1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2009, 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
37 -- design, and is 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 seven places:
64 -- The documentation associated with the node
65 -- The spec of the access function in sinfo.ads
66 -- The body of the access function in sinfo.adb
67 -- The pragma Inline at the end of sinfo.ads for the access function
68 -- The spec of the set procedure in sinfo.ads
69 -- The body of the set procedure in sinfo.adb
70 -- The pragma Inline at the end of sinfo.ads for the set procedure
72 -- The field chosen must be consistent in all places, and, for a node that
73 -- is a subexpression, must not overlap any of the standard expression
76 -- In addition, if any of the standard expression fields is changed, then
77 -- the utility program which creates the Treeprs spec (in file treeprs.ads)
78 -- must be updated appropriately, since it special cases expression fields.
80 -- If a new tree node is added, then the following changes are made
82 -- Add it to the documentation in the appropriate place
83 -- Add its fields to this documentation section
84 -- Define it in the appropriate classification in Node_Kind
85 -- In the body (sinfo), add entries to the access functions for all
86 -- its fields (except standard expression fields) to include the new
87 -- node in the checks.
88 -- Add an appropriate section to the case statement in sprint.adb
89 -- Add an appropriate section to the case statement in sem.adb
90 -- Add an appropriate section to the case statement in exp_util.adb
91 -- (Insert_Actions procedure)
92 -- For a subexpression, add an appropriate section to the case
93 -- statement in sem_eval.adb
94 -- For a subexpression, add an appropriate section to the case
95 -- statement in sem_res.adb
97 -- Finally, four utility programs must be run:
99 -- Run CSinfo to check that you have made the changes consistently. It
100 -- checks most of the rules given above, with clear error messages. This
101 -- utility reads sinfo.ads and sinfo.adb and generates a report to
104 -- Run XSinfo to create sinfo.h, the corresponding C header. This
105 -- utility reads sinfo.ads and generates sinfo.h. Note that it does
106 -- not need to read sinfo.adb, since the contents of the body are
107 -- algorithmically determinable from the spec.
109 -- Run XTreeprs to create treeprs.ads, an updated version of the module
110 -- that is used to drive the tree print routine. This utility reads (but
111 -- does not modify) treeprs.adt, the template that provides the basic
112 -- structure of the file, and then fills in the data from the comments
115 -- Run XNmake to create nmake.ads and nmake.adb, the package body and
116 -- spec of the Nmake package which contains functions for constructing
119 -- All of the above steps except CSinfo are done automatically by the
120 -- build scripts when you do a full bootstrap.
122 -- Note: sometime we could write a utility that actually generated the body
123 -- of sinfo from the spec instead of simply checking it, since, as noted
124 -- above, the contents of the body can be determined from the spec.
126 --------------------------------
127 -- Implicit Nodes in the Tree --
128 --------------------------------
130 -- Generally the structure of the tree very closely follows the grammar as
131 -- defined in the RM. However, certain nodes are omitted to save space and
132 -- simplify semantic processing. Two general classes of such omitted nodes
135 -- If the only possibilities for a non-terminal are one or more other
136 -- non-terminals (i.e. the rule is a "skinny" rule), then usually the
137 -- corresponding node is omitted from the tree, and the target construct
138 -- appears directly. For example, a real type definition is either
139 -- floating point definition or a fixed point definition. No explicit node
140 -- appears for real type definition. Instead either the floating point
141 -- definition or fixed point definition appears directly.
143 -- If a non-terminal corresponds to a list of some other non-terminal
144 -- (possibly with separating punctuation), then usually it is omitted from
145 -- the tree, and a list of components appears instead. For example,
146 -- sequence of statements does not appear explicitly in the tree. Instead
147 -- a list of statements appears directly.
149 -- Some additional cases of omitted nodes occur and are documented
150 -- individually. In particular, many nodes are omitted in the tree
151 -- generated for an expression.
153 -------------------------------------------
154 -- Handling of Defining Identifier Lists --
155 -------------------------------------------
157 -- In several declarative forms in the syntax, lists of defining
158 -- identifiers appear (object declarations, component declarations, number
159 -- declarations etc.)
161 -- The semantics of such statements are equivalent to a series of identical
162 -- declarations of single defining identifiers (except that conformance
163 -- checks require the same grouping of identifiers in the parameter case).
165 -- To simplify semantic processing, the parser breaks down such multiple
166 -- declaration cases into sequences of single declarations, duplicating
167 -- type and initialization information as required. The flags More_Ids and
168 -- Prev_Ids are used to record the original form of the source in the case
169 -- where the original source used a list of names, More_Ids being set on
170 -- all but the last name and Prev_Ids being set on all but the first name.
171 -- These flags are used to reconstruct the original source (e.g. in the
172 -- Sprint package), and also are included in the conformance checks, but
173 -- otherwise have no semantic significance.
175 -- Note: the reason that we use More_Ids and Prev_Ids rather than
176 -- First_Name and Last_Name flags is so that the flags are off in the
177 -- normal one identifier case, which minimizes tree print output.
179 -----------------------
180 -- Use of Node Lists --
181 -----------------------
183 -- With a few exceptions, if a construction of the form {non-terminal}
184 -- appears in the tree, lists are used in the corresponding tree node (see
185 -- package Nlists for handling of node lists). In this case a field of the
186 -- parent node points to a list of nodes for the non-terminal. The field
187 -- name for such fields has a plural name which always ends in "s". For
188 -- example, a case statement has a field Alternatives pointing to list of
189 -- case statement alternative nodes.
191 -- Only fields pointing to lists have names ending in "s", so generally the
192 -- structure is strongly typed, fields not ending in s point to single
193 -- nodes, and fields ending in s point to lists.
195 -- The following example shows how a traversal of a list is written. We
196 -- suppose here that Stmt points to a N_Case_Statement node which has a
197 -- list field called Alternatives:
199 -- Alt := First (Alternatives (Stmt));
200 -- while Present (Alt) loop
202 -- -- processing for case statement alternative Alt
204 -- Alt := Next (Alt);
207 -- The Present function tests for Empty, which in this case signals the end
208 -- of the list. First returns Empty immediately if the list is empty.
209 -- Present is defined in Atree, First and Next are defined in Nlists.
211 -- The exceptions to this rule occur with {DEFINING_IDENTIFIERS} in all
212 -- contexts, which is handled as described in the previous section, and
213 -- with {,library_unit_NAME} in the N_With_Clause mode, which is handled
214 -- using the First_Name and Last_Name flags, as further detailed in the
215 -- description of the N_With_Clause node.
221 -- Pragmas can appear in many different context, but are not included in
222 -- the grammar. Still they must appear in the tree, so they can be properly
225 -- Two approaches are used. In some cases, an extra field is defined in an
226 -- appropriate node that contains a list of pragmas appearing in the
227 -- expected context. For example pragmas can appear before an
228 -- Accept_Alternative in a Selective_Accept_Statement, and these pragmas
229 -- appear in the Pragmas_Before field of the N_Accept_Alternative node.
231 -- The other approach is to simply allow pragmas to appear in syntactic
232 -- lists where the grammar (of course) does not include the possibility.
233 -- For example, the Variants field of an N_Variant_Part node points to a
234 -- list that can contain both N_Pragma and N_Variant nodes.
236 -- To make processing easier in the latter case, the Nlists package
237 -- provides a set of routines (First_Non_Pragma, Last_Non_Pragma,
238 -- Next_Non_Pragma, Prev_Non_Pragma) that allow such lists to be handled
239 -- ignoring all pragmas.
241 -- In the case of the variants list, we can either write:
243 -- Variant := First (Variants (N));
244 -- while Present (Variant) loop
246 -- Variant := Next (Variant);
251 -- Variant := First_Non_Pragma (Variants (N));
252 -- while Present (Variant) loop
254 -- Variant := Next_Non_Pragma (Variant);
257 -- In the first form of the loop, Variant can either be an N_Pragma or an
258 -- N_Variant node. In the second form, Variant can only be N_Variant since
259 -- all pragmas are skipped.
261 ---------------------
262 -- Optional Fields --
263 ---------------------
265 -- Fields which correspond to a section of the syntax enclosed in square
266 -- brackets are generally omitted (and the corresponding field set to Empty
267 -- for a node, or No_List for a list). The documentation of such fields
268 -- notes these cases. One exception to this rule occurs in the case of
269 -- possibly empty statement sequences (such as the sequence of statements
270 -- in an entry call alternative). Such cases appear in the syntax rules as
271 -- [SEQUENCE_OF_STATEMENTS] and the fields corresponding to such optional
272 -- statement sequences always contain an empty list (not No_List) if no
273 -- statements are present.
275 -- Note: the utility program that constructs the body and spec of the Nmake
276 -- package relies on the format of the comments to determine if a field
277 -- should have a default value in the corresponding make routine. The rule
278 -- is that if the first line of the description of the field contains the
279 -- string "(set to xxx if", then a default value of xxx is provided for
280 -- this field in the corresponding Make_yyy routine.
282 -----------------------------------
283 -- Note on Body/Spec Terminology --
284 -----------------------------------
286 -- In informal discussions about Ada, it is customary to refer to package
287 -- and subprogram specs and bodies. However, this is not technically
288 -- correct, what is normally referred to as a spec or specification is in
289 -- fact a package declaration or subprogram declaration. We are careful in
290 -- GNAT to use the correct terminology and in particular, the full word
291 -- specification is never used as an incorrect substitute for declaration.
292 -- The structure and terminology used in the tree also reflects the grammar
293 -- and thus uses declaration and specification in the technically correct
296 -- However, there are contexts in which the informal terminology is useful.
297 -- We have the word "body" to refer to the Interp_Etype declared by the
298 -- declaration of a unit body, and in some contexts we need similar term to
299 -- refer to the entity declared by the package or subprogram declaration,
300 -- and simply using declaration can be confusing since the body also has a
303 -- An example of such a context is the link between the package body and
304 -- its declaration. With_Declaration is confusing, since the package body
305 -- itself is a declaration.
307 -- To deal with this problem, we reserve the informal term Spec, i.e. the
308 -- popular abbreviation used in this context, to refer to the entity
309 -- declared by the package or subprogram declaration. So in the above
310 -- example case, the field in the body is called With_Spec.
312 -- Another important context for the use of the word Spec is in error
313 -- messages, where a hyper-correct use of declaration would be confusing to
314 -- a typical Ada programmer, and even for an expert programmer can cause
315 -- confusion since the body has a declaration as well.
319 -- Declaration always refers to the syntactic entity that is called
320 -- a declaration. In particular, subprogram declaration
321 -- and package declaration are used to describe the
322 -- syntactic entity that includes the semicolon.
324 -- Specification always refers to the syntactic entity that is called
325 -- a specification. In particular, the terms procedure
326 -- specification, function specification, package
327 -- specification, subprogram specification always refer
328 -- to the syntactic entity that has no semicolon.
330 -- Spec is an informal term, used to refer to the entity
331 -- that is declared by a task declaration, protected
332 -- declaration, generic declaration, subprogram
333 -- declaration or package declaration.
335 -- This convention is followed throughout the GNAT documentation
336 -- both internal and external, and in all error message text.
338 ------------------------
339 -- Internal Use Nodes --
340 ------------------------
342 -- These are Node_Kind settings used in the internal implementation which
343 -- are not logically part of the specification.
346 -- Completely unused entry at the start of the enumeration type. This
347 -- is inserted so that no legitimate value is zero, which helps to get
348 -- better debugging behavior, since zero is a likely uninitialized value).
351 -- Completely unused entry at the end of the enumeration type. This is
352 -- handy so that arrays with Node_Kind as the index type have an extra
353 -- entry at the end (see for example the use of the Pchar_Pos_Array in
354 -- Treepr, where the extra entry provides the limit value when dealing with
355 -- the last used entry in the array).
357 -----------------------------------------
358 -- Note on the settings of Sloc fields --
359 -----------------------------------------
361 -- The Sloc field of nodes that come from the source is set by the parser.
362 -- For internal nodes, and nodes generated during expansion the Sloc is
363 -- usually set in the call to the constructor for the node. In general the
364 -- Sloc value chosen for an internal node is the Sloc of the source node
365 -- whose processing is responsible for the expansion. For example, the Sloc
366 -- of an inherited primitive operation is the Sloc of the corresponding
367 -- derived type declaration.
369 -- For the nodes of a generic instantiation, the Sloc value is encoded to
370 -- represent both the original Sloc in the generic unit, and the Sloc of
371 -- the instantiation itself. See Sinput.ads for details.
373 -- Subprogram instances create two callable entities: one is the visible
374 -- subprogram instance, and the other is an anonymous subprogram nested
375 -- within a wrapper package that contains the renamings for the actuals.
376 -- Both of these entities have the Sloc of the defining entity in the
377 -- instantiation node. This simplifies some ASIS queries.
379 -----------------------
380 -- Field Definitions --
381 -----------------------
383 -- In the following node definitions, all fields, both syntactic and
384 -- semantic, are documented. The one exception is in the case of entities
385 -- (defining identifiers, character literals and operator symbols), where
386 -- the usage of the fields depends on the entity kind. Entity fields are
387 -- fully documented in the separate package Einfo.
389 -- In the node definitions, three common sets of fields are abbreviated to
390 -- save both space in the documentation, and also space in the string
391 -- (defined in Tree_Print_Strings) used to print trees. The following
392 -- abbreviations are used:
394 -- Note: the utility program that creates the Treeprs spec (in the file
395 -- xtreeprs.adb) knows about the special fields here, so it must be
396 -- modified if any change is made to these fields.
398 -- "plus fields for binary operator"
399 -- Chars (Name1) Name_Id for the operator
400 -- Left_Opnd (Node2) left operand expression
401 -- Right_Opnd (Node3) right operand expression
402 -- Entity (Node4-Sem) defining entity for operator
403 -- Associated_Node (Node4-Sem) for generic processing
404 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
405 -- Has_Private_View (Flag11-Sem) set in generic units.
407 -- "plus fields for unary operator"
408 -- Chars (Name1) Name_Id for the operator
409 -- Right_Opnd (Node3) right operand expression
410 -- Entity (Node4-Sem) defining entity for operator
411 -- Associated_Node (Node4-Sem) for generic processing
412 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
413 -- Has_Private_View (Flag11-Sem) set in generic units.
415 -- "plus fields for expression"
416 -- Paren_Count number of parentheses levels
417 -- Etype (Node5-Sem) type of the expression
418 -- Is_Overloaded (Flag5-Sem) >1 type interpretation exists
419 -- Is_Static_Expression (Flag6-Sem) set for static expression
420 -- Raises_Constraint_Error (Flag7-Sem) evaluation raises CE
421 -- Must_Not_Freeze (Flag8-Sem) set if must not freeze
422 -- Do_Range_Check (Flag9-Sem) set if a range check needed
423 -- Assignment_OK (Flag15-Sem) set if modification is OK
424 -- Is_Controlling_Actual (Flag16-Sem) set for controlling argument
426 -- Note: see under (EXPRESSION) for further details on the use of
427 -- the Paren_Count field to record the number of parentheses levels.
429 -- Node_Kind is the type used in the Nkind field to indicate the node kind.
430 -- The actual definition of this type is given later (the reason for this
431 -- is that we want the descriptions ordered by logical chapter in the RM,
432 -- but the type definition is reordered to facilitate the definition of
433 -- some subtype ranges. The individual descriptions of the nodes show how
434 -- the various fields are used in each node kind, as well as providing
435 -- logical names for the fields. Functions and procedures are provided for
436 -- accessing and setting these fields using these logical names.
438 -----------------------
439 -- Gigi Restrictions --
440 -----------------------
442 -- The tree passed to Gigi is more restricted than the general tree form.
443 -- For example, as a result of expansion, most of the tasking nodes can
444 -- never appear. For each node to which either a complete or partial
445 -- restriction applies, a note entitled "Gigi restriction" appears which
446 -- documents the restriction.
448 -- Note that most of these restrictions apply only to trees generated when
449 -- code is being generated, since they involved expander actions that
452 ------------------------
453 -- Common Flag Fields --
454 ------------------------
456 -- The following flag fields appear in all nodes
459 -- This flag is used to indicate that a node (and all its children have
460 -- been analyzed. It is used to avoid reanalysis of a node that has
461 -- already been analyzed, both for efficiency and functional correctness
464 -- Comes_From_Source (Flag2)
465 -- This flag is on for any nodes built by the scanner or parser from the
466 -- source program, and off for any nodes built by the analyzer or
467 -- expander. It indicates that a node comes from the original source.
468 -- This flag is defined in Atree.
470 -- Error_Posted (Flag3)
471 -- This flag is used to avoid multiple error messages being posted on or
472 -- referring to the same node. This flag is set if an error message
473 -- refers to a node or is posted on its source location, and has the
474 -- effect of inhibiting further messages involving this same node.
476 -- Has_Dynamic_Length_Check (Flag10-Sem)
477 -- This flag is present on all nodes. It is set to indicate that one of
478 -- the routines in unit Checks has generated a length check action which
479 -- has been inserted at the flagged node. This is used to avoid the
480 -- generation of duplicate checks.
482 -- Has_Dynamic_Range_Check (Flag12-Sem)
483 -- This flag is present on all nodes. It is set to indicate that one of
484 -- the routines in unit Checks has generated a range check action which
485 -- has been inserted at the flagged node. This is used to avoid the
486 -- generation of duplicate checks.
488 -- Has_Local_Raise (Flag8-Sem)
489 -- Present in exception handler nodes. Set if the handler can be entered
490 -- via a local raise that gets transformed to a goto statement. This will
491 -- always be set if Local_Raise_Statements is non-empty, but can also be
492 -- set as a result of generation of N_Raise_xxx nodes, or flags set in
493 -- nodes requiring generation of back end checks.
495 ------------------------------------
496 -- Description of Semantic Fields --
497 ------------------------------------
499 -- The meaning of the syntactic fields is generally clear from their names
500 -- without any further description, since the names are chosen to
501 -- correspond very closely to the syntax in the reference manual. This
502 -- section describes the usage of the semantic fields, which are used to
503 -- contain additional information determined during semantic analysis.
505 -- ABE_Is_Certain (Flag18-Sem)
506 -- This flag is set in an instantiation node or a call node is determined
507 -- to be sure to raise an ABE. This is used to trigger special handling
508 -- of such cases, particularly in the instantiation case where we avoid
509 -- instantiating the body if this flag is set. This flag is also present
510 -- in an N_Formal_Package_Declaration_Node since formal package
511 -- declarations are treated like instantiations, but it is always set to
512 -- False in this context.
514 -- Accept_Handler_Records (List5-Sem)
515 -- This field is present only in an N_Accept_Alternative node. It is used
516 -- to temporarily hold the exception handler records from an accept
517 -- statement in a selective accept. These exception handlers will
518 -- eventually be placed in the Handler_Records list of the procedure
519 -- built for this accept (see Expand_N_Selective_Accept procedure in
520 -- Exp_Ch9 for further details).
522 -- Access_Types_To_Process (Elist2-Sem)
523 -- Present in N_Freeze_Entity nodes for Incomplete or private types.
524 -- Contains the list of access types which may require specific treatment
525 -- when the nature of the type completion is completely known. An example
526 -- of such treatment is the generation of the associated_final_chain.
528 -- Actions (List1-Sem)
529 -- This field contains a sequence of actions that are associated with the
530 -- node holding the field. See the individual node types for details of
531 -- how this field is used, as well as the description of the specific use
532 -- for a particular node type.
534 -- Activation_Chain_Entity (Node3-Sem)
535 -- This is used in tree nodes representing task activators (blocks,
536 -- subprogram bodies, package declarations, and task bodies). It is
537 -- initially Empty, and then gets set to point to the entity for the
538 -- declared Activation_Chain variable when the first task is declared.
539 -- When tasks are declared in the corresponding declarative region this
540 -- entity is located by name (its name is always _Chain) and the declared
541 -- tasks are added to the chain. Note that N_Extended_Return_Statement
542 -- does not have this attribute, although it does have an activation
543 -- chain. This chain is used to store the tasks temporarily, and is not
544 -- used for activating them. On successful completion of the return
545 -- statement, the tasks are moved to the caller's chain, and the caller
548 -- Acts_As_Spec (Flag4-Sem)
549 -- A flag set in the N_Subprogram_Body node for a subprogram body which
550 -- is acting as its own spec, except in the case of a library level
551 -- subprogram, in which case the flag is set on the parent compilation
552 -- unit node instead (see further description in spec of Lib package).
553 -- ??? Above note about Lib is dubious since lib.ads does not mention
554 -- Acts_As_Spec at all.
556 -- Actual_Designated_Subtype (Node4-Sem)
557 -- Present in N_Free_Statement and N_Explicit_Dereference nodes. If gigi
558 -- needs to known the dynamic constrained subtype of the designated
559 -- object, this attribute is set to that type. This is done for
560 -- N_Free_Statements for access-to-classwide types and access to
561 -- unconstrained packed array types, and for N_Explicit_Dereference when
562 -- the designated type is an unconstrained packed array and the
563 -- dereference is the prefix of a 'Size attribute reference.
565 -- Address_Warning_Posted (Flag18-Sem)
566 -- Present in N_Attribute_Definition nodes. Set to indicate that we have
567 -- posted a warning for the address clause regarding size or alignment
568 -- issues. Used to inhibit multiple redundant messages.
570 -- Aggregate_Bounds (Node3-Sem)
571 -- Present in array N_Aggregate nodes. If the aggregate contains
572 -- component associations this field points to an N_Range node whose
573 -- bounds give the lowest and highest discrete choice values. If the
574 -- named aggregate contains a dynamic or null choice this field is empty.
575 -- If the aggregate contains positional elements this field points to an
576 -- N_Integer_Literal node giving the number of positional elements. Note
577 -- that if the aggregate contains positional elements and an other choice
578 -- the N_Integer_Literal only accounts for the number of positional
581 -- All_Others (Flag11-Sem)
582 -- Present in an N_Others_Choice node. This flag is set for an others
583 -- exception where all exceptions are to be caught, even those that are
584 -- not normally handled (in particular the tasking abort signal). This
585 -- is used for translation of the at end handler into a normal exception
588 -- Assignment_OK (Flag15-Sem)
589 -- This flag is set in a subexpression node for an object, indicating
590 -- that the associated object can be modified, even if this would not
591 -- normally be permissible (either by direct assignment, or by being
592 -- passed as an out or in-out parameter). This is used by the expander
593 -- for a number of purposes, including initialization of constants and
594 -- limited type objects (such as tasks), setting discriminant fields,
595 -- setting tag values, etc. N_Object_Declaration nodes also have this
596 -- flag defined. Here it is used to indicate that an initialization
597 -- expression is valid, even where it would normally not be allowed
598 -- (e.g. where the type involved is limited).
600 -- Associated_Node (Node4-Sem)
601 -- Present in nodes that can denote an entity: identifiers, character
602 -- literals, operator symbols, expanded names, operator nodes, and
603 -- attribute reference nodes (all these nodes have an Entity field).
604 -- This field is also present in N_Aggregate, N_Selected_Component, and
605 -- N_Extension_Aggregate nodes. This field is used in generic processing
606 -- to create links between the generic template and the generic copy.
607 -- See Sem_Ch12.Get_Associated_Node for full details. Note that this
608 -- field overlaps Entity, which is fine, since, as explained in Sem_Ch12,
609 -- the normal function of Entity is not required at the point where the
610 -- Associated_Node is set. Note also, that in generic templates, this
611 -- means that the Entity field does not necessarily point to an Entity.
612 -- Since the back end is expected to ignore generic templates, this is
615 -- At_End_Proc (Node1)
616 -- This field is present in an N_Handled_Sequence_Of_Statements node.
617 -- It contains an identifier reference for the cleanup procedure to be
618 -- called. See description of this node for further details.
620 -- Backwards_OK (Flag6-Sem)
621 -- A flag present in the N_Assignment_Statement node. It is used only
622 -- if the type being assigned is an array type, and is set if analysis
623 -- determines that it is definitely safe to do the copy backwards, i.e.
624 -- starting at the highest addressed element. Note that if neither of the
625 -- flags Forwards_OK or Backwards_OK is set, it means that the front end
626 -- could not determine that either direction is definitely safe, and a
627 -- runtime check may be required if the backend cannot figure it out.
629 -- Body_To_Inline (Node3-Sem)
630 -- present in subprogram declarations. Denotes analyzed but unexpanded
631 -- body of subprogram, to be used when inlining calls. Present when the
632 -- subprogram has an Inline pragma and inlining is enabled. If the
633 -- declaration is completed by a renaming_as_body, and the renamed en-
634 -- tity is a subprogram, the Body_To_Inline is the name of that entity,
635 -- which is used directly in later calls to the original subprogram.
637 -- Body_Required (Flag13-Sem)
638 -- A flag that appears in the N_Compilation_Unit node indicating that
639 -- the corresponding unit requires a body. For the package case, this
640 -- indicates that a completion is required. In Ada 95, if the flag is not
641 -- set for the package case, then a body may not be present. In Ada 83,
642 -- if the flag is not set for the package case, then body is optional.
643 -- For a subprogram declaration, the flag is set except in the case where
644 -- a pragma Import or Interface applies, in which case no body is
645 -- permitted (in Ada 83 or Ada 95).
647 -- By_Ref (Flag5-Sem)
648 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement,
649 -- this flag is set when the returned expression is already allocated on
650 -- the secondary stack and thus the result is passed by reference rather
651 -- than copied another time.
653 -- Check_Address_Alignment (Flag11-Sem)
654 -- A flag present in N_Attribute_Definition clause for a 'Address
655 -- attribute definition. This flag is set if a dynamic check should be
656 -- generated at the freeze point for the entity to which this address
657 -- clause applies. The reason that we need this flag is that we want to
658 -- check for range checks being suppressed at the point where the
659 -- attribute definition clause is given, rather than testing this at the
662 -- Coextensions (Elist4-Sem)
663 -- Present in allocators nodes. Points to list of allocators for the
664 -- access discriminants of the allocated object.
666 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
667 -- Present in N_Simple_Return_Statement nodes. True if this node was
668 -- constructed as part of the N_Extended_Return_Statement expansion.
671 -- Compile_Time_Known_Aggregate (Flag18-Sem)
672 -- Present in N_Aggregate nodes. Set for aggregates which can be fully
673 -- evaluated at compile time without raising constraint error. Such
674 -- aggregates can be passed as is to Gigi without any expansion. See
675 -- Sem_Aggr for the specific conditions under which an aggregate has this
676 -- flag set. See also the flag Static_Processing_OK.
678 -- Condition_Actions (List3-Sem)
679 -- This field appears in else-if nodes and in the iteration scheme node
680 -- for while loops. This field is only used during semantic processing to
681 -- temporarily hold actions inserted into the tree. In the tree passed
682 -- to gigi, the condition actions field is always set to No_List. For
683 -- details on how this field is used, see the routine Insert_Actions in
684 -- package Exp_Util, and also the expansion routines for the relevant
687 -- Controlling_Argument (Node1-Sem)
688 -- This field is set in procedure and function call nodes if the call
689 -- is a dispatching call (it is Empty for a non-dispatching call). It
690 -- indicates the source of the call's controlling tag. For procedure
691 -- calls, the Controlling_Argument is one of the actuals. For function
692 -- that has a dispatching result, it is an entity in the context of the
693 -- call that can provide a tag, or else it is the tag of the root type
694 -- of the class. It can also specify a tag directly rather than being a
695 -- tagged object. The latter is needed by the implementations of AI-239
698 -- Conversion_OK (Flag14-Sem)
699 -- A flag set on type conversion nodes to indicate that the conversion
700 -- is to be considered as being valid, even though it is the case that
701 -- the conversion is not valid Ada. This is used for attributes Enum_Rep,
702 -- Fixed_Value and Integer_Value, for internal conversions done for
703 -- fixed-point operations, and for certain conversions for calls to
704 -- initialization procedures. If Conversion_OK is set, then Etype must be
705 -- set (the analyzer assumes that Etype has been set). For the case of
706 -- fixed-point operands, it also indicates that the conversion is to be
707 -- direct conversion of the underlying integer result, with no regard to
708 -- the small operand.
710 -- Corresponding_Body (Node5-Sem)
711 -- This field is set in subprogram declarations, package declarations,
712 -- entry declarations of protected types, and in generic units. It
713 -- points to the defining entity for the corresponding body (NOT the
714 -- node for the body itself).
716 -- Corresponding_Formal_Spec (Node3-Sem)
717 -- This field is set in subprogram renaming declarations, where it points
718 -- to the defining entity for a formal subprogram in the case where the
719 -- renaming corresponds to a generic formal subprogram association in an
720 -- instantiation. The field is Empty if the renaming does not correspond
721 -- to such a formal association.
723 -- Corresponding_Generic_Association (Node5-Sem)
724 -- This field is defined for object declarations and object renaming
725 -- declarations. It is set for the declarations within an instance that
726 -- map generic formals to their actuals. If set, the field points to
727 -- a generic_association which is the original parent of the expression
728 -- or name appearing in the declaration. This simplifies ASIS queries.
730 -- Corresponding_Integer_Value (Uint4-Sem)
731 -- This field is set in real literals of fixed-point types (it is not
732 -- used for floating-point types). It contains the integer value used
733 -- to represent the fixed-point value. It is also set on the universal
734 -- real literals used to represent bounds of fixed-point base types
735 -- and their first named subtypes.
737 -- Corresponding_Spec (Node5-Sem)
738 -- This field is set in subprogram, package, task, and protected body
739 -- nodes, where it points to the defining entity in the corresponding
740 -- spec. The attribute is also set in N_With_Clause nodes where it points
741 -- to the defining entity for the with'ed spec, and in a subprogram
742 -- renaming declaration when it is a Renaming_As_Body. The field is Empty
743 -- if there is no corresponding spec, as in the case of a subprogram body
744 -- that serves as its own spec.
746 -- Corresponding_Stub (Node3-Sem)
747 -- This field is present in an N_Subunit node. It holds the node in
748 -- the parent unit that is the stub declaration for the subunit. It is
749 -- set when analysis of the stub forces loading of the proper body. If
750 -- expansion of the proper body creates new declarative nodes, they are
751 -- inserted at the point of the corresponding_stub.
753 -- Dcheck_Function (Node5-Sem)
754 -- This field is present in an N_Variant node, It references the entity
755 -- for the discriminant checking function for the variant.
757 -- Debug_Statement (Node3)
758 -- This field is present in an N_Pragma node. It is used only for a Debug
759 -- pragma. The parameter is of the form of an expression, as required by
760 -- the pragma syntax, but is actually a procedure call. To simplify
761 -- semantic processing, the parser creates a copy of the argument
762 -- rearranged into a procedure call statement and places it in the
763 -- Debug_Statement field. Note that this field is considered syntactic
764 -- field, since it is created by the parser.
766 -- Default_Expression (Node5-Sem)
767 -- This field is Empty if there is no default expression. If there is a
768 -- simple default expression (one with no side effects), then this field
769 -- simply contains a copy of the Expression field (both point to the tree
770 -- for the default expression). Default_Expression is used for
771 -- conformance checking.
773 -- Discr_Check_Funcs_Built (Flag11-Sem)
774 -- This flag is present in N_Full_Type_Declaration nodes. It is set when
775 -- discriminant checking functions are constructed. The purpose is to
776 -- avoid attempting to set these functions more than once.
778 -- Do_Accessibility_Check (Flag13-Sem)
779 -- This flag is set on N_Parameter_Specification nodes to indicate
780 -- that an accessibility check is required for the parameter. It is
781 -- not yet decided who takes care of this check (TBD ???).
783 -- Do_Discriminant_Check (Flag13-Sem)
784 -- This flag is set on N_Selected_Component nodes to indicate that a
785 -- discriminant check is required using the discriminant check routine
786 -- associated with the selector. The actual check is generated by the
787 -- expander when processing selected components.
789 -- Do_Division_Check (Flag13-Sem)
790 -- This flag is set on a division operator (/ mod rem) to indicate
791 -- that a zero divide check is required. The actual check is dealt
792 -- with by the backend (all the front end does is to set the flag).
794 -- Do_Length_Check (Flag4-Sem)
795 -- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
796 -- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
797 -- is required. It is not determined who deals with this flag (???).
799 -- Do_Overflow_Check (Flag17-Sem)
800 -- This flag is set on an operator where an overflow check is required on
801 -- the operation. The actual check is dealt with by the backend (all the
802 -- front end does is to set the flag). The other cases where this flag is
803 -- used is on a Type_Conversion node and for attribute reference nodes.
804 -- For a type conversion, it means that the conversion is from one base
805 -- type to another, and the value may not fit in the target base type.
806 -- See also the description of Do_Range_Check for this case. The only
807 -- attribute references which use this flag are Pred and Succ, where it
808 -- means that the result should be checked for going outside the base
811 -- Do_Range_Check (Flag9-Sem)
812 -- This flag is set on an expression which appears in a context where a
813 -- range check is required. The target type is clear from the context.
814 -- The contexts in which this flag can appear are the following:
816 -- Right side of an assignment. In this case the target type is
817 -- taken from the left side of the assignment, which is referenced
818 -- by the Name of the N_Assignment_Statement node.
820 -- Subscript expressions in an indexed component. In this case the
821 -- target type is determined from the type of the array, which is
822 -- referenced by the Prefix of the N_Indexed_Component node.
824 -- Argument expression for a parameter, appearing either directly in
825 -- the Parameter_Associations list of a call or as the Expression of an
826 -- N_Parameter_Association node that appears in this list. In either
827 -- case, the check is against the type of the formal. Note that the
828 -- flag is relevant only in IN and IN OUT parameters, and will be
829 -- ignored for OUT parameters, where no check is required in the call,
830 -- and if a check is required on the return, it is generated explicitly
831 -- with a type conversion.
833 -- Initialization expression for the initial value in an object
834 -- declaration. In this case the Do_Range_Check flag is set on
835 -- the initialization expression, and the check is against the
836 -- range of the type of the object being declared.
838 -- The expression of a type conversion. In this case the range check is
839 -- against the target type of the conversion. See also the use of
840 -- Do_Overflow_Check on a type conversion. The distinction is that the
841 -- overflow check protects against a value that is outside the range of
842 -- the target base type, whereas a range check checks that the
843 -- resulting value (which is a value of the base type of the target
844 -- type), satisfies the range constraint of the target type.
846 -- Note: when a range check is required in contexts other than those
847 -- listed above (e.g. in a return statement), an additional type
848 -- conversion node is introduced to represent the required check.
850 -- Do_Storage_Check (Flag17-Sem)
851 -- This flag is set in an N_Allocator node to indicate that a storage
852 -- check is required for the allocation, or in an N_Subprogram_Body node
853 -- to indicate that a stack check is required in the subprogram prolog.
854 -- The N_Allocator case is handled by the routine that expands the call
855 -- to the runtime routine. The N_Subprogram_Body case is handled by the
856 -- backend, and all the semantics does is set the flag.
858 -- Do_Tag_Check (Flag13-Sem)
859 -- This flag is set on an N_Assignment_Statement, N_Function_Call,
860 -- N_Procedure_Call_Statement, N_Type_Conversion,
861 -- N_Simple_Return_Statement, or N_Extended_Return_Statement
862 -- node to indicate that the tag check can be suppressed. It is not
863 -- yet decided how this flag is used (TBD ???).
865 -- Elaborate_Present (Flag4-Sem)
866 -- This flag is set in the N_With_Clause node to indicate that pragma
867 -- Elaborate pragma appears for the with'ed units.
869 -- Elaborate_All_Desirable (Flag9-Sem)
870 -- This flag is set in the N_With_Clause mode to indicate that the static
871 -- elaboration processing has determined that an Elaborate_All pragma is
872 -- desirable for correct elaboration for this unit.
874 -- Elaborate_All_Present (Flag14-Sem)
875 -- This flag is set in the N_With_Clause node to indicate that a
876 -- pragma Elaborate_All pragma appears for the with'ed units.
878 -- Elaborate_Desirable (Flag11-Sem)
879 -- This flag is set in the N_With_Clause mode to indicate that the static
880 -- elaboration processing has determined that an Elaborate pragma is
881 -- desirable for correct elaboration for this unit.
883 -- Elaboration_Boolean (Node2-Sem)
884 -- This field is present in function and procedure specification nodes.
885 -- If set, it points to the entity for a Boolean flag that must be tested
886 -- for certain calls to check for access before elaboration. See body of
887 -- Sem_Elab for further details. This field is Empty if no elaboration
888 -- boolean is required.
890 -- Else_Actions (List3-Sem)
891 -- This field is present in conditional expression nodes. During code
892 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
893 -- actions at an appropriate place in the tree to get elaborated at the
894 -- right time. For conditional expressions, we have to be sure that the
895 -- actions for the Else branch are only elaborated if the condition is
896 -- False. The Else_Actions field is used as a temporary parking place for
897 -- these actions. The final tree is always rewritten to eliminate the
898 -- need for this field, so in the tree passed to Gigi, this field is
899 -- always set to No_List.
901 -- Enclosing_Variant (Node2-Sem)
902 -- This field is present in the N_Variant node and identifies the Node_Id
903 -- corresponding to the immediately enclosing variant when the variant is
904 -- nested, and N_Empty otherwise. Set during semantic processing of the
905 -- variant part of a record type.
907 -- Entity (Node4-Sem)
908 -- Appears in all direct names (identifiers, character literals, and
909 -- operator symbols), as well as expanded names, and attributes that
910 -- denote entities, such as 'Class. Points to entity for corresponding
911 -- defining occurrence. Set after name resolution. For identifiers in a
912 -- WITH list, the corresponding defining occurrence is in a separately
913 -- compiled file, and Entity must be set by the library Load procedure.
915 -- Note: During name resolution, the value in Entity may be temporarily
916 -- incorrect (e.g. during overload resolution, Entity is initially set to
917 -- the first possible correct interpretation, and then later modified if
918 -- necessary to contain the correct value after resolution).
920 -- Note: This field overlaps Associated_Node, which is used during
921 -- generic processing (see Sem_Ch12 for details). Note also that in
922 -- generic templates, this means that the Entity field does not always
923 -- point to an Entity. Since the back end is expected to ignore generic
924 -- templates, this is harmless.
926 -- Note: This field also appears in N_Attribute_Definition_Clause nodes.
927 -- It is used only for stream attributes definition clauses. In this
928 -- case, it denotes a (possibly dummy) subprogram entity that is declared
929 -- conceptually at the point of the clause. Thus the visibility of the
930 -- attribute definition clause (in the sense of 8.3(23) as amended by
931 -- AI-195) can be checked by testing the visibility of that subprogram.
933 -- Note: Normally the Entity field of an identifier points to the entity
934 -- for the corresponding defining identifier, and hence the Chars field
935 -- of an identifier will match the Chars field of the entity. However,
936 -- there is no requirement that these match, and there are obscure cases
937 -- of generated code where they do not match.
939 -- Entity_Or_Associated_Node (Node4-Sem)
940 -- A synonym for both Entity and Associated_Node. Used by convention in
941 -- the code when referencing this field in cases where it is not known
942 -- whether the field contains an Entity or an Associated_Node.
945 -- Appears in all expression nodes, all direct names, and all entities.
946 -- Points to the entity for the related type. Set after type resolution.
947 -- Normally this is the actual subtype of the expression. However, in
948 -- certain contexts such as the right side of an assignment, subscripts,
949 -- arguments to calls, returned value in a function, initial value etc.
950 -- it is the desired target type. In the event that this is different
951 -- from the actual type, the Do_Range_Check flag will be set if a range
952 -- check is required. Note: if the Is_Overloaded flag is set, then Etype
953 -- points to an essentially arbitrary choice from the possible set of
956 -- Exception_Junk (Flag8-Sem)
957 -- This flag is set in a various nodes appearing in a statement sequence
958 -- to indicate that the corresponding node is an artifact of the
959 -- generated code for exception handling, and should be ignored when
960 -- analyzing the control flow of the relevant sequence of statements
961 -- (e.g. to check that it does not end with a bad return statement).
963 -- Exception_Label (Node5-Sem)
964 -- Appears in N_Push_xxx_Label nodes. Points to the entity of the label
965 -- to be used for transforming the corresponding exception into a goto,
966 -- or contains Empty, if this exception is not to be transformed. Also
967 -- appears in N_Exception_Handler nodes, where, if set, it indicates
968 -- that there may be a local raise for the handler, so that expansion
969 -- to allow a goto is required (and this field contains the label for
970 -- this goto). See Exp_Ch11.Expand_Local_Exception_Handlers for details.
972 -- Expansion_Delayed (Flag11-Sem)
973 -- Set on aggregates and extension aggregates that need a top-down rather
974 -- than bottom up expansion. Typically aggregate expansion happens bottom
975 -- up. For nested aggregates the expansion is delayed until the enclosing
976 -- aggregate itself is expanded, e.g. in the context of a declaration. To
977 -- delay it we set this flag. This is done to avoid creating a temporary
978 -- for each level of a nested aggregates, and also to prevent the
979 -- premature generation of constraint checks. This is also a requirement
980 -- if we want to generate the proper attachment to the internal
981 -- finalization lists (for record with controlled components). Top down
982 -- expansion of aggregates is also used for in-place array aggregate
983 -- assignment or initialization. When the full context is known, the
984 -- target of the assignment or initialization is used to generate the
985 -- left-hand side of individual assignment to each sub-component.
987 -- First_Inlined_Subprogram (Node3-Sem)
988 -- Present in the N_Compilation_Unit node for the main program. Points
989 -- to a chain of entities for subprograms that are to be inlined. The
990 -- Next_Inlined_Subprogram field of these entities is used as a link
991 -- pointer with Empty marking the end of the list. This field is Empty
992 -- if there are no inlined subprograms or inlining is not active.
994 -- First_Named_Actual (Node4-Sem)
995 -- Present in procedure call statement and function call nodes, and also
996 -- in Intrinsic nodes. Set during semantic analysis to point to the first
997 -- named parameter where parameters are ordered by declaration order (as
998 -- opposed to the actual order in the call which may be different due to
999 -- named associations). Note: this field points to the explicit actual
1000 -- parameter itself, not the N_Parameter_Association node (its parent).
1002 -- First_Real_Statement (Node2-Sem)
1003 -- Present in N_Handled_Sequence_Of_Statements node. Normally set to
1004 -- Empty. Used only when declarations are moved into the statement part
1005 -- of a construct as a result of wrapping an AT END handler that is
1006 -- required to cover the declarations. In this case, this field is used
1007 -- to remember the location in the statements list of the first real
1008 -- statement, i.e. the statement that used to be first in the statement
1009 -- list before the declarations were prepended.
1011 -- First_Subtype_Link (Node5-Sem)
1012 -- Present in N_Freeze_Entity node for an anonymous base type that is
1013 -- implicitly created by the declaration of a first subtype. It points
1014 -- to the entity for the first subtype.
1016 -- Float_Truncate (Flag11-Sem)
1017 -- A flag present in type conversion nodes. This is used for float to
1018 -- integer conversions where truncation is required rather than rounding.
1019 -- Note that Gigi does not handle type conversions from real to integer
1020 -- with rounding (see Expand_N_Type_Conversion).
1022 -- Forwards_OK (Flag5-Sem)
1023 -- A flag present in the N_Assignment_Statement node. It is used only
1024 -- if the type being assigned is an array type, and is set if analysis
1025 -- determines that it is definitely safe to do the copy forwards, i.e.
1026 -- starting at the lowest addressed element. Note that if neither of the
1027 -- flags Forwards_OK or Backwards_OK is set, it means that the front end
1028 -- could not determine that either direction is definitely safe, and a
1029 -- runtime check is required.
1031 -- From_At_End (Flag4-Sem)
1032 -- This flag is set on an N_Raise_Statement node if it corresponds to
1033 -- the reraise statement generated as the last statement of an AT END
1034 -- handler when SJLJ exception handling is active. It is used to stop
1035 -- a bogus violation of restriction (No_Exception_Propagation), bogus
1036 -- because if the restriction is set, the reraise is not generated.
1038 -- From_At_Mod (Flag4-Sem)
1039 -- This flag is set on the attribute definition clause node that is
1040 -- generated by a transformation of an at mod phrase in a record
1041 -- representation clause. This is used to give slightly different (Ada 83
1042 -- compatible) semantics to such a clause, namely it is used to specify a
1043 -- minimum acceptable alignment for the base type and all subtypes. In
1044 -- Ada 95 terms, the actual alignment of the base type and all subtypes
1045 -- must be a multiple of the given value, and the representation clause
1046 -- is considered to be type specific instead of subtype specific.
1048 -- From_Default (Flag6-Sem)
1049 -- This flag is set on the subprogram renaming declaration created in an
1050 -- instance for a formal subprogram, when the formal is declared with a
1051 -- box, and there is no explicit actual. If the flag is present, the
1052 -- declaration is treated as an implicit reference to the formal in the
1055 -- Generic_Parent (Node5-Sem)
1056 -- Generic_Parent is defined on declaration nodes that are instances. The
1057 -- value of Generic_Parent is the generic entity from which the instance
1058 -- is obtained. Generic_Parent is also defined for the renaming
1059 -- declarations and object declarations created for the actuals in an
1060 -- instantiation. The generic parent of such a declaration is the
1061 -- corresponding generic association in the Instantiation node.
1063 -- Generic_Parent_Type (Node4-Sem)
1064 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for the
1065 -- actuals of formal private and derived types. Within the instance, the
1066 -- operations on the actual are those inherited from the parent. For a
1067 -- formal private type, the parent type is the generic type itself. The
1068 -- Generic_Parent_Type is also used in an instance to determine whether a
1069 -- private operation overrides an inherited one.
1071 -- Handler_List_Entry (Node2-Sem)
1072 -- This field is present in N_Object_Declaration nodes. It is set only
1073 -- for the Handler_Record entry generated for an exception in zero cost
1074 -- exception handling mode. It references the corresponding item in the
1075 -- handler list, and is used to delete this entry if the corresponding
1076 -- handler is deleted during optimization. For further details on why
1077 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
1079 -- Has_No_Elaboration_Code (Flag17-Sem)
1080 -- A flag that appears in the N_Compilation_Unit node to indicate whether
1081 -- or not elaboration code is present for this unit. It is initially set
1082 -- true for subprogram specs and bodies and for all generic units and
1083 -- false for non-generic package specs and bodies. Gigi may set the flag
1084 -- in the non-generic package case if it determines that no elaboration
1085 -- code is generated. Note that this flag is not related to the
1086 -- Is_Preelaborated status, there can be preelaborated packages that
1087 -- generate elaboration code, and non-preelaborated packages which do
1088 -- not generate elaboration code.
1090 -- Has_Priority_Pragma (Flag6-Sem)
1091 -- A flag present in N_Subprogram_Body, N_Task_Definition and
1092 -- N_Protected_Definition nodes to flag the presence of either a Priority
1093 -- or Interrupt_Priority pragma in the declaration sequence (public or
1094 -- private in the task and protected cases)
1096 -- Has_Private_View (Flag11-Sem)
1097 -- A flag present in generic nodes that have an entity, to indicate that
1098 -- the node has a private type. Used to exchange private and full
1099 -- declarations if the visibility at instantiation is different from the
1100 -- visibility at generic definition.
1102 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
1103 -- A flag present in N_Subprogram_Body and N_Task_Definition nodes to
1104 -- flag the presence of a pragma Relative_Deadline.
1106 -- Has_Self_Reference (Flag13-Sem)
1107 -- Present in N_Aggregate and N_Extension_Aggregate. Indicates that one
1108 -- of the expressions contains an access attribute reference to the
1109 -- enclosing type. Such a self-reference can only appear in default-
1110 -- initialized aggregate for a record type.
1112 -- Has_Storage_Size_Pragma (Flag5-Sem)
1113 -- A flag present in an N_Task_Definition node to flag the presence of a
1114 -- Storage_Size pragma.
1116 -- Has_Task_Info_Pragma (Flag7-Sem)
1117 -- A flag present in an N_Task_Definition node to flag the presence of a
1118 -- Task_Info pragma. Used to detect duplicate pragmas.
1120 -- Has_Task_Name_Pragma (Flag8-Sem)
1121 -- A flag present in N_Task_Definition nodes to flag the presence of a
1122 -- Task_Name pragma in the declaration sequence for the task.
1124 -- Has_Wide_Character (Flag11-Sem)
1125 -- Present in string literals, set if any wide character (i.e. character
1126 -- code outside the Character range) appears in the string.
1128 -- Hidden_By_Use_Clause (Elist4-Sem)
1129 -- An entity list present in use clauses that appear within
1130 -- instantiations. For the resolution of local entities, entities
1131 -- introduced by these use clauses have priority over global ones, and
1132 -- outer entities must be explicitly hidden/restored on exit.
1134 -- Implicit_With (Flag16-Sem)
1135 -- This flag is set in the N_With_Clause node that is implicitly
1136 -- generated for runtime units that are loaded by the expander, and also
1137 -- for package System, if it is loaded implicitly by a use of the
1138 -- 'Address or 'Tag attribute.
1140 -- Includes_Infinities (Flag11-Sem)
1141 -- This flag is present in N_Range nodes. It is set for the range of
1142 -- unconstrained float types defined in Standard, which include not only
1143 -- the given range of values, but also legitimately can include infinite
1144 -- values. This flag is false for any float type for which an explicit
1145 -- range is given by the programmer, even if that range is identical to
1146 -- the range for Float.
1148 -- Instance_Spec (Node5-Sem)
1149 -- This field is present in generic instantiation nodes, and also in
1150 -- formal package declaration nodes (formal package declarations are
1151 -- treated in a manner very similar to package instantiations). It points
1152 -- to the node for the spec of the instance, inserted as part of the
1153 -- semantic processing for instantiations in Sem_Ch12.
1155 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1156 -- A flag set in a Block_Statement node to indicate that it is the
1157 -- expansion of an asynchronous entry call. Such a block needs cleanup
1158 -- handler to assure that the call is cancelled.
1160 -- Is_Component_Left_Opnd (Flag13-Sem)
1161 -- Is_Component_Right_Opnd (Flag14-Sem)
1162 -- Present in concatenation nodes, to indicate that the corresponding
1163 -- operand is of the component type of the result. Used in resolving
1164 -- concatenation nodes in instances.
1166 -- Is_Controlling_Actual (Flag16-Sem)
1167 -- This flag is set on in an expression that is a controlling argument in
1168 -- a dispatching call. It is off in all other cases. See Sem_Disp for
1169 -- details of its use.
1171 -- Is_Dynamic_Coextension (Flag18-Sem)
1172 -- Present in allocator nodes, to indicate that this is an allocator
1173 -- for an access discriminant of a dynamically allocated object. The
1174 -- coextension must be deallocated and finalized at the same time as
1175 -- the enclosing object.
1177 -- Is_Entry_Barrier_Function (Flag8-Sem)
1178 -- This flag is set in an N_Subprogram_Body node which is the expansion
1179 -- of an entry barrier from a protected entry body. It is used for the
1180 -- circuitry checking for incorrect use of Current_Task.
1182 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
1183 -- This flag is set in an N_Function_Call node to indicate that the extra
1184 -- actuals to support a build-in-place style of call have been added to
1187 -- Is_In_Discriminant_Check (Flag11-Sem)
1188 -- This flag is present in a selected component, and is used to indicate
1189 -- that the reference occurs within a discriminant check. The
1190 -- significance is that optimizations based on assuming that the
1191 -- discriminant check has a correct value cannot be performed in this
1192 -- case (or the discriminant check may be optimized away!)
1194 -- Is_Machine_Number (Flag11-Sem)
1195 -- This flag is set in an N_Real_Literal node to indicate that the value
1196 -- is a machine number. This avoids some unnecessary cases of converting
1197 -- real literals to machine numbers.
1199 -- Is_Null_Loop (Flag16-Sem)
1200 -- This flag is set in an N_Loop_Statement node if the corresponding loop
1201 -- can be determined to be null at compile time. This is used to remove
1202 -- the loop entirely at expansion time.
1204 -- Is_Overloaded (Flag5-Sem)
1205 -- A flag present in all expression nodes. Used temporarily during
1206 -- overloading determination. The setting of this flag is not relevant
1207 -- once overloading analysis is complete.
1209 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1210 -- A flag present only in N_Op_Expon nodes. It is set when the
1211 -- exponentiation is of the form 2 ** N, where the type of N is an
1212 -- unsigned integral subtype whose size does not exceed the size of
1213 -- Standard_Integer (i.e. a type that can be safely converted to
1214 -- Natural), and the exponentiation appears as the right operand of an
1215 -- integer multiplication or an integer division where the dividend is
1216 -- unsigned. It is also required that overflow checking is off for both
1217 -- the exponentiation and the multiply/divide node. If this set of
1218 -- conditions holds, and the flag is set, then the division or
1219 -- multiplication can be (and is) converted to a shift.
1221 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1222 -- A flag set in a Subprogram_Body block to indicate that it is the
1223 -- implementation of a protected subprogram. Such a body needs cleanup
1224 -- handler to make sure that the associated protected object is unlocked
1225 -- when the subprogram completes.
1227 -- Is_Static_Coextension (Flag14-Sem)
1228 -- Present in N_Allocator nodes. Set if the allocator is a coextension
1229 -- of an object allocated on the stack rather than the heap.
1231 -- Is_Static_Expression (Flag6-Sem)
1232 -- Indicates that an expression is a static expression (RM 4.9). See spec
1233 -- of package Sem_Eval for full details on the use of this flag.
1235 -- Is_Subprogram_Descriptor (Flag16-Sem)
1236 -- Present in N_Object_Declaration, and set only for the object
1237 -- declaration generated for a subprogram descriptor in fast exception
1238 -- mode. See Exp_Ch11 for details of use.
1240 -- Is_Task_Allocation_Block (Flag6-Sem)
1241 -- A flag set in a Block_Statement node to indicate that it is the
1242 -- expansion of a task allocator, or the allocator of an object
1243 -- containing tasks. Such a block requires a cleanup handler to call
1244 -- Expunge_Unactivated_Tasks to complete any tasks that have been
1245 -- allocated but not activated when the allocator completes abnormally.
1247 -- Is_Task_Master (Flag5-Sem)
1248 -- A flag set in a Subprogram_Body, Block_Statement or Task_Body node to
1249 -- indicate that the construct is a task master (i.e. has declared tasks
1250 -- or declares an access to a task type).
1252 -- Itype (Node1-Sem)
1253 -- Used in N_Itype_Reference node to reference an itype for which it is
1254 -- important to ensure that it is defined. See description of this node
1255 -- for further details.
1257 -- Kill_Range_Check (Flag11-Sem)
1258 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
1259 -- result should not be subjected to range checks. This is used for the
1260 -- implementation of Normalize_Scalars.
1262 -- Label_Construct (Node2-Sem)
1263 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
1264 -- N_Block_Statement or N_Loop_Statement node to which the label
1265 -- declaration applies. This is not currently used in the compiler
1266 -- itself, but it is useful in the implementation of ASIS queries.
1267 -- This field is left empty for the special labels generated as part
1268 -- of expanding raise statements with a local exception handler.
1270 -- Library_Unit (Node4-Sem)
1271 -- In a stub node, Library_Unit points to the compilation unit node of
1272 -- the corresponding subunit.
1274 -- In a with clause node, Library_Unit points to the spec of the with'ed
1277 -- In a compilation unit node, the usage depends on the unit type:
1279 -- For a subprogram body, Library_Unit points to the compilation unit
1280 -- node of the corresponding spec, unless Acts_As_Spec is set, in which
1281 -- case it points to itself.
1283 -- For a package body, Library_Unit points to the compilation unit of
1284 -- the corresponding package spec.
1286 -- For a subprogram spec to which pragma Inline applies, Library_Unit
1287 -- points to the compilation unit node of the corresponding body, if
1288 -- inlining is active.
1290 -- For a generic declaration, Library_Unit points to the compilation
1291 -- unit node of the corresponding generic body.
1293 -- For a subunit, Library_Unit points to the compilation unit node of
1296 -- Note that this field is not used to hold the parent pointer for child
1297 -- unit (which might in any case need to use it for some other purpose as
1298 -- described above). Instead for a child unit, implicit with's are
1299 -- generated for all parents.
1301 -- Local_Raise_Statements (Elist1)
1302 -- This field is present in exception handler nodes. It is set to
1303 -- No_Elist in the normal case. If there is at least one raise statement
1304 -- which can potentially be handled as a local raise, then this field
1305 -- points to a list of raise nodes, which are calls to a routine to raise
1306 -- an exception. These are raise nodes which can be optimized into gotos
1307 -- if the handler turns out to meet the conditions which permit this
1308 -- transformation. Note that this does NOT include instances of the
1309 -- N_Raise_xxx_Error nodes since the transformation of these nodes is
1310 -- handled by the back end (using the N_Push/N_Pop mechanism).
1312 -- Loop_Actions (List2-Sem)
1313 -- A list present in Component_Association nodes in array aggregates.
1314 -- Used to collect actions that must be executed within the loop because
1315 -- they may need to be evaluated anew each time through.
1317 -- Limited_View_Installed (Flag18-Sem)
1318 -- Present in With_Clauses and in package specifications. If set on
1319 -- with_clause, it indicates that this clause has created the current
1320 -- limited view of the designated package. On a package specification, it
1321 -- indicates that the limited view has already been created because the
1322 -- package is mentioned in a limited_with_clause in the closure of the
1323 -- unit being compiled.
1325 -- Local_Raise_Not_OK (Flag7-Sem)
1326 -- Present in N_Exception_Handler nodes. Set if the handler contains
1327 -- a construct (reraise statement, or call to subprogram in package
1328 -- GNAT.Current_Exception) that makes the handler unsuitable as a target
1329 -- for a local raise (one that could otherwise be converted to a goto).
1331 -- Must_Be_Byte_Aligned (Flag14-Sem)
1332 -- This flag is present in N_Attribute_Reference nodes. It can be set
1333 -- only for the Address and Unrestricted_Access attributes. If set it
1334 -- means that the object for which the address/access is given must be on
1335 -- a byte (more accurately a storage unit) boundary. If necessary, a copy
1336 -- of the object is to be made before taking the address (this copy is in
1337 -- the current scope on the stack frame). This is used for certain cases
1338 -- of code generated by the expander that passes parameters by address.
1340 -- The reason the copy is not made by the front end is that the back end
1341 -- has more information about type layout and may be able to (but is not
1342 -- guaranteed to) prevent making unnecessary copies.
1344 -- Must_Not_Freeze (Flag8-Sem)
1345 -- A flag present in all expression nodes. Normally expressions cause
1346 -- freezing as described in the RM. If this flag is set, then this is
1347 -- inhibited. This is used by the analyzer and expander to label nodes
1348 -- that are created by semantic analysis or expansion and which must not
1349 -- cause freezing even though they normally would. This flag is also
1350 -- present in an N_Subtype_Indication node, since we also use these in
1351 -- calls to Freeze_Expression.
1353 -- Next_Entity (Node2-Sem)
1354 -- Present in defining identifiers, defining character literals and
1355 -- defining operator symbols (i.e. in all entities). The entities of a
1356 -- scope are chained, and this field is used as the forward pointer for
1357 -- this list. See Einfo for further details.
1359 -- Next_Named_Actual (Node4-Sem)
1360 -- Present in parameter association node. Set during semantic analysis to
1361 -- point to the next named parameter, where parameters are ordered by
1362 -- declaration order (as opposed to the actual order in the call, which
1363 -- may be different due to named associations). Not that this field
1364 -- points to the explicit actual parameter itself, not to the
1365 -- N_Parameter_Association node (its parent).
1367 -- Next_Pragma (Node1-Sem)
1368 -- Present in N_Pragma nodes. Used to create a linked list of pragma
1369 -- nodes. Currently used for two purposes:
1371 -- Create a list of linked Check_Policy pragmas. The head of this list
1372 -- is stored in Opt.Check_Policy_List (which has further details).
1374 -- Used by processing for Pre/Postcondition pragmas to store a list of
1375 -- pragmas associated with the spec of a subprogram (see Sem_Prag for
1378 -- Next_Rep_Item (Node5-Sem)
1379 -- Present in pragma nodes and attribute definition nodes. Used to link
1380 -- representation items that apply to an entity. See description of
1381 -- First_Rep_Item field in Einfo for full details.
1383 -- Next_Use_Clause (Node3-Sem)
1384 -- While use clauses are active during semantic processing, they are
1385 -- chained from the scope stack entry, using Next_Use_Clause as a link
1386 -- pointer, with Empty marking the end of the list. The head pointer is
1387 -- in the scope stack entry (First_Use_Clause). At the end of semantic
1388 -- processing (i.e. when Gigi sees the tree, the contents of this field
1389 -- is undefined and should not be read).
1391 -- No_Ctrl_Actions (Flag7-Sem)
1392 -- Present in N_Assignment_Statement to indicate that no finalize nor
1393 -- adjust should take place on this assignment even though the rhs is
1394 -- controlled. This is used in init procs and aggregate expansions where
1395 -- the generated assignments are more initialisations than real
1398 -- No_Elaboration_Check (Flag14-Sem)
1399 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
1400 -- that no elaboration check is needed on the call, because it appears in
1401 -- the context of a local Suppress pragma. This is used on calls within
1402 -- task bodies, where the actual elaboration checks are applied after
1403 -- analysis, when the local scope stack is not present.
1405 -- No_Entities_Ref_In_Spec (Flag8-Sem)
1406 -- Present in N_With_Clause nodes. Set if the with clause is on the
1407 -- package or subprogram spec where the main unit is the corresponding
1408 -- body, and no entities of the with'ed unit are referenced by the spec
1409 -- (an entity may still be referenced in the body, so this flag is used
1410 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
1413 -- No_Initialization (Flag13-Sem)
1414 -- Present in N_Object_Declaration and N_Allocator to indicate that the
1415 -- object must not be initialized (by Initialize or call to an init
1416 -- proc). This is needed for controlled aggregates. When the Object
1417 -- declaration has an expression, this flag means that this expression
1418 -- should not be taken into account (needed for in place initialization
1419 -- with aggregates).
1421 -- No_Truncation (Flag17-Sem)
1422 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
1423 -- only if the RM_Size of the source is greater than the RM_Size of the
1424 -- target for scalar operands. Normally in such a case we truncate some
1425 -- higher order bits of the source, and then sign/zero extend the result
1426 -- to form the output value. But if this flag is set, then we do not do
1427 -- any truncation, so for example, if an 8 bit input is converted to 5
1428 -- bit result which is in fact stored in 8 bits, then the high order
1429 -- three bits of the target result will be copied from the source. This
1430 -- is used for properly setting out of range values for use by pragmas
1431 -- Initialize_Scalars and Normalize_Scalars.
1433 -- Original_Discriminant (Node2-Sem)
1434 -- Present in identifiers. Used in references to discriminants that
1435 -- appear in generic units. Because the names of the discriminants may be
1436 -- different in an instance, we use this field to recover the position of
1437 -- the discriminant in the original type, and replace it with the
1438 -- discriminant at the same position in the instantiated type.
1440 -- Original_Entity (Node2-Sem)
1441 -- Present in numeric literals. Used to denote the named number that has
1442 -- been constant-folded into the given literal. If literal is from
1443 -- source, or the result of some other constant-folding operation, then
1444 -- Original_Entity is empty. This field is needed to handle properly
1445 -- named numbers in generic units, where the Associated_Node field
1446 -- interferes with the Entity field, making it impossible to preserve the
1447 -- original entity at the point of instantiation (ASIS problem).
1449 -- Others_Discrete_Choices (List1-Sem)
1450 -- When a case statement or variant is analyzed, the semantic checks
1451 -- determine the actual list of choices that correspond to an others
1452 -- choice. This list is materialized for later use by the expander and
1453 -- the Others_Discrete_Choices field of an N_Others_Choice node points to
1454 -- this materialized list of choices, which is in standard format for a
1455 -- list of discrete choices, except that of course it cannot contain an
1456 -- N_Others_Choice entry.
1458 -- Parameter_List_Truncated (Flag17-Sem)
1459 -- Present in N_Function_Call and N_Procedure_Call_Statement nodes. Set
1460 -- (for OpenVMS ports of GNAT only) if the parameter list is truncated as
1461 -- a result of a First_Optional_Parameter specification in an
1462 -- Import_Function, Import_Procedure, or Import_Valued_Procedure pragma.
1463 -- The truncation is done by the expander by removing trailing parameters
1464 -- from the argument list, in accordance with the set of rules allowing
1465 -- such parameter removal. In particular, parameters can be removed
1466 -- working from the end of the parameter list backwards up to and
1467 -- including the entry designated by First_Optional_Parameter in the
1468 -- Import pragma. Parameters can be removed if they are implicit and the
1469 -- default value is a known-at-compile-time value, including the use of
1470 -- the Null_Parameter attribute, or if explicit parameter values are
1471 -- present that match the corresponding defaults.
1473 -- Parent_Spec (Node4-Sem)
1474 -- For a library unit that is a child unit spec (package or subprogram
1475 -- declaration, generic declaration or instantiation, or library level
1476 -- rename, this field points to the compilation unit node for the parent
1477 -- package specification. This field is Empty for library bodies (the
1478 -- parent spec in this case can be found from the corresponding spec).
1480 -- PPC_Enabled (Flag5-Sem)
1481 -- Present in N_Pragma nodes. This flag is relevant only for precondition
1482 -- and postcondition nodes. It is true if the check corresponding to the
1483 -- pragma type is enabled at the point where the pragma appears.
1485 -- Present_Expr (Uint3-Sem)
1486 -- Present in an N_Variant node. This has a meaningful value only after
1487 -- Gigi has back annotated the tree with representation information. At
1488 -- this point, it contains a reference to a gcc expression that depends
1489 -- on the values of one or more discriminants. Give a set of discriminant
1490 -- values, this expression evaluates to False (zero) if variant is not
1491 -- present, and True (non-zero) if it is present. See unit Repinfo for
1492 -- further details on gigi back annotation. This field is used during
1493 -- ASIS processing (data decomposition annex) to determine if a field is
1496 -- Print_In_Hex (Flag13-Sem)
1497 -- Set on an N_Integer_Literal node to indicate that the value should be
1498 -- printed in hexadecimal in the sprint listing. Has no effect on
1499 -- legality or semantics of program, only on the displayed output. This
1500 -- is used to clarify output from the packed array cases.
1502 -- Procedure_To_Call (Node2-Sem)
1503 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
1504 -- and N_Extended_Return_Statement nodes. References the entity for the
1505 -- declaration of the procedure to be called to accomplish the required
1506 -- operation (i.e. for the Allocate procedure in the case of N_Allocator
1507 -- and N_Simple_Return_Statement and N_Extended_Return_Statement (for
1508 -- allocating the return value), and for the Deallocate procedure in the
1509 -- case of N_Free_Statement.
1511 -- Raises_Constraint_Error (Flag7-Sem)
1512 -- Set on an expression whose evaluation will definitely fail constraint
1513 -- error check. In the case of static expressions, this flag must be set
1514 -- accurately (and if it is set, the expression is typically illegal
1515 -- unless it appears as a non-elaborated branch of a short-circuit form).
1516 -- For a non-static expression, this flag may be set whenever an
1517 -- expression (e.g. an aggregate) is known to raise constraint error. If
1518 -- set, the expression definitely will raise CE if elaborated at runtime.
1519 -- If not set, the expression may or may not raise CE. In other words, on
1520 -- static expressions, the flag is set accurately, on non-static
1521 -- expressions it is set conservatively.
1523 -- Redundant_Use (Flag13-Sem)
1524 -- Present in nodes that can appear as an operand in a use clause or use
1525 -- type clause (identifiers, expanded names, attribute references). Set
1526 -- to indicate that a use is redundant (and therefore need not be undone
1529 -- Renaming_Exception (Node2-Sem)
1530 -- Present in N_Exception_Declaration node. Used to point back to the
1531 -- exception renaming for an exception declared within a subprogram.
1532 -- What happens is that an exception declared in a subprogram is moved
1533 -- to the library level with a unique name, and the original exception
1534 -- becomes a renaming. This link from the library level exception to the
1535 -- renaming declaration allows registering of the proper exception name.
1537 -- Return_Statement_Entity (Node5-Sem)
1538 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement.
1539 -- Points to an E_Return_Statement representing the return statement.
1541 -- Return_Object_Declarations (List3)
1542 -- Present in N_Extended_Return_Statement.
1543 -- Points to a list initially containing a single
1544 -- N_Object_Declaration representing the return object.
1545 -- We use a list (instead of just a pointer to the object decl)
1546 -- because Analyze wants to insert extra actions on this list.
1548 -- Rounded_Result (Flag18-Sem)
1549 -- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
1550 -- Used in the fixed-point cases to indicate that the result must be
1551 -- rounded as a result of the use of the 'Round attribute. Also used for
1552 -- integer N_Op_Divide nodes to indicate that the result should be
1553 -- rounded to the nearest integer (breaking ties away from zero), rather
1554 -- than truncated towards zero as usual. These rounded integer operations
1555 -- are the result of expansion of rounded fixed-point divide, conversion
1556 -- and multiplication operations.
1558 -- Scope (Node3-Sem)
1559 -- Present in defining identifiers, defining character literals and
1560 -- defining operator symbols (i.e. in all entities). The entities of a
1561 -- scope all use this field to reference the corresponding scope entity.
1562 -- See Einfo for further details.
1564 -- Shift_Count_OK (Flag4-Sem)
1565 -- A flag present in shift nodes to indicate that the shift count is
1566 -- known to be in range, i.e. is in the range from zero to word length
1567 -- minus one. If this flag is not set, then the shift count may be
1568 -- outside this range, i.e. larger than the word length, and the code
1569 -- must ensure that such shift counts give the appropriate result.
1571 -- Source_Type (Node1-Sem)
1572 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1573 -- source type entity for the unchecked conversion instantiation
1574 -- which gigi must do size validation for.
1576 -- Static_Processing_OK (Flag4-Sem)
1577 -- Present in N_Aggregate nodes. When the Compile_Time_Known_Aggregate
1578 -- flag is set, the full value of the aggregate can be determined at
1579 -- compile time and the aggregate can be passed as is to the back-end.
1580 -- In this event it is irrelevant whether this flag is set or not.
1581 -- However, if the flag Compile_Time_Known_Aggregate is not set but
1582 -- Static_Processing_OK is set, the aggregate can (but need not) be
1583 -- converted into a compile time known aggregate by the expander. See
1584 -- Sem_Aggr for the specific conditions under which an aggregate has its
1585 -- Static_Processing_OK flag set.
1587 -- Storage_Pool (Node1-Sem)
1588 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
1589 -- and N_Extended_Return_Statement nodes. References the entity for the
1590 -- storage pool to be used for the allocate or free call or for the
1591 -- allocation of the returned value from function. Empty indicates that
1592 -- the global default pool is to be used. Note that in the case
1593 -- of a return statement, this field is set only if the function returns
1594 -- value of a type whose size is not known at compile time on the
1597 -- Suppress_Loop_Warnings (Flag17-Sem)
1598 -- Used in N_Loop_Statement node to indicate that warnings within the
1599 -- body of the loop should be suppressed. This is set when the range
1600 -- of a FOR loop is known to be null, or is probably null (loop would
1601 -- only execute if invalid values are present).
1603 -- Target_Type (Node2-Sem)
1604 -- Used in an N_Validate_Unchecked_Conversion node to point to the target
1605 -- type entity for the unchecked conversion instantiation which gigi must
1606 -- do size validation for.
1608 -- Then_Actions (List3-Sem)
1609 -- This field is present in conditional expression nodes. During code
1610 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1611 -- actions at an appropriate place in the tree to get elaborated at the
1612 -- right time. For conditional expressions, we have to be sure that the
1613 -- actions for the Then branch are only elaborated if the condition is
1614 -- True. The Then_Actions field is used as a temporary parking place for
1615 -- these actions. The final tree is always rewritten to eliminate the
1616 -- need for this field, so in the tree passed to Gigi, this field is
1617 -- always set to No_List.
1619 -- Treat_Fixed_As_Integer (Flag14-Sem)
1620 -- This flag appears in operator nodes for divide, multiply, mod and rem
1621 -- on fixed-point operands. It indicates that the operands are to be
1622 -- treated as integer values, ignoring small values. This flag is only
1623 -- set as a result of expansion of fixed-point operations. Typically a
1624 -- fixed-point multiplication in the source generates subsidiary
1625 -- multiplication and division operations that work with the underlying
1626 -- integer values and have this flag set. Note that this flag is not
1627 -- needed on other arithmetic operations (add, neg, subtract etc.) since
1628 -- in these cases it is always the case that fixed is treated as integer.
1629 -- The Etype field MUST be set if this flag is set. The analyzer knows to
1630 -- leave such nodes alone, and whoever makes them must set the correct
1633 -- TSS_Elist (Elist3-Sem)
1634 -- Present in N_Freeze_Entity nodes. Holds an element list containing
1635 -- entries for each TSS (type support subprogram) associated with the
1636 -- frozen type. The elements of the list are the entities for the
1637 -- subprograms (see package Exp_TSS for further details). Set to No_Elist
1638 -- if there are no type support subprograms for the type or if the freeze
1639 -- node is not for a type.
1641 -- Unreferenced_In_Spec (Flag7-Sem)
1642 -- Present in N_With_Clause nodes. Set if the with clause is on the
1643 -- package or subprogram spec where the main unit is the corresponding
1644 -- body, and is not referenced by the spec (it may still be referenced by
1645 -- the body, so this flag is used to generate the proper message (see
1646 -- Sem_Util.Check_Unused_Withs for details)
1648 -- Was_Originally_Stub (Flag13-Sem)
1649 -- This flag is set in the node for a proper body that replaces stub.
1650 -- During the analysis procedure, stubs in some situations get rewritten
1651 -- by the corresponding bodies, and we set this flag to remember that
1652 -- this happened. Note that it is not good enough to rely on the use of
1653 -- Original_Node here because of the case of nested instantiations where
1654 -- the substituted node can be copied.
1656 -- Zero_Cost_Handling (Flag5-Sem)
1657 -- This flag is set in all handled sequence of statement and exception
1658 -- handler nodes if exceptions are to be handled using the zero-cost
1659 -- mechanism (see Ada.Exceptions and System.Exceptions in files
1660 -- a-except.ads/adb and s-except.ads for full details). What gigi needs
1661 -- to do for such a handler is simply to put the code in the handler
1662 -- somewhere. The front end has generated all necessary labels.
1664 --------------------------------------------------
1665 -- Note on Use of End_Label and End_Span Fields --
1666 --------------------------------------------------
1668 -- Several constructs have end lines:
1670 -- Loop Statement end loop [loop_IDENTIFIER];
1671 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
1672 -- Task Definition end [task_IDENTIFIER]
1673 -- Protected Definition end [protected_IDENTIFIER]
1674 -- Protected Body end [protected_IDENTIFIER]
1676 -- Block Statement end [block_IDENTIFIER];
1677 -- Subprogram Body end [DESIGNATOR];
1678 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
1679 -- Task Body end [task_IDENTIFIER];
1680 -- Accept Statement end [entry_IDENTIFIER]];
1681 -- Entry Body end [entry_IDENTIFIER];
1683 -- If Statement end if;
1684 -- Case Statement end case;
1686 -- Record Definition end record;
1687 -- Enumeration Definition );
1689 -- The End_Label and End_Span fields are used to mark the locations of
1690 -- these lines, and also keep track of the label in the case where a label
1693 -- For the first group above, the End_Label field of the corresponding node
1694 -- is used to point to the label identifier. In the case where there is no
1695 -- label in the source, the parser supplies a dummy identifier (with
1696 -- Comes_From_Source set to False), and the Sloc of this dummy identifier
1697 -- marks the location of the token following the END token.
1699 -- For the second group, the use of End_Label is similar, but the End_Label
1700 -- is found in the N_Handled_Sequence_Of_Statements node. This is done
1701 -- simply because in some cases there is no room in the parent node.
1703 -- For the third group, there is never any label, and instead of using
1704 -- End_Label, we use the End_Span field which gives the location of the
1705 -- token following END, relative to the starting Sloc of the construct,
1706 -- i.e. add Sloc (Node) + End_Span (Node) to get the Sloc of the IF or CASE
1707 -- following the End_Label.
1709 -- The record definition case is handled specially, we treat it as though
1710 -- it required an optional label which is never present, and so the parser
1711 -- always builds a dummy identifier with Comes From Source set False. The
1712 -- reason we do this, rather than using End_Span in this case, is that we
1713 -- want to generate a cross-ref entry for the end of a record, since it
1714 -- represents a scope for name declaration purposes.
1716 -- The enumeration definition case is handled in an exactly similar manner,
1717 -- building a dummy identifier to get a cross-reference.
1719 -- Note: the reason we store the difference as a Uint, instead of storing
1720 -- the Source_Ptr value directly, is that Source_Ptr values cannot be
1721 -- distinguished from other types of values, and we count on all general
1722 -- use fields being self describing. To make things easier for clients,
1723 -- note that we provide function End_Location, and procedure
1724 -- Set_End_Location to allow access to the logical value (which is the
1725 -- Source_Ptr value for the end token).
1727 ---------------------
1728 -- Syntactic Nodes --
1729 ---------------------
1731 ---------------------
1732 -- 2.3 Identifier --
1733 ---------------------
1735 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
1736 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
1738 -- An IDENTIFIER shall not be a reserved word
1740 -- In the Ada grammar identifiers are the bottom level tokens which have
1741 -- very few semantics. Actual program identifiers are direct names. If
1742 -- we were being 100% honest with the grammar, then we would have a node
1743 -- called N_Direct_Name which would point to an identifier. However,
1744 -- that's too many extra nodes, so we just use the N_Identifier node
1745 -- directly as a direct name, and it contains the expression fields and
1746 -- Entity field that correspond to its use as a direct name. In those
1747 -- few cases where identifiers appear in contexts where they are not
1748 -- direct names (pragmas, pragma argument associations, attribute
1749 -- references and attribute definition clauses), the Chars field of the
1750 -- node contains the Name_Id for the identifier name.
1752 -- Note: in GNAT, a reserved word can be treated as an identifier in two
1753 -- cases. First, an incorrect use of a reserved word as an identifier is
1754 -- diagnosed and then treated as a normal identifier. Second, an
1755 -- attribute designator of the form of a reserved word (access, delta,
1756 -- digits, range) is treated as an identifier.
1758 -- Note: The set of letters that is permitted in an identifier depends
1759 -- on the character set in use. See package Csets for full details.
1762 -- Sloc points to identifier
1763 -- Chars (Name1) contains the Name_Id for the identifier
1764 -- Entity (Node4-Sem)
1765 -- Associated_Node (Node4-Sem)
1766 -- Original_Discriminant (Node2-Sem)
1767 -- Redundant_Use (Flag13-Sem)
1768 -- Has_Private_View (Flag11-Sem) (set in generic units)
1769 -- plus fields for expression
1771 --------------------------
1772 -- 2.4 Numeric Literal --
1773 --------------------------
1775 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
1777 ----------------------------
1778 -- 2.4.1 Decimal Literal --
1779 ----------------------------
1781 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
1783 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
1785 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
1787 -- Decimal literals appear in the tree as either integer literal nodes
1788 -- or real literal nodes, depending on whether a period is present.
1790 -- Note: literal nodes appear as a result of direct use of literals
1791 -- in the source program, and also as the result of evaluating
1792 -- expressions at compile time. In the latter case, it is possible
1793 -- to construct real literals that have no syntactic representation
1794 -- using the standard literal format. Such literals are listed by
1795 -- Sprint using the notation [numerator / denominator].
1797 -- Note: the value of an integer literal node created by the front end
1798 -- is never outside the range of values of the base type. However, it
1799 -- can be the case that the value is outside the range of the
1800 -- particular subtype. This happens in the case of integer overflows
1801 -- with checks suppressed.
1803 -- N_Integer_Literal
1804 -- Sloc points to literal
1805 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1806 -- has been constant-folded into its literal value.
1807 -- Intval (Uint3) contains integer value of literal
1808 -- plus fields for expression
1809 -- Print_In_Hex (Flag13-Sem)
1812 -- Sloc points to literal
1813 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1814 -- has been constant-folded into its literal value.
1815 -- Realval (Ureal3) contains real value of literal
1816 -- Corresponding_Integer_Value (Uint4-Sem)
1817 -- Is_Machine_Number (Flag11-Sem)
1818 -- plus fields for expression
1820 --------------------------
1821 -- 2.4.2 Based Literal --
1822 --------------------------
1824 -- BASED_LITERAL ::=
1825 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
1829 -- BASED_NUMERAL ::=
1830 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
1832 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
1834 -- Based literals appear in the tree as either integer literal nodes
1835 -- or real literal nodes, depending on whether a period is present.
1837 ----------------------------
1838 -- 2.5 Character Literal --
1839 ----------------------------
1841 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
1843 -- N_Character_Literal
1844 -- Sloc points to literal
1845 -- Chars (Name1) contains the Name_Id for the identifier
1846 -- Char_Literal_Value (Uint2) contains the literal value
1847 -- Entity (Node4-Sem)
1848 -- Associated_Node (Node4-Sem)
1849 -- Has_Private_View (Flag11-Sem) set in generic units.
1850 -- plus fields for expression
1852 -- Note: the Entity field will be missing (set to Empty) for character
1853 -- literals whose type is Standard.Wide_Character or Standard.Character
1854 -- or a type derived from one of these two. In this case the character
1855 -- literal stands for its own coding. The reason we take this irregular
1856 -- short cut is to avoid the need to build lots of junk defining
1857 -- character literal nodes.
1859 -------------------------
1860 -- 2.6 String Literal --
1861 -------------------------
1863 -- STRING LITERAL ::= "{STRING_ELEMENT}"
1865 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
1866 -- single GRAPHIC_CHARACTER other than a quotation mark.
1868 -- Is_Folded_In_Parser is True if the parser created this literal by
1869 -- folding a sequence of "&" operators. For example, if the source code
1870 -- says "aaa" & "bbb" & "ccc", and this produces "aaabbbccc", the flag
1871 -- is set. This flag is needed because the parser doesn't know about
1872 -- visibility, so the folded result might be wrong, and semantic
1873 -- analysis needs to check for that.
1876 -- Sloc points to literal
1877 -- Strval (Str3) contains Id of string value
1878 -- Has_Wide_Character (Flag11-Sem)
1879 -- Is_Folded_In_Parser (Flag4)
1880 -- plus fields for expression
1886 -- A COMMENT starts with two adjacent hyphens and extends up to the
1887 -- end of the line. A COMMENT may appear on any line of a program.
1889 -- Comments are skipped by the scanner and do not appear in the tree.
1890 -- It is possible to reconstruct the position of comments with respect
1891 -- to the elements of the tree by using the source position (Sloc)
1892 -- pointers that appear in every tree node.
1898 -- PRAGMA ::= pragma IDENTIFIER
1899 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
1901 -- Note that a pragma may appear in the tree anywhere a declaration
1902 -- or a statement may appear, as well as in some other situations
1903 -- which are explicitly documented.
1906 -- Sloc points to pragma identifier
1907 -- Next_Pragma (Node1-Sem)
1908 -- Pragma_Argument_Associations (List2) (set to No_List if none)
1909 -- Debug_Statement (Node3) (set to Empty if not Debug, Assert)
1910 -- Pragma_Identifier (Node4)
1911 -- Next_Rep_Item (Node5-Sem)
1912 -- PPC_Enabled (Flag5-Sem)
1914 -- Note: we should have a section on what pragmas are passed on to
1915 -- the back end to be processed. This section should note that pragma
1916 -- Psect_Object is always converted to Common_Object, but there are
1917 -- undoubtedly many other similar notes required ???
1919 -- Note: a utility function Pragma_Name may be applied to pragma nodes
1920 -- to conveniently obtain the Chars field of the Pragma_Identifier.
1922 --------------------------------------
1923 -- 2.8 Pragma Argument Association --
1924 --------------------------------------
1926 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
1927 -- [pragma_argument_IDENTIFIER =>] NAME
1928 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
1930 -- N_Pragma_Argument_Association
1931 -- Sloc points to first token in association
1932 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
1933 -- Expression (Node3)
1935 ------------------------
1936 -- 2.9 Reserved Word --
1937 ------------------------
1939 -- Reserved words are parsed by the scanner, and returned as the
1940 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
1942 ----------------------------
1943 -- 3.1 Basic Declaration --
1944 ----------------------------
1946 -- BASIC_DECLARATION ::=
1947 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
1948 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
1949 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
1950 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
1951 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
1952 -- | GENERIC_INSTANTIATION
1954 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
1955 -- see further description in section on semantic nodes.
1957 -- Also, in the tree that is constructed, a pragma may appear
1958 -- anywhere that a declaration may appear.
1960 ------------------------------
1961 -- 3.1 Defining Identifier --
1962 ------------------------------
1964 -- DEFINING_IDENTIFIER ::= IDENTIFIER
1966 -- A defining identifier is an entity, which has additional fields
1967 -- depending on the setting of the Ekind field. These additional
1968 -- fields are defined (and access subprograms declared) in package
1971 -- Note: N_Defining_Identifier is an extended node whose fields are
1972 -- deliberate layed out to match the layout of fields in an ordinary
1973 -- N_Identifier node allowing for easy alteration of an identifier
1974 -- node into a defining identifier node. For details, see procedure
1975 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
1977 -- N_Defining_Identifier
1978 -- Sloc points to identifier
1979 -- Chars (Name1) contains the Name_Id for the identifier
1980 -- Next_Entity (Node2-Sem)
1981 -- Scope (Node3-Sem)
1982 -- Etype (Node5-Sem)
1984 -----------------------------
1985 -- 3.2.1 Type Declaration --
1986 -----------------------------
1988 -- TYPE_DECLARATION ::=
1989 -- FULL_TYPE_DECLARATION
1990 -- | INCOMPLETE_TYPE_DECLARATION
1991 -- | PRIVATE_TYPE_DECLARATION
1992 -- | PRIVATE_EXTENSION_DECLARATION
1994 ----------------------------------
1995 -- 3.2.1 Full Type Declaration --
1996 ----------------------------------
1998 -- FULL_TYPE_DECLARATION ::=
1999 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
2000 -- is TYPE_DEFINITION;
2001 -- | TASK_TYPE_DECLARATION
2002 -- | PROTECTED_TYPE_DECLARATION
2004 -- The full type declaration node is used only for the first case. The
2005 -- second case (concurrent type declaration), is represented directly
2006 -- by a task type declaration or a protected type declaration.
2008 -- N_Full_Type_Declaration
2009 -- Sloc points to TYPE
2010 -- Defining_Identifier (Node1)
2011 -- Discriminant_Specifications (List4) (set to No_List if none)
2012 -- Type_Definition (Node3)
2013 -- Discr_Check_Funcs_Built (Flag11-Sem)
2015 ----------------------------
2016 -- 3.2.1 Type Definition --
2017 ----------------------------
2019 -- TYPE_DEFINITION ::=
2020 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
2021 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
2022 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
2023 -- | DERIVED_TYPE_DEFINITION | INTERFACE_TYPE_DEFINITION
2025 --------------------------------
2026 -- 3.2.2 Subtype Declaration --
2027 --------------------------------
2029 -- SUBTYPE_DECLARATION ::=
2030 -- subtype DEFINING_IDENTIFIER is [NULL_EXCLUSION] SUBTYPE_INDICATION;
2032 -- The subtype indication field is set to Empty for subtypes
2033 -- declared in package Standard (Positive, Natural).
2035 -- N_Subtype_Declaration
2036 -- Sloc points to SUBTYPE
2037 -- Defining_Identifier (Node1)
2038 -- Null_Exclusion_Present (Flag11)
2039 -- Subtype_Indication (Node5)
2040 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
2041 -- Exception_Junk (Flag8-Sem)
2043 -------------------------------
2044 -- 3.2.2 Subtype Indication --
2045 -------------------------------
2047 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
2049 -- Note: if no constraint is present, the subtype indication appears
2050 -- directly in the tree as a subtype mark. The N_Subtype_Indication
2051 -- node is used only if a constraint is present.
2053 -- Note: [For Ada 2005 (AI-231)]: Because Ada 2005 extends this rule
2054 -- with the null-exclusion part (see AI-231), we had to introduce a new
2055 -- attribute in all the parents of subtype_indication nodes to indicate
2056 -- if the null-exclusion is present.
2058 -- Note: the reason that this node has expression fields is that a
2059 -- subtype indication can appear as an operand of a membership test.
2061 -- N_Subtype_Indication
2062 -- Sloc points to first token of subtype mark
2063 -- Subtype_Mark (Node4)
2064 -- Constraint (Node3)
2065 -- Etype (Node5-Sem)
2066 -- Must_Not_Freeze (Flag8-Sem)
2068 -- Note: Etype is a copy of the Etype field of the Subtype_Mark. The
2069 -- reason for this redundancy is so that in a list of array index types,
2070 -- the Etype can be uniformly accessed to determine the subscript type.
2071 -- This means that no Itype is constructed for the actual subtype that
2072 -- is created by the subtype indication. If such an Itype is required,
2073 -- it is constructed in the context in which the indication appears.
2075 -------------------------
2076 -- 3.2.2 Subtype Mark --
2077 -------------------------
2079 -- SUBTYPE_MARK ::= subtype_NAME
2081 -----------------------
2082 -- 3.2.2 Constraint --
2083 -----------------------
2085 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
2087 ------------------------------
2088 -- 3.2.2 Scalar Constraint --
2089 ------------------------------
2091 -- SCALAR_CONSTRAINT ::=
2092 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
2094 ---------------------------------
2095 -- 3.2.2 Composite Constraint --
2096 ---------------------------------
2098 -- COMPOSITE_CONSTRAINT ::=
2099 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
2101 -------------------------------
2102 -- 3.3.1 Object Declaration --
2103 -------------------------------
2105 -- OBJECT_DECLARATION ::=
2106 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2107 -- [NULL_EXCLUSION] SUBTYPE_INDICATION [:= EXPRESSION];
2108 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2109 -- ACCESS_DEFINITION [:= EXPRESSION];
2110 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2111 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION];
2112 -- | SINGLE_TASK_DECLARATION
2113 -- | SINGLE_PROTECTED_DECLARATION
2115 -- Note: aliased is not permitted in Ada 83 mode
2117 -- The N_Object_Declaration node is only for the first two cases.
2118 -- Single task declaration is handled by P_Task (9.1)
2119 -- Single protected declaration is handled by P_protected (9.5)
2121 -- Although the syntax allows multiple identifiers in the list, the
2122 -- semantics is as though successive declarations were given with
2123 -- identical type definition and expression components. To simplify
2124 -- semantic processing, the parser represents a multiple declaration
2125 -- case as a sequence of single declarations, using the More_Ids and
2126 -- Prev_Ids flags to preserve the original source form as described
2127 -- in the section on "Handling of Defining Identifier Lists".
2129 -- The flag Has_Init_Expression is set if an initializing expression
2130 -- is present. Normally it is set if and only if Expression contains
2131 -- a non-empty value, but there is an exception to this. When the
2132 -- initializing expression is an aggregate which requires explicit
2133 -- assignments, the Expression field gets set to Empty, but this flag
2134 -- is still set, so we don't forget we had an initializing expression.
2136 -- Note: if a range check is required for the initialization
2137 -- expression then the Do_Range_Check flag is set in the Expression,
2138 -- with the check being done against the type given by the object
2139 -- definition, which is also the Etype of the defining identifier.
2141 -- Note: the contents of the Expression field must be ignored (i.e.
2142 -- treated as though it were Empty) if No_Initialization is set True.
2144 -- Note: the back end places some restrictions on the form of the
2145 -- Expression field. If the object being declared is Atomic, then
2146 -- the Expression may not have the form of an aggregate (since this
2147 -- might cause the back end to generate separate assignments). It
2148 -- also cannot be a reference to an object marked as a true constant
2149 -- (Is_True_Constant flag set), where the object is itself initialized
2150 -- with an aggregate. If necessary the front end must generate an
2151 -- extra temporary (with Is_True_Constant set False), and initialize
2152 -- this temporary as required (the temporary itself is not atomic).
2154 -- Note: there is not node kind for object definition. Instead, the
2155 -- corresponding field holds a subtype indication, an array type
2156 -- definition, or (Ada 2005, AI-406) an access definition.
2158 -- N_Object_Declaration
2159 -- Sloc points to first identifier
2160 -- Defining_Identifier (Node1)
2161 -- Aliased_Present (Flag4) set if ALIASED appears
2162 -- Constant_Present (Flag17) set if CONSTANT appears
2163 -- Null_Exclusion_Present (Flag11)
2164 -- Object_Definition (Node4) subtype indic./array type def./ access def.
2165 -- Expression (Node3) (set to Empty if not present)
2166 -- Handler_List_Entry (Node2-Sem)
2167 -- Corresponding_Generic_Association (Node5-Sem)
2168 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2169 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2170 -- No_Initialization (Flag13-Sem)
2171 -- Assignment_OK (Flag15-Sem)
2172 -- Exception_Junk (Flag8-Sem)
2173 -- Is_Subprogram_Descriptor (Flag16-Sem)
2174 -- Has_Init_Expression (Flag14)
2176 -------------------------------------
2177 -- 3.3.1 Defining Identifier List --
2178 -------------------------------------
2180 -- DEFINING_IDENTIFIER_LIST ::=
2181 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
2183 -------------------------------
2184 -- 3.3.2 Number Declaration --
2185 -------------------------------
2187 -- NUMBER_DECLARATION ::=
2188 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
2190 -- Although the syntax allows multiple identifiers in the list, the
2191 -- semantics is as though successive declarations were given with
2192 -- identical expressions. To simplify semantic processing, the parser
2193 -- represents a multiple declaration case as a sequence of single
2194 -- declarations, using the More_Ids and Prev_Ids flags to preserve
2195 -- the original source form as described in the section on "Handling
2196 -- of Defining Identifier Lists".
2198 -- N_Number_Declaration
2199 -- Sloc points to first identifier
2200 -- Defining_Identifier (Node1)
2201 -- Expression (Node3)
2202 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2203 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2205 ----------------------------------
2206 -- 3.4 Derived Type Definition --
2207 ----------------------------------
2209 -- DERIVED_TYPE_DEFINITION ::=
2210 -- [abstract] [limited] new [NULL_EXCLUSION] parent_SUBTYPE_INDICATION
2211 -- [[and INTERFACE_LIST] RECORD_EXTENSION_PART]
2213 -- Note: ABSTRACT, LIMITED and record extension part are not permitted
2216 -- Note: a record extension part is required if ABSTRACT is present
2218 -- N_Derived_Type_Definition
2219 -- Sloc points to NEW
2220 -- Abstract_Present (Flag4)
2221 -- Null_Exclusion_Present (Flag11) (set to False if not present)
2222 -- Subtype_Indication (Node5)
2223 -- Record_Extension_Part (Node3) (set to Empty if not present)
2224 -- Limited_Present (Flag17)
2225 -- Task_Present (Flag5) set in task interfaces
2226 -- Protected_Present (Flag6) set in protected interfaces
2227 -- Synchronized_Present (Flag7) set in interfaces
2228 -- Interface_List (List2) (set to No_List if none)
2229 -- Interface_Present (Flag16) set in abstract interfaces
2231 -- Note: Task_Present, Protected_Present, Synchronized_Present,
2232 -- Interface_List, and Interface_Present are used for abstract
2233 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2235 ---------------------------
2236 -- 3.5 Range Constraint --
2237 ---------------------------
2239 -- RANGE_CONSTRAINT ::= range RANGE
2241 -- N_Range_Constraint
2242 -- Sloc points to RANGE
2243 -- Range_Expression (Node4)
2250 -- RANGE_ATTRIBUTE_REFERENCE
2251 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
2253 -- Note: the case of a range given as a range attribute reference
2254 -- appears directly in the tree as an attribute reference.
2256 -- Note: the field name for a reference to a range is Range_Expression
2257 -- rather than Range, because range is a reserved keyword in Ada!
2259 -- Note: the reason that this node has expression fields is that a
2260 -- range can appear as an operand of a membership test. The Etype
2261 -- field is the type of the range (we do NOT construct an implicit
2262 -- subtype to represent the range exactly).
2265 -- Sloc points to ..
2266 -- Low_Bound (Node1)
2267 -- High_Bound (Node2)
2268 -- Includes_Infinities (Flag11)
2269 -- plus fields for expression
2271 -- Note: if the range appears in a context, such as a subtype
2272 -- declaration, where range checks are required on one or both of
2273 -- the expression fields, then type conversion nodes are inserted
2274 -- to represent the required checks.
2276 ----------------------------------------
2277 -- 3.5.1 Enumeration Type Definition --
2278 ----------------------------------------
2280 -- ENUMERATION_TYPE_DEFINITION ::=
2281 -- (ENUMERATION_LITERAL_SPECIFICATION
2282 -- {, ENUMERATION_LITERAL_SPECIFICATION})
2284 -- Note: the Literals field in the node described below is null for
2285 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
2286 -- which special processing handles these types as special cases.
2288 -- N_Enumeration_Type_Definition
2289 -- Sloc points to left parenthesis
2290 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
2291 -- End_Label (Node4) (set to Empty if internally generated record)
2293 ----------------------------------------------
2294 -- 3.5.1 Enumeration Literal Specification --
2295 ----------------------------------------------
2297 -- ENUMERATION_LITERAL_SPECIFICATION ::=
2298 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
2300 ---------------------------------------
2301 -- 3.5.1 Defining Character Literal --
2302 ---------------------------------------
2304 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
2306 -- A defining character literal is an entity, which has additional
2307 -- fields depending on the setting of the Ekind field. These
2308 -- additional fields are defined (and access subprograms declared)
2309 -- in package Einfo.
2311 -- Note: N_Defining_Character_Literal is an extended node whose fields
2312 -- are deliberate layed out to match the layout of fields in an ordinary
2313 -- N_Character_Literal node allowing for easy alteration of a character
2314 -- literal node into a defining character literal node. For details, see
2315 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
2317 -- N_Defining_Character_Literal
2318 -- Sloc points to literal
2319 -- Chars (Name1) contains the Name_Id for the identifier
2320 -- Next_Entity (Node2-Sem)
2321 -- Scope (Node3-Sem)
2322 -- Etype (Node5-Sem)
2324 ------------------------------------
2325 -- 3.5.4 Integer Type Definition --
2326 ------------------------------------
2328 -- Note: there is an error in this rule in the latest version of the
2329 -- grammar, so we have retained the old rule pending clarification.
2331 -- INTEGER_TYPE_DEFINITION ::=
2332 -- SIGNED_INTEGER_TYPE_DEFINITION
2333 -- | MODULAR_TYPE_DEFINITION
2335 -------------------------------------------
2336 -- 3.5.4 Signed Integer Type Definition --
2337 -------------------------------------------
2339 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
2340 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2342 -- Note: the Low_Bound and High_Bound fields are set to Empty
2343 -- for integer types defined in package Standard.
2345 -- N_Signed_Integer_Type_Definition
2346 -- Sloc points to RANGE
2347 -- Low_Bound (Node1)
2348 -- High_Bound (Node2)
2350 ------------------------------------
2351 -- 3.5.4 Modular Type Definition --
2352 ------------------------------------
2354 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
2356 -- N_Modular_Type_Definition
2357 -- Sloc points to MOD
2358 -- Expression (Node3)
2360 ---------------------------------
2361 -- 3.5.6 Real Type Definition --
2362 ---------------------------------
2364 -- REAL_TYPE_DEFINITION ::=
2365 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
2367 --------------------------------------
2368 -- 3.5.7 Floating Point Definition --
2369 --------------------------------------
2371 -- FLOATING_POINT_DEFINITION ::=
2372 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
2374 -- Note: The Digits_Expression and Real_Range_Specifications fields
2375 -- are set to Empty for floating-point types declared in Standard.
2377 -- N_Floating_Point_Definition
2378 -- Sloc points to DIGITS
2379 -- Digits_Expression (Node2)
2380 -- Real_Range_Specification (Node4) (set to Empty if not present)
2382 -------------------------------------
2383 -- 3.5.7 Real Range Specification --
2384 -------------------------------------
2386 -- REAL_RANGE_SPECIFICATION ::=
2387 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2389 -- N_Real_Range_Specification
2390 -- Sloc points to RANGE
2391 -- Low_Bound (Node1)
2392 -- High_Bound (Node2)
2394 -----------------------------------
2395 -- 3.5.9 Fixed Point Definition --
2396 -----------------------------------
2398 -- FIXED_POINT_DEFINITION ::=
2399 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
2401 --------------------------------------------
2402 -- 3.5.9 Ordinary Fixed Point Definition --
2403 --------------------------------------------
2405 -- ORDINARY_FIXED_POINT_DEFINITION ::=
2406 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
2408 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2410 -- N_Ordinary_Fixed_Point_Definition
2411 -- Sloc points to DELTA
2412 -- Delta_Expression (Node3)
2413 -- Real_Range_Specification (Node4)
2415 -------------------------------------------
2416 -- 3.5.9 Decimal Fixed Point Definition --
2417 -------------------------------------------
2419 -- DECIMAL_FIXED_POINT_DEFINITION ::=
2420 -- delta static_EXPRESSION
2421 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
2423 -- Note: decimal types are not permitted in Ada 83 mode
2425 -- N_Decimal_Fixed_Point_Definition
2426 -- Sloc points to DELTA
2427 -- Delta_Expression (Node3)
2428 -- Digits_Expression (Node2)
2429 -- Real_Range_Specification (Node4) (set to Empty if not present)
2431 ------------------------------
2432 -- 3.5.9 Digits Constraint --
2433 ------------------------------
2435 -- DIGITS_CONSTRAINT ::=
2436 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
2438 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2439 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
2441 -- N_Digits_Constraint
2442 -- Sloc points to DIGITS
2443 -- Digits_Expression (Node2)
2444 -- Range_Constraint (Node4) (set to Empty if not present)
2446 --------------------------------
2447 -- 3.6 Array Type Definition --
2448 --------------------------------
2450 -- ARRAY_TYPE_DEFINITION ::=
2451 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
2453 -----------------------------------------
2454 -- 3.6 Unconstrained Array Definition --
2455 -----------------------------------------
2457 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
2458 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
2459 -- COMPONENT_DEFINITION
2461 -- Note: dimensionality of array is indicated by number of entries in
2462 -- the Subtype_Marks list, which has one entry for each dimension.
2464 -- N_Unconstrained_Array_Definition
2465 -- Sloc points to ARRAY
2466 -- Subtype_Marks (List2)
2467 -- Component_Definition (Node4)
2469 -----------------------------------
2470 -- 3.6 Index Subtype Definition --
2471 -----------------------------------
2473 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
2475 -- There is no explicit node in the tree for an index subtype
2476 -- definition since the N_Unconstrained_Array_Definition node
2477 -- incorporates the type marks which appear in this context.
2479 ---------------------------------------
2480 -- 3.6 Constrained Array Definition --
2481 ---------------------------------------
2483 -- CONSTRAINED_ARRAY_DEFINITION ::=
2484 -- array (DISCRETE_SUBTYPE_DEFINITION
2485 -- {, DISCRETE_SUBTYPE_DEFINITION})
2486 -- of COMPONENT_DEFINITION
2488 -- Note: dimensionality of array is indicated by number of entries
2489 -- in the Discrete_Subtype_Definitions list, which has one entry
2490 -- for each dimension.
2492 -- N_Constrained_Array_Definition
2493 -- Sloc points to ARRAY
2494 -- Discrete_Subtype_Definitions (List2)
2495 -- Component_Definition (Node4)
2497 --------------------------------------
2498 -- 3.6 Discrete Subtype Definition --
2499 --------------------------------------
2501 -- DISCRETE_SUBTYPE_DEFINITION ::=
2502 -- discrete_SUBTYPE_INDICATION | RANGE
2504 -------------------------------
2505 -- 3.6 Component Definition --
2506 -------------------------------
2508 -- COMPONENT_DEFINITION ::=
2509 -- [aliased] [NULL_EXCLUSION] SUBTYPE_INDICATION | ACCESS_DEFINITION
2511 -- Note: although the syntax does not permit a component definition to
2512 -- be an anonymous array (and the parser will diagnose such an attempt
2513 -- with an appropriate message), it is possible for anonymous arrays
2514 -- to appear as component definitions. The semantics and back end handle
2515 -- this case properly, and the expander in fact generates such cases.
2516 -- Access_Definition is an optional field that gives support to
2517 -- Ada 2005 (AI-230). The parser generates nodes that have either the
2518 -- Subtype_Indication field or else the Access_Definition field.
2520 -- N_Component_Definition
2521 -- Sloc points to ALIASED, ACCESS or to first token of subtype mark
2522 -- Aliased_Present (Flag4)
2523 -- Null_Exclusion_Present (Flag11)
2524 -- Subtype_Indication (Node5) (set to Empty if not present)
2525 -- Access_Definition (Node3) (set to Empty if not present)
2527 -----------------------------
2528 -- 3.6.1 Index Constraint --
2529 -----------------------------
2531 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
2533 -- It is not in general possible to distinguish between discriminant
2534 -- constraints and index constraints at parse time, since a simple
2535 -- name could be either the subtype mark of a discrete range, or an
2536 -- expression in a discriminant association with no name. Either
2537 -- entry appears simply as the name, and the semantic parse must
2538 -- distinguish between the two cases. Thus we use a common tree
2539 -- node format for both of these constraint types.
2541 -- See Discriminant_Constraint for format of node
2543 ---------------------------
2544 -- 3.6.1 Discrete Range --
2545 ---------------------------
2547 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
2549 ----------------------------
2550 -- 3.7 Discriminant Part --
2551 ----------------------------
2553 -- DISCRIMINANT_PART ::=
2554 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
2556 ------------------------------------
2557 -- 3.7 Unknown Discriminant Part --
2558 ------------------------------------
2560 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
2562 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
2564 -- There is no explicit node in the tree for an unknown discriminant
2565 -- part. Instead the Unknown_Discriminants_Present flag is set in the
2568 ----------------------------------
2569 -- 3.7 Known Discriminant Part --
2570 ----------------------------------
2572 -- KNOWN_DISCRIMINANT_PART ::=
2573 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
2575 -------------------------------------
2576 -- 3.7 Discriminant Specification --
2577 -------------------------------------
2579 -- DISCRIMINANT_SPECIFICATION ::=
2580 -- DEFINING_IDENTIFIER_LIST : [NULL_EXCLUSION] SUBTYPE_MARK
2581 -- [:= DEFAULT_EXPRESSION]
2582 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
2583 -- [:= DEFAULT_EXPRESSION]
2585 -- Although the syntax allows multiple identifiers in the list, the
2586 -- semantics is as though successive specifications were given with
2587 -- identical type definition and expression components. To simplify
2588 -- semantic processing, the parser represents a multiple declaration
2589 -- case as a sequence of single specifications, using the More_Ids and
2590 -- Prev_Ids flags to preserve the original source form as described
2591 -- in the section on "Handling of Defining Identifier Lists".
2593 -- N_Discriminant_Specification
2594 -- Sloc points to first identifier
2595 -- Defining_Identifier (Node1)
2596 -- Null_Exclusion_Present (Flag11)
2597 -- Discriminant_Type (Node5) subtype mark or access parameter definition
2598 -- Expression (Node3) (set to Empty if no default expression)
2599 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2600 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2602 -----------------------------
2603 -- 3.7 Default Expression --
2604 -----------------------------
2606 -- DEFAULT_EXPRESSION ::= EXPRESSION
2608 ------------------------------------
2609 -- 3.7.1 Discriminant Constraint --
2610 ------------------------------------
2612 -- DISCRIMINANT_CONSTRAINT ::=
2613 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
2615 -- It is not in general possible to distinguish between discriminant
2616 -- constraints and index constraints at parse time, since a simple
2617 -- name could be either the subtype mark of a discrete range, or an
2618 -- expression in a discriminant association with no name. Either
2619 -- entry appears simply as the name, and the semantic parse must
2620 -- distinguish between the two cases. Thus we use a common tree
2621 -- node format for both of these constraint types.
2623 -- N_Index_Or_Discriminant_Constraint
2624 -- Sloc points to left paren
2625 -- Constraints (List1) points to list of discrete ranges or
2626 -- discriminant associations
2628 -------------------------------------
2629 -- 3.7.1 Discriminant Association --
2630 -------------------------------------
2632 -- DISCRIMINANT_ASSOCIATION ::=
2633 -- [discriminant_SELECTOR_NAME
2634 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
2636 -- Note: a discriminant association that has no selector name list
2637 -- appears directly as an expression in the tree.
2639 -- N_Discriminant_Association
2640 -- Sloc points to first token of discriminant association
2641 -- Selector_Names (List1) (always non-empty, since if no selector
2642 -- names are present, this node is not used, see comment above)
2643 -- Expression (Node3)
2645 ---------------------------------
2646 -- 3.8 Record Type Definition --
2647 ---------------------------------
2649 -- RECORD_TYPE_DEFINITION ::=
2650 -- [[abstract] tagged] [limited] RECORD_DEFINITION
2652 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
2654 -- There is no explicit node in the tree for a record type definition.
2655 -- Instead the flags for Tagged_Present and Limited_Present appear in
2656 -- the N_Record_Definition node for a record definition appearing in
2657 -- the context of a record type definition.
2659 ----------------------------
2660 -- 3.8 Record Definition --
2661 ----------------------------
2663 -- RECORD_DEFINITION ::=
2669 -- Note: the Abstract_Present, Tagged_Present and Limited_Present
2670 -- flags appear only for a record definition appearing in a record
2673 -- Note: the NULL RECORD case is not permitted in Ada 83
2675 -- N_Record_Definition
2676 -- Sloc points to RECORD or NULL
2677 -- End_Label (Node4) (set to Empty if internally generated record)
2678 -- Abstract_Present (Flag4)
2679 -- Tagged_Present (Flag15)
2680 -- Limited_Present (Flag17)
2681 -- Component_List (Node1) empty in null record case
2682 -- Null_Present (Flag13) set in null record case
2683 -- Task_Present (Flag5) set in task interfaces
2684 -- Protected_Present (Flag6) set in protected interfaces
2685 -- Synchronized_Present (Flag7) set in interfaces
2686 -- Interface_Present (Flag16) set in abstract interfaces
2687 -- Interface_List (List2) (set to No_List if none)
2689 -- Note: Task_Present, Protected_Present, Synchronized _Present,
2690 -- Interface_List and Interface_Present are used for abstract
2691 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2693 -------------------------
2694 -- 3.8 Component List --
2695 -------------------------
2697 -- COMPONENT_LIST ::=
2698 -- COMPONENT_ITEM {COMPONENT_ITEM}
2699 -- | {COMPONENT_ITEM} VARIANT_PART
2703 -- Sloc points to first token of component list
2704 -- Component_Items (List3)
2705 -- Variant_Part (Node4) (set to Empty if no variant part)
2706 -- Null_Present (Flag13)
2708 -------------------------
2709 -- 3.8 Component Item --
2710 -------------------------
2712 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
2714 -- Note: A component item can also be a pragma, and in the tree
2715 -- that is obtained after semantic processing, a component item
2716 -- can be an N_Null node resulting from a non-recognized pragma.
2718 --------------------------------
2719 -- 3.8 Component Declaration --
2720 --------------------------------
2722 -- COMPONENT_DECLARATION ::=
2723 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
2724 -- [:= DEFAULT_EXPRESSION]
2726 -- Note: although the syntax does not permit a component definition to
2727 -- be an anonymous array (and the parser will diagnose such an attempt
2728 -- with an appropriate message), it is possible for anonymous arrays
2729 -- to appear as component definitions. The semantics and back end handle
2730 -- this case properly, and the expander in fact generates such cases.
2732 -- Although the syntax allows multiple identifiers in the list, the
2733 -- semantics is as though successive declarations were given with the
2734 -- same component definition and expression components. To simplify
2735 -- semantic processing, the parser represents a multiple declaration
2736 -- case as a sequence of single declarations, using the More_Ids and
2737 -- Prev_Ids flags to preserve the original source form as described
2738 -- in the section on "Handling of Defining Identifier Lists".
2740 -- N_Component_Declaration
2741 -- Sloc points to first identifier
2742 -- Defining_Identifier (Node1)
2743 -- Component_Definition (Node4)
2744 -- Expression (Node3) (set to Empty if no default expression)
2745 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2746 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2748 -------------------------
2749 -- 3.8.1 Variant Part --
2750 -------------------------
2753 -- case discriminant_DIRECT_NAME is
2758 -- Note: the variants list can contain pragmas as well as variants.
2759 -- In a properly formed program there is at least one variant.
2762 -- Sloc points to CASE
2766 --------------------
2768 --------------------
2771 -- when DISCRETE_CHOICE_LIST =>
2775 -- Sloc points to WHEN
2776 -- Discrete_Choices (List4)
2777 -- Component_List (Node1)
2778 -- Enclosing_Variant (Node2-Sem)
2779 -- Present_Expr (Uint3-Sem)
2780 -- Dcheck_Function (Node5-Sem)
2782 ---------------------------------
2783 -- 3.8.1 Discrete Choice List --
2784 ---------------------------------
2786 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
2788 ----------------------------
2789 -- 3.8.1 Discrete Choice --
2790 ----------------------------
2792 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
2794 -- Note: in Ada 83 mode, the expression must be a simple expression
2796 -- The only choice that appears explicitly is the OTHERS choice, as
2797 -- defined here. Other cases of discrete choice (expression and
2798 -- discrete range) appear directly. This production is also used
2799 -- for the OTHERS possibility of an exception choice.
2801 -- Note: in accordance with the syntax, the parser does not check that
2802 -- OTHERS appears at the end on its own in a choice list context. This
2803 -- is a semantic check.
2806 -- Sloc points to OTHERS
2807 -- Others_Discrete_Choices (List1-Sem)
2808 -- All_Others (Flag11-Sem)
2810 ----------------------------------
2811 -- 3.9.1 Record Extension Part --
2812 ----------------------------------
2814 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
2816 -- Note: record extension parts are not permitted in Ada 83 mode
2818 --------------------------------------
2819 -- 3.9.4 Interface Type Definition --
2820 --------------------------------------
2822 -- INTERFACE_TYPE_DEFINITION ::=
2823 -- [limited | task | protected | synchronized]
2824 -- interface [interface_list]
2826 -- Note: Interfaces are implemented with N_Record_Definition and
2827 -- N_Derived_Type_Definition nodes because most of the support
2828 -- for the analysis of abstract types has been reused to
2829 -- analyze abstract interfaces.
2831 ----------------------------------
2832 -- 3.10 Access Type Definition --
2833 ----------------------------------
2835 -- ACCESS_TYPE_DEFINITION ::=
2836 -- ACCESS_TO_OBJECT_DEFINITION
2837 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
2839 --------------------------
2840 -- 3.10 Null Exclusion --
2841 --------------------------
2843 -- NULL_EXCLUSION ::= not null
2845 ---------------------------------------
2846 -- 3.10 Access To Object Definition --
2847 ---------------------------------------
2849 -- ACCESS_TO_OBJECT_DEFINITION ::=
2850 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER]
2851 -- SUBTYPE_INDICATION
2853 -- N_Access_To_Object_Definition
2854 -- Sloc points to ACCESS
2855 -- All_Present (Flag15)
2856 -- Null_Exclusion_Present (Flag11)
2857 -- Subtype_Indication (Node5)
2858 -- Constant_Present (Flag17)
2860 -----------------------------------
2861 -- 3.10 General Access Modifier --
2862 -----------------------------------
2864 -- GENERAL_ACCESS_MODIFIER ::= all | constant
2866 -- Note: general access modifiers are not permitted in Ada 83 mode
2868 -- There is no explicit node in the tree for general access modifier.
2869 -- Instead the All_Present or Constant_Present flags are set in the
2872 -------------------------------------------
2873 -- 3.10 Access To Subprogram Definition --
2874 -------------------------------------------
2876 -- ACCESS_TO_SUBPROGRAM_DEFINITION
2877 -- [NULL_EXCLUSION] access [protected] procedure PARAMETER_PROFILE
2878 -- | [NULL_EXCLUSION] access [protected] function
2879 -- PARAMETER_AND_RESULT_PROFILE
2881 -- Note: access to subprograms are not permitted in Ada 83 mode
2883 -- N_Access_Function_Definition
2884 -- Sloc points to ACCESS
2885 -- Null_Exclusion_Present (Flag11)
2886 -- Null_Exclusion_In_Return_Present (Flag14)
2887 -- Protected_Present (Flag6)
2888 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2889 -- Result_Definition (Node4) result subtype (subtype mark or access def)
2891 -- N_Access_Procedure_Definition
2892 -- Sloc points to ACCESS
2893 -- Null_Exclusion_Present (Flag11)
2894 -- Protected_Present (Flag6)
2895 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2897 -----------------------------
2898 -- 3.10 Access Definition --
2899 -----------------------------
2901 -- ACCESS_DEFINITION ::=
2902 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER] SUBTYPE_MARK
2903 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
2905 -- Note: access to subprograms are an Ada 2005 (AI-254) extension
2907 -- N_Access_Definition
2908 -- Sloc points to ACCESS
2909 -- Null_Exclusion_Present (Flag11)
2910 -- All_Present (Flag15)
2911 -- Constant_Present (Flag17)
2912 -- Subtype_Mark (Node4)
2913 -- Access_To_Subprogram_Definition (Node3) (set to Empty if not present)
2915 -----------------------------------------
2916 -- 3.10.1 Incomplete Type Declaration --
2917 -----------------------------------------
2919 -- INCOMPLETE_TYPE_DECLARATION ::=
2920 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [IS TAGGED];
2922 -- N_Incomplete_Type_Declaration
2923 -- Sloc points to TYPE
2924 -- Defining_Identifier (Node1)
2925 -- Discriminant_Specifications (List4) (set to No_List if no
2926 -- discriminant part, or if the discriminant part is an
2927 -- unknown discriminant part)
2928 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
2929 -- Tagged_Present (Flag15)
2931 ----------------------------
2932 -- 3.11 Declarative Part --
2933 ----------------------------
2935 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
2937 -- Note: although the parser enforces the syntactic requirement that
2938 -- a declarative part can contain only declarations, the semantic
2939 -- processing may add statements to the list of actions in a
2940 -- declarative part, so the code generator should be prepared
2941 -- to accept a statement in this position.
2943 ----------------------------
2944 -- 3.11 Declarative Item --
2945 ----------------------------
2947 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
2949 ----------------------------------
2950 -- 3.11 Basic Declarative Item --
2951 ----------------------------------
2953 -- BASIC_DECLARATIVE_ITEM ::=
2954 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
2960 -- BODY ::= PROPER_BODY | BODY_STUB
2962 -----------------------
2963 -- 3.11 Proper Body --
2964 -----------------------
2967 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
2974 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
2975 -- | INDEXED_COMPONENT | SLICE
2976 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
2977 -- | TYPE_CONVERSION | FUNCTION_CALL
2978 -- | CHARACTER_LITERAL
2980 ----------------------
2981 -- 4.1 Direct Name --
2982 ----------------------
2984 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
2990 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
2992 -------------------------------
2993 -- 4.1 Explicit Dereference --
2994 -------------------------------
2996 -- EXPLICIT_DEREFERENCE ::= NAME . all
2998 -- N_Explicit_Dereference
2999 -- Sloc points to ALL
3001 -- Actual_Designated_Subtype (Node4-Sem)
3002 -- plus fields for expression
3004 -------------------------------
3005 -- 4.1 Implicit Dereference --
3006 -------------------------------
3008 -- IMPLICIT_DEREFERENCE ::= NAME
3010 ------------------------------
3011 -- 4.1.1 Indexed Component --
3012 ------------------------------
3014 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
3016 -- Note: the parser may generate this node in some situations where it
3017 -- should be a function call. The semantic pass must correct this
3018 -- misidentification (which is inevitable at the parser level).
3020 -- N_Indexed_Component
3021 -- Sloc contains a copy of the Sloc value of the Prefix
3023 -- Expressions (List1)
3024 -- plus fields for expression
3026 -- Note: if any of the subscripts requires a range check, then the
3027 -- Do_Range_Check flag is set on the corresponding expression, with
3028 -- the index type being determined from the type of the Prefix, which
3029 -- references the array being indexed.
3031 -- Note: in a fully analyzed and expanded indexed component node, and
3032 -- hence in any such node that gigi sees, if the prefix is an access
3033 -- type, then an explicit dereference operation has been inserted.
3039 -- SLICE ::= PREFIX (DISCRETE_RANGE)
3041 -- Note: an implicit subtype is created to describe the resulting
3042 -- type, so that the bounds of this type are the bounds of the slice.
3045 -- Sloc points to first token of prefix
3047 -- Discrete_Range (Node4)
3048 -- plus fields for expression
3050 -------------------------------
3051 -- 4.1.3 Selected Component --
3052 -------------------------------
3054 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
3056 -- Note: selected components that are semantically expanded names get
3057 -- changed during semantic processing into the separate N_Expanded_Name
3058 -- node. See description of this node in the section on semantic nodes.
3060 -- N_Selected_Component
3061 -- Sloc points to period
3063 -- Selector_Name (Node2)
3064 -- Associated_Node (Node4-Sem)
3065 -- Do_Discriminant_Check (Flag13-Sem)
3066 -- Is_In_Discriminant_Check (Flag11-Sem)
3067 -- plus fields for expression
3069 --------------------------
3070 -- 4.1.3 Selector Name --
3071 --------------------------
3073 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
3075 --------------------------------
3076 -- 4.1.4 Attribute Reference --
3077 --------------------------------
3079 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
3081 -- Note: the syntax is quite ambiguous at this point. Consider:
3083 -- A'Length (X) X is part of the attribute designator
3084 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
3085 -- A'Class (X) X is the expression of a type conversion
3087 -- It would be possible for the parser to distinguish these cases
3088 -- by looking at the attribute identifier. However, that would mean
3089 -- more work in introducing new implementation defined attributes,
3090 -- and also it would mean that special processing for attributes
3091 -- would be scattered around, instead of being centralized in the
3092 -- semantic routine that handles an N_Attribute_Reference node.
3093 -- Consequently, the parser in all the above cases stores the
3094 -- expression (X in these examples) as a single element list in
3095 -- in the Expressions field of the N_Attribute_Reference node.
3097 -- Similarly, for attributes like Max which take two arguments,
3098 -- we store the two arguments as a two element list in the
3099 -- Expressions field. Of course it is clear at parse time that
3100 -- this case is really a function call with an attribute as the
3101 -- prefix, but it turns out to be convenient to handle the two
3102 -- argument case in a similar manner to the one argument case,
3103 -- and indeed in general the parser will accept any number of
3104 -- expressions in this position and store them as a list in the
3105 -- attribute reference node. This allows for future addition of
3106 -- attributes that take more than two arguments.
3108 -- Note: named associates are not permitted in function calls where
3109 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
3110 -- to skip the normal subprogram argument processing.
3112 -- Note: for the attributes whose designators are technically keywords,
3113 -- i.e. digits, access, delta, range, the Attribute_Name field contains
3114 -- the corresponding name, even though no identifier is involved.
3116 -- Note: the generated code may contain stream attributes applied to
3117 -- limited types for which no stream routines exist officially. In such
3118 -- case, the result is to use the stream attribute for the underlying
3119 -- full type, or in the case of a protected type, the components
3120 -- (including any discriminants) are merely streamed in order.
3122 -- See Exp_Attr for a complete description of which attributes are
3123 -- passed onto Gigi, and which are handled entirely by the front end.
3125 -- Gigi restriction: For the Pos attribute, the prefix cannot be
3126 -- a non-standard enumeration type or a nonzero/zero semantics
3127 -- boolean type, so the value is simply the stored representation.
3129 -- Gigi requirement: For the Mechanism_Code attribute, if the prefix
3130 -- references a subprogram that is a renaming, then the front end must
3131 -- rewrite the attribute to refer directly to the renamed entity.
3133 -- Note: In generated code, the Address and Unrestricted_Access
3134 -- attributes can be applied to any expression, and the meaning is
3135 -- to create an object containing the value (the object is in the
3136 -- current stack frame), and pass the address of this value. If the
3137 -- Must_Be_Byte_Aligned flag is set, then the object whose address
3138 -- is taken must be on a byte (storage unit) boundary, and if it is
3139 -- not (or may not be), then the generated code must create a copy
3140 -- that is byte aligned, and pass the address of this copy.
3142 -- N_Attribute_Reference
3143 -- Sloc points to apostrophe
3145 -- Attribute_Name (Name2) identifier name from attribute designator
3146 -- Expressions (List1) (set to No_List if no associated expressions)
3147 -- Entity (Node4-Sem) used if the attribute yields a type
3148 -- Associated_Node (Node4-Sem)
3149 -- Do_Overflow_Check (Flag17-Sem)
3150 -- Redundant_Use (Flag13-Sem)
3151 -- Must_Be_Byte_Aligned (Flag14)
3152 -- plus fields for expression
3154 ---------------------------------
3155 -- 4.1.4 Attribute Designator --
3156 ---------------------------------
3158 -- ATTRIBUTE_DESIGNATOR ::=
3159 -- IDENTIFIER [(static_EXPRESSION)]
3160 -- | access | delta | digits
3162 -- There is no explicit node in the tree for an attribute designator.
3163 -- Instead the Attribute_Name and Expressions fields of the parent
3164 -- node (N_Attribute_Reference node) hold the information.
3166 -- Note: if ACCESS, DELTA or DIGITS appears in an attribute
3167 -- designator, then they are treated as identifiers internally
3168 -- rather than the keywords of the same name.
3170 --------------------------------------
3171 -- 4.1.4 Range Attribute Reference --
3172 --------------------------------------
3174 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
3176 -- A range attribute reference is represented in the tree using the
3177 -- normal N_Attribute_Reference node.
3179 ---------------------------------------
3180 -- 4.1.4 Range Attribute Designator --
3181 ---------------------------------------
3183 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
3185 -- A range attribute designator is represented in the tree using the
3186 -- normal N_Attribute_Reference node.
3188 --------------------
3190 --------------------
3193 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
3195 -----------------------------
3196 -- 4.3.1 Record Aggregate --
3197 -----------------------------
3199 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
3202 -- Sloc points to left parenthesis
3203 -- Expressions (List1) (set to No_List if none or null record case)
3204 -- Component_Associations (List2) (set to No_List if none)
3205 -- Null_Record_Present (Flag17)
3206 -- Aggregate_Bounds (Node3-Sem)
3207 -- Associated_Node (Node4-Sem)
3208 -- Static_Processing_OK (Flag4-Sem)
3209 -- Compile_Time_Known_Aggregate (Flag18-Sem)
3210 -- Expansion_Delayed (Flag11-Sem)
3211 -- Has_Self_Reference (Flag13-Sem)
3212 -- plus fields for expression
3214 -- Note: this structure is used for both record and array aggregates
3215 -- since the two cases are not separable by the parser. The parser
3216 -- makes no attempt to enforce consistency here, so it is up to the
3217 -- semantic phase to make sure that the aggregate is consistent (i.e.
3218 -- that it is not a "half-and-half" case that mixes record and array
3219 -- syntax. In particular, for a record aggregate, the expressions
3220 -- field will be set if there are positional associations.
3222 -- Note: N_Aggregate is not used for all aggregates; in particular,
3223 -- there is a separate node kind for extension aggregates.
3225 -- Note: gigi/gcc can handle array aggregates correctly providing that
3226 -- they are entirely positional, and the array subtype involved has a
3227 -- known at compile time length and is not bit packed, or a convention
3228 -- Fortran array with more than one dimension. If these conditions
3229 -- are not met, then the front end must translate the aggregate into
3230 -- an appropriate set of assignments into a temporary.
3232 -- Note: for the record aggregate case, gigi/gcc can handle all cases
3233 -- of record aggregates, including those for packed, and rep-claused
3234 -- records, and also variant records, providing that there are no
3235 -- variable length fields whose size is not known at runtime, and
3236 -- providing that the aggregate is presented in fully named form.
3238 ----------------------------------------------
3239 -- 4.3.1 Record Component Association List --
3240 ----------------------------------------------
3242 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
3243 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
3246 -- There is no explicit node in the tree for a record component
3247 -- association list. Instead the Null_Record_Present flag is set in
3248 -- the parent node for the NULL RECORD case.
3250 ------------------------------------------------------
3251 -- 4.3.1 Record Component Association (also 4.3.3) --
3252 ------------------------------------------------------
3254 -- RECORD_COMPONENT_ASSOCIATION ::=
3255 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
3257 -- N_Component_Association
3258 -- Sloc points to first selector name
3260 -- Loop_Actions (List2-Sem)
3261 -- Expression (Node3)
3262 -- Box_Present (Flag15)
3264 -- Note: this structure is used for both record component associations
3265 -- and array component associations, since the two cases aren't always
3266 -- separable by the parser. The choices list may represent either a
3267 -- list of selector names in the record aggregate case, or a list of
3268 -- discrete choices in the array aggregate case or an N_Others_Choice
3269 -- node (which appears as a singleton list). Box_Present gives support
3270 -- to Ada 2005 (AI-287).
3272 ----------------------------------
3273 -- 4.3.1 Component Choice List --
3274 ----------------------------------
3276 -- COMPONENT_CHOICE_LIST ::=
3277 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
3280 -- The entries of a component choice list appear in the Choices list of
3281 -- the associated N_Component_Association, as either selector names, or
3282 -- as an N_Others_Choice node.
3284 --------------------------------
3285 -- 4.3.2 Extension Aggregate --
3286 --------------------------------
3288 -- EXTENSION_AGGREGATE ::=
3289 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
3291 -- Note: extension aggregates are not permitted in Ada 83 mode
3293 -- N_Extension_Aggregate
3294 -- Sloc points to left parenthesis
3295 -- Ancestor_Part (Node3)
3296 -- Associated_Node (Node4-Sem)
3297 -- Expressions (List1) (set to No_List if none or null record case)
3298 -- Component_Associations (List2) (set to No_List if none)
3299 -- Null_Record_Present (Flag17)
3300 -- Expansion_Delayed (Flag11-Sem)
3301 -- Has_Self_Reference (Flag13-Sem)
3302 -- plus fields for expression
3304 --------------------------
3305 -- 4.3.2 Ancestor Part --
3306 --------------------------
3308 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
3310 ----------------------------
3311 -- 4.3.3 Array Aggregate --
3312 ----------------------------
3314 -- ARRAY_AGGREGATE ::=
3315 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
3317 ---------------------------------------
3318 -- 4.3.3 Positional Array Aggregate --
3319 ---------------------------------------
3321 -- POSITIONAL_ARRAY_AGGREGATE ::=
3322 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
3323 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
3325 -- See Record_Aggregate (4.3.1) for node structure
3327 ----------------------------------
3328 -- 4.3.3 Named Array Aggregate --
3329 ----------------------------------
3331 -- NAMED_ARRAY_AGGREGATE ::=
3332 -- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
3334 -- See Record_Aggregate (4.3.1) for node structure
3336 ----------------------------------------
3337 -- 4.3.3 Array Component Association --
3338 ----------------------------------------
3340 -- ARRAY_COMPONENT_ASSOCIATION ::=
3341 -- DISCRETE_CHOICE_LIST => EXPRESSION
3343 -- See Record_Component_Association (4.3.1) for node structure
3345 --------------------------------------------------
3346 -- 4.4 Expression/Relation/Term/Factor/Primary --
3347 --------------------------------------------------
3350 -- RELATION {and RELATION} | RELATION {and then RELATION}
3351 -- | RELATION {or RELATION} | RELATION {or else RELATION}
3352 -- | RELATION {xor RELATION}
3355 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
3356 -- | SIMPLE_EXPRESSION [not] in RANGE
3357 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3359 -- SIMPLE_EXPRESSION ::=
3360 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
3362 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
3364 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
3366 -- No nodes are generated for any of these constructs. Instead, the
3367 -- node for the operator appears directly. When we refer to an
3368 -- expression in this description, we mean any of the possible
3369 -- constituent components of an expression (e.g. identifier is
3370 -- an example of an expression).
3377 -- NUMERIC_LITERAL | null
3378 -- | STRING_LITERAL | AGGREGATE
3379 -- | NAME | QUALIFIED_EXPRESSION
3380 -- | ALLOCATOR | (EXPRESSION)
3382 -- Usually there is no explicit node in the tree for primary. Instead
3383 -- the constituent (e.g. AGGREGATE) appears directly. There are two
3384 -- exceptions. First, there is an explicit node for a null primary.
3387 -- Sloc points to NULL
3388 -- plus fields for expression
3390 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
3391 -- that the parser keep track of which subexpressions are enclosed
3392 -- in parentheses, and how many levels of parentheses are used. This
3393 -- information is required for optimization purposes, and also for
3394 -- some semantic checks (e.g. (((1))) in a procedure spec does not
3395 -- conform with ((((1)))) in the body).
3397 -- The parentheses are recorded by keeping a Paren_Count field in every
3398 -- subexpression node (it is actually present in all nodes, but only
3399 -- used in subexpression nodes). This count records the number of
3400 -- levels of parentheses. If the number of levels in the source exceeds
3401 -- the maximum accommodated by this count, then the count is simply left
3402 -- at the maximum value. This means that there are some pathological
3403 -- cases of failure to detect conformance failures (e.g. an expression
3404 -- with 500 levels of parens will conform with one with 501 levels),
3405 -- but we do not need to lose sleep over this.
3407 -- Historical note: in versions of GNAT prior to 1.75, there was a node
3408 -- type N_Parenthesized_Expression used to accurately record unlimited
3409 -- numbers of levels of parentheses. However, it turned out to be a
3410 -- real nuisance to have to take into account the possible presence of
3411 -- this node during semantic analysis, since basically parentheses have
3412 -- zero relevance to semantic analysis.
3414 -- Note: the level of parentheses always present in things like
3415 -- aggregates does not count, only the parentheses in the primary
3416 -- (EXPRESSION) affect the setting of the Paren_Count field.
3418 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
3419 -- treated as though it were Empty) if No_Initialization is set True.
3421 --------------------------------------
3422 -- 4.5 Short Circuit Control Forms --
3423 --------------------------------------
3426 -- RELATION {and then RELATION} | RELATION {or else RELATION}
3428 -- Gigi restriction: For both these control forms, the operand and
3429 -- result types are always Standard.Boolean. The expander inserts the
3430 -- required conversion operations where needed to ensure this is the
3434 -- Sloc points to AND of AND THEN
3435 -- Left_Opnd (Node2)
3436 -- Right_Opnd (Node3)
3437 -- Actions (List1-Sem)
3438 -- plus fields for expression
3441 -- Sloc points to OR of OR ELSE
3442 -- Left_Opnd (Node2)
3443 -- Right_Opnd (Node3)
3444 -- Actions (List1-Sem)
3445 -- plus fields for expression
3447 -- Note: The Actions field is used to hold actions associated with
3448 -- the right hand operand. These have to be treated specially since
3449 -- they are not unconditionally executed. See Insert_Actions for a
3450 -- more detailed description of how these actions are handled.
3452 ---------------------------
3453 -- 4.5 Membership Tests --
3454 ---------------------------
3457 -- SIMPLE_EXPRESSION [not] in RANGE
3458 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3460 -- Note: although the grammar above allows only a range or a
3461 -- subtype mark, the parser in fact will accept any simple
3462 -- expression in place of a subtype mark. This means that the
3463 -- semantic analyzer must be prepared to deal with, and diagnose
3464 -- a simple expression other than a name for the right operand.
3465 -- This simplifies error recovery in the parser.
3468 -- Sloc points to IN
3469 -- Left_Opnd (Node2)
3470 -- Right_Opnd (Node3)
3471 -- plus fields for expression
3474 -- Sloc points to NOT of NOT IN
3475 -- Left_Opnd (Node2)
3476 -- Right_Opnd (Node3)
3477 -- plus fields for expression
3479 --------------------
3481 --------------------
3483 -- LOGICAL_OPERATOR ::= and | or | xor
3485 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
3487 -- BINARY_ADDING_OPERATOR ::= + | - | &
3489 -- UNARY_ADDING_OPERATOR ::= + | -
3491 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
3493 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
3495 -- Sprint syntax if Treat_Fixed_As_Integer is set:
3502 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
3503 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
3504 -- All handling of smalls for multiplication and division is handled
3505 -- by the front end (mod and rem result only from expansion). Gigi
3506 -- thus never needs to worry about small values (for other operators
3507 -- operating on fixed-point, e.g. addition, the small value does not
3508 -- have any semantic effect anyway, these are always integer operations.
3510 -- Gigi restriction: For all operators taking Boolean operands, the
3511 -- type is always Standard.Boolean. The expander inserts the required
3512 -- conversion operations where needed to ensure this is the case.
3515 -- Sloc points to AND
3516 -- Do_Length_Check (Flag4-Sem)
3517 -- plus fields for binary operator
3518 -- plus fields for expression
3521 -- Sloc points to OR
3522 -- Do_Length_Check (Flag4-Sem)
3523 -- plus fields for binary operator
3524 -- plus fields for expression
3527 -- Sloc points to XOR
3528 -- Do_Length_Check (Flag4-Sem)
3529 -- plus fields for binary operator
3530 -- plus fields for expression
3534 -- plus fields for binary operator
3535 -- plus fields for expression
3538 -- Sloc points to /=
3539 -- plus fields for binary operator
3540 -- plus fields for expression
3544 -- plus fields for binary operator
3545 -- plus fields for expression
3548 -- Sloc points to <=
3549 -- plus fields for binary operator
3550 -- plus fields for expression
3554 -- plus fields for binary operator
3555 -- plus fields for expression
3558 -- Sloc points to >=
3559 -- plus fields for binary operator
3560 -- plus fields for expression
3563 -- Sloc points to + (binary)
3564 -- plus fields for binary operator
3565 -- plus fields for expression
3568 -- Sloc points to - (binary)
3569 -- plus fields for binary operator
3570 -- plus fields for expression
3574 -- Is_Component_Left_Opnd (Flag13-Sem)
3575 -- Is_Component_Right_Opnd (Flag14-Sem)
3576 -- plus fields for binary operator
3577 -- plus fields for expression
3581 -- Treat_Fixed_As_Integer (Flag14-Sem)
3582 -- Rounded_Result (Flag18-Sem)
3583 -- plus fields for binary operator
3584 -- plus fields for expression
3588 -- Treat_Fixed_As_Integer (Flag14-Sem)
3589 -- Do_Division_Check (Flag13-Sem)
3590 -- Rounded_Result (Flag18-Sem)
3591 -- plus fields for binary operator
3592 -- plus fields for expression
3595 -- Sloc points to MOD
3596 -- Treat_Fixed_As_Integer (Flag14-Sem)
3597 -- Do_Division_Check (Flag13-Sem)
3598 -- plus fields for binary operator
3599 -- plus fields for expression
3602 -- Sloc points to REM
3603 -- Treat_Fixed_As_Integer (Flag14-Sem)
3604 -- Do_Division_Check (Flag13-Sem)
3605 -- plus fields for binary operator
3606 -- plus fields for expression
3609 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
3610 -- Sloc points to **
3611 -- plus fields for binary operator
3612 -- plus fields for expression
3615 -- Sloc points to + (unary)
3616 -- plus fields for unary operator
3617 -- plus fields for expression
3620 -- Sloc points to - (unary)
3621 -- plus fields for unary operator
3622 -- plus fields for expression
3625 -- Sloc points to ABS
3626 -- plus fields for unary operator
3627 -- plus fields for expression
3630 -- Sloc points to NOT
3631 -- plus fields for unary operator
3632 -- plus fields for expression
3634 -- See also shift operators in section B.2
3636 -- Note on fixed-point operations passed to Gigi: For adding operators,
3637 -- the semantics is to treat these simply as integer operations, with
3638 -- the small values being ignored (the bounds are already stored in
3639 -- units of small, so that constraint checking works as usual). For the
3640 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
3641 -- point operands if the Treat_Fixed_As_Integer flag is set and will
3642 -- thus treat these nodes in identical manner, ignoring small values.
3644 --------------------------
3645 -- 4.6 Type Conversion --
3646 --------------------------
3648 -- TYPE_CONVERSION ::=
3649 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
3651 -- In the (NAME) case, the name is stored as the expression
3653 -- Note: the parser never generates a type conversion node, since it
3654 -- looks like an indexed component which is generated by preference.
3655 -- The semantic pass must correct this misidentification.
3657 -- Gigi handles conversions that involve no change in the root type,
3658 -- and also all conversions from integer to floating-point types.
3659 -- Conversions from floating-point to integer are only handled in
3660 -- the case where Float_Truncate flag set. Other conversions from
3661 -- floating-point to integer (involving rounding) and all conversions
3662 -- involving fixed-point types are handled by the expander.
3664 -- Sprint syntax if Float_Truncate set: X^(Y)
3665 -- Sprint syntax if Conversion_OK set X?(Y)
3666 -- Sprint syntax if both flags set X?^(Y)
3668 -- Note: If either the operand or result type is fixed-point, Gigi will
3669 -- only see a type conversion node with Conversion_OK set. The front end
3670 -- takes care of all handling of small's for fixed-point conversions.
3672 -- N_Type_Conversion
3673 -- Sloc points to first token of subtype mark
3674 -- Subtype_Mark (Node4)
3675 -- Expression (Node3)
3676 -- Do_Tag_Check (Flag13-Sem)
3677 -- Do_Length_Check (Flag4-Sem)
3678 -- Do_Overflow_Check (Flag17-Sem)
3679 -- Float_Truncate (Flag11-Sem)
3680 -- Rounded_Result (Flag18-Sem)
3681 -- Conversion_OK (Flag14-Sem)
3682 -- plus fields for expression
3684 -- Note: if a range check is required, then the Do_Range_Check flag
3685 -- is set in the Expression with the check being done against the
3686 -- target type range (after the base type conversion, if any).
3688 -------------------------------
3689 -- 4.7 Qualified Expression --
3690 -------------------------------
3692 -- QUALIFIED_EXPRESSION ::=
3693 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
3695 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
3696 -- the expression, so the Expression field of this node always points
3697 -- to a parenthesized expression in this case (i.e. Paren_Count will
3698 -- always be non-zero for the referenced expression if it is not an
3701 -- N_Qualified_Expression
3702 -- Sloc points to apostrophe
3703 -- Subtype_Mark (Node4)
3704 -- Expression (Node3) expression or aggregate
3705 -- plus fields for expression
3707 --------------------
3709 --------------------
3712 -- new [NULL_EXCLUSION] SUBTYPE_INDICATION | new QUALIFIED_EXPRESSION
3714 -- Sprint syntax (when storage pool present)
3715 -- new xxx (storage_pool = pool)
3718 -- Sloc points to NEW
3719 -- Expression (Node3) subtype indication or qualified expression
3720 -- Storage_Pool (Node1-Sem)
3721 -- Procedure_To_Call (Node2-Sem)
3722 -- Coextensions (Elist4-Sem)
3723 -- Null_Exclusion_Present (Flag11)
3724 -- No_Initialization (Flag13-Sem)
3725 -- Is_Static_Coextension (Flag14-Sem)
3726 -- Do_Storage_Check (Flag17-Sem)
3727 -- Is_Dynamic_Coextension (Flag18-Sem)
3728 -- plus fields for expression
3730 ---------------------------------
3731 -- 5.1 Sequence Of Statements --
3732 ---------------------------------
3734 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
3736 -- Note: Although the parser will not accept a declaration as a
3737 -- statement, the semantic analyzer may insert declarations (e.g.
3738 -- declarations of implicit types needed for execution of other
3739 -- statements) into a sequence of statements, so the code generator
3740 -- should be prepared to accept a declaration where a statement is
3741 -- expected. Note also that pragmas can appear as statements.
3743 --------------------
3745 --------------------
3748 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
3750 -- There is no explicit node in the tree for a statement. Instead, the
3751 -- individual statement appears directly. Labels are treated as a
3752 -- kind of statement, i.e. they are linked into a statement list at
3753 -- the point they appear, so the labeled statement appears following
3754 -- the label or labels in the statement list.
3756 ---------------------------
3757 -- 5.1 Simple Statement --
3758 ---------------------------
3760 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
3761 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
3762 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
3763 -- | SIMPLE_RETURN_STATEMENT | ENTRY_CALL_STATEMENT
3764 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
3765 -- | ABORT_STATEMENT | RAISE_STATEMENT
3768 -----------------------------
3769 -- 5.1 Compound Statement --
3770 -----------------------------
3772 -- COMPOUND_STATEMENT ::=
3773 -- IF_STATEMENT | CASE_STATEMENT
3774 -- | LOOP_STATEMENT | BLOCK_STATEMENT
3775 -- | EXTENDED_RETURN_STATEMENT
3776 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
3778 -------------------------
3779 -- 5.1 Null Statement --
3780 -------------------------
3782 -- NULL_STATEMENT ::= null;
3785 -- Sloc points to NULL
3791 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
3793 -- Note that the occurrence of a label is not a defining identifier,
3794 -- but rather a referencing occurrence. The defining occurrence is
3795 -- in the implicit label declaration which occurs in the innermost
3799 -- Sloc points to <<
3800 -- Identifier (Node1) direct name of statement identifier
3801 -- Exception_Junk (Flag8-Sem)
3803 -------------------------------
3804 -- 5.1 Statement Identifier --
3805 -------------------------------
3807 -- STATEMENT_IDENTIFIER ::= DIRECT_NAME
3809 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
3810 -- (not an OPERATOR_SYMBOL)
3812 -------------------------------
3813 -- 5.2 Assignment Statement --
3814 -------------------------------
3816 -- ASSIGNMENT_STATEMENT ::=
3817 -- variable_NAME := EXPRESSION;
3819 -- N_Assignment_Statement
3820 -- Sloc points to :=
3822 -- Expression (Node3)
3823 -- Do_Tag_Check (Flag13-Sem)
3824 -- Do_Length_Check (Flag4-Sem)
3825 -- Forwards_OK (Flag5-Sem)
3826 -- Backwards_OK (Flag6-Sem)
3827 -- No_Ctrl_Actions (Flag7-Sem)
3829 -- Note: if a range check is required, then the Do_Range_Check flag
3830 -- is set in the Expression (right hand side), with the check being
3831 -- done against the type of the Name (left hand side).
3833 -- Note: the back end places some restrictions on the form of the
3834 -- Expression field. If the object being assigned to is Atomic, then
3835 -- the Expression may not have the form of an aggregate (since this
3836 -- might cause the back end to generate separate assignments). It
3837 -- also cannot be a reference to an object marked as a true constant
3838 -- (Is_True_Constant flag set), where the object is itself initialized
3839 -- with an aggregate. If necessary the front end must generate an
3840 -- extra temporary (with Is_True_Constant set False), and initialize
3841 -- this temporary as required (the temporary itself is not atomic).
3843 -----------------------
3844 -- 5.3 If Statement --
3845 -----------------------
3848 -- if CONDITION then
3849 -- SEQUENCE_OF_STATEMENTS
3850 -- {elsif CONDITION then
3851 -- SEQUENCE_OF_STATEMENTS}
3853 -- SEQUENCE_OF_STATEMENTS]
3856 -- Gigi restriction: This expander ensures that the type of the
3857 -- Condition fields is always Standard.Boolean, even if the type
3858 -- in the source is some non-standard boolean type.
3861 -- Sloc points to IF
3862 -- Condition (Node1)
3863 -- Then_Statements (List2)
3864 -- Elsif_Parts (List3) (set to No_List if none present)
3865 -- Else_Statements (List4) (set to No_List if no else part present)
3866 -- End_Span (Uint5) (set to No_Uint if expander generated)
3869 -- Sloc points to ELSIF
3870 -- Condition (Node1)
3871 -- Then_Statements (List2)
3872 -- Condition_Actions (List3-Sem)
3874 --------------------
3876 --------------------
3878 -- CONDITION ::= boolean_EXPRESSION
3880 -------------------------
3881 -- 5.4 Case Statement --
3882 -------------------------
3884 -- CASE_STATEMENT ::=
3885 -- case EXPRESSION is
3886 -- CASE_STATEMENT_ALTERNATIVE
3887 -- {CASE_STATEMENT_ALTERNATIVE}
3890 -- Note: the Alternatives can contain pragmas. These only occur at
3891 -- the start of the list, since any pragmas occurring after the first
3892 -- alternative are absorbed into the corresponding statement sequence.
3895 -- Sloc points to CASE
3896 -- Expression (Node3)
3897 -- Alternatives (List4)
3898 -- End_Span (Uint5) (set to No_Uint if expander generated)
3900 -------------------------------------
3901 -- 5.4 Case Statement Alternative --
3902 -------------------------------------
3904 -- CASE_STATEMENT_ALTERNATIVE ::=
3905 -- when DISCRETE_CHOICE_LIST =>
3906 -- SEQUENCE_OF_STATEMENTS
3908 -- N_Case_Statement_Alternative
3909 -- Sloc points to WHEN
3910 -- Discrete_Choices (List4)
3911 -- Statements (List3)
3913 -------------------------
3914 -- 5.5 Loop Statement --
3915 -------------------------
3917 -- LOOP_STATEMENT ::=
3918 -- [loop_STATEMENT_IDENTIFIER :]
3919 -- [ITERATION_SCHEME] loop
3920 -- SEQUENCE_OF_STATEMENTS
3921 -- end loop [loop_IDENTIFIER];
3923 -- Note: The occurrence of a loop label is not a defining identifier
3924 -- but rather a referencing occurrence. The defining occurrence is in
3925 -- the implicit label declaration which occurs in the innermost
3928 -- Note: there is always a loop statement identifier present in
3929 -- the tree, even if none was given in the source. In the case where
3930 -- no loop identifier is given in the source, the parser creates
3931 -- a name of the form _Loop_n, where n is a decimal integer (the
3932 -- two underlines ensure that the loop names created in this manner
3933 -- do not conflict with any user defined identifiers), and the flag
3934 -- Has_Created_Identifier is set to True. The only exception to the
3935 -- rule that all loop statement nodes have identifiers occurs for
3936 -- loops constructed by the expander, and the semantic analyzer will
3937 -- create and supply dummy loop identifiers in these cases.
3940 -- Sloc points to LOOP
3941 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
3942 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
3943 -- Statements (List3)
3944 -- End_Label (Node4)
3945 -- Has_Created_Identifier (Flag15)
3946 -- Is_Null_Loop (Flag16)
3947 -- Suppress_Loop_Warnings (Flag17)
3949 --------------------------
3950 -- 5.5 Iteration Scheme --
3951 --------------------------
3953 -- ITERATION_SCHEME ::=
3954 -- while CONDITION | for LOOP_PARAMETER_SPECIFICATION
3956 -- Gigi restriction: This expander ensures that the type of the
3957 -- Condition field is always Standard.Boolean, even if the type
3958 -- in the source is some non-standard boolean type.
3960 -- N_Iteration_Scheme
3961 -- Sloc points to WHILE or FOR
3962 -- Condition (Node1) (set to Empty if FOR case)
3963 -- Condition_Actions (List3-Sem)
3964 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
3966 ---------------------------------------
3967 -- 5.5 Loop parameter specification --
3968 ---------------------------------------
3970 -- LOOP_PARAMETER_SPECIFICATION ::=
3971 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
3973 -- N_Loop_Parameter_Specification
3974 -- Sloc points to first identifier
3975 -- Defining_Identifier (Node1)
3976 -- Reverse_Present (Flag15)
3977 -- Discrete_Subtype_Definition (Node4)
3979 --------------------------
3980 -- 5.6 Block Statement --
3981 --------------------------
3983 -- BLOCK_STATEMENT ::=
3984 -- [block_STATEMENT_IDENTIFIER:]
3986 -- DECLARATIVE_PART]
3988 -- HANDLED_SEQUENCE_OF_STATEMENTS
3989 -- end [block_IDENTIFIER];
3991 -- Note that the occurrence of a block identifier is not a defining
3992 -- identifier, but rather a referencing occurrence. The defining
3993 -- occurrence is an E_Block entity declared by the implicit label
3994 -- declaration which occurs in the innermost enclosing block statement
3995 -- or body; the block identifier denotes that E_Block.
3997 -- For block statements that come from source code, there is always a
3998 -- block statement identifier present in the tree, denoting an
3999 -- E_Block. In the case where no block identifier is given in the
4000 -- source, the parser creates a name of the form B_n, where n is a
4001 -- decimal integer, and the flag Has_Created_Identifier is set to
4002 -- True. Blocks constructed by the expander usually have no identifier,
4003 -- and no corresponding entity.
4005 -- Note: the block statement created for an extended return statement
4006 -- has an entity, and this entity is an E_Return_Statement, rather than
4007 -- the usual E_Block.
4009 -- Note: Exception_Junk is set for the wrapping blocks created during
4010 -- local raise optimization (Exp_Ch11.Expand_Local_Exception_Handlers).
4012 -- N_Block_Statement
4013 -- Sloc points to DECLARE or BEGIN
4014 -- Identifier (Node1) block direct name (set to Empty if not present)
4015 -- Declarations (List2) (set to No_List if no DECLARE part)
4016 -- Handled_Statement_Sequence (Node4)
4017 -- Is_Task_Master (Flag5-Sem)
4018 -- Activation_Chain_Entity (Node3-Sem)
4019 -- Has_Created_Identifier (Flag15)
4020 -- Is_Task_Allocation_Block (Flag6)
4021 -- Is_Asynchronous_Call_Block (Flag7)
4022 -- Exception_Junk (Flag8-Sem)
4024 -------------------------
4025 -- 5.7 Exit Statement --
4026 -------------------------
4028 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
4030 -- Gigi restriction: This expander ensures that the type of the
4031 -- Condition field is always Standard.Boolean, even if the type
4032 -- in the source is some non-standard boolean type.
4035 -- Sloc points to EXIT
4036 -- Name (Node2) (set to Empty if no loop name present)
4037 -- Condition (Node1) (set to Empty if no when part present)
4039 -------------------------
4040 -- 5.9 Goto Statement --
4041 -------------------------
4043 -- GOTO_STATEMENT ::= goto label_NAME;
4046 -- Sloc points to GOTO
4048 -- Exception_Junk (Flag8-Sem)
4050 ---------------------------------
4051 -- 6.1 Subprogram Declaration --
4052 ---------------------------------
4054 -- SUBPROGRAM_DECLARATION ::= SUBPROGRAM_SPECIFICATION;
4056 -- N_Subprogram_Declaration
4057 -- Sloc points to FUNCTION or PROCEDURE
4058 -- Specification (Node1)
4059 -- Body_To_Inline (Node3-Sem)
4060 -- Corresponding_Body (Node5-Sem)
4061 -- Parent_Spec (Node4-Sem)
4063 ------------------------------------------
4064 -- 6.1 Abstract Subprogram Declaration --
4065 ------------------------------------------
4067 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
4068 -- SUBPROGRAM_SPECIFICATION is abstract;
4070 -- N_Abstract_Subprogram_Declaration
4071 -- Sloc points to ABSTRACT
4072 -- Specification (Node1)
4074 -----------------------------------
4075 -- 6.1 Subprogram Specification --
4076 -----------------------------------
4078 -- SUBPROGRAM_SPECIFICATION ::=
4079 -- [[not] overriding]
4080 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
4081 -- | [[not] overriding]
4082 -- function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
4084 -- Note: there are no separate nodes for the profiles, instead the
4085 -- information appears directly in the following nodes.
4087 -- N_Function_Specification
4088 -- Sloc points to FUNCTION
4089 -- Defining_Unit_Name (Node1) (the designator)
4090 -- Elaboration_Boolean (Node2-Sem)
4091 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4092 -- Null_Exclusion_Present (Flag11)
4093 -- Result_Definition (Node4) for result subtype
4094 -- Generic_Parent (Node5-Sem)
4095 -- Must_Override (Flag14) set if overriding indicator present
4096 -- Must_Not_Override (Flag15) set if not_overriding indicator present
4098 -- N_Procedure_Specification
4099 -- Sloc points to PROCEDURE
4100 -- Defining_Unit_Name (Node1)
4101 -- Elaboration_Boolean (Node2-Sem)
4102 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4103 -- Generic_Parent (Node5-Sem)
4104 -- Null_Present (Flag13) set for null procedure case (Ada 2005 feature)
4105 -- Must_Override (Flag14) set if overriding indicator present
4106 -- Must_Not_Override (Flag15) set if not_overriding indicator present
4108 -- Note: overriding indicator is an Ada 2005 feature
4110 ---------------------
4111 -- 6.1 Designator --
4112 ---------------------
4115 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
4117 -- Designators that are simply identifiers or operator symbols appear
4118 -- directly in the tree in this form. The following node is used only
4119 -- in the case where the designator has a parent unit name component.
4122 -- Sloc points to period
4123 -- Name (Node2) holds the parent unit name. Note that this is always
4124 -- non-Empty, since this node is only used for the case where a
4125 -- parent library unit package name is present.
4126 -- Identifier (Node1)
4128 -- Note that the identifier can also be an operator symbol here
4130 ------------------------------
4131 -- 6.1 Defining Designator --
4132 ------------------------------
4134 -- DEFINING_DESIGNATOR ::=
4135 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
4137 -------------------------------------
4138 -- 6.1 Defining Program Unit Name --
4139 -------------------------------------
4141 -- DEFINING_PROGRAM_UNIT_NAME ::=
4142 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
4144 -- The parent unit name is present only in the case of a child unit
4145 -- name (permissible only for Ada 95 for a library level unit, i.e.
4146 -- a unit at scope level one). If no such name is present, the defining
4147 -- program unit name is represented simply as the defining identifier.
4148 -- In the child unit case, the following node is used to represent the
4151 -- N_Defining_Program_Unit_Name
4152 -- Sloc points to period
4153 -- Name (Node2) holds the parent unit name. Note that this is always
4154 -- non-Empty, since this node is only used for the case where a
4155 -- parent unit name is present.
4156 -- Defining_Identifier (Node1)
4158 --------------------------
4159 -- 6.1 Operator Symbol --
4160 --------------------------
4162 -- OPERATOR_SYMBOL ::= STRING_LITERAL
4164 -- Note: the fields of the N_Operator_Symbol node are laid out to
4165 -- match the corresponding fields of an N_Character_Literal node. This
4166 -- allows easy conversion of the operator symbol node into a character
4167 -- literal node in the case where a string constant of the form of an
4168 -- operator symbol is scanned out as such, but turns out semantically
4169 -- to be a string literal that is not an operator. For details see
4170 -- Sinfo.CN.Change_Operator_Symbol_To_String_Literal.
4172 -- N_Operator_Symbol
4173 -- Sloc points to literal
4174 -- Chars (Name1) contains the Name_Id for the operator symbol
4175 -- Strval (Str3) Id of string value. This is used if the operator
4176 -- symbol turns out to be a normal string after all.
4177 -- Entity (Node4-Sem)
4178 -- Associated_Node (Node4-Sem)
4179 -- Has_Private_View (Flag11-Sem) set in generic units.
4180 -- Etype (Node5-Sem)
4182 -- Note: the Strval field may be set to No_String for generated
4183 -- operator symbols that are known not to be string literals
4186 -----------------------------------
4187 -- 6.1 Defining Operator Symbol --
4188 -----------------------------------
4190 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
4192 -- A defining operator symbol is an entity, which has additional
4193 -- fields depending on the setting of the Ekind field. These
4194 -- additional fields are defined (and access subprograms declared)
4195 -- in package Einfo.
4197 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
4198 -- are deliberately layed out to match the layout of fields in an
4199 -- ordinary N_Operator_Symbol node allowing for easy alteration of
4200 -- an operator symbol node into a defining operator symbol node.
4201 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
4202 -- for further details.
4204 -- N_Defining_Operator_Symbol
4205 -- Sloc points to literal
4206 -- Chars (Name1) contains the Name_Id for the operator symbol
4207 -- Next_Entity (Node2-Sem)
4208 -- Scope (Node3-Sem)
4209 -- Etype (Node5-Sem)
4211 ----------------------------
4212 -- 6.1 Parameter Profile --
4213 ----------------------------
4215 -- PARAMETER_PROFILE ::= [FORMAL_PART]
4217 ---------------------------------------
4218 -- 6.1 Parameter and Result Profile --
4219 ---------------------------------------
4221 -- PARAMETER_AND_RESULT_PROFILE ::=
4222 -- [FORMAL_PART] return [NULL_EXCLUSION] SUBTYPE_MARK
4223 -- | [FORMAL_PART] return ACCESS_DEFINITION
4225 -- There is no explicit node in the tree for a parameter and result
4226 -- profile. Instead the information appears directly in the parent.
4228 ----------------------
4229 -- 6.1 Formal part --
4230 ----------------------
4233 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
4235 ----------------------------------
4236 -- 6.1 Parameter specification --
4237 ----------------------------------
4239 -- PARAMETER_SPECIFICATION ::=
4240 -- DEFINING_IDENTIFIER_LIST : MODE [NULL_EXCLUSION] SUBTYPE_MARK
4241 -- [:= DEFAULT_EXPRESSION]
4242 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
4243 -- [:= DEFAULT_EXPRESSION]
4245 -- Although the syntax allows multiple identifiers in the list, the
4246 -- semantics is as though successive specifications were given with
4247 -- identical type definition and expression components. To simplify
4248 -- semantic processing, the parser represents a multiple declaration
4249 -- case as a sequence of single Specifications, using the More_Ids and
4250 -- Prev_Ids flags to preserve the original source form as described
4251 -- in the section on "Handling of Defining Identifier Lists".
4253 -- N_Parameter_Specification
4254 -- Sloc points to first identifier
4255 -- Defining_Identifier (Node1)
4256 -- In_Present (Flag15)
4257 -- Out_Present (Flag17)
4258 -- Null_Exclusion_Present (Flag11)
4259 -- Parameter_Type (Node2) subtype mark or access definition
4260 -- Expression (Node3) (set to Empty if no default expression present)
4261 -- Do_Accessibility_Check (Flag13-Sem)
4262 -- More_Ids (Flag5) (set to False if no more identifiers in list)
4263 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
4264 -- Default_Expression (Node5-Sem)
4270 -- MODE ::= [in] | in out | out
4272 -- There is no explicit node in the tree for the Mode. Instead the
4273 -- In_Present and Out_Present flags are set in the parent node to
4274 -- record the presence of keywords specifying the mode.
4276 --------------------------
4277 -- 6.3 Subprogram Body --
4278 --------------------------
4280 -- SUBPROGRAM_BODY ::=
4281 -- SUBPROGRAM_SPECIFICATION is
4284 -- HANDLED_SEQUENCE_OF_STATEMENTS
4285 -- end [DESIGNATOR];
4287 -- N_Subprogram_Body
4288 -- Sloc points to FUNCTION or PROCEDURE
4289 -- Specification (Node1)
4290 -- Declarations (List2)
4291 -- Handled_Statement_Sequence (Node4)
4292 -- Activation_Chain_Entity (Node3-Sem)
4293 -- Corresponding_Spec (Node5-Sem)
4294 -- Acts_As_Spec (Flag4-Sem)
4295 -- Bad_Is_Detected (Flag15) used only by parser
4296 -- Do_Storage_Check (Flag17-Sem)
4297 -- Has_Priority_Pragma (Flag6-Sem)
4298 -- Is_Protected_Subprogram_Body (Flag7-Sem)
4299 -- Is_Entry_Barrier_Function (Flag8-Sem)
4300 -- Is_Task_Master (Flag5-Sem)
4301 -- Was_Originally_Stub (Flag13-Sem)
4302 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
4304 -----------------------------------
4305 -- 6.4 Procedure Call Statement --
4306 -----------------------------------
4308 -- PROCEDURE_CALL_STATEMENT ::=
4309 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
4311 -- Note: the reason that a procedure call has expression fields is
4312 -- that it semantically resembles an expression, e.g. overloading is
4313 -- allowed and a type is concocted for semantic processing purposes.
4314 -- Certain of these fields, such as Parens are not relevant, but it
4315 -- is easier to just supply all of them together!
4317 -- N_Procedure_Call_Statement
4318 -- Sloc points to first token of name or prefix
4319 -- Name (Node2) stores name or prefix
4320 -- Parameter_Associations (List3) (set to No_List if no
4321 -- actual parameter part)
4322 -- First_Named_Actual (Node4-Sem)
4323 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4324 -- Do_Tag_Check (Flag13-Sem)
4325 -- No_Elaboration_Check (Flag14-Sem)
4326 -- Parameter_List_Truncated (Flag17-Sem)
4327 -- ABE_Is_Certain (Flag18-Sem)
4328 -- plus fields for expression
4330 -- If any IN parameter requires a range check, then the corresponding
4331 -- argument expression has the Do_Range_Check flag set, and the range
4332 -- check is done against the formal type. Note that this argument
4333 -- expression may appear directly in the Parameter_Associations list,
4334 -- or may be a descendent of an N_Parameter_Association node that
4335 -- appears in this list.
4337 ------------------------
4338 -- 6.4 Function Call --
4339 ------------------------
4341 -- FUNCTION_CALL ::=
4342 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
4344 -- Note: the parser may generate an indexed component node or simply
4345 -- a name node instead of a function call node. The semantic pass must
4346 -- correct this misidentification.
4349 -- Sloc points to first token of name or prefix
4350 -- Name (Node2) stores name or prefix
4351 -- Parameter_Associations (List3) (set to No_List if no
4352 -- actual parameter part)
4353 -- First_Named_Actual (Node4-Sem)
4354 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4355 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
4356 -- Do_Tag_Check (Flag13-Sem)
4357 -- No_Elaboration_Check (Flag14-Sem)
4358 -- Parameter_List_Truncated (Flag17-Sem)
4359 -- ABE_Is_Certain (Flag18-Sem)
4360 -- plus fields for expression
4362 --------------------------------
4363 -- 6.4 Actual Parameter Part --
4364 --------------------------------
4366 -- ACTUAL_PARAMETER_PART ::=
4367 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
4369 --------------------------------
4370 -- 6.4 Parameter Association --
4371 --------------------------------
4373 -- PARAMETER_ASSOCIATION ::=
4374 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
4376 -- Note: the N_Parameter_Association node is built only if a formal
4377 -- parameter selector name is present, otherwise the parameter
4378 -- association appears in the tree simply as the node for the
4379 -- explicit actual parameter.
4381 -- N_Parameter_Association
4382 -- Sloc points to formal parameter
4383 -- Selector_Name (Node2) (always non-Empty)
4384 -- Explicit_Actual_Parameter (Node3)
4385 -- Next_Named_Actual (Node4-Sem)
4387 ---------------------------
4388 -- 6.4 Actual Parameter --
4389 ---------------------------
4391 -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
4393 ---------------------------
4394 -- 6.5 Return Statement --
4395 ---------------------------
4397 -- RETURN_STATEMENT ::= return [EXPRESSION]; -- Ada 95
4399 -- In Ada 2005, we have:
4401 -- SIMPLE_RETURN_STATEMENT ::= return [EXPRESSION];
4403 -- EXTENDED_RETURN_STATEMENT ::=
4404 -- return DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
4405 -- [:= EXPRESSION] [do
4406 -- HANDLED_SEQUENCE_OF_STATEMENTS
4409 -- RETURN_SUBTYPE_INDICATION ::= SUBTYPE_INDICATION | ACCESS_DEFINITION
4411 -- So in Ada 2005, RETURN_STATEMENT is no longer a nonterminal, but
4412 -- "return statement" is defined in 6.5 to mean a
4413 -- SIMPLE_RETURN_STATEMENT or an EXTENDED_RETURN_STATEMENT.
4415 -- N_Return_Statement
4416 -- Sloc points to RETURN
4417 -- Return_Statement_Entity (Node5-Sem)
4418 -- Expression (Node3) (set to Empty if no expression present)
4419 -- Storage_Pool (Node1-Sem)
4420 -- Procedure_To_Call (Node2-Sem)
4421 -- Do_Tag_Check (Flag13-Sem)
4422 -- By_Ref (Flag5-Sem)
4423 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
4425 -- N_Return_Statement represents a simple_return_statement, and is
4426 -- renamed to be N_Simple_Return_Statement below. Clients should refer
4427 -- to N_Simple_Return_Statement. We retain N_Return_Statement because
4428 -- that's how gigi knows it. See also renaming of Make_Return_Statement
4429 -- as Make_Simple_Return_Statement in Sem_Util.
4431 -- Note: Return_Statement_Entity points to an E_Return_Statement
4433 -- If a range check is required, then Do_Range_Check is set on the
4434 -- Expression. The check is against the return subtype of the function.
4436 -- N_Extended_Return_Statement
4437 -- Sloc points to RETURN
4438 -- Return_Statement_Entity (Node5-Sem)
4439 -- Return_Object_Declarations (List3)
4440 -- Handled_Statement_Sequence (Node4) (set to Empty if not present)
4441 -- Storage_Pool (Node1-Sem)
4442 -- Procedure_To_Call (Node2-Sem)
4443 -- Do_Tag_Check (Flag13-Sem)
4444 -- By_Ref (Flag5-Sem)
4446 -- Note: Return_Statement_Entity points to an E_Return_Statement.
4447 -- Note that Return_Object_Declarations is a list containing the
4448 -- N_Object_Declaration -- see comment on this field above.
4449 -- The declared object will have Is_Return_Object = True.
4450 -- There is no such syntactic category as return_object_declaration
4451 -- in the RM. Return_Object_Declarations represents this portion of
4452 -- the syntax for EXTENDED_RETURN_STATEMENT:
4453 -- DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
4456 -- There are two entities associated with an extended_return_statement:
4457 -- the Return_Statement_Entity represents the statement itself, and the
4458 -- Defining_Identifier of the Object_Declaration in
4459 -- Return_Object_Declarations represents the object being
4460 -- returned. N_Simple_Return_Statement has only the former.
4462 ------------------------------
4463 -- 7.1 Package Declaration --
4464 ------------------------------
4466 -- PACKAGE_DECLARATION ::= PACKAGE_SPECIFICATION;
4468 -- Note: the activation chain entity for a package spec is used for
4469 -- all tasks declared in the package spec, or in the package body.
4471 -- N_Package_Declaration
4472 -- Sloc points to PACKAGE
4473 -- Specification (Node1)
4474 -- Corresponding_Body (Node5-Sem)
4475 -- Parent_Spec (Node4-Sem)
4476 -- Activation_Chain_Entity (Node3-Sem)
4478 --------------------------------
4479 -- 7.1 Package Specification --
4480 --------------------------------
4482 -- PACKAGE_SPECIFICATION ::=
4483 -- package DEFINING_PROGRAM_UNIT_NAME is
4484 -- {BASIC_DECLARATIVE_ITEM}
4486 -- {BASIC_DECLARATIVE_ITEM}]
4487 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
4489 -- N_Package_Specification
4490 -- Sloc points to PACKAGE
4491 -- Defining_Unit_Name (Node1)
4492 -- Visible_Declarations (List2)
4493 -- Private_Declarations (List3) (set to No_List if no private
4495 -- End_Label (Node4)
4496 -- Generic_Parent (Node5-Sem)
4497 -- Limited_View_Installed (Flag18-Sem)
4499 -----------------------
4500 -- 7.1 Package Body --
4501 -----------------------
4504 -- package body DEFINING_PROGRAM_UNIT_NAME is
4507 -- HANDLED_SEQUENCE_OF_STATEMENTS]
4508 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
4511 -- Sloc points to PACKAGE
4512 -- Defining_Unit_Name (Node1)
4513 -- Declarations (List2)
4514 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
4515 -- Corresponding_Spec (Node5-Sem)
4516 -- Was_Originally_Stub (Flag13-Sem)
4518 -- Note: if a source level package does not contain a handled sequence
4519 -- of statements, then the parser supplies a dummy one with a null
4520 -- sequence of statements. Comes_From_Source will be False in this
4521 -- constructed sequence. The reason we need this is for the End_Label
4522 -- field in the HSS.
4524 -----------------------------------
4525 -- 7.4 Private Type Declaration --
4526 -----------------------------------
4528 -- PRIVATE_TYPE_DECLARATION ::=
4529 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
4530 -- is [[abstract] tagged] [limited] private;
4532 -- Note: TAGGED is not permitted in Ada 83 mode
4534 -- N_Private_Type_Declaration
4535 -- Sloc points to TYPE
4536 -- Defining_Identifier (Node1)
4537 -- Discriminant_Specifications (List4) (set to No_List if no
4538 -- discriminant part)
4539 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4540 -- Abstract_Present (Flag4)
4541 -- Tagged_Present (Flag15)
4542 -- Limited_Present (Flag17)
4544 ----------------------------------------
4545 -- 7.4 Private Extension Declaration --
4546 ----------------------------------------
4548 -- PRIVATE_EXTENSION_DECLARATION ::=
4549 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
4550 -- [abstract] [limited | synchronized]
4551 -- new ancestor_SUBTYPE_INDICATION [and INTERFACE_LIST]
4554 -- Note: LIMITED, and private extension declarations are not allowed
4557 -- N_Private_Extension_Declaration
4558 -- Sloc points to TYPE
4559 -- Defining_Identifier (Node1)
4560 -- Discriminant_Specifications (List4) (set to No_List if no
4561 -- discriminant part)
4562 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4563 -- Abstract_Present (Flag4)
4564 -- Limited_Present (Flag17)
4565 -- Synchronized_Present (Flag7)
4566 -- Subtype_Indication (Node5)
4567 -- Interface_List (List2) (set to No_List if none)
4569 ---------------------
4570 -- 8.4 Use Clause --
4571 ---------------------
4573 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
4575 -----------------------------
4576 -- 8.4 Use Package Clause --
4577 -----------------------------
4579 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
4581 -- N_Use_Package_Clause
4582 -- Sloc points to USE
4584 -- Next_Use_Clause (Node3-Sem)
4585 -- Hidden_By_Use_Clause (Elist4-Sem)
4587 --------------------------
4588 -- 8.4 Use Type Clause --
4589 --------------------------
4591 -- USE_TYPE_CLAUSE ::= use type SUBTYPE_MARK {, SUBTYPE_MARK};
4593 -- Note: use type clause is not permitted in Ada 83 mode
4595 -- N_Use_Type_Clause
4596 -- Sloc points to USE
4597 -- Subtype_Marks (List2)
4598 -- Next_Use_Clause (Node3-Sem)
4599 -- Hidden_By_Use_Clause (Elist4-Sem)
4601 -------------------------------
4602 -- 8.5 Renaming Declaration --
4603 -------------------------------
4605 -- RENAMING_DECLARATION ::=
4606 -- OBJECT_RENAMING_DECLARATION
4607 -- | EXCEPTION_RENAMING_DECLARATION
4608 -- | PACKAGE_RENAMING_DECLARATION
4609 -- | SUBPROGRAM_RENAMING_DECLARATION
4610 -- | GENERIC_RENAMING_DECLARATION
4612 --------------------------------------
4613 -- 8.5 Object Renaming Declaration --
4614 --------------------------------------
4616 -- OBJECT_RENAMING_DECLARATION ::=
4617 -- DEFINING_IDENTIFIER :
4618 -- [NULL_EXCLUSION] SUBTYPE_MARK renames object_NAME;
4619 -- | DEFINING_IDENTIFIER :
4620 -- ACCESS_DEFINITION renames object_NAME;
4622 -- Note: Access_Definition is an optional field that gives support to
4623 -- Ada 2005 (AI-230). The parser generates nodes that have either the
4624 -- Subtype_Indication field or else the Access_Definition field.
4626 -- N_Object_Renaming_Declaration
4627 -- Sloc points to first identifier
4628 -- Defining_Identifier (Node1)
4629 -- Null_Exclusion_Present (Flag11) (set to False if not present)
4630 -- Subtype_Mark (Node4) (set to Empty if not present)
4631 -- Access_Definition (Node3) (set to Empty if not present)
4633 -- Corresponding_Generic_Association (Node5-Sem)
4635 -----------------------------------------
4636 -- 8.5 Exception Renaming Declaration --
4637 -----------------------------------------
4639 -- EXCEPTION_RENAMING_DECLARATION ::=
4640 -- DEFINING_IDENTIFIER : exception renames exception_NAME;
4642 -- N_Exception_Renaming_Declaration
4643 -- Sloc points to first identifier
4644 -- Defining_Identifier (Node1)
4647 ---------------------------------------
4648 -- 8.5 Package Renaming Declaration --
4649 ---------------------------------------
4651 -- PACKAGE_RENAMING_DECLARATION ::=
4652 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME;
4654 -- N_Package_Renaming_Declaration
4655 -- Sloc points to PACKAGE
4656 -- Defining_Unit_Name (Node1)
4658 -- Parent_Spec (Node4-Sem)
4660 ------------------------------------------
4661 -- 8.5 Subprogram Renaming Declaration --
4662 ------------------------------------------
4664 -- SUBPROGRAM_RENAMING_DECLARATION ::=
4665 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME;
4667 -- N_Subprogram_Renaming_Declaration
4668 -- Sloc points to RENAMES
4669 -- Specification (Node1)
4671 -- Parent_Spec (Node4-Sem)
4672 -- Corresponding_Spec (Node5-Sem)
4673 -- Corresponding_Formal_Spec (Node3-Sem)
4674 -- From_Default (Flag6-Sem)
4676 -----------------------------------------
4677 -- 8.5.5 Generic Renaming Declaration --
4678 -----------------------------------------
4680 -- GENERIC_RENAMING_DECLARATION ::=
4681 -- generic package DEFINING_PROGRAM_UNIT_NAME
4682 -- renames generic_package_NAME
4683 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
4684 -- renames generic_procedure_NAME
4685 -- | generic function DEFINING_PROGRAM_UNIT_NAME
4686 -- renames generic_function_NAME
4688 -- N_Generic_Package_Renaming_Declaration
4689 -- Sloc points to GENERIC
4690 -- Defining_Unit_Name (Node1)
4692 -- Parent_Spec (Node4-Sem)
4694 -- N_Generic_Procedure_Renaming_Declaration
4695 -- Sloc points to GENERIC
4696 -- Defining_Unit_Name (Node1)
4698 -- Parent_Spec (Node4-Sem)
4700 -- N_Generic_Function_Renaming_Declaration
4701 -- Sloc points to GENERIC
4702 -- Defining_Unit_Name (Node1)
4704 -- Parent_Spec (Node4-Sem)
4706 --------------------------------
4707 -- 9.1 Task Type Declaration --
4708 --------------------------------
4710 -- TASK_TYPE_DECLARATION ::=
4711 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4712 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
4714 -- N_Task_Type_Declaration
4715 -- Sloc points to TASK
4716 -- Defining_Identifier (Node1)
4717 -- Discriminant_Specifications (List4) (set to No_List if no
4718 -- discriminant part)
4719 -- Interface_List (List2) (set to No_List if none)
4720 -- Task_Definition (Node3) (set to Empty if not present)
4721 -- Corresponding_Body (Node5-Sem)
4723 ----------------------------------
4724 -- 9.1 Single Task Declaration --
4725 ----------------------------------
4727 -- SINGLE_TASK_DECLARATION ::=
4728 -- task DEFINING_IDENTIFIER
4729 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
4731 -- N_Single_Task_Declaration
4732 -- Sloc points to TASK
4733 -- Defining_Identifier (Node1)
4734 -- Interface_List (List2) (set to No_List if none)
4735 -- Task_Definition (Node3) (set to Empty if not present)
4737 --------------------------
4738 -- 9.1 Task Definition --
4739 --------------------------
4741 -- TASK_DEFINITION ::=
4745 -- end [task_IDENTIFIER]
4747 -- Note: as a result of semantic analysis, the list of task items can
4748 -- include implicit type declarations resulting from entry families.
4750 -- N_Task_Definition
4751 -- Sloc points to first token of task definition
4752 -- Visible_Declarations (List2)
4753 -- Private_Declarations (List3) (set to No_List if no private part)
4754 -- End_Label (Node4)
4755 -- Has_Priority_Pragma (Flag6-Sem)
4756 -- Has_Storage_Size_Pragma (Flag5-Sem)
4757 -- Has_Task_Info_Pragma (Flag7-Sem)
4758 -- Has_Task_Name_Pragma (Flag8-Sem)
4759 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
4761 --------------------
4763 --------------------
4765 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
4767 --------------------
4769 --------------------
4772 -- task body task_DEFINING_IDENTIFIER is
4775 -- HANDLED_SEQUENCE_OF_STATEMENTS
4776 -- end [task_IDENTIFIER];
4778 -- Gigi restriction: This node never appears
4781 -- Sloc points to TASK
4782 -- Defining_Identifier (Node1)
4783 -- Declarations (List2)
4784 -- Handled_Statement_Sequence (Node4)
4785 -- Is_Task_Master (Flag5-Sem)
4786 -- Activation_Chain_Entity (Node3-Sem)
4787 -- Corresponding_Spec (Node5-Sem)
4788 -- Was_Originally_Stub (Flag13-Sem)
4790 -------------------------------------
4791 -- 9.4 Protected Type Declaration --
4792 -------------------------------------
4794 -- PROTECTED_TYPE_DECLARATION ::=
4795 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4796 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
4798 -- Note: protected type declarations are not permitted in Ada 83 mode
4800 -- N_Protected_Type_Declaration
4801 -- Sloc points to PROTECTED
4802 -- Defining_Identifier (Node1)
4803 -- Discriminant_Specifications (List4) (set to No_List if no
4804 -- discriminant part)
4805 -- Interface_List (List2) (set to No_List if none)
4806 -- Protected_Definition (Node3)
4807 -- Corresponding_Body (Node5-Sem)
4809 ---------------------------------------
4810 -- 9.4 Single Protected Declaration --
4811 ---------------------------------------
4813 -- SINGLE_PROTECTED_DECLARATION ::=
4814 -- protected DEFINING_IDENTIFIER
4815 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
4817 -- Note: single protected declarations are not allowed in Ada 83 mode
4819 -- N_Single_Protected_Declaration
4820 -- Sloc points to PROTECTED
4821 -- Defining_Identifier (Node1)
4822 -- Interface_List (List2) (set to No_List if none)
4823 -- Protected_Definition (Node3)
4825 -------------------------------
4826 -- 9.4 Protected Definition --
4827 -------------------------------
4829 -- PROTECTED_DEFINITION ::=
4830 -- {PROTECTED_OPERATION_DECLARATION}
4832 -- {PROTECTED_ELEMENT_DECLARATION}]
4833 -- end [protected_IDENTIFIER]
4835 -- N_Protected_Definition
4836 -- Sloc points to first token of protected definition
4837 -- Visible_Declarations (List2)
4838 -- Private_Declarations (List3) (set to No_List if no private part)
4839 -- End_Label (Node4)
4840 -- Has_Priority_Pragma (Flag6-Sem)
4842 ------------------------------------------
4843 -- 9.4 Protected Operation Declaration --
4844 ------------------------------------------
4846 -- PROTECTED_OPERATION_DECLARATION ::=
4847 -- SUBPROGRAM_DECLARATION
4848 -- | ENTRY_DECLARATION
4849 -- | REPRESENTATION_CLAUSE
4851 ----------------------------------------
4852 -- 9.4 Protected Element Declaration --
4853 ----------------------------------------
4855 -- PROTECTED_ELEMENT_DECLARATION ::=
4856 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
4858 -------------------------
4859 -- 9.4 Protected Body --
4860 -------------------------
4862 -- PROTECTED_BODY ::=
4863 -- protected body DEFINING_IDENTIFIER is
4864 -- {PROTECTED_OPERATION_ITEM}
4865 -- end [protected_IDENTIFIER];
4867 -- Note: protected bodies are not allowed in Ada 83 mode
4869 -- Gigi restriction: This node never appears
4872 -- Sloc points to PROTECTED
4873 -- Defining_Identifier (Node1)
4874 -- Declarations (List2) protected operation items (and pragmas)
4875 -- End_Label (Node4)
4876 -- Corresponding_Spec (Node5-Sem)
4877 -- Was_Originally_Stub (Flag13-Sem)
4879 -----------------------------------
4880 -- 9.4 Protected Operation Item --
4881 -----------------------------------
4883 -- PROTECTED_OPERATION_ITEM ::=
4884 -- SUBPROGRAM_DECLARATION
4885 -- | SUBPROGRAM_BODY
4887 -- | REPRESENTATION_CLAUSE
4889 ------------------------------
4890 -- 9.5.2 Entry Declaration --
4891 ------------------------------
4893 -- ENTRY_DECLARATION ::=
4894 -- [[not] overriding]
4895 -- entry DEFINING_IDENTIFIER
4896 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE;
4898 -- N_Entry_Declaration
4899 -- Sloc points to ENTRY
4900 -- Defining_Identifier (Node1)
4901 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
4902 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4903 -- Corresponding_Body (Node5-Sem)
4904 -- Must_Override (Flag14) set if overriding indicator present
4905 -- Must_Not_Override (Flag15) set if not_overriding indicator present
4907 -- Note: overriding indicator is an Ada 2005 feature
4909 -----------------------------
4910 -- 9.5.2 Accept statement --
4911 -----------------------------
4913 -- ACCEPT_STATEMENT ::=
4914 -- accept entry_DIRECT_NAME
4915 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
4916 -- HANDLED_SEQUENCE_OF_STATEMENTS
4917 -- end [entry_IDENTIFIER]];
4919 -- Gigi restriction: This node never appears
4921 -- Note: there are no explicit declarations allowed in an accept
4922 -- statement. However, the implicit declarations for any statement
4923 -- identifiers (labels and block/loop identifiers) are declarations
4924 -- that belong logically to the accept statement, and that is why
4925 -- there is a Declarations field in this node.
4927 -- N_Accept_Statement
4928 -- Sloc points to ACCEPT
4929 -- Entry_Direct_Name (Node1)
4930 -- Entry_Index (Node5) (set to Empty if not present)
4931 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4932 -- Handled_Statement_Sequence (Node4)
4933 -- Declarations (List2) (set to No_List if no declarations)
4935 ------------------------
4936 -- 9.5.2 Entry Index --
4937 ------------------------
4939 -- ENTRY_INDEX ::= EXPRESSION
4941 -----------------------
4942 -- 9.5.2 Entry Body --
4943 -----------------------
4946 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
4949 -- HANDLED_SEQUENCE_OF_STATEMENTS
4950 -- end [entry_IDENTIFIER];
4952 -- ENTRY_BARRIER ::= when CONDITION
4954 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
4955 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
4956 -- too full (it would otherwise have too many fields)
4958 -- Gigi restriction: This node never appears
4961 -- Sloc points to ENTRY
4962 -- Defining_Identifier (Node1)
4963 -- Entry_Body_Formal_Part (Node5)
4964 -- Declarations (List2)
4965 -- Handled_Statement_Sequence (Node4)
4966 -- Activation_Chain_Entity (Node3-Sem)
4968 -----------------------------------
4969 -- 9.5.2 Entry Body Formal Part --
4970 -----------------------------------
4972 -- ENTRY_BODY_FORMAL_PART ::=
4973 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
4975 -- Note that an entry body formal part node is present even if it is
4976 -- empty. This reflects the grammar, in which it is the components of
4977 -- the entry body formal part that are optional, not the entry body
4978 -- formal part itself. Also this means that the barrier condition
4979 -- always has somewhere to be stored.
4981 -- Gigi restriction: This node never appears
4983 -- N_Entry_Body_Formal_Part
4984 -- Sloc points to first token
4985 -- Entry_Index_Specification (Node4) (set to Empty if not present)
4986 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4987 -- Condition (Node1) from entry barrier of entry body
4989 --------------------------
4990 -- 9.5.2 Entry Barrier --
4991 --------------------------
4993 -- ENTRY_BARRIER ::= when CONDITION
4995 --------------------------------------
4996 -- 9.5.2 Entry Index Specification --
4997 --------------------------------------
4999 -- ENTRY_INDEX_SPECIFICATION ::=
5000 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
5002 -- Gigi restriction: This node never appears
5004 -- N_Entry_Index_Specification
5005 -- Sloc points to FOR
5006 -- Defining_Identifier (Node1)
5007 -- Discrete_Subtype_Definition (Node4)
5009 ---------------------------------
5010 -- 9.5.3 Entry Call Statement --
5011 ---------------------------------
5013 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
5015 -- The parser may generate a procedure call for this construct. The
5016 -- semantic pass must correct this misidentification where needed.
5018 -- Gigi restriction: This node never appears
5020 -- N_Entry_Call_Statement
5021 -- Sloc points to first token of name
5023 -- Parameter_Associations (List3) (set to No_List if no
5024 -- actual parameter part)
5025 -- First_Named_Actual (Node4-Sem)
5027 ------------------------------
5028 -- 9.5.4 Requeue Statement --
5029 ------------------------------
5031 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
5033 -- Note: requeue statements are not permitted in Ada 83 mode
5035 -- Gigi restriction: This node never appears
5037 -- N_Requeue_Statement
5038 -- Sloc points to REQUEUE
5040 -- Abort_Present (Flag15)
5042 --------------------------
5043 -- 9.6 Delay Statement --
5044 --------------------------
5046 -- DELAY_STATEMENT ::=
5047 -- DELAY_UNTIL_STATEMENT
5048 -- | DELAY_RELATIVE_STATEMENT
5050 --------------------------------
5051 -- 9.6 Delay Until Statement --
5052 --------------------------------
5054 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
5056 -- Note: delay until statements are not permitted in Ada 83 mode
5058 -- Gigi restriction: This node never appears
5060 -- N_Delay_Until_Statement
5061 -- Sloc points to DELAY
5062 -- Expression (Node3)
5064 -----------------------------------
5065 -- 9.6 Delay Relative Statement --
5066 -----------------------------------
5068 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
5070 -- Gigi restriction: This node never appears
5072 -- N_Delay_Relative_Statement
5073 -- Sloc points to DELAY
5074 -- Expression (Node3)
5076 ---------------------------
5077 -- 9.7 Select Statement --
5078 ---------------------------
5080 -- SELECT_STATEMENT ::=
5082 -- | TIMED_ENTRY_CALL
5083 -- | CONDITIONAL_ENTRY_CALL
5084 -- | ASYNCHRONOUS_SELECT
5086 -----------------------------
5087 -- 9.7.1 Selective Accept --
5088 -----------------------------
5090 -- SELECTIVE_ACCEPT ::=
5093 -- SELECT_ALTERNATIVE
5096 -- SELECT_ALTERNATIVE}
5098 -- SEQUENCE_OF_STATEMENTS]
5101 -- Gigi restriction: This node never appears
5103 -- Note: the guard expression, if present, appears in the node for
5104 -- the select alternative.
5106 -- N_Selective_Accept
5107 -- Sloc points to SELECT
5108 -- Select_Alternatives (List1)
5109 -- Else_Statements (List4) (set to No_List if no else part)
5115 -- GUARD ::= when CONDITION =>
5117 -- As noted above, the CONDITION that is part of a GUARD is included
5118 -- in the node for the select alternative for convenience.
5120 -------------------------------
5121 -- 9.7.1 Select Alternative --
5122 -------------------------------
5124 -- SELECT_ALTERNATIVE ::=
5125 -- ACCEPT_ALTERNATIVE
5126 -- | DELAY_ALTERNATIVE
5127 -- | TERMINATE_ALTERNATIVE
5129 -------------------------------
5130 -- 9.7.1 Accept Alternative --
5131 -------------------------------
5133 -- ACCEPT_ALTERNATIVE ::=
5134 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
5136 -- Gigi restriction: This node never appears
5138 -- N_Accept_Alternative
5139 -- Sloc points to ACCEPT
5140 -- Accept_Statement (Node2)
5141 -- Condition (Node1) from the guard (set to Empty if no guard present)
5142 -- Statements (List3) (set to Empty_List if no statements)
5143 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5144 -- Accept_Handler_Records (List5-Sem)
5146 ------------------------------
5147 -- 9.7.1 Delay Alternative --
5148 ------------------------------
5150 -- DELAY_ALTERNATIVE ::=
5151 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
5153 -- Gigi restriction: This node never appears
5155 -- N_Delay_Alternative
5156 -- Sloc points to DELAY
5157 -- Delay_Statement (Node2)
5158 -- Condition (Node1) from the guard (set to Empty if no guard present)
5159 -- Statements (List3) (set to Empty_List if no statements)
5160 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5162 ----------------------------------
5163 -- 9.7.1 Terminate Alternative --
5164 ----------------------------------
5166 -- TERMINATE_ALTERNATIVE ::= terminate;
5168 -- Gigi restriction: This node never appears
5170 -- N_Terminate_Alternative
5171 -- Sloc points to TERMINATE
5172 -- Condition (Node1) from the guard (set to Empty if no guard present)
5173 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5174 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
5176 -----------------------------
5177 -- 9.7.2 Timed Entry Call --
5178 -----------------------------
5180 -- TIMED_ENTRY_CALL ::=
5182 -- ENTRY_CALL_ALTERNATIVE
5184 -- DELAY_ALTERNATIVE
5187 -- Gigi restriction: This node never appears
5189 -- N_Timed_Entry_Call
5190 -- Sloc points to SELECT
5191 -- Entry_Call_Alternative (Node1)
5192 -- Delay_Alternative (Node4)
5194 -----------------------------------
5195 -- 9.7.2 Entry Call Alternative --
5196 -----------------------------------
5198 -- ENTRY_CALL_ALTERNATIVE ::=
5199 -- PROCEDURE_OR_ENTRY_CALL [SEQUENCE_OF_STATEMENTS]
5201 -- PROCEDURE_OR_ENTRY_CALL ::=
5202 -- PROCEDURE_CALL_STATEMENT | ENTRY_CALL_STATEMENT
5204 -- Gigi restriction: This node never appears
5206 -- N_Entry_Call_Alternative
5207 -- Sloc points to first token of entry call statement
5208 -- Entry_Call_Statement (Node1)
5209 -- Statements (List3) (set to Empty_List if no statements)
5210 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5212 -----------------------------------
5213 -- 9.7.3 Conditional Entry Call --
5214 -----------------------------------
5216 -- CONDITIONAL_ENTRY_CALL ::=
5218 -- ENTRY_CALL_ALTERNATIVE
5220 -- SEQUENCE_OF_STATEMENTS
5223 -- Gigi restriction: This node never appears
5225 -- N_Conditional_Entry_Call
5226 -- Sloc points to SELECT
5227 -- Entry_Call_Alternative (Node1)
5228 -- Else_Statements (List4)
5230 --------------------------------
5231 -- 9.7.4 Asynchronous Select --
5232 --------------------------------
5234 -- ASYNCHRONOUS_SELECT ::=
5236 -- TRIGGERING_ALTERNATIVE
5241 -- Note: asynchronous select is not permitted in Ada 83 mode
5243 -- Gigi restriction: This node never appears
5245 -- N_Asynchronous_Select
5246 -- Sloc points to SELECT
5247 -- Triggering_Alternative (Node1)
5248 -- Abortable_Part (Node2)
5250 -----------------------------------
5251 -- 9.7.4 Triggering Alternative --
5252 -----------------------------------
5254 -- TRIGGERING_ALTERNATIVE ::=
5255 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
5257 -- Gigi restriction: This node never appears
5259 -- N_Triggering_Alternative
5260 -- Sloc points to first token of triggering statement
5261 -- Triggering_Statement (Node1)
5262 -- Statements (List3) (set to Empty_List if no statements)
5263 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5265 ---------------------------------
5266 -- 9.7.4 Triggering Statement --
5267 ---------------------------------
5269 -- TRIGGERING_STATEMENT ::= PROCEDURE_OR_ENTRY_CALL | DELAY_STATEMENT
5271 ---------------------------
5272 -- 9.7.4 Abortable Part --
5273 ---------------------------
5275 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
5277 -- Gigi restriction: This node never appears
5280 -- Sloc points to ABORT
5281 -- Statements (List3)
5283 --------------------------
5284 -- 9.8 Abort Statement --
5285 --------------------------
5287 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
5289 -- Gigi restriction: This node never appears
5291 -- N_Abort_Statement
5292 -- Sloc points to ABORT
5295 -------------------------
5296 -- 10.1.1 Compilation --
5297 -------------------------
5299 -- COMPILATION ::= {COMPILATION_UNIT}
5301 -- There is no explicit node in the tree for a compilation, since in
5302 -- general the compiler is processing only a single compilation unit
5303 -- at a time. It is possible to parse multiple units in syntax check
5304 -- only mode, but they the trees are discarded in any case.
5306 ------------------------------
5307 -- 10.1.1 Compilation Unit --
5308 ------------------------------
5310 -- COMPILATION_UNIT ::=
5311 -- CONTEXT_CLAUSE LIBRARY_ITEM
5312 -- | CONTEXT_CLAUSE SUBUNIT
5314 -- The N_Compilation_Unit node itself represents the above syntax.
5315 -- However, there are two additional items not reflected in the above
5316 -- syntax. First we have the global declarations that are added by the
5317 -- code generator. These are outer level declarations (so they cannot
5318 -- be represented as being inside the units). An example is the wrapper
5319 -- subprograms that are created to do ABE checking. As always a list of
5320 -- declarations can contain actions as well (i.e. statements), and such
5321 -- statements are executed as part of the elaboration of the unit. Note
5322 -- that all such declarations are elaborated before the library unit.
5324 -- Similarly, certain actions need to be elaborated at the completion
5325 -- of elaboration of the library unit (notably the statement that sets
5326 -- the Boolean flag indicating that elaboration is complete).
5328 -- The third item not reflected in the syntax is pragmas that appear
5329 -- after the compilation unit. As always pragmas are a problem since
5330 -- they are not part of the formal syntax, but can be stuck into the
5331 -- source following a set of ad hoc rules, and we have to find an ad
5332 -- hoc way of sticking them into the tree. For pragmas that appear
5333 -- before the library unit, we just consider them to be part of the
5334 -- context clause, and pragmas can appear in the Context_Items list
5335 -- of the compilation unit. However, pragmas can also appear after
5336 -- the library item.
5338 -- To deal with all these problems, we create an auxiliary node for
5339 -- a compilation unit, referenced from the N_Compilation_Unit node
5340 -- that contains these three items.
5342 -- N_Compilation_Unit
5343 -- Sloc points to first token of defining unit name
5344 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
5345 -- Context_Items (List1) context items and pragmas preceding unit
5346 -- Private_Present (Flag15) set if library unit has private keyword
5347 -- Unit (Node2) library item or subunit
5348 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
5349 -- Has_No_Elaboration_Code (Flag17-Sem)
5350 -- Body_Required (Flag13-Sem) set for spec if body is required
5351 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
5352 -- First_Inlined_Subprogram (Node3-Sem)
5354 -- N_Compilation_Unit_Aux
5355 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
5356 -- Declarations (List2) (set to No_List if no global declarations)
5357 -- Actions (List1) (set to No_List if no actions)
5358 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
5359 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
5361 --------------------------
5362 -- 10.1.1 Library Item --
5363 --------------------------
5366 -- [private] LIBRARY_UNIT_DECLARATION
5367 -- | LIBRARY_UNIT_BODY
5368 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
5370 -- Note: PRIVATE is not allowed in Ada 83 mode
5372 -- There is no explicit node in the tree for library item, instead
5373 -- the declaration or body, and the flag for private if present,
5374 -- appear in the N_Compilation_Unit clause.
5376 --------------------------------------
5377 -- 10.1.1 Library Unit Declaration --
5378 --------------------------------------
5380 -- LIBRARY_UNIT_DECLARATION ::=
5381 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
5382 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
5384 -----------------------------------------------
5385 -- 10.1.1 Library Unit Renaming Declaration --
5386 -----------------------------------------------
5388 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
5389 -- PACKAGE_RENAMING_DECLARATION
5390 -- | GENERIC_RENAMING_DECLARATION
5391 -- | SUBPROGRAM_RENAMING_DECLARATION
5393 -------------------------------
5394 -- 10.1.1 Library unit body --
5395 -------------------------------
5397 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
5399 ------------------------------
5400 -- 10.1.1 Parent Unit Name --
5401 ------------------------------
5403 -- PARENT_UNIT_NAME ::= NAME
5405 ----------------------------
5406 -- 10.1.2 Context clause --
5407 ----------------------------
5409 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
5411 -- The context clause can include pragmas, and any pragmas that appear
5412 -- before the context clause proper (i.e. all configuration pragmas,
5413 -- also appear at the front of this list).
5415 --------------------------
5416 -- 10.1.2 Context_Item --
5417 --------------------------
5419 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
5421 -------------------------
5422 -- 10.1.2 With clause --
5423 -------------------------
5426 -- with library_unit_NAME {,library_unit_NAME};
5428 -- A separate With clause is built for each name, so that we have
5429 -- a Corresponding_Spec field for each with'ed spec. The flags
5430 -- First_Name and Last_Name are used to reconstruct the exact
5431 -- source form. When a list of names appears in one with clause,
5432 -- the first name in the list has First_Name set, and the last
5433 -- has Last_Name set. If the with clause has only one name, then
5434 -- both of the flags First_Name and Last_Name are set in this name.
5436 -- Note: in the case of implicit with's that are installed by the
5437 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
5438 -- set to Standard_Location, but it is incorrect to test the Sloc
5439 -- to find out if a with clause is implicit, test the flag instead.
5442 -- Sloc points to first token of library unit name
5444 -- Library_Unit (Node4-Sem)
5445 -- Corresponding_Spec (Node5-Sem)
5446 -- First_Name (Flag5) (set to True if first name or only one name)
5447 -- Last_Name (Flag6) (set to True if last name or only one name)
5448 -- Context_Installed (Flag13-Sem)
5449 -- Elaborate_Present (Flag4-Sem)
5450 -- Elaborate_All_Present (Flag14-Sem)
5451 -- Elaborate_All_Desirable (Flag9-Sem)
5452 -- Elaborate_Desirable (Flag11-Sem)
5453 -- Private_Present (Flag15) set if with_clause has private keyword
5454 -- Implicit_With (Flag16-Sem)
5455 -- Limited_Present (Flag17) set if LIMITED is present
5456 -- Limited_View_Installed (Flag18-Sem)
5457 -- Unreferenced_In_Spec (Flag7-Sem)
5458 -- No_Entities_Ref_In_Spec (Flag8-Sem)
5460 -- Note: Limited_Present and Limited_View_Installed give support to
5461 -- Ada 2005 (AI-50217).
5462 -- Similarly, Private_Present gives support to AI-50262.
5464 ----------------------
5465 -- With_Type clause --
5466 ----------------------
5468 -- This is a GNAT extension, used to implement mutually recursive
5469 -- types declared in different packages.
5470 -- Note: this is now obsolete. The functionality of this construct
5471 -- is now implemented by the Ada 2005 Limited_with_Clause.
5473 ---------------------
5474 -- 10.2 Body stub --
5475 ---------------------
5478 -- SUBPROGRAM_BODY_STUB
5479 -- | PACKAGE_BODY_STUB
5481 -- | PROTECTED_BODY_STUB
5483 ----------------------------------
5484 -- 10.1.3 Subprogram Body Stub --
5485 ----------------------------------
5487 -- SUBPROGRAM_BODY_STUB ::=
5488 -- SUBPROGRAM_SPECIFICATION is separate;
5490 -- N_Subprogram_Body_Stub
5491 -- Sloc points to FUNCTION or PROCEDURE
5492 -- Specification (Node1)
5493 -- Library_Unit (Node4-Sem) points to the subunit
5494 -- Corresponding_Body (Node5-Sem)
5496 -------------------------------
5497 -- 10.1.3 Package Body Stub --
5498 -------------------------------
5500 -- PACKAGE_BODY_STUB ::=
5501 -- package body DEFINING_IDENTIFIER is separate;
5503 -- N_Package_Body_Stub
5504 -- Sloc points to PACKAGE
5505 -- Defining_Identifier (Node1)
5506 -- Library_Unit (Node4-Sem) points to the subunit
5507 -- Corresponding_Body (Node5-Sem)
5509 ----------------------------
5510 -- 10.1.3 Task Body Stub --
5511 ----------------------------
5513 -- TASK_BODY_STUB ::=
5514 -- task body DEFINING_IDENTIFIER is separate;
5517 -- Sloc points to TASK
5518 -- Defining_Identifier (Node1)
5519 -- Library_Unit (Node4-Sem) points to the subunit
5520 -- Corresponding_Body (Node5-Sem)
5522 ---------------------------------
5523 -- 10.1.3 Protected Body Stub --
5524 ---------------------------------
5526 -- PROTECTED_BODY_STUB ::=
5527 -- protected body DEFINING_IDENTIFIER is separate;
5529 -- Note: protected body stubs are not allowed in Ada 83 mode
5531 -- N_Protected_Body_Stub
5532 -- Sloc points to PROTECTED
5533 -- Defining_Identifier (Node1)
5534 -- Library_Unit (Node4-Sem) points to the subunit
5535 -- Corresponding_Body (Node5-Sem)
5537 ---------------------
5538 -- 10.1.3 Subunit --
5539 ---------------------
5541 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
5544 -- Sloc points to SEPARATE
5545 -- Name (Node2) is the name of the parent unit
5546 -- Proper_Body (Node1) is the subunit body
5547 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
5549 ---------------------------------
5550 -- 11.1 Exception Declaration --
5551 ---------------------------------
5553 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception;
5555 -- For consistency with object declarations etc., the parser converts
5556 -- the case of multiple identifiers being declared to a series of
5557 -- declarations in which the expression is copied, using the More_Ids
5558 -- and Prev_Ids flags to remember the source form as described in the
5559 -- section on "Handling of Defining Identifier Lists".
5561 -- N_Exception_Declaration
5562 -- Sloc points to EXCEPTION
5563 -- Defining_Identifier (Node1)
5564 -- Expression (Node3-Sem)
5565 -- Renaming_Exception (Node2-Sem)
5566 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5567 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5569 ------------------------------------------
5570 -- 11.2 Handled Sequence Of Statements --
5571 ------------------------------------------
5573 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
5574 -- SEQUENCE_OF_STATEMENTS
5576 -- EXCEPTION_HANDLER
5577 -- {EXCEPTION_HANDLER}]
5579 -- cleanup_procedure_call (param, param, param, ...);]
5581 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
5582 -- used only internally currently, but is considered to be syntactic.
5583 -- At the moment, the only cleanup action allowed is a single call to
5584 -- a parameterless procedure, and the Identifier field of the node is
5585 -- the procedure to be called. Also there is a current restriction
5586 -- that exception handles and a cleanup cannot be present in the same
5587 -- frame, so at least one of Exception_Handlers or the Identifier must
5590 -- Actually, more accurately, this restriction applies to the original
5591 -- source program. In the expanded tree, if the At_End_Proc field is
5592 -- present, then there will also be an exception handler of the form:
5594 -- when all others =>
5598 -- where cleanup is the procedure to be generated. The reason we do
5599 -- this is so that the front end can handle the necessary entries in
5600 -- the exception tables, and other exception handler actions required
5601 -- as part of the normal handling for exception handlers.
5603 -- The AT END cleanup handler protects only the sequence of statements
5604 -- (not the associated declarations of the parent), just like exception
5605 -- handlers. The big difference is that the cleanup procedure is called
5606 -- on either a normal or an abnormal exit from the statement sequence.
5608 -- Note: the list of Exception_Handlers can contain pragmas as well
5609 -- as actual handlers. In practice these pragmas can only occur at
5610 -- the start of the list, since any pragmas occurring later on will
5611 -- be included in the statement list of the corresponding handler.
5613 -- Note: although in the Ada syntax, the sequence of statements in
5614 -- a handled sequence of statements can only contain statements, we
5615 -- allow free mixing of declarations and statements in the resulting
5616 -- expanded tree. This is for example used to deal with the case of
5617 -- a cleanup procedure that must handle declarations as well as the
5618 -- statements of a block.
5620 -- N_Handled_Sequence_Of_Statements
5621 -- Sloc points to first token of first statement
5622 -- Statements (List3)
5623 -- End_Label (Node4) (set to Empty if expander generated)
5624 -- Exception_Handlers (List5) (set to No_List if none present)
5625 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
5626 -- First_Real_Statement (Node2-Sem)
5627 -- Zero_Cost_Handling (Flag5-Sem)
5629 -- Note: the parent always contains a Declarations field which contains
5630 -- declarations associated with the handled sequence of statements. This
5631 -- is true even in the case of an accept statement (see description of
5632 -- the N_Accept_Statement node).
5634 -- End_Label refers to the containing construct
5636 -----------------------------
5637 -- 11.2 Exception Handler --
5638 -----------------------------
5640 -- EXCEPTION_HANDLER ::=
5641 -- when [CHOICE_PARAMETER_SPECIFICATION :]
5642 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
5643 -- SEQUENCE_OF_STATEMENTS
5645 -- Note: choice parameter specification is not allowed in Ada 83 mode
5647 -- N_Exception_Handler
5648 -- Sloc points to WHEN
5649 -- Choice_Parameter (Node2) (set to Empty if not present)
5650 -- Exception_Choices (List4)
5651 -- Statements (List3)
5652 -- Exception_Label (Node5-Sem) (set to Empty of not present)
5653 -- Zero_Cost_Handling (Flag5-Sem)
5654 -- Local_Raise_Statements (Elist1-Sem) (set to No_Elist if not present)
5655 -- Local_Raise_Not_OK (Flag7-Sem)
5656 -- Has_Local_Raise (Flag8-Sem)
5658 ------------------------------------------
5659 -- 11.2 Choice parameter specification --
5660 ------------------------------------------
5662 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
5664 ----------------------------
5665 -- 11.2 Exception Choice --
5666 ----------------------------
5668 -- EXCEPTION_CHOICE ::= exception_NAME | others
5670 -- Except in the case of OTHERS, no explicit node appears in the tree
5671 -- for exception choice. Instead the exception name appears directly.
5672 -- An OTHERS choice is represented by a N_Others_Choice node (see
5675 -- Note: for the exception choice created for an at end handler, the
5676 -- exception choice is an N_Others_Choice node with All_Others set.
5678 ---------------------------
5679 -- 11.3 Raise Statement --
5680 ---------------------------
5682 -- RAISE_STATEMENT ::= raise [exception_NAME];
5684 -- In Ada 2005, we have
5686 -- RAISE_STATEMENT ::= raise; | raise exception_NAME [with EXPRESSION];
5688 -- N_Raise_Statement
5689 -- Sloc points to RAISE
5690 -- Name (Node2) (set to Empty if no exception name present)
5691 -- Expression (Node3) (set to Empty if no expression present)
5692 -- From_At_End (Flag4-Sem)
5694 -------------------------------
5695 -- 12.1 Generic Declaration --
5696 -------------------------------
5698 -- GENERIC_DECLARATION ::=
5699 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
5701 ------------------------------------------
5702 -- 12.1 Generic Subprogram Declaration --
5703 ------------------------------------------
5705 -- GENERIC_SUBPROGRAM_DECLARATION ::=
5706 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION;
5708 -- Note: Generic_Formal_Declarations can include pragmas
5710 -- N_Generic_Subprogram_Declaration
5711 -- Sloc points to GENERIC
5712 -- Specification (Node1) subprogram specification
5713 -- Corresponding_Body (Node5-Sem)
5714 -- Generic_Formal_Declarations (List2) from generic formal part
5715 -- Parent_Spec (Node4-Sem)
5717 ---------------------------------------
5718 -- 12.1 Generic Package Declaration --
5719 ---------------------------------------
5721 -- GENERIC_PACKAGE_DECLARATION ::=
5722 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION;
5724 -- Note: when we do generics right, the Activation_Chain_Entity entry
5725 -- for this node can be removed (since the expander won't see generic
5726 -- units any more)???.
5728 -- Note: Generic_Formal_Declarations can include pragmas
5730 -- N_Generic_Package_Declaration
5731 -- Sloc points to GENERIC
5732 -- Specification (Node1) package specification
5733 -- Corresponding_Body (Node5-Sem)
5734 -- Generic_Formal_Declarations (List2) from generic formal part
5735 -- Parent_Spec (Node4-Sem)
5736 -- Activation_Chain_Entity (Node3-Sem)
5738 -------------------------------
5739 -- 12.1 Generic Formal Part --
5740 -------------------------------
5742 -- GENERIC_FORMAL_PART ::=
5743 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
5745 ------------------------------------------------
5746 -- 12.1 Generic Formal Parameter Declaration --
5747 ------------------------------------------------
5749 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
5750 -- FORMAL_OBJECT_DECLARATION
5751 -- | FORMAL_TYPE_DECLARATION
5752 -- | FORMAL_SUBPROGRAM_DECLARATION
5753 -- | FORMAL_PACKAGE_DECLARATION
5755 ---------------------------------
5756 -- 12.3 Generic Instantiation --
5757 ---------------------------------
5759 -- GENERIC_INSTANTIATION ::=
5760 -- package DEFINING_PROGRAM_UNIT_NAME is
5761 -- new generic_package_NAME [GENERIC_ACTUAL_PART];
5762 -- | [[not] overriding]
5763 -- procedure DEFINING_PROGRAM_UNIT_NAME is
5764 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART];
5765 -- | [[not] overriding]
5766 -- function DEFINING_DESIGNATOR is
5767 -- new generic_function_NAME [GENERIC_ACTUAL_PART];
5769 -- N_Package_Instantiation
5770 -- Sloc points to PACKAGE
5771 -- Defining_Unit_Name (Node1)
5773 -- Generic_Associations (List3) (set to No_List if no
5774 -- generic actual part)
5775 -- Parent_Spec (Node4-Sem)
5776 -- Instance_Spec (Node5-Sem)
5777 -- ABE_Is_Certain (Flag18-Sem)
5779 -- N_Procedure_Instantiation
5780 -- Sloc points to PROCEDURE
5781 -- Defining_Unit_Name (Node1)
5783 -- Parent_Spec (Node4-Sem)
5784 -- Generic_Associations (List3) (set to No_List if no
5785 -- generic actual part)
5786 -- Instance_Spec (Node5-Sem)
5787 -- Must_Override (Flag14) set if overriding indicator present
5788 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5789 -- ABE_Is_Certain (Flag18-Sem)
5791 -- N_Function_Instantiation
5792 -- Sloc points to FUNCTION
5793 -- Defining_Unit_Name (Node1)
5795 -- Generic_Associations (List3) (set to No_List if no
5796 -- generic actual part)
5797 -- Parent_Spec (Node4-Sem)
5798 -- Instance_Spec (Node5-Sem)
5799 -- Must_Override (Flag14) set if overriding indicator present
5800 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5801 -- ABE_Is_Certain (Flag18-Sem)
5803 -- Note: overriding indicator is an Ada 2005 feature
5805 -------------------------------
5806 -- 12.3 Generic Actual Part --
5807 -------------------------------
5809 -- GENERIC_ACTUAL_PART ::=
5810 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
5812 -------------------------------
5813 -- 12.3 Generic Association --
5814 -------------------------------
5816 -- GENERIC_ASSOCIATION ::=
5817 -- [generic_formal_parameter_SELECTOR_NAME =>]
5819 -- Note: unlike the procedure call case, a generic association node
5820 -- is generated for every association, even if no formal parameter
5821 -- selector name is present. In this case the parser will leave the
5822 -- Selector_Name field set to Empty, to be filled in later by the
5825 -- In Ada 2005, a formal may be associated with a box, if the
5826 -- association is part of the list of actuals for a formal package.
5827 -- If the association is given by OTHERS => <>, the association is
5828 -- an N_Others_Choice.
5830 -- N_Generic_Association
5831 -- Sloc points to first token of generic association
5832 -- Selector_Name (Node2) (set to Empty if no formal
5833 -- parameter selector name)
5834 -- Explicit_Generic_Actual_Parameter (Node1) (Empty if box present)
5835 -- Box_Present (Flag15) (for formal_package associations with a box)
5837 ---------------------------------------------
5838 -- 12.3 Explicit Generic Actual Parameter --
5839 ---------------------------------------------
5841 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
5842 -- EXPRESSION | variable_NAME | subprogram_NAME
5843 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
5845 -------------------------------------
5846 -- 12.4 Formal Object Declaration --
5847 -------------------------------------
5849 -- FORMAL_OBJECT_DECLARATION ::=
5850 -- DEFINING_IDENTIFIER_LIST :
5851 -- MODE [NULL_EXCLUSION] SUBTYPE_MARK [:= DEFAULT_EXPRESSION];
5852 -- | DEFINING_IDENTIFIER_LIST :
5853 -- MODE ACCESS_DEFINITION [:= DEFAULT_EXPRESSION];
5855 -- Although the syntax allows multiple identifiers in the list, the
5856 -- semantics is as though successive declarations were given with
5857 -- identical type definition and expression components. To simplify
5858 -- semantic processing, the parser represents a multiple declaration
5859 -- case as a sequence of single declarations, using the More_Ids and
5860 -- Prev_Ids flags to preserve the original source form as described
5861 -- in the section on "Handling of Defining Identifier Lists".
5863 -- N_Formal_Object_Declaration
5864 -- Sloc points to first identifier
5865 -- Defining_Identifier (Node1)
5866 -- In_Present (Flag15)
5867 -- Out_Present (Flag17)
5868 -- Null_Exclusion_Present (Flag11) (set to False if not present)
5869 -- Subtype_Mark (Node4) (set to Empty if not present)
5870 -- Access_Definition (Node3) (set to Empty if not present)
5871 -- Default_Expression (Node5) (set to Empty if no default expression)
5872 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5873 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5875 -----------------------------------
5876 -- 12.5 Formal Type Declaration --
5877 -----------------------------------
5879 -- FORMAL_TYPE_DECLARATION ::=
5880 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
5881 -- is FORMAL_TYPE_DEFINITION;
5883 -- N_Formal_Type_Declaration
5884 -- Sloc points to TYPE
5885 -- Defining_Identifier (Node1)
5886 -- Formal_Type_Definition (Node3)
5887 -- Discriminant_Specifications (List4) (set to No_List if no
5888 -- discriminant part)
5889 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5891 ----------------------------------
5892 -- 12.5 Formal type definition --
5893 ----------------------------------
5895 -- FORMAL_TYPE_DEFINITION ::=
5896 -- FORMAL_PRIVATE_TYPE_DEFINITION
5897 -- | FORMAL_DERIVED_TYPE_DEFINITION
5898 -- | FORMAL_DISCRETE_TYPE_DEFINITION
5899 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
5900 -- | FORMAL_MODULAR_TYPE_DEFINITION
5901 -- | FORMAL_FLOATING_POINT_DEFINITION
5902 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
5903 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
5904 -- | FORMAL_ARRAY_TYPE_DEFINITION
5905 -- | FORMAL_ACCESS_TYPE_DEFINITION
5906 -- | FORMAL_INTERFACE_TYPE_DEFINITION
5908 ---------------------------------------------
5909 -- 12.5.1 Formal Private Type Definition --
5910 ---------------------------------------------
5912 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
5913 -- [[abstract] tagged] [limited] private
5915 -- Note: TAGGED is not allowed in Ada 83 mode
5917 -- N_Formal_Private_Type_Definition
5918 -- Sloc points to PRIVATE
5919 -- Abstract_Present (Flag4)
5920 -- Tagged_Present (Flag15)
5921 -- Limited_Present (Flag17)
5923 --------------------------------------------
5924 -- 12.5.1 Formal Derived Type Definition --
5925 --------------------------------------------
5927 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
5928 -- [abstract] [limited | synchronized]
5929 -- new SUBTYPE_MARK [[and INTERFACE_LIST] with private]
5930 -- Note: this construct is not allowed in Ada 83 mode
5932 -- N_Formal_Derived_Type_Definition
5933 -- Sloc points to NEW
5934 -- Subtype_Mark (Node4)
5935 -- Private_Present (Flag15)
5936 -- Abstract_Present (Flag4)
5937 -- Limited_Present (Flag17)
5938 -- Synchronized_Present (Flag7)
5939 -- Interface_List (List2) (set to No_List if none)
5941 ---------------------------------------------
5942 -- 12.5.2 Formal Discrete Type Definition --
5943 ---------------------------------------------
5945 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
5947 -- N_Formal_Discrete_Type_Definition
5950 ---------------------------------------------------
5951 -- 12.5.2 Formal Signed Integer Type Definition --
5952 ---------------------------------------------------
5954 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
5956 -- N_Formal_Signed_Integer_Type_Definition
5957 -- Sloc points to RANGE
5959 --------------------------------------------
5960 -- 12.5.2 Formal Modular Type Definition --
5961 --------------------------------------------
5963 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
5965 -- N_Formal_Modular_Type_Definition
5966 -- Sloc points to MOD
5968 ----------------------------------------------
5969 -- 12.5.2 Formal Floating Point Definition --
5970 ----------------------------------------------
5972 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
5974 -- N_Formal_Floating_Point_Definition
5975 -- Sloc points to DIGITS
5977 ----------------------------------------------------
5978 -- 12.5.2 Formal Ordinary Fixed Point Definition --
5979 ----------------------------------------------------
5981 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
5983 -- N_Formal_Ordinary_Fixed_Point_Definition
5984 -- Sloc points to DELTA
5986 ---------------------------------------------------
5987 -- 12.5.2 Formal Decimal Fixed Point Definition --
5988 ---------------------------------------------------
5990 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
5992 -- Note: formal decimal fixed point definition not allowed in Ada 83
5994 -- N_Formal_Decimal_Fixed_Point_Definition
5995 -- Sloc points to DELTA
5997 ------------------------------------------
5998 -- 12.5.3 Formal Array Type Definition --
5999 ------------------------------------------
6001 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
6003 -------------------------------------------
6004 -- 12.5.4 Formal Access Type Definition --
6005 -------------------------------------------
6007 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
6009 ----------------------------------------------
6010 -- 12.5.5 Formal Interface Type Definition --
6011 ----------------------------------------------
6013 -- FORMAL_INTERFACE_TYPE_DEFINITION ::= INTERFACE_TYPE_DEFINITION
6015 -----------------------------------------
6016 -- 12.6 Formal Subprogram Declaration --
6017 -----------------------------------------
6019 -- FORMAL_SUBPROGRAM_DECLARATION ::=
6020 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION
6021 -- | FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION
6023 --------------------------------------------------
6024 -- 12.6 Formal Concrete Subprogram Declaration --
6025 --------------------------------------------------
6027 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION ::=
6028 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT];
6030 -- N_Formal_Concrete_Subprogram_Declaration
6031 -- Sloc points to WITH
6032 -- Specification (Node1)
6033 -- Default_Name (Node2) (set to Empty if no subprogram default)
6034 -- Box_Present (Flag15)
6036 -- Note: if no subprogram default is present, then Name is set
6037 -- to Empty, and Box_Present is False.
6039 --------------------------------------------------
6040 -- 12.6 Formal Abstract Subprogram Declaration --
6041 --------------------------------------------------
6043 -- FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION ::=
6044 -- with SUBPROGRAM_SPECIFICATION is abstract [SUBPROGRAM_DEFAULT];
6046 -- N_Formal_Abstract_Subprogram_Declaration
6047 -- Sloc points to WITH
6048 -- Specification (Node1)
6049 -- Default_Name (Node2) (set to Empty if no subprogram default)
6050 -- Box_Present (Flag15)
6052 -- Note: if no subprogram default is present, then Name is set
6053 -- to Empty, and Box_Present is False.
6055 ------------------------------
6056 -- 12.6 Subprogram Default --
6057 ------------------------------
6059 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
6061 -- There is no separate node in the tree for a subprogram default.
6062 -- Instead the parent (N_Formal_Concrete_Subprogram_Declaration
6063 -- or N_Formal_Abstract_Subprogram_Declaration) node contains the
6064 -- default name or box indication, as needed.
6066 ------------------------
6067 -- 12.6 Default Name --
6068 ------------------------
6070 -- DEFAULT_NAME ::= NAME
6072 --------------------------------------
6073 -- 12.7 Formal Package Declaration --
6074 --------------------------------------
6076 -- FORMAL_PACKAGE_DECLARATION ::=
6077 -- with package DEFINING_IDENTIFIER
6078 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART;
6080 -- Note: formal package declarations not allowed in Ada 83 mode
6082 -- N_Formal_Package_Declaration
6083 -- Sloc points to WITH
6084 -- Defining_Identifier (Node1)
6086 -- Generic_Associations (List3) (set to No_List if (<>) case or
6087 -- empty generic actual part)
6088 -- Box_Present (Flag15)
6089 -- Instance_Spec (Node5-Sem)
6090 -- ABE_Is_Certain (Flag18-Sem)
6092 --------------------------------------
6093 -- 12.7 Formal Package Actual Part --
6094 --------------------------------------
6096 -- FORMAL_PACKAGE_ACTUAL_PART ::=
6098 -- | [GENERIC_ACTUAL_PART]
6099 -- (FORMAL_PACKAGE_ASSOCIATION {. FORMAL_PACKAGE_ASSOCIATION}
6101 -- FORMAL_PACKAGE_ASSOCIATION ::=
6102 -- GENERIC_ASSOCIATION
6103 -- | GENERIC_FORMAL_PARAMETER_SELECTOR_NAME => <>
6105 -- There is no explicit node in the tree for a formal package actual
6106 -- part. Instead the information appears in the parent node (i.e. the
6107 -- formal package declaration node itself).
6109 -- There is no explicit node for a formal package association. All of
6110 -- them are represented either by a generic association, possibly with
6111 -- Box_Present, or by an N_Others_Choice.
6113 ---------------------------------
6114 -- 13.1 Representation clause --
6115 ---------------------------------
6117 -- REPRESENTATION_CLAUSE ::=
6118 -- ATTRIBUTE_DEFINITION_CLAUSE
6119 -- | ENUMERATION_REPRESENTATION_CLAUSE
6120 -- | RECORD_REPRESENTATION_CLAUSE
6123 ----------------------
6124 -- 13.1 Local Name --
6125 ----------------------
6129 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
6130 -- | library_unit_NAME
6132 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
6133 -- as an attribute reference, which has essentially the same form.
6135 ---------------------------------------
6136 -- 13.3 Attribute definition clause --
6137 ---------------------------------------
6139 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
6140 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
6141 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
6143 -- In Ada 83, the expression must be a simple expression and the
6144 -- local name must be a direct name.
6146 -- Note: the only attribute definition clause that is processed by
6147 -- gigi is an address clause. For all other cases, the information
6148 -- is extracted by the front end and either results in setting entity
6149 -- information, e.g. Esize for the Size clause, or in appropriate
6150 -- expansion actions (e.g. in the case of Storage_Size).
6152 -- For an address clause, Gigi constructs the appropriate addressing
6153 -- code. It also ensures that no aliasing optimizations are made
6154 -- for the object for which the address clause appears.
6156 -- Note: for an address clause used to achieve an overlay:
6160 -- for B'Address use A'Address;
6162 -- the above rule means that Gigi will ensure that no optimizations
6163 -- will be made for B that would violate the implementation advice
6164 -- of RM 13.3(19). However, this advice applies only to B and not
6165 -- to A, which seems unfortunate. The GNAT front end will mark the
6166 -- object A as volatile to also prevent unwanted optimization
6167 -- assumptions based on no aliasing being made for B.
6169 -- N_Attribute_Definition_Clause
6170 -- Sloc points to FOR
6171 -- Name (Node2) the local name
6172 -- Chars (Name1) the identifier name from the attribute designator
6173 -- Expression (Node3) the expression or name
6174 -- Entity (Node4-Sem)
6175 -- Next_Rep_Item (Node5-Sem)
6176 -- From_At_Mod (Flag4-Sem)
6177 -- Check_Address_Alignment (Flag11-Sem)
6178 -- Address_Warning_Posted (Flag18-Sem)
6180 ---------------------------------------------
6181 -- 13.4 Enumeration representation clause --
6182 ---------------------------------------------
6184 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
6185 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
6187 -- In Ada 83, the name must be a direct name
6189 -- N_Enumeration_Representation_Clause
6190 -- Sloc points to FOR
6191 -- Identifier (Node1) direct name
6192 -- Array_Aggregate (Node3)
6193 -- Next_Rep_Item (Node5-Sem)
6195 ---------------------------------
6196 -- 13.4 Enumeration aggregate --
6197 ---------------------------------
6199 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
6201 ------------------------------------------
6202 -- 13.5.1 Record representation clause --
6203 ------------------------------------------
6205 -- RECORD_REPRESENTATION_CLAUSE ::=
6206 -- for first_subtype_LOCAL_NAME use
6207 -- record [MOD_CLAUSE]
6208 -- {COMPONENT_CLAUSE}
6211 -- Gigi restriction: Mod_Clause is always Empty (if present it is
6212 -- replaced by a corresponding Alignment attribute definition clause).
6214 -- Note: Component_Clauses can include pragmas
6216 -- N_Record_Representation_Clause
6217 -- Sloc points to FOR
6218 -- Identifier (Node1) direct name
6219 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
6220 -- Component_Clauses (List3)
6221 -- Next_Rep_Item (Node5-Sem)
6223 ------------------------------
6224 -- 13.5.1 Component clause --
6225 ------------------------------
6227 -- COMPONENT_CLAUSE ::=
6228 -- component_LOCAL_NAME at POSITION
6229 -- range FIRST_BIT .. LAST_BIT;
6231 -- N_Component_Clause
6232 -- Sloc points to AT
6233 -- Component_Name (Node1) points to Name or Attribute_Reference
6235 -- First_Bit (Node3)
6238 ----------------------
6239 -- 13.5.1 Position --
6240 ----------------------
6242 -- POSITION ::= static_EXPRESSION
6244 -----------------------
6245 -- 13.5.1 First_Bit --
6246 -----------------------
6248 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
6250 ----------------------
6251 -- 13.5.1 Last_Bit --
6252 ----------------------
6254 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
6256 --------------------------
6257 -- 13.8 Code statement --
6258 --------------------------
6260 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
6262 -- Note: in GNAT, the qualified expression has the form
6264 -- Asm_Insn'(Asm (...));
6266 -- See package System.Machine_Code in file s-maccod.ads for details on
6267 -- the allowed parameters to Asm. There are two ways this node can
6268 -- arise, as a code statement, in which case the expression is the
6269 -- qualified expression, or as a result of the expansion of an intrinsic
6270 -- call to the Asm or Asm_Input procedure.
6273 -- Sloc points to first token of the expression
6274 -- Expression (Node3)
6276 -- Note: package Exp_Code contains an abstract functional interface
6277 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
6279 ------------------------
6280 -- 13.12 Restriction --
6281 ------------------------
6284 -- restriction_IDENTIFIER
6285 -- | restriction_parameter_IDENTIFIER => EXPRESSION
6287 -- There is no explicit node for restrictions. Instead the restriction
6288 -- appears in normal pragma syntax as a pragma argument association,
6289 -- which has the same syntactic form.
6291 --------------------------
6292 -- B.2 Shift Operators --
6293 --------------------------
6295 -- Calls to the intrinsic shift functions are converted to one of
6296 -- the following shift nodes, which have the form of normal binary
6297 -- operator names. Note that for a given shift operation, one node
6298 -- covers all possible types, as for normal operators.
6300 -- Note: it is perfectly permissible for the expander to generate
6301 -- shift operation nodes directly, in which case they will be analyzed
6302 -- and parsed in the usual manner.
6304 -- Sprint syntax: shift-function-name!(expr, count)
6306 -- Note: the Left_Opnd field holds the first argument (the value to
6307 -- be shifted). The Right_Opnd field holds the second argument (the
6308 -- shift count). The Chars field is the name of the intrinsic function.
6311 -- Sloc points to the function name
6312 -- plus fields for binary operator
6313 -- plus fields for expression
6314 -- Shift_Count_OK (Flag4-Sem)
6316 -- N_Op_Rotate_Right
6317 -- Sloc points to the function name
6318 -- plus fields for binary operator
6319 -- plus fields for expression
6320 -- Shift_Count_OK (Flag4-Sem)
6323 -- Sloc points to the function name
6324 -- plus fields for binary operator
6325 -- plus fields for expression
6326 -- Shift_Count_OK (Flag4-Sem)
6328 -- N_Op_Shift_Right_Arithmetic
6329 -- Sloc points to the function name
6330 -- plus fields for binary operator
6331 -- plus fields for expression
6332 -- Shift_Count_OK (Flag4-Sem)
6335 -- Sloc points to the function name
6336 -- plus fields for binary operator
6337 -- plus fields for expression
6338 -- Shift_Count_OK (Flag4-Sem)
6340 --------------------------
6341 -- Obsolescent Features --
6342 --------------------------
6344 -- The syntax descriptions and tree nodes for obsolescent features are
6345 -- grouped together, corresponding to their location in appendix I in
6346 -- the RM. However, parsing and semantic analysis for these constructs
6347 -- is located in an appropriate chapter (see individual notes).
6349 ---------------------------
6350 -- J.3 Delta Constraint --
6351 ---------------------------
6353 -- Note: the parse routine for this construct is located in section
6354 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
6355 -- where delta constraint logically belongs.
6357 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
6359 -- N_Delta_Constraint
6360 -- Sloc points to DELTA
6361 -- Delta_Expression (Node3)
6362 -- Range_Constraint (Node4) (set to Empty if not present)
6364 --------------------
6366 --------------------
6368 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
6370 -- Note: the parse routine for this construct is located in Par-Ch13,
6371 -- and the semantic analysis is in Sem_Ch13, where at clause logically
6372 -- belongs if it were not obsolescent.
6374 -- Note: in Ada 83 the expression must be a simple expression
6376 -- Gigi restriction: This node never appears, it is rewritten as an
6377 -- address attribute definition clause.
6380 -- Sloc points to FOR
6381 -- Identifier (Node1)
6382 -- Expression (Node3)
6384 ---------------------
6385 -- J.8 Mod clause --
6386 ---------------------
6388 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
6390 -- Note: the parse routine for this construct is located in Par-Ch13,
6391 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
6392 -- belongs if it were not obsolescent.
6394 -- Note: in Ada 83, the expression must be a simple expression
6396 -- Gigi restriction: this node never appears. It is replaced
6397 -- by a corresponding Alignment attribute definition clause.
6399 -- Note: pragmas can appear before and after the MOD_CLAUSE since
6400 -- its name has "clause" in it. This is rather strange, but is quite
6401 -- definitely specified. The pragmas before are collected in the
6402 -- Pragmas_Before field of the mod clause node itself, and pragmas
6403 -- after are simply swallowed up in the list of component clauses.
6406 -- Sloc points to AT
6407 -- Expression (Node3)
6408 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
6410 --------------------
6411 -- Semantic Nodes --
6412 --------------------
6414 -- These semantic nodes are used to hold additional semantic information.
6415 -- They are inserted into the tree as a result of semantic processing.
6416 -- Although there are no legitimate source syntax constructions that
6417 -- correspond directly to these nodes, we need a source syntax for the
6418 -- reconstructed tree printed by Sprint, and the node descriptions here
6419 -- show this syntax.
6421 ----------------------------
6422 -- Conditional Expression --
6423 ----------------------------
6425 -- This node is used to represent an expression corresponding to the
6426 -- C construct (condition ? then-expression : else_expression), where
6427 -- Expressions is a three element list, whose first expression is the
6428 -- condition, and whose second and third expressions are the then and
6429 -- else expressions respectively.
6431 -- Note: the Then_Actions and Else_Actions fields are always set to
6432 -- No_List in the tree passed to Gigi. These fields are used only
6433 -- for temporary processing purposes in the expander.
6435 -- Sprint syntax: (if expr then expr else expr)
6437 -- N_Conditional_Expression
6438 -- Sloc points to related node
6439 -- Expressions (List1)
6440 -- Then_Actions (List2-Sem)
6441 -- Else_Actions (List3-Sem)
6442 -- plus fields for expression
6444 -- Note: in the case where a debug source file is generated, the Sloc
6445 -- for this node points to the IF keyword in the Sprint file output.
6451 -- The N_Expanded_Name node is used to represent a selected component
6452 -- name that has been resolved to an expanded name. The semantic phase
6453 -- replaces N_Selected_Component nodes that represent names by the use
6454 -- of this node, leaving the N_Selected_Component node used only when
6455 -- the prefix is a record or protected type.
6457 -- The fields of the N_Expanded_Name node are layed out identically
6458 -- to those of the N_Selected_Component node, allowing conversion of
6459 -- an expanded name node to a selected component node to be done
6460 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
6462 -- There is no special sprint syntax for an expanded name
6465 -- Sloc points to the period
6466 -- Chars (Name1) copy of Chars field of selector name
6468 -- Selector_Name (Node2)
6469 -- Entity (Node4-Sem)
6470 -- Associated_Node (Node4-Sem)
6471 -- Redundant_Use (Flag13-Sem)
6472 -- Has_Private_View (Flag11-Sem) set in generic units.
6473 -- plus fields for expression
6475 --------------------
6476 -- Free Statement --
6477 --------------------
6479 -- The N_Free_Statement node is generated as a result of a call to an
6480 -- instantiation of Unchecked_Deallocation. The instantiation of this
6481 -- generic is handled specially and generates this node directly.
6483 -- Sprint syntax: free expression
6486 -- Sloc is copied from the unchecked deallocation call
6487 -- Expression (Node3) argument to unchecked deallocation call
6488 -- Storage_Pool (Node1-Sem)
6489 -- Procedure_To_Call (Node2-Sem)
6490 -- Actual_Designated_Subtype (Node4-Sem)
6492 -- Note: in the case where a debug source file is generated, the Sloc
6493 -- for this node points to the FREE keyword in the Sprint file output.
6499 -- This node marks the point in a declarative part at which an entity
6500 -- declared therein becomes frozen. The expander places initialization
6501 -- procedures for types at those points. Gigi uses the freezing point
6502 -- to elaborate entities that may depend on previous private types.
6504 -- See the section in Einfo "Delayed Freezing and Elaboration" for
6505 -- a full description of the use of this node.
6507 -- The Entity field points back to the entity for the type (whose
6508 -- Freeze_Node field points back to this freeze node).
6510 -- The Actions field contains a list of declarations and statements
6511 -- generated by the expander which are associated with the freeze
6512 -- node, and are elaborated as though the freeze node were replaced
6513 -- by this sequence of actions.
6515 -- Note: the Sloc field in the freeze node references a construct
6516 -- associated with the freezing point. This is used for posting
6517 -- messages in some error/warning situations, e.g. the case where
6518 -- a primitive operation of a tagged type is declared too late.
6520 -- Sprint syntax: freeze entity-name [
6525 -- Sloc points near freeze point (see above special note)
6526 -- Entity (Node4-Sem)
6527 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
6528 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
6529 -- Actions (List1) (set to No_List if no freeze actions)
6530 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
6532 -- The Actions field holds actions associated with the freeze. These
6533 -- actions are elaborated at the point where the type is frozen.
6535 -- Note: in the case where a debug source file is generated, the Sloc
6536 -- for this node points to the FREEZE keyword in the Sprint file output.
6538 --------------------------------
6539 -- Implicit Label Declaration --
6540 --------------------------------
6542 -- An implicit label declaration is created for every occurrence of a
6543 -- label on a statement or a label on a block or loop. It is chained
6544 -- in the declarations of the innermost enclosing block as specified
6545 -- in RM section 5.1 (3).
6547 -- The Defining_Identifier is the actual identifier for the
6548 -- statement identifier. Note that the occurrence of the label
6549 -- is a reference, NOT the defining occurrence. The defining
6550 -- occurrence occurs at the head of the innermost enclosing
6551 -- block, and is represented by this node.
6553 -- Note: from the grammar, this might better be called an implicit
6554 -- statement identifier declaration, but the term we choose seems
6555 -- friendlier, since at least informally statement identifiers are
6556 -- called labels in both cases (i.e. when used in labels, and when
6557 -- used as the identifiers of blocks and loops).
6559 -- Note: although this is logically a semantic node, since it does
6560 -- not correspond directly to a source syntax construction, these
6561 -- nodes are actually created by the parser in a post pass done just
6562 -- after parsing is complete, before semantic analysis is started (see
6563 -- the Par.Labl subunit in file par-labl.adb).
6565 -- Sprint syntax: labelname : label;
6567 -- N_Implicit_Label_Declaration
6568 -- Sloc points to the << of the label
6569 -- Defining_Identifier (Node1)
6570 -- Label_Construct (Node2-Sem)
6572 -- Note: in the case where a debug source file is generated, the Sloc
6573 -- for this node points to the label name in the generated declaration.
6575 ---------------------
6576 -- Itype_Reference --
6577 ---------------------
6579 -- This node is used to create a reference to an Itype. The only
6580 -- purpose is to make sure that the Itype is defined if this is the
6583 -- A typical use of this node is when an Itype is to be referenced in
6584 -- two branches of an if statement. In this case it is important that
6585 -- the first use of the Itype not be inside the conditional, since
6586 -- then it might not be defined if the wrong branch of the if is
6587 -- taken in the case where the definition generates elaboration code.
6589 -- The Itype field points to the referenced Itype
6591 -- sprint syntax: reference itype-name
6593 -- N_Itype_Reference
6594 -- Sloc points to the node generating the reference
6595 -- Itype (Node1-Sem)
6597 -- Note: in the case where a debug source file is generated, the Sloc
6598 -- for this node points to the REFERENCE keyword in the file output.
6600 ---------------------
6601 -- Raise_xxx_Error --
6602 ---------------------
6604 -- One of these nodes is created during semantic analysis to replace
6605 -- a node for an expression that is determined to definitely raise
6606 -- the corresponding exception.
6608 -- The N_Raise_xxx_Error node may also stand alone in place
6609 -- of a declaration or statement, in which case it simply causes
6610 -- the exception to be raised (i.e. it is equivalent to a raise
6611 -- statement that raises the corresponding exception). This use
6612 -- is distinguished by the fact that the Etype in this case is
6613 -- Standard_Void_Type, In the subexpression case, the Etype is the
6614 -- same as the type of the subexpression which it replaces.
6616 -- If Condition is empty, then the raise is unconditional. If the
6617 -- Condition field is non-empty, it is a boolean expression which
6618 -- is first evaluated, and the exception is raised only if the
6619 -- value of the expression is True. In the unconditional case, the
6620 -- creation of this node is usually accompanied by a warning message
6621 -- error. The creation of this node will usually be accompanied by a
6622 -- message (unless it appears within the right operand of a short
6623 -- circuit form whose left argument is static and decisively
6624 -- eliminates elaboration of the raise operation. The condition field
6625 -- can ONLY be present when the node is used as a statement form, it
6626 -- may NOT be present in the case where the node appears within an
6629 -- The exception is generated with a message that contains the
6630 -- file name and line number, and then appended text. The Reason
6631 -- code shows the text to be added. The Reason code is an element
6632 -- of the type Types.RT_Exception_Code, and indicates both the
6633 -- message to be added, and the exception to be raised (which must
6634 -- match the node type). The value is stored by storing a Uint which
6635 -- is the Pos value of the enumeration element in this type.
6637 -- Gigi restriction: This expander ensures that the type of the
6638 -- Condition field is always Standard.Boolean, even if the type
6639 -- in the source is some non-standard boolean type.
6641 -- Sprint syntax: [xxx_error "msg"]
6642 -- or: [xxx_error when condition "msg"]
6644 -- N_Raise_Constraint_Error
6645 -- Sloc references related construct
6646 -- Condition (Node1) (set to Empty if no condition)
6648 -- plus fields for expression
6650 -- N_Raise_Program_Error
6651 -- Sloc references related construct
6652 -- Condition (Node1) (set to Empty if no condition)
6654 -- plus fields for expression
6656 -- N_Raise_Storage_Error
6657 -- Sloc references related construct
6658 -- Condition (Node1) (set to Empty if no condition)
6660 -- plus fields for expression
6662 -- Note: Sloc is copied from the expression generating the exception.
6663 -- In the case where a debug source file is generated, the Sloc for
6664 -- this node points to the left bracket in the Sprint file output.
6666 -- Note: the back end may be required to translate these nodes into
6667 -- appropriate goto statements. See description of N_Push/Pop_xxx_Label.
6669 ---------------------------------------------
6670 -- Optimization of Exception Raise to Goto --
6671 ---------------------------------------------
6673 -- In some cases, the front end will determine that any exception raised
6674 -- by the back end for a certain exception should be transformed into a
6677 -- There are three kinds of exceptions raised by the back end (note that
6678 -- for this purpose we consider gigi to be part of the back end in the
6681 -- 1. Exceptions resulting from N_Raise_xxx_Error nodes
6682 -- 2. Exceptions from checks triggered by Do_xxx_Check flags
6683 -- 3. Other cases not specifically marked by the front end
6685 -- Normally all such exceptions are translated into calls to the proper
6686 -- Rcheck_xx procedure, where xx encodes both the exception to be raised
6687 -- and the exception message.
6689 -- The front end may determine that for a particular sequence of code,
6690 -- exceptions in any of these three categories for a particular builtin
6691 -- exception should result in a goto, rather than a call to Rcheck_xx.
6692 -- The exact sequence to be generated is:
6694 -- Local_Raise (exception'Identity);
6697 -- The front end marks such a sequence of code by bracketing it with
6698 -- push and pop nodes:
6700 -- N_Push_xxx_Label (referencing the label)
6702 -- (code where transformation is expected for exception xxx)
6706 -- The use of push/pop reflects the fact that such regions can properly
6707 -- nest, and one special case is a subregion in which no transformation
6708 -- is allowed. Such a region is marked by a N_Push_xxx_Label node whose
6709 -- Exception_Label field is Empty.
6711 -- N_Push_Constraint_Error_Label
6712 -- Sloc references first statement in region covered
6713 -- Exception_Label (Node5-Sem)
6715 -- N_Push_Program_Error_Label
6716 -- Sloc references first statement in region covered
6717 -- Exception_Label (Node5-Sem)
6719 -- N_Push_Storage_Error_Label
6720 -- Sloc references first statement in region covered
6721 -- Exception_Label (Node5-Sem)
6723 -- N_Pop_Constraint_Error_Label
6724 -- Sloc references last statement in region covered
6726 -- N_Pop_Program_Error_Label
6727 -- Sloc references last statement in region covered
6729 -- N_Pop_Storage_Error_Label
6730 -- Sloc references last statement in region covered
6736 -- For a number of purposes, we need to construct references to objects.
6737 -- These references are subsequently treated as normal access values.
6738 -- An example is the construction of the parameter block passed to a
6739 -- task entry. The N_Reference node is provided for this purpose. It is
6740 -- similar in effect to the use of the Unrestricted_Access attribute,
6741 -- and like Unrestricted_Access can be applied to objects which would
6742 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
6743 -- objects which are not aliased, and slices). In addition it can be
6744 -- applied to composite type values as well as objects, including string
6745 -- values and aggregates.
6747 -- Note: we use the Prefix field for this expression so that the
6748 -- resulting node can be treated using common code with the attribute
6749 -- nodes for the 'Access and related attributes. Logically it would make
6750 -- more sense to call it an Expression field, but then we would have to
6751 -- special case the treatment of the N_Reference node.
6753 -- Sprint syntax: prefix'reference
6756 -- Sloc is copied from the expression
6758 -- plus fields for expression
6760 -- Note: in the case where a debug source file is generated, the Sloc
6761 -- for this node points to the quote in the Sprint file output.
6763 ---------------------
6764 -- Subprogram_Info --
6765 ---------------------
6767 -- This node generates the appropriate Subprogram_Info value for a
6768 -- given procedure. See Ada.Exceptions for further details
6770 -- Sprint syntax: subprog'subprogram_info
6772 -- N_Subprogram_Info
6773 -- Sloc points to the entity for the procedure
6774 -- Identifier (Node1) identifier referencing the procedure
6775 -- Etype (Node5-Sem) type (always set to Ada.Exceptions.Code_Loc
6777 -- Note: in the case where a debug source file is generated, the Sloc
6778 -- for this node points to the quote in the Sprint file output.
6780 --------------------------
6781 -- Unchecked Expression --
6782 --------------------------
6784 -- An unchecked expression is one that must be analyzed and resolved
6785 -- with all checks off, regardless of the current setting of scope
6788 -- Sprint syntax: `(expression)
6790 -- Note: this node is always removed from the tree (and replaced by
6791 -- its constituent expression) on completion of analysis, so it only
6792 -- appears in intermediate trees, and will never be seen by Gigi.
6794 -- N_Unchecked_Expression
6795 -- Sloc is a copy of the Sloc of the expression
6796 -- Expression (Node3)
6797 -- plus fields for expression
6799 -- Note: in the case where a debug source file is generated, the Sloc
6800 -- for this node points to the back quote in the Sprint file output.
6802 -------------------------------
6803 -- Unchecked Type Conversion --
6804 -------------------------------
6806 -- An unchecked type conversion node represents the semantic action
6807 -- corresponding to a call to an instantiation of Unchecked_Conversion.
6808 -- It is generated as a result of actual use of Unchecked_Conversion
6809 -- and also the expander generates unchecked type conversion nodes
6810 -- directly for expansion of complex semantic actions.
6812 -- Note: an unchecked type conversion is a variable as far as the
6813 -- semantics are concerned, which is convenient for the expander.
6814 -- This does not change what Ada source programs are legal, since
6815 -- clearly a function call to an instantiation of Unchecked_Conversion
6816 -- is not a variable in any case.
6818 -- Sprint syntax: subtype-mark!(expression)
6820 -- N_Unchecked_Type_Conversion
6821 -- Sloc points to related node in source
6822 -- Subtype_Mark (Node4)
6823 -- Expression (Node3)
6824 -- Kill_Range_Check (Flag11-Sem)
6825 -- No_Truncation (Flag17-Sem)
6826 -- plus fields for expression
6828 -- Note: in the case where a debug source file is generated, the Sloc
6829 -- for this node points to the exclamation in the Sprint file output.
6831 -----------------------------------
6832 -- Validate_Unchecked_Conversion --
6833 -----------------------------------
6835 -- The front end does most of the validation of unchecked conversion,
6836 -- including checking sizes (this is done after the back end is called
6837 -- to take advantage of back-annotation of calculated sizes).
6839 -- The front end also deals with specific cases that are not allowed
6840 -- e.g. involving unconstrained array types.
6842 -- For the case of the standard gigi backend, this means that all
6843 -- checks are done in the front-end.
6845 -- However, in the case of specialized back-ends, notably the JVM
6846 -- backend for JGNAT, additional requirements and restrictions apply
6847 -- to unchecked conversion, and these are most conveniently performed
6848 -- in the specialized back-end.
6850 -- To accommodate this requirement, for such back ends, the following
6851 -- special node is generated recording an unchecked conversion that
6852 -- needs to be validated. The back end should post an appropriate
6853 -- error message if the unchecked conversion is invalid or warrants
6854 -- a special warning message.
6856 -- Source_Type and Target_Type point to the entities for the two
6857 -- types involved in the unchecked conversion instantiation that
6858 -- is to be validated.
6860 -- Sprint syntax: validate Unchecked_Conversion (source, target);
6862 -- N_Validate_Unchecked_Conversion
6863 -- Sloc points to instantiation (location for warning message)
6864 -- Source_Type (Node1-Sem)
6865 -- Target_Type (Node2-Sem)
6867 -- Note: in the case where a debug source file is generated, the Sloc
6868 -- for this node points to the VALIDATE keyword in the file output.
6874 -- Used as the contents of the Nkind field of the dummy Empty node
6875 -- and in some other situations to indicate an uninitialized value.
6878 -- Chars (Name1) is set to No_Name
6884 -- Used as the contents of the Nkind field of the dummy Error node.
6885 -- Has an Etype field, which gets set to Any_Type later on, to help
6886 -- error recovery (Error_Posted is also set in the Error node).
6889 -- Chars (Name1) is set to Error_Name
6890 -- Etype (Node5-Sem)
6892 --------------------------
6893 -- Node Type Definition --
6894 --------------------------
6896 -- The following is the definition of the Node_Kind type. As previously
6897 -- discussed, this is separated off to allow rearrangement of the order
6898 -- to facilitate definition of subtype ranges. The comments show the
6899 -- subtype classes which apply to each set of node kinds. The first
6900 -- entry in the comment characterizes the following list of nodes.
6905 -- N_Representation_Clause
6909 N_Enumeration_Representation_Clause,
6911 N_Record_Representation_Clause,
6913 -- N_Representation_Clause, N_Has_Chars
6915 N_Attribute_Definition_Clause,
6920 N_Pragma_Argument_Association,
6926 -- N_Entity, N_Has_Etype, N_Has_Chars
6928 N_Defining_Character_Literal,
6929 N_Defining_Identifier,
6930 N_Defining_Operator_Symbol,
6932 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
6936 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6937 -- N_Has_Chars, N_Has_Entity
6942 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6943 -- N_Has_Chars, N_Has_Entity
6945 N_Character_Literal,
6947 -- N_Binary_Op, N_Op, N_Subexpr,
6948 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6955 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
6956 -- N_Has_Etype, N_Has_Chars, N_Has_Entity, N_Multiplying_Operator
6963 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6964 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6968 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6969 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean, N_Op_Compare
6978 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6979 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6984 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
6985 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
6991 N_Op_Shift_Right_Arithmetic,
6993 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
6994 -- N_Has_Chars, N_Has_Entity
7001 -- N_Subexpr, N_Has_Etype, N_Has_Entity
7003 N_Attribute_Reference,
7005 -- N_Subexpr, N_Has_Etype, N_Membership_Test
7010 -- N_Subexpr, N_Has_Etype
7013 N_Conditional_Expression,
7014 N_Explicit_Dereference,
7016 N_Indexed_Component,
7020 N_Procedure_Call_Statement,
7021 N_Qualified_Expression,
7023 -- N_Raise_xxx_Error, N_Subexpr, N_Has_Etype
7025 N_Raise_Constraint_Error,
7026 N_Raise_Program_Error,
7027 N_Raise_Storage_Error,
7029 -- N_Subexpr, N_Has_Etype
7033 N_Extension_Aggregate,
7037 N_Selected_Component,
7042 N_Unchecked_Expression,
7043 N_Unchecked_Type_Conversion,
7047 N_Subtype_Indication,
7051 N_Component_Declaration,
7052 N_Entry_Declaration,
7053 N_Formal_Object_Declaration,
7054 N_Formal_Type_Declaration,
7055 N_Full_Type_Declaration,
7056 N_Incomplete_Type_Declaration,
7057 N_Loop_Parameter_Specification,
7058 N_Object_Declaration,
7059 N_Protected_Type_Declaration,
7060 N_Private_Extension_Declaration,
7061 N_Private_Type_Declaration,
7062 N_Subtype_Declaration,
7064 -- N_Subprogram_Specification, N_Declaration
7066 N_Function_Specification,
7067 N_Procedure_Specification,
7069 -- N_Access_To_Subprogram_Definition
7071 N_Access_Function_Definition,
7072 N_Access_Procedure_Definition,
7074 -- N_Later_Decl_Item
7076 N_Task_Type_Declaration,
7078 -- N_Body_Stub, N_Later_Decl_Item
7080 N_Package_Body_Stub,
7081 N_Protected_Body_Stub,
7082 N_Subprogram_Body_Stub,
7085 -- N_Generic_Instantiation, N_Later_Decl_Item
7086 -- N_Subprogram_Instantiation
7088 N_Function_Instantiation,
7089 N_Procedure_Instantiation,
7091 -- N_Generic_Instantiation, N_Later_Decl_Item
7093 N_Package_Instantiation,
7095 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
7100 -- N_Later_Decl_Item, N_Proper_Body
7105 -- N_Later_Decl_Item
7107 N_Implicit_Label_Declaration,
7108 N_Package_Declaration,
7109 N_Single_Task_Declaration,
7110 N_Subprogram_Declaration,
7111 N_Use_Package_Clause,
7113 -- N_Generic_Declaration, N_Later_Decl_Item
7115 N_Generic_Package_Declaration,
7116 N_Generic_Subprogram_Declaration,
7118 -- N_Array_Type_Definition
7120 N_Constrained_Array_Definition,
7121 N_Unconstrained_Array_Definition,
7123 -- N_Renaming_Declaration
7125 N_Exception_Renaming_Declaration,
7126 N_Object_Renaming_Declaration,
7127 N_Package_Renaming_Declaration,
7128 N_Subprogram_Renaming_Declaration,
7130 -- N_Generic_Renaming_Declaration, N_Renaming_Declaration
7132 N_Generic_Function_Renaming_Declaration,
7133 N_Generic_Package_Renaming_Declaration,
7134 N_Generic_Procedure_Renaming_Declaration,
7136 -- N_Statement_Other_Than_Procedure_Call
7140 N_Assignment_Statement,
7141 N_Asynchronous_Select,
7145 N_Conditional_Entry_Call,
7147 -- N_Statement_Other_Than_Procedure_Call. N_Delay_Statement
7149 N_Delay_Relative_Statement,
7150 N_Delay_Until_Statement,
7152 -- N_Statement_Other_Than_Procedure_Call
7154 N_Entry_Call_Statement,
7160 N_Requeue_Statement,
7161 N_Return_Statement, -- renamed as N_Simple_Return_Statement below
7162 N_Extended_Return_Statement,
7166 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
7173 N_Accept_Alternative,
7174 N_Delay_Alternative,
7176 N_Entry_Body_Formal_Part,
7178 N_Terminate_Alternative,
7180 -- N_Formal_Subprogram_Declaration
7182 N_Formal_Abstract_Subprogram_Declaration,
7183 N_Formal_Concrete_Subprogram_Declaration,
7185 -- N_Push_xxx_Label, N_Push_Pop_xxx_Label
7187 N_Push_Constraint_Error_Label,
7188 N_Push_Program_Error_Label,
7189 N_Push_Storage_Error_Label,
7191 -- N_Pop_xxx_Label, N_Push_Pop_xxx_Label
7193 N_Pop_Constraint_Error_Label,
7194 N_Pop_Program_Error_Label,
7195 N_Pop_Storage_Error_Label,
7197 -- Other nodes (not part of any subtype class)
7200 N_Abstract_Subprogram_Declaration,
7201 N_Access_Definition,
7202 N_Access_To_Object_Definition,
7203 N_Case_Statement_Alternative,
7205 N_Compilation_Unit_Aux,
7206 N_Component_Association,
7207 N_Component_Definition,
7209 N_Derived_Type_Definition,
7210 N_Decimal_Fixed_Point_Definition,
7211 N_Defining_Program_Unit_Name,
7214 N_Digits_Constraint,
7215 N_Discriminant_Association,
7216 N_Discriminant_Specification,
7217 N_Enumeration_Type_Definition,
7219 N_Entry_Call_Alternative,
7220 N_Entry_Index_Specification,
7221 N_Exception_Declaration,
7222 N_Exception_Handler,
7223 N_Floating_Point_Definition,
7224 N_Formal_Decimal_Fixed_Point_Definition,
7225 N_Formal_Derived_Type_Definition,
7226 N_Formal_Discrete_Type_Definition,
7227 N_Formal_Floating_Point_Definition,
7228 N_Formal_Modular_Type_Definition,
7229 N_Formal_Ordinary_Fixed_Point_Definition,
7230 N_Formal_Package_Declaration,
7231 N_Formal_Private_Type_Definition,
7232 N_Formal_Signed_Integer_Type_Definition,
7234 N_Generic_Association,
7235 N_Handled_Sequence_Of_Statements,
7236 N_Index_Or_Discriminant_Constraint,
7239 N_Modular_Type_Definition,
7240 N_Number_Declaration,
7241 N_Ordinary_Fixed_Point_Definition,
7243 N_Package_Specification,
7244 N_Parameter_Association,
7245 N_Parameter_Specification,
7247 N_Protected_Definition,
7249 N_Real_Range_Specification,
7250 N_Record_Definition,
7251 N_Signed_Integer_Type_Definition,
7252 N_Single_Protected_Declaration,
7255 N_Triggering_Alternative,
7257 N_Validate_Unchecked_Conversion,
7263 for Node_Kind'Size use 8;
7264 -- The data structures in Atree assume this!
7266 ----------------------------
7267 -- Node Class Definitions --
7268 ----------------------------
7270 subtype N_Access_To_Subprogram_Definition is Node_Kind range
7271 N_Access_Function_Definition ..
7272 N_Access_Procedure_Definition;
7274 subtype N_Array_Type_Definition is Node_Kind range
7275 N_Constrained_Array_Definition ..
7276 N_Unconstrained_Array_Definition;
7278 subtype N_Binary_Op is Node_Kind range
7280 N_Op_Shift_Right_Arithmetic;
7282 subtype N_Body_Stub is Node_Kind range
7283 N_Package_Body_Stub ..
7286 subtype N_Declaration is Node_Kind range
7287 N_Component_Declaration ..
7288 N_Procedure_Specification;
7289 -- Note: this includes all constructs normally thought of as declarations
7290 -- except those which are separately grouped as later declarations.
7292 subtype N_Delay_Statement is Node_Kind range
7293 N_Delay_Relative_Statement ..
7294 N_Delay_Until_Statement;
7296 subtype N_Direct_Name is Node_Kind range
7298 N_Character_Literal;
7300 subtype N_Entity is Node_Kind range
7301 N_Defining_Character_Literal ..
7302 N_Defining_Operator_Symbol;
7304 subtype N_Formal_Subprogram_Declaration is Node_Kind range
7305 N_Formal_Abstract_Subprogram_Declaration ..
7306 N_Formal_Concrete_Subprogram_Declaration;
7308 subtype N_Generic_Declaration is Node_Kind range
7309 N_Generic_Package_Declaration ..
7310 N_Generic_Subprogram_Declaration;
7312 subtype N_Generic_Instantiation is Node_Kind range
7313 N_Function_Instantiation ..
7314 N_Package_Instantiation;
7316 subtype N_Generic_Renaming_Declaration is Node_Kind range
7317 N_Generic_Function_Renaming_Declaration ..
7318 N_Generic_Procedure_Renaming_Declaration;
7320 subtype N_Has_Chars is Node_Kind range
7321 N_Attribute_Definition_Clause ..
7324 subtype N_Has_Entity is Node_Kind range
7326 N_Attribute_Reference;
7327 -- Nodes that have Entity fields
7328 -- Warning: DOES NOT INCLUDE N_Freeze_Entity!
7330 subtype N_Has_Etype is Node_Kind range
7332 N_Subtype_Indication;
7334 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
7338 subtype N_Multiplying_Operator is Node_Kind range
7342 subtype N_Later_Decl_Item is Node_Kind range
7343 N_Task_Type_Declaration ..
7344 N_Generic_Subprogram_Declaration;
7345 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and
7346 -- includes only those items which can appear as later declarative
7347 -- items. This also includes N_Implicit_Label_Declaration which is
7348 -- not specifically in the grammar but may appear as a valid later
7349 -- declarative items. It does NOT include N_Pragma which can also
7350 -- appear among later declarative items. It does however include
7351 -- N_Protected_Body, which is a bit peculiar, but harmless since
7352 -- this cannot appear in Ada 83 mode anyway.
7354 subtype N_Membership_Test is Node_Kind range
7358 subtype N_Op is Node_Kind range
7362 subtype N_Op_Boolean is Node_Kind range
7365 -- Binary operators which take operands of a boolean type, and yield
7366 -- a result of a boolean type.
7368 subtype N_Op_Compare is Node_Kind range
7372 subtype N_Op_Shift is Node_Kind range
7374 N_Op_Shift_Right_Arithmetic;
7376 subtype N_Proper_Body is Node_Kind range
7380 subtype N_Push_xxx_Label is Node_Kind range
7381 N_Push_Constraint_Error_Label ..
7382 N_Push_Storage_Error_Label;
7384 subtype N_Pop_xxx_Label is Node_Kind range
7385 N_Pop_Constraint_Error_Label ..
7386 N_Pop_Storage_Error_Label;
7388 subtype N_Push_Pop_xxx_Label is Node_Kind range
7389 N_Push_Constraint_Error_Label ..
7390 N_Pop_Storage_Error_Label;
7392 subtype N_Raise_xxx_Error is Node_Kind range
7393 N_Raise_Constraint_Error ..
7394 N_Raise_Storage_Error;
7396 subtype N_Renaming_Declaration is Node_Kind range
7397 N_Exception_Renaming_Declaration ..
7398 N_Generic_Procedure_Renaming_Declaration;
7400 subtype N_Representation_Clause is Node_Kind range
7402 N_Attribute_Definition_Clause;
7404 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
7405 N_Abort_Statement ..
7407 -- Note that this includes all statement types except for the cases of the
7408 -- N_Procedure_Call_Statement which is considered to be a subexpression
7409 -- (since overloading is possible, so it needs to go through the normal
7410 -- overloading resolution for expressions).
7412 subtype N_Subprogram_Instantiation is Node_Kind range
7413 N_Function_Instantiation ..
7414 N_Procedure_Instantiation;
7416 subtype N_Has_Condition is Node_Kind range
7418 N_Terminate_Alternative;
7419 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
7421 subtype N_Subexpr is Node_Kind range
7423 N_Unchecked_Type_Conversion;
7424 -- Nodes with expression fields
7426 subtype N_Subprogram_Specification is Node_Kind range
7427 N_Function_Specification ..
7428 N_Procedure_Specification;
7430 subtype N_Unary_Op is Node_Kind range
7434 subtype N_Unit_Body is Node_Kind range
7438 ---------------------------
7439 -- Node Access Functions --
7440 ---------------------------
7442 -- The following functions return the contents of the indicated field of
7443 -- the node referenced by the argument, which is a Node_Id. They provide
7444 -- logical access to fields in the node which could be accessed using the
7445 -- Atree.Unchecked_Access package, but the idea is always to use these
7446 -- higher level routines which preserve strong typing. In debug mode,
7447 -- these routines check that they are being applied to an appropriate
7448 -- node, as well as checking that the node is in range.
7450 function ABE_Is_Certain
7451 (N : Node_Id) return Boolean; -- Flag18
7453 function Abort_Present
7454 (N : Node_Id) return Boolean; -- Flag15
7456 function Abortable_Part
7457 (N : Node_Id) return Node_Id; -- Node2
7459 function Abstract_Present
7460 (N : Node_Id) return Boolean; -- Flag4
7462 function Accept_Handler_Records
7463 (N : Node_Id) return List_Id; -- List5
7465 function Accept_Statement
7466 (N : Node_Id) return Node_Id; -- Node2
7468 function Access_Definition
7469 (N : Node_Id) return Node_Id; -- Node3
7471 function Access_To_Subprogram_Definition
7472 (N : Node_Id) return Node_Id; -- Node3
7474 function Access_Types_To_Process
7475 (N : Node_Id) return Elist_Id; -- Elist2
7478 (N : Node_Id) return List_Id; -- List1
7480 function Activation_Chain_Entity
7481 (N : Node_Id) return Node_Id; -- Node3
7483 function Acts_As_Spec
7484 (N : Node_Id) return Boolean; -- Flag4
7486 function Actual_Designated_Subtype
7487 (N : Node_Id) return Node_Id; -- Node4
7489 function Address_Warning_Posted
7490 (N : Node_Id) return Boolean; -- Flag18
7492 function Aggregate_Bounds
7493 (N : Node_Id) return Node_Id; -- Node3
7495 function Aliased_Present
7496 (N : Node_Id) return Boolean; -- Flag4
7499 (N : Node_Id) return Boolean; -- Flag11
7501 function All_Present
7502 (N : Node_Id) return Boolean; -- Flag15
7504 function Alternatives
7505 (N : Node_Id) return List_Id; -- List4
7507 function Ancestor_Part
7508 (N : Node_Id) return Node_Id; -- Node3
7510 function Array_Aggregate
7511 (N : Node_Id) return Node_Id; -- Node3
7513 function Assignment_OK
7514 (N : Node_Id) return Boolean; -- Flag15
7516 function Associated_Node
7517 (N : Node_Id) return Node_Id; -- Node4
7519 function At_End_Proc
7520 (N : Node_Id) return Node_Id; -- Node1
7522 function Attribute_Name
7523 (N : Node_Id) return Name_Id; -- Name2
7525 function Aux_Decls_Node
7526 (N : Node_Id) return Node_Id; -- Node5
7528 function Backwards_OK
7529 (N : Node_Id) return Boolean; -- Flag6
7531 function Bad_Is_Detected
7532 (N : Node_Id) return Boolean; -- Flag15
7535 (N : Node_Id) return Boolean; -- Flag5
7537 function Body_Required
7538 (N : Node_Id) return Boolean; -- Flag13
7540 function Body_To_Inline
7541 (N : Node_Id) return Node_Id; -- Node3
7543 function Box_Present
7544 (N : Node_Id) return Boolean; -- Flag15
7546 function Char_Literal_Value
7547 (N : Node_Id) return Uint; -- Uint2
7550 (N : Node_Id) return Name_Id; -- Name1
7552 function Check_Address_Alignment
7553 (N : Node_Id) return Boolean; -- Flag11
7555 function Choice_Parameter
7556 (N : Node_Id) return Node_Id; -- Node2
7559 (N : Node_Id) return List_Id; -- List1
7561 function Coextensions
7562 (N : Node_Id) return Elist_Id; -- Elist4
7564 function Comes_From_Extended_Return_Statement
7565 (N : Node_Id) return Boolean; -- Flag18
7567 function Compile_Time_Known_Aggregate
7568 (N : Node_Id) return Boolean; -- Flag18
7570 function Component_Associations
7571 (N : Node_Id) return List_Id; -- List2
7573 function Component_Clauses
7574 (N : Node_Id) return List_Id; -- List3
7576 function Component_Definition
7577 (N : Node_Id) return Node_Id; -- Node4
7579 function Component_Items
7580 (N : Node_Id) return List_Id; -- List3
7582 function Component_List
7583 (N : Node_Id) return Node_Id; -- Node1
7585 function Component_Name
7586 (N : Node_Id) return Node_Id; -- Node1
7589 (N : Node_Id) return Node_Id; -- Node1
7591 function Condition_Actions
7592 (N : Node_Id) return List_Id; -- List3
7594 function Config_Pragmas
7595 (N : Node_Id) return List_Id; -- List4
7597 function Constant_Present
7598 (N : Node_Id) return Boolean; -- Flag17
7601 (N : Node_Id) return Node_Id; -- Node3
7603 function Constraints
7604 (N : Node_Id) return List_Id; -- List1
7606 function Context_Installed
7607 (N : Node_Id) return Boolean; -- Flag13
7609 function Context_Items
7610 (N : Node_Id) return List_Id; -- List1
7612 function Controlling_Argument
7613 (N : Node_Id) return Node_Id; -- Node1
7615 function Conversion_OK
7616 (N : Node_Id) return Boolean; -- Flag14
7618 function Corresponding_Body
7619 (N : Node_Id) return Node_Id; -- Node5
7621 function Corresponding_Formal_Spec
7622 (N : Node_Id) return Node_Id; -- Node3
7624 function Corresponding_Generic_Association
7625 (N : Node_Id) return Node_Id; -- Node5
7627 function Corresponding_Integer_Value
7628 (N : Node_Id) return Uint; -- Uint4
7630 function Corresponding_Spec
7631 (N : Node_Id) return Node_Id; -- Node5
7633 function Corresponding_Stub
7634 (N : Node_Id) return Node_Id; -- Node3
7636 function Dcheck_Function
7637 (N : Node_Id) return Entity_Id; -- Node5
7639 function Debug_Statement
7640 (N : Node_Id) return Node_Id; -- Node3
7642 function Declarations
7643 (N : Node_Id) return List_Id; -- List2
7645 function Default_Expression
7646 (N : Node_Id) return Node_Id; -- Node5
7648 function Default_Name
7649 (N : Node_Id) return Node_Id; -- Node2
7651 function Defining_Identifier
7652 (N : Node_Id) return Entity_Id; -- Node1
7654 function Defining_Unit_Name
7655 (N : Node_Id) return Node_Id; -- Node1
7657 function Delay_Alternative
7658 (N : Node_Id) return Node_Id; -- Node4
7660 function Delay_Statement
7661 (N : Node_Id) return Node_Id; -- Node2
7663 function Delta_Expression
7664 (N : Node_Id) return Node_Id; -- Node3
7666 function Digits_Expression
7667 (N : Node_Id) return Node_Id; -- Node2
7669 function Discr_Check_Funcs_Built
7670 (N : Node_Id) return Boolean; -- Flag11
7672 function Discrete_Choices
7673 (N : Node_Id) return List_Id; -- List4
7675 function Discrete_Range
7676 (N : Node_Id) return Node_Id; -- Node4
7678 function Discrete_Subtype_Definition
7679 (N : Node_Id) return Node_Id; -- Node4
7681 function Discrete_Subtype_Definitions
7682 (N : Node_Id) return List_Id; -- List2
7684 function Discriminant_Specifications
7685 (N : Node_Id) return List_Id; -- List4
7687 function Discriminant_Type
7688 (N : Node_Id) return Node_Id; -- Node5
7690 function Do_Accessibility_Check
7691 (N : Node_Id) return Boolean; -- Flag13
7693 function Do_Discriminant_Check
7694 (N : Node_Id) return Boolean; -- Flag13
7696 function Do_Division_Check
7697 (N : Node_Id) return Boolean; -- Flag13
7699 function Do_Length_Check
7700 (N : Node_Id) return Boolean; -- Flag4
7702 function Do_Overflow_Check
7703 (N : Node_Id) return Boolean; -- Flag17
7705 function Do_Range_Check
7706 (N : Node_Id) return Boolean; -- Flag9
7708 function Do_Storage_Check
7709 (N : Node_Id) return Boolean; -- Flag17
7711 function Do_Tag_Check
7712 (N : Node_Id) return Boolean; -- Flag13
7714 function Elaborate_All_Desirable
7715 (N : Node_Id) return Boolean; -- Flag9
7717 function Elaborate_All_Present
7718 (N : Node_Id) return Boolean; -- Flag14
7720 function Elaborate_Desirable
7721 (N : Node_Id) return Boolean; -- Flag11
7723 function Elaborate_Present
7724 (N : Node_Id) return Boolean; -- Flag4
7726 function Elaboration_Boolean
7727 (N : Node_Id) return Node_Id; -- Node2
7729 function Else_Actions
7730 (N : Node_Id) return List_Id; -- List3
7732 function Else_Statements
7733 (N : Node_Id) return List_Id; -- List4
7735 function Elsif_Parts
7736 (N : Node_Id) return List_Id; -- List3
7738 function Enclosing_Variant
7739 (N : Node_Id) return Node_Id; -- Node2
7742 (N : Node_Id) return Node_Id; -- Node4
7745 (N : Node_Id) return Uint; -- Uint5
7748 (N : Node_Id) return Node_Id; -- Node4
7750 function Entity_Or_Associated_Node
7751 (N : Node_Id) return Node_Id; -- Node4
7753 function Entry_Body_Formal_Part
7754 (N : Node_Id) return Node_Id; -- Node5
7756 function Entry_Call_Alternative
7757 (N : Node_Id) return Node_Id; -- Node1
7759 function Entry_Call_Statement
7760 (N : Node_Id) return Node_Id; -- Node1
7762 function Entry_Direct_Name
7763 (N : Node_Id) return Node_Id; -- Node1
7765 function Entry_Index
7766 (N : Node_Id) return Node_Id; -- Node5
7768 function Entry_Index_Specification
7769 (N : Node_Id) return Node_Id; -- Node4
7772 (N : Node_Id) return Node_Id; -- Node5
7774 function Exception_Choices
7775 (N : Node_Id) return List_Id; -- List4
7777 function Exception_Handlers
7778 (N : Node_Id) return List_Id; -- List5
7780 function Exception_Junk
7781 (N : Node_Id) return Boolean; -- Flag8
7783 function Exception_Label
7784 (N : Node_Id) return Node_Id; -- Node5
7786 function Explicit_Actual_Parameter
7787 (N : Node_Id) return Node_Id; -- Node3
7789 function Expansion_Delayed
7790 (N : Node_Id) return Boolean; -- Flag11
7792 function Explicit_Generic_Actual_Parameter
7793 (N : Node_Id) return Node_Id; -- Node1
7796 (N : Node_Id) return Node_Id; -- Node3
7798 function Expressions
7799 (N : Node_Id) return List_Id; -- List1
7802 (N : Node_Id) return Node_Id; -- Node3
7804 function First_Inlined_Subprogram
7805 (N : Node_Id) return Entity_Id; -- Node3
7808 (N : Node_Id) return Boolean; -- Flag5
7810 function First_Named_Actual
7811 (N : Node_Id) return Node_Id; -- Node4
7813 function First_Real_Statement
7814 (N : Node_Id) return Node_Id; -- Node2
7816 function First_Subtype_Link
7817 (N : Node_Id) return Entity_Id; -- Node5
7819 function Float_Truncate
7820 (N : Node_Id) return Boolean; -- Flag11
7822 function Formal_Type_Definition
7823 (N : Node_Id) return Node_Id; -- Node3
7825 function Forwards_OK
7826 (N : Node_Id) return Boolean; -- Flag5
7828 function From_At_End
7829 (N : Node_Id) return Boolean; -- Flag4
7831 function From_At_Mod
7832 (N : Node_Id) return Boolean; -- Flag4
7834 function From_Default
7835 (N : Node_Id) return Boolean; -- Flag6
7837 function Generic_Associations
7838 (N : Node_Id) return List_Id; -- List3
7840 function Generic_Formal_Declarations
7841 (N : Node_Id) return List_Id; -- List2
7843 function Generic_Parent
7844 (N : Node_Id) return Node_Id; -- Node5
7846 function Generic_Parent_Type
7847 (N : Node_Id) return Node_Id; -- Node4
7849 function Handled_Statement_Sequence
7850 (N : Node_Id) return Node_Id; -- Node4
7852 function Handler_List_Entry
7853 (N : Node_Id) return Node_Id; -- Node2
7855 function Has_Created_Identifier
7856 (N : Node_Id) return Boolean; -- Flag15
7858 function Has_Dynamic_Length_Check
7859 (N : Node_Id) return Boolean; -- Flag10
7861 function Has_Dynamic_Range_Check
7862 (N : Node_Id) return Boolean; -- Flag12
7864 function Has_Init_Expression
7865 (N : Node_Id) return Boolean; -- Flag14
7867 function Has_Local_Raise
7868 (N : Node_Id) return Boolean; -- Flag8
7870 function Has_No_Elaboration_Code
7871 (N : Node_Id) return Boolean; -- Flag17
7873 function Has_Priority_Pragma
7874 (N : Node_Id) return Boolean; -- Flag6
7876 function Has_Private_View
7877 (N : Node_Id) return Boolean; -- Flag11
7879 function Has_Relative_Deadline_Pragma
7880 (N : Node_Id) return Boolean; -- Flag9
7882 function Has_Self_Reference
7883 (N : Node_Id) return Boolean; -- Flag13
7885 function Has_Storage_Size_Pragma
7886 (N : Node_Id) return Boolean; -- Flag5
7888 function Has_Task_Info_Pragma
7889 (N : Node_Id) return Boolean; -- Flag7
7891 function Has_Task_Name_Pragma
7892 (N : Node_Id) return Boolean; -- Flag8
7894 function Has_Wide_Character
7895 (N : Node_Id) return Boolean; -- Flag11
7897 function Hidden_By_Use_Clause
7898 (N : Node_Id) return Elist_Id; -- Elist4
7901 (N : Node_Id) return Node_Id; -- Node2
7904 (N : Node_Id) return Node_Id; -- Node1
7906 function Interface_List
7907 (N : Node_Id) return List_Id; -- List2
7909 function Interface_Present
7910 (N : Node_Id) return Boolean; -- Flag16
7912 function Implicit_With
7913 (N : Node_Id) return Boolean; -- Flag16
7916 (N : Node_Id) return Boolean; -- Flag15
7918 function Includes_Infinities
7919 (N : Node_Id) return Boolean; -- Flag11
7921 function Instance_Spec
7922 (N : Node_Id) return Node_Id; -- Node5
7925 (N : Node_Id) return Uint; -- Uint3
7927 function Is_Asynchronous_Call_Block
7928 (N : Node_Id) return Boolean; -- Flag7
7930 function Is_Component_Left_Opnd
7931 (N : Node_Id) return Boolean; -- Flag13
7933 function Is_Component_Right_Opnd
7934 (N : Node_Id) return Boolean; -- Flag14
7936 function Is_Controlling_Actual
7937 (N : Node_Id) return Boolean; -- Flag16
7939 function Is_Dynamic_Coextension
7940 (N : Node_Id) return Boolean; -- Flag18
7942 function Is_Entry_Barrier_Function
7943 (N : Node_Id) return Boolean; -- Flag8
7945 function Is_Expanded_Build_In_Place_Call
7946 (N : Node_Id) return Boolean; -- Flag11
7948 function Is_Folded_In_Parser
7949 (N : Node_Id) return Boolean; -- Flag4
7951 function Is_In_Discriminant_Check
7952 (N : Node_Id) return Boolean; -- Flag11
7954 function Is_Machine_Number
7955 (N : Node_Id) return Boolean; -- Flag11
7957 function Is_Null_Loop
7958 (N : Node_Id) return Boolean; -- Flag16
7960 function Is_Overloaded
7961 (N : Node_Id) return Boolean; -- Flag5
7963 function Is_Power_Of_2_For_Shift
7964 (N : Node_Id) return Boolean; -- Flag13
7966 function Is_Protected_Subprogram_Body
7967 (N : Node_Id) return Boolean; -- Flag7
7969 function Is_Static_Coextension
7970 (N : Node_Id) return Boolean; -- Flag14
7972 function Is_Static_Expression
7973 (N : Node_Id) return Boolean; -- Flag6
7975 function Is_Subprogram_Descriptor
7976 (N : Node_Id) return Boolean; -- Flag16
7978 function Is_Task_Allocation_Block
7979 (N : Node_Id) return Boolean; -- Flag6
7981 function Is_Task_Master
7982 (N : Node_Id) return Boolean; -- Flag5
7984 function Iteration_Scheme
7985 (N : Node_Id) return Node_Id; -- Node2
7988 (N : Node_Id) return Entity_Id; -- Node1
7990 function Kill_Range_Check
7991 (N : Node_Id) return Boolean; -- Flag11
7993 function Label_Construct
7994 (N : Node_Id) return Node_Id; -- Node2
7997 (N : Node_Id) return Node_Id; -- Node2
8000 (N : Node_Id) return Node_Id; -- Node4
8003 (N : Node_Id) return Boolean; -- Flag6
8005 function Library_Unit
8006 (N : Node_Id) return Node_Id; -- Node4
8008 function Limited_View_Installed
8009 (N : Node_Id) return Boolean; -- Flag18
8011 function Limited_Present
8012 (N : Node_Id) return Boolean; -- Flag17
8015 (N : Node_Id) return List_Id; -- List1
8017 function Local_Raise_Not_OK
8018 (N : Node_Id) return Boolean; -- Flag7
8020 function Local_Raise_Statements
8021 (N : Node_Id) return Elist_Id; -- Elist1
8023 function Loop_Actions
8024 (N : Node_Id) return List_Id; -- List2
8026 function Loop_Parameter_Specification
8027 (N : Node_Id) return Node_Id; -- Node4
8030 (N : Node_Id) return Node_Id; -- Node1
8033 (N : Node_Id) return Node_Id; -- Node2
8036 (N : Node_Id) return Boolean; -- Flag5
8038 function Must_Be_Byte_Aligned
8039 (N : Node_Id) return Boolean; -- Flag14
8041 function Must_Not_Freeze
8042 (N : Node_Id) return Boolean; -- Flag8
8044 function Must_Not_Override
8045 (N : Node_Id) return Boolean; -- Flag15
8047 function Must_Override
8048 (N : Node_Id) return Boolean; -- Flag14
8051 (N : Node_Id) return Node_Id; -- Node2
8054 (N : Node_Id) return List_Id; -- List2
8056 function Next_Entity
8057 (N : Node_Id) return Node_Id; -- Node2
8059 function Next_Named_Actual
8060 (N : Node_Id) return Node_Id; -- Node4
8062 function Next_Pragma
8063 (N : Node_Id) return Node_Id; -- Node1
8065 function Next_Rep_Item
8066 (N : Node_Id) return Node_Id; -- Node5
8068 function Next_Use_Clause
8069 (N : Node_Id) return Node_Id; -- Node3
8071 function No_Ctrl_Actions
8072 (N : Node_Id) return Boolean; -- Flag7
8074 function No_Elaboration_Check
8075 (N : Node_Id) return Boolean; -- Flag14
8077 function No_Entities_Ref_In_Spec
8078 (N : Node_Id) return Boolean; -- Flag8
8080 function No_Initialization
8081 (N : Node_Id) return Boolean; -- Flag13
8083 function No_Truncation
8084 (N : Node_Id) return Boolean; -- Flag17
8086 function Null_Present
8087 (N : Node_Id) return Boolean; -- Flag13
8089 function Null_Exclusion_Present
8090 (N : Node_Id) return Boolean; -- Flag11
8092 function Null_Exclusion_In_Return_Present
8093 (N : Node_Id) return Boolean; -- Flag14
8095 function Null_Record_Present
8096 (N : Node_Id) return Boolean; -- Flag17
8098 function Object_Definition
8099 (N : Node_Id) return Node_Id; -- Node4
8101 function Original_Discriminant
8102 (N : Node_Id) return Node_Id; -- Node2
8104 function Original_Entity
8105 (N : Node_Id) return Entity_Id; -- Node2
8107 function Others_Discrete_Choices
8108 (N : Node_Id) return List_Id; -- List1
8110 function Out_Present
8111 (N : Node_Id) return Boolean; -- Flag17
8113 function Parameter_Associations
8114 (N : Node_Id) return List_Id; -- List3
8116 function Parameter_List_Truncated
8117 (N : Node_Id) return Boolean; -- Flag17
8119 function Parameter_Specifications
8120 (N : Node_Id) return List_Id; -- List3
8122 function Parameter_Type
8123 (N : Node_Id) return Node_Id; -- Node2
8125 function Parent_Spec
8126 (N : Node_Id) return Node_Id; -- Node4
8128 function PPC_Enabled
8129 (N : Node_Id) return Boolean; -- Flag5
8132 (N : Node_Id) return Node_Id; -- Node2
8134 function Pragma_Argument_Associations
8135 (N : Node_Id) return List_Id; -- List2
8137 function Pragma_Identifier
8138 (N : Node_Id) return Node_Id; -- Node4
8140 function Pragmas_After
8141 (N : Node_Id) return List_Id; -- List5
8143 function Pragmas_Before
8144 (N : Node_Id) return List_Id; -- List4
8147 (N : Node_Id) return Node_Id; -- Node3
8149 function Present_Expr
8150 (N : Node_Id) return Uint; -- Uint3
8153 (N : Node_Id) return Boolean; -- Flag6
8155 function Print_In_Hex
8156 (N : Node_Id) return Boolean; -- Flag13
8158 function Private_Declarations
8159 (N : Node_Id) return List_Id; -- List3
8161 function Private_Present
8162 (N : Node_Id) return Boolean; -- Flag15
8164 function Procedure_To_Call
8165 (N : Node_Id) return Node_Id; -- Node2
8167 function Proper_Body
8168 (N : Node_Id) return Node_Id; -- Node1
8170 function Protected_Definition
8171 (N : Node_Id) return Node_Id; -- Node3
8173 function Protected_Present
8174 (N : Node_Id) return Boolean; -- Flag6
8176 function Raises_Constraint_Error
8177 (N : Node_Id) return Boolean; -- Flag7
8179 function Range_Constraint
8180 (N : Node_Id) return Node_Id; -- Node4
8182 function Range_Expression
8183 (N : Node_Id) return Node_Id; -- Node4
8185 function Real_Range_Specification
8186 (N : Node_Id) return Node_Id; -- Node4
8189 (N : Node_Id) return Ureal; -- Ureal3
8192 (N : Node_Id) return Uint; -- Uint3
8194 function Record_Extension_Part
8195 (N : Node_Id) return Node_Id; -- Node3
8197 function Redundant_Use
8198 (N : Node_Id) return Boolean; -- Flag13
8200 function Renaming_Exception
8201 (N : Node_Id) return Node_Id; -- Node2
8203 function Result_Definition
8204 (N : Node_Id) return Node_Id; -- Node4
8206 function Return_Object_Declarations
8207 (N : Node_Id) return List_Id; -- List3
8209 function Return_Statement_Entity
8210 (N : Node_Id) return Node_Id; -- Node5
8212 function Reverse_Present
8213 (N : Node_Id) return Boolean; -- Flag15
8216 (N : Node_Id) return Node_Id; -- Node3
8218 function Rounded_Result
8219 (N : Node_Id) return Boolean; -- Flag18
8222 (N : Node_Id) return Node_Id; -- Node3
8224 function Select_Alternatives
8225 (N : Node_Id) return List_Id; -- List1
8227 function Selector_Name
8228 (N : Node_Id) return Node_Id; -- Node2
8230 function Selector_Names
8231 (N : Node_Id) return List_Id; -- List1
8233 function Shift_Count_OK
8234 (N : Node_Id) return Boolean; -- Flag4
8236 function Source_Type
8237 (N : Node_Id) return Entity_Id; -- Node1
8239 function Specification
8240 (N : Node_Id) return Node_Id; -- Node1
8243 (N : Node_Id) return List_Id; -- List3
8245 function Static_Processing_OK
8246 (N : Node_Id) return Boolean; -- Flag4
8248 function Storage_Pool
8249 (N : Node_Id) return Node_Id; -- Node1
8252 (N : Node_Id) return String_Id; -- Str3
8254 function Subtype_Indication
8255 (N : Node_Id) return Node_Id; -- Node5
8257 function Subtype_Mark
8258 (N : Node_Id) return Node_Id; -- Node4
8260 function Subtype_Marks
8261 (N : Node_Id) return List_Id; -- List2
8263 function Suppress_Loop_Warnings
8264 (N : Node_Id) return Boolean; -- Flag17
8266 function Synchronized_Present
8267 (N : Node_Id) return Boolean; -- Flag7
8269 function Tagged_Present
8270 (N : Node_Id) return Boolean; -- Flag15
8272 function Target_Type
8273 (N : Node_Id) return Entity_Id; -- Node2
8275 function Task_Definition
8276 (N : Node_Id) return Node_Id; -- Node3
8278 function Task_Present
8279 (N : Node_Id) return Boolean; -- Flag5
8281 function Then_Actions
8282 (N : Node_Id) return List_Id; -- List2
8284 function Then_Statements
8285 (N : Node_Id) return List_Id; -- List2
8287 function Treat_Fixed_As_Integer
8288 (N : Node_Id) return Boolean; -- Flag14
8290 function Triggering_Alternative
8291 (N : Node_Id) return Node_Id; -- Node1
8293 function Triggering_Statement
8294 (N : Node_Id) return Node_Id; -- Node1
8297 (N : Node_Id) return Elist_Id; -- Elist3
8299 function Type_Definition
8300 (N : Node_Id) return Node_Id; -- Node3
8303 (N : Node_Id) return Node_Id; -- Node2
8305 function Unknown_Discriminants_Present
8306 (N : Node_Id) return Boolean; -- Flag13
8308 function Unreferenced_In_Spec
8309 (N : Node_Id) return Boolean; -- Flag7
8311 function Variant_Part
8312 (N : Node_Id) return Node_Id; -- Node4
8315 (N : Node_Id) return List_Id; -- List1
8317 function Visible_Declarations
8318 (N : Node_Id) return List_Id; -- List2
8320 function Was_Originally_Stub
8321 (N : Node_Id) return Boolean; -- Flag13
8323 function Zero_Cost_Handling
8324 (N : Node_Id) return Boolean; -- Flag5
8326 -- End functions (note used by xsinfo utility program to end processing)
8328 ----------------------------
8329 -- Node Update Procedures --
8330 ----------------------------
8332 -- These are the corresponding node update routines, which again provide
8333 -- a high level logical access with type checking. In addition to setting
8334 -- the indicated field of the node N to the given Val, in the case of
8335 -- tree pointers (List1-4), the parent pointer of the Val node is set to
8336 -- point back to node N. This automates the setting of the parent pointer.
8338 procedure Set_ABE_Is_Certain
8339 (N : Node_Id; Val : Boolean := True); -- Flag18
8341 procedure Set_Abort_Present
8342 (N : Node_Id; Val : Boolean := True); -- Flag15
8344 procedure Set_Abortable_Part
8345 (N : Node_Id; Val : Node_Id); -- Node2
8347 procedure Set_Abstract_Present
8348 (N : Node_Id; Val : Boolean := True); -- Flag4
8350 procedure Set_Accept_Handler_Records
8351 (N : Node_Id; Val : List_Id); -- List5
8353 procedure Set_Accept_Statement
8354 (N : Node_Id; Val : Node_Id); -- Node2
8356 procedure Set_Access_Definition
8357 (N : Node_Id; Val : Node_Id); -- Node3
8359 procedure Set_Access_To_Subprogram_Definition
8360 (N : Node_Id; Val : Node_Id); -- Node3
8362 procedure Set_Access_Types_To_Process
8363 (N : Node_Id; Val : Elist_Id); -- Elist2
8365 procedure Set_Actions
8366 (N : Node_Id; Val : List_Id); -- List1
8368 procedure Set_Activation_Chain_Entity
8369 (N : Node_Id; Val : Node_Id); -- Node3
8371 procedure Set_Acts_As_Spec
8372 (N : Node_Id; Val : Boolean := True); -- Flag4
8374 procedure Set_Actual_Designated_Subtype
8375 (N : Node_Id; Val : Node_Id); -- Node4
8377 procedure Set_Address_Warning_Posted
8378 (N : Node_Id; Val : Boolean := True); -- Flag18
8380 procedure Set_Aggregate_Bounds
8381 (N : Node_Id; Val : Node_Id); -- Node3
8383 procedure Set_Aliased_Present
8384 (N : Node_Id; Val : Boolean := True); -- Flag4
8386 procedure Set_All_Others
8387 (N : Node_Id; Val : Boolean := True); -- Flag11
8389 procedure Set_All_Present
8390 (N : Node_Id; Val : Boolean := True); -- Flag15
8392 procedure Set_Alternatives
8393 (N : Node_Id; Val : List_Id); -- List4
8395 procedure Set_Ancestor_Part
8396 (N : Node_Id; Val : Node_Id); -- Node3
8398 procedure Set_Array_Aggregate
8399 (N : Node_Id; Val : Node_Id); -- Node3
8401 procedure Set_Assignment_OK
8402 (N : Node_Id; Val : Boolean := True); -- Flag15
8404 procedure Set_Associated_Node
8405 (N : Node_Id; Val : Node_Id); -- Node4
8407 procedure Set_Attribute_Name
8408 (N : Node_Id; Val : Name_Id); -- Name2
8410 procedure Set_At_End_Proc
8411 (N : Node_Id; Val : Node_Id); -- Node1
8413 procedure Set_Aux_Decls_Node
8414 (N : Node_Id; Val : Node_Id); -- Node5
8416 procedure Set_Backwards_OK
8417 (N : Node_Id; Val : Boolean := True); -- Flag6
8419 procedure Set_Bad_Is_Detected
8420 (N : Node_Id; Val : Boolean := True); -- Flag15
8422 procedure Set_Body_Required
8423 (N : Node_Id; Val : Boolean := True); -- Flag13
8425 procedure Set_Body_To_Inline
8426 (N : Node_Id; Val : Node_Id); -- Node3
8428 procedure Set_Box_Present
8429 (N : Node_Id; Val : Boolean := True); -- Flag15
8431 procedure Set_By_Ref
8432 (N : Node_Id; Val : Boolean := True); -- Flag5
8434 procedure Set_Char_Literal_Value
8435 (N : Node_Id; Val : Uint); -- Uint2
8438 (N : Node_Id; Val : Name_Id); -- Name1
8440 procedure Set_Check_Address_Alignment
8441 (N : Node_Id; Val : Boolean := True); -- Flag11
8443 procedure Set_Choice_Parameter
8444 (N : Node_Id; Val : Node_Id); -- Node2
8446 procedure Set_Coextensions
8447 (N : Node_Id; Val : Elist_Id); -- Elist4
8449 procedure Set_Choices
8450 (N : Node_Id; Val : List_Id); -- List1
8452 procedure Set_Comes_From_Extended_Return_Statement
8453 (N : Node_Id; Val : Boolean := True); -- Flag18
8455 procedure Set_Compile_Time_Known_Aggregate
8456 (N : Node_Id; Val : Boolean := True); -- Flag18
8458 procedure Set_Component_Associations
8459 (N : Node_Id; Val : List_Id); -- List2
8461 procedure Set_Component_Clauses
8462 (N : Node_Id; Val : List_Id); -- List3
8464 procedure Set_Component_Definition
8465 (N : Node_Id; Val : Node_Id); -- Node4
8467 procedure Set_Component_Items
8468 (N : Node_Id; Val : List_Id); -- List3
8470 procedure Set_Component_List
8471 (N : Node_Id; Val : Node_Id); -- Node1
8473 procedure Set_Component_Name
8474 (N : Node_Id; Val : Node_Id); -- Node1
8476 procedure Set_Condition
8477 (N : Node_Id; Val : Node_Id); -- Node1
8479 procedure Set_Condition_Actions
8480 (N : Node_Id; Val : List_Id); -- List3
8482 procedure Set_Config_Pragmas
8483 (N : Node_Id; Val : List_Id); -- List4
8485 procedure Set_Constant_Present
8486 (N : Node_Id; Val : Boolean := True); -- Flag17
8488 procedure Set_Constraint
8489 (N : Node_Id; Val : Node_Id); -- Node3
8491 procedure Set_Constraints
8492 (N : Node_Id; Val : List_Id); -- List1
8494 procedure Set_Context_Installed
8495 (N : Node_Id; Val : Boolean := True); -- Flag13
8497 procedure Set_Context_Items
8498 (N : Node_Id; Val : List_Id); -- List1
8500 procedure Set_Controlling_Argument
8501 (N : Node_Id; Val : Node_Id); -- Node1
8503 procedure Set_Conversion_OK
8504 (N : Node_Id; Val : Boolean := True); -- Flag14
8506 procedure Set_Corresponding_Body
8507 (N : Node_Id; Val : Node_Id); -- Node5
8509 procedure Set_Corresponding_Formal_Spec
8510 (N : Node_Id; Val : Node_Id); -- Node3
8512 procedure Set_Corresponding_Generic_Association
8513 (N : Node_Id; Val : Node_Id); -- Node5
8515 procedure Set_Corresponding_Integer_Value
8516 (N : Node_Id; Val : Uint); -- Uint4
8518 procedure Set_Corresponding_Spec
8519 (N : Node_Id; Val : Node_Id); -- Node5
8521 procedure Set_Corresponding_Stub
8522 (N : Node_Id; Val : Node_Id); -- Node3
8524 procedure Set_Dcheck_Function
8525 (N : Node_Id; Val : Entity_Id); -- Node5
8527 procedure Set_Debug_Statement
8528 (N : Node_Id; Val : Node_Id); -- Node3
8530 procedure Set_Declarations
8531 (N : Node_Id; Val : List_Id); -- List2
8533 procedure Set_Default_Expression
8534 (N : Node_Id; Val : Node_Id); -- Node5
8536 procedure Set_Default_Name
8537 (N : Node_Id; Val : Node_Id); -- Node2
8539 procedure Set_Defining_Identifier
8540 (N : Node_Id; Val : Entity_Id); -- Node1
8542 procedure Set_Defining_Unit_Name
8543 (N : Node_Id; Val : Node_Id); -- Node1
8545 procedure Set_Delay_Alternative
8546 (N : Node_Id; Val : Node_Id); -- Node4
8548 procedure Set_Delay_Statement
8549 (N : Node_Id; Val : Node_Id); -- Node2
8551 procedure Set_Delta_Expression
8552 (N : Node_Id; Val : Node_Id); -- Node3
8554 procedure Set_Digits_Expression
8555 (N : Node_Id; Val : Node_Id); -- Node2
8557 procedure Set_Discr_Check_Funcs_Built
8558 (N : Node_Id; Val : Boolean := True); -- Flag11
8560 procedure Set_Discrete_Choices
8561 (N : Node_Id; Val : List_Id); -- List4
8563 procedure Set_Discrete_Range
8564 (N : Node_Id; Val : Node_Id); -- Node4
8566 procedure Set_Discrete_Subtype_Definition
8567 (N : Node_Id; Val : Node_Id); -- Node4
8569 procedure Set_Discrete_Subtype_Definitions
8570 (N : Node_Id; Val : List_Id); -- List2
8572 procedure Set_Discriminant_Specifications
8573 (N : Node_Id; Val : List_Id); -- List4
8575 procedure Set_Discriminant_Type
8576 (N : Node_Id; Val : Node_Id); -- Node5
8578 procedure Set_Do_Accessibility_Check
8579 (N : Node_Id; Val : Boolean := True); -- Flag13
8581 procedure Set_Do_Discriminant_Check
8582 (N : Node_Id; Val : Boolean := True); -- Flag13
8584 procedure Set_Do_Division_Check
8585 (N : Node_Id; Val : Boolean := True); -- Flag13
8587 procedure Set_Do_Length_Check
8588 (N : Node_Id; Val : Boolean := True); -- Flag4
8590 procedure Set_Do_Overflow_Check
8591 (N : Node_Id; Val : Boolean := True); -- Flag17
8593 procedure Set_Do_Range_Check
8594 (N : Node_Id; Val : Boolean := True); -- Flag9
8596 procedure Set_Do_Storage_Check
8597 (N : Node_Id; Val : Boolean := True); -- Flag17
8599 procedure Set_Do_Tag_Check
8600 (N : Node_Id; Val : Boolean := True); -- Flag13
8602 procedure Set_Elaborate_All_Desirable
8603 (N : Node_Id; Val : Boolean := True); -- Flag9
8605 procedure Set_Elaborate_All_Present
8606 (N : Node_Id; Val : Boolean := True); -- Flag14
8608 procedure Set_Elaborate_Desirable
8609 (N : Node_Id; Val : Boolean := True); -- Flag11
8611 procedure Set_Elaborate_Present
8612 (N : Node_Id; Val : Boolean := True); -- Flag4
8614 procedure Set_Elaboration_Boolean
8615 (N : Node_Id; Val : Node_Id); -- Node2
8617 procedure Set_Else_Actions
8618 (N : Node_Id; Val : List_Id); -- List3
8620 procedure Set_Else_Statements
8621 (N : Node_Id; Val : List_Id); -- List4
8623 procedure Set_Elsif_Parts
8624 (N : Node_Id; Val : List_Id); -- List3
8626 procedure Set_Enclosing_Variant
8627 (N : Node_Id; Val : Node_Id); -- Node2
8629 procedure Set_End_Label
8630 (N : Node_Id; Val : Node_Id); -- Node4
8632 procedure Set_End_Span
8633 (N : Node_Id; Val : Uint); -- Uint5
8635 procedure Set_Entity
8636 (N : Node_Id; Val : Node_Id); -- Node4
8638 procedure Set_Entry_Body_Formal_Part
8639 (N : Node_Id; Val : Node_Id); -- Node5
8641 procedure Set_Entry_Call_Alternative
8642 (N : Node_Id; Val : Node_Id); -- Node1
8644 procedure Set_Entry_Call_Statement
8645 (N : Node_Id; Val : Node_Id); -- Node1
8647 procedure Set_Entry_Direct_Name
8648 (N : Node_Id; Val : Node_Id); -- Node1
8650 procedure Set_Entry_Index
8651 (N : Node_Id; Val : Node_Id); -- Node5
8653 procedure Set_Entry_Index_Specification
8654 (N : Node_Id; Val : Node_Id); -- Node4
8657 (N : Node_Id; Val : Node_Id); -- Node5
8659 procedure Set_Exception_Choices
8660 (N : Node_Id; Val : List_Id); -- List4
8662 procedure Set_Exception_Handlers
8663 (N : Node_Id; Val : List_Id); -- List5
8665 procedure Set_Exception_Junk
8666 (N : Node_Id; Val : Boolean := True); -- Flag8
8668 procedure Set_Exception_Label
8669 (N : Node_Id; Val : Node_Id); -- Node5
8671 procedure Set_Expansion_Delayed
8672 (N : Node_Id; Val : Boolean := True); -- Flag11
8674 procedure Set_Explicit_Actual_Parameter
8675 (N : Node_Id; Val : Node_Id); -- Node3
8677 procedure Set_Explicit_Generic_Actual_Parameter
8678 (N : Node_Id; Val : Node_Id); -- Node1
8680 procedure Set_Expression
8681 (N : Node_Id; Val : Node_Id); -- Node3
8683 procedure Set_Expressions
8684 (N : Node_Id; Val : List_Id); -- List1
8686 procedure Set_First_Bit
8687 (N : Node_Id; Val : Node_Id); -- Node3
8689 procedure Set_First_Inlined_Subprogram
8690 (N : Node_Id; Val : Entity_Id); -- Node3
8692 procedure Set_First_Name
8693 (N : Node_Id; Val : Boolean := True); -- Flag5
8695 procedure Set_First_Named_Actual
8696 (N : Node_Id; Val : Node_Id); -- Node4
8698 procedure Set_First_Real_Statement
8699 (N : Node_Id; Val : Node_Id); -- Node2
8701 procedure Set_First_Subtype_Link
8702 (N : Node_Id; Val : Entity_Id); -- Node5
8704 procedure Set_Float_Truncate
8705 (N : Node_Id; Val : Boolean := True); -- Flag11
8707 procedure Set_Formal_Type_Definition
8708 (N : Node_Id; Val : Node_Id); -- Node3
8710 procedure Set_Forwards_OK
8711 (N : Node_Id; Val : Boolean := True); -- Flag5
8713 procedure Set_From_At_Mod
8714 (N : Node_Id; Val : Boolean := True); -- Flag4
8716 procedure Set_From_At_End
8717 (N : Node_Id; Val : Boolean := True); -- Flag4
8719 procedure Set_From_Default
8720 (N : Node_Id; Val : Boolean := True); -- Flag6
8722 procedure Set_Generic_Associations
8723 (N : Node_Id; Val : List_Id); -- List3
8725 procedure Set_Generic_Formal_Declarations
8726 (N : Node_Id; Val : List_Id); -- List2
8728 procedure Set_Generic_Parent
8729 (N : Node_Id; Val : Node_Id); -- Node5
8731 procedure Set_Generic_Parent_Type
8732 (N : Node_Id; Val : Node_Id); -- Node4
8734 procedure Set_Handled_Statement_Sequence
8735 (N : Node_Id; Val : Node_Id); -- Node4
8737 procedure Set_Handler_List_Entry
8738 (N : Node_Id; Val : Node_Id); -- Node2
8740 procedure Set_Has_Created_Identifier
8741 (N : Node_Id; Val : Boolean := True); -- Flag15
8743 procedure Set_Has_Dynamic_Length_Check
8744 (N : Node_Id; Val : Boolean := True); -- Flag10
8746 procedure Set_Has_Dynamic_Range_Check
8747 (N : Node_Id; Val : Boolean := True); -- Flag12
8749 procedure Set_Has_Init_Expression
8750 (N : Node_Id; Val : Boolean := True); -- Flag14
8752 procedure Set_Has_Local_Raise
8753 (N : Node_Id; Val : Boolean := True); -- Flag8
8755 procedure Set_Has_No_Elaboration_Code
8756 (N : Node_Id; Val : Boolean := True); -- Flag17
8758 procedure Set_Has_Priority_Pragma
8759 (N : Node_Id; Val : Boolean := True); -- Flag6
8761 procedure Set_Has_Private_View
8762 (N : Node_Id; Val : Boolean := True); -- Flag11
8764 procedure Set_Has_Relative_Deadline_Pragma
8765 (N : Node_Id; Val : Boolean := True); -- Flag9
8767 procedure Set_Has_Self_Reference
8768 (N : Node_Id; Val : Boolean := True); -- Flag13
8770 procedure Set_Has_Storage_Size_Pragma
8771 (N : Node_Id; Val : Boolean := True); -- Flag5
8773 procedure Set_Has_Task_Info_Pragma
8774 (N : Node_Id; Val : Boolean := True); -- Flag7
8776 procedure Set_Has_Task_Name_Pragma
8777 (N : Node_Id; Val : Boolean := True); -- Flag8
8779 procedure Set_Has_Wide_Character
8780 (N : Node_Id; Val : Boolean := True); -- Flag11
8782 procedure Set_Hidden_By_Use_Clause
8783 (N : Node_Id; Val : Elist_Id); -- Elist4
8785 procedure Set_High_Bound
8786 (N : Node_Id; Val : Node_Id); -- Node2
8788 procedure Set_Identifier
8789 (N : Node_Id; Val : Node_Id); -- Node1
8791 procedure Set_Interface_List
8792 (N : Node_Id; Val : List_Id); -- List2
8794 procedure Set_Interface_Present
8795 (N : Node_Id; Val : Boolean := True); -- Flag16
8797 procedure Set_Implicit_With
8798 (N : Node_Id; Val : Boolean := True); -- Flag16
8800 procedure Set_In_Present
8801 (N : Node_Id; Val : Boolean := True); -- Flag15
8803 procedure Set_Includes_Infinities
8804 (N : Node_Id; Val : Boolean := True); -- Flag11
8806 procedure Set_Instance_Spec
8807 (N : Node_Id; Val : Node_Id); -- Node5
8809 procedure Set_Intval
8810 (N : Node_Id; Val : Uint); -- Uint3
8812 procedure Set_Is_Asynchronous_Call_Block
8813 (N : Node_Id; Val : Boolean := True); -- Flag7
8815 procedure Set_Is_Component_Left_Opnd
8816 (N : Node_Id; Val : Boolean := True); -- Flag13
8818 procedure Set_Is_Component_Right_Opnd
8819 (N : Node_Id; Val : Boolean := True); -- Flag14
8821 procedure Set_Is_Controlling_Actual
8822 (N : Node_Id; Val : Boolean := True); -- Flag16
8824 procedure Set_Is_Dynamic_Coextension
8825 (N : Node_Id; Val : Boolean := True); -- Flag18
8827 procedure Set_Is_Entry_Barrier_Function
8828 (N : Node_Id; Val : Boolean := True); -- Flag8
8830 procedure Set_Is_Expanded_Build_In_Place_Call
8831 (N : Node_Id; Val : Boolean := True); -- Flag11
8833 procedure Set_Is_Folded_In_Parser
8834 (N : Node_Id; Val : Boolean := True); -- Flag4
8836 procedure Set_Is_In_Discriminant_Check
8837 (N : Node_Id; Val : Boolean := True); -- Flag11
8839 procedure Set_Is_Machine_Number
8840 (N : Node_Id; Val : Boolean := True); -- Flag11
8842 procedure Set_Is_Null_Loop
8843 (N : Node_Id; Val : Boolean := True); -- Flag16
8845 procedure Set_Is_Overloaded
8846 (N : Node_Id; Val : Boolean := True); -- Flag5
8848 procedure Set_Is_Power_Of_2_For_Shift
8849 (N : Node_Id; Val : Boolean := True); -- Flag13
8851 procedure Set_Is_Protected_Subprogram_Body
8852 (N : Node_Id; Val : Boolean := True); -- Flag7
8854 procedure Set_Is_Static_Coextension
8855 (N : Node_Id; Val : Boolean := True); -- Flag14
8857 procedure Set_Is_Static_Expression
8858 (N : Node_Id; Val : Boolean := True); -- Flag6
8860 procedure Set_Is_Subprogram_Descriptor
8861 (N : Node_Id; Val : Boolean := True); -- Flag16
8863 procedure Set_Is_Task_Allocation_Block
8864 (N : Node_Id; Val : Boolean := True); -- Flag6
8866 procedure Set_Is_Task_Master
8867 (N : Node_Id; Val : Boolean := True); -- Flag5
8869 procedure Set_Iteration_Scheme
8870 (N : Node_Id; Val : Node_Id); -- Node2
8873 (N : Node_Id; Val : Entity_Id); -- Node1
8875 procedure Set_Kill_Range_Check
8876 (N : Node_Id; Val : Boolean := True); -- Flag11
8878 procedure Set_Last_Bit
8879 (N : Node_Id; Val : Node_Id); -- Node4
8881 procedure Set_Last_Name
8882 (N : Node_Id; Val : Boolean := True); -- Flag6
8884 procedure Set_Library_Unit
8885 (N : Node_Id; Val : Node_Id); -- Node4
8887 procedure Set_Label_Construct
8888 (N : Node_Id; Val : Node_Id); -- Node2
8890 procedure Set_Left_Opnd
8891 (N : Node_Id; Val : Node_Id); -- Node2
8893 procedure Set_Limited_View_Installed
8894 (N : Node_Id; Val : Boolean := True); -- Flag18
8896 procedure Set_Limited_Present
8897 (N : Node_Id; Val : Boolean := True); -- Flag17
8899 procedure Set_Literals
8900 (N : Node_Id; Val : List_Id); -- List1
8902 procedure Set_Local_Raise_Not_OK
8903 (N : Node_Id; Val : Boolean := True); -- Flag7
8905 procedure Set_Local_Raise_Statements
8906 (N : Node_Id; Val : Elist_Id); -- Elist1
8908 procedure Set_Loop_Actions
8909 (N : Node_Id; Val : List_Id); -- List2
8911 procedure Set_Loop_Parameter_Specification
8912 (N : Node_Id; Val : Node_Id); -- Node4
8914 procedure Set_Low_Bound
8915 (N : Node_Id; Val : Node_Id); -- Node1
8917 procedure Set_Mod_Clause
8918 (N : Node_Id; Val : Node_Id); -- Node2
8920 procedure Set_More_Ids
8921 (N : Node_Id; Val : Boolean := True); -- Flag5
8923 procedure Set_Must_Be_Byte_Aligned
8924 (N : Node_Id; Val : Boolean := True); -- Flag14
8926 procedure Set_Must_Not_Freeze
8927 (N : Node_Id; Val : Boolean := True); -- Flag8
8929 procedure Set_Must_Not_Override
8930 (N : Node_Id; Val : Boolean := True); -- Flag15
8932 procedure Set_Must_Override
8933 (N : Node_Id; Val : Boolean := True); -- Flag14
8936 (N : Node_Id; Val : Node_Id); -- Node2
8939 (N : Node_Id; Val : List_Id); -- List2
8941 procedure Set_Next_Entity
8942 (N : Node_Id; Val : Node_Id); -- Node2
8944 procedure Set_Next_Named_Actual
8945 (N : Node_Id; Val : Node_Id); -- Node4
8947 procedure Set_Next_Pragma
8948 (N : Node_Id; Val : Node_Id); -- Node1
8950 procedure Set_Next_Rep_Item
8951 (N : Node_Id; Val : Node_Id); -- Node5
8953 procedure Set_Next_Use_Clause
8954 (N : Node_Id; Val : Node_Id); -- Node3
8956 procedure Set_No_Ctrl_Actions
8957 (N : Node_Id; Val : Boolean := True); -- Flag7
8959 procedure Set_No_Elaboration_Check
8960 (N : Node_Id; Val : Boolean := True); -- Flag14
8962 procedure Set_No_Entities_Ref_In_Spec
8963 (N : Node_Id; Val : Boolean := True); -- Flag8
8965 procedure Set_No_Initialization
8966 (N : Node_Id; Val : Boolean := True); -- Flag13
8968 procedure Set_No_Truncation
8969 (N : Node_Id; Val : Boolean := True); -- Flag17
8971 procedure Set_Null_Present
8972 (N : Node_Id; Val : Boolean := True); -- Flag13
8974 procedure Set_Null_Exclusion_Present
8975 (N : Node_Id; Val : Boolean := True); -- Flag11
8977 procedure Set_Null_Exclusion_In_Return_Present
8978 (N : Node_Id; Val : Boolean := True); -- Flag14
8980 procedure Set_Null_Record_Present
8981 (N : Node_Id; Val : Boolean := True); -- Flag17
8983 procedure Set_Object_Definition
8984 (N : Node_Id; Val : Node_Id); -- Node4
8986 procedure Set_Original_Discriminant
8987 (N : Node_Id; Val : Node_Id); -- Node2
8989 procedure Set_Original_Entity
8990 (N : Node_Id; Val : Entity_Id); -- Node2
8992 procedure Set_Others_Discrete_Choices
8993 (N : Node_Id; Val : List_Id); -- List1
8995 procedure Set_Out_Present
8996 (N : Node_Id; Val : Boolean := True); -- Flag17
8998 procedure Set_Parameter_Associations
8999 (N : Node_Id; Val : List_Id); -- List3
9001 procedure Set_Parameter_List_Truncated
9002 (N : Node_Id; Val : Boolean := True); -- Flag17
9004 procedure Set_Parameter_Specifications
9005 (N : Node_Id; Val : List_Id); -- List3
9007 procedure Set_Parameter_Type
9008 (N : Node_Id; Val : Node_Id); -- Node2
9010 procedure Set_Parent_Spec
9011 (N : Node_Id; Val : Node_Id); -- Node4
9013 procedure Set_PPC_Enabled
9014 (N : Node_Id; Val : Boolean := True); -- Flag5
9016 procedure Set_Position
9017 (N : Node_Id; Val : Node_Id); -- Node2
9019 procedure Set_Pragma_Argument_Associations
9020 (N : Node_Id; Val : List_Id); -- List2
9022 procedure Set_Pragma_Identifier
9023 (N : Node_Id; Val : Node_Id); -- Node4
9025 procedure Set_Pragmas_After
9026 (N : Node_Id; Val : List_Id); -- List5
9028 procedure Set_Pragmas_Before
9029 (N : Node_Id; Val : List_Id); -- List4
9031 procedure Set_Prefix
9032 (N : Node_Id; Val : Node_Id); -- Node3
9034 procedure Set_Present_Expr
9035 (N : Node_Id; Val : Uint); -- Uint3
9037 procedure Set_Prev_Ids
9038 (N : Node_Id; Val : Boolean := True); -- Flag6
9040 procedure Set_Print_In_Hex
9041 (N : Node_Id; Val : Boolean := True); -- Flag13
9043 procedure Set_Private_Declarations
9044 (N : Node_Id; Val : List_Id); -- List3
9046 procedure Set_Private_Present
9047 (N : Node_Id; Val : Boolean := True); -- Flag15
9049 procedure Set_Procedure_To_Call
9050 (N : Node_Id; Val : Node_Id); -- Node2
9052 procedure Set_Proper_Body
9053 (N : Node_Id; Val : Node_Id); -- Node1
9055 procedure Set_Protected_Definition
9056 (N : Node_Id; Val : Node_Id); -- Node3
9058 procedure Set_Protected_Present
9059 (N : Node_Id; Val : Boolean := True); -- Flag6
9061 procedure Set_Raises_Constraint_Error
9062 (N : Node_Id; Val : Boolean := True); -- Flag7
9064 procedure Set_Range_Constraint
9065 (N : Node_Id; Val : Node_Id); -- Node4
9067 procedure Set_Range_Expression
9068 (N : Node_Id; Val : Node_Id); -- Node4
9070 procedure Set_Real_Range_Specification
9071 (N : Node_Id; Val : Node_Id); -- Node4
9073 procedure Set_Realval
9074 (N : Node_Id; Val : Ureal); -- Ureal3
9076 procedure Set_Reason
9077 (N : Node_Id; Val : Uint); -- Uint3
9079 procedure Set_Record_Extension_Part
9080 (N : Node_Id; Val : Node_Id); -- Node3
9082 procedure Set_Redundant_Use
9083 (N : Node_Id; Val : Boolean := True); -- Flag13
9085 procedure Set_Renaming_Exception
9086 (N : Node_Id; Val : Node_Id); -- Node2
9088 procedure Set_Result_Definition
9089 (N : Node_Id; Val : Node_Id); -- Node4
9091 procedure Set_Return_Object_Declarations
9092 (N : Node_Id; Val : List_Id); -- List3
9094 procedure Set_Return_Statement_Entity
9095 (N : Node_Id; Val : Node_Id); -- Node5
9097 procedure Set_Reverse_Present
9098 (N : Node_Id; Val : Boolean := True); -- Flag15
9100 procedure Set_Right_Opnd
9101 (N : Node_Id; Val : Node_Id); -- Node3
9103 procedure Set_Rounded_Result
9104 (N : Node_Id; Val : Boolean := True); -- Flag18
9107 (N : Node_Id; Val : Node_Id); -- Node3
9109 procedure Set_Select_Alternatives
9110 (N : Node_Id; Val : List_Id); -- List1
9112 procedure Set_Selector_Name
9113 (N : Node_Id; Val : Node_Id); -- Node2
9115 procedure Set_Selector_Names
9116 (N : Node_Id; Val : List_Id); -- List1
9118 procedure Set_Shift_Count_OK
9119 (N : Node_Id; Val : Boolean := True); -- Flag4
9121 procedure Set_Source_Type
9122 (N : Node_Id; Val : Entity_Id); -- Node1
9124 procedure Set_Specification
9125 (N : Node_Id; Val : Node_Id); -- Node1
9127 procedure Set_Statements
9128 (N : Node_Id; Val : List_Id); -- List3
9130 procedure Set_Static_Processing_OK
9131 (N : Node_Id; Val : Boolean); -- Flag4
9133 procedure Set_Storage_Pool
9134 (N : Node_Id; Val : Node_Id); -- Node1
9136 procedure Set_Strval
9137 (N : Node_Id; Val : String_Id); -- Str3
9139 procedure Set_Subtype_Indication
9140 (N : Node_Id; Val : Node_Id); -- Node5
9142 procedure Set_Subtype_Mark
9143 (N : Node_Id; Val : Node_Id); -- Node4
9145 procedure Set_Subtype_Marks
9146 (N : Node_Id; Val : List_Id); -- List2
9148 procedure Set_Suppress_Loop_Warnings
9149 (N : Node_Id; Val : Boolean := True); -- Flag17
9151 procedure Set_Synchronized_Present
9152 (N : Node_Id; Val : Boolean := True); -- Flag7
9154 procedure Set_Tagged_Present
9155 (N : Node_Id; Val : Boolean := True); -- Flag15
9157 procedure Set_Target_Type
9158 (N : Node_Id; Val : Entity_Id); -- Node2
9160 procedure Set_Task_Definition
9161 (N : Node_Id; Val : Node_Id); -- Node3
9163 procedure Set_Task_Present
9164 (N : Node_Id; Val : Boolean := True); -- Flag5
9166 procedure Set_Then_Actions
9167 (N : Node_Id; Val : List_Id); -- List2
9169 procedure Set_Then_Statements
9170 (N : Node_Id; Val : List_Id); -- List2
9172 procedure Set_Treat_Fixed_As_Integer
9173 (N : Node_Id; Val : Boolean := True); -- Flag14
9175 procedure Set_Triggering_Alternative
9176 (N : Node_Id; Val : Node_Id); -- Node1
9178 procedure Set_Triggering_Statement
9179 (N : Node_Id; Val : Node_Id); -- Node1
9181 procedure Set_TSS_Elist
9182 (N : Node_Id; Val : Elist_Id); -- Elist3
9184 procedure Set_Type_Definition
9185 (N : Node_Id; Val : Node_Id); -- Node3
9188 (N : Node_Id; Val : Node_Id); -- Node2
9190 procedure Set_Unknown_Discriminants_Present
9191 (N : Node_Id; Val : Boolean := True); -- Flag13
9193 procedure Set_Unreferenced_In_Spec
9194 (N : Node_Id; Val : Boolean := True); -- Flag7
9196 procedure Set_Variant_Part
9197 (N : Node_Id; Val : Node_Id); -- Node4
9199 procedure Set_Variants
9200 (N : Node_Id; Val : List_Id); -- List1
9202 procedure Set_Visible_Declarations
9203 (N : Node_Id; Val : List_Id); -- List2
9205 procedure Set_Was_Originally_Stub
9206 (N : Node_Id; Val : Boolean := True); -- Flag13
9208 procedure Set_Zero_Cost_Handling
9209 (N : Node_Id; Val : Boolean := True); -- Flag5
9211 -------------------------
9212 -- Iterator Procedures --
9213 -------------------------
9215 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
9217 procedure Next_Entity (N : in out Node_Id);
9218 procedure Next_Named_Actual (N : in out Node_Id);
9219 procedure Next_Rep_Item (N : in out Node_Id);
9220 procedure Next_Use_Clause (N : in out Node_Id);
9222 --------------------------------------
9223 -- Logical Access to End_Span Field --
9224 --------------------------------------
9226 function End_Location (N : Node_Id) return Source_Ptr;
9227 -- N is an N_If_Statement or N_Case_Statement node, and this
9228 -- function returns the location of the IF token in the END IF
9229 -- sequence by translating the value of the End_Span field.
9231 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
9232 -- N is an N_If_Statement or N_Case_Statement node. This procedure
9233 -- sets the End_Span field to correspond to the given value S. In
9234 -- other words, End_Span is set to the difference between S and
9235 -- Sloc (N), the starting location.
9237 --------------------------------
9238 -- Node_Kind Membership Tests --
9239 --------------------------------
9241 -- The following functions allow a convenient notation for testing whether
9242 -- a Node_Kind value matches any one of a list of possible values. In each
9243 -- case True is returned if the given T argument is equal to any of the V
9244 -- arguments. Note that there is a similar set of functions defined in
9245 -- Atree where the first argument is a Node_Id whose Nkind field is tested.
9250 V2 : Node_Kind) return Boolean;
9256 V3 : Node_Kind) return Boolean;
9263 V4 : Node_Kind) return Boolean;
9271 V5 : Node_Kind) return Boolean;
9280 V6 : Node_Kind) return Boolean;
9290 V7 : Node_Kind) return Boolean;
9301 V8 : Node_Kind) return Boolean;
9303 pragma Inline (Nkind_In);
9304 -- Inline all above functions
9306 -----------------------
9307 -- Utility Functions --
9308 -----------------------
9310 function Pragma_Name (N : Node_Id) return Name_Id;
9311 pragma Inline (Pragma_Name);
9312 -- Convenient function to obtain Chars field of Pragma_Identifier
9314 -----------------------------
9315 -- Syntactic Parent Tables --
9316 -----------------------------
9318 -- These tables show for each node, and for each of the five fields,
9319 -- whether the corresponding field is syntactic (True) or semantic (False).
9320 -- Unused entries are also set to False.
9322 subtype Field_Num is Natural range 1 .. 5;
9324 Is_Syntactic_Field : constant array (Node_Kind, Field_Num) of Boolean := (
9326 -- Following entries can be built automatically from the sinfo sources
9327 -- using the makeisf utility (currently this program is in spitbol).
9330 (1 => True, -- Chars (Name1)
9331 2 => False, -- Original_Discriminant (Node2-Sem)
9332 3 => False, -- unused
9333 4 => False, -- Entity (Node4-Sem)
9334 5 => False), -- Etype (Node5-Sem)
9336 N_Integer_Literal =>
9337 (1 => False, -- unused
9338 2 => False, -- Original_Entity (Node2-Sem)
9339 3 => True, -- Intval (Uint3)
9340 4 => False, -- unused
9341 5 => False), -- Etype (Node5-Sem)
9344 (1 => False, -- unused
9345 2 => False, -- Original_Entity (Node2-Sem)
9346 3 => True, -- Realval (Ureal3)
9347 4 => False, -- Corresponding_Integer_Value (Uint4-Sem)
9348 5 => False), -- Etype (Node5-Sem)
9350 N_Character_Literal =>
9351 (1 => True, -- Chars (Name1)
9352 2 => True, -- Char_Literal_Value (Uint2)
9353 3 => False, -- unused
9354 4 => False, -- Entity (Node4-Sem)
9355 5 => False), -- Etype (Node5-Sem)
9358 (1 => False, -- unused
9359 2 => False, -- unused
9360 3 => True, -- Strval (Str3)
9361 4 => False, -- unused
9362 5 => False), -- Etype (Node5-Sem)
9365 (1 => False, -- Next_Pragma (Node1-Sem)
9366 2 => True, -- Pragma_Argument_Associations (List2)
9367 3 => True, -- Debug_Statement (Node3)
9368 4 => True, -- Pragma_Identifier (Node4)
9369 5 => False), -- Next_Rep_Item (Node5-Sem)
9371 N_Pragma_Argument_Association =>
9372 (1 => True, -- Chars (Name1)
9373 2 => False, -- unused
9374 3 => True, -- Expression (Node3)
9375 4 => False, -- unused
9376 5 => False), -- unused
9378 N_Defining_Identifier =>
9379 (1 => True, -- Chars (Name1)
9380 2 => False, -- Next_Entity (Node2-Sem)
9381 3 => False, -- Scope (Node3-Sem)
9382 4 => False, -- unused
9383 5 => False), -- Etype (Node5-Sem)
9385 N_Full_Type_Declaration =>
9386 (1 => True, -- Defining_Identifier (Node1)
9387 2 => False, -- unused
9388 3 => True, -- Type_Definition (Node3)
9389 4 => True, -- Discriminant_Specifications (List4)
9390 5 => False), -- unused
9392 N_Subtype_Declaration =>
9393 (1 => True, -- Defining_Identifier (Node1)
9394 2 => False, -- unused
9395 3 => False, -- unused
9396 4 => False, -- Generic_Parent_Type (Node4-Sem)
9397 5 => True), -- Subtype_Indication (Node5)
9399 N_Subtype_Indication =>
9400 (1 => False, -- unused
9401 2 => False, -- unused
9402 3 => True, -- Constraint (Node3)
9403 4 => True, -- Subtype_Mark (Node4)
9404 5 => False), -- Etype (Node5-Sem)
9406 N_Object_Declaration =>
9407 (1 => True, -- Defining_Identifier (Node1)
9408 2 => False, -- Handler_List_Entry (Node2-Sem)
9409 3 => True, -- Expression (Node3)
9410 4 => True, -- Object_Definition (Node4)
9411 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
9413 N_Number_Declaration =>
9414 (1 => True, -- Defining_Identifier (Node1)
9415 2 => False, -- unused
9416 3 => True, -- Expression (Node3)
9417 4 => False, -- unused
9418 5 => False), -- unused
9420 N_Derived_Type_Definition =>
9421 (1 => False, -- unused
9422 2 => True, -- Interface_List (List2)
9423 3 => True, -- Record_Extension_Part (Node3)
9424 4 => False, -- unused
9425 5 => True), -- Subtype_Indication (Node5)
9427 N_Range_Constraint =>
9428 (1 => False, -- unused
9429 2 => False, -- unused
9430 3 => False, -- unused
9431 4 => True, -- Range_Expression (Node4)
9432 5 => False), -- unused
9435 (1 => True, -- Low_Bound (Node1)
9436 2 => True, -- High_Bound (Node2)
9437 3 => False, -- unused
9438 4 => False, -- unused
9439 5 => False), -- Etype (Node5-Sem)
9441 N_Enumeration_Type_Definition =>
9442 (1 => True, -- Literals (List1)
9443 2 => False, -- unused
9444 3 => False, -- unused
9445 4 => True, -- End_Label (Node4)
9446 5 => False), -- unused
9448 N_Defining_Character_Literal =>
9449 (1 => True, -- Chars (Name1)
9450 2 => False, -- Next_Entity (Node2-Sem)
9451 3 => False, -- Scope (Node3-Sem)
9452 4 => False, -- unused
9453 5 => False), -- Etype (Node5-Sem)
9455 N_Signed_Integer_Type_Definition =>
9456 (1 => True, -- Low_Bound (Node1)
9457 2 => True, -- High_Bound (Node2)
9458 3 => False, -- unused
9459 4 => False, -- unused
9460 5 => False), -- unused
9462 N_Modular_Type_Definition =>
9463 (1 => False, -- unused
9464 2 => False, -- unused
9465 3 => True, -- Expression (Node3)
9466 4 => False, -- unused
9467 5 => False), -- unused
9469 N_Floating_Point_Definition =>
9470 (1 => False, -- unused
9471 2 => True, -- Digits_Expression (Node2)
9472 3 => False, -- unused
9473 4 => True, -- Real_Range_Specification (Node4)
9474 5 => False), -- unused
9476 N_Real_Range_Specification =>
9477 (1 => True, -- Low_Bound (Node1)
9478 2 => True, -- High_Bound (Node2)
9479 3 => False, -- unused
9480 4 => False, -- unused
9481 5 => False), -- unused
9483 N_Ordinary_Fixed_Point_Definition =>
9484 (1 => False, -- unused
9485 2 => False, -- unused
9486 3 => True, -- Delta_Expression (Node3)
9487 4 => True, -- Real_Range_Specification (Node4)
9488 5 => False), -- unused
9490 N_Decimal_Fixed_Point_Definition =>
9491 (1 => False, -- unused
9492 2 => True, -- Digits_Expression (Node2)
9493 3 => True, -- Delta_Expression (Node3)
9494 4 => True, -- Real_Range_Specification (Node4)
9495 5 => False), -- unused
9497 N_Digits_Constraint =>
9498 (1 => False, -- unused
9499 2 => True, -- Digits_Expression (Node2)
9500 3 => False, -- unused
9501 4 => True, -- Range_Constraint (Node4)
9502 5 => False), -- unused
9504 N_Unconstrained_Array_Definition =>
9505 (1 => False, -- unused
9506 2 => True, -- Subtype_Marks (List2)
9507 3 => False, -- unused
9508 4 => True, -- Component_Definition (Node4)
9509 5 => False), -- unused
9511 N_Constrained_Array_Definition =>
9512 (1 => False, -- unused
9513 2 => True, -- Discrete_Subtype_Definitions (List2)
9514 3 => False, -- unused
9515 4 => True, -- Component_Definition (Node4)
9516 5 => False), -- unused
9518 N_Component_Definition =>
9519 (1 => False, -- unused
9520 2 => False, -- unused
9521 3 => True, -- Access_Definition (Node3)
9522 4 => False, -- unused
9523 5 => True), -- Subtype_Indication (Node5)
9525 N_Discriminant_Specification =>
9526 (1 => True, -- Defining_Identifier (Node1)
9527 2 => False, -- unused
9528 3 => True, -- Expression (Node3)
9529 4 => False, -- unused
9530 5 => True), -- Discriminant_Type (Node5)
9532 N_Index_Or_Discriminant_Constraint =>
9533 (1 => True, -- Constraints (List1)
9534 2 => False, -- unused
9535 3 => False, -- unused
9536 4 => False, -- unused
9537 5 => False), -- unused
9539 N_Discriminant_Association =>
9540 (1 => True, -- Selector_Names (List1)
9541 2 => False, -- unused
9542 3 => True, -- Expression (Node3)
9543 4 => False, -- unused
9544 5 => False), -- unused
9546 N_Record_Definition =>
9547 (1 => True, -- Component_List (Node1)
9548 2 => True, -- Interface_List (List2)
9549 3 => False, -- unused
9550 4 => True, -- End_Label (Node4)
9551 5 => False), -- unused
9554 (1 => False, -- unused
9555 2 => False, -- unused
9556 3 => True, -- Component_Items (List3)
9557 4 => True, -- Variant_Part (Node4)
9558 5 => False), -- unused
9560 N_Component_Declaration =>
9561 (1 => True, -- Defining_Identifier (Node1)
9562 2 => False, -- unused
9563 3 => True, -- Expression (Node3)
9564 4 => True, -- Component_Definition (Node4)
9565 5 => False), -- unused
9568 (1 => True, -- Variants (List1)
9569 2 => True, -- Name (Node2)
9570 3 => False, -- unused
9571 4 => False, -- unused
9572 5 => False), -- unused
9575 (1 => True, -- Component_List (Node1)
9576 2 => False, -- Enclosing_Variant (Node2-Sem)
9577 3 => False, -- Present_Expr (Uint3-Sem)
9578 4 => True, -- Discrete_Choices (List4)
9579 5 => False), -- Dcheck_Function (Node5-Sem)
9582 (1 => False, -- Others_Discrete_Choices (List1-Sem)
9583 2 => False, -- unused
9584 3 => False, -- unused
9585 4 => False, -- unused
9586 5 => False), -- unused
9588 N_Access_To_Object_Definition =>
9589 (1 => False, -- unused
9590 2 => False, -- unused
9591 3 => False, -- unused
9592 4 => False, -- unused
9593 5 => True), -- Subtype_Indication (Node5)
9595 N_Access_Function_Definition =>
9596 (1 => False, -- unused
9597 2 => False, -- unused
9598 3 => True, -- Parameter_Specifications (List3)
9599 4 => True, -- Result_Definition (Node4)
9600 5 => False), -- unused
9602 N_Access_Procedure_Definition =>
9603 (1 => False, -- unused
9604 2 => False, -- unused
9605 3 => True, -- Parameter_Specifications (List3)
9606 4 => False, -- unused
9607 5 => False), -- unused
9609 N_Access_Definition =>
9610 (1 => False, -- unused
9611 2 => False, -- unused
9612 3 => True, -- Access_To_Subprogram_Definition (Node3)
9613 4 => True, -- Subtype_Mark (Node4)
9614 5 => False), -- unused
9616 N_Incomplete_Type_Declaration =>
9617 (1 => True, -- Defining_Identifier (Node1)
9618 2 => False, -- unused
9619 3 => False, -- unused
9620 4 => True, -- Discriminant_Specifications (List4)
9621 5 => False), -- unused
9623 N_Explicit_Dereference =>
9624 (1 => False, -- unused
9625 2 => False, -- unused
9626 3 => True, -- Prefix (Node3)
9627 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
9628 5 => False), -- Etype (Node5-Sem)
9630 N_Indexed_Component =>
9631 (1 => True, -- Expressions (List1)
9632 2 => False, -- unused
9633 3 => True, -- Prefix (Node3)
9634 4 => False, -- unused
9635 5 => False), -- Etype (Node5-Sem)
9638 (1 => False, -- unused
9639 2 => False, -- unused
9640 3 => True, -- Prefix (Node3)
9641 4 => True, -- Discrete_Range (Node4)
9642 5 => False), -- Etype (Node5-Sem)
9644 N_Selected_Component =>
9645 (1 => False, -- unused
9646 2 => True, -- Selector_Name (Node2)
9647 3 => True, -- Prefix (Node3)
9648 4 => False, -- unused
9649 5 => False), -- Etype (Node5-Sem)
9651 N_Attribute_Reference =>
9652 (1 => True, -- Expressions (List1)
9653 2 => True, -- Attribute_Name (Name2)
9654 3 => True, -- Prefix (Node3)
9655 4 => False, -- Entity (Node4-Sem)
9656 5 => False), -- Etype (Node5-Sem)
9659 (1 => True, -- Expressions (List1)
9660 2 => True, -- Component_Associations (List2)
9661 3 => False, -- Aggregate_Bounds (Node3-Sem)
9662 4 => False, -- unused
9663 5 => False), -- Etype (Node5-Sem)
9665 N_Component_Association =>
9666 (1 => True, -- Choices (List1)
9667 2 => False, -- Loop_Actions (List2-Sem)
9668 3 => True, -- Expression (Node3)
9669 4 => False, -- unused
9670 5 => False), -- unused
9672 N_Extension_Aggregate =>
9673 (1 => True, -- Expressions (List1)
9674 2 => True, -- Component_Associations (List2)
9675 3 => True, -- Ancestor_Part (Node3)
9676 4 => False, -- unused
9677 5 => False), -- Etype (Node5-Sem)
9680 (1 => False, -- unused
9681 2 => False, -- unused
9682 3 => False, -- unused
9683 4 => False, -- unused
9684 5 => False), -- Etype (Node5-Sem)
9687 (1 => False, -- Actions (List1-Sem)
9688 2 => True, -- Left_Opnd (Node2)
9689 3 => True, -- Right_Opnd (Node3)
9690 4 => False, -- unused
9691 5 => False), -- Etype (Node5-Sem)
9694 (1 => False, -- Actions (List1-Sem)
9695 2 => True, -- Left_Opnd (Node2)
9696 3 => True, -- Right_Opnd (Node3)
9697 4 => False, -- unused
9698 5 => False), -- Etype (Node5-Sem)
9701 (1 => False, -- unused
9702 2 => True, -- Left_Opnd (Node2)
9703 3 => True, -- Right_Opnd (Node3)
9704 4 => False, -- unused
9705 5 => False), -- Etype (Node5-Sem)
9708 (1 => False, -- unused
9709 2 => True, -- Left_Opnd (Node2)
9710 3 => True, -- Right_Opnd (Node3)
9711 4 => False, -- unused
9712 5 => False), -- Etype (Node5-Sem)
9715 (1 => True, -- Chars (Name1)
9716 2 => True, -- Left_Opnd (Node2)
9717 3 => True, -- Right_Opnd (Node3)
9718 4 => False, -- Entity (Node4-Sem)
9719 5 => False), -- Etype (Node5-Sem)
9722 (1 => True, -- Chars (Name1)
9723 2 => True, -- Left_Opnd (Node2)
9724 3 => True, -- Right_Opnd (Node3)
9725 4 => False, -- Entity (Node4-Sem)
9726 5 => False), -- Etype (Node5-Sem)
9729 (1 => True, -- Chars (Name1)
9730 2 => True, -- Left_Opnd (Node2)
9731 3 => True, -- Right_Opnd (Node3)
9732 4 => False, -- Entity (Node4-Sem)
9733 5 => False), -- Etype (Node5-Sem)
9736 (1 => True, -- Chars (Name1)
9737 2 => True, -- Left_Opnd (Node2)
9738 3 => True, -- Right_Opnd (Node3)
9739 4 => False, -- Entity (Node4-Sem)
9740 5 => False), -- Etype (Node5-Sem)
9743 (1 => True, -- Chars (Name1)
9744 2 => True, -- Left_Opnd (Node2)
9745 3 => True, -- Right_Opnd (Node3)
9746 4 => False, -- Entity (Node4-Sem)
9747 5 => False), -- Etype (Node5-Sem)
9750 (1 => True, -- Chars (Name1)
9751 2 => True, -- Left_Opnd (Node2)
9752 3 => True, -- Right_Opnd (Node3)
9753 4 => False, -- Entity (Node4-Sem)
9754 5 => False), -- Etype (Node5-Sem)
9757 (1 => True, -- Chars (Name1)
9758 2 => True, -- Left_Opnd (Node2)
9759 3 => True, -- Right_Opnd (Node3)
9760 4 => False, -- Entity (Node4-Sem)
9761 5 => False), -- Etype (Node5-Sem)
9764 (1 => True, -- Chars (Name1)
9765 2 => True, -- Left_Opnd (Node2)
9766 3 => True, -- Right_Opnd (Node3)
9767 4 => False, -- Entity (Node4-Sem)
9768 5 => False), -- Etype (Node5-Sem)
9771 (1 => True, -- Chars (Name1)
9772 2 => True, -- Left_Opnd (Node2)
9773 3 => True, -- Right_Opnd (Node3)
9774 4 => False, -- Entity (Node4-Sem)
9775 5 => False), -- Etype (Node5-Sem)
9778 (1 => True, -- Chars (Name1)
9779 2 => True, -- Left_Opnd (Node2)
9780 3 => True, -- Right_Opnd (Node3)
9781 4 => False, -- Entity (Node4-Sem)
9782 5 => False), -- Etype (Node5-Sem)
9785 (1 => True, -- Chars (Name1)
9786 2 => True, -- Left_Opnd (Node2)
9787 3 => True, -- Right_Opnd (Node3)
9788 4 => False, -- Entity (Node4-Sem)
9789 5 => False), -- Etype (Node5-Sem)
9792 (1 => True, -- Chars (Name1)
9793 2 => True, -- Left_Opnd (Node2)
9794 3 => True, -- Right_Opnd (Node3)
9795 4 => False, -- Entity (Node4-Sem)
9796 5 => False), -- Etype (Node5-Sem)
9799 (1 => True, -- Chars (Name1)
9800 2 => True, -- Left_Opnd (Node2)
9801 3 => True, -- Right_Opnd (Node3)
9802 4 => False, -- Entity (Node4-Sem)
9803 5 => False), -- Etype (Node5-Sem)
9806 (1 => True, -- Chars (Name1)
9807 2 => True, -- Left_Opnd (Node2)
9808 3 => True, -- Right_Opnd (Node3)
9809 4 => False, -- Entity (Node4-Sem)
9810 5 => False), -- Etype (Node5-Sem)
9813 (1 => True, -- Chars (Name1)
9814 2 => True, -- Left_Opnd (Node2)
9815 3 => True, -- Right_Opnd (Node3)
9816 4 => False, -- Entity (Node4-Sem)
9817 5 => False), -- Etype (Node5-Sem)
9820 (1 => True, -- Chars (Name1)
9821 2 => True, -- Left_Opnd (Node2)
9822 3 => True, -- Right_Opnd (Node3)
9823 4 => False, -- Entity (Node4-Sem)
9824 5 => False), -- Etype (Node5-Sem)
9827 (1 => True, -- Chars (Name1)
9828 2 => True, -- Left_Opnd (Node2)
9829 3 => True, -- Right_Opnd (Node3)
9830 4 => False, -- Entity (Node4-Sem)
9831 5 => False), -- Etype (Node5-Sem)
9834 (1 => True, -- Chars (Name1)
9835 2 => False, -- unused
9836 3 => True, -- Right_Opnd (Node3)
9837 4 => False, -- Entity (Node4-Sem)
9838 5 => False), -- Etype (Node5-Sem)
9841 (1 => True, -- Chars (Name1)
9842 2 => False, -- unused
9843 3 => True, -- Right_Opnd (Node3)
9844 4 => False, -- Entity (Node4-Sem)
9845 5 => False), -- Etype (Node5-Sem)
9848 (1 => True, -- Chars (Name1)
9849 2 => False, -- unused
9850 3 => True, -- Right_Opnd (Node3)
9851 4 => False, -- Entity (Node4-Sem)
9852 5 => False), -- Etype (Node5-Sem)
9855 (1 => True, -- Chars (Name1)
9856 2 => False, -- unused
9857 3 => True, -- Right_Opnd (Node3)
9858 4 => False, -- Entity (Node4-Sem)
9859 5 => False), -- Etype (Node5-Sem)
9861 N_Type_Conversion =>
9862 (1 => False, -- unused
9863 2 => False, -- unused
9864 3 => True, -- Expression (Node3)
9865 4 => True, -- Subtype_Mark (Node4)
9866 5 => False), -- Etype (Node5-Sem)
9868 N_Qualified_Expression =>
9869 (1 => False, -- unused
9870 2 => False, -- unused
9871 3 => True, -- Expression (Node3)
9872 4 => True, -- Subtype_Mark (Node4)
9873 5 => False), -- Etype (Node5-Sem)
9876 (1 => False, -- Storage_Pool (Node1-Sem)
9877 2 => False, -- Procedure_To_Call (Node2-Sem)
9878 3 => True, -- Expression (Node3)
9879 4 => False, -- Coextensions (Elist4-Sem)
9880 5 => False), -- Etype (Node5-Sem)
9883 (1 => False, -- unused
9884 2 => False, -- unused
9885 3 => False, -- unused
9886 4 => False, -- unused
9887 5 => False), -- unused
9890 (1 => True, -- Identifier (Node1)
9891 2 => False, -- unused
9892 3 => False, -- unused
9893 4 => False, -- unused
9894 5 => False), -- unused
9896 N_Assignment_Statement =>
9897 (1 => False, -- unused
9898 2 => True, -- Name (Node2)
9899 3 => True, -- Expression (Node3)
9900 4 => False, -- unused
9901 5 => False), -- unused
9904 (1 => True, -- Condition (Node1)
9905 2 => True, -- Then_Statements (List2)
9906 3 => True, -- Elsif_Parts (List3)
9907 4 => True, -- Else_Statements (List4)
9908 5 => True), -- End_Span (Uint5)
9911 (1 => True, -- Condition (Node1)
9912 2 => True, -- Then_Statements (List2)
9913 3 => False, -- Condition_Actions (List3-Sem)
9914 4 => False, -- unused
9915 5 => False), -- unused
9918 (1 => False, -- unused
9919 2 => False, -- unused
9920 3 => True, -- Expression (Node3)
9921 4 => True, -- Alternatives (List4)
9922 5 => True), -- End_Span (Uint5)
9924 N_Case_Statement_Alternative =>
9925 (1 => False, -- unused
9926 2 => False, -- unused
9927 3 => True, -- Statements (List3)
9928 4 => True, -- Discrete_Choices (List4)
9929 5 => False), -- unused
9932 (1 => True, -- Identifier (Node1)
9933 2 => True, -- Iteration_Scheme (Node2)
9934 3 => True, -- Statements (List3)
9935 4 => True, -- End_Label (Node4)
9936 5 => False), -- unused
9938 N_Iteration_Scheme =>
9939 (1 => True, -- Condition (Node1)
9940 2 => False, -- unused
9941 3 => False, -- Condition_Actions (List3-Sem)
9942 4 => True, -- Loop_Parameter_Specification (Node4)
9943 5 => False), -- unused
9945 N_Loop_Parameter_Specification =>
9946 (1 => True, -- Defining_Identifier (Node1)
9947 2 => False, -- unused
9948 3 => False, -- unused
9949 4 => True, -- Discrete_Subtype_Definition (Node4)
9950 5 => False), -- unused
9952 N_Block_Statement =>
9953 (1 => True, -- Identifier (Node1)
9954 2 => True, -- Declarations (List2)
9955 3 => False, -- Activation_Chain_Entity (Node3-Sem)
9956 4 => True, -- Handled_Statement_Sequence (Node4)
9957 5 => False), -- unused
9960 (1 => True, -- Condition (Node1)
9961 2 => True, -- Name (Node2)
9962 3 => False, -- unused
9963 4 => False, -- unused
9964 5 => False), -- unused
9967 (1 => False, -- unused
9968 2 => True, -- Name (Node2)
9969 3 => False, -- unused
9970 4 => False, -- unused
9971 5 => False), -- unused
9973 N_Subprogram_Declaration =>
9974 (1 => True, -- Specification (Node1)
9975 2 => False, -- unused
9976 3 => False, -- Body_To_Inline (Node3-Sem)
9977 4 => False, -- Parent_Spec (Node4-Sem)
9978 5 => False), -- Corresponding_Body (Node5-Sem)
9980 N_Abstract_Subprogram_Declaration =>
9981 (1 => True, -- Specification (Node1)
9982 2 => False, -- unused
9983 3 => False, -- unused
9984 4 => False, -- unused
9985 5 => False), -- unused
9987 N_Function_Specification =>
9988 (1 => True, -- Defining_Unit_Name (Node1)
9989 2 => False, -- Elaboration_Boolean (Node2-Sem)
9990 3 => True, -- Parameter_Specifications (List3)
9991 4 => True, -- Result_Definition (Node4)
9992 5 => False), -- Generic_Parent (Node5-Sem)
9994 N_Procedure_Specification =>
9995 (1 => True, -- Defining_Unit_Name (Node1)
9996 2 => False, -- Elaboration_Boolean (Node2-Sem)
9997 3 => True, -- Parameter_Specifications (List3)
9998 4 => False, -- unused
9999 5 => False), -- Generic_Parent (Node5-Sem)
10002 (1 => True, -- Identifier (Node1)
10003 2 => True, -- Name (Node2)
10004 3 => False, -- unused
10005 4 => False, -- unused
10006 5 => False), -- unused
10008 N_Defining_Program_Unit_Name =>
10009 (1 => True, -- Defining_Identifier (Node1)
10010 2 => True, -- Name (Node2)
10011 3 => False, -- unused
10012 4 => False, -- unused
10013 5 => False), -- unused
10015 N_Operator_Symbol =>
10016 (1 => True, -- Chars (Name1)
10017 2 => False, -- unused
10018 3 => True, -- Strval (Str3)
10019 4 => False, -- Entity (Node4-Sem)
10020 5 => False), -- Etype (Node5-Sem)
10022 N_Defining_Operator_Symbol =>
10023 (1 => True, -- Chars (Name1)
10024 2 => False, -- Next_Entity (Node2-Sem)
10025 3 => False, -- Scope (Node3-Sem)
10026 4 => False, -- unused
10027 5 => False), -- Etype (Node5-Sem)
10029 N_Parameter_Specification =>
10030 (1 => True, -- Defining_Identifier (Node1)
10031 2 => True, -- Parameter_Type (Node2)
10032 3 => True, -- Expression (Node3)
10033 4 => False, -- unused
10034 5 => False), -- Default_Expression (Node5-Sem)
10036 N_Subprogram_Body =>
10037 (1 => True, -- Specification (Node1)
10038 2 => True, -- Declarations (List2)
10039 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10040 4 => True, -- Handled_Statement_Sequence (Node4)
10041 5 => False), -- Corresponding_Spec (Node5-Sem)
10043 N_Procedure_Call_Statement =>
10044 (1 => False, -- Controlling_Argument (Node1-Sem)
10045 2 => True, -- Name (Node2)
10046 3 => True, -- Parameter_Associations (List3)
10047 4 => False, -- First_Named_Actual (Node4-Sem)
10048 5 => False), -- Etype (Node5-Sem)
10051 (1 => False, -- Controlling_Argument (Node1-Sem)
10052 2 => True, -- Name (Node2)
10053 3 => True, -- Parameter_Associations (List3)
10054 4 => False, -- First_Named_Actual (Node4-Sem)
10055 5 => False), -- Etype (Node5-Sem)
10057 N_Parameter_Association =>
10058 (1 => False, -- unused
10059 2 => True, -- Selector_Name (Node2)
10060 3 => True, -- Explicit_Actual_Parameter (Node3)
10061 4 => False, -- Next_Named_Actual (Node4-Sem)
10062 5 => False), -- unused
10064 N_Return_Statement =>
10065 (1 => False, -- Storage_Pool (Node1-Sem)
10066 2 => False, -- Procedure_To_Call (Node2-Sem)
10067 3 => True, -- Expression (Node3)
10068 4 => False, -- unused
10069 5 => False), -- Return_Statement_Entity (Node5-Sem)
10071 N_Extended_Return_Statement =>
10072 (1 => False, -- Storage_Pool (Node1-Sem)
10073 2 => False, -- Procedure_To_Call (Node2-Sem)
10074 3 => True, -- Return_Object_Declarations (List3)
10075 4 => True, -- Handled_Statement_Sequence (Node4)
10076 5 => False), -- Return_Statement_Entity (Node5-Sem)
10078 N_Package_Declaration =>
10079 (1 => True, -- Specification (Node1)
10080 2 => False, -- unused
10081 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10082 4 => False, -- Parent_Spec (Node4-Sem)
10083 5 => False), -- Corresponding_Body (Node5-Sem)
10085 N_Package_Specification =>
10086 (1 => True, -- Defining_Unit_Name (Node1)
10087 2 => True, -- Visible_Declarations (List2)
10088 3 => True, -- Private_Declarations (List3)
10089 4 => True, -- End_Label (Node4)
10090 5 => False), -- Generic_Parent (Node5-Sem)
10093 (1 => True, -- Defining_Unit_Name (Node1)
10094 2 => True, -- Declarations (List2)
10095 3 => False, -- unused
10096 4 => True, -- Handled_Statement_Sequence (Node4)
10097 5 => False), -- Corresponding_Spec (Node5-Sem)
10099 N_Private_Type_Declaration =>
10100 (1 => True, -- Defining_Identifier (Node1)
10101 2 => False, -- unused
10102 3 => False, -- unused
10103 4 => True, -- Discriminant_Specifications (List4)
10104 5 => False), -- unused
10106 N_Private_Extension_Declaration =>
10107 (1 => True, -- Defining_Identifier (Node1)
10108 2 => True, -- Interface_List (List2)
10109 3 => False, -- unused
10110 4 => True, -- Discriminant_Specifications (List4)
10111 5 => True), -- Subtype_Indication (Node5)
10113 N_Use_Package_Clause =>
10114 (1 => False, -- unused
10115 2 => True, -- Names (List2)
10116 3 => False, -- Next_Use_Clause (Node3-Sem)
10117 4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
10118 5 => False), -- unused
10120 N_Use_Type_Clause =>
10121 (1 => False, -- unused
10122 2 => True, -- Subtype_Marks (List2)
10123 3 => False, -- Next_Use_Clause (Node3-Sem)
10124 4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
10125 5 => False), -- unused
10127 N_Object_Renaming_Declaration =>
10128 (1 => True, -- Defining_Identifier (Node1)
10129 2 => True, -- Name (Node2)
10130 3 => True, -- Access_Definition (Node3)
10131 4 => True, -- Subtype_Mark (Node4)
10132 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
10134 N_Exception_Renaming_Declaration =>
10135 (1 => True, -- Defining_Identifier (Node1)
10136 2 => True, -- Name (Node2)
10137 3 => False, -- unused
10138 4 => False, -- unused
10139 5 => False), -- unused
10141 N_Package_Renaming_Declaration =>
10142 (1 => True, -- Defining_Unit_Name (Node1)
10143 2 => True, -- Name (Node2)
10144 3 => False, -- unused
10145 4 => False, -- Parent_Spec (Node4-Sem)
10146 5 => False), -- unused
10148 N_Subprogram_Renaming_Declaration =>
10149 (1 => True, -- Specification (Node1)
10150 2 => True, -- Name (Node2)
10151 3 => False, -- Corresponding_Formal_Spec (Node3-Sem)
10152 4 => False, -- Parent_Spec (Node4-Sem)
10153 5 => False), -- Corresponding_Spec (Node5-Sem)
10155 N_Generic_Package_Renaming_Declaration =>
10156 (1 => True, -- Defining_Unit_Name (Node1)
10157 2 => True, -- Name (Node2)
10158 3 => False, -- unused
10159 4 => False, -- Parent_Spec (Node4-Sem)
10160 5 => False), -- unused
10162 N_Generic_Procedure_Renaming_Declaration =>
10163 (1 => True, -- Defining_Unit_Name (Node1)
10164 2 => True, -- Name (Node2)
10165 3 => False, -- unused
10166 4 => False, -- Parent_Spec (Node4-Sem)
10167 5 => False), -- unused
10169 N_Generic_Function_Renaming_Declaration =>
10170 (1 => True, -- Defining_Unit_Name (Node1)
10171 2 => True, -- Name (Node2)
10172 3 => False, -- unused
10173 4 => False, -- Parent_Spec (Node4-Sem)
10174 5 => False), -- unused
10176 N_Task_Type_Declaration =>
10177 (1 => True, -- Defining_Identifier (Node1)
10178 2 => True, -- Interface_List (List2)
10179 3 => True, -- Task_Definition (Node3)
10180 4 => True, -- Discriminant_Specifications (List4)
10181 5 => False), -- Corresponding_Body (Node5-Sem)
10183 N_Single_Task_Declaration =>
10184 (1 => True, -- Defining_Identifier (Node1)
10185 2 => True, -- Interface_List (List2)
10186 3 => True, -- Task_Definition (Node3)
10187 4 => False, -- unused
10188 5 => False), -- unused
10190 N_Task_Definition =>
10191 (1 => False, -- unused
10192 2 => True, -- Visible_Declarations (List2)
10193 3 => True, -- Private_Declarations (List3)
10194 4 => True, -- End_Label (Node4)
10195 5 => False), -- unused
10198 (1 => True, -- Defining_Identifier (Node1)
10199 2 => True, -- Declarations (List2)
10200 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10201 4 => True, -- Handled_Statement_Sequence (Node4)
10202 5 => False), -- Corresponding_Spec (Node5-Sem)
10204 N_Protected_Type_Declaration =>
10205 (1 => True, -- Defining_Identifier (Node1)
10206 2 => True, -- Interface_List (List2)
10207 3 => True, -- Protected_Definition (Node3)
10208 4 => True, -- Discriminant_Specifications (List4)
10209 5 => False), -- Corresponding_Body (Node5-Sem)
10211 N_Single_Protected_Declaration =>
10212 (1 => True, -- Defining_Identifier (Node1)
10213 2 => True, -- Interface_List (List2)
10214 3 => True, -- Protected_Definition (Node3)
10215 4 => False, -- unused
10216 5 => False), -- unused
10218 N_Protected_Definition =>
10219 (1 => False, -- unused
10220 2 => True, -- Visible_Declarations (List2)
10221 3 => True, -- Private_Declarations (List3)
10222 4 => True, -- End_Label (Node4)
10223 5 => False), -- unused
10225 N_Protected_Body =>
10226 (1 => True, -- Defining_Identifier (Node1)
10227 2 => True, -- Declarations (List2)
10228 3 => False, -- unused
10229 4 => True, -- End_Label (Node4)
10230 5 => False), -- Corresponding_Spec (Node5-Sem)
10232 N_Entry_Declaration =>
10233 (1 => True, -- Defining_Identifier (Node1)
10234 2 => False, -- unused
10235 3 => True, -- Parameter_Specifications (List3)
10236 4 => True, -- Discrete_Subtype_Definition (Node4)
10237 5 => False), -- Corresponding_Body (Node5-Sem)
10239 N_Accept_Statement =>
10240 (1 => True, -- Entry_Direct_Name (Node1)
10241 2 => True, -- Declarations (List2)
10242 3 => True, -- Parameter_Specifications (List3)
10243 4 => True, -- Handled_Statement_Sequence (Node4)
10244 5 => True), -- Entry_Index (Node5)
10247 (1 => True, -- Defining_Identifier (Node1)
10248 2 => True, -- Declarations (List2)
10249 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10250 4 => True, -- Handled_Statement_Sequence (Node4)
10251 5 => True), -- Entry_Body_Formal_Part (Node5)
10253 N_Entry_Body_Formal_Part =>
10254 (1 => True, -- Condition (Node1)
10255 2 => False, -- unused
10256 3 => True, -- Parameter_Specifications (List3)
10257 4 => True, -- Entry_Index_Specification (Node4)
10258 5 => False), -- unused
10260 N_Entry_Index_Specification =>
10261 (1 => True, -- Defining_Identifier (Node1)
10262 2 => False, -- unused
10263 3 => False, -- unused
10264 4 => True, -- Discrete_Subtype_Definition (Node4)
10265 5 => False), -- unused
10267 N_Entry_Call_Statement =>
10268 (1 => False, -- unused
10269 2 => True, -- Name (Node2)
10270 3 => True, -- Parameter_Associations (List3)
10271 4 => False, -- First_Named_Actual (Node4-Sem)
10272 5 => False), -- unused
10274 N_Requeue_Statement =>
10275 (1 => False, -- unused
10276 2 => True, -- Name (Node2)
10277 3 => False, -- unused
10278 4 => False, -- unused
10279 5 => False), -- unused
10281 N_Delay_Until_Statement =>
10282 (1 => False, -- unused
10283 2 => False, -- unused
10284 3 => True, -- Expression (Node3)
10285 4 => False, -- unused
10286 5 => False), -- unused
10288 N_Delay_Relative_Statement =>
10289 (1 => False, -- unused
10290 2 => False, -- unused
10291 3 => True, -- Expression (Node3)
10292 4 => False, -- unused
10293 5 => False), -- unused
10295 N_Selective_Accept =>
10296 (1 => True, -- Select_Alternatives (List1)
10297 2 => False, -- unused
10298 3 => False, -- unused
10299 4 => True, -- Else_Statements (List4)
10300 5 => False), -- unused
10302 N_Accept_Alternative =>
10303 (1 => True, -- Condition (Node1)
10304 2 => True, -- Accept_Statement (Node2)
10305 3 => True, -- Statements (List3)
10306 4 => True, -- Pragmas_Before (List4)
10307 5 => False), -- Accept_Handler_Records (List5-Sem)
10309 N_Delay_Alternative =>
10310 (1 => True, -- Condition (Node1)
10311 2 => True, -- Delay_Statement (Node2)
10312 3 => True, -- Statements (List3)
10313 4 => True, -- Pragmas_Before (List4)
10314 5 => False), -- unused
10316 N_Terminate_Alternative =>
10317 (1 => True, -- Condition (Node1)
10318 2 => False, -- unused
10319 3 => False, -- unused
10320 4 => True, -- Pragmas_Before (List4)
10321 5 => True), -- Pragmas_After (List5)
10323 N_Timed_Entry_Call =>
10324 (1 => True, -- Entry_Call_Alternative (Node1)
10325 2 => False, -- unused
10326 3 => False, -- unused
10327 4 => True, -- Delay_Alternative (Node4)
10328 5 => False), -- unused
10330 N_Entry_Call_Alternative =>
10331 (1 => True, -- Entry_Call_Statement (Node1)
10332 2 => False, -- unused
10333 3 => True, -- Statements (List3)
10334 4 => True, -- Pragmas_Before (List4)
10335 5 => False), -- unused
10337 N_Conditional_Entry_Call =>
10338 (1 => True, -- Entry_Call_Alternative (Node1)
10339 2 => False, -- unused
10340 3 => False, -- unused
10341 4 => True, -- Else_Statements (List4)
10342 5 => False), -- unused
10344 N_Asynchronous_Select =>
10345 (1 => True, -- Triggering_Alternative (Node1)
10346 2 => True, -- Abortable_Part (Node2)
10347 3 => False, -- unused
10348 4 => False, -- unused
10349 5 => False), -- unused
10351 N_Triggering_Alternative =>
10352 (1 => True, -- Triggering_Statement (Node1)
10353 2 => False, -- unused
10354 3 => True, -- Statements (List3)
10355 4 => True, -- Pragmas_Before (List4)
10356 5 => False), -- unused
10358 N_Abortable_Part =>
10359 (1 => False, -- unused
10360 2 => False, -- unused
10361 3 => True, -- Statements (List3)
10362 4 => False, -- unused
10363 5 => False), -- unused
10365 N_Abort_Statement =>
10366 (1 => False, -- unused
10367 2 => True, -- Names (List2)
10368 3 => False, -- unused
10369 4 => False, -- unused
10370 5 => False), -- unused
10372 N_Compilation_Unit =>
10373 (1 => True, -- Context_Items (List1)
10374 2 => True, -- Unit (Node2)
10375 3 => False, -- First_Inlined_Subprogram (Node3-Sem)
10376 4 => False, -- Library_Unit (Node4-Sem)
10377 5 => True), -- Aux_Decls_Node (Node5)
10379 N_Compilation_Unit_Aux =>
10380 (1 => True, -- Actions (List1)
10381 2 => True, -- Declarations (List2)
10382 3 => False, -- unused
10383 4 => True, -- Config_Pragmas (List4)
10384 5 => True), -- Pragmas_After (List5)
10387 (1 => False, -- unused
10388 2 => True, -- Name (Node2)
10389 3 => False, -- unused
10390 4 => False, -- Library_Unit (Node4-Sem)
10391 5 => False), -- Corresponding_Spec (Node5-Sem)
10393 N_Subprogram_Body_Stub =>
10394 (1 => True, -- Specification (Node1)
10395 2 => False, -- unused
10396 3 => False, -- unused
10397 4 => False, -- Library_Unit (Node4-Sem)
10398 5 => False), -- Corresponding_Body (Node5-Sem)
10400 N_Package_Body_Stub =>
10401 (1 => True, -- Defining_Identifier (Node1)
10402 2 => False, -- unused
10403 3 => False, -- unused
10404 4 => False, -- Library_Unit (Node4-Sem)
10405 5 => False), -- Corresponding_Body (Node5-Sem)
10407 N_Task_Body_Stub =>
10408 (1 => True, -- Defining_Identifier (Node1)
10409 2 => False, -- unused
10410 3 => False, -- unused
10411 4 => False, -- Library_Unit (Node4-Sem)
10412 5 => False), -- Corresponding_Body (Node5-Sem)
10414 N_Protected_Body_Stub =>
10415 (1 => True, -- Defining_Identifier (Node1)
10416 2 => False, -- unused
10417 3 => False, -- unused
10418 4 => False, -- Library_Unit (Node4-Sem)
10419 5 => False), -- Corresponding_Body (Node5-Sem)
10422 (1 => True, -- Proper_Body (Node1)
10423 2 => True, -- Name (Node2)
10424 3 => False, -- Corresponding_Stub (Node3-Sem)
10425 4 => False, -- unused
10426 5 => False), -- unused
10428 N_Exception_Declaration =>
10429 (1 => True, -- Defining_Identifier (Node1)
10430 2 => False, -- unused
10431 3 => False, -- Expression (Node3-Sem)
10432 4 => False, -- unused
10433 5 => False), -- unused
10435 N_Handled_Sequence_Of_Statements =>
10436 (1 => True, -- At_End_Proc (Node1)
10437 2 => False, -- First_Real_Statement (Node2-Sem)
10438 3 => True, -- Statements (List3)
10439 4 => True, -- End_Label (Node4)
10440 5 => True), -- Exception_Handlers (List5)
10442 N_Exception_Handler =>
10443 (1 => False, -- Local_Raise_Statements (Elist1)
10444 2 => True, -- Choice_Parameter (Node2)
10445 3 => True, -- Statements (List3)
10446 4 => True, -- Exception_Choices (List4)
10447 5 => False), -- Exception_Label (Node5)
10449 N_Raise_Statement =>
10450 (1 => False, -- unused
10451 2 => True, -- Name (Node2)
10452 3 => True, -- Expression (Node3)
10453 4 => False, -- unused
10454 5 => False), -- unused
10456 N_Generic_Subprogram_Declaration =>
10457 (1 => True, -- Specification (Node1)
10458 2 => True, -- Generic_Formal_Declarations (List2)
10459 3 => False, -- unused
10460 4 => False, -- Parent_Spec (Node4-Sem)
10461 5 => False), -- Corresponding_Body (Node5-Sem)
10463 N_Generic_Package_Declaration =>
10464 (1 => True, -- Specification (Node1)
10465 2 => True, -- Generic_Formal_Declarations (List2)
10466 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10467 4 => False, -- Parent_Spec (Node4-Sem)
10468 5 => False), -- Corresponding_Body (Node5-Sem)
10470 N_Package_Instantiation =>
10471 (1 => True, -- Defining_Unit_Name (Node1)
10472 2 => True, -- Name (Node2)
10473 3 => True, -- Generic_Associations (List3)
10474 4 => False, -- Parent_Spec (Node4-Sem)
10475 5 => False), -- Instance_Spec (Node5-Sem)
10477 N_Procedure_Instantiation =>
10478 (1 => True, -- Defining_Unit_Name (Node1)
10479 2 => True, -- Name (Node2)
10480 3 => True, -- Generic_Associations (List3)
10481 4 => False, -- Parent_Spec (Node4-Sem)
10482 5 => False), -- Instance_Spec (Node5-Sem)
10484 N_Function_Instantiation =>
10485 (1 => True, -- Defining_Unit_Name (Node1)
10486 2 => True, -- Name (Node2)
10487 3 => True, -- Generic_Associations (List3)
10488 4 => False, -- Parent_Spec (Node4-Sem)
10489 5 => False), -- Instance_Spec (Node5-Sem)
10491 N_Generic_Association =>
10492 (1 => True, -- Explicit_Generic_Actual_Parameter (Node1)
10493 2 => True, -- Selector_Name (Node2)
10494 3 => False, -- unused
10495 4 => False, -- unused
10496 5 => False), -- unused
10498 N_Formal_Object_Declaration =>
10499 (1 => True, -- Defining_Identifier (Node1)
10500 2 => False, -- unused
10501 3 => True, -- Access_Definition (Node3)
10502 4 => True, -- Subtype_Mark (Node4)
10503 5 => True), -- Default_Expression (Node5)
10505 N_Formal_Type_Declaration =>
10506 (1 => True, -- Defining_Identifier (Node1)
10507 2 => False, -- unused
10508 3 => True, -- Formal_Type_Definition (Node3)
10509 4 => True, -- Discriminant_Specifications (List4)
10510 5 => False), -- unused
10512 N_Formal_Private_Type_Definition =>
10513 (1 => False, -- unused
10514 2 => False, -- unused
10515 3 => False, -- unused
10516 4 => False, -- unused
10517 5 => False), -- unused
10519 N_Formal_Derived_Type_Definition =>
10520 (1 => False, -- unused
10521 2 => True, -- Interface_List (List2)
10522 3 => False, -- unused
10523 4 => True, -- Subtype_Mark (Node4)
10524 5 => False), -- unused
10526 N_Formal_Discrete_Type_Definition =>
10527 (1 => False, -- unused
10528 2 => False, -- unused
10529 3 => False, -- unused
10530 4 => False, -- unused
10531 5 => False), -- unused
10533 N_Formal_Signed_Integer_Type_Definition =>
10534 (1 => False, -- unused
10535 2 => False, -- unused
10536 3 => False, -- unused
10537 4 => False, -- unused
10538 5 => False), -- unused
10540 N_Formal_Modular_Type_Definition =>
10541 (1 => False, -- unused
10542 2 => False, -- unused
10543 3 => False, -- unused
10544 4 => False, -- unused
10545 5 => False), -- unused
10547 N_Formal_Floating_Point_Definition =>
10548 (1 => False, -- unused
10549 2 => False, -- unused
10550 3 => False, -- unused
10551 4 => False, -- unused
10552 5 => False), -- unused
10554 N_Formal_Ordinary_Fixed_Point_Definition =>
10555 (1 => False, -- unused
10556 2 => False, -- unused
10557 3 => False, -- unused
10558 4 => False, -- unused
10559 5 => False), -- unused
10561 N_Formal_Decimal_Fixed_Point_Definition =>
10562 (1 => False, -- unused
10563 2 => False, -- unused
10564 3 => False, -- unused
10565 4 => False, -- unused
10566 5 => False), -- unused
10568 N_Formal_Concrete_Subprogram_Declaration =>
10569 (1 => True, -- Specification (Node1)
10570 2 => True, -- Default_Name (Node2)
10571 3 => False, -- unused
10572 4 => False, -- unused
10573 5 => False), -- unused
10575 N_Formal_Abstract_Subprogram_Declaration =>
10576 (1 => True, -- Specification (Node1)
10577 2 => True, -- Default_Name (Node2)
10578 3 => False, -- unused
10579 4 => False, -- unused
10580 5 => False), -- unused
10582 N_Formal_Package_Declaration =>
10583 (1 => True, -- Defining_Identifier (Node1)
10584 2 => True, -- Name (Node2)
10585 3 => True, -- Generic_Associations (List3)
10586 4 => False, -- unused
10587 5 => False), -- Instance_Spec (Node5-Sem)
10589 N_Attribute_Definition_Clause =>
10590 (1 => True, -- Chars (Name1)
10591 2 => True, -- Name (Node2)
10592 3 => True, -- Expression (Node3)
10593 4 => False, -- unused
10594 5 => False), -- Next_Rep_Item (Node5-Sem)
10596 N_Enumeration_Representation_Clause =>
10597 (1 => True, -- Identifier (Node1)
10598 2 => False, -- unused
10599 3 => True, -- Array_Aggregate (Node3)
10600 4 => False, -- unused
10601 5 => False), -- Next_Rep_Item (Node5-Sem)
10603 N_Record_Representation_Clause =>
10604 (1 => True, -- Identifier (Node1)
10605 2 => True, -- Mod_Clause (Node2)
10606 3 => True, -- Component_Clauses (List3)
10607 4 => False, -- unused
10608 5 => False), -- Next_Rep_Item (Node5-Sem)
10610 N_Component_Clause =>
10611 (1 => True, -- Component_Name (Node1)
10612 2 => True, -- Position (Node2)
10613 3 => True, -- First_Bit (Node3)
10614 4 => True, -- Last_Bit (Node4)
10615 5 => False), -- unused
10617 N_Code_Statement =>
10618 (1 => False, -- unused
10619 2 => False, -- unused
10620 3 => True, -- Expression (Node3)
10621 4 => False, -- unused
10622 5 => False), -- unused
10624 N_Op_Rotate_Left =>
10625 (1 => True, -- Chars (Name1)
10626 2 => True, -- Left_Opnd (Node2)
10627 3 => True, -- Right_Opnd (Node3)
10628 4 => False, -- Entity (Node4-Sem)
10629 5 => False), -- Etype (Node5-Sem)
10631 N_Op_Rotate_Right =>
10632 (1 => True, -- Chars (Name1)
10633 2 => True, -- Left_Opnd (Node2)
10634 3 => True, -- Right_Opnd (Node3)
10635 4 => False, -- Entity (Node4-Sem)
10636 5 => False), -- Etype (Node5-Sem)
10639 (1 => True, -- Chars (Name1)
10640 2 => True, -- Left_Opnd (Node2)
10641 3 => True, -- Right_Opnd (Node3)
10642 4 => False, -- Entity (Node4-Sem)
10643 5 => False), -- Etype (Node5-Sem)
10645 N_Op_Shift_Right_Arithmetic =>
10646 (1 => True, -- Chars (Name1)
10647 2 => True, -- Left_Opnd (Node2)
10648 3 => True, -- Right_Opnd (Node3)
10649 4 => False, -- Entity (Node4-Sem)
10650 5 => False), -- Etype (Node5-Sem)
10652 N_Op_Shift_Right =>
10653 (1 => True, -- Chars (Name1)
10654 2 => True, -- Left_Opnd (Node2)
10655 3 => True, -- Right_Opnd (Node3)
10656 4 => False, -- Entity (Node4-Sem)
10657 5 => False), -- Etype (Node5-Sem)
10659 N_Delta_Constraint =>
10660 (1 => False, -- unused
10661 2 => False, -- unused
10662 3 => True, -- Delta_Expression (Node3)
10663 4 => True, -- Range_Constraint (Node4)
10664 5 => False), -- unused
10667 (1 => True, -- Identifier (Node1)
10668 2 => False, -- unused
10669 3 => True, -- Expression (Node3)
10670 4 => False, -- unused
10671 5 => False), -- unused
10674 (1 => False, -- unused
10675 2 => False, -- unused
10676 3 => True, -- Expression (Node3)
10677 4 => True, -- Pragmas_Before (List4)
10678 5 => False), -- unused
10680 N_Conditional_Expression =>
10681 (1 => True, -- Expressions (List1)
10682 2 => False, -- Then_Actions (List2-Sem)
10683 3 => False, -- Else_Actions (List3-Sem)
10684 4 => False, -- unused
10685 5 => False), -- Etype (Node5-Sem)
10688 (1 => True, -- Chars (Name1)
10689 2 => True, -- Selector_Name (Node2)
10690 3 => True, -- Prefix (Node3)
10691 4 => False, -- Entity (Node4-Sem)
10692 5 => False), -- Etype (Node5-Sem)
10694 N_Free_Statement =>
10695 (1 => False, -- Storage_Pool (Node1-Sem)
10696 2 => False, -- Procedure_To_Call (Node2-Sem)
10697 3 => True, -- Expression (Node3)
10698 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
10699 5 => False), -- unused
10702 (1 => True, -- Actions (List1)
10703 2 => False, -- Access_Types_To_Process (Elist2-Sem)
10704 3 => False, -- TSS_Elist (Elist3-Sem)
10705 4 => False, -- Entity (Node4-Sem)
10706 5 => False), -- First_Subtype_Link (Node5-Sem)
10708 N_Implicit_Label_Declaration =>
10709 (1 => True, -- Defining_Identifier (Node1)
10710 2 => False, -- Label_Construct (Node2-Sem)
10711 3 => False, -- unused
10712 4 => False, -- unused
10713 5 => False), -- unused
10715 N_Itype_Reference =>
10716 (1 => False, -- Itype (Node1-Sem)
10717 2 => False, -- unused
10718 3 => False, -- unused
10719 4 => False, -- unused
10720 5 => False), -- unused
10722 N_Raise_Constraint_Error =>
10723 (1 => True, -- Condition (Node1)
10724 2 => False, -- unused
10725 3 => True, -- Reason (Uint3)
10726 4 => False, -- unused
10727 5 => False), -- Etype (Node5-Sem)
10729 N_Raise_Program_Error =>
10730 (1 => True, -- Condition (Node1)
10731 2 => False, -- unused
10732 3 => True, -- Reason (Uint3)
10733 4 => False, -- unused
10734 5 => False), -- Etype (Node5-Sem)
10736 N_Raise_Storage_Error =>
10737 (1 => True, -- Condition (Node1)
10738 2 => False, -- unused
10739 3 => True, -- Reason (Uint3)
10740 4 => False, -- unused
10741 5 => False), -- Etype (Node5-Sem)
10743 N_Push_Constraint_Error_Label =>
10744 (1 => False, -- unused
10745 2 => False, -- unused
10746 3 => False, -- unused
10747 4 => False, -- unused
10748 5 => False), -- unused
10750 N_Push_Program_Error_Label =>
10751 (1 => False, -- Exception_Label
10752 2 => False, -- unused
10753 3 => False, -- unused
10754 4 => False, -- unused
10755 5 => False), -- Exception_Label
10757 N_Push_Storage_Error_Label =>
10758 (1 => False, -- Exception_Label
10759 2 => False, -- unused
10760 3 => False, -- unused
10761 4 => False, -- unused
10762 5 => False), -- Exception_Label
10764 N_Pop_Constraint_Error_Label =>
10765 (1 => False, -- unused
10766 2 => False, -- unused
10767 3 => False, -- unused
10768 4 => False, -- unused
10769 5 => False), -- unused
10771 N_Pop_Program_Error_Label =>
10772 (1 => False, -- unused
10773 2 => False, -- unused
10774 3 => False, -- unused
10775 4 => False, -- unused
10776 5 => False), -- unused
10778 N_Pop_Storage_Error_Label =>
10779 (1 => False, -- unused
10780 2 => False, -- unused
10781 3 => False, -- unused
10782 4 => False, -- unused
10783 5 => False), -- unused
10786 (1 => False, -- unused
10787 2 => False, -- unused
10788 3 => True, -- Prefix (Node3)
10789 4 => False, -- unused
10790 5 => False), -- Etype (Node5-Sem)
10792 N_Subprogram_Info =>
10793 (1 => True, -- Identifier (Node1)
10794 2 => False, -- unused
10795 3 => False, -- unused
10796 4 => False, -- unused
10797 5 => False), -- Etype (Node5-Sem)
10799 N_Unchecked_Expression =>
10800 (1 => False, -- unused
10801 2 => False, -- unused
10802 3 => True, -- Expression (Node3)
10803 4 => False, -- unused
10804 5 => False), -- Etype (Node5-Sem)
10806 N_Unchecked_Type_Conversion =>
10807 (1 => False, -- unused
10808 2 => False, -- unused
10809 3 => True, -- Expression (Node3)
10810 4 => True, -- Subtype_Mark (Node4)
10811 5 => False), -- Etype (Node5-Sem)
10813 N_Validate_Unchecked_Conversion =>
10814 (1 => False, -- Source_Type (Node1-Sem)
10815 2 => False, -- Target_Type (Node2-Sem)
10816 3 => False, -- unused
10817 4 => False, -- unused
10818 5 => False), -- unused
10820 -- End of inserted output from makeisf program
10822 -- Entries for Empty, Error and Unused. Even thought these have a Chars
10823 -- field for debugging purposes, they are not really syntactic fields, so
10824 -- we mark all fields as unused.
10827 (1 => False, -- unused
10828 2 => False, -- unused
10829 3 => False, -- unused
10830 4 => False, -- unused
10831 5 => False), -- unused
10834 (1 => False, -- unused
10835 2 => False, -- unused
10836 3 => False, -- unused
10837 4 => False, -- unused
10838 5 => False), -- unused
10840 N_Unused_At_Start =>
10841 (1 => False, -- unused
10842 2 => False, -- unused
10843 3 => False, -- unused
10844 4 => False, -- unused
10845 5 => False), -- unused
10848 (1 => False, -- unused
10849 2 => False, -- unused
10850 3 => False, -- unused
10851 4 => False, -- unused
10852 5 => False)); -- unused
10854 --------------------
10855 -- Inline Pragmas --
10856 --------------------
10858 pragma Inline (ABE_Is_Certain);
10859 pragma Inline (Abort_Present);
10860 pragma Inline (Abortable_Part);
10861 pragma Inline (Abstract_Present);
10862 pragma Inline (Accept_Handler_Records);
10863 pragma Inline (Accept_Statement);
10864 pragma Inline (Access_Definition);
10865 pragma Inline (Access_To_Subprogram_Definition);
10866 pragma Inline (Access_Types_To_Process);
10867 pragma Inline (Actions);
10868 pragma Inline (Activation_Chain_Entity);
10869 pragma Inline (Acts_As_Spec);
10870 pragma Inline (Actual_Designated_Subtype);
10871 pragma Inline (Address_Warning_Posted);
10872 pragma Inline (Aggregate_Bounds);
10873 pragma Inline (Aliased_Present);
10874 pragma Inline (All_Others);
10875 pragma Inline (All_Present);
10876 pragma Inline (Alternatives);
10877 pragma Inline (Ancestor_Part);
10878 pragma Inline (Array_Aggregate);
10879 pragma Inline (Assignment_OK);
10880 pragma Inline (Associated_Node);
10881 pragma Inline (At_End_Proc);
10882 pragma Inline (Attribute_Name);
10883 pragma Inline (Aux_Decls_Node);
10884 pragma Inline (Backwards_OK);
10885 pragma Inline (Bad_Is_Detected);
10886 pragma Inline (Body_To_Inline);
10887 pragma Inline (Body_Required);
10888 pragma Inline (By_Ref);
10889 pragma Inline (Box_Present);
10890 pragma Inline (Char_Literal_Value);
10891 pragma Inline (Chars);
10892 pragma Inline (Check_Address_Alignment);
10893 pragma Inline (Choice_Parameter);
10894 pragma Inline (Choices);
10895 pragma Inline (Coextensions);
10896 pragma Inline (Comes_From_Extended_Return_Statement);
10897 pragma Inline (Compile_Time_Known_Aggregate);
10898 pragma Inline (Component_Associations);
10899 pragma Inline (Component_Clauses);
10900 pragma Inline (Component_Definition);
10901 pragma Inline (Component_Items);
10902 pragma Inline (Component_List);
10903 pragma Inline (Component_Name);
10904 pragma Inline (Condition);
10905 pragma Inline (Condition_Actions);
10906 pragma Inline (Config_Pragmas);
10907 pragma Inline (Constant_Present);
10908 pragma Inline (Constraint);
10909 pragma Inline (Constraints);
10910 pragma Inline (Context_Installed);
10911 pragma Inline (Context_Items);
10912 pragma Inline (Controlling_Argument);
10913 pragma Inline (Conversion_OK);
10914 pragma Inline (Corresponding_Body);
10915 pragma Inline (Corresponding_Formal_Spec);
10916 pragma Inline (Corresponding_Generic_Association);
10917 pragma Inline (Corresponding_Integer_Value);
10918 pragma Inline (Corresponding_Spec);
10919 pragma Inline (Corresponding_Stub);
10920 pragma Inline (Dcheck_Function);
10921 pragma Inline (Debug_Statement);
10922 pragma Inline (Declarations);
10923 pragma Inline (Default_Expression);
10924 pragma Inline (Default_Name);
10925 pragma Inline (Defining_Identifier);
10926 pragma Inline (Defining_Unit_Name);
10927 pragma Inline (Delay_Alternative);
10928 pragma Inline (Delay_Statement);
10929 pragma Inline (Delta_Expression);
10930 pragma Inline (Digits_Expression);
10931 pragma Inline (Discr_Check_Funcs_Built);
10932 pragma Inline (Discrete_Choices);
10933 pragma Inline (Discrete_Range);
10934 pragma Inline (Discrete_Subtype_Definition);
10935 pragma Inline (Discrete_Subtype_Definitions);
10936 pragma Inline (Discriminant_Specifications);
10937 pragma Inline (Discriminant_Type);
10938 pragma Inline (Do_Accessibility_Check);
10939 pragma Inline (Do_Discriminant_Check);
10940 pragma Inline (Do_Length_Check);
10941 pragma Inline (Do_Division_Check);
10942 pragma Inline (Do_Overflow_Check);
10943 pragma Inline (Do_Range_Check);
10944 pragma Inline (Do_Storage_Check);
10945 pragma Inline (Do_Tag_Check);
10946 pragma Inline (Elaborate_Present);
10947 pragma Inline (Elaborate_All_Desirable);
10948 pragma Inline (Elaborate_All_Present);
10949 pragma Inline (Elaborate_Desirable);
10950 pragma Inline (Elaboration_Boolean);
10951 pragma Inline (Else_Actions);
10952 pragma Inline (Else_Statements);
10953 pragma Inline (Elsif_Parts);
10954 pragma Inline (Enclosing_Variant);
10955 pragma Inline (End_Label);
10956 pragma Inline (End_Span);
10957 pragma Inline (Entity);
10958 pragma Inline (Entity_Or_Associated_Node);
10959 pragma Inline (Entry_Body_Formal_Part);
10960 pragma Inline (Entry_Call_Alternative);
10961 pragma Inline (Entry_Call_Statement);
10962 pragma Inline (Entry_Direct_Name);
10963 pragma Inline (Entry_Index);
10964 pragma Inline (Entry_Index_Specification);
10965 pragma Inline (Etype);
10966 pragma Inline (Exception_Choices);
10967 pragma Inline (Exception_Handlers);
10968 pragma Inline (Exception_Junk);
10969 pragma Inline (Exception_Label);
10970 pragma Inline (Expansion_Delayed);
10971 pragma Inline (Explicit_Actual_Parameter);
10972 pragma Inline (Explicit_Generic_Actual_Parameter);
10973 pragma Inline (Expression);
10974 pragma Inline (Expressions);
10975 pragma Inline (First_Bit);
10976 pragma Inline (First_Inlined_Subprogram);
10977 pragma Inline (First_Name);
10978 pragma Inline (First_Named_Actual);
10979 pragma Inline (First_Real_Statement);
10980 pragma Inline (First_Subtype_Link);
10981 pragma Inline (Float_Truncate);
10982 pragma Inline (Formal_Type_Definition);
10983 pragma Inline (Forwards_OK);
10984 pragma Inline (From_At_End);
10985 pragma Inline (From_At_Mod);
10986 pragma Inline (From_Default);
10987 pragma Inline (Generic_Associations);
10988 pragma Inline (Generic_Formal_Declarations);
10989 pragma Inline (Generic_Parent);
10990 pragma Inline (Generic_Parent_Type);
10991 pragma Inline (Handled_Statement_Sequence);
10992 pragma Inline (Handler_List_Entry);
10993 pragma Inline (Has_Created_Identifier);
10994 pragma Inline (Has_Dynamic_Length_Check);
10995 pragma Inline (Has_Dynamic_Range_Check);
10996 pragma Inline (Has_Init_Expression);
10997 pragma Inline (Has_Local_Raise);
10998 pragma Inline (Has_Self_Reference);
10999 pragma Inline (Has_No_Elaboration_Code);
11000 pragma Inline (Has_Priority_Pragma);
11001 pragma Inline (Has_Private_View);
11002 pragma Inline (Has_Relative_Deadline_Pragma);
11003 pragma Inline (Has_Storage_Size_Pragma);
11004 pragma Inline (Has_Task_Info_Pragma);
11005 pragma Inline (Has_Task_Name_Pragma);
11006 pragma Inline (Has_Wide_Character);
11007 pragma Inline (Hidden_By_Use_Clause);
11008 pragma Inline (High_Bound);
11009 pragma Inline (Identifier);
11010 pragma Inline (Implicit_With);
11011 pragma Inline (Interface_List);
11012 pragma Inline (Interface_Present);
11013 pragma Inline (Includes_Infinities);
11014 pragma Inline (In_Present);
11015 pragma Inline (Instance_Spec);
11016 pragma Inline (Intval);
11017 pragma Inline (Is_Asynchronous_Call_Block);
11018 pragma Inline (Is_Component_Left_Opnd);
11019 pragma Inline (Is_Component_Right_Opnd);
11020 pragma Inline (Is_Controlling_Actual);
11021 pragma Inline (Is_Dynamic_Coextension);
11022 pragma Inline (Is_Entry_Barrier_Function);
11023 pragma Inline (Is_Expanded_Build_In_Place_Call);
11024 pragma Inline (Is_Folded_In_Parser);
11025 pragma Inline (Is_In_Discriminant_Check);
11026 pragma Inline (Is_Machine_Number);
11027 pragma Inline (Is_Null_Loop);
11028 pragma Inline (Is_Overloaded);
11029 pragma Inline (Is_Power_Of_2_For_Shift);
11030 pragma Inline (Is_Protected_Subprogram_Body);
11031 pragma Inline (Is_Static_Coextension);
11032 pragma Inline (Is_Static_Expression);
11033 pragma Inline (Is_Subprogram_Descriptor);
11034 pragma Inline (Is_Task_Allocation_Block);
11035 pragma Inline (Is_Task_Master);
11036 pragma Inline (Iteration_Scheme);
11037 pragma Inline (Itype);
11038 pragma Inline (Kill_Range_Check);
11039 pragma Inline (Last_Bit);
11040 pragma Inline (Last_Name);
11041 pragma Inline (Library_Unit);
11042 pragma Inline (Label_Construct);
11043 pragma Inline (Left_Opnd);
11044 pragma Inline (Limited_View_Installed);
11045 pragma Inline (Limited_Present);
11046 pragma Inline (Literals);
11047 pragma Inline (Local_Raise_Not_OK);
11048 pragma Inline (Local_Raise_Statements);
11049 pragma Inline (Loop_Actions);
11050 pragma Inline (Loop_Parameter_Specification);
11051 pragma Inline (Low_Bound);
11052 pragma Inline (Mod_Clause);
11053 pragma Inline (More_Ids);
11054 pragma Inline (Must_Be_Byte_Aligned);
11055 pragma Inline (Must_Not_Freeze);
11056 pragma Inline (Must_Not_Override);
11057 pragma Inline (Must_Override);
11058 pragma Inline (Name);
11059 pragma Inline (Names);
11060 pragma Inline (Next_Entity);
11061 pragma Inline (Next_Named_Actual);
11062 pragma Inline (Next_Pragma);
11063 pragma Inline (Next_Rep_Item);
11064 pragma Inline (Next_Use_Clause);
11065 pragma Inline (No_Ctrl_Actions);
11066 pragma Inline (No_Elaboration_Check);
11067 pragma Inline (No_Entities_Ref_In_Spec);
11068 pragma Inline (No_Initialization);
11069 pragma Inline (No_Truncation);
11070 pragma Inline (Null_Present);
11071 pragma Inline (Null_Exclusion_Present);
11072 pragma Inline (Null_Exclusion_In_Return_Present);
11073 pragma Inline (Null_Record_Present);
11074 pragma Inline (Object_Definition);
11075 pragma Inline (Original_Discriminant);
11076 pragma Inline (Original_Entity);
11077 pragma Inline (Others_Discrete_Choices);
11078 pragma Inline (Out_Present);
11079 pragma Inline (Parameter_Associations);
11080 pragma Inline (Parameter_Specifications);
11081 pragma Inline (Parameter_List_Truncated);
11082 pragma Inline (Parameter_Type);
11083 pragma Inline (Parent_Spec);
11084 pragma Inline (PPC_Enabled);
11085 pragma Inline (Position);
11086 pragma Inline (Pragma_Argument_Associations);
11087 pragma Inline (Pragma_Identifier);
11088 pragma Inline (Pragmas_After);
11089 pragma Inline (Pragmas_Before);
11090 pragma Inline (Prefix);
11091 pragma Inline (Present_Expr);
11092 pragma Inline (Prev_Ids);
11093 pragma Inline (Print_In_Hex);
11094 pragma Inline (Private_Declarations);
11095 pragma Inline (Private_Present);
11096 pragma Inline (Procedure_To_Call);
11097 pragma Inline (Proper_Body);
11098 pragma Inline (Protected_Definition);
11099 pragma Inline (Protected_Present);
11100 pragma Inline (Raises_Constraint_Error);
11101 pragma Inline (Range_Constraint);
11102 pragma Inline (Range_Expression);
11103 pragma Inline (Real_Range_Specification);
11104 pragma Inline (Realval);
11105 pragma Inline (Reason);
11106 pragma Inline (Record_Extension_Part);
11107 pragma Inline (Redundant_Use);
11108 pragma Inline (Renaming_Exception);
11109 pragma Inline (Result_Definition);
11110 pragma Inline (Return_Object_Declarations);
11111 pragma Inline (Return_Statement_Entity);
11112 pragma Inline (Reverse_Present);
11113 pragma Inline (Right_Opnd);
11114 pragma Inline (Rounded_Result);
11115 pragma Inline (Scope);
11116 pragma Inline (Select_Alternatives);
11117 pragma Inline (Selector_Name);
11118 pragma Inline (Selector_Names);
11119 pragma Inline (Shift_Count_OK);
11120 pragma Inline (Source_Type);
11121 pragma Inline (Specification);
11122 pragma Inline (Statements);
11123 pragma Inline (Static_Processing_OK);
11124 pragma Inline (Storage_Pool);
11125 pragma Inline (Strval);
11126 pragma Inline (Subtype_Indication);
11127 pragma Inline (Subtype_Mark);
11128 pragma Inline (Subtype_Marks);
11129 pragma Inline (Suppress_Loop_Warnings);
11130 pragma Inline (Synchronized_Present);
11131 pragma Inline (Tagged_Present);
11132 pragma Inline (Target_Type);
11133 pragma Inline (Task_Definition);
11134 pragma Inline (Task_Present);
11135 pragma Inline (Then_Actions);
11136 pragma Inline (Then_Statements);
11137 pragma Inline (Triggering_Alternative);
11138 pragma Inline (Triggering_Statement);
11139 pragma Inline (Treat_Fixed_As_Integer);
11140 pragma Inline (TSS_Elist);
11141 pragma Inline (Type_Definition);
11142 pragma Inline (Unit);
11143 pragma Inline (Unknown_Discriminants_Present);
11144 pragma Inline (Unreferenced_In_Spec);
11145 pragma Inline (Variant_Part);
11146 pragma Inline (Variants);
11147 pragma Inline (Visible_Declarations);
11148 pragma Inline (Was_Originally_Stub);
11149 pragma Inline (Zero_Cost_Handling);
11151 pragma Inline (Set_ABE_Is_Certain);
11152 pragma Inline (Set_Abort_Present);
11153 pragma Inline (Set_Abortable_Part);
11154 pragma Inline (Set_Abstract_Present);
11155 pragma Inline (Set_Accept_Handler_Records);
11156 pragma Inline (Set_Accept_Statement);
11157 pragma Inline (Set_Access_Definition);
11158 pragma Inline (Set_Access_To_Subprogram_Definition);
11159 pragma Inline (Set_Access_Types_To_Process);
11160 pragma Inline (Set_Actions);
11161 pragma Inline (Set_Activation_Chain_Entity);
11162 pragma Inline (Set_Acts_As_Spec);
11163 pragma Inline (Set_Actual_Designated_Subtype);
11164 pragma Inline (Set_Address_Warning_Posted);
11165 pragma Inline (Set_Aggregate_Bounds);
11166 pragma Inline (Set_Aliased_Present);
11167 pragma Inline (Set_All_Others);
11168 pragma Inline (Set_All_Present);
11169 pragma Inline (Set_Alternatives);
11170 pragma Inline (Set_Ancestor_Part);
11171 pragma Inline (Set_Array_Aggregate);
11172 pragma Inline (Set_Assignment_OK);
11173 pragma Inline (Set_Associated_Node);
11174 pragma Inline (Set_At_End_Proc);
11175 pragma Inline (Set_Attribute_Name);
11176 pragma Inline (Set_Aux_Decls_Node);
11177 pragma Inline (Set_Backwards_OK);
11178 pragma Inline (Set_Bad_Is_Detected);
11179 pragma Inline (Set_Body_To_Inline);
11180 pragma Inline (Set_Body_Required);
11181 pragma Inline (Set_By_Ref);
11182 pragma Inline (Set_Box_Present);
11183 pragma Inline (Set_Char_Literal_Value);
11184 pragma Inline (Set_Chars);
11185 pragma Inline (Set_Check_Address_Alignment);
11186 pragma Inline (Set_Choice_Parameter);
11187 pragma Inline (Set_Choices);
11188 pragma Inline (Set_Coextensions);
11189 pragma Inline (Set_Comes_From_Extended_Return_Statement);
11190 pragma Inline (Set_Compile_Time_Known_Aggregate);
11191 pragma Inline (Set_Component_Associations);
11192 pragma Inline (Set_Component_Clauses);
11193 pragma Inline (Set_Component_Definition);
11194 pragma Inline (Set_Component_Items);
11195 pragma Inline (Set_Component_List);
11196 pragma Inline (Set_Component_Name);
11197 pragma Inline (Set_Condition);
11198 pragma Inline (Set_Condition_Actions);
11199 pragma Inline (Set_Config_Pragmas);
11200 pragma Inline (Set_Constant_Present);
11201 pragma Inline (Set_Constraint);
11202 pragma Inline (Set_Constraints);
11203 pragma Inline (Set_Context_Installed);
11204 pragma Inline (Set_Context_Items);
11205 pragma Inline (Set_Controlling_Argument);
11206 pragma Inline (Set_Conversion_OK);
11207 pragma Inline (Set_Corresponding_Body);
11208 pragma Inline (Set_Corresponding_Formal_Spec);
11209 pragma Inline (Set_Corresponding_Generic_Association);
11210 pragma Inline (Set_Corresponding_Integer_Value);
11211 pragma Inline (Set_Corresponding_Spec);
11212 pragma Inline (Set_Corresponding_Stub);
11213 pragma Inline (Set_Dcheck_Function);
11214 pragma Inline (Set_Debug_Statement);
11215 pragma Inline (Set_Declarations);
11216 pragma Inline (Set_Default_Expression);
11217 pragma Inline (Set_Default_Name);
11218 pragma Inline (Set_Defining_Identifier);
11219 pragma Inline (Set_Defining_Unit_Name);
11220 pragma Inline (Set_Delay_Alternative);
11221 pragma Inline (Set_Delay_Statement);
11222 pragma Inline (Set_Delta_Expression);
11223 pragma Inline (Set_Digits_Expression);
11224 pragma Inline (Set_Discr_Check_Funcs_Built);
11225 pragma Inline (Set_Discrete_Choices);
11226 pragma Inline (Set_Discrete_Range);
11227 pragma Inline (Set_Discrete_Subtype_Definition);
11228 pragma Inline (Set_Discrete_Subtype_Definitions);
11229 pragma Inline (Set_Discriminant_Specifications);
11230 pragma Inline (Set_Discriminant_Type);
11231 pragma Inline (Set_Do_Accessibility_Check);
11232 pragma Inline (Set_Do_Discriminant_Check);
11233 pragma Inline (Set_Do_Length_Check);
11234 pragma Inline (Set_Do_Division_Check);
11235 pragma Inline (Set_Do_Overflow_Check);
11236 pragma Inline (Set_Do_Range_Check);
11237 pragma Inline (Set_Do_Storage_Check);
11238 pragma Inline (Set_Do_Tag_Check);
11239 pragma Inline (Set_Elaborate_Present);
11240 pragma Inline (Set_Elaborate_All_Desirable);
11241 pragma Inline (Set_Elaborate_All_Present);
11242 pragma Inline (Set_Elaborate_Desirable);
11243 pragma Inline (Set_Elaboration_Boolean);
11244 pragma Inline (Set_Else_Actions);
11245 pragma Inline (Set_Else_Statements);
11246 pragma Inline (Set_Elsif_Parts);
11247 pragma Inline (Set_Enclosing_Variant);
11248 pragma Inline (Set_End_Label);
11249 pragma Inline (Set_End_Span);
11250 pragma Inline (Set_Entity);
11251 pragma Inline (Set_Entry_Body_Formal_Part);
11252 pragma Inline (Set_Entry_Call_Alternative);
11253 pragma Inline (Set_Entry_Call_Statement);
11254 pragma Inline (Set_Entry_Direct_Name);
11255 pragma Inline (Set_Entry_Index);
11256 pragma Inline (Set_Entry_Index_Specification);
11257 pragma Inline (Set_Etype);
11258 pragma Inline (Set_Exception_Choices);
11259 pragma Inline (Set_Exception_Handlers);
11260 pragma Inline (Set_Exception_Junk);
11261 pragma Inline (Set_Exception_Label);
11262 pragma Inline (Set_Expansion_Delayed);
11263 pragma Inline (Set_Explicit_Actual_Parameter);
11264 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
11265 pragma Inline (Set_Expression);
11266 pragma Inline (Set_Expressions);
11267 pragma Inline (Set_First_Bit);
11268 pragma Inline (Set_First_Inlined_Subprogram);
11269 pragma Inline (Set_First_Name);
11270 pragma Inline (Set_First_Named_Actual);
11271 pragma Inline (Set_First_Real_Statement);
11272 pragma Inline (Set_First_Subtype_Link);
11273 pragma Inline (Set_Float_Truncate);
11274 pragma Inline (Set_Formal_Type_Definition);
11275 pragma Inline (Set_Forwards_OK);
11276 pragma Inline (Set_From_At_End);
11277 pragma Inline (Set_From_At_Mod);
11278 pragma Inline (Set_From_Default);
11279 pragma Inline (Set_Generic_Associations);
11280 pragma Inline (Set_Generic_Formal_Declarations);
11281 pragma Inline (Set_Generic_Parent);
11282 pragma Inline (Set_Generic_Parent_Type);
11283 pragma Inline (Set_Handled_Statement_Sequence);
11284 pragma Inline (Set_Handler_List_Entry);
11285 pragma Inline (Set_Has_Created_Identifier);
11286 pragma Inline (Set_Has_Dynamic_Length_Check);
11287 pragma Inline (Set_Has_Init_Expression);
11288 pragma Inline (Set_Has_Local_Raise);
11289 pragma Inline (Set_Has_Dynamic_Range_Check);
11290 pragma Inline (Set_Has_No_Elaboration_Code);
11291 pragma Inline (Set_Has_Priority_Pragma);
11292 pragma Inline (Set_Has_Private_View);
11293 pragma Inline (Set_Has_Relative_Deadline_Pragma);
11294 pragma Inline (Set_Has_Storage_Size_Pragma);
11295 pragma Inline (Set_Has_Task_Info_Pragma);
11296 pragma Inline (Set_Has_Task_Name_Pragma);
11297 pragma Inline (Set_Has_Wide_Character);
11298 pragma Inline (Set_Hidden_By_Use_Clause);
11299 pragma Inline (Set_High_Bound);
11300 pragma Inline (Set_Identifier);
11301 pragma Inline (Set_Implicit_With);
11302 pragma Inline (Set_Includes_Infinities);
11303 pragma Inline (Set_Interface_List);
11304 pragma Inline (Set_Interface_Present);
11305 pragma Inline (Set_In_Present);
11306 pragma Inline (Set_Instance_Spec);
11307 pragma Inline (Set_Intval);
11308 pragma Inline (Set_Is_Asynchronous_Call_Block);
11309 pragma Inline (Set_Is_Component_Left_Opnd);
11310 pragma Inline (Set_Is_Component_Right_Opnd);
11311 pragma Inline (Set_Is_Controlling_Actual);
11312 pragma Inline (Set_Is_Dynamic_Coextension);
11313 pragma Inline (Set_Is_Entry_Barrier_Function);
11314 pragma Inline (Set_Is_Expanded_Build_In_Place_Call);
11315 pragma Inline (Set_Is_Folded_In_Parser);
11316 pragma Inline (Set_Is_In_Discriminant_Check);
11317 pragma Inline (Set_Is_Machine_Number);
11318 pragma Inline (Set_Is_Null_Loop);
11319 pragma Inline (Set_Is_Overloaded);
11320 pragma Inline (Set_Is_Power_Of_2_For_Shift);
11321 pragma Inline (Set_Is_Protected_Subprogram_Body);
11322 pragma Inline (Set_Has_Self_Reference);
11323 pragma Inline (Set_Is_Static_Coextension);
11324 pragma Inline (Set_Is_Static_Expression);
11325 pragma Inline (Set_Is_Subprogram_Descriptor);
11326 pragma Inline (Set_Is_Task_Allocation_Block);
11327 pragma Inline (Set_Is_Task_Master);
11328 pragma Inline (Set_Iteration_Scheme);
11329 pragma Inline (Set_Itype);
11330 pragma Inline (Set_Kill_Range_Check);
11331 pragma Inline (Set_Last_Bit);
11332 pragma Inline (Set_Last_Name);
11333 pragma Inline (Set_Library_Unit);
11334 pragma Inline (Set_Label_Construct);
11335 pragma Inline (Set_Left_Opnd);
11336 pragma Inline (Set_Limited_View_Installed);
11337 pragma Inline (Set_Limited_Present);
11338 pragma Inline (Set_Literals);
11339 pragma Inline (Set_Local_Raise_Not_OK);
11340 pragma Inline (Set_Local_Raise_Statements);
11341 pragma Inline (Set_Loop_Actions);
11342 pragma Inline (Set_Loop_Parameter_Specification);
11343 pragma Inline (Set_Low_Bound);
11344 pragma Inline (Set_Mod_Clause);
11345 pragma Inline (Set_More_Ids);
11346 pragma Inline (Set_Must_Be_Byte_Aligned);
11347 pragma Inline (Set_Must_Not_Freeze);
11348 pragma Inline (Set_Must_Not_Override);
11349 pragma Inline (Set_Must_Override);
11350 pragma Inline (Set_Name);
11351 pragma Inline (Set_Names);
11352 pragma Inline (Set_Next_Entity);
11353 pragma Inline (Set_Next_Named_Actual);
11354 pragma Inline (Set_Next_Pragma);
11355 pragma Inline (Set_Next_Rep_Item);
11356 pragma Inline (Set_Next_Use_Clause);
11357 pragma Inline (Set_No_Ctrl_Actions);
11358 pragma Inline (Set_No_Elaboration_Check);
11359 pragma Inline (Set_No_Entities_Ref_In_Spec);
11360 pragma Inline (Set_No_Initialization);
11361 pragma Inline (Set_No_Truncation);
11362 pragma Inline (Set_Null_Present);
11363 pragma Inline (Set_Null_Exclusion_Present);
11364 pragma Inline (Set_Null_Exclusion_In_Return_Present);
11365 pragma Inline (Set_Null_Record_Present);
11366 pragma Inline (Set_Object_Definition);
11367 pragma Inline (Set_Original_Discriminant);
11368 pragma Inline (Set_Original_Entity);
11369 pragma Inline (Set_Others_Discrete_Choices);
11370 pragma Inline (Set_Out_Present);
11371 pragma Inline (Set_Parameter_Associations);
11372 pragma Inline (Set_Parameter_Specifications);
11373 pragma Inline (Set_Parameter_List_Truncated);
11374 pragma Inline (Set_Parameter_Type);
11375 pragma Inline (Set_Parent_Spec);
11376 pragma Inline (Set_PPC_Enabled);
11377 pragma Inline (Set_Position);
11378 pragma Inline (Set_Pragma_Argument_Associations);
11379 pragma Inline (Set_Pragma_Identifier);
11380 pragma Inline (Set_Pragmas_After);
11381 pragma Inline (Set_Pragmas_Before);
11382 pragma Inline (Set_Prefix);
11383 pragma Inline (Set_Present_Expr);
11384 pragma Inline (Set_Prev_Ids);
11385 pragma Inline (Set_Print_In_Hex);
11386 pragma Inline (Set_Private_Declarations);
11387 pragma Inline (Set_Private_Present);
11388 pragma Inline (Set_Procedure_To_Call);
11389 pragma Inline (Set_Proper_Body);
11390 pragma Inline (Set_Protected_Definition);
11391 pragma Inline (Set_Protected_Present);
11392 pragma Inline (Set_Raises_Constraint_Error);
11393 pragma Inline (Set_Range_Constraint);
11394 pragma Inline (Set_Range_Expression);
11395 pragma Inline (Set_Real_Range_Specification);
11396 pragma Inline (Set_Realval);
11397 pragma Inline (Set_Reason);
11398 pragma Inline (Set_Record_Extension_Part);
11399 pragma Inline (Set_Redundant_Use);
11400 pragma Inline (Set_Renaming_Exception);
11401 pragma Inline (Set_Result_Definition);
11402 pragma Inline (Set_Return_Object_Declarations);
11403 pragma Inline (Set_Reverse_Present);
11404 pragma Inline (Set_Right_Opnd);
11405 pragma Inline (Set_Rounded_Result);
11406 pragma Inline (Set_Scope);
11407 pragma Inline (Set_Select_Alternatives);
11408 pragma Inline (Set_Selector_Name);
11409 pragma Inline (Set_Selector_Names);
11410 pragma Inline (Set_Shift_Count_OK);
11411 pragma Inline (Set_Source_Type);
11412 pragma Inline (Set_Specification);
11413 pragma Inline (Set_Statements);
11414 pragma Inline (Set_Static_Processing_OK);
11415 pragma Inline (Set_Storage_Pool);
11416 pragma Inline (Set_Strval);
11417 pragma Inline (Set_Subtype_Indication);
11418 pragma Inline (Set_Subtype_Mark);
11419 pragma Inline (Set_Subtype_Marks);
11420 pragma Inline (Set_Suppress_Loop_Warnings);
11421 pragma Inline (Set_Synchronized_Present);
11422 pragma Inline (Set_Tagged_Present);
11423 pragma Inline (Set_Target_Type);
11424 pragma Inline (Set_Task_Definition);
11425 pragma Inline (Set_Task_Present);
11426 pragma Inline (Set_Then_Actions);
11427 pragma Inline (Set_Then_Statements);
11428 pragma Inline (Set_Triggering_Alternative);
11429 pragma Inline (Set_Triggering_Statement);
11430 pragma Inline (Set_Treat_Fixed_As_Integer);
11431 pragma Inline (Set_TSS_Elist);
11432 pragma Inline (Set_Type_Definition);
11433 pragma Inline (Set_Unit);
11434 pragma Inline (Set_Unknown_Discriminants_Present);
11435 pragma Inline (Set_Unreferenced_In_Spec);
11436 pragma Inline (Set_Variant_Part);
11437 pragma Inline (Set_Variants);
11438 pragma Inline (Set_Visible_Declarations);
11439 pragma Inline (Set_Was_Originally_Stub);
11440 pragma Inline (Set_Zero_Cost_Handling);
11442 N_Simple_Return_Statement : constant Node_Kind := N_Return_Statement;
11443 -- Rename N_Return_Statement to be N_Simple_Return_Statement. Clients
11444 -- should refer to N_Simple_Return_Statement.