File : sinfo.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S I N F O --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 1992-2016, Free Software Foundation, Inc. --
10 -- --
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. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- This package defines the structure of the abstract syntax tree. The Tree
33 -- package provides a basic tree structure. Sinfo describes how this structure
34 -- is used to represent the syntax of an Ada program.
35
36 -- The grammar in the RM is followed very closely in the tree design, and is
37 -- repeated as part of this source file.
38
39 -- The tree contains not only the full syntactic representation of the
40 -- program, but also the results of semantic analysis. In particular, the
41 -- nodes for defining identifiers, defining character literals and defining
42 -- operator symbols, collectively referred to as entities, represent what
43 -- would normally be regarded as the symbol table information. In addition a
44 -- number of the tree nodes contain semantic information.
45
46 -- WARNING: Several files are automatically generated from this package.
47 -- See below for details.
48
49 with Namet; use Namet;
50 with Types; use Types;
51 with Uintp; use Uintp;
52 with Urealp; use Urealp;
53
54 package Sinfo is
55
56 ---------------------------------
57 -- Making Changes to This File --
58 ---------------------------------
59
60 -- If changes are made to this file, a number of related steps must be
61 -- carried out to ensure consistency. First, if a field access function is
62 -- added, it appears in these places:
63
64 -- In sinfo.ads:
65 -- The documentation associated with the field (if semantic)
66 -- The documentation associated with the node
67 -- The spec of the access function
68 -- The spec of the set procedure
69 -- The entries in Is_Syntactic_Field
70 -- The pragma Inline for the access function
71 -- The pragma Inline for the set procedure
72 -- In sinfo.adb:
73 -- The body of the access function
74 -- The body of the set procedure
75
76 -- The field chosen must be consistent in all places, and, for a node that
77 -- is a subexpression, must not overlap any of the standard expression
78 -- fields.
79
80 -- In addition, if any of the standard expression fields is changed, then
81 -- the utility program which creates the Treeprs spec (in file treeprs.ads)
82 -- must be updated appropriately, since it special cases expression fields.
83
84 -- If a new tree node is added, then the following changes are made:
85
86 -- Add it to the documentation in the appropriate place
87 -- Add its fields to this documentation section
88 -- Define it in the appropriate classification in Node_Kind
89 -- Add an entry in Is_Syntactic_Field
90 -- In the body (sinfo), add entries to the access functions for all
91 -- its fields (except standard expression fields) to include the new
92 -- node in the checks.
93 -- Add an appropriate section to the case statement in sprint.adb
94 -- Add an appropriate section to the case statement in sem.adb
95 -- Add an appropriate section to the case statement in exp_util.adb
96 -- (Insert_Actions procedure)
97 -- For a subexpression, add an appropriate section to the case
98 -- statement in sem_eval.adb
99 -- For a subexpression, add an appropriate section to the case
100 -- statement in sem_res.adb
101
102 -- All back ends must be made aware of the new node kind.
103
104 -- Finally, four utility programs must be run:
105
106 -- (Optional.) Run CSinfo to check that you have made the changes
107 -- consistently. It checks most of the rules given above. This utility
108 -- reads sinfo.ads and sinfo.adb and generates a report to standard
109 -- output. This step is optional because XSinfo runs CSinfo.
110
111 -- Run XSinfo to create sinfo.h, the corresponding C header. This
112 -- utility reads sinfo.ads and generates sinfo.h. Note that it does
113 -- not need to read sinfo.adb, since the contents of the body are
114 -- algorithmically determinable from the spec.
115
116 -- Run XTreeprs to create treeprs.ads, an updated version of the module
117 -- that is used to drive the tree print routine. This utility reads (but
118 -- does not modify) treeprs.adt, the template that provides the basic
119 -- structure of the file, and then fills in the data from the comments
120 -- in sinfo.ads.
121
122 -- Run XNmake to create nmake.ads and nmake.adb, the package body and
123 -- spec of the Nmake package which contains functions for constructing
124 -- nodes.
125
126 -- The above steps are done automatically by the build scripts when you do
127 -- a full bootstrap.
128
129 -- Note: sometime we could write a utility that actually generated the body
130 -- of sinfo from the spec instead of simply checking it, since, as noted
131 -- above, the contents of the body can be determined from the spec.
132
133 --------------------------------
134 -- Implicit Nodes in the Tree --
135 --------------------------------
136
137 -- Generally the structure of the tree very closely follows the grammar as
138 -- defined in the RM. However, certain nodes are omitted to save space and
139 -- simplify semantic processing. Two general classes of such omitted nodes
140 -- are as follows:
141
142 -- If the only possibilities for a non-terminal are one or more other
143 -- non-terminals (i.e. the rule is a "skinny" rule), then usually the
144 -- corresponding node is omitted from the tree, and the target construct
145 -- appears directly. For example, a real type definition is either
146 -- floating point definition or a fixed point definition. No explicit node
147 -- appears for real type definition. Instead either the floating point
148 -- definition or fixed point definition appears directly.
149
150 -- If a non-terminal corresponds to a list of some other non-terminal
151 -- (possibly with separating punctuation), then usually it is omitted from
152 -- the tree, and a list of components appears instead. For example,
153 -- sequence of statements does not appear explicitly in the tree. Instead
154 -- a list of statements appears directly.
155
156 -- Some additional cases of omitted nodes occur and are documented
157 -- individually. In particular, many nodes are omitted in the tree
158 -- generated for an expression.
159
160 -------------------------------------------
161 -- Handling of Defining Identifier Lists --
162 -------------------------------------------
163
164 -- In several declarative forms in the syntax, lists of defining
165 -- identifiers appear (object declarations, component declarations, number
166 -- declarations etc.)
167
168 -- The semantics of such statements are equivalent to a series of identical
169 -- declarations of single defining identifiers (except that conformance
170 -- checks require the same grouping of identifiers in the parameter case).
171
172 -- To simplify semantic processing, the parser breaks down such multiple
173 -- declaration cases into sequences of single declarations, duplicating
174 -- type and initialization information as required. The flags More_Ids and
175 -- Prev_Ids are used to record the original form of the source in the case
176 -- where the original source used a list of names, More_Ids being set on
177 -- all but the last name and Prev_Ids being set on all but the first name.
178 -- These flags are used to reconstruct the original source (e.g. in the
179 -- Sprint package), and also are included in the conformance checks, but
180 -- otherwise have no semantic significance.
181
182 -- Note: the reason that we use More_Ids and Prev_Ids rather than
183 -- First_Name and Last_Name flags is so that the flags are off in the
184 -- normal one identifier case, which minimizes tree print output.
185
186 -----------------------
187 -- Use of Node Lists --
188 -----------------------
189
190 -- With a few exceptions, if a construction of the form {non-terminal}
191 -- appears in the tree, lists are used in the corresponding tree node (see
192 -- package Nlists for handling of node lists). In this case a field of the
193 -- parent node points to a list of nodes for the non-terminal. The field
194 -- name for such fields has a plural name which always ends in "s". For
195 -- example, a case statement has a field Alternatives pointing to list of
196 -- case statement alternative nodes.
197
198 -- Only fields pointing to lists have names ending in "s", so generally the
199 -- structure is strongly typed, fields not ending in s point to single
200 -- nodes, and fields ending in s point to lists.
201
202 -- The following example shows how a traversal of a list is written. We
203 -- suppose here that Stmt points to a N_Case_Statement node which has a
204 -- list field called Alternatives:
205
206 -- Alt := First (Alternatives (Stmt));
207 -- while Present (Alt) loop
208 -- ..
209 -- -- processing for case statement alternative Alt
210 -- ..
211 -- Alt := Next (Alt);
212 -- end loop;
213
214 -- The Present function tests for Empty, which in this case signals the end
215 -- of the list. First returns Empty immediately if the list is empty.
216 -- Present is defined in Atree, First and Next are defined in Nlists.
217
218 -- The exceptions to this rule occur with {DEFINING_IDENTIFIERS} in all
219 -- contexts, which is handled as described in the previous section, and
220 -- with {,library_unit_NAME} in the N_With_Clause mode, which is handled
221 -- using the First_Name and Last_Name flags, as further detailed in the
222 -- description of the N_With_Clause node.
223
224 -------------
225 -- Pragmas --
226 -------------
227
228 -- Pragmas can appear in many different context, but are not included in
229 -- the grammar. Still they must appear in the tree, so they can be properly
230 -- processed.
231
232 -- Two approaches are used. In some cases, an extra field is defined in an
233 -- appropriate node that contains a list of pragmas appearing in the
234 -- expected context. For example pragmas can appear before an
235 -- Accept_Alternative in a Selective_Accept_Statement, and these pragmas
236 -- appear in the Pragmas_Before field of the N_Accept_Alternative node.
237
238 -- The other approach is to simply allow pragmas to appear in syntactic
239 -- lists where the grammar (of course) does not include the possibility.
240 -- For example, the Variants field of an N_Variant_Part node points to a
241 -- list that can contain both N_Pragma and N_Variant nodes.
242
243 -- To make processing easier in the latter case, the Nlists package
244 -- provides a set of routines (First_Non_Pragma, Last_Non_Pragma,
245 -- Next_Non_Pragma, Prev_Non_Pragma) that allow such lists to be handled
246 -- ignoring all pragmas.
247
248 -- In the case of the variants list, we can either write:
249
250 -- Variant := First (Variants (N));
251 -- while Present (Variant) loop
252 -- ...
253 -- Variant := Next (Variant);
254 -- end loop;
255
256 -- or
257
258 -- Variant := First_Non_Pragma (Variants (N));
259 -- while Present (Variant) loop
260 -- ...
261 -- Variant := Next_Non_Pragma (Variant);
262 -- end loop;
263
264 -- In the first form of the loop, Variant can either be an N_Pragma or an
265 -- N_Variant node. In the second form, Variant can only be N_Variant since
266 -- all pragmas are skipped.
267
268 ---------------------
269 -- Optional Fields --
270 ---------------------
271
272 -- Fields which correspond to a section of the syntax enclosed in square
273 -- brackets are generally omitted (and the corresponding field set to Empty
274 -- for a node, or No_List for a list). The documentation of such fields
275 -- notes these cases. One exception to this rule occurs in the case of
276 -- possibly empty statement sequences (such as the sequence of statements
277 -- in an entry call alternative). Such cases appear in the syntax rules as
278 -- [SEQUENCE_OF_STATEMENTS] and the fields corresponding to such optional
279 -- statement sequences always contain an empty list (not No_List) if no
280 -- statements are present.
281
282 -- Note: the utility program that constructs the body and spec of the Nmake
283 -- package relies on the format of the comments to determine if a field
284 -- should have a default value in the corresponding make routine. The rule
285 -- is that if the first line of the description of the field contains the
286 -- string "(set to xxx if", then a default value of xxx is provided for
287 -- this field in the corresponding Make_yyy routine.
288
289 -----------------------------------
290 -- Note on Body/Spec Terminology --
291 -----------------------------------
292
293 -- In informal discussions about Ada, it is customary to refer to package
294 -- and subprogram specs and bodies. However, this is not technically
295 -- correct, what is normally referred to as a spec or specification is in
296 -- fact a package declaration or subprogram declaration. We are careful in
297 -- GNAT to use the correct terminology and in particular, the full word
298 -- specification is never used as an incorrect substitute for declaration.
299 -- The structure and terminology used in the tree also reflects the grammar
300 -- and thus uses declaration and specification in the technically correct
301 -- manner.
302
303 -- However, there are contexts in which the informal terminology is useful.
304 -- We have the word "body" to refer to the Interp_Etype declared by the
305 -- declaration of a unit body, and in some contexts we need similar term to
306 -- refer to the entity declared by the package or subprogram declaration,
307 -- and simply using declaration can be confusing since the body also has a
308 -- declaration.
309
310 -- An example of such a context is the link between the package body and
311 -- its declaration. With_Declaration is confusing, since the package body
312 -- itself is a declaration.
313
314 -- To deal with this problem, we reserve the informal term Spec, i.e. the
315 -- popular abbreviation used in this context, to refer to the entity
316 -- declared by the package or subprogram declaration. So in the above
317 -- example case, the field in the body is called With_Spec.
318
319 -- Another important context for the use of the word Spec is in error
320 -- messages, where a hyper-correct use of declaration would be confusing to
321 -- a typical Ada programmer, and even for an expert programmer can cause
322 -- confusion since the body has a declaration as well.
323
324 -- So, to summarize:
325
326 -- Declaration always refers to the syntactic entity that is called
327 -- a declaration. In particular, subprogram declaration
328 -- and package declaration are used to describe the
329 -- syntactic entity that includes the semicolon.
330
331 -- Specification always refers to the syntactic entity that is called
332 -- a specification. In particular, the terms procedure
333 -- specification, function specification, package
334 -- specification, subprogram specification always refer
335 -- to the syntactic entity that has no semicolon.
336
337 -- Spec is an informal term, used to refer to the entity
338 -- that is declared by a task declaration, protected
339 -- declaration, generic declaration, subprogram
340 -- declaration or package declaration.
341
342 -- This convention is followed throughout the GNAT documentation
343 -- both internal and external, and in all error message text.
344
345 ------------------------
346 -- Internal Use Nodes --
347 ------------------------
348
349 -- These are Node_Kind settings used in the internal implementation which
350 -- are not logically part of the specification.
351
352 -- N_Unused_At_Start
353 -- Completely unused entry at the start of the enumeration type. This
354 -- is inserted so that no legitimate value is zero, which helps to get
355 -- better debugging behavior, since zero is a likely uninitialized value).
356
357 -- N_Unused_At_End
358 -- Completely unused entry at the end of the enumeration type. This is
359 -- handy so that arrays with Node_Kind as the index type have an extra
360 -- entry at the end (see for example the use of the Pchar_Pos_Array in
361 -- Treepr, where the extra entry provides the limit value when dealing with
362 -- the last used entry in the array).
363
364 -----------------------------------------
365 -- Note on the settings of Sloc fields --
366 -----------------------------------------
367
368 -- The Sloc field of nodes that come from the source is set by the parser.
369 -- For internal nodes, and nodes generated during expansion the Sloc is
370 -- usually set in the call to the constructor for the node. In general the
371 -- Sloc value chosen for an internal node is the Sloc of the source node
372 -- whose processing is responsible for the expansion. For example, the Sloc
373 -- of an inherited primitive operation is the Sloc of the corresponding
374 -- derived type declaration.
375
376 -- For the nodes of a generic instantiation, the Sloc value is encoded to
377 -- represent both the original Sloc in the generic unit, and the Sloc of
378 -- the instantiation itself. See Sinput.ads for details.
379
380 -- Subprogram instances create two callable entities: one is the visible
381 -- subprogram instance, and the other is an anonymous subprogram nested
382 -- within a wrapper package that contains the renamings for the actuals.
383 -- Both of these entities have the Sloc of the defining entity in the
384 -- instantiation node. This simplifies some ASIS queries.
385
386 -----------------------
387 -- Field Definitions --
388 -----------------------
389
390 -- In the following node definitions, all fields, both syntactic and
391 -- semantic, are documented. The one exception is in the case of entities
392 -- (defining identifiers, character literals and operator symbols), where
393 -- the usage of the fields depends on the entity kind. Entity fields are
394 -- fully documented in the separate package Einfo.
395
396 -- In the node definitions, three common sets of fields are abbreviated to
397 -- save both space in the documentation, and also space in the string
398 -- (defined in Tree_Print_Strings) used to print trees. The following
399 -- abbreviations are used:
400
401 -- Note: the utility program that creates the Treeprs spec (in the file
402 -- xtreeprs.adb) knows about the special fields here, so it must be
403 -- modified if any change is made to these fields.
404
405 -- "plus fields for binary operator"
406 -- Chars (Name1) Name_Id for the operator
407 -- Left_Opnd (Node2) left operand expression
408 -- Right_Opnd (Node3) right operand expression
409 -- Entity (Node4-Sem) defining entity for operator
410 -- Associated_Node (Node4-Sem) for generic processing
411 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
412 -- Has_Private_View (Flag11-Sem) set in generic units.
413
414 -- "plus fields for unary operator"
415 -- Chars (Name1) Name_Id for the operator
416 -- Right_Opnd (Node3) right operand expression
417 -- Entity (Node4-Sem) defining entity for operator
418 -- Associated_Node (Node4-Sem) for generic processing
419 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
420 -- Has_Private_View (Flag11-Sem) set in generic units.
421
422 -- "plus fields for expression"
423 -- Paren_Count number of parentheses levels
424 -- Etype (Node5-Sem) type of the expression
425 -- Is_Overloaded (Flag5-Sem) >1 type interpretation exists
426 -- Is_Static_Expression (Flag6-Sem) set for static expression
427 -- Raises_Constraint_Error (Flag7-Sem) evaluation raises CE
428 -- Must_Not_Freeze (Flag8-Sem) set if must not freeze
429 -- Do_Range_Check (Flag9-Sem) set if a range check needed
430 -- Has_Dynamic_Length_Check (Flag10-Sem) set if length check inserted
431 -- Has_Dynamic_Range_Check (Flag12-Sem) set if range check inserted
432 -- Assignment_OK (Flag15-Sem) set if modification is OK
433 -- Is_Controlling_Actual (Flag16-Sem) set for controlling argument
434
435 -- Note: see under (EXPRESSION) for further details on the use of
436 -- the Paren_Count field to record the number of parentheses levels.
437
438 -- Node_Kind is the type used in the Nkind field to indicate the node kind.
439 -- The actual definition of this type is given later (the reason for this
440 -- is that we want the descriptions ordered by logical chapter in the RM,
441 -- but the type definition is reordered to facilitate the definition of
442 -- some subtype ranges. The individual descriptions of the nodes show how
443 -- the various fields are used in each node kind, as well as providing
444 -- logical names for the fields. Functions and procedures are provided for
445 -- accessing and setting these fields using these logical names.
446
447 -----------------------
448 -- Gigi Restrictions --
449 -----------------------
450
451 -- The tree passed to Gigi is more restricted than the general tree form.
452 -- For example, as a result of expansion, most of the tasking nodes can
453 -- never appear. For each node to which either a complete or partial
454 -- restriction applies, a note entitled "Gigi restriction" appears which
455 -- documents the restriction.
456
457 -- Note that most of these restrictions apply only to trees generated when
458 -- code is being generated, since they involved expander actions that
459 -- destroy the tree.
460
461 ---------------
462 -- ASIS Mode --
463 ---------------
464
465 -- When a file is compiled in ASIS mode (-gnatct), expansion is skipped,
466 -- and the analysis must generate a tree in a form that meets all ASIS
467 -- requirements.
468
469 -- ASIS must be able to recover the original tree that corresponds to the
470 -- source. It relies heavily on Original_Node for this purpose, which as
471 -- described in Atree, records the history when a node is rewritten. ASIS
472 -- uses Original_Node to recover the original node before the Rewrite.
473
474 -- At least in ASIS mode (not really important in non-ASIS mode), when
475 -- N1 is rewritten as N2:
476
477 -- The subtree rooted by the original node N1 should be fully decorated,
478 -- i.e. all semantic fields noted in sinfo.ads should be set properly
479 -- and any referenced entities should be complete (with exceptions for
480 -- representation information, noted below).
481
482 -- For all the direct descendants of N1 (original node) their Parent
483 -- links should point not to N1, but to N2 (rewriting node).
484
485 -- The Parent links of rewritten nodes (N1 in this example) are set in
486 -- some cases (to point to the rewritten parent), but in other cases
487 -- they are set to Empty. This needs sorting out ??? It would be much
488 -- cleaner if they could always be set in the original node ???
489
490 -- There are a few cases when ASIS has to use not the original, but the
491 -- rewritten tree structures. This happens when because of some important
492 -- technical reasons it is impossible or very hard to have the original
493 -- structure properly decorated by semantic information, and the rewritten
494 -- structure fully reproduces the original source. Below is the (incomplete
495 -- for the moment???) list of such exceptions:
496 --
497 -- Generic specifications and generic bodies
498 -- Function calls that use prefixed notation (Operand.Operation [(...)])
499
500 -- Representation Information
501
502 -- For the purposes of the data description annex, the representation
503 -- information for source declared entities must be complete in the
504 -- ASIS tree.
505
506 -- This requires that the front end call the back end (gigi/gcc) in
507 -- a special "back annotate only" mode to obtain information on layout
508 -- from the back end.
509
510 -- For the purposes of this special "back annotate only" mode, the
511 -- requirements that would normally need to be met to generate code
512 -- are relaxed as follows:
513
514 -- Anonymous types need not have full representation information (e.g.
515 -- sizes need not be set for types where the front end would normally
516 -- set the sizes), since anonymous types can be ignored in this mode.
517
518 -- In this mode, gigi will see at least fragments of a fully annotated
519 -- unexpanded tree. This means that it will encounter nodes it does
520 -- not normally handle (such as stubs, task bodies etc). It should
521 -- simply ignore these nodes, since they are not relevant to the task
522 -- of back annotating representation information.
523
524 -- Some other ASIS-specific issues are covered in specific comments in
525 -- sections for particular nodes or flags.
526
527 ----------------
528 -- Ghost Mode --
529 ----------------
530
531 -- When a declaration is subject to pragma Ghost, it establishes a Ghost
532 -- region depending on the Ghost assertion policy in effect at the point
533 -- of declaration. This region is temporal and starts right before the
534 -- analysis of the Ghost declaration and ends after its expansion. The
535 -- values of global variable Opt.Ghost_Mode are as follows:
536
537 -- 1. Check - All static semantics as defined in SPARK RM 6.9 are in
538 -- effect.
539
540 -- 2. Ignore - Same as Check, ignored Ghost code is not present in ALI
541 -- files, object files as well as the final executable.
542
543 -- To achieve the runtime semantics of "Ignore", the compiler marks each
544 -- node created during an ignored Ghost region and signals all enclosing
545 -- scopes that such a node resides within. The compilation unit where the
546 -- node resides is also added to an auxiliary table for post processing.
547
548 -- After the analysis and expansion of all compilation units takes place
549 -- as well as the instantiation of all inlined [generic] bodies, the GNAT
550 -- driver initiates a separate pass which removes all ignored Ghost code
551 -- from all units stored in the auxiliary table.
552
553 --------------------
554 -- GNATprove Mode --
555 --------------------
556
557 -- When a file is compiled in GNATprove mode (-gnatd.F), a very light
558 -- expansion is performed and the analysis must generate a tree in a
559 -- form that meets additional requirements.
560
561 -- This light expansion does two transformations of the tree that cannot
562 -- be postponed till after semantic analysis:
563
564 -- 1. Replace object renamings by renamed object. This requires the
565 -- introduction of temporaries at the point of the renaming, which
566 -- must be properly analyzed.
567
568 -- 2. Fully qualify entity names. This is needed to generate suitable
569 -- local effects and call-graphs in ALI files, with the completely
570 -- qualified names (in particular the suffix to distinguish homonyms).
571
572 -- The tree after this light expansion should be fully analyzed
573 -- semantically, which sometimes requires the insertion of semantic
574 -- pre-analysis, for example for subprogram contracts and pragma
575 -- check/assert. In particular, all expression must have their proper type,
576 -- and semantic links should be set between tree nodes (partial to full
577 -- view, etc.) Some kinds of nodes should be either absent, or can be
578 -- ignored by the formal verification backend:
579
580 -- N_Object_Renaming_Declaration: can be ignored safely
581 -- N_Expression_Function: absent (rewritten)
582 -- N_Expression_With_Actions: absent (not generated)
583
584 -- SPARK cross-references are generated from the regular cross-references
585 -- (used for browsing and code understanding) and additional references
586 -- collected during semantic analysis, in particular on all dereferences.
587 -- These SPARK cross-references are output in a separate section of ALI
588 -- files, as described in spark_xrefs.adb. They are the basis for the
589 -- computation of data dependences in GNATprove. This implies that all
590 -- cross-references should be generated in this mode, even those that would
591 -- not make sense from a user point-of-view, and that cross-references that
592 -- do not lead to data dependences for subprograms can be safely ignored.
593
594 -- GNATprove relies on the following front end behaviors:
595
596 -- 1. The first declarations in the list of visible declarations of
597 -- a package declaration for a generic instance, up to the first
598 -- declaration which comes from source, should correspond to
599 -- the "mappings nodes" between formal and actual generic parameters.
600
601 -- 2. In addition pragma Debug statements are removed from the tree
602 -- (rewritten to NULL stmt), since they should be ignored in formal
603 -- verification.
604
605 -- 3. An error is also issued for missing subunits, similar to the
606 -- warning issued when generating code, to avoid formal verification
607 -- of a partial unit.
608
609 -- 4. Unconstrained types are not replaced by constrained types whose
610 -- bounds are generated from an expression: Expand_Subtype_From_Expr
611 -- should be a no-op.
612
613 -- 5. Errors (instead of warnings) are issued on compile-time-known
614 -- constraint errors even though such cases do not correspond to
615 -- illegalities in the Ada RM (this is simply another case where
616 -- GNATprove implements a subset of the full language).
617 --
618 -- However, there are a few exceptions to this rule for cases where
619 -- we want to allow the GNATprove analysis to proceed (e.g. range
620 -- checks on empty ranges, which typically appear in deactivated
621 -- code in a particular configuration).
622
623 -- 6. Subtypes should match in the AST, even after a generic is
624 -- instantiated. In particular, GNATprove relies on the fact that,
625 -- on a selected component, the type of the selected component is
626 -- the type of the corresponding component in the prefix of the
627 -- selected component.
628 --
629 -- Note that, in some cases, we know that this rule is broken by the
630 -- frontend. In particular, if the selected component is a packed
631 -- array depending on a discriminant of a unconstrained formal object
632 -- parameter of a generic.
633
634 -----------------------
635 -- Check Flag Fields --
636 -----------------------
637
638 -- The following flag fields appear in expression nodes:
639
640 -- Do_Division_Check
641 -- Do_Overflow_Check
642 -- Do_Range_Check
643
644 -- These three flags are always set by the front end during semantic
645 -- analysis, on expression nodes that may trigger the corresponding
646 -- check. The front end then inserts or not the check during expansion. In
647 -- particular, these flags should also be correctly set in ASIS mode and
648 -- GNATprove mode.
649
650 -- Note: the expander always takes care of the Do_Range check case,
651 -- so this flag will never be set in the expanded tree passed to the
652 -- back end code generator.
653
654 -- Note that this accounts for all nodes that trigger the corresponding
655 -- checks, except for range checks on subtype_indications, which may be
656 -- required to check that a range_constraint is compatible with the given
657 -- subtype (RM 3.2.2(11)).
658
659 -- The following flag fields appear in various nodes:
660
661 -- Do_Accessibility_Check
662 -- Do_Discriminant_Check
663 -- Do_Length_Check
664 -- Do_Storage_Check
665 -- Do_Tag_Check
666
667 -- These flags are used in some specific cases by the front end, either
668 -- during semantic analysis or during expansion, and cannot be expected
669 -- to be set on all nodes that trigger the corresponding check.
670
671 ------------------------
672 -- Common Flag Fields --
673 ------------------------
674
675 -- The following flag fields appear in all nodes:
676
677 -- Analyzed
678 -- This flag is used to indicate that a node (and all its children have
679 -- been analyzed. It is used to avoid reanalysis of a node that has
680 -- already been analyzed, both for efficiency and functional correctness
681 -- reasons.
682
683 -- Comes_From_Source
684 -- This flag is set if the node comes directly from an explicit construct
685 -- in the source. It is normally on for any nodes built by the scanner or
686 -- parser from the source program, with the exception that in a few cases
687 -- the parser adds nodes to normalize the representation (in particular
688 -- a null statement is added to a package body if there is no begin/end
689 -- initialization section.
690 --
691 -- Most nodes inserted by the analyzer or expander are not considered
692 -- as coming from source, so the flag is off for such nodes. In a few
693 -- cases, the expander constructs nodes closely equivalent to nodes
694 -- from the source program (e.g. the allocator built for build-in-place
695 -- case), and the Comes_From_Source flag is deliberately set.
696
697 -- Error_Posted
698 -- This flag is used to avoid multiple error messages being posted on or
699 -- referring to the same node. This flag is set if an error message
700 -- refers to a node or is posted on its source location, and has the
701 -- effect of inhibiting further messages involving this same node.
702
703 -----------------------
704 -- Modify_Tree_For_C --
705 -----------------------
706
707 -- If the flag Opt.Modify_Tree_For_C is set True, then the tree is modified
708 -- in ways that help match the semantics better with C, easing the task of
709 -- interfacing to C code generators (other than GCC, where the work is done
710 -- in gigi, and there is no point in changing that), and also making life
711 -- easier for Cprint in generating C source code.
712
713 -- The current modifications implemented are as follows:
714
715 -- N_Op_Rotate_Left, N_Op_Rotate_Right, N_Shift_Right_Arithmetic nodes
716 -- are eliminated from the tree (since these operations do not exist in
717 -- C), and the operations are rewritten in terms of logical shifts and
718 -- other logical operations that do exist in C. See Exp_Ch4 expansion
719 -- routines for these operators for details of the transformations made.
720
721 -- The right operand of N_Op_Shift_Right and N_Op_Shift_Left is always
722 -- less than the word size (since other values are not well-defined in
723 -- C). This is done using an explicit test if necessary.
724
725 -- Min and Max attributes are expanded into equivalent if expressions,
726 -- dealing properly with side effect issues.
727
728 -- Mod for signed integer types is expanded into equivalent expressions
729 -- using Rem (which is % in C) and other C-available operators.
730
731 -- Functions returning bounded arrays are transformed into procedures
732 -- with an extra out parameter, and the calls updated accordingly.
733
734 -- Aggregates are only kept unexpanded for object declarations, otherwise
735 -- they are systematically expanded into loops (for arrays) and
736 -- individual assignments (for records).
737
738 ------------------------------------
739 -- Description of Semantic Fields --
740 ------------------------------------
741
742 -- The meaning of the syntactic fields is generally clear from their names
743 -- without any further description, since the names are chosen to
744 -- correspond very closely to the syntax in the reference manual. This
745 -- section describes the usage of the semantic fields, which are used to
746 -- contain additional information determined during semantic analysis.
747
748 -- ABE_Is_Certain (Flag18-Sem)
749 -- This flag is set in an instantiation node or a call node is determined
750 -- to be sure to raise an ABE. This is used to trigger special handling
751 -- of such cases, particularly in the instantiation case where we avoid
752 -- instantiating the body if this flag is set. This flag is also present
753 -- in an N_Formal_Package_Declaration node since formal package
754 -- declarations are treated like instantiations, but it is always set to
755 -- False in this context.
756
757 -- Accept_Handler_Records (List5-Sem)
758 -- This field is present only in an N_Accept_Alternative node. It is used
759 -- to temporarily hold the exception handler records from an accept
760 -- statement in a selective accept. These exception handlers will
761 -- eventually be placed in the Handler_Records list of the procedure
762 -- built for this accept (see Expand_N_Selective_Accept procedure in
763 -- Exp_Ch9 for further details).
764
765 -- Access_Types_To_Process (Elist2-Sem)
766 -- Present in N_Freeze_Entity nodes for Incomplete or private types.
767 -- Contains the list of access types which may require specific treatment
768 -- when the nature of the type completion is completely known. An example
769 -- of such treatment is the generation of the associated_final_chain.
770
771 -- Actions (List1-Sem)
772 -- This field contains a sequence of actions that are associated with the
773 -- node holding the field. See the individual node types for details of
774 -- how this field is used, as well as the description of the specific use
775 -- for a particular node type.
776
777 -- Activation_Chain_Entity (Node3-Sem)
778 -- This is used in tree nodes representing task activators (blocks,
779 -- subprogram bodies, package declarations, and task bodies). It is
780 -- initially Empty, and then gets set to point to the entity for the
781 -- declared Activation_Chain variable when the first task is declared.
782 -- When tasks are declared in the corresponding declarative region this
783 -- entity is located by name (its name is always _Chain) and the declared
784 -- tasks are added to the chain. Note that N_Extended_Return_Statement
785 -- does not have this attribute, although it does have an activation
786 -- chain. This chain is used to store the tasks temporarily, and is not
787 -- used for activating them. On successful completion of the return
788 -- statement, the tasks are moved to the caller's chain, and the caller
789 -- activates them.
790
791 -- Acts_As_Spec (Flag4-Sem)
792 -- A flag set in the N_Subprogram_Body node for a subprogram body which
793 -- is acting as its own spec. In the case of a library-level subprogram
794 -- the flag is set as well on the parent compilation unit node.
795
796 -- Actual_Designated_Subtype (Node4-Sem)
797 -- Present in N_Free_Statement and N_Explicit_Dereference nodes. If gigi
798 -- needs to known the dynamic constrained subtype of the designated
799 -- object, this attribute is set to that type. This is done for
800 -- N_Free_Statements for access-to-classwide types and access to
801 -- unconstrained packed array types, and for N_Explicit_Dereference when
802 -- the designated type is an unconstrained packed array and the
803 -- dereference is the prefix of a 'Size attribute reference.
804
805 -- Address_Warning_Posted (Flag18-Sem)
806 -- Present in N_Attribute_Definition nodes. Set to indicate that we have
807 -- posted a warning for the address clause regarding size or alignment
808 -- issues. Used to inhibit multiple redundant messages.
809
810 -- Aggregate_Bounds (Node3-Sem)
811 -- Present in array N_Aggregate nodes. If the bounds of the aggregate are
812 -- known at compile time, this field points to an N_Range node with those
813 -- bounds. Otherwise Empty.
814
815 -- All_Others (Flag11-Sem)
816 -- Present in an N_Others_Choice node. This flag is set for an others
817 -- exception where all exceptions are to be caught, even those that are
818 -- not normally handled (in particular the tasking abort signal). This
819 -- is used for translation of the at end handler into a normal exception
820 -- handler.
821
822 -- Aspect_Rep_Item (Node2-Sem)
823 -- Present in N_Aspect_Specification nodes. Points to the corresponding
824 -- pragma/attribute definition node used to process the aspect.
825
826 -- Assignment_OK (Flag15-Sem)
827 -- This flag is set in a subexpression node for an object, indicating
828 -- that the associated object can be modified, even if this would not
829 -- normally be permissible (either by direct assignment, or by being
830 -- passed as an out or in-out parameter). This is used by the expander
831 -- for a number of purposes, including initialization of constants and
832 -- limited type objects (such as tasks), setting discriminant fields,
833 -- setting tag values, etc. N_Object_Declaration nodes also have this
834 -- flag defined. Here it is used to indicate that an initialization
835 -- expression is valid, even where it would normally not be allowed
836 -- (e.g. where the type involved is limited). It is also used to stop
837 -- a Force_Evaluation call for an unchecked conversion, but this usage
838 -- is unclear and not documented ???
839
840 -- Associated_Node (Node4-Sem)
841 -- Present in nodes that can denote an entity: identifiers, character
842 -- literals, operator symbols, expanded names, operator nodes, and
843 -- attribute reference nodes (all these nodes have an Entity field).
844 -- This field is also present in N_Aggregate, N_Selected_Component, and
845 -- N_Extension_Aggregate nodes. This field is used in generic processing
846 -- to create links between the generic template and the generic copy.
847 -- See Sem_Ch12.Get_Associated_Node for full details. Note that this
848 -- field overlaps Entity, which is fine, since, as explained in Sem_Ch12,
849 -- the normal function of Entity is not required at the point where the
850 -- Associated_Node is set. Note also, that in generic templates, this
851 -- means that the Entity field does not necessarily point to an Entity.
852 -- Since the back end is expected to ignore generic templates, this is
853 -- harmless.
854
855 -- Atomic_Sync_Required (Flag14-Sem)
856 -- This flag is set on a node for which atomic synchronization is
857 -- required for the corresponding reference or modification.
858
859 -- At_End_Proc (Node1)
860 -- This field is present in an N_Handled_Sequence_Of_Statements node.
861 -- It contains an identifier reference for the cleanup procedure to be
862 -- called. See description of this node for further details.
863
864 -- Backwards_OK (Flag6-Sem)
865 -- A flag present in the N_Assignment_Statement node. It is used only
866 -- if the type being assigned is an array type, and is set if analysis
867 -- determines that it is definitely safe to do the copy backwards, i.e.
868 -- starting at the highest addressed element. This is the case if either
869 -- the operands do not overlap, or they may overlap, but if they do,
870 -- then the left operand is at a higher address than the right operand.
871 --
872 -- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
873 -- means that the front end could not determine that either direction is
874 -- definitely safe, and a runtime check may be required if the backend
875 -- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
876 -- set, it means that the front end can assure no overlap of operands.
877
878 -- Body_To_Inline (Node3-Sem)
879 -- Present in subprogram declarations. Denotes analyzed but unexpanded
880 -- body of subprogram, to be used when inlining calls. Present when the
881 -- subprogram has an Inline pragma and inlining is enabled. If the
882 -- declaration is completed by a renaming_as_body, and the renamed entity
883 -- is a subprogram, the Body_To_Inline is the name of that entity, which
884 -- is used directly in later calls to the original subprogram.
885
886 -- Body_Required (Flag13-Sem)
887 -- A flag that appears in the N_Compilation_Unit node indicating that
888 -- the corresponding unit requires a body. For the package case, this
889 -- indicates that a completion is required. In Ada 95, if the flag is not
890 -- set for the package case, then a body may not be present. In Ada 83,
891 -- if the flag is not set for the package case, then body is optional.
892 -- For a subprogram declaration, the flag is set except in the case where
893 -- a pragma Import or Interface applies, in which case no body is
894 -- permitted (in Ada 83 or Ada 95).
895
896 -- By_Ref (Flag5-Sem)
897 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement,
898 -- this flag is set when the returned expression is already allocated on
899 -- the secondary stack and thus the result is passed by reference rather
900 -- than copied another time.
901
902 -- Cleanup_Actions (List5-Sem)
903 -- Present in block statements created for transient blocks, contains
904 -- additional cleanup actions carried over from the transient scope.
905
906 -- Check_Address_Alignment (Flag11-Sem)
907 -- A flag present in N_Attribute_Definition clause for a 'Address
908 -- attribute definition. This flag is set if a dynamic check should be
909 -- generated at the freeze point for the entity to which this address
910 -- clause applies. The reason that we need this flag is that we want to
911 -- check for range checks being suppressed at the point where the
912 -- attribute definition clause is given, rather than testing this at the
913 -- freeze point.
914
915 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
916 -- Present in N_Simple_Return_Statement nodes. True if this node was
917 -- constructed as part of the N_Extended_Return_Statement expansion.
918
919 -- Compile_Time_Known_Aggregate (Flag18-Sem)
920 -- Present in N_Aggregate nodes. Set for aggregates which can be fully
921 -- evaluated at compile time without raising constraint error. Such
922 -- aggregates can be passed as is the back end without any expansion.
923 -- See Exp_Aggr for specific conditions under which this flag gets set.
924
925 -- Componentwise_Assignment (Flag14-Sem)
926 -- Present in N_Assignment_Statement nodes. Set for a record assignment
927 -- where all that needs doing is to expand it into component-by-component
928 -- assignments. This is used internally for the case of tagged types with
929 -- rep clauses, where we need to avoid recursion (we don't want to try to
930 -- generate a call to the primitive operation, because this is the case
931 -- where we are compiling the primitive operation). Note that when we are
932 -- expanding component assignments in this case, we never assign the _tag
933 -- field, but we recursively assign components of the parent type.
934
935 -- Condition_Actions (List3-Sem)
936 -- This field appears in else-if nodes and in the iteration scheme node
937 -- for while loops. This field is only used during semantic processing to
938 -- temporarily hold actions inserted into the tree. In the tree passed
939 -- to gigi, the condition actions field is always set to No_List. For
940 -- details on how this field is used, see the routine Insert_Actions in
941 -- package Exp_Util, and also the expansion routines for the relevant
942 -- nodes.
943
944 -- Context_Pending (Flag16-Sem)
945 -- This field appears in Compilation_Unit nodes, to indicate that the
946 -- context of the unit is being compiled. Used to detect circularities
947 -- that are not otherwise detected by the loading mechanism. Such
948 -- circularities can occur in the presence of limited and non-limited
949 -- with_clauses that mention the same units.
950
951 -- Controlling_Argument (Node1-Sem)
952 -- This field is set in procedure and function call nodes if the call
953 -- is a dispatching call (it is Empty for a non-dispatching call). It
954 -- indicates the source of the call's controlling tag. For procedure
955 -- calls, the Controlling_Argument is one of the actuals. For function
956 -- that has a dispatching result, it is an entity in the context of the
957 -- call that can provide a tag, or else it is the tag of the root type
958 -- of the class. It can also specify a tag directly rather than being a
959 -- tagged object. The latter is needed by the implementations of AI-239
960 -- and AI-260.
961
962 -- Conversion_OK (Flag14-Sem)
963 -- A flag set on type conversion nodes to indicate that the conversion
964 -- is to be considered as being valid, even though it is the case that
965 -- the conversion is not valid Ada. This is used for attributes Enum_Rep,
966 -- Fixed_Value and Integer_Value, for internal conversions done for
967 -- fixed-point operations, and for certain conversions for calls to
968 -- initialization procedures. If Conversion_OK is set, then Etype must be
969 -- set (the analyzer assumes that Etype has been set). For the case of
970 -- fixed-point operands, it also indicates that the conversion is to be
971 -- direct conversion of the underlying integer result, with no regard to
972 -- the small operand.
973
974 -- Convert_To_Return_False (Flag13-Sem)
975 -- Present in N_Raise_Expression nodes that appear in the body of the
976 -- special predicateM function used to test a predicate in the context
977 -- of a membership test, where raise expression results in returning a
978 -- value of False rather than raising an exception.
979
980 -- Corresponding_Aspect (Node3-Sem)
981 -- Present in N_Pragma node. Used to point back to the source aspect from
982 -- the corresponding pragma. This field is Empty for source pragmas.
983
984 -- Corresponding_Body (Node5-Sem)
985 -- This field is set in subprogram declarations, package declarations,
986 -- entry declarations of protected types, and in generic units. It points
987 -- to the defining entity for the corresponding body (NOT the node for
988 -- the body itself).
989
990 -- Corresponding_Formal_Spec (Node3-Sem)
991 -- This field is set in subprogram renaming declarations, where it points
992 -- to the defining entity for a formal subprogram in the case where the
993 -- renaming corresponds to a generic formal subprogram association in an
994 -- instantiation. The field is Empty if the renaming does not correspond
995 -- to such a formal association.
996
997 -- Corresponding_Generic_Association (Node5-Sem)
998 -- This field is defined for object declarations and object renaming
999 -- declarations. It is set for the declarations within an instance that
1000 -- map generic formals to their actuals. If set, the field points to
1001 -- a generic_association which is the original parent of the expression
1002 -- or name appearing in the declaration. This simplifies ASIS queries.
1003
1004 -- Corresponding_Integer_Value (Uint4-Sem)
1005 -- This field is set in real literals of fixed-point types (it is not
1006 -- used for floating-point types). It contains the integer value used
1007 -- to represent the fixed-point value. It is also set on the universal
1008 -- real literals used to represent bounds of fixed-point base types
1009 -- and their first named subtypes.
1010
1011 -- Corresponding_Spec (Node5-Sem)
1012 -- This field is set in subprogram, package, task, and protected body
1013 -- nodes, where it points to the defining entity in the corresponding
1014 -- spec. The attribute is also set in N_With_Clause nodes where it points
1015 -- to the defining entity for the with'ed spec, and in a subprogram
1016 -- renaming declaration when it is a Renaming_As_Body. The field is Empty
1017 -- if there is no corresponding spec, as in the case of a subprogram body
1018 -- that serves as its own spec.
1019 --
1020 -- In Ada 2012, Corresponding_Spec is set on expression functions that
1021 -- complete a subprogram declaration.
1022
1023 -- Corresponding_Spec_Of_Stub (Node2-Sem)
1024 -- This field is present in subprogram, package, task and protected body
1025 -- stubs where it points to the corresponding spec of the stub. Due to
1026 -- clashes in the structure of nodes, we cannot use Corresponding_Spec.
1027
1028 -- Corresponding_Stub (Node3-Sem)
1029 -- This field is present in an N_Subunit node. It holds the node in
1030 -- the parent unit that is the stub declaration for the subunit. It is
1031 -- set when analysis of the stub forces loading of the proper body. If
1032 -- expansion of the proper body creates new declarative nodes, they are
1033 -- inserted at the point of the corresponding_stub.
1034
1035 -- Dcheck_Function (Node5-Sem)
1036 -- This field is present in an N_Variant node, It references the entity
1037 -- for the discriminant checking function for the variant.
1038
1039 -- Default_Expression (Node5-Sem)
1040 -- This field is Empty if there is no default expression. If there is a
1041 -- simple default expression (one with no side effects), then this field
1042 -- simply contains a copy of the Expression field (both point to the tree
1043 -- for the default expression). Default_Expression is used for
1044 -- conformance checking.
1045
1046 -- Default_Storage_Pool (Node3-Sem)
1047 -- This field is present in N_Compilation_Unit_Aux nodes. It is set to a
1048 -- copy of Opt.Default_Pool at the end of the compilation unit. See
1049 -- package Opt for details. This is used for inheriting the
1050 -- Default_Storage_Pool in child units.
1051
1052 -- Discr_Check_Funcs_Built (Flag11-Sem)
1053 -- This flag is present in N_Full_Type_Declaration nodes. It is set when
1054 -- discriminant checking functions are constructed. The purpose is to
1055 -- avoid attempting to set these functions more than once.
1056
1057 -- Do_Accessibility_Check (Flag13-Sem)
1058 -- This flag is set on N_Parameter_Specification nodes to indicate
1059 -- that an accessibility check is required for the parameter. It is
1060 -- not yet decided who takes care of this check (TBD ???).
1061
1062 -- Do_Discriminant_Check (Flag1-Sem)
1063 -- This flag is set on N_Selected_Component nodes to indicate that a
1064 -- discriminant check is required using the discriminant check routine
1065 -- associated with the selector. The actual check is generated by the
1066 -- expander when processing selected components. In the case of
1067 -- Unchecked_Union, the flag is also set, but no discriminant check
1068 -- routine is associated with the selector, and the expander does not
1069 -- generate a check. This flag is also present in assignment statements
1070 -- (and set if the assignment requires a discriminant check), and in type
1071 -- conversion nodes (and set if the conversion requires a check).
1072
1073 -- Do_Division_Check (Flag13-Sem)
1074 -- This flag is set on a division operator (/ mod rem) to indicate
1075 -- that a zero divide check is required. The actual check is dealt
1076 -- with by the backend (all the front end does is to set the flag).
1077
1078 -- Do_Length_Check (Flag4-Sem)
1079 -- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
1080 -- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
1081 -- is required. It is not determined who deals with this flag (???).
1082
1083 -- Do_Overflow_Check (Flag17-Sem)
1084 -- This flag is set on an operator where an overflow check is required on
1085 -- the operation. The actual check is dealt with by the backend (all the
1086 -- front end does is to set the flag). The other cases where this flag is
1087 -- used is on a Type_Conversion node and for attribute reference nodes.
1088 -- For a type conversion, it means that the conversion is from one base
1089 -- type to another, and the value may not fit in the target base type.
1090 -- See also the description of Do_Range_Check for this case. The only
1091 -- attribute references which use this flag are Pred and Succ, where it
1092 -- means that the result should be checked for going outside the base
1093 -- range. Note that this flag is not set for modular types. This flag is
1094 -- also set on if and case expression nodes if we are operating in either
1095 -- MINIMIZED or ELIMINATED overflow checking mode (to make sure that we
1096 -- properly process overflow checking for dependent expressions).
1097
1098 -- Do_Range_Check (Flag9-Sem)
1099 -- This flag is set on an expression which appears in a context where a
1100 -- range check is required. The target type is clear from the context.
1101 -- The contexts in which this flag can appear are the following:
1102
1103 -- Right side of an assignment. In this case the target type is
1104 -- taken from the left side of the assignment, which is referenced
1105 -- by the Name of the N_Assignment_Statement node.
1106
1107 -- Subscript expressions in an indexed component. In this case the
1108 -- target type is determined from the type of the array, which is
1109 -- referenced by the Prefix of the N_Indexed_Component node.
1110
1111 -- Argument expression for a parameter, appearing either directly in
1112 -- the Parameter_Associations list of a call or as the Expression of an
1113 -- N_Parameter_Association node that appears in this list. In either
1114 -- case, the check is against the type of the formal. Note that the
1115 -- flag is relevant only in IN and IN OUT parameters, and will be
1116 -- ignored for OUT parameters, where no check is required in the call,
1117 -- and if a check is required on the return, it is generated explicitly
1118 -- with a type conversion.
1119
1120 -- Initialization expression for the initial value in an object
1121 -- declaration. In this case the Do_Range_Check flag is set on
1122 -- the initialization expression, and the check is against the
1123 -- range of the type of the object being declared. This includes the
1124 -- cases of expressions providing default discriminant values, and
1125 -- expressions used to initialize record components.
1126
1127 -- The expression of a type conversion. In this case the range check is
1128 -- against the target type of the conversion. See also the use of
1129 -- Do_Overflow_Check on a type conversion. The distinction is that the
1130 -- overflow check protects against a value that is outside the range of
1131 -- the target base type, whereas a range check checks that the
1132 -- resulting value (which is a value of the base type of the target
1133 -- type), satisfies the range constraint of the target type.
1134
1135 -- Note: when a range check is required in contexts other than those
1136 -- listed above (e.g. in a return statement), an additional type
1137 -- conversion node is introduced to represent the required check.
1138
1139 -- A special case arises for the arguments of the Pred/Succ attributes.
1140 -- Here the range check needed is against First + 1 .. Last (Pred) or
1141 -- First .. Last - 1 (Succ) of the corresponding base type. Essentially
1142 -- these checks are what would be performed within the implicit body of
1143 -- the functions that correspond to these attributes. In these cases,
1144 -- the Do_Range check flag is set on the argument to the attribute
1145 -- function, and the back end must special case the appropriate range
1146 -- to check against.
1147
1148 -- Do_Storage_Check (Flag17-Sem)
1149 -- This flag is set in an N_Allocator node to indicate that a storage
1150 -- check is required for the allocation, or in an N_Subprogram_Body node
1151 -- to indicate that a stack check is required in the subprogram prologue.
1152 -- The N_Allocator case is handled by the routine that expands the call
1153 -- to the runtime routine. The N_Subprogram_Body case is handled by the
1154 -- backend, and all the semantics does is set the flag.
1155
1156 -- Do_Tag_Check (Flag13-Sem)
1157 -- This flag is set on an N_Assignment_Statement, N_Function_Call,
1158 -- N_Procedure_Call_Statement, N_Type_Conversion,
1159 -- N_Simple_Return_Statement, or N_Extended_Return_Statement
1160 -- node to indicate that the tag check can be suppressed. It is not
1161 -- yet decided how this flag is used (TBD ???).
1162
1163 -- Elaborate_Present (Flag4-Sem)
1164 -- This flag is set in the N_With_Clause node to indicate that pragma
1165 -- Elaborate pragma appears for the with'ed units.
1166
1167 -- Elaborate_All_Desirable (Flag9-Sem)
1168 -- This flag is set in the N_With_Clause mode to indicate that the static
1169 -- elaboration processing has determined that an Elaborate_All pragma is
1170 -- desirable for correct elaboration for this unit.
1171
1172 -- Elaborate_All_Present (Flag14-Sem)
1173 -- This flag is set in the N_With_Clause node to indicate that a
1174 -- pragma Elaborate_All pragma appears for the with'ed units.
1175
1176 -- Elaborate_Desirable (Flag11-Sem)
1177 -- This flag is set in the N_With_Clause mode to indicate that the static
1178 -- elaboration processing has determined that an Elaborate pragma is
1179 -- desirable for correct elaboration for this unit.
1180
1181 -- Else_Actions (List3-Sem)
1182 -- This field is present in if expression nodes. During code
1183 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1184 -- actions at an appropriate place in the tree to get elaborated at the
1185 -- right time. For if expressions, we have to be sure that the actions
1186 -- for the Else branch are only elaborated if the condition is False.
1187 -- The Else_Actions field is used as a temporary parking place for
1188 -- these actions. The final tree is always rewritten to eliminate the
1189 -- need for this field, so in the tree passed to Gigi, this field is
1190 -- always set to No_List.
1191
1192 -- Enclosing_Variant (Node2-Sem)
1193 -- This field is present in the N_Variant node and identifies the Node_Id
1194 -- corresponding to the immediately enclosing variant when the variant is
1195 -- nested, and N_Empty otherwise. Set during semantic processing of the
1196 -- variant part of a record type.
1197
1198 -- Entity (Node4-Sem)
1199 -- Appears in all direct names (identifiers, character literals, and
1200 -- operator symbols), as well as expanded names, and attributes that
1201 -- denote entities, such as 'Class. Points to entity for corresponding
1202 -- defining occurrence. Set after name resolution. For identifiers in a
1203 -- WITH list, the corresponding defining occurrence is in a separately
1204 -- compiled file, and Entity must be set by the library Load procedure.
1205 --
1206 -- Note: During name resolution, the value in Entity may be temporarily
1207 -- incorrect (e.g. during overload resolution, Entity is initially set to
1208 -- the first possible correct interpretation, and then later modified if
1209 -- necessary to contain the correct value after resolution).
1210 --
1211 -- Note: This field overlaps Associated_Node, which is used during
1212 -- generic processing (see Sem_Ch12 for details). Note also that in
1213 -- generic templates, this means that the Entity field does not always
1214 -- point to an Entity. Since the back end is expected to ignore generic
1215 -- templates, this is harmless.
1216 --
1217 -- Note: This field also appears in N_Attribute_Definition_Clause nodes.
1218 -- It is used only for stream attributes definition clauses. In this
1219 -- case, it denotes a (possibly dummy) subprogram entity that is declared
1220 -- conceptually at the point of the clause. Thus the visibility of the
1221 -- attribute definition clause (in the sense of 8.3(23) as amended by
1222 -- AI-195) can be checked by testing the visibility of that subprogram.
1223 --
1224 -- Note: Normally the Entity field of an identifier points to the entity
1225 -- for the corresponding defining identifier, and hence the Chars field
1226 -- of an identifier will match the Chars field of the entity. However,
1227 -- there is no requirement that these match, and there are obscure cases
1228 -- of generated code where they do not match.
1229
1230 -- Note: Ada 2012 aspect specifications require additional links between
1231 -- identifiers and various attributes. These attributes can be of
1232 -- arbitrary types, and the entity field of identifiers that denote
1233 -- aspects must be used to store arbitrary expressions for later semantic
1234 -- checks. See section on aspect specifications for details.
1235
1236 -- Entity_Or_Associated_Node (Node4-Sem)
1237 -- A synonym for both Entity and Associated_Node. Used by convention in
1238 -- the code when referencing this field in cases where it is not known
1239 -- whether the field contains an Entity or an Associated_Node.
1240
1241 -- Etype (Node5-Sem)
1242 -- Appears in all expression nodes, all direct names, and all entities.
1243 -- Points to the entity for the related type. Set after type resolution.
1244 -- Normally this is the actual subtype of the expression. However, in
1245 -- certain contexts such as the right side of an assignment, subscripts,
1246 -- arguments to calls, returned value in a function, initial value etc.
1247 -- it is the desired target type. In the event that this is different
1248 -- from the actual type, the Do_Range_Check flag will be set if a range
1249 -- check is required. Note: if the Is_Overloaded flag is set, then Etype
1250 -- points to an essentially arbitrary choice from the possible set of
1251 -- types.
1252
1253 -- Exception_Junk (Flag8-Sem)
1254 -- This flag is set in a various nodes appearing in a statement sequence
1255 -- to indicate that the corresponding node is an artifact of the
1256 -- generated code for exception handling, and should be ignored when
1257 -- analyzing the control flow of the relevant sequence of statements
1258 -- (e.g. to check that it does not end with a bad return statement).
1259
1260 -- Exception_Label (Node5-Sem)
1261 -- Appears in N_Push_xxx_Label nodes. Points to the entity of the label
1262 -- to be used for transforming the corresponding exception into a goto,
1263 -- or contains Empty, if this exception is not to be transformed. Also
1264 -- appears in N_Exception_Handler nodes, where, if set, it indicates
1265 -- that there may be a local raise for the handler, so that expansion
1266 -- to allow a goto is required (and this field contains the label for
1267 -- this goto). See Exp_Ch11.Expand_Local_Exception_Handlers for details.
1268
1269 -- Expansion_Delayed (Flag11-Sem)
1270 -- Set on aggregates and extension aggregates that need a top-down rather
1271 -- than bottom-up expansion. Typically aggregate expansion happens bottom
1272 -- up. For nested aggregates the expansion is delayed until the enclosing
1273 -- aggregate itself is expanded, e.g. in the context of a declaration. To
1274 -- delay it we set this flag. This is done to avoid creating a temporary
1275 -- for each level of a nested aggregates, and also to prevent the
1276 -- premature generation of constraint checks. This is also a requirement
1277 -- if we want to generate the proper attachment to the internal
1278 -- finalization lists (for record with controlled components). Top down
1279 -- expansion of aggregates is also used for in-place array aggregate
1280 -- assignment or initialization. When the full context is known, the
1281 -- target of the assignment or initialization is used to generate the
1282 -- left-hand side of individual assignment to each sub-component.
1283
1284 -- First_Inlined_Subprogram (Node3-Sem)
1285 -- Present in the N_Compilation_Unit node for the main program. Points
1286 -- to a chain of entities for subprograms that are to be inlined. The
1287 -- Next_Inlined_Subprogram field of these entities is used as a link
1288 -- pointer with Empty marking the end of the list. This field is Empty
1289 -- if there are no inlined subprograms or inlining is not active.
1290
1291 -- First_Named_Actual (Node4-Sem)
1292 -- Present in procedure call statement and function call nodes, and also
1293 -- in Intrinsic nodes. Set during semantic analysis to point to the first
1294 -- named parameter where parameters are ordered by declaration order (as
1295 -- opposed to the actual order in the call which may be different due to
1296 -- named associations). Note: this field points to the explicit actual
1297 -- parameter itself, not the N_Parameter_Association node (its parent).
1298
1299 -- First_Real_Statement (Node2-Sem)
1300 -- Present in N_Handled_Sequence_Of_Statements node. Normally set to
1301 -- Empty. Used only when declarations are moved into the statement part
1302 -- of a construct as a result of wrapping an AT END handler that is
1303 -- required to cover the declarations. In this case, this field is used
1304 -- to remember the location in the statements list of the first real
1305 -- statement, i.e. the statement that used to be first in the statement
1306 -- list before the declarations were prepended.
1307
1308 -- First_Subtype_Link (Node5-Sem)
1309 -- Present in N_Freeze_Entity node for an anonymous base type that is
1310 -- implicitly created by the declaration of a first subtype. It points
1311 -- to the entity for the first subtype.
1312
1313 -- Float_Truncate (Flag11-Sem)
1314 -- A flag present in type conversion nodes. This is used for float to
1315 -- integer conversions where truncation is required rather than rounding.
1316
1317 -- Forwards_OK (Flag5-Sem)
1318 -- A flag present in the N_Assignment_Statement node. It is used only
1319 -- if the type being assigned is an array type, and is set if analysis
1320 -- determines that it is definitely safe to do the copy forwards, i.e.
1321 -- starting at the lowest addressed element. This is the case if either
1322 -- the operands do not overlap, or they may overlap, but if they do,
1323 -- then the left operand is at a lower address than the right operand.
1324 --
1325 -- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
1326 -- means that the front end could not determine that either direction is
1327 -- definitely safe, and a runtime check may be required if the backend
1328 -- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
1329 -- set, it means that the front end can assure no overlap of operands.
1330
1331 -- From_Aspect_Specification (Flag13-Sem)
1332 -- Processing of aspect specifications typically results in insertion in
1333 -- the tree of corresponding pragma or attribute definition clause nodes.
1334 -- These generated nodes have the From_Aspect_Specification flag set to
1335 -- indicate that they came from aspect specifications originally.
1336
1337 -- From_At_End (Flag4-Sem)
1338 -- This flag is set on an N_Raise_Statement node if it corresponds to
1339 -- the reraise statement generated as the last statement of an AT END
1340 -- handler when SJLJ exception handling is active. It is used to stop
1341 -- a bogus violation of restriction (No_Exception_Propagation), bogus
1342 -- because if the restriction is set, the reraise is not generated.
1343
1344 -- From_At_Mod (Flag4-Sem)
1345 -- This flag is set on the attribute definition clause node that is
1346 -- generated by a transformation of an at mod phrase in a record
1347 -- representation clause. This is used to give slightly different (Ada 83
1348 -- compatible) semantics to such a clause, namely it is used to specify a
1349 -- minimum acceptable alignment for the base type and all subtypes. In
1350 -- Ada 95 terms, the actual alignment of the base type and all subtypes
1351 -- must be a multiple of the given value, and the representation clause
1352 -- is considered to be type specific instead of subtype specific.
1353
1354 -- From_Conditional_Expression (Flag1-Sem)
1355 -- This flag is set on if and case statements generated by the expansion
1356 -- of if and case expressions respectively. The flag is used to suppress
1357 -- any finalization of controlled objects found within these statements.
1358
1359 -- From_Default (Flag6-Sem)
1360 -- This flag is set on the subprogram renaming declaration created in an
1361 -- instance for a formal subprogram, when the formal is declared with a
1362 -- box, and there is no explicit actual. If the flag is present, the
1363 -- declaration is treated as an implicit reference to the formal in the
1364 -- ali file.
1365
1366 -- Generalized_Indexing (Node4-Sem)
1367 -- Present in N_Indexed_Component nodes. Set for Indexed_Component nodes
1368 -- that are Ada 2012 container indexing operations. The value of the
1369 -- attribute is a function call (possibly dereferenced) that corresponds
1370 -- to the proper expansion of the source indexing operation. Before
1371 -- expansion, the source node is rewritten as the resolved generalized
1372 -- indexing. In ASIS mode, the expansion does not take place, so that
1373 -- the source is preserved and properly annotated with types.
1374
1375 -- Generic_Parent (Node5-Sem)
1376 -- Generic_Parent is defined on declaration nodes that are instances. The
1377 -- value of Generic_Parent is the generic entity from which the instance
1378 -- is obtained. Generic_Parent is also defined for the renaming
1379 -- declarations and object declarations created for the actuals in an
1380 -- instantiation. The generic parent of such a declaration is the
1381 -- corresponding generic association in the Instantiation node.
1382
1383 -- Generic_Parent_Type (Node4-Sem)
1384 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for the
1385 -- actuals of formal private and derived types. Within the instance, the
1386 -- operations on the actual are those inherited from the parent. For a
1387 -- formal private type, the parent type is the generic type itself. The
1388 -- Generic_Parent_Type is also used in an instance to determine whether a
1389 -- private operation overrides an inherited one.
1390
1391 -- Handler_List_Entry (Node2-Sem)
1392 -- This field is present in N_Object_Declaration nodes. It is set only
1393 -- for the Handler_Record entry generated for an exception in zero cost
1394 -- exception handling mode. It references the corresponding item in the
1395 -- handler list, and is used to delete this entry if the corresponding
1396 -- handler is deleted during optimization. For further details on why
1397 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
1398
1399 -- Has_Dereference_Action (Flag13-Sem)
1400 -- This flag is present in N_Explicit_Dereference nodes. It is set to
1401 -- indicate that the expansion has aready produced a call to primitive
1402 -- Dereference of a System.Checked_Pools.Checked_Pool implementation.
1403 -- Such dereference actions are produced for debugging purposes.
1404
1405 -- Has_Dynamic_Length_Check (Flag10-Sem)
1406 -- This flag is present in all expression nodes. It is set to indicate
1407 -- that one of the routines in unit Checks has generated a length check
1408 -- action which has been inserted at the flagged node. This is used to
1409 -- avoid the generation of duplicate checks.
1410
1411 -- Has_Dynamic_Range_Check (Flag12-Sem)
1412 -- This flag is present in N_Subtype_Declaration nodes and on all
1413 -- expression nodes. It is set to indicate that one of the routines in
1414 -- unit Checks has generated a range check action which has been inserted
1415 -- at the flagged node. This is used to avoid the generation of duplicate
1416 -- checks. Why does this occur on N_Subtype_Declaration nodes, what does
1417 -- it mean in that context???
1418
1419 -- Has_Local_Raise (Flag8-Sem)
1420 -- Present in exception handler nodes. Set if the handler can be entered
1421 -- via a local raise that gets transformed to a goto statement. This will
1422 -- always be set if Local_Raise_Statements is non-empty, but can also be
1423 -- set as a result of generation of N_Raise_xxx nodes, or flags set in
1424 -- nodes requiring generation of back end checks.
1425
1426 -- Has_No_Elaboration_Code (Flag17-Sem)
1427 -- A flag that appears in the N_Compilation_Unit node to indicate whether
1428 -- or not elaboration code is present for this unit. It is initially set
1429 -- true for subprogram specs and bodies and for all generic units and
1430 -- false for non-generic package specs and bodies. Gigi may set the flag
1431 -- in the non-generic package case if it determines that no elaboration
1432 -- code is generated. Note that this flag is not related to the
1433 -- Is_Preelaborated status, there can be preelaborated packages that
1434 -- generate elaboration code, and non-preelaborated packages which do
1435 -- not generate elaboration code.
1436
1437 -- Has_Pragma_Suppress_All (Flag14-Sem)
1438 -- This flag is set in an N_Compilation_Unit node if the Suppress_All
1439 -- pragma appears anywhere in the unit. This accommodates the rather
1440 -- strange placement rules of other compilers (DEC permits it at the
1441 -- end of a unit, and Rational allows it as a program unit pragma). We
1442 -- allow it anywhere at all, and consider it equivalent to a pragma
1443 -- Suppress (All_Checks) appearing at the start of the configuration
1444 -- pragmas for the unit.
1445
1446 -- Has_Private_View (Flag11-Sem)
1447 -- A flag present in generic nodes that have an entity, to indicate that
1448 -- the node has a private type. Used to exchange private and full
1449 -- declarations if the visibility at instantiation is different from the
1450 -- visibility at generic definition.
1451
1452 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
1453 -- A flag present in N_Subprogram_Body and N_Task_Definition nodes to
1454 -- flag the presence of a pragma Relative_Deadline.
1455
1456 -- Has_Self_Reference (Flag13-Sem)
1457 -- Present in N_Aggregate and N_Extension_Aggregate. Indicates that one
1458 -- of the expressions contains an access attribute reference to the
1459 -- enclosing type. Such a self-reference can only appear in default-
1460 -- initialized aggregate for a record type.
1461
1462 -- Has_SP_Choice (Flag15-Sem)
1463 -- Present in all nodes containing a Discrete_Choices field (N_Variant,
1464 -- N_Case_Expression_Alternative, N_Case_Statement_Alternative). Set to
1465 -- True if the Discrete_Choices list has at least one occurrence of a
1466 -- statically predicated subtype.
1467
1468 -- Has_Storage_Size_Pragma (Flag5-Sem)
1469 -- A flag present in an N_Task_Definition node to flag the presence of a
1470 -- Storage_Size pragma.
1471
1472 -- Has_Wide_Character (Flag11-Sem)
1473 -- Present in string literals, set if any wide character (i.e. character
1474 -- code outside the Character range but within Wide_Character range)
1475 -- appears in the string. Used to implement pragma preference rules.
1476
1477 -- Has_Wide_Wide_Character (Flag13-Sem)
1478 -- Present in string literals, set if any wide character (i.e. character
1479 -- code outside the Wide_Character range) appears in the string. Used to
1480 -- implement pragma preference rules.
1481
1482 -- Header_Size_Added (Flag11-Sem)
1483 -- Present in N_Attribute_Reference nodes, set only for attribute
1484 -- Max_Size_In_Storage_Elements. The flag indicates that the size of the
1485 -- hidden list header used by the runtime finalization support has been
1486 -- added to the size of the prefix. The flag also prevents the infinite
1487 -- expansion of the same attribute in the said context.
1488
1489 -- Hidden_By_Use_Clause (Elist4-Sem)
1490 -- An entity list present in use clauses that appear within
1491 -- instantiations. For the resolution of local entities, entities
1492 -- introduced by these use clauses have priority over global ones, and
1493 -- outer entities must be explicitly hidden/restored on exit.
1494
1495 -- Implicit_With (Flag16-Sem)
1496 -- This flag is set in the N_With_Clause node that is implicitly
1497 -- generated for runtime units that are loaded by the expander, and also
1498 -- for package System, if it is loaded implicitly by a use of the
1499 -- 'Address or 'Tag attribute. ???There are other implicit with clauses
1500 -- as well.
1501
1502 -- Implicit_With_From_Instantiation (Flag12-Sem)
1503 -- Set in N_With_Clause nodes from generic instantiations.
1504
1505 -- Import_Interface_Present (Flag16-Sem)
1506 -- This flag is set in an Interface or Import pragma if a matching
1507 -- pragma of the other kind is also present. This is used to avoid
1508 -- generating some unwanted error messages.
1509
1510 -- Includes_Infinities (Flag11-Sem)
1511 -- This flag is present in N_Range nodes. It is set for the range of
1512 -- unconstrained float types defined in Standard, which include not only
1513 -- the given range of values, but also legitimately can include infinite
1514 -- values. This flag is false for any float type for which an explicit
1515 -- range is given by the programmer, even if that range is identical to
1516 -- the range for Float.
1517
1518 -- Incomplete_View (Node2-Sem)
1519 -- Present in full type declarations that are completions of incomplete
1520 -- type declarations. Denotes the corresponding incomplete type
1521 -- declaration. Used to simplify the retrieval of primitive operations
1522 -- that may be declared between the partial and the full view of an
1523 -- untagged type.
1524
1525 -- Inherited_Discriminant (Flag13-Sem)
1526 -- This flag is present in N_Component_Association nodes. It indicates
1527 -- that a given component association in an extension aggregate is the
1528 -- value obtained from a constraint on an ancestor. Used to prevent
1529 -- double expansion when the aggregate has expansion delayed.
1530
1531 -- Instance_Spec (Node5-Sem)
1532 -- This field is present in generic instantiation nodes, and also in
1533 -- formal package declaration nodes (formal package declarations are
1534 -- treated in a manner very similar to package instantiations). It points
1535 -- to the node for the spec of the instance, inserted as part of the
1536 -- semantic processing for instantiations in Sem_Ch12.
1537
1538 -- Is_Accessibility_Actual (Flag13-Sem)
1539 -- Present in N_Parameter_Association nodes. True if the parameter is
1540 -- an extra actual that carries the accessibility level of the actual
1541 -- for an access parameter, in a function that dispatches on result and
1542 -- is called in a dispatching context. Used to prevent a formal/actual
1543 -- mismatch when the call is rewritten as a dispatching call.
1544
1545 -- Is_Analyzed_Pragma (Flag5-Sem)
1546 -- Present in N_Pragma nodes. Set for delayed pragmas that require a two
1547 -- step analysis. The initial step is peformed by routine Analyze_Pragma
1548 -- and verifies the overall legality of the pragma. The second step takes
1549 -- place in the various Analyze_xxx_In_Decl_Part routines which perform
1550 -- full analysis. The flag prevents the reanalysis of a delayed pragma.
1551
1552 -- Is_Expanded_Contract (Flag1-Sem)
1553 -- Present in N_Contract nodes. Set if the contract has already undergone
1554 -- expansion activities.
1555
1556 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1557 -- A flag set in a Block_Statement node to indicate that it is the
1558 -- expansion of an asynchronous entry call. Such a block needs cleanup
1559 -- handler to assure that the call is cancelled.
1560
1561 -- Is_Boolean_Aspect (Flag16-Sem)
1562 -- Present in N_Aspect_Specification node. Set if the aspect is for a
1563 -- boolean aspect (i.e. Aspect_Id is in Boolean_Aspect subtype).
1564
1565 -- Is_Checked (Flag11-Sem)
1566 -- Present in N_Aspect_Specification and N_Pragma nodes. Set for an
1567 -- assertion aspect or pragma, or check pragma for an assertion, that
1568 -- is to be checked at run time. If either Is_Checked or Is_Ignored
1569 -- is set (they cannot both be set), then this means that the status of
1570 -- the pragma has been checked at the appropriate point and should not
1571 -- be further modified (in some cases these flags are copied when a
1572 -- pragma is rewritten).
1573
1574 -- Is_Component_Left_Opnd (Flag13-Sem)
1575 -- Is_Component_Right_Opnd (Flag14-Sem)
1576 -- Present in concatenation nodes, to indicate that the corresponding
1577 -- operand is of the component type of the result. Used in resolving
1578 -- concatenation nodes in instances.
1579
1580 -- Is_Controlling_Actual (Flag16-Sem)
1581 -- This flag is set on an expression that is a controlling argument in
1582 -- a dispatching call. It is off in all other cases. See Sem_Disp for
1583 -- details of its use.
1584
1585 -- Is_Delayed_Aspect (Flag14-Sem)
1586 -- Present in N_Pragma and N_Attribute_Definition_Clause nodes which
1587 -- come from aspect specifications, where the evaluation of the aspect
1588 -- must be delayed to the freeze point. This flag is also set True in
1589 -- the corresponding N_Aspect_Specification node.
1590
1591 -- Is_Disabled (Flag15-Sem)
1592 -- A flag set in an N_Aspect_Specification or N_Pragma node if there was
1593 -- a Check_Policy or Assertion_Policy (or in the case of a Debug_Pragma)
1594 -- a Debug_Policy pragma that resulted in totally disabling the flagged
1595 -- aspect or policy as a result of using the GNAT-defined policy DISABLE.
1596 -- If this flag is set, the aspect or policy is not analyzed for semantic
1597 -- correctness, so any expressions etc will not be marked as analyzed.
1598
1599 -- Is_Dynamic_Coextension (Flag18-Sem)
1600 -- Present in allocator nodes, to indicate that this is an allocator
1601 -- for an access discriminant of a dynamically allocated object. The
1602 -- coextension must be deallocated and finalized at the same time as
1603 -- the enclosing object.
1604
1605 -- Is_Entry_Barrier_Function (Flag8-Sem)
1606 -- This flag is set on N_Subprogram_Declaration and N_Subprogram_Body
1607 -- nodes which emulate the barrier function of a protected entry body.
1608 -- The flag is used when checking for incorrect use of Current_Task.
1609
1610 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
1611 -- This flag is set in an N_Function_Call node to indicate that the extra
1612 -- actuals to support a build-in-place style of call have been added to
1613 -- the call.
1614
1615 -- Is_Finalization_Wrapper (Flag9-Sem);
1616 -- This flag is present in N_Block_Statement nodes. It is set when the
1617 -- block acts as a wrapper of a handled construct which has controlled
1618 -- objects. The wrapper prevents interference between exception handlers
1619 -- and At_End handlers.
1620
1621 -- Is_Generic_Contract_Pragma (Flag2-Sem)
1622 -- This flag is present in N_Pragma nodes. It is set when the pragma is
1623 -- a source construct, applies to a generic unit or its body and denotes
1624 -- one of the following contract-related annotations:
1625 -- Abstract_State
1626 -- Contract_Cases
1627 -- Depends
1628 -- Extensions_Visible
1629 -- Global
1630 -- Initial_Condition
1631 -- Initializes
1632 -- Post
1633 -- Post_Class
1634 -- Postcondition
1635 -- Pre
1636 -- Pre_Class
1637 -- Precondition
1638 -- Refined_Depends
1639 -- Refined_Global
1640 -- Refined_Post
1641 -- Refined_State
1642 -- Test_Case
1643
1644 -- Is_Ghost_Pragma (Flag3-Sem)
1645 -- This flag is present in N_Pragma nodes. It is set when the pragma is
1646 -- either declared within a Ghost construct or it applies to a Ghost
1647 -- construct.
1648
1649 -- Is_Ignored (Flag9-Sem)
1650 -- A flag set in an N_Aspect_Specification or N_Pragma node if there was
1651 -- a Check_Policy or Assertion_Policy (or in the case of a Debug_Pragma)
1652 -- a Debug_Policy pragma that specified a policy of IGNORE, DISABLE, or
1653 -- OFF, for the pragma/aspect. If there was a Policy pragma specifying
1654 -- a Policy of ON or CHECK, then this flag is reset. If no Policy pragma
1655 -- gives a policy for the aspect or pragma, then there are two cases. For
1656 -- an assertion aspect or pragma (one of the assertion kinds allowed in
1657 -- an Assertion_Policy pragma), then Is_Ignored is set if assertions are
1658 -- ignored because of the absence of a -gnata switch. For any other
1659 -- aspects or pragmas, the flag is off. If this flag is set, the
1660 -- aspect/pragma is fully analyzed and checked for other syntactic
1661 -- and semantic errors, but it does not have any semantic effect.
1662
1663 -- Is_In_Discriminant_Check (Flag11-Sem)
1664 -- This flag is present in a selected component, and is used to indicate
1665 -- that the reference occurs within a discriminant check. The
1666 -- significance is that optimizations based on assuming that the
1667 -- discriminant check has a correct value cannot be performed in this
1668 -- case (or the discriminant check may be optimized away).
1669
1670 -- Is_Inherited_Pragma (Flag4-Sem)
1671 -- This flag is set in an N_Pragma node that appears in a N_Contract node
1672 -- to indicate that the pragma has been inherited from a parent context.
1673
1674 -- Is_Machine_Number (Flag11-Sem)
1675 -- This flag is set in an N_Real_Literal node to indicate that the value
1676 -- is a machine number. This avoids some unnecessary cases of converting
1677 -- real literals to machine numbers.
1678
1679 -- Is_Null_Loop (Flag16-Sem)
1680 -- This flag is set in an N_Loop_Statement node if the corresponding loop
1681 -- can be determined to be null at compile time. This is used to remove
1682 -- the loop entirely at expansion time.
1683
1684 -- Is_Overloaded (Flag5-Sem)
1685 -- A flag present in all expression nodes. Used temporarily during
1686 -- overloading determination. The setting of this flag is not relevant
1687 -- once overloading analysis is complete.
1688
1689 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1690 -- A flag present only in N_Op_Expon nodes. It is set when the
1691 -- exponentiation is of the form 2 ** N, where the type of N is an
1692 -- unsigned integral subtype whose size does not exceed the size of
1693 -- Standard_Integer (i.e. a type that can be safely converted to
1694 -- Natural), and the exponentiation appears as the right operand of an
1695 -- integer multiplication or an integer division where the dividend is
1696 -- unsigned. It is also required that overflow checking is off for both
1697 -- the exponentiation and the multiply/divide node. If this set of
1698 -- conditions holds, and the flag is set, then the division or
1699 -- multiplication can be (and is) converted to a shift.
1700
1701 -- Is_Prefixed_Call (Flag17-Sem)
1702 -- This flag is set in a selected component within a generic unit, if
1703 -- it resolves to a prefixed call to a primitive operation. The flag
1704 -- is used to prevent accidental overloadings in an instance, when a
1705 -- primitive operation and a private record component may be homographs.
1706
1707 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1708 -- A flag set in a Subprogram_Body block to indicate that it is the
1709 -- implementation of a protected subprogram. Such a body needs cleanup
1710 -- handler to make sure that the associated protected object is unlocked
1711 -- when the subprogram completes.
1712
1713 -- Is_Qualified_Universal_Literal (Flag4-Sem)
1714 -- Present in N_Qualified_Expression nodes. Set when the qualification is
1715 -- converting a universal literal to a specific type. Such qualifiers aid
1716 -- the resolution of accidental overloading of binary or unary operators
1717 -- which may occur in instances.
1718
1719 -- Is_Static_Coextension (Flag14-Sem)
1720 -- Present in N_Allocator nodes. Set if the allocator is a coextension
1721 -- of an object allocated on the stack rather than the heap.
1722
1723 -- Is_Static_Expression (Flag6-Sem)
1724 -- Indicates that an expression is a static expression according to the
1725 -- rules in (RM 4.9). Note that it is possible for this flag to be set
1726 -- when Raises_Constraint_Error is also set. In practice almost all cases
1727 -- where a static expression is required do not allow an expression which
1728 -- raises Constraint_Error, so almost always, callers should call the
1729 -- Is_Ok_Static_Expression routine instead of testing this flag. See
1730 -- spec of package Sem_Eval for full details on the use of this flag.
1731
1732 -- Is_Subprogram_Descriptor (Flag16-Sem)
1733 -- Present in N_Object_Declaration, and set only for the object
1734 -- declaration generated for a subprogram descriptor in fast exception
1735 -- mode. See Exp_Ch11 for details of use.
1736
1737 -- Is_Task_Allocation_Block (Flag6-Sem)
1738 -- A flag set in a Block_Statement node to indicate that it is the
1739 -- expansion of a task allocator, or the allocator of an object
1740 -- containing tasks. Such a block requires a cleanup handler to call
1741 -- Expunge_Unactivated_Tasks to complete any tasks that have been
1742 -- allocated but not activated when the allocator completes abnormally.
1743
1744 -- Is_Task_Body_Procedure (Flag1-Sem)
1745 -- This flag is set on N_Subprogram_Declaration and N_Subprogram_Body
1746 -- nodes which emulate the body of a task unit.
1747
1748 -- Is_Task_Master (Flag5-Sem)
1749 -- A flag set in a Subprogram_Body, Block_Statement or Task_Body node to
1750 -- indicate that the construct is a task master (i.e. has declared tasks
1751 -- or declares an access to a task type).
1752
1753 -- Itype (Node1-Sem)
1754 -- Used in N_Itype_Reference node to reference an itype for which it is
1755 -- important to ensure that it is defined. See description of this node
1756 -- for further details.
1757
1758 -- Kill_Range_Check (Flag11-Sem)
1759 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
1760 -- result should not be subjected to range checks. This is used for the
1761 -- implementation of Normalize_Scalars.
1762
1763 -- Label_Construct (Node2-Sem)
1764 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
1765 -- N_Block_Statement or N_Loop_Statement node to which the label
1766 -- declaration applies. This attribute is used both in the compiler and
1767 -- in the implementation of ASIS queries. The field is left empty for the
1768 -- special labels generated as part of expanding raise statements with a
1769 -- local exception handler.
1770
1771 -- Library_Unit (Node4-Sem)
1772 -- In a stub node, Library_Unit points to the compilation unit node of
1773 -- the corresponding subunit.
1774 --
1775 -- In a with clause node, Library_Unit points to the spec of the with'ed
1776 -- unit.
1777 --
1778 -- In a compilation unit node, the usage depends on the unit type:
1779 --
1780 -- For a library unit body, Library_Unit points to the compilation unit
1781 -- node of the corresponding spec, unless it's a subprogram body with
1782 -- Acts_As_Spec set, in which case it points to itself.
1783 --
1784 -- For a spec, Library_Unit points to the compilation unit node of the
1785 -- corresponding body, if present. The body will be present if the spec
1786 -- is or contains generics that we needed to instantiate. Similarly, the
1787 -- body will be present if we needed it for inlining purposes. Thus, if
1788 -- we have a spec/body pair, both of which are present, they point to
1789 -- each other via Library_Unit.
1790 --
1791 -- For a subunit, Library_Unit points to the compilation unit node of
1792 -- the parent body.
1793 -- ??? not (always) true, in (at least some, maybe all?) cases it points
1794 -- to the corresponding spec for the parent body.
1795 --
1796 -- Note that this field is not used to hold the parent pointer for child
1797 -- unit (which might in any case need to use it for some other purpose as
1798 -- described above). Instead for a child unit, implicit with's are
1799 -- generated for all parents.
1800
1801 -- Local_Raise_Statements (Elist1)
1802 -- This field is present in exception handler nodes. It is set to
1803 -- No_Elist in the normal case. If there is at least one raise statement
1804 -- which can potentially be handled as a local raise, then this field
1805 -- points to a list of raise nodes, which are calls to a routine to raise
1806 -- an exception. These are raise nodes which can be optimized into gotos
1807 -- if the handler turns out to meet the conditions which permit this
1808 -- transformation. Note that this does NOT include instances of the
1809 -- N_Raise_xxx_Error nodes since the transformation of these nodes is
1810 -- handled by the back end (using the N_Push/N_Pop mechanism).
1811
1812 -- Loop_Actions (List2-Sem)
1813 -- A list present in Component_Association nodes in array aggregates.
1814 -- Used to collect actions that must be executed within the loop because
1815 -- they may need to be evaluated anew each time through.
1816
1817 -- Limited_View_Installed (Flag18-Sem)
1818 -- Present in With_Clauses and in package specifications. If set on
1819 -- with_clause, it indicates that this clause has created the current
1820 -- limited view of the designated package. On a package specification, it
1821 -- indicates that the limited view has already been created because the
1822 -- package is mentioned in a limited_with_clause in the closure of the
1823 -- unit being compiled.
1824
1825 -- Local_Raise_Not_OK (Flag7-Sem)
1826 -- Present in N_Exception_Handler nodes. Set if the handler contains
1827 -- a construct (reraise statement, or call to subprogram in package
1828 -- GNAT.Current_Exception) that makes the handler unsuitable as a target
1829 -- for a local raise (one that could otherwise be converted to a goto).
1830
1831 -- Must_Be_Byte_Aligned (Flag14-Sem)
1832 -- This flag is present in N_Attribute_Reference nodes. It can be set
1833 -- only for the Address and Unrestricted_Access attributes. If set it
1834 -- means that the object for which the address/access is given must be on
1835 -- a byte (more accurately a storage unit) boundary. If necessary, a copy
1836 -- of the object is to be made before taking the address (this copy is in
1837 -- the current scope on the stack frame). This is used for certain cases
1838 -- of code generated by the expander that passes parameters by address.
1839 --
1840 -- The reason the copy is not made by the front end is that the back end
1841 -- has more information about type layout and may be able to (but is not
1842 -- guaranteed to) prevent making unnecessary copies.
1843
1844 -- Must_Not_Freeze (Flag8-Sem)
1845 -- A flag present in all expression nodes. Normally expressions cause
1846 -- freezing as described in the RM. If this flag is set, then this is
1847 -- inhibited. This is used by the analyzer and expander to label nodes
1848 -- that are created by semantic analysis or expansion and which must not
1849 -- cause freezing even though they normally would. This flag is also
1850 -- present in an N_Subtype_Indication node, since we also use these in
1851 -- calls to Freeze_Expression.
1852
1853 -- Next_Entity (Node2-Sem)
1854 -- Present in defining identifiers, defining character literals and
1855 -- defining operator symbols (i.e. in all entities). The entities of a
1856 -- scope are chained, and this field is used as the forward pointer for
1857 -- this list. See Einfo for further details.
1858
1859 -- Next_Exit_Statement (Node3-Sem)
1860 -- Present in N_Exit_Statement nodes. The exit statements for a loop are
1861 -- chained (in reverse order of appearance) from the First_Exit_Statement
1862 -- field of the E_Loop entity for the loop. Next_Exit_Statement points to
1863 -- the next entry on this chain (Empty = end of list).
1864
1865 -- Next_Implicit_With (Node3-Sem)
1866 -- Present in N_With_Clause. Part of a chain of with_clauses generated
1867 -- in rtsfind to indicate implicit dependencies on predefined units. Used
1868 -- to prevent multiple with_clauses for the same unit in a given context.
1869 -- A postorder traversal of the tree whose nodes are units and whose
1870 -- links are with_clauses defines the order in which CodePeer must
1871 -- examine a compiled unit and its full context. This ordering ensures
1872 -- that any subprogram call is examined after the subprogram declaration
1873 -- has been seen.
1874
1875 -- Next_Named_Actual (Node4-Sem)
1876 -- Present in parameter association nodes. Set during semantic analysis
1877 -- to point to the next named parameter, where parameters are ordered by
1878 -- declaration order (as opposed to the actual order in the call, which
1879 -- may be different due to named associations). Not that this field
1880 -- points to the explicit actual parameter itself, not to the
1881 -- N_Parameter_Association node (its parent).
1882
1883 -- Next_Pragma (Node1-Sem)
1884 -- Present in N_Pragma nodes. Used to create a linked list of pragma
1885 -- nodes. Currently used for two purposes:
1886 --
1887 -- Create a list of linked Check_Policy pragmas. The head of this list
1888 -- is stored in Opt.Check_Policy_List (which has further details).
1889 --
1890 -- Used by processing for Pre/Postcondition pragmas to store a list of
1891 -- pragmas associated with the spec of a subprogram (see Sem_Prag for
1892 -- details).
1893 --
1894 -- Used by processing for pragma SPARK_Mode to store multiple pragmas
1895 -- the apply to the same construct. These are visible/private mode for
1896 -- a package spec and declarative/statement mode for package body.
1897
1898 -- Next_Rep_Item (Node5-Sem)
1899 -- Present in pragma nodes, attribute definition nodes, enumeration rep
1900 -- clauses, record rep clauses, aspect specification nodes. Used to link
1901 -- representation items that apply to an entity. See full description of
1902 -- First_Rep_Item field in Einfo for further details.
1903
1904 -- Next_Use_Clause (Node3-Sem)
1905 -- While use clauses are active during semantic processing, they are
1906 -- chained from the scope stack entry, using Next_Use_Clause as a link
1907 -- pointer, with Empty marking the end of the list. The head pointer is
1908 -- in the scope stack entry (First_Use_Clause). At the end of semantic
1909 -- processing (i.e. when Gigi sees the tree, the contents of this field
1910 -- is undefined and should not be read).
1911
1912 -- No_Ctrl_Actions (Flag7-Sem)
1913 -- Present in N_Assignment_Statement to indicate that no Finalize nor
1914 -- Adjust should take place on this assignment even though the RHS is
1915 -- controlled. Also indicates that the primitive _assign should not be
1916 -- used for a tagged assignment. This is used in init procs and aggregate
1917 -- expansions where the generated assignments are initializations, not
1918 -- real assignments.
1919
1920 -- No_Elaboration_Check (Flag14-Sem)
1921 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
1922 -- that no elaboration check is needed on the call, because it appears in
1923 -- the context of a local Suppress pragma. This is used on calls within
1924 -- task bodies, where the actual elaboration checks are applied after
1925 -- analysis, when the local scope stack is not present.
1926
1927 -- No_Entities_Ref_In_Spec (Flag8-Sem)
1928 -- Present in N_With_Clause nodes. Set if the with clause is on the
1929 -- package or subprogram spec where the main unit is the corresponding
1930 -- body, and no entities of the with'ed unit are referenced by the spec
1931 -- (an entity may still be referenced in the body, so this flag is used
1932 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
1933 -- full details).
1934
1935 -- No_Initialization (Flag13-Sem)
1936 -- Present in N_Object_Declaration and N_Allocator to indicate that the
1937 -- object must not be initialized (by Initialize or call to an init
1938 -- proc). This is needed for controlled aggregates. When the Object
1939 -- declaration has an expression, this flag means that this expression
1940 -- should not be taken into account (needed for in place initialization
1941 -- with aggregates, and for object with an address clause, which are
1942 -- initialized with an assignment at freeze time).
1943
1944 -- No_Minimize_Eliminate (Flag17-Sem)
1945 -- This flag is present in membership operator nodes (N_In/N_Not_In).
1946 -- It is used to indicate that processing for extended overflow checking
1947 -- modes is not required (this is used to prevent infinite recursion).
1948
1949 -- No_Side_Effect_Removal (Flag1-Sem)
1950 -- Present in N_Function_Call nodes. Set when a function call does not
1951 -- require side effect removal. This attribute suppresses the generation
1952 -- of a temporary to capture the result of the function which eventually
1953 -- replaces the function call.
1954
1955 -- No_Truncation (Flag17-Sem)
1956 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
1957 -- only if the RM_Size of the source is greater than the RM_Size of the
1958 -- target for scalar operands. Normally in such a case we truncate some
1959 -- higher order bits of the source, and then sign/zero extend the result
1960 -- to form the output value. But if this flag is set, then we do not do
1961 -- any truncation, so for example, if an 8 bit input is converted to 5
1962 -- bit result which is in fact stored in 8 bits, then the high order
1963 -- three bits of the target result will be copied from the source. This
1964 -- is used for properly setting out of range values for use by pragmas
1965 -- Initialize_Scalars and Normalize_Scalars.
1966
1967 -- Non_Aliased_Prefix (Flag18-Sem)
1968 -- Present in N_Attribute_Reference nodes. Set only for the case of an
1969 -- Unrestricted_Access reference whose prefix is non-aliased, which is
1970 -- the case that is permitted for Unrestricted_Access except when the
1971 -- expected type is a thin pointer to unconstrained array. This flag is
1972 -- to assist in detecting this illegal use of Unrestricted_Access.
1973
1974 -- Null_Excluding_Subtype (Flag16)
1975 -- Present in N_Access_To_Object_Definition. Indicates that the subtype
1976 -- indication carries a null-exclusion indicator, which is distinct from
1977 -- the null-exclusion indicator that may precede the access keyword.
1978
1979 -- Original_Discriminant (Node2-Sem)
1980 -- Present in identifiers. Used in references to discriminants that
1981 -- appear in generic units. Because the names of the discriminants may be
1982 -- different in an instance, we use this field to recover the position of
1983 -- the discriminant in the original type, and replace it with the
1984 -- discriminant at the same position in the instantiated type.
1985
1986 -- Original_Entity (Node2-Sem)
1987 -- Present in numeric literals. Used to denote the named number that has
1988 -- been constant-folded into the given literal. If literal is from
1989 -- source, or the result of some other constant-folding operation, then
1990 -- Original_Entity is empty. This field is needed to handle properly
1991 -- named numbers in generic units, where the Associated_Node field
1992 -- interferes with the Entity field, making it impossible to preserve the
1993 -- original entity at the point of instantiation (ASIS problem).
1994
1995 -- Others_Discrete_Choices (List1-Sem)
1996 -- When a case statement or variant is analyzed, the semantic checks
1997 -- determine the actual list of choices that correspond to an others
1998 -- choice. This list is materialized for later use by the expander and
1999 -- the Others_Discrete_Choices field of an N_Others_Choice node points to
2000 -- this materialized list of choices, which is in standard format for a
2001 -- list of discrete choices, except that of course it cannot contain an
2002 -- N_Others_Choice entry.
2003
2004 -- Parent_Spec (Node4-Sem)
2005 -- For a library unit that is a child unit spec (package or subprogram
2006 -- declaration, generic declaration or instantiation, or library level
2007 -- rename, this field points to the compilation unit node for the parent
2008 -- package specification. This field is Empty for library bodies (the
2009 -- parent spec in this case can be found from the corresponding spec).
2010
2011 -- Premature_Use (Node5-Sem)
2012 -- Present in N_Incomplete_Type_Declaration node. Used for improved
2013 -- error diagnostics: if there is a premature usage of an incomplete
2014 -- type, a subsequently generated error message indicates the position
2015 -- of its full declaration.
2016
2017 -- Present_Expr (Uint3-Sem)
2018 -- Present in an N_Variant node. This has a meaningful value only after
2019 -- Gigi has back annotated the tree with representation information. At
2020 -- this point, it contains a reference to a gcc expression that depends
2021 -- on the values of one or more discriminants. Give a set of discriminant
2022 -- values, this expression evaluates to False (zero) if variant is not
2023 -- present, and True (non-zero) if it is present. See unit Repinfo for
2024 -- further details on gigi back annotation. This field is used during
2025 -- ASIS processing (data decomposition annex) to determine if a field is
2026 -- present or not.
2027
2028 -- Print_In_Hex (Flag13-Sem)
2029 -- Set on an N_Integer_Literal node to indicate that the value should be
2030 -- printed in hexadecimal in the sprint listing. Has no effect on
2031 -- legality or semantics of program, only on the displayed output. This
2032 -- is used to clarify output from the packed array cases.
2033
2034 -- Procedure_To_Call (Node2-Sem)
2035 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
2036 -- and N_Extended_Return_Statement nodes. References the entity for the
2037 -- declaration of the procedure to be called to accomplish the required
2038 -- operation (i.e. for the Allocate procedure in the case of N_Allocator
2039 -- and N_Simple_Return_Statement and N_Extended_Return_Statement (for
2040 -- allocating the return value), and for the Deallocate procedure in the
2041 -- case of N_Free_Statement.
2042
2043 -- Raises_Constraint_Error (Flag7-Sem)
2044 -- Set on an expression whose evaluation will definitely fail constraint
2045 -- error check. In the case of static expressions, this flag must be set
2046 -- accurately (and if it is set, the expression is typically illegal
2047 -- unless it appears as a non-elaborated branch of a short-circuit form).
2048 -- For a non-static expression, this flag may be set whenever an
2049 -- expression (e.g. an aggregate) is known to raise constraint error. If
2050 -- set, the expression definitely will raise CE if elaborated at runtime.
2051 -- If not set, the expression may or may not raise CE. In other words, on
2052 -- static expressions, the flag is set accurately, on non-static
2053 -- expressions it is set conservatively.
2054
2055 -- Redundant_Use (Flag13-Sem)
2056 -- Present in nodes that can appear as an operand in a use clause or use
2057 -- type clause (identifiers, expanded names, attribute references). Set
2058 -- to indicate that a use is redundant (and therefore need not be undone
2059 -- on scope exit).
2060
2061 -- Renaming_Exception (Node2-Sem)
2062 -- Present in N_Exception_Declaration node. Used to point back to the
2063 -- exception renaming for an exception declared within a subprogram.
2064 -- What happens is that an exception declared in a subprogram is moved
2065 -- to the library level with a unique name, and the original exception
2066 -- becomes a renaming. This link from the library level exception to the
2067 -- renaming declaration allows registering of the proper exception name.
2068
2069 -- Return_Statement_Entity (Node5-Sem)
2070 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement.
2071 -- Points to an E_Return_Statement representing the return statement.
2072
2073 -- Return_Object_Declarations (List3)
2074 -- Present in N_Extended_Return_Statement. Points to a list initially
2075 -- containing a single N_Object_Declaration representing the return
2076 -- object. We use a list (instead of just a pointer to the object decl)
2077 -- because Analyze wants to insert extra actions on this list.
2078
2079 -- Rounded_Result (Flag18-Sem)
2080 -- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
2081 -- Used in the fixed-point cases to indicate that the result must be
2082 -- rounded as a result of the use of the 'Round attribute. Also used for
2083 -- integer N_Op_Divide nodes to indicate that the result should be
2084 -- rounded to the nearest integer (breaking ties away from zero), rather
2085 -- than truncated towards zero as usual. These rounded integer operations
2086 -- are the result of expansion of rounded fixed-point divide, conversion
2087 -- and multiplication operations.
2088
2089 -- SCIL_Entity (Node4-Sem)
2090 -- Present in SCIL nodes. References the specific tagged type associated
2091 -- with the SCIL node (for an N_SCIL_Dispatching_Call node, this is
2092 -- the controlling type of the call; for an N_SCIL_Membership_Test node
2093 -- generated as part of testing membership in T'Class, this is T; for an
2094 -- N_SCIL_Dispatch_Table_Tag_Init node, this is the type being declared).
2095
2096 -- SCIL_Controlling_Tag (Node5-Sem)
2097 -- Present in N_SCIL_Dispatching_Call nodes. References the controlling
2098 -- tag of a dispatching call. This is usually an N_Selected_Component
2099 -- node (for a _tag component), but may be an N_Object_Declaration or
2100 -- N_Parameter_Specification node in some cases (e.g., for a call to
2101 -- a classwide streaming operation or a call to an instance of
2102 -- Ada.Tags.Generic_Dispatching_Constructor).
2103
2104 -- SCIL_Tag_Value (Node5-Sem)
2105 -- Present in N_SCIL_Membership_Test nodes. Used to reference the tag
2106 -- of the value that is being tested.
2107
2108 -- SCIL_Target_Prim (Node2-Sem)
2109 -- Present in N_SCIL_Dispatching_Call nodes. References the primitive
2110 -- operation named (statically) in a dispatching call.
2111
2112 -- Scope (Node3-Sem)
2113 -- Present in defining identifiers, defining character literals and
2114 -- defining operator symbols (i.e. in all entities). The entities of a
2115 -- scope all use this field to reference the corresponding scope entity.
2116 -- See Einfo for further details.
2117
2118 -- Shift_Count_OK (Flag4-Sem)
2119 -- A flag present in shift nodes to indicate that the shift count is
2120 -- known to be in range, i.e. is in the range from zero to word length
2121 -- minus one. If this flag is not set, then the shift count may be
2122 -- outside this range, i.e. larger than the word length, and the code
2123 -- must ensure that such shift counts give the appropriate result.
2124
2125 -- Source_Type (Node1-Sem)
2126 -- Used in an N_Validate_Unchecked_Conversion node to point to the
2127 -- source type entity for the unchecked conversion instantiation
2128 -- which gigi must do size validation for.
2129
2130 -- Split_PPC (Flag17)
2131 -- When a Pre or Post aspect specification is processed, it is broken
2132 -- into AND THEN sections. The left most section has Split_PPC set to
2133 -- False, indicating that it is the original specification (e.g. for
2134 -- posting errors). For other sections, Split_PPC is set to True.
2135 -- This flag is set in both the N_Aspect_Specification node itself,
2136 -- and in the pragma which is generated from this node.
2137
2138 -- Storage_Pool (Node1-Sem)
2139 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
2140 -- and N_Extended_Return_Statement nodes. References the entity for the
2141 -- storage pool to be used for the allocate or free call or for the
2142 -- allocation of the returned value from function. Empty indicates that
2143 -- the global default pool is to be used. Note that in the case
2144 -- of a return statement, this field is set only if the function returns
2145 -- value of a type whose size is not known at compile time on the
2146 -- secondary stack.
2147
2148 -- Suppress_Assignment_Checks (Flag18-Sem)
2149 -- Used in generated N_Assignment_Statement nodes to suppress predicate
2150 -- and range checks in cases where the generated code knows that the
2151 -- value being assigned is in range and satisfies any predicate. Also
2152 -- can be set in N_Object_Declaration nodes, to similarly suppress any
2153 -- checks on the initializing value. In assignment statements it also
2154 -- suppresses access checks in the generated code for out- and in-out
2155 -- parameters in entry calls.
2156
2157 -- Suppress_Loop_Warnings (Flag17-Sem)
2158 -- Used in N_Loop_Statement node to indicate that warnings within the
2159 -- body of the loop should be suppressed. This is set when the range
2160 -- of a FOR loop is known to be null, or is probably null (loop would
2161 -- only execute if invalid values are present).
2162
2163 -- Target_Type (Node2-Sem)
2164 -- Used in an N_Validate_Unchecked_Conversion node to point to the target
2165 -- type entity for the unchecked conversion instantiation which gigi must
2166 -- do size validation for.
2167
2168 -- Then_Actions (List3-Sem)
2169 -- This field is present in if expression nodes. During code expansion
2170 -- we use the Insert_Actions procedure (in Exp_Util) to insert actions
2171 -- at an appropriate place in the tree to get elaborated at the right
2172 -- time. For if expressions, we have to be sure that the actions for
2173 -- for the Then branch are only elaborated if the condition is True.
2174 -- The Then_Actions field is used as a temporary parking place for
2175 -- these actions. The final tree is always rewritten to eliminate the
2176 -- need for this field, so in the tree passed to Gigi, this field is
2177 -- always set to No_List.
2178
2179 -- Treat_Fixed_As_Integer (Flag14-Sem)
2180 -- This flag appears in operator nodes for divide, multiply, mod and rem
2181 -- on fixed-point operands. It indicates that the operands are to be
2182 -- treated as integer values, ignoring small values. This flag is only
2183 -- set as a result of expansion of fixed-point operations. Typically a
2184 -- fixed-point multiplication in the source generates subsidiary
2185 -- multiplication and division operations that work with the underlying
2186 -- integer values and have this flag set. Note that this flag is not
2187 -- needed on other arithmetic operations (add, neg, subtract etc.) since
2188 -- in these cases it is always the case that fixed is treated as integer.
2189 -- The Etype field MUST be set if this flag is set. The analyzer knows to
2190 -- leave such nodes alone, and whoever makes them must set the correct
2191 -- Etype value.
2192
2193 -- TSS_Elist (Elist3-Sem)
2194 -- Present in N_Freeze_Entity nodes. Holds an element list containing
2195 -- entries for each TSS (type support subprogram) associated with the
2196 -- frozen type. The elements of the list are the entities for the
2197 -- subprograms (see package Exp_TSS for further details). Set to No_Elist
2198 -- if there are no type support subprograms for the type or if the freeze
2199 -- node is not for a type.
2200
2201 -- Uneval_Old_Accept (Flag7-Sem)
2202 -- Present in N_Pragma nodes. Set True if Opt.Uneval_Old is set to 'A'
2203 -- (accept) at the point where the pragma is encountered (including the
2204 -- case of a pragma generated from an aspect specification). It is this
2205 -- setting that is relevant, rather than the setting at the point where
2206 -- a contract is finally analyzed after the delay till the freeze point.
2207
2208 -- Uneval_Old_Warn (Flag18-Sem)
2209 -- Present in N_Pragma nodes. Set True if Opt.Uneval_Old is set to 'W'
2210 -- (warn) at the point where the pragma is encountered (including the
2211 -- case of a pragma generated from an aspect specification). It is this
2212 -- setting that is relevant, rather than the setting at the point where
2213 -- a contract is finally analyzed after the delay till the freeze point.
2214
2215 -- Unreferenced_In_Spec (Flag7-Sem)
2216 -- Present in N_With_Clause nodes. Set if the with clause is on the
2217 -- package or subprogram spec where the main unit is the corresponding
2218 -- body, and is not referenced by the spec (it may still be referenced by
2219 -- the body, so this flag is used to generate the proper message (see
2220 -- Sem_Util.Check_Unused_Withs for details)
2221
2222 -- Uninitialized_Variable (Node3-Sem)
2223 -- Present in N_Formal_Private_Type_Definition and in N_Private_
2224 -- Extension_Declarations. Indicates that a variable in a generic unit
2225 -- whose type is a formal private or derived type is read without being
2226 -- initialized. Used to warn if the corresponding actual type is not
2227 -- a fully initialized type.
2228
2229 -- Used_Operations (Elist5-Sem)
2230 -- Present in N_Use_Type_Clause nodes. Holds the list of operations that
2231 -- are made potentially use-visible by the clause. Simplifies processing
2232 -- on exit from the scope of the use_type_clause, in particular in the
2233 -- case of Use_All_Type, when those operations several scopes.
2234
2235 -- Was_Expression_Function (Flag18-Sem)
2236 -- Present in N_Subprogram_Body. True if the original source had an
2237 -- N_Expression_Function, which was converted to the N_Subprogram_Body
2238 -- by Analyze_Expression_Function. This is needed by ASIS to correctly
2239 -- recreate the expression function (for the instance body) when the
2240 -- completion of a generic function declaration is an expression
2241 -- function.
2242
2243 -- Was_Originally_Stub (Flag13-Sem)
2244 -- This flag is set in the node for a proper body that replaces stub.
2245 -- During the analysis procedure, stubs in some situations get rewritten
2246 -- by the corresponding bodies, and we set this flag to remember that
2247 -- this happened. Note that it is not good enough to rely on the use of
2248 -- Original_Node here because of the case of nested instantiations where
2249 -- the substituted node can be copied.
2250
2251 -- Withed_Body (Node1-Sem)
2252 -- Present in N_With_Clause nodes. Set if the unit in whose context
2253 -- the with_clause appears instantiates a generic contained in the
2254 -- library unit of the with_clause and as a result loads its body.
2255 -- Used for a more precise unit traversal for CodePeer.
2256
2257 --------------------------------------------------
2258 -- Note on Use of End_Label and End_Span Fields --
2259 --------------------------------------------------
2260
2261 -- Several constructs have end lines:
2262
2263 -- Loop Statement end loop [loop_IDENTIFIER];
2264 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
2265 -- Task Definition end [task_IDENTIFIER]
2266 -- Protected Definition end [protected_IDENTIFIER]
2267 -- Protected Body end [protected_IDENTIFIER]
2268
2269 -- Block Statement end [block_IDENTIFIER];
2270 -- Subprogram Body end [DESIGNATOR];
2271 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
2272 -- Task Body end [task_IDENTIFIER];
2273 -- Accept Statement end [entry_IDENTIFIER]];
2274 -- Entry Body end [entry_IDENTIFIER];
2275
2276 -- If Statement end if;
2277 -- Case Statement end case;
2278
2279 -- Record Definition end record;
2280 -- Enumeration Definition );
2281
2282 -- The End_Label and End_Span fields are used to mark the locations of
2283 -- these lines, and also keep track of the label in the case where a label
2284 -- is present.
2285
2286 -- For the first group above, the End_Label field of the corresponding node
2287 -- is used to point to the label identifier. In the case where there is no
2288 -- label in the source, the parser supplies a dummy identifier (with
2289 -- Comes_From_Source set to False), and the Sloc of this dummy identifier
2290 -- marks the location of the token following the END token.
2291
2292 -- For the second group, the use of End_Label is similar, but the End_Label
2293 -- is found in the N_Handled_Sequence_Of_Statements node. This is done
2294 -- simply because in some cases there is no room in the parent node.
2295
2296 -- For the third group, there is never any label, and instead of using
2297 -- End_Label, we use the End_Span field which gives the location of the
2298 -- token following END, relative to the starting Sloc of the construct,
2299 -- i.e. add Sloc (Node) + End_Span (Node) to get the Sloc of the IF or CASE
2300 -- following the End_Label.
2301
2302 -- The record definition case is handled specially, we treat it as though
2303 -- it required an optional label which is never present, and so the parser
2304 -- always builds a dummy identifier with Comes From Source set False. The
2305 -- reason we do this, rather than using End_Span in this case, is that we
2306 -- want to generate a cross-ref entry for the end of a record, since it
2307 -- represents a scope for name declaration purposes.
2308
2309 -- The enumeration definition case is handled in an exactly similar manner,
2310 -- building a dummy identifier to get a cross-reference.
2311
2312 -- Note: the reason we store the difference as a Uint, instead of storing
2313 -- the Source_Ptr value directly, is that Source_Ptr values cannot be
2314 -- distinguished from other types of values, and we count on all general
2315 -- use fields being self describing. To make things easier for clients,
2316 -- note that we provide function End_Location, and procedure
2317 -- Set_End_Location to allow access to the logical value (which is the
2318 -- Source_Ptr value for the end token).
2319
2320 ---------------------
2321 -- Syntactic Nodes --
2322 ---------------------
2323
2324 ---------------------
2325 -- 2.3 Identifier --
2326 ---------------------
2327
2328 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
2329 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
2330
2331 -- An IDENTIFIER shall not be a reserved word
2332
2333 -- In the Ada grammar identifiers are the bottom level tokens which have
2334 -- very few semantics. Actual program identifiers are direct names. If
2335 -- we were being 100% honest with the grammar, then we would have a node
2336 -- called N_Direct_Name which would point to an identifier. However,
2337 -- that's too many extra nodes, so we just use the N_Identifier node
2338 -- directly as a direct name, and it contains the expression fields and
2339 -- Entity field that correspond to its use as a direct name. In those
2340 -- few cases where identifiers appear in contexts where they are not
2341 -- direct names (pragmas, pragma argument associations, attribute
2342 -- references and attribute definition clauses), the Chars field of the
2343 -- node contains the Name_Id for the identifier name.
2344
2345 -- Note: in GNAT, a reserved word can be treated as an identifier in two
2346 -- cases. First, an incorrect use of a reserved word as an identifier is
2347 -- diagnosed and then treated as a normal identifier. Second, an
2348 -- attribute designator of the form of a reserved word (access, delta,
2349 -- digits, range) is treated as an identifier.
2350
2351 -- Note: The set of letters that is permitted in an identifier depends
2352 -- on the character set in use. See package Csets for full details.
2353
2354 -- N_Identifier
2355 -- Sloc points to identifier
2356 -- Chars (Name1) contains the Name_Id for the identifier
2357 -- Entity (Node4-Sem)
2358 -- Associated_Node (Node4-Sem)
2359 -- Original_Discriminant (Node2-Sem)
2360 -- Redundant_Use (Flag13-Sem)
2361 -- Atomic_Sync_Required (Flag14-Sem)
2362 -- Has_Private_View (Flag11-Sem) (set in generic units)
2363 -- plus fields for expression
2364
2365 --------------------------
2366 -- 2.4 Numeric Literal --
2367 --------------------------
2368
2369 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
2370
2371 ----------------------------
2372 -- 2.4.1 Decimal Literal --
2373 ----------------------------
2374
2375 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
2376
2377 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
2378
2379 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
2380
2381 -- Decimal literals appear in the tree as either integer literal nodes
2382 -- or real literal nodes, depending on whether a period is present.
2383
2384 -- Note: literal nodes appear as a result of direct use of literals
2385 -- in the source program, and also as the result of evaluating
2386 -- expressions at compile time. In the latter case, it is possible
2387 -- to construct real literals that have no syntactic representation
2388 -- using the standard literal format. Such literals are listed by
2389 -- Sprint using the notation [numerator / denominator].
2390
2391 -- Note: the value of an integer literal node created by the front end
2392 -- is never outside the range of values of the base type. However, it
2393 -- can be the case that the created value is outside the range of the
2394 -- particular subtype. This happens in the case of integer overflows
2395 -- with checks suppressed.
2396
2397 -- N_Integer_Literal
2398 -- Sloc points to literal
2399 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
2400 -- has been constant-folded into its literal value.
2401 -- Intval (Uint3) contains integer value of literal
2402 -- plus fields for expression
2403 -- Print_In_Hex (Flag13-Sem)
2404
2405 -- N_Real_Literal
2406 -- Sloc points to literal
2407 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
2408 -- has been constant-folded into its literal value.
2409 -- Realval (Ureal3) contains real value of literal
2410 -- Corresponding_Integer_Value (Uint4-Sem)
2411 -- Is_Machine_Number (Flag11-Sem)
2412 -- plus fields for expression
2413
2414 --------------------------
2415 -- 2.4.2 Based Literal --
2416 --------------------------
2417
2418 -- BASED_LITERAL ::=
2419 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
2420
2421 -- BASE ::= NUMERAL
2422
2423 -- BASED_NUMERAL ::=
2424 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
2425
2426 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
2427
2428 -- Based literals appear in the tree as either integer literal nodes
2429 -- or real literal nodes, depending on whether a period is present.
2430
2431 ----------------------------
2432 -- 2.5 Character Literal --
2433 ----------------------------
2434
2435 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
2436
2437 -- N_Character_Literal
2438 -- Sloc points to literal
2439 -- Chars (Name1) contains the Name_Id for the identifier
2440 -- Char_Literal_Value (Uint2) contains the literal value
2441 -- Entity (Node4-Sem)
2442 -- Associated_Node (Node4-Sem)
2443 -- Has_Private_View (Flag11-Sem) set in generic units.
2444 -- plus fields for expression
2445
2446 -- Note: the Entity field will be missing (set to Empty) for character
2447 -- literals whose type is Standard.Wide_Character or Standard.Character
2448 -- or a type derived from one of these two. In this case the character
2449 -- literal stands for its own coding. The reason we take this irregular
2450 -- short cut is to avoid the need to build lots of junk defining
2451 -- character literal nodes.
2452
2453 -------------------------
2454 -- 2.6 String Literal --
2455 -------------------------
2456
2457 -- STRING LITERAL ::= "{STRING_ELEMENT}"
2458
2459 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
2460 -- single GRAPHIC_CHARACTER other than a quotation mark.
2461 --
2462 -- Is_Folded_In_Parser is True if the parser created this literal by
2463 -- folding a sequence of "&" operators. For example, if the source code
2464 -- says "aaa" & "bbb" & "ccc", and this produces "aaabbbccc", the flag
2465 -- is set. This flag is needed because the parser doesn't know about
2466 -- visibility, so the folded result might be wrong, and semantic
2467 -- analysis needs to check for that.
2468
2469 -- N_String_Literal
2470 -- Sloc points to literal
2471 -- Strval (Str3) contains Id of string value
2472 -- Has_Wide_Character (Flag11-Sem)
2473 -- Has_Wide_Wide_Character (Flag13-Sem)
2474 -- Is_Folded_In_Parser (Flag4)
2475 -- plus fields for expression
2476
2477 ------------------
2478 -- 2.7 Comment --
2479 ------------------
2480
2481 -- A COMMENT starts with two adjacent hyphens and extends up to the
2482 -- end of the line. A COMMENT may appear on any line of a program.
2483
2484 -- Comments are skipped by the scanner and do not appear in the tree.
2485 -- It is possible to reconstruct the position of comments with respect
2486 -- to the elements of the tree by using the source position (Sloc)
2487 -- pointers that appear in every tree node.
2488
2489 -----------------
2490 -- 2.8 Pragma --
2491 -----------------
2492
2493 -- PRAGMA ::= pragma IDENTIFIER
2494 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
2495
2496 -- Note that a pragma may appear in the tree anywhere a declaration
2497 -- or a statement may appear, as well as in some other situations
2498 -- which are explicitly documented.
2499
2500 -- N_Pragma
2501 -- Sloc points to PRAGMA
2502 -- Next_Pragma (Node1-Sem)
2503 -- Pragma_Argument_Associations (List2) (set to No_List if none)
2504 -- Corresponding_Aspect (Node3-Sem) (set to Empty if not present)
2505 -- Pragma_Identifier (Node4)
2506 -- Next_Rep_Item (Node5-Sem)
2507 -- Class_Present (Flag6) set if from Aspect with 'Class
2508 -- From_Aspect_Specification (Flag13-Sem)
2509 -- Import_Interface_Present (Flag16-Sem)
2510 -- Is_Analyzed_Pragma (Flag5-Sem)
2511 -- Is_Checked (Flag11-Sem)
2512 -- Is_Delayed_Aspect (Flag14-Sem)
2513 -- Is_Disabled (Flag15-Sem)
2514 -- Is_Generic_Contract_Pragma (Flag2-Sem)
2515 -- Is_Ghost_Pragma (Flag3-Sem)
2516 -- Is_Ignored (Flag9-Sem)
2517 -- Is_Inherited_Pragma (Flag4-Sem)
2518 -- Split_PPC (Flag17) set if corresponding aspect had Split_PPC set
2519 -- Uneval_Old_Accept (Flag7-Sem)
2520 -- Uneval_Old_Warn (Flag18-Sem)
2521
2522 -- Note: we should have a section on what pragmas are passed on to
2523 -- the back end to be processed. This section should note that pragma
2524 -- Psect_Object is always converted to Common_Object, but there are
2525 -- undoubtedly many other similar notes required ???
2526
2527 -- Note: a utility function Pragma_Name may be applied to pragma nodes
2528 -- to conveniently obtain the Chars field of the Pragma_Identifier.
2529
2530 -- Note: if From_Aspect_Specification is set, then Sloc points to the
2531 -- aspect name, as does the Pragma_Identifier. In this case if the
2532 -- pragma has a local name argument (such as pragma Inline), it is
2533 -- resolved to point to the specific entity affected by the pragma.
2534
2535 --------------------------------------
2536 -- 2.8 Pragma Argument Association --
2537 --------------------------------------
2538
2539 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
2540 -- [pragma_argument_IDENTIFIER =>] NAME
2541 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
2542
2543 -- In Ada 2012, there are two more possibilities:
2544
2545 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
2546 -- [pragma_argument_ASPECT_MARK =>] NAME
2547 -- | [pragma_argument_ASPECT_MARK =>] EXPRESSION
2548
2549 -- where the interesting allowed cases (which do not fit the syntax of
2550 -- the first alternative above) are
2551
2552 -- ASPECT_MARK => Pre'Class |
2553 -- Post'Class |
2554 -- Type_Invariant'Class |
2555 -- Invariant'Class
2556
2557 -- We allow this special usage in all Ada modes, but it would be a
2558 -- pain to allow these aspects to pervade the pragma syntax, and the
2559 -- representation of pragma nodes internally. So what we do is to
2560 -- replace these ASPECT_MARK forms with identifiers whose name is one
2561 -- of the special internal names _Pre, _Post or _Type_Invariant.
2562
2563 -- We do a similar replacement of these Aspect_Mark forms in the
2564 -- Expression of a pragma argument association for the cases of
2565 -- the first arguments of any Check pragmas and Check_Policy pragmas
2566
2567 -- N_Pragma_Argument_Association
2568 -- Sloc points to first token in association
2569 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
2570 -- Expression (Node3)
2571
2572 ------------------------
2573 -- 2.9 Reserved Word --
2574 ------------------------
2575
2576 -- Reserved words are parsed by the scanner, and returned as the
2577 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
2578
2579 ----------------------------
2580 -- 3.1 Basic Declaration --
2581 ----------------------------
2582
2583 -- BASIC_DECLARATION ::=
2584 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
2585 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
2586 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
2587 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
2588 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
2589 -- | GENERIC_INSTANTIATION
2590
2591 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
2592 -- see further description in section on semantic nodes.
2593
2594 -- Also, in the tree that is constructed, a pragma may appear
2595 -- anywhere that a declaration may appear.
2596
2597 ------------------------------
2598 -- 3.1 Defining Identifier --
2599 ------------------------------
2600
2601 -- DEFINING_IDENTIFIER ::= IDENTIFIER
2602
2603 -- A defining identifier is an entity, which has additional fields
2604 -- depending on the setting of the Ekind field. These additional
2605 -- fields are defined (and access subprograms declared) in package
2606 -- Einfo.
2607
2608 -- Note: N_Defining_Identifier is an extended node whose fields are
2609 -- deliberate layed out to match the layout of fields in an ordinary
2610 -- N_Identifier node allowing for easy alteration of an identifier
2611 -- node into a defining identifier node. For details, see procedure
2612 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
2613
2614 -- N_Defining_Identifier
2615 -- Sloc points to identifier
2616 -- Chars (Name1) contains the Name_Id for the identifier
2617 -- Next_Entity (Node2-Sem)
2618 -- Scope (Node3-Sem)
2619 -- Etype (Node5-Sem)
2620
2621 -----------------------------
2622 -- 3.2.1 Type Declaration --
2623 -----------------------------
2624
2625 -- TYPE_DECLARATION ::=
2626 -- FULL_TYPE_DECLARATION
2627 -- | INCOMPLETE_TYPE_DECLARATION
2628 -- | PRIVATE_TYPE_DECLARATION
2629 -- | PRIVATE_EXTENSION_DECLARATION
2630
2631 ----------------------------------
2632 -- 3.2.1 Full Type Declaration --
2633 ----------------------------------
2634
2635 -- FULL_TYPE_DECLARATION ::=
2636 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
2637 -- is TYPE_DEFINITION
2638 -- [ASPECT_SPECIFICATIONS];
2639 -- | TASK_TYPE_DECLARATION
2640 -- | PROTECTED_TYPE_DECLARATION
2641
2642 -- The full type declaration node is used only for the first case. The
2643 -- second case (concurrent type declaration), is represented directly
2644 -- by a task type declaration or a protected type declaration.
2645
2646 -- N_Full_Type_Declaration
2647 -- Sloc points to TYPE
2648 -- Defining_Identifier (Node1)
2649 -- Incomplete_View (Node2-Sem)
2650 -- Discriminant_Specifications (List4) (set to No_List if none)
2651 -- Type_Definition (Node3)
2652 -- Discr_Check_Funcs_Built (Flag11-Sem)
2653
2654 ----------------------------
2655 -- 3.2.1 Type Definition --
2656 ----------------------------
2657
2658 -- TYPE_DEFINITION ::=
2659 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
2660 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
2661 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
2662 -- | DERIVED_TYPE_DEFINITION | INTERFACE_TYPE_DEFINITION
2663
2664 --------------------------------
2665 -- 3.2.2 Subtype Declaration --
2666 --------------------------------
2667
2668 -- SUBTYPE_DECLARATION ::=
2669 -- subtype DEFINING_IDENTIFIER is [NULL_EXCLUSION] SUBTYPE_INDICATION
2670 -- [ASPECT_SPECIFICATIONS];
2671
2672 -- The subtype indication field is set to Empty for subtypes
2673 -- declared in package Standard (Positive, Natural).
2674
2675 -- N_Subtype_Declaration
2676 -- Sloc points to SUBTYPE
2677 -- Defining_Identifier (Node1)
2678 -- Null_Exclusion_Present (Flag11)
2679 -- Subtype_Indication (Node5)
2680 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
2681 -- Exception_Junk (Flag8-Sem)
2682 -- Has_Dynamic_Range_Check (Flag12-Sem)
2683
2684 -------------------------------
2685 -- 3.2.2 Subtype Indication --
2686 -------------------------------
2687
2688 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
2689
2690 -- Note: if no constraint is present, the subtype indication appears
2691 -- directly in the tree as a subtype mark. The N_Subtype_Indication
2692 -- node is used only if a constraint is present.
2693
2694 -- Note: [For Ada 2005 (AI-231)]: Because Ada 2005 extends this rule
2695 -- with the null-exclusion part (see AI-231), we had to introduce a new
2696 -- attribute in all the parents of subtype_indication nodes to indicate
2697 -- if the null-exclusion is present.
2698
2699 -- Note: the reason that this node has expression fields is that a
2700 -- subtype indication can appear as an operand of a membership test.
2701
2702 -- N_Subtype_Indication
2703 -- Sloc points to first token of subtype mark
2704 -- Subtype_Mark (Node4)
2705 -- Constraint (Node3)
2706 -- Etype (Node5-Sem)
2707 -- Must_Not_Freeze (Flag8-Sem)
2708
2709 -- Note: Depending on context, the Etype is either the entity of the
2710 -- Subtype_Mark field, or it is an itype constructed to reify the
2711 -- subtype indication. In particular, such itypes are created for a
2712 -- subtype indication that appears in an array type declaration. This
2713 -- simplifies constraint checking in indexed components.
2714
2715 -- For subtype indications that appear in scalar type and subtype
2716 -- declarations, the Etype is the entity of the subtype mark.
2717
2718 -------------------------
2719 -- 3.2.2 Subtype Mark --
2720 -------------------------
2721
2722 -- SUBTYPE_MARK ::= subtype_NAME
2723
2724 -----------------------
2725 -- 3.2.2 Constraint --
2726 -----------------------
2727
2728 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
2729
2730 ------------------------------
2731 -- 3.2.2 Scalar Constraint --
2732 ------------------------------
2733
2734 -- SCALAR_CONSTRAINT ::=
2735 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
2736
2737 ---------------------------------
2738 -- 3.2.2 Composite Constraint --
2739 ---------------------------------
2740
2741 -- COMPOSITE_CONSTRAINT ::=
2742 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
2743
2744 -------------------------------
2745 -- 3.3.1 Object Declaration --
2746 -------------------------------
2747
2748 -- OBJECT_DECLARATION ::=
2749 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2750 -- [NULL_EXCLUSION] SUBTYPE_INDICATION [:= EXPRESSION]
2751 -- [ASPECT_SPECIFICATIONS];
2752 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2753 -- ACCESS_DEFINITION [:= EXPRESSION]
2754 -- [ASPECT_SPECIFICATIONS];
2755 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2756 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION]
2757 -- [ASPECT_SPECIFICATIONS];
2758 -- | SINGLE_TASK_DECLARATION
2759 -- | SINGLE_PROTECTED_DECLARATION
2760
2761 -- Note: aliased is not permitted in Ada 83 mode
2762
2763 -- The N_Object_Declaration node is only for the first three cases.
2764 -- Single task declaration is handled by P_Task (9.1)
2765 -- Single protected declaration is handled by P_protected (9.5)
2766
2767 -- Although the syntax allows multiple identifiers in the list, the
2768 -- semantics is as though successive declarations were given with
2769 -- identical type definition and expression components. To simplify
2770 -- semantic processing, the parser represents a multiple declaration
2771 -- case as a sequence of single declarations, using the More_Ids and
2772 -- Prev_Ids flags to preserve the original source form as described
2773 -- in the section on "Handling of Defining Identifier Lists".
2774
2775 -- The flag Has_Init_Expression is set if an initializing expression
2776 -- is present. Normally it is set if and only if Expression contains
2777 -- a non-empty value, but there is an exception to this. When the
2778 -- initializing expression is an aggregate which requires explicit
2779 -- assignments, the Expression field gets set to Empty, but this flag
2780 -- is still set, so we don't forget we had an initializing expression.
2781
2782 -- Note: if a range check is required for the initialization
2783 -- expression then the Do_Range_Check flag is set in the Expression,
2784 -- with the check being done against the type given by the object
2785 -- definition, which is also the Etype of the defining identifier.
2786
2787 -- Note: the contents of the Expression field must be ignored (i.e.
2788 -- treated as though it were Empty) if No_Initialization is set True.
2789
2790 -- Note: the back end places some restrictions on the form of the
2791 -- Expression field. If the object being declared is Atomic, then
2792 -- the Expression may not have the form of an aggregate (since this
2793 -- might cause the back end to generate separate assignments). In this
2794 -- case the front end must generate an extra temporary and initialize
2795 -- this temporary as required (the temporary itself is not atomic).
2796
2797 -- Note: there is not node kind for object definition. Instead, the
2798 -- corresponding field holds a subtype indication, an array type
2799 -- definition, or (Ada 2005, AI-406) an access definition.
2800
2801 -- N_Object_Declaration
2802 -- Sloc points to first identifier
2803 -- Defining_Identifier (Node1)
2804 -- Aliased_Present (Flag4)
2805 -- Constant_Present (Flag17) set if CONSTANT appears
2806 -- Null_Exclusion_Present (Flag11)
2807 -- Object_Definition (Node4) subtype indic./array type def./access def.
2808 -- Expression (Node3) (set to Empty if not present)
2809 -- Handler_List_Entry (Node2-Sem)
2810 -- Corresponding_Generic_Association (Node5-Sem)
2811 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2812 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2813 -- No_Initialization (Flag13-Sem)
2814 -- Assignment_OK (Flag15-Sem)
2815 -- Exception_Junk (Flag8-Sem)
2816 -- Is_Subprogram_Descriptor (Flag16-Sem)
2817 -- Has_Init_Expression (Flag14)
2818 -- Suppress_Assignment_Checks (Flag18-Sem)
2819
2820 -------------------------------------
2821 -- 3.3.1 Defining Identifier List --
2822 -------------------------------------
2823
2824 -- DEFINING_IDENTIFIER_LIST ::=
2825 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
2826
2827 -------------------------------
2828 -- 3.3.2 Number Declaration --
2829 -------------------------------
2830
2831 -- NUMBER_DECLARATION ::=
2832 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
2833
2834 -- Although the syntax allows multiple identifiers in the list, the
2835 -- semantics is as though successive declarations were given with
2836 -- identical expressions. To simplify semantic processing, the parser
2837 -- represents a multiple declaration case as a sequence of single
2838 -- declarations, using the More_Ids and Prev_Ids flags to preserve
2839 -- the original source form as described in the section on "Handling
2840 -- of Defining Identifier Lists".
2841
2842 -- N_Number_Declaration
2843 -- Sloc points to first identifier
2844 -- Defining_Identifier (Node1)
2845 -- Expression (Node3)
2846 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2847 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2848
2849 ----------------------------------
2850 -- 3.4 Derived Type Definition --
2851 ----------------------------------
2852
2853 -- DERIVED_TYPE_DEFINITION ::=
2854 -- [abstract] [limited] new [NULL_EXCLUSION] parent_SUBTYPE_INDICATION
2855 -- [[and INTERFACE_LIST] RECORD_EXTENSION_PART]
2856
2857 -- Note: ABSTRACT, LIMITED and record extension part are not permitted
2858 -- in Ada 83 mode
2859
2860 -- Note: a record extension part is required if ABSTRACT is present
2861
2862 -- N_Derived_Type_Definition
2863 -- Sloc points to NEW
2864 -- Abstract_Present (Flag4)
2865 -- Null_Exclusion_Present (Flag11) (set to False if not present)
2866 -- Subtype_Indication (Node5)
2867 -- Record_Extension_Part (Node3) (set to Empty if not present)
2868 -- Limited_Present (Flag17)
2869 -- Task_Present (Flag5) set in task interfaces
2870 -- Protected_Present (Flag6) set in protected interfaces
2871 -- Synchronized_Present (Flag7) set in interfaces
2872 -- Interface_List (List2) (set to No_List if none)
2873 -- Interface_Present (Flag16) set in abstract interfaces
2874
2875 -- Note: Task_Present, Protected_Present, Synchronized_Present,
2876 -- Interface_List, and Interface_Present are used for abstract
2877 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2878
2879 ---------------------------
2880 -- 3.5 Range Constraint --
2881 ---------------------------
2882
2883 -- RANGE_CONSTRAINT ::= range RANGE
2884
2885 -- N_Range_Constraint
2886 -- Sloc points to RANGE
2887 -- Range_Expression (Node4)
2888
2889 ----------------
2890 -- 3.5 Range --
2891 ----------------
2892
2893 -- RANGE ::=
2894 -- RANGE_ATTRIBUTE_REFERENCE
2895 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
2896
2897 -- Note: the case of a range given as a range attribute reference
2898 -- appears directly in the tree as an attribute reference.
2899
2900 -- Note: the field name for a reference to a range is Range_Expression
2901 -- rather than Range, because range is a reserved keyword in Ada.
2902
2903 -- Note: the reason that this node has expression fields is that a
2904 -- range can appear as an operand of a membership test. The Etype
2905 -- field is the type of the range (we do NOT construct an implicit
2906 -- subtype to represent the range exactly).
2907
2908 -- N_Range
2909 -- Sloc points to ..
2910 -- Low_Bound (Node1)
2911 -- High_Bound (Node2)
2912 -- Includes_Infinities (Flag11)
2913 -- plus fields for expression
2914
2915 -- Note: if the range appears in a context, such as a subtype
2916 -- declaration, where range checks are required on one or both of
2917 -- the expression fields, then type conversion nodes are inserted
2918 -- to represent the required checks.
2919
2920 ----------------------------------------
2921 -- 3.5.1 Enumeration Type Definition --
2922 ----------------------------------------
2923
2924 -- ENUMERATION_TYPE_DEFINITION ::=
2925 -- (ENUMERATION_LITERAL_SPECIFICATION
2926 -- {, ENUMERATION_LITERAL_SPECIFICATION})
2927
2928 -- Note: the Literals field in the node described below is null for
2929 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
2930 -- which special processing handles these types as special cases.
2931
2932 -- N_Enumeration_Type_Definition
2933 -- Sloc points to left parenthesis
2934 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
2935 -- End_Label (Node4) (set to Empty if internally generated record)
2936
2937 ----------------------------------------------
2938 -- 3.5.1 Enumeration Literal Specification --
2939 ----------------------------------------------
2940
2941 -- ENUMERATION_LITERAL_SPECIFICATION ::=
2942 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
2943
2944 ---------------------------------------
2945 -- 3.5.1 Defining Character Literal --
2946 ---------------------------------------
2947
2948 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
2949
2950 -- A defining character literal is an entity, which has additional
2951 -- fields depending on the setting of the Ekind field. These
2952 -- additional fields are defined (and access subprograms declared)
2953 -- in package Einfo.
2954
2955 -- Note: N_Defining_Character_Literal is an extended node whose fields
2956 -- are deliberate layed out to match the layout of fields in an ordinary
2957 -- N_Character_Literal node allowing for easy alteration of a character
2958 -- literal node into a defining character literal node. For details, see
2959 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
2960
2961 -- N_Defining_Character_Literal
2962 -- Sloc points to literal
2963 -- Chars (Name1) contains the Name_Id for the identifier
2964 -- Next_Entity (Node2-Sem)
2965 -- Scope (Node3-Sem)
2966 -- Etype (Node5-Sem)
2967
2968 ------------------------------------
2969 -- 3.5.4 Integer Type Definition --
2970 ------------------------------------
2971
2972 -- Note: there is an error in this rule in the latest version of the
2973 -- grammar, so we have retained the old rule pending clarification.
2974
2975 -- INTEGER_TYPE_DEFINITION ::=
2976 -- SIGNED_INTEGER_TYPE_DEFINITION
2977 -- | MODULAR_TYPE_DEFINITION
2978
2979 -------------------------------------------
2980 -- 3.5.4 Signed Integer Type Definition --
2981 -------------------------------------------
2982
2983 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
2984 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2985
2986 -- Note: the Low_Bound and High_Bound fields are set to Empty
2987 -- for integer types defined in package Standard.
2988
2989 -- N_Signed_Integer_Type_Definition
2990 -- Sloc points to RANGE
2991 -- Low_Bound (Node1)
2992 -- High_Bound (Node2)
2993
2994 ------------------------------------
2995 -- 3.5.4 Modular Type Definition --
2996 ------------------------------------
2997
2998 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
2999
3000 -- N_Modular_Type_Definition
3001 -- Sloc points to MOD
3002 -- Expression (Node3)
3003
3004 ---------------------------------
3005 -- 3.5.6 Real Type Definition --
3006 ---------------------------------
3007
3008 -- REAL_TYPE_DEFINITION ::=
3009 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
3010
3011 --------------------------------------
3012 -- 3.5.7 Floating Point Definition --
3013 --------------------------------------
3014
3015 -- FLOATING_POINT_DEFINITION ::=
3016 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
3017
3018 -- Note: The Digits_Expression and Real_Range_Specifications fields
3019 -- are set to Empty for floating-point types declared in Standard.
3020
3021 -- N_Floating_Point_Definition
3022 -- Sloc points to DIGITS
3023 -- Digits_Expression (Node2)
3024 -- Real_Range_Specification (Node4) (set to Empty if not present)
3025
3026 -------------------------------------
3027 -- 3.5.7 Real Range Specification --
3028 -------------------------------------
3029
3030 -- REAL_RANGE_SPECIFICATION ::=
3031 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
3032
3033 -- N_Real_Range_Specification
3034 -- Sloc points to RANGE
3035 -- Low_Bound (Node1)
3036 -- High_Bound (Node2)
3037
3038 -----------------------------------
3039 -- 3.5.9 Fixed Point Definition --
3040 -----------------------------------
3041
3042 -- FIXED_POINT_DEFINITION ::=
3043 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
3044
3045 --------------------------------------------
3046 -- 3.5.9 Ordinary Fixed Point Definition --
3047 --------------------------------------------
3048
3049 -- ORDINARY_FIXED_POINT_DEFINITION ::=
3050 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
3051
3052 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
3053
3054 -- N_Ordinary_Fixed_Point_Definition
3055 -- Sloc points to DELTA
3056 -- Delta_Expression (Node3)
3057 -- Real_Range_Specification (Node4)
3058
3059 -------------------------------------------
3060 -- 3.5.9 Decimal Fixed Point Definition --
3061 -------------------------------------------
3062
3063 -- DECIMAL_FIXED_POINT_DEFINITION ::=
3064 -- delta static_EXPRESSION
3065 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
3066
3067 -- Note: decimal types are not permitted in Ada 83 mode
3068
3069 -- N_Decimal_Fixed_Point_Definition
3070 -- Sloc points to DELTA
3071 -- Delta_Expression (Node3)
3072 -- Digits_Expression (Node2)
3073 -- Real_Range_Specification (Node4) (set to Empty if not present)
3074
3075 ------------------------------
3076 -- 3.5.9 Digits Constraint --
3077 ------------------------------
3078
3079 -- DIGITS_CONSTRAINT ::=
3080 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
3081
3082 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
3083 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
3084
3085 -- N_Digits_Constraint
3086 -- Sloc points to DIGITS
3087 -- Digits_Expression (Node2)
3088 -- Range_Constraint (Node4) (set to Empty if not present)
3089
3090 --------------------------------
3091 -- 3.6 Array Type Definition --
3092 --------------------------------
3093
3094 -- ARRAY_TYPE_DEFINITION ::=
3095 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
3096
3097 -----------------------------------------
3098 -- 3.6 Unconstrained Array Definition --
3099 -----------------------------------------
3100
3101 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
3102 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
3103 -- COMPONENT_DEFINITION
3104
3105 -- Note: dimensionality of array is indicated by number of entries in
3106 -- the Subtype_Marks list, which has one entry for each dimension.
3107
3108 -- N_Unconstrained_Array_Definition
3109 -- Sloc points to ARRAY
3110 -- Subtype_Marks (List2)
3111 -- Component_Definition (Node4)
3112
3113 -----------------------------------
3114 -- 3.6 Index Subtype Definition --
3115 -----------------------------------
3116
3117 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
3118
3119 -- There is no explicit node in the tree for an index subtype
3120 -- definition since the N_Unconstrained_Array_Definition node
3121 -- incorporates the type marks which appear in this context.
3122
3123 ---------------------------------------
3124 -- 3.6 Constrained Array Definition --
3125 ---------------------------------------
3126
3127 -- CONSTRAINED_ARRAY_DEFINITION ::=
3128 -- array (DISCRETE_SUBTYPE_DEFINITION
3129 -- {, DISCRETE_SUBTYPE_DEFINITION})
3130 -- of COMPONENT_DEFINITION
3131
3132 -- Note: dimensionality of array is indicated by number of entries
3133 -- in the Discrete_Subtype_Definitions list, which has one entry
3134 -- for each dimension.
3135
3136 -- N_Constrained_Array_Definition
3137 -- Sloc points to ARRAY
3138 -- Discrete_Subtype_Definitions (List2)
3139 -- Component_Definition (Node4)
3140
3141 -- Note: although the language allows the full syntax for discrete
3142 -- subtype definitions (i.e. a discrete subtype indication or a range),
3143 -- in the generated tree, we always rewrite these as N_Range nodes.
3144
3145 --------------------------------------
3146 -- 3.6 Discrete Subtype Definition --
3147 --------------------------------------
3148
3149 -- DISCRETE_SUBTYPE_DEFINITION ::=
3150 -- discrete_SUBTYPE_INDICATION | RANGE
3151
3152 -------------------------------
3153 -- 3.6 Component Definition --
3154 -------------------------------
3155
3156 -- COMPONENT_DEFINITION ::=
3157 -- [aliased] [NULL_EXCLUSION] SUBTYPE_INDICATION | ACCESS_DEFINITION
3158
3159 -- Note: although the syntax does not permit a component definition to
3160 -- be an anonymous array (and the parser will diagnose such an attempt
3161 -- with an appropriate message), it is possible for anonymous arrays
3162 -- to appear as component definitions. The semantics and back end handle
3163 -- this case properly, and the expander in fact generates such cases.
3164 -- Access_Definition is an optional field that gives support to
3165 -- Ada 2005 (AI-230). The parser generates nodes that have either the
3166 -- Subtype_Indication field or else the Access_Definition field.
3167
3168 -- N_Component_Definition
3169 -- Sloc points to ALIASED, ACCESS or to first token of subtype mark
3170 -- Aliased_Present (Flag4)
3171 -- Null_Exclusion_Present (Flag11)
3172 -- Subtype_Indication (Node5) (set to Empty if not present)
3173 -- Access_Definition (Node3) (set to Empty if not present)
3174
3175 -----------------------------
3176 -- 3.6.1 Index Constraint --
3177 -----------------------------
3178
3179 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
3180
3181 -- It is not in general possible to distinguish between discriminant
3182 -- constraints and index constraints at parse time, since a simple
3183 -- name could be either the subtype mark of a discrete range, or an
3184 -- expression in a discriminant association with no name. Either
3185 -- entry appears simply as the name, and the semantic parse must
3186 -- distinguish between the two cases. Thus we use a common tree
3187 -- node format for both of these constraint types.
3188
3189 -- See Discriminant_Constraint for format of node
3190
3191 ---------------------------
3192 -- 3.6.1 Discrete Range --
3193 ---------------------------
3194
3195 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
3196
3197 ----------------------------
3198 -- 3.7 Discriminant Part --
3199 ----------------------------
3200
3201 -- DISCRIMINANT_PART ::=
3202 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
3203
3204 ------------------------------------
3205 -- 3.7 Unknown Discriminant Part --
3206 ------------------------------------
3207
3208 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
3209
3210 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
3211
3212 -- There is no explicit node in the tree for an unknown discriminant
3213 -- part. Instead the Unknown_Discriminants_Present flag is set in the
3214 -- parent node.
3215
3216 ----------------------------------
3217 -- 3.7 Known Discriminant Part --
3218 ----------------------------------
3219
3220 -- KNOWN_DISCRIMINANT_PART ::=
3221 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
3222
3223 -------------------------------------
3224 -- 3.7 Discriminant Specification --
3225 -------------------------------------
3226
3227 -- DISCRIMINANT_SPECIFICATION ::=
3228 -- DEFINING_IDENTIFIER_LIST : [NULL_EXCLUSION] SUBTYPE_MARK
3229 -- [:= DEFAULT_EXPRESSION]
3230 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
3231 -- [:= DEFAULT_EXPRESSION]
3232
3233 -- Although the syntax allows multiple identifiers in the list, the
3234 -- semantics is as though successive specifications were given with
3235 -- identical type definition and expression components. To simplify
3236 -- semantic processing, the parser represents a multiple declaration
3237 -- case as a sequence of single specifications, using the More_Ids and
3238 -- Prev_Ids flags to preserve the original source form as described
3239 -- in the section on "Handling of Defining Identifier Lists".
3240
3241 -- N_Discriminant_Specification
3242 -- Sloc points to first identifier
3243 -- Defining_Identifier (Node1)
3244 -- Null_Exclusion_Present (Flag11)
3245 -- Discriminant_Type (Node5) subtype mark or access parameter definition
3246 -- Expression (Node3) (set to Empty if no default expression)
3247 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3248 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3249
3250 -----------------------------
3251 -- 3.7 Default Expression --
3252 -----------------------------
3253
3254 -- DEFAULT_EXPRESSION ::= EXPRESSION
3255
3256 ------------------------------------
3257 -- 3.7.1 Discriminant Constraint --
3258 ------------------------------------
3259
3260 -- DISCRIMINANT_CONSTRAINT ::=
3261 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
3262
3263 -- It is not in general possible to distinguish between discriminant
3264 -- constraints and index constraints at parse time, since a simple
3265 -- name could be either the subtype mark of a discrete range, or an
3266 -- expression in a discriminant association with no name. Either
3267 -- entry appears simply as the name, and the semantic parse must
3268 -- distinguish between the two cases. Thus we use a common tree
3269 -- node format for both of these constraint types.
3270
3271 -- N_Index_Or_Discriminant_Constraint
3272 -- Sloc points to left paren
3273 -- Constraints (List1) points to list of discrete ranges or
3274 -- discriminant associations
3275
3276 -------------------------------------
3277 -- 3.7.1 Discriminant Association --
3278 -------------------------------------
3279
3280 -- DISCRIMINANT_ASSOCIATION ::=
3281 -- [discriminant_SELECTOR_NAME
3282 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
3283
3284 -- Note: a discriminant association that has no selector name list
3285 -- appears directly as an expression in the tree.
3286
3287 -- N_Discriminant_Association
3288 -- Sloc points to first token of discriminant association
3289 -- Selector_Names (List1) (always non-empty, since if no selector
3290 -- names are present, this node is not used, see comment above)
3291 -- Expression (Node3)
3292
3293 ---------------------------------
3294 -- 3.8 Record Type Definition --
3295 ---------------------------------
3296
3297 -- RECORD_TYPE_DEFINITION ::=
3298 -- [[abstract] tagged] [limited] RECORD_DEFINITION
3299
3300 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
3301
3302 -- There is no explicit node in the tree for a record type definition.
3303 -- Instead the flags for Tagged_Present and Limited_Present appear in
3304 -- the N_Record_Definition node for a record definition appearing in
3305 -- the context of a record type definition.
3306
3307 ----------------------------
3308 -- 3.8 Record Definition --
3309 ----------------------------
3310
3311 -- RECORD_DEFINITION ::=
3312 -- record
3313 -- COMPONENT_LIST
3314 -- end record
3315 -- | null record
3316
3317 -- Note: the Abstract_Present, Tagged_Present and Limited_Present
3318 -- flags appear only for a record definition appearing in a record
3319 -- type definition.
3320
3321 -- Note: the NULL RECORD case is not permitted in Ada 83
3322
3323 -- N_Record_Definition
3324 -- Sloc points to RECORD or NULL
3325 -- End_Label (Node4) (set to Empty if internally generated record)
3326 -- Abstract_Present (Flag4)
3327 -- Tagged_Present (Flag15)
3328 -- Limited_Present (Flag17)
3329 -- Component_List (Node1) empty in null record case
3330 -- Null_Present (Flag13) set in null record case
3331 -- Task_Present (Flag5) set in task interfaces
3332 -- Protected_Present (Flag6) set in protected interfaces
3333 -- Synchronized_Present (Flag7) set in interfaces
3334 -- Interface_Present (Flag16) set in abstract interfaces
3335 -- Interface_List (List2) (set to No_List if none)
3336
3337 -- Note: Task_Present, Protected_Present, Synchronized _Present,
3338 -- Interface_List and Interface_Present are used for abstract
3339 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
3340
3341 -------------------------
3342 -- 3.8 Component List --
3343 -------------------------
3344
3345 -- COMPONENT_LIST ::=
3346 -- COMPONENT_ITEM {COMPONENT_ITEM}
3347 -- | {COMPONENT_ITEM} VARIANT_PART
3348 -- | null;
3349
3350 -- N_Component_List
3351 -- Sloc points to first token of component list
3352 -- Component_Items (List3)
3353 -- Variant_Part (Node4) (set to Empty if no variant part)
3354 -- Null_Present (Flag13)
3355
3356 -------------------------
3357 -- 3.8 Component Item --
3358 -------------------------
3359
3360 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
3361
3362 -- Note: A component item can also be a pragma, and in the tree
3363 -- that is obtained after semantic processing, a component item
3364 -- can be an N_Null node resulting from a non-recognized pragma.
3365
3366 --------------------------------
3367 -- 3.8 Component Declaration --
3368 --------------------------------
3369
3370 -- COMPONENT_DECLARATION ::=
3371 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
3372 -- [:= DEFAULT_EXPRESSION]
3373 -- [ASPECT_SPECIFICATIONS];
3374
3375 -- Note: although the syntax does not permit a component definition to
3376 -- be an anonymous array (and the parser will diagnose such an attempt
3377 -- with an appropriate message), it is possible for anonymous arrays
3378 -- to appear as component definitions. The semantics and back end handle
3379 -- this case properly, and the expander in fact generates such cases.
3380
3381 -- Although the syntax allows multiple identifiers in the list, the
3382 -- semantics is as though successive declarations were given with the
3383 -- same component definition and expression components. To simplify
3384 -- semantic processing, the parser represents a multiple declaration
3385 -- case as a sequence of single declarations, using the More_Ids and
3386 -- Prev_Ids flags to preserve the original source form as described
3387 -- in the section on "Handling of Defining Identifier Lists".
3388
3389 -- N_Component_Declaration
3390 -- Sloc points to first identifier
3391 -- Defining_Identifier (Node1)
3392 -- Component_Definition (Node4)
3393 -- Expression (Node3) (set to Empty if no default expression)
3394 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3395 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3396
3397 -------------------------
3398 -- 3.8.1 Variant Part --
3399 -------------------------
3400
3401 -- VARIANT_PART ::=
3402 -- case discriminant_DIRECT_NAME is
3403 -- VARIANT {VARIANT}
3404 -- end case;
3405
3406 -- Note: the variants list can contain pragmas as well as variants.
3407 -- In a properly formed program there is at least one variant.
3408
3409 -- N_Variant_Part
3410 -- Sloc points to CASE
3411 -- Name (Node2)
3412 -- Variants (List1)
3413
3414 --------------------
3415 -- 3.8.1 Variant --
3416 --------------------
3417
3418 -- VARIANT ::=
3419 -- when DISCRETE_CHOICE_LIST =>
3420 -- COMPONENT_LIST
3421
3422 -- N_Variant
3423 -- Sloc points to WHEN
3424 -- Discrete_Choices (List4)
3425 -- Component_List (Node1)
3426 -- Enclosing_Variant (Node2-Sem)
3427 -- Present_Expr (Uint3-Sem)
3428 -- Dcheck_Function (Node5-Sem)
3429 -- Has_SP_Choice (Flag15-Sem)
3430
3431 -- Note: in the list of Discrete_Choices, the tree passed to the back
3432 -- end does not have choice entries corresponding to names of statically
3433 -- predicated subtypes. Such entries are always expanded out to the list
3434 -- of equivalent values or ranges. The ASIS tree generated in -gnatct
3435 -- mode also has this expansion, but done with a proper Rewrite call on
3436 -- the N_Variant node so that ASIS can properly retrieve the original.
3437
3438 ---------------------------------
3439 -- 3.8.1 Discrete Choice List --
3440 ---------------------------------
3441
3442 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
3443
3444 ----------------------------
3445 -- 3.8.1 Discrete Choice --
3446 ----------------------------
3447
3448 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
3449
3450 -- Note: in Ada 83 mode, the expression must be a simple expression
3451
3452 -- The only choice that appears explicitly is the OTHERS choice, as
3453 -- defined here. Other cases of discrete choice (expression and
3454 -- discrete range) appear directly. This production is also used
3455 -- for the OTHERS possibility of an exception choice.
3456
3457 -- Note: in accordance with the syntax, the parser does not check that
3458 -- OTHERS appears at the end on its own in a choice list context. This
3459 -- is a semantic check.
3460
3461 -- N_Others_Choice
3462 -- Sloc points to OTHERS
3463 -- Others_Discrete_Choices (List1-Sem)
3464 -- All_Others (Flag11-Sem)
3465
3466 ----------------------------------
3467 -- 3.9.1 Record Extension Part --
3468 ----------------------------------
3469
3470 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
3471
3472 -- Note: record extension parts are not permitted in Ada 83 mode
3473
3474 --------------------------------------
3475 -- 3.9.4 Interface Type Definition --
3476 --------------------------------------
3477
3478 -- INTERFACE_TYPE_DEFINITION ::=
3479 -- [limited | task | protected | synchronized]
3480 -- interface [interface_list]
3481
3482 -- Note: Interfaces are implemented with N_Record_Definition and
3483 -- N_Derived_Type_Definition nodes because most of the support
3484 -- for the analysis of abstract types has been reused to
3485 -- analyze abstract interfaces.
3486
3487 ----------------------------------
3488 -- 3.10 Access Type Definition --
3489 ----------------------------------
3490
3491 -- ACCESS_TYPE_DEFINITION ::=
3492 -- ACCESS_TO_OBJECT_DEFINITION
3493 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
3494
3495 --------------------------
3496 -- 3.10 Null Exclusion --
3497 --------------------------
3498
3499 -- NULL_EXCLUSION ::= not null
3500
3501 ---------------------------------------
3502 -- 3.10 Access To Object Definition --
3503 ---------------------------------------
3504
3505 -- ACCESS_TO_OBJECT_DEFINITION ::=
3506 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER]
3507 -- SUBTYPE_INDICATION
3508
3509 -- N_Access_To_Object_Definition
3510 -- Sloc points to ACCESS
3511 -- All_Present (Flag15)
3512 -- Null_Exclusion_Present (Flag11)
3513 -- Null_Excluding_Subtype (Flag16)
3514 -- Subtype_Indication (Node5)
3515 -- Constant_Present (Flag17)
3516
3517 -----------------------------------
3518 -- 3.10 General Access Modifier --
3519 -----------------------------------
3520
3521 -- GENERAL_ACCESS_MODIFIER ::= all | constant
3522
3523 -- Note: general access modifiers are not permitted in Ada 83 mode
3524
3525 -- There is no explicit node in the tree for general access modifier.
3526 -- Instead the All_Present or Constant_Present flags are set in the
3527 -- parent node.
3528
3529 -------------------------------------------
3530 -- 3.10 Access To Subprogram Definition --
3531 -------------------------------------------
3532
3533 -- ACCESS_TO_SUBPROGRAM_DEFINITION
3534 -- [NULL_EXCLUSION] access [protected] procedure PARAMETER_PROFILE
3535 -- | [NULL_EXCLUSION] access [protected] function
3536 -- PARAMETER_AND_RESULT_PROFILE
3537
3538 -- Note: access to subprograms are not permitted in Ada 83 mode
3539
3540 -- N_Access_Function_Definition
3541 -- Sloc points to ACCESS
3542 -- Null_Exclusion_Present (Flag11)
3543 -- Null_Exclusion_In_Return_Present (Flag14)
3544 -- Protected_Present (Flag6)
3545 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3546 -- Result_Definition (Node4) result subtype (subtype mark or access def)
3547
3548 -- N_Access_Procedure_Definition
3549 -- Sloc points to ACCESS
3550 -- Null_Exclusion_Present (Flag11)
3551 -- Protected_Present (Flag6)
3552 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3553
3554 -----------------------------
3555 -- 3.10 Access Definition --
3556 -----------------------------
3557
3558 -- ACCESS_DEFINITION ::=
3559 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER] SUBTYPE_MARK
3560 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
3561
3562 -- Note: access to subprograms are an Ada 2005 (AI-254) extension
3563
3564 -- N_Access_Definition
3565 -- Sloc points to ACCESS
3566 -- Null_Exclusion_Present (Flag11)
3567 -- All_Present (Flag15)
3568 -- Constant_Present (Flag17)
3569 -- Subtype_Mark (Node4)
3570 -- Access_To_Subprogram_Definition (Node3) (set to Empty if not present)
3571
3572 -----------------------------------------
3573 -- 3.10.1 Incomplete Type Declaration --
3574 -----------------------------------------
3575
3576 -- INCOMPLETE_TYPE_DECLARATION ::=
3577 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [IS TAGGED];
3578
3579 -- N_Incomplete_Type_Declaration
3580 -- Sloc points to TYPE
3581 -- Defining_Identifier (Node1)
3582 -- Discriminant_Specifications (List4) (set to No_List if no
3583 -- discriminant part, or if the discriminant part is an
3584 -- unknown discriminant part)
3585 -- Premature_Use (Node5-Sem) used for improved diagnostics.
3586 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
3587 -- Tagged_Present (Flag15)
3588
3589 ----------------------------
3590 -- 3.11 Declarative Part --
3591 ----------------------------
3592
3593 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
3594
3595 -- Note: although the parser enforces the syntactic requirement that
3596 -- a declarative part can contain only declarations, the semantic
3597 -- processing may add statements to the list of actions in a
3598 -- declarative part, so the code generator should be prepared
3599 -- to accept a statement in this position.
3600
3601 ----------------------------
3602 -- 3.11 Declarative Item --
3603 ----------------------------
3604
3605 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
3606
3607 ----------------------------------
3608 -- 3.11 Basic Declarative Item --
3609 ----------------------------------
3610
3611 -- BASIC_DECLARATIVE_ITEM ::=
3612 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
3613
3614 ----------------
3615 -- 3.11 Body --
3616 ----------------
3617
3618 -- BODY ::= PROPER_BODY | BODY_STUB
3619
3620 -----------------------
3621 -- 3.11 Proper Body --
3622 -----------------------
3623
3624 -- PROPER_BODY ::=
3625 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
3626
3627 ---------------
3628 -- 4.1 Name --
3629 ---------------
3630
3631 -- NAME ::=
3632 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
3633 -- | INDEXED_COMPONENT | SLICE
3634 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
3635 -- | TYPE_CONVERSION | FUNCTION_CALL
3636 -- | CHARACTER_LITERAL
3637
3638 ----------------------
3639 -- 4.1 Direct Name --
3640 ----------------------
3641
3642 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
3643
3644 -----------------
3645 -- 4.1 Prefix --
3646 -----------------
3647
3648 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
3649
3650 -------------------------------
3651 -- 4.1 Explicit Dereference --
3652 -------------------------------
3653
3654 -- EXPLICIT_DEREFERENCE ::= NAME . all
3655
3656 -- N_Explicit_Dereference
3657 -- Sloc points to ALL
3658 -- Prefix (Node3)
3659 -- Actual_Designated_Subtype (Node4-Sem)
3660 -- Atomic_Sync_Required (Flag14-Sem)
3661 -- Has_Dereference_Action (Flag13-Sem)
3662 -- plus fields for expression
3663
3664 -------------------------------
3665 -- 4.1 Implicit Dereference --
3666 -------------------------------
3667
3668 -- IMPLICIT_DEREFERENCE ::= NAME
3669
3670 ------------------------------
3671 -- 4.1.1 Indexed Component --
3672 ------------------------------
3673
3674 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
3675
3676 -- Note: the parser may generate this node in some situations where it
3677 -- should be a function call. The semantic pass must correct this
3678 -- misidentification (which is inevitable at the parser level).
3679
3680 -- N_Indexed_Component
3681 -- Sloc contains a copy of the Sloc value of the Prefix
3682 -- Prefix (Node3)
3683 -- Expressions (List1)
3684 -- Generalized_Indexing (Node4-Sem)
3685 -- Atomic_Sync_Required (Flag14-Sem)
3686 -- plus fields for expression
3687
3688 -- Note: if any of the subscripts requires a range check, then the
3689 -- Do_Range_Check flag is set on the corresponding expression, with
3690 -- the index type being determined from the type of the Prefix, which
3691 -- references the array being indexed.
3692
3693 -- Note: in a fully analyzed and expanded indexed component node, and
3694 -- hence in any such node that gigi sees, if the prefix is an access
3695 -- type, then an explicit dereference operation has been inserted.
3696
3697 ------------------
3698 -- 4.1.2 Slice --
3699 ------------------
3700
3701 -- SLICE ::= PREFIX (DISCRETE_RANGE)
3702
3703 -- Note: an implicit subtype is created to describe the resulting
3704 -- type, so that the bounds of this type are the bounds of the slice.
3705
3706 -- N_Slice
3707 -- Sloc points to first token of prefix
3708 -- Prefix (Node3)
3709 -- Discrete_Range (Node4)
3710 -- plus fields for expression
3711
3712 -------------------------------
3713 -- 4.1.3 Selected Component --
3714 -------------------------------
3715
3716 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
3717
3718 -- Note: selected components that are semantically expanded names get
3719 -- changed during semantic processing into the separate N_Expanded_Name
3720 -- node. See description of this node in the section on semantic nodes.
3721
3722 -- N_Selected_Component
3723 -- Sloc points to the period
3724 -- Prefix (Node3)
3725 -- Selector_Name (Node2)
3726 -- Associated_Node (Node4-Sem)
3727 -- Do_Discriminant_Check (Flag1-Sem)
3728 -- Is_In_Discriminant_Check (Flag11-Sem)
3729 -- Is_Prefixed_Call (Flag17-Sem)
3730 -- Atomic_Sync_Required (Flag14-Sem)
3731 -- plus fields for expression
3732
3733 --------------------------
3734 -- 4.1.3 Selector Name --
3735 --------------------------
3736
3737 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
3738
3739 --------------------------------
3740 -- 4.1.4 Attribute Reference --
3741 --------------------------------
3742
3743 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
3744
3745 -- Note: the syntax is quite ambiguous at this point. Consider:
3746
3747 -- A'Length (X) X is part of the attribute designator
3748 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
3749 -- A'Class (X) X is the expression of a type conversion
3750
3751 -- It would be possible for the parser to distinguish these cases
3752 -- by looking at the attribute identifier. However, that would mean
3753 -- more work in introducing new implementation defined attributes,
3754 -- and also it would mean that special processing for attributes
3755 -- would be scattered around, instead of being centralized in the
3756 -- semantic routine that handles an N_Attribute_Reference node.
3757 -- Consequently, the parser in all the above cases stores the
3758 -- expression (X in these examples) as a single element list in
3759 -- in the Expressions field of the N_Attribute_Reference node.
3760
3761 -- Similarly, for attributes like Max which take two arguments,
3762 -- we store the two arguments as a two element list in the
3763 -- Expressions field. Of course it is clear at parse time that
3764 -- this case is really a function call with an attribute as the
3765 -- prefix, but it turns out to be convenient to handle the two
3766 -- argument case in a similar manner to the one argument case,
3767 -- and indeed in general the parser will accept any number of
3768 -- expressions in this position and store them as a list in the
3769 -- attribute reference node. This allows for future addition of
3770 -- attributes that take more than two arguments.
3771
3772 -- Note: named associates are not permitted in function calls where
3773 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
3774 -- to skip the normal subprogram argument processing.
3775
3776 -- Note: for the attributes whose designators are technically keywords,
3777 -- i.e. digits, access, delta, range, the Attribute_Name field contains
3778 -- the corresponding name, even though no identifier is involved.
3779
3780 -- Note: the generated code may contain stream attributes applied to
3781 -- limited types for which no stream routines exist officially. In such
3782 -- case, the result is to use the stream attribute for the underlying
3783 -- full type, or in the case of a protected type, the components
3784 -- (including any discriminants) are merely streamed in order.
3785
3786 -- See Exp_Attr for a complete description of which attributes are
3787 -- passed onto Gigi, and which are handled entirely by the front end.
3788
3789 -- Gigi restriction: For the Pos attribute, the prefix cannot be
3790 -- a non-standard enumeration type or a nonzero/zero semantics
3791 -- boolean type, so the value is simply the stored representation.
3792
3793 -- Gigi requirement: For the Mechanism_Code attribute, if the prefix
3794 -- references a subprogram that is a renaming, then the front end must
3795 -- rewrite the attribute to refer directly to the renamed entity.
3796
3797 -- Note: syntactically the prefix of an attribute reference must be a
3798 -- name, and this (somewhat artificial) requirement is enforced by the
3799 -- parser. However, for many attributes, such as 'Valid, it is quite
3800 -- reasonable to apply the attribute to any value, and hence to any
3801 -- expression. Internally in the tree, the prefix is an expression which
3802 -- does not have to be a name, and this is handled fine by the semantic
3803 -- analysis and expansion, and back ends. This arises for the case of
3804 -- attribute references built by the expander (e.g. 'Valid for the case
3805 -- of an implicit validity check).
3806
3807 -- Note: In generated code, the Address and Unrestricted_Access
3808 -- attributes can be applied to any expression, and the meaning is
3809 -- to create an object containing the value (the object is in the
3810 -- current stack frame), and pass the address of this value. If the
3811 -- Must_Be_Byte_Aligned flag is set, then the object whose address
3812 -- is taken must be on a byte (storage unit) boundary, and if it is
3813 -- not (or may not be), then the generated code must create a copy
3814 -- that is byte aligned, and pass the address of this copy.
3815
3816 -- N_Attribute_Reference
3817 -- Sloc points to apostrophe
3818 -- Prefix (Node3) (general expression, see note above)
3819 -- Attribute_Name (Name2) identifier name from attribute designator
3820 -- Expressions (List1) (set to No_List if no associated expressions)
3821 -- Entity (Node4-Sem) used if the attribute yields a type
3822 -- Associated_Node (Node4-Sem)
3823 -- Do_Overflow_Check (Flag17-Sem)
3824 -- Header_Size_Added (Flag11-Sem)
3825 -- Must_Be_Byte_Aligned (Flag14-Sem)
3826 -- Non_Aliased_Prefix (Flag18-Sem)
3827 -- Redundant_Use (Flag13-Sem)
3828
3829 -- plus fields for expression
3830
3831 -- Note: in Modify_Tree_For_C mode, Max and Min attributes are expanded
3832 -- into equivalent if expressions, properly taking care of side effects.
3833
3834 ---------------------------------
3835 -- 4.1.4 Attribute Designator --
3836 ---------------------------------
3837
3838 -- ATTRIBUTE_DESIGNATOR ::=
3839 -- IDENTIFIER [(static_EXPRESSION)]
3840 -- | access | delta | digits
3841
3842 -- There is no explicit node in the tree for an attribute designator.
3843 -- Instead the Attribute_Name and Expressions fields of the parent
3844 -- node (N_Attribute_Reference node) hold the information.
3845
3846 -- Note: if ACCESS, DELTA or DIGITS appears in an attribute
3847 -- designator, then they are treated as identifiers internally
3848 -- rather than the keywords of the same name.
3849
3850 --------------------------------------
3851 -- 4.1.4 Range Attribute Reference --
3852 --------------------------------------
3853
3854 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
3855
3856 -- A range attribute reference is represented in the tree using the
3857 -- normal N_Attribute_Reference node.
3858
3859 ---------------------------------------
3860 -- 4.1.4 Range Attribute Designator --
3861 ---------------------------------------
3862
3863 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
3864
3865 -- A range attribute designator is represented in the tree using the
3866 -- normal N_Attribute_Reference node.
3867
3868 --------------------
3869 -- 4.3 Aggregate --
3870 --------------------
3871
3872 -- AGGREGATE ::=
3873 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
3874
3875 -----------------------------
3876 -- 4.3.1 Record Aggregate --
3877 -----------------------------
3878
3879 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
3880
3881 -- N_Aggregate
3882 -- Sloc points to left parenthesis
3883 -- Expressions (List1) (set to No_List if none or null record case)
3884 -- Component_Associations (List2) (set to No_List if none)
3885 -- Null_Record_Present (Flag17)
3886 -- Aggregate_Bounds (Node3-Sem)
3887 -- Associated_Node (Node4-Sem)
3888 -- Compile_Time_Known_Aggregate (Flag18-Sem)
3889 -- Expansion_Delayed (Flag11-Sem)
3890 -- Has_Self_Reference (Flag13-Sem)
3891 -- plus fields for expression
3892
3893 -- Note: this structure is used for both record and array aggregates
3894 -- since the two cases are not separable by the parser. The parser
3895 -- makes no attempt to enforce consistency here, so it is up to the
3896 -- semantic phase to make sure that the aggregate is consistent (i.e.
3897 -- that it is not a "half-and-half" case that mixes record and array
3898 -- syntax. In particular, for a record aggregate, the expressions
3899 -- field will be set if there are positional associations.
3900
3901 -- Note: N_Aggregate is not used for all aggregates; in particular,
3902 -- there is a separate node kind for extension aggregates.
3903
3904 -- Note: gigi/gcc can handle array aggregates correctly providing that
3905 -- they are entirely positional, and the array subtype involved has a
3906 -- known at compile time length and is not bit packed, or a convention
3907 -- Fortran array with more than one dimension. If these conditions
3908 -- are not met, then the front end must translate the aggregate into
3909 -- an appropriate set of assignments into a temporary.
3910
3911 -- Note: for the record aggregate case, gigi/gcc can handle most cases
3912 -- of record aggregates, including those for packed, and rep-claused
3913 -- records, and also variant records, providing that there are no
3914 -- variable length fields whose size is not known at compile time,
3915 -- and providing that the aggregate is presented in fully named form.
3916
3917 -- The other situation in which array aggregates and record aggregates
3918 -- cannot be passed to the back end is if assignment to one or more
3919 -- components itself needs expansion, e.g. in the case of an assignment
3920 -- of an object of a controlled type. In such cases, the front end
3921 -- must expand the aggregate to a series of assignments, and apply
3922 -- the required expansion to the individual assignment statements.
3923
3924 ----------------------------------------------
3925 -- 4.3.1 Record Component Association List --
3926 ----------------------------------------------
3927
3928 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
3929 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
3930 -- | null record
3931
3932 -- There is no explicit node in the tree for a record component
3933 -- association list. Instead the Null_Record_Present flag is set in
3934 -- the parent node for the NULL RECORD case.
3935
3936 ------------------------------------------------------
3937 -- 4.3.1 Record Component Association (also 4.3.3) --
3938 ------------------------------------------------------
3939
3940 -- RECORD_COMPONENT_ASSOCIATION ::=
3941 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
3942
3943 -- N_Component_Association
3944 -- Sloc points to first selector name
3945 -- Choices (List1)
3946 -- Loop_Actions (List2-Sem)
3947 -- Expression (Node3) (empty if Box_Present)
3948 -- Box_Present (Flag15)
3949 -- Inherited_Discriminant (Flag13)
3950
3951 -- Note: this structure is used for both record component associations
3952 -- and array component associations, since the two cases aren't always
3953 -- separable by the parser. The choices list may represent either a
3954 -- list of selector names in the record aggregate case, or a list of
3955 -- discrete choices in the array aggregate case or an N_Others_Choice
3956 -- node (which appears as a singleton list). Box_Present gives support
3957 -- to Ada 2005 (AI-287).
3958
3959 ----------------------------------
3960 -- 4.3.1 Component Choice List --
3961 ----------------------------------
3962
3963 -- COMPONENT_CHOICE_LIST ::=
3964 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
3965 -- | others
3966
3967 -- The entries of a component choice list appear in the Choices list of
3968 -- the associated N_Component_Association, as either selector names, or
3969 -- as an N_Others_Choice node.
3970
3971 --------------------------------
3972 -- 4.3.2 Extension Aggregate --
3973 --------------------------------
3974
3975 -- EXTENSION_AGGREGATE ::=
3976 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
3977
3978 -- Note: extension aggregates are not permitted in Ada 83 mode
3979
3980 -- N_Extension_Aggregate
3981 -- Sloc points to left parenthesis
3982 -- Ancestor_Part (Node3)
3983 -- Associated_Node (Node4-Sem)
3984 -- Expressions (List1) (set to No_List if none or null record case)
3985 -- Component_Associations (List2) (set to No_List if none)
3986 -- Null_Record_Present (Flag17)
3987 -- Expansion_Delayed (Flag11-Sem)
3988 -- Has_Self_Reference (Flag13-Sem)
3989 -- plus fields for expression
3990
3991 --------------------------
3992 -- 4.3.2 Ancestor Part --
3993 --------------------------
3994
3995 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
3996
3997 ----------------------------
3998 -- 4.3.3 Array Aggregate --
3999 ----------------------------
4000
4001 -- ARRAY_AGGREGATE ::=
4002 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
4003
4004 ---------------------------------------
4005 -- 4.3.3 Positional Array Aggregate --
4006 ---------------------------------------
4007
4008 -- POSITIONAL_ARRAY_AGGREGATE ::=
4009 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
4010 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
4011
4012 -- See Record_Aggregate (4.3.1) for node structure
4013
4014 ----------------------------------
4015 -- 4.3.3 Named Array Aggregate --
4016 ----------------------------------
4017
4018 -- NAMED_ARRAY_AGGREGATE ::=
4019 -- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
4020
4021 -- See Record_Aggregate (4.3.1) for node structure
4022
4023 ----------------------------------------
4024 -- 4.3.3 Array Component Association --
4025 ----------------------------------------
4026
4027 -- ARRAY_COMPONENT_ASSOCIATION ::=
4028 -- DISCRETE_CHOICE_LIST => EXPRESSION
4029
4030 -- See Record_Component_Association (4.3.1) for node structure
4031
4032 --------------------------------------------------
4033 -- 4.4 Expression/Relation/Term/Factor/Primary --
4034 --------------------------------------------------
4035
4036 -- EXPRESSION ::=
4037 -- RELATION {LOGICAL_OPERATOR RELATION}
4038
4039 -- CHOICE_EXPRESSION ::=
4040 -- CHOICE_RELATION {LOGICAL_OPERATOR CHOICE_RELATION}
4041
4042 -- CHOICE_RELATION ::=
4043 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
4044
4045 -- RELATION ::=
4046 -- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
4047 -- | RAISE_EXPRESSION
4048
4049 -- MEMBERSHIP_CHOICE_LIST ::=
4050 -- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
4051
4052 -- MEMBERSHIP_CHOICE ::=
4053 -- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
4054
4055 -- LOGICAL_OPERATOR ::= and | and then | or | or else | xor
4056
4057 -- SIMPLE_EXPRESSION ::=
4058 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
4059
4060 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
4061
4062 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
4063
4064 -- No nodes are generated for any of these constructs. Instead, the
4065 -- node for the operator appears directly. When we refer to an
4066 -- expression in this description, we mean any of the possible
4067 -- constituent components of an expression (e.g. identifier is
4068 -- an example of an expression).
4069
4070 -- Note: the above syntax is that Ada 2012 syntax which restricts
4071 -- choice relations to simple expressions to avoid ambiguities in
4072 -- some contexts with set membership notation. It has been decided
4073 -- that in retrospect, the Ada 95 change allowing general expressions
4074 -- in this context was a mistake, so we have reverted to the above
4075 -- syntax in Ada 95 and Ada 2005 modes (the restriction to simple
4076 -- expressions was there in Ada 83 from the start).
4077
4078 ------------------
4079 -- 4.4 Primary --
4080 ------------------
4081
4082 -- PRIMARY ::=
4083 -- NUMERIC_LITERAL | null
4084 -- | STRING_LITERAL | AGGREGATE
4085 -- | NAME | QUALIFIED_EXPRESSION
4086 -- | ALLOCATOR | (EXPRESSION)
4087
4088 -- Usually there is no explicit node in the tree for primary. Instead
4089 -- the constituent (e.g. AGGREGATE) appears directly. There are two
4090 -- exceptions. First, there is an explicit node for a null primary.
4091
4092 -- N_Null
4093 -- Sloc points to NULL
4094 -- plus fields for expression
4095
4096 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
4097 -- that the parser keep track of which subexpressions are enclosed
4098 -- in parentheses, and how many levels of parentheses are used. This
4099 -- information is required for optimization purposes, and also for
4100 -- some semantic checks (e.g. (((1))) in a procedure spec does not
4101 -- conform with ((((1)))) in the body).
4102
4103 -- The parentheses are recorded by keeping a Paren_Count field in every
4104 -- subexpression node (it is actually present in all nodes, but only
4105 -- used in subexpression nodes). This count records the number of
4106 -- levels of parentheses. If the number of levels in the source exceeds
4107 -- the maximum accommodated by this count, then the count is simply left
4108 -- at the maximum value. This means that there are some pathological
4109 -- cases of failure to detect conformance failures (e.g. an expression
4110 -- with 500 levels of parens will conform with one with 501 levels),
4111 -- but we do not need to lose sleep over this.
4112
4113 -- Historical note: in versions of GNAT prior to 1.75, there was a node
4114 -- type N_Parenthesized_Expression used to accurately record unlimited
4115 -- numbers of levels of parentheses. However, it turned out to be a
4116 -- real nuisance to have to take into account the possible presence of
4117 -- this node during semantic analysis, since basically parentheses have
4118 -- zero relevance to semantic analysis.
4119
4120 -- Note: the level of parentheses always present in things like
4121 -- aggregates does not count, only the parentheses in the primary
4122 -- (EXPRESSION) affect the setting of the Paren_Count field.
4123
4124 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
4125 -- treated as though it were Empty) if No_Initialization is set True.
4126
4127 --------------------------------------
4128 -- 4.5 Short-Circuit Control Forms --
4129 --------------------------------------
4130
4131 -- EXPRESSION ::=
4132 -- RELATION {and then RELATION} | RELATION {or else RELATION}
4133
4134 -- Gigi restriction: For both these control forms, the operand and
4135 -- result types are always Standard.Boolean. The expander inserts the
4136 -- required conversion operations where needed to ensure this is the
4137 -- case.
4138
4139 -- N_And_Then
4140 -- Sloc points to AND of AND THEN
4141 -- Left_Opnd (Node2)
4142 -- Right_Opnd (Node3)
4143 -- Actions (List1-Sem)
4144 -- plus fields for expression
4145
4146 -- N_Or_Else
4147 -- Sloc points to OR of OR ELSE
4148 -- Left_Opnd (Node2)
4149 -- Right_Opnd (Node3)
4150 -- Actions (List1-Sem)
4151 -- plus fields for expression
4152
4153 -- Note: The Actions field is used to hold actions associated with
4154 -- the right hand operand. These have to be treated specially since
4155 -- they are not unconditionally executed. See Insert_Actions for a
4156 -- more detailed description of how these actions are handled.
4157
4158 ---------------------------
4159 -- 4.5 Membership Tests --
4160 ---------------------------
4161
4162 -- RELATION ::=
4163 -- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
4164
4165 -- MEMBERSHIP_CHOICE_LIST ::=
4166 -- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
4167
4168 -- MEMBERSHIP_CHOICE ::=
4169 -- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
4170
4171 -- Note: although the grammar above allows only a range or a subtype
4172 -- mark, the parser in fact will accept any simple expression in place
4173 -- of a subtype mark. This means that the semantic analyzer must be able
4174 -- to deal with, and diagnose a simple expression other than a name for
4175 -- the right operand. This simplifies error recovery in the parser.
4176
4177 -- The Alternatives field below is present only if there is more than
4178 -- one Membership_Choice present (which is legitimate only in Ada 2012
4179 -- mode) in which case Right_Opnd is Empty, and Alternatives contains
4180 -- the list of choices. In the tree passed to the back end, Alternatives
4181 -- is always No_List, and Right_Opnd is set (i.e. the expansion circuit
4182 -- expands out the complex set membership case using simple membership
4183 -- and equality operations).
4184
4185 -- Should we rename Alternatives here to Membership_Choices ???
4186
4187 -- N_In
4188 -- Sloc points to IN
4189 -- Left_Opnd (Node2)
4190 -- Right_Opnd (Node3)
4191 -- Alternatives (List4) (set to No_List if only one set alternative)
4192 -- No_Minimize_Eliminate (Flag17)
4193 -- plus fields for expression
4194
4195 -- N_Not_In
4196 -- Sloc points to NOT of NOT IN
4197 -- Left_Opnd (Node2)
4198 -- Right_Opnd (Node3)
4199 -- Alternatives (List4) (set to No_List if only one set alternative)
4200 -- No_Minimize_Eliminate (Flag17)
4201 -- plus fields for expression
4202
4203 --------------------
4204 -- 4.5 Operators --
4205 --------------------
4206
4207 -- LOGICAL_OPERATOR ::= and | or | xor
4208
4209 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
4210
4211 -- BINARY_ADDING_OPERATOR ::= + | - | &
4212
4213 -- UNARY_ADDING_OPERATOR ::= + | -
4214
4215 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
4216
4217 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
4218
4219 -- Sprint syntax if Treat_Fixed_As_Integer is set:
4220
4221 -- x #* y
4222 -- x #/ y
4223 -- x #mod y
4224 -- x #rem y
4225
4226 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
4227 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
4228 -- All handling of smalls for multiplication and division is handled
4229 -- by the front end (mod and rem result only from expansion). Gigi
4230 -- thus never needs to worry about small values (for other operators
4231 -- operating on fixed-point, e.g. addition, the small value does not
4232 -- have any semantic effect anyway, these are always integer operations.
4233
4234 -- Gigi restriction: For all operators taking Boolean operands, the
4235 -- type is always Standard.Boolean. The expander inserts the required
4236 -- conversion operations where needed to ensure this is the case.
4237
4238 -- N_Op_And
4239 -- Sloc points to AND
4240 -- Do_Length_Check (Flag4-Sem)
4241 -- plus fields for binary operator
4242 -- plus fields for expression
4243
4244 -- N_Op_Or
4245 -- Sloc points to OR
4246 -- Do_Length_Check (Flag4-Sem)
4247 -- plus fields for binary operator
4248 -- plus fields for expression
4249
4250 -- N_Op_Xor
4251 -- Sloc points to XOR
4252 -- Do_Length_Check (Flag4-Sem)
4253 -- plus fields for binary operator
4254 -- plus fields for expression
4255
4256 -- N_Op_Eq
4257 -- Sloc points to =
4258 -- plus fields for binary operator
4259 -- plus fields for expression
4260
4261 -- N_Op_Ne
4262 -- Sloc points to /=
4263 -- plus fields for binary operator
4264 -- plus fields for expression
4265
4266 -- N_Op_Lt
4267 -- Sloc points to <
4268 -- plus fields for binary operator
4269 -- plus fields for expression
4270
4271 -- N_Op_Le
4272 -- Sloc points to <=
4273 -- plus fields for binary operator
4274 -- plus fields for expression
4275
4276 -- N_Op_Gt
4277 -- Sloc points to >
4278 -- plus fields for binary operator
4279 -- plus fields for expression
4280
4281 -- N_Op_Ge
4282 -- Sloc points to >=
4283 -- plus fields for binary operator
4284 -- plus fields for expression
4285
4286 -- N_Op_Add
4287 -- Sloc points to + (binary)
4288 -- plus fields for binary operator
4289 -- plus fields for expression
4290
4291 -- N_Op_Subtract
4292 -- Sloc points to - (binary)
4293 -- plus fields for binary operator
4294 -- plus fields for expression
4295
4296 -- N_Op_Concat
4297 -- Sloc points to &
4298 -- Is_Component_Left_Opnd (Flag13-Sem)
4299 -- Is_Component_Right_Opnd (Flag14-Sem)
4300 -- plus fields for binary operator
4301 -- plus fields for expression
4302
4303 -- N_Op_Multiply
4304 -- Sloc points to *
4305 -- Treat_Fixed_As_Integer (Flag14-Sem)
4306 -- Rounded_Result (Flag18-Sem)
4307 -- plus fields for binary operator
4308 -- plus fields for expression
4309
4310 -- N_Op_Divide
4311 -- Sloc points to /
4312 -- Treat_Fixed_As_Integer (Flag14-Sem)
4313 -- Do_Division_Check (Flag13-Sem)
4314 -- Rounded_Result (Flag18-Sem)
4315 -- plus fields for binary operator
4316 -- plus fields for expression
4317
4318 -- N_Op_Mod
4319 -- Sloc points to MOD
4320 -- Treat_Fixed_As_Integer (Flag14-Sem)
4321 -- Do_Division_Check (Flag13-Sem)
4322 -- plus fields for binary operator
4323 -- plus fields for expression
4324
4325 -- N_Op_Rem
4326 -- Sloc points to REM
4327 -- Treat_Fixed_As_Integer (Flag14-Sem)
4328 -- Do_Division_Check (Flag13-Sem)
4329 -- plus fields for binary operator
4330 -- plus fields for expression
4331
4332 -- N_Op_Expon
4333 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
4334 -- Sloc points to **
4335 -- plus fields for binary operator
4336 -- plus fields for expression
4337
4338 -- N_Op_Plus
4339 -- Sloc points to + (unary)
4340 -- plus fields for unary operator
4341 -- plus fields for expression
4342
4343 -- N_Op_Minus
4344 -- Sloc points to - (unary)
4345 -- plus fields for unary operator
4346 -- plus fields for expression
4347
4348 -- N_Op_Abs
4349 -- Sloc points to ABS
4350 -- plus fields for unary operator
4351 -- plus fields for expression
4352
4353 -- N_Op_Not
4354 -- Sloc points to NOT
4355 -- plus fields for unary operator
4356 -- plus fields for expression
4357
4358 -- See also shift operators in section B.2
4359
4360 -- Note on fixed-point operations passed to Gigi: For adding operators,
4361 -- the semantics is to treat these simply as integer operations, with
4362 -- the small values being ignored (the bounds are already stored in
4363 -- units of small, so that constraint checking works as usual). For the
4364 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
4365 -- point operands if the Treat_Fixed_As_Integer flag is set and will
4366 -- thus treat these nodes in identical manner, ignoring small values.
4367
4368 -- Note on equality/inequality tests for records. In the expanded tree,
4369 -- record comparisons are always expanded to be a series of component
4370 -- comparisons, so the back end will never see an equality or inequality
4371 -- operation with operands of a record type.
4372
4373 -- Note on overflow handling: When the overflow checking mode is set to
4374 -- MINIMIZED or ELIMINATED, nodes for signed arithmetic operations may
4375 -- be modified to use a larger type for the operands and result. In
4376 -- the case where the computed range exceeds that of Long_Long_Integer,
4377 -- and we are running in ELIMINATED mode, the operator node will be
4378 -- changed to be a call to the appropriate routine in System.Bignums.
4379
4380 -- Note: In Modify_Tree_For_C mode, we do not generate an N_Op_Mod node
4381 -- for signed integer types (since there is no equivalent operator in
4382 -- C). Instead we rewrite such an operation in terms of REM (which is
4383 -- % in C) and other C-available operators.
4384
4385 ------------------------------------
4386 -- 4.5.7 Conditional Expressions --
4387 ------------------------------------
4388
4389 -- CONDITIONAL_EXPRESSION ::= IF_EXPRESSION | CASE_EXPRESSION
4390
4391 --------------------------
4392 -- 4.5.7 If Expression --
4393 ----------------------------
4394
4395 -- IF_EXPRESSION ::=
4396 -- if CONDITION then DEPENDENT_EXPRESSION
4397 -- {elsif CONDITION then DEPENDENT_EXPRESSION}
4398 -- [else DEPENDENT_EXPRESSION]
4399
4400 -- DEPENDENT_EXPRESSION ::= EXPRESSION
4401
4402 -- Note: if we have (IF x1 THEN x2 ELSIF x3 THEN x4 ELSE x5) then it
4403 -- is represented as (IF x1 THEN x2 ELSE (IF x3 THEN x4 ELSE x5)) and
4404 -- the Is_Elsif flag is set on the inner if expression.
4405
4406 -- N_If_Expression
4407 -- Sloc points to IF or ELSIF keyword
4408 -- Expressions (List1)
4409 -- Then_Actions (List2-Sem)
4410 -- Else_Actions (List3-Sem)
4411 -- Is_Elsif (Flag13) (set if comes from ELSIF)
4412 -- Do_Overflow_Check (Flag17-Sem)
4413 -- plus fields for expression
4414
4415 -- Expressions here is a three-element list, whose first element is the
4416 -- condition, the second element is the dependent expression after THEN
4417 -- and the third element is the dependent expression after the ELSE
4418 -- (explicitly set to True if missing).
4419
4420 -- Note: the Then_Actions and Else_Actions fields are always set to
4421 -- No_List in the tree passed to the back end. These are used only
4422 -- for temporary processing purposes in the expander. Even though they
4423 -- are semantic fields, their parent pointers are set because analysis
4424 -- of actions nodes in those lists may generate additional actions that
4425 -- need to know their insertion point (for example for the creation of
4426 -- transient scopes).
4427
4428 -- Note: in the tree passed to the back end, if the result type is
4429 -- an unconstrained array, the if expression can only appears in the
4430 -- initializing expression of an object declaration (this avoids the
4431 -- back end having to create a variable length temporary on the fly).
4432
4433 ----------------------------
4434 -- 4.5.7 Case Expression --
4435 ----------------------------
4436
4437 -- CASE_EXPRESSION ::=
4438 -- case SELECTING_EXPRESSION is
4439 -- CASE_EXPRESSION_ALTERNATIVE
4440 -- {,CASE_EXPRESSION_ALTERNATIVE}
4441
4442 -- Note that the Alternatives cannot include pragmas (this contrasts
4443 -- with the situation of case statements where pragmas are allowed).
4444
4445 -- N_Case_Expression
4446 -- Sloc points to CASE
4447 -- Expression (Node3) (the selecting expression)
4448 -- Alternatives (List4) (the case expression alternatives)
4449 -- Do_Overflow_Check (Flag17-Sem)
4450
4451 ----------------------------------------
4452 -- 4.5.7 Case Expression Alternative --
4453 ----------------------------------------
4454
4455 -- CASE_EXPRESSION_ALTERNATIVE ::=
4456 -- when DISCRETE_CHOICE_LIST =>
4457 -- DEPENDENT_EXPRESSION
4458
4459 -- N_Case_Expression_Alternative
4460 -- Sloc points to WHEN
4461 -- Actions (List1)
4462 -- Discrete_Choices (List4)
4463 -- Expression (Node3)
4464 -- Has_SP_Choice (Flag15-Sem)
4465
4466 -- Note: The Actions field temporarily holds any actions associated with
4467 -- evaluation of the Expression. During expansion of the case expression
4468 -- these actions are wrapped into an N_Expressions_With_Actions node
4469 -- replacing the original expression.
4470
4471 -- Note: this node never appears in the tree passed to the back end,
4472 -- since the expander converts case expressions into case statements.
4473
4474 ---------------------------------
4475 -- 4.5.9 Quantified Expression --
4476 ---------------------------------
4477
4478 -- QUANTIFIED_EXPRESSION ::=
4479 -- for QUANTIFIER LOOP_PARAMETER_SPECIFICATION => PREDICATE
4480 -- | for QUANTIFIER ITERATOR_SPECIFICATION => PREDICATE
4481 --
4482 -- QUANTIFIER ::= all | some
4483
4484 -- At most one of (Iterator_Specification, Loop_Parameter_Specification)
4485 -- is present at a time, in which case the other one is empty.
4486
4487 -- N_Quantified_Expression
4488 -- Sloc points to FOR
4489 -- Iterator_Specification (Node2)
4490 -- Loop_Parameter_Specification (Node4)
4491 -- Condition (Node1)
4492 -- All_Present (Flag15)
4493
4494 --------------------------
4495 -- 4.6 Type Conversion --
4496 --------------------------
4497
4498 -- TYPE_CONVERSION ::=
4499 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
4500
4501 -- In the (NAME) case, the name is stored as the expression
4502
4503 -- Note: the parser never generates a type conversion node, since it
4504 -- looks like an indexed component which is generated by preference.
4505 -- The semantic pass must correct this misidentification.
4506
4507 -- Gigi handles conversions that involve no change in the root type,
4508 -- and also all conversions from integer to floating-point types.
4509 -- Conversions from floating-point to integer are only handled in
4510 -- the case where Float_Truncate flag set. Other conversions from
4511 -- floating-point to integer (involving rounding) and all conversions
4512 -- involving fixed-point types are handled by the expander.
4513
4514 -- Sprint syntax if Float_Truncate set: X^(Y)
4515 -- Sprint syntax if Conversion_OK set X?(Y)
4516 -- Sprint syntax if both flags set X?^(Y)
4517
4518 -- Note: If either the operand or result type is fixed-point, Gigi will
4519 -- only see a type conversion node with Conversion_OK set. The front end
4520 -- takes care of all handling of small's for fixed-point conversions.
4521
4522 -- N_Type_Conversion
4523 -- Sloc points to first token of subtype mark
4524 -- Subtype_Mark (Node4)
4525 -- Expression (Node3)
4526 -- Do_Discriminant_Check (Flag1-Sem)
4527 -- Do_Length_Check (Flag4-Sem)
4528 -- Float_Truncate (Flag11-Sem)
4529 -- Do_Tag_Check (Flag13-Sem)
4530 -- Conversion_OK (Flag14-Sem)
4531 -- Do_Overflow_Check (Flag17-Sem)
4532 -- Rounded_Result (Flag18-Sem)
4533 -- plus fields for expression
4534
4535 -- Note: if a range check is required, then the Do_Range_Check flag
4536 -- is set in the Expression with the check being done against the
4537 -- target type range (after the base type conversion, if any).
4538
4539 -------------------------------
4540 -- 4.7 Qualified Expression --
4541 -------------------------------
4542
4543 -- QUALIFIED_EXPRESSION ::=
4544 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
4545
4546 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
4547 -- the expression, so the Expression field of this node always points
4548 -- to a parenthesized expression in this case (i.e. Paren_Count will
4549 -- always be non-zero for the referenced expression if it is not an
4550 -- aggregate).
4551
4552 -- N_Qualified_Expression
4553 -- Sloc points to apostrophe
4554 -- Subtype_Mark (Node4)
4555 -- Expression (Node3) expression or aggregate
4556 -- plus fields for expression
4557 -- Is_Qualified_Universal_Literal (Flag4-Sem)
4558
4559 --------------------
4560 -- 4.8 Allocator --
4561 --------------------
4562
4563 -- ALLOCATOR ::=
4564 -- new [SUBPOOL_SPECIFICATION] SUBTYPE_INDICATION
4565 -- | new [SUBPOOL_SPECIFICATION] QUALIFIED_EXPRESSION
4566 --
4567 -- SUBPOOL_SPECIFICATION ::= (subpool_handle_NAME)
4568
4569 -- Sprint syntax (when storage pool present)
4570 -- new xxx (storage_pool = pool)
4571 -- or
4572 -- new (subpool) xxx (storage_pool = pool)
4573
4574 -- N_Allocator
4575 -- Sloc points to NEW
4576 -- Expression (Node3) subtype indication or qualified expression
4577 -- Subpool_Handle_Name (Node4) (set to Empty if not present)
4578 -- Storage_Pool (Node1-Sem)
4579 -- Procedure_To_Call (Node2-Sem)
4580 -- Null_Exclusion_Present (Flag11)
4581 -- No_Initialization (Flag13-Sem)
4582 -- Is_Static_Coextension (Flag14-Sem)
4583 -- Do_Storage_Check (Flag17-Sem)
4584 -- Is_Dynamic_Coextension (Flag18-Sem)
4585 -- plus fields for expression
4586
4587 -- Note: like all nodes, the N_Allocator has the Comes_From_Source flag.
4588 -- This flag has a special function in conjunction with the restriction
4589 -- No_Implicit_Heap_Allocations, which will be triggered if this flag
4590 -- is not set. This means that if a source allocator is replaced with
4591 -- a constructed allocator, the Comes_From_Source flag should be copied
4592 -- to the newly created allocator.
4593
4594 ---------------------------------
4595 -- 5.1 Sequence Of Statements --
4596 ---------------------------------
4597
4598 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
4599
4600 -- Note: Although the parser will not accept a declaration as a
4601 -- statement, the semantic analyzer may insert declarations (e.g.
4602 -- declarations of implicit types needed for execution of other
4603 -- statements) into a sequence of statements, so the code generator
4604 -- should be prepared to accept a declaration where a statement is
4605 -- expected. Note also that pragmas can appear as statements.
4606
4607 --------------------
4608 -- 5.1 Statement --
4609 --------------------
4610
4611 -- STATEMENT ::=
4612 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
4613
4614 -- There is no explicit node in the tree for a statement. Instead, the
4615 -- individual statement appears directly. Labels are treated as a
4616 -- kind of statement, i.e. they are linked into a statement list at
4617 -- the point they appear, so the labeled statement appears following
4618 -- the label or labels in the statement list.
4619
4620 ---------------------------
4621 -- 5.1 Simple Statement --
4622 ---------------------------
4623
4624 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
4625 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
4626 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
4627 -- | SIMPLE_RETURN_STATEMENT | ENTRY_CALL_STATEMENT
4628 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
4629 -- | ABORT_STATEMENT | RAISE_STATEMENT
4630 -- | CODE_STATEMENT
4631
4632 -----------------------------
4633 -- 5.1 Compound Statement --
4634 -----------------------------
4635
4636 -- COMPOUND_STATEMENT ::=
4637 -- IF_STATEMENT | CASE_STATEMENT
4638 -- | LOOP_STATEMENT | BLOCK_STATEMENT
4639 -- | EXTENDED_RETURN_STATEMENT
4640 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
4641
4642 -------------------------
4643 -- 5.1 Null Statement --
4644 -------------------------
4645
4646 -- NULL_STATEMENT ::= null;
4647
4648 -- N_Null_Statement
4649 -- Sloc points to NULL
4650
4651 ----------------
4652 -- 5.1 Label --
4653 ----------------
4654
4655 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
4656
4657 -- Note that the occurrence of a label is not a defining identifier,
4658 -- but rather a referencing occurrence. The defining occurrence is
4659 -- in the implicit label declaration which occurs in the innermost
4660 -- enclosing block.
4661
4662 -- N_Label
4663 -- Sloc points to <<
4664 -- Identifier (Node1) direct name of statement identifier
4665 -- Exception_Junk (Flag8-Sem)
4666
4667 -- Note: Before Ada 2012, a label is always followed by a statement,
4668 -- and this is true in the tree even in Ada 2012 mode (the parser
4669 -- inserts a null statement marked with Comes_From_Source False).
4670
4671 -------------------------------
4672 -- 5.1 Statement Identifier --
4673 -------------------------------
4674
4675 -- STATEMENT_IDENTIFIER ::= DIRECT_NAME
4676
4677 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
4678 -- (not an OPERATOR_SYMBOL)
4679
4680 -------------------------------
4681 -- 5.2 Assignment Statement --
4682 -------------------------------
4683
4684 -- ASSIGNMENT_STATEMENT ::=
4685 -- variable_NAME := EXPRESSION;
4686
4687 -- N_Assignment_Statement
4688 -- Sloc points to :=
4689 -- Name (Node2)
4690 -- Expression (Node3)
4691 -- Do_Discriminant_Check (Flag1-Sem)
4692 -- Do_Tag_Check (Flag13-Sem)
4693 -- Do_Length_Check (Flag4-Sem)
4694 -- Forwards_OK (Flag5-Sem)
4695 -- Backwards_OK (Flag6-Sem)
4696 -- No_Ctrl_Actions (Flag7-Sem)
4697 -- Componentwise_Assignment (Flag14-Sem)
4698 -- Suppress_Assignment_Checks (Flag18-Sem)
4699
4700 -- Note: if a range check is required, then the Do_Range_Check flag
4701 -- is set in the Expression (right hand side), with the check being
4702 -- done against the type of the Name (left hand side).
4703
4704 -- Note: the back end places some restrictions on the form of the
4705 -- Expression field. If the object being assigned to is Atomic, then
4706 -- the Expression may not have the form of an aggregate (since this
4707 -- might cause the back end to generate separate assignments). In this
4708 -- case the front end must generate an extra temporary and initialize
4709 -- this temporary as required (the temporary itself is not atomic).
4710
4711 -----------------------
4712 -- 5.3 If Statement --
4713 -----------------------
4714
4715 -- IF_STATEMENT ::=
4716 -- if CONDITION then
4717 -- SEQUENCE_OF_STATEMENTS
4718 -- {elsif CONDITION then
4719 -- SEQUENCE_OF_STATEMENTS}
4720 -- [else
4721 -- SEQUENCE_OF_STATEMENTS]
4722 -- end if;
4723
4724 -- Gigi restriction: This expander ensures that the type of the
4725 -- Condition fields is always Standard.Boolean, even if the type
4726 -- in the source is some non-standard boolean type.
4727
4728 -- N_If_Statement
4729 -- Sloc points to IF
4730 -- Condition (Node1)
4731 -- Then_Statements (List2)
4732 -- Elsif_Parts (List3) (set to No_List if none present)
4733 -- Else_Statements (List4) (set to No_List if no else part present)
4734 -- End_Span (Uint5) (set to Uint_0 if expander generated)
4735 -- From_Conditional_Expression (Flag1-Sem)
4736
4737 -- N_Elsif_Part
4738 -- Sloc points to ELSIF
4739 -- Condition (Node1)
4740 -- Then_Statements (List2)
4741 -- Condition_Actions (List3-Sem)
4742
4743 --------------------
4744 -- 5.3 Condition --
4745 --------------------
4746
4747 -- CONDITION ::= boolean_EXPRESSION
4748
4749 -------------------------
4750 -- 5.4 Case Statement --
4751 -------------------------
4752
4753 -- CASE_STATEMENT ::=
4754 -- case EXPRESSION is
4755 -- CASE_STATEMENT_ALTERNATIVE
4756 -- {CASE_STATEMENT_ALTERNATIVE}
4757 -- end case;
4758
4759 -- Note: the Alternatives can contain pragmas. These only occur at
4760 -- the start of the list, since any pragmas occurring after the first
4761 -- alternative are absorbed into the corresponding statement sequence.
4762
4763 -- N_Case_Statement
4764 -- Sloc points to CASE
4765 -- Expression (Node3)
4766 -- Alternatives (List4)
4767 -- End_Span (Uint5) (set to Uint_0 if expander generated)
4768 -- From_Conditional_Expression (Flag1-Sem)
4769
4770 -- Note: Before Ada 2012, a pragma in a statement sequence is always
4771 -- followed by a statement, and this is true in the tree even in Ada
4772 -- 2012 mode (the parser inserts a null statement marked with the flag
4773 -- Comes_From_Source False).
4774
4775 -------------------------------------
4776 -- 5.4 Case Statement Alternative --
4777 -------------------------------------
4778
4779 -- CASE_STATEMENT_ALTERNATIVE ::=
4780 -- when DISCRETE_CHOICE_LIST =>
4781 -- SEQUENCE_OF_STATEMENTS
4782
4783 -- N_Case_Statement_Alternative
4784 -- Sloc points to WHEN
4785 -- Discrete_Choices (List4)
4786 -- Statements (List3)
4787 -- Has_SP_Choice (Flag15-Sem)
4788
4789 -- Note: in the list of Discrete_Choices, the tree passed to the back
4790 -- end does not have choice entries corresponding to names of statically
4791 -- predicated subtypes. Such entries are always expanded out to the list
4792 -- of equivalent values or ranges. The ASIS tree generated in -gnatct
4793 -- mode does not have this expansion, and has the original choices.
4794
4795 -------------------------
4796 -- 5.5 Loop Statement --
4797 -------------------------
4798
4799 -- LOOP_STATEMENT ::=
4800 -- [loop_STATEMENT_IDENTIFIER :]
4801 -- [ITERATION_SCHEME] loop
4802 -- SEQUENCE_OF_STATEMENTS
4803 -- end loop [loop_IDENTIFIER];
4804
4805 -- Note: The occurrence of a loop label is not a defining identifier
4806 -- but rather a referencing occurrence. The defining occurrence is in
4807 -- the implicit label declaration which occurs in the innermost
4808 -- enclosing block.
4809
4810 -- Note: there is always a loop statement identifier present in the
4811 -- tree, even if none was given in the source. In the case where no loop
4812 -- identifier is given in the source, the parser creates a name of the
4813 -- form _Loop_n, where n is a decimal integer (the two underlines ensure
4814 -- that the loop names created in this manner do not conflict with any
4815 -- user defined identifiers), and the flag Has_Created_Identifier is set
4816 -- to True. The only exception to the rule that all loop statement nodes
4817 -- have identifiers occurs for loops constructed by the expander, and
4818 -- the semantic analyzer will create and supply dummy loop identifiers
4819 -- in these cases.
4820
4821 -- N_Loop_Statement
4822 -- Sloc points to LOOP
4823 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
4824 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
4825 -- Statements (List3)
4826 -- End_Label (Node4)
4827 -- Has_Created_Identifier (Flag15)
4828 -- Is_Null_Loop (Flag16)
4829 -- Suppress_Loop_Warnings (Flag17)
4830
4831 -- Note: the parser fills in the Identifier field if there is an
4832 -- explicit loop identifier. Otherwise the parser leaves this field
4833 -- set to Empty, and then the semantic processing for a loop statement
4834 -- creates an identifier, setting the Has_Created_Identifier flag to
4835 -- True. So after semantic analysis, the Identifier is always set,
4836 -- referencing an identifier whose entity has an Ekind of E_Loop.
4837
4838 ---------------------------
4839 -- 5.5 Iteration Scheme --
4840 ---------------------------
4841
4842 -- ITERATION_SCHEME ::=
4843 -- while CONDITION
4844 -- | for LOOP_PARAMETER_SPECIFICATION
4845 -- | for ITERATOR_SPECIFICATION
4846
4847 -- At most one of (Iterator_Specification, Loop_Parameter_Specification)
4848 -- is present at a time, in which case the other one is empty. Both are
4849 -- empty in the case of a WHILE loop.
4850
4851 -- Gigi restriction: The expander ensures that the type of the Condition
4852 -- field is always Standard.Boolean, even if the type in the source is
4853 -- some non-standard boolean type.
4854
4855 -- N_Iteration_Scheme
4856 -- Sloc points to WHILE or FOR
4857 -- Condition (Node1) (set to Empty if FOR case)
4858 -- Condition_Actions (List3-Sem)
4859 -- Iterator_Specification (Node2) (set to Empty if WHILE case)
4860 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
4861
4862 ---------------------------------------
4863 -- 5.5 Loop Parameter Specification --
4864 ---------------------------------------
4865
4866 -- LOOP_PARAMETER_SPECIFICATION ::=
4867 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
4868
4869 -- N_Loop_Parameter_Specification
4870 -- Sloc points to first identifier
4871 -- Defining_Identifier (Node1)
4872 -- Reverse_Present (Flag15)
4873 -- Discrete_Subtype_Definition (Node4)
4874
4875 -----------------------------------
4876 -- 5.5.1 Iterator Specification --
4877 -----------------------------------
4878
4879 -- ITERATOR_SPECIFICATION ::=
4880 -- DEFINING_IDENTIFIER in [reverse] NAME
4881 -- | DEFINING_IDENTIFIER [: SUBTYPE_INDICATION] of [reverse] NAME
4882
4883 -- N_Iterator_Specification
4884 -- Sloc points to defining identifier
4885 -- Defining_Identifier (Node1)
4886 -- Name (Node2)
4887 -- Reverse_Present (Flag15)
4888 -- Of_Present (Flag16)
4889 -- Subtype_Indication (Node5)
4890
4891 -- Note: The Of_Present flag distinguishes the two forms
4892
4893 --------------------------
4894 -- 5.6 Block Statement --
4895 --------------------------
4896
4897 -- BLOCK_STATEMENT ::=
4898 -- [block_STATEMENT_IDENTIFIER:]
4899 -- [declare
4900 -- DECLARATIVE_PART]
4901 -- begin
4902 -- HANDLED_SEQUENCE_OF_STATEMENTS
4903 -- end [block_IDENTIFIER];
4904
4905 -- Note that the occurrence of a block identifier is not a defining
4906 -- identifier, but rather a referencing occurrence. The defining
4907 -- occurrence is an E_Block entity declared by the implicit label
4908 -- declaration which occurs in the innermost enclosing block statement
4909 -- or body; the block identifier denotes that E_Block.
4910
4911 -- For block statements that come from source code, there is always a
4912 -- block statement identifier present in the tree, denoting an E_Block.
4913 -- In the case where no block identifier is given in the source,
4914 -- the parser creates a name of the form B_n, where n is a decimal
4915 -- integer, and the flag Has_Created_Identifier is set to True. Blocks
4916 -- constructed by the expander usually have no identifier, and no
4917 -- corresponding entity.
4918
4919 -- Note: the block statement created for an extended return statement
4920 -- has an entity, and this entity is an E_Return_Statement, rather than
4921 -- the usual E_Block.
4922
4923 -- Note: Exception_Junk is set for the wrapping blocks created during
4924 -- local raise optimization (Exp_Ch11.Expand_Local_Exception_Handlers).
4925
4926 -- Note: from a control flow viewpoint, a block statement defines an
4927 -- extended basic block, i.e. the entry of the block dominates every
4928 -- statement in the sequence. When generating new statements with
4929 -- exception handlers in the expander at the end of a sequence that
4930 -- comes from source code, it can be necessary to wrap them all in a
4931 -- block statement in order to expose the implicit control flow to
4932 -- gigi and thus prevent it from issuing bogus control flow warnings.
4933
4934 -- N_Block_Statement
4935 -- Sloc points to DECLARE or BEGIN
4936 -- Identifier (Node1) block direct name (set to Empty if not present)
4937 -- Declarations (List2) (set to No_List if no DECLARE part)
4938 -- Handled_Statement_Sequence (Node4)
4939 -- Cleanup_Actions (List5-Sem)
4940 -- Is_Task_Master (Flag5-Sem)
4941 -- Activation_Chain_Entity (Node3-Sem)
4942 -- Has_Created_Identifier (Flag15)
4943 -- Is_Task_Allocation_Block (Flag6)
4944 -- Is_Asynchronous_Call_Block (Flag7)
4945 -- Exception_Junk (Flag8-Sem)
4946 -- Is_Finalization_Wrapper (Flag9-Sem)
4947
4948 -------------------------
4949 -- 5.7 Exit Statement --
4950 -------------------------
4951
4952 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
4953
4954 -- Gigi restriction: The expander ensures that the type of the Condition
4955 -- field is always Standard.Boolean, even if the type in the source is
4956 -- some non-standard boolean type.
4957
4958 -- N_Exit_Statement
4959 -- Sloc points to EXIT
4960 -- Name (Node2) (set to Empty if no loop name present)
4961 -- Condition (Node1) (set to Empty if no WHEN part present)
4962 -- Next_Exit_Statement (Node3-Sem): Next exit on chain
4963
4964 -------------------------
4965 -- 5.9 Goto Statement --
4966 -------------------------
4967
4968 -- GOTO_STATEMENT ::= goto label_NAME;
4969
4970 -- N_Goto_Statement
4971 -- Sloc points to GOTO
4972 -- Name (Node2)
4973 -- Exception_Junk (Flag8-Sem)
4974
4975 ---------------------------------
4976 -- 6.1 Subprogram Declaration --
4977 ---------------------------------
4978
4979 -- SUBPROGRAM_DECLARATION ::=
4980 -- SUBPROGRAM_SPECIFICATION
4981 -- [ASPECT_SPECIFICATIONS];
4982
4983 -- N_Subprogram_Declaration
4984 -- Sloc points to FUNCTION or PROCEDURE
4985 -- Specification (Node1)
4986 -- Body_To_Inline (Node3-Sem)
4987 -- Corresponding_Body (Node5-Sem)
4988 -- Parent_Spec (Node4-Sem)
4989 -- Is_Entry_Barrier_Function (Flag8-Sem)
4990 -- Is_Task_Body_Procedure (Flag1-Sem)
4991
4992 ------------------------------------------
4993 -- 6.1 Abstract Subprogram Declaration --
4994 ------------------------------------------
4995
4996 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
4997 -- SUBPROGRAM_SPECIFICATION is abstract
4998 -- [ASPECT_SPECIFICATIONS];
4999
5000 -- N_Abstract_Subprogram_Declaration
5001 -- Sloc points to ABSTRACT
5002 -- Specification (Node1)
5003
5004 -----------------------------------
5005 -- 6.1 Subprogram Specification --
5006 -----------------------------------
5007
5008 -- SUBPROGRAM_SPECIFICATION ::=
5009 -- [[not] overriding]
5010 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
5011 -- | [[not] overriding]
5012 -- function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
5013
5014 -- Note: there are no separate nodes for the profiles, instead the
5015 -- information appears directly in the following nodes.
5016
5017 -- N_Function_Specification
5018 -- Sloc points to FUNCTION
5019 -- Defining_Unit_Name (Node1) (the designator)
5020 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5021 -- Null_Exclusion_Present (Flag11)
5022 -- Result_Definition (Node4) for result subtype
5023 -- Generic_Parent (Node5-Sem)
5024 -- Must_Override (Flag14) set if overriding indicator present
5025 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5026
5027 -- N_Procedure_Specification
5028 -- Sloc points to PROCEDURE
5029 -- Defining_Unit_Name (Node1)
5030 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5031 -- Generic_Parent (Node5-Sem)
5032 -- Null_Present (Flag13) set for null procedure case (Ada 2005 feature)
5033 -- Must_Override (Flag14) set if overriding indicator present
5034 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5035
5036 -- Note: overriding indicator is an Ada 2005 feature
5037
5038 ---------------------
5039 -- 6.1 Designator --
5040 ---------------------
5041
5042 -- DESIGNATOR ::=
5043 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
5044
5045 -- Designators that are simply identifiers or operator symbols appear
5046 -- directly in the tree in this form. The following node is used only
5047 -- in the case where the designator has a parent unit name component.
5048
5049 -- N_Designator
5050 -- Sloc points to period
5051 -- Name (Node2) holds the parent unit name
5052 -- Identifier (Node1)
5053
5054 -- Note: Name is always non-Empty, since this node is only used for the
5055 -- case where a parent library unit package name is present.
5056
5057 -- Note that the identifier can also be an operator symbol here
5058
5059 ------------------------------
5060 -- 6.1 Defining Designator --
5061 ------------------------------
5062
5063 -- DEFINING_DESIGNATOR ::=
5064 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
5065
5066 -------------------------------------
5067 -- 6.1 Defining Program Unit Name --
5068 -------------------------------------
5069
5070 -- DEFINING_PROGRAM_UNIT_NAME ::=
5071 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
5072
5073 -- The parent unit name is present only in the case of a child unit name
5074 -- (permissible only for Ada 95 for a library level unit, i.e. a unit
5075 -- at scope level one). If no such name is present, the defining program
5076 -- unit name is represented simply as the defining identifier. In the
5077 -- child unit case, the following node is used to represent the child
5078 -- unit name.
5079
5080 -- N_Defining_Program_Unit_Name
5081 -- Sloc points to period
5082 -- Name (Node2) holds the parent unit name
5083 -- Defining_Identifier (Node1)
5084
5085 -- Note: Name is always non-Empty, since this node is only used for the
5086 -- case where a parent unit name is present.
5087
5088 --------------------------
5089 -- 6.1 Operator Symbol --
5090 --------------------------
5091
5092 -- OPERATOR_SYMBOL ::= STRING_LITERAL
5093
5094 -- Note: the fields of the N_Operator_Symbol node are laid out to match
5095 -- the corresponding fields of an N_Character_Literal node. This allows
5096 -- easy conversion of the operator symbol node into a character literal
5097 -- node in the case where a string constant of the form of an operator
5098 -- symbol is scanned out as such, but turns out semantically to be a
5099 -- string literal that is not an operator. For details see Sinfo.CN.
5100 -- Change_Operator_Symbol_To_String_Literal.
5101
5102 -- N_Operator_Symbol
5103 -- Sloc points to literal
5104 -- Chars (Name1) contains the Name_Id for the operator symbol
5105 -- Strval (Str3) Id of string value. This is used if the operator
5106 -- symbol turns out to be a normal string after all.
5107 -- Entity (Node4-Sem)
5108 -- Associated_Node (Node4-Sem)
5109 -- Has_Private_View (Flag11-Sem) set in generic units.
5110 -- Etype (Node5-Sem)
5111
5112 -- Note: the Strval field may be set to No_String for generated
5113 -- operator symbols that are known not to be string literals
5114 -- semantically.
5115
5116 -----------------------------------
5117 -- 6.1 Defining Operator Symbol --
5118 -----------------------------------
5119
5120 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
5121
5122 -- A defining operator symbol is an entity, which has additional
5123 -- fields depending on the setting of the Ekind field. These
5124 -- additional fields are defined (and access subprograms declared)
5125 -- in package Einfo.
5126
5127 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
5128 -- are deliberately layed out to match the layout of fields in an
5129 -- ordinary N_Operator_Symbol node allowing for easy alteration of
5130 -- an operator symbol node into a defining operator symbol node.
5131 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
5132 -- for further details.
5133
5134 -- N_Defining_Operator_Symbol
5135 -- Sloc points to literal
5136 -- Chars (Name1) contains the Name_Id for the operator symbol
5137 -- Next_Entity (Node2-Sem)
5138 -- Scope (Node3-Sem)
5139 -- Etype (Node5-Sem)
5140
5141 ----------------------------
5142 -- 6.1 Parameter Profile --
5143 ----------------------------
5144
5145 -- PARAMETER_PROFILE ::= [FORMAL_PART]
5146
5147 ---------------------------------------
5148 -- 6.1 Parameter and Result Profile --
5149 ---------------------------------------
5150
5151 -- PARAMETER_AND_RESULT_PROFILE ::=
5152 -- [FORMAL_PART] return [NULL_EXCLUSION] SUBTYPE_MARK
5153 -- | [FORMAL_PART] return ACCESS_DEFINITION
5154
5155 -- There is no explicit node in the tree for a parameter and result
5156 -- profile. Instead the information appears directly in the parent.
5157
5158 ----------------------
5159 -- 6.1 Formal Part --
5160 ----------------------
5161
5162 -- FORMAL_PART ::=
5163 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
5164
5165 ----------------------------------
5166 -- 6.1 Parameter Specification --
5167 ----------------------------------
5168
5169 -- PARAMETER_SPECIFICATION ::=
5170 -- DEFINING_IDENTIFIER_LIST : [ALIASED] MODE [NULL_EXCLUSION]
5171 -- SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
5172 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
5173 -- [:= DEFAULT_EXPRESSION]
5174
5175 -- Although the syntax allows multiple identifiers in the list, the
5176 -- semantics is as though successive specifications were given with
5177 -- identical type definition and expression components. To simplify
5178 -- semantic processing, the parser represents a multiple declaration
5179 -- case as a sequence of single Specifications, using the More_Ids and
5180 -- Prev_Ids flags to preserve the original source form as described
5181 -- in the section on "Handling of Defining Identifier Lists".
5182
5183 -- ALIASED can only be present in Ada 2012 mode
5184
5185 -- N_Parameter_Specification
5186 -- Sloc points to first identifier
5187 -- Defining_Identifier (Node1)
5188 -- Aliased_Present (Flag4)
5189 -- In_Present (Flag15)
5190 -- Out_Present (Flag17)
5191 -- Null_Exclusion_Present (Flag11)
5192 -- Parameter_Type (Node2) subtype mark or access definition
5193 -- Expression (Node3) (set to Empty if no default expression present)
5194 -- Do_Accessibility_Check (Flag13-Sem)
5195 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5196 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5197 -- Default_Expression (Node5-Sem)
5198
5199 ---------------
5200 -- 6.1 Mode --
5201 ---------------
5202
5203 -- MODE ::= [in] | in out | out
5204
5205 -- There is no explicit node in the tree for the Mode. Instead the
5206 -- In_Present and Out_Present flags are set in the parent node to
5207 -- record the presence of keywords specifying the mode.
5208
5209 --------------------------
5210 -- 6.3 Subprogram Body --
5211 --------------------------
5212
5213 -- SUBPROGRAM_BODY ::=
5214 -- SUBPROGRAM_SPECIFICATION [ASPECT_SPECIFICATIONS] is
5215 -- DECLARATIVE_PART
5216 -- begin
5217 -- HANDLED_SEQUENCE_OF_STATEMENTS
5218 -- end [DESIGNATOR];
5219
5220 -- N_Subprogram_Body
5221 -- Sloc points to FUNCTION or PROCEDURE
5222 -- Specification (Node1)
5223 -- Declarations (List2)
5224 -- Handled_Statement_Sequence (Node4)
5225 -- Activation_Chain_Entity (Node3-Sem)
5226 -- Corresponding_Spec (Node5-Sem)
5227 -- Acts_As_Spec (Flag4-Sem)
5228 -- Bad_Is_Detected (Flag15) used only by parser
5229 -- Do_Storage_Check (Flag17-Sem)
5230 -- Is_Entry_Barrier_Function (Flag8-Sem)
5231 -- Is_Protected_Subprogram_Body (Flag7-Sem)
5232 -- Is_Task_Body_Procedure (Flag1-Sem)
5233 -- Is_Task_Master (Flag5-Sem)
5234 -- Was_Originally_Stub (Flag13-Sem)
5235 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
5236 -- Was_Expression_Function (Flag18-Sem)
5237
5238 -------------------------
5239 -- Expression Function --
5240 -------------------------
5241
5242 -- This is an Ada 2012 extension, we put it here for now, to be labeled
5243 -- and put in its proper section when we know exactly where that is.
5244
5245 -- EXPRESSION_FUNCTION ::=
5246 -- FUNCTION SPECIFICATION IS (EXPRESSION)
5247 -- [ASPECT_SPECIFICATIONS];
5248
5249 -- N_Expression_Function
5250 -- Sloc points to FUNCTION
5251 -- Specification (Node1)
5252 -- Expression (Node3)
5253 -- Corresponding_Spec (Node5-Sem)
5254
5255 -----------------------------------
5256 -- 6.4 Procedure Call Statement --
5257 -----------------------------------
5258
5259 -- PROCEDURE_CALL_STATEMENT ::=
5260 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
5261
5262 -- Note: the reason that a procedure call has expression fields is that
5263 -- it semantically resembles an expression, e.g. overloading is allowed
5264 -- and a type is concocted for semantic processing purposes. Certain of
5265 -- these fields, such as Parens are not relevant, but it is easier to
5266 -- just supply all of them together.
5267
5268 -- N_Procedure_Call_Statement
5269 -- Sloc points to first token of name or prefix
5270 -- Name (Node2) stores name or prefix
5271 -- Parameter_Associations (List3) (set to No_List if no
5272 -- actual parameter part)
5273 -- First_Named_Actual (Node4-Sem)
5274 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
5275 -- Do_Tag_Check (Flag13-Sem)
5276 -- No_Elaboration_Check (Flag14-Sem)
5277 -- ABE_Is_Certain (Flag18-Sem)
5278 -- plus fields for expression
5279
5280 -- If any IN parameter requires a range check, then the corresponding
5281 -- argument expression has the Do_Range_Check flag set, and the range
5282 -- check is done against the formal type. Note that this argument
5283 -- expression may appear directly in the Parameter_Associations list,
5284 -- or may be a descendant of an N_Parameter_Association node that
5285 -- appears in this list.
5286
5287 ------------------------
5288 -- 6.4 Function Call --
5289 ------------------------
5290
5291 -- FUNCTION_CALL ::=
5292 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
5293
5294 -- Note: the parser may generate an indexed component node or simply
5295 -- a name node instead of a function call node. The semantic pass must
5296 -- correct this misidentification.
5297
5298 -- N_Function_Call
5299 -- Sloc points to first token of name or prefix
5300 -- Name (Node2) stores name or prefix
5301 -- Parameter_Associations (List3) (set to No_List if no
5302 -- actual parameter part)
5303 -- First_Named_Actual (Node4-Sem)
5304 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
5305 -- No_Side_Effect_Removal (Flag1-Sem)
5306 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
5307 -- Do_Tag_Check (Flag13-Sem)
5308 -- No_Elaboration_Check (Flag14-Sem)
5309 -- ABE_Is_Certain (Flag18-Sem)
5310 -- plus fields for expression
5311
5312 --------------------------------
5313 -- 6.4 Actual Parameter Part --
5314 --------------------------------
5315
5316 -- ACTUAL_PARAMETER_PART ::=
5317 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
5318
5319 --------------------------------
5320 -- 6.4 Parameter Association --
5321 --------------------------------
5322
5323 -- PARAMETER_ASSOCIATION ::=
5324 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
5325
5326 -- Note: the N_Parameter_Association node is built only if a formal
5327 -- parameter selector name is present, otherwise the parameter
5328 -- association appears in the tree simply as the node for the
5329 -- explicit actual parameter.
5330
5331 -- N_Parameter_Association
5332 -- Sloc points to formal parameter
5333 -- Selector_Name (Node2) (always non-Empty)
5334 -- Explicit_Actual_Parameter (Node3)
5335 -- Next_Named_Actual (Node4-Sem)
5336 -- Is_Accessibility_Actual (Flag13-Sem)
5337
5338 ---------------------------
5339 -- 6.4 Actual Parameter --
5340 ---------------------------
5341
5342 -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
5343
5344 ---------------------------
5345 -- 6.5 Return Statement --
5346 ---------------------------
5347
5348 -- SIMPLE_RETURN_STATEMENT ::= return [EXPRESSION];
5349
5350 -- EXTENDED_RETURN_STATEMENT ::=
5351 -- return DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
5352 -- [:= EXPRESSION] [do
5353 -- HANDLED_SEQUENCE_OF_STATEMENTS
5354 -- end return];
5355
5356 -- RETURN_SUBTYPE_INDICATION ::= SUBTYPE_INDICATION | ACCESS_DEFINITION
5357
5358 -- The term "return statement" is defined in 6.5 to mean either a
5359 -- SIMPLE_RETURN_STATEMENT or an EXTENDED_RETURN_STATEMENT. We avoid
5360 -- the use of this term, since it used to mean someting else in earlier
5361 -- versions of Ada.
5362
5363 -- N_Simple_Return_Statement
5364 -- Sloc points to RETURN
5365 -- Return_Statement_Entity (Node5-Sem)
5366 -- Expression (Node3) (set to Empty if no expression present)
5367 -- Storage_Pool (Node1-Sem)
5368 -- Procedure_To_Call (Node2-Sem)
5369 -- Do_Tag_Check (Flag13-Sem)
5370 -- By_Ref (Flag5-Sem)
5371 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
5372
5373 -- Note: Return_Statement_Entity points to an E_Return_Statement
5374
5375 -- If a range check is required, then Do_Range_Check is set on the
5376 -- Expression. The check is against the return subtype of the function.
5377
5378 -- N_Extended_Return_Statement
5379 -- Sloc points to RETURN
5380 -- Return_Statement_Entity (Node5-Sem)
5381 -- Return_Object_Declarations (List3)
5382 -- Handled_Statement_Sequence (Node4) (set to Empty if not present)
5383 -- Storage_Pool (Node1-Sem)
5384 -- Procedure_To_Call (Node2-Sem)
5385 -- Do_Tag_Check (Flag13-Sem)
5386 -- By_Ref (Flag5-Sem)
5387
5388 -- Note: Return_Statement_Entity points to an E_Return_Statement.
5389
5390 -- Note that Return_Object_Declarations is a list containing the
5391 -- N_Object_Declaration -- see comment on this field above.
5392
5393 -- The declared object will have Is_Return_Object = True.
5394
5395 -- There is no such syntactic category as return_object_declaration
5396 -- in the RM. Return_Object_Declarations represents this portion of
5397 -- the syntax for EXTENDED_RETURN_STATEMENT:
5398 -- DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
5399 -- [:= EXPRESSION]
5400
5401 -- There are two entities associated with an extended_return_statement:
5402 -- the Return_Statement_Entity represents the statement itself,
5403 -- and the Defining_Identifier of the Object_Declaration in
5404 -- Return_Object_Declarations represents the object being
5405 -- returned. N_Simple_Return_Statement has only the former.
5406
5407 ------------------------------
5408 -- 7.1 Package Declaration --
5409 ------------------------------
5410
5411 -- PACKAGE_DECLARATION ::=
5412 -- PACKAGE_SPECIFICATION;
5413
5414 -- Note: the activation chain entity for a package spec is used for
5415 -- all tasks declared in the package spec, or in the package body.
5416
5417 -- N_Package_Declaration
5418 -- Sloc points to PACKAGE
5419 -- Specification (Node1)
5420 -- Corresponding_Body (Node5-Sem)
5421 -- Parent_Spec (Node4-Sem)
5422 -- Activation_Chain_Entity (Node3-Sem)
5423
5424 --------------------------------
5425 -- 7.1 Package Specification --
5426 --------------------------------
5427
5428 -- PACKAGE_SPECIFICATION ::=
5429 -- package DEFINING_PROGRAM_UNIT_NAME
5430 -- [ASPECT_SPECIFICATIONS]
5431 -- is
5432 -- {BASIC_DECLARATIVE_ITEM}
5433 -- [private
5434 -- {BASIC_DECLARATIVE_ITEM}]
5435 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
5436
5437 -- N_Package_Specification
5438 -- Sloc points to PACKAGE
5439 -- Defining_Unit_Name (Node1)
5440 -- Visible_Declarations (List2)
5441 -- Private_Declarations (List3) (set to No_List if no private
5442 -- part present)
5443 -- End_Label (Node4)
5444 -- Generic_Parent (Node5-Sem)
5445 -- Limited_View_Installed (Flag18-Sem)
5446
5447 -----------------------
5448 -- 7.1 Package Body --
5449 -----------------------
5450
5451 -- PACKAGE_BODY ::=
5452 -- package body DEFINING_PROGRAM_UNIT_NAME
5453 -- [ASPECT_SPECIFICATIONS]
5454 -- is
5455 -- DECLARATIVE_PART
5456 -- [begin
5457 -- HANDLED_SEQUENCE_OF_STATEMENTS]
5458 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
5459
5460 -- N_Package_Body
5461 -- Sloc points to PACKAGE
5462 -- Defining_Unit_Name (Node1)
5463 -- Declarations (List2)
5464 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
5465 -- Corresponding_Spec (Node5-Sem)
5466 -- Was_Originally_Stub (Flag13-Sem)
5467
5468 -- Note: if a source level package does not contain a handled sequence
5469 -- of statements, then the parser supplies a dummy one with a null
5470 -- sequence of statements. Comes_From_Source will be False in this
5471 -- constructed sequence. The reason we need this is for the End_Label
5472 -- field in the HSS.
5473
5474 -----------------------------------
5475 -- 7.4 Private Type Declaration --
5476 -----------------------------------
5477
5478 -- PRIVATE_TYPE_DECLARATION ::=
5479 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
5480 -- is [[abstract] tagged] [limited] private
5481 -- [ASPECT_SPECIFICATIONS];
5482
5483 -- Note: TAGGED is not permitted in Ada 83 mode
5484
5485 -- N_Private_Type_Declaration
5486 -- Sloc points to TYPE
5487 -- Defining_Identifier (Node1)
5488 -- Discriminant_Specifications (List4) (set to No_List if no
5489 -- discriminant part)
5490 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5491 -- Abstract_Present (Flag4)
5492 -- Tagged_Present (Flag15)
5493 -- Limited_Present (Flag17)
5494
5495 ----------------------------------------
5496 -- 7.4 Private Extension Declaration --
5497 ----------------------------------------
5498
5499 -- PRIVATE_EXTENSION_DECLARATION ::=
5500 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
5501 -- [abstract] [limited | synchronized]
5502 -- new ancestor_SUBTYPE_INDICATION [and INTERFACE_LIST]
5503 -- with private [ASPECT_SPECIFICATIONS];
5504
5505 -- Note: LIMITED, and private extension declarations are not allowed
5506 -- in Ada 83 mode.
5507
5508 -- N_Private_Extension_Declaration
5509 -- Sloc points to TYPE
5510 -- Defining_Identifier (Node1)
5511 -- Uninitialized_Variable (Node3-Sem)
5512 -- Discriminant_Specifications (List4) (set to No_List if no
5513 -- discriminant part)
5514 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5515 -- Abstract_Present (Flag4)
5516 -- Limited_Present (Flag17)
5517 -- Synchronized_Present (Flag7)
5518 -- Subtype_Indication (Node5)
5519 -- Interface_List (List2) (set to No_List if none)
5520
5521 ---------------------
5522 -- 8.4 Use Clause --
5523 ---------------------
5524
5525 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
5526
5527 -----------------------------
5528 -- 8.4 Use Package Clause --
5529 -----------------------------
5530
5531 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
5532
5533 -- N_Use_Package_Clause
5534 -- Sloc points to USE
5535 -- Names (List2)
5536 -- Next_Use_Clause (Node3-Sem)
5537 -- Hidden_By_Use_Clause (Elist4-Sem)
5538
5539 --------------------------
5540 -- 8.4 Use Type Clause --
5541 --------------------------
5542
5543 -- USE_TYPE_CLAUSE ::= use [ALL] type SUBTYPE_MARK {, SUBTYPE_MARK};
5544
5545 -- Note: use type clause is not permitted in Ada 83 mode
5546
5547 -- Note: the ALL keyword can appear only in Ada 2012 mode
5548
5549 -- N_Use_Type_Clause
5550 -- Sloc points to USE
5551 -- Subtype_Marks (List2)
5552 -- Next_Use_Clause (Node3-Sem)
5553 -- Hidden_By_Use_Clause (Elist4-Sem)
5554 -- Used_Operations (Elist5-Sem)
5555 -- All_Present (Flag15)
5556
5557 -------------------------------
5558 -- 8.5 Renaming Declaration --
5559 -------------------------------
5560
5561 -- RENAMING_DECLARATION ::=
5562 -- OBJECT_RENAMING_DECLARATION
5563 -- | EXCEPTION_RENAMING_DECLARATION
5564 -- | PACKAGE_RENAMING_DECLARATION
5565 -- | SUBPROGRAM_RENAMING_DECLARATION
5566 -- | GENERIC_RENAMING_DECLARATION
5567
5568 --------------------------------------
5569 -- 8.5 Object Renaming Declaration --
5570 --------------------------------------
5571
5572 -- OBJECT_RENAMING_DECLARATION ::=
5573 -- DEFINING_IDENTIFIER :
5574 -- [NULL_EXCLUSION] SUBTYPE_MARK renames object_NAME
5575 -- [ASPECT_SPECIFICATIONS];
5576 -- | DEFINING_IDENTIFIER :
5577 -- ACCESS_DEFINITION renames object_NAME
5578 -- [ASPECT_SPECIFICATIONS];
5579
5580 -- Note: Access_Definition is an optional field that gives support to
5581 -- Ada 2005 (AI-230). The parser generates nodes that have either the
5582 -- Subtype_Indication field or else the Access_Definition field.
5583
5584 -- N_Object_Renaming_Declaration
5585 -- Sloc points to first identifier
5586 -- Defining_Identifier (Node1)
5587 -- Null_Exclusion_Present (Flag11) (set to False if not present)
5588 -- Subtype_Mark (Node4) (set to Empty if not present)
5589 -- Access_Definition (Node3) (set to Empty if not present)
5590 -- Name (Node2)
5591 -- Corresponding_Generic_Association (Node5-Sem)
5592
5593 -----------------------------------------
5594 -- 8.5 Exception Renaming Declaration --
5595 -----------------------------------------
5596
5597 -- EXCEPTION_RENAMING_DECLARATION ::=
5598 -- DEFINING_IDENTIFIER : exception renames exception_NAME
5599 -- [ASPECT_SPECIFICATIONS];
5600
5601 -- N_Exception_Renaming_Declaration
5602 -- Sloc points to first identifier
5603 -- Defining_Identifier (Node1)
5604 -- Name (Node2)
5605
5606 ---------------------------------------
5607 -- 8.5 Package Renaming Declaration --
5608 ---------------------------------------
5609
5610 -- PACKAGE_RENAMING_DECLARATION ::=
5611 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME
5612 -- [ASPECT_SPECIFICATIONS];
5613
5614 -- N_Package_Renaming_Declaration
5615 -- Sloc points to PACKAGE
5616 -- Defining_Unit_Name (Node1)
5617 -- Name (Node2)
5618 -- Parent_Spec (Node4-Sem)
5619
5620 ------------------------------------------
5621 -- 8.5 Subprogram Renaming Declaration --
5622 ------------------------------------------
5623
5624 -- SUBPROGRAM_RENAMING_DECLARATION ::=
5625 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME
5626 -- [ASPECT_SPECIFICATIONS];
5627
5628 -- N_Subprogram_Renaming_Declaration
5629 -- Sloc points to RENAMES
5630 -- Specification (Node1)
5631 -- Name (Node2)
5632 -- Parent_Spec (Node4-Sem)
5633 -- Corresponding_Spec (Node5-Sem)
5634 -- Corresponding_Formal_Spec (Node3-Sem)
5635 -- From_Default (Flag6-Sem)
5636
5637 -----------------------------------------
5638 -- 8.5.5 Generic Renaming Declaration --
5639 -----------------------------------------
5640
5641 -- GENERIC_RENAMING_DECLARATION ::=
5642 -- generic package DEFINING_PROGRAM_UNIT_NAME
5643 -- renames generic_package_NAME
5644 -- [ASPECT_SPECIFICATIONS];
5645 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
5646 -- renames generic_procedure_NAME
5647 -- [ASPECT_SPECIFICATIONS];
5648 -- | generic function DEFINING_PROGRAM_UNIT_NAME
5649 -- renames generic_function_NAME
5650 -- [ASPECT_SPECIFICATIONS];
5651
5652 -- N_Generic_Package_Renaming_Declaration
5653 -- Sloc points to GENERIC
5654 -- Defining_Unit_Name (Node1)
5655 -- Name (Node2)
5656 -- Parent_Spec (Node4-Sem)
5657
5658 -- N_Generic_Procedure_Renaming_Declaration
5659 -- Sloc points to GENERIC
5660 -- Defining_Unit_Name (Node1)
5661 -- Name (Node2)
5662 -- Parent_Spec (Node4-Sem)
5663
5664 -- N_Generic_Function_Renaming_Declaration
5665 -- Sloc points to GENERIC
5666 -- Defining_Unit_Name (Node1)
5667 -- Name (Node2)
5668 -- Parent_Spec (Node4-Sem)
5669
5670 --------------------------------
5671 -- 9.1 Task Type Declaration --
5672 --------------------------------
5673
5674 -- TASK_TYPE_DECLARATION ::=
5675 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
5676 -- [ASPECT_SPECIFICATIONS]
5677 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
5678
5679 -- N_Task_Type_Declaration
5680 -- Sloc points to TASK
5681 -- Defining_Identifier (Node1)
5682 -- Discriminant_Specifications (List4) (set to No_List if no
5683 -- discriminant part)
5684 -- Interface_List (List2) (set to No_List if none)
5685 -- Task_Definition (Node3) (set to Empty if not present)
5686 -- Corresponding_Body (Node5-Sem)
5687
5688 ----------------------------------
5689 -- 9.1 Single Task Declaration --
5690 ----------------------------------
5691
5692 -- SINGLE_TASK_DECLARATION ::=
5693 -- task DEFINING_IDENTIFIER
5694 -- [ASPECT_SPECIFICATIONS]
5695 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
5696
5697 -- N_Single_Task_Declaration
5698 -- Sloc points to TASK
5699 -- Defining_Identifier (Node1)
5700 -- Interface_List (List2) (set to No_List if none)
5701 -- Task_Definition (Node3) (set to Empty if not present)
5702
5703 --------------------------
5704 -- 9.1 Task Definition --
5705 --------------------------
5706
5707 -- TASK_DEFINITION ::=
5708 -- {TASK_ITEM}
5709 -- [private
5710 -- {TASK_ITEM}]
5711 -- end [task_IDENTIFIER]
5712
5713 -- Note: as a result of semantic analysis, the list of task items can
5714 -- include implicit type declarations resulting from entry families.
5715
5716 -- N_Task_Definition
5717 -- Sloc points to first token of task definition
5718 -- Visible_Declarations (List2)
5719 -- Private_Declarations (List3) (set to No_List if no private part)
5720 -- End_Label (Node4)
5721 -- Has_Storage_Size_Pragma (Flag5-Sem)
5722 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
5723
5724 --------------------
5725 -- 9.1 Task Item --
5726 --------------------
5727
5728 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
5729
5730 --------------------
5731 -- 9.1 Task Body --
5732 --------------------
5733
5734 -- TASK_BODY ::=
5735 -- task body task_DEFINING_IDENTIFIER
5736 -- [ASPECT_SPECIFICATIONS]
5737 -- is
5738 -- DECLARATIVE_PART
5739 -- begin
5740 -- HANDLED_SEQUENCE_OF_STATEMENTS
5741 -- end [task_IDENTIFIER];
5742
5743 -- Gigi restriction: This node never appears
5744
5745 -- N_Task_Body
5746 -- Sloc points to TASK
5747 -- Defining_Identifier (Node1)
5748 -- Declarations (List2)
5749 -- Handled_Statement_Sequence (Node4)
5750 -- Is_Task_Master (Flag5-Sem)
5751 -- Activation_Chain_Entity (Node3-Sem)
5752 -- Corresponding_Spec (Node5-Sem)
5753 -- Was_Originally_Stub (Flag13-Sem)
5754
5755 -------------------------------------
5756 -- 9.4 Protected Type Declaration --
5757 -------------------------------------
5758
5759 -- PROTECTED_TYPE_DECLARATION ::=
5760 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
5761 -- [ASPECT_SPECIFICATIONS]
5762 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
5763
5764 -- Note: protected type declarations are not permitted in Ada 83 mode
5765
5766 -- N_Protected_Type_Declaration
5767 -- Sloc points to PROTECTED
5768 -- Defining_Identifier (Node1)
5769 -- Discriminant_Specifications (List4) (set to No_List if no
5770 -- discriminant part)
5771 -- Interface_List (List2) (set to No_List if none)
5772 -- Protected_Definition (Node3)
5773 -- Corresponding_Body (Node5-Sem)
5774
5775 ---------------------------------------
5776 -- 9.4 Single Protected Declaration --
5777 ---------------------------------------
5778
5779 -- SINGLE_PROTECTED_DECLARATION ::=
5780 -- protected DEFINING_IDENTIFIER
5781 -- [ASPECT_SPECIFICATIONS]
5782 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
5783
5784 -- Note: single protected declarations are not allowed in Ada 83 mode
5785
5786 -- N_Single_Protected_Declaration
5787 -- Sloc points to PROTECTED
5788 -- Defining_Identifier (Node1)
5789 -- Interface_List (List2) (set to No_List if none)
5790 -- Protected_Definition (Node3)
5791
5792 -------------------------------
5793 -- 9.4 Protected Definition --
5794 -------------------------------
5795
5796 -- PROTECTED_DEFINITION ::=
5797 -- {PROTECTED_OPERATION_DECLARATION}
5798 -- [private
5799 -- {PROTECTED_ELEMENT_DECLARATION}]
5800 -- end [protected_IDENTIFIER]
5801
5802 -- N_Protected_Definition
5803 -- Sloc points to first token of protected definition
5804 -- Visible_Declarations (List2)
5805 -- Private_Declarations (List3) (set to No_List if no private part)
5806 -- End_Label (Node4)
5807
5808 ------------------------------------------
5809 -- 9.4 Protected Operation Declaration --
5810 ------------------------------------------
5811
5812 -- PROTECTED_OPERATION_DECLARATION ::=
5813 -- SUBPROGRAM_DECLARATION
5814 -- | ENTRY_DECLARATION
5815 -- | REPRESENTATION_CLAUSE
5816
5817 ----------------------------------------
5818 -- 9.4 Protected Element Declaration --
5819 ----------------------------------------
5820
5821 -- PROTECTED_ELEMENT_DECLARATION ::=
5822 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
5823
5824 -------------------------
5825 -- 9.4 Protected Body --
5826 -------------------------
5827
5828 -- PROTECTED_BODY ::=
5829 -- protected body DEFINING_IDENTIFIER
5830 -- [ASPECT_SPECIFICATIONS];
5831 -- is
5832 -- {PROTECTED_OPERATION_ITEM}
5833 -- end [protected_IDENTIFIER];
5834
5835 -- Note: protected bodies are not allowed in Ada 83 mode
5836
5837 -- Gigi restriction: This node never appears
5838
5839 -- N_Protected_Body
5840 -- Sloc points to PROTECTED
5841 -- Defining_Identifier (Node1)
5842 -- Declarations (List2) protected operation items (and pragmas)
5843 -- End_Label (Node4)
5844 -- Corresponding_Spec (Node5-Sem)
5845 -- Was_Originally_Stub (Flag13-Sem)
5846
5847 -----------------------------------
5848 -- 9.4 Protected Operation Item --
5849 -----------------------------------
5850
5851 -- PROTECTED_OPERATION_ITEM ::=
5852 -- SUBPROGRAM_DECLARATION
5853 -- | SUBPROGRAM_BODY
5854 -- | ENTRY_BODY
5855 -- | REPRESENTATION_CLAUSE
5856
5857 ------------------------------
5858 -- 9.5.2 Entry Declaration --
5859 ------------------------------
5860
5861 -- ENTRY_DECLARATION ::=
5862 -- [[not] overriding]
5863 -- entry DEFINING_IDENTIFIER
5864 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE
5865 -- [ASPECT_SPECIFICATIONS];
5866
5867 -- N_Entry_Declaration
5868 -- Sloc points to ENTRY
5869 -- Defining_Identifier (Node1)
5870 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
5871 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5872 -- Corresponding_Body (Node5-Sem)
5873 -- Must_Override (Flag14) set if overriding indicator present
5874 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5875
5876 -- Note: overriding indicator is an Ada 2005 feature
5877
5878 -----------------------------
5879 -- 9.5.2 Accept statement --
5880 -----------------------------
5881
5882 -- ACCEPT_STATEMENT ::=
5883 -- accept entry_DIRECT_NAME
5884 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
5885 -- HANDLED_SEQUENCE_OF_STATEMENTS
5886 -- end [entry_IDENTIFIER]];
5887
5888 -- Gigi restriction: This node never appears
5889
5890 -- Note: there are no explicit declarations allowed in an accept
5891 -- statement. However, the implicit declarations for any statement
5892 -- identifiers (labels and block/loop identifiers) are declarations
5893 -- that belong logically to the accept statement, and that is why
5894 -- there is a Declarations field in this node.
5895
5896 -- N_Accept_Statement
5897 -- Sloc points to ACCEPT
5898 -- Entry_Direct_Name (Node1)
5899 -- Entry_Index (Node5) (set to Empty if not present)
5900 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5901 -- Handled_Statement_Sequence (Node4)
5902 -- Declarations (List2) (set to No_List if no declarations)
5903
5904 ------------------------
5905 -- 9.5.2 Entry Index --
5906 ------------------------
5907
5908 -- ENTRY_INDEX ::= EXPRESSION
5909
5910 -----------------------
5911 -- 9.5.2 Entry Body --
5912 -----------------------
5913
5914 -- ENTRY_BODY ::=
5915 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
5916 -- DECLARATIVE_PART
5917 -- begin
5918 -- HANDLED_SEQUENCE_OF_STATEMENTS
5919 -- end [entry_IDENTIFIER];
5920
5921 -- ENTRY_BARRIER ::= when CONDITION
5922
5923 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
5924 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
5925 -- too full (it would otherwise have too many fields)
5926
5927 -- Gigi restriction: This node never appears
5928
5929 -- N_Entry_Body
5930 -- Sloc points to ENTRY
5931 -- Defining_Identifier (Node1)
5932 -- Entry_Body_Formal_Part (Node5)
5933 -- Declarations (List2)
5934 -- Handled_Statement_Sequence (Node4)
5935 -- Activation_Chain_Entity (Node3-Sem)
5936
5937 -----------------------------------
5938 -- 9.5.2 Entry Body Formal Part --
5939 -----------------------------------
5940
5941 -- ENTRY_BODY_FORMAL_PART ::=
5942 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
5943
5944 -- Note that an entry body formal part node is present even if it is
5945 -- empty. This reflects the grammar, in which it is the components of
5946 -- the entry body formal part that are optional, not the entry body
5947 -- formal part itself. Also this means that the barrier condition
5948 -- always has somewhere to be stored.
5949
5950 -- Gigi restriction: This node never appears
5951
5952 -- N_Entry_Body_Formal_Part
5953 -- Sloc points to first token
5954 -- Entry_Index_Specification (Node4) (set to Empty if not present)
5955 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5956 -- Condition (Node1) from entry barrier of entry body
5957
5958 --------------------------
5959 -- 9.5.2 Entry Barrier --
5960 --------------------------
5961
5962 -- ENTRY_BARRIER ::= when CONDITION
5963
5964 --------------------------------------
5965 -- 9.5.2 Entry Index Specification --
5966 --------------------------------------
5967
5968 -- ENTRY_INDEX_SPECIFICATION ::=
5969 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
5970
5971 -- Gigi restriction: This node never appears
5972
5973 -- N_Entry_Index_Specification
5974 -- Sloc points to FOR
5975 -- Defining_Identifier (Node1)
5976 -- Discrete_Subtype_Definition (Node4)
5977
5978 ---------------------------------
5979 -- 9.5.3 Entry Call Statement --
5980 ---------------------------------
5981
5982 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
5983
5984 -- The parser may generate a procedure call for this construct. The
5985 -- semantic pass must correct this misidentification where needed.
5986
5987 -- Gigi restriction: This node never appears
5988
5989 -- N_Entry_Call_Statement
5990 -- Sloc points to first token of name
5991 -- Name (Node2)
5992 -- Parameter_Associations (List3) (set to No_List if no
5993 -- actual parameter part)
5994 -- First_Named_Actual (Node4-Sem)
5995
5996 ------------------------------
5997 -- 9.5.4 Requeue Statement --
5998 ------------------------------
5999
6000 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
6001
6002 -- Note: requeue statements are not permitted in Ada 83 mode
6003
6004 -- Gigi restriction: This node never appears
6005
6006 -- N_Requeue_Statement
6007 -- Sloc points to REQUEUE
6008 -- Name (Node2)
6009 -- Abort_Present (Flag15)
6010
6011 --------------------------
6012 -- 9.6 Delay Statement --
6013 --------------------------
6014
6015 -- DELAY_STATEMENT ::=
6016 -- DELAY_UNTIL_STATEMENT
6017 -- | DELAY_RELATIVE_STATEMENT
6018
6019 --------------------------------
6020 -- 9.6 Delay Until Statement --
6021 --------------------------------
6022
6023 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
6024
6025 -- Note: delay until statements are not permitted in Ada 83 mode
6026
6027 -- Gigi restriction: This node never appears
6028
6029 -- N_Delay_Until_Statement
6030 -- Sloc points to DELAY
6031 -- Expression (Node3)
6032
6033 -----------------------------------
6034 -- 9.6 Delay Relative Statement --
6035 -----------------------------------
6036
6037 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
6038
6039 -- Gigi restriction: This node never appears
6040
6041 -- N_Delay_Relative_Statement
6042 -- Sloc points to DELAY
6043 -- Expression (Node3)
6044
6045 ---------------------------
6046 -- 9.7 Select Statement --
6047 ---------------------------
6048
6049 -- SELECT_STATEMENT ::=
6050 -- SELECTIVE_ACCEPT
6051 -- | TIMED_ENTRY_CALL
6052 -- | CONDITIONAL_ENTRY_CALL
6053 -- | ASYNCHRONOUS_SELECT
6054
6055 -----------------------------
6056 -- 9.7.1 Selective Accept --
6057 -----------------------------
6058
6059 -- SELECTIVE_ACCEPT ::=
6060 -- select
6061 -- [GUARD]
6062 -- SELECT_ALTERNATIVE
6063 -- {or
6064 -- [GUARD]
6065 -- SELECT_ALTERNATIVE}
6066 -- [else
6067 -- SEQUENCE_OF_STATEMENTS]
6068 -- end select;
6069
6070 -- Gigi restriction: This node never appears
6071
6072 -- Note: the guard expression, if present, appears in the node for
6073 -- the select alternative.
6074
6075 -- N_Selective_Accept
6076 -- Sloc points to SELECT
6077 -- Select_Alternatives (List1)
6078 -- Else_Statements (List4) (set to No_List if no else part)
6079
6080 ------------------
6081 -- 9.7.1 Guard --
6082 ------------------
6083
6084 -- GUARD ::= when CONDITION =>
6085
6086 -- As noted above, the CONDITION that is part of a GUARD is included
6087 -- in the node for the select alternative for convenience.
6088
6089 -------------------------------
6090 -- 9.7.1 Select Alternative --
6091 -------------------------------
6092
6093 -- SELECT_ALTERNATIVE ::=
6094 -- ACCEPT_ALTERNATIVE
6095 -- | DELAY_ALTERNATIVE
6096 -- | TERMINATE_ALTERNATIVE
6097
6098 -------------------------------
6099 -- 9.7.1 Accept Alternative --
6100 -------------------------------
6101
6102 -- ACCEPT_ALTERNATIVE ::=
6103 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
6104
6105 -- Gigi restriction: This node never appears
6106
6107 -- N_Accept_Alternative
6108 -- Sloc points to ACCEPT
6109 -- Accept_Statement (Node2)
6110 -- Condition (Node1) from the guard (set to Empty if no guard present)
6111 -- Statements (List3) (set to Empty_List if no statements)
6112 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6113 -- Accept_Handler_Records (List5-Sem)
6114
6115 ------------------------------
6116 -- 9.7.1 Delay Alternative --
6117 ------------------------------
6118
6119 -- DELAY_ALTERNATIVE ::=
6120 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
6121
6122 -- Gigi restriction: This node never appears
6123
6124 -- N_Delay_Alternative
6125 -- Sloc points to DELAY
6126 -- Delay_Statement (Node2)
6127 -- Condition (Node1) from the guard (set to Empty if no guard present)
6128 -- Statements (List3) (set to Empty_List if no statements)
6129 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6130
6131 ----------------------------------
6132 -- 9.7.1 Terminate Alternative --
6133 ----------------------------------
6134
6135 -- TERMINATE_ALTERNATIVE ::= terminate;
6136
6137 -- Gigi restriction: This node never appears
6138
6139 -- N_Terminate_Alternative
6140 -- Sloc points to TERMINATE
6141 -- Condition (Node1) from the guard (set to Empty if no guard present)
6142 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6143 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
6144
6145 -----------------------------
6146 -- 9.7.2 Timed Entry Call --
6147 -----------------------------
6148
6149 -- TIMED_ENTRY_CALL ::=
6150 -- select
6151 -- ENTRY_CALL_ALTERNATIVE
6152 -- or
6153 -- DELAY_ALTERNATIVE
6154 -- end select;
6155
6156 -- Gigi restriction: This node never appears
6157
6158 -- N_Timed_Entry_Call
6159 -- Sloc points to SELECT
6160 -- Entry_Call_Alternative (Node1)
6161 -- Delay_Alternative (Node4)
6162
6163 -----------------------------------
6164 -- 9.7.2 Entry Call Alternative --
6165 -----------------------------------
6166
6167 -- ENTRY_CALL_ALTERNATIVE ::=
6168 -- PROCEDURE_OR_ENTRY_CALL [SEQUENCE_OF_STATEMENTS]
6169
6170 -- PROCEDURE_OR_ENTRY_CALL ::=
6171 -- PROCEDURE_CALL_STATEMENT | ENTRY_CALL_STATEMENT
6172
6173 -- Gigi restriction: This node never appears
6174
6175 -- N_Entry_Call_Alternative
6176 -- Sloc points to first token of entry call statement
6177 -- Entry_Call_Statement (Node1)
6178 -- Statements (List3) (set to Empty_List if no statements)
6179 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6180
6181 -----------------------------------
6182 -- 9.7.3 Conditional Entry Call --
6183 -----------------------------------
6184
6185 -- CONDITIONAL_ENTRY_CALL ::=
6186 -- select
6187 -- ENTRY_CALL_ALTERNATIVE
6188 -- else
6189 -- SEQUENCE_OF_STATEMENTS
6190 -- end select;
6191
6192 -- Gigi restriction: This node never appears
6193
6194 -- N_Conditional_Entry_Call
6195 -- Sloc points to SELECT
6196 -- Entry_Call_Alternative (Node1)
6197 -- Else_Statements (List4)
6198
6199 --------------------------------
6200 -- 9.7.4 Asynchronous Select --
6201 --------------------------------
6202
6203 -- ASYNCHRONOUS_SELECT ::=
6204 -- select
6205 -- TRIGGERING_ALTERNATIVE
6206 -- then abort
6207 -- ABORTABLE_PART
6208 -- end select;
6209
6210 -- Note: asynchronous select is not permitted in Ada 83 mode
6211
6212 -- Gigi restriction: This node never appears
6213
6214 -- N_Asynchronous_Select
6215 -- Sloc points to SELECT
6216 -- Triggering_Alternative (Node1)
6217 -- Abortable_Part (Node2)
6218
6219 -----------------------------------
6220 -- 9.7.4 Triggering Alternative --
6221 -----------------------------------
6222
6223 -- TRIGGERING_ALTERNATIVE ::=
6224 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
6225
6226 -- Gigi restriction: This node never appears
6227
6228 -- N_Triggering_Alternative
6229 -- Sloc points to first token of triggering statement
6230 -- Triggering_Statement (Node1)
6231 -- Statements (List3) (set to Empty_List if no statements)
6232 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6233
6234 ---------------------------------
6235 -- 9.7.4 Triggering Statement --
6236 ---------------------------------
6237
6238 -- TRIGGERING_STATEMENT ::= PROCEDURE_OR_ENTRY_CALL | DELAY_STATEMENT
6239
6240 ---------------------------
6241 -- 9.7.4 Abortable Part --
6242 ---------------------------
6243
6244 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
6245
6246 -- Gigi restriction: This node never appears
6247
6248 -- N_Abortable_Part
6249 -- Sloc points to ABORT
6250 -- Statements (List3)
6251
6252 --------------------------
6253 -- 9.8 Abort Statement --
6254 --------------------------
6255
6256 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
6257
6258 -- Gigi restriction: This node never appears
6259
6260 -- N_Abort_Statement
6261 -- Sloc points to ABORT
6262 -- Names (List2)
6263
6264 -------------------------
6265 -- 10.1.1 Compilation --
6266 -------------------------
6267
6268 -- COMPILATION ::= {COMPILATION_UNIT}
6269
6270 -- There is no explicit node in the tree for a compilation, since in
6271 -- general the compiler is processing only a single compilation unit
6272 -- at a time. It is possible to parse multiple units in syntax check
6273 -- only mode, but the trees are discarded in that case.
6274
6275 ------------------------------
6276 -- 10.1.1 Compilation Unit --
6277 ------------------------------
6278
6279 -- COMPILATION_UNIT ::=
6280 -- CONTEXT_CLAUSE LIBRARY_ITEM
6281 -- | CONTEXT_CLAUSE SUBUNIT
6282
6283 -- The N_Compilation_Unit node itself represents the above syntax.
6284 -- However, there are two additional items not reflected in the above
6285 -- syntax. First we have the global declarations that are added by the
6286 -- code generator. These are outer level declarations (so they cannot
6287 -- be represented as being inside the units). An example is the wrapper
6288 -- subprograms that are created to do ABE checking. As always a list of
6289 -- declarations can contain actions as well (i.e. statements), and such
6290 -- statements are executed as part of the elaboration of the unit. Note
6291 -- that all such declarations are elaborated before the library unit.
6292
6293 -- Similarly, certain actions need to be elaborated at the completion
6294 -- of elaboration of the library unit (notably the statement that sets
6295 -- the Boolean flag indicating that elaboration is complete).
6296
6297 -- The third item not reflected in the syntax is pragmas that appear
6298 -- after the compilation unit. As always pragmas are a problem since
6299 -- they are not part of the formal syntax, but can be stuck into the
6300 -- source following a set of ad hoc rules, and we have to find an ad
6301 -- hoc way of sticking them into the tree. For pragmas that appear
6302 -- before the library unit, we just consider them to be part of the
6303 -- context clause, and pragmas can appear in the Context_Items list
6304 -- of the compilation unit. However, pragmas can also appear after
6305 -- the library item.
6306
6307 -- To deal with all these problems, we create an auxiliary node for
6308 -- a compilation unit, referenced from the N_Compilation_Unit node,
6309 -- that contains these items.
6310
6311 -- N_Compilation_Unit
6312 -- Sloc points to first token of defining unit name
6313 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
6314 -- Context_Items (List1) context items and pragmas preceding unit
6315 -- Private_Present (Flag15) set if library unit has private keyword
6316 -- Unit (Node2) library item or subunit
6317 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
6318 -- Has_No_Elaboration_Code (Flag17-Sem)
6319 -- Body_Required (Flag13-Sem) set for spec if body is required
6320 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
6321 -- Context_Pending (Flag16-Sem)
6322 -- First_Inlined_Subprogram (Node3-Sem)
6323 -- Has_Pragma_Suppress_All (Flag14-Sem)
6324
6325 -- N_Compilation_Unit_Aux
6326 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
6327 -- Declarations (List2) (set to No_List if no global declarations)
6328 -- Actions (List1) (set to No_List if no actions)
6329 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
6330 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
6331 -- Default_Storage_Pool (Node3-Sem)
6332
6333 --------------------------
6334 -- 10.1.1 Library Item --
6335 --------------------------
6336
6337 -- LIBRARY_ITEM ::=
6338 -- [private] LIBRARY_UNIT_DECLARATION
6339 -- | LIBRARY_UNIT_BODY
6340 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
6341
6342 -- Note: PRIVATE is not allowed in Ada 83 mode
6343
6344 -- There is no explicit node in the tree for library item, instead
6345 -- the declaration or body, and the flag for private if present,
6346 -- appear in the N_Compilation_Unit node.
6347
6348 --------------------------------------
6349 -- 10.1.1 Library Unit Declaration --
6350 --------------------------------------
6351
6352 -- LIBRARY_UNIT_DECLARATION ::=
6353 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
6354 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
6355
6356 -----------------------------------------------
6357 -- 10.1.1 Library Unit Renaming Declaration --
6358 -----------------------------------------------
6359
6360 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
6361 -- PACKAGE_RENAMING_DECLARATION
6362 -- | GENERIC_RENAMING_DECLARATION
6363 -- | SUBPROGRAM_RENAMING_DECLARATION
6364
6365 -------------------------------
6366 -- 10.1.1 Library unit body --
6367 -------------------------------
6368
6369 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
6370
6371 ------------------------------
6372 -- 10.1.1 Parent Unit Name --
6373 ------------------------------
6374
6375 -- PARENT_UNIT_NAME ::= NAME
6376
6377 ----------------------------
6378 -- 10.1.2 Context clause --
6379 ----------------------------
6380
6381 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
6382
6383 -- The context clause can include pragmas, and any pragmas that appear
6384 -- before the context clause proper (i.e. all configuration pragmas,
6385 -- also appear at the front of this list).
6386
6387 --------------------------
6388 -- 10.1.2 Context_Item --
6389 --------------------------
6390
6391 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
6392
6393 -------------------------
6394 -- 10.1.2 With clause --
6395 -------------------------
6396
6397 -- WITH_CLAUSE ::=
6398 -- with library_unit_NAME {,library_unit_NAME};
6399
6400 -- A separate With clause is built for each name, so that we have
6401 -- a Corresponding_Spec field for each with'ed spec. The flags
6402 -- First_Name and Last_Name are used to reconstruct the exact
6403 -- source form. When a list of names appears in one with clause,
6404 -- the first name in the list has First_Name set, and the last
6405 -- has Last_Name set. If the with clause has only one name, then
6406 -- both of the flags First_Name and Last_Name are set in this name.
6407
6408 -- Note: in the case of implicit with's that are installed by the
6409 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
6410 -- set to Standard_Location, but it is incorrect to test the Sloc
6411 -- to find out if a with clause is implicit, test the flag instead.
6412
6413 -- N_With_Clause
6414 -- Sloc points to first token of library unit name
6415 -- Withed_Body (Node1-Sem)
6416 -- Name (Node2)
6417 -- Next_Implicit_With (Node3-Sem)
6418 -- Library_Unit (Node4-Sem)
6419 -- Corresponding_Spec (Node5-Sem)
6420 -- First_Name (Flag5) (set to True if first name or only one name)
6421 -- Last_Name (Flag6) (set to True if last name or only one name)
6422 -- Context_Installed (Flag13-Sem)
6423 -- Elaborate_Present (Flag4-Sem)
6424 -- Elaborate_All_Present (Flag14-Sem)
6425 -- Elaborate_All_Desirable (Flag9-Sem)
6426 -- Elaborate_Desirable (Flag11-Sem)
6427 -- Private_Present (Flag15) set if with_clause has private keyword
6428 -- Implicit_With (Flag16-Sem)
6429 -- Implicit_With_From_Instantiation (Flag12-Sem)
6430 -- Limited_Present (Flag17) set if LIMITED is present
6431 -- Limited_View_Installed (Flag18-Sem)
6432 -- Unreferenced_In_Spec (Flag7-Sem)
6433 -- No_Entities_Ref_In_Spec (Flag8-Sem)
6434
6435 -- Note: Limited_Present and Limited_View_Installed are used to support
6436 -- the implementation of Ada 2005 (AI-50217).
6437
6438 -- Similarly, Private_Present is used to support the implementation of
6439 -- Ada 2005 (AI-50262).
6440
6441 -- Note: if the WITH clause refers to a standard library unit, then a
6442 -- limited with clause is changed into a normal with clause, because we
6443 -- are not prepared to deal with limited with in the context of Rtsfind.
6444 -- So in this case, the Limited_Present flag will be False in the final
6445 -- tree. However, we do NOT do this transformation in ASIS mode, so for
6446 -- ASIS the flag will remain set in this situation.
6447
6448 ----------------------
6449 -- With_Type clause --
6450 ----------------------
6451
6452 -- This is a GNAT extension, used to implement mutually recursive
6453 -- types declared in different packages.
6454
6455 -- Note: this is now obsolete. The functionality of this construct
6456 -- is now implemented by the Ada 2005 limited_with_clause.
6457
6458 ---------------------
6459 -- 10.2 Body stub --
6460 ---------------------
6461
6462 -- BODY_STUB ::=
6463 -- SUBPROGRAM_BODY_STUB
6464 -- | PACKAGE_BODY_STUB
6465 -- | TASK_BODY_STUB
6466 -- | PROTECTED_BODY_STUB
6467
6468 ----------------------------------
6469 -- 10.1.3 Subprogram Body Stub --
6470 ----------------------------------
6471
6472 -- SUBPROGRAM_BODY_STUB ::=
6473 -- SUBPROGRAM_SPECIFICATION is separate
6474 -- [ASPECT_SPECIFICATION];
6475
6476 -- N_Subprogram_Body_Stub
6477 -- Sloc points to FUNCTION or PROCEDURE
6478 -- Specification (Node1)
6479 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6480 -- Library_Unit (Node4-Sem) points to the subunit
6481 -- Corresponding_Body (Node5-Sem)
6482
6483 -------------------------------
6484 -- 10.1.3 Package Body Stub --
6485 -------------------------------
6486
6487 -- PACKAGE_BODY_STUB ::=
6488 -- package body DEFINING_IDENTIFIER is separate
6489 -- [ASPECT_SPECIFICATION];
6490
6491 -- N_Package_Body_Stub
6492 -- Sloc points to PACKAGE
6493 -- Defining_Identifier (Node1)
6494 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6495 -- Library_Unit (Node4-Sem) points to the subunit
6496 -- Corresponding_Body (Node5-Sem)
6497
6498 ----------------------------
6499 -- 10.1.3 Task Body Stub --
6500 ----------------------------
6501
6502 -- TASK_BODY_STUB ::=
6503 -- task body DEFINING_IDENTIFIER is separate
6504 -- [ASPECT_SPECIFICATION];
6505
6506 -- N_Task_Body_Stub
6507 -- Sloc points to TASK
6508 -- Defining_Identifier (Node1)
6509 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6510 -- Library_Unit (Node4-Sem) points to the subunit
6511 -- Corresponding_Body (Node5-Sem)
6512
6513 ---------------------------------
6514 -- 10.1.3 Protected Body Stub --
6515 ---------------------------------
6516
6517 -- PROTECTED_BODY_STUB ::=
6518 -- protected body DEFINING_IDENTIFIER is separate
6519 -- [ASPECT_SPECIFICATION];
6520
6521 -- Note: protected body stubs are not allowed in Ada 83 mode
6522
6523 -- N_Protected_Body_Stub
6524 -- Sloc points to PROTECTED
6525 -- Defining_Identifier (Node1)
6526 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6527 -- Library_Unit (Node4-Sem) points to the subunit
6528 -- Corresponding_Body (Node5-Sem)
6529
6530 ---------------------
6531 -- 10.1.3 Subunit --
6532 ---------------------
6533
6534 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
6535
6536 -- N_Subunit
6537 -- Sloc points to SEPARATE
6538 -- Name (Node2) is the name of the parent unit
6539 -- Proper_Body (Node1) is the subunit body
6540 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
6541
6542 ---------------------------------
6543 -- 11.1 Exception Declaration --
6544 ---------------------------------
6545
6546 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception
6547 -- [ASPECT_SPECIFICATIONS];
6548
6549 -- For consistency with object declarations etc., the parser converts
6550 -- the case of multiple identifiers being declared to a series of
6551 -- declarations in which the expression is copied, using the More_Ids
6552 -- and Prev_Ids flags to remember the source form as described in the
6553 -- section on "Handling of Defining Identifier Lists".
6554
6555 -- N_Exception_Declaration
6556 -- Sloc points to EXCEPTION
6557 -- Defining_Identifier (Node1)
6558 -- Expression (Node3-Sem)
6559 -- Renaming_Exception (Node2-Sem)
6560 -- More_Ids (Flag5) (set to False if no more identifiers in list)
6561 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
6562
6563 ------------------------------------------
6564 -- 11.2 Handled Sequence Of Statements --
6565 ------------------------------------------
6566
6567 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
6568 -- SEQUENCE_OF_STATEMENTS
6569 -- [exception
6570 -- EXCEPTION_HANDLER
6571 -- {EXCEPTION_HANDLER}]
6572 -- [at end
6573 -- cleanup_procedure_call (param, param, param, ...);]
6574
6575 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
6576 -- used only internally currently, but is considered to be syntactic.
6577 -- At the moment, the only cleanup action allowed is a single call to
6578 -- a parameterless procedure, and the Identifier field of the node is
6579 -- the procedure to be called. The cleanup action occurs whenever the
6580 -- sequence of statements is left for any reason. The possible reasons
6581 -- are:
6582 -- 1. reaching the end of the sequence
6583 -- 2. exit, return, or goto
6584 -- 3. exception or abort
6585 -- For some back ends, such as gcc with ZCX, "at end" is implemented
6586 -- entirely in the back end. In this case, a handled sequence of
6587 -- statements with an "at end" cannot also have exception handlers.
6588 -- For other back ends, such as gcc with front-end SJLJ, the
6589 -- implementation is split between the front end and back end; the front
6590 -- end implements 3, and the back end implements 1 and 2. In this case,
6591 -- if there is an "at end", the front end inserts the appropriate
6592 -- exception handler, and this handler takes precedence over "at end"
6593 -- in case of exception.
6594
6595 -- The inserted exception handler is of the form:
6596
6597 -- when all others =>
6598 -- cleanup;
6599 -- raise;
6600
6601 -- where cleanup is the procedure to be called. The reason we do this is
6602 -- so that the front end can handle the necessary entries in the
6603 -- exception tables, and other exception handler actions required as
6604 -- part of the normal handling for exception handlers.
6605
6606 -- The AT END cleanup handler protects only the sequence of statements
6607 -- (not the associated declarations of the parent), just like exception
6608 -- handlers. The big difference is that the cleanup procedure is called
6609 -- on either a normal or an abnormal exit from the statement sequence.
6610
6611 -- Note: the list of Exception_Handlers can contain pragmas as well
6612 -- as actual handlers. In practice these pragmas can only occur at
6613 -- the start of the list, since any pragmas occurring later on will
6614 -- be included in the statement list of the corresponding handler.
6615
6616 -- Note: although in the Ada syntax, the sequence of statements in
6617 -- a handled sequence of statements can only contain statements, we
6618 -- allow free mixing of declarations and statements in the resulting
6619 -- expanded tree. This is for example used to deal with the case of
6620 -- a cleanup procedure that must handle declarations as well as the
6621 -- statements of a block.
6622
6623 -- Note: the cleanup_procedure_call does not go through the common
6624 -- processing for calls, which in particular means that it will not be
6625 -- automatically inlined in all cases, even though the procedure to be
6626 -- called is marked inline. More specifically, if the procedure comes
6627 -- from another unit than the main source unit, for example a run-time
6628 -- unit, then it needs to be manually added to the list of bodies to be
6629 -- inlined by invoking Add_Inlined_Body on it.
6630
6631 -- N_Handled_Sequence_Of_Statements
6632 -- Sloc points to first token of first statement
6633 -- Statements (List3)
6634 -- End_Label (Node4) (set to Empty if expander generated)
6635 -- Exception_Handlers (List5) (set to No_List if none present)
6636 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
6637 -- First_Real_Statement (Node2-Sem)
6638
6639 -- Note: the parent always contains a Declarations field which contains
6640 -- declarations associated with the handled sequence of statements. This
6641 -- is true even in the case of an accept statement (see description of
6642 -- the N_Accept_Statement node).
6643
6644 -- End_Label refers to the containing construct
6645
6646 -----------------------------
6647 -- 11.2 Exception Handler --
6648 -----------------------------
6649
6650 -- EXCEPTION_HANDLER ::=
6651 -- when [CHOICE_PARAMETER_SPECIFICATION :]
6652 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
6653 -- SEQUENCE_OF_STATEMENTS
6654
6655 -- Note: choice parameter specification is not allowed in Ada 83 mode
6656
6657 -- N_Exception_Handler
6658 -- Sloc points to WHEN
6659 -- Choice_Parameter (Node2) (set to Empty if not present)
6660 -- Exception_Choices (List4)
6661 -- Statements (List3)
6662 -- Exception_Label (Node5-Sem) (set to Empty of not present)
6663 -- Local_Raise_Statements (Elist1-Sem) (set to No_Elist if not present)
6664 -- Local_Raise_Not_OK (Flag7-Sem)
6665 -- Has_Local_Raise (Flag8-Sem)
6666
6667 ------------------------------------------
6668 -- 11.2 Choice parameter specification --
6669 ------------------------------------------
6670
6671 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
6672
6673 ----------------------------
6674 -- 11.2 Exception Choice --
6675 ----------------------------
6676
6677 -- EXCEPTION_CHOICE ::= exception_NAME | others
6678
6679 -- Except in the case of OTHERS, no explicit node appears in the tree
6680 -- for exception choice. Instead the exception name appears directly.
6681 -- An OTHERS choice is represented by a N_Others_Choice node (see
6682 -- section 3.8.1.
6683
6684 -- Note: for the exception choice created for an at end handler, the
6685 -- exception choice is an N_Others_Choice node with All_Others set.
6686
6687 ---------------------------
6688 -- 11.3 Raise Statement --
6689 ---------------------------
6690
6691 -- RAISE_STATEMENT ::= raise [exception_NAME];
6692
6693 -- In Ada 2005, we have
6694
6695 -- RAISE_STATEMENT ::=
6696 -- raise; | raise exception_NAME [with string_EXPRESSION];
6697
6698 -- N_Raise_Statement
6699 -- Sloc points to RAISE
6700 -- Name (Node2) (set to Empty if no exception name present)
6701 -- Expression (Node3) (set to Empty if no expression present)
6702 -- From_At_End (Flag4-Sem)
6703
6704 ----------------------------
6705 -- 11.3 Raise Expression --
6706 ----------------------------
6707
6708 -- RAISE_EXPRESSION ::= raise exception_NAME [with string_EXPRESSION]
6709
6710 -- N_Raise_Expression
6711 -- Sloc points to RAISE
6712 -- Name (Node2) (always present)
6713 -- Expression (Node3) (set to Empty if no expression present)
6714 -- Convert_To_Return_False (Flag13-Sem)
6715 -- plus fields for expression
6716
6717 -------------------------------
6718 -- 12.1 Generic Declaration --
6719 -------------------------------
6720
6721 -- GENERIC_DECLARATION ::=
6722 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
6723
6724 ------------------------------------------
6725 -- 12.1 Generic Subprogram Declaration --
6726 ------------------------------------------
6727
6728 -- GENERIC_SUBPROGRAM_DECLARATION ::=
6729 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION
6730 -- [ASPECT_SPECIFICATIONS];
6731
6732 -- Note: Generic_Formal_Declarations can include pragmas
6733
6734 -- N_Generic_Subprogram_Declaration
6735 -- Sloc points to GENERIC
6736 -- Specification (Node1) subprogram specification
6737 -- Corresponding_Body (Node5-Sem)
6738 -- Generic_Formal_Declarations (List2) from generic formal part
6739 -- Parent_Spec (Node4-Sem)
6740
6741 ---------------------------------------
6742 -- 12.1 Generic Package Declaration --
6743 ---------------------------------------
6744
6745 -- GENERIC_PACKAGE_DECLARATION ::=
6746 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION
6747 -- [ASPECT_SPECIFICATIONS];
6748
6749 -- Note: when we do generics right, the Activation_Chain_Entity entry
6750 -- for this node can be removed (since the expander won't see generic
6751 -- units any more)???.
6752
6753 -- Note: Generic_Formal_Declarations can include pragmas
6754
6755 -- N_Generic_Package_Declaration
6756 -- Sloc points to GENERIC
6757 -- Specification (Node1) package specification
6758 -- Corresponding_Body (Node5-Sem)
6759 -- Generic_Formal_Declarations (List2) from generic formal part
6760 -- Parent_Spec (Node4-Sem)
6761 -- Activation_Chain_Entity (Node3-Sem)
6762
6763 -------------------------------
6764 -- 12.1 Generic Formal Part --
6765 -------------------------------
6766
6767 -- GENERIC_FORMAL_PART ::=
6768 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
6769
6770 ------------------------------------------------
6771 -- 12.1 Generic Formal Parameter Declaration --
6772 ------------------------------------------------
6773
6774 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
6775 -- FORMAL_OBJECT_DECLARATION
6776 -- | FORMAL_TYPE_DECLARATION
6777 -- | FORMAL_SUBPROGRAM_DECLARATION
6778 -- | FORMAL_PACKAGE_DECLARATION
6779
6780 ---------------------------------
6781 -- 12.3 Generic Instantiation --
6782 ---------------------------------
6783
6784 -- GENERIC_INSTANTIATION ::=
6785 -- package DEFINING_PROGRAM_UNIT_NAME is
6786 -- new generic_package_NAME [GENERIC_ACTUAL_PART]
6787 -- [ASPECT_SPECIFICATIONS];
6788 -- | [[not] overriding]
6789 -- procedure DEFINING_PROGRAM_UNIT_NAME is
6790 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART]
6791 -- [ASPECT_SPECIFICATIONS];
6792 -- | [[not] overriding]
6793 -- function DEFINING_DESIGNATOR is
6794 -- new generic_function_NAME [GENERIC_ACTUAL_PART]
6795 -- [ASPECT_SPECIFICATIONS];
6796
6797 -- N_Package_Instantiation
6798 -- Sloc points to PACKAGE
6799 -- Defining_Unit_Name (Node1)
6800 -- Name (Node2)
6801 -- Generic_Associations (List3) (set to No_List if no
6802 -- generic actual part)
6803 -- Parent_Spec (Node4-Sem)
6804 -- Instance_Spec (Node5-Sem)
6805 -- ABE_Is_Certain (Flag18-Sem)
6806
6807 -- N_Procedure_Instantiation
6808 -- Sloc points to PROCEDURE
6809 -- Defining_Unit_Name (Node1)
6810 -- Name (Node2)
6811 -- Parent_Spec (Node4-Sem)
6812 -- Generic_Associations (List3) (set to No_List if no
6813 -- generic actual part)
6814 -- Instance_Spec (Node5-Sem)
6815 -- Must_Override (Flag14) set if overriding indicator present
6816 -- Must_Not_Override (Flag15) set if not_overriding indicator present
6817 -- ABE_Is_Certain (Flag18-Sem)
6818
6819 -- N_Function_Instantiation
6820 -- Sloc points to FUNCTION
6821 -- Defining_Unit_Name (Node1)
6822 -- Name (Node2)
6823 -- Generic_Associations (List3) (set to No_List if no
6824 -- generic actual part)
6825 -- Parent_Spec (Node4-Sem)
6826 -- Instance_Spec (Node5-Sem)
6827 -- Must_Override (Flag14) set if overriding indicator present
6828 -- Must_Not_Override (Flag15) set if not_overriding indicator present
6829 -- ABE_Is_Certain (Flag18-Sem)
6830
6831 -- Note: overriding indicator is an Ada 2005 feature
6832
6833 -------------------------------
6834 -- 12.3 Generic Actual Part --
6835 -------------------------------
6836
6837 -- GENERIC_ACTUAL_PART ::=
6838 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
6839
6840 -------------------------------
6841 -- 12.3 Generic Association --
6842 -------------------------------
6843
6844 -- GENERIC_ASSOCIATION ::=
6845 -- [generic_formal_parameter_SELECTOR_NAME =>]
6846
6847 -- Note: unlike the procedure call case, a generic association node
6848 -- is generated for every association, even if no formal parameter
6849 -- selector name is present. In this case the parser will leave the
6850 -- Selector_Name field set to Empty, to be filled in later by the
6851 -- semantic pass.
6852
6853 -- In Ada 2005, a formal may be associated with a box, if the
6854 -- association is part of the list of actuals for a formal package.
6855 -- If the association is given by OTHERS => <>, the association is
6856 -- an N_Others_Choice.
6857
6858 -- N_Generic_Association
6859 -- Sloc points to first token of generic association
6860 -- Selector_Name (Node2) (set to Empty if no formal
6861 -- parameter selector name)
6862 -- Explicit_Generic_Actual_Parameter (Node1) (Empty if box present)
6863 -- Box_Present (Flag15) (for formal_package associations with a box)
6864
6865 ---------------------------------------------
6866 -- 12.3 Explicit Generic Actual Parameter --
6867 ---------------------------------------------
6868
6869 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
6870 -- EXPRESSION | variable_NAME | subprogram_NAME
6871 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
6872
6873 -------------------------------------
6874 -- 12.4 Formal Object Declaration --
6875 -------------------------------------
6876
6877 -- FORMAL_OBJECT_DECLARATION ::=
6878 -- DEFINING_IDENTIFIER_LIST :
6879 -- MODE [NULL_EXCLUSION] SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
6880 -- [ASPECT_SPECIFICATIONS];
6881 -- | DEFINING_IDENTIFIER_LIST :
6882 -- MODE ACCESS_DEFINITION [:= DEFAULT_EXPRESSION]
6883 -- [ASPECT_SPECIFICATIONS];
6884
6885 -- Although the syntax allows multiple identifiers in the list, the
6886 -- semantics is as though successive declarations were given with
6887 -- identical type definition and expression components. To simplify
6888 -- semantic processing, the parser represents a multiple declaration
6889 -- case as a sequence of single declarations, using the More_Ids and
6890 -- Prev_Ids flags to preserve the original source form as described
6891 -- in the section on "Handling of Defining Identifier Lists".
6892
6893 -- N_Formal_Object_Declaration
6894 -- Sloc points to first identifier
6895 -- Defining_Identifier (Node1)
6896 -- In_Present (Flag15)
6897 -- Out_Present (Flag17)
6898 -- Null_Exclusion_Present (Flag11) (set to False if not present)
6899 -- Subtype_Mark (Node4) (set to Empty if not present)
6900 -- Access_Definition (Node3) (set to Empty if not present)
6901 -- Default_Expression (Node5) (set to Empty if no default expression)
6902 -- More_Ids (Flag5) (set to False if no more identifiers in list)
6903 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
6904
6905 -----------------------------------
6906 -- 12.5 Formal Type Declaration --
6907 -----------------------------------
6908
6909 -- FORMAL_TYPE_DECLARATION ::=
6910 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
6911 -- is FORMAL_TYPE_DEFINITION
6912 -- [ASPECT_SPECIFICATIONS];
6913 -- | type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [is tagged]
6914
6915 -- N_Formal_Type_Declaration
6916 -- Sloc points to TYPE
6917 -- Defining_Identifier (Node1)
6918 -- Formal_Type_Definition (Node3)
6919 -- Discriminant_Specifications (List4) (set to No_List if no
6920 -- discriminant part)
6921 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
6922
6923 ----------------------------------
6924 -- 12.5 Formal type definition --
6925 ----------------------------------
6926
6927 -- FORMAL_TYPE_DEFINITION ::=
6928 -- FORMAL_PRIVATE_TYPE_DEFINITION
6929 -- | FORMAL_DERIVED_TYPE_DEFINITION
6930 -- | FORMAL_DISCRETE_TYPE_DEFINITION
6931 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
6932 -- | FORMAL_MODULAR_TYPE_DEFINITION
6933 -- | FORMAL_FLOATING_POINT_DEFINITION
6934 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
6935 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
6936 -- | FORMAL_ARRAY_TYPE_DEFINITION
6937 -- | FORMAL_ACCESS_TYPE_DEFINITION
6938 -- | FORMAL_INTERFACE_TYPE_DEFINITION
6939 -- | FORMAL_INCOMPLETE_TYPE_DEFINITION
6940
6941 -- The Ada 2012 syntax introduces two new non-terminals:
6942 -- Formal_{Complete,Incomplete}_Type_Declaration just to introduce
6943 -- the latter category. Here we introduce an incomplete type definition
6944 -- in order to preserve as much as possible the existing structure.
6945
6946 ---------------------------------------------
6947 -- 12.5.1 Formal Private Type Definition --
6948 ---------------------------------------------
6949
6950 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
6951 -- [[abstract] tagged] [limited] private
6952
6953 -- Note: TAGGED is not allowed in Ada 83 mode
6954
6955 -- N_Formal_Private_Type_Definition
6956 -- Sloc points to PRIVATE
6957 -- Uninitialized_Variable (Node3-Sem)
6958 -- Abstract_Present (Flag4)
6959 -- Tagged_Present (Flag15)
6960 -- Limited_Present (Flag17)
6961
6962 --------------------------------------------
6963 -- 12.5.1 Formal Derived Type Definition --
6964 --------------------------------------------
6965
6966 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
6967 -- [abstract] [limited | synchronized]
6968 -- new SUBTYPE_MARK [[and INTERFACE_LIST] with private]
6969 -- Note: this construct is not allowed in Ada 83 mode
6970
6971 -- N_Formal_Derived_Type_Definition
6972 -- Sloc points to NEW
6973 -- Subtype_Mark (Node4)
6974 -- Private_Present (Flag15)
6975 -- Abstract_Present (Flag4)
6976 -- Limited_Present (Flag17)
6977 -- Synchronized_Present (Flag7)
6978 -- Interface_List (List2) (set to No_List if none)
6979
6980 -----------------------------------------------
6981 -- 12.5.1 Formal Incomplete Type Definition --
6982 -----------------------------------------------
6983
6984 -- FORMAL_INCOMPLETE_TYPE_DEFINITION ::= [tagged]
6985
6986 -- N_Formal_Incomplete_Type_Definition
6987 -- Sloc points to identifier of parent
6988 -- Tagged_Present (Flag15)
6989
6990 ---------------------------------------------
6991 -- 12.5.2 Formal Discrete Type Definition --
6992 ---------------------------------------------
6993
6994 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
6995
6996 -- N_Formal_Discrete_Type_Definition
6997 -- Sloc points to (
6998
6999 ---------------------------------------------------
7000 -- 12.5.2 Formal Signed Integer Type Definition --
7001 ---------------------------------------------------
7002
7003 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
7004
7005 -- N_Formal_Signed_Integer_Type_Definition
7006 -- Sloc points to RANGE
7007
7008 --------------------------------------------
7009 -- 12.5.2 Formal Modular Type Definition --
7010 --------------------------------------------
7011
7012 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
7013
7014 -- N_Formal_Modular_Type_Definition
7015 -- Sloc points to MOD
7016
7017 ----------------------------------------------
7018 -- 12.5.2 Formal Floating Point Definition --
7019 ----------------------------------------------
7020
7021 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
7022
7023 -- N_Formal_Floating_Point_Definition
7024 -- Sloc points to DIGITS
7025
7026 ----------------------------------------------------
7027 -- 12.5.2 Formal Ordinary Fixed Point Definition --
7028 ----------------------------------------------------
7029
7030 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
7031
7032 -- N_Formal_Ordinary_Fixed_Point_Definition
7033 -- Sloc points to DELTA
7034
7035 ---------------------------------------------------
7036 -- 12.5.2 Formal Decimal Fixed Point Definition --
7037 ---------------------------------------------------
7038
7039 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
7040
7041 -- Note: formal decimal fixed point definition not allowed in Ada 83
7042
7043 -- N_Formal_Decimal_Fixed_Point_Definition
7044 -- Sloc points to DELTA
7045
7046 ------------------------------------------
7047 -- 12.5.3 Formal Array Type Definition --
7048 ------------------------------------------
7049
7050 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
7051
7052 -------------------------------------------
7053 -- 12.5.4 Formal Access Type Definition --
7054 -------------------------------------------
7055
7056 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
7057
7058 ----------------------------------------------
7059 -- 12.5.5 Formal Interface Type Definition --
7060 ----------------------------------------------
7061
7062 -- FORMAL_INTERFACE_TYPE_DEFINITION ::= INTERFACE_TYPE_DEFINITION
7063
7064 -----------------------------------------
7065 -- 12.6 Formal Subprogram Declaration --
7066 -----------------------------------------
7067
7068 -- FORMAL_SUBPROGRAM_DECLARATION ::=
7069 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION
7070 -- | FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION
7071
7072 --------------------------------------------------
7073 -- 12.6 Formal Concrete Subprogram Declaration --
7074 --------------------------------------------------
7075
7076 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION ::=
7077 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT]
7078 -- [ASPECT_SPECIFICATIONS];
7079
7080 -- N_Formal_Concrete_Subprogram_Declaration
7081 -- Sloc points to WITH
7082 -- Specification (Node1)
7083 -- Default_Name (Node2) (set to Empty if no subprogram default)
7084 -- Box_Present (Flag15)
7085
7086 -- Note: if no subprogram default is present, then Name is set
7087 -- to Empty, and Box_Present is False.
7088
7089 --------------------------------------------------
7090 -- 12.6 Formal Abstract Subprogram Declaration --
7091 --------------------------------------------------
7092
7093 -- FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION ::=
7094 -- with SUBPROGRAM_SPECIFICATION is abstract [SUBPROGRAM_DEFAULT]
7095 -- [ASPECT_SPECIFICATIONS];
7096
7097 -- N_Formal_Abstract_Subprogram_Declaration
7098 -- Sloc points to WITH
7099 -- Specification (Node1)
7100 -- Default_Name (Node2) (set to Empty if no subprogram default)
7101 -- Box_Present (Flag15)
7102
7103 -- Note: if no subprogram default is present, then Name is set
7104 -- to Empty, and Box_Present is False.
7105
7106 ------------------------------
7107 -- 12.6 Subprogram Default --
7108 ------------------------------
7109
7110 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
7111
7112 -- There is no separate node in the tree for a subprogram default.
7113 -- Instead the parent (N_Formal_Concrete_Subprogram_Declaration
7114 -- or N_Formal_Abstract_Subprogram_Declaration) node contains the
7115 -- default name or box indication, as needed.
7116
7117 ------------------------
7118 -- 12.6 Default Name --
7119 ------------------------
7120
7121 -- DEFAULT_NAME ::= NAME
7122
7123 --------------------------------------
7124 -- 12.7 Formal Package Declaration --
7125 --------------------------------------
7126
7127 -- FORMAL_PACKAGE_DECLARATION ::=
7128 -- with package DEFINING_IDENTIFIER
7129 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART
7130 -- [ASPECT_SPECIFICATIONS];
7131
7132 -- Note: formal package declarations not allowed in Ada 83 mode
7133
7134 -- N_Formal_Package_Declaration
7135 -- Sloc points to WITH
7136 -- Defining_Identifier (Node1)
7137 -- Name (Node2)
7138 -- Generic_Associations (List3) (set to No_List if (<>) case or
7139 -- empty generic actual part)
7140 -- Box_Present (Flag15)
7141 -- Instance_Spec (Node5-Sem)
7142 -- ABE_Is_Certain (Flag18-Sem)
7143
7144 --------------------------------------
7145 -- 12.7 Formal Package Actual Part --
7146 --------------------------------------
7147
7148 -- FORMAL_PACKAGE_ACTUAL_PART ::=
7149 -- ([OTHERS] => <>)
7150 -- | [GENERIC_ACTUAL_PART]
7151 -- (FORMAL_PACKAGE_ASSOCIATION {. FORMAL_PACKAGE_ASSOCIATION}
7152
7153 -- FORMAL_PACKAGE_ASSOCIATION ::=
7154 -- GENERIC_ASSOCIATION
7155 -- | GENERIC_FORMAL_PARAMETER_SELECTOR_NAME => <>
7156
7157 -- There is no explicit node in the tree for a formal package actual
7158 -- part. Instead the information appears in the parent node (i.e. the
7159 -- formal package declaration node itself).
7160
7161 -- There is no explicit node for a formal package association. All of
7162 -- them are represented either by a generic association, possibly with
7163 -- Box_Present, or by an N_Others_Choice.
7164
7165 ---------------------------------
7166 -- 13.1 Representation clause --
7167 ---------------------------------
7168
7169 -- REPRESENTATION_CLAUSE ::=
7170 -- ATTRIBUTE_DEFINITION_CLAUSE
7171 -- | ENUMERATION_REPRESENTATION_CLAUSE
7172 -- | RECORD_REPRESENTATION_CLAUSE
7173 -- | AT_CLAUSE
7174
7175 ----------------------
7176 -- 13.1 Local Name --
7177 ----------------------
7178
7179 -- LOCAL_NAME :=
7180 -- DIRECT_NAME
7181 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
7182 -- | library_unit_NAME
7183
7184 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
7185 -- as an attribute reference, which has essentially the same form.
7186
7187 ---------------------------------------
7188 -- 13.3 Attribute definition clause --
7189 ---------------------------------------
7190
7191 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
7192 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
7193 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
7194
7195 -- In Ada 83, the expression must be a simple expression and the
7196 -- local name must be a direct name.
7197
7198 -- Note: the only attribute definition clause that is processed by
7199 -- gigi is an address clause. For all other cases, the information
7200 -- is extracted by the front end and either results in setting entity
7201 -- information, e.g. Esize for the Size clause, or in appropriate
7202 -- expansion actions (e.g. in the case of Storage_Size).
7203
7204 -- For an address clause, Gigi constructs the appropriate addressing
7205 -- code. It also ensures that no aliasing optimizations are made
7206 -- for the object for which the address clause appears.
7207
7208 -- Note: for an address clause used to achieve an overlay:
7209
7210 -- A : Integer;
7211 -- B : Integer;
7212 -- for B'Address use A'Address;
7213
7214 -- the above rule means that Gigi will ensure that no optimizations
7215 -- will be made for B that would violate the implementation advice
7216 -- of RM 13.3(19). However, this advice applies only to B and not
7217 -- to A, which seems unfortunate. The GNAT front end will mark the
7218 -- object A as volatile to also prevent unwanted optimization
7219 -- assumptions based on no aliasing being made for B.
7220
7221 -- N_Attribute_Definition_Clause
7222 -- Sloc points to FOR
7223 -- Name (Node2) the local name
7224 -- Chars (Name1) the identifier name from the attribute designator
7225 -- Expression (Node3) the expression or name
7226 -- Entity (Node4-Sem)
7227 -- Next_Rep_Item (Node5-Sem)
7228 -- From_At_Mod (Flag4-Sem)
7229 -- Check_Address_Alignment (Flag11-Sem)
7230 -- From_Aspect_Specification (Flag13-Sem)
7231 -- Is_Delayed_Aspect (Flag14-Sem)
7232 -- Address_Warning_Posted (Flag18-Sem)
7233
7234 -- Note: if From_Aspect_Specification is set, then Sloc points to the
7235 -- aspect name, and Entity is resolved already to reference the entity
7236 -- to which the aspect applies.
7237
7238 -----------------------------------
7239 -- 13.3.1 Aspect Specifications --
7240 -----------------------------------
7241
7242 -- We modify the RM grammar here, the RM grammar is:
7243
7244 -- ASPECT_SPECIFICATION ::=
7245 -- with ASPECT_MARK [=> ASPECT_DEFINITION] {,
7246 -- ASPECT_MARK [=> ASPECT_DEFINITION] }
7247
7248 -- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
7249
7250 -- ASPECT_DEFINITION ::= NAME | EXPRESSION
7251
7252 -- That's inconvenient, since there is no non-terminal name for a single
7253 -- entry in the list of aspects. So we use this grammar instead:
7254
7255 -- ASPECT_SPECIFICATIONS ::=
7256 -- with ASPECT_SPECIFICATION {, ASPECT_SPECIFICATION}
7257
7258 -- ASPECT_SPECIFICATION =>
7259 -- ASPECT_MARK [=> ASPECT_DEFINITION]
7260
7261 -- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
7262
7263 -- ASPECT_DEFINITION ::= NAME | EXPRESSION
7264
7265 -- Note that for Annotate, the ASPECT_DEFINITION is a pure positional
7266 -- aggregate with the elements of the aggregate corresponding to the
7267 -- successive arguments of the corresponding pragma.
7268
7269 -- See separate package Aspects for details on the incorporation of
7270 -- these nodes into the tree, and how aspect specifications for a given
7271 -- declaration node are associated with that node.
7272
7273 -- N_Aspect_Specification
7274 -- Sloc points to aspect identifier
7275 -- Identifier (Node1) aspect identifier
7276 -- Aspect_Rep_Item (Node2-Sem)
7277 -- Expression (Node3) Aspect_Definition (set to Empty if none)
7278 -- Entity (Node4-Sem) entity to which the aspect applies
7279 -- Next_Rep_Item (Node5-Sem)
7280 -- Class_Present (Flag6) Set if 'Class present
7281 -- Is_Ignored (Flag9-Sem)
7282 -- Is_Checked (Flag11-Sem)
7283 -- Is_Delayed_Aspect (Flag14-Sem)
7284 -- Is_Disabled (Flag15-Sem)
7285 -- Is_Boolean_Aspect (Flag16-Sem)
7286 -- Split_PPC (Flag17) Set if split pre/post attribute
7287
7288 -- Note: Aspect_Specification is an Ada 2012 feature
7289
7290 -- Note: The Identifier serves to identify the aspect involved (it
7291 -- is the aspect whose name corresponds to the Chars field). This
7292 -- means that the other fields of this identifier are unused, and
7293 -- in particular we use the Entity field of this identifier to save
7294 -- a copy of the expression for visibility analysis, see spec of
7295 -- Sem_Ch13 for full details of this usage.
7296
7297 -- In the case of aspects of the form xxx'Class, the aspect identifier
7298 -- is for xxx, and Class_Present is set to True.
7299
7300 -- Note: When a Pre or Post aspect specification is processed, it is
7301 -- broken into AND THEN sections. The left most section has Split_PPC
7302 -- set to False, indicating that it is the original specification (e.g.
7303 -- for posting errors). For the other sections, Split_PPC is set True.
7304
7305 ---------------------------------------------
7306 -- 13.4 Enumeration representation clause --
7307 ---------------------------------------------
7308
7309 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
7310 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
7311
7312 -- In Ada 83, the name must be a direct name
7313
7314 -- N_Enumeration_Representation_Clause
7315 -- Sloc points to FOR
7316 -- Identifier (Node1) direct name
7317 -- Array_Aggregate (Node3)
7318 -- Next_Rep_Item (Node5-Sem)
7319
7320 ---------------------------------
7321 -- 13.4 Enumeration aggregate --
7322 ---------------------------------
7323
7324 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
7325
7326 ------------------------------------------
7327 -- 13.5.1 Record representation clause --
7328 ------------------------------------------
7329
7330 -- RECORD_REPRESENTATION_CLAUSE ::=
7331 -- for first_subtype_LOCAL_NAME use
7332 -- record [MOD_CLAUSE]
7333 -- {COMPONENT_CLAUSE}
7334 -- end record;
7335
7336 -- Gigi restriction: Mod_Clause is always Empty (if present it is
7337 -- replaced by a corresponding Alignment attribute definition clause).
7338
7339 -- Note: Component_Clauses can include pragmas
7340
7341 -- N_Record_Representation_Clause
7342 -- Sloc points to FOR
7343 -- Identifier (Node1) direct name
7344 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
7345 -- Component_Clauses (List3)
7346 -- Next_Rep_Item (Node5-Sem)
7347
7348 ------------------------------
7349 -- 13.5.1 Component clause --
7350 ------------------------------
7351
7352 -- COMPONENT_CLAUSE ::=
7353 -- component_LOCAL_NAME at POSITION
7354 -- range FIRST_BIT .. LAST_BIT;
7355
7356 -- N_Component_Clause
7357 -- Sloc points to AT
7358 -- Component_Name (Node1) points to Name or Attribute_Reference
7359 -- Position (Node2)
7360 -- First_Bit (Node3)
7361 -- Last_Bit (Node4)
7362
7363 ----------------------
7364 -- 13.5.1 Position --
7365 ----------------------
7366
7367 -- POSITION ::= static_EXPRESSION
7368
7369 -----------------------
7370 -- 13.5.1 First_Bit --
7371 -----------------------
7372
7373 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
7374
7375 ----------------------
7376 -- 13.5.1 Last_Bit --
7377 ----------------------
7378
7379 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
7380
7381 --------------------------
7382 -- 13.8 Code statement --
7383 --------------------------
7384
7385 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
7386
7387 -- Note: in GNAT, the qualified expression has the form
7388
7389 -- Asm_Insn'(Asm (...));
7390
7391 -- See package System.Machine_Code in file s-maccod.ads for details on
7392 -- the allowed parameters to Asm. There are two ways this node can
7393 -- arise, as a code statement, in which case the expression is the
7394 -- qualified expression, or as a result of the expansion of an intrinsic
7395 -- call to the Asm or Asm_Input procedure.
7396
7397 -- N_Code_Statement
7398 -- Sloc points to first token of the expression
7399 -- Expression (Node3)
7400
7401 -- Note: package Exp_Code contains an abstract functional interface
7402 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
7403
7404 ------------------------
7405 -- 13.12 Restriction --
7406 ------------------------
7407
7408 -- RESTRICTION ::=
7409 -- restriction_IDENTIFIER
7410 -- | restriction_parameter_IDENTIFIER => EXPRESSION
7411
7412 -- There is no explicit node for restrictions. Instead the restriction
7413 -- appears in normal pragma syntax as a pragma argument association,
7414 -- which has the same syntactic form.
7415
7416 --------------------------
7417 -- B.2 Shift Operators --
7418 --------------------------
7419
7420 -- Calls to the intrinsic shift functions are converted to one of
7421 -- the following shift nodes, which have the form of normal binary
7422 -- operator names. Note that for a given shift operation, one node
7423 -- covers all possible types, as for normal operators.
7424
7425 -- Note: it is perfectly permissible for the expander to generate
7426 -- shift operation nodes directly, in which case they will be analyzed
7427 -- and parsed in the usual manner.
7428
7429 -- Sprint syntax: shift-function-name!(expr, count)
7430
7431 -- Note: the Left_Opnd field holds the first argument (the value to
7432 -- be shifted). The Right_Opnd field holds the second argument (the
7433 -- shift count). The Chars field is the name of the intrinsic function.
7434
7435 -- N_Op_Rotate_Left
7436 -- Sloc points to the function name
7437 -- plus fields for binary operator
7438 -- plus fields for expression
7439 -- Shift_Count_OK (Flag4-Sem)
7440
7441 -- N_Op_Rotate_Right
7442 -- Sloc points to the function name
7443 -- plus fields for binary operator
7444 -- plus fields for expression
7445 -- Shift_Count_OK (Flag4-Sem)
7446
7447 -- N_Op_Shift_Left
7448 -- Sloc points to the function name
7449 -- plus fields for binary operator
7450 -- plus fields for expression
7451 -- Shift_Count_OK (Flag4-Sem)
7452
7453 -- N_Op_Shift_Right_Arithmetic
7454 -- Sloc points to the function name
7455 -- plus fields for binary operator
7456 -- plus fields for expression
7457 -- Shift_Count_OK (Flag4-Sem)
7458
7459 -- N_Op_Shift_Right
7460 -- Sloc points to the function name
7461 -- plus fields for binary operator
7462 -- plus fields for expression
7463 -- Shift_Count_OK (Flag4-Sem)
7464
7465 -- Note: N_Op_Rotate_Left, N_Op_Rotate_Right, N_Shift_Right_Arithmetic
7466 -- never appear in the expanded tree if Modify_Tree_For_C mode is set.
7467
7468 -- Note: For N_Op_Shift_Left and N_Op_Shift_Right, the right operand is
7469 -- always less than the word size if Modify_Tree_For_C mode is set.
7470
7471 --------------------------
7472 -- Obsolescent Features --
7473 --------------------------
7474
7475 -- The syntax descriptions and tree nodes for obsolescent features are
7476 -- grouped together, corresponding to their location in appendix I in
7477 -- the RM. However, parsing and semantic analysis for these constructs
7478 -- is located in an appropriate chapter (see individual notes).
7479
7480 ---------------------------
7481 -- J.3 Delta Constraint --
7482 ---------------------------
7483
7484 -- Note: the parse routine for this construct is located in section
7485 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
7486 -- where delta constraint logically belongs.
7487
7488 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
7489
7490 -- N_Delta_Constraint
7491 -- Sloc points to DELTA
7492 -- Delta_Expression (Node3)
7493 -- Range_Constraint (Node4) (set to Empty if not present)
7494
7495 --------------------
7496 -- J.7 At Clause --
7497 --------------------
7498
7499 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
7500
7501 -- Note: the parse routine for this construct is located in Par-Ch13,
7502 -- and the semantic analysis is in Sem_Ch13, where at clause logically
7503 -- belongs if it were not obsolescent.
7504
7505 -- Note: in Ada 83 the expression must be a simple expression
7506
7507 -- Gigi restriction: This node never appears, it is rewritten as an
7508 -- address attribute definition clause.
7509
7510 -- N_At_Clause
7511 -- Sloc points to FOR
7512 -- Identifier (Node1)
7513 -- Expression (Node3)
7514
7515 ---------------------
7516 -- J.8 Mod clause --
7517 ---------------------
7518
7519 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
7520
7521 -- Note: the parse routine for this construct is located in Par-Ch13,
7522 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
7523 -- belongs if it were not obsolescent.
7524
7525 -- Note: in Ada 83, the expression must be a simple expression
7526
7527 -- Gigi restriction: this node never appears. It is replaced
7528 -- by a corresponding Alignment attribute definition clause.
7529
7530 -- Note: pragmas can appear before and after the MOD_CLAUSE since
7531 -- its name has "clause" in it. This is rather strange, but is quite
7532 -- definitely specified. The pragmas before are collected in the
7533 -- Pragmas_Before field of the mod clause node itself, and pragmas
7534 -- after are simply swallowed up in the list of component clauses.
7535
7536 -- N_Mod_Clause
7537 -- Sloc points to AT
7538 -- Expression (Node3)
7539 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
7540
7541 --------------------
7542 -- Semantic Nodes --
7543 --------------------
7544
7545 -- These semantic nodes are used to hold additional semantic information.
7546 -- They are inserted into the tree as a result of semantic processing.
7547 -- Although there are no legitimate source syntax constructions that
7548 -- correspond directly to these nodes, we need a source syntax for the
7549 -- reconstructed tree printed by Sprint, and the node descriptions here
7550 -- show this syntax.
7551
7552 ------------------------
7553 -- Compound Statement --
7554 ------------------------
7555
7556 -- This node is created by the analyzer/expander to handle some
7557 -- expansion cases where a sequence of actions needs to be captured
7558 -- within a single node (which acts as a container and allows the
7559 -- entire list of actions to be moved around as a whole) appearing
7560 -- in a sequence of statements.
7561
7562 -- This is the statement counterpart to the expression node
7563 -- N_Expression_With_Actions.
7564
7565 -- The required semantics is that the set of actions is executed in
7566 -- the order in which it appears, as though they appeared by themselves
7567 -- in the enclosing list of declarations of statements. Unlike what
7568 -- happens when using an N_Block_Statement, no new scope is introduced.
7569
7570 -- Note: for the time being, this is used only as a transient
7571 -- representation during expansion, and all compound statement nodes
7572 -- must be exploded back to their constituent statements before handing
7573 -- the tree to the back end.
7574
7575 -- Sprint syntax: do
7576 -- action;
7577 -- action;
7578 -- ...
7579 -- action;
7580 -- end;
7581
7582 -- N_Compound_Statement
7583 -- Actions (List1)
7584
7585 --------------
7586 -- Contract --
7587 --------------
7588
7589 -- This node is used to hold the various parts of an entry, subprogram
7590 -- [body] or package [body] contract, in particular:
7591 -- Abstract states declared by a package declaration
7592 -- Contract cases that apply to a subprogram
7593 -- Dependency relations of inputs and output of a subprogram
7594 -- Global annotations classifying data as input or output
7595 -- Initialization sequences for a package declaration
7596 -- Pre- and postconditions that apply to a subprogram
7597
7598 -- The node appears in an entry and [generic] subprogram [body] entity.
7599
7600 -- Sprint syntax: <none> as the node should not appear in the tree, but
7601 -- only attached to an entry or [generic] subprogram
7602 -- entity.
7603
7604 -- N_Contract
7605 -- Sloc points to the subprogram's name
7606 -- Pre_Post_Conditions (Node1-Sem) (set to Empty if none)
7607 -- Contract_Test_Cases (Node2-Sem) (set to Empty if none)
7608 -- Classifications (Node3-Sem) (set to Empty if none)
7609 -- Is_Expanded_Contract (Flag1-Sem)
7610
7611 -- Pre_Post_Conditions contains a collection of pragmas that correspond
7612 -- to pre- and postconditions associated with an entry or a subprogram
7613 -- [body or stub]. The pragmas can either come from source or be the
7614 -- byproduct of aspect expansion. Currently the following pragmas appear
7615 -- in this list:
7616 -- Post
7617 -- Postcondition
7618 -- Pre
7619 -- Precondition
7620 -- Refined_Post
7621 -- The ordering in the list is in LIFO fashion.
7622
7623 -- Note that there might be multiple preconditions or postconditions
7624 -- in this list, either because they come from separate pragmas in the
7625 -- source, or because a Pre (resp. Post) aspect specification has been
7626 -- broken into AND THEN sections. See Split_PPC for details.
7627
7628 -- In GNATprove mode, the inherited classwide pre- and postconditions
7629 -- (suitably specialized for the specific type of the overriding
7630 -- operation) are also in this list.
7631
7632 -- Contract_Test_Cases contains a collection of pragmas that correspond
7633 -- to aspects/pragmas Contract_Cases and Test_Case. The ordering in the
7634 -- list is in LIFO fashion.
7635
7636 -- Classifications contains pragmas that either declare, categorize or
7637 -- establish dependencies between subprogram or package inputs and
7638 -- outputs. Currently the following pragmas appear in this list:
7639 -- Abstract_States
7640 -- Async_Readers
7641 -- Async_Writers
7642 -- Constant_After_Elaboration
7643 -- Depends
7644 -- Effective_Reads
7645 -- Effective_Writes
7646 -- Extensions_Visible
7647 -- Global
7648 -- Initial_Condition
7649 -- Initializes
7650 -- Part_Of
7651 -- Refined_Depends
7652 -- Refined_Global
7653 -- Refined_States
7654 -- Volatile_Function
7655 -- The ordering is in LIFO fashion.
7656
7657 -------------------
7658 -- Expanded Name --
7659 -------------------
7660
7661 -- The N_Expanded_Name node is used to represent a selected component
7662 -- name that has been resolved to an expanded name. The semantic phase
7663 -- replaces N_Selected_Component nodes that represent names by the use
7664 -- of this node, leaving the N_Selected_Component node used only when
7665 -- the prefix is a record or protected type.
7666
7667 -- The fields of the N_Expanded_Name node are layed out identically
7668 -- to those of the N_Selected_Component node, allowing conversion of
7669 -- an expanded name node to a selected component node to be done
7670 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
7671
7672 -- There is no special sprint syntax for an expanded name
7673
7674 -- N_Expanded_Name
7675 -- Sloc points to the period
7676 -- Chars (Name1) copy of Chars field of selector name
7677 -- Prefix (Node3)
7678 -- Selector_Name (Node2)
7679 -- Entity (Node4-Sem)
7680 -- Associated_Node (Node4-Sem)
7681 -- Has_Private_View (Flag11-Sem) set in generic units.
7682 -- Redundant_Use (Flag13-Sem)
7683 -- Atomic_Sync_Required (Flag14-Sem)
7684 -- plus fields for expression
7685
7686 -----------------------------
7687 -- Expression With Actions --
7688 -----------------------------
7689
7690 -- This node is created by the analyzer/expander to handle some
7691 -- expansion cases, notably short-circuit forms where there are
7692 -- actions associated with the right-hand side operand.
7693
7694 -- The N_Expression_With_Actions node represents an expression with
7695 -- an associated set of actions (which are executable statements and
7696 -- declarations, as might occur in a handled statement sequence).
7697
7698 -- The required semantics is that the set of actions is executed in
7699 -- the order in which it appears just before the expression is
7700 -- evaluated (and these actions must only be executed if the value
7701 -- of the expression is evaluated). The node is considered to be
7702 -- a subexpression, whose value is the value of the Expression after
7703 -- executing all the actions.
7704
7705 -- If the actions contain declarations, then these declarations may
7706 -- be referenced within the expression. However note that there is
7707 -- no proper scope associated with the expression-with-action, so the
7708 -- back-end will elaborate them in the context of the enclosing scope.
7709
7710 -- Sprint syntax: do
7711 -- action;
7712 -- action;
7713 -- ...
7714 -- action;
7715 -- in expression end
7716
7717 -- N_Expression_With_Actions
7718 -- Actions (List1)
7719 -- Expression (Node3)
7720 -- plus fields for expression
7721
7722 -- Note: In the final generated tree presented to the code generator,
7723 -- the actions list is always non-null, since there is no point in this
7724 -- node if the actions are Empty. During semantic analysis there are
7725 -- cases where it is convenient to temporarily generate an empty actions
7726 -- list. This arises in cases where we create such an empty actions
7727 -- list, and it may or may not end up being a place where additional
7728 -- actions are inserted. The expander removes such empty cases after
7729 -- the expression of the node is fully analyzed and expanded, at which
7730 -- point it is safe to remove it, since no more actions can be inserted.
7731
7732 -- Note: In Modify_Tree_For_C, we never generate any declarations in
7733 -- the action list, which can contain only non-declarative statements.
7734
7735 --------------------
7736 -- Free Statement --
7737 --------------------
7738
7739 -- The N_Free_Statement node is generated as a result of a call to an
7740 -- instantiation of Unchecked_Deallocation. The instantiation of this
7741 -- generic is handled specially and generates this node directly.
7742
7743 -- Sprint syntax: free expression
7744
7745 -- N_Free_Statement
7746 -- Sloc is copied from the unchecked deallocation call
7747 -- Expression (Node3) argument to unchecked deallocation call
7748 -- Storage_Pool (Node1-Sem)
7749 -- Procedure_To_Call (Node2-Sem)
7750 -- Actual_Designated_Subtype (Node4-Sem)
7751
7752 -- Note: in the case where a debug source file is generated, the Sloc
7753 -- for this node points to the FREE keyword in the Sprint file output.
7754
7755 -------------------
7756 -- Freeze Entity --
7757 -------------------
7758
7759 -- This node marks the point in a declarative part at which an entity
7760 -- declared therein becomes frozen. The expander places initialization
7761 -- procedures for types at those points. Gigi uses the freezing point
7762 -- to elaborate entities that may depend on previous private types.
7763
7764 -- See the section in Einfo "Delayed Freezing and Elaboration" for
7765 -- a full description of the use of this node.
7766
7767 -- The Entity field points back to the entity for the type (whose
7768 -- Freeze_Node field points back to this freeze node).
7769
7770 -- The Actions field contains a list of declarations and statements
7771 -- generated by the expander which are associated with the freeze
7772 -- node, and are elaborated as though the freeze node were replaced
7773 -- by this sequence of actions.
7774
7775 -- Note: the Sloc field in the freeze node references a construct
7776 -- associated with the freezing point. This is used for posting
7777 -- messages in some error/warning situations, e.g. the case where
7778 -- a primitive operation of a tagged type is declared too late.
7779
7780 -- Sprint syntax: freeze entity-name [
7781 -- freeze actions
7782 -- ]
7783
7784 -- N_Freeze_Entity
7785 -- Sloc points near freeze point (see above special note)
7786 -- Entity (Node4-Sem)
7787 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
7788 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
7789 -- Actions (List1) (set to No_List if no freeze actions)
7790 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
7791
7792 -- The Actions field holds actions associated with the freeze. These
7793 -- actions are elaborated at the point where the type is frozen.
7794
7795 -- Note: in the case where a debug source file is generated, the Sloc
7796 -- for this node points to the FREEZE keyword in the Sprint file output.
7797
7798 ---------------------------
7799 -- Freeze Generic Entity --
7800 ---------------------------
7801
7802 -- The freeze point of an entity indicates the point at which the
7803 -- information needed to generate code for the entity is complete.
7804 -- The freeze node for an entity triggers expander activities, such as
7805 -- build initialization procedures, and backend activities, such as
7806 -- completing the elaboration of packages.
7807
7808 -- For entities declared within a generic unit, for which no code is
7809 -- generated, the freeze point is not equally meaningful. However, in
7810 -- Ada 2012 several semantic checks on declarations must be delayed to
7811 -- the freeze point, and we need to include such a mark in the tree to
7812 -- trigger these checks. The Freeze_Generic_Entity node plays no other
7813 -- role, and is ignored by the expander and the back-end.
7814
7815 -- Sprint syntax: freeze_generic entity-name
7816
7817 -- N_Freeze_Generic_Entity
7818 -- Sloc points near freeze point
7819 -- Entity (Node4-Sem)
7820
7821 --------------------------------
7822 -- Implicit Label Declaration --
7823 --------------------------------
7824
7825 -- An implicit label declaration is created for every occurrence of a
7826 -- label on a statement or a label on a block or loop. It is chained
7827 -- in the declarations of the innermost enclosing block as specified
7828 -- in RM section 5.1 (3).
7829
7830 -- The Defining_Identifier is the actual identifier for the statement
7831 -- identifier. Note that the occurrence of the label is a reference, NOT
7832 -- the defining occurrence. The defining occurrence occurs at the head
7833 -- of the innermost enclosing block, and is represented by this node.
7834
7835 -- Note: from the grammar, this might better be called an implicit
7836 -- statement identifier declaration, but the term we choose seems
7837 -- friendlier, since at least informally statement identifiers are
7838 -- called labels in both cases (i.e. when used in labels, and when
7839 -- used as the identifiers of blocks and loops).
7840
7841 -- Note: although this is logically a semantic node, since it does not
7842 -- correspond directly to a source syntax construction, these nodes are
7843 -- actually created by the parser in a post pass done just after parsing
7844 -- is complete, before semantic analysis is started (see Par.Labl).
7845
7846 -- Sprint syntax: labelname : label;
7847
7848 -- N_Implicit_Label_Declaration
7849 -- Sloc points to the << token for a statement identifier, or to the
7850 -- LOOP, DECLARE, or BEGIN token for a loop or block identifier
7851 -- Defining_Identifier (Node1)
7852 -- Label_Construct (Node2-Sem)
7853
7854 -- Note: in the case where a debug source file is generated, the Sloc
7855 -- for this node points to the label name in the generated declaration.
7856
7857 ---------------------
7858 -- Itype Reference --
7859 ---------------------
7860
7861 -- This node is used to create a reference to an Itype. The only purpose
7862 -- is to make sure the Itype is defined if this is the first reference.
7863
7864 -- A typical use of this node is when an Itype is to be referenced in
7865 -- two branches of an IF statement. In this case it is important that
7866 -- the first use of the Itype not be inside the conditional, since then
7867 -- it might not be defined if the other branch of the IF is taken, in
7868 -- the case where the definition generates elaboration code.
7869
7870 -- The Itype field points to the referenced Itype
7871
7872 -- Sprint syntax: reference itype-name
7873
7874 -- N_Itype_Reference
7875 -- Sloc points to the node generating the reference
7876 -- Itype (Node1-Sem)
7877
7878 -- Note: in the case where a debug source file is generated, the Sloc
7879 -- for this node points to the REFERENCE keyword in the file output.
7880
7881 ---------------------
7882 -- Raise xxx Error --
7883 ---------------------
7884
7885 -- One of these nodes is created during semantic analysis to replace
7886 -- a node for an expression that is determined to definitely raise
7887 -- the corresponding exception.
7888
7889 -- The N_Raise_xxx_Error node may also stand alone in place
7890 -- of a declaration or statement, in which case it simply causes
7891 -- the exception to be raised (i.e. it is equivalent to a raise
7892 -- statement that raises the corresponding exception). This use
7893 -- is distinguished by the fact that the Etype in this case is
7894 -- Standard_Void_Type; in the subexpression case, the Etype is the
7895 -- same as the type of the subexpression which it replaces.
7896
7897 -- If Condition is empty, then the raise is unconditional. If the
7898 -- Condition field is non-empty, it is a boolean expression which is
7899 -- first evaluated, and the exception is raised only if the value of the
7900 -- expression is True. In the unconditional case, the creation of this
7901 -- node is usually accompanied by a warning message (unless it appears
7902 -- within the right operand of a short-circuit form whose left argument
7903 -- is static and decisively eliminates elaboration of the raise
7904 -- operation). The condition field can ONLY be present when the node is
7905 -- used as a statement form; it must NOT be present in the case where
7906 -- the node appears within an expression.
7907
7908 -- The exception is generated with a message that contains the
7909 -- file name and line number, and then appended text. The Reason
7910 -- code shows the text to be added. The Reason code is an element
7911 -- of the type Types.RT_Exception_Code, and indicates both the
7912 -- message to be added, and the exception to be raised (which must
7913 -- match the node type). The value is stored by storing a Uint which
7914 -- is the Pos value of the enumeration element in this type.
7915
7916 -- Gigi restriction: This expander ensures that the type of the
7917 -- Condition field is always Standard.Boolean, even if the type
7918 -- in the source is some non-standard boolean type.
7919
7920 -- Sprint syntax: [xxx_error "msg"]
7921 -- or: [xxx_error when condition "msg"]
7922
7923 -- N_Raise_Constraint_Error
7924 -- Sloc references related construct
7925 -- Condition (Node1) (set to Empty if no condition)
7926 -- Reason (Uint3)
7927 -- plus fields for expression
7928
7929 -- N_Raise_Program_Error
7930 -- Sloc references related construct
7931 -- Condition (Node1) (set to Empty if no condition)
7932 -- Reason (Uint3)
7933 -- plus fields for expression
7934
7935 -- N_Raise_Storage_Error
7936 -- Sloc references related construct
7937 -- Condition (Node1) (set to Empty if no condition)
7938 -- Reason (Uint3)
7939 -- plus fields for expression
7940
7941 -- Note: Sloc is copied from the expression generating the exception.
7942 -- In the case where a debug source file is generated, the Sloc for
7943 -- this node points to the left bracket in the Sprint file output.
7944
7945 -- Note: the back end may be required to translate these nodes into
7946 -- appropriate goto statements. See description of N_Push/Pop_xxx_Label.
7947
7948 ---------------------------------------------
7949 -- Optimization of Exception Raise to Goto --
7950 ---------------------------------------------
7951
7952 -- In some cases, the front end will determine that any exception raised
7953 -- by the back end for a certain exception should be transformed into a
7954 -- goto statement.
7955
7956 -- There are three kinds of exceptions raised by the back end (note that
7957 -- for this purpose we consider gigi to be part of the back end in the
7958 -- gcc case):
7959
7960 -- 1. Exceptions resulting from N_Raise_xxx_Error nodes
7961 -- 2. Exceptions from checks triggered by Do_xxx_Check flags
7962 -- 3. Other cases not specifically marked by the front end
7963
7964 -- Normally all such exceptions are translated into calls to the proper
7965 -- Rcheck_xx procedure, where xx encodes both the exception to be raised
7966 -- and the exception message.
7967
7968 -- The front end may determine that for a particular sequence of code,
7969 -- exceptions in any of these three categories for a particular builtin
7970 -- exception should result in a goto, rather than a call to Rcheck_xx.
7971 -- The exact sequence to be generated is:
7972
7973 -- Local_Raise (exception'Identity);
7974 -- goto Label
7975
7976 -- The front end marks such a sequence of code by bracketing it with
7977 -- push and pop nodes:
7978
7979 -- N_Push_xxx_Label (referencing the label)
7980 -- ...
7981 -- (code where transformation is expected for exception xxx)
7982 -- ...
7983 -- N_Pop_xxx_Label
7984
7985 -- The use of push/pop reflects the fact that such regions can properly
7986 -- nest, and one special case is a subregion in which no transformation
7987 -- is allowed. Such a region is marked by a N_Push_xxx_Label node whose
7988 -- Exception_Label field is Empty.
7989
7990 -- N_Push_Constraint_Error_Label
7991 -- Sloc references first statement in region covered
7992 -- Exception_Label (Node5-Sem)
7993
7994 -- N_Push_Program_Error_Label
7995 -- Sloc references first statement in region covered
7996 -- Exception_Label (Node5-Sem)
7997
7998 -- N_Push_Storage_Error_Label
7999 -- Sloc references first statement in region covered
8000 -- Exception_Label (Node5-Sem)
8001
8002 -- N_Pop_Constraint_Error_Label
8003 -- Sloc references last statement in region covered
8004
8005 -- N_Pop_Program_Error_Label
8006 -- Sloc references last statement in region covered
8007
8008 -- N_Pop_Storage_Error_Label
8009 -- Sloc references last statement in region covered
8010
8011 ---------------
8012 -- Reference --
8013 ---------------
8014
8015 -- For a number of purposes, we need to construct references to objects.
8016 -- These references are subsequently treated as normal access values.
8017 -- An example is the construction of the parameter block passed to a
8018 -- task entry. The N_Reference node is provided for this purpose. It is
8019 -- similar in effect to the use of the Unrestricted_Access attribute,
8020 -- and like Unrestricted_Access can be applied to objects which would
8021 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
8022 -- objects which are not aliased, and slices). In addition it can be
8023 -- applied to composite type values as well as objects, including string
8024 -- values and aggregates.
8025
8026 -- Note: we use the Prefix field for this expression so that the
8027 -- resulting node can be treated using common code with the attribute
8028 -- nodes for the 'Access and related attributes. Logically it would make
8029 -- more sense to call it an Expression field, but then we would have to
8030 -- special case the treatment of the N_Reference node.
8031
8032 -- Note: evaluating a N_Reference node is guaranteed to yield a non-null
8033 -- value at run time. Therefore, it is valid to set Is_Known_Non_Null on
8034 -- a temporary initialized to a N_Reference node in order to eliminate
8035 -- superfluous access checks.
8036
8037 -- Sprint syntax: prefix'reference
8038
8039 -- N_Reference
8040 -- Sloc is copied from the expression
8041 -- Prefix (Node3)
8042 -- plus fields for expression
8043
8044 -- Note: in the case where a debug source file is generated, the Sloc
8045 -- for this node points to the quote in the Sprint file output.
8046
8047 ----------------
8048 -- SCIL Nodes --
8049 ----------------
8050
8051 -- SCIL nodes are special nodes added to the tree when the CodePeer mode
8052 -- is active. They are only generated if SCIL generation is enabled.
8053 -- A standard tree-walk will not encounter these nodes even if they
8054 -- are present; these nodes are only accessible via the function
8055 -- SCIL_LL.Get_SCIL_Node. These nodes have no associated dynamic
8056 -- semantics.
8057
8058 -- Sprint syntax: [ <node kind> ]
8059 -- No semantic field values are displayed.
8060
8061 -- N_SCIL_Dispatch_Table_Tag_Init
8062 -- Sloc references a node for a tag initialization
8063 -- SCIL_Entity (Node4-Sem)
8064 --
8065 -- An N_SCIL_Dispatch_Table_Tag_Init node may be associated (via
8066 -- Get_SCIL_Node) with the N_Object_Declaration node corresponding to
8067 -- the declaration of the dispatch table for a tagged type.
8068
8069 -- N_SCIL_Dispatching_Call
8070 -- Sloc references the node of a dispatching call
8071 -- SCIL_Target_Prim (Node2-Sem)
8072 -- SCIL_Entity (Node4-Sem)
8073 -- SCIL_Controlling_Tag (Node5-Sem)
8074 --
8075 -- An N_Scil_Dispatching call node may be associated (via Get_SCIL_Node)
8076 -- with the N_Procedure_Call_Statement or N_Function_Call node (or a
8077 -- rewriting thereof) corresponding to a dispatching call.
8078
8079 -- N_SCIL_Membership_Test
8080 -- Sloc references the node of a membership test
8081 -- SCIL_Tag_Value (Node5-Sem)
8082 -- SCIL_Entity (Node4-Sem)
8083 --
8084 -- An N_Scil_Membership_Test node may be associated (via Get_SCIL_Node)
8085 -- with the N_In node (or a rewriting thereof) corresponding to a
8086 -- classwide membership test.
8087
8088 --------------------------
8089 -- Unchecked Expression --
8090 --------------------------
8091
8092 -- An unchecked expression is one that must be analyzed and resolved
8093 -- with all checks off, regardless of the current setting of scope
8094 -- suppress flags.
8095
8096 -- Sprint syntax: `(expression)
8097
8098 -- Note: this node is always removed from the tree (and replaced by
8099 -- its constituent expression) on completion of analysis, so it only
8100 -- appears in intermediate trees, and will never be seen by Gigi.
8101
8102 -- N_Unchecked_Expression
8103 -- Sloc is a copy of the Sloc of the expression
8104 -- Expression (Node3)
8105 -- plus fields for expression
8106
8107 -- Note: in the case where a debug source file is generated, the Sloc
8108 -- for this node points to the back quote in the Sprint file output.
8109
8110 -------------------------------
8111 -- Unchecked Type Conversion --
8112 -------------------------------
8113
8114 -- An unchecked type conversion node represents the semantic action
8115 -- corresponding to a call to an instantiation of Unchecked_Conversion.
8116 -- It is generated as a result of actual use of Unchecked_Conversion
8117 -- and also the expander generates unchecked type conversion nodes
8118 -- directly for expansion of complex semantic actions.
8119
8120 -- Note: an unchecked type conversion is a variable as far as the
8121 -- semantics are concerned, which is convenient for the expander.
8122 -- This does not change what Ada source programs are legal, since
8123 -- clearly a function call to an instantiation of Unchecked_Conversion
8124 -- is not a variable in any case.
8125
8126 -- Sprint syntax: subtype-mark!(expression)
8127
8128 -- N_Unchecked_Type_Conversion
8129 -- Sloc points to related node in source
8130 -- Subtype_Mark (Node4)
8131 -- Expression (Node3)
8132 -- Kill_Range_Check (Flag11-Sem)
8133 -- No_Truncation (Flag17-Sem)
8134 -- plus fields for expression
8135
8136 -- Note: in the case where a debug source file is generated, the Sloc
8137 -- for this node points to the exclamation in the Sprint file output.
8138
8139 -----------------------------------
8140 -- Validate_Unchecked_Conversion --
8141 -----------------------------------
8142
8143 -- The front end does most of the validation of unchecked conversion,
8144 -- including checking sizes (this is done after the back end is called
8145 -- to take advantage of back-annotation of calculated sizes).
8146
8147 -- The front end also deals with specific cases that are not allowed
8148 -- e.g. involving unconstrained array types.
8149
8150 -- For the case of the standard gigi backend, this means that all
8151 -- checks are done in the front end.
8152
8153 -- However, in the case of specialized back-ends, in particular the JVM
8154 -- backend in the past, additional requirements and restrictions may
8155 -- apply to unchecked conversion, and these are most conveniently
8156 -- performed in the specialized back-end.
8157
8158 -- To accommodate this requirement, for such back ends, the following
8159 -- special node is generated recording an unchecked conversion that
8160 -- needs to be validated. The back end should post an appropriate
8161 -- error message if the unchecked conversion is invalid or warrants
8162 -- a special warning message.
8163
8164 -- Source_Type and Target_Type point to the entities for the two
8165 -- types involved in the unchecked conversion instantiation that
8166 -- is to be validated.
8167
8168 -- Sprint syntax: validate Unchecked_Conversion (source, target);
8169
8170 -- N_Validate_Unchecked_Conversion
8171 -- Sloc points to instantiation (location for warning message)
8172 -- Source_Type (Node1-Sem)
8173 -- Target_Type (Node2-Sem)
8174
8175 -- Note: in the case where a debug source file is generated, the Sloc
8176 -- for this node points to the VALIDATE keyword in the file output.
8177
8178 -----------
8179 -- Empty --
8180 -----------
8181
8182 -- Used as the contents of the Nkind field of the dummy Empty node
8183 -- and in some other situations to indicate an uninitialized value.
8184
8185 -- N_Empty
8186 -- Chars (Name1) is set to No_Name
8187
8188 -----------
8189 -- Error --
8190 -----------
8191
8192 -- Used as the contents of the Nkind field of the dummy Error node.
8193 -- Has an Etype field, which gets set to Any_Type later on, to help
8194 -- error recovery (Error_Posted is also set in the Error node).
8195
8196 -- N_Error
8197 -- Chars (Name1) is set to Error_Name
8198 -- Etype (Node5-Sem)
8199
8200 --------------------------
8201 -- Node Type Definition --
8202 --------------------------
8203
8204 -- The following is the definition of the Node_Kind type. As previously
8205 -- discussed, this is separated off to allow rearrangement of the order to
8206 -- facilitate definition of subtype ranges. The comments show the subtype
8207 -- classes which apply to each set of node kinds. The first entry in the
8208 -- comment characterizes the following list of nodes.
8209
8210 type Node_Kind is (
8211 N_Unused_At_Start,
8212
8213 -- N_Representation_Clause
8214
8215 N_At_Clause,
8216 N_Component_Clause,
8217 N_Enumeration_Representation_Clause,
8218 N_Mod_Clause,
8219 N_Record_Representation_Clause,
8220
8221 -- N_Representation_Clause, N_Has_Chars
8222
8223 N_Attribute_Definition_Clause,
8224
8225 -- N_Has_Chars
8226
8227 N_Empty,
8228 N_Pragma_Argument_Association,
8229
8230 -- N_Has_Etype, N_Has_Chars
8231
8232 -- Note: of course N_Error does not really have Etype or Chars fields,
8233 -- and any attempt to access these fields in N_Error will cause an
8234 -- error, but historically this always has been positioned so that an
8235 -- "in N_Has_Chars" or "in N_Has_Etype" test yields true for N_Error.
8236 -- Most likely this makes coding easier somewhere but still seems
8237 -- undesirable. To be investigated some time ???
8238
8239 N_Error,
8240
8241 -- N_Entity, N_Has_Etype, N_Has_Chars
8242
8243 N_Defining_Character_Literal,
8244 N_Defining_Identifier,
8245 N_Defining_Operator_Symbol,
8246
8247 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
8248
8249 N_Expanded_Name,
8250
8251 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
8252 -- N_Has_Chars, N_Has_Entity
8253
8254 N_Identifier,
8255 N_Operator_Symbol,
8256
8257 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
8258 -- N_Has_Chars, N_Has_Entity
8259
8260 N_Character_Literal,
8261
8262 -- N_Binary_Op, N_Op, N_Subexpr,
8263 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
8264
8265 N_Op_Add,
8266 N_Op_Concat,
8267 N_Op_Expon,
8268 N_Op_Subtract,
8269
8270 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
8271 -- N_Has_Etype, N_Has_Chars, N_Has_Entity, N_Multiplying_Operator
8272
8273 N_Op_Divide,
8274 N_Op_Mod,
8275 N_Op_Multiply,
8276 N_Op_Rem,
8277
8278 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
8279 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
8280
8281 N_Op_And,
8282
8283 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
8284 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean, N_Op_Compare
8285
8286 N_Op_Eq,
8287 N_Op_Ge,
8288 N_Op_Gt,
8289 N_Op_Le,
8290 N_Op_Lt,
8291 N_Op_Ne,
8292
8293 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
8294 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
8295
8296 N_Op_Or,
8297 N_Op_Xor,
8298
8299 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
8300 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
8301
8302 N_Op_Rotate_Left,
8303 N_Op_Rotate_Right,
8304 N_Op_Shift_Left,
8305 N_Op_Shift_Right,
8306 N_Op_Shift_Right_Arithmetic,
8307
8308 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
8309 -- N_Has_Chars, N_Has_Entity
8310
8311 N_Op_Abs,
8312 N_Op_Minus,
8313 N_Op_Not,
8314 N_Op_Plus,
8315
8316 -- N_Subexpr, N_Has_Etype, N_Has_Entity
8317
8318 N_Attribute_Reference,
8319
8320 -- N_Subexpr, N_Has_Etype, N_Membership_Test
8321
8322 N_In,
8323 N_Not_In,
8324
8325 -- N_Subexpr, N_Has_Etype, N_Short_Circuit
8326
8327 N_And_Then,
8328 N_Or_Else,
8329
8330 -- N_Subexpr, N_Has_Etype, N_Subprogram_Call
8331
8332 N_Function_Call,
8333 N_Procedure_Call_Statement,
8334
8335 -- N_Subexpr, N_Has_Etype, N_Raise_xxx_Error
8336
8337 N_Raise_Constraint_Error,
8338 N_Raise_Program_Error,
8339 N_Raise_Storage_Error,
8340
8341 -- N_Subexpr, N_Has_Etype, N_Numeric_Or_String_Literal
8342
8343 N_Integer_Literal,
8344 N_Real_Literal,
8345 N_String_Literal,
8346
8347 -- N_Subexpr, N_Has_Etype
8348
8349 N_Explicit_Dereference,
8350 N_Expression_With_Actions,
8351 N_If_Expression,
8352 N_Indexed_Component,
8353 N_Null,
8354 N_Qualified_Expression,
8355 N_Quantified_Expression,
8356 N_Aggregate,
8357 N_Allocator,
8358 N_Case_Expression,
8359 N_Extension_Aggregate,
8360 N_Raise_Expression,
8361 N_Range,
8362 N_Reference,
8363 N_Selected_Component,
8364 N_Slice,
8365 N_Type_Conversion,
8366 N_Unchecked_Expression,
8367 N_Unchecked_Type_Conversion,
8368
8369 -- N_Has_Etype
8370
8371 N_Subtype_Indication,
8372
8373 -- N_Declaration
8374
8375 N_Component_Declaration,
8376 N_Entry_Declaration,
8377 N_Expression_Function,
8378 N_Formal_Object_Declaration,
8379 N_Formal_Type_Declaration,
8380 N_Full_Type_Declaration,
8381 N_Incomplete_Type_Declaration,
8382 N_Iterator_Specification,
8383 N_Loop_Parameter_Specification,
8384 N_Object_Declaration,
8385 N_Protected_Type_Declaration,
8386 N_Private_Extension_Declaration,
8387 N_Private_Type_Declaration,
8388 N_Subtype_Declaration,
8389
8390 -- N_Subprogram_Specification, N_Declaration
8391
8392 N_Function_Specification,
8393 N_Procedure_Specification,
8394
8395 -- N_Access_To_Subprogram_Definition
8396
8397 N_Access_Function_Definition,
8398 N_Access_Procedure_Definition,
8399
8400 -- N_Later_Decl_Item
8401
8402 N_Task_Type_Declaration,
8403
8404 -- N_Body_Stub, N_Later_Decl_Item
8405
8406 N_Package_Body_Stub,
8407 N_Protected_Body_Stub,
8408 N_Subprogram_Body_Stub,
8409 N_Task_Body_Stub,
8410
8411 -- N_Generic_Instantiation, N_Later_Decl_Item
8412 -- N_Subprogram_Instantiation
8413
8414 N_Function_Instantiation,
8415 N_Procedure_Instantiation,
8416
8417 -- N_Generic_Instantiation, N_Later_Decl_Item
8418
8419 N_Package_Instantiation,
8420
8421 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
8422
8423 N_Package_Body,
8424 N_Subprogram_Body,
8425
8426 -- N_Later_Decl_Item, N_Proper_Body
8427
8428 N_Protected_Body,
8429 N_Task_Body,
8430
8431 -- N_Later_Decl_Item
8432
8433 N_Implicit_Label_Declaration,
8434 N_Package_Declaration,
8435 N_Single_Task_Declaration,
8436 N_Subprogram_Declaration,
8437 N_Use_Package_Clause,
8438
8439 -- N_Generic_Declaration, N_Later_Decl_Item
8440
8441 N_Generic_Package_Declaration,
8442 N_Generic_Subprogram_Declaration,
8443
8444 -- N_Array_Type_Definition
8445
8446 N_Constrained_Array_Definition,
8447 N_Unconstrained_Array_Definition,
8448
8449 -- N_Renaming_Declaration
8450
8451 N_Exception_Renaming_Declaration,
8452 N_Object_Renaming_Declaration,
8453 N_Package_Renaming_Declaration,
8454 N_Subprogram_Renaming_Declaration,
8455
8456 -- N_Generic_Renaming_Declaration, N_Renaming_Declaration
8457
8458 N_Generic_Function_Renaming_Declaration,
8459 N_Generic_Package_Renaming_Declaration,
8460 N_Generic_Procedure_Renaming_Declaration,
8461
8462 -- N_Statement_Other_Than_Procedure_Call
8463
8464 N_Abort_Statement,
8465 N_Accept_Statement,
8466 N_Assignment_Statement,
8467 N_Asynchronous_Select,
8468 N_Block_Statement,
8469 N_Case_Statement,
8470 N_Code_Statement,
8471 N_Compound_Statement,
8472 N_Conditional_Entry_Call,
8473
8474 -- N_Statement_Other_Than_Procedure_Call, N_Delay_Statement
8475
8476 N_Delay_Relative_Statement,
8477 N_Delay_Until_Statement,
8478
8479 -- N_Statement_Other_Than_Procedure_Call
8480
8481 N_Entry_Call_Statement,
8482 N_Free_Statement,
8483 N_Goto_Statement,
8484 N_Loop_Statement,
8485 N_Null_Statement,
8486 N_Raise_Statement,
8487 N_Requeue_Statement,
8488 N_Simple_Return_Statement,
8489 N_Extended_Return_Statement,
8490 N_Selective_Accept,
8491 N_Timed_Entry_Call,
8492
8493 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
8494
8495 N_Exit_Statement,
8496 N_If_Statement,
8497
8498 -- N_Has_Condition
8499
8500 N_Accept_Alternative,
8501 N_Delay_Alternative,
8502 N_Elsif_Part,
8503 N_Entry_Body_Formal_Part,
8504 N_Iteration_Scheme,
8505 N_Terminate_Alternative,
8506
8507 -- N_Formal_Subprogram_Declaration
8508
8509 N_Formal_Abstract_Subprogram_Declaration,
8510 N_Formal_Concrete_Subprogram_Declaration,
8511
8512 -- N_Push_xxx_Label, N_Push_Pop_xxx_Label
8513
8514 N_Push_Constraint_Error_Label,
8515 N_Push_Program_Error_Label,
8516 N_Push_Storage_Error_Label,
8517
8518 -- N_Pop_xxx_Label, N_Push_Pop_xxx_Label
8519
8520 N_Pop_Constraint_Error_Label,
8521 N_Pop_Program_Error_Label,
8522 N_Pop_Storage_Error_Label,
8523
8524 -- SCIL nodes
8525
8526 N_SCIL_Dispatch_Table_Tag_Init,
8527 N_SCIL_Dispatching_Call,
8528 N_SCIL_Membership_Test,
8529
8530 -- Other nodes (not part of any subtype class)
8531
8532 N_Abortable_Part,
8533 N_Abstract_Subprogram_Declaration,
8534 N_Access_Definition,
8535 N_Access_To_Object_Definition,
8536 N_Aspect_Specification,
8537 N_Case_Expression_Alternative,
8538 N_Case_Statement_Alternative,
8539 N_Compilation_Unit,
8540 N_Compilation_Unit_Aux,
8541 N_Component_Association,
8542 N_Component_Definition,
8543 N_Component_List,
8544 N_Contract,
8545 N_Derived_Type_Definition,
8546 N_Decimal_Fixed_Point_Definition,
8547 N_Defining_Program_Unit_Name,
8548 N_Delta_Constraint,
8549 N_Designator,
8550 N_Digits_Constraint,
8551 N_Discriminant_Association,
8552 N_Discriminant_Specification,
8553 N_Enumeration_Type_Definition,
8554 N_Entry_Body,
8555 N_Entry_Call_Alternative,
8556 N_Entry_Index_Specification,
8557 N_Exception_Declaration,
8558 N_Exception_Handler,
8559 N_Floating_Point_Definition,
8560 N_Formal_Decimal_Fixed_Point_Definition,
8561 N_Formal_Derived_Type_Definition,
8562 N_Formal_Discrete_Type_Definition,
8563 N_Formal_Floating_Point_Definition,
8564 N_Formal_Modular_Type_Definition,
8565 N_Formal_Ordinary_Fixed_Point_Definition,
8566 N_Formal_Package_Declaration,
8567 N_Formal_Private_Type_Definition,
8568 N_Formal_Incomplete_Type_Definition,
8569 N_Formal_Signed_Integer_Type_Definition,
8570 N_Freeze_Entity,
8571 N_Freeze_Generic_Entity,
8572 N_Generic_Association,
8573 N_Handled_Sequence_Of_Statements,
8574 N_Index_Or_Discriminant_Constraint,
8575 N_Itype_Reference,
8576 N_Label,
8577 N_Modular_Type_Definition,
8578 N_Number_Declaration,
8579 N_Ordinary_Fixed_Point_Definition,
8580 N_Others_Choice,
8581 N_Package_Specification,
8582 N_Parameter_Association,
8583 N_Parameter_Specification,
8584 N_Pragma,
8585 N_Protected_Definition,
8586 N_Range_Constraint,
8587 N_Real_Range_Specification,
8588 N_Record_Definition,
8589 N_Signed_Integer_Type_Definition,
8590 N_Single_Protected_Declaration,
8591 N_Subunit,
8592 N_Task_Definition,
8593 N_Triggering_Alternative,
8594 N_Use_Type_Clause,
8595 N_Validate_Unchecked_Conversion,
8596 N_Variant,
8597 N_Variant_Part,
8598 N_With_Clause,
8599 N_Unused_At_End);
8600
8601 for Node_Kind'Size use 8;
8602 -- The data structures in Atree assume this
8603
8604 ----------------------------
8605 -- Node Class Definitions --
8606 ----------------------------
8607
8608 subtype N_Access_To_Subprogram_Definition is Node_Kind range
8609 N_Access_Function_Definition ..
8610 N_Access_Procedure_Definition;
8611
8612 subtype N_Array_Type_Definition is Node_Kind range
8613 N_Constrained_Array_Definition ..
8614 N_Unconstrained_Array_Definition;
8615
8616 subtype N_Binary_Op is Node_Kind range
8617 N_Op_Add ..
8618 N_Op_Shift_Right_Arithmetic;
8619
8620 subtype N_Body_Stub is Node_Kind range
8621 N_Package_Body_Stub ..
8622 N_Task_Body_Stub;
8623
8624 subtype N_Declaration is Node_Kind range
8625 N_Component_Declaration ..
8626 N_Procedure_Specification;
8627 -- Note: this includes all constructs normally thought of as declarations
8628 -- except those which are separately grouped as later declarations.
8629
8630 subtype N_Delay_Statement is Node_Kind range
8631 N_Delay_Relative_Statement ..
8632 N_Delay_Until_Statement;
8633
8634 subtype N_Direct_Name is Node_Kind range
8635 N_Identifier ..
8636 N_Character_Literal;
8637
8638 subtype N_Entity is Node_Kind range
8639 N_Defining_Character_Literal ..
8640 N_Defining_Operator_Symbol;
8641
8642 subtype N_Formal_Subprogram_Declaration is Node_Kind range
8643 N_Formal_Abstract_Subprogram_Declaration ..
8644 N_Formal_Concrete_Subprogram_Declaration;
8645
8646 subtype N_Generic_Declaration is Node_Kind range
8647 N_Generic_Package_Declaration ..
8648 N_Generic_Subprogram_Declaration;
8649
8650 subtype N_Generic_Instantiation is Node_Kind range
8651 N_Function_Instantiation ..
8652 N_Package_Instantiation;
8653
8654 subtype N_Generic_Renaming_Declaration is Node_Kind range
8655 N_Generic_Function_Renaming_Declaration ..
8656 N_Generic_Procedure_Renaming_Declaration;
8657
8658 subtype N_Has_Chars is Node_Kind range
8659 N_Attribute_Definition_Clause ..
8660 N_Op_Plus;
8661
8662 subtype N_Has_Entity is Node_Kind range
8663 N_Expanded_Name ..
8664 N_Attribute_Reference;
8665 -- Nodes that have Entity fields
8666 -- Warning: DOES NOT INCLUDE N_Freeze_Entity, N_Freeze_Generic_Entity,
8667 -- N_Aspect_Specification, or N_Attribute_Definition_Clause.
8668
8669 subtype N_Has_Etype is Node_Kind range
8670 N_Error ..
8671 N_Subtype_Indication;
8672
8673 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
8674 N_Op_Divide ..
8675 N_Op_Rem;
8676
8677 subtype N_Multiplying_Operator is Node_Kind range
8678 N_Op_Divide ..
8679 N_Op_Rem;
8680
8681 subtype N_Later_Decl_Item is Node_Kind range
8682 N_Task_Type_Declaration ..
8683 N_Generic_Subprogram_Declaration;
8684 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and includes
8685 -- only those items which can appear as later declarative items. This also
8686 -- includes N_Implicit_Label_Declaration which is not specifically in the
8687 -- grammar but may appear as a valid later declarative items. It does NOT
8688 -- include N_Pragma which can also appear among later declarative items.
8689 -- It does however include N_Protected_Body, which is a bit peculiar, but
8690 -- harmless since this cannot appear in Ada 83 mode anyway.
8691
8692 subtype N_Membership_Test is Node_Kind range
8693 N_In ..
8694 N_Not_In;
8695
8696 subtype N_Numeric_Or_String_Literal is Node_Kind range
8697 N_Integer_Literal ..
8698 N_String_Literal;
8699
8700 subtype N_Op is Node_Kind range
8701 N_Op_Add ..
8702 N_Op_Plus;
8703
8704 subtype N_Op_Boolean is Node_Kind range
8705 N_Op_And ..
8706 N_Op_Xor;
8707 -- Binary operators which take operands of a boolean type, and yield
8708 -- a result of a boolean type.
8709
8710 subtype N_Op_Compare is Node_Kind range
8711 N_Op_Eq ..
8712 N_Op_Ne;
8713
8714 subtype N_Op_Shift is Node_Kind range
8715 N_Op_Rotate_Left ..
8716 N_Op_Shift_Right_Arithmetic;
8717
8718 subtype N_Proper_Body is Node_Kind range
8719 N_Package_Body ..
8720 N_Task_Body;
8721
8722 subtype N_Push_xxx_Label is Node_Kind range
8723 N_Push_Constraint_Error_Label ..
8724 N_Push_Storage_Error_Label;
8725
8726 subtype N_Pop_xxx_Label is Node_Kind range
8727 N_Pop_Constraint_Error_Label ..
8728 N_Pop_Storage_Error_Label;
8729
8730 subtype N_Push_Pop_xxx_Label is Node_Kind range
8731 N_Push_Constraint_Error_Label ..
8732 N_Pop_Storage_Error_Label;
8733
8734 subtype N_Raise_xxx_Error is Node_Kind range
8735 N_Raise_Constraint_Error ..
8736 N_Raise_Storage_Error;
8737
8738 subtype N_Renaming_Declaration is Node_Kind range
8739 N_Exception_Renaming_Declaration ..
8740 N_Generic_Procedure_Renaming_Declaration;
8741
8742 subtype N_Representation_Clause is Node_Kind range
8743 N_At_Clause ..
8744 N_Attribute_Definition_Clause;
8745
8746 subtype N_Short_Circuit is Node_Kind range
8747 N_And_Then ..
8748 N_Or_Else;
8749
8750 subtype N_SCIL_Node is Node_Kind range
8751 N_SCIL_Dispatch_Table_Tag_Init ..
8752 N_SCIL_Membership_Test;
8753
8754 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
8755 N_Abort_Statement ..
8756 N_If_Statement;
8757 -- Note that this includes all statement types except for the cases of the
8758 -- N_Procedure_Call_Statement which is considered to be a subexpression
8759 -- (since overloading is possible, so it needs to go through the normal
8760 -- overloading resolution for expressions).
8761
8762 subtype N_Subprogram_Call is Node_Kind range
8763 N_Function_Call ..
8764 N_Procedure_Call_Statement;
8765
8766 subtype N_Subprogram_Instantiation is Node_Kind range
8767 N_Function_Instantiation ..
8768 N_Procedure_Instantiation;
8769
8770 subtype N_Has_Condition is Node_Kind range
8771 N_Exit_Statement ..
8772 N_Terminate_Alternative;
8773 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
8774
8775 subtype N_Subexpr is Node_Kind range
8776 N_Expanded_Name ..
8777 N_Unchecked_Type_Conversion;
8778 -- Nodes with expression fields
8779
8780 subtype N_Subprogram_Specification is Node_Kind range
8781 N_Function_Specification ..
8782 N_Procedure_Specification;
8783
8784 subtype N_Unary_Op is Node_Kind range
8785 N_Op_Abs ..
8786 N_Op_Plus;
8787
8788 subtype N_Unit_Body is Node_Kind range
8789 N_Package_Body ..
8790 N_Subprogram_Body;
8791
8792 ---------------------------
8793 -- Node Access Functions --
8794 ---------------------------
8795
8796 -- The following functions return the contents of the indicated field of
8797 -- the node referenced by the argument, which is a Node_Id. They provide
8798 -- logical access to fields in the node which could be accessed using the
8799 -- Atree.Unchecked_Access package, but the idea is always to use these
8800 -- higher level routines which preserve strong typing. In debug mode,
8801 -- these routines check that they are being applied to an appropriate
8802 -- node, as well as checking that the node is in range.
8803
8804 function ABE_Is_Certain
8805 (N : Node_Id) return Boolean; -- Flag18
8806
8807 function Abort_Present
8808 (N : Node_Id) return Boolean; -- Flag15
8809
8810 function Abortable_Part
8811 (N : Node_Id) return Node_Id; -- Node2
8812
8813 function Abstract_Present
8814 (N : Node_Id) return Boolean; -- Flag4
8815
8816 function Accept_Handler_Records
8817 (N : Node_Id) return List_Id; -- List5
8818
8819 function Accept_Statement
8820 (N : Node_Id) return Node_Id; -- Node2
8821
8822 function Access_Definition
8823 (N : Node_Id) return Node_Id; -- Node3
8824
8825 function Access_To_Subprogram_Definition
8826 (N : Node_Id) return Node_Id; -- Node3
8827
8828 function Access_Types_To_Process
8829 (N : Node_Id) return Elist_Id; -- Elist2
8830
8831 function Actions
8832 (N : Node_Id) return List_Id; -- List1
8833
8834 function Activation_Chain_Entity
8835 (N : Node_Id) return Node_Id; -- Node3
8836
8837 function Acts_As_Spec
8838 (N : Node_Id) return Boolean; -- Flag4
8839
8840 function Actual_Designated_Subtype
8841 (N : Node_Id) return Node_Id; -- Node4
8842
8843 function Address_Warning_Posted
8844 (N : Node_Id) return Boolean; -- Flag18
8845
8846 function Aggregate_Bounds
8847 (N : Node_Id) return Node_Id; -- Node3
8848
8849 function Aliased_Present
8850 (N : Node_Id) return Boolean; -- Flag4
8851
8852 function All_Others
8853 (N : Node_Id) return Boolean; -- Flag11
8854
8855 function All_Present
8856 (N : Node_Id) return Boolean; -- Flag15
8857
8858 function Alternatives
8859 (N : Node_Id) return List_Id; -- List4
8860
8861 function Ancestor_Part
8862 (N : Node_Id) return Node_Id; -- Node3
8863
8864 function Atomic_Sync_Required
8865 (N : Node_Id) return Boolean; -- Flag14
8866
8867 function Array_Aggregate
8868 (N : Node_Id) return Node_Id; -- Node3
8869
8870 function Aspect_Rep_Item
8871 (N : Node_Id) return Node_Id; -- Node2
8872
8873 function Assignment_OK
8874 (N : Node_Id) return Boolean; -- Flag15
8875
8876 function Associated_Node
8877 (N : Node_Id) return Node_Id; -- Node4
8878
8879 function At_End_Proc
8880 (N : Node_Id) return Node_Id; -- Node1
8881
8882 function Attribute_Name
8883 (N : Node_Id) return Name_Id; -- Name2
8884
8885 function Aux_Decls_Node
8886 (N : Node_Id) return Node_Id; -- Node5
8887
8888 function Backwards_OK
8889 (N : Node_Id) return Boolean; -- Flag6
8890
8891 function Bad_Is_Detected
8892 (N : Node_Id) return Boolean; -- Flag15
8893
8894 function By_Ref
8895 (N : Node_Id) return Boolean; -- Flag5
8896
8897 function Body_Required
8898 (N : Node_Id) return Boolean; -- Flag13
8899
8900 function Body_To_Inline
8901 (N : Node_Id) return Node_Id; -- Node3
8902
8903 function Box_Present
8904 (N : Node_Id) return Boolean; -- Flag15
8905
8906 function Char_Literal_Value
8907 (N : Node_Id) return Uint; -- Uint2
8908
8909 function Chars
8910 (N : Node_Id) return Name_Id; -- Name1
8911
8912 function Check_Address_Alignment
8913 (N : Node_Id) return Boolean; -- Flag11
8914
8915 function Choice_Parameter
8916 (N : Node_Id) return Node_Id; -- Node2
8917
8918 function Choices
8919 (N : Node_Id) return List_Id; -- List1
8920
8921 function Class_Present
8922 (N : Node_Id) return Boolean; -- Flag6
8923
8924 function Classifications
8925 (N : Node_Id) return Node_Id; -- Node3
8926
8927 function Cleanup_Actions
8928 (N : Node_Id) return List_Id; -- List5
8929
8930 function Comes_From_Extended_Return_Statement
8931 (N : Node_Id) return Boolean; -- Flag18
8932
8933 function Compile_Time_Known_Aggregate
8934 (N : Node_Id) return Boolean; -- Flag18
8935
8936 function Component_Associations
8937 (N : Node_Id) return List_Id; -- List2
8938
8939 function Component_Clauses
8940 (N : Node_Id) return List_Id; -- List3
8941
8942 function Component_Definition
8943 (N : Node_Id) return Node_Id; -- Node4
8944
8945 function Component_Items
8946 (N : Node_Id) return List_Id; -- List3
8947
8948 function Component_List
8949 (N : Node_Id) return Node_Id; -- Node1
8950
8951 function Component_Name
8952 (N : Node_Id) return Node_Id; -- Node1
8953
8954 function Componentwise_Assignment
8955 (N : Node_Id) return Boolean; -- Flag14
8956
8957 function Condition
8958 (N : Node_Id) return Node_Id; -- Node1
8959
8960 function Condition_Actions
8961 (N : Node_Id) return List_Id; -- List3
8962
8963 function Config_Pragmas
8964 (N : Node_Id) return List_Id; -- List4
8965
8966 function Constant_Present
8967 (N : Node_Id) return Boolean; -- Flag17
8968
8969 function Constraint
8970 (N : Node_Id) return Node_Id; -- Node3
8971
8972 function Constraints
8973 (N : Node_Id) return List_Id; -- List1
8974
8975 function Context_Installed
8976 (N : Node_Id) return Boolean; -- Flag13
8977
8978 function Context_Pending
8979 (N : Node_Id) return Boolean; -- Flag16
8980
8981 function Context_Items
8982 (N : Node_Id) return List_Id; -- List1
8983
8984 function Contract_Test_Cases
8985 (N : Node_Id) return Node_Id; -- Node2
8986
8987 function Controlling_Argument
8988 (N : Node_Id) return Node_Id; -- Node1
8989
8990 function Conversion_OK
8991 (N : Node_Id) return Boolean; -- Flag14
8992
8993 function Convert_To_Return_False
8994 (N : Node_Id) return Boolean; -- Flag13
8995
8996 function Corresponding_Aspect
8997 (N : Node_Id) return Node_Id; -- Node3
8998
8999 function Corresponding_Body
9000 (N : Node_Id) return Node_Id; -- Node5
9001
9002 function Corresponding_Formal_Spec
9003 (N : Node_Id) return Node_Id; -- Node3
9004
9005 function Corresponding_Generic_Association
9006 (N : Node_Id) return Node_Id; -- Node5
9007
9008 function Corresponding_Integer_Value
9009 (N : Node_Id) return Uint; -- Uint4
9010
9011 function Corresponding_Spec
9012 (N : Node_Id) return Entity_Id; -- Node5
9013
9014 function Corresponding_Spec_Of_Stub
9015 (N : Node_Id) return Node_Id; -- Node2
9016
9017 function Corresponding_Stub
9018 (N : Node_Id) return Node_Id; -- Node3
9019
9020 function Dcheck_Function
9021 (N : Node_Id) return Entity_Id; -- Node5
9022
9023 function Declarations
9024 (N : Node_Id) return List_Id; -- List2
9025
9026 function Default_Expression
9027 (N : Node_Id) return Node_Id; -- Node5
9028
9029 function Default_Storage_Pool
9030 (N : Node_Id) return Node_Id; -- Node3
9031
9032 function Default_Name
9033 (N : Node_Id) return Node_Id; -- Node2
9034
9035 function Defining_Identifier
9036 (N : Node_Id) return Entity_Id; -- Node1
9037
9038 function Defining_Unit_Name
9039 (N : Node_Id) return Node_Id; -- Node1
9040
9041 function Delay_Alternative
9042 (N : Node_Id) return Node_Id; -- Node4
9043
9044 function Delay_Statement
9045 (N : Node_Id) return Node_Id; -- Node2
9046
9047 function Delta_Expression
9048 (N : Node_Id) return Node_Id; -- Node3
9049
9050 function Digits_Expression
9051 (N : Node_Id) return Node_Id; -- Node2
9052
9053 function Discr_Check_Funcs_Built
9054 (N : Node_Id) return Boolean; -- Flag11
9055
9056 function Discrete_Choices
9057 (N : Node_Id) return List_Id; -- List4
9058
9059 function Discrete_Range
9060 (N : Node_Id) return Node_Id; -- Node4
9061
9062 function Discrete_Subtype_Definition
9063 (N : Node_Id) return Node_Id; -- Node4
9064
9065 function Discrete_Subtype_Definitions
9066 (N : Node_Id) return List_Id; -- List2
9067
9068 function Discriminant_Specifications
9069 (N : Node_Id) return List_Id; -- List4
9070
9071 function Discriminant_Type
9072 (N : Node_Id) return Node_Id; -- Node5
9073
9074 function Do_Accessibility_Check
9075 (N : Node_Id) return Boolean; -- Flag13
9076
9077 function Do_Discriminant_Check
9078 (N : Node_Id) return Boolean; -- Flag1
9079
9080 function Do_Division_Check
9081 (N : Node_Id) return Boolean; -- Flag13
9082
9083 function Do_Length_Check
9084 (N : Node_Id) return Boolean; -- Flag4
9085
9086 function Do_Overflow_Check
9087 (N : Node_Id) return Boolean; -- Flag17
9088
9089 function Do_Range_Check
9090 (N : Node_Id) return Boolean; -- Flag9
9091
9092 function Do_Storage_Check
9093 (N : Node_Id) return Boolean; -- Flag17
9094
9095 function Do_Tag_Check
9096 (N : Node_Id) return Boolean; -- Flag13
9097
9098 function Elaborate_All_Desirable
9099 (N : Node_Id) return Boolean; -- Flag9
9100
9101 function Elaborate_All_Present
9102 (N : Node_Id) return Boolean; -- Flag14
9103
9104 function Elaborate_Desirable
9105 (N : Node_Id) return Boolean; -- Flag11
9106
9107 function Elaborate_Present
9108 (N : Node_Id) return Boolean; -- Flag4
9109
9110 function Else_Actions
9111 (N : Node_Id) return List_Id; -- List3
9112
9113 function Else_Statements
9114 (N : Node_Id) return List_Id; -- List4
9115
9116 function Elsif_Parts
9117 (N : Node_Id) return List_Id; -- List3
9118
9119 function Enclosing_Variant
9120 (N : Node_Id) return Node_Id; -- Node2
9121
9122 function End_Label
9123 (N : Node_Id) return Node_Id; -- Node4
9124
9125 function End_Span
9126 (N : Node_Id) return Uint; -- Uint5
9127
9128 function Entity
9129 (N : Node_Id) return Node_Id; -- Node4
9130
9131 function Entity_Or_Associated_Node
9132 (N : Node_Id) return Node_Id; -- Node4
9133
9134 function Entry_Body_Formal_Part
9135 (N : Node_Id) return Node_Id; -- Node5
9136
9137 function Entry_Call_Alternative
9138 (N : Node_Id) return Node_Id; -- Node1
9139
9140 function Entry_Call_Statement
9141 (N : Node_Id) return Node_Id; -- Node1
9142
9143 function Entry_Direct_Name
9144 (N : Node_Id) return Node_Id; -- Node1
9145
9146 function Entry_Index
9147 (N : Node_Id) return Node_Id; -- Node5
9148
9149 function Entry_Index_Specification
9150 (N : Node_Id) return Node_Id; -- Node4
9151
9152 function Etype
9153 (N : Node_Id) return Node_Id; -- Node5
9154
9155 function Exception_Choices
9156 (N : Node_Id) return List_Id; -- List4
9157
9158 function Exception_Handlers
9159 (N : Node_Id) return List_Id; -- List5
9160
9161 function Exception_Junk
9162 (N : Node_Id) return Boolean; -- Flag8
9163
9164 function Exception_Label
9165 (N : Node_Id) return Node_Id; -- Node5
9166
9167 function Explicit_Actual_Parameter
9168 (N : Node_Id) return Node_Id; -- Node3
9169
9170 function Expansion_Delayed
9171 (N : Node_Id) return Boolean; -- Flag11
9172
9173 function Explicit_Generic_Actual_Parameter
9174 (N : Node_Id) return Node_Id; -- Node1
9175
9176 function Expression
9177 (N : Node_Id) return Node_Id; -- Node3
9178
9179 function Expressions
9180 (N : Node_Id) return List_Id; -- List1
9181
9182 function First_Bit
9183 (N : Node_Id) return Node_Id; -- Node3
9184
9185 function First_Inlined_Subprogram
9186 (N : Node_Id) return Entity_Id; -- Node3
9187
9188 function First_Name
9189 (N : Node_Id) return Boolean; -- Flag5
9190
9191 function First_Named_Actual
9192 (N : Node_Id) return Node_Id; -- Node4
9193
9194 function First_Real_Statement
9195 (N : Node_Id) return Node_Id; -- Node2
9196
9197 function First_Subtype_Link
9198 (N : Node_Id) return Entity_Id; -- Node5
9199
9200 function Float_Truncate
9201 (N : Node_Id) return Boolean; -- Flag11
9202
9203 function Formal_Type_Definition
9204 (N : Node_Id) return Node_Id; -- Node3
9205
9206 function Forwards_OK
9207 (N : Node_Id) return Boolean; -- Flag5
9208
9209 function From_Aspect_Specification
9210 (N : Node_Id) return Boolean; -- Flag13
9211
9212 function From_At_End
9213 (N : Node_Id) return Boolean; -- Flag4
9214
9215 function From_At_Mod
9216 (N : Node_Id) return Boolean; -- Flag4
9217
9218 function From_Conditional_Expression
9219 (N : Node_Id) return Boolean; -- Flag1
9220
9221 function From_Default
9222 (N : Node_Id) return Boolean; -- Flag6
9223
9224 function Generalized_Indexing
9225 (N : Node_Id) return Node_Id; -- Node4
9226 function Generic_Associations
9227 (N : Node_Id) return List_Id; -- List3
9228
9229 function Generic_Formal_Declarations
9230 (N : Node_Id) return List_Id; -- List2
9231
9232 function Generic_Parent
9233 (N : Node_Id) return Node_Id; -- Node5
9234
9235 function Generic_Parent_Type
9236 (N : Node_Id) return Node_Id; -- Node4
9237
9238 function Handled_Statement_Sequence
9239 (N : Node_Id) return Node_Id; -- Node4
9240
9241 function Handler_List_Entry
9242 (N : Node_Id) return Node_Id; -- Node2
9243
9244 function Has_Created_Identifier
9245 (N : Node_Id) return Boolean; -- Flag15
9246
9247 function Has_Dereference_Action
9248 (N : Node_Id) return Boolean; -- Flag13
9249
9250 function Has_Dynamic_Length_Check
9251 (N : Node_Id) return Boolean; -- Flag10
9252
9253 function Has_Dynamic_Range_Check
9254 (N : Node_Id) return Boolean; -- Flag12
9255
9256 function Has_Init_Expression
9257 (N : Node_Id) return Boolean; -- Flag14
9258
9259 function Has_Local_Raise
9260 (N : Node_Id) return Boolean; -- Flag8
9261
9262 function Has_No_Elaboration_Code
9263 (N : Node_Id) return Boolean; -- Flag17
9264
9265 function Has_Pragma_Suppress_All
9266 (N : Node_Id) return Boolean; -- Flag14
9267
9268 function Has_Private_View
9269 (N : Node_Id) return Boolean; -- Flag11
9270
9271 function Has_Relative_Deadline_Pragma
9272 (N : Node_Id) return Boolean; -- Flag9
9273
9274 function Has_Self_Reference
9275 (N : Node_Id) return Boolean; -- Flag13
9276
9277 function Has_SP_Choice
9278 (N : Node_Id) return Boolean; -- Flag15
9279
9280 function Has_Storage_Size_Pragma
9281 (N : Node_Id) return Boolean; -- Flag5
9282
9283 function Has_Wide_Character
9284 (N : Node_Id) return Boolean; -- Flag11
9285
9286 function Has_Wide_Wide_Character
9287 (N : Node_Id) return Boolean; -- Flag13
9288
9289 function Header_Size_Added
9290 (N : Node_Id) return Boolean; -- Flag11
9291
9292 function Hidden_By_Use_Clause
9293 (N : Node_Id) return Elist_Id; -- Elist4
9294
9295 function High_Bound
9296 (N : Node_Id) return Node_Id; -- Node2
9297
9298 function Identifier
9299 (N : Node_Id) return Node_Id; -- Node1
9300
9301 function Interface_List
9302 (N : Node_Id) return List_Id; -- List2
9303
9304 function Interface_Present
9305 (N : Node_Id) return Boolean; -- Flag16
9306
9307 function Implicit_With
9308 (N : Node_Id) return Boolean; -- Flag16
9309
9310 function Implicit_With_From_Instantiation
9311 (N : Node_Id) return Boolean; -- Flag12
9312
9313 function Import_Interface_Present
9314 (N : Node_Id) return Boolean; -- Flag16
9315
9316 function In_Present
9317 (N : Node_Id) return Boolean; -- Flag15
9318
9319 function Includes_Infinities
9320 (N : Node_Id) return Boolean; -- Flag11
9321
9322 function Incomplete_View
9323 (N : Node_Id) return Node_Id; -- Node2
9324
9325 function Inherited_Discriminant
9326 (N : Node_Id) return Boolean; -- Flag13
9327
9328 function Instance_Spec
9329 (N : Node_Id) return Node_Id; -- Node5
9330
9331 function Intval
9332 (N : Node_Id) return Uint; -- Uint3
9333
9334 function Is_Accessibility_Actual
9335 (N : Node_Id) return Boolean; -- Flag13
9336
9337 function Is_Analyzed_Pragma
9338 (N : Node_Id) return Boolean; -- Flag5
9339
9340 function Is_Asynchronous_Call_Block
9341 (N : Node_Id) return Boolean; -- Flag7
9342
9343 function Is_Boolean_Aspect
9344 (N : Node_Id) return Boolean; -- Flag16
9345
9346 function Is_Checked
9347 (N : Node_Id) return Boolean; -- Flag11
9348
9349 function Is_Component_Left_Opnd
9350 (N : Node_Id) return Boolean; -- Flag13
9351
9352 function Is_Component_Right_Opnd
9353 (N : Node_Id) return Boolean; -- Flag14
9354
9355 function Is_Controlling_Actual
9356 (N : Node_Id) return Boolean; -- Flag16
9357
9358 function Is_Delayed_Aspect
9359 (N : Node_Id) return Boolean; -- Flag14
9360
9361 function Is_Disabled
9362 (N : Node_Id) return Boolean; -- Flag15
9363
9364 function Is_Dynamic_Coextension
9365 (N : Node_Id) return Boolean; -- Flag18
9366
9367 function Is_Elsif
9368 (N : Node_Id) return Boolean; -- Flag13
9369
9370 function Is_Entry_Barrier_Function
9371 (N : Node_Id) return Boolean; -- Flag8
9372
9373 function Is_Expanded_Build_In_Place_Call
9374 (N : Node_Id) return Boolean; -- Flag11
9375
9376 function Is_Expanded_Contract
9377 (N : Node_Id) return Boolean; -- Flag1
9378
9379 function Is_Finalization_Wrapper
9380 (N : Node_Id) return Boolean; -- Flag9
9381
9382 function Is_Folded_In_Parser
9383 (N : Node_Id) return Boolean; -- Flag4
9384
9385 function Is_Generic_Contract_Pragma
9386 (N : Node_Id) return Boolean; -- Flag2
9387
9388 function Is_Ghost_Pragma
9389 (N : Node_Id) return Boolean; -- Flag3
9390
9391 function Is_Ignored
9392 (N : Node_Id) return Boolean; -- Flag9
9393
9394 function Is_In_Discriminant_Check
9395 (N : Node_Id) return Boolean; -- Flag11
9396
9397 function Is_Inherited_Pragma
9398 (N : Node_Id) return Boolean; -- Flag4
9399
9400 function Is_Machine_Number
9401 (N : Node_Id) return Boolean; -- Flag11
9402
9403 function Is_Null_Loop
9404 (N : Node_Id) return Boolean; -- Flag16
9405
9406 function Is_Overloaded
9407 (N : Node_Id) return Boolean; -- Flag5
9408
9409 function Is_Power_Of_2_For_Shift
9410 (N : Node_Id) return Boolean; -- Flag13
9411
9412 function Is_Prefixed_Call
9413 (N : Node_Id) return Boolean; -- Flag17
9414
9415 function Is_Protected_Subprogram_Body
9416 (N : Node_Id) return Boolean; -- Flag7
9417
9418 function Is_Qualified_Universal_Literal
9419 (N : Node_Id) return Boolean; -- Flag4
9420
9421 function Is_Static_Coextension
9422 (N : Node_Id) return Boolean; -- Flag14
9423
9424 function Is_Static_Expression
9425 (N : Node_Id) return Boolean; -- Flag6
9426
9427 function Is_Subprogram_Descriptor
9428 (N : Node_Id) return Boolean; -- Flag16
9429
9430 function Is_Task_Allocation_Block
9431 (N : Node_Id) return Boolean; -- Flag6
9432
9433 function Is_Task_Body_Procedure
9434 (N : Node_Id) return Boolean; -- Flag1
9435
9436 function Is_Task_Master
9437 (N : Node_Id) return Boolean; -- Flag5
9438
9439 function Iteration_Scheme
9440 (N : Node_Id) return Node_Id; -- Node2
9441
9442 function Iterator_Specification
9443 (N : Node_Id) return Node_Id; -- Node2
9444
9445 function Itype
9446 (N : Node_Id) return Entity_Id; -- Node1
9447
9448 function Kill_Range_Check
9449 (N : Node_Id) return Boolean; -- Flag11
9450
9451 function Label_Construct
9452 (N : Node_Id) return Node_Id; -- Node2
9453
9454 function Left_Opnd
9455 (N : Node_Id) return Node_Id; -- Node2
9456
9457 function Last_Bit
9458 (N : Node_Id) return Node_Id; -- Node4
9459
9460 function Last_Name
9461 (N : Node_Id) return Boolean; -- Flag6
9462
9463 function Library_Unit
9464 (N : Node_Id) return Node_Id; -- Node4
9465
9466 function Limited_View_Installed
9467 (N : Node_Id) return Boolean; -- Flag18
9468
9469 function Limited_Present
9470 (N : Node_Id) return Boolean; -- Flag17
9471
9472 function Literals
9473 (N : Node_Id) return List_Id; -- List1
9474
9475 function Local_Raise_Not_OK
9476 (N : Node_Id) return Boolean; -- Flag7
9477
9478 function Local_Raise_Statements
9479 (N : Node_Id) return Elist_Id; -- Elist1
9480
9481 function Loop_Actions
9482 (N : Node_Id) return List_Id; -- List2
9483
9484 function Loop_Parameter_Specification
9485 (N : Node_Id) return Node_Id; -- Node4
9486
9487 function Low_Bound
9488 (N : Node_Id) return Node_Id; -- Node1
9489
9490 function Mod_Clause
9491 (N : Node_Id) return Node_Id; -- Node2
9492
9493 function More_Ids
9494 (N : Node_Id) return Boolean; -- Flag5
9495
9496 function Must_Be_Byte_Aligned
9497 (N : Node_Id) return Boolean; -- Flag14
9498
9499 function Must_Not_Freeze
9500 (N : Node_Id) return Boolean; -- Flag8
9501
9502 function Must_Not_Override
9503 (N : Node_Id) return Boolean; -- Flag15
9504
9505 function Must_Override
9506 (N : Node_Id) return Boolean; -- Flag14
9507
9508 function Name
9509 (N : Node_Id) return Node_Id; -- Node2
9510
9511 function Names
9512 (N : Node_Id) return List_Id; -- List2
9513
9514 function Next_Entity
9515 (N : Node_Id) return Node_Id; -- Node2
9516
9517 function Next_Exit_Statement
9518 (N : Node_Id) return Node_Id; -- Node3
9519
9520 function Next_Implicit_With
9521 (N : Node_Id) return Node_Id; -- Node3
9522
9523 function Next_Named_Actual
9524 (N : Node_Id) return Node_Id; -- Node4
9525
9526 function Next_Pragma
9527 (N : Node_Id) return Node_Id; -- Node1
9528
9529 function Next_Rep_Item
9530 (N : Node_Id) return Node_Id; -- Node5
9531
9532 function Next_Use_Clause
9533 (N : Node_Id) return Node_Id; -- Node3
9534
9535 function No_Ctrl_Actions
9536 (N : Node_Id) return Boolean; -- Flag7
9537
9538 function No_Elaboration_Check
9539 (N : Node_Id) return Boolean; -- Flag14
9540
9541 function No_Entities_Ref_In_Spec
9542 (N : Node_Id) return Boolean; -- Flag8
9543
9544 function No_Initialization
9545 (N : Node_Id) return Boolean; -- Flag13
9546
9547 function No_Minimize_Eliminate
9548 (N : Node_Id) return Boolean; -- Flag17
9549
9550 function No_Side_Effect_Removal
9551 (N : Node_Id) return Boolean; -- Flag1
9552
9553 function No_Truncation
9554 (N : Node_Id) return Boolean; -- Flag17
9555
9556 function Non_Aliased_Prefix
9557 (N : Node_Id) return Boolean; -- Flag18
9558
9559 function Null_Present
9560 (N : Node_Id) return Boolean; -- Flag13
9561
9562 function Null_Excluding_Subtype
9563 (N : Node_Id) return Boolean; -- Flag16
9564
9565 function Null_Exclusion_Present
9566 (N : Node_Id) return Boolean; -- Flag11
9567
9568 function Null_Exclusion_In_Return_Present
9569 (N : Node_Id) return Boolean; -- Flag14
9570
9571 function Null_Record_Present
9572 (N : Node_Id) return Boolean; -- Flag17
9573
9574 function Object_Definition
9575 (N : Node_Id) return Node_Id; -- Node4
9576
9577 function Of_Present
9578 (N : Node_Id) return Boolean; -- Flag16
9579
9580 function Original_Discriminant
9581 (N : Node_Id) return Node_Id; -- Node2
9582
9583 function Original_Entity
9584 (N : Node_Id) return Entity_Id; -- Node2
9585
9586 function Others_Discrete_Choices
9587 (N : Node_Id) return List_Id; -- List1
9588
9589 function Out_Present
9590 (N : Node_Id) return Boolean; -- Flag17
9591
9592 function Parameter_Associations
9593 (N : Node_Id) return List_Id; -- List3
9594
9595 function Parameter_Specifications
9596 (N : Node_Id) return List_Id; -- List3
9597
9598 function Parameter_Type
9599 (N : Node_Id) return Node_Id; -- Node2
9600
9601 function Parent_Spec
9602 (N : Node_Id) return Node_Id; -- Node4
9603
9604 function Position
9605 (N : Node_Id) return Node_Id; -- Node2
9606
9607 function Pragma_Argument_Associations
9608 (N : Node_Id) return List_Id; -- List2
9609
9610 function Pragma_Identifier
9611 (N : Node_Id) return Node_Id; -- Node4
9612
9613 function Pragmas_After
9614 (N : Node_Id) return List_Id; -- List5
9615
9616 function Pragmas_Before
9617 (N : Node_Id) return List_Id; -- List4
9618
9619 function Pre_Post_Conditions
9620 (N : Node_Id) return Node_Id; -- Node1
9621
9622 function Prefix
9623 (N : Node_Id) return Node_Id; -- Node3
9624
9625 function Premature_Use
9626 (N : Node_Id) return Node_Id; -- Node5
9627
9628 function Present_Expr
9629 (N : Node_Id) return Uint; -- Uint3
9630
9631 function Prev_Ids
9632 (N : Node_Id) return Boolean; -- Flag6
9633
9634 function Print_In_Hex
9635 (N : Node_Id) return Boolean; -- Flag13
9636
9637 function Private_Declarations
9638 (N : Node_Id) return List_Id; -- List3
9639
9640 function Private_Present
9641 (N : Node_Id) return Boolean; -- Flag15
9642
9643 function Procedure_To_Call
9644 (N : Node_Id) return Node_Id; -- Node2
9645
9646 function Proper_Body
9647 (N : Node_Id) return Node_Id; -- Node1
9648
9649 function Protected_Definition
9650 (N : Node_Id) return Node_Id; -- Node3
9651
9652 function Protected_Present
9653 (N : Node_Id) return Boolean; -- Flag6
9654
9655 function Raises_Constraint_Error
9656 (N : Node_Id) return Boolean; -- Flag7
9657
9658 function Range_Constraint
9659 (N : Node_Id) return Node_Id; -- Node4
9660
9661 function Range_Expression
9662 (N : Node_Id) return Node_Id; -- Node4
9663
9664 function Real_Range_Specification
9665 (N : Node_Id) return Node_Id; -- Node4
9666
9667 function Realval
9668 (N : Node_Id) return Ureal; -- Ureal3
9669
9670 function Reason
9671 (N : Node_Id) return Uint; -- Uint3
9672
9673 function Record_Extension_Part
9674 (N : Node_Id) return Node_Id; -- Node3
9675
9676 function Redundant_Use
9677 (N : Node_Id) return Boolean; -- Flag13
9678
9679 function Renaming_Exception
9680 (N : Node_Id) return Node_Id; -- Node2
9681
9682 function Result_Definition
9683 (N : Node_Id) return Node_Id; -- Node4
9684
9685 function Return_Object_Declarations
9686 (N : Node_Id) return List_Id; -- List3
9687
9688 function Return_Statement_Entity
9689 (N : Node_Id) return Node_Id; -- Node5
9690
9691 function Reverse_Present
9692 (N : Node_Id) return Boolean; -- Flag15
9693
9694 function Right_Opnd
9695 (N : Node_Id) return Node_Id; -- Node3
9696
9697 function Rounded_Result
9698 (N : Node_Id) return Boolean; -- Flag18
9699
9700 function SCIL_Controlling_Tag
9701 (N : Node_Id) return Node_Id; -- Node5
9702
9703 function SCIL_Entity
9704 (N : Node_Id) return Node_Id; -- Node4
9705
9706 function SCIL_Tag_Value
9707 (N : Node_Id) return Node_Id; -- Node5
9708
9709 function SCIL_Target_Prim
9710 (N : Node_Id) return Node_Id; -- Node2
9711
9712 function Scope
9713 (N : Node_Id) return Node_Id; -- Node3
9714
9715 function Select_Alternatives
9716 (N : Node_Id) return List_Id; -- List1
9717
9718 function Selector_Name
9719 (N : Node_Id) return Node_Id; -- Node2
9720
9721 function Selector_Names
9722 (N : Node_Id) return List_Id; -- List1
9723
9724 function Shift_Count_OK
9725 (N : Node_Id) return Boolean; -- Flag4
9726
9727 function Source_Type
9728 (N : Node_Id) return Entity_Id; -- Node1
9729
9730 function Specification
9731 (N : Node_Id) return Node_Id; -- Node1
9732
9733 function Split_PPC
9734 (N : Node_Id) return Boolean; -- Flag17
9735
9736 function Statements
9737 (N : Node_Id) return List_Id; -- List3
9738
9739 function Storage_Pool
9740 (N : Node_Id) return Node_Id; -- Node1
9741
9742 function Subpool_Handle_Name
9743 (N : Node_Id) return Node_Id; -- Node4
9744
9745 function Strval
9746 (N : Node_Id) return String_Id; -- Str3
9747
9748 function Subtype_Indication
9749 (N : Node_Id) return Node_Id; -- Node5
9750
9751 function Subtype_Mark
9752 (N : Node_Id) return Node_Id; -- Node4
9753
9754 function Subtype_Marks
9755 (N : Node_Id) return List_Id; -- List2
9756
9757 function Suppress_Assignment_Checks
9758 (N : Node_Id) return Boolean; -- Flag18
9759
9760 function Suppress_Loop_Warnings
9761 (N : Node_Id) return Boolean; -- Flag17
9762
9763 function Synchronized_Present
9764 (N : Node_Id) return Boolean; -- Flag7
9765
9766 function Tagged_Present
9767 (N : Node_Id) return Boolean; -- Flag15
9768
9769 function Target_Type
9770 (N : Node_Id) return Entity_Id; -- Node2
9771
9772 function Task_Definition
9773 (N : Node_Id) return Node_Id; -- Node3
9774
9775 function Task_Present
9776 (N : Node_Id) return Boolean; -- Flag5
9777
9778 function Then_Actions
9779 (N : Node_Id) return List_Id; -- List2
9780
9781 function Then_Statements
9782 (N : Node_Id) return List_Id; -- List2
9783
9784 function Treat_Fixed_As_Integer
9785 (N : Node_Id) return Boolean; -- Flag14
9786
9787 function Triggering_Alternative
9788 (N : Node_Id) return Node_Id; -- Node1
9789
9790 function Triggering_Statement
9791 (N : Node_Id) return Node_Id; -- Node1
9792
9793 function TSS_Elist
9794 (N : Node_Id) return Elist_Id; -- Elist3
9795
9796 function Type_Definition
9797 (N : Node_Id) return Node_Id; -- Node3
9798
9799 function Uneval_Old_Accept
9800 (N : Node_Id) return Boolean; -- Flag7
9801
9802 function Uneval_Old_Warn
9803 (N : Node_Id) return Boolean; -- Flag18
9804
9805 function Unit
9806 (N : Node_Id) return Node_Id; -- Node2
9807
9808 function Unknown_Discriminants_Present
9809 (N : Node_Id) return Boolean; -- Flag13
9810
9811 function Unreferenced_In_Spec
9812 (N : Node_Id) return Boolean; -- Flag7
9813
9814 function Variant_Part
9815 (N : Node_Id) return Node_Id; -- Node4
9816
9817 function Variants
9818 (N : Node_Id) return List_Id; -- List1
9819
9820 function Visible_Declarations
9821 (N : Node_Id) return List_Id; -- List2
9822
9823 function Uninitialized_Variable
9824 (N : Node_Id) return Node_Id; -- Node3
9825
9826 function Used_Operations
9827 (N : Node_Id) return Elist_Id; -- Elist5
9828
9829 function Was_Expression_Function
9830 (N : Node_Id) return Boolean; -- Flag18
9831
9832 function Was_Originally_Stub
9833 (N : Node_Id) return Boolean; -- Flag13
9834
9835 function Withed_Body
9836 (N : Node_Id) return Node_Id; -- Node1
9837
9838 -- End functions (note used by xsinfo utility program to end processing)
9839
9840 ----------------------------
9841 -- Node Update Procedures --
9842 ----------------------------
9843
9844 -- These are the corresponding node update routines, which again provide
9845 -- a high level logical access with type checking. In addition to setting
9846 -- the indicated field of the node N to the given Val, in the case of
9847 -- tree pointers (List1-4), the parent pointer of the Val node is set to
9848 -- point back to node N. This automates the setting of the parent pointer.
9849
9850 procedure Set_ABE_Is_Certain
9851 (N : Node_Id; Val : Boolean := True); -- Flag18
9852
9853 procedure Set_Abort_Present
9854 (N : Node_Id; Val : Boolean := True); -- Flag15
9855
9856 procedure Set_Abortable_Part
9857 (N : Node_Id; Val : Node_Id); -- Node2
9858
9859 procedure Set_Abstract_Present
9860 (N : Node_Id; Val : Boolean := True); -- Flag4
9861
9862 procedure Set_Accept_Handler_Records
9863 (N : Node_Id; Val : List_Id); -- List5
9864
9865 procedure Set_Accept_Statement
9866 (N : Node_Id; Val : Node_Id); -- Node2
9867
9868 procedure Set_Access_Definition
9869 (N : Node_Id; Val : Node_Id); -- Node3
9870
9871 procedure Set_Access_To_Subprogram_Definition
9872 (N : Node_Id; Val : Node_Id); -- Node3
9873
9874 procedure Set_Access_Types_To_Process
9875 (N : Node_Id; Val : Elist_Id); -- Elist2
9876
9877 procedure Set_Actions
9878 (N : Node_Id; Val : List_Id); -- List1
9879
9880 procedure Set_Activation_Chain_Entity
9881 (N : Node_Id; Val : Node_Id); -- Node3
9882
9883 procedure Set_Acts_As_Spec
9884 (N : Node_Id; Val : Boolean := True); -- Flag4
9885
9886 procedure Set_Actual_Designated_Subtype
9887 (N : Node_Id; Val : Node_Id); -- Node4
9888
9889 procedure Set_Address_Warning_Posted
9890 (N : Node_Id; Val : Boolean := True); -- Flag18
9891
9892 procedure Set_Aggregate_Bounds
9893 (N : Node_Id; Val : Node_Id); -- Node3
9894
9895 procedure Set_Aliased_Present
9896 (N : Node_Id; Val : Boolean := True); -- Flag4
9897
9898 procedure Set_All_Others
9899 (N : Node_Id; Val : Boolean := True); -- Flag11
9900
9901 procedure Set_All_Present
9902 (N : Node_Id; Val : Boolean := True); -- Flag15
9903
9904 procedure Set_Alternatives
9905 (N : Node_Id; Val : List_Id); -- List4
9906
9907 procedure Set_Ancestor_Part
9908 (N : Node_Id; Val : Node_Id); -- Node3
9909
9910 procedure Set_Atomic_Sync_Required
9911 (N : Node_Id; Val : Boolean := True); -- Flag14
9912
9913 procedure Set_Array_Aggregate
9914 (N : Node_Id; Val : Node_Id); -- Node3
9915
9916 procedure Set_Aspect_Rep_Item
9917 (N : Node_Id; Val : Node_Id); -- Node2
9918
9919 procedure Set_Assignment_OK
9920 (N : Node_Id; Val : Boolean := True); -- Flag15
9921
9922 procedure Set_Associated_Node
9923 (N : Node_Id; Val : Node_Id); -- Node4
9924
9925 procedure Set_Attribute_Name
9926 (N : Node_Id; Val : Name_Id); -- Name2
9927
9928 procedure Set_At_End_Proc
9929 (N : Node_Id; Val : Node_Id); -- Node1
9930
9931 procedure Set_Aux_Decls_Node
9932 (N : Node_Id; Val : Node_Id); -- Node5
9933
9934 procedure Set_Backwards_OK
9935 (N : Node_Id; Val : Boolean := True); -- Flag6
9936
9937 procedure Set_Bad_Is_Detected
9938 (N : Node_Id; Val : Boolean := True); -- Flag15
9939
9940 procedure Set_Body_Required
9941 (N : Node_Id; Val : Boolean := True); -- Flag13
9942
9943 procedure Set_Body_To_Inline
9944 (N : Node_Id; Val : Node_Id); -- Node3
9945
9946 procedure Set_Box_Present
9947 (N : Node_Id; Val : Boolean := True); -- Flag15
9948
9949 procedure Set_By_Ref
9950 (N : Node_Id; Val : Boolean := True); -- Flag5
9951
9952 procedure Set_Char_Literal_Value
9953 (N : Node_Id; Val : Uint); -- Uint2
9954
9955 procedure Set_Chars
9956 (N : Node_Id; Val : Name_Id); -- Name1
9957
9958 procedure Set_Check_Address_Alignment
9959 (N : Node_Id; Val : Boolean := True); -- Flag11
9960
9961 procedure Set_Choice_Parameter
9962 (N : Node_Id; Val : Node_Id); -- Node2
9963
9964 procedure Set_Choices
9965 (N : Node_Id; Val : List_Id); -- List1
9966
9967 procedure Set_Class_Present
9968 (N : Node_Id; Val : Boolean := True); -- Flag6
9969
9970 procedure Set_Classifications
9971 (N : Node_Id; Val : Node_Id); -- Node3
9972
9973 procedure Set_Cleanup_Actions
9974 (N : Node_Id; Val : List_Id); -- List5
9975
9976 procedure Set_Comes_From_Extended_Return_Statement
9977 (N : Node_Id; Val : Boolean := True); -- Flag18
9978
9979 procedure Set_Compile_Time_Known_Aggregate
9980 (N : Node_Id; Val : Boolean := True); -- Flag18
9981
9982 procedure Set_Component_Associations
9983 (N : Node_Id; Val : List_Id); -- List2
9984
9985 procedure Set_Component_Clauses
9986 (N : Node_Id; Val : List_Id); -- List3
9987
9988 procedure Set_Component_Definition
9989 (N : Node_Id; Val : Node_Id); -- Node4
9990
9991 procedure Set_Component_Items
9992 (N : Node_Id; Val : List_Id); -- List3
9993
9994 procedure Set_Component_List
9995 (N : Node_Id; Val : Node_Id); -- Node1
9996
9997 procedure Set_Component_Name
9998 (N : Node_Id; Val : Node_Id); -- Node1
9999
10000 procedure Set_Componentwise_Assignment
10001 (N : Node_Id; Val : Boolean := True); -- Flag14
10002
10003 procedure Set_Condition
10004 (N : Node_Id; Val : Node_Id); -- Node1
10005
10006 procedure Set_Condition_Actions
10007 (N : Node_Id; Val : List_Id); -- List3
10008
10009 procedure Set_Config_Pragmas
10010 (N : Node_Id; Val : List_Id); -- List4
10011
10012 procedure Set_Constant_Present
10013 (N : Node_Id; Val : Boolean := True); -- Flag17
10014
10015 procedure Set_Constraint
10016 (N : Node_Id; Val : Node_Id); -- Node3
10017
10018 procedure Set_Constraints
10019 (N : Node_Id; Val : List_Id); -- List1
10020
10021 procedure Set_Context_Installed
10022 (N : Node_Id; Val : Boolean := True); -- Flag13
10023
10024 procedure Set_Context_Items
10025 (N : Node_Id; Val : List_Id); -- List1
10026
10027 procedure Set_Context_Pending
10028 (N : Node_Id; Val : Boolean := True); -- Flag16
10029
10030 procedure Set_Contract_Test_Cases
10031 (N : Node_Id; Val : Node_Id); -- Node2
10032
10033 procedure Set_Controlling_Argument
10034 (N : Node_Id; Val : Node_Id); -- Node1
10035
10036 procedure Set_Conversion_OK
10037 (N : Node_Id; Val : Boolean := True); -- Flag14
10038
10039 procedure Set_Convert_To_Return_False
10040 (N : Node_Id; Val : Boolean := True); -- Flag13
10041
10042 procedure Set_Corresponding_Aspect
10043 (N : Node_Id; Val : Node_Id); -- Node3
10044
10045 procedure Set_Corresponding_Body
10046 (N : Node_Id; Val : Node_Id); -- Node5
10047
10048 procedure Set_Corresponding_Formal_Spec
10049 (N : Node_Id; Val : Node_Id); -- Node3
10050
10051 procedure Set_Corresponding_Generic_Association
10052 (N : Node_Id; Val : Node_Id); -- Node5
10053
10054 procedure Set_Corresponding_Integer_Value
10055 (N : Node_Id; Val : Uint); -- Uint4
10056
10057 procedure Set_Corresponding_Spec
10058 (N : Node_Id; Val : Entity_Id); -- Node5
10059
10060 procedure Set_Corresponding_Spec_Of_Stub
10061 (N : Node_Id; Val : Node_Id); -- Node2
10062
10063 procedure Set_Corresponding_Stub
10064 (N : Node_Id; Val : Node_Id); -- Node3
10065
10066 procedure Set_Dcheck_Function
10067 (N : Node_Id; Val : Entity_Id); -- Node5
10068
10069 procedure Set_Declarations
10070 (N : Node_Id; Val : List_Id); -- List2
10071
10072 procedure Set_Default_Expression
10073 (N : Node_Id; Val : Node_Id); -- Node5
10074
10075 procedure Set_Default_Storage_Pool
10076 (N : Node_Id; Val : Node_Id); -- Node3
10077
10078 procedure Set_Default_Name
10079 (N : Node_Id; Val : Node_Id); -- Node2
10080
10081 procedure Set_Defining_Identifier
10082 (N : Node_Id; Val : Entity_Id); -- Node1
10083
10084 procedure Set_Defining_Unit_Name
10085 (N : Node_Id; Val : Node_Id); -- Node1
10086
10087 procedure Set_Delay_Alternative
10088 (N : Node_Id; Val : Node_Id); -- Node4
10089
10090 procedure Set_Delay_Statement
10091 (N : Node_Id; Val : Node_Id); -- Node2
10092
10093 procedure Set_Delta_Expression
10094 (N : Node_Id; Val : Node_Id); -- Node3
10095
10096 procedure Set_Digits_Expression
10097 (N : Node_Id; Val : Node_Id); -- Node2
10098
10099 procedure Set_Discr_Check_Funcs_Built
10100 (N : Node_Id; Val : Boolean := True); -- Flag11
10101
10102 procedure Set_Discrete_Choices
10103 (N : Node_Id; Val : List_Id); -- List4
10104
10105 procedure Set_Discrete_Range
10106 (N : Node_Id; Val : Node_Id); -- Node4
10107
10108 procedure Set_Discrete_Subtype_Definition
10109 (N : Node_Id; Val : Node_Id); -- Node4
10110
10111 procedure Set_Discrete_Subtype_Definitions
10112 (N : Node_Id; Val : List_Id); -- List2
10113
10114 procedure Set_Discriminant_Specifications
10115 (N : Node_Id; Val : List_Id); -- List4
10116
10117 procedure Set_Discriminant_Type
10118 (N : Node_Id; Val : Node_Id); -- Node5
10119
10120 procedure Set_Do_Accessibility_Check
10121 (N : Node_Id; Val : Boolean := True); -- Flag13
10122
10123 procedure Set_Do_Discriminant_Check
10124 (N : Node_Id; Val : Boolean := True); -- Flag1
10125
10126 procedure Set_Do_Division_Check
10127 (N : Node_Id; Val : Boolean := True); -- Flag13
10128
10129 procedure Set_Do_Length_Check
10130 (N : Node_Id; Val : Boolean := True); -- Flag4
10131
10132 procedure Set_Do_Overflow_Check
10133 (N : Node_Id; Val : Boolean := True); -- Flag17
10134
10135 procedure Set_Do_Range_Check
10136 (N : Node_Id; Val : Boolean := True); -- Flag9
10137
10138 procedure Set_Do_Storage_Check
10139 (N : Node_Id; Val : Boolean := True); -- Flag17
10140
10141 procedure Set_Do_Tag_Check
10142 (N : Node_Id; Val : Boolean := True); -- Flag13
10143
10144 procedure Set_Elaborate_All_Desirable
10145 (N : Node_Id; Val : Boolean := True); -- Flag9
10146
10147 procedure Set_Elaborate_All_Present
10148 (N : Node_Id; Val : Boolean := True); -- Flag14
10149
10150 procedure Set_Elaborate_Desirable
10151 (N : Node_Id; Val : Boolean := True); -- Flag11
10152
10153 procedure Set_Elaborate_Present
10154 (N : Node_Id; Val : Boolean := True); -- Flag4
10155
10156 procedure Set_Else_Actions
10157 (N : Node_Id; Val : List_Id); -- List3
10158
10159 procedure Set_Else_Statements
10160 (N : Node_Id; Val : List_Id); -- List4
10161
10162 procedure Set_Elsif_Parts
10163 (N : Node_Id; Val : List_Id); -- List3
10164
10165 procedure Set_Enclosing_Variant
10166 (N : Node_Id; Val : Node_Id); -- Node2
10167
10168 procedure Set_End_Label
10169 (N : Node_Id; Val : Node_Id); -- Node4
10170
10171 procedure Set_End_Span
10172 (N : Node_Id; Val : Uint); -- Uint5
10173
10174 procedure Set_Entity
10175 (N : Node_Id; Val : Node_Id); -- Node4
10176
10177 procedure Set_Entry_Body_Formal_Part
10178 (N : Node_Id; Val : Node_Id); -- Node5
10179
10180 procedure Set_Entry_Call_Alternative
10181 (N : Node_Id; Val : Node_Id); -- Node1
10182
10183 procedure Set_Entry_Call_Statement
10184 (N : Node_Id; Val : Node_Id); -- Node1
10185
10186 procedure Set_Entry_Direct_Name
10187 (N : Node_Id; Val : Node_Id); -- Node1
10188
10189 procedure Set_Entry_Index
10190 (N : Node_Id; Val : Node_Id); -- Node5
10191
10192 procedure Set_Entry_Index_Specification
10193 (N : Node_Id; Val : Node_Id); -- Node4
10194
10195 procedure Set_Etype
10196 (N : Node_Id; Val : Node_Id); -- Node5
10197
10198 procedure Set_Exception_Choices
10199 (N : Node_Id; Val : List_Id); -- List4
10200
10201 procedure Set_Exception_Handlers
10202 (N : Node_Id; Val : List_Id); -- List5
10203
10204 procedure Set_Exception_Junk
10205 (N : Node_Id; Val : Boolean := True); -- Flag8
10206
10207 procedure Set_Exception_Label
10208 (N : Node_Id; Val : Node_Id); -- Node5
10209
10210 procedure Set_Expansion_Delayed
10211 (N : Node_Id; Val : Boolean := True); -- Flag11
10212
10213 procedure Set_Explicit_Actual_Parameter
10214 (N : Node_Id; Val : Node_Id); -- Node3
10215
10216 procedure Set_Explicit_Generic_Actual_Parameter
10217 (N : Node_Id; Val : Node_Id); -- Node1
10218
10219 procedure Set_Expression
10220 (N : Node_Id; Val : Node_Id); -- Node3
10221
10222 procedure Set_Expressions
10223 (N : Node_Id; Val : List_Id); -- List1
10224
10225 procedure Set_First_Bit
10226 (N : Node_Id; Val : Node_Id); -- Node3
10227
10228 procedure Set_First_Inlined_Subprogram
10229 (N : Node_Id; Val : Entity_Id); -- Node3
10230
10231 procedure Set_First_Name
10232 (N : Node_Id; Val : Boolean := True); -- Flag5
10233
10234 procedure Set_First_Named_Actual
10235 (N : Node_Id; Val : Node_Id); -- Node4
10236
10237 procedure Set_First_Real_Statement
10238 (N : Node_Id; Val : Node_Id); -- Node2
10239
10240 procedure Set_First_Subtype_Link
10241 (N : Node_Id; Val : Entity_Id); -- Node5
10242
10243 procedure Set_Float_Truncate
10244 (N : Node_Id; Val : Boolean := True); -- Flag11
10245
10246 procedure Set_Formal_Type_Definition
10247 (N : Node_Id; Val : Node_Id); -- Node3
10248
10249 procedure Set_Forwards_OK
10250 (N : Node_Id; Val : Boolean := True); -- Flag5
10251
10252 procedure Set_From_Aspect_Specification
10253 (N : Node_Id; Val : Boolean := True); -- Flag13
10254
10255 procedure Set_From_At_End
10256 (N : Node_Id; Val : Boolean := True); -- Flag4
10257
10258 procedure Set_From_At_Mod
10259 (N : Node_Id; Val : Boolean := True); -- Flag4
10260
10261 procedure Set_From_Conditional_Expression
10262 (N : Node_Id; Val : Boolean := True); -- Flag1
10263
10264 procedure Set_From_Default
10265 (N : Node_Id; Val : Boolean := True); -- Flag6
10266
10267 procedure Set_Generalized_Indexing
10268 (N : Node_Id; Val : Node_Id); -- Node4
10269
10270 procedure Set_Generic_Associations
10271 (N : Node_Id; Val : List_Id); -- List3
10272
10273 procedure Set_Generic_Formal_Declarations
10274 (N : Node_Id; Val : List_Id); -- List2
10275
10276 procedure Set_Generic_Parent
10277 (N : Node_Id; Val : Node_Id); -- Node5
10278
10279 procedure Set_Generic_Parent_Type
10280 (N : Node_Id; Val : Node_Id); -- Node4
10281
10282 procedure Set_Handled_Statement_Sequence
10283 (N : Node_Id; Val : Node_Id); -- Node4
10284
10285 procedure Set_Handler_List_Entry
10286 (N : Node_Id; Val : Node_Id); -- Node2
10287
10288 procedure Set_Has_Created_Identifier
10289 (N : Node_Id; Val : Boolean := True); -- Flag15
10290
10291 procedure Set_Has_Dereference_Action
10292 (N : Node_Id; Val : Boolean := True); -- Flag13
10293
10294 procedure Set_Has_Dynamic_Length_Check
10295 (N : Node_Id; Val : Boolean := True); -- Flag10
10296
10297 procedure Set_Has_Dynamic_Range_Check
10298 (N : Node_Id; Val : Boolean := True); -- Flag12
10299
10300 procedure Set_Has_Init_Expression
10301 (N : Node_Id; Val : Boolean := True); -- Flag14
10302
10303 procedure Set_Has_Local_Raise
10304 (N : Node_Id; Val : Boolean := True); -- Flag8
10305
10306 procedure Set_Has_No_Elaboration_Code
10307 (N : Node_Id; Val : Boolean := True); -- Flag17
10308
10309 procedure Set_Has_Pragma_Suppress_All
10310 (N : Node_Id; Val : Boolean := True); -- Flag14
10311
10312 procedure Set_Has_Private_View
10313 (N : Node_Id; Val : Boolean := True); -- Flag11
10314
10315 procedure Set_Has_Relative_Deadline_Pragma
10316 (N : Node_Id; Val : Boolean := True); -- Flag9
10317
10318 procedure Set_Has_Self_Reference
10319 (N : Node_Id; Val : Boolean := True); -- Flag13
10320
10321 procedure Set_Has_SP_Choice
10322 (N : Node_Id; Val : Boolean := True); -- Flag15
10323
10324 procedure Set_Has_Storage_Size_Pragma
10325 (N : Node_Id; Val : Boolean := True); -- Flag5
10326
10327 procedure Set_Has_Wide_Character
10328 (N : Node_Id; Val : Boolean := True); -- Flag11
10329
10330 procedure Set_Has_Wide_Wide_Character
10331 (N : Node_Id; Val : Boolean := True); -- Flag13
10332
10333 procedure Set_Header_Size_Added
10334 (N : Node_Id; Val : Boolean := True); -- Flag11
10335
10336 procedure Set_Hidden_By_Use_Clause
10337 (N : Node_Id; Val : Elist_Id); -- Elist4
10338
10339 procedure Set_High_Bound
10340 (N : Node_Id; Val : Node_Id); -- Node2
10341
10342 procedure Set_Identifier
10343 (N : Node_Id; Val : Node_Id); -- Node1
10344
10345 procedure Set_Interface_List
10346 (N : Node_Id; Val : List_Id); -- List2
10347
10348 procedure Set_Interface_Present
10349 (N : Node_Id; Val : Boolean := True); -- Flag16
10350
10351 procedure Set_Implicit_With
10352 (N : Node_Id; Val : Boolean := True); -- Flag16
10353
10354 procedure Set_Implicit_With_From_Instantiation
10355 (N : Node_Id; Val : Boolean := True); -- Flag12
10356
10357 procedure Set_Import_Interface_Present
10358 (N : Node_Id; Val : Boolean := True); -- Flag16
10359
10360 procedure Set_In_Present
10361 (N : Node_Id; Val : Boolean := True); -- Flag15
10362
10363 procedure Set_Includes_Infinities
10364 (N : Node_Id; Val : Boolean := True); -- Flag11
10365
10366 procedure Set_Incomplete_View
10367 (N : Node_Id; Val : Node_Id); -- Node2
10368
10369 procedure Set_Inherited_Discriminant
10370 (N : Node_Id; Val : Boolean := True); -- Flag13
10371
10372 procedure Set_Instance_Spec
10373 (N : Node_Id; Val : Node_Id); -- Node5
10374
10375 procedure Set_Intval
10376 (N : Node_Id; Val : Uint); -- Uint3
10377
10378 procedure Set_Is_Accessibility_Actual
10379 (N : Node_Id; Val : Boolean := True); -- Flag13
10380
10381 procedure Set_Is_Analyzed_Pragma
10382 (N : Node_Id; Val : Boolean := True); -- Flag5
10383
10384 procedure Set_Is_Asynchronous_Call_Block
10385 (N : Node_Id; Val : Boolean := True); -- Flag7
10386
10387 procedure Set_Is_Boolean_Aspect
10388 (N : Node_Id; Val : Boolean := True); -- Flag16
10389
10390 procedure Set_Is_Checked
10391 (N : Node_Id; Val : Boolean := True); -- Flag11
10392
10393 procedure Set_Is_Component_Left_Opnd
10394 (N : Node_Id; Val : Boolean := True); -- Flag13
10395
10396 procedure Set_Is_Component_Right_Opnd
10397 (N : Node_Id; Val : Boolean := True); -- Flag14
10398
10399 procedure Set_Is_Controlling_Actual
10400 (N : Node_Id; Val : Boolean := True); -- Flag16
10401
10402 procedure Set_Is_Delayed_Aspect
10403 (N : Node_Id; Val : Boolean := True); -- Flag14
10404
10405 procedure Set_Is_Disabled
10406 (N : Node_Id; Val : Boolean := True); -- Flag15
10407
10408 procedure Set_Is_Dynamic_Coextension
10409 (N : Node_Id; Val : Boolean := True); -- Flag18
10410
10411 procedure Set_Is_Elsif
10412 (N : Node_Id; Val : Boolean := True); -- Flag13
10413
10414 procedure Set_Is_Entry_Barrier_Function
10415 (N : Node_Id; Val : Boolean := True); -- Flag8
10416
10417 procedure Set_Is_Expanded_Build_In_Place_Call
10418 (N : Node_Id; Val : Boolean := True); -- Flag11
10419
10420 procedure Set_Is_Expanded_Contract
10421 (N : Node_Id; Val : Boolean := True); -- Flag1
10422
10423 procedure Set_Is_Finalization_Wrapper
10424 (N : Node_Id; Val : Boolean := True); -- Flag9
10425
10426 procedure Set_Is_Folded_In_Parser
10427 (N : Node_Id; Val : Boolean := True); -- Flag4
10428
10429 procedure Set_Is_Generic_Contract_Pragma
10430 (N : Node_Id; Val : Boolean := True); -- Flag2
10431
10432 procedure Set_Is_Ghost_Pragma
10433 (N : Node_Id; Val : Boolean := True); -- Flag3
10434
10435 procedure Set_Is_Ignored
10436 (N : Node_Id; Val : Boolean := True); -- Flag9
10437
10438 procedure Set_Is_In_Discriminant_Check
10439 (N : Node_Id; Val : Boolean := True); -- Flag11
10440
10441 procedure Set_Is_Inherited_Pragma
10442 (N : Node_Id; Val : Boolean := True); -- Flag4
10443
10444 procedure Set_Is_Machine_Number
10445 (N : Node_Id; Val : Boolean := True); -- Flag11
10446
10447 procedure Set_Is_Null_Loop
10448 (N : Node_Id; Val : Boolean := True); -- Flag16
10449
10450 procedure Set_Is_Overloaded
10451 (N : Node_Id; Val : Boolean := True); -- Flag5
10452
10453 procedure Set_Is_Power_Of_2_For_Shift
10454 (N : Node_Id; Val : Boolean := True); -- Flag13
10455
10456 procedure Set_Is_Prefixed_Call
10457 (N : Node_Id; Val : Boolean := True); -- Flag17
10458
10459 procedure Set_Is_Protected_Subprogram_Body
10460 (N : Node_Id; Val : Boolean := True); -- Flag7
10461
10462 procedure Set_Is_Qualified_Universal_Literal
10463 (N : Node_Id; Val : Boolean := True); -- Flag4
10464
10465 procedure Set_Is_Static_Coextension
10466 (N : Node_Id; Val : Boolean := True); -- Flag14
10467
10468 procedure Set_Is_Static_Expression
10469 (N : Node_Id; Val : Boolean := True); -- Flag6
10470
10471 procedure Set_Is_Subprogram_Descriptor
10472 (N : Node_Id; Val : Boolean := True); -- Flag16
10473
10474 procedure Set_Is_Task_Allocation_Block
10475 (N : Node_Id; Val : Boolean := True); -- Flag6
10476
10477 procedure Set_Is_Task_Body_Procedure
10478 (N : Node_Id; Val : Boolean := True); -- Flag1
10479
10480 procedure Set_Is_Task_Master
10481 (N : Node_Id; Val : Boolean := True); -- Flag5
10482
10483 procedure Set_Iteration_Scheme
10484 (N : Node_Id; Val : Node_Id); -- Node2
10485
10486 procedure Set_Iterator_Specification
10487 (N : Node_Id; Val : Node_Id); -- Node2
10488
10489 procedure Set_Itype
10490 (N : Node_Id; Val : Entity_Id); -- Node1
10491
10492 procedure Set_Kill_Range_Check
10493 (N : Node_Id; Val : Boolean := True); -- Flag11
10494
10495 procedure Set_Last_Bit
10496 (N : Node_Id; Val : Node_Id); -- Node4
10497
10498 procedure Set_Last_Name
10499 (N : Node_Id; Val : Boolean := True); -- Flag6
10500
10501 procedure Set_Library_Unit
10502 (N : Node_Id; Val : Node_Id); -- Node4
10503
10504 procedure Set_Label_Construct
10505 (N : Node_Id; Val : Node_Id); -- Node2
10506
10507 procedure Set_Left_Opnd
10508 (N : Node_Id; Val : Node_Id); -- Node2
10509
10510 procedure Set_Limited_View_Installed
10511 (N : Node_Id; Val : Boolean := True); -- Flag18
10512
10513 procedure Set_Limited_Present
10514 (N : Node_Id; Val : Boolean := True); -- Flag17
10515
10516 procedure Set_Literals
10517 (N : Node_Id; Val : List_Id); -- List1
10518
10519 procedure Set_Local_Raise_Not_OK
10520 (N : Node_Id; Val : Boolean := True); -- Flag7
10521
10522 procedure Set_Local_Raise_Statements
10523 (N : Node_Id; Val : Elist_Id); -- Elist1
10524
10525 procedure Set_Loop_Actions
10526 (N : Node_Id; Val : List_Id); -- List2
10527
10528 procedure Set_Loop_Parameter_Specification
10529 (N : Node_Id; Val : Node_Id); -- Node4
10530
10531 procedure Set_Low_Bound
10532 (N : Node_Id; Val : Node_Id); -- Node1
10533
10534 procedure Set_Mod_Clause
10535 (N : Node_Id; Val : Node_Id); -- Node2
10536
10537 procedure Set_More_Ids
10538 (N : Node_Id; Val : Boolean := True); -- Flag5
10539
10540 procedure Set_Must_Be_Byte_Aligned
10541 (N : Node_Id; Val : Boolean := True); -- Flag14
10542
10543 procedure Set_Must_Not_Freeze
10544 (N : Node_Id; Val : Boolean := True); -- Flag8
10545
10546 procedure Set_Must_Not_Override
10547 (N : Node_Id; Val : Boolean := True); -- Flag15
10548
10549 procedure Set_Must_Override
10550 (N : Node_Id; Val : Boolean := True); -- Flag14
10551
10552 procedure Set_Name
10553 (N : Node_Id; Val : Node_Id); -- Node2
10554
10555 procedure Set_Names
10556 (N : Node_Id; Val : List_Id); -- List2
10557
10558 procedure Set_Next_Entity
10559 (N : Node_Id; Val : Node_Id); -- Node2
10560
10561 procedure Set_Next_Exit_Statement
10562 (N : Node_Id; Val : Node_Id); -- Node3
10563
10564 procedure Set_Next_Implicit_With
10565 (N : Node_Id; Val : Node_Id); -- Node3
10566
10567 procedure Set_Next_Named_Actual
10568 (N : Node_Id; Val : Node_Id); -- Node4
10569
10570 procedure Set_Next_Pragma
10571 (N : Node_Id; Val : Node_Id); -- Node1
10572
10573 procedure Set_Next_Rep_Item
10574 (N : Node_Id; Val : Node_Id); -- Node5
10575
10576 procedure Set_Next_Use_Clause
10577 (N : Node_Id; Val : Node_Id); -- Node3
10578
10579 procedure Set_No_Ctrl_Actions
10580 (N : Node_Id; Val : Boolean := True); -- Flag7
10581
10582 procedure Set_No_Elaboration_Check
10583 (N : Node_Id; Val : Boolean := True); -- Flag14
10584
10585 procedure Set_No_Entities_Ref_In_Spec
10586 (N : Node_Id; Val : Boolean := True); -- Flag8
10587
10588 procedure Set_No_Initialization
10589 (N : Node_Id; Val : Boolean := True); -- Flag13
10590
10591 procedure Set_No_Minimize_Eliminate
10592 (N : Node_Id; Val : Boolean := True); -- Flag17
10593
10594 procedure Set_No_Side_Effect_Removal
10595 (N : Node_Id; Val : Boolean := True); -- Flag1
10596
10597 procedure Set_No_Truncation
10598 (N : Node_Id; Val : Boolean := True); -- Flag17
10599
10600 procedure Set_Non_Aliased_Prefix
10601 (N : Node_Id; Val : Boolean := True); -- Flag18
10602
10603 procedure Set_Null_Present
10604 (N : Node_Id; Val : Boolean := True); -- Flag13
10605
10606 procedure Set_Null_Excluding_Subtype
10607 (N : Node_Id; Val : Boolean := True); -- Flag16
10608
10609 procedure Set_Null_Exclusion_Present
10610 (N : Node_Id; Val : Boolean := True); -- Flag11
10611
10612 procedure Set_Null_Exclusion_In_Return_Present
10613 (N : Node_Id; Val : Boolean := True); -- Flag14
10614
10615 procedure Set_Null_Record_Present
10616 (N : Node_Id; Val : Boolean := True); -- Flag17
10617
10618 procedure Set_Object_Definition
10619 (N : Node_Id; Val : Node_Id); -- Node4
10620
10621 procedure Set_Of_Present
10622 (N : Node_Id; Val : Boolean := True); -- Flag16
10623
10624 procedure Set_Original_Discriminant
10625 (N : Node_Id; Val : Node_Id); -- Node2
10626
10627 procedure Set_Original_Entity
10628 (N : Node_Id; Val : Entity_Id); -- Node2
10629
10630 procedure Set_Others_Discrete_Choices
10631 (N : Node_Id; Val : List_Id); -- List1
10632
10633 procedure Set_Out_Present
10634 (N : Node_Id; Val : Boolean := True); -- Flag17
10635
10636 procedure Set_Parameter_Associations
10637 (N : Node_Id; Val : List_Id); -- List3
10638
10639 procedure Set_Parameter_Specifications
10640 (N : Node_Id; Val : List_Id); -- List3
10641
10642 procedure Set_Parameter_Type
10643 (N : Node_Id; Val : Node_Id); -- Node2
10644
10645 procedure Set_Parent_Spec
10646 (N : Node_Id; Val : Node_Id); -- Node4
10647
10648 procedure Set_Position
10649 (N : Node_Id; Val : Node_Id); -- Node2
10650
10651 procedure Set_Pragma_Argument_Associations
10652 (N : Node_Id; Val : List_Id); -- List2
10653
10654 procedure Set_Pragma_Identifier
10655 (N : Node_Id; Val : Node_Id); -- Node4
10656
10657 procedure Set_Pragmas_After
10658 (N : Node_Id; Val : List_Id); -- List5
10659
10660 procedure Set_Pragmas_Before
10661 (N : Node_Id; Val : List_Id); -- List4
10662
10663 procedure Set_Pre_Post_Conditions
10664 (N : Node_Id; Val : Node_Id); -- Node1
10665
10666 procedure Set_Prefix
10667 (N : Node_Id; Val : Node_Id); -- Node3
10668
10669 procedure Set_Premature_Use
10670 (N : Node_Id; Val : Node_Id); -- Node5
10671
10672 procedure Set_Present_Expr
10673 (N : Node_Id; Val : Uint); -- Uint3
10674
10675 procedure Set_Prev_Ids
10676 (N : Node_Id; Val : Boolean := True); -- Flag6
10677
10678 procedure Set_Print_In_Hex
10679 (N : Node_Id; Val : Boolean := True); -- Flag13
10680
10681 procedure Set_Private_Declarations
10682 (N : Node_Id; Val : List_Id); -- List3
10683
10684 procedure Set_Private_Present
10685 (N : Node_Id; Val : Boolean := True); -- Flag15
10686
10687 procedure Set_Procedure_To_Call
10688 (N : Node_Id; Val : Node_Id); -- Node2
10689
10690 procedure Set_Proper_Body
10691 (N : Node_Id; Val : Node_Id); -- Node1
10692
10693 procedure Set_Protected_Definition
10694 (N : Node_Id; Val : Node_Id); -- Node3
10695
10696 procedure Set_Protected_Present
10697 (N : Node_Id; Val : Boolean := True); -- Flag6
10698
10699 procedure Set_Raises_Constraint_Error
10700 (N : Node_Id; Val : Boolean := True); -- Flag7
10701
10702 procedure Set_Range_Constraint
10703 (N : Node_Id; Val : Node_Id); -- Node4
10704
10705 procedure Set_Range_Expression
10706 (N : Node_Id; Val : Node_Id); -- Node4
10707
10708 procedure Set_Real_Range_Specification
10709 (N : Node_Id; Val : Node_Id); -- Node4
10710
10711 procedure Set_Realval
10712 (N : Node_Id; Val : Ureal); -- Ureal3
10713
10714 procedure Set_Reason
10715 (N : Node_Id; Val : Uint); -- Uint3
10716
10717 procedure Set_Record_Extension_Part
10718 (N : Node_Id; Val : Node_Id); -- Node3
10719
10720 procedure Set_Redundant_Use
10721 (N : Node_Id; Val : Boolean := True); -- Flag13
10722
10723 procedure Set_Renaming_Exception
10724 (N : Node_Id; Val : Node_Id); -- Node2
10725
10726 procedure Set_Result_Definition
10727 (N : Node_Id; Val : Node_Id); -- Node4
10728
10729 procedure Set_Return_Object_Declarations
10730 (N : Node_Id; Val : List_Id); -- List3
10731
10732 procedure Set_Return_Statement_Entity
10733 (N : Node_Id; Val : Node_Id); -- Node5
10734
10735 procedure Set_Reverse_Present
10736 (N : Node_Id; Val : Boolean := True); -- Flag15
10737
10738 procedure Set_Right_Opnd
10739 (N : Node_Id; Val : Node_Id); -- Node3
10740
10741 procedure Set_Rounded_Result
10742 (N : Node_Id; Val : Boolean := True); -- Flag18
10743
10744 procedure Set_SCIL_Controlling_Tag
10745 (N : Node_Id; Val : Node_Id); -- Node5
10746
10747 procedure Set_SCIL_Entity
10748 (N : Node_Id; Val : Node_Id); -- Node4
10749
10750 procedure Set_SCIL_Tag_Value
10751 (N : Node_Id; Val : Node_Id); -- Node5
10752
10753 procedure Set_SCIL_Target_Prim
10754 (N : Node_Id; Val : Node_Id); -- Node2
10755
10756 procedure Set_Scope
10757 (N : Node_Id; Val : Node_Id); -- Node3
10758
10759 procedure Set_Select_Alternatives
10760 (N : Node_Id; Val : List_Id); -- List1
10761
10762 procedure Set_Selector_Name
10763 (N : Node_Id; Val : Node_Id); -- Node2
10764
10765 procedure Set_Selector_Names
10766 (N : Node_Id; Val : List_Id); -- List1
10767
10768 procedure Set_Shift_Count_OK
10769 (N : Node_Id; Val : Boolean := True); -- Flag4
10770
10771 procedure Set_Source_Type
10772 (N : Node_Id; Val : Entity_Id); -- Node1
10773
10774 procedure Set_Specification
10775 (N : Node_Id; Val : Node_Id); -- Node1
10776
10777 procedure Set_Split_PPC
10778 (N : Node_Id; Val : Boolean); -- Flag17
10779
10780 procedure Set_Statements
10781 (N : Node_Id; Val : List_Id); -- List3
10782
10783 procedure Set_Storage_Pool
10784 (N : Node_Id; Val : Node_Id); -- Node1
10785
10786 procedure Set_Subpool_Handle_Name
10787 (N : Node_Id; Val : Node_Id); -- Node4
10788
10789 procedure Set_Strval
10790 (N : Node_Id; Val : String_Id); -- Str3
10791
10792 procedure Set_Subtype_Indication
10793 (N : Node_Id; Val : Node_Id); -- Node5
10794
10795 procedure Set_Subtype_Mark
10796 (N : Node_Id; Val : Node_Id); -- Node4
10797
10798 procedure Set_Subtype_Marks
10799 (N : Node_Id; Val : List_Id); -- List2
10800
10801 procedure Set_Suppress_Assignment_Checks
10802 (N : Node_Id; Val : Boolean := True); -- Flag18
10803
10804 procedure Set_Suppress_Loop_Warnings
10805 (N : Node_Id; Val : Boolean := True); -- Flag17
10806
10807 procedure Set_Synchronized_Present
10808 (N : Node_Id; Val : Boolean := True); -- Flag7
10809
10810 procedure Set_Tagged_Present
10811 (N : Node_Id; Val : Boolean := True); -- Flag15
10812
10813 procedure Set_Target_Type
10814 (N : Node_Id; Val : Entity_Id); -- Node2
10815
10816 procedure Set_Task_Definition
10817 (N : Node_Id; Val : Node_Id); -- Node3
10818
10819 procedure Set_Task_Present
10820 (N : Node_Id; Val : Boolean := True); -- Flag5
10821
10822 procedure Set_Then_Actions
10823 (N : Node_Id; Val : List_Id); -- List2
10824
10825 procedure Set_Then_Statements
10826 (N : Node_Id; Val : List_Id); -- List2
10827
10828 procedure Set_Treat_Fixed_As_Integer
10829 (N : Node_Id; Val : Boolean := True); -- Flag14
10830
10831 procedure Set_Triggering_Alternative
10832 (N : Node_Id; Val : Node_Id); -- Node1
10833
10834 procedure Set_Triggering_Statement
10835 (N : Node_Id; Val : Node_Id); -- Node1
10836
10837 procedure Set_TSS_Elist
10838 (N : Node_Id; Val : Elist_Id); -- Elist3
10839
10840 procedure Set_Type_Definition
10841 (N : Node_Id; Val : Node_Id); -- Node3
10842
10843 procedure Set_Uneval_Old_Accept
10844 (N : Node_Id; Val : Boolean := True); -- Flag7
10845
10846 procedure Set_Uneval_Old_Warn
10847 (N : Node_Id; Val : Boolean := True); -- Flag18
10848
10849 procedure Set_Unit
10850 (N : Node_Id; Val : Node_Id); -- Node2
10851
10852 procedure Set_Unknown_Discriminants_Present
10853 (N : Node_Id; Val : Boolean := True); -- Flag13
10854
10855 procedure Set_Unreferenced_In_Spec
10856 (N : Node_Id; Val : Boolean := True); -- Flag7
10857
10858 procedure Set_Variant_Part
10859 (N : Node_Id; Val : Node_Id); -- Node4
10860
10861 procedure Set_Variants
10862 (N : Node_Id; Val : List_Id); -- List1
10863
10864 procedure Set_Visible_Declarations
10865 (N : Node_Id; Val : List_Id); -- List2
10866
10867 procedure Set_Uninitialized_Variable
10868 (N : Node_Id; Val : Node_Id); -- Node3
10869
10870 procedure Set_Used_Operations
10871 (N : Node_Id; Val : Elist_Id); -- Elist5
10872
10873 procedure Set_Was_Expression_Function
10874 (N : Node_Id; Val : Boolean := True); -- Flag18
10875
10876 procedure Set_Was_Originally_Stub
10877 (N : Node_Id; Val : Boolean := True); -- Flag13
10878
10879 procedure Set_Withed_Body
10880 (N : Node_Id; Val : Node_Id); -- Node1
10881
10882 -------------------------
10883 -- Iterator Procedures --
10884 -------------------------
10885
10886 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
10887
10888 procedure Next_Entity (N : in out Node_Id);
10889 procedure Next_Named_Actual (N : in out Node_Id);
10890 procedure Next_Rep_Item (N : in out Node_Id);
10891 procedure Next_Use_Clause (N : in out Node_Id);
10892
10893 -------------------------------------------
10894 -- Miscellaneous Tree Access Subprograms --
10895 -------------------------------------------
10896
10897 function End_Location (N : Node_Id) return Source_Ptr;
10898 -- N is an N_If_Statement or N_Case_Statement node, and this function
10899 -- returns the location of the IF token in the END IF sequence by
10900 -- translating the value of the End_Span field.
10901
10902 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
10903 -- N is an N_If_Statement or N_Case_Statement node. This procedure sets
10904 -- the End_Span field to correspond to the given value S. In other words,
10905 -- End_Span is set to the difference between S and Sloc (N), the starting
10906 -- location.
10907
10908 function Get_Pragma_Arg (Arg : Node_Id) return Node_Id;
10909 -- Given an argument to a pragma Arg, this function returns the expression
10910 -- for the argument. This is Arg itself, or, in the case where Arg is a
10911 -- pragma argument association node, the expression from this node.
10912
10913 --------------------------------
10914 -- Node_Kind Membership Tests --
10915 --------------------------------
10916
10917 -- The following functions allow a convenient notation for testing whether
10918 -- a Node_Kind value matches any one of a list of possible values. In each
10919 -- case True is returned if the given T argument is equal to any of the V
10920 -- arguments. Note that there is a similar set of functions defined in
10921 -- Atree where the first argument is a Node_Id whose Nkind field is tested.
10922
10923 function Nkind_In
10924 (T : Node_Kind;
10925 V1 : Node_Kind;
10926 V2 : Node_Kind) return Boolean;
10927
10928 function Nkind_In
10929 (T : Node_Kind;
10930 V1 : Node_Kind;
10931 V2 : Node_Kind;
10932 V3 : Node_Kind) return Boolean;
10933
10934 function Nkind_In
10935 (T : Node_Kind;
10936 V1 : Node_Kind;
10937 V2 : Node_Kind;
10938 V3 : Node_Kind;
10939 V4 : Node_Kind) return Boolean;
10940
10941 function Nkind_In
10942 (T : Node_Kind;
10943 V1 : Node_Kind;
10944 V2 : Node_Kind;
10945 V3 : Node_Kind;
10946 V4 : Node_Kind;
10947 V5 : Node_Kind) return Boolean;
10948
10949 function Nkind_In
10950 (T : Node_Kind;
10951 V1 : Node_Kind;
10952 V2 : Node_Kind;
10953 V3 : Node_Kind;
10954 V4 : Node_Kind;
10955 V5 : Node_Kind;
10956 V6 : Node_Kind) return Boolean;
10957
10958 function Nkind_In
10959 (T : Node_Kind;
10960 V1 : Node_Kind;
10961 V2 : Node_Kind;
10962 V3 : Node_Kind;
10963 V4 : Node_Kind;
10964 V5 : Node_Kind;
10965 V6 : Node_Kind;
10966 V7 : Node_Kind) return Boolean;
10967
10968 function Nkind_In
10969 (T : Node_Kind;
10970 V1 : Node_Kind;
10971 V2 : Node_Kind;
10972 V3 : Node_Kind;
10973 V4 : Node_Kind;
10974 V5 : Node_Kind;
10975 V6 : Node_Kind;
10976 V7 : Node_Kind;
10977 V8 : Node_Kind) return Boolean;
10978
10979 function Nkind_In
10980 (T : Node_Kind;
10981 V1 : Node_Kind;
10982 V2 : Node_Kind;
10983 V3 : Node_Kind;
10984 V4 : Node_Kind;
10985 V5 : Node_Kind;
10986 V6 : Node_Kind;
10987 V7 : Node_Kind;
10988 V8 : Node_Kind;
10989 V9 : Node_Kind) return Boolean;
10990
10991 pragma Inline (Nkind_In);
10992 -- Inline all above functions
10993
10994 -----------------------
10995 -- Utility Functions --
10996 -----------------------
10997
10998 function Pragma_Name (N : Node_Id) return Name_Id;
10999 pragma Inline (Pragma_Name);
11000 -- Convenient function to obtain Chars field of Pragma_Identifier
11001
11002 -----------------------------
11003 -- Syntactic Parent Tables --
11004 -----------------------------
11005
11006 -- These tables show for each node, and for each of the five fields,
11007 -- whether the corresponding field is syntactic (True) or semantic (False).
11008 -- Unused entries are also set to False.
11009
11010 subtype Field_Num is Natural range 1 .. 5;
11011
11012 Is_Syntactic_Field : constant array (Node_Kind, Field_Num) of Boolean := (
11013
11014 -- Following entries can be built automatically from the sinfo sources
11015 -- using the makeisf utility (currently this program is in spitbol).
11016
11017 N_Identifier =>
11018 (1 => True, -- Chars (Name1)
11019 2 => False, -- Original_Discriminant (Node2-Sem)
11020 3 => False, -- unused
11021 4 => False, -- Entity (Node4-Sem)
11022 5 => False), -- Etype (Node5-Sem)
11023
11024 N_Integer_Literal =>
11025 (1 => False, -- unused
11026 2 => False, -- Original_Entity (Node2-Sem)
11027 3 => True, -- Intval (Uint3)
11028 4 => False, -- unused
11029 5 => False), -- Etype (Node5-Sem)
11030
11031 N_Real_Literal =>
11032 (1 => False, -- unused
11033 2 => False, -- Original_Entity (Node2-Sem)
11034 3 => True, -- Realval (Ureal3)
11035 4 => False, -- Corresponding_Integer_Value (Uint4-Sem)
11036 5 => False), -- Etype (Node5-Sem)
11037
11038 N_Character_Literal =>
11039 (1 => True, -- Chars (Name1)
11040 2 => True, -- Char_Literal_Value (Uint2)
11041 3 => False, -- unused
11042 4 => False, -- Entity (Node4-Sem)
11043 5 => False), -- Etype (Node5-Sem)
11044
11045 N_String_Literal =>
11046 (1 => False, -- unused
11047 2 => False, -- unused
11048 3 => True, -- Strval (Str3)
11049 4 => False, -- unused
11050 5 => False), -- Etype (Node5-Sem)
11051
11052 N_Pragma =>
11053 (1 => False, -- Next_Pragma (Node1-Sem)
11054 2 => True, -- Pragma_Argument_Associations (List2)
11055 3 => False, -- Corresponding_Aspect (Node3-Sem)
11056 4 => True, -- Pragma_Identifier (Node4)
11057 5 => False), -- Next_Rep_Item (Node5-Sem)
11058
11059 N_Pragma_Argument_Association =>
11060 (1 => True, -- Chars (Name1)
11061 2 => False, -- unused
11062 3 => True, -- Expression (Node3)
11063 4 => False, -- unused
11064 5 => False), -- unused
11065
11066 N_Defining_Identifier =>
11067 (1 => True, -- Chars (Name1)
11068 2 => False, -- Next_Entity (Node2-Sem)
11069 3 => False, -- Scope (Node3-Sem)
11070 4 => False, -- unused
11071 5 => False), -- Etype (Node5-Sem)
11072
11073 N_Full_Type_Declaration =>
11074 (1 => True, -- Defining_Identifier (Node1)
11075 2 => False, -- Incomplete_View (Node2-Sem)
11076 3 => True, -- Type_Definition (Node3)
11077 4 => True, -- Discriminant_Specifications (List4)
11078 5 => False), -- unused
11079
11080 N_Subtype_Declaration =>
11081 (1 => True, -- Defining_Identifier (Node1)
11082 2 => False, -- unused
11083 3 => False, -- unused
11084 4 => False, -- Generic_Parent_Type (Node4-Sem)
11085 5 => True), -- Subtype_Indication (Node5)
11086
11087 N_Subtype_Indication =>
11088 (1 => False, -- unused
11089 2 => False, -- unused
11090 3 => True, -- Constraint (Node3)
11091 4 => True, -- Subtype_Mark (Node4)
11092 5 => False), -- Etype (Node5-Sem)
11093
11094 N_Object_Declaration =>
11095 (1 => True, -- Defining_Identifier (Node1)
11096 2 => False, -- Handler_List_Entry (Node2-Sem)
11097 3 => True, -- Expression (Node3)
11098 4 => True, -- Object_Definition (Node4)
11099 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
11100
11101 N_Number_Declaration =>
11102 (1 => True, -- Defining_Identifier (Node1)
11103 2 => False, -- unused
11104 3 => True, -- Expression (Node3)
11105 4 => False, -- unused
11106 5 => False), -- unused
11107
11108 N_Derived_Type_Definition =>
11109 (1 => False, -- unused
11110 2 => True, -- Interface_List (List2)
11111 3 => True, -- Record_Extension_Part (Node3)
11112 4 => False, -- unused
11113 5 => True), -- Subtype_Indication (Node5)
11114
11115 N_Range_Constraint =>
11116 (1 => False, -- unused
11117 2 => False, -- unused
11118 3 => False, -- unused
11119 4 => True, -- Range_Expression (Node4)
11120 5 => False), -- unused
11121
11122 N_Range =>
11123 (1 => True, -- Low_Bound (Node1)
11124 2 => True, -- High_Bound (Node2)
11125 3 => False, -- unused
11126 4 => False, -- unused
11127 5 => False), -- Etype (Node5-Sem)
11128
11129 N_Enumeration_Type_Definition =>
11130 (1 => True, -- Literals (List1)
11131 2 => False, -- unused
11132 3 => False, -- unused
11133 4 => True, -- End_Label (Node4)
11134 5 => False), -- unused
11135
11136 N_Defining_Character_Literal =>
11137 (1 => True, -- Chars (Name1)
11138 2 => False, -- Next_Entity (Node2-Sem)
11139 3 => False, -- Scope (Node3-Sem)
11140 4 => False, -- unused
11141 5 => False), -- Etype (Node5-Sem)
11142
11143 N_Signed_Integer_Type_Definition =>
11144 (1 => True, -- Low_Bound (Node1)
11145 2 => True, -- High_Bound (Node2)
11146 3 => False, -- unused
11147 4 => False, -- unused
11148 5 => False), -- unused
11149
11150 N_Modular_Type_Definition =>
11151 (1 => False, -- unused
11152 2 => False, -- unused
11153 3 => True, -- Expression (Node3)
11154 4 => False, -- unused
11155 5 => False), -- unused
11156
11157 N_Floating_Point_Definition =>
11158 (1 => False, -- unused
11159 2 => True, -- Digits_Expression (Node2)
11160 3 => False, -- unused
11161 4 => True, -- Real_Range_Specification (Node4)
11162 5 => False), -- unused
11163
11164 N_Real_Range_Specification =>
11165 (1 => True, -- Low_Bound (Node1)
11166 2 => True, -- High_Bound (Node2)
11167 3 => False, -- unused
11168 4 => False, -- unused
11169 5 => False), -- unused
11170
11171 N_Ordinary_Fixed_Point_Definition =>
11172 (1 => False, -- unused
11173 2 => False, -- unused
11174 3 => True, -- Delta_Expression (Node3)
11175 4 => True, -- Real_Range_Specification (Node4)
11176 5 => False), -- unused
11177
11178 N_Decimal_Fixed_Point_Definition =>
11179 (1 => False, -- unused
11180 2 => True, -- Digits_Expression (Node2)
11181 3 => True, -- Delta_Expression (Node3)
11182 4 => True, -- Real_Range_Specification (Node4)
11183 5 => False), -- unused
11184
11185 N_Digits_Constraint =>
11186 (1 => False, -- unused
11187 2 => True, -- Digits_Expression (Node2)
11188 3 => False, -- unused
11189 4 => True, -- Range_Constraint (Node4)
11190 5 => False), -- unused
11191
11192 N_Unconstrained_Array_Definition =>
11193 (1 => False, -- unused
11194 2 => True, -- Subtype_Marks (List2)
11195 3 => False, -- unused
11196 4 => True, -- Component_Definition (Node4)
11197 5 => False), -- unused
11198
11199 N_Constrained_Array_Definition =>
11200 (1 => False, -- unused
11201 2 => True, -- Discrete_Subtype_Definitions (List2)
11202 3 => False, -- unused
11203 4 => True, -- Component_Definition (Node4)
11204 5 => False), -- unused
11205
11206 N_Component_Definition =>
11207 (1 => False, -- unused
11208 2 => False, -- unused
11209 3 => True, -- Access_Definition (Node3)
11210 4 => False, -- unused
11211 5 => True), -- Subtype_Indication (Node5)
11212
11213 N_Discriminant_Specification =>
11214 (1 => True, -- Defining_Identifier (Node1)
11215 2 => False, -- unused
11216 3 => True, -- Expression (Node3)
11217 4 => False, -- unused
11218 5 => True), -- Discriminant_Type (Node5)
11219
11220 N_Index_Or_Discriminant_Constraint =>
11221 (1 => True, -- Constraints (List1)
11222 2 => False, -- unused
11223 3 => False, -- unused
11224 4 => False, -- unused
11225 5 => False), -- unused
11226
11227 N_Discriminant_Association =>
11228 (1 => True, -- Selector_Names (List1)
11229 2 => False, -- unused
11230 3 => True, -- Expression (Node3)
11231 4 => False, -- unused
11232 5 => False), -- unused
11233
11234 N_Record_Definition =>
11235 (1 => True, -- Component_List (Node1)
11236 2 => True, -- Interface_List (List2)
11237 3 => False, -- unused
11238 4 => True, -- End_Label (Node4)
11239 5 => False), -- unused
11240
11241 N_Component_List =>
11242 (1 => False, -- unused
11243 2 => False, -- unused
11244 3 => True, -- Component_Items (List3)
11245 4 => True, -- Variant_Part (Node4)
11246 5 => False), -- unused
11247
11248 N_Component_Declaration =>
11249 (1 => True, -- Defining_Identifier (Node1)
11250 2 => False, -- unused
11251 3 => True, -- Expression (Node3)
11252 4 => True, -- Component_Definition (Node4)
11253 5 => False), -- unused
11254
11255 N_Variant_Part =>
11256 (1 => True, -- Variants (List1)
11257 2 => True, -- Name (Node2)
11258 3 => False, -- unused
11259 4 => False, -- unused
11260 5 => False), -- unused
11261
11262 N_Variant =>
11263 (1 => True, -- Component_List (Node1)
11264 2 => False, -- Enclosing_Variant (Node2-Sem)
11265 3 => False, -- Present_Expr (Uint3-Sem)
11266 4 => True, -- Discrete_Choices (List4)
11267 5 => False), -- Dcheck_Function (Node5-Sem)
11268
11269 N_Others_Choice =>
11270 (1 => False, -- Others_Discrete_Choices (List1-Sem)
11271 2 => False, -- unused
11272 3 => False, -- unused
11273 4 => False, -- unused
11274 5 => False), -- unused
11275
11276 N_Access_To_Object_Definition =>
11277 (1 => False, -- unused
11278 2 => False, -- unused
11279 3 => False, -- unused
11280 4 => False, -- unused
11281 5 => True), -- Subtype_Indication (Node5)
11282
11283 N_Access_Function_Definition =>
11284 (1 => False, -- unused
11285 2 => False, -- unused
11286 3 => True, -- Parameter_Specifications (List3)
11287 4 => True, -- Result_Definition (Node4)
11288 5 => False), -- unused
11289
11290 N_Access_Procedure_Definition =>
11291 (1 => False, -- unused
11292 2 => False, -- unused
11293 3 => True, -- Parameter_Specifications (List3)
11294 4 => False, -- unused
11295 5 => False), -- unused
11296
11297 N_Access_Definition =>
11298 (1 => False, -- unused
11299 2 => False, -- unused
11300 3 => True, -- Access_To_Subprogram_Definition (Node3)
11301 4 => True, -- Subtype_Mark (Node4)
11302 5 => False), -- unused
11303
11304 N_Incomplete_Type_Declaration =>
11305 (1 => True, -- Defining_Identifier (Node1)
11306 2 => False, -- unused
11307 3 => False, -- unused
11308 4 => True, -- Discriminant_Specifications (List4)
11309 5 => False), -- Premature_Use
11310
11311 N_Explicit_Dereference =>
11312 (1 => False, -- unused
11313 2 => False, -- unused
11314 3 => True, -- Prefix (Node3)
11315 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
11316 5 => False), -- Etype (Node5-Sem)
11317
11318 N_Indexed_Component =>
11319 (1 => True, -- Expressions (List1)
11320 2 => False, -- unused
11321 3 => True, -- Prefix (Node3)
11322 4 => False, -- Generalized_Indexing (Node4-Sem)
11323 5 => False), -- Etype (Node5-Sem)
11324
11325 N_Slice =>
11326 (1 => False, -- unused
11327 2 => False, -- unused
11328 3 => True, -- Prefix (Node3)
11329 4 => True, -- Discrete_Range (Node4)
11330 5 => False), -- Etype (Node5-Sem)
11331
11332 N_Selected_Component =>
11333 (1 => False, -- unused
11334 2 => True, -- Selector_Name (Node2)
11335 3 => True, -- Prefix (Node3)
11336 4 => False, -- unused
11337 5 => False), -- Etype (Node5-Sem)
11338
11339 N_Attribute_Reference =>
11340 (1 => True, -- Expressions (List1)
11341 2 => True, -- Attribute_Name (Name2)
11342 3 => True, -- Prefix (Node3)
11343 4 => False, -- Entity (Node4-Sem)
11344 5 => False), -- Etype (Node5-Sem)
11345
11346 N_Aggregate =>
11347 (1 => True, -- Expressions (List1)
11348 2 => True, -- Component_Associations (List2)
11349 3 => False, -- Aggregate_Bounds (Node3-Sem)
11350 4 => False, -- unused
11351 5 => False), -- Etype (Node5-Sem)
11352
11353 N_Component_Association =>
11354 (1 => True, -- Choices (List1)
11355 2 => False, -- Loop_Actions (List2-Sem)
11356 3 => True, -- Expression (Node3)
11357 4 => False, -- unused
11358 5 => False), -- unused
11359
11360 N_Extension_Aggregate =>
11361 (1 => True, -- Expressions (List1)
11362 2 => True, -- Component_Associations (List2)
11363 3 => True, -- Ancestor_Part (Node3)
11364 4 => False, -- unused
11365 5 => False), -- Etype (Node5-Sem)
11366
11367 N_Null =>
11368 (1 => False, -- unused
11369 2 => False, -- unused
11370 3 => False, -- unused
11371 4 => False, -- unused
11372 5 => False), -- Etype (Node5-Sem)
11373
11374 N_And_Then =>
11375 (1 => False, -- Actions (List1-Sem)
11376 2 => True, -- Left_Opnd (Node2)
11377 3 => True, -- Right_Opnd (Node3)
11378 4 => False, -- unused
11379 5 => False), -- Etype (Node5-Sem)
11380
11381 N_Or_Else =>
11382 (1 => False, -- Actions (List1-Sem)
11383 2 => True, -- Left_Opnd (Node2)
11384 3 => True, -- Right_Opnd (Node3)
11385 4 => False, -- unused
11386 5 => False), -- Etype (Node5-Sem)
11387
11388 N_In =>
11389 (1 => False, -- unused
11390 2 => True, -- Left_Opnd (Node2)
11391 3 => True, -- Right_Opnd (Node3)
11392 4 => True, -- Alternatives (List4)
11393 5 => False), -- Etype (Node5-Sem)
11394
11395 N_Not_In =>
11396 (1 => False, -- unused
11397 2 => True, -- Left_Opnd (Node2)
11398 3 => True, -- Right_Opnd (Node3)
11399 4 => True, -- Alternatives (List4)
11400 5 => False), -- Etype (Node5-Sem)
11401
11402 N_Op_And =>
11403 (1 => True, -- Chars (Name1)
11404 2 => True, -- Left_Opnd (Node2)
11405 3 => True, -- Right_Opnd (Node3)
11406 4 => False, -- Entity (Node4-Sem)
11407 5 => False), -- Etype (Node5-Sem)
11408
11409 N_Op_Or =>
11410 (1 => True, -- Chars (Name1)
11411 2 => True, -- Left_Opnd (Node2)
11412 3 => True, -- Right_Opnd (Node3)
11413 4 => False, -- Entity (Node4-Sem)
11414 5 => False), -- Etype (Node5-Sem)
11415
11416 N_Op_Xor =>
11417 (1 => True, -- Chars (Name1)
11418 2 => True, -- Left_Opnd (Node2)
11419 3 => True, -- Right_Opnd (Node3)
11420 4 => False, -- Entity (Node4-Sem)
11421 5 => False), -- Etype (Node5-Sem)
11422
11423 N_Op_Eq =>
11424 (1 => True, -- Chars (Name1)
11425 2 => True, -- Left_Opnd (Node2)
11426 3 => True, -- Right_Opnd (Node3)
11427 4 => False, -- Entity (Node4-Sem)
11428 5 => False), -- Etype (Node5-Sem)
11429
11430 N_Op_Ne =>
11431 (1 => True, -- Chars (Name1)
11432 2 => True, -- Left_Opnd (Node2)
11433 3 => True, -- Right_Opnd (Node3)
11434 4 => False, -- Entity (Node4-Sem)
11435 5 => False), -- Etype (Node5-Sem)
11436
11437 N_Op_Lt =>
11438 (1 => True, -- Chars (Name1)
11439 2 => True, -- Left_Opnd (Node2)
11440 3 => True, -- Right_Opnd (Node3)
11441 4 => False, -- Entity (Node4-Sem)
11442 5 => False), -- Etype (Node5-Sem)
11443
11444 N_Op_Le =>
11445 (1 => True, -- Chars (Name1)
11446 2 => True, -- Left_Opnd (Node2)
11447 3 => True, -- Right_Opnd (Node3)
11448 4 => False, -- Entity (Node4-Sem)
11449 5 => False), -- Etype (Node5-Sem)
11450
11451 N_Op_Gt =>
11452 (1 => True, -- Chars (Name1)
11453 2 => True, -- Left_Opnd (Node2)
11454 3 => True, -- Right_Opnd (Node3)
11455 4 => False, -- Entity (Node4-Sem)
11456 5 => False), -- Etype (Node5-Sem)
11457
11458 N_Op_Ge =>
11459 (1 => True, -- Chars (Name1)
11460 2 => True, -- Left_Opnd (Node2)
11461 3 => True, -- Right_Opnd (Node3)
11462 4 => False, -- Entity (Node4-Sem)
11463 5 => False), -- Etype (Node5-Sem)
11464
11465 N_Op_Add =>
11466 (1 => True, -- Chars (Name1)
11467 2 => True, -- Left_Opnd (Node2)
11468 3 => True, -- Right_Opnd (Node3)
11469 4 => False, -- Entity (Node4-Sem)
11470 5 => False), -- Etype (Node5-Sem)
11471
11472 N_Op_Subtract =>
11473 (1 => True, -- Chars (Name1)
11474 2 => True, -- Left_Opnd (Node2)
11475 3 => True, -- Right_Opnd (Node3)
11476 4 => False, -- Entity (Node4-Sem)
11477 5 => False), -- Etype (Node5-Sem)
11478
11479 N_Op_Concat =>
11480 (1 => True, -- Chars (Name1)
11481 2 => True, -- Left_Opnd (Node2)
11482 3 => True, -- Right_Opnd (Node3)
11483 4 => False, -- Entity (Node4-Sem)
11484 5 => False), -- Etype (Node5-Sem)
11485
11486 N_Op_Multiply =>
11487 (1 => True, -- Chars (Name1)
11488 2 => True, -- Left_Opnd (Node2)
11489 3 => True, -- Right_Opnd (Node3)
11490 4 => False, -- Entity (Node4-Sem)
11491 5 => False), -- Etype (Node5-Sem)
11492
11493 N_Op_Divide =>
11494 (1 => True, -- Chars (Name1)
11495 2 => True, -- Left_Opnd (Node2)
11496 3 => True, -- Right_Opnd (Node3)
11497 4 => False, -- Entity (Node4-Sem)
11498 5 => False), -- Etype (Node5-Sem)
11499
11500 N_Op_Mod =>
11501 (1 => True, -- Chars (Name1)
11502 2 => True, -- Left_Opnd (Node2)
11503 3 => True, -- Right_Opnd (Node3)
11504 4 => False, -- Entity (Node4-Sem)
11505 5 => False), -- Etype (Node5-Sem)
11506
11507 N_Op_Rem =>
11508 (1 => True, -- Chars (Name1)
11509 2 => True, -- Left_Opnd (Node2)
11510 3 => True, -- Right_Opnd (Node3)
11511 4 => False, -- Entity (Node4-Sem)
11512 5 => False), -- Etype (Node5-Sem)
11513
11514 N_Op_Expon =>
11515 (1 => True, -- Chars (Name1)
11516 2 => True, -- Left_Opnd (Node2)
11517 3 => True, -- Right_Opnd (Node3)
11518 4 => False, -- Entity (Node4-Sem)
11519 5 => False), -- Etype (Node5-Sem)
11520
11521 N_Op_Plus =>
11522 (1 => True, -- Chars (Name1)
11523 2 => False, -- unused
11524 3 => True, -- Right_Opnd (Node3)
11525 4 => False, -- Entity (Node4-Sem)
11526 5 => False), -- Etype (Node5-Sem)
11527
11528 N_Op_Minus =>
11529 (1 => True, -- Chars (Name1)
11530 2 => False, -- unused
11531 3 => True, -- Right_Opnd (Node3)
11532 4 => False, -- Entity (Node4-Sem)
11533 5 => False), -- Etype (Node5-Sem)
11534
11535 N_Op_Abs =>
11536 (1 => True, -- Chars (Name1)
11537 2 => False, -- unused
11538 3 => True, -- Right_Opnd (Node3)
11539 4 => False, -- Entity (Node4-Sem)
11540 5 => False), -- Etype (Node5-Sem)
11541
11542 N_Op_Not =>
11543 (1 => True, -- Chars (Name1)
11544 2 => False, -- unused
11545 3 => True, -- Right_Opnd (Node3)
11546 4 => False, -- Entity (Node4-Sem)
11547 5 => False), -- Etype (Node5-Sem)
11548
11549 N_Type_Conversion =>
11550 (1 => False, -- unused
11551 2 => False, -- unused
11552 3 => True, -- Expression (Node3)
11553 4 => True, -- Subtype_Mark (Node4)
11554 5 => False), -- Etype (Node5-Sem)
11555
11556 N_Qualified_Expression =>
11557 (1 => False, -- unused
11558 2 => False, -- unused
11559 3 => True, -- Expression (Node3)
11560 4 => True, -- Subtype_Mark (Node4)
11561 5 => False), -- Etype (Node5-Sem)
11562
11563 N_Quantified_Expression =>
11564 (1 => True, -- Condition (Node1)
11565 2 => True, -- Iterator_Specification
11566 3 => False, -- unused
11567 4 => True, -- Loop_Parameter_Specification (Node4)
11568 5 => False), -- Etype (Node5-Sem)
11569
11570 N_Allocator =>
11571 (1 => False, -- Storage_Pool (Node1-Sem)
11572 2 => False, -- Procedure_To_Call (Node2-Sem)
11573 3 => True, -- Expression (Node3)
11574 4 => True, -- Subpool_Handle_Name (Node4)
11575 5 => False), -- Etype (Node5-Sem)
11576
11577 N_Null_Statement =>
11578 (1 => False, -- unused
11579 2 => False, -- unused
11580 3 => False, -- unused
11581 4 => False, -- unused
11582 5 => False), -- unused
11583
11584 N_Label =>
11585 (1 => True, -- Identifier (Node1)
11586 2 => False, -- unused
11587 3 => False, -- unused
11588 4 => False, -- unused
11589 5 => False), -- unused
11590
11591 N_Assignment_Statement =>
11592 (1 => False, -- unused
11593 2 => True, -- Name (Node2)
11594 3 => True, -- Expression (Node3)
11595 4 => False, -- unused
11596 5 => False), -- unused
11597
11598 N_If_Statement =>
11599 (1 => True, -- Condition (Node1)
11600 2 => True, -- Then_Statements (List2)
11601 3 => True, -- Elsif_Parts (List3)
11602 4 => True, -- Else_Statements (List4)
11603 5 => True), -- End_Span (Uint5)
11604
11605 N_Elsif_Part =>
11606 (1 => True, -- Condition (Node1)
11607 2 => True, -- Then_Statements (List2)
11608 3 => False, -- Condition_Actions (List3-Sem)
11609 4 => False, -- unused
11610 5 => False), -- unused
11611
11612 N_Case_Expression =>
11613 (1 => False, -- unused
11614 2 => False, -- unused
11615 3 => True, -- Expression (Node3)
11616 4 => True, -- Alternatives (List4)
11617 5 => False), -- unused
11618
11619 N_Case_Expression_Alternative =>
11620 (1 => False, -- Actions (List1-Sem)
11621 2 => False, -- unused
11622 3 => True, -- Statements (List3)
11623 4 => True, -- Expression (Node4)
11624 5 => False), -- unused
11625
11626 N_Case_Statement =>
11627 (1 => False, -- unused
11628 2 => False, -- unused
11629 3 => True, -- Expression (Node3)
11630 4 => True, -- Alternatives (List4)
11631 5 => True), -- End_Span (Uint5)
11632
11633 N_Case_Statement_Alternative =>
11634 (1 => False, -- unused
11635 2 => False, -- unused
11636 3 => True, -- Statements (List3)
11637 4 => True, -- Discrete_Choices (List4)
11638 5 => False), -- unused
11639
11640 N_Loop_Statement =>
11641 (1 => True, -- Identifier (Node1)
11642 2 => True, -- Iteration_Scheme (Node2)
11643 3 => True, -- Statements (List3)
11644 4 => True, -- End_Label (Node4)
11645 5 => False), -- unused
11646
11647 N_Iteration_Scheme =>
11648 (1 => True, -- Condition (Node1)
11649 2 => True, -- Iterator_Specification (Node2)
11650 3 => False, -- Condition_Actions (List3-Sem)
11651 4 => True, -- Loop_Parameter_Specification (Node4)
11652 5 => False), -- unused
11653
11654 N_Loop_Parameter_Specification =>
11655 (1 => True, -- Defining_Identifier (Node1)
11656 2 => False, -- unused
11657 3 => False, -- unused
11658 4 => True, -- Discrete_Subtype_Definition (Node4)
11659 5 => False), -- unused
11660
11661 N_Iterator_Specification =>
11662 (1 => True, -- Defining_Identifier (Node1)
11663 2 => True, -- Name (Node2)
11664 3 => False, -- Unused
11665 4 => False, -- Unused
11666 5 => True), -- Subtype_Indication (Node5)
11667
11668 N_Block_Statement =>
11669 (1 => True, -- Identifier (Node1)
11670 2 => True, -- Declarations (List2)
11671 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11672 4 => True, -- Handled_Statement_Sequence (Node4)
11673 5 => False), -- unused
11674
11675 N_Exit_Statement =>
11676 (1 => True, -- Condition (Node1)
11677 2 => True, -- Name (Node2)
11678 3 => False, -- unused
11679 4 => False, -- unused
11680 5 => False), -- unused
11681
11682 N_Goto_Statement =>
11683 (1 => False, -- unused
11684 2 => True, -- Name (Node2)
11685 3 => False, -- unused
11686 4 => False, -- unused
11687 5 => False), -- unused
11688
11689 N_Subprogram_Declaration =>
11690 (1 => True, -- Specification (Node1)
11691 2 => False, -- unused
11692 3 => False, -- Body_To_Inline (Node3-Sem)
11693 4 => False, -- Parent_Spec (Node4-Sem)
11694 5 => False), -- Corresponding_Body (Node5-Sem)
11695
11696 N_Abstract_Subprogram_Declaration =>
11697 (1 => True, -- Specification (Node1)
11698 2 => False, -- unused
11699 3 => False, -- unused
11700 4 => False, -- unused
11701 5 => False), -- unused
11702
11703 N_Function_Specification =>
11704 (1 => True, -- Defining_Unit_Name (Node1)
11705 2 => False, -- unused
11706 3 => True, -- Parameter_Specifications (List3)
11707 4 => True, -- Result_Definition (Node4)
11708 5 => False), -- Generic_Parent (Node5-Sem)
11709
11710 N_Procedure_Specification =>
11711 (1 => True, -- Defining_Unit_Name (Node1)
11712 2 => False, -- unused
11713 3 => True, -- Parameter_Specifications (List3)
11714 4 => False, -- unused
11715 5 => False), -- Generic_Parent (Node5-Sem)
11716
11717 N_Designator =>
11718 (1 => True, -- Identifier (Node1)
11719 2 => True, -- Name (Node2)
11720 3 => False, -- unused
11721 4 => False, -- unused
11722 5 => False), -- unused
11723
11724 N_Defining_Program_Unit_Name =>
11725 (1 => True, -- Defining_Identifier (Node1)
11726 2 => True, -- Name (Node2)
11727 3 => False, -- unused
11728 4 => False, -- unused
11729 5 => False), -- unused
11730
11731 N_Operator_Symbol =>
11732 (1 => True, -- Chars (Name1)
11733 2 => False, -- unused
11734 3 => True, -- Strval (Str3)
11735 4 => False, -- Entity (Node4-Sem)
11736 5 => False), -- Etype (Node5-Sem)
11737
11738 N_Defining_Operator_Symbol =>
11739 (1 => True, -- Chars (Name1)
11740 2 => False, -- Next_Entity (Node2-Sem)
11741 3 => False, -- Scope (Node3-Sem)
11742 4 => False, -- unused
11743 5 => False), -- Etype (Node5-Sem)
11744
11745 N_Parameter_Specification =>
11746 (1 => True, -- Defining_Identifier (Node1)
11747 2 => True, -- Parameter_Type (Node2)
11748 3 => True, -- Expression (Node3)
11749 4 => False, -- unused
11750 5 => False), -- Default_Expression (Node5-Sem)
11751
11752 N_Subprogram_Body =>
11753 (1 => True, -- Specification (Node1)
11754 2 => True, -- Declarations (List2)
11755 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11756 4 => True, -- Handled_Statement_Sequence (Node4)
11757 5 => False), -- Corresponding_Spec (Node5-Sem)
11758
11759 N_Expression_Function =>
11760 (1 => True, -- Specification (Node1)
11761 2 => False, -- unused
11762 3 => True, -- Expression (Node3)
11763 4 => False, -- unused
11764 5 => False), -- unused
11765
11766 N_Procedure_Call_Statement =>
11767 (1 => False, -- Controlling_Argument (Node1-Sem)
11768 2 => True, -- Name (Node2)
11769 3 => True, -- Parameter_Associations (List3)
11770 4 => False, -- First_Named_Actual (Node4-Sem)
11771 5 => False), -- Etype (Node5-Sem)
11772
11773 N_Function_Call =>
11774 (1 => False, -- Controlling_Argument (Node1-Sem)
11775 2 => True, -- Name (Node2)
11776 3 => True, -- Parameter_Associations (List3)
11777 4 => False, -- First_Named_Actual (Node4-Sem)
11778 5 => False), -- Etype (Node5-Sem)
11779
11780 N_Parameter_Association =>
11781 (1 => False, -- unused
11782 2 => True, -- Selector_Name (Node2)
11783 3 => True, -- Explicit_Actual_Parameter (Node3)
11784 4 => False, -- Next_Named_Actual (Node4-Sem)
11785 5 => False), -- unused
11786
11787 N_Simple_Return_Statement =>
11788 (1 => False, -- Storage_Pool (Node1-Sem)
11789 2 => False, -- Procedure_To_Call (Node2-Sem)
11790 3 => True, -- Expression (Node3)
11791 4 => False, -- unused
11792 5 => False), -- Return_Statement_Entity (Node5-Sem)
11793
11794 N_Extended_Return_Statement =>
11795 (1 => False, -- Storage_Pool (Node1-Sem)
11796 2 => False, -- Procedure_To_Call (Node2-Sem)
11797 3 => True, -- Return_Object_Declarations (List3)
11798 4 => True, -- Handled_Statement_Sequence (Node4)
11799 5 => False), -- Return_Statement_Entity (Node5-Sem)
11800
11801 N_Package_Declaration =>
11802 (1 => True, -- Specification (Node1)
11803 2 => False, -- unused
11804 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11805 4 => False, -- Parent_Spec (Node4-Sem)
11806 5 => False), -- Corresponding_Body (Node5-Sem)
11807
11808 N_Package_Specification =>
11809 (1 => True, -- Defining_Unit_Name (Node1)
11810 2 => True, -- Visible_Declarations (List2)
11811 3 => True, -- Private_Declarations (List3)
11812 4 => True, -- End_Label (Node4)
11813 5 => False), -- Generic_Parent (Node5-Sem)
11814
11815 N_Package_Body =>
11816 (1 => True, -- Defining_Unit_Name (Node1)
11817 2 => True, -- Declarations (List2)
11818 3 => False, -- unused
11819 4 => True, -- Handled_Statement_Sequence (Node4)
11820 5 => False), -- Corresponding_Spec (Node5-Sem)
11821
11822 N_Private_Type_Declaration =>
11823 (1 => True, -- Defining_Identifier (Node1)
11824 2 => False, -- unused
11825 3 => False, -- unused
11826 4 => True, -- Discriminant_Specifications (List4)
11827 5 => False), -- unused
11828
11829 N_Private_Extension_Declaration =>
11830 (1 => True, -- Defining_Identifier (Node1)
11831 2 => True, -- Interface_List (List2)
11832 3 => False, -- unused
11833 4 => True, -- Discriminant_Specifications (List4)
11834 5 => True), -- Subtype_Indication (Node5)
11835
11836 N_Use_Package_Clause =>
11837 (1 => False, -- unused
11838 2 => True, -- Names (List2)
11839 3 => False, -- Next_Use_Clause (Node3-Sem)
11840 4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
11841 5 => False), -- unused
11842
11843 N_Use_Type_Clause =>
11844 (1 => False, -- unused
11845 2 => True, -- Subtype_Marks (List2)
11846 3 => False, -- Next_Use_Clause (Node3-Sem)
11847 4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
11848 5 => False), -- unused
11849
11850 N_Object_Renaming_Declaration =>
11851 (1 => True, -- Defining_Identifier (Node1)
11852 2 => True, -- Name (Node2)
11853 3 => True, -- Access_Definition (Node3)
11854 4 => True, -- Subtype_Mark (Node4)
11855 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
11856
11857 N_Exception_Renaming_Declaration =>
11858 (1 => True, -- Defining_Identifier (Node1)
11859 2 => True, -- Name (Node2)
11860 3 => False, -- unused
11861 4 => False, -- unused
11862 5 => False), -- unused
11863
11864 N_Package_Renaming_Declaration =>
11865 (1 => True, -- Defining_Unit_Name (Node1)
11866 2 => True, -- Name (Node2)
11867 3 => False, -- unused
11868 4 => False, -- Parent_Spec (Node4-Sem)
11869 5 => False), -- unused
11870
11871 N_Subprogram_Renaming_Declaration =>
11872 (1 => True, -- Specification (Node1)
11873 2 => True, -- Name (Node2)
11874 3 => False, -- Corresponding_Formal_Spec (Node3-Sem)
11875 4 => False, -- Parent_Spec (Node4-Sem)
11876 5 => False), -- Corresponding_Spec (Node5-Sem)
11877
11878 N_Generic_Package_Renaming_Declaration =>
11879 (1 => True, -- Defining_Unit_Name (Node1)
11880 2 => True, -- Name (Node2)
11881 3 => False, -- unused
11882 4 => False, -- Parent_Spec (Node4-Sem)
11883 5 => False), -- unused
11884
11885 N_Generic_Procedure_Renaming_Declaration =>
11886 (1 => True, -- Defining_Unit_Name (Node1)
11887 2 => True, -- Name (Node2)
11888 3 => False, -- unused
11889 4 => False, -- Parent_Spec (Node4-Sem)
11890 5 => False), -- unused
11891
11892 N_Generic_Function_Renaming_Declaration =>
11893 (1 => True, -- Defining_Unit_Name (Node1)
11894 2 => True, -- Name (Node2)
11895 3 => False, -- unused
11896 4 => False, -- Parent_Spec (Node4-Sem)
11897 5 => False), -- unused
11898
11899 N_Task_Type_Declaration =>
11900 (1 => True, -- Defining_Identifier (Node1)
11901 2 => True, -- Interface_List (List2)
11902 3 => True, -- Task_Definition (Node3)
11903 4 => True, -- Discriminant_Specifications (List4)
11904 5 => False), -- Corresponding_Body (Node5-Sem)
11905
11906 N_Single_Task_Declaration =>
11907 (1 => True, -- Defining_Identifier (Node1)
11908 2 => True, -- Interface_List (List2)
11909 3 => True, -- Task_Definition (Node3)
11910 4 => False, -- unused
11911 5 => False), -- unused
11912
11913 N_Task_Definition =>
11914 (1 => False, -- unused
11915 2 => True, -- Visible_Declarations (List2)
11916 3 => True, -- Private_Declarations (List3)
11917 4 => True, -- End_Label (Node4)
11918 5 => False), -- unused
11919
11920 N_Task_Body =>
11921 (1 => True, -- Defining_Identifier (Node1)
11922 2 => True, -- Declarations (List2)
11923 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11924 4 => True, -- Handled_Statement_Sequence (Node4)
11925 5 => False), -- Corresponding_Spec (Node5-Sem)
11926
11927 N_Protected_Type_Declaration =>
11928 (1 => True, -- Defining_Identifier (Node1)
11929 2 => True, -- Interface_List (List2)
11930 3 => True, -- Protected_Definition (Node3)
11931 4 => True, -- Discriminant_Specifications (List4)
11932 5 => False), -- Corresponding_Body (Node5-Sem)
11933
11934 N_Single_Protected_Declaration =>
11935 (1 => True, -- Defining_Identifier (Node1)
11936 2 => True, -- Interface_List (List2)
11937 3 => True, -- Protected_Definition (Node3)
11938 4 => False, -- unused
11939 5 => False), -- unused
11940
11941 N_Protected_Definition =>
11942 (1 => False, -- unused
11943 2 => True, -- Visible_Declarations (List2)
11944 3 => True, -- Private_Declarations (List3)
11945 4 => True, -- End_Label (Node4)
11946 5 => False), -- unused
11947
11948 N_Protected_Body =>
11949 (1 => True, -- Defining_Identifier (Node1)
11950 2 => True, -- Declarations (List2)
11951 3 => False, -- unused
11952 4 => True, -- End_Label (Node4)
11953 5 => False), -- Corresponding_Spec (Node5-Sem)
11954
11955 N_Entry_Declaration =>
11956 (1 => True, -- Defining_Identifier (Node1)
11957 2 => False, -- unused
11958 3 => True, -- Parameter_Specifications (List3)
11959 4 => True, -- Discrete_Subtype_Definition (Node4)
11960 5 => False), -- Corresponding_Body (Node5-Sem)
11961
11962 N_Accept_Statement =>
11963 (1 => True, -- Entry_Direct_Name (Node1)
11964 2 => True, -- Declarations (List2)
11965 3 => True, -- Parameter_Specifications (List3)
11966 4 => True, -- Handled_Statement_Sequence (Node4)
11967 5 => True), -- Entry_Index (Node5)
11968
11969 N_Entry_Body =>
11970 (1 => True, -- Defining_Identifier (Node1)
11971 2 => True, -- Declarations (List2)
11972 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11973 4 => True, -- Handled_Statement_Sequence (Node4)
11974 5 => True), -- Entry_Body_Formal_Part (Node5)
11975
11976 N_Entry_Body_Formal_Part =>
11977 (1 => True, -- Condition (Node1)
11978 2 => False, -- unused
11979 3 => True, -- Parameter_Specifications (List3)
11980 4 => True, -- Entry_Index_Specification (Node4)
11981 5 => False), -- unused
11982
11983 N_Entry_Index_Specification =>
11984 (1 => True, -- Defining_Identifier (Node1)
11985 2 => False, -- unused
11986 3 => False, -- unused
11987 4 => True, -- Discrete_Subtype_Definition (Node4)
11988 5 => False), -- unused
11989
11990 N_Entry_Call_Statement =>
11991 (1 => False, -- unused
11992 2 => True, -- Name (Node2)
11993 3 => True, -- Parameter_Associations (List3)
11994 4 => False, -- First_Named_Actual (Node4-Sem)
11995 5 => False), -- unused
11996
11997 N_Requeue_Statement =>
11998 (1 => False, -- unused
11999 2 => True, -- Name (Node2)
12000 3 => False, -- unused
12001 4 => False, -- unused
12002 5 => False), -- unused
12003
12004 N_Delay_Until_Statement =>
12005 (1 => False, -- unused
12006 2 => False, -- unused
12007 3 => True, -- Expression (Node3)
12008 4 => False, -- unused
12009 5 => False), -- unused
12010
12011 N_Delay_Relative_Statement =>
12012 (1 => False, -- unused
12013 2 => False, -- unused
12014 3 => True, -- Expression (Node3)
12015 4 => False, -- unused
12016 5 => False), -- unused
12017
12018 N_Selective_Accept =>
12019 (1 => True, -- Select_Alternatives (List1)
12020 2 => False, -- unused
12021 3 => False, -- unused
12022 4 => True, -- Else_Statements (List4)
12023 5 => False), -- unused
12024
12025 N_Accept_Alternative =>
12026 (1 => True, -- Condition (Node1)
12027 2 => True, -- Accept_Statement (Node2)
12028 3 => True, -- Statements (List3)
12029 4 => True, -- Pragmas_Before (List4)
12030 5 => False), -- Accept_Handler_Records (List5-Sem)
12031
12032 N_Delay_Alternative =>
12033 (1 => True, -- Condition (Node1)
12034 2 => True, -- Delay_Statement (Node2)
12035 3 => True, -- Statements (List3)
12036 4 => True, -- Pragmas_Before (List4)
12037 5 => False), -- unused
12038
12039 N_Terminate_Alternative =>
12040 (1 => True, -- Condition (Node1)
12041 2 => False, -- unused
12042 3 => False, -- unused
12043 4 => True, -- Pragmas_Before (List4)
12044 5 => True), -- Pragmas_After (List5)
12045
12046 N_Timed_Entry_Call =>
12047 (1 => True, -- Entry_Call_Alternative (Node1)
12048 2 => False, -- unused
12049 3 => False, -- unused
12050 4 => True, -- Delay_Alternative (Node4)
12051 5 => False), -- unused
12052
12053 N_Entry_Call_Alternative =>
12054 (1 => True, -- Entry_Call_Statement (Node1)
12055 2 => False, -- unused
12056 3 => True, -- Statements (List3)
12057 4 => True, -- Pragmas_Before (List4)
12058 5 => False), -- unused
12059
12060 N_Conditional_Entry_Call =>
12061 (1 => True, -- Entry_Call_Alternative (Node1)
12062 2 => False, -- unused
12063 3 => False, -- unused
12064 4 => True, -- Else_Statements (List4)
12065 5 => False), -- unused
12066
12067 N_Asynchronous_Select =>
12068 (1 => True, -- Triggering_Alternative (Node1)
12069 2 => True, -- Abortable_Part (Node2)
12070 3 => False, -- unused
12071 4 => False, -- unused
12072 5 => False), -- unused
12073
12074 N_Triggering_Alternative =>
12075 (1 => True, -- Triggering_Statement (Node1)
12076 2 => False, -- unused
12077 3 => True, -- Statements (List3)
12078 4 => True, -- Pragmas_Before (List4)
12079 5 => False), -- unused
12080
12081 N_Abortable_Part =>
12082 (1 => False, -- unused
12083 2 => False, -- unused
12084 3 => True, -- Statements (List3)
12085 4 => False, -- unused
12086 5 => False), -- unused
12087
12088 N_Abort_Statement =>
12089 (1 => False, -- unused
12090 2 => True, -- Names (List2)
12091 3 => False, -- unused
12092 4 => False, -- unused
12093 5 => False), -- unused
12094
12095 N_Compilation_Unit =>
12096 (1 => True, -- Context_Items (List1)
12097 2 => True, -- Unit (Node2)
12098 3 => False, -- First_Inlined_Subprogram (Node3-Sem)
12099 4 => False, -- Library_Unit (Node4-Sem)
12100 5 => True), -- Aux_Decls_Node (Node5)
12101
12102 N_Compilation_Unit_Aux =>
12103 (1 => True, -- Actions (List1)
12104 2 => True, -- Declarations (List2)
12105 3 => False, -- Default_Storage_Pool (Node3)
12106 4 => True, -- Config_Pragmas (List4)
12107 5 => True), -- Pragmas_After (List5)
12108
12109 N_With_Clause =>
12110 (1 => False, -- unused
12111 2 => True, -- Name (Node2)
12112 3 => False, -- unused
12113 4 => False, -- Library_Unit (Node4-Sem)
12114 5 => False), -- Corresponding_Spec (Node5-Sem)
12115
12116 N_Subprogram_Body_Stub =>
12117 (1 => True, -- Specification (Node1)
12118 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12119 3 => False, -- unused
12120 4 => False, -- Library_Unit (Node4-Sem)
12121 5 => False), -- Corresponding_Body (Node5-Sem)
12122
12123 N_Package_Body_Stub =>
12124 (1 => True, -- Defining_Identifier (Node1)
12125 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12126 3 => False, -- unused
12127 4 => False, -- Library_Unit (Node4-Sem)
12128 5 => False), -- Corresponding_Body (Node5-Sem)
12129
12130 N_Task_Body_Stub =>
12131 (1 => True, -- Defining_Identifier (Node1)
12132 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12133 3 => False, -- unused
12134 4 => False, -- Library_Unit (Node4-Sem)
12135 5 => False), -- Corresponding_Body (Node5-Sem)
12136
12137 N_Protected_Body_Stub =>
12138 (1 => True, -- Defining_Identifier (Node1)
12139 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12140 3 => False, -- unused
12141 4 => False, -- Library_Unit (Node4-Sem)
12142 5 => False), -- Corresponding_Body (Node5-Sem)
12143
12144 N_Subunit =>
12145 (1 => True, -- Proper_Body (Node1)
12146 2 => True, -- Name (Node2)
12147 3 => False, -- Corresponding_Stub (Node3-Sem)
12148 4 => False, -- unused
12149 5 => False), -- unused
12150
12151 N_Exception_Declaration =>
12152 (1 => True, -- Defining_Identifier (Node1)
12153 2 => False, -- unused
12154 3 => False, -- Expression (Node3-Sem)
12155 4 => False, -- unused
12156 5 => False), -- unused
12157
12158 N_Handled_Sequence_Of_Statements =>
12159 (1 => True, -- At_End_Proc (Node1)
12160 2 => False, -- First_Real_Statement (Node2-Sem)
12161 3 => True, -- Statements (List3)
12162 4 => True, -- End_Label (Node4)
12163 5 => True), -- Exception_Handlers (List5)
12164
12165 N_Exception_Handler =>
12166 (1 => False, -- Local_Raise_Statements (Elist1)
12167 2 => True, -- Choice_Parameter (Node2)
12168 3 => True, -- Statements (List3)
12169 4 => True, -- Exception_Choices (List4)
12170 5 => False), -- Exception_Label (Node5)
12171
12172 N_Raise_Statement =>
12173 (1 => False, -- unused
12174 2 => True, -- Name (Node2)
12175 3 => True, -- Expression (Node3)
12176 4 => False, -- unused
12177 5 => False), -- unused
12178
12179 N_Raise_Expression =>
12180 (1 => False, -- unused
12181 2 => True, -- Name (Node2)
12182 3 => True, -- Expression (Node3)
12183 4 => False, -- unused
12184 5 => False), -- Etype (Node5-Sem)
12185
12186 N_Generic_Subprogram_Declaration =>
12187 (1 => True, -- Specification (Node1)
12188 2 => True, -- Generic_Formal_Declarations (List2)
12189 3 => False, -- unused
12190 4 => False, -- Parent_Spec (Node4-Sem)
12191 5 => False), -- Corresponding_Body (Node5-Sem)
12192
12193 N_Generic_Package_Declaration =>
12194 (1 => True, -- Specification (Node1)
12195 2 => True, -- Generic_Formal_Declarations (List2)
12196 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12197 4 => False, -- Parent_Spec (Node4-Sem)
12198 5 => False), -- Corresponding_Body (Node5-Sem)
12199
12200 N_Package_Instantiation =>
12201 (1 => True, -- Defining_Unit_Name (Node1)
12202 2 => True, -- Name (Node2)
12203 3 => True, -- Generic_Associations (List3)
12204 4 => False, -- Parent_Spec (Node4-Sem)
12205 5 => False), -- Instance_Spec (Node5-Sem)
12206
12207 N_Procedure_Instantiation =>
12208 (1 => True, -- Defining_Unit_Name (Node1)
12209 2 => True, -- Name (Node2)
12210 3 => True, -- Generic_Associations (List3)
12211 4 => False, -- Parent_Spec (Node4-Sem)
12212 5 => False), -- Instance_Spec (Node5-Sem)
12213
12214 N_Function_Instantiation =>
12215 (1 => True, -- Defining_Unit_Name (Node1)
12216 2 => True, -- Name (Node2)
12217 3 => True, -- Generic_Associations (List3)
12218 4 => False, -- Parent_Spec (Node4-Sem)
12219 5 => False), -- Instance_Spec (Node5-Sem)
12220
12221 N_Generic_Association =>
12222 (1 => True, -- Explicit_Generic_Actual_Parameter (Node1)
12223 2 => True, -- Selector_Name (Node2)
12224 3 => False, -- unused
12225 4 => False, -- unused
12226 5 => False), -- unused
12227
12228 N_Formal_Object_Declaration =>
12229 (1 => True, -- Defining_Identifier (Node1)
12230 2 => False, -- unused
12231 3 => True, -- Access_Definition (Node3)
12232 4 => True, -- Subtype_Mark (Node4)
12233 5 => True), -- Default_Expression (Node5)
12234
12235 N_Formal_Type_Declaration =>
12236 (1 => True, -- Defining_Identifier (Node1)
12237 2 => False, -- unused
12238 3 => True, -- Formal_Type_Definition (Node3)
12239 4 => True, -- Discriminant_Specifications (List4)
12240 5 => False), -- unused
12241
12242 N_Formal_Private_Type_Definition =>
12243 (1 => False, -- unused
12244 2 => False, -- unused
12245 3 => False, -- unused
12246 4 => False, -- unused
12247 5 => False), -- unused
12248
12249 N_Formal_Incomplete_Type_Definition =>
12250 (1 => False, -- unused
12251 2 => False, -- unused
12252 3 => False, -- unused
12253 4 => False, -- unused
12254 5 => False), -- unused
12255
12256 N_Formal_Derived_Type_Definition =>
12257 (1 => False, -- unused
12258 2 => True, -- Interface_List (List2)
12259 3 => False, -- unused
12260 4 => True, -- Subtype_Mark (Node4)
12261 5 => False), -- unused
12262
12263 N_Formal_Discrete_Type_Definition =>
12264 (1 => False, -- unused
12265 2 => False, -- unused
12266 3 => False, -- unused
12267 4 => False, -- unused
12268 5 => False), -- unused
12269
12270 N_Formal_Signed_Integer_Type_Definition =>
12271 (1 => False, -- unused
12272 2 => False, -- unused
12273 3 => False, -- unused
12274 4 => False, -- unused
12275 5 => False), -- unused
12276
12277 N_Formal_Modular_Type_Definition =>
12278 (1 => False, -- unused
12279 2 => False, -- unused
12280 3 => False, -- unused
12281 4 => False, -- unused
12282 5 => False), -- unused
12283
12284 N_Formal_Floating_Point_Definition =>
12285 (1 => False, -- unused
12286 2 => False, -- unused
12287 3 => False, -- unused
12288 4 => False, -- unused
12289 5 => False), -- unused
12290
12291 N_Formal_Ordinary_Fixed_Point_Definition =>
12292 (1 => False, -- unused
12293 2 => False, -- unused
12294 3 => False, -- unused
12295 4 => False, -- unused
12296 5 => False), -- unused
12297
12298 N_Formal_Decimal_Fixed_Point_Definition =>
12299 (1 => False, -- unused
12300 2 => False, -- unused
12301 3 => False, -- unused
12302 4 => False, -- unused
12303 5 => False), -- unused
12304
12305 N_Formal_Concrete_Subprogram_Declaration =>
12306 (1 => True, -- Specification (Node1)
12307 2 => True, -- Default_Name (Node2)
12308 3 => False, -- unused
12309 4 => False, -- unused
12310 5 => False), -- unused
12311
12312 N_Formal_Abstract_Subprogram_Declaration =>
12313 (1 => True, -- Specification (Node1)
12314 2 => True, -- Default_Name (Node2)
12315 3 => False, -- unused
12316 4 => False, -- unused
12317 5 => False), -- unused
12318
12319 N_Formal_Package_Declaration =>
12320 (1 => True, -- Defining_Identifier (Node1)
12321 2 => True, -- Name (Node2)
12322 3 => True, -- Generic_Associations (List3)
12323 4 => False, -- unused
12324 5 => False), -- Instance_Spec (Node5-Sem)
12325
12326 N_Attribute_Definition_Clause =>
12327 (1 => True, -- Chars (Name1)
12328 2 => True, -- Name (Node2)
12329 3 => True, -- Expression (Node3)
12330 4 => False, -- unused
12331 5 => False), -- Next_Rep_Item (Node5-Sem)
12332
12333 N_Aspect_Specification =>
12334 (1 => True, -- Identifier (Node1)
12335 2 => False, -- Aspect_Rep_Item (Node2-Sem)
12336 3 => True, -- Expression (Node3)
12337 4 => False, -- Entity (Node4-Sem)
12338 5 => False), -- Next_Rep_Item (Node5-Sem)
12339
12340 N_Enumeration_Representation_Clause =>
12341 (1 => True, -- Identifier (Node1)
12342 2 => False, -- unused
12343 3 => True, -- Array_Aggregate (Node3)
12344 4 => False, -- unused
12345 5 => False), -- Next_Rep_Item (Node5-Sem)
12346
12347 N_Record_Representation_Clause =>
12348 (1 => True, -- Identifier (Node1)
12349 2 => True, -- Mod_Clause (Node2)
12350 3 => True, -- Component_Clauses (List3)
12351 4 => False, -- unused
12352 5 => False), -- Next_Rep_Item (Node5-Sem)
12353
12354 N_Component_Clause =>
12355 (1 => True, -- Component_Name (Node1)
12356 2 => True, -- Position (Node2)
12357 3 => True, -- First_Bit (Node3)
12358 4 => True, -- Last_Bit (Node4)
12359 5 => False), -- unused
12360
12361 N_Code_Statement =>
12362 (1 => False, -- unused
12363 2 => False, -- unused
12364 3 => True, -- Expression (Node3)
12365 4 => False, -- unused
12366 5 => False), -- unused
12367
12368 N_Op_Rotate_Left =>
12369 (1 => True, -- Chars (Name1)
12370 2 => True, -- Left_Opnd (Node2)
12371 3 => True, -- Right_Opnd (Node3)
12372 4 => False, -- Entity (Node4-Sem)
12373 5 => False), -- Etype (Node5-Sem)
12374
12375 N_Op_Rotate_Right =>
12376 (1 => True, -- Chars (Name1)
12377 2 => True, -- Left_Opnd (Node2)
12378 3 => True, -- Right_Opnd (Node3)
12379 4 => False, -- Entity (Node4-Sem)
12380 5 => False), -- Etype (Node5-Sem)
12381
12382 N_Op_Shift_Left =>
12383 (1 => True, -- Chars (Name1)
12384 2 => True, -- Left_Opnd (Node2)
12385 3 => True, -- Right_Opnd (Node3)
12386 4 => False, -- Entity (Node4-Sem)
12387 5 => False), -- Etype (Node5-Sem)
12388
12389 N_Op_Shift_Right_Arithmetic =>
12390 (1 => True, -- Chars (Name1)
12391 2 => True, -- Left_Opnd (Node2)
12392 3 => True, -- Right_Opnd (Node3)
12393 4 => False, -- Entity (Node4-Sem)
12394 5 => False), -- Etype (Node5-Sem)
12395
12396 N_Op_Shift_Right =>
12397 (1 => True, -- Chars (Name1)
12398 2 => True, -- Left_Opnd (Node2)
12399 3 => True, -- Right_Opnd (Node3)
12400 4 => False, -- Entity (Node4-Sem)
12401 5 => False), -- Etype (Node5-Sem)
12402
12403 N_Delta_Constraint =>
12404 (1 => False, -- unused
12405 2 => False, -- unused
12406 3 => True, -- Delta_Expression (Node3)
12407 4 => True, -- Range_Constraint (Node4)
12408 5 => False), -- unused
12409
12410 N_At_Clause =>
12411 (1 => True, -- Identifier (Node1)
12412 2 => False, -- unused
12413 3 => True, -- Expression (Node3)
12414 4 => False, -- unused
12415 5 => False), -- unused
12416
12417 N_Mod_Clause =>
12418 (1 => False, -- unused
12419 2 => False, -- unused
12420 3 => True, -- Expression (Node3)
12421 4 => True, -- Pragmas_Before (List4)
12422 5 => False), -- unused
12423
12424 N_If_Expression =>
12425 (1 => True, -- Expressions (List1)
12426 2 => False, -- Then_Actions (List2-Sem)
12427 3 => False, -- Else_Actions (List3-Sem)
12428 4 => False, -- unused
12429 5 => False), -- Etype (Node5-Sem)
12430
12431 N_Compound_Statement =>
12432 (1 => True, -- Actions (List1)
12433 2 => False, -- unused
12434 3 => False, -- unused
12435 4 => False, -- unused
12436 5 => False), -- unused
12437
12438 N_Contract =>
12439 (1 => False, -- Pre_Post_Conditions (Node1-Sem)
12440 2 => False, -- Contract_Test_Cases (Node2-Sem)
12441 3 => False, -- Classifications (Node3-Sem)
12442 4 => False, -- unused
12443 5 => False), -- unused
12444
12445 N_Expanded_Name =>
12446 (1 => True, -- Chars (Name1)
12447 2 => True, -- Selector_Name (Node2)
12448 3 => True, -- Prefix (Node3)
12449 4 => False, -- Entity (Node4-Sem)
12450 5 => False), -- Etype (Node5-Sem)
12451
12452 N_Expression_With_Actions =>
12453 (1 => True, -- Actions (List1)
12454 2 => False, -- unused
12455 3 => True, -- Expression (Node3)
12456 4 => False, -- unused
12457 5 => False), -- unused
12458
12459 N_Free_Statement =>
12460 (1 => False, -- Storage_Pool (Node1-Sem)
12461 2 => False, -- Procedure_To_Call (Node2-Sem)
12462 3 => True, -- Expression (Node3)
12463 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
12464 5 => False), -- unused
12465
12466 N_Freeze_Entity =>
12467 (1 => True, -- Actions (List1)
12468 2 => False, -- Access_Types_To_Process (Elist2-Sem)
12469 3 => False, -- TSS_Elist (Elist3-Sem)
12470 4 => False, -- Entity (Node4-Sem)
12471 5 => False), -- First_Subtype_Link (Node5-Sem)
12472
12473 N_Freeze_Generic_Entity =>
12474 (1 => False, -- unused
12475 2 => False, -- unused
12476 3 => False, -- unused
12477 4 => False, -- Entity (Node4-Sem)
12478 5 => False), -- unused
12479
12480 N_Implicit_Label_Declaration =>
12481 (1 => True, -- Defining_Identifier (Node1)
12482 2 => False, -- Label_Construct (Node2-Sem)
12483 3 => False, -- unused
12484 4 => False, -- unused
12485 5 => False), -- unused
12486
12487 N_Itype_Reference =>
12488 (1 => False, -- Itype (Node1-Sem)
12489 2 => False, -- unused
12490 3 => False, -- unused
12491 4 => False, -- unused
12492 5 => False), -- unused
12493
12494 N_Raise_Constraint_Error =>
12495 (1 => True, -- Condition (Node1)
12496 2 => False, -- unused
12497 3 => True, -- Reason (Uint3)
12498 4 => False, -- unused
12499 5 => False), -- Etype (Node5-Sem)
12500
12501 N_Raise_Program_Error =>
12502 (1 => True, -- Condition (Node1)
12503 2 => False, -- unused
12504 3 => True, -- Reason (Uint3)
12505 4 => False, -- unused
12506 5 => False), -- Etype (Node5-Sem)
12507
12508 N_Raise_Storage_Error =>
12509 (1 => True, -- Condition (Node1)
12510 2 => False, -- unused
12511 3 => True, -- Reason (Uint3)
12512 4 => False, -- unused
12513 5 => False), -- Etype (Node5-Sem)
12514
12515 N_Push_Constraint_Error_Label =>
12516 (1 => False, -- unused
12517 2 => False, -- unused
12518 3 => False, -- unused
12519 4 => False, -- unused
12520 5 => False), -- unused
12521
12522 N_Push_Program_Error_Label =>
12523 (1 => False, -- Exception_Label
12524 2 => False, -- unused
12525 3 => False, -- unused
12526 4 => False, -- unused
12527 5 => False), -- Exception_Label
12528
12529 N_Push_Storage_Error_Label =>
12530 (1 => False, -- Exception_Label
12531 2 => False, -- unused
12532 3 => False, -- unused
12533 4 => False, -- unused
12534 5 => False), -- Exception_Label
12535
12536 N_Pop_Constraint_Error_Label =>
12537 (1 => False, -- unused
12538 2 => False, -- unused
12539 3 => False, -- unused
12540 4 => False, -- unused
12541 5 => False), -- unused
12542
12543 N_Pop_Program_Error_Label =>
12544 (1 => False, -- unused
12545 2 => False, -- unused
12546 3 => False, -- unused
12547 4 => False, -- unused
12548 5 => False), -- unused
12549
12550 N_Pop_Storage_Error_Label =>
12551 (1 => False, -- unused
12552 2 => False, -- unused
12553 3 => False, -- unused
12554 4 => False, -- unused
12555 5 => False), -- unused
12556
12557 N_Reference =>
12558 (1 => False, -- unused
12559 2 => False, -- unused
12560 3 => True, -- Prefix (Node3)
12561 4 => False, -- unused
12562 5 => False), -- Etype (Node5-Sem)
12563
12564 N_Unchecked_Expression =>
12565 (1 => False, -- unused
12566 2 => False, -- unused
12567 3 => True, -- Expression (Node3)
12568 4 => False, -- unused
12569 5 => False), -- Etype (Node5-Sem)
12570
12571 N_Unchecked_Type_Conversion =>
12572 (1 => False, -- unused
12573 2 => False, -- unused
12574 3 => True, -- Expression (Node3)
12575 4 => True, -- Subtype_Mark (Node4)
12576 5 => False), -- Etype (Node5-Sem)
12577
12578 N_Validate_Unchecked_Conversion =>
12579 (1 => False, -- Source_Type (Node1-Sem)
12580 2 => False, -- Target_Type (Node2-Sem)
12581 3 => False, -- unused
12582 4 => False, -- unused
12583 5 => False), -- unused
12584
12585 -- Entries for SCIL nodes
12586
12587 N_SCIL_Dispatch_Table_Tag_Init =>
12588 (1 => False, -- unused
12589 2 => False, -- unused
12590 3 => False, -- unused
12591 4 => False, -- SCIL_Entity (Node4-Sem)
12592 5 => False), -- unused
12593
12594 N_SCIL_Dispatching_Call =>
12595 (1 => False, -- unused
12596 2 => False, -- SCIL_Target_Prim (Node2-Sem)
12597 3 => False, -- unused
12598 4 => False, -- SCIL_Entity (Node4-Sem)
12599 5 => False), -- SCIL_Controlling_Tag (Node5-Sem)
12600
12601 N_SCIL_Membership_Test =>
12602 (1 => False, -- unused
12603 2 => False, -- unused
12604 3 => False, -- unused
12605 4 => False, -- SCIL_Entity (Node4-Sem)
12606 5 => False), -- SCIL_Tag_Value (Node5-Sem)
12607
12608 -- Entries for Empty, Error and Unused. Even thought these have a Chars
12609 -- field for debugging purposes, they are not really syntactic fields, so
12610 -- we mark all fields as unused.
12611
12612 N_Empty =>
12613 (1 => False, -- unused
12614 2 => False, -- unused
12615 3 => False, -- unused
12616 4 => False, -- unused
12617 5 => False), -- unused
12618
12619 N_Error =>
12620 (1 => False, -- unused
12621 2 => False, -- unused
12622 3 => False, -- unused
12623 4 => False, -- unused
12624 5 => False), -- unused
12625
12626 N_Unused_At_Start =>
12627 (1 => False, -- unused
12628 2 => False, -- unused
12629 3 => False, -- unused
12630 4 => False, -- unused
12631 5 => False), -- unused
12632
12633 N_Unused_At_End =>
12634 (1 => False, -- unused
12635 2 => False, -- unused
12636 3 => False, -- unused
12637 4 => False, -- unused
12638 5 => False)); -- unused
12639
12640 --------------------
12641 -- Inline Pragmas --
12642 --------------------
12643
12644 pragma Inline (ABE_Is_Certain);
12645 pragma Inline (Abort_Present);
12646 pragma Inline (Abortable_Part);
12647 pragma Inline (Abstract_Present);
12648 pragma Inline (Accept_Handler_Records);
12649 pragma Inline (Accept_Statement);
12650 pragma Inline (Access_Definition);
12651 pragma Inline (Access_To_Subprogram_Definition);
12652 pragma Inline (Access_Types_To_Process);
12653 pragma Inline (Actions);
12654 pragma Inline (Activation_Chain_Entity);
12655 pragma Inline (Acts_As_Spec);
12656 pragma Inline (Actual_Designated_Subtype);
12657 pragma Inline (Address_Warning_Posted);
12658 pragma Inline (Aggregate_Bounds);
12659 pragma Inline (Aliased_Present);
12660 pragma Inline (All_Others);
12661 pragma Inline (All_Present);
12662 pragma Inline (Alternatives);
12663 pragma Inline (Ancestor_Part);
12664 pragma Inline (Atomic_Sync_Required);
12665 pragma Inline (Array_Aggregate);
12666 pragma Inline (Aspect_Rep_Item);
12667 pragma Inline (Assignment_OK);
12668 pragma Inline (Associated_Node);
12669 pragma Inline (At_End_Proc);
12670 pragma Inline (Attribute_Name);
12671 pragma Inline (Aux_Decls_Node);
12672 pragma Inline (Backwards_OK);
12673 pragma Inline (Bad_Is_Detected);
12674 pragma Inline (Body_To_Inline);
12675 pragma Inline (Body_Required);
12676 pragma Inline (By_Ref);
12677 pragma Inline (Box_Present);
12678 pragma Inline (Char_Literal_Value);
12679 pragma Inline (Chars);
12680 pragma Inline (Check_Address_Alignment);
12681 pragma Inline (Choice_Parameter);
12682 pragma Inline (Choices);
12683 pragma Inline (Class_Present);
12684 pragma Inline (Classifications);
12685 pragma Inline (Cleanup_Actions);
12686 pragma Inline (Comes_From_Extended_Return_Statement);
12687 pragma Inline (Compile_Time_Known_Aggregate);
12688 pragma Inline (Component_Associations);
12689 pragma Inline (Component_Clauses);
12690 pragma Inline (Component_Definition);
12691 pragma Inline (Component_Items);
12692 pragma Inline (Component_List);
12693 pragma Inline (Component_Name);
12694 pragma Inline (Componentwise_Assignment);
12695 pragma Inline (Condition);
12696 pragma Inline (Condition_Actions);
12697 pragma Inline (Config_Pragmas);
12698 pragma Inline (Constant_Present);
12699 pragma Inline (Constraint);
12700 pragma Inline (Constraints);
12701 pragma Inline (Context_Installed);
12702 pragma Inline (Context_Items);
12703 pragma Inline (Context_Pending);
12704 pragma Inline (Contract_Test_Cases);
12705 pragma Inline (Controlling_Argument);
12706 pragma Inline (Convert_To_Return_False);
12707 pragma Inline (Conversion_OK);
12708 pragma Inline (Corresponding_Aspect);
12709 pragma Inline (Corresponding_Body);
12710 pragma Inline (Corresponding_Formal_Spec);
12711 pragma Inline (Corresponding_Generic_Association);
12712 pragma Inline (Corresponding_Integer_Value);
12713 pragma Inline (Corresponding_Spec);
12714 pragma Inline (Corresponding_Spec_Of_Stub);
12715 pragma Inline (Corresponding_Stub);
12716 pragma Inline (Dcheck_Function);
12717 pragma Inline (Declarations);
12718 pragma Inline (Default_Expression);
12719 pragma Inline (Default_Storage_Pool);
12720 pragma Inline (Default_Name);
12721 pragma Inline (Defining_Identifier);
12722 pragma Inline (Defining_Unit_Name);
12723 pragma Inline (Delay_Alternative);
12724 pragma Inline (Delay_Statement);
12725 pragma Inline (Delta_Expression);
12726 pragma Inline (Digits_Expression);
12727 pragma Inline (Discr_Check_Funcs_Built);
12728 pragma Inline (Discrete_Choices);
12729 pragma Inline (Discrete_Range);
12730 pragma Inline (Discrete_Subtype_Definition);
12731 pragma Inline (Discrete_Subtype_Definitions);
12732 pragma Inline (Discriminant_Specifications);
12733 pragma Inline (Discriminant_Type);
12734 pragma Inline (Do_Accessibility_Check);
12735 pragma Inline (Do_Discriminant_Check);
12736 pragma Inline (Do_Length_Check);
12737 pragma Inline (Do_Division_Check);
12738 pragma Inline (Do_Overflow_Check);
12739 pragma Inline (Do_Range_Check);
12740 pragma Inline (Do_Storage_Check);
12741 pragma Inline (Do_Tag_Check);
12742 pragma Inline (Elaborate_Present);
12743 pragma Inline (Elaborate_All_Desirable);
12744 pragma Inline (Elaborate_All_Present);
12745 pragma Inline (Elaborate_Desirable);
12746 pragma Inline (Else_Actions);
12747 pragma Inline (Else_Statements);
12748 pragma Inline (Elsif_Parts);
12749 pragma Inline (Enclosing_Variant);
12750 pragma Inline (End_Label);
12751 pragma Inline (End_Span);
12752 pragma Inline (Entity);
12753 pragma Inline (Entity_Or_Associated_Node);
12754 pragma Inline (Entry_Body_Formal_Part);
12755 pragma Inline (Entry_Call_Alternative);
12756 pragma Inline (Entry_Call_Statement);
12757 pragma Inline (Entry_Direct_Name);
12758 pragma Inline (Entry_Index);
12759 pragma Inline (Entry_Index_Specification);
12760 pragma Inline (Etype);
12761 pragma Inline (Exception_Choices);
12762 pragma Inline (Exception_Handlers);
12763 pragma Inline (Exception_Junk);
12764 pragma Inline (Exception_Label);
12765 pragma Inline (Expansion_Delayed);
12766 pragma Inline (Explicit_Actual_Parameter);
12767 pragma Inline (Explicit_Generic_Actual_Parameter);
12768 pragma Inline (Expression);
12769 pragma Inline (Expressions);
12770 pragma Inline (First_Bit);
12771 pragma Inline (First_Inlined_Subprogram);
12772 pragma Inline (First_Name);
12773 pragma Inline (First_Named_Actual);
12774 pragma Inline (First_Real_Statement);
12775 pragma Inline (First_Subtype_Link);
12776 pragma Inline (Float_Truncate);
12777 pragma Inline (Formal_Type_Definition);
12778 pragma Inline (Forwards_OK);
12779 pragma Inline (From_Aspect_Specification);
12780 pragma Inline (From_At_End);
12781 pragma Inline (From_At_Mod);
12782 pragma Inline (From_Conditional_Expression);
12783 pragma Inline (From_Default);
12784 pragma Inline (Generalized_Indexing);
12785 pragma Inline (Generic_Associations);
12786 pragma Inline (Generic_Formal_Declarations);
12787 pragma Inline (Generic_Parent);
12788 pragma Inline (Generic_Parent_Type);
12789 pragma Inline (Handled_Statement_Sequence);
12790 pragma Inline (Handler_List_Entry);
12791 pragma Inline (Has_Created_Identifier);
12792 pragma Inline (Has_Dereference_Action);
12793 pragma Inline (Has_Dynamic_Length_Check);
12794 pragma Inline (Has_Dynamic_Range_Check);
12795 pragma Inline (Has_Init_Expression);
12796 pragma Inline (Has_Local_Raise);
12797 pragma Inline (Has_Self_Reference);
12798 pragma Inline (Has_SP_Choice);
12799 pragma Inline (Has_No_Elaboration_Code);
12800 pragma Inline (Has_Pragma_Suppress_All);
12801 pragma Inline (Has_Private_View);
12802 pragma Inline (Has_Relative_Deadline_Pragma);
12803 pragma Inline (Has_Storage_Size_Pragma);
12804 pragma Inline (Has_Wide_Character);
12805 pragma Inline (Has_Wide_Wide_Character);
12806 pragma Inline (Header_Size_Added);
12807 pragma Inline (Hidden_By_Use_Clause);
12808 pragma Inline (High_Bound);
12809 pragma Inline (Identifier);
12810 pragma Inline (Implicit_With);
12811 pragma Inline (Implicit_With_From_Instantiation);
12812 pragma Inline (Interface_List);
12813 pragma Inline (Interface_Present);
12814 pragma Inline (Includes_Infinities);
12815 pragma Inline (Import_Interface_Present);
12816 pragma Inline (In_Present);
12817 pragma Inline (Incomplete_View);
12818 pragma Inline (Inherited_Discriminant);
12819 pragma Inline (Instance_Spec);
12820 pragma Inline (Intval);
12821 pragma Inline (Iterator_Specification);
12822 pragma Inline (Is_Accessibility_Actual);
12823 pragma Inline (Is_Analyzed_Pragma);
12824 pragma Inline (Is_Asynchronous_Call_Block);
12825 pragma Inline (Is_Boolean_Aspect);
12826 pragma Inline (Is_Checked);
12827 pragma Inline (Is_Component_Left_Opnd);
12828 pragma Inline (Is_Component_Right_Opnd);
12829 pragma Inline (Is_Controlling_Actual);
12830 pragma Inline (Is_Delayed_Aspect);
12831 pragma Inline (Is_Disabled);
12832 pragma Inline (Is_Dynamic_Coextension);
12833 pragma Inline (Is_Elsif);
12834 pragma Inline (Is_Entry_Barrier_Function);
12835 pragma Inline (Is_Expanded_Build_In_Place_Call);
12836 pragma Inline (Is_Expanded_Contract);
12837 pragma Inline (Is_Finalization_Wrapper);
12838 pragma Inline (Is_Folded_In_Parser);
12839 pragma Inline (Is_Generic_Contract_Pragma);
12840 pragma Inline (Is_Ghost_Pragma);
12841 pragma Inline (Is_Ignored);
12842 pragma Inline (Is_In_Discriminant_Check);
12843 pragma Inline (Is_Inherited_Pragma);
12844 pragma Inline (Is_Machine_Number);
12845 pragma Inline (Is_Null_Loop);
12846 pragma Inline (Is_Overloaded);
12847 pragma Inline (Is_Power_Of_2_For_Shift);
12848 pragma Inline (Is_Prefixed_Call);
12849 pragma Inline (Is_Protected_Subprogram_Body);
12850 pragma Inline (Is_Qualified_Universal_Literal);
12851 pragma Inline (Is_Static_Coextension);
12852 pragma Inline (Is_Static_Expression);
12853 pragma Inline (Is_Subprogram_Descriptor);
12854 pragma Inline (Is_Task_Allocation_Block);
12855 pragma Inline (Is_Task_Body_Procedure);
12856 pragma Inline (Is_Task_Master);
12857 pragma Inline (Iteration_Scheme);
12858 pragma Inline (Itype);
12859 pragma Inline (Kill_Range_Check);
12860 pragma Inline (Last_Bit);
12861 pragma Inline (Last_Name);
12862 pragma Inline (Library_Unit);
12863 pragma Inline (Label_Construct);
12864 pragma Inline (Left_Opnd);
12865 pragma Inline (Limited_View_Installed);
12866 pragma Inline (Limited_Present);
12867 pragma Inline (Literals);
12868 pragma Inline (Local_Raise_Not_OK);
12869 pragma Inline (Local_Raise_Statements);
12870 pragma Inline (Loop_Actions);
12871 pragma Inline (Loop_Parameter_Specification);
12872 pragma Inline (Low_Bound);
12873 pragma Inline (Mod_Clause);
12874 pragma Inline (More_Ids);
12875 pragma Inline (Must_Be_Byte_Aligned);
12876 pragma Inline (Must_Not_Freeze);
12877 pragma Inline (Must_Not_Override);
12878 pragma Inline (Must_Override);
12879 pragma Inline (Name);
12880 pragma Inline (Names);
12881 pragma Inline (Next_Entity);
12882 pragma Inline (Next_Exit_Statement);
12883 pragma Inline (Next_Implicit_With);
12884 pragma Inline (Next_Named_Actual);
12885 pragma Inline (Next_Pragma);
12886 pragma Inline (Next_Rep_Item);
12887 pragma Inline (Next_Use_Clause);
12888 pragma Inline (No_Ctrl_Actions);
12889 pragma Inline (No_Elaboration_Check);
12890 pragma Inline (No_Entities_Ref_In_Spec);
12891 pragma Inline (No_Initialization);
12892 pragma Inline (No_Minimize_Eliminate);
12893 pragma Inline (No_Side_Effect_Removal);
12894 pragma Inline (No_Truncation);
12895 pragma Inline (Non_Aliased_Prefix);
12896 pragma Inline (Null_Present);
12897 pragma Inline (Null_Excluding_Subtype);
12898 pragma Inline (Null_Exclusion_Present);
12899 pragma Inline (Null_Exclusion_In_Return_Present);
12900 pragma Inline (Null_Record_Present);
12901 pragma Inline (Object_Definition);
12902 pragma Inline (Of_Present);
12903 pragma Inline (Original_Discriminant);
12904 pragma Inline (Original_Entity);
12905 pragma Inline (Others_Discrete_Choices);
12906 pragma Inline (Out_Present);
12907 pragma Inline (Parameter_Associations);
12908 pragma Inline (Parameter_Specifications);
12909 pragma Inline (Parameter_Type);
12910 pragma Inline (Parent_Spec);
12911 pragma Inline (Position);
12912 pragma Inline (Pragma_Argument_Associations);
12913 pragma Inline (Pragma_Identifier);
12914 pragma Inline (Pragmas_After);
12915 pragma Inline (Pragmas_Before);
12916 pragma Inline (Pre_Post_Conditions);
12917 pragma Inline (Prefix);
12918 pragma Inline (Premature_Use);
12919 pragma Inline (Present_Expr);
12920 pragma Inline (Prev_Ids);
12921 pragma Inline (Print_In_Hex);
12922 pragma Inline (Private_Declarations);
12923 pragma Inline (Private_Present);
12924 pragma Inline (Procedure_To_Call);
12925 pragma Inline (Proper_Body);
12926 pragma Inline (Protected_Definition);
12927 pragma Inline (Protected_Present);
12928 pragma Inline (Raises_Constraint_Error);
12929 pragma Inline (Range_Constraint);
12930 pragma Inline (Range_Expression);
12931 pragma Inline (Real_Range_Specification);
12932 pragma Inline (Realval);
12933 pragma Inline (Reason);
12934 pragma Inline (Record_Extension_Part);
12935 pragma Inline (Redundant_Use);
12936 pragma Inline (Renaming_Exception);
12937 pragma Inline (Result_Definition);
12938 pragma Inline (Return_Object_Declarations);
12939 pragma Inline (Return_Statement_Entity);
12940 pragma Inline (Reverse_Present);
12941 pragma Inline (Right_Opnd);
12942 pragma Inline (Rounded_Result);
12943 pragma Inline (SCIL_Controlling_Tag);
12944 pragma Inline (SCIL_Entity);
12945 pragma Inline (SCIL_Tag_Value);
12946 pragma Inline (SCIL_Target_Prim);
12947 pragma Inline (Scope);
12948 pragma Inline (Select_Alternatives);
12949 pragma Inline (Selector_Name);
12950 pragma Inline (Selector_Names);
12951 pragma Inline (Shift_Count_OK);
12952 pragma Inline (Source_Type);
12953 pragma Inline (Specification);
12954 pragma Inline (Split_PPC);
12955 pragma Inline (Statements);
12956 pragma Inline (Storage_Pool);
12957 pragma Inline (Subpool_Handle_Name);
12958 pragma Inline (Strval);
12959 pragma Inline (Subtype_Indication);
12960 pragma Inline (Subtype_Mark);
12961 pragma Inline (Subtype_Marks);
12962 pragma Inline (Suppress_Assignment_Checks);
12963 pragma Inline (Suppress_Loop_Warnings);
12964 pragma Inline (Synchronized_Present);
12965 pragma Inline (Tagged_Present);
12966 pragma Inline (Target_Type);
12967 pragma Inline (Task_Definition);
12968 pragma Inline (Task_Present);
12969 pragma Inline (Then_Actions);
12970 pragma Inline (Then_Statements);
12971 pragma Inline (Triggering_Alternative);
12972 pragma Inline (Triggering_Statement);
12973 pragma Inline (Treat_Fixed_As_Integer);
12974 pragma Inline (TSS_Elist);
12975 pragma Inline (Type_Definition);
12976 pragma Inline (Uneval_Old_Accept);
12977 pragma Inline (Uneval_Old_Warn);
12978 pragma Inline (Unit);
12979 pragma Inline (Uninitialized_Variable);
12980 pragma Inline (Unknown_Discriminants_Present);
12981 pragma Inline (Unreferenced_In_Spec);
12982 pragma Inline (Variant_Part);
12983 pragma Inline (Variants);
12984 pragma Inline (Visible_Declarations);
12985 pragma Inline (Used_Operations);
12986 pragma Inline (Was_Expression_Function);
12987 pragma Inline (Was_Originally_Stub);
12988 pragma Inline (Withed_Body);
12989
12990 pragma Inline (Set_ABE_Is_Certain);
12991 pragma Inline (Set_Abort_Present);
12992 pragma Inline (Set_Abortable_Part);
12993 pragma Inline (Set_Abstract_Present);
12994 pragma Inline (Set_Accept_Handler_Records);
12995 pragma Inline (Set_Accept_Statement);
12996 pragma Inline (Set_Access_Definition);
12997 pragma Inline (Set_Access_To_Subprogram_Definition);
12998 pragma Inline (Set_Access_Types_To_Process);
12999 pragma Inline (Set_Actions);
13000 pragma Inline (Set_Activation_Chain_Entity);
13001 pragma Inline (Set_Acts_As_Spec);
13002 pragma Inline (Set_Actual_Designated_Subtype);
13003 pragma Inline (Set_Address_Warning_Posted);
13004 pragma Inline (Set_Aggregate_Bounds);
13005 pragma Inline (Set_Aliased_Present);
13006 pragma Inline (Set_All_Others);
13007 pragma Inline (Set_All_Present);
13008 pragma Inline (Set_Alternatives);
13009 pragma Inline (Set_Ancestor_Part);
13010 pragma Inline (Set_Array_Aggregate);
13011 pragma Inline (Set_Aspect_Rep_Item);
13012 pragma Inline (Set_Assignment_OK);
13013 pragma Inline (Set_Associated_Node);
13014 pragma Inline (Set_At_End_Proc);
13015 pragma Inline (Set_Atomic_Sync_Required);
13016 pragma Inline (Set_Attribute_Name);
13017 pragma Inline (Set_Aux_Decls_Node);
13018 pragma Inline (Set_Backwards_OK);
13019 pragma Inline (Set_Bad_Is_Detected);
13020 pragma Inline (Set_Body_Required);
13021 pragma Inline (Set_Body_To_Inline);
13022 pragma Inline (Set_Box_Present);
13023 pragma Inline (Set_By_Ref);
13024 pragma Inline (Set_Char_Literal_Value);
13025 pragma Inline (Set_Chars);
13026 pragma Inline (Set_Check_Address_Alignment);
13027 pragma Inline (Set_Choice_Parameter);
13028 pragma Inline (Set_Choices);
13029 pragma Inline (Set_Class_Present);
13030 pragma Inline (Set_Classifications);
13031 pragma Inline (Set_Cleanup_Actions);
13032 pragma Inline (Set_Comes_From_Extended_Return_Statement);
13033 pragma Inline (Set_Compile_Time_Known_Aggregate);
13034 pragma Inline (Set_Component_Associations);
13035 pragma Inline (Set_Component_Clauses);
13036 pragma Inline (Set_Component_Definition);
13037 pragma Inline (Set_Component_Items);
13038 pragma Inline (Set_Component_List);
13039 pragma Inline (Set_Component_Name);
13040 pragma Inline (Set_Componentwise_Assignment);
13041 pragma Inline (Set_Condition);
13042 pragma Inline (Set_Condition_Actions);
13043 pragma Inline (Set_Config_Pragmas);
13044 pragma Inline (Set_Constant_Present);
13045 pragma Inline (Set_Constraint);
13046 pragma Inline (Set_Constraints);
13047 pragma Inline (Set_Context_Installed);
13048 pragma Inline (Set_Context_Items);
13049 pragma Inline (Set_Context_Pending);
13050 pragma Inline (Set_Contract_Test_Cases);
13051 pragma Inline (Set_Controlling_Argument);
13052 pragma Inline (Set_Conversion_OK);
13053 pragma Inline (Set_Convert_To_Return_False);
13054 pragma Inline (Set_Corresponding_Aspect);
13055 pragma Inline (Set_Corresponding_Body);
13056 pragma Inline (Set_Corresponding_Formal_Spec);
13057 pragma Inline (Set_Corresponding_Generic_Association);
13058 pragma Inline (Set_Corresponding_Integer_Value);
13059 pragma Inline (Set_Corresponding_Spec);
13060 pragma Inline (Set_Corresponding_Spec_Of_Stub);
13061 pragma Inline (Set_Corresponding_Stub);
13062 pragma Inline (Set_Dcheck_Function);
13063 pragma Inline (Set_Declarations);
13064 pragma Inline (Set_Default_Expression);
13065 pragma Inline (Set_Default_Name);
13066 pragma Inline (Set_Default_Storage_Pool);
13067 pragma Inline (Set_Defining_Identifier);
13068 pragma Inline (Set_Defining_Unit_Name);
13069 pragma Inline (Set_Delay_Alternative);
13070 pragma Inline (Set_Delay_Statement);
13071 pragma Inline (Set_Delta_Expression);
13072 pragma Inline (Set_Digits_Expression);
13073 pragma Inline (Set_Discr_Check_Funcs_Built);
13074 pragma Inline (Set_Discrete_Choices);
13075 pragma Inline (Set_Discrete_Range);
13076 pragma Inline (Set_Discrete_Subtype_Definition);
13077 pragma Inline (Set_Discrete_Subtype_Definitions);
13078 pragma Inline (Set_Discriminant_Specifications);
13079 pragma Inline (Set_Discriminant_Type);
13080 pragma Inline (Set_Do_Accessibility_Check);
13081 pragma Inline (Set_Do_Discriminant_Check);
13082 pragma Inline (Set_Do_Division_Check);
13083 pragma Inline (Set_Do_Length_Check);
13084 pragma Inline (Set_Do_Overflow_Check);
13085 pragma Inline (Set_Do_Range_Check);
13086 pragma Inline (Set_Do_Storage_Check);
13087 pragma Inline (Set_Do_Tag_Check);
13088 pragma Inline (Set_Elaborate_All_Desirable);
13089 pragma Inline (Set_Elaborate_All_Present);
13090 pragma Inline (Set_Elaborate_Desirable);
13091 pragma Inline (Set_Elaborate_Present);
13092 pragma Inline (Set_Else_Actions);
13093 pragma Inline (Set_Else_Statements);
13094 pragma Inline (Set_Elsif_Parts);
13095 pragma Inline (Set_Enclosing_Variant);
13096 pragma Inline (Set_End_Label);
13097 pragma Inline (Set_End_Span);
13098 pragma Inline (Set_Entity);
13099 pragma Inline (Set_Entry_Body_Formal_Part);
13100 pragma Inline (Set_Entry_Call_Alternative);
13101 pragma Inline (Set_Entry_Call_Statement);
13102 pragma Inline (Set_Entry_Direct_Name);
13103 pragma Inline (Set_Entry_Index);
13104 pragma Inline (Set_Entry_Index_Specification);
13105 pragma Inline (Set_Etype);
13106 pragma Inline (Set_Exception_Choices);
13107 pragma Inline (Set_Exception_Handlers);
13108 pragma Inline (Set_Exception_Junk);
13109 pragma Inline (Set_Exception_Label);
13110 pragma Inline (Set_Expansion_Delayed);
13111 pragma Inline (Set_Explicit_Actual_Parameter);
13112 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
13113 pragma Inline (Set_Expression);
13114 pragma Inline (Set_Expressions);
13115 pragma Inline (Set_First_Bit);
13116 pragma Inline (Set_First_Inlined_Subprogram);
13117 pragma Inline (Set_First_Name);
13118 pragma Inline (Set_First_Named_Actual);
13119 pragma Inline (Set_First_Real_Statement);
13120 pragma Inline (Set_First_Subtype_Link);
13121 pragma Inline (Set_Float_Truncate);
13122 pragma Inline (Set_Formal_Type_Definition);
13123 pragma Inline (Set_Forwards_OK);
13124 pragma Inline (Set_From_Aspect_Specification);
13125 pragma Inline (Set_From_At_End);
13126 pragma Inline (Set_From_At_Mod);
13127 pragma Inline (Set_From_Conditional_Expression);
13128 pragma Inline (Set_From_Default);
13129 pragma Inline (Set_Generalized_Indexing);
13130 pragma Inline (Set_Generic_Associations);
13131 pragma Inline (Set_Generic_Formal_Declarations);
13132 pragma Inline (Set_Generic_Parent);
13133 pragma Inline (Set_Generic_Parent_Type);
13134 pragma Inline (Set_Handled_Statement_Sequence);
13135 pragma Inline (Set_Handler_List_Entry);
13136 pragma Inline (Set_Has_Created_Identifier);
13137 pragma Inline (Set_Has_Dereference_Action);
13138 pragma Inline (Set_Has_Dynamic_Length_Check);
13139 pragma Inline (Set_Has_Dynamic_Range_Check);
13140 pragma Inline (Set_Has_Init_Expression);
13141 pragma Inline (Set_Has_Local_Raise);
13142 pragma Inline (Set_Has_No_Elaboration_Code);
13143 pragma Inline (Set_Has_Pragma_Suppress_All);
13144 pragma Inline (Set_Has_Private_View);
13145 pragma Inline (Set_Has_Relative_Deadline_Pragma);
13146 pragma Inline (Set_Has_Self_Reference);
13147 pragma Inline (Set_Has_SP_Choice);
13148 pragma Inline (Set_Has_Storage_Size_Pragma);
13149 pragma Inline (Set_Has_Wide_Character);
13150 pragma Inline (Set_Has_Wide_Wide_Character);
13151 pragma Inline (Set_Header_Size_Added);
13152 pragma Inline (Set_Hidden_By_Use_Clause);
13153 pragma Inline (Set_High_Bound);
13154 pragma Inline (Set_Identifier);
13155 pragma Inline (Set_Implicit_With);
13156 pragma Inline (Set_Import_Interface_Present);
13157 pragma Inline (Set_In_Present);
13158 pragma Inline (Set_Includes_Infinities);
13159 pragma Inline (Set_Incomplete_View);
13160 pragma Inline (Set_Inherited_Discriminant);
13161 pragma Inline (Set_Instance_Spec);
13162 pragma Inline (Set_Interface_List);
13163 pragma Inline (Set_Interface_Present);
13164 pragma Inline (Set_Intval);
13165 pragma Inline (Set_Is_Accessibility_Actual);
13166 pragma Inline (Set_Is_Analyzed_Pragma);
13167 pragma Inline (Set_Is_Asynchronous_Call_Block);
13168 pragma Inline (Set_Is_Boolean_Aspect);
13169 pragma Inline (Set_Is_Checked);
13170 pragma Inline (Set_Is_Component_Left_Opnd);
13171 pragma Inline (Set_Is_Component_Right_Opnd);
13172 pragma Inline (Set_Is_Controlling_Actual);
13173 pragma Inline (Set_Is_Delayed_Aspect);
13174 pragma Inline (Set_Is_Disabled);
13175 pragma Inline (Set_Is_Dynamic_Coextension);
13176 pragma Inline (Set_Is_Elsif);
13177 pragma Inline (Set_Is_Entry_Barrier_Function);
13178 pragma Inline (Set_Is_Expanded_Build_In_Place_Call);
13179 pragma Inline (Set_Is_Expanded_Contract);
13180 pragma Inline (Set_Is_Finalization_Wrapper);
13181 pragma Inline (Set_Is_Folded_In_Parser);
13182 pragma Inline (Set_Is_Generic_Contract_Pragma);
13183 pragma Inline (Set_Is_Ghost_Pragma);
13184 pragma Inline (Set_Is_Ignored);
13185 pragma Inline (Set_Is_In_Discriminant_Check);
13186 pragma Inline (Set_Is_Inherited_Pragma);
13187 pragma Inline (Set_Is_Machine_Number);
13188 pragma Inline (Set_Is_Null_Loop);
13189 pragma Inline (Set_Is_Overloaded);
13190 pragma Inline (Set_Is_Power_Of_2_For_Shift);
13191 pragma Inline (Set_Is_Prefixed_Call);
13192 pragma Inline (Set_Is_Protected_Subprogram_Body);
13193 pragma Inline (Set_Is_Qualified_Universal_Literal);
13194 pragma Inline (Set_Is_Static_Coextension);
13195 pragma Inline (Set_Is_Static_Expression);
13196 pragma Inline (Set_Is_Subprogram_Descriptor);
13197 pragma Inline (Set_Is_Task_Allocation_Block);
13198 pragma Inline (Set_Is_Task_Body_Procedure);
13199 pragma Inline (Set_Is_Task_Master);
13200 pragma Inline (Set_Iteration_Scheme);
13201 pragma Inline (Set_Iterator_Specification);
13202 pragma Inline (Set_Itype);
13203 pragma Inline (Set_Kill_Range_Check);
13204 pragma Inline (Set_Label_Construct);
13205 pragma Inline (Set_Last_Bit);
13206 pragma Inline (Set_Last_Name);
13207 pragma Inline (Set_Left_Opnd);
13208 pragma Inline (Set_Library_Unit);
13209 pragma Inline (Set_Limited_Present);
13210 pragma Inline (Set_Limited_View_Installed);
13211 pragma Inline (Set_Literals);
13212 pragma Inline (Set_Local_Raise_Not_OK);
13213 pragma Inline (Set_Local_Raise_Statements);
13214 pragma Inline (Set_Loop_Actions);
13215 pragma Inline (Set_Loop_Parameter_Specification);
13216 pragma Inline (Set_Low_Bound);
13217 pragma Inline (Set_Mod_Clause);
13218 pragma Inline (Set_More_Ids);
13219 pragma Inline (Set_Must_Be_Byte_Aligned);
13220 pragma Inline (Set_Must_Not_Freeze);
13221 pragma Inline (Set_Must_Not_Override);
13222 pragma Inline (Set_Must_Override);
13223 pragma Inline (Set_Name);
13224 pragma Inline (Set_Names);
13225 pragma Inline (Set_Next_Entity);
13226 pragma Inline (Set_Next_Exit_Statement);
13227 pragma Inline (Set_Next_Implicit_With);
13228 pragma Inline (Set_Next_Named_Actual);
13229 pragma Inline (Set_Next_Pragma);
13230 pragma Inline (Set_Next_Rep_Item);
13231 pragma Inline (Set_Next_Use_Clause);
13232 pragma Inline (Set_No_Ctrl_Actions);
13233 pragma Inline (Set_No_Elaboration_Check);
13234 pragma Inline (Set_No_Entities_Ref_In_Spec);
13235 pragma Inline (Set_No_Initialization);
13236 pragma Inline (Set_No_Minimize_Eliminate);
13237 pragma Inline (Set_No_Side_Effect_Removal);
13238 pragma Inline (Set_No_Truncation);
13239 pragma Inline (Set_Non_Aliased_Prefix);
13240 pragma Inline (Set_Null_Excluding_Subtype);
13241 pragma Inline (Set_Null_Exclusion_Present);
13242 pragma Inline (Set_Null_Exclusion_In_Return_Present);
13243 pragma Inline (Set_Null_Present);
13244 pragma Inline (Set_Null_Record_Present);
13245 pragma Inline (Set_Object_Definition);
13246 pragma Inline (Set_Of_Present);
13247 pragma Inline (Set_Original_Discriminant);
13248 pragma Inline (Set_Original_Entity);
13249 pragma Inline (Set_Others_Discrete_Choices);
13250 pragma Inline (Set_Out_Present);
13251 pragma Inline (Set_Parameter_Associations);
13252 pragma Inline (Set_Parameter_Specifications);
13253 pragma Inline (Set_Parameter_Type);
13254 pragma Inline (Set_Parent_Spec);
13255 pragma Inline (Set_Position);
13256 pragma Inline (Set_Pragma_Argument_Associations);
13257 pragma Inline (Set_Pragma_Identifier);
13258 pragma Inline (Set_Pragmas_After);
13259 pragma Inline (Set_Pragmas_Before);
13260 pragma Inline (Set_Pre_Post_Conditions);
13261 pragma Inline (Set_Prefix);
13262 pragma Inline (Set_Premature_Use);
13263 pragma Inline (Set_Present_Expr);
13264 pragma Inline (Set_Prev_Ids);
13265 pragma Inline (Set_Print_In_Hex);
13266 pragma Inline (Set_Private_Declarations);
13267 pragma Inline (Set_Private_Present);
13268 pragma Inline (Set_Procedure_To_Call);
13269 pragma Inline (Set_Proper_Body);
13270 pragma Inline (Set_Protected_Definition);
13271 pragma Inline (Set_Protected_Present);
13272 pragma Inline (Set_Raises_Constraint_Error);
13273 pragma Inline (Set_Range_Constraint);
13274 pragma Inline (Set_Range_Expression);
13275 pragma Inline (Set_Real_Range_Specification);
13276 pragma Inline (Set_Realval);
13277 pragma Inline (Set_Reason);
13278 pragma Inline (Set_Record_Extension_Part);
13279 pragma Inline (Set_Redundant_Use);
13280 pragma Inline (Set_Renaming_Exception);
13281 pragma Inline (Set_Result_Definition);
13282 pragma Inline (Set_Return_Object_Declarations);
13283 pragma Inline (Set_Reverse_Present);
13284 pragma Inline (Set_Right_Opnd);
13285 pragma Inline (Set_Rounded_Result);
13286 pragma Inline (Set_SCIL_Controlling_Tag);
13287 pragma Inline (Set_SCIL_Entity);
13288 pragma Inline (Set_SCIL_Tag_Value);
13289 pragma Inline (Set_SCIL_Target_Prim);
13290 pragma Inline (Set_Scope);
13291 pragma Inline (Set_Select_Alternatives);
13292 pragma Inline (Set_Selector_Name);
13293 pragma Inline (Set_Selector_Names);
13294 pragma Inline (Set_Shift_Count_OK);
13295 pragma Inline (Set_Source_Type);
13296 pragma Inline (Set_Split_PPC);
13297 pragma Inline (Set_Statements);
13298 pragma Inline (Set_Storage_Pool);
13299 pragma Inline (Set_Strval);
13300 pragma Inline (Set_Subpool_Handle_Name);
13301 pragma Inline (Set_Subtype_Indication);
13302 pragma Inline (Set_Subtype_Mark);
13303 pragma Inline (Set_Subtype_Marks);
13304 pragma Inline (Set_Suppress_Assignment_Checks);
13305 pragma Inline (Set_Suppress_Loop_Warnings);
13306 pragma Inline (Set_Synchronized_Present);
13307 pragma Inline (Set_TSS_Elist);
13308 pragma Inline (Set_Tagged_Present);
13309 pragma Inline (Set_Target_Type);
13310 pragma Inline (Set_Task_Definition);
13311 pragma Inline (Set_Task_Present);
13312 pragma Inline (Set_Then_Actions);
13313 pragma Inline (Set_Then_Statements);
13314 pragma Inline (Set_Treat_Fixed_As_Integer);
13315 pragma Inline (Set_Triggering_Alternative);
13316 pragma Inline (Set_Triggering_Statement);
13317 pragma Inline (Set_Type_Definition);
13318 pragma Inline (Set_Uneval_Old_Accept);
13319 pragma Inline (Set_Uneval_Old_Warn);
13320 pragma Inline (Set_Unit);
13321 pragma Inline (Set_Uninitialized_Variable);
13322 pragma Inline (Set_Unknown_Discriminants_Present);
13323 pragma Inline (Set_Unreferenced_In_Spec);
13324 pragma Inline (Set_Used_Operations);
13325 pragma Inline (Set_Variant_Part);
13326 pragma Inline (Set_Variants);
13327 pragma Inline (Set_Visible_Declarations);
13328 pragma Inline (Set_Was_Expression_Function);
13329 pragma Inline (Set_Was_Originally_Stub);
13330 pragma Inline (Set_Withed_Body);
13331
13332 end Sinfo;