1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2019, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
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.
36 -- The grammar in the RM is followed very closely in the tree design, and is
37 -- repeated as part of this source file.
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.
46 -- WARNING: Several files are automatically generated from this package.
47 -- See below for details.
49 with Namet; use Namet;
50 with Types; use Types;
51 with Uintp; use Uintp;
52 with Urealp; use Urealp;
56 ---------------------------------
57 -- Making Changes to This File --
58 ---------------------------------
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:
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
73 -- The body of the access function
74 -- The body of the set procedure
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
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.
84 -- If a new tree node is added, then the following changes are made:
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
102 -- All back ends must be made aware of the new node kind.
104 -- Finally, four utility programs must be run:
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.
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.
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
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
126 -- The above steps are done automatically by the build scripts when you do
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.
133 --------------------------------
134 -- Implicit Nodes in the Tree --
135 --------------------------------
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
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.
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.
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.
160 -------------------------------------------
161 -- Handling of Defining Identifier Lists --
162 -------------------------------------------
164 -- In several declarative forms in the syntax, lists of defining
165 -- identifiers appear (object declarations, component declarations, number
166 -- declarations etc.)
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).
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.
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.
186 -----------------------
187 -- Use of Node Lists --
188 -----------------------
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.
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.
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:
206 -- Alt := First (Alternatives (Stmt));
207 -- while Present (Alt) loop
209 -- -- processing for case statement alternative Alt
211 -- Alt := Next (Alt);
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.
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.
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
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.
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.
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.
248 -- In the case of the variants list, we can either write:
250 -- Variant := First (Variants (N));
251 -- while Present (Variant) loop
253 -- Variant := Next (Variant);
258 -- Variant := First_Non_Pragma (Variants (N));
259 -- while Present (Variant) loop
261 -- Variant := Next_Non_Pragma (Variant);
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.
268 ---------------------
269 -- Optional Fields --
270 ---------------------
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.
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.
289 -----------------------------------
290 -- Note on Body/Spec Terminology --
291 -----------------------------------
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
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
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.
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.
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.
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.
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.
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.
342 -- This convention is followed throughout the GNAT documentation
343 -- both internal and external, and in all error message text.
345 ------------------------
346 -- Internal Use Nodes --
347 ------------------------
349 -- These are Node_Kind settings used in the internal implementation which
350 -- are not logically part of the specification.
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).
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).
364 -----------------------------------------
365 -- Note on the settings of Sloc fields --
366 -----------------------------------------
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.
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.
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.
386 -----------------------
387 -- Field Definitions --
388 -----------------------
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.
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:
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.
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.
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.
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
435 -- Note: see under (EXPRESSION) for further details on the use of
436 -- the Paren_Count field to record the number of parentheses levels.
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.
447 -----------------------
448 -- Gigi Restrictions --
449 -----------------------
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.
457 -- Note that most of these restrictions apply only to trees generated when
458 -- code is being generated, since they involved expander actions that
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
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.
474 -- At least in ASIS mode (not really important in non-ASIS mode), when
475 -- N1 is rewritten as N2:
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).
482 -- For all the direct descendants of N1 (original node) their Parent
483 -- links should point not to N1, but to N2 (rewriting node).
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 ???
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:
497 -- Generic specifications and generic bodies
498 -- Function calls that use prefixed notation (Operand.Operation [(...)])
500 -- Representation Information
502 -- For the purposes of the data description annex, the representation
503 -- information for source declared entities must be complete in the
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.
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:
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.
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.
524 -- Some other ASIS-specific issues are covered in specific comments in
525 -- sections for particular nodes or flags.
531 -- The SPARK RM 6.9 defines two classes of constructs - Ghost entities and
532 -- Ghost statements. The intent of the feature is to treat Ghost constructs
533 -- as non-existent when Ghost assertion policy Ignore is in effect.
535 -- The corresponding nodes which map to Ghost constructs are:
543 -- N_Assignment_Statement
544 -- N_Procedure_Call_Statement
547 -- In addition, the compiler treats instantiations as Ghost entities
549 -- To achieve the removal of ignored Ghost constructs, the compiler relies
550 -- on global variables Ghost_Mode and Ignored_Ghost_Region, which comprise
551 -- a mechanism called "Ghost regions".
553 -- The values of Ghost_Mode are as follows:
555 -- 1. Check - All static semantics as defined in SPARK RM 6.9 are in
556 -- effect. The Ghost region has mode Check.
558 -- 2. Ignore - Same as Check, ignored Ghost code is not present in ALI
559 -- files, object files, and the final executable. The Ghost region
562 -- 3. None - No Ghost region is in effect
564 -- The value of Ignored_Ghost_Region captures the node which initiates an
565 -- ignored Ghost region.
567 -- A Ghost region is a compiler operating mode, similar to Check_Syntax,
568 -- however a region is much more finely grained and depends on the policy
569 -- in effect. The region starts prior to the analysis of a Ghost construct
570 -- and ends immediately after its expansion. The region is established as
573 -- 1. Declarations - Prior to analysis, if the declaration is subject to
576 -- 2. Renaming declarations - Same as 1) or when the renamed entity is
579 -- 3. Completing declarations - Same as 1) or when the declaration is
580 -- partially analyzed and the declaration completes a Ghost entity.
582 -- 4. N_Package_Body, N_Subprogram_Body - Same as 1) or when the body is
583 -- partially analyzed and completes a Ghost entity.
585 -- 5. N_Assignment_Statement - After the left hand side is analyzed and
586 -- references a Ghost entity.
588 -- 6. N_Procedure_Call_Statement - After the name is analyzed and denotes
589 -- a Ghost procedure.
591 -- 7. N_Pragma - During analysis, when the related entity is Ghost or the
592 -- pragma encloses a Ghost entity.
594 -- 8. Instantiations - Save as 1) or when the instantiation is partially
595 -- analyzed and the generic template is Ghost.
597 -- The following routines install a new Ghost region:
599 -- Install_Ghost_Region
600 -- Mark_And_Set_Ghost_xxx
603 -- The following routine ends a Ghost region:
605 -- Restore_Ghost_Region
607 -- A region may be reinstalled similarly to scopes for decoupled expansion
608 -- such as the generation of dispatch tables or the creation of a predicate
611 -- If the mode of a Ghost region is Ignore, any newly created nodes as well
612 -- as source entities are marked as ignored Ghost. In additon, the marking
613 -- process signals all enclosing scopes that an ignored Ghost node resides
614 -- within. The compilation unit where the node resides is also added to an
615 -- auxiliary table for post processing.
617 -- After the analysis and expansion of all compilation units takes place
618 -- as well as the instantiation of all inlined [generic] bodies, the GNAT
619 -- driver initiates a separate pass which removes all ignored Ghost nodes
620 -- from all units stored in the auxiliary table.
626 -- When a file is compiled in GNATprove mode (-gnatd.F), a very light
627 -- expansion is performed and the analysis must generate a tree in a
628 -- form that meets additional requirements.
630 -- This light expansion does two transformations of the tree that cannot
631 -- be postponed till after semantic analysis:
633 -- 1. Replace object renamings by renamed object. This requires the
634 -- introduction of temporaries at the point of the renaming, which
635 -- must be properly analyzed.
637 -- 2. Fully qualify entity names. This is needed to generate suitable
638 -- local effects and call-graphs in ALI files, with the completely
639 -- qualified names (in particular the suffix to distinguish homonyms).
641 -- The tree after this light expansion should be fully analyzed
642 -- semantically, which sometimes requires the insertion of semantic
643 -- preanalysis, for example for subprogram contracts and pragma
644 -- check/assert. In particular, all expression must have their proper type,
645 -- and semantic links should be set between tree nodes (partial to full
646 -- view, etc.) Some kinds of nodes should be either absent, or can be
647 -- ignored by the formal verification backend:
649 -- N_Object_Renaming_Declaration: can be ignored safely
650 -- N_Expression_Function: absent (rewritten)
651 -- N_Expression_With_Actions: absent (not generated)
653 -- SPARK cross-references are generated from the regular cross-references
654 -- (used for browsing and code understanding) and additional references
655 -- collected during semantic analysis, in particular on all dereferences.
656 -- These SPARK cross-references are output in a separate section of ALI
657 -- files, as described in spark_xrefs.adb. They are the basis for the
658 -- computation of data dependences in GNATprove. This implies that all
659 -- cross-references should be generated in this mode, even those that would
660 -- not make sense from a user point-of-view, and that cross-references that
661 -- do not lead to data dependences for subprograms can be safely ignored.
663 -- GNATprove relies on the following front end behaviors:
665 -- 1. The first declarations in the list of visible declarations of
666 -- a package declaration for a generic instance, up to the first
667 -- declaration which comes from source, should correspond to
668 -- the "mappings nodes" between formal and actual generic parameters.
670 -- 2. In addition pragma Debug statements are removed from the tree
671 -- (rewritten to NULL stmt), since they should be ignored in formal
674 -- 3. An error is also issued for missing subunits, similar to the
675 -- warning issued when generating code, to avoid formal verification
676 -- of a partial unit.
678 -- 4. Unconstrained types are not replaced by constrained types whose
679 -- bounds are generated from an expression: Expand_Subtype_From_Expr
680 -- should be a no-op.
682 -- 5. Errors (instead of warnings) are issued on compile-time-known
683 -- constraint errors even though such cases do not correspond to
684 -- illegalities in the Ada RM (this is simply another case where
685 -- GNATprove implements a subset of the full language).
687 -- However, there are a few exceptions to this rule for cases where
688 -- we want to allow the GNATprove analysis to proceed (e.g. range
689 -- checks on empty ranges, which typically appear in deactivated
690 -- code in a particular configuration).
692 -- 6. Subtypes should match in the AST, even after a generic is
693 -- instantiated. In particular, GNATprove relies on the fact that,
694 -- on a selected component, the type of the selected component is
695 -- the type of the corresponding component in the prefix of the
696 -- selected component.
698 -- Note that, in some cases, we know that this rule is broken by the
699 -- frontend. In particular, if the selected component is a packed
700 -- array depending on a discriminant of a unconstrained formal object
701 -- parameter of a generic.
707 -- The SPARK RM 1.6.5 defines a mode of operation called "SPARK mode" which
708 -- starts a scope where the SPARK language semantics are either On, Off, or
709 -- Auto, where Auto leaves the choice to the tools. A SPARK mode may be
710 -- specified by means of an aspect or a pragma.
712 -- The following entities may be subject to a SPARK mode. Entities marked
713 -- with * may possess two differente SPARK modes.
718 -- E_Generic_Function
719 -- E_Generic_Package *
720 -- E_Generic_Procedure
726 -- E_Protected_Subtype
727 -- E_Protected_Type *
734 -- In order to manage SPARK scopes, the compiler relies on global variables
735 -- SPARK_Mode and SPARK_Mode_Pragma and a mechanism called "SPARK regions."
736 -- Routines Install_SPARK_Mode and Set_SPARK_Mode create a new SPARK region
737 -- and routine Restore_SPARK_Mode ends a SPARK region. A region may be
738 -- reinstalled similarly to scopes.
740 -----------------------
741 -- Check Flag Fields --
742 -----------------------
744 -- The following flag fields appear in expression nodes:
750 -- These three flags are always set by the front end during semantic
751 -- analysis, on expression nodes that may trigger the corresponding
752 -- check. The front end then inserts or not the check during expansion. In
753 -- particular, these flags should also be correctly set in ASIS mode and
754 -- GNATprove mode. As a special case, the front end does not insert a
755 -- Do_Division_Check flag on float exponentiation expressions, for the case
756 -- where the value is 0.0 and the exponent is negative, although this case
757 -- does lead to a division check failure. As another special case,
758 -- the front end does not insert a Do_Range_Check on an allocator where
759 -- the designated type is scalar, and the designated type is more
760 -- constrained than the type of the initialized allocator value or the type
761 -- of the default value for an uninitialized allocator.
763 -- Note that the expander always takes care of the Do_Range_Check case, so
764 -- this flag will never be set in the expanded tree passed to the back end.
765 -- For the other two flags, the check can be generated either by the back
766 -- end or by the front end, depending on the setting of a target parameter.
768 -- Note that this accounts for all nodes that trigger the corresponding
769 -- checks, except for range checks on subtype_indications, which may be
770 -- required to check that a range_constraint is compatible with the given
771 -- subtype (RM 3.2.2(11)).
773 -- The following flag fields appear in various nodes:
775 -- Do_Accessibility_Check
776 -- Do_Discriminant_Check
781 -- These flags are used in some specific cases by the front end, either
782 -- during semantic analysis or during expansion, and cannot be expected
783 -- to be set on all nodes that trigger the corresponding check.
785 ------------------------
786 -- Common Flag Fields --
787 ------------------------
789 -- The following flag fields appear in all nodes:
792 -- This flag is used to indicate that a node (and all its children) have
793 -- been analyzed. It is used to avoid reanalysis of a node that has
794 -- already been analyzed, both for efficiency and functional correctness
798 -- This flag is set if the node comes directly from an explicit construct
799 -- in the source. It is normally on for any nodes built by the scanner or
800 -- parser from the source program, with the exception that in a few cases
801 -- the parser adds nodes to normalize the representation (in particular
802 -- a null statement is added to a package body if there is no begin/end
803 -- initialization section.
805 -- Most nodes inserted by the analyzer or expander are not considered
806 -- as coming from source, so the flag is off for such nodes. In a few
807 -- cases, the expander constructs nodes closely equivalent to nodes
808 -- from the source program (e.g. the allocator built for build-in-place
809 -- case), and the Comes_From_Source flag is deliberately set.
812 -- This flag is used to avoid multiple error messages being posted on or
813 -- referring to the same node. This flag is set if an error message
814 -- refers to a node or is posted on its source location, and has the
815 -- effect of inhibiting further messages involving this same node.
817 -----------------------
818 -- Modify_Tree_For_C --
819 -----------------------
821 -- If the flag Opt.Modify_Tree_For_C is set True, then the tree is modified
822 -- in ways that help match the semantics better with C, easing the task of
823 -- interfacing to C code generators (other than GCC, where the work is done
824 -- in gigi, and there is no point in changing that), and also making life
825 -- easier for Cprint in generating C source code.
827 -- The current modifications implemented are as follows:
829 -- N_Op_Rotate_Left, N_Op_Rotate_Right, N_Shift_Right_Arithmetic nodes
830 -- are eliminated from the tree (since these operations do not exist in
831 -- C), and the operations are rewritten in terms of logical shifts and
832 -- other logical operations that do exist in C. See Exp_Ch4 expansion
833 -- routines for these operators for details of the transformations made.
835 -- The right operand of N_Op_Shift_Right and N_Op_Shift_Left is always
836 -- less than the word size (since other values are not well-defined in
837 -- C). This is done using an explicit test if necessary.
839 -- Min and Max attributes are expanded into equivalent if expressions,
840 -- dealing properly with side effect issues.
842 -- Mod for signed integer types is expanded into equivalent expressions
843 -- using Rem (which is % in C) and other C-available operators.
845 -- Functions returning bounded arrays are transformed into procedures
846 -- with an extra out parameter, and the calls updated accordingly.
848 -- Aggregates are only kept unexpanded for object declarations, otherwise
849 -- they are systematically expanded into loops (for arrays) and
850 -- individual assignments (for records).
852 -- Unconstrained array types are handled by means of fat pointers.
854 -- Postconditions are inlined by the frontend since their body may have
855 -- references to itypes defined in the enclosing subprogram.
857 ------------------------------------
858 -- Description of Semantic Fields --
859 ------------------------------------
861 -- The meaning of the syntactic fields is generally clear from their names
862 -- without any further description, since the names are chosen to
863 -- correspond very closely to the syntax in the reference manual. This
864 -- section describes the usage of the semantic fields, which are used to
865 -- contain additional information determined during semantic analysis.
867 -- Accept_Handler_Records (List5-Sem)
868 -- This field is present only in an N_Accept_Alternative node. It is used
869 -- to temporarily hold the exception handler records from an accept
870 -- statement in a selective accept. These exception handlers will
871 -- eventually be placed in the Handler_Records list of the procedure
872 -- built for this accept (see Expand_N_Selective_Accept procedure in
873 -- Exp_Ch9 for further details).
875 -- Access_Types_To_Process (Elist2-Sem)
876 -- Present in N_Freeze_Entity nodes for Incomplete or private types.
877 -- Contains the list of access types which may require specific treatment
878 -- when the nature of the type completion is completely known. An example
879 -- of such treatment is the generation of the associated_final_chain.
881 -- Actions (List1-Sem)
882 -- This field contains a sequence of actions that are associated with the
883 -- node holding the field. See the individual node types for details of
884 -- how this field is used, as well as the description of the specific use
885 -- for a particular node type.
887 -- Activation_Chain_Entity (Node3-Sem)
888 -- This is used in tree nodes representing task activators (blocks,
889 -- subprogram bodies, package declarations, and task bodies). It is
890 -- initially Empty, and then gets set to point to the entity for the
891 -- declared Activation_Chain variable when the first task is declared.
892 -- When tasks are declared in the corresponding declarative region this
893 -- entity is located by name (its name is always _Chain) and the declared
894 -- tasks are added to the chain. Note that N_Extended_Return_Statement
895 -- does not have this attribute, although it does have an activation
896 -- chain. This chain is used to store the tasks temporarily, and is not
897 -- used for activating them. On successful completion of the return
898 -- statement, the tasks are moved to the caller's chain, and the caller
901 -- Acts_As_Spec (Flag4-Sem)
902 -- A flag set in the N_Subprogram_Body node for a subprogram body which
903 -- is acting as its own spec. In the case of a library-level subprogram
904 -- the flag is set as well on the parent compilation unit node.
906 -- Actual_Designated_Subtype (Node4-Sem)
907 -- Present in N_Free_Statement and N_Explicit_Dereference nodes. If gigi
908 -- needs to known the dynamic constrained subtype of the designated
909 -- object, this attribute is set to that type. This is done for
910 -- N_Free_Statements for access-to-classwide types and access to
911 -- unconstrained packed array types, and for N_Explicit_Dereference when
912 -- the designated type is an unconstrained packed array and the
913 -- dereference is the prefix of a 'Size attribute reference.
915 -- Address_Warning_Posted (Flag18-Sem)
916 -- Present in N_Attribute_Definition nodes. Set to indicate that we have
917 -- posted a warning for the address clause regarding size or alignment
918 -- issues. Used to inhibit multiple redundant messages.
920 -- Aggregate_Bounds (Node3-Sem)
921 -- Present in array N_Aggregate nodes. If the bounds of the aggregate are
922 -- known at compile time, this field points to an N_Range node with those
923 -- bounds. Otherwise Empty.
925 -- Alloc_For_BIP_Return (Flag1-Sem)
926 -- Present in N_Allocator nodes. True if the allocator is one of those
927 -- generated for a build-in-place return statement.
929 -- All_Others (Flag11-Sem)
930 -- Present in an N_Others_Choice node. This flag is set for an others
931 -- exception where all exceptions are to be caught, even those that are
932 -- not normally handled (in particular the tasking abort signal). This
933 -- is used for translation of the at end handler into a normal exception
936 -- Aspect_Rep_Item (Node2-Sem)
937 -- Present in N_Aspect_Specification nodes. Points to the corresponding
938 -- pragma/attribute definition node used to process the aspect.
940 -- Assignment_OK (Flag15-Sem)
941 -- This flag is set in a subexpression node for an object, indicating
942 -- that the associated object can be modified, even if this would not
943 -- normally be permissible (either by direct assignment, or by being
944 -- passed as an out or in-out parameter). This is used by the expander
945 -- for a number of purposes, including initialization of constants and
946 -- limited type objects (such as tasks), setting discriminant fields,
947 -- setting tag values, etc. N_Object_Declaration nodes also have this
948 -- flag defined. Here it is used to indicate that an initialization
949 -- expression is valid, even where it would normally not be allowed
950 -- (e.g. where the type involved is limited). It is also used to stop
951 -- a Force_Evaluation call for an unchecked conversion, but this usage
952 -- is unclear and not documented ???
954 -- Associated_Node (Node4-Sem)
955 -- Present in nodes that can denote an entity: identifiers, character
956 -- literals, operator symbols, expanded names, operator nodes, and
957 -- attribute reference nodes (all these nodes have an Entity field).
958 -- This field is also present in N_Aggregate, N_Selected_Component, and
959 -- N_Extension_Aggregate nodes. This field is used in generic processing
960 -- to create links between the generic template and the generic copy.
961 -- See Sem_Ch12.Get_Associated_Node for full details. Note that this
962 -- field overlaps Entity, which is fine, since, as explained in Sem_Ch12,
963 -- the normal function of Entity is not required at the point where the
964 -- Associated_Node is set. Note also, that in generic templates, this
965 -- means that the Entity field does not necessarily point to an Entity.
966 -- Since the back end is expected to ignore generic templates, this is
969 -- Atomic_Sync_Required (Flag14-Sem)
970 -- This flag is set on a node for which atomic synchronization is
971 -- required for the corresponding reference or modification.
973 -- At_End_Proc (Node1)
974 -- This field is present in an N_Handled_Sequence_Of_Statements node.
975 -- It contains an identifier reference for the cleanup procedure to be
976 -- called. See description of this node for further details.
978 -- Backwards_OK (Flag6-Sem)
979 -- A flag present in the N_Assignment_Statement node. It is used only
980 -- if the type being assigned is an array type, and is set if analysis
981 -- determines that it is definitely safe to do the copy backwards, i.e.
982 -- starting at the highest addressed element. This is the case if either
983 -- the operands do not overlap, or they may overlap, but if they do,
984 -- then the left operand is at a higher address than the right operand.
986 -- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
987 -- means that the front end could not determine that either direction is
988 -- definitely safe, and a runtime check may be required if the backend
989 -- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
990 -- set, it means that the front end can assure no overlap of operands.
992 -- Body_To_Inline (Node3-Sem)
993 -- Present in subprogram declarations. Denotes analyzed but unexpanded
994 -- body of subprogram, to be used when inlining calls. Present when the
995 -- subprogram has an Inline pragma and inlining is enabled. If the
996 -- declaration is completed by a renaming_as_body, and the renamed entity
997 -- is a subprogram, the Body_To_Inline is the name of that entity, which
998 -- is used directly in later calls to the original subprogram.
1000 -- Body_Required (Flag13-Sem)
1001 -- A flag that appears in the N_Compilation_Unit node indicating that
1002 -- the corresponding unit requires a body. For the package case, this
1003 -- indicates that a completion is required. In Ada 95, if the flag is not
1004 -- set for the package case, then a body may not be present. In Ada 83,
1005 -- if the flag is not set for the package case, then body is optional.
1006 -- For a subprogram declaration, the flag is set except in the case where
1007 -- a pragma Import or Interface applies, in which case no body is
1008 -- permitted (in Ada 83 or Ada 95).
1010 -- By_Ref (Flag5-Sem)
1011 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement,
1012 -- this flag is set when the returned expression is already allocated on
1013 -- the secondary stack and thus the result is passed by reference rather
1014 -- than copied another time.
1016 -- Cleanup_Actions (List5-Sem)
1017 -- Present in block statements created for transient blocks, contains
1018 -- additional cleanup actions carried over from the transient scope.
1020 -- Check_Address_Alignment (Flag11-Sem)
1021 -- A flag present in N_Attribute_Definition clause for a 'Address
1022 -- attribute definition. This flag is set if a dynamic check should be
1023 -- generated at the freeze point for the entity to which this address
1024 -- clause applies. The reason that we need this flag is that we want to
1025 -- check for range checks being suppressed at the point where the
1026 -- attribute definition clause is given, rather than testing this at the
1029 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
1030 -- Present in N_Simple_Return_Statement nodes. True if this node was
1031 -- constructed as part of the N_Extended_Return_Statement expansion.
1033 -- Compile_Time_Known_Aggregate (Flag18-Sem)
1034 -- Present in N_Aggregate nodes. Set for aggregates which can be fully
1035 -- evaluated at compile time without raising constraint error. Such
1036 -- aggregates can be passed as is to the back end without any expansion.
1037 -- See Exp_Aggr for specific conditions under which this flag gets set.
1039 -- Componentwise_Assignment (Flag14-Sem)
1040 -- Present in N_Assignment_Statement nodes. Set for a record assignment
1041 -- where all that needs doing is to expand it into component-by-component
1042 -- assignments. This is used internally for the case of tagged types with
1043 -- rep clauses, where we need to avoid recursion (we don't want to try to
1044 -- generate a call to the primitive operation, because this is the case
1045 -- where we are compiling the primitive operation). Note that when we are
1046 -- expanding component assignments in this case, we never assign the _tag
1047 -- field, but we recursively assign components of the parent type.
1049 -- Condition_Actions (List3-Sem)
1050 -- This field appears in else-if nodes and in the iteration scheme node
1051 -- for while loops. This field is only used during semantic processing to
1052 -- temporarily hold actions inserted into the tree. In the tree passed
1053 -- to gigi, the condition actions field is always set to No_List. For
1054 -- details on how this field is used, see the routine Insert_Actions in
1055 -- package Exp_Util, and also the expansion routines for the relevant
1058 -- Context_Pending (Flag16-Sem)
1059 -- This field appears in Compilation_Unit nodes, to indicate that the
1060 -- context of the unit is being compiled. Used to detect circularities
1061 -- that are not otherwise detected by the loading mechanism. Such
1062 -- circularities can occur in the presence of limited and non-limited
1063 -- with_clauses that mention the same units.
1065 -- Controlling_Argument (Node1-Sem)
1066 -- This field is set in procedure and function call nodes if the call
1067 -- is a dispatching call (it is Empty for a non-dispatching call). It
1068 -- indicates the source of the call's controlling tag. For procedure
1069 -- calls, the Controlling_Argument is one of the actuals. For function
1070 -- that has a dispatching result, it is an entity in the context of the
1071 -- call that can provide a tag, or else it is the tag of the root type
1072 -- of the class. It can also specify a tag directly rather than being a
1073 -- tagged object. The latter is needed by the implementations of AI-239
1076 -- Conversion_OK (Flag14-Sem)
1077 -- A flag set on type conversion nodes to indicate that the conversion
1078 -- is to be considered as being valid, even though it is the case that
1079 -- the conversion is not valid Ada. This is used for attributes Enum_Rep,
1080 -- Fixed_Value and Integer_Value, for internal conversions done for
1081 -- fixed-point operations, and for certain conversions for calls to
1082 -- initialization procedures. If Conversion_OK is set, then Etype must be
1083 -- set (the analyzer assumes that Etype has been set). For the case of
1084 -- fixed-point operands, it also indicates that the conversion is to be
1085 -- direct conversion of the underlying integer result, with no regard to
1086 -- the small operand.
1088 -- Convert_To_Return_False (Flag13-Sem)
1089 -- Present in N_Raise_Expression nodes that appear in the body of the
1090 -- special predicateM function used to test a predicate in the context
1091 -- of a membership test, where raise expression results in returning a
1092 -- value of False rather than raising an exception.
1094 -- Corresponding_Aspect (Node3-Sem)
1095 -- Present in N_Pragma node. Used to point back to the source aspect from
1096 -- the corresponding pragma. This field is Empty for source pragmas.
1098 -- Corresponding_Body (Node5-Sem)
1099 -- This field is set in subprogram declarations, package declarations,
1100 -- entry declarations of protected types, and in generic units. It points
1101 -- to the defining entity for the corresponding body (NOT the node for
1102 -- the body itself).
1104 -- Corresponding_Formal_Spec (Node3-Sem)
1105 -- This field is set in subprogram renaming declarations, where it points
1106 -- to the defining entity for a formal subprogram in the case where the
1107 -- renaming corresponds to a generic formal subprogram association in an
1108 -- instantiation. The field is Empty if the renaming does not correspond
1109 -- to such a formal association.
1111 -- Corresponding_Generic_Association (Node5-Sem)
1112 -- This field is defined for object declarations and object renaming
1113 -- declarations. It is set for the declarations within an instance that
1114 -- map generic formals to their actuals. If set, the field points either
1115 -- to a copy of a default expression for an actual of mode IN or to a
1116 -- generic_association which is the original parent of the expression or
1117 -- name appearing in the declaration. This simplifies ASIS and GNATprove
1120 -- Corresponding_Integer_Value (Uint4-Sem)
1121 -- This field is set in real literals of fixed-point types (it is not
1122 -- used for floating-point types). It contains the integer value used
1123 -- to represent the fixed-point value. It is also set on the universal
1124 -- real literals used to represent bounds of fixed-point base types
1125 -- and their first named subtypes.
1127 -- Corresponding_Spec (Node5-Sem)
1128 -- This field is set in subprogram, package, task, and protected body
1129 -- nodes, where it points to the defining entity in the corresponding
1130 -- spec. The attribute is also set in N_With_Clause nodes where it points
1131 -- to the defining entity for the with'ed spec, and in a subprogram
1132 -- renaming declaration when it is a Renaming_As_Body. The field is Empty
1133 -- if there is no corresponding spec, as in the case of a subprogram body
1134 -- that serves as its own spec.
1136 -- In Ada 2012, Corresponding_Spec is set on expression functions that
1137 -- complete a subprogram declaration.
1139 -- Corresponding_Spec_Of_Stub (Node2-Sem)
1140 -- This field is present in subprogram, package, task, and protected body
1141 -- stubs where it points to the corresponding spec of the stub. Due to
1142 -- clashes in the structure of nodes, we cannot use Corresponding_Spec.
1144 -- Corresponding_Stub (Node3-Sem)
1145 -- This field is present in an N_Subunit node. It holds the node in
1146 -- the parent unit that is the stub declaration for the subunit. It is
1147 -- set when analysis of the stub forces loading of the proper body. If
1148 -- expansion of the proper body creates new declarative nodes, they are
1149 -- inserted at the point of the corresponding_stub.
1151 -- Dcheck_Function (Node5-Sem)
1152 -- This field is present in an N_Variant node, It references the entity
1153 -- for the discriminant checking function for the variant.
1155 -- Default_Expression (Node5-Sem)
1156 -- This field is Empty if there is no default expression. If there is a
1157 -- simple default expression (one with no side effects), then this field
1158 -- simply contains a copy of the Expression field (both point to the tree
1159 -- for the default expression). Default_Expression is used for
1160 -- conformance checking.
1162 -- Default_Storage_Pool (Node3-Sem)
1163 -- This field is present in N_Compilation_Unit_Aux nodes. It is set to a
1164 -- copy of Opt.Default_Pool at the end of the compilation unit. See
1165 -- package Opt for details. This is used for inheriting the
1166 -- Default_Storage_Pool in child units.
1168 -- Discr_Check_Funcs_Built (Flag11-Sem)
1169 -- This flag is present in N_Full_Type_Declaration nodes. It is set when
1170 -- discriminant checking functions are constructed. The purpose is to
1171 -- avoid attempting to set these functions more than once.
1173 -- Do_Accessibility_Check (Flag13-Sem)
1174 -- This flag is set on N_Parameter_Specification nodes to indicate
1175 -- that an accessibility check is required for the parameter. It is
1176 -- not yet decided who takes care of this check (TBD ???).
1178 -- Do_Discriminant_Check (Flag3-Sem)
1179 -- This flag is set on N_Selected_Component nodes to indicate that a
1180 -- discriminant check is required using the discriminant check routine
1181 -- associated with the selector. The actual check is generated by the
1182 -- expander when processing selected components. In the case of
1183 -- Unchecked_Union, the flag is also set, but no discriminant check
1184 -- routine is associated with the selector, and the expander does not
1185 -- generate a check. This flag is also present in assignment statements
1186 -- (and set if the assignment requires a discriminant check), and in type
1187 -- conversion nodes (and set if the conversion requires a check).
1189 -- Do_Division_Check (Flag13-Sem)
1190 -- This flag is set on a division operator (/ mod rem) to indicate that
1191 -- a zero divide check is required. The actual check is either dealt with
1192 -- by the back end if Backend_Divide_Checks is set to true, or by the
1193 -- front end itself if it is set to false.
1195 -- Do_Length_Check (Flag4-Sem)
1196 -- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
1197 -- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
1198 -- is required. It is not determined who deals with this flag (???).
1200 -- Do_Overflow_Check (Flag17-Sem)
1201 -- This flag is set on an operator where an overflow check is required on
1202 -- the operation. The actual check is either dealt with by the back end
1203 -- if Backend_Overflow_Checks is set to true, or by the front end itself
1204 -- if it is set to false. The other cases where this flag is used is on a
1205 -- Type_Conversion node as well on if and case expression nodes.
1206 -- For a type conversion, it means that the conversion is from one base
1207 -- type to another, and the value may not fit in the target base type.
1208 -- See also the description of Do_Range_Check for this case. This flag is
1209 -- also set on if and case expression nodes if we are operating in either
1210 -- MINIMIZED or ELIMINATED overflow checking mode (to make sure that we
1211 -- properly process overflow checking for dependent expressions).
1213 -- Do_Range_Check (Flag9-Sem)
1214 -- This flag is set on an expression which appears in a context where a
1215 -- range check is required. The target type is clear from the context.
1216 -- The contexts in which this flag can appear are the following:
1218 -- Right side of an assignment. In this case the target type is taken
1219 -- from the left side of the assignment, which is referenced by the
1220 -- Name of the N_Assignment_Statement node.
1222 -- Subscript expressions in an indexed component. In this case the
1223 -- target type is determined from the type of the array, which is
1224 -- referenced by the Prefix of the N_Indexed_Component node.
1226 -- Argument expression for a parameter, appearing either directly in
1227 -- the Parameter_Associations list of a call or as the Expression of an
1228 -- N_Parameter_Association node that appears in this list. In either
1229 -- case, the check is against the type of the formal. Note that the
1230 -- flag is relevant only in IN and IN OUT parameters, and will be
1231 -- ignored for OUT parameters, where no check is required in the call,
1232 -- and if a check is required on the return, it is generated explicitly
1233 -- with a type conversion.
1235 -- Initialization expression for the initial value in an object
1236 -- declaration. In this case the Do_Range_Check flag is set on
1237 -- the initialization expression, and the check is against the
1238 -- range of the type of the object being declared. This includes the
1239 -- cases of expressions providing default discriminant values, and
1240 -- expressions used to initialize record components.
1242 -- The expression of a type conversion. In this case the range check is
1243 -- against the target type of the conversion. See also the use of
1244 -- Do_Overflow_Check on a type conversion. The distinction is that the
1245 -- overflow check protects against a value that is outside the range of
1246 -- the target base type, whereas a range check checks that the
1247 -- resulting value (which is a value of the base type of the target
1248 -- type), satisfies the range constraint of the target type.
1250 -- Note: when a range check is required in contexts other than those
1251 -- listed above (e.g. in a return statement), an additional type
1252 -- conversion node is introduced to represent the required check.
1254 -- Do_Storage_Check (Flag17-Sem)
1255 -- This flag is set in an N_Allocator node to indicate that a storage
1256 -- check is required for the allocation, or in an N_Subprogram_Body node
1257 -- to indicate that a stack check is required in the subprogram prologue.
1258 -- The N_Allocator case is handled by the routine that expands the call
1259 -- to the runtime routine. The N_Subprogram_Body case is handled by the
1260 -- backend, and all the semantics does is set the flag.
1262 -- Do_Tag_Check (Flag13-Sem)
1263 -- This flag is set on an N_Assignment_Statement, N_Function_Call,
1264 -- N_Procedure_Call_Statement, N_Type_Conversion,
1265 -- N_Simple_Return_Statement, or N_Extended_Return_Statement
1266 -- node to indicate that the tag check can be suppressed. It is not
1267 -- yet decided how this flag is used (TBD ???).
1269 -- Elaborate_Present (Flag4-Sem)
1270 -- This flag is set in the N_With_Clause node to indicate that pragma
1271 -- Elaborate pragma appears for the with'ed units.
1273 -- Elaborate_All_Desirable (Flag9-Sem)
1274 -- This flag is set in the N_With_Clause mode to indicate that the static
1275 -- elaboration processing has determined that an Elaborate_All pragma is
1276 -- desirable for correct elaboration for this unit.
1278 -- Elaborate_All_Present (Flag14-Sem)
1279 -- This flag is set in the N_With_Clause node to indicate that a
1280 -- pragma Elaborate_All pragma appears for the with'ed units.
1282 -- Elaborate_Desirable (Flag11-Sem)
1283 -- This flag is set in the N_With_Clause mode to indicate that the static
1284 -- elaboration processing has determined that an Elaborate pragma is
1285 -- desirable for correct elaboration for this unit.
1287 -- Else_Actions (List3-Sem)
1288 -- This field is present in if expression nodes. During code
1289 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1290 -- actions at an appropriate place in the tree to get elaborated at the
1291 -- right time. For if expressions, we have to be sure that the actions
1292 -- for the Else branch are only elaborated if the condition is False.
1293 -- The Else_Actions field is used as a temporary parking place for
1294 -- these actions. The final tree is always rewritten to eliminate the
1295 -- need for this field, so in the tree passed to Gigi, this field is
1296 -- always set to No_List.
1298 -- Enclosing_Variant (Node2-Sem)
1299 -- This field is present in the N_Variant node and identifies the Node_Id
1300 -- corresponding to the immediately enclosing variant when the variant is
1301 -- nested, and N_Empty otherwise. Set during semantic processing of the
1302 -- variant part of a record type.
1304 -- Entity (Node4-Sem)
1305 -- Appears in all direct names (identifiers, character literals, and
1306 -- operator symbols), as well as expanded names, and attributes that
1307 -- denote entities, such as 'Class. Points to entity for corresponding
1308 -- defining occurrence. Set after name resolution. For identifiers in a
1309 -- WITH list, the corresponding defining occurrence is in a separately
1310 -- compiled file, and Entity must be set by the library Load procedure.
1312 -- Note: During name resolution, the value in Entity may be temporarily
1313 -- incorrect (e.g. during overload resolution, Entity is initially set to
1314 -- the first possible correct interpretation, and then later modified if
1315 -- necessary to contain the correct value after resolution).
1317 -- Note: This field overlaps Associated_Node, which is used during
1318 -- generic processing (see Sem_Ch12 for details). Note also that in
1319 -- generic templates, this means that the Entity field does not always
1320 -- point to an Entity. Since the back end is expected to ignore generic
1321 -- templates, this is harmless.
1323 -- Note: This field also appears in N_Attribute_Definition_Clause nodes.
1324 -- It is used only for stream attributes definition clauses. In this
1325 -- case, it denotes a (possibly dummy) subprogram entity that is declared
1326 -- conceptually at the point of the clause. Thus the visibility of the
1327 -- attribute definition clause (in the sense of 8.3(23) as amended by
1328 -- AI-195) can be checked by testing the visibility of that subprogram.
1330 -- Note: Normally the Entity field of an identifier points to the entity
1331 -- for the corresponding defining identifier, and hence the Chars field
1332 -- of an identifier will match the Chars field of the entity. However,
1333 -- there is no requirement that these match, and there are obscure cases
1334 -- of generated code where they do not match.
1336 -- Note: Ada 2012 aspect specifications require additional links between
1337 -- identifiers and various attributes. These attributes can be of
1338 -- arbitrary types, and the entity field of identifiers that denote
1339 -- aspects must be used to store arbitrary expressions for later semantic
1340 -- checks. See section on aspect specifications for details.
1342 -- Entity_Or_Associated_Node (Node4-Sem)
1343 -- A synonym for both Entity and Associated_Node. Used by convention in
1344 -- the code when referencing this field in cases where it is not known
1345 -- whether the field contains an Entity or an Associated_Node.
1347 -- Etype (Node5-Sem)
1348 -- Appears in all expression nodes, all direct names, and all entities.
1349 -- Points to the entity for the related type. Set after type resolution.
1350 -- Normally this is the actual subtype of the expression. However, in
1351 -- certain contexts such as the right side of an assignment, subscripts,
1352 -- arguments to calls, returned value in a function, initial value etc.
1353 -- it is the desired target type. In the event that this is different
1354 -- from the actual type, the Do_Range_Check flag will be set if a range
1355 -- check is required. Note: if the Is_Overloaded flag is set, then Etype
1356 -- points to an essentially arbitrary choice from the possible set of
1359 -- Exception_Junk (Flag8-Sem)
1360 -- This flag is set in a various nodes appearing in a statement sequence
1361 -- to indicate that the corresponding node is an artifact of the
1362 -- generated code for exception handling, and should be ignored when
1363 -- analyzing the control flow of the relevant sequence of statements
1364 -- (e.g. to check that it does not end with a bad return statement).
1366 -- Exception_Label (Node5-Sem)
1367 -- Appears in N_Push_xxx_Label nodes. Points to the entity of the label
1368 -- to be used for transforming the corresponding exception into a goto,
1369 -- or contains Empty, if this exception is not to be transformed. Also
1370 -- appears in N_Exception_Handler nodes, where, if set, it indicates
1371 -- that there may be a local raise for the handler, so that expansion
1372 -- to allow a goto is required (and this field contains the label for
1373 -- this goto). See Exp_Ch11.Expand_Local_Exception_Handlers for details.
1375 -- Expansion_Delayed (Flag11-Sem)
1376 -- Set on aggregates and extension aggregates that need a top-down rather
1377 -- than bottom-up expansion. Typically aggregate expansion happens bottom
1378 -- up. For nested aggregates the expansion is delayed until the enclosing
1379 -- aggregate itself is expanded, e.g. in the context of a declaration. To
1380 -- delay it we set this flag. This is done to avoid creating a temporary
1381 -- for each level of a nested aggregate, and also to prevent the
1382 -- premature generation of constraint checks. This is also a requirement
1383 -- if we want to generate the proper attachment to the internal????
1384 -- finalization lists (for record with controlled components). Top down
1385 -- expansion of aggregates is also used for in-place array aggregate
1386 -- assignment or initialization. When the full context is known, the
1387 -- target of the assignment or initialization is used to generate the
1388 -- left-hand side of individual assignment to each sub-component.
1390 -- Expression_Copy (Node2-Sem)
1391 -- Present in N_Pragma_Argument_Association nodes. Contains a copy of the
1392 -- original expression. This field is best used to store pragma-dependent
1393 -- modifications performed on the original expression such as replacement
1394 -- of the current type instance or substitutions of primitives.
1396 -- First_Inlined_Subprogram (Node3-Sem)
1397 -- Present in the N_Compilation_Unit node for the main program. Points
1398 -- to a chain of entities for subprograms that are to be inlined. The
1399 -- Next_Inlined_Subprogram field of these entities is used as a link
1400 -- pointer with Empty marking the end of the list. This field is Empty
1401 -- if there are no inlined subprograms or inlining is not active.
1403 -- First_Named_Actual (Node4-Sem)
1404 -- Present in procedure call statement and function call nodes, and also
1405 -- in Intrinsic nodes. Set during semantic analysis to point to the first
1406 -- named parameter where parameters are ordered by declaration order (as
1407 -- opposed to the actual order in the call which may be different due to
1408 -- named associations). Note: this field points to the explicit actual
1409 -- parameter itself, not the N_Parameter_Association node (its parent).
1411 -- First_Real_Statement (Node2-Sem)
1412 -- Present in N_Handled_Sequence_Of_Statements node. Normally set to
1413 -- Empty. Used only when declarations are moved into the statement part
1414 -- of a construct as a result of wrapping an AT END handler that is
1415 -- required to cover the declarations. In this case, this field is used
1416 -- to remember the location in the statements list of the first real
1417 -- statement, i.e. the statement that used to be first in the statement
1418 -- list before the declarations were prepended.
1420 -- First_Subtype_Link (Node5-Sem)
1421 -- Present in N_Freeze_Entity node for an anonymous base type that is
1422 -- implicitly created by the declaration of a first subtype. It points
1423 -- to the entity for the first subtype.
1425 -- Float_Truncate (Flag11-Sem)
1426 -- A flag present in type conversion nodes. This is used for float to
1427 -- integer conversions where truncation is required rather than rounding.
1429 -- Forwards_OK (Flag5-Sem)
1430 -- A flag present in the N_Assignment_Statement node. It is used only
1431 -- if the type being assigned is an array type, and is set if analysis
1432 -- determines that it is definitely safe to do the copy forwards, i.e.
1433 -- starting at the lowest addressed element. This is the case if either
1434 -- the operands do not overlap, or they may overlap, but if they do,
1435 -- then the left operand is at a lower address than the right operand.
1437 -- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
1438 -- means that the front end could not determine that either direction is
1439 -- definitely safe, and a runtime check may be required if the backend
1440 -- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
1441 -- set, it means that the front end can assure no overlap of operands.
1443 -- From_Aspect_Specification (Flag13-Sem)
1444 -- Processing of aspect specifications typically results in insertion in
1445 -- the tree of corresponding pragma or attribute definition clause nodes.
1446 -- These generated nodes have the From_Aspect_Specification flag set to
1447 -- indicate that they came from aspect specifications originally.
1449 -- From_At_End (Flag4-Sem)
1450 -- This flag is set on an N_Raise_Statement node if it corresponds to
1451 -- the reraise statement generated as the last statement of an AT END
1452 -- handler when SJLJ exception handling is active. It is used to stop
1453 -- a bogus violation of restriction (No_Exception_Propagation), bogus
1454 -- because if the restriction is set, the reraise is not generated.
1456 -- From_At_Mod (Flag4-Sem)
1457 -- This flag is set on the attribute definition clause node that is
1458 -- generated by a transformation of an at mod phrase in a record
1459 -- representation clause. This is used to give slightly different (Ada 83
1460 -- compatible) semantics to such a clause, namely it is used to specify a
1461 -- minimum acceptable alignment for the base type and all subtypes. In
1462 -- Ada 95 terms, the actual alignment of the base type and all subtypes
1463 -- must be a multiple of the given value, and the representation clause
1464 -- is considered to be type specific instead of subtype specific.
1466 -- From_Conditional_Expression (Flag1-Sem)
1467 -- This flag is set on if and case statements generated by the expansion
1468 -- of if and case expressions respectively. The flag is used to suppress
1469 -- any finalization of controlled objects found within these statements.
1471 -- From_Default (Flag6-Sem)
1472 -- This flag is set on the subprogram renaming declaration created in an
1473 -- instance for a formal subprogram, when the formal is declared with a
1474 -- box, and there is no explicit actual. If the flag is present, the
1475 -- declaration is treated as an implicit reference to the formal in the
1478 -- Generalized_Indexing (Node4-Sem)
1479 -- Present in N_Indexed_Component nodes. Set for Indexed_Component nodes
1480 -- that are Ada 2012 container indexing operations. The value of the
1481 -- attribute is a function call (possibly dereferenced) that corresponds
1482 -- to the proper expansion of the source indexing operation. Before
1483 -- expansion, the source node is rewritten as the resolved generalized
1484 -- indexing. In ASIS mode, the expansion does not take place, so that
1485 -- the source is preserved and properly annotated with types.
1487 -- Generic_Parent (Node5-Sem)
1488 -- Generic_Parent is defined on declaration nodes that are instances. The
1489 -- value of Generic_Parent is the generic entity from which the instance
1492 -- Generic_Parent_Type (Node4-Sem)
1493 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for the
1494 -- actuals of formal private and derived types. Within the instance, the
1495 -- operations on the actual are those inherited from the parent. For a
1496 -- formal private type, the parent type is the generic type itself. The
1497 -- Generic_Parent_Type is also used in an instance to determine whether a
1498 -- private operation overrides an inherited one.
1500 -- Handler_List_Entry (Node2-Sem)
1501 -- This field is present in N_Object_Declaration nodes. It is set only
1502 -- for the Handler_Record entry generated for an exception in zero cost
1503 -- exception handling mode. It references the corresponding item in the
1504 -- handler list, and is used to delete this entry if the corresponding
1505 -- handler is deleted during optimization. For further details on why
1506 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
1508 -- Has_Dereference_Action (Flag13-Sem)
1509 -- This flag is present in N_Explicit_Dereference nodes. It is set to
1510 -- indicate that the expansion has aready produced a call to primitive
1511 -- Dereference of a System.Checked_Pools.Checked_Pool implementation.
1512 -- Such dereference actions are produced for debugging purposes.
1514 -- Has_Dynamic_Length_Check (Flag10-Sem)
1515 -- This flag is present in all expression nodes. It is set to indicate
1516 -- that one of the routines in unit Checks has generated a length check
1517 -- action which has been inserted at the flagged node. This is used to
1518 -- avoid the generation of duplicate checks.
1520 -- Has_Dynamic_Range_Check (Flag12-Sem)
1521 -- This flag is present in N_Subtype_Declaration nodes and on all
1522 -- expression nodes. It is set to indicate that one of the routines in
1523 -- unit Checks has generated a range check action which has been inserted
1524 -- at the flagged node. This is used to avoid the generation of duplicate
1525 -- checks. Why does this occur on N_Subtype_Declaration nodes, what does
1526 -- it mean in that context???
1528 -- Has_Local_Raise (Flag8-Sem)
1529 -- Present in exception handler nodes. Set if the handler can be entered
1530 -- via a local raise that gets transformed to a goto statement. This will
1531 -- always be set if Local_Raise_Statements is non-empty, but can also be
1532 -- set as a result of generation of N_Raise_xxx nodes, or flags set in
1533 -- nodes requiring generation of back end checks.
1535 -- Has_No_Elaboration_Code (Flag17-Sem)
1536 -- A flag that appears in the N_Compilation_Unit node to indicate whether
1537 -- or not elaboration code is present for this unit. It is initially set
1538 -- true for subprogram specs and bodies and for all generic units and
1539 -- false for non-generic package specs and bodies. Gigi may set the flag
1540 -- in the non-generic package case if it determines that no elaboration
1541 -- code is generated. Note that this flag is not related to the
1542 -- Is_Preelaborated status, there can be preelaborated packages that
1543 -- generate elaboration code, and non-preelaborated packages which do
1544 -- not generate elaboration code.
1546 -- Has_Pragma_Suppress_All (Flag14-Sem)
1547 -- This flag is set in an N_Compilation_Unit node if the Suppress_All
1548 -- pragma appears anywhere in the unit. This accommodates the rather
1549 -- strange placement rules of other compilers (DEC permits it at the
1550 -- end of a unit, and Rational allows it as a program unit pragma). We
1551 -- allow it anywhere at all, and consider it equivalent to a pragma
1552 -- Suppress (All_Checks) appearing at the start of the configuration
1553 -- pragmas for the unit.
1555 -- Has_Private_View (Flag11-Sem)
1556 -- A flag present in generic nodes that have an entity, to indicate that
1557 -- the node has a private type. Used to exchange private and full
1558 -- declarations if the visibility at instantiation is different from the
1559 -- visibility at generic definition.
1561 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
1562 -- A flag present in N_Subprogram_Body and N_Task_Definition nodes to
1563 -- flag the presence of a pragma Relative_Deadline.
1565 -- Has_Self_Reference (Flag13-Sem)
1566 -- Present in N_Aggregate and N_Extension_Aggregate. Indicates that one
1567 -- of the expressions contains an access attribute reference to the
1568 -- enclosing type. Such a self-reference can only appear in default-
1569 -- initialized aggregate for a record type.
1571 -- Has_SP_Choice (Flag15-Sem)
1572 -- Present in all nodes containing a Discrete_Choices field (N_Variant,
1573 -- N_Case_Expression_Alternative, N_Case_Statement_Alternative). Set to
1574 -- True if the Discrete_Choices list has at least one occurrence of a
1575 -- statically predicated subtype.
1577 -- Has_Storage_Size_Pragma (Flag5-Sem)
1578 -- A flag present in an N_Task_Definition node to flag the presence of a
1579 -- Storage_Size pragma.
1581 -- Has_Target_Names (Flag8-Sem)
1582 -- Present in assignment statements. Indicates that the RHS contains
1583 -- target names (see AI12-0125-3) and must be expanded accordingly.
1585 -- Has_Wide_Character (Flag11-Sem)
1586 -- Present in string literals, set if any wide character (i.e. character
1587 -- code outside the Character range but within Wide_Character range)
1588 -- appears in the string. Used to implement pragma preference rules.
1590 -- Has_Wide_Wide_Character (Flag13-Sem)
1591 -- Present in string literals, set if any wide character (i.e. character
1592 -- code outside the Wide_Character range) appears in the string. Used to
1593 -- implement pragma preference rules.
1595 -- Header_Size_Added (Flag11-Sem)
1596 -- Present in N_Attribute_Reference nodes, set only for attribute
1597 -- Max_Size_In_Storage_Elements. The flag indicates that the size of the
1598 -- hidden list header used by the runtime finalization support has been
1599 -- added to the size of the prefix. The flag also prevents the infinite
1600 -- expansion of the same attribute in the said context.
1602 -- Hidden_By_Use_Clause (Elist5-Sem)
1603 -- An entity list present in use clauses that appear within
1604 -- instantiations. For the resolution of local entities, entities
1605 -- introduced by these use clauses have priority over global ones,
1606 -- and outer entities must be explicitly hidden/restored on exit.
1608 -- Implicit_With (Flag16-Sem)
1609 -- Present in N_With_Clause nodes. The flag indicates that the clause
1610 -- does not comes from source and introduces an implicit dependency on
1611 -- a particular unit. Such implicit with clauses are generated by:
1613 -- * ABE mechanism - The static elaboration model of both the default
1614 -- and the legacy ABE mechanism use with clauses to encode implicit
1615 -- Elaborate[_All] pragmas.
1617 -- * Analysis - A with clause for child unit A.B.C is equivalent to
1618 -- a series of clauses that with A, A.B, and A.B.C. Manipulation of
1619 -- contexts utilizes implicit with clauses to emulate the visibility
1620 -- of a particular unit.
1622 -- * RTSfind - The compiler generates code which references entities
1623 -- from the runtime.
1625 -- Import_Interface_Present (Flag16-Sem)
1626 -- This flag is set in an Interface or Import pragma if a matching
1627 -- pragma of the other kind is also present. This is used to avoid
1628 -- generating some unwanted error messages.
1630 -- Includes_Infinities (Flag11-Sem)
1631 -- This flag is present in N_Range nodes. It is set for the range of
1632 -- unconstrained float types defined in Standard, which include not only
1633 -- the given range of values, but also legitimately can include infinite
1634 -- values. This flag is false for any float type for which an explicit
1635 -- range is given by the programmer, even if that range is identical to
1636 -- the range for Float.
1638 -- Incomplete_View (Node2-Sem)
1639 -- Present in full type declarations that are completions of incomplete
1640 -- type declarations. Denotes the corresponding incomplete type
1641 -- declaration. Used to simplify the retrieval of primitive operations
1642 -- that may be declared between the partial and the full view of an
1645 -- Inherited_Discriminant (Flag13-Sem)
1646 -- This flag is present in N_Component_Association nodes. It indicates
1647 -- that a given component association in an extension aggregate is the
1648 -- value obtained from a constraint on an ancestor. Used to prevent
1649 -- double expansion when the aggregate has expansion delayed.
1651 -- Instance_Spec (Node5-Sem)
1652 -- This field is present in generic instantiation nodes, and also in
1653 -- formal package declaration nodes (formal package declarations are
1654 -- treated in a manner very similar to package instantiations). It points
1655 -- to the node for the spec of the instance, inserted as part of the
1656 -- semantic processing for instantiations in Sem_Ch12.
1658 -- Is_Abort_Block (Flag4-Sem)
1659 -- Present in N_Block_Statement nodes. True if the block protects a list
1660 -- of statements with an Abort_Defer / Abort_Undefer_Direct pair.
1662 -- Is_Accessibility_Actual (Flag13-Sem)
1663 -- Present in N_Parameter_Association nodes. True if the parameter is
1664 -- an extra actual that carries the accessibility level of the actual
1665 -- for an access parameter, in a function that dispatches on result and
1666 -- is called in a dispatching context. Used to prevent a formal/actual
1667 -- mismatch when the call is rewritten as a dispatching call.
1669 -- Is_Analyzed_Pragma (Flag5-Sem)
1670 -- Present in N_Pragma nodes. Set for delayed pragmas that require a two
1671 -- step analysis. The initial step is peformed by routine Analyze_Pragma
1672 -- and verifies the overall legality of the pragma. The second step takes
1673 -- place in the various Analyze_xxx_In_Decl_Part routines which perform
1674 -- full analysis. The flag prevents the reanalysis of a delayed pragma.
1676 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1677 -- A flag set in a Block_Statement node to indicate that it is the
1678 -- expansion of an asynchronous entry call. Such a block needs cleanup
1679 -- handler to assure that the call is cancelled.
1681 -- Is_Boolean_Aspect (Flag16-Sem)
1682 -- Present in N_Aspect_Specification node. Set if the aspect is for a
1683 -- boolean aspect (i.e. Aspect_Id is in Boolean_Aspect subtype).
1685 -- Is_Checked (Flag11-Sem)
1686 -- Present in N_Aspect_Specification and N_Pragma nodes. Set for an
1687 -- assertion aspect or pragma, or check pragma for an assertion, that
1688 -- is to be checked at run time. If either Is_Checked or Is_Ignored
1689 -- is set (they cannot both be set), then this means that the status of
1690 -- the pragma has been checked at the appropriate point and should not
1691 -- be further modified (in some cases these flags are copied when a
1692 -- pragma is rewritten).
1694 -- Is_Checked_Ghost_Pragma (Flag3-Sem)
1695 -- This flag is present in N_Pragma nodes. It is set when the pragma is
1696 -- related to a checked Ghost entity or encloses a checked Ghost entity.
1697 -- This flag has no relation to Is_Checked.
1699 -- Is_Component_Left_Opnd (Flag13-Sem)
1700 -- Is_Component_Right_Opnd (Flag14-Sem)
1701 -- Present in concatenation nodes, to indicate that the corresponding
1702 -- operand is of the component type of the result. Used in resolving
1703 -- concatenation nodes in instances.
1705 -- Is_Controlling_Actual (Flag16-Sem)
1706 -- This flag is set on an expression that is a controlling argument in
1707 -- a dispatching call. It is off in all other cases. See Sem_Disp for
1708 -- details of its use.
1710 -- Is_Declaration_Level_Node (Flag5-Sem)
1711 -- Present in call marker and instantiation nodes. Set when the constuct
1712 -- appears within the declarations of a block statement, an entry body,
1713 -- a subprogram body, or a task body. The flag aids the ABE Processing
1714 -- phase to catch certain forms of guaranteed ABEs.
1716 -- Is_Delayed_Aspect (Flag14-Sem)
1717 -- Present in N_Pragma and N_Attribute_Definition_Clause nodes which
1718 -- come from aspect specifications, where the evaluation of the aspect
1719 -- must be delayed to the freeze point. This flag is also set True in
1720 -- the corresponding N_Aspect_Specification node.
1722 -- Is_Disabled (Flag15-Sem)
1723 -- A flag set in an N_Aspect_Specification or N_Pragma node if there was
1724 -- a Check_Policy or Assertion_Policy (or in the case of a Debug_Pragma)
1725 -- a Debug_Policy pragma that resulted in totally disabling the flagged
1726 -- aspect or policy as a result of using the GNAT-defined policy DISABLE.
1727 -- If this flag is set, the aspect or policy is not analyzed for semantic
1728 -- correctness, so any expressions etc will not be marked as analyzed.
1730 -- Is_Dispatching_Call (Flag6-Sem)
1731 -- Present in call marker nodes. Set when the related call which prompted
1732 -- the creation of the marker is dispatching.
1734 -- Is_Dynamic_Coextension (Flag18-Sem)
1735 -- Present in allocator nodes, to indicate that this is an allocator
1736 -- for an access discriminant of a dynamically allocated object. The
1737 -- coextension must be deallocated and finalized at the same time as
1738 -- the enclosing object. The partner flag Is_Static_Coextension must
1739 -- be cleared before setting this flag to True.
1741 -- Is_Effective_Use_Clause (Flag1-Sem)
1742 -- Present in both N_Use_Type_Clause and N_Use_Package_Clause to indicate
1743 -- a use clause is "used" in the current source.
1745 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
1746 -- Present in the following nodes:
1748 -- assignment statement
1749 -- attribute reference
1751 -- entry call statement
1754 -- function instantiation
1756 -- package instantiation
1757 -- procedure call statement
1758 -- procedure instantiation
1759 -- requeue statement
1760 -- variable reference marker
1762 -- Set when the node appears within a context which allows the generation
1763 -- of run-time ABE checks. This flag detemines whether the ABE Processing
1764 -- phase generates conditional ABE checks and guaranteed ABE failures.
1766 -- Is_Elaboration_Code (Flag9-Sem)
1767 -- Present in assignment statements. Set for an assignment which updates
1768 -- the elaboration flag of a package or subprogram when the corresponding
1769 -- body is successfully elaborated.
1771 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
1772 -- Present in the following nodes:
1774 -- attribute reference
1776 -- entry call statement
1779 -- function instantiation
1781 -- package instantiation
1782 -- procedure call statement
1783 -- procedure instantiation
1784 -- requeue statement
1785 -- variable reference marker
1787 -- Set when the node appears within a context where elaboration warnings
1788 -- are enabled. This flag determines whether the ABE processing phase
1789 -- generates diagnostics on various elaboration issues.
1791 -- Is_Entry_Barrier_Function (Flag8-Sem)
1792 -- This flag is set on N_Subprogram_Declaration and N_Subprogram_Body
1793 -- nodes which emulate the barrier function of a protected entry body.
1794 -- The flag is used when checking for incorrect use of Current_Task.
1796 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
1797 -- This flag is set in an N_Function_Call node to indicate that the extra
1798 -- actuals to support a build-in-place style of call have been added to
1801 -- Is_Expanded_Contract (Flag1-Sem)
1802 -- Present in N_Contract nodes. Set if the contract has already undergone
1803 -- expansion activities.
1805 -- Is_Finalization_Wrapper (Flag9-Sem)
1806 -- This flag is present in N_Block_Statement nodes. It is set when the
1807 -- block acts as a wrapper of a handled construct which has controlled
1808 -- objects. The wrapper prevents interference between exception handlers
1809 -- and At_End handlers.
1811 -- Is_Generic_Contract_Pragma (Flag2-Sem)
1812 -- This flag is present in N_Pragma nodes. It is set when the pragma is
1813 -- a source construct, applies to a generic unit or its body, and denotes
1814 -- one of the following contract-related annotations:
1818 -- Extensions_Visible
1820 -- Initial_Condition
1834 -- Is_Ignored (Flag9-Sem)
1835 -- A flag set in an N_Aspect_Specification or N_Pragma node if there was
1836 -- a Check_Policy or Assertion_Policy (or in the case of a Debug_Pragma)
1837 -- a Debug_Policy pragma that specified a policy of IGNORE, DISABLE, or
1838 -- OFF, for the pragma/aspect. If there was a Policy pragma specifying
1839 -- a Policy of ON or CHECK, then this flag is reset. If no Policy pragma
1840 -- gives a policy for the aspect or pragma, then there are two cases. For
1841 -- an assertion aspect or pragma (one of the assertion kinds allowed in
1842 -- an Assertion_Policy pragma), then Is_Ignored is set if assertions are
1843 -- ignored because of the absence of a -gnata switch. For any other
1844 -- aspects or pragmas, the flag is off. If this flag is set, the
1845 -- aspect/pragma is fully analyzed and checked for other syntactic
1846 -- and semantic errors, but it does not have any semantic effect.
1848 -- Is_Ignored_Ghost_Pragma (Flag8-Sem)
1849 -- This flag is present in N_Pragma nodes. It is set when the pragma is
1850 -- related to an ignored Ghost entity or encloses ignored Ghost entity.
1851 -- This flag has no relation to Is_Ignored.
1853 -- Is_In_Discriminant_Check (Flag11-Sem)
1854 -- This flag is present in a selected component, and is used to indicate
1855 -- that the reference occurs within a discriminant check. The
1856 -- significance is that optimizations based on assuming that the
1857 -- discriminant check has a correct value cannot be performed in this
1858 -- case (or the discriminant check may be optimized away).
1860 -- Is_Inherited_Pragma (Flag4-Sem)
1861 -- This flag is set in an N_Pragma node that appears in a N_Contract node
1862 -- to indicate that the pragma has been inherited from a parent context.
1864 -- Is_Initialization_Block (Flag1-Sem)
1865 -- Defined in block nodes. Set when the block statement was created by
1866 -- the finalization machinery to wrap initialization statements. This
1867 -- flag aids the ABE Processing phase to suppress the diagnostics of
1868 -- finalization actions in initialization contexts.
1870 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
1871 -- NOTE: this flag is shared between the legacy ABE mechanism and the
1872 -- default ABE mechanism.
1874 -- Present in the following nodes:
1877 -- formal package declaration
1879 -- function instantiation
1880 -- package instantiation
1881 -- procedure call statement
1882 -- procedure instantiation
1884 -- Set when the elaboration or evaluation of the scenario results in
1885 -- a guaranteed ABE. The flag is used to suppress the instantiation of
1886 -- generic bodies because gigi cannot handle certain forms of premature
1887 -- instantiation, as well as to prevent the reexamination of the node by
1888 -- the ABE Processing phase.
1890 -- Is_Machine_Number (Flag11-Sem)
1891 -- This flag is set in an N_Real_Literal node to indicate that the value
1892 -- is a machine number. This avoids some unnecessary cases of converting
1893 -- real literals to machine numbers.
1895 -- Is_Null_Loop (Flag16-Sem)
1896 -- This flag is set in an N_Loop_Statement node if the corresponding loop
1897 -- can be determined to be null at compile time. This is used to remove
1898 -- the loop entirely at expansion time.
1900 -- Is_OpenAcc_Environment (Flag13-Sem)
1901 -- This flag is set in an N_Loop_Statement node if it contains an
1902 -- Acc_Data, Acc_Parallel or Add_Kernels pragma.
1904 -- Is_OpenAcc_Loop (Flag14-Sem)
1905 -- This flag is set in an N_Loop_Statement node if it contains an
1906 -- OpenAcc_Loop pragma.
1908 -- Is_Overloaded (Flag5-Sem)
1909 -- A flag present in all expression nodes. Used temporarily during
1910 -- overloading determination. The setting of this flag is not relevant
1911 -- once overloading analysis is complete.
1913 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1914 -- A flag present only in N_Op_Expon nodes. It is set when the
1915 -- exponentiation is of the form 2 ** N, where the type of N is an
1916 -- unsigned integral subtype whose size does not exceed the size of
1917 -- Standard_Integer (i.e. a type that can be safely converted to
1918 -- Natural), and the exponentiation appears as the right operand of an
1919 -- integer multiplication or an integer division where the dividend is
1920 -- unsigned. It is also required that overflow checking is off for both
1921 -- the exponentiation and the multiply/divide node. If this set of
1922 -- conditions holds, and the flag is set, then the division or
1923 -- multiplication can be (and is) converted to a shift.
1925 -- Is_Prefixed_Call (Flag17-Sem)
1926 -- This flag is set in a selected component within a generic unit, if
1927 -- it resolves to a prefixed call to a primitive operation. The flag
1928 -- is used to prevent accidental overloadings in an instance, when a
1929 -- primitive operation and a private record component may be homographs.
1931 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1932 -- A flag set in a Subprogram_Body block to indicate that it is the
1933 -- implementation of a protected subprogram. Such a body needs cleanup
1934 -- handler to make sure that the associated protected object is unlocked
1935 -- when the subprogram completes.
1937 -- Is_Qualified_Universal_Literal (Flag4-Sem)
1938 -- Present in N_Qualified_Expression nodes. Set when the qualification is
1939 -- converting a universal literal to a specific type. Such qualifiers aid
1940 -- the resolution of accidental overloading of binary or unary operators
1941 -- which may occur in instances.
1943 -- Is_Read (Flag4-Sem)
1944 -- Present in variable reference markers. Set when the original variable
1945 -- reference constitues a read of the variable.
1947 -- Is_Source_Call (Flag4-Sem)
1948 -- Present in call marker nodes. Set when the related call came from
1951 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
1952 -- Present in the following nodes:
1954 -- assignment statement
1955 -- attribute reference
1957 -- entry call statement
1960 -- function instantiation
1962 -- package instantiation
1963 -- procedure call statement
1964 -- procedure instantiation
1965 -- requeue statement
1966 -- variable reference marker
1968 -- Set when the node appears within a context subject to SPARK_Mode On.
1969 -- This flag determines when the SPARK model of elaboration be activated
1970 -- by the ABE Processing phase.
1972 -- Is_Static_Coextension (Flag14-Sem)
1973 -- Present in N_Allocator nodes. Set if the allocator is a coextension
1974 -- of an object allocated on the stack rather than the heap. The partner
1975 -- flag Is_Dynamic_Coextension must be cleared before setting this flag
1978 -- Is_Static_Expression (Flag6-Sem)
1979 -- Indicates that an expression is a static expression according to the
1980 -- rules in RM-4.9. See Sem_Eval for details.
1982 -- Is_Subprogram_Descriptor (Flag16-Sem)
1983 -- Present in N_Object_Declaration, and set only for the object
1984 -- declaration generated for a subprogram descriptor in fast exception
1985 -- mode. See Exp_Ch11 for details of use.
1987 -- Is_Task_Allocation_Block (Flag6-Sem)
1988 -- A flag set in a Block_Statement node to indicate that it is the
1989 -- expansion of a task allocator, or the allocator of an object
1990 -- containing tasks. Such a block requires a cleanup handler to call
1991 -- Expunge_Unactivated_Tasks to complete any tasks that have been
1992 -- allocated but not activated when the allocator completes abnormally.
1994 -- Is_Task_Body_Procedure (Flag1-Sem)
1995 -- This flag is set on N_Subprogram_Declaration and N_Subprogram_Body
1996 -- nodes which emulate the body of a task unit.
1998 -- Is_Task_Master (Flag5-Sem)
1999 -- A flag set in a Subprogram_Body, Block_Statement, or Task_Body node to
2000 -- indicate that the construct is a task master (i.e. has declared tasks
2001 -- or declares an access to a task type).
2003 -- Is_Write (Flag5-Sem)
2004 -- Present in variable reference markers. Set when the original variable
2005 -- reference constitues a write of the variable.
2007 -- Itype (Node1-Sem)
2008 -- Used in N_Itype_Reference node to reference an itype for which it is
2009 -- important to ensure that it is defined. See description of this node
2010 -- for further details.
2012 -- Kill_Range_Check (Flag11-Sem)
2013 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
2014 -- result should not be subjected to range checks. This is used for the
2015 -- implementation of Normalize_Scalars.
2017 -- Label_Construct (Node2-Sem)
2018 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
2019 -- N_Block_Statement or N_Loop_Statement node to which the label
2020 -- declaration applies. This attribute is used both in the compiler and
2021 -- in the implementation of ASIS queries. The field is left empty for the
2022 -- special labels generated as part of expanding raise statements with a
2023 -- local exception handler.
2025 -- Library_Unit (Node4-Sem)
2026 -- In a stub node, Library_Unit points to the compilation unit node of
2027 -- the corresponding subunit.
2029 -- In a with clause node, Library_Unit points to the spec of the with'ed
2032 -- In a compilation unit node, the usage depends on the unit type:
2034 -- For a library unit body, Library_Unit points to the compilation unit
2035 -- node of the corresponding spec, unless it's a subprogram body with
2036 -- Acts_As_Spec set, in which case it points to itself.
2038 -- For a spec, Library_Unit points to the compilation unit node of the
2039 -- corresponding body, if present. The body will be present if the spec
2040 -- is or contains generics that we needed to instantiate. Similarly, the
2041 -- body will be present if we needed it for inlining purposes. Thus, if
2042 -- we have a spec/body pair, both of which are present, they point to
2043 -- each other via Library_Unit.
2045 -- For a subunit, Library_Unit points to the compilation unit node of
2047 -- ??? not (always) true, in (at least some, maybe all?) cases it points
2048 -- to the corresponding spec for the parent body.
2050 -- Note that this field is not used to hold the parent pointer for child
2051 -- unit (which might in any case need to use it for some other purpose as
2052 -- described above). Instead for a child unit, implicit with's are
2053 -- generated for all parents.
2055 -- Local_Raise_Statements (Elist1)
2056 -- This field is present in exception handler nodes. It is set to
2057 -- No_Elist in the normal case. If there is at least one raise statement
2058 -- which can potentially be handled as a local raise, then this field
2059 -- points to a list of raise nodes, which are calls to a routine to raise
2060 -- an exception. These are raise nodes which can be optimized into gotos
2061 -- if the handler turns out to meet the conditions which permit this
2062 -- transformation. Note that this does NOT include instances of the
2063 -- N_Raise_xxx_Error nodes since the transformation of these nodes is
2064 -- handled by the back end (using the N_Push/N_Pop mechanism).
2066 -- Loop_Actions (List2-Sem)
2067 -- A list present in Component_Association nodes in array aggregates.
2068 -- Used to collect actions that must be executed within the loop because
2069 -- they may need to be evaluated anew each time through.
2071 -- Limited_View_Installed (Flag18-Sem)
2072 -- Present in With_Clauses and in package specifications. If set on
2073 -- with_clause, it indicates that this clause has created the current
2074 -- limited view of the designated package. On a package specification, it
2075 -- indicates that the limited view has already been created because the
2076 -- package is mentioned in a limited_with_clause in the closure of the
2077 -- unit being compiled.
2079 -- Local_Raise_Not_OK (Flag7-Sem)
2080 -- Present in N_Exception_Handler nodes. Set if the handler contains
2081 -- a construct (reraise statement, or call to subprogram in package
2082 -- GNAT.Current_Exception) that makes the handler unsuitable as a target
2083 -- for a local raise (one that could otherwise be converted to a goto).
2085 -- Must_Be_Byte_Aligned (Flag14-Sem)
2086 -- This flag is present in N_Attribute_Reference nodes. It can be set
2087 -- only for the Address and Unrestricted_Access attributes. If set it
2088 -- means that the object for which the address/access is given must be on
2089 -- a byte (more accurately a storage unit) boundary. If necessary, a copy
2090 -- of the object is to be made before taking the address (this copy is in
2091 -- the current scope on the stack frame). This is used for certain cases
2092 -- of code generated by the expander that passes parameters by address.
2094 -- The reason the copy is not made by the front end is that the back end
2095 -- has more information about type layout and may be able to (but is not
2096 -- guaranteed to) prevent making unnecessary copies.
2098 -- Must_Not_Freeze (Flag8-Sem)
2099 -- A flag present in all expression nodes. Normally expressions cause
2100 -- freezing as described in the RM. If this flag is set, then this is
2101 -- inhibited. This is used by the analyzer and expander to label nodes
2102 -- that are created by semantic analysis or expansion and which must not
2103 -- cause freezing even though they normally would. This flag is also
2104 -- present in an N_Subtype_Indication node, since we also use these in
2105 -- calls to Freeze_Expression.
2107 -- Next_Entity (Node2-Sem)
2108 -- Present in defining identifiers, defining character literals, and
2109 -- defining operator symbols (i.e. in all entities). The entities of a
2110 -- scope are chained, and this field is used as the forward pointer for
2111 -- this list. See Einfo for further details.
2113 -- Next_Exit_Statement (Node3-Sem)
2114 -- Present in N_Exit_Statement nodes. The exit statements for a loop are
2115 -- chained (in reverse order of appearance) from the First_Exit_Statement
2116 -- field of the E_Loop entity for the loop. Next_Exit_Statement points to
2117 -- the next entry on this chain (Empty = end of list).
2119 -- Next_Implicit_With (Node3-Sem)
2120 -- Present in N_With_Clause. Part of a chain of with_clauses generated
2121 -- in rtsfind to indicate implicit dependencies on predefined units. Used
2122 -- to prevent multiple with_clauses for the same unit in a given context.
2123 -- A postorder traversal of the tree whose nodes are units and whose
2124 -- links are with_clauses defines the order in which CodePeer must
2125 -- examine a compiled unit and its full context. This ordering ensures
2126 -- that any subprogram call is examined after the subprogram declaration
2129 -- Next_Named_Actual (Node4-Sem)
2130 -- Present in parameter association nodes. Set during semantic analysis
2131 -- to point to the next named parameter, where parameters are ordered by
2132 -- declaration order (as opposed to the actual order in the call, which
2133 -- may be different due to named associations). Not that this field
2134 -- points to the explicit actual parameter itself, not to the
2135 -- N_Parameter_Association node (its parent).
2137 -- Next_Pragma (Node1-Sem)
2138 -- Present in N_Pragma nodes. Used to create a linked list of pragma
2139 -- nodes. Currently used for two purposes:
2141 -- Create a list of linked Check_Policy pragmas. The head of this list
2142 -- is stored in Opt.Check_Policy_List (which has further details).
2144 -- Used by processing for Pre/Postcondition pragmas to store a list of
2145 -- pragmas associated with the spec of a subprogram (see Sem_Prag for
2148 -- Used by processing for pragma SPARK_Mode to store multiple pragmas
2149 -- the apply to the same construct. These are visible/private mode for
2150 -- a package spec and declarative/statement mode for package body.
2152 -- Next_Rep_Item (Node5-Sem)
2153 -- Present in pragma nodes, attribute definition nodes, enumeration rep
2154 -- clauses, record rep clauses, aspect specification nodes. Used to link
2155 -- representation items that apply to an entity. See full description of
2156 -- First_Rep_Item field in Einfo for further details.
2158 -- Next_Use_Clause (Node3-Sem)
2159 -- While use clauses are active during semantic processing, they are
2160 -- chained from the scope stack entry, using Next_Use_Clause as a link
2161 -- pointer, with Empty marking the end of the list. The head pointer is
2162 -- in the scope stack entry (First_Use_Clause). At the end of semantic
2163 -- processing (i.e. when Gigi sees the tree, the contents of this field
2164 -- is undefined and should not be read).
2166 -- No_Ctrl_Actions (Flag7-Sem)
2167 -- Present in N_Assignment_Statement to indicate that no Finalize nor
2168 -- Adjust should take place on this assignment even though the RHS is
2169 -- controlled. Also indicates that the primitive _assign should not be
2170 -- used for a tagged assignment. This is used in init procs and aggregate
2171 -- expansions where the generated assignments are initializations, not
2172 -- real assignments.
2174 -- No_Elaboration_Check (Flag4-Sem)
2175 -- NOTE: this flag is relevant only for the legacy ABE mechanism and
2176 -- should not be used outside of that context.
2178 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
2179 -- that no elaboration check is needed on the call, because it appears in
2180 -- the context of a local Suppress pragma. This is used on calls within
2181 -- task bodies, where the actual elaboration checks are applied after
2182 -- analysis, when the local scope stack is not present
2184 -- No_Entities_Ref_In_Spec (Flag8-Sem)
2185 -- Present in N_With_Clause nodes. Set if the with clause is on the
2186 -- package or subprogram spec where the main unit is the corresponding
2187 -- body, and no entities of the with'ed unit are referenced by the spec
2188 -- (an entity may still be referenced in the body, so this flag is used
2189 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
2192 -- No_Initialization (Flag13-Sem)
2193 -- Present in N_Object_Declaration and N_Allocator to indicate that the
2194 -- object must not be initialized (by Initialize or call to an init
2195 -- proc). This is needed for controlled aggregates. When the Object
2196 -- declaration has an expression, this flag means that this expression
2197 -- should not be taken into account (needed for in place initialization
2198 -- with aggregates, and for object with an address clause, which are
2199 -- initialized with an assignment at freeze time).
2201 -- No_Minimize_Eliminate (Flag17-Sem)
2202 -- This flag is present in membership operator nodes (N_In/N_Not_In).
2203 -- It is used to indicate that processing for extended overflow checking
2204 -- modes is not required (this is used to prevent infinite recursion).
2206 -- No_Side_Effect_Removal (Flag17-Sem)
2207 -- Present in N_Function_Call nodes. Set when a function call does not
2208 -- require side effect removal. This attribute suppresses the generation
2209 -- of a temporary to capture the result of the function which eventually
2210 -- replaces the function call.
2212 -- No_Truncation (Flag17-Sem)
2213 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
2214 -- only if the RM_Size of the source is greater than the RM_Size of the
2215 -- target for scalar operands. Normally in such a case we truncate some
2216 -- higher order bits of the source, and then sign/zero extend the result
2217 -- to form the output value. But if this flag is set, then we do not do
2218 -- any truncation, so for example, if an 8 bit input is converted to 5
2219 -- bit result which is in fact stored in 8 bits, then the high order
2220 -- three bits of the target result will be copied from the source. This
2221 -- is used for properly setting out of range values for use by pragmas
2222 -- Initialize_Scalars and Normalize_Scalars.
2224 -- Null_Excluding_Subtype (Flag16)
2225 -- Present in N_Access_To_Object_Definition. Indicates that the subtype
2226 -- indication carries a null-exclusion indicator, which is distinct from
2227 -- the null-exclusion indicator that may precede the access keyword.
2229 -- Original_Discriminant (Node2-Sem)
2230 -- Present in identifiers. Used in references to discriminants that
2231 -- appear in generic units. Because the names of the discriminants may be
2232 -- different in an instance, we use this field to recover the position of
2233 -- the discriminant in the original type, and replace it with the
2234 -- discriminant at the same position in the instantiated type.
2236 -- Original_Entity (Node2-Sem)
2237 -- Present in numeric literals. Used to denote the named number that has
2238 -- been constant-folded into the given literal. If literal is from
2239 -- source, or the result of some other constant-folding operation, then
2240 -- Original_Entity is empty. This field is needed to handle properly
2241 -- named numbers in generic units, where the Associated_Node field
2242 -- interferes with the Entity field, making it impossible to preserve the
2243 -- original entity at the point of instantiation (ASIS problem).
2245 -- Others_Discrete_Choices (List1-Sem)
2246 -- When a case statement or variant is analyzed, the semantic checks
2247 -- determine the actual list of choices that correspond to an others
2248 -- choice. This list is materialized for later use by the expander and
2249 -- the Others_Discrete_Choices field of an N_Others_Choice node points to
2250 -- this materialized list of choices, which is in standard format for a
2251 -- list of discrete choices, except that of course it cannot contain an
2252 -- N_Others_Choice entry.
2254 -- Parent_Spec (Node4-Sem)
2255 -- For a library unit that is a child unit spec (package or subprogram
2256 -- declaration, generic declaration or instantiation, or library level
2257 -- rename) this field points to the compilation unit node for the parent
2258 -- package specification. This field is Empty for library bodies (the
2259 -- parent spec in this case can be found from the corresponding spec).
2261 -- Parent_With (Flag1-Sem)
2262 -- Present in N_With_Clause nodes. The flag indicates that the clause
2263 -- was generated for an ancestor unit to provide proper visibility. A
2264 -- with clause for child unit A.B.C produces two implicit parent with
2265 -- clauses for A and A.B.
2267 -- Premature_Use (Node5-Sem)
2268 -- Present in N_Incomplete_Type_Declaration node. Used for improved
2269 -- error diagnostics: if there is a premature usage of an incomplete
2270 -- type, a subsequently generated error message indicates the position
2271 -- of its full declaration.
2273 -- Present_Expr (Uint3-Sem)
2274 -- Present in an N_Variant node. This has a meaningful value only after
2275 -- Gigi has back annotated the tree with representation information. At
2276 -- this point, it contains a reference to a gcc expression that depends
2277 -- on the values of one or more discriminants. Give a set of discriminant
2278 -- values, this expression evaluates to False (zero) if variant is not
2279 -- present, and True (non-zero) if it is present. See unit Repinfo for
2280 -- further details on gigi back annotation. This field is used during
2281 -- ASIS processing (data decomposition annex) to determine if a field is
2284 -- Prev_Use_Clause (Node1-Sem)
2285 -- Present in both N_Use_Package_Clause and N_Use_Type_Clause. Used in
2286 -- detection of ineffective use clauses by allowing a chain of related
2287 -- clauses together to avoid traversing the current scope stack.
2289 -- Print_In_Hex (Flag13-Sem)
2290 -- Set on an N_Integer_Literal node to indicate that the value should be
2291 -- printed in hexadecimal in the sprint listing. Has no effect on
2292 -- legality or semantics of program, only on the displayed output. This
2293 -- is used to clarify output from the packed array cases.
2295 -- Procedure_To_Call (Node2-Sem)
2296 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
2297 -- and N_Extended_Return_Statement nodes. References the entity for the
2298 -- declaration of the procedure to be called to accomplish the required
2299 -- operation (i.e. for the Allocate procedure in the case of N_Allocator
2300 -- and N_Simple_Return_Statement and N_Extended_Return_Statement (for
2301 -- allocating the return value), and for the Deallocate procedure in the
2302 -- case of N_Free_Statement.
2304 -- Raises_Constraint_Error (Flag7-Sem)
2305 -- Set on an expression whose evaluation will definitely fail constraint
2306 -- error check. See Sem_Eval for details.
2308 -- Redundant_Use (Flag13-Sem)
2309 -- Present in nodes that can appear as an operand in a use clause or use
2310 -- type clause (identifiers, expanded names, attribute references). Set
2311 -- to indicate that a use is redundant (and therefore need not be undone
2314 -- Renaming_Exception (Node2-Sem)
2315 -- Present in N_Exception_Declaration node. Used to point back to the
2316 -- exception renaming for an exception declared within a subprogram.
2317 -- What happens is that an exception declared in a subprogram is moved
2318 -- to the library level with a unique name, and the original exception
2319 -- becomes a renaming. This link from the library level exception to the
2320 -- renaming declaration allows registering of the proper exception name.
2322 -- Return_Statement_Entity (Node5-Sem)
2323 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement.
2324 -- Points to an E_Return_Statement representing the return statement.
2326 -- Return_Object_Declarations (List3)
2327 -- Present in N_Extended_Return_Statement. Points to a list initially
2328 -- containing a single N_Object_Declaration representing the return
2329 -- object. We use a list (instead of just a pointer to the object decl)
2330 -- because Analyze wants to insert extra actions on this list.
2332 -- Rounded_Result (Flag18-Sem)
2333 -- Present in N_Type_Conversion, N_Op_Divide, and N_Op_Multiply nodes.
2334 -- Used in the fixed-point cases to indicate that the result must be
2335 -- rounded as a result of the use of the 'Round attribute. Also used for
2336 -- integer N_Op_Divide nodes to indicate that the result should be
2337 -- rounded to the nearest integer (breaking ties away from zero), rather
2338 -- than truncated towards zero as usual. These rounded integer operations
2339 -- are the result of expansion of rounded fixed-point divide, conversion
2340 -- and multiplication operations.
2342 -- Save_Invocation_Graph_Of_Body (Flag1-Sem)
2343 -- Present in compilation unit nodes. Set when the elaboration mechanism
2344 -- must record all invocation constructs and invocation relations within
2345 -- the body of the compilation unit.
2347 -- SCIL_Entity (Node4-Sem)
2348 -- Present in SCIL nodes. References the specific tagged type associated
2349 -- with the SCIL node (for an N_SCIL_Dispatching_Call node, this is
2350 -- the controlling type of the call; for an N_SCIL_Membership_Test node
2351 -- generated as part of testing membership in T'Class, this is T; for an
2352 -- N_SCIL_Dispatch_Table_Tag_Init node, this is the type being declared).
2354 -- SCIL_Controlling_Tag (Node5-Sem)
2355 -- Present in N_SCIL_Dispatching_Call nodes. References the controlling
2356 -- tag of a dispatching call. This is usually an N_Selected_Component
2357 -- node (for a _tag component), but may be an N_Object_Declaration or
2358 -- N_Parameter_Specification node in some cases (e.g., for a call to
2359 -- a classwide streaming operation or a call to an instance of
2360 -- Ada.Tags.Generic_Dispatching_Constructor).
2362 -- SCIL_Tag_Value (Node5-Sem)
2363 -- Present in N_SCIL_Membership_Test nodes. Used to reference the tag
2364 -- of the value that is being tested.
2366 -- SCIL_Target_Prim (Node2-Sem)
2367 -- Present in N_SCIL_Dispatching_Call nodes. References the primitive
2368 -- operation named (statically) in a dispatching call.
2370 -- Scope (Node3-Sem)
2371 -- Present in defining identifiers, defining character literals, and
2372 -- defining operator symbols (i.e. in all entities). The entities of a
2373 -- scope all use this field to reference the corresponding scope entity.
2374 -- See Einfo for further details.
2376 -- Shift_Count_OK (Flag4-Sem)
2377 -- A flag present in shift nodes to indicate that the shift count is
2378 -- known to be in range, i.e. is in the range from zero to word length
2379 -- minus one. If this flag is not set, then the shift count may be
2380 -- outside this range, i.e. larger than the word length, and the code
2381 -- must ensure that such shift counts give the appropriate result.
2383 -- Source_Type (Node1-Sem)
2384 -- Used in an N_Validate_Unchecked_Conversion node to point to the
2385 -- source type entity for the unchecked conversion instantiation
2386 -- which gigi must do size validation for.
2388 -- Split_PPC (Flag17)
2389 -- When a Pre or Post aspect specification is processed, it is broken
2390 -- into AND THEN sections. The leftmost section has Split_PPC set to
2391 -- False, indicating that it is the original specification (e.g. for
2392 -- posting errors). For other sections, Split_PPC is set to True.
2393 -- This flag is set in both the N_Aspect_Specification node itself,
2394 -- and in the pragma which is generated from this node.
2396 -- Storage_Pool (Node1-Sem)
2397 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
2398 -- and N_Extended_Return_Statement nodes. References the entity for the
2399 -- storage pool to be used for the allocate or free call or for the
2400 -- allocation of the returned value from function. Empty indicates that
2401 -- the global default pool is to be used. Note that in the case
2402 -- of a return statement, this field is set only if the function returns
2403 -- value of a type whose size is not known at compile time on the
2406 -- Suppress_Assignment_Checks (Flag18-Sem)
2407 -- Used in generated N_Assignment_Statement nodes to suppress predicate
2408 -- and range checks in cases where the generated code knows that the
2409 -- value being assigned is in range and satisfies any predicate. Also
2410 -- can be set in N_Object_Declaration nodes, to similarly suppress any
2411 -- checks on the initializing value. In assignment statements it also
2412 -- suppresses access checks in the generated code for out- and in-out
2413 -- parameters in entry calls.
2415 -- Suppress_Loop_Warnings (Flag17-Sem)
2416 -- Used in N_Loop_Statement node to indicate that warnings within the
2417 -- body of the loop should be suppressed. This is set when the range
2418 -- of a FOR loop is known to be null, or is probably null (loop would
2419 -- only execute if invalid values are present).
2421 -- Target (Node1-Sem)
2422 -- Present in call and variable reference marker nodes. References the
2423 -- entity of the original entity, operator, or subprogram being invoked,
2424 -- or the original variable being read or written.
2426 -- Target_Type (Node2-Sem)
2427 -- Used in an N_Validate_Unchecked_Conversion node to point to the target
2428 -- type entity for the unchecked conversion instantiation which gigi must
2429 -- do size validation for.
2431 -- Then_Actions (List3-Sem)
2432 -- This field is present in if expression nodes. During code expansion
2433 -- we use the Insert_Actions procedure (in Exp_Util) to insert actions
2434 -- at an appropriate place in the tree to get elaborated at the right
2435 -- time. For if expressions, we have to be sure that the actions for
2436 -- for the Then branch are only elaborated if the condition is True.
2437 -- The Then_Actions field is used as a temporary parking place for
2438 -- these actions. The final tree is always rewritten to eliminate the
2439 -- need for this field, so in the tree passed to Gigi, this field is
2440 -- always set to No_List.
2442 -- Treat_Fixed_As_Integer (Flag14-Sem)
2443 -- This flag appears in operator nodes for divide, multiply, mod, and rem
2444 -- on fixed-point operands. It indicates that the operands are to be
2445 -- treated as integer values, ignoring small values. This flag is only
2446 -- set as a result of expansion of fixed-point operations. Typically a
2447 -- fixed-point multiplication in the source generates subsidiary
2448 -- multiplication and division operations that work with the underlying
2449 -- integer values and have this flag set. Note that this flag is not
2450 -- needed on other arithmetic operations (add, neg, subtract etc.) since
2451 -- in these cases it is always the case that fixed is treated as integer.
2452 -- The Etype field MUST be set if this flag is set. The analyzer knows to
2453 -- leave such nodes alone, and whoever makes them must set the correct
2456 -- TSS_Elist (Elist3-Sem)
2457 -- Present in N_Freeze_Entity nodes. Holds an element list containing
2458 -- entries for each TSS (type support subprogram) associated with the
2459 -- frozen type. The elements of the list are the entities for the
2460 -- subprograms (see package Exp_TSS for further details). Set to No_Elist
2461 -- if there are no type support subprograms for the type or if the freeze
2462 -- node is not for a type.
2464 -- Uneval_Old_Accept (Flag7-Sem)
2465 -- Present in N_Pragma nodes. Set True if Opt.Uneval_Old is set to 'A'
2466 -- (accept) at the point where the pragma is encountered (including the
2467 -- case of a pragma generated from an aspect specification). It is this
2468 -- setting that is relevant, rather than the setting at the point where
2469 -- a contract is finally analyzed after the delay till the freeze point.
2471 -- Uneval_Old_Warn (Flag18-Sem)
2472 -- Present in N_Pragma nodes. Set True if Opt.Uneval_Old is set to 'W'
2473 -- (warn) at the point where the pragma is encountered (including the
2474 -- case of a pragma generated from an aspect specification). It is this
2475 -- setting that is relevant, rather than the setting at the point where
2476 -- a contract is finally analyzed after the delay till the freeze point.
2478 -- Unreferenced_In_Spec (Flag7-Sem)
2479 -- Present in N_With_Clause nodes. Set if the with clause is on the
2480 -- package or subprogram spec where the main unit is the corresponding
2481 -- body, and is not referenced by the spec (it may still be referenced by
2482 -- the body, so this flag is used to generate the proper message (see
2483 -- Sem_Util.Check_Unused_Withs for details)
2485 -- Uninitialized_Variable (Node3-Sem)
2486 -- Present in N_Formal_Private_Type_Definition and in N_Private_
2487 -- Extension_Declarations. Indicates that a variable in a generic unit
2488 -- whose type is a formal private or derived type is read without being
2489 -- initialized. Used to warn if the corresponding actual type is not
2490 -- a fully initialized type.
2492 -- Used_Operations (Elist2-Sem)
2493 -- Present in N_Use_Type_Clause nodes. Holds the list of operations that
2494 -- are made potentially use-visible by the clause. Simplifies processing
2495 -- on exit from the scope of the use_type_clause, in particular in the
2496 -- case of Use_All_Type, when those operations several scopes.
2498 -- Was_Attribute_Reference (Flag2-Sem)
2499 -- Present in N_Subprogram_Body. Set to True if the original source is an
2500 -- attribute reference which is an actual in a generic instantiation. The
2501 -- instantiation prologue renames these attributes, and expansion later
2502 -- converts them into subprogram bodies.
2504 -- Was_Expression_Function (Flag18-Sem)
2505 -- Present in N_Subprogram_Body. True if the original source had an
2506 -- N_Expression_Function, which was converted to the N_Subprogram_Body
2507 -- by Analyze_Expression_Function. This is needed by ASIS to correctly
2508 -- recreate the expression function (for the instance body) when the
2509 -- completion of a generic function declaration is an expression
2512 -- Was_Originally_Stub (Flag13-Sem)
2513 -- This flag is set in the node for a proper body that replaces stub.
2514 -- During the analysis procedure, stubs in some situations get rewritten
2515 -- by the corresponding bodies, and we set this flag to remember that
2516 -- this happened. Note that it is not good enough to rely on the use of
2517 -- Original_Node here because of the case of nested instantiations where
2518 -- the substituted node can be copied.
2520 --------------------------------------------------
2521 -- Note on Use of End_Label and End_Span Fields --
2522 --------------------------------------------------
2524 -- Several constructs have end lines:
2526 -- Loop Statement end loop [loop_IDENTIFIER];
2527 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
2528 -- Task Definition end [task_IDENTIFIER]
2529 -- Protected Definition end [protected_IDENTIFIER]
2530 -- Protected Body end [protected_IDENTIFIER]
2532 -- Block Statement end [block_IDENTIFIER];
2533 -- Subprogram Body end [DESIGNATOR];
2534 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
2535 -- Task Body end [task_IDENTIFIER];
2536 -- Accept Statement end [entry_IDENTIFIER]];
2537 -- Entry Body end [entry_IDENTIFIER];
2539 -- If Statement end if;
2540 -- Case Statement end case;
2542 -- Record Definition end record;
2543 -- Enumeration Definition );
2545 -- The End_Label and End_Span fields are used to mark the locations of
2546 -- these lines, and also keep track of the label in the case where a label
2549 -- For the first group above, the End_Label field of the corresponding node
2550 -- is used to point to the label identifier. In the case where there is no
2551 -- label in the source, the parser supplies a dummy identifier (with
2552 -- Comes_From_Source set to False), and the Sloc of this dummy identifier
2553 -- marks the location of the token following the END token.
2555 -- For the second group, the use of End_Label is similar, but the End_Label
2556 -- is found in the N_Handled_Sequence_Of_Statements node. This is done
2557 -- simply because in some cases there is no room in the parent node.
2559 -- For the third group, there is never any label, and instead of using
2560 -- End_Label, we use the End_Span field which gives the location of the
2561 -- token following END, relative to the starting Sloc of the construct,
2562 -- i.e. add Sloc (Node) + End_Span (Node) to get the Sloc of the IF or CASE
2563 -- following the End_Label.
2565 -- The record definition case is handled specially, we treat it as though
2566 -- it required an optional label which is never present, and so the parser
2567 -- always builds a dummy identifier with Comes From Source set False. The
2568 -- reason we do this, rather than using End_Span in this case, is that we
2569 -- want to generate a cross-ref entry for the end of a record, since it
2570 -- represents a scope for name declaration purposes.
2572 -- The enumeration definition case is handled in an exactly similar manner,
2573 -- building a dummy identifier to get a cross-reference.
2575 -- Note: the reason we store the difference as a Uint, instead of storing
2576 -- the Source_Ptr value directly, is that Source_Ptr values cannot be
2577 -- distinguished from other types of values, and we count on all general
2578 -- use fields being self describing. To make things easier for clients,
2579 -- note that we provide function End_Location, and procedure
2580 -- Set_End_Location to allow access to the logical value (which is the
2581 -- Source_Ptr value for the end token).
2583 ---------------------
2584 -- Syntactic Nodes --
2585 ---------------------
2587 ---------------------
2588 -- 2.3 Identifier --
2589 ---------------------
2591 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
2592 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
2594 -- An IDENTIFIER shall not be a reserved word
2596 -- In the Ada grammar identifiers are the bottom level tokens which have
2597 -- very few semantics. Actual program identifiers are direct names. If
2598 -- we were being 100% honest with the grammar, then we would have a node
2599 -- called N_Direct_Name which would point to an identifier. However,
2600 -- that's too many extra nodes, so we just use the N_Identifier node
2601 -- directly as a direct name, and it contains the expression fields and
2602 -- Entity field that correspond to its use as a direct name. In those
2603 -- few cases where identifiers appear in contexts where they are not
2604 -- direct names (pragmas, pragma argument associations, attribute
2605 -- references and attribute definition clauses), the Chars field of the
2606 -- node contains the Name_Id for the identifier name.
2608 -- Note: in GNAT, a reserved word can be treated as an identifier in two
2609 -- cases. First, an incorrect use of a reserved word as an identifier is
2610 -- diagnosed and then treated as a normal identifier. Second, an
2611 -- attribute designator of the form of a reserved word (access, delta,
2612 -- digits, range) is treated as an identifier.
2614 -- Note: The set of letters that is permitted in an identifier depends
2615 -- on the character set in use. See package Csets for full details.
2618 -- Sloc points to identifier
2619 -- Chars (Name1) contains the Name_Id for the identifier
2620 -- Entity (Node4-Sem)
2621 -- Associated_Node (Node4-Sem)
2622 -- Original_Discriminant (Node2-Sem)
2623 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
2624 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
2625 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
2626 -- Has_Private_View (Flag11-Sem) (set in generic units)
2627 -- Redundant_Use (Flag13-Sem)
2628 -- Atomic_Sync_Required (Flag14-Sem)
2629 -- plus fields for expression
2631 --------------------------
2632 -- 2.4 Numeric Literal --
2633 --------------------------
2635 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
2637 ----------------------------
2638 -- 2.4.1 Decimal Literal --
2639 ----------------------------
2641 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
2643 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
2645 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
2647 -- Decimal literals appear in the tree as either integer literal nodes
2648 -- or real literal nodes, depending on whether a period is present.
2650 -- Note: literal nodes appear as a result of direct use of literals
2651 -- in the source program, and also as the result of evaluating
2652 -- expressions at compile time. In the latter case, it is possible
2653 -- to construct real literals that have no syntactic representation
2654 -- using the standard literal format. Such literals are listed by
2655 -- Sprint using the notation [numerator / denominator].
2657 -- Note: the value of an integer literal node created by the front end
2658 -- is never outside the range of values of the base type. However, it
2659 -- can be the case that the created value is outside the range of the
2660 -- particular subtype. This happens in the case of integer overflows
2661 -- with checks suppressed.
2663 -- N_Integer_Literal
2664 -- Sloc points to literal
2665 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
2666 -- has been constant-folded into its literal value.
2667 -- Intval (Uint3) contains integer value of literal
2668 -- Print_In_Hex (Flag13-Sem)
2669 -- plus fields for expression
2672 -- Sloc points to literal
2673 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
2674 -- has been constant-folded into its literal value.
2675 -- Realval (Ureal3) contains real value of literal
2676 -- Corresponding_Integer_Value (Uint4-Sem)
2677 -- Is_Machine_Number (Flag11-Sem)
2678 -- plus fields for expression
2680 --------------------------
2681 -- 2.4.2 Based Literal --
2682 --------------------------
2684 -- BASED_LITERAL ::=
2685 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
2689 -- BASED_NUMERAL ::=
2690 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
2692 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
2694 -- Based literals appear in the tree as either integer literal nodes
2695 -- or real literal nodes, depending on whether a period is present.
2697 ----------------------------
2698 -- 2.5 Character Literal --
2699 ----------------------------
2701 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
2703 -- N_Character_Literal
2704 -- Sloc points to literal
2705 -- Chars (Name1) contains the Name_Id for the identifier
2706 -- Char_Literal_Value (Uint2) contains the literal value
2707 -- Entity (Node4-Sem)
2708 -- Associated_Node (Node4-Sem)
2709 -- Has_Private_View (Flag11-Sem) set in generic units.
2710 -- plus fields for expression
2712 -- Note: the Entity field will be missing (set to Empty) for character
2713 -- literals whose type is Standard.Wide_Character or Standard.Character
2714 -- or a type derived from one of these two. In this case the character
2715 -- literal stands for its own coding. The reason we take this irregular
2716 -- short cut is to avoid the need to build lots of junk defining
2717 -- character literal nodes.
2719 -------------------------
2720 -- 2.6 String Literal --
2721 -------------------------
2723 -- STRING LITERAL ::= "{STRING_ELEMENT}"
2725 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
2726 -- single GRAPHIC_CHARACTER other than a quotation mark.
2728 -- Is_Folded_In_Parser is True if the parser created this literal by
2729 -- folding a sequence of "&" operators. For example, if the source code
2730 -- says "aaa" & "bbb" & "ccc", and this produces "aaabbbccc", the flag
2731 -- is set. This flag is needed because the parser doesn't know about
2732 -- visibility, so the folded result might be wrong, and semantic
2733 -- analysis needs to check for that.
2736 -- Sloc points to literal
2737 -- Strval (Str3) contains Id of string value
2738 -- Has_Wide_Character (Flag11-Sem)
2739 -- Has_Wide_Wide_Character (Flag13-Sem)
2740 -- Is_Folded_In_Parser (Flag4)
2741 -- plus fields for expression
2747 -- A COMMENT starts with two adjacent hyphens and extends up to the
2748 -- end of the line. A COMMENT may appear on any line of a program.
2750 -- Comments are skipped by the scanner and do not appear in the tree.
2751 -- It is possible to reconstruct the position of comments with respect
2752 -- to the elements of the tree by using the source position (Sloc)
2753 -- pointers that appear in every tree node.
2759 -- PRAGMA ::= pragma IDENTIFIER
2760 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
2762 -- Note that a pragma may appear in the tree anywhere a declaration
2763 -- or a statement may appear, as well as in some other situations
2764 -- which are explicitly documented.
2767 -- Sloc points to PRAGMA
2768 -- Next_Pragma (Node1-Sem)
2769 -- Pragma_Argument_Associations (List2) (set to No_List if none)
2770 -- Corresponding_Aspect (Node3-Sem) (set to Empty if not present)
2771 -- Pragma_Identifier (Node4)
2772 -- Next_Rep_Item (Node5-Sem)
2773 -- Is_Generic_Contract_Pragma (Flag2-Sem)
2774 -- Is_Checked_Ghost_Pragma (Flag3-Sem)
2775 -- Is_Inherited_Pragma (Flag4-Sem)
2776 -- Is_Analyzed_Pragma (Flag5-Sem)
2777 -- Class_Present (Flag6) set if from Aspect with 'Class
2778 -- Uneval_Old_Accept (Flag7-Sem)
2779 -- Is_Ignored_Ghost_Pragma (Flag8-Sem)
2780 -- Is_Ignored (Flag9-Sem)
2781 -- Is_Checked (Flag11-Sem)
2782 -- From_Aspect_Specification (Flag13-Sem)
2783 -- Is_Delayed_Aspect (Flag14-Sem)
2784 -- Is_Disabled (Flag15-Sem)
2785 -- Import_Interface_Present (Flag16-Sem)
2786 -- Split_PPC (Flag17) set if corresponding aspect had Split_PPC set
2787 -- Uneval_Old_Warn (Flag18-Sem)
2789 -- Note: we should have a section on what pragmas are passed on to
2790 -- the back end to be processed. This section should note that pragma
2791 -- Psect_Object is always converted to Common_Object, but there are
2792 -- undoubtedly many other similar notes required ???
2794 -- Note: utility functions Pragma_Name_Unmapped and Pragma_Name may be
2795 -- applied to pragma nodes to obtain the Chars or its mapped version.
2797 -- Note: if From_Aspect_Specification is set, then Sloc points to the
2798 -- aspect name, as does the Pragma_Identifier. In this case if the
2799 -- pragma has a local name argument (such as pragma Inline), it is
2800 -- resolved to point to the specific entity affected by the pragma.
2802 --------------------------------------
2803 -- 2.8 Pragma Argument Association --
2804 --------------------------------------
2806 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
2807 -- [pragma_argument_IDENTIFIER =>] NAME
2808 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
2810 -- In Ada 2012, there are two more possibilities:
2812 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
2813 -- [pragma_argument_ASPECT_MARK =>] NAME
2814 -- | [pragma_argument_ASPECT_MARK =>] EXPRESSION
2816 -- where the interesting allowed cases (which do not fit the syntax of
2817 -- the first alternative above) are
2819 -- ASPECT_MARK => Pre'Class |
2821 -- Type_Invariant'Class |
2824 -- We allow this special usage in all Ada modes, but it would be a
2825 -- pain to allow these aspects to pervade the pragma syntax, and the
2826 -- representation of pragma nodes internally. So what we do is to
2827 -- replace these ASPECT_MARK forms with identifiers whose name is one
2828 -- of the special internal names _Pre, _Post, or _Type_Invariant.
2830 -- We do a similar replacement of these Aspect_Mark forms in the
2831 -- Expression of a pragma argument association for the cases of
2832 -- the first arguments of any Check pragmas and Check_Policy pragmas
2834 -- N_Pragma_Argument_Association
2835 -- Sloc points to first token in association
2836 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
2837 -- Expression_Copy (Node2-Sem)
2838 -- Expression (Node3)
2840 ------------------------
2841 -- 2.9 Reserved Word --
2842 ------------------------
2844 -- Reserved words are parsed by the scanner, and returned as the
2845 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
2847 ----------------------------
2848 -- 3.1 Basic Declaration --
2849 ----------------------------
2851 -- BASIC_DECLARATION ::=
2852 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
2853 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
2854 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
2855 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
2856 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
2857 -- | GENERIC_INSTANTIATION
2859 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
2860 -- see further description in section on semantic nodes.
2862 -- Also, in the tree that is constructed, a pragma may appear
2863 -- anywhere that a declaration may appear.
2865 ------------------------------
2866 -- 3.1 Defining Identifier --
2867 ------------------------------
2869 -- DEFINING_IDENTIFIER ::= IDENTIFIER
2871 -- A defining identifier is an entity, which has additional fields
2872 -- depending on the setting of the Ekind field. These additional
2873 -- fields are defined (and access subprograms declared) in package
2876 -- Note: N_Defining_Identifier is an extended node whose fields are
2877 -- deliberately laid out to match the layout of fields in an ordinary
2878 -- N_Identifier node allowing for easy alteration of an identifier
2879 -- node into a defining identifier node. For details, see procedure
2880 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
2882 -- N_Defining_Identifier
2883 -- Sloc points to identifier
2884 -- Chars (Name1) contains the Name_Id for the identifier
2885 -- Next_Entity (Node2-Sem)
2886 -- Scope (Node3-Sem)
2887 -- Etype (Node5-Sem)
2889 -----------------------------
2890 -- 3.2.1 Type Declaration --
2891 -----------------------------
2893 -- TYPE_DECLARATION ::=
2894 -- FULL_TYPE_DECLARATION
2895 -- | INCOMPLETE_TYPE_DECLARATION
2896 -- | PRIVATE_TYPE_DECLARATION
2897 -- | PRIVATE_EXTENSION_DECLARATION
2899 ----------------------------------
2900 -- 3.2.1 Full Type Declaration --
2901 ----------------------------------
2903 -- FULL_TYPE_DECLARATION ::=
2904 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
2905 -- is TYPE_DEFINITION
2906 -- [ASPECT_SPECIFICATIONS];
2907 -- | TASK_TYPE_DECLARATION
2908 -- | PROTECTED_TYPE_DECLARATION
2910 -- The full type declaration node is used only for the first case. The
2911 -- second case (concurrent type declaration), is represented directly
2912 -- by a task type declaration or a protected type declaration.
2914 -- N_Full_Type_Declaration
2915 -- Sloc points to TYPE
2916 -- Defining_Identifier (Node1)
2917 -- Incomplete_View (Node2-Sem)
2918 -- Discriminant_Specifications (List4) (set to No_List if none)
2919 -- Type_Definition (Node3)
2920 -- Discr_Check_Funcs_Built (Flag11-Sem)
2922 ----------------------------
2923 -- 3.2.1 Type Definition --
2924 ----------------------------
2926 -- TYPE_DEFINITION ::=
2927 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
2928 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
2929 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
2930 -- | DERIVED_TYPE_DEFINITION | INTERFACE_TYPE_DEFINITION
2932 --------------------------------
2933 -- 3.2.2 Subtype Declaration --
2934 --------------------------------
2936 -- SUBTYPE_DECLARATION ::=
2937 -- subtype DEFINING_IDENTIFIER is [NULL_EXCLUSION] SUBTYPE_INDICATION
2938 -- [ASPECT_SPECIFICATIONS];
2940 -- The subtype indication field is set to Empty for subtypes
2941 -- declared in package Standard (Positive, Natural).
2943 -- N_Subtype_Declaration
2944 -- Sloc points to SUBTYPE
2945 -- Defining_Identifier (Node1)
2946 -- Null_Exclusion_Present (Flag11)
2947 -- Subtype_Indication (Node5)
2948 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
2949 -- Exception_Junk (Flag8-Sem)
2950 -- Has_Dynamic_Range_Check (Flag12-Sem)
2952 -------------------------------
2953 -- 3.2.2 Subtype Indication --
2954 -------------------------------
2956 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
2958 -- Note: if no constraint is present, the subtype indication appears
2959 -- directly in the tree as a subtype mark. The N_Subtype_Indication
2960 -- node is used only if a constraint is present.
2962 -- Note: [For Ada 2005 (AI-231)]: Because Ada 2005 extends this rule
2963 -- with the null-exclusion part (see AI-231), we had to introduce a new
2964 -- attribute in all the parents of subtype_indication nodes to indicate
2965 -- if the null-exclusion is present.
2967 -- Note: the reason that this node has expression fields is that a
2968 -- subtype indication can appear as an operand of a membership test.
2970 -- N_Subtype_Indication
2971 -- Sloc points to first token of subtype mark
2972 -- Subtype_Mark (Node4)
2973 -- Constraint (Node3)
2974 -- Etype (Node5-Sem)
2975 -- Must_Not_Freeze (Flag8-Sem)
2977 -- Note: Depending on context, the Etype is either the entity of the
2978 -- Subtype_Mark field, or it is an itype constructed to reify the
2979 -- subtype indication. In particular, such itypes are created for a
2980 -- subtype indication that appears in an array type declaration. This
2981 -- simplifies constraint checking in indexed components.
2983 -- For subtype indications that appear in scalar type and subtype
2984 -- declarations, the Etype is the entity of the subtype mark.
2986 -------------------------
2987 -- 3.2.2 Subtype Mark --
2988 -------------------------
2990 -- SUBTYPE_MARK ::= subtype_NAME
2992 -----------------------
2993 -- 3.2.2 Constraint --
2994 -----------------------
2996 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
2998 ------------------------------
2999 -- 3.2.2 Scalar Constraint --
3000 ------------------------------
3002 -- SCALAR_CONSTRAINT ::=
3003 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
3005 ---------------------------------
3006 -- 3.2.2 Composite Constraint --
3007 ---------------------------------
3009 -- COMPOSITE_CONSTRAINT ::=
3010 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
3012 -------------------------------
3013 -- 3.3.1 Object Declaration --
3014 -------------------------------
3016 -- OBJECT_DECLARATION ::=
3017 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
3018 -- [NULL_EXCLUSION] SUBTYPE_INDICATION [:= EXPRESSION]
3019 -- [ASPECT_SPECIFICATIONS];
3020 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
3021 -- ACCESS_DEFINITION [:= EXPRESSION]
3022 -- [ASPECT_SPECIFICATIONS];
3023 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
3024 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION]
3025 -- [ASPECT_SPECIFICATIONS];
3026 -- | SINGLE_TASK_DECLARATION
3027 -- | SINGLE_PROTECTED_DECLARATION
3029 -- Note: aliased is not permitted in Ada 83 mode
3031 -- The N_Object_Declaration node is only for the first three cases.
3032 -- Single task declaration is handled by P_Task (9.1)
3033 -- Single protected declaration is handled by P_protected (9.5)
3035 -- Although the syntax allows multiple identifiers in the list, the
3036 -- semantics is as though successive declarations were given with
3037 -- identical type definition and expression components. To simplify
3038 -- semantic processing, the parser represents a multiple declaration
3039 -- case as a sequence of single declarations, using the More_Ids and
3040 -- Prev_Ids flags to preserve the original source form as described
3041 -- in the section on "Handling of Defining Identifier Lists".
3043 -- The flag Has_Init_Expression is set if an initializing expression
3044 -- is present. Normally it is set if and only if Expression contains
3045 -- a non-empty value, but there is an exception to this. When the
3046 -- initializing expression is an aggregate which requires explicit
3047 -- assignments, the Expression field gets set to Empty, but this flag
3048 -- is still set, so we don't forget we had an initializing expression.
3050 -- Note: if a range check is required for the initialization
3051 -- expression then the Do_Range_Check flag is set in the Expression,
3052 -- with the check being done against the type given by the object
3053 -- definition, which is also the Etype of the defining identifier.
3055 -- Note: the contents of the Expression field must be ignored (i.e.
3056 -- treated as though it were Empty) if No_Initialization is set True.
3058 -- Note: the back end places some restrictions on the form of the
3059 -- Expression field. If the object being declared is Atomic, then
3060 -- the Expression may not have the form of an aggregate (since this
3061 -- might cause the back end to generate separate assignments). In this
3062 -- case the front end must generate an extra temporary and initialize
3063 -- this temporary as required (the temporary itself is not atomic).
3065 -- Note: there is no node kind for object definition. Instead, the
3066 -- corresponding field holds a subtype indication, an array type
3067 -- definition, or (Ada 2005, AI-406) an access definition.
3069 -- N_Object_Declaration
3070 -- Sloc points to first identifier
3071 -- Defining_Identifier (Node1)
3072 -- Aliased_Present (Flag4)
3073 -- Constant_Present (Flag17) set if CONSTANT appears
3074 -- Null_Exclusion_Present (Flag11)
3075 -- Object_Definition (Node4) subtype indic./array type def./access def.
3076 -- Expression (Node3) (set to Empty if not present)
3077 -- Handler_List_Entry (Node2-Sem)
3078 -- Corresponding_Generic_Association (Node5-Sem)
3079 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3080 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3081 -- No_Initialization (Flag13-Sem)
3082 -- Assignment_OK (Flag15-Sem)
3083 -- Exception_Junk (Flag8-Sem)
3084 -- Is_Subprogram_Descriptor (Flag16-Sem)
3085 -- Has_Init_Expression (Flag14)
3086 -- Suppress_Assignment_Checks (Flag18-Sem)
3088 -------------------------------------
3089 -- 3.3.1 Defining Identifier List --
3090 -------------------------------------
3092 -- DEFINING_IDENTIFIER_LIST ::=
3093 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
3095 -------------------------------
3096 -- 3.3.2 Number Declaration --
3097 -------------------------------
3099 -- NUMBER_DECLARATION ::=
3100 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
3102 -- Although the syntax allows multiple identifiers in the list, the
3103 -- semantics is as though successive declarations were given with
3104 -- identical expressions. To simplify semantic processing, the parser
3105 -- represents a multiple declaration case as a sequence of single
3106 -- declarations, using the More_Ids and Prev_Ids flags to preserve
3107 -- the original source form as described in the section on "Handling
3108 -- of Defining Identifier Lists".
3110 -- N_Number_Declaration
3111 -- Sloc points to first identifier
3112 -- Defining_Identifier (Node1)
3113 -- Expression (Node3)
3114 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3115 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3117 ----------------------------------
3118 -- 3.4 Derived Type Definition --
3119 ----------------------------------
3121 -- DERIVED_TYPE_DEFINITION ::=
3122 -- [abstract] [limited] new [NULL_EXCLUSION] parent_SUBTYPE_INDICATION
3123 -- [[and INTERFACE_LIST] RECORD_EXTENSION_PART]
3125 -- Note: ABSTRACT, LIMITED, and record extension part are not permitted
3128 -- Note: a record extension part is required if ABSTRACT is present
3130 -- N_Derived_Type_Definition
3131 -- Sloc points to NEW
3132 -- Abstract_Present (Flag4)
3133 -- Null_Exclusion_Present (Flag11) (set to False if not present)
3134 -- Subtype_Indication (Node5)
3135 -- Record_Extension_Part (Node3) (set to Empty if not present)
3136 -- Limited_Present (Flag17)
3137 -- Task_Present (Flag5) set in task interfaces
3138 -- Protected_Present (Flag6) set in protected interfaces
3139 -- Synchronized_Present (Flag7) set in interfaces
3140 -- Interface_List (List2) (set to No_List if none)
3141 -- Interface_Present (Flag16) set in abstract interfaces
3143 -- Note: Task_Present, Protected_Present, Synchronized_Present,
3144 -- Interface_List, and Interface_Present are used for abstract
3145 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
3147 ---------------------------
3148 -- 3.5 Range Constraint --
3149 ---------------------------
3151 -- RANGE_CONSTRAINT ::= range RANGE
3153 -- N_Range_Constraint
3154 -- Sloc points to RANGE
3155 -- Range_Expression (Node4)
3162 -- RANGE_ATTRIBUTE_REFERENCE
3163 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
3165 -- Note: the case of a range given as a range attribute reference
3166 -- appears directly in the tree as an attribute reference.
3168 -- Note: the field name for a reference to a range is Range_Expression
3169 -- rather than Range, because range is a reserved keyword in Ada.
3171 -- Note: the reason that this node has expression fields is that a
3172 -- range can appear as an operand of a membership test. The Etype
3173 -- field is the type of the range (we do NOT construct an implicit
3174 -- subtype to represent the range exactly).
3177 -- Sloc points to ..
3178 -- Low_Bound (Node1)
3179 -- High_Bound (Node2)
3180 -- Includes_Infinities (Flag11)
3181 -- plus fields for expression
3183 -- Note: if the range appears in a context, such as a subtype
3184 -- declaration, where range checks are required on one or both of
3185 -- the expression fields, then type conversion nodes are inserted
3186 -- to represent the required checks.
3188 ----------------------------------------
3189 -- 3.5.1 Enumeration Type Definition --
3190 ----------------------------------------
3192 -- ENUMERATION_TYPE_DEFINITION ::=
3193 -- (ENUMERATION_LITERAL_SPECIFICATION
3194 -- {, ENUMERATION_LITERAL_SPECIFICATION})
3196 -- Note: the Literals field in the node described below is null for
3197 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
3198 -- which special processing handles these types as special cases.
3200 -- N_Enumeration_Type_Definition
3201 -- Sloc points to left parenthesis
3202 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
3203 -- End_Label (Node4) (set to Empty if internally generated record)
3205 ----------------------------------------------
3206 -- 3.5.1 Enumeration Literal Specification --
3207 ----------------------------------------------
3209 -- ENUMERATION_LITERAL_SPECIFICATION ::=
3210 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
3212 ---------------------------------------
3213 -- 3.5.1 Defining Character Literal --
3214 ---------------------------------------
3216 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
3218 -- A defining character literal is an entity, which has additional
3219 -- fields depending on the setting of the Ekind field. These
3220 -- additional fields are defined (and access subprograms declared)
3221 -- in package Einfo.
3223 -- Note: N_Defining_Character_Literal is an extended node whose fields
3224 -- are deliberately laid out to match layout of fields in an ordinary
3225 -- N_Character_Literal node, allowing for easy alteration of a character
3226 -- literal node into a defining character literal node. For details, see
3227 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
3229 -- N_Defining_Character_Literal
3230 -- Sloc points to literal
3231 -- Chars (Name1) contains the Name_Id for the identifier
3232 -- Next_Entity (Node2-Sem)
3233 -- Scope (Node3-Sem)
3234 -- Etype (Node5-Sem)
3236 ------------------------------------
3237 -- 3.5.4 Integer Type Definition --
3238 ------------------------------------
3240 -- Note: there is an error in this rule in the latest version of the
3241 -- grammar, so we have retained the old rule pending clarification.
3243 -- INTEGER_TYPE_DEFINITION ::=
3244 -- SIGNED_INTEGER_TYPE_DEFINITION
3245 -- | MODULAR_TYPE_DEFINITION
3247 -------------------------------------------
3248 -- 3.5.4 Signed Integer Type Definition --
3249 -------------------------------------------
3251 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
3252 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
3254 -- Note: the Low_Bound and High_Bound fields are set to Empty
3255 -- for integer types defined in package Standard.
3257 -- N_Signed_Integer_Type_Definition
3258 -- Sloc points to RANGE
3259 -- Low_Bound (Node1)
3260 -- High_Bound (Node2)
3262 ------------------------------------
3263 -- 3.5.4 Modular Type Definition --
3264 ------------------------------------
3266 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
3268 -- N_Modular_Type_Definition
3269 -- Sloc points to MOD
3270 -- Expression (Node3)
3272 ---------------------------------
3273 -- 3.5.6 Real Type Definition --
3274 ---------------------------------
3276 -- REAL_TYPE_DEFINITION ::=
3277 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
3279 --------------------------------------
3280 -- 3.5.7 Floating Point Definition --
3281 --------------------------------------
3283 -- FLOATING_POINT_DEFINITION ::=
3284 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
3286 -- Note: The Digits_Expression and Real_Range_Specifications fields
3287 -- are set to Empty for floating-point types declared in Standard.
3289 -- N_Floating_Point_Definition
3290 -- Sloc points to DIGITS
3291 -- Digits_Expression (Node2)
3292 -- Real_Range_Specification (Node4) (set to Empty if not present)
3294 -------------------------------------
3295 -- 3.5.7 Real Range Specification --
3296 -------------------------------------
3298 -- REAL_RANGE_SPECIFICATION ::=
3299 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
3301 -- N_Real_Range_Specification
3302 -- Sloc points to RANGE
3303 -- Low_Bound (Node1)
3304 -- High_Bound (Node2)
3306 -----------------------------------
3307 -- 3.5.9 Fixed Point Definition --
3308 -----------------------------------
3310 -- FIXED_POINT_DEFINITION ::=
3311 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
3313 --------------------------------------------
3314 -- 3.5.9 Ordinary Fixed Point Definition --
3315 --------------------------------------------
3317 -- ORDINARY_FIXED_POINT_DEFINITION ::=
3318 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
3320 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
3322 -- N_Ordinary_Fixed_Point_Definition
3323 -- Sloc points to DELTA
3324 -- Delta_Expression (Node3)
3325 -- Real_Range_Specification (Node4)
3327 -------------------------------------------
3328 -- 3.5.9 Decimal Fixed Point Definition --
3329 -------------------------------------------
3331 -- DECIMAL_FIXED_POINT_DEFINITION ::=
3332 -- delta static_EXPRESSION
3333 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
3335 -- Note: decimal types are not permitted in Ada 83 mode
3337 -- N_Decimal_Fixed_Point_Definition
3338 -- Sloc points to DELTA
3339 -- Delta_Expression (Node3)
3340 -- Digits_Expression (Node2)
3341 -- Real_Range_Specification (Node4) (set to Empty if not present)
3343 ------------------------------
3344 -- 3.5.9 Digits Constraint --
3345 ------------------------------
3347 -- DIGITS_CONSTRAINT ::=
3348 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
3350 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
3351 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
3353 -- N_Digits_Constraint
3354 -- Sloc points to DIGITS
3355 -- Digits_Expression (Node2)
3356 -- Range_Constraint (Node4) (set to Empty if not present)
3358 --------------------------------
3359 -- 3.6 Array Type Definition --
3360 --------------------------------
3362 -- ARRAY_TYPE_DEFINITION ::=
3363 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
3365 -----------------------------------------
3366 -- 3.6 Unconstrained Array Definition --
3367 -----------------------------------------
3369 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
3370 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
3371 -- COMPONENT_DEFINITION
3373 -- Note: dimensionality of array is indicated by number of entries in
3374 -- the Subtype_Marks list, which has one entry for each dimension.
3376 -- N_Unconstrained_Array_Definition
3377 -- Sloc points to ARRAY
3378 -- Subtype_Marks (List2)
3379 -- Component_Definition (Node4)
3381 -----------------------------------
3382 -- 3.6 Index Subtype Definition --
3383 -----------------------------------
3385 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
3387 -- There is no explicit node in the tree for an index subtype
3388 -- definition since the N_Unconstrained_Array_Definition node
3389 -- incorporates the type marks which appear in this context.
3391 ---------------------------------------
3392 -- 3.6 Constrained Array Definition --
3393 ---------------------------------------
3395 -- CONSTRAINED_ARRAY_DEFINITION ::=
3396 -- array (DISCRETE_SUBTYPE_DEFINITION
3397 -- {, DISCRETE_SUBTYPE_DEFINITION})
3398 -- of COMPONENT_DEFINITION
3400 -- Note: dimensionality of array is indicated by number of entries
3401 -- in the Discrete_Subtype_Definitions list, which has one entry
3402 -- for each dimension.
3404 -- N_Constrained_Array_Definition
3405 -- Sloc points to ARRAY
3406 -- Discrete_Subtype_Definitions (List2)
3407 -- Component_Definition (Node4)
3409 -- Note: although the language allows the full syntax for discrete
3410 -- subtype definitions (i.e. a discrete subtype indication or a range),
3411 -- in the generated tree, we always rewrite these as N_Range nodes.
3413 --------------------------------------
3414 -- 3.6 Discrete Subtype Definition --
3415 --------------------------------------
3417 -- DISCRETE_SUBTYPE_DEFINITION ::=
3418 -- discrete_SUBTYPE_INDICATION | RANGE
3420 -------------------------------
3421 -- 3.6 Component Definition --
3422 -------------------------------
3424 -- COMPONENT_DEFINITION ::=
3425 -- [aliased] [NULL_EXCLUSION] SUBTYPE_INDICATION | ACCESS_DEFINITION
3427 -- Note: although the syntax does not permit a component definition to
3428 -- be an anonymous array (and the parser will diagnose such an attempt
3429 -- with an appropriate message), it is possible for anonymous arrays
3430 -- to appear as component definitions. The semantics and back end handle
3431 -- this case properly, and the expander in fact generates such cases.
3432 -- Access_Definition is an optional field that gives support to
3433 -- Ada 2005 (AI-230). The parser generates nodes that have either the
3434 -- Subtype_Indication field or else the Access_Definition field.
3436 -- N_Component_Definition
3437 -- Sloc points to ALIASED, ACCESS, or to first token of subtype mark
3438 -- Aliased_Present (Flag4)
3439 -- Null_Exclusion_Present (Flag11)
3440 -- Subtype_Indication (Node5) (set to Empty if not present)
3441 -- Access_Definition (Node3) (set to Empty if not present)
3443 -----------------------------
3444 -- 3.6.1 Index Constraint --
3445 -----------------------------
3447 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
3449 -- It is not in general possible to distinguish between discriminant
3450 -- constraints and index constraints at parse time, since a simple
3451 -- name could be either the subtype mark of a discrete range, or an
3452 -- expression in a discriminant association with no name. Either
3453 -- entry appears simply as the name, and the semantic parse must
3454 -- distinguish between the two cases. Thus we use a common tree
3455 -- node format for both of these constraint types.
3457 -- See Discriminant_Constraint for format of node
3459 ---------------------------
3460 -- 3.6.1 Discrete Range --
3461 ---------------------------
3463 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
3465 ----------------------------
3466 -- 3.7 Discriminant Part --
3467 ----------------------------
3469 -- DISCRIMINANT_PART ::=
3470 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
3472 ------------------------------------
3473 -- 3.7 Unknown Discriminant Part --
3474 ------------------------------------
3476 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
3478 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
3480 -- There is no explicit node in the tree for an unknown discriminant
3481 -- part. Instead the Unknown_Discriminants_Present flag is set in the
3484 ----------------------------------
3485 -- 3.7 Known Discriminant Part --
3486 ----------------------------------
3488 -- KNOWN_DISCRIMINANT_PART ::=
3489 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
3491 -------------------------------------
3492 -- 3.7 Discriminant Specification --
3493 -------------------------------------
3495 -- DISCRIMINANT_SPECIFICATION ::=
3496 -- DEFINING_IDENTIFIER_LIST : [NULL_EXCLUSION] SUBTYPE_MARK
3497 -- [:= DEFAULT_EXPRESSION]
3498 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
3499 -- [:= DEFAULT_EXPRESSION]
3501 -- Although the syntax allows multiple identifiers in the list, the
3502 -- semantics is as though successive specifications were given with
3503 -- identical type definition and expression components. To simplify
3504 -- semantic processing, the parser represents a multiple declaration
3505 -- case as a sequence of single specifications, using the More_Ids and
3506 -- Prev_Ids flags to preserve the original source form as described
3507 -- in the section on "Handling of Defining Identifier Lists".
3509 -- N_Discriminant_Specification
3510 -- Sloc points to first identifier
3511 -- Defining_Identifier (Node1)
3512 -- Null_Exclusion_Present (Flag11)
3513 -- Discriminant_Type (Node5) subtype mark or access parameter definition
3514 -- Expression (Node3) (set to Empty if no default expression)
3515 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3516 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3518 -----------------------------
3519 -- 3.7 Default Expression --
3520 -----------------------------
3522 -- DEFAULT_EXPRESSION ::= EXPRESSION
3524 ------------------------------------
3525 -- 3.7.1 Discriminant Constraint --
3526 ------------------------------------
3528 -- DISCRIMINANT_CONSTRAINT ::=
3529 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
3531 -- It is not in general possible to distinguish between discriminant
3532 -- constraints and index constraints at parse time, since a simple
3533 -- name could be either the subtype mark of a discrete range, or an
3534 -- expression in a discriminant association with no name. Either
3535 -- entry appears simply as the name, and the semantic parse must
3536 -- distinguish between the two cases. Thus we use a common tree
3537 -- node format for both of these constraint types.
3539 -- N_Index_Or_Discriminant_Constraint
3540 -- Sloc points to left paren
3541 -- Constraints (List1) points to list of discrete ranges or
3542 -- discriminant associations
3544 -------------------------------------
3545 -- 3.7.1 Discriminant Association --
3546 -------------------------------------
3548 -- DISCRIMINANT_ASSOCIATION ::=
3549 -- [discriminant_SELECTOR_NAME
3550 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
3552 -- Note: a discriminant association that has no selector name list
3553 -- appears directly as an expression in the tree.
3555 -- N_Discriminant_Association
3556 -- Sloc points to first token of discriminant association
3557 -- Selector_Names (List1) (always non-empty, since if no selector
3558 -- names are present, this node is not used, see comment above)
3559 -- Expression (Node3)
3561 ---------------------------------
3562 -- 3.8 Record Type Definition --
3563 ---------------------------------
3565 -- RECORD_TYPE_DEFINITION ::=
3566 -- [[abstract] tagged] [limited] RECORD_DEFINITION
3568 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
3570 -- There is no explicit node in the tree for a record type definition.
3571 -- Instead the flags for Tagged_Present and Limited_Present appear in
3572 -- the N_Record_Definition node for a record definition appearing in
3573 -- the context of a record type definition.
3575 ----------------------------
3576 -- 3.8 Record Definition --
3577 ----------------------------
3579 -- RECORD_DEFINITION ::=
3585 -- Note: the Abstract_Present, Tagged_Present, and Limited_Present
3586 -- flags appear only for a record definition appearing in a record
3589 -- Note: the NULL RECORD case is not permitted in Ada 83
3591 -- N_Record_Definition
3592 -- Sloc points to RECORD or NULL
3593 -- End_Label (Node4) (set to Empty if internally generated record)
3594 -- Abstract_Present (Flag4)
3595 -- Tagged_Present (Flag15)
3596 -- Limited_Present (Flag17)
3597 -- Component_List (Node1) empty in null record case
3598 -- Null_Present (Flag13) set in null record case
3599 -- Task_Present (Flag5) set in task interfaces
3600 -- Protected_Present (Flag6) set in protected interfaces
3601 -- Synchronized_Present (Flag7) set in interfaces
3602 -- Interface_Present (Flag16) set in abstract interfaces
3603 -- Interface_List (List2) (set to No_List if none)
3605 -- Note: Task_Present, Protected_Present, Synchronized _Present,
3606 -- Interface_List and Interface_Present are used for abstract
3607 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
3609 -------------------------
3610 -- 3.8 Component List --
3611 -------------------------
3613 -- COMPONENT_LIST ::=
3614 -- COMPONENT_ITEM {COMPONENT_ITEM}
3615 -- | {COMPONENT_ITEM} VARIANT_PART
3619 -- Sloc points to first token of component list
3620 -- Component_Items (List3)
3621 -- Variant_Part (Node4) (set to Empty if no variant part)
3622 -- Null_Present (Flag13)
3624 -------------------------
3625 -- 3.8 Component Item --
3626 -------------------------
3628 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
3630 -- Note: A component item can also be a pragma, and in the tree
3631 -- that is obtained after semantic processing, a component item
3632 -- can be an N_Null node resulting from a non-recognized pragma.
3634 --------------------------------
3635 -- 3.8 Component Declaration --
3636 --------------------------------
3638 -- COMPONENT_DECLARATION ::=
3639 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
3640 -- [:= DEFAULT_EXPRESSION]
3641 -- [ASPECT_SPECIFICATIONS];
3643 -- Note: although the syntax does not permit a component definition to
3644 -- be an anonymous array (and the parser will diagnose such an attempt
3645 -- with an appropriate message), it is possible for anonymous arrays
3646 -- to appear as component definitions. The semantics and back end handle
3647 -- this case properly, and the expander in fact generates such cases.
3649 -- Although the syntax allows multiple identifiers in the list, the
3650 -- semantics is as though successive declarations were given with the
3651 -- same component definition and expression components. To simplify
3652 -- semantic processing, the parser represents a multiple declaration
3653 -- case as a sequence of single declarations, using the More_Ids and
3654 -- Prev_Ids flags to preserve the original source form as described
3655 -- in the section on "Handling of Defining Identifier Lists".
3657 -- N_Component_Declaration
3658 -- Sloc points to first identifier
3659 -- Defining_Identifier (Node1)
3660 -- Component_Definition (Node4)
3661 -- Expression (Node3) (set to Empty if no default expression)
3662 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3663 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3665 -------------------------
3666 -- 3.8.1 Variant Part --
3667 -------------------------
3670 -- case discriminant_DIRECT_NAME is
3671 -- VARIANT {VARIANT}
3674 -- Note: the variants list can contain pragmas as well as variants.
3675 -- In a properly formed program there is at least one variant.
3678 -- Sloc points to CASE
3682 --------------------
3684 --------------------
3687 -- when DISCRETE_CHOICE_LIST =>
3691 -- Sloc points to WHEN
3692 -- Discrete_Choices (List4)
3693 -- Component_List (Node1)
3694 -- Enclosing_Variant (Node2-Sem)
3695 -- Present_Expr (Uint3-Sem)
3696 -- Dcheck_Function (Node5-Sem)
3697 -- Has_SP_Choice (Flag15-Sem)
3699 -- Note: in the list of Discrete_Choices, the tree passed to the back
3700 -- end does not have choice entries corresponding to names of statically
3701 -- predicated subtypes. Such entries are always expanded out to the list
3702 -- of equivalent values or ranges. The ASIS tree generated in -gnatct
3703 -- mode also has this expansion, but done with a proper Rewrite call on
3704 -- the N_Variant node so that ASIS can properly retrieve the original.
3706 ---------------------------------
3707 -- 3.8.1 Discrete Choice List --
3708 ---------------------------------
3710 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
3712 ----------------------------
3713 -- 3.8.1 Discrete Choice --
3714 ----------------------------
3716 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
3718 -- Note: in Ada 83 mode, the expression must be a simple expression
3720 -- The only choice that appears explicitly is the OTHERS choice, as
3721 -- defined here. Other cases of discrete choice (expression and
3722 -- discrete range) appear directly. This production is also used
3723 -- for the OTHERS possibility of an exception choice.
3725 -- Note: in accordance with the syntax, the parser does not check that
3726 -- OTHERS appears at the end on its own in a choice list context. This
3727 -- is a semantic check.
3730 -- Sloc points to OTHERS
3731 -- Others_Discrete_Choices (List1-Sem)
3732 -- All_Others (Flag11-Sem)
3734 ----------------------------------
3735 -- 3.9.1 Record Extension Part --
3736 ----------------------------------
3738 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
3740 -- Note: record extension parts are not permitted in Ada 83 mode
3742 --------------------------------------
3743 -- 3.9.4 Interface Type Definition --
3744 --------------------------------------
3746 -- INTERFACE_TYPE_DEFINITION ::=
3747 -- [limited | task | protected | synchronized]
3748 -- interface [interface_list]
3750 -- Note: Interfaces are implemented with N_Record_Definition and
3751 -- N_Derived_Type_Definition nodes because most of the support
3752 -- for the analysis of abstract types has been reused to
3753 -- analyze abstract interfaces.
3755 ----------------------------------
3756 -- 3.10 Access Type Definition --
3757 ----------------------------------
3759 -- ACCESS_TYPE_DEFINITION ::=
3760 -- ACCESS_TO_OBJECT_DEFINITION
3761 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
3763 --------------------------
3764 -- 3.10 Null Exclusion --
3765 --------------------------
3767 -- NULL_EXCLUSION ::= not null
3769 ---------------------------------------
3770 -- 3.10 Access To Object Definition --
3771 ---------------------------------------
3773 -- ACCESS_TO_OBJECT_DEFINITION ::=
3774 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER]
3775 -- SUBTYPE_INDICATION
3777 -- N_Access_To_Object_Definition
3778 -- Sloc points to ACCESS
3779 -- All_Present (Flag15)
3780 -- Null_Exclusion_Present (Flag11)
3781 -- Null_Excluding_Subtype (Flag16)
3782 -- Subtype_Indication (Node5)
3783 -- Constant_Present (Flag17)
3785 -----------------------------------
3786 -- 3.10 General Access Modifier --
3787 -----------------------------------
3789 -- GENERAL_ACCESS_MODIFIER ::= all | constant
3791 -- Note: general access modifiers are not permitted in Ada 83 mode
3793 -- There is no explicit node in the tree for general access modifier.
3794 -- Instead the All_Present or Constant_Present flags are set in the
3797 -------------------------------------------
3798 -- 3.10 Access To Subprogram Definition --
3799 -------------------------------------------
3801 -- ACCESS_TO_SUBPROGRAM_DEFINITION
3802 -- [NULL_EXCLUSION] access [protected] procedure PARAMETER_PROFILE
3803 -- | [NULL_EXCLUSION] access [protected] function
3804 -- PARAMETER_AND_RESULT_PROFILE
3806 -- Note: access to subprograms are not permitted in Ada 83 mode
3808 -- N_Access_Function_Definition
3809 -- Sloc points to ACCESS
3810 -- Null_Exclusion_Present (Flag11)
3811 -- Null_Exclusion_In_Return_Present (Flag14)
3812 -- Protected_Present (Flag6)
3813 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3814 -- Result_Definition (Node4) result subtype (subtype mark or access def)
3816 -- N_Access_Procedure_Definition
3817 -- Sloc points to ACCESS
3818 -- Null_Exclusion_Present (Flag11)
3819 -- Protected_Present (Flag6)
3820 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3822 -----------------------------
3823 -- 3.10 Access Definition --
3824 -----------------------------
3826 -- ACCESS_DEFINITION ::=
3827 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER] SUBTYPE_MARK
3828 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
3830 -- Note: access to subprograms are an Ada 2005 (AI-254) extension
3832 -- N_Access_Definition
3833 -- Sloc points to ACCESS
3834 -- Null_Exclusion_Present (Flag11)
3835 -- All_Present (Flag15)
3836 -- Constant_Present (Flag17)
3837 -- Subtype_Mark (Node4)
3838 -- Access_To_Subprogram_Definition (Node3) (set to Empty if not present)
3840 -----------------------------------------
3841 -- 3.10.1 Incomplete Type Declaration --
3842 -----------------------------------------
3844 -- INCOMPLETE_TYPE_DECLARATION ::=
3845 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [IS TAGGED];
3847 -- N_Incomplete_Type_Declaration
3848 -- Sloc points to TYPE
3849 -- Defining_Identifier (Node1)
3850 -- Discriminant_Specifications (List4) (set to No_List if no
3851 -- discriminant part, or if the discriminant part is an
3852 -- unknown discriminant part)
3853 -- Premature_Use (Node5-Sem) used for improved diagnostics.
3854 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
3855 -- Tagged_Present (Flag15)
3857 ----------------------------
3858 -- 3.11 Declarative Part --
3859 ----------------------------
3861 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
3863 -- Note: although the parser enforces the syntactic requirement that
3864 -- a declarative part can contain only declarations, the semantic
3865 -- processing may add statements to the list of actions in a
3866 -- declarative part, so the code generator should be prepared
3867 -- to accept a statement in this position.
3869 ----------------------------
3870 -- 3.11 Declarative Item --
3871 ----------------------------
3873 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
3875 ----------------------------------
3876 -- 3.11 Basic Declarative Item --
3877 ----------------------------------
3879 -- BASIC_DECLARATIVE_ITEM ::=
3880 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
3886 -- BODY ::= PROPER_BODY | BODY_STUB
3888 -----------------------
3889 -- 3.11 Proper Body --
3890 -----------------------
3893 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
3900 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
3901 -- | INDEXED_COMPONENT | SLICE
3902 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
3903 -- | TYPE_CONVERSION | FUNCTION_CALL
3904 -- | CHARACTER_LITERAL
3906 ----------------------
3907 -- 4.1 Direct Name --
3908 ----------------------
3910 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
3916 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
3918 -------------------------------
3919 -- 4.1 Explicit Dereference --
3920 -------------------------------
3922 -- EXPLICIT_DEREFERENCE ::= NAME . all
3924 -- N_Explicit_Dereference
3925 -- Sloc points to ALL
3927 -- Actual_Designated_Subtype (Node4-Sem)
3928 -- Has_Dereference_Action (Flag13-Sem)
3929 -- Atomic_Sync_Required (Flag14-Sem)
3930 -- plus fields for expression
3932 -------------------------------
3933 -- 4.1 Implicit Dereference --
3934 -------------------------------
3936 -- IMPLICIT_DEREFERENCE ::= NAME
3938 ------------------------------
3939 -- 4.1.1 Indexed Component --
3940 ------------------------------
3942 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
3944 -- Note: the parser may generate this node in some situations where it
3945 -- should be a function call. The semantic pass must correct this
3946 -- misidentification (which is inevitable at the parser level).
3948 -- N_Indexed_Component
3949 -- Sloc contains a copy of the Sloc value of the Prefix
3951 -- Expressions (List1)
3952 -- Generalized_Indexing (Node4-Sem)
3953 -- Atomic_Sync_Required (Flag14-Sem)
3954 -- plus fields for expression
3956 -- Note: if any of the subscripts requires a range check, then the
3957 -- Do_Range_Check flag is set on the corresponding expression, with
3958 -- the index type being determined from the type of the Prefix, which
3959 -- references the array being indexed.
3961 -- Note: in a fully analyzed and expanded indexed component node, and
3962 -- hence in any such node that gigi sees, if the prefix is an access
3963 -- type, then an explicit dereference operation has been inserted.
3969 -- SLICE ::= PREFIX (DISCRETE_RANGE)
3971 -- Note: an implicit subtype is created to describe the resulting
3972 -- type, so that the bounds of this type are the bounds of the slice.
3975 -- Sloc points to first token of prefix
3977 -- Discrete_Range (Node4)
3978 -- plus fields for expression
3980 -------------------------------
3981 -- 4.1.3 Selected Component --
3982 -------------------------------
3984 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
3986 -- Note: selected components that are semantically expanded names get
3987 -- changed during semantic processing into the separate N_Expanded_Name
3988 -- node. See description of this node in the section on semantic nodes.
3990 -- N_Selected_Component
3991 -- Sloc points to the period
3993 -- Selector_Name (Node2)
3994 -- Associated_Node (Node4-Sem)
3995 -- Do_Discriminant_Check (Flag3-Sem)
3996 -- Is_In_Discriminant_Check (Flag11-Sem)
3997 -- Atomic_Sync_Required (Flag14-Sem)
3998 -- Is_Prefixed_Call (Flag17-Sem)
3999 -- plus fields for expression
4001 --------------------------
4002 -- 4.1.3 Selector Name --
4003 --------------------------
4005 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
4007 --------------------------------
4008 -- 4.1.4 Attribute Reference --
4009 --------------------------------
4011 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
4013 -- Note: the syntax is quite ambiguous at this point. Consider:
4015 -- A'Length (X) X is part of the attribute designator
4016 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
4017 -- A'Class (X) X is the expression of a type conversion
4019 -- It would be possible for the parser to distinguish these cases
4020 -- by looking at the attribute identifier. However, that would mean
4021 -- more work in introducing new implementation defined attributes,
4022 -- and also it would mean that special processing for attributes
4023 -- would be scattered around, instead of being centralized in the
4024 -- semantic routine that handles an N_Attribute_Reference node.
4025 -- Consequently, the parser in all the above cases stores the
4026 -- expression (X in these examples) as a single element list in
4027 -- in the Expressions field of the N_Attribute_Reference node.
4029 -- Similarly, for attributes like Max which take two arguments,
4030 -- we store the two arguments as a two element list in the
4031 -- Expressions field. Of course it is clear at parse time that
4032 -- this case is really a function call with an attribute as the
4033 -- prefix, but it turns out to be convenient to handle the two
4034 -- argument case in a similar manner to the one argument case,
4035 -- and indeed in general the parser will accept any number of
4036 -- expressions in this position and store them as a list in the
4037 -- attribute reference node. This allows for future addition of
4038 -- attributes that take more than two arguments.
4040 -- Note: named associates are not permitted in function calls where
4041 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
4042 -- to skip the normal subprogram argument processing.
4044 -- Note: for the attributes whose designators are technically keywords,
4045 -- i.e. digits, access, delta, range, the Attribute_Name field contains
4046 -- the corresponding name, even though no identifier is involved.
4048 -- Note: the generated code may contain stream attributes applied to
4049 -- limited types for which no stream routines exist officially. In such
4050 -- case, the result is to use the stream attribute for the underlying
4051 -- full type, or in the case of a protected type, the components
4052 -- (including any discriminants) are merely streamed in order.
4054 -- See Exp_Attr for a complete description of which attributes are
4055 -- passed onto Gigi, and which are handled entirely by the front end.
4057 -- Gigi restriction: For the Pos attribute, the prefix cannot be
4058 -- a non-standard enumeration type or a nonzero/zero semantics
4059 -- boolean type, so the value is simply the stored representation.
4061 -- Gigi requirement: For the Mechanism_Code attribute, if the prefix
4062 -- references a subprogram that is a renaming, then the front end must
4063 -- rewrite the attribute to refer directly to the renamed entity.
4065 -- Note: syntactically the prefix of an attribute reference must be a
4066 -- name, and this (somewhat artificial) requirement is enforced by the
4067 -- parser. However, for many attributes, such as 'Valid, it is quite
4068 -- reasonable to apply the attribute to any value, and hence to any
4069 -- expression. Internally in the tree, the prefix is an expression which
4070 -- does not have to be a name, and this is handled fine by the semantic
4071 -- analysis and expansion, and back ends. This arises for the case of
4072 -- attribute references built by the expander (e.g. 'Valid for the case
4073 -- of an implicit validity check).
4075 -- Note: In generated code, the Address and Unrestricted_Access
4076 -- attributes can be applied to any expression, and the meaning is
4077 -- to create an object containing the value (the object is in the
4078 -- current stack frame), and pass the address of this value. If the
4079 -- Must_Be_Byte_Aligned flag is set, then the object whose address
4080 -- is taken must be on a byte (storage unit) boundary, and if it is
4081 -- not (or may not be), then the generated code must create a copy
4082 -- that is byte aligned, and pass the address of this copy.
4084 -- N_Attribute_Reference
4085 -- Sloc points to apostrophe
4086 -- Prefix (Node3) (general expression, see note above)
4087 -- Attribute_Name (Name2) identifier name from attribute designator
4088 -- Expressions (List1) (set to No_List if no associated expressions)
4089 -- Entity (Node4-Sem) used if the attribute yields a type
4090 -- Associated_Node (Node4-Sem)
4091 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
4092 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
4093 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
4094 -- Header_Size_Added (Flag11-Sem)
4095 -- Redundant_Use (Flag13-Sem)
4096 -- Must_Be_Byte_Aligned (Flag14-Sem)
4097 -- plus fields for expression
4099 -- Note: in Modify_Tree_For_C mode, Max and Min attributes are expanded
4100 -- into equivalent if expressions, properly taking care of side effects.
4102 ---------------------------------
4103 -- 4.1.4 Attribute Designator --
4104 ---------------------------------
4106 -- ATTRIBUTE_DESIGNATOR ::=
4107 -- IDENTIFIER [(static_EXPRESSION)]
4108 -- | access | delta | digits
4110 -- There is no explicit node in the tree for an attribute designator.
4111 -- Instead the Attribute_Name and Expressions fields of the parent
4112 -- node (N_Attribute_Reference node) hold the information.
4114 -- Note: if ACCESS, DELTA, or DIGITS appears in an attribute
4115 -- designator, then they are treated as identifiers internally
4116 -- rather than the keywords of the same name.
4118 --------------------------------------
4119 -- 4.1.4 Range Attribute Reference --
4120 --------------------------------------
4122 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
4124 -- A range attribute reference is represented in the tree using the
4125 -- normal N_Attribute_Reference node.
4127 ---------------------------------------
4128 -- 4.1.4 Range Attribute Designator --
4129 ---------------------------------------
4131 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
4133 -- A range attribute designator is represented in the tree using the
4134 -- normal N_Attribute_Reference node.
4136 --------------------
4138 --------------------
4141 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
4143 -----------------------------
4144 -- 4.3.1 Record Aggregate --
4145 -----------------------------
4147 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
4150 -- Sloc points to left parenthesis
4151 -- Expressions (List1) (set to No_List if none or null record case)
4152 -- Component_Associations (List2) (set to No_List if none)
4153 -- Null_Record_Present (Flag17)
4154 -- Aggregate_Bounds (Node3-Sem)
4155 -- Associated_Node (Node4-Sem)
4156 -- Compile_Time_Known_Aggregate (Flag18-Sem)
4157 -- Expansion_Delayed (Flag11-Sem)
4158 -- Has_Self_Reference (Flag13-Sem)
4159 -- plus fields for expression
4161 -- Note: this structure is used for both record and array aggregates
4162 -- since the two cases are not separable by the parser. The parser
4163 -- makes no attempt to enforce consistency here, so it is up to the
4164 -- semantic phase to make sure that the aggregate is consistent (i.e.
4165 -- that it is not a "half-and-half" case that mixes record and array
4166 -- syntax). In particular, for a record aggregate, the expressions
4167 -- field will be set if there are positional associations.
4169 -- Note: N_Aggregate is not used for all aggregates; in particular,
4170 -- there is a separate node kind for extension aggregates.
4172 -- Note: gigi/gcc can handle array aggregates correctly providing that
4173 -- they are entirely positional, and the array subtype involved has a
4174 -- known at compile time length and is not bit packed, or a convention
4175 -- Fortran array with more than one dimension. If these conditions
4176 -- are not met, then the front end must translate the aggregate into
4177 -- an appropriate set of assignments into a temporary.
4179 -- Note: for the record aggregate case, gigi/gcc can handle most cases
4180 -- of record aggregates, including those for packed, and rep-claused
4181 -- records, and also variant records, providing that there are no
4182 -- variable length fields whose size is not known at compile time,
4183 -- and providing that the aggregate is presented in fully named form.
4185 -- The other situation in which array aggregates and record aggregates
4186 -- cannot be passed to the back end is if assignment to one or more
4187 -- components itself needs expansion, e.g. in the case of an assignment
4188 -- of an object of a controlled type. In such cases, the front end
4189 -- must expand the aggregate to a series of assignments, and apply
4190 -- the required expansion to the individual assignment statements.
4192 ----------------------------------------------
4193 -- 4.3.1 Record Component Association List --
4194 ----------------------------------------------
4196 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
4197 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
4200 -- There is no explicit node in the tree for a record component
4201 -- association list. Instead the Null_Record_Present flag is set in
4202 -- the parent node for the NULL RECORD case.
4204 ------------------------------------------------------
4205 -- 4.3.1 Record Component Association (also 4.3.3) --
4206 ------------------------------------------------------
4208 -- RECORD_COMPONENT_ASSOCIATION ::=
4209 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
4211 -- N_Component_Association
4212 -- Sloc points to first selector name
4214 -- Loop_Actions (List2-Sem)
4215 -- Expression (Node3) (empty if Box_Present)
4216 -- Box_Present (Flag15)
4217 -- Inherited_Discriminant (Flag13)
4219 -- Note: this structure is used for both record component associations
4220 -- and array component associations, since the two cases aren't always
4221 -- separable by the parser. The choices list may represent either a
4222 -- list of selector names in the record aggregate case, or a list of
4223 -- discrete choices in the array aggregate case or an N_Others_Choice
4224 -- node (which appears as a singleton list). Box_Present gives support
4225 -- to Ada 2005 (AI-287).
4227 ----------------------------------
4228 -- 4.3.1 Component Choice List --
4229 ----------------------------------
4231 -- COMPONENT_CHOICE_LIST ::=
4232 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
4235 -- The entries of a component choice list appear in the Choices list of
4236 -- the associated N_Component_Association, as either selector names, or
4237 -- as an N_Others_Choice node.
4239 --------------------------------
4240 -- 4.3.2 Extension Aggregate --
4241 --------------------------------
4243 -- EXTENSION_AGGREGATE ::=
4244 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
4246 -- Note: extension aggregates are not permitted in Ada 83 mode
4248 -- N_Extension_Aggregate
4249 -- Sloc points to left parenthesis
4250 -- Ancestor_Part (Node3)
4251 -- Associated_Node (Node4-Sem)
4252 -- Expressions (List1) (set to No_List if none or null record case)
4253 -- Component_Associations (List2) (set to No_List if none)
4254 -- Null_Record_Present (Flag17)
4255 -- Expansion_Delayed (Flag11-Sem)
4256 -- Has_Self_Reference (Flag13-Sem)
4257 -- plus fields for expression
4259 --------------------------
4260 -- 4.3.2 Ancestor Part --
4261 --------------------------
4263 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
4265 ----------------------------
4266 -- 4.3.3 Array Aggregate --
4267 ----------------------------
4269 -- ARRAY_AGGREGATE ::=
4270 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
4272 ---------------------------------------
4273 -- 4.3.3 Positional Array Aggregate --
4274 ---------------------------------------
4276 -- POSITIONAL_ARRAY_AGGREGATE ::=
4277 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
4278 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
4280 -- See Record_Aggregate (4.3.1) for node structure
4282 ----------------------------------
4283 -- 4.3.3 Named Array Aggregate --
4284 ----------------------------------
4286 -- NAMED_ARRAY_AGGREGATE ::=
4287 -- (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
4289 -- See Record_Aggregate (4.3.1) for node structure
4291 ----------------------------------------
4292 -- 4.3.3 Array Component Association --
4293 ----------------------------------------
4295 -- ARRAY_COMPONENT_ASSOCIATION ::=
4296 -- DISCRETE_CHOICE_LIST => EXPRESSION
4297 -- | ITERATED_COMPONENT_ASSOCIATION
4299 -- See Record_Component_Association (4.3.1) for node structure
4300 -- The iterated_component_association is introduced into the
4301 -- Corrigendum of Ada_2012 by AI12-061.
4303 ------------------------------------------
4304 -- 4.3.3 Iterated component Association --
4305 ------------------------------------------
4307 -- ITERATED_COMPONENT_ASSOCIATION ::=
4308 -- for DEFINING_IDENTIFIER in DISCRETE_CHOICE_LIST => EXPRESSION
4310 -- N_Iterated_Component_Association
4311 -- Sloc points to FOR
4312 -- Defining_Identifier (Node1)
4313 -- Loop_Actions (List2-Sem)
4314 -- Expression (Node3)
4315 -- Discrete_Choices (List4)
4316 -- Box_Present (Flag15)
4318 -- Note that Box_Present is always False, but it is intentionally added
4319 -- for completeness.
4321 ----------------------------
4322 -- 4.3.4 Delta Aggregate --
4323 ----------------------------
4325 -- N_Delta_Aggregate
4326 -- Sloc points to left parenthesis
4327 -- Expression (Node3)
4328 -- Component_Associations (List2)
4330 --------------------------------------------------
4331 -- 4.4 Expression/Relation/Term/Factor/Primary --
4332 --------------------------------------------------
4335 -- RELATION {LOGICAL_OPERATOR RELATION}
4337 -- CHOICE_EXPRESSION ::=
4338 -- CHOICE_RELATION {LOGICAL_OPERATOR CHOICE_RELATION}
4340 -- CHOICE_RELATION ::=
4341 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
4344 -- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
4345 -- | RAISE_EXPRESSION
4347 -- MEMBERSHIP_CHOICE_LIST ::=
4348 -- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
4350 -- MEMBERSHIP_CHOICE ::=
4351 -- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
4353 -- LOGICAL_OPERATOR ::= and | and then | or | or else | xor
4355 -- SIMPLE_EXPRESSION ::=
4356 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
4358 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
4360 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
4362 -- No nodes are generated for any of these constructs. Instead, the
4363 -- node for the operator appears directly. When we refer to an
4364 -- expression in this description, we mean any of the possible
4365 -- constituent components of an expression (e.g. identifier is
4366 -- an example of an expression).
4368 -- Note: the above syntax is that Ada 2012 syntax which restricts
4369 -- choice relations to simple expressions to avoid ambiguities in
4370 -- some contexts with set membership notation. It has been decided
4371 -- that in retrospect, the Ada 95 change allowing general expressions
4372 -- in this context was a mistake, so we have reverted to the above
4373 -- syntax in Ada 95 and Ada 2005 modes (the restriction to simple
4374 -- expressions was there in Ada 83 from the start).
4381 -- NUMERIC_LITERAL | null
4382 -- | STRING_LITERAL | AGGREGATE
4383 -- | NAME | QUALIFIED_EXPRESSION
4384 -- | ALLOCATOR | (EXPRESSION)
4386 -- Usually there is no explicit node in the tree for primary. Instead
4387 -- the constituent (e.g. AGGREGATE) appears directly. There are two
4388 -- exceptions. First, there is an explicit node for a null primary.
4391 -- Sloc points to NULL
4392 -- plus fields for expression
4394 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
4395 -- that the parser keep track of which subexpressions are enclosed
4396 -- in parentheses, and how many levels of parentheses are used. This
4397 -- information is required for optimization purposes, and also for
4398 -- some semantic checks (e.g. (((1))) in a procedure spec does not
4399 -- conform with ((((1)))) in the body).
4401 -- The parentheses are recorded by keeping a Paren_Count field in every
4402 -- subexpression node (it is actually present in all nodes, but only
4403 -- used in subexpression nodes). This count records the number of
4404 -- levels of parentheses. If the number of levels in the source exceeds
4405 -- the maximum accommodated by this count, then the count is simply left
4406 -- at the maximum value. This means that there are some pathological
4407 -- cases of failure to detect conformance failures (e.g. an expression
4408 -- with 500 levels of parens will conform with one with 501 levels),
4409 -- but we do not need to lose sleep over this.
4411 -- Historical note: in versions of GNAT prior to 1.75, there was a node
4412 -- type N_Parenthesized_Expression used to accurately record unlimited
4413 -- numbers of levels of parentheses. However, it turned out to be a
4414 -- real nuisance to have to take into account the possible presence of
4415 -- this node during semantic analysis, since basically parentheses have
4416 -- zero relevance to semantic analysis.
4418 -- Note: the level of parentheses always present in things like
4419 -- aggregates does not count, only the parentheses in the primary
4420 -- (EXPRESSION) affect the setting of the Paren_Count field.
4422 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
4423 -- treated as though it were Empty) if No_Initialization is set True.
4425 --------------------------------------
4426 -- 4.5 Short-Circuit Control Forms --
4427 --------------------------------------
4430 -- RELATION {and then RELATION} | RELATION {or else RELATION}
4432 -- Gigi restriction: For both these control forms, the operand and
4433 -- result types are always Standard.Boolean. The expander inserts the
4434 -- required conversion operations where needed to ensure this is the
4438 -- Sloc points to AND of AND THEN
4439 -- Left_Opnd (Node2)
4440 -- Right_Opnd (Node3)
4441 -- Actions (List1-Sem)
4442 -- plus fields for expression
4445 -- Sloc points to OR of OR ELSE
4446 -- Left_Opnd (Node2)
4447 -- Right_Opnd (Node3)
4448 -- Actions (List1-Sem)
4449 -- plus fields for expression
4451 -- Note: The Actions field is used to hold actions associated with
4452 -- the right hand operand. These have to be treated specially since
4453 -- they are not unconditionally executed. See Insert_Actions for a
4454 -- more detailed description of how these actions are handled.
4456 ---------------------------
4457 -- 4.5 Membership Tests --
4458 ---------------------------
4461 -- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
4463 -- MEMBERSHIP_CHOICE_LIST ::=
4464 -- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
4466 -- MEMBERSHIP_CHOICE ::=
4467 -- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
4469 -- Note: although the grammar above allows only a range or a subtype
4470 -- mark, the parser in fact will accept any simple expression in place
4471 -- of a subtype mark. This means that the semantic analyzer must be able
4472 -- to deal with, and diagnose a simple expression other than a name for
4473 -- the right operand. This simplifies error recovery in the parser.
4475 -- The Alternatives field below is present only if there is more than
4476 -- one Membership_Choice present (which is legitimate only in Ada 2012
4477 -- mode) in which case Right_Opnd is Empty, and Alternatives contains
4478 -- the list of choices. In the tree passed to the back end, Alternatives
4479 -- is always No_List, and Right_Opnd is set (i.e. the expansion circuit
4480 -- expands out the complex set membership case using simple membership
4481 -- and equality operations).
4483 -- Should we rename Alternatives here to Membership_Choices ???
4486 -- Sloc points to IN
4487 -- Left_Opnd (Node2)
4488 -- Right_Opnd (Node3)
4489 -- Alternatives (List4) (set to No_List if only one set alternative)
4490 -- No_Minimize_Eliminate (Flag17)
4491 -- plus fields for expression
4494 -- Sloc points to NOT of NOT IN
4495 -- Left_Opnd (Node2)
4496 -- Right_Opnd (Node3)
4497 -- Alternatives (List4) (set to No_List if only one set alternative)
4498 -- No_Minimize_Eliminate (Flag17)
4499 -- plus fields for expression
4501 --------------------
4503 --------------------
4505 -- LOGICAL_OPERATOR ::= and | or | xor
4507 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
4509 -- BINARY_ADDING_OPERATOR ::= + | - | &
4511 -- UNARY_ADDING_OPERATOR ::= + | -
4513 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
4515 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
4517 -- Sprint syntax if Treat_Fixed_As_Integer is set:
4524 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
4525 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
4526 -- All handling of smalls for multiplication and division is handled
4527 -- by the front end (mod and rem result only from expansion). Gigi
4528 -- thus never needs to worry about small values (for other operators
4529 -- operating on fixed-point, e.g. addition, the small value does not
4530 -- have any semantic effect anyway, these are always integer operations.
4532 -- Gigi restriction: For all operators taking Boolean operands, the
4533 -- type is always Standard.Boolean. The expander inserts the required
4534 -- conversion operations where needed to ensure this is the case.
4537 -- Sloc points to AND
4538 -- Do_Length_Check (Flag4-Sem)
4539 -- plus fields for binary operator
4540 -- plus fields for expression
4543 -- Sloc points to OR
4544 -- Do_Length_Check (Flag4-Sem)
4545 -- plus fields for binary operator
4546 -- plus fields for expression
4549 -- Sloc points to XOR
4550 -- Do_Length_Check (Flag4-Sem)
4551 -- plus fields for binary operator
4552 -- plus fields for expression
4556 -- plus fields for binary operator
4557 -- plus fields for expression
4560 -- Sloc points to /=
4561 -- plus fields for binary operator
4562 -- plus fields for expression
4566 -- plus fields for binary operator
4567 -- plus fields for expression
4570 -- Sloc points to <=
4571 -- plus fields for binary operator
4572 -- plus fields for expression
4576 -- plus fields for binary operator
4577 -- plus fields for expression
4580 -- Sloc points to >=
4581 -- plus fields for binary operator
4582 -- plus fields for expression
4585 -- Sloc points to + (binary)
4586 -- plus fields for binary operator
4587 -- plus fields for expression
4590 -- Sloc points to - (binary)
4591 -- plus fields for binary operator
4592 -- plus fields for expression
4596 -- Is_Component_Left_Opnd (Flag13-Sem)
4597 -- Is_Component_Right_Opnd (Flag14-Sem)
4598 -- plus fields for binary operator
4599 -- plus fields for expression
4603 -- Treat_Fixed_As_Integer (Flag14-Sem)
4604 -- Rounded_Result (Flag18-Sem)
4605 -- plus fields for binary operator
4606 -- plus fields for expression
4610 -- Treat_Fixed_As_Integer (Flag14-Sem)
4611 -- Do_Division_Check (Flag13-Sem)
4612 -- Rounded_Result (Flag18-Sem)
4613 -- plus fields for binary operator
4614 -- plus fields for expression
4617 -- Sloc points to MOD
4618 -- Treat_Fixed_As_Integer (Flag14-Sem)
4619 -- Do_Division_Check (Flag13-Sem)
4620 -- plus fields for binary operator
4621 -- plus fields for expression
4624 -- Sloc points to REM
4625 -- Treat_Fixed_As_Integer (Flag14-Sem)
4626 -- Do_Division_Check (Flag13-Sem)
4627 -- plus fields for binary operator
4628 -- plus fields for expression
4631 -- Sloc points to **
4632 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
4633 -- plus fields for binary operator
4634 -- plus fields for expression
4637 -- Sloc points to + (unary)
4638 -- plus fields for unary operator
4639 -- plus fields for expression
4642 -- Sloc points to - (unary)
4643 -- plus fields for unary operator
4644 -- plus fields for expression
4647 -- Sloc points to ABS
4648 -- plus fields for unary operator
4649 -- plus fields for expression
4652 -- Sloc points to NOT
4653 -- plus fields for unary operator
4654 -- plus fields for expression
4656 -- See also shift operators in section B.2
4658 -- Note on fixed-point operations passed to Gigi: For adding operators,
4659 -- the semantics is to treat these simply as integer operations, with
4660 -- the small values being ignored (the bounds are already stored in
4661 -- units of small, so that constraint checking works as usual). For the
4662 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
4663 -- point operands if the Treat_Fixed_As_Integer flag is set and will
4664 -- thus treat these nodes in identical manner, ignoring small values.
4666 -- Note on equality/inequality tests for records. In the expanded tree,
4667 -- record comparisons are always expanded to be a series of component
4668 -- comparisons, so the back end will never see an equality or inequality
4669 -- operation with operands of a record type.
4671 -- Note on overflow handling: When the overflow checking mode is set to
4672 -- MINIMIZED or ELIMINATED, nodes for signed arithmetic operations may
4673 -- be modified to use a larger type for the operands and result. In
4674 -- the case where the computed range exceeds that of Long_Long_Integer,
4675 -- and we are running in ELIMINATED mode, the operator node will be
4676 -- changed to be a call to the appropriate routine in System.Bignums.
4678 -- Note: In Modify_Tree_For_C mode, we do not generate an N_Op_Mod node
4679 -- for signed integer types (since there is no equivalent operator in
4680 -- C). Instead we rewrite such an operation in terms of REM (which is
4681 -- % in C) and other C-available operators.
4683 ------------------------------------
4684 -- 4.5.7 Conditional Expressions --
4685 ------------------------------------
4687 -- CONDITIONAL_EXPRESSION ::= IF_EXPRESSION | CASE_EXPRESSION
4689 --------------------------
4690 -- 4.5.7 If Expression --
4691 --------------------------
4693 -- IF_EXPRESSION ::=
4694 -- if CONDITION then DEPENDENT_EXPRESSION
4695 -- {elsif CONDITION then DEPENDENT_EXPRESSION}
4696 -- [else DEPENDENT_EXPRESSION]
4698 -- DEPENDENT_EXPRESSION ::= EXPRESSION
4700 -- Note: if we have (IF x1 THEN x2 ELSIF x3 THEN x4 ELSE x5) then it
4701 -- is represented as (IF x1 THEN x2 ELSE (IF x3 THEN x4 ELSE x5)) and
4702 -- the Is_Elsif flag is set on the inner if expression.
4705 -- Sloc points to IF or ELSIF keyword
4706 -- Expressions (List1)
4707 -- Then_Actions (List2-Sem)
4708 -- Else_Actions (List3-Sem)
4709 -- Is_Elsif (Flag13) (set if comes from ELSIF)
4710 -- Do_Overflow_Check (Flag17-Sem)
4711 -- plus fields for expression
4713 -- Expressions here is a three-element list, whose first element is the
4714 -- condition, the second element is the dependent expression after THEN
4715 -- and the third element is the dependent expression after the ELSE
4716 -- (explicitly set to True if missing).
4718 -- Note: the Then_Actions and Else_Actions fields are always set to
4719 -- No_List in the tree passed to the back end. These are used only
4720 -- for temporary processing purposes in the expander. Even though they
4721 -- are semantic fields, their parent pointers are set because analysis
4722 -- of actions nodes in those lists may generate additional actions that
4723 -- need to know their insertion point (for example for the creation of
4724 -- transient scopes).
4726 -- Note: in the tree passed to the back end, if the result type is
4727 -- an unconstrained array, the if expression can only appears in the
4728 -- initializing expression of an object declaration (this avoids the
4729 -- back end having to create a variable length temporary on the fly).
4731 ----------------------------
4732 -- 4.5.7 Case Expression --
4733 ----------------------------
4735 -- CASE_EXPRESSION ::=
4736 -- case SELECTING_EXPRESSION is
4737 -- CASE_EXPRESSION_ALTERNATIVE
4738 -- {,CASE_EXPRESSION_ALTERNATIVE}
4740 -- Note that the Alternatives cannot include pragmas (this contrasts
4741 -- with the situation of case statements where pragmas are allowed).
4743 -- N_Case_Expression
4744 -- Sloc points to CASE
4745 -- Expression (Node3) (the selecting expression)
4746 -- Alternatives (List4) (the case expression alternatives)
4747 -- Do_Overflow_Check (Flag17-Sem)
4749 ----------------------------------------
4750 -- 4.5.7 Case Expression Alternative --
4751 ----------------------------------------
4753 -- CASE_EXPRESSION_ALTERNATIVE ::=
4754 -- when DISCRETE_CHOICE_LIST =>
4755 -- DEPENDENT_EXPRESSION
4757 -- N_Case_Expression_Alternative
4758 -- Sloc points to WHEN
4760 -- Discrete_Choices (List4)
4761 -- Expression (Node3)
4762 -- Has_SP_Choice (Flag15-Sem)
4764 -- Note: The Actions field temporarily holds any actions associated with
4765 -- evaluation of the Expression. During expansion of the case expression
4766 -- these actions are wrapped into an N_Expressions_With_Actions node
4767 -- replacing the original expression.
4769 -- Note: this node never appears in the tree passed to the back end,
4770 -- since the expander converts case expressions into case statements.
4772 ---------------------------------
4773 -- 4.5.8 Quantified Expression --
4774 ---------------------------------
4776 -- QUANTIFIED_EXPRESSION ::=
4777 -- for QUANTIFIER LOOP_PARAMETER_SPECIFICATION => PREDICATE
4778 -- | for QUANTIFIER ITERATOR_SPECIFICATION => PREDICATE
4780 -- QUANTIFIER ::= all | some
4782 -- At most one of (Iterator_Specification, Loop_Parameter_Specification)
4783 -- is present at a time, in which case the other one is empty.
4785 -- N_Quantified_Expression
4786 -- Sloc points to FOR
4787 -- Iterator_Specification (Node2)
4788 -- Loop_Parameter_Specification (Node4)
4789 -- Condition (Node1)
4790 -- All_Present (Flag15)
4792 --------------------------
4793 -- 4.6 Type Conversion --
4794 --------------------------
4796 -- TYPE_CONVERSION ::=
4797 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
4799 -- In the (NAME) case, the name is stored as the expression
4801 -- Note: the parser never generates a type conversion node, since it
4802 -- looks like an indexed component which is generated by preference.
4803 -- The semantic pass must correct this misidentification.
4805 -- Gigi handles conversions that involve no change in the root type,
4806 -- and also all conversions from integer to floating-point types.
4807 -- Conversions from floating-point to integer are only handled in
4808 -- the case where Float_Truncate flag set. Other conversions from
4809 -- floating-point to integer (involving rounding) and all conversions
4810 -- involving fixed-point types are handled by the expander.
4812 -- Sprint syntax if Float_Truncate set: X^(Y)
4813 -- Sprint syntax if Conversion_OK set X?(Y)
4814 -- Sprint syntax if both flags set X?^(Y)
4816 -- Note: If either the operand or result type is fixed-point, Gigi will
4817 -- only see a type conversion node with Conversion_OK set. The front end
4818 -- takes care of all handling of small's for fixed-point conversions.
4820 -- N_Type_Conversion
4821 -- Sloc points to first token of subtype mark
4822 -- Subtype_Mark (Node4)
4823 -- Expression (Node3)
4824 -- Do_Discriminant_Check (Flag3-Sem)
4825 -- Do_Length_Check (Flag4-Sem)
4826 -- Float_Truncate (Flag11-Sem)
4827 -- Do_Tag_Check (Flag13-Sem)
4828 -- Conversion_OK (Flag14-Sem)
4829 -- Do_Overflow_Check (Flag17-Sem)
4830 -- Rounded_Result (Flag18-Sem)
4831 -- plus fields for expression
4833 -- Note: if a range check is required, then the Do_Range_Check flag
4834 -- is set in the Expression with the check being done against the
4835 -- target type range (after the base type conversion, if any).
4837 -------------------------------
4838 -- 4.7 Qualified Expression --
4839 -------------------------------
4841 -- QUALIFIED_EXPRESSION ::=
4842 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
4844 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
4845 -- the expression, so the Expression field of this node always points
4846 -- to a parenthesized expression in this case (i.e. Paren_Count will
4847 -- always be non-zero for the referenced expression if it is not an
4850 -- N_Qualified_Expression
4851 -- Sloc points to apostrophe
4852 -- Subtype_Mark (Node4)
4853 -- Expression (Node3) expression or aggregate
4854 -- Is_Qualified_Universal_Literal (Flag4-Sem)
4855 -- plus fields for expression
4857 --------------------
4859 --------------------
4862 -- new [SUBPOOL_SPECIFICATION] SUBTYPE_INDICATION
4863 -- | new [SUBPOOL_SPECIFICATION] QUALIFIED_EXPRESSION
4865 -- SUBPOOL_SPECIFICATION ::= (subpool_handle_NAME)
4867 -- Sprint syntax (when storage pool present)
4868 -- new xxx (storage_pool = pool)
4870 -- new (subpool) xxx (storage_pool = pool)
4873 -- Sloc points to NEW
4874 -- Expression (Node3) subtype indication or qualified expression
4875 -- Subpool_Handle_Name (Node4) (set to Empty if not present)
4876 -- Storage_Pool (Node1-Sem)
4877 -- Procedure_To_Call (Node2-Sem)
4878 -- Alloc_For_BIP_Return (Flag1-Sem)
4879 -- Null_Exclusion_Present (Flag11)
4880 -- No_Initialization (Flag13-Sem)
4881 -- Is_Static_Coextension (Flag14-Sem)
4882 -- Do_Storage_Check (Flag17-Sem)
4883 -- Is_Dynamic_Coextension (Flag18-Sem)
4884 -- plus fields for expression
4886 -- Note: like all nodes, the N_Allocator has the Comes_From_Source flag.
4887 -- This flag has a special function in conjunction with the restriction
4888 -- No_Implicit_Heap_Allocations, which will be triggered if this flag
4889 -- is not set. This means that if a source allocator is replaced with
4890 -- a constructed allocator, the Comes_From_Source flag should be copied
4891 -- to the newly created allocator.
4893 ---------------------------------
4894 -- 5.1 Sequence Of Statements --
4895 ---------------------------------
4897 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
4899 -- Note: Although the parser will not accept a declaration as a
4900 -- statement, the semantic analyzer may insert declarations (e.g.
4901 -- declarations of implicit types needed for execution of other
4902 -- statements) into a sequence of statements, so the code generator
4903 -- should be prepared to accept a declaration where a statement is
4904 -- expected. Note also that pragmas can appear as statements.
4906 --------------------
4908 --------------------
4911 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
4913 -- There is no explicit node in the tree for a statement. Instead, the
4914 -- individual statement appears directly. Labels are treated as a
4915 -- kind of statement, i.e. they are linked into a statement list at
4916 -- the point they appear, so the labeled statement appears following
4917 -- the label or labels in the statement list.
4919 ---------------------------
4920 -- 5.1 Simple Statement --
4921 ---------------------------
4923 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
4924 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
4925 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
4926 -- | SIMPLE_RETURN_STATEMENT | ENTRY_CALL_STATEMENT
4927 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
4928 -- | ABORT_STATEMENT | RAISE_STATEMENT
4931 -----------------------------
4932 -- 5.1 Compound Statement --
4933 -----------------------------
4935 -- COMPOUND_STATEMENT ::=
4936 -- IF_STATEMENT | CASE_STATEMENT
4937 -- | LOOP_STATEMENT | BLOCK_STATEMENT
4938 -- | EXTENDED_RETURN_STATEMENT
4939 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
4941 -------------------------
4942 -- 5.1 Null Statement --
4943 -------------------------
4945 -- NULL_STATEMENT ::= null;
4948 -- Sloc points to NULL
4954 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
4956 -- Note that the occurrence of a label is not a defining identifier,
4957 -- but rather a referencing occurrence. The defining occurrence is
4958 -- in the implicit label declaration which occurs in the innermost
4962 -- Sloc points to <<
4963 -- Identifier (Node1) direct name of statement identifier
4964 -- Exception_Junk (Flag8-Sem)
4966 -- Note: Before Ada 2012, a label is always followed by a statement,
4967 -- and this is true in the tree even in Ada 2012 mode (the parser
4968 -- inserts a null statement marked with Comes_From_Source False).
4970 -------------------------------
4971 -- 5.1 Statement Identifier --
4972 -------------------------------
4974 -- STATEMENT_IDENTIFIER ::= DIRECT_NAME
4976 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
4977 -- (not an OPERATOR_SYMBOL)
4979 -------------------------------
4980 -- 5.2 Assignment Statement --
4981 -------------------------------
4983 -- ASSIGNMENT_STATEMENT ::=
4984 -- variable_NAME := EXPRESSION;
4986 -- N_Assignment_Statement
4987 -- Sloc points to :=
4989 -- Expression (Node3)
4990 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
4991 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
4992 -- Do_Discriminant_Check (Flag3-Sem)
4993 -- Do_Length_Check (Flag4-Sem)
4994 -- Forwards_OK (Flag5-Sem)
4995 -- Backwards_OK (Flag6-Sem)
4996 -- No_Ctrl_Actions (Flag7-Sem)
4997 -- Has_Target_Names (Flag8-Sem)
4998 -- Is_Elaboration_Code (Flag9-Sem)
4999 -- Do_Tag_Check (Flag13-Sem)
5000 -- Componentwise_Assignment (Flag14-Sem)
5001 -- Suppress_Assignment_Checks (Flag18-Sem)
5003 -- Note: if a range check is required, then the Do_Range_Check flag
5004 -- is set in the Expression (right hand side), with the check being
5005 -- done against the type of the Name (left hand side).
5007 -- Note: the back end places some restrictions on the form of the
5008 -- Expression field. If the object being assigned to is Atomic, then
5009 -- the Expression may not have the form of an aggregate (since this
5010 -- might cause the back end to generate separate assignments). In this
5011 -- case the front end must generate an extra temporary and initialize
5012 -- this temporary as required (the temporary itself is not atomic).
5020 -- Etype (Node5-Sem)
5022 -- Note (Ada 2020): node is used during analysis as a placeholder for
5023 -- the value of the LHS of the enclosing assignment statement. Node is
5024 -- eventually rewritten together with enclosing assignment, and backends
5025 -- are not aware of it.
5027 -----------------------
5028 -- 5.3 If Statement --
5029 -----------------------
5032 -- if CONDITION then
5033 -- SEQUENCE_OF_STATEMENTS
5034 -- {elsif CONDITION then
5035 -- SEQUENCE_OF_STATEMENTS}
5037 -- SEQUENCE_OF_STATEMENTS]
5040 -- Gigi restriction: This expander ensures that the type of the
5041 -- Condition fields is always Standard.Boolean, even if the type
5042 -- in the source is some non-standard boolean type.
5045 -- Sloc points to IF
5046 -- Condition (Node1)
5047 -- Then_Statements (List2)
5048 -- Elsif_Parts (List3) (set to No_List if none present)
5049 -- Else_Statements (List4) (set to No_List if no else part present)
5050 -- End_Span (Uint5) (set to Uint_0 if expander generated)
5051 -- From_Conditional_Expression (Flag1-Sem)
5054 -- Sloc points to ELSIF
5055 -- Condition (Node1)
5056 -- Then_Statements (List2)
5057 -- Condition_Actions (List3-Sem)
5059 --------------------
5061 --------------------
5063 -- CONDITION ::= boolean_EXPRESSION
5065 -------------------------
5066 -- 5.4 Case Statement --
5067 -------------------------
5069 -- CASE_STATEMENT ::=
5070 -- case EXPRESSION is
5071 -- CASE_STATEMENT_ALTERNATIVE
5072 -- {CASE_STATEMENT_ALTERNATIVE}
5075 -- Note: the Alternatives can contain pragmas. These only occur at
5076 -- the start of the list, since any pragmas occurring after the first
5077 -- alternative are absorbed into the corresponding statement sequence.
5080 -- Sloc points to CASE
5081 -- Expression (Node3)
5082 -- Alternatives (List4)
5083 -- End_Span (Uint5) (set to Uint_0 if expander generated)
5084 -- From_Conditional_Expression (Flag1-Sem)
5086 -- Note: Before Ada 2012, a pragma in a statement sequence is always
5087 -- followed by a statement, and this is true in the tree even in Ada
5088 -- 2012 mode (the parser inserts a null statement marked with the flag
5089 -- Comes_From_Source False).
5091 -------------------------------------
5092 -- 5.4 Case Statement Alternative --
5093 -------------------------------------
5095 -- CASE_STATEMENT_ALTERNATIVE ::=
5096 -- when DISCRETE_CHOICE_LIST =>
5097 -- SEQUENCE_OF_STATEMENTS
5099 -- N_Case_Statement_Alternative
5100 -- Sloc points to WHEN
5101 -- Discrete_Choices (List4)
5102 -- Statements (List3)
5103 -- Has_SP_Choice (Flag15-Sem)
5105 -- Note: in the list of Discrete_Choices, the tree passed to the back
5106 -- end does not have choice entries corresponding to names of statically
5107 -- predicated subtypes. Such entries are always expanded out to the list
5108 -- of equivalent values or ranges. The ASIS tree generated in -gnatct
5109 -- mode does not have this expansion, and has the original choices.
5111 -------------------------
5112 -- 5.5 Loop Statement --
5113 -------------------------
5115 -- LOOP_STATEMENT ::=
5116 -- [loop_STATEMENT_IDENTIFIER :]
5117 -- [ITERATION_SCHEME] loop
5118 -- SEQUENCE_OF_STATEMENTS
5119 -- end loop [loop_IDENTIFIER];
5121 -- Note: The occurrence of a loop label is not a defining identifier
5122 -- but rather a referencing occurrence. The defining occurrence is in
5123 -- the implicit label declaration which occurs in the innermost
5126 -- Note: there is always a loop statement identifier present in the
5127 -- tree, even if none was given in the source. In the case where no loop
5128 -- identifier is given in the source, the parser creates a name of the
5129 -- form _Loop_n, where n is a decimal integer (the two underlines ensure
5130 -- that the loop names created in this manner do not conflict with any
5131 -- user defined identifiers), and the flag Has_Created_Identifier is set
5132 -- to True. The only exception to the rule that all loop statement nodes
5133 -- have identifiers occurs for loops constructed by the expander, and
5134 -- the semantic analyzer will create and supply dummy loop identifiers
5138 -- Sloc points to LOOP
5139 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
5140 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
5141 -- Statements (List3)
5142 -- End_Label (Node4)
5143 -- Is_OpenAcc_Environment (Flag13-Sem)
5144 -- Is_OpenAcc_Loop (Flag14-Sem)
5145 -- Has_Created_Identifier (Flag15)
5146 -- Is_Null_Loop (Flag16)
5147 -- Suppress_Loop_Warnings (Flag17)
5149 -- Note: the parser fills in the Identifier field if there is an
5150 -- explicit loop identifier. Otherwise the parser leaves this field
5151 -- set to Empty, and then the semantic processing for a loop statement
5152 -- creates an identifier, setting the Has_Created_Identifier flag to
5153 -- True. So after semantic analysis, the Identifier is always set,
5154 -- referencing an identifier whose entity has an Ekind of E_Loop.
5156 ---------------------------
5157 -- 5.5 Iteration Scheme --
5158 ---------------------------
5160 -- ITERATION_SCHEME ::=
5162 -- | for LOOP_PARAMETER_SPECIFICATION
5163 -- | for ITERATOR_SPECIFICATION
5165 -- At most one of (Iterator_Specification, Loop_Parameter_Specification)
5166 -- is present at a time, in which case the other one is empty. Both are
5167 -- empty in the case of a WHILE loop.
5169 -- Gigi restriction: The expander ensures that the type of the Condition
5170 -- field is always Standard.Boolean, even if the type in the source is
5171 -- some non-standard boolean type.
5173 -- N_Iteration_Scheme
5174 -- Sloc points to WHILE or FOR
5175 -- Condition (Node1) (set to Empty if FOR case)
5176 -- Condition_Actions (List3-Sem)
5177 -- Iterator_Specification (Node2) (set to Empty if WHILE case)
5178 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
5180 ---------------------------------------
5181 -- 5.5 Loop Parameter Specification --
5182 ---------------------------------------
5184 -- LOOP_PARAMETER_SPECIFICATION ::=
5185 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
5187 -- N_Loop_Parameter_Specification
5188 -- Sloc points to first identifier
5189 -- Defining_Identifier (Node1)
5190 -- Reverse_Present (Flag15)
5191 -- Discrete_Subtype_Definition (Node4)
5193 -----------------------------------
5194 -- 5.5.1 Iterator Specification --
5195 -----------------------------------
5197 -- ITERATOR_SPECIFICATION ::=
5198 -- DEFINING_IDENTIFIER in [reverse] NAME
5199 -- | DEFINING_IDENTIFIER [: SUBTYPE_INDICATION] of [reverse] NAME
5201 -- N_Iterator_Specification
5202 -- Sloc points to defining identifier
5203 -- Defining_Identifier (Node1)
5205 -- Reverse_Present (Flag15)
5206 -- Of_Present (Flag16)
5207 -- Subtype_Indication (Node5)
5209 -- Note: The Of_Present flag distinguishes the two forms
5211 --------------------------
5212 -- 5.6 Block Statement --
5213 --------------------------
5215 -- BLOCK_STATEMENT ::=
5216 -- [block_STATEMENT_IDENTIFIER:]
5218 -- DECLARATIVE_PART]
5220 -- HANDLED_SEQUENCE_OF_STATEMENTS
5221 -- end [block_IDENTIFIER];
5223 -- Note that the occurrence of a block identifier is not a defining
5224 -- identifier, but rather a referencing occurrence. The defining
5225 -- occurrence is an E_Block entity declared by the implicit label
5226 -- declaration which occurs in the innermost enclosing block statement
5227 -- or body; the block identifier denotes that E_Block.
5229 -- For block statements that come from source code, there is always a
5230 -- block statement identifier present in the tree, denoting an E_Block.
5231 -- In the case where no block identifier is given in the source,
5232 -- the parser creates a name of the form B_n, where n is a decimal
5233 -- integer, and the flag Has_Created_Identifier is set to True. Blocks
5234 -- constructed by the expander usually have no identifier, and no
5235 -- corresponding entity.
5237 -- Note: the block statement created for an extended return statement
5238 -- has an entity, and this entity is an E_Return_Statement, rather than
5239 -- the usual E_Block.
5241 -- Note: Exception_Junk is set for the wrapping blocks created during
5242 -- local raise optimization (Exp_Ch11.Expand_Local_Exception_Handlers).
5244 -- Note: from a control flow viewpoint, a block statement defines an
5245 -- extended basic block, i.e. the entry of the block dominates every
5246 -- statement in the sequence. When generating new statements with
5247 -- exception handlers in the expander at the end of a sequence that
5248 -- comes from source code, it can be necessary to wrap them all in a
5249 -- block statement in order to expose the implicit control flow to
5250 -- gigi and thus prevent it from issuing bogus control flow warnings.
5252 -- N_Block_Statement
5253 -- Sloc points to DECLARE or BEGIN
5254 -- Identifier (Node1) block direct name (set to Empty if not present)
5255 -- Declarations (List2) (set to No_List if no DECLARE part)
5256 -- Handled_Statement_Sequence (Node4)
5257 -- Activation_Chain_Entity (Node3-Sem)
5258 -- Cleanup_Actions (List5-Sem)
5259 -- Has_Created_Identifier (Flag15)
5260 -- Is_Asynchronous_Call_Block (Flag7)
5261 -- Is_Task_Allocation_Block (Flag6)
5262 -- Exception_Junk (Flag8-Sem)
5263 -- Is_Abort_Block (Flag4-Sem)
5264 -- Is_Finalization_Wrapper (Flag9-Sem)
5265 -- Is_Initialization_Block (Flag1-Sem)
5266 -- Is_Task_Master (Flag5-Sem)
5268 -------------------------
5269 -- 5.7 Exit Statement --
5270 -------------------------
5272 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
5274 -- Gigi restriction: The expander ensures that the type of the Condition
5275 -- field is always Standard.Boolean, even if the type in the source is
5276 -- some non-standard boolean type.
5279 -- Sloc points to EXIT
5280 -- Name (Node2) (set to Empty if no loop name present)
5281 -- Condition (Node1) (set to Empty if no WHEN part present)
5282 -- Next_Exit_Statement (Node3-Sem): Next exit on chain
5284 -------------------------
5285 -- 5.9 Goto Statement --
5286 -------------------------
5288 -- GOTO_STATEMENT ::= goto label_NAME;
5291 -- Sloc points to GOTO
5293 -- Exception_Junk (Flag8-Sem)
5295 ---------------------------------
5296 -- 6.1 Subprogram Declaration --
5297 ---------------------------------
5299 -- SUBPROGRAM_DECLARATION ::=
5300 -- SUBPROGRAM_SPECIFICATION
5301 -- [ASPECT_SPECIFICATIONS];
5303 -- N_Subprogram_Declaration
5304 -- Sloc points to FUNCTION or PROCEDURE
5305 -- Specification (Node1)
5306 -- Body_To_Inline (Node3-Sem)
5307 -- Corresponding_Body (Node5-Sem)
5308 -- Parent_Spec (Node4-Sem)
5309 -- Is_Entry_Barrier_Function (Flag8-Sem)
5310 -- Is_Task_Body_Procedure (Flag1-Sem)
5312 ------------------------------------------
5313 -- 6.1 Abstract Subprogram Declaration --
5314 ------------------------------------------
5316 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
5317 -- SUBPROGRAM_SPECIFICATION is abstract
5318 -- [ASPECT_SPECIFICATIONS];
5320 -- N_Abstract_Subprogram_Declaration
5321 -- Sloc points to ABSTRACT
5322 -- Specification (Node1)
5324 -----------------------------------
5325 -- 6.1 Subprogram Specification --
5326 -----------------------------------
5328 -- SUBPROGRAM_SPECIFICATION ::=
5329 -- [[not] overriding]
5330 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
5331 -- | [[not] overriding]
5332 -- function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
5334 -- Note: there are no separate nodes for the profiles, instead the
5335 -- information appears directly in the following nodes.
5337 -- N_Function_Specification
5338 -- Sloc points to FUNCTION
5339 -- Defining_Unit_Name (Node1) (the designator)
5340 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5341 -- Null_Exclusion_Present (Flag11)
5342 -- Result_Definition (Node4) for result subtype
5343 -- Generic_Parent (Node5-Sem)
5344 -- Must_Override (Flag14) set if overriding indicator present
5345 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5347 -- N_Procedure_Specification
5348 -- Sloc points to PROCEDURE
5349 -- Defining_Unit_Name (Node1)
5350 -- Null_Statement (Node2-Sem) NULL statement for body, if Null_Present
5351 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5352 -- Generic_Parent (Node5-Sem)
5353 -- Null_Present (Flag13) set for null procedure case (Ada 2005 feature)
5354 -- Must_Override (Flag14) set if overriding indicator present
5355 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5357 -- Note: overriding indicator is an Ada 2005 feature
5359 ---------------------
5360 -- 6.1 Designator --
5361 ---------------------
5364 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
5366 -- Designators that are simply identifiers or operator symbols appear
5367 -- directly in the tree in this form. The following node is used only
5368 -- in the case where the designator has a parent unit name component.
5371 -- Sloc points to period
5372 -- Name (Node2) holds the parent unit name
5373 -- Identifier (Node1)
5375 -- Note: Name is always non-Empty, since this node is only used for the
5376 -- case where a parent library unit package name is present.
5378 -- Note that the identifier can also be an operator symbol here
5380 ------------------------------
5381 -- 6.1 Defining Designator --
5382 ------------------------------
5384 -- DEFINING_DESIGNATOR ::=
5385 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
5387 -------------------------------------
5388 -- 6.1 Defining Program Unit Name --
5389 -------------------------------------
5391 -- DEFINING_PROGRAM_UNIT_NAME ::=
5392 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
5394 -- The parent unit name is present only in the case of a child unit name
5395 -- (permissible only for Ada 95 for a library level unit, i.e. a unit
5396 -- at scope level one). If no such name is present, the defining program
5397 -- unit name is represented simply as the defining identifier. In the
5398 -- child unit case, the following node is used to represent the child
5401 -- N_Defining_Program_Unit_Name
5402 -- Sloc points to period
5403 -- Name (Node2) holds the parent unit name
5404 -- Defining_Identifier (Node1)
5406 -- Note: Name is always non-Empty, since this node is only used for the
5407 -- case where a parent unit name is present.
5409 --------------------------
5410 -- 6.1 Operator Symbol --
5411 --------------------------
5413 -- OPERATOR_SYMBOL ::= STRING_LITERAL
5415 -- Note: the fields of the N_Operator_Symbol node are laid out to match
5416 -- the corresponding fields of an N_Character_Literal node. This allows
5417 -- easy conversion of the operator symbol node into a character literal
5418 -- node in the case where a string constant of the form of an operator
5419 -- symbol is scanned out as such, but turns out semantically to be a
5420 -- string literal that is not an operator. For details see Sinfo.CN.
5421 -- Change_Operator_Symbol_To_String_Literal.
5423 -- N_Operator_Symbol
5424 -- Sloc points to literal
5425 -- Chars (Name1) contains the Name_Id for the operator symbol
5426 -- Strval (Str3) Id of string value. This is used if the operator
5427 -- symbol turns out to be a normal string after all.
5428 -- Entity (Node4-Sem)
5429 -- Associated_Node (Node4-Sem)
5430 -- Etype (Node5-Sem)
5431 -- Has_Private_View (Flag11-Sem) set in generic units
5433 -- Note: the Strval field may be set to No_String for generated
5434 -- operator symbols that are known not to be string literals
5437 -----------------------------------
5438 -- 6.1 Defining Operator Symbol --
5439 -----------------------------------
5441 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
5443 -- A defining operator symbol is an entity, which has additional
5444 -- fields depending on the setting of the Ekind field. These
5445 -- additional fields are defined (and access subprograms declared)
5446 -- in package Einfo.
5448 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
5449 -- are deliberately laid out to match the layout of fields in an
5450 -- ordinary N_Operator_Symbol node allowing for easy alteration of
5451 -- an operator symbol node into a defining operator symbol node.
5452 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
5453 -- for further details.
5455 -- N_Defining_Operator_Symbol
5456 -- Sloc points to literal
5457 -- Chars (Name1) contains the Name_Id for the operator symbol
5458 -- Next_Entity (Node2-Sem)
5459 -- Scope (Node3-Sem)
5460 -- Etype (Node5-Sem)
5462 ----------------------------
5463 -- 6.1 Parameter Profile --
5464 ----------------------------
5466 -- PARAMETER_PROFILE ::= [FORMAL_PART]
5468 ---------------------------------------
5469 -- 6.1 Parameter and Result Profile --
5470 ---------------------------------------
5472 -- PARAMETER_AND_RESULT_PROFILE ::=
5473 -- [FORMAL_PART] return [NULL_EXCLUSION] SUBTYPE_MARK
5474 -- | [FORMAL_PART] return ACCESS_DEFINITION
5476 -- There is no explicit node in the tree for a parameter and result
5477 -- profile. Instead the information appears directly in the parent.
5479 ----------------------
5480 -- 6.1 Formal Part --
5481 ----------------------
5484 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
5486 ----------------------------------
5487 -- 6.1 Parameter Specification --
5488 ----------------------------------
5490 -- PARAMETER_SPECIFICATION ::=
5491 -- DEFINING_IDENTIFIER_LIST : [ALIASED] MODE [NULL_EXCLUSION]
5492 -- SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
5493 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
5494 -- [:= DEFAULT_EXPRESSION]
5496 -- Although the syntax allows multiple identifiers in the list, the
5497 -- semantics is as though successive specifications were given with
5498 -- identical type definition and expression components. To simplify
5499 -- semantic processing, the parser represents a multiple declaration
5500 -- case as a sequence of single Specifications, using the More_Ids and
5501 -- Prev_Ids flags to preserve the original source form as described
5502 -- in the section on "Handling of Defining Identifier Lists".
5504 -- ALIASED can only be present in Ada 2012 mode
5506 -- N_Parameter_Specification
5507 -- Sloc points to first identifier
5508 -- Defining_Identifier (Node1)
5509 -- Aliased_Present (Flag4)
5510 -- In_Present (Flag15)
5511 -- Out_Present (Flag17)
5512 -- Null_Exclusion_Present (Flag11)
5513 -- Parameter_Type (Node2) subtype mark or access definition
5514 -- Expression (Node3) (set to Empty if no default expression present)
5515 -- Do_Accessibility_Check (Flag13-Sem)
5516 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5517 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5518 -- Default_Expression (Node5-Sem)
5524 -- MODE ::= [in] | in out | out
5526 -- There is no explicit node in the tree for the Mode. Instead the
5527 -- In_Present and Out_Present flags are set in the parent node to
5528 -- record the presence of keywords specifying the mode.
5530 --------------------------
5531 -- 6.3 Subprogram Body --
5532 --------------------------
5534 -- SUBPROGRAM_BODY ::=
5535 -- SUBPROGRAM_SPECIFICATION [ASPECT_SPECIFICATIONS] is
5538 -- HANDLED_SEQUENCE_OF_STATEMENTS
5539 -- end [DESIGNATOR];
5541 -- N_Subprogram_Body
5542 -- Sloc points to FUNCTION or PROCEDURE
5543 -- Specification (Node1)
5544 -- Declarations (List2)
5545 -- Handled_Statement_Sequence (Node4)
5546 -- Activation_Chain_Entity (Node3-Sem)
5547 -- Corresponding_Spec (Node5-Sem)
5548 -- Acts_As_Spec (Flag4-Sem)
5549 -- Bad_Is_Detected (Flag15) used only by parser
5550 -- Do_Storage_Check (Flag17-Sem)
5551 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
5552 -- Is_Entry_Barrier_Function (Flag8-Sem)
5553 -- Is_Protected_Subprogram_Body (Flag7-Sem)
5554 -- Is_Task_Body_Procedure (Flag1-Sem)
5555 -- Is_Task_Master (Flag5-Sem)
5556 -- Was_Attribute_Reference (Flag2-Sem)
5557 -- Was_Expression_Function (Flag18-Sem)
5558 -- Was_Originally_Stub (Flag13-Sem)
5560 -----------------------------------
5561 -- 6.4 Procedure Call Statement --
5562 -----------------------------------
5564 -- PROCEDURE_CALL_STATEMENT ::=
5565 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
5567 -- Note: the reason that a procedure call has expression fields is that
5568 -- it semantically resembles an expression, e.g. overloading is allowed
5569 -- and a type is concocted for semantic processing purposes. Certain of
5570 -- these fields, such as Parens are not relevant, but it is easier to
5571 -- just supply all of them together.
5573 -- N_Procedure_Call_Statement
5574 -- Sloc points to first token of name or prefix
5575 -- Name (Node2) stores name or prefix
5576 -- Parameter_Associations (List3) (set to No_List if no
5577 -- actual parameter part)
5578 -- First_Named_Actual (Node4-Sem)
5579 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
5580 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
5581 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
5582 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
5583 -- No_Elaboration_Check (Flag4-Sem)
5584 -- Do_Tag_Check (Flag13-Sem)
5585 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
5586 -- plus fields for expression
5588 -- If any IN parameter requires a range check, then the corresponding
5589 -- argument expression has the Do_Range_Check flag set, and the range
5590 -- check is done against the formal type. Note that this argument
5591 -- expression may appear directly in the Parameter_Associations list,
5592 -- or may be a descendant of an N_Parameter_Association node that
5593 -- appears in this list.
5595 ------------------------
5596 -- 6.4 Function Call --
5597 ------------------------
5599 -- FUNCTION_CALL ::=
5600 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
5602 -- Note: the parser may generate an indexed component node or simply
5603 -- a name node instead of a function call node. The semantic pass must
5604 -- correct this misidentification.
5607 -- Sloc points to first token of name or prefix
5608 -- Name (Node2) stores name or prefix
5609 -- Parameter_Associations (List3) (set to No_List if no
5610 -- actual parameter part)
5611 -- First_Named_Actual (Node4-Sem)
5612 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
5613 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
5614 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
5615 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
5616 -- No_Elaboration_Check (Flag4-Sem)
5617 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
5618 -- Do_Tag_Check (Flag13-Sem)
5619 -- No_Side_Effect_Removal (Flag17-Sem)
5620 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
5621 -- plus fields for expression
5623 --------------------------------
5624 -- 6.4 Actual Parameter Part --
5625 --------------------------------
5627 -- ACTUAL_PARAMETER_PART ::=
5628 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
5630 --------------------------------
5631 -- 6.4 Parameter Association --
5632 --------------------------------
5634 -- PARAMETER_ASSOCIATION ::=
5635 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
5637 -- Note: the N_Parameter_Association node is built only if a formal
5638 -- parameter selector name is present, otherwise the parameter
5639 -- association appears in the tree simply as the node for the
5640 -- explicit actual parameter.
5642 -- N_Parameter_Association
5643 -- Sloc points to formal parameter
5644 -- Selector_Name (Node2) (always non-Empty)
5645 -- Explicit_Actual_Parameter (Node3)
5646 -- Next_Named_Actual (Node4-Sem)
5647 -- Is_Accessibility_Actual (Flag13-Sem)
5649 ---------------------------
5650 -- 6.4 Actual Parameter --
5651 ---------------------------
5653 -- EXPLICIT_ACTUAL_PARAMETER ::=
5654 -- EXPRESSION | variable_NAME | REDUCTION_EXPRESSION_PARAMETER
5656 ---------------------------
5657 -- 6.5 Return Statement --
5658 ---------------------------
5660 -- SIMPLE_RETURN_STATEMENT ::= return [EXPRESSION];
5662 -- EXTENDED_RETURN_STATEMENT ::=
5663 -- return DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
5664 -- [:= EXPRESSION] [do
5665 -- HANDLED_SEQUENCE_OF_STATEMENTS
5668 -- RETURN_SUBTYPE_INDICATION ::= SUBTYPE_INDICATION | ACCESS_DEFINITION
5670 -- The term "return statement" is defined in 6.5 to mean either a
5671 -- SIMPLE_RETURN_STATEMENT or an EXTENDED_RETURN_STATEMENT. We avoid
5672 -- the use of this term, since it used to mean someting else in earlier
5675 -- N_Simple_Return_Statement
5676 -- Sloc points to RETURN
5677 -- Return_Statement_Entity (Node5-Sem)
5678 -- Expression (Node3) (set to Empty if no expression present)
5679 -- Storage_Pool (Node1-Sem)
5680 -- Procedure_To_Call (Node2-Sem)
5681 -- Do_Tag_Check (Flag13-Sem)
5682 -- By_Ref (Flag5-Sem)
5683 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
5685 -- Note: Return_Statement_Entity points to an E_Return_Statement
5687 -- If a range check is required, then Do_Range_Check is set on the
5688 -- Expression. The check is against the return subtype of the function.
5690 -- N_Extended_Return_Statement
5691 -- Sloc points to RETURN
5692 -- Return_Statement_Entity (Node5-Sem)
5693 -- Return_Object_Declarations (List3)
5694 -- Handled_Statement_Sequence (Node4) (set to Empty if not present)
5695 -- Storage_Pool (Node1-Sem)
5696 -- Procedure_To_Call (Node2-Sem)
5697 -- Do_Tag_Check (Flag13-Sem)
5698 -- By_Ref (Flag5-Sem)
5700 -- Note: Return_Statement_Entity points to an E_Return_Statement.
5702 -- Note that Return_Object_Declarations is a list containing the
5703 -- N_Object_Declaration -- see comment on this field above.
5705 -- The declared object will have Is_Return_Object = True.
5707 -- There is no such syntactic category as return_object_declaration
5708 -- in the RM. Return_Object_Declarations represents this portion of
5709 -- the syntax for EXTENDED_RETURN_STATEMENT:
5710 -- DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
5713 -- There are two entities associated with an extended_return_statement:
5714 -- the Return_Statement_Entity represents the statement itself,
5715 -- and the Defining_Identifier of the Object_Declaration in
5716 -- Return_Object_Declarations represents the object being
5717 -- returned. N_Simple_Return_Statement has only the former.
5719 ------------------------------
5720 -- 6.8 Expression Function --
5721 ------------------------------
5723 -- EXPRESSION_FUNCTION ::=
5724 -- FUNCTION SPECIFICATION IS (EXPRESSION)
5725 -- [ASPECT_SPECIFICATIONS];
5727 -- N_Expression_Function
5728 -- Sloc points to FUNCTION
5729 -- Specification (Node1)
5730 -- Expression (Node3)
5731 -- Corresponding_Spec (Node5-Sem)
5733 ------------------------------
5734 -- 7.1 Package Declaration --
5735 ------------------------------
5737 -- PACKAGE_DECLARATION ::=
5738 -- PACKAGE_SPECIFICATION;
5740 -- Note: the activation chain entity for a package spec is used for
5741 -- all tasks declared in the package spec, or in the package body.
5743 -- N_Package_Declaration
5744 -- Sloc points to PACKAGE
5745 -- Specification (Node1)
5746 -- Corresponding_Body (Node5-Sem)
5747 -- Parent_Spec (Node4-Sem)
5748 -- Activation_Chain_Entity (Node3-Sem)
5750 --------------------------------
5751 -- 7.1 Package Specification --
5752 --------------------------------
5754 -- PACKAGE_SPECIFICATION ::=
5755 -- package DEFINING_PROGRAM_UNIT_NAME
5756 -- [ASPECT_SPECIFICATIONS]
5758 -- {BASIC_DECLARATIVE_ITEM}
5760 -- {BASIC_DECLARATIVE_ITEM}]
5761 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
5763 -- N_Package_Specification
5764 -- Sloc points to PACKAGE
5765 -- Defining_Unit_Name (Node1)
5766 -- Visible_Declarations (List2)
5767 -- Private_Declarations (List3) (set to No_List if no private
5769 -- End_Label (Node4)
5770 -- Generic_Parent (Node5-Sem)
5771 -- Limited_View_Installed (Flag18-Sem)
5773 -----------------------
5774 -- 7.1 Package Body --
5775 -----------------------
5778 -- package body DEFINING_PROGRAM_UNIT_NAME
5779 -- [ASPECT_SPECIFICATIONS]
5783 -- HANDLED_SEQUENCE_OF_STATEMENTS]
5784 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
5787 -- Sloc points to PACKAGE
5788 -- Defining_Unit_Name (Node1)
5789 -- Declarations (List2)
5790 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
5791 -- Corresponding_Spec (Node5-Sem)
5792 -- Was_Originally_Stub (Flag13-Sem)
5794 -- Note: if a source level package does not contain a handled sequence
5795 -- of statements, then the parser supplies a dummy one with a null
5796 -- sequence of statements. Comes_From_Source will be False in this
5797 -- constructed sequence. The reason we need this is for the End_Label
5798 -- field in the HSS.
5800 -----------------------------------
5801 -- 7.4 Private Type Declaration --
5802 -----------------------------------
5804 -- PRIVATE_TYPE_DECLARATION ::=
5805 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
5806 -- is [[abstract] tagged] [limited] private
5807 -- [ASPECT_SPECIFICATIONS];
5809 -- Note: TAGGED is not permitted in Ada 83 mode
5811 -- N_Private_Type_Declaration
5812 -- Sloc points to TYPE
5813 -- Defining_Identifier (Node1)
5814 -- Discriminant_Specifications (List4) (set to No_List if no
5815 -- discriminant part)
5816 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5817 -- Abstract_Present (Flag4)
5818 -- Tagged_Present (Flag15)
5819 -- Limited_Present (Flag17)
5821 ----------------------------------------
5822 -- 7.4 Private Extension Declaration --
5823 ----------------------------------------
5825 -- PRIVATE_EXTENSION_DECLARATION ::=
5826 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
5827 -- [abstract] [limited | synchronized]
5828 -- new ancestor_SUBTYPE_INDICATION [and INTERFACE_LIST]
5829 -- with private [ASPECT_SPECIFICATIONS];
5831 -- Note: LIMITED, and private extension declarations are not allowed
5834 -- N_Private_Extension_Declaration
5835 -- Sloc points to TYPE
5836 -- Defining_Identifier (Node1)
5837 -- Uninitialized_Variable (Node3-Sem)
5838 -- Discriminant_Specifications (List4) (set to No_List if no
5839 -- discriminant part)
5840 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5841 -- Abstract_Present (Flag4)
5842 -- Limited_Present (Flag17)
5843 -- Synchronized_Present (Flag7)
5844 -- Subtype_Indication (Node5)
5845 -- Interface_List (List2) (set to No_List if none)
5847 ---------------------
5848 -- 8.4 Use Clause --
5849 ---------------------
5851 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
5853 -----------------------------
5854 -- 8.4 Use Package Clause --
5855 -----------------------------
5857 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
5859 -- N_Use_Package_Clause
5860 -- Sloc points to USE
5861 -- Prev_Use_Clause (Node1-Sem)
5863 -- Next_Use_Clause (Node3-Sem)
5864 -- Associated_Node (Node4-Sem)
5865 -- Hidden_By_Use_Clause (Elist5-Sem)
5866 -- Is_Effective_Use_Clause (Flag1)
5867 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5868 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5870 --------------------------
5871 -- 8.4 Use Type Clause --
5872 --------------------------
5874 -- USE_TYPE_CLAUSE ::= use [ALL] type SUBTYPE_MARK {, SUBTYPE_MARK};
5876 -- Note: use type clause is not permitted in Ada 83 mode
5878 -- Note: the ALL keyword can appear only in Ada 2012 mode
5880 -- N_Use_Type_Clause
5881 -- Sloc points to USE
5882 -- Prev_Use_Clause (Node1-Sem)
5883 -- Used_Operations (Elist2-Sem)
5884 -- Next_Use_Clause (Node3-Sem)
5885 -- Subtype_Mark (Node4)
5886 -- Hidden_By_Use_Clause (Elist5-Sem)
5887 -- Is_Effective_Use_Clause (Flag1)
5888 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5889 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5890 -- All_Present (Flag15)
5892 -------------------------------
5893 -- 8.5 Renaming Declaration --
5894 -------------------------------
5896 -- RENAMING_DECLARATION ::=
5897 -- OBJECT_RENAMING_DECLARATION
5898 -- | EXCEPTION_RENAMING_DECLARATION
5899 -- | PACKAGE_RENAMING_DECLARATION
5900 -- | SUBPROGRAM_RENAMING_DECLARATION
5901 -- | GENERIC_RENAMING_DECLARATION
5903 --------------------------------------
5904 -- 8.5 Object Renaming Declaration --
5905 --------------------------------------
5907 -- OBJECT_RENAMING_DECLARATION ::=
5908 -- DEFINING_IDENTIFIER :
5909 -- [NULL_EXCLUSION] SUBTYPE_MARK renames object_NAME
5910 -- [ASPECT_SPECIFICATIONS];
5911 -- | DEFINING_IDENTIFIER :
5912 -- ACCESS_DEFINITION renames object_NAME
5913 -- [ASPECT_SPECIFICATIONS];
5915 -- Note: Access_Definition is an optional field that gives support to
5916 -- Ada 2005 (AI-230). The parser generates nodes that have either the
5917 -- Subtype_Indication field or else the Access_Definition field.
5919 -- N_Object_Renaming_Declaration
5920 -- Sloc points to first identifier
5921 -- Defining_Identifier (Node1)
5922 -- Null_Exclusion_Present (Flag11) (set to False if not present)
5923 -- Subtype_Mark (Node4) (set to Empty if not present)
5924 -- Access_Definition (Node3) (set to Empty if not present)
5926 -- Corresponding_Generic_Association (Node5-Sem)
5928 -----------------------------------------
5929 -- 8.5 Exception Renaming Declaration --
5930 -----------------------------------------
5932 -- EXCEPTION_RENAMING_DECLARATION ::=
5933 -- DEFINING_IDENTIFIER : exception renames exception_NAME
5934 -- [ASPECT_SPECIFICATIONS];
5936 -- N_Exception_Renaming_Declaration
5937 -- Sloc points to first identifier
5938 -- Defining_Identifier (Node1)
5941 ---------------------------------------
5942 -- 8.5 Package Renaming Declaration --
5943 ---------------------------------------
5945 -- PACKAGE_RENAMING_DECLARATION ::=
5946 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME
5947 -- [ASPECT_SPECIFICATIONS];
5949 -- N_Package_Renaming_Declaration
5950 -- Sloc points to PACKAGE
5951 -- Defining_Unit_Name (Node1)
5953 -- Parent_Spec (Node4-Sem)
5955 ------------------------------------------
5956 -- 8.5 Subprogram Renaming Declaration --
5957 ------------------------------------------
5959 -- SUBPROGRAM_RENAMING_DECLARATION ::=
5960 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME
5961 -- [ASPECT_SPECIFICATIONS];
5963 -- N_Subprogram_Renaming_Declaration
5964 -- Sloc points to RENAMES
5965 -- Specification (Node1)
5967 -- Parent_Spec (Node4-Sem)
5968 -- Corresponding_Spec (Node5-Sem)
5969 -- Corresponding_Formal_Spec (Node3-Sem)
5970 -- From_Default (Flag6-Sem)
5972 -----------------------------------------
5973 -- 8.5.5 Generic Renaming Declaration --
5974 -----------------------------------------
5976 -- GENERIC_RENAMING_DECLARATION ::=
5977 -- generic package DEFINING_PROGRAM_UNIT_NAME
5978 -- renames generic_package_NAME
5979 -- [ASPECT_SPECIFICATIONS];
5980 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
5981 -- renames generic_procedure_NAME
5982 -- [ASPECT_SPECIFICATIONS];
5983 -- | generic function DEFINING_PROGRAM_UNIT_NAME
5984 -- renames generic_function_NAME
5985 -- [ASPECT_SPECIFICATIONS];
5987 -- N_Generic_Package_Renaming_Declaration
5988 -- Sloc points to GENERIC
5989 -- Defining_Unit_Name (Node1)
5991 -- Parent_Spec (Node4-Sem)
5993 -- N_Generic_Procedure_Renaming_Declaration
5994 -- Sloc points to GENERIC
5995 -- Defining_Unit_Name (Node1)
5997 -- Parent_Spec (Node4-Sem)
5999 -- N_Generic_Function_Renaming_Declaration
6000 -- Sloc points to GENERIC
6001 -- Defining_Unit_Name (Node1)
6003 -- Parent_Spec (Node4-Sem)
6005 --------------------------------
6006 -- 9.1 Task Type Declaration --
6007 --------------------------------
6009 -- TASK_TYPE_DECLARATION ::=
6010 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
6011 -- [ASPECT_SPECIFICATIONS]
6012 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
6014 -- N_Task_Type_Declaration
6015 -- Sloc points to TASK
6016 -- Defining_Identifier (Node1)
6017 -- Discriminant_Specifications (List4) (set to No_List if no
6018 -- discriminant part)
6019 -- Interface_List (List2) (set to No_List if none)
6020 -- Task_Definition (Node3) (set to Empty if not present)
6021 -- Corresponding_Body (Node5-Sem)
6023 ----------------------------------
6024 -- 9.1 Single Task Declaration --
6025 ----------------------------------
6027 -- SINGLE_TASK_DECLARATION ::=
6028 -- task DEFINING_IDENTIFIER
6029 -- [ASPECT_SPECIFICATIONS]
6030 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
6032 -- N_Single_Task_Declaration
6033 -- Sloc points to TASK
6034 -- Defining_Identifier (Node1)
6035 -- Interface_List (List2) (set to No_List if none)
6036 -- Task_Definition (Node3) (set to Empty if not present)
6038 --------------------------
6039 -- 9.1 Task Definition --
6040 --------------------------
6042 -- TASK_DEFINITION ::=
6046 -- end [task_IDENTIFIER]
6048 -- Note: as a result of semantic analysis, the list of task items can
6049 -- include implicit type declarations resulting from entry families.
6051 -- N_Task_Definition
6052 -- Sloc points to first token of task definition
6053 -- Visible_Declarations (List2)
6054 -- Private_Declarations (List3) (set to No_List if no private part)
6055 -- End_Label (Node4)
6056 -- Has_Storage_Size_Pragma (Flag5-Sem)
6057 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
6059 --------------------
6061 --------------------
6063 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
6065 --------------------
6067 --------------------
6070 -- task body task_DEFINING_IDENTIFIER
6071 -- [ASPECT_SPECIFICATIONS]
6075 -- HANDLED_SEQUENCE_OF_STATEMENTS
6076 -- end [task_IDENTIFIER];
6078 -- Gigi restriction: This node never appears
6081 -- Sloc points to TASK
6082 -- Defining_Identifier (Node1)
6083 -- Declarations (List2)
6084 -- Handled_Statement_Sequence (Node4)
6085 -- Is_Task_Master (Flag5-Sem)
6086 -- Activation_Chain_Entity (Node3-Sem)
6087 -- Corresponding_Spec (Node5-Sem)
6088 -- Was_Originally_Stub (Flag13-Sem)
6090 -------------------------------------
6091 -- 9.4 Protected Type Declaration --
6092 -------------------------------------
6094 -- PROTECTED_TYPE_DECLARATION ::=
6095 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
6096 -- [ASPECT_SPECIFICATIONS]
6097 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
6099 -- Note: protected type declarations are not permitted in Ada 83 mode
6101 -- N_Protected_Type_Declaration
6102 -- Sloc points to PROTECTED
6103 -- Defining_Identifier (Node1)
6104 -- Discriminant_Specifications (List4) (set to No_List if no
6105 -- discriminant part)
6106 -- Interface_List (List2) (set to No_List if none)
6107 -- Protected_Definition (Node3)
6108 -- Corresponding_Body (Node5-Sem)
6110 ---------------------------------------
6111 -- 9.4 Single Protected Declaration --
6112 ---------------------------------------
6114 -- SINGLE_PROTECTED_DECLARATION ::=
6115 -- protected DEFINING_IDENTIFIER
6116 -- [ASPECT_SPECIFICATIONS]
6117 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
6119 -- Note: single protected declarations are not allowed in Ada 83 mode
6121 -- N_Single_Protected_Declaration
6122 -- Sloc points to PROTECTED
6123 -- Defining_Identifier (Node1)
6124 -- Interface_List (List2) (set to No_List if none)
6125 -- Protected_Definition (Node3)
6127 -------------------------------
6128 -- 9.4 Protected Definition --
6129 -------------------------------
6131 -- PROTECTED_DEFINITION ::=
6132 -- {PROTECTED_OPERATION_DECLARATION}
6134 -- {PROTECTED_ELEMENT_DECLARATION}]
6135 -- end [protected_IDENTIFIER]
6137 -- N_Protected_Definition
6138 -- Sloc points to first token of protected definition
6139 -- Visible_Declarations (List2)
6140 -- Private_Declarations (List3) (set to No_List if no private part)
6141 -- End_Label (Node4)
6143 ------------------------------------------
6144 -- 9.4 Protected Operation Declaration --
6145 ------------------------------------------
6147 -- PROTECTED_OPERATION_DECLARATION ::=
6148 -- SUBPROGRAM_DECLARATION
6149 -- | ENTRY_DECLARATION
6150 -- | REPRESENTATION_CLAUSE
6152 ----------------------------------------
6153 -- 9.4 Protected Element Declaration --
6154 ----------------------------------------
6156 -- PROTECTED_ELEMENT_DECLARATION ::=
6157 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
6159 -------------------------
6160 -- 9.4 Protected Body --
6161 -------------------------
6163 -- PROTECTED_BODY ::=
6164 -- protected body DEFINING_IDENTIFIER
6165 -- [ASPECT_SPECIFICATIONS];
6167 -- {PROTECTED_OPERATION_ITEM}
6168 -- end [protected_IDENTIFIER];
6170 -- Note: protected bodies are not allowed in Ada 83 mode
6172 -- Gigi restriction: This node never appears
6175 -- Sloc points to PROTECTED
6176 -- Defining_Identifier (Node1)
6177 -- Declarations (List2) protected operation items (and pragmas)
6178 -- End_Label (Node4)
6179 -- Corresponding_Spec (Node5-Sem)
6180 -- Was_Originally_Stub (Flag13-Sem)
6182 -----------------------------------
6183 -- 9.4 Protected Operation Item --
6184 -----------------------------------
6186 -- PROTECTED_OPERATION_ITEM ::=
6187 -- SUBPROGRAM_DECLARATION
6188 -- | SUBPROGRAM_BODY
6190 -- | REPRESENTATION_CLAUSE
6192 ------------------------------
6193 -- 9.5.2 Entry Declaration --
6194 ------------------------------
6196 -- ENTRY_DECLARATION ::=
6197 -- [[not] overriding]
6198 -- entry DEFINING_IDENTIFIER
6199 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE
6200 -- [ASPECT_SPECIFICATIONS];
6202 -- N_Entry_Declaration
6203 -- Sloc points to ENTRY
6204 -- Defining_Identifier (Node1)
6205 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
6206 -- Parameter_Specifications (List3) (set to No_List if no formal part)
6207 -- Corresponding_Body (Node5-Sem)
6208 -- Must_Override (Flag14) set if overriding indicator present
6209 -- Must_Not_Override (Flag15) set if not_overriding indicator present
6211 -- Note: overriding indicator is an Ada 2005 feature
6213 -----------------------------
6214 -- 9.5.2 Accept statement --
6215 -----------------------------
6217 -- ACCEPT_STATEMENT ::=
6218 -- accept entry_DIRECT_NAME
6219 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
6220 -- HANDLED_SEQUENCE_OF_STATEMENTS
6221 -- end [entry_IDENTIFIER]];
6223 -- Gigi restriction: This node never appears
6225 -- Note: there are no explicit declarations allowed in an accept
6226 -- statement. However, the implicit declarations for any statement
6227 -- identifiers (labels and block/loop identifiers) are declarations
6228 -- that belong logically to the accept statement, and that is why
6229 -- there is a Declarations field in this node.
6231 -- N_Accept_Statement
6232 -- Sloc points to ACCEPT
6233 -- Entry_Direct_Name (Node1)
6234 -- Entry_Index (Node5) (set to Empty if not present)
6235 -- Parameter_Specifications (List3) (set to No_List if no formal part)
6236 -- Handled_Statement_Sequence (Node4)
6237 -- Declarations (List2) (set to No_List if no declarations)
6239 ------------------------
6240 -- 9.5.2 Entry Index --
6241 ------------------------
6243 -- ENTRY_INDEX ::= EXPRESSION
6245 -----------------------
6246 -- 9.5.2 Entry Body --
6247 -----------------------
6250 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
6253 -- HANDLED_SEQUENCE_OF_STATEMENTS
6254 -- end [entry_IDENTIFIER];
6256 -- ENTRY_BARRIER ::= when CONDITION
6258 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
6259 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
6260 -- too full (it would otherwise have too many fields)
6262 -- Gigi restriction: This node never appears
6265 -- Sloc points to ENTRY
6266 -- Defining_Identifier (Node1)
6267 -- Entry_Body_Formal_Part (Node5)
6268 -- Declarations (List2)
6269 -- Handled_Statement_Sequence (Node4)
6270 -- Activation_Chain_Entity (Node3-Sem)
6272 -----------------------------------
6273 -- 9.5.2 Entry Body Formal Part --
6274 -----------------------------------
6276 -- ENTRY_BODY_FORMAL_PART ::=
6277 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
6279 -- Note that an entry body formal part node is present even if it is
6280 -- empty. This reflects the grammar, in which it is the components of
6281 -- the entry body formal part that are optional, not the entry body
6282 -- formal part itself. Also this means that the barrier condition
6283 -- always has somewhere to be stored.
6285 -- Gigi restriction: This node never appears
6287 -- N_Entry_Body_Formal_Part
6288 -- Sloc points to first token
6289 -- Entry_Index_Specification (Node4) (set to Empty if not present)
6290 -- Parameter_Specifications (List3) (set to No_List if no formal part)
6291 -- Condition (Node1) from entry barrier of entry body
6293 --------------------------
6294 -- 9.5.2 Entry Barrier --
6295 --------------------------
6297 -- ENTRY_BARRIER ::= when CONDITION
6299 --------------------------------------
6300 -- 9.5.2 Entry Index Specification --
6301 --------------------------------------
6303 -- ENTRY_INDEX_SPECIFICATION ::=
6304 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
6306 -- Gigi restriction: This node never appears
6308 -- N_Entry_Index_Specification
6309 -- Sloc points to FOR
6310 -- Defining_Identifier (Node1)
6311 -- Discrete_Subtype_Definition (Node4)
6313 ---------------------------------
6314 -- 9.5.3 Entry Call Statement --
6315 ---------------------------------
6317 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
6319 -- The parser may generate a procedure call for this construct. The
6320 -- semantic pass must correct this misidentification where needed.
6322 -- Gigi restriction: This node never appears
6324 -- N_Entry_Call_Statement
6325 -- Sloc points to first token of name
6327 -- Parameter_Associations (List3) (set to No_List if no
6328 -- actual parameter part)
6329 -- First_Named_Actual (Node4-Sem)
6330 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
6331 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
6332 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
6334 ------------------------------
6335 -- 9.5.4 Requeue Statement --
6336 ------------------------------
6338 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
6340 -- Note: requeue statements are not permitted in Ada 83 mode
6342 -- Gigi restriction: This node never appears
6344 -- N_Requeue_Statement
6345 -- Sloc points to REQUEUE
6347 -- Abort_Present (Flag15)
6348 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
6349 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
6350 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
6352 --------------------------
6353 -- 9.6 Delay Statement --
6354 --------------------------
6356 -- DELAY_STATEMENT ::=
6357 -- DELAY_UNTIL_STATEMENT
6358 -- | DELAY_RELATIVE_STATEMENT
6360 --------------------------------
6361 -- 9.6 Delay Until Statement --
6362 --------------------------------
6364 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
6366 -- Note: delay until statements are not permitted in Ada 83 mode
6368 -- Gigi restriction: This node never appears
6370 -- N_Delay_Until_Statement
6371 -- Sloc points to DELAY
6372 -- Expression (Node3)
6374 -----------------------------------
6375 -- 9.6 Delay Relative Statement --
6376 -----------------------------------
6378 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
6380 -- Gigi restriction: This node never appears
6382 -- N_Delay_Relative_Statement
6383 -- Sloc points to DELAY
6384 -- Expression (Node3)
6386 ---------------------------
6387 -- 9.7 Select Statement --
6388 ---------------------------
6390 -- SELECT_STATEMENT ::=
6392 -- | TIMED_ENTRY_CALL
6393 -- | CONDITIONAL_ENTRY_CALL
6394 -- | ASYNCHRONOUS_SELECT
6396 -----------------------------
6397 -- 9.7.1 Selective Accept --
6398 -----------------------------
6400 -- SELECTIVE_ACCEPT ::=
6403 -- SELECT_ALTERNATIVE
6406 -- SELECT_ALTERNATIVE}
6408 -- SEQUENCE_OF_STATEMENTS]
6411 -- Gigi restriction: This node never appears
6413 -- Note: the guard expression, if present, appears in the node for
6414 -- the select alternative.
6416 -- N_Selective_Accept
6417 -- Sloc points to SELECT
6418 -- Select_Alternatives (List1)
6419 -- Else_Statements (List4) (set to No_List if no else part)
6425 -- GUARD ::= when CONDITION =>
6427 -- As noted above, the CONDITION that is part of a GUARD is included
6428 -- in the node for the select alternative for convenience.
6430 -------------------------------
6431 -- 9.7.1 Select Alternative --
6432 -------------------------------
6434 -- SELECT_ALTERNATIVE ::=
6435 -- ACCEPT_ALTERNATIVE
6436 -- | DELAY_ALTERNATIVE
6437 -- | TERMINATE_ALTERNATIVE
6439 -------------------------------
6440 -- 9.7.1 Accept Alternative --
6441 -------------------------------
6443 -- ACCEPT_ALTERNATIVE ::=
6444 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
6446 -- Gigi restriction: This node never appears
6448 -- N_Accept_Alternative
6449 -- Sloc points to ACCEPT
6450 -- Accept_Statement (Node2)
6451 -- Condition (Node1) from the guard (set to Empty if no guard present)
6452 -- Statements (List3) (set to Empty_List if no statements)
6453 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6454 -- Accept_Handler_Records (List5-Sem)
6456 ------------------------------
6457 -- 9.7.1 Delay Alternative --
6458 ------------------------------
6460 -- DELAY_ALTERNATIVE ::=
6461 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
6463 -- Gigi restriction: This node never appears
6465 -- N_Delay_Alternative
6466 -- Sloc points to DELAY
6467 -- Delay_Statement (Node2)
6468 -- Condition (Node1) from the guard (set to Empty if no guard present)
6469 -- Statements (List3) (set to Empty_List if no statements)
6470 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6472 ----------------------------------
6473 -- 9.7.1 Terminate Alternative --
6474 ----------------------------------
6476 -- TERMINATE_ALTERNATIVE ::= terminate;
6478 -- Gigi restriction: This node never appears
6480 -- N_Terminate_Alternative
6481 -- Sloc points to TERMINATE
6482 -- Condition (Node1) from the guard (set to Empty if no guard present)
6483 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6484 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
6486 -----------------------------
6487 -- 9.7.2 Timed Entry Call --
6488 -----------------------------
6490 -- TIMED_ENTRY_CALL ::=
6492 -- ENTRY_CALL_ALTERNATIVE
6494 -- DELAY_ALTERNATIVE
6497 -- Gigi restriction: This node never appears
6499 -- N_Timed_Entry_Call
6500 -- Sloc points to SELECT
6501 -- Entry_Call_Alternative (Node1)
6502 -- Delay_Alternative (Node4)
6504 -----------------------------------
6505 -- 9.7.2 Entry Call Alternative --
6506 -----------------------------------
6508 -- ENTRY_CALL_ALTERNATIVE ::=
6509 -- PROCEDURE_OR_ENTRY_CALL [SEQUENCE_OF_STATEMENTS]
6511 -- PROCEDURE_OR_ENTRY_CALL ::=
6512 -- PROCEDURE_CALL_STATEMENT | ENTRY_CALL_STATEMENT
6514 -- Gigi restriction: This node never appears
6516 -- N_Entry_Call_Alternative
6517 -- Sloc points to first token of entry call statement
6518 -- Entry_Call_Statement (Node1)
6519 -- Statements (List3) (set to Empty_List if no statements)
6520 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6522 -----------------------------------
6523 -- 9.7.3 Conditional Entry Call --
6524 -----------------------------------
6526 -- CONDITIONAL_ENTRY_CALL ::=
6528 -- ENTRY_CALL_ALTERNATIVE
6530 -- SEQUENCE_OF_STATEMENTS
6533 -- Gigi restriction: This node never appears
6535 -- N_Conditional_Entry_Call
6536 -- Sloc points to SELECT
6537 -- Entry_Call_Alternative (Node1)
6538 -- Else_Statements (List4)
6540 --------------------------------
6541 -- 9.7.4 Asynchronous Select --
6542 --------------------------------
6544 -- ASYNCHRONOUS_SELECT ::=
6546 -- TRIGGERING_ALTERNATIVE
6551 -- Note: asynchronous select is not permitted in Ada 83 mode
6553 -- Gigi restriction: This node never appears
6555 -- N_Asynchronous_Select
6556 -- Sloc points to SELECT
6557 -- Triggering_Alternative (Node1)
6558 -- Abortable_Part (Node2)
6560 -----------------------------------
6561 -- 9.7.4 Triggering Alternative --
6562 -----------------------------------
6564 -- TRIGGERING_ALTERNATIVE ::=
6565 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
6567 -- Gigi restriction: This node never appears
6569 -- N_Triggering_Alternative
6570 -- Sloc points to first token of triggering statement
6571 -- Triggering_Statement (Node1)
6572 -- Statements (List3) (set to Empty_List if no statements)
6573 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
6575 ---------------------------------
6576 -- 9.7.4 Triggering Statement --
6577 ---------------------------------
6579 -- TRIGGERING_STATEMENT ::= PROCEDURE_OR_ENTRY_CALL | DELAY_STATEMENT
6581 ---------------------------
6582 -- 9.7.4 Abortable Part --
6583 ---------------------------
6585 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
6587 -- Gigi restriction: This node never appears
6590 -- Sloc points to ABORT
6591 -- Statements (List3)
6593 --------------------------
6594 -- 9.8 Abort Statement --
6595 --------------------------
6597 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
6599 -- Gigi restriction: This node never appears
6601 -- N_Abort_Statement
6602 -- Sloc points to ABORT
6605 -------------------------
6606 -- 10.1.1 Compilation --
6607 -------------------------
6609 -- COMPILATION ::= {COMPILATION_UNIT}
6611 -- There is no explicit node in the tree for a compilation, since in
6612 -- general the compiler is processing only a single compilation unit
6613 -- at a time. It is possible to parse multiple units in syntax check
6614 -- only mode, but the trees are discarded in that case.
6616 ------------------------------
6617 -- 10.1.1 Compilation Unit --
6618 ------------------------------
6620 -- COMPILATION_UNIT ::=
6621 -- CONTEXT_CLAUSE LIBRARY_ITEM
6622 -- | CONTEXT_CLAUSE SUBUNIT
6624 -- The N_Compilation_Unit node itself represents the above syntax.
6625 -- However, there are two additional items not reflected in the above
6626 -- syntax. First we have the global declarations that are added by the
6627 -- code generator. These are outer level declarations (so they cannot
6628 -- be represented as being inside the units). An example is the wrapper
6629 -- subprograms that are created to do ABE checking. As always a list of
6630 -- declarations can contain actions as well (i.e. statements), and such
6631 -- statements are executed as part of the elaboration of the unit. Note
6632 -- that all such declarations are elaborated before the library unit.
6634 -- Similarly, certain actions need to be elaborated at the completion
6635 -- of elaboration of the library unit (notably the statement that sets
6636 -- the Boolean flag indicating that elaboration is complete).
6638 -- The third item not reflected in the syntax is pragmas that appear
6639 -- after the compilation unit. As always pragmas are a problem since
6640 -- they are not part of the formal syntax, but can be stuck into the
6641 -- source following a set of ad hoc rules, and we have to find an ad
6642 -- hoc way of sticking them into the tree. For pragmas that appear
6643 -- before the library unit, we just consider them to be part of the
6644 -- context clause, and pragmas can appear in the Context_Items list
6645 -- of the compilation unit. However, pragmas can also appear after
6646 -- the library item.
6648 -- To deal with all these problems, we create an auxiliary node for
6649 -- a compilation unit, referenced from the N_Compilation_Unit node,
6650 -- that contains these items.
6652 -- N_Compilation_Unit
6653 -- Sloc points to first token of defining unit name
6654 -- Context_Items (List1) context items and pragmas preceding unit
6655 -- Private_Present (Flag15) set if library unit has private keyword
6656 -- Unit (Node2) library item or subunit
6657 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
6658 -- First_Inlined_Subprogram (Node3-Sem)
6659 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
6660 -- Save_Invocation_Graph_Of_Body (Flag1-Sem)
6661 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
6662 -- Body_Required (Flag13-Sem) set for spec if body is required
6663 -- Has_Pragma_Suppress_All (Flag14-Sem)
6664 -- Context_Pending (Flag16-Sem)
6665 -- Has_No_Elaboration_Code (Flag17-Sem)
6667 -- N_Compilation_Unit_Aux
6668 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
6669 -- Declarations (List2) (set to No_List if no global declarations)
6670 -- Actions (List1) (set to No_List if no actions)
6671 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
6672 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
6673 -- Default_Storage_Pool (Node3-Sem)
6675 --------------------------
6676 -- 10.1.1 Library Item --
6677 --------------------------
6680 -- [private] LIBRARY_UNIT_DECLARATION
6681 -- | LIBRARY_UNIT_BODY
6682 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
6684 -- Note: PRIVATE is not allowed in Ada 83 mode
6686 -- There is no explicit node in the tree for library item, instead
6687 -- the declaration or body, and the flag for private if present,
6688 -- appear in the N_Compilation_Unit node.
6690 --------------------------------------
6691 -- 10.1.1 Library Unit Declaration --
6692 --------------------------------------
6694 -- LIBRARY_UNIT_DECLARATION ::=
6695 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
6696 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
6698 -----------------------------------------------
6699 -- 10.1.1 Library Unit Renaming Declaration --
6700 -----------------------------------------------
6702 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
6703 -- PACKAGE_RENAMING_DECLARATION
6704 -- | GENERIC_RENAMING_DECLARATION
6705 -- | SUBPROGRAM_RENAMING_DECLARATION
6707 -------------------------------
6708 -- 10.1.1 Library unit body --
6709 -------------------------------
6711 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
6713 ------------------------------
6714 -- 10.1.1 Parent Unit Name --
6715 ------------------------------
6717 -- PARENT_UNIT_NAME ::= NAME
6719 ----------------------------
6720 -- 10.1.2 Context clause --
6721 ----------------------------
6723 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
6725 -- The context clause can include pragmas, and any pragmas that appear
6726 -- before the context clause proper (i.e. all configuration pragmas,
6727 -- also appear at the front of this list).
6729 --------------------------
6730 -- 10.1.2 Context_Item --
6731 --------------------------
6733 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
6735 -------------------------
6736 -- 10.1.2 With clause --
6737 -------------------------
6740 -- with library_unit_NAME {,library_unit_NAME};
6742 -- A separate With clause is built for each name, so that we have
6743 -- a Corresponding_Spec field for each with'ed spec. The flags
6744 -- First_Name and Last_Name are used to reconstruct the exact
6745 -- source form. When a list of names appears in one with clause,
6746 -- the first name in the list has First_Name set, and the last
6747 -- has Last_Name set. If the with clause has only one name, then
6748 -- both of the flags First_Name and Last_Name are set in this name.
6750 -- Note: in the case of implicit with's that are installed by the
6751 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
6752 -- set to Standard_Location, but it is incorrect to test the Sloc
6753 -- to find out if a with clause is implicit, test the flag instead.
6756 -- Sloc points to first token of library unit name
6758 -- Private_Present (Flag15) set if with_clause has private keyword
6759 -- Limited_Present (Flag17) set if LIMITED is present
6760 -- Next_Implicit_With (Node3-Sem)
6761 -- Library_Unit (Node4-Sem)
6762 -- Corresponding_Spec (Node5-Sem)
6763 -- First_Name (Flag5) (set to True if first name or only one name)
6764 -- Last_Name (Flag6) (set to True if last name or only one name)
6765 -- Context_Installed (Flag13-Sem)
6766 -- Elaborate_Present (Flag4-Sem)
6767 -- Elaborate_All_Present (Flag14-Sem)
6768 -- Elaborate_All_Desirable (Flag9-Sem)
6769 -- Elaborate_Desirable (Flag11-Sem)
6770 -- Implicit_With (Flag16-Sem)
6771 -- Limited_View_Installed (Flag18-Sem)
6772 -- Parent_With (Flag1-Sem)
6773 -- Unreferenced_In_Spec (Flag7-Sem)
6774 -- No_Entities_Ref_In_Spec (Flag8-Sem)
6776 -- Note: Limited_Present and Limited_View_Installed are used to support
6777 -- the implementation of Ada 2005 (AI-50217).
6779 -- Similarly, Private_Present is used to support the implementation of
6780 -- Ada 2005 (AI-50262).
6782 -- Note: if the WITH clause refers to a standard library unit, then a
6783 -- limited with clause is changed into a normal with clause, because we
6784 -- are not prepared to deal with limited with in the context of Rtsfind.
6785 -- So in this case, the Limited_Present flag will be False in the final
6786 -- tree. However, we do NOT do this transformation in ASIS mode, so for
6787 -- ASIS the flag will remain set in this situation.
6789 ----------------------
6790 -- With_Type clause --
6791 ----------------------
6793 -- This is a GNAT extension, used to implement mutually recursive
6794 -- types declared in different packages.
6796 -- Note: this is now obsolete. The functionality of this construct
6797 -- is now implemented by the Ada 2005 limited_with_clause.
6799 ---------------------
6800 -- 10.2 Body stub --
6801 ---------------------
6804 -- SUBPROGRAM_BODY_STUB
6805 -- | PACKAGE_BODY_STUB
6807 -- | PROTECTED_BODY_STUB
6809 ----------------------------------
6810 -- 10.1.3 Subprogram Body Stub --
6811 ----------------------------------
6813 -- SUBPROGRAM_BODY_STUB ::=
6814 -- SUBPROGRAM_SPECIFICATION is separate
6815 -- [ASPECT_SPECIFICATION];
6817 -- N_Subprogram_Body_Stub
6818 -- Sloc points to FUNCTION or PROCEDURE
6819 -- Specification (Node1)
6820 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6821 -- Library_Unit (Node4-Sem) points to the subunit
6822 -- Corresponding_Body (Node5-Sem)
6824 -------------------------------
6825 -- 10.1.3 Package Body Stub --
6826 -------------------------------
6828 -- PACKAGE_BODY_STUB ::=
6829 -- package body DEFINING_IDENTIFIER is separate
6830 -- [ASPECT_SPECIFICATION];
6832 -- N_Package_Body_Stub
6833 -- Sloc points to PACKAGE
6834 -- Defining_Identifier (Node1)
6835 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6836 -- Library_Unit (Node4-Sem) points to the subunit
6837 -- Corresponding_Body (Node5-Sem)
6839 ----------------------------
6840 -- 10.1.3 Task Body Stub --
6841 ----------------------------
6843 -- TASK_BODY_STUB ::=
6844 -- task body DEFINING_IDENTIFIER is separate
6845 -- [ASPECT_SPECIFICATION];
6848 -- Sloc points to TASK
6849 -- Defining_Identifier (Node1)
6850 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6851 -- Library_Unit (Node4-Sem) points to the subunit
6852 -- Corresponding_Body (Node5-Sem)
6854 ---------------------------------
6855 -- 10.1.3 Protected Body Stub --
6856 ---------------------------------
6858 -- PROTECTED_BODY_STUB ::=
6859 -- protected body DEFINING_IDENTIFIER is separate
6860 -- [ASPECT_SPECIFICATION];
6862 -- Note: protected body stubs are not allowed in Ada 83 mode
6864 -- N_Protected_Body_Stub
6865 -- Sloc points to PROTECTED
6866 -- Defining_Identifier (Node1)
6867 -- Corresponding_Spec_Of_Stub (Node2-Sem)
6868 -- Library_Unit (Node4-Sem) points to the subunit
6869 -- Corresponding_Body (Node5-Sem)
6871 ---------------------
6872 -- 10.1.3 Subunit --
6873 ---------------------
6875 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
6878 -- Sloc points to SEPARATE
6879 -- Name (Node2) is the name of the parent unit
6880 -- Proper_Body (Node1) is the subunit body
6881 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
6883 ---------------------------------
6884 -- 11.1 Exception Declaration --
6885 ---------------------------------
6887 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception
6888 -- [ASPECT_SPECIFICATIONS];
6890 -- For consistency with object declarations etc., the parser converts
6891 -- the case of multiple identifiers being declared to a series of
6892 -- declarations in which the expression is copied, using the More_Ids
6893 -- and Prev_Ids flags to remember the source form as described in the
6894 -- section on "Handling of Defining Identifier Lists".
6896 -- N_Exception_Declaration
6897 -- Sloc points to EXCEPTION
6898 -- Defining_Identifier (Node1)
6899 -- Expression (Node3-Sem)
6900 -- Renaming_Exception (Node2-Sem)
6901 -- More_Ids (Flag5) (set to False if no more identifiers in list)
6902 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
6904 ------------------------------------------
6905 -- 11.2 Handled Sequence Of Statements --
6906 ------------------------------------------
6908 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
6909 -- SEQUENCE_OF_STATEMENTS
6911 -- EXCEPTION_HANDLER
6912 -- {EXCEPTION_HANDLER}]
6914 -- cleanup_procedure_call (param, param, param, ...);]
6916 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
6917 -- used only internally currently, but is considered to be syntactic.
6918 -- At the moment, the only cleanup action allowed is a single call to
6919 -- a parameterless procedure, and the Identifier field of the node is
6920 -- the procedure to be called. The cleanup action occurs whenever the
6921 -- sequence of statements is left for any reason. The possible reasons
6923 -- 1. reaching the end of the sequence
6924 -- 2. exit, return, or goto
6925 -- 3. exception or abort
6926 -- For some back ends, such as gcc with ZCX, "at end" is implemented
6927 -- entirely in the back end. In this case, a handled sequence of
6928 -- statements with an "at end" cannot also have exception handlers.
6929 -- For other back ends, such as gcc with front-end SJLJ, the
6930 -- implementation is split between the front end and back end; the front
6931 -- end implements 3, and the back end implements 1 and 2. In this case,
6932 -- if there is an "at end", the front end inserts the appropriate
6933 -- exception handler, and this handler takes precedence over "at end"
6934 -- in case of exception.
6936 -- The inserted exception handler is of the form:
6938 -- when all others =>
6942 -- where cleanup is the procedure to be called. The reason we do this is
6943 -- so that the front end can handle the necessary entries in the
6944 -- exception tables, and other exception handler actions required as
6945 -- part of the normal handling for exception handlers.
6947 -- The AT END cleanup handler protects only the sequence of statements
6948 -- (not the associated declarations of the parent), just like exception
6949 -- handlers. The big difference is that the cleanup procedure is called
6950 -- on either a normal or an abnormal exit from the statement sequence.
6952 -- Note: the list of Exception_Handlers can contain pragmas as well
6953 -- as actual handlers. In practice these pragmas can only occur at
6954 -- the start of the list, since any pragmas occurring later on will
6955 -- be included in the statement list of the corresponding handler.
6957 -- Note: although in the Ada syntax, the sequence of statements in
6958 -- a handled sequence of statements can only contain statements, we
6959 -- allow free mixing of declarations and statements in the resulting
6960 -- expanded tree. This is for example used to deal with the case of
6961 -- a cleanup procedure that must handle declarations as well as the
6962 -- statements of a block.
6964 -- Note: the cleanup_procedure_call does not go through the common
6965 -- processing for calls, which in particular means that it will not be
6966 -- automatically inlined in all cases, even though the procedure to be
6967 -- called is marked inline. More specifically, if the procedure comes
6968 -- from another unit than the main source unit, for example a run-time
6969 -- unit, then it needs to be manually added to the list of bodies to be
6970 -- inlined by invoking Add_Inlined_Body on it.
6972 -- N_Handled_Sequence_Of_Statements
6973 -- Sloc points to first token of first statement
6974 -- Statements (List3)
6975 -- End_Label (Node4) (set to Empty if expander generated)
6976 -- Exception_Handlers (List5) (set to No_List if none present)
6977 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
6978 -- First_Real_Statement (Node2-Sem)
6980 -- Note: the parent always contains a Declarations field which contains
6981 -- declarations associated with the handled sequence of statements. This
6982 -- is true even in the case of an accept statement (see description of
6983 -- the N_Accept_Statement node).
6985 -- End_Label refers to the containing construct
6987 -----------------------------
6988 -- 11.2 Exception Handler --
6989 -----------------------------
6991 -- EXCEPTION_HANDLER ::=
6992 -- when [CHOICE_PARAMETER_SPECIFICATION :]
6993 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
6994 -- SEQUENCE_OF_STATEMENTS
6996 -- Note: choice parameter specification is not allowed in Ada 83 mode
6998 -- N_Exception_Handler
6999 -- Sloc points to WHEN
7000 -- Choice_Parameter (Node2) (set to Empty if not present)
7001 -- Exception_Choices (List4)
7002 -- Statements (List3)
7003 -- Exception_Label (Node5-Sem) (set to Empty of not present)
7004 -- Local_Raise_Statements (Elist1-Sem) (set to No_Elist if not present)
7005 -- Local_Raise_Not_OK (Flag7-Sem)
7006 -- Has_Local_Raise (Flag8-Sem)
7008 ------------------------------------------
7009 -- 11.2 Choice parameter specification --
7010 ------------------------------------------
7012 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
7014 ----------------------------
7015 -- 11.2 Exception Choice --
7016 ----------------------------
7018 -- EXCEPTION_CHOICE ::= exception_NAME | others
7020 -- Except in the case of OTHERS, no explicit node appears in the tree
7021 -- for exception choice. Instead the exception name appears directly.
7022 -- An OTHERS choice is represented by a N_Others_Choice node (see
7025 -- Note: for the exception choice created for an at end handler, the
7026 -- exception choice is an N_Others_Choice node with All_Others set.
7028 ---------------------------
7029 -- 11.3 Raise Statement --
7030 ---------------------------
7032 -- RAISE_STATEMENT ::= raise [exception_NAME];
7034 -- In Ada 2005, we have
7036 -- RAISE_STATEMENT ::=
7037 -- raise; | raise exception_NAME [with string_EXPRESSION];
7039 -- N_Raise_Statement
7040 -- Sloc points to RAISE
7041 -- Name (Node2) (set to Empty if no exception name present)
7042 -- Expression (Node3) (set to Empty if no expression present)
7043 -- From_At_End (Flag4-Sem)
7045 ----------------------------
7046 -- 11.3 Raise Expression --
7047 ----------------------------
7049 -- RAISE_EXPRESSION ::= raise exception_NAME [with string_EXPRESSION]
7051 -- N_Raise_Expression
7052 -- Sloc points to RAISE
7053 -- Name (Node2) (always present)
7054 -- Expression (Node3) (set to Empty if no expression present)
7055 -- Convert_To_Return_False (Flag13-Sem)
7056 -- plus fields for expression
7058 -------------------------------
7059 -- 12.1 Generic Declaration --
7060 -------------------------------
7062 -- GENERIC_DECLARATION ::=
7063 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
7065 ------------------------------------------
7066 -- 12.1 Generic Subprogram Declaration --
7067 ------------------------------------------
7069 -- GENERIC_SUBPROGRAM_DECLARATION ::=
7070 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION
7071 -- [ASPECT_SPECIFICATIONS];
7073 -- Note: Generic_Formal_Declarations can include pragmas
7075 -- N_Generic_Subprogram_Declaration
7076 -- Sloc points to GENERIC
7077 -- Specification (Node1) subprogram specification
7078 -- Corresponding_Body (Node5-Sem)
7079 -- Generic_Formal_Declarations (List2) from generic formal part
7080 -- Parent_Spec (Node4-Sem)
7082 ---------------------------------------
7083 -- 12.1 Generic Package Declaration --
7084 ---------------------------------------
7086 -- GENERIC_PACKAGE_DECLARATION ::=
7087 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION
7088 -- [ASPECT_SPECIFICATIONS];
7090 -- Note: when we do generics right, the Activation_Chain_Entity entry
7091 -- for this node can be removed (since the expander won't see generic
7092 -- units any more)???.
7094 -- Note: Generic_Formal_Declarations can include pragmas
7096 -- N_Generic_Package_Declaration
7097 -- Sloc points to GENERIC
7098 -- Specification (Node1) package specification
7099 -- Corresponding_Body (Node5-Sem)
7100 -- Generic_Formal_Declarations (List2) from generic formal part
7101 -- Parent_Spec (Node4-Sem)
7102 -- Activation_Chain_Entity (Node3-Sem)
7104 -------------------------------
7105 -- 12.1 Generic Formal Part --
7106 -------------------------------
7108 -- GENERIC_FORMAL_PART ::=
7109 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
7111 ------------------------------------------------
7112 -- 12.1 Generic Formal Parameter Declaration --
7113 ------------------------------------------------
7115 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
7116 -- FORMAL_OBJECT_DECLARATION
7117 -- | FORMAL_TYPE_DECLARATION
7118 -- | FORMAL_SUBPROGRAM_DECLARATION
7119 -- | FORMAL_PACKAGE_DECLARATION
7121 ---------------------------------
7122 -- 12.3 Generic Instantiation --
7123 ---------------------------------
7125 -- GENERIC_INSTANTIATION ::=
7126 -- package DEFINING_PROGRAM_UNIT_NAME is
7127 -- new generic_package_NAME [GENERIC_ACTUAL_PART]
7128 -- [ASPECT_SPECIFICATIONS];
7129 -- | [[not] overriding]
7130 -- procedure DEFINING_PROGRAM_UNIT_NAME is
7131 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART]
7132 -- [ASPECT_SPECIFICATIONS];
7133 -- | [[not] overriding]
7134 -- function DEFINING_DESIGNATOR is
7135 -- new generic_function_NAME [GENERIC_ACTUAL_PART]
7136 -- [ASPECT_SPECIFICATIONS];
7138 -- N_Package_Instantiation
7139 -- Sloc points to PACKAGE
7140 -- Defining_Unit_Name (Node1)
7142 -- Generic_Associations (List3) (set to No_List if no
7143 -- generic actual part)
7144 -- Parent_Spec (Node4-Sem)
7145 -- Instance_Spec (Node5-Sem)
7146 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
7147 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
7148 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
7149 -- Is_Declaration_Level_Node (Flag5-Sem)
7150 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
7152 -- N_Procedure_Instantiation
7153 -- Sloc points to PROCEDURE
7154 -- Defining_Unit_Name (Node1)
7156 -- Parent_Spec (Node4-Sem)
7157 -- Generic_Associations (List3) (set to No_List if no
7158 -- generic actual part)
7159 -- Instance_Spec (Node5-Sem)
7160 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
7161 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
7162 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
7163 -- Is_Declaration_Level_Node (Flag5-Sem)
7164 -- Must_Override (Flag14) set if overriding indicator present
7165 -- Must_Not_Override (Flag15) set if not_overriding indicator present
7166 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
7168 -- N_Function_Instantiation
7169 -- Sloc points to FUNCTION
7170 -- Defining_Unit_Name (Node1)
7172 -- Generic_Associations (List3) (set to No_List if no
7173 -- generic actual part)
7174 -- Parent_Spec (Node4-Sem)
7175 -- Instance_Spec (Node5-Sem)
7176 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
7177 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
7178 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
7179 -- Is_Declaration_Level_Node (Flag5-Sem)
7180 -- Must_Override (Flag14) set if overriding indicator present
7181 -- Must_Not_Override (Flag15) set if not_overriding indicator present
7182 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
7184 -- Note: overriding indicator is an Ada 2005 feature
7186 -------------------------------
7187 -- 12.3 Generic Actual Part --
7188 -------------------------------
7190 -- GENERIC_ACTUAL_PART ::=
7191 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
7193 -------------------------------
7194 -- 12.3 Generic Association --
7195 -------------------------------
7197 -- GENERIC_ASSOCIATION ::=
7198 -- [generic_formal_parameter_SELECTOR_NAME =>]
7200 -- Note: unlike the procedure call case, a generic association node
7201 -- is generated for every association, even if no formal parameter
7202 -- selector name is present. In this case the parser will leave the
7203 -- Selector_Name field set to Empty, to be filled in later by the
7206 -- In Ada 2005, a formal may be associated with a box, if the
7207 -- association is part of the list of actuals for a formal package.
7208 -- If the association is given by OTHERS => <>, the association is
7209 -- an N_Others_Choice.
7211 -- N_Generic_Association
7212 -- Sloc points to first token of generic association
7213 -- Selector_Name (Node2) (set to Empty if no formal
7214 -- parameter selector name)
7215 -- Explicit_Generic_Actual_Parameter (Node1) (Empty if box present)
7216 -- Box_Present (Flag15) (for formal_package associations with a box)
7218 ---------------------------------------------
7219 -- 12.3 Explicit Generic Actual Parameter --
7220 ---------------------------------------------
7222 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
7223 -- EXPRESSION | variable_NAME | subprogram_NAME
7224 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
7226 -------------------------------------
7227 -- 12.4 Formal Object Declaration --
7228 -------------------------------------
7230 -- FORMAL_OBJECT_DECLARATION ::=
7231 -- DEFINING_IDENTIFIER_LIST :
7232 -- MODE [NULL_EXCLUSION] SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
7233 -- [ASPECT_SPECIFICATIONS];
7234 -- | DEFINING_IDENTIFIER_LIST :
7235 -- MODE ACCESS_DEFINITION [:= DEFAULT_EXPRESSION]
7236 -- [ASPECT_SPECIFICATIONS];
7238 -- Although the syntax allows multiple identifiers in the list, the
7239 -- semantics is as though successive declarations were given with
7240 -- identical type definition and expression components. To simplify
7241 -- semantic processing, the parser represents a multiple declaration
7242 -- case as a sequence of single declarations, using the More_Ids and
7243 -- Prev_Ids flags to preserve the original source form as described
7244 -- in the section on "Handling of Defining Identifier Lists".
7246 -- N_Formal_Object_Declaration
7247 -- Sloc points to first identifier
7248 -- Defining_Identifier (Node1)
7249 -- In_Present (Flag15)
7250 -- Out_Present (Flag17)
7251 -- Null_Exclusion_Present (Flag11) (set to False if not present)
7252 -- Subtype_Mark (Node4) (set to Empty if not present)
7253 -- Access_Definition (Node3) (set to Empty if not present)
7254 -- Default_Expression (Node5) (set to Empty if no default expression)
7255 -- More_Ids (Flag5) (set to False if no more identifiers in list)
7256 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
7258 -----------------------------------
7259 -- 12.5 Formal Type Declaration --
7260 -----------------------------------
7262 -- FORMAL_TYPE_DECLARATION ::=
7263 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
7264 -- is FORMAL_TYPE_DEFINITION
7265 -- [ASPECT_SPECIFICATIONS];
7266 -- | type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [is tagged]
7268 -- N_Formal_Type_Declaration
7269 -- Sloc points to TYPE
7270 -- Defining_Identifier (Node1)
7271 -- Formal_Type_Definition (Node3)
7272 -- Discriminant_Specifications (List4) (set to No_List if no
7273 -- discriminant part)
7274 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
7276 ----------------------------------
7277 -- 12.5 Formal type definition --
7278 ----------------------------------
7280 -- FORMAL_TYPE_DEFINITION ::=
7281 -- FORMAL_PRIVATE_TYPE_DEFINITION
7282 -- | FORMAL_DERIVED_TYPE_DEFINITION
7283 -- | FORMAL_DISCRETE_TYPE_DEFINITION
7284 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
7285 -- | FORMAL_MODULAR_TYPE_DEFINITION
7286 -- | FORMAL_FLOATING_POINT_DEFINITION
7287 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
7288 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
7289 -- | FORMAL_ARRAY_TYPE_DEFINITION
7290 -- | FORMAL_ACCESS_TYPE_DEFINITION
7291 -- | FORMAL_INTERFACE_TYPE_DEFINITION
7292 -- | FORMAL_INCOMPLETE_TYPE_DEFINITION
7294 -- The Ada 2012 syntax introduces two new non-terminals:
7295 -- Formal_{Complete,Incomplete}_Type_Declaration just to introduce
7296 -- the latter category. Here we introduce an incomplete type definition
7297 -- in order to preserve as much as possible the existing structure.
7299 ---------------------------------------------
7300 -- 12.5.1 Formal Private Type Definition --
7301 ---------------------------------------------
7303 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
7304 -- [[abstract] tagged] [limited] private
7306 -- Note: TAGGED is not allowed in Ada 83 mode
7308 -- N_Formal_Private_Type_Definition
7309 -- Sloc points to PRIVATE
7310 -- Uninitialized_Variable (Node3-Sem)
7311 -- Abstract_Present (Flag4)
7312 -- Tagged_Present (Flag15)
7313 -- Limited_Present (Flag17)
7315 --------------------------------------------
7316 -- 12.5.1 Formal Derived Type Definition --
7317 --------------------------------------------
7319 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
7320 -- [abstract] [limited | synchronized]
7321 -- new SUBTYPE_MARK [[and INTERFACE_LIST] with private]
7322 -- Note: this construct is not allowed in Ada 83 mode
7324 -- N_Formal_Derived_Type_Definition
7325 -- Sloc points to NEW
7326 -- Subtype_Mark (Node4)
7327 -- Private_Present (Flag15)
7328 -- Abstract_Present (Flag4)
7329 -- Limited_Present (Flag17)
7330 -- Synchronized_Present (Flag7)
7331 -- Interface_List (List2) (set to No_List if none)
7333 -----------------------------------------------
7334 -- 12.5.1 Formal Incomplete Type Definition --
7335 -----------------------------------------------
7337 -- FORMAL_INCOMPLETE_TYPE_DEFINITION ::= [tagged]
7339 -- N_Formal_Incomplete_Type_Definition
7340 -- Sloc points to identifier of parent
7341 -- Tagged_Present (Flag15)
7343 ---------------------------------------------
7344 -- 12.5.2 Formal Discrete Type Definition --
7345 ---------------------------------------------
7347 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
7349 -- N_Formal_Discrete_Type_Definition
7352 ---------------------------------------------------
7353 -- 12.5.2 Formal Signed Integer Type Definition --
7354 ---------------------------------------------------
7356 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
7358 -- N_Formal_Signed_Integer_Type_Definition
7359 -- Sloc points to RANGE
7361 --------------------------------------------
7362 -- 12.5.2 Formal Modular Type Definition --
7363 --------------------------------------------
7365 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
7367 -- N_Formal_Modular_Type_Definition
7368 -- Sloc points to MOD
7370 ----------------------------------------------
7371 -- 12.5.2 Formal Floating Point Definition --
7372 ----------------------------------------------
7374 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
7376 -- N_Formal_Floating_Point_Definition
7377 -- Sloc points to DIGITS
7379 ----------------------------------------------------
7380 -- 12.5.2 Formal Ordinary Fixed Point Definition --
7381 ----------------------------------------------------
7383 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
7385 -- N_Formal_Ordinary_Fixed_Point_Definition
7386 -- Sloc points to DELTA
7388 ---------------------------------------------------
7389 -- 12.5.2 Formal Decimal Fixed Point Definition --
7390 ---------------------------------------------------
7392 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
7394 -- Note: formal decimal fixed point definition not allowed in Ada 83
7396 -- N_Formal_Decimal_Fixed_Point_Definition
7397 -- Sloc points to DELTA
7399 ------------------------------------------
7400 -- 12.5.3 Formal Array Type Definition --
7401 ------------------------------------------
7403 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
7405 -------------------------------------------
7406 -- 12.5.4 Formal Access Type Definition --
7407 -------------------------------------------
7409 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
7411 ----------------------------------------------
7412 -- 12.5.5 Formal Interface Type Definition --
7413 ----------------------------------------------
7415 -- FORMAL_INTERFACE_TYPE_DEFINITION ::= INTERFACE_TYPE_DEFINITION
7417 -----------------------------------------
7418 -- 12.6 Formal Subprogram Declaration --
7419 -----------------------------------------
7421 -- FORMAL_SUBPROGRAM_DECLARATION ::=
7422 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION
7423 -- | FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION
7425 --------------------------------------------------
7426 -- 12.6 Formal Concrete Subprogram Declaration --
7427 --------------------------------------------------
7429 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION ::=
7430 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT]
7431 -- [ASPECT_SPECIFICATIONS];
7433 -- N_Formal_Concrete_Subprogram_Declaration
7434 -- Sloc points to WITH
7435 -- Specification (Node1)
7436 -- Default_Name (Node2) (set to Empty if no subprogram default)
7437 -- Box_Present (Flag15)
7439 -- Note: if no subprogram default is present, then Name is set
7440 -- to Empty, and Box_Present is False.
7442 --------------------------------------------------
7443 -- 12.6 Formal Abstract Subprogram Declaration --
7444 --------------------------------------------------
7446 -- FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION ::=
7447 -- with SUBPROGRAM_SPECIFICATION is abstract [SUBPROGRAM_DEFAULT]
7448 -- [ASPECT_SPECIFICATIONS];
7450 -- N_Formal_Abstract_Subprogram_Declaration
7451 -- Sloc points to WITH
7452 -- Specification (Node1)
7453 -- Default_Name (Node2) (set to Empty if no subprogram default)
7454 -- Box_Present (Flag15)
7456 -- Note: if no subprogram default is present, then Name is set
7457 -- to Empty, and Box_Present is False.
7459 ------------------------------
7460 -- 12.6 Subprogram Default --
7461 ------------------------------
7463 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
7465 -- There is no separate node in the tree for a subprogram default.
7466 -- Instead the parent (N_Formal_Concrete_Subprogram_Declaration
7467 -- or N_Formal_Abstract_Subprogram_Declaration) node contains the
7468 -- default name or box indication, as needed.
7470 ------------------------
7471 -- 12.6 Default Name --
7472 ------------------------
7474 -- DEFAULT_NAME ::= NAME
7476 --------------------------------------
7477 -- 12.7 Formal Package Declaration --
7478 --------------------------------------
7480 -- FORMAL_PACKAGE_DECLARATION ::=
7481 -- with package DEFINING_IDENTIFIER
7482 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART
7483 -- [ASPECT_SPECIFICATIONS];
7485 -- Note: formal package declarations not allowed in Ada 83 mode
7487 -- N_Formal_Package_Declaration
7488 -- Sloc points to WITH
7489 -- Defining_Identifier (Node1)
7491 -- Generic_Associations (List3) (set to No_List if (<>) case or
7492 -- empty generic actual part)
7493 -- Box_Present (Flag15)
7494 -- Instance_Spec (Node5-Sem)
7495 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
7497 --------------------------------------
7498 -- 12.7 Formal Package Actual Part --
7499 --------------------------------------
7501 -- FORMAL_PACKAGE_ACTUAL_PART ::=
7503 -- | [GENERIC_ACTUAL_PART]
7504 -- (FORMAL_PACKAGE_ASSOCIATION {. FORMAL_PACKAGE_ASSOCIATION}
7506 -- FORMAL_PACKAGE_ASSOCIATION ::=
7507 -- GENERIC_ASSOCIATION
7508 -- | GENERIC_FORMAL_PARAMETER_SELECTOR_NAME => <>
7510 -- There is no explicit node in the tree for a formal package actual
7511 -- part. Instead the information appears in the parent node (i.e. the
7512 -- formal package declaration node itself).
7514 -- There is no explicit node for a formal package association. All of
7515 -- them are represented either by a generic association, possibly with
7516 -- Box_Present, or by an N_Others_Choice.
7518 ---------------------------------
7519 -- 13.1 Representation clause --
7520 ---------------------------------
7522 -- REPRESENTATION_CLAUSE ::=
7523 -- ATTRIBUTE_DEFINITION_CLAUSE
7524 -- | ENUMERATION_REPRESENTATION_CLAUSE
7525 -- | RECORD_REPRESENTATION_CLAUSE
7528 ----------------------
7529 -- 13.1 Local Name --
7530 ----------------------
7534 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
7535 -- | library_unit_NAME
7537 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
7538 -- as an attribute reference, which has essentially the same form.
7540 ---------------------------------------
7541 -- 13.3 Attribute definition clause --
7542 ---------------------------------------
7544 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
7545 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
7546 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
7548 -- In Ada 83, the expression must be a simple expression and the
7549 -- local name must be a direct name.
7551 -- Note: the only attribute definition clause that is processed by
7552 -- gigi is an address clause. For all other cases, the information
7553 -- is extracted by the front end and either results in setting entity
7554 -- information, e.g. Esize for the Size clause, or in appropriate
7555 -- expansion actions (e.g. in the case of Storage_Size).
7557 -- For an address clause, Gigi constructs the appropriate addressing
7558 -- code. It also ensures that no aliasing optimizations are made
7559 -- for the object for which the address clause appears.
7561 -- Note: for an address clause used to achieve an overlay:
7565 -- for B'Address use A'Address;
7567 -- the above rule means that Gigi will ensure that no optimizations
7568 -- will be made for B that would violate the implementation advice
7569 -- of RM 13.3(19). However, this advice applies only to B and not
7570 -- to A, which seems unfortunate. The GNAT front end will mark the
7571 -- object A as volatile to also prevent unwanted optimization
7572 -- assumptions based on no aliasing being made for B.
7574 -- N_Attribute_Definition_Clause
7575 -- Sloc points to FOR
7576 -- Name (Node2) the local name
7577 -- Chars (Name1) the identifier name from the attribute designator
7578 -- Expression (Node3) the expression or name
7579 -- Entity (Node4-Sem)
7580 -- Next_Rep_Item (Node5-Sem)
7581 -- From_At_Mod (Flag4-Sem)
7582 -- Check_Address_Alignment (Flag11-Sem)
7583 -- From_Aspect_Specification (Flag13-Sem)
7584 -- Is_Delayed_Aspect (Flag14-Sem)
7585 -- Address_Warning_Posted (Flag18-Sem)
7587 -- Note: if From_Aspect_Specification is set, then Sloc points to the
7588 -- aspect name, and Entity is resolved already to reference the entity
7589 -- to which the aspect applies.
7591 -----------------------------------
7592 -- 13.3.1 Aspect Specifications --
7593 -----------------------------------
7595 -- We modify the RM grammar here, the RM grammar is:
7597 -- ASPECT_SPECIFICATION ::=
7598 -- with ASPECT_MARK [=> ASPECT_DEFINITION] {,
7599 -- ASPECT_MARK [=> ASPECT_DEFINITION] }
7601 -- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
7603 -- ASPECT_DEFINITION ::= NAME | EXPRESSION
7605 -- That's inconvenient, since there is no non-terminal name for a single
7606 -- entry in the list of aspects. So we use this grammar instead:
7608 -- ASPECT_SPECIFICATIONS ::=
7609 -- with ASPECT_SPECIFICATION {, ASPECT_SPECIFICATION}
7611 -- ASPECT_SPECIFICATION =>
7612 -- ASPECT_MARK [=> ASPECT_DEFINITION]
7614 -- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
7616 -- ASPECT_DEFINITION ::= NAME | EXPRESSION
7618 -- Note that for Annotate, the ASPECT_DEFINITION is a pure positional
7619 -- aggregate with the elements of the aggregate corresponding to the
7620 -- successive arguments of the corresponding pragma.
7622 -- See separate package Aspects for details on the incorporation of
7623 -- these nodes into the tree, and how aspect specifications for a given
7624 -- declaration node are associated with that node.
7626 -- N_Aspect_Specification
7627 -- Sloc points to aspect identifier
7628 -- Identifier (Node1) aspect identifier
7629 -- Aspect_Rep_Item (Node2-Sem)
7630 -- Expression (Node3) Aspect_Definition (set to Empty if none)
7631 -- Entity (Node4-Sem) entity to which the aspect applies
7632 -- Next_Rep_Item (Node5-Sem)
7633 -- Class_Present (Flag6) Set if 'Class present
7634 -- Is_Ignored (Flag9-Sem)
7635 -- Is_Checked (Flag11-Sem)
7636 -- Is_Delayed_Aspect (Flag14-Sem)
7637 -- Is_Disabled (Flag15-Sem)
7638 -- Is_Boolean_Aspect (Flag16-Sem)
7639 -- Split_PPC (Flag17) Set if split pre/post attribute
7641 -- Note: Aspect_Specification is an Ada 2012 feature
7643 -- Note: The Identifier serves to identify the aspect involved (it
7644 -- is the aspect whose name corresponds to the Chars field). This
7645 -- means that the other fields of this identifier are unused, and
7646 -- in particular we use the Entity field of this identifier to save
7647 -- a copy of the expression for visibility analysis, see spec of
7648 -- Sem_Ch13 for full details of this usage.
7650 -- In the case of aspects of the form xxx'Class, the aspect identifier
7651 -- is for xxx, and Class_Present is set to True.
7653 -- Note: When a Pre or Post aspect specification is processed, it is
7654 -- broken into AND THEN sections. The left most section has Split_PPC
7655 -- set to False, indicating that it is the original specification (e.g.
7656 -- for posting errors). For the other sections, Split_PPC is set True.
7658 ---------------------------------------------
7659 -- 13.4 Enumeration representation clause --
7660 ---------------------------------------------
7662 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
7663 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
7665 -- In Ada 83, the name must be a direct name
7667 -- N_Enumeration_Representation_Clause
7668 -- Sloc points to FOR
7669 -- Identifier (Node1) direct name
7670 -- Array_Aggregate (Node3)
7671 -- Next_Rep_Item (Node5-Sem)
7673 ---------------------------------
7674 -- 13.4 Enumeration aggregate --
7675 ---------------------------------
7677 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
7679 ------------------------------------------
7680 -- 13.5.1 Record representation clause --
7681 ------------------------------------------
7683 -- RECORD_REPRESENTATION_CLAUSE ::=
7684 -- for first_subtype_LOCAL_NAME use
7685 -- record [MOD_CLAUSE]
7686 -- {COMPONENT_CLAUSE}
7689 -- Gigi restriction: Mod_Clause is always Empty (if present it is
7690 -- replaced by a corresponding Alignment attribute definition clause).
7692 -- Note: Component_Clauses can include pragmas
7694 -- N_Record_Representation_Clause
7695 -- Sloc points to FOR
7696 -- Identifier (Node1) direct name
7697 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
7698 -- Component_Clauses (List3)
7699 -- Next_Rep_Item (Node5-Sem)
7701 ------------------------------
7702 -- 13.5.1 Component clause --
7703 ------------------------------
7705 -- COMPONENT_CLAUSE ::=
7706 -- component_LOCAL_NAME at POSITION
7707 -- range FIRST_BIT .. LAST_BIT;
7709 -- N_Component_Clause
7710 -- Sloc points to AT
7711 -- Component_Name (Node1) points to Name or Attribute_Reference
7713 -- First_Bit (Node3)
7716 ----------------------
7717 -- 13.5.1 Position --
7718 ----------------------
7720 -- POSITION ::= static_EXPRESSION
7722 -----------------------
7723 -- 13.5.1 First_Bit --
7724 -----------------------
7726 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
7728 ----------------------
7729 -- 13.5.1 Last_Bit --
7730 ----------------------
7732 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
7734 --------------------------
7735 -- 13.8 Code statement --
7736 --------------------------
7738 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
7740 -- Note: in GNAT, the qualified expression has the form
7742 -- Asm_Insn'(Asm (...));
7744 -- See package System.Machine_Code in file s-maccod.ads for details on
7745 -- the allowed parameters to Asm. There are two ways this node can
7746 -- arise, as a code statement, in which case the expression is the
7747 -- qualified expression, or as a result of the expansion of an intrinsic
7748 -- call to the Asm or Asm_Input procedure.
7751 -- Sloc points to first token of the expression
7752 -- Expression (Node3)
7754 -- Note: package Exp_Code contains an abstract functional interface
7755 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
7757 ------------------------
7758 -- 13.12 Restriction --
7759 ------------------------
7762 -- restriction_IDENTIFIER
7763 -- | restriction_parameter_IDENTIFIER => EXPRESSION
7765 -- There is no explicit node for restrictions. Instead the restriction
7766 -- appears in normal pragma syntax as a pragma argument association,
7767 -- which has the same syntactic form.
7769 --------------------------
7770 -- B.2 Shift Operators --
7771 --------------------------
7773 -- Calls to the intrinsic shift functions are converted to one of
7774 -- the following shift nodes, which have the form of normal binary
7775 -- operator names. Note that for a given shift operation, one node
7776 -- covers all possible types, as for normal operators.
7778 -- Note: it is perfectly permissible for the expander to generate
7779 -- shift operation nodes directly, in which case they will be analyzed
7780 -- and parsed in the usual manner.
7782 -- Sprint syntax: shift-function-name!(expr, count)
7784 -- Note: the Left_Opnd field holds the first argument (the value to
7785 -- be shifted). The Right_Opnd field holds the second argument (the
7786 -- shift count). The Chars field is the name of the intrinsic function.
7789 -- Sloc points to the function name
7790 -- plus fields for binary operator
7791 -- plus fields for expression
7792 -- Shift_Count_OK (Flag4-Sem)
7794 -- N_Op_Rotate_Right
7795 -- Sloc points to the function name
7796 -- plus fields for binary operator
7797 -- plus fields for expression
7798 -- Shift_Count_OK (Flag4-Sem)
7801 -- Sloc points to the function name
7802 -- plus fields for binary operator
7803 -- plus fields for expression
7804 -- Shift_Count_OK (Flag4-Sem)
7806 -- N_Op_Shift_Right_Arithmetic
7807 -- Sloc points to the function name
7808 -- plus fields for binary operator
7809 -- plus fields for expression
7810 -- Shift_Count_OK (Flag4-Sem)
7813 -- Sloc points to the function name
7814 -- plus fields for binary operator
7815 -- plus fields for expression
7816 -- Shift_Count_OK (Flag4-Sem)
7818 -- Note: N_Op_Rotate_Left, N_Op_Rotate_Right, N_Shift_Right_Arithmetic
7819 -- never appear in the expanded tree if Modify_Tree_For_C mode is set.
7821 -- Note: For N_Op_Shift_Left and N_Op_Shift_Right, the right operand is
7822 -- always less than the word size if Modify_Tree_For_C mode is set.
7824 --------------------------
7825 -- Obsolescent Features --
7826 --------------------------
7828 -- The syntax descriptions and tree nodes for obsolescent features are
7829 -- grouped together, corresponding to their location in appendix I in
7830 -- the RM. However, parsing and semantic analysis for these constructs
7831 -- is located in an appropriate chapter (see individual notes).
7833 ---------------------------
7834 -- J.3 Delta Constraint --
7835 ---------------------------
7837 -- Note: the parse routine for this construct is located in section
7838 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
7839 -- where delta constraint logically belongs.
7841 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
7843 -- N_Delta_Constraint
7844 -- Sloc points to DELTA
7845 -- Delta_Expression (Node3)
7846 -- Range_Constraint (Node4) (set to Empty if not present)
7848 --------------------
7850 --------------------
7852 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
7854 -- Note: the parse routine for this construct is located in Par-Ch13,
7855 -- and the semantic analysis is in Sem_Ch13, where at clause logically
7856 -- belongs if it were not obsolescent.
7858 -- Note: in Ada 83 the expression must be a simple expression
7860 -- Gigi restriction: This node never appears, it is rewritten as an
7861 -- address attribute definition clause.
7864 -- Sloc points to FOR
7865 -- Identifier (Node1)
7866 -- Expression (Node3)
7868 ---------------------
7869 -- J.8 Mod clause --
7870 ---------------------
7872 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
7874 -- Note: the parse routine for this construct is located in Par-Ch13,
7875 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
7876 -- belongs if it were not obsolescent.
7878 -- Note: in Ada 83, the expression must be a simple expression
7880 -- Gigi restriction: this node never appears. It is replaced
7881 -- by a corresponding Alignment attribute definition clause.
7883 -- Note: pragmas can appear before and after the MOD_CLAUSE since
7884 -- its name has "clause" in it. This is rather strange, but is quite
7885 -- definitely specified. The pragmas before are collected in the
7886 -- Pragmas_Before field of the mod clause node itself, and pragmas
7887 -- after are simply swallowed up in the list of component clauses.
7890 -- Sloc points to AT
7891 -- Expression (Node3)
7892 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
7894 --------------------
7895 -- Semantic Nodes --
7896 --------------------
7898 -- These semantic nodes are used to hold additional semantic information.
7899 -- They are inserted into the tree as a result of semantic processing.
7900 -- Although there are no legitimate source syntax constructions that
7901 -- correspond directly to these nodes, we need a source syntax for the
7902 -- reconstructed tree printed by Sprint, and the node descriptions here
7903 -- show this syntax.
7909 -- This node is created during the analysis/resolution of entry calls,
7910 -- requeues, and subprogram calls. It performs several functions:
7912 -- * Call markers provide a uniform model for handling calls by the
7913 -- ABE mechanism, regardless of whether expansion took place.
7915 -- * The call marker captures the target of the related call along
7916 -- with other attributes which are either unavailabe or expensive
7917 -- to recompute once analysis, resolution, and expansion are over.
7919 -- * The call marker aids the ABE Processing phase by signaling the
7920 -- presence of a call in case the original call was transformed by
7923 -- * The call marker acts as a reference point for the insertion of
7924 -- run-time conditional ABE checks or guaranteed ABE failures.
7926 -- Sprint syntax: #target#
7928 -- The Sprint syntax shown above is not enabled by default
7931 -- Sloc points to Sloc of original call
7932 -- Target (Node1-Sem)
7933 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
7934 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
7935 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
7936 -- Is_Source_Call (Flag4-Sem)
7937 -- Is_Declaration_Level_Node (Flag5-Sem)
7938 -- Is_Dispatching_Call (Flag6-Sem)
7939 -- Is_Known_Guaranteed_ABE (Flag18-Sem)
7941 ------------------------
7942 -- Compound Statement --
7943 ------------------------
7945 -- This node is created by the analyzer/expander to handle some
7946 -- expansion cases where a sequence of actions needs to be captured
7947 -- within a single node (which acts as a container and allows the
7948 -- entire list of actions to be moved around as a whole) appearing
7949 -- in a sequence of statements.
7951 -- This is the statement counterpart to the expression node
7952 -- N_Expression_With_Actions.
7954 -- The required semantics is that the set of actions is executed in
7955 -- the order in which it appears, as though they appeared by themselves
7956 -- in the enclosing list of declarations or statements. Unlike what
7957 -- happens when using an N_Block_Statement, no new scope is introduced.
7959 -- Note: for the time being, this is used only as a transient
7960 -- representation during expansion, and all compound statement nodes
7961 -- must be exploded back to their constituent statements before handing
7962 -- the tree to the back end.
7964 -- Sprint syntax: do
7971 -- N_Compound_Statement
7978 -- This node is used to hold the various parts of an entry, subprogram
7979 -- [body] or package [body] contract, in particular:
7980 -- Abstract states declared by a package declaration
7981 -- Contract cases that apply to a subprogram
7982 -- Dependency relations of inputs and output of a subprogram
7983 -- Global annotations classifying data as input or output
7984 -- Initialization sequences for a package declaration
7985 -- Pre- and postconditions that apply to a subprogram
7987 -- The node appears in an entry and [generic] subprogram [body] entity.
7989 -- Sprint syntax: <none> as the node should not appear in the tree, but
7990 -- only attached to an entry or [generic] subprogram
7994 -- Sloc points to the subprogram's name
7995 -- Pre_Post_Conditions (Node1-Sem) (set to Empty if none)
7996 -- Contract_Test_Cases (Node2-Sem) (set to Empty if none)
7997 -- Classifications (Node3-Sem) (set to Empty if none)
7998 -- Is_Expanded_Contract (Flag1-Sem)
8000 -- Pre_Post_Conditions contains a collection of pragmas that correspond
8001 -- to pre- and postconditions associated with an entry or a subprogram
8002 -- [body or stub]. The pragmas can either come from source or be the
8003 -- byproduct of aspect expansion. Currently the following pragmas appear
8010 -- The ordering in the list is in LIFO fashion.
8012 -- Note that there might be multiple preconditions or postconditions
8013 -- in this list, either because they come from separate pragmas in the
8014 -- source, or because a Pre (resp. Post) aspect specification has been
8015 -- broken into AND THEN sections. See Split_PPC for details.
8017 -- In GNATprove mode, the inherited classwide pre- and postconditions
8018 -- (suitably specialized for the specific type of the overriding
8019 -- operation) are also in this list.
8021 -- Contract_Test_Cases contains a collection of pragmas that correspond
8022 -- to aspects/pragmas Contract_Cases and Test_Case. The ordering in the
8023 -- list is in LIFO fashion.
8025 -- Classifications contains pragmas that either declare, categorize, or
8026 -- establish dependencies between subprogram or package inputs and
8027 -- outputs. Currently the following pragmas appear in this list:
8031 -- Constant_After_Elaboration
8035 -- Extensions_Visible
8037 -- Initial_Condition
8043 -- Volatile_Function
8044 -- The ordering is in LIFO fashion.
8050 -- The N_Expanded_Name node is used to represent a selected component
8051 -- name that has been resolved to an expanded name. The semantic phase
8052 -- replaces N_Selected_Component nodes that represent names by the use
8053 -- of this node, leaving the N_Selected_Component node used only when
8054 -- the prefix is a record or protected type.
8056 -- The fields of the N_Expanded_Name node are laid out identically
8057 -- to those of the N_Selected_Component node, allowing conversion of
8058 -- an expanded name node to a selected component node to be done
8059 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
8061 -- There is no special sprint syntax for an expanded name
8064 -- Sloc points to the period
8065 -- Chars (Name1) copy of Chars field of selector name
8067 -- Selector_Name (Node2)
8068 -- Entity (Node4-Sem)
8069 -- Associated_Node (Node4-Sem)
8070 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
8071 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
8072 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
8073 -- Has_Private_View (Flag11-Sem) set in generic units
8074 -- Redundant_Use (Flag13-Sem)
8075 -- Atomic_Sync_Required (Flag14-Sem)
8076 -- plus fields for expression
8078 -----------------------------
8079 -- Expression With Actions --
8080 -----------------------------
8082 -- This node is created by the analyzer/expander to handle some
8083 -- expansion cases, notably short-circuit forms where there are
8084 -- actions associated with the right-hand side operand.
8086 -- The N_Expression_With_Actions node represents an expression with
8087 -- an associated set of actions (which are executable statements and
8088 -- declarations, as might occur in a handled statement sequence).
8090 -- The required semantics is that the set of actions is executed in
8091 -- the order in which it appears just before the expression is
8092 -- evaluated (and these actions must only be executed if the value
8093 -- of the expression is evaluated). The node is considered to be
8094 -- a subexpression, whose value is the value of the Expression after
8095 -- executing all the actions.
8097 -- If the actions contain declarations, then these declarations may
8098 -- be referenced within the expression. However note that there is
8099 -- no proper scope associated with the expression-with-action, so the
8100 -- back-end will elaborate them in the context of the enclosing scope.
8102 -- Sprint syntax: do
8107 -- in expression end
8109 -- N_Expression_With_Actions
8111 -- Expression (Node3)
8112 -- plus fields for expression
8114 -- Note: In the final generated tree presented to the code generator,
8115 -- the actions list is always non-null, since there is no point in this
8116 -- node if the actions are Empty. During semantic analysis there are
8117 -- cases where it is convenient to temporarily generate an empty actions
8118 -- list. This arises in cases where we create such an empty actions
8119 -- list, and it may or may not end up being a place where additional
8120 -- actions are inserted. The expander removes such empty cases after
8121 -- the expression of the node is fully analyzed and expanded, at which
8122 -- point it is safe to remove it, since no more actions can be inserted.
8124 -- Note: In Modify_Tree_For_C, we never generate any declarations in
8125 -- the action list, which can contain only non-declarative statements.
8127 --------------------
8128 -- Free Statement --
8129 --------------------
8131 -- The N_Free_Statement node is generated as a result of a call to an
8132 -- instantiation of Unchecked_Deallocation. The instantiation of this
8133 -- generic is handled specially and generates this node directly.
8135 -- Sprint syntax: free expression
8138 -- Sloc is copied from the unchecked deallocation call
8139 -- Expression (Node3) argument to unchecked deallocation call
8140 -- Storage_Pool (Node1-Sem)
8141 -- Procedure_To_Call (Node2-Sem)
8142 -- Actual_Designated_Subtype (Node4-Sem)
8144 -- Note: in the case where a debug source file is generated, the Sloc
8145 -- for this node points to the FREE keyword in the Sprint file output.
8151 -- This node marks the point in a declarative part at which an entity
8152 -- declared therein becomes frozen. The expander places initialization
8153 -- procedures for types at those points. Gigi uses the freezing point
8154 -- to elaborate entities that may depend on previous private types.
8156 -- See the section in Einfo "Delayed Freezing and Elaboration" for
8157 -- a full description of the use of this node.
8159 -- The Entity field points back to the entity for the type (whose
8160 -- Freeze_Node field points back to this freeze node).
8162 -- The Actions field contains a list of declarations and statements
8163 -- generated by the expander which are associated with the freeze
8164 -- node, and are elaborated as though the freeze node were replaced
8165 -- by this sequence of actions.
8167 -- Note: the Sloc field in the freeze node references a construct
8168 -- associated with the freezing point. This is used for posting
8169 -- messages in some error/warning situations, e.g. the case where
8170 -- a primitive operation of a tagged type is declared too late.
8172 -- Sprint syntax: freeze entity-name [
8177 -- Sloc points near freeze point (see above special note)
8178 -- Entity (Node4-Sem)
8179 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
8180 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
8181 -- Actions (List1) (set to No_List if no freeze actions)
8182 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
8184 -- The Actions field holds actions associated with the freeze. These
8185 -- actions are elaborated at the point where the type is frozen.
8187 -- Note: in the case where a debug source file is generated, the Sloc
8188 -- for this node points to the FREEZE keyword in the Sprint file output.
8190 ---------------------------
8191 -- Freeze Generic Entity --
8192 ---------------------------
8194 -- The freeze point of an entity indicates the point at which the
8195 -- information needed to generate code for the entity is complete.
8196 -- The freeze node for an entity triggers expander activities, such as
8197 -- build initialization procedures, and backend activities, such as
8198 -- completing the elaboration of packages.
8200 -- For entities declared within a generic unit, for which no code is
8201 -- generated, the freeze point is not equally meaningful. However, in
8202 -- Ada 2012 several semantic checks on declarations must be delayed to
8203 -- the freeze point, and we need to include such a mark in the tree to
8204 -- trigger these checks. The Freeze_Generic_Entity node plays no other
8205 -- role, and is ignored by the expander and the back-end.
8207 -- Sprint syntax: freeze_generic entity-name
8209 -- N_Freeze_Generic_Entity
8210 -- Sloc points near freeze point
8211 -- Entity (Node4-Sem)
8213 --------------------------------
8214 -- Implicit Label Declaration --
8215 --------------------------------
8217 -- An implicit label declaration is created for every occurrence of a
8218 -- label on a statement or a label on a block or loop. It is chained
8219 -- in the declarations of the innermost enclosing block as specified
8220 -- in RM section 5.1 (3).
8222 -- The Defining_Identifier is the actual identifier for the statement
8223 -- identifier. Note that the occurrence of the label is a reference, NOT
8224 -- the defining occurrence. The defining occurrence occurs at the head
8225 -- of the innermost enclosing block, and is represented by this node.
8227 -- Note: from the grammar, this might better be called an implicit
8228 -- statement identifier declaration, but the term we choose seems
8229 -- friendlier, since at least informally statement identifiers are
8230 -- called labels in both cases (i.e. when used in labels, and when
8231 -- used as the identifiers of blocks and loops).
8233 -- Note: although this is logically a semantic node, since it does not
8234 -- correspond directly to a source syntax construction, these nodes are
8235 -- actually created by the parser in a post pass done just after parsing
8236 -- is complete, before semantic analysis is started (see Par.Labl).
8238 -- Sprint syntax: labelname : label;
8240 -- N_Implicit_Label_Declaration
8241 -- Sloc points to the << token for a statement identifier, or to the
8242 -- LOOP, DECLARE, or BEGIN token for a loop or block identifier
8243 -- Defining_Identifier (Node1)
8244 -- Label_Construct (Node2-Sem)
8246 -- Note: in the case where a debug source file is generated, the Sloc
8247 -- for this node points to the label name in the generated declaration.
8249 ---------------------
8250 -- Itype Reference --
8251 ---------------------
8253 -- This node is used to create a reference to an Itype. The only purpose
8254 -- is to make sure the Itype is defined if this is the first reference.
8256 -- A typical use of this node is when an Itype is to be referenced in
8257 -- two branches of an IF statement. In this case it is important that
8258 -- the first use of the Itype not be inside the conditional, since then
8259 -- it might not be defined if the other branch of the IF is taken, in
8260 -- the case where the definition generates elaboration code.
8262 -- The Itype field points to the referenced Itype
8264 -- Sprint syntax: reference itype-name
8266 -- N_Itype_Reference
8267 -- Sloc points to the node generating the reference
8268 -- Itype (Node1-Sem)
8270 -- Note: in the case where a debug source file is generated, the Sloc
8271 -- for this node points to the REFERENCE keyword in the file output.
8273 ---------------------
8274 -- Raise xxx Error --
8275 ---------------------
8277 -- One of these nodes is created during semantic analysis to replace
8278 -- a node for an expression that is determined to definitely raise
8279 -- the corresponding exception.
8281 -- The N_Raise_xxx_Error node may also stand alone in place
8282 -- of a declaration or statement, in which case it simply causes
8283 -- the exception to be raised (i.e. it is equivalent to a raise
8284 -- statement that raises the corresponding exception). This use
8285 -- is distinguished by the fact that the Etype in this case is
8286 -- Standard_Void_Type; in the subexpression case, the Etype is the
8287 -- same as the type of the subexpression which it replaces.
8289 -- If Condition is empty, then the raise is unconditional. If the
8290 -- Condition field is non-empty, it is a boolean expression which is
8291 -- first evaluated, and the exception is raised only if the value of the
8292 -- expression is True. In the unconditional case, the creation of this
8293 -- node is usually accompanied by a warning message (unless it appears
8294 -- within the right operand of a short-circuit form whose left argument
8295 -- is static and decisively eliminates elaboration of the raise
8296 -- operation). The condition field can ONLY be present when the node is
8297 -- used as a statement form; it must NOT be present in the case where
8298 -- the node appears within an expression.
8300 -- The exception is generated with a message that contains the
8301 -- file name and line number, and then appended text. The Reason
8302 -- code shows the text to be added. The Reason code is an element
8303 -- of the type Types.RT_Exception_Code, and indicates both the
8304 -- message to be added, and the exception to be raised (which must
8305 -- match the node type). The value is stored by storing a Uint which
8306 -- is the Pos value of the enumeration element in this type.
8308 -- Gigi restriction: This expander ensures that the type of the
8309 -- Condition field is always Standard.Boolean, even if the type
8310 -- in the source is some non-standard boolean type.
8312 -- Sprint syntax: [xxx_error "msg"]
8313 -- or: [xxx_error when condition "msg"]
8315 -- N_Raise_Constraint_Error
8316 -- Sloc references related construct
8317 -- Condition (Node1) (set to Empty if no condition)
8319 -- plus fields for expression
8321 -- N_Raise_Program_Error
8322 -- Sloc references related construct
8323 -- Condition (Node1) (set to Empty if no condition)
8325 -- plus fields for expression
8327 -- N_Raise_Storage_Error
8328 -- Sloc references related construct
8329 -- Condition (Node1) (set to Empty if no condition)
8331 -- plus fields for expression
8333 -- Note: Sloc is copied from the expression generating the exception.
8334 -- In the case where a debug source file is generated, the Sloc for
8335 -- this node points to the left bracket in the Sprint file output.
8337 -- Note: the back end may be required to translate these nodes into
8338 -- appropriate goto statements. See description of N_Push/Pop_xxx_Label.
8340 ---------------------------------------------
8341 -- Optimization of Exception Raise to Goto --
8342 ---------------------------------------------
8344 -- In some cases, the front end will determine that any exception raised
8345 -- by the back end for a certain exception should be transformed into a
8348 -- There are three kinds of exceptions raised by the back end (note that
8349 -- for this purpose we consider gigi to be part of the back end in the
8352 -- 1. Exceptions resulting from N_Raise_xxx_Error nodes
8353 -- 2. Exceptions from checks triggered by Do_xxx_Check flags
8354 -- 3. Other cases not specifically marked by the front end
8356 -- Normally all such exceptions are translated into calls to the proper
8357 -- Rcheck_xx procedure, where xx encodes both the exception to be raised
8358 -- and the exception message.
8360 -- The front end may determine that for a particular sequence of code,
8361 -- exceptions in any of these three categories for a particular builtin
8362 -- exception should result in a goto, rather than a call to Rcheck_xx.
8363 -- The exact sequence to be generated is:
8365 -- Local_Raise (exception'Identity);
8368 -- The front end marks such a sequence of code by bracketing it with
8369 -- push and pop nodes:
8371 -- N_Push_xxx_Label (referencing the label)
8373 -- (code where transformation is expected for exception xxx)
8377 -- The use of push/pop reflects the fact that such regions can properly
8378 -- nest, and one special case is a subregion in which no transformation
8379 -- is allowed. Such a region is marked by a N_Push_xxx_Label node whose
8380 -- Exception_Label field is Empty.
8382 -- N_Push_Constraint_Error_Label
8383 -- Sloc references first statement in region covered
8384 -- Exception_Label (Node5-Sem)
8386 -- N_Push_Program_Error_Label
8387 -- Sloc references first statement in region covered
8388 -- Exception_Label (Node5-Sem)
8390 -- N_Push_Storage_Error_Label
8391 -- Sloc references first statement in region covered
8392 -- Exception_Label (Node5-Sem)
8394 -- N_Pop_Constraint_Error_Label
8395 -- Sloc references last statement in region covered
8397 -- N_Pop_Program_Error_Label
8398 -- Sloc references last statement in region covered
8400 -- N_Pop_Storage_Error_Label
8401 -- Sloc references last statement in region covered
8407 -- For a number of purposes, we need to construct references to objects.
8408 -- These references are subsequently treated as normal access values.
8409 -- An example is the construction of the parameter block passed to a
8410 -- task entry. The N_Reference node is provided for this purpose. It is
8411 -- similar in effect to the use of the Unrestricted_Access attribute,
8412 -- and like Unrestricted_Access can be applied to objects which would
8413 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
8414 -- objects which are not aliased, and slices). In addition it can be
8415 -- applied to composite type values as well as objects, including string
8416 -- values and aggregates.
8418 -- Note: we use the Prefix field for this expression so that the
8419 -- resulting node can be treated using common code with the attribute
8420 -- nodes for the 'Access and related attributes. Logically it would make
8421 -- more sense to call it an Expression field, but then we would have to
8422 -- special case the treatment of the N_Reference node.
8424 -- Note: evaluating a N_Reference node is guaranteed to yield a non-null
8425 -- value at run time. Therefore, it is valid to set Is_Known_Non_Null on
8426 -- a temporary initialized to a N_Reference node in order to eliminate
8427 -- superfluous access checks.
8429 -- Sprint syntax: prefix'reference
8432 -- Sloc is copied from the expression
8434 -- plus fields for expression
8436 -- Note: in the case where a debug source file is generated, the Sloc
8437 -- for this node points to the quote in the Sprint file output.
8443 -- SCIL nodes are special nodes added to the tree when the CodePeer mode
8444 -- is active. They are only generated if SCIL generation is enabled.
8445 -- A standard tree-walk will not encounter these nodes even if they
8446 -- are present; these nodes are only accessible via the function
8447 -- SCIL_LL.Get_SCIL_Node. These nodes have no associated dynamic
8450 -- Sprint syntax: [ <node kind> ]
8451 -- No semantic field values are displayed.
8453 -- N_SCIL_Dispatch_Table_Tag_Init
8454 -- Sloc references a node for a tag initialization
8455 -- SCIL_Entity (Node4-Sem)
8457 -- An N_SCIL_Dispatch_Table_Tag_Init node may be associated (via
8458 -- Get_SCIL_Node) with the N_Object_Declaration node corresponding to
8459 -- the declaration of the dispatch table for a tagged type.
8461 -- N_SCIL_Dispatching_Call
8462 -- Sloc references the node of a dispatching call
8463 -- SCIL_Target_Prim (Node2-Sem)
8464 -- SCIL_Entity (Node4-Sem)
8465 -- SCIL_Controlling_Tag (Node5-Sem)
8467 -- An N_Scil_Dispatching call node may be associated (via Get_SCIL_Node)
8468 -- with the N_Procedure_Call_Statement or N_Function_Call node (or a
8469 -- rewriting thereof) corresponding to a dispatching call.
8471 -- N_SCIL_Membership_Test
8472 -- Sloc references the node of a membership test
8473 -- SCIL_Tag_Value (Node5-Sem)
8474 -- SCIL_Entity (Node4-Sem)
8476 -- An N_Scil_Membership_Test node may be associated (via Get_SCIL_Node)
8477 -- with the N_In node (or a rewriting thereof) corresponding to a
8478 -- classwide membership test.
8480 --------------------------
8481 -- Unchecked Expression --
8482 --------------------------
8484 -- An unchecked expression is one that must be analyzed and resolved
8485 -- with all checks off, regardless of the current setting of scope
8488 -- Sprint syntax: `(expression)
8490 -- Note: this node is always removed from the tree (and replaced by
8491 -- its constituent expression) on completion of analysis, so it only
8492 -- appears in intermediate trees, and will never be seen by Gigi.
8494 -- N_Unchecked_Expression
8495 -- Sloc is a copy of the Sloc of the expression
8496 -- Expression (Node3)
8497 -- plus fields for expression
8499 -- Note: in the case where a debug source file is generated, the Sloc
8500 -- for this node points to the back quote in the Sprint file output.
8502 -------------------------------
8503 -- Unchecked Type Conversion --
8504 -------------------------------
8506 -- An unchecked type conversion node represents the semantic action
8507 -- corresponding to a call to an instantiation of Unchecked_Conversion.
8508 -- It is generated as a result of actual use of Unchecked_Conversion
8509 -- and also the expander generates unchecked type conversion nodes
8510 -- directly for expansion of complex semantic actions.
8512 -- Note: an unchecked type conversion is a variable as far as the
8513 -- semantics are concerned, which is convenient for the expander.
8514 -- This does not change what Ada source programs are legal, since
8515 -- clearly a function call to an instantiation of Unchecked_Conversion
8516 -- is not a variable in any case.
8518 -- Sprint syntax: subtype-mark!(expression)
8520 -- N_Unchecked_Type_Conversion
8521 -- Sloc points to related node in source
8522 -- Subtype_Mark (Node4)
8523 -- Expression (Node3)
8524 -- Kill_Range_Check (Flag11-Sem)
8525 -- No_Truncation (Flag17-Sem)
8526 -- plus fields for expression
8528 -- Note: in the case where a debug source file is generated, the Sloc
8529 -- for this node points to the exclamation in the Sprint file output.
8531 -----------------------------------
8532 -- Validate_Unchecked_Conversion --
8533 -----------------------------------
8535 -- The front end does most of the validation of unchecked conversion,
8536 -- including checking sizes (this is done after the back end is called
8537 -- to take advantage of back-annotation of calculated sizes).
8539 -- The front end also deals with specific cases that are not allowed
8540 -- e.g. involving unconstrained array types.
8542 -- For the case of the standard gigi backend, this means that all
8543 -- checks are done in the front end.
8545 -- However, in the case of specialized back-ends, in particular the JVM
8546 -- backend in the past, additional requirements and restrictions may
8547 -- apply to unchecked conversion, and these are most conveniently
8548 -- performed in the specialized back-end.
8550 -- To accommodate this requirement, for such back ends, the following
8551 -- special node is generated recording an unchecked conversion that
8552 -- needs to be validated. The back end should post an appropriate
8553 -- error message if the unchecked conversion is invalid or warrants
8554 -- a special warning message.
8556 -- Source_Type and Target_Type point to the entities for the two
8557 -- types involved in the unchecked conversion instantiation that
8558 -- is to be validated.
8560 -- Sprint syntax: validate Unchecked_Conversion (source, target);
8562 -- N_Validate_Unchecked_Conversion
8563 -- Sloc points to instantiation (location for warning message)
8564 -- Source_Type (Node1-Sem)
8565 -- Target_Type (Node2-Sem)
8567 -- Note: in the case where a debug source file is generated, the Sloc
8568 -- for this node points to the VALIDATE keyword in the file output.
8570 -------------------------------
8571 -- Variable_Reference_Marker --
8572 -------------------------------
8574 -- This node is created during the analysis of direct or expanded names,
8575 -- and the resolution of entry and subprogram calls. It performs several
8578 -- * Variable reference markers provide a uniform model for handling
8579 -- variable references by the ABE mechanism, regardless of whether
8580 -- expansion took place.
8582 -- * The variable reference marker captures the entity of the variable
8583 -- being read or written.
8585 -- * The variable reference markers aid the ABE Processing phase by
8586 -- signaling the presence of a call in case the original variable
8587 -- reference was transformed by expansion.
8589 -- Sprint syntax: r#target# -- for a read
8590 -- rw#target# -- for a read/write
8591 -- w#target# -- for a write
8593 -- The Sprint syntax shown above is not enabled by default
8595 -- N_Variable_Reference_Marker
8596 -- Sloc points to Sloc of original variable reference
8597 -- Target (Node1-Sem)
8598 -- Is_Elaboration_Checks_OK_Node (Flag1-Sem)
8599 -- Is_SPARK_Mode_On_Node (Flag2-Sem)
8600 -- Is_Elaboration_Warnings_OK_Node (Flag3-Sem)
8601 -- Is_Read (Flag4-Sem)
8602 -- Is_Write (Flag5-Sem)
8608 -- Used as the contents of the Nkind field of the dummy Empty node and in
8609 -- some other situations to indicate an uninitialized value.
8612 -- Chars (Name1) is set to No_Name
8618 -- Used as the contents of the Nkind field of the dummy Error node.
8619 -- Has an Etype field, which gets set to Any_Type later on, to help
8620 -- error recovery (Error_Posted is also set in the Error node).
8623 -- Chars (Name1) is set to Error_Name
8624 -- Etype (Node5-Sem)
8626 --------------------------
8627 -- Node Type Definition --
8628 --------------------------
8630 -- The following is the definition of the Node_Kind type. As previously
8631 -- discussed, this is separated off to allow rearrangement of the order to
8632 -- facilitate definition of subtype ranges. The comments show the subtype
8633 -- classes which apply to each set of node kinds. The first entry in the
8634 -- comment characterizes the following list of nodes.
8639 -- N_Representation_Clause
8643 N_Enumeration_Representation_Clause,
8645 N_Record_Representation_Clause,
8647 -- N_Representation_Clause, N_Has_Chars
8649 N_Attribute_Definition_Clause,
8654 N_Pragma_Argument_Association,
8656 -- N_Has_Etype, N_Has_Chars
8658 -- Note: of course N_Error does not really have Etype or Chars fields,
8659 -- and any attempt to access these fields in N_Error will cause an
8660 -- error, but historically this always has been positioned so that an
8661 -- "in N_Has_Chars" or "in N_Has_Etype" test yields true for N_Error.
8662 -- Most likely this makes coding easier somewhere but still seems
8663 -- undesirable. To be investigated some time ???
8667 -- N_Entity, N_Has_Etype, N_Has_Chars
8669 N_Defining_Character_Literal,
8670 N_Defining_Identifier,
8671 N_Defining_Operator_Symbol,
8673 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
8677 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
8678 -- N_Has_Chars, N_Has_Entity
8683 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
8684 -- N_Has_Chars, N_Has_Entity
8686 N_Character_Literal,
8688 -- N_Binary_Op, N_Op, N_Subexpr,
8689 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
8696 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
8697 -- N_Has_Etype, N_Has_Chars, N_Has_Entity, N_Multiplying_Operator
8704 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
8705 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
8709 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
8710 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean, N_Op_Compare
8719 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
8720 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
8725 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
8726 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
8732 N_Op_Shift_Right_Arithmetic,
8734 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
8735 -- N_Has_Chars, N_Has_Entity
8742 -- N_Subexpr, N_Has_Etype, N_Has_Entity
8744 N_Attribute_Reference,
8746 -- N_Subexpr, N_Has_Etype, N_Membership_Test
8751 -- N_Subexpr, N_Has_Etype, N_Short_Circuit
8756 -- N_Subexpr, N_Has_Etype, N_Subprogram_Call
8759 N_Procedure_Call_Statement,
8761 -- N_Subexpr, N_Has_Etype, N_Raise_xxx_Error
8763 N_Raise_Constraint_Error,
8764 N_Raise_Program_Error,
8765 N_Raise_Storage_Error,
8767 -- N_Subexpr, N_Has_Etype, N_Numeric_Or_String_Literal
8773 -- N_Subexpr, N_Has_Etype
8775 N_Explicit_Dereference,
8776 N_Expression_With_Actions,
8778 N_Indexed_Component,
8780 N_Qualified_Expression,
8781 N_Quantified_Expression,
8786 N_Extension_Aggregate,
8790 N_Selected_Component,
8794 N_Unchecked_Expression,
8795 N_Unchecked_Type_Conversion,
8799 N_Subtype_Indication,
8803 N_Component_Declaration,
8804 N_Entry_Declaration,
8805 N_Expression_Function,
8806 N_Formal_Object_Declaration,
8807 N_Formal_Type_Declaration,
8808 N_Full_Type_Declaration,
8809 N_Incomplete_Type_Declaration,
8810 N_Iterator_Specification,
8811 N_Loop_Parameter_Specification,
8812 N_Object_Declaration,
8813 N_Protected_Type_Declaration,
8814 N_Private_Extension_Declaration,
8815 N_Private_Type_Declaration,
8816 N_Subtype_Declaration,
8818 -- N_Subprogram_Specification, N_Declaration
8820 N_Function_Specification,
8821 N_Procedure_Specification,
8823 -- N_Access_To_Subprogram_Definition
8825 N_Access_Function_Definition,
8826 N_Access_Procedure_Definition,
8828 -- N_Later_Decl_Item
8830 N_Task_Type_Declaration,
8832 -- N_Body_Stub, N_Later_Decl_Item
8834 N_Package_Body_Stub,
8835 N_Protected_Body_Stub,
8836 N_Subprogram_Body_Stub,
8839 -- N_Generic_Instantiation, N_Later_Decl_Item
8840 -- N_Subprogram_Instantiation
8842 N_Function_Instantiation,
8843 N_Procedure_Instantiation,
8845 -- N_Generic_Instantiation, N_Later_Decl_Item
8847 N_Package_Instantiation,
8849 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
8854 -- N_Later_Decl_Item, N_Proper_Body
8859 -- N_Later_Decl_Item
8861 N_Implicit_Label_Declaration,
8862 N_Package_Declaration,
8863 N_Single_Task_Declaration,
8864 N_Subprogram_Declaration,
8865 N_Use_Package_Clause,
8867 -- N_Generic_Declaration, N_Later_Decl_Item
8869 N_Generic_Package_Declaration,
8870 N_Generic_Subprogram_Declaration,
8872 -- N_Array_Type_Definition
8874 N_Constrained_Array_Definition,
8875 N_Unconstrained_Array_Definition,
8877 -- N_Renaming_Declaration
8879 N_Exception_Renaming_Declaration,
8880 N_Object_Renaming_Declaration,
8881 N_Package_Renaming_Declaration,
8882 N_Subprogram_Renaming_Declaration,
8884 -- N_Generic_Renaming_Declaration, N_Renaming_Declaration
8886 N_Generic_Function_Renaming_Declaration,
8887 N_Generic_Package_Renaming_Declaration,
8888 N_Generic_Procedure_Renaming_Declaration,
8890 -- N_Statement_Other_Than_Procedure_Call
8894 N_Assignment_Statement,
8895 N_Asynchronous_Select,
8899 N_Compound_Statement,
8900 N_Conditional_Entry_Call,
8902 -- N_Statement_Other_Than_Procedure_Call, N_Delay_Statement
8904 N_Delay_Relative_Statement,
8905 N_Delay_Until_Statement,
8907 -- N_Statement_Other_Than_Procedure_Call
8909 N_Entry_Call_Statement,
8915 N_Requeue_Statement,
8916 N_Simple_Return_Statement,
8917 N_Extended_Return_Statement,
8921 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
8928 N_Accept_Alternative,
8929 N_Delay_Alternative,
8931 N_Entry_Body_Formal_Part,
8933 N_Terminate_Alternative,
8935 -- N_Formal_Subprogram_Declaration
8937 N_Formal_Abstract_Subprogram_Declaration,
8938 N_Formal_Concrete_Subprogram_Declaration,
8940 -- N_Push_xxx_Label, N_Push_Pop_xxx_Label
8942 N_Push_Constraint_Error_Label,
8943 N_Push_Program_Error_Label,
8944 N_Push_Storage_Error_Label,
8946 -- N_Pop_xxx_Label, N_Push_Pop_xxx_Label
8948 N_Pop_Constraint_Error_Label,
8949 N_Pop_Program_Error_Label,
8950 N_Pop_Storage_Error_Label,
8954 N_SCIL_Dispatch_Table_Tag_Init,
8955 N_SCIL_Dispatching_Call,
8956 N_SCIL_Membership_Test,
8958 -- Other nodes (not part of any subtype class)
8961 N_Abstract_Subprogram_Declaration,
8962 N_Access_Definition,
8963 N_Access_To_Object_Definition,
8964 N_Aspect_Specification,
8966 N_Case_Expression_Alternative,
8967 N_Case_Statement_Alternative,
8969 N_Compilation_Unit_Aux,
8970 N_Component_Association,
8971 N_Component_Definition,
8974 N_Derived_Type_Definition,
8975 N_Decimal_Fixed_Point_Definition,
8976 N_Defining_Program_Unit_Name,
8979 N_Digits_Constraint,
8980 N_Discriminant_Association,
8981 N_Discriminant_Specification,
8982 N_Enumeration_Type_Definition,
8984 N_Entry_Call_Alternative,
8985 N_Entry_Index_Specification,
8986 N_Exception_Declaration,
8987 N_Exception_Handler,
8988 N_Floating_Point_Definition,
8989 N_Formal_Decimal_Fixed_Point_Definition,
8990 N_Formal_Derived_Type_Definition,
8991 N_Formal_Discrete_Type_Definition,
8992 N_Formal_Floating_Point_Definition,
8993 N_Formal_Modular_Type_Definition,
8994 N_Formal_Ordinary_Fixed_Point_Definition,
8995 N_Formal_Package_Declaration,
8996 N_Formal_Private_Type_Definition,
8997 N_Formal_Incomplete_Type_Definition,
8998 N_Formal_Signed_Integer_Type_Definition,
9000 N_Freeze_Generic_Entity,
9001 N_Generic_Association,
9002 N_Handled_Sequence_Of_Statements,
9003 N_Index_Or_Discriminant_Constraint,
9004 N_Iterated_Component_Association,
9007 N_Modular_Type_Definition,
9008 N_Number_Declaration,
9009 N_Ordinary_Fixed_Point_Definition,
9011 N_Package_Specification,
9012 N_Parameter_Association,
9013 N_Parameter_Specification,
9015 N_Protected_Definition,
9017 N_Real_Range_Specification,
9018 N_Record_Definition,
9019 N_Signed_Integer_Type_Definition,
9020 N_Single_Protected_Declaration,
9023 N_Triggering_Alternative,
9025 N_Validate_Unchecked_Conversion,
9026 N_Variable_Reference_Marker,
9032 for Node_Kind'Size use 8;
9033 -- The data structures in Atree assume this
9035 ----------------------------
9036 -- Node Class Definitions --
9037 ----------------------------
9039 subtype N_Access_To_Subprogram_Definition is Node_Kind range
9040 N_Access_Function_Definition ..
9041 N_Access_Procedure_Definition;
9043 subtype N_Array_Type_Definition is Node_Kind range
9044 N_Constrained_Array_Definition ..
9045 N_Unconstrained_Array_Definition;
9047 subtype N_Binary_Op is Node_Kind range
9049 N_Op_Shift_Right_Arithmetic;
9051 subtype N_Body_Stub is Node_Kind range
9052 N_Package_Body_Stub ..
9055 subtype N_Declaration is Node_Kind range
9056 N_Component_Declaration ..
9057 N_Procedure_Specification;
9058 -- Note: this includes all constructs normally thought of as declarations
9059 -- except those which are separately grouped as later declarations.
9061 subtype N_Delay_Statement is Node_Kind range
9062 N_Delay_Relative_Statement ..
9063 N_Delay_Until_Statement;
9065 subtype N_Direct_Name is Node_Kind range
9067 N_Character_Literal;
9069 subtype N_Entity is Node_Kind range
9070 N_Defining_Character_Literal ..
9071 N_Defining_Operator_Symbol;
9073 subtype N_Formal_Subprogram_Declaration is Node_Kind range
9074 N_Formal_Abstract_Subprogram_Declaration ..
9075 N_Formal_Concrete_Subprogram_Declaration;
9077 subtype N_Generic_Declaration is Node_Kind range
9078 N_Generic_Package_Declaration ..
9079 N_Generic_Subprogram_Declaration;
9081 subtype N_Generic_Instantiation is Node_Kind range
9082 N_Function_Instantiation ..
9083 N_Package_Instantiation;
9085 subtype N_Generic_Renaming_Declaration is Node_Kind range
9086 N_Generic_Function_Renaming_Declaration ..
9087 N_Generic_Procedure_Renaming_Declaration;
9089 subtype N_Has_Chars is Node_Kind range
9090 N_Attribute_Definition_Clause ..
9093 subtype N_Has_Entity is Node_Kind range
9095 N_Attribute_Reference;
9096 -- Nodes that have Entity fields
9097 -- Warning: DOES NOT INCLUDE N_Freeze_Entity, N_Freeze_Generic_Entity,
9098 -- N_Aspect_Specification, or N_Attribute_Definition_Clause.
9100 subtype N_Has_Etype is Node_Kind range
9102 N_Subtype_Indication;
9104 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
9108 subtype N_Multiplying_Operator is Node_Kind range
9112 subtype N_Later_Decl_Item is Node_Kind range
9113 N_Task_Type_Declaration ..
9114 N_Generic_Subprogram_Declaration;
9115 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and includes
9116 -- only those items which can appear as later declarative items. This also
9117 -- includes N_Implicit_Label_Declaration which is not specifically in the
9118 -- grammar but may appear as a valid later declarative items. It does NOT
9119 -- include N_Pragma which can also appear among later declarative items.
9120 -- It does however include N_Protected_Body, which is a bit peculiar, but
9121 -- harmless since this cannot appear in Ada 83 mode anyway.
9123 subtype N_Membership_Test is Node_Kind range
9127 subtype N_Numeric_Or_String_Literal is Node_Kind range
9128 N_Integer_Literal ..
9131 subtype N_Op is Node_Kind range
9135 subtype N_Op_Boolean is Node_Kind range
9138 -- Binary operators which take operands of a boolean type, and yield
9139 -- a result of a boolean type.
9141 subtype N_Op_Compare is Node_Kind range
9145 subtype N_Op_Shift is Node_Kind range
9147 N_Op_Shift_Right_Arithmetic;
9149 subtype N_Proper_Body is Node_Kind range
9153 subtype N_Push_xxx_Label is Node_Kind range
9154 N_Push_Constraint_Error_Label ..
9155 N_Push_Storage_Error_Label;
9157 subtype N_Pop_xxx_Label is Node_Kind range
9158 N_Pop_Constraint_Error_Label ..
9159 N_Pop_Storage_Error_Label;
9161 subtype N_Push_Pop_xxx_Label is Node_Kind range
9162 N_Push_Constraint_Error_Label ..
9163 N_Pop_Storage_Error_Label;
9165 subtype N_Raise_xxx_Error is Node_Kind range
9166 N_Raise_Constraint_Error ..
9167 N_Raise_Storage_Error;
9169 subtype N_Renaming_Declaration is Node_Kind range
9170 N_Exception_Renaming_Declaration ..
9171 N_Generic_Procedure_Renaming_Declaration;
9173 subtype N_Representation_Clause is Node_Kind range
9175 N_Attribute_Definition_Clause;
9177 subtype N_Short_Circuit is Node_Kind range
9181 subtype N_SCIL_Node is Node_Kind range
9182 N_SCIL_Dispatch_Table_Tag_Init ..
9183 N_SCIL_Membership_Test;
9185 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
9186 N_Abort_Statement ..
9188 -- Note that this includes all statement types except for the cases of the
9189 -- N_Procedure_Call_Statement which is considered to be a subexpression
9190 -- (since overloading is possible, so it needs to go through the normal
9191 -- overloading resolution for expressions).
9193 subtype N_Subprogram_Call is Node_Kind range
9195 N_Procedure_Call_Statement;
9197 subtype N_Subprogram_Instantiation is Node_Kind range
9198 N_Function_Instantiation ..
9199 N_Procedure_Instantiation;
9201 subtype N_Has_Condition is Node_Kind range
9203 N_Terminate_Alternative;
9204 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
9206 subtype N_Subexpr is Node_Kind range
9208 N_Unchecked_Type_Conversion;
9209 -- Nodes with expression fields
9211 subtype N_Subprogram_Specification is Node_Kind range
9212 N_Function_Specification ..
9213 N_Procedure_Specification;
9215 subtype N_Unary_Op is Node_Kind range
9219 subtype N_Unit_Body is Node_Kind range
9223 ---------------------------
9224 -- Node Access Functions --
9225 ---------------------------
9227 -- The following functions return the contents of the indicated field of
9228 -- the node referenced by the argument, which is a Node_Id. They provide
9229 -- logical access to fields in the node which could be accessed using the
9230 -- Atree.Unchecked_Access package, but the idea is always to use these
9231 -- higher level routines which preserve strong typing. In debug mode,
9232 -- these routines check that they are being applied to an appropriate
9233 -- node, as well as checking that the node is in range.
9235 function Abort_Present
9236 (N : Node_Id) return Boolean; -- Flag15
9238 function Abortable_Part
9239 (N : Node_Id) return Node_Id; -- Node2
9241 function Abstract_Present
9242 (N : Node_Id) return Boolean; -- Flag4
9244 function Accept_Handler_Records
9245 (N : Node_Id) return List_Id; -- List5
9247 function Accept_Statement
9248 (N : Node_Id) return Node_Id; -- Node2
9250 function Access_Definition
9251 (N : Node_Id) return Node_Id; -- Node3
9253 function Access_To_Subprogram_Definition
9254 (N : Node_Id) return Node_Id; -- Node3
9256 function Access_Types_To_Process
9257 (N : Node_Id) return Elist_Id; -- Elist2
9260 (N : Node_Id) return List_Id; -- List1
9262 function Activation_Chain_Entity
9263 (N : Node_Id) return Node_Id; -- Node3
9265 function Acts_As_Spec
9266 (N : Node_Id) return Boolean; -- Flag4
9268 function Actual_Designated_Subtype
9269 (N : Node_Id) return Node_Id; -- Node4
9271 function Address_Warning_Posted
9272 (N : Node_Id) return Boolean; -- Flag18
9274 function Aggregate_Bounds
9275 (N : Node_Id) return Node_Id; -- Node3
9277 function Aliased_Present
9278 (N : Node_Id) return Boolean; -- Flag4
9280 function Alloc_For_BIP_Return
9281 (N : Node_Id) return Boolean; -- Flag1
9284 (N : Node_Id) return Boolean; -- Flag11
9286 function All_Present
9287 (N : Node_Id) return Boolean; -- Flag15
9289 function Alternatives
9290 (N : Node_Id) return List_Id; -- List4
9292 function Ancestor_Part
9293 (N : Node_Id) return Node_Id; -- Node3
9295 function Atomic_Sync_Required
9296 (N : Node_Id) return Boolean; -- Flag14
9298 function Array_Aggregate
9299 (N : Node_Id) return Node_Id; -- Node3
9301 function Aspect_Rep_Item
9302 (N : Node_Id) return Node_Id; -- Node2
9304 function Assignment_OK
9305 (N : Node_Id) return Boolean; -- Flag15
9307 function Associated_Node
9308 (N : Node_Id) return Node_Id; -- Node4
9310 function At_End_Proc
9311 (N : Node_Id) return Node_Id; -- Node1
9313 function Attribute_Name
9314 (N : Node_Id) return Name_Id; -- Name2
9316 function Aux_Decls_Node
9317 (N : Node_Id) return Node_Id; -- Node5
9319 function Backwards_OK
9320 (N : Node_Id) return Boolean; -- Flag6
9322 function Bad_Is_Detected
9323 (N : Node_Id) return Boolean; -- Flag15
9326 (N : Node_Id) return Boolean; -- Flag5
9328 function Body_Required
9329 (N : Node_Id) return Boolean; -- Flag13
9331 function Body_To_Inline
9332 (N : Node_Id) return Node_Id; -- Node3
9334 function Box_Present
9335 (N : Node_Id) return Boolean; -- Flag15
9337 function Char_Literal_Value
9338 (N : Node_Id) return Uint; -- Uint2
9341 (N : Node_Id) return Name_Id; -- Name1
9343 function Check_Address_Alignment
9344 (N : Node_Id) return Boolean; -- Flag11
9346 function Choice_Parameter
9347 (N : Node_Id) return Node_Id; -- Node2
9350 (N : Node_Id) return List_Id; -- List1
9352 function Class_Present
9353 (N : Node_Id) return Boolean; -- Flag6
9355 function Classifications
9356 (N : Node_Id) return Node_Id; -- Node3
9358 function Cleanup_Actions
9359 (N : Node_Id) return List_Id; -- List5
9361 function Comes_From_Extended_Return_Statement
9362 (N : Node_Id) return Boolean; -- Flag18
9364 function Compile_Time_Known_Aggregate
9365 (N : Node_Id) return Boolean; -- Flag18
9367 function Component_Associations
9368 (N : Node_Id) return List_Id; -- List2
9370 function Component_Clauses
9371 (N : Node_Id) return List_Id; -- List3
9373 function Component_Definition
9374 (N : Node_Id) return Node_Id; -- Node4
9376 function Component_Items
9377 (N : Node_Id) return List_Id; -- List3
9379 function Component_List
9380 (N : Node_Id) return Node_Id; -- Node1
9382 function Component_Name
9383 (N : Node_Id) return Node_Id; -- Node1
9385 function Componentwise_Assignment
9386 (N : Node_Id) return Boolean; -- Flag14
9389 (N : Node_Id) return Node_Id; -- Node1
9391 function Condition_Actions
9392 (N : Node_Id) return List_Id; -- List3
9394 function Config_Pragmas
9395 (N : Node_Id) return List_Id; -- List4
9397 function Constant_Present
9398 (N : Node_Id) return Boolean; -- Flag17
9401 (N : Node_Id) return Node_Id; -- Node3
9403 function Constraints
9404 (N : Node_Id) return List_Id; -- List1
9406 function Context_Installed
9407 (N : Node_Id) return Boolean; -- Flag13
9409 function Context_Pending
9410 (N : Node_Id) return Boolean; -- Flag16
9412 function Context_Items
9413 (N : Node_Id) return List_Id; -- List1
9415 function Contract_Test_Cases
9416 (N : Node_Id) return Node_Id; -- Node2
9418 function Controlling_Argument
9419 (N : Node_Id) return Node_Id; -- Node1
9421 function Conversion_OK
9422 (N : Node_Id) return Boolean; -- Flag14
9424 function Convert_To_Return_False
9425 (N : Node_Id) return Boolean; -- Flag13
9427 function Corresponding_Aspect
9428 (N : Node_Id) return Node_Id; -- Node3
9430 function Corresponding_Body
9431 (N : Node_Id) return Node_Id; -- Node5
9433 function Corresponding_Formal_Spec
9434 (N : Node_Id) return Node_Id; -- Node3
9436 function Corresponding_Generic_Association
9437 (N : Node_Id) return Node_Id; -- Node5
9439 function Corresponding_Integer_Value
9440 (N : Node_Id) return Uint; -- Uint4
9442 function Corresponding_Spec
9443 (N : Node_Id) return Entity_Id; -- Node5
9445 function Corresponding_Spec_Of_Stub
9446 (N : Node_Id) return Node_Id; -- Node2
9448 function Corresponding_Stub
9449 (N : Node_Id) return Node_Id; -- Node3
9451 function Dcheck_Function
9452 (N : Node_Id) return Entity_Id; -- Node5
9454 function Declarations
9455 (N : Node_Id) return List_Id; -- List2
9457 function Default_Expression
9458 (N : Node_Id) return Node_Id; -- Node5
9460 function Default_Storage_Pool
9461 (N : Node_Id) return Node_Id; -- Node3
9463 function Default_Name
9464 (N : Node_Id) return Node_Id; -- Node2
9466 function Defining_Identifier
9467 (N : Node_Id) return Entity_Id; -- Node1
9469 function Defining_Unit_Name
9470 (N : Node_Id) return Node_Id; -- Node1
9472 function Delay_Alternative
9473 (N : Node_Id) return Node_Id; -- Node4
9475 function Delay_Statement
9476 (N : Node_Id) return Node_Id; -- Node2
9478 function Delta_Expression
9479 (N : Node_Id) return Node_Id; -- Node3
9481 function Digits_Expression
9482 (N : Node_Id) return Node_Id; -- Node2
9484 function Discr_Check_Funcs_Built
9485 (N : Node_Id) return Boolean; -- Flag11
9487 function Discrete_Choices
9488 (N : Node_Id) return List_Id; -- List4
9490 function Discrete_Range
9491 (N : Node_Id) return Node_Id; -- Node4
9493 function Discrete_Subtype_Definition
9494 (N : Node_Id) return Node_Id; -- Node4
9496 function Discrete_Subtype_Definitions
9497 (N : Node_Id) return List_Id; -- List2
9499 function Discriminant_Specifications
9500 (N : Node_Id) return List_Id; -- List4
9502 function Discriminant_Type
9503 (N : Node_Id) return Node_Id; -- Node5
9505 function Do_Accessibility_Check
9506 (N : Node_Id) return Boolean; -- Flag13
9508 function Do_Discriminant_Check
9509 (N : Node_Id) return Boolean; -- Flag3
9511 function Do_Division_Check
9512 (N : Node_Id) return Boolean; -- Flag13
9514 function Do_Length_Check
9515 (N : Node_Id) return Boolean; -- Flag4
9517 function Do_Overflow_Check
9518 (N : Node_Id) return Boolean; -- Flag17
9520 function Do_Range_Check
9521 (N : Node_Id) return Boolean; -- Flag9
9523 function Do_Storage_Check
9524 (N : Node_Id) return Boolean; -- Flag17
9526 function Do_Tag_Check
9527 (N : Node_Id) return Boolean; -- Flag13
9529 function Elaborate_All_Desirable
9530 (N : Node_Id) return Boolean; -- Flag9
9532 function Elaborate_All_Present
9533 (N : Node_Id) return Boolean; -- Flag14
9535 function Elaborate_Desirable
9536 (N : Node_Id) return Boolean; -- Flag11
9538 function Elaborate_Present
9539 (N : Node_Id) return Boolean; -- Flag4
9541 function Else_Actions
9542 (N : Node_Id) return List_Id; -- List3
9544 function Else_Statements
9545 (N : Node_Id) return List_Id; -- List4
9547 function Elsif_Parts
9548 (N : Node_Id) return List_Id; -- List3
9550 function Enclosing_Variant
9551 (N : Node_Id) return Node_Id; -- Node2
9554 (N : Node_Id) return Node_Id; -- Node4
9557 (N : Node_Id) return Uint; -- Uint5
9560 (N : Node_Id) return Node_Id; -- Node4
9562 function Entity_Or_Associated_Node
9563 (N : Node_Id) return Node_Id; -- Node4
9565 function Entry_Body_Formal_Part
9566 (N : Node_Id) return Node_Id; -- Node5
9568 function Entry_Call_Alternative
9569 (N : Node_Id) return Node_Id; -- Node1
9571 function Entry_Call_Statement
9572 (N : Node_Id) return Node_Id; -- Node1
9574 function Entry_Direct_Name
9575 (N : Node_Id) return Node_Id; -- Node1
9577 function Entry_Index
9578 (N : Node_Id) return Node_Id; -- Node5
9580 function Entry_Index_Specification
9581 (N : Node_Id) return Node_Id; -- Node4
9584 (N : Node_Id) return Node_Id; -- Node5
9586 function Exception_Choices
9587 (N : Node_Id) return List_Id; -- List4
9589 function Exception_Handlers
9590 (N : Node_Id) return List_Id; -- List5
9592 function Exception_Junk
9593 (N : Node_Id) return Boolean; -- Flag8
9595 function Exception_Label
9596 (N : Node_Id) return Node_Id; -- Node5
9598 function Explicit_Actual_Parameter
9599 (N : Node_Id) return Node_Id; -- Node3
9601 function Expansion_Delayed
9602 (N : Node_Id) return Boolean; -- Flag11
9604 function Explicit_Generic_Actual_Parameter
9605 (N : Node_Id) return Node_Id; -- Node1
9608 (N : Node_Id) return Node_Id; -- Node3
9610 function Expression_Copy
9611 (N : Node_Id) return Node_Id; -- Node2
9613 function Expressions
9614 (N : Node_Id) return List_Id; -- List1
9617 (N : Node_Id) return Node_Id; -- Node3
9619 function First_Inlined_Subprogram
9620 (N : Node_Id) return Entity_Id; -- Node3
9623 (N : Node_Id) return Boolean; -- Flag5
9625 function First_Named_Actual
9626 (N : Node_Id) return Node_Id; -- Node4
9628 function First_Real_Statement
9629 (N : Node_Id) return Node_Id; -- Node2
9631 function First_Subtype_Link
9632 (N : Node_Id) return Entity_Id; -- Node5
9634 function Float_Truncate
9635 (N : Node_Id) return Boolean; -- Flag11
9637 function Formal_Type_Definition
9638 (N : Node_Id) return Node_Id; -- Node3
9640 function Forwards_OK
9641 (N : Node_Id) return Boolean; -- Flag5
9643 function From_Aspect_Specification
9644 (N : Node_Id) return Boolean; -- Flag13
9646 function From_At_End
9647 (N : Node_Id) return Boolean; -- Flag4
9649 function From_At_Mod
9650 (N : Node_Id) return Boolean; -- Flag4
9652 function From_Conditional_Expression
9653 (N : Node_Id) return Boolean; -- Flag1
9655 function From_Default
9656 (N : Node_Id) return Boolean; -- Flag6
9658 function Generalized_Indexing
9659 (N : Node_Id) return Node_Id; -- Node4
9661 function Generic_Associations
9662 (N : Node_Id) return List_Id; -- List3
9664 function Generic_Formal_Declarations
9665 (N : Node_Id) return List_Id; -- List2
9667 function Generic_Parent
9668 (N : Node_Id) return Node_Id; -- Node5
9670 function Generic_Parent_Type
9671 (N : Node_Id) return Node_Id; -- Node4
9673 function Handled_Statement_Sequence
9674 (N : Node_Id) return Node_Id; -- Node4
9676 function Handler_List_Entry
9677 (N : Node_Id) return Node_Id; -- Node2
9679 function Has_Created_Identifier
9680 (N : Node_Id) return Boolean; -- Flag15
9682 function Has_Dereference_Action
9683 (N : Node_Id) return Boolean; -- Flag13
9685 function Has_Dynamic_Length_Check
9686 (N : Node_Id) return Boolean; -- Flag10
9688 function Has_Dynamic_Range_Check
9689 (N : Node_Id) return Boolean; -- Flag12
9691 function Has_Init_Expression
9692 (N : Node_Id) return Boolean; -- Flag14
9694 function Has_Local_Raise
9695 (N : Node_Id) return Boolean; -- Flag8
9697 function Has_No_Elaboration_Code
9698 (N : Node_Id) return Boolean; -- Flag17
9700 function Has_Pragma_Suppress_All
9701 (N : Node_Id) return Boolean; -- Flag14
9703 function Has_Private_View
9704 (N : Node_Id) return Boolean; -- Flag11
9706 function Has_Relative_Deadline_Pragma
9707 (N : Node_Id) return Boolean; -- Flag9
9709 function Has_Self_Reference
9710 (N : Node_Id) return Boolean; -- Flag13
9712 function Has_SP_Choice
9713 (N : Node_Id) return Boolean; -- Flag15
9715 function Has_Storage_Size_Pragma
9716 (N : Node_Id) return Boolean; -- Flag5
9718 function Has_Target_Names
9719 (N : Node_Id) return Boolean; -- Flag8
9721 function Has_Wide_Character
9722 (N : Node_Id) return Boolean; -- Flag11
9724 function Has_Wide_Wide_Character
9725 (N : Node_Id) return Boolean; -- Flag13
9727 function Header_Size_Added
9728 (N : Node_Id) return Boolean; -- Flag11
9730 function Hidden_By_Use_Clause
9731 (N : Node_Id) return Elist_Id; -- Elist5
9734 (N : Node_Id) return Node_Id; -- Node2
9737 (N : Node_Id) return Node_Id; -- Node1
9739 function Interface_List
9740 (N : Node_Id) return List_Id; -- List2
9742 function Interface_Present
9743 (N : Node_Id) return Boolean; -- Flag16
9745 function Implicit_With
9746 (N : Node_Id) return Boolean; -- Flag16
9748 function Import_Interface_Present
9749 (N : Node_Id) return Boolean; -- Flag16
9752 (N : Node_Id) return Boolean; -- Flag15
9754 function Includes_Infinities
9755 (N : Node_Id) return Boolean; -- Flag11
9757 function Incomplete_View
9758 (N : Node_Id) return Node_Id; -- Node2
9760 function Inherited_Discriminant
9761 (N : Node_Id) return Boolean; -- Flag13
9763 function Instance_Spec
9764 (N : Node_Id) return Node_Id; -- Node5
9767 (N : Node_Id) return Uint; -- Uint3
9769 function Is_Abort_Block
9770 (N : Node_Id) return Boolean; -- Flag4
9772 function Is_Accessibility_Actual
9773 (N : Node_Id) return Boolean; -- Flag13
9775 function Is_Analyzed_Pragma
9776 (N : Node_Id) return Boolean; -- Flag5
9778 function Is_Asynchronous_Call_Block
9779 (N : Node_Id) return Boolean; -- Flag7
9781 function Is_Boolean_Aspect
9782 (N : Node_Id) return Boolean; -- Flag16
9785 (N : Node_Id) return Boolean; -- Flag11
9787 function Is_Checked_Ghost_Pragma
9788 (N : Node_Id) return Boolean; -- Flag3
9790 function Is_Component_Left_Opnd
9791 (N : Node_Id) return Boolean; -- Flag13
9793 function Is_Component_Right_Opnd
9794 (N : Node_Id) return Boolean; -- Flag14
9796 function Is_Controlling_Actual
9797 (N : Node_Id) return Boolean; -- Flag16
9799 function Is_Declaration_Level_Node
9800 (N : Node_Id) return Boolean; -- Flag5
9802 function Is_Delayed_Aspect
9803 (N : Node_Id) return Boolean; -- Flag14
9805 function Is_Disabled
9806 (N : Node_Id) return Boolean; -- Flag15
9808 function Is_Dispatching_Call
9809 (N : Node_Id) return Boolean; -- Flag6
9811 function Is_Dynamic_Coextension
9812 (N : Node_Id) return Boolean; -- Flag18
9814 function Is_Effective_Use_Clause
9815 (N : Node_Id) return Boolean; -- Flag1
9817 function Is_Elaboration_Checks_OK_Node
9818 (N : Node_Id) return Boolean; -- Flag1
9820 function Is_Elaboration_Code
9821 (N : Node_Id) return Boolean; -- Flag9
9823 function Is_Elaboration_Warnings_OK_Node
9824 (N : Node_Id) return Boolean; -- Flag3
9827 (N : Node_Id) return Boolean; -- Flag13
9829 function Is_Entry_Barrier_Function
9830 (N : Node_Id) return Boolean; -- Flag8
9832 function Is_Expanded_Build_In_Place_Call
9833 (N : Node_Id) return Boolean; -- Flag11
9835 function Is_Expanded_Contract
9836 (N : Node_Id) return Boolean; -- Flag1
9838 function Is_Finalization_Wrapper
9839 (N : Node_Id) return Boolean; -- Flag9
9841 function Is_Folded_In_Parser
9842 (N : Node_Id) return Boolean; -- Flag4
9844 function Is_Generic_Contract_Pragma
9845 (N : Node_Id) return Boolean; -- Flag2
9848 (N : Node_Id) return Boolean; -- Flag9
9850 function Is_Ignored_Ghost_Pragma
9851 (N : Node_Id) return Boolean; -- Flag8
9853 function Is_In_Discriminant_Check
9854 (N : Node_Id) return Boolean; -- Flag11
9856 function Is_Inherited_Pragma
9857 (N : Node_Id) return Boolean; -- Flag4
9859 function Is_Initialization_Block
9860 (N : Node_Id) return Boolean; -- Flag1
9862 function Is_Known_Guaranteed_ABE
9863 (N : Node_Id) return Boolean; -- Flag18
9865 function Is_Machine_Number
9866 (N : Node_Id) return Boolean; -- Flag11
9868 function Is_Null_Loop
9869 (N : Node_Id) return Boolean; -- Flag16
9871 function Is_OpenAcc_Environment
9872 (N : Node_Id) return Boolean; -- Flag13
9874 function Is_OpenAcc_Loop
9875 (N : Node_Id) return Boolean; -- Flag14
9877 function Is_Overloaded
9878 (N : Node_Id) return Boolean; -- Flag5
9880 function Is_Power_Of_2_For_Shift
9881 (N : Node_Id) return Boolean; -- Flag13
9883 function Is_Prefixed_Call
9884 (N : Node_Id) return Boolean; -- Flag17
9886 function Is_Protected_Subprogram_Body
9887 (N : Node_Id) return Boolean; -- Flag7
9889 function Is_Qualified_Universal_Literal
9890 (N : Node_Id) return Boolean; -- Flag4
9893 (N : Node_Id) return Boolean; -- Flag4
9895 function Is_Source_Call
9896 (N : Node_Id) return Boolean; -- Flag4
9898 function Is_SPARK_Mode_On_Node
9899 (N : Node_Id) return Boolean; -- Flag2
9901 function Is_Static_Coextension
9902 (N : Node_Id) return Boolean; -- Flag14
9904 function Is_Static_Expression
9905 (N : Node_Id) return Boolean; -- Flag6
9907 function Is_Subprogram_Descriptor
9908 (N : Node_Id) return Boolean; -- Flag16
9910 function Is_Task_Allocation_Block
9911 (N : Node_Id) return Boolean; -- Flag6
9913 function Is_Task_Body_Procedure
9914 (N : Node_Id) return Boolean; -- Flag1
9916 function Is_Task_Master
9917 (N : Node_Id) return Boolean; -- Flag5
9920 (N : Node_Id) return Boolean; -- Flag5
9922 function Iteration_Scheme
9923 (N : Node_Id) return Node_Id; -- Node2
9925 function Iterator_Specification
9926 (N : Node_Id) return Node_Id; -- Node2
9929 (N : Node_Id) return Entity_Id; -- Node1
9931 function Kill_Range_Check
9932 (N : Node_Id) return Boolean; -- Flag11
9934 function Label_Construct
9935 (N : Node_Id) return Node_Id; -- Node2
9938 (N : Node_Id) return Node_Id; -- Node2
9941 (N : Node_Id) return Node_Id; -- Node4
9944 (N : Node_Id) return Boolean; -- Flag6
9946 function Library_Unit
9947 (N : Node_Id) return Node_Id; -- Node4
9949 function Limited_View_Installed
9950 (N : Node_Id) return Boolean; -- Flag18
9952 function Limited_Present
9953 (N : Node_Id) return Boolean; -- Flag17
9956 (N : Node_Id) return List_Id; -- List1
9958 function Local_Raise_Not_OK
9959 (N : Node_Id) return Boolean; -- Flag7
9961 function Local_Raise_Statements
9962 (N : Node_Id) return Elist_Id; -- Elist1
9964 function Loop_Actions
9965 (N : Node_Id) return List_Id; -- List2
9967 function Loop_Parameter_Specification
9968 (N : Node_Id) return Node_Id; -- Node4
9971 (N : Node_Id) return Node_Id; -- Node1
9974 (N : Node_Id) return Node_Id; -- Node2
9977 (N : Node_Id) return Boolean; -- Flag5
9979 function Must_Be_Byte_Aligned
9980 (N : Node_Id) return Boolean; -- Flag14
9982 function Must_Not_Freeze
9983 (N : Node_Id) return Boolean; -- Flag8
9985 function Must_Not_Override
9986 (N : Node_Id) return Boolean; -- Flag15
9988 function Must_Override
9989 (N : Node_Id) return Boolean; -- Flag14
9992 (N : Node_Id) return Node_Id; -- Node2
9995 (N : Node_Id) return List_Id; -- List2
9997 function Next_Entity
9998 (N : Node_Id) return Node_Id; -- Node2
10000 function Next_Exit_Statement
10001 (N : Node_Id) return Node_Id; -- Node3
10003 function Next_Implicit_With
10004 (N : Node_Id) return Node_Id; -- Node3
10006 function Next_Named_Actual
10007 (N : Node_Id) return Node_Id; -- Node4
10009 function Next_Pragma
10010 (N : Node_Id) return Node_Id; -- Node1
10012 function Next_Rep_Item
10013 (N : Node_Id) return Node_Id; -- Node5
10015 function Next_Use_Clause
10016 (N : Node_Id) return Node_Id; -- Node3
10018 function No_Ctrl_Actions
10019 (N : Node_Id) return Boolean; -- Flag7
10021 function No_Elaboration_Check
10022 (N : Node_Id) return Boolean; -- Flag4
10024 function No_Entities_Ref_In_Spec
10025 (N : Node_Id) return Boolean; -- Flag8
10027 function No_Initialization
10028 (N : Node_Id) return Boolean; -- Flag13
10030 function No_Minimize_Eliminate
10031 (N : Node_Id) return Boolean; -- Flag17
10033 function No_Side_Effect_Removal
10034 (N : Node_Id) return Boolean; -- Flag17
10036 function No_Truncation
10037 (N : Node_Id) return Boolean; -- Flag17
10039 function Null_Excluding_Subtype
10040 (N : Node_Id) return Boolean; -- Flag16
10042 function Null_Exclusion_Present
10043 (N : Node_Id) return Boolean; -- Flag11
10045 function Null_Exclusion_In_Return_Present
10046 (N : Node_Id) return Boolean; -- Flag14
10048 function Null_Present
10049 (N : Node_Id) return Boolean; -- Flag13
10051 function Null_Record_Present
10052 (N : Node_Id) return Boolean; -- Flag17
10054 function Null_Statement
10055 (N : Node_Id) return Node_Id; -- Node2
10057 function Object_Definition
10058 (N : Node_Id) return Node_Id; -- Node4
10060 function Of_Present
10061 (N : Node_Id) return Boolean; -- Flag16
10063 function Original_Discriminant
10064 (N : Node_Id) return Node_Id; -- Node2
10066 function Original_Entity
10067 (N : Node_Id) return Entity_Id; -- Node2
10069 function Others_Discrete_Choices
10070 (N : Node_Id) return List_Id; -- List1
10072 function Out_Present
10073 (N : Node_Id) return Boolean; -- Flag17
10075 function Parameter_Associations
10076 (N : Node_Id) return List_Id; -- List3
10078 function Parameter_Specifications
10079 (N : Node_Id) return List_Id; -- List3
10081 function Parameter_Type
10082 (N : Node_Id) return Node_Id; -- Node2
10084 function Parent_Spec
10085 (N : Node_Id) return Node_Id; -- Node4
10087 function Parent_With
10088 (N : Node_Id) return Boolean; -- Flag1
10091 (N : Node_Id) return Node_Id; -- Node2
10093 function Pragma_Argument_Associations
10094 (N : Node_Id) return List_Id; -- List2
10096 function Pragma_Identifier
10097 (N : Node_Id) return Node_Id; -- Node4
10099 function Pragmas_After
10100 (N : Node_Id) return List_Id; -- List5
10102 function Pragmas_Before
10103 (N : Node_Id) return List_Id; -- List4
10105 function Pre_Post_Conditions
10106 (N : Node_Id) return Node_Id; -- Node1
10109 (N : Node_Id) return Node_Id; -- Node3
10111 function Premature_Use
10112 (N : Node_Id) return Node_Id; -- Node5
10114 function Present_Expr
10115 (N : Node_Id) return Uint; -- Uint3
10118 (N : Node_Id) return Boolean; -- Flag6
10120 function Prev_Use_Clause
10121 (N : Node_Id) return Node_Id; -- Node1
10123 function Print_In_Hex
10124 (N : Node_Id) return Boolean; -- Flag13
10126 function Private_Declarations
10127 (N : Node_Id) return List_Id; -- List3
10129 function Private_Present
10130 (N : Node_Id) return Boolean; -- Flag15
10132 function Procedure_To_Call
10133 (N : Node_Id) return Node_Id; -- Node2
10135 function Proper_Body
10136 (N : Node_Id) return Node_Id; -- Node1
10138 function Protected_Definition
10139 (N : Node_Id) return Node_Id; -- Node3
10141 function Protected_Present
10142 (N : Node_Id) return Boolean; -- Flag6
10144 function Raises_Constraint_Error
10145 (N : Node_Id) return Boolean; -- Flag7
10147 function Range_Constraint
10148 (N : Node_Id) return Node_Id; -- Node4
10150 function Range_Expression
10151 (N : Node_Id) return Node_Id; -- Node4
10153 function Real_Range_Specification
10154 (N : Node_Id) return Node_Id; -- Node4
10157 (N : Node_Id) return Ureal; -- Ureal3
10160 (N : Node_Id) return Uint; -- Uint3
10162 function Record_Extension_Part
10163 (N : Node_Id) return Node_Id; -- Node3
10165 function Redundant_Use
10166 (N : Node_Id) return Boolean; -- Flag13
10168 function Renaming_Exception
10169 (N : Node_Id) return Node_Id; -- Node2
10171 function Result_Definition
10172 (N : Node_Id) return Node_Id; -- Node4
10174 function Return_Object_Declarations
10175 (N : Node_Id) return List_Id; -- List3
10177 function Return_Statement_Entity
10178 (N : Node_Id) return Node_Id; -- Node5
10180 function Reverse_Present
10181 (N : Node_Id) return Boolean; -- Flag15
10183 function Right_Opnd
10184 (N : Node_Id) return Node_Id; -- Node3
10186 function Rounded_Result
10187 (N : Node_Id) return Boolean; -- Flag18
10189 function Save_Invocation_Graph_Of_Body
10190 (N : Node_Id) return Boolean; -- Flag1
10192 function SCIL_Controlling_Tag
10193 (N : Node_Id) return Node_Id; -- Node5
10195 function SCIL_Entity
10196 (N : Node_Id) return Node_Id; -- Node4
10198 function SCIL_Tag_Value
10199 (N : Node_Id) return Node_Id; -- Node5
10201 function SCIL_Target_Prim
10202 (N : Node_Id) return Node_Id; -- Node2
10205 (N : Node_Id) return Node_Id; -- Node3
10207 function Select_Alternatives
10208 (N : Node_Id) return List_Id; -- List1
10210 function Selector_Name
10211 (N : Node_Id) return Node_Id; -- Node2
10213 function Selector_Names
10214 (N : Node_Id) return List_Id; -- List1
10216 function Shift_Count_OK
10217 (N : Node_Id) return Boolean; -- Flag4
10219 function Source_Type
10220 (N : Node_Id) return Entity_Id; -- Node1
10222 function Specification
10223 (N : Node_Id) return Node_Id; -- Node1
10226 (N : Node_Id) return Boolean; -- Flag17
10228 function Statements
10229 (N : Node_Id) return List_Id; -- List3
10231 function Storage_Pool
10232 (N : Node_Id) return Node_Id; -- Node1
10234 function Subpool_Handle_Name
10235 (N : Node_Id) return Node_Id; -- Node4
10238 (N : Node_Id) return String_Id; -- Str3
10240 function Subtype_Indication
10241 (N : Node_Id) return Node_Id; -- Node5
10243 function Subtype_Mark
10244 (N : Node_Id) return Node_Id; -- Node4
10246 function Subtype_Marks
10247 (N : Node_Id) return List_Id; -- List2
10249 function Suppress_Assignment_Checks
10250 (N : Node_Id) return Boolean; -- Flag18
10252 function Suppress_Loop_Warnings
10253 (N : Node_Id) return Boolean; -- Flag17
10255 function Synchronized_Present
10256 (N : Node_Id) return Boolean; -- Flag7
10258 function Tagged_Present
10259 (N : Node_Id) return Boolean; -- Flag15
10262 (N : Node_Id) return Entity_Id; -- Node1
10264 function Target_Type
10265 (N : Node_Id) return Entity_Id; -- Node2
10267 function Task_Definition
10268 (N : Node_Id) return Node_Id; -- Node3
10270 function Task_Present
10271 (N : Node_Id) return Boolean; -- Flag5
10273 function Then_Actions
10274 (N : Node_Id) return List_Id; -- List2
10276 function Then_Statements
10277 (N : Node_Id) return List_Id; -- List2
10279 function Treat_Fixed_As_Integer
10280 (N : Node_Id) return Boolean; -- Flag14
10282 function Triggering_Alternative
10283 (N : Node_Id) return Node_Id; -- Node1
10285 function Triggering_Statement
10286 (N : Node_Id) return Node_Id; -- Node1
10289 (N : Node_Id) return Elist_Id; -- Elist3
10291 function Type_Definition
10292 (N : Node_Id) return Node_Id; -- Node3
10294 function Uneval_Old_Accept
10295 (N : Node_Id) return Boolean; -- Flag7
10297 function Uneval_Old_Warn
10298 (N : Node_Id) return Boolean; -- Flag18
10301 (N : Node_Id) return Node_Id; -- Node2
10303 function Unknown_Discriminants_Present
10304 (N : Node_Id) return Boolean; -- Flag13
10306 function Unreferenced_In_Spec
10307 (N : Node_Id) return Boolean; -- Flag7
10309 function Variant_Part
10310 (N : Node_Id) return Node_Id; -- Node4
10313 (N : Node_Id) return List_Id; -- List1
10315 function Visible_Declarations
10316 (N : Node_Id) return List_Id; -- List2
10318 function Uninitialized_Variable
10319 (N : Node_Id) return Node_Id; -- Node3
10321 function Used_Operations
10322 (N : Node_Id) return Elist_Id; -- Elist2
10324 function Was_Attribute_Reference
10325 (N : Node_Id) return Boolean; -- Flag2
10327 function Was_Expression_Function
10328 (N : Node_Id) return Boolean; -- Flag18
10330 function Was_Originally_Stub
10331 (N : Node_Id) return Boolean; -- Flag13
10333 -- End functions (note used by xsinfo utility program to end processing)
10335 ----------------------------
10336 -- Node Update Procedures --
10337 ----------------------------
10339 -- These are the corresponding node update routines, which again provide
10340 -- a high level logical access with type checking. In addition to setting
10341 -- the indicated field of the node N to the given Val, in the case of
10342 -- tree pointers (List1-4), the parent pointer of the Val node is set to
10343 -- point back to node N. This automates the setting of the parent pointer.
10345 procedure Set_Abort_Present
10346 (N : Node_Id; Val : Boolean := True); -- Flag15
10348 procedure Set_Abortable_Part
10349 (N : Node_Id; Val : Node_Id); -- Node2
10351 procedure Set_Abstract_Present
10352 (N : Node_Id; Val : Boolean := True); -- Flag4
10354 procedure Set_Accept_Handler_Records
10355 (N : Node_Id; Val : List_Id); -- List5
10357 procedure Set_Accept_Statement
10358 (N : Node_Id; Val : Node_Id); -- Node2
10360 procedure Set_Access_Definition
10361 (N : Node_Id; Val : Node_Id); -- Node3
10363 procedure Set_Access_To_Subprogram_Definition
10364 (N : Node_Id; Val : Node_Id); -- Node3
10366 procedure Set_Access_Types_To_Process
10367 (N : Node_Id; Val : Elist_Id); -- Elist2
10369 procedure Set_Actions
10370 (N : Node_Id; Val : List_Id); -- List1
10372 procedure Set_Activation_Chain_Entity
10373 (N : Node_Id; Val : Node_Id); -- Node3
10375 procedure Set_Acts_As_Spec
10376 (N : Node_Id; Val : Boolean := True); -- Flag4
10378 procedure Set_Actual_Designated_Subtype
10379 (N : Node_Id; Val : Node_Id); -- Node4
10381 procedure Set_Address_Warning_Posted
10382 (N : Node_Id; Val : Boolean := True); -- Flag18
10384 procedure Set_Aggregate_Bounds
10385 (N : Node_Id; Val : Node_Id); -- Node3
10387 procedure Set_Aliased_Present
10388 (N : Node_Id; Val : Boolean := True); -- Flag4
10390 procedure Set_Alloc_For_BIP_Return
10391 (N : Node_Id; Val : Boolean := True); -- Flag1
10393 procedure Set_All_Others
10394 (N : Node_Id; Val : Boolean := True); -- Flag11
10396 procedure Set_All_Present
10397 (N : Node_Id; Val : Boolean := True); -- Flag15
10399 procedure Set_Alternatives
10400 (N : Node_Id; Val : List_Id); -- List4
10402 procedure Set_Ancestor_Part
10403 (N : Node_Id; Val : Node_Id); -- Node3
10405 procedure Set_Atomic_Sync_Required
10406 (N : Node_Id; Val : Boolean := True); -- Flag14
10408 procedure Set_Array_Aggregate
10409 (N : Node_Id; Val : Node_Id); -- Node3
10411 procedure Set_Aspect_Rep_Item
10412 (N : Node_Id; Val : Node_Id); -- Node2
10414 procedure Set_Assignment_OK
10415 (N : Node_Id; Val : Boolean := True); -- Flag15
10417 procedure Set_Associated_Node
10418 (N : Node_Id; Val : Node_Id); -- Node4
10420 procedure Set_Attribute_Name
10421 (N : Node_Id; Val : Name_Id); -- Name2
10423 procedure Set_At_End_Proc
10424 (N : Node_Id; Val : Node_Id); -- Node1
10426 procedure Set_Aux_Decls_Node
10427 (N : Node_Id; Val : Node_Id); -- Node5
10429 procedure Set_Backwards_OK
10430 (N : Node_Id; Val : Boolean := True); -- Flag6
10432 procedure Set_Bad_Is_Detected
10433 (N : Node_Id; Val : Boolean := True); -- Flag15
10435 procedure Set_Body_Required
10436 (N : Node_Id; Val : Boolean := True); -- Flag13
10438 procedure Set_Body_To_Inline
10439 (N : Node_Id; Val : Node_Id); -- Node3
10441 procedure Set_Box_Present
10442 (N : Node_Id; Val : Boolean := True); -- Flag15
10444 procedure Set_By_Ref
10445 (N : Node_Id; Val : Boolean := True); -- Flag5
10447 procedure Set_Char_Literal_Value
10448 (N : Node_Id; Val : Uint); -- Uint2
10450 procedure Set_Chars
10451 (N : Node_Id; Val : Name_Id); -- Name1
10453 procedure Set_Check_Address_Alignment
10454 (N : Node_Id; Val : Boolean := True); -- Flag11
10456 procedure Set_Choice_Parameter
10457 (N : Node_Id; Val : Node_Id); -- Node2
10459 procedure Set_Choices
10460 (N : Node_Id; Val : List_Id); -- List1
10462 procedure Set_Class_Present
10463 (N : Node_Id; Val : Boolean := True); -- Flag6
10465 procedure Set_Classifications
10466 (N : Node_Id; Val : Node_Id); -- Node3
10468 procedure Set_Cleanup_Actions
10469 (N : Node_Id; Val : List_Id); -- List5
10471 procedure Set_Comes_From_Extended_Return_Statement
10472 (N : Node_Id; Val : Boolean := True); -- Flag18
10474 procedure Set_Compile_Time_Known_Aggregate
10475 (N : Node_Id; Val : Boolean := True); -- Flag18
10477 procedure Set_Component_Associations
10478 (N : Node_Id; Val : List_Id); -- List2
10480 procedure Set_Component_Clauses
10481 (N : Node_Id; Val : List_Id); -- List3
10483 procedure Set_Component_Definition
10484 (N : Node_Id; Val : Node_Id); -- Node4
10486 procedure Set_Component_Items
10487 (N : Node_Id; Val : List_Id); -- List3
10489 procedure Set_Component_List
10490 (N : Node_Id; Val : Node_Id); -- Node1
10492 procedure Set_Component_Name
10493 (N : Node_Id; Val : Node_Id); -- Node1
10495 procedure Set_Componentwise_Assignment
10496 (N : Node_Id; Val : Boolean := True); -- Flag14
10498 procedure Set_Condition
10499 (N : Node_Id; Val : Node_Id); -- Node1
10501 procedure Set_Condition_Actions
10502 (N : Node_Id; Val : List_Id); -- List3
10504 procedure Set_Config_Pragmas
10505 (N : Node_Id; Val : List_Id); -- List4
10507 procedure Set_Constant_Present
10508 (N : Node_Id; Val : Boolean := True); -- Flag17
10510 procedure Set_Constraint
10511 (N : Node_Id; Val : Node_Id); -- Node3
10513 procedure Set_Constraints
10514 (N : Node_Id; Val : List_Id); -- List1
10516 procedure Set_Context_Installed
10517 (N : Node_Id; Val : Boolean := True); -- Flag13
10519 procedure Set_Context_Items
10520 (N : Node_Id; Val : List_Id); -- List1
10522 procedure Set_Context_Pending
10523 (N : Node_Id; Val : Boolean := True); -- Flag16
10525 procedure Set_Contract_Test_Cases
10526 (N : Node_Id; Val : Node_Id); -- Node2
10528 procedure Set_Controlling_Argument
10529 (N : Node_Id; Val : Node_Id); -- Node1
10531 procedure Set_Conversion_OK
10532 (N : Node_Id; Val : Boolean := True); -- Flag14
10534 procedure Set_Convert_To_Return_False
10535 (N : Node_Id; Val : Boolean := True); -- Flag13
10537 procedure Set_Corresponding_Aspect
10538 (N : Node_Id; Val : Node_Id); -- Node3
10540 procedure Set_Corresponding_Body
10541 (N : Node_Id; Val : Node_Id); -- Node5
10543 procedure Set_Corresponding_Formal_Spec
10544 (N : Node_Id; Val : Node_Id); -- Node3
10546 procedure Set_Corresponding_Generic_Association
10547 (N : Node_Id; Val : Node_Id); -- Node5
10549 procedure Set_Corresponding_Integer_Value
10550 (N : Node_Id; Val : Uint); -- Uint4
10552 procedure Set_Corresponding_Spec
10553 (N : Node_Id; Val : Entity_Id); -- Node5
10555 procedure Set_Corresponding_Spec_Of_Stub
10556 (N : Node_Id; Val : Node_Id); -- Node2
10558 procedure Set_Corresponding_Stub
10559 (N : Node_Id; Val : Node_Id); -- Node3
10561 procedure Set_Dcheck_Function
10562 (N : Node_Id; Val : Entity_Id); -- Node5
10564 procedure Set_Declarations
10565 (N : Node_Id; Val : List_Id); -- List2
10567 procedure Set_Default_Expression
10568 (N : Node_Id; Val : Node_Id); -- Node5
10570 procedure Set_Default_Storage_Pool
10571 (N : Node_Id; Val : Node_Id); -- Node3
10573 procedure Set_Default_Name
10574 (N : Node_Id; Val : Node_Id); -- Node2
10576 procedure Set_Defining_Identifier
10577 (N : Node_Id; Val : Entity_Id); -- Node1
10579 procedure Set_Defining_Unit_Name
10580 (N : Node_Id; Val : Node_Id); -- Node1
10582 procedure Set_Delay_Alternative
10583 (N : Node_Id; Val : Node_Id); -- Node4
10585 procedure Set_Delay_Statement
10586 (N : Node_Id; Val : Node_Id); -- Node2
10588 procedure Set_Delta_Expression
10589 (N : Node_Id; Val : Node_Id); -- Node3
10591 procedure Set_Digits_Expression
10592 (N : Node_Id; Val : Node_Id); -- Node2
10594 procedure Set_Discr_Check_Funcs_Built
10595 (N : Node_Id; Val : Boolean := True); -- Flag11
10597 procedure Set_Discrete_Choices
10598 (N : Node_Id; Val : List_Id); -- List4
10600 procedure Set_Discrete_Range
10601 (N : Node_Id; Val : Node_Id); -- Node4
10603 procedure Set_Discrete_Subtype_Definition
10604 (N : Node_Id; Val : Node_Id); -- Node4
10606 procedure Set_Discrete_Subtype_Definitions
10607 (N : Node_Id; Val : List_Id); -- List2
10609 procedure Set_Discriminant_Specifications
10610 (N : Node_Id; Val : List_Id); -- List4
10612 procedure Set_Discriminant_Type
10613 (N : Node_Id; Val : Node_Id); -- Node5
10615 procedure Set_Do_Accessibility_Check
10616 (N : Node_Id; Val : Boolean := True); -- Flag13
10618 procedure Set_Do_Discriminant_Check
10619 (N : Node_Id; Val : Boolean := True); -- Flag3
10621 procedure Set_Do_Division_Check
10622 (N : Node_Id; Val : Boolean := True); -- Flag13
10624 procedure Set_Do_Length_Check
10625 (N : Node_Id; Val : Boolean := True); -- Flag4
10627 procedure Set_Do_Overflow_Check
10628 (N : Node_Id; Val : Boolean := True); -- Flag17
10630 procedure Set_Do_Range_Check
10631 (N : Node_Id; Val : Boolean := True); -- Flag9
10633 procedure Set_Do_Storage_Check
10634 (N : Node_Id; Val : Boolean := True); -- Flag17
10636 procedure Set_Do_Tag_Check
10637 (N : Node_Id; Val : Boolean := True); -- Flag13
10639 procedure Set_Elaborate_All_Desirable
10640 (N : Node_Id; Val : Boolean := True); -- Flag9
10642 procedure Set_Elaborate_All_Present
10643 (N : Node_Id; Val : Boolean := True); -- Flag14
10645 procedure Set_Elaborate_Desirable
10646 (N : Node_Id; Val : Boolean := True); -- Flag11
10648 procedure Set_Elaborate_Present
10649 (N : Node_Id; Val : Boolean := True); -- Flag4
10651 procedure Set_Else_Actions
10652 (N : Node_Id; Val : List_Id); -- List3
10654 procedure Set_Else_Statements
10655 (N : Node_Id; Val : List_Id); -- List4
10657 procedure Set_Elsif_Parts
10658 (N : Node_Id; Val : List_Id); -- List3
10660 procedure Set_Enclosing_Variant
10661 (N : Node_Id; Val : Node_Id); -- Node2
10663 procedure Set_End_Label
10664 (N : Node_Id; Val : Node_Id); -- Node4
10666 procedure Set_End_Span
10667 (N : Node_Id; Val : Uint); -- Uint5
10669 procedure Set_Entity
10670 (N : Node_Id; Val : Node_Id); -- Node4
10672 procedure Set_Entry_Body_Formal_Part
10673 (N : Node_Id; Val : Node_Id); -- Node5
10675 procedure Set_Entry_Call_Alternative
10676 (N : Node_Id; Val : Node_Id); -- Node1
10678 procedure Set_Entry_Call_Statement
10679 (N : Node_Id; Val : Node_Id); -- Node1
10681 procedure Set_Entry_Direct_Name
10682 (N : Node_Id; Val : Node_Id); -- Node1
10684 procedure Set_Entry_Index
10685 (N : Node_Id; Val : Node_Id); -- Node5
10687 procedure Set_Entry_Index_Specification
10688 (N : Node_Id; Val : Node_Id); -- Node4
10690 procedure Set_Etype
10691 (N : Node_Id; Val : Node_Id); -- Node5
10693 procedure Set_Exception_Choices
10694 (N : Node_Id; Val : List_Id); -- List4
10696 procedure Set_Exception_Handlers
10697 (N : Node_Id; Val : List_Id); -- List5
10699 procedure Set_Exception_Junk
10700 (N : Node_Id; Val : Boolean := True); -- Flag8
10702 procedure Set_Exception_Label
10703 (N : Node_Id; Val : Node_Id); -- Node5
10705 procedure Set_Expansion_Delayed
10706 (N : Node_Id; Val : Boolean := True); -- Flag11
10708 procedure Set_Explicit_Actual_Parameter
10709 (N : Node_Id; Val : Node_Id); -- Node3
10711 procedure Set_Explicit_Generic_Actual_Parameter
10712 (N : Node_Id; Val : Node_Id); -- Node1
10714 procedure Set_Expression
10715 (N : Node_Id; Val : Node_Id); -- Node3
10717 procedure Set_Expression_Copy
10718 (N : Node_Id; Val : Node_Id); -- Node2
10720 procedure Set_Expressions
10721 (N : Node_Id; Val : List_Id); -- List1
10723 procedure Set_First_Bit
10724 (N : Node_Id; Val : Node_Id); -- Node3
10726 procedure Set_First_Inlined_Subprogram
10727 (N : Node_Id; Val : Entity_Id); -- Node3
10729 procedure Set_First_Name
10730 (N : Node_Id; Val : Boolean := True); -- Flag5
10732 procedure Set_First_Named_Actual
10733 (N : Node_Id; Val : Node_Id); -- Node4
10735 procedure Set_First_Real_Statement
10736 (N : Node_Id; Val : Node_Id); -- Node2
10738 procedure Set_First_Subtype_Link
10739 (N : Node_Id; Val : Entity_Id); -- Node5
10741 procedure Set_Float_Truncate
10742 (N : Node_Id; Val : Boolean := True); -- Flag11
10744 procedure Set_Formal_Type_Definition
10745 (N : Node_Id; Val : Node_Id); -- Node3
10747 procedure Set_Forwards_OK
10748 (N : Node_Id; Val : Boolean := True); -- Flag5
10750 procedure Set_From_Aspect_Specification
10751 (N : Node_Id; Val : Boolean := True); -- Flag13
10753 procedure Set_From_At_End
10754 (N : Node_Id; Val : Boolean := True); -- Flag4
10756 procedure Set_From_At_Mod
10757 (N : Node_Id; Val : Boolean := True); -- Flag4
10759 procedure Set_From_Conditional_Expression
10760 (N : Node_Id; Val : Boolean := True); -- Flag1
10762 procedure Set_From_Default
10763 (N : Node_Id; Val : Boolean := True); -- Flag6
10765 procedure Set_Generalized_Indexing
10766 (N : Node_Id; Val : Node_Id); -- Node4
10768 procedure Set_Generic_Associations
10769 (N : Node_Id; Val : List_Id); -- List3
10771 procedure Set_Generic_Formal_Declarations
10772 (N : Node_Id; Val : List_Id); -- List2
10774 procedure Set_Generic_Parent
10775 (N : Node_Id; Val : Node_Id); -- Node5
10777 procedure Set_Generic_Parent_Type
10778 (N : Node_Id; Val : Node_Id); -- Node4
10780 procedure Set_Handled_Statement_Sequence
10781 (N : Node_Id; Val : Node_Id); -- Node4
10783 procedure Set_Handler_List_Entry
10784 (N : Node_Id; Val : Node_Id); -- Node2
10786 procedure Set_Has_Created_Identifier
10787 (N : Node_Id; Val : Boolean := True); -- Flag15
10789 procedure Set_Has_Dereference_Action
10790 (N : Node_Id; Val : Boolean := True); -- Flag13
10792 procedure Set_Has_Dynamic_Length_Check
10793 (N : Node_Id; Val : Boolean := True); -- Flag10
10795 procedure Set_Has_Dynamic_Range_Check
10796 (N : Node_Id; Val : Boolean := True); -- Flag12
10798 procedure Set_Has_Init_Expression
10799 (N : Node_Id; Val : Boolean := True); -- Flag14
10801 procedure Set_Has_Local_Raise
10802 (N : Node_Id; Val : Boolean := True); -- Flag8
10804 procedure Set_Has_No_Elaboration_Code
10805 (N : Node_Id; Val : Boolean := True); -- Flag17
10807 procedure Set_Has_Pragma_Suppress_All
10808 (N : Node_Id; Val : Boolean := True); -- Flag14
10810 procedure Set_Has_Private_View
10811 (N : Node_Id; Val : Boolean := True); -- Flag11
10813 procedure Set_Has_Relative_Deadline_Pragma
10814 (N : Node_Id; Val : Boolean := True); -- Flag9
10816 procedure Set_Has_Self_Reference
10817 (N : Node_Id; Val : Boolean := True); -- Flag13
10819 procedure Set_Has_SP_Choice
10820 (N : Node_Id; Val : Boolean := True); -- Flag15
10822 procedure Set_Has_Storage_Size_Pragma
10823 (N : Node_Id; Val : Boolean := True); -- Flag5
10825 procedure Set_Has_Target_Names
10826 (N : Node_Id; Val : Boolean := True); -- Flag8
10828 procedure Set_Has_Wide_Character
10829 (N : Node_Id; Val : Boolean := True); -- Flag11
10831 procedure Set_Has_Wide_Wide_Character
10832 (N : Node_Id; Val : Boolean := True); -- Flag13
10834 procedure Set_Header_Size_Added
10835 (N : Node_Id; Val : Boolean := True); -- Flag11
10837 procedure Set_Hidden_By_Use_Clause
10838 (N : Node_Id; Val : Elist_Id); -- Elist5
10840 procedure Set_High_Bound
10841 (N : Node_Id; Val : Node_Id); -- Node2
10843 procedure Set_Identifier
10844 (N : Node_Id; Val : Node_Id); -- Node1
10846 procedure Set_Interface_List
10847 (N : Node_Id; Val : List_Id); -- List2
10849 procedure Set_Interface_Present
10850 (N : Node_Id; Val : Boolean := True); -- Flag16
10852 procedure Set_Implicit_With
10853 (N : Node_Id; Val : Boolean := True); -- Flag16
10855 procedure Set_Import_Interface_Present
10856 (N : Node_Id; Val : Boolean := True); -- Flag16
10858 procedure Set_In_Present
10859 (N : Node_Id; Val : Boolean := True); -- Flag15
10861 procedure Set_Includes_Infinities
10862 (N : Node_Id; Val : Boolean := True); -- Flag11
10864 procedure Set_Incomplete_View
10865 (N : Node_Id; Val : Node_Id); -- Node2
10867 procedure Set_Inherited_Discriminant
10868 (N : Node_Id; Val : Boolean := True); -- Flag13
10870 procedure Set_Instance_Spec
10871 (N : Node_Id; Val : Node_Id); -- Node5
10873 procedure Set_Intval
10874 (N : Node_Id; Val : Uint); -- Uint3
10876 procedure Set_Is_Abort_Block
10877 (N : Node_Id; Val : Boolean := True); -- Flag4
10879 procedure Set_Is_Accessibility_Actual
10880 (N : Node_Id; Val : Boolean := True); -- Flag13
10882 procedure Set_Is_Analyzed_Pragma
10883 (N : Node_Id; Val : Boolean := True); -- Flag5
10885 procedure Set_Is_Asynchronous_Call_Block
10886 (N : Node_Id; Val : Boolean := True); -- Flag7
10888 procedure Set_Is_Boolean_Aspect
10889 (N : Node_Id; Val : Boolean := True); -- Flag16
10891 procedure Set_Is_Checked
10892 (N : Node_Id; Val : Boolean := True); -- Flag11
10894 procedure Set_Is_Checked_Ghost_Pragma
10895 (N : Node_Id; Val : Boolean := True); -- Flag3
10897 procedure Set_Is_Component_Left_Opnd
10898 (N : Node_Id; Val : Boolean := True); -- Flag13
10900 procedure Set_Is_Component_Right_Opnd
10901 (N : Node_Id; Val : Boolean := True); -- Flag14
10903 procedure Set_Is_Controlling_Actual
10904 (N : Node_Id; Val : Boolean := True); -- Flag16
10906 procedure Set_Is_Declaration_Level_Node
10907 (N : Node_Id; Val : Boolean := True); -- Flag5
10909 procedure Set_Is_Delayed_Aspect
10910 (N : Node_Id; Val : Boolean := True); -- Flag14
10912 procedure Set_Is_Disabled
10913 (N : Node_Id; Val : Boolean := True); -- Flag15
10915 procedure Set_Is_Dispatching_Call
10916 (N : Node_Id; Val : Boolean := True); -- Flag6
10918 procedure Set_Is_Dynamic_Coextension
10919 (N : Node_Id; Val : Boolean := True); -- Flag18
10921 procedure Set_Is_Effective_Use_Clause
10922 (N : Node_Id; Val : Boolean := True); -- Flag1
10924 procedure Set_Is_Elaboration_Checks_OK_Node
10925 (N : Node_Id; Val : Boolean := True); -- Flag1
10927 procedure Set_Is_Elaboration_Code
10928 (N : Node_Id; Val : Boolean := True); -- Flag9
10930 procedure Set_Is_Elaboration_Warnings_OK_Node
10931 (N : Node_Id; Val : Boolean := True); -- Flag3
10933 procedure Set_Is_Elsif
10934 (N : Node_Id; Val : Boolean := True); -- Flag13
10936 procedure Set_Is_Entry_Barrier_Function
10937 (N : Node_Id; Val : Boolean := True); -- Flag8
10939 procedure Set_Is_Expanded_Build_In_Place_Call
10940 (N : Node_Id; Val : Boolean := True); -- Flag11
10942 procedure Set_Is_Expanded_Contract
10943 (N : Node_Id; Val : Boolean := True); -- Flag1
10945 procedure Set_Is_Finalization_Wrapper
10946 (N : Node_Id; Val : Boolean := True); -- Flag9
10948 procedure Set_Is_Folded_In_Parser
10949 (N : Node_Id; Val : Boolean := True); -- Flag4
10951 procedure Set_Is_Generic_Contract_Pragma
10952 (N : Node_Id; Val : Boolean := True); -- Flag2
10954 procedure Set_Is_Ignored
10955 (N : Node_Id; Val : Boolean := True); -- Flag9
10957 procedure Set_Is_Ignored_Ghost_Pragma
10958 (N : Node_Id; Val : Boolean := True); -- Flag8
10960 procedure Set_Is_In_Discriminant_Check
10961 (N : Node_Id; Val : Boolean := True); -- Flag11
10963 procedure Set_Is_Inherited_Pragma
10964 (N : Node_Id; Val : Boolean := True); -- Flag4
10966 procedure Set_Is_Initialization_Block
10967 (N : Node_Id; Val : Boolean := True); -- Flag1
10969 procedure Set_Is_Known_Guaranteed_ABE
10970 (N : Node_Id; Val : Boolean := True); -- Flag18
10972 procedure Set_Is_Machine_Number
10973 (N : Node_Id; Val : Boolean := True); -- Flag11
10975 procedure Set_Is_Null_Loop
10976 (N : Node_Id; Val : Boolean := True); -- Flag16
10978 procedure Set_Is_OpenAcc_Environment
10979 (N : Node_Id; Val : Boolean := True); -- Flag13
10981 procedure Set_Is_OpenAcc_Loop
10982 (N : Node_Id; Val : Boolean := True); -- Flag14
10984 procedure Set_Is_Overloaded
10985 (N : Node_Id; Val : Boolean := True); -- Flag5
10987 procedure Set_Is_Power_Of_2_For_Shift
10988 (N : Node_Id; Val : Boolean := True); -- Flag13
10990 procedure Set_Is_Prefixed_Call
10991 (N : Node_Id; Val : Boolean := True); -- Flag17
10993 procedure Set_Is_Protected_Subprogram_Body
10994 (N : Node_Id; Val : Boolean := True); -- Flag7
10996 procedure Set_Is_Qualified_Universal_Literal
10997 (N : Node_Id; Val : Boolean := True); -- Flag4
10999 procedure Set_Is_Read
11000 (N : Node_Id; Val : Boolean := True); -- Flag4
11002 procedure Set_Is_Source_Call
11003 (N : Node_Id; Val : Boolean := True); -- Flag4
11005 procedure Set_Is_SPARK_Mode_On_Node
11006 (N : Node_Id; Val : Boolean := True); -- Flag2
11008 procedure Set_Is_Static_Coextension
11009 (N : Node_Id; Val : Boolean := True); -- Flag14
11011 procedure Set_Is_Static_Expression
11012 (N : Node_Id; Val : Boolean := True); -- Flag6
11014 procedure Set_Is_Subprogram_Descriptor
11015 (N : Node_Id; Val : Boolean := True); -- Flag16
11017 procedure Set_Is_Task_Allocation_Block
11018 (N : Node_Id; Val : Boolean := True); -- Flag6
11020 procedure Set_Is_Task_Body_Procedure
11021 (N : Node_Id; Val : Boolean := True); -- Flag1
11023 procedure Set_Is_Task_Master
11024 (N : Node_Id; Val : Boolean := True); -- Flag5
11026 procedure Set_Is_Write
11027 (N : Node_Id; Val : Boolean := True); -- Flag5
11029 procedure Set_Iteration_Scheme
11030 (N : Node_Id; Val : Node_Id); -- Node2
11032 procedure Set_Iterator_Specification
11033 (N : Node_Id; Val : Node_Id); -- Node2
11035 procedure Set_Itype
11036 (N : Node_Id; Val : Entity_Id); -- Node1
11038 procedure Set_Kill_Range_Check
11039 (N : Node_Id; Val : Boolean := True); -- Flag11
11041 procedure Set_Last_Bit
11042 (N : Node_Id; Val : Node_Id); -- Node4
11044 procedure Set_Last_Name
11045 (N : Node_Id; Val : Boolean := True); -- Flag6
11047 procedure Set_Library_Unit
11048 (N : Node_Id; Val : Node_Id); -- Node4
11050 procedure Set_Label_Construct
11051 (N : Node_Id; Val : Node_Id); -- Node2
11053 procedure Set_Left_Opnd
11054 (N : Node_Id; Val : Node_Id); -- Node2
11056 procedure Set_Limited_View_Installed
11057 (N : Node_Id; Val : Boolean := True); -- Flag18
11059 procedure Set_Limited_Present
11060 (N : Node_Id; Val : Boolean := True); -- Flag17
11062 procedure Set_Literals
11063 (N : Node_Id; Val : List_Id); -- List1
11065 procedure Set_Local_Raise_Not_OK
11066 (N : Node_Id; Val : Boolean := True); -- Flag7
11068 procedure Set_Local_Raise_Statements
11069 (N : Node_Id; Val : Elist_Id); -- Elist1
11071 procedure Set_Loop_Actions
11072 (N : Node_Id; Val : List_Id); -- List2
11074 procedure Set_Loop_Parameter_Specification
11075 (N : Node_Id; Val : Node_Id); -- Node4
11077 procedure Set_Low_Bound
11078 (N : Node_Id; Val : Node_Id); -- Node1
11080 procedure Set_Mod_Clause
11081 (N : Node_Id; Val : Node_Id); -- Node2
11083 procedure Set_More_Ids
11084 (N : Node_Id; Val : Boolean := True); -- Flag5
11086 procedure Set_Must_Be_Byte_Aligned
11087 (N : Node_Id; Val : Boolean := True); -- Flag14
11089 procedure Set_Must_Not_Freeze
11090 (N : Node_Id; Val : Boolean := True); -- Flag8
11092 procedure Set_Must_Not_Override
11093 (N : Node_Id; Val : Boolean := True); -- Flag15
11095 procedure Set_Must_Override
11096 (N : Node_Id; Val : Boolean := True); -- Flag14
11099 (N : Node_Id; Val : Node_Id); -- Node2
11101 procedure Set_Names
11102 (N : Node_Id; Val : List_Id); -- List2
11104 procedure Set_Next_Entity
11105 (N : Node_Id; Val : Node_Id); -- Node2
11107 procedure Set_Next_Exit_Statement
11108 (N : Node_Id; Val : Node_Id); -- Node3
11110 procedure Set_Next_Implicit_With
11111 (N : Node_Id; Val : Node_Id); -- Node3
11113 procedure Set_Next_Named_Actual
11114 (N : Node_Id; Val : Node_Id); -- Node4
11116 procedure Set_Next_Pragma
11117 (N : Node_Id; Val : Node_Id); -- Node1
11119 procedure Set_Next_Rep_Item
11120 (N : Node_Id; Val : Node_Id); -- Node5
11122 procedure Set_Next_Use_Clause
11123 (N : Node_Id; Val : Node_Id); -- Node3
11125 procedure Set_No_Ctrl_Actions
11126 (N : Node_Id; Val : Boolean := True); -- Flag7
11128 procedure Set_No_Elaboration_Check
11129 (N : Node_Id; Val : Boolean := True); -- Flag4
11131 procedure Set_No_Entities_Ref_In_Spec
11132 (N : Node_Id; Val : Boolean := True); -- Flag8
11134 procedure Set_No_Initialization
11135 (N : Node_Id; Val : Boolean := True); -- Flag13
11137 procedure Set_No_Minimize_Eliminate
11138 (N : Node_Id; Val : Boolean := True); -- Flag17
11140 procedure Set_No_Side_Effect_Removal
11141 (N : Node_Id; Val : Boolean := True); -- Flag17
11143 procedure Set_No_Truncation
11144 (N : Node_Id; Val : Boolean := True); -- Flag17
11146 procedure Set_Null_Excluding_Subtype
11147 (N : Node_Id; Val : Boolean := True); -- Flag16
11149 procedure Set_Null_Exclusion_Present
11150 (N : Node_Id; Val : Boolean := True); -- Flag11
11152 procedure Set_Null_Exclusion_In_Return_Present
11153 (N : Node_Id; Val : Boolean := True); -- Flag14
11155 procedure Set_Null_Present
11156 (N : Node_Id; Val : Boolean := True); -- Flag13
11158 procedure Set_Null_Record_Present
11159 (N : Node_Id; Val : Boolean := True); -- Flag17
11161 procedure Set_Null_Statement
11162 (N : Node_Id; Val : Node_Id); -- Node2
11164 procedure Set_Object_Definition
11165 (N : Node_Id; Val : Node_Id); -- Node4
11167 procedure Set_Of_Present
11168 (N : Node_Id; Val : Boolean := True); -- Flag16
11170 procedure Set_Original_Discriminant
11171 (N : Node_Id; Val : Node_Id); -- Node2
11173 procedure Set_Original_Entity
11174 (N : Node_Id; Val : Entity_Id); -- Node2
11176 procedure Set_Others_Discrete_Choices
11177 (N : Node_Id; Val : List_Id); -- List1
11179 procedure Set_Out_Present
11180 (N : Node_Id; Val : Boolean := True); -- Flag17
11182 procedure Set_Parameter_Associations
11183 (N : Node_Id; Val : List_Id); -- List3
11185 procedure Set_Parameter_Specifications
11186 (N : Node_Id; Val : List_Id); -- List3
11188 procedure Set_Parameter_Type
11189 (N : Node_Id; Val : Node_Id); -- Node2
11191 procedure Set_Parent_Spec
11192 (N : Node_Id; Val : Node_Id); -- Node4
11194 procedure Set_Parent_With
11195 (N : Node_Id; Val : Boolean := True); -- Flag1
11197 procedure Set_Position
11198 (N : Node_Id; Val : Node_Id); -- Node2
11200 procedure Set_Pragma_Argument_Associations
11201 (N : Node_Id; Val : List_Id); -- List2
11203 procedure Set_Pragma_Identifier
11204 (N : Node_Id; Val : Node_Id); -- Node4
11206 procedure Set_Pragmas_After
11207 (N : Node_Id; Val : List_Id); -- List5
11209 procedure Set_Pragmas_Before
11210 (N : Node_Id; Val : List_Id); -- List4
11212 procedure Set_Pre_Post_Conditions
11213 (N : Node_Id; Val : Node_Id); -- Node1
11215 procedure Set_Prefix
11216 (N : Node_Id; Val : Node_Id); -- Node3
11218 procedure Set_Premature_Use
11219 (N : Node_Id; Val : Node_Id); -- Node5
11221 procedure Set_Present_Expr
11222 (N : Node_Id; Val : Uint); -- Uint3
11224 procedure Set_Prev_Ids
11225 (N : Node_Id; Val : Boolean := True); -- Flag6
11227 procedure Set_Prev_Use_Clause
11228 (N : Node_Id; Val : Node_Id); -- Node1
11230 procedure Set_Print_In_Hex
11231 (N : Node_Id; Val : Boolean := True); -- Flag13
11233 procedure Set_Private_Declarations
11234 (N : Node_Id; Val : List_Id); -- List3
11236 procedure Set_Private_Present
11237 (N : Node_Id; Val : Boolean := True); -- Flag15
11239 procedure Set_Procedure_To_Call
11240 (N : Node_Id; Val : Node_Id); -- Node2
11242 procedure Set_Proper_Body
11243 (N : Node_Id; Val : Node_Id); -- Node1
11245 procedure Set_Protected_Definition
11246 (N : Node_Id; Val : Node_Id); -- Node3
11248 procedure Set_Protected_Present
11249 (N : Node_Id; Val : Boolean := True); -- Flag6
11251 procedure Set_Raises_Constraint_Error
11252 (N : Node_Id; Val : Boolean := True); -- Flag7
11254 procedure Set_Range_Constraint
11255 (N : Node_Id; Val : Node_Id); -- Node4
11257 procedure Set_Range_Expression
11258 (N : Node_Id; Val : Node_Id); -- Node4
11260 procedure Set_Real_Range_Specification
11261 (N : Node_Id; Val : Node_Id); -- Node4
11263 procedure Set_Realval
11264 (N : Node_Id; Val : Ureal); -- Ureal3
11266 procedure Set_Reason
11267 (N : Node_Id; Val : Uint); -- Uint3
11269 procedure Set_Record_Extension_Part
11270 (N : Node_Id; Val : Node_Id); -- Node3
11272 procedure Set_Redundant_Use
11273 (N : Node_Id; Val : Boolean := True); -- Flag13
11275 procedure Set_Renaming_Exception
11276 (N : Node_Id; Val : Node_Id); -- Node2
11278 procedure Set_Result_Definition
11279 (N : Node_Id; Val : Node_Id); -- Node4
11281 procedure Set_Return_Object_Declarations
11282 (N : Node_Id; Val : List_Id); -- List3
11284 procedure Set_Return_Statement_Entity
11285 (N : Node_Id; Val : Node_Id); -- Node5
11287 procedure Set_Reverse_Present
11288 (N : Node_Id; Val : Boolean := True); -- Flag15
11290 procedure Set_Right_Opnd
11291 (N : Node_Id; Val : Node_Id); -- Node3
11293 procedure Set_Rounded_Result
11294 (N : Node_Id; Val : Boolean := True); -- Flag18
11296 procedure Set_Save_Invocation_Graph_Of_Body
11297 (N : Node_Id; Val : Boolean := True); -- Flag1
11299 procedure Set_SCIL_Controlling_Tag
11300 (N : Node_Id; Val : Node_Id); -- Node5
11302 procedure Set_SCIL_Entity
11303 (N : Node_Id; Val : Node_Id); -- Node4
11305 procedure Set_SCIL_Tag_Value
11306 (N : Node_Id; Val : Node_Id); -- Node5
11308 procedure Set_SCIL_Target_Prim
11309 (N : Node_Id; Val : Node_Id); -- Node2
11311 procedure Set_Scope
11312 (N : Node_Id; Val : Node_Id); -- Node3
11314 procedure Set_Select_Alternatives
11315 (N : Node_Id; Val : List_Id); -- List1
11317 procedure Set_Selector_Name
11318 (N : Node_Id; Val : Node_Id); -- Node2
11320 procedure Set_Selector_Names
11321 (N : Node_Id; Val : List_Id); -- List1
11323 procedure Set_Shift_Count_OK
11324 (N : Node_Id; Val : Boolean := True); -- Flag4
11326 procedure Set_Source_Type
11327 (N : Node_Id; Val : Entity_Id); -- Node1
11329 procedure Set_Specification
11330 (N : Node_Id; Val : Node_Id); -- Node1
11332 procedure Set_Split_PPC
11333 (N : Node_Id; Val : Boolean); -- Flag17
11335 procedure Set_Statements
11336 (N : Node_Id; Val : List_Id); -- List3
11338 procedure Set_Storage_Pool
11339 (N : Node_Id; Val : Node_Id); -- Node1
11341 procedure Set_Subpool_Handle_Name
11342 (N : Node_Id; Val : Node_Id); -- Node4
11344 procedure Set_Strval
11345 (N : Node_Id; Val : String_Id); -- Str3
11347 procedure Set_Subtype_Indication
11348 (N : Node_Id; Val : Node_Id); -- Node5
11350 procedure Set_Subtype_Mark
11351 (N : Node_Id; Val : Node_Id); -- Node4
11353 procedure Set_Subtype_Marks
11354 (N : Node_Id; Val : List_Id); -- List2
11356 procedure Set_Suppress_Assignment_Checks
11357 (N : Node_Id; Val : Boolean := True); -- Flag18
11359 procedure Set_Suppress_Loop_Warnings
11360 (N : Node_Id; Val : Boolean := True); -- Flag17
11362 procedure Set_Synchronized_Present
11363 (N : Node_Id; Val : Boolean := True); -- Flag7
11365 procedure Set_Tagged_Present
11366 (N : Node_Id; Val : Boolean := True); -- Flag15
11368 procedure Set_Target
11369 (N : Node_Id; Val : Entity_Id); -- Node1
11371 procedure Set_Target_Type
11372 (N : Node_Id; Val : Entity_Id); -- Node2
11374 procedure Set_Task_Definition
11375 (N : Node_Id; Val : Node_Id); -- Node3
11377 procedure Set_Task_Present
11378 (N : Node_Id; Val : Boolean := True); -- Flag5
11380 procedure Set_Then_Actions
11381 (N : Node_Id; Val : List_Id); -- List2
11383 procedure Set_Then_Statements
11384 (N : Node_Id; Val : List_Id); -- List2
11386 procedure Set_Treat_Fixed_As_Integer
11387 (N : Node_Id; Val : Boolean := True); -- Flag14
11389 procedure Set_Triggering_Alternative
11390 (N : Node_Id; Val : Node_Id); -- Node1
11392 procedure Set_Triggering_Statement
11393 (N : Node_Id; Val : Node_Id); -- Node1
11395 procedure Set_TSS_Elist
11396 (N : Node_Id; Val : Elist_Id); -- Elist3
11398 procedure Set_Type_Definition
11399 (N : Node_Id; Val : Node_Id); -- Node3
11401 procedure Set_Uneval_Old_Accept
11402 (N : Node_Id; Val : Boolean := True); -- Flag7
11404 procedure Set_Uneval_Old_Warn
11405 (N : Node_Id; Val : Boolean := True); -- Flag18
11408 (N : Node_Id; Val : Node_Id); -- Node2
11410 procedure Set_Unknown_Discriminants_Present
11411 (N : Node_Id; Val : Boolean := True); -- Flag13
11413 procedure Set_Unreferenced_In_Spec
11414 (N : Node_Id; Val : Boolean := True); -- Flag7
11416 procedure Set_Variant_Part
11417 (N : Node_Id; Val : Node_Id); -- Node4
11419 procedure Set_Variants
11420 (N : Node_Id; Val : List_Id); -- List1
11422 procedure Set_Visible_Declarations
11423 (N : Node_Id; Val : List_Id); -- List2
11425 procedure Set_Uninitialized_Variable
11426 (N : Node_Id; Val : Node_Id); -- Node3
11428 procedure Set_Used_Operations
11429 (N : Node_Id; Val : Elist_Id); -- Elist2
11431 procedure Set_Was_Attribute_Reference
11432 (N : Node_Id; Val : Boolean := True); -- Flag2
11434 procedure Set_Was_Expression_Function
11435 (N : Node_Id; Val : Boolean := True); -- Flag18
11437 procedure Set_Was_Originally_Stub
11438 (N : Node_Id; Val : Boolean := True); -- Flag13
11440 -------------------------
11441 -- Iterator Procedures --
11442 -------------------------
11444 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
11446 procedure Next_Entity (N : in out Node_Id);
11447 procedure Next_Named_Actual (N : in out Node_Id);
11448 procedure Next_Rep_Item (N : in out Node_Id);
11449 procedure Next_Use_Clause (N : in out Node_Id);
11451 -------------------------------------------
11452 -- Miscellaneous Tree Access Subprograms --
11453 -------------------------------------------
11455 function End_Location (N : Node_Id) return Source_Ptr;
11456 -- N is an N_If_Statement or N_Case_Statement node, and this function
11457 -- returns the location of the IF token in the END IF sequence by
11458 -- translating the value of the End_Span field.
11460 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
11461 -- N is an N_If_Statement or N_Case_Statement node. This procedure sets
11462 -- the End_Span field to correspond to the given value S. In other words,
11463 -- End_Span is set to the difference between S and Sloc (N), the starting
11466 function Get_Pragma_Arg (Arg : Node_Id) return Node_Id;
11467 -- Given an argument to a pragma Arg, this function returns the expression
11468 -- for the argument. This is Arg itself, or, in the case where Arg is a
11469 -- pragma argument association node, the expression from this node.
11471 --------------------------------
11472 -- Node_Kind Membership Tests --
11473 --------------------------------
11475 -- The following functions allow a convenient notation for testing whether
11476 -- a Node_Kind value matches any one of a list of possible values. In each
11477 -- case True is returned if the given T argument is equal to any of the V
11478 -- arguments. Note that there is a similar set of functions defined in
11479 -- Atree where the first argument is a Node_Id whose Nkind field is tested.
11484 V2 : Node_Kind) return Boolean;
11490 V3 : Node_Kind) return Boolean;
11497 V4 : Node_Kind) return Boolean;
11505 V5 : Node_Kind) return Boolean;
11514 V6 : Node_Kind) return Boolean;
11524 V7 : Node_Kind) return Boolean;
11535 V8 : Node_Kind) return Boolean;
11547 V9 : Node_Kind) return Boolean;
11560 V10 : Node_Kind) return Boolean;
11574 V11 : Node_Kind) return Boolean;
11576 pragma Inline (Nkind_In);
11577 -- Inline all above functions
11579 -----------------------
11580 -- Utility Functions --
11581 -----------------------
11583 procedure Map_Pragma_Name (From, To : Name_Id);
11584 -- Used in the implementation of pragma Rename_Pragma. Maps pragma name
11585 -- From to pragma name To, so From can be used as a synonym for To.
11587 Too_Many_Pragma_Mappings : exception;
11588 -- Raised if Map_Pragma_Name is called too many times. We expect that few
11589 -- programs will use it at all, and those that do will use it approximately
11592 function Pragma_Name (N : Node_Id) return Name_Id;
11593 -- Obtain the name of pragma N from the Chars field of its identifier. If
11594 -- the pragma has been renamed using Rename_Pragma, this routine returns
11595 -- the name of the renaming.
11597 function Pragma_Name_Unmapped (N : Node_Id) return Name_Id;
11598 -- Obtain the name of pragma N from the Chars field of its identifier. This
11599 -- form of name extraction does not take into account renamings performed
11600 -- by Rename_Pragma.
11602 -----------------------------
11603 -- Syntactic Parent Tables --
11604 -----------------------------
11606 -- These tables show for each node, and for each of the five fields,
11607 -- whether the corresponding field is syntactic (True) or semantic (False).
11608 -- Unused entries are also set to False.
11610 subtype Field_Num is Natural range 1 .. 5;
11612 Is_Syntactic_Field : constant array (Node_Kind, Field_Num) of Boolean := (
11614 -- Following entries can be built automatically from the sinfo sources
11615 -- using the makeisf utility (currently this program is in spitbol).
11618 (1 => True, -- Chars (Name1)
11619 2 => False, -- Original_Discriminant (Node2-Sem)
11620 3 => False, -- unused
11621 4 => False, -- Entity (Node4-Sem)
11622 5 => False), -- Etype (Node5-Sem)
11624 N_Integer_Literal =>
11625 (1 => False, -- unused
11626 2 => False, -- Original_Entity (Node2-Sem)
11627 3 => True, -- Intval (Uint3)
11628 4 => False, -- unused
11629 5 => False), -- Etype (Node5-Sem)
11632 (1 => False, -- unused
11633 2 => False, -- Original_Entity (Node2-Sem)
11634 3 => True, -- Realval (Ureal3)
11635 4 => False, -- Corresponding_Integer_Value (Uint4-Sem)
11636 5 => False), -- Etype (Node5-Sem)
11638 N_Character_Literal =>
11639 (1 => True, -- Chars (Name1)
11640 2 => True, -- Char_Literal_Value (Uint2)
11641 3 => False, -- unused
11642 4 => False, -- Entity (Node4-Sem)
11643 5 => False), -- Etype (Node5-Sem)
11645 N_String_Literal =>
11646 (1 => False, -- unused
11647 2 => False, -- unused
11648 3 => True, -- Strval (Str3)
11649 4 => False, -- unused
11650 5 => False), -- Etype (Node5-Sem)
11653 (1 => False, -- Next_Pragma (Node1-Sem)
11654 2 => True, -- Pragma_Argument_Associations (List2)
11655 3 => False, -- Corresponding_Aspect (Node3-Sem)
11656 4 => True, -- Pragma_Identifier (Node4)
11657 5 => False), -- Next_Rep_Item (Node5-Sem)
11659 N_Pragma_Argument_Association =>
11660 (1 => True, -- Chars (Name1)
11661 2 => False, -- Expression_Copy (Node2-Sem)
11662 3 => True, -- Expression (Node3)
11663 4 => False, -- unused
11664 5 => False), -- unused
11666 N_Defining_Identifier =>
11667 (1 => True, -- Chars (Name1)
11668 2 => False, -- Next_Entity (Node2-Sem)
11669 3 => False, -- Scope (Node3-Sem)
11670 4 => False, -- unused
11671 5 => False), -- Etype (Node5-Sem)
11673 N_Full_Type_Declaration =>
11674 (1 => True, -- Defining_Identifier (Node1)
11675 2 => False, -- Incomplete_View (Node2-Sem)
11676 3 => True, -- Type_Definition (Node3)
11677 4 => True, -- Discriminant_Specifications (List4)
11678 5 => False), -- unused
11680 N_Subtype_Declaration =>
11681 (1 => True, -- Defining_Identifier (Node1)
11682 2 => False, -- unused
11683 3 => False, -- unused
11684 4 => False, -- Generic_Parent_Type (Node4-Sem)
11685 5 => True), -- Subtype_Indication (Node5)
11687 N_Subtype_Indication =>
11688 (1 => False, -- unused
11689 2 => False, -- unused
11690 3 => True, -- Constraint (Node3)
11691 4 => True, -- Subtype_Mark (Node4)
11692 5 => False), -- Etype (Node5-Sem)
11694 N_Object_Declaration =>
11695 (1 => True, -- Defining_Identifier (Node1)
11696 2 => False, -- Handler_List_Entry (Node2-Sem)
11697 3 => True, -- Expression (Node3)
11698 4 => True, -- Object_Definition (Node4)
11699 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
11701 N_Number_Declaration =>
11702 (1 => True, -- Defining_Identifier (Node1)
11703 2 => False, -- unused
11704 3 => True, -- Expression (Node3)
11705 4 => False, -- unused
11706 5 => False), -- unused
11708 N_Derived_Type_Definition =>
11709 (1 => False, -- unused
11710 2 => True, -- Interface_List (List2)
11711 3 => True, -- Record_Extension_Part (Node3)
11712 4 => False, -- unused
11713 5 => True), -- Subtype_Indication (Node5)
11715 N_Range_Constraint =>
11716 (1 => False, -- unused
11717 2 => False, -- unused
11718 3 => False, -- unused
11719 4 => True, -- Range_Expression (Node4)
11720 5 => False), -- unused
11723 (1 => True, -- Low_Bound (Node1)
11724 2 => True, -- High_Bound (Node2)
11725 3 => False, -- unused
11726 4 => False, -- unused
11727 5 => False), -- Etype (Node5-Sem)
11729 N_Enumeration_Type_Definition =>
11730 (1 => True, -- Literals (List1)
11731 2 => False, -- unused
11732 3 => False, -- unused
11733 4 => True, -- End_Label (Node4)
11734 5 => False), -- unused
11736 N_Defining_Character_Literal =>
11737 (1 => True, -- Chars (Name1)
11738 2 => False, -- Next_Entity (Node2-Sem)
11739 3 => False, -- Scope (Node3-Sem)
11740 4 => False, -- unused
11741 5 => False), -- Etype (Node5-Sem)
11743 N_Signed_Integer_Type_Definition =>
11744 (1 => True, -- Low_Bound (Node1)
11745 2 => True, -- High_Bound (Node2)
11746 3 => False, -- unused
11747 4 => False, -- unused
11748 5 => False), -- unused
11750 N_Modular_Type_Definition =>
11751 (1 => False, -- unused
11752 2 => False, -- unused
11753 3 => True, -- Expression (Node3)
11754 4 => False, -- unused
11755 5 => False), -- unused
11757 N_Floating_Point_Definition =>
11758 (1 => False, -- unused
11759 2 => True, -- Digits_Expression (Node2)
11760 3 => False, -- unused
11761 4 => True, -- Real_Range_Specification (Node4)
11762 5 => False), -- unused
11764 N_Real_Range_Specification =>
11765 (1 => True, -- Low_Bound (Node1)
11766 2 => True, -- High_Bound (Node2)
11767 3 => False, -- unused
11768 4 => False, -- unused
11769 5 => False), -- unused
11771 N_Ordinary_Fixed_Point_Definition =>
11772 (1 => False, -- unused
11773 2 => False, -- unused
11774 3 => True, -- Delta_Expression (Node3)
11775 4 => True, -- Real_Range_Specification (Node4)
11776 5 => False), -- unused
11778 N_Decimal_Fixed_Point_Definition =>
11779 (1 => False, -- unused
11780 2 => True, -- Digits_Expression (Node2)
11781 3 => True, -- Delta_Expression (Node3)
11782 4 => True, -- Real_Range_Specification (Node4)
11783 5 => False), -- unused
11785 N_Digits_Constraint =>
11786 (1 => False, -- unused
11787 2 => True, -- Digits_Expression (Node2)
11788 3 => False, -- unused
11789 4 => True, -- Range_Constraint (Node4)
11790 5 => False), -- unused
11792 N_Unconstrained_Array_Definition =>
11793 (1 => False, -- unused
11794 2 => True, -- Subtype_Marks (List2)
11795 3 => False, -- unused
11796 4 => True, -- Component_Definition (Node4)
11797 5 => False), -- unused
11799 N_Constrained_Array_Definition =>
11800 (1 => False, -- unused
11801 2 => True, -- Discrete_Subtype_Definitions (List2)
11802 3 => False, -- unused
11803 4 => True, -- Component_Definition (Node4)
11804 5 => False), -- unused
11806 N_Component_Definition =>
11807 (1 => False, -- unused
11808 2 => False, -- unused
11809 3 => True, -- Access_Definition (Node3)
11810 4 => False, -- unused
11811 5 => True), -- Subtype_Indication (Node5)
11813 N_Discriminant_Specification =>
11814 (1 => True, -- Defining_Identifier (Node1)
11815 2 => False, -- unused
11816 3 => True, -- Expression (Node3)
11817 4 => False, -- unused
11818 5 => True), -- Discriminant_Type (Node5)
11820 N_Index_Or_Discriminant_Constraint =>
11821 (1 => True, -- Constraints (List1)
11822 2 => False, -- unused
11823 3 => False, -- unused
11824 4 => False, -- unused
11825 5 => False), -- unused
11827 N_Discriminant_Association =>
11828 (1 => True, -- Selector_Names (List1)
11829 2 => False, -- unused
11830 3 => True, -- Expression (Node3)
11831 4 => False, -- unused
11832 5 => False), -- unused
11834 N_Record_Definition =>
11835 (1 => True, -- Component_List (Node1)
11836 2 => True, -- Interface_List (List2)
11837 3 => False, -- unused
11838 4 => True, -- End_Label (Node4)
11839 5 => False), -- unused
11841 N_Component_List =>
11842 (1 => False, -- unused
11843 2 => False, -- unused
11844 3 => True, -- Component_Items (List3)
11845 4 => True, -- Variant_Part (Node4)
11846 5 => False), -- unused
11848 N_Component_Declaration =>
11849 (1 => True, -- Defining_Identifier (Node1)
11850 2 => False, -- unused
11851 3 => True, -- Expression (Node3)
11852 4 => True, -- Component_Definition (Node4)
11853 5 => False), -- unused
11856 (1 => True, -- Variants (List1)
11857 2 => True, -- Name (Node2)
11858 3 => False, -- unused
11859 4 => False, -- unused
11860 5 => False), -- unused
11863 (1 => True, -- Component_List (Node1)
11864 2 => False, -- Enclosing_Variant (Node2-Sem)
11865 3 => False, -- Present_Expr (Uint3-Sem)
11866 4 => True, -- Discrete_Choices (List4)
11867 5 => False), -- Dcheck_Function (Node5-Sem)
11870 (1 => False, -- Others_Discrete_Choices (List1-Sem)
11871 2 => False, -- unused
11872 3 => False, -- unused
11873 4 => False, -- unused
11874 5 => False), -- unused
11876 N_Access_To_Object_Definition =>
11877 (1 => False, -- unused
11878 2 => False, -- unused
11879 3 => False, -- unused
11880 4 => False, -- unused
11881 5 => True), -- Subtype_Indication (Node5)
11883 N_Access_Function_Definition =>
11884 (1 => False, -- unused
11885 2 => False, -- unused
11886 3 => True, -- Parameter_Specifications (List3)
11887 4 => True, -- Result_Definition (Node4)
11888 5 => False), -- unused
11890 N_Access_Procedure_Definition =>
11891 (1 => False, -- unused
11892 2 => False, -- unused
11893 3 => True, -- Parameter_Specifications (List3)
11894 4 => False, -- unused
11895 5 => False), -- unused
11897 N_Access_Definition =>
11898 (1 => False, -- unused
11899 2 => False, -- unused
11900 3 => True, -- Access_To_Subprogram_Definition (Node3)
11901 4 => True, -- Subtype_Mark (Node4)
11902 5 => False), -- unused
11904 N_Incomplete_Type_Declaration =>
11905 (1 => True, -- Defining_Identifier (Node1)
11906 2 => False, -- unused
11907 3 => False, -- unused
11908 4 => True, -- Discriminant_Specifications (List4)
11909 5 => False), -- Premature_Use
11911 N_Explicit_Dereference =>
11912 (1 => False, -- unused
11913 2 => False, -- unused
11914 3 => True, -- Prefix (Node3)
11915 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
11916 5 => False), -- Etype (Node5-Sem)
11918 N_Indexed_Component =>
11919 (1 => True, -- Expressions (List1)
11920 2 => False, -- unused
11921 3 => True, -- Prefix (Node3)
11922 4 => False, -- Generalized_Indexing (Node4-Sem)
11923 5 => False), -- Etype (Node5-Sem)
11926 (1 => False, -- unused
11927 2 => False, -- unused
11928 3 => True, -- Prefix (Node3)
11929 4 => True, -- Discrete_Range (Node4)
11930 5 => False), -- Etype (Node5-Sem)
11932 N_Selected_Component =>
11933 (1 => False, -- unused
11934 2 => True, -- Selector_Name (Node2)
11935 3 => True, -- Prefix (Node3)
11936 4 => False, -- unused
11937 5 => False), -- Etype (Node5-Sem)
11939 N_Attribute_Reference =>
11940 (1 => True, -- Expressions (List1)
11941 2 => True, -- Attribute_Name (Name2)
11942 3 => True, -- Prefix (Node3)
11943 4 => False, -- Entity (Node4-Sem)
11944 5 => False), -- Etype (Node5-Sem)
11947 (1 => True, -- Expressions (List1)
11948 2 => True, -- Component_Associations (List2)
11949 3 => False, -- Aggregate_Bounds (Node3-Sem)
11950 4 => False, -- unused
11951 5 => False), -- Etype (Node5-Sem)
11953 N_Component_Association =>
11954 (1 => True, -- Choices (List1)
11955 2 => False, -- Loop_Actions (List2-Sem)
11956 3 => True, -- Expression (Node3)
11957 4 => False, -- unused
11958 5 => False), -- unused
11960 N_Iterated_Component_Association =>
11961 (1 => True, -- Defining_Identifier (Node1)
11962 2 => True, -- Loop_Actions (List2-Sem)
11963 3 => True, -- Expression (Node3)
11964 4 => True, -- Discrete_Choices (List4)
11965 5 => False), -- unused
11967 N_Delta_Aggregate =>
11968 (1 => False, -- Expressions (List1-Sem)
11969 2 => True, -- Component_Associations (List2)
11970 3 => True, -- Expression (Node3)
11971 4 => False, -- Unused
11972 5 => False), -- Etype (Node5-Sem)
11974 N_Extension_Aggregate =>
11975 (1 => True, -- Expressions (List1)
11976 2 => True, -- Component_Associations (List2)
11977 3 => True, -- Ancestor_Part (Node3)
11978 4 => False, -- unused
11979 5 => False), -- Etype (Node5-Sem)
11982 (1 => False, -- unused
11983 2 => False, -- unused
11984 3 => False, -- unused
11985 4 => False, -- unused
11986 5 => False), -- Etype (Node5-Sem)
11989 (1 => False, -- Actions (List1-Sem)
11990 2 => True, -- Left_Opnd (Node2)
11991 3 => True, -- Right_Opnd (Node3)
11992 4 => False, -- unused
11993 5 => False), -- Etype (Node5-Sem)
11996 (1 => False, -- Actions (List1-Sem)
11997 2 => True, -- Left_Opnd (Node2)
11998 3 => True, -- Right_Opnd (Node3)
11999 4 => False, -- unused
12000 5 => False), -- Etype (Node5-Sem)
12003 (1 => False, -- unused
12004 2 => True, -- Left_Opnd (Node2)
12005 3 => True, -- Right_Opnd (Node3)
12006 4 => True, -- Alternatives (List4)
12007 5 => False), -- Etype (Node5-Sem)
12010 (1 => False, -- unused
12011 2 => True, -- Left_Opnd (Node2)
12012 3 => True, -- Right_Opnd (Node3)
12013 4 => True, -- Alternatives (List4)
12014 5 => False), -- Etype (Node5-Sem)
12017 (1 => True, -- Chars (Name1)
12018 2 => True, -- Left_Opnd (Node2)
12019 3 => True, -- Right_Opnd (Node3)
12020 4 => False, -- Entity (Node4-Sem)
12021 5 => False), -- Etype (Node5-Sem)
12024 (1 => True, -- Chars (Name1)
12025 2 => True, -- Left_Opnd (Node2)
12026 3 => True, -- Right_Opnd (Node3)
12027 4 => False, -- Entity (Node4-Sem)
12028 5 => False), -- Etype (Node5-Sem)
12031 (1 => True, -- Chars (Name1)
12032 2 => True, -- Left_Opnd (Node2)
12033 3 => True, -- Right_Opnd (Node3)
12034 4 => False, -- Entity (Node4-Sem)
12035 5 => False), -- Etype (Node5-Sem)
12038 (1 => True, -- Chars (Name1)
12039 2 => True, -- Left_Opnd (Node2)
12040 3 => True, -- Right_Opnd (Node3)
12041 4 => False, -- Entity (Node4-Sem)
12042 5 => False), -- Etype (Node5-Sem)
12045 (1 => True, -- Chars (Name1)
12046 2 => True, -- Left_Opnd (Node2)
12047 3 => True, -- Right_Opnd (Node3)
12048 4 => False, -- Entity (Node4-Sem)
12049 5 => False), -- Etype (Node5-Sem)
12052 (1 => True, -- Chars (Name1)
12053 2 => True, -- Left_Opnd (Node2)
12054 3 => True, -- Right_Opnd (Node3)
12055 4 => False, -- Entity (Node4-Sem)
12056 5 => False), -- Etype (Node5-Sem)
12059 (1 => True, -- Chars (Name1)
12060 2 => True, -- Left_Opnd (Node2)
12061 3 => True, -- Right_Opnd (Node3)
12062 4 => False, -- Entity (Node4-Sem)
12063 5 => False), -- Etype (Node5-Sem)
12066 (1 => True, -- Chars (Name1)
12067 2 => True, -- Left_Opnd (Node2)
12068 3 => True, -- Right_Opnd (Node3)
12069 4 => False, -- Entity (Node4-Sem)
12070 5 => False), -- Etype (Node5-Sem)
12073 (1 => True, -- Chars (Name1)
12074 2 => True, -- Left_Opnd (Node2)
12075 3 => True, -- Right_Opnd (Node3)
12076 4 => False, -- Entity (Node4-Sem)
12077 5 => False), -- Etype (Node5-Sem)
12080 (1 => True, -- Chars (Name1)
12081 2 => True, -- Left_Opnd (Node2)
12082 3 => True, -- Right_Opnd (Node3)
12083 4 => False, -- Entity (Node4-Sem)
12084 5 => False), -- Etype (Node5-Sem)
12087 (1 => True, -- Chars (Name1)
12088 2 => True, -- Left_Opnd (Node2)
12089 3 => True, -- Right_Opnd (Node3)
12090 4 => False, -- Entity (Node4-Sem)
12091 5 => False), -- Etype (Node5-Sem)
12094 (1 => True, -- Chars (Name1)
12095 2 => True, -- Left_Opnd (Node2)
12096 3 => True, -- Right_Opnd (Node3)
12097 4 => False, -- Entity (Node4-Sem)
12098 5 => False), -- Etype (Node5-Sem)
12101 (1 => True, -- Chars (Name1)
12102 2 => True, -- Left_Opnd (Node2)
12103 3 => True, -- Right_Opnd (Node3)
12104 4 => False, -- Entity (Node4-Sem)
12105 5 => False), -- Etype (Node5-Sem)
12108 (1 => True, -- Chars (Name1)
12109 2 => True, -- Left_Opnd (Node2)
12110 3 => True, -- Right_Opnd (Node3)
12111 4 => False, -- Entity (Node4-Sem)
12112 5 => False), -- Etype (Node5-Sem)
12115 (1 => True, -- Chars (Name1)
12116 2 => True, -- Left_Opnd (Node2)
12117 3 => True, -- Right_Opnd (Node3)
12118 4 => False, -- Entity (Node4-Sem)
12119 5 => False), -- Etype (Node5-Sem)
12122 (1 => True, -- Chars (Name1)
12123 2 => True, -- Left_Opnd (Node2)
12124 3 => True, -- Right_Opnd (Node3)
12125 4 => False, -- Entity (Node4-Sem)
12126 5 => False), -- Etype (Node5-Sem)
12129 (1 => True, -- Chars (Name1)
12130 2 => True, -- Left_Opnd (Node2)
12131 3 => True, -- Right_Opnd (Node3)
12132 4 => False, -- Entity (Node4-Sem)
12133 5 => False), -- Etype (Node5-Sem)
12136 (1 => True, -- Chars (Name1)
12137 2 => False, -- unused
12138 3 => True, -- Right_Opnd (Node3)
12139 4 => False, -- Entity (Node4-Sem)
12140 5 => False), -- Etype (Node5-Sem)
12143 (1 => True, -- Chars (Name1)
12144 2 => False, -- unused
12145 3 => True, -- Right_Opnd (Node3)
12146 4 => False, -- Entity (Node4-Sem)
12147 5 => False), -- Etype (Node5-Sem)
12150 (1 => True, -- Chars (Name1)
12151 2 => False, -- unused
12152 3 => True, -- Right_Opnd (Node3)
12153 4 => False, -- Entity (Node4-Sem)
12154 5 => False), -- Etype (Node5-Sem)
12157 (1 => True, -- Chars (Name1)
12158 2 => False, -- unused
12159 3 => True, -- Right_Opnd (Node3)
12160 4 => False, -- Entity (Node4-Sem)
12161 5 => False), -- Etype (Node5-Sem)
12163 N_Type_Conversion =>
12164 (1 => False, -- unused
12165 2 => False, -- unused
12166 3 => True, -- Expression (Node3)
12167 4 => True, -- Subtype_Mark (Node4)
12168 5 => False), -- Etype (Node5-Sem)
12170 N_Qualified_Expression =>
12171 (1 => False, -- unused
12172 2 => False, -- unused
12173 3 => True, -- Expression (Node3)
12174 4 => True, -- Subtype_Mark (Node4)
12175 5 => False), -- Etype (Node5-Sem)
12177 N_Quantified_Expression =>
12178 (1 => True, -- Condition (Node1)
12179 2 => True, -- Iterator_Specification (Node2)
12180 3 => False, -- unused
12181 4 => True, -- Loop_Parameter_Specification (Node4)
12182 5 => False), -- Etype (Node5-Sem)
12185 (1 => False, -- Storage_Pool (Node1-Sem)
12186 2 => False, -- Procedure_To_Call (Node2-Sem)
12187 3 => True, -- Expression (Node3)
12188 4 => True, -- Subpool_Handle_Name (Node4)
12189 5 => False), -- Etype (Node5-Sem)
12191 N_Null_Statement =>
12192 (1 => False, -- unused
12193 2 => False, -- unused
12194 3 => False, -- unused
12195 4 => False, -- unused
12196 5 => False), -- unused
12199 (1 => True, -- Identifier (Node1)
12200 2 => False, -- unused
12201 3 => False, -- unused
12202 4 => False, -- unused
12203 5 => False), -- unused
12205 N_Assignment_Statement =>
12206 (1 => False, -- unused
12207 2 => True, -- Name (Node2)
12208 3 => True, -- Expression (Node3)
12209 4 => False, -- unused
12210 5 => False), -- unused
12213 (1 => False, -- unused
12214 2 => False, -- unused
12215 3 => False, -- unused
12216 4 => False, -- unused
12217 5 => False), -- Etype (Node5-Sem)
12220 (1 => True, -- Condition (Node1)
12221 2 => True, -- Then_Statements (List2)
12222 3 => True, -- Elsif_Parts (List3)
12223 4 => True, -- Else_Statements (List4)
12224 5 => True), -- End_Span (Uint5)
12227 (1 => True, -- Condition (Node1)
12228 2 => True, -- Then_Statements (List2)
12229 3 => False, -- Condition_Actions (List3-Sem)
12230 4 => False, -- unused
12231 5 => False), -- unused
12233 N_Case_Expression =>
12234 (1 => False, -- unused
12235 2 => False, -- unused
12236 3 => True, -- Expression (Node3)
12237 4 => True, -- Alternatives (List4)
12238 5 => False), -- unused
12240 N_Case_Expression_Alternative =>
12241 (1 => False, -- Actions (List1-Sem)
12242 2 => False, -- unused
12243 3 => True, -- Expression (Node3)
12244 4 => True, -- Discrete_Choices (List4)
12245 5 => False), -- unused
12247 N_Case_Statement =>
12248 (1 => False, -- unused
12249 2 => False, -- unused
12250 3 => True, -- Expression (Node3)
12251 4 => True, -- Alternatives (List4)
12252 5 => True), -- End_Span (Uint5)
12254 N_Case_Statement_Alternative =>
12255 (1 => False, -- unused
12256 2 => False, -- unused
12257 3 => True, -- Statements (List3)
12258 4 => True, -- Discrete_Choices (List4)
12259 5 => False), -- unused
12261 N_Loop_Statement =>
12262 (1 => True, -- Identifier (Node1)
12263 2 => True, -- Iteration_Scheme (Node2)
12264 3 => True, -- Statements (List3)
12265 4 => True, -- End_Label (Node4)
12266 5 => False), -- unused
12268 N_Iteration_Scheme =>
12269 (1 => True, -- Condition (Node1)
12270 2 => True, -- Iterator_Specification (Node2)
12271 3 => False, -- Condition_Actions (List3-Sem)
12272 4 => True, -- Loop_Parameter_Specification (Node4)
12273 5 => False), -- unused
12275 N_Loop_Parameter_Specification =>
12276 (1 => True, -- Defining_Identifier (Node1)
12277 2 => False, -- unused
12278 3 => False, -- unused
12279 4 => True, -- Discrete_Subtype_Definition (Node4)
12280 5 => False), -- unused
12282 N_Iterator_Specification =>
12283 (1 => True, -- Defining_Identifier (Node1)
12284 2 => True, -- Name (Node2)
12285 3 => False, -- Unused
12286 4 => False, -- Unused
12287 5 => True), -- Subtype_Indication (Node5)
12289 N_Block_Statement =>
12290 (1 => True, -- Identifier (Node1)
12291 2 => True, -- Declarations (List2)
12292 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12293 4 => True, -- Handled_Statement_Sequence (Node4)
12294 5 => False), -- unused
12296 N_Exit_Statement =>
12297 (1 => True, -- Condition (Node1)
12298 2 => True, -- Name (Node2)
12299 3 => False, -- unused
12300 4 => False, -- unused
12301 5 => False), -- unused
12303 N_Goto_Statement =>
12304 (1 => False, -- unused
12305 2 => True, -- Name (Node2)
12306 3 => False, -- unused
12307 4 => False, -- unused
12308 5 => False), -- unused
12310 N_Subprogram_Declaration =>
12311 (1 => True, -- Specification (Node1)
12312 2 => False, -- unused
12313 3 => False, -- Body_To_Inline (Node3-Sem)
12314 4 => False, -- Parent_Spec (Node4-Sem)
12315 5 => False), -- Corresponding_Body (Node5-Sem)
12317 N_Abstract_Subprogram_Declaration =>
12318 (1 => True, -- Specification (Node1)
12319 2 => False, -- unused
12320 3 => False, -- unused
12321 4 => False, -- unused
12322 5 => False), -- unused
12324 N_Function_Specification =>
12325 (1 => True, -- Defining_Unit_Name (Node1)
12326 2 => False, -- unused
12327 3 => True, -- Parameter_Specifications (List3)
12328 4 => True, -- Result_Definition (Node4)
12329 5 => False), -- Generic_Parent (Node5-Sem)
12331 N_Procedure_Specification =>
12332 (1 => True, -- Defining_Unit_Name (Node1)
12333 2 => False, -- Null_Statement (Node2-Sem)
12334 3 => True, -- Parameter_Specifications (List3)
12335 4 => False, -- unused
12336 5 => False), -- Generic_Parent (Node5-Sem)
12339 (1 => True, -- Identifier (Node1)
12340 2 => True, -- Name (Node2)
12341 3 => False, -- unused
12342 4 => False, -- unused
12343 5 => False), -- unused
12345 N_Defining_Program_Unit_Name =>
12346 (1 => True, -- Defining_Identifier (Node1)
12347 2 => True, -- Name (Node2)
12348 3 => False, -- unused
12349 4 => False, -- unused
12350 5 => False), -- unused
12352 N_Operator_Symbol =>
12353 (1 => True, -- Chars (Name1)
12354 2 => False, -- unused
12355 3 => True, -- Strval (Str3)
12356 4 => False, -- Entity (Node4-Sem)
12357 5 => False), -- Etype (Node5-Sem)
12359 N_Defining_Operator_Symbol =>
12360 (1 => True, -- Chars (Name1)
12361 2 => False, -- Next_Entity (Node2-Sem)
12362 3 => False, -- Scope (Node3-Sem)
12363 4 => False, -- unused
12364 5 => False), -- Etype (Node5-Sem)
12366 N_Parameter_Specification =>
12367 (1 => True, -- Defining_Identifier (Node1)
12368 2 => True, -- Parameter_Type (Node2)
12369 3 => True, -- Expression (Node3)
12370 4 => False, -- unused
12371 5 => False), -- Default_Expression (Node5-Sem)
12373 N_Subprogram_Body =>
12374 (1 => True, -- Specification (Node1)
12375 2 => True, -- Declarations (List2)
12376 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12377 4 => True, -- Handled_Statement_Sequence (Node4)
12378 5 => False), -- Corresponding_Spec (Node5-Sem)
12380 N_Expression_Function =>
12381 (1 => True, -- Specification (Node1)
12382 2 => False, -- unused
12383 3 => True, -- Expression (Node3)
12384 4 => False, -- unused
12385 5 => False), -- unused
12387 N_Procedure_Call_Statement =>
12388 (1 => False, -- Controlling_Argument (Node1-Sem)
12389 2 => True, -- Name (Node2)
12390 3 => True, -- Parameter_Associations (List3)
12391 4 => False, -- First_Named_Actual (Node4-Sem)
12392 5 => False), -- Etype (Node5-Sem)
12395 (1 => False, -- Controlling_Argument (Node1-Sem)
12396 2 => True, -- Name (Node2)
12397 3 => True, -- Parameter_Associations (List3)
12398 4 => False, -- First_Named_Actual (Node4-Sem)
12399 5 => False), -- Etype (Node5-Sem)
12401 N_Parameter_Association =>
12402 (1 => False, -- unused
12403 2 => True, -- Selector_Name (Node2)
12404 3 => True, -- Explicit_Actual_Parameter (Node3)
12405 4 => False, -- Next_Named_Actual (Node4-Sem)
12406 5 => False), -- unused
12408 N_Simple_Return_Statement =>
12409 (1 => False, -- Storage_Pool (Node1-Sem)
12410 2 => False, -- Procedure_To_Call (Node2-Sem)
12411 3 => True, -- Expression (Node3)
12412 4 => False, -- unused
12413 5 => False), -- Return_Statement_Entity (Node5-Sem)
12415 N_Extended_Return_Statement =>
12416 (1 => False, -- Storage_Pool (Node1-Sem)
12417 2 => False, -- Procedure_To_Call (Node2-Sem)
12418 3 => True, -- Return_Object_Declarations (List3)
12419 4 => True, -- Handled_Statement_Sequence (Node4)
12420 5 => False), -- Return_Statement_Entity (Node5-Sem)
12422 N_Package_Declaration =>
12423 (1 => True, -- Specification (Node1)
12424 2 => False, -- unused
12425 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12426 4 => False, -- Parent_Spec (Node4-Sem)
12427 5 => False), -- Corresponding_Body (Node5-Sem)
12429 N_Package_Specification =>
12430 (1 => True, -- Defining_Unit_Name (Node1)
12431 2 => True, -- Visible_Declarations (List2)
12432 3 => True, -- Private_Declarations (List3)
12433 4 => True, -- End_Label (Node4)
12434 5 => False), -- Generic_Parent (Node5-Sem)
12437 (1 => True, -- Defining_Unit_Name (Node1)
12438 2 => True, -- Declarations (List2)
12439 3 => False, -- unused
12440 4 => True, -- Handled_Statement_Sequence (Node4)
12441 5 => False), -- Corresponding_Spec (Node5-Sem)
12443 N_Private_Type_Declaration =>
12444 (1 => True, -- Defining_Identifier (Node1)
12445 2 => False, -- unused
12446 3 => False, -- unused
12447 4 => True, -- Discriminant_Specifications (List4)
12448 5 => False), -- unused
12450 N_Private_Extension_Declaration =>
12451 (1 => True, -- Defining_Identifier (Node1)
12452 2 => True, -- Interface_List (List2)
12453 3 => False, -- unused
12454 4 => True, -- Discriminant_Specifications (List4)
12455 5 => True), -- Subtype_Indication (Node5)
12457 N_Use_Package_Clause =>
12458 (1 => False, -- Prev_Use_Clause (Node1-Sem)
12459 2 => True, -- Name (Node2)
12460 3 => False, -- Next_Use_Clause (Node3-Sem)
12461 4 => False, -- Associated_Node (Node4-Sem)
12462 5 => False), -- Hidden_By_Use_Clause (Elist5-Sem)
12464 N_Use_Type_Clause =>
12465 (1 => False, -- Prev_Use_Clause (Node1-Sem)
12466 2 => False, -- Used_Operations (Elist2-Sem)
12467 3 => False, -- Next_Use_Clause (Node3-Sem)
12468 4 => True, -- Subtype_Mark (Node4)
12469 5 => False), -- Hidden_By_Use_Clause (Elist5-Sem)
12471 N_Object_Renaming_Declaration =>
12472 (1 => True, -- Defining_Identifier (Node1)
12473 2 => True, -- Name (Node2)
12474 3 => True, -- Access_Definition (Node3)
12475 4 => True, -- Subtype_Mark (Node4)
12476 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
12478 N_Exception_Renaming_Declaration =>
12479 (1 => True, -- Defining_Identifier (Node1)
12480 2 => True, -- Name (Node2)
12481 3 => False, -- unused
12482 4 => False, -- unused
12483 5 => False), -- unused
12485 N_Package_Renaming_Declaration =>
12486 (1 => True, -- Defining_Unit_Name (Node1)
12487 2 => True, -- Name (Node2)
12488 3 => False, -- unused
12489 4 => False, -- Parent_Spec (Node4-Sem)
12490 5 => False), -- unused
12492 N_Subprogram_Renaming_Declaration =>
12493 (1 => True, -- Specification (Node1)
12494 2 => True, -- Name (Node2)
12495 3 => False, -- Corresponding_Formal_Spec (Node3-Sem)
12496 4 => False, -- Parent_Spec (Node4-Sem)
12497 5 => False), -- Corresponding_Spec (Node5-Sem)
12499 N_Generic_Package_Renaming_Declaration =>
12500 (1 => True, -- Defining_Unit_Name (Node1)
12501 2 => True, -- Name (Node2)
12502 3 => False, -- unused
12503 4 => False, -- Parent_Spec (Node4-Sem)
12504 5 => False), -- unused
12506 N_Generic_Procedure_Renaming_Declaration =>
12507 (1 => True, -- Defining_Unit_Name (Node1)
12508 2 => True, -- Name (Node2)
12509 3 => False, -- unused
12510 4 => False, -- Parent_Spec (Node4-Sem)
12511 5 => False), -- unused
12513 N_Generic_Function_Renaming_Declaration =>
12514 (1 => True, -- Defining_Unit_Name (Node1)
12515 2 => True, -- Name (Node2)
12516 3 => False, -- unused
12517 4 => False, -- Parent_Spec (Node4-Sem)
12518 5 => False), -- unused
12520 N_Task_Type_Declaration =>
12521 (1 => True, -- Defining_Identifier (Node1)
12522 2 => True, -- Interface_List (List2)
12523 3 => True, -- Task_Definition (Node3)
12524 4 => True, -- Discriminant_Specifications (List4)
12525 5 => False), -- Corresponding_Body (Node5-Sem)
12527 N_Single_Task_Declaration =>
12528 (1 => True, -- Defining_Identifier (Node1)
12529 2 => True, -- Interface_List (List2)
12530 3 => True, -- Task_Definition (Node3)
12531 4 => False, -- unused
12532 5 => False), -- unused
12534 N_Task_Definition =>
12535 (1 => False, -- unused
12536 2 => True, -- Visible_Declarations (List2)
12537 3 => True, -- Private_Declarations (List3)
12538 4 => True, -- End_Label (Node4)
12539 5 => False), -- unused
12542 (1 => True, -- Defining_Identifier (Node1)
12543 2 => True, -- Declarations (List2)
12544 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12545 4 => True, -- Handled_Statement_Sequence (Node4)
12546 5 => False), -- Corresponding_Spec (Node5-Sem)
12548 N_Protected_Type_Declaration =>
12549 (1 => True, -- Defining_Identifier (Node1)
12550 2 => True, -- Interface_List (List2)
12551 3 => True, -- Protected_Definition (Node3)
12552 4 => True, -- Discriminant_Specifications (List4)
12553 5 => False), -- Corresponding_Body (Node5-Sem)
12555 N_Single_Protected_Declaration =>
12556 (1 => True, -- Defining_Identifier (Node1)
12557 2 => True, -- Interface_List (List2)
12558 3 => True, -- Protected_Definition (Node3)
12559 4 => False, -- unused
12560 5 => False), -- unused
12562 N_Protected_Definition =>
12563 (1 => False, -- unused
12564 2 => True, -- Visible_Declarations (List2)
12565 3 => True, -- Private_Declarations (List3)
12566 4 => True, -- End_Label (Node4)
12567 5 => False), -- unused
12569 N_Protected_Body =>
12570 (1 => True, -- Defining_Identifier (Node1)
12571 2 => True, -- Declarations (List2)
12572 3 => False, -- unused
12573 4 => True, -- End_Label (Node4)
12574 5 => False), -- Corresponding_Spec (Node5-Sem)
12576 N_Entry_Declaration =>
12577 (1 => True, -- Defining_Identifier (Node1)
12578 2 => False, -- unused
12579 3 => True, -- Parameter_Specifications (List3)
12580 4 => True, -- Discrete_Subtype_Definition (Node4)
12581 5 => False), -- Corresponding_Body (Node5-Sem)
12583 N_Accept_Statement =>
12584 (1 => True, -- Entry_Direct_Name (Node1)
12585 2 => True, -- Declarations (List2)
12586 3 => True, -- Parameter_Specifications (List3)
12587 4 => True, -- Handled_Statement_Sequence (Node4)
12588 5 => True), -- Entry_Index (Node5)
12591 (1 => True, -- Defining_Identifier (Node1)
12592 2 => True, -- Declarations (List2)
12593 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12594 4 => True, -- Handled_Statement_Sequence (Node4)
12595 5 => True), -- Entry_Body_Formal_Part (Node5)
12597 N_Entry_Body_Formal_Part =>
12598 (1 => True, -- Condition (Node1)
12599 2 => False, -- unused
12600 3 => True, -- Parameter_Specifications (List3)
12601 4 => True, -- Entry_Index_Specification (Node4)
12602 5 => False), -- unused
12604 N_Entry_Index_Specification =>
12605 (1 => True, -- Defining_Identifier (Node1)
12606 2 => False, -- unused
12607 3 => False, -- unused
12608 4 => True, -- Discrete_Subtype_Definition (Node4)
12609 5 => False), -- unused
12611 N_Entry_Call_Statement =>
12612 (1 => False, -- unused
12613 2 => True, -- Name (Node2)
12614 3 => True, -- Parameter_Associations (List3)
12615 4 => False, -- First_Named_Actual (Node4-Sem)
12616 5 => False), -- unused
12618 N_Requeue_Statement =>
12619 (1 => False, -- unused
12620 2 => True, -- Name (Node2)
12621 3 => False, -- unused
12622 4 => False, -- unused
12623 5 => False), -- unused
12625 N_Delay_Until_Statement =>
12626 (1 => False, -- unused
12627 2 => False, -- unused
12628 3 => True, -- Expression (Node3)
12629 4 => False, -- unused
12630 5 => False), -- unused
12632 N_Delay_Relative_Statement =>
12633 (1 => False, -- unused
12634 2 => False, -- unused
12635 3 => True, -- Expression (Node3)
12636 4 => False, -- unused
12637 5 => False), -- unused
12639 N_Selective_Accept =>
12640 (1 => True, -- Select_Alternatives (List1)
12641 2 => False, -- unused
12642 3 => False, -- unused
12643 4 => True, -- Else_Statements (List4)
12644 5 => False), -- unused
12646 N_Accept_Alternative =>
12647 (1 => True, -- Condition (Node1)
12648 2 => True, -- Accept_Statement (Node2)
12649 3 => True, -- Statements (List3)
12650 4 => True, -- Pragmas_Before (List4)
12651 5 => False), -- Accept_Handler_Records (List5-Sem)
12653 N_Delay_Alternative =>
12654 (1 => True, -- Condition (Node1)
12655 2 => True, -- Delay_Statement (Node2)
12656 3 => True, -- Statements (List3)
12657 4 => True, -- Pragmas_Before (List4)
12658 5 => False), -- unused
12660 N_Terminate_Alternative =>
12661 (1 => True, -- Condition (Node1)
12662 2 => False, -- unused
12663 3 => False, -- unused
12664 4 => True, -- Pragmas_Before (List4)
12665 5 => True), -- Pragmas_After (List5)
12667 N_Timed_Entry_Call =>
12668 (1 => True, -- Entry_Call_Alternative (Node1)
12669 2 => False, -- unused
12670 3 => False, -- unused
12671 4 => True, -- Delay_Alternative (Node4)
12672 5 => False), -- unused
12674 N_Entry_Call_Alternative =>
12675 (1 => True, -- Entry_Call_Statement (Node1)
12676 2 => False, -- unused
12677 3 => True, -- Statements (List3)
12678 4 => True, -- Pragmas_Before (List4)
12679 5 => False), -- unused
12681 N_Conditional_Entry_Call =>
12682 (1 => True, -- Entry_Call_Alternative (Node1)
12683 2 => False, -- unused
12684 3 => False, -- unused
12685 4 => True, -- Else_Statements (List4)
12686 5 => False), -- unused
12688 N_Asynchronous_Select =>
12689 (1 => True, -- Triggering_Alternative (Node1)
12690 2 => True, -- Abortable_Part (Node2)
12691 3 => False, -- unused
12692 4 => False, -- unused
12693 5 => False), -- unused
12695 N_Triggering_Alternative =>
12696 (1 => True, -- Triggering_Statement (Node1)
12697 2 => False, -- unused
12698 3 => True, -- Statements (List3)
12699 4 => True, -- Pragmas_Before (List4)
12700 5 => False), -- unused
12702 N_Abortable_Part =>
12703 (1 => False, -- unused
12704 2 => False, -- unused
12705 3 => True, -- Statements (List3)
12706 4 => False, -- unused
12707 5 => False), -- unused
12709 N_Abort_Statement =>
12710 (1 => False, -- unused
12711 2 => True, -- Names (List2)
12712 3 => False, -- unused
12713 4 => False, -- unused
12714 5 => False), -- unused
12716 N_Compilation_Unit =>
12717 (1 => True, -- Context_Items (List1)
12718 2 => True, -- Unit (Node2)
12719 3 => False, -- First_Inlined_Subprogram (Node3-Sem)
12720 4 => False, -- Library_Unit (Node4-Sem)
12721 5 => True), -- Aux_Decls_Node (Node5)
12723 N_Compilation_Unit_Aux =>
12724 (1 => True, -- Actions (List1)
12725 2 => True, -- Declarations (List2)
12726 3 => False, -- Default_Storage_Pool (Node3)
12727 4 => True, -- Config_Pragmas (List4)
12728 5 => True), -- Pragmas_After (List5)
12731 (1 => False, -- unused
12732 2 => True, -- Name (Node2)
12733 3 => False, -- unused
12734 4 => False, -- Library_Unit (Node4-Sem)
12735 5 => False), -- Corresponding_Spec (Node5-Sem)
12737 N_Subprogram_Body_Stub =>
12738 (1 => True, -- Specification (Node1)
12739 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12740 3 => False, -- unused
12741 4 => False, -- Library_Unit (Node4-Sem)
12742 5 => False), -- Corresponding_Body (Node5-Sem)
12744 N_Package_Body_Stub =>
12745 (1 => True, -- Defining_Identifier (Node1)
12746 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12747 3 => False, -- unused
12748 4 => False, -- Library_Unit (Node4-Sem)
12749 5 => False), -- Corresponding_Body (Node5-Sem)
12751 N_Task_Body_Stub =>
12752 (1 => True, -- Defining_Identifier (Node1)
12753 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12754 3 => False, -- unused
12755 4 => False, -- Library_Unit (Node4-Sem)
12756 5 => False), -- Corresponding_Body (Node5-Sem)
12758 N_Protected_Body_Stub =>
12759 (1 => True, -- Defining_Identifier (Node1)
12760 2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
12761 3 => False, -- unused
12762 4 => False, -- Library_Unit (Node4-Sem)
12763 5 => False), -- Corresponding_Body (Node5-Sem)
12766 (1 => True, -- Proper_Body (Node1)
12767 2 => True, -- Name (Node2)
12768 3 => False, -- Corresponding_Stub (Node3-Sem)
12769 4 => False, -- unused
12770 5 => False), -- unused
12772 N_Exception_Declaration =>
12773 (1 => True, -- Defining_Identifier (Node1)
12774 2 => False, -- unused
12775 3 => False, -- Expression (Node3-Sem)
12776 4 => False, -- unused
12777 5 => False), -- unused
12779 N_Handled_Sequence_Of_Statements =>
12780 (1 => True, -- At_End_Proc (Node1)
12781 2 => False, -- First_Real_Statement (Node2-Sem)
12782 3 => True, -- Statements (List3)
12783 4 => True, -- End_Label (Node4)
12784 5 => True), -- Exception_Handlers (List5)
12786 N_Exception_Handler =>
12787 (1 => False, -- Local_Raise_Statements (Elist1)
12788 2 => True, -- Choice_Parameter (Node2)
12789 3 => True, -- Statements (List3)
12790 4 => True, -- Exception_Choices (List4)
12791 5 => False), -- Exception_Label (Node5)
12793 N_Raise_Statement =>
12794 (1 => False, -- unused
12795 2 => True, -- Name (Node2)
12796 3 => True, -- Expression (Node3)
12797 4 => False, -- unused
12798 5 => False), -- unused
12800 N_Raise_Expression =>
12801 (1 => False, -- unused
12802 2 => True, -- Name (Node2)
12803 3 => True, -- Expression (Node3)
12804 4 => False, -- unused
12805 5 => False), -- Etype (Node5-Sem)
12807 N_Generic_Subprogram_Declaration =>
12808 (1 => True, -- Specification (Node1)
12809 2 => True, -- Generic_Formal_Declarations (List2)
12810 3 => False, -- unused
12811 4 => False, -- Parent_Spec (Node4-Sem)
12812 5 => False), -- Corresponding_Body (Node5-Sem)
12814 N_Generic_Package_Declaration =>
12815 (1 => True, -- Specification (Node1)
12816 2 => True, -- Generic_Formal_Declarations (List2)
12817 3 => False, -- Activation_Chain_Entity (Node3-Sem)
12818 4 => False, -- Parent_Spec (Node4-Sem)
12819 5 => False), -- Corresponding_Body (Node5-Sem)
12821 N_Package_Instantiation =>
12822 (1 => True, -- Defining_Unit_Name (Node1)
12823 2 => True, -- Name (Node2)
12824 3 => True, -- Generic_Associations (List3)
12825 4 => False, -- Parent_Spec (Node4-Sem)
12826 5 => False), -- Instance_Spec (Node5-Sem)
12828 N_Procedure_Instantiation =>
12829 (1 => True, -- Defining_Unit_Name (Node1)
12830 2 => True, -- Name (Node2)
12831 3 => True, -- Generic_Associations (List3)
12832 4 => False, -- Parent_Spec (Node4-Sem)
12833 5 => False), -- Instance_Spec (Node5-Sem)
12835 N_Function_Instantiation =>
12836 (1 => True, -- Defining_Unit_Name (Node1)
12837 2 => True, -- Name (Node2)
12838 3 => True, -- Generic_Associations (List3)
12839 4 => False, -- Parent_Spec (Node4-Sem)
12840 5 => False), -- Instance_Spec (Node5-Sem)
12842 N_Generic_Association =>
12843 (1 => True, -- Explicit_Generic_Actual_Parameter (Node1)
12844 2 => True, -- Selector_Name (Node2)
12845 3 => False, -- unused
12846 4 => False, -- unused
12847 5 => False), -- unused
12849 N_Formal_Object_Declaration =>
12850 (1 => True, -- Defining_Identifier (Node1)
12851 2 => False, -- unused
12852 3 => True, -- Access_Definition (Node3)
12853 4 => True, -- Subtype_Mark (Node4)
12854 5 => True), -- Default_Expression (Node5)
12856 N_Formal_Type_Declaration =>
12857 (1 => True, -- Defining_Identifier (Node1)
12858 2 => False, -- unused
12859 3 => True, -- Formal_Type_Definition (Node3)
12860 4 => True, -- Discriminant_Specifications (List4)
12861 5 => False), -- unused
12863 N_Formal_Private_Type_Definition =>
12864 (1 => False, -- unused
12865 2 => False, -- unused
12866 3 => False, -- unused
12867 4 => False, -- unused
12868 5 => False), -- unused
12870 N_Formal_Incomplete_Type_Definition =>
12871 (1 => False, -- unused
12872 2 => False, -- unused
12873 3 => False, -- unused
12874 4 => False, -- unused
12875 5 => False), -- unused
12877 N_Formal_Derived_Type_Definition =>
12878 (1 => False, -- unused
12879 2 => True, -- Interface_List (List2)
12880 3 => False, -- unused
12881 4 => True, -- Subtype_Mark (Node4)
12882 5 => False), -- unused
12884 N_Formal_Discrete_Type_Definition =>
12885 (1 => False, -- unused
12886 2 => False, -- unused
12887 3 => False, -- unused
12888 4 => False, -- unused
12889 5 => False), -- unused
12891 N_Formal_Signed_Integer_Type_Definition =>
12892 (1 => False, -- unused
12893 2 => False, -- unused
12894 3 => False, -- unused
12895 4 => False, -- unused
12896 5 => False), -- unused
12898 N_Formal_Modular_Type_Definition =>
12899 (1 => False, -- unused
12900 2 => False, -- unused
12901 3 => False, -- unused
12902 4 => False, -- unused
12903 5 => False), -- unused
12905 N_Formal_Floating_Point_Definition =>
12906 (1 => False, -- unused
12907 2 => False, -- unused
12908 3 => False, -- unused
12909 4 => False, -- unused
12910 5 => False), -- unused
12912 N_Formal_Ordinary_Fixed_Point_Definition =>
12913 (1 => False, -- unused
12914 2 => False, -- unused
12915 3 => False, -- unused
12916 4 => False, -- unused
12917 5 => False), -- unused
12919 N_Formal_Decimal_Fixed_Point_Definition =>
12920 (1 => False, -- unused
12921 2 => False, -- unused
12922 3 => False, -- unused
12923 4 => False, -- unused
12924 5 => False), -- unused
12926 N_Formal_Concrete_Subprogram_Declaration =>
12927 (1 => True, -- Specification (Node1)
12928 2 => True, -- Default_Name (Node2)
12929 3 => False, -- unused
12930 4 => False, -- unused
12931 5 => False), -- unused
12933 N_Formal_Abstract_Subprogram_Declaration =>
12934 (1 => True, -- Specification (Node1)
12935 2 => True, -- Default_Name (Node2)
12936 3 => False, -- unused
12937 4 => False, -- unused
12938 5 => False), -- unused
12940 N_Formal_Package_Declaration =>
12941 (1 => True, -- Defining_Identifier (Node1)
12942 2 => True, -- Name (Node2)
12943 3 => True, -- Generic_Associations (List3)
12944 4 => False, -- unused
12945 5 => False), -- Instance_Spec (Node5-Sem)
12947 N_Attribute_Definition_Clause =>
12948 (1 => True, -- Chars (Name1)
12949 2 => True, -- Name (Node2)
12950 3 => True, -- Expression (Node3)
12951 4 => False, -- unused
12952 5 => False), -- Next_Rep_Item (Node5-Sem)
12954 N_Aspect_Specification =>
12955 (1 => True, -- Identifier (Node1)
12956 2 => False, -- Aspect_Rep_Item (Node2-Sem)
12957 3 => True, -- Expression (Node3)
12958 4 => False, -- Entity (Node4-Sem)
12959 5 => False), -- Next_Rep_Item (Node5-Sem)
12961 N_Enumeration_Representation_Clause =>
12962 (1 => True, -- Identifier (Node1)
12963 2 => False, -- unused
12964 3 => True, -- Array_Aggregate (Node3)
12965 4 => False, -- unused
12966 5 => False), -- Next_Rep_Item (Node5-Sem)
12968 N_Record_Representation_Clause =>
12969 (1 => True, -- Identifier (Node1)
12970 2 => True, -- Mod_Clause (Node2)
12971 3 => True, -- Component_Clauses (List3)
12972 4 => False, -- unused
12973 5 => False), -- Next_Rep_Item (Node5-Sem)
12975 N_Component_Clause =>
12976 (1 => True, -- Component_Name (Node1)
12977 2 => True, -- Position (Node2)
12978 3 => True, -- First_Bit (Node3)
12979 4 => True, -- Last_Bit (Node4)
12980 5 => False), -- unused
12982 N_Code_Statement =>
12983 (1 => False, -- unused
12984 2 => False, -- unused
12985 3 => True, -- Expression (Node3)
12986 4 => False, -- unused
12987 5 => False), -- unused
12989 N_Op_Rotate_Left =>
12990 (1 => True, -- Chars (Name1)
12991 2 => True, -- Left_Opnd (Node2)
12992 3 => True, -- Right_Opnd (Node3)
12993 4 => False, -- Entity (Node4-Sem)
12994 5 => False), -- Etype (Node5-Sem)
12996 N_Op_Rotate_Right =>
12997 (1 => True, -- Chars (Name1)
12998 2 => True, -- Left_Opnd (Node2)
12999 3 => True, -- Right_Opnd (Node3)
13000 4 => False, -- Entity (Node4-Sem)
13001 5 => False), -- Etype (Node5-Sem)
13004 (1 => True, -- Chars (Name1)
13005 2 => True, -- Left_Opnd (Node2)
13006 3 => True, -- Right_Opnd (Node3)
13007 4 => False, -- Entity (Node4-Sem)
13008 5 => False), -- Etype (Node5-Sem)
13010 N_Op_Shift_Right_Arithmetic =>
13011 (1 => True, -- Chars (Name1)
13012 2 => True, -- Left_Opnd (Node2)
13013 3 => True, -- Right_Opnd (Node3)
13014 4 => False, -- Entity (Node4-Sem)
13015 5 => False), -- Etype (Node5-Sem)
13017 N_Op_Shift_Right =>
13018 (1 => True, -- Chars (Name1)
13019 2 => True, -- Left_Opnd (Node2)
13020 3 => True, -- Right_Opnd (Node3)
13021 4 => False, -- Entity (Node4-Sem)
13022 5 => False), -- Etype (Node5-Sem)
13024 N_Delta_Constraint =>
13025 (1 => False, -- unused
13026 2 => False, -- unused
13027 3 => True, -- Delta_Expression (Node3)
13028 4 => True, -- Range_Constraint (Node4)
13029 5 => False), -- unused
13032 (1 => True, -- Identifier (Node1)
13033 2 => False, -- unused
13034 3 => True, -- Expression (Node3)
13035 4 => False, -- unused
13036 5 => False), -- unused
13039 (1 => False, -- unused
13040 2 => False, -- unused
13041 3 => True, -- Expression (Node3)
13042 4 => True, -- Pragmas_Before (List4)
13043 5 => False), -- unused
13046 (1 => True, -- Expressions (List1)
13047 2 => False, -- Then_Actions (List2-Sem)
13048 3 => False, -- Else_Actions (List3-Sem)
13049 4 => False, -- unused
13050 5 => False), -- Etype (Node5-Sem)
13052 N_Compound_Statement =>
13053 (1 => True, -- Actions (List1)
13054 2 => False, -- unused
13055 3 => False, -- unused
13056 4 => False, -- unused
13057 5 => False), -- unused
13060 (1 => False, -- Pre_Post_Conditions (Node1-Sem)
13061 2 => False, -- Contract_Test_Cases (Node2-Sem)
13062 3 => False, -- Classifications (Node3-Sem)
13063 4 => False, -- unused
13064 5 => False), -- unused
13067 (1 => True, -- Chars (Name1)
13068 2 => True, -- Selector_Name (Node2)
13069 3 => True, -- Prefix (Node3)
13070 4 => False, -- Entity (Node4-Sem)
13071 5 => False), -- Etype (Node5-Sem)
13073 N_Expression_With_Actions =>
13074 (1 => True, -- Actions (List1)
13075 2 => False, -- unused
13076 3 => True, -- Expression (Node3)
13077 4 => False, -- unused
13078 5 => False), -- unused
13080 N_Free_Statement =>
13081 (1 => False, -- Storage_Pool (Node1-Sem)
13082 2 => False, -- Procedure_To_Call (Node2-Sem)
13083 3 => True, -- Expression (Node3)
13084 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
13085 5 => False), -- unused
13088 (1 => True, -- Actions (List1)
13089 2 => False, -- Access_Types_To_Process (Elist2-Sem)
13090 3 => False, -- TSS_Elist (Elist3-Sem)
13091 4 => False, -- Entity (Node4-Sem)
13092 5 => False), -- First_Subtype_Link (Node5-Sem)
13094 N_Freeze_Generic_Entity =>
13095 (1 => False, -- unused
13096 2 => False, -- unused
13097 3 => False, -- unused
13098 4 => False, -- Entity (Node4-Sem)
13099 5 => False), -- unused
13101 N_Implicit_Label_Declaration =>
13102 (1 => True, -- Defining_Identifier (Node1)
13103 2 => False, -- Label_Construct (Node2-Sem)
13104 3 => False, -- unused
13105 4 => False, -- unused
13106 5 => False), -- unused
13108 N_Itype_Reference =>
13109 (1 => False, -- Itype (Node1-Sem)
13110 2 => False, -- unused
13111 3 => False, -- unused
13112 4 => False, -- unused
13113 5 => False), -- unused
13115 N_Raise_Constraint_Error =>
13116 (1 => True, -- Condition (Node1)
13117 2 => False, -- unused
13118 3 => True, -- Reason (Uint3)
13119 4 => False, -- unused
13120 5 => False), -- Etype (Node5-Sem)
13122 N_Raise_Program_Error =>
13123 (1 => True, -- Condition (Node1)
13124 2 => False, -- unused
13125 3 => True, -- Reason (Uint3)
13126 4 => False, -- unused
13127 5 => False), -- Etype (Node5-Sem)
13129 N_Raise_Storage_Error =>
13130 (1 => True, -- Condition (Node1)
13131 2 => False, -- unused
13132 3 => True, -- Reason (Uint3)
13133 4 => False, -- unused
13134 5 => False), -- Etype (Node5-Sem)
13136 N_Push_Constraint_Error_Label =>
13137 (1 => False, -- unused
13138 2 => False, -- unused
13139 3 => False, -- unused
13140 4 => False, -- unused
13141 5 => False), -- unused
13143 N_Push_Program_Error_Label =>
13144 (1 => False, -- unused
13145 2 => False, -- unused
13146 3 => False, -- unused
13147 4 => False, -- unused
13148 5 => False), -- Exception_Label
13150 N_Push_Storage_Error_Label =>
13151 (1 => False, -- unused
13152 2 => False, -- unused
13153 3 => False, -- unused
13154 4 => False, -- unused
13155 5 => False), -- Exception_Label
13157 N_Pop_Constraint_Error_Label =>
13158 (1 => False, -- unused
13159 2 => False, -- unused
13160 3 => False, -- unused
13161 4 => False, -- unused
13162 5 => False), -- unused
13164 N_Pop_Program_Error_Label =>
13165 (1 => False, -- unused
13166 2 => False, -- unused
13167 3 => False, -- unused
13168 4 => False, -- unused
13169 5 => False), -- unused
13171 N_Pop_Storage_Error_Label =>
13172 (1 => False, -- unused
13173 2 => False, -- unused
13174 3 => False, -- unused
13175 4 => False, -- unused
13176 5 => False), -- unused
13179 (1 => False, -- unused
13180 2 => False, -- unused
13181 3 => True, -- Prefix (Node3)
13182 4 => False, -- unused
13183 5 => False), -- Etype (Node5-Sem)
13185 N_Unchecked_Expression =>
13186 (1 => False, -- unused
13187 2 => False, -- unused
13188 3 => True, -- Expression (Node3)
13189 4 => False, -- unused
13190 5 => False), -- Etype (Node5-Sem)
13192 N_Unchecked_Type_Conversion =>
13193 (1 => False, -- unused
13194 2 => False, -- unused
13195 3 => True, -- Expression (Node3)
13196 4 => True, -- Subtype_Mark (Node4)
13197 5 => False), -- Etype (Node5-Sem)
13199 N_Validate_Unchecked_Conversion =>
13200 (1 => False, -- Source_Type (Node1-Sem)
13201 2 => False, -- Target_Type (Node2-Sem)
13202 3 => False, -- unused
13203 4 => False, -- unused
13204 5 => False), -- unused
13206 -- Entries for SCIL nodes
13208 N_SCIL_Dispatch_Table_Tag_Init =>
13209 (1 => False, -- unused
13210 2 => False, -- unused
13211 3 => False, -- unused
13212 4 => False, -- SCIL_Entity (Node4-Sem)
13213 5 => False), -- unused
13215 N_SCIL_Dispatching_Call =>
13216 (1 => False, -- unused
13217 2 => False, -- SCIL_Target_Prim (Node2-Sem)
13218 3 => False, -- unused
13219 4 => False, -- SCIL_Entity (Node4-Sem)
13220 5 => False), -- SCIL_Controlling_Tag (Node5-Sem)
13222 N_SCIL_Membership_Test =>
13223 (1 => False, -- unused
13224 2 => False, -- unused
13225 3 => False, -- unused
13226 4 => False, -- SCIL_Entity (Node4-Sem)
13227 5 => False), -- SCIL_Tag_Value (Node5-Sem)
13230 (1 => False, -- Target (Node1-Sem)
13231 2 => False, -- unused
13232 3 => False, -- unused
13233 4 => False, -- unused
13234 5 => False), -- unused
13236 N_Variable_Reference_Marker =>
13237 (1 => False, -- Target (Node1-Sem)
13238 2 => False, -- unused
13239 3 => False, -- unused
13240 4 => False, -- unused
13241 5 => False), -- unused
13243 -- Entries for Empty, Error, and Unused. Even though these have a Chars
13244 -- field for debugging purposes, they are not really syntactic fields, so
13245 -- we mark all fields as unused.
13248 (1 => False, -- unused
13249 2 => False, -- unused
13250 3 => False, -- unused
13251 4 => False, -- unused
13252 5 => False), -- unused
13255 (1 => False, -- unused
13256 2 => False, -- unused
13257 3 => False, -- unused
13258 4 => False, -- unused
13259 5 => False), -- unused
13261 N_Unused_At_Start =>
13262 (1 => False, -- unused
13263 2 => False, -- unused
13264 3 => False, -- unused
13265 4 => False, -- unused
13266 5 => False), -- unused
13269 (1 => False, -- unused
13270 2 => False, -- unused
13271 3 => False, -- unused
13272 4 => False, -- unused
13273 5 => False)); -- unused
13275 --------------------
13276 -- Inline Pragmas --
13277 --------------------
13279 pragma Inline (Abort_Present);
13280 pragma Inline (Abortable_Part);
13281 pragma Inline (Abstract_Present);
13282 pragma Inline (Accept_Handler_Records);
13283 pragma Inline (Accept_Statement);
13284 pragma Inline (Access_Definition);
13285 pragma Inline (Access_To_Subprogram_Definition);
13286 pragma Inline (Access_Types_To_Process);
13287 pragma Inline (Actions);
13288 pragma Inline (Activation_Chain_Entity);
13289 pragma Inline (Acts_As_Spec);
13290 pragma Inline (Actual_Designated_Subtype);
13291 pragma Inline (Address_Warning_Posted);
13292 pragma Inline (Aggregate_Bounds);
13293 pragma Inline (Aliased_Present);
13294 pragma Inline (Alloc_For_BIP_Return);
13295 pragma Inline (All_Others);
13296 pragma Inline (All_Present);
13297 pragma Inline (Alternatives);
13298 pragma Inline (Ancestor_Part);
13299 pragma Inline (Atomic_Sync_Required);
13300 pragma Inline (Array_Aggregate);
13301 pragma Inline (Aspect_Rep_Item);
13302 pragma Inline (Assignment_OK);
13303 pragma Inline (Associated_Node);
13304 pragma Inline (At_End_Proc);
13305 pragma Inline (Attribute_Name);
13306 pragma Inline (Aux_Decls_Node);
13307 pragma Inline (Backwards_OK);
13308 pragma Inline (Bad_Is_Detected);
13309 pragma Inline (Body_To_Inline);
13310 pragma Inline (Body_Required);
13311 pragma Inline (By_Ref);
13312 pragma Inline (Box_Present);
13313 pragma Inline (Char_Literal_Value);
13314 pragma Inline (Chars);
13315 pragma Inline (Check_Address_Alignment);
13316 pragma Inline (Choice_Parameter);
13317 pragma Inline (Choices);
13318 pragma Inline (Class_Present);
13319 pragma Inline (Classifications);
13320 pragma Inline (Cleanup_Actions);
13321 pragma Inline (Comes_From_Extended_Return_Statement);
13322 pragma Inline (Compile_Time_Known_Aggregate);
13323 pragma Inline (Component_Associations);
13324 pragma Inline (Component_Clauses);
13325 pragma Inline (Component_Definition);
13326 pragma Inline (Component_Items);
13327 pragma Inline (Component_List);
13328 pragma Inline (Component_Name);
13329 pragma Inline (Componentwise_Assignment);
13330 pragma Inline (Condition);
13331 pragma Inline (Condition_Actions);
13332 pragma Inline (Config_Pragmas);
13333 pragma Inline (Constant_Present);
13334 pragma Inline (Constraint);
13335 pragma Inline (Constraints);
13336 pragma Inline (Context_Installed);
13337 pragma Inline (Context_Items);
13338 pragma Inline (Context_Pending);
13339 pragma Inline (Contract_Test_Cases);
13340 pragma Inline (Controlling_Argument);
13341 pragma Inline (Convert_To_Return_False);
13342 pragma Inline (Conversion_OK);
13343 pragma Inline (Corresponding_Aspect);
13344 pragma Inline (Corresponding_Body);
13345 pragma Inline (Corresponding_Formal_Spec);
13346 pragma Inline (Corresponding_Generic_Association);
13347 pragma Inline (Corresponding_Integer_Value);
13348 pragma Inline (Corresponding_Spec);
13349 pragma Inline (Corresponding_Spec_Of_Stub);
13350 pragma Inline (Corresponding_Stub);
13351 pragma Inline (Dcheck_Function);
13352 pragma Inline (Declarations);
13353 pragma Inline (Default_Expression);
13354 pragma Inline (Default_Storage_Pool);
13355 pragma Inline (Default_Name);
13356 pragma Inline (Defining_Identifier);
13357 pragma Inline (Defining_Unit_Name);
13358 pragma Inline (Delay_Alternative);
13359 pragma Inline (Delay_Statement);
13360 pragma Inline (Delta_Expression);
13361 pragma Inline (Digits_Expression);
13362 pragma Inline (Discr_Check_Funcs_Built);
13363 pragma Inline (Discrete_Choices);
13364 pragma Inline (Discrete_Range);
13365 pragma Inline (Discrete_Subtype_Definition);
13366 pragma Inline (Discrete_Subtype_Definitions);
13367 pragma Inline (Discriminant_Specifications);
13368 pragma Inline (Discriminant_Type);
13369 pragma Inline (Do_Accessibility_Check);
13370 pragma Inline (Do_Discriminant_Check);
13371 pragma Inline (Do_Length_Check);
13372 pragma Inline (Do_Division_Check);
13373 pragma Inline (Do_Overflow_Check);
13374 pragma Inline (Do_Range_Check);
13375 pragma Inline (Do_Storage_Check);
13376 pragma Inline (Do_Tag_Check);
13377 pragma Inline (Elaborate_All_Desirable);
13378 pragma Inline (Elaborate_All_Present);
13379 pragma Inline (Elaborate_Desirable);
13380 pragma Inline (Elaborate_Present);
13381 pragma Inline (Else_Actions);
13382 pragma Inline (Else_Statements);
13383 pragma Inline (Elsif_Parts);
13384 pragma Inline (Enclosing_Variant);
13385 pragma Inline (End_Label);
13386 pragma Inline (End_Span);
13387 pragma Inline (Entity);
13388 pragma Inline (Entity_Or_Associated_Node);
13389 pragma Inline (Entry_Body_Formal_Part);
13390 pragma Inline (Entry_Call_Alternative);
13391 pragma Inline (Entry_Call_Statement);
13392 pragma Inline (Entry_Direct_Name);
13393 pragma Inline (Entry_Index);
13394 pragma Inline (Entry_Index_Specification);
13395 pragma Inline (Etype);
13396 pragma Inline (Exception_Choices);
13397 pragma Inline (Exception_Handlers);
13398 pragma Inline (Exception_Junk);
13399 pragma Inline (Exception_Label);
13400 pragma Inline (Expansion_Delayed);
13401 pragma Inline (Explicit_Actual_Parameter);
13402 pragma Inline (Explicit_Generic_Actual_Parameter);
13403 pragma Inline (Expression);
13404 pragma Inline (Expression_Copy);
13405 pragma Inline (Expressions);
13406 pragma Inline (First_Bit);
13407 pragma Inline (First_Inlined_Subprogram);
13408 pragma Inline (First_Name);
13409 pragma Inline (First_Named_Actual);
13410 pragma Inline (First_Real_Statement);
13411 pragma Inline (First_Subtype_Link);
13412 pragma Inline (Float_Truncate);
13413 pragma Inline (Formal_Type_Definition);
13414 pragma Inline (Forwards_OK);
13415 pragma Inline (From_Aspect_Specification);
13416 pragma Inline (From_At_End);
13417 pragma Inline (From_At_Mod);
13418 pragma Inline (From_Conditional_Expression);
13419 pragma Inline (From_Default);
13420 pragma Inline (Generalized_Indexing);
13421 pragma Inline (Generic_Associations);
13422 pragma Inline (Generic_Formal_Declarations);
13423 pragma Inline (Generic_Parent);
13424 pragma Inline (Generic_Parent_Type);
13425 pragma Inline (Handled_Statement_Sequence);
13426 pragma Inline (Handler_List_Entry);
13427 pragma Inline (Has_Created_Identifier);
13428 pragma Inline (Has_Dereference_Action);
13429 pragma Inline (Has_Dynamic_Length_Check);
13430 pragma Inline (Has_Dynamic_Range_Check);
13431 pragma Inline (Has_Init_Expression);
13432 pragma Inline (Has_Local_Raise);
13433 pragma Inline (Has_Self_Reference);
13434 pragma Inline (Has_SP_Choice);
13435 pragma Inline (Has_No_Elaboration_Code);
13436 pragma Inline (Has_Pragma_Suppress_All);
13437 pragma Inline (Has_Private_View);
13438 pragma Inline (Has_Relative_Deadline_Pragma);
13439 pragma Inline (Has_Storage_Size_Pragma);
13440 pragma Inline (Has_Target_Names);
13441 pragma Inline (Has_Wide_Character);
13442 pragma Inline (Has_Wide_Wide_Character);
13443 pragma Inline (Header_Size_Added);
13444 pragma Inline (Hidden_By_Use_Clause);
13445 pragma Inline (High_Bound);
13446 pragma Inline (Identifier);
13447 pragma Inline (Implicit_With);
13448 pragma Inline (Interface_List);
13449 pragma Inline (Interface_Present);
13450 pragma Inline (Includes_Infinities);
13451 pragma Inline (Import_Interface_Present);
13452 pragma Inline (In_Present);
13453 pragma Inline (Incomplete_View);
13454 pragma Inline (Inherited_Discriminant);
13455 pragma Inline (Instance_Spec);
13456 pragma Inline (Intval);
13457 pragma Inline (Iterator_Specification);
13458 pragma Inline (Is_Abort_Block);
13459 pragma Inline (Is_Accessibility_Actual);
13460 pragma Inline (Is_Analyzed_Pragma);
13461 pragma Inline (Is_Asynchronous_Call_Block);
13462 pragma Inline (Is_Boolean_Aspect);
13463 pragma Inline (Is_Checked);
13464 pragma Inline (Is_Checked_Ghost_Pragma);
13465 pragma Inline (Is_Component_Left_Opnd);
13466 pragma Inline (Is_Component_Right_Opnd);
13467 pragma Inline (Is_Controlling_Actual);
13468 pragma Inline (Is_Declaration_Level_Node);
13469 pragma Inline (Is_Delayed_Aspect);
13470 pragma Inline (Is_Disabled);
13471 pragma Inline (Is_Dispatching_Call);
13472 pragma Inline (Is_Dynamic_Coextension);
13473 pragma Inline (Is_Effective_Use_Clause);
13474 pragma Inline (Is_Elaboration_Checks_OK_Node);
13475 pragma Inline (Is_Elaboration_Code);
13476 pragma Inline (Is_Elaboration_Warnings_OK_Node);
13477 pragma Inline (Is_Elsif);
13478 pragma Inline (Is_Entry_Barrier_Function);
13479 pragma Inline (Is_Expanded_Build_In_Place_Call);
13480 pragma Inline (Is_Expanded_Contract);
13481 pragma Inline (Is_Finalization_Wrapper);
13482 pragma Inline (Is_Folded_In_Parser);
13483 pragma Inline (Is_Generic_Contract_Pragma);
13484 pragma Inline (Is_Ignored);
13485 pragma Inline (Is_Ignored_Ghost_Pragma);
13486 pragma Inline (Is_In_Discriminant_Check);
13487 pragma Inline (Is_Inherited_Pragma);
13488 pragma Inline (Is_Initialization_Block);
13489 pragma Inline (Is_Known_Guaranteed_ABE);
13490 pragma Inline (Is_Machine_Number);
13491 pragma Inline (Is_Null_Loop);
13492 pragma Inline (Is_OpenAcc_Environment);
13493 pragma Inline (Is_OpenAcc_Loop);
13494 pragma Inline (Is_Overloaded);
13495 pragma Inline (Is_Power_Of_2_For_Shift);
13496 pragma Inline (Is_Prefixed_Call);
13497 pragma Inline (Is_Protected_Subprogram_Body);
13498 pragma Inline (Is_Qualified_Universal_Literal);
13499 pragma Inline (Is_Read);
13500 pragma Inline (Is_Source_Call);
13501 pragma Inline (Is_SPARK_Mode_On_Node);
13502 pragma Inline (Is_Static_Coextension);
13503 pragma Inline (Is_Static_Expression);
13504 pragma Inline (Is_Subprogram_Descriptor);
13505 pragma Inline (Is_Task_Allocation_Block);
13506 pragma Inline (Is_Task_Body_Procedure);
13507 pragma Inline (Is_Task_Master);
13508 pragma Inline (Is_Write);
13509 pragma Inline (Iteration_Scheme);
13510 pragma Inline (Itype);
13511 pragma Inline (Kill_Range_Check);
13512 pragma Inline (Last_Bit);
13513 pragma Inline (Last_Name);
13514 pragma Inline (Library_Unit);
13515 pragma Inline (Label_Construct);
13516 pragma Inline (Left_Opnd);
13517 pragma Inline (Limited_View_Installed);
13518 pragma Inline (Limited_Present);
13519 pragma Inline (Literals);
13520 pragma Inline (Local_Raise_Not_OK);
13521 pragma Inline (Local_Raise_Statements);
13522 pragma Inline (Loop_Actions);
13523 pragma Inline (Loop_Parameter_Specification);
13524 pragma Inline (Low_Bound);
13525 pragma Inline (Mod_Clause);
13526 pragma Inline (More_Ids);
13527 pragma Inline (Must_Be_Byte_Aligned);
13528 pragma Inline (Must_Not_Freeze);
13529 pragma Inline (Must_Not_Override);
13530 pragma Inline (Must_Override);
13531 pragma Inline (Name);
13532 pragma Inline (Names);
13533 pragma Inline (Next_Entity);
13534 pragma Inline (Next_Exit_Statement);
13535 pragma Inline (Next_Implicit_With);
13536 pragma Inline (Next_Named_Actual);
13537 pragma Inline (Next_Pragma);
13538 pragma Inline (Next_Rep_Item);
13539 pragma Inline (Next_Use_Clause);
13540 pragma Inline (No_Ctrl_Actions);
13541 pragma Inline (No_Elaboration_Check);
13542 pragma Inline (No_Entities_Ref_In_Spec);
13543 pragma Inline (No_Initialization);
13544 pragma Inline (No_Minimize_Eliminate);
13545 pragma Inline (No_Side_Effect_Removal);
13546 pragma Inline (No_Truncation);
13547 pragma Inline (Null_Excluding_Subtype);
13548 pragma Inline (Null_Exclusion_Present);
13549 pragma Inline (Null_Exclusion_In_Return_Present);
13550 pragma Inline (Null_Present);
13551 pragma Inline (Null_Record_Present);
13552 pragma Inline (Null_Statement);
13553 pragma Inline (Object_Definition);
13554 pragma Inline (Of_Present);
13555 pragma Inline (Original_Discriminant);
13556 pragma Inline (Original_Entity);
13557 pragma Inline (Others_Discrete_Choices);
13558 pragma Inline (Out_Present);
13559 pragma Inline (Parameter_Associations);
13560 pragma Inline (Parameter_Specifications);
13561 pragma Inline (Parameter_Type);
13562 pragma Inline (Parent_Spec);
13563 pragma Inline (Parent_With);
13564 pragma Inline (Position);
13565 pragma Inline (Pragma_Argument_Associations);
13566 pragma Inline (Pragma_Identifier);
13567 pragma Inline (Pragmas_After);
13568 pragma Inline (Pragmas_Before);
13569 pragma Inline (Pre_Post_Conditions);
13570 pragma Inline (Prefix);
13571 pragma Inline (Premature_Use);
13572 pragma Inline (Present_Expr);
13573 pragma Inline (Prev_Ids);
13574 pragma Inline (Prev_Use_Clause);
13575 pragma Inline (Print_In_Hex);
13576 pragma Inline (Private_Declarations);
13577 pragma Inline (Private_Present);
13578 pragma Inline (Procedure_To_Call);
13579 pragma Inline (Proper_Body);
13580 pragma Inline (Protected_Definition);
13581 pragma Inline (Protected_Present);
13582 pragma Inline (Raises_Constraint_Error);
13583 pragma Inline (Range_Constraint);
13584 pragma Inline (Range_Expression);
13585 pragma Inline (Real_Range_Specification);
13586 pragma Inline (Realval);
13587 pragma Inline (Reason);
13588 pragma Inline (Record_Extension_Part);
13589 pragma Inline (Redundant_Use);
13590 pragma Inline (Renaming_Exception);
13591 pragma Inline (Result_Definition);
13592 pragma Inline (Return_Object_Declarations);
13593 pragma Inline (Return_Statement_Entity);
13594 pragma Inline (Reverse_Present);
13595 pragma Inline (Right_Opnd);
13596 pragma Inline (Rounded_Result);
13597 pragma Inline (Save_Invocation_Graph_Of_Body);
13598 pragma Inline (SCIL_Controlling_Tag);
13599 pragma Inline (SCIL_Entity);
13600 pragma Inline (SCIL_Tag_Value);
13601 pragma Inline (SCIL_Target_Prim);
13602 pragma Inline (Scope);
13603 pragma Inline (Select_Alternatives);
13604 pragma Inline (Selector_Name);
13605 pragma Inline (Selector_Names);
13606 pragma Inline (Shift_Count_OK);
13607 pragma Inline (Source_Type);
13608 pragma Inline (Specification);
13609 pragma Inline (Split_PPC);
13610 pragma Inline (Statements);
13611 pragma Inline (Storage_Pool);
13612 pragma Inline (Subpool_Handle_Name);
13613 pragma Inline (Strval);
13614 pragma Inline (Subtype_Indication);
13615 pragma Inline (Subtype_Mark);
13616 pragma Inline (Subtype_Marks);
13617 pragma Inline (Suppress_Assignment_Checks);
13618 pragma Inline (Suppress_Loop_Warnings);
13619 pragma Inline (Synchronized_Present);
13620 pragma Inline (Tagged_Present);
13621 pragma Inline (Target);
13622 pragma Inline (Target_Type);
13623 pragma Inline (Task_Definition);
13624 pragma Inline (Task_Present);
13625 pragma Inline (Then_Actions);
13626 pragma Inline (Then_Statements);
13627 pragma Inline (Triggering_Alternative);
13628 pragma Inline (Triggering_Statement);
13629 pragma Inline (Treat_Fixed_As_Integer);
13630 pragma Inline (TSS_Elist);
13631 pragma Inline (Type_Definition);
13632 pragma Inline (Uneval_Old_Accept);
13633 pragma Inline (Uneval_Old_Warn);
13634 pragma Inline (Unit);
13635 pragma Inline (Uninitialized_Variable);
13636 pragma Inline (Unknown_Discriminants_Present);
13637 pragma Inline (Unreferenced_In_Spec);
13638 pragma Inline (Variant_Part);
13639 pragma Inline (Variants);
13640 pragma Inline (Visible_Declarations);
13641 pragma Inline (Used_Operations);
13642 pragma Inline (Was_Attribute_Reference);
13643 pragma Inline (Was_Expression_Function);
13644 pragma Inline (Was_Originally_Stub);
13646 pragma Inline (Set_Abort_Present);
13647 pragma Inline (Set_Abortable_Part);
13648 pragma Inline (Set_Abstract_Present);
13649 pragma Inline (Set_Accept_Handler_Records);
13650 pragma Inline (Set_Accept_Statement);
13651 pragma Inline (Set_Access_Definition);
13652 pragma Inline (Set_Access_To_Subprogram_Definition);
13653 pragma Inline (Set_Access_Types_To_Process);
13654 pragma Inline (Set_Actions);
13655 pragma Inline (Set_Activation_Chain_Entity);
13656 pragma Inline (Set_Acts_As_Spec);
13657 pragma Inline (Set_Actual_Designated_Subtype);
13658 pragma Inline (Set_Address_Warning_Posted);
13659 pragma Inline (Set_Aggregate_Bounds);
13660 pragma Inline (Set_Aliased_Present);
13661 pragma Inline (Set_Alloc_For_BIP_Return);
13662 pragma Inline (Set_All_Others);
13663 pragma Inline (Set_All_Present);
13664 pragma Inline (Set_Alternatives);
13665 pragma Inline (Set_Ancestor_Part);
13666 pragma Inline (Set_Array_Aggregate);
13667 pragma Inline (Set_Aspect_Rep_Item);
13668 pragma Inline (Set_Assignment_OK);
13669 pragma Inline (Set_Associated_Node);
13670 pragma Inline (Set_At_End_Proc);
13671 pragma Inline (Set_Atomic_Sync_Required);
13672 pragma Inline (Set_Attribute_Name);
13673 pragma Inline (Set_Aux_Decls_Node);
13674 pragma Inline (Set_Backwards_OK);
13675 pragma Inline (Set_Bad_Is_Detected);
13676 pragma Inline (Set_Body_Required);
13677 pragma Inline (Set_Body_To_Inline);
13678 pragma Inline (Set_Box_Present);
13679 pragma Inline (Set_By_Ref);
13680 pragma Inline (Set_Char_Literal_Value);
13681 pragma Inline (Set_Chars);
13682 pragma Inline (Set_Check_Address_Alignment);
13683 pragma Inline (Set_Choice_Parameter);
13684 pragma Inline (Set_Choices);
13685 pragma Inline (Set_Class_Present);
13686 pragma Inline (Set_Classifications);
13687 pragma Inline (Set_Cleanup_Actions);
13688 pragma Inline (Set_Comes_From_Extended_Return_Statement);
13689 pragma Inline (Set_Compile_Time_Known_Aggregate);
13690 pragma Inline (Set_Component_Associations);
13691 pragma Inline (Set_Component_Clauses);
13692 pragma Inline (Set_Component_Definition);
13693 pragma Inline (Set_Component_Items);
13694 pragma Inline (Set_Component_List);
13695 pragma Inline (Set_Component_Name);
13696 pragma Inline (Set_Componentwise_Assignment);
13697 pragma Inline (Set_Condition);
13698 pragma Inline (Set_Condition_Actions);
13699 pragma Inline (Set_Config_Pragmas);
13700 pragma Inline (Set_Constant_Present);
13701 pragma Inline (Set_Constraint);
13702 pragma Inline (Set_Constraints);
13703 pragma Inline (Set_Context_Installed);
13704 pragma Inline (Set_Context_Items);
13705 pragma Inline (Set_Context_Pending);
13706 pragma Inline (Set_Contract_Test_Cases);
13707 pragma Inline (Set_Controlling_Argument);
13708 pragma Inline (Set_Conversion_OK);
13709 pragma Inline (Set_Convert_To_Return_False);
13710 pragma Inline (Set_Corresponding_Aspect);
13711 pragma Inline (Set_Corresponding_Body);
13712 pragma Inline (Set_Corresponding_Formal_Spec);
13713 pragma Inline (Set_Corresponding_Generic_Association);
13714 pragma Inline (Set_Corresponding_Integer_Value);
13715 pragma Inline (Set_Corresponding_Spec);
13716 pragma Inline (Set_Corresponding_Spec_Of_Stub);
13717 pragma Inline (Set_Corresponding_Stub);
13718 pragma Inline (Set_Dcheck_Function);
13719 pragma Inline (Set_Declarations);
13720 pragma Inline (Set_Default_Expression);
13721 pragma Inline (Set_Default_Name);
13722 pragma Inline (Set_Default_Storage_Pool);
13723 pragma Inline (Set_Defining_Identifier);
13724 pragma Inline (Set_Defining_Unit_Name);
13725 pragma Inline (Set_Delay_Alternative);
13726 pragma Inline (Set_Delay_Statement);
13727 pragma Inline (Set_Delta_Expression);
13728 pragma Inline (Set_Digits_Expression);
13729 pragma Inline (Set_Discr_Check_Funcs_Built);
13730 pragma Inline (Set_Discrete_Choices);
13731 pragma Inline (Set_Discrete_Range);
13732 pragma Inline (Set_Discrete_Subtype_Definition);
13733 pragma Inline (Set_Discrete_Subtype_Definitions);
13734 pragma Inline (Set_Discriminant_Specifications);
13735 pragma Inline (Set_Discriminant_Type);
13736 pragma Inline (Set_Do_Accessibility_Check);
13737 pragma Inline (Set_Do_Discriminant_Check);
13738 pragma Inline (Set_Do_Division_Check);
13739 pragma Inline (Set_Do_Length_Check);
13740 pragma Inline (Set_Do_Overflow_Check);
13741 pragma Inline (Set_Do_Range_Check);
13742 pragma Inline (Set_Do_Storage_Check);
13743 pragma Inline (Set_Do_Tag_Check);
13744 pragma Inline (Set_Elaborate_All_Desirable);
13745 pragma Inline (Set_Elaborate_All_Present);
13746 pragma Inline (Set_Elaborate_Desirable);
13747 pragma Inline (Set_Elaborate_Present);
13748 pragma Inline (Set_Else_Actions);
13749 pragma Inline (Set_Else_Statements);
13750 pragma Inline (Set_Elsif_Parts);
13751 pragma Inline (Set_Enclosing_Variant);
13752 pragma Inline (Set_End_Label);
13753 pragma Inline (Set_End_Span);
13754 pragma Inline (Set_Entity);
13755 pragma Inline (Set_Entry_Body_Formal_Part);
13756 pragma Inline (Set_Entry_Call_Alternative);
13757 pragma Inline (Set_Entry_Call_Statement);
13758 pragma Inline (Set_Entry_Direct_Name);
13759 pragma Inline (Set_Entry_Index);
13760 pragma Inline (Set_Entry_Index_Specification);
13761 pragma Inline (Set_Etype);
13762 pragma Inline (Set_Exception_Choices);
13763 pragma Inline (Set_Exception_Handlers);
13764 pragma Inline (Set_Exception_Junk);
13765 pragma Inline (Set_Exception_Label);
13766 pragma Inline (Set_Expansion_Delayed);
13767 pragma Inline (Set_Explicit_Actual_Parameter);
13768 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
13769 pragma Inline (Set_Expression);
13770 pragma Inline (Set_Expression_Copy);
13771 pragma Inline (Set_Expressions);
13772 pragma Inline (Set_First_Bit);
13773 pragma Inline (Set_First_Inlined_Subprogram);
13774 pragma Inline (Set_First_Name);
13775 pragma Inline (Set_First_Named_Actual);
13776 pragma Inline (Set_First_Real_Statement);
13777 pragma Inline (Set_First_Subtype_Link);
13778 pragma Inline (Set_Float_Truncate);
13779 pragma Inline (Set_Formal_Type_Definition);
13780 pragma Inline (Set_Forwards_OK);
13781 pragma Inline (Set_From_Aspect_Specification);
13782 pragma Inline (Set_From_At_End);
13783 pragma Inline (Set_From_At_Mod);
13784 pragma Inline (Set_From_Conditional_Expression);
13785 pragma Inline (Set_From_Default);
13786 pragma Inline (Set_Generalized_Indexing);
13787 pragma Inline (Set_Generic_Associations);
13788 pragma Inline (Set_Generic_Formal_Declarations);
13789 pragma Inline (Set_Generic_Parent);
13790 pragma Inline (Set_Generic_Parent_Type);
13791 pragma Inline (Set_Handled_Statement_Sequence);
13792 pragma Inline (Set_Handler_List_Entry);
13793 pragma Inline (Set_Has_Created_Identifier);
13794 pragma Inline (Set_Has_Dereference_Action);
13795 pragma Inline (Set_Has_Dynamic_Length_Check);
13796 pragma Inline (Set_Has_Dynamic_Range_Check);
13797 pragma Inline (Set_Has_Init_Expression);
13798 pragma Inline (Set_Has_Local_Raise);
13799 pragma Inline (Set_Has_No_Elaboration_Code);
13800 pragma Inline (Set_Has_Pragma_Suppress_All);
13801 pragma Inline (Set_Has_Private_View);
13802 pragma Inline (Set_Has_Relative_Deadline_Pragma);
13803 pragma Inline (Set_Has_Self_Reference);
13804 pragma Inline (Set_Has_SP_Choice);
13805 pragma Inline (Set_Has_Storage_Size_Pragma);
13806 pragma Inline (Set_Has_Target_Names);
13807 pragma Inline (Set_Has_Wide_Character);
13808 pragma Inline (Set_Has_Wide_Wide_Character);
13809 pragma Inline (Set_Header_Size_Added);
13810 pragma Inline (Set_Hidden_By_Use_Clause);
13811 pragma Inline (Set_High_Bound);
13812 pragma Inline (Set_Identifier);
13813 pragma Inline (Set_Implicit_With);
13814 pragma Inline (Set_Import_Interface_Present);
13815 pragma Inline (Set_In_Present);
13816 pragma Inline (Set_Includes_Infinities);
13817 pragma Inline (Set_Incomplete_View);
13818 pragma Inline (Set_Inherited_Discriminant);
13819 pragma Inline (Set_Instance_Spec);
13820 pragma Inline (Set_Interface_List);
13821 pragma Inline (Set_Interface_Present);
13822 pragma Inline (Set_Intval);
13823 pragma Inline (Set_Is_Abort_Block);
13824 pragma Inline (Set_Is_Accessibility_Actual);
13825 pragma Inline (Set_Is_Analyzed_Pragma);
13826 pragma Inline (Set_Is_Asynchronous_Call_Block);
13827 pragma Inline (Set_Is_Boolean_Aspect);
13828 pragma Inline (Set_Is_Checked);
13829 pragma Inline (Set_Is_Checked_Ghost_Pragma);
13830 pragma Inline (Set_Is_Component_Left_Opnd);
13831 pragma Inline (Set_Is_Component_Right_Opnd);
13832 pragma Inline (Set_Is_Controlling_Actual);
13833 pragma Inline (Set_Is_Declaration_Level_Node);
13834 pragma Inline (Set_Is_Delayed_Aspect);
13835 pragma Inline (Set_Is_Disabled);
13836 pragma Inline (Set_Is_Dispatching_Call);
13837 pragma Inline (Set_Is_Dynamic_Coextension);
13838 pragma Inline (Set_Is_Effective_Use_Clause);
13839 pragma Inline (Set_Is_Elaboration_Checks_OK_Node);
13840 pragma Inline (Set_Is_Elaboration_Code);
13841 pragma Inline (Set_Is_Elaboration_Warnings_OK_Node);
13842 pragma Inline (Set_Is_Elsif);
13843 pragma Inline (Set_Is_Entry_Barrier_Function);
13844 pragma Inline (Set_Is_Expanded_Build_In_Place_Call);
13845 pragma Inline (Set_Is_Expanded_Contract);
13846 pragma Inline (Set_Is_Finalization_Wrapper);
13847 pragma Inline (Set_Is_Folded_In_Parser);
13848 pragma Inline (Set_Is_Generic_Contract_Pragma);
13849 pragma Inline (Set_Is_Ignored);
13850 pragma Inline (Set_Is_Ignored_Ghost_Pragma);
13851 pragma Inline (Set_Is_In_Discriminant_Check);
13852 pragma Inline (Set_Is_Inherited_Pragma);
13853 pragma Inline (Set_Is_Initialization_Block);
13854 pragma Inline (Set_Is_Known_Guaranteed_ABE);
13855 pragma Inline (Set_Is_Machine_Number);
13856 pragma Inline (Set_Is_Null_Loop);
13857 pragma Inline (Set_Is_OpenAcc_Environment);
13858 pragma Inline (Set_Is_OpenAcc_Loop);
13859 pragma Inline (Set_Is_Overloaded);
13860 pragma Inline (Set_Is_Power_Of_2_For_Shift);
13861 pragma Inline (Set_Is_Prefixed_Call);
13862 pragma Inline (Set_Is_Protected_Subprogram_Body);
13863 pragma Inline (Set_Is_Qualified_Universal_Literal);
13864 pragma Inline (Set_Is_Read);
13865 pragma Inline (Set_Is_Source_Call);
13866 pragma Inline (Set_Is_SPARK_Mode_On_Node);
13867 pragma Inline (Set_Is_Static_Coextension);
13868 pragma Inline (Set_Is_Static_Expression);
13869 pragma Inline (Set_Is_Subprogram_Descriptor);
13870 pragma Inline (Set_Is_Task_Allocation_Block);
13871 pragma Inline (Set_Is_Task_Body_Procedure);
13872 pragma Inline (Set_Is_Task_Master);
13873 pragma Inline (Set_Is_Write);
13874 pragma Inline (Set_Iteration_Scheme);
13875 pragma Inline (Set_Iterator_Specification);
13876 pragma Inline (Set_Itype);
13877 pragma Inline (Set_Kill_Range_Check);
13878 pragma Inline (Set_Label_Construct);
13879 pragma Inline (Set_Last_Bit);
13880 pragma Inline (Set_Last_Name);
13881 pragma Inline (Set_Left_Opnd);
13882 pragma Inline (Set_Library_Unit);
13883 pragma Inline (Set_Limited_Present);
13884 pragma Inline (Set_Limited_View_Installed);
13885 pragma Inline (Set_Literals);
13886 pragma Inline (Set_Local_Raise_Not_OK);
13887 pragma Inline (Set_Local_Raise_Statements);
13888 pragma Inline (Set_Loop_Actions);
13889 pragma Inline (Set_Loop_Parameter_Specification);
13890 pragma Inline (Set_Low_Bound);
13891 pragma Inline (Set_Mod_Clause);
13892 pragma Inline (Set_More_Ids);
13893 pragma Inline (Set_Must_Be_Byte_Aligned);
13894 pragma Inline (Set_Must_Not_Freeze);
13895 pragma Inline (Set_Must_Not_Override);
13896 pragma Inline (Set_Must_Override);
13897 pragma Inline (Set_Name);
13898 pragma Inline (Set_Names);
13899 pragma Inline (Set_Next_Entity);
13900 pragma Inline (Set_Next_Exit_Statement);
13901 pragma Inline (Set_Next_Implicit_With);
13902 pragma Inline (Set_Next_Named_Actual);
13903 pragma Inline (Set_Next_Pragma);
13904 pragma Inline (Set_Next_Rep_Item);
13905 pragma Inline (Set_Next_Use_Clause);
13906 pragma Inline (Set_No_Ctrl_Actions);
13907 pragma Inline (Set_No_Elaboration_Check);
13908 pragma Inline (Set_No_Entities_Ref_In_Spec);
13909 pragma Inline (Set_No_Initialization);
13910 pragma Inline (Set_No_Minimize_Eliminate);
13911 pragma Inline (Set_No_Side_Effect_Removal);
13912 pragma Inline (Set_No_Truncation);
13913 pragma Inline (Set_Null_Excluding_Subtype);
13914 pragma Inline (Set_Null_Exclusion_Present);
13915 pragma Inline (Set_Null_Exclusion_In_Return_Present);
13916 pragma Inline (Set_Null_Present);
13917 pragma Inline (Set_Null_Record_Present);
13918 pragma Inline (Set_Null_Statement);
13919 pragma Inline (Set_Object_Definition);
13920 pragma Inline (Set_Of_Present);
13921 pragma Inline (Set_Original_Discriminant);
13922 pragma Inline (Set_Original_Entity);
13923 pragma Inline (Set_Others_Discrete_Choices);
13924 pragma Inline (Set_Out_Present);
13925 pragma Inline (Set_Parameter_Associations);
13926 pragma Inline (Set_Parameter_Specifications);
13927 pragma Inline (Set_Parameter_Type);
13928 pragma Inline (Set_Parent_Spec);
13929 pragma Inline (Set_Parent_With);
13930 pragma Inline (Set_Position);
13931 pragma Inline (Set_Pragma_Argument_Associations);
13932 pragma Inline (Set_Pragma_Identifier);
13933 pragma Inline (Set_Pragmas_After);
13934 pragma Inline (Set_Pragmas_Before);
13935 pragma Inline (Set_Pre_Post_Conditions);
13936 pragma Inline (Set_Prefix);
13937 pragma Inline (Set_Premature_Use);
13938 pragma Inline (Set_Present_Expr);
13939 pragma Inline (Set_Prev_Ids);
13940 pragma Inline (Set_Prev_Use_Clause);
13941 pragma Inline (Set_Print_In_Hex);
13942 pragma Inline (Set_Private_Declarations);
13943 pragma Inline (Set_Private_Present);
13944 pragma Inline (Set_Procedure_To_Call);
13945 pragma Inline (Set_Proper_Body);
13946 pragma Inline (Set_Protected_Definition);
13947 pragma Inline (Set_Protected_Present);
13948 pragma Inline (Set_Raises_Constraint_Error);
13949 pragma Inline (Set_Range_Constraint);
13950 pragma Inline (Set_Range_Expression);
13951 pragma Inline (Set_Real_Range_Specification);
13952 pragma Inline (Set_Realval);
13953 pragma Inline (Set_Reason);
13954 pragma Inline (Set_Record_Extension_Part);
13955 pragma Inline (Set_Redundant_Use);
13956 pragma Inline (Set_Renaming_Exception);
13957 pragma Inline (Set_Result_Definition);
13958 pragma Inline (Set_Return_Object_Declarations);
13959 pragma Inline (Set_Reverse_Present);
13960 pragma Inline (Set_Right_Opnd);
13961 pragma Inline (Set_Rounded_Result);
13962 pragma Inline (Set_Save_Invocation_Graph_Of_Body);
13963 pragma Inline (Set_SCIL_Controlling_Tag);
13964 pragma Inline (Set_SCIL_Entity);
13965 pragma Inline (Set_SCIL_Tag_Value);
13966 pragma Inline (Set_SCIL_Target_Prim);
13967 pragma Inline (Set_Scope);
13968 pragma Inline (Set_Select_Alternatives);
13969 pragma Inline (Set_Selector_Name);
13970 pragma Inline (Set_Selector_Names);
13971 pragma Inline (Set_Shift_Count_OK);
13972 pragma Inline (Set_Source_Type);
13973 pragma Inline (Set_Split_PPC);
13974 pragma Inline (Set_Statements);
13975 pragma Inline (Set_Storage_Pool);
13976 pragma Inline (Set_Strval);
13977 pragma Inline (Set_Subpool_Handle_Name);
13978 pragma Inline (Set_Subtype_Indication);
13979 pragma Inline (Set_Subtype_Mark);
13980 pragma Inline (Set_Subtype_Marks);
13981 pragma Inline (Set_Suppress_Assignment_Checks);
13982 pragma Inline (Set_Suppress_Loop_Warnings);
13983 pragma Inline (Set_Synchronized_Present);
13984 pragma Inline (Set_TSS_Elist);
13985 pragma Inline (Set_Tagged_Present);
13986 pragma Inline (Set_Target);
13987 pragma Inline (Set_Target_Type);
13988 pragma Inline (Set_Task_Definition);
13989 pragma Inline (Set_Task_Present);
13990 pragma Inline (Set_Then_Actions);
13991 pragma Inline (Set_Then_Statements);
13992 pragma Inline (Set_Treat_Fixed_As_Integer);
13993 pragma Inline (Set_Triggering_Alternative);
13994 pragma Inline (Set_Triggering_Statement);
13995 pragma Inline (Set_Type_Definition);
13996 pragma Inline (Set_Uneval_Old_Accept);
13997 pragma Inline (Set_Uneval_Old_Warn);
13998 pragma Inline (Set_Unit);
13999 pragma Inline (Set_Uninitialized_Variable);
14000 pragma Inline (Set_Unknown_Discriminants_Present);
14001 pragma Inline (Set_Unreferenced_In_Spec);
14002 pragma Inline (Set_Used_Operations);
14003 pragma Inline (Set_Variant_Part);
14004 pragma Inline (Set_Variants);
14005 pragma Inline (Set_Visible_Declarations);
14006 pragma Inline (Set_Was_Attribute_Reference);
14007 pragma Inline (Set_Was_Expression_Function);
14008 pragma Inline (Set_Was_Originally_Stub);