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 (Flag15-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 Asasociated_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 -- Generic_Parent (Node5-Sem)
972 -- Generic_parent is defined on declaration nodes that are instances.
973 -- The value of Generic_Parent is the generic entity from which the
974 -- instance is obtained. Generic_Parent is also defined for the renaming
975 -- declarations and object declarations created for the actuals in an
976 -- instantiation. The generic parent of such a declaration is the
977 -- corresponding generic association in the Instantiation node.
979 -- Generic_Parent_Type (Node4-Sem)
980 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for
981 -- the actuals of formal private and derived types. Within the instance,
982 -- the operations on the actual are those inherited from the parent.
983 -- For a formal private type, the parent type is the generic type
984 -- itself. The Generic_Parent_Type is also used in an instance to
985 -- determine whether a private operation overrides an inherited one.
987 -- Handler_List_Entry (Node2-Sem)
988 -- This field is present in N_Object_Declaration nodes. It is set only
989 -- for the Handler_Record entry generated for an exception in zero cost
990 -- exception handling mode. It references the corresponding item in the
991 -- handler list, and is used to delete this entry if the corresponding
992 -- handler is deleted during optimization. For further details on why
993 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
995 -- Has_Dynamic_Length_Check (Flag10-Sem)
996 -- This flag is present on all nodes. It is set to indicate that one
997 -- of the routines in unit Checks has generated a length check action
998 -- which has been inserted at the flagged node. This is used to avoid
999 -- the generation of duplicate checks.
1001 -- Has_Dynamic_Range_Check (Flag12-Sem)
1002 -- This flag is present on all nodes. It is set to indicate that one
1003 -- of the routines in unit Checks has generated a range check action
1004 -- which has been inserted at the flagged node. This is used to avoid
1005 -- the generation of duplicate checks.
1007 -- Has_No_Elaboration_Code (Flag17-Sem)
1008 -- A flag that appears in the N_Compilation_Unit node to indicate
1009 -- whether or not elaboration code is present for this unit. It is
1010 -- initially set true for subprogram specs and bodies and for all
1011 -- generic units and false for non-generic package specs and bodies.
1012 -- Gigi may set the flag in the non-generic package case if it
1013 -- determines that no elaboration code is generated. Note that this
1014 -- flag is not related to the Is_Preelaborated status, there can be
1015 -- preelaborated packages that generate elaboration code, and non-
1016 -- preelaborated packages which do not generate elaboration code.
1018 -- Has_Priority_Pragma (Flag6-Sem)
1019 -- A flag present in N_Subprogram_Body, N_Task_Definition and
1020 -- N_Protected_Definition nodes to flag the presence of either
1021 -- a Priority or Interrupt_Priority pragma in the declaration
1022 -- sequence (public or private in the task and protected cases)
1024 -- Has_Private_View (Flag11-Sem)
1025 -- A flag present in generic nodes that have an entity, to indicate
1026 -- that the node has a private type. Used to exchange private
1027 -- and full declarations if the visibility at instantiation is
1028 -- different from the visibility at generic definition.
1030 -- Has_Storage_Size_Pragma (Flag5-Sem)
1031 -- A flag present in an N_Task_Definition node to flag the presence
1032 -- of a Storage_Size pragma
1034 -- Has_Task_Info_Pragma (Flag7-Sem)
1035 -- A flag present in an N_Task_Definition node to flag the presence
1036 -- of a Task_Info pragma. Used to detect duplicate pragmas.
1038 -- Has_Task_Name_Pragma (Flag8-Sem)
1039 -- A flag present in N_Task_Definition nodes to flag the presence
1040 -- of a Task_Name pragma in the declaration sequence for the task.
1042 -- Has_Wide_Character (Flag11-Sem)
1043 -- Present in string literals, set if any wide character (i.e. a
1044 -- character code outside the Character range) appears in the string.
1046 -- Hidden_By_Use_Clause (Elist4-Sem)
1047 -- An entity list present in use clauses that appear within
1048 -- instantiations. For the resolution of local entities, entities
1049 -- introduced by these use clauses have priority over global ones,
1050 -- and outer entities must be explicitly hidden/restored on exit.
1052 -- Implicit_With (Flag16-Sem)
1053 -- This flag is set in the N_With_Clause node that is implicitly
1054 -- generated for runtime units that are loaded by the expander, and
1055 -- also for package System, if it is loaded implicitly by a use of
1056 -- the 'Address or 'Tag attribute
1058 -- Includes_Infinities (Flag11-Sem)
1059 -- This flag is present in N_Range nodes. It is set for the range
1060 -- of unconstrained float types defined in Standard, which include
1061 -- not only the given range of values, but also legtitimately can
1062 -- include infinite values. This flag is false for any float type
1063 -- for which an explicit range is given by the programmer, even if
1064 -- that range is identical to the range for float.
1066 -- Instance_Spec (Node5-Sem)
1067 -- This field is present in generic instantiation nodes, and also in
1068 -- formal package declaration nodes (formal package declarations are
1069 -- treated in a manner very similar to package instantiations). It
1070 -- points to the node for the spec of the instance, inserted as part
1071 -- of the semantic processing for instantiations in Sem_Ch12.
1073 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1074 -- A flag set in a Block_Statement node to indicate that it is the
1075 -- expansion of an asynchronous entry call. Such a block needs a
1076 -- cleanup handler to assure that the call is cancelled.
1078 -- Is_Component_Left_Opnd (Flag13-Sem)
1079 -- Is_Component_Right_Opnd (Flag14-Sem)
1080 -- Present in concatenation nodes, to indicate that the corresponding
1081 -- operand is of the component type of the result. Used in resolving
1082 -- concatenation nodes in instances.
1084 -- Is_Controlling_Actual (Flag16-Sem)
1085 -- This flag is set on in an expression that is a controlling argument
1086 -- in a dispatching call. It is off in all other cases. See Sem_Disp
1087 -- for details of its use.
1089 -- Is_In_Discriminant_Check (Flag11-Sem)
1090 -- This flag is present in a selected component, and is used to
1091 -- indicate that the reference occurs within a discriminant check.
1092 -- The significance is that optimizations based on assuming that
1093 -- the discriminant check has a correct value cannot be performed
1094 -- in this case (or the disriminant check may be optimized away!)
1096 -- Is_Machine_Number (Flag11-Sem)
1097 -- This flag is set in an N_Real_Literal node to indicate that the
1098 -- value is a machine number. This avoids some unnecessary cases
1099 -- of converting real literals to machine numbers.
1101 -- Is_Null_Loop (Flag16-Sem)
1102 -- This flag is set in an N_Loop_Statement node if the corresponding
1103 -- loop can be determined to be null at compile time. This is used to
1104 -- suppress any warnings that would otherwise be issued inside the
1105 -- loop since they are probably not useful.
1107 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1108 -- A flag present only in N_Op_Expon nodes. It is set when the
1109 -- exponentiation is of the forma 2 ** N, where the type of N is
1110 -- an unsigned integral subtype whose size does not exceed the size
1111 -- of Standard_Integer (i.e. a type that can be safely converted to
1112 -- Natural), and the exponentiation appears as the right operand of
1113 -- an integer multiplication or an integer division where the dividend
1114 -- is unsigned. It is also required that overflow checking is off for
1115 -- both the exponentiation and the multiply/divide node. If this set
1116 -- of conditions holds, and the flag is set, then the division or
1117 -- multiplication can be (and is) converted to a shift.
1119 -- Is_Overloaded (Flag5-Sem)
1120 -- A flag present in all expression nodes. Used temporarily during
1121 -- overloading determination. The setting of this flag is not
1122 -- relevant once overloading analysis is complete.
1124 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1125 -- A flag set in a Subprogram_Body block to indicate that it is the
1126 -- implemenation of a protected subprogram. Such a body needs a
1127 -- cleanup handler to make sure that the associated protected object
1128 -- is unlocked when the subprogram completes.
1130 -- Is_Static_Expression (Flag6-Sem)
1131 -- Indicates that an expression is a static expression (RM 4.9). See
1132 -- spec of package Sem_Eval for full details on the use of this flag.
1134 -- Is_Subprogram_Descriptor (Flag16-Sem)
1135 -- Present in N_Object_Declaration, and set only for the object
1136 -- declaration generated for a subprogram descriptor in fast exception
1137 -- mode. See Exp_Ch11 for details of use.
1139 -- Is_Task_Allocation_Block (Flag6-Sem)
1140 -- A flag set in a Block_Statement node to indicate that it is the
1141 -- expansion of a task allocator, or the allocator of an object
1142 -- containing tasks. Such a block requires a cleanup handler to call
1143 -- Expunge_Unactivted_Tasks to complete any tasks that have been
1144 -- allocated but not activated when the allocator completes abnormally.
1146 -- Is_Task_Master (Flag5-Sem)
1147 -- A flag set in a Subprogram_Body, Block_Statement or Task_Body node
1148 -- to indicate that the construct is a task master (i.e. has declared
1149 -- tasks or declares an access to a task type).
1151 -- Itype (Node1-Sem)
1152 -- Used in N_Itype_Reference node to reference an itype for which it
1153 -- is important to ensure that it is defined. See description of this
1154 -- node for further details.
1156 -- Kill_Range_Check (Flag11-Sem)
1157 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
1158 -- result should not be subjected to range checks. This is used for
1159 -- the implementation of Normalize_Scalars.
1161 -- Label_Construct (Node2-Sem)
1162 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
1163 -- N_Block_Statement or N_Loop_Statement node to which the label
1164 -- declaration applies. This is not currently used in the compiler
1165 -- itself, but it is useful in the implementation of ASIS queries.
1167 -- Library_Unit (Node4-Sem)
1168 -- In a stub node, the Library_Unit field points to the compilation unit
1169 -- node of the corresponding subunit.
1171 -- In a with clause node, the Library_Unit field points to the spec
1172 -- of the with'ed unit.
1174 -- In a compilation unit node, the use of this field depends on
1177 -- For a subprogram body, the Library_Unit field points to the
1178 -- compilation unit node of the corresponding spec, unless
1179 -- Acts_As_Spec is set, in which case it points to itself.
1181 -- For a package body, the Library_Unit field points to the
1182 -- compilation unit node of the corresponding spec.
1184 -- For a subprogram spec to which pragma Inline applies, the
1185 -- Library_Unit field points to the compilation unit node of
1186 -- the corresponding body, if inlining is active.
1188 -- For a generic declaration, the Library_Unit field points
1189 -- to the compilation unit node of the corresponding generic body.
1191 -- For a subunit, the Library_Unit field points to the compilation
1192 -- unit node of the parent body.
1194 -- Note that this field is not used to hold the parent pointer for a
1195 -- child unit (which might in any case need to use it for some other
1196 -- purpose as described above). Instead for a child unit, implicit
1197 -- with's are generated for all parents.
1199 -- Loop_Actions (List2-Sem)
1200 -- A list present in Component_Association nodes in array aggregates.
1201 -- Used to collect actions that must be executed within the loop because
1202 -- they may need to be evaluated anew each time through.
1204 -- Limited_View_Installed (Flag18-Sem)
1205 -- Present in With_Clauses and in package specifications. If set on a
1206 -- with_clause, it indicates that this clause has created the current
1207 -- limited view of the designated package. On a package specification,
1208 -- it indicates that the limited view has already been created because
1209 -- the package is mentioned in a limited_with_clause in the closure of
1210 -- the unit being compiled.
1212 -- Must_Be_Byte_Aligned (Flag14-Sem)
1213 -- This flag is present in N_Attribute_Reference nodes. It can be set
1214 -- only for the Address and Unrestricted_Access attributes. If set it
1215 -- means that the object for which the address/access is given must be
1216 -- on a byte (more accurately a storage unit) boundary. If necessary,
1217 -- a copy of the object is to be made before taking the address (this
1218 -- copy is in the current scope on the stack frame). This is used for
1219 -- certain cases of code generated by the expander that passes
1220 -- parameters by address.
1222 -- The reason the copy is not made by the front end is that the back
1223 -- end has more information about type layout and may be able to (but
1224 -- is not guaranteed to) prevent making unnecessary copies.
1226 -- Must_Not_Freeze (Flag8-Sem)
1227 -- A flag present in all expression nodes. Normally expressions cause
1228 -- freezing as described in the RM. If this flag is set, then this
1229 -- is inhibited. This is used by the analyzer and expander to label
1230 -- nodes that are created by semantic analysis or expansion and which
1231 -- must not cause freezing even though they normally would. This flag
1232 -- is also present in an N_Subtype_Indication node, since we also use
1233 -- these in calls to Freeze_Expression.
1235 -- Next_Entity (Node2-Sem)
1236 -- Present in defining identifiers, defining character literals and
1237 -- defining operator symbols (i.e. in all entities). The entities of
1238 -- a scope are chained, and this field is used as the forward pointer
1239 -- for this list. See Einfo for further details.
1241 -- Next_Named_Actual (Node4-Sem)
1242 -- Present in parameter association node. Set during semantic
1243 -- analysis to point to the next named parameter, where parameters
1244 -- are ordered by declaration order (as opposed to the actual order
1245 -- in the call, which may be different due to named associations).
1246 -- Not that this field points to the explicit actual parameter itself,
1247 -- not to the N_Parameter_Association node (its parent).
1249 -- Next_Rep_Item (Node4-Sem)
1250 -- Present in pragma nodes and attribute definition nodes. Used to
1251 -- link representation items that apply to an entity. See description
1252 -- of First_Rep_Item field in Einfo for full details.
1254 -- Next_Use_Clause (Node3-Sem)
1255 -- While use clauses are active during semantic processing, they
1256 -- are chained from the scope stack entry, using Next_Use_Clause
1257 -- as a link pointer, with Empty marking the end of the list. The
1258 -- head pointer is in the scope stack entry (First_Use_Clause). At
1259 -- the end of semantic processing (i.e. when Gigi sees the tree,
1260 -- the contents of this field is undefined and should not be read).
1262 -- No_Ctrl_Actions (Flag7-Sem)
1263 -- Present in N_Assignment_Statement to indicate that no finalize nor
1264 -- nor adjust should take place on this assignment eventhough the rhs
1265 -- is controlled. This is used in init procs and aggregate expansions
1266 -- where the generated assignments are more initialisations than real
1269 -- No_Elaboration_Check (Flag14-Sem)
1270 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
1271 -- that no elaboration check is needed on the call, because it appears
1272 -- in the context of a local Suppress pragma. This is used on calls
1273 -- within task bodies, where the actual elaboration checks are applied
1274 -- after analysis, when the local scope stack is not present.
1276 -- No_Entities_Ref_In_Spec (Flag8-Sem)
1277 -- Present in N_With_Clause nodes. Set if the with clause is on the
1278 -- package or subprogram spec where the main unit is the corresponding
1279 -- body, and no entities of the with'ed unit are referenced by the spec
1280 -- (an entity may still be referenced in the body, so this flag is used
1281 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
1284 -- No_Initialization (Flag13-Sem)
1285 -- Present in N_Object_Declaration & N_Allocator to indicate
1286 -- that the object must not be initialized (by Initialize or a
1287 -- call to an init proc). This is needed for controlled aggregates.
1288 -- When the Object declaration has an expression, this flag means
1289 -- that this expression should not be taken into account (needed
1290 -- for in place initialization with aggregates)
1292 -- No_Truncation (Flag17-Sem)
1293 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
1294 -- only if the RM_Size of the source is greater than the RM_Size of the
1295 -- target for scalar operands. Normally in such a case we truncate some
1296 -- higher order bits of the source, and then sign/zero extend the result
1297 -- to form the output value. But if this flag is set, then we do not do
1298 -- any truncation, so for example, if an 8 bit input is converted to a
1299 -- 5 bit result which is in fact stored in 8 bits, then the high order
1300 -- three bits of the target result will be copied from the source. This
1301 -- is used for properly setting out of range values for use by pragmas
1302 -- Initialize_Scalars and Normalize_Scalars.
1304 -- OK_For_Stream (Flag4-Sem)
1305 -- Present in N_Attribute_Definition clauses for stream attributes. If
1306 -- set, indicates that the attribute is permitted even though the type
1307 -- involved is a limited type. In the case of a protected type, the
1308 -- result is to stream all components (including discriminants) in
1309 -- lexical order. For other limited types, the effect is simply to
1310 -- use the corresponding stream routine for the full type. This flag
1311 -- is used for internally generated code, where the streaming of these
1312 -- types is required, even though not normally allowed by the language.
1314 -- Original_Discriminant (Node2-Sem)
1315 -- Present in identifiers. Used in references to discriminants that
1316 -- appear in generic units. Because the names of the discriminants
1317 -- may be different in an instance, we use this field to recover the
1318 -- position of the discriminant in the original type, and replace it
1319 -- with the discriminant at the same position in the instantiated type.
1321 -- Original_Entity (Node2-Sem)
1322 -- Present in numeric literals. Used to denote the named number that
1323 -- has been constant-folded into the given literal. If literal is from
1324 -- source, or the result of some other constant-folding operation, then
1325 -- Original_Entity is empty. This field is needed to handle properly
1326 -- named numbers in generic units, where the Associated_Node field
1327 -- interferes with the Entity field, making it impossible to preserve
1328 -- the original entity at the point of instantiation (ASIS problem).
1330 -- Others_Discrete_Choices (List1-Sem)
1331 -- When a case statement or variant is analyzed, the semantic checks
1332 -- determine the actual list of choices that correspond to an others
1333 -- choice. This list is materialized for later use by the expander
1334 -- and the Others_Discrete_Choices field of an N_Others_Choice node
1335 -- points to this materialized list of choices, which is in standard
1336 -- format for a list of discrete choices, except that of course it
1337 -- cannot contain an N_Others_Choice entry.
1339 -- Parameter_List_Truncated (Flag17-Sem)
1340 -- Present in N_Function_Call and N_Procedure_Call_Statement nodes.
1341 -- Set (for OpenVMS ports of GNAT only) if the parameter list is
1342 -- truncated as a result of a First_Optional_Parameter specification
1343 -- in an Import_Function, Import_Procedure, or Import_Valued_Procedure
1344 -- pragma. The truncation is done by the expander by removing trailing
1345 -- parameters from the argument list, in accordance with the set of
1346 -- rules allowing such parameter removal. In particular, parameters
1347 -- can be removed working from the end of the parameter list backwards
1348 -- up to and including the entry designated by First_Optional_Parameter
1349 -- in the Import pragma. Parameters can be removed if they are implicit
1350 -- and the default value is a known-at-compile-time value, including
1351 -- the use of the Null_Parameter attribute, or if explicit parameter
1352 -- values are present that match the corresponding defaults.
1354 -- Parent_Spec (Node4-Sem)
1355 -- For a library unit that is a child unit spec (package or subprogram
1356 -- declaration, generic declaration or instantiation, or library level
1357 -- rename, this field points to the compilation unit node for the parent
1358 -- package specification. This field is Empty for library bodies (the
1359 -- parent spec in this case can be found from the corresponding spec).
1361 -- Present_Expr (Uint3-Sem)
1362 -- Present in an N_Variant node. This has a meaningful value only after
1363 -- Gigi has back annotated the tree with representation information.
1364 -- At this point, it contains a reference to a gcc expression that
1365 -- depends on the values of one or more discriminants. Give a set of
1366 -- discriminant values, this expression evaluates to False (zero) if
1367 -- variant is not present, and True (non-zero) if it is present. See
1368 -- unit Repinfo for further details on gigi back annotation. This
1369 -- field is used during ASIS processing (data decomposition annex)
1370 -- to determine if a field is present or not.
1372 -- Print_In_Hex (Flag13-Sem)
1373 -- Set on an N_Integer_Literal node to indicate that the value should
1374 -- be printed in hexadecimal in the sprint listing. Has no effect on
1375 -- legality or semantics of program, only on the displayed output.
1376 -- This is used to clarify output from the packed array cases.
1378 -- Procedure_To_Call (Node4-Sem)
1379 -- Present in N_Allocator. N_Free_Statement, and N_Return_Statement
1380 -- nodes. References the entity for the declaration of the procedure
1381 -- to be called to accomplish the required operation (i.e. for the
1382 -- Allocate procedure in the case of N_Allocator and N_Return_Statement
1383 -- (for allocating the return value), and for the Deallocate procedure
1384 -- in the case of N_Free_Statement.
1386 -- Raises_Constraint_Error (Flag7-Sem)
1387 -- Set on an expression whose evaluation will definitely fail a
1388 -- constraint error check. In the case of static expressions, this
1389 -- flag must be set accurately (and if it is set, the expression is
1390 -- typically illegal unless it appears as a non-elaborated branch of
1391 -- a short-circuit form). For a non-static expression, this flag may
1392 -- be set whenever an expression (e.g. an aggregate) is known to raise
1393 -- constraint error. If set, the expression definitely will raise CE
1394 -- if elaborated at runtime. If not set, the expression may or may
1395 -- not raise CE. In other words, on static expressions, the flag is
1396 -- set accurately, on non-static expressions it is set conservatively.
1398 -- Redundant_Use (Flag13-Sem)
1399 -- A flag present in nodes that can appear as an operand in a use
1400 -- clause or use type clause (identifiers, expanded names, attribute
1401 -- references). Set to indicate that a use is redundant (and therefore
1402 -- need not be undone on scope exit).
1404 -- Return_Type (Node2-Sem)
1405 -- Present in N_Return_Statement node. For a procedure, this is set
1406 -- to Standard_Void_Type. For a function it references the entity
1407 -- for the returned type.
1409 -- Rounded_Result (Flag18-Sem)
1410 -- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
1411 -- Used in the fixed-point cases to indicate that the result must be
1412 -- rounded as a result of the use of the 'Round attribute. Also used
1413 -- for integer N_Op_Divide nodes to indicate that the result should
1414 -- be rounded to the nearest integer (breaking ties away from zero),
1415 -- rather than truncated towards zero as usual. These rounded integer
1416 -- operations are the result of expansion of rounded fixed-point
1417 -- divide, conersion and multiplication operations.
1419 -- Scope (Node3-Sem)
1420 -- Present in defining identifiers, defining character literals and
1421 -- defining operator symbols (i.e. in all entities). The entities of
1422 -- a scope all use this field to reference the corresponding scope
1423 -- entity. See Einfo for further details.
1425 -- Shift_Count_OK (Flag4-Sem)
1426 -- A flag present in shift nodes to indicate that the shift count is
1427 -- known to be in range, i.e. is in the range from zero to word length
1428 -- minus one. If this flag is not set, then the shift count may be
1429 -- outside this range, i.e. larger than the word length, and the code
1430 -- must ensure that such shift counts give the appropriate result.
1432 -- Source_Type (Node1-Sem)
1433 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1434 -- source type entity for the unchecked conversion instantiation
1435 -- which gigi must do size validation for.
1437 -- Static_Processing_OK (Flag4-Sem)
1438 -- Present in N_Aggregate nodes. When the Compile_Time_Known_Aggregate
1439 -- flag is set, the full value of the aggregate can be determined at
1440 -- compile time and the aggregate can be passed as is to the back-end.
1441 -- In this event it is irrelevant whether this flag is set or not.
1442 -- However, if the Compile_Time_Known_Aggregate flag is not set but
1443 -- Static_Processing_OK is set, the aggregate can (but need not) be
1444 -- converted into a compile time known aggregate by the expander.
1445 -- See Sem_Aggr for the specific conditions under which an aggregate
1446 -- has its Static_Processing_OK flag set.
1448 -- Storage_Pool (Node1-Sem)
1449 -- Present in N_Allocator, N_Free_Statement and N_Return_Statement
1450 -- nodes. References the entity for the storage pool to be used for
1451 -- the allocate or free call or for the allocation of the returned
1452 -- value from a function. Empty indicates that the global default
1453 -- default pool is to be used. Note that in the case of a return
1454 -- statement, this field is set only if the function returns a
1455 -- value of a type whose size is not known at compile time on the
1456 -- secondary stack. It is never set on targets for which the target
1457 -- parameter Targparm.Functions_Return_By_DSP_On_Target is True.
1459 -- Target_Type (Node2-Sem)
1460 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1461 -- target type entity for the unchecked conversion instantiation
1462 -- which gigi must do size validation for.
1464 -- Task_Body_Procedure (Node2-Sem)
1465 -- Present in task type declaration nodes. Points to the entity for
1466 -- the task body procedure (as further described in Exp_Ch9, task
1467 -- bodies are expanded into procedures). A convenient function to
1468 -- retrieve this field is Sem_Util.Get_Task_Body_Procedure.
1470 -- Then_Actions (List3-Sem)
1471 -- This field is present in conditional expression nodes. During code
1472 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1473 -- actions at an appropriate place in the tree to get elaborated at the
1474 -- right time. For conditional expressions, we have to be sure that the
1475 -- actions for the Then branch are only elaborated if the condition is
1476 -- True. The Then_Actions field is used as a temporary parking place
1477 -- for these actions. The final tree is always rewritten to eliminate
1478 -- the need for this field, so in the tree passed to Gigi, this field
1479 -- is always set to No_List.
1481 -- Treat_Fixed_As_Integer (Flag14-Sem)
1482 -- This flag appears in operator nodes for divide, multiply, mod and
1483 -- rem on fixed-point operands. It indicates that the operands are
1484 -- to be treated as integer values, ignoring small values. This flag
1485 -- is only set as a result of expansion of fixed-point operations.
1486 -- Typically a fixed-point multplication in the source generates
1487 -- subsidiary multiplication and division operations that work with
1488 -- the underlying integer values and have this flag set. Note that
1489 -- this flag is not needed on other arithmetic operations (add, neg,
1490 -- subtract etc) since in these cases it is always the case that fixed
1491 -- is treated as integer. The Etype field MUST be set if this flag
1492 -- is set. The analyzer knows to leave such nodes alone, and whoever
1493 -- makes them must set the correct Etype value.
1495 -- TSS_Elist (Elist3-Sem)
1496 -- Present in N_Freeze_Entity nodes. Holds an element list containing
1497 -- entries for each TSS (type support subprogram) associated with the
1498 -- frozen type. The elements of the list are the entities for the
1499 -- subprograms (see package Exp_TSS for further details). Set to
1500 -- No_Elist if there are no type support subprograms for the type
1501 -- or if the freeze node is not for a type.
1503 -- Unreferenced_In_Spec (Flag7-Sem)
1504 -- Present in N_With_Clause nodes. Set if the with clause is on the
1505 -- package or subprogram spec where the main unit is the corresponding
1506 -- body, and is not referenced by the spec (it may still be referenced
1507 -- by the body, so this flag is used to generate the proper message
1508 -- (see Sem_Util.Check_Unused_Withs for details)
1510 -- Was_Originally_Stub (Flag13-Sem)
1511 -- This flag is set in the node for a proper body that replaces a
1512 -- stub. During the analysis procedure, stubs in some situations
1513 -- get rewritten by the corresponding bodies, and we set this flag
1514 -- to remember that this happened. Note that it is not good enough
1515 -- to rely on the use of Original_Tree here because of the case of
1516 -- nested instantiations where the substituted node can be copied.
1518 -- Zero_Cost_Handling (Flag5-Sem)
1519 -- This flag is set in all handled sequence of statement and exception
1520 -- handler nodes if eceptions are to be handled using the zero-cost
1521 -- mechanism (see Ada.Exceptions and System.Exceptions in files
1522 -- a-except.ads/adb and s-except.ads for full details). What gigi
1523 -- needs to do for such a handler is simply to put the code in the
1524 -- handler somewhere. The front end has generated all necessary labels.
1526 --------------------------------------------------
1527 -- Note on Use of End_Label and End_Span Fields --
1528 --------------------------------------------------
1530 -- Several constructs have end lines:
1532 -- Loop Statement end loop [loop_IDENTIFIER];
1533 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
1534 -- Task Definition end [task_IDENTIFIER]
1535 -- Protected Definition end [protected_IDENTIFIER]
1536 -- Protected Body end [protected_IDENTIFIER]
1538 -- Block Statement end [block_IDENTIFIER];
1539 -- Subprogram Body end [DESIGNATOR];
1540 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
1541 -- Task Body end [task_IDENTIFIER];
1542 -- Accept Statement end [entry_IDENTIFIER]];
1543 -- Entry Body end [entry_IDENTIFIER];
1545 -- If Statement end if;
1546 -- Case Statement end case;
1548 -- Record Definition end record;
1549 -- Enumeration Definition );
1551 -- The End_Label and End_Span fields are used to mark the locations
1552 -- of these lines, and also keep track of the label in the case where
1553 -- a label is present.
1555 -- For the first group above, the End_Label field of the corresponding
1556 -- node is used to point to the label identifier. In the case where
1557 -- there is no label in the source, the parser supplies a dummy
1558 -- identifier (with Comes_From_Source set to False), and the Sloc
1559 -- of this dummy identifier marks the location of the token following
1562 -- For the second group, the use of End_Label is similar, but the
1563 -- End_Label is found in the N_Handled_Sequence_Of_Statements node.
1564 -- This is done simply because in some cases there is no room in
1567 -- For the third group, there is never any label, and instead of
1568 -- using End_Label, we use the End_Span field which gives the
1569 -- location of the token following END, relative to the starting
1570 -- Sloc of the construct, i.e. add Sloc (Node) + End_Span (Node)
1571 -- to get the Sloc of the IF or CASE following the End_Label.
1573 -- The record definition case is handled specially, we treat it
1574 -- as though it required an optional label which is never present,
1575 -- and so the parser always builds a dummy identifier with Comes
1576 -- From Source set False. The reason we do this, rather than using
1577 -- End_Span in this case, is that we want to generate a cross-ref
1578 -- entry for the end of a record, since it represents a scope for
1579 -- name declaration purposes.
1581 -- The enumeration definition case is handled in an exactly similar
1582 -- manner, building a dummy identifier to get a cross-reference.
1584 -- Note: the reason we store the difference as a Uint, instead of
1585 -- storing the Source_Ptr value directly, is that Source_Ptr values
1586 -- cannot be distinguished from other types of values, and we count
1587 -- on all general use fields being self describing. To make things
1588 -- easier for clients, note that we provide function End_Location,
1589 -- and procedure Set_End_Location to allow access to the logical
1590 -- value (which is the Source_Ptr value for the end token).
1592 ---------------------
1593 -- Syntactic Nodes --
1594 ---------------------
1596 ---------------------
1597 -- 2.3 Identifier --
1598 ---------------------
1600 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
1601 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
1603 -- An IDENTIFIER shall not be a reserved word
1605 -- In the Ada grammar identifiers are the bottom level tokens which
1606 -- have very few semantics. Actual program identifiers are direct
1607 -- names. If we were being 100% honest with the grammar, then we would
1608 -- have a node called N_Direct_Name which would point to an identifier.
1609 -- However, that's too many extra nodes, so we just use the N_Identifier
1610 -- node directly as a direct name, and it contains the expression fields
1611 -- and Entity field that correspond to its use as a direct name. In
1612 -- those few cases where identifiers appear in contexts where they are
1613 -- not direct names (pragmas, pragma argument associations, attribute
1614 -- references and attribute definition clauses), the Chars field of the
1615 -- node contains the Name_Id for the identifier name.
1617 -- Note: in GNAT, a reserved word can be treated as an identifier
1618 -- in two cases. First, an incorrect use of a reserved word as an
1619 -- identifier is diagnosed and then treated as a normal identifier.
1620 -- Second, an attribute designator of the form of a reserved word
1621 -- (access, delta, digits, range) is treated as an identifier.
1623 -- Note: The set of letters that is permitted in an identifier depends
1624 -- on the character set in use. See package Csets for full details.
1627 -- Sloc points to identifier
1628 -- Chars (Name1) contains the Name_Id for the identifier
1629 -- Entity (Node4-Sem)
1630 -- Associated_Node (Node4-Sem)
1631 -- Original_Discriminant (Node2-Sem)
1632 -- Redundant_Use (Flag13-Sem)
1633 -- Has_Private_View (Flag11-Sem) (set in generic units)
1634 -- plus fields for expression
1636 --------------------------
1637 -- 2.4 Numeric Literal --
1638 --------------------------
1640 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
1642 ----------------------------
1643 -- 2.4.1 Decimal Literal --
1644 ----------------------------
1646 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
1648 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
1650 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
1652 -- Decimal literals appear in the tree as either integer literal nodes
1653 -- or real literal nodes, depending on whether a period is present.
1655 -- Note: literal nodes appear as a result of direct use of literals
1656 -- in the source program, and also as the result of evaluating
1657 -- expressions at compile time. In the latter case, it is possible
1658 -- to construct real literals that have no syntactic representation
1659 -- using the standard literal format. Such literals are listed by
1660 -- Sprint using the notation [numerator / denominator].
1662 -- N_Integer_Literal
1663 -- Sloc points to literal
1664 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1665 -- has been constant-folded into its literal value.
1666 -- Intval (Uint3) contains integer value of literal
1667 -- plus fields for expression
1668 -- Print_In_Hex (Flag13-Sem)
1671 -- Sloc points to literal
1672 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1673 -- has been constant-folded into its literal value.
1674 -- Realval (Ureal3) contains real value of literal
1675 -- Corresponding_Integer_Value (Uint4-Sem)
1676 -- Is_Machine_Number (Flag11-Sem)
1677 -- plus fields for expression
1679 --------------------------
1680 -- 2.4.2 Based Literal --
1681 --------------------------
1683 -- BASED_LITERAL ::=
1684 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
1688 -- BASED_NUMERAL ::=
1689 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
1691 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
1693 -- Based literals appear in the tree as either integer literal nodes
1694 -- or real literal nodes, depending on whether a period is present.
1696 ----------------------------
1697 -- 2.5 Character Literal --
1698 ----------------------------
1700 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
1702 -- N_Character_Literal
1703 -- Sloc points to literal
1704 -- Chars (Name1) contains the Name_Id for the identifier
1705 -- Char_Literal_Value (Char_Code2) contains the literal value
1706 -- Entity (Node4-Sem)
1707 -- Associated_Node (Node4-Sem)
1708 -- Has_Private_View (Flag11-Sem) set in generic units.
1709 -- plus fields for expression
1711 -- Note: the Entity field will be missing (and set to Empty) for
1712 -- character literals whose type is Standard.Wide_Character or
1713 -- Standard.Character or a type derived from one of these two.
1714 -- In this case the character literal stands for its own coding.
1715 -- The reason we take this irregular short cut is to avoid the
1716 -- need to build lots of junk defining character literal nodes.
1718 -------------------------
1719 -- 2.6 String Literal --
1720 -------------------------
1722 -- STRING LITERAL ::= "{STRING_ELEMENT}"
1724 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
1725 -- single GRAPHIC_CHARACTER other than a quotation mark.
1728 -- Sloc points to literal
1729 -- Strval (Str3) contains Id of string value
1730 -- Has_Wide_Character (Flag11-Sem)
1731 -- plus fields for expression
1737 -- A COMMENT starts with two adjacent hyphens and extends up to the
1738 -- end of the line. A COMMENT may appear on any line of a program.
1740 -- Comments are skipped by the scanner and do not appear in the tree.
1741 -- It is possible to reconstruct the position of comments with respect
1742 -- to the elements of the tree by using the source position (Sloc)
1743 -- pointers that appear in every tree node.
1749 -- PRAGMA ::= pragma IDENTIFIER
1750 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
1752 -- Note that a pragma may appear in the tree anywhere a declaration
1753 -- or a statement may appear, as well as in some other situations
1754 -- which are explicitly documented.
1757 -- Sloc points to PRAGMA
1758 -- Chars (Name1) identifier name from pragma identifier
1759 -- Pragma_Argument_Associations (List2) (set to No_List if none)
1760 -- Debug_Statement (Node3) (set to Empty if not Debug, Assert)
1761 -- Next_Rep_Item (Node4-Sem)
1763 --------------------------------------
1764 -- 2.8 Pragma Argument Association --
1765 --------------------------------------
1767 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
1768 -- [pragma_argument_IDENTIFIER =>] NAME
1769 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
1771 -- N_Pragma_Argument_Association
1772 -- Sloc points to first token in association
1773 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
1774 -- Expression (Node3)
1776 ------------------------
1777 -- 2.9 Reserved Word --
1778 ------------------------
1780 -- Reserved words are parsed by the scanner, and returned as the
1781 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
1783 ----------------------------
1784 -- 3.1 Basic Declaration --
1785 ----------------------------
1787 -- BASIC_DECLARATION ::=
1788 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
1789 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
1790 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
1791 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
1792 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
1793 -- | GENERIC_INSTANTIATION
1795 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
1796 -- see further description in section on semantic nodes.
1798 -- Also, in the tree that is constructed, a pragma may appear
1799 -- anywhere that a declaration may appear.
1801 ------------------------------
1802 -- 3.1 Defining Identifier --
1803 ------------------------------
1805 -- DEFINING_IDENTIFIER ::= IDENTIFIER
1807 -- A defining identifier is an entity, which has additional fields
1808 -- depending on the setting of the Ekind field. These additional
1809 -- fields are defined (and access subprograms declared) in package
1812 -- Note: N_Defining_Identifier is an extended node whose fields are
1813 -- deliberate layed out to match the layout of fields in an ordinary
1814 -- N_Identifier node allowing for easy alteration of an identifier
1815 -- node into a defining identifier node. For details, see procedure
1816 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
1818 -- N_Defining_Identifier
1819 -- Sloc points to identifier
1820 -- Chars (Name1) contains the Name_Id for the identifier
1821 -- Next_Entity (Node2-Sem)
1822 -- Scope (Node3-Sem)
1823 -- Etype (Node5-Sem)
1825 -----------------------------
1826 -- 3.2.1 Type Declaration --
1827 -----------------------------
1829 -- TYPE_DECLARATION ::=
1830 -- FULL_TYPE_DECLARATION
1831 -- | INCOMPLETE_TYPE_DECLARATION
1832 -- | PRIVATE_TYPE_DECLARATION
1833 -- | PRIVATE_EXTENSION_DECLARATION
1835 ----------------------------------
1836 -- 3.2.1 Full Type Declaration --
1837 ----------------------------------
1839 -- FULL_TYPE_DECLARATION ::=
1840 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
1841 -- is TYPE_DEFINITION;
1842 -- | TASK_TYPE_DECLARATION
1843 -- | PROTECTED_TYPE_DECLARATION
1845 -- The full type declaration node is used only for the first case. The
1846 -- second case (concurrent type declaration), is represented directly
1847 -- by a task type declaration or a protected type declaration.
1849 -- N_Full_Type_Declaration
1850 -- Sloc points to TYPE
1851 -- Defining_Identifier (Node1)
1852 -- Discriminant_Specifications (List4) (set to No_List if none)
1853 -- Type_Definition (Node3)
1854 -- Discr_Check_Funcs_Built (Flag11-Sem)
1856 ----------------------------
1857 -- 3.2.1 Type Definition --
1858 ----------------------------
1860 -- TYPE_DEFINITION ::=
1861 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
1862 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
1863 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
1864 -- | DERIVED_TYPE_DEFINITION
1866 --------------------------------
1867 -- 3.2.2 Subtype Declaration --
1868 --------------------------------
1870 -- SUBTYPE_DECLARATION ::=
1871 -- subtype DEFINING_IDENTIFIER is SUBTYPE_INDICATION;
1873 -- The subtype indication field is set to Empty for subtypes
1874 -- declared in package Standard (Positive, Natural).
1876 -- N_Subtype_Declaration
1877 -- Sloc points to SUBTYPE
1878 -- Defining_Identifier (Node1)
1879 -- Subtype_Indication (Node5)
1880 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
1881 -- Exception_Junk (Flag11-Sem)
1883 -------------------------------
1884 -- 3.2.2 Subtype Indication --
1885 -------------------------------
1887 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
1889 -- Note: if no constraint is present, the subtype indication appears
1890 -- directly in the tree as a subtype mark. The N_Subtype_Indication
1891 -- node is used only if a constraint is present.
1893 -- Note: the reason that this node has expression fields is that a
1894 -- subtype indication can appear as an operand of a membership test.
1896 -- N_Subtype_Indication
1897 -- Sloc points to first token of subtype mark
1898 -- Subtype_Mark (Node4)
1899 -- Constraint (Node3)
1900 -- Etype (Node5-Sem)
1901 -- Must_Not_Freeze (Flag8-Sem)
1903 -- Note: Etype is a copy of the Etype field of the Subtype_Mark. The
1904 -- reason for this redundancy is so that in a list of array index types,
1905 -- the Etype can be uniformly accessed to determine the subscript type.
1906 -- This means that no Itype is constructed for the actual subtype that
1907 -- is created by the subtype indication. If such an Itype is required,
1908 -- it is constructed in the context in which the indication appears.
1910 -------------------------
1911 -- 3.2.2 Subtype Mark --
1912 -------------------------
1914 -- SUBTYPE_MARK ::= subtype_NAME
1916 -----------------------
1917 -- 3.2.2 Constraint --
1918 -----------------------
1920 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
1922 ------------------------------
1923 -- 3.2.2 Scalar Constraint --
1924 ------------------------------
1926 -- SCALAR_CONSTRAINT ::=
1927 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
1929 ---------------------------------
1930 -- 3.2.2 Composite Constraint --
1931 ---------------------------------
1933 -- COMPOSITE_CONSTRAINT ::=
1934 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
1936 -------------------------------
1937 -- 3.3.1 Object Declaration --
1938 -------------------------------
1940 -- OBJECT_DECLARATION ::=
1941 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1942 -- SUBTYPE_INDICATION [:= EXPRESSION];
1943 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1944 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION];
1945 -- | SINGLE_TASK_DECLARATION
1946 -- | SINGLE_PROTECTED_DECLARATION
1948 -- Note: aliased is not permitted in Ada 83 mode
1950 -- The N_Object_Declaration node is only for the first two cases.
1951 -- Single task declaration is handled by P_Task (9.1)
1952 -- Single protected declaration is handled by P_protected (9.5)
1954 -- Although the syntax allows multiple identifiers in the list, the
1955 -- semantics is as though successive declarations were given with
1956 -- identical type definition and expression components. To simplify
1957 -- semantic processing, the parser represents a multiple declaration
1958 -- case as a sequence of single declarations, using the More_Ids and
1959 -- Prev_Ids flags to preserve the original source form as described
1960 -- in the section on "Handling of Defining Identifier Lists".
1962 -- Note: if a range check is required for the initialization
1963 -- expression then the Do_Range_Check flag is set in the Expression,
1964 -- with the check being done against the type given by the object
1965 -- definition, which is also the Etype of the defining identifier.
1967 -- Note: the contents of the Expression field must be ignored (i.e.
1968 -- treated as though it were Empty) if No_Initialization is set True.
1970 -- Note: the back end places some restrictions on the form of the
1971 -- Expression field. If the object being declared is Atomic, then
1972 -- the Expression may not have the form of an aggregate (since this
1973 -- might cause the back end to generate separate assignments). It
1974 -- also cannot be a reference to an object marked as a true constant
1975 -- (Is_True_Constant flag set), where the object is itself initalized
1976 -- with an aggregate. If necessary the front end must generate an
1977 -- extra temporary (with Is_True_Constant set False), and initialize
1978 -- this temporary as required (the temporary itself is not atomic).
1980 -- N_Object_Declaration
1981 -- Sloc points to first identifier
1982 -- Defining_Identifier (Node1)
1983 -- Aliased_Present (Flag4) set if ALIASED appears
1984 -- Constant_Present (Flag17) set if CONSTANT appears
1985 -- Object_Definition (Node4) subtype indication/array type definition
1986 -- Expression (Node3) (set to Empty if not present)
1987 -- Handler_List_Entry (Node2-Sem)
1988 -- Corresponding_Generic_Association (Node5-Sem)
1989 -- More_Ids (Flag5) (set to False if no more identifiers in list)
1990 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
1991 -- No_Initialization (Flag13-Sem)
1992 -- Assignment_OK (Flag15-Sem)
1993 -- Exception_Junk (Flag11-Sem)
1994 -- Delay_Finalize_Attach (Flag14-Sem)
1995 -- Is_Subprogram_Descriptor (Flag16-Sem)
1997 -------------------------------------
1998 -- 3.3.1 Defining Identifier List --
1999 -------------------------------------
2001 -- DEFINING_IDENTIFIER_LIST ::=
2002 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
2004 -------------------------------
2005 -- 3.3.2 Number Declaration --
2006 -------------------------------
2008 -- NUMBER_DECLARATION ::=
2009 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
2011 -- Although the syntax allows multiple identifiers in the list, the
2012 -- semantics is as though successive declarations were given with
2013 -- identical expressions. To simplify semantic processing, the parser
2014 -- represents a multiple declaration case as a sequence of single
2015 -- declarations, using the More_Ids and Prev_Ids flags to preserve
2016 -- the original source form as described in the section on "Handling
2017 -- of Defining Identifier Lists".
2019 -- N_Number_Declaration
2020 -- Sloc points to first identifier
2021 -- Defining_Identifier (Node1)
2022 -- Expression (Node3)
2023 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2024 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2026 ----------------------------------
2027 -- 3.4 Derived Type Definition --
2028 ----------------------------------
2030 -- DERIVED_TYPE_DEFINITION ::=
2031 -- [abstract] new parent_SUBTYPE_INDICATION [RECORD_EXTENSION_PART]
2033 -- Note: ABSTRACT, record extension part not permitted in Ada 83 mode
2035 -- Note: a record extension part is required if ABSTRACT is present
2037 -- N_Derived_Type_Definition
2038 -- Sloc points to NEW
2039 -- Abstract_Present (Flag4)
2040 -- Subtype_Indication (Node5)
2041 -- Record_Extension_Part (Node3) (set to Empty if not present)
2043 ---------------------------
2044 -- 3.5 Range Constraint --
2045 ---------------------------
2047 -- RANGE_CONSTRAINT ::= range RANGE
2049 -- N_Range_Constraint
2050 -- Sloc points to RANGE
2051 -- Range_Expression (Node4)
2058 -- RANGE_ATTRIBUTE_REFERENCE
2059 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
2061 -- Note: the case of a range given as a range attribute reference
2062 -- appears directly in the tree as an attribute reference.
2064 -- Note: the field name for a reference to a range is Range_Expression
2065 -- rather than Range, because range is a reserved keyword in Ada!
2067 -- Note: the reason that this node has expression fields is that a
2068 -- range can appear as an operand of a membership test. The Etype
2069 -- field is the type of the range (we do NOT construct an implicit
2070 -- subtype to represent the range exactly).
2073 -- Sloc points to ..
2074 -- Low_Bound (Node1)
2075 -- High_Bound (Node2)
2076 -- Includes_Infinities (Flag11)
2077 -- plus fields for expression
2079 -- Note: if the range appears in a context, such as a subtype
2080 -- declaration, where range checks are required on one or both of
2081 -- the expression fields, then type conversion nodes are inserted
2082 -- to represent the required checks.
2084 ----------------------------------------
2085 -- 3.5.1 Enumeration Type Definition --
2086 ----------------------------------------
2088 -- ENUMERATION_TYPE_DEFINITION ::=
2089 -- (ENUMERATION_LITERAL_SPECIFICATION
2090 -- {, ENUMERATION_LITERAL_SPECIFICATION})
2092 -- Note: the Literals field in the node described below is null for
2093 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
2094 -- which special processing handles these types as special cases.
2096 -- N_Enumeration_Type_Definition
2097 -- Sloc points to left parenthesis
2098 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
2099 -- End_Label (Node4) (set to Empty if internally generated record)
2101 ----------------------------------------------
2102 -- 3.5.1 Enumeration Literal Specification --
2103 ----------------------------------------------
2105 -- ENUMERATION_LITERAL_SPECIFICATION ::=
2106 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
2108 ---------------------------------------
2109 -- 3.5.1 Defining Character Literal --
2110 ---------------------------------------
2112 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
2114 -- A defining character literal is an entity, which has additional
2115 -- fields depending on the setting of the Ekind field. These
2116 -- additional fields are defined (and access subprograms declared)
2117 -- in package Einfo.
2119 -- Note: N_Defining_Character_Literal is an extended node whose fields
2120 -- are deliberate layed out to match the layout of fields in an ordinary
2121 -- N_Character_Literal node allowing for easy alteration of a character
2122 -- literal node into a defining character literal node. For details, see
2123 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
2125 -- N_Defining_Character_Literal
2126 -- Sloc points to literal
2127 -- Chars (Name1) contains the Name_Id for the identifier
2128 -- Next_Entity (Node2-Sem)
2129 -- Scope (Node3-Sem)
2130 -- Etype (Node5-Sem)
2132 ------------------------------------
2133 -- 3.5.4 Integer Type Definition --
2134 ------------------------------------
2136 -- Note: there is an error in this rule in the latest version of the
2137 -- grammar, so we have retained the old rule pending clarification.
2139 -- INTEGER_TYPE_DEFINITION ::=
2140 -- SIGNED_INTEGER_TYPE_DEFINITION
2141 -- MODULAR_TYPE_DEFINITION
2143 -------------------------------------------
2144 -- 3.5.4 Signed Integer Type Definition --
2145 -------------------------------------------
2147 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
2148 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2150 -- Note: the Low_Bound and High_Bound fields are set to Empty for
2151 -- integer types defined in package Standard.
2153 -- N_Signed_Integer_Type_Definition
2154 -- Sloc points to RANGE
2155 -- Low_Bound (Node1)
2156 -- High_Bound (Node2)
2158 -----------------------------------------
2159 -- 3.5.4 Unsigned Range Specification --
2160 -----------------------------------------
2162 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
2164 -- N_Modular_Type_Definition
2165 -- Sloc points to MOD
2166 -- Expression (Node3)
2168 ---------------------------------
2169 -- 3.5.6 Real Type Definition --
2170 ---------------------------------
2172 -- REAL_TYPE_DEFINITION ::=
2173 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
2175 --------------------------------------
2176 -- 3.5.7 Floating Point Definition --
2177 --------------------------------------
2179 -- FLOATING_POINT_DEFINITION ::=
2180 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
2182 -- Note: The Digits_Expression and Real_Range_Specifications fields
2183 -- are set to Empty for floating-point types declared in Standard.
2185 -- N_Floating_Point_Definition
2186 -- Sloc points to DIGITS
2187 -- Digits_Expression (Node2)
2188 -- Real_Range_Specification (Node4) (set to Empty if not present)
2190 -------------------------------------
2191 -- 3.5.7 Real Range Specification --
2192 -------------------------------------
2194 -- REAL_RANGE_SPECIFICATION ::=
2195 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2197 -- N_Real_Range_Specification
2198 -- Sloc points to RANGE
2199 -- Low_Bound (Node1)
2200 -- High_Bound (Node2)
2202 -----------------------------------
2203 -- 3.5.9 Fixed Point Definition --
2204 -----------------------------------
2206 -- FIXED_POINT_DEFINITION ::=
2207 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
2209 --------------------------------------------
2210 -- 3.5.9 Ordinary Fixed Point Definition --
2211 --------------------------------------------
2213 -- ORDINARY_FIXED_POINT_DEFINITION ::=
2214 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
2216 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2218 -- Note: the Delta_Expression and Real_Range_Specification fields
2219 -- are set to Empty for fixed point types declared in Standard.
2221 -- N_Ordinary_Fixed_Point_Definition
2222 -- Sloc points to DELTA
2223 -- Delta_Expression (Node3)
2224 -- Real_Range_Specification (Node4)
2226 -------------------------------------------
2227 -- 3.5.9 Decimal Fixed Point Definition --
2228 -------------------------------------------
2230 -- DECIMAL_FIXED_POINT_DEFINITION ::=
2231 -- delta static_EXPRESSION
2232 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
2234 -- Note: decimal types are not permitted in Ada 83 mode
2236 -- N_Decimal_Fixed_Point_Definition
2237 -- Sloc points to DELTA
2238 -- Delta_Expression (Node3)
2239 -- Digits_Expression (Node2)
2240 -- Real_Range_Specification (Node4) (set to Empty if not present)
2242 ------------------------------
2243 -- 3.5.9 Digits Constraint --
2244 ------------------------------
2246 -- DIGITS_CONSTRAINT ::=
2247 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
2249 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2250 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
2252 -- N_Digits_Constraint
2253 -- Sloc points to DIGITS
2254 -- Digits_Expression (Node2)
2255 -- Range_Constraint (Node4) (set to Empty if not present)
2257 --------------------------------
2258 -- 3.6 Array Type Definition --
2259 --------------------------------
2261 -- ARRAY_TYPE_DEFINITION ::=
2262 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
2264 -----------------------------------------
2265 -- 3.6 Unconstrained Array Definition --
2266 -----------------------------------------
2268 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
2269 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
2270 -- COMPONENT_DEFINITION
2272 -- Note: dimensionality of array is indicated by number of entries in
2273 -- the Subtype_Marks list, which has one entry for each dimension.
2275 -- N_Unconstrained_Array_Definition
2276 -- Sloc points to ARRAY
2277 -- Subtype_Marks (List2)
2278 -- Component_Definition (Node4)
2280 -----------------------------------
2281 -- 3.6 Index Subtype Definition --
2282 -----------------------------------
2284 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
2286 -- There is no explicit node in the tree for an index subtype
2287 -- definition since the N_Unconstrained_Array_Definition node
2288 -- incorporates the type marks which appear in this context.
2290 ---------------------------------------
2291 -- 3.6 Constrained Array Definition --
2292 ---------------------------------------
2294 -- CONSTRAINED_ARRAY_DEFINITION ::=
2295 -- array (DISCRETE_SUBTYPE_DEFINITION
2296 -- {, DISCRETE_SUBTYPE_DEFINITION})
2297 -- of COMPONENT_DEFINITION
2299 -- Note: dimensionality of array is indicated by number of entries
2300 -- in the Discrete_Subtype_Definitions list, which has one entry
2301 -- for each dimension.
2303 -- N_Constrained_Array_Definition
2304 -- Sloc points to ARRAY
2305 -- Discrete_Subtype_Definitions (List2)
2306 -- Component_Definition (Node4)
2308 --------------------------------------
2309 -- 3.6 Discrete Subtype Definition --
2310 --------------------------------------
2312 -- DISCRETE_SUBTYPE_DEFINITION ::=
2313 -- discrete_SUBTYPE_INDICATION | RANGE
2315 -------------------------------
2316 -- 3.6 Component Definition --
2317 -------------------------------
2319 -- COMPONENT_DEFINITION ::=
2320 -- [aliased] SUBTYPE_INDICATION | ACCESS_DEFINITION
2322 -- Note: although the syntax does not permit a component definition to
2323 -- be an anonymous array (and the parser will diagnose such an attempt
2324 -- with an appropriate message), it is possible for anonymous arrays
2325 -- to appear as component definitions. The semantics and back end handle
2326 -- this case properly, and the expander in fact generates such cases.
2327 -- Access_Definition is an optional field that gives support to Ada 0Y
2328 -- (AI-230). The parser generates nodes that have either the
2329 -- Subtype_Indication field or else the Access_Definition field.
2331 -- N_Component_Definition
2332 -- Sloc points to ALIASED, ACCESS or to first token of subtype mark
2333 -- Aliased_Present (Flag4)
2334 -- Subtype_Indication (Node5) (set to Empty if not present)
2335 -- Access_Definition (Node3) (set to Empty if not present)
2337 -----------------------------
2338 -- 3.6.1 Index Constraint --
2339 -----------------------------
2341 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
2343 -- It is not in general possible to distinguish between discriminant
2344 -- constraints and index constraints at parse time, since a simple
2345 -- name could be either the subtype mark of a discrete range, or an
2346 -- expression in a discriminant association with no name. Either
2347 -- entry appears simply as the name, and the semantic parse must
2348 -- distinguish between the two cases. Thus we use a common tree
2349 -- node format for both of these constraint types.
2351 -- See Discriminant_Constraint for format of node
2353 ---------------------------
2354 -- 3.6.1 Discrete Range --
2355 ---------------------------
2357 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
2359 ----------------------------
2360 -- 3.7 Discriminant Part --
2361 ----------------------------
2363 -- DISCRIMINANT_PART ::=
2364 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
2366 ------------------------------------
2367 -- 3.7 Unknown Discriminant Part --
2368 ------------------------------------
2370 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
2372 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
2374 -- There is no explicit node in the tree for an unknown discriminant
2375 -- part. Instead the Unknown_Discriminants_Present flag is set in the
2378 ----------------------------------
2379 -- 3.7 Known Discriminant Part --
2380 ----------------------------------
2382 -- KNOWN_DISCRIMINANT_PART ::=
2383 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
2385 -------------------------------------
2386 -- 3.7 Discriminant Specification --
2387 -------------------------------------
2389 -- DISCRIMINANT_SPECIFICATION ::=
2390 -- DEFINING_IDENTIFIER_LIST : SUBTYPE_MARK
2391 -- [:= DEFAULT_EXPRESSION]
2392 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
2393 -- [:= DEFAULT_EXPRESSION]
2395 -- Although the syntax allows multiple identifiers in the list, the
2396 -- semantics is as though successive specifications were given with
2397 -- identical type definition and expression components. To simplify
2398 -- semantic processing, the parser represents a multiple declaration
2399 -- case as a sequence of single specifications, using the More_Ids and
2400 -- Prev_Ids flags to preserve the original source form as described
2401 -- in the section on "Handling of Defining Identifier Lists".
2403 -- N_Discriminant_Specification
2404 -- Sloc points to first identifier
2405 -- Defining_Identifier (Node1)
2406 -- Discriminant_Type (Node5) subtype mark or
2407 -- access parameter definition
2408 -- Expression (Node3) (set to Empty if no default expression)
2409 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2410 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2412 -----------------------------
2413 -- 3.7 Default Expression --
2414 -----------------------------
2416 -- DEFAULT_EXPRESSION ::= EXPRESSION
2418 ------------------------------------
2419 -- 3.7.1 Discriminant Constraint --
2420 ------------------------------------
2422 -- DISCRIMINANT_CONSTRAINT ::=
2423 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
2425 -- It is not in general possible to distinguish between discriminant
2426 -- constraints and index constraints at parse time, since a simple
2427 -- name could be either the subtype mark of a discrete range, or an
2428 -- expression in a discriminant association with no name. Either
2429 -- entry appears simply as the name, and the semantic parse must
2430 -- distinguish between the two cases. Thus we use a common tree
2431 -- node format for both of these constraint types.
2433 -- N_Index_Or_Discriminant_Constraint
2434 -- Sloc points to left paren
2435 -- Constraints (List1) points to list of discrete ranges or
2436 -- discriminant associations
2438 -------------------------------------
2439 -- 3.7.1 Discriminant Association --
2440 -------------------------------------
2442 -- DISCRIMINANT_ASSOCIATION ::=
2443 -- [discriminant_SELECTOR_NAME
2444 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
2446 -- Note: a discriminant association that has no selector name list
2447 -- appears directly as an expression in the tree.
2449 -- N_Discriminant_Association
2450 -- Sloc points to first token of discriminant association
2451 -- Selector_Names (List1) (always non-empty, since if no selector
2452 -- names are present, this node is not used, see comment above)
2453 -- Expression (Node3)
2455 ---------------------------------
2456 -- 3.8 Record Type Definition --
2457 ---------------------------------
2459 -- RECORD_TYPE_DEFINITION ::=
2460 -- [[abstract] tagged] [limited] RECORD_DEFINITION
2462 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
2464 -- There is no explicit node in the tree for a record type definition.
2465 -- Instead the flags for Tagged_Present and Limited_Present appear in
2466 -- the N_Record_Definition node for a record definition appearing in
2467 -- the context of a record type definition.
2469 ----------------------------
2470 -- 3.8 Record Definition --
2471 ----------------------------
2473 -- RECORD_DEFINITION ::=
2479 -- Note: the Abstract_Present, Tagged_Present and Limited_Present
2480 -- flags appear only for a record definition appearing in a record
2483 -- Note: the NULL RECORD case is not permitted in Ada 83
2485 -- N_Record_Definition
2486 -- Sloc points to RECORD or NULL
2487 -- End_Label (Node4) (set to Empty if internally generated record)
2488 -- Abstract_Present (Flag4)
2489 -- Tagged_Present (Flag15)
2490 -- Limited_Present (Flag17)
2491 -- Component_List (Node1) empty in null record case
2492 -- Null_Present (Flag13) set in null record case
2494 -------------------------
2495 -- 3.8 Component List --
2496 -------------------------
2498 -- COMPONENT_LIST ::=
2499 -- COMPONENT_ITEM {COMPONENT_ITEM}
2500 -- | {COMPONENT_ITEM} VARIANT_PART
2504 -- Sloc points to first token of component list
2505 -- Component_Items (List3)
2506 -- Variant_Part (Node4) (set to Empty if no variant part)
2507 -- Null_Present (Flag13)
2509 -------------------------
2510 -- 3.8 Component Item --
2511 -------------------------
2513 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
2515 -- Note: A component item can also be a pragma, and in the tree
2516 -- that is obtained after semantic processing, a component item
2517 -- can be an N_Null node resulting from a non-recognized pragma.
2519 --------------------------------
2520 -- 3.8 Component Declaration --
2521 --------------------------------
2523 -- COMPONENT_DECLARATION ::=
2524 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
2525 -- [:= DEFAULT_EXPRESSION]
2527 -- Note: although the syntax does not permit a component definition to
2528 -- be an anonymous array (and the parser will diagnose such an attempt
2529 -- with an appropriate message), it is possible for anonymous arrays
2530 -- to appear as component definitions. The semantics and back end handle
2531 -- this case properly, and the expander in fact generates such cases.
2533 -- Although the syntax allows multiple identifiers in the list, the
2534 -- semantics is as though successive declarations were given with the
2535 -- same component definition and expression components. To simplify
2536 -- semantic processing, the parser represents a multiple declaration
2537 -- case as a sequence of single declarations, using the More_Ids and
2538 -- Prev_Ids flags to preserve the original source form as described
2539 -- in the section on "Handling of Defining Identifier Lists".
2541 -- N_Component_Declaration
2542 -- Sloc points to first identifier
2543 -- Defining_Identifier (Node1)
2544 -- Component_Definition (Node4)
2545 -- Expression (Node3) (set to Empty if no default expression)
2546 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2547 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2549 -------------------------
2550 -- 3.8.1 Variant Part --
2551 -------------------------
2554 -- case discriminant_DIRECT_NAME is
2559 -- Note: the variants list can contain pragmas as well as variants.
2560 -- In a properly formed program there is at least one variant.
2563 -- Sloc points to CASE
2567 --------------------
2569 --------------------
2572 -- when DISCRETE_CHOICE_LIST =>
2576 -- Sloc points to WHEN
2577 -- Discrete_Choices (List4)
2578 -- Component_List (Node1)
2579 -- Enclosing_Variant (Node2-Sem)
2580 -- Present_Expr (Uint3-Sem)
2581 -- Dcheck_Function (Node5-Sem)
2583 ---------------------------------
2584 -- 3.8.1 Discrete Choice List --
2585 ---------------------------------
2587 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
2589 ----------------------------
2590 -- 3.8.1 Discrete Choice --
2591 ----------------------------
2593 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
2595 -- Note: in Ada 83 mode, the expression must be a simple expression
2597 -- The only choice that appears explicitly is the OTHERS choice, as
2598 -- defined here. Other cases of discrete choice (expression and
2599 -- discrete range) appear directly. This production is also used
2600 -- for the OTHERS possibility of an exception choice.
2602 -- Note: in accordance with the syntax, the parser does not check that
2603 -- OTHERS appears at the end on its own in a choice list context. This
2604 -- is a semantic check.
2607 -- Sloc points to OTHERS
2608 -- Others_Discrete_Choices (List1-Sem)
2609 -- All_Others (Flag11-Sem)
2611 ----------------------------------
2612 -- 3.9.1 Record Extension Part --
2613 ----------------------------------
2615 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
2617 -- Note: record extension parts are not permitted in Ada 83 mode
2619 ----------------------------------
2620 -- 3.10 Access Type Definition --
2621 ----------------------------------
2623 -- ACCESS_TYPE_DEFINITION ::=
2624 -- ACCESS_TO_OBJECT_DEFINITION
2625 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
2627 ---------------------------------------
2628 -- 3.10 Access To Object Definition --
2629 ---------------------------------------
2631 -- ACCESS_TO_OBJECT_DEFINITION ::=
2632 -- access [GENERAL_ACCESS_MODIFIER] SUBTYPE_INDICATION
2634 -- N_Access_To_Object_Definition
2635 -- Sloc points to ACCESS
2636 -- All_Present (Flag15)
2637 -- Subtype_Indication (Node5)
2638 -- Constant_Present (Flag17)
2640 -----------------------------------
2641 -- 3.10 General Access Modifier --
2642 -----------------------------------
2644 -- GENERAL_ACCESS_MODIFIER ::= all | constant
2646 -- Note: general access modifiers are not permitted in Ada 83 mode
2648 -- There is no explicit node in the tree for general access modifier.
2649 -- Instead the All_Present or Constant_Present flags are set in the
2652 -------------------------------------------
2653 -- 3.10 Access To Subprogram Definition --
2654 -------------------------------------------
2656 -- ACCESS_TO_SUBPROGRAM_DEFINITION
2657 -- access [protected] procedure PARAMETER_PROFILE
2658 -- | access [protected] function PARAMETER_AND_RESULT_PROFILE
2660 -- Note: access to subprograms are not permitted in Ada 83 mode
2662 -- N_Access_Function_Definition
2663 -- Sloc points to ACCESS
2664 -- Protected_Present (Flag15)
2665 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2666 -- Subtype_Mark (Node4) result subtype
2668 -- N_Access_Procedure_Definition
2669 -- Sloc points to ACCESS
2670 -- Protected_Present (Flag15)
2671 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2673 -----------------------------
2674 -- 3.10 Access Definition --
2675 -----------------------------
2677 -- ACCESS_DEFINITION ::= access SUBTYPE_MARK
2679 -- N_Access_Definition
2680 -- Sloc points to ACCESS
2681 -- Subtype_Mark (Node4)
2683 -----------------------------------------
2684 -- 3.10.1 Incomplete Type Declaration --
2685 -----------------------------------------
2687 -- INCOMPLETE_TYPE_DECLARATION ::=
2688 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART];
2690 -- N_Incomplete_Type_Declaration
2691 -- Sloc points to TYPE
2692 -- Defining_Identifier (Node1)
2693 -- Discriminant_Specifications (List4) (set to No_List if no
2694 -- discriminant part, or if the discriminant part is an
2695 -- unknown discriminant part)
2696 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
2698 ----------------------------
2699 -- 3.11 Declarative Part --
2700 ----------------------------
2702 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
2704 -- Note: although the parser enforces the syntactic requirement that
2705 -- a declarative part can contain only declarations, the semantic
2706 -- processing may add statements to the list of actions in a
2707 -- declarative part, so the code generator should be prepared
2708 -- to accept a statement in this position.
2710 ----------------------------
2711 -- 3.11 Declarative Item --
2712 ----------------------------
2714 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
2716 ----------------------------------
2717 -- 3.11 Basic Declarative Item --
2718 ----------------------------------
2720 -- BASIC_DECLARATIVE_ITEM ::=
2721 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
2727 -- BODY ::= PROPER_BODY | BODY_STUB
2729 -----------------------
2730 -- 3.11 Proper Body --
2731 -----------------------
2734 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
2741 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
2742 -- | INDEXED_COMPONENT | SLICE
2743 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
2744 -- | TYPE_CONVERSION | FUNCTION_CALL
2745 -- | CHARACTER_LITERAL
2747 ----------------------
2748 -- 4.1 Direct Name --
2749 ----------------------
2751 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
2757 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
2759 -------------------------------
2760 -- 4.1 Explicit Dereference --
2761 -------------------------------
2763 -- EXPLICIT_DEREFERENCE ::= NAME . all
2765 -- N_Explicit_Dereference
2766 -- Sloc points to ALL
2768 -- plus fields for expression
2770 -------------------------------
2771 -- 4.1 Implicit Dereference --
2772 -------------------------------
2774 -- IMPLICIT_DEREFERENCE ::= NAME
2776 ------------------------------
2777 -- 4.1.1 Indexed Component --
2778 ------------------------------
2780 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
2782 -- Note: the parser may generate this node in some situations where it
2783 -- should be a function call. The semantic pass must correct this
2784 -- misidentification (which is inevitable at the parser level).
2786 -- N_Indexed_Component
2787 -- Sloc contains a copy of the Sloc value of the Prefix
2789 -- Expressions (List1)
2790 -- plus fields for expression
2792 -- Note: if any of the subscripts requires a range check, then the
2793 -- Do_Range_Check flag is set on the corresponding expression, with
2794 -- the index type being determined from the type of the Prefix, which
2795 -- references the array being indexed.
2797 -- Note: in a fully analyzed and expanded indexed component node, and
2798 -- hence in any such node that gigi sees, if the prefix is an access
2799 -- type, then an explicit dereference operation has been inserted.
2805 -- SLICE ::= PREFIX (DISCRETE_RANGE)
2807 -- Note: an implicit subtype is created to describe the resulting
2808 -- type, so that the bounds of this type are the bounds of the slice.
2811 -- Sloc points to first token of prefix
2813 -- Discrete_Range (Node4)
2814 -- plus fields for expression
2816 -------------------------------
2817 -- 4.1.3 Selected Component --
2818 -------------------------------
2820 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
2822 -- Note: selected components that are semantically expanded names get
2823 -- changed during semantic processing into the separate N_Expanded_Name
2824 -- node. See description of this node in the section on semantic nodes.
2826 -- N_Selected_Component
2827 -- Sloc points to period
2829 -- Selector_Name (Node2)
2830 -- Associated_Node (Node4-Sem)
2831 -- Do_Discriminant_Check (Flag13-Sem)
2832 -- Is_In_Discriminant_Check (Flag11-Sem)
2833 -- plus fields for expression
2835 --------------------------
2836 -- 4.1.3 Selector Name --
2837 --------------------------
2839 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
2841 --------------------------------
2842 -- 4.1.4 Attribute Reference --
2843 --------------------------------
2845 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
2847 -- Note: the syntax is quite ambiguous at this point. Consider:
2849 -- A'Length (X) X is part of the attribute designator
2850 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
2851 -- A'Class (X) X is the expression of a type conversion
2853 -- It would be possible for the parser to distinguish these cases
2854 -- by looking at the attribute identifier. However, that would mean
2855 -- more work in introducing new implementation defined attributes,
2856 -- and also it would mean that special processing for attributes
2857 -- would be scattered around, instead of being centralized in the
2858 -- semantic routine that handles an N_Attribute_Reference node.
2859 -- Consequently, the parser in all the above cases stores the
2860 -- expression (X in these examples) as a single element list in
2861 -- in the Expressions field of the N_Attribute_Reference node.
2863 -- Similarly, for attributes like Max which take two arguments,
2864 -- we store the two arguments as a two element list in the
2865 -- Expressions field. Of course it is clear at parse time that
2866 -- this case is really a function call with an attribute as the
2867 -- prefix, but it turns out to be convenient to handle the two
2868 -- argument case in a similar manner to the one argument case,
2869 -- and indeed in general the parser will accept any number of
2870 -- expressions in this position and store them as a list in the
2871 -- attribute reference node. This allows for future addition of
2872 -- attributes that take more than two arguments.
2874 -- Note: named associates are not permitted in function calls where
2875 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
2876 -- to skip the normal subprogram argument processing.
2878 -- Note: for the attributes whose designators are technically keywords,
2879 -- i.e. digits, access, delta, range, the Attribute_Name field contains
2880 -- the corresponding name, even though no identifier is involved.
2882 -- The flag OK_For_Stream is used in generated code to indicate that
2883 -- a stream attribute is permissible for a limited type, and results
2884 -- in the use of the stream attribute for the underlying full type,
2885 -- or in the case of a protected type, the components (including any
2886 -- disriminants) are merely streamed in order.
2888 -- See Exp_Attr for a complete description of which attributes are
2889 -- passed onto Gigi, and which are handled entirely by the front end.
2891 -- Gigi restriction: For the Pos attribute, the prefix cannot be
2892 -- a non-standard enumeration type or a nonzero/zero semantics
2893 -- boolean type, so the value is simply the stored representation.
2895 -- Note: In generated code, the Address and Unrestricted_Access
2896 -- attributes can be applied to any expression, and the meaning is
2897 -- to create an object containing the value (the object is in the
2898 -- current stack frame), and pass the address of this value. If the
2899 -- Must_Be_Byte_Aligned flag is set, then the object whose address
2900 -- is taken must be on a byte (storage unit) boundary, and if it is
2901 -- not (or may not be), then the generated code must create a copy
2902 -- that is byte aligned, and pass the address of this copy.
2904 -- N_Attribute_Reference
2905 -- Sloc points to apostrophe
2907 -- Attribute_Name (Name2) identifier name from attribute designator
2908 -- Expressions (List1) (set to No_List if no associated expressions)
2909 -- Entity (Node4-Sem) used if the attribute yields a type
2910 -- Associated_Node (Node4-Sem)
2911 -- Do_Overflow_Check (Flag17-Sem)
2912 -- Redundant_Use (Flag13-Sem)
2913 -- OK_For_Stream (Flag4-Sem)
2914 -- Must_Be_Byte_Aligned (Flag14)
2915 -- plus fields for expression
2917 ---------------------------------
2918 -- 4.1.4 Attribute Designator --
2919 ---------------------------------
2921 -- ATTRIBUTE_DESIGNATOR ::=
2922 -- IDENTIFIER [(static_EXPRESSION)]
2923 -- | access | delta | digits
2925 -- There is no explicit node in the tree for an attribute designator.
2926 -- Instead the Attribute_Name and Expressions fields of the parent
2927 -- node (N_Attribute_Reference node) hold the information.
2929 -- Note: if ACCESS, DELTA or DIGITS appears in an attribute
2930 -- designator, then they are treated as identifiers internally
2931 -- rather than the keywords of the same name.
2933 --------------------------------------
2934 -- 4.1.4 Range Attribute Reference --
2935 --------------------------------------
2937 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
2939 -- A range attribute reference is represented in the tree using the
2940 -- normal N_Attribute_Reference node.
2942 ---------------------------------------
2943 -- 4.1.4 Range Attribute Designator --
2944 ---------------------------------------
2946 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
2948 -- A range attribute designator is represented in the tree using the
2949 -- normal N_Attribute_Reference node.
2951 --------------------
2953 --------------------
2956 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
2958 -----------------------------
2959 -- 4.3.1 Record Aggregate --
2960 -----------------------------
2962 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
2965 -- Sloc points to left parenthesis
2966 -- Expressions (List1) (set to No_List if none or null record case)
2967 -- Component_Associations (List2) (set to No_List if none)
2968 -- Null_Record_Present (Flag17)
2969 -- Aggregate_Bounds (Node3-Sem)
2970 -- Associated_Node (Node4-Sem)
2971 -- Static_Processing_OK (Flag4-Sem)
2972 -- Compile_Time_Known_Aggregate (Flag18-Sem)
2973 -- Expansion_Delayed (Flag11-Sem)
2974 -- plus fields for expression
2976 -- Note: this structure is used for both record and array aggregates
2977 -- since the two cases are not separable by the parser. The parser
2978 -- makes no attempt to enforce consistency here, so it is up to the
2979 -- semantic phase to make sure that the aggregate is consistent (i.e.
2980 -- that it is not a "half-and-half" case that mixes record and array
2981 -- syntax. In particular, for a record aggregate, the expressions
2982 -- field will be set if there are positional associations.
2984 -- Note: gigi/gcc can handle array aggregates correctly providing that
2985 -- they are entirely positional, and the array subtype involved has a
2986 -- known at compile time length and is not bit packed, or a convention
2987 -- Fortran array with more than one dimension. If these conditions
2988 -- are not met, then the front end must translate the aggregate into
2989 -- an appropriate set of assignments into a temporary.
2991 -- Note: for the record aggregate case, gigi/gcc can handle all cases
2992 -- of record aggregates, including those for packed, and rep-claused
2993 -- records, and also variant records, providing that there are no
2994 -- variable length fields whose size is not known at runtime, and
2995 -- providing that the aggregate is presented in fully named form.
2997 ----------------------------------------------
2998 -- 4.3.1 Record Component Association List --
2999 ----------------------------------------------
3001 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
3002 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
3005 -- There is no explicit node in the tree for a record component
3006 -- association list. Instead the Null_Record_Present flag is set in
3007 -- the parent node for the NULL RECORD case.
3009 ------------------------------------------------------
3010 -- 4.3.1 Record Component Association (also 4.3.3) --
3011 ------------------------------------------------------
3013 -- RECORD_COMPONENT_ASSOCIATION ::=
3014 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
3016 -- N_Component_Association
3017 -- Sloc points to first selector name
3019 -- Loop_Actions (List2-Sem)
3020 -- Expression (Node3)
3021 -- Box_Present (Flag15)
3023 -- Note: this structure is used for both record component associations
3024 -- and array component associations, since the two cases aren't always
3025 -- separable by the parser. The choices list may represent either a
3026 -- list of selector names in the record aggregate case, or a list of
3027 -- discrete choices in the array aggregate case or an N_Others_Choice
3028 -- node (which appears as a singleton list). Box_Present gives support
3029 -- to Ada 0Y (AI-287).
3031 ------------------------------------
3032 -- 4.3.1 Commponent Choice List --
3033 ------------------------------------
3035 -- COMPONENT_CHOICE_LIST ::=
3036 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
3039 -- The entries of a component choice list appear in the Choices list
3040 -- of the associated N_Component_Association, as either selector
3041 -- names, or as an N_Others_Choice node.
3043 --------------------------------
3044 -- 4.3.2 Extension Aggregate --
3045 --------------------------------
3047 -- EXTENSION_AGGREGATE ::=
3048 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
3050 -- Note: extension aggregates are not permitted in Ada 83 mode
3052 -- N_Extension_Aggregate
3053 -- Sloc points to left parenthesis
3054 -- Ancestor_Part (Node3)
3055 -- Associated_Node (Node4-Sem)
3056 -- Expressions (List1) (set to No_List if none or null record case)
3057 -- Component_Associations (List2) (set to No_List if none)
3058 -- Null_Record_Present (Flag17)
3059 -- Expansion_Delayed (Flag11-Sem)
3060 -- plus fields for expression
3062 --------------------------
3063 -- 4.3.2 Ancestor Part --
3064 --------------------------
3066 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
3068 ----------------------------
3069 -- 4.3.3 Array Aggregate --
3070 ----------------------------
3072 -- ARRAY_AGGREGATE ::=
3073 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
3075 ---------------------------------------
3076 -- 4.3.3 Positional Array Aggregate --
3077 ---------------------------------------
3079 -- POSITIONAL_ARRAY_AGGREGATE ::=
3080 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
3081 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
3083 -- See Record_Aggregate (4.3.1) for node structure
3085 ----------------------------------
3086 -- 4.3.3 Named Array Aggregate --
3087 ----------------------------------
3089 -- NAMED_ARRAY_AGGREGATE ::=
3090 -- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
3092 -- See Record_Aggregate (4.3.1) for node structure
3094 ----------------------------------------
3095 -- 4.3.3 Array Component Association --
3096 ----------------------------------------
3098 -- ARRAY_COMPONENT_ASSOCIATION ::=
3099 -- DISCRETE_CHOICE_LIST => EXPRESSION
3101 -- See Record_Component_Association (4.3.1) for node structure
3103 --------------------------------------------------
3104 -- 4.4 Expression/Relation/Term/Factor/Primary --
3105 --------------------------------------------------
3108 -- RELATION {and RELATION} | RELATION {and then RELATION}
3109 -- | RELATION {or RELATION} | RELATION {or else RELATION}
3110 -- | RELATION {xor RELATION}
3113 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
3114 -- | SIMPLE_EXPRESSION [not] in RANGE
3115 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3117 -- SIMPLE_EXPRESSION ::=
3118 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
3120 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
3122 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
3124 -- No nodes are generated for any of these constructs. Instead, the
3125 -- node for the operator appears directly. When we refer to an
3126 -- expression in this description, we mean any of the possible
3127 -- consistuent components of an expression (e.g. identifier is
3128 -- an example of an expression).
3135 -- NUMERIC_LITERAL | null
3136 -- | STRING_LITERAL | AGGREGATE
3137 -- | NAME | QUALIFIED_EXPRESSION
3138 -- | ALLOCATOR | (EXPRESSION)
3140 -- Usually there is no explicit node in the tree for primary. Instead
3141 -- the constituent (e.g. AGGREGATE) appears directly. There are two
3142 -- exceptions. First, there is an explicit node for a null primary.
3145 -- Sloc points to NULL
3146 -- plus fields for expression
3148 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
3149 -- that the parser keep track of which subexpressions are enclosed
3150 -- in parentheses, and how many levels of parentheses are used. This
3151 -- information is required for optimization purposes, and also for
3152 -- some semantic checks (e.g. (((1))) in a procedure spec does not
3153 -- conform with ((((1)))) in the body).
3155 -- The parentheses are recorded by keeping a Paren_Count field in every
3156 -- subexpression node (it is actually present in all nodes, but only
3157 -- used in subexpression nodes). This count records the number of
3158 -- levels of parentheses. If the number of levels in the source exceeds
3159 -- the maximum accomodated by this count, then the count is simply left
3160 -- at the maximum value. This means that there are some pathalogical
3161 -- cases of failure to detect conformance failures (e.g. an expression
3162 -- with 500 levels of parens will conform with one with 501 levels),
3163 -- but we do not need to lose sleep over this.
3165 -- Historical note: in versions of GNAT prior to 1.75, there was a node
3166 -- type N_Parenthesized_Expression used to accurately record unlimited
3167 -- numbers of levels of parentheses. However, it turned out to be a
3168 -- real nuisance to have to take into account the possible presence of
3169 -- this node during semantic analysis, since basically parentheses have
3170 -- zero relevance to semantic analysis.
3172 -- Note: the level of parentheses always present in things like
3173 -- aggregates does not count, only the parentheses in the primary
3174 -- (EXPRESSION) affect the setting of the Paren_Count field.
3176 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
3177 -- treated as though it were Empty) if No_Initialization is set True.
3179 --------------------------------------
3180 -- 4.5 Short Circuit Control Forms --
3181 --------------------------------------
3184 -- RELATION {and then RELATION} | RELATION {or else RELATION}
3186 -- Gigi restriction: For both these control forms, the operand and
3187 -- result types are always Standard.Boolean. The expander inserts the
3188 -- required conversion operations where needed to ensure this is the
3192 -- Sloc points to AND of AND THEN
3193 -- Left_Opnd (Node2)
3194 -- Right_Opnd (Node3)
3195 -- Actions (List1-Sem)
3196 -- plus fields for expression
3199 -- Sloc points to OR of OR ELSE
3200 -- Left_Opnd (Node2)
3201 -- Right_Opnd (Node3)
3202 -- Actions (List1-Sem)
3203 -- plus fields for expression
3205 -- Note: The Actions field is used to hold actions associated with
3206 -- the right hand operand. These have to be treated specially since
3207 -- they are not unconditionally executed. See Insert_Actions for a
3208 -- more detailed description of how these actions are handled.
3210 ---------------------------
3211 -- 4.5 Membership Tests --
3212 ---------------------------
3215 -- SIMPLE_EXPRESSION [not] in RANGE
3216 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3218 -- Note: although the grammar above allows only a range or a
3219 -- subtype mark, the parser in fact will accept any simple
3220 -- expression in place of a subtype mark. This means that the
3221 -- semantic analyzer must be prepared to deal with, and diagnose
3222 -- a simple expression other than a name for the right operand.
3223 -- This simplifies error recovery in the parser.
3226 -- Sloc points to IN
3227 -- Left_Opnd (Node2)
3228 -- Right_Opnd (Node3)
3229 -- plus fields for expression
3232 -- Sloc points to NOT of NOT IN
3233 -- Left_Opnd (Node2)
3234 -- Right_Opnd (Node3)
3235 -- plus fields for expression
3237 --------------------
3239 --------------------
3241 -- LOGICAL_OPERATOR ::= and | or | xor
3243 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
3245 -- BINARY_ADDING_OPERATOR ::= + | - | &
3247 -- UNARY_ADDING_OPERATOR ::= + | -
3249 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
3251 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
3253 -- Sprint syntax if Treat_Fixed_As_Integer is set:
3260 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
3261 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
3262 -- All handling of smalls for multiplication and division is handled
3263 -- by the front end (mod and rem result only from expansion). Gigi
3264 -- thus never needs to worry about small values (for other operators
3265 -- operating on fixed-point, e.g. addition, the small value does not
3266 -- have any semantic effect anyway, these are always integer operations.
3268 -- Gigi restriction: For all operators taking Boolean operands, the
3269 -- type is always Standard.Boolean. The expander inserts the required
3270 -- conversion operations where needed to ensure this is the case.
3273 -- Sloc points to AND
3274 -- Do_Length_Check (Flag4-Sem)
3275 -- plus fields for binary operator
3276 -- plus fields for expression
3279 -- Sloc points to OR
3280 -- Do_Length_Check (Flag4-Sem)
3281 -- plus fields for binary operator
3282 -- plus fields for expression
3285 -- Sloc points to XOR
3286 -- Do_Length_Check (Flag4-Sem)
3287 -- plus fields for binary operator
3288 -- plus fields for expression
3292 -- plus fields for binary operator
3293 -- plus fields for expression
3296 -- Sloc points to /=
3297 -- plus fields for binary operator
3298 -- plus fields for expression
3302 -- plus fields for binary operator
3303 -- plus fields for expression
3306 -- Sloc points to <=
3307 -- plus fields for binary operator
3308 -- plus fields for expression
3312 -- plus fields for binary operator
3313 -- plus fields for expression
3316 -- Sloc points to >=
3317 -- plus fields for binary operator
3318 -- plus fields for expression
3321 -- Sloc points to + (binary)
3322 -- plus fields for binary operator
3323 -- plus fields for expression
3326 -- Sloc points to - (binary)
3327 -- plus fields for binary operator
3328 -- plus fields for expression
3332 -- Is_Component_Left_Opnd (Flag13-Sem)
3333 -- Is_Component_Right_Opnd (Flag14-Sem)
3334 -- plus fields for binary operator
3335 -- plus fields for expression
3339 -- Treat_Fixed_As_Integer (Flag14-Sem)
3340 -- Rounded_Result (Flag18-Sem)
3341 -- plus fields for binary operator
3342 -- plus fields for expression
3346 -- Treat_Fixed_As_Integer (Flag14-Sem)
3347 -- Do_Division_Check (Flag13-Sem)
3348 -- Rounded_Result (Flag18-Sem)
3349 -- plus fields for binary operator
3350 -- plus fields for expression
3353 -- Sloc points to MOD
3354 -- Treat_Fixed_As_Integer (Flag14-Sem)
3355 -- Do_Division_Check (Flag13-Sem)
3356 -- plus fields for binary operator
3357 -- plus fields for expression
3360 -- Sloc points to REM
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 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
3368 -- Sloc points to **
3369 -- plus fields for binary operator
3370 -- plus fields for expression
3373 -- Sloc points to + (unary)
3374 -- plus fields for unary operator
3375 -- plus fields for expression
3378 -- Sloc points to - (unary)
3379 -- plus fields for unary operator
3380 -- plus fields for expression
3383 -- Sloc points to ABS
3384 -- plus fields for unary operator
3385 -- plus fields for expression
3388 -- Sloc points to NOT
3389 -- plus fields for unary operator
3390 -- plus fields for expression
3392 -- See also shift operators in section B.2
3394 -- Note on fixed-point operations passed to Gigi: For adding operators,
3395 -- the semantics is to treat these simply as integer operations, with
3396 -- the small values being ignored (the bounds are already stored in
3397 -- units of small, so that constraint checking works as usual). For the
3398 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
3399 -- point operands if the Treat_Fixed_As_Integer flag is set and will
3400 -- thus treat these nodes in identical manner, ignoring small values.
3402 --------------------------
3403 -- 4.6 Type Conversion --
3404 --------------------------
3406 -- TYPE_CONVERSION ::=
3407 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
3409 -- In the (NAME) case, the name is stored as the expression
3411 -- Note: the parser never generates a type conversion node, since it
3412 -- looks like an indexed component which is generated by preference.
3413 -- The semantic pass must correct this misidentification.
3415 -- Gigi handles conversions that involve no change in the root type,
3416 -- and also all conversions from integer to floating-point types.
3417 -- Conversions from floating-point to integer are only handled in
3418 -- the case where Float_Truncate flag set. Other conversions from
3419 -- floating-point to integer (involving rounding) and all conversions
3420 -- involving fixed-point types are handled by the expander.
3422 -- Sprint syntax if Float_Truncate set: X^(Y)
3423 -- Sprint syntax if Conversion_OK set X?(Y)
3424 -- Sprint syntax if both flags set X?^(Y)
3426 -- Note: If either the operand or result type is fixed-point, Gigi will
3427 -- only see a type conversion node with Conversion_OK set. The front end
3428 -- takes care of all handling of small's for fixed-point conversions.
3430 -- N_Type_Conversion
3431 -- Sloc points to first token of subtype mark
3432 -- Subtype_Mark (Node4)
3433 -- Expression (Node3)
3434 -- Do_Tag_Check (Flag13-Sem)
3435 -- Do_Length_Check (Flag4-Sem)
3436 -- Do_Overflow_Check (Flag17-Sem)
3437 -- Float_Truncate (Flag11-Sem)
3438 -- Rounded_Result (Flag18-Sem)
3439 -- Conversion_OK (Flag14-Sem)
3440 -- plus fields for expression
3442 -- Note: if a range check is required, then the Do_Range_Check flag
3443 -- is set in the Expression with the check being done against the
3444 -- target type range (after the base type conversion, if any).
3446 -------------------------------
3447 -- 4.7 Qualified Expression --
3448 -------------------------------
3450 -- QUALIFIED_EXPRESSION ::=
3451 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
3453 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
3454 -- the expression, so the Expression field of this node always points
3455 -- to a parenthesized expression in this case (i.e. Paren_Count will
3456 -- always be non-zero for the referenced expression if it is not an
3459 -- N_Qualified_Expression
3460 -- Sloc points to apostrophe
3461 -- Subtype_Mark (Node4)
3462 -- Expression (Node3) expression or aggregate
3463 -- plus fields for expression
3465 --------------------
3467 --------------------
3470 -- new SUBTYPE_INDICATION | new QUALIFIED_EXPRESSION
3472 -- Sprint syntax (when storage pool present)
3473 -- new xxx (storage_pool = pool)
3476 -- Sloc points to NEW
3477 -- Expression (Node3) subtype indication or qualified expression
3478 -- Storage_Pool (Node1-Sem)
3479 -- Procedure_To_Call (Node4-Sem)
3480 -- No_Initialization (Flag13-Sem)
3481 -- Do_Storage_Check (Flag17-Sem)
3482 -- plus fields for expression
3484 ---------------------------------
3485 -- 5.1 Sequence Of Statements --
3486 ---------------------------------
3488 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
3490 -- Note: Although the parser will not accept a declaration as a
3491 -- statement, the semantic analyzer may insert declarations (e.g.
3492 -- declarations of implicit types needed for execution of other
3493 -- statements) into a sequence of statements, so the code genmerator
3494 -- should be prepared to accept a declaration where a statement is
3495 -- expected. Note also that pragmas can appear as statements.
3497 --------------------
3499 --------------------
3502 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
3504 -- There is no explicit node in the tree for a statement. Instead, the
3505 -- individual statement appears directly. Labels are treated as a
3506 -- kind of statement, i.e. they are linked into a statement list at
3507 -- the point they appear, so the labeled statement appears following
3508 -- the label or labels in the statement list.
3510 ---------------------------
3511 -- 5.1 Simple Statement --
3512 ---------------------------
3514 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
3515 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
3516 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
3517 -- | RETURN_STATEMENT | ENTRY_CALL_STATEMENT
3518 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
3519 -- | ABORT_STATEMENT | RAISE_STATEMENT
3522 -----------------------------
3523 -- 5.1 Compound Statement --
3524 -----------------------------
3526 -- COMPOUND_STATEMENT ::=
3527 -- IF_STATEMENT | CASE_STATEMENT
3528 -- | LOOP_STATEMENT | BLOCK_STATEMENT
3529 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
3531 -------------------------
3532 -- 5.1 Null Statement --
3533 -------------------------
3535 -- NULL_STATEMENT ::= null;
3538 -- Sloc points to NULL
3544 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
3546 -- Note that the occurrence of a label is not a defining identifier,
3547 -- but rather a referencing occurrence. The defining occurrence is
3548 -- in the implicit label declaration which occurs in the innermost
3552 -- Sloc points to <<
3553 -- Identifier (Node1) direct name of statement identifier
3554 -- Exception_Junk (Flag11-Sem)
3556 -------------------------------
3557 -- 5.1 Statement Identifier --
3558 -------------------------------
3560 -- STATEMENT_INDENTIFIER ::= DIRECT_NAME
3562 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
3563 -- (not an OPERATOR_SYMBOL)
3565 -------------------------------
3566 -- 5.2 Assignment Statement --
3567 -------------------------------
3569 -- ASSIGNMENT_STATEMENT ::=
3570 -- variable_NAME := EXPRESSION;
3572 -- N_Assignment_Statement
3573 -- Sloc points to :=
3575 -- Expression (Node3)
3576 -- Do_Tag_Check (Flag13-Sem)
3577 -- Do_Length_Check (Flag4-Sem)
3578 -- Forwards_OK (Flag5-Sem)
3579 -- Backwards_OK (Flag6-Sem)
3580 -- No_Ctrl_Actions (Flag7-Sem)
3582 -- Note: if a range check is required, then the Do_Range_Check flag
3583 -- is set in the Expression (right hand side), with the check being
3584 -- done against the type of the Name (left hand side).
3586 -- Note: the back end places some restrictions on the form of the
3587 -- Expression field. If the object being assigned to is Atomic, then
3588 -- the Expression may not have the form of an aggregate (since this
3589 -- might cause the back end to generate separate assignments). It
3590 -- also cannot be a reference to an object marked as a true constant
3591 -- (Is_True_Constant flag set), where the object is itself initalized
3592 -- with an aggregate. If necessary the front end must generate an
3593 -- extra temporary (with Is_True_Constant set False), and initialize
3594 -- this temporary as required (the temporary itself is not atomic).
3596 -----------------------
3597 -- 5.3 If Statement --
3598 -----------------------
3601 -- if CONDITION then
3602 -- SEQUENCE_OF_STATEMENTS
3603 -- {elsif CONDITION then
3604 -- SEQUENCE_OF_STATEMENTS}
3606 -- SEQUENCE_OF_STATEMENTS]
3609 -- Gigi restriction: This expander ensures that the type of the
3610 -- Condition fields is always Standard.Boolean, even if the type
3611 -- in the source is some non-standard boolean type.
3614 -- Sloc points to IF
3615 -- Condition (Node1)
3616 -- Then_Statements (List2)
3617 -- Elsif_Parts (List3) (set to No_List if none present)
3618 -- Else_Statements (List4) (set to No_List if no else part present)
3619 -- End_Span (Uint5) (set to No_Uint if expander generated)
3622 -- Sloc points to ELSIF
3623 -- Condition (Node1)
3624 -- Then_Statements (List2)
3625 -- Condition_Actions (List3-Sem)
3627 --------------------
3629 --------------------
3631 -- CONDITION ::= boolean_EXPRESSION
3633 -------------------------
3634 -- 5.4 Case Statement --
3635 -------------------------
3637 -- CASE_STATEMENT ::=
3638 -- case EXPRESSION is
3639 -- CASE_STATEMENT_ALTERNATIVE
3640 -- {CASE_STATEMENT_ALTERNATIVE}
3643 -- Note: the Alternatives can contain pragmas. These only occur at
3644 -- the start of the list, since any pragmas occurring after the first
3645 -- alternative are absorbed into the corresponding statement sequence.
3648 -- Sloc points to CASE
3649 -- Expression (Node3)
3650 -- Alternatives (List4)
3651 -- End_Span (Uint5) (set to No_Uint if expander generated)
3653 -------------------------------------
3654 -- 5.4 Case Statement Alternative --
3655 -------------------------------------
3657 -- CASE_STATEMENT_ALTERNATIVE ::=
3658 -- when DISCRETE_CHOICE_LIST =>
3659 -- SEQUENCE_OF_STATEMENTS
3661 -- N_Case_Statement_Alternative
3662 -- Sloc points to WHEN
3663 -- Discrete_Choices (List4)
3664 -- Statements (List3)
3666 -------------------------
3667 -- 5.5 Loop Statement --
3668 -------------------------
3670 -- LOOP_STATEMENT ::=
3671 -- [loop_STATEMENT_IDENTIFIER :]
3672 -- [ITERATION_SCHEME] loop
3673 -- SEQUENCE_OF_STATEMENTS
3674 -- end loop [loop_IDENTIFIER];
3676 -- Note: The occurrence of a loop label is not a defining identifier
3677 -- but rather a referencing occurrence. The defining occurrence is in
3678 -- the implicit label declaration which occurs in the innermost
3681 -- Note: there is always a loop statement identifier present in
3682 -- the tree, even if none was given in the source. In the case where
3683 -- no loop identifier is given in the source, the parser creates
3684 -- a name of the form _Loop_n, where n is a decimal integer (the
3685 -- two underlines ensure that the loop names created in this manner
3686 -- do not conflict with any user defined identifiers), and the flag
3687 -- Has_Created_Identifier is set to True. The only exception to the
3688 -- rule that all loop statement nodes have identifiers occurs for
3689 -- loops constructed by the expander, and the semantic analyzer will
3690 -- create and supply dummy loop identifiers in these cases.
3693 -- Sloc points to LOOP
3694 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
3695 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
3696 -- Statements (List3)
3697 -- End_Label (Node4)
3698 -- Has_Created_Identifier (Flag15)
3699 -- Is_Null_Loop (Flag16)
3701 --------------------------
3702 -- 5.5 Iteration Scheme --
3703 --------------------------
3705 -- ITERATION_SCHEME ::=
3706 -- while CONDITION | for LOOP_PARAMETER_SPECIFICATION
3708 -- Gigi restriction: This expander ensures that the type of the
3709 -- Condition field is always Standard.Boolean, even if the type
3710 -- in the source is some non-standard boolean type.
3712 -- N_Iteration_Scheme
3713 -- Sloc points to WHILE or FOR
3714 -- Condition (Node1) (set to Empty if FOR case)
3715 -- Condition_Actions (List3-Sem)
3716 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
3718 ---------------------------------------
3719 -- 5.5 Loop parameter specification --
3720 ---------------------------------------
3722 -- LOOP_PARAMETER_SPECIFICATION ::=
3723 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
3725 -- N_Loop_Parameter_Specification
3726 -- Sloc points to first identifier
3727 -- Defining_Identifier (Node1)
3728 -- Reverse_Present (Flag15)
3729 -- Discrete_Subtype_Definition (Node4)
3731 --------------------------
3732 -- 5.6 Block Statement --
3733 --------------------------
3735 -- BLOCK_STATEMENT ::=
3736 -- [block_STATEMENT_IDENTIFIER:]
3738 -- DECLARATIVE_PART]
3740 -- HANDLED_SEQUENCE_OF_STATEMENTS
3741 -- end [block_IDENTIFIER];
3743 -- Note that the occurrence of a block identifier is not a defining
3744 -- identifier, but rather a referencing occurrence. The defining
3745 -- occurrence is in the implicit label declaration which occurs in
3746 -- the innermost enclosing block.
3748 -- Note: there is always a block statement identifier present in
3749 -- the tree, even if none was given in the source. In the case where
3750 -- no block identifier is given in the source, the parser creates
3751 -- a name of the form _Block_n, where n is a decimal integer (the
3752 -- two underlines ensure that the block names created in this manner
3753 -- do not conflict with any user defined identifiers), and the flag
3754 -- Has_Created_Identifier is set to True. The only exception to the
3755 -- rule that all loop statement nodes have identifiers occurs for
3756 -- blocks constructed by the expander, and the semantic analyzer
3757 -- creates and supplies dummy names for the blocks).
3759 -- N_Block_Statement
3760 -- Sloc points to DECLARE or BEGIN
3761 -- Identifier (Node1) block direct name (set to Empty if not present)
3762 -- Declarations (List2) (set to No_List if no DECLARE part)
3763 -- Handled_Statement_Sequence (Node4)
3764 -- Is_Task_Master (Flag5-Sem)
3765 -- Activation_Chain_Entity (Node3-Sem)
3766 -- Has_Created_Identifier (Flag15)
3767 -- Is_Task_Allocation_Block (Flag6)
3768 -- Is_Asynchronous_Call_Block (Flag7)
3770 -------------------------
3771 -- 5.7 Exit Statement --
3772 -------------------------
3774 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
3776 -- Gigi restriction: This expander ensures that the type of the
3777 -- Condition field is always Standard.Boolean, even if the type
3778 -- in the source is some non-standard boolean type.
3781 -- Sloc points to EXIT
3782 -- Name (Node2) (set to Empty if no loop name present)
3783 -- Condition (Node1) (set to Empty if no when part present)
3785 -------------------------
3786 -- 5.9 Goto Statement --
3787 -------------------------
3789 -- GOTO_STATEMENT ::= goto label_NAME;
3792 -- Sloc points to GOTO
3794 -- Exception_Junk (Flag11-Sem)
3796 ---------------------------------
3797 -- 6.1 Subprogram Declaration --
3798 ---------------------------------
3800 -- SUBPROGRAM_DECLARATION ::= SUBPROGRAM_SPECIFICATION;
3802 -- N_Subprogram_Declaration
3803 -- Sloc points to FUNCTION or PROCEDURE
3804 -- Specification (Node1)
3805 -- Body_To_Inline (Node3-Sem)
3806 -- Corresponding_Body (Node5-Sem)
3807 -- Parent_Spec (Node4-Sem)
3809 ------------------------------------------
3810 -- 6.1 Abstract Subprogram Declaration --
3811 ------------------------------------------
3813 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
3814 -- SUBPROGRAM_SPECIFICATION is abstract;
3816 -- N_Abstract_Subprogram_Declaration
3817 -- Sloc points to ABSTRACT
3818 -- Specification (Node1)
3820 -----------------------------------
3821 -- 6.1 Subprogram Specification --
3822 -----------------------------------
3824 -- SUBPROGRAM_SPECIFICATION ::=
3825 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
3826 -- | function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
3828 -- Note: there are no separate nodes for the profiles, instead the
3829 -- information appears directly in the following nodes.
3831 -- N_Function_Specification
3832 -- Sloc points to FUNCTION
3833 -- Defining_Unit_Name (Node1) (the designator)
3834 -- Elaboration_Boolean (Node2-Sem)
3835 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3836 -- Subtype_Mark (Node4) for return type
3837 -- Generic_Parent (Node5-Sem)
3839 -- N_Procedure_Specification
3840 -- Sloc points to PROCEDURE
3841 -- Defining_Unit_Name (Node1)
3842 -- Elaboration_Boolean (Node2-Sem)
3843 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3844 -- Generic_Parent (Node5-Sem)
3846 ---------------------
3847 -- 6.1 Designator --
3848 ---------------------
3851 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
3853 -- Designators that are simply identifiers or operator symbols appear
3854 -- directly in the tree in this form. The following node is used only
3855 -- in the case where the designator has a parent unit name component.
3858 -- Sloc points to period
3859 -- Name (Node2) holds the parent unit name. Note that this is always
3860 -- non-Empty, since this node is only used for the case where a
3861 -- parent library unit package name is present.
3862 -- Identifier (Node1)
3864 -- Note that the identifier can also be an operator symbol here.
3866 ------------------------------
3867 -- 6.1 Defining Designator --
3868 ------------------------------
3870 -- DEFINING_DESIGNATOR ::=
3871 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
3873 -------------------------------------
3874 -- 6.1 Defining Program Unit Name --
3875 -------------------------------------
3877 -- DEFINING_PROGRAM_UNIT_NAME ::=
3878 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
3880 -- The parent unit name is present only in the case of a child unit
3881 -- name (permissible only for Ada 95 for a library level unit, i.e.
3882 -- a unit at scope level one). If no such name is present, the defining
3883 -- program unit name is represented simply as the defining identifier.
3884 -- In the child unit case, the following node is used to represent the
3887 -- N_Defining_Program_Unit_Name
3888 -- Sloc points to period
3889 -- Name (Node2) holds the parent unit name. Note that this is always
3890 -- non-Empty, since this node is only used for the case where a
3891 -- parent unit name is present.
3892 -- Defining_Identifier (Node1)
3894 --------------------------
3895 -- 6.1 Operator Symbol --
3896 --------------------------
3898 -- OPERATOR_SYMBOL ::= STRING_LITERAL
3900 -- Note: the fields of the N_Operator_Symbol node are laid out to
3901 -- match the corresponding fields of an N_Character_Literal node. This
3902 -- allows easy conversion of the operator symbol node into a character
3903 -- literal node in the case where a string constant of the form of an
3904 -- operator symbol is scanned out as such, but turns out semantically
3905 -- to be a string literal that is not an operator. For details see
3906 -- Sinfo.CN.Change_Operator_Symbol_To_String_Literal.
3908 -- N_Operator_Symbol
3909 -- Sloc points to literal
3910 -- Chars (Name1) contains the Name_Id for the operator symbol
3911 -- Strval (Str3) Id of string value. This is used if the operator
3912 -- symbol turns out to be a normal string after all.
3913 -- Entity (Node4-Sem)
3914 -- Associated_Node (Node4-Sem)
3915 -- Has_Private_View (Flag11-Sem) set in generic units.
3916 -- Etype (Node5-Sem)
3918 -- Note: the Strval field may be set to No_String for generated
3919 -- operator symbols that are known not to be string literals
3922 -----------------------------------
3923 -- 6.1 Defining Operator Symbol --
3924 -----------------------------------
3926 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
3928 -- A defining operator symbol is an entity, which has additional
3929 -- fields depending on the setting of the Ekind field. These
3930 -- additional fields are defined (and access subprograms declared)
3931 -- in package Einfo.
3933 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
3934 -- are deliberately layed out to match the layout of fields in an
3935 -- ordinary N_Operator_Symbol node allowing for easy alteration of
3936 -- an operator symbol node into a defining operator symbol node.
3937 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
3938 -- for further details.
3940 -- N_Defining_Operator_Symbol
3941 -- Sloc points to literal
3942 -- Chars (Name1) contains the Name_Id for the operator symbol
3943 -- Next_Entity (Node2-Sem)
3944 -- Scope (Node3-Sem)
3945 -- Etype (Node5-Sem)
3947 ----------------------------
3948 -- 6.1 Parameter Profile --
3949 ----------------------------
3951 -- PARAMETER_PROFILE ::= [FORMAL_PART]
3953 ---------------------------------------
3954 -- 6.1 Parameter and Result Profile --
3955 ---------------------------------------
3957 -- PARAMETER_AND_RESULT_PROFILE ::= [FORMAL_PART] return SUBTYPE_MARK
3959 -- There is no explicit node in the tree for a parameter and result
3960 -- profile. Instead the information appears directly in the parent.
3962 ----------------------
3963 -- 6.1 Formal part --
3964 ----------------------
3967 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
3969 ----------------------------------
3970 -- 6.1 Parameter specification --
3971 ----------------------------------
3973 -- PARAMETER_SPECIFICATION ::=
3974 -- DEFINING_IDENTIFIER_LIST : MODE SUBTYPE_MARK
3975 -- [:= DEFAULT_EXPRESSION]
3976 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
3977 -- [:= DEFAULT_EXPRESSION]
3979 -- Although the syntax allows multiple identifiers in the list, the
3980 -- semantics is as though successive specifications were given with
3981 -- identical type definition and expression components. To simplify
3982 -- semantic processing, the parser represents a multiple declaration
3983 -- case as a sequence of single Specifications, using the More_Ids and
3984 -- Prev_Ids flags to preserve the original source form as described
3985 -- in the section on "Handling of Defining Identifier Lists".
3987 -- N_Parameter_Specification
3988 -- Sloc points to first identifier
3989 -- Defining_Identifier (Node1)
3990 -- In_Present (Flag15)
3991 -- Out_Present (Flag17)
3992 -- Parameter_Type (Node2) subtype mark or access definition
3993 -- Expression (Node3) (set to Empty if no default expression present)
3994 -- Do_Accessibility_Check (Flag13-Sem)
3995 -- More_Ids (Flag5) (set to False if no more identifiers in list)
3996 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
3997 -- Default_Expression (Node5-Sem)
4003 -- MODE ::= [in] | in out | out
4005 -- There is no explicit node in the tree for the Mode. Instead the
4006 -- In_Present and Out_Present flags are set in the parent node to
4007 -- record the presence of keywords specifying the mode.
4009 --------------------------
4010 -- 6.3 Subprogram Body --
4011 --------------------------
4013 -- SUBPROGRAM_BODY ::=
4014 -- SUBPROGRAM_SPECIFICATION is
4017 -- HANDLED_SEQUENCE_OF_STATEMENTS
4018 -- end [DESIGNATOR];
4020 -- N_Subprogram_Body
4021 -- Sloc points to FUNCTION or PROCEDURE
4022 -- Specification (Node1)
4023 -- Declarations (List2)
4024 -- Handled_Statement_Sequence (Node4)
4025 -- Activation_Chain_Entity (Node3-Sem)
4026 -- Corresponding_Spec (Node5-Sem)
4027 -- Acts_As_Spec (Flag4-Sem)
4028 -- Bad_Is_Detected (Flag15) used only by parser
4029 -- Do_Storage_Check (Flag17-Sem)
4030 -- Has_Priority_Pragma (Flag6-Sem)
4031 -- Is_Protected_Subprogram_Body (Flag7-Sem)
4032 -- Is_Task_Master (Flag5-Sem)
4033 -- Was_Originally_Stub (Flag13-Sem)
4035 -----------------------------------
4036 -- 6.4 Procedure Call Statement --
4037 -----------------------------------
4039 -- PROCEDURE_CALL_STATEMENT ::=
4040 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
4042 -- Note: the reason that a procedure call has expression fields is
4043 -- that it semantically resembles an expression, e.g. overloading is
4044 -- allowed and a type is concocted for semantic processing purposes.
4045 -- Certain of these fields, such as Parens are not relevant, but it
4046 -- is easier to just supply all of them together!
4048 -- N_Procedure_Call_Statement
4049 -- Sloc points to first token of name or prefix
4050 -- Name (Node2) stores name or prefix
4051 -- Parameter_Associations (List3) (set to No_List if no
4052 -- actual parameter part)
4053 -- First_Named_Actual (Node4-Sem)
4054 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4055 -- Do_Tag_Check (Flag13-Sem)
4056 -- No_Elaboration_Check (Flag14-Sem)
4057 -- Parameter_List_Truncated (Flag17-Sem)
4058 -- ABE_Is_Certain (Flag18-Sem)
4059 -- plus fields for expression
4061 -- If any IN parameter requires a range check, then the corresponding
4062 -- argument expression has the Do_Range_Check flag set, and the range
4063 -- check is done against the formal type. Note that this argument
4064 -- expression may appear directly in the Parameter_Associations list,
4065 -- or may be a descendent of an N_Parameter_Association node that
4066 -- appears in this list.
4068 ------------------------
4069 -- 6.4 Function Call --
4070 ------------------------
4072 -- FUNCTION_CALL ::=
4073 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
4075 -- Note: the parser may generate an indexed component node or simply
4076 -- a name node instead of a function call node. The semantic pass must
4077 -- correct this misidentification.
4080 -- Sloc points to first token of name or prefix
4081 -- Name (Node2) stores name or prefix
4082 -- Parameter_Associations (List3) (set to No_List if no
4083 -- actual parameter part)
4084 -- First_Named_Actual (Node4-Sem)
4085 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4086 -- Do_Tag_Check (Flag13-Sem)
4087 -- No_Elaboration_Check (Flag14-Sem)
4088 -- Parameter_List_Truncated (Flag17-Sem)
4089 -- ABE_Is_Certain (Flag18-Sem)
4090 -- plus fields for expression
4092 --------------------------------
4093 -- 6.4 Actual Parameter Part --
4094 --------------------------------
4096 -- ACTUAL_PARAMETER_PART ::=
4097 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
4099 --------------------------------
4100 -- 6.4 Parameter Association --
4101 --------------------------------
4103 -- PARAMETER_ASSOCIATION ::=
4104 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
4106 -- Note: the N_Parameter_Association node is built only if a formal
4107 -- parameter selector name is present, otherwise the parameter
4108 -- association appears in the tree simply as the node for the
4109 -- explicit actual parameter.
4111 -- N_Parameter_Association
4112 -- Sloc points to formal parameter
4113 -- Selector_Name (Node2) (always non-Empty, since this node is
4114 -- only used if a formal parameter selector name is present)
4115 -- Explicit_Actual_Parameter (Node3)
4116 -- Next_Named_Actual (Node4-Sem)
4118 ---------------------------
4119 -- 6.4 Actual Parameter --
4120 ---------------------------
4122 -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
4124 ---------------------------
4125 -- 6.5 Return Statement --
4126 ---------------------------
4128 -- RETURN_STATEMENT ::= return [EXPRESSION];
4130 -- N_Return_Statement
4131 -- Sloc points to RETURN
4132 -- Expression (Node3) (set to Empty if no expression present)
4133 -- Storage_Pool (Node1-Sem)
4134 -- Procedure_To_Call (Node4-Sem)
4135 -- Do_Tag_Check (Flag13-Sem)
4136 -- Return_Type (Node2-Sem)
4137 -- By_Ref (Flag5-Sem)
4139 -- Note: if a range check is required, then Do_Range_Check is set
4140 -- on the Expression. The range check is against Return_Type.
4142 ------------------------------
4143 -- 7.1 Package Declaration --
4144 ------------------------------
4146 -- PACKAGE_DECLARATION ::= PACKAGE_SPECIFICATION;
4148 -- Note: the activation chain entity for a package spec is used for
4149 -- all tasks declared in the package spec, or in the package body.
4151 -- N_Package_Declaration
4152 -- Sloc points to PACKAGE
4153 -- Specification (Node1)
4154 -- Corresponding_Body (Node5-Sem)
4155 -- Parent_Spec (Node4-Sem)
4156 -- Activation_Chain_Entity (Node3-Sem)
4158 --------------------------------
4159 -- 7.1 Package Specification --
4160 --------------------------------
4162 -- PACKAGE_SPECIFICATION ::=
4163 -- package DEFINING_PROGRAM_UNIT_NAME is
4164 -- {BASIC_DECLARATIVE_ITEM}
4166 -- {BASIC_DECLARATIVE_ITEM}]
4167 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
4169 -- N_Package_Specification
4170 -- Sloc points to PACKAGE
4171 -- Defining_Unit_Name (Node1)
4172 -- Visible_Declarations (List2)
4173 -- Private_Declarations (List3) (set to No_List if no private
4175 -- End_Label (Node4)
4176 -- Generic_Parent (Node5-Sem)
4177 -- Limited_View_Installed (Flag18-Sem)
4179 -----------------------
4180 -- 7.1 Package Body --
4181 -----------------------
4184 -- package body DEFINING_PROGRAM_UNIT_NAME is
4187 -- HANDLED_SEQUENCE_OF_STATEMENTS]
4188 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
4191 -- Sloc points to PACKAGE
4192 -- Defining_Unit_Name (Node1)
4193 -- Declarations (List2)
4194 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
4195 -- Corresponding_Spec (Node5-Sem)
4196 -- Was_Originally_Stub (Flag13-Sem)
4198 -- Note: if a source level package does not contain a handled sequence
4199 -- of statements, then the parser supplies a dummy one with a null
4200 -- sequence of statements. Comes_From_Source will be False in this
4201 -- constructed sequence. The reason we need this is for the End_Label
4202 -- field in the HSS.
4204 -----------------------------------
4205 -- 7.4 Private Type Declaration --
4206 -----------------------------------
4208 -- PRIVATE_TYPE_DECLARATION ::=
4209 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
4210 -- is [[abstract] tagged] [limited] private;
4212 -- Note: TAGGED is not permitted in Ada 83 mode
4214 -- N_Private_Type_Declaration
4215 -- Sloc points to TYPE
4216 -- Defining_Identifier (Node1)
4217 -- Discriminant_Specifications (List4) (set to No_List if no
4218 -- discriminant part)
4219 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4220 -- Abstract_Present (Flag4)
4221 -- Tagged_Present (Flag15)
4222 -- Limited_Present (Flag17)
4224 ----------------------------------------
4225 -- 7.4 Private Extension Declaration --
4226 ----------------------------------------
4228 -- PRIVATE_EXTENSION_DECLARATION ::=
4229 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
4230 -- [abstract] new ancestor_SUBTYPE_INDICATION with private;
4232 -- Note: private extension declarations are not allowed in Ada 83 mode
4234 -- N_Private_Extension_Declaration
4235 -- Sloc points to TYPE
4236 -- Defining_Identifier (Node1)
4237 -- Discriminant_Specifications (List4) (set to No_List if no
4238 -- discriminant part)
4239 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4240 -- Abstract_Present (Flag4)
4241 -- Subtype_Indication (Node5)
4243 ---------------------
4244 -- 8.4 Use Clause --
4245 ---------------------
4247 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
4249 -----------------------------
4250 -- 8.4 Use Package Clause --
4251 -----------------------------
4253 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
4255 -- N_Use_Package_Clause
4256 -- Sloc points to USE
4258 -- Next_Use_Clause (Node3-Sem)
4259 -- Hidden_By_Use_Clause (Elist4-Sem)
4261 --------------------------
4262 -- 8.4 Use Type Clause --
4263 --------------------------
4265 -- USE_TYPE_CLAUSE ::= use type SUBTYPE_MARK {, SUBTYPE_MARK};
4267 -- Note: use type clause is not permitted in Ada 83 mode
4269 -- N_Use_Type_Clause
4270 -- Sloc points to USE
4271 -- Subtype_Marks (List2)
4272 -- Next_Use_Clause (Node3-Sem)
4273 -- Hidden_By_Use_Clause (Elist4-Sem)
4275 -------------------------------
4276 -- 8.5 Renaming Declaration --
4277 -------------------------------
4279 -- RENAMING_DECLARATION ::=
4280 -- OBJECT_RENAMING_DECLARATION
4281 -- | EXCEPTION_RENAMING_DECLARATION
4282 -- | PACKAGE_RENAMING_DECLARATION
4283 -- | SUBPROGRAM_RENAMING_DECLARATION
4284 -- | GENERIC_RENAMING_DECLARATION
4286 --------------------------------------
4287 -- 8.5 Object Renaming Declaration --
4288 --------------------------------------
4290 -- OBJECT_RENAMING_DECLARATION ::=
4291 -- DEFINING_IDENTIFIER : SUBTYPE_MARK renames object_NAME;
4292 -- | DEFINING_IDENTIFIER : ACCESS_DEFINITION renames object_NAME;
4294 -- Note: Access_Definition is an optional field that gives support to
4295 -- Ada 0Y (AI-230). The parser generates nodes that have either the
4296 -- Subtype_Indication field or else the Access_Definition field.
4298 -- N_Object_Renaming_Declaration
4299 -- Sloc points to first identifier
4300 -- Defining_Identifier (Node1)
4301 -- Subtype_Mark (Node4) (set to Empty if not present)
4302 -- Access_Definition (Node3) (set to Empty if not present)
4304 -- Corresponding_Generic_Association (Node5-Sem)
4306 -----------------------------------------
4307 -- 8.5 Exception Renaming Declaration --
4308 -----------------------------------------
4310 -- EXCEPTION_RENAMING_DECLARATION ::=
4311 -- DEFINING_IDENTIFIER : exception renames exception_NAME;
4313 -- N_Exception_Renaming_Declaration
4314 -- Sloc points to first identifier
4315 -- Defining_Identifier (Node1)
4318 ---------------------------------------
4319 -- 8.5 Package Renaming Declaration --
4320 ---------------------------------------
4322 -- PACKAGE_RENAMING_DECLARATION ::=
4323 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME;
4325 -- N_Package_Renaming_Declaration
4326 -- Sloc points to PACKAGE
4327 -- Defining_Unit_Name (Node1)
4329 -- Parent_Spec (Node4-Sem)
4331 ------------------------------------------
4332 -- 8.5 Subprogram Renaming Declaration --
4333 ------------------------------------------
4335 -- SUBPROGRAM_RENAMING_DECLARATION ::=
4336 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME;
4338 -- N_Subprogram_Renaming_Declaration
4339 -- Sloc points to RENAMES
4340 -- Specification (Node1)
4342 -- Parent_Spec (Node4-Sem)
4343 -- Corresponding_Spec (Node5-Sem)
4345 -----------------------------------------
4346 -- 8.5.5 Generic Renaming Declaration --
4347 -----------------------------------------
4349 -- GENERIC_RENAMING_DECLARATION ::=
4350 -- generic package DEFINING_PROGRAM_UNIT_NAME
4351 -- renames generic_package_NAME
4352 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
4353 -- renames generic_procedure_NAME
4354 -- | generic function DEFINING_PROGRAM_UNIT_NAME
4355 -- renames generic_function_NAME
4357 -- N_Generic_Package_Renaming_Declaration
4358 -- Sloc points to GENERIC
4359 -- Defining_Unit_Name (Node1)
4361 -- Parent_Spec (Node4-Sem)
4363 -- N_Generic_Procedure_Renaming_Declaration
4364 -- Sloc points to GENERIC
4365 -- Defining_Unit_Name (Node1)
4367 -- Parent_Spec (Node4-Sem)
4369 -- N_Generic_Function_Renaming_Declaration
4370 -- Sloc points to GENERIC
4371 -- Defining_Unit_Name (Node1)
4373 -- Parent_Spec (Node4-Sem)
4375 --------------------------------
4376 -- 9.1 Task Type Declaration --
4377 --------------------------------
4379 -- TASK_TYPE_DECLARATION ::=
4380 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4381 -- [is TASK_DEFINITITION];
4383 -- N_Task_Type_Declaration
4384 -- Sloc points to TASK
4385 -- Defining_Identifier (Node1)
4386 -- Task_Body_Procedure (Node2-Sem)
4387 -- Discriminant_Specifications (List4) (set to No_List if no
4388 -- discriminant part)
4389 -- Task_Definition (Node3) (set to Empty if not present)
4390 -- Corresponding_Body (Node5-Sem)
4392 ----------------------------------
4393 -- 9.1 Single Task Declaration --
4394 ----------------------------------
4396 -- SINGLE_TASK_DECLARATION ::=
4397 -- task DEFINING_IDENTIFIER [is TASK_DEFINITION];
4399 -- N_Single_Task_Declaration
4400 -- Sloc points to TASK
4401 -- Defining_Identifier (Node1)
4402 -- Task_Definition (Node3) (set to Empty if not present)
4404 --------------------------
4405 -- 9.1 Task Definition --
4406 --------------------------
4408 -- TASK_DEFINITION ::=
4412 -- end [task_IDENTIFIER]
4414 -- Note: as a result of semantic analysis, the list of task items can
4415 -- include implicit type declarations resulting from entry families.
4417 -- N_Task_Definition
4418 -- Sloc points to first token of task definition
4419 -- Visible_Declarations (List2)
4420 -- Private_Declarations (List3) (set to No_List if no private part)
4421 -- End_Label (Node4)
4422 -- Has_Priority_Pragma (Flag6-Sem)
4423 -- Has_Storage_Size_Pragma (Flag5-Sem)
4424 -- Has_Task_Info_Pragma (Flag7-Sem)
4425 -- Has_Task_Name_Pragma (Flag8-Sem)
4427 --------------------
4429 --------------------
4431 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
4433 --------------------
4435 --------------------
4438 -- task body task_DEFINING_IDENTIFIER is
4441 -- HANDLED_SEQUENCE_OF_STATEMENTS
4442 -- end [task_IDENTIFIER];
4444 -- Gigi restriction: This node never appears.
4447 -- Sloc points to TASK
4448 -- Defining_Identifier (Node1)
4449 -- Declarations (List2)
4450 -- Handled_Statement_Sequence (Node4)
4451 -- Is_Task_Master (Flag5-Sem)
4452 -- Activation_Chain_Entity (Node3-Sem)
4453 -- Corresponding_Spec (Node5-Sem)
4454 -- Was_Originally_Stub (Flag13-Sem)
4456 -------------------------------------
4457 -- 9.4 Protected Type Declaration --
4458 -------------------------------------
4460 -- PROTECTED_TYPE_DECLARATION ::=
4461 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4462 -- is PROTECTED_DEFINITION;
4464 -- Note: protected type declarations are not permitted in Ada 83 mode
4466 -- N_Protected_Type_Declaration
4467 -- Sloc points to PROTECTED
4468 -- Defining_Identifier (Node1)
4469 -- Discriminant_Specifications (List4) (set to No_List if no
4470 -- discriminant part)
4471 -- Protected_Definition (Node3)
4472 -- Corresponding_Body (Node5-Sem)
4474 ---------------------------------------
4475 -- 9.4 Single Protected Declaration --
4476 ---------------------------------------
4478 -- SINGLE_PROTECTED_DECLARATION ::=
4479 -- protected DEFINING_IDENTIFIER is PROTECTED_DEFINITION;
4481 -- Note: single protected declarations are not allowed in Ada 83 mode
4483 -- N_Single_Protected_Declaration
4484 -- Sloc points to PROTECTED
4485 -- Defining_Identifier (Node1)
4486 -- Protected_Definition (Node3)
4488 -------------------------------
4489 -- 9.4 Protected Definition --
4490 -------------------------------
4492 -- PROTECTED_DEFINITION ::=
4493 -- {PROTECTED_OPERATION_DECLARATION}
4495 -- {PROTECTED_ELEMENT_DECLARATION}]
4496 -- end [protected_IDENTIFIER]
4498 -- N_Protected_Definition
4499 -- Sloc points to first token of protected definition
4500 -- Visible_Declarations (List2)
4501 -- Private_Declarations (List3) (set to No_List if no private part)
4502 -- End_Label (Node4)
4503 -- Has_Priority_Pragma (Flag6-Sem)
4505 ------------------------------------------
4506 -- 9.4 Protected Operation Declaration --
4507 ------------------------------------------
4509 -- PROTECTED_OPERATION_DECLARATION ::=
4510 -- SUBPROGRAM_DECLARATION
4511 -- | ENTRY_DECLARATION
4512 -- | REPRESENTATION_CLAUSE
4514 ----------------------------------------
4515 -- 9.4 Protected Element Declaration --
4516 ----------------------------------------
4518 -- PROTECTED_ELEMENT_DECLARATION ::=
4519 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
4521 -------------------------
4522 -- 9.4 Protected Body --
4523 -------------------------
4525 -- PROTECTED_BODY ::=
4526 -- protected body DEFINING_IDENTIFIER is
4527 -- {PROTECTED_OPERATION_ITEM}
4528 -- end [protected_IDENTIFIER];
4530 -- Note: protected bodies are not allowed in Ada 83 mode
4532 -- Gigi restriction: This node never appears.
4535 -- Sloc points to PROTECTED
4536 -- Defining_Identifier (Node1)
4537 -- Declarations (List2) protected operation items (and pragmas)
4538 -- End_Label (Node4)
4539 -- Corresponding_Spec (Node5-Sem)
4540 -- Was_Originally_Stub (Flag13-Sem)
4542 -----------------------------------
4543 -- 9.4 Protected Operation Item --
4544 -----------------------------------
4546 -- PROTECTED_OPERATION_ITEM ::=
4547 -- SUBPROGRAM_DECLARATION
4548 -- | SUBPROGRAM_BODY
4550 -- | REPRESENTATION_CLAUSE
4552 ------------------------------
4553 -- 9.5.2 Entry Declaration --
4554 ------------------------------
4556 -- ENTRY_DECLARATION ::=
4557 -- entry DEFINING_IDENTIFIER
4558 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE;
4560 -- N_Entry_Declaration
4561 -- Sloc points to ENTRY
4562 -- Defining_Identifier (Node1)
4563 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
4564 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4565 -- Corresponding_Body (Node5-Sem)
4567 -----------------------------
4568 -- 9.5.2 Accept statement --
4569 -----------------------------
4571 -- ACCEPT_STATEMENT ::=
4572 -- accept entry_DIRECT_NAME
4573 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
4574 -- HANDLED_SEQUENCE_OF_STATEMENTS
4575 -- end [entry_IDENTIFIER]];
4577 -- Gigi restriction: This node never appears.
4579 -- Note: there are no explicit declarations allowed in an accept
4580 -- statement. However, the implicit declarations for any statement
4581 -- identifiers (labels and block/loop identifiers) are declarations
4582 -- that belong logically to the accept statement, and that is why
4583 -- there is a Declarations field in this node.
4585 -- N_Accept_Statement
4586 -- Sloc points to ACCEPT
4587 -- Entry_Direct_Name (Node1)
4588 -- Entry_Index (Node5) (set to Empty if not present)
4589 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4590 -- Handled_Statement_Sequence (Node4)
4591 -- Declarations (List2) (set to No_List if no declarations)
4593 ------------------------
4594 -- 9.5.2 Entry Index --
4595 ------------------------
4597 -- ENTRY_INDEX ::= EXPRESSION
4599 -----------------------
4600 -- 9.5.2 Entry Body --
4601 -----------------------
4604 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
4607 -- HANDLED_SEQUENCE_OF_STATEMENTS
4608 -- end [entry_IDENTIFIER];
4610 -- ENTRY_BARRIER ::= when CONDITION
4612 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
4613 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
4614 -- too full (it would otherwise have too many fields)
4616 -- Gigi restriction: This node never appears.
4619 -- Sloc points to ENTRY
4620 -- Defining_Identifier (Node1)
4621 -- Entry_Body_Formal_Part (Node5)
4622 -- Declarations (List2)
4623 -- Handled_Statement_Sequence (Node4)
4624 -- Activation_Chain_Entity (Node3-Sem)
4626 -----------------------------------
4627 -- 9.5.2 Entry Body Formal Part --
4628 -----------------------------------
4630 -- ENTRY_BODY_FORMAL_PART ::=
4631 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
4633 -- Note that an entry body formal part node is present even if it is
4634 -- empty. This reflects the grammar, in which it is the components of
4635 -- the entry body formal part that are optional, not the entry body
4636 -- formal part itself. Also this means that the barrier condition
4637 -- always has somewhere to be stored.
4639 -- Gigi restriction: This node never appears.
4641 -- N_Entry_Body_Formal_Part
4642 -- Sloc points to first token
4643 -- Entry_Index_Specification (Node4) (set to Empty if not present)
4644 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4645 -- Condition (Node1) from entry barrier of entry body
4647 --------------------------
4648 -- 9.5.2 Entry Barrier --
4649 --------------------------
4651 -- ENTRY_BARRIER ::= when CONDITION
4653 --------------------------------------
4654 -- 9.5.2 Entry Index Specification --
4655 --------------------------------------
4657 -- ENTRY_INDEX_SPECIFICATION ::=
4658 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
4660 -- Gigi restriction: This node never appears.
4662 -- N_Entry_Index_Specification
4663 -- Sloc points to FOR
4664 -- Defining_Identifier (Node1)
4665 -- Discrete_Subtype_Definition (Node4)
4667 ---------------------------------
4668 -- 9.5.3 Entry Call Statement --
4669 ---------------------------------
4671 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
4673 -- The parser may generate a procedure call for this construct. The
4674 -- semantic pass must correct this misidentification where needed.
4676 -- Gigi restriction: This node never appears.
4678 -- N_Entry_Call_Statement
4679 -- Sloc points to first token of name
4681 -- Parameter_Associations (List3) (set to No_List if no
4682 -- actual parameter part)
4683 -- First_Named_Actual (Node4-Sem)
4685 ------------------------------
4686 -- 9.5.4 Requeue Statement --
4687 ------------------------------
4689 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
4691 -- Note: requeue statements are not permitted in Ada 83 mode
4693 -- Gigi restriction: This node never appears.
4695 -- N_Requeue_Statement
4696 -- Sloc points to REQUEUE
4698 -- Abort_Present (Flag15)
4700 --------------------------
4701 -- 9.6 Delay Statement --
4702 --------------------------
4704 -- DELAY_STATEMENT ::=
4705 -- DELAY_UNTIL_STATEMENT
4706 -- | DELAY_RELATIVE_STATEMENT
4708 --------------------------------
4709 -- 9.6 Delay Until Statement --
4710 --------------------------------
4712 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
4714 -- Note: delay until statements are not permitted in Ada 83 mode
4716 -- Gigi restriction: This node never appears.
4718 -- N_Delay_Until_Statement
4719 -- Sloc points to DELAY
4720 -- Expression (Node3)
4722 -----------------------------------
4723 -- 9.6 Delay Relative Statement --
4724 -----------------------------------
4726 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
4728 -- Gigi restriction: This node never appears.
4730 -- N_Delay_Relative_Statement
4731 -- Sloc points to DELAY
4732 -- Expression (Node3)
4734 ---------------------------
4735 -- 9.7 Select Statement --
4736 ---------------------------
4738 -- SELECT_STATEMENT ::=
4740 -- | TIMED_ENTRY_CALL
4741 -- | CONDITIONAL_ENTRY_CALL
4742 -- | ASYNCHRONOUS_SELECT
4744 -----------------------------
4745 -- 9.7.1 Selective Accept --
4746 -----------------------------
4748 -- SELECTIVE_ACCEPT ::=
4751 -- SELECT_ALTERNATIVE
4754 -- SELECT_ALTERNATIVE}
4756 -- SEQUENCE_OF_STATEMENTS]
4759 -- Gigi restriction: This node never appears.
4761 -- Note: the guard expression, if present, appears in the node for
4762 -- the select alternative.
4764 -- N_Selective_Accept
4765 -- Sloc points to SELECT
4766 -- Select_Alternatives (List1)
4767 -- Else_Statements (List4) (set to No_List if no else part)
4773 -- GUARD ::= when CONDITION =>
4775 -- As noted above, the CONDITION that is part of a GUARD is included
4776 -- in the node for the select alernative for convenience.
4778 -------------------------------
4779 -- 9.7.1 Select Alternative --
4780 -------------------------------
4782 -- SELECT_ALTERNATIVE ::=
4783 -- ACCEPT_ALTERNATIVE
4784 -- | DELAY_ALTERNATIVE
4785 -- | TERMINATE_ALTERNATIVE
4787 -------------------------------
4788 -- 9.7.1 Accept Alternative --
4789 -------------------------------
4791 -- ACCEPT_ALTERNATIVE ::=
4792 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
4794 -- Gigi restriction: This node never appears.
4796 -- N_Accept_Alternative
4797 -- Sloc points to ACCEPT
4798 -- Accept_Statement (Node2)
4799 -- Condition (Node1) from the guard (set to Empty if no guard present)
4800 -- Statements (List3) (set to Empty_List if no statements)
4801 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4802 -- Accept_Handler_Records (List5-Sem)
4804 ------------------------------
4805 -- 9.7.1 Delay Alternative --
4806 ------------------------------
4808 -- DELAY_ALTERNATIVE ::=
4809 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
4811 -- Gigi restriction: This node never appears.
4813 -- N_Delay_Alternative
4814 -- Sloc points to DELAY
4815 -- Delay_Statement (Node2)
4816 -- Condition (Node1) from the guard (set to Empty if no guard present)
4817 -- Statements (List3) (set to Empty_List if no statements)
4818 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4820 ----------------------------------
4821 -- 9.7.1 Terminate Alternative --
4822 ----------------------------------
4824 -- TERMINATE_ALTERNATIVE ::= terminate;
4826 -- Gigi restriction: This node never appears.
4828 -- N_Terminate_Alternative
4829 -- Sloc points to TERMINATE
4830 -- Condition (Node1) from the guard (set to Empty if no guard present)
4831 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4832 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
4834 -----------------------------
4835 -- 9.7.2 Timed Entry Call --
4836 -----------------------------
4838 -- TIMED_ENTRY_CALL ::=
4840 -- ENTRY_CALL_ALTERNATIVE
4842 -- DELAY_ALTERNATIVE
4845 -- Gigi restriction: This node never appears.
4847 -- N_Timed_Entry_Call
4848 -- Sloc points to SELECT
4849 -- Entry_Call_Alternative (Node1)
4850 -- Delay_Alternative (Node4)
4852 -----------------------------------
4853 -- 9.7.2 Entry Call Alternative --
4854 -----------------------------------
4856 -- ENTRY_CALL_ALTERNATIVE ::=
4857 -- ENTRY_CALL_STATEMENT [SEQUENCE_OF_STATEMENTS]
4859 -- Gigi restriction: This node never appears.
4861 -- N_Entry_Call_Alternative
4862 -- Sloc points to first token of entry call statement
4863 -- Entry_Call_Statement (Node1)
4864 -- Statements (List3) (set to Empty_List if no statements)
4865 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4867 -----------------------------------
4868 -- 9.7.3 Conditional Entry Call --
4869 -----------------------------------
4871 -- CONDITIONAL_ENTRY_CALL ::=
4873 -- ENTRY_CALL_ALTERNATIVE
4875 -- SEQUENCE_OF_STATEMENTS
4878 -- Gigi restriction: This node never appears.
4880 -- N_Conditional_Entry_Call
4881 -- Sloc points to SELECT
4882 -- Entry_Call_Alternative (Node1)
4883 -- Else_Statements (List4)
4885 --------------------------------
4886 -- 9.7.4 Asynchronous Select --
4887 --------------------------------
4889 -- ASYNCHRONOUS_SELECT ::=
4891 -- TRIGGERING_ALTERNATIVE
4896 -- Note: asynchronous select is not permitted in Ada 83 mode
4898 -- Gigi restriction: This node never appears.
4900 -- N_Asynchronous_Select
4901 -- Sloc points to SELECT
4902 -- Triggering_Alternative (Node1)
4903 -- Abortable_Part (Node2)
4905 -----------------------------------
4906 -- 9.7.4 Triggering Alternative --
4907 -----------------------------------
4909 -- TRIGGERING_ALTERNATIVE ::=
4910 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
4912 -- Gigi restriction: This node never appears.
4914 -- N_Triggering_Alternative
4915 -- Sloc points to first token of triggering statement
4916 -- Triggering_Statement (Node1)
4917 -- Statements (List3) (set to Empty_List if no statements)
4918 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4920 ---------------------------------
4921 -- 9.7.4 Triggering Statement --
4922 ---------------------------------
4924 -- TRIGGERING_STATEMENT ::= ENTRY_CALL_STATEMENT | DELAY_STATEMENT
4926 ---------------------------
4927 -- 9.7.4 Abortable Part --
4928 ---------------------------
4930 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
4932 -- Gigi restriction: This node never appears.
4935 -- Sloc points to ABORT
4936 -- Statements (List3)
4938 --------------------------
4939 -- 9.8 Abort Statement --
4940 --------------------------
4942 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
4944 -- Gigi restriction: This node never appears.
4946 -- N_Abort_Statement
4947 -- Sloc points to ABORT
4950 -------------------------
4951 -- 10.1.1 Compilation --
4952 -------------------------
4954 -- COMPILATION ::= {COMPILATION_UNIT}
4956 -- There is no explicit node in the tree for a compilation, since in
4957 -- general the compiler is processing only a single compilation unit
4958 -- at a time. It is possible to parse multiple units in syntax check
4959 -- only mode, but they the trees are discarded in any case.
4961 ------------------------------
4962 -- 10.1.1 Compilation Unit --
4963 ------------------------------
4965 -- COMPILATION_UNIT ::=
4966 -- CONTEXT_CLAUSE LIBRARY_ITEM
4967 -- | CONTEXT_CLAUSE SUBUNIT
4969 -- The N_Compilation_Unit node itself respresents the above syntax.
4970 -- However, there are two additional items not reflected in the above
4971 -- syntax. First we have the global declarations that are added by the
4972 -- code generator. These are outer level declarations (so they cannot
4973 -- be represented as being inside the units). An example is the wrapper
4974 -- subprograms that are created to do ABE checking. As always a list of
4975 -- declarations can contain actions as well (i.e. statements), and such
4976 -- statements are executed as part of the elaboration of the unit. Note
4977 -- that all such declarations are elaborated before the library unit.
4979 -- Similarly, certain actions need to be elaborated at the completion
4980 -- of elaboration of the library unit (notably the statement that sets
4981 -- the Boolean flag indicating that elaboration is complete).
4983 -- The third item not reflected in the syntax is pragmas that appear
4984 -- after the compilation unit. As always pragmas are a problem since
4985 -- they are not part of the formal syntax, but can be stuck into the
4986 -- source following a set of ad hoc rules, and we have to find an ad
4987 -- hoc way of sticking them into the tree. For pragmas that appear
4988 -- before the library unit, we just consider them to be part of the
4989 -- context clause, and pragmas can appear in the Context_Items list
4990 -- of the compilation unit. However, pragmas can also appear after
4991 -- the library item.
4993 -- To deal with all these problems, we create an auxiliary node for
4994 -- a compilation unit, referenced from the N_Compilation_Unit node
4995 -- that contains these three items.
4997 -- N_Compilation_Unit
4998 -- Sloc points to first token of defining unit name
4999 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
5000 -- Context_Items (List1) context items and pragmas preceding unit
5001 -- Private_Present (Flag15) set if library unit has private keyword
5002 -- Unit (Node2) library item or subunit
5003 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
5004 -- Has_No_Elaboration_Code (Flag17-Sem)
5005 -- Body_Required (Flag13-Sem) set for spec if body is required
5006 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
5007 -- First_Inlined_Subprogram (Node3-Sem)
5009 -- N_Compilation_Unit_Aux
5010 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
5011 -- Declarations (List2) (set to No_List if no global declarations)
5012 -- Actions (List1) (set to No_List if no actions)
5013 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
5014 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
5016 --------------------------
5017 -- 10.1.1 Library Item --
5018 --------------------------
5021 -- [private] LIBRARY_UNIT_DECLARATION
5022 -- | LIBRARY_UNIT_BODY
5023 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
5025 -- Note: PRIVATE is not allowed in Ada 83 mode
5027 -- There is no explicit node in the tree for library item, instead
5028 -- the declaration or body, and the flag for private if present,
5029 -- appear in the N_Compilation_Unit clause.
5031 ----------------------------------------
5032 -- 10.1.1 Library Unit Declararation --
5033 ----------------------------------------
5035 -- LIBRARY_UNIT_DECLARATION ::=
5036 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
5037 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
5039 -------------------------------------------------
5040 -- 10.1.1 Library Unit Renaming Declararation --
5041 -------------------------------------------------
5043 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
5044 -- PACKAGE_RENAMING_DECLARATION
5045 -- | GENERIC_RENAMING_DECLARATION
5046 -- | SUBPROGRAM_RENAMING_DECLARATION
5048 -------------------------------
5049 -- 10.1.1 Library unit body --
5050 -------------------------------
5052 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
5054 ------------------------------
5055 -- 10.1.1 Parent Unit Name --
5056 ------------------------------
5058 -- PARENT_UNIT_NAME ::= NAME
5060 ----------------------------
5061 -- 10.1.2 Context clause --
5062 ----------------------------
5064 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
5066 -- The context clause can include pragmas, and any pragmas that appear
5067 -- before the context clause proper (i.e. all configuration pragmas,
5068 -- also appear at the front of this list).
5070 --------------------------
5071 -- 10.1.2 Context_Item --
5072 --------------------------
5074 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
5076 -------------------------
5077 -- 10.1.2 With clause --
5078 -------------------------
5081 -- with library_unit_NAME {,library_unit_NAME};
5083 -- A separate With clause is built for each name, so that we have
5084 -- a Corresponding_Spec field for each with'ed spec. The flags
5085 -- First_Name and Last_Name are used to reconstruct the exact
5086 -- source form. When a list of names appears in one with clause,
5087 -- the first name in the list has First_Name set, and the last
5088 -- has Last_Name set. If the with clause has only one name, then
5089 -- both of the flags First_Name and Last_Name are set in this name.
5091 -- Note: in the case of implicit with's that are installed by the
5092 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
5093 -- set to Standard_Location, but it is incorrect to test the Sloc
5094 -- to find out if a with clause is implicit, test the flag instead.
5097 -- Sloc points to first token of library unit name
5099 -- Library_Unit (Node4-Sem)
5100 -- Corresponding_Spec (Node5-Sem)
5101 -- First_Name (Flag5) (set to True if first name or only one name)
5102 -- Last_Name (Flag6) (set to True if last name or only one name)
5103 -- Context_Installed (Flag13-Sem)
5104 -- Elaborate_Present (Flag4-Sem)
5105 -- Elaborate_All_Present (Flag15-Sem)
5106 -- Implicit_With (Flag16-Sem)
5107 -- Limited_Present (Flag17) set if LIMITED is present
5108 -- Limited_View_Installed (Flag18-Sem)
5109 -- Unreferenced_In_Spec (Flag7-Sem)
5110 -- No_Entities_Ref_In_Spec (Flag8-Sem)
5112 -- Note: Limited_Present and Limited_View_Installed give support to
5113 -- Ada 0Y (AI-50217).
5115 ----------------------
5116 -- With_Type clause --
5117 ----------------------
5119 -- This is a GNAT extension, used to implement mutually recursive
5120 -- types declared in different packages.
5122 -- WITH_TYPE_CLAUSE ::=
5123 -- with type type_NAME is access | with type type_NAME is tagged
5125 -- N_With_Type_Clause
5126 -- Sloc points to first token of type name
5128 -- Tagged_Present (Flag15)
5130 ---------------------
5131 -- 10.2 Body stub --
5132 ---------------------
5135 -- SUBPROGRAM_BODY_STUB
5136 -- | PACKAGE_BODY_STUB
5138 -- | PROTECTED_BODY_STUB
5140 ----------------------------------
5141 -- 10.1.3 Subprogram Body Stub --
5142 ----------------------------------
5144 -- SUBPROGRAM_BODY_STUB ::=
5145 -- SUBPROGRAM_SPECIFICATION is separate;
5147 -- N_Subprogram_Body_Stub
5148 -- Sloc points to FUNCTION or PROCEDURE
5149 -- Specification (Node1)
5150 -- Library_Unit (Node4-Sem) points to the subunit
5151 -- Corresponding_Body (Node5-Sem)
5153 -------------------------------
5154 -- 10.1.3 Package Body Stub --
5155 -------------------------------
5157 -- PACKAGE_BODY_STUB ::=
5158 -- package body DEFINING_IDENTIFIER is separate;
5160 -- N_Package_Body_Stub
5161 -- Sloc points to PACKAGE
5162 -- Defining_Identifier (Node1)
5163 -- Library_Unit (Node4-Sem) points to the subunit
5164 -- Corresponding_Body (Node5-Sem)
5166 ----------------------------
5167 -- 10.1.3 Task Body Stub --
5168 ----------------------------
5170 -- TASK_BODY_STUB ::=
5171 -- task body DEFINING_IDENTIFIER is separate;
5174 -- Sloc points to TASK
5175 -- Defining_Identifier (Node1)
5176 -- Library_Unit (Node4-Sem) points to the subunit
5177 -- Corresponding_Body (Node5-Sem)
5179 ---------------------------------
5180 -- 10.1.3 Protected Body Stub --
5181 ---------------------------------
5183 -- PROTECTED_BODY_STUB ::=
5184 -- protected body DEFINING_IDENTIFIER is separate;
5186 -- Note: protected body stubs are not allowed in Ada 83 mode
5188 -- N_Protected_Body_Stub
5189 -- Sloc points to PROTECTED
5190 -- Defining_Identifier (Node1)
5191 -- Library_Unit (Node4-Sem) points to the subunit
5192 -- Corresponding_Body (Node5-Sem)
5194 ---------------------
5195 -- 10.1.3 Subunit --
5196 ---------------------
5198 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
5201 -- Sloc points to SEPARATE
5202 -- Name (Node2) is the name of the parent unit
5203 -- Proper_Body (Node1) is the subunit body
5204 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
5206 ---------------------------------
5207 -- 11.1 Exception Declaration --
5208 ---------------------------------
5210 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception;
5212 -- For consistency with object declarations etc, the parser converts
5213 -- the case of multiple identifiers being declared to a series of
5214 -- declarations in which the expression is copied, using the More_Ids
5215 -- and Prev_Ids flags to remember the souce form as described in the
5216 -- section on "Handling of Defining Identifier Lists".
5218 -- N_Exception_Declaration
5219 -- Sloc points to EXCEPTION
5220 -- Defining_Identifier (Node1)
5221 -- Expression (Node3-Sem)
5222 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5223 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5225 ------------------------------------------
5226 -- 11.2 Handled Sequence Of Statements --
5227 ------------------------------------------
5229 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
5230 -- SEQUENCE_OF_STATEMENTS
5232 -- EXCEPTION_HANDLER
5233 -- {EXCEPTION_HANDLER}]
5235 -- cleanup_procedure_call (param, param, param, ...);]
5237 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
5238 -- used only internally currently, but is considered to be syntactic.
5239 -- At the moment, the only cleanup action allowed is a single call to
5240 -- a parameterless procedure, and the Identifier field of the node is
5241 -- the procedure to be called. Also there is a current restriction
5242 -- that exception handles and a cleanup cannot be present in the same
5243 -- frame, so at least one of Exception_Handlers or the Identifier must
5246 -- Actually, more accurately, this restriction applies to the original
5247 -- source program. In the expanded tree, if the At_End_Proc field is
5248 -- present, then there will also be an exception handler of the form:
5250 -- when all others =>
5254 -- where cleanup is the procedure to be generated. The reason we do
5255 -- this is so that the front end can handle the necessary entries in
5256 -- the exception tables, and other exception handler actions required
5257 -- as part of the normal handling for exception handlers.
5259 -- The AT END cleanup handler protects only the sequence of statements
5260 -- (not the associated declarations of the parent), just like exception
5261 -- handlers. The big difference is that the cleanup procedure is called
5262 -- on either a normal or an abnormal exit from the statement sequence.
5264 -- Note: the list of Exception_Handlers can contain pragmas as well
5265 -- as actual handlers. In practice these pragmas can only occur at
5266 -- the start of the list, since any pragmas occurring later on will
5267 -- be included in the statement list of the corresponding handler.
5269 -- Note: although in the Ada syntax, the sequence of statements in
5270 -- a handled sequence of statements can only contain statements, we
5271 -- allow free mixing of declarations and statements in the resulting
5272 -- expanded tree. This is for example used to deal with the case of
5273 -- a cleanup procedure that must handle declarations as well as the
5274 -- statements of a block.
5276 -- N_Handled_Sequence_Of_Statements
5277 -- Sloc points to first token of first statement
5278 -- Statements (List3)
5279 -- End_Label (Node4) (set to Empty if expander generated)
5280 -- Exception_Handlers (List5) (set to No_List if none present)
5281 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
5282 -- First_Real_Statement (Node2-Sem)
5283 -- Zero_Cost_Handling (Flag5-Sem)
5285 -- Note: the parent always contains a Declarations field which contains
5286 -- declarations associated with the handled sequence of statements. This
5287 -- is true even in the case of an accept statement (see description of
5288 -- the N_Accept_Statement node).
5290 -- End_Label refers to the containing construct.
5292 -----------------------------
5293 -- 11.2 Exception Handler --
5294 -----------------------------
5296 -- EXCEPTION_HANDLER ::=
5297 -- when [CHOICE_PARAMETER_SPECIFICATION :]
5298 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
5299 -- SEQUENCE_OF_STATEMENTS
5301 -- Note: choice parameter specification is not allowed in Ada 83 mode
5303 -- N_Exception_Handler
5304 -- Sloc points to WHEN
5305 -- Choice_Parameter (Node2) (set to Empty if not present)
5306 -- Exception_Choices (List4)
5307 -- Statements (List3)
5308 -- Zero_Cost_Handling (Flag5-Sem)
5310 ------------------------------------------
5311 -- 11.2 Choice parameter specification --
5312 ------------------------------------------
5314 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
5316 ----------------------------
5317 -- 11.2 Exception Choice --
5318 ----------------------------
5320 -- EXCEPTION_CHOICE ::= exception_NAME | others
5322 -- Except in the case of OTHERS, no explicit node appears in the tree
5323 -- for exception choice. Instead the exception name appears directly.
5324 -- An OTHERS choice is represented by a N_Others_Choice node (see
5327 -- Note: for the exception choice created for an at end handler, the
5328 -- exception choice is an N_Others_Choice node with All_Others set.
5330 ---------------------------
5331 -- 11.3 Raise Statement --
5332 ---------------------------
5334 -- RAISE_STATEMENT ::= raise [exception_NAME];
5336 -- N_Raise_Statement
5337 -- Sloc points to RAISE
5338 -- Name (Node2) (set to Empty if no exception name present)
5340 -------------------------------
5341 -- 12.1 Generic Declaration --
5342 -------------------------------
5344 -- GENERIC_DECLARATION ::=
5345 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
5347 ------------------------------------------
5348 -- 12.1 Generic Subprogram Declaration --
5349 ------------------------------------------
5351 -- GENERIC_SUBPROGRAM_DECLARATION ::=
5352 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION;
5354 -- Note: Generic_Formal_Declarations can include pragmas
5356 -- N_Generic_Subprogram_Declaration
5357 -- Sloc points to GENERIC
5358 -- Specification (Node1) subprogram specification
5359 -- Corresponding_Body (Node5-Sem)
5360 -- Generic_Formal_Declarations (List2) from generic formal part
5361 -- Parent_Spec (Node4-Sem)
5363 ---------------------------------------
5364 -- 12.1 Generic Package Declaration --
5365 ---------------------------------------
5367 -- GENERIC_PACKAGE_DECLARATION ::=
5368 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION;
5370 -- Note: when we do generics right, the Activation_Chain_Entity entry
5371 -- for this node can be removed (since the expander won't see generic
5372 -- units any more)???.
5374 -- Note: Generic_Formal_Declarations can include pragmas
5376 -- N_Generic_Package_Declaration
5377 -- Sloc points to GENERIC
5378 -- Specification (Node1) package specification
5379 -- Corresponding_Body (Node5-Sem)
5380 -- Generic_Formal_Declarations (List2) from generic formal part
5381 -- Parent_Spec (Node4-Sem)
5382 -- Activation_Chain_Entity (Node3-Sem)
5384 -------------------------------
5385 -- 12.1 Generic Formal Part --
5386 -------------------------------
5388 -- GENERIC_FORMAL_PART ::=
5389 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
5391 ------------------------------------------------
5392 -- 12.1 Generic Formal Parameter Declaration --
5393 ------------------------------------------------
5395 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
5396 -- FORMAL_OBJECT_DECLARATION
5397 -- | FORMAL_TYPE_DECLARATION
5398 -- | FORMAL_SUBPROGRAM_DECLARATION
5399 -- | FORMAL_PACKAGE_DECLARATION
5401 ---------------------------------
5402 -- 12.3 Generic Instantiation --
5403 ---------------------------------
5405 -- GENERIC_INSTANTIATION ::=
5406 -- package DEFINING_PROGRAM_UNIT_NAME is
5407 -- new generic_package_NAME [GENERIC_ACTUAL_PART];
5408 -- | procedure DEFINING_PROGRAM_UNIT_NAME is
5409 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART];
5410 -- | function DEFINING_DESIGNATOR is
5411 -- new generic_function_NAME [GENERIC_ACTUAL_PART];
5413 -- N_Package_Instantiation
5414 -- Sloc points to PACKAGE
5415 -- Defining_Unit_Name (Node1)
5417 -- Generic_Associations (List3) (set to No_List if no
5418 -- generic actual part)
5419 -- Parent_Spec (Node4-Sem)
5420 -- Instance_Spec (Node5-Sem)
5421 -- ABE_Is_Certain (Flag18-Sem)
5423 -- N_Procedure_Instantiation
5424 -- Sloc points to PROCEDURE
5425 -- Defining_Unit_Name (Node1)
5427 -- Parent_Spec (Node4-Sem)
5428 -- Generic_Associations (List3) (set to No_List if no
5429 -- generic actual part)
5430 -- Instance_Spec (Node5-Sem)
5431 -- ABE_Is_Certain (Flag18-Sem)
5433 -- N_Function_Instantiation
5434 -- Sloc points to FUNCTION
5435 -- Defining_Unit_Name (Node1)
5437 -- Generic_Associations (List3) (set to No_List if no
5438 -- generic actual part)
5439 -- Parent_Spec (Node4-Sem)
5440 -- Instance_Spec (Node5-Sem)
5441 -- ABE_Is_Certain (Flag18-Sem)
5443 ------------------------------
5444 -- 12.3 Generic Actual Part --
5445 ------------------------------
5447 -- GENERIC_ACTUAL_PART ::=
5448 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
5450 -------------------------------
5451 -- 12.3 Generic Association --
5452 -------------------------------
5454 -- GENERIC_ASSOCIATION ::=
5455 -- [generic_formal_parameter_SELECTOR_NAME =>]
5456 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER
5458 -- Note: unlike the procedure call case, a generic association node
5459 -- is generated for every association, even if no formal is present.
5460 -- In this case the parser will leave the Selector_Name field set
5461 -- to Empty, to be filled in later by the semantic pass.
5463 -- N_Generic_Association
5464 -- Sloc points to first token of generic association
5465 -- Selector_Name (Node2) (set to Empty if no formal
5466 -- parameter selector name)
5467 -- Explicit_Generic_Actual_Parameter (Node1)
5469 ---------------------------------------------
5470 -- 12.3 Explicit Generic Actual Parameter --
5471 ---------------------------------------------
5473 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
5474 -- EXPRESSION | variable_NAME | subprogram_NAME
5475 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
5477 -------------------------------------
5478 -- 12.4 Formal Object Declaration --
5479 -------------------------------------
5481 -- FORMAL_OBJECT_DECLARATION ::=
5482 -- DEFINING_IDENTIFIER_LIST :
5483 -- MODE SUBTYPE_MARK [:= DEFAULT_EXPRESSION];
5485 -- Although the syntax allows multiple identifiers in the list, the
5486 -- semantics is as though successive declarations were given with
5487 -- identical type definition and expression components. To simplify
5488 -- semantic processing, the parser represents a multiple declaration
5489 -- case as a sequence of single declarations, using the More_Ids and
5490 -- Prev_Ids flags to preserve the original source form as described
5491 -- in the section on "Handling of Defining Identifier Lists".
5493 -- N_Formal_Object_Declaration
5494 -- Sloc points to first identifier
5495 -- Defining_Identifier (Node1)
5496 -- In_Present (Flag15)
5497 -- Out_Present (Flag17)
5498 -- Subtype_Mark (Node4)
5499 -- Expression (Node3) (set to Empty if no default expression)
5500 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5501 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5503 -----------------------------------
5504 -- 12.5 Formal Type Declaration --
5505 -----------------------------------
5507 -- FORMAL_TYPE_DECLARATION ::=
5508 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
5509 -- is FORMAL_TYPE_DEFINITION;
5511 -- N_Formal_Type_Declaration
5512 -- Sloc points to TYPE
5513 -- Defining_Identifier (Node1)
5514 -- Formal_Type_Definition (Node3)
5515 -- Discriminant_Specifications (List4) (set to No_List if no
5516 -- discriminant part)
5517 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5519 ----------------------------------
5520 -- 12.5 Formal type definition --
5521 ----------------------------------
5523 -- FORMAL_TYPE_DEFINITION ::=
5524 -- FORMAL_PRIVATE_TYPE_DEFINITION
5525 -- | FORMAL_DERIVED_TYPE_DEFINITION
5526 -- | FORMAL_DISCRETE_TYPE_DEFINITION
5527 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
5528 -- | FORMAL_MODULAR_TYPE_DEFINITION
5529 -- | FORMAL_FLOATING_POINT_DEFINITION
5530 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
5531 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
5532 -- | FORMAL_ARRAY_TYPE_DEFINITION
5533 -- | FORMAL_ACCESS_TYPE_DEFINITION
5535 ---------------------------------------------
5536 -- 12.5.1 Formal Private Type Definition --
5537 ---------------------------------------------
5539 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
5540 -- [[abstract] tagged] [limited] private
5542 -- Note: TAGGED is not allowed in Ada 83 mode
5544 -- N_Formal_Private_Type_Definition
5545 -- Sloc points to PRIVATE
5546 -- Abstract_Present (Flag4)
5547 -- Tagged_Present (Flag15)
5548 -- Limited_Present (Flag17)
5550 --------------------------------------------
5551 -- 12.5.1 Formal Derived Type Definition --
5552 --------------------------------------------
5554 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
5555 -- [abstract] new SUBTYPE_MARK [with private]
5557 -- Note: this construct is not allowed in Ada 83 mode
5559 -- N_Formal_Derived_Type_Definition
5560 -- Sloc points to NEW
5561 -- Subtype_Mark (Node4)
5562 -- Private_Present (Flag15)
5563 -- Abstract_Present (Flag4)
5565 ---------------------------------------------
5566 -- 12.5.2 Formal Discrete Type Definition --
5567 ---------------------------------------------
5569 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
5571 -- N_Formal_Discrete_Type_Definition
5574 ---------------------------------------------------
5575 -- 12.5.2 Formal Signed Integer Type Definition --
5576 ---------------------------------------------------
5578 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
5580 -- N_Formal_Signed_Integer_Type_Definition
5581 -- Sloc points to RANGE
5583 --------------------------------------------
5584 -- 12.5.2 Formal Modular Type Definition --
5585 --------------------------------------------
5587 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
5589 -- N_Formal_Modular_Type_Definition
5590 -- Sloc points to MOD
5592 ----------------------------------------------
5593 -- 12.5.2 Formal Floating Point Definition --
5594 ----------------------------------------------
5596 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
5598 -- N_Formal_Floating_Point_Definition
5599 -- Sloc points to DIGITS
5601 ----------------------------------------------------
5602 -- 12.5.2 Formal Ordinary Fixed Point Definition --
5603 ----------------------------------------------------
5605 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
5607 -- N_Formal_Ordinary_Fixed_Point_Definition
5608 -- Sloc points to DELTA
5610 ---------------------------------------------------
5611 -- 12.5.2 Formal Decimal Fixed Point Definition --
5612 ---------------------------------------------------
5614 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
5616 -- Note: formal decimal fixed point definition not allowed in Ada 83
5618 -- N_Formal_Decimal_Fixed_Point_Definition
5619 -- Sloc points to DELTA
5621 ------------------------------------------
5622 -- 12.5.3 Formal Array Type Definition --
5623 ------------------------------------------
5625 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
5627 -------------------------------------------
5628 -- 12.5.4 Formal Access Type Definition --
5629 -------------------------------------------
5631 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
5633 -----------------------------------------
5634 -- 12.6 Formal Subprogram Declaration --
5635 -----------------------------------------
5637 -- FORMAL_SUBPROGRAM_DECLARATION ::=
5638 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT];
5640 -- N_Formal_Subprogram_Declaration
5641 -- Sloc points to WITH
5642 -- Specification (Node1)
5643 -- Default_Name (Node2) (set to Empty if no subprogram default)
5644 -- Box_Present (Flag15)
5646 -- Note: if no subprogram default is present, then Name is set
5647 -- to Empty, and Box_Present is False.
5649 ------------------------------
5650 -- 12.6 Subprogram Default --
5651 ------------------------------
5653 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
5655 -- There is no separate node in the tree for a subprogram default.
5656 -- Instead the parent (N_Formal_Subprogram_Declaration) node contains
5657 -- the default name or box indication, as needed.
5659 ------------------------
5660 -- 12.6 Default Name --
5661 ------------------------
5663 -- DEFAULT_NAME ::= NAME
5665 --------------------------------------
5666 -- 12.7 Formal Package Declaration --
5667 --------------------------------------
5669 -- FORMAL_PACKAGE_DECLARATION ::=
5670 -- with package DEFINING_IDENTIFIER
5671 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART;
5673 -- Note: formal package declarations not allowed in Ada 83 mode
5675 -- N_Formal_Package_Declaration
5676 -- Sloc points to WITH
5677 -- Defining_Identifier (Node1)
5679 -- Generic_Associations (List3) (set to No_List if (<>) case or
5680 -- empty generic actual part)
5681 -- Box_Present (Flag15)
5682 -- Instance_Spec (Node5-Sem)
5683 -- ABE_Is_Certain (Flag18-Sem)
5685 --------------------------------------
5686 -- 12.7 Formal Package Actual Part --
5687 --------------------------------------
5689 -- FORMAL_PACKAGE_ACTUAL_PART ::=
5690 -- (<>) | [GENERIC_ACTUAL_PART]
5692 -- There is no explicit node in the tree for a formal package
5693 -- actual part. Instead the information appears in the parent node
5694 -- (i.e. the formal package declaration node itself).
5696 ---------------------------------
5697 -- 13.1 Representation clause --
5698 ---------------------------------
5700 -- REPRESENTATION_CLAUSE ::=
5701 -- ATTRIBUTE_DEFINITION_CLAUSE
5702 -- | ENUMERATION_REPRESENTATION_CLAUSE
5703 -- | RECORD_REPRESENTATION_CLAUSE
5706 ----------------------
5707 -- 13.1 Local Name --
5708 ----------------------
5712 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
5713 -- | library_unit_NAME
5715 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
5716 -- as an attribute reference, which has essentially the same form.
5718 ---------------------------------------
5719 -- 13.3 Attribute definition clause --
5720 ---------------------------------------
5722 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
5723 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
5724 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
5726 -- In Ada 83, the expression must be a simple expression and the
5727 -- local name must be a direct name.
5729 -- Note: the only attribute definition clause that is processed by
5730 -- gigi is an address clause. For all other cases, the information
5731 -- is extracted by the front end and either results in setting entity
5732 -- information, e.g. Esize for the Size clause, or in appropriate
5733 -- expansion actions (e.g. in the case of Storage_Size).
5735 -- For an address clause, Gigi constructs the appropriate addressing
5736 -- code. It also ensures that no aliasing optimizations are made
5737 -- for the object for which the address clause appears.
5739 -- Note: for an address clause used to achieve an overlay:
5743 -- for B'Address use A'Address;
5745 -- the above rule means that Gigi will ensure that no optimizations
5746 -- will be made for B that would violate the implementation advice
5747 -- of RM 13.3(19). However, this advice applies only to B and not
5748 -- to A, which seems unfortunate. The GNAT front end will mark the
5749 -- object A as volatile to also prevent unwanted optimization
5750 -- assumptions based on no aliasing being made for B.
5752 -- N_Attribute_Definition_Clause
5753 -- Sloc points to FOR
5754 -- Name (Node2) the local name
5755 -- Chars (Name1) the identifier name from the attribute designator
5756 -- Expression (Node3) the expression or name
5757 -- Next_Rep_Item (Node4-Sem)
5758 -- From_At_Mod (Flag4-Sem)
5759 -- Check_Address_Alignment (Flag11-Sem)
5761 ---------------------------------------------
5762 -- 13.4 Enumeration representation clause --
5763 ---------------------------------------------
5765 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
5766 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
5768 -- In Ada 83, the name must be a direct name
5770 -- N_Enumeration_Representation_Clause
5771 -- Sloc points to FOR
5772 -- Identifier (Node1) direct name
5773 -- Array_Aggregate (Node3)
5774 -- Next_Rep_Item (Node4-Sem)
5776 ---------------------------------
5777 -- 13.4 Enumeration aggregate --
5778 ---------------------------------
5780 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
5782 ------------------------------------------
5783 -- 13.5.1 Record representation clause --
5784 ------------------------------------------
5786 -- RECORD_REPRESENTATION_CLAUSE ::=
5787 -- for first_subtype_LOCAL_NAME use
5788 -- record [MOD_CLAUSE]
5789 -- {COMPONENT_CLAUSE}
5792 -- Gigi restriction: Mod_Clause is always Empty (if present it is
5793 -- replaced by a corresponding Alignment attribute definition clause).
5795 -- Note: Component_Clauses can include pragmas
5797 -- N_Record_Representation_Clause
5798 -- Sloc points to FOR
5799 -- Identifier (Node1) direct name
5800 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
5801 -- Component_Clauses (List3)
5802 -- Next_Rep_Item (Node4-Sem)
5804 ------------------------------
5805 -- 13.5.1 Component clause --
5806 ------------------------------
5808 -- COMPONENT_CLAUSE ::=
5809 -- component_LOCAL_NAME at POSITION
5810 -- range FIRST_BIT .. LAST_BIT;
5812 -- N_Component_Clause
5813 -- Sloc points to AT
5814 -- Component_Name (Node1) points to Name or Attribute_Reference
5816 -- First_Bit (Node3)
5819 ----------------------
5820 -- 13.5.1 Position --
5821 ----------------------
5823 -- POSITION ::= static_EXPRESSION
5825 -----------------------
5826 -- 13.5.1 First_Bit --
5827 -----------------------
5829 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
5831 ----------------------
5832 -- 13.5.1 Last_Bit --
5833 ----------------------
5835 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
5837 --------------------------
5838 -- 13.8 Code statement --
5839 --------------------------
5841 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
5843 -- Note: in GNAT, the qualified expression has the form
5845 -- Asm_Insn'(Asm (...));
5849 -- Asm_Insn'(Asm_Volatile (...))
5851 -- See package System.Machine_Code in file s-maccod.ads for details
5852 -- on the allowed parameters to Asm[_Volatile]. There are two ways
5853 -- this node can arise, as a code statement, in which case the
5854 -- expression is the qualified expression, or as a result of the
5855 -- expansion of an intrinsic call to the Asm or Asm_Input procedure.
5858 -- Sloc points to first token of the expression
5859 -- Expression (Node3)
5861 -- Note: package Exp_Code contains an abstract functional interface
5862 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
5864 ------------------------
5865 -- 13.12 Restriction --
5866 ------------------------
5869 -- restriction_IDENTIFIER
5870 -- | restriction_parameter_IDENTIFIER => EXPRESSION
5872 -- There is no explicit node for restrictions. Instead the restriction
5873 -- appears in normal pragma syntax as a pragma argument association,
5874 -- which has the same syntactic form.
5876 --------------------------
5877 -- B.2 Shift Operators --
5878 --------------------------
5880 -- Calls to the intrinsic shift functions are converted to one of
5881 -- the following shift nodes, which have the form of normal binary
5882 -- operator names. Note that for a given shift operation, one node
5883 -- covers all possible types, as for normal operators.
5885 -- Note: it is perfectly permissible for the expander to generate
5886 -- shift operation nodes directly, in which case they will be analyzed
5887 -- and parsed in the usual manner.
5889 -- Sprint syntax: shift-function-name!(expr, count)
5891 -- Note: the Left_Opnd field holds the first argument (the value to
5892 -- be shifted). The Right_Opnd field holds the second argument (the
5893 -- shift count). The Chars field is the name of the intrinsic function.
5896 -- Sloc points to the function name
5897 -- plus fields for binary operator
5898 -- plus fields for expression
5899 -- Shift_Count_OK (Flag4-Sem)
5901 -- N_Op_Rotate_Right
5902 -- Sloc points to the function name
5903 -- plus fields for binary operator
5904 -- plus fields for expression
5905 -- Shift_Count_OK (Flag4-Sem)
5908 -- Sloc points to the function name
5909 -- plus fields for binary operator
5910 -- plus fields for expression
5911 -- Shift_Count_OK (Flag4-Sem)
5913 -- N_Op_Shift_Right_Arithmetic
5914 -- Sloc points to the function name
5915 -- plus fields for binary operator
5916 -- plus fields for expression
5917 -- Shift_Count_OK (Flag4-Sem)
5920 -- Sloc points to the function name
5921 -- plus fields for binary operator
5922 -- plus fields for expression
5923 -- Shift_Count_OK (Flag4-Sem)
5925 --------------------------
5926 -- Obsolescent Features --
5927 --------------------------
5929 -- The syntax descriptions and tree nodes for obsolescent features are
5930 -- grouped together, corresponding to their location in appendix I in
5931 -- the RM. However, parsing and semantic analysis for these constructs
5932 -- is located in an appropriate chapter (see individual notes).
5934 ---------------------------
5935 -- J.3 Delta Constraint --
5936 ---------------------------
5938 -- Note: the parse routine for this construct is located in section
5939 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
5940 -- where delta constraint logically belongs.
5942 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
5944 -- N_Delta_Constraint
5945 -- Sloc points to DELTA
5946 -- Delta_Expression (Node3)
5947 -- Range_Constraint (Node4) (set to Empty if not present)
5949 --------------------
5951 --------------------
5953 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
5955 -- Note: the parse routine for this construct is located in Par-Ch13,
5956 -- and the semantic analysis is in Sem_Ch13, where at clause logically
5957 -- belongs if it were not obsolescent.
5959 -- Note: in Ada 83 the expression must be a simple expression
5961 -- Gigi restriction: This node never appears, it is rewritten as an
5962 -- address attribute definition clause.
5965 -- Sloc points to FOR
5966 -- Identifier (Node1)
5967 -- Expression (Node3)
5969 ---------------------
5970 -- J.8 Mod clause --
5971 ---------------------
5973 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
5975 -- Note: the parse routine for this construct is located in Par-Ch13,
5976 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
5977 -- belongs if it were not obsolescent.
5979 -- Note: in Ada 83, the expression must be a simple expression
5981 -- Gigi restriction: this node never appears. It is replaced
5982 -- by a corresponding Alignment attribute definition clause.
5984 -- Note: pragmas can appear before and after the MOD_CLAUSE since
5985 -- its name has "clause" in it. This is rather strange, but is quite
5986 -- definitely specified. The pragmas before are collected in the
5987 -- Pragmas_Before field of the mod clause node itself, and pragmas
5988 -- after are simply swallowed up in the list of component clauses.
5991 -- Sloc points to AT
5992 -- Expression (Node3)
5993 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
5995 --------------------
5996 -- Semantic Nodes --
5997 --------------------
5999 -- These semantic nodes are used to hold additional semantic information.
6000 -- They are inserted into the tree as a result of semantic processing.
6001 -- Although there are no legitimate source syntax constructions that
6002 -- correspond directly to these nodes, we need a source syntax for the
6003 -- reconstructed tree printed by Sprint, and the node descriptions here
6004 -- show this syntax.
6006 ----------------------------
6007 -- Conditional Expression --
6008 ----------------------------
6010 -- This node is used to represent an expression corresponding to the
6011 -- C construct (condition ? then-expression : else_expression), where
6012 -- Expressions is a three element list, whose first expression is the
6013 -- condition, and whose second and third expressions are the then and
6014 -- else expressions respectively.
6016 -- Note: the Then_Actions and Else_Actions fields are always set to
6017 -- No_List in the tree passed to Gigi. These fields are used only
6018 -- for temporary processing purposes in the expander.
6020 -- Sprint syntax: (if expr then expr else expr)
6022 -- N_Conditional_Expression
6023 -- Sloc points to related node
6024 -- Expressions (List1)
6025 -- Then_Actions (List2-Sem)
6026 -- Else_Actions (List3-Sem)
6027 -- plus fields for expression
6029 -- Note: in the case where a debug source file is generated, the Sloc
6030 -- for this node points to the IF keyword in the Sprint file output.
6036 -- The N_Expanded_Name node is used to represent a selected component
6037 -- name that has been resolved to an expanded name. The semantic phase
6038 -- replaces N_Selected_Component nodes that represent names by the use
6039 -- of this node, leaving the N_Selected_Component node used only when
6040 -- the prefix is a record or protected type.
6042 -- The fields of the N_Expanded_Name node are layed out identically
6043 -- to those of the N_Selected_Component node, allowing conversion of
6044 -- an expanded name node to a selected component node to be done
6045 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
6047 -- There is no special sprint syntax for an expanded name.
6050 -- Sloc points to the period
6051 -- Chars (Name1) copy of Chars field of selector name
6053 -- Selector_Name (Node2)
6054 -- Entity (Node4-Sem)
6055 -- Associated_Node (Node4-Sem)
6056 -- Redundant_Use (Flag13-Sem)
6057 -- Has_Private_View (Flag11-Sem) set in generic units.
6058 -- plus fields for expression
6060 --------------------
6061 -- Free Statement --
6062 --------------------
6064 -- The N_Free_Statement node is generated as a result of a call to an
6065 -- instantiation of Unchecked_Deallocation. The instantiation of this
6066 -- generic is handled specially and generates this node directly.
6068 -- Sprint syntax: free expression
6071 -- Sloc is copied from the unchecked deallocation call
6072 -- Expression (Node3) argument to unchecked deallocation call
6073 -- Storage_Pool (Node1-Sem)
6074 -- Procedure_To_Call (Node4-Sem)
6076 -- Note: in the case where a debug source file is generated, the Sloc
6077 -- for this node points to the FREE keyword in the Sprint file output.
6083 -- This node marks the point in a declarative part at which an entity
6084 -- declared therein becomes frozen. The expander places initialization
6085 -- procedures for types at those points. Gigi uses the freezing point
6086 -- to elaborate entities that may depend on previous private types.
6088 -- See the section in Einfo "Delayed Freezing and Elaboration" for
6089 -- a full description of the use of this node.
6091 -- The Entity field points back to the entity for the type (whose
6092 -- Freeze_Node field points back to this freeze node).
6094 -- The Actions field contains a list of declarations and statements
6095 -- generated by the expander which are associated with the freeze
6096 -- node, and are elaborated as though the freeze node were replaced
6097 -- by this sequence of actions.
6099 -- Note: the Sloc field in the freeze node references a construct
6100 -- associated with the freezing point. This is used for posting
6101 -- messages in some error/warning situations, e.g. the case where
6102 -- a primitive operation of a tagged type is declared too late.
6104 -- Sprint syntax: freeze entity-name [
6109 -- Sloc points near freeze point (see above special note)
6110 -- Entity (Node4-Sem)
6111 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
6112 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
6113 -- Actions (List1) (set to No_List if no freeze actions)
6114 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
6116 -- The Actions field holds actions associated with the freeze. These
6117 -- actions are elaborated at the point where the type is frozen.
6119 -- Note: in the case where a debug source file is generated, the Sloc
6120 -- for this node points to the FREEZE keyword in the Sprint file output.
6122 --------------------------------
6123 -- Implicit Label Declaration --
6124 --------------------------------
6126 -- An implicit label declaration is created for every occurrence of a
6127 -- label on a statement or a label on a block or loop. It is chained
6128 -- in the declarations of the innermost enclosing block as specified
6129 -- in RM section 5.1 (3).
6131 -- The Defining_Identifier is the actual identifier for the
6132 -- statement identifier. Note that the occurrence of the label
6133 -- is a reference, NOT the defining occurrence. The defining
6134 -- occurrence occurs at the head of the innermost enclosing
6135 -- block, and is represented by this node.
6137 -- Note: from the grammar, this might better be called an implicit
6138 -- statement identifier declaration, but the term we choose seems
6139 -- friendlier, since at least informally statement identifiers are
6140 -- called labels in both cases (i.e. when used in labels, and when
6141 -- used as the identifiers of blocks and loops).
6143 -- Note: although this is logically a semantic node, since it does
6144 -- not correspond directly to a source syntax construction, these
6145 -- nodes are actually created by the parser in a post pass done just
6146 -- after parsing is complete, before semantic analysis is started (see
6147 -- the Par.Labl subunit in file par-labl.adb).
6149 -- Sprint syntax: labelname : label;
6151 -- N_Implicit_Label_Declaration
6152 -- Sloc points to the << of the label
6153 -- Defining_Identifier (Node1)
6154 -- Label_Construct (Node2-Sem)
6156 -- Note: in the case where a debug source file is generated, the Sloc
6157 -- for this node points to the label name in the generated declaration.
6159 ---------------------
6160 -- Itype_Reference --
6161 ---------------------
6163 -- This node is used to create a reference to an Itype. The only
6164 -- purpose is to make sure that the Itype is defined if this is the
6167 -- A typical use of this node is when an Itype is to be referenced in
6168 -- two branches of an if statement. In this case it is important that
6169 -- the first use of the Itype not be inside the conditional, since
6170 -- then it might not be defined if the wrong branch of the if is
6171 -- taken in the case where the definition generates elaboration code.
6173 -- The Itype field points to the referenced Itype
6175 -- sprint syntax: reference itype-name
6177 -- N_Itype_Reference
6178 -- Sloc points to the node generating the reference
6179 -- Itype (Node1-Sem)
6181 -- Note: in the case where a debug source file is generated, the Sloc
6182 -- for this node points to the REFERENCE keyword in the file output.
6184 ---------------------
6185 -- Raise_xxx_Error --
6186 ---------------------
6188 -- One of these nodes is created during semantic analysis to replace
6189 -- a node for an expression that is determined to definitely raise
6190 -- the corresponding exception.
6192 -- The N_Raise_xxx_Error node may also stand alone in place
6193 -- of a declaration or statement, in which case it simply causes
6194 -- the exception to be raised (i.e. it is equivalent to a raise
6195 -- statement that raises the corresponding exception). This use
6196 -- is distinguished by the fact that the Etype in this case is
6197 -- Standard_Void_Type, In the subexprssion case, the Etype is the
6198 -- same as the type of the subexpression which it replaces.
6200 -- If Condition is empty, then the raise is unconditional. If the
6201 -- Condition field is non-empty, it is a boolean expression which
6202 -- is first evaluated, and the exception is raised only if the
6203 -- value of the expression is True. In the unconditional case, the
6204 -- creation of this node is usually accompanied by a warning message
6205 -- error. The creation of this node will usually be accompanied by a
6206 -- message (unless it appears within the right operand of a short
6207 -- circuit form whose left argument is static and decisively
6208 -- eliminates elaboration of the raise operation.
6210 -- The exception is generated with a message that contains the
6211 -- file name and line number, and then appended text. The Reason
6212 -- code shows the text to be added. The Reason code is an element
6213 -- of the type Types.RT_Exception_Code, and indicates both the
6214 -- message to be added, and the exception to be raised (which must
6215 -- match the node type). The value is stored by storing a Uint which
6216 -- is the Pos value of the enumeration element in this type.
6218 -- Gigi restriction: This expander ensures that the type of the
6219 -- Condition field is always Standard.Boolean, even if the type
6220 -- in the source is some non-standard boolean type.
6222 -- Sprint syntax: [xxx_error "msg"]
6223 -- or: [xxx_error when condition "msg"]
6225 -- N_Raise_Constraint_Error
6226 -- Sloc references related construct
6227 -- Condition (Node1) (set to Empty if no condition)
6229 -- plus fields for expression
6231 -- N_Raise_Program_Error
6232 -- Sloc references related construct
6233 -- Condition (Node1) (set to Empty if no condition)
6235 -- plus fields for expression
6237 -- N_Raise_Storage_Error
6238 -- Sloc references related construct
6239 -- Condition (Node1) (set to Empty if no condition)
6241 -- plus fields for expression
6243 -- Note: Sloc is copied from the expression generating the exception.
6244 -- In the case where a debug source file is generated, the Sloc for
6245 -- this node points to the left bracket in the Sprint file output.
6251 -- For a number of purposes, we need to construct references to objects.
6252 -- These references are subsequently treated as normal access values.
6253 -- An example is the construction of the parameter block passed to a
6254 -- task entry. The N_Reference node is provided for this purpose. It is
6255 -- similar in effect to the use of the Unrestricted_Access attribute,
6256 -- and like Unrestricted_Access can be applied to objects which would
6257 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
6258 -- objects which are not aliased, and slices). In addition it can be
6259 -- applied to composite type values as well as objects, including string
6260 -- values and aggregates.
6262 -- Note: we use the Prefix field for this expression so that the
6263 -- resulting node can be treated using common code with the attribute
6264 -- nodes for the 'Access and related attributes. Logically it would make
6265 -- more sense to call it an Expression field, but then we would have to
6266 -- special case the treatment of the N_Reference node.
6268 -- Sprint syntax: prefix'reference
6271 -- Sloc is copied from the expression
6273 -- plus fields for expression
6275 -- Note: in the case where a debug source file is generated, the Sloc
6276 -- for this node points to the quote in the Sprint file output.
6278 ---------------------
6279 -- Subprogram_Info --
6280 ---------------------
6282 -- This node generates the appropriate Subprogram_Info value for a
6283 -- given procedure. See Ada.Exceptions for further details
6285 -- Sprint syntax: subprog'subprogram_info
6287 -- N_Subprogram_Info
6288 -- Sloc points to the entity for the procedure
6289 -- Identifier (Node1) identifier referencing the procedure
6290 -- Etype (Node5-Sem) type (always set to Ada.Exceptions.Code_Loc
6292 -- Note: in the case where a debug source file is generated, the Sloc
6293 -- for this node points to the quote in the Sprint file output.
6295 --------------------------
6296 -- Unchecked Expression --
6297 --------------------------
6299 -- An unchecked expression is one that must be analyzed and resolved
6300 -- with all checks off, regardless of the current setting of scope
6303 -- Sprint syntax: `(expression).
6305 -- Note: this node is always removed from the tree (and replaced by
6306 -- its constituent expression) on completion of analysis, so it only
6307 -- appears in intermediate trees, and will never be seen by Gigi.
6309 -- N_Unchecked_Expression
6310 -- Sloc is a copy of the Sloc of the expression
6311 -- Expression (Node3)
6312 -- plus fields for expression
6314 -- Note: in the case where a debug source file is generated, the Sloc
6315 -- for this node points to the back quote in the Sprint file output.
6317 -------------------------------
6318 -- Unchecked Type Conversion --
6319 -------------------------------
6321 -- An unchecked type conversion node represents the semantic action
6322 -- corresponding to a call to an instantiation of Unchecked_Conversion.
6323 -- It is generated as a result of actual use of Unchecked_Conversion
6324 -- and also the expander generates unchecked type conversion nodes
6325 -- directly for expansion of complex semantic actions.
6327 -- Note: an unchecked type conversion is a variable as far as the
6328 -- semantics are concerned, which is convenient for the expander.
6329 -- This does not change what Ada source programs are legal, since
6330 -- clearly a function call to an instantiation of Unchecked_Conversion
6331 -- is not a variable in any case.
6333 -- Sprint syntax: subtype-mark!(expression).
6335 -- N_Unchecked_Type_Conversion
6336 -- Sloc points to related node in source
6337 -- Subtype_Mark (Node4)
6338 -- Expression (Node3)
6339 -- Kill_Range_Check (Flag11-Sem)
6340 -- No_Truncation (Flag17-Sem)
6341 -- plus fields for expression
6343 -- Note: in the case where a debug source file is generated, the Sloc
6344 -- for this node points to the exclamation in the Sprint file output.
6346 -----------------------------------
6347 -- Validate_Unchecked_Conversion --
6348 -----------------------------------
6350 -- The front end does most of the validation of unchecked conversion,
6351 -- including checking sizes (this is done after the back end is called
6352 -- to take advantage of back-annotation of calculated sizes).
6354 -- The front end also deals with specific cases that are not allowed
6355 -- e.g. involving unconstrained array types.
6357 -- For the case of the standard gigi backend, this means that all
6358 -- checks are done in the front-end.
6360 -- However, in the case of specialized back-ends, notably the JVM
6361 -- backend for JGNAT, additional requirements and restrictions apply
6362 -- to unchecked conversion, and these are most conveniently performed
6363 -- in the specialized back-end.
6365 -- To accommodate this requirement, for such back ends, the following
6366 -- special node is generated recording an unchecked conversion that
6367 -- needs to be validated. The back end should post an appropriate
6368 -- error message if the unchecked conversion is invalid or warrants
6369 -- a special warning message.
6371 -- Source_Type and Target_Type point to the entities for the two
6372 -- types involved in the unchecked conversion instantiation that
6373 -- is to be validated.
6375 -- Sprint syntax: validate Unchecked_Conversion (source, target);
6377 -- N_Validate_Unchecked_Conversion
6378 -- Sloc points to instantiation (location for warning message)
6379 -- Source_Type (Node1-Sem)
6380 -- Target_Type (Node2-Sem)
6382 -- Note: in the case where a debug source file is generated, the Sloc
6383 -- for this node points to the VALIDATE keyword in the file output.
6389 -- Used as the contents of the Nkind field of the dummy Empty node
6390 -- and in some other situations to indicate an uninitialized value.
6393 -- Chars (Name1) is set to No_Name
6399 -- Used as the contents of the Nkind field of the dummy Error node.
6400 -- Has an Etype field, which gets set to Any_Type later on, to help
6401 -- error recovery (Error_Posted is also set in the Error node).
6404 -- Chars (Name1) is set to Error_Name
6405 -- Etype (Node5-Sem)
6407 --------------------------
6408 -- Node Type Definition --
6409 --------------------------
6411 -- The following is the definition of the Node_Kind type. As previously
6412 -- discussed, this is separated off to allow rearrangement of the order
6413 -- to facilitiate definition of subtype ranges. The comments show the
6414 -- subtype classes which apply to each set of node kinds. The first
6415 -- entry in the comment characterizes the following list of nodes.
6420 -- N_Representation_Clause
6423 N_Enumeration_Representation_Clause,
6425 N_Record_Representation_Clause,
6427 -- N_Representation_Clause, N_Has_Chars
6428 N_Attribute_Definition_Clause,
6433 N_Pragma_Argument_Association,
6438 -- N_Entity, N_Has_Etype, N_Has_Chars
6439 N_Defining_Character_Literal,
6440 N_Defining_Identifier,
6441 N_Defining_Operator_Symbol,
6443 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
6446 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6447 -- N_Has_Chars, N_Has_Entity
6451 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6452 -- N_Has_Chars, N_Has_Entity
6453 N_Character_Literal,
6455 -- N_Binary_Op, N_Op, N_Subexpr,
6456 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6462 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
6463 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6470 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6471 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6474 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6475 -- 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
6489 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
6490 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
6495 N_Op_Shift_Right_Arithmetic,
6497 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
6498 -- N_Has_Chars, N_Has_Entity
6504 -- N_Subexpr, N_Has_Etype, N_Has_Entity
6505 N_Attribute_Reference,
6507 -- N_Subexpr, N_Has_Etype
6509 N_Conditional_Expression,
6510 N_Explicit_Dereference,
6513 N_Indexed_Component,
6518 N_Procedure_Call_Statement,
6519 N_Qualified_Expression,
6521 -- N_Raise_xxx_Error, N_Subexpr, N_Has_Etype
6523 N_Raise_Constraint_Error,
6524 N_Raise_Program_Error,
6525 N_Raise_Storage_Error,
6527 -- N_Subexpr, N_Has_Etype
6531 N_Extension_Aggregate,
6535 N_Selected_Component,
6540 N_Unchecked_Expression,
6541 N_Unchecked_Type_Conversion,
6544 N_Subtype_Indication,
6547 N_Component_Declaration,
6548 N_Entry_Declaration,
6549 N_Formal_Object_Declaration,
6550 N_Formal_Type_Declaration,
6551 N_Full_Type_Declaration,
6552 N_Incomplete_Type_Declaration,
6553 N_Loop_Parameter_Specification,
6554 N_Object_Declaration,
6555 N_Protected_Type_Declaration,
6556 N_Private_Extension_Declaration,
6557 N_Private_Type_Declaration,
6558 N_Subtype_Declaration,
6560 -- N_Subprogram_Specification, N_Declaration
6561 N_Function_Specification,
6562 N_Procedure_Specification,
6564 -- (nothing special)
6565 N_Entry_Index_Specification,
6568 -- N_Access_To_Subprogram_Definition
6569 N_Access_Function_Definition,
6570 N_Access_Procedure_Definition,
6572 -- N_Later_Decl_Item,
6573 N_Task_Type_Declaration,
6575 -- N_Body_Stub, N_Later_Decl_Item
6576 N_Package_Body_Stub,
6577 N_Protected_Body_Stub,
6578 N_Subprogram_Body_Stub,
6581 -- N_Generic_Instantiation, N_Later_Decl_Item
6582 N_Function_Instantiation,
6583 N_Package_Instantiation,
6584 N_Procedure_Instantiation,
6586 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
6590 -- N_Later_Decl_Item, N_Proper_Body
6594 -- N_Later_Decl_Item
6595 N_Implicit_Label_Declaration,
6596 N_Package_Declaration,
6597 N_Single_Task_Declaration,
6598 N_Subprogram_Declaration,
6599 N_Use_Package_Clause,
6601 -- N_Generic_Declaration, N_Later_Decl_Item
6602 N_Generic_Package_Declaration,
6603 N_Generic_Subprogram_Declaration,
6605 -- N_Array_Type_Definition
6606 N_Constrained_Array_Definition,
6607 N_Unconstrained_Array_Definition,
6609 -- N_Renaming_Declaration
6610 N_Exception_Renaming_Declaration,
6611 N_Object_Renaming_Declaration,
6612 N_Package_Renaming_Declaration,
6613 N_Subprogram_Renaming_Declaration,
6615 -- N_Generic_Renaming_Declarations, N_Renaming_Declaration
6616 N_Generic_Function_Renaming_Declaration,
6617 N_Generic_Package_Renaming_Declaration,
6618 N_Generic_Procedure_Renaming_Declaration,
6620 -- N_Statement_Other_Than_Procedure_Call
6623 N_Assignment_Statement,
6624 N_Asynchronous_Select,
6628 N_Conditional_Entry_Call,
6629 N_Delay_Relative_Statement,
6630 N_Delay_Until_Statement,
6631 N_Entry_Call_Statement,
6637 N_Requeue_Statement,
6642 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
6647 N_Accept_Alternative,
6648 N_Delay_Alternative,
6650 N_Entry_Body_Formal_Part,
6652 N_Terminate_Alternative,
6654 -- Other nodes (not part of any subtype class)
6656 N_Abstract_Subprogram_Declaration,
6657 N_Access_Definition,
6658 N_Access_To_Object_Definition,
6659 N_Case_Statement_Alternative,
6661 N_Compilation_Unit_Aux,
6662 N_Component_Association,
6663 N_Component_Definition,
6665 N_Derived_Type_Definition,
6666 N_Decimal_Fixed_Point_Definition,
6667 N_Defining_Program_Unit_Name,
6670 N_Digits_Constraint,
6671 N_Discriminant_Association,
6672 N_Discriminant_Specification,
6673 N_Enumeration_Type_Definition,
6675 N_Entry_Call_Alternative,
6676 N_Exception_Declaration,
6677 N_Exception_Handler,
6678 N_Floating_Point_Definition,
6679 N_Formal_Decimal_Fixed_Point_Definition,
6680 N_Formal_Derived_Type_Definition,
6681 N_Formal_Discrete_Type_Definition,
6682 N_Formal_Floating_Point_Definition,
6683 N_Formal_Modular_Type_Definition,
6684 N_Formal_Ordinary_Fixed_Point_Definition,
6685 N_Formal_Package_Declaration,
6686 N_Formal_Private_Type_Definition,
6687 N_Formal_Signed_Integer_Type_Definition,
6688 N_Formal_Subprogram_Declaration,
6689 N_Generic_Association,
6690 N_Handled_Sequence_Of_Statements,
6691 N_Index_Or_Discriminant_Constraint,
6694 N_Modular_Type_Definition,
6695 N_Number_Declaration,
6696 N_Ordinary_Fixed_Point_Definition,
6698 N_Package_Specification,
6699 N_Parameter_Association,
6700 N_Parameter_Specification,
6701 N_Protected_Definition,
6703 N_Real_Range_Specification,
6704 N_Record_Definition,
6705 N_Signed_Integer_Type_Definition,
6706 N_Single_Protected_Declaration,
6709 N_Triggering_Alternative,
6711 N_Validate_Unchecked_Conversion,
6718 for Node_Kind'Size use 8;
6719 -- The data structures in Atree assume this!
6721 ----------------------------
6722 -- Node Class Definitions --
6723 ----------------------------
6725 subtype N_Access_To_Subprogram_Definition is Node_Kind range
6726 N_Access_Function_Definition ..
6727 N_Access_Procedure_Definition;
6729 subtype N_Array_Type_Definition is Node_Kind range
6730 N_Constrained_Array_Definition ..
6731 N_Unconstrained_Array_Definition;
6733 subtype N_Binary_Op is Node_Kind range
6735 N_Op_Shift_Right_Arithmetic;
6737 subtype N_Body_Stub is Node_Kind range
6738 N_Package_Body_Stub ..
6741 subtype N_Declaration is Node_Kind range
6742 N_Component_Declaration ..
6743 N_Procedure_Specification;
6744 -- Note: this includes all constructs normally thought of as declarations
6745 -- except those which are separately grouped as later declarations.
6747 subtype N_Direct_Name is Node_Kind range
6749 N_Character_Literal;
6751 subtype N_Entity is Node_Kind range
6752 N_Defining_Character_Literal ..
6753 N_Defining_Operator_Symbol;
6755 subtype N_Generic_Declaration is Node_Kind range
6756 N_Generic_Package_Declaration ..
6757 N_Generic_Subprogram_Declaration;
6759 subtype N_Generic_Instantiation is Node_Kind range
6760 N_Function_Instantiation ..
6761 N_Procedure_Instantiation;
6763 subtype N_Generic_Renaming_Declaration is Node_Kind range
6764 N_Generic_Function_Renaming_Declaration ..
6765 N_Generic_Procedure_Renaming_Declaration;
6767 subtype N_Has_Chars is Node_Kind range
6768 N_Attribute_Definition_Clause ..
6771 subtype N_Has_Entity is Node_Kind range
6773 N_Attribute_Reference;
6774 -- Nodes that have Entity fields
6775 -- Warning: DOES NOT INCLUDE N_Freeze_Entity!
6777 subtype N_Has_Etype is Node_Kind range
6779 N_Subtype_Indication;
6781 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
6785 subtype N_Later_Decl_Item is Node_Kind range
6786 N_Task_Type_Declaration ..
6787 N_Generic_Subprogram_Declaration;
6788 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and
6789 -- includes only those items which can appear as later declarative
6790 -- items. This also includes N_Implicit_Label_Declaration which is
6791 -- not specifically in the grammar but may appear as a valid later
6792 -- declarative items. It does NOT include N_Pragma which can also
6793 -- appear among later declarative items. It does however include
6794 -- N_Protected_Body, which is a bit peculiar, but harmless since
6795 -- this cannot appear in Ada 83 mode anyway.
6797 subtype N_Op is Node_Kind range
6801 subtype N_Op_Boolean is Node_Kind range
6804 -- Binary operators which take operands of a boolean type, and yield
6805 -- a result of a boolean type.
6807 subtype N_Op_Compare is Node_Kind range
6811 subtype N_Op_Shift is Node_Kind range
6813 N_Op_Shift_Right_Arithmetic;
6815 subtype N_Proper_Body is Node_Kind range
6819 subtype N_Raise_xxx_Error is Node_Kind range
6820 N_Raise_Constraint_Error ..
6821 N_Raise_Storage_Error;
6823 subtype N_Renaming_Declaration is Node_Kind range
6824 N_Exception_Renaming_Declaration ..
6825 N_Generic_Procedure_Renaming_Declaration;
6827 subtype N_Representation_Clause is Node_Kind range
6829 N_Attribute_Definition_Clause;
6831 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
6832 N_Abort_Statement ..
6834 -- Note that this includes all statement types except for the cases of the
6835 -- N_Procedure_Call_Statement which is considered to be a subexpression
6836 -- (since overloading is possible, so it needs to go through the normal
6837 -- overloading resolution for expressions).
6839 subtype N_Has_Condition is Node_Kind range
6841 N_Terminate_Alternative;
6842 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
6844 subtype N_Subexpr is Node_Kind range
6846 N_Unchecked_Type_Conversion;
6847 -- Nodes with expression fields
6849 subtype N_Subprogram_Specification is Node_Kind range
6850 N_Function_Specification ..
6851 N_Procedure_Specification;
6853 subtype N_Unary_Op is Node_Kind range
6857 subtype N_Unit_Body is Node_Kind range
6861 ---------------------------
6862 -- Node Access Functions --
6863 ---------------------------
6865 -- The following functions return the contents of the indicated field of
6866 -- the node referenced by the argument, which is a Node_Id. They provide
6867 -- logical access to fields in the node which could be accessed using the
6868 -- Atree.Unchecked_Access package, but the idea is always to use these
6869 -- higher level routines which preserve strong typing. In debug mode,
6870 -- these routines check that they are being applied to an appropriate
6871 -- node, as well as checking that the node is in range.
6873 function ABE_Is_Certain
6874 (N : Node_Id) return Boolean; -- Flag18
6876 function Abort_Present
6877 (N : Node_Id) return Boolean; -- Flag15
6879 function Abortable_Part
6880 (N : Node_Id) return Node_Id; -- Node2
6882 function Abstract_Present
6883 (N : Node_Id) return Boolean; -- Flag4
6885 function Accept_Handler_Records
6886 (N : Node_Id) return List_Id; -- List5
6888 function Accept_Statement
6889 (N : Node_Id) return Node_Id; -- Node2
6891 function Access_Definition
6892 (N : Node_Id) return Node_Id; -- Node3
6894 function Access_Types_To_Process
6895 (N : Node_Id) return Elist_Id; -- Elist2
6898 (N : Node_Id) return List_Id; -- List1
6900 function Activation_Chain_Entity
6901 (N : Node_Id) return Node_Id; -- Node3
6903 function Acts_As_Spec
6904 (N : Node_Id) return Boolean; -- Flag4
6906 function Aggregate_Bounds
6907 (N : Node_Id) return Node_Id; -- Node3
6909 function Aliased_Present
6910 (N : Node_Id) return Boolean; -- Flag4
6913 (N : Node_Id) return Boolean; -- Flag11
6915 function All_Present
6916 (N : Node_Id) return Boolean; -- Flag15
6918 function Alternatives
6919 (N : Node_Id) return List_Id; -- List4
6921 function Ancestor_Part
6922 (N : Node_Id) return Node_Id; -- Node3
6924 function Array_Aggregate
6925 (N : Node_Id) return Node_Id; -- Node3
6927 function Assignment_OK
6928 (N : Node_Id) return Boolean; -- Flag15
6930 function Associated_Node
6931 (N : Node_Id) return Node_Id; -- Node4
6933 function At_End_Proc
6934 (N : Node_Id) return Node_Id; -- Node1
6936 function Attribute_Name
6937 (N : Node_Id) return Name_Id; -- Name2
6939 function Aux_Decls_Node
6940 (N : Node_Id) return Node_Id; -- Node5
6942 function Backwards_OK
6943 (N : Node_Id) return Boolean; -- Flag6
6945 function Bad_Is_Detected
6946 (N : Node_Id) return Boolean; -- Flag15
6949 (N : Node_Id) return Boolean; -- Flag5
6951 function Body_Required
6952 (N : Node_Id) return Boolean; -- Flag13
6954 function Body_To_Inline
6955 (N : Node_Id) return Node_Id; -- Node3
6957 function Box_Present
6958 (N : Node_Id) return Boolean; -- Flag15
6960 function Char_Literal_Value
6961 (N : Node_Id) return Char_Code; -- Char_Code2
6964 (N : Node_Id) return Name_Id; -- Name1
6966 function Check_Address_Alignment
6967 (N : Node_Id) return Boolean; -- Flag11
6969 function Choice_Parameter
6970 (N : Node_Id) return Node_Id; -- Node2
6973 (N : Node_Id) return List_Id; -- List1
6975 function Compile_Time_Known_Aggregate
6976 (N : Node_Id) return Boolean; -- Flag18
6978 function Component_Associations
6979 (N : Node_Id) return List_Id; -- List2
6981 function Component_Clauses
6982 (N : Node_Id) return List_Id; -- List3
6984 function Component_Definition
6985 (N : Node_Id) return Node_Id; -- Node4
6987 function Component_Items
6988 (N : Node_Id) return List_Id; -- List3
6990 function Component_List
6991 (N : Node_Id) return Node_Id; -- Node1
6993 function Component_Name
6994 (N : Node_Id) return Node_Id; -- Node1
6997 (N : Node_Id) return Node_Id; -- Node1
6999 function Condition_Actions
7000 (N : Node_Id) return List_Id; -- List3
7002 function Config_Pragmas
7003 (N : Node_Id) return List_Id; -- List4
7005 function Constant_Present
7006 (N : Node_Id) return Boolean; -- Flag17
7009 (N : Node_Id) return Node_Id; -- Node3
7011 function Constraints
7012 (N : Node_Id) return List_Id; -- List1
7014 function Context_Installed
7015 (N : Node_Id) return Boolean; -- Flag13
7017 function Context_Items
7018 (N : Node_Id) return List_Id; -- List1
7020 function Controlling_Argument
7021 (N : Node_Id) return Node_Id; -- Node1
7023 function Conversion_OK
7024 (N : Node_Id) return Boolean; -- Flag14
7026 function Corresponding_Body
7027 (N : Node_Id) return Node_Id; -- Node5
7029 function Corresponding_Generic_Association
7030 (N : Node_Id) return Node_Id; -- Node5
7032 function Corresponding_Integer_Value
7033 (N : Node_Id) return Uint; -- Uint4
7035 function Corresponding_Spec
7036 (N : Node_Id) return Node_Id; -- Node5
7038 function Corresponding_Stub
7039 (N : Node_Id) return Node_Id; -- Node3
7041 function Dcheck_Function
7042 (N : Node_Id) return Entity_Id; -- Node5
7044 function Debug_Statement
7045 (N : Node_Id) return Node_Id; -- Node3
7047 function Declarations
7048 (N : Node_Id) return List_Id; -- List2
7050 function Default_Expression
7051 (N : Node_Id) return Node_Id; -- Node5
7053 function Default_Name
7054 (N : Node_Id) return Node_Id; -- Node2
7056 function Defining_Identifier
7057 (N : Node_Id) return Entity_Id; -- Node1
7059 function Defining_Unit_Name
7060 (N : Node_Id) return Node_Id; -- Node1
7062 function Delay_Alternative
7063 (N : Node_Id) return Node_Id; -- Node4
7065 function Delay_Finalize_Attach
7066 (N : Node_Id) return Boolean; -- Flag14
7068 function Delay_Statement
7069 (N : Node_Id) return Node_Id; -- Node2
7071 function Delta_Expression
7072 (N : Node_Id) return Node_Id; -- Node3
7074 function Digits_Expression
7075 (N : Node_Id) return Node_Id; -- Node2
7077 function Discr_Check_Funcs_Built
7078 (N : Node_Id) return Boolean; -- Flag11
7080 function Discrete_Choices
7081 (N : Node_Id) return List_Id; -- List4
7083 function Discrete_Range
7084 (N : Node_Id) return Node_Id; -- Node4
7086 function Discrete_Subtype_Definition
7087 (N : Node_Id) return Node_Id; -- Node4
7089 function Discrete_Subtype_Definitions
7090 (N : Node_Id) return List_Id; -- List2
7092 function Discriminant_Specifications
7093 (N : Node_Id) return List_Id; -- List4
7095 function Discriminant_Type
7096 (N : Node_Id) return Node_Id; -- Node5
7098 function Do_Accessibility_Check
7099 (N : Node_Id) return Boolean; -- Flag13
7101 function Do_Discriminant_Check
7102 (N : Node_Id) return Boolean; -- Flag13
7104 function Do_Division_Check
7105 (N : Node_Id) return Boolean; -- Flag13
7107 function Do_Length_Check
7108 (N : Node_Id) return Boolean; -- Flag4
7110 function Do_Overflow_Check
7111 (N : Node_Id) return Boolean; -- Flag17
7113 function Do_Range_Check
7114 (N : Node_Id) return Boolean; -- Flag9
7116 function Do_Storage_Check
7117 (N : Node_Id) return Boolean; -- Flag17
7119 function Do_Tag_Check
7120 (N : Node_Id) return Boolean; -- Flag13
7122 function Elaborate_All_Present
7123 (N : Node_Id) return Boolean; -- Flag15
7125 function Elaborate_Present
7126 (N : Node_Id) return Boolean; -- Flag4
7128 function Elaboration_Boolean
7129 (N : Node_Id) return Node_Id; -- Node2
7131 function Else_Actions
7132 (N : Node_Id) return List_Id; -- List3
7134 function Else_Statements
7135 (N : Node_Id) return List_Id; -- List4
7137 function Elsif_Parts
7138 (N : Node_Id) return List_Id; -- List3
7140 function Enclosing_Variant
7141 (N : Node_Id) return Node_Id; -- Node2
7144 (N : Node_Id) return Node_Id; -- Node4
7147 (N : Node_Id) return Uint; -- Uint5
7150 (N : Node_Id) return Node_Id; -- Node4
7152 function Entity_Or_Associated_Node
7153 (N : Node_Id) return Node_Id; -- Node4
7155 function Entry_Body_Formal_Part
7156 (N : Node_Id) return Node_Id; -- Node5
7158 function Entry_Call_Alternative
7159 (N : Node_Id) return Node_Id; -- Node1
7161 function Entry_Call_Statement
7162 (N : Node_Id) return Node_Id; -- Node1
7164 function Entry_Direct_Name
7165 (N : Node_Id) return Node_Id; -- Node1
7167 function Entry_Index
7168 (N : Node_Id) return Node_Id; -- Node5
7170 function Entry_Index_Specification
7171 (N : Node_Id) return Node_Id; -- Node4
7174 (N : Node_Id) return Node_Id; -- Node5
7176 function Exception_Choices
7177 (N : Node_Id) return List_Id; -- List4
7179 function Exception_Handlers
7180 (N : Node_Id) return List_Id; -- List5
7182 function Exception_Junk
7183 (N : Node_Id) return Boolean; -- Flag11
7185 function Explicit_Actual_Parameter
7186 (N : Node_Id) return Node_Id; -- Node3
7188 function Expansion_Delayed
7189 (N : Node_Id) return Boolean; -- Flag11
7191 function Explicit_Generic_Actual_Parameter
7192 (N : Node_Id) return Node_Id; -- Node1
7195 (N : Node_Id) return Node_Id; -- Node3
7197 function Expressions
7198 (N : Node_Id) return List_Id; -- List1
7201 (N : Node_Id) return Node_Id; -- Node3
7203 function First_Inlined_Subprogram
7204 (N : Node_Id) return Entity_Id; -- Node3
7207 (N : Node_Id) return Boolean; -- Flag5
7209 function First_Named_Actual
7210 (N : Node_Id) return Node_Id; -- Node4
7212 function First_Real_Statement
7213 (N : Node_Id) return Node_Id; -- Node2
7215 function First_Subtype_Link
7216 (N : Node_Id) return Entity_Id; -- Node5
7218 function Float_Truncate
7219 (N : Node_Id) return Boolean; -- Flag11
7221 function Formal_Type_Definition
7222 (N : Node_Id) return Node_Id; -- Node3
7224 function Forwards_OK
7225 (N : Node_Id) return Boolean; -- Flag5
7227 function From_At_Mod
7228 (N : Node_Id) return Boolean; -- Flag4
7230 function Generic_Associations
7231 (N : Node_Id) return List_Id; -- List3
7233 function Generic_Formal_Declarations
7234 (N : Node_Id) return List_Id; -- List2
7236 function Generic_Parent
7237 (N : Node_Id) return Node_Id; -- Node5
7239 function Generic_Parent_Type
7240 (N : Node_Id) return Node_Id; -- Node4
7242 function Handled_Statement_Sequence
7243 (N : Node_Id) return Node_Id; -- Node4
7245 function Handler_List_Entry
7246 (N : Node_Id) return Node_Id; -- Node2
7248 function Has_Created_Identifier
7249 (N : Node_Id) return Boolean; -- Flag15
7251 function Has_Dynamic_Length_Check
7252 (N : Node_Id) return Boolean; -- Flag10
7254 function Has_Dynamic_Range_Check
7255 (N : Node_Id) return Boolean; -- Flag12
7257 function Has_No_Elaboration_Code
7258 (N : Node_Id) return Boolean; -- Flag17
7260 function Has_Priority_Pragma
7261 (N : Node_Id) return Boolean; -- Flag6
7263 function Has_Private_View
7264 (N : Node_Id) return Boolean; -- Flag11
7266 function Has_Storage_Size_Pragma
7267 (N : Node_Id) return Boolean; -- Flag5
7269 function Has_Task_Info_Pragma
7270 (N : Node_Id) return Boolean; -- Flag7
7272 function Has_Task_Name_Pragma
7273 (N : Node_Id) return Boolean; -- Flag8
7275 function Has_Wide_Character
7276 (N : Node_Id) return Boolean; -- Flag11
7278 function Hidden_By_Use_Clause
7279 (N : Node_Id) return Elist_Id; -- Elist4
7282 (N : Node_Id) return Node_Id; -- Node2
7285 (N : Node_Id) return Node_Id; -- Node1
7287 function Implicit_With
7288 (N : Node_Id) return Boolean; -- Flag16
7291 (N : Node_Id) return Boolean; -- Flag15
7293 function Includes_Infinities
7294 (N : Node_Id) return Boolean; -- Flag11
7296 function Instance_Spec
7297 (N : Node_Id) return Node_Id; -- Node5
7300 (N : Node_Id) return Uint; -- Uint3
7302 function Is_Asynchronous_Call_Block
7303 (N : Node_Id) return Boolean; -- Flag7
7305 function Is_Component_Left_Opnd
7306 (N : Node_Id) return Boolean; -- Flag13
7308 function Is_Component_Right_Opnd
7309 (N : Node_Id) return Boolean; -- Flag14
7311 function Is_Controlling_Actual
7312 (N : Node_Id) return Boolean; -- Flag16
7314 function Is_In_Discriminant_Check
7315 (N : Node_Id) return Boolean; -- Flag11
7317 function Is_Machine_Number
7318 (N : Node_Id) return Boolean; -- Flag11
7320 function Is_Null_Loop
7321 (N : Node_Id) return Boolean; -- Flag16
7323 function Is_Overloaded
7324 (N : Node_Id) return Boolean; -- Flag5
7326 function Is_Power_Of_2_For_Shift
7327 (N : Node_Id) return Boolean; -- Flag13
7329 function Is_Protected_Subprogram_Body
7330 (N : Node_Id) return Boolean; -- Flag7
7332 function Is_Static_Expression
7333 (N : Node_Id) return Boolean; -- Flag6
7335 function Is_Subprogram_Descriptor
7336 (N : Node_Id) return Boolean; -- Flag16
7338 function Is_Task_Allocation_Block
7339 (N : Node_Id) return Boolean; -- Flag6
7341 function Is_Task_Master
7342 (N : Node_Id) return Boolean; -- Flag5
7344 function Iteration_Scheme
7345 (N : Node_Id) return Node_Id; -- Node2
7348 (N : Node_Id) return Entity_Id; -- Node1
7350 function Kill_Range_Check
7351 (N : Node_Id) return Boolean; -- Flag11
7353 function Label_Construct
7354 (N : Node_Id) return Node_Id; -- Node2
7357 (N : Node_Id) return Node_Id; -- Node2
7360 (N : Node_Id) return Node_Id; -- Node4
7363 (N : Node_Id) return Boolean; -- Flag6
7365 function Library_Unit
7366 (N : Node_Id) return Node_Id; -- Node4
7368 function Limited_View_Installed
7369 (N : Node_Id) return Boolean; -- Flag18
7371 function Limited_Present
7372 (N : Node_Id) return Boolean; -- Flag17
7375 (N : Node_Id) return List_Id; -- List1
7377 function Loop_Actions
7378 (N : Node_Id) return List_Id; -- List2
7380 function Loop_Parameter_Specification
7381 (N : Node_Id) return Node_Id; -- Node4
7384 (N : Node_Id) return Node_Id; -- Node1
7387 (N : Node_Id) return Node_Id; -- Node2
7390 (N : Node_Id) return Boolean; -- Flag5
7392 function Must_Be_Byte_Aligned
7393 (N : Node_Id) return Boolean; -- Flag14
7395 function Must_Not_Freeze
7396 (N : Node_Id) return Boolean; -- Flag8
7399 (N : Node_Id) return Node_Id; -- Node2
7402 (N : Node_Id) return List_Id; -- List2
7404 function Next_Entity
7405 (N : Node_Id) return Node_Id; -- Node2
7407 function Next_Named_Actual
7408 (N : Node_Id) return Node_Id; -- Node4
7410 function Next_Rep_Item
7411 (N : Node_Id) return Node_Id; -- Node4
7413 function Next_Use_Clause
7414 (N : Node_Id) return Node_Id; -- Node3
7416 function No_Ctrl_Actions
7417 (N : Node_Id) return Boolean; -- Flag7
7419 function No_Elaboration_Check
7420 (N : Node_Id) return Boolean; -- Flag14
7422 function No_Entities_Ref_In_Spec
7423 (N : Node_Id) return Boolean; -- Flag8
7425 function No_Initialization
7426 (N : Node_Id) return Boolean; -- Flag13
7428 function No_Truncation
7429 (N : Node_Id) return Boolean; -- Flag17
7431 function Null_Present
7432 (N : Node_Id) return Boolean; -- Flag13
7434 function Null_Record_Present
7435 (N : Node_Id) return Boolean; -- Flag17
7437 function Object_Definition
7438 (N : Node_Id) return Node_Id; -- Node4
7440 function OK_For_Stream
7441 (N : Node_Id) return Boolean; -- Flag4
7443 function Original_Discriminant
7444 (N : Node_Id) return Node_Id; -- Node2
7446 function Original_Entity
7447 (N : Node_Id) return Entity_Id; -- Node2
7449 function Others_Discrete_Choices
7450 (N : Node_Id) return List_Id; -- List1
7452 function Out_Present
7453 (N : Node_Id) return Boolean; -- Flag17
7455 function Parameter_Associations
7456 (N : Node_Id) return List_Id; -- List3
7458 function Parameter_List_Truncated
7459 (N : Node_Id) return Boolean; -- Flag17
7461 function Parameter_Specifications
7462 (N : Node_Id) return List_Id; -- List3
7464 function Parameter_Type
7465 (N : Node_Id) return Node_Id; -- Node2
7467 function Parent_Spec
7468 (N : Node_Id) return Node_Id; -- Node4
7471 (N : Node_Id) return Node_Id; -- Node2
7473 function Pragma_Argument_Associations
7474 (N : Node_Id) return List_Id; -- List2
7476 function Pragmas_After
7477 (N : Node_Id) return List_Id; -- List5
7479 function Pragmas_Before
7480 (N : Node_Id) return List_Id; -- List4
7483 (N : Node_Id) return Node_Id; -- Node3
7485 function Present_Expr
7486 (N : Node_Id) return Uint; -- Uint3
7489 (N : Node_Id) return Boolean; -- Flag6
7491 function Print_In_Hex
7492 (N : Node_Id) return Boolean; -- Flag13
7494 function Private_Declarations
7495 (N : Node_Id) return List_Id; -- List3
7497 function Private_Present
7498 (N : Node_Id) return Boolean; -- Flag15
7500 function Procedure_To_Call
7501 (N : Node_Id) return Node_Id; -- Node4
7503 function Proper_Body
7504 (N : Node_Id) return Node_Id; -- Node1
7506 function Protected_Definition
7507 (N : Node_Id) return Node_Id; -- Node3
7509 function Protected_Present
7510 (N : Node_Id) return Boolean; -- Flag15
7512 function Raises_Constraint_Error
7513 (N : Node_Id) return Boolean; -- Flag7
7515 function Range_Constraint
7516 (N : Node_Id) return Node_Id; -- Node4
7518 function Range_Expression
7519 (N : Node_Id) return Node_Id; -- Node4
7521 function Real_Range_Specification
7522 (N : Node_Id) return Node_Id; -- Node4
7525 (N : Node_Id) return Ureal; -- Ureal3
7528 (N : Node_Id) return Uint; -- Uint3
7530 function Record_Extension_Part
7531 (N : Node_Id) return Node_Id; -- Node3
7533 function Redundant_Use
7534 (N : Node_Id) return Boolean; -- Flag13
7536 function Return_Type
7537 (N : Node_Id) return Node_Id; -- Node2
7539 function Reverse_Present
7540 (N : Node_Id) return Boolean; -- Flag15
7543 (N : Node_Id) return Node_Id; -- Node3
7545 function Rounded_Result
7546 (N : Node_Id) return Boolean; -- Flag18
7549 (N : Node_Id) return Node_Id; -- Node3
7551 function Select_Alternatives
7552 (N : Node_Id) return List_Id; -- List1
7554 function Selector_Name
7555 (N : Node_Id) return Node_Id; -- Node2
7557 function Selector_Names
7558 (N : Node_Id) return List_Id; -- List1
7560 function Shift_Count_OK
7561 (N : Node_Id) return Boolean; -- Flag4
7563 function Source_Type
7564 (N : Node_Id) return Entity_Id; -- Node1
7566 function Specification
7567 (N : Node_Id) return Node_Id; -- Node1
7570 (N : Node_Id) return List_Id; -- List3
7572 function Static_Processing_OK
7573 (N : Node_Id) return Boolean; -- Flag4
7575 function Storage_Pool
7576 (N : Node_Id) return Node_Id; -- Node1
7579 (N : Node_Id) return String_Id; -- Str3
7581 function Subtype_Indication
7582 (N : Node_Id) return Node_Id; -- Node5
7584 function Subtype_Mark
7585 (N : Node_Id) return Node_Id; -- Node4
7587 function Subtype_Marks
7588 (N : Node_Id) return List_Id; -- List2
7590 function Tagged_Present
7591 (N : Node_Id) return Boolean; -- Flag15
7593 function Target_Type
7594 (N : Node_Id) return Entity_Id; -- Node2
7596 function Task_Body_Procedure
7597 (N : Node_Id) return Entity_Id; -- Node2
7599 function Task_Definition
7600 (N : Node_Id) return Node_Id; -- Node3
7602 function Then_Actions
7603 (N : Node_Id) return List_Id; -- List2
7605 function Then_Statements
7606 (N : Node_Id) return List_Id; -- List2
7608 function Treat_Fixed_As_Integer
7609 (N : Node_Id) return Boolean; -- Flag14
7611 function Triggering_Alternative
7612 (N : Node_Id) return Node_Id; -- Node1
7614 function Triggering_Statement
7615 (N : Node_Id) return Node_Id; -- Node1
7618 (N : Node_Id) return Elist_Id; -- Elist3
7620 function Type_Definition
7621 (N : Node_Id) return Node_Id; -- Node3
7624 (N : Node_Id) return Node_Id; -- Node2
7626 function Unknown_Discriminants_Present
7627 (N : Node_Id) return Boolean; -- Flag13
7629 function Unreferenced_In_Spec
7630 (N : Node_Id) return Boolean; -- Flag7
7632 function Variant_Part
7633 (N : Node_Id) return Node_Id; -- Node4
7636 (N : Node_Id) return List_Id; -- List1
7638 function Visible_Declarations
7639 (N : Node_Id) return List_Id; -- List2
7641 function Was_Originally_Stub
7642 (N : Node_Id) return Boolean; -- Flag13
7644 function Zero_Cost_Handling
7645 (N : Node_Id) return Boolean; -- Flag5
7647 -- End functions (note used by xsinfo utility program to end processing)
7649 ----------------------------
7650 -- Node Update Procedures --
7651 ----------------------------
7653 -- These are the corresponding node update routines, which again provide
7654 -- a high level logical access with type checking. In addition to setting
7655 -- the indicated field of the node N to the given Val, in the case of
7656 -- tree pointers (List1-4), the parent pointer of the Val node is set to
7657 -- point back to node N. This automates the setting of the parent pointer.
7659 procedure Set_ABE_Is_Certain
7660 (N : Node_Id; Val : Boolean := True); -- Flag18
7662 procedure Set_Abort_Present
7663 (N : Node_Id; Val : Boolean := True); -- Flag15
7665 procedure Set_Abortable_Part
7666 (N : Node_Id; Val : Node_Id); -- Node2
7668 procedure Set_Abstract_Present
7669 (N : Node_Id; Val : Boolean := True); -- Flag4
7671 procedure Set_Accept_Handler_Records
7672 (N : Node_Id; Val : List_Id); -- List5
7674 procedure Set_Accept_Statement
7675 (N : Node_Id; Val : Node_Id); -- Node2
7677 procedure Set_Access_Definition
7678 (N : Node_Id; Val : Node_Id); -- Node3
7680 procedure Set_Access_Types_To_Process
7681 (N : Node_Id; Val : Elist_Id); -- Elist2
7683 procedure Set_Actions
7684 (N : Node_Id; Val : List_Id); -- List1
7686 procedure Set_Activation_Chain_Entity
7687 (N : Node_Id; Val : Node_Id); -- Node3
7689 procedure Set_Acts_As_Spec
7690 (N : Node_Id; Val : Boolean := True); -- Flag4
7692 procedure Set_Aggregate_Bounds
7693 (N : Node_Id; Val : Node_Id); -- Node3
7695 procedure Set_Aliased_Present
7696 (N : Node_Id; Val : Boolean := True); -- Flag4
7698 procedure Set_All_Others
7699 (N : Node_Id; Val : Boolean := True); -- Flag11
7701 procedure Set_All_Present
7702 (N : Node_Id; Val : Boolean := True); -- Flag15
7704 procedure Set_Alternatives
7705 (N : Node_Id; Val : List_Id); -- List4
7707 procedure Set_Ancestor_Part
7708 (N : Node_Id; Val : Node_Id); -- Node3
7710 procedure Set_Array_Aggregate
7711 (N : Node_Id; Val : Node_Id); -- Node3
7713 procedure Set_Assignment_OK
7714 (N : Node_Id; Val : Boolean := True); -- Flag15
7716 procedure Set_Associated_Node
7717 (N : Node_Id; Val : Node_Id); -- Node4
7719 procedure Set_Attribute_Name
7720 (N : Node_Id; Val : Name_Id); -- Name2
7722 procedure Set_At_End_Proc
7723 (N : Node_Id; Val : Node_Id); -- Node1
7725 procedure Set_Aux_Decls_Node
7726 (N : Node_Id; Val : Node_Id); -- Node5
7728 procedure Set_Backwards_OK
7729 (N : Node_Id; Val : Boolean := True); -- Flag6
7731 procedure Set_Bad_Is_Detected
7732 (N : Node_Id; Val : Boolean := True); -- Flag15
7734 procedure Set_Body_Required
7735 (N : Node_Id; Val : Boolean := True); -- Flag13
7737 procedure Set_Body_To_Inline
7738 (N : Node_Id; Val : Node_Id); -- Node3
7740 procedure Set_Box_Present
7741 (N : Node_Id; Val : Boolean := True); -- Flag15
7743 procedure Set_By_Ref
7744 (N : Node_Id; Val : Boolean := True); -- Flag5
7746 procedure Set_Char_Literal_Value
7747 (N : Node_Id; Val : Char_Code); -- Char_Code2
7750 (N : Node_Id; Val : Name_Id); -- Name1
7752 procedure Set_Check_Address_Alignment
7753 (N : Node_Id; Val : Boolean := True); -- Flag11
7755 procedure Set_Choice_Parameter
7756 (N : Node_Id; Val : Node_Id); -- Node2
7758 procedure Set_Choices
7759 (N : Node_Id; Val : List_Id); -- List1
7761 procedure Set_Compile_Time_Known_Aggregate
7762 (N : Node_Id; Val : Boolean := True); -- Flag18
7764 procedure Set_Component_Associations
7765 (N : Node_Id; Val : List_Id); -- List2
7767 procedure Set_Component_Clauses
7768 (N : Node_Id; Val : List_Id); -- List3
7770 procedure Set_Component_Definition
7771 (N : Node_Id; Val : Node_Id); -- Node4
7773 procedure Set_Component_Items
7774 (N : Node_Id; Val : List_Id); -- List3
7776 procedure Set_Component_List
7777 (N : Node_Id; Val : Node_Id); -- Node1
7779 procedure Set_Component_Name
7780 (N : Node_Id; Val : Node_Id); -- Node1
7782 procedure Set_Condition
7783 (N : Node_Id; Val : Node_Id); -- Node1
7785 procedure Set_Condition_Actions
7786 (N : Node_Id; Val : List_Id); -- List3
7788 procedure Set_Config_Pragmas
7789 (N : Node_Id; Val : List_Id); -- List4
7791 procedure Set_Constant_Present
7792 (N : Node_Id; Val : Boolean := True); -- Flag17
7794 procedure Set_Constraint
7795 (N : Node_Id; Val : Node_Id); -- Node3
7797 procedure Set_Constraints
7798 (N : Node_Id; Val : List_Id); -- List1
7800 procedure Set_Context_Installed
7801 (N : Node_Id; Val : Boolean := True); -- Flag13
7803 procedure Set_Context_Items
7804 (N : Node_Id; Val : List_Id); -- List1
7806 procedure Set_Controlling_Argument
7807 (N : Node_Id; Val : Node_Id); -- Node1
7809 procedure Set_Conversion_OK
7810 (N : Node_Id; Val : Boolean := True); -- Flag14
7812 procedure Set_Corresponding_Body
7813 (N : Node_Id; Val : Node_Id); -- Node5
7815 procedure Set_Corresponding_Generic_Association
7816 (N : Node_Id; Val : Node_Id); -- Node5
7818 procedure Set_Corresponding_Integer_Value
7819 (N : Node_Id; Val : Uint); -- Uint4
7821 procedure Set_Corresponding_Spec
7822 (N : Node_Id; Val : Node_Id); -- Node5
7824 procedure Set_Corresponding_Stub
7825 (N : Node_Id; Val : Node_Id); -- Node3
7827 procedure Set_Dcheck_Function
7828 (N : Node_Id; Val : Entity_Id); -- Node5
7830 procedure Set_Debug_Statement
7831 (N : Node_Id; Val : Node_Id); -- Node3
7833 procedure Set_Declarations
7834 (N : Node_Id; Val : List_Id); -- List2
7836 procedure Set_Default_Expression
7837 (N : Node_Id; Val : Node_Id); -- Node5
7839 procedure Set_Default_Name
7840 (N : Node_Id; Val : Node_Id); -- Node2
7842 procedure Set_Defining_Identifier
7843 (N : Node_Id; Val : Entity_Id); -- Node1
7845 procedure Set_Defining_Unit_Name
7846 (N : Node_Id; Val : Node_Id); -- Node1
7848 procedure Set_Delay_Alternative
7849 (N : Node_Id; Val : Node_Id); -- Node4
7851 procedure Set_Delay_Finalize_Attach
7852 (N : Node_Id; Val : Boolean := True); -- Flag14
7854 procedure Set_Delay_Statement
7855 (N : Node_Id; Val : Node_Id); -- Node2
7857 procedure Set_Delta_Expression
7858 (N : Node_Id; Val : Node_Id); -- Node3
7860 procedure Set_Digits_Expression
7861 (N : Node_Id; Val : Node_Id); -- Node2
7863 procedure Set_Discr_Check_Funcs_Built
7864 (N : Node_Id; Val : Boolean := True); -- Flag11
7866 procedure Set_Discrete_Choices
7867 (N : Node_Id; Val : List_Id); -- List4
7869 procedure Set_Discrete_Range
7870 (N : Node_Id; Val : Node_Id); -- Node4
7872 procedure Set_Discrete_Subtype_Definition
7873 (N : Node_Id; Val : Node_Id); -- Node4
7875 procedure Set_Discrete_Subtype_Definitions
7876 (N : Node_Id; Val : List_Id); -- List2
7878 procedure Set_Discriminant_Specifications
7879 (N : Node_Id; Val : List_Id); -- List4
7881 procedure Set_Discriminant_Type
7882 (N : Node_Id; Val : Node_Id); -- Node5
7884 procedure Set_Do_Accessibility_Check
7885 (N : Node_Id; Val : Boolean := True); -- Flag13
7887 procedure Set_Do_Discriminant_Check
7888 (N : Node_Id; Val : Boolean := True); -- Flag13
7890 procedure Set_Do_Division_Check
7891 (N : Node_Id; Val : Boolean := True); -- Flag13
7893 procedure Set_Do_Length_Check
7894 (N : Node_Id; Val : Boolean := True); -- Flag4
7896 procedure Set_Do_Overflow_Check
7897 (N : Node_Id; Val : Boolean := True); -- Flag17
7899 procedure Set_Do_Range_Check
7900 (N : Node_Id; Val : Boolean := True); -- Flag9
7902 procedure Set_Do_Storage_Check
7903 (N : Node_Id; Val : Boolean := True); -- Flag17
7905 procedure Set_Do_Tag_Check
7906 (N : Node_Id; Val : Boolean := True); -- Flag13
7908 procedure Set_Elaborate_All_Present
7909 (N : Node_Id; Val : Boolean := True); -- Flag15
7911 procedure Set_Elaborate_Present
7912 (N : Node_Id; Val : Boolean := True); -- Flag4
7914 procedure Set_Elaboration_Boolean
7915 (N : Node_Id; Val : Node_Id); -- Node2
7917 procedure Set_Else_Actions
7918 (N : Node_Id; Val : List_Id); -- List3
7920 procedure Set_Else_Statements
7921 (N : Node_Id; Val : List_Id); -- List4
7923 procedure Set_Elsif_Parts
7924 (N : Node_Id; Val : List_Id); -- List3
7926 procedure Set_Enclosing_Variant
7927 (N : Node_Id; Val : Node_Id); -- Node2
7929 procedure Set_End_Label
7930 (N : Node_Id; Val : Node_Id); -- Node4
7932 procedure Set_End_Span
7933 (N : Node_Id; Val : Uint); -- Uint5
7935 procedure Set_Entity
7936 (N : Node_Id; Val : Node_Id); -- Node4
7938 procedure Set_Entry_Body_Formal_Part
7939 (N : Node_Id; Val : Node_Id); -- Node5
7941 procedure Set_Entry_Call_Alternative
7942 (N : Node_Id; Val : Node_Id); -- Node1
7944 procedure Set_Entry_Call_Statement
7945 (N : Node_Id; Val : Node_Id); -- Node1
7947 procedure Set_Entry_Direct_Name
7948 (N : Node_Id; Val : Node_Id); -- Node1
7950 procedure Set_Entry_Index
7951 (N : Node_Id; Val : Node_Id); -- Node5
7953 procedure Set_Entry_Index_Specification
7954 (N : Node_Id; Val : Node_Id); -- Node4
7957 (N : Node_Id; Val : Node_Id); -- Node5
7959 procedure Set_Exception_Choices
7960 (N : Node_Id; Val : List_Id); -- List4
7962 procedure Set_Exception_Handlers
7963 (N : Node_Id; Val : List_Id); -- List5
7965 procedure Set_Exception_Junk
7966 (N : Node_Id; Val : Boolean := True); -- Flag11
7968 procedure Set_Expansion_Delayed
7969 (N : Node_Id; Val : Boolean := True); -- Flag11
7971 procedure Set_Explicit_Actual_Parameter
7972 (N : Node_Id; Val : Node_Id); -- Node3
7974 procedure Set_Explicit_Generic_Actual_Parameter
7975 (N : Node_Id; Val : Node_Id); -- Node1
7977 procedure Set_Expression
7978 (N : Node_Id; Val : Node_Id); -- Node3
7980 procedure Set_Expressions
7981 (N : Node_Id; Val : List_Id); -- List1
7983 procedure Set_First_Bit
7984 (N : Node_Id; Val : Node_Id); -- Node3
7986 procedure Set_First_Inlined_Subprogram
7987 (N : Node_Id; Val : Entity_Id); -- Node3
7989 procedure Set_First_Name
7990 (N : Node_Id; Val : Boolean := True); -- Flag5
7992 procedure Set_First_Named_Actual
7993 (N : Node_Id; Val : Node_Id); -- Node4
7995 procedure Set_First_Real_Statement
7996 (N : Node_Id; Val : Node_Id); -- Node2
7998 procedure Set_First_Subtype_Link
7999 (N : Node_Id; Val : Entity_Id); -- Node5
8001 procedure Set_Float_Truncate
8002 (N : Node_Id; Val : Boolean := True); -- Flag11
8004 procedure Set_Formal_Type_Definition
8005 (N : Node_Id; Val : Node_Id); -- Node3
8007 procedure Set_Forwards_OK
8008 (N : Node_Id; Val : Boolean := True); -- Flag5
8010 procedure Set_From_At_Mod
8011 (N : Node_Id; Val : Boolean := True); -- Flag4
8013 procedure Set_Generic_Associations
8014 (N : Node_Id; Val : List_Id); -- List3
8016 procedure Set_Generic_Formal_Declarations
8017 (N : Node_Id; Val : List_Id); -- List2
8019 procedure Set_Generic_Parent
8020 (N : Node_Id; Val : Node_Id); -- Node5
8022 procedure Set_Generic_Parent_Type
8023 (N : Node_Id; Val : Node_Id); -- Node4
8025 procedure Set_Handled_Statement_Sequence
8026 (N : Node_Id; Val : Node_Id); -- Node4
8028 procedure Set_Handler_List_Entry
8029 (N : Node_Id; Val : Node_Id); -- Node2
8031 procedure Set_Has_Created_Identifier
8032 (N : Node_Id; Val : Boolean := True); -- Flag15
8034 procedure Set_Has_Dynamic_Length_Check
8035 (N : Node_Id; Val : Boolean := True); -- Flag10
8037 procedure Set_Has_Dynamic_Range_Check
8038 (N : Node_Id; Val : Boolean := True); -- Flag12
8040 procedure Set_Has_No_Elaboration_Code
8041 (N : Node_Id; Val : Boolean := True); -- Flag17
8043 procedure Set_Has_Priority_Pragma
8044 (N : Node_Id; Val : Boolean := True); -- Flag6
8046 procedure Set_Has_Private_View
8047 (N : Node_Id; Val : Boolean := True); -- Flag11
8049 procedure Set_Has_Storage_Size_Pragma
8050 (N : Node_Id; Val : Boolean := True); -- Flag5
8052 procedure Set_Has_Task_Info_Pragma
8053 (N : Node_Id; Val : Boolean := True); -- Flag7
8055 procedure Set_Has_Task_Name_Pragma
8056 (N : Node_Id; Val : Boolean := True); -- Flag8
8058 procedure Set_Has_Wide_Character
8059 (N : Node_Id; Val : Boolean := True); -- Flag11
8061 procedure Set_Hidden_By_Use_Clause
8062 (N : Node_Id; Val : Elist_Id); -- Elist4
8064 procedure Set_High_Bound
8065 (N : Node_Id; Val : Node_Id); -- Node2
8067 procedure Set_Identifier
8068 (N : Node_Id; Val : Node_Id); -- Node1
8070 procedure Set_Implicit_With
8071 (N : Node_Id; Val : Boolean := True); -- Flag16
8073 procedure Set_In_Present
8074 (N : Node_Id; Val : Boolean := True); -- Flag15
8076 procedure Set_Includes_Infinities
8077 (N : Node_Id; Val : Boolean := True); -- Flag11
8079 procedure Set_Instance_Spec
8080 (N : Node_Id; Val : Node_Id); -- Node5
8082 procedure Set_Intval
8083 (N : Node_Id; Val : Uint); -- Uint3
8085 procedure Set_Is_Asynchronous_Call_Block
8086 (N : Node_Id; Val : Boolean := True); -- Flag7
8088 procedure Set_Is_Component_Left_Opnd
8089 (N : Node_Id; Val : Boolean := True); -- Flag13
8091 procedure Set_Is_Component_Right_Opnd
8092 (N : Node_Id; Val : Boolean := True); -- Flag14
8094 procedure Set_Is_Controlling_Actual
8095 (N : Node_Id; Val : Boolean := True); -- Flag16
8097 procedure Set_Is_In_Discriminant_Check
8098 (N : Node_Id; Val : Boolean := True); -- Flag11
8100 procedure Set_Is_Machine_Number
8101 (N : Node_Id; Val : Boolean := True); -- Flag11
8103 procedure Set_Is_Null_Loop
8104 (N : Node_Id; Val : Boolean := True); -- Flag16
8106 procedure Set_Is_Overloaded
8107 (N : Node_Id; Val : Boolean := True); -- Flag5
8109 procedure Set_Is_Power_Of_2_For_Shift
8110 (N : Node_Id; Val : Boolean := True); -- Flag13
8112 procedure Set_Is_Protected_Subprogram_Body
8113 (N : Node_Id; Val : Boolean := True); -- Flag7
8115 procedure Set_Is_Static_Expression
8116 (N : Node_Id; Val : Boolean := True); -- Flag6
8118 procedure Set_Is_Subprogram_Descriptor
8119 (N : Node_Id; Val : Boolean := True); -- Flag16
8121 procedure Set_Is_Task_Allocation_Block
8122 (N : Node_Id; Val : Boolean := True); -- Flag6
8124 procedure Set_Is_Task_Master
8125 (N : Node_Id; Val : Boolean := True); -- Flag5
8127 procedure Set_Iteration_Scheme
8128 (N : Node_Id; Val : Node_Id); -- Node2
8131 (N : Node_Id; Val : Entity_Id); -- Node1
8133 procedure Set_Kill_Range_Check
8134 (N : Node_Id; Val : Boolean := True); -- Flag11
8136 procedure Set_Last_Bit
8137 (N : Node_Id; Val : Node_Id); -- Node4
8139 procedure Set_Last_Name
8140 (N : Node_Id; Val : Boolean := True); -- Flag6
8142 procedure Set_Library_Unit
8143 (N : Node_Id; Val : Node_Id); -- Node4
8145 procedure Set_Label_Construct
8146 (N : Node_Id; Val : Node_Id); -- Node2
8148 procedure Set_Left_Opnd
8149 (N : Node_Id; Val : Node_Id); -- Node2
8151 procedure Set_Limited_View_Installed
8152 (N : Node_Id; Val : Boolean := True); -- Flag18
8154 procedure Set_Limited_Present
8155 (N : Node_Id; Val : Boolean := True); -- Flag17
8157 procedure Set_Literals
8158 (N : Node_Id; Val : List_Id); -- List1
8160 procedure Set_Loop_Actions
8161 (N : Node_Id; Val : List_Id); -- List2
8163 procedure Set_Loop_Parameter_Specification
8164 (N : Node_Id; Val : Node_Id); -- Node4
8166 procedure Set_Low_Bound
8167 (N : Node_Id; Val : Node_Id); -- Node1
8169 procedure Set_Mod_Clause
8170 (N : Node_Id; Val : Node_Id); -- Node2
8172 procedure Set_More_Ids
8173 (N : Node_Id; Val : Boolean := True); -- Flag5
8175 procedure Set_Must_Be_Byte_Aligned
8176 (N : Node_Id; Val : Boolean := True); -- Flag14
8178 procedure Set_Must_Not_Freeze
8179 (N : Node_Id; Val : Boolean := True); -- Flag8
8182 (N : Node_Id; Val : Node_Id); -- Node2
8185 (N : Node_Id; Val : List_Id); -- List2
8187 procedure Set_Next_Entity
8188 (N : Node_Id; Val : Node_Id); -- Node2
8190 procedure Set_Next_Named_Actual
8191 (N : Node_Id; Val : Node_Id); -- Node4
8193 procedure Set_Next_Rep_Item
8194 (N : Node_Id; Val : Node_Id); -- Node4
8196 procedure Set_Next_Use_Clause
8197 (N : Node_Id; Val : Node_Id); -- Node3
8199 procedure Set_No_Ctrl_Actions
8200 (N : Node_Id; Val : Boolean := True); -- Flag7
8202 procedure Set_No_Elaboration_Check
8203 (N : Node_Id; Val : Boolean := True); -- Flag14
8205 procedure Set_No_Entities_Ref_In_Spec
8206 (N : Node_Id; Val : Boolean := True); -- Flag8
8208 procedure Set_No_Initialization
8209 (N : Node_Id; Val : Boolean := True); -- Flag13
8211 procedure Set_No_Truncation
8212 (N : Node_Id; Val : Boolean := True); -- Flag17
8214 procedure Set_Null_Present
8215 (N : Node_Id; Val : Boolean := True); -- Flag13
8217 procedure Set_Null_Record_Present
8218 (N : Node_Id; Val : Boolean := True); -- Flag17
8220 procedure Set_Object_Definition
8221 (N : Node_Id; Val : Node_Id); -- Node4
8223 procedure Set_OK_For_Stream
8224 (N : Node_Id; Val : Boolean := True); -- Flag4
8226 procedure Set_Original_Discriminant
8227 (N : Node_Id; Val : Node_Id); -- Node2
8229 procedure Set_Original_Entity
8230 (N : Node_Id; Val : Entity_Id); -- Node2
8232 procedure Set_Others_Discrete_Choices
8233 (N : Node_Id; Val : List_Id); -- List1
8235 procedure Set_Out_Present
8236 (N : Node_Id; Val : Boolean := True); -- Flag17
8238 procedure Set_Parameter_Associations
8239 (N : Node_Id; Val : List_Id); -- List3
8241 procedure Set_Parameter_List_Truncated
8242 (N : Node_Id; Val : Boolean := True); -- Flag17
8244 procedure Set_Parameter_Specifications
8245 (N : Node_Id; Val : List_Id); -- List3
8247 procedure Set_Parameter_Type
8248 (N : Node_Id; Val : Node_Id); -- Node2
8250 procedure Set_Parent_Spec
8251 (N : Node_Id; Val : Node_Id); -- Node4
8253 procedure Set_Position
8254 (N : Node_Id; Val : Node_Id); -- Node2
8256 procedure Set_Pragma_Argument_Associations
8257 (N : Node_Id; Val : List_Id); -- List2
8259 procedure Set_Pragmas_After
8260 (N : Node_Id; Val : List_Id); -- List5
8262 procedure Set_Pragmas_Before
8263 (N : Node_Id; Val : List_Id); -- List4
8265 procedure Set_Prefix
8266 (N : Node_Id; Val : Node_Id); -- Node3
8268 procedure Set_Present_Expr
8269 (N : Node_Id; Val : Uint); -- Uint3
8271 procedure Set_Prev_Ids
8272 (N : Node_Id; Val : Boolean := True); -- Flag6
8274 procedure Set_Print_In_Hex
8275 (N : Node_Id; Val : Boolean := True); -- Flag13
8277 procedure Set_Private_Declarations
8278 (N : Node_Id; Val : List_Id); -- List3
8280 procedure Set_Private_Present
8281 (N : Node_Id; Val : Boolean := True); -- Flag15
8283 procedure Set_Procedure_To_Call
8284 (N : Node_Id; Val : Node_Id); -- Node4
8286 procedure Set_Proper_Body
8287 (N : Node_Id; Val : Node_Id); -- Node1
8289 procedure Set_Protected_Definition
8290 (N : Node_Id; Val : Node_Id); -- Node3
8292 procedure Set_Protected_Present
8293 (N : Node_Id; Val : Boolean := True); -- Flag15
8295 procedure Set_Raises_Constraint_Error
8296 (N : Node_Id; Val : Boolean := True); -- Flag7
8298 procedure Set_Range_Constraint
8299 (N : Node_Id; Val : Node_Id); -- Node4
8301 procedure Set_Range_Expression
8302 (N : Node_Id; Val : Node_Id); -- Node4
8304 procedure Set_Real_Range_Specification
8305 (N : Node_Id; Val : Node_Id); -- Node4
8307 procedure Set_Realval
8308 (N : Node_Id; Val : Ureal); -- Ureal3
8310 procedure Set_Reason
8311 (N : Node_Id; Val : Uint); -- Uint3
8313 procedure Set_Record_Extension_Part
8314 (N : Node_Id; Val : Node_Id); -- Node3
8316 procedure Set_Redundant_Use
8317 (N : Node_Id; Val : Boolean := True); -- Flag13
8319 procedure Set_Return_Type
8320 (N : Node_Id; Val : Node_Id); -- Node2
8322 procedure Set_Reverse_Present
8323 (N : Node_Id; Val : Boolean := True); -- Flag15
8325 procedure Set_Right_Opnd
8326 (N : Node_Id; Val : Node_Id); -- Node3
8328 procedure Set_Rounded_Result
8329 (N : Node_Id; Val : Boolean := True); -- Flag18
8332 (N : Node_Id; Val : Node_Id); -- Node3
8334 procedure Set_Select_Alternatives
8335 (N : Node_Id; Val : List_Id); -- List1
8337 procedure Set_Selector_Name
8338 (N : Node_Id; Val : Node_Id); -- Node2
8340 procedure Set_Selector_Names
8341 (N : Node_Id; Val : List_Id); -- List1
8343 procedure Set_Shift_Count_OK
8344 (N : Node_Id; Val : Boolean := True); -- Flag4
8346 procedure Set_Source_Type
8347 (N : Node_Id; Val : Entity_Id); -- Node1
8349 procedure Set_Specification
8350 (N : Node_Id; Val : Node_Id); -- Node1
8352 procedure Set_Statements
8353 (N : Node_Id; Val : List_Id); -- List3
8355 procedure Set_Static_Processing_OK
8356 (N : Node_Id; Val : Boolean); -- Flag4
8358 procedure Set_Storage_Pool
8359 (N : Node_Id; Val : Node_Id); -- Node1
8361 procedure Set_Strval
8362 (N : Node_Id; Val : String_Id); -- Str3
8364 procedure Set_Subtype_Indication
8365 (N : Node_Id; Val : Node_Id); -- Node5
8367 procedure Set_Subtype_Mark
8368 (N : Node_Id; Val : Node_Id); -- Node4
8370 procedure Set_Subtype_Marks
8371 (N : Node_Id; Val : List_Id); -- List2
8373 procedure Set_Tagged_Present
8374 (N : Node_Id; Val : Boolean := True); -- Flag15
8376 procedure Set_Target_Type
8377 (N : Node_Id; Val : Entity_Id); -- Node2
8379 procedure Set_Task_Body_Procedure
8380 (N : Node_Id; Val : Entity_Id); -- Node2
8382 procedure Set_Task_Definition
8383 (N : Node_Id; Val : Node_Id); -- Node3
8385 procedure Set_Then_Actions
8386 (N : Node_Id; Val : List_Id); -- List2
8388 procedure Set_Then_Statements
8389 (N : Node_Id; Val : List_Id); -- List2
8391 procedure Set_Treat_Fixed_As_Integer
8392 (N : Node_Id; Val : Boolean := True); -- Flag14
8394 procedure Set_Triggering_Alternative
8395 (N : Node_Id; Val : Node_Id); -- Node1
8397 procedure Set_Triggering_Statement
8398 (N : Node_Id; Val : Node_Id); -- Node1
8400 procedure Set_TSS_Elist
8401 (N : Node_Id; Val : Elist_Id); -- Elist3
8403 procedure Set_Type_Definition
8404 (N : Node_Id; Val : Node_Id); -- Node3
8407 (N : Node_Id; Val : Node_Id); -- Node2
8409 procedure Set_Unknown_Discriminants_Present
8410 (N : Node_Id; Val : Boolean := True); -- Flag13
8412 procedure Set_Unreferenced_In_Spec
8413 (N : Node_Id; Val : Boolean := True); -- Flag7
8415 procedure Set_Variant_Part
8416 (N : Node_Id; Val : Node_Id); -- Node4
8418 procedure Set_Variants
8419 (N : Node_Id; Val : List_Id); -- List1
8421 procedure Set_Visible_Declarations
8422 (N : Node_Id; Val : List_Id); -- List2
8424 procedure Set_Was_Originally_Stub
8425 (N : Node_Id; Val : Boolean := True); -- Flag13
8427 procedure Set_Zero_Cost_Handling
8428 (N : Node_Id; Val : Boolean := True); -- Flag5
8430 -------------------------
8431 -- Iterator Procedures --
8432 -------------------------
8434 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
8436 procedure Next_Entity (N : in out Node_Id);
8437 procedure Next_Named_Actual (N : in out Node_Id);
8438 procedure Next_Rep_Item (N : in out Node_Id);
8439 procedure Next_Use_Clause (N : in out Node_Id);
8441 --------------------------------------
8442 -- Logical Access to End_Span Field --
8443 --------------------------------------
8445 function End_Location (N : Node_Id) return Source_Ptr;
8446 -- N is an N_If_Statement or N_Case_Statement node, and this
8447 -- function returns the location of the IF token in the END IF
8448 -- sequence by translating the value of the End_Span field.
8450 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
8451 -- N is an N_If_Statement or N_Case_Statement node. This procedure
8452 -- sets the End_Span field to correspond to the given value S. In
8453 -- other words, End_Span is set to the difference between S and
8454 -- Sloc (N), the starting location.
8456 --------------------
8457 -- Inline Pragmas --
8458 --------------------
8460 pragma Inline (ABE_Is_Certain);
8461 pragma Inline (Abort_Present);
8462 pragma Inline (Abortable_Part);
8463 pragma Inline (Abstract_Present);
8464 pragma Inline (Accept_Handler_Records);
8465 pragma Inline (Accept_Statement);
8466 pragma Inline (Access_Definition);
8467 pragma Inline (Access_Types_To_Process);
8468 pragma Inline (Actions);
8469 pragma Inline (Activation_Chain_Entity);
8470 pragma Inline (Acts_As_Spec);
8471 pragma Inline (Aggregate_Bounds);
8472 pragma Inline (Aliased_Present);
8473 pragma Inline (All_Others);
8474 pragma Inline (All_Present);
8475 pragma Inline (Alternatives);
8476 pragma Inline (Ancestor_Part);
8477 pragma Inline (Array_Aggregate);
8478 pragma Inline (Assignment_OK);
8479 pragma Inline (Associated_Node);
8480 pragma Inline (At_End_Proc);
8481 pragma Inline (Attribute_Name);
8482 pragma Inline (Aux_Decls_Node);
8483 pragma Inline (Backwards_OK);
8484 pragma Inline (Bad_Is_Detected);
8485 pragma Inline (Body_To_Inline);
8486 pragma Inline (Body_Required);
8487 pragma Inline (By_Ref);
8488 pragma Inline (Box_Present);
8489 pragma Inline (Char_Literal_Value);
8490 pragma Inline (Chars);
8491 pragma Inline (Check_Address_Alignment);
8492 pragma Inline (Choice_Parameter);
8493 pragma Inline (Choices);
8494 pragma Inline (Compile_Time_Known_Aggregate);
8495 pragma Inline (Component_Associations);
8496 pragma Inline (Component_Clauses);
8497 pragma Inline (Component_Definition);
8498 pragma Inline (Component_Items);
8499 pragma Inline (Component_List);
8500 pragma Inline (Component_Name);
8501 pragma Inline (Condition);
8502 pragma Inline (Condition_Actions);
8503 pragma Inline (Config_Pragmas);
8504 pragma Inline (Constant_Present);
8505 pragma Inline (Constraint);
8506 pragma Inline (Constraints);
8507 pragma Inline (Context_Installed);
8508 pragma Inline (Context_Items);
8509 pragma Inline (Controlling_Argument);
8510 pragma Inline (Conversion_OK);
8511 pragma Inline (Corresponding_Body);
8512 pragma Inline (Corresponding_Generic_Association);
8513 pragma Inline (Corresponding_Integer_Value);
8514 pragma Inline (Corresponding_Spec);
8515 pragma Inline (Corresponding_Stub);
8516 pragma Inline (Dcheck_Function);
8517 pragma Inline (Debug_Statement);
8518 pragma Inline (Declarations);
8519 pragma Inline (Default_Expression);
8520 pragma Inline (Default_Name);
8521 pragma Inline (Defining_Identifier);
8522 pragma Inline (Defining_Unit_Name);
8523 pragma Inline (Delay_Alternative);
8524 pragma Inline (Delay_Finalize_Attach);
8525 pragma Inline (Delay_Statement);
8526 pragma Inline (Delta_Expression);
8527 pragma Inline (Digits_Expression);
8528 pragma Inline (Discr_Check_Funcs_Built);
8529 pragma Inline (Discrete_Choices);
8530 pragma Inline (Discrete_Range);
8531 pragma Inline (Discrete_Subtype_Definition);
8532 pragma Inline (Discrete_Subtype_Definitions);
8533 pragma Inline (Discriminant_Specifications);
8534 pragma Inline (Discriminant_Type);
8535 pragma Inline (Do_Accessibility_Check);
8536 pragma Inline (Do_Discriminant_Check);
8537 pragma Inline (Do_Length_Check);
8538 pragma Inline (Do_Division_Check);
8539 pragma Inline (Do_Overflow_Check);
8540 pragma Inline (Do_Range_Check);
8541 pragma Inline (Do_Storage_Check);
8542 pragma Inline (Do_Tag_Check);
8543 pragma Inline (Elaborate_Present);
8544 pragma Inline (Elaborate_All_Present);
8545 pragma Inline (Elaboration_Boolean);
8546 pragma Inline (Else_Actions);
8547 pragma Inline (Else_Statements);
8548 pragma Inline (Elsif_Parts);
8549 pragma Inline (Enclosing_Variant);
8550 pragma Inline (End_Label);
8551 pragma Inline (End_Span);
8552 pragma Inline (Entity);
8553 pragma Inline (Entity_Or_Associated_Node);
8554 pragma Inline (Entry_Body_Formal_Part);
8555 pragma Inline (Entry_Call_Alternative);
8556 pragma Inline (Entry_Call_Statement);
8557 pragma Inline (Entry_Direct_Name);
8558 pragma Inline (Entry_Index);
8559 pragma Inline (Entry_Index_Specification);
8560 pragma Inline (Etype);
8561 pragma Inline (Exception_Choices);
8562 pragma Inline (Exception_Junk);
8563 pragma Inline (Exception_Handlers);
8564 pragma Inline (Expansion_Delayed);
8565 pragma Inline (Explicit_Actual_Parameter);
8566 pragma Inline (Explicit_Generic_Actual_Parameter);
8567 pragma Inline (Expression);
8568 pragma Inline (Expressions);
8569 pragma Inline (First_Bit);
8570 pragma Inline (First_Inlined_Subprogram);
8571 pragma Inline (First_Name);
8572 pragma Inline (First_Named_Actual);
8573 pragma Inline (First_Real_Statement);
8574 pragma Inline (First_Subtype_Link);
8575 pragma Inline (Float_Truncate);
8576 pragma Inline (Formal_Type_Definition);
8577 pragma Inline (Forwards_OK);
8578 pragma Inline (From_At_Mod);
8579 pragma Inline (Generic_Associations);
8580 pragma Inline (Generic_Formal_Declarations);
8581 pragma Inline (Generic_Parent);
8582 pragma Inline (Generic_Parent_Type);
8583 pragma Inline (Handled_Statement_Sequence);
8584 pragma Inline (Handler_List_Entry);
8585 pragma Inline (Has_Created_Identifier);
8586 pragma Inline (Has_Dynamic_Length_Check);
8587 pragma Inline (Has_Dynamic_Range_Check);
8588 pragma Inline (Has_No_Elaboration_Code);
8589 pragma Inline (Has_Priority_Pragma);
8590 pragma Inline (Has_Private_View);
8591 pragma Inline (Has_Storage_Size_Pragma);
8592 pragma Inline (Has_Task_Info_Pragma);
8593 pragma Inline (Has_Task_Name_Pragma);
8594 pragma Inline (Has_Wide_Character);
8595 pragma Inline (Hidden_By_Use_Clause);
8596 pragma Inline (High_Bound);
8597 pragma Inline (Identifier);
8598 pragma Inline (Implicit_With);
8599 pragma Inline (Includes_Infinities);
8600 pragma Inline (In_Present);
8601 pragma Inline (Instance_Spec);
8602 pragma Inline (Intval);
8603 pragma Inline (Is_Asynchronous_Call_Block);
8604 pragma Inline (Is_Component_Left_Opnd);
8605 pragma Inline (Is_Component_Right_Opnd);
8606 pragma Inline (Is_Controlling_Actual);
8607 pragma Inline (Is_In_Discriminant_Check);
8608 pragma Inline (Is_Machine_Number);
8609 pragma Inline (Is_Null_Loop);
8610 pragma Inline (Is_Overloaded);
8611 pragma Inline (Is_Power_Of_2_For_Shift);
8612 pragma Inline (Is_Protected_Subprogram_Body);
8613 pragma Inline (Is_Static_Expression);
8614 pragma Inline (Is_Subprogram_Descriptor);
8615 pragma Inline (Is_Task_Allocation_Block);
8616 pragma Inline (Is_Task_Master);
8617 pragma Inline (Iteration_Scheme);
8618 pragma Inline (Itype);
8619 pragma Inline (Kill_Range_Check);
8620 pragma Inline (Last_Bit);
8621 pragma Inline (Last_Name);
8622 pragma Inline (Library_Unit);
8623 pragma Inline (Label_Construct);
8624 pragma Inline (Left_Opnd);
8625 pragma Inline (Limited_View_Installed);
8626 pragma Inline (Limited_Present);
8627 pragma Inline (Literals);
8628 pragma Inline (Loop_Actions);
8629 pragma Inline (Loop_Parameter_Specification);
8630 pragma Inline (Low_Bound);
8631 pragma Inline (Mod_Clause);
8632 pragma Inline (More_Ids);
8633 pragma Inline (Must_Be_Byte_Aligned);
8634 pragma Inline (Must_Not_Freeze);
8635 pragma Inline (Name);
8636 pragma Inline (Names);
8637 pragma Inline (Next_Entity);
8638 pragma Inline (Next_Named_Actual);
8639 pragma Inline (Next_Rep_Item);
8640 pragma Inline (Next_Use_Clause);
8641 pragma Inline (No_Ctrl_Actions);
8642 pragma Inline (No_Elaboration_Check);
8643 pragma Inline (No_Entities_Ref_In_Spec);
8644 pragma Inline (No_Initialization);
8645 pragma Inline (No_Truncation);
8646 pragma Inline (Null_Present);
8647 pragma Inline (Null_Record_Present);
8648 pragma Inline (Object_Definition);
8649 pragma Inline (OK_For_Stream);
8650 pragma Inline (Original_Discriminant);
8651 pragma Inline (Original_Entity);
8652 pragma Inline (Others_Discrete_Choices);
8653 pragma Inline (Out_Present);
8654 pragma Inline (Parameter_Associations);
8655 pragma Inline (Parameter_Specifications);
8656 pragma Inline (Parameter_List_Truncated);
8657 pragma Inline (Parameter_Type);
8658 pragma Inline (Parent_Spec);
8659 pragma Inline (Position);
8660 pragma Inline (Pragma_Argument_Associations);
8661 pragma Inline (Pragmas_After);
8662 pragma Inline (Pragmas_Before);
8663 pragma Inline (Prefix);
8664 pragma Inline (Present_Expr);
8665 pragma Inline (Prev_Ids);
8666 pragma Inline (Print_In_Hex);
8667 pragma Inline (Private_Declarations);
8668 pragma Inline (Private_Present);
8669 pragma Inline (Procedure_To_Call);
8670 pragma Inline (Proper_Body);
8671 pragma Inline (Protected_Definition);
8672 pragma Inline (Protected_Present);
8673 pragma Inline (Raises_Constraint_Error);
8674 pragma Inline (Range_Constraint);
8675 pragma Inline (Range_Expression);
8676 pragma Inline (Real_Range_Specification);
8677 pragma Inline (Realval);
8678 pragma Inline (Reason);
8679 pragma Inline (Record_Extension_Part);
8680 pragma Inline (Redundant_Use);
8681 pragma Inline (Return_Type);
8682 pragma Inline (Reverse_Present);
8683 pragma Inline (Right_Opnd);
8684 pragma Inline (Rounded_Result);
8685 pragma Inline (Scope);
8686 pragma Inline (Select_Alternatives);
8687 pragma Inline (Selector_Name);
8688 pragma Inline (Selector_Names);
8689 pragma Inline (Shift_Count_OK);
8690 pragma Inline (Source_Type);
8691 pragma Inline (Specification);
8692 pragma Inline (Statements);
8693 pragma Inline (Static_Processing_OK);
8694 pragma Inline (Storage_Pool);
8695 pragma Inline (Strval);
8696 pragma Inline (Subtype_Indication);
8697 pragma Inline (Subtype_Mark);
8698 pragma Inline (Subtype_Marks);
8699 pragma Inline (Tagged_Present);
8700 pragma Inline (Target_Type);
8701 pragma Inline (Task_Body_Procedure);
8702 pragma Inline (Task_Definition);
8703 pragma Inline (Then_Actions);
8704 pragma Inline (Then_Statements);
8705 pragma Inline (Triggering_Alternative);
8706 pragma Inline (Triggering_Statement);
8707 pragma Inline (Treat_Fixed_As_Integer);
8708 pragma Inline (TSS_Elist);
8709 pragma Inline (Type_Definition);
8710 pragma Inline (Unit);
8711 pragma Inline (Unknown_Discriminants_Present);
8712 pragma Inline (Unreferenced_In_Spec);
8713 pragma Inline (Variant_Part);
8714 pragma Inline (Variants);
8715 pragma Inline (Visible_Declarations);
8716 pragma Inline (Was_Originally_Stub);
8717 pragma Inline (Zero_Cost_Handling);
8719 pragma Inline (Set_ABE_Is_Certain);
8720 pragma Inline (Set_Abort_Present);
8721 pragma Inline (Set_Abortable_Part);
8722 pragma Inline (Set_Abstract_Present);
8723 pragma Inline (Set_Accept_Handler_Records);
8724 pragma Inline (Set_Accept_Statement);
8725 pragma Inline (Set_Access_Definition);
8726 pragma Inline (Set_Access_Types_To_Process);
8727 pragma Inline (Set_Actions);
8728 pragma Inline (Set_Activation_Chain_Entity);
8729 pragma Inline (Set_Acts_As_Spec);
8730 pragma Inline (Set_Aggregate_Bounds);
8731 pragma Inline (Set_Aliased_Present);
8732 pragma Inline (Set_All_Others);
8733 pragma Inline (Set_All_Present);
8734 pragma Inline (Set_Alternatives);
8735 pragma Inline (Set_Ancestor_Part);
8736 pragma Inline (Set_Array_Aggregate);
8737 pragma Inline (Set_Assignment_OK);
8738 pragma Inline (Set_Associated_Node);
8739 pragma Inline (Set_At_End_Proc);
8740 pragma Inline (Set_Attribute_Name);
8741 pragma Inline (Set_Aux_Decls_Node);
8742 pragma Inline (Set_Backwards_OK);
8743 pragma Inline (Set_Bad_Is_Detected);
8744 pragma Inline (Set_Body_To_Inline);
8745 pragma Inline (Set_Body_Required);
8746 pragma Inline (Set_By_Ref);
8747 pragma Inline (Set_Box_Present);
8748 pragma Inline (Set_Char_Literal_Value);
8749 pragma Inline (Set_Chars);
8750 pragma Inline (Set_Check_Address_Alignment);
8751 pragma Inline (Set_Choice_Parameter);
8752 pragma Inline (Set_Choices);
8753 pragma Inline (Set_Compile_Time_Known_Aggregate);
8754 pragma Inline (Set_Component_Associations);
8755 pragma Inline (Set_Component_Clauses);
8756 pragma Inline (Set_Component_Definition);
8757 pragma Inline (Set_Component_Items);
8758 pragma Inline (Set_Component_List);
8759 pragma Inline (Set_Component_Name);
8760 pragma Inline (Set_Condition);
8761 pragma Inline (Set_Condition_Actions);
8762 pragma Inline (Set_Config_Pragmas);
8763 pragma Inline (Set_Constant_Present);
8764 pragma Inline (Set_Constraint);
8765 pragma Inline (Set_Constraints);
8766 pragma Inline (Set_Context_Installed);
8767 pragma Inline (Set_Context_Items);
8768 pragma Inline (Set_Controlling_Argument);
8769 pragma Inline (Set_Conversion_OK);
8770 pragma Inline (Set_Corresponding_Body);
8771 pragma Inline (Set_Corresponding_Generic_Association);
8772 pragma Inline (Set_Corresponding_Integer_Value);
8773 pragma Inline (Set_Corresponding_Spec);
8774 pragma Inline (Set_Corresponding_Stub);
8775 pragma Inline (Set_Dcheck_Function);
8776 pragma Inline (Set_Debug_Statement);
8777 pragma Inline (Set_Declarations);
8778 pragma Inline (Set_Default_Expression);
8779 pragma Inline (Set_Default_Name);
8780 pragma Inline (Set_Defining_Identifier);
8781 pragma Inline (Set_Defining_Unit_Name);
8782 pragma Inline (Set_Delay_Alternative);
8783 pragma Inline (Set_Delay_Finalize_Attach);
8784 pragma Inline (Set_Delay_Statement);
8785 pragma Inline (Set_Delta_Expression);
8786 pragma Inline (Set_Digits_Expression);
8787 pragma Inline (Set_Discr_Check_Funcs_Built);
8788 pragma Inline (Set_Discrete_Choices);
8789 pragma Inline (Set_Discrete_Range);
8790 pragma Inline (Set_Discrete_Subtype_Definition);
8791 pragma Inline (Set_Discrete_Subtype_Definitions);
8792 pragma Inline (Set_Discriminant_Specifications);
8793 pragma Inline (Set_Discriminant_Type);
8794 pragma Inline (Set_Do_Accessibility_Check);
8795 pragma Inline (Set_Do_Discriminant_Check);
8796 pragma Inline (Set_Do_Length_Check);
8797 pragma Inline (Set_Do_Division_Check);
8798 pragma Inline (Set_Do_Overflow_Check);
8799 pragma Inline (Set_Do_Range_Check);
8800 pragma Inline (Set_Do_Storage_Check);
8801 pragma Inline (Set_Do_Tag_Check);
8802 pragma Inline (Set_Elaborate_Present);
8803 pragma Inline (Set_Elaborate_All_Present);
8804 pragma Inline (Set_Elaboration_Boolean);
8805 pragma Inline (Set_Else_Actions);
8806 pragma Inline (Set_Else_Statements);
8807 pragma Inline (Set_Elsif_Parts);
8808 pragma Inline (Set_Enclosing_Variant);
8809 pragma Inline (Set_End_Label);
8810 pragma Inline (Set_End_Span);
8811 pragma Inline (Set_Entity);
8812 pragma Inline (Set_Entry_Body_Formal_Part);
8813 pragma Inline (Set_Entry_Call_Alternative);
8814 pragma Inline (Set_Entry_Call_Statement);
8815 pragma Inline (Set_Entry_Direct_Name);
8816 pragma Inline (Set_Entry_Index);
8817 pragma Inline (Set_Entry_Index_Specification);
8818 pragma Inline (Set_Etype);
8819 pragma Inline (Set_Exception_Choices);
8820 pragma Inline (Set_Exception_Junk);
8821 pragma Inline (Set_Exception_Handlers);
8822 pragma Inline (Set_Expansion_Delayed);
8823 pragma Inline (Set_Explicit_Actual_Parameter);
8824 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
8825 pragma Inline (Set_Expression);
8826 pragma Inline (Set_Expressions);
8827 pragma Inline (Set_First_Bit);
8828 pragma Inline (Set_First_Inlined_Subprogram);
8829 pragma Inline (Set_First_Name);
8830 pragma Inline (Set_First_Named_Actual);
8831 pragma Inline (Set_First_Real_Statement);
8832 pragma Inline (Set_First_Subtype_Link);
8833 pragma Inline (Set_Float_Truncate);
8834 pragma Inline (Set_Formal_Type_Definition);
8835 pragma Inline (Set_Forwards_OK);
8836 pragma Inline (Set_From_At_Mod);
8837 pragma Inline (Set_Generic_Associations);
8838 pragma Inline (Set_Generic_Formal_Declarations);
8839 pragma Inline (Set_Generic_Parent);
8840 pragma Inline (Set_Generic_Parent_Type);
8841 pragma Inline (Set_Handled_Statement_Sequence);
8842 pragma Inline (Set_Handler_List_Entry);
8843 pragma Inline (Set_Has_Created_Identifier);
8844 pragma Inline (Set_Has_Dynamic_Length_Check);
8845 pragma Inline (Set_Has_Dynamic_Range_Check);
8846 pragma Inline (Set_Has_No_Elaboration_Code);
8847 pragma Inline (Set_Has_Priority_Pragma);
8848 pragma Inline (Set_Has_Private_View);
8849 pragma Inline (Set_Has_Storage_Size_Pragma);
8850 pragma Inline (Set_Has_Task_Info_Pragma);
8851 pragma Inline (Set_Has_Task_Name_Pragma);
8852 pragma Inline (Set_Has_Wide_Character);
8853 pragma Inline (Set_Hidden_By_Use_Clause);
8854 pragma Inline (Set_High_Bound);
8855 pragma Inline (Set_Identifier);
8856 pragma Inline (Set_Implicit_With);
8857 pragma Inline (Set_Includes_Infinities);
8858 pragma Inline (Set_In_Present);
8859 pragma Inline (Set_Instance_Spec);
8860 pragma Inline (Set_Intval);
8861 pragma Inline (Set_Is_Asynchronous_Call_Block);
8862 pragma Inline (Set_Is_Component_Left_Opnd);
8863 pragma Inline (Set_Is_Component_Right_Opnd);
8864 pragma Inline (Set_Is_Controlling_Actual);
8865 pragma Inline (Set_Is_In_Discriminant_Check);
8866 pragma Inline (Set_Is_Machine_Number);
8867 pragma Inline (Set_Is_Null_Loop);
8868 pragma Inline (Set_Is_Overloaded);
8869 pragma Inline (Set_Is_Power_Of_2_For_Shift);
8870 pragma Inline (Set_Is_Protected_Subprogram_Body);
8871 pragma Inline (Set_Is_Static_Expression);
8872 pragma Inline (Set_Is_Subprogram_Descriptor);
8873 pragma Inline (Set_Is_Task_Allocation_Block);
8874 pragma Inline (Set_Is_Task_Master);
8875 pragma Inline (Set_Iteration_Scheme);
8876 pragma Inline (Set_Itype);
8877 pragma Inline (Set_Kill_Range_Check);
8878 pragma Inline (Set_Last_Bit);
8879 pragma Inline (Set_Last_Name);
8880 pragma Inline (Set_Library_Unit);
8881 pragma Inline (Set_Label_Construct);
8882 pragma Inline (Set_Left_Opnd);
8883 pragma Inline (Set_Limited_View_Installed);
8884 pragma Inline (Set_Limited_Present);
8885 pragma Inline (Set_Literals);
8886 pragma Inline (Set_Loop_Actions);
8887 pragma Inline (Set_Loop_Parameter_Specification);
8888 pragma Inline (Set_Low_Bound);
8889 pragma Inline (Set_Mod_Clause);
8890 pragma Inline (Set_More_Ids);
8891 pragma Inline (Set_Must_Be_Byte_Aligned);
8892 pragma Inline (Set_Must_Not_Freeze);
8893 pragma Inline (Set_Name);
8894 pragma Inline (Set_Names);
8895 pragma Inline (Set_Next_Entity);
8896 pragma Inline (Set_Next_Named_Actual);
8897 pragma Inline (Set_Next_Use_Clause);
8898 pragma Inline (Set_No_Ctrl_Actions);
8899 pragma Inline (Set_No_Elaboration_Check);
8900 pragma Inline (Set_No_Entities_Ref_In_Spec);
8901 pragma Inline (Set_No_Initialization);
8902 pragma Inline (Set_No_Truncation);
8903 pragma Inline (Set_Null_Present);
8904 pragma Inline (Set_Null_Record_Present);
8905 pragma Inline (Set_Object_Definition);
8906 pragma Inline (Set_OK_For_Stream);
8907 pragma Inline (Set_Original_Discriminant);
8908 pragma Inline (Set_Original_Entity);
8909 pragma Inline (Set_Others_Discrete_Choices);
8910 pragma Inline (Set_Out_Present);
8911 pragma Inline (Set_Parameter_Associations);
8912 pragma Inline (Set_Parameter_Specifications);
8913 pragma Inline (Set_Parameter_List_Truncated);
8914 pragma Inline (Set_Parameter_Type);
8915 pragma Inline (Set_Parent_Spec);
8916 pragma Inline (Set_Position);
8917 pragma Inline (Set_Pragma_Argument_Associations);
8918 pragma Inline (Set_Pragmas_After);
8919 pragma Inline (Set_Pragmas_Before);
8920 pragma Inline (Set_Prefix);
8921 pragma Inline (Set_Present_Expr);
8922 pragma Inline (Set_Prev_Ids);
8923 pragma Inline (Set_Print_In_Hex);
8924 pragma Inline (Set_Private_Declarations);
8925 pragma Inline (Set_Private_Present);
8926 pragma Inline (Set_Procedure_To_Call);
8927 pragma Inline (Set_Proper_Body);
8928 pragma Inline (Set_Protected_Definition);
8929 pragma Inline (Set_Protected_Present);
8930 pragma Inline (Set_Raises_Constraint_Error);
8931 pragma Inline (Set_Range_Constraint);
8932 pragma Inline (Set_Range_Expression);
8933 pragma Inline (Set_Real_Range_Specification);
8934 pragma Inline (Set_Realval);
8935 pragma Inline (Set_Reason);
8936 pragma Inline (Set_Record_Extension_Part);
8937 pragma Inline (Set_Redundant_Use);
8938 pragma Inline (Set_Return_Type);
8939 pragma Inline (Set_Reverse_Present);
8940 pragma Inline (Set_Right_Opnd);
8941 pragma Inline (Set_Rounded_Result);
8942 pragma Inline (Set_Scope);
8943 pragma Inline (Set_Select_Alternatives);
8944 pragma Inline (Set_Selector_Name);
8945 pragma Inline (Set_Selector_Names);
8946 pragma Inline (Set_Shift_Count_OK);
8947 pragma Inline (Set_Source_Type);
8948 pragma Inline (Set_Specification);
8949 pragma Inline (Set_Statements);
8950 pragma Inline (Set_Static_Processing_OK);
8951 pragma Inline (Set_Storage_Pool);
8952 pragma Inline (Set_Strval);
8953 pragma Inline (Set_Subtype_Indication);
8954 pragma Inline (Set_Subtype_Mark);
8955 pragma Inline (Set_Subtype_Marks);
8956 pragma Inline (Set_Tagged_Present);
8957 pragma Inline (Set_Target_Type);
8958 pragma Inline (Set_Task_Body_Procedure);
8959 pragma Inline (Set_Task_Definition);
8960 pragma Inline (Set_Then_Actions);
8961 pragma Inline (Set_Then_Statements);
8962 pragma Inline (Set_Triggering_Alternative);
8963 pragma Inline (Set_Triggering_Statement);
8964 pragma Inline (Set_Treat_Fixed_As_Integer);
8965 pragma Inline (Set_TSS_Elist);
8966 pragma Inline (Set_Type_Definition);
8967 pragma Inline (Set_Unit);
8968 pragma Inline (Set_Unknown_Discriminants_Present);
8969 pragma Inline (Set_Unreferenced_In_Spec);
8970 pragma Inline (Set_Variant_Part);
8971 pragma Inline (Set_Variants);
8972 pragma Inline (Set_Visible_Declarations);
8973 pragma Inline (Set_Was_Originally_Stub);
8974 pragma Inline (Set_Zero_Cost_Handling);