicable to this unit");
1778 end Find_Program_Unit_Name
;
1780 -----------------------------------------
1781 -- Find_Unique_Parameterless_Procedure --
1782 -----------------------------------------
1784 function Find_Unique_Parameterless_Procedure
1786 Arg
: Node_Id
) return Entity_Id
1788 Proc
: Entity_Id
:= Empty
;
1791 -- The body of this procedure needs some comments ???
1793 if not Is_Entity_Name
(Name
) then
1795 ("argument of pragma% must be entity name", Arg
);
1797 elsif not Is_Overloaded
(Name
) then
1798 Proc
:= Entity
(Name
);
1800 if Ekind
(Proc
) /= E_Procedure
1801 or else Present
(First_Formal
(Proc
)) then
1803 ("argument of pragma% must be parameterless procedure", Arg
);
1808 Found
: Boolean := False;
1810 Index
: Interp_Index
;
1813 Get_First_Interp
(Name
, Index
, It
);
1814 while Present
(It
.Nam
) loop
1817 if Ekind
(Proc
) = E_Procedure
1818 and then No
(First_Formal
(Proc
))
1822 Set_Entity
(Name
, Proc
);
1823 Set_Is_Overloaded
(Name
, False);
1826 ("ambiguous handler name for pragma% ", Arg
);
1830 Get_Next_Interp
(Index
, It
);
1835 ("argument of pragma% must be parameterless procedure",
1838 Proc
:= Entity
(Name
);
1844 end Find_Unique_Parameterless_Procedure
;
1846 -------------------------
1847 -- Gather_Associations --
1848 -------------------------
1850 procedure Gather_Associations
1852 Args
: out Args_List
)
1857 -- Initialize all parameters to Empty
1859 for J
in Args
'Range loop
1863 -- That's all we have to do if there are no argument associations
1865 if No
(Pragma_Argument_Associations
(N
)) then
1869 -- Otherwise first deal with any positional parameters present
1871 Arg
:= First
(Pragma_Argument_Associations
(N
));
1872 for Index
in Args
'Range loop
1873 exit when No
(Arg
) or else Chars
(Arg
) /= No_Name
;
1874 Args
(Index
) := Expression
(Arg
);
1878 -- Positional parameters all processed, if any left, then we
1879 -- have too many positional parameters.
1881 if Present
(Arg
) and then Chars
(Arg
) = No_Name
then
1883 ("too many positional associations for pragma%", Arg
);
1886 -- Process named parameters if any are present
1888 while Present
(Arg
) loop
1889 if Chars
(Arg
) = No_Name
then
1891 ("positional association cannot follow named association",
1895 for Index
in Names
'Range loop
1896 if Names
(Index
) = Chars
(Arg
) then
1897 if Present
(Args
(Index
)) then
1899 ("duplicate argument association for pragma%", Arg
);
1901 Args
(Index
) := Expression
(Arg
);
1906 if Index
= Names
'Last then
1907 Error_Msg_Name_1
:= Pname
;
1908 Error_Msg_N
("pragma% does not allow & argument", Arg
);
1910 -- Check for possible misspelling
1912 for Index1
in Names
'Range loop
1913 if Is_Bad_Spelling_Of
1914 (Chars
(Arg
), Names
(Index1
))
1916 Error_Msg_Name_1
:= Names
(Index1
);
1917 Error_Msg_N
("\possible misspelling of%", Arg
);
1929 end Gather_Associations
;
1935 procedure GNAT_Pragma
is
1937 Check_Restriction
(No_Implementation_Pragmas
, N
);
1940 --------------------------
1941 -- Is_Before_First_Decl --
1942 --------------------------
1944 function Is_Before_First_Decl
1945 (Pragma_Node
: Node_Id
;
1946 Decls
: List_Id
) return Boolean
1948 Item
: Node_Id
:= First
(Decls
);
1951 -- Only other pragmas can come before this pragma
1954 if No
(Item
) or else Nkind
(Item
) /= N_Pragma
then
1957 elsif Item
= Pragma_Node
then
1963 end Is_Before_First_Decl
;
1965 -----------------------------
1966 -- Is_Configuration_Pragma --
1967 -----------------------------
1969 -- A configuration pragma must appear in the context clause of a
1970 -- compilation unit, and only other pragmas may precede it. Note that
1971 -- the test below also permits use in a configuration pragma file.
1973 function Is_Configuration_Pragma
return Boolean is
1974 Lis
: constant List_Id
:= List_Containing
(N
);
1975 Par
: constant Node_Id
:= Parent
(N
);
1979 -- If no parent, then we are in the configuration pragma file,
1980 -- so the placement is definitely appropriate.
1985 -- Otherwise we must be in the context clause of a compilation unit
1986 -- and the only thing allowed before us in the context list is more
1987 -- configuration pragmas.
1989 elsif Nkind
(Par
) = N_Compilation_Unit
1990 and then Context_Items
(Par
) = Lis
1997 elsif Nkind
(Prg
) /= N_Pragma
then
2007 end Is_Configuration_Pragma
;
2009 --------------------------
2010 -- Is_In_Context_Clause --
2011 --------------------------
2013 function Is_In_Context_Clause
return Boolean is
2015 Parent_Node
: Node_Id
;
2018 if not Is_List_Member
(N
) then
2022 Plist
:= List_Containing
(N
);
2023 Parent_Node
:= Parent
(Plist
);
2025 if Parent_Node
= Empty
2026 or else Nkind
(Parent_Node
) /= N_Compilation_Unit
2027 or else Context_Items
(Parent_Node
) /= Plist
2034 end Is_In_Context_Clause
;
2036 ---------------------------------
2037 -- Is_Static_String_Expression --
2038 ---------------------------------
2040 function Is_Static_String_Expression
(Arg
: Node_Id
) return Boolean is
2041 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg
);
2044 Analyze_And_Resolve
(Argx
);
2045 return Is_OK_Static_Expression
(Argx
)
2046 and then Nkind
(Argx
) = N_String_Literal
;
2047 end Is_Static_String_Expression
;
2049 ----------------------
2050 -- Pragma_Misplaced --
2051 ----------------------
2053 procedure Pragma_Misplaced
is
2055 Error_Pragma
("incorrect placement of pragma%");
2056 end Pragma_Misplaced
;
2058 ------------------------------------
2059 -- Process Atomic_Shared_Volatile --
2060 ------------------------------------
2062 procedure Process_Atomic_Shared_Volatile
is
2069 procedure Set_Atomic
(E
: Entity_Id
);
2070 -- Set given type as atomic, and if no explicit alignment was given,
2071 -- set alignment to unknown, since back end knows what the alignment
2072 -- requirements are for atomic arrays. Note: this step is necessary
2073 -- for derived types.
2079 procedure Set_Atomic
(E
: Entity_Id
) is
2083 if not Has_Alignment_Clause
(E
) then
2084 Set_Alignment
(E
, Uint_0
);
2088 -- Start of processing for Process_Atomic_Shared_Volatile
2091 Check_Ada_83_Warning
;
2092 Check_No_Identifiers
;
2093 Check_Arg_Count
(1);
2094 Check_Arg_Is_Local_Name
(Arg1
);
2095 E_Id
:= Expression
(Arg1
);
2097 if Etype
(E_Id
) = Any_Type
then
2102 D
:= Declaration_Node
(E
);
2106 if Rep_Item_Too_Early
(E
, N
)
2108 Rep_Item_Too_Late
(E
, N
)
2112 Check_First_Subtype
(Arg1
);
2115 if Prag_Id
/= Pragma_Volatile
then
2117 Set_Atomic
(Underlying_Type
(E
));
2118 Set_Atomic
(Base_Type
(E
));
2121 -- Attribute belongs on the base type. If the view of the type is
2122 -- currently private, it also belongs on the underlying type.
2124 Set_Is_Volatile
(Base_Type
(E
));
2125 Set_Is_Volatile
(Underlying_Type
(E
));
2127 Set_Treat_As_Volatile
(E
);
2128 Set_Treat_As_Volatile
(Underlying_Type
(E
));
2130 elsif K
= N_Object_Declaration
2131 or else (K
= N_Component_Declaration
2132 and then Original_Record_Component
(E
) = E
)
2134 if Rep_Item_Too_Late
(E
, N
) then
2138 if Prag_Id
/= Pragma_Volatile
then
2141 -- If the object declaration has an explicit initialization, a
2142 -- temporary may have to be created to hold the expression, to
2143 -- ensure that access to the object remain atomic.
2145 if Nkind
(Parent
(E
)) = N_Object_Declaration
2146 and then Present
(Expression
(Parent
(E
)))
2148 Set_Has_Delayed_Freeze
(E
);
2151 -- An interesting improvement here. If an object of type X
2152 -- is declared atomic, and the type X is not atomic, that's
2153 -- a pity, since it may not have appropriate alignment etc.
2154 -- We can rescue this in the special case where the object
2155 -- and type are in the same unit by just setting the type
2156 -- as atomic, so that the back end will process it as atomic.
2158 Utyp
:= Underlying_Type
(Etype
(E
));
2161 and then Sloc
(E
) > No_Location
2162 and then Sloc
(Utyp
) > No_Location
2164 Get_Source_File_Index
(Sloc
(E
)) =
2165 Get_Source_File_Index
(Sloc
(Underlying_Type
(Etype
(E
))))
2167 Set_Is_Atomic
(Underlying_Type
(Etype
(E
)));
2171 Set_Is_Volatile
(E
);
2172 Set_Treat_As_Volatile
(E
);
2176 ("inappropriate entity for pragma%", Arg1
);
2178 end Process_Atomic_Shared_Volatile
;
2180 -------------------------------------------
2181 -- Process_Compile_Time_Warning_Or_Error --
2182 -------------------------------------------
2184 procedure Process_Compile_Time_Warning_Or_Error
is
2185 Arg1x
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
2189 Check_Arg_Count
(2);
2190 Check_No_Identifiers
;
2191 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
2192 Analyze_And_Resolve
(Arg1x
, Standard_Boolean
);
2194 if Compile_Time_Known_Value
(Arg1x
) then
2195 if Is_True
(Expr_Value
(Get_Pragma_Arg
(Arg1
))) then
2197 Str
: constant String_Id
:=
2198 Strval
(Get_Pragma_Arg
(Arg2
));
2199 Len
: constant Int
:= String_Length
(Str
);
2204 Cent
: constant Entity_Id
:=
2205 Cunit_Entity
(Current_Sem_Unit
);
2207 Force
: constant Boolean :=
2208 Prag_Id
= Pragma_Compile_Time_Warning
2210 Is_Spec_Name
(Unit_Name
(Current_Sem_Unit
))
2211 and then (Ekind
(Cent
) /= E_Package
2212 or else not In_Private_Part
(Cent
));
2213 -- Set True if this is the warning case, and we are in the
2214 -- visible part of a package spec, or in a subprogram spec,
2215 -- in which case we want to force the client to see the
2216 -- warning, even though it is not in the main unit.
2219 -- Loop through segments of message separated by line
2220 -- feeds. We output these segments as separate messages
2221 -- with continuation marks for all but the first.
2226 Error_Msg_Strlen
:= 0;
2228 -- Loop to copy characters from argument to error
2229 -- message string buffer.
2232 exit when Ptr
> Len
;
2233 CC
:= Get_String_Char
(Str
, Ptr
);
2236 -- Ignore wide chars ??? else store character
2238 if In_Character_Range
(CC
) then
2239 C
:= Get_Character
(CC
);
2240 exit when C
= ASCII
.LF
;
2241 Error_Msg_Strlen
:= Error_Msg_Strlen
+ 1;
2242 Error_Msg_String
(Error_Msg_Strlen
) := C
;
2246 -- Here with one line ready to go
2248 Error_Msg_Warn
:= Prag_Id
= Pragma_Compile_Time_Warning
;
2250 -- If this is a warning in a spec, then we want clients
2251 -- to see the warning, so mark the message with the
2252 -- special sequence !! to force the warning. In the case
2253 -- of a package spec, we do not force this if we are in
2254 -- the private part of the spec.
2257 if Cont
= False then
2258 Error_Msg_N
("<~!!", Arg1
);
2261 Error_Msg_N
("\<~!!", Arg1
);
2264 -- Error, rather than warning, or in a body, so we do not
2265 -- need to force visibility for client (error will be
2266 -- output in any case, and this is the situation in which
2267 -- we do not want a client to get a warning, since the
2268 -- warning is in the body or the spec private part.
2271 if Cont
= False then
2272 Error_Msg_N
("<~", Arg1
);
2275 Error_Msg_N
("\<~", Arg1
);
2279 exit when Ptr
> Len
;
2284 end Process_Compile_Time_Warning_Or_Error
;
2286 ------------------------
2287 -- Process_Convention --
2288 ------------------------
2290 procedure Process_Convention
2291 (C
: out Convention_Id
;
2297 Comp_Unit
: Unit_Number_Type
;
2299 procedure Set_Convention_From_Pragma
(E
: Entity_Id
);
2300 -- Set convention in entity E, and also flag that the entity has a
2301 -- convention pragma. If entity is for a private or incomplete type,
2302 -- also set convention and flag on underlying type. This procedure
2303 -- also deals with the special case of C_Pass_By_Copy convention.
2305 --------------------------------
2306 -- Set_Convention_From_Pragma --
2307 --------------------------------
2309 procedure Set_Convention_From_Pragma
(E
: Entity_Id
) is
2311 -- Ada 2005 (AI-430): Check invalid attempt to change convention
2312 -- for an overridden dispatching operation. Technically this is
2313 -- an amendment and should only be done in Ada 2005 mode. However,
2314 -- this is clearly a mistake, since the problem that is addressed
2315 -- by this AI is that there is a clear gap in the RM!
2317 if Is_Dispatching_Operation
(E
)
2318 and then Present
(Overridden_Operation
(E
))
2319 and then C
/= Convention
(Overridden_Operation
(E
))
2322 ("cannot change convention for " &
2323 "overridden dispatching operation",
2327 -- Set the convention
2329 Set_Convention
(E
, C
);
2330 Set_Has_Convention_Pragma
(E
);
2332 if Is_Incomplete_Or_Private_Type
(E
) then
2333 Set_Convention
(Underlying_Type
(E
), C
);
2334 Set_Has_Convention_Pragma
(Underlying_Type
(E
), True);
2337 -- A class-wide type should inherit the convention of
2338 -- the specific root type (although this isn't specified
2339 -- clearly by the RM).
2341 if Is_Type
(E
) and then Present
(Class_Wide_Type
(E
)) then
2342 Set_Convention
(Class_Wide_Type
(E
), C
);
2345 -- If the entity is a record type, then check for special case of
2346 -- C_Pass_By_Copy, which is treated the same as C except that the
2347 -- special record flag is set. This convention is only permitted
2348 -- on record types (see AI95-00131).
2350 if Cname
= Name_C_Pass_By_Copy
then
2351 if Is_Record_Type
(E
) then
2352 Set_C_Pass_By_Copy
(Base_Type
(E
));
2353 elsif Is_Incomplete_Or_Private_Type
(E
)
2354 and then Is_Record_Type
(Underlying_Type
(E
))
2356 Set_C_Pass_By_Copy
(Base_Type
(Underlying_Type
(E
)));
2359 ("C_Pass_By_Copy convention allowed only for record type",
2364 -- If the entity is a derived boolean type, check for the
2365 -- special case of convention C, C++, or Fortran, where we
2366 -- consider any nonzero value to represent true.
2368 if Is_Discrete_Type
(E
)
2369 and then Root_Type
(Etype
(E
)) = Standard_Boolean
2375 C
= Convention_Fortran
)
2377 Set_Nonzero_Is_True
(Base_Type
(E
));
2379 end Set_Convention_From_Pragma
;
2381 -- Start of processing for Process_Convention
2384 Check_At_Least_N_Arguments
(2);
2385 Check_Optional_Identifier
(Arg1
, Name_Convention
);
2386 Check_Arg_Is_Identifier
(Arg1
);
2387 Cname
:= Chars
(Expression
(Arg1
));
2389 -- C_Pass_By_Copy is treated as a synonym for convention C
2390 -- (this is tested again below to set the critical flag)
2392 if Cname
= Name_C_Pass_By_Copy
then
2395 -- Otherwise we must have something in the standard convention list
2397 elsif Is_Convention_Name
(Cname
) then
2398 C
:= Get_Convention_Id
(Chars
(Expression
(Arg1
)));
2400 -- In DEC VMS, it seems that there is an undocumented feature that
2401 -- any unrecognized convention is treated as the default, which for
2402 -- us is convention C. It does not seem so terrible to do this
2403 -- unconditionally, silently in the VMS case, and with a warning
2404 -- in the non-VMS case.
2407 if Warn_On_Export_Import
and not OpenVMS_On_Target
then
2409 ("?unrecognized convention name, C assumed",
2416 Check_Optional_Identifier
(Arg2
, Name_Entity
);
2417 Check_Arg_Is_Local_Name
(Arg2
);
2419 Id
:= Expression
(Arg2
);
2422 if not Is_Entity_Name
(Id
) then
2423 Error_Pragma_Arg
("entity name required", Arg2
);
2428 -- Go to renamed subprogram if present, since convention applies to
2429 -- the actual renamed entity, not to the renaming entity. If the
2430 -- subprogram is inherited, go to parent subprogram.
2432 if Is_Subprogram
(E
)
2433 and then Present
(Alias
(E
))
2435 if Nkind
(Parent
(Declaration_Node
(E
))) =
2436 N_Subprogram_Renaming_Declaration
2438 if Scope
(E
) /= Scope
(Alias
(E
)) then
2440 ("cannot apply pragma% to non-local renaming&#", E
);
2444 elsif Nkind
(Parent
(E
)) = N_Full_Type_Declaration
2445 and then Scope
(E
) = Scope
(Alias
(E
))
2451 -- Check that we are not applying this to a specless body
2453 if Is_Subprogram
(E
)
2454 and then Nkind
(Parent
(Declaration_Node
(E
))) = N_Subprogram_Body
2457 ("pragma% requires separate spec and must come before body");
2460 -- Check that we are not applying this to a named constant
2462 if Ekind
(E
) = E_Named_Integer
2464 Ekind
(E
) = E_Named_Real
2466 Error_Msg_Name_1
:= Pname
;
2468 ("cannot apply pragma% to named constant!",
2469 Get_Pragma_Arg
(Arg2
));
2471 ("\supply appropriate type for&!", Arg2
);
2474 if Ekind
(E
) = E_Enumeration_Literal
then
2475 Error_Pragma
("enumeration literal not allowed for pragma%");
2478 -- Check for rep item appearing too early or too late
2480 if Etype
(E
) = Any_Type
2481 or else Rep_Item_Too_Early
(E
, N
)
2485 E
:= Underlying_Type
(E
);
2488 if Rep_Item_Too_Late
(E
, N
) then
2492 if Has_Convention_Pragma
(E
) then
2494 ("at most one Convention/Export/Import pragma is allowed", Arg2
);
2496 elsif Convention
(E
) = Convention_Protected
2497 or else Ekind
(Scope
(E
)) = E_Protected_Type
2500 ("a protected operation cannot be given a different convention",
2504 -- For Intrinsic, a subprogram is required
2506 if C
= Convention_Intrinsic
2507 and then not Is_Subprogram
(E
)
2508 and then not Is_Generic_Subprogram
(E
)
2511 ("second argument of pragma% must be a subprogram", Arg2
);
2514 -- For Stdcall, a subprogram, variable or subprogram type is required
2516 if C
= Convention_Stdcall
2517 and then not Is_Subprogram
(E
)
2518 and then not Is_Generic_Subprogram
(E
)
2519 and then Ekind
(E
) /= E_Variable
2522 and then Ekind
(Designated_Type
(E
)) = E_Subprogram_Type
)
2525 ("second argument of pragma% must be subprogram (type)",
2529 if not Is_Subprogram
(E
)
2530 and then not Is_Generic_Subprogram
(E
)
2532 Set_Convention_From_Pragma
(E
);
2536 Check_First_Subtype
(Arg2
);
2537 Set_Convention_From_Pragma
(Base_Type
(E
));
2539 -- For subprograms, we must set the convention on the
2540 -- internally generated directly designated type as well.
2542 if Ekind
(E
) = E_Access_Subprogram_Type
then
2543 Set_Convention_From_Pragma
(Directly_Designated_Type
(E
));
2547 -- For the subprogram case, set proper convention for all homonyms
2548 -- in same scope and the same declarative part, i.e. the same
2549 -- compilation unit.
2552 Comp_Unit
:= Get_Source_Unit
(E
);
2553 Set_Convention_From_Pragma
(E
);
2555 -- Treat a pragma Import as an implicit body, for GPS use
2557 if Prag_Id
= Pragma_Import
then
2558 Generate_Reference
(E
, Id
, 'b');
2564 exit when No
(E1
) or else Scope
(E1
) /= Current_Scope
;
2566 -- Do not set the pragma on inherited operations or on
2567 -- formal subprograms.
2569 if Comes_From_Source
(E1
)
2570 and then Comp_Unit
= Get_Source_Unit
(E1
)
2571 and then not Is_Formal_Subprogram
(E1
)
2572 and then Nkind
(Original_Node
(Parent
(E1
))) /=
2573 N_Full_Type_Declaration
2575 if Present
(Alias
(E1
))
2576 and then Scope
(E1
) /= Scope
(Alias
(E1
))
2579 ("cannot apply pragma% to non-local renaming&#", E1
);
2581 Set_Convention_From_Pragma
(E1
);
2583 if Prag_Id
= Pragma_Import
then
2584 Generate_Reference
(E
, Id
, 'b');
2589 end Process_Convention
;
2591 -----------------------------------------------------
2592 -- Process_Extended_Import_Export_Exception_Pragma --
2593 -----------------------------------------------------
2595 procedure Process_Extended_Import_Export_Exception_Pragma
2596 (Arg_Internal
: Node_Id
;
2597 Arg_External
: Node_Id
;
2607 if not OpenVMS_On_Target
then
2609 ("?pragma% ignored (applies only to Open'V'M'S)");
2612 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2613 Def_Id
:= Entity
(Arg_Internal
);
2615 if Ekind
(Def_Id
) /= E_Exception
then
2617 ("pragma% must refer to declared exception", Arg_Internal
);
2620 Set_Extended_Import_Export_External_Name
(Def_Id
, Arg_External
);
2622 if Present
(Arg_Form
) then
2623 Check_Arg_Is_One_Of
(Arg_Form
, Name_Ada
, Name_VMS
);
2626 if Present
(Arg_Form
)
2627 and then Chars
(Arg_Form
) = Name_Ada
2631 Set_Is_VMS_Exception
(Def_Id
);
2632 Set_Exception_Code
(Def_Id
, No_Uint
);
2635 if Present
(Arg_Code
) then
2636 if not Is_VMS_Exception
(Def_Id
) then
2638 ("Code option for pragma% not allowed for Ada case",
2642 Check_Arg_Is_Static_Expression
(Arg_Code
, Any_Integer
);
2643 Code_Val
:= Expr_Value
(Arg_Code
);
2645 if not UI_Is_In_Int_Range
(Code_Val
) then
2647 ("Code option for pragma% must be in 32-bit range",
2651 Set_Exception_Code
(Def_Id
, Code_Val
);
2654 end Process_Extended_Import_Export_Exception_Pragma
;
2656 -------------------------------------------------
2657 -- Process_Extended_Import_Export_Internal_Arg --
2658 -------------------------------------------------
2660 procedure Process_Extended_Import_Export_Internal_Arg
2661 (Arg_Internal
: Node_Id
:= Empty
)
2666 if No
(Arg_Internal
) then
2667 Error_Pragma
("Internal parameter required for pragma%");
2670 if Nkind
(Arg_Internal
) = N_Identifier
then
2673 elsif Nkind
(Arg_Internal
) = N_Operator_Symbol
2674 and then (Prag_Id
= Pragma_Import_Function
2676 Prag_Id
= Pragma_Export_Function
)
2682 ("wrong form for Internal parameter for pragma%", Arg_Internal
);
2685 Check_Arg_Is_Local_Name
(Arg_Internal
);
2686 end Process_Extended_Import_Export_Internal_Arg
;
2688 --------------------------------------------------
2689 -- Process_Extended_Import_Export_Object_Pragma --
2690 --------------------------------------------------
2692 procedure Process_Extended_Import_Export_Object_Pragma
2693 (Arg_Internal
: Node_Id
;
2694 Arg_External
: Node_Id
;
2700 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2701 Def_Id
:= Entity
(Arg_Internal
);
2703 if Ekind
(Def_Id
) /= E_Constant
2704 and then Ekind
(Def_Id
) /= E_Variable
2707 ("pragma% must designate an object", Arg_Internal
);
2710 if Has_Rep_Pragma
(Def_Id
, Name_Common_Object
)
2712 Has_Rep_Pragma
(Def_Id
, Name_Psect_Object
)
2715 ("previous Common/Psect_Object applies, pragma % not permitted",
2719 if Rep_Item_Too_Late
(Def_Id
, N
) then
2723 Set_Extended_Import_Export_External_Name
(Def_Id
, Arg_External
);
2725 if Present
(Arg_Size
) then
2726 Check_Arg_Is_External_Name
(Arg_Size
);
2729 -- Export_Object case
2731 if Prag_Id
= Pragma_Export_Object
then
2732 if not Is_Library_Level_Entity
(Def_Id
) then
2734 ("argument for pragma% must be library level entity",
2738 if Ekind
(Current_Scope
) = E_Generic_Package
then
2739 Error_Pragma
("pragma& cannot appear in a generic unit");
2742 if not Size_Known_At_Compile_Time
(Etype
(Def_Id
)) then
2744 ("exported object must have compile time known size",
2748 if Warn_On_Export_Import
and then Is_Exported
(Def_Id
) then
2750 ("?duplicate Export_Object pragma", N
);
2752 Set_Exported
(Def_Id
, Arg_Internal
);
2755 -- Import_Object case
2758 if Is_Concurrent_Type
(Etype
(Def_Id
)) then
2760 ("cannot use pragma% for task/protected object",
2764 if Ekind
(Def_Id
) = E_Constant
then
2766 ("cannot import a constant", Arg_Internal
);
2769 if Warn_On_Export_Import
2770 and then Has_Discriminants
(Etype
(Def_Id
))
2773 ("imported value must be initialized?", Arg_Internal
);
2776 if Warn_On_Export_Import
2777 and then Is_Access_Type
(Etype
(Def_Id
))
2780 ("cannot import object of an access type?", Arg_Internal
);
2783 if Warn_On_Export_Import
2784 and then Is_Imported
(Def_Id
)
2787 ("?duplicate Import_Object pragma", N
);
2789 -- Check for explicit initialization present. Note that an
2790 -- initialization that generated by the code generator, e.g.
2791 -- for an access type, does not count here.
2793 elsif Present
(Expression
(Parent
(Def_Id
)))
2796 (Original_Node
(Expression
(Parent
(Def_Id
))))
2798 Error_Msg_Sloc
:= Sloc
(Def_Id
);
2800 ("imported entities cannot be initialized (RM B.1(24))",
2801 "\no initialization allowed for & declared#", Arg1
);
2803 Set_Imported
(Def_Id
);
2804 Note_Possible_Modification
(Arg_Internal
, Sure
=> False);
2807 end Process_Extended_Import_Export_Object_Pragma
;
2809 ------------------------------------------------------
2810 -- Process_Extended_Import_Export_Subprogram_Pragma --
2811 ------------------------------------------------------
2813 procedure Process_Extended_Import_Export_Subprogram_Pragma
2814 (Arg_Internal
: Node_Id
;
2815 Arg_External
: Node_Id
;
2816 Arg_Parameter_Types
: Node_Id
;
2817 Arg_Result_Type
: Node_Id
:= Empty
;
2818 Arg_Mechanism
: Node_Id
;
2819 Arg_Result_Mechanism
: Node_Id
:= Empty
;
2820 Arg_First_Optional_Parameter
: Node_Id
:= Empty
)
2826 Ambiguous
: Boolean;
2830 function Same_Base_Type
2832 Formal
: Entity_Id
) return Boolean;
2833 -- Determines if Ptype references the type of Formal. Note that
2834 -- only the base types need to match according to the spec. Ptype
2835 -- here is the argument from the pragma, which is either a type
2836 -- name, or an access attribute.
2838 --------------------
2839 -- Same_Base_Type --
2840 --------------------
2842 function Same_Base_Type
2844 Formal
: Entity_Id
) return Boolean
2846 Ftyp
: constant Entity_Id
:= Base_Type
(Etype
(Formal
));
2850 -- Case where pragma argument is typ'Access
2852 if Nkind
(Ptype
) = N_Attribute_Reference
2853 and then Attribute_Name
(Ptype
) = Name_Access
2855 Pref
:= Prefix
(Ptype
);
2858 if not Is_Entity_Name
(Pref
)
2859 or else Entity
(Pref
) = Any_Type
2864 -- We have a match if the corresponding argument is of an
2865 -- anonymous access type, and its designated type matches
2866 -- the type of the prefix of the access attribute
2868 return Ekind
(Ftyp
) = E_Anonymous_Access_Type
2869 and then Base_Type
(Entity
(Pref
)) =
2870 Base_Type
(Etype
(Designated_Type
(Ftyp
)));
2872 -- Case where pragma argument is a type name
2877 if not Is_Entity_Name
(Ptype
)
2878 or else Entity
(Ptype
) = Any_Type
2883 -- We have a match if the corresponding argument is of
2884 -- the type given in the pragma (comparing base types)
2886 return Base_Type
(Entity
(Ptype
)) = Ftyp
;
2890 -- Start of processing for
2891 -- Process_Extended_Import_Export_Subprogram_Pragma
2894 Process_Extended_Import_Export_Internal_Arg
(Arg_Internal
);
2898 -- Loop through homonyms (overloadings) of the entity
2900 Hom_Id
:= Entity
(Arg_Internal
);
2901 while Present
(Hom_Id
) loop
2902 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
2904 -- We need a subprogram in the current scope
2906 if not Is_Subprogram
(Def_Id
)
2907 or else Scope
(Def_Id
) /= Current_Scope
2914 -- Pragma cannot apply to subprogram body
2916 if Is_Subprogram
(Def_Id
)
2919 (Declaration_Node
(Def_Id
))) = N_Subprogram_Body
2922 ("pragma% requires separate spec"
2923 & " and must come before body");
2926 -- Test result type if given, note that the result type
2927 -- parameter can only be present for the function cases.
2929 if Present
(Arg_Result_Type
)
2930 and then not Same_Base_Type
(Arg_Result_Type
, Def_Id
)
2934 elsif Etype
(Def_Id
) /= Standard_Void_Type
2936 (Pname
= Name_Export_Procedure
2938 Pname
= Name_Import_Procedure
)
2942 -- Test parameter types if given. Note that this parameter
2943 -- has not been analyzed (and must not be, since it is
2944 -- semantic nonsense), so we get it as the parser left it.
2946 elsif Present
(Arg_Parameter_Types
) then
2947 Check_Matching_Types
: declare
2952 Formal
:= First_Formal
(Def_Id
);
2954 if Nkind
(Arg_Parameter_Types
) = N_Null
then
2955 if Present
(Formal
) then
2959 -- A list of one type, e.g. (List) is parsed as
2960 -- a parenthesized expression.
2962 elsif Nkind
(Arg_Parameter_Types
) /= N_Aggregate
2963 and then Paren_Count
(Arg_Parameter_Types
) = 1
2966 or else Present
(Next_Formal
(Formal
))
2971 Same_Base_Type
(Arg_Parameter_Types
, Formal
);
2974 -- A list of more than one type is parsed as a aggregate
2976 elsif Nkind
(Arg_Parameter_Types
) = N_Aggregate
2977 and then Paren_Count
(Arg_Parameter_Types
) = 0
2979 Ptype
:= First
(Expressions
(Arg_Parameter_Types
));
2980 while Present
(Ptype
) or else Present
(Formal
) loop
2983 or else not Same_Base_Type
(Ptype
, Formal
)
2988 Next_Formal
(Formal
);
2993 -- Anything else is of the wrong form
2997 ("wrong form for Parameter_Types parameter",
2998 Arg_Parameter_Types
);
3000 end Check_Matching_Types
;
3003 -- Match is now False if the entry we found did not match
3004 -- either a supplied Parameter_Types or Result_Types argument
3010 -- Ambiguous case, the flag Ambiguous shows if we already
3011 -- detected this and output the initial messages.
3014 if not Ambiguous
then
3016 Error_Msg_Name_1
:= Pname
;
3018 ("pragma% does not uniquely identify subprogram!",
3020 Error_Msg_Sloc
:= Sloc
(Ent
);
3021 Error_Msg_N
("matching subprogram #!", N
);
3025 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3026 Error_Msg_N
("matching subprogram #!", N
);
3031 Hom_Id
:= Homonym
(Hom_Id
);
3034 -- See if we found an entry
3037 if not Ambiguous
then
3038 if Is_Generic_Subprogram
(Entity
(Arg_Internal
)) then
3040 ("pragma% cannot be given for generic subprogram");
3043 ("pragma% does not identify local subprogram");
3050 -- Import pragmas must be be for imported entities
3052 if Prag_Id
= Pragma_Import_Function
3054 Prag_Id
= Pragma_Import_Procedure
3056 Prag_Id
= Pragma_Import_Valued_Procedure
3058 if not Is_Imported
(Ent
) then
3060 ("pragma Import or Interface must precede pragma%");
3063 -- Here we have the Export case which can set the entity as exported
3065 -- But does not do so if the specified external name is null, since
3066 -- that is taken as a signal in DEC Ada 83 (with which we want to be
3067 -- compatible) to request no external name.
3069 elsif Nkind
(Arg_External
) = N_String_Literal
3070 and then String_Length
(Strval
(Arg_External
)) = 0
3074 -- In all other cases, set entity as exported
3077 Set_Exported
(Ent
, Arg_Internal
);
3080 -- Special processing for Valued_Procedure cases
3082 if Prag_Id
= Pragma_Import_Valued_Procedure
3084 Prag_Id
= Pragma_Export_Valued_Procedure
3086 Formal
:= First_Formal
(Ent
);
3090 ("at least one parameter required for pragma%");
3092 elsif Ekind
(Formal
) /= E_Out_Parameter
then
3094 ("first parameter must have mode out for pragma%");
3097 Set_Is_Valued_Procedure
(Ent
);
3101 Set_Extended_Import_Export_External_Name
(Ent
, Arg_External
);
3103 -- Process Result_Mechanism argument if present. We have already
3104 -- checked that this is only allowed for the function case.
3106 if Present
(Arg_Result_Mechanism
) then
3107 Set_Mechanism_Value
(Ent
, Arg_Result_Mechanism
);
3110 -- Process Mechanism parameter if present. Note that this parameter
3111 -- is not analyzed, and must not be analyzed since it is semantic
3112 -- nonsense, so we get it in exactly as the parser left it.
3114 if Present
(Arg_Mechanism
) then
3122 -- A single mechanism association without a formal parameter
3123 -- name is parsed as a parenthesized expression. All other
3124 -- cases are parsed as aggregates, so we rewrite the single
3125 -- parameter case as an aggregate for consistency.
3127 if Nkind
(Arg_Mechanism
) /= N_Aggregate
3128 and then Paren_Count
(Arg_Mechanism
) = 1
3130 Rewrite
(Arg_Mechanism
,
3131 Make_Aggregate
(Sloc
(Arg_Mechanism
),
3132 Expressions
=> New_List
(
3133 Relocate_Node
(Arg_Mechanism
))));
3136 -- Case of only mechanism name given, applies to all formals
3138 if Nkind
(Arg_Mechanism
) /= N_Aggregate
then
3139 Formal
:= First_Formal
(Ent
);
3140 while Present
(Formal
) loop
3141 Set_Mechanism_Value
(Formal
, Arg_Mechanism
);
3142 Next_Formal
(Formal
);
3145 -- Case of list of mechanism associations given
3148 if Null_Record_Present
(Arg_Mechanism
) then
3150 ("inappropriate form for Mechanism parameter",
3154 -- Deal with positional ones first
3156 Formal
:= First_Formal
(Ent
);
3158 if Present
(Expressions
(Arg_Mechanism
)) then
3159 Mname
:= First
(Expressions
(Arg_Mechanism
));
3160 while Present
(Mname
) loop
3163 ("too many mechanism associations", Mname
);
3166 Set_Mechanism_Value
(Formal
, Mname
);
3167 Next_Formal
(Formal
);
3172 -- Deal with named entries
3174 if Present
(Component_Associations
(Arg_Mechanism
)) then
3175 Massoc
:= First
(Component_Associations
(Arg_Mechanism
));
3176 while Present
(Massoc
) loop
3177 Choice
:= First
(Choices
(Massoc
));
3179 if Nkind
(Choice
) /= N_Identifier
3180 or else Present
(Next
(Choice
))
3183 ("incorrect form for mechanism association",
3187 Formal
:= First_Formal
(Ent
);
3191 ("parameter name & not present", Choice
);
3194 if Chars
(Choice
) = Chars
(Formal
) then
3196 (Formal
, Expression
(Massoc
));
3198 -- Set entity on identifier for ASIS
3200 Set_Entity
(Choice
, Formal
);
3205 Next_Formal
(Formal
);
3215 -- Process First_Optional_Parameter argument if present. We have
3216 -- already checked that this is only allowed for the Import case.
3218 if Present
(Arg_First_Optional_Parameter
) then
3219 if Nkind
(Arg_First_Optional_Parameter
) /= N_Identifier
then
3221 ("first optional parameter must be formal parameter name",
3222 Arg_First_Optional_Parameter
);
3225 Formal
:= First_Formal
(Ent
);
3229 ("specified formal parameter& not found",
3230 Arg_First_Optional_Parameter
);
3233 exit when Chars
(Formal
) =
3234 Chars
(Arg_First_Optional_Parameter
);
3236 Next_Formal
(Formal
);
3239 Set_First_Optional_Parameter
(Ent
, Formal
);
3241 -- Check specified and all remaining formals have right form
3243 while Present
(Formal
) loop
3244 if Ekind
(Formal
) /= E_In_Parameter
then
3246 ("optional formal& is not of mode in!",
3247 Arg_First_Optional_Parameter
, Formal
);
3250 Dval
:= Default_Value
(Formal
);
3254 ("optional formal& does not have default value!",
3255 Arg_First_Optional_Parameter
, Formal
);
3257 elsif Compile_Time_Known_Value_Or_Aggr
(Dval
) then
3262 ("default value for optional formal& is non-static!",
3263 Arg_First_Optional_Parameter
, Formal
);
3267 Set_Is_Optional_Parameter
(Formal
);
3268 Next_Formal
(Formal
);
3271 end Process_Extended_Import_Export_Subprogram_Pragma
;
3273 --------------------------
3274 -- Process_Generic_List --
3275 --------------------------
3277 procedure Process_Generic_List
is
3283 Check_No_Identifiers
;
3284 Check_At_Least_N_Arguments
(1);
3287 while Present
(Arg
) loop
3288 Exp
:= Expression
(Arg
);
3291 if not Is_Entity_Name
(Exp
)
3293 (not Is_Generic_Instance
(Entity
(Exp
))
3295 not Is_Generic_Unit
(Entity
(Exp
)))
3298 ("pragma% argument must be name of generic unit/instance",
3304 end Process_Generic_List
;
3306 ---------------------------------
3307 -- Process_Import_Or_Interface --
3308 ---------------------------------
3310 procedure Process_Import_Or_Interface
is
3316 Process_Convention
(C
, Def_Id
);
3317 Kill_Size_Check_Code
(Def_Id
);
3318 Note_Possible_Modification
(Expression
(Arg2
), Sure
=> False);
3320 if Ekind
(Def_Id
) = E_Variable
3322 Ekind
(Def_Id
) = E_Constant
3324 -- We do not permit Import to apply to a renaming declaration
3326 if Present
(Renamed_Object
(Def_Id
)) then
3328 ("pragma% not allowed for object renaming", Arg2
);
3330 -- User initialization is not allowed for imported object, but
3331 -- the object declaration may contain a default initialization,
3332 -- that will be discarded. Note that an explicit initialization
3333 -- only counts if it comes from source, otherwise it is simply
3334 -- the code generator making an implicit initialization explicit.
3336 elsif Present
(Expression
(Parent
(Def_Id
)))
3337 and then Comes_From_Source
(Expression
(Parent
(Def_Id
)))
3339 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3341 ("no initialization allowed for declaration of& #",
3342 "\imported entities cannot be initialized (RM B.1(24))",
3346 Set_Imported
(Def_Id
);
3347 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3349 -- Note that we do not set Is_Public here. That's because we
3350 -- only want to set if if there is no address clause, and we
3351 -- don't know that yet, so we delay that processing till
3354 -- pragma Import completes deferred constants
3356 if Ekind
(Def_Id
) = E_Constant
then
3357 Set_Has_Completion
(Def_Id
);
3360 -- It is not possible to import a constant of an unconstrained
3361 -- array type (e.g. string) because there is no simple way to
3362 -- write a meaningful subtype for it.
3364 if Is_Array_Type
(Etype
(Def_Id
))
3365 and then not Is_Constrained
(Etype
(Def_Id
))
3368 ("imported constant& must have a constrained subtype",
3373 elsif Is_Subprogram
(Def_Id
)
3374 or else Is_Generic_Subprogram
(Def_Id
)
3376 -- If the name is overloaded, pragma applies to all of the
3377 -- denoted entities in the same declarative part.
3380 while Present
(Hom_Id
) loop
3381 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
3383 -- Ignore inherited subprograms because the pragma will
3384 -- apply to the parent operation, which is the one called.
3386 if Is_Overloadable
(Def_Id
)
3387 and then Present
(Alias
(Def_Id
))
3391 -- If it is not a subprogram, it must be in an outer
3392 -- scope and pragma does not apply.
3394 elsif not Is_Subprogram
(Def_Id
)
3395 and then not Is_Generic_Subprogram
(Def_Id
)
3399 -- Verify that the homonym is in the same declarative
3400 -- part (not just the same scope).
3402 elsif Parent
(Unit_Declaration_Node
(Def_Id
)) /= Parent
(N
)
3403 and then Nkind
(Parent
(N
)) /= N_Compilation_Unit_Aux
3408 Set_Imported
(Def_Id
);
3410 -- Special processing for Convention_Intrinsic
3412 if C
= Convention_Intrinsic
then
3414 -- Link_Name argument not allowed for intrinsic
3417 and then Chars
(Arg3
) = Name_Link_Name
3422 if Present
(Arg4
) then
3424 ("Link_Name argument not allowed for " &
3429 Set_Is_Intrinsic_Subprogram
(Def_Id
);
3431 -- If no external name is present, then check that
3432 -- this is a valid intrinsic subprogram. If an external
3433 -- name is present, then this is handled by the back end.
3436 Check_Intrinsic_Subprogram
(Def_Id
, Expression
(Arg2
));
3440 -- All interfaced procedures need an external symbol
3441 -- created for them since they are always referenced
3442 -- from another object file.
3444 Set_Is_Public
(Def_Id
);
3446 -- Verify that the subprogram does not have a completion
3447 -- through a renaming declaration. For other completions
3448 -- the pragma appears as a too late representation.
3451 Decl
: constant Node_Id
:= Unit_Declaration_Node
(Def_Id
);
3455 and then Nkind
(Decl
) = N_Subprogram_Declaration
3456 and then Present
(Corresponding_Body
(Decl
))
3459 (Unit_Declaration_Node
3460 (Corresponding_Body
(Decl
))) =
3461 N_Subprogram_Renaming_Declaration
3463 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3465 ("cannot import&, renaming already provided for " &
3466 "declaration #", N
, Def_Id
);
3470 Set_Has_Completion
(Def_Id
);
3471 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3474 if Is_Compilation_Unit
(Hom_Id
) then
3476 -- Its possible homonyms are not affected by the pragma.
3477 -- Such homonyms might be present in the context of other
3478 -- units being compiled.
3483 Hom_Id
:= Homonym
(Hom_Id
);
3487 -- When the convention is Java or CIL, we also allow Import to be
3488 -- given for packages, generic packages, exceptions, and record
3491 elsif (C
= Convention_Java
or else C
= Convention_CIL
)
3493 (Ekind
(Def_Id
) = E_Package
3494 or else Ekind
(Def_Id
) = E_Generic_Package
3495 or else Ekind
(Def_Id
) = E_Exception
3496 or else Nkind
(Parent
(Def_Id
)) = N_Component_Declaration
)
3498 Set_Imported
(Def_Id
);
3499 Set_Is_Public
(Def_Id
);
3500 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
3502 -- Import a CPP class
3504 elsif Is_Record_Type
(Def_Id
)
3505 and then C
= Convention_CPP
3507 if not Is_Tagged_Type
(Def_Id
) then
3508 Error_Msg_Sloc
:= Sloc
(Def_Id
);
3509 Error_Pragma_Arg
("imported 'C'P'P type must be tagged", Arg2
);
3512 -- Types treated as CPP classes are treated as limited, but we
3513 -- don't require them to be declared this way. A warning is
3514 -- issued to encourage the user to declare them as limited.
3515 -- This is not an error, for compatibility reasons, because
3516 -- these types have been supported this way for some time.
3518 if not Is_Limited_Type
(Def_Id
) then
3520 ("imported 'C'P'P type should be " &
3521 "explicitly declared limited?",
3522 Get_Pragma_Arg
(Arg2
));
3524 ("\type will be considered limited",
3525 Get_Pragma_Arg
(Arg2
));
3528 Set_Is_CPP_Class
(Def_Id
);
3529 Set_Is_Limited_Record
(Def_Id
);
3534 ("second argument of pragma% must be object or subprogram",
3538 -- If this pragma applies to a compilation unit, then the unit,
3539 -- which is a subprogram, does not require (or allow) a body.
3540 -- We also do not need to elaborate imported procedures.
3542 if Nkind
(Parent
(N
)) = N_Compilation_Unit_Aux
then
3544 Cunit
: constant Node_Id
:= Parent
(Parent
(N
));
3546 Set_Body_Required
(Cunit
, False);
3549 end Process_Import_Or_Interface
;
3551 --------------------
3552 -- Process_Inline --
3553 --------------------
3555 procedure Process_Inline
(Active
: Boolean) is
3561 Effective
: Boolean := False;
3563 procedure Make_Inline
(Subp
: Entity_Id
);
3564 -- Subp is the defining unit name of the subprogram
3565 -- declaration. Set the flag, as well as the flag in the
3566 -- corresponding body, if there is one present.
3568 procedure Set_Inline_Flags
(Subp
: Entity_Id
);
3569 -- Sets Is_Inlined and Has_Pragma_Inline flags for Subp and also
3570 -- Has_Pragma_Inline_Always for the Inline_Always case.
3572 function Inlining_Not_Possible
(Subp
: Entity_Id
) return Boolean;
3573 -- Returns True if it can be determined at this stage that inlining
3574 -- is not possible, for example if the body is available and contains
3575 -- exception handlers, we prevent inlining, since otherwise we can
3576 -- get undefined symbols at link time. This function also emits a
3577 -- warning if front-end inlining is enabled and the pragma appears
3580 -- ??? is business with link symbols still valid, or does it relate
3581 -- to front end ZCX which is being phased out ???
3583 ---------------------------
3584 -- Inlining_Not_Possible --
3585 ---------------------------
3587 function Inlining_Not_Possible
(Subp
: Entity_Id
) return Boolean is
3588 Decl
: constant Node_Id
:= Unit_Declaration_Node
(Subp
);
3592 if Nkind
(Decl
) = N_Subprogram_Body
then
3593 Stats
:= Handled_Statement_Sequence
(Decl
);
3594 return Present
(Exception_Handlers
(Stats
))
3595 or else Present
(At_End_Proc
(Stats
));
3597 elsif Nkind
(Decl
) = N_Subprogram_Declaration
3598 and then Present
(Corresponding_Body
(Decl
))
3600 if Front_End_Inlining
3601 and then Analyzed
(Corresponding_Body
(Decl
))
3603 Error_Msg_N
("pragma appears too late, ignored?", N
);
3606 -- If the subprogram is a renaming as body, the body is
3607 -- just a call to the renamed subprogram, and inlining is
3608 -- trivially possible.
3611 Nkind
(Unit_Declaration_Node
(Corresponding_Body
(Decl
))) =
3612 N_Subprogram_Renaming_Declaration
3618 Handled_Statement_Sequence
3619 (Unit_Declaration_Node
(Corresponding_Body
(Decl
)));
3622 Present
(Exception_Handlers
(Stats
))
3623 or else Present
(At_End_Proc
(Stats
));
3627 -- If body is not available, assume the best, the check is
3628 -- performed again when compiling enclosing package bodies.
3632 end Inlining_Not_Possible
;
3638 procedure Make_Inline
(Subp
: Entity_Id
) is
3639 Kind
: constant Entity_Kind
:= Ekind
(Subp
);
3640 Inner_Subp
: Entity_Id
:= Subp
;
3643 -- Ignore if bad type, avoid cascaded error
3645 if Etype
(Subp
) = Any_Type
then
3649 -- Ignore if all inlining is suppressed
3651 elsif Suppress_All_Inlining
then
3655 -- If inlining is not possible, for now do not treat as an error
3657 elsif Inlining_Not_Possible
(Subp
) then
3661 -- Here we have a candidate for inlining, but we must exclude
3662 -- derived operations. Otherwise we would end up trying to inline
3663 -- a phantom declaration, and the result would be to drag in a
3664 -- body which has no direct inlining associated with it. That
3665 -- would not only be inefficient but would also result in the
3666 -- backend doing cross-unit inlining in cases where it was
3667 -- definitely inappropriate to do so.
3669 -- However, a simple Comes_From_Source test is insufficient, since
3670 -- we do want to allow inlining of generic instances which also do
3671 -- not come from source. We also need to recognize specs
3672 -- generated by the front-end for bodies that carry the pragma.
3673 -- Finally, predefined operators do not come from source but are
3674 -- not inlineable either.
3676 elsif Is_Generic_Instance
(Subp
)
3677 or else Nkind
(Parent
(Parent
(Subp
))) = N_Subprogram_Declaration
3681 elsif not Comes_From_Source
(Subp
)
3682 and then Scope
(Subp
) /= Standard_Standard
3688 -- The referenced entity must either be the enclosing entity,
3689 -- or an entity declared within the current open scope.
3691 if Present
(Scope
(Subp
))
3692 and then Scope
(Subp
) /= Current_Scope
3693 and then Subp
/= Current_Scope
3696 ("argument of% must be entity in current scope", Assoc
);
3700 -- Processing for procedure, operator or function.
3701 -- If subprogram is aliased (as for an instance) indicate
3702 -- that the renamed entity (if declared in the same unit)
3705 if Is_Subprogram
(Subp
) then
3706 while Present
(Alias
(Inner_Subp
)) loop
3707 Inner_Subp
:= Alias
(Inner_Subp
);
3710 if In_Same_Source_Unit
(Subp
, Inner_Subp
) then
3711 Set_Inline_Flags
(Inner_Subp
);
3713 Decl
:= Parent
(Parent
(Inner_Subp
));
3715 if Nkind
(Decl
) = N_Subprogram_Declaration
3716 and then Present
(Corresponding_Body
(Decl
))
3718 Set_Inline_Flags
(Corresponding_Body
(Decl
));
3724 -- For a generic subprogram set flag as well, for use at
3725 -- the point of instantiation, to determine whether the
3726 -- body should be generated.
3728 elsif Is_Generic_Subprogram
(Subp
) then
3729 Set_Inline_Flags
(Subp
);
3732 -- Literals are by definition inlined
3734 elsif Kind
= E_Enumeration_Literal
then
3737 -- Anything else is an error
3741 ("expect subprogram name for pragma%", Assoc
);
3745 ----------------------
3746 -- Set_Inline_Flags --
3747 ----------------------
3749 procedure Set_Inline_Flags
(Subp
: Entity_Id
) is
3752 Set_Is_Inlined
(Subp
, True);
3755 if not Has_Pragma_Inline
(Subp
) then
3756 Set_Has_Pragma_Inline
(Subp
);
3760 if Prag_Id
= Pragma_Inline_Always
then
3761 Set_Has_Pragma_Inline_Always
(Subp
);
3763 end Set_Inline_Flags
;
3765 -- Start of processing for Process_Inline
3768 Check_No_Identifiers
;
3769 Check_At_Least_N_Arguments
(1);
3772 Inline_Processing_Required
:= True;
3776 while Present
(Assoc
) loop
3777 Subp_Id
:= Expression
(Assoc
);
3781 if Is_Entity_Name
(Subp_Id
) then
3782 Subp
:= Entity
(Subp_Id
);
3784 if Subp
= Any_Id
then
3786 -- If previous error, avoid cascaded errors
3794 while Present
(Homonym
(Subp
))
3795 and then Scope
(Homonym
(Subp
)) = Current_Scope
3797 Make_Inline
(Homonym
(Subp
));
3798 Subp
:= Homonym
(Subp
);
3805 ("inappropriate argument for pragma%", Assoc
);
3808 and then Warn_On_Redundant_Constructs
3809 and then not Suppress_All_Inlining
3811 if Inlining_Not_Possible
(Subp
) then
3813 ("pragma Inline for& is ignored?", N
, Entity
(Subp_Id
));
3816 ("pragma Inline for& is redundant?", N
, Entity
(Subp_Id
));
3824 ----------------------------
3825 -- Process_Interface_Name --
3826 ----------------------------
3828 procedure Process_Interface_Name
3829 (Subprogram_Def
: Entity_Id
;
3835 String_Val
: String_Id
;
3837 procedure Check_Form_Of_Interface_Name
(SN
: Node_Id
);
3838 -- SN is a string literal node for an interface name. This routine
3839 -- performs some minimal checks that the name is reasonable. In
3840 -- particular that no spaces or other obviously incorrect characters
3841 -- appear. This is only a warning, since any characters are allowed.
3843 ----------------------------------
3844 -- Check_Form_Of_Interface_Name --
3845 ----------------------------------
3847 procedure Check_Form_Of_Interface_Name
(SN
: Node_Id
) is
3848 S
: constant String_Id
:= Strval
(Expr_Value_S
(SN
));
3849 SL
: constant Nat
:= String_Length
(S
);
3854 Error_Msg_N
("interface name cannot be null string", SN
);
3857 for J
in 1 .. SL
loop
3858 C
:= Get_String_Char
(S
, J
);
3860 if Warn_On_Export_Import
3862 (not In_Character_Range
(C
)
3863 or else (Get_Character
(C
) = ' '
3864 and then VM_Target
/= CLI_Target
)
3865 or else Get_Character
(C
) = ',')
3868 ("?interface name contains illegal character", SN
);
3871 end Check_Form_Of_Interface_Name
;
3873 -- Start of processing for Process_Interface_Name
3876 if No
(Link_Arg
) then
3877 if No
(Ext_Arg
) then
3878 if VM_Target
= CLI_Target
3879 and then Ekind
(Subprogram_Def
) = E_Package
3880 and then Nkind
(Parent
(Subprogram_Def
)) =
3881 N_Package_Specification
3882 and then Present
(Generic_Parent
(Parent
(Subprogram_Def
)))
3887 (Generic_Parent
(Parent
(Subprogram_Def
))));
3892 elsif Chars
(Ext_Arg
) = Name_Link_Name
then
3894 Link_Nam
:= Expression
(Ext_Arg
);
3897 Check_Optional_Identifier
(Ext_Arg
, Name_External_Name
);
3898 Ext_Nam
:= Expression
(Ext_Arg
);
3903 Check_Optional_Identifier
(Ext_Arg
, Name_External_Name
);
3904 Check_Optional_Identifier
(Link_Arg
, Name_Link_Name
);
3905 Ext_Nam
:= Expression
(Ext_Arg
);
3906 Link_Nam
:= Expression
(Link_Arg
);
3909 -- Check expressions for external name and link name are static
3911 if Present
(Ext_Nam
) then
3912 Check_Arg_Is_Static_Expression
(Ext_Nam
, Standard_String
);
3913 Check_Form_Of_Interface_Name
(Ext_Nam
);
3915 -- Verify that the external name is not the name of a local
3916 -- entity, which would hide the imported one and lead to
3917 -- run-time surprises. The problem can only arise for entities
3918 -- declared in a package body (otherwise the external name is
3919 -- fully qualified and won't conflict).
3927 if Prag_Id
= Pragma_Import
then
3928 String_To_Name_Buffer
(Strval
(Expr_Value_S
(Ext_Nam
)));
3930 E
:= Entity_Id
(Get_Name_Table_Info
(Nam
));
3932 if Nam
/= Chars
(Subprogram_Def
)
3933 and then Present
(E
)
3934 and then not Is_Overloadable
(E
)
3935 and then Is_Immediately_Visible
(E
)
3936 and then not Is_Imported
(E
)
3937 and then Ekind
(Scope
(E
)) = E_Package
3940 while Present
(Par
) loop
3941 if Nkind
(Par
) = N_Package_Body
then
3942 Error_Msg_Sloc
:= Sloc
(E
);
3944 ("imported entity is hidden by & declared#",
3949 Par
:= Parent
(Par
);
3956 if Present
(Link_Nam
) then
3957 Check_Arg_Is_Static_Expression
(Link_Nam
, Standard_String
);
3958 Check_Form_Of_Interface_Name
(Link_Nam
);
3961 -- If there is no link name, just set the external name
3963 if No
(Link_Nam
) then
3964 Link_Nam
:= Adjust_External_Name_Case
(Expr_Value_S
(Ext_Nam
));
3966 -- For the Link_Name case, the given literal is preceded by an
3967 -- asterisk, which indicates to GCC that the given name should
3968 -- be taken literally, and in particular that no prepending of
3969 -- underlines should occur, even in systems where this is the
3975 if VM_Target
= No_VM
then
3976 Store_String_Char
(Get_Char_Code
('*'));
3979 String_Val
:= Strval
(Expr_Value_S
(Link_Nam
));
3980 Store_String_Chars
(String_Val
);
3982 Make_String_Literal
(Sloc
(Link_Nam
),
3983 Strval
=> End_String
);
3986 Set_Encoded_Interface_Name
3987 (Get_Base_Subprogram
(Subprogram_Def
), Link_Nam
);
3988 Check_Duplicated_Export_Name
(Link_Nam
);
3989 end Process_Interface_Name
;
3991 -----------------------------------------
3992 -- Process_Interrupt_Or_Attach_Handler --
3993 -----------------------------------------
3995 procedure Process_Interrupt_Or_Attach_Handler
is
3996 Arg1_X
: constant Node_Id
:= Expression
(Arg1
);
3997 Handler_Proc
: constant Entity_Id
:= Entity
(Arg1_X
);
3998 Proc_Scope
: constant Entity_Id
:= Scope
(Handler_Proc
);
4001 Set_Is_Interrupt_Handler
(Handler_Proc
);
4003 -- If the pragma is not associated with a handler procedure
4004 -- within a protected type, then it must be for a nonprotected
4005 -- procedure for the AAMP target, in which case we don't
4006 -- associate a representation item with the procedure's scope.
4008 if Ekind
(Proc_Scope
) = E_Protected_Type
then
4009 if Prag_Id
= Pragma_Interrupt_Handler
4011 Prag_Id
= Pragma_Attach_Handler
4013 Record_Rep_Item
(Proc_Scope
, N
);
4016 end Process_Interrupt_Or_Attach_Handler
;
4018 --------------------------------------------------
4019 -- Process_Restrictions_Or_Restriction_Warnings --
4020 --------------------------------------------------
4022 -- Note: some of the simple identifier cases were handled in par-prag,
4023 -- but it is harmless (and more straightforward) to simply handle all
4024 -- cases here, even if it means we repeat a bit of work in some cases.
4026 procedure Process_Restrictions_Or_Restriction_Warnings
4030 R_Id
: Restriction_Id
;
4035 procedure Check_Unit_Name
(N
: Node_Id
);
4036 -- Checks unit name parameter for No_Dependence. Returns if it has
4037 -- an appropriate form, otherwise raises pragma argument error.
4039 ---------------------
4040 -- Check_Unit_Name --
4041 ---------------------
4043 procedure Check_Unit_Name
(N
: Node_Id
) is
4045 if Nkind
(N
) = N_Selected_Component
then
4046 Check_Unit_Name
(Prefix
(N
));
4047 Check_Unit_Name
(Selector_Name
(N
));
4049 elsif Nkind
(N
) = N_Identifier
then
4054 ("wrong form for unit name for No_Dependence", N
);
4056 end Check_Unit_Name
;
4058 -- Start of processing for Process_Restrictions_Or_Restriction_Warnings
4061 Check_Ada_83_Warning
;
4062 Check_At_Least_N_Arguments
(1);
4063 Check_Valid_Configuration_Pragma
;
4066 while Present
(Arg
) loop
4068 Expr
:= Expression
(Arg
);
4070 -- Case of no restriction identifier present
4072 if Id
= No_Name
then
4073 if Nkind
(Expr
) /= N_Identifier
then
4075 ("invalid form for restriction", Arg
);
4080 (Process_Restriction_Synonyms
(Expr
));
4082 if R_Id
not in All_Boolean_Restrictions
then
4083 Error_Msg_Name_1
:= Pname
;
4085 ("invalid restriction identifier&", Get_Pragma_Arg
(Arg
));
4087 -- Check for possible misspelling
4089 for J
in Restriction_Id
loop
4091 Rnm
: constant String := Restriction_Id
'Image (J
);
4094 Name_Buffer
(1 .. Rnm
'Length) := Rnm
;
4095 Name_Len
:= Rnm
'Length;
4096 Set_Casing
(All_Lower_Case
);
4098 if Is_Bad_Spelling_Of
(Chars
(Expr
), Name_Enter
) then
4100 (Identifier_Casing
(Current_Source_File
));
4101 Error_Msg_String
(1 .. Rnm
'Length) :=
4102 Name_Buffer
(1 .. Name_Len
);
4103 Error_Msg_Strlen
:= Rnm
'Length;
4105 ("\possible misspelling of ""~""",
4106 Get_Pragma_Arg
(Arg
));
4115 if Implementation_Restriction
(R_Id
) then
4116 Check_Restriction
(No_Implementation_Restrictions
, Arg
);
4119 -- If this is a warning, then set the warning unless we already
4120 -- have a real restriction active (we never want a warning to
4121 -- override a real restriction).
4124 if not Restriction_Active
(R_Id
) then
4125 Set_Restriction
(R_Id
, N
);
4126 Restriction_Warnings
(R_Id
) := True;
4129 -- If real restriction case, then set it and make sure that the
4130 -- restriction warning flag is off, since a real restriction
4131 -- always overrides a warning.
4134 Set_Restriction
(R_Id
, N
);
4135 Restriction_Warnings
(R_Id
) := False;
4138 -- A very special case that must be processed here: pragma
4139 -- Restrictions (No_Exceptions) turns off all run-time
4140 -- checking. This is a bit dubious in terms of the formal
4141 -- language definition, but it is what is intended by RM
4142 -- H.4(12). Restriction_Warnings never affects generated code
4143 -- so this is done only in the real restriction case.
4145 if R_Id
= No_Exceptions
and then not Warn
then
4146 Scope_Suppress
:= (others => True);
4149 -- Case of No_Dependence => unit-name. Note that the parser
4150 -- already made the necessary entry in the No_Dependence table.
4152 elsif Id
= Name_No_Dependence
then
4153 Check_Unit_Name
(Expr
);
4155 -- All other cases of restriction identifier present
4158 R_Id
:= Get_Restriction_Id
(Process_Restriction_Synonyms
(Arg
));
4159 Analyze_And_Resolve
(Expr
, Any_Integer
);
4161 if R_Id
not in All_Parameter_Restrictions
then
4163 ("invalid restriction parameter identifier", Arg
);
4165 elsif not Is_OK_Static_Expression
(Expr
) then
4166 Flag_Non_Static_Expr
4167 ("value must be static expression!", Expr
);
4170 elsif not Is_Integer_Type
(Etype
(Expr
))
4171 or else Expr_Value
(Expr
) < 0
4174 ("value must be non-negative integer", Arg
);
4177 -- Restriction pragma is active
4179 Val
:= Expr_Value
(Expr
);
4181 if not UI_Is_In_Int_Range
(Val
) then
4183 ("pragma ignored, value too large?", Arg
);
4186 -- Warning case. If the real restriction is active, then we
4187 -- ignore the request, since warning never overrides a real
4188 -- restriction. Otherwise we set the proper warning. Note that
4189 -- this circuit sets the warning again if it is already set,
4190 -- which is what we want, since the constant may have changed.
4193 if not Restriction_Active
(R_Id
) then
4195 (R_Id
, N
, Integer (UI_To_Int
(Val
)));
4196 Restriction_Warnings
(R_Id
) := True;
4199 -- Real restriction case, set restriction and make sure warning
4200 -- flag is off since real restriction always overrides warning.
4203 Set_Restriction
(R_Id
, N
, Integer (UI_To_Int
(Val
)));
4204 Restriction_Warnings
(R_Id
) := False;
4210 end Process_Restrictions_Or_Restriction_Warnings
;
4212 ---------------------------------
4213 -- Process_Suppress_Unsuppress --
4214 ---------------------------------
4216 -- Note: this procedure makes entries in the check suppress data
4217 -- structures managed by Sem. See spec of package Sem for full
4218 -- details on how we handle recording of check suppression.
4220 procedure Process_Suppress_Unsuppress
(Suppress_Case
: Boolean) is
4225 In_Package_Spec
: constant Boolean :=
4226 (Ekind
(Current_Scope
) = E_Package
4228 Ekind
(Current_Scope
) = E_Generic_Package
)
4229 and then not In_Package_Body
(Current_Scope
);
4231 procedure Suppress_Unsuppress_Echeck
(E
: Entity_Id
; C
: Check_Id
);
4232 -- Used to suppress a single check on the given entity
4234 --------------------------------
4235 -- Suppress_Unsuppress_Echeck --
4236 --------------------------------
4238 procedure Suppress_Unsuppress_Echeck
(E
: Entity_Id
; C
: Check_Id
) is
4240 Set_Checks_May_Be_Suppressed
(E
);
4242 if In_Package_Spec
then
4243 Push_Global_Suppress_Stack_Entry
4246 Suppress
=> Suppress_Case
);
4249 Push_Local_Suppress_Stack_Entry
4252 Suppress
=> Suppress_Case
);
4255 -- If this is a first subtype, and the base type is distinct,
4256 -- then also set the suppress flags on the base type.
4258 if Is_First_Subtype
(E
)
4259 and then Etype
(E
) /= E
4261 Suppress_Unsuppress_Echeck
(Etype
(E
), C
);
4263 end Suppress_Unsuppress_Echeck
;
4265 -- Start of processing for Process_Suppress_Unsuppress
4268 -- Suppress/Unsuppress can appear as a configuration pragma,
4269 -- or in a declarative part or a package spec (RM 11.5(5))
4271 if not Is_Configuration_Pragma
then
4272 Check_Is_In_Decl_Part_Or_Package_Spec
;
4275 Check_At_Least_N_Arguments
(1);
4276 Check_At_Most_N_Arguments
(2);
4277 Check_No_Identifier
(Arg1
);
4278 Check_Arg_Is_Identifier
(Arg1
);
4280 C
:= Get_Check_Id
(Chars
(Expression
(Arg1
)));
4282 if C
= No_Check_Id
then
4284 ("argument of pragma% is not valid check name", Arg1
);
4287 if not Suppress_Case
4288 and then (C
= All_Checks
or else C
= Overflow_Check
)
4290 Opt
.Overflow_Checks_Unsuppressed
:= True;
4293 if Arg_Count
= 1 then
4295 -- Make an entry in the local scope suppress table. This is the
4296 -- table that directly shows the current value of the scope
4297 -- suppress check for any check id value.
4299 if C
= All_Checks
then
4301 -- For All_Checks, we set all specific predefined checks with
4302 -- the exception of Elaboration_Check, which is handled
4303 -- specially because of not wanting All_Checks to have the
4304 -- effect of deactivating static elaboration order processing.
4306 for J
in Scope_Suppress
'Range loop
4307 if J
/= Elaboration_Check
then
4308 Scope_Suppress
(J
) := Suppress_Case
;
4312 -- If not All_Checks, and predefined check, then set appropriate
4313 -- scope entry. Note that we will set Elaboration_Check if this
4314 -- is explicitly specified.
4316 elsif C
in Predefined_Check_Id
then
4317 Scope_Suppress
(C
) := Suppress_Case
;
4320 -- Also make an entry in the Local_Entity_Suppress table
4322 Push_Local_Suppress_Stack_Entry
4325 Suppress
=> Suppress_Case
);
4327 -- Case of two arguments present, where the check is suppressed for
4328 -- a specified entity (given as the second argument of the pragma)
4331 Check_Optional_Identifier
(Arg2
, Name_On
);
4332 E_Id
:= Expression
(Arg2
);
4335 if not Is_Entity_Name
(E_Id
) then
4337 ("second argument of pragma% must be entity name", Arg2
);
4346 -- Enforce RM 11.5(7) which requires that for a pragma that
4347 -- appears within a package spec, the named entity must be
4348 -- within the package spec. We allow the package name itself
4349 -- to be mentioned since that makes sense, although it is not
4350 -- strictly allowed by 11.5(7).
4353 and then E
/= Current_Scope
4354 and then Scope
(E
) /= Current_Scope
4357 ("entity in pragma% is not in package spec (RM 11.5(7))",
4361 -- Loop through homonyms. As noted below, in the case of a package
4362 -- spec, only homonyms within the package spec are considered.
4365 Suppress_Unsuppress_Echeck
(E
, C
);
4367 if Is_Generic_Instance
(E
)
4368 and then Is_Subprogram
(E
)
4369 and then Present
(Alias
(E
))
4371 Suppress_Unsuppress_Echeck
(Alias
(E
), C
);
4374 -- Move to next homonym
4379 -- If we are within a package specification, the
4380 -- pragma only applies to homonyms in the same scope.
4382 exit when In_Package_Spec
4383 and then Scope
(E
) /= Current_Scope
;
4386 end Process_Suppress_Unsuppress
;
4392 procedure Set_Exported
(E
: Entity_Id
; Arg
: Node_Id
) is
4394 if Is_Imported
(E
) then
4396 ("cannot export entity& that was previously imported", Arg
);
4398 elsif Present
(Address_Clause
(E
)) then
4400 ("cannot export entity& that has an address clause", Arg
);
4403 Set_Is_Exported
(E
);
4405 -- Generate a reference for entity explicitly, because the
4406 -- identifier may be overloaded and name resolution will not
4409 Generate_Reference
(E
, Arg
);
4411 -- Deal with exporting non-library level entity
4413 if not Is_Library_Level_Entity
(E
) then
4415 -- Not allowed at all for subprograms
4417 if Is_Subprogram
(E
) then
4418 Error_Pragma_Arg
("local subprogram& cannot be exported", Arg
);
4420 -- Otherwise set public and statically allocated
4424 Set_Is_Statically_Allocated
(E
);
4426 -- Warn if the corresponding W flag is set and the pragma
4427 -- comes from source. The latter may not be true e.g. on
4428 -- VMS where we expand export pragmas for exception codes
4429 -- associated with imported or exported exceptions. We do
4430 -- not want to generate a warning for something that the
4431 -- user did not write.
4433 if Warn_On_Export_Import
4434 and then Comes_From_Source
(Arg
)
4437 ("?& has been made static as a result of Export", Arg
, E
);
4439 ("\this usage is non-standard and non-portable", Arg
);
4444 if Warn_On_Export_Import
and then Is_Type
(E
) then
4446 ("exporting a type has no effect?", Arg
, E
);
4449 if Warn_On_Export_Import
and Inside_A_Generic
then
4451 ("all instances of& will have the same external name?", Arg
, E
);
4455 ----------------------------------------------
4456 -- Set_Extended_Import_Export_External_Name --
4457 ----------------------------------------------
4459 procedure Set_Extended_Import_Export_External_Name
4460 (Internal_Ent
: Entity_Id
;
4461 Arg_External
: Node_Id
)
4463 Old_Name
: constant Node_Id
:= Interface_Name
(Internal_Ent
);
4467 if No
(Arg_External
) then
4471 Check_Arg_Is_External_Name
(Arg_External
);
4473 if Nkind
(Arg_External
) = N_String_Literal
then
4474 if String_Length
(Strval
(Arg_External
)) = 0 then
4477 New_Name
:= Adjust_External_Name_Case
(Arg_External
);
4480 elsif Nkind
(Arg_External
) = N_Identifier
then
4481 New_Name
:= Get_Default_External_Name
(Arg_External
);
4483 -- Check_Arg_Is_External_Name should let through only
4484 -- identifiers and string literals or static string
4485 -- expressions (which are folded to string literals).
4488 raise Program_Error
;
4491 -- If we already have an external name set (by a prior normal
4492 -- Import or Export pragma), then the external names must match
4494 if Present
(Interface_Name
(Internal_Ent
)) then
4495 Check_Matching_Internal_Names
: declare
4496 S1
: constant String_Id
:= Strval
(Old_Name
);
4497 S2
: constant String_Id
:= Strval
(New_Name
);
4500 -- Called if names do not match
4506 procedure Mismatch
is
4508 Error_Msg_Sloc
:= Sloc
(Old_Name
);
4510 ("external name does not match that given #",
4514 -- Start of processing for Check_Matching_Internal_Names
4517 if String_Length
(S1
) /= String_Length
(S2
) then
4521 for J
in 1 .. String_Length
(S1
) loop
4522 if Get_String_Char
(S1
, J
) /= Get_String_Char
(S2
, J
) then
4527 end Check_Matching_Internal_Names
;
4529 -- Otherwise set the given name
4532 Set_Encoded_Interface_Name
(Internal_Ent
, New_Name
);
4533 Check_Duplicated_Export_Name
(New_Name
);
4535 end Set_Extended_Import_Export_External_Name
;
4541 procedure Set_Imported
(E
: Entity_Id
) is
4543 -- Error message if already imported or exported
4545 if Is_Exported
(E
) or else Is_Imported
(E
) then
4546 if Is_Exported
(E
) then
4547 Error_Msg_NE
("entity& was previously exported", N
, E
);
4549 Error_Msg_NE
("entity& was previously imported", N
, E
);
4552 Error_Msg_Name_1
:= Pname
;
4554 ("\(pragma% applies to all previous entities)", N
);
4556 Error_Msg_Sloc
:= Sloc
(E
);
4557 Error_Msg_NE
("\import not allowed for& declared#", N
, E
);
4559 -- Here if not previously imported or exported, OK to import
4562 Set_Is_Imported
(E
);
4564 -- If the entity is an object that is not at the library
4565 -- level, then it is statically allocated. We do not worry
4566 -- about objects with address clauses in this context since
4567 -- they are not really imported in the linker sense.
4570 and then not Is_Library_Level_Entity
(E
)
4571 and then No
(Address_Clause
(E
))
4573 Set_Is_Statically_Allocated
(E
);
4578 -------------------------
4579 -- Set_Mechanism_Value --
4580 -------------------------
4582 -- Note: the mechanism name has not been analyzed (and cannot indeed
4583 -- be analyzed, since it is semantic nonsense), so we get it in the
4584 -- exact form created by the parser.
4586 procedure Set_Mechanism_Value
(Ent
: Entity_Id
; Mech_Name
: Node_Id
) is
4590 procedure Bad_Class
;
4591 -- Signal bad descriptor class name
4593 procedure Bad_Mechanism
;
4594 -- Signal bad mechanism name
4600 procedure Bad_Class
is
4602 Error_Pragma_Arg
("unrecognized descriptor class name", Class
);
4605 -------------------------
4606 -- Bad_Mechanism_Value --
4607 -------------------------
4609 procedure Bad_Mechanism
is
4611 Error_Pragma_Arg
("unrecognized mechanism name", Mech_Name
);
4614 -- Start of processing for Set_Mechanism_Value
4617 if Mechanism
(Ent
) /= Default_Mechanism
then
4619 ("mechanism for & has already been set", Mech_Name
, Ent
);
4622 -- MECHANISM_NAME ::= value | reference | descriptor
4624 if Nkind
(Mech_Name
) = N_Identifier
then
4625 if Chars
(Mech_Name
) = Name_Value
then
4626 Set_Mechanism
(Ent
, By_Copy
);
4629 elsif Chars
(Mech_Name
) = Name_Reference
then
4630 Set_Mechanism
(Ent
, By_Reference
);
4633 elsif Chars
(Mech_Name
) = Name_Descriptor
then
4634 Check_VMS
(Mech_Name
);
4635 Set_Mechanism
(Ent
, By_Descriptor
);
4638 elsif Chars
(Mech_Name
) = Name_Copy
then
4640 ("bad mechanism name, Value assumed", Mech_Name
);
4646 -- MECHANISM_NAME ::= descriptor (CLASS_NAME)
4647 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
4649 -- Note: this form is parsed as an indexed component
4651 elsif Nkind
(Mech_Name
) = N_Indexed_Component
then
4652 Class
:= First
(Expressions
(Mech_Name
));
4654 if Nkind
(Prefix
(Mech_Name
)) /= N_Identifier
4655 or else Chars
(Prefix
(Mech_Name
)) /= Name_Descriptor
4656 or else Present
(Next
(Class
))
4661 -- MECHANISM_NAME ::= descriptor (Class => CLASS_NAME)
4662 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
4664 -- Note: this form is parsed as a function call
4666 elsif Nkind
(Mech_Name
) = N_Function_Call
then
4668 Param
:= First
(Parameter_Associations
(Mech_Name
));
4670 if Nkind
(Name
(Mech_Name
)) /= N_Identifier
4671 or else Chars
(Name
(Mech_Name
)) /= Name_Descriptor
4672 or else Present
(Next
(Param
))
4673 or else No
(Selector_Name
(Param
))
4674 or else Chars
(Selector_Name
(Param
)) /= Name_Class
4678 Class
:= Explicit_Actual_Parameter
(Param
);
4685 -- Fall through here with Class set to descriptor class name
4687 Check_VMS
(Mech_Name
);
4689 if Nkind
(Class
) /= N_Identifier
then
4692 elsif Chars
(Class
) = Name_UBS
then
4693 Set_Mechanism
(Ent
, By_Descriptor_UBS
);
4695 elsif Chars
(Class
) = Name_UBSB
then
4696 Set_Mechanism
(Ent
, By_Descriptor_UBSB
);
4698 elsif Chars
(Class
) = Name_UBA
then
4699 Set_Mechanism
(Ent
, By_Descriptor_UBA
);
4701 elsif Chars
(Class
) = Name_S
then
4702 Set_Mechanism
(Ent
, By_Descriptor_S
);
4704 elsif Chars
(Class
) = Name_SB
then
4705 Set_Mechanism
(Ent
, By_Descriptor_SB
);
4707 elsif Chars
(Class
) = Name_A
then
4708 Set_Mechanism
(Ent
, By_Descriptor_A
);
4710 elsif Chars
(Class
) = Name_NCA
then
4711 Set_Mechanism
(Ent
, By_Descriptor_NCA
);
4716 end Set_Mechanism_Value
;
4718 ---------------------------
4719 -- Set_Ravenscar_Profile --
4720 ---------------------------
4722 -- The tasks to be done here are
4724 -- Set required policies
4726 -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
4727 -- pragma Locking_Policy (Ceiling_Locking)
4729 -- Set Detect_Blocking mode
4731 -- Set required restrictions (see System.Rident for detailed list)
4733 procedure Set_Ravenscar_Profile
(N
: Node_Id
) is
4735 -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
4737 if Task_Dispatching_Policy
/= ' '
4738 and then Task_Dispatching_Policy
/= 'F'
4740 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
4741 Error_Pragma
("Profile (Ravenscar) incompatible with policy#");
4743 -- Set the FIFO_Within_Priorities policy, but always preserve
4744 -- System_Location since we like the error message with the run time
4748 Task_Dispatching_Policy
:= 'F';
4750 if Task_Dispatching_Policy_Sloc
/= System_Location
then
4751 Task_Dispatching_Policy_Sloc
:= Loc
;
4755 -- pragma Locking_Policy (Ceiling_Locking)
4757 if Locking_Policy
/= ' '
4758 and then Locking_Policy
/= 'C'
4760 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
4761 Error_Pragma
("Profile (Ravenscar) incompatible with policy#");
4763 -- Set the Ceiling_Locking policy, but preserve System_Location since
4764 -- we like the error message with the run time name.
4767 Locking_Policy
:= 'C';
4769 if Locking_Policy_Sloc
/= System_Location
then
4770 Locking_Policy_Sloc
:= Loc
;
4774 -- pragma Detect_Blocking
4776 Detect_Blocking
:= True;
4778 -- Set the corresponding restrictions
4780 Set_Profile_Restrictions
4781 (Ravenscar
, N
, Warn
=> Treat_Restrictions_As_Warnings
);
4782 end Set_Ravenscar_Profile
;
4784 -- Start of processing for Analyze_Pragma
4787 -- Deal with unrecognized pragma
4789 if not Is_Pragma_Name
(Pname
) then
4790 if Warn_On_Unrecognized_Pragma
then
4791 Error_Msg_Name_1
:= Pname
;
4792 Error_Msg_N
("?unrecognized pragma%!", Pragma_Identifier
(N
));
4794 for PN
in First_Pragma_Name
.. Last_Pragma_Name
loop
4795 if Is_Bad_Spelling_Of
(Pname
, PN
) then
4796 Error_Msg_Name_1
:= PN
;
4798 ("\?possible misspelling of %!", Pragma_Identifier
(N
));
4807 -- Here to start processing for recognized pragma
4809 Prag_Id
:= Get_Pragma_Id
(Pname
);
4818 if Present
(Pragma_Argument_Associations
(N
)) then
4819 Arg1
:= First
(Pragma_Argument_Associations
(N
));
4821 if Present
(Arg1
) then
4822 Arg2
:= Next
(Arg1
);
4824 if Present
(Arg2
) then
4825 Arg3
:= Next
(Arg2
);
4827 if Present
(Arg3
) then
4828 Arg4
:= Next
(Arg3
);
4834 -- Count number of arguments
4841 while Present
(Arg_Node
) loop
4842 Arg_Count
:= Arg_Count
+ 1;
4847 -- An enumeration type defines the pragmas that are supported by the
4848 -- implementation. Get_Pragma_Id (in package Prag) transforms a name
4849 -- into the corresponding enumeration value for the following case.
4857 -- pragma Abort_Defer;
4859 when Pragma_Abort_Defer
=>
4861 Check_Arg_Count
(0);
4863 -- The only required semantic processing is to check the
4864 -- placement. This pragma must appear at the start of the
4865 -- statement sequence of a handled sequence of statements.
4867 if Nkind
(Parent
(N
)) /= N_Handled_Sequence_Of_Statements
4868 or else N
/= First
(Statements
(Parent
(N
)))
4879 -- Note: this pragma also has some specific processing in Par.Prag
4880 -- because we want to set the Ada version mode during parsing.
4882 when Pragma_Ada_83
=>
4884 Check_Arg_Count
(0);
4886 -- We really should check unconditionally for proper configuration
4887 -- pragma placement, since we really don't want mixed Ada modes
4888 -- within a single unit, and the GNAT reference manual has always
4889 -- said this was a configuration pragma, but we did not check and
4890 -- are hesitant to add the check now.
4892 -- However, we really cannot tolerate mixing Ada 2005 with Ada 83
4893 -- or Ada 95, so we must check if we are in Ada 2005 mode.
4895 if Ada_Version
>= Ada_05
then
4896 Check_Valid_Configuration_Pragma
;
4899 -- Now set Ada 83 mode
4901 Ada_Version
:= Ada_83
;
4902 Ada_Version_Explicit
:= Ada_Version
;
4910 -- Note: this pragma also has some specific processing in Par.Prag
4911 -- because we want to set the Ada 83 version mode during parsing.
4913 when Pragma_Ada_95
=>
4915 Check_Arg_Count
(0);
4917 -- We really should check unconditionally for proper configuration
4918 -- pragma placement, since we really don't want mixed Ada modes
4919 -- within a single unit, and the GNAT reference manual has always
4920 -- said this was a configuration pragma, but we did not check and
4921 -- are hesitant to add the check now.
4923 -- However, we really cannot tolerate mixing Ada 2005 with Ada 83
4924 -- or Ada 95, so we must check if we are in Ada 2005 mode.
4926 if Ada_Version
>= Ada_05
then
4927 Check_Valid_Configuration_Pragma
;
4930 -- Now set Ada 95 mode
4932 Ada_Version
:= Ada_95
;
4933 Ada_Version_Explicit
:= Ada_Version
;
4935 ---------------------
4936 -- Ada_05/Ada_2005 --
4937 ---------------------
4940 -- pragma Ada_05 (LOCAL_NAME);
4943 -- pragma Ada_2005 (LOCAL_NAME):
4945 -- Note: these pragma also have some specific processing in Par.Prag
4946 -- because we want to set the Ada 2005 version mode during parsing.
4948 when Pragma_Ada_05 | Pragma_Ada_2005
=> declare
4954 if Arg_Count
= 1 then
4955 Check_Arg_Is_Local_Name
(Arg1
);
4956 E_Id
:= Expression
(Arg1
);
4958 if Etype
(E_Id
) = Any_Type
then
4962 Set_Is_Ada_2005_Only
(Entity
(E_Id
));
4965 Check_Arg_Count
(0);
4967 -- For Ada_2005 we unconditionally enforce the documented
4968 -- configuration pragma placement, since we do not want to
4969 -- tolerate mixed modes in a unit involving Ada 2005. That
4970 -- would cause real difficulties for those cases where there
4971 -- are incompatibilities between Ada 95 and Ada 2005.
4973 Check_Valid_Configuration_Pragma
;
4975 -- Now set Ada 2005 mode
4977 Ada_Version
:= Ada_05
;
4978 Ada_Version_Explicit
:= Ada_05
;
4982 ----------------------
4983 -- All_Calls_Remote --
4984 ----------------------
4986 -- pragma All_Calls_Remote [(library_package_NAME)];
4988 when Pragma_All_Calls_Remote
=> All_Calls_Remote
: declare
4989 Lib_Entity
: Entity_Id
;
4992 Check_Ada_83_Warning
;
4993 Check_Valid_Library_Unit_Pragma
;
4995 if Nkind
(N
) = N_Null_Statement
then
4999 Lib_Entity
:= Find_Lib_Unit_Name
;
5001 -- This pragma should only apply to a RCI unit (RM E.2.3(23))
5003 if Present
(Lib_Entity
)
5004 and then not Debug_Flag_U
5006 if not Is_Remote_Call_Interface
(Lib_Entity
) then
5007 Error_Pragma
("pragma% only apply to rci unit");
5009 -- Set flag for entity of the library unit
5012 Set_Has_All_Calls_Remote
(Lib_Entity
);
5016 end All_Calls_Remote
;
5022 -- pragma Annotate (IDENTIFIER {, ARG});
5023 -- ARG ::= NAME | EXPRESSION
5025 when Pragma_Annotate
=> Annotate
: begin
5027 Check_At_Least_N_Arguments
(1);
5028 Check_Arg_Is_Identifier
(Arg1
);
5036 while Present
(Arg
) loop
5037 Exp
:= Expression
(Arg
);
5040 if Is_Entity_Name
(Exp
) then
5043 elsif Nkind
(Exp
) = N_String_Literal
then
5044 Resolve
(Exp
, Standard_String
);
5046 elsif Is_Overloaded
(Exp
) then
5047 Error_Pragma_Arg
("ambiguous argument for pragma%", Exp
);
5062 -- pragma Assert ([Check =>] Boolean_EXPRESSION
5063 -- [, [Message =>] Static_String_EXPRESSION]);
5065 when Pragma_Assert
=> Assert
: declare
5071 Check_At_Least_N_Arguments
(1);
5072 Check_At_Most_N_Arguments
(2);
5073 Check_Arg_Order
((Name_Check
, Name_Message
));
5074 Check_Optional_Identifier
(Arg1
, Name_Check
);
5076 -- We treat pragma Assert as equivalent to:
5078 -- pragma Check (Assertion, condition [, msg]);
5080 -- So rewrite pragma in this manner, and analyze the result
5082 Expr
:= Get_Pragma_Arg
(Arg1
);
5084 Make_Pragma_Argument_Association
(Loc
,
5086 Make_Identifier
(Loc
,
5087 Chars
=> Name_Assertion
)),
5089 Make_Pragma_Argument_Association
(Sloc
(Expr
),
5090 Expression
=> Expr
));
5092 if Arg_Count
> 1 then
5093 Check_Optional_Identifier
(Arg2
, Name_Message
);
5094 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg2
), Standard_String
);
5095 Append_To
(Newa
, Relocate_Node
(Arg2
));
5100 Chars
=> Name_Check
,
5101 Pragma_Argument_Associations
=> Newa
));
5105 ----------------------
5106 -- Assertion_Policy --
5107 ----------------------
5109 -- pragma Assertion_Policy (Check | Ignore)
5111 when Pragma_Assertion_Policy
=> Assertion_Policy
: declare
5116 Check_Valid_Configuration_Pragma
;
5117 Check_Arg_Count
(1);
5118 Check_No_Identifiers
;
5119 Check_Arg_Is_One_Of
(Arg1
, Name_Check
, Name_Ignore
);
5121 -- We treat pragma Assertion_Policy as equivalent to:
5123 -- pragma Check_Policy (Assertion, policy)
5125 -- So rewrite the pragma in that manner and link on to the chain
5126 -- of Check_Policy pragmas, marking the pragma as analyzed.
5128 Policy
:= Get_Pragma_Arg
(Arg1
);
5132 Chars
=> Name_Check_Policy
,
5134 Pragma_Argument_Associations
=> New_List
(
5135 Make_Pragma_Argument_Association
(Loc
,
5137 Make_Identifier
(Loc
,
5138 Chars
=> Name_Assertion
)),
5140 Make_Pragma_Argument_Association
(Loc
,
5142 Make_Identifier
(Sloc
(Policy
),
5143 Chars
=> Chars
(Policy
))))));
5146 Set_Next_Pragma
(N
, Opt
.Check_Policy_List
);
5147 Opt
.Check_Policy_List
:= N
;
5148 end Assertion_Policy
;
5154 -- pragma AST_Entry (entry_IDENTIFIER);
5156 when Pragma_AST_Entry
=> AST_Entry
: declare
5162 Check_Arg_Count
(1);
5163 Check_No_Identifiers
;
5164 Check_Arg_Is_Local_Name
(Arg1
);
5165 Ent
:= Entity
(Expression
(Arg1
));
5167 -- Note: the implementation of the AST_Entry pragma could handle
5168 -- the entry family case fine, but for now we are consistent with
5169 -- the DEC rules, and do not allow the pragma, which of course
5170 -- has the effect of also forbidding the attribute.
5172 if Ekind
(Ent
) /= E_Entry
then
5174 ("pragma% argument must be simple entry name", Arg1
);
5176 elsif Is_AST_Entry
(Ent
) then
5178 ("duplicate % pragma for entry", Arg1
);
5180 elsif Has_Homonym
(Ent
) then
5182 ("pragma% argument cannot specify overloaded entry", Arg1
);
5186 FF
: constant Entity_Id
:= First_Formal
(Ent
);
5189 if Present
(FF
) then
5190 if Present
(Next_Formal
(FF
)) then
5192 ("entry for pragma% can have only one argument",
5195 elsif Parameter_Mode
(FF
) /= E_In_Parameter
then
5197 ("entry parameter for pragma% must have mode IN",
5203 Set_Is_AST_Entry
(Ent
);
5211 -- pragma Asynchronous (LOCAL_NAME);
5213 when Pragma_Asynchronous
=> Asynchronous
: declare
5221 procedure Process_Async_Pragma
;
5222 -- Common processing for procedure and access-to-procedure case
5224 --------------------------
5225 -- Process_Async_Pragma --
5226 --------------------------
5228 procedure Process_Async_Pragma
is
5231 Set_Is_Asynchronous
(Nm
);
5235 -- The formals should be of mode IN (RM E.4.1(6))
5238 while Present
(S
) loop
5239 Formal
:= Defining_Identifier
(S
);
5241 if Nkind
(Formal
) = N_Defining_Identifier
5242 and then Ekind
(Formal
) /= E_In_Parameter
5245 ("pragma% procedure can only have IN parameter",
5252 Set_Is_Asynchronous
(Nm
);
5253 end Process_Async_Pragma
;
5255 -- Start of processing for pragma Asynchronous
5258 Check_Ada_83_Warning
;
5259 Check_No_Identifiers
;
5260 Check_Arg_Count
(1);
5261 Check_Arg_Is_Local_Name
(Arg1
);
5263 if Debug_Flag_U
then
5267 C_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
5268 Analyze
(Expression
(Arg1
));
5269 Nm
:= Entity
(Expression
(Arg1
));
5271 if not Is_Remote_Call_Interface
(C_Ent
)
5272 and then not Is_Remote_Types
(C_Ent
)
5274 -- This pragma should only appear in an RCI or Remote Types
5275 -- unit (RM E.4.1(4))
5278 ("pragma% not in Remote_Call_Interface or " &
5279 "Remote_Types unit");
5282 if Ekind
(Nm
) = E_Procedure
5283 and then Nkind
(Parent
(Nm
)) = N_Procedure_Specification
5285 if not Is_Remote_Call_Interface
(Nm
) then
5287 ("pragma% cannot be applied on non-remote procedure",
5291 L
:= Parameter_Specifications
(Parent
(Nm
));
5292 Process_Async_Pragma
;
5295 elsif Ekind
(Nm
) = E_Function
then
5297 ("pragma% cannot be applied to function", Arg1
);
5299 elsif Is_Remote_Access_To_Subprogram_Type
(Nm
) then
5301 if Is_Record_Type
(Nm
) then
5302 -- A record type that is the Equivalent_Type for
5303 -- a remote access-to-subprogram type.
5305 N
:= Declaration_Node
(Corresponding_Remote_Type
(Nm
));
5308 -- A non-expanded RAS type (case where distribution is
5311 N
:= Declaration_Node
(Nm
);
5314 if Nkind
(N
) = N_Full_Type_Declaration
5315 and then Nkind
(Type_Definition
(N
)) =
5316 N_Access_Procedure_Definition
5318 L
:= Parameter_Specifications
(Type_Definition
(N
));
5319 Process_Async_Pragma
;
5321 if Is_Asynchronous
(Nm
)
5322 and then Expander_Active
5323 and then Get_PCS_Name
/= Name_No_DSA
5325 RACW_Type_Is_Asynchronous
(Underlying_RACW_Type
(Nm
));
5330 ("pragma% cannot reference access-to-function type",
5334 -- Only other possibility is Access-to-class-wide type
5336 elsif Is_Access_Type
(Nm
)
5337 and then Is_Class_Wide_Type
(Designated_Type
(Nm
))
5339 Check_First_Subtype
(Arg1
);
5340 Set_Is_Asynchronous
(Nm
);
5341 if Expander_Active
then
5342 RACW_Type_Is_Asynchronous
(Nm
);
5346 Error_Pragma_Arg
("inappropriate argument for pragma%", Arg1
);
5354 -- pragma Atomic (LOCAL_NAME);
5356 when Pragma_Atomic
=>
5357 Process_Atomic_Shared_Volatile
;
5359 -----------------------
5360 -- Atomic_Components --
5361 -----------------------
5363 -- pragma Atomic_Components (array_LOCAL_NAME);
5365 -- This processing is shared by Volatile_Components
5367 when Pragma_Atomic_Components |
5368 Pragma_Volatile_Components
=>
5370 Atomic_Components
: declare
5377 Check_Ada_83_Warning
;
5378 Check_No_Identifiers
;
5379 Check_Arg_Count
(1);
5380 Check_Arg_Is_Local_Name
(Arg1
);
5381 E_Id
:= Expression
(Arg1
);
5383 if Etype
(E_Id
) = Any_Type
then
5389 if Rep_Item_Too_Early
(E
, N
)
5391 Rep_Item_Too_Late
(E
, N
)
5396 D
:= Declaration_Node
(E
);
5399 if (K
= N_Full_Type_Declaration
and then Is_Array_Type
(E
))
5401 ((Ekind
(E
) = E_Constant
or else Ekind
(E
) = E_Variable
)
5402 and then Nkind
(D
) = N_Object_Declaration
5403 and then Nkind
(Object_Definition
(D
)) =
5404 N_Constrained_Array_Definition
)
5406 -- The flag is set on the object, or on the base type
5408 if Nkind
(D
) /= N_Object_Declaration
then
5412 Set_Has_Volatile_Components
(E
);
5414 if Prag_Id
= Pragma_Atomic_Components
then
5415 Set_Has_Atomic_Components
(E
);
5417 if Is_Packed
(E
) then
5418 Set_Is_Packed
(E
, False);
5421 ("?Pack canceled, cannot pack atomic components",
5427 Error_Pragma_Arg
("inappropriate entity for pragma%", Arg1
);
5429 end Atomic_Components
;
5431 --------------------
5432 -- Attach_Handler --
5433 --------------------
5435 -- pragma Attach_Handler (handler_NAME, EXPRESSION);
5437 when Pragma_Attach_Handler
=>
5438 Check_Ada_83_Warning
;
5439 Check_No_Identifiers
;
5440 Check_Arg_Count
(2);
5442 if No_Run_Time_Mode
then
5443 Error_Msg_CRT
("Attach_Handler pragma", N
);
5445 Check_Interrupt_Or_Attach_Handler
;
5447 -- The expression that designates the attribute may
5448 -- depend on a discriminant, and is therefore a per-
5449 -- object expression, to be expanded in the init proc.
5450 -- If expansion is enabled, perform semantic checks
5453 if Expander_Active
then
5455 Temp
: constant Node_Id
:=
5456 New_Copy_Tree
(Expression
(Arg2
));
5458 Set_Parent
(Temp
, N
);
5459 Preanalyze_And_Resolve
(Temp
, RTE
(RE_Interrupt_ID
));
5463 Analyze
(Expression
(Arg2
));
5464 Resolve
(Expression
(Arg2
), RTE
(RE_Interrupt_ID
));
5467 Process_Interrupt_Or_Attach_Handler
;
5470 --------------------
5471 -- C_Pass_By_Copy --
5472 --------------------
5474 -- pragma C_Pass_By_Copy ([Max_Size =>] static_integer_EXPRESSION);
5476 when Pragma_C_Pass_By_Copy
=> C_Pass_By_Copy
: declare
5482 Check_Valid_Configuration_Pragma
;
5483 Check_Arg_Count
(1);
5484 Check_Optional_Identifier
(Arg1
, "max_size");
5486 Arg
:= Expression
(Arg1
);
5487 Check_Arg_Is_Static_Expression
(Arg
, Any_Integer
);
5489 Val
:= Expr_Value
(Arg
);
5493 ("maximum size for pragma% must be positive", Arg1
);
5495 elsif UI_Is_In_Int_Range
(Val
) then
5496 Default_C_Record_Mechanism
:= UI_To_Int
(Val
);
5498 -- If a giant value is given, Int'Last will do well enough.
5499 -- If sometime someone complains that a record larger than
5500 -- two gigabytes is not copied, we will worry about it then!
5503 Default_C_Record_Mechanism
:= Mechanism_Type
'Last;
5511 -- pragma Check ([Name =>] Identifier,
5512 -- [Check =>] Boolean_Expression
5513 -- [,[Message =>] String_Expression]);
5515 when Pragma_Check
=> Check
: declare
5520 -- Set True if category of assertions referenced by Name enabled
5524 Check_At_Least_N_Arguments
(2);
5525 Check_At_Most_N_Arguments
(3);
5526 Check_Optional_Identifier
(Arg1
, Name_Name
);
5527 Check_Optional_Identifier
(Arg2
, Name_Check
);
5529 if Arg_Count
= 3 then
5530 Check_Optional_Identifier
(Arg3
, Name_Message
);
5531 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg3
), Standard_String
);
5534 Check_Arg_Is_Identifier
(Arg1
);
5535 Check_On
:= Check_Enabled
(Chars
(Get_Pragma_Arg
(Arg1
)));
5537 -- If expansion is active and the check is not enabled then we
5538 -- rewrite the Check as:
5540 -- if False and then condition then
5544 -- The reason we do this rewriting during semantic analysis rather
5545 -- than as part of normal expansion is that we cannot analyze and
5546 -- expand the code for the boolean expression directly, or it may
5547 -- cause insertion of actions that would escape the attempt to
5548 -- suppress the check code.
5550 -- Note that the Sloc for the if statement corresponds to the
5551 -- argument condition, not the pragma itself. The reason for this
5552 -- is that we may generate a warning if the condition is False at
5553 -- compile time, and we do not want to delete this warning when we
5554 -- delete the if statement.
5556 Expr
:= Expression
(Arg2
);
5558 if Expander_Active
and then not Check_On
then
5559 Eloc
:= Sloc
(Expr
);
5562 Make_If_Statement
(Eloc
,
5564 Make_And_Then
(Eloc
,
5565 Left_Opnd
=> New_Occurrence_Of
(Standard_False
, Eloc
),
5566 Right_Opnd
=> Expr
),
5567 Then_Statements
=> New_List
(
5568 Make_Null_Statement
(Eloc
))));
5575 Analyze_And_Resolve
(Expr
, Any_Boolean
);
5578 -- If assertion is of the form (X'First = literal), where X is
5579 -- a formal, then set Low_Bound_Known flag on this formal.
5581 if Nkind
(Expr
) = N_Op_Eq
then
5583 Right
: constant Node_Id
:= Right_Opnd
(Expr
);
5584 Left
: constant Node_Id
:= Left_Opnd
(Expr
);
5586 if Nkind
(Left
) = N_Attribute_Reference
5587 and then Attribute_Name
(Left
) = Name_First
5588 and then Is_Entity_Name
(Prefix
(Left
))
5589 and then Is_Formal
(Entity
(Prefix
(Left
)))
5590 and then Nkind
(Right
) = N_Integer_Literal
5592 Set_Low_Bound_Known
(Entity
(Prefix
(Left
)));
5602 -- pragma Check_Name (check_IDENTIFIER);
5604 when Pragma_Check_Name
=>
5605 Check_No_Identifiers
;
5607 Check_Valid_Configuration_Pragma
;
5608 Check_Arg_Count
(1);
5609 Check_Arg_Is_Identifier
(Arg1
);
5612 Nam
: constant Name_Id
:= Chars
(Expression
(Arg1
));
5615 for J
in Check_Names
.First
.. Check_Names
.Last
loop
5616 if Check_Names
.Table
(J
) = Nam
then
5621 Check_Names
.Append
(Nam
);
5628 -- pragma Check_Policy ([Name =>] IDENTIFIER,
5629 -- POLICY_IDENTIFIER;
5631 -- POLICY_IDENTIFIER ::= ON | OFF | CHECK | IGNORE
5633 -- Note: this is a configuration pragma, but it is allowed to
5634 -- appear anywhere else.
5636 when Pragma_Check_Policy
=>
5638 Check_Arg_Count
(2);
5639 Check_No_Identifier
(Arg2
);
5640 Check_Optional_Identifier
(Arg1
, Name_Name
);
5642 (Arg2
, Name_On
, Name_Off
, Name_Check
, Name_Ignore
);
5644 -- A Check_Policy pragma can appear either as a configuration
5645 -- pragma, or in a declarative part or a package spec (see RM
5646 -- 11.5(5) for rules for Suppress/Unsuppress which are also
5647 -- followed for Check_Policy).
5649 if not Is_Configuration_Pragma
then
5650 Check_Is_In_Decl_Part_Or_Package_Spec
;
5653 Set_Next_Pragma
(N
, Opt
.Check_Policy_List
);
5654 Opt
.Check_Policy_List
:= N
;
5656 ---------------------
5657 -- CIL_Constructor --
5658 ---------------------
5660 -- pragma CIL_Constructor ([Entity =>] LOCAL_NAME);
5662 -- Processing for this pragma is shared with Java_Constructor
5668 -- pragma Comment (static_string_EXPRESSION)
5670 -- Processing for pragma Comment shares the circuitry for
5671 -- pragma Ident. The only differences are that Ident enforces
5672 -- a limit of 31 characters on its argument, and also enforces
5673 -- limitations on placement for DEC compatibility. Pragma
5674 -- Comment shares neither of these restrictions.
5680 -- pragma Common_Object (
5681 -- [Internal =>] LOCAL_NAME
5682 -- [, [External =>] EXTERNAL_SYMBOL]
5683 -- [, [Size =>] EXTERNAL_SYMBOL]);
5685 -- Processing for this pragma is shared with Psect_Object
5687 ------------------------
5688 -- Compile_Time_Error --
5689 ------------------------
5691 -- pragma Compile_Time_Error
5692 -- (boolean_EXPRESSION, static_string_EXPRESSION);
5694 when Pragma_Compile_Time_Error
=>
5695 Process_Compile_Time_Warning_Or_Error
;
5697 --------------------------
5698 -- Compile_Time_Warning --
5699 --------------------------
5701 -- pragma Compile_Time_Warning
5702 -- (boolean_EXPRESSION, static_string_EXPRESSION);
5704 when Pragma_Compile_Time_Warning
=>
5705 Process_Compile_Time_Warning_Or_Error
;
5711 when Pragma_Compiler_Unit
=>
5713 Check_Arg_Count
(0);
5714 Set_Is_Compiler_Unit
(Get_Source_Unit
(N
));
5716 -----------------------------
5717 -- Complete_Representation --
5718 -----------------------------
5720 -- pragma Complete_Representation;
5722 when Pragma_Complete_Representation
=>
5724 Check_Arg_Count
(0);
5726 if Nkind
(Parent
(N
)) /= N_Record_Representation_Clause
then
5728 ("pragma & must appear within record representation clause");
5731 ----------------------------
5732 -- Complex_Representation --
5733 ----------------------------
5735 -- pragma Complex_Representation ([Entity =>] LOCAL_NAME);
5737 when Pragma_Complex_Representation
=> Complex_Representation
: declare
5744 Check_Arg_Count
(1);
5745 Check_Optional_Identifier
(Arg1
, Name_Entity
);
5746 Check_Arg_Is_Local_Name
(Arg1
);
5747 E_Id
:= Expression
(Arg1
);
5749 if Etype
(E_Id
) = Any_Type
then
5755 if not Is_Record_Type
(E
) then
5757 ("argument for pragma% must be record type", Arg1
);
5760 Ent
:= First_Entity
(E
);
5763 or else No
(Next_Entity
(Ent
))
5764 or else Present
(Next_Entity
(Next_Entity
(Ent
)))
5765 or else not Is_Floating_Point_Type
(Etype
(Ent
))
5766 or else Etype
(Ent
) /= Etype
(Next_Entity
(Ent
))
5769 ("record for pragma% must have two fields of the same "
5770 & "floating-point type", Arg1
);
5773 Set_Has_Complex_Representation
(Base_Type
(E
));
5775 -- We need to treat the type has having a non-standard
5776 -- representation, for back-end purposes, even though in
5777 -- general a complex will have the default representation
5778 -- of a record with two real components.
5780 Set_Has_Non_Standard_Rep
(Base_Type
(E
));
5782 end Complex_Representation
;
5784 -------------------------
5785 -- Component_Alignment --
5786 -------------------------
5788 -- pragma Component_Alignment (
5789 -- [Form =>] ALIGNMENT_CHOICE
5790 -- [, [Name =>] type_LOCAL_NAME]);
5792 -- ALIGNMENT_CHOICE ::=
5794 -- | Component_Size_4
5798 when Pragma_Component_Alignment
=> Component_AlignmentP
: declare
5799 Args
: Args_List
(1 .. 2);
5800 Names
: constant Name_List
(1 .. 2) := (
5804 Form
: Node_Id
renames Args
(1);
5805 Name
: Node_Id
renames Args
(2);
5807 Atype
: Component_Alignment_Kind
;
5812 Gather_Associations
(Names
, Args
);
5815 Error_Pragma
("missing Form argument for pragma%");
5818 Check_Arg_Is_Identifier
(Form
);
5820 -- Get proper alignment, note that Default = Component_Size
5821 -- on all machines we have so far, and we want to set this
5822 -- value rather than the default value to indicate that it
5823 -- has been explicitly set (and thus will not get overridden
5824 -- by the default component alignment for the current scope)
5826 if Chars
(Form
) = Name_Component_Size
then
5827 Atype
:= Calign_Component_Size
;
5829 elsif Chars
(Form
) = Name_Component_Size_4
then
5830 Atype
:= Calign_Component_Size_4
;
5832 elsif Chars
(Form
) = Name_Default
then
5833 Atype
:= Calign_Component_Size
;
5835 elsif Chars
(Form
) = Name_Storage_Unit
then
5836 Atype
:= Calign_Storage_Unit
;
5840 ("invalid Form parameter for pragma%", Form
);
5843 -- Case with no name, supplied, affects scope table entry
5847 (Scope_Stack
.Last
).Component_Alignment_Default
:= Atype
;
5849 -- Case of name supplied
5852 Check_Arg_Is_Local_Name
(Name
);
5854 Typ
:= Entity
(Name
);
5857 or else Rep_Item_Too_Early
(Typ
, N
)
5861 Typ
:= Underlying_Type
(Typ
);
5864 if not Is_Record_Type
(Typ
)
5865 and then not Is_Array_Type
(Typ
)
5868 ("Name parameter of pragma% must identify record or " &
5869 "array type", Name
);
5872 -- An explicit Component_Alignment pragma overrides an
5873 -- implicit pragma Pack, but not an explicit one.
5875 if not Has_Pragma_Pack
(Base_Type
(Typ
)) then
5876 Set_Is_Packed
(Base_Type
(Typ
), False);
5877 Set_Component_Alignment
(Base_Type
(Typ
), Atype
);
5880 end Component_AlignmentP
;
5886 -- pragma Controlled (first_subtype_LOCAL_NAME);
5888 when Pragma_Controlled
=> Controlled
: declare
5892 Check_No_Identifiers
;
5893 Check_Arg_Count
(1);
5894 Check_Arg_Is_Local_Name
(Arg1
);
5895 Arg
:= Expression
(Arg1
);
5897 if not Is_Entity_Name
(Arg
)
5898 or else not Is_Access_Type
(Entity
(Arg
))
5900 Error_Pragma_Arg
("pragma% requires access type", Arg1
);
5902 Set_Has_Pragma_Controlled
(Base_Type
(Entity
(Arg
)));
5910 -- pragma Convention ([Convention =>] convention_IDENTIFIER,
5911 -- [Entity =>] LOCAL_NAME);
5913 when Pragma_Convention
=> Convention
: declare
5916 pragma Warnings
(Off
, C
);
5917 pragma Warnings
(Off
, E
);
5919 Check_Arg_Order
((Name_Convention
, Name_Entity
));
5920 Check_Ada_83_Warning
;
5921 Check_Arg_Count
(2);
5922 Process_Convention
(C
, E
);
5925 ---------------------------
5926 -- Convention_Identifier --
5927 ---------------------------
5929 -- pragma Convention_Identifier ([Name =>] IDENTIFIER,
5930 -- [Convention =>] convention_IDENTIFIER);
5932 when Pragma_Convention_Identifier
=> Convention_Identifier
: declare
5938 Check_Arg_Order
((Name_Name
, Name_Convention
));
5939 Check_Arg_Count
(2);
5940 Check_Optional_Identifier
(Arg1
, Name_Name
);
5941 Check_Optional_Identifier
(Arg2
, Name_Convention
);
5942 Check_Arg_Is_Identifier
(Arg1
);
5943 Check_Arg_Is_Identifier
(Arg2
);
5944 Idnam
:= Chars
(Expression
(Arg1
));
5945 Cname
:= Chars
(Expression
(Arg2
));
5947 if Is_Convention_Name
(Cname
) then
5948 Record_Convention_Identifier
5949 (Idnam
, Get_Convention_Id
(Cname
));
5952 ("second arg for % pragma must be convention", Arg2
);
5954 end Convention_Identifier
;
5960 -- pragma CPP_Class ([Entity =>] local_NAME)
5962 when Pragma_CPP_Class
=> CPP_Class
: declare
5967 if Warn_On_Obsolescent_Feature
then
5969 ("'G'N'A'T pragma cpp'_class is now obsolete; replace it" &
5970 " by pragma import?", N
);
5974 Check_Arg_Count
(1);
5975 Check_Optional_Identifier
(Arg1
, Name_Entity
);
5976 Check_Arg_Is_Local_Name
(Arg1
);
5978 Arg
:= Expression
(Arg1
);
5981 if Etype
(Arg
) = Any_Type
then
5985 if not Is_Entity_Name
(Arg
)
5986 or else not Is_Type
(Entity
(Arg
))
5988 Error_Pragma_Arg
("pragma% requires a type mark", Arg1
);
5991 Typ
:= Entity
(Arg
);
5993 if not Is_Tagged_Type
(Typ
) then
5994 Error_Pragma_Arg
("pragma% applicable to tagged types ", Arg1
);
5997 -- Types treated as CPP classes are treated as limited, but we
5998 -- don't require them to be declared this way. A warning is issued
5999 -- to encourage the user to declare them as limited. This is not
6000 -- an error, for compatibility reasons, because these types have
6001 -- been supported this way for some time.
6003 if not Is_Limited_Type
(Typ
) then
6005 ("imported 'C'P'P type should be " &
6006 "explicitly declared limited?",
6007 Get_Pragma_Arg
(Arg1
));
6009 ("\type will be considered limited",
6010 Get_Pragma_Arg
(Arg1
));
6013 Set_Is_CPP_Class
(Typ
);
6014 Set_Is_Limited_Record
(Typ
);
6015 Set_Convention
(Typ
, Convention_CPP
);
6018 ---------------------
6019 -- CPP_Constructor --
6020 ---------------------
6022 -- pragma CPP_Constructor ([Entity =>] LOCAL_NAME
6023 -- [, [External_Name =>] static_string_EXPRESSION ]
6024 -- [, [Link_Name =>] static_string_EXPRESSION ]);
6026 when Pragma_CPP_Constructor
=> CPP_Constructor
: declare
6032 Check_At_Least_N_Arguments
(1);
6033 Check_At_Most_N_Arguments
(3);
6034 Check_Optional_Identifier
(Arg1
, Name_Entity
);
6035 Check_Arg_Is_Local_Name
(Arg1
);
6037 Id
:= Expression
(Arg1
);
6038 Find_Program_Unit_Name
(Id
);
6040 -- If we did not find the name, we are done
6042 if Etype
(Id
) = Any_Type
then
6046 Def_Id
:= Entity
(Id
);
6048 if Ekind
(Def_Id
) = E_Function
6049 and then Is_Class_Wide_Type
(Etype
(Def_Id
))
6050 and then Is_CPP_Class
(Etype
(Etype
(Def_Id
)))
6052 if Arg_Count
>= 2 then
6053 Set_Imported
(Def_Id
);
6054 Set_Is_Public
(Def_Id
);
6055 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
6058 if No
(Parameter_Specifications
(Parent
(Def_Id
))) then
6059 Set_Has_Completion
(Def_Id
);
6060 Set_Is_Constructor
(Def_Id
);
6063 ("non-default constructors not implemented", Arg1
);
6068 ("pragma% requires function returning a 'C'P'P_Class type",
6071 end CPP_Constructor
;
6077 when Pragma_CPP_Virtual
=> CPP_Virtual
: declare
6079 if Warn_On_Obsolescent_Feature
then
6081 ("'G'N'A'T pragma cpp'_virtual is now obsolete and has " &
6090 when Pragma_CPP_Vtable
=> CPP_Vtable
: declare
6092 if Warn_On_Obsolescent_Feature
then
6094 ("'G'N'A'T pragma cpp'_vtable is now obsolete and has " &
6103 -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
6105 when Pragma_Debug
=> Debug
: declare
6113 (Boolean_Literals
(Debug_Pragmas_Enabled
and Expander_Active
),
6116 if Arg_Count
= 2 then
6119 Left_Opnd
=> Relocate_Node
(Cond
),
6120 Right_Opnd
=> Expression
(Arg1
));
6123 -- Rewrite into a conditional with an appropriate condition. We
6124 -- wrap the procedure call in a block so that overhead from e.g.
6125 -- use of the secondary stack does not generate execution overhead
6126 -- for suppressed conditions.
6128 Rewrite
(N
, Make_Implicit_If_Statement
(N
,
6130 Then_Statements
=> New_List
(
6131 Make_Block_Statement
(Loc
,
6132 Handled_Statement_Sequence
=>
6133 Make_Handled_Sequence_Of_Statements
(Loc
,
6134 Statements
=> New_List
(
6135 Relocate_Node
(Debug_Statement
(N
))))))));
6143 -- pragma Debug_Policy (Check | Ignore)
6145 when Pragma_Debug_Policy
=>
6147 Check_Arg_Count
(1);
6148 Check_Arg_Is_One_Of
(Arg1
, Name_Check
, Name_Ignore
);
6149 Debug_Pragmas_Enabled
:= Chars
(Expression
(Arg1
)) = Name_Check
;
6151 ---------------------
6152 -- Detect_Blocking --
6153 ---------------------
6155 -- pragma Detect_Blocking;
6157 when Pragma_Detect_Blocking
=>
6159 Check_Arg_Count
(0);
6160 Check_Valid_Configuration_Pragma
;
6161 Detect_Blocking
:= True;
6167 -- pragma Discard_Names [([On =>] LOCAL_NAME)];
6169 when Pragma_Discard_Names
=> Discard_Names
: declare
6174 Check_Ada_83_Warning
;
6176 -- Deal with configuration pragma case
6178 if Arg_Count
= 0 and then Is_Configuration_Pragma
then
6179 Global_Discard_Names
:= True;
6182 -- Otherwise, check correct appropriate context
6185 Check_Is_In_Decl_Part_Or_Package_Spec
;
6187 if Arg_Count
= 0 then
6189 -- If there is no parameter, then from now on this pragma
6190 -- applies to any enumeration, exception or tagged type
6191 -- defined in the current declarative part, and recursively
6192 -- to any nested scope.
6194 Set_Discard_Names
(Current_Scope
);
6198 Check_Arg_Count
(1);
6199 Check_Optional_Identifier
(Arg1
, Name_On
);
6200 Check_Arg_Is_Local_Name
(Arg1
);
6201 E_Id
:= Expression
(Arg1
);
6203 if Etype
(E_Id
) = Any_Type
then
6209 if (Is_First_Subtype
(E
)
6210 and then (Is_Enumeration_Type
(E
)
6211 or else Is_Tagged_Type
(E
)))
6212 or else Ekind
(E
) = E_Exception
6214 Set_Discard_Names
(E
);
6217 ("inappropriate entity for pragma%", Arg1
);
6227 -- pragma Elaborate (library_unit_NAME {, library_unit_NAME});
6229 when Pragma_Elaborate
=> Elaborate
: declare
6234 -- Pragma must be in context items list of a compilation unit
6236 if not Is_In_Context_Clause
then
6240 -- Must be at least one argument
6242 if Arg_Count
= 0 then
6243 Error_Pragma
("pragma% requires at least one argument");
6246 -- In Ada 83 mode, there can be no items following it in the
6247 -- context list except other pragmas and implicit with clauses
6248 -- (e.g. those added by use of Rtsfind). In Ada 95 mode, this
6249 -- placement rule does not apply.
6251 if Ada_Version
= Ada_83
and then Comes_From_Source
(N
) then
6253 while Present
(Citem
) loop
6254 if Nkind
(Citem
) = N_Pragma
6255 or else (Nkind
(Citem
) = N_With_Clause
6256 and then Implicit_With
(Citem
))
6261 ("(Ada 83) pragma% must be at end of context clause");
6268 -- Finally, the arguments must all be units mentioned in a with
6269 -- clause in the same context clause. Note we already checked (in
6270 -- Par.Prag) that the arguments are all identifiers or selected
6274 Outer
: while Present
(Arg
) loop
6275 Citem
:= First
(List_Containing
(N
));
6276 Inner
: while Citem
/= N
loop
6277 if Nkind
(Citem
) = N_With_Clause
6278 and then Same_Name
(Name
(Citem
), Expression
(Arg
))
6280 Set_Elaborate_Present
(Citem
, True);
6281 Set_Unit_Name
(Expression
(Arg
), Name
(Citem
));
6283 -- With the pragma present, elaboration calls on
6284 -- subprograms from the named unit need no further
6285 -- checks, as long as the pragma appears in the current
6286 -- compilation unit. If the pragma appears in some unit
6287 -- in the context, there might still be a need for an
6288 -- Elaborate_All_Desirable from the current compilation
6289 -- to the named unit, so we keep the check enabled.
6291 if In_Extended_Main_Source_Unit
(N
) then
6292 Set_Suppress_Elaboration_Warnings
6293 (Entity
(Name
(Citem
)));
6304 ("argument of pragma% is not with'ed unit", Arg
);
6310 -- Give a warning if operating in static mode with -gnatwl
6311 -- (elaboration warnings enabled) switch set.
6313 if Elab_Warnings
and not Dynamic_Elaboration_Checks
then
6315 ("?use of pragma Elaborate may not be safe", N
);
6317 ("?use pragma Elaborate_All instead if possible", N
);
6325 -- pragma Elaborate_All (library_unit_NAME {, library_unit_NAME});
6327 when Pragma_Elaborate_All
=> Elaborate_All
: declare
6332 Check_Ada_83_Warning
;
6334 -- Pragma must be in context items list of a compilation unit
6336 if not Is_In_Context_Clause
then
6340 -- Must be at least one argument
6342 if Arg_Count
= 0 then
6343 Error_Pragma
("pragma% requires at least one argument");
6346 -- Note: unlike pragma Elaborate, pragma Elaborate_All does not
6347 -- have to appear at the end of the context clause, but may
6348 -- appear mixed in with other items, even in Ada 83 mode.
6350 -- Final check: the arguments must all be units mentioned in
6351 -- a with clause in the same context clause. Note that we
6352 -- already checked (in Par.Prag) that all the arguments are
6353 -- either identifiers or selected components.
6356 Outr
: while Present
(Arg
) loop
6357 Citem
:= First
(List_Containing
(N
));
6358 Innr
: while Citem
/= N
loop
6359 if Nkind
(Citem
) = N_With_Clause
6360 and then Same_Name
(Name
(Citem
), Expression
(Arg
))
6362 Set_Elaborate_All_Present
(Citem
, True);
6363 Set_Unit_Name
(Expression
(Arg
), Name
(Citem
));
6365 -- Suppress warnings and elaboration checks on the named
6366 -- unit if the pragma is in the current compilation, as
6367 -- for pragma Elaborate.
6369 if In_Extended_Main_Source_Unit
(N
) then
6370 Set_Suppress_Elaboration_Warnings
6371 (Entity
(Name
(Citem
)));
6380 Set_Error_Posted
(N
);
6382 ("argument of pragma% is not with'ed unit", Arg
);
6389 --------------------
6390 -- Elaborate_Body --
6391 --------------------
6393 -- pragma Elaborate_Body [( library_unit_NAME )];
6395 when Pragma_Elaborate_Body
=> Elaborate_Body
: declare
6396 Cunit_Node
: Node_Id
;
6397 Cunit_Ent
: Entity_Id
;
6400 Check_Ada_83_Warning
;
6401 Check_Valid_Library_Unit_Pragma
;
6403 if Nkind
(N
) = N_Null_Statement
then
6407 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
6408 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
6410 if Nkind
(Unit
(Cunit_Node
)) = N_Package_Body
6412 Nkind
(Unit
(Cunit_Node
)) = N_Subprogram_Body
6414 Error_Pragma
("pragma% must refer to a spec, not a body");
6416 Set_Body_Required
(Cunit_Node
, True);
6417 Set_Has_Pragma_Elaborate_Body
(Cunit_Ent
);
6419 -- If we are in dynamic elaboration mode, then we suppress
6420 -- elaboration warnings for the unit, since it is definitely
6421 -- fine NOT to do dynamic checks at the first level (and such
6422 -- checks will be suppressed because no elaboration boolean
6423 -- is created for Elaborate_Body packages).
6425 -- But in the static model of elaboration, Elaborate_Body is
6426 -- definitely NOT good enough to ensure elaboration safety on
6427 -- its own, since the body may WITH other units that are not
6428 -- safe from an elaboration point of view, so a client must
6429 -- still do an Elaborate_All on such units.
6431 -- Debug flag -gnatdD restores the old behavior of 3.13,
6432 -- where Elaborate_Body always suppressed elab warnings.
6434 if Dynamic_Elaboration_Checks
or Debug_Flag_DD
then
6435 Set_Suppress_Elaboration_Warnings
(Cunit_Ent
);
6440 ------------------------
6441 -- Elaboration_Checks --
6442 ------------------------
6444 -- pragma Elaboration_Checks (Static | Dynamic);
6446 when Pragma_Elaboration_Checks
=>
6448 Check_Arg_Count
(1);
6449 Check_Arg_Is_One_Of
(Arg1
, Name_Static
, Name_Dynamic
);
6450 Dynamic_Elaboration_Checks
:=
6451 (Chars
(Get_Pragma_Arg
(Arg1
)) = Name_Dynamic
);
6457 -- pragma Eliminate (
6458 -- [Unit_Name =>] IDENTIFIER |
6459 -- SELECTED_COMPONENT
6460 -- [,[Entity =>] IDENTIFIER |
6461 -- SELECTED_COMPONENT |
6463 -- [,]OVERLOADING_RESOLUTION);
6465 -- OVERLOADING_RESOLUTION ::= PARAMETER_AND_RESULT_TYPE_PROFILE |
6468 -- PARAMETER_AND_RESULT_TYPE_PROFILE ::= PROCEDURE_PROFILE |
6471 -- PROCEDURE_PROFILE ::= Parameter_Types => PARAMETER_TYPES
6473 -- FUNCTION_PROFILE ::= [Parameter_Types => PARAMETER_TYPES,]
6474 -- Result_Type => result_SUBTYPE_NAME]
6476 -- PARAMETER_TYPES ::= (SUBTYPE_NAME {, SUBTYPE_NAME})
6477 -- SUBTYPE_NAME ::= STRING_LITERAL
6479 -- SOURCE_LOCATION ::= Source_Location => SOURCE_TRACE
6480 -- SOURCE_TRACE ::= STRING_LITERAL
6482 when Pragma_Eliminate
=> Eliminate
: declare
6483 Args
: Args_List
(1 .. 5);
6484 Names
: constant Name_List
(1 .. 5) := (
6487 Name_Parameter_Types
,
6489 Name_Source_Location
);
6491 Unit_Name
: Node_Id
renames Args
(1);
6492 Entity
: Node_Id
renames Args
(2);
6493 Parameter_Types
: Node_Id
renames Args
(3);
6494 Result_Type
: Node_Id
renames Args
(4);
6495 Source_Location
: Node_Id
renames Args
(5);
6499 Check_Valid_Configuration_Pragma
;
6500 Gather_Associations
(Names
, Args
);
6502 if No
(Unit_Name
) then
6503 Error_Pragma
("missing Unit_Name argument for pragma%");
6507 and then (Present
(Parameter_Types
)
6509 Present
(Result_Type
)
6511 Present
(Source_Location
))
6513 Error_Pragma
("missing Entity argument for pragma%");
6516 if (Present
(Parameter_Types
)
6518 Present
(Result_Type
))
6520 Present
(Source_Location
)
6523 ("parameter profile and source location cannot " &
6524 "be used together in pragma%");
6527 Process_Eliminate_Pragma
6541 -- [ Convention =>] convention_IDENTIFIER,
6542 -- [ Entity =>] local_NAME
6543 -- [, [External_Name =>] static_string_EXPRESSION ]
6544 -- [, [Link_Name =>] static_string_EXPRESSION ]);
6546 when Pragma_Export
=> Export
: declare
6550 pragma Warnings
(Off
, C
);
6553 Check_Ada_83_Warning
;
6559 Check_At_Least_N_Arguments
(2);
6560 Check_At_Most_N_Arguments
(4);
6561 Process_Convention
(C
, Def_Id
);
6563 if Ekind
(Def_Id
) /= E_Constant
then
6564 Note_Possible_Modification
(Expression
(Arg2
), Sure
=> False);
6567 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
6568 Set_Exported
(Def_Id
, Arg2
);
6570 -- If the entity is a deferred constant, propagate the
6571 -- information to the full view, because gigi elaborates
6572 -- the full view only.
6574 if Ekind
(Def_Id
) = E_Constant
6575 and then Present
(Full_View
(Def_Id
))
6578 Id2
: constant Entity_Id
:= Full_View
(Def_Id
);
6580 Set_Is_Exported
(Id2
, Is_Exported
(Def_Id
));
6581 Set_First_Rep_Item
(Id2
, First_Rep_Item
(Def_Id
));
6582 Set_Interface_Name
(Id2
, Einfo
.Interface_Name
(Def_Id
));
6587 ----------------------
6588 -- Export_Exception --
6589 ----------------------
6591 -- pragma Export_Exception (
6592 -- [Internal =>] LOCAL_NAME
6593 -- [, [External =>] EXTERNAL_SYMBOL]
6594 -- [, [Form =>] Ada | VMS]
6595 -- [, [Code =>] static_integer_EXPRESSION]);
6597 when Pragma_Export_Exception
=> Export_Exception
: declare
6598 Args
: Args_List
(1 .. 4);
6599 Names
: constant Name_List
(1 .. 4) := (
6605 Internal
: Node_Id
renames Args
(1);
6606 External
: Node_Id
renames Args
(2);
6607 Form
: Node_Id
renames Args
(3);
6608 Code
: Node_Id
renames Args
(4);
6611 if Inside_A_Generic
then
6612 Error_Pragma
("pragma% cannot be used for generic entities");
6615 Gather_Associations
(Names
, Args
);
6616 Process_Extended_Import_Export_Exception_Pragma
(
6617 Arg_Internal
=> Internal
,
6618 Arg_External
=> External
,
6622 if not Is_VMS_Exception
(Entity
(Internal
)) then
6623 Set_Exported
(Entity
(Internal
), Internal
);
6625 end Export_Exception
;
6627 ---------------------
6628 -- Export_Function --
6629 ---------------------
6631 -- pragma Export_Function (
6632 -- [Internal =>] LOCAL_NAME
6633 -- [, [External =>] EXTERNAL_SYMBOL]
6634 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6635 -- [, [Result_Type =>] TYPE_DESIGNATOR]
6636 -- [, [Mechanism =>] MECHANISM]
6637 -- [, [Result_Mechanism =>] MECHANISM_NAME]);
6639 -- EXTERNAL_SYMBOL ::=
6641 -- | static_string_EXPRESSION
6643 -- PARAMETER_TYPES ::=
6645 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6647 -- TYPE_DESIGNATOR ::=
6649 -- | subtype_Name ' Access
6653 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6655 -- MECHANISM_ASSOCIATION ::=
6656 -- [formal_parameter_NAME =>] MECHANISM_NAME
6658 -- MECHANISM_NAME ::=
6661 -- | Descriptor [([Class =>] CLASS_NAME)]
6663 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6665 when Pragma_Export_Function
=> Export_Function
: declare
6666 Args
: Args_List
(1 .. 6);
6667 Names
: constant Name_List
(1 .. 6) := (
6670 Name_Parameter_Types
,
6673 Name_Result_Mechanism
);
6675 Internal
: Node_Id
renames Args
(1);
6676 External
: Node_Id
renames Args
(2);
6677 Parameter_Types
: Node_Id
renames Args
(3);
6678 Result_Type
: Node_Id
renames Args
(4);
6679 Mechanism
: Node_Id
renames Args
(5);
6680 Result_Mechanism
: Node_Id
renames Args
(6);
6684 Gather_Associations
(Names
, Args
);
6685 Process_Extended_Import_Export_Subprogram_Pragma
(
6686 Arg_Internal
=> Internal
,
6687 Arg_External
=> External
,
6688 Arg_Parameter_Types
=> Parameter_Types
,
6689 Arg_Result_Type
=> Result_Type
,
6690 Arg_Mechanism
=> Mechanism
,
6691 Arg_Result_Mechanism
=> Result_Mechanism
);
6692 end Export_Function
;
6698 -- pragma Export_Object (
6699 -- [Internal =>] LOCAL_NAME
6700 -- [, [External =>] EXTERNAL_SYMBOL]
6701 -- [, [Size =>] EXTERNAL_SYMBOL]);
6703 -- EXTERNAL_SYMBOL ::=
6705 -- | static_string_EXPRESSION
6707 -- PARAMETER_TYPES ::=
6709 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6711 -- TYPE_DESIGNATOR ::=
6713 -- | subtype_Name ' Access
6717 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6719 -- MECHANISM_ASSOCIATION ::=
6720 -- [formal_parameter_NAME =>] MECHANISM_NAME
6722 -- MECHANISM_NAME ::=
6725 -- | Descriptor [([Class =>] CLASS_NAME)]
6727 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6729 when Pragma_Export_Object
=> Export_Object
: declare
6730 Args
: Args_List
(1 .. 3);
6731 Names
: constant Name_List
(1 .. 3) := (
6736 Internal
: Node_Id
renames Args
(1);
6737 External
: Node_Id
renames Args
(2);
6738 Size
: Node_Id
renames Args
(3);
6742 Gather_Associations
(Names
, Args
);
6743 Process_Extended_Import_Export_Object_Pragma
(
6744 Arg_Internal
=> Internal
,
6745 Arg_External
=> External
,
6749 ----------------------
6750 -- Export_Procedure --
6751 ----------------------
6753 -- pragma Export_Procedure (
6754 -- [Internal =>] LOCAL_NAME
6755 -- [, [External =>] EXTERNAL_SYMBOL]
6756 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6757 -- [, [Mechanism =>] MECHANISM]);
6759 -- EXTERNAL_SYMBOL ::=
6761 -- | static_string_EXPRESSION
6763 -- PARAMETER_TYPES ::=
6765 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6767 -- TYPE_DESIGNATOR ::=
6769 -- | subtype_Name ' Access
6773 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6775 -- MECHANISM_ASSOCIATION ::=
6776 -- [formal_parameter_NAME =>] MECHANISM_NAME
6778 -- MECHANISM_NAME ::=
6781 -- | Descriptor [([Class =>] CLASS_NAME)]
6783 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6785 when Pragma_Export_Procedure
=> Export_Procedure
: declare
6786 Args
: Args_List
(1 .. 4);
6787 Names
: constant Name_List
(1 .. 4) := (
6790 Name_Parameter_Types
,
6793 Internal
: Node_Id
renames Args
(1);
6794 External
: Node_Id
renames Args
(2);
6795 Parameter_Types
: Node_Id
renames Args
(3);
6796 Mechanism
: Node_Id
renames Args
(4);
6800 Gather_Associations
(Names
, Args
);
6801 Process_Extended_Import_Export_Subprogram_Pragma
(
6802 Arg_Internal
=> Internal
,
6803 Arg_External
=> External
,
6804 Arg_Parameter_Types
=> Parameter_Types
,
6805 Arg_Mechanism
=> Mechanism
);
6806 end Export_Procedure
;
6812 -- pragma Export_Value (
6813 -- [Value =>] static_integer_EXPRESSION,
6814 -- [Link_Name =>] static_string_EXPRESSION);
6816 when Pragma_Export_Value
=>
6818 Check_Arg_Order
((Name_Value
, Name_Link_Name
));
6819 Check_Arg_Count
(2);
6821 Check_Optional_Identifier
(Arg1
, Name_Value
);
6822 Check_Arg_Is_Static_Expression
(Arg1
, Any_Integer
);
6824 Check_Optional_Identifier
(Arg2
, Name_Link_Name
);
6825 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
6827 -----------------------------
6828 -- Export_Valued_Procedure --
6829 -----------------------------
6831 -- pragma Export_Valued_Procedure (
6832 -- [Internal =>] LOCAL_NAME
6833 -- [, [External =>] EXTERNAL_SYMBOL,]
6834 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
6835 -- [, [Mechanism =>] MECHANISM]);
6837 -- EXTERNAL_SYMBOL ::=
6839 -- | static_string_EXPRESSION
6841 -- PARAMETER_TYPES ::=
6843 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
6845 -- TYPE_DESIGNATOR ::=
6847 -- | subtype_Name ' Access
6851 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
6853 -- MECHANISM_ASSOCIATION ::=
6854 -- [formal_parameter_NAME =>] MECHANISM_NAME
6856 -- MECHANISM_NAME ::=
6859 -- | Descriptor [([Class =>] CLASS_NAME)]
6861 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
6863 when Pragma_Export_Valued_Procedure
=>
6864 Export_Valued_Procedure
: declare
6865 Args
: Args_List
(1 .. 4);
6866 Names
: constant Name_List
(1 .. 4) := (
6869 Name_Parameter_Types
,
6872 Internal
: Node_Id
renames Args
(1);
6873 External
: Node_Id
renames Args
(2);
6874 Parameter_Types
: Node_Id
renames Args
(3);
6875 Mechanism
: Node_Id
renames Args
(4);
6879 Gather_Associations
(Names
, Args
);
6880 Process_Extended_Import_Export_Subprogram_Pragma
(
6881 Arg_Internal
=> Internal
,
6882 Arg_External
=> External
,
6883 Arg_Parameter_Types
=> Parameter_Types
,
6884 Arg_Mechanism
=> Mechanism
);
6885 end Export_Valued_Procedure
;
6891 -- pragma Extend_System ([Name =>] Identifier);
6893 when Pragma_Extend_System
=> Extend_System
: declare
6896 Check_Valid_Configuration_Pragma
;
6897 Check_Arg_Count
(1);
6898 Check_Optional_Identifier
(Arg1
, Name_Name
);
6899 Check_Arg_Is_Identifier
(Arg1
);
6901 Get_Name_String
(Chars
(Expression
(Arg1
)));
6904 and then Name_Buffer
(1 .. 4) = "aux_"
6906 if Present
(System_Extend_Pragma_Arg
) then
6907 if Chars
(Expression
(Arg1
)) =
6908 Chars
(Expression
(System_Extend_Pragma_Arg
))
6912 Error_Msg_Sloc
:= Sloc
(System_Extend_Pragma_Arg
);
6913 Error_Pragma
("pragma% conflicts with that #");
6917 System_Extend_Pragma_Arg
:= Arg1
;
6919 if not GNAT_Mode
then
6920 System_Extend_Unit
:= Arg1
;
6924 Error_Pragma
("incorrect name for pragma%, must be Aux_xxx");
6928 ------------------------
6929 -- Extensions_Allowed --
6930 ------------------------
6932 -- pragma Extensions_Allowed (ON | OFF);
6934 when Pragma_Extensions_Allowed
=>
6936 Check_Arg_Count
(1);
6937 Check_No_Identifiers
;
6938 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
6940 if Chars
(Expression
(Arg1
)) = Name_On
then
6941 Extensions_Allowed
:= True;
6943 Extensions_Allowed
:= False;
6950 -- pragma External (
6951 -- [ Convention =>] convention_IDENTIFIER,
6952 -- [ Entity =>] local_NAME
6953 -- [, [External_Name =>] static_string_EXPRESSION ]
6954 -- [, [Link_Name =>] static_string_EXPRESSION ]);
6956 when Pragma_External
=> External
: declare
6960 pragma Warnings
(Off
, C
);
6969 Check_At_Least_N_Arguments
(2);
6970 Check_At_Most_N_Arguments
(4);
6971 Process_Convention
(C
, Def_Id
);
6972 Note_Possible_Modification
(Expression
(Arg2
), Sure
=> False);
6973 Process_Interface_Name
(Def_Id
, Arg3
, Arg4
);
6974 Set_Exported
(Def_Id
, Arg2
);
6977 --------------------------
6978 -- External_Name_Casing --
6979 --------------------------
6981 -- pragma External_Name_Casing (
6982 -- UPPERCASE | LOWERCASE
6983 -- [, AS_IS | UPPERCASE | LOWERCASE]);
6985 when Pragma_External_Name_Casing
=> External_Name_Casing
: declare
6988 Check_No_Identifiers
;
6990 if Arg_Count
= 2 then
6992 (Arg2
, Name_As_Is
, Name_Uppercase
, Name_Lowercase
);
6994 case Chars
(Get_Pragma_Arg
(Arg2
)) is
6996 Opt
.External_Name_Exp_Casing
:= As_Is
;
6998 when Name_Uppercase
=>
6999 Opt
.External_Name_Exp_Casing
:= Uppercase
;
7001 when Name_Lowercase
=>
7002 Opt
.External_Name_Exp_Casing
:= Lowercase
;
7009 Check_Arg_Count
(1);
7012 Check_Arg_Is_One_Of
(Arg1
, Name_Uppercase
, Name_Lowercase
);
7014 case Chars
(Get_Pragma_Arg
(Arg1
)) is
7015 when Name_Uppercase
=>
7016 Opt
.External_Name_Imp_Casing
:= Uppercase
;
7018 when Name_Lowercase
=>
7019 Opt
.External_Name_Imp_Casing
:= Lowercase
;
7024 end External_Name_Casing
;
7026 --------------------------
7027 -- Favor_Top_Level --
7028 --------------------------
7030 -- pragma Favor_Top_Level (type_NAME);
7032 when Pragma_Favor_Top_Level
=> Favor_Top_Level
: declare
7033 Named_Entity
: Entity_Id
;
7037 Check_No_Identifiers
;
7038 Check_Arg_Count
(1);
7039 Check_Arg_Is_Local_Name
(Arg1
);
7040 Named_Entity
:= Entity
(Expression
(Arg1
));
7042 -- If it's an access-to-subprogram type (in particular, not a
7043 -- subtype), set the flag on that type.
7045 if Is_Access_Subprogram_Type
(Named_Entity
) then
7046 Set_Can_Use_Internal_Rep
(Named_Entity
, False);
7048 -- Otherwise it's an error (name denotes the wrong sort of entity)
7052 ("access-to-subprogram type expected", Expression
(Arg1
));
7054 end Favor_Top_Level
;
7060 -- pragma Fast_Math;
7062 when Pragma_Fast_Math
=>
7064 Check_No_Identifiers
;
7065 Check_Valid_Configuration_Pragma
;
7068 ---------------------------
7069 -- Finalize_Storage_Only --
7070 ---------------------------
7072 -- pragma Finalize_Storage_Only (first_subtype_LOCAL_NAME);
7074 when Pragma_Finalize_Storage_Only
=> Finalize_Storage
: declare
7075 Assoc
: constant Node_Id
:= Arg1
;
7076 Type_Id
: constant Node_Id
:= Expression
(Assoc
);
7080 Check_No_Identifiers
;
7081 Check_Arg_Count
(1);
7082 Check_Arg_Is_Local_Name
(Arg1
);
7084 Find_Type
(Type_Id
);
7085 Typ
:= Entity
(Type_Id
);
7088 or else Rep_Item_Too_Early
(Typ
, N
)
7092 Typ
:= Underlying_Type
(Typ
);
7095 if not Is_Controlled
(Typ
) then
7096 Error_Pragma
("pragma% must specify controlled type");
7099 Check_First_Subtype
(Arg1
);
7101 if Finalize_Storage_Only
(Typ
) then
7102 Error_Pragma
("duplicate pragma%, only one allowed");
7104 elsif not Rep_Item_Too_Late
(Typ
, N
) then
7105 Set_Finalize_Storage_Only
(Base_Type
(Typ
), True);
7107 end Finalize_Storage
;
7109 --------------------------
7110 -- Float_Representation --
7111 --------------------------
7113 -- pragma Float_Representation (FLOAT_REP[, float_type_LOCAL_NAME]);
7115 -- FLOAT_REP ::= VAX_Float | IEEE_Float
7117 when Pragma_Float_Representation
=> Float_Representation
: declare
7125 if Arg_Count
= 1 then
7126 Check_Valid_Configuration_Pragma
;
7128 Check_Arg_Count
(2);
7129 Check_Optional_Identifier
(Arg2
, Name_Entity
);
7130 Check_Arg_Is_Local_Name
(Arg2
);
7133 Check_No_Identifier
(Arg1
);
7134 Check_Arg_Is_One_Of
(Arg1
, Name_VAX_Float
, Name_IEEE_Float
);
7136 if not OpenVMS_On_Target
then
7137 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
7139 ("?pragma% ignored (applies only to Open'V'M'S)");
7145 -- One argument case
7147 if Arg_Count
= 1 then
7148 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
7149 if Opt
.Float_Format
= 'I' then
7150 Error_Pragma
("'I'E'E'E format previously specified");
7153 Opt
.Float_Format
:= 'V';
7156 if Opt
.Float_Format
= 'V' then
7157 Error_Pragma
("'V'A'X format previously specified");
7160 Opt
.Float_Format
:= 'I';
7163 Set_Standard_Fpt_Formats
;
7165 -- Two argument case
7168 Argx
:= Get_Pragma_Arg
(Arg2
);
7170 if not Is_Entity_Name
(Argx
)
7171 or else not Is_Floating_Point_Type
(Entity
(Argx
))
7174 ("second argument of% pragma must be floating-point type",
7178 Ent
:= Entity
(Argx
);
7179 Digs
:= UI_To_Int
(Digits_Value
(Ent
));
7181 -- Two arguments, VAX_Float case
7183 if Chars
(Expression
(Arg1
)) = Name_VAX_Float
then
7185 when 6 => Set_F_Float
(Ent
);
7186 when 9 => Set_D_Float
(Ent
);
7187 when 15 => Set_G_Float
(Ent
);
7191 ("wrong digits value, must be 6,9 or 15", Arg2
);
7194 -- Two arguments, IEEE_Float case
7198 when 6 => Set_IEEE_Short
(Ent
);
7199 when 15 => Set_IEEE_Long
(Ent
);
7203 ("wrong digits value, must be 6 or 15", Arg2
);
7207 end Float_Representation
;
7213 -- pragma Ident (static_string_EXPRESSION)
7215 -- Note: pragma Comment shares this processing. Pragma Comment
7216 -- is identical to Ident, except that the restriction of the
7217 -- argument to 31 characters and the placement restrictions
7218 -- are not enforced for pragma Comment.
7220 when Pragma_Ident | Pragma_Comment
=> Ident
: declare
7225 Check_Arg_Count
(1);
7226 Check_No_Identifiers
;
7227 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
7229 -- For pragma Ident, preserve DEC compatibility by requiring
7230 -- the pragma to appear in a declarative part or package spec.
7232 if Prag_Id
= Pragma_Ident
then
7233 Check_Is_In_Decl_Part_Or_Package_Spec
;
7236 Str
:= Expr_Value_S
(Expression
(Arg1
));
7243 GP
:= Parent
(Parent
(N
));
7245 if Nkind
(GP
) = N_Package_Declaration
7247 Nkind
(GP
) = N_Generic_Package_Declaration
7252 -- If we have a compilation unit, then record the ident
7253 -- value, checking for improper duplication.
7255 if Nkind
(GP
) = N_Compilation_Unit
then
7256 CS
:= Ident_String
(Current_Sem_Unit
);
7258 if Present
(CS
) then
7260 -- For Ident, we do not permit multiple instances
7262 if Prag_Id
= Pragma_Ident
then
7263 Error_Pragma
("duplicate% pragma not permitted");
7265 -- For Comment, we concatenate the string, unless we
7266 -- want to preserve the tree structure for ASIS.
7268 elsif not ASIS_Mode
then
7269 Start_String
(Strval
(CS
));
7270 Store_String_Char
(' ');
7271 Store_String_Chars
(Strval
(Str
));
7272 Set_Strval
(CS
, End_String
);
7276 -- In VMS, the effect of IDENT is achieved by passing
7277 -- IDENTIFICATION=name as a --for-linker switch.
7279 if OpenVMS_On_Target
then
7282 ("--for-linker=IDENTIFICATION=");
7283 String_To_Name_Buffer
(Strval
(Str
));
7284 Store_String_Chars
(Name_Buffer
(1 .. Name_Len
));
7286 -- Only the last processed IDENT is saved. The main
7287 -- purpose is so an IDENT associated with a main
7288 -- procedure will be used in preference to an IDENT
7289 -- associated with a with'd package.
7291 Replace_Linker_Option_String
7292 (End_String
, "--for-linker=IDENTIFICATION=");
7295 Set_Ident_String
(Current_Sem_Unit
, Str
);
7298 -- For subunits, we just ignore the Ident, since in GNAT
7299 -- these are not separate object files, and hence not
7300 -- separate units in the unit table.
7302 elsif Nkind
(GP
) = N_Subunit
then
7305 -- Otherwise we have a misplaced pragma Ident, but we ignore
7306 -- this if we are in an instantiation, since it comes from
7307 -- a generic, and has no relevance to the instantiation.
7309 elsif Prag_Id
= Pragma_Ident
then
7310 if Instantiation_Location
(Loc
) = No_Location
then
7311 Error_Pragma
("pragma% only allowed at outer level");
7317 --------------------------
7318 -- Implemented_By_Entry --
7319 --------------------------
7321 -- pragma Implemented_By_Entry (DIRECT_NAME);
7323 when Pragma_Implemented_By_Entry
=> Implemented_By_Entry
: declare
7328 Check_Arg_Count
(1);
7329 Check_No_Identifiers
;
7330 Check_Arg_Is_Identifier
(Arg1
);
7331 Check_Arg_Is_Local_Name
(Arg1
);
7332 Ent
:= Entity
(Expression
(Arg1
));
7334 -- Pragma Implemented_By_Entry must be applied only to protected
7335 -- synchronized or task interface primitives.
7337 if (Ekind
(Ent
) /= E_Function
7338 and then Ekind
(Ent
) /= E_Procedure
)
7339 or else not Present
(First_Formal
(Ent
))
7340 or else not Is_Concurrent_Interface
(Etype
(First_Formal
(Ent
)))
7343 ("pragma % must be applied to a concurrent interface " &
7347 if Einfo
.Implemented_By_Entry
(Ent
)
7348 and then Warn_On_Redundant_Constructs
7350 Error_Pragma
("?duplicate pragma%!");
7352 Set_Implemented_By_Entry
(Ent
);
7355 end Implemented_By_Entry
;
7357 -----------------------
7358 -- Implicit_Packing --
7359 -----------------------
7361 -- pragma Implicit_Packing;
7363 when Pragma_Implicit_Packing
=>
7365 Check_Arg_Count
(0);
7366 Implicit_Packing
:= True;
7373 -- [Convention =>] convention_IDENTIFIER,
7374 -- [Entity =>] local_NAME
7375 -- [, [External_Name =>] static_string_EXPRESSION ]
7376 -- [, [Link_Name =>] static_string_EXPRESSION ]);
7378 when Pragma_Import
=>
7379 Check_Ada_83_Warning
;
7385 Check_At_Least_N_Arguments
(2);
7386 Check_At_Most_N_Arguments
(4);
7387 Process_Import_Or_Interface
;
7389 ----------------------
7390 -- Import_Exception --
7391 ----------------------
7393 -- pragma Import_Exception (
7394 -- [Internal =>] LOCAL_NAME
7395 -- [, [External =>] EXTERNAL_SYMBOL]
7396 -- [, [Form =>] Ada | VMS]
7397 -- [, [Code =>] static_integer_EXPRESSION]);
7399 when Pragma_Import_Exception
=> Import_Exception
: declare
7400 Args
: Args_List
(1 .. 4);
7401 Names
: constant Name_List
(1 .. 4) := (
7407 Internal
: Node_Id
renames Args
(1);
7408 External
: Node_Id
renames Args
(2);
7409 Form
: Node_Id
renames Args
(3);
7410 Code
: Node_Id
renames Args
(4);
7413 Gather_Associations
(Names
, Args
);
7415 if Present
(External
) and then Present
(Code
) then
7417 ("cannot give both External and Code options for pragma%");
7420 Process_Extended_Import_Export_Exception_Pragma
(
7421 Arg_Internal
=> Internal
,
7422 Arg_External
=> External
,
7426 if not Is_VMS_Exception
(Entity
(Internal
)) then
7427 Set_Imported
(Entity
(Internal
));
7429 end Import_Exception
;
7431 ---------------------
7432 -- Import_Function --
7433 ---------------------
7435 -- pragma Import_Function (
7436 -- [Internal =>] LOCAL_NAME,
7437 -- [, [External =>] EXTERNAL_SYMBOL]
7438 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
7439 -- [, [Result_Type =>] SUBTYPE_MARK]
7440 -- [, [Mechanism =>] MECHANISM]
7441 -- [, [Result_Mechanism =>] MECHANISM_NAME]
7442 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
7444 -- EXTERNAL_SYMBOL ::=
7446 -- | static_string_EXPRESSION
7448 -- PARAMETER_TYPES ::=
7450 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7452 -- TYPE_DESIGNATOR ::=
7454 -- | subtype_Name ' Access
7458 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7460 -- MECHANISM_ASSOCIATION ::=
7461 -- [formal_parameter_NAME =>] MECHANISM_NAME
7463 -- MECHANISM_NAME ::=
7466 -- | Descriptor [([Class =>] CLASS_NAME)]
7468 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7470 when Pragma_Import_Function
=> Import_Function
: declare
7471 Args
: Args_List
(1 .. 7);
7472 Names
: constant Name_List
(1 .. 7) := (
7475 Name_Parameter_Types
,
7478 Name_Result_Mechanism
,
7479 Name_First_Optional_Parameter
);
7481 Internal
: Node_Id
renames Args
(1);
7482 External
: Node_Id
renames Args
(2);
7483 Parameter_Types
: Node_Id
renames Args
(3);
7484 Result_Type
: Node_Id
renames Args
(4);
7485 Mechanism
: Node_Id
renames Args
(5);
7486 Result_Mechanism
: Node_Id
renames Args
(6);
7487 First_Optional_Parameter
: Node_Id
renames Args
(7);
7491 Gather_Associations
(Names
, Args
);
7492 Process_Extended_Import_Export_Subprogram_Pragma
(
7493 Arg_Internal
=> Internal
,
7494 Arg_External
=> External
,
7495 Arg_Parameter_Types
=> Parameter_Types
,
7496 Arg_Result_Type
=> Result_Type
,
7497 Arg_Mechanism
=> Mechanism
,
7498 Arg_Result_Mechanism
=> Result_Mechanism
,
7499 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
7500 end Import_Function
;
7506 -- pragma Import_Object (
7507 -- [Internal =>] LOCAL_NAME
7508 -- [, [External =>] EXTERNAL_SYMBOL]
7509 -- [, [Size =>] EXTERNAL_SYMBOL]);
7511 -- EXTERNAL_SYMBOL ::=
7513 -- | static_string_EXPRESSION
7515 when Pragma_Import_Object
=> Import_Object
: declare
7516 Args
: Args_List
(1 .. 3);
7517 Names
: constant Name_List
(1 .. 3) := (
7522 Internal
: Node_Id
renames Args
(1);
7523 External
: Node_Id
renames Args
(2);
7524 Size
: Node_Id
renames Args
(3);
7528 Gather_Associations
(Names
, Args
);
7529 Process_Extended_Import_Export_Object_Pragma
(
7530 Arg_Internal
=> Internal
,
7531 Arg_External
=> External
,
7535 ----------------------
7536 -- Import_Procedure --
7537 ----------------------
7539 -- pragma Import_Procedure (
7540 -- [Internal =>] LOCAL_NAME
7541 -- [, [External =>] EXTERNAL_SYMBOL]
7542 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
7543 -- [, [Mechanism =>] MECHANISM]
7544 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
7546 -- EXTERNAL_SYMBOL ::=
7548 -- | static_string_EXPRESSION
7550 -- PARAMETER_TYPES ::=
7552 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7554 -- TYPE_DESIGNATOR ::=
7556 -- | subtype_Name ' Access
7560 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7562 -- MECHANISM_ASSOCIATION ::=
7563 -- [formal_parameter_NAME =>] MECHANISM_NAME
7565 -- MECHANISM_NAME ::=
7568 -- | Descriptor [([Class =>] CLASS_NAME)]
7570 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7572 when Pragma_Import_Procedure
=> Import_Procedure
: declare
7573 Args
: Args_List
(1 .. 5);
7574 Names
: constant Name_List
(1 .. 5) := (
7577 Name_Parameter_Types
,
7579 Name_First_Optional_Parameter
);
7581 Internal
: Node_Id
renames Args
(1);
7582 External
: Node_Id
renames Args
(2);
7583 Parameter_Types
: Node_Id
renames Args
(3);
7584 Mechanism
: Node_Id
renames Args
(4);
7585 First_Optional_Parameter
: Node_Id
renames Args
(5);
7589 Gather_Associations
(Names
, Args
);
7590 Process_Extended_Import_Export_Subprogram_Pragma
(
7591 Arg_Internal
=> Internal
,
7592 Arg_External
=> External
,
7593 Arg_Parameter_Types
=> Parameter_Types
,
7594 Arg_Mechanism
=> Mechanism
,
7595 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
7596 end Import_Procedure
;
7598 -----------------------------
7599 -- Import_Valued_Procedure --
7600 -----------------------------
7602 -- pragma Import_Valued_Procedure (
7603 -- [Internal =>] LOCAL_NAME
7604 -- [, [External =>] EXTERNAL_SYMBOL]
7605 -- [, [Parameter_Types =>] (PARAMETER_TYPES)]
7606 -- [, [Mechanism =>] MECHANISM]
7607 -- [, [First_Optional_Parameter =>] IDENTIFIER]);
7609 -- EXTERNAL_SYMBOL ::=
7611 -- | static_string_EXPRESSION
7613 -- PARAMETER_TYPES ::=
7615 -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
7617 -- TYPE_DESIGNATOR ::=
7619 -- | subtype_Name ' Access
7623 -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
7625 -- MECHANISM_ASSOCIATION ::=
7626 -- [formal_parameter_NAME =>] MECHANISM_NAME
7628 -- MECHANISM_NAME ::=
7631 -- | Descriptor [([Class =>] CLASS_NAME)]
7633 -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
7635 when Pragma_Import_Valued_Procedure
=>
7636 Import_Valued_Procedure
: declare
7637 Args
: Args_List
(1 .. 5);
7638 Names
: constant Name_List
(1 .. 5) := (
7641 Name_Parameter_Types
,
7643 Name_First_Optional_Parameter
);
7645 Internal
: Node_Id
renames Args
(1);
7646 External
: Node_Id
renames Args
(2);
7647 Parameter_Types
: Node_Id
renames Args
(3);
7648 Mechanism
: Node_Id
renames Args
(4);
7649 First_Optional_Parameter
: Node_Id
renames Args
(5);
7653 Gather_Associations
(Names
, Args
);
7654 Process_Extended_Import_Export_Subprogram_Pragma
(
7655 Arg_Internal
=> Internal
,
7656 Arg_External
=> External
,
7657 Arg_Parameter_Types
=> Parameter_Types
,
7658 Arg_Mechanism
=> Mechanism
,
7659 Arg_First_Optional_Parameter
=> First_Optional_Parameter
);
7660 end Import_Valued_Procedure
;
7662 ------------------------
7663 -- Initialize_Scalars --
7664 ------------------------
7666 -- pragma Initialize_Scalars;
7668 when Pragma_Initialize_Scalars
=>
7670 Check_Arg_Count
(0);
7671 Check_Valid_Configuration_Pragma
;
7672 Check_Restriction
(No_Initialize_Scalars
, N
);
7674 if not Restriction_Active
(No_Initialize_Scalars
) then
7675 Init_Or_Norm_Scalars
:= True;
7676 Initialize_Scalars
:= True;
7683 -- pragma Inline ( NAME {, NAME} );
7685 when Pragma_Inline
=>
7687 -- Pragma is active if inlining option is active
7689 Process_Inline
(Inline_Active
);
7695 -- pragma Inline_Always ( NAME {, NAME} );
7697 when Pragma_Inline_Always
=>
7698 Process_Inline
(True);
7700 --------------------
7701 -- Inline_Generic --
7702 --------------------
7704 -- pragma Inline_Generic (NAME {, NAME});
7706 when Pragma_Inline_Generic
=>
7707 Process_Generic_List
;
7709 ----------------------
7710 -- Inspection_Point --
7711 ----------------------
7713 -- pragma Inspection_Point [(object_NAME {, object_NAME})];
7715 when Pragma_Inspection_Point
=> Inspection_Point
: declare
7720 if Arg_Count
> 0 then
7723 Exp
:= Expression
(Arg
);
7726 if not Is_Entity_Name
(Exp
)
7727 or else not Is_Object
(Entity
(Exp
))
7729 Error_Pragma_Arg
("object name required", Arg
);
7736 end Inspection_Point
;
7742 -- pragma Interface (
7743 -- [ Convention =>] convention_IDENTIFIER,
7744 -- [ Entity =>] local_NAME
7745 -- [, [External_Name =>] static_string_EXPRESSION ]
7746 -- [, [Link_Name =>] static_string_EXPRESSION ]);
7748 when Pragma_Interface
=>
7755 Check_At_Least_N_Arguments
(2);
7756 Check_At_Most_N_Arguments
(4);
7757 Process_Import_Or_Interface
;
7759 --------------------
7760 -- Interface_Name --
7761 --------------------
7763 -- pragma Interface_Name (
7764 -- [ Entity =>] local_NAME
7765 -- [,[External_Name =>] static_string_EXPRESSION ]
7766 -- [,[Link_Name =>] static_string_EXPRESSION ]);
7768 when Pragma_Interface_Name
=> Interface_Name
: declare
7777 ((Name_Entity
, Name_External_Name
, Name_Link_Name
));
7778 Check_At_Least_N_Arguments
(2);
7779 Check_At_Most_N_Arguments
(3);
7780 Id
:= Expression
(Arg1
);
7783 if not Is_Entity_Name
(Id
) then
7785 ("first argument for pragma% must be entity name", Arg1
);
7786 elsif Etype
(Id
) = Any_Type
then
7789 Def_Id
:= Entity
(Id
);
7792 -- Special DEC-compatible processing for the object case, forces
7793 -- object to be imported.
7795 if Ekind
(Def_Id
) = E_Variable
then
7796 Kill_Size_Check_Code
(Def_Id
);
7797 Note_Possible_Modification
(Id
, Sure
=> False);
7799 -- Initialization is not allowed for imported variable
7801 if Present
(Expression
(Parent
(Def_Id
)))
7802 and then Comes_From_Source
(Expression
(Parent
(Def_Id
)))
7804 Error_Msg_Sloc
:= Sloc
(Def_Id
);
7806 ("no initialization allowed for declaration of& #",
7810 -- For compatibility, support VADS usage of providing both
7811 -- pragmas Interface and Interface_Name to obtain the effect
7812 -- of a single Import pragma.
7814 if Is_Imported
(Def_Id
)
7815 and then Present
(First_Rep_Item
(Def_Id
))
7816 and then Nkind
(First_Rep_Item
(Def_Id
)) = N_Pragma
7818 Pragma_Name
(First_Rep_Item
(Def_Id
)) = Name_Interface
7822 Set_Imported
(Def_Id
);
7825 Set_Is_Public
(Def_Id
);
7826 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
7829 -- Otherwise must be subprogram
7831 elsif not Is_Subprogram
(Def_Id
) then
7833 ("argument of pragma% is not subprogram", Arg1
);
7836 Check_At_Most_N_Arguments
(3);
7840 -- Loop through homonyms
7843 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
7845 if Is_Imported
(Def_Id
) then
7846 Process_Interface_Name
(Def_Id
, Arg2
, Arg3
);
7850 Hom_Id
:= Homonym
(Hom_Id
);
7852 exit when No
(Hom_Id
)
7853 or else Scope
(Hom_Id
) /= Current_Scope
;
7858 ("argument of pragma% is not imported subprogram",
7864 -----------------------
7865 -- Interrupt_Handler --
7866 -----------------------
7868 -- pragma Interrupt_Handler (handler_NAME);
7870 when Pragma_Interrupt_Handler
=>
7871 Check_Ada_83_Warning
;
7872 Check_Arg_Count
(1);
7873 Check_No_Identifiers
;
7875 if No_Run_Time_Mode
then
7876 Error_Msg_CRT
("Interrupt_Handler pragma", N
);
7878 Check_Interrupt_Or_Attach_Handler
;
7879 Process_Interrupt_Or_Attach_Handler
;
7882 ------------------------
7883 -- Interrupt_Priority --
7884 ------------------------
7886 -- pragma Interrupt_Priority [(EXPRESSION)];
7888 when Pragma_Interrupt_Priority
=> Interrupt_Priority
: declare
7889 P
: constant Node_Id
:= Parent
(N
);
7893 Check_Ada_83_Warning
;
7895 if Arg_Count
/= 0 then
7896 Arg
:= Expression
(Arg1
);
7897 Check_Arg_Count
(1);
7898 Check_No_Identifiers
;
7900 -- The expression must be analyzed in the special manner
7901 -- described in "Handling of Default and Per-Object
7902 -- Expressions" in sem.ads.
7904 Preanalyze_Spec_Expression
(Arg
, RTE
(RE_Interrupt_Priority
));
7907 if Nkind
(P
) /= N_Task_Definition
7908 and then Nkind
(P
) /= N_Protected_Definition
7913 elsif Has_Priority_Pragma
(P
) then
7914 Error_Pragma
("duplicate pragma% not allowed");
7917 Set_Has_Priority_Pragma
(P
, True);
7918 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
7920 end Interrupt_Priority
;
7922 ---------------------
7923 -- Interrupt_State --
7924 ---------------------
7926 -- pragma Interrupt_State (
7927 -- [Name =>] INTERRUPT_ID,
7928 -- [State =>] INTERRUPT_STATE);
7930 -- INTERRUPT_ID => IDENTIFIER | static_integer_EXPRESSION
7931 -- INTERRUPT_STATE => System | Runtime | User
7933 -- Note: if the interrupt id is given as an identifier, then
7934 -- it must be one of the identifiers in Ada.Interrupts.Names.
7935 -- Otherwise it is given as a static integer expression which
7936 -- must be in the range of Ada.Interrupts.Interrupt_ID.
7938 when Pragma_Interrupt_State
=> Interrupt_State
: declare
7940 Int_Id
: constant Entity_Id
:= RTE
(RE_Interrupt_ID
);
7941 -- This is the entity Ada.Interrupts.Interrupt_ID;
7943 State_Type
: Character;
7944 -- Set to 's'/'r'/'u' for System/Runtime/User
7947 -- Index to entry in Interrupt_States table
7950 -- Value of interrupt
7952 Arg1X
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
7953 -- The first argument to the pragma
7955 Int_Ent
: Entity_Id
;
7956 -- Interrupt entity in Ada.Interrupts.Names
7960 Check_Arg_Order
((Name_Name
, Name_State
));
7961 Check_Arg_Count
(2);
7963 Check_Optional_Identifier
(Arg1
, Name_Name
);
7964 Check_Optional_Identifier
(Arg2
, Name_State
);
7965 Check_Arg_Is_Identifier
(Arg2
);
7967 -- First argument is identifier
7969 if Nkind
(Arg1X
) = N_Identifier
then
7971 -- Search list of names in Ada.Interrupts.Names
7973 Int_Ent
:= First_Entity
(RTE
(RE_Names
));
7975 if No
(Int_Ent
) then
7976 Error_Pragma_Arg
("invalid interrupt name", Arg1
);
7978 elsif Chars
(Int_Ent
) = Chars
(Arg1X
) then
7979 Int_Val
:= Expr_Value
(Constant_Value
(Int_Ent
));
7983 Next_Entity
(Int_Ent
);
7986 -- First argument is not an identifier, so it must be a
7987 -- static expression of type Ada.Interrupts.Interrupt_ID.
7990 Check_Arg_Is_Static_Expression
(Arg1
, Any_Integer
);
7991 Int_Val
:= Expr_Value
(Arg1X
);
7993 if Int_Val
< Expr_Value
(Type_Low_Bound
(Int_Id
))
7995 Int_Val
> Expr_Value
(Type_High_Bound
(Int_Id
))
7998 ("value not in range of type " &
7999 """Ada.Interrupts.Interrupt_'I'D""", Arg1
);
8005 case Chars
(Get_Pragma_Arg
(Arg2
)) is
8006 when Name_Runtime
=> State_Type
:= 'r';
8007 when Name_System
=> State_Type
:= 's';
8008 when Name_User
=> State_Type
:= 'u';
8011 Error_Pragma_Arg
("invalid interrupt state", Arg2
);
8014 -- Check if entry is already stored
8016 IST_Num
:= Interrupt_States
.First
;
8018 -- If entry not found, add it
8020 if IST_Num
> Interrupt_States
.Last
then
8021 Interrupt_States
.Append
8022 ((Interrupt_Number
=> UI_To_Int
(Int_Val
),
8023 Interrupt_State
=> State_Type
,
8024 Pragma_Loc
=> Loc
));
8027 -- Case of entry for the same entry
8029 elsif Int_Val
= Interrupt_States
.Table
(IST_Num
).
8032 -- If state matches, done, no need to make redundant entry
8035 State_Type
= Interrupt_States
.Table
(IST_Num
).
8038 -- Otherwise if state does not match, error
8041 Interrupt_States
.Table
(IST_Num
).Pragma_Loc
;
8043 ("state conflicts with that given #", Arg2
);
8047 IST_Num
:= IST_Num
+ 1;
8049 end Interrupt_State
;
8051 ----------------------
8052 -- Java_Constructor --
8053 ----------------------
8055 -- pragma Java_Constructor ([Entity =>] LOCAL_NAME);
8057 -- Also handles pragma CIL_Constructor
8059 when Pragma_CIL_Constructor | Pragma_Java_Constructor
=>
8060 Java_Constructor
: declare
8064 Convention
: Convention_Id
;
8068 Check_Arg_Count
(1);
8069 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8070 Check_Arg_Is_Local_Name
(Arg1
);
8072 Id
:= Expression
(Arg1
);
8073 Find_Program_Unit_Name
(Id
);
8075 -- If we did not find the name, we are done
8077 if Etype
(Id
) = Any_Type
then
8082 when Pragma_CIL_Constructor
=> Convention
:= Convention_CIL
;
8083 when Pragma_Java_Constructor
=> Convention
:= Convention_Java
;
8084 when others => null;
8087 Hom_Id
:= Entity
(Id
);
8089 -- Loop through homonyms
8092 Def_Id
:= Get_Base_Subprogram
(Hom_Id
);
8094 -- The constructor is required to be a function returning an
8095 -- access type whose designated type has convention Java/CIL.
8097 if Ekind
(Def_Id
) = E_Function
8099 (Is_Value_Type
(Etype
(Def_Id
))
8101 (Ekind
(Etype
(Def_Id
)) in Access_Kind
8104 (Designated_Type
(Etype
(Def_Id
))) = Convention
8107 (Root_Type
(Designated_Type
(Etype
(Def_Id
)))) =
8110 Set_Is_Constructor
(Def_Id
);
8111 Set_Convention
(Def_Id
, Convention
);
8112 Set_Is_Imported
(Def_Id
);
8115 if Convention
= Convention_Java
then
8117 ("pragma% requires function returning a " &
8118 "'Java access type", Arg1
);
8120 pragma Assert
(Convention
= Convention_CIL
);
8122 ("pragma% requires function returning a " &
8123 "'CIL access type", Arg1
);
8127 Hom_Id
:= Homonym
(Hom_Id
);
8129 exit when No
(Hom_Id
) or else Scope
(Hom_Id
) /= Current_Scope
;
8131 end Java_Constructor
;
8133 ----------------------
8134 -- Java_Interface --
8135 ----------------------
8137 -- pragma Java_Interface ([Entity =>] LOCAL_NAME);
8139 when Pragma_Java_Interface
=> Java_Interface
: declare
8145 Check_Arg_Count
(1);
8146 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8147 Check_Arg_Is_Local_Name
(Arg1
);
8149 Arg
:= Expression
(Arg1
);
8152 if Etype
(Arg
) = Any_Type
then
8156 if not Is_Entity_Name
(Arg
)
8157 or else not Is_Type
(Entity
(Arg
))
8159 Error_Pragma_Arg
("pragma% requires a type mark", Arg1
);
8162 Typ
:= Underlying_Type
(Entity
(Arg
));
8164 -- For now we simply check some of the semantic constraints
8165 -- on the type. This currently leaves out some restrictions
8166 -- on interface types, namely that the parent type must be
8167 -- java.lang.Object.Typ and that all primitives of the type
8168 -- should be declared abstract. ???
8170 if not Is_Tagged_Type
(Typ
) or else not Is_Abstract_Type
(Typ
) then
8171 Error_Pragma_Arg
("pragma% requires an abstract "
8172 & "tagged type", Arg1
);
8174 elsif not Has_Discriminants
(Typ
)
8175 or else Ekind
(Etype
(First_Discriminant
(Typ
)))
8176 /= E_Anonymous_Access_Type
8178 not Is_Class_Wide_Type
8179 (Designated_Type
(Etype
(First_Discriminant
(Typ
))))
8182 ("type must have a class-wide access discriminant", Arg1
);
8190 -- pragma Keep_Names ([On => ] local_NAME);
8192 when Pragma_Keep_Names
=> Keep_Names
: declare
8197 Check_Arg_Count
(1);
8198 Check_Optional_Identifier
(Arg1
, Name_On
);
8199 Check_Arg_Is_Local_Name
(Arg1
);
8201 Arg
:= Expression
(Arg1
);
8204 if Etype
(Arg
) = Any_Type
then
8208 if not Is_Entity_Name
(Arg
)
8209 or else Ekind
(Entity
(Arg
)) /= E_Enumeration_Type
8212 ("pragma% requires a local enumeration type", Arg1
);
8215 Set_Discard_Names
(Entity
(Arg
), False);
8222 -- pragma License (RESTRICTED | UNRESTRICTED | GPL | MODIFIED_GPL);
8224 when Pragma_License
=>
8226 Check_Arg_Count
(1);
8227 Check_No_Identifiers
;
8228 Check_Valid_Configuration_Pragma
;
8229 Check_Arg_Is_Identifier
(Arg1
);
8232 Sind
: constant Source_File_Index
:=
8233 Source_Index
(Current_Sem_Unit
);
8236 case Chars
(Get_Pragma_Arg
(Arg1
)) is
8238 Set_License
(Sind
, GPL
);
8240 when Name_Modified_GPL
=>
8241 Set_License
(Sind
, Modified_GPL
);
8243 when Name_Restricted
=>
8244 Set_License
(Sind
, Restricted
);
8246 when Name_Unrestricted
=>
8247 Set_License
(Sind
, Unrestricted
);
8250 Error_Pragma_Arg
("invalid license name", Arg1
);
8258 -- pragma Link_With (string_EXPRESSION {, string_EXPRESSION});
8260 when Pragma_Link_With
=> Link_With
: declare
8266 if Operating_Mode
= Generate_Code
8267 and then In_Extended_Main_Source_Unit
(N
)
8269 Check_At_Least_N_Arguments
(1);
8270 Check_No_Identifiers
;
8271 Check_Is_In_Decl_Part_Or_Package_Spec
;
8272 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
8276 while Present
(Arg
) loop
8277 Check_Arg_Is_Static_Expression
(Arg
, Standard_String
);
8279 -- Store argument, converting sequences of spaces
8280 -- to a single null character (this is one of the
8281 -- differences in processing between Link_With
8282 -- and Linker_Options).
8285 C
: constant Char_Code
:= Get_Char_Code
(' ');
8286 S
: constant String_Id
:=
8287 Strval
(Expr_Value_S
(Expression
(Arg
)));
8288 L
: constant Nat
:= String_Length
(S
);
8291 procedure Skip_Spaces
;
8292 -- Advance F past any spaces
8298 procedure Skip_Spaces
is
8300 while F
<= L
and then Get_String_Char
(S
, F
) = C
loop
8305 -- Start of processing for Arg_Store
8308 Skip_Spaces
; -- skip leading spaces
8310 -- Loop through characters, changing any embedded
8311 -- sequence of spaces to a single null character
8312 -- (this is how Link_With/Linker_Options differ)
8315 if Get_String_Char
(S
, F
) = C
then
8318 Store_String_Char
(ASCII
.NUL
);
8321 Store_String_Char
(Get_String_Char
(S
, F
));
8329 if Present
(Arg
) then
8330 Store_String_Char
(ASCII
.NUL
);
8334 Store_Linker_Option_String
(End_String
);
8342 -- pragma Linker_Alias (
8343 -- [Entity =>] LOCAL_NAME
8344 -- [Target =>] static_string_EXPRESSION);
8346 when Pragma_Linker_Alias
=>
8348 Check_Arg_Order
((Name_Entity
, Name_Target
));
8349 Check_Arg_Count
(2);
8350 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8351 Check_Optional_Identifier
(Arg2
, Name_Target
);
8352 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
8353 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
8355 -- The only processing required is to link this item on to the
8356 -- list of rep items for the given entity. This is accomplished
8357 -- by the call to Rep_Item_Too_Late (when no error is detected
8358 -- and False is returned).
8360 if Rep_Item_Too_Late
(Entity
(Expression
(Arg1
)), N
) then
8363 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
8366 ------------------------
8367 -- Linker_Constructor --
8368 ------------------------
8370 -- pragma Linker_Constructor (procedure_LOCAL_NAME);
8372 -- Code is shared with Linker_Destructor
8374 -----------------------
8375 -- Linker_Destructor --
8376 -----------------------
8378 -- pragma Linker_Destructor (procedure_LOCAL_NAME);
8380 when Pragma_Linker_Constructor |
8381 Pragma_Linker_Destructor
=>
8382 Linker_Constructor
: declare
8388 Check_Arg_Count
(1);
8389 Check_No_Identifiers
;
8390 Check_Arg_Is_Local_Name
(Arg1
);
8391 Arg1_X
:= Expression
(Arg1
);
8393 Proc
:= Find_Unique_Parameterless_Procedure
(Arg1_X
, Arg1
);
8395 if not Is_Library_Level_Entity
(Proc
) then
8397 ("argument for pragma% must be library level entity", Arg1
);
8400 -- The only processing required is to link this item on to the
8401 -- list of rep items for the given entity. This is accomplished
8402 -- by the call to Rep_Item_Too_Late (when no error is detected
8403 -- and False is returned).
8405 if Rep_Item_Too_Late
(Proc
, N
) then
8408 Set_Has_Gigi_Rep_Item
(Proc
);
8410 end Linker_Constructor
;
8412 --------------------
8413 -- Linker_Options --
8414 --------------------
8416 -- pragma Linker_Options (string_EXPRESSION {, string_EXPRESSION});
8418 when Pragma_Linker_Options
=> Linker_Options
: declare
8422 Check_Ada_83_Warning
;
8423 Check_No_Identifiers
;
8424 Check_Arg_Count
(1);
8425 Check_Is_In_Decl_Part_Or_Package_Spec
;
8426 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
8427 Start_String
(Strval
(Expr_Value_S
(Expression
(Arg1
))));
8430 while Present
(Arg
) loop
8431 Check_Arg_Is_Static_Expression
(Arg
, Standard_String
);
8432 Store_String_Char
(ASCII
.NUL
);
8433 Store_String_Chars
(Strval
(Expr_Value_S
(Expression
(Arg
))));
8437 if Operating_Mode
= Generate_Code
8438 and then In_Extended_Main_Source_Unit
(N
)
8440 Store_Linker_Option_String
(End_String
);
8444 --------------------
8445 -- Linker_Section --
8446 --------------------
8448 -- pragma Linker_Section (
8449 -- [Entity =>] LOCAL_NAME
8450 -- [Section =>] static_string_EXPRESSION);
8452 when Pragma_Linker_Section
=>
8454 Check_Arg_Order
((Name_Entity
, Name_Section
));
8455 Check_Arg_Count
(2);
8456 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8457 Check_Optional_Identifier
(Arg2
, Name_Section
);
8458 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
8459 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
8461 -- This pragma applies only to objects
8463 if not Is_Object
(Entity
(Expression
(Arg1
))) then
8464 Error_Pragma_Arg
("pragma% applies only to objects", Arg1
);
8467 -- The only processing required is to link this item on to the
8468 -- list of rep items for the given entity. This is accomplished
8469 -- by the call to Rep_Item_Too_Late (when no error is detected
8470 -- and False is returned).
8472 if Rep_Item_Too_Late
(Entity
(Expression
(Arg1
)), N
) then
8475 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
8482 -- pragma List (On | Off)
8484 -- There is nothing to do here, since we did all the processing
8485 -- for this pragma in Par.Prag (so that it works properly even in
8486 -- syntax only mode)
8491 --------------------
8492 -- Locking_Policy --
8493 --------------------
8495 -- pragma Locking_Policy (policy_IDENTIFIER);
8497 when Pragma_Locking_Policy
=> declare
8501 Check_Ada_83_Warning
;
8502 Check_Arg_Count
(1);
8503 Check_No_Identifiers
;
8504 Check_Arg_Is_Locking_Policy
(Arg1
);
8505 Check_Valid_Configuration_Pragma
;
8506 Get_Name_String
(Chars
(Expression
(Arg1
)));
8507 LP
:= Fold_Upper
(Name_Buffer
(1));
8509 if Locking_Policy
/= ' '
8510 and then Locking_Policy
/= LP
8512 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
8513 Error_Pragma
("locking policy incompatible with policy#");
8515 -- Set new policy, but always preserve System_Location since
8516 -- we like the error message with the run time name.
8519 Locking_Policy
:= LP
;
8521 if Locking_Policy_Sloc
/= System_Location
then
8522 Locking_Policy_Sloc
:= Loc
;
8531 -- pragma Long_Float (D_Float | G_Float);
8533 when Pragma_Long_Float
=>
8535 Check_Valid_Configuration_Pragma
;
8536 Check_Arg_Count
(1);
8537 Check_No_Identifier
(Arg1
);
8538 Check_Arg_Is_One_Of
(Arg1
, Name_D_Float
, Name_G_Float
);
8540 if not OpenVMS_On_Target
then
8541 Error_Pragma
("?pragma% ignored (applies only to Open'V'M'S)");
8546 if Chars
(Expression
(Arg1
)) = Name_D_Float
then
8547 if Opt
.Float_Format_Long
= 'G' then
8548 Error_Pragma
("G_Float previously specified");
8551 Opt
.Float_Format_Long
:= 'D';
8553 -- G_Float case (this is the default, does not need overriding)
8556 if Opt
.Float_Format_Long
= 'D' then
8557 Error_Pragma
("D_Float previously specified");
8560 Opt
.Float_Format_Long
:= 'G';
8563 Set_Standard_Fpt_Formats
;
8565 -----------------------
8566 -- Machine_Attribute --
8567 -----------------------
8569 -- pragma Machine_Attribute (
8570 -- [Entity =>] LOCAL_NAME,
8571 -- [Attribute_Name =>] static_string_EXPRESSION
8572 -- [, [Info =>] static_string_EXPRESSION] );
8574 when Pragma_Machine_Attribute
=> Machine_Attribute
: declare
8579 Check_Arg_Order
((Name_Entity
, Name_Attribute_Name
, Name_Info
));
8581 if Arg_Count
= 3 then
8582 Check_Optional_Identifier
(Arg3
, Name_Info
);
8583 Check_Arg_Is_Static_Expression
(Arg3
, Standard_String
);
8585 Check_Arg_Count
(2);
8588 Check_Optional_Identifier
(Arg1
, Name_Entity
);
8589 Check_Optional_Identifier
(Arg2
, Name_Attribute_Name
);
8590 Check_Arg_Is_Local_Name
(Arg1
);
8591 Check_Arg_Is_Static_Expression
(Arg2
, Standard_String
);
8592 Def_Id
:= Entity
(Expression
(Arg1
));
8594 if Is_Access_Type
(Def_Id
) then
8595 Def_Id
:= Designated_Type
(Def_Id
);
8598 if Rep_Item_Too_Early
(Def_Id
, N
) then
8602 Def_Id
:= Underlying_Type
(Def_Id
);
8604 -- The only processing required is to link this item on to the
8605 -- list of rep items for the given entity. This is accomplished
8606 -- by the call to Rep_Item_Too_Late (when no error is detected
8607 -- and False is returned).
8609 if Rep_Item_Too_Late
(Def_Id
, N
) then
8612 Set_Has_Gigi_Rep_Item
(Entity
(Expression
(Arg1
)));
8614 end Machine_Attribute
;
8621 -- (MAIN_OPTION [, MAIN_OPTION]);
8624 -- [STACK_SIZE =>] static_integer_EXPRESSION
8625 -- | [TASK_STACK_SIZE_DEFAULT =>] static_integer_EXPRESSION
8626 -- | [TIME_SLICING_ENABLED =>] static_boolean_EXPRESSION
8628 when Pragma_Main
=> Main
: declare
8629 Args
: Args_List
(1 .. 3);
8630 Names
: constant Name_List
(1 .. 3) := (
8632 Name_Task_Stack_Size_Default
,
8633 Name_Time_Slicing_Enabled
);
8639 Gather_Associations
(Names
, Args
);
8641 for J
in 1 .. 2 loop
8642 if Present
(Args
(J
)) then
8643 Check_Arg_Is_Static_Expression
(Args
(J
), Any_Integer
);
8647 if Present
(Args
(3)) then
8648 Check_Arg_Is_Static_Expression
(Args
(3), Standard_Boolean
);
8652 while Present
(Nod
) loop
8653 if Nkind
(Nod
) = N_Pragma
8654 and then Pragma_Name
(Nod
) = Name_Main
8656 Error_Msg_Name_1
:= Pname
;
8657 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
8668 -- pragma Main_Storage
8669 -- (MAIN_STORAGE_OPTION [, MAIN_STORAGE_OPTION]);
8671 -- MAIN_STORAGE_OPTION ::=
8672 -- [WORKING_STORAGE =>] static_SIMPLE_EXPRESSION
8673 -- | [TOP_GUARD =>] static_SIMPLE_EXPRESSION
8675 when Pragma_Main_Storage
=> Main_Storage
: declare
8676 Args
: Args_List
(1 .. 2);
8677 Names
: constant Name_List
(1 .. 2) := (
8678 Name_Working_Storage
,
8685 Gather_Associations
(Names
, Args
);
8687 for J
in 1 .. 2 loop
8688 if Present
(Args
(J
)) then
8689 Check_Arg_Is_Static_Expression
(Args
(J
), Any_Integer
);
8693 Check_In_Main_Program
;
8696 while Present
(Nod
) loop
8697 if Nkind
(Nod
) = N_Pragma
8698 and then Pragma_Name
(Nod
) = Name_Main_Storage
8700 Error_Msg_Name_1
:= Pname
;
8701 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
8712 -- pragma Memory_Size (NUMERIC_LITERAL)
8714 when Pragma_Memory_Size
=>
8717 -- Memory size is simply ignored
8719 Check_No_Identifiers
;
8720 Check_Arg_Count
(1);
8721 Check_Arg_Is_Integer_Literal
(Arg1
);
8729 -- The only correct use of this pragma is on its own in a file, in
8730 -- which case it is specially processed (see Gnat1drv.Check_Bad_Body
8731 -- and Frontend, which use Sinput.L.Source_File_Is_Pragma_No_Body to
8732 -- check for a file containing nothing but a No_Body pragma). If we
8733 -- attempt to process it during normal semantics processing, it means
8734 -- it was misplaced.
8736 when Pragma_No_Body
=>
8743 -- pragma No_Return (procedure_LOCAL_NAME {, procedure_Local_Name});
8745 when Pragma_No_Return
=> No_Return
: declare
8753 Check_At_Least_N_Arguments
(1);
8755 -- Loop through arguments of pragma
8758 while Present
(Arg
) loop
8759 Check_Arg_Is_Local_Name
(Arg
);
8760 Id
:= Expression
(Arg
);
8763 if not Is_Entity_Name
(Id
) then
8764 Error_Pragma_Arg
("entity name required", Arg
);
8767 if Etype
(Id
) = Any_Type
then
8771 -- Loop to find matching procedures
8776 and then Scope
(E
) = Current_Scope
8778 if Ekind
(E
) = E_Procedure
8779 or else Ekind
(E
) = E_Generic_Procedure
8783 -- Set flag on any alias as well
8785 if Is_Overloadable
(E
) and then Present
(Alias
(E
)) then
8786 Set_No_Return
(Alias
(E
));
8796 Error_Pragma_Arg
("no procedure & found for pragma%", Arg
);
8803 ------------------------
8804 -- No_Strict_Aliasing --
8805 ------------------------
8807 -- pragma No_Strict_Aliasing [([Entity =>] type_LOCAL_NAME)];
8809 when Pragma_No_Strict_Aliasing
=> No_Strict_Alias
: declare
8814 Check_At_Most_N_Arguments
(1);
8816 if Arg_Count
= 0 then
8817 Check_Valid_Configuration_Pragma
;
8818 Opt
.No_Strict_Aliasing
:= True;
8821 Check_Optional_Identifier
(Arg2
, Name_Entity
);
8822 Check_Arg_Is_Local_Name
(Arg1
);
8823 E_Id
:= Entity
(Expression
(Arg1
));
8825 if E_Id
= Any_Type
then
8827 elsif No
(E_Id
) or else not Is_Access_Type
(E_Id
) then
8828 Error_Pragma_Arg
("pragma% requires access type", Arg1
);
8831 Set_No_Strict_Aliasing
(Implementation_Base_Type
(E_Id
));
8833 end No_Strict_Alias
;
8839 -- pragma Obsolescent [(
8840 -- [Entity => NAME,]
8841 -- [(static_string_EXPRESSION [, Ada_05])];
8843 when Pragma_Obsolescent
=> Obsolescent
: declare
8847 procedure Set_Obsolescent
(E
: Entity_Id
);
8848 -- Given an entity Ent, mark it as obsolescent if appropriate
8850 ---------------------
8851 -- Set_Obsolescent --
8852 ---------------------
8854 procedure Set_Obsolescent
(E
: Entity_Id
) is
8863 -- Entity name was given
8865 if Present
(Ename
) then
8867 -- If entity name matches, we are fine
8869 if Chars
(Ename
) = Chars
(Ent
) then
8872 -- If entity name does not match, only possibility is an
8873 -- enumeration literal from an enumeration type declaration.
8875 elsif Ekind
(Ent
) /= E_Enumeration_Type
then
8877 ("pragma % entity name does not match declaration");
8880 Ent
:= First_Literal
(E
);
8884 ("pragma % entity name does not match any " &
8885 "enumeration literal");
8887 elsif Chars
(Ent
) = Chars
(Ename
) then
8891 Ent
:= Next_Literal
(Ent
);
8897 -- Ent points to entity to be marked
8899 if Arg_Count
>= 1 then
8901 -- Deal with static string argument
8903 Check_Arg_Is_Static_Expression
(Arg1
, Standard_String
);
8904 S
:= Strval
(Expression
(Arg1
));
8906 for J
in 1 .. String_Length
(S
) loop
8907 if not In_Character_Range
(Get_String_Char
(S
, J
)) then
8909 ("pragma% argument does not allow wide characters",
8914 Obsolescent_Warnings
.Append
8915 ((Ent
=> Ent
, Msg
=> Strval
(Expression
(Arg1
))));
8917 -- Check for Ada_05 parameter
8919 if Arg_Count
/= 1 then
8920 Check_Arg_Count
(2);
8923 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg2
);
8926 Check_Arg_Is_Identifier
(Argx
);
8928 if Chars
(Argx
) /= Name_Ada_05
then
8929 Error_Msg_Name_2
:= Name_Ada_05
;
8931 ("only allowed argument for pragma% is %", Argx
);
8934 if Ada_Version_Explicit
< Ada_05
8935 or else not Warn_On_Ada_2005_Compatibility
8943 -- Set flag if pragma active
8946 Set_Is_Obsolescent
(Ent
);
8950 end Set_Obsolescent
;
8952 -- Start of processing for pragma Obsolescent
8957 Check_At_Most_N_Arguments
(3);
8959 -- See if first argument specifies an entity name
8962 and then Chars
(Arg1
) = Name_Entity
8964 Ename
:= Get_Pragma_Arg
(Arg1
);
8966 if Nkind
(Ename
) /= N_Character_Literal
8968 Nkind
(Ename
) /= N_Identifier
8970 Nkind
(Ename
) /= N_Operator_Symbol
8972 Error_Pragma_Arg
("entity name expected for pragma%", Arg1
);
8975 -- Eliminate first argument, so we can share processing
8979 Arg_Count
:= Arg_Count
- 1;
8981 -- No Entity name argument given
8987 Check_No_Identifiers
;
8989 -- Get immediately preceding declaration
8992 while Present
(Decl
) and then Nkind
(Decl
) = N_Pragma
loop
8996 -- Cases where we do not follow anything other than another pragma
9000 -- First case: library level compilation unit declaration with
9001 -- the pragma immediately following the declaration.
9003 if Nkind
(Parent
(N
)) = N_Compilation_Unit_Aux
then
9005 (Defining_Entity
(Unit
(Parent
(Parent
(N
)))));
9008 -- Case 2: library unit placement for package
9012 Ent
: constant Entity_Id
:= Find_Lib_Unit_Name
;
9014 if Ekind
(Ent
) = E_Package
9015 or else Ekind
(Ent
) = E_Generic_Package
9017 Set_Obsolescent
(Ent
);
9023 -- Cases where we must follow a declaration
9026 if Nkind
(Decl
) not in N_Declaration
9027 and then Nkind
(Decl
) not in N_Later_Decl_Item
9028 and then Nkind
(Decl
) not in N_Generic_Declaration
9031 ("pragma% misplaced, " &
9032 "must immediately follow a declaration");
9035 Set_Obsolescent
(Defining_Entity
(Decl
));
9045 -- pragma No_Run_Time
9047 -- Note: this pragma is retained for backwards compatibility.
9048 -- See body of Rtsfind for full details on its handling.
9050 when Pragma_No_Run_Time
=>
9052 Check_Valid_Configuration_Pragma
;
9053 Check_Arg_Count
(0);
9055 No_Run_Time_Mode
:= True;
9056 Configurable_Run_Time_Mode
:= True;
9058 -- Set Duration to 32 bits if word size is 32
9060 if Ttypes
.System_Word_Size
= 32 then
9061 Duration_32_Bits_On_Target
:= True;
9064 -- Set appropriate restrictions
9066 Set_Restriction
(No_Finalization
, N
);
9067 Set_Restriction
(No_Exception_Handlers
, N
);
9068 Set_Restriction
(Max_Tasks
, N
, 0);
9069 Set_Restriction
(No_Tasking
, N
);
9071 -----------------------
9072 -- Normalize_Scalars --
9073 -----------------------
9075 -- pragma Normalize_Scalars;
9077 when Pragma_Normalize_Scalars
=>
9078 Check_Ada_83_Warning
;
9079 Check_Arg_Count
(0);
9080 Check_Valid_Configuration_Pragma
;
9081 Normalize_Scalars
:= True;
9082 Init_Or_Norm_Scalars
:= True;
9088 -- pragma Optimize (Time | Space | Off);
9090 -- The actual check for optimize is done in Gigi. Note that this
9091 -- pragma does not actually change the optimization setting, it
9092 -- simply checks that it is consistent with the pragma.
9094 when Pragma_Optimize
=>
9095 Check_No_Identifiers
;
9096 Check_Arg_Count
(1);
9097 Check_Arg_Is_One_Of
(Arg1
, Name_Time
, Name_Space
, Name_Off
);
9099 ------------------------
9100 -- Optimize_Alignment --
9101 ------------------------
9103 -- pragma Optimize_Alignment (Time | Space | Off);
9105 when Pragma_Optimize_Alignment
=>
9107 Check_No_Identifiers
;
9108 Check_Arg_Count
(1);
9109 Check_Valid_Configuration_Pragma
;
9112 Nam
: constant Name_Id
:= Chars
(Get_Pragma_Arg
(Arg1
));
9116 Opt
.Optimize_Alignment
:= 'T';
9118 Opt
.Optimize_Alignment
:= 'S';
9120 Opt
.Optimize_Alignment
:= 'O';
9122 Error_Pragma_Arg
("invalid argument for pragma%", Arg1
);
9126 -- Set indication that mode is set locally. If we are in fact in a
9127 -- configuration pragma file, this setting is harmless since the
9128 -- switch will get reset anyway at the start of each unit.
9130 Optimize_Alignment_Local
:= True;
9136 -- pragma Pack (first_subtype_LOCAL_NAME);
9138 when Pragma_Pack
=> Pack
: declare
9139 Assoc
: constant Node_Id
:= Arg1
;
9144 Check_No_Identifiers
;
9145 Check_Arg_Count
(1);
9146 Check_Arg_Is_Local_Name
(Arg1
);
9148 Type_Id
:= Expression
(Assoc
);
9149 Find_Type
(Type_Id
);
9150 Typ
:= Entity
(Type_Id
);
9153 or else Rep_Item_Too_Early
(Typ
, N
)
9157 Typ
:= Underlying_Type
(Typ
);
9160 if not Is_Array_Type
(Typ
) and then not Is_Record_Type
(Typ
) then
9161 Error_Pragma
("pragma% must specify array or record type");
9164 Check_First_Subtype
(Arg1
);
9166 if Has_Pragma_Pack
(Typ
) then
9167 Error_Pragma
("duplicate pragma%, only one allowed");
9171 elsif Is_Array_Type
(Typ
) then
9173 -- Pack not allowed for aliased or atomic components
9175 if Has_Aliased_Components
(Base_Type
(Typ
)) then
9177 ("pragma% ignored, cannot pack aliased components?");
9179 elsif Has_Atomic_Components
(Typ
)
9180 or else Is_Atomic
(Component_Type
(Typ
))
9183 ("?pragma% ignored, cannot pack atomic components");
9186 -- If we had an explicit component size given, then we do not
9187 -- let Pack override this given size. We also give a warning
9188 -- that Pack is being ignored unless we can tell for sure that
9189 -- the Pack would not have had any effect anyway.
9191 if Has_Component_Size_Clause
(Typ
) then
9192 if Known_Static_RM_Size
(Component_Type
(Typ
))
9194 RM_Size
(Component_Type
(Typ
)) = Component_Size
(Typ
)
9199 ("?pragma% ignored, explicit component size given");
9202 -- If no prior array component size given, Pack is effective
9205 if not Rep_Item_Too_Late
(Typ
, N
) then
9206 if VM_Target
= No_VM
then
9207 Set_Is_Packed
(Base_Type
(Typ
));
9208 elsif not GNAT_Mode
then
9210 ("?pragma% ignored in this configuration");
9213 Set_Has_Pragma_Pack
(Base_Type
(Typ
));
9214 Set_Has_Non_Standard_Rep
(Base_Type
(Typ
));
9218 -- For record types, the pack is always effective
9220 else pragma Assert
(Is_Record_Type
(Typ
));
9221 if not Rep_Item_Too_Late
(Typ
, N
) then
9222 if VM_Target
= No_VM
then
9223 Set_Is_Packed
(Base_Type
(Typ
));
9224 elsif not GNAT_Mode
then
9225 Error_Pragma
("?pragma% ignored in this configuration");
9228 Set_Has_Pragma_Pack
(Base_Type
(Typ
));
9229 Set_Has_Non_Standard_Rep
(Base_Type
(Typ
));
9240 -- There is nothing to do here, since we did all the processing
9241 -- for this pragma in Par.Prag (so that it works properly even in
9242 -- syntax only mode)
9251 -- pragma Passive [(PASSIVE_FORM)];
9253 -- PASSIVE_FORM ::= Semaphore | No
9255 when Pragma_Passive
=>
9258 if Nkind
(Parent
(N
)) /= N_Task_Definition
then
9259 Error_Pragma
("pragma% must be within task definition");
9262 if Arg_Count
/= 0 then
9263 Check_Arg_Count
(1);
9264 Check_Arg_Is_One_Of
(Arg1
, Name_Semaphore
, Name_No
);
9267 ----------------------------------
9268 -- Preelaborable_Initialization --
9269 ----------------------------------
9271 -- pragma Preelaborable_Initialization (DIRECT_NAME);
9273 when Pragma_Preelaborable_Initialization
=> Preelab_Init
: declare
9278 Check_Arg_Count
(1);
9279 Check_No_Identifiers
;
9280 Check_Arg_Is_Identifier
(Arg1
);
9281 Check_Arg_Is_Local_Name
(Arg1
);
9282 Check_First_Subtype
(Arg1
);
9283 Ent
:= Entity
(Expression
(Arg1
));
9285 if not Is_Private_Type
(Ent
)
9286 and then not Is_Protected_Type
(Ent
)
9289 ("pragma % can only be applied to private or protected type",
9293 -- Give an error if the pragma is applied to a protected type that
9294 -- does not qualify (due to having entries, or due to components
9295 -- that do not qualify).
9297 if Is_Protected_Type
(Ent
)
9298 and then not Has_Preelaborable_Initialization
(Ent
)
9301 ("protected type & does not have preelaborable " &
9302 "initialization", Ent
);
9304 -- Otherwise mark the type as definitely having preelaborable
9308 Set_Known_To_Have_Preelab_Init
(Ent
);
9311 if Has_Pragma_Preelab_Init
(Ent
)
9312 and then Warn_On_Redundant_Constructs
9314 Error_Pragma
("?duplicate pragma%!");
9316 Set_Has_Pragma_Preelab_Init
(Ent
);
9324 -- pragma Polling (ON | OFF);
9326 when Pragma_Polling
=>
9328 Check_Arg_Count
(1);
9329 Check_No_Identifiers
;
9330 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
9331 Polling_Required
:= (Chars
(Expression
(Arg1
)) = Name_On
);
9333 --------------------
9334 -- Persistent_BSS --
9335 --------------------
9337 when Pragma_Persistent_BSS
=> Persistent_BSS
: declare
9344 Check_At_Most_N_Arguments
(1);
9346 -- Case of application to specific object (one argument)
9348 if Arg_Count
= 1 then
9349 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
9351 if not Is_Entity_Name
(Expression
(Arg1
))
9353 (Ekind
(Entity
(Expression
(Arg1
))) /= E_Variable
9354 and then Ekind
(Entity
(Expression
(Arg1
))) /= E_Constant
)
9356 Error_Pragma_Arg
("pragma% only applies to objects", Arg1
);
9359 Ent
:= Entity
(Expression
(Arg1
));
9360 Decl
:= Parent
(Ent
);
9362 if Rep_Item_Too_Late
(Ent
, N
) then
9366 if Present
(Expression
(Decl
)) then
9368 ("object for pragma% cannot have initialization", Arg1
);
9371 if not Is_Potentially_Persistent_Type
(Etype
(Ent
)) then
9373 ("object type for pragma% is not potentially persistent",
9378 Make_Linker_Section_Pragma
9379 (Ent
, Sloc
(N
), ".persistent.bss");
9380 Insert_After
(N
, Prag
);
9383 -- Case of use as configuration pragma with no arguments
9386 Check_Valid_Configuration_Pragma
;
9387 Persistent_BSS_Mode
:= True;
9395 -- pragma Postcondition ([Check =>] Boolean_Expression
9396 -- [,[Message =>] String_Expression]);
9398 when Pragma_Postcondition
=> Postcondition
: declare
9400 pragma Warnings
(Off
, In_Body
);
9404 Check_At_Least_N_Arguments
(1);
9405 Check_At_Most_N_Arguments
(2);
9406 Check_Optional_Identifier
(Arg1
, Name_Check
);
9408 -- All we need to do here is call the common check procedure,
9409 -- the remainder of the processing is found in Sem_Ch6/Sem_Ch7.
9411 Check_Precondition_Postcondition
(In_Body
);
9418 -- pragma Precondition ([Check =>] Boolean_Expression
9419 -- [,[Message =>] String_Expression]);
9421 when Pragma_Precondition
=> Precondition
: declare
9426 Check_At_Least_N_Arguments
(1);
9427 Check_At_Most_N_Arguments
(2);
9428 Check_Optional_Identifier
(Arg1
, Name_Check
);
9430 Check_Precondition_Postcondition
(In_Body
);
9432 -- If in spec, nothing to do. If in body, then we convert the
9433 -- pragma to pragma Check (Precondition, cond [, msg]). Note we
9434 -- do this whether or not precondition checks are enabled. That
9435 -- works fine since pragma Check will do this check.
9438 if Arg_Count
= 2 then
9439 Check_Optional_Identifier
(Arg3
, Name_Message
);
9440 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg2
), Standard_String
);
9443 Analyze_And_Resolve
(Get_Pragma_Arg
(Arg1
), Standard_Boolean
);
9447 Chars
=> Name_Check
,
9448 Pragma_Argument_Associations
=> New_List
(
9449 Make_Pragma_Argument_Association
(Loc
,
9451 Make_Identifier
(Loc
,
9452 Chars
=> Name_Precondition
)),
9454 Make_Pragma_Argument_Association
(Sloc
(Arg1
),
9455 Expression
=> Relocate_Node
(Get_Pragma_Arg
(Arg1
))))));
9457 if Arg_Count
= 2 then
9458 Append_To
(Pragma_Argument_Associations
(N
),
9459 Make_Pragma_Argument_Association
(Sloc
(Arg2
),
9460 Expression
=> Relocate_Node
(Get_Pragma_Arg
(Arg2
))));
9471 -- pragma Preelaborate [(library_unit_NAME)];
9473 -- Set the flag Is_Preelaborated of program unit name entity
9475 when Pragma_Preelaborate
=> Preelaborate
: declare
9476 Pa
: constant Node_Id
:= Parent
(N
);
9477 Pk
: constant Node_Kind
:= Nkind
(Pa
);
9481 Check_Ada_83_Warning
;
9482 Check_Valid_Library_Unit_Pragma
;
9484 if Nkind
(N
) = N_Null_Statement
then
9488 Ent
:= Find_Lib_Unit_Name
;
9490 -- This filters out pragmas inside generic parent then
9491 -- show up inside instantiation
9494 and then not (Pk
= N_Package_Specification
9495 and then Present
(Generic_Parent
(Pa
)))
9497 if not Debug_Flag_U
then
9498 Set_Is_Preelaborated
(Ent
);
9499 Set_Suppress_Elaboration_Warnings
(Ent
);
9504 ---------------------
9505 -- Preelaborate_05 --
9506 ---------------------
9508 -- pragma Preelaborate_05 [(library_unit_NAME)];
9510 -- This pragma is useable only in GNAT_Mode, where it is used like
9511 -- pragma Preelaborate but it is only effective in Ada 2005 mode
9512 -- (otherwise it is ignored). This is used to implement AI-362 which
9513 -- recategorizes some run-time packages in Ada 2005 mode.
9515 when Pragma_Preelaborate_05
=> Preelaborate_05
: declare
9520 Check_Valid_Library_Unit_Pragma
;
9522 if not GNAT_Mode
then
9523 Error_Pragma
("pragma% only available in GNAT mode");
9526 if Nkind
(N
) = N_Null_Statement
then
9530 -- This is one of the few cases where we need to test the value of
9531 -- Ada_Version_Explicit rather than Ada_Version (which is always
9532 -- set to Ada_05 in a predefined unit), we need to know the
9533 -- explicit version set to know if this pragma is active.
9535 if Ada_Version_Explicit
>= Ada_05
then
9536 Ent
:= Find_Lib_Unit_Name
;
9537 Set_Is_Preelaborated
(Ent
);
9538 Set_Suppress_Elaboration_Warnings
(Ent
);
9540 end Preelaborate_05
;
9546 -- pragma Priority (EXPRESSION);
9548 when Pragma_Priority
=> Priority
: declare
9549 P
: constant Node_Id
:= Parent
(N
);
9553 Check_No_Identifiers
;
9554 Check_Arg_Count
(1);
9558 if Nkind
(P
) = N_Subprogram_Body
then
9559 Check_In_Main_Program
;
9561 Arg
:= Expression
(Arg1
);
9562 Analyze_And_Resolve
(Arg
, Standard_Integer
);
9566 if not Is_Static_Expression
(Arg
) then
9567 Flag_Non_Static_Expr
9568 ("main subprogram priority is not static!", Arg
);
9571 -- If constraint error, then we already signalled an error
9573 elsif Raises_Constraint_Error
(Arg
) then
9576 -- Otherwise check in range
9580 Val
: constant Uint
:= Expr_Value
(Arg
);
9584 or else Val
> Expr_Value
(Expression
9585 (Parent
(RTE
(RE_Max_Priority
))))
9588 ("main subprogram priority is out of range", Arg1
);
9594 (Current_Sem_Unit
, UI_To_Int
(Expr_Value
(Arg
)));
9596 -- Load an arbitrary entity from System.Tasking to make sure
9597 -- this package is implicitly with'ed, since we need to have
9598 -- the tasking run-time active for the pragma Priority to have
9602 Discard
: Entity_Id
;
9603 pragma Warnings
(Off
, Discard
);
9605 Discard
:= RTE
(RE_Task_List
);
9608 -- Task or Protected, must be of type Integer
9610 elsif Nkind
(P
) = N_Protected_Definition
9612 Nkind
(P
) = N_Task_Definition
9614 Arg
:= Expression
(Arg1
);
9616 -- The expression must be analyzed in the special manner
9617 -- described in "Handling of Default and Per-Object
9618 -- Expressions" in sem.ads.
9620 Preanalyze_Spec_Expression
(Arg
, Standard_Integer
);
9622 if not Is_Static_Expression
(Arg
) then
9623 Check_Restriction
(Static_Priorities
, Arg
);
9626 -- Anything else is incorrect
9632 if Has_Priority_Pragma
(P
) then
9633 Error_Pragma
("duplicate pragma% not allowed");
9635 Set_Has_Priority_Pragma
(P
, True);
9637 if Nkind
(P
) = N_Protected_Definition
9639 Nkind
(P
) = N_Task_Definition
9641 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
9642 -- exp_ch9 should use this ???
9647 -----------------------------------
9648 -- Priority_Specific_Dispatching --
9649 -----------------------------------
9651 -- pragma Priority_Specific_Dispatching (
9652 -- policy_IDENTIFIER,
9653 -- first_priority_EXPRESSION,
9654 -- last_priority_EXPRESSION);
9656 when Pragma_Priority_Specific_Dispatching
=>
9657 Priority_Specific_Dispatching
: declare
9658 Prio_Id
: constant Entity_Id
:= RTE
(RE_Any_Priority
);
9659 -- This is the entity System.Any_Priority;
9662 Lower_Bound
: Node_Id
;
9663 Upper_Bound
: Node_Id
;
9669 Check_Arg_Count
(3);
9670 Check_No_Identifiers
;
9671 Check_Arg_Is_Task_Dispatching_Policy
(Arg1
);
9672 Check_Valid_Configuration_Pragma
;
9673 Get_Name_String
(Chars
(Expression
(Arg1
)));
9674 DP
:= Fold_Upper
(Name_Buffer
(1));
9676 Lower_Bound
:= Expression
(Arg2
);
9677 Check_Arg_Is_Static_Expression
(Lower_Bound
, Standard_Integer
);
9678 Lower_Val
:= Expr_Value
(Lower_Bound
);
9680 Upper_Bound
:= Expression
(Arg3
);
9681 Check_Arg_Is_Static_Expression
(Upper_Bound
, Standard_Integer
);
9682 Upper_Val
:= Expr_Value
(Upper_Bound
);
9684 -- It is not allowed to use Task_Dispatching_Policy and
9685 -- Priority_Specific_Dispatching in the same partition.
9687 if Task_Dispatching_Policy
/= ' ' then
9688 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
9690 ("pragma% incompatible with Task_Dispatching_Policy#");
9692 -- Check lower bound in range
9694 elsif Lower_Val
< Expr_Value
(Type_Low_Bound
(Prio_Id
))
9696 Lower_Val
> Expr_Value
(Type_High_Bound
(Prio_Id
))
9699 ("first_priority is out of range", Arg2
);
9701 -- Check upper bound in range
9703 elsif Upper_Val
< Expr_Value
(Type_Low_Bound
(Prio_Id
))
9705 Upper_Val
> Expr_Value
(Type_High_Bound
(Prio_Id
))
9708 ("last_priority is out of range", Arg3
);
9710 -- Check that the priority range is valid
9712 elsif Lower_Val
> Upper_Val
then
9714 ("last_priority_expression must be greater than" &
9715 " or equal to first_priority_expression");
9717 -- Store the new policy, but always preserve System_Location since
9718 -- we like the error message with the run-time name.
9721 -- Check overlapping in the priority ranges specified in other
9722 -- Priority_Specific_Dispatching pragmas within the same
9723 -- partition. We can only check those we know about!
9726 Specific_Dispatching
.First
.. Specific_Dispatching
.Last
9728 if Specific_Dispatching
.Table
(J
).First_Priority
in
9729 UI_To_Int
(Lower_Val
) .. UI_To_Int
(Upper_Val
)
9730 or else Specific_Dispatching
.Table
(J
).Last_Priority
in
9731 UI_To_Int
(Lower_Val
) .. UI_To_Int
(Upper_Val
)
9734 Specific_Dispatching
.Table
(J
).Pragma_Loc
;
9736 ("priority range overlaps with "
9737 & "Priority_Specific_Dispatching#");
9741 -- The use of Priority_Specific_Dispatching is incompatible
9742 -- with Task_Dispatching_Policy.
9744 if Task_Dispatching_Policy
/= ' ' then
9745 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
9747 ("Priority_Specific_Dispatching incompatible "
9748 & "with Task_Dispatching_Policy#");
9751 -- The use of Priority_Specific_Dispatching forces ceiling
9754 if Locking_Policy
/= ' ' and then Locking_Policy
/= 'C' then
9755 Error_Msg_Sloc
:= Locking_Policy_Sloc
;
9757 ("Priority_Specific_Dispatching incompatible "
9758 & "with Locking_Policy#");
9760 -- Set the Ceiling_Locking policy, but preserve System_Location
9761 -- since we like the error message with the run time name.
9764 Locking_Policy
:= 'C';
9766 if Locking_Policy_Sloc
/= System_Location
then
9767 Locking_Policy_Sloc
:= Loc
;
9771 -- Add entry in the table
9773 Specific_Dispatching
.Append
9774 ((Dispatching_Policy
=> DP
,
9775 First_Priority
=> UI_To_Int
(Lower_Val
),
9776 Last_Priority
=> UI_To_Int
(Upper_Val
),
9777 Pragma_Loc
=> Loc
));
9779 end Priority_Specific_Dispatching
;
9785 -- pragma Profile (profile_IDENTIFIER);
9787 -- profile_IDENTIFIER => Restricted | Ravenscar
9789 when Pragma_Profile
=>
9791 Check_Arg_Count
(1);
9792 Check_Valid_Configuration_Pragma
;
9793 Check_No_Identifiers
;
9796 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
9798 if Chars
(Argx
) = Name_Ravenscar
then
9799 Set_Ravenscar_Profile
(N
);
9800 elsif Chars
(Argx
) = Name_Restricted
then
9801 Set_Profile_Restrictions
9802 (Restricted
, N
, Warn
=> Treat_Restrictions_As_Warnings
);
9804 Error_Pragma_Arg
("& is not a valid profile", Argx
);
9808 ----------------------
9809 -- Profile_Warnings --
9810 ----------------------
9812 -- pragma Profile_Warnings (profile_IDENTIFIER);
9814 -- profile_IDENTIFIER => Restricted | Ravenscar
9816 when Pragma_Profile_Warnings
=>
9818 Check_Arg_Count
(1);
9819 Check_Valid_Configuration_Pragma
;
9820 Check_No_Identifiers
;
9823 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
9825 if Chars
(Argx
) = Name_Ravenscar
then
9826 Set_Profile_Restrictions
(Ravenscar
, N
, Warn
=> True);
9827 elsif Chars
(Argx
) = Name_Restricted
then
9828 Set_Profile_Restrictions
(Restricted
, N
, Warn
=> True);
9830 Error_Pragma_Arg
("& is not a valid profile", Argx
);
9834 --------------------------
9835 -- Propagate_Exceptions --
9836 --------------------------
9838 -- pragma Propagate_Exceptions;
9840 -- Note: this pragma is obsolete and has no effect
9842 when Pragma_Propagate_Exceptions
=>
9844 Check_Arg_Count
(0);
9846 if In_Extended_Main_Source_Unit
(N
) then
9847 Propagate_Exceptions
:= True;
9854 -- pragma Psect_Object (
9855 -- [Internal =>] LOCAL_NAME,
9856 -- [, [External =>] EXTERNAL_SYMBOL]
9857 -- [, [Size =>] EXTERNAL_SYMBOL]);
9859 when Pragma_Psect_Object | Pragma_Common_Object
=>
9860 Psect_Object
: declare
9861 Args
: Args_List
(1 .. 3);
9862 Names
: constant Name_List
(1 .. 3) := (
9867 Internal
: Node_Id
renames Args
(1);
9868 External
: Node_Id
renames Args
(2);
9869 Size
: Node_Id
renames Args
(3);
9873 procedure Check_Too_Long
(Arg
: Node_Id
);
9874 -- Posts message if the argument is an identifier with more
9875 -- than 31 characters, or a string literal with more than
9876 -- 31 characters, and we are operating under VMS
9878 --------------------
9879 -- Check_Too_Long --
9880 --------------------
9882 procedure Check_Too_Long
(Arg
: Node_Id
) is
9883 X
: constant Node_Id
:= Original_Node
(Arg
);
9886 if Nkind
(X
) /= N_String_Literal
9888 Nkind
(X
) /= N_Identifier
9891 ("inappropriate argument for pragma %", Arg
);
9894 if OpenVMS_On_Target
then
9895 if (Nkind
(X
) = N_String_Literal
9896 and then String_Length
(Strval
(X
)) > 31)
9898 (Nkind
(X
) = N_Identifier
9899 and then Length_Of_Name
(Chars
(X
)) > 31)
9902 ("argument for pragma % is longer than 31 characters",
9908 -- Start of processing for Common_Object/Psect_Object
9912 Gather_Associations
(Names
, Args
);
9913 Process_Extended_Import_Export_Internal_Arg
(Internal
);
9915 Def_Id
:= Entity
(Internal
);
9917 if Ekind
(Def_Id
) /= E_Constant
9918 and then Ekind
(Def_Id
) /= E_Variable
9921 ("pragma% must designate an object", Internal
);
9924 Check_Too_Long
(Internal
);
9926 if Is_Imported
(Def_Id
) or else Is_Exported
(Def_Id
) then
9928 ("cannot use pragma% for imported/exported object",
9932 if Is_Concurrent_Type
(Etype
(Internal
)) then
9934 ("cannot specify pragma % for task/protected object",
9938 if Has_Rep_Pragma
(Def_Id
, Name_Common_Object
)
9940 Has_Rep_Pragma
(Def_Id
, Name_Psect_Object
)
9942 Error_Msg_N
("?duplicate Common/Psect_Object pragma", N
);
9945 if Ekind
(Def_Id
) = E_Constant
then
9947 ("cannot specify pragma % for a constant", Internal
);
9950 if Is_Record_Type
(Etype
(Internal
)) then
9956 Ent
:= First_Entity
(Etype
(Internal
));
9957 while Present
(Ent
) loop
9958 Decl
:= Declaration_Node
(Ent
);
9960 if Ekind
(Ent
) = E_Component
9961 and then Nkind
(Decl
) = N_Component_Declaration
9962 and then Present
(Expression
(Decl
))
9963 and then Warn_On_Export_Import
9966 ("?object for pragma % has defaults", Internal
);
9976 if Present
(Size
) then
9977 Check_Too_Long
(Size
);
9980 if Present
(External
) then
9981 Check_Arg_Is_External_Name
(External
);
9982 Check_Too_Long
(External
);
9985 -- If all error tests pass, link pragma on to the rep item chain
9987 Record_Rep_Item
(Def_Id
, N
);
9994 -- pragma Pure [(library_unit_NAME)];
9996 when Pragma_Pure
=> Pure
: declare
10000 Check_Ada_83_Warning
;
10001 Check_Valid_Library_Unit_Pragma
;
10003 if Nkind
(N
) = N_Null_Statement
then
10007 Ent
:= Find_Lib_Unit_Name
;
10009 Set_Has_Pragma_Pure
(Ent
);
10010 Set_Suppress_Elaboration_Warnings
(Ent
);
10017 -- pragma Pure_05 [(library_unit_NAME)];
10019 -- This pragma is useable only in GNAT_Mode, where it is used like
10020 -- pragma Pure but it is only effective in Ada 2005 mode (otherwise
10021 -- it is ignored). It may be used after a pragma Preelaborate, in
10022 -- which case it overrides the effect of the pragma Preelaborate.
10023 -- This is used to implement AI-362 which recategorizes some run-time
10024 -- packages in Ada 2005 mode.
10026 when Pragma_Pure_05
=> Pure_05
: declare
10031 Check_Valid_Library_Unit_Pragma
;
10033 if not GNAT_Mode
then
10034 Error_Pragma
("pragma% only available in GNAT mode");
10036 if Nkind
(N
) = N_Null_Statement
then
10040 -- This is one of the few cases where we need to test the value of
10041 -- Ada_Version_Explicit rather than Ada_Version (which is always
10042 -- set to Ada_05 in a predefined unit), we need to know the
10043 -- explicit version set to know if this pragma is active.
10045 if Ada_Version_Explicit
>= Ada_05
then
10046 Ent
:= Find_Lib_Unit_Name
;
10047 Set_Is_Preelaborated
(Ent
, False);
10049 Set_Suppress_Elaboration_Warnings
(Ent
);
10053 -------------------
10054 -- Pure_Function --
10055 -------------------
10057 -- pragma Pure_Function ([Entity =>] function_LOCAL_NAME);
10059 when Pragma_Pure_Function
=> Pure_Function
: declare
10062 Def_Id
: Entity_Id
;
10063 Effective
: Boolean := False;
10067 Check_Arg_Count
(1);
10068 Check_Optional_Identifier
(Arg1
, Name_Entity
);
10069 Check_Arg_Is_Local_Name
(Arg1
);
10070 E_Id
:= Expression
(Arg1
);
10072 if Error_Posted
(E_Id
) then
10076 -- Loop through homonyms (overloadings) of referenced entity
10078 E
:= Entity
(E_Id
);
10080 if Present
(E
) then
10082 Def_Id
:= Get_Base_Subprogram
(E
);
10084 if Ekind
(Def_Id
) /= E_Function
10085 and then Ekind
(Def_Id
) /= E_Generic_Function
10086 and then Ekind
(Def_Id
) /= E_Operator
10089 ("pragma% requires a function name", Arg1
);
10092 Set_Is_Pure
(Def_Id
);
10094 if not Has_Pragma_Pure_Function
(Def_Id
) then
10095 Set_Has_Pragma_Pure_Function
(Def_Id
);
10100 exit when No
(E
) or else Scope
(E
) /= Current_Scope
;
10104 and then Warn_On_Redundant_Constructs
10106 Error_Msg_NE
("pragma Pure_Function on& is redundant?",
10112 --------------------
10113 -- Queuing_Policy --
10114 --------------------
10116 -- pragma Queuing_Policy (policy_IDENTIFIER);
10118 when Pragma_Queuing_Policy
=> declare
10122 Check_Ada_83_Warning
;
10123 Check_Arg_Count
(1);
10124 Check_No_Identifiers
;
10125 Check_Arg_Is_Queuing_Policy
(Arg1
);
10126 Check_Valid_Configuration_Pragma
;
10127 Get_Name_String
(Chars
(Expression
(Arg1
)));
10128 QP
:= Fold_Upper
(Name_Buffer
(1));
10130 if Queuing_Policy
/= ' '
10131 and then Queuing_Policy
/= QP
10133 Error_Msg_Sloc
:= Queuing_Policy_Sloc
;
10134 Error_Pragma
("queuing policy incompatible with policy#");
10136 -- Set new policy, but always preserve System_Location since
10137 -- we like the error message with the run time name.
10140 Queuing_Policy
:= QP
;
10142 if Queuing_Policy_Sloc
/= System_Location
then
10143 Queuing_Policy_Sloc
:= Loc
;
10148 -----------------------
10149 -- Relative_Deadline --
10150 -----------------------
10152 -- pragma Relative_Deadline (time_span_EXPRESSION);
10154 when Pragma_Relative_Deadline
=> Relative_Deadline
: declare
10155 P
: constant Node_Id
:= Parent
(N
);
10160 Check_No_Identifiers
;
10161 Check_Arg_Count
(1);
10163 Arg
:= Expression
(Arg1
);
10165 -- The expression must be analyzed in the special manner described
10166 -- in "Handling of Default and Per-Object Expressions" in sem.ads.
10168 Preanalyze_Spec_Expression
(Arg
, RTE
(RE_Time_Span
));
10172 if Nkind
(P
) = N_Subprogram_Body
then
10173 Check_In_Main_Program
;
10177 elsif Nkind
(P
) = N_Task_Definition
then
10180 -- Anything else is incorrect
10186 if Has_Relative_Deadline_Pragma
(P
) then
10187 Error_Pragma
("duplicate pragma% not allowed");
10189 Set_Has_Relative_Deadline_Pragma
(P
, True);
10191 if Nkind
(P
) = N_Task_Definition
then
10192 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
10195 end Relative_Deadline
;
10197 ---------------------------
10198 -- Remote_Call_Interface --
10199 ---------------------------
10201 -- pragma Remote_Call_Interface [(library_unit_NAME)];
10203 when Pragma_Remote_Call_Interface
=> Remote_Call_Interface
: declare
10204 Cunit_Node
: Node_Id
;
10205 Cunit_Ent
: Entity_Id
;
10209 Check_Ada_83_Warning
;
10210 Check_Valid_Library_Unit_Pragma
;
10212 if Nkind
(N
) = N_Null_Statement
then
10216 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
10217 K
:= Nkind
(Unit
(Cunit_Node
));
10218 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
10220 if K
= N_Package_Declaration
10221 or else K
= N_Generic_Package_Declaration
10222 or else K
= N_Subprogram_Declaration
10223 or else K
= N_Generic_Subprogram_Declaration
10224 or else (K
= N_Subprogram_Body
10225 and then Acts_As_Spec
(Unit
(Cunit_Node
)))
10230 "pragma% must apply to package or subprogram declaration");
10233 Set_Is_Remote_Call_Interface
(Cunit_Ent
);
10234 end Remote_Call_Interface
;
10240 -- pragma Remote_Types [(library_unit_NAME)];
10242 when Pragma_Remote_Types
=> Remote_Types
: declare
10243 Cunit_Node
: Node_Id
;
10244 Cunit_Ent
: Entity_Id
;
10247 Check_Ada_83_Warning
;
10248 Check_Valid_Library_Unit_Pragma
;
10250 if Nkind
(N
) = N_Null_Statement
then
10254 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
10255 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
10257 if Nkind
(Unit
(Cunit_Node
)) /= N_Package_Declaration
10259 Nkind
(Unit
(Cunit_Node
)) /= N_Generic_Package_Declaration
10262 "pragma% can only apply to a package declaration");
10265 Set_Is_Remote_Types
(Cunit_Ent
);
10272 -- pragma Ravenscar;
10274 when Pragma_Ravenscar
=>
10276 Check_Arg_Count
(0);
10277 Check_Valid_Configuration_Pragma
;
10278 Set_Ravenscar_Profile
(N
);
10280 if Warn_On_Obsolescent_Feature
then
10282 ("pragma Ravenscar is an obsolescent feature?", N
);
10284 ("|use pragma Profile (Ravenscar) instead", N
);
10287 -------------------------
10288 -- Restricted_Run_Time --
10289 -------------------------
10291 -- pragma Restricted_Run_Time;
10293 when Pragma_Restricted_Run_Time
=>
10295 Check_Arg_Count
(0);
10296 Check_Valid_Configuration_Pragma
;
10297 Set_Profile_Restrictions
10298 (Restricted
, N
, Warn
=> Treat_Restrictions_As_Warnings
);
10300 if Warn_On_Obsolescent_Feature
then
10302 ("pragma Restricted_Run_Time is an obsolescent feature?", N
);
10304 ("|use pragma Profile (Restricted) instead", N
);
10311 -- pragma Restrictions (RESTRICTION {, RESTRICTION});
10314 -- restriction_IDENTIFIER
10315 -- | restriction_parameter_IDENTIFIER => EXPRESSION
10317 when Pragma_Restrictions
=>
10318 Process_Restrictions_Or_Restriction_Warnings
10319 (Warn
=> Treat_Restrictions_As_Warnings
);
10321 --------------------------
10322 -- Restriction_Warnings --
10323 --------------------------
10325 -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
10328 -- restriction_IDENTIFIER
10329 -- | restriction_parameter_IDENTIFIER => EXPRESSION
10331 when Pragma_Restriction_Warnings
=>
10333 Process_Restrictions_Or_Restriction_Warnings
(Warn
=> True);
10339 -- pragma Reviewable;
10341 when Pragma_Reviewable
=>
10342 Check_Ada_83_Warning
;
10343 Check_Arg_Count
(0);
10346 -------------------
10347 -- Share_Generic --
10348 -------------------
10350 -- pragma Share_Generic (NAME {, NAME});
10352 when Pragma_Share_Generic
=>
10354 Process_Generic_List
;
10360 -- pragma Shared (LOCAL_NAME);
10362 when Pragma_Shared
=>
10364 Process_Atomic_Shared_Volatile
;
10366 --------------------
10367 -- Shared_Passive --
10368 --------------------
10370 -- pragma Shared_Passive [(library_unit_NAME)];
10372 -- Set the flag Is_Shared_Passive of program unit name entity
10374 when Pragma_Shared_Passive
=> Shared_Passive
: declare
10375 Cunit_Node
: Node_Id
;
10376 Cunit_Ent
: Entity_Id
;
10379 Check_Ada_83_Warning
;
10380 Check_Valid_Library_Unit_Pragma
;
10382 if Nkind
(N
) = N_Null_Statement
then
10386 Cunit_Node
:= Cunit
(Current_Sem_Unit
);
10387 Cunit_Ent
:= Cunit_Entity
(Current_Sem_Unit
);
10389 if Nkind
(Unit
(Cunit_Node
)) /= N_Package_Declaration
10391 Nkind
(Unit
(Cunit_Node
)) /= N_Generic_Package_Declaration
10394 "pragma% can only apply to a package declaration");
10397 Set_Is_Shared_Passive
(Cunit_Ent
);
10398 end Shared_Passive
;
10400 ----------------------
10401 -- Source_File_Name --
10402 ----------------------
10404 -- There are five forms for this pragma:
10406 -- pragma Source_File_Name (
10407 -- [UNIT_NAME =>] unit_NAME,
10408 -- BODY_FILE_NAME => STRING_LITERAL
10409 -- [, [INDEX =>] INTEGER_LITERAL]);
10411 -- pragma Source_File_Name (
10412 -- [UNIT_NAME =>] unit_NAME,
10413 -- SPEC_FILE_NAME => STRING_LITERAL
10414 -- [, [INDEX =>] INTEGER_LITERAL]);
10416 -- pragma Source_File_Name (
10417 -- BODY_FILE_NAME => STRING_LITERAL
10418 -- [, DOT_REPLACEMENT => STRING_LITERAL]
10419 -- [, CASING => CASING_SPEC]);
10421 -- pragma Source_File_Name (
10422 -- SPEC_FILE_NAME => STRING_LITERAL
10423 -- [, DOT_REPLACEMENT => STRING_LITERAL]
10424 -- [, CASING => CASING_SPEC]);
10426 -- pragma Source_File_Name (
10427 -- SUBUNIT_FILE_NAME => STRING_LITERAL
10428 -- [, DOT_REPLACEMENT => STRING_LITERAL]
10429 -- [, CASING => CASING_SPEC]);
10431 -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
10433 -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
10434 -- Source_File_Name (SFN), however their usage is exclusive:
10435 -- SFN can only be used when no project file is used, while
10436 -- SFNP can only be used when a project file is used.
10438 -- No processing here. Processing was completed during parsing,
10439 -- since we need to have file names set as early as possible.
10440 -- Units are loaded well before semantic processing starts.
10442 -- The only processing we defer to this point is the check
10443 -- for correct placement.
10445 when Pragma_Source_File_Name
=>
10447 Check_Valid_Configuration_Pragma
;
10449 ------------------------------
10450 -- Source_File_Name_Project --
10451 ------------------------------
10453 -- See Source_File_Name for syntax
10455 -- No processing here. Processing was completed during parsing,
10456 -- since we need to have file names set as early as possible.
10457 -- Units are loaded well before semantic processing starts.
10459 -- The only processing we defer to this point is the check
10460 -- for correct placement.
10462 when Pragma_Source_File_Name_Project
=>
10464 Check_Valid_Configuration_Pragma
;
10466 -- Check that a pragma Source_File_Name_Project is used only
10467 -- in a configuration pragmas file.
10469 -- Pragmas Source_File_Name_Project should only be generated
10470 -- by the Project Manager in configuration pragmas files.
10472 -- This is really an ugly test. It seems to depend on some
10473 -- accidental and undocumented property. At the very least
10474 -- it needs to be documented, but it would be better to have
10475 -- a clean way of testing if we are in a configuration file???
10477 if Present
(Parent
(N
)) then
10479 ("pragma% can only appear in a configuration pragmas file");
10482 ----------------------
10483 -- Source_Reference --
10484 ----------------------
10486 -- pragma Source_Reference (INTEGER_LITERAL [, STRING_LITERAL]);
10488 -- Nothing to do, all processing completed in Par.Prag, since we
10489 -- need the information for possible parser messages that are output
10491 when Pragma_Source_Reference
=>
10494 --------------------------------
10495 -- Static_Elaboration_Desired --
10496 --------------------------------
10498 -- pragma Static_Elaboration_Desired (DIRECT_NAME);
10500 when Pragma_Static_Elaboration_Desired
=>
10502 Check_At_Most_N_Arguments
(1);
10504 if Is_Compilation_Unit
(Current_Scope
)
10505 and then Ekind
(Current_Scope
) = E_Package
10507 Set_Static_Elaboration_Desired
(Current_Scope
, True);
10509 Error_Pragma
("pragma% must apply to a library-level package");
10516 -- pragma Storage_Size (EXPRESSION);
10518 when Pragma_Storage_Size
=> Storage_Size
: declare
10519 P
: constant Node_Id
:= Parent
(N
);
10523 Check_No_Identifiers
;
10524 Check_Arg_Count
(1);
10526 -- The expression must be analyzed in the special manner described
10527 -- in "Handling of Default Expressions" in sem.ads.
10529 Arg
:= Expression
(Arg1
);
10530 Preanalyze_Spec_Expression
(Arg
, Any_Integer
);
10532 if not Is_Static_Expression
(Arg
) then
10533 Check_Restriction
(Static_Storage_Size
, Arg
);
10536 if Nkind
(P
) /= N_Task_Definition
then
10541 if Has_Storage_Size_Pragma
(P
) then
10542 Error_Pragma
("duplicate pragma% not allowed");
10544 Set_Has_Storage_Size_Pragma
(P
, True);
10547 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
10548 -- ??? exp_ch9 should use this!
10556 -- pragma Storage_Unit (NUMERIC_LITERAL);
10558 -- Only permitted argument is System'Storage_Unit value
10560 when Pragma_Storage_Unit
=>
10561 Check_No_Identifiers
;
10562 Check_Arg_Count
(1);
10563 Check_Arg_Is_Integer_Literal
(Arg1
);
10565 if Intval
(Expression
(Arg1
)) /=
10566 UI_From_Int
(Ttypes
.System_Storage_Unit
)
10568 Error_Msg_Uint_1
:= UI_From_Int
(Ttypes
.System_Storage_Unit
);
10570 ("the only allowed argument for pragma% is ^", Arg1
);
10573 --------------------
10574 -- Stream_Convert --
10575 --------------------
10577 -- pragma Stream_Convert (
10578 -- [Entity =>] type_LOCAL_NAME,
10579 -- [Read =>] function_NAME,
10580 -- [Write =>] function NAME);
10582 when Pragma_Stream_Convert
=> Stream_Convert
: declare
10584 procedure Check_OK_Stream_Convert_Function
(Arg
: Node_Id
);
10585 -- Check that the given argument is the name of a local
10586 -- function of one argument that is not overloaded earlier
10587 -- in the current local scope. A check is also made that the
10588 -- argument is a function with one parameter.
10590 --------------------------------------
10591 -- Check_OK_Stream_Convert_Function --
10592 --------------------------------------
10594 procedure Check_OK_Stream_Convert_Function
(Arg
: Node_Id
) is
10598 Check_Arg_Is_Local_Name
(Arg
);
10599 Ent
:= Entity
(Expression
(Arg
));
10601 if Has_Homonym
(Ent
) then
10603 ("argument for pragma% may not be overloaded", Arg
);
10606 if Ekind
(Ent
) /= E_Function
10607 or else No
(First_Formal
(Ent
))
10608 or else Present
(Next_Formal
(First_Formal
(Ent
)))
10611 ("argument for pragma% must be" &
10612 " function of one argument", Arg
);
10614 end Check_OK_Stream_Convert_Function
;
10616 -- Start of processing for Stream_Convert
10620 Check_Arg_Order
((Name_Entity
, Name_Read
, Name_Write
));
10621 Check_Arg_Count
(3);
10622 Check_Optional_Identifier
(Arg1
, Name_Entity
);
10623 Check_Optional_Identifier
(Arg2
, Name_Read
);
10624 Check_Optional_Identifier
(Arg3
, Name_Write
);
10625 Check_Arg_Is_Local_Name
(Arg1
);
10626 Check_OK_Stream_Convert_Function
(Arg2
);
10627 Check_OK_Stream_Convert_Function
(Arg3
);
10630 Typ
: constant Entity_Id
:=
10631 Underlying_Type
(Entity
(Expression
(Arg1
)));
10632 Read
: constant Entity_Id
:= Entity
(Expression
(Arg2
));
10633 Write
: constant Entity_Id
:= Entity
(Expression
(Arg3
));
10636 Check_First_Subtype
(Arg1
);
10638 -- Check for too early or too late. Note that we don't enforce
10639 -- the rule about primitive operations in this case, since, as
10640 -- is the case for explicit stream attributes themselves, these
10641 -- restrictions are not appropriate. Note that the chaining of
10642 -- the pragma by Rep_Item_Too_Late is actually the critical
10643 -- processing done for this pragma.
10645 if Rep_Item_Too_Early
(Typ
, N
)
10647 Rep_Item_Too_Late
(Typ
, N
, FOnly
=> True)
10652 -- Return if previous error
10654 if Etype
(Typ
) = Any_Type
10656 Etype
(Read
) = Any_Type
10658 Etype
(Write
) = Any_Type
10665 if Underlying_Type
(Etype
(Read
)) /= Typ
then
10667 ("incorrect return type for function&", Arg2
);
10670 if Underlying_Type
(Etype
(First_Formal
(Write
))) /= Typ
then
10672 ("incorrect parameter type for function&", Arg3
);
10675 if Underlying_Type
(Etype
(First_Formal
(Read
))) /=
10676 Underlying_Type
(Etype
(Write
))
10679 ("result type of & does not match Read parameter type",
10683 end Stream_Convert
;
10685 -------------------------
10686 -- Style_Checks (GNAT) --
10687 -------------------------
10689 -- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
10691 -- This is processed by the parser since some of the style
10692 -- checks take place during source scanning and parsing. This
10693 -- means that we don't need to issue error messages here.
10695 when Pragma_Style_Checks
=> Style_Checks
: declare
10696 A
: constant Node_Id
:= Expression
(Arg1
);
10702 Check_No_Identifiers
;
10704 -- Two argument form
10706 if Arg_Count
= 2 then
10707 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
10714 E_Id
:= Expression
(Arg2
);
10717 if not Is_Entity_Name
(E_Id
) then
10719 ("second argument of pragma% must be entity name",
10723 E
:= Entity
(E_Id
);
10729 Set_Suppress_Style_Checks
(E
,
10730 (Chars
(Expression
(Arg1
)) = Name_Off
));
10731 exit when No
(Homonym
(E
));
10737 -- One argument form
10740 Check_Arg_Count
(1);
10742 if Nkind
(A
) = N_String_Literal
then
10746 Slen
: constant Natural := Natural (String_Length
(S
));
10747 Options
: String (1 .. Slen
);
10753 C
:= Get_String_Char
(S
, Int
(J
));
10754 exit when not In_Character_Range
(C
);
10755 Options
(J
) := Get_Character
(C
);
10757 -- If at end of string, set options. As per discussion
10758 -- above, no need to check for errors, since we issued
10759 -- them in the parser.
10762 Set_Style_Check_Options
(Options
);
10770 elsif Nkind
(A
) = N_Identifier
then
10771 if Chars
(A
) = Name_All_Checks
then
10772 Set_Default_Style_Check_Options
;
10774 elsif Chars
(A
) = Name_On
then
10775 Style_Check
:= True;
10777 elsif Chars
(A
) = Name_Off
then
10778 Style_Check
:= False;
10788 -- pragma Subtitle ([Subtitle =>] STRING_LITERAL);
10790 when Pragma_Subtitle
=>
10792 Check_Arg_Count
(1);
10793 Check_Optional_Identifier
(Arg1
, Name_Subtitle
);
10794 Check_Arg_Is_String_Literal
(Arg1
);
10800 -- pragma Suppress (IDENTIFIER [, [On =>] NAME]);
10802 when Pragma_Suppress
=>
10803 Process_Suppress_Unsuppress
(True);
10809 -- pragma Suppress_All;
10811 -- The only check made here is that the pragma appears in the
10812 -- proper place, i.e. following a compilation unit. If indeed
10813 -- it appears in this context, then the parser has already
10814 -- inserted an equivalent pragma Suppress (All_Checks) to get
10815 -- the required effect.
10817 when Pragma_Suppress_All
=>
10819 Check_Arg_Count
(0);
10821 if Nkind
(Parent
(N
)) /= N_Compilation_Unit_Aux
10822 or else not Is_List_Member
(N
)
10823 or else List_Containing
(N
) /= Pragmas_After
(Parent
(N
))
10826 ("misplaced pragma%, must follow compilation unit");
10829 -------------------------
10830 -- Suppress_Debug_Info --
10831 -------------------------
10833 -- pragma Suppress_Debug_Info ([Entity =>] LOCAL_NAME);
10835 when Pragma_Suppress_Debug_Info
=>
10837 Check_Arg_Count
(1);
10838 Check_Optional_Identifier
(Arg1
, Name_Entity
);
10839 Check_Arg_Is_Local_Name
(Arg1
);
10840 Set_Debug_Info_Off
(Entity
(Get_Pragma_Arg
(Arg1
)));
10842 ----------------------------------
10843 -- Suppress_Exception_Locations --
10844 ----------------------------------
10846 -- pragma Suppress_Exception_Locations;
10848 when Pragma_Suppress_Exception_Locations
=>
10850 Check_Arg_Count
(0);
10851 Check_Valid_Configuration_Pragma
;
10852 Exception_Locations_Suppressed
:= True;
10854 -----------------------------
10855 -- Suppress_Initialization --
10856 -----------------------------
10858 -- pragma Suppress_Initialization ([Entity =>] type_Name);
10860 when Pragma_Suppress_Initialization
=> Suppress_Init
: declare
10866 Check_Arg_Count
(1);
10867 Check_Optional_Identifier
(Arg1
, Name_Entity
);
10868 Check_Arg_Is_Local_Name
(Arg1
);
10870 E_Id
:= Expression
(Arg1
);
10872 if Etype
(E_Id
) = Any_Type
then
10876 E
:= Entity
(E_Id
);
10878 if Is_Type
(E
) then
10879 if Is_Incomplete_Or_Private_Type
(E
) then
10880 if No
(Full_View
(Base_Type
(E
))) then
10882 ("argument of pragma% cannot be an incomplete type",
10885 Set_Suppress_Init_Proc
(Full_View
(Base_Type
(E
)));
10888 Set_Suppress_Init_Proc
(Base_Type
(E
));
10893 ("pragma% requires argument that is a type name", Arg1
);
10901 -- pragma System_Name (DIRECT_NAME);
10903 -- Syntax check: one argument, which must be the identifier GNAT
10904 -- or the identifier GCC, no other identifiers are acceptable.
10906 when Pragma_System_Name
=>
10907 Check_No_Identifiers
;
10908 Check_Arg_Count
(1);
10909 Check_Arg_Is_One_Of
(Arg1
, Name_Gcc
, Name_Gnat
);
10911 -----------------------------
10912 -- Task_Dispatching_Policy --
10913 -----------------------------
10915 -- pragma Task_Dispatching_Policy (policy_IDENTIFIER);
10917 when Pragma_Task_Dispatching_Policy
=> declare
10921 Check_Ada_83_Warning
;
10922 Check_Arg_Count
(1);
10923 Check_No_Identifiers
;
10924 Check_Arg_Is_Task_Dispatching_Policy
(Arg1
);
10925 Check_Valid_Configuration_Pragma
;
10926 Get_Name_String
(Chars
(Expression
(Arg1
)));
10927 DP
:= Fold_Upper
(Name_Buffer
(1));
10929 if Task_Dispatching_Policy
/= ' '
10930 and then Task_Dispatching_Policy
/= DP
10932 Error_Msg_Sloc
:= Task_Dispatching_Policy_Sloc
;
10934 ("task dispatching policy incompatible with policy#");
10936 -- Set new policy, but always preserve System_Location since
10937 -- we like the error message with the run time name.
10940 Task_Dispatching_Policy
:= DP
;
10942 if Task_Dispatching_Policy_Sloc
/= System_Location
then
10943 Task_Dispatching_Policy_Sloc
:= Loc
;
10952 -- pragma Task_Info (EXPRESSION);
10954 when Pragma_Task_Info
=> Task_Info
: declare
10955 P
: constant Node_Id
:= Parent
(N
);
10960 if Nkind
(P
) /= N_Task_Definition
then
10961 Error_Pragma
("pragma% must appear in task definition");
10964 Check_No_Identifiers
;
10965 Check_Arg_Count
(1);
10967 Analyze_And_Resolve
(Expression
(Arg1
), RTE
(RE_Task_Info_Type
));
10969 if Etype
(Expression
(Arg1
)) = Any_Type
then
10973 if Has_Task_Info_Pragma
(P
) then
10974 Error_Pragma
("duplicate pragma% not allowed");
10976 Set_Has_Task_Info_Pragma
(P
, True);
10984 -- pragma Task_Name (string_EXPRESSION);
10986 when Pragma_Task_Name
=> Task_Name
: declare
10987 P
: constant Node_Id
:= Parent
(N
);
10991 Check_No_Identifiers
;
10992 Check_Arg_Count
(1);
10994 Arg
:= Expression
(Arg1
);
10995 Analyze_And_Resolve
(Arg
, Standard_String
);
10997 if Nkind
(P
) /= N_Task_Definition
then
11001 if Has_Task_Name_Pragma
(P
) then
11002 Error_Pragma
("duplicate pragma% not allowed");
11004 Set_Has_Task_Name_Pragma
(P
, True);
11005 Record_Rep_Item
(Defining_Identifier
(Parent
(P
)), N
);
11013 -- pragma Task_Storage (
11014 -- [Task_Type =>] LOCAL_NAME,
11015 -- [Top_Guard =>] static_integer_EXPRESSION);
11017 when Pragma_Task_Storage
=> Task_Storage
: declare
11018 Args
: Args_List
(1 .. 2);
11019 Names
: constant Name_List
(1 .. 2) := (
11023 Task_Type
: Node_Id
renames Args
(1);
11024 Top_Guard
: Node_Id
renames Args
(2);
11030 Gather_Associations
(Names
, Args
);
11032 if No
(Task_Type
) then
11034 ("missing task_type argument for pragma%");
11037 Check_Arg_Is_Local_Name
(Task_Type
);
11039 Ent
:= Entity
(Task_Type
);
11041 if not Is_Task_Type
(Ent
) then
11043 ("argument for pragma% must be task type", Task_Type
);
11046 if No
(Top_Guard
) then
11048 ("pragma% takes two arguments", Task_Type
);
11050 Check_Arg_Is_Static_Expression
(Top_Guard
, Any_Integer
);
11053 Check_First_Subtype
(Task_Type
);
11055 if Rep_Item_Too_Late
(Ent
, N
) then
11064 -- pragma Time_Slice (static_duration_EXPRESSION);
11066 when Pragma_Time_Slice
=> Time_Slice
: declare
11072 Check_Arg_Count
(1);
11073 Check_No_Identifiers
;
11074 Check_In_Main_Program
;
11075 Check_Arg_Is_Static_Expression
(Arg1
, Standard_Duration
);
11077 if not Error_Posted
(Arg1
) then
11079 while Present
(Nod
) loop
11080 if Nkind
(Nod
) = N_Pragma
11081 and then Pragma_Name
(Nod
) = Name_Time_Slice
11083 Error_Msg_Name_1
:= Pname
;
11084 Error_Msg_N
("duplicate pragma% not permitted", Nod
);
11091 -- Process only if in main unit
11093 if Get_Source_Unit
(Loc
) = Main_Unit
then
11094 Opt
.Time_Slice_Set
:= True;
11095 Val
:= Expr_Value_R
(Expression
(Arg1
));
11097 if Val
<= Ureal_0
then
11098 Opt
.Time_Slice_Value
:= 0;
11100 elsif Val
> UR_From_Uint
(UI_From_Int
(1000)) then
11101 Opt
.Time_Slice_Value
:= 1_000_000_000
;
11104 Opt
.Time_Slice_Value
:=
11105 UI_To_Int
(UR_To_Uint
(Val
* UI_From_Int
(1_000_000
)));
11114 -- pragma Title (TITLING_OPTION [, TITLING OPTION]);
11116 -- TITLING_OPTION ::=
11117 -- [Title =>] STRING_LITERAL
11118 -- | [Subtitle =>] STRING_LITERAL
11120 when Pragma_Title
=> Title
: declare
11121 Args
: Args_List
(1 .. 2);
11122 Names
: constant Name_List
(1 .. 2) := (
11128 Gather_Associations
(Names
, Args
);
11130 for J
in 1 .. 2 loop
11131 if Present
(Args
(J
)) then
11132 Check_Arg_Is_String_Literal
(Args
(J
));
11137 ---------------------
11138 -- Unchecked_Union --
11139 ---------------------
11141 -- pragma Unchecked_Union (first_subtype_LOCAL_NAME)
11143 when Pragma_Unchecked_Union
=> Unchecked_Union
: declare
11144 Assoc
: constant Node_Id
:= Arg1
;
11145 Type_Id
: constant Node_Id
:= Expression
(Assoc
);
11156 Check_No_Identifiers
;
11157 Check_Arg_Count
(1);
11158 Check_Arg_Is_Local_Name
(Arg1
);
11160 Find_Type
(Type_Id
);
11161 Typ
:= Entity
(Type_Id
);
11164 or else Rep_Item_Too_Early
(Typ
, N
)
11168 Typ
:= Underlying_Type
(Typ
);
11171 if Rep_Item_Too_Late
(Typ
, N
) then
11175 Check_First_Subtype
(Arg1
);
11177 -- Note remaining cases are references to a type in the current
11178 -- declarative part. If we find an error, we post the error on
11179 -- the relevant type declaration at an appropriate point.
11181 if not Is_Record_Type
(Typ
) then
11182 Error_Msg_N
("Unchecked_Union must be record type", Typ
);
11185 elsif Is_Tagged_Type
(Typ
) then
11186 Error_Msg_N
("Unchecked_Union must not be tagged", Typ
);
11189 elsif Is_Limited_Type
(Typ
) then
11191 ("Unchecked_Union must not be limited record type", Typ
);
11192 Explain_Limited_Type
(Typ
, Typ
);
11196 if not Has_Discriminants
(Typ
) then
11198 ("Unchecked_Union must have one discriminant", Typ
);
11202 Discr
:= First_Discriminant
(Typ
);
11203 while Present
(Discr
) loop
11204 if No
(Discriminant_Default_Value
(Discr
)) then
11206 ("Unchecked_Union discriminant must have default value",
11209 Next_Discriminant
(Discr
);
11212 Tdef
:= Type_Definition
(Declaration_Node
(Typ
));
11213 Clist
:= Component_List
(Tdef
);
11215 Comp
:= First
(Component_Items
(Clist
));
11216 while Present
(Comp
) loop
11217 Check_Component
(Comp
);
11221 if No
(Clist
) or else No
(Variant_Part
(Clist
)) then
11223 ("Unchecked_Union must have variant part",
11228 Vpart
:= Variant_Part
(Clist
);
11230 Variant
:= First
(Variants
(Vpart
));
11231 while Present
(Variant
) loop
11232 Check_Variant
(Variant
);
11237 Set_Is_Unchecked_Union
(Typ
, True);
11238 Set_Convention
(Typ
, Convention_C
);
11240 Set_Has_Unchecked_Union
(Base_Type
(Typ
), True);
11241 Set_Is_Unchecked_Union
(Base_Type
(Typ
), True);
11242 end Unchecked_Union
;
11244 ------------------------
11245 -- Unimplemented_Unit --
11246 ------------------------
11248 -- pragma Unimplemented_Unit;
11250 -- Note: this only gives an error if we are generating code,
11251 -- or if we are in a generic library unit (where the pragma
11252 -- appears in the body, not in the spec).
11254 when Pragma_Unimplemented_Unit
=> Unimplemented_Unit
: declare
11255 Cunitent
: constant Entity_Id
:=
11256 Cunit_Entity
(Get_Source_Unit
(Loc
));
11257 Ent_Kind
: constant Entity_Kind
:=
11262 Check_Arg_Count
(0);
11264 if Operating_Mode
= Generate_Code
11265 or else Ent_Kind
= E_Generic_Function
11266 or else Ent_Kind
= E_Generic_Procedure
11267 or else Ent_Kind
= E_Generic_Package
11269 Get_Name_String
(Chars
(Cunitent
));
11270 Set_Casing
(Mixed_Case
);
11271 Write_Str
(Name_Buffer
(1 .. Name_Len
));
11272 Write_Str
(" is not supported in this configuration");
11274 raise Unrecoverable_Error
;
11276 end Unimplemented_Unit
;
11278 ------------------------
11279 -- Universal_Aliasing --
11280 ------------------------
11282 -- pragma Universal_Aliasing [([Entity =>] type_LOCAL_NAME)];
11284 when Pragma_Universal_Aliasing
=> Universal_Alias
: declare
11289 Check_Arg_Count
(1);
11290 Check_Optional_Identifier
(Arg2
, Name_Entity
);
11291 Check_Arg_Is_Local_Name
(Arg1
);
11292 E_Id
:= Entity
(Expression
(Arg1
));
11294 if E_Id
= Any_Type
then
11296 elsif No
(E_Id
) or else not Is_Type
(E_Id
) then
11297 Error_Pragma_Arg
("pragma% requires type", Arg1
);
11300 Set_Universal_Aliasing
(Implementation_Base_Type
(E_Id
));
11301 end Universal_Alias
;
11303 --------------------
11304 -- Universal_Data --
11305 --------------------
11307 -- pragma Universal_Data [(library_unit_NAME)];
11309 when Pragma_Universal_Data
=>
11312 -- If this is a configuration pragma, then set the universal
11313 -- addressing option, otherwise confirm that the pragma
11314 -- satisfies the requirements of library unit pragma placement
11315 -- and leave it to the GNAAMP back end to detect the pragma
11316 -- (avoids transitive setting of the option due to withed units).
11318 if Is_Configuration_Pragma
then
11319 Universal_Addressing_On_AAMP
:= True;
11321 Check_Valid_Library_Unit_Pragma
;
11324 if not AAMP_On_Target
then
11325 Error_Pragma
("?pragma% ignored (applies only to AAMP)");
11332 -- pragma Unmodified (local_Name {, local_Name});
11334 when Pragma_Unmodified
=> Unmodified
: declare
11335 Arg_Node
: Node_Id
;
11336 Arg_Expr
: Node_Id
;
11337 Arg_Ent
: Entity_Id
;
11341 Check_At_Least_N_Arguments
(1);
11343 -- Loop through arguments
11346 while Present
(Arg_Node
) loop
11347 Check_No_Identifier
(Arg_Node
);
11349 -- Note: the analyze call done by Check_Arg_Is_Local_Name
11350 -- will in fact generate reference, so that the entity will
11351 -- have a reference, which will inhibit any warnings about
11352 -- it not being referenced, and also properly show up in the
11353 -- ali file as a reference. But this reference is recorded
11354 -- before the Has_Pragma_Unreferenced flag is set, so that
11355 -- no warning is generated for this reference.
11357 Check_Arg_Is_Local_Name
(Arg_Node
);
11358 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
11360 if Is_Entity_Name
(Arg_Expr
) then
11361 Arg_Ent
:= Entity
(Arg_Expr
);
11363 if not Is_Assignable
(Arg_Ent
) then
11365 ("pragma% can only be applied to a variable",
11368 Set_Has_Pragma_Unmodified
(Arg_Ent
);
11380 -- pragma Unreferenced (local_Name {, local_Name});
11382 -- or when used in a context clause:
11384 -- pragma Unreferenced (library_unit_NAME {, library_unit_NAME}
11386 when Pragma_Unreferenced
=> Unreferenced
: declare
11387 Arg_Node
: Node_Id
;
11388 Arg_Expr
: Node_Id
;
11389 Arg_Ent
: Entity_Id
;
11394 Check_At_Least_N_Arguments
(1);
11396 -- Check case of appearing within context clause
11398 if Is_In_Context_Clause
then
11400 -- The arguments must all be units mentioned in a with clause
11401 -- in the same context clause. Note we already checked (in
11402 -- Par.Prag) that the arguments are either identifiers or
11403 -- selected components.
11406 while Present
(Arg_Node
) loop
11407 Citem
:= First
(List_Containing
(N
));
11408 while Citem
/= N
loop
11409 if Nkind
(Citem
) = N_With_Clause
11410 and then Same_Name
(Name
(Citem
), Expression
(Arg_Node
))
11412 Set_Has_Pragma_Unreferenced
11415 (Library_Unit
(Citem
))));
11416 Set_Unit_Name
(Expression
(Arg_Node
), Name
(Citem
));
11425 ("argument of pragma% is not with'ed unit", Arg_Node
);
11431 -- Case of not in list of context items
11435 while Present
(Arg_Node
) loop
11436 Check_No_Identifier
(Arg_Node
);
11438 -- Note: the analyze call done by Check_Arg_Is_Local_Name
11439 -- will in fact generate reference, so that the entity will
11440 -- have a reference, which will inhibit any warnings about
11441 -- it not being referenced, and also properly show up in the
11442 -- ali file as a reference. But this reference is recorded
11443 -- before the Has_Pragma_Unreferenced flag is set, so that
11444 -- no warning is generated for this reference.
11446 Check_Arg_Is_Local_Name
(Arg_Node
);
11447 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
11449 if Is_Entity_Name
(Arg_Expr
) then
11450 Arg_Ent
:= Entity
(Arg_Expr
);
11452 -- If the entity is overloaded, the pragma applies to the
11453 -- most recent overloading, as documented. In this case,
11454 -- name resolution does not generate a reference, so it
11455 -- must be done here explicitly.
11457 if Is_Overloaded
(Arg_Expr
) then
11458 Generate_Reference
(Arg_Ent
, N
);
11461 Set_Has_Pragma_Unreferenced
(Arg_Ent
);
11469 --------------------------
11470 -- Unreferenced_Objects --
11471 --------------------------
11473 -- pragma Unreferenced_Objects (local_Name {, local_Name});
11475 when Pragma_Unreferenced_Objects
=> Unreferenced_Objects
: declare
11476 Arg_Node
: Node_Id
;
11477 Arg_Expr
: Node_Id
;
11481 Check_At_Least_N_Arguments
(1);
11484 while Present
(Arg_Node
) loop
11485 Check_No_Identifier
(Arg_Node
);
11486 Check_Arg_Is_Local_Name
(Arg_Node
);
11487 Arg_Expr
:= Get_Pragma_Arg
(Arg_Node
);
11489 if not Is_Entity_Name
(Arg_Expr
)
11490 or else not Is_Type
(Entity
(Arg_Expr
))
11493 ("argument for pragma% must be type or subtype", Arg_Node
);
11496 Set_Has_Pragma_Unreferenced_Objects
(Entity
(Arg_Expr
));
11499 end Unreferenced_Objects
;
11501 ------------------------------
11502 -- Unreserve_All_Interrupts --
11503 ------------------------------
11505 -- pragma Unreserve_All_Interrupts;
11507 when Pragma_Unreserve_All_Interrupts
=>
11509 Check_Arg_Count
(0);
11511 if In_Extended_Main_Code_Unit
(Main_Unit_Entity
) then
11512 Unreserve_All_Interrupts
:= True;
11519 -- pragma Unsuppress (IDENTIFIER [, [On =>] NAME]);
11521 when Pragma_Unsuppress
=>
11523 Process_Suppress_Unsuppress
(False);
11525 -------------------
11526 -- Use_VADS_Size --
11527 -------------------
11529 -- pragma Use_VADS_Size;
11531 when Pragma_Use_VADS_Size
=>
11533 Check_Arg_Count
(0);
11534 Check_Valid_Configuration_Pragma
;
11535 Use_VADS_Size
:= True;
11537 ---------------------
11538 -- Validity_Checks --
11539 ---------------------
11541 -- pragma Validity_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
11543 when Pragma_Validity_Checks
=> Validity_Checks
: declare
11544 A
: constant Node_Id
:= Expression
(Arg1
);
11550 Check_Arg_Count
(1);
11551 Check_No_Identifiers
;
11553 if Nkind
(A
) = N_String_Literal
then
11557 Slen
: constant Natural := Natural (String_Length
(S
));
11558 Options
: String (1 .. Slen
);
11564 C
:= Get_String_Char
(S
, Int
(J
));
11565 exit when not In_Character_Range
(C
);
11566 Options
(J
) := Get_Character
(C
);
11569 Set_Validity_Check_Options
(Options
);
11577 elsif Nkind
(A
) = N_Identifier
then
11579 if Chars
(A
) = Name_All_Checks
then
11580 Set_Validity_Check_Options
("a");
11582 elsif Chars
(A
) = Name_On
then
11583 Validity_Checks_On
:= True;
11585 elsif Chars
(A
) = Name_Off
then
11586 Validity_Checks_On
:= False;
11590 end Validity_Checks
;
11596 -- pragma Volatile (LOCAL_NAME);
11598 when Pragma_Volatile
=>
11599 Process_Atomic_Shared_Volatile
;
11601 -------------------------
11602 -- Volatile_Components --
11603 -------------------------
11605 -- pragma Volatile_Components (array_LOCAL_NAME);
11607 -- Volatile is handled by the same circuit as Atomic_Components
11613 -- pragma Warnings (On | Off);
11614 -- pragma Warnings (On | Off, LOCAL_NAME);
11615 -- pragma Warnings (static_string_EXPRESSION);
11616 -- pragma Warnings (On | Off, STRING_LITERAL);
11618 when Pragma_Warnings
=> Warnings
: begin
11620 Check_At_Least_N_Arguments
(1);
11621 Check_No_Identifiers
;
11624 Argx
: constant Node_Id
:= Get_Pragma_Arg
(Arg1
);
11627 -- One argument case
11629 if Arg_Count
= 1 then
11631 -- On/Off one argument case was processed by parser
11633 if Nkind
(Argx
) = N_Identifier
11635 (Chars
(Argx
) = Name_On
11637 Chars
(Argx
) = Name_Off
)
11641 -- One argument case must be ON/OFF or static string expr
11643 elsif not Is_Static_String_Expression
(Arg1
) then
11645 ("argument of pragma% must be On/Off or " &
11646 "static string expression", Arg2
);
11648 -- One argument string expression case
11652 Lit
: constant Node_Id
:= Expr_Value_S
(Argx
);
11653 Str
: constant String_Id
:= Strval
(Lit
);
11654 Len
: constant Nat
:= String_Length
(Str
);
11662 while J
<= Len
loop
11663 C
:= Get_String_Char
(Str
, J
);
11664 OK
:= In_Character_Range
(C
);
11667 Chr
:= Get_Character
(C
);
11671 if J
< Len
and then Chr
= '.' then
11673 C
:= Get_String_Char
(Str
, J
);
11674 Chr
:= Get_Character
(C
);
11676 if not Set_Dot_Warning_Switch
(Chr
) then
11678 ("invalid warning switch character " &
11685 OK
:= Set_Warning_Switch
(Chr
);
11691 ("invalid warning switch character " & Chr
,
11700 -- Two or more arguments (must be two)
11703 Check_Arg_Is_One_Of
(Arg1
, Name_On
, Name_Off
);
11704 Check_At_Most_N_Arguments
(2);
11712 E_Id
:= Expression
(Arg2
);
11715 -- In the expansion of an inlined body, a reference to
11716 -- the formal may be wrapped in a conversion if the
11717 -- actual is a conversion. Retrieve the real entity name.
11719 if (In_Instance_Body
11720 or else In_Inlined_Body
)
11721 and then Nkind
(E_Id
) = N_Unchecked_Type_Conversion
11723 E_Id
:= Expression
(E_Id
);
11726 -- Entity name case
11728 if Is_Entity_Name
(E_Id
) then
11729 E
:= Entity
(E_Id
);
11736 (E
, (Chars
(Expression
(Arg1
)) = Name_Off
));
11738 if Chars
(Expression
(Arg1
)) = Name_Off
11739 and then Warn_On_Warnings_Off
11741 Warnings_Off_Pragmas
.Append
((N
, E
));
11744 if Is_Enumeration_Type
(E
) then
11748 Lit
:= First_Literal
(E
);
11749 while Present
(Lit
) loop
11750 Set_Warnings_Off
(Lit
);
11751 Next_Literal
(Lit
);
11756 exit when No
(Homonym
(E
));
11761 -- Error if not entity or static string literal case
11763 elsif not Is_Static_String_Expression
(Arg2
) then
11765 ("second argument of pragma% must be entity " &
11766 "name or static string expression", Arg2
);
11768 -- String literal case
11771 String_To_Name_Buffer
11772 (Strval
(Expr_Value_S
(Expression
(Arg2
))));
11774 -- Note on configuration pragma case: If this is a
11775 -- configuration pragma, then for an OFF pragma, we
11776 -- just set Config True in the call, which is all
11777 -- that needs to be done. For the case of ON, this
11778 -- is normally an error, unless it is canceling the
11779 -- effect of a previous OFF pragma in the same file.
11780 -- In any other case, an error will be signalled (ON
11781 -- with no matching OFF).
11783 if Chars
(Argx
) = Name_Off
then
11784 Set_Specific_Warning_Off
11785 (Loc
, Name_Buffer
(1 .. Name_Len
),
11786 Config
=> Is_Configuration_Pragma
);
11788 elsif Chars
(Argx
) = Name_On
then
11789 Set_Specific_Warning_On
11790 (Loc
, Name_Buffer
(1 .. Name_Len
), Err
);
11794 ("?pragma Warnings On with no " &
11795 "matching Warnings Off",
11805 -------------------
11806 -- Weak_External --
11807 -------------------
11809 -- pragma Weak_External ([Entity =>] LOCAL_NAME);
11811 when Pragma_Weak_External
=> Weak_External
: declare
11816 Check_Arg_Count
(1);
11817 Check_Optional_Identifier
(Arg1
, Name_Entity
);
11818 Check_Arg_Is_Library_Level_Local_Name
(Arg1
);
11819 Ent
:= Entity
(Expression
(Arg1
));
11821 if Rep_Item_Too_Early
(Ent
, N
) then
11824 Ent
:= Underlying_Type
(Ent
);
11827 -- The only processing required is to link this item on to the
11828 -- list of rep items for the given entity. This is accomplished
11829 -- by the call to Rep_Item_Too_Late (when no error is detected
11830 -- and False is returned).
11832 if Rep_Item_Too_Late
(Ent
, N
) then
11835 Set_Has_Gigi_Rep_Item
(Ent
);
11839 -----------------------------
11840 -- Wide_Character_Encoding --
11841 -----------------------------
11843 -- pragma Wide_Character_Encoding (IDENTIFIER);
11845 when Pragma_Wide_Character_Encoding
=>
11847 -- Nothing to do, handled in parser. Note that we do not enforce
11848 -- configuration pragma placement, this pragma can appear at any
11849 -- place in the source, allowing mixed encodings within a single
11854 --------------------
11855 -- Unknown_Pragma --
11856 --------------------
11858 -- Should be impossible, since the case of an unknown pragma is
11859 -- separately processed before the case statement is entered.
11861 when Unknown_Pragma
=>
11862 raise Program_Error
;
11866 when Pragma_Exit
=> null;
11867 end Analyze_Pragma
;
11869 -------------------
11870 -- Check_Enabled --
11871 -------------------
11873 function Check_Enabled
(Nam
: Name_Id
) return Boolean is
11877 PP
:= Opt
.Check_Policy_List
;
11880 return Assertions_Enabled
;
11883 Nam
= Chars
(Expression
(First
(Pragma_Argument_Associations
(PP
))))
11886 Chars
(Expression
(Last
(Pragma_Argument_Associations
(PP
))))
11888 when Name_On | Name_Check
=>
11890 when Name_Off | Name_Ignore
=>
11893 raise Program_Error
;
11897 PP
:= Next_Pragma
(PP
);
11902 ---------------------------------
11903 -- Delay_Config_Pragma_Analyze --
11904 ---------------------------------
11906 function Delay_Config_Pragma_Analyze
(N
: Node_Id
) return Boolean is
11908 return Pragma_Name
(N
) = Name_Interrupt_State
11910 Pragma_Name
(N
) = Name_Priority_Specific_Dispatching
;
11911 end Delay_Config_Pragma_Analyze
;
11913 -------------------------
11914 -- Get_Base_Subprogram --
11915 -------------------------
11917 function Get_Base_Subprogram
(Def_Id
: Entity_Id
) return Entity_Id
is
11918 Result
: Entity_Id
;
11921 -- Follow subprogram renaming chain
11924 while Is_Subprogram
(Result
)
11926 (Is_Generic_Instance
(Result
)
11927 or else Nkind
(Parent
(Declaration_Node
(Result
))) =
11928 N_Subprogram_Renaming_Declaration
)
11929 and then Present
(Alias
(Result
))
11931 Result
:= Alias
(Result
);
11935 end Get_Base_Subprogram
;
11937 --------------------
11938 -- Get_Pragma_Arg --
11939 --------------------
11941 function Get_Pragma_Arg
(Arg
: Node_Id
) return Node_Id
is
11943 if Nkind
(Arg
) = N_Pragma_Argument_Association
then
11944 return Expression
(Arg
);
11948 end Get_Pragma_Arg
;
11954 procedure Initialize
is
11959 -----------------------------
11960 -- Is_Config_Static_String --
11961 -----------------------------
11963 function Is_Config_Static_String
(Arg
: Node_Id
) return Boolean is
11965 function Add_Config_Static_String
(Arg
: Node_Id
) return Boolean;
11966 -- This is an internal recursive function that is just like the
11967 -- outer function except that it adds the string to the name buffer
11968 -- rather than placing the string in the name buffer.
11970 ------------------------------
11971 -- Add_Config_Static_String --
11972 ------------------------------
11974 function Add_Config_Static_String
(Arg
: Node_Id
) return Boolean is
11981 if Nkind
(N
) = N_Op_Concat
then
11982 if Add_Config_Static_String
(Left_Opnd
(N
)) then
11983 N
:= Right_Opnd
(N
);
11989 if Nkind
(N
) /= N_String_Literal
then
11990 Error_Msg_N
("string literal expected for pragma argument", N
);
11994 for J
in 1 .. String_Length
(Strval
(N
)) loop
11995 C
:= Get_String_Char
(Strval
(N
), J
);
11997 if not In_Character_Range
(C
) then
11999 ("string literal contains invalid wide character",
12000 Sloc
(N
) + 1 + Source_Ptr
(J
));
12004 Add_Char_To_Name_Buffer
(Get_Character
(C
));
12009 end Add_Config_Static_String
;
12011 -- Start of processing for Is_Config_Static_String
12016 return Add_Config_Static_String
(Arg
);
12017 end Is_Config_Static_String
;
12019 -----------------------------------------
12020 -- Is_Non_Significant_Pragma_Reference --
12021 -----------------------------------------
12023 -- This function makes use of the following static table which indicates
12024 -- whether a given pragma is significant. A value of -1 in this table
12025 -- indicates that the reference is significant. A value of zero indicates
12026 -- than appearance as any argument is insignificant, a positive value
12027 -- indicates that appearance in that parameter position is significant.
12029 -- A value of 99 flags a special case requiring a special check (this is
12030 -- used for cases not covered by this standard encoding, e.g. pragma Check
12031 -- where the first argument is not significant, but the others are).
12033 Sig_Flags
: constant array (Pragma_Id
) of Int
:=
12034 (Pragma_AST_Entry
=> -1,
12035 Pragma_Abort_Defer
=> -1,
12036 Pragma_Ada_83
=> -1,
12037 Pragma_Ada_95
=> -1,
12038 Pragma_Ada_05
=> -1,
12039 Pragma_Ada_2005
=> -1,
12040 Pragma_All_Calls_Remote
=> -1,
12041 Pragma_Annotate
=> -1,
12042 Pragma_Assert
=> -1,
12043 Pragma_Assertion_Policy
=> 0,
12044 Pragma_Asynchronous
=> -1,
12045 Pragma_Atomic
=> 0,
12046 Pragma_Atomic_Components
=> 0,
12047 Pragma_Attach_Handler
=> -1,
12048 Pragma_Check
=> 99,
12049 Pragma_Check_Name
=> 0,
12050 Pragma_Check_Policy
=> 0,
12051 Pragma_CIL_Constructor
=> -1,
12052 Pragma_CPP_Class
=> 0,
12053 Pragma_CPP_Constructor
=> 0,
12054 Pragma_CPP_Virtual
=> 0,
12055 Pragma_CPP_Vtable
=> 0,
12056 Pragma_C_Pass_By_Copy
=> 0,
12057 Pragma_Comment
=> 0,
12058 Pragma_Common_Object
=> -1,
12059 Pragma_Compile_Time_Error
=> -1,
12060 Pragma_Compile_Time_Warning
=> -1,
12061 Pragma_Compiler_Unit
=> 0,
12062 Pragma_Complete_Representation
=> 0,
12063 Pragma_Complex_Representation
=> 0,
12064 Pragma_Component_Alignment
=> -1,
12065 Pragma_Controlled
=> 0,
12066 Pragma_Convention
=> 0,
12067 Pragma_Convention_Identifier
=> 0,
12068 Pragma_Debug
=> -1,
12069 Pragma_Debug_Policy
=> 0,
12070 Pragma_Detect_Blocking
=> -1,
12071 Pragma_Discard_Names
=> 0,
12072 Pragma_Elaborate
=> -1,
12073 Pragma_Elaborate_All
=> -1,
12074 Pragma_Elaborate_Body
=> -1,
12075 Pragma_Elaboration_Checks
=> -1,
12076 Pragma_Eliminate
=> -1,
12077 Pragma_Export
=> -1,
12078 Pragma_Export_Exception
=> -1,
12079 Pragma_Export_Function
=> -1,
12080 Pragma_Export_Object
=> -1,
12081 Pragma_Export_Procedure
=> -1,
12082 Pragma_Export_Value
=> -1,
12083 Pragma_Export_Valued_Procedure
=> -1,
12084 Pragma_Extend_System
=> -1,
12085 Pragma_Extensions_Allowed
=> -1,
12086 Pragma_External
=> -1,
12087 Pragma_Favor_Top_Level
=> -1,
12088 Pragma_External_Name_Casing
=> -1,
12089 Pragma_Fast_Math
=> -1,
12090 Pragma_Finalize_Storage_Only
=> 0,
12091 Pragma_Float_Representation
=> 0,
12092 Pragma_Ident
=> -1,
12093 Pragma_Implemented_By_Entry
=> -1,
12094 Pragma_Implicit_Packing
=> 0,
12095 Pragma_Import
=> +2,
12096 Pragma_Import_Exception
=> 0,
12097 Pragma_Import_Function
=> 0,
12098 Pragma_Import_Object
=> 0,
12099 Pragma_Import_Procedure
=> 0,
12100 Pragma_Import_Valued_Procedure
=> 0,
12101 Pragma_Initialize_Scalars
=> -1,
12102 Pragma_Inline
=> 0,
12103 Pragma_Inline_Always
=> 0,
12104 Pragma_Inline_Generic
=> 0,
12105 Pragma_Inspection_Point
=> -1,
12106 Pragma_Interface
=> +2,
12107 Pragma_Interface_Name
=> +2,
12108 Pragma_Interrupt_Handler
=> -1,
12109 Pragma_Interrupt_Priority
=> -1,
12110 Pragma_Interrupt_State
=> -1,
12111 Pragma_Java_Constructor
=> -1,
12112 Pragma_Java_Interface
=> -1,
12113 Pragma_Keep_Names
=> 0,
12114 Pragma_License
=> -1,
12115 Pragma_Link_With
=> -1,
12116 Pragma_Linker_Alias
=> -1,
12117 Pragma_Linker_Constructor
=> -1,
12118 Pragma_Linker_Destructor
=> -1,
12119 Pragma_Linker_Options
=> -1,
12120 Pragma_Linker_Section
=> -1,
12122 Pragma_Locking_Policy
=> -1,
12123 Pragma_Long_Float
=> -1,
12124 Pragma_Machine_Attribute
=> -1,
12126 Pragma_Main_Storage
=> -1,
12127 Pragma_Memory_Size
=> -1,
12128 Pragma_No_Return
=> 0,
12129 Pragma_No_Body
=> 0,
12130 Pragma_No_Run_Time
=> -1,
12131 Pragma_No_Strict_Aliasing
=> -1,
12132 Pragma_Normalize_Scalars
=> -1,
12133 Pragma_Obsolescent
=> 0,
12134 Pragma_Optimize
=> -1,
12135 Pragma_Optimize_Alignment
=> -1,
12138 Pragma_Passive
=> -1,
12139 Pragma_Preelaborable_Initialization
=> -1,
12140 Pragma_Polling
=> -1,
12141 Pragma_Persistent_BSS
=> 0,
12142 Pragma_Postcondition
=> -1,
12143 Pragma_Precondition
=> -1,
12144 Pragma_Preelaborate
=> -1,
12145 Pragma_Preelaborate_05
=> -1,
12146 Pragma_Priority
=> -1,
12147 Pragma_Priority_Specific_Dispatching
=> -1,
12148 Pragma_Profile
=> 0,
12149 Pragma_Profile_Warnings
=> 0,
12150 Pragma_Propagate_Exceptions
=> -1,
12151 Pragma_Psect_Object
=> -1,
12153 Pragma_Pure_05
=> -1,
12154 Pragma_Pure_Function
=> -1,
12155 Pragma_Queuing_Policy
=> -1,
12156 Pragma_Ravenscar
=> -1,
12157 Pragma_Relative_Deadline
=> -1,
12158 Pragma_Remote_Call_Interface
=> -1,
12159 Pragma_Remote_Types
=> -1,
12160 Pragma_Restricted_Run_Time
=> -1,
12161 Pragma_Restriction_Warnings
=> -1,
12162 Pragma_Restrictions
=> -1,
12163 Pragma_Reviewable
=> -1,
12164 Pragma_Share_Generic
=> -1,
12165 Pragma_Shared
=> -1,
12166 Pragma_Shared_Passive
=> -1,
12167 Pragma_Source_File_Name
=> -1,
12168 Pragma_Source_File_Name_Project
=> -1,
12169 Pragma_Source_Reference
=> -1,
12170 Pragma_Storage_Size
=> -1,
12171 Pragma_Storage_Unit
=> -1,
12172 Pragma_Static_Elaboration_Desired
=> -1,
12173 Pragma_Stream_Convert
=> -1,
12174 Pragma_Style_Checks
=> -1,
12175 Pragma_Subtitle
=> -1,
12176 Pragma_Suppress
=> 0,
12177 Pragma_Suppress_Exception_Locations
=> 0,
12178 Pragma_Suppress_All
=> -1,
12179 Pragma_Suppress_Debug_Info
=> 0,
12180 Pragma_Suppress_Initialization
=> 0,
12181 Pragma_System_Name
=> -1,
12182 Pragma_Task_Dispatching_Policy
=> -1,
12183 Pragma_Task_Info
=> -1,
12184 Pragma_Task_Name
=> -1,
12185 Pragma_Task_Storage
=> 0,
12186 Pragma_Time_Slice
=> -1,
12187 Pragma_Title
=> -1,
12188 Pragma_Unchecked_Union
=> 0,
12189 Pragma_Unimplemented_Unit
=> -1,
12190 Pragma_Universal_Aliasing
=> -1,
12191 Pragma_Universal_Data
=> -1,
12192 Pragma_Unmodified
=> -1,
12193 Pragma_Unreferenced
=> -1,
12194 Pragma_Unreferenced_Objects
=> -1,
12195 Pragma_Unreserve_All_Interrupts
=> -1,
12196 Pragma_Unsuppress
=> 0,
12197 Pragma_Use_VADS_Size
=> -1,
12198 Pragma_Validity_Checks
=> -1,
12199 Pragma_Volatile
=> 0,
12200 Pragma_Volatile_Components
=> 0,
12201 Pragma_Warnings
=> -1,
12202 Pragma_Weak_External
=> -1,
12203 Pragma_Wide_Character_Encoding
=> 0,
12204 Unknown_Pragma
=> 0);
12206 function Is_Non_Significant_Pragma_Reference
(N
: Node_Id
) return Boolean is
12215 if Nkind
(P
) /= N_Pragma_Argument_Association
then
12219 Id
:= Get_Pragma_Id
(Parent
(P
));
12220 C
:= Sig_Flags
(Id
);
12232 -- For pragma Check, the first argument is not significant,
12233 -- the second and the third (if present) arguments are
12236 when Pragma_Check
=>
12238 P
= First
(Pragma_Argument_Associations
(Parent
(P
)));
12241 raise Program_Error
;
12245 A
:= First
(Pragma_Argument_Associations
(Parent
(P
)));
12246 for J
in 1 .. C
- 1 loop
12254 return A
= P
; -- is this wrong way round ???
12257 end Is_Non_Significant_Pragma_Reference
;
12259 ------------------------------
12260 -- Is_Pragma_String_Literal --
12261 ------------------------------
12263 -- This function returns true if the corresponding pragma argument is
12264 -- a static string expression. These are the only cases in which string
12265 -- literals can appear as pragma arguments. We also allow a string
12266 -- literal as the first argument to pragma Assert (although it will
12267 -- of course always generate a type error).
12269 function Is_Pragma_String_Literal
(Par
: Node_Id
) return Boolean is
12270 Pragn
: constant Node_Id
:= Parent
(Par
);
12271 Assoc
: constant List_Id
:= Pragma_Argument_Associations
(Pragn
);
12272 Pname
: constant Name_Id
:= Pragma_Name
(Pragn
);
12278 N
:= First
(Assoc
);
12285 if Pname
= Name_Assert
then
12288 elsif Pname
= Name_Export
then
12291 elsif Pname
= Name_Ident
then
12294 elsif Pname
= Name_Import
then
12297 elsif Pname
= Name_Interface_Name
then
12300 elsif Pname
= Name_Linker_Alias
then
12303 elsif Pname
= Name_Linker_Section
then
12306 elsif Pname
= Name_Machine_Attribute
then
12309 elsif Pname
= Name_Source_File_Name
then
12312 elsif Pname
= Name_Source_Reference
then
12315 elsif Pname
= Name_Title
then
12318 elsif Pname
= Name_Subtitle
then
12324 end Is_Pragma_String_Literal
;
12326 --------------------------------------
12327 -- Process_Compilation_Unit_Pragmas --
12328 --------------------------------------
12330 procedure Process_Compilation_Unit_Pragmas
(N
: Node_Id
) is
12332 -- A special check for pragma Suppress_All. This is a strange DEC
12333 -- pragma, strange because it comes at the end of the unit. If we
12334 -- have a pragma Suppress_All in the Pragmas_After of the current
12335 -- unit, then we insert a pragma Suppress (All_Checks) at the start
12336 -- of the context clause to ensure the correct processing.
12339 PA
: constant List_Id
:= Pragmas_After
(Aux_Decls_Node
(N
));
12343 if Present
(PA
) then
12345 while Present
(P
) loop
12346 if Pragma_Name
(P
) = Name_Suppress_All
then
12347 Prepend_To
(Context_Items
(N
),
12348 Make_Pragma
(Sloc
(P
),
12349 Chars
=> Name_Suppress
,
12350 Pragma_Argument_Associations
=> New_List
(
12351 Make_Pragma_Argument_Association
(Sloc
(P
),
12353 Make_Identifier
(Sloc
(P
),
12354 Chars
=> Name_All_Checks
)))));
12362 end Process_Compilation_Unit_Pragmas
;
12373 --------------------------------
12374 -- Set_Encoded_Interface_Name --
12375 --------------------------------
12377 procedure Set_Encoded_Interface_Name
(E
: Entity_Id
; S
: Node_Id
) is
12378 Str
: constant String_Id
:= Strval
(S
);
12379 Len
: constant Int
:= String_Length
(Str
);
12384 Hex
: constant array (0 .. 15) of Character := "0123456789abcdef";
12387 -- Stores encoded value of character code CC. The encoding we
12388 -- use an underscore followed by four lower case hex digits.
12394 procedure Encode
is
12396 Store_String_Char
(Get_Char_Code
('_'));
12398 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 12))));
12400 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 8 and 16#
0F#
))));
12402 (Get_Char_Code
(Hex
(Integer (CC
/ 2 ** 4 and 16#
0F#
))));
12404 (Get_Char_Code
(Hex
(Integer (CC
and 16#
0F#
))));
12407 -- Start of processing for Set_Encoded_Interface_Name
12410 -- If first character is asterisk, this is a link name, and we
12411 -- leave it completely unmodified. We also ignore null strings
12412 -- (the latter case happens only in error cases) and no encoding
12413 -- should occur for Java or AAMP interface names.
12416 or else Get_String_Char
(Str
, 1) = Get_Char_Code
('*')
12417 or else VM_Target
/= No_VM
12418 or else AAMP_On_Target
12420 Set_Interface_Name
(E
, S
);
12425 CC
:= Get_String_Char
(Str
, J
);
12427 exit when not In_Character_Range
(CC
);
12429 C
:= Get_Character
(CC
);
12431 exit when C
/= '_' and then C
/= '$'
12432 and then C
not in '0' .. '9'
12433 and then C
not in 'a' .. 'z'
12434 and then C
not in 'A' .. 'Z';
12437 Set_Interface_Name
(E
, S
);
12445 -- Here we need to encode. The encoding we use as follows:
12446 -- three underscores + four hex digits (lower case)
12450 for J
in 1 .. String_Length
(Str
) loop
12451 CC
:= Get_String_Char
(Str
, J
);
12453 if not In_Character_Range
(CC
) then
12456 C
:= Get_Character
(CC
);
12458 if C
= '_' or else C
= '$'
12459 or else C
in '0' .. '9'
12460 or else C
in 'a' .. 'z'
12461 or else C
in 'A' .. 'Z'
12463 Store_String_Char
(CC
);
12470 Set_Interface_Name
(E
,
12471 Make_String_Literal
(Sloc
(S
),
12472 Strval
=> End_String
));
12474 end Set_Encoded_Interface_Name
;
12476 -------------------
12477 -- Set_Unit_Name --
12478 -------------------
12480 procedure Set_Unit_Name
(N
: Node_Id
; With_Item
: Node_Id
) is
12485 if Nkind
(N
) = N_Identifier
12486 and then Nkind
(With_Item
) = N_Identifier
12488 Set_Entity
(N
, Entity
(With_Item
));
12490 elsif Nkind
(N
) = N_Selected_Component
then
12491 Change_Selected_Component_To_Expanded_Name
(N
);
12492 Set_Entity
(N
, Entity
(With_Item
));
12493 Set_Entity
(Selector_Name
(N
), Entity
(N
));
12495 Pref
:= Prefix
(N
);
12496 Scop
:= Scope
(Entity
(N
));
12497 while Nkind
(Pref
) = N_Selected_Component
loop
12498 Change_Selected_Component_To_Expanded_Name
(Pref
);
12499 Set_Entity
(Selector_Name
(Pref
), Scop
);
12500 Set_Entity
(Pref
, Scop
);
12501 Pref
:= Prefix
(Pref
);
12502 Scop
:= Scope
(Scop
);
12505 Set_Entity
(Pref
, Scop
);