1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2004, 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 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This package defines the structure of the abstract syntax tree. The Tree
35 -- package provides a basic tree structure. Sinfo describes how this
36 -- structure is used to represent the syntax of an Ada program.
38 -- Note: the grammar used here is taken from Version 5.95 of the RM, dated
39 -- November 1994. The grammar in the RM is followed very closely in the tree
40 -- design, and is repeated as part of this source file.
42 -- The tree contains not only the full syntactic representation of the
43 -- program, but also the results of semantic analysis. In particular, the
44 -- nodes for defining identifiers, defining character literals and defining
45 -- operator symbols, collectively referred to as entities, represent what
46 -- would normally be regarded as the symbol table information. In addition
47 -- a number of the tree nodes contain semantic information.
49 -- WARNING: There is a C version of this package. Any changes to this
50 -- source file must be properly reflected in this C header file sinfo.h
51 -- which is created automatically from sinfo.ads using xsinfo.spt.
53 with Types; use Types;
54 with Uintp; use Uintp;
55 with Urealp; use Urealp;
59 ---------------------------------
60 -- Making Changes to This File --
61 ---------------------------------
63 -- If changes are made to this file, a number of related steps must be
64 -- carried out to ensure consistency. First, if a field access function
65 -- is added, it appears in seven places:
67 -- The documentation associated with the node
68 -- The spec of the access function in sinfo.ads
69 -- The body of the access function in sinfo.adb
70 -- The pragma Inline at the end of sinfo.ads for the access function
71 -- The spec of the set procedure in sinfo.ads
72 -- The body of the set procedure in sinfo.adb
73 -- The pragma Inline at the end of sinfo.ads for the set procedure
75 -- The field chosen must be consistent in all places, and, for a node
76 -- that is a subexpression, must not overlap any of the standard
79 -- In addition, if any of the standard expression fields is changed, then
80 -- the utiliy program which creates the Treeprs spec (in file treeprs.ads)
81 -- must be updated appropriately, since it special cases expression fields.
83 -- If a new tree node is added, then the following changes are made
85 -- Add it to the documentation in the appropriate place
86 -- Add its fields to this documentation section
87 -- Define it in the appropriate classification in Node_Kind
88 -- In the body (sinfo), add entries to the access functions for all
89 -- its fields (except standard expression fields) to include the new
90 -- node in the checks.
91 -- Add an appropriate section to the case statement in sprint.adb
92 -- Add an appropriate section to the case statement in sem.adb
93 -- Add an appropraite section to the case statement in exp_util.adb
94 -- (Insert_Actions procedure)
95 -- For a subexpression, add an appropriate sections to the case
96 -- statement in sem_eval.adb
97 -- For a subexpression, add an appropriate sections to the case
98 -- statement in sem_res.adb
100 -- Finally, four utility programs must be run:
102 -- Run CSinfo to check that you have made the changes consistently.
103 -- It checks most of the rules given above, with clear error messages.
104 -- This utility reads sinfo.ads and sinfo.adb and generates a report
105 -- to standard output.
107 -- Run XSinfo to create a-sinfo.h, the corresponding C header. This
108 -- utility reads sinfo.ads and generates a-sinfo.h. Note that it
109 -- does not need to read sinfo.adb, since the contents of the body
110 -- are algorithmically determinable from the spec.
112 -- Run XTreeprs to create treeprs.ads, an updated version of
113 -- the module that is used to drive the tree print routine. This
114 -- utility reads (but does not modify) treeprs.adt, the template
115 -- that provides the basic structure of the file, and then fills
116 -- in the data from the comments in sinfo.ads.
118 -- Run XNmake to create nmake.ads and nmake.adb, the package body
119 -- and spec of the Nmake package which contains functions for
120 -- constructing nodes.
122 -- Note: sometime we could write a utility that actually generated the
123 -- body of sinfo from the spec instead of simply checking it, since, as
124 -- noted 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
131 -- as defined in the RM. However, certain nodes are omitted to save
132 -- space and simplify semantic processing. Two general classes of such
133 -- omitted nodes are as follows:
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 a
139 -- floating point definition or a fixed point definition. No explicit
140 -- node appears for real type definition. Instead either the floating
141 -- point 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
145 -- from the tree, and a list of components appears instead. For
146 -- example, sequence of statements does not appear explicitly in the
147 -- tree. Instead 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,
159 -- number declarations etc.)
161 -- The semantics of such statements are equivalent to a series of
162 -- identical declarations of single defining identifiers (except that
163 -- conformance checks require the same grouping of identifiers in the
166 -- To simplify semantic processing, the parser breaks down such multiple
167 -- declaration cases into sequences of single declarations, duplicating
168 -- type and initialization information as required. The flags More_Ids
169 -- and Prev_Ids are used to record the original form of the source in
170 -- the case where the original source used a list of names, More_Ids
171 -- being set on all but the last name and Prev_Ids being set on all
172 -- but the first name. These flags are used to reconstruct the original
173 -- source (e.g. in the Sprint package), and also are included in the
174 -- conformance checks, but otherwise have no semantic significance.
176 -- Note: the reason that we use More_Ids and Prev_Ids rather than
177 -- First_Name and Last_Name flags is so that the flags are off in the
178 -- normal one identifier case, which minimizes tree print output.
180 -----------------------
181 -- Use of Node Lists --
182 -----------------------
184 -- With a few exceptions, if a construction of the form {non-terminal}
185 -- appears in the tree, lists are used in the corresponding tree node
186 -- (see package Nlists for handling of node lists). In this case a field
187 -- of the parent node points to a list of nodes for the non-terminal. The
188 -- field name for such fields has a plural name which always ends in "s".
189 -- For example, a case statement has a field Alternatives pointing to a
190 -- list of case statement alternative nodes.
192 -- Only fields pointing to lists have names ending in "s", so generally
193 -- the structure is strongly typed, fields not ending in s point to
194 -- single nodes, and fields ending in s point to lists.
196 -- The following example shows how a traversal of a list is written. We
197 -- suppose here that Stmt points to a N_Case_Statement node which has
198 -- a list field called Alternatives:
200 -- Alt := First (Alternatives (Stmt));
201 -- while Present (Alt) loop
203 -- -- processing for case statement alternative Alt
205 -- Alt := Next (Alt);
208 -- The Present function tests for Empty, which in this case signals the
209 -- end of the list. First returns Empty immediately if the list is empty.
210 -- Present is defined in Atree, First and Next are defined in Nlists.
212 -- The exceptions to this rule occur with {DEFINING_IDENTIFIERS} in all
213 -- contexts, which is handled as described in the previous section, and
214 -- with {,library_unit_NAME} in the N_With_Clause mode, which is handled
215 -- using the First_Name and Last_Name flags, as further detailed in the
216 -- description of the N_With_Clause node.
222 -- Pragmas can appear in many different context, but are not included
223 -- in the grammar. Still they must appear in the tree, so they can be
224 -- properly processed.
226 -- Two approaches are used. In some cases, an extra field is defined
227 -- in an appropriate node that contains a list of pragmas appearing
228 -- in the expected context. For example pragmas can appear before an
229 -- Accept_Alternative in a Selective_Accept_Statement, and these pragmas
230 -- appear in the Pragmas_Before field of the N_Accept_Alternative node.
232 -- The other approach is to simply allow pragmas to appear in syntactic
233 -- lists where the grammar (of course) does not include the possibility.
234 -- For example, the Variants field of an N_Variant_Part node points to
235 -- a list that can contain both N_Pragma and N_Variant nodes.
237 -- To make processing easier in the latter case, the Nlists package
238 -- provides a set of routines (First_Non_Pragma, Last_Non_Pragma,
239 -- Next_Non_Pragma, Prev_Non_Pragma) that allow such lists to be
240 -- handled ignoring all pragmas.
242 -- In the case of the variants list, we can either write:
244 -- Variant := First (Variants (N));
245 -- while Present (Variant) loop
247 -- Variant := Next (Variant);
252 -- Variant := First_Non_Pragma (Variants (N));
253 -- while Present (Variant) loop
255 -- Variant := Next_Non_Pragma (Variant);
258 -- In the first form of the loop, Variant can either be an N_Pragma or
259 -- an N_Variant node. In the second form, Variant can only be N_Variant
260 -- since all pragmas are skipped.
262 ---------------------
263 -- Optional Fields --
264 ---------------------
266 -- Fields which correspond to a section of the syntax enclosed in square
267 -- brackets are generally omitted (and the corresponding field set to
268 -- Empty for a node, or No_List for a list). The documentation of such
269 -- fields notes these cases. One exception to this rule occurs in the
270 -- case of possibly empty statement sequences (such as the sequence of
271 -- statements in an entry call alternative). Such cases appear in the
272 -- syntax rules as [SEQUENCE_OF_STATEMENTS] and the fields corresponding
273 -- to such optional statement sequences always contain an empty list (not
274 -- No_List) if no statements are present.
276 -- Note: the utility program that constructs the body and spec of the
277 -- Nmake package relies on the format of the comments to determine if
278 -- a field should have a default value in the corresponding make routine.
279 -- The rule is that if the first line of the description of the field
280 -- contains the string "(set to xxx if", then a default value of xxx is
281 -- provided for this field in the corresponding Make_yyy routine.
283 -----------------------------------
284 -- Note on Body/Spec Terminology --
285 -----------------------------------
287 -- In informal discussions about Ada, it is customary to refer to package
288 -- and subprogram specs and bodies. However, this is not technically
289 -- correct, what is normally referred to as a spec or specification is in
290 -- fact a package declaration or subprogram declaration. We are careful
291 -- in GNAT to use the correct terminology and in particular, the full
292 -- word specification is never used as an incorrect substitute for
293 -- declaration. The structure and terminology used in the tree also
294 -- reflects the grammar and thus uses declaration and specification in
295 -- the technically correct manner.
297 -- However, there are contexts in which the informal terminology is
298 -- useful. We have the word "body" to refer to the Interp_Etype declared by
299 -- the declaration of a unit body, and in some contexts we need a
300 -- similar term to refer to the entity declared by the package or
301 -- subprogram declaration, and simply using declaration can be confusing
302 -- since the body also has a declaration.
304 -- An example of such a context is the link between the package body
305 -- and its declaration. With_Declaration is confusing, since
306 -- the package body itself is a declaration.
308 -- To deal with this problem, we reserve the informal term Spec, i.e.
309 -- the popular abbreviation used in this context, to refer to the entity
310 -- declared by the package or subprogram declaration. So in the above
311 -- example case, the field in the body is called With_Spec.
313 -- Another important context for the use of the word Spec is in error
314 -- messages, where a hyper-correct use of declaration would be confusing
315 -- to a typical Ada programmer, and even for an expert programmer can
316 -- cause confusion since the body has a declaration as well.
320 -- Declaration always refers to the syntactic entity that is called
321 -- a declaration. In particular, subprogram declaration
322 -- and package declaration are used to describe the
323 -- syntactic entity that includes the semicolon.
325 -- Specification always refers to the syntactic entity that is called
326 -- a specification. In particular, the terms procedure
327 -- specification, function specification, package
328 -- specification, subprogram specification always refer
329 -- to the syntactic entity that has no semicolon.
331 -- Spec is an informal term, used to refer to the entity
332 -- that is declared by a task declaration, protected
333 -- declaration, generic declaration, subprogram
334 -- declaration or package declaration.
336 -- This convention is followed throughout the GNAT documentation
337 -- both internal and external, and in all error message text.
339 ------------------------
340 -- Internal Use Nodes --
341 ------------------------
343 -- These are Node_Kind settings used in the internal implementation
344 -- which are not logically part of the specification.
347 -- Completely unused entry at the start of the enumeration type. This
348 -- is inserted so that no legitimate value is zero, which helps to get
349 -- better debugging behavior, since zero is a likely uninitialized value).
352 -- Completely unused entry at the end of the enumeration type. This is
353 -- handy so that arrays with Node_Kind as the index type have an extra
354 -- entry at the end (see for example the use of the Pchar_Pos_Array in
355 -- Treepr, where the extra entry provides the limit value when dealing
356 -- with the last used entry in the array).
358 -----------------------------------------
359 -- Note on the settings of Sloc fields --
360 -----------------------------------------
362 -- The Sloc field of nodes that come from the source is set by the
363 -- parser. For internal nodes, and nodes generated during expansion
364 -- the Sloc is usually set in the call to the constructor for the node.
365 -- In general the Sloc value chosen for an internal node is the Sloc of
366 -- the source node whose processing is responsible for the expansion. For
367 -- example, the Sloc of an inherited primitive operation is the Sloc of
368 -- the corresponding derived type declaration.
370 -- For the nodes of a generic instantiation, the Sloc value is encoded
371 -- to represent both the original Sloc in the generic unit, and the Sloc
372 -- of the instantiation itself. See Sinput.ads for details.
374 -- Subprogram instances create two callable entities: one is the visible
375 -- subprogram instance, and the other is an anonymous subprogram nested
376 -- within a wrapper package that contains the renamings for the actuals.
377 -- Both of these entities have the Sloc of the defining entity in the
378 -- instantiation node. This simplifies some ASIS queries.
380 -----------------------
381 -- Field Definitions --
382 -----------------------
384 -- In the following node definitions, all fields, both syntactic and
385 -- semantic, are documented. The one exception is in the case of entities
386 -- (defining indentifiers, character literals and operator symbols),
387 -- where the usage of the fields depends on the entity kind. Entity
388 -- fields are fully documented in the separate package Einfo.
390 -- In the node definitions, three common sets of fields are abbreviated
391 -- to save both space in the documentation, and also space in the string
392 -- (defined in Tree_Print_Strings) used to print trees. The following
393 -- abbreviations are used:
395 -- Note: the utility program that creates the Treeprs spec (in the file
396 -- xtreeprs.adb) knows about the special fields here, so it must be
397 -- modified if any change is made to these fields.
399 -- "plus fields for binary operator"
400 -- Chars (Name1) Name_Id for the operator
401 -- Left_Opnd (Node2) left operand expression
402 -- Right_Opnd (Node3) right operand expression
403 -- Entity (Node4-Sem) defining entity for operator
404 -- Associated_Node (Node4-Sem) for generic processing
405 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
406 -- Has_Private_View (Flag11-Sem) set in generic units.
408 -- "plus fields for unary operator"
409 -- Chars (Name1) Name_Id for the operator
410 -- Right_Opnd (Node3) right operand expression
411 -- Entity (Node4-Sem) defining entity for operator
412 -- Associated_Node (Node4-Sem) for generic processing
413 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
414 -- Has_Private_View (Flag11-Sem) set in generic units.
416 -- "plus fields for expression"
417 -- Paren_Count number of parentheses levels
418 -- Etype (Node5-Sem) type of the expression
419 -- Is_Overloaded (Flag5-Sem) >1 type interpretation exists
420 -- Is_Static_Expression (Flag6-Sem) set for static expression
421 -- Raises_Constraint_Error (Flag7-Sem) evaluation raises CE
422 -- Must_Not_Freeze (Flag8-Sem) set if must not freeze
423 -- Do_Range_Check (Flag9-Sem) set if a range check needed
424 -- Assignment_OK (Flag15-Sem) set if modification is OK
425 -- Is_Controlling_Actual (Flag16-Sem) set for controlling argument
427 -- Note: see under (EXPRESSION) for further details on the use of
428 -- the Paren_Count field to record the number of parentheses levels.
430 -- Node_Kind is the type used in the Nkind field to indicate the node
431 -- kind. The actual definition of this type is given later (the reason
432 -- for this is that we want the descriptions ordered by logical chapter
433 -- in the RM, but the type definition is reordered to facilitate the
434 -- definition of some subtype ranges. The individual descriptions of
435 -- the nodes show how the various fields are used in each node kind,
436 -- as well as providing logical names for the fields. Functions and
437 -- procedures are provided for accessing and setting these fields
438 -- using these logical names.
440 -----------------------
441 -- Gigi Restrictions --
442 -----------------------
444 -- The tree passed to Gigi is more restricted than the general tree form.
445 -- For example, as a result of expansion, most of the tasking nodes can
446 -- never appear. For each node to which either a complete or partial
447 -- restriction applies, a note entitled "Gigi restriction" appears which
448 -- documents the restriction.
450 -- Note that most of these restrictions apply only to trees generated when
451 -- code is being generated, since they involved expander actions that
454 ------------------------
455 -- Common Flag Fields --
456 ------------------------
458 -- The following flag fields appear in all nodes
461 -- This flag is used to indicate that a node (and all its children
462 -- have been analyzed. It is used to avoid reanalysis of a node that
463 -- has already been analyzed, both for efficiency and functional
464 -- correctness reasons.
467 -- This flag is used to avoid multiple error messages being posted
468 -- on or referring to the same node. This flag is set if an error
469 -- message refers to a node or is posted on its source location,
470 -- and has the effect of inhibiting further messages involving
474 -- This flag is on for any nodes built by the scanner or parser from
475 -- the source program, and off for any nodes built by the analyzer or
476 -- expander. It indicates that a node comes from the original source.
477 -- This flag is defined in Atree.
479 -- Has_Dynamic_Length_Check and Has_Dynamic_Range_Check also appear on
480 -- all nodes. They are fully described in the next section.
482 ------------------------------------
483 -- Description of Semantic Fields --
484 ------------------------------------
486 -- The meaning of the syntactic fields is generally clear from their
487 -- names without any further description, since the names are chosen
488 -- to correspond very closely to the syntax in the reference manual.
489 -- This section describes the usage of the semantic fields, which are
490 -- used to contain additional information determined during semantic
493 -- ABE_Is_Certain (Flag18-Sem)
494 -- This flag is set in an instantiation node or a call node is
495 -- determined to be sure to raise an ABE. This is used to trigger
496 -- special handling of such cases, particularly in the instantiation
497 -- case where we avoid instantiating the body if this flag is set.
498 -- This flag is also present in an N_Formal_Package_Declaration_Node
499 -- since formal package declarations are treated like instantiations,
500 -- but it is always set to False in this context.
502 -- Accept_Handler_Records (List5-Sem)
503 -- This field is present only in an N_Accept_Alternative node. It is
504 -- used to temporarily hold the exception handler records from an
505 -- accept statement in a selective accept. These exception handlers
506 -- will eventually be placed in the Handler_Records list of the
507 -- procedure built for this accept (see Expand_N_Selective_Accept
508 -- procedure in Exp_Ch9 for further details).
510 -- Access_Types_To_Process (Elist2-Sem)
511 -- Present in N_Freeze_Entity nodes for Incomplete or private types.
512 -- Contains the list of access types which may require specific
513 -- treatment when the nature of the type completion is completely
514 -- known. An example of such treatement is the generation of the
515 -- associated_final_chain.
517 -- Actions (List1-Sem)
518 -- This field contains a sequence of actions that are associated
519 -- with the node holding the field. See the individual node types
520 -- for details of how this field is used, as well as the description
521 -- of the specific use for a particular node type.
523 -- Activation_Chain_Entity (Node3-Sem)
524 -- This is used in tree nodes representing task activators (blocks,
525 -- subprogram bodies, package declarations, and task bodies). It is
526 -- initially Empty, and then gets set to point to the entity for the
527 -- declared Activation_Chain variable when the first task is declared.
528 -- When tasks are declared in the corresponding declarative region
529 -- this entity is located by name (its name is always _Chain) and
530 -- the declared tasks are added to the chain.
532 -- Acts_As_Spec (Flag4-Sem)
533 -- A flag set in the N_Subprogram_Body node for a subprogram body
534 -- which is acting as its own spec. This flag also appears in the
535 -- compilation unit node at the library level for such a subprogram
536 -- (see further description in spec of Lib package).
538 -- Aggregate_Bounds (Node3-Sem)
539 -- Present in array N_Aggregate nodes. If the aggregate contains
540 -- component associations this field points to an N_Range node whose
541 -- bounds give the lowest and highest discrete choice values. If the
542 -- named aggregate contains a dynamic or null choice this field is
543 -- empty. If the aggregate contains positional elements this field
544 -- points to an N_Integer_Literal node giving the number of positional
545 -- elements. Note that if the aggregate contains positional elements
546 -- and an other choice the N_Integer_Literal only accounts for the
547 -- number of positional elements.
549 -- All_Others (Flag11-Sem)
550 -- Present in an N_Others_Choice node. This flag is set in the case
551 -- of an others exception where all exceptions are to be caught, even
552 -- those that are not normally handled (in particular the tasking abort
553 -- signal). This is used for translation of the at end handler into
554 -- a normal exception handler.
556 -- Assignment_OK (Flag15-Sem)
557 -- This flag is set in a subexpression node for an object, indicating
558 -- that the associated object can be modified, even if this would not
559 -- normally be permissible (either by direct assignment, or by being
560 -- passed as an out or in-out parameter). This is used by the expander
561 -- for a number of purposes, including initialzation of constants and
562 -- limited type objects (such as tasks), setting discriminant fields,
563 -- setting tag values, etc. N_Object_Declaration nodes also have this
564 -- flag defined. Here it is used to indicate that an initialization
565 -- expression is valid, even where it would normally not be allowed
566 -- (e.g. where the type involved is limited).
568 -- Associated_Node (Node4-Sem)
569 -- Present in nodes that can denote an entity: identifiers, character
570 -- literals, operator symbols, expanded names, operator nodes, and
571 -- attribute reference nodes (all these nodes have an Entity field).
572 -- This field is also present in N_Aggregate, N_Selected_Component,
573 -- and N_Extension_Aggregate nodes. This field is used in generic
574 -- processing to create links between the generic template and the
575 -- generic copy. See Sem_Ch12.Get_Associated_Node for full details.
576 -- Note that this field overlaps Entity, which is fine, since, as
577 -- explained in Sem_Ch12, the normal function of Entity is not
578 -- required at the point where the Associated_Node is set. Note
579 -- also, that in generic templates, this means that the Entity field
580 -- does not necessarily point to an Entity. Since the back end is
581 -- expected to ignore generic templates, this is harmless.
583 -- At_End_Proc (Node1)
584 -- This field is present in an N_Handled_Sequence_Of_Statements node.
585 -- It contains an identifier reference for the cleanup procedure to
586 -- be called. See description of this node for further details.
588 -- Backwards_OK (Flag6-Sem)
589 -- A flag present in the N_Assignment_Statement node. It is used only
590 -- if the type being assigned is an array type, and is set if analysis
591 -- determines that it is definitely safe to do the copy backwards, i.e.
592 -- starting at the highest addressed element. Note that if neither of
593 -- the flags Forwards_OK or Backwards_OK is set, it means that the
594 -- front end could not determine that either direction is definitely
595 -- safe, and a runtime check is required.
597 -- Body_To_Inline (Node3-Sem)
598 -- present in subprogram declarations. Denotes analyzed but unexpanded
599 -- body of subprogram, to be used when inlining calls. Present when the
600 -- subprogram has an Inline pragma and inlining is enabled. If the
601 -- declaration is completed by a renaming_as_body, and the renamed en-
602 -- tity is a subprogram, the Body_To_Inline is the name of that entity,
603 -- which is used directly in later calls to the original subprogram.
605 -- Body_Required (Flag13-Sem)
606 -- A flag that appears in the N_Compilation_Unit node indicating that
607 -- the corresponding unit requires a body. For the package case, this
608 -- indicates that a completion is required. In Ada 95, if the flag
609 -- is not set for the package case, then a body may not be present.
610 -- In Ada 83, if the flag is not set for the package case, then a
611 -- body is optional. For a subprogram declaration, the flag is set
612 -- except in the case where a pragma Import or Interface applies,
613 -- in which case no body is permitted (in Ada 83 or Ada 95).
615 -- By_Ref (Flag5-Sem)
616 -- A flag present in the N_Return_Statement_Node. It is set when the
617 -- returned expression is already allocated on the secondary stack
618 -- and thus the result is passed by reference rather than copied
621 -- Check_Address_Alignment (Flag11-Sem)
622 -- A flag present in N_Attribute_Definition clause for a 'Address
623 -- attribute definition. This flag is set if a dynamic check should
624 -- be generated at the freeze point for the entity to which this
625 -- address clause applies. The reason that we need this flag is that
626 -- we want to check for range checks being suppressed at the point
627 -- where the attribute definition clause is given, rather than
628 -- testing this at the freeze point.
630 -- Compile_Time_Known_Aggregate (Flag18-Sem)
631 -- Present in N_Aggregate nodes. Set for aggregates which can be
632 -- fully evaluated at compile time without raising constraint error.
633 -- Such aggregates can be passed as is to Gigi without any expansion.
634 -- See Sem_Aggr for the specific conditions under which an aggregate
635 -- has this flag set. See also the flag Static_Processing_OK.
637 -- Condition_Actions (List3-Sem)
638 -- This field appears in else-if nodes and in the iteration scheme
639 -- node for while loops. This field is only used during semantic
640 -- processing to temporarily hold actions inserted into the tree.
641 -- In the tree passed to gigi, the condition actions field is always
642 -- set to No_List. For details on how this field is used, see the
643 -- routine Insert_Actions in package Exp_Util, and also the expansion
644 -- routines for the relevant nodes.
646 -- Controlling_Argument (Node1-Sem)
647 -- This field is set in procedure and function call nodes if the call
648 -- is a dispatching call (it is Empty for a non-dispatching call).
649 -- It indicates the source of the controlling tag for the call. For
650 -- Procedure calls, the Controlling_Argument is one of the actuals.
651 -- For a function that has a dispatching result, it is an entity in
652 -- the context of the call that can provide a tag, or else it is the
653 -- tag of the root type of the class.
655 -- Conversion_OK (Flag14-Sem)
656 -- A flag set on type conversion nodes to indicate that the conversion
657 -- is to be considered as being valid, even though it is the case that
658 -- the conversion is not valid Ada. This is used for the Enum_Rep,
659 -- Fixed_Value and Integer_Value attributes, for internal conversions
660 -- done for fixed-point operations, and for certain conversions for
661 -- calls to initialization procedures. If Conversion_OK is set, then
662 -- Etype must be set (the analyzer assumes that Etype has been set).
663 -- For the case of fixed-point operands, it also indicates that the
664 -- conversion is to be a direct conversion of the underlying integer
665 -- result, with no regard to the small operand.
667 -- Corresponding_Body (Node5-Sem)
668 -- This field is set in subprogram declarations, package declarations,
669 -- entry declarations of protected types, and in generic units. It
670 -- points to the defining entity for the corresponding body (NOT the
671 -- node for the body itself).
673 -- Corresponding_Generic_Association (Node5-Sem)
674 -- This field is defined for object declarations and object renaming
675 -- declarations. It is set for the declarations within an instance that
676 -- map generic formals to their actuals. If set, the field points to
677 -- a generic_association which is the original parent of the expression
678 -- or name appearing in the declaration. This simplifies ASIS queries.
680 -- Corresponding_Integer_Value (Uint4-Sem)
681 -- This field is set in real literals of fixed-point types (it is not
682 -- used for floating-point types). It contains the integer value used
683 -- to represent the fixed-point value. It is also set on the universal
684 -- real literals used to represent bounds of fixed-point base types
685 -- and their first named subtypes.
687 -- Corresponding_Spec (Node5-Sem)
688 -- This field is set in subprogram, package, task, and protected body
689 -- nodes, where it points to the defining entity in the corresponding
690 -- spec. The attribute is also set in N_With_Clause nodes, where
691 -- it points to the defining entity for the with'ed spec, and in
692 -- a subprogram renaming declaration when it is a Renaming_As_Body.
693 -- The field is Empty if there is no corresponding spec, as in the
694 -- case of a subprogram body that serves as its own spec.
696 -- Corresponding_Stub (Node3-Sem)
697 -- This field is present in an N_Subunit node. It holds the node in
698 -- the parent unit that is the stub declaration for the subunit. it is
699 -- set when analysis of the stub forces loading of the proper body. If
700 -- expansion of the proper body creates new declarative nodes, they are
701 -- inserted at the point of the corresponding_stub.
703 -- Dcheck_Function (Node5-Sem)
704 -- This field is present in an N_Variant node, It references the entity
705 -- for the discriminant checking function for the variant.
707 -- Debug_Statement (Node3)
708 -- This field is present in an N_Pragma node. It is used only for
709 -- a Debug pragma or pragma Assert with a second parameter. The
710 -- parameter is of the form of an expression, as required by the
711 -- pragma syntax, but is actually a procedure call. To simplify
712 -- semantic processing, the parser creates a copy of the argument
713 -- rearranged into a procedure call statement and places it in the
714 -- Debug_Statement field. Note that this field is considered a
715 -- syntactic field, since it is created by the parser.
717 -- Default_Expression (Node5-Sem)
718 -- This field is Empty if there is no default expression. If there
719 -- is a simple default expression (one with no side effects), then
720 -- this field simply contains a copy of the Expression field (both
721 -- point to the tree for the default expression). Default_Expression
722 -- is used for conformance checking.
724 -- Delay_Finalize_Attach (Flag14-Sem)
725 -- This flag is present in an N_Object_Declaration node. If it is set,
726 -- then in the case of a controlled type being declared and initialized,
727 -- the normal code for attaching the result to the appropriate local
728 -- finalization list is suppressed. This is used for functions that
729 -- return controlled types without using the secondary stack, where
730 -- it is the caller who must do the attachment.
732 -- Discr_Check_Funcs_Built (Flag11-Sem)
733 -- This flag is present in N_Full_Type_Declaration nodes. It is set when
734 -- discriminant checking functions are constructed. The purpose is to
735 -- avoid attempting to set these functions more than once.
737 -- Do_Accessibility_Check (Flag13-Sem)
738 -- This flag is set on N_Parameter_Specification nodes to indicate
739 -- that an accessibility check is required for the parameter. It is
740 -- not yet decided who takes care of this check (TBD ???).
742 -- Do_Discriminant_Check (Flag13-Sem)
743 -- This flag is set on N_Selected_Component nodes to indicate that a
744 -- discriminant check is required using the discriminant check routine
745 -- associated with the selector. The actual check is generated by the
746 -- expander when processing selected components.
748 -- Do_Division_Check (Flag13-Sem)
749 -- This flag is set on a division operator (/ mod rem) to indicate
750 -- that a zero divide check is required. The actual check is dealt
751 -- with by the backend (all the front end does is to set the flag).
753 -- Do_Length_Check (Flag4-Sem)
754 -- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
755 -- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
756 -- is required. It is not determined who deals with this flag (???).
758 -- Do_Overflow_Check (Flag17-Sem)
759 -- This flag is set on an operator where an overflow check is required
760 -- on the operation. The actual check is dealt with by the backend
761 -- (all the front end does is to set the flag). The other cases where
762 -- this flag is used is on a Type_Conversion node and for attribute
763 -- reference nodes. For a type conversion, it means that the conversion
764 -- is from one base type to another, and the value may not fit in the
765 -- target base type. See also the description of Do_Range_Check for
766 -- this case. The only attribute references which use this flag are
767 -- Pred and Succ, where it means that the result should be checked
768 -- for going outside the base range.
770 -- Do_Range_Check (Flag9-Sem)
771 -- This flag is set on an expression which appears in a context where
772 -- a range check is required. The target type is clear from the
773 -- context. The contexts in which this flag can appear are limited to
776 -- Right side of an assignment. In this case the target type is
777 -- taken from the left side of the assignment, which is referenced
778 -- by the Name of the N_Assignment_Statement node.
780 -- Subscript expressions in an indexed component. In this case the
781 -- target type is determined from the type of the array, which is
782 -- referenced by the Prefix of the N_Indexed_Component node.
784 -- Argument expression for a parameter, appearing either directly
785 -- in the Parameter_Associations list of a call or as the Expression
786 -- of an N_Parameter_Association node that appears in this list. In
787 -- either case, the check is against the type of the formal. Note
788 -- that the flag is relevant only in IN and IN OUT parameters, and
789 -- will be ignored for OUT parameters, where no check is required
790 -- in the call, and if a check is required on the return, it is
791 -- generated explicitly with a type conversion.
793 -- Initialization expression for the initial value in an object
794 -- declaration. In this case the Do_Range_Check flag is set on
795 -- the initialization expression, and the check is against the
796 -- range of the type of the object being declared.
798 -- The expression of a type conversion. In this case the range check
799 -- is against the target type of the conversion. See also the use of
800 -- Do_Overflow_Check on a type conversion. The distinction is that
801 -- the overflow check protects against a value that is outside the
802 -- range of the target base type, whereas a range check checks that
803 -- the resulting value (which is a value of the base type of the
804 -- target type), satisfies the range constraint of the target type.
806 -- Note: when a range check is required in contexts other than those
807 -- listed above (e.g. in a return statement), an additional type
808 -- conversion node is introduced to represent the required check.
810 -- Do_Storage_Check (Flag17-Sem)
811 -- This flag is set in an N_Allocator node to indicate that a storage
812 -- check is required for the allocation, or in an N_Subprogram_Body
813 -- node to indicate that a stack check is required in the subprogram
814 -- prolog. The N_Allocator case is handled by the routine that expands
815 -- the call to the runtime routine. The N_Subprogram_Body case is
816 -- handled by the backend, and all the semantics does is set the flag.
818 -- Do_Tag_Check (Flag13-Sem)
819 -- This flag is set on an N_Assignment_Statement, N_Function_Call,
820 -- N_Procedure_Call_Statement, N_Type_Conversion or N_Return_Statememt
821 -- node to indicate that the tag check can be suppressed. It is not
822 -- yet decided how this flag is used (TBD ???).
824 -- Elaborate_Present (Flag4-Sem)
825 -- This flag is set in the N_With_Clause node to indicate that a
826 -- pragma Elaborate pragma appears for the with'ed units.
828 -- Elaborate_All_Present (Flag14-Sem)
829 -- This flag is set in the N_With_Clause node to indicate that a
830 -- pragma Elaborate_All pragma appears for the with'ed units.
832 -- Elaboration_Boolean (Node2-Sem)
833 -- This field is present in function and procedure specification
834 -- nodes. If set, it points to the entity for a Boolean flag that
835 -- must be tested for certain calls to check for access before
836 -- elaboration. See body of Sem_Elab for further details. This
837 -- field is Empty if no elaboration boolean is required.
839 -- Else_Actions (List3-Sem)
840 -- This field is present in conditional expression nodes. During code
841 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
842 -- actions at an appropriate place in the tree to get elaborated at the
843 -- right time. For conditional expressions, we have to be sure that the
844 -- actions for the Else branch are only elaborated if the condition is
845 -- False. The Else_Actions field is used as a temporary parking place
846 -- for these actions. The final tree is always rewritten to eliminate
847 -- the need for this field, so in the tree passed to Gigi, this field
848 -- is always set to No_List.
850 -- Enclosing_Variant (Node2-Sem)
851 -- This field is present in the N_Variant node and identifies the
852 -- Node_Id corresponding to the immediately enclosing variant when
853 -- the variant is nested, and N_Empty otherwise. Set during semantic
854 -- processing of the variant part of a record type.
856 -- Entity (Node4-Sem)
857 -- Appears in all direct names (identifier, character literal,
858 -- operator symbol), as well as expanded names, and attributes that
859 -- denote entities, such as 'Class. Points to the entity for the
860 -- corresponding defining occurrence. Set after name resolution.
861 -- In the case of identifiers in a WITH list, the corresponding
862 -- defining occurrence is in a separately compiled file, and this
863 -- pointer must be set using the library Load procedure. Note that
864 -- during name resolution, the value in Entity may be temporarily
865 -- incorrect (e.g. during overload resolution, Entity is initially
866 -- set to the first possible correct interpretation, and then later
867 -- modified if necessary to contain the correct value after resolution).
868 -- Note that this field overlaps Associated_Node, which is used during
869 -- generic processing (see Sem_Ch12 for details). Note also that in
870 -- generic templates, this means that the Entity field does not always
871 -- point to an Entity. Since the back end is expected to ignore
872 -- generic templates, this is harmless.
874 -- Entity_Or_Associated_Node (Node4-Sem)
875 -- A synonym for both Entity and Associated_Node. Used by convention
876 -- in the code when referencing this field in cases where it is not
877 -- known whether the field contains an Entity or an Associated_Node.
880 -- Appears in all expression nodes, all direct names, and all
881 -- entities. Points to the entity for the related type. Set after
882 -- type resolution. Normally this is the actual subtype of the
883 -- expression. However, in certain contexts such as the right side
884 -- of an assignment, subscripts, arguments to calls, returned value
885 -- in a function, initial value etc. it is the desired target type.
886 -- In the event that this is different from the actual type, the
887 -- Do_Range_Check flag will be set if a range check is required.
888 -- Note: if the Is_Overloaded flag is set, then Etype points to
889 -- an essentially arbitrary choice from the possible set of types.
891 -- Exception_Junk (Flag11-Sem)
892 -- This flag is set in a various nodes appearing in a statement
893 -- sequence to indicate that the corresponding node is an artifact
894 -- of the generated code for exception handling, and should be
895 -- ignored when analyzing the control flow of the relevant sequence
896 -- of statements (e.g. to check that it does not end with a bad
897 -- return statement).
899 -- Expansion_Delayed (Flag11-Sem)
900 -- Set on aggregates and extension aggregates that need a top-down
901 -- rather than bottom up expansion. Typically aggregate expansion
902 -- happens bottom up. For nested aggregates the expansion is delayed
903 -- until the enclosing aggregate itself is expanded, e.g. in the context
904 -- of a declaration. To delay it we set this flag. This is done to
905 -- avoid creating a temporary for each level of a nested aggregates,
906 -- and also to prevent the premature generation of constraint checks.
907 -- This is also a requirement if we want to generate the proper
908 -- attachment to the internal finalization lists (for record with
909 -- controlled components). Top down expansion of aggregates is also
910 -- used for in-place array aggregate assignment or initialization.
911 -- When the full context is known, the target of the assignment or
912 -- initialization is used to generate the left-hand side of individual
913 -- assignment to each sub-component.
915 -- First_Inlined_Subprogram (Node3-Sem)
916 -- Present in the N_Compilation_Unit node for the main program. Points
917 -- to a chain of entities for subprograms that are to be inlined. The
918 -- Next_Inlined_Subprogram field of these entities is used as a link
919 -- pointer with Empty marking the end of the list. This field is Empty
920 -- if there are no inlined subprograms or inlining is not active.
922 -- First_Named_Actual (Node4-Sem)
923 -- Present in procedure call statement and function call nodes, and
924 -- also in Intrinsic nodes. Set during semantic analysis to point to
925 -- the first named parameter where parameters are ordered by declaration
926 -- order (as opposed to the actual order in the call which may be
927 -- different due to named associations). Note: this field points to the
928 -- explicit actual parameter itself, not the N_Parameter_Association
929 -- node (its parent).
931 -- First_Real_Statement (Node2-Sem)
932 -- Present in N_Handled_Sequence_Of_Statements node. Normally set to
933 -- Empty. Used only when declarations are moved into the statement
934 -- part of a construct as a result of wrapping an AT END handler that
935 -- is required to cover the declarations. In this case, this field is
936 -- used to remember the location in the statements list of the first
937 -- real statement, i.e. the statement that used to be first in the
938 -- statement list before the declarations were prepended.
940 -- First_Subtype_Link (Node5-Sem)
941 -- Present in N_Freeze_Entity node for an anonymous base type that
942 -- is implicitly created by the declaration of a first subtype. It
943 -- points to the entity for the first subtype.
945 -- Float_Truncate (Flag11-Sem)
946 -- A flag present in type conversion nodes. This is used for float
947 -- to integer conversions where truncation is required rather than
948 -- rounding. Note that Gigi does not handle type conversions from real
949 -- to integer with rounding (see Expand_N_Type_Conversion).
951 -- Forwards_OK (Flag5-Sem)
952 -- A flag present in the N_Assignment_Statement node. It is used only
953 -- if the type being assigned is an array type, and is set if analysis
954 -- determines that it is definitely safe to do the copy forwards, i.e.
955 -- starting at the lowest addressed element. Note that if neither of
956 -- the flags Forwards_OK or Backwards_OK is set, it means that the
957 -- front end could not determine that either direction is definitely
958 -- safe, and a runtime check is required.
960 -- From_At_Mod (Flag4-Sem)
961 -- This flag is set on the attribute definition clause node that is
962 -- generated by a transformation of an at mod phrase in a record
963 -- representation clause. This is used to give slightly different
964 -- (Ada 83 compatible) semantics to such a clause, namely it is
965 -- used to specify a minimum acceptable alignment for the base type
966 -- and all subtypes. In Ada 95 terms, the actual alignment of the
967 -- base type and all subtypes must be a multiple of the given value,
968 -- and the representation clause is considered to be type specific
969 -- instead of subtype specific.
971 -- From_Default (Flag6-Sem)
972 -- This flag is set on the subprogram renaming declaration created in
973 -- an instance for a formal subprogram, when the formal is declared
974 -- with a box, and there is no explicit actual. If the flag is present,
975 -- the declaration is treated as an implicit reference to the formal in
978 -- Generic_Parent (Node5-Sem)
979 -- Generic_parent is defined on declaration nodes that are instances.
980 -- The value of Generic_Parent is the generic entity from which the
981 -- instance is obtained. Generic_Parent is also defined for the renaming
982 -- declarations and object declarations created for the actuals in an
983 -- instantiation. The generic parent of such a declaration is the
984 -- corresponding generic association in the Instantiation node.
986 -- Generic_Parent_Type (Node4-Sem)
987 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for
988 -- the actuals of formal private and derived types. Within the instance,
989 -- the operations on the actual are those inherited from the parent.
990 -- For a formal private type, the parent type is the generic type
991 -- itself. The Generic_Parent_Type is also used in an instance to
992 -- determine whether a private operation overrides an inherited one.
994 -- Handler_List_Entry (Node2-Sem)
995 -- This field is present in N_Object_Declaration nodes. It is set only
996 -- for the Handler_Record entry generated for an exception in zero cost
997 -- exception handling mode. It references the corresponding item in the
998 -- handler list, and is used to delete this entry if the corresponding
999 -- handler is deleted during optimization. For further details on why
1000 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
1002 -- Has_Dynamic_Length_Check (Flag10-Sem)
1003 -- This flag is present on all nodes. It is set to indicate that one
1004 -- of the routines in unit Checks has generated a length check action
1005 -- which has been inserted at the flagged node. This is used to avoid
1006 -- the generation of duplicate checks.
1008 -- Has_Dynamic_Range_Check (Flag12-Sem)
1009 -- This flag is present on all nodes. It is set to indicate that one
1010 -- of the routines in unit Checks has generated a range check action
1011 -- which has been inserted at the flagged node. This is used to avoid
1012 -- the generation of duplicate checks.
1014 -- Has_No_Elaboration_Code (Flag17-Sem)
1015 -- A flag that appears in the N_Compilation_Unit node to indicate
1016 -- whether or not elaboration code is present for this unit. It is
1017 -- initially set true for subprogram specs and bodies and for all
1018 -- generic units and false for non-generic package specs and bodies.
1019 -- Gigi may set the flag in the non-generic package case if it
1020 -- determines that no elaboration code is generated. Note that this
1021 -- flag is not related to the Is_Preelaborated status, there can be
1022 -- preelaborated packages that generate elaboration code, and non-
1023 -- preelaborated packages which do not generate elaboration code.
1025 -- Has_Priority_Pragma (Flag6-Sem)
1026 -- A flag present in N_Subprogram_Body, N_Task_Definition and
1027 -- N_Protected_Definition nodes to flag the presence of either
1028 -- a Priority or Interrupt_Priority pragma in the declaration
1029 -- sequence (public or private in the task and protected cases)
1031 -- Has_Private_View (Flag11-Sem)
1032 -- A flag present in generic nodes that have an entity, to indicate
1033 -- that the node has a private type. Used to exchange private
1034 -- and full declarations if the visibility at instantiation is
1035 -- different from the visibility at generic definition.
1037 -- Has_Storage_Size_Pragma (Flag5-Sem)
1038 -- A flag present in an N_Task_Definition node to flag the presence
1039 -- of a Storage_Size pragma
1041 -- Has_Task_Info_Pragma (Flag7-Sem)
1042 -- A flag present in an N_Task_Definition node to flag the presence
1043 -- of a Task_Info pragma. Used to detect duplicate pragmas.
1045 -- Has_Task_Name_Pragma (Flag8-Sem)
1046 -- A flag present in N_Task_Definition nodes to flag the presence
1047 -- of a Task_Name pragma in the declaration sequence for the task.
1049 -- Has_Wide_Character (Flag11-Sem)
1050 -- Present in string literals, set if any wide character (i.e. a
1051 -- character code outside the Character range) appears in the string.
1053 -- Hidden_By_Use_Clause (Elist4-Sem)
1054 -- An entity list present in use clauses that appear within
1055 -- instantiations. For the resolution of local entities, entities
1056 -- introduced by these use clauses have priority over global ones,
1057 -- and outer entities must be explicitly hidden/restored on exit.
1059 -- Implicit_With (Flag16-Sem)
1060 -- This flag is set in the N_With_Clause node that is implicitly
1061 -- generated for runtime units that are loaded by the expander, and
1062 -- also for package System, if it is loaded implicitly by a use of
1063 -- the 'Address or 'Tag attribute
1065 -- Includes_Infinities (Flag11-Sem)
1066 -- This flag is present in N_Range nodes. It is set for the range
1067 -- of unconstrained float types defined in Standard, which include
1068 -- not only the given range of values, but also legtitimately can
1069 -- include infinite values. This flag is false for any float type
1070 -- for which an explicit range is given by the programmer, even if
1071 -- that range is identical to the range for float.
1073 -- Instance_Spec (Node5-Sem)
1074 -- This field is present in generic instantiation nodes, and also in
1075 -- formal package declaration nodes (formal package declarations are
1076 -- treated in a manner very similar to package instantiations). It
1077 -- points to the node for the spec of the instance, inserted as part
1078 -- of the semantic processing for instantiations in Sem_Ch12.
1080 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1081 -- A flag set in a Block_Statement node to indicate that it is the
1082 -- expansion of an asynchronous entry call. Such a block needs a
1083 -- cleanup handler to assure that the call is cancelled.
1085 -- Is_Component_Left_Opnd (Flag13-Sem)
1086 -- Is_Component_Right_Opnd (Flag14-Sem)
1087 -- Present in concatenation nodes, to indicate that the corresponding
1088 -- operand is of the component type of the result. Used in resolving
1089 -- concatenation nodes in instances.
1091 -- Is_Controlling_Actual (Flag16-Sem)
1092 -- This flag is set on in an expression that is a controlling argument
1093 -- in a dispatching call. It is off in all other cases. See Sem_Disp
1094 -- for details of its use.
1096 -- Is_In_Discriminant_Check (Flag11-Sem)
1097 -- This flag is present in a selected component, and is used to
1098 -- indicate that the reference occurs within a discriminant check.
1099 -- The significance is that optimizations based on assuming that
1100 -- the discriminant check has a correct value cannot be performed
1101 -- in this case (or the disriminant check may be optimized away!)
1103 -- Is_Machine_Number (Flag11-Sem)
1104 -- This flag is set in an N_Real_Literal node to indicate that the
1105 -- value is a machine number. This avoids some unnecessary cases
1106 -- of converting real literals to machine numbers.
1108 -- Is_Null_Loop (Flag16-Sem)
1109 -- This flag is set in an N_Loop_Statement node if the corresponding
1110 -- loop can be determined to be null at compile time. This is used to
1111 -- suppress any warnings that would otherwise be issued inside the
1112 -- loop since they are probably not useful.
1114 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1115 -- A flag present only in N_Op_Expon nodes. It is set when the
1116 -- exponentiation is of the forma 2 ** N, where the type of N is
1117 -- an unsigned integral subtype whose size does not exceed the size
1118 -- of Standard_Integer (i.e. a type that can be safely converted to
1119 -- Natural), and the exponentiation appears as the right operand of
1120 -- an integer multiplication or an integer division where the dividend
1121 -- is unsigned. It is also required that overflow checking is off for
1122 -- both the exponentiation and the multiply/divide node. If this set
1123 -- of conditions holds, and the flag is set, then the division or
1124 -- multiplication can be (and is) converted to a shift.
1126 -- Is_Overloaded (Flag5-Sem)
1127 -- A flag present in all expression nodes. Used temporarily during
1128 -- overloading determination. The setting of this flag is not
1129 -- relevant once overloading analysis is complete.
1131 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1132 -- A flag set in a Subprogram_Body block to indicate that it is the
1133 -- implemenation of a protected subprogram. Such a body needs a
1134 -- cleanup handler to make sure that the associated protected object
1135 -- is unlocked when the subprogram completes.
1137 -- Is_Static_Expression (Flag6-Sem)
1138 -- Indicates that an expression is a static expression (RM 4.9). See
1139 -- spec of package Sem_Eval for full details on the use of this flag.
1141 -- Is_Subprogram_Descriptor (Flag16-Sem)
1142 -- Present in N_Object_Declaration, and set only for the object
1143 -- declaration generated for a subprogram descriptor in fast exception
1144 -- mode. See Exp_Ch11 for details of use.
1146 -- Is_Task_Allocation_Block (Flag6-Sem)
1147 -- A flag set in a Block_Statement node to indicate that it is the
1148 -- expansion of a task allocator, or the allocator of an object
1149 -- containing tasks. Such a block requires a cleanup handler to call
1150 -- Expunge_Unactivted_Tasks to complete any tasks that have been
1151 -- allocated but not activated when the allocator completes abnormally.
1153 -- Is_Task_Master (Flag5-Sem)
1154 -- A flag set in a Subprogram_Body, Block_Statement or Task_Body node
1155 -- to indicate that the construct is a task master (i.e. has declared
1156 -- tasks or declares an access to a task type).
1158 -- Itype (Node1-Sem)
1159 -- Used in N_Itype_Reference node to reference an itype for which it
1160 -- is important to ensure that it is defined. See description of this
1161 -- node for further details.
1163 -- Kill_Range_Check (Flag11-Sem)
1164 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
1165 -- result should not be subjected to range checks. This is used for
1166 -- the implementation of Normalize_Scalars.
1168 -- Label_Construct (Node2-Sem)
1169 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
1170 -- N_Block_Statement or N_Loop_Statement node to which the label
1171 -- declaration applies. This is not currently used in the compiler
1172 -- itself, but it is useful in the implementation of ASIS queries.
1174 -- Library_Unit (Node4-Sem)
1175 -- In a stub node, the Library_Unit field points to the compilation unit
1176 -- node of the corresponding subunit.
1178 -- In a with clause node, the Library_Unit field points to the spec
1179 -- of the with'ed unit.
1181 -- In a compilation unit node, the use of this field depends on
1184 -- For a subprogram body, the Library_Unit field points to the
1185 -- compilation unit node of the corresponding spec, unless
1186 -- Acts_As_Spec is set, in which case it points to itself.
1188 -- For a package body, the Library_Unit field points to the
1189 -- compilation unit node of the corresponding spec.
1191 -- For a subprogram spec to which pragma Inline applies, the
1192 -- Library_Unit field points to the compilation unit node of
1193 -- the corresponding body, if inlining is active.
1195 -- For a generic declaration, the Library_Unit field points
1196 -- to the compilation unit node of the corresponding generic body.
1198 -- For a subunit, the Library_Unit field points to the compilation
1199 -- unit node of the parent body.
1201 -- Note that this field is not used to hold the parent pointer for a
1202 -- child unit (which might in any case need to use it for some other
1203 -- purpose as described above). Instead for a child unit, implicit
1204 -- with's are generated for all parents.
1206 -- Loop_Actions (List2-Sem)
1207 -- A list present in Component_Association nodes in array aggregates.
1208 -- Used to collect actions that must be executed within the loop because
1209 -- they may need to be evaluated anew each time through.
1211 -- Limited_View_Installed (Flag18-Sem)
1212 -- Present in With_Clauses and in package specifications. If set on a
1213 -- with_clause, it indicates that this clause has created the current
1214 -- limited view of the designated package. On a package specification,
1215 -- it indicates that the limited view has already been created because
1216 -- the package is mentioned in a limited_with_clause in the closure of
1217 -- the unit being compiled.
1219 -- Must_Be_Byte_Aligned (Flag14-Sem)
1220 -- This flag is present in N_Attribute_Reference nodes. It can be set
1221 -- only for the Address and Unrestricted_Access attributes. If set it
1222 -- means that the object for which the address/access is given must be
1223 -- on a byte (more accurately a storage unit) boundary. If necessary,
1224 -- a copy of the object is to be made before taking the address (this
1225 -- copy is in the current scope on the stack frame). This is used for
1226 -- certain cases of code generated by the expander that passes
1227 -- parameters by address.
1229 -- The reason the copy is not made by the front end is that the back
1230 -- end has more information about type layout and may be able to (but
1231 -- is not guaranteed to) prevent making unnecessary copies.
1233 -- Must_Not_Freeze (Flag8-Sem)
1234 -- A flag present in all expression nodes. Normally expressions cause
1235 -- freezing as described in the RM. If this flag is set, then this
1236 -- is inhibited. This is used by the analyzer and expander to label
1237 -- nodes that are created by semantic analysis or expansion and which
1238 -- must not cause freezing even though they normally would. This flag
1239 -- is also present in an N_Subtype_Indication node, since we also use
1240 -- these in calls to Freeze_Expression.
1242 -- Next_Entity (Node2-Sem)
1243 -- Present in defining identifiers, defining character literals and
1244 -- defining operator symbols (i.e. in all entities). The entities of
1245 -- a scope are chained, and this field is used as the forward pointer
1246 -- for this list. See Einfo for further details.
1248 -- Next_Named_Actual (Node4-Sem)
1249 -- Present in parameter association node. Set during semantic
1250 -- analysis to point to the next named parameter, where parameters
1251 -- are ordered by declaration order (as opposed to the actual order
1252 -- in the call, which may be different due to named associations).
1253 -- Not that this field points to the explicit actual parameter itself,
1254 -- not to the N_Parameter_Association node (its parent).
1256 -- Next_Rep_Item (Node4-Sem)
1257 -- Present in pragma nodes and attribute definition nodes. Used to
1258 -- link representation items that apply to an entity. See description
1259 -- of First_Rep_Item field in Einfo for full details.
1261 -- Next_Use_Clause (Node3-Sem)
1262 -- While use clauses are active during semantic processing, they
1263 -- are chained from the scope stack entry, using Next_Use_Clause
1264 -- as a link pointer, with Empty marking the end of the list. The
1265 -- head pointer is in the scope stack entry (First_Use_Clause). At
1266 -- the end of semantic processing (i.e. when Gigi sees the tree,
1267 -- the contents of this field is undefined and should not be read).
1269 -- No_Ctrl_Actions (Flag7-Sem)
1270 -- Present in N_Assignment_Statement to indicate that no finalize nor
1271 -- nor adjust should take place on this assignment eventhough the rhs
1272 -- is controlled. This is used in init procs and aggregate expansions
1273 -- where the generated assignments are more initialisations than real
1276 -- No_Elaboration_Check (Flag14-Sem)
1277 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
1278 -- that no elaboration check is needed on the call, because it appears
1279 -- in the context of a local Suppress pragma. This is used on calls
1280 -- within task bodies, where the actual elaboration checks are applied
1281 -- after analysis, when the local scope stack is not present.
1283 -- No_Entities_Ref_In_Spec (Flag8-Sem)
1284 -- Present in N_With_Clause nodes. Set if the with clause is on the
1285 -- package or subprogram spec where the main unit is the corresponding
1286 -- body, and no entities of the with'ed unit are referenced by the spec
1287 -- (an entity may still be referenced in the body, so this flag is used
1288 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
1291 -- No_Initialization (Flag13-Sem)
1292 -- Present in N_Object_Declaration & N_Allocator to indicate
1293 -- that the object must not be initialized (by Initialize or a
1294 -- call to an init proc). This is needed for controlled aggregates.
1295 -- When the Object declaration has an expression, this flag means
1296 -- that this expression should not be taken into account (needed
1297 -- for in place initialization with aggregates)
1299 -- No_Truncation (Flag17-Sem)
1300 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
1301 -- only if the RM_Size of the source is greater than the RM_Size of the
1302 -- target for scalar operands. Normally in such a case we truncate some
1303 -- higher order bits of the source, and then sign/zero extend the result
1304 -- to form the output value. But if this flag is set, then we do not do
1305 -- any truncation, so for example, if an 8 bit input is converted to a
1306 -- 5 bit result which is in fact stored in 8 bits, then the high order
1307 -- three bits of the target result will be copied from the source. This
1308 -- is used for properly setting out of range values for use by pragmas
1309 -- Initialize_Scalars and Normalize_Scalars.
1311 -- OK_For_Stream (Flag4-Sem)
1312 -- Present in N_Attribute_Definition clauses for stream attributes. If
1313 -- set, indicates that the attribute is permitted even though the type
1314 -- involved is a limited type. In the case of a protected type, the
1315 -- result is to stream all components (including discriminants) in
1316 -- lexical order. For other limited types, the effect is simply to
1317 -- use the corresponding stream routine for the full type. This flag
1318 -- is used for internally generated code, where the streaming of these
1319 -- types is required, even though not normally allowed by the language.
1321 -- Original_Discriminant (Node2-Sem)
1322 -- Present in identifiers. Used in references to discriminants that
1323 -- appear in generic units. Because the names of the discriminants
1324 -- may be different in an instance, we use this field to recover the
1325 -- position of the discriminant in the original type, and replace it
1326 -- with the discriminant at the same position in the instantiated type.
1328 -- Original_Entity (Node2-Sem)
1329 -- Present in numeric literals. Used to denote the named number that
1330 -- has been constant-folded into the given literal. If literal is from
1331 -- source, or the result of some other constant-folding operation, then
1332 -- Original_Entity is empty. This field is needed to handle properly
1333 -- named numbers in generic units, where the Associated_Node field
1334 -- interferes with the Entity field, making it impossible to preserve
1335 -- the original entity at the point of instantiation (ASIS problem).
1337 -- Others_Discrete_Choices (List1-Sem)
1338 -- When a case statement or variant is analyzed, the semantic checks
1339 -- determine the actual list of choices that correspond to an others
1340 -- choice. This list is materialized for later use by the expander
1341 -- and the Others_Discrete_Choices field of an N_Others_Choice node
1342 -- points to this materialized list of choices, which is in standard
1343 -- format for a list of discrete choices, except that of course it
1344 -- cannot contain an N_Others_Choice entry.
1346 -- Parameter_List_Truncated (Flag17-Sem)
1347 -- Present in N_Function_Call and N_Procedure_Call_Statement nodes.
1348 -- Set (for OpenVMS ports of GNAT only) if the parameter list is
1349 -- truncated as a result of a First_Optional_Parameter specification
1350 -- in an Import_Function, Import_Procedure, or Import_Valued_Procedure
1351 -- pragma. The truncation is done by the expander by removing trailing
1352 -- parameters from the argument list, in accordance with the set of
1353 -- rules allowing such parameter removal. In particular, parameters
1354 -- can be removed working from the end of the parameter list backwards
1355 -- up to and including the entry designated by First_Optional_Parameter
1356 -- in the Import pragma. Parameters can be removed if they are implicit
1357 -- and the default value is a known-at-compile-time value, including
1358 -- the use of the Null_Parameter attribute, or if explicit parameter
1359 -- values are present that match the corresponding defaults.
1361 -- Parent_Spec (Node4-Sem)
1362 -- For a library unit that is a child unit spec (package or subprogram
1363 -- declaration, generic declaration or instantiation, or library level
1364 -- rename, this field points to the compilation unit node for the parent
1365 -- package specification. This field is Empty for library bodies (the
1366 -- parent spec in this case can be found from the corresponding spec).
1368 -- Present_Expr (Uint3-Sem)
1369 -- Present in an N_Variant node. This has a meaningful value only after
1370 -- Gigi has back annotated the tree with representation information.
1371 -- At this point, it contains a reference to a gcc expression that
1372 -- depends on the values of one or more discriminants. Give a set of
1373 -- discriminant values, this expression evaluates to False (zero) if
1374 -- variant is not present, and True (non-zero) if it is present. See
1375 -- unit Repinfo for further details on gigi back annotation. This
1376 -- field is used during ASIS processing (data decomposition annex)
1377 -- to determine if a field is present or not.
1379 -- Print_In_Hex (Flag13-Sem)
1380 -- Set on an N_Integer_Literal node to indicate that the value should
1381 -- be printed in hexadecimal in the sprint listing. Has no effect on
1382 -- legality or semantics of program, only on the displayed output.
1383 -- This is used to clarify output from the packed array cases.
1385 -- Procedure_To_Call (Node4-Sem)
1386 -- Present in N_Allocator. N_Free_Statement, and N_Return_Statement
1387 -- nodes. References the entity for the declaration of the procedure
1388 -- to be called to accomplish the required operation (i.e. for the
1389 -- Allocate procedure in the case of N_Allocator and N_Return_Statement
1390 -- (for allocating the return value), and for the Deallocate procedure
1391 -- in the case of N_Free_Statement.
1393 -- Raises_Constraint_Error (Flag7-Sem)
1394 -- Set on an expression whose evaluation will definitely fail a
1395 -- constraint error check. In the case of static expressions, this
1396 -- flag must be set accurately (and if it is set, the expression is
1397 -- typically illegal unless it appears as a non-elaborated branch of
1398 -- a short-circuit form). For a non-static expression, this flag may
1399 -- be set whenever an expression (e.g. an aggregate) is known to raise
1400 -- constraint error. If set, the expression definitely will raise CE
1401 -- if elaborated at runtime. If not set, the expression may or may
1402 -- not raise CE. In other words, on static expressions, the flag is
1403 -- set accurately, on non-static expressions it is set conservatively.
1405 -- Redundant_Use (Flag13-Sem)
1406 -- A flag present in nodes that can appear as an operand in a use
1407 -- clause or use type clause (identifiers, expanded names, attribute
1408 -- references). Set to indicate that a use is redundant (and therefore
1409 -- need not be undone on scope exit).
1411 -- Return_Type (Node2-Sem)
1412 -- Present in N_Return_Statement node. For a procedure, this is set
1413 -- to Standard_Void_Type. For a function it references the entity
1414 -- for the returned type.
1416 -- Rounded_Result (Flag18-Sem)
1417 -- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
1418 -- Used in the fixed-point cases to indicate that the result must be
1419 -- rounded as a result of the use of the 'Round attribute. Also used
1420 -- for integer N_Op_Divide nodes to indicate that the result should
1421 -- be rounded to the nearest integer (breaking ties away from zero),
1422 -- rather than truncated towards zero as usual. These rounded integer
1423 -- operations are the result of expansion of rounded fixed-point
1424 -- divide, conersion and multiplication operations.
1426 -- Scope (Node3-Sem)
1427 -- Present in defining identifiers, defining character literals and
1428 -- defining operator symbols (i.e. in all entities). The entities of
1429 -- a scope all use this field to reference the corresponding scope
1430 -- entity. See Einfo for further details.
1432 -- Shift_Count_OK (Flag4-Sem)
1433 -- A flag present in shift nodes to indicate that the shift count is
1434 -- known to be in range, i.e. is in the range from zero to word length
1435 -- minus one. If this flag is not set, then the shift count may be
1436 -- outside this range, i.e. larger than the word length, and the code
1437 -- must ensure that such shift counts give the appropriate result.
1439 -- Source_Type (Node1-Sem)
1440 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1441 -- source type entity for the unchecked conversion instantiation
1442 -- which gigi must do size validation for.
1444 -- Static_Processing_OK (Flag4-Sem)
1445 -- Present in N_Aggregate nodes. When the Compile_Time_Known_Aggregate
1446 -- flag is set, the full value of the aggregate can be determined at
1447 -- compile time and the aggregate can be passed as is to the back-end.
1448 -- In this event it is irrelevant whether this flag is set or not.
1449 -- However, if the Compile_Time_Known_Aggregate flag is not set but
1450 -- Static_Processing_OK is set, the aggregate can (but need not) be
1451 -- converted into a compile time known aggregate by the expander.
1452 -- See Sem_Aggr for the specific conditions under which an aggregate
1453 -- has its Static_Processing_OK flag set.
1455 -- Storage_Pool (Node1-Sem)
1456 -- Present in N_Allocator, N_Free_Statement and N_Return_Statement
1457 -- nodes. References the entity for the storage pool to be used for
1458 -- the allocate or free call or for the allocation of the returned
1459 -- value from a function. Empty indicates that the global default
1460 -- default pool is to be used. Note that in the case of a return
1461 -- statement, this field is set only if the function returns a
1462 -- value of a type whose size is not known at compile time on the
1463 -- secondary stack. It is never set on targets for which the target
1464 -- parameter Targparm.Functions_Return_By_DSP_On_Target is True.
1466 -- Target_Type (Node2-Sem)
1467 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1468 -- target type entity for the unchecked conversion instantiation
1469 -- which gigi must do size validation for.
1471 -- Task_Body_Procedure (Node2-Sem)
1472 -- Present in task type declaration nodes. Points to the entity for
1473 -- the task body procedure (as further described in Exp_Ch9, task
1474 -- bodies are expanded into procedures). A convenient function to
1475 -- retrieve this field is Sem_Util.Get_Task_Body_Procedure.
1477 -- Then_Actions (List3-Sem)
1478 -- This field is present in conditional expression nodes. During code
1479 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1480 -- actions at an appropriate place in the tree to get elaborated at the
1481 -- right time. For conditional expressions, we have to be sure that the
1482 -- actions for the Then branch are only elaborated if the condition is
1483 -- True. The Then_Actions field is used as a temporary parking place
1484 -- for these actions. The final tree is always rewritten to eliminate
1485 -- the need for this field, so in the tree passed to Gigi, this field
1486 -- is always set to No_List.
1488 -- Treat_Fixed_As_Integer (Flag14-Sem)
1489 -- This flag appears in operator nodes for divide, multiply, mod and
1490 -- rem on fixed-point operands. It indicates that the operands are
1491 -- to be treated as integer values, ignoring small values. This flag
1492 -- is only set as a result of expansion of fixed-point operations.
1493 -- Typically a fixed-point multplication in the source generates
1494 -- subsidiary multiplication and division operations that work with
1495 -- the underlying integer values and have this flag set. Note that
1496 -- this flag is not needed on other arithmetic operations (add, neg,
1497 -- subtract etc) since in these cases it is always the case that fixed
1498 -- is treated as integer. The Etype field MUST be set if this flag
1499 -- is set. The analyzer knows to leave such nodes alone, and whoever
1500 -- makes them must set the correct Etype value.
1502 -- TSS_Elist (Elist3-Sem)
1503 -- Present in N_Freeze_Entity nodes. Holds an element list containing
1504 -- entries for each TSS (type support subprogram) associated with the
1505 -- frozen type. The elements of the list are the entities for the
1506 -- subprograms (see package Exp_TSS for further details). Set to
1507 -- No_Elist if there are no type support subprograms for the type
1508 -- or if the freeze node is not for a type.
1510 -- Unreferenced_In_Spec (Flag7-Sem)
1511 -- Present in N_With_Clause nodes. Set if the with clause is on the
1512 -- package or subprogram spec where the main unit is the corresponding
1513 -- body, and is not referenced by the spec (it may still be referenced
1514 -- by the body, so this flag is used to generate the proper message
1515 -- (see Sem_Util.Check_Unused_Withs for details)
1517 -- Was_Originally_Stub (Flag13-Sem)
1518 -- This flag is set in the node for a proper body that replaces a
1519 -- stub. During the analysis procedure, stubs in some situations
1520 -- get rewritten by the corresponding bodies, and we set this flag
1521 -- to remember that this happened. Note that it is not good enough
1522 -- to rely on the use of Original_Tree here because of the case of
1523 -- nested instantiations where the substituted node can be copied.
1525 -- Zero_Cost_Handling (Flag5-Sem)
1526 -- This flag is set in all handled sequence of statement and exception
1527 -- handler nodes if eceptions are to be handled using the zero-cost
1528 -- mechanism (see Ada.Exceptions and System.Exceptions in files
1529 -- a-except.ads/adb and s-except.ads for full details). What gigi
1530 -- needs to do for such a handler is simply to put the code in the
1531 -- handler somewhere. The front end has generated all necessary labels.
1533 --------------------------------------------------
1534 -- Note on Use of End_Label and End_Span Fields --
1535 --------------------------------------------------
1537 -- Several constructs have end lines:
1539 -- Loop Statement end loop [loop_IDENTIFIER];
1540 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
1541 -- Task Definition end [task_IDENTIFIER]
1542 -- Protected Definition end [protected_IDENTIFIER]
1543 -- Protected Body end [protected_IDENTIFIER]
1545 -- Block Statement end [block_IDENTIFIER];
1546 -- Subprogram Body end [DESIGNATOR];
1547 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
1548 -- Task Body end [task_IDENTIFIER];
1549 -- Accept Statement end [entry_IDENTIFIER]];
1550 -- Entry Body end [entry_IDENTIFIER];
1552 -- If Statement end if;
1553 -- Case Statement end case;
1555 -- Record Definition end record;
1556 -- Enumeration Definition );
1558 -- The End_Label and End_Span fields are used to mark the locations
1559 -- of these lines, and also keep track of the label in the case where
1560 -- a label is present.
1562 -- For the first group above, the End_Label field of the corresponding
1563 -- node is used to point to the label identifier. In the case where
1564 -- there is no label in the source, the parser supplies a dummy
1565 -- identifier (with Comes_From_Source set to False), and the Sloc
1566 -- of this dummy identifier marks the location of the token following
1569 -- For the second group, the use of End_Label is similar, but the
1570 -- End_Label is found in the N_Handled_Sequence_Of_Statements node.
1571 -- This is done simply because in some cases there is no room in
1574 -- For the third group, there is never any label, and instead of
1575 -- using End_Label, we use the End_Span field which gives the
1576 -- location of the token following END, relative to the starting
1577 -- Sloc of the construct, i.e. add Sloc (Node) + End_Span (Node)
1578 -- to get the Sloc of the IF or CASE following the End_Label.
1580 -- The record definition case is handled specially, we treat it
1581 -- as though it required an optional label which is never present,
1582 -- and so the parser always builds a dummy identifier with Comes
1583 -- From Source set False. The reason we do this, rather than using
1584 -- End_Span in this case, is that we want to generate a cross-ref
1585 -- entry for the end of a record, since it represents a scope for
1586 -- name declaration purposes.
1588 -- The enumeration definition case is handled in an exactly similar
1589 -- manner, building a dummy identifier to get a cross-reference.
1591 -- Note: the reason we store the difference as a Uint, instead of
1592 -- storing the Source_Ptr value directly, is that Source_Ptr values
1593 -- cannot be distinguished from other types of values, and we count
1594 -- on all general use fields being self describing. To make things
1595 -- easier for clients, note that we provide function End_Location,
1596 -- and procedure Set_End_Location to allow access to the logical
1597 -- value (which is the Source_Ptr value for the end token).
1599 ---------------------
1600 -- Syntactic Nodes --
1601 ---------------------
1603 ---------------------
1604 -- 2.3 Identifier --
1605 ---------------------
1607 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
1608 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
1610 -- An IDENTIFIER shall not be a reserved word
1612 -- In the Ada grammar identifiers are the bottom level tokens which
1613 -- have very few semantics. Actual program identifiers are direct
1614 -- names. If we were being 100% honest with the grammar, then we would
1615 -- have a node called N_Direct_Name which would point to an identifier.
1616 -- However, that's too many extra nodes, so we just use the N_Identifier
1617 -- node directly as a direct name, and it contains the expression fields
1618 -- and Entity field that correspond to its use as a direct name. In
1619 -- those few cases where identifiers appear in contexts where they are
1620 -- not direct names (pragmas, pragma argument associations, attribute
1621 -- references and attribute definition clauses), the Chars field of the
1622 -- node contains the Name_Id for the identifier name.
1624 -- Note: in GNAT, a reserved word can be treated as an identifier
1625 -- in two cases. First, an incorrect use of a reserved word as an
1626 -- identifier is diagnosed and then treated as a normal identifier.
1627 -- Second, an attribute designator of the form of a reserved word
1628 -- (access, delta, digits, range) is treated as an identifier.
1630 -- Note: The set of letters that is permitted in an identifier depends
1631 -- on the character set in use. See package Csets for full details.
1634 -- Sloc points to identifier
1635 -- Chars (Name1) contains the Name_Id for the identifier
1636 -- Entity (Node4-Sem)
1637 -- Associated_Node (Node4-Sem)
1638 -- Original_Discriminant (Node2-Sem)
1639 -- Redundant_Use (Flag13-Sem)
1640 -- Has_Private_View (Flag11-Sem) (set in generic units)
1641 -- plus fields for expression
1643 --------------------------
1644 -- 2.4 Numeric Literal --
1645 --------------------------
1647 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
1649 ----------------------------
1650 -- 2.4.1 Decimal Literal --
1651 ----------------------------
1653 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
1655 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
1657 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
1659 -- Decimal literals appear in the tree as either integer literal nodes
1660 -- or real literal nodes, depending on whether a period is present.
1662 -- Note: literal nodes appear as a result of direct use of literals
1663 -- in the source program, and also as the result of evaluating
1664 -- expressions at compile time. In the latter case, it is possible
1665 -- to construct real literals that have no syntactic representation
1666 -- using the standard literal format. Such literals are listed by
1667 -- Sprint using the notation [numerator / denominator].
1669 -- N_Integer_Literal
1670 -- Sloc points to literal
1671 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1672 -- has been constant-folded into its literal value.
1673 -- Intval (Uint3) contains integer value of literal
1674 -- plus fields for expression
1675 -- Print_In_Hex (Flag13-Sem)
1678 -- Sloc points to literal
1679 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1680 -- has been constant-folded into its literal value.
1681 -- Realval (Ureal3) contains real value of literal
1682 -- Corresponding_Integer_Value (Uint4-Sem)
1683 -- Is_Machine_Number (Flag11-Sem)
1684 -- plus fields for expression
1686 --------------------------
1687 -- 2.4.2 Based Literal --
1688 --------------------------
1690 -- BASED_LITERAL ::=
1691 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
1695 -- BASED_NUMERAL ::=
1696 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
1698 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
1700 -- Based literals appear in the tree as either integer literal nodes
1701 -- or real literal nodes, depending on whether a period is present.
1703 ----------------------------
1704 -- 2.5 Character Literal --
1705 ----------------------------
1707 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
1709 -- N_Character_Literal
1710 -- Sloc points to literal
1711 -- Chars (Name1) contains the Name_Id for the identifier
1712 -- Char_Literal_Value (Char_Code2) contains the literal value
1713 -- Entity (Node4-Sem)
1714 -- Associated_Node (Node4-Sem)
1715 -- Has_Private_View (Flag11-Sem) set in generic units.
1716 -- plus fields for expression
1718 -- Note: the Entity field will be missing (and set to Empty) for
1719 -- character literals whose type is Standard.Wide_Character or
1720 -- Standard.Character or a type derived from one of these two.
1721 -- In this case the character literal stands for its own coding.
1722 -- The reason we take this irregular short cut is to avoid the
1723 -- need to build lots of junk defining character literal nodes.
1725 -------------------------
1726 -- 2.6 String Literal --
1727 -------------------------
1729 -- STRING LITERAL ::= "{STRING_ELEMENT}"
1731 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
1732 -- single GRAPHIC_CHARACTER other than a quotation mark.
1735 -- Sloc points to literal
1736 -- Strval (Str3) contains Id of string value
1737 -- Has_Wide_Character (Flag11-Sem)
1738 -- plus fields for expression
1744 -- A COMMENT starts with two adjacent hyphens and extends up to the
1745 -- end of the line. A COMMENT may appear on any line of a program.
1747 -- Comments are skipped by the scanner and do not appear in the tree.
1748 -- It is possible to reconstruct the position of comments with respect
1749 -- to the elements of the tree by using the source position (Sloc)
1750 -- pointers that appear in every tree node.
1756 -- PRAGMA ::= pragma IDENTIFIER
1757 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
1759 -- Note that a pragma may appear in the tree anywhere a declaration
1760 -- or a statement may appear, as well as in some other situations
1761 -- which are explicitly documented.
1764 -- Sloc points to PRAGMA
1765 -- Chars (Name1) identifier name from pragma identifier
1766 -- Pragma_Argument_Associations (List2) (set to No_List if none)
1767 -- Debug_Statement (Node3) (set to Empty if not Debug, Assert)
1768 -- Next_Rep_Item (Node4-Sem)
1770 --------------------------------------
1771 -- 2.8 Pragma Argument Association --
1772 --------------------------------------
1774 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
1775 -- [pragma_argument_IDENTIFIER =>] NAME
1776 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
1778 -- N_Pragma_Argument_Association
1779 -- Sloc points to first token in association
1780 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
1781 -- Expression (Node3)
1783 ------------------------
1784 -- 2.9 Reserved Word --
1785 ------------------------
1787 -- Reserved words are parsed by the scanner, and returned as the
1788 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
1790 ----------------------------
1791 -- 3.1 Basic Declaration --
1792 ----------------------------
1794 -- BASIC_DECLARATION ::=
1795 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
1796 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
1797 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
1798 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
1799 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
1800 -- | GENERIC_INSTANTIATION
1802 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
1803 -- see further description in section on semantic nodes.
1805 -- Also, in the tree that is constructed, a pragma may appear
1806 -- anywhere that a declaration may appear.
1808 ------------------------------
1809 -- 3.1 Defining Identifier --
1810 ------------------------------
1812 -- DEFINING_IDENTIFIER ::= IDENTIFIER
1814 -- A defining identifier is an entity, which has additional fields
1815 -- depending on the setting of the Ekind field. These additional
1816 -- fields are defined (and access subprograms declared) in package
1819 -- Note: N_Defining_Identifier is an extended node whose fields are
1820 -- deliberate layed out to match the layout of fields in an ordinary
1821 -- N_Identifier node allowing for easy alteration of an identifier
1822 -- node into a defining identifier node. For details, see procedure
1823 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
1825 -- N_Defining_Identifier
1826 -- Sloc points to identifier
1827 -- Chars (Name1) contains the Name_Id for the identifier
1828 -- Next_Entity (Node2-Sem)
1829 -- Scope (Node3-Sem)
1830 -- Etype (Node5-Sem)
1832 -----------------------------
1833 -- 3.2.1 Type Declaration --
1834 -----------------------------
1836 -- TYPE_DECLARATION ::=
1837 -- FULL_TYPE_DECLARATION
1838 -- | INCOMPLETE_TYPE_DECLARATION
1839 -- | PRIVATE_TYPE_DECLARATION
1840 -- | PRIVATE_EXTENSION_DECLARATION
1842 ----------------------------------
1843 -- 3.2.1 Full Type Declaration --
1844 ----------------------------------
1846 -- FULL_TYPE_DECLARATION ::=
1847 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
1848 -- is TYPE_DEFINITION;
1849 -- | TASK_TYPE_DECLARATION
1850 -- | PROTECTED_TYPE_DECLARATION
1852 -- The full type declaration node is used only for the first case. The
1853 -- second case (concurrent type declaration), is represented directly
1854 -- by a task type declaration or a protected type declaration.
1856 -- N_Full_Type_Declaration
1857 -- Sloc points to TYPE
1858 -- Defining_Identifier (Node1)
1859 -- Discriminant_Specifications (List4) (set to No_List if none)
1860 -- Type_Definition (Node3)
1861 -- Discr_Check_Funcs_Built (Flag11-Sem)
1863 ----------------------------
1864 -- 3.2.1 Type Definition --
1865 ----------------------------
1867 -- TYPE_DEFINITION ::=
1868 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
1869 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
1870 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
1871 -- | DERIVED_TYPE_DEFINITION
1873 --------------------------------
1874 -- 3.2.2 Subtype Declaration --
1875 --------------------------------
1877 -- SUBTYPE_DECLARATION ::=
1878 -- subtype DEFINING_IDENTIFIER is SUBTYPE_INDICATION;
1880 -- The subtype indication field is set to Empty for subtypes
1881 -- declared in package Standard (Positive, Natural).
1883 -- N_Subtype_Declaration
1884 -- Sloc points to SUBTYPE
1885 -- Defining_Identifier (Node1)
1886 -- Subtype_Indication (Node5)
1887 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
1888 -- Exception_Junk (Flag11-Sem)
1890 -------------------------------
1891 -- 3.2.2 Subtype Indication --
1892 -------------------------------
1894 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
1896 -- Note: if no constraint is present, the subtype indication appears
1897 -- directly in the tree as a subtype mark. The N_Subtype_Indication
1898 -- node is used only if a constraint is present.
1900 -- Note: the reason that this node has expression fields is that a
1901 -- subtype indication can appear as an operand of a membership test.
1903 -- N_Subtype_Indication
1904 -- Sloc points to first token of subtype mark
1905 -- Subtype_Mark (Node4)
1906 -- Constraint (Node3)
1907 -- Etype (Node5-Sem)
1908 -- Must_Not_Freeze (Flag8-Sem)
1910 -- Note: Etype is a copy of the Etype field of the Subtype_Mark. The
1911 -- reason for this redundancy is so that in a list of array index types,
1912 -- the Etype can be uniformly accessed to determine the subscript type.
1913 -- This means that no Itype is constructed for the actual subtype that
1914 -- is created by the subtype indication. If such an Itype is required,
1915 -- it is constructed in the context in which the indication appears.
1917 -------------------------
1918 -- 3.2.2 Subtype Mark --
1919 -------------------------
1921 -- SUBTYPE_MARK ::= subtype_NAME
1923 -----------------------
1924 -- 3.2.2 Constraint --
1925 -----------------------
1927 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
1929 ------------------------------
1930 -- 3.2.2 Scalar Constraint --
1931 ------------------------------
1933 -- SCALAR_CONSTRAINT ::=
1934 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
1936 ---------------------------------
1937 -- 3.2.2 Composite Constraint --
1938 ---------------------------------
1940 -- COMPOSITE_CONSTRAINT ::=
1941 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
1943 -------------------------------
1944 -- 3.3.1 Object Declaration --
1945 -------------------------------
1947 -- OBJECT_DECLARATION ::=
1948 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1949 -- SUBTYPE_INDICATION [:= EXPRESSION];
1950 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1951 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION];
1952 -- | SINGLE_TASK_DECLARATION
1953 -- | SINGLE_PROTECTED_DECLARATION
1955 -- Note: aliased is not permitted in Ada 83 mode
1957 -- The N_Object_Declaration node is only for the first two cases.
1958 -- Single task declaration is handled by P_Task (9.1)
1959 -- Single protected declaration is handled by P_protected (9.5)
1961 -- Although the syntax allows multiple identifiers in the list, the
1962 -- semantics is as though successive declarations were given with
1963 -- identical type definition and expression components. To simplify
1964 -- semantic processing, the parser represents a multiple declaration
1965 -- case as a sequence of single declarations, using the More_Ids and
1966 -- Prev_Ids flags to preserve the original source form as described
1967 -- in the section on "Handling of Defining Identifier Lists".
1969 -- Note: if a range check is required for the initialization
1970 -- expression then the Do_Range_Check flag is set in the Expression,
1971 -- with the check being done against the type given by the object
1972 -- definition, which is also the Etype of the defining identifier.
1974 -- Note: the contents of the Expression field must be ignored (i.e.
1975 -- treated as though it were Empty) if No_Initialization is set True.
1977 -- Note: the back end places some restrictions on the form of the
1978 -- Expression field. If the object being declared is Atomic, then
1979 -- the Expression may not have the form of an aggregate (since this
1980 -- might cause the back end to generate separate assignments). It
1981 -- also cannot be a reference to an object marked as a true constant
1982 -- (Is_True_Constant flag set), where the object is itself initalized
1983 -- with an aggregate. If necessary the front end must generate an
1984 -- extra temporary (with Is_True_Constant set False), and initialize
1985 -- this temporary as required (the temporary itself is not atomic).
1987 -- N_Object_Declaration
1988 -- Sloc points to first identifier
1989 -- Defining_Identifier (Node1)
1990 -- Aliased_Present (Flag4) set if ALIASED appears
1991 -- Constant_Present (Flag17) set if CONSTANT appears
1992 -- Object_Definition (Node4) subtype indication/array type definition
1993 -- Expression (Node3) (set to Empty if not present)
1994 -- Handler_List_Entry (Node2-Sem)
1995 -- Corresponding_Generic_Association (Node5-Sem)
1996 -- More_Ids (Flag5) (set to False if no more identifiers in list)
1997 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
1998 -- No_Initialization (Flag13-Sem)
1999 -- Assignment_OK (Flag15-Sem)
2000 -- Exception_Junk (Flag11-Sem)
2001 -- Delay_Finalize_Attach (Flag14-Sem)
2002 -- Is_Subprogram_Descriptor (Flag16-Sem)
2004 -------------------------------------
2005 -- 3.3.1 Defining Identifier List --
2006 -------------------------------------
2008 -- DEFINING_IDENTIFIER_LIST ::=
2009 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
2011 -------------------------------
2012 -- 3.3.2 Number Declaration --
2013 -------------------------------
2015 -- NUMBER_DECLARATION ::=
2016 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
2018 -- Although the syntax allows multiple identifiers in the list, the
2019 -- semantics is as though successive declarations were given with
2020 -- identical expressions. To simplify semantic processing, the parser
2021 -- represents a multiple declaration case as a sequence of single
2022 -- declarations, using the More_Ids and Prev_Ids flags to preserve
2023 -- the original source form as described in the section on "Handling
2024 -- of Defining Identifier Lists".
2026 -- N_Number_Declaration
2027 -- Sloc points to first identifier
2028 -- Defining_Identifier (Node1)
2029 -- Expression (Node3)
2030 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2031 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2033 ----------------------------------
2034 -- 3.4 Derived Type Definition --
2035 ----------------------------------
2037 -- DERIVED_TYPE_DEFINITION ::=
2038 -- [abstract] new parent_SUBTYPE_INDICATION [RECORD_EXTENSION_PART]
2040 -- Note: ABSTRACT, record extension part not permitted in Ada 83 mode
2042 -- Note: a record extension part is required if ABSTRACT is present
2044 -- N_Derived_Type_Definition
2045 -- Sloc points to NEW
2046 -- Abstract_Present (Flag4)
2047 -- Subtype_Indication (Node5)
2048 -- Record_Extension_Part (Node3) (set to Empty if not present)
2050 ---------------------------
2051 -- 3.5 Range Constraint --
2052 ---------------------------
2054 -- RANGE_CONSTRAINT ::= range RANGE
2056 -- N_Range_Constraint
2057 -- Sloc points to RANGE
2058 -- Range_Expression (Node4)
2065 -- RANGE_ATTRIBUTE_REFERENCE
2066 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
2068 -- Note: the case of a range given as a range attribute reference
2069 -- appears directly in the tree as an attribute reference.
2071 -- Note: the field name for a reference to a range is Range_Expression
2072 -- rather than Range, because range is a reserved keyword in Ada!
2074 -- Note: the reason that this node has expression fields is that a
2075 -- range can appear as an operand of a membership test. The Etype
2076 -- field is the type of the range (we do NOT construct an implicit
2077 -- subtype to represent the range exactly).
2080 -- Sloc points to ..
2081 -- Low_Bound (Node1)
2082 -- High_Bound (Node2)
2083 -- Includes_Infinities (Flag11)
2084 -- plus fields for expression
2086 -- Note: if the range appears in a context, such as a subtype
2087 -- declaration, where range checks are required on one or both of
2088 -- the expression fields, then type conversion nodes are inserted
2089 -- to represent the required checks.
2091 ----------------------------------------
2092 -- 3.5.1 Enumeration Type Definition --
2093 ----------------------------------------
2095 -- ENUMERATION_TYPE_DEFINITION ::=
2096 -- (ENUMERATION_LITERAL_SPECIFICATION
2097 -- {, ENUMERATION_LITERAL_SPECIFICATION})
2099 -- Note: the Literals field in the node described below is null for
2100 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
2101 -- which special processing handles these types as special cases.
2103 -- N_Enumeration_Type_Definition
2104 -- Sloc points to left parenthesis
2105 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
2106 -- End_Label (Node4) (set to Empty if internally generated record)
2108 ----------------------------------------------
2109 -- 3.5.1 Enumeration Literal Specification --
2110 ----------------------------------------------
2112 -- ENUMERATION_LITERAL_SPECIFICATION ::=
2113 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
2115 ---------------------------------------
2116 -- 3.5.1 Defining Character Literal --
2117 ---------------------------------------
2119 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
2121 -- A defining character literal is an entity, which has additional
2122 -- fields depending on the setting of the Ekind field. These
2123 -- additional fields are defined (and access subprograms declared)
2124 -- in package Einfo.
2126 -- Note: N_Defining_Character_Literal is an extended node whose fields
2127 -- are deliberate layed out to match the layout of fields in an ordinary
2128 -- N_Character_Literal node allowing for easy alteration of a character
2129 -- literal node into a defining character literal node. For details, see
2130 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
2132 -- N_Defining_Character_Literal
2133 -- Sloc points to literal
2134 -- Chars (Name1) contains the Name_Id for the identifier
2135 -- Next_Entity (Node2-Sem)
2136 -- Scope (Node3-Sem)
2137 -- Etype (Node5-Sem)
2139 ------------------------------------
2140 -- 3.5.4 Integer Type Definition --
2141 ------------------------------------
2143 -- Note: there is an error in this rule in the latest version of the
2144 -- grammar, so we have retained the old rule pending clarification.
2146 -- INTEGER_TYPE_DEFINITION ::=
2147 -- SIGNED_INTEGER_TYPE_DEFINITION
2148 -- MODULAR_TYPE_DEFINITION
2150 -------------------------------------------
2151 -- 3.5.4 Signed Integer Type Definition --
2152 -------------------------------------------
2154 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
2155 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2157 -- Note: the Low_Bound and High_Bound fields are set to Empty for
2158 -- integer types defined in package Standard.
2160 -- N_Signed_Integer_Type_Definition
2161 -- Sloc points to RANGE
2162 -- Low_Bound (Node1)
2163 -- High_Bound (Node2)
2165 -----------------------------------------
2166 -- 3.5.4 Unsigned Range Specification --
2167 -----------------------------------------
2169 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
2171 -- N_Modular_Type_Definition
2172 -- Sloc points to MOD
2173 -- Expression (Node3)
2175 ---------------------------------
2176 -- 3.5.6 Real Type Definition --
2177 ---------------------------------
2179 -- REAL_TYPE_DEFINITION ::=
2180 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
2182 --------------------------------------
2183 -- 3.5.7 Floating Point Definition --
2184 --------------------------------------
2186 -- FLOATING_POINT_DEFINITION ::=
2187 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
2189 -- Note: The Digits_Expression and Real_Range_Specifications fields
2190 -- are set to Empty for floating-point types declared in Standard.
2192 -- N_Floating_Point_Definition
2193 -- Sloc points to DIGITS
2194 -- Digits_Expression (Node2)
2195 -- Real_Range_Specification (Node4) (set to Empty if not present)
2197 -------------------------------------
2198 -- 3.5.7 Real Range Specification --
2199 -------------------------------------
2201 -- REAL_RANGE_SPECIFICATION ::=
2202 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2204 -- N_Real_Range_Specification
2205 -- Sloc points to RANGE
2206 -- Low_Bound (Node1)
2207 -- High_Bound (Node2)
2209 -----------------------------------
2210 -- 3.5.9 Fixed Point Definition --
2211 -----------------------------------
2213 -- FIXED_POINT_DEFINITION ::=
2214 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
2216 --------------------------------------------
2217 -- 3.5.9 Ordinary Fixed Point Definition --
2218 --------------------------------------------
2220 -- ORDINARY_FIXED_POINT_DEFINITION ::=
2221 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
2223 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2225 -- Note: the Delta_Expression and Real_Range_Specification fields
2226 -- are set to Empty for fixed point types declared in Standard.
2228 -- N_Ordinary_Fixed_Point_Definition
2229 -- Sloc points to DELTA
2230 -- Delta_Expression (Node3)
2231 -- Real_Range_Specification (Node4)
2233 -------------------------------------------
2234 -- 3.5.9 Decimal Fixed Point Definition --
2235 -------------------------------------------
2237 -- DECIMAL_FIXED_POINT_DEFINITION ::=
2238 -- delta static_EXPRESSION
2239 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
2241 -- Note: decimal types are not permitted in Ada 83 mode
2243 -- N_Decimal_Fixed_Point_Definition
2244 -- Sloc points to DELTA
2245 -- Delta_Expression (Node3)
2246 -- Digits_Expression (Node2)
2247 -- Real_Range_Specification (Node4) (set to Empty if not present)
2249 ------------------------------
2250 -- 3.5.9 Digits Constraint --
2251 ------------------------------
2253 -- DIGITS_CONSTRAINT ::=
2254 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
2256 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2257 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
2259 -- N_Digits_Constraint
2260 -- Sloc points to DIGITS
2261 -- Digits_Expression (Node2)
2262 -- Range_Constraint (Node4) (set to Empty if not present)
2264 --------------------------------
2265 -- 3.6 Array Type Definition --
2266 --------------------------------
2268 -- ARRAY_TYPE_DEFINITION ::=
2269 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
2271 -----------------------------------------
2272 -- 3.6 Unconstrained Array Definition --
2273 -----------------------------------------
2275 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
2276 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
2277 -- COMPONENT_DEFINITION
2279 -- Note: dimensionality of array is indicated by number of entries in
2280 -- the Subtype_Marks list, which has one entry for each dimension.
2282 -- N_Unconstrained_Array_Definition
2283 -- Sloc points to ARRAY
2284 -- Subtype_Marks (List2)
2285 -- Component_Definition (Node4)
2287 -----------------------------------
2288 -- 3.6 Index Subtype Definition --
2289 -----------------------------------
2291 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
2293 -- There is no explicit node in the tree for an index subtype
2294 -- definition since the N_Unconstrained_Array_Definition node
2295 -- incorporates the type marks which appear in this context.
2297 ---------------------------------------
2298 -- 3.6 Constrained Array Definition --
2299 ---------------------------------------
2301 -- CONSTRAINED_ARRAY_DEFINITION ::=
2302 -- array (DISCRETE_SUBTYPE_DEFINITION
2303 -- {, DISCRETE_SUBTYPE_DEFINITION})
2304 -- of COMPONENT_DEFINITION
2306 -- Note: dimensionality of array is indicated by number of entries
2307 -- in the Discrete_Subtype_Definitions list, which has one entry
2308 -- for each dimension.
2310 -- N_Constrained_Array_Definition
2311 -- Sloc points to ARRAY
2312 -- Discrete_Subtype_Definitions (List2)
2313 -- Component_Definition (Node4)
2315 --------------------------------------
2316 -- 3.6 Discrete Subtype Definition --
2317 --------------------------------------
2319 -- DISCRETE_SUBTYPE_DEFINITION ::=
2320 -- discrete_SUBTYPE_INDICATION | RANGE
2322 -------------------------------
2323 -- 3.6 Component Definition --
2324 -------------------------------
2326 -- COMPONENT_DEFINITION ::=
2327 -- [aliased] SUBTYPE_INDICATION | ACCESS_DEFINITION
2329 -- Note: although the syntax does not permit a component definition to
2330 -- be an anonymous array (and the parser will diagnose such an attempt
2331 -- with an appropriate message), it is possible for anonymous arrays
2332 -- to appear as component definitions. The semantics and back end handle
2333 -- this case properly, and the expander in fact generates such cases.
2334 -- Access_Definition is an optional field that gives support to Ada 0Y
2335 -- (AI-230). The parser generates nodes that have either the
2336 -- Subtype_Indication field or else the Access_Definition field.
2338 -- N_Component_Definition
2339 -- Sloc points to ALIASED, ACCESS or to first token of subtype mark
2340 -- Aliased_Present (Flag4)
2341 -- Subtype_Indication (Node5) (set to Empty if not present)
2342 -- Access_Definition (Node3) (set to Empty if not present)
2344 -----------------------------
2345 -- 3.6.1 Index Constraint --
2346 -----------------------------
2348 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
2350 -- It is not in general possible to distinguish between discriminant
2351 -- constraints and index constraints at parse time, since a simple
2352 -- name could be either the subtype mark of a discrete range, or an
2353 -- expression in a discriminant association with no name. Either
2354 -- entry appears simply as the name, and the semantic parse must
2355 -- distinguish between the two cases. Thus we use a common tree
2356 -- node format for both of these constraint types.
2358 -- See Discriminant_Constraint for format of node
2360 ---------------------------
2361 -- 3.6.1 Discrete Range --
2362 ---------------------------
2364 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
2366 ----------------------------
2367 -- 3.7 Discriminant Part --
2368 ----------------------------
2370 -- DISCRIMINANT_PART ::=
2371 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
2373 ------------------------------------
2374 -- 3.7 Unknown Discriminant Part --
2375 ------------------------------------
2377 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
2379 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
2381 -- There is no explicit node in the tree for an unknown discriminant
2382 -- part. Instead the Unknown_Discriminants_Present flag is set in the
2385 ----------------------------------
2386 -- 3.7 Known Discriminant Part --
2387 ----------------------------------
2389 -- KNOWN_DISCRIMINANT_PART ::=
2390 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
2392 -------------------------------------
2393 -- 3.7 Discriminant Specification --
2394 -------------------------------------
2396 -- DISCRIMINANT_SPECIFICATION ::=
2397 -- DEFINING_IDENTIFIER_LIST : SUBTYPE_MARK
2398 -- [:= DEFAULT_EXPRESSION]
2399 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
2400 -- [:= DEFAULT_EXPRESSION]
2402 -- Although the syntax allows multiple identifiers in the list, the
2403 -- semantics is as though successive specifications were given with
2404 -- identical type definition and expression components. To simplify
2405 -- semantic processing, the parser represents a multiple declaration
2406 -- case as a sequence of single specifications, using the More_Ids and
2407 -- Prev_Ids flags to preserve the original source form as described
2408 -- in the section on "Handling of Defining Identifier Lists".
2410 -- N_Discriminant_Specification
2411 -- Sloc points to first identifier
2412 -- Defining_Identifier (Node1)
2413 -- Discriminant_Type (Node5) subtype mark or
2414 -- access parameter definition
2415 -- Expression (Node3) (set to Empty if no default expression)
2416 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2417 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2419 -----------------------------
2420 -- 3.7 Default Expression --
2421 -----------------------------
2423 -- DEFAULT_EXPRESSION ::= EXPRESSION
2425 ------------------------------------
2426 -- 3.7.1 Discriminant Constraint --
2427 ------------------------------------
2429 -- DISCRIMINANT_CONSTRAINT ::=
2430 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
2432 -- It is not in general possible to distinguish between discriminant
2433 -- constraints and index constraints at parse time, since a simple
2434 -- name could be either the subtype mark of a discrete range, or an
2435 -- expression in a discriminant association with no name. Either
2436 -- entry appears simply as the name, and the semantic parse must
2437 -- distinguish between the two cases. Thus we use a common tree
2438 -- node format for both of these constraint types.
2440 -- N_Index_Or_Discriminant_Constraint
2441 -- Sloc points to left paren
2442 -- Constraints (List1) points to list of discrete ranges or
2443 -- discriminant associations
2445 -------------------------------------
2446 -- 3.7.1 Discriminant Association --
2447 -------------------------------------
2449 -- DISCRIMINANT_ASSOCIATION ::=
2450 -- [discriminant_SELECTOR_NAME
2451 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
2453 -- Note: a discriminant association that has no selector name list
2454 -- appears directly as an expression in the tree.
2456 -- N_Discriminant_Association
2457 -- Sloc points to first token of discriminant association
2458 -- Selector_Names (List1) (always non-empty, since if no selector
2459 -- names are present, this node is not used, see comment above)
2460 -- Expression (Node3)
2462 ---------------------------------
2463 -- 3.8 Record Type Definition --
2464 ---------------------------------
2466 -- RECORD_TYPE_DEFINITION ::=
2467 -- [[abstract] tagged] [limited] RECORD_DEFINITION
2469 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
2471 -- There is no explicit node in the tree for a record type definition.
2472 -- Instead the flags for Tagged_Present and Limited_Present appear in
2473 -- the N_Record_Definition node for a record definition appearing in
2474 -- the context of a record type definition.
2476 ----------------------------
2477 -- 3.8 Record Definition --
2478 ----------------------------
2480 -- RECORD_DEFINITION ::=
2486 -- Note: the Abstract_Present, Tagged_Present and Limited_Present
2487 -- flags appear only for a record definition appearing in a record
2490 -- Note: the NULL RECORD case is not permitted in Ada 83
2492 -- N_Record_Definition
2493 -- Sloc points to RECORD or NULL
2494 -- End_Label (Node4) (set to Empty if internally generated record)
2495 -- Abstract_Present (Flag4)
2496 -- Tagged_Present (Flag15)
2497 -- Limited_Present (Flag17)
2498 -- Component_List (Node1) empty in null record case
2499 -- Null_Present (Flag13) set in null record case
2501 -------------------------
2502 -- 3.8 Component List --
2503 -------------------------
2505 -- COMPONENT_LIST ::=
2506 -- COMPONENT_ITEM {COMPONENT_ITEM}
2507 -- | {COMPONENT_ITEM} VARIANT_PART
2511 -- Sloc points to first token of component list
2512 -- Component_Items (List3)
2513 -- Variant_Part (Node4) (set to Empty if no variant part)
2514 -- Null_Present (Flag13)
2516 -------------------------
2517 -- 3.8 Component Item --
2518 -------------------------
2520 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
2522 -- Note: A component item can also be a pragma, and in the tree
2523 -- that is obtained after semantic processing, a component item
2524 -- can be an N_Null node resulting from a non-recognized pragma.
2526 --------------------------------
2527 -- 3.8 Component Declaration --
2528 --------------------------------
2530 -- COMPONENT_DECLARATION ::=
2531 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
2532 -- [:= DEFAULT_EXPRESSION]
2534 -- Note: although the syntax does not permit a component definition to
2535 -- be an anonymous array (and the parser will diagnose such an attempt
2536 -- with an appropriate message), it is possible for anonymous arrays
2537 -- to appear as component definitions. The semantics and back end handle
2538 -- this case properly, and the expander in fact generates such cases.
2540 -- Although the syntax allows multiple identifiers in the list, the
2541 -- semantics is as though successive declarations were given with the
2542 -- same component definition and expression components. To simplify
2543 -- semantic processing, the parser represents a multiple declaration
2544 -- case as a sequence of single declarations, using the More_Ids and
2545 -- Prev_Ids flags to preserve the original source form as described
2546 -- in the section on "Handling of Defining Identifier Lists".
2548 -- N_Component_Declaration
2549 -- Sloc points to first identifier
2550 -- Defining_Identifier (Node1)
2551 -- Component_Definition (Node4)
2552 -- Expression (Node3) (set to Empty if no default expression)
2553 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2554 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2556 -------------------------
2557 -- 3.8.1 Variant Part --
2558 -------------------------
2561 -- case discriminant_DIRECT_NAME is
2566 -- Note: the variants list can contain pragmas as well as variants.
2567 -- In a properly formed program there is at least one variant.
2570 -- Sloc points to CASE
2574 --------------------
2576 --------------------
2579 -- when DISCRETE_CHOICE_LIST =>
2583 -- Sloc points to WHEN
2584 -- Discrete_Choices (List4)
2585 -- Component_List (Node1)
2586 -- Enclosing_Variant (Node2-Sem)
2587 -- Present_Expr (Uint3-Sem)
2588 -- Dcheck_Function (Node5-Sem)
2590 ---------------------------------
2591 -- 3.8.1 Discrete Choice List --
2592 ---------------------------------
2594 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
2596 ----------------------------
2597 -- 3.8.1 Discrete Choice --
2598 ----------------------------
2600 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
2602 -- Note: in Ada 83 mode, the expression must be a simple expression
2604 -- The only choice that appears explicitly is the OTHERS choice, as
2605 -- defined here. Other cases of discrete choice (expression and
2606 -- discrete range) appear directly. This production is also used
2607 -- for the OTHERS possibility of an exception choice.
2609 -- Note: in accordance with the syntax, the parser does not check that
2610 -- OTHERS appears at the end on its own in a choice list context. This
2611 -- is a semantic check.
2614 -- Sloc points to OTHERS
2615 -- Others_Discrete_Choices (List1-Sem)
2616 -- All_Others (Flag11-Sem)
2618 ----------------------------------
2619 -- 3.9.1 Record Extension Part --
2620 ----------------------------------
2622 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
2624 -- Note: record extension parts are not permitted in Ada 83 mode
2626 ----------------------------------
2627 -- 3.10 Access Type Definition --
2628 ----------------------------------
2630 -- ACCESS_TYPE_DEFINITION ::=
2631 -- ACCESS_TO_OBJECT_DEFINITION
2632 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
2634 ---------------------------------------
2635 -- 3.10 Access To Object Definition --
2636 ---------------------------------------
2638 -- ACCESS_TO_OBJECT_DEFINITION ::=
2639 -- access [GENERAL_ACCESS_MODIFIER] SUBTYPE_INDICATION
2641 -- N_Access_To_Object_Definition
2642 -- Sloc points to ACCESS
2643 -- All_Present (Flag15)
2644 -- Subtype_Indication (Node5)
2645 -- Constant_Present (Flag17)
2647 -----------------------------------
2648 -- 3.10 General Access Modifier --
2649 -----------------------------------
2651 -- GENERAL_ACCESS_MODIFIER ::= all | constant
2653 -- Note: general access modifiers are not permitted in Ada 83 mode
2655 -- There is no explicit node in the tree for general access modifier.
2656 -- Instead the All_Present or Constant_Present flags are set in the
2659 -------------------------------------------
2660 -- 3.10 Access To Subprogram Definition --
2661 -------------------------------------------
2663 -- ACCESS_TO_SUBPROGRAM_DEFINITION
2664 -- access [protected] procedure PARAMETER_PROFILE
2665 -- | access [protected] function PARAMETER_AND_RESULT_PROFILE
2667 -- Note: access to subprograms are not permitted in Ada 83 mode
2669 -- N_Access_Function_Definition
2670 -- Sloc points to ACCESS
2671 -- Protected_Present (Flag15)
2672 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2673 -- Subtype_Mark (Node4) result subtype
2675 -- N_Access_Procedure_Definition
2676 -- Sloc points to ACCESS
2677 -- Protected_Present (Flag15)
2678 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2680 -----------------------------
2681 -- 3.10 Access Definition --
2682 -----------------------------
2684 -- ACCESS_DEFINITION ::= access SUBTYPE_MARK
2686 -- N_Access_Definition
2687 -- Sloc points to ACCESS
2688 -- Subtype_Mark (Node4)
2690 -----------------------------------------
2691 -- 3.10.1 Incomplete Type Declaration --
2692 -----------------------------------------
2694 -- INCOMPLETE_TYPE_DECLARATION ::=
2695 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART];
2697 -- N_Incomplete_Type_Declaration
2698 -- Sloc points to TYPE
2699 -- Defining_Identifier (Node1)
2700 -- Discriminant_Specifications (List4) (set to No_List if no
2701 -- discriminant part, or if the discriminant part is an
2702 -- unknown discriminant part)
2703 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
2705 ----------------------------
2706 -- 3.11 Declarative Part --
2707 ----------------------------
2709 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
2711 -- Note: although the parser enforces the syntactic requirement that
2712 -- a declarative part can contain only declarations, the semantic
2713 -- processing may add statements to the list of actions in a
2714 -- declarative part, so the code generator should be prepared
2715 -- to accept a statement in this position.
2717 ----------------------------
2718 -- 3.11 Declarative Item --
2719 ----------------------------
2721 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
2723 ----------------------------------
2724 -- 3.11 Basic Declarative Item --
2725 ----------------------------------
2727 -- BASIC_DECLARATIVE_ITEM ::=
2728 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
2734 -- BODY ::= PROPER_BODY | BODY_STUB
2736 -----------------------
2737 -- 3.11 Proper Body --
2738 -----------------------
2741 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
2748 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
2749 -- | INDEXED_COMPONENT | SLICE
2750 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
2751 -- | TYPE_CONVERSION | FUNCTION_CALL
2752 -- | CHARACTER_LITERAL
2754 ----------------------
2755 -- 4.1 Direct Name --
2756 ----------------------
2758 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
2764 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
2766 -------------------------------
2767 -- 4.1 Explicit Dereference --
2768 -------------------------------
2770 -- EXPLICIT_DEREFERENCE ::= NAME . all
2772 -- N_Explicit_Dereference
2773 -- Sloc points to ALL
2775 -- plus fields for expression
2777 -------------------------------
2778 -- 4.1 Implicit Dereference --
2779 -------------------------------
2781 -- IMPLICIT_DEREFERENCE ::= NAME
2783 ------------------------------
2784 -- 4.1.1 Indexed Component --
2785 ------------------------------
2787 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
2789 -- Note: the parser may generate this node in some situations where it
2790 -- should be a function call. The semantic pass must correct this
2791 -- misidentification (which is inevitable at the parser level).
2793 -- N_Indexed_Component
2794 -- Sloc contains a copy of the Sloc value of the Prefix
2796 -- Expressions (List1)
2797 -- plus fields for expression
2799 -- Note: if any of the subscripts requires a range check, then the
2800 -- Do_Range_Check flag is set on the corresponding expression, with
2801 -- the index type being determined from the type of the Prefix, which
2802 -- references the array being indexed.
2804 -- Note: in a fully analyzed and expanded indexed component node, and
2805 -- hence in any such node that gigi sees, if the prefix is an access
2806 -- type, then an explicit dereference operation has been inserted.
2812 -- SLICE ::= PREFIX (DISCRETE_RANGE)
2814 -- Note: an implicit subtype is created to describe the resulting
2815 -- type, so that the bounds of this type are the bounds of the slice.
2818 -- Sloc points to first token of prefix
2820 -- Discrete_Range (Node4)
2821 -- plus fields for expression
2823 -------------------------------
2824 -- 4.1.3 Selected Component --
2825 -------------------------------
2827 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
2829 -- Note: selected components that are semantically expanded names get
2830 -- changed during semantic processing into the separate N_Expanded_Name
2831 -- node. See description of this node in the section on semantic nodes.
2833 -- N_Selected_Component
2834 -- Sloc points to period
2836 -- Selector_Name (Node2)
2837 -- Associated_Node (Node4-Sem)
2838 -- Do_Discriminant_Check (Flag13-Sem)
2839 -- Is_In_Discriminant_Check (Flag11-Sem)
2840 -- plus fields for expression
2842 --------------------------
2843 -- 4.1.3 Selector Name --
2844 --------------------------
2846 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
2848 --------------------------------
2849 -- 4.1.4 Attribute Reference --
2850 --------------------------------
2852 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
2854 -- Note: the syntax is quite ambiguous at this point. Consider:
2856 -- A'Length (X) X is part of the attribute designator
2857 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
2858 -- A'Class (X) X is the expression of a type conversion
2860 -- It would be possible for the parser to distinguish these cases
2861 -- by looking at the attribute identifier. However, that would mean
2862 -- more work in introducing new implementation defined attributes,
2863 -- and also it would mean that special processing for attributes
2864 -- would be scattered around, instead of being centralized in the
2865 -- semantic routine that handles an N_Attribute_Reference node.
2866 -- Consequently, the parser in all the above cases stores the
2867 -- expression (X in these examples) as a single element list in
2868 -- in the Expressions field of the N_Attribute_Reference node.
2870 -- Similarly, for attributes like Max which take two arguments,
2871 -- we store the two arguments as a two element list in the
2872 -- Expressions field. Of course it is clear at parse time that
2873 -- this case is really a function call with an attribute as the
2874 -- prefix, but it turns out to be convenient to handle the two
2875 -- argument case in a similar manner to the one argument case,
2876 -- and indeed in general the parser will accept any number of
2877 -- expressions in this position and store them as a list in the
2878 -- attribute reference node. This allows for future addition of
2879 -- attributes that take more than two arguments.
2881 -- Note: named associates are not permitted in function calls where
2882 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
2883 -- to skip the normal subprogram argument processing.
2885 -- Note: for the attributes whose designators are technically keywords,
2886 -- i.e. digits, access, delta, range, the Attribute_Name field contains
2887 -- the corresponding name, even though no identifier is involved.
2889 -- The flag OK_For_Stream is used in generated code to indicate that
2890 -- a stream attribute is permissible for a limited type, and results
2891 -- in the use of the stream attribute for the underlying full type,
2892 -- or in the case of a protected type, the components (including any
2893 -- disriminants) are merely streamed in order.
2895 -- See Exp_Attr for a complete description of which attributes are
2896 -- passed onto Gigi, and which are handled entirely by the front end.
2898 -- Gigi restriction: For the Pos attribute, the prefix cannot be
2899 -- a non-standard enumeration type or a nonzero/zero semantics
2900 -- boolean type, so the value is simply the stored representation.
2902 -- Note: In generated code, the Address and Unrestricted_Access
2903 -- attributes can be applied to any expression, and the meaning is
2904 -- to create an object containing the value (the object is in the
2905 -- current stack frame), and pass the address of this value. If the
2906 -- Must_Be_Byte_Aligned flag is set, then the object whose address
2907 -- is taken must be on a byte (storage unit) boundary, and if it is
2908 -- not (or may not be), then the generated code must create a copy
2909 -- that is byte aligned, and pass the address of this copy.
2911 -- N_Attribute_Reference
2912 -- Sloc points to apostrophe
2914 -- Attribute_Name (Name2) identifier name from attribute designator
2915 -- Expressions (List1) (set to No_List if no associated expressions)
2916 -- Entity (Node4-Sem) used if the attribute yields a type
2917 -- Associated_Node (Node4-Sem)
2918 -- Do_Overflow_Check (Flag17-Sem)
2919 -- Redundant_Use (Flag13-Sem)
2920 -- OK_For_Stream (Flag4-Sem)
2921 -- Must_Be_Byte_Aligned (Flag14)
2922 -- plus fields for expression
2924 ---------------------------------
2925 -- 4.1.4 Attribute Designator --
2926 ---------------------------------
2928 -- ATTRIBUTE_DESIGNATOR ::=
2929 -- IDENTIFIER [(static_EXPRESSION)]
2930 -- | access | delta | digits
2932 -- There is no explicit node in the tree for an attribute designator.
2933 -- Instead the Attribute_Name and Expressions fields of the parent
2934 -- node (N_Attribute_Reference node) hold the information.
2936 -- Note: if ACCESS, DELTA or DIGITS appears in an attribute
2937 -- designator, then they are treated as identifiers internally
2938 -- rather than the keywords of the same name.
2940 --------------------------------------
2941 -- 4.1.4 Range Attribute Reference --
2942 --------------------------------------
2944 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
2946 -- A range attribute reference is represented in the tree using the
2947 -- normal N_Attribute_Reference node.
2949 ---------------------------------------
2950 -- 4.1.4 Range Attribute Designator --
2951 ---------------------------------------
2953 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
2955 -- A range attribute designator is represented in the tree using the
2956 -- normal N_Attribute_Reference node.
2958 --------------------
2960 --------------------
2963 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
2965 -----------------------------
2966 -- 4.3.1 Record Aggregate --
2967 -----------------------------
2969 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
2972 -- Sloc points to left parenthesis
2973 -- Expressions (List1) (set to No_List if none or null record case)
2974 -- Component_Associations (List2) (set to No_List if none)
2975 -- Null_Record_Present (Flag17)
2976 -- Aggregate_Bounds (Node3-Sem)
2977 -- Associated_Node (Node4-Sem)
2978 -- Static_Processing_OK (Flag4-Sem)
2979 -- Compile_Time_Known_Aggregate (Flag18-Sem)
2980 -- Expansion_Delayed (Flag11-Sem)
2981 -- plus fields for expression
2983 -- Note: this structure is used for both record and array aggregates
2984 -- since the two cases are not separable by the parser. The parser
2985 -- makes no attempt to enforce consistency here, so it is up to the
2986 -- semantic phase to make sure that the aggregate is consistent (i.e.
2987 -- that it is not a "half-and-half" case that mixes record and array
2988 -- syntax. In particular, for a record aggregate, the expressions
2989 -- field will be set if there are positional associations.
2991 -- Note: gigi/gcc can handle array aggregates correctly providing that
2992 -- they are entirely positional, and the array subtype involved has a
2993 -- known at compile time length and is not bit packed, or a convention
2994 -- Fortran array with more than one dimension. If these conditions
2995 -- are not met, then the front end must translate the aggregate into
2996 -- an appropriate set of assignments into a temporary.
2998 -- Note: for the record aggregate case, gigi/gcc can handle all cases
2999 -- of record aggregates, including those for packed, and rep-claused
3000 -- records, and also variant records, providing that there are no
3001 -- variable length fields whose size is not known at runtime, and
3002 -- providing that the aggregate is presented in fully named form.
3004 ----------------------------------------------
3005 -- 4.3.1 Record Component Association List --
3006 ----------------------------------------------
3008 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
3009 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
3012 -- There is no explicit node in the tree for a record component
3013 -- association list. Instead the Null_Record_Present flag is set in
3014 -- the parent node for the NULL RECORD case.
3016 ------------------------------------------------------
3017 -- 4.3.1 Record Component Association (also 4.3.3) --
3018 ------------------------------------------------------
3020 -- RECORD_COMPONENT_ASSOCIATION ::=
3021 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
3023 -- N_Component_Association
3024 -- Sloc points to first selector name
3026 -- Loop_Actions (List2-Sem)
3027 -- Expression (Node3)
3028 -- Box_Present (Flag15)
3030 -- Note: this structure is used for both record component associations
3031 -- and array component associations, since the two cases aren't always
3032 -- separable by the parser. The choices list may represent either a
3033 -- list of selector names in the record aggregate case, or a list of
3034 -- discrete choices in the array aggregate case or an N_Others_Choice
3035 -- node (which appears as a singleton list). Box_Present gives support
3036 -- to Ada 0Y (AI-287).
3038 ------------------------------------
3039 -- 4.3.1 Commponent Choice List --
3040 ------------------------------------
3042 -- COMPONENT_CHOICE_LIST ::=
3043 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
3046 -- The entries of a component choice list appear in the Choices list
3047 -- of the associated N_Component_Association, as either selector
3048 -- names, or as an N_Others_Choice node.
3050 --------------------------------
3051 -- 4.3.2 Extension Aggregate --
3052 --------------------------------
3054 -- EXTENSION_AGGREGATE ::=
3055 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
3057 -- Note: extension aggregates are not permitted in Ada 83 mode
3059 -- N_Extension_Aggregate
3060 -- Sloc points to left parenthesis
3061 -- Ancestor_Part (Node3)
3062 -- Associated_Node (Node4-Sem)
3063 -- Expressions (List1) (set to No_List if none or null record case)
3064 -- Component_Associations (List2) (set to No_List if none)
3065 -- Null_Record_Present (Flag17)
3066 -- Expansion_Delayed (Flag11-Sem)
3067 -- plus fields for expression
3069 --------------------------
3070 -- 4.3.2 Ancestor Part --
3071 --------------------------
3073 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
3075 ----------------------------
3076 -- 4.3.3 Array Aggregate --
3077 ----------------------------
3079 -- ARRAY_AGGREGATE ::=
3080 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
3082 ---------------------------------------
3083 -- 4.3.3 Positional Array Aggregate --
3084 ---------------------------------------
3086 -- POSITIONAL_ARRAY_AGGREGATE ::=
3087 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
3088 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
3090 -- See Record_Aggregate (4.3.1) for node structure
3092 ----------------------------------
3093 -- 4.3.3 Named Array Aggregate --
3094 ----------------------------------
3096 -- NAMED_ARRAY_AGGREGATE ::=
3097 -- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
3099 -- See Record_Aggregate (4.3.1) for node structure
3101 ----------------------------------------
3102 -- 4.3.3 Array Component Association --
3103 ----------------------------------------
3105 -- ARRAY_COMPONENT_ASSOCIATION ::=
3106 -- DISCRETE_CHOICE_LIST => EXPRESSION
3108 -- See Record_Component_Association (4.3.1) for node structure
3110 --------------------------------------------------
3111 -- 4.4 Expression/Relation/Term/Factor/Primary --
3112 --------------------------------------------------
3115 -- RELATION {and RELATION} | RELATION {and then RELATION}
3116 -- | RELATION {or RELATION} | RELATION {or else RELATION}
3117 -- | RELATION {xor RELATION}
3120 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
3121 -- | SIMPLE_EXPRESSION [not] in RANGE
3122 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3124 -- SIMPLE_EXPRESSION ::=
3125 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
3127 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
3129 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
3131 -- No nodes are generated for any of these constructs. Instead, the
3132 -- node for the operator appears directly. When we refer to an
3133 -- expression in this description, we mean any of the possible
3134 -- consistuent components of an expression (e.g. identifier is
3135 -- an example of an expression).
3142 -- NUMERIC_LITERAL | null
3143 -- | STRING_LITERAL | AGGREGATE
3144 -- | NAME | QUALIFIED_EXPRESSION
3145 -- | ALLOCATOR | (EXPRESSION)
3147 -- Usually there is no explicit node in the tree for primary. Instead
3148 -- the constituent (e.g. AGGREGATE) appears directly. There are two
3149 -- exceptions. First, there is an explicit node for a null primary.
3152 -- Sloc points to NULL
3153 -- plus fields for expression
3155 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
3156 -- that the parser keep track of which subexpressions are enclosed
3157 -- in parentheses, and how many levels of parentheses are used. This
3158 -- information is required for optimization purposes, and also for
3159 -- some semantic checks (e.g. (((1))) in a procedure spec does not
3160 -- conform with ((((1)))) in the body).
3162 -- The parentheses are recorded by keeping a Paren_Count field in every
3163 -- subexpression node (it is actually present in all nodes, but only
3164 -- used in subexpression nodes). This count records the number of
3165 -- levels of parentheses. If the number of levels in the source exceeds
3166 -- the maximum accomodated by this count, then the count is simply left
3167 -- at the maximum value. This means that there are some pathalogical
3168 -- cases of failure to detect conformance failures (e.g. an expression
3169 -- with 500 levels of parens will conform with one with 501 levels),
3170 -- but we do not need to lose sleep over this.
3172 -- Historical note: in versions of GNAT prior to 1.75, there was a node
3173 -- type N_Parenthesized_Expression used to accurately record unlimited
3174 -- numbers of levels of parentheses. However, it turned out to be a
3175 -- real nuisance to have to take into account the possible presence of
3176 -- this node during semantic analysis, since basically parentheses have
3177 -- zero relevance to semantic analysis.
3179 -- Note: the level of parentheses always present in things like
3180 -- aggregates does not count, only the parentheses in the primary
3181 -- (EXPRESSION) affect the setting of the Paren_Count field.
3183 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
3184 -- treated as though it were Empty) if No_Initialization is set True.
3186 --------------------------------------
3187 -- 4.5 Short Circuit Control Forms --
3188 --------------------------------------
3191 -- RELATION {and then RELATION} | RELATION {or else RELATION}
3193 -- Gigi restriction: For both these control forms, the operand and
3194 -- result types are always Standard.Boolean. The expander inserts the
3195 -- required conversion operations where needed to ensure this is the
3199 -- Sloc points to AND of AND THEN
3200 -- Left_Opnd (Node2)
3201 -- Right_Opnd (Node3)
3202 -- Actions (List1-Sem)
3203 -- plus fields for expression
3206 -- Sloc points to OR of OR ELSE
3207 -- Left_Opnd (Node2)
3208 -- Right_Opnd (Node3)
3209 -- Actions (List1-Sem)
3210 -- plus fields for expression
3212 -- Note: The Actions field is used to hold actions associated with
3213 -- the right hand operand. These have to be treated specially since
3214 -- they are not unconditionally executed. See Insert_Actions for a
3215 -- more detailed description of how these actions are handled.
3217 ---------------------------
3218 -- 4.5 Membership Tests --
3219 ---------------------------
3222 -- SIMPLE_EXPRESSION [not] in RANGE
3223 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3225 -- Note: although the grammar above allows only a range or a
3226 -- subtype mark, the parser in fact will accept any simple
3227 -- expression in place of a subtype mark. This means that the
3228 -- semantic analyzer must be prepared to deal with, and diagnose
3229 -- a simple expression other than a name for the right operand.
3230 -- This simplifies error recovery in the parser.
3233 -- Sloc points to IN
3234 -- Left_Opnd (Node2)
3235 -- Right_Opnd (Node3)
3236 -- plus fields for expression
3239 -- Sloc points to NOT of NOT IN
3240 -- Left_Opnd (Node2)
3241 -- Right_Opnd (Node3)
3242 -- plus fields for expression
3244 --------------------
3246 --------------------
3248 -- LOGICAL_OPERATOR ::= and | or | xor
3250 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
3252 -- BINARY_ADDING_OPERATOR ::= + | - | &
3254 -- UNARY_ADDING_OPERATOR ::= + | -
3256 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
3258 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
3260 -- Sprint syntax if Treat_Fixed_As_Integer is set:
3267 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
3268 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
3269 -- All handling of smalls for multiplication and division is handled
3270 -- by the front end (mod and rem result only from expansion). Gigi
3271 -- thus never needs to worry about small values (for other operators
3272 -- operating on fixed-point, e.g. addition, the small value does not
3273 -- have any semantic effect anyway, these are always integer operations.
3275 -- Gigi restriction: For all operators taking Boolean operands, the
3276 -- type is always Standard.Boolean. The expander inserts the required
3277 -- conversion operations where needed to ensure this is the case.
3280 -- Sloc points to AND
3281 -- Do_Length_Check (Flag4-Sem)
3282 -- plus fields for binary operator
3283 -- plus fields for expression
3286 -- Sloc points to OR
3287 -- Do_Length_Check (Flag4-Sem)
3288 -- plus fields for binary operator
3289 -- plus fields for expression
3292 -- Sloc points to XOR
3293 -- Do_Length_Check (Flag4-Sem)
3294 -- plus fields for binary operator
3295 -- plus fields for expression
3299 -- plus fields for binary operator
3300 -- plus fields for expression
3303 -- Sloc points to /=
3304 -- plus fields for binary operator
3305 -- plus fields for expression
3309 -- plus fields for binary operator
3310 -- plus fields for expression
3313 -- Sloc points to <=
3314 -- plus fields for binary operator
3315 -- plus fields for expression
3319 -- plus fields for binary operator
3320 -- plus fields for expression
3323 -- Sloc points to >=
3324 -- plus fields for binary operator
3325 -- plus fields for expression
3328 -- Sloc points to + (binary)
3329 -- plus fields for binary operator
3330 -- plus fields for expression
3333 -- Sloc points to - (binary)
3334 -- plus fields for binary operator
3335 -- plus fields for expression
3339 -- Is_Component_Left_Opnd (Flag13-Sem)
3340 -- Is_Component_Right_Opnd (Flag14-Sem)
3341 -- plus fields for binary operator
3342 -- plus fields for expression
3346 -- Treat_Fixed_As_Integer (Flag14-Sem)
3347 -- Rounded_Result (Flag18-Sem)
3348 -- plus fields for binary operator
3349 -- plus fields for expression
3353 -- Treat_Fixed_As_Integer (Flag14-Sem)
3354 -- Do_Division_Check (Flag13-Sem)
3355 -- Rounded_Result (Flag18-Sem)
3356 -- plus fields for binary operator
3357 -- plus fields for expression
3360 -- Sloc points to MOD
3361 -- Treat_Fixed_As_Integer (Flag14-Sem)
3362 -- Do_Division_Check (Flag13-Sem)
3363 -- plus fields for binary operator
3364 -- plus fields for expression
3367 -- Sloc points to REM
3368 -- Treat_Fixed_As_Integer (Flag14-Sem)
3369 -- Do_Division_Check (Flag13-Sem)
3370 -- plus fields for binary operator
3371 -- plus fields for expression
3374 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
3375 -- Sloc points to **
3376 -- plus fields for binary operator
3377 -- plus fields for expression
3380 -- Sloc points to + (unary)
3381 -- plus fields for unary operator
3382 -- plus fields for expression
3385 -- Sloc points to - (unary)
3386 -- plus fields for unary operator
3387 -- plus fields for expression
3390 -- Sloc points to ABS
3391 -- plus fields for unary operator
3392 -- plus fields for expression
3395 -- Sloc points to NOT
3396 -- plus fields for unary operator
3397 -- plus fields for expression
3399 -- See also shift operators in section B.2
3401 -- Note on fixed-point operations passed to Gigi: For adding operators,
3402 -- the semantics is to treat these simply as integer operations, with
3403 -- the small values being ignored (the bounds are already stored in
3404 -- units of small, so that constraint checking works as usual). For the
3405 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
3406 -- point operands if the Treat_Fixed_As_Integer flag is set and will
3407 -- thus treat these nodes in identical manner, ignoring small values.
3409 --------------------------
3410 -- 4.6 Type Conversion --
3411 --------------------------
3413 -- TYPE_CONVERSION ::=
3414 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
3416 -- In the (NAME) case, the name is stored as the expression
3418 -- Note: the parser never generates a type conversion node, since it
3419 -- looks like an indexed component which is generated by preference.
3420 -- The semantic pass must correct this misidentification.
3422 -- Gigi handles conversions that involve no change in the root type,
3423 -- and also all conversions from integer to floating-point types.
3424 -- Conversions from floating-point to integer are only handled in
3425 -- the case where Float_Truncate flag set. Other conversions from
3426 -- floating-point to integer (involving rounding) and all conversions
3427 -- involving fixed-point types are handled by the expander.
3429 -- Sprint syntax if Float_Truncate set: X^(Y)
3430 -- Sprint syntax if Conversion_OK set X?(Y)
3431 -- Sprint syntax if both flags set X?^(Y)
3433 -- Note: If either the operand or result type is fixed-point, Gigi will
3434 -- only see a type conversion node with Conversion_OK set. The front end
3435 -- takes care of all handling of small's for fixed-point conversions.
3437 -- N_Type_Conversion
3438 -- Sloc points to first token of subtype mark
3439 -- Subtype_Mark (Node4)
3440 -- Expression (Node3)
3441 -- Do_Tag_Check (Flag13-Sem)
3442 -- Do_Length_Check (Flag4-Sem)
3443 -- Do_Overflow_Check (Flag17-Sem)
3444 -- Float_Truncate (Flag11-Sem)
3445 -- Rounded_Result (Flag18-Sem)
3446 -- Conversion_OK (Flag14-Sem)
3447 -- plus fields for expression
3449 -- Note: if a range check is required, then the Do_Range_Check flag
3450 -- is set in the Expression with the check being done against the
3451 -- target type range (after the base type conversion, if any).
3453 -------------------------------
3454 -- 4.7 Qualified Expression --
3455 -------------------------------
3457 -- QUALIFIED_EXPRESSION ::=
3458 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
3460 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
3461 -- the expression, so the Expression field of this node always points
3462 -- to a parenthesized expression in this case (i.e. Paren_Count will
3463 -- always be non-zero for the referenced expression if it is not an
3466 -- N_Qualified_Expression
3467 -- Sloc points to apostrophe
3468 -- Subtype_Mark (Node4)
3469 -- Expression (Node3) expression or aggregate
3470 -- plus fields for expression
3472 --------------------
3474 --------------------
3477 -- new SUBTYPE_INDICATION | new QUALIFIED_EXPRESSION
3479 -- Sprint syntax (when storage pool present)
3480 -- new xxx (storage_pool = pool)
3483 -- Sloc points to NEW
3484 -- Expression (Node3) subtype indication or qualified expression
3485 -- Storage_Pool (Node1-Sem)
3486 -- Procedure_To_Call (Node4-Sem)
3487 -- No_Initialization (Flag13-Sem)
3488 -- Do_Storage_Check (Flag17-Sem)
3489 -- plus fields for expression
3491 ---------------------------------
3492 -- 5.1 Sequence Of Statements --
3493 ---------------------------------
3495 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
3497 -- Note: Although the parser will not accept a declaration as a
3498 -- statement, the semantic analyzer may insert declarations (e.g.
3499 -- declarations of implicit types needed for execution of other
3500 -- statements) into a sequence of statements, so the code genmerator
3501 -- should be prepared to accept a declaration where a statement is
3502 -- expected. Note also that pragmas can appear as statements.
3504 --------------------
3506 --------------------
3509 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
3511 -- There is no explicit node in the tree for a statement. Instead, the
3512 -- individual statement appears directly. Labels are treated as a
3513 -- kind of statement, i.e. they are linked into a statement list at
3514 -- the point they appear, so the labeled statement appears following
3515 -- the label or labels in the statement list.
3517 ---------------------------
3518 -- 5.1 Simple Statement --
3519 ---------------------------
3521 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
3522 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
3523 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
3524 -- | RETURN_STATEMENT | ENTRY_CALL_STATEMENT
3525 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
3526 -- | ABORT_STATEMENT | RAISE_STATEMENT
3529 -----------------------------
3530 -- 5.1 Compound Statement --
3531 -----------------------------
3533 -- COMPOUND_STATEMENT ::=
3534 -- IF_STATEMENT | CASE_STATEMENT
3535 -- | LOOP_STATEMENT | BLOCK_STATEMENT
3536 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
3538 -------------------------
3539 -- 5.1 Null Statement --
3540 -------------------------
3542 -- NULL_STATEMENT ::= null;
3545 -- Sloc points to NULL
3551 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
3553 -- Note that the occurrence of a label is not a defining identifier,
3554 -- but rather a referencing occurrence. The defining occurrence is
3555 -- in the implicit label declaration which occurs in the innermost
3559 -- Sloc points to <<
3560 -- Identifier (Node1) direct name of statement identifier
3561 -- Exception_Junk (Flag11-Sem)
3563 -------------------------------
3564 -- 5.1 Statement Identifier --
3565 -------------------------------
3567 -- STATEMENT_INDENTIFIER ::= DIRECT_NAME
3569 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
3570 -- (not an OPERATOR_SYMBOL)
3572 -------------------------------
3573 -- 5.2 Assignment Statement --
3574 -------------------------------
3576 -- ASSIGNMENT_STATEMENT ::=
3577 -- variable_NAME := EXPRESSION;
3579 -- N_Assignment_Statement
3580 -- Sloc points to :=
3582 -- Expression (Node3)
3583 -- Do_Tag_Check (Flag13-Sem)
3584 -- Do_Length_Check (Flag4-Sem)
3585 -- Forwards_OK (Flag5-Sem)
3586 -- Backwards_OK (Flag6-Sem)
3587 -- No_Ctrl_Actions (Flag7-Sem)
3589 -- Note: if a range check is required, then the Do_Range_Check flag
3590 -- is set in the Expression (right hand side), with the check being
3591 -- done against the type of the Name (left hand side).
3593 -- Note: the back end places some restrictions on the form of the
3594 -- Expression field. If the object being assigned to is Atomic, then
3595 -- the Expression may not have the form of an aggregate (since this
3596 -- might cause the back end to generate separate assignments). It
3597 -- also cannot be a reference to an object marked as a true constant
3598 -- (Is_True_Constant flag set), where the object is itself initalized
3599 -- with an aggregate. If necessary the front end must generate an
3600 -- extra temporary (with Is_True_Constant set False), and initialize
3601 -- this temporary as required (the temporary itself is not atomic).
3603 -----------------------
3604 -- 5.3 If Statement --
3605 -----------------------
3608 -- if CONDITION then
3609 -- SEQUENCE_OF_STATEMENTS
3610 -- {elsif CONDITION then
3611 -- SEQUENCE_OF_STATEMENTS}
3613 -- SEQUENCE_OF_STATEMENTS]
3616 -- Gigi restriction: This expander ensures that the type of the
3617 -- Condition fields is always Standard.Boolean, even if the type
3618 -- in the source is some non-standard boolean type.
3621 -- Sloc points to IF
3622 -- Condition (Node1)
3623 -- Then_Statements (List2)
3624 -- Elsif_Parts (List3) (set to No_List if none present)
3625 -- Else_Statements (List4) (set to No_List if no else part present)
3626 -- End_Span (Uint5) (set to No_Uint if expander generated)
3629 -- Sloc points to ELSIF
3630 -- Condition (Node1)
3631 -- Then_Statements (List2)
3632 -- Condition_Actions (List3-Sem)
3634 --------------------
3636 --------------------
3638 -- CONDITION ::= boolean_EXPRESSION
3640 -------------------------
3641 -- 5.4 Case Statement --
3642 -------------------------
3644 -- CASE_STATEMENT ::=
3645 -- case EXPRESSION is
3646 -- CASE_STATEMENT_ALTERNATIVE
3647 -- {CASE_STATEMENT_ALTERNATIVE}
3650 -- Note: the Alternatives can contain pragmas. These only occur at
3651 -- the start of the list, since any pragmas occurring after the first
3652 -- alternative are absorbed into the corresponding statement sequence.
3655 -- Sloc points to CASE
3656 -- Expression (Node3)
3657 -- Alternatives (List4)
3658 -- End_Span (Uint5) (set to No_Uint if expander generated)
3660 -------------------------------------
3661 -- 5.4 Case Statement Alternative --
3662 -------------------------------------
3664 -- CASE_STATEMENT_ALTERNATIVE ::=
3665 -- when DISCRETE_CHOICE_LIST =>
3666 -- SEQUENCE_OF_STATEMENTS
3668 -- N_Case_Statement_Alternative
3669 -- Sloc points to WHEN
3670 -- Discrete_Choices (List4)
3671 -- Statements (List3)
3673 -------------------------
3674 -- 5.5 Loop Statement --
3675 -------------------------
3677 -- LOOP_STATEMENT ::=
3678 -- [loop_STATEMENT_IDENTIFIER :]
3679 -- [ITERATION_SCHEME] loop
3680 -- SEQUENCE_OF_STATEMENTS
3681 -- end loop [loop_IDENTIFIER];
3683 -- Note: The occurrence of a loop label is not a defining identifier
3684 -- but rather a referencing occurrence. The defining occurrence is in
3685 -- the implicit label declaration which occurs in the innermost
3688 -- Note: there is always a loop statement identifier present in
3689 -- the tree, even if none was given in the source. In the case where
3690 -- no loop identifier is given in the source, the parser creates
3691 -- a name of the form _Loop_n, where n is a decimal integer (the
3692 -- two underlines ensure that the loop names created in this manner
3693 -- do not conflict with any user defined identifiers), and the flag
3694 -- Has_Created_Identifier is set to True. The only exception to the
3695 -- rule that all loop statement nodes have identifiers occurs for
3696 -- loops constructed by the expander, and the semantic analyzer will
3697 -- create and supply dummy loop identifiers in these cases.
3700 -- Sloc points to LOOP
3701 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
3702 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
3703 -- Statements (List3)
3704 -- End_Label (Node4)
3705 -- Has_Created_Identifier (Flag15)
3706 -- Is_Null_Loop (Flag16)
3708 --------------------------
3709 -- 5.5 Iteration Scheme --
3710 --------------------------
3712 -- ITERATION_SCHEME ::=
3713 -- while CONDITION | for LOOP_PARAMETER_SPECIFICATION
3715 -- Gigi restriction: This expander ensures that the type of the
3716 -- Condition field is always Standard.Boolean, even if the type
3717 -- in the source is some non-standard boolean type.
3719 -- N_Iteration_Scheme
3720 -- Sloc points to WHILE or FOR
3721 -- Condition (Node1) (set to Empty if FOR case)
3722 -- Condition_Actions (List3-Sem)
3723 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
3725 ---------------------------------------
3726 -- 5.5 Loop parameter specification --
3727 ---------------------------------------
3729 -- LOOP_PARAMETER_SPECIFICATION ::=
3730 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
3732 -- N_Loop_Parameter_Specification
3733 -- Sloc points to first identifier
3734 -- Defining_Identifier (Node1)
3735 -- Reverse_Present (Flag15)
3736 -- Discrete_Subtype_Definition (Node4)
3738 --------------------------
3739 -- 5.6 Block Statement --
3740 --------------------------
3742 -- BLOCK_STATEMENT ::=
3743 -- [block_STATEMENT_IDENTIFIER:]
3745 -- DECLARATIVE_PART]
3747 -- HANDLED_SEQUENCE_OF_STATEMENTS
3748 -- end [block_IDENTIFIER];
3750 -- Note that the occurrence of a block identifier is not a defining
3751 -- identifier, but rather a referencing occurrence. The defining
3752 -- occurrence is in the implicit label declaration which occurs in
3753 -- the innermost enclosing block.
3755 -- Note: there is always a block statement identifier present in
3756 -- the tree, even if none was given in the source. In the case where
3757 -- no block identifier is given in the source, the parser creates
3758 -- a name of the form _Block_n, where n is a decimal integer (the
3759 -- two underlines ensure that the block names created in this manner
3760 -- do not conflict with any user defined identifiers), and the flag
3761 -- Has_Created_Identifier is set to True. The only exception to the
3762 -- rule that all loop statement nodes have identifiers occurs for
3763 -- blocks constructed by the expander, and the semantic analyzer
3764 -- creates and supplies dummy names for the blocks).
3766 -- N_Block_Statement
3767 -- Sloc points to DECLARE or BEGIN
3768 -- Identifier (Node1) block direct name (set to Empty if not present)
3769 -- Declarations (List2) (set to No_List if no DECLARE part)
3770 -- Handled_Statement_Sequence (Node4)
3771 -- Is_Task_Master (Flag5-Sem)
3772 -- Activation_Chain_Entity (Node3-Sem)
3773 -- Has_Created_Identifier (Flag15)
3774 -- Is_Task_Allocation_Block (Flag6)
3775 -- Is_Asynchronous_Call_Block (Flag7)
3777 -------------------------
3778 -- 5.7 Exit Statement --
3779 -------------------------
3781 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
3783 -- Gigi restriction: This expander ensures that the type of the
3784 -- Condition field is always Standard.Boolean, even if the type
3785 -- in the source is some non-standard boolean type.
3788 -- Sloc points to EXIT
3789 -- Name (Node2) (set to Empty if no loop name present)
3790 -- Condition (Node1) (set to Empty if no when part present)
3792 -------------------------
3793 -- 5.9 Goto Statement --
3794 -------------------------
3796 -- GOTO_STATEMENT ::= goto label_NAME;
3799 -- Sloc points to GOTO
3801 -- Exception_Junk (Flag11-Sem)
3803 ---------------------------------
3804 -- 6.1 Subprogram Declaration --
3805 ---------------------------------
3807 -- SUBPROGRAM_DECLARATION ::= SUBPROGRAM_SPECIFICATION;
3809 -- N_Subprogram_Declaration
3810 -- Sloc points to FUNCTION or PROCEDURE
3811 -- Specification (Node1)
3812 -- Body_To_Inline (Node3-Sem)
3813 -- Corresponding_Body (Node5-Sem)
3814 -- Parent_Spec (Node4-Sem)
3816 ------------------------------------------
3817 -- 6.1 Abstract Subprogram Declaration --
3818 ------------------------------------------
3820 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
3821 -- SUBPROGRAM_SPECIFICATION is abstract;
3823 -- N_Abstract_Subprogram_Declaration
3824 -- Sloc points to ABSTRACT
3825 -- Specification (Node1)
3827 -----------------------------------
3828 -- 6.1 Subprogram Specification --
3829 -----------------------------------
3831 -- SUBPROGRAM_SPECIFICATION ::=
3832 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
3833 -- | function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
3835 -- Note: there are no separate nodes for the profiles, instead the
3836 -- information appears directly in the following nodes.
3838 -- N_Function_Specification
3839 -- Sloc points to FUNCTION
3840 -- Defining_Unit_Name (Node1) (the designator)
3841 -- Elaboration_Boolean (Node2-Sem)
3842 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3843 -- Subtype_Mark (Node4) for return type
3844 -- Generic_Parent (Node5-Sem)
3846 -- N_Procedure_Specification
3847 -- Sloc points to PROCEDURE
3848 -- Defining_Unit_Name (Node1)
3849 -- Elaboration_Boolean (Node2-Sem)
3850 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3851 -- Generic_Parent (Node5-Sem)
3853 ---------------------
3854 -- 6.1 Designator --
3855 ---------------------
3858 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
3860 -- Designators that are simply identifiers or operator symbols appear
3861 -- directly in the tree in this form. The following node is used only
3862 -- in the case where the designator has a parent unit name component.
3865 -- Sloc points to period
3866 -- Name (Node2) holds the parent unit name. Note that this is always
3867 -- non-Empty, since this node is only used for the case where a
3868 -- parent library unit package name is present.
3869 -- Identifier (Node1)
3871 -- Note that the identifier can also be an operator symbol here.
3873 ------------------------------
3874 -- 6.1 Defining Designator --
3875 ------------------------------
3877 -- DEFINING_DESIGNATOR ::=
3878 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
3880 -------------------------------------
3881 -- 6.1 Defining Program Unit Name --
3882 -------------------------------------
3884 -- DEFINING_PROGRAM_UNIT_NAME ::=
3885 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
3887 -- The parent unit name is present only in the case of a child unit
3888 -- name (permissible only for Ada 95 for a library level unit, i.e.
3889 -- a unit at scope level one). If no such name is present, the defining
3890 -- program unit name is represented simply as the defining identifier.
3891 -- In the child unit case, the following node is used to represent the
3894 -- N_Defining_Program_Unit_Name
3895 -- Sloc points to period
3896 -- Name (Node2) holds the parent unit name. Note that this is always
3897 -- non-Empty, since this node is only used for the case where a
3898 -- parent unit name is present.
3899 -- Defining_Identifier (Node1)
3901 --------------------------
3902 -- 6.1 Operator Symbol --
3903 --------------------------
3905 -- OPERATOR_SYMBOL ::= STRING_LITERAL
3907 -- Note: the fields of the N_Operator_Symbol node are laid out to
3908 -- match the corresponding fields of an N_Character_Literal node. This
3909 -- allows easy conversion of the operator symbol node into a character
3910 -- literal node in the case where a string constant of the form of an
3911 -- operator symbol is scanned out as such, but turns out semantically
3912 -- to be a string literal that is not an operator. For details see
3913 -- Sinfo.CN.Change_Operator_Symbol_To_String_Literal.
3915 -- N_Operator_Symbol
3916 -- Sloc points to literal
3917 -- Chars (Name1) contains the Name_Id for the operator symbol
3918 -- Strval (Str3) Id of string value. This is used if the operator
3919 -- symbol turns out to be a normal string after all.
3920 -- Entity (Node4-Sem)
3921 -- Associated_Node (Node4-Sem)
3922 -- Has_Private_View (Flag11-Sem) set in generic units.
3923 -- Etype (Node5-Sem)
3925 -- Note: the Strval field may be set to No_String for generated
3926 -- operator symbols that are known not to be string literals
3929 -----------------------------------
3930 -- 6.1 Defining Operator Symbol --
3931 -----------------------------------
3933 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
3935 -- A defining operator symbol is an entity, which has additional
3936 -- fields depending on the setting of the Ekind field. These
3937 -- additional fields are defined (and access subprograms declared)
3938 -- in package Einfo.
3940 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
3941 -- are deliberately layed out to match the layout of fields in an
3942 -- ordinary N_Operator_Symbol node allowing for easy alteration of
3943 -- an operator symbol node into a defining operator symbol node.
3944 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
3945 -- for further details.
3947 -- N_Defining_Operator_Symbol
3948 -- Sloc points to literal
3949 -- Chars (Name1) contains the Name_Id for the operator symbol
3950 -- Next_Entity (Node2-Sem)
3951 -- Scope (Node3-Sem)
3952 -- Etype (Node5-Sem)
3954 ----------------------------
3955 -- 6.1 Parameter Profile --
3956 ----------------------------
3958 -- PARAMETER_PROFILE ::= [FORMAL_PART]
3960 ---------------------------------------
3961 -- 6.1 Parameter and Result Profile --
3962 ---------------------------------------
3964 -- PARAMETER_AND_RESULT_PROFILE ::= [FORMAL_PART] return SUBTYPE_MARK
3966 -- There is no explicit node in the tree for a parameter and result
3967 -- profile. Instead the information appears directly in the parent.
3969 ----------------------
3970 -- 6.1 Formal part --
3971 ----------------------
3974 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
3976 ----------------------------------
3977 -- 6.1 Parameter specification --
3978 ----------------------------------
3980 -- PARAMETER_SPECIFICATION ::=
3981 -- DEFINING_IDENTIFIER_LIST : MODE SUBTYPE_MARK
3982 -- [:= DEFAULT_EXPRESSION]
3983 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
3984 -- [:= DEFAULT_EXPRESSION]
3986 -- Although the syntax allows multiple identifiers in the list, the
3987 -- semantics is as though successive specifications were given with
3988 -- identical type definition and expression components. To simplify
3989 -- semantic processing, the parser represents a multiple declaration
3990 -- case as a sequence of single Specifications, using the More_Ids and
3991 -- Prev_Ids flags to preserve the original source form as described
3992 -- in the section on "Handling of Defining Identifier Lists".
3994 -- N_Parameter_Specification
3995 -- Sloc points to first identifier
3996 -- Defining_Identifier (Node1)
3997 -- In_Present (Flag15)
3998 -- Out_Present (Flag17)
3999 -- Parameter_Type (Node2) subtype mark or access definition
4000 -- Expression (Node3) (set to Empty if no default expression present)
4001 -- Do_Accessibility_Check (Flag13-Sem)
4002 -- More_Ids (Flag5) (set to False if no more identifiers in list)
4003 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
4004 -- Default_Expression (Node5-Sem)
4010 -- MODE ::= [in] | in out | out
4012 -- There is no explicit node in the tree for the Mode. Instead the
4013 -- In_Present and Out_Present flags are set in the parent node to
4014 -- record the presence of keywords specifying the mode.
4016 --------------------------
4017 -- 6.3 Subprogram Body --
4018 --------------------------
4020 -- SUBPROGRAM_BODY ::=
4021 -- SUBPROGRAM_SPECIFICATION is
4024 -- HANDLED_SEQUENCE_OF_STATEMENTS
4025 -- end [DESIGNATOR];
4027 -- N_Subprogram_Body
4028 -- Sloc points to FUNCTION or PROCEDURE
4029 -- Specification (Node1)
4030 -- Declarations (List2)
4031 -- Handled_Statement_Sequence (Node4)
4032 -- Activation_Chain_Entity (Node3-Sem)
4033 -- Corresponding_Spec (Node5-Sem)
4034 -- Acts_As_Spec (Flag4-Sem)
4035 -- Bad_Is_Detected (Flag15) used only by parser
4036 -- Do_Storage_Check (Flag17-Sem)
4037 -- Has_Priority_Pragma (Flag6-Sem)
4038 -- Is_Protected_Subprogram_Body (Flag7-Sem)
4039 -- Is_Task_Master (Flag5-Sem)
4040 -- Was_Originally_Stub (Flag13-Sem)
4042 -----------------------------------
4043 -- 6.4 Procedure Call Statement --
4044 -----------------------------------
4046 -- PROCEDURE_CALL_STATEMENT ::=
4047 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
4049 -- Note: the reason that a procedure call has expression fields is
4050 -- that it semantically resembles an expression, e.g. overloading is
4051 -- allowed and a type is concocted for semantic processing purposes.
4052 -- Certain of these fields, such as Parens are not relevant, but it
4053 -- is easier to just supply all of them together!
4055 -- N_Procedure_Call_Statement
4056 -- Sloc points to first token of name or prefix
4057 -- Name (Node2) stores name or prefix
4058 -- Parameter_Associations (List3) (set to No_List if no
4059 -- actual parameter part)
4060 -- First_Named_Actual (Node4-Sem)
4061 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4062 -- Do_Tag_Check (Flag13-Sem)
4063 -- No_Elaboration_Check (Flag14-Sem)
4064 -- Parameter_List_Truncated (Flag17-Sem)
4065 -- ABE_Is_Certain (Flag18-Sem)
4066 -- plus fields for expression
4068 -- If any IN parameter requires a range check, then the corresponding
4069 -- argument expression has the Do_Range_Check flag set, and the range
4070 -- check is done against the formal type. Note that this argument
4071 -- expression may appear directly in the Parameter_Associations list,
4072 -- or may be a descendent of an N_Parameter_Association node that
4073 -- appears in this list.
4075 ------------------------
4076 -- 6.4 Function Call --
4077 ------------------------
4079 -- FUNCTION_CALL ::=
4080 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
4082 -- Note: the parser may generate an indexed component node or simply
4083 -- a name node instead of a function call node. The semantic pass must
4084 -- correct this misidentification.
4087 -- Sloc points to first token of name or prefix
4088 -- Name (Node2) stores name or prefix
4089 -- Parameter_Associations (List3) (set to No_List if no
4090 -- actual parameter part)
4091 -- First_Named_Actual (Node4-Sem)
4092 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4093 -- Do_Tag_Check (Flag13-Sem)
4094 -- No_Elaboration_Check (Flag14-Sem)
4095 -- Parameter_List_Truncated (Flag17-Sem)
4096 -- ABE_Is_Certain (Flag18-Sem)
4097 -- plus fields for expression
4099 --------------------------------
4100 -- 6.4 Actual Parameter Part --
4101 --------------------------------
4103 -- ACTUAL_PARAMETER_PART ::=
4104 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
4106 --------------------------------
4107 -- 6.4 Parameter Association --
4108 --------------------------------
4110 -- PARAMETER_ASSOCIATION ::=
4111 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
4113 -- Note: the N_Parameter_Association node is built only if a formal
4114 -- parameter selector name is present, otherwise the parameter
4115 -- association appears in the tree simply as the node for the
4116 -- explicit actual parameter.
4118 -- N_Parameter_Association
4119 -- Sloc points to formal parameter
4120 -- Selector_Name (Node2) (always non-Empty, since this node is
4121 -- only used if a formal parameter selector name is present)
4122 -- Explicit_Actual_Parameter (Node3)
4123 -- Next_Named_Actual (Node4-Sem)
4125 ---------------------------
4126 -- 6.4 Actual Parameter --
4127 ---------------------------
4129 -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
4131 ---------------------------
4132 -- 6.5 Return Statement --
4133 ---------------------------
4135 -- RETURN_STATEMENT ::= return [EXPRESSION];
4137 -- N_Return_Statement
4138 -- Sloc points to RETURN
4139 -- Expression (Node3) (set to Empty if no expression present)
4140 -- Storage_Pool (Node1-Sem)
4141 -- Procedure_To_Call (Node4-Sem)
4142 -- Do_Tag_Check (Flag13-Sem)
4143 -- Return_Type (Node2-Sem)
4144 -- By_Ref (Flag5-Sem)
4146 -- Note: if a range check is required, then Do_Range_Check is set
4147 -- on the Expression. The range check is against Return_Type.
4149 ------------------------------
4150 -- 7.1 Package Declaration --
4151 ------------------------------
4153 -- PACKAGE_DECLARATION ::= PACKAGE_SPECIFICATION;
4155 -- Note: the activation chain entity for a package spec is used for
4156 -- all tasks declared in the package spec, or in the package body.
4158 -- N_Package_Declaration
4159 -- Sloc points to PACKAGE
4160 -- Specification (Node1)
4161 -- Corresponding_Body (Node5-Sem)
4162 -- Parent_Spec (Node4-Sem)
4163 -- Activation_Chain_Entity (Node3-Sem)
4165 --------------------------------
4166 -- 7.1 Package Specification --
4167 --------------------------------
4169 -- PACKAGE_SPECIFICATION ::=
4170 -- package DEFINING_PROGRAM_UNIT_NAME is
4171 -- {BASIC_DECLARATIVE_ITEM}
4173 -- {BASIC_DECLARATIVE_ITEM}]
4174 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
4176 -- N_Package_Specification
4177 -- Sloc points to PACKAGE
4178 -- Defining_Unit_Name (Node1)
4179 -- Visible_Declarations (List2)
4180 -- Private_Declarations (List3) (set to No_List if no private
4182 -- End_Label (Node4)
4183 -- Generic_Parent (Node5-Sem)
4184 -- Limited_View_Installed (Flag18-Sem)
4186 -----------------------
4187 -- 7.1 Package Body --
4188 -----------------------
4191 -- package body DEFINING_PROGRAM_UNIT_NAME is
4194 -- HANDLED_SEQUENCE_OF_STATEMENTS]
4195 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
4198 -- Sloc points to PACKAGE
4199 -- Defining_Unit_Name (Node1)
4200 -- Declarations (List2)
4201 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
4202 -- Corresponding_Spec (Node5-Sem)
4203 -- Was_Originally_Stub (Flag13-Sem)
4205 -- Note: if a source level package does not contain a handled sequence
4206 -- of statements, then the parser supplies a dummy one with a null
4207 -- sequence of statements. Comes_From_Source will be False in this
4208 -- constructed sequence. The reason we need this is for the End_Label
4209 -- field in the HSS.
4211 -----------------------------------
4212 -- 7.4 Private Type Declaration --
4213 -----------------------------------
4215 -- PRIVATE_TYPE_DECLARATION ::=
4216 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
4217 -- is [[abstract] tagged] [limited] private;
4219 -- Note: TAGGED is not permitted in Ada 83 mode
4221 -- N_Private_Type_Declaration
4222 -- Sloc points to TYPE
4223 -- Defining_Identifier (Node1)
4224 -- Discriminant_Specifications (List4) (set to No_List if no
4225 -- discriminant part)
4226 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4227 -- Abstract_Present (Flag4)
4228 -- Tagged_Present (Flag15)
4229 -- Limited_Present (Flag17)
4231 ----------------------------------------
4232 -- 7.4 Private Extension Declaration --
4233 ----------------------------------------
4235 -- PRIVATE_EXTENSION_DECLARATION ::=
4236 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
4237 -- [abstract] new ancestor_SUBTYPE_INDICATION with private;
4239 -- Note: private extension declarations are not allowed in Ada 83 mode
4241 -- N_Private_Extension_Declaration
4242 -- Sloc points to TYPE
4243 -- Defining_Identifier (Node1)
4244 -- Discriminant_Specifications (List4) (set to No_List if no
4245 -- discriminant part)
4246 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4247 -- Abstract_Present (Flag4)
4248 -- Subtype_Indication (Node5)
4250 ---------------------
4251 -- 8.4 Use Clause --
4252 ---------------------
4254 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
4256 -----------------------------
4257 -- 8.4 Use Package Clause --
4258 -----------------------------
4260 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
4262 -- N_Use_Package_Clause
4263 -- Sloc points to USE
4265 -- Next_Use_Clause (Node3-Sem)
4266 -- Hidden_By_Use_Clause (Elist4-Sem)
4268 --------------------------
4269 -- 8.4 Use Type Clause --
4270 --------------------------
4272 -- USE_TYPE_CLAUSE ::= use type SUBTYPE_MARK {, SUBTYPE_MARK};
4274 -- Note: use type clause is not permitted in Ada 83 mode
4276 -- N_Use_Type_Clause
4277 -- Sloc points to USE
4278 -- Subtype_Marks (List2)
4279 -- Next_Use_Clause (Node3-Sem)
4280 -- Hidden_By_Use_Clause (Elist4-Sem)
4282 -------------------------------
4283 -- 8.5 Renaming Declaration --
4284 -------------------------------
4286 -- RENAMING_DECLARATION ::=
4287 -- OBJECT_RENAMING_DECLARATION
4288 -- | EXCEPTION_RENAMING_DECLARATION
4289 -- | PACKAGE_RENAMING_DECLARATION
4290 -- | SUBPROGRAM_RENAMING_DECLARATION
4291 -- | GENERIC_RENAMING_DECLARATION
4293 --------------------------------------
4294 -- 8.5 Object Renaming Declaration --
4295 --------------------------------------
4297 -- OBJECT_RENAMING_DECLARATION ::=
4298 -- DEFINING_IDENTIFIER : SUBTYPE_MARK renames object_NAME;
4299 -- | DEFINING_IDENTIFIER : ACCESS_DEFINITION renames object_NAME;
4301 -- Note: Access_Definition is an optional field that gives support to
4302 -- Ada 0Y (AI-230). The parser generates nodes that have either the
4303 -- Subtype_Indication field or else the Access_Definition field.
4305 -- N_Object_Renaming_Declaration
4306 -- Sloc points to first identifier
4307 -- Defining_Identifier (Node1)
4308 -- Subtype_Mark (Node4) (set to Empty if not present)
4309 -- Access_Definition (Node3) (set to Empty if not present)
4311 -- Corresponding_Generic_Association (Node5-Sem)
4313 -----------------------------------------
4314 -- 8.5 Exception Renaming Declaration --
4315 -----------------------------------------
4317 -- EXCEPTION_RENAMING_DECLARATION ::=
4318 -- DEFINING_IDENTIFIER : exception renames exception_NAME;
4320 -- N_Exception_Renaming_Declaration
4321 -- Sloc points to first identifier
4322 -- Defining_Identifier (Node1)
4325 ---------------------------------------
4326 -- 8.5 Package Renaming Declaration --
4327 ---------------------------------------
4329 -- PACKAGE_RENAMING_DECLARATION ::=
4330 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME;
4332 -- N_Package_Renaming_Declaration
4333 -- Sloc points to PACKAGE
4334 -- Defining_Unit_Name (Node1)
4336 -- Parent_Spec (Node4-Sem)
4338 ------------------------------------------
4339 -- 8.5 Subprogram Renaming Declaration --
4340 ------------------------------------------
4342 -- SUBPROGRAM_RENAMING_DECLARATION ::=
4343 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME;
4345 -- N_Subprogram_Renaming_Declaration
4346 -- Sloc points to RENAMES
4347 -- Specification (Node1)
4349 -- Parent_Spec (Node4-Sem)
4350 -- Corresponding_Spec (Node5-Sem)
4351 -- From_Default (Flag6-Sem)
4353 -----------------------------------------
4354 -- 8.5.5 Generic Renaming Declaration --
4355 -----------------------------------------
4357 -- GENERIC_RENAMING_DECLARATION ::=
4358 -- generic package DEFINING_PROGRAM_UNIT_NAME
4359 -- renames generic_package_NAME
4360 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
4361 -- renames generic_procedure_NAME
4362 -- | generic function DEFINING_PROGRAM_UNIT_NAME
4363 -- renames generic_function_NAME
4365 -- N_Generic_Package_Renaming_Declaration
4366 -- Sloc points to GENERIC
4367 -- Defining_Unit_Name (Node1)
4369 -- Parent_Spec (Node4-Sem)
4371 -- N_Generic_Procedure_Renaming_Declaration
4372 -- Sloc points to GENERIC
4373 -- Defining_Unit_Name (Node1)
4375 -- Parent_Spec (Node4-Sem)
4377 -- N_Generic_Function_Renaming_Declaration
4378 -- Sloc points to GENERIC
4379 -- Defining_Unit_Name (Node1)
4381 -- Parent_Spec (Node4-Sem)
4383 --------------------------------
4384 -- 9.1 Task Type Declaration --
4385 --------------------------------
4387 -- TASK_TYPE_DECLARATION ::=
4388 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4389 -- [is TASK_DEFINITITION];
4391 -- N_Task_Type_Declaration
4392 -- Sloc points to TASK
4393 -- Defining_Identifier (Node1)
4394 -- Task_Body_Procedure (Node2-Sem)
4395 -- Discriminant_Specifications (List4) (set to No_List if no
4396 -- discriminant part)
4397 -- Task_Definition (Node3) (set to Empty if not present)
4398 -- Corresponding_Body (Node5-Sem)
4400 ----------------------------------
4401 -- 9.1 Single Task Declaration --
4402 ----------------------------------
4404 -- SINGLE_TASK_DECLARATION ::=
4405 -- task DEFINING_IDENTIFIER [is TASK_DEFINITION];
4407 -- N_Single_Task_Declaration
4408 -- Sloc points to TASK
4409 -- Defining_Identifier (Node1)
4410 -- Task_Definition (Node3) (set to Empty if not present)
4412 --------------------------
4413 -- 9.1 Task Definition --
4414 --------------------------
4416 -- TASK_DEFINITION ::=
4420 -- end [task_IDENTIFIER]
4422 -- Note: as a result of semantic analysis, the list of task items can
4423 -- include implicit type declarations resulting from entry families.
4425 -- N_Task_Definition
4426 -- Sloc points to first token of task definition
4427 -- Visible_Declarations (List2)
4428 -- Private_Declarations (List3) (set to No_List if no private part)
4429 -- End_Label (Node4)
4430 -- Has_Priority_Pragma (Flag6-Sem)
4431 -- Has_Storage_Size_Pragma (Flag5-Sem)
4432 -- Has_Task_Info_Pragma (Flag7-Sem)
4433 -- Has_Task_Name_Pragma (Flag8-Sem)
4435 --------------------
4437 --------------------
4439 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
4441 --------------------
4443 --------------------
4446 -- task body task_DEFINING_IDENTIFIER is
4449 -- HANDLED_SEQUENCE_OF_STATEMENTS
4450 -- end [task_IDENTIFIER];
4452 -- Gigi restriction: This node never appears.
4455 -- Sloc points to TASK
4456 -- Defining_Identifier (Node1)
4457 -- Declarations (List2)
4458 -- Handled_Statement_Sequence (Node4)
4459 -- Is_Task_Master (Flag5-Sem)
4460 -- Activation_Chain_Entity (Node3-Sem)
4461 -- Corresponding_Spec (Node5-Sem)
4462 -- Was_Originally_Stub (Flag13-Sem)
4464 -------------------------------------
4465 -- 9.4 Protected Type Declaration --
4466 -------------------------------------
4468 -- PROTECTED_TYPE_DECLARATION ::=
4469 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4470 -- is PROTECTED_DEFINITION;
4472 -- Note: protected type declarations are not permitted in Ada 83 mode
4474 -- N_Protected_Type_Declaration
4475 -- Sloc points to PROTECTED
4476 -- Defining_Identifier (Node1)
4477 -- Discriminant_Specifications (List4) (set to No_List if no
4478 -- discriminant part)
4479 -- Protected_Definition (Node3)
4480 -- Corresponding_Body (Node5-Sem)
4482 ---------------------------------------
4483 -- 9.4 Single Protected Declaration --
4484 ---------------------------------------
4486 -- SINGLE_PROTECTED_DECLARATION ::=
4487 -- protected DEFINING_IDENTIFIER is PROTECTED_DEFINITION;
4489 -- Note: single protected declarations are not allowed in Ada 83 mode
4491 -- N_Single_Protected_Declaration
4492 -- Sloc points to PROTECTED
4493 -- Defining_Identifier (Node1)
4494 -- Protected_Definition (Node3)
4496 -------------------------------
4497 -- 9.4 Protected Definition --
4498 -------------------------------
4500 -- PROTECTED_DEFINITION ::=
4501 -- {PROTECTED_OPERATION_DECLARATION}
4503 -- {PROTECTED_ELEMENT_DECLARATION}]
4504 -- end [protected_IDENTIFIER]
4506 -- N_Protected_Definition
4507 -- Sloc points to first token of protected definition
4508 -- Visible_Declarations (List2)
4509 -- Private_Declarations (List3) (set to No_List if no private part)
4510 -- End_Label (Node4)
4511 -- Has_Priority_Pragma (Flag6-Sem)
4513 ------------------------------------------
4514 -- 9.4 Protected Operation Declaration --
4515 ------------------------------------------
4517 -- PROTECTED_OPERATION_DECLARATION ::=
4518 -- SUBPROGRAM_DECLARATION
4519 -- | ENTRY_DECLARATION
4520 -- | REPRESENTATION_CLAUSE
4522 ----------------------------------------
4523 -- 9.4 Protected Element Declaration --
4524 ----------------------------------------
4526 -- PROTECTED_ELEMENT_DECLARATION ::=
4527 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
4529 -------------------------
4530 -- 9.4 Protected Body --
4531 -------------------------
4533 -- PROTECTED_BODY ::=
4534 -- protected body DEFINING_IDENTIFIER is
4535 -- {PROTECTED_OPERATION_ITEM}
4536 -- end [protected_IDENTIFIER];
4538 -- Note: protected bodies are not allowed in Ada 83 mode
4540 -- Gigi restriction: This node never appears.
4543 -- Sloc points to PROTECTED
4544 -- Defining_Identifier (Node1)
4545 -- Declarations (List2) protected operation items (and pragmas)
4546 -- End_Label (Node4)
4547 -- Corresponding_Spec (Node5-Sem)
4548 -- Was_Originally_Stub (Flag13-Sem)
4550 -----------------------------------
4551 -- 9.4 Protected Operation Item --
4552 -----------------------------------
4554 -- PROTECTED_OPERATION_ITEM ::=
4555 -- SUBPROGRAM_DECLARATION
4556 -- | SUBPROGRAM_BODY
4558 -- | REPRESENTATION_CLAUSE
4560 ------------------------------
4561 -- 9.5.2 Entry Declaration --
4562 ------------------------------
4564 -- ENTRY_DECLARATION ::=
4565 -- entry DEFINING_IDENTIFIER
4566 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE;
4568 -- N_Entry_Declaration
4569 -- Sloc points to ENTRY
4570 -- Defining_Identifier (Node1)
4571 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
4572 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4573 -- Corresponding_Body (Node5-Sem)
4575 -----------------------------
4576 -- 9.5.2 Accept statement --
4577 -----------------------------
4579 -- ACCEPT_STATEMENT ::=
4580 -- accept entry_DIRECT_NAME
4581 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
4582 -- HANDLED_SEQUENCE_OF_STATEMENTS
4583 -- end [entry_IDENTIFIER]];
4585 -- Gigi restriction: This node never appears.
4587 -- Note: there are no explicit declarations allowed in an accept
4588 -- statement. However, the implicit declarations for any statement
4589 -- identifiers (labels and block/loop identifiers) are declarations
4590 -- that belong logically to the accept statement, and that is why
4591 -- there is a Declarations field in this node.
4593 -- N_Accept_Statement
4594 -- Sloc points to ACCEPT
4595 -- Entry_Direct_Name (Node1)
4596 -- Entry_Index (Node5) (set to Empty if not present)
4597 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4598 -- Handled_Statement_Sequence (Node4)
4599 -- Declarations (List2) (set to No_List if no declarations)
4601 ------------------------
4602 -- 9.5.2 Entry Index --
4603 ------------------------
4605 -- ENTRY_INDEX ::= EXPRESSION
4607 -----------------------
4608 -- 9.5.2 Entry Body --
4609 -----------------------
4612 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
4615 -- HANDLED_SEQUENCE_OF_STATEMENTS
4616 -- end [entry_IDENTIFIER];
4618 -- ENTRY_BARRIER ::= when CONDITION
4620 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
4621 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
4622 -- too full (it would otherwise have too many fields)
4624 -- Gigi restriction: This node never appears.
4627 -- Sloc points to ENTRY
4628 -- Defining_Identifier (Node1)
4629 -- Entry_Body_Formal_Part (Node5)
4630 -- Declarations (List2)
4631 -- Handled_Statement_Sequence (Node4)
4632 -- Activation_Chain_Entity (Node3-Sem)
4634 -----------------------------------
4635 -- 9.5.2 Entry Body Formal Part --
4636 -----------------------------------
4638 -- ENTRY_BODY_FORMAL_PART ::=
4639 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
4641 -- Note that an entry body formal part node is present even if it is
4642 -- empty. This reflects the grammar, in which it is the components of
4643 -- the entry body formal part that are optional, not the entry body
4644 -- formal part itself. Also this means that the barrier condition
4645 -- always has somewhere to be stored.
4647 -- Gigi restriction: This node never appears.
4649 -- N_Entry_Body_Formal_Part
4650 -- Sloc points to first token
4651 -- Entry_Index_Specification (Node4) (set to Empty if not present)
4652 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4653 -- Condition (Node1) from entry barrier of entry body
4655 --------------------------
4656 -- 9.5.2 Entry Barrier --
4657 --------------------------
4659 -- ENTRY_BARRIER ::= when CONDITION
4661 --------------------------------------
4662 -- 9.5.2 Entry Index Specification --
4663 --------------------------------------
4665 -- ENTRY_INDEX_SPECIFICATION ::=
4666 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
4668 -- Gigi restriction: This node never appears.
4670 -- N_Entry_Index_Specification
4671 -- Sloc points to FOR
4672 -- Defining_Identifier (Node1)
4673 -- Discrete_Subtype_Definition (Node4)
4675 ---------------------------------
4676 -- 9.5.3 Entry Call Statement --
4677 ---------------------------------
4679 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
4681 -- The parser may generate a procedure call for this construct. The
4682 -- semantic pass must correct this misidentification where needed.
4684 -- Gigi restriction: This node never appears.
4686 -- N_Entry_Call_Statement
4687 -- Sloc points to first token of name
4689 -- Parameter_Associations (List3) (set to No_List if no
4690 -- actual parameter part)
4691 -- First_Named_Actual (Node4-Sem)
4693 ------------------------------
4694 -- 9.5.4 Requeue Statement --
4695 ------------------------------
4697 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
4699 -- Note: requeue statements are not permitted in Ada 83 mode
4701 -- Gigi restriction: This node never appears.
4703 -- N_Requeue_Statement
4704 -- Sloc points to REQUEUE
4706 -- Abort_Present (Flag15)
4708 --------------------------
4709 -- 9.6 Delay Statement --
4710 --------------------------
4712 -- DELAY_STATEMENT ::=
4713 -- DELAY_UNTIL_STATEMENT
4714 -- | DELAY_RELATIVE_STATEMENT
4716 --------------------------------
4717 -- 9.6 Delay Until Statement --
4718 --------------------------------
4720 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
4722 -- Note: delay until statements are not permitted in Ada 83 mode
4724 -- Gigi restriction: This node never appears.
4726 -- N_Delay_Until_Statement
4727 -- Sloc points to DELAY
4728 -- Expression (Node3)
4730 -----------------------------------
4731 -- 9.6 Delay Relative Statement --
4732 -----------------------------------
4734 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
4736 -- Gigi restriction: This node never appears.
4738 -- N_Delay_Relative_Statement
4739 -- Sloc points to DELAY
4740 -- Expression (Node3)
4742 ---------------------------
4743 -- 9.7 Select Statement --
4744 ---------------------------
4746 -- SELECT_STATEMENT ::=
4748 -- | TIMED_ENTRY_CALL
4749 -- | CONDITIONAL_ENTRY_CALL
4750 -- | ASYNCHRONOUS_SELECT
4752 -----------------------------
4753 -- 9.7.1 Selective Accept --
4754 -----------------------------
4756 -- SELECTIVE_ACCEPT ::=
4759 -- SELECT_ALTERNATIVE
4762 -- SELECT_ALTERNATIVE}
4764 -- SEQUENCE_OF_STATEMENTS]
4767 -- Gigi restriction: This node never appears.
4769 -- Note: the guard expression, if present, appears in the node for
4770 -- the select alternative.
4772 -- N_Selective_Accept
4773 -- Sloc points to SELECT
4774 -- Select_Alternatives (List1)
4775 -- Else_Statements (List4) (set to No_List if no else part)
4781 -- GUARD ::= when CONDITION =>
4783 -- As noted above, the CONDITION that is part of a GUARD is included
4784 -- in the node for the select alernative for convenience.
4786 -------------------------------
4787 -- 9.7.1 Select Alternative --
4788 -------------------------------
4790 -- SELECT_ALTERNATIVE ::=
4791 -- ACCEPT_ALTERNATIVE
4792 -- | DELAY_ALTERNATIVE
4793 -- | TERMINATE_ALTERNATIVE
4795 -------------------------------
4796 -- 9.7.1 Accept Alternative --
4797 -------------------------------
4799 -- ACCEPT_ALTERNATIVE ::=
4800 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
4802 -- Gigi restriction: This node never appears.
4804 -- N_Accept_Alternative
4805 -- Sloc points to ACCEPT
4806 -- Accept_Statement (Node2)
4807 -- Condition (Node1) from the guard (set to Empty if no guard present)
4808 -- Statements (List3) (set to Empty_List if no statements)
4809 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4810 -- Accept_Handler_Records (List5-Sem)
4812 ------------------------------
4813 -- 9.7.1 Delay Alternative --
4814 ------------------------------
4816 -- DELAY_ALTERNATIVE ::=
4817 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
4819 -- Gigi restriction: This node never appears.
4821 -- N_Delay_Alternative
4822 -- Sloc points to DELAY
4823 -- Delay_Statement (Node2)
4824 -- Condition (Node1) from the guard (set to Empty if no guard present)
4825 -- Statements (List3) (set to Empty_List if no statements)
4826 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4828 ----------------------------------
4829 -- 9.7.1 Terminate Alternative --
4830 ----------------------------------
4832 -- TERMINATE_ALTERNATIVE ::= terminate;
4834 -- Gigi restriction: This node never appears.
4836 -- N_Terminate_Alternative
4837 -- Sloc points to TERMINATE
4838 -- Condition (Node1) from the guard (set to Empty if no guard present)
4839 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4840 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
4842 -----------------------------
4843 -- 9.7.2 Timed Entry Call --
4844 -----------------------------
4846 -- TIMED_ENTRY_CALL ::=
4848 -- ENTRY_CALL_ALTERNATIVE
4850 -- DELAY_ALTERNATIVE
4853 -- Gigi restriction: This node never appears.
4855 -- N_Timed_Entry_Call
4856 -- Sloc points to SELECT
4857 -- Entry_Call_Alternative (Node1)
4858 -- Delay_Alternative (Node4)
4860 -----------------------------------
4861 -- 9.7.2 Entry Call Alternative --
4862 -----------------------------------
4864 -- ENTRY_CALL_ALTERNATIVE ::=
4865 -- ENTRY_CALL_STATEMENT [SEQUENCE_OF_STATEMENTS]
4867 -- Gigi restriction: This node never appears.
4869 -- N_Entry_Call_Alternative
4870 -- Sloc points to first token of entry call statement
4871 -- Entry_Call_Statement (Node1)
4872 -- Statements (List3) (set to Empty_List if no statements)
4873 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4875 -----------------------------------
4876 -- 9.7.3 Conditional Entry Call --
4877 -----------------------------------
4879 -- CONDITIONAL_ENTRY_CALL ::=
4881 -- ENTRY_CALL_ALTERNATIVE
4883 -- SEQUENCE_OF_STATEMENTS
4886 -- Gigi restriction: This node never appears.
4888 -- N_Conditional_Entry_Call
4889 -- Sloc points to SELECT
4890 -- Entry_Call_Alternative (Node1)
4891 -- Else_Statements (List4)
4893 --------------------------------
4894 -- 9.7.4 Asynchronous Select --
4895 --------------------------------
4897 -- ASYNCHRONOUS_SELECT ::=
4899 -- TRIGGERING_ALTERNATIVE
4904 -- Note: asynchronous select is not permitted in Ada 83 mode
4906 -- Gigi restriction: This node never appears.
4908 -- N_Asynchronous_Select
4909 -- Sloc points to SELECT
4910 -- Triggering_Alternative (Node1)
4911 -- Abortable_Part (Node2)
4913 -----------------------------------
4914 -- 9.7.4 Triggering Alternative --
4915 -----------------------------------
4917 -- TRIGGERING_ALTERNATIVE ::=
4918 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
4920 -- Gigi restriction: This node never appears.
4922 -- N_Triggering_Alternative
4923 -- Sloc points to first token of triggering statement
4924 -- Triggering_Statement (Node1)
4925 -- Statements (List3) (set to Empty_List if no statements)
4926 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4928 ---------------------------------
4929 -- 9.7.4 Triggering Statement --
4930 ---------------------------------
4932 -- TRIGGERING_STATEMENT ::= ENTRY_CALL_STATEMENT | DELAY_STATEMENT
4934 ---------------------------
4935 -- 9.7.4 Abortable Part --
4936 ---------------------------
4938 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
4940 -- Gigi restriction: This node never appears.
4943 -- Sloc points to ABORT
4944 -- Statements (List3)
4946 --------------------------
4947 -- 9.8 Abort Statement --
4948 --------------------------
4950 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
4952 -- Gigi restriction: This node never appears.
4954 -- N_Abort_Statement
4955 -- Sloc points to ABORT
4958 -------------------------
4959 -- 10.1.1 Compilation --
4960 -------------------------
4962 -- COMPILATION ::= {COMPILATION_UNIT}
4964 -- There is no explicit node in the tree for a compilation, since in
4965 -- general the compiler is processing only a single compilation unit
4966 -- at a time. It is possible to parse multiple units in syntax check
4967 -- only mode, but they the trees are discarded in any case.
4969 ------------------------------
4970 -- 10.1.1 Compilation Unit --
4971 ------------------------------
4973 -- COMPILATION_UNIT ::=
4974 -- CONTEXT_CLAUSE LIBRARY_ITEM
4975 -- | CONTEXT_CLAUSE SUBUNIT
4977 -- The N_Compilation_Unit node itself respresents the above syntax.
4978 -- However, there are two additional items not reflected in the above
4979 -- syntax. First we have the global declarations that are added by the
4980 -- code generator. These are outer level declarations (so they cannot
4981 -- be represented as being inside the units). An example is the wrapper
4982 -- subprograms that are created to do ABE checking. As always a list of
4983 -- declarations can contain actions as well (i.e. statements), and such
4984 -- statements are executed as part of the elaboration of the unit. Note
4985 -- that all such declarations are elaborated before the library unit.
4987 -- Similarly, certain actions need to be elaborated at the completion
4988 -- of elaboration of the library unit (notably the statement that sets
4989 -- the Boolean flag indicating that elaboration is complete).
4991 -- The third item not reflected in the syntax is pragmas that appear
4992 -- after the compilation unit. As always pragmas are a problem since
4993 -- they are not part of the formal syntax, but can be stuck into the
4994 -- source following a set of ad hoc rules, and we have to find an ad
4995 -- hoc way of sticking them into the tree. For pragmas that appear
4996 -- before the library unit, we just consider them to be part of the
4997 -- context clause, and pragmas can appear in the Context_Items list
4998 -- of the compilation unit. However, pragmas can also appear after
4999 -- the library item.
5001 -- To deal with all these problems, we create an auxiliary node for
5002 -- a compilation unit, referenced from the N_Compilation_Unit node
5003 -- that contains these three items.
5005 -- N_Compilation_Unit
5006 -- Sloc points to first token of defining unit name
5007 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
5008 -- Context_Items (List1) context items and pragmas preceding unit
5009 -- Private_Present (Flag15) set if library unit has private keyword
5010 -- Unit (Node2) library item or subunit
5011 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
5012 -- Has_No_Elaboration_Code (Flag17-Sem)
5013 -- Body_Required (Flag13-Sem) set for spec if body is required
5014 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
5015 -- First_Inlined_Subprogram (Node3-Sem)
5017 -- N_Compilation_Unit_Aux
5018 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
5019 -- Declarations (List2) (set to No_List if no global declarations)
5020 -- Actions (List1) (set to No_List if no actions)
5021 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
5022 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
5024 --------------------------
5025 -- 10.1.1 Library Item --
5026 --------------------------
5029 -- [private] LIBRARY_UNIT_DECLARATION
5030 -- | LIBRARY_UNIT_BODY
5031 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
5033 -- Note: PRIVATE is not allowed in Ada 83 mode
5035 -- There is no explicit node in the tree for library item, instead
5036 -- the declaration or body, and the flag for private if present,
5037 -- appear in the N_Compilation_Unit clause.
5039 ----------------------------------------
5040 -- 10.1.1 Library Unit Declararation --
5041 ----------------------------------------
5043 -- LIBRARY_UNIT_DECLARATION ::=
5044 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
5045 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
5047 -------------------------------------------------
5048 -- 10.1.1 Library Unit Renaming Declararation --
5049 -------------------------------------------------
5051 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
5052 -- PACKAGE_RENAMING_DECLARATION
5053 -- | GENERIC_RENAMING_DECLARATION
5054 -- | SUBPROGRAM_RENAMING_DECLARATION
5056 -------------------------------
5057 -- 10.1.1 Library unit body --
5058 -------------------------------
5060 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
5062 ------------------------------
5063 -- 10.1.1 Parent Unit Name --
5064 ------------------------------
5066 -- PARENT_UNIT_NAME ::= NAME
5068 ----------------------------
5069 -- 10.1.2 Context clause --
5070 ----------------------------
5072 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
5074 -- The context clause can include pragmas, and any pragmas that appear
5075 -- before the context clause proper (i.e. all configuration pragmas,
5076 -- also appear at the front of this list).
5078 --------------------------
5079 -- 10.1.2 Context_Item --
5080 --------------------------
5082 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
5084 -------------------------
5085 -- 10.1.2 With clause --
5086 -------------------------
5089 -- with library_unit_NAME {,library_unit_NAME};
5091 -- A separate With clause is built for each name, so that we have
5092 -- a Corresponding_Spec field for each with'ed spec. The flags
5093 -- First_Name and Last_Name are used to reconstruct the exact
5094 -- source form. When a list of names appears in one with clause,
5095 -- the first name in the list has First_Name set, and the last
5096 -- has Last_Name set. If the with clause has only one name, then
5097 -- both of the flags First_Name and Last_Name are set in this name.
5099 -- Note: in the case of implicit with's that are installed by the
5100 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
5101 -- set to Standard_Location, but it is incorrect to test the Sloc
5102 -- to find out if a with clause is implicit, test the flag instead.
5105 -- Sloc points to first token of library unit name
5107 -- Library_Unit (Node4-Sem)
5108 -- Corresponding_Spec (Node5-Sem)
5109 -- First_Name (Flag5) (set to True if first name or only one name)
5110 -- Last_Name (Flag6) (set to True if last name or only one name)
5111 -- Context_Installed (Flag13-Sem)
5112 -- Elaborate_Present (Flag4-Sem)
5113 -- Elaborate_All_Present (Flag14-Sem)
5114 -- Private_Present (Flag15) set if with_clause has private keyword
5115 -- Implicit_With (Flag16-Sem)
5116 -- Limited_Present (Flag17) set if LIMITED is present
5117 -- Limited_View_Installed (Flag18-Sem)
5118 -- Unreferenced_In_Spec (Flag7-Sem)
5119 -- No_Entities_Ref_In_Spec (Flag8-Sem)
5121 -- Note: Limited_Present and Limited_View_Installed give support to
5122 -- Ada 0Y (AI-50217).
5123 -- Similarly, Private_Present gives support to AI-50262.
5125 ----------------------
5126 -- With_Type clause --
5127 ----------------------
5129 -- This is a GNAT extension, used to implement mutually recursive
5130 -- types declared in different packages.
5132 -- WITH_TYPE_CLAUSE ::=
5133 -- with type type_NAME is access | with type type_NAME is tagged
5135 -- N_With_Type_Clause
5136 -- Sloc points to first token of type name
5138 -- Tagged_Present (Flag15)
5140 ---------------------
5141 -- 10.2 Body stub --
5142 ---------------------
5145 -- SUBPROGRAM_BODY_STUB
5146 -- | PACKAGE_BODY_STUB
5148 -- | PROTECTED_BODY_STUB
5150 ----------------------------------
5151 -- 10.1.3 Subprogram Body Stub --
5152 ----------------------------------
5154 -- SUBPROGRAM_BODY_STUB ::=
5155 -- SUBPROGRAM_SPECIFICATION is separate;
5157 -- N_Subprogram_Body_Stub
5158 -- Sloc points to FUNCTION or PROCEDURE
5159 -- Specification (Node1)
5160 -- Library_Unit (Node4-Sem) points to the subunit
5161 -- Corresponding_Body (Node5-Sem)
5163 -------------------------------
5164 -- 10.1.3 Package Body Stub --
5165 -------------------------------
5167 -- PACKAGE_BODY_STUB ::=
5168 -- package body DEFINING_IDENTIFIER is separate;
5170 -- N_Package_Body_Stub
5171 -- Sloc points to PACKAGE
5172 -- Defining_Identifier (Node1)
5173 -- Library_Unit (Node4-Sem) points to the subunit
5174 -- Corresponding_Body (Node5-Sem)
5176 ----------------------------
5177 -- 10.1.3 Task Body Stub --
5178 ----------------------------
5180 -- TASK_BODY_STUB ::=
5181 -- task body DEFINING_IDENTIFIER is separate;
5184 -- Sloc points to TASK
5185 -- Defining_Identifier (Node1)
5186 -- Library_Unit (Node4-Sem) points to the subunit
5187 -- Corresponding_Body (Node5-Sem)
5189 ---------------------------------
5190 -- 10.1.3 Protected Body Stub --
5191 ---------------------------------
5193 -- PROTECTED_BODY_STUB ::=
5194 -- protected body DEFINING_IDENTIFIER is separate;
5196 -- Note: protected body stubs are not allowed in Ada 83 mode
5198 -- N_Protected_Body_Stub
5199 -- Sloc points to PROTECTED
5200 -- Defining_Identifier (Node1)
5201 -- Library_Unit (Node4-Sem) points to the subunit
5202 -- Corresponding_Body (Node5-Sem)
5204 ---------------------
5205 -- 10.1.3 Subunit --
5206 ---------------------
5208 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
5211 -- Sloc points to SEPARATE
5212 -- Name (Node2) is the name of the parent unit
5213 -- Proper_Body (Node1) is the subunit body
5214 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
5216 ---------------------------------
5217 -- 11.1 Exception Declaration --
5218 ---------------------------------
5220 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception;
5222 -- For consistency with object declarations etc, the parser converts
5223 -- the case of multiple identifiers being declared to a series of
5224 -- declarations in which the expression is copied, using the More_Ids
5225 -- and Prev_Ids flags to remember the souce form as described in the
5226 -- section on "Handling of Defining Identifier Lists".
5228 -- N_Exception_Declaration
5229 -- Sloc points to EXCEPTION
5230 -- Defining_Identifier (Node1)
5231 -- Expression (Node3-Sem)
5232 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5233 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5235 ------------------------------------------
5236 -- 11.2 Handled Sequence Of Statements --
5237 ------------------------------------------
5239 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
5240 -- SEQUENCE_OF_STATEMENTS
5242 -- EXCEPTION_HANDLER
5243 -- {EXCEPTION_HANDLER}]
5245 -- cleanup_procedure_call (param, param, param, ...);]
5247 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
5248 -- used only internally currently, but is considered to be syntactic.
5249 -- At the moment, the only cleanup action allowed is a single call to
5250 -- a parameterless procedure, and the Identifier field of the node is
5251 -- the procedure to be called. Also there is a current restriction
5252 -- that exception handles and a cleanup cannot be present in the same
5253 -- frame, so at least one of Exception_Handlers or the Identifier must
5256 -- Actually, more accurately, this restriction applies to the original
5257 -- source program. In the expanded tree, if the At_End_Proc field is
5258 -- present, then there will also be an exception handler of the form:
5260 -- when all others =>
5264 -- where cleanup is the procedure to be generated. The reason we do
5265 -- this is so that the front end can handle the necessary entries in
5266 -- the exception tables, and other exception handler actions required
5267 -- as part of the normal handling for exception handlers.
5269 -- The AT END cleanup handler protects only the sequence of statements
5270 -- (not the associated declarations of the parent), just like exception
5271 -- handlers. The big difference is that the cleanup procedure is called
5272 -- on either a normal or an abnormal exit from the statement sequence.
5274 -- Note: the list of Exception_Handlers can contain pragmas as well
5275 -- as actual handlers. In practice these pragmas can only occur at
5276 -- the start of the list, since any pragmas occurring later on will
5277 -- be included in the statement list of the corresponding handler.
5279 -- Note: although in the Ada syntax, the sequence of statements in
5280 -- a handled sequence of statements can only contain statements, we
5281 -- allow free mixing of declarations and statements in the resulting
5282 -- expanded tree. This is for example used to deal with the case of
5283 -- a cleanup procedure that must handle declarations as well as the
5284 -- statements of a block.
5286 -- N_Handled_Sequence_Of_Statements
5287 -- Sloc points to first token of first statement
5288 -- Statements (List3)
5289 -- End_Label (Node4) (set to Empty if expander generated)
5290 -- Exception_Handlers (List5) (set to No_List if none present)
5291 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
5292 -- First_Real_Statement (Node2-Sem)
5293 -- Zero_Cost_Handling (Flag5-Sem)
5295 -- Note: the parent always contains a Declarations field which contains
5296 -- declarations associated with the handled sequence of statements. This
5297 -- is true even in the case of an accept statement (see description of
5298 -- the N_Accept_Statement node).
5300 -- End_Label refers to the containing construct.
5302 -----------------------------
5303 -- 11.2 Exception Handler --
5304 -----------------------------
5306 -- EXCEPTION_HANDLER ::=
5307 -- when [CHOICE_PARAMETER_SPECIFICATION :]
5308 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
5309 -- SEQUENCE_OF_STATEMENTS
5311 -- Note: choice parameter specification is not allowed in Ada 83 mode
5313 -- N_Exception_Handler
5314 -- Sloc points to WHEN
5315 -- Choice_Parameter (Node2) (set to Empty if not present)
5316 -- Exception_Choices (List4)
5317 -- Statements (List3)
5318 -- Zero_Cost_Handling (Flag5-Sem)
5320 ------------------------------------------
5321 -- 11.2 Choice parameter specification --
5322 ------------------------------------------
5324 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
5326 ----------------------------
5327 -- 11.2 Exception Choice --
5328 ----------------------------
5330 -- EXCEPTION_CHOICE ::= exception_NAME | others
5332 -- Except in the case of OTHERS, no explicit node appears in the tree
5333 -- for exception choice. Instead the exception name appears directly.
5334 -- An OTHERS choice is represented by a N_Others_Choice node (see
5337 -- Note: for the exception choice created for an at end handler, the
5338 -- exception choice is an N_Others_Choice node with All_Others set.
5340 ---------------------------
5341 -- 11.3 Raise Statement --
5342 ---------------------------
5344 -- RAISE_STATEMENT ::= raise [exception_NAME];
5346 -- N_Raise_Statement
5347 -- Sloc points to RAISE
5348 -- Name (Node2) (set to Empty if no exception name present)
5350 -------------------------------
5351 -- 12.1 Generic Declaration --
5352 -------------------------------
5354 -- GENERIC_DECLARATION ::=
5355 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
5357 ------------------------------------------
5358 -- 12.1 Generic Subprogram Declaration --
5359 ------------------------------------------
5361 -- GENERIC_SUBPROGRAM_DECLARATION ::=
5362 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION;
5364 -- Note: Generic_Formal_Declarations can include pragmas
5366 -- N_Generic_Subprogram_Declaration
5367 -- Sloc points to GENERIC
5368 -- Specification (Node1) subprogram specification
5369 -- Corresponding_Body (Node5-Sem)
5370 -- Generic_Formal_Declarations (List2) from generic formal part
5371 -- Parent_Spec (Node4-Sem)
5373 ---------------------------------------
5374 -- 12.1 Generic Package Declaration --
5375 ---------------------------------------
5377 -- GENERIC_PACKAGE_DECLARATION ::=
5378 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION;
5380 -- Note: when we do generics right, the Activation_Chain_Entity entry
5381 -- for this node can be removed (since the expander won't see generic
5382 -- units any more)???.
5384 -- Note: Generic_Formal_Declarations can include pragmas
5386 -- N_Generic_Package_Declaration
5387 -- Sloc points to GENERIC
5388 -- Specification (Node1) package specification
5389 -- Corresponding_Body (Node5-Sem)
5390 -- Generic_Formal_Declarations (List2) from generic formal part
5391 -- Parent_Spec (Node4-Sem)
5392 -- Activation_Chain_Entity (Node3-Sem)
5394 -------------------------------
5395 -- 12.1 Generic Formal Part --
5396 -------------------------------
5398 -- GENERIC_FORMAL_PART ::=
5399 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
5401 ------------------------------------------------
5402 -- 12.1 Generic Formal Parameter Declaration --
5403 ------------------------------------------------
5405 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
5406 -- FORMAL_OBJECT_DECLARATION
5407 -- | FORMAL_TYPE_DECLARATION
5408 -- | FORMAL_SUBPROGRAM_DECLARATION
5409 -- | FORMAL_PACKAGE_DECLARATION
5411 ---------------------------------
5412 -- 12.3 Generic Instantiation --
5413 ---------------------------------
5415 -- GENERIC_INSTANTIATION ::=
5416 -- package DEFINING_PROGRAM_UNIT_NAME is
5417 -- new generic_package_NAME [GENERIC_ACTUAL_PART];
5418 -- | procedure DEFINING_PROGRAM_UNIT_NAME is
5419 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART];
5420 -- | function DEFINING_DESIGNATOR is
5421 -- new generic_function_NAME [GENERIC_ACTUAL_PART];
5423 -- N_Package_Instantiation
5424 -- Sloc points to PACKAGE
5425 -- Defining_Unit_Name (Node1)
5427 -- Generic_Associations (List3) (set to No_List if no
5428 -- generic actual part)
5429 -- Parent_Spec (Node4-Sem)
5430 -- Instance_Spec (Node5-Sem)
5431 -- ABE_Is_Certain (Flag18-Sem)
5433 -- N_Procedure_Instantiation
5434 -- Sloc points to PROCEDURE
5435 -- Defining_Unit_Name (Node1)
5437 -- Parent_Spec (Node4-Sem)
5438 -- Generic_Associations (List3) (set to No_List if no
5439 -- generic actual part)
5440 -- Instance_Spec (Node5-Sem)
5441 -- ABE_Is_Certain (Flag18-Sem)
5443 -- N_Function_Instantiation
5444 -- Sloc points to FUNCTION
5445 -- Defining_Unit_Name (Node1)
5447 -- Generic_Associations (List3) (set to No_List if no
5448 -- generic actual part)
5449 -- Parent_Spec (Node4-Sem)
5450 -- Instance_Spec (Node5-Sem)
5451 -- ABE_Is_Certain (Flag18-Sem)
5453 ------------------------------
5454 -- 12.3 Generic Actual Part --
5455 ------------------------------
5457 -- GENERIC_ACTUAL_PART ::=
5458 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
5460 -------------------------------
5461 -- 12.3 Generic Association --
5462 -------------------------------
5464 -- GENERIC_ASSOCIATION ::=
5465 -- [generic_formal_parameter_SELECTOR_NAME =>]
5466 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER
5468 -- Note: unlike the procedure call case, a generic association node
5469 -- is generated for every association, even if no formal is present.
5470 -- In this case the parser will leave the Selector_Name field set
5471 -- to Empty, to be filled in later by the semantic pass.
5473 -- N_Generic_Association
5474 -- Sloc points to first token of generic association
5475 -- Selector_Name (Node2) (set to Empty if no formal
5476 -- parameter selector name)
5477 -- Explicit_Generic_Actual_Parameter (Node1)
5479 ---------------------------------------------
5480 -- 12.3 Explicit Generic Actual Parameter --
5481 ---------------------------------------------
5483 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
5484 -- EXPRESSION | variable_NAME | subprogram_NAME
5485 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
5487 -------------------------------------
5488 -- 12.4 Formal Object Declaration --
5489 -------------------------------------
5491 -- FORMAL_OBJECT_DECLARATION ::=
5492 -- DEFINING_IDENTIFIER_LIST :
5493 -- MODE SUBTYPE_MARK [:= DEFAULT_EXPRESSION];
5495 -- Although the syntax allows multiple identifiers in the list, the
5496 -- semantics is as though successive declarations were given with
5497 -- identical type definition and expression components. To simplify
5498 -- semantic processing, the parser represents a multiple declaration
5499 -- case as a sequence of single declarations, using the More_Ids and
5500 -- Prev_Ids flags to preserve the original source form as described
5501 -- in the section on "Handling of Defining Identifier Lists".
5503 -- N_Formal_Object_Declaration
5504 -- Sloc points to first identifier
5505 -- Defining_Identifier (Node1)
5506 -- In_Present (Flag15)
5507 -- Out_Present (Flag17)
5508 -- Subtype_Mark (Node4)
5509 -- Expression (Node3) (set to Empty if no default expression)
5510 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5511 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5513 -----------------------------------
5514 -- 12.5 Formal Type Declaration --
5515 -----------------------------------
5517 -- FORMAL_TYPE_DECLARATION ::=
5518 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
5519 -- is FORMAL_TYPE_DEFINITION;
5521 -- N_Formal_Type_Declaration
5522 -- Sloc points to TYPE
5523 -- Defining_Identifier (Node1)
5524 -- Formal_Type_Definition (Node3)
5525 -- Discriminant_Specifications (List4) (set to No_List if no
5526 -- discriminant part)
5527 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5529 ----------------------------------
5530 -- 12.5 Formal type definition --
5531 ----------------------------------
5533 -- FORMAL_TYPE_DEFINITION ::=
5534 -- FORMAL_PRIVATE_TYPE_DEFINITION
5535 -- | FORMAL_DERIVED_TYPE_DEFINITION
5536 -- | FORMAL_DISCRETE_TYPE_DEFINITION
5537 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
5538 -- | FORMAL_MODULAR_TYPE_DEFINITION
5539 -- | FORMAL_FLOATING_POINT_DEFINITION
5540 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
5541 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
5542 -- | FORMAL_ARRAY_TYPE_DEFINITION
5543 -- | FORMAL_ACCESS_TYPE_DEFINITION
5545 ---------------------------------------------
5546 -- 12.5.1 Formal Private Type Definition --
5547 ---------------------------------------------
5549 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
5550 -- [[abstract] tagged] [limited] private
5552 -- Note: TAGGED is not allowed in Ada 83 mode
5554 -- N_Formal_Private_Type_Definition
5555 -- Sloc points to PRIVATE
5556 -- Abstract_Present (Flag4)
5557 -- Tagged_Present (Flag15)
5558 -- Limited_Present (Flag17)
5560 --------------------------------------------
5561 -- 12.5.1 Formal Derived Type Definition --
5562 --------------------------------------------
5564 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
5565 -- [abstract] new SUBTYPE_MARK [with private]
5567 -- Note: this construct is not allowed in Ada 83 mode
5569 -- N_Formal_Derived_Type_Definition
5570 -- Sloc points to NEW
5571 -- Subtype_Mark (Node4)
5572 -- Private_Present (Flag15)
5573 -- Abstract_Present (Flag4)
5575 ---------------------------------------------
5576 -- 12.5.2 Formal Discrete Type Definition --
5577 ---------------------------------------------
5579 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
5581 -- N_Formal_Discrete_Type_Definition
5584 ---------------------------------------------------
5585 -- 12.5.2 Formal Signed Integer Type Definition --
5586 ---------------------------------------------------
5588 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
5590 -- N_Formal_Signed_Integer_Type_Definition
5591 -- Sloc points to RANGE
5593 --------------------------------------------
5594 -- 12.5.2 Formal Modular Type Definition --
5595 --------------------------------------------
5597 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
5599 -- N_Formal_Modular_Type_Definition
5600 -- Sloc points to MOD
5602 ----------------------------------------------
5603 -- 12.5.2 Formal Floating Point Definition --
5604 ----------------------------------------------
5606 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
5608 -- N_Formal_Floating_Point_Definition
5609 -- Sloc points to DIGITS
5611 ----------------------------------------------------
5612 -- 12.5.2 Formal Ordinary Fixed Point Definition --
5613 ----------------------------------------------------
5615 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
5617 -- N_Formal_Ordinary_Fixed_Point_Definition
5618 -- Sloc points to DELTA
5620 ---------------------------------------------------
5621 -- 12.5.2 Formal Decimal Fixed Point Definition --
5622 ---------------------------------------------------
5624 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
5626 -- Note: formal decimal fixed point definition not allowed in Ada 83
5628 -- N_Formal_Decimal_Fixed_Point_Definition
5629 -- Sloc points to DELTA
5631 ------------------------------------------
5632 -- 12.5.3 Formal Array Type Definition --
5633 ------------------------------------------
5635 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
5637 -------------------------------------------
5638 -- 12.5.4 Formal Access Type Definition --
5639 -------------------------------------------
5641 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
5643 -----------------------------------------
5644 -- 12.6 Formal Subprogram Declaration --
5645 -----------------------------------------
5647 -- FORMAL_SUBPROGRAM_DECLARATION ::=
5648 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT];
5650 -- N_Formal_Subprogram_Declaration
5651 -- Sloc points to WITH
5652 -- Specification (Node1)
5653 -- Default_Name (Node2) (set to Empty if no subprogram default)
5654 -- Box_Present (Flag15)
5656 -- Note: if no subprogram default is present, then Name is set
5657 -- to Empty, and Box_Present is False.
5659 ------------------------------
5660 -- 12.6 Subprogram Default --
5661 ------------------------------
5663 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
5665 -- There is no separate node in the tree for a subprogram default.
5666 -- Instead the parent (N_Formal_Subprogram_Declaration) node contains
5667 -- the default name or box indication, as needed.
5669 ------------------------
5670 -- 12.6 Default Name --
5671 ------------------------
5673 -- DEFAULT_NAME ::= NAME
5675 --------------------------------------
5676 -- 12.7 Formal Package Declaration --
5677 --------------------------------------
5679 -- FORMAL_PACKAGE_DECLARATION ::=
5680 -- with package DEFINING_IDENTIFIER
5681 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART;
5683 -- Note: formal package declarations not allowed in Ada 83 mode
5685 -- N_Formal_Package_Declaration
5686 -- Sloc points to WITH
5687 -- Defining_Identifier (Node1)
5689 -- Generic_Associations (List3) (set to No_List if (<>) case or
5690 -- empty generic actual part)
5691 -- Box_Present (Flag15)
5692 -- Instance_Spec (Node5-Sem)
5693 -- ABE_Is_Certain (Flag18-Sem)
5695 --------------------------------------
5696 -- 12.7 Formal Package Actual Part --
5697 --------------------------------------
5699 -- FORMAL_PACKAGE_ACTUAL_PART ::=
5700 -- (<>) | [GENERIC_ACTUAL_PART]
5702 -- There is no explicit node in the tree for a formal package
5703 -- actual part. Instead the information appears in the parent node
5704 -- (i.e. the formal package declaration node itself).
5706 ---------------------------------
5707 -- 13.1 Representation clause --
5708 ---------------------------------
5710 -- REPRESENTATION_CLAUSE ::=
5711 -- ATTRIBUTE_DEFINITION_CLAUSE
5712 -- | ENUMERATION_REPRESENTATION_CLAUSE
5713 -- | RECORD_REPRESENTATION_CLAUSE
5716 ----------------------
5717 -- 13.1 Local Name --
5718 ----------------------
5722 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
5723 -- | library_unit_NAME
5725 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
5726 -- as an attribute reference, which has essentially the same form.
5728 ---------------------------------------
5729 -- 13.3 Attribute definition clause --
5730 ---------------------------------------
5732 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
5733 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
5734 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
5736 -- In Ada 83, the expression must be a simple expression and the
5737 -- local name must be a direct name.
5739 -- Note: the only attribute definition clause that is processed by
5740 -- gigi is an address clause. For all other cases, the information
5741 -- is extracted by the front end and either results in setting entity
5742 -- information, e.g. Esize for the Size clause, or in appropriate
5743 -- expansion actions (e.g. in the case of Storage_Size).
5745 -- For an address clause, Gigi constructs the appropriate addressing
5746 -- code. It also ensures that no aliasing optimizations are made
5747 -- for the object for which the address clause appears.
5749 -- Note: for an address clause used to achieve an overlay:
5753 -- for B'Address use A'Address;
5755 -- the above rule means that Gigi will ensure that no optimizations
5756 -- will be made for B that would violate the implementation advice
5757 -- of RM 13.3(19). However, this advice applies only to B and not
5758 -- to A, which seems unfortunate. The GNAT front end will mark the
5759 -- object A as volatile to also prevent unwanted optimization
5760 -- assumptions based on no aliasing being made for B.
5762 -- N_Attribute_Definition_Clause
5763 -- Sloc points to FOR
5764 -- Name (Node2) the local name
5765 -- Chars (Name1) the identifier name from the attribute designator
5766 -- Expression (Node3) the expression or name
5767 -- Next_Rep_Item (Node4-Sem)
5768 -- From_At_Mod (Flag4-Sem)
5769 -- Check_Address_Alignment (Flag11-Sem)
5771 ---------------------------------------------
5772 -- 13.4 Enumeration representation clause --
5773 ---------------------------------------------
5775 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
5776 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
5778 -- In Ada 83, the name must be a direct name
5780 -- N_Enumeration_Representation_Clause
5781 -- Sloc points to FOR
5782 -- Identifier (Node1) direct name
5783 -- Array_Aggregate (Node3)
5784 -- Next_Rep_Item (Node4-Sem)
5786 ---------------------------------
5787 -- 13.4 Enumeration aggregate --
5788 ---------------------------------
5790 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
5792 ------------------------------------------
5793 -- 13.5.1 Record representation clause --
5794 ------------------------------------------
5796 -- RECORD_REPRESENTATION_CLAUSE ::=
5797 -- for first_subtype_LOCAL_NAME use
5798 -- record [MOD_CLAUSE]
5799 -- {COMPONENT_CLAUSE}
5802 -- Gigi restriction: Mod_Clause is always Empty (if present it is
5803 -- replaced by a corresponding Alignment attribute definition clause).
5805 -- Note: Component_Clauses can include pragmas
5807 -- N_Record_Representation_Clause
5808 -- Sloc points to FOR
5809 -- Identifier (Node1) direct name
5810 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
5811 -- Component_Clauses (List3)
5812 -- Next_Rep_Item (Node4-Sem)
5814 ------------------------------
5815 -- 13.5.1 Component clause --
5816 ------------------------------
5818 -- COMPONENT_CLAUSE ::=
5819 -- component_LOCAL_NAME at POSITION
5820 -- range FIRST_BIT .. LAST_BIT;
5822 -- N_Component_Clause
5823 -- Sloc points to AT
5824 -- Component_Name (Node1) points to Name or Attribute_Reference
5826 -- First_Bit (Node3)
5829 ----------------------
5830 -- 13.5.1 Position --
5831 ----------------------
5833 -- POSITION ::= static_EXPRESSION
5835 -----------------------
5836 -- 13.5.1 First_Bit --
5837 -----------------------
5839 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
5841 ----------------------
5842 -- 13.5.1 Last_Bit --
5843 ----------------------
5845 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
5847 --------------------------
5848 -- 13.8 Code statement --
5849 --------------------------
5851 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
5853 -- Note: in GNAT, the qualified expression has the form
5855 -- Asm_Insn'(Asm (...));
5859 -- Asm_Insn'(Asm_Volatile (...))
5861 -- See package System.Machine_Code in file s-maccod.ads for details
5862 -- on the allowed parameters to Asm[_Volatile]. There are two ways
5863 -- this node can arise, as a code statement, in which case the
5864 -- expression is the qualified expression, or as a result of the
5865 -- expansion of an intrinsic call to the Asm or Asm_Input procedure.
5868 -- Sloc points to first token of the expression
5869 -- Expression (Node3)
5871 -- Note: package Exp_Code contains an abstract functional interface
5872 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
5874 ------------------------
5875 -- 13.12 Restriction --
5876 ------------------------
5879 -- restriction_IDENTIFIER
5880 -- | restriction_parameter_IDENTIFIER => EXPRESSION
5882 -- There is no explicit node for restrictions. Instead the restriction
5883 -- appears in normal pragma syntax as a pragma argument association,
5884 -- which has the same syntactic form.
5886 --------------------------
5887 -- B.2 Shift Operators --
5888 --------------------------
5890 -- Calls to the intrinsic shift functions are converted to one of
5891 -- the following shift nodes, which have the form of normal binary
5892 -- operator names. Note that for a given shift operation, one node
5893 -- covers all possible types, as for normal operators.
5895 -- Note: it is perfectly permissible for the expander to generate
5896 -- shift operation nodes directly, in which case they will be analyzed
5897 -- and parsed in the usual manner.
5899 -- Sprint syntax: shift-function-name!(expr, count)
5901 -- Note: the Left_Opnd field holds the first argument (the value to
5902 -- be shifted). The Right_Opnd field holds the second argument (the
5903 -- shift count). The Chars field is the name of the intrinsic function.
5906 -- Sloc points to the function name
5907 -- plus fields for binary operator
5908 -- plus fields for expression
5909 -- Shift_Count_OK (Flag4-Sem)
5911 -- N_Op_Rotate_Right
5912 -- Sloc points to the function name
5913 -- plus fields for binary operator
5914 -- plus fields for expression
5915 -- Shift_Count_OK (Flag4-Sem)
5918 -- Sloc points to the function name
5919 -- plus fields for binary operator
5920 -- plus fields for expression
5921 -- Shift_Count_OK (Flag4-Sem)
5923 -- N_Op_Shift_Right_Arithmetic
5924 -- Sloc points to the function name
5925 -- plus fields for binary operator
5926 -- plus fields for expression
5927 -- Shift_Count_OK (Flag4-Sem)
5930 -- Sloc points to the function name
5931 -- plus fields for binary operator
5932 -- plus fields for expression
5933 -- Shift_Count_OK (Flag4-Sem)
5935 --------------------------
5936 -- Obsolescent Features --
5937 --------------------------
5939 -- The syntax descriptions and tree nodes for obsolescent features are
5940 -- grouped together, corresponding to their location in appendix I in
5941 -- the RM. However, parsing and semantic analysis for these constructs
5942 -- is located in an appropriate chapter (see individual notes).
5944 ---------------------------
5945 -- J.3 Delta Constraint --
5946 ---------------------------
5948 -- Note: the parse routine for this construct is located in section
5949 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
5950 -- where delta constraint logically belongs.
5952 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
5954 -- N_Delta_Constraint
5955 -- Sloc points to DELTA
5956 -- Delta_Expression (Node3)
5957 -- Range_Constraint (Node4) (set to Empty if not present)
5959 --------------------
5961 --------------------
5963 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
5965 -- Note: the parse routine for this construct is located in Par-Ch13,
5966 -- and the semantic analysis is in Sem_Ch13, where at clause logically
5967 -- belongs if it were not obsolescent.
5969 -- Note: in Ada 83 the expression must be a simple expression
5971 -- Gigi restriction: This node never appears, it is rewritten as an
5972 -- address attribute definition clause.
5975 -- Sloc points to FOR
5976 -- Identifier (Node1)
5977 -- Expression (Node3)
5979 ---------------------
5980 -- J.8 Mod clause --
5981 ---------------------
5983 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
5985 -- Note: the parse routine for this construct is located in Par-Ch13,
5986 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
5987 -- belongs if it were not obsolescent.
5989 -- Note: in Ada 83, the expression must be a simple expression
5991 -- Gigi restriction: this node never appears. It is replaced
5992 -- by a corresponding Alignment attribute definition clause.
5994 -- Note: pragmas can appear before and after the MOD_CLAUSE since
5995 -- its name has "clause" in it. This is rather strange, but is quite
5996 -- definitely specified. The pragmas before are collected in the
5997 -- Pragmas_Before field of the mod clause node itself, and pragmas
5998 -- after are simply swallowed up in the list of component clauses.
6001 -- Sloc points to AT
6002 -- Expression (Node3)
6003 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
6005 --------------------
6006 -- Semantic Nodes --
6007 --------------------
6009 -- These semantic nodes are used to hold additional semantic information.
6010 -- They are inserted into the tree as a result of semantic processing.
6011 -- Although there are no legitimate source syntax constructions that
6012 -- correspond directly to these nodes, we need a source syntax for the
6013 -- reconstructed tree printed by Sprint, and the node descriptions here
6014 -- show this syntax.
6016 ----------------------------
6017 -- Conditional Expression --
6018 ----------------------------
6020 -- This node is used to represent an expression corresponding to the
6021 -- C construct (condition ? then-expression : else_expression), where
6022 -- Expressions is a three element list, whose first expression is the
6023 -- condition, and whose second and third expressions are the then and
6024 -- else expressions respectively.
6026 -- Note: the Then_Actions and Else_Actions fields are always set to
6027 -- No_List in the tree passed to Gigi. These fields are used only
6028 -- for temporary processing purposes in the expander.
6030 -- Sprint syntax: (if expr then expr else expr)
6032 -- N_Conditional_Expression
6033 -- Sloc points to related node
6034 -- Expressions (List1)
6035 -- Then_Actions (List2-Sem)
6036 -- Else_Actions (List3-Sem)
6037 -- plus fields for expression
6039 -- Note: in the case where a debug source file is generated, the Sloc
6040 -- for this node points to the IF keyword in the Sprint file output.
6046 -- The N_Expanded_Name node is used to represent a selected component
6047 -- name that has been resolved to an expanded name. The semantic phase
6048 -- replaces N_Selected_Component nodes that represent names by the use
6049 -- of this node, leaving the N_Selected_Component node used only when
6050 -- the prefix is a record or protected type.
6052 -- The fields of the N_Expanded_Name node are layed out identically
6053 -- to those of the N_Selected_Component node, allowing conversion of
6054 -- an expanded name node to a selected component node to be done
6055 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
6057 -- There is no special sprint syntax for an expanded name.
6060 -- Sloc points to the period
6061 -- Chars (Name1) copy of Chars field of selector name
6063 -- Selector_Name (Node2)
6064 -- Entity (Node4-Sem)
6065 -- Associated_Node (Node4-Sem)
6066 -- Redundant_Use (Flag13-Sem)
6067 -- Has_Private_View (Flag11-Sem) set in generic units.
6068 -- plus fields for expression
6070 --------------------
6071 -- Free Statement --
6072 --------------------
6074 -- The N_Free_Statement node is generated as a result of a call to an
6075 -- instantiation of Unchecked_Deallocation. The instantiation of this
6076 -- generic is handled specially and generates this node directly.
6078 -- Sprint syntax: free expression
6081 -- Sloc is copied from the unchecked deallocation call
6082 -- Expression (Node3) argument to unchecked deallocation call
6083 -- Storage_Pool (Node1-Sem)
6084 -- Procedure_To_Call (Node4-Sem)
6086 -- Note: in the case where a debug source file is generated, the Sloc
6087 -- for this node points to the FREE keyword in the Sprint file output.
6093 -- This node marks the point in a declarative part at which an entity
6094 -- declared therein becomes frozen. The expander places initialization
6095 -- procedures for types at those points. Gigi uses the freezing point
6096 -- to elaborate entities that may depend on previous private types.
6098 -- See the section in Einfo "Delayed Freezing and Elaboration" for
6099 -- a full description of the use of this node.
6101 -- The Entity field points back to the entity for the type (whose
6102 -- Freeze_Node field points back to this freeze node).
6104 -- The Actions field contains a list of declarations and statements
6105 -- generated by the expander which are associated with the freeze
6106 -- node, and are elaborated as though the freeze node were replaced
6107 -- by this sequence of actions.
6109 -- Note: the Sloc field in the freeze node references a construct
6110 -- associated with the freezing point. This is used for posting
6111 -- messages in some error/warning situations, e.g. the case where
6112 -- a primitive operation of a tagged type is declared too late.
6114 -- Sprint syntax: freeze entity-name [
6119 -- Sloc points near freeze point (see above special note)
6120 -- Entity (Node4-Sem)
6121 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
6122 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
6123 -- Actions (List1) (set to No_List if no freeze actions)
6124 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
6126 -- The Actions field holds actions associated with the freeze. These
6127 -- actions are elaborated at the point where the type is frozen.
6129 -- Note: in the case where a debug source file is generated, the Sloc
6130 -- for this node points to the FREEZE keyword in the Sprint file output.
6132 --------------------------------
6133 -- Implicit Label Declaration --
6134 --------------------------------
6136 -- An implicit label declaration is created for every occurrence of a
6137 -- label on a statement or a label on a block or loop. It is chained
6138 -- in the declarations of the innermost enclosing block as specified
6139 -- in RM section 5.1 (3).
6141 -- The Defining_Identifier is the actual identifier for the
6142 -- statement identifier. Note that the occurrence of the label
6143 -- is a reference, NOT the defining occurrence. The defining
6144 -- occurrence occurs at the head of the innermost enclosing
6145 -- block, and is represented by this node.
6147 -- Note: from the grammar, this might better be called an implicit
6148 -- statement identifier declaration, but the term we choose seems
6149 -- friendlier, since at least informally statement identifiers are
6150 -- called labels in both cases (i.e. when used in labels, and when
6151 -- used as the identifiers of blocks and loops).
6153 -- Note: although this is logically a semantic node, since it does
6154 -- not correspond directly to a source syntax construction, these
6155 -- nodes are actually created by the parser in a post pass done just
6156 -- after parsing is complete, before semantic analysis is started (see
6157 -- the Par.Labl subunit in file par-labl.adb).
6159 -- Sprint syntax: labelname : label;
6161 -- N_Implicit_Label_Declaration
6162 -- Sloc points to the << of the label
6163 -- Defining_Identifier (Node1)
6164 -- Label_Construct (Node2-Sem)
6166 -- Note: in the case where a debug source file is generated, the Sloc
6167 -- for this node points to the label name in the generated declaration.
6169 ---------------------
6170 -- Itype_Reference --
6171 ---------------------
6173 -- This node is used to create a reference to an Itype. The only
6174 -- purpose is to make sure that the Itype is defined if this is the
6177 -- A typical use of this node is when an Itype is to be referenced in
6178 -- two branches of an if statement. In this case it is important that
6179 -- the first use of the Itype not be inside the conditional, since
6180 -- then it might not be defined if the wrong branch of the if is
6181 -- taken in the case where the definition generates elaboration code.
6183 -- The Itype field points to the referenced Itype
6185 -- sprint syntax: reference itype-name
6187 -- N_Itype_Reference
6188 -- Sloc points to the node generating the reference
6189 -- Itype (Node1-Sem)
6191 -- Note: in the case where a debug source file is generated, the Sloc
6192 -- for this node points to the REFERENCE keyword in the file output.
6194 ---------------------
6195 -- Raise_xxx_Error --
6196 ---------------------
6198 -- One of these nodes is created during semantic analysis to replace
6199 -- a node for an expression that is determined to definitely raise
6200 -- the corresponding exception.
6202 -- The N_Raise_xxx_Error node may also stand alone in place
6203 -- of a declaration or statement, in which case it simply causes
6204 -- the exception to be raised (i.e. it is equivalent to a raise
6205 -- statement that raises the corresponding exception). This use
6206 -- is distinguished by the fact that the Etype in this case is
6207 -- Standard_Void_Type, In the subexprssion case, the Etype is the
6208 -- same as the type of the subexpression which it replaces.
6210 -- If Condition is empty, then the raise is unconditional. If the
6211 -- Condition field is non-empty, it is a boolean expression which
6212 -- is first evaluated, and the exception is raised only if the
6213 -- value of the expression is True. In the unconditional case, the
6214 -- creation of this node is usually accompanied by a warning message
6215 -- error. The creation of this node will usually be accompanied by a
6216 -- message (unless it appears within the right operand of a short
6217 -- circuit form whose left argument is static and decisively
6218 -- eliminates elaboration of the raise operation.
6220 -- The exception is generated with a message that contains the
6221 -- file name and line number, and then appended text. The Reason
6222 -- code shows the text to be added. The Reason code is an element
6223 -- of the type Types.RT_Exception_Code, and indicates both the
6224 -- message to be added, and the exception to be raised (which must
6225 -- match the node type). The value is stored by storing a Uint which
6226 -- is the Pos value of the enumeration element in this type.
6228 -- Gigi restriction: This expander ensures that the type of the
6229 -- Condition field is always Standard.Boolean, even if the type
6230 -- in the source is some non-standard boolean type.
6232 -- Sprint syntax: [xxx_error "msg"]
6233 -- or: [xxx_error when condition "msg"]
6235 -- N_Raise_Constraint_Error
6236 -- Sloc references related construct
6237 -- Condition (Node1) (set to Empty if no condition)
6239 -- plus fields for expression
6241 -- N_Raise_Program_Error
6242 -- Sloc references related construct
6243 -- Condition (Node1) (set to Empty if no condition)
6245 -- plus fields for expression
6247 -- N_Raise_Storage_Error
6248 -- Sloc references related construct
6249 -- Condition (Node1) (set to Empty if no condition)
6251 -- plus fields for expression
6253 -- Note: Sloc is copied from the expression generating the exception.
6254 -- In the case where a debug source file is generated, the Sloc for
6255 -- this node points to the left bracket in the Sprint file output.
6261 -- For a number of purposes, we need to construct references to objects.
6262 -- These references are subsequently treated as normal access values.
6263 -- An example is the construction of the parameter block passed to a
6264 -- task entry. The N_Reference node is provided for this purpose. It is
6265 -- similar in effect to the use of the Unrestricted_Access attribute,
6266 -- and like Unrestricted_Access can be applied to objects which would
6267 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
6268 -- objects which are not aliased, and slices). In addition it can be
6269 -- applied to composite type values as well as objects, including string
6270 -- values and aggregates.
6272 -- Note: we use the Prefix field for this expression so that the
6273 -- resulting node can be treated using common code with the attribute
6274 -- nodes for the 'Access and related attributes. Logically it would make
6275 -- more sense to call it an Expression field, but then we would have to
6276 -- special case the treatment of the N_Reference node.
6278 -- Sprint syntax: prefix'reference
6281 -- Sloc is copied from the expression
6283 -- plus fields for expression
6285 -- Note: in the case where a debug source file is generated, the Sloc
6286 -- for this node points to the quote in the Sprint file output.
6288 ---------------------
6289 -- Subprogram_Info --
6290 ---------------------
6292 -- This node generates the appropriate Subprogram_Info value for a
6293 -- given procedure. See Ada.Exceptions for further details
6295 -- Sprint syntax: subprog'subprogram_info
6297 -- N_Subprogram_Info
6298 -- Sloc points to the entity for the procedure
6299 -- Identifier (Node1) identifier referencing the procedure
6300 -- Etype (Node5-Sem) type (always set to Ada.Exceptions.Code_Loc
6302 -- Note: in the case where a debug source file is generated, the Sloc
6303 -- for this node points to the quote in the Sprint file output.
6305 --------------------------
6306 -- Unchecked Expression --
6307 --------------------------
6309 -- An unchecked expression is one that must be analyzed and resolved
6310 -- with all checks off, regardless of the current setting of scope
6313 -- Sprint syntax: `(expression).
6315 -- Note: this node is always removed from the tree (and replaced by
6316 -- its constituent expression) on completion of analysis, so it only
6317 -- appears in intermediate trees, and will never be seen by Gigi.
6319 -- N_Unchecked_Expression
6320 -- Sloc is a copy of the Sloc of the expression
6321 -- Expression (Node3)
6322 -- plus fields for expression
6324 -- Note: in the case where a debug source file is generated, the Sloc
6325 -- for this node points to the back quote in the Sprint file output.
6327 -------------------------------
6328 -- Unchecked Type Conversion --
6329 -------------------------------
6331 -- An unchecked type conversion node represents the semantic action
6332 -- corresponding to a call to an instantiation of Unchecked_Conversion.
6333 -- It is generated as a result of actual use of Unchecked_Conversion
6334 -- and also the expander generates unchecked type conversion nodes
6335 -- directly for expansion of complex semantic actions.
6337 -- Note: an unchecked type conversion is a variable as far as the
6338 -- semantics are concerned, which is convenient for the expander.
6339 -- This does not change what Ada source programs are legal, since
6340 -- clearly a function call to an instantiation of Unchecked_Conversion
6341 -- is not a variable in any case.
6343 -- Sprint syntax: subtype-mark!(expression).
6345 -- N_Unchecked_Type_Conversion
6346 -- Sloc points to related node in source
6347 -- Subtype_Mark (Node4)
6348 -- Expression (Node3)
6349 -- Kill_Range_Check (Flag11-Sem)
6350 -- No_Truncation (Flag17-Sem)
6351 -- plus fields for expression
6353 -- Note: in the case where a debug source file is generated, the Sloc
6354 -- for this node points to the exclamation in the Sprint file output.
6356 -----------------------------------
6357 -- Validate_Unchecked_Conversion --
6358 -----------------------------------
6360 -- The front end does most of the validation of unchecked conversion,
6361 -- including checking sizes (this is done after the back end is called
6362 -- to take advantage of back-annotation of calculated sizes).
6364 -- The front end also deals with specific cases that are not allowed
6365 -- e.g. involving unconstrained array types.
6367 -- For the case of the standard gigi backend, this means that all
6368 -- checks are done in the front-end.
6370 -- However, in the case of specialized back-ends, notably the JVM
6371 -- backend for JGNAT, additional requirements and restrictions apply
6372 -- to unchecked conversion, and these are most conveniently performed
6373 -- in the specialized back-end.
6375 -- To accommodate this requirement, for such back ends, the following
6376 -- special node is generated recording an unchecked conversion that
6377 -- needs to be validated. The back end should post an appropriate
6378 -- error message if the unchecked conversion is invalid or warrants
6379 -- a special warning message.
6381 -- Source_Type and Target_Type point to the entities for the two
6382 -- types involved in the unchecked conversion instantiation that
6383 -- is to be validated.
6385 -- Sprint syntax: validate Unchecked_Conversion (source, target);
6387 -- N_Validate_Unchecked_Conversion
6388 -- Sloc points to instantiation (location for warning message)
6389 -- Source_Type (Node1-Sem)
6390 -- Target_Type (Node2-Sem)
6392 -- Note: in the case where a debug source file is generated, the Sloc
6393 -- for this node points to the VALIDATE keyword in the file output.
6399 -- Used as the contents of the Nkind field of the dummy Empty node
6400 -- and in some other situations to indicate an uninitialized value.
6403 -- Chars (Name1) is set to No_Name
6409 -- Used as the contents of the Nkind field of the dummy Error node.
6410 -- Has an Etype field, which gets set to Any_Type later on, to help
6411 -- error recovery (Error_Posted is also set in the Error node).
6414 -- Chars (Name1) is set to Error_Name
6415 -- Etype (Node5-Sem)
6417 --------------------------
6418 -- Node Type Definition --
6419 --------------------------
6421 -- The following is the definition of the Node_Kind type. As previously
6422 -- discussed, this is separated off to allow rearrangement of the order
6423 -- to facilitiate definition of subtype ranges. The comments show the
6424 -- subtype classes which apply to each set of node kinds. The first
6425 -- entry in the comment characterizes the following list of nodes.
6430 -- N_Representation_Clause
6433 N_Enumeration_Representation_Clause,
6435 N_Record_Representation_Clause,
6437 -- N_Representation_Clause, N_Has_Chars
6438 N_Attribute_Definition_Clause,
6443 N_Pragma_Argument_Association,
6448 -- N_Entity, N_Has_Etype, N_Has_Chars
6449 N_Defining_Character_Literal,
6450 N_Defining_Identifier,
6451 N_Defining_Operator_Symbol,
6453 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
6456 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6457 -- N_Has_Chars, N_Has_Entity
6461 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6462 -- N_Has_Chars, N_Has_Entity
6463 N_Character_Literal,
6465 -- N_Binary_Op, N_Op, N_Subexpr,
6466 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6472 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
6473 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6480 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6481 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6484 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6485 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean,
6494 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6495 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6499 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
6500 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
6505 N_Op_Shift_Right_Arithmetic,
6507 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
6508 -- N_Has_Chars, N_Has_Entity
6514 -- N_Subexpr, N_Has_Etype, N_Has_Entity
6515 N_Attribute_Reference,
6517 -- N_Subexpr, N_Has_Etype
6519 N_Conditional_Expression,
6520 N_Explicit_Dereference,
6523 N_Indexed_Component,
6528 N_Procedure_Call_Statement,
6529 N_Qualified_Expression,
6531 -- N_Raise_xxx_Error, N_Subexpr, N_Has_Etype
6533 N_Raise_Constraint_Error,
6534 N_Raise_Program_Error,
6535 N_Raise_Storage_Error,
6537 -- N_Subexpr, N_Has_Etype
6541 N_Extension_Aggregate,
6545 N_Selected_Component,
6550 N_Unchecked_Expression,
6551 N_Unchecked_Type_Conversion,
6554 N_Subtype_Indication,
6557 N_Component_Declaration,
6558 N_Entry_Declaration,
6559 N_Formal_Object_Declaration,
6560 N_Formal_Type_Declaration,
6561 N_Full_Type_Declaration,
6562 N_Incomplete_Type_Declaration,
6563 N_Loop_Parameter_Specification,
6564 N_Object_Declaration,
6565 N_Protected_Type_Declaration,
6566 N_Private_Extension_Declaration,
6567 N_Private_Type_Declaration,
6568 N_Subtype_Declaration,
6570 -- N_Subprogram_Specification, N_Declaration
6571 N_Function_Specification,
6572 N_Procedure_Specification,
6574 -- (nothing special)
6575 N_Entry_Index_Specification,
6578 -- N_Access_To_Subprogram_Definition
6579 N_Access_Function_Definition,
6580 N_Access_Procedure_Definition,
6582 -- N_Later_Decl_Item,
6583 N_Task_Type_Declaration,
6585 -- N_Body_Stub, N_Later_Decl_Item
6586 N_Package_Body_Stub,
6587 N_Protected_Body_Stub,
6588 N_Subprogram_Body_Stub,
6591 -- N_Generic_Instantiation, N_Later_Decl_Item
6592 N_Function_Instantiation,
6593 N_Package_Instantiation,
6594 N_Procedure_Instantiation,
6596 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
6600 -- N_Later_Decl_Item, N_Proper_Body
6604 -- N_Later_Decl_Item
6605 N_Implicit_Label_Declaration,
6606 N_Package_Declaration,
6607 N_Single_Task_Declaration,
6608 N_Subprogram_Declaration,
6609 N_Use_Package_Clause,
6611 -- N_Generic_Declaration, N_Later_Decl_Item
6612 N_Generic_Package_Declaration,
6613 N_Generic_Subprogram_Declaration,
6615 -- N_Array_Type_Definition
6616 N_Constrained_Array_Definition,
6617 N_Unconstrained_Array_Definition,
6619 -- N_Renaming_Declaration
6620 N_Exception_Renaming_Declaration,
6621 N_Object_Renaming_Declaration,
6622 N_Package_Renaming_Declaration,
6623 N_Subprogram_Renaming_Declaration,
6625 -- N_Generic_Renaming_Declarations, N_Renaming_Declaration
6626 N_Generic_Function_Renaming_Declaration,
6627 N_Generic_Package_Renaming_Declaration,
6628 N_Generic_Procedure_Renaming_Declaration,
6630 -- N_Statement_Other_Than_Procedure_Call
6633 N_Assignment_Statement,
6634 N_Asynchronous_Select,
6638 N_Conditional_Entry_Call,
6639 N_Delay_Relative_Statement,
6640 N_Delay_Until_Statement,
6641 N_Entry_Call_Statement,
6647 N_Requeue_Statement,
6652 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
6657 N_Accept_Alternative,
6658 N_Delay_Alternative,
6660 N_Entry_Body_Formal_Part,
6662 N_Terminate_Alternative,
6664 -- Other nodes (not part of any subtype class)
6666 N_Abstract_Subprogram_Declaration,
6667 N_Access_Definition,
6668 N_Access_To_Object_Definition,
6669 N_Case_Statement_Alternative,
6671 N_Compilation_Unit_Aux,
6672 N_Component_Association,
6673 N_Component_Definition,
6675 N_Derived_Type_Definition,
6676 N_Decimal_Fixed_Point_Definition,
6677 N_Defining_Program_Unit_Name,
6680 N_Digits_Constraint,
6681 N_Discriminant_Association,
6682 N_Discriminant_Specification,
6683 N_Enumeration_Type_Definition,
6685 N_Entry_Call_Alternative,
6686 N_Exception_Declaration,
6687 N_Exception_Handler,
6688 N_Floating_Point_Definition,
6689 N_Formal_Decimal_Fixed_Point_Definition,
6690 N_Formal_Derived_Type_Definition,
6691 N_Formal_Discrete_Type_Definition,
6692 N_Formal_Floating_Point_Definition,
6693 N_Formal_Modular_Type_Definition,
6694 N_Formal_Ordinary_Fixed_Point_Definition,
6695 N_Formal_Package_Declaration,
6696 N_Formal_Private_Type_Definition,
6697 N_Formal_Signed_Integer_Type_Definition,
6698 N_Formal_Subprogram_Declaration,
6699 N_Generic_Association,
6700 N_Handled_Sequence_Of_Statements,
6701 N_Index_Or_Discriminant_Constraint,
6704 N_Modular_Type_Definition,
6705 N_Number_Declaration,
6706 N_Ordinary_Fixed_Point_Definition,
6708 N_Package_Specification,
6709 N_Parameter_Association,
6710 N_Parameter_Specification,
6711 N_Protected_Definition,
6713 N_Real_Range_Specification,
6714 N_Record_Definition,
6715 N_Signed_Integer_Type_Definition,
6716 N_Single_Protected_Declaration,
6719 N_Triggering_Alternative,
6721 N_Validate_Unchecked_Conversion,
6728 for Node_Kind'Size use 8;
6729 -- The data structures in Atree assume this!
6731 ----------------------------
6732 -- Node Class Definitions --
6733 ----------------------------
6735 subtype N_Access_To_Subprogram_Definition is Node_Kind range
6736 N_Access_Function_Definition ..
6737 N_Access_Procedure_Definition;
6739 subtype N_Array_Type_Definition is Node_Kind range
6740 N_Constrained_Array_Definition ..
6741 N_Unconstrained_Array_Definition;
6743 subtype N_Binary_Op is Node_Kind range
6745 N_Op_Shift_Right_Arithmetic;
6747 subtype N_Body_Stub is Node_Kind range
6748 N_Package_Body_Stub ..
6751 subtype N_Declaration is Node_Kind range
6752 N_Component_Declaration ..
6753 N_Procedure_Specification;
6754 -- Note: this includes all constructs normally thought of as declarations
6755 -- except those which are separately grouped as later declarations.
6757 subtype N_Direct_Name is Node_Kind range
6759 N_Character_Literal;
6761 subtype N_Entity is Node_Kind range
6762 N_Defining_Character_Literal ..
6763 N_Defining_Operator_Symbol;
6765 subtype N_Generic_Declaration is Node_Kind range
6766 N_Generic_Package_Declaration ..
6767 N_Generic_Subprogram_Declaration;
6769 subtype N_Generic_Instantiation is Node_Kind range
6770 N_Function_Instantiation ..
6771 N_Procedure_Instantiation;
6773 subtype N_Generic_Renaming_Declaration is Node_Kind range
6774 N_Generic_Function_Renaming_Declaration ..
6775 N_Generic_Procedure_Renaming_Declaration;
6777 subtype N_Has_Chars is Node_Kind range
6778 N_Attribute_Definition_Clause ..
6781 subtype N_Has_Entity is Node_Kind range
6783 N_Attribute_Reference;
6784 -- Nodes that have Entity fields
6785 -- Warning: DOES NOT INCLUDE N_Freeze_Entity!
6787 subtype N_Has_Etype is Node_Kind range
6789 N_Subtype_Indication;
6791 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
6795 subtype N_Later_Decl_Item is Node_Kind range
6796 N_Task_Type_Declaration ..
6797 N_Generic_Subprogram_Declaration;
6798 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and
6799 -- includes only those items which can appear as later declarative
6800 -- items. This also includes N_Implicit_Label_Declaration which is
6801 -- not specifically in the grammar but may appear as a valid later
6802 -- declarative items. It does NOT include N_Pragma which can also
6803 -- appear among later declarative items. It does however include
6804 -- N_Protected_Body, which is a bit peculiar, but harmless since
6805 -- this cannot appear in Ada 83 mode anyway.
6807 subtype N_Op is Node_Kind range
6811 subtype N_Op_Boolean is Node_Kind range
6814 -- Binary operators which take operands of a boolean type, and yield
6815 -- a result of a boolean type.
6817 subtype N_Op_Compare is Node_Kind range
6821 subtype N_Op_Shift is Node_Kind range
6823 N_Op_Shift_Right_Arithmetic;
6825 subtype N_Proper_Body is Node_Kind range
6829 subtype N_Raise_xxx_Error is Node_Kind range
6830 N_Raise_Constraint_Error ..
6831 N_Raise_Storage_Error;
6833 subtype N_Renaming_Declaration is Node_Kind range
6834 N_Exception_Renaming_Declaration ..
6835 N_Generic_Procedure_Renaming_Declaration;
6837 subtype N_Representation_Clause is Node_Kind range
6839 N_Attribute_Definition_Clause;
6841 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
6842 N_Abort_Statement ..
6844 -- Note that this includes all statement types except for the cases of the
6845 -- N_Procedure_Call_Statement which is considered to be a subexpression
6846 -- (since overloading is possible, so it needs to go through the normal
6847 -- overloading resolution for expressions).
6849 subtype N_Has_Condition is Node_Kind range
6851 N_Terminate_Alternative;
6852 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
6854 subtype N_Subexpr is Node_Kind range
6856 N_Unchecked_Type_Conversion;
6857 -- Nodes with expression fields
6859 subtype N_Subprogram_Specification is Node_Kind range
6860 N_Function_Specification ..
6861 N_Procedure_Specification;
6863 subtype N_Unary_Op is Node_Kind range
6867 subtype N_Unit_Body is Node_Kind range
6871 ---------------------------
6872 -- Node Access Functions --
6873 ---------------------------
6875 -- The following functions return the contents of the indicated field of
6876 -- the node referenced by the argument, which is a Node_Id. They provide
6877 -- logical access to fields in the node which could be accessed using the
6878 -- Atree.Unchecked_Access package, but the idea is always to use these
6879 -- higher level routines which preserve strong typing. In debug mode,
6880 -- these routines check that they are being applied to an appropriate
6881 -- node, as well as checking that the node is in range.
6883 function ABE_Is_Certain
6884 (N : Node_Id) return Boolean; -- Flag18
6886 function Abort_Present
6887 (N : Node_Id) return Boolean; -- Flag15
6889 function Abortable_Part
6890 (N : Node_Id) return Node_Id; -- Node2
6892 function Abstract_Present
6893 (N : Node_Id) return Boolean; -- Flag4
6895 function Accept_Handler_Records
6896 (N : Node_Id) return List_Id; -- List5
6898 function Accept_Statement
6899 (N : Node_Id) return Node_Id; -- Node2
6901 function Access_Definition
6902 (N : Node_Id) return Node_Id; -- Node3
6904 function Access_Types_To_Process
6905 (N : Node_Id) return Elist_Id; -- Elist2
6908 (N : Node_Id) return List_Id; -- List1
6910 function Activation_Chain_Entity
6911 (N : Node_Id) return Node_Id; -- Node3
6913 function Acts_As_Spec
6914 (N : Node_Id) return Boolean; -- Flag4
6916 function Aggregate_Bounds
6917 (N : Node_Id) return Node_Id; -- Node3
6919 function Aliased_Present
6920 (N : Node_Id) return Boolean; -- Flag4
6923 (N : Node_Id) return Boolean; -- Flag11
6925 function All_Present
6926 (N : Node_Id) return Boolean; -- Flag15
6928 function Alternatives
6929 (N : Node_Id) return List_Id; -- List4
6931 function Ancestor_Part
6932 (N : Node_Id) return Node_Id; -- Node3
6934 function Array_Aggregate
6935 (N : Node_Id) return Node_Id; -- Node3
6937 function Assignment_OK
6938 (N : Node_Id) return Boolean; -- Flag15
6940 function Associated_Node
6941 (N : Node_Id) return Node_Id; -- Node4
6943 function At_End_Proc
6944 (N : Node_Id) return Node_Id; -- Node1
6946 function Attribute_Name
6947 (N : Node_Id) return Name_Id; -- Name2
6949 function Aux_Decls_Node
6950 (N : Node_Id) return Node_Id; -- Node5
6952 function Backwards_OK
6953 (N : Node_Id) return Boolean; -- Flag6
6955 function Bad_Is_Detected
6956 (N : Node_Id) return Boolean; -- Flag15
6959 (N : Node_Id) return Boolean; -- Flag5
6961 function Body_Required
6962 (N : Node_Id) return Boolean; -- Flag13
6964 function Body_To_Inline
6965 (N : Node_Id) return Node_Id; -- Node3
6967 function Box_Present
6968 (N : Node_Id) return Boolean; -- Flag15
6970 function Char_Literal_Value
6971 (N : Node_Id) return Char_Code; -- Char_Code2
6974 (N : Node_Id) return Name_Id; -- Name1
6976 function Check_Address_Alignment
6977 (N : Node_Id) return Boolean; -- Flag11
6979 function Choice_Parameter
6980 (N : Node_Id) return Node_Id; -- Node2
6983 (N : Node_Id) return List_Id; -- List1
6985 function Compile_Time_Known_Aggregate
6986 (N : Node_Id) return Boolean; -- Flag18
6988 function Component_Associations
6989 (N : Node_Id) return List_Id; -- List2
6991 function Component_Clauses
6992 (N : Node_Id) return List_Id; -- List3
6994 function Component_Definition
6995 (N : Node_Id) return Node_Id; -- Node4
6997 function Component_Items
6998 (N : Node_Id) return List_Id; -- List3
7000 function Component_List
7001 (N : Node_Id) return Node_Id; -- Node1
7003 function Component_Name
7004 (N : Node_Id) return Node_Id; -- Node1
7007 (N : Node_Id) return Node_Id; -- Node1
7009 function Condition_Actions
7010 (N : Node_Id) return List_Id; -- List3
7012 function Config_Pragmas
7013 (N : Node_Id) return List_Id; -- List4
7015 function Constant_Present
7016 (N : Node_Id) return Boolean; -- Flag17
7019 (N : Node_Id) return Node_Id; -- Node3
7021 function Constraints
7022 (N : Node_Id) return List_Id; -- List1
7024 function Context_Installed
7025 (N : Node_Id) return Boolean; -- Flag13
7027 function Context_Items
7028 (N : Node_Id) return List_Id; -- List1
7030 function Controlling_Argument
7031 (N : Node_Id) return Node_Id; -- Node1
7033 function Conversion_OK
7034 (N : Node_Id) return Boolean; -- Flag14
7036 function Corresponding_Body
7037 (N : Node_Id) return Node_Id; -- Node5
7039 function Corresponding_Generic_Association
7040 (N : Node_Id) return Node_Id; -- Node5
7042 function Corresponding_Integer_Value
7043 (N : Node_Id) return Uint; -- Uint4
7045 function Corresponding_Spec
7046 (N : Node_Id) return Node_Id; -- Node5
7048 function Corresponding_Stub
7049 (N : Node_Id) return Node_Id; -- Node3
7051 function Dcheck_Function
7052 (N : Node_Id) return Entity_Id; -- Node5
7054 function Debug_Statement
7055 (N : Node_Id) return Node_Id; -- Node3
7057 function Declarations
7058 (N : Node_Id) return List_Id; -- List2
7060 function Default_Expression
7061 (N : Node_Id) return Node_Id; -- Node5
7063 function Default_Name
7064 (N : Node_Id) return Node_Id; -- Node2
7066 function Defining_Identifier
7067 (N : Node_Id) return Entity_Id; -- Node1
7069 function Defining_Unit_Name
7070 (N : Node_Id) return Node_Id; -- Node1
7072 function Delay_Alternative
7073 (N : Node_Id) return Node_Id; -- Node4
7075 function Delay_Finalize_Attach
7076 (N : Node_Id) return Boolean; -- Flag14
7078 function Delay_Statement
7079 (N : Node_Id) return Node_Id; -- Node2
7081 function Delta_Expression
7082 (N : Node_Id) return Node_Id; -- Node3
7084 function Digits_Expression
7085 (N : Node_Id) return Node_Id; -- Node2
7087 function Discr_Check_Funcs_Built
7088 (N : Node_Id) return Boolean; -- Flag11
7090 function Discrete_Choices
7091 (N : Node_Id) return List_Id; -- List4
7093 function Discrete_Range
7094 (N : Node_Id) return Node_Id; -- Node4
7096 function Discrete_Subtype_Definition
7097 (N : Node_Id) return Node_Id; -- Node4
7099 function Discrete_Subtype_Definitions
7100 (N : Node_Id) return List_Id; -- List2
7102 function Discriminant_Specifications
7103 (N : Node_Id) return List_Id; -- List4
7105 function Discriminant_Type
7106 (N : Node_Id) return Node_Id; -- Node5
7108 function Do_Accessibility_Check
7109 (N : Node_Id) return Boolean; -- Flag13
7111 function Do_Discriminant_Check
7112 (N : Node_Id) return Boolean; -- Flag13
7114 function Do_Division_Check
7115 (N : Node_Id) return Boolean; -- Flag13
7117 function Do_Length_Check
7118 (N : Node_Id) return Boolean; -- Flag4
7120 function Do_Overflow_Check
7121 (N : Node_Id) return Boolean; -- Flag17
7123 function Do_Range_Check
7124 (N : Node_Id) return Boolean; -- Flag9
7126 function Do_Storage_Check
7127 (N : Node_Id) return Boolean; -- Flag17
7129 function Do_Tag_Check
7130 (N : Node_Id) return Boolean; -- Flag13
7132 function Elaborate_All_Present
7133 (N : Node_Id) return Boolean; -- Flag14
7135 function Elaborate_Present
7136 (N : Node_Id) return Boolean; -- Flag4
7138 function Elaboration_Boolean
7139 (N : Node_Id) return Node_Id; -- Node2
7141 function Else_Actions
7142 (N : Node_Id) return List_Id; -- List3
7144 function Else_Statements
7145 (N : Node_Id) return List_Id; -- List4
7147 function Elsif_Parts
7148 (N : Node_Id) return List_Id; -- List3
7150 function Enclosing_Variant
7151 (N : Node_Id) return Node_Id; -- Node2
7154 (N : Node_Id) return Node_Id; -- Node4
7157 (N : Node_Id) return Uint; -- Uint5
7160 (N : Node_Id) return Node_Id; -- Node4
7162 function Entity_Or_Associated_Node
7163 (N : Node_Id) return Node_Id; -- Node4
7165 function Entry_Body_Formal_Part
7166 (N : Node_Id) return Node_Id; -- Node5
7168 function Entry_Call_Alternative
7169 (N : Node_Id) return Node_Id; -- Node1
7171 function Entry_Call_Statement
7172 (N : Node_Id) return Node_Id; -- Node1
7174 function Entry_Direct_Name
7175 (N : Node_Id) return Node_Id; -- Node1
7177 function Entry_Index
7178 (N : Node_Id) return Node_Id; -- Node5
7180 function Entry_Index_Specification
7181 (N : Node_Id) return Node_Id; -- Node4
7184 (N : Node_Id) return Node_Id; -- Node5
7186 function Exception_Choices
7187 (N : Node_Id) return List_Id; -- List4
7189 function Exception_Handlers
7190 (N : Node_Id) return List_Id; -- List5
7192 function Exception_Junk
7193 (N : Node_Id) return Boolean; -- Flag11
7195 function Explicit_Actual_Parameter
7196 (N : Node_Id) return Node_Id; -- Node3
7198 function Expansion_Delayed
7199 (N : Node_Id) return Boolean; -- Flag11
7201 function Explicit_Generic_Actual_Parameter
7202 (N : Node_Id) return Node_Id; -- Node1
7205 (N : Node_Id) return Node_Id; -- Node3
7207 function Expressions
7208 (N : Node_Id) return List_Id; -- List1
7211 (N : Node_Id) return Node_Id; -- Node3
7213 function First_Inlined_Subprogram
7214 (N : Node_Id) return Entity_Id; -- Node3
7217 (N : Node_Id) return Boolean; -- Flag5
7219 function First_Named_Actual
7220 (N : Node_Id) return Node_Id; -- Node4
7222 function First_Real_Statement
7223 (N : Node_Id) return Node_Id; -- Node2
7225 function First_Subtype_Link
7226 (N : Node_Id) return Entity_Id; -- Node5
7228 function Float_Truncate
7229 (N : Node_Id) return Boolean; -- Flag11
7231 function Formal_Type_Definition
7232 (N : Node_Id) return Node_Id; -- Node3
7234 function Forwards_OK
7235 (N : Node_Id) return Boolean; -- Flag5
7237 function From_At_Mod
7238 (N : Node_Id) return Boolean; -- Flag4
7240 function From_Default
7241 (N : Node_Id) return Boolean; -- Flag6
7243 function Generic_Associations
7244 (N : Node_Id) return List_Id; -- List3
7246 function Generic_Formal_Declarations
7247 (N : Node_Id) return List_Id; -- List2
7249 function Generic_Parent
7250 (N : Node_Id) return Node_Id; -- Node5
7252 function Generic_Parent_Type
7253 (N : Node_Id) return Node_Id; -- Node4
7255 function Handled_Statement_Sequence
7256 (N : Node_Id) return Node_Id; -- Node4
7258 function Handler_List_Entry
7259 (N : Node_Id) return Node_Id; -- Node2
7261 function Has_Created_Identifier
7262 (N : Node_Id) return Boolean; -- Flag15
7264 function Has_Dynamic_Length_Check
7265 (N : Node_Id) return Boolean; -- Flag10
7267 function Has_Dynamic_Range_Check
7268 (N : Node_Id) return Boolean; -- Flag12
7270 function Has_No_Elaboration_Code
7271 (N : Node_Id) return Boolean; -- Flag17
7273 function Has_Priority_Pragma
7274 (N : Node_Id) return Boolean; -- Flag6
7276 function Has_Private_View
7277 (N : Node_Id) return Boolean; -- Flag11
7279 function Has_Storage_Size_Pragma
7280 (N : Node_Id) return Boolean; -- Flag5
7282 function Has_Task_Info_Pragma
7283 (N : Node_Id) return Boolean; -- Flag7
7285 function Has_Task_Name_Pragma
7286 (N : Node_Id) return Boolean; -- Flag8
7288 function Has_Wide_Character
7289 (N : Node_Id) return Boolean; -- Flag11
7291 function Hidden_By_Use_Clause
7292 (N : Node_Id) return Elist_Id; -- Elist4
7295 (N : Node_Id) return Node_Id; -- Node2
7298 (N : Node_Id) return Node_Id; -- Node1
7300 function Implicit_With
7301 (N : Node_Id) return Boolean; -- Flag16
7304 (N : Node_Id) return Boolean; -- Flag15
7306 function Includes_Infinities
7307 (N : Node_Id) return Boolean; -- Flag11
7309 function Instance_Spec
7310 (N : Node_Id) return Node_Id; -- Node5
7313 (N : Node_Id) return Uint; -- Uint3
7315 function Is_Asynchronous_Call_Block
7316 (N : Node_Id) return Boolean; -- Flag7
7318 function Is_Component_Left_Opnd
7319 (N : Node_Id) return Boolean; -- Flag13
7321 function Is_Component_Right_Opnd
7322 (N : Node_Id) return Boolean; -- Flag14
7324 function Is_Controlling_Actual
7325 (N : Node_Id) return Boolean; -- Flag16
7327 function Is_In_Discriminant_Check
7328 (N : Node_Id) return Boolean; -- Flag11
7330 function Is_Machine_Number
7331 (N : Node_Id) return Boolean; -- Flag11
7333 function Is_Null_Loop
7334 (N : Node_Id) return Boolean; -- Flag16
7336 function Is_Overloaded
7337 (N : Node_Id) return Boolean; -- Flag5
7339 function Is_Power_Of_2_For_Shift
7340 (N : Node_Id) return Boolean; -- Flag13
7342 function Is_Protected_Subprogram_Body
7343 (N : Node_Id) return Boolean; -- Flag7
7345 function Is_Static_Expression
7346 (N : Node_Id) return Boolean; -- Flag6
7348 function Is_Subprogram_Descriptor
7349 (N : Node_Id) return Boolean; -- Flag16
7351 function Is_Task_Allocation_Block
7352 (N : Node_Id) return Boolean; -- Flag6
7354 function Is_Task_Master
7355 (N : Node_Id) return Boolean; -- Flag5
7357 function Iteration_Scheme
7358 (N : Node_Id) return Node_Id; -- Node2
7361 (N : Node_Id) return Entity_Id; -- Node1
7363 function Kill_Range_Check
7364 (N : Node_Id) return Boolean; -- Flag11
7366 function Label_Construct
7367 (N : Node_Id) return Node_Id; -- Node2
7370 (N : Node_Id) return Node_Id; -- Node2
7373 (N : Node_Id) return Node_Id; -- Node4
7376 (N : Node_Id) return Boolean; -- Flag6
7378 function Library_Unit
7379 (N : Node_Id) return Node_Id; -- Node4
7381 function Limited_View_Installed
7382 (N : Node_Id) return Boolean; -- Flag18
7384 function Limited_Present
7385 (N : Node_Id) return Boolean; -- Flag17
7388 (N : Node_Id) return List_Id; -- List1
7390 function Loop_Actions
7391 (N : Node_Id) return List_Id; -- List2
7393 function Loop_Parameter_Specification
7394 (N : Node_Id) return Node_Id; -- Node4
7397 (N : Node_Id) return Node_Id; -- Node1
7400 (N : Node_Id) return Node_Id; -- Node2
7403 (N : Node_Id) return Boolean; -- Flag5
7405 function Must_Be_Byte_Aligned
7406 (N : Node_Id) return Boolean; -- Flag14
7408 function Must_Not_Freeze
7409 (N : Node_Id) return Boolean; -- Flag8
7412 (N : Node_Id) return Node_Id; -- Node2
7415 (N : Node_Id) return List_Id; -- List2
7417 function Next_Entity
7418 (N : Node_Id) return Node_Id; -- Node2
7420 function Next_Named_Actual
7421 (N : Node_Id) return Node_Id; -- Node4
7423 function Next_Rep_Item
7424 (N : Node_Id) return Node_Id; -- Node4
7426 function Next_Use_Clause
7427 (N : Node_Id) return Node_Id; -- Node3
7429 function No_Ctrl_Actions
7430 (N : Node_Id) return Boolean; -- Flag7
7432 function No_Elaboration_Check
7433 (N : Node_Id) return Boolean; -- Flag14
7435 function No_Entities_Ref_In_Spec
7436 (N : Node_Id) return Boolean; -- Flag8
7438 function No_Initialization
7439 (N : Node_Id) return Boolean; -- Flag13
7441 function No_Truncation
7442 (N : Node_Id) return Boolean; -- Flag17
7444 function Null_Present
7445 (N : Node_Id) return Boolean; -- Flag13
7447 function Null_Record_Present
7448 (N : Node_Id) return Boolean; -- Flag17
7450 function Object_Definition
7451 (N : Node_Id) return Node_Id; -- Node4
7453 function OK_For_Stream
7454 (N : Node_Id) return Boolean; -- Flag4
7456 function Original_Discriminant
7457 (N : Node_Id) return Node_Id; -- Node2
7459 function Original_Entity
7460 (N : Node_Id) return Entity_Id; -- Node2
7462 function Others_Discrete_Choices
7463 (N : Node_Id) return List_Id; -- List1
7465 function Out_Present
7466 (N : Node_Id) return Boolean; -- Flag17
7468 function Parameter_Associations
7469 (N : Node_Id) return List_Id; -- List3
7471 function Parameter_List_Truncated
7472 (N : Node_Id) return Boolean; -- Flag17
7474 function Parameter_Specifications
7475 (N : Node_Id) return List_Id; -- List3
7477 function Parameter_Type
7478 (N : Node_Id) return Node_Id; -- Node2
7480 function Parent_Spec
7481 (N : Node_Id) return Node_Id; -- Node4
7484 (N : Node_Id) return Node_Id; -- Node2
7486 function Pragma_Argument_Associations
7487 (N : Node_Id) return List_Id; -- List2
7489 function Pragmas_After
7490 (N : Node_Id) return List_Id; -- List5
7492 function Pragmas_Before
7493 (N : Node_Id) return List_Id; -- List4
7496 (N : Node_Id) return Node_Id; -- Node3
7498 function Present_Expr
7499 (N : Node_Id) return Uint; -- Uint3
7502 (N : Node_Id) return Boolean; -- Flag6
7504 function Print_In_Hex
7505 (N : Node_Id) return Boolean; -- Flag13
7507 function Private_Declarations
7508 (N : Node_Id) return List_Id; -- List3
7510 function Private_Present
7511 (N : Node_Id) return Boolean; -- Flag15
7513 function Procedure_To_Call
7514 (N : Node_Id) return Node_Id; -- Node4
7516 function Proper_Body
7517 (N : Node_Id) return Node_Id; -- Node1
7519 function Protected_Definition
7520 (N : Node_Id) return Node_Id; -- Node3
7522 function Protected_Present
7523 (N : Node_Id) return Boolean; -- Flag15
7525 function Raises_Constraint_Error
7526 (N : Node_Id) return Boolean; -- Flag7
7528 function Range_Constraint
7529 (N : Node_Id) return Node_Id; -- Node4
7531 function Range_Expression
7532 (N : Node_Id) return Node_Id; -- Node4
7534 function Real_Range_Specification
7535 (N : Node_Id) return Node_Id; -- Node4
7538 (N : Node_Id) return Ureal; -- Ureal3
7541 (N : Node_Id) return Uint; -- Uint3
7543 function Record_Extension_Part
7544 (N : Node_Id) return Node_Id; -- Node3
7546 function Redundant_Use
7547 (N : Node_Id) return Boolean; -- Flag13
7549 function Return_Type
7550 (N : Node_Id) return Node_Id; -- Node2
7552 function Reverse_Present
7553 (N : Node_Id) return Boolean; -- Flag15
7556 (N : Node_Id) return Node_Id; -- Node3
7558 function Rounded_Result
7559 (N : Node_Id) return Boolean; -- Flag18
7562 (N : Node_Id) return Node_Id; -- Node3
7564 function Select_Alternatives
7565 (N : Node_Id) return List_Id; -- List1
7567 function Selector_Name
7568 (N : Node_Id) return Node_Id; -- Node2
7570 function Selector_Names
7571 (N : Node_Id) return List_Id; -- List1
7573 function Shift_Count_OK
7574 (N : Node_Id) return Boolean; -- Flag4
7576 function Source_Type
7577 (N : Node_Id) return Entity_Id; -- Node1
7579 function Specification
7580 (N : Node_Id) return Node_Id; -- Node1
7583 (N : Node_Id) return List_Id; -- List3
7585 function Static_Processing_OK
7586 (N : Node_Id) return Boolean; -- Flag4
7588 function Storage_Pool
7589 (N : Node_Id) return Node_Id; -- Node1
7592 (N : Node_Id) return String_Id; -- Str3
7594 function Subtype_Indication
7595 (N : Node_Id) return Node_Id; -- Node5
7597 function Subtype_Mark
7598 (N : Node_Id) return Node_Id; -- Node4
7600 function Subtype_Marks
7601 (N : Node_Id) return List_Id; -- List2
7603 function Tagged_Present
7604 (N : Node_Id) return Boolean; -- Flag15
7606 function Target_Type
7607 (N : Node_Id) return Entity_Id; -- Node2
7609 function Task_Body_Procedure
7610 (N : Node_Id) return Entity_Id; -- Node2
7612 function Task_Definition
7613 (N : Node_Id) return Node_Id; -- Node3
7615 function Then_Actions
7616 (N : Node_Id) return List_Id; -- List2
7618 function Then_Statements
7619 (N : Node_Id) return List_Id; -- List2
7621 function Treat_Fixed_As_Integer
7622 (N : Node_Id) return Boolean; -- Flag14
7624 function Triggering_Alternative
7625 (N : Node_Id) return Node_Id; -- Node1
7627 function Triggering_Statement
7628 (N : Node_Id) return Node_Id; -- Node1
7631 (N : Node_Id) return Elist_Id; -- Elist3
7633 function Type_Definition
7634 (N : Node_Id) return Node_Id; -- Node3
7637 (N : Node_Id) return Node_Id; -- Node2
7639 function Unknown_Discriminants_Present
7640 (N : Node_Id) return Boolean; -- Flag13
7642 function Unreferenced_In_Spec
7643 (N : Node_Id) return Boolean; -- Flag7
7645 function Variant_Part
7646 (N : Node_Id) return Node_Id; -- Node4
7649 (N : Node_Id) return List_Id; -- List1
7651 function Visible_Declarations
7652 (N : Node_Id) return List_Id; -- List2
7654 function Was_Originally_Stub
7655 (N : Node_Id) return Boolean; -- Flag13
7657 function Zero_Cost_Handling
7658 (N : Node_Id) return Boolean; -- Flag5
7660 -- End functions (note used by xsinfo utility program to end processing)
7662 ----------------------------
7663 -- Node Update Procedures --
7664 ----------------------------
7666 -- These are the corresponding node update routines, which again provide
7667 -- a high level logical access with type checking. In addition to setting
7668 -- the indicated field of the node N to the given Val, in the case of
7669 -- tree pointers (List1-4), the parent pointer of the Val node is set to
7670 -- point back to node N. This automates the setting of the parent pointer.
7672 procedure Set_ABE_Is_Certain
7673 (N : Node_Id; Val : Boolean := True); -- Flag18
7675 procedure Set_Abort_Present
7676 (N : Node_Id; Val : Boolean := True); -- Flag15
7678 procedure Set_Abortable_Part
7679 (N : Node_Id; Val : Node_Id); -- Node2
7681 procedure Set_Abstract_Present
7682 (N : Node_Id; Val : Boolean := True); -- Flag4
7684 procedure Set_Accept_Handler_Records
7685 (N : Node_Id; Val : List_Id); -- List5
7687 procedure Set_Accept_Statement
7688 (N : Node_Id; Val : Node_Id); -- Node2
7690 procedure Set_Access_Definition
7691 (N : Node_Id; Val : Node_Id); -- Node3
7693 procedure Set_Access_Types_To_Process
7694 (N : Node_Id; Val : Elist_Id); -- Elist2
7696 procedure Set_Actions
7697 (N : Node_Id; Val : List_Id); -- List1
7699 procedure Set_Activation_Chain_Entity
7700 (N : Node_Id; Val : Node_Id); -- Node3
7702 procedure Set_Acts_As_Spec
7703 (N : Node_Id; Val : Boolean := True); -- Flag4
7705 procedure Set_Aggregate_Bounds
7706 (N : Node_Id; Val : Node_Id); -- Node3
7708 procedure Set_Aliased_Present
7709 (N : Node_Id; Val : Boolean := True); -- Flag4
7711 procedure Set_All_Others
7712 (N : Node_Id; Val : Boolean := True); -- Flag11
7714 procedure Set_All_Present
7715 (N : Node_Id; Val : Boolean := True); -- Flag15
7717 procedure Set_Alternatives
7718 (N : Node_Id; Val : List_Id); -- List4
7720 procedure Set_Ancestor_Part
7721 (N : Node_Id; Val : Node_Id); -- Node3
7723 procedure Set_Array_Aggregate
7724 (N : Node_Id; Val : Node_Id); -- Node3
7726 procedure Set_Assignment_OK
7727 (N : Node_Id; Val : Boolean := True); -- Flag15
7729 procedure Set_Associated_Node
7730 (N : Node_Id; Val : Node_Id); -- Node4
7732 procedure Set_Attribute_Name
7733 (N : Node_Id; Val : Name_Id); -- Name2
7735 procedure Set_At_End_Proc
7736 (N : Node_Id; Val : Node_Id); -- Node1
7738 procedure Set_Aux_Decls_Node
7739 (N : Node_Id; Val : Node_Id); -- Node5
7741 procedure Set_Backwards_OK
7742 (N : Node_Id; Val : Boolean := True); -- Flag6
7744 procedure Set_Bad_Is_Detected
7745 (N : Node_Id; Val : Boolean := True); -- Flag15
7747 procedure Set_Body_Required
7748 (N : Node_Id; Val : Boolean := True); -- Flag13
7750 procedure Set_Body_To_Inline
7751 (N : Node_Id; Val : Node_Id); -- Node3
7753 procedure Set_Box_Present
7754 (N : Node_Id; Val : Boolean := True); -- Flag15
7756 procedure Set_By_Ref
7757 (N : Node_Id; Val : Boolean := True); -- Flag5
7759 procedure Set_Char_Literal_Value
7760 (N : Node_Id; Val : Char_Code); -- Char_Code2
7763 (N : Node_Id; Val : Name_Id); -- Name1
7765 procedure Set_Check_Address_Alignment
7766 (N : Node_Id; Val : Boolean := True); -- Flag11
7768 procedure Set_Choice_Parameter
7769 (N : Node_Id; Val : Node_Id); -- Node2
7771 procedure Set_Choices
7772 (N : Node_Id; Val : List_Id); -- List1
7774 procedure Set_Compile_Time_Known_Aggregate
7775 (N : Node_Id; Val : Boolean := True); -- Flag18
7777 procedure Set_Component_Associations
7778 (N : Node_Id; Val : List_Id); -- List2
7780 procedure Set_Component_Clauses
7781 (N : Node_Id; Val : List_Id); -- List3
7783 procedure Set_Component_Definition
7784 (N : Node_Id; Val : Node_Id); -- Node4
7786 procedure Set_Component_Items
7787 (N : Node_Id; Val : List_Id); -- List3
7789 procedure Set_Component_List
7790 (N : Node_Id; Val : Node_Id); -- Node1
7792 procedure Set_Component_Name
7793 (N : Node_Id; Val : Node_Id); -- Node1
7795 procedure Set_Condition
7796 (N : Node_Id; Val : Node_Id); -- Node1
7798 procedure Set_Condition_Actions
7799 (N : Node_Id; Val : List_Id); -- List3
7801 procedure Set_Config_Pragmas
7802 (N : Node_Id; Val : List_Id); -- List4
7804 procedure Set_Constant_Present
7805 (N : Node_Id; Val : Boolean := True); -- Flag17
7807 procedure Set_Constraint
7808 (N : Node_Id; Val : Node_Id); -- Node3
7810 procedure Set_Constraints
7811 (N : Node_Id; Val : List_Id); -- List1
7813 procedure Set_Context_Installed
7814 (N : Node_Id; Val : Boolean := True); -- Flag13
7816 procedure Set_Context_Items
7817 (N : Node_Id; Val : List_Id); -- List1
7819 procedure Set_Controlling_Argument
7820 (N : Node_Id; Val : Node_Id); -- Node1
7822 procedure Set_Conversion_OK
7823 (N : Node_Id; Val : Boolean := True); -- Flag14
7825 procedure Set_Corresponding_Body
7826 (N : Node_Id; Val : Node_Id); -- Node5
7828 procedure Set_Corresponding_Generic_Association
7829 (N : Node_Id; Val : Node_Id); -- Node5
7831 procedure Set_Corresponding_Integer_Value
7832 (N : Node_Id; Val : Uint); -- Uint4
7834 procedure Set_Corresponding_Spec
7835 (N : Node_Id; Val : Node_Id); -- Node5
7837 procedure Set_Corresponding_Stub
7838 (N : Node_Id; Val : Node_Id); -- Node3
7840 procedure Set_Dcheck_Function
7841 (N : Node_Id; Val : Entity_Id); -- Node5
7843 procedure Set_Debug_Statement
7844 (N : Node_Id; Val : Node_Id); -- Node3
7846 procedure Set_Declarations
7847 (N : Node_Id; Val : List_Id); -- List2
7849 procedure Set_Default_Expression
7850 (N : Node_Id; Val : Node_Id); -- Node5
7852 procedure Set_Default_Name
7853 (N : Node_Id; Val : Node_Id); -- Node2
7855 procedure Set_Defining_Identifier
7856 (N : Node_Id; Val : Entity_Id); -- Node1
7858 procedure Set_Defining_Unit_Name
7859 (N : Node_Id; Val : Node_Id); -- Node1
7861 procedure Set_Delay_Alternative
7862 (N : Node_Id; Val : Node_Id); -- Node4
7864 procedure Set_Delay_Finalize_Attach
7865 (N : Node_Id; Val : Boolean := True); -- Flag14
7867 procedure Set_Delay_Statement
7868 (N : Node_Id; Val : Node_Id); -- Node2
7870 procedure Set_Delta_Expression
7871 (N : Node_Id; Val : Node_Id); -- Node3
7873 procedure Set_Digits_Expression
7874 (N : Node_Id; Val : Node_Id); -- Node2
7876 procedure Set_Discr_Check_Funcs_Built
7877 (N : Node_Id; Val : Boolean := True); -- Flag11
7879 procedure Set_Discrete_Choices
7880 (N : Node_Id; Val : List_Id); -- List4
7882 procedure Set_Discrete_Range
7883 (N : Node_Id; Val : Node_Id); -- Node4
7885 procedure Set_Discrete_Subtype_Definition
7886 (N : Node_Id; Val : Node_Id); -- Node4
7888 procedure Set_Discrete_Subtype_Definitions
7889 (N : Node_Id; Val : List_Id); -- List2
7891 procedure Set_Discriminant_Specifications
7892 (N : Node_Id; Val : List_Id); -- List4
7894 procedure Set_Discriminant_Type
7895 (N : Node_Id; Val : Node_Id); -- Node5
7897 procedure Set_Do_Accessibility_Check
7898 (N : Node_Id; Val : Boolean := True); -- Flag13
7900 procedure Set_Do_Discriminant_Check
7901 (N : Node_Id; Val : Boolean := True); -- Flag13
7903 procedure Set_Do_Division_Check
7904 (N : Node_Id; Val : Boolean := True); -- Flag13
7906 procedure Set_Do_Length_Check
7907 (N : Node_Id; Val : Boolean := True); -- Flag4
7909 procedure Set_Do_Overflow_Check
7910 (N : Node_Id; Val : Boolean := True); -- Flag17
7912 procedure Set_Do_Range_Check
7913 (N : Node_Id; Val : Boolean := True); -- Flag9
7915 procedure Set_Do_Storage_Check
7916 (N : Node_Id; Val : Boolean := True); -- Flag17
7918 procedure Set_Do_Tag_Check
7919 (N : Node_Id; Val : Boolean := True); -- Flag13
7921 procedure Set_Elaborate_All_Present
7922 (N : Node_Id; Val : Boolean := True); -- Flag14
7924 procedure Set_Elaborate_Present
7925 (N : Node_Id; Val : Boolean := True); -- Flag4
7927 procedure Set_Elaboration_Boolean
7928 (N : Node_Id; Val : Node_Id); -- Node2
7930 procedure Set_Else_Actions
7931 (N : Node_Id; Val : List_Id); -- List3
7933 procedure Set_Else_Statements
7934 (N : Node_Id; Val : List_Id); -- List4
7936 procedure Set_Elsif_Parts
7937 (N : Node_Id; Val : List_Id); -- List3
7939 procedure Set_Enclosing_Variant
7940 (N : Node_Id; Val : Node_Id); -- Node2
7942 procedure Set_End_Label
7943 (N : Node_Id; Val : Node_Id); -- Node4
7945 procedure Set_End_Span
7946 (N : Node_Id; Val : Uint); -- Uint5
7948 procedure Set_Entity
7949 (N : Node_Id; Val : Node_Id); -- Node4
7951 procedure Set_Entry_Body_Formal_Part
7952 (N : Node_Id; Val : Node_Id); -- Node5
7954 procedure Set_Entry_Call_Alternative
7955 (N : Node_Id; Val : Node_Id); -- Node1
7957 procedure Set_Entry_Call_Statement
7958 (N : Node_Id; Val : Node_Id); -- Node1
7960 procedure Set_Entry_Direct_Name
7961 (N : Node_Id; Val : Node_Id); -- Node1
7963 procedure Set_Entry_Index
7964 (N : Node_Id; Val : Node_Id); -- Node5
7966 procedure Set_Entry_Index_Specification
7967 (N : Node_Id; Val : Node_Id); -- Node4
7970 (N : Node_Id; Val : Node_Id); -- Node5
7972 procedure Set_Exception_Choices
7973 (N : Node_Id; Val : List_Id); -- List4
7975 procedure Set_Exception_Handlers
7976 (N : Node_Id; Val : List_Id); -- List5
7978 procedure Set_Exception_Junk
7979 (N : Node_Id; Val : Boolean := True); -- Flag11
7981 procedure Set_Expansion_Delayed
7982 (N : Node_Id; Val : Boolean := True); -- Flag11
7984 procedure Set_Explicit_Actual_Parameter
7985 (N : Node_Id; Val : Node_Id); -- Node3
7987 procedure Set_Explicit_Generic_Actual_Parameter
7988 (N : Node_Id; Val : Node_Id); -- Node1
7990 procedure Set_Expression
7991 (N : Node_Id; Val : Node_Id); -- Node3
7993 procedure Set_Expressions
7994 (N : Node_Id; Val : List_Id); -- List1
7996 procedure Set_First_Bit
7997 (N : Node_Id; Val : Node_Id); -- Node3
7999 procedure Set_First_Inlined_Subprogram
8000 (N : Node_Id; Val : Entity_Id); -- Node3
8002 procedure Set_First_Name
8003 (N : Node_Id; Val : Boolean := True); -- Flag5
8005 procedure Set_First_Named_Actual
8006 (N : Node_Id; Val : Node_Id); -- Node4
8008 procedure Set_First_Real_Statement
8009 (N : Node_Id; Val : Node_Id); -- Node2
8011 procedure Set_First_Subtype_Link
8012 (N : Node_Id; Val : Entity_Id); -- Node5
8014 procedure Set_Float_Truncate
8015 (N : Node_Id; Val : Boolean := True); -- Flag11
8017 procedure Set_Formal_Type_Definition
8018 (N : Node_Id; Val : Node_Id); -- Node3
8020 procedure Set_Forwards_OK
8021 (N : Node_Id; Val : Boolean := True); -- Flag5
8023 procedure Set_From_At_Mod
8024 (N : Node_Id; Val : Boolean := True); -- Flag4
8026 procedure Set_From_Default
8027 (N : Node_Id; Val : Boolean := True); -- Flag6
8029 procedure Set_Generic_Associations
8030 (N : Node_Id; Val : List_Id); -- List3
8032 procedure Set_Generic_Formal_Declarations
8033 (N : Node_Id; Val : List_Id); -- List2
8035 procedure Set_Generic_Parent
8036 (N : Node_Id; Val : Node_Id); -- Node5
8038 procedure Set_Generic_Parent_Type
8039 (N : Node_Id; Val : Node_Id); -- Node4
8041 procedure Set_Handled_Statement_Sequence
8042 (N : Node_Id; Val : Node_Id); -- Node4
8044 procedure Set_Handler_List_Entry
8045 (N : Node_Id; Val : Node_Id); -- Node2
8047 procedure Set_Has_Created_Identifier
8048 (N : Node_Id; Val : Boolean := True); -- Flag15
8050 procedure Set_Has_Dynamic_Length_Check
8051 (N : Node_Id; Val : Boolean := True); -- Flag10
8053 procedure Set_Has_Dynamic_Range_Check
8054 (N : Node_Id; Val : Boolean := True); -- Flag12
8056 procedure Set_Has_No_Elaboration_Code
8057 (N : Node_Id; Val : Boolean := True); -- Flag17
8059 procedure Set_Has_Priority_Pragma
8060 (N : Node_Id; Val : Boolean := True); -- Flag6
8062 procedure Set_Has_Private_View
8063 (N : Node_Id; Val : Boolean := True); -- Flag11
8065 procedure Set_Has_Storage_Size_Pragma
8066 (N : Node_Id; Val : Boolean := True); -- Flag5
8068 procedure Set_Has_Task_Info_Pragma
8069 (N : Node_Id; Val : Boolean := True); -- Flag7
8071 procedure Set_Has_Task_Name_Pragma
8072 (N : Node_Id; Val : Boolean := True); -- Flag8
8074 procedure Set_Has_Wide_Character
8075 (N : Node_Id; Val : Boolean := True); -- Flag11
8077 procedure Set_Hidden_By_Use_Clause
8078 (N : Node_Id; Val : Elist_Id); -- Elist4
8080 procedure Set_High_Bound
8081 (N : Node_Id; Val : Node_Id); -- Node2
8083 procedure Set_Identifier
8084 (N : Node_Id; Val : Node_Id); -- Node1
8086 procedure Set_Implicit_With
8087 (N : Node_Id; Val : Boolean := True); -- Flag16
8089 procedure Set_In_Present
8090 (N : Node_Id; Val : Boolean := True); -- Flag15
8092 procedure Set_Includes_Infinities
8093 (N : Node_Id; Val : Boolean := True); -- Flag11
8095 procedure Set_Instance_Spec
8096 (N : Node_Id; Val : Node_Id); -- Node5
8098 procedure Set_Intval
8099 (N : Node_Id; Val : Uint); -- Uint3
8101 procedure Set_Is_Asynchronous_Call_Block
8102 (N : Node_Id; Val : Boolean := True); -- Flag7
8104 procedure Set_Is_Component_Left_Opnd
8105 (N : Node_Id; Val : Boolean := True); -- Flag13
8107 procedure Set_Is_Component_Right_Opnd
8108 (N : Node_Id; Val : Boolean := True); -- Flag14
8110 procedure Set_Is_Controlling_Actual
8111 (N : Node_Id; Val : Boolean := True); -- Flag16
8113 procedure Set_Is_In_Discriminant_Check
8114 (N : Node_Id; Val : Boolean := True); -- Flag11
8116 procedure Set_Is_Machine_Number
8117 (N : Node_Id; Val : Boolean := True); -- Flag11
8119 procedure Set_Is_Null_Loop
8120 (N : Node_Id; Val : Boolean := True); -- Flag16
8122 procedure Set_Is_Overloaded
8123 (N : Node_Id; Val : Boolean := True); -- Flag5
8125 procedure Set_Is_Power_Of_2_For_Shift
8126 (N : Node_Id; Val : Boolean := True); -- Flag13
8128 procedure Set_Is_Protected_Subprogram_Body
8129 (N : Node_Id; Val : Boolean := True); -- Flag7
8131 procedure Set_Is_Static_Expression
8132 (N : Node_Id; Val : Boolean := True); -- Flag6
8134 procedure Set_Is_Subprogram_Descriptor
8135 (N : Node_Id; Val : Boolean := True); -- Flag16
8137 procedure Set_Is_Task_Allocation_Block
8138 (N : Node_Id; Val : Boolean := True); -- Flag6
8140 procedure Set_Is_Task_Master
8141 (N : Node_Id; Val : Boolean := True); -- Flag5
8143 procedure Set_Iteration_Scheme
8144 (N : Node_Id; Val : Node_Id); -- Node2
8147 (N : Node_Id; Val : Entity_Id); -- Node1
8149 procedure Set_Kill_Range_Check
8150 (N : Node_Id; Val : Boolean := True); -- Flag11
8152 procedure Set_Last_Bit
8153 (N : Node_Id; Val : Node_Id); -- Node4
8155 procedure Set_Last_Name
8156 (N : Node_Id; Val : Boolean := True); -- Flag6
8158 procedure Set_Library_Unit
8159 (N : Node_Id; Val : Node_Id); -- Node4
8161 procedure Set_Label_Construct
8162 (N : Node_Id; Val : Node_Id); -- Node2
8164 procedure Set_Left_Opnd
8165 (N : Node_Id; Val : Node_Id); -- Node2
8167 procedure Set_Limited_View_Installed
8168 (N : Node_Id; Val : Boolean := True); -- Flag18
8170 procedure Set_Limited_Present
8171 (N : Node_Id; Val : Boolean := True); -- Flag17
8173 procedure Set_Literals
8174 (N : Node_Id; Val : List_Id); -- List1
8176 procedure Set_Loop_Actions
8177 (N : Node_Id; Val : List_Id); -- List2
8179 procedure Set_Loop_Parameter_Specification
8180 (N : Node_Id; Val : Node_Id); -- Node4
8182 procedure Set_Low_Bound
8183 (N : Node_Id; Val : Node_Id); -- Node1
8185 procedure Set_Mod_Clause
8186 (N : Node_Id; Val : Node_Id); -- Node2
8188 procedure Set_More_Ids
8189 (N : Node_Id; Val : Boolean := True); -- Flag5
8191 procedure Set_Must_Be_Byte_Aligned
8192 (N : Node_Id; Val : Boolean := True); -- Flag14
8194 procedure Set_Must_Not_Freeze
8195 (N : Node_Id; Val : Boolean := True); -- Flag8
8198 (N : Node_Id; Val : Node_Id); -- Node2
8201 (N : Node_Id; Val : List_Id); -- List2
8203 procedure Set_Next_Entity
8204 (N : Node_Id; Val : Node_Id); -- Node2
8206 procedure Set_Next_Named_Actual
8207 (N : Node_Id; Val : Node_Id); -- Node4
8209 procedure Set_Next_Rep_Item
8210 (N : Node_Id; Val : Node_Id); -- Node4
8212 procedure Set_Next_Use_Clause
8213 (N : Node_Id; Val : Node_Id); -- Node3
8215 procedure Set_No_Ctrl_Actions
8216 (N : Node_Id; Val : Boolean := True); -- Flag7
8218 procedure Set_No_Elaboration_Check
8219 (N : Node_Id; Val : Boolean := True); -- Flag14
8221 procedure Set_No_Entities_Ref_In_Spec
8222 (N : Node_Id; Val : Boolean := True); -- Flag8
8224 procedure Set_No_Initialization
8225 (N : Node_Id; Val : Boolean := True); -- Flag13
8227 procedure Set_No_Truncation
8228 (N : Node_Id; Val : Boolean := True); -- Flag17
8230 procedure Set_Null_Present
8231 (N : Node_Id; Val : Boolean := True); -- Flag13
8233 procedure Set_Null_Record_Present
8234 (N : Node_Id; Val : Boolean := True); -- Flag17
8236 procedure Set_Object_Definition
8237 (N : Node_Id; Val : Node_Id); -- Node4
8239 procedure Set_OK_For_Stream
8240 (N : Node_Id; Val : Boolean := True); -- Flag4
8242 procedure Set_Original_Discriminant
8243 (N : Node_Id; Val : Node_Id); -- Node2
8245 procedure Set_Original_Entity
8246 (N : Node_Id; Val : Entity_Id); -- Node2
8248 procedure Set_Others_Discrete_Choices
8249 (N : Node_Id; Val : List_Id); -- List1
8251 procedure Set_Out_Present
8252 (N : Node_Id; Val : Boolean := True); -- Flag17
8254 procedure Set_Parameter_Associations
8255 (N : Node_Id; Val : List_Id); -- List3
8257 procedure Set_Parameter_List_Truncated
8258 (N : Node_Id; Val : Boolean := True); -- Flag17
8260 procedure Set_Parameter_Specifications
8261 (N : Node_Id; Val : List_Id); -- List3
8263 procedure Set_Parameter_Type
8264 (N : Node_Id; Val : Node_Id); -- Node2
8266 procedure Set_Parent_Spec
8267 (N : Node_Id; Val : Node_Id); -- Node4
8269 procedure Set_Position
8270 (N : Node_Id; Val : Node_Id); -- Node2
8272 procedure Set_Pragma_Argument_Associations
8273 (N : Node_Id; Val : List_Id); -- List2
8275 procedure Set_Pragmas_After
8276 (N : Node_Id; Val : List_Id); -- List5
8278 procedure Set_Pragmas_Before
8279 (N : Node_Id; Val : List_Id); -- List4
8281 procedure Set_Prefix
8282 (N : Node_Id; Val : Node_Id); -- Node3
8284 procedure Set_Present_Expr
8285 (N : Node_Id; Val : Uint); -- Uint3
8287 procedure Set_Prev_Ids
8288 (N : Node_Id; Val : Boolean := True); -- Flag6
8290 procedure Set_Print_In_Hex
8291 (N : Node_Id; Val : Boolean := True); -- Flag13
8293 procedure Set_Private_Declarations
8294 (N : Node_Id; Val : List_Id); -- List3
8296 procedure Set_Private_Present
8297 (N : Node_Id; Val : Boolean := True); -- Flag15
8299 procedure Set_Procedure_To_Call
8300 (N : Node_Id; Val : Node_Id); -- Node4
8302 procedure Set_Proper_Body
8303 (N : Node_Id; Val : Node_Id); -- Node1
8305 procedure Set_Protected_Definition
8306 (N : Node_Id; Val : Node_Id); -- Node3
8308 procedure Set_Protected_Present
8309 (N : Node_Id; Val : Boolean := True); -- Flag15
8311 procedure Set_Raises_Constraint_Error
8312 (N : Node_Id; Val : Boolean := True); -- Flag7
8314 procedure Set_Range_Constraint
8315 (N : Node_Id; Val : Node_Id); -- Node4
8317 procedure Set_Range_Expression
8318 (N : Node_Id; Val : Node_Id); -- Node4
8320 procedure Set_Real_Range_Specification
8321 (N : Node_Id; Val : Node_Id); -- Node4
8323 procedure Set_Realval
8324 (N : Node_Id; Val : Ureal); -- Ureal3
8326 procedure Set_Reason
8327 (N : Node_Id; Val : Uint); -- Uint3
8329 procedure Set_Record_Extension_Part
8330 (N : Node_Id; Val : Node_Id); -- Node3
8332 procedure Set_Redundant_Use
8333 (N : Node_Id; Val : Boolean := True); -- Flag13
8335 procedure Set_Return_Type
8336 (N : Node_Id; Val : Node_Id); -- Node2
8338 procedure Set_Reverse_Present
8339 (N : Node_Id; Val : Boolean := True); -- Flag15
8341 procedure Set_Right_Opnd
8342 (N : Node_Id; Val : Node_Id); -- Node3
8344 procedure Set_Rounded_Result
8345 (N : Node_Id; Val : Boolean := True); -- Flag18
8348 (N : Node_Id; Val : Node_Id); -- Node3
8350 procedure Set_Select_Alternatives
8351 (N : Node_Id; Val : List_Id); -- List1
8353 procedure Set_Selector_Name
8354 (N : Node_Id; Val : Node_Id); -- Node2
8356 procedure Set_Selector_Names
8357 (N : Node_Id; Val : List_Id); -- List1
8359 procedure Set_Shift_Count_OK
8360 (N : Node_Id; Val : Boolean := True); -- Flag4
8362 procedure Set_Source_Type
8363 (N : Node_Id; Val : Entity_Id); -- Node1
8365 procedure Set_Specification
8366 (N : Node_Id; Val : Node_Id); -- Node1
8368 procedure Set_Statements
8369 (N : Node_Id; Val : List_Id); -- List3
8371 procedure Set_Static_Processing_OK
8372 (N : Node_Id; Val : Boolean); -- Flag4
8374 procedure Set_Storage_Pool
8375 (N : Node_Id; Val : Node_Id); -- Node1
8377 procedure Set_Strval
8378 (N : Node_Id; Val : String_Id); -- Str3
8380 procedure Set_Subtype_Indication
8381 (N : Node_Id; Val : Node_Id); -- Node5
8383 procedure Set_Subtype_Mark
8384 (N : Node_Id; Val : Node_Id); -- Node4
8386 procedure Set_Subtype_Marks
8387 (N : Node_Id; Val : List_Id); -- List2
8389 procedure Set_Tagged_Present
8390 (N : Node_Id; Val : Boolean := True); -- Flag15
8392 procedure Set_Target_Type
8393 (N : Node_Id; Val : Entity_Id); -- Node2
8395 procedure Set_Task_Body_Procedure
8396 (N : Node_Id; Val : Entity_Id); -- Node2
8398 procedure Set_Task_Definition
8399 (N : Node_Id; Val : Node_Id); -- Node3
8401 procedure Set_Then_Actions
8402 (N : Node_Id; Val : List_Id); -- List2
8404 procedure Set_Then_Statements
8405 (N : Node_Id; Val : List_Id); -- List2
8407 procedure Set_Treat_Fixed_As_Integer
8408 (N : Node_Id; Val : Boolean := True); -- Flag14
8410 procedure Set_Triggering_Alternative
8411 (N : Node_Id; Val : Node_Id); -- Node1
8413 procedure Set_Triggering_Statement
8414 (N : Node_Id; Val : Node_Id); -- Node1
8416 procedure Set_TSS_Elist
8417 (N : Node_Id; Val : Elist_Id); -- Elist3
8419 procedure Set_Type_Definition
8420 (N : Node_Id; Val : Node_Id); -- Node3
8423 (N : Node_Id; Val : Node_Id); -- Node2
8425 procedure Set_Unknown_Discriminants_Present
8426 (N : Node_Id; Val : Boolean := True); -- Flag13
8428 procedure Set_Unreferenced_In_Spec
8429 (N : Node_Id; Val : Boolean := True); -- Flag7
8431 procedure Set_Variant_Part
8432 (N : Node_Id; Val : Node_Id); -- Node4
8434 procedure Set_Variants
8435 (N : Node_Id; Val : List_Id); -- List1
8437 procedure Set_Visible_Declarations
8438 (N : Node_Id; Val : List_Id); -- List2
8440 procedure Set_Was_Originally_Stub
8441 (N : Node_Id; Val : Boolean := True); -- Flag13
8443 procedure Set_Zero_Cost_Handling
8444 (N : Node_Id; Val : Boolean := True); -- Flag5
8446 -------------------------
8447 -- Iterator Procedures --
8448 -------------------------
8450 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
8452 procedure Next_Entity (N : in out Node_Id);
8453 procedure Next_Named_Actual (N : in out Node_Id);
8454 procedure Next_Rep_Item (N : in out Node_Id);
8455 procedure Next_Use_Clause (N : in out Node_Id);
8457 --------------------------------------
8458 -- Logical Access to End_Span Field --
8459 --------------------------------------
8461 function End_Location (N : Node_Id) return Source_Ptr;
8462 -- N is an N_If_Statement or N_Case_Statement node, and this
8463 -- function returns the location of the IF token in the END IF
8464 -- sequence by translating the value of the End_Span field.
8466 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
8467 -- N is an N_If_Statement or N_Case_Statement node. This procedure
8468 -- sets the End_Span field to correspond to the given value S. In
8469 -- other words, End_Span is set to the difference between S and
8470 -- Sloc (N), the starting location.
8472 --------------------
8473 -- Inline Pragmas --
8474 --------------------
8476 pragma Inline (ABE_Is_Certain);
8477 pragma Inline (Abort_Present);
8478 pragma Inline (Abortable_Part);
8479 pragma Inline (Abstract_Present);
8480 pragma Inline (Accept_Handler_Records);
8481 pragma Inline (Accept_Statement);
8482 pragma Inline (Access_Definition);
8483 pragma Inline (Access_Types_To_Process);
8484 pragma Inline (Actions);
8485 pragma Inline (Activation_Chain_Entity);
8486 pragma Inline (Acts_As_Spec);
8487 pragma Inline (Aggregate_Bounds);
8488 pragma Inline (Aliased_Present);
8489 pragma Inline (All_Others);
8490 pragma Inline (All_Present);
8491 pragma Inline (Alternatives);
8492 pragma Inline (Ancestor_Part);
8493 pragma Inline (Array_Aggregate);
8494 pragma Inline (Assignment_OK);
8495 pragma Inline (Associated_Node);
8496 pragma Inline (At_End_Proc);
8497 pragma Inline (Attribute_Name);
8498 pragma Inline (Aux_Decls_Node);
8499 pragma Inline (Backwards_OK);
8500 pragma Inline (Bad_Is_Detected);
8501 pragma Inline (Body_To_Inline);
8502 pragma Inline (Body_Required);
8503 pragma Inline (By_Ref);
8504 pragma Inline (Box_Present);
8505 pragma Inline (Char_Literal_Value);
8506 pragma Inline (Chars);
8507 pragma Inline (Check_Address_Alignment);
8508 pragma Inline (Choice_Parameter);
8509 pragma Inline (Choices);
8510 pragma Inline (Compile_Time_Known_Aggregate);
8511 pragma Inline (Component_Associations);
8512 pragma Inline (Component_Clauses);
8513 pragma Inline (Component_Definition);
8514 pragma Inline (Component_Items);
8515 pragma Inline (Component_List);
8516 pragma Inline (Component_Name);
8517 pragma Inline (Condition);
8518 pragma Inline (Condition_Actions);
8519 pragma Inline (Config_Pragmas);
8520 pragma Inline (Constant_Present);
8521 pragma Inline (Constraint);
8522 pragma Inline (Constraints);
8523 pragma Inline (Context_Installed);
8524 pragma Inline (Context_Items);
8525 pragma Inline (Controlling_Argument);
8526 pragma Inline (Conversion_OK);
8527 pragma Inline (Corresponding_Body);
8528 pragma Inline (Corresponding_Generic_Association);
8529 pragma Inline (Corresponding_Integer_Value);
8530 pragma Inline (Corresponding_Spec);
8531 pragma Inline (Corresponding_Stub);
8532 pragma Inline (Dcheck_Function);
8533 pragma Inline (Debug_Statement);
8534 pragma Inline (Declarations);
8535 pragma Inline (Default_Expression);
8536 pragma Inline (Default_Name);
8537 pragma Inline (Defining_Identifier);
8538 pragma Inline (Defining_Unit_Name);
8539 pragma Inline (Delay_Alternative);
8540 pragma Inline (Delay_Finalize_Attach);
8541 pragma Inline (Delay_Statement);
8542 pragma Inline (Delta_Expression);
8543 pragma Inline (Digits_Expression);
8544 pragma Inline (Discr_Check_Funcs_Built);
8545 pragma Inline (Discrete_Choices);
8546 pragma Inline (Discrete_Range);
8547 pragma Inline (Discrete_Subtype_Definition);
8548 pragma Inline (Discrete_Subtype_Definitions);
8549 pragma Inline (Discriminant_Specifications);
8550 pragma Inline (Discriminant_Type);
8551 pragma Inline (Do_Accessibility_Check);
8552 pragma Inline (Do_Discriminant_Check);
8553 pragma Inline (Do_Length_Check);
8554 pragma Inline (Do_Division_Check);
8555 pragma Inline (Do_Overflow_Check);
8556 pragma Inline (Do_Range_Check);
8557 pragma Inline (Do_Storage_Check);
8558 pragma Inline (Do_Tag_Check);
8559 pragma Inline (Elaborate_Present);
8560 pragma Inline (Elaborate_All_Present);
8561 pragma Inline (Elaboration_Boolean);
8562 pragma Inline (Else_Actions);
8563 pragma Inline (Else_Statements);
8564 pragma Inline (Elsif_Parts);
8565 pragma Inline (Enclosing_Variant);
8566 pragma Inline (End_Label);
8567 pragma Inline (End_Span);
8568 pragma Inline (Entity);
8569 pragma Inline (Entity_Or_Associated_Node);
8570 pragma Inline (Entry_Body_Formal_Part);
8571 pragma Inline (Entry_Call_Alternative);
8572 pragma Inline (Entry_Call_Statement);
8573 pragma Inline (Entry_Direct_Name);
8574 pragma Inline (Entry_Index);
8575 pragma Inline (Entry_Index_Specification);
8576 pragma Inline (Etype);
8577 pragma Inline (Exception_Choices);
8578 pragma Inline (Exception_Junk);
8579 pragma Inline (Exception_Handlers);
8580 pragma Inline (Expansion_Delayed);
8581 pragma Inline (Explicit_Actual_Parameter);
8582 pragma Inline (Explicit_Generic_Actual_Parameter);
8583 pragma Inline (Expression);
8584 pragma Inline (Expressions);
8585 pragma Inline (First_Bit);
8586 pragma Inline (First_Inlined_Subprogram);
8587 pragma Inline (First_Name);
8588 pragma Inline (First_Named_Actual);
8589 pragma Inline (First_Real_Statement);
8590 pragma Inline (First_Subtype_Link);
8591 pragma Inline (Float_Truncate);
8592 pragma Inline (Formal_Type_Definition);
8593 pragma Inline (Forwards_OK);
8594 pragma Inline (From_At_Mod);
8595 pragma Inline (From_Default);
8596 pragma Inline (Generic_Associations);
8597 pragma Inline (Generic_Formal_Declarations);
8598 pragma Inline (Generic_Parent);
8599 pragma Inline (Generic_Parent_Type);
8600 pragma Inline (Handled_Statement_Sequence);
8601 pragma Inline (Handler_List_Entry);
8602 pragma Inline (Has_Created_Identifier);
8603 pragma Inline (Has_Dynamic_Length_Check);
8604 pragma Inline (Has_Dynamic_Range_Check);
8605 pragma Inline (Has_No_Elaboration_Code);
8606 pragma Inline (Has_Priority_Pragma);
8607 pragma Inline (Has_Private_View);
8608 pragma Inline (Has_Storage_Size_Pragma);
8609 pragma Inline (Has_Task_Info_Pragma);
8610 pragma Inline (Has_Task_Name_Pragma);
8611 pragma Inline (Has_Wide_Character);
8612 pragma Inline (Hidden_By_Use_Clause);
8613 pragma Inline (High_Bound);
8614 pragma Inline (Identifier);
8615 pragma Inline (Implicit_With);
8616 pragma Inline (Includes_Infinities);
8617 pragma Inline (In_Present);
8618 pragma Inline (Instance_Spec);
8619 pragma Inline (Intval);
8620 pragma Inline (Is_Asynchronous_Call_Block);
8621 pragma Inline (Is_Component_Left_Opnd);
8622 pragma Inline (Is_Component_Right_Opnd);
8623 pragma Inline (Is_Controlling_Actual);
8624 pragma Inline (Is_In_Discriminant_Check);
8625 pragma Inline (Is_Machine_Number);
8626 pragma Inline (Is_Null_Loop);
8627 pragma Inline (Is_Overloaded);
8628 pragma Inline (Is_Power_Of_2_For_Shift);
8629 pragma Inline (Is_Protected_Subprogram_Body);
8630 pragma Inline (Is_Static_Expression);
8631 pragma Inline (Is_Subprogram_Descriptor);
8632 pragma Inline (Is_Task_Allocation_Block);
8633 pragma Inline (Is_Task_Master);
8634 pragma Inline (Iteration_Scheme);
8635 pragma Inline (Itype);
8636 pragma Inline (Kill_Range_Check);
8637 pragma Inline (Last_Bit);
8638 pragma Inline (Last_Name);
8639 pragma Inline (Library_Unit);
8640 pragma Inline (Label_Construct);
8641 pragma Inline (Left_Opnd);
8642 pragma Inline (Limited_View_Installed);
8643 pragma Inline (Limited_Present);
8644 pragma Inline (Literals);
8645 pragma Inline (Loop_Actions);
8646 pragma Inline (Loop_Parameter_Specification);
8647 pragma Inline (Low_Bound);
8648 pragma Inline (Mod_Clause);
8649 pragma Inline (More_Ids);
8650 pragma Inline (Must_Be_Byte_Aligned);
8651 pragma Inline (Must_Not_Freeze);
8652 pragma Inline (Name);
8653 pragma Inline (Names);
8654 pragma Inline (Next_Entity);
8655 pragma Inline (Next_Named_Actual);
8656 pragma Inline (Next_Rep_Item);
8657 pragma Inline (Next_Use_Clause);
8658 pragma Inline (No_Ctrl_Actions);
8659 pragma Inline (No_Elaboration_Check);
8660 pragma Inline (No_Entities_Ref_In_Spec);
8661 pragma Inline (No_Initialization);
8662 pragma Inline (No_Truncation);
8663 pragma Inline (Null_Present);
8664 pragma Inline (Null_Record_Present);
8665 pragma Inline (Object_Definition);
8666 pragma Inline (OK_For_Stream);
8667 pragma Inline (Original_Discriminant);
8668 pragma Inline (Original_Entity);
8669 pragma Inline (Others_Discrete_Choices);
8670 pragma Inline (Out_Present);
8671 pragma Inline (Parameter_Associations);
8672 pragma Inline (Parameter_Specifications);
8673 pragma Inline (Parameter_List_Truncated);
8674 pragma Inline (Parameter_Type);
8675 pragma Inline (Parent_Spec);
8676 pragma Inline (Position);
8677 pragma Inline (Pragma_Argument_Associations);
8678 pragma Inline (Pragmas_After);
8679 pragma Inline (Pragmas_Before);
8680 pragma Inline (Prefix);
8681 pragma Inline (Present_Expr);
8682 pragma Inline (Prev_Ids);
8683 pragma Inline (Print_In_Hex);
8684 pragma Inline (Private_Declarations);
8685 pragma Inline (Private_Present);
8686 pragma Inline (Procedure_To_Call);
8687 pragma Inline (Proper_Body);
8688 pragma Inline (Protected_Definition);
8689 pragma Inline (Protected_Present);
8690 pragma Inline (Raises_Constraint_Error);
8691 pragma Inline (Range_Constraint);
8692 pragma Inline (Range_Expression);
8693 pragma Inline (Real_Range_Specification);
8694 pragma Inline (Realval);
8695 pragma Inline (Reason);
8696 pragma Inline (Record_Extension_Part);
8697 pragma Inline (Redundant_Use);
8698 pragma Inline (Return_Type);
8699 pragma Inline (Reverse_Present);
8700 pragma Inline (Right_Opnd);
8701 pragma Inline (Rounded_Result);
8702 pragma Inline (Scope);
8703 pragma Inline (Select_Alternatives);
8704 pragma Inline (Selector_Name);
8705 pragma Inline (Selector_Names);
8706 pragma Inline (Shift_Count_OK);
8707 pragma Inline (Source_Type);
8708 pragma Inline (Specification);
8709 pragma Inline (Statements);
8710 pragma Inline (Static_Processing_OK);
8711 pragma Inline (Storage_Pool);
8712 pragma Inline (Strval);
8713 pragma Inline (Subtype_Indication);
8714 pragma Inline (Subtype_Mark);
8715 pragma Inline (Subtype_Marks);
8716 pragma Inline (Tagged_Present);
8717 pragma Inline (Target_Type);
8718 pragma Inline (Task_Body_Procedure);
8719 pragma Inline (Task_Definition);
8720 pragma Inline (Then_Actions);
8721 pragma Inline (Then_Statements);
8722 pragma Inline (Triggering_Alternative);
8723 pragma Inline (Triggering_Statement);
8724 pragma Inline (Treat_Fixed_As_Integer);
8725 pragma Inline (TSS_Elist);
8726 pragma Inline (Type_Definition);
8727 pragma Inline (Unit);
8728 pragma Inline (Unknown_Discriminants_Present);
8729 pragma Inline (Unreferenced_In_Spec);
8730 pragma Inline (Variant_Part);
8731 pragma Inline (Variants);
8732 pragma Inline (Visible_Declarations);
8733 pragma Inline (Was_Originally_Stub);
8734 pragma Inline (Zero_Cost_Handling);
8736 pragma Inline (Set_ABE_Is_Certain);
8737 pragma Inline (Set_Abort_Present);
8738 pragma Inline (Set_Abortable_Part);
8739 pragma Inline (Set_Abstract_Present);
8740 pragma Inline (Set_Accept_Handler_Records);
8741 pragma Inline (Set_Accept_Statement);
8742 pragma Inline (Set_Access_Definition);
8743 pragma Inline (Set_Access_Types_To_Process);
8744 pragma Inline (Set_Actions);
8745 pragma Inline (Set_Activation_Chain_Entity);
8746 pragma Inline (Set_Acts_As_Spec);
8747 pragma Inline (Set_Aggregate_Bounds);
8748 pragma Inline (Set_Aliased_Present);
8749 pragma Inline (Set_All_Others);
8750 pragma Inline (Set_All_Present);
8751 pragma Inline (Set_Alternatives);
8752 pragma Inline (Set_Ancestor_Part);
8753 pragma Inline (Set_Array_Aggregate);
8754 pragma Inline (Set_Assignment_OK);
8755 pragma Inline (Set_Associated_Node);
8756 pragma Inline (Set_At_End_Proc);
8757 pragma Inline (Set_Attribute_Name);
8758 pragma Inline (Set_Aux_Decls_Node);
8759 pragma Inline (Set_Backwards_OK);
8760 pragma Inline (Set_Bad_Is_Detected);
8761 pragma Inline (Set_Body_To_Inline);
8762 pragma Inline (Set_Body_Required);
8763 pragma Inline (Set_By_Ref);
8764 pragma Inline (Set_Box_Present);
8765 pragma Inline (Set_Char_Literal_Value);
8766 pragma Inline (Set_Chars);
8767 pragma Inline (Set_Check_Address_Alignment);
8768 pragma Inline (Set_Choice_Parameter);
8769 pragma Inline (Set_Choices);
8770 pragma Inline (Set_Compile_Time_Known_Aggregate);
8771 pragma Inline (Set_Component_Associations);
8772 pragma Inline (Set_Component_Clauses);
8773 pragma Inline (Set_Component_Definition);
8774 pragma Inline (Set_Component_Items);
8775 pragma Inline (Set_Component_List);
8776 pragma Inline (Set_Component_Name);
8777 pragma Inline (Set_Condition);
8778 pragma Inline (Set_Condition_Actions);
8779 pragma Inline (Set_Config_Pragmas);
8780 pragma Inline (Set_Constant_Present);
8781 pragma Inline (Set_Constraint);
8782 pragma Inline (Set_Constraints);
8783 pragma Inline (Set_Context_Installed);
8784 pragma Inline (Set_Context_Items);
8785 pragma Inline (Set_Controlling_Argument);
8786 pragma Inline (Set_Conversion_OK);
8787 pragma Inline (Set_Corresponding_Body);
8788 pragma Inline (Set_Corresponding_Generic_Association);
8789 pragma Inline (Set_Corresponding_Integer_Value);
8790 pragma Inline (Set_Corresponding_Spec);
8791 pragma Inline (Set_Corresponding_Stub);
8792 pragma Inline (Set_Dcheck_Function);
8793 pragma Inline (Set_Debug_Statement);
8794 pragma Inline (Set_Declarations);
8795 pragma Inline (Set_Default_Expression);
8796 pragma Inline (Set_Default_Name);
8797 pragma Inline (Set_Defining_Identifier);
8798 pragma Inline (Set_Defining_Unit_Name);
8799 pragma Inline (Set_Delay_Alternative);
8800 pragma Inline (Set_Delay_Finalize_Attach);
8801 pragma Inline (Set_Delay_Statement);
8802 pragma Inline (Set_Delta_Expression);
8803 pragma Inline (Set_Digits_Expression);
8804 pragma Inline (Set_Discr_Check_Funcs_Built);
8805 pragma Inline (Set_Discrete_Choices);
8806 pragma Inline (Set_Discrete_Range);
8807 pragma Inline (Set_Discrete_Subtype_Definition);
8808 pragma Inline (Set_Discrete_Subtype_Definitions);
8809 pragma Inline (Set_Discriminant_Specifications);
8810 pragma Inline (Set_Discriminant_Type);
8811 pragma Inline (Set_Do_Accessibility_Check);
8812 pragma Inline (Set_Do_Discriminant_Check);
8813 pragma Inline (Set_Do_Length_Check);
8814 pragma Inline (Set_Do_Division_Check);
8815 pragma Inline (Set_Do_Overflow_Check);
8816 pragma Inline (Set_Do_Range_Check);
8817 pragma Inline (Set_Do_Storage_Check);
8818 pragma Inline (Set_Do_Tag_Check);
8819 pragma Inline (Set_Elaborate_Present);
8820 pragma Inline (Set_Elaborate_All_Present);
8821 pragma Inline (Set_Elaboration_Boolean);
8822 pragma Inline (Set_Else_Actions);
8823 pragma Inline (Set_Else_Statements);
8824 pragma Inline (Set_Elsif_Parts);
8825 pragma Inline (Set_Enclosing_Variant);
8826 pragma Inline (Set_End_Label);
8827 pragma Inline (Set_End_Span);
8828 pragma Inline (Set_Entity);
8829 pragma Inline (Set_Entry_Body_Formal_Part);
8830 pragma Inline (Set_Entry_Call_Alternative);
8831 pragma Inline (Set_Entry_Call_Statement);
8832 pragma Inline (Set_Entry_Direct_Name);
8833 pragma Inline (Set_Entry_Index);
8834 pragma Inline (Set_Entry_Index_Specification);
8835 pragma Inline (Set_Etype);
8836 pragma Inline (Set_Exception_Choices);
8837 pragma Inline (Set_Exception_Junk);
8838 pragma Inline (Set_Exception_Handlers);
8839 pragma Inline (Set_Expansion_Delayed);
8840 pragma Inline (Set_Explicit_Actual_Parameter);
8841 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
8842 pragma Inline (Set_Expression);
8843 pragma Inline (Set_Expressions);
8844 pragma Inline (Set_First_Bit);
8845 pragma Inline (Set_First_Inlined_Subprogram);
8846 pragma Inline (Set_First_Name);
8847 pragma Inline (Set_First_Named_Actual);
8848 pragma Inline (Set_First_Real_Statement);
8849 pragma Inline (Set_First_Subtype_Link);
8850 pragma Inline (Set_Float_Truncate);
8851 pragma Inline (Set_Formal_Type_Definition);
8852 pragma Inline (Set_Forwards_OK);
8853 pragma Inline (Set_From_At_Mod);
8854 pragma Inline (Set_From_Default);
8855 pragma Inline (Set_Generic_Associations);
8856 pragma Inline (Set_Generic_Formal_Declarations);
8857 pragma Inline (Set_Generic_Parent);
8858 pragma Inline (Set_Generic_Parent_Type);
8859 pragma Inline (Set_Handled_Statement_Sequence);
8860 pragma Inline (Set_Handler_List_Entry);
8861 pragma Inline (Set_Has_Created_Identifier);
8862 pragma Inline (Set_Has_Dynamic_Length_Check);
8863 pragma Inline (Set_Has_Dynamic_Range_Check);
8864 pragma Inline (Set_Has_No_Elaboration_Code);
8865 pragma Inline (Set_Has_Priority_Pragma);
8866 pragma Inline (Set_Has_Private_View);
8867 pragma Inline (Set_Has_Storage_Size_Pragma);
8868 pragma Inline (Set_Has_Task_Info_Pragma);
8869 pragma Inline (Set_Has_Task_Name_Pragma);
8870 pragma Inline (Set_Has_Wide_Character);
8871 pragma Inline (Set_Hidden_By_Use_Clause);
8872 pragma Inline (Set_High_Bound);
8873 pragma Inline (Set_Identifier);
8874 pragma Inline (Set_Implicit_With);
8875 pragma Inline (Set_Includes_Infinities);
8876 pragma Inline (Set_In_Present);
8877 pragma Inline (Set_Instance_Spec);
8878 pragma Inline (Set_Intval);
8879 pragma Inline (Set_Is_Asynchronous_Call_Block);
8880 pragma Inline (Set_Is_Component_Left_Opnd);
8881 pragma Inline (Set_Is_Component_Right_Opnd);
8882 pragma Inline (Set_Is_Controlling_Actual);
8883 pragma Inline (Set_Is_In_Discriminant_Check);
8884 pragma Inline (Set_Is_Machine_Number);
8885 pragma Inline (Set_Is_Null_Loop);
8886 pragma Inline (Set_Is_Overloaded);
8887 pragma Inline (Set_Is_Power_Of_2_For_Shift);
8888 pragma Inline (Set_Is_Protected_Subprogram_Body);
8889 pragma Inline (Set_Is_Static_Expression);
8890 pragma Inline (Set_Is_Subprogram_Descriptor);
8891 pragma Inline (Set_Is_Task_Allocation_Block);
8892 pragma Inline (Set_Is_Task_Master);
8893 pragma Inline (Set_Iteration_Scheme);
8894 pragma Inline (Set_Itype);
8895 pragma Inline (Set_Kill_Range_Check);
8896 pragma Inline (Set_Last_Bit);
8897 pragma Inline (Set_Last_Name);
8898 pragma Inline (Set_Library_Unit);
8899 pragma Inline (Set_Label_Construct);
8900 pragma Inline (Set_Left_Opnd);
8901 pragma Inline (Set_Limited_View_Installed);
8902 pragma Inline (Set_Limited_Present);
8903 pragma Inline (Set_Literals);
8904 pragma Inline (Set_Loop_Actions);
8905 pragma Inline (Set_Loop_Parameter_Specification);
8906 pragma Inline (Set_Low_Bound);
8907 pragma Inline (Set_Mod_Clause);
8908 pragma Inline (Set_More_Ids);
8909 pragma Inline (Set_Must_Be_Byte_Aligned);
8910 pragma Inline (Set_Must_Not_Freeze);
8911 pragma Inline (Set_Name);
8912 pragma Inline (Set_Names);
8913 pragma Inline (Set_Next_Entity);
8914 pragma Inline (Set_Next_Named_Actual);
8915 pragma Inline (Set_Next_Use_Clause);
8916 pragma Inline (Set_No_Ctrl_Actions);
8917 pragma Inline (Set_No_Elaboration_Check);
8918 pragma Inline (Set_No_Entities_Ref_In_Spec);
8919 pragma Inline (Set_No_Initialization);
8920 pragma Inline (Set_No_Truncation);
8921 pragma Inline (Set_Null_Present);
8922 pragma Inline (Set_Null_Record_Present);
8923 pragma Inline (Set_Object_Definition);
8924 pragma Inline (Set_OK_For_Stream);
8925 pragma Inline (Set_Original_Discriminant);
8926 pragma Inline (Set_Original_Entity);
8927 pragma Inline (Set_Others_Discrete_Choices);
8928 pragma Inline (Set_Out_Present);
8929 pragma Inline (Set_Parameter_Associations);
8930 pragma Inline (Set_Parameter_Specifications);
8931 pragma Inline (Set_Parameter_List_Truncated);
8932 pragma Inline (Set_Parameter_Type);
8933 pragma Inline (Set_Parent_Spec);
8934 pragma Inline (Set_Position);
8935 pragma Inline (Set_Pragma_Argument_Associations);
8936 pragma Inline (Set_Pragmas_After);
8937 pragma Inline (Set_Pragmas_Before);
8938 pragma Inline (Set_Prefix);
8939 pragma Inline (Set_Present_Expr);
8940 pragma Inline (Set_Prev_Ids);
8941 pragma Inline (Set_Print_In_Hex);
8942 pragma Inline (Set_Private_Declarations);
8943 pragma Inline (Set_Private_Present);
8944 pragma Inline (Set_Procedure_To_Call);
8945 pragma Inline (Set_Proper_Body);
8946 pragma Inline (Set_Protected_Definition);
8947 pragma Inline (Set_Protected_Present);
8948 pragma Inline (Set_Raises_Constraint_Error);
8949 pragma Inline (Set_Range_Constraint);
8950 pragma Inline (Set_Range_Expression);
8951 pragma Inline (Set_Real_Range_Specification);
8952 pragma Inline (Set_Realval);
8953 pragma Inline (Set_Reason);
8954 pragma Inline (Set_Record_Extension_Part);
8955 pragma Inline (Set_Redundant_Use);
8956 pragma Inline (Set_Return_Type);
8957 pragma Inline (Set_Reverse_Present);
8958 pragma Inline (Set_Right_Opnd);
8959 pragma Inline (Set_Rounded_Result);
8960 pragma Inline (Set_Scope);
8961 pragma Inline (Set_Select_Alternatives);
8962 pragma Inline (Set_Selector_Name);
8963 pragma Inline (Set_Selector_Names);
8964 pragma Inline (Set_Shift_Count_OK);
8965 pragma Inline (Set_Source_Type);
8966 pragma Inline (Set_Specification);
8967 pragma Inline (Set_Statements);
8968 pragma Inline (Set_Static_Processing_OK);
8969 pragma Inline (Set_Storage_Pool);
8970 pragma Inline (Set_Strval);
8971 pragma Inline (Set_Subtype_Indication);
8972 pragma Inline (Set_Subtype_Mark);
8973 pragma Inline (Set_Subtype_Marks);
8974 pragma Inline (Set_Tagged_Present);
8975 pragma Inline (Set_Target_Type);
8976 pragma Inline (Set_Task_Body_Procedure);
8977 pragma Inline (Set_Task_Definition);
8978 pragma Inline (Set_Then_Actions);
8979 pragma Inline (Set_Then_Statements);
8980 pragma Inline (Set_Triggering_Alternative);
8981 pragma Inline (Set_Triggering_Statement);
8982 pragma Inline (Set_Treat_Fixed_As_Integer);
8983 pragma Inline (Set_TSS_Elist);
8984 pragma Inline (Set_Type_Definition);
8985 pragma Inline (Set_Unit);
8986 pragma Inline (Set_Unknown_Discriminants_Present);
8987 pragma Inline (Set_Unreferenced_In_Spec);
8988 pragma Inline (Set_Variant_Part);
8989 pragma Inline (Set_Variants);
8990 pragma Inline (Set_Visible_Declarations);
8991 pragma Inline (Set_Was_Originally_Stub);
8992 pragma Inline (Set_Zero_Cost_Handling);