1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2024, 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 -- Pragma handling is isolated in a separate package
27 -- (logically this processing belongs in chapter 4)
29 with Namet
; use Namet
;
31 with Snames
; use Snames
;
32 with Types
; use Types
;
36 -- The following table lists all pragmas that emulate an Ada 2012 aspect
38 Aspect_Specifying_Pragma
: constant array (Pragma_Id
) of Boolean :=
39 (Pragma_Abstract_State
=> True,
40 Pragma_All_Calls_Remote
=> True,
41 Pragma_Always_Terminates
=> True,
42 Pragma_Annotate
=> True,
43 Pragma_Async_Readers
=> True,
44 Pragma_Async_Writers
=> True,
45 Pragma_Asynchronous
=> True,
46 Pragma_Atomic
=> True,
47 Pragma_Atomic_Components
=> True,
48 Pragma_Attach_Handler
=> True,
49 Pragma_Constant_After_Elaboration
=> True,
50 Pragma_Contract_Cases
=> True,
51 Pragma_Convention
=> True,
53 Pragma_CUDA_Device
=> True,
54 Pragma_CUDA_Global
=> True,
55 Pragma_Default_Initial_Condition
=> True,
56 Pragma_Default_Storage_Pool
=> True,
57 Pragma_Depends
=> True,
58 Pragma_Discard_Names
=> True,
59 Pragma_Dispatching_Domain
=> True,
60 Pragma_Effective_Reads
=> True,
61 Pragma_Effective_Writes
=> True,
62 Pragma_Elaborate_Body
=> True,
63 Pragma_Exceptional_Cases
=> True,
64 Pragma_Export
=> True,
65 Pragma_Extensions_Visible
=> True,
66 Pragma_Favor_Top_Level
=> True,
68 Pragma_Global
=> True,
69 Pragma_GNAT_Annotate
=> True,
70 Pragma_Import
=> True,
71 Pragma_Independent
=> True,
72 Pragma_Independent_Components
=> True,
73 Pragma_Initial_Condition
=> True,
74 Pragma_Initializes
=> True,
75 Pragma_Inline
=> True,
76 Pragma_Inline_Always
=> True,
77 Pragma_Interrupt_Handler
=> True,
78 Pragma_Interrupt_Priority
=> True,
79 Pragma_Invariant
=> True,
80 Pragma_Linker_Section
=> True,
81 Pragma_Lock_Free
=> True,
82 Pragma_No_Elaboration_Code_All
=> True,
83 Pragma_No_Return
=> True,
84 Pragma_Obsolescent
=> True,
86 Pragma_Part_Of
=> True,
87 Pragma_Persistent_BSS
=> True,
89 Pragma_Post_Class
=> True,
90 Pragma_Postcondition
=> True,
92 Pragma_Pre_Class
=> True,
93 Pragma_Precondition
=> True,
94 Pragma_Predicate
=> True,
95 Pragma_Preelaborable_Initialization
=> True,
96 Pragma_Preelaborate
=> True,
97 Pragma_Priority
=> True,
99 Pragma_Pure_Function
=> True,
100 Pragma_Refined_Depends
=> True,
101 Pragma_Refined_Global
=> True,
102 Pragma_Refined_Post
=> True,
103 Pragma_Refined_State
=> True,
104 Pragma_Relative_Deadline
=> True,
105 Pragma_Remote_Access_Type
=> True,
106 Pragma_Remote_Call_Interface
=> True,
107 Pragma_Remote_Types
=> True,
108 Pragma_Secondary_Stack_Size
=> True,
109 Pragma_Shared
=> True,
110 Pragma_Shared_Passive
=> True,
111 Pragma_Simple_Storage_Pool_Type
=> True,
112 Pragma_SPARK_Mode
=> True,
113 Pragma_Storage_Size
=> True,
114 Pragma_Subprogram_Variant
=> True,
115 Pragma_Suppress
=> True,
116 Pragma_Suppress_Debug_Info
=> True,
117 Pragma_Suppress_Initialization
=> True,
118 Pragma_Test_Case
=> True,
119 Pragma_Thread_Local_Storage
=> True,
120 Pragma_Type_Invariant
=> True,
121 Pragma_Unchecked_Union
=> True,
122 Pragma_Universal_Aliasing
=> True,
123 Pragma_Unmodified
=> True,
124 Pragma_Unreferenced
=> True,
125 Pragma_Unreferenced_Objects
=> True,
126 Pragma_Unsuppress
=> True,
127 Pragma_Volatile
=> True,
128 Pragma_Volatile_Components
=> True,
129 Pragma_Volatile_Full_Access
=> True,
130 Pragma_Warnings
=> True,
133 -- The following table lists all pragmas that act as an assertion
136 Assertion_Expression_Pragma
: constant array (Pragma_Id
) of Boolean :=
137 (Pragma_Always_Terminates
=> True,
138 Pragma_Assert
=> True,
139 Pragma_Assert_And_Cut
=> True,
140 Pragma_Assume
=> True,
141 Pragma_Check
=> True,
142 Pragma_Compile_Time_Error
=> True,
143 Pragma_Contract_Cases
=> True,
144 Pragma_Default_Initial_Condition
=> True,
145 Pragma_Exceptional_Cases
=> True,
146 Pragma_Initial_Condition
=> True,
147 Pragma_Invariant
=> True,
148 Pragma_Loop_Invariant
=> True,
149 Pragma_Loop_Variant
=> True,
151 Pragma_Post_Class
=> True,
152 Pragma_Postcondition
=> True,
154 Pragma_Pre_Class
=> True,
155 Pragma_Precondition
=> True,
156 Pragma_Predicate
=> True,
157 Pragma_Refined_Post
=> True,
158 Pragma_Subprogram_Variant
=> True,
159 Pragma_Test_Case
=> True,
160 Pragma_Type_Invariant
=> True,
161 Pragma_Type_Invariant_Class
=> True,
164 -- Should to following constant arrays be renamed to better suit their
165 -- use as a predicate (e.g. Is_Pragma_*) ???
167 -- The following table lists all the implementation-defined pragmas that
168 -- should apply to the anonymous object produced by the analysis of a
169 -- single protected or task type. The table should be synchronized with
170 -- Aspect_On_Anonymous_Object_OK in unit Aspects.
172 Pragma_On_Anonymous_Object_OK
: constant array (Pragma_Id
) of Boolean :=
173 (Pragma_Depends
=> True,
174 Pragma_Global
=> True,
175 Pragma_Part_Of
=> True,
178 -- The following table lists all the implementation-defined pragmas that
179 -- may apply to a body stub (no language defined pragmas apply). The table
180 -- should be synchronized with Aspect_On_Body_Or_Stub_OK in unit Aspects.
182 Pragma_On_Body_Or_Stub_OK
: constant array (Pragma_Id
) of Boolean :=
183 (Pragma_Refined_Depends
=> True,
184 Pragma_Refined_Global
=> True,
185 Pragma_Refined_Post
=> True,
186 Pragma_SPARK_Mode
=> True,
187 Pragma_Warnings
=> True,
190 -- The following table lists all pragmas which are significant in SPARK and
191 -- as a result get translated into verification conditions. The table is an
192 -- amalgamation of the pragmas listed in SPARK RM 16.1 and internally added
195 Pragma_Significant_In_SPARK
: constant array (Pragma_Id
) of Boolean :=
196 (Pragma_All_Calls_Remote
=> False,
197 Pragma_Asynchronous
=> False,
198 Pragma_Default_Storage_Pool
=> False,
199 Pragma_Discard_Names
=> False,
200 Pragma_Dispatching_Domain
=> False,
201 Pragma_Priority_Specific_Dispatching
=> False,
202 Pragma_Remote_Call_Interface
=> False,
203 Pragma_Remote_Types
=> False,
204 Pragma_Shared_Passive
=> False,
205 Pragma_Task_Dispatching_Policy
=> False,
206 Pragma_Unmodified
=> False,
207 Pragma_Unreferenced
=> False,
208 Pragma_Warnings
=> False,
211 -- The following table lists all pragmas which are relevant to the analysis
212 -- of subprogram bodies.
214 Pragma_Significant_To_Subprograms
: constant array (Pragma_Id
) of Boolean :=
215 (Pragma_Always_Terminates
=> True,
216 Pragma_Contract_Cases
=> True,
217 Pragma_Depends
=> True,
218 Pragma_Exceptional_Cases
=> True,
219 Pragma_Ghost
=> True,
220 Pragma_Global
=> True,
221 Pragma_Inline
=> True,
222 Pragma_Inline_Always
=> True,
224 Pragma_Post_Class
=> True,
225 Pragma_Postcondition
=> True,
227 Pragma_Pre_Class
=> True,
228 Pragma_Precondition
=> True,
230 Pragma_Pure_Function
=> True,
231 Pragma_Refined_Depends
=> True,
232 Pragma_Refined_Global
=> True,
233 Pragma_Refined_Post
=> True,
234 Pragma_Refined_State
=> True,
235 Pragma_Side_Effects
=> True,
236 Pragma_Subprogram_Variant
=> True,
237 Pragma_Volatile
=> True,
238 Pragma_Volatile_Function
=> True,
245 procedure Analyze_Pragma
(N
: Node_Id
);
246 -- Analyze procedure for pragma reference node N
248 procedure Analyze_Pragmas_If_Present
(Decl
: Node_Id
; Id
: Pragma_Id
);
249 -- Inspect the list of pragmas after declaration Decl and look for a pragma
250 -- that matches Id. If found, analyze the pragma.
252 procedure Analyze_Always_Terminates_In_Decl_Part
254 Freeze_Id
: Entity_Id
:= Empty
);
255 -- Perform full analysis of delayed pragma Always_Terminates. Freeze_Id is
256 -- the entity of [generic] package body or [generic] subprogram body which
257 -- caused "freezing" of the related contract where the pragma resides.
259 procedure Analyze_Contract_Cases_In_Decl_Part
261 Freeze_Id
: Entity_Id
:= Empty
);
262 -- Perform full analysis of delayed pragma Contract_Cases. Freeze_Id is the
263 -- entity of [generic] package body or [generic] subprogram body which
264 -- caused "freezing" of the related contract where the pragma resides.
266 procedure Analyze_Depends_In_Decl_Part
(N
: Node_Id
);
267 -- Perform full analysis of delayed pragma Depends. This routine is also
268 -- capable of performing basic analysis of pragma Refined_Depends.
270 procedure Analyze_Exceptional_Cases_In_Decl_Part
272 Freeze_Id
: Entity_Id
:= Empty
);
273 -- Perform full analysis of delayed pragma Exceptional_Cases. Freeze_Id is
274 -- the entity of [generic] package body or [generic] subprogram body which
275 -- caused "freezing" of the related contract where the pragma resides.
277 procedure Analyze_External_Property_In_Decl_Part
279 Expr_Val
: out Boolean);
280 -- Perform full analysis of delayed pragmas Async_Readers, Async_Writers,
281 -- Effective_Reads, Effective_Writes and No_Caching. Flag Expr_Val contains
282 -- the Boolean argument of the pragma or a default True if no argument
285 procedure Analyze_Global_In_Decl_Part
(N
: Node_Id
);
286 -- Perform full analysis of delayed pragma Global. This routine is also
287 -- capable of performing basic analysis of pragma Refined_Global.
289 procedure Analyze_Initial_Condition_In_Decl_Part
(N
: Node_Id
);
290 -- Perform full analysis of delayed pragma Initial_Condition
292 procedure Analyze_Initializes_In_Decl_Part
(N
: Node_Id
);
293 -- Perform full analysis of delayed pragma Initializes
295 procedure Analyze_Part_Of_In_Decl_Part
297 Freeze_Id
: Entity_Id
:= Empty
);
298 -- Perform full analysis of delayed pragma Part_Of. Freeze_Id is the entity
299 -- of [generic] package body or [generic] subprogram body which caused the
300 -- "freezing" of the related contract where the pragma resides.
302 procedure Analyze_Pre_Post_Condition_In_Decl_Part
304 Freeze_Id
: Entity_Id
:= Empty
);
305 -- Perform full analysis of pragmas Precondition and Postcondition.
306 -- Freeze_Id denotes the entity of [generic] package body or [generic]
307 -- subprogram body which caused "freezing" of the related contract where
308 -- the pragma resides.
310 procedure Analyze_Refined_Depends_In_Decl_Part
(N
: Node_Id
);
311 -- Preform full analysis of delayed pragma Refined_Depends. This routine
312 -- uses Analyze_Depends_In_Decl_Part as a starting point, then performs
313 -- various consistency checks between Depends and Refined_Depends.
315 procedure Analyze_Refined_Global_In_Decl_Part
(N
: Node_Id
);
316 -- Perform full analysis of delayed pragma Refined_Global. This routine
317 -- uses Analyze_Global_In_Decl_Part as a starting point, then performs
318 -- various consistency checks between Global and Refined_Global.
320 procedure Analyze_Refined_State_In_Decl_Part
322 Freeze_Id
: Entity_Id
:= Empty
);
323 -- Perform full analysis of delayed pragma Refined_State. Freeze_Id denotes
324 -- the entity of [generic] package body or [generic] subprogram body which
325 -- caused "freezing" of the related contract where the pragma resides.
327 procedure Analyze_Subprogram_Variant_In_Decl_Part
329 Freeze_Id
: Entity_Id
:= Empty
);
330 -- Perform full analysis of delayed pragma Subprogram_Variant. Freeze_Id is
331 -- the entity of [generic] package body or [generic] subprogram body which
332 -- caused "freezing" of the related contract where the pragma resides.
334 procedure Analyze_Test_Case_In_Decl_Part
(N
: Node_Id
);
335 -- Perform preanalysis of pragma Test_Case
337 function Build_Pragma_Check_Equivalent
339 Subp_Id
: Entity_Id
:= Empty
;
340 Inher_Id
: Entity_Id
:= Empty
;
341 Keep_Pragma_Id
: Boolean := False) return Node_Id
;
342 -- Transform a pre- or [refined] postcondition denoted by Prag into an
343 -- equivalent pragma Check. When the pre- or postcondition is inherited,
344 -- the routine replaces the references of all formals of Inher_Id
345 -- and primitive operations of its controlling type by references
346 -- to the corresponding entities of Subp_Id and the descendant type.
347 -- Keep_Pragma_Id is True when the newly created pragma should be
348 -- in fact of the same kind as the source pragma Prag. This is used
349 -- in GNATprove_Mode to generate the inherited pre- and postconditions.
351 procedure Check_Applicable_Policy
(N
: Node_Id
);
352 -- N is either an N_Aspect or an N_Pragma node. There are two cases. If
353 -- the name of the aspect or pragma is not one of those recognized as
354 -- an assertion kind by an Assertion_Policy pragma, then the call has
355 -- no effect. Note that in the case of a pragma derived from an aspect,
356 -- the name we use for the purpose of this procedure is the aspect name,
357 -- which may be different from the pragma name (e.g. Precondition for
358 -- Pre aspect). In addition, 'Class aspects are recognized (and the
359 -- corresponding special names used in the processing).
361 -- If the name is a valid assertion kind name, then the Check_Policy pragma
362 -- chain is checked for a matching entry (or for an Assertion entry which
363 -- matches all possibilities). If a matching entry is found then the policy
364 -- is checked. If it is On or Check, then the Is_Checked flag is set in
365 -- the aspect or pragma node. If it is Off, Ignore, or Disable, then the
366 -- Is_Ignored flag is set in the aspect or pragma node. Additionally for
367 -- policy Disable, the Is_Disabled flag is set.
369 -- If no matching Check_Policy pragma is found then the effect depends on
370 -- whether -gnata was used, if so, then the call has no effect, otherwise
371 -- Is_Ignored (but not Is_Disabled) is set True.
373 procedure Check_External_Properties
379 -- Flags AR, AW, ER and EW denote the static values of external properties
380 -- Async_Readers, Async_Writers, Effective_Reads and Effective_Writes. Item
381 -- is the related variable or state. Ensure legality of the combination and
382 -- issue an error for an illegal combination.
384 function Check_Kind
(Nam
: Name_Id
) return Name_Id
;
385 -- This function is used in connection with pragmas Assert, Check,
386 -- and assertion aspects and pragmas, to determine if Check pragmas
387 -- (or corresponding assertion aspects or pragmas) are currently active
388 -- as determined by the presence of -gnata on the command line (which
389 -- sets the default), and the appearance of pragmas Check_Policy and
390 -- Assertion_Policy as configuration pragmas either in a configuration
391 -- pragma file, or at the start of the current unit, or locally given
392 -- Check_Policy and Assertion_Policy pragmas that are currently active.
394 -- The value returned is one of the names Check, Ignore, Disable (On
395 -- returns Check, and Off returns Ignore).
397 -- Note: for assertion kinds Pre'Class, Post'Class, Invariant'Class,
398 -- and Type_Invariant'Class, the name passed is Name_uPre, Name_uPost,
399 -- Name_uInvariant, or Name_uType_Invariant, which corresponds to _Pre,
400 -- _Post, _Invariant, or _Type_Invariant, which are special names used
401 -- in identifiers to represent these attribute references.
403 procedure Check_Missing_Part_Of
(Item_Id
: Entity_Id
);
404 -- Determine whether the placement within the state space of an abstract
405 -- state, variable or package instantiation denoted by Item_Id requires the
406 -- use of indicator/option Part_Of. If this is the case, emit an error.
408 procedure Collect_Inherited_Class_Wide_Conditions
(Subp
: Entity_Id
);
409 -- In GNATprove mode, when analyzing an overriding subprogram, check
410 -- whether the overridden operations have class-wide pre/postconditions,
411 -- and generate the corresponding pragmas. The pragmas are inserted after
412 -- the subprogram declaration, together with those generated for other
413 -- aspects of the subprogram.
415 procedure Collect_Subprogram_Inputs_Outputs
416 (Subp_Id
: Entity_Id
;
417 Synthesize
: Boolean := False;
418 Subp_Inputs
: in out Elist_Id
;
419 Subp_Outputs
: in out Elist_Id
;
420 Global_Seen
: out Boolean);
421 -- Subsidiary to the analysis of pragmas Depends, Global, Refined_Depends
422 -- and Refined_Global. Collect all inputs and outputs of subprogram Subp_Id
423 -- in lists Subp_Inputs (inputs) and Subp_Outputs (outputs). The inputs and
424 -- outputs are gathered from:
425 -- 1) The formal parameters of the subprogram
426 -- 2) The generic formal parameters of the generic subprogram
427 -- 3) The current instance of a concurrent type
428 -- 4) The items of pragma [Refined_]Global
430 -- 5) The items of pragma [Refined_]Depends if there is no pragma
431 -- [Refined_]Global present and flag Synthesize is set to True.
432 -- If the subprogram has no inputs and/or outputs, then the returned list
433 -- is No_Elist. Flag Global_Seen is set when the related subprogram has
434 -- pragma [Refined_]Global.
436 function Delay_Config_Pragma_Analyze
(N
: Node_Id
) return Boolean;
437 -- N is a pragma appearing in a configuration pragma file. Most such
438 -- pragmas are analyzed when the file is read, before parsing and analyzing
439 -- the main unit. However, the analysis of certain pragmas results in
440 -- adding information to the compiled main unit, and this cannot be done
441 -- till the main unit is processed. Such pragmas return True from this
442 -- function and in Frontend pragmas where Delay_Config_Pragma_Analyze is
443 -- True have their analysis delayed until after the main program is parsed
446 function Find_Related_Package_Or_Body
448 Do_Checks
: Boolean := False) return Node_Id
;
449 -- Subsidiary to the analysis of pragmas
454 -- Find the declaration of the related package [body] subject to pragma
455 -- Prag. The return value is either N_Package_Declaration, N_Package_Body,
456 -- or Empty if the placement of the pragma is illegal. If flag Do_Checks is
457 -- set, the routine reports duplicate pragmas.
459 function Find_Related_Declaration_Or_Body
461 Do_Checks
: Boolean := False) return Node_Id
;
462 -- Subsidiary to the analysis of pragmas
467 -- Extensions_Visible
470 -- Max_Entry_Queue_Depth
471 -- Max_Entry_Queue_Length
484 -- Subprogram_Variant
487 -- as well as attributes 'Old and 'Result. Find the declaration of the
488 -- related entry, subprogram or task type [body] subject to pragma Prag.
489 -- If flag Do_Checks is set, the routine reports duplicate pragmas and
490 -- detects improper use of refinement pragmas in stand alone expression
493 function Get_Argument
495 Context_Id
: Entity_Id
:= Empty
) return Node_Id
;
496 -- Obtain the argument of pragma Prag depending on context and the nature
497 -- of the pragma. The argument is extracted in the following manner:
499 -- When the pragma is generated from an aspect, return the corresponding
500 -- aspect when Context_Id denotes a generic unit.
502 -- Otherwise return the first argument of Prag
504 -- Context denotes the entity of the function, package or procedure where
507 function Get_SPARK_Mode_From_Annotation
508 (N
: Node_Id
) return SPARK_Mode_Type
;
509 -- Given an aspect or pragma SPARK_Mode node, return corresponding mode id
511 procedure Initialize
;
512 -- Initializes data structures used for pragma processing. Must be called
513 -- before analyzing each new main source program.
515 function Is_Config_Static_String
(Arg
: Node_Id
) return Boolean;
516 -- This is called for a configuration pragma that requires either string
517 -- literal or a concatenation of string literals. We cannot use normal
518 -- static string processing because it is too early in the case of the
519 -- pragma appearing in a configuration pragmas file. If Arg is of an
520 -- appropriate form, then this call obtains the string (doing any necessary
521 -- concatenations) and places it in Name_Buffer, setting Name_Len to its
522 -- length, and then returns True. If it is not of the correct form, then an
523 -- appropriate error message is posted, and False is returned.
525 function Is_Elaboration_SPARK_Mode
(N
: Node_Id
) return Boolean;
526 -- Determine whether pragma SPARK_Mode appears in the statement part of a
529 function Is_Enabled_Pragma
(Prag
: Node_Id
) return Boolean;
530 -- Determine whether a Boolean-like SPARK pragma Prag is enabled. To be
531 -- considered enabled, the pragma must either:
532 -- * Appear without its Boolean expression
533 -- * The Boolean expression evaluates to "True"
535 -- Boolean-like SPARK pragmas differ from pure Boolean Ada pragmas in that
536 -- their optional Boolean expression must be static and cannot benefit from
537 -- forward references. The following are Boolean-like SPARK pragmas:
540 -- Constant_After_Elaboration
543 -- Extensions_Visible
546 function Is_Non_Significant_Pragma_Reference
(N
: Node_Id
) return Boolean;
547 -- The node N is a node for an entity and the issue is whether the
548 -- occurrence is a reference for the purposes of giving warnings about
549 -- unreferenced variables. This function returns True if the reference is
550 -- not a reference from this point of view (e.g. the occurrence in a pragma
551 -- Pack) and False if it is a real reference (e.g. the occurrence in a
554 function Is_Pragma_String_Literal
(Par
: Node_Id
) return Boolean;
555 -- Given an N_Pragma_Argument_Association node, Par, which has the form of
556 -- an operator symbol, determines whether or not it should be treated as an
557 -- string literal. This is called by Sem_Ch6.Analyze_Operator_Symbol. If
558 -- True is returned, the argument is converted to a string literal. If
559 -- False is returned, then the argument is treated as an entity reference
562 function Is_Private_SPARK_Mode
(N
: Node_Id
) return Boolean;
563 -- Determine whether pragma SPARK_Mode appears in the private part of a
566 function Is_Valid_Assertion_Kind
(Nam
: Name_Id
) return Boolean;
567 -- Returns True if Nam is one of the names recognized as a valid assertion
568 -- kind by the Assertion_Policy pragma. Note that the 'Class cases are
569 -- represented by the corresponding special names Name_uPre, Name_uPost,
570 -- Name_uInvariant, and Name_uType_Invariant (_Pre, _Post, _Invariant,
571 -- and _Type_Invariant).
573 procedure Process_Compilation_Unit_Pragmas
(N
: Node_Id
);
574 -- Called at the start of processing compilation unit N to deal with any
575 -- special issues regarding pragmas. In particular, we have to deal with
576 -- Suppress_All at this stage, since it can appear after the unit instead
577 -- of before (actually we allow it to appear anywhere).
579 procedure Relocate_Pragmas_To_Anonymous_Object
582 -- Relocate all pragmas that appear in the visible declarations of task or
583 -- protected type declaration Typ_Decl after the declaration of anonymous
584 -- object Obj_Decl. Table Pragmas_On_Anonymous_Object_OK contains the list
585 -- of candidate pragmas.
587 procedure Relocate_Pragmas_To_Body
588 (Subp_Body
: Node_Id
;
589 Target_Body
: Node_Id
:= Empty
);
590 -- Resocate all pragmas that follow and apply to subprogram body Subp_Body
591 -- to its own declaration list. Candidate pragmas are classified in table
592 -- Pragma_On_Body_Or_Stub_OK. If Target_Body is set, the pragma are moved
593 -- to the declarations of Target_Body. This formal should be set when
594 -- dealing with subprogram body stubs or expression functions.
596 procedure Set_Encoded_Interface_Name
(E
: Entity_Id
; S
: Node_Id
);
597 -- This routine is used to set an encoded interface name. The node S is
598 -- an N_String_Literal node for the external name to be set, and E is an
599 -- entity whose Interface_Name field is to be set. In the normal case where
600 -- S contains a name that is a valid C identifier, then S is simply set as
601 -- the value of the Interface_Name. Otherwise it is encoded as needed by
602 -- particular operating systems. See the body for details of the encoding.
604 procedure Set_Overflow_Mode
(N
: Node_Id
);
605 -- Sets Sem.Scope_Suppress according to the overflow modes specified in
606 -- the pragma Overflow_Mode passed in argument. This should only be called
607 -- after N has been successfully analyzed.
609 function Test_Case_Arg
612 From_Aspect
: Boolean := False) return Node_Id
;
613 -- Obtain argument "Name", "Mode", "Ensures" or "Requires" from Test_Case
614 -- pragma Prag as denoted by Arg_Nam. When From_Aspect is set, an attempt
615 -- is made to retrieve the argument from the corresponding aspect if there
616 -- is one. The returned argument has several formats:
618 -- N_Pragma_Argument_Association if retrieved directly from the pragma
620 -- N_Component_Association if retrieved from the corresponding aspect and
621 -- the argument appears in a named association form.
623 -- An arbitrary expression if retrieved from the corresponding aspect and
624 -- the argument appears in positional form.
626 -- Empty if there is no such argument
628 procedure Validate_Compile_Time_Warning_Errors
;
629 -- This routine is called after calling the back end to validate pragmas
630 -- Compile_Time_Error and Compile_Time_Warning for size and alignment
631 -- appropriateness. The reason it is called that late is to take advantage
632 -- of any back-annotation of size and alignment performed by the back end.