1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2011, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- This package defines the structure of the abstract syntax tree. The Tree
33 -- package provides a basic tree structure. Sinfo describes how this structure
34 -- is used to represent the syntax of an Ada program.
36 -- The grammar in the RM is followed very closely in the tree design, and is
37 -- repeated as part of this source file.
39 -- The tree contains not only the full syntactic representation of the
40 -- program, but also the results of semantic analysis. In particular, the
41 -- nodes for defining identifiers, defining character literals and defining
42 -- operator symbols, collectively referred to as entities, represent what
43 -- would normally be regarded as the symbol table information. In addition a
44 -- number of the tree nodes contain semantic information.
46 -- WARNING: Several files are automatically generated from this package.
47 -- See below for details.
49 with Namet; use Namet;
50 with Types; use Types;
51 with Uintp; use Uintp;
52 with Urealp; use Urealp;
56 ---------------------------------
57 -- Making Changes to This File --
58 ---------------------------------
60 -- If changes are made to this file, a number of related steps must be
61 -- carried out to ensure consistency. First, if a field access function is
62 -- added, it appears in these places:
65 -- The documentation associated with the field (if semantic)
66 -- The documentation associated with the node
67 -- The spec of the access function
68 -- The spec of the set procedure
69 -- The entries in Is_Syntactic_Field
70 -- The pragma Inline for the access function
71 -- The pragma Inline for the set procedure
73 -- The body of the access function
74 -- The body of the set procedure
76 -- The field chosen must be consistent in all places, and, for a node that
77 -- is a subexpression, must not overlap any of the standard expression
80 -- In addition, if any of the standard expression fields is changed, then
81 -- the utility program which creates the Treeprs spec (in file treeprs.ads)
82 -- must be updated appropriately, since it special cases expression fields.
84 -- If a new tree node is added, then the following changes are made
86 -- Add it to the documentation in the appropriate place
87 -- Add its fields to this documentation section
88 -- Define it in the appropriate classification in Node_Kind
89 -- In the body (sinfo), add entries to the access functions for all
90 -- its fields (except standard expression fields) to include the new
91 -- node in the checks.
92 -- Add an appropriate section to the case statement in sprint.adb
93 -- Add an appropriate section to the case statement in sem.adb
94 -- Add an appropriate section to the case statement in exp_util.adb
95 -- (Insert_Actions procedure)
96 -- For a subexpression, add an appropriate section to the case
97 -- statement in sem_eval.adb
98 -- For a subexpression, add an appropriate section to the case
99 -- statement in sem_res.adb
101 -- Finally, four utility programs must be run:
103 -- (Optional.) Run CSinfo to check that you have made the changes
104 -- consistently. It checks most of the rules given above. This utility
105 -- reads sinfo.ads and sinfo.adb and generates a report to standard
106 -- output. This step is optional because XSinfo runs CSinfo.
108 -- Run XSinfo to create sinfo.h, the corresponding C header. This
109 -- utility reads sinfo.ads and generates sinfo.h. Note that it does
110 -- not need to read sinfo.adb, since the contents of the body are
111 -- algorithmically determinable from the spec.
113 -- Run XTreeprs to create treeprs.ads, an updated version of the module
114 -- that is used to drive the tree print routine. This utility reads (but
115 -- does not modify) treeprs.adt, the template that provides the basic
116 -- structure of the file, and then fills in the data from the comments
119 -- Run XNmake to create nmake.ads and nmake.adb, the package body and
120 -- spec of the Nmake package which contains functions for constructing
123 -- The above steps are done automatically by the build scripts when you do
126 -- Note: sometime we could write a utility that actually generated the body
127 -- of sinfo from the spec instead of simply checking it, since, as noted
128 -- above, the contents of the body can be determined from the spec.
130 --------------------------------
131 -- Implicit Nodes in the Tree --
132 --------------------------------
134 -- Generally the structure of the tree very closely follows the grammar as
135 -- defined in the RM. However, certain nodes are omitted to save space and
136 -- simplify semantic processing. Two general classes of such omitted nodes
139 -- If the only possibilities for a non-terminal are one or more other
140 -- non-terminals (i.e. the rule is a "skinny" rule), then usually the
141 -- corresponding node is omitted from the tree, and the target construct
142 -- appears directly. For example, a real type definition is either
143 -- floating point definition or a fixed point definition. No explicit node
144 -- appears for real type definition. Instead either the floating point
145 -- definition or fixed point definition appears directly.
147 -- If a non-terminal corresponds to a list of some other non-terminal
148 -- (possibly with separating punctuation), then usually it is omitted from
149 -- the tree, and a list of components appears instead. For example,
150 -- sequence of statements does not appear explicitly in the tree. Instead
151 -- a list of statements appears directly.
153 -- Some additional cases of omitted nodes occur and are documented
154 -- individually. In particular, many nodes are omitted in the tree
155 -- generated for an expression.
157 -------------------------------------------
158 -- Handling of Defining Identifier Lists --
159 -------------------------------------------
161 -- In several declarative forms in the syntax, lists of defining
162 -- identifiers appear (object declarations, component declarations, number
163 -- declarations etc.)
165 -- The semantics of such statements are equivalent to a series of identical
166 -- declarations of single defining identifiers (except that conformance
167 -- checks require the same grouping of identifiers in the parameter case).
169 -- To simplify semantic processing, the parser breaks down such multiple
170 -- declaration cases into sequences of single declarations, duplicating
171 -- type and initialization information as required. The flags More_Ids and
172 -- Prev_Ids are used to record the original form of the source in the case
173 -- where the original source used a list of names, More_Ids being set on
174 -- all but the last name and Prev_Ids being set on all but the first name.
175 -- These flags are used to reconstruct the original source (e.g. in the
176 -- Sprint package), and also are included in the conformance checks, but
177 -- otherwise have no semantic significance.
179 -- Note: the reason that we use More_Ids and Prev_Ids rather than
180 -- First_Name and Last_Name flags is so that the flags are off in the
181 -- normal one identifier case, which minimizes tree print output.
183 -----------------------
184 -- Use of Node Lists --
185 -----------------------
187 -- With a few exceptions, if a construction of the form {non-terminal}
188 -- appears in the tree, lists are used in the corresponding tree node (see
189 -- package Nlists for handling of node lists). In this case a field of the
190 -- parent node points to a list of nodes for the non-terminal. The field
191 -- name for such fields has a plural name which always ends in "s". For
192 -- example, a case statement has a field Alternatives pointing to list of
193 -- case statement alternative nodes.
195 -- Only fields pointing to lists have names ending in "s", so generally the
196 -- structure is strongly typed, fields not ending in s point to single
197 -- nodes, and fields ending in s point to lists.
199 -- The following example shows how a traversal of a list is written. We
200 -- suppose here that Stmt points to a N_Case_Statement node which has a
201 -- list field called Alternatives:
203 -- Alt := First (Alternatives (Stmt));
204 -- while Present (Alt) loop
206 -- -- processing for case statement alternative Alt
208 -- Alt := Next (Alt);
211 -- The Present function tests for Empty, which in this case signals the end
212 -- of the list. First returns Empty immediately if the list is empty.
213 -- Present is defined in Atree, First and Next are defined in Nlists.
215 -- The exceptions to this rule occur with {DEFINING_IDENTIFIERS} in all
216 -- contexts, which is handled as described in the previous section, and
217 -- with {,library_unit_NAME} in the N_With_Clause mode, which is handled
218 -- using the First_Name and Last_Name flags, as further detailed in the
219 -- description of the N_With_Clause node.
225 -- Pragmas can appear in many different context, but are not included in
226 -- the grammar. Still they must appear in the tree, so they can be properly
229 -- Two approaches are used. In some cases, an extra field is defined in an
230 -- appropriate node that contains a list of pragmas appearing in the
231 -- expected context. For example pragmas can appear before an
232 -- Accept_Alternative in a Selective_Accept_Statement, and these pragmas
233 -- appear in the Pragmas_Before field of the N_Accept_Alternative node.
235 -- The other approach is to simply allow pragmas to appear in syntactic
236 -- lists where the grammar (of course) does not include the possibility.
237 -- For example, the Variants field of an N_Variant_Part node points to a
238 -- list that can contain both N_Pragma and N_Variant nodes.
240 -- To make processing easier in the latter case, the Nlists package
241 -- provides a set of routines (First_Non_Pragma, Last_Non_Pragma,
242 -- Next_Non_Pragma, Prev_Non_Pragma) that allow such lists to be handled
243 -- ignoring all pragmas.
245 -- In the case of the variants list, we can either write:
247 -- Variant := First (Variants (N));
248 -- while Present (Variant) loop
250 -- Variant := Next (Variant);
255 -- Variant := First_Non_Pragma (Variants (N));
256 -- while Present (Variant) loop
258 -- Variant := Next_Non_Pragma (Variant);
261 -- In the first form of the loop, Variant can either be an N_Pragma or an
262 -- N_Variant node. In the second form, Variant can only be N_Variant since
263 -- all pragmas are skipped.
265 ---------------------
266 -- Optional Fields --
267 ---------------------
269 -- Fields which correspond to a section of the syntax enclosed in square
270 -- brackets are generally omitted (and the corresponding field set to Empty
271 -- for a node, or No_List for a list). The documentation of such fields
272 -- notes these cases. One exception to this rule occurs in the case of
273 -- possibly empty statement sequences (such as the sequence of statements
274 -- in an entry call alternative). Such cases appear in the syntax rules as
275 -- [SEQUENCE_OF_STATEMENTS] and the fields corresponding to such optional
276 -- statement sequences always contain an empty list (not No_List) if no
277 -- statements are present.
279 -- Note: the utility program that constructs the body and spec of the Nmake
280 -- package relies on the format of the comments to determine if a field
281 -- should have a default value in the corresponding make routine. The rule
282 -- is that if the first line of the description of the field contains the
283 -- string "(set to xxx if", then a default value of xxx is provided for
284 -- this field in the corresponding Make_yyy routine.
286 -----------------------------------
287 -- Note on Body/Spec Terminology --
288 -----------------------------------
290 -- In informal discussions about Ada, it is customary to refer to package
291 -- and subprogram specs and bodies. However, this is not technically
292 -- correct, what is normally referred to as a spec or specification is in
293 -- fact a package declaration or subprogram declaration. We are careful in
294 -- GNAT to use the correct terminology and in particular, the full word
295 -- specification is never used as an incorrect substitute for declaration.
296 -- The structure and terminology used in the tree also reflects the grammar
297 -- and thus uses declaration and specification in the technically correct
300 -- However, there are contexts in which the informal terminology is useful.
301 -- We have the word "body" to refer to the Interp_Etype declared by the
302 -- declaration of a unit body, and in some contexts we need similar term to
303 -- refer to the entity declared by the package or subprogram declaration,
304 -- and simply using declaration can be confusing since the body also has a
307 -- An example of such a context is the link between the package body and
308 -- its declaration. With_Declaration is confusing, since the package body
309 -- itself is a declaration.
311 -- To deal with this problem, we reserve the informal term Spec, i.e. the
312 -- popular abbreviation used in this context, to refer to the entity
313 -- declared by the package or subprogram declaration. So in the above
314 -- example case, the field in the body is called With_Spec.
316 -- Another important context for the use of the word Spec is in error
317 -- messages, where a hyper-correct use of declaration would be confusing to
318 -- a typical Ada programmer, and even for an expert programmer can cause
319 -- confusion since the body has a declaration as well.
323 -- Declaration always refers to the syntactic entity that is called
324 -- a declaration. In particular, subprogram declaration
325 -- and package declaration are used to describe the
326 -- syntactic entity that includes the semicolon.
328 -- Specification always refers to the syntactic entity that is called
329 -- a specification. In particular, the terms procedure
330 -- specification, function specification, package
331 -- specification, subprogram specification always refer
332 -- to the syntactic entity that has no semicolon.
334 -- Spec is an informal term, used to refer to the entity
335 -- that is declared by a task declaration, protected
336 -- declaration, generic declaration, subprogram
337 -- declaration or package declaration.
339 -- This convention is followed throughout the GNAT documentation
340 -- both internal and external, and in all error message text.
342 ------------------------
343 -- Internal Use Nodes --
344 ------------------------
346 -- These are Node_Kind settings used in the internal implementation which
347 -- are not logically part of the specification.
350 -- Completely unused entry at the start of the enumeration type. This
351 -- is inserted so that no legitimate value is zero, which helps to get
352 -- better debugging behavior, since zero is a likely uninitialized value).
355 -- Completely unused entry at the end of the enumeration type. This is
356 -- handy so that arrays with Node_Kind as the index type have an extra
357 -- entry at the end (see for example the use of the Pchar_Pos_Array in
358 -- Treepr, where the extra entry provides the limit value when dealing with
359 -- the last used entry in the array).
361 -----------------------------------------
362 -- Note on the settings of Sloc fields --
363 -----------------------------------------
365 -- The Sloc field of nodes that come from the source is set by the parser.
366 -- For internal nodes, and nodes generated during expansion the Sloc is
367 -- usually set in the call to the constructor for the node. In general the
368 -- Sloc value chosen for an internal node is the Sloc of the source node
369 -- whose processing is responsible for the expansion. For example, the Sloc
370 -- of an inherited primitive operation is the Sloc of the corresponding
371 -- derived type declaration.
373 -- For the nodes of a generic instantiation, the Sloc value is encoded to
374 -- represent both the original Sloc in the generic unit, and the Sloc of
375 -- the instantiation itself. See Sinput.ads for details.
377 -- Subprogram instances create two callable entities: one is the visible
378 -- subprogram instance, and the other is an anonymous subprogram nested
379 -- within a wrapper package that contains the renamings for the actuals.
380 -- Both of these entities have the Sloc of the defining entity in the
381 -- instantiation node. This simplifies some ASIS queries.
383 -----------------------
384 -- Field Definitions --
385 -----------------------
387 -- In the following node definitions, all fields, both syntactic and
388 -- semantic, are documented. The one exception is in the case of entities
389 -- (defining identifiers, character literals and operator symbols), where
390 -- the usage of the fields depends on the entity kind. Entity fields are
391 -- fully documented in the separate package Einfo.
393 -- In the node definitions, three common sets of fields are abbreviated to
394 -- save both space in the documentation, and also space in the string
395 -- (defined in Tree_Print_Strings) used to print trees. The following
396 -- abbreviations are used:
398 -- Note: the utility program that creates the Treeprs spec (in the file
399 -- xtreeprs.adb) knows about the special fields here, so it must be
400 -- modified if any change is made to these fields.
402 -- "plus fields for binary operator"
403 -- Chars (Name1) Name_Id for the operator
404 -- Left_Opnd (Node2) left operand expression
405 -- Right_Opnd (Node3) right operand expression
406 -- Entity (Node4-Sem) defining entity for operator
407 -- Associated_Node (Node4-Sem) for generic processing
408 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
409 -- Has_Private_View (Flag11-Sem) set in generic units.
411 -- "plus fields for unary operator"
412 -- Chars (Name1) Name_Id for the operator
413 -- Right_Opnd (Node3) right operand expression
414 -- Entity (Node4-Sem) defining entity for operator
415 -- Associated_Node (Node4-Sem) for generic processing
416 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
417 -- Has_Private_View (Flag11-Sem) set in generic units.
419 -- "plus fields for expression"
420 -- Paren_Count number of parentheses levels
421 -- Etype (Node5-Sem) type of the expression
422 -- Is_Overloaded (Flag5-Sem) >1 type interpretation exists
423 -- Is_Static_Expression (Flag6-Sem) set for static expression
424 -- Raises_Constraint_Error (Flag7-Sem) evaluation raises CE
425 -- Must_Not_Freeze (Flag8-Sem) set if must not freeze
426 -- Do_Range_Check (Flag9-Sem) set if a range check needed
427 -- Has_Dynamic_Length_Check (Flag10-Sem) set if length check inserted
428 -- Has_Dynamic_Range_Check (Flag12-Sem) set if range check inserted
429 -- Assignment_OK (Flag15-Sem) set if modification is OK
430 -- Is_Controlling_Actual (Flag16-Sem) set for controlling argument
432 -- Note: see under (EXPRESSION) for further details on the use of
433 -- the Paren_Count field to record the number of parentheses levels.
435 -- Node_Kind is the type used in the Nkind field to indicate the node kind.
436 -- The actual definition of this type is given later (the reason for this
437 -- is that we want the descriptions ordered by logical chapter in the RM,
438 -- but the type definition is reordered to facilitate the definition of
439 -- some subtype ranges. The individual descriptions of the nodes show how
440 -- the various fields are used in each node kind, as well as providing
441 -- logical names for the fields. Functions and procedures are provided for
442 -- accessing and setting these fields using these logical names.
444 -----------------------
445 -- Gigi Restrictions --
446 -----------------------
448 -- The tree passed to Gigi is more restricted than the general tree form.
449 -- For example, as a result of expansion, most of the tasking nodes can
450 -- never appear. For each node to which either a complete or partial
451 -- restriction applies, a note entitled "Gigi restriction" appears which
452 -- documents the restriction.
454 -- Note that most of these restrictions apply only to trees generated when
455 -- code is being generated, since they involved expander actions that
458 ------------------------
459 -- Common Flag Fields --
460 ------------------------
462 -- The following flag fields appear in all nodes
465 -- This flag is used to indicate that a node (and all its children have
466 -- been analyzed. It is used to avoid reanalysis of a node that has
467 -- already been analyzed, both for efficiency and functional correctness
471 -- This flag is set if the node comes directly from an explicit construct
472 -- in the source. It is normally on for any nodes built by the scanner or
473 -- parser from the source program, with the exception that in a few cases
474 -- the parser adds nodes to normalize the representation (in particular
475 -- a null statement is added to a package body if there is no begin/end
476 -- initialization section.
478 -- Most nodes inserted by the analyzer or expander are not considered
479 -- as coming from source, so the flag is off for such nodes. In a few
480 -- cases, the expander constructs nodes closely equivalent to nodes
481 -- from the source program (e.g. the allocator built for build-in-place
482 -- case), and the Comes_From_Source flag is deliberately set.
485 -- This flag is used to avoid multiple error messages being posted on or
486 -- referring to the same node. This flag is set if an error message
487 -- refers to a node or is posted on its source location, and has the
488 -- effect of inhibiting further messages involving this same node.
490 ------------------------------------
491 -- Description of Semantic Fields --
492 ------------------------------------
494 -- The meaning of the syntactic fields is generally clear from their names
495 -- without any further description, since the names are chosen to
496 -- correspond very closely to the syntax in the reference manual. This
497 -- section describes the usage of the semantic fields, which are used to
498 -- contain additional information determined during semantic analysis.
500 -- ABE_Is_Certain (Flag18-Sem)
501 -- This flag is set in an instantiation node or a call node is determined
502 -- to be sure to raise an ABE. This is used to trigger special handling
503 -- of such cases, particularly in the instantiation case where we avoid
504 -- instantiating the body if this flag is set. This flag is also present
505 -- in an N_Formal_Package_Declaration_Node since formal package
506 -- declarations are treated like instantiations, but it is always set to
507 -- False in this context.
509 -- Accept_Handler_Records (List5-Sem)
510 -- This field is present only in an N_Accept_Alternative node. It is used
511 -- to temporarily hold the exception handler records from an accept
512 -- statement in a selective accept. These exception handlers will
513 -- eventually be placed in the Handler_Records list of the procedure
514 -- built for this accept (see Expand_N_Selective_Accept procedure in
515 -- Exp_Ch9 for further details).
517 -- Access_Types_To_Process (Elist2-Sem)
518 -- Present in N_Freeze_Entity nodes for Incomplete or private types.
519 -- Contains the list of access types which may require specific treatment
520 -- when the nature of the type completion is completely known. An example
521 -- of such treatment is the generation of the associated_final_chain.
523 -- Actions (List1-Sem)
524 -- This field contains a sequence of actions that are associated with the
525 -- node holding the field. See the individual node types for details of
526 -- how this field is used, as well as the description of the specific use
527 -- for a particular node type.
529 -- Activation_Chain_Entity (Node3-Sem)
530 -- This is used in tree nodes representing task activators (blocks,
531 -- subprogram bodies, package declarations, and task bodies). It is
532 -- initially Empty, and then gets set to point to the entity for the
533 -- declared Activation_Chain variable when the first task is declared.
534 -- When tasks are declared in the corresponding declarative region this
535 -- entity is located by name (its name is always _Chain) and the declared
536 -- tasks are added to the chain. Note that N_Extended_Return_Statement
537 -- does not have this attribute, although it does have an activation
538 -- chain. This chain is used to store the tasks temporarily, and is not
539 -- used for activating them. On successful completion of the return
540 -- statement, the tasks are moved to the caller's chain, and the caller
543 -- Acts_As_Spec (Flag4-Sem)
544 -- A flag set in the N_Subprogram_Body node for a subprogram body which
545 -- is acting as its own spec, except in the case of a library level
546 -- subprogram, in which case the flag is set on the parent compilation
547 -- unit node instead (see further description in spec of Lib package).
548 -- ??? Above note about Lib is dubious since lib.ads does not mention
549 -- Acts_As_Spec at all.
551 -- Actual_Designated_Subtype (Node4-Sem)
552 -- Present in N_Free_Statement and N_Explicit_Dereference nodes. If gigi
553 -- needs to known the dynamic constrained subtype of the designated
554 -- object, this attribute is set to that type. This is done for
555 -- N_Free_Statements for access-to-classwide types and access to
556 -- unconstrained packed array types, and for N_Explicit_Dereference when
557 -- the designated type is an unconstrained packed array and the
558 -- dereference is the prefix of a 'Size attribute reference.
560 -- Address_Warning_Posted (Flag18-Sem)
561 -- Present in N_Attribute_Definition nodes. Set to indicate that we have
562 -- posted a warning for the address clause regarding size or alignment
563 -- issues. Used to inhibit multiple redundant messages.
565 -- Aggregate_Bounds (Node3-Sem)
566 -- Present in array N_Aggregate nodes. If the bounds of the aggregate are
567 -- known at compile time, this field points to an N_Range node with those
568 -- bounds. Otherwise Empty.
570 -- All_Others (Flag11-Sem)
571 -- Present in an N_Others_Choice node. This flag is set for an others
572 -- exception where all exceptions are to be caught, even those that are
573 -- not normally handled (in particular the tasking abort signal). This
574 -- is used for translation of the at end handler into a normal exception
577 -- Aspect_Rep_Item (Node2-Sem)
578 -- Present in N_Aspect_Specification nodes. Points to the corresponding
579 -- pragma/attribute definition node used to process the aspect.
581 -- Assignment_OK (Flag15-Sem)
582 -- This flag is set in a subexpression node for an object, indicating
583 -- that the associated object can be modified, even if this would not
584 -- normally be permissible (either by direct assignment, or by being
585 -- passed as an out or in-out parameter). This is used by the expander
586 -- for a number of purposes, including initialization of constants and
587 -- limited type objects (such as tasks), setting discriminant fields,
588 -- setting tag values, etc. N_Object_Declaration nodes also have this
589 -- flag defined. Here it is used to indicate that an initialization
590 -- expression is valid, even where it would normally not be allowed
591 -- (e.g. where the type involved is limited).
593 -- Associated_Node (Node4-Sem)
594 -- Present in nodes that can denote an entity: identifiers, character
595 -- literals, operator symbols, expanded names, operator nodes, and
596 -- attribute reference nodes (all these nodes have an Entity field).
597 -- This field is also present in N_Aggregate, N_Selected_Component, and
598 -- N_Extension_Aggregate nodes. This field is used in generic processing
599 -- to create links between the generic template and the generic copy.
600 -- See Sem_Ch12.Get_Associated_Node for full details. Note that this
601 -- field overlaps Entity, which is fine, since, as explained in Sem_Ch12,
602 -- the normal function of Entity is not required at the point where the
603 -- Associated_Node is set. Note also, that in generic templates, this
604 -- means that the Entity field does not necessarily point to an Entity.
605 -- Since the back end is expected to ignore generic templates, this is
608 -- Atomic_Sync_Required (Flag14-Sem)
609 -- This flag is set on a node for which atomic synchronization is
610 -- required for the corresponding reference or modification.
612 -- At_End_Proc (Node1)
613 -- This field is present in an N_Handled_Sequence_Of_Statements node.
614 -- It contains an identifier reference for the cleanup procedure to be
615 -- called. See description of this node for further details.
617 -- Backwards_OK (Flag6-Sem)
618 -- A flag present in the N_Assignment_Statement node. It is used only
619 -- if the type being assigned is an array type, and is set if analysis
620 -- determines that it is definitely safe to do the copy backwards, i.e.
621 -- starting at the highest addressed element. This is the case if either
622 -- the operands do not overlap, or they may overlap, but if they do,
623 -- then the left operand is at a higher address than the right operand.
625 -- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
626 -- means that the front end could not determine that either direction is
627 -- definitely safe, and a runtime check may be required if the backend
628 -- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
629 -- set, it means that the front end can assure no overlap of operands.
631 -- Body_To_Inline (Node3-Sem)
632 -- present in subprogram declarations. Denotes analyzed but unexpanded
633 -- body of subprogram, to be used when inlining calls. Present when the
634 -- subprogram has an Inline pragma and inlining is enabled. If the
635 -- declaration is completed by a renaming_as_body, and the renamed en-
636 -- tity is a subprogram, the Body_To_Inline is the name of that entity,
637 -- which is used directly in later calls to the original subprogram.
639 -- Body_Required (Flag13-Sem)
640 -- A flag that appears in the N_Compilation_Unit node indicating that
641 -- the corresponding unit requires a body. For the package case, this
642 -- indicates that a completion is required. In Ada 95, if the flag is not
643 -- set for the package case, then a body may not be present. In Ada 83,
644 -- if the flag is not set for the package case, then body is optional.
645 -- For a subprogram declaration, the flag is set except in the case where
646 -- a pragma Import or Interface applies, in which case no body is
647 -- permitted (in Ada 83 or Ada 95).
649 -- By_Ref (Flag5-Sem)
650 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement,
651 -- this flag is set when the returned expression is already allocated on
652 -- the secondary stack and thus the result is passed by reference rather
653 -- than copied another time.
655 -- Check_Address_Alignment (Flag11-Sem)
656 -- A flag present in N_Attribute_Definition clause for a 'Address
657 -- attribute definition. This flag is set if a dynamic check should be
658 -- generated at the freeze point for the entity to which this address
659 -- clause applies. The reason that we need this flag is that we want to
660 -- check for range checks being suppressed at the point where the
661 -- attribute definition clause is given, rather than testing this at the
664 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
665 -- Present in N_Simple_Return_Statement nodes. True if this node was
666 -- constructed as part of the N_Extended_Return_Statement expansion.
668 -- Compile_Time_Known_Aggregate (Flag18-Sem)
669 -- Present in N_Aggregate nodes. Set for aggregates which can be fully
670 -- evaluated at compile time without raising constraint error. Such
671 -- aggregates can be passed as is to Gigi without any expansion. See
672 -- Sem_Aggr for the specific conditions under which an aggregate has this
673 -- flag set. See also the flag Static_Processing_OK.
675 -- Componentwise_Assignment (Flag14-Sem)
676 -- Present in N_Assignment_Statement nodes. Set for a record assignment
677 -- where all that needs doing is to expand it into component-by-component
678 -- assignments. This is used internally for the case of tagged types with
679 -- rep clauses, where we need to avoid recursion (we don't want to try to
680 -- generate a call to the primitive operation, because this is the case
681 -- where we are compiling the primitive operation). Note that when we are
682 -- expanding component assignments in this case, we never assign the _tag
683 -- field, but we recursively assign components of the parent type.
685 -- Condition_Actions (List3-Sem)
686 -- This field appears in else-if nodes and in the iteration scheme node
687 -- for while loops. This field is only used during semantic processing to
688 -- temporarily hold actions inserted into the tree. In the tree passed
689 -- to gigi, the condition actions field is always set to No_List. For
690 -- details on how this field is used, see the routine Insert_Actions in
691 -- package Exp_Util, and also the expansion routines for the relevant
694 -- Context_Pending (Flag16-Sem)
695 -- This field appears in Compilation_Unit nodes, to indicate that the
696 -- context of the unit is being compiled. Used to detect circularities
697 -- that are not otherwise detected by the loading mechanism. Such
698 -- circularities can occur in the presence of limited and non-limited
699 -- with_clauses that mention the same units.
701 -- Controlling_Argument (Node1-Sem)
702 -- This field is set in procedure and function call nodes if the call
703 -- is a dispatching call (it is Empty for a non-dispatching call). It
704 -- indicates the source of the call's controlling tag. For procedure
705 -- calls, the Controlling_Argument is one of the actuals. For function
706 -- that has a dispatching result, it is an entity in the context of the
707 -- call that can provide a tag, or else it is the tag of the root type
708 -- of the class. It can also specify a tag directly rather than being a
709 -- tagged object. The latter is needed by the implementations of AI-239
712 -- Conversion_OK (Flag14-Sem)
713 -- A flag set on type conversion nodes to indicate that the conversion
714 -- is to be considered as being valid, even though it is the case that
715 -- the conversion is not valid Ada. This is used for attributes Enum_Rep,
716 -- Fixed_Value and Integer_Value, for internal conversions done for
717 -- fixed-point operations, and for certain conversions for calls to
718 -- initialization procedures. If Conversion_OK is set, then Etype must be
719 -- set (the analyzer assumes that Etype has been set). For the case of
720 -- fixed-point operands, it also indicates that the conversion is to be
721 -- direct conversion of the underlying integer result, with no regard to
722 -- the small operand.
724 -- Corresponding_Aspect (Node3-Sem)
725 -- Present in N_Pragma node. Used to point back to the source aspect from
726 -- the corresponding pragma. This field is Empty for source pragmas.
728 -- Corresponding_Body (Node5-Sem)
729 -- This field is set in subprogram declarations, package declarations,
730 -- entry declarations of protected types, and in generic units. It points
731 -- to the defining entity for the corresponding body (NOT the node for
734 -- Corresponding_Formal_Spec (Node3-Sem)
735 -- This field is set in subprogram renaming declarations, where it points
736 -- to the defining entity for a formal subprogram in the case where the
737 -- renaming corresponds to a generic formal subprogram association in an
738 -- instantiation. The field is Empty if the renaming does not correspond
739 -- to such a formal association.
741 -- Corresponding_Generic_Association (Node5-Sem)
742 -- This field is defined for object declarations and object renaming
743 -- declarations. It is set for the declarations within an instance that
744 -- map generic formals to their actuals. If set, the field points to
745 -- a generic_association which is the original parent of the expression
746 -- or name appearing in the declaration. This simplifies ASIS queries.
748 -- Corresponding_Integer_Value (Uint4-Sem)
749 -- This field is set in real literals of fixed-point types (it is not
750 -- used for floating-point types). It contains the integer value used
751 -- to represent the fixed-point value. It is also set on the universal
752 -- real literals used to represent bounds of fixed-point base types
753 -- and their first named subtypes.
755 -- Corresponding_Spec (Node5-Sem)
756 -- This field is set in subprogram, package, task, and protected body
757 -- nodes, where it points to the defining entity in the corresponding
758 -- spec. The attribute is also set in N_With_Clause nodes where it points
759 -- to the defining entity for the with'ed spec, and in a subprogram
760 -- renaming declaration when it is a Renaming_As_Body. The field is Empty
761 -- if there is no corresponding spec, as in the case of a subprogram body
762 -- that serves as its own spec.
764 -- In Ada 2012, Corresponding_Spec is set on expression functions that
765 -- complete a subprogram declaration.
767 -- Corresponding_Stub (Node3-Sem)
768 -- This field is present in an N_Subunit node. It holds the node in
769 -- the parent unit that is the stub declaration for the subunit. It is
770 -- set when analysis of the stub forces loading of the proper body. If
771 -- expansion of the proper body creates new declarative nodes, they are
772 -- inserted at the point of the corresponding_stub.
774 -- Dcheck_Function (Node5-Sem)
775 -- This field is present in an N_Variant node, It references the entity
776 -- for the discriminant checking function for the variant.
778 -- Default_Expression (Node5-Sem)
779 -- This field is Empty if there is no default expression. If there is a
780 -- simple default expression (one with no side effects), then this field
781 -- simply contains a copy of the Expression field (both point to the tree
782 -- for the default expression). Default_Expression is used for
783 -- conformance checking.
785 -- Default_Storage_Pool (Node3-Sem)
786 -- This field is present in N_Compilation_Unit_Aux nodes. It is set to a
787 -- copy of Opt.Default_Pool at the end of the compilation unit. See
788 -- package Opt for details. This is used for inheriting the
789 -- Default_Storage_Pool in child units.
791 -- Discr_Check_Funcs_Built (Flag11-Sem)
792 -- This flag is present in N_Full_Type_Declaration nodes. It is set when
793 -- discriminant checking functions are constructed. The purpose is to
794 -- avoid attempting to set these functions more than once.
796 -- Do_Accessibility_Check (Flag13-Sem)
797 -- This flag is set on N_Parameter_Specification nodes to indicate
798 -- that an accessibility check is required for the parameter. It is
799 -- not yet decided who takes care of this check (TBD ???).
801 -- Do_Discriminant_Check (Flag13-Sem)
802 -- This flag is set on N_Selected_Component nodes to indicate that a
803 -- discriminant check is required using the discriminant check routine
804 -- associated with the selector. The actual check is generated by the
805 -- expander when processing selected components.
807 -- Do_Division_Check (Flag13-Sem)
808 -- This flag is set on a division operator (/ mod rem) to indicate
809 -- that a zero divide check is required. The actual check is dealt
810 -- with by the backend (all the front end does is to set the flag).
812 -- Do_Length_Check (Flag4-Sem)
813 -- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
814 -- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
815 -- is required. It is not determined who deals with this flag (???).
817 -- Do_Overflow_Check (Flag17-Sem)
818 -- This flag is set on an operator where an overflow check is required on
819 -- the operation. The actual check is dealt with by the backend (all the
820 -- front end does is to set the flag). The other cases where this flag is
821 -- used is on a Type_Conversion node and for attribute reference nodes.
822 -- For a type conversion, it means that the conversion is from one base
823 -- type to another, and the value may not fit in the target base type.
824 -- See also the description of Do_Range_Check for this case. The only
825 -- attribute references which use this flag are Pred and Succ, where it
826 -- means that the result should be checked for going outside the base
827 -- range. Note that this flag is not set for modular types.
829 -- Do_Range_Check (Flag9-Sem)
830 -- This flag is set on an expression which appears in a context where a
831 -- range check is required. The target type is clear from the context.
832 -- The contexts in which this flag can appear are the following:
834 -- Right side of an assignment. In this case the target type is
835 -- taken from the left side of the assignment, which is referenced
836 -- by the Name of the N_Assignment_Statement node.
838 -- Subscript expressions in an indexed component. In this case the
839 -- target type is determined from the type of the array, which is
840 -- referenced by the Prefix of the N_Indexed_Component node.
842 -- Argument expression for a parameter, appearing either directly in
843 -- the Parameter_Associations list of a call or as the Expression of an
844 -- N_Parameter_Association node that appears in this list. In either
845 -- case, the check is against the type of the formal. Note that the
846 -- flag is relevant only in IN and IN OUT parameters, and will be
847 -- ignored for OUT parameters, where no check is required in the call,
848 -- and if a check is required on the return, it is generated explicitly
849 -- with a type conversion.
851 -- Initialization expression for the initial value in an object
852 -- declaration. In this case the Do_Range_Check flag is set on
853 -- the initialization expression, and the check is against the
854 -- range of the type of the object being declared.
856 -- The expression of a type conversion. In this case the range check is
857 -- against the target type of the conversion. See also the use of
858 -- Do_Overflow_Check on a type conversion. The distinction is that the
859 -- overflow check protects against a value that is outside the range of
860 -- the target base type, whereas a range check checks that the
861 -- resulting value (which is a value of the base type of the target
862 -- type), satisfies the range constraint of the target type.
864 -- Note: when a range check is required in contexts other than those
865 -- listed above (e.g. in a return statement), an additional type
866 -- conversion node is introduced to represent the required check.
868 -- Do_Storage_Check (Flag17-Sem)
869 -- This flag is set in an N_Allocator node to indicate that a storage
870 -- check is required for the allocation, or in an N_Subprogram_Body node
871 -- to indicate that a stack check is required in the subprogram prolog.
872 -- The N_Allocator case is handled by the routine that expands the call
873 -- to the runtime routine. The N_Subprogram_Body case is handled by the
874 -- backend, and all the semantics does is set the flag.
876 -- Do_Tag_Check (Flag13-Sem)
877 -- This flag is set on an N_Assignment_Statement, N_Function_Call,
878 -- N_Procedure_Call_Statement, N_Type_Conversion,
879 -- N_Simple_Return_Statement, or N_Extended_Return_Statement
880 -- node to indicate that the tag check can be suppressed. It is not
881 -- yet decided how this flag is used (TBD ???).
883 -- Elaborate_Present (Flag4-Sem)
884 -- This flag is set in the N_With_Clause node to indicate that pragma
885 -- Elaborate pragma appears for the with'ed units.
887 -- Elaborate_All_Desirable (Flag9-Sem)
888 -- This flag is set in the N_With_Clause mode to indicate that the static
889 -- elaboration processing has determined that an Elaborate_All pragma is
890 -- desirable for correct elaboration for this unit.
892 -- Elaborate_All_Present (Flag14-Sem)
893 -- This flag is set in the N_With_Clause node to indicate that a
894 -- pragma Elaborate_All pragma appears for the with'ed units.
896 -- Elaborate_Desirable (Flag11-Sem)
897 -- This flag is set in the N_With_Clause mode to indicate that the static
898 -- elaboration processing has determined that an Elaborate pragma is
899 -- desirable for correct elaboration for this unit.
901 -- Elaboration_Boolean (Node2-Sem)
902 -- This field is present in function and procedure specification nodes.
903 -- If set, it points to the entity for a Boolean flag that must be tested
904 -- for certain calls to check for access before elaboration. See body of
905 -- Sem_Elab for further details. This field is Empty if no elaboration
906 -- boolean is required.
908 -- Else_Actions (List3-Sem)
909 -- This field is present in conditional expression nodes. During code
910 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
911 -- actions at an appropriate place in the tree to get elaborated at the
912 -- right time. For conditional expressions, we have to be sure that the
913 -- actions for the Else branch are only elaborated if the condition is
914 -- False. The Else_Actions field is used as a temporary parking place for
915 -- these actions. The final tree is always rewritten to eliminate the
916 -- need for this field, so in the tree passed to Gigi, this field is
917 -- always set to No_List.
919 -- Enclosing_Variant (Node2-Sem)
920 -- This field is present in the N_Variant node and identifies the Node_Id
921 -- corresponding to the immediately enclosing variant when the variant is
922 -- nested, and N_Empty otherwise. Set during semantic processing of the
923 -- variant part of a record type.
925 -- Entity (Node4-Sem)
926 -- Appears in all direct names (identifiers, character literals, and
927 -- operator symbols), as well as expanded names, and attributes that
928 -- denote entities, such as 'Class. Points to entity for corresponding
929 -- defining occurrence. Set after name resolution. For identifiers in a
930 -- WITH list, the corresponding defining occurrence is in a separately
931 -- compiled file, and Entity must be set by the library Load procedure.
933 -- Note: During name resolution, the value in Entity may be temporarily
934 -- incorrect (e.g. during overload resolution, Entity is initially set to
935 -- the first possible correct interpretation, and then later modified if
936 -- necessary to contain the correct value after resolution).
938 -- Note: This field overlaps Associated_Node, which is used during
939 -- generic processing (see Sem_Ch12 for details). Note also that in
940 -- generic templates, this means that the Entity field does not always
941 -- point to an Entity. Since the back end is expected to ignore generic
942 -- templates, this is harmless.
944 -- Note: This field also appears in N_Attribute_Definition_Clause nodes.
945 -- It is used only for stream attributes definition clauses. In this
946 -- case, it denotes a (possibly dummy) subprogram entity that is declared
947 -- conceptually at the point of the clause. Thus the visibility of the
948 -- attribute definition clause (in the sense of 8.3(23) as amended by
949 -- AI-195) can be checked by testing the visibility of that subprogram.
951 -- Note: Normally the Entity field of an identifier points to the entity
952 -- for the corresponding defining identifier, and hence the Chars field
953 -- of an identifier will match the Chars field of the entity. However,
954 -- there is no requirement that these match, and there are obscure cases
955 -- of generated code where they do not match.
957 -- Note: Ada 2012 aspect specifications require additional links between
958 -- identifiers and various attributes. These attributes can be of
959 -- arbitrary types, and the entity field of identifiers that denote
960 -- aspects must be used to store arbitrary expressions for later semantic
961 -- checks. See section on aspect specifications for details.
963 -- Entity_Or_Associated_Node (Node4-Sem)
964 -- A synonym for both Entity and Associated_Node. Used by convention in
965 -- the code when referencing this field in cases where it is not known
966 -- whether the field contains an Entity or an Associated_Node.
969 -- Appears in all expression nodes, all direct names, and all entities.
970 -- Points to the entity for the related type. Set after type resolution.
971 -- Normally this is the actual subtype of the expression. However, in
972 -- certain contexts such as the right side of an assignment, subscripts,
973 -- arguments to calls, returned value in a function, initial value etc.
974 -- it is the desired target type. In the event that this is different
975 -- from the actual type, the Do_Range_Check flag will be set if a range
976 -- check is required. Note: if the Is_Overloaded flag is set, then Etype
977 -- points to an essentially arbitrary choice from the possible set of
980 -- Exception_Junk (Flag8-Sem)
981 -- This flag is set in a various nodes appearing in a statement sequence
982 -- to indicate that the corresponding node is an artifact of the
983 -- generated code for exception handling, and should be ignored when
984 -- analyzing the control flow of the relevant sequence of statements
985 -- (e.g. to check that it does not end with a bad return statement).
987 -- Exception_Label (Node5-Sem)
988 -- Appears in N_Push_xxx_Label nodes. Points to the entity of the label
989 -- to be used for transforming the corresponding exception into a goto,
990 -- or contains Empty, if this exception is not to be transformed. Also
991 -- appears in N_Exception_Handler nodes, where, if set, it indicates
992 -- that there may be a local raise for the handler, so that expansion
993 -- to allow a goto is required (and this field contains the label for
994 -- this goto). See Exp_Ch11.Expand_Local_Exception_Handlers for details.
996 -- Expansion_Delayed (Flag11-Sem)
997 -- Set on aggregates and extension aggregates that need a top-down rather
998 -- than bottom-up expansion. Typically aggregate expansion happens bottom
999 -- up. For nested aggregates the expansion is delayed until the enclosing
1000 -- aggregate itself is expanded, e.g. in the context of a declaration. To
1001 -- delay it we set this flag. This is done to avoid creating a temporary
1002 -- for each level of a nested aggregates, and also to prevent the
1003 -- premature generation of constraint checks. This is also a requirement
1004 -- if we want to generate the proper attachment to the internal
1005 -- finalization lists (for record with controlled components). Top down
1006 -- expansion of aggregates is also used for in-place array aggregate
1007 -- assignment or initialization. When the full context is known, the
1008 -- target of the assignment or initialization is used to generate the
1009 -- left-hand side of individual assignment to each sub-component.
1011 -- First_Inlined_Subprogram (Node3-Sem)
1012 -- Present in the N_Compilation_Unit node for the main program. Points
1013 -- to a chain of entities for subprograms that are to be inlined. The
1014 -- Next_Inlined_Subprogram field of these entities is used as a link
1015 -- pointer with Empty marking the end of the list. This field is Empty
1016 -- if there are no inlined subprograms or inlining is not active.
1018 -- First_Named_Actual (Node4-Sem)
1019 -- Present in procedure call statement and function call nodes, and also
1020 -- in Intrinsic nodes. Set during semantic analysis to point to the first
1021 -- named parameter where parameters are ordered by declaration order (as
1022 -- opposed to the actual order in the call which may be different due to
1023 -- named associations). Note: this field points to the explicit actual
1024 -- parameter itself, not the N_Parameter_Association node (its parent).
1026 -- First_Real_Statement (Node2-Sem)
1027 -- Present in N_Handled_Sequence_Of_Statements node. Normally set to
1028 -- Empty. Used only when declarations are moved into the statement part
1029 -- of a construct as a result of wrapping an AT END handler that is
1030 -- required to cover the declarations. In this case, this field is used
1031 -- to remember the location in the statements list of the first real
1032 -- statement, i.e. the statement that used to be first in the statement
1033 -- list before the declarations were prepended.
1035 -- First_Subtype_Link (Node5-Sem)
1036 -- Present in N_Freeze_Entity node for an anonymous base type that is
1037 -- implicitly created by the declaration of a first subtype. It points
1038 -- to the entity for the first subtype.
1040 -- Float_Truncate (Flag11-Sem)
1041 -- A flag present in type conversion nodes. This is used for float to
1042 -- integer conversions where truncation is required rather than rounding.
1043 -- Note that Gigi does not handle type conversions from real to integer
1044 -- with rounding (see Expand_N_Type_Conversion).
1046 -- Forwards_OK (Flag5-Sem)
1047 -- A flag present in the N_Assignment_Statement node. It is used only
1048 -- if the type being assigned is an array type, and is set if analysis
1049 -- determines that it is definitely safe to do the copy forwards, i.e.
1050 -- starting at the lowest addressed element. This is the case if either
1051 -- the operands do not overlap, or they may overlap, but if they do,
1052 -- then the left operand is at a lower address than the right operand.
1054 -- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
1055 -- means that the front end could not determine that either direction is
1056 -- definitely safe, and a runtime check may be required if the backend
1057 -- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
1058 -- set, it means that the front end can assure no overlap of operands.
1060 -- From_Aspect_Specification (Flag13-Sem)
1061 -- Processing of aspect specifications typically results in insertion in
1062 -- the tree of corresponding pragma or attribute definition clause nodes.
1063 -- These generated nodes have the From_Aspect_Specification flag set to
1064 -- indicate that they came from aspect specifications originally.
1066 -- From_At_End (Flag4-Sem)
1067 -- This flag is set on an N_Raise_Statement node if it corresponds to
1068 -- the reraise statement generated as the last statement of an AT END
1069 -- handler when SJLJ exception handling is active. It is used to stop
1070 -- a bogus violation of restriction (No_Exception_Propagation), bogus
1071 -- because if the restriction is set, the reraise is not generated.
1073 -- From_At_Mod (Flag4-Sem)
1074 -- This flag is set on the attribute definition clause node that is
1075 -- generated by a transformation of an at mod phrase in a record
1076 -- representation clause. This is used to give slightly different (Ada 83
1077 -- compatible) semantics to such a clause, namely it is used to specify a
1078 -- minimum acceptable alignment for the base type and all subtypes. In
1079 -- Ada 95 terms, the actual alignment of the base type and all subtypes
1080 -- must be a multiple of the given value, and the representation clause
1081 -- is considered to be type specific instead of subtype specific.
1083 -- From_Default (Flag6-Sem)
1084 -- This flag is set on the subprogram renaming declaration created in an
1085 -- instance for a formal subprogram, when the formal is declared with a
1086 -- box, and there is no explicit actual. If the flag is present, the
1087 -- declaration is treated as an implicit reference to the formal in the
1090 -- Generic_Parent (Node5-Sem)
1091 -- Generic_Parent is defined on declaration nodes that are instances. The
1092 -- value of Generic_Parent is the generic entity from which the instance
1093 -- is obtained. Generic_Parent is also defined for the renaming
1094 -- declarations and object declarations created for the actuals in an
1095 -- instantiation. The generic parent of such a declaration is the
1096 -- corresponding generic association in the Instantiation node.
1098 -- Generic_Parent_Type (Node4-Sem)
1099 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for the
1100 -- actuals of formal private and derived types. Within the instance, the
1101 -- operations on the actual are those inherited from the parent. For a
1102 -- formal private type, the parent type is the generic type itself. The
1103 -- Generic_Parent_Type is also used in an instance to determine whether a
1104 -- private operation overrides an inherited one.
1106 -- Handler_List_Entry (Node2-Sem)
1107 -- This field is present in N_Object_Declaration nodes. It is set only
1108 -- for the Handler_Record entry generated for an exception in zero cost
1109 -- exception handling mode. It references the corresponding item in the
1110 -- handler list, and is used to delete this entry if the corresponding
1111 -- handler is deleted during optimization. For further details on why
1112 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
1114 -- Has_Dynamic_Length_Check (Flag10-Sem)
1115 -- This flag is present in all expression nodes. It is set to indicate
1116 -- that one of the routines in unit Checks has generated a length check
1117 -- action which has been inserted at the flagged node. This is used to
1118 -- avoid the generation of duplicate checks.
1120 -- Has_Dynamic_Range_Check (Flag12-Sem)
1121 -- This flag is present in N_Subtype_Declaration nodes and on all
1122 -- expression nodes. It is set to indicate that one of the routines in
1123 -- unit Checks has generated a range check action which has been inserted
1124 -- at the flagged node. This is used to avoid the generation of duplicate
1125 -- checks. Why does this occur on N_Subtype_Declaration nodes, what does
1126 -- it mean in that context???
1128 -- Has_Local_Raise (Flag8-Sem)
1129 -- Present in exception handler nodes. Set if the handler can be entered
1130 -- via a local raise that gets transformed to a goto statement. This will
1131 -- always be set if Local_Raise_Statements is non-empty, but can also be
1132 -- set as a result of generation of N_Raise_xxx nodes, or flags set in
1133 -- nodes requiring generation of back end checks.
1135 -- Has_No_Elaboration_Code (Flag17-Sem)
1136 -- A flag that appears in the N_Compilation_Unit node to indicate whether
1137 -- or not elaboration code is present for this unit. It is initially set
1138 -- true for subprogram specs and bodies and for all generic units and
1139 -- false for non-generic package specs and bodies. Gigi may set the flag
1140 -- in the non-generic package case if it determines that no elaboration
1141 -- code is generated. Note that this flag is not related to the
1142 -- Is_Preelaborated status, there can be preelaborated packages that
1143 -- generate elaboration code, and non-preelaborated packages which do
1144 -- not generate elaboration code.
1146 -- Has_Pragma_CPU (Flag14-Sem)
1147 -- A flag present in N_Subprogram_Body and N_Task_Definition nodes to
1148 -- flag the presence of a CPU pragma in the declaration sequence (public
1149 -- or private in the task case).
1151 -- Has_Pragma_Dispatching_Domain (Flag15-Sem)
1152 -- A flag present in N_Task_Definition nodes to flag the presence of a
1153 -- Dispatching_Domain pragma in the declaration sequence (public or
1154 -- private in the task case).
1156 -- Has_Pragma_Suppress_All (Flag14-Sem)
1157 -- This flag is set in an N_Compilation_Unit node if the Suppress_All
1158 -- pragma appears anywhere in the unit. This accommodates the rather
1159 -- strange placement rules of other compilers (DEC permits it at the
1160 -- end of a unit, and Rational allows it as a program unit pragma). We
1161 -- allow it anywhere at all, and consider it equivalent to a pragma
1162 -- Suppress (All_Checks) appearing at the start of the configuration
1163 -- pragmas for the unit.
1165 -- Has_Pragma_Priority (Flag6-Sem)
1166 -- A flag present in N_Subprogram_Body, N_Task_Definition and
1167 -- N_Protected_Definition nodes to flag the presence of either a Priority
1168 -- or Interrupt_Priority pragma in the declaration sequence (public or
1169 -- private in the task and protected cases)
1171 -- Has_Private_View (Flag11-Sem)
1172 -- A flag present in generic nodes that have an entity, to indicate that
1173 -- the node has a private type. Used to exchange private and full
1174 -- declarations if the visibility at instantiation is different from the
1175 -- visibility at generic definition.
1177 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
1178 -- A flag present in N_Subprogram_Body and N_Task_Definition nodes to
1179 -- flag the presence of a pragma Relative_Deadline.
1181 -- Has_Self_Reference (Flag13-Sem)
1182 -- Present in N_Aggregate and N_Extension_Aggregate. Indicates that one
1183 -- of the expressions contains an access attribute reference to the
1184 -- enclosing type. Such a self-reference can only appear in default-
1185 -- initialized aggregate for a record type.
1187 -- Has_Storage_Size_Pragma (Flag5-Sem)
1188 -- A flag present in an N_Task_Definition node to flag the presence of a
1189 -- Storage_Size pragma.
1191 -- Has_Task_Info_Pragma (Flag7-Sem)
1192 -- A flag present in an N_Task_Definition node to flag the presence of a
1193 -- Task_Info pragma. Used to detect duplicate pragmas.
1195 -- Has_Task_Name_Pragma (Flag8-Sem)
1196 -- A flag present in N_Task_Definition nodes to flag the presence of a
1197 -- Task_Name pragma in the declaration sequence for the task.
1199 -- Has_Wide_Character (Flag11-Sem)
1200 -- Present in string literals, set if any wide character (i.e. character
1201 -- code outside the Character range but within Wide_Character range)
1202 -- appears in the string. Used to implement pragma preference rules.
1204 -- Has_Wide_Wide_Character (Flag13-Sem)
1205 -- Present in string literals, set if any wide character (i.e. character
1206 -- code outside the Wide_Character range) appears in the string. Used to
1207 -- implement pragma preference rules.
1209 -- Header_Size_Added (Flag11-Sem)
1210 -- Present in N_Attribute_Reference nodes, set only for attribute
1211 -- Max_Size_In_Storage_Elements. The flag indicates that the size of the
1212 -- hidden list header used by the runtime finalization support has been
1213 -- added to the size of the prefix. The flag also prevents the infinite
1214 -- expansion of the same attribute in the said context.
1216 -- Hidden_By_Use_Clause (Elist4-Sem)
1217 -- An entity list present in use clauses that appear within
1218 -- instantiations. For the resolution of local entities, entities
1219 -- introduced by these use clauses have priority over global ones, and
1220 -- outer entities must be explicitly hidden/restored on exit.
1222 -- Implicit_With (Flag16-Sem)
1223 -- This flag is set in the N_With_Clause node that is implicitly
1224 -- generated for runtime units that are loaded by the expander, and also
1225 -- for package System, if it is loaded implicitly by a use of the
1226 -- 'Address or 'Tag attribute. ???There are other implicit with clauses
1229 -- Import_Interface_Present (Flag16-Sem)
1230 -- This flag is set in an Interface or Import pragma if a matching
1231 -- pragma of the other kind is also present. This is used to avoid
1232 -- generating some unwanted error messages.
1234 -- Includes_Infinities (Flag11-Sem)
1235 -- This flag is present in N_Range nodes. It is set for the range of
1236 -- unconstrained float types defined in Standard, which include not only
1237 -- the given range of values, but also legitimately can include infinite
1238 -- values. This flag is false for any float type for which an explicit
1239 -- range is given by the programmer, even if that range is identical to
1240 -- the range for Float.
1242 -- Inherited_Discriminant (Flag13-Sem)
1243 -- This flag is present in N_Component_Association nodes. It indicates
1244 -- that a given component association in an extension aggregate is the
1245 -- value obtained from a constraint on an ancestor. Used to prevent
1246 -- double expansion when the aggregate has expansion delayed.
1248 -- Instance_Spec (Node5-Sem)
1249 -- This field is present in generic instantiation nodes, and also in
1250 -- formal package declaration nodes (formal package declarations are
1251 -- treated in a manner very similar to package instantiations). It points
1252 -- to the node for the spec of the instance, inserted as part of the
1253 -- semantic processing for instantiations in Sem_Ch12.
1255 -- Is_Accessibility_Actual (Flag12-Sem)
1256 -- Present in N_Parameter_Association nodes. True if the parameter is
1257 -- an extra actual that carries the accessibility level of the actual
1258 -- for an access parameter, in a function that dispatches on result and
1259 -- is called in a dispatching context. Used to prevent a formal/actual
1260 -- mismatch when the call is rewritten as a dispatching call.
1262 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1263 -- A flag set in a Block_Statement node to indicate that it is the
1264 -- expansion of an asynchronous entry call. Such a block needs cleanup
1265 -- handler to assure that the call is cancelled.
1267 -- Is_Boolean_Aspect (Flag16-Sem)
1268 -- Present in N_Aspect_Specification node. Set if the aspect is for a
1269 -- boolean aspect (i.e. Aspect_Id is in Boolean_Aspect subtype).
1271 -- Is_Component_Left_Opnd (Flag13-Sem)
1272 -- Is_Component_Right_Opnd (Flag14-Sem)
1273 -- Present in concatenation nodes, to indicate that the corresponding
1274 -- operand is of the component type of the result. Used in resolving
1275 -- concatenation nodes in instances.
1277 -- Is_Delayed_Aspect (Flag14-Sem)
1278 -- Present in N_Pragma and N_Attribute_Definition_Clause nodes which
1279 -- come from aspect specifications, where the evaluation of the aspect
1280 -- must be delayed to the freeze point. This flag is also set True in
1281 -- the corresponding N_Aspect_Specification node.
1283 -- Is_Controlling_Actual (Flag16-Sem)
1284 -- This flag is set on in an expression that is a controlling argument in
1285 -- a dispatching call. It is off in all other cases. See Sem_Disp for
1286 -- details of its use.
1288 -- Is_Dynamic_Coextension (Flag18-Sem)
1289 -- Present in allocator nodes, to indicate that this is an allocator
1290 -- for an access discriminant of a dynamically allocated object. The
1291 -- coextension must be deallocated and finalized at the same time as
1292 -- the enclosing object.
1294 -- Is_Entry_Barrier_Function (Flag8-Sem)
1295 -- This flag is set in an N_Subprogram_Body node which is the expansion
1296 -- of an entry barrier from a protected entry body. It is used for the
1297 -- circuitry checking for incorrect use of Current_Task.
1299 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
1300 -- This flag is set in an N_Function_Call node to indicate that the extra
1301 -- actuals to support a build-in-place style of call have been added to
1304 -- Is_In_Discriminant_Check (Flag11-Sem)
1305 -- This flag is present in a selected component, and is used to indicate
1306 -- that the reference occurs within a discriminant check. The
1307 -- significance is that optimizations based on assuming that the
1308 -- discriminant check has a correct value cannot be performed in this
1309 -- case (or the discriminant check may be optimized away!)
1311 -- Is_Machine_Number (Flag11-Sem)
1312 -- This flag is set in an N_Real_Literal node to indicate that the value
1313 -- is a machine number. This avoids some unnecessary cases of converting
1314 -- real literals to machine numbers.
1316 -- Is_Null_Loop (Flag16-Sem)
1317 -- This flag is set in an N_Loop_Statement node if the corresponding loop
1318 -- can be determined to be null at compile time. This is used to remove
1319 -- the loop entirely at expansion time.
1321 -- Is_Overloaded (Flag5-Sem)
1322 -- A flag present in all expression nodes. Used temporarily during
1323 -- overloading determination. The setting of this flag is not relevant
1324 -- once overloading analysis is complete.
1326 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1327 -- A flag present only in N_Op_Expon nodes. It is set when the
1328 -- exponentiation is of the form 2 ** N, where the type of N is an
1329 -- unsigned integral subtype whose size does not exceed the size of
1330 -- Standard_Integer (i.e. a type that can be safely converted to
1331 -- Natural), and the exponentiation appears as the right operand of an
1332 -- integer multiplication or an integer division where the dividend is
1333 -- unsigned. It is also required that overflow checking is off for both
1334 -- the exponentiation and the multiply/divide node. If this set of
1335 -- conditions holds, and the flag is set, then the division or
1336 -- multiplication can be (and is) converted to a shift.
1338 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1339 -- A flag set in a Subprogram_Body block to indicate that it is the
1340 -- implementation of a protected subprogram. Such a body needs cleanup
1341 -- handler to make sure that the associated protected object is unlocked
1342 -- when the subprogram completes.
1344 -- Is_Static_Coextension (Flag14-Sem)
1345 -- Present in N_Allocator nodes. Set if the allocator is a coextension
1346 -- of an object allocated on the stack rather than the heap.
1348 -- Is_Static_Expression (Flag6-Sem)
1349 -- Indicates that an expression is a static expression (RM 4.9). See spec
1350 -- of package Sem_Eval for full details on the use of this flag.
1352 -- Is_Subprogram_Descriptor (Flag16-Sem)
1353 -- Present in N_Object_Declaration, and set only for the object
1354 -- declaration generated for a subprogram descriptor in fast exception
1355 -- mode. See Exp_Ch11 for details of use.
1357 -- Is_Task_Allocation_Block (Flag6-Sem)
1358 -- A flag set in a Block_Statement node to indicate that it is the
1359 -- expansion of a task allocator, or the allocator of an object
1360 -- containing tasks. Such a block requires a cleanup handler to call
1361 -- Expunge_Unactivated_Tasks to complete any tasks that have been
1362 -- allocated but not activated when the allocator completes abnormally.
1364 -- Is_Task_Master (Flag5-Sem)
1365 -- A flag set in a Subprogram_Body, Block_Statement or Task_Body node to
1366 -- indicate that the construct is a task master (i.e. has declared tasks
1367 -- or declares an access to a task type).
1369 -- Itype (Node1-Sem)
1370 -- Used in N_Itype_Reference node to reference an itype for which it is
1371 -- important to ensure that it is defined. See description of this node
1372 -- for further details.
1374 -- Kill_Range_Check (Flag11-Sem)
1375 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
1376 -- result should not be subjected to range checks. This is used for the
1377 -- implementation of Normalize_Scalars.
1379 -- Label_Construct (Node2-Sem)
1380 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
1381 -- N_Block_Statement or N_Loop_Statement node to which the label
1382 -- declaration applies. This is not currently used in the compiler
1383 -- itself, but it is useful in the implementation of ASIS queries.
1384 -- This field is left empty for the special labels generated as part
1385 -- of expanding raise statements with a local exception handler.
1387 -- Library_Unit (Node4-Sem)
1388 -- In a stub node, Library_Unit points to the compilation unit node of
1389 -- the corresponding subunit.
1391 -- In a with clause node, Library_Unit points to the spec of the with'ed
1394 -- In a compilation unit node, the usage depends on the unit type:
1396 -- For a library unit body, Library_Unit points to the compilation unit
1397 -- node of the corresponding spec, unless it's a subprogram body with
1398 -- Acts_As_Spec set, in which case it points to itself.
1400 -- For a spec, Library_Unit points to the compilation unit node of the
1401 -- corresponding body, if present. The body will be present if the spec
1402 -- is or contains generics that we needed to instantiate. Similarly, the
1403 -- body will be present if we needed it for inlining purposes. Thus, if
1404 -- we have a spec/body pair, both of which are present, they point to
1405 -- each other via Library_Unit.
1407 -- For a subunit, Library_Unit points to the compilation unit node of
1410 -- Note that this field is not used to hold the parent pointer for child
1411 -- unit (which might in any case need to use it for some other purpose as
1412 -- described above). Instead for a child unit, implicit with's are
1413 -- generated for all parents.
1415 -- Local_Raise_Statements (Elist1)
1416 -- This field is present in exception handler nodes. It is set to
1417 -- No_Elist in the normal case. If there is at least one raise statement
1418 -- which can potentially be handled as a local raise, then this field
1419 -- points to a list of raise nodes, which are calls to a routine to raise
1420 -- an exception. These are raise nodes which can be optimized into gotos
1421 -- if the handler turns out to meet the conditions which permit this
1422 -- transformation. Note that this does NOT include instances of the
1423 -- N_Raise_xxx_Error nodes since the transformation of these nodes is
1424 -- handled by the back end (using the N_Push/N_Pop mechanism).
1426 -- Loop_Actions (List2-Sem)
1427 -- A list present in Component_Association nodes in array aggregates.
1428 -- Used to collect actions that must be executed within the loop because
1429 -- they may need to be evaluated anew each time through.
1431 -- Limited_View_Installed (Flag18-Sem)
1432 -- Present in With_Clauses and in package specifications. If set on
1433 -- with_clause, it indicates that this clause has created the current
1434 -- limited view of the designated package. On a package specification, it
1435 -- indicates that the limited view has already been created because the
1436 -- package is mentioned in a limited_with_clause in the closure of the
1437 -- unit being compiled.
1439 -- Local_Raise_Not_OK (Flag7-Sem)
1440 -- Present in N_Exception_Handler nodes. Set if the handler contains
1441 -- a construct (reraise statement, or call to subprogram in package
1442 -- GNAT.Current_Exception) that makes the handler unsuitable as a target
1443 -- for a local raise (one that could otherwise be converted to a goto).
1445 -- Must_Be_Byte_Aligned (Flag14-Sem)
1446 -- This flag is present in N_Attribute_Reference nodes. It can be set
1447 -- only for the Address and Unrestricted_Access attributes. If set it
1448 -- means that the object for which the address/access is given must be on
1449 -- a byte (more accurately a storage unit) boundary. If necessary, a copy
1450 -- of the object is to be made before taking the address (this copy is in
1451 -- the current scope on the stack frame). This is used for certain cases
1452 -- of code generated by the expander that passes parameters by address.
1454 -- The reason the copy is not made by the front end is that the back end
1455 -- has more information about type layout and may be able to (but is not
1456 -- guaranteed to) prevent making unnecessary copies.
1458 -- Must_Not_Freeze (Flag8-Sem)
1459 -- A flag present in all expression nodes. Normally expressions cause
1460 -- freezing as described in the RM. If this flag is set, then this is
1461 -- inhibited. This is used by the analyzer and expander to label nodes
1462 -- that are created by semantic analysis or expansion and which must not
1463 -- cause freezing even though they normally would. This flag is also
1464 -- present in an N_Subtype_Indication node, since we also use these in
1465 -- calls to Freeze_Expression.
1467 -- Next_Entity (Node2-Sem)
1468 -- Present in defining identifiers, defining character literals and
1469 -- defining operator symbols (i.e. in all entities). The entities of a
1470 -- scope are chained, and this field is used as the forward pointer for
1471 -- this list. See Einfo for further details.
1473 -- Next_Exit_Statement (Node3-Sem)
1474 -- Present in N_Exit_Statement nodes. The exit statements for a loop are
1475 -- chained (in reverse order of appearance) from the First_Exit_Statement
1476 -- field of the E_Loop entity for the loop. Next_Exit_Statement points to
1477 -- the next entry on this chain (Empty = end of list).
1479 -- Next_Implicit_With (Node3-Sem)
1480 -- Present in N_With_Clause. Part of a chain of with_clauses generated
1481 -- in rtsfind to indicate implicit dependencies on predefined units. Used
1482 -- to prevent multiple with_clauses for the same unit in a given context.
1483 -- A postorder traversal of the tree whose nodes are units and whose
1484 -- links are with_clauses defines the order in which Inspector must
1485 -- examine a compiled unit and its full context. This ordering ensures
1486 -- that any subprogram call is examined after the subprogram declaration
1489 -- Next_Named_Actual (Node4-Sem)
1490 -- Present in parameter association node. Set during semantic analysis to
1491 -- point to the next named parameter, where parameters are ordered by
1492 -- declaration order (as opposed to the actual order in the call, which
1493 -- may be different due to named associations). Not that this field
1494 -- points to the explicit actual parameter itself, not to the
1495 -- N_Parameter_Association node (its parent).
1497 -- Next_Pragma (Node1-Sem)
1498 -- Present in N_Pragma nodes. Used to create a linked list of pragma
1499 -- nodes. Currently used for two purposes:
1501 -- Create a list of linked Check_Policy pragmas. The head of this list
1502 -- is stored in Opt.Check_Policy_List (which has further details).
1504 -- Used by processing for Pre/Postcondition pragmas to store a list of
1505 -- pragmas associated with the spec of a subprogram (see Sem_Prag for
1508 -- Next_Rep_Item (Node5-Sem)
1509 -- Present in pragma nodes, attribute definition nodes, enumeration rep
1510 -- clauses, record rep clauses, aspect specification nodes. Used to link
1511 -- representation items that apply to an entity. See full description of
1512 -- First_Rep_Item field in Einfo for further details.
1514 -- Next_Use_Clause (Node3-Sem)
1515 -- While use clauses are active during semantic processing, they are
1516 -- chained from the scope stack entry, using Next_Use_Clause as a link
1517 -- pointer, with Empty marking the end of the list. The head pointer is
1518 -- in the scope stack entry (First_Use_Clause). At the end of semantic
1519 -- processing (i.e. when Gigi sees the tree, the contents of this field
1520 -- is undefined and should not be read).
1522 -- No_Ctrl_Actions (Flag7-Sem)
1523 -- Present in N_Assignment_Statement to indicate that no finalize nor
1524 -- adjust should take place on this assignment even though the rhs is
1525 -- controlled. This is used in init procs and aggregate expansions where
1526 -- the generated assignments are more initialisations than real
1529 -- No_Elaboration_Check (Flag14-Sem)
1530 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
1531 -- that no elaboration check is needed on the call, because it appears in
1532 -- the context of a local Suppress pragma. This is used on calls within
1533 -- task bodies, where the actual elaboration checks are applied after
1534 -- analysis, when the local scope stack is not present.
1536 -- No_Entities_Ref_In_Spec (Flag8-Sem)
1537 -- Present in N_With_Clause nodes. Set if the with clause is on the
1538 -- package or subprogram spec where the main unit is the corresponding
1539 -- body, and no entities of the with'ed unit are referenced by the spec
1540 -- (an entity may still be referenced in the body, so this flag is used
1541 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
1544 -- No_Initialization (Flag13-Sem)
1545 -- Present in N_Object_Declaration and N_Allocator to indicate that the
1546 -- object must not be initialized (by Initialize or call to an init
1547 -- proc). This is needed for controlled aggregates. When the Object
1548 -- declaration has an expression, this flag means that this expression
1549 -- should not be taken into account (needed for in place initialization
1550 -- with aggregates).
1552 -- No_Truncation (Flag17-Sem)
1553 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
1554 -- only if the RM_Size of the source is greater than the RM_Size of the
1555 -- target for scalar operands. Normally in such a case we truncate some
1556 -- higher order bits of the source, and then sign/zero extend the result
1557 -- to form the output value. But if this flag is set, then we do not do
1558 -- any truncation, so for example, if an 8 bit input is converted to 5
1559 -- bit result which is in fact stored in 8 bits, then the high order
1560 -- three bits of the target result will be copied from the source. This
1561 -- is used for properly setting out of range values for use by pragmas
1562 -- Initialize_Scalars and Normalize_Scalars.
1564 -- Original_Discriminant (Node2-Sem)
1565 -- Present in identifiers. Used in references to discriminants that
1566 -- appear in generic units. Because the names of the discriminants may be
1567 -- different in an instance, we use this field to recover the position of
1568 -- the discriminant in the original type, and replace it with the
1569 -- discriminant at the same position in the instantiated type.
1571 -- Original_Entity (Node2-Sem)
1572 -- Present in numeric literals. Used to denote the named number that has
1573 -- been constant-folded into the given literal. If literal is from
1574 -- source, or the result of some other constant-folding operation, then
1575 -- Original_Entity is empty. This field is needed to handle properly
1576 -- named numbers in generic units, where the Associated_Node field
1577 -- interferes with the Entity field, making it impossible to preserve the
1578 -- original entity at the point of instantiation (ASIS problem).
1580 -- Others_Discrete_Choices (List1-Sem)
1581 -- When a case statement or variant is analyzed, the semantic checks
1582 -- determine the actual list of choices that correspond to an others
1583 -- choice. This list is materialized for later use by the expander and
1584 -- the Others_Discrete_Choices field of an N_Others_Choice node points to
1585 -- this materialized list of choices, which is in standard format for a
1586 -- list of discrete choices, except that of course it cannot contain an
1587 -- N_Others_Choice entry.
1589 -- Parameter_List_Truncated (Flag17-Sem)
1590 -- Present in N_Function_Call and N_Procedure_Call_Statement nodes. Set
1591 -- (for OpenVMS ports of GNAT only) if the parameter list is truncated as
1592 -- a result of a First_Optional_Parameter specification in an
1593 -- Import_Function, Import_Procedure, or Import_Valued_Procedure pragma.
1594 -- The truncation is done by the expander by removing trailing parameters
1595 -- from the argument list, in accordance with the set of rules allowing
1596 -- such parameter removal. In particular, parameters can be removed
1597 -- working from the end of the parameter list backwards up to and
1598 -- including the entry designated by First_Optional_Parameter in the
1599 -- Import pragma. Parameters can be removed if they are implicit and the
1600 -- default value is a known-at-compile-time value, including the use of
1601 -- the Null_Parameter attribute, or if explicit parameter values are
1602 -- present that match the corresponding defaults.
1604 -- Parent_Spec (Node4-Sem)
1605 -- For a library unit that is a child unit spec (package or subprogram
1606 -- declaration, generic declaration or instantiation, or library level
1607 -- rename, this field points to the compilation unit node for the parent
1608 -- package specification. This field is Empty for library bodies (the
1609 -- parent spec in this case can be found from the corresponding spec).
1611 -- Premature_Use (Node5-Sem)
1612 -- Present in N_Incomplete_Type_Declaration node. Used for improved
1613 -- error diagnostics: if there is a premature usage of an incomplete
1614 -- type, a subsequently generated error message indicates the position
1615 -- of its full declaration.
1617 -- Present_Expr (Uint3-Sem)
1618 -- Present in an N_Variant node. This has a meaningful value only after
1619 -- Gigi has back annotated the tree with representation information. At
1620 -- this point, it contains a reference to a gcc expression that depends
1621 -- on the values of one or more discriminants. Give a set of discriminant
1622 -- values, this expression evaluates to False (zero) if variant is not
1623 -- present, and True (non-zero) if it is present. See unit Repinfo for
1624 -- further details on gigi back annotation. This field is used during
1625 -- ASIS processing (data decomposition annex) to determine if a field is
1628 -- Print_In_Hex (Flag13-Sem)
1629 -- Set on an N_Integer_Literal node to indicate that the value should be
1630 -- printed in hexadecimal in the sprint listing. Has no effect on
1631 -- legality or semantics of program, only on the displayed output. This
1632 -- is used to clarify output from the packed array cases.
1634 -- Procedure_To_Call (Node2-Sem)
1635 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
1636 -- and N_Extended_Return_Statement nodes. References the entity for the
1637 -- declaration of the procedure to be called to accomplish the required
1638 -- operation (i.e. for the Allocate procedure in the case of N_Allocator
1639 -- and N_Simple_Return_Statement and N_Extended_Return_Statement (for
1640 -- allocating the return value), and for the Deallocate procedure in the
1641 -- case of N_Free_Statement.
1643 -- Raises_Constraint_Error (Flag7-Sem)
1644 -- Set on an expression whose evaluation will definitely fail constraint
1645 -- error check. In the case of static expressions, this flag must be set
1646 -- accurately (and if it is set, the expression is typically illegal
1647 -- unless it appears as a non-elaborated branch of a short-circuit form).
1648 -- For a non-static expression, this flag may be set whenever an
1649 -- expression (e.g. an aggregate) is known to raise constraint error. If
1650 -- set, the expression definitely will raise CE if elaborated at runtime.
1651 -- If not set, the expression may or may not raise CE. In other words, on
1652 -- static expressions, the flag is set accurately, on non-static
1653 -- expressions it is set conservatively.
1655 -- Redundant_Use (Flag13-Sem)
1656 -- Present in nodes that can appear as an operand in a use clause or use
1657 -- type clause (identifiers, expanded names, attribute references). Set
1658 -- to indicate that a use is redundant (and therefore need not be undone
1661 -- Renaming_Exception (Node2-Sem)
1662 -- Present in N_Exception_Declaration node. Used to point back to the
1663 -- exception renaming for an exception declared within a subprogram.
1664 -- What happens is that an exception declared in a subprogram is moved
1665 -- to the library level with a unique name, and the original exception
1666 -- becomes a renaming. This link from the library level exception to the
1667 -- renaming declaration allows registering of the proper exception name.
1669 -- Return_Statement_Entity (Node5-Sem)
1670 -- Present in N_Simple_Return_Statement and N_Extended_Return_Statement.
1671 -- Points to an E_Return_Statement representing the return statement.
1673 -- Return_Object_Declarations (List3)
1674 -- Present in N_Extended_Return_Statement. Points to a list initially
1675 -- containing a single N_Object_Declaration representing the return
1676 -- object. We use a list (instead of just a pointer to the object decl)
1677 -- because Analyze wants to insert extra actions on this list.
1679 -- Rounded_Result (Flag18-Sem)
1680 -- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
1681 -- Used in the fixed-point cases to indicate that the result must be
1682 -- rounded as a result of the use of the 'Round attribute. Also used for
1683 -- integer N_Op_Divide nodes to indicate that the result should be
1684 -- rounded to the nearest integer (breaking ties away from zero), rather
1685 -- than truncated towards zero as usual. These rounded integer operations
1686 -- are the result of expansion of rounded fixed-point divide, conversion
1687 -- and multiplication operations.
1689 -- SCIL_Entity (Node4-Sem)
1690 -- Present in SCIL nodes. Used to reference the tagged type associated
1691 -- with the SCIL node.
1693 -- SCIL_Controlling_Tag (Node5-Sem)
1694 -- Present in N_SCIL_Dispatching_Call nodes. Used to reference the
1695 -- controlling tag of a dispatching call.
1697 -- SCIL_Tag_Value (Node5-Sem)
1698 -- Present in N_SCIL_Membership_Test nodes. Used to reference the tag
1699 -- value that is being tested.
1701 -- SCIL_Target_Prim (Node2-Sem)
1702 -- Present in N_SCIL_Dispatching_Call nodes. Used to reference the tagged
1703 -- type primitive associated with the SCIL node.
1705 -- Scope (Node3-Sem)
1706 -- Present in defining identifiers, defining character literals and
1707 -- defining operator symbols (i.e. in all entities). The entities of a
1708 -- scope all use this field to reference the corresponding scope entity.
1709 -- See Einfo for further details.
1711 -- Shift_Count_OK (Flag4-Sem)
1712 -- A flag present in shift nodes to indicate that the shift count is
1713 -- known to be in range, i.e. is in the range from zero to word length
1714 -- minus one. If this flag is not set, then the shift count may be
1715 -- outside this range, i.e. larger than the word length, and the code
1716 -- must ensure that such shift counts give the appropriate result.
1718 -- Source_Type (Node1-Sem)
1719 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1720 -- source type entity for the unchecked conversion instantiation
1721 -- which gigi must do size validation for.
1723 -- Split_PPC (Flag17)
1724 -- When a Pre or Post aspect specification is processed, it is broken
1725 -- into AND THEN sections. The left most section has Split_PPC set to
1726 -- False, indicating that it is the original specification (e.g. for
1727 -- posting errors). For other sections, Split_PPC is set to True.
1728 -- This flag is set in both the N_Aspect_Specification node itself,
1729 -- and in the pragma which is generated from this node.
1731 -- Static_Processing_OK (Flag4-Sem)
1732 -- Present in N_Aggregate nodes. When the Compile_Time_Known_Aggregate
1733 -- flag is set, the full value of the aggregate can be determined at
1734 -- compile time and the aggregate can be passed as is to the back-end.
1735 -- In this event it is irrelevant whether this flag is set or not.
1736 -- However, if the flag Compile_Time_Known_Aggregate is not set but
1737 -- Static_Processing_OK is set, the aggregate can (but need not) be
1738 -- converted into a compile time known aggregate by the expander. See
1739 -- Sem_Aggr for the specific conditions under which an aggregate has its
1740 -- Static_Processing_OK flag set.
1742 -- Storage_Pool (Node1-Sem)
1743 -- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
1744 -- and N_Extended_Return_Statement nodes. References the entity for the
1745 -- storage pool to be used for the allocate or free call or for the
1746 -- allocation of the returned value from function. Empty indicates that
1747 -- the global default pool is to be used. Note that in the case
1748 -- of a return statement, this field is set only if the function returns
1749 -- value of a type whose size is not known at compile time on the
1752 -- Suppress_Assignment_Checks (Flag18-Sem)
1753 -- Used in generated N_Assignment_Statement nodes to suppress predicate
1754 -- and range checks in cases where the generated code knows that the
1755 -- value being assigned is in range and satisfies any predicate. Also
1756 -- can be set in N_Object_Declaration nodes, to similarly suppress any
1757 -- checks on the initializing value.
1759 -- Suppress_Loop_Warnings (Flag17-Sem)
1760 -- Used in N_Loop_Statement node to indicate that warnings within the
1761 -- body of the loop should be suppressed. This is set when the range
1762 -- of a FOR loop is known to be null, or is probably null (loop would
1763 -- only execute if invalid values are present).
1765 -- Target_Type (Node2-Sem)
1766 -- Used in an N_Validate_Unchecked_Conversion node to point to the target
1767 -- type entity for the unchecked conversion instantiation which gigi must
1768 -- do size validation for.
1770 -- Then_Actions (List3-Sem)
1771 -- This field is present in conditional expression nodes. During code
1772 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1773 -- actions at an appropriate place in the tree to get elaborated at the
1774 -- right time. For conditional expressions, we have to be sure that the
1775 -- actions for the Then branch are only elaborated if the condition is
1776 -- True. The Then_Actions field is used as a temporary parking place for
1777 -- these actions. The final tree is always rewritten to eliminate the
1778 -- need for this field, so in the tree passed to Gigi, this field is
1779 -- always set to No_List.
1781 -- Treat_Fixed_As_Integer (Flag14-Sem)
1782 -- This flag appears in operator nodes for divide, multiply, mod and rem
1783 -- on fixed-point operands. It indicates that the operands are to be
1784 -- treated as integer values, ignoring small values. This flag is only
1785 -- set as a result of expansion of fixed-point operations. Typically a
1786 -- fixed-point multiplication in the source generates subsidiary
1787 -- multiplication and division operations that work with the underlying
1788 -- integer values and have this flag set. Note that this flag is not
1789 -- needed on other arithmetic operations (add, neg, subtract etc.) since
1790 -- in these cases it is always the case that fixed is treated as integer.
1791 -- The Etype field MUST be set if this flag is set. The analyzer knows to
1792 -- leave such nodes alone, and whoever makes them must set the correct
1795 -- TSS_Elist (Elist3-Sem)
1796 -- Present in N_Freeze_Entity nodes. Holds an element list containing
1797 -- entries for each TSS (type support subprogram) associated with the
1798 -- frozen type. The elements of the list are the entities for the
1799 -- subprograms (see package Exp_TSS for further details). Set to No_Elist
1800 -- if there are no type support subprograms for the type or if the freeze
1801 -- node is not for a type.
1803 -- Unreferenced_In_Spec (Flag7-Sem)
1804 -- Present in N_With_Clause nodes. Set if the with clause is on the
1805 -- package or subprogram spec where the main unit is the corresponding
1806 -- body, and is not referenced by the spec (it may still be referenced by
1807 -- the body, so this flag is used to generate the proper message (see
1808 -- Sem_Util.Check_Unused_Withs for details)
1810 -- Used_Operations (Elist5-Sem)
1811 -- Present in N_Use_Type_Clause nodes. Holds the list of operations that
1812 -- are made potentially use-visible by the clause. Simplifies processing
1813 -- on exit from the scope of the use_type_clause, in particular in the
1814 -- case of Use_All_Type, when those operations several scopes.
1816 -- Was_Originally_Stub (Flag13-Sem)
1817 -- This flag is set in the node for a proper body that replaces stub.
1818 -- During the analysis procedure, stubs in some situations get rewritten
1819 -- by the corresponding bodies, and we set this flag to remember that
1820 -- this happened. Note that it is not good enough to rely on the use of
1821 -- Original_Node here because of the case of nested instantiations where
1822 -- the substituted node can be copied.
1824 -- Withed_Body (Node1-Sem)
1825 -- Present in N_With_Clause nodes. Set if the unit in whose context
1826 -- the with_clause appears instantiates a generic contained in the
1827 -- library unit of the with_clause and as a result loads its body.
1828 -- Used for a more precise unit traversal for CodePeer.
1830 --------------------------------------------------
1831 -- Note on Use of End_Label and End_Span Fields --
1832 --------------------------------------------------
1834 -- Several constructs have end lines:
1836 -- Loop Statement end loop [loop_IDENTIFIER];
1837 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
1838 -- Task Definition end [task_IDENTIFIER]
1839 -- Protected Definition end [protected_IDENTIFIER]
1840 -- Protected Body end [protected_IDENTIFIER]
1842 -- Block Statement end [block_IDENTIFIER];
1843 -- Subprogram Body end [DESIGNATOR];
1844 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
1845 -- Task Body end [task_IDENTIFIER];
1846 -- Accept Statement end [entry_IDENTIFIER]];
1847 -- Entry Body end [entry_IDENTIFIER];
1849 -- If Statement end if;
1850 -- Case Statement end case;
1852 -- Record Definition end record;
1853 -- Enumeration Definition );
1855 -- The End_Label and End_Span fields are used to mark the locations of
1856 -- these lines, and also keep track of the label in the case where a label
1859 -- For the first group above, the End_Label field of the corresponding node
1860 -- is used to point to the label identifier. In the case where there is no
1861 -- label in the source, the parser supplies a dummy identifier (with
1862 -- Comes_From_Source set to False), and the Sloc of this dummy identifier
1863 -- marks the location of the token following the END token.
1865 -- For the second group, the use of End_Label is similar, but the End_Label
1866 -- is found in the N_Handled_Sequence_Of_Statements node. This is done
1867 -- simply because in some cases there is no room in the parent node.
1869 -- For the third group, there is never any label, and instead of using
1870 -- End_Label, we use the End_Span field which gives the location of the
1871 -- token following END, relative to the starting Sloc of the construct,
1872 -- i.e. add Sloc (Node) + End_Span (Node) to get the Sloc of the IF or CASE
1873 -- following the End_Label.
1875 -- The record definition case is handled specially, we treat it as though
1876 -- it required an optional label which is never present, and so the parser
1877 -- always builds a dummy identifier with Comes From Source set False. The
1878 -- reason we do this, rather than using End_Span in this case, is that we
1879 -- want to generate a cross-ref entry for the end of a record, since it
1880 -- represents a scope for name declaration purposes.
1882 -- The enumeration definition case is handled in an exactly similar manner,
1883 -- building a dummy identifier to get a cross-reference.
1885 -- Note: the reason we store the difference as a Uint, instead of storing
1886 -- the Source_Ptr value directly, is that Source_Ptr values cannot be
1887 -- distinguished from other types of values, and we count on all general
1888 -- use fields being self describing. To make things easier for clients,
1889 -- note that we provide function End_Location, and procedure
1890 -- Set_End_Location to allow access to the logical value (which is the
1891 -- Source_Ptr value for the end token).
1893 ---------------------
1894 -- Syntactic Nodes --
1895 ---------------------
1897 ---------------------
1898 -- 2.3 Identifier --
1899 ---------------------
1901 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
1902 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
1904 -- An IDENTIFIER shall not be a reserved word
1906 -- In the Ada grammar identifiers are the bottom level tokens which have
1907 -- very few semantics. Actual program identifiers are direct names. If
1908 -- we were being 100% honest with the grammar, then we would have a node
1909 -- called N_Direct_Name which would point to an identifier. However,
1910 -- that's too many extra nodes, so we just use the N_Identifier node
1911 -- directly as a direct name, and it contains the expression fields and
1912 -- Entity field that correspond to its use as a direct name. In those
1913 -- few cases where identifiers appear in contexts where they are not
1914 -- direct names (pragmas, pragma argument associations, attribute
1915 -- references and attribute definition clauses), the Chars field of the
1916 -- node contains the Name_Id for the identifier name.
1918 -- Note: in GNAT, a reserved word can be treated as an identifier in two
1919 -- cases. First, an incorrect use of a reserved word as an identifier is
1920 -- diagnosed and then treated as a normal identifier. Second, an
1921 -- attribute designator of the form of a reserved word (access, delta,
1922 -- digits, range) is treated as an identifier.
1924 -- Note: The set of letters that is permitted in an identifier depends
1925 -- on the character set in use. See package Csets for full details.
1928 -- Sloc points to identifier
1929 -- Chars (Name1) contains the Name_Id for the identifier
1930 -- Entity (Node4-Sem)
1931 -- Associated_Node (Node4-Sem)
1932 -- Original_Discriminant (Node2-Sem)
1933 -- Redundant_Use (Flag13-Sem)
1934 -- Atomic_Sync_Required (Flag14-Sem)
1935 -- Has_Private_View (Flag11-Sem) (set in generic units)
1936 -- plus fields for expression
1938 --------------------------
1939 -- 2.4 Numeric Literal --
1940 --------------------------
1942 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
1944 ----------------------------
1945 -- 2.4.1 Decimal Literal --
1946 ----------------------------
1948 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
1950 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
1952 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
1954 -- Decimal literals appear in the tree as either integer literal nodes
1955 -- or real literal nodes, depending on whether a period is present.
1957 -- Note: literal nodes appear as a result of direct use of literals
1958 -- in the source program, and also as the result of evaluating
1959 -- expressions at compile time. In the latter case, it is possible
1960 -- to construct real literals that have no syntactic representation
1961 -- using the standard literal format. Such literals are listed by
1962 -- Sprint using the notation [numerator / denominator].
1964 -- Note: the value of an integer literal node created by the front end
1965 -- is never outside the range of values of the base type. However, it
1966 -- can be the case that the created value is outside the range of the
1967 -- particular subtype. This happens in the case of integer overflows
1968 -- with checks suppressed.
1970 -- N_Integer_Literal
1971 -- Sloc points to literal
1972 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1973 -- has been constant-folded into its literal value.
1974 -- Intval (Uint3) contains integer value of literal
1975 -- plus fields for expression
1976 -- Print_In_Hex (Flag13-Sem)
1979 -- Sloc points to literal
1980 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1981 -- has been constant-folded into its literal value.
1982 -- Realval (Ureal3) contains real value of literal
1983 -- Corresponding_Integer_Value (Uint4-Sem)
1984 -- Is_Machine_Number (Flag11-Sem)
1985 -- plus fields for expression
1987 --------------------------
1988 -- 2.4.2 Based Literal --
1989 --------------------------
1991 -- BASED_LITERAL ::=
1992 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
1996 -- BASED_NUMERAL ::=
1997 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
1999 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
2001 -- Based literals appear in the tree as either integer literal nodes
2002 -- or real literal nodes, depending on whether a period is present.
2004 ----------------------------
2005 -- 2.5 Character Literal --
2006 ----------------------------
2008 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
2010 -- N_Character_Literal
2011 -- Sloc points to literal
2012 -- Chars (Name1) contains the Name_Id for the identifier
2013 -- Char_Literal_Value (Uint2) contains the literal value
2014 -- Entity (Node4-Sem)
2015 -- Associated_Node (Node4-Sem)
2016 -- Has_Private_View (Flag11-Sem) set in generic units.
2017 -- plus fields for expression
2019 -- Note: the Entity field will be missing (set to Empty) for character
2020 -- literals whose type is Standard.Wide_Character or Standard.Character
2021 -- or a type derived from one of these two. In this case the character
2022 -- literal stands for its own coding. The reason we take this irregular
2023 -- short cut is to avoid the need to build lots of junk defining
2024 -- character literal nodes.
2026 -------------------------
2027 -- 2.6 String Literal --
2028 -------------------------
2030 -- STRING LITERAL ::= "{STRING_ELEMENT}"
2032 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
2033 -- single GRAPHIC_CHARACTER other than a quotation mark.
2035 -- Is_Folded_In_Parser is True if the parser created this literal by
2036 -- folding a sequence of "&" operators. For example, if the source code
2037 -- says "aaa" & "bbb" & "ccc", and this produces "aaabbbccc", the flag
2038 -- is set. This flag is needed because the parser doesn't know about
2039 -- visibility, so the folded result might be wrong, and semantic
2040 -- analysis needs to check for that.
2043 -- Sloc points to literal
2044 -- Strval (Str3) contains Id of string value
2045 -- Has_Wide_Character (Flag11-Sem)
2046 -- Has_Wide_Wide_Character (Flag13-Sem)
2047 -- Is_Folded_In_Parser (Flag4)
2048 -- plus fields for expression
2054 -- A COMMENT starts with two adjacent hyphens and extends up to the
2055 -- end of the line. A COMMENT may appear on any line of a program.
2057 -- Comments are skipped by the scanner and do not appear in the tree.
2058 -- It is possible to reconstruct the position of comments with respect
2059 -- to the elements of the tree by using the source position (Sloc)
2060 -- pointers that appear in every tree node.
2066 -- PRAGMA ::= pragma IDENTIFIER
2067 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
2069 -- Note that a pragma may appear in the tree anywhere a declaration
2070 -- or a statement may appear, as well as in some other situations
2071 -- which are explicitly documented.
2074 -- Sloc points to PRAGMA
2075 -- Next_Pragma (Node1-Sem)
2076 -- Pragma_Argument_Associations (List2) (set to No_List if none)
2077 -- Corresponding_Aspect (Node3-Sem) (set to Empty if not present)
2078 -- Pragma_Identifier (Node4)
2079 -- Next_Rep_Item (Node5-Sem)
2080 -- From_Aspect_Specification (Flag13-Sem)
2081 -- Is_Delayed_Aspect (Flag14-Sem)
2082 -- Import_Interface_Present (Flag16-Sem)
2083 -- Split_PPC (Flag17) set if corresponding aspect had Split_PPC set
2084 -- Class_Present (Flag6) set if from Aspect with 'Class
2086 -- Note: we should have a section on what pragmas are passed on to
2087 -- the back end to be processed. This section should note that pragma
2088 -- Psect_Object is always converted to Common_Object, but there are
2089 -- undoubtedly many other similar notes required ???
2091 -- Note: a utility function Pragma_Name may be applied to pragma nodes
2092 -- to conveniently obtain the Chars field of the Pragma_Identifier.
2094 -- Note: if From_Aspect_Specification is set, then Sloc points to the
2095 -- aspect name, as does the Pragma_Identifier. In this case if the
2096 -- pragma has a local name argument (such as pragma Inline), it is
2097 -- resolved to point to the specific entity affected by the pragma.
2099 --------------------------------------
2100 -- 2.8 Pragma Argument Association --
2101 --------------------------------------
2103 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
2104 -- [pragma_argument_IDENTIFIER =>] NAME
2105 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
2107 -- N_Pragma_Argument_Association
2108 -- Sloc points to first token in association
2109 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
2110 -- Expression (Node3)
2112 ------------------------
2113 -- 2.9 Reserved Word --
2114 ------------------------
2116 -- Reserved words are parsed by the scanner, and returned as the
2117 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
2119 ----------------------------
2120 -- 3.1 Basic Declaration --
2121 ----------------------------
2123 -- BASIC_DECLARATION ::=
2124 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
2125 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
2126 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
2127 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
2128 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
2129 -- | GENERIC_INSTANTIATION
2131 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
2132 -- see further description in section on semantic nodes.
2134 -- Also, in the tree that is constructed, a pragma may appear
2135 -- anywhere that a declaration may appear.
2137 ------------------------------
2138 -- 3.1 Defining Identifier --
2139 ------------------------------
2141 -- DEFINING_IDENTIFIER ::= IDENTIFIER
2143 -- A defining identifier is an entity, which has additional fields
2144 -- depending on the setting of the Ekind field. These additional
2145 -- fields are defined (and access subprograms declared) in package
2148 -- Note: N_Defining_Identifier is an extended node whose fields are
2149 -- deliberate layed out to match the layout of fields in an ordinary
2150 -- N_Identifier node allowing for easy alteration of an identifier
2151 -- node into a defining identifier node. For details, see procedure
2152 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
2154 -- N_Defining_Identifier
2155 -- Sloc points to identifier
2156 -- Chars (Name1) contains the Name_Id for the identifier
2157 -- Next_Entity (Node2-Sem)
2158 -- Scope (Node3-Sem)
2159 -- Etype (Node5-Sem)
2161 -----------------------------
2162 -- 3.2.1 Type Declaration --
2163 -----------------------------
2165 -- TYPE_DECLARATION ::=
2166 -- FULL_TYPE_DECLARATION
2167 -- | INCOMPLETE_TYPE_DECLARATION
2168 -- | PRIVATE_TYPE_DECLARATION
2169 -- | PRIVATE_EXTENSION_DECLARATION
2171 ----------------------------------
2172 -- 3.2.1 Full Type Declaration --
2173 ----------------------------------
2175 -- FULL_TYPE_DECLARATION ::=
2176 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
2177 -- is TYPE_DEFINITION
2178 -- [ASPECT_SPECIFICATIONS];
2179 -- | TASK_TYPE_DECLARATION
2180 -- | PROTECTED_TYPE_DECLARATION
2182 -- The full type declaration node is used only for the first case. The
2183 -- second case (concurrent type declaration), is represented directly
2184 -- by a task type declaration or a protected type declaration.
2186 -- N_Full_Type_Declaration
2187 -- Sloc points to TYPE
2188 -- Defining_Identifier (Node1)
2189 -- Discriminant_Specifications (List4) (set to No_List if none)
2190 -- Type_Definition (Node3)
2191 -- Discr_Check_Funcs_Built (Flag11-Sem)
2193 ----------------------------
2194 -- 3.2.1 Type Definition --
2195 ----------------------------
2197 -- TYPE_DEFINITION ::=
2198 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
2199 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
2200 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
2201 -- | DERIVED_TYPE_DEFINITION | INTERFACE_TYPE_DEFINITION
2203 --------------------------------
2204 -- 3.2.2 Subtype Declaration --
2205 --------------------------------
2207 -- SUBTYPE_DECLARATION ::=
2208 -- subtype DEFINING_IDENTIFIER is [NULL_EXCLUSION] SUBTYPE_INDICATION
2209 -- [ASPECT_SPECIFICATIONS];
2211 -- The subtype indication field is set to Empty for subtypes
2212 -- declared in package Standard (Positive, Natural).
2214 -- N_Subtype_Declaration
2215 -- Sloc points to SUBTYPE
2216 -- Defining_Identifier (Node1)
2217 -- Null_Exclusion_Present (Flag11)
2218 -- Subtype_Indication (Node5)
2219 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
2220 -- Exception_Junk (Flag8-Sem)
2221 -- Has_Dynamic_Range_Check (Flag12-Sem)
2223 -------------------------------
2224 -- 3.2.2 Subtype Indication --
2225 -------------------------------
2227 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
2229 -- Note: if no constraint is present, the subtype indication appears
2230 -- directly in the tree as a subtype mark. The N_Subtype_Indication
2231 -- node is used only if a constraint is present.
2233 -- Note: [For Ada 2005 (AI-231)]: Because Ada 2005 extends this rule
2234 -- with the null-exclusion part (see AI-231), we had to introduce a new
2235 -- attribute in all the parents of subtype_indication nodes to indicate
2236 -- if the null-exclusion is present.
2238 -- Note: the reason that this node has expression fields is that a
2239 -- subtype indication can appear as an operand of a membership test.
2241 -- N_Subtype_Indication
2242 -- Sloc points to first token of subtype mark
2243 -- Subtype_Mark (Node4)
2244 -- Constraint (Node3)
2245 -- Etype (Node5-Sem)
2246 -- Must_Not_Freeze (Flag8-Sem)
2248 -- Note: Etype is a copy of the Etype field of the Subtype_Mark. The
2249 -- reason for this redundancy is so that in a list of array index types,
2250 -- the Etype can be uniformly accessed to determine the subscript type.
2251 -- This means that no Itype is constructed for the actual subtype that
2252 -- is created by the subtype indication. If such an Itype is required,
2253 -- it is constructed in the context in which the indication appears.
2255 -------------------------
2256 -- 3.2.2 Subtype Mark --
2257 -------------------------
2259 -- SUBTYPE_MARK ::= subtype_NAME
2261 -----------------------
2262 -- 3.2.2 Constraint --
2263 -----------------------
2265 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
2267 ------------------------------
2268 -- 3.2.2 Scalar Constraint --
2269 ------------------------------
2271 -- SCALAR_CONSTRAINT ::=
2272 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
2274 ---------------------------------
2275 -- 3.2.2 Composite Constraint --
2276 ---------------------------------
2278 -- COMPOSITE_CONSTRAINT ::=
2279 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
2281 -------------------------------
2282 -- 3.3.1 Object Declaration --
2283 -------------------------------
2285 -- OBJECT_DECLARATION ::=
2286 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2287 -- [NULL_EXCLUSION] SUBTYPE_INDICATION [:= EXPRESSION]
2288 -- [ASPECT_SPECIFICATIONS];
2289 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2290 -- ACCESS_DEFINITION [:= EXPRESSION]
2291 -- [ASPECT_SPECIFICATIONS];
2292 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
2293 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION]
2294 -- [ASPECT_SPECIFICATIONS];
2295 -- | SINGLE_TASK_DECLARATION
2296 -- | SINGLE_PROTECTED_DECLARATION
2298 -- Note: aliased is not permitted in Ada 83 mode
2300 -- The N_Object_Declaration node is only for the first two cases.
2301 -- Single task declaration is handled by P_Task (9.1)
2302 -- Single protected declaration is handled by P_protected (9.5)
2304 -- Although the syntax allows multiple identifiers in the list, the
2305 -- semantics is as though successive declarations were given with
2306 -- identical type definition and expression components. To simplify
2307 -- semantic processing, the parser represents a multiple declaration
2308 -- case as a sequence of single declarations, using the More_Ids and
2309 -- Prev_Ids flags to preserve the original source form as described
2310 -- in the section on "Handling of Defining Identifier Lists".
2312 -- The flag Has_Init_Expression is set if an initializing expression
2313 -- is present. Normally it is set if and only if Expression contains
2314 -- a non-empty value, but there is an exception to this. When the
2315 -- initializing expression is an aggregate which requires explicit
2316 -- assignments, the Expression field gets set to Empty, but this flag
2317 -- is still set, so we don't forget we had an initializing expression.
2319 -- Note: if a range check is required for the initialization
2320 -- expression then the Do_Range_Check flag is set in the Expression,
2321 -- with the check being done against the type given by the object
2322 -- definition, which is also the Etype of the defining identifier.
2324 -- Note: the contents of the Expression field must be ignored (i.e.
2325 -- treated as though it were Empty) if No_Initialization is set True.
2327 -- Note: the back end places some restrictions on the form of the
2328 -- Expression field. If the object being declared is Atomic, then
2329 -- the Expression may not have the form of an aggregate (since this
2330 -- might cause the back end to generate separate assignments). In this
2331 -- case the front end must generate an extra temporary and initialize
2332 -- this temporary as required (the temporary itself is not atomic).
2334 -- Note: there is not node kind for object definition. Instead, the
2335 -- corresponding field holds a subtype indication, an array type
2336 -- definition, or (Ada 2005, AI-406) an access definition.
2338 -- N_Object_Declaration
2339 -- Sloc points to first identifier
2340 -- Defining_Identifier (Node1)
2341 -- Aliased_Present (Flag4)
2342 -- Constant_Present (Flag17) set if CONSTANT appears
2343 -- Null_Exclusion_Present (Flag11)
2344 -- Object_Definition (Node4) subtype indic./array type def./access def.
2345 -- Expression (Node3) (set to Empty if not present)
2346 -- Handler_List_Entry (Node2-Sem)
2347 -- Corresponding_Generic_Association (Node5-Sem)
2348 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2349 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2350 -- No_Initialization (Flag13-Sem)
2351 -- Assignment_OK (Flag15-Sem)
2352 -- Exception_Junk (Flag8-Sem)
2353 -- Is_Subprogram_Descriptor (Flag16-Sem)
2354 -- Has_Init_Expression (Flag14)
2355 -- Suppress_Assignment_Checks (Flag18-Sem)
2357 -------------------------------------
2358 -- 3.3.1 Defining Identifier List --
2359 -------------------------------------
2361 -- DEFINING_IDENTIFIER_LIST ::=
2362 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
2364 -------------------------------
2365 -- 3.3.2 Number Declaration --
2366 -------------------------------
2368 -- NUMBER_DECLARATION ::=
2369 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
2371 -- Although the syntax allows multiple identifiers in the list, the
2372 -- semantics is as though successive declarations were given with
2373 -- identical expressions. To simplify semantic processing, the parser
2374 -- represents a multiple declaration case as a sequence of single
2375 -- declarations, using the More_Ids and Prev_Ids flags to preserve
2376 -- the original source form as described in the section on "Handling
2377 -- of Defining Identifier Lists".
2379 -- N_Number_Declaration
2380 -- Sloc points to first identifier
2381 -- Defining_Identifier (Node1)
2382 -- Expression (Node3)
2383 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2384 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2386 ----------------------------------
2387 -- 3.4 Derived Type Definition --
2388 ----------------------------------
2390 -- DERIVED_TYPE_DEFINITION ::=
2391 -- [abstract] [limited] new [NULL_EXCLUSION] parent_SUBTYPE_INDICATION
2392 -- [[and INTERFACE_LIST] RECORD_EXTENSION_PART]
2394 -- Note: ABSTRACT, LIMITED and record extension part are not permitted
2397 -- Note: a record extension part is required if ABSTRACT is present
2399 -- N_Derived_Type_Definition
2400 -- Sloc points to NEW
2401 -- Abstract_Present (Flag4)
2402 -- Null_Exclusion_Present (Flag11) (set to False if not present)
2403 -- Subtype_Indication (Node5)
2404 -- Record_Extension_Part (Node3) (set to Empty if not present)
2405 -- Limited_Present (Flag17)
2406 -- Task_Present (Flag5) set in task interfaces
2407 -- Protected_Present (Flag6) set in protected interfaces
2408 -- Synchronized_Present (Flag7) set in interfaces
2409 -- Interface_List (List2) (set to No_List if none)
2410 -- Interface_Present (Flag16) set in abstract interfaces
2412 -- Note: Task_Present, Protected_Present, Synchronized_Present,
2413 -- Interface_List, and Interface_Present are used for abstract
2414 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2416 ---------------------------
2417 -- 3.5 Range Constraint --
2418 ---------------------------
2420 -- RANGE_CONSTRAINT ::= range RANGE
2422 -- N_Range_Constraint
2423 -- Sloc points to RANGE
2424 -- Range_Expression (Node4)
2431 -- RANGE_ATTRIBUTE_REFERENCE
2432 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
2434 -- Note: the case of a range given as a range attribute reference
2435 -- appears directly in the tree as an attribute reference.
2437 -- Note: the field name for a reference to a range is Range_Expression
2438 -- rather than Range, because range is a reserved keyword in Ada!
2440 -- Note: the reason that this node has expression fields is that a
2441 -- range can appear as an operand of a membership test. The Etype
2442 -- field is the type of the range (we do NOT construct an implicit
2443 -- subtype to represent the range exactly).
2446 -- Sloc points to ..
2447 -- Low_Bound (Node1)
2448 -- High_Bound (Node2)
2449 -- Includes_Infinities (Flag11)
2450 -- plus fields for expression
2452 -- Note: if the range appears in a context, such as a subtype
2453 -- declaration, where range checks are required on one or both of
2454 -- the expression fields, then type conversion nodes are inserted
2455 -- to represent the required checks.
2457 ----------------------------------------
2458 -- 3.5.1 Enumeration Type Definition --
2459 ----------------------------------------
2461 -- ENUMERATION_TYPE_DEFINITION ::=
2462 -- (ENUMERATION_LITERAL_SPECIFICATION
2463 -- {, ENUMERATION_LITERAL_SPECIFICATION})
2465 -- Note: the Literals field in the node described below is null for
2466 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
2467 -- which special processing handles these types as special cases.
2469 -- N_Enumeration_Type_Definition
2470 -- Sloc points to left parenthesis
2471 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
2472 -- End_Label (Node4) (set to Empty if internally generated record)
2474 ----------------------------------------------
2475 -- 3.5.1 Enumeration Literal Specification --
2476 ----------------------------------------------
2478 -- ENUMERATION_LITERAL_SPECIFICATION ::=
2479 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
2481 ---------------------------------------
2482 -- 3.5.1 Defining Character Literal --
2483 ---------------------------------------
2485 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
2487 -- A defining character literal is an entity, which has additional
2488 -- fields depending on the setting of the Ekind field. These
2489 -- additional fields are defined (and access subprograms declared)
2490 -- in package Einfo.
2492 -- Note: N_Defining_Character_Literal is an extended node whose fields
2493 -- are deliberate layed out to match the layout of fields in an ordinary
2494 -- N_Character_Literal node allowing for easy alteration of a character
2495 -- literal node into a defining character literal node. For details, see
2496 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
2498 -- N_Defining_Character_Literal
2499 -- Sloc points to literal
2500 -- Chars (Name1) contains the Name_Id for the identifier
2501 -- Next_Entity (Node2-Sem)
2502 -- Scope (Node3-Sem)
2503 -- Etype (Node5-Sem)
2505 ------------------------------------
2506 -- 3.5.4 Integer Type Definition --
2507 ------------------------------------
2509 -- Note: there is an error in this rule in the latest version of the
2510 -- grammar, so we have retained the old rule pending clarification.
2512 -- INTEGER_TYPE_DEFINITION ::=
2513 -- SIGNED_INTEGER_TYPE_DEFINITION
2514 -- | MODULAR_TYPE_DEFINITION
2516 -------------------------------------------
2517 -- 3.5.4 Signed Integer Type Definition --
2518 -------------------------------------------
2520 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
2521 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2523 -- Note: the Low_Bound and High_Bound fields are set to Empty
2524 -- for integer types defined in package Standard.
2526 -- N_Signed_Integer_Type_Definition
2527 -- Sloc points to RANGE
2528 -- Low_Bound (Node1)
2529 -- High_Bound (Node2)
2531 ------------------------------------
2532 -- 3.5.4 Modular Type Definition --
2533 ------------------------------------
2535 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
2537 -- N_Modular_Type_Definition
2538 -- Sloc points to MOD
2539 -- Expression (Node3)
2541 ---------------------------------
2542 -- 3.5.6 Real Type Definition --
2543 ---------------------------------
2545 -- REAL_TYPE_DEFINITION ::=
2546 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
2548 --------------------------------------
2549 -- 3.5.7 Floating Point Definition --
2550 --------------------------------------
2552 -- FLOATING_POINT_DEFINITION ::=
2553 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
2555 -- Note: The Digits_Expression and Real_Range_Specifications fields
2556 -- are set to Empty for floating-point types declared in Standard.
2558 -- N_Floating_Point_Definition
2559 -- Sloc points to DIGITS
2560 -- Digits_Expression (Node2)
2561 -- Real_Range_Specification (Node4) (set to Empty if not present)
2563 -------------------------------------
2564 -- 3.5.7 Real Range Specification --
2565 -------------------------------------
2567 -- REAL_RANGE_SPECIFICATION ::=
2568 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2570 -- N_Real_Range_Specification
2571 -- Sloc points to RANGE
2572 -- Low_Bound (Node1)
2573 -- High_Bound (Node2)
2575 -----------------------------------
2576 -- 3.5.9 Fixed Point Definition --
2577 -----------------------------------
2579 -- FIXED_POINT_DEFINITION ::=
2580 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
2582 --------------------------------------------
2583 -- 3.5.9 Ordinary Fixed Point Definition --
2584 --------------------------------------------
2586 -- ORDINARY_FIXED_POINT_DEFINITION ::=
2587 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
2589 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2591 -- N_Ordinary_Fixed_Point_Definition
2592 -- Sloc points to DELTA
2593 -- Delta_Expression (Node3)
2594 -- Real_Range_Specification (Node4)
2596 -------------------------------------------
2597 -- 3.5.9 Decimal Fixed Point Definition --
2598 -------------------------------------------
2600 -- DECIMAL_FIXED_POINT_DEFINITION ::=
2601 -- delta static_EXPRESSION
2602 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
2604 -- Note: decimal types are not permitted in Ada 83 mode
2606 -- N_Decimal_Fixed_Point_Definition
2607 -- Sloc points to DELTA
2608 -- Delta_Expression (Node3)
2609 -- Digits_Expression (Node2)
2610 -- Real_Range_Specification (Node4) (set to Empty if not present)
2612 ------------------------------
2613 -- 3.5.9 Digits Constraint --
2614 ------------------------------
2616 -- DIGITS_CONSTRAINT ::=
2617 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
2619 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2620 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
2622 -- N_Digits_Constraint
2623 -- Sloc points to DIGITS
2624 -- Digits_Expression (Node2)
2625 -- Range_Constraint (Node4) (set to Empty if not present)
2627 --------------------------------
2628 -- 3.6 Array Type Definition --
2629 --------------------------------
2631 -- ARRAY_TYPE_DEFINITION ::=
2632 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
2634 -----------------------------------------
2635 -- 3.6 Unconstrained Array Definition --
2636 -----------------------------------------
2638 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
2639 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
2640 -- COMPONENT_DEFINITION
2642 -- Note: dimensionality of array is indicated by number of entries in
2643 -- the Subtype_Marks list, which has one entry for each dimension.
2645 -- N_Unconstrained_Array_Definition
2646 -- Sloc points to ARRAY
2647 -- Subtype_Marks (List2)
2648 -- Component_Definition (Node4)
2650 -----------------------------------
2651 -- 3.6 Index Subtype Definition --
2652 -----------------------------------
2654 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
2656 -- There is no explicit node in the tree for an index subtype
2657 -- definition since the N_Unconstrained_Array_Definition node
2658 -- incorporates the type marks which appear in this context.
2660 ---------------------------------------
2661 -- 3.6 Constrained Array Definition --
2662 ---------------------------------------
2664 -- CONSTRAINED_ARRAY_DEFINITION ::=
2665 -- array (DISCRETE_SUBTYPE_DEFINITION
2666 -- {, DISCRETE_SUBTYPE_DEFINITION})
2667 -- of COMPONENT_DEFINITION
2669 -- Note: dimensionality of array is indicated by number of entries
2670 -- in the Discrete_Subtype_Definitions list, which has one entry
2671 -- for each dimension.
2673 -- N_Constrained_Array_Definition
2674 -- Sloc points to ARRAY
2675 -- Discrete_Subtype_Definitions (List2)
2676 -- Component_Definition (Node4)
2678 --------------------------------------
2679 -- 3.6 Discrete Subtype Definition --
2680 --------------------------------------
2682 -- DISCRETE_SUBTYPE_DEFINITION ::=
2683 -- discrete_SUBTYPE_INDICATION | RANGE
2685 -------------------------------
2686 -- 3.6 Component Definition --
2687 -------------------------------
2689 -- COMPONENT_DEFINITION ::=
2690 -- [aliased] [NULL_EXCLUSION] SUBTYPE_INDICATION | ACCESS_DEFINITION
2692 -- Note: although the syntax does not permit a component definition to
2693 -- be an anonymous array (and the parser will diagnose such an attempt
2694 -- with an appropriate message), it is possible for anonymous arrays
2695 -- to appear as component definitions. The semantics and back end handle
2696 -- this case properly, and the expander in fact generates such cases.
2697 -- Access_Definition is an optional field that gives support to
2698 -- Ada 2005 (AI-230). The parser generates nodes that have either the
2699 -- Subtype_Indication field or else the Access_Definition field.
2701 -- N_Component_Definition
2702 -- Sloc points to ALIASED, ACCESS or to first token of subtype mark
2703 -- Aliased_Present (Flag4)
2704 -- Null_Exclusion_Present (Flag11)
2705 -- Subtype_Indication (Node5) (set to Empty if not present)
2706 -- Access_Definition (Node3) (set to Empty if not present)
2708 -----------------------------
2709 -- 3.6.1 Index Constraint --
2710 -----------------------------
2712 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
2714 -- It is not in general possible to distinguish between discriminant
2715 -- constraints and index constraints at parse time, since a simple
2716 -- name could be either the subtype mark of a discrete range, or an
2717 -- expression in a discriminant association with no name. Either
2718 -- entry appears simply as the name, and the semantic parse must
2719 -- distinguish between the two cases. Thus we use a common tree
2720 -- node format for both of these constraint types.
2722 -- See Discriminant_Constraint for format of node
2724 ---------------------------
2725 -- 3.6.1 Discrete Range --
2726 ---------------------------
2728 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
2730 ----------------------------
2731 -- 3.7 Discriminant Part --
2732 ----------------------------
2734 -- DISCRIMINANT_PART ::=
2735 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
2737 ------------------------------------
2738 -- 3.7 Unknown Discriminant Part --
2739 ------------------------------------
2741 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
2743 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
2745 -- There is no explicit node in the tree for an unknown discriminant
2746 -- part. Instead the Unknown_Discriminants_Present flag is set in the
2749 ----------------------------------
2750 -- 3.7 Known Discriminant Part --
2751 ----------------------------------
2753 -- KNOWN_DISCRIMINANT_PART ::=
2754 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
2756 -------------------------------------
2757 -- 3.7 Discriminant Specification --
2758 -------------------------------------
2760 -- DISCRIMINANT_SPECIFICATION ::=
2761 -- DEFINING_IDENTIFIER_LIST : [NULL_EXCLUSION] SUBTYPE_MARK
2762 -- [:= DEFAULT_EXPRESSION]
2763 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
2764 -- [:= DEFAULT_EXPRESSION]
2766 -- Although the syntax allows multiple identifiers in the list, the
2767 -- semantics is as though successive specifications were given with
2768 -- identical type definition and expression components. To simplify
2769 -- semantic processing, the parser represents a multiple declaration
2770 -- case as a sequence of single specifications, using the More_Ids and
2771 -- Prev_Ids flags to preserve the original source form as described
2772 -- in the section on "Handling of Defining Identifier Lists".
2774 -- N_Discriminant_Specification
2775 -- Sloc points to first identifier
2776 -- Defining_Identifier (Node1)
2777 -- Null_Exclusion_Present (Flag11)
2778 -- Discriminant_Type (Node5) subtype mark or access parameter definition
2779 -- Expression (Node3) (set to Empty if no default expression)
2780 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2781 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2783 -----------------------------
2784 -- 3.7 Default Expression --
2785 -----------------------------
2787 -- DEFAULT_EXPRESSION ::= EXPRESSION
2789 ------------------------------------
2790 -- 3.7.1 Discriminant Constraint --
2791 ------------------------------------
2793 -- DISCRIMINANT_CONSTRAINT ::=
2794 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
2796 -- It is not in general possible to distinguish between discriminant
2797 -- constraints and index constraints at parse time, since a simple
2798 -- name could be either the subtype mark of a discrete range, or an
2799 -- expression in a discriminant association with no name. Either
2800 -- entry appears simply as the name, and the semantic parse must
2801 -- distinguish between the two cases. Thus we use a common tree
2802 -- node format for both of these constraint types.
2804 -- N_Index_Or_Discriminant_Constraint
2805 -- Sloc points to left paren
2806 -- Constraints (List1) points to list of discrete ranges or
2807 -- discriminant associations
2809 -------------------------------------
2810 -- 3.7.1 Discriminant Association --
2811 -------------------------------------
2813 -- DISCRIMINANT_ASSOCIATION ::=
2814 -- [discriminant_SELECTOR_NAME
2815 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
2817 -- Note: a discriminant association that has no selector name list
2818 -- appears directly as an expression in the tree.
2820 -- N_Discriminant_Association
2821 -- Sloc points to first token of discriminant association
2822 -- Selector_Names (List1) (always non-empty, since if no selector
2823 -- names are present, this node is not used, see comment above)
2824 -- Expression (Node3)
2826 ---------------------------------
2827 -- 3.8 Record Type Definition --
2828 ---------------------------------
2830 -- RECORD_TYPE_DEFINITION ::=
2831 -- [[abstract] tagged] [limited] RECORD_DEFINITION
2833 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
2835 -- There is no explicit node in the tree for a record type definition.
2836 -- Instead the flags for Tagged_Present and Limited_Present appear in
2837 -- the N_Record_Definition node for a record definition appearing in
2838 -- the context of a record type definition.
2840 ----------------------------
2841 -- 3.8 Record Definition --
2842 ----------------------------
2844 -- RECORD_DEFINITION ::=
2850 -- Note: the Abstract_Present, Tagged_Present and Limited_Present
2851 -- flags appear only for a record definition appearing in a record
2854 -- Note: the NULL RECORD case is not permitted in Ada 83
2856 -- N_Record_Definition
2857 -- Sloc points to RECORD or NULL
2858 -- End_Label (Node4) (set to Empty if internally generated record)
2859 -- Abstract_Present (Flag4)
2860 -- Tagged_Present (Flag15)
2861 -- Limited_Present (Flag17)
2862 -- Component_List (Node1) empty in null record case
2863 -- Null_Present (Flag13) set in null record case
2864 -- Task_Present (Flag5) set in task interfaces
2865 -- Protected_Present (Flag6) set in protected interfaces
2866 -- Synchronized_Present (Flag7) set in interfaces
2867 -- Interface_Present (Flag16) set in abstract interfaces
2868 -- Interface_List (List2) (set to No_List if none)
2870 -- Note: Task_Present, Protected_Present, Synchronized _Present,
2871 -- Interface_List and Interface_Present are used for abstract
2872 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2874 -------------------------
2875 -- 3.8 Component List --
2876 -------------------------
2878 -- COMPONENT_LIST ::=
2879 -- COMPONENT_ITEM {COMPONENT_ITEM}
2880 -- | {COMPONENT_ITEM} VARIANT_PART
2884 -- Sloc points to first token of component list
2885 -- Component_Items (List3)
2886 -- Variant_Part (Node4) (set to Empty if no variant part)
2887 -- Null_Present (Flag13)
2889 -------------------------
2890 -- 3.8 Component Item --
2891 -------------------------
2893 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
2895 -- Note: A component item can also be a pragma, and in the tree
2896 -- that is obtained after semantic processing, a component item
2897 -- can be an N_Null node resulting from a non-recognized pragma.
2899 --------------------------------
2900 -- 3.8 Component Declaration --
2901 --------------------------------
2903 -- COMPONENT_DECLARATION ::=
2904 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
2905 -- [:= DEFAULT_EXPRESSION]
2906 -- [ASPECT_SPECIFICATIONS];
2908 -- Note: although the syntax does not permit a component definition to
2909 -- be an anonymous array (and the parser will diagnose such an attempt
2910 -- with an appropriate message), it is possible for anonymous arrays
2911 -- to appear as component definitions. The semantics and back end handle
2912 -- this case properly, and the expander in fact generates such cases.
2914 -- Although the syntax allows multiple identifiers in the list, the
2915 -- semantics is as though successive declarations were given with the
2916 -- same component definition and expression components. To simplify
2917 -- semantic processing, the parser represents a multiple declaration
2918 -- case as a sequence of single declarations, using the More_Ids and
2919 -- Prev_Ids flags to preserve the original source form as described
2920 -- in the section on "Handling of Defining Identifier Lists".
2922 -- N_Component_Declaration
2923 -- Sloc points to first identifier
2924 -- Defining_Identifier (Node1)
2925 -- Component_Definition (Node4)
2926 -- Expression (Node3) (set to Empty if no default expression)
2927 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2928 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2930 -------------------------
2931 -- 3.8.1 Variant Part --
2932 -------------------------
2935 -- case discriminant_DIRECT_NAME is
2940 -- Note: the variants list can contain pragmas as well as variants.
2941 -- In a properly formed program there is at least one variant.
2944 -- Sloc points to CASE
2948 --------------------
2950 --------------------
2953 -- when DISCRETE_CHOICE_LIST =>
2957 -- Sloc points to WHEN
2958 -- Discrete_Choices (List4)
2959 -- Component_List (Node1)
2960 -- Enclosing_Variant (Node2-Sem)
2961 -- Present_Expr (Uint3-Sem)
2962 -- Dcheck_Function (Node5-Sem)
2964 ---------------------------------
2965 -- 3.8.1 Discrete Choice List --
2966 ---------------------------------
2968 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
2970 ----------------------------
2971 -- 3.8.1 Discrete Choice --
2972 ----------------------------
2974 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
2976 -- Note: in Ada 83 mode, the expression must be a simple expression
2978 -- The only choice that appears explicitly is the OTHERS choice, as
2979 -- defined here. Other cases of discrete choice (expression and
2980 -- discrete range) appear directly. This production is also used
2981 -- for the OTHERS possibility of an exception choice.
2983 -- Note: in accordance with the syntax, the parser does not check that
2984 -- OTHERS appears at the end on its own in a choice list context. This
2985 -- is a semantic check.
2988 -- Sloc points to OTHERS
2989 -- Others_Discrete_Choices (List1-Sem)
2990 -- All_Others (Flag11-Sem)
2992 ----------------------------------
2993 -- 3.9.1 Record Extension Part --
2994 ----------------------------------
2996 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
2998 -- Note: record extension parts are not permitted in Ada 83 mode
3000 --------------------------------------
3001 -- 3.9.4 Interface Type Definition --
3002 --------------------------------------
3004 -- INTERFACE_TYPE_DEFINITION ::=
3005 -- [limited | task | protected | synchronized]
3006 -- interface [interface_list]
3008 -- Note: Interfaces are implemented with N_Record_Definition and
3009 -- N_Derived_Type_Definition nodes because most of the support
3010 -- for the analysis of abstract types has been reused to
3011 -- analyze abstract interfaces.
3013 ----------------------------------
3014 -- 3.10 Access Type Definition --
3015 ----------------------------------
3017 -- ACCESS_TYPE_DEFINITION ::=
3018 -- ACCESS_TO_OBJECT_DEFINITION
3019 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
3021 --------------------------
3022 -- 3.10 Null Exclusion --
3023 --------------------------
3025 -- NULL_EXCLUSION ::= not null
3027 ---------------------------------------
3028 -- 3.10 Access To Object Definition --
3029 ---------------------------------------
3031 -- ACCESS_TO_OBJECT_DEFINITION ::=
3032 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER]
3033 -- SUBTYPE_INDICATION
3035 -- N_Access_To_Object_Definition
3036 -- Sloc points to ACCESS
3037 -- All_Present (Flag15)
3038 -- Null_Exclusion_Present (Flag11)
3039 -- Subtype_Indication (Node5)
3040 -- Constant_Present (Flag17)
3042 -----------------------------------
3043 -- 3.10 General Access Modifier --
3044 -----------------------------------
3046 -- GENERAL_ACCESS_MODIFIER ::= all | constant
3048 -- Note: general access modifiers are not permitted in Ada 83 mode
3050 -- There is no explicit node in the tree for general access modifier.
3051 -- Instead the All_Present or Constant_Present flags are set in the
3054 -------------------------------------------
3055 -- 3.10 Access To Subprogram Definition --
3056 -------------------------------------------
3058 -- ACCESS_TO_SUBPROGRAM_DEFINITION
3059 -- [NULL_EXCLUSION] access [protected] procedure PARAMETER_PROFILE
3060 -- | [NULL_EXCLUSION] access [protected] function
3061 -- PARAMETER_AND_RESULT_PROFILE
3063 -- Note: access to subprograms are not permitted in Ada 83 mode
3065 -- N_Access_Function_Definition
3066 -- Sloc points to ACCESS
3067 -- Null_Exclusion_Present (Flag11)
3068 -- Null_Exclusion_In_Return_Present (Flag14)
3069 -- Protected_Present (Flag6)
3070 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3071 -- Result_Definition (Node4) result subtype (subtype mark or access def)
3073 -- N_Access_Procedure_Definition
3074 -- Sloc points to ACCESS
3075 -- Null_Exclusion_Present (Flag11)
3076 -- Protected_Present (Flag6)
3077 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3079 -----------------------------
3080 -- 3.10 Access Definition --
3081 -----------------------------
3083 -- ACCESS_DEFINITION ::=
3084 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER] SUBTYPE_MARK
3085 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
3087 -- Note: access to subprograms are an Ada 2005 (AI-254) extension
3089 -- N_Access_Definition
3090 -- Sloc points to ACCESS
3091 -- Null_Exclusion_Present (Flag11)
3092 -- All_Present (Flag15)
3093 -- Constant_Present (Flag17)
3094 -- Subtype_Mark (Node4)
3095 -- Access_To_Subprogram_Definition (Node3) (set to Empty if not present)
3097 -----------------------------------------
3098 -- 3.10.1 Incomplete Type Declaration --
3099 -----------------------------------------
3101 -- INCOMPLETE_TYPE_DECLARATION ::=
3102 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [IS TAGGED];
3104 -- N_Incomplete_Type_Declaration
3105 -- Sloc points to TYPE
3106 -- Defining_Identifier (Node1)
3107 -- Discriminant_Specifications (List4) (set to No_List if no
3108 -- discriminant part, or if the discriminant part is an
3109 -- unknown discriminant part)
3110 -- Premature_Use (Node5-Sem) used for improved diagnostics.
3111 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
3112 -- Tagged_Present (Flag15)
3114 ----------------------------
3115 -- 3.11 Declarative Part --
3116 ----------------------------
3118 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
3120 -- Note: although the parser enforces the syntactic requirement that
3121 -- a declarative part can contain only declarations, the semantic
3122 -- processing may add statements to the list of actions in a
3123 -- declarative part, so the code generator should be prepared
3124 -- to accept a statement in this position.
3126 ----------------------------
3127 -- 3.11 Declarative Item --
3128 ----------------------------
3130 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
3132 ----------------------------------
3133 -- 3.11 Basic Declarative Item --
3134 ----------------------------------
3136 -- BASIC_DECLARATIVE_ITEM ::=
3137 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
3143 -- BODY ::= PROPER_BODY | BODY_STUB
3145 -----------------------
3146 -- 3.11 Proper Body --
3147 -----------------------
3150 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
3157 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
3158 -- | INDEXED_COMPONENT | SLICE
3159 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
3160 -- | TYPE_CONVERSION | FUNCTION_CALL
3161 -- | CHARACTER_LITERAL
3163 ----------------------
3164 -- 4.1 Direct Name --
3165 ----------------------
3167 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
3173 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
3175 -------------------------------
3176 -- 4.1 Explicit Dereference --
3177 -------------------------------
3179 -- EXPLICIT_DEREFERENCE ::= NAME . all
3181 -- N_Explicit_Dereference
3182 -- Sloc points to ALL
3184 -- Actual_Designated_Subtype (Node4-Sem)
3185 -- Atomic_Sync_Required (Flag14-Sem)
3186 -- plus fields for expression
3188 -------------------------------
3189 -- 4.1 Implicit Dereference --
3190 -------------------------------
3192 -- IMPLICIT_DEREFERENCE ::= NAME
3194 ------------------------------
3195 -- 4.1.1 Indexed Component --
3196 ------------------------------
3198 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
3200 -- Note: the parser may generate this node in some situations where it
3201 -- should be a function call. The semantic pass must correct this
3202 -- misidentification (which is inevitable at the parser level).
3204 -- N_Indexed_Component
3205 -- Sloc contains a copy of the Sloc value of the Prefix
3207 -- Expressions (List1)
3208 -- Atomic_Sync_Required (Flag14-Sem)
3209 -- plus fields for expression
3211 -- Note: if any of the subscripts requires a range check, then the
3212 -- Do_Range_Check flag is set on the corresponding expression, with
3213 -- the index type being determined from the type of the Prefix, which
3214 -- references the array being indexed.
3216 -- Note: in a fully analyzed and expanded indexed component node, and
3217 -- hence in any such node that gigi sees, if the prefix is an access
3218 -- type, then an explicit dereference operation has been inserted.
3224 -- SLICE ::= PREFIX (DISCRETE_RANGE)
3226 -- Note: an implicit subtype is created to describe the resulting
3227 -- type, so that the bounds of this type are the bounds of the slice.
3230 -- Sloc points to first token of prefix
3232 -- Discrete_Range (Node4)
3233 -- plus fields for expression
3235 -------------------------------
3236 -- 4.1.3 Selected Component --
3237 -------------------------------
3239 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
3241 -- Note: selected components that are semantically expanded names get
3242 -- changed during semantic processing into the separate N_Expanded_Name
3243 -- node. See description of this node in the section on semantic nodes.
3245 -- N_Selected_Component
3246 -- Sloc points to period
3248 -- Selector_Name (Node2)
3249 -- Associated_Node (Node4-Sem)
3250 -- Do_Discriminant_Check (Flag13-Sem)
3251 -- Is_In_Discriminant_Check (Flag11-Sem)
3252 -- Atomic_Sync_Required (Flag14-Sem)
3253 -- plus fields for expression
3255 --------------------------
3256 -- 4.1.3 Selector Name --
3257 --------------------------
3259 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
3261 --------------------------------
3262 -- 4.1.4 Attribute Reference --
3263 --------------------------------
3265 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
3267 -- Note: the syntax is quite ambiguous at this point. Consider:
3269 -- A'Length (X) X is part of the attribute designator
3270 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
3271 -- A'Class (X) X is the expression of a type conversion
3273 -- It would be possible for the parser to distinguish these cases
3274 -- by looking at the attribute identifier. However, that would mean
3275 -- more work in introducing new implementation defined attributes,
3276 -- and also it would mean that special processing for attributes
3277 -- would be scattered around, instead of being centralized in the
3278 -- semantic routine that handles an N_Attribute_Reference node.
3279 -- Consequently, the parser in all the above cases stores the
3280 -- expression (X in these examples) as a single element list in
3281 -- in the Expressions field of the N_Attribute_Reference node.
3283 -- Similarly, for attributes like Max which take two arguments,
3284 -- we store the two arguments as a two element list in the
3285 -- Expressions field. Of course it is clear at parse time that
3286 -- this case is really a function call with an attribute as the
3287 -- prefix, but it turns out to be convenient to handle the two
3288 -- argument case in a similar manner to the one argument case,
3289 -- and indeed in general the parser will accept any number of
3290 -- expressions in this position and store them as a list in the
3291 -- attribute reference node. This allows for future addition of
3292 -- attributes that take more than two arguments.
3294 -- Note: named associates are not permitted in function calls where
3295 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
3296 -- to skip the normal subprogram argument processing.
3298 -- Note: for the attributes whose designators are technically keywords,
3299 -- i.e. digits, access, delta, range, the Attribute_Name field contains
3300 -- the corresponding name, even though no identifier is involved.
3302 -- Note: the generated code may contain stream attributes applied to
3303 -- limited types for which no stream routines exist officially. In such
3304 -- case, the result is to use the stream attribute for the underlying
3305 -- full type, or in the case of a protected type, the components
3306 -- (including any discriminants) are merely streamed in order.
3308 -- See Exp_Attr for a complete description of which attributes are
3309 -- passed onto Gigi, and which are handled entirely by the front end.
3311 -- Gigi restriction: For the Pos attribute, the prefix cannot be
3312 -- a non-standard enumeration type or a nonzero/zero semantics
3313 -- boolean type, so the value is simply the stored representation.
3315 -- Gigi requirement: For the Mechanism_Code attribute, if the prefix
3316 -- references a subprogram that is a renaming, then the front end must
3317 -- rewrite the attribute to refer directly to the renamed entity.
3319 -- Note: In generated code, the Address and Unrestricted_Access
3320 -- attributes can be applied to any expression, and the meaning is
3321 -- to create an object containing the value (the object is in the
3322 -- current stack frame), and pass the address of this value. If the
3323 -- Must_Be_Byte_Aligned flag is set, then the object whose address
3324 -- is taken must be on a byte (storage unit) boundary, and if it is
3325 -- not (or may not be), then the generated code must create a copy
3326 -- that is byte aligned, and pass the address of this copy.
3328 -- N_Attribute_Reference
3329 -- Sloc points to apostrophe
3331 -- Attribute_Name (Name2) identifier name from attribute designator
3332 -- Expressions (List1) (set to No_List if no associated expressions)
3333 -- Entity (Node4-Sem) used if the attribute yields a type
3334 -- Associated_Node (Node4-Sem)
3335 -- Do_Overflow_Check (Flag17-Sem)
3336 -- Header_Size_Added (Flag11-Sem)
3337 -- Redundant_Use (Flag13-Sem)
3338 -- Must_Be_Byte_Aligned (Flag14)
3339 -- plus fields for expression
3341 ---------------------------------
3342 -- 4.1.4 Attribute Designator --
3343 ---------------------------------
3345 -- ATTRIBUTE_DESIGNATOR ::=
3346 -- IDENTIFIER [(static_EXPRESSION)]
3347 -- | access | delta | digits
3349 -- There is no explicit node in the tree for an attribute designator.
3350 -- Instead the Attribute_Name and Expressions fields of the parent
3351 -- node (N_Attribute_Reference node) hold the information.
3353 -- Note: if ACCESS, DELTA or DIGITS appears in an attribute
3354 -- designator, then they are treated as identifiers internally
3355 -- rather than the keywords of the same name.
3357 --------------------------------------
3358 -- 4.1.4 Range Attribute Reference --
3359 --------------------------------------
3361 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
3363 -- A range attribute reference is represented in the tree using the
3364 -- normal N_Attribute_Reference node.
3366 ---------------------------------------
3367 -- 4.1.4 Range Attribute Designator --
3368 ---------------------------------------
3370 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
3372 -- A range attribute designator is represented in the tree using the
3373 -- normal N_Attribute_Reference node.
3375 --------------------
3377 --------------------
3380 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
3382 -----------------------------
3383 -- 4.3.1 Record Aggregate --
3384 -----------------------------
3386 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
3389 -- Sloc points to left parenthesis
3390 -- Expressions (List1) (set to No_List if none or null record case)
3391 -- Component_Associations (List2) (set to No_List if none)
3392 -- Null_Record_Present (Flag17)
3393 -- Aggregate_Bounds (Node3-Sem)
3394 -- Associated_Node (Node4-Sem)
3395 -- Static_Processing_OK (Flag4-Sem)
3396 -- Compile_Time_Known_Aggregate (Flag18-Sem)
3397 -- Expansion_Delayed (Flag11-Sem)
3398 -- Has_Self_Reference (Flag13-Sem)
3399 -- plus fields for expression
3401 -- Note: this structure is used for both record and array aggregates
3402 -- since the two cases are not separable by the parser. The parser
3403 -- makes no attempt to enforce consistency here, so it is up to the
3404 -- semantic phase to make sure that the aggregate is consistent (i.e.
3405 -- that it is not a "half-and-half" case that mixes record and array
3406 -- syntax. In particular, for a record aggregate, the expressions
3407 -- field will be set if there are positional associations.
3409 -- Note: N_Aggregate is not used for all aggregates; in particular,
3410 -- there is a separate node kind for extension aggregates.
3412 -- Note: gigi/gcc can handle array aggregates correctly providing that
3413 -- they are entirely positional, and the array subtype involved has a
3414 -- known at compile time length and is not bit packed, or a convention
3415 -- Fortran array with more than one dimension. If these conditions
3416 -- are not met, then the front end must translate the aggregate into
3417 -- an appropriate set of assignments into a temporary.
3419 -- Note: for the record aggregate case, gigi/gcc can handle all cases of
3420 -- record aggregates, including those for packed, and rep-claused
3421 -- records, and also variant records, providing that there are no
3422 -- variable length fields whose size is not known at compile time, and
3423 -- providing that the aggregate is presented in fully named form.
3425 ----------------------------------------------
3426 -- 4.3.1 Record Component Association List --
3427 ----------------------------------------------
3429 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
3430 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
3433 -- There is no explicit node in the tree for a record component
3434 -- association list. Instead the Null_Record_Present flag is set in
3435 -- the parent node for the NULL RECORD case.
3437 ------------------------------------------------------
3438 -- 4.3.1 Record Component Association (also 4.3.3) --
3439 ------------------------------------------------------
3441 -- RECORD_COMPONENT_ASSOCIATION ::=
3442 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
3444 -- N_Component_Association
3445 -- Sloc points to first selector name
3447 -- Loop_Actions (List2-Sem)
3448 -- Expression (Node3)
3449 -- Box_Present (Flag15)
3450 -- Inherited_Discriminant (Flag13)
3452 -- Note: this structure is used for both record component associations
3453 -- and array component associations, since the two cases aren't always
3454 -- separable by the parser. The choices list may represent either a
3455 -- list of selector names in the record aggregate case, or a list of
3456 -- discrete choices in the array aggregate case or an N_Others_Choice
3457 -- node (which appears as a singleton list). Box_Present gives support
3458 -- to Ada 2005 (AI-287).
3460 ----------------------------------
3461 -- 4.3.1 Component Choice List --
3462 ----------------------------------
3464 -- COMPONENT_CHOICE_LIST ::=
3465 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
3468 -- The entries of a component choice list appear in the Choices list of
3469 -- the associated N_Component_Association, as either selector names, or
3470 -- as an N_Others_Choice node.
3472 --------------------------------
3473 -- 4.3.2 Extension Aggregate --
3474 --------------------------------
3476 -- EXTENSION_AGGREGATE ::=
3477 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
3479 -- Note: extension aggregates are not permitted in Ada 83 mode
3481 -- N_Extension_Aggregate
3482 -- Sloc points to left parenthesis
3483 -- Ancestor_Part (Node3)
3484 -- Associated_Node (Node4-Sem)
3485 -- Expressions (List1) (set to No_List if none or null record case)
3486 -- Component_Associations (List2) (set to No_List if none)
3487 -- Null_Record_Present (Flag17)
3488 -- Expansion_Delayed (Flag11-Sem)
3489 -- Has_Self_Reference (Flag13-Sem)
3490 -- plus fields for expression
3492 --------------------------
3493 -- 4.3.2 Ancestor Part --
3494 --------------------------
3496 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
3498 ----------------------------
3499 -- 4.3.3 Array Aggregate --
3500 ----------------------------
3502 -- ARRAY_AGGREGATE ::=
3503 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
3505 ---------------------------------------
3506 -- 4.3.3 Positional Array Aggregate --
3507 ---------------------------------------
3509 -- POSITIONAL_ARRAY_AGGREGATE ::=
3510 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
3511 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
3513 -- See Record_Aggregate (4.3.1) for node structure
3515 ----------------------------------
3516 -- 4.3.3 Named Array Aggregate --
3517 ----------------------------------
3519 -- NAMED_ARRAY_AGGREGATE ::=
3520 -- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
3522 -- See Record_Aggregate (4.3.1) for node structure
3524 ----------------------------------------
3525 -- 4.3.3 Array Component Association --
3526 ----------------------------------------
3528 -- ARRAY_COMPONENT_ASSOCIATION ::=
3529 -- DISCRETE_CHOICE_LIST => EXPRESSION
3531 -- See Record_Component_Association (4.3.1) for node structure
3533 --------------------------------------------------
3534 -- 4.4 Expression/Relation/Term/Factor/Primary --
3535 --------------------------------------------------
3538 -- RELATION {LOGICAL_OPERATOR RELATION}
3540 -- CHOICE_EXPRESSION ::=
3541 -- CHOICE_RELATION {LOGICAL_OPERATOR CHOICE_RELATION}
3543 -- CHOICE_RELATION ::=
3544 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
3547 -- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
3549 -- MEMBERSHIP_CHOICE_LIST ::=
3550 -- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
3552 -- MEMBERSHIP_CHOICE ::=
3553 -- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
3555 -- LOGICAL_OPERATOR ::= and | and then | or | or else | xor
3557 -- SIMPLE_EXPRESSION ::=
3558 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
3560 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
3562 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
3564 -- No nodes are generated for any of these constructs. Instead, the
3565 -- node for the operator appears directly. When we refer to an
3566 -- expression in this description, we mean any of the possible
3567 -- constituent components of an expression (e.g. identifier is
3568 -- an example of an expression).
3570 -- Note: the above syntax is that Ada 2012 syntax which restricts
3571 -- choice relations to simple expressions to avoid ambiguities in
3572 -- some contexts with set membership notation. It has been decided
3573 -- that in retrospect, the Ada 95 change allowing general expressions
3574 -- in this context was a mistake, so we have reverted to the above
3575 -- syntax in Ada 95 and Ada 2005 modes (the restriction to simple
3576 -- expressions was there in Ada 83 from the start).
3583 -- NUMERIC_LITERAL | null
3584 -- | STRING_LITERAL | AGGREGATE
3585 -- | NAME | QUALIFIED_EXPRESSION
3586 -- | ALLOCATOR | (EXPRESSION)
3588 -- Usually there is no explicit node in the tree for primary. Instead
3589 -- the constituent (e.g. AGGREGATE) appears directly. There are two
3590 -- exceptions. First, there is an explicit node for a null primary.
3593 -- Sloc points to NULL
3594 -- plus fields for expression
3596 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
3597 -- that the parser keep track of which subexpressions are enclosed
3598 -- in parentheses, and how many levels of parentheses are used. This
3599 -- information is required for optimization purposes, and also for
3600 -- some semantic checks (e.g. (((1))) in a procedure spec does not
3601 -- conform with ((((1)))) in the body).
3603 -- The parentheses are recorded by keeping a Paren_Count field in every
3604 -- subexpression node (it is actually present in all nodes, but only
3605 -- used in subexpression nodes). This count records the number of
3606 -- levels of parentheses. If the number of levels in the source exceeds
3607 -- the maximum accommodated by this count, then the count is simply left
3608 -- at the maximum value. This means that there are some pathological
3609 -- cases of failure to detect conformance failures (e.g. an expression
3610 -- with 500 levels of parens will conform with one with 501 levels),
3611 -- but we do not need to lose sleep over this.
3613 -- Historical note: in versions of GNAT prior to 1.75, there was a node
3614 -- type N_Parenthesized_Expression used to accurately record unlimited
3615 -- numbers of levels of parentheses. However, it turned out to be a
3616 -- real nuisance to have to take into account the possible presence of
3617 -- this node during semantic analysis, since basically parentheses have
3618 -- zero relevance to semantic analysis.
3620 -- Note: the level of parentheses always present in things like
3621 -- aggregates does not count, only the parentheses in the primary
3622 -- (EXPRESSION) affect the setting of the Paren_Count field.
3624 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
3625 -- treated as though it were Empty) if No_Initialization is set True.
3627 --------------------------------------
3628 -- 4.5 Short Circuit Control Forms --
3629 --------------------------------------
3632 -- RELATION {and then RELATION} | RELATION {or else RELATION}
3634 -- Gigi restriction: For both these control forms, the operand and
3635 -- result types are always Standard.Boolean. The expander inserts the
3636 -- required conversion operations where needed to ensure this is the
3640 -- Sloc points to AND of AND THEN
3641 -- Left_Opnd (Node2)
3642 -- Right_Opnd (Node3)
3643 -- Actions (List1-Sem)
3644 -- plus fields for expression
3647 -- Sloc points to OR of OR ELSE
3648 -- Left_Opnd (Node2)
3649 -- Right_Opnd (Node3)
3650 -- Actions (List1-Sem)
3651 -- plus fields for expression
3653 -- Note: The Actions field is used to hold actions associated with
3654 -- the right hand operand. These have to be treated specially since
3655 -- they are not unconditionally executed. See Insert_Actions for a
3656 -- more detailed description of how these actions are handled.
3658 ---------------------------
3659 -- 4.5 Membership Tests --
3660 ---------------------------
3663 -- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
3665 -- MEMBERSHIP_CHOICE_LIST ::=
3666 -- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
3668 -- MEMBERSHIP_CHOICE ::=
3669 -- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
3671 -- Note: although the grammar above allows only a range or a subtype
3672 -- mark, the parser in fact will accept any simple expression in place
3673 -- of a subtype mark. This means that the semantic analyzer must be able
3674 -- to deal with, and diagnose a simple expression other than a name for
3675 -- the right operand. This simplifies error recovery in the parser.
3677 -- The Alternatives field below is present only if there is more
3678 -- than one Membership_Choice present (which is legitimate only in
3679 -- Ada 2012 mode) in which case Right_Opnd is Empty, and Alternatives
3680 -- contains the list of choices. In the tree passed to the back end,
3681 -- Alternatives is always No_List, and Right_Opnd is set (i.e. the
3682 -- expansion circuitry expands out the complex set membership case
3683 -- using simple membership operations).
3685 -- Should we rename Alternatives here to Membership_Choices ???
3688 -- Sloc points to IN
3689 -- Left_Opnd (Node2)
3690 -- Right_Opnd (Node3)
3691 -- Alternatives (List4) (set to No_List if only one set alternative)
3692 -- plus fields for expression
3695 -- Sloc points to NOT of NOT IN
3696 -- Left_Opnd (Node2)
3697 -- Right_Opnd (Node3)
3698 -- Alternatives (List4) (set to No_List if only one set alternative)
3699 -- plus fields for expression
3701 --------------------
3703 --------------------
3705 -- LOGICAL_OPERATOR ::= and | or | xor
3707 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
3709 -- BINARY_ADDING_OPERATOR ::= + | - | &
3711 -- UNARY_ADDING_OPERATOR ::= + | -
3713 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
3715 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
3717 -- Sprint syntax if Treat_Fixed_As_Integer is set:
3724 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
3725 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
3726 -- All handling of smalls for multiplication and division is handled
3727 -- by the front end (mod and rem result only from expansion). Gigi
3728 -- thus never needs to worry about small values (for other operators
3729 -- operating on fixed-point, e.g. addition, the small value does not
3730 -- have any semantic effect anyway, these are always integer operations.
3732 -- Gigi restriction: For all operators taking Boolean operands, the
3733 -- type is always Standard.Boolean. The expander inserts the required
3734 -- conversion operations where needed to ensure this is the case.
3737 -- Sloc points to AND
3738 -- Do_Length_Check (Flag4-Sem)
3739 -- plus fields for binary operator
3740 -- plus fields for expression
3743 -- Sloc points to OR
3744 -- Do_Length_Check (Flag4-Sem)
3745 -- plus fields for binary operator
3746 -- plus fields for expression
3749 -- Sloc points to XOR
3750 -- Do_Length_Check (Flag4-Sem)
3751 -- plus fields for binary operator
3752 -- plus fields for expression
3756 -- plus fields for binary operator
3757 -- plus fields for expression
3760 -- Sloc points to /=
3761 -- plus fields for binary operator
3762 -- plus fields for expression
3766 -- plus fields for binary operator
3767 -- plus fields for expression
3770 -- Sloc points to <=
3771 -- plus fields for binary operator
3772 -- plus fields for expression
3776 -- plus fields for binary operator
3777 -- plus fields for expression
3780 -- Sloc points to >=
3781 -- plus fields for binary operator
3782 -- plus fields for expression
3785 -- Sloc points to + (binary)
3786 -- plus fields for binary operator
3787 -- plus fields for expression
3790 -- Sloc points to - (binary)
3791 -- plus fields for binary operator
3792 -- plus fields for expression
3796 -- Is_Component_Left_Opnd (Flag13-Sem)
3797 -- Is_Component_Right_Opnd (Flag14-Sem)
3798 -- plus fields for binary operator
3799 -- plus fields for expression
3803 -- Treat_Fixed_As_Integer (Flag14-Sem)
3804 -- Rounded_Result (Flag18-Sem)
3805 -- plus fields for binary operator
3806 -- plus fields for expression
3810 -- Treat_Fixed_As_Integer (Flag14-Sem)
3811 -- Do_Division_Check (Flag13-Sem)
3812 -- Rounded_Result (Flag18-Sem)
3813 -- plus fields for binary operator
3814 -- plus fields for expression
3817 -- Sloc points to MOD
3818 -- Treat_Fixed_As_Integer (Flag14-Sem)
3819 -- Do_Division_Check (Flag13-Sem)
3820 -- plus fields for binary operator
3821 -- plus fields for expression
3824 -- Sloc points to REM
3825 -- Treat_Fixed_As_Integer (Flag14-Sem)
3826 -- Do_Division_Check (Flag13-Sem)
3827 -- plus fields for binary operator
3828 -- plus fields for expression
3831 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
3832 -- Sloc points to **
3833 -- plus fields for binary operator
3834 -- plus fields for expression
3837 -- Sloc points to + (unary)
3838 -- plus fields for unary operator
3839 -- plus fields for expression
3842 -- Sloc points to - (unary)
3843 -- plus fields for unary operator
3844 -- plus fields for expression
3847 -- Sloc points to ABS
3848 -- plus fields for unary operator
3849 -- plus fields for expression
3852 -- Sloc points to NOT
3853 -- plus fields for unary operator
3854 -- plus fields for expression
3856 -- See also shift operators in section B.2
3858 -- Note on fixed-point operations passed to Gigi: For adding operators,
3859 -- the semantics is to treat these simply as integer operations, with
3860 -- the small values being ignored (the bounds are already stored in
3861 -- units of small, so that constraint checking works as usual). For the
3862 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
3863 -- point operands if the Treat_Fixed_As_Integer flag is set and will
3864 -- thus treat these nodes in identical manner, ignoring small values.
3866 ---------------------------------
3867 -- 4.5.9 Quantified Expression --
3868 ---------------------------------
3870 -- QUANTIFIED_EXPRESSION ::=
3871 -- for QUANTIFIER LOOP_PARAMETER_SPECIFICATION => PREDICATE
3872 -- | for QUANTIFIER ITERATOR_SPECIFICATION => PREDICATE
3874 -- QUANTIFIER ::= all | some
3876 -- At most one of (Iterator_Specification, Loop_Parameter_Specification)
3877 -- is present at a time, in which case the other one is empty.
3879 -- N_Quantified_Expression
3880 -- Sloc points to FOR
3881 -- Iterator_Specification (Node2)
3882 -- Loop_Parameter_Specification (Node4)
3883 -- Condition (Node1)
3884 -- All_Present (Flag15)
3886 --------------------------
3887 -- 4.6 Type Conversion --
3888 --------------------------
3890 -- TYPE_CONVERSION ::=
3891 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
3893 -- In the (NAME) case, the name is stored as the expression
3895 -- Note: the parser never generates a type conversion node, since it
3896 -- looks like an indexed component which is generated by preference.
3897 -- The semantic pass must correct this misidentification.
3899 -- Gigi handles conversions that involve no change in the root type,
3900 -- and also all conversions from integer to floating-point types.
3901 -- Conversions from floating-point to integer are only handled in
3902 -- the case where Float_Truncate flag set. Other conversions from
3903 -- floating-point to integer (involving rounding) and all conversions
3904 -- involving fixed-point types are handled by the expander.
3906 -- Sprint syntax if Float_Truncate set: X^(Y)
3907 -- Sprint syntax if Conversion_OK set X?(Y)
3908 -- Sprint syntax if both flags set X?^(Y)
3910 -- Note: If either the operand or result type is fixed-point, Gigi will
3911 -- only see a type conversion node with Conversion_OK set. The front end
3912 -- takes care of all handling of small's for fixed-point conversions.
3914 -- N_Type_Conversion
3915 -- Sloc points to first token of subtype mark
3916 -- Subtype_Mark (Node4)
3917 -- Expression (Node3)
3918 -- Do_Tag_Check (Flag13-Sem)
3919 -- Do_Length_Check (Flag4-Sem)
3920 -- Do_Overflow_Check (Flag17-Sem)
3921 -- Float_Truncate (Flag11-Sem)
3922 -- Rounded_Result (Flag18-Sem)
3923 -- Conversion_OK (Flag14-Sem)
3924 -- plus fields for expression
3926 -- Note: if a range check is required, then the Do_Range_Check flag
3927 -- is set in the Expression with the check being done against the
3928 -- target type range (after the base type conversion, if any).
3930 -------------------------------
3931 -- 4.7 Qualified Expression --
3932 -------------------------------
3934 -- QUALIFIED_EXPRESSION ::=
3935 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
3937 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
3938 -- the expression, so the Expression field of this node always points
3939 -- to a parenthesized expression in this case (i.e. Paren_Count will
3940 -- always be non-zero for the referenced expression if it is not an
3943 -- N_Qualified_Expression
3944 -- Sloc points to apostrophe
3945 -- Subtype_Mark (Node4)
3946 -- Expression (Node3) expression or aggregate
3947 -- plus fields for expression
3949 --------------------
3951 --------------------
3954 -- new [SUBPOOL_SPECIFICATION] SUBTYPE_INDICATION
3955 -- | new [SUBPOOL_SPECIFICATION] QUALIFIED_EXPRESSION
3957 -- SUBPOOL_SPECIFICATION ::= (subpool_handle_NAME)
3959 -- Sprint syntax (when storage pool present)
3960 -- new xxx (storage_pool = pool)
3962 -- new (subpool) xxx (storage_pool = pool)
3965 -- Sloc points to NEW
3966 -- Expression (Node3) subtype indication or qualified expression
3967 -- Subpool_Handle_Name (Node4) (set to Empty if not present)
3968 -- Storage_Pool (Node1-Sem)
3969 -- Procedure_To_Call (Node2-Sem)
3970 -- Null_Exclusion_Present (Flag11)
3971 -- No_Initialization (Flag13-Sem)
3972 -- Is_Static_Coextension (Flag14-Sem)
3973 -- Do_Storage_Check (Flag17-Sem)
3974 -- Is_Dynamic_Coextension (Flag18-Sem)
3975 -- plus fields for expression
3977 -- Note: like all nodes, the N_Allocator has the Comes_From_Source flag.
3978 -- This flag has a special function in conjunction with the restriction
3979 -- No_Implicit_Heap_Allocations, which will be triggered if this flag
3980 -- is not set. This means that if a source allocator is replaced with
3981 -- a constructed allocator, the Comes_From_Source flag should be copied
3982 -- to the newly created allocator.
3984 ---------------------------------
3985 -- 5.1 Sequence Of Statements --
3986 ---------------------------------
3988 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
3990 -- Note: Although the parser will not accept a declaration as a
3991 -- statement, the semantic analyzer may insert declarations (e.g.
3992 -- declarations of implicit types needed for execution of other
3993 -- statements) into a sequence of statements, so the code generator
3994 -- should be prepared to accept a declaration where a statement is
3995 -- expected. Note also that pragmas can appear as statements.
3997 --------------------
3999 --------------------
4002 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
4004 -- There is no explicit node in the tree for a statement. Instead, the
4005 -- individual statement appears directly. Labels are treated as a
4006 -- kind of statement, i.e. they are linked into a statement list at
4007 -- the point they appear, so the labeled statement appears following
4008 -- the label or labels in the statement list.
4010 ---------------------------
4011 -- 5.1 Simple Statement --
4012 ---------------------------
4014 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
4015 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
4016 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
4017 -- | SIMPLE_RETURN_STATEMENT | ENTRY_CALL_STATEMENT
4018 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
4019 -- | ABORT_STATEMENT | RAISE_STATEMENT
4022 -----------------------------
4023 -- 5.1 Compound Statement --
4024 -----------------------------
4026 -- COMPOUND_STATEMENT ::=
4027 -- IF_STATEMENT | CASE_STATEMENT
4028 -- | LOOP_STATEMENT | BLOCK_STATEMENT
4029 -- | EXTENDED_RETURN_STATEMENT
4030 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
4032 -------------------------
4033 -- 5.1 Null Statement --
4034 -------------------------
4036 -- NULL_STATEMENT ::= null;
4039 -- Sloc points to NULL
4045 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
4047 -- Note that the occurrence of a label is not a defining identifier,
4048 -- but rather a referencing occurrence. The defining occurrence is
4049 -- in the implicit label declaration which occurs in the innermost
4053 -- Sloc points to <<
4054 -- Identifier (Node1) direct name of statement identifier
4055 -- Exception_Junk (Flag8-Sem)
4057 -- Note: Before Ada 2012, a label is always followed by a statement,
4058 -- and this is true in the tree even in Ada 2012 mode (the parser
4059 -- inserts a null statement marked with Comes_From_Source False).
4061 -------------------------------
4062 -- 5.1 Statement Identifier --
4063 -------------------------------
4065 -- STATEMENT_IDENTIFIER ::= DIRECT_NAME
4067 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
4068 -- (not an OPERATOR_SYMBOL)
4070 -------------------------------
4071 -- 5.2 Assignment Statement --
4072 -------------------------------
4074 -- ASSIGNMENT_STATEMENT ::=
4075 -- variable_NAME := EXPRESSION;
4077 -- N_Assignment_Statement
4078 -- Sloc points to :=
4080 -- Expression (Node3)
4081 -- Do_Tag_Check (Flag13-Sem)
4082 -- Do_Length_Check (Flag4-Sem)
4083 -- Forwards_OK (Flag5-Sem)
4084 -- Backwards_OK (Flag6-Sem)
4085 -- No_Ctrl_Actions (Flag7-Sem)
4086 -- Componentwise_Assignment (Flag14-Sem)
4087 -- Suppress_Assignment_Checks (Flag18-Sem)
4089 -- Note: if a range check is required, then the Do_Range_Check flag
4090 -- is set in the Expression (right hand side), with the check being
4091 -- done against the type of the Name (left hand side).
4093 -- Note: the back end places some restrictions on the form of the
4094 -- Expression field. If the object being assigned to is Atomic, then
4095 -- the Expression may not have the form of an aggregate (since this
4096 -- might cause the back end to generate separate assignments). In this
4097 -- case the front end must generate an extra temporary and initialize
4098 -- this temporary as required (the temporary itself is not atomic).
4100 -----------------------
4101 -- 5.3 If Statement --
4102 -----------------------
4105 -- if CONDITION then
4106 -- SEQUENCE_OF_STATEMENTS
4107 -- {elsif CONDITION then
4108 -- SEQUENCE_OF_STATEMENTS}
4110 -- SEQUENCE_OF_STATEMENTS]
4113 -- Gigi restriction: This expander ensures that the type of the
4114 -- Condition fields is always Standard.Boolean, even if the type
4115 -- in the source is some non-standard boolean type.
4118 -- Sloc points to IF
4119 -- Condition (Node1)
4120 -- Then_Statements (List2)
4121 -- Elsif_Parts (List3) (set to No_List if none present)
4122 -- Else_Statements (List4) (set to No_List if no else part present)
4123 -- End_Span (Uint5) (set to No_Uint if expander generated)
4126 -- Sloc points to ELSIF
4127 -- Condition (Node1)
4128 -- Then_Statements (List2)
4129 -- Condition_Actions (List3-Sem)
4131 --------------------
4133 --------------------
4135 -- CONDITION ::= boolean_EXPRESSION
4137 -------------------------
4138 -- 5.4 Case Statement --
4139 -------------------------
4141 -- CASE_STATEMENT ::=
4142 -- case EXPRESSION is
4143 -- CASE_STATEMENT_ALTERNATIVE
4144 -- {CASE_STATEMENT_ALTERNATIVE}
4147 -- Note: the Alternatives can contain pragmas. These only occur at
4148 -- the start of the list, since any pragmas occurring after the first
4149 -- alternative are absorbed into the corresponding statement sequence.
4152 -- Sloc points to CASE
4153 -- Expression (Node3)
4154 -- Alternatives (List4)
4155 -- End_Span (Uint5) (set to No_Uint if expander generated)
4157 -- Note: Before Ada 2012, a pragma in a statement sequence is always
4158 -- followed by a statement, and this is true in the tree even in Ada
4159 -- 2012 mode (the parser inserts a null statement marked with the flag
4160 -- Comes_From_Source False).
4162 -------------------------------------
4163 -- 5.4 Case Statement Alternative --
4164 -------------------------------------
4166 -- CASE_STATEMENT_ALTERNATIVE ::=
4167 -- when DISCRETE_CHOICE_LIST =>
4168 -- SEQUENCE_OF_STATEMENTS
4170 -- N_Case_Statement_Alternative
4171 -- Sloc points to WHEN
4172 -- Discrete_Choices (List4)
4173 -- Statements (List3)
4175 -------------------------
4176 -- 5.5 Loop Statement --
4177 -------------------------
4179 -- LOOP_STATEMENT ::=
4180 -- [loop_STATEMENT_IDENTIFIER :]
4181 -- [ITERATION_SCHEME] loop
4182 -- SEQUENCE_OF_STATEMENTS
4183 -- end loop [loop_IDENTIFIER];
4185 -- Note: The occurrence of a loop label is not a defining identifier
4186 -- but rather a referencing occurrence. The defining occurrence is in
4187 -- the implicit label declaration which occurs in the innermost
4190 -- Note: there is always a loop statement identifier present in
4191 -- the tree, even if none was given in the source. In the case where
4192 -- no loop identifier is given in the source, the parser creates
4193 -- a name of the form _Loop_n, where n is a decimal integer (the
4194 -- two underlines ensure that the loop names created in this manner
4195 -- do not conflict with any user defined identifiers), and the flag
4196 -- Has_Created_Identifier is set to True. The only exception to the
4197 -- rule that all loop statement nodes have identifiers occurs for
4198 -- loops constructed by the expander, and the semantic analyzer will
4199 -- create and supply dummy loop identifiers in these cases.
4202 -- Sloc points to LOOP
4203 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
4204 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
4205 -- Statements (List3)
4206 -- End_Label (Node4)
4207 -- Has_Created_Identifier (Flag15)
4208 -- Is_Null_Loop (Flag16)
4209 -- Suppress_Loop_Warnings (Flag17)
4211 -- Note: the parser fills in the Identifier field if there is an
4212 -- explicit loop identifier. Otherwise the parser leaves this field
4213 -- set to Empty, and then the semantic processing for a loop statement
4214 -- creates an identifier, setting the Has_Created_Identifier flag to
4215 -- True. So after semantic analysis, the Identifier is always set,
4216 -- referencing an identifier whose entity has an Ekind of E_Loop.
4218 ---------------------------
4219 -- 5.5 Iteration Scheme --
4220 ---------------------------
4222 -- ITERATION_SCHEME ::=
4224 -- | for LOOP_PARAMETER_SPECIFICATION
4225 -- | for ITERATOR_SPECIFICATION
4227 -- At most one of (Iterator_Specification, Loop_Parameter_Specification)
4228 -- is present at a time, in which case the other one is empty. Both are
4229 -- empty in the case of a WHILE loop.
4231 -- Gigi restriction: This expander ensures that the type of the
4232 -- Condition field is always Standard.Boolean, even if the type
4233 -- in the source is some non-standard boolean type.
4235 -- N_Iteration_Scheme
4236 -- Sloc points to WHILE or FOR
4237 -- Condition (Node1) (set to Empty if FOR case)
4238 -- Condition_Actions (List3-Sem)
4239 -- Iterator_Specification (Node2) (set to Empty if WHILE case)
4240 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
4242 ---------------------------------------
4243 -- 5.5 Loop Parameter Specification --
4244 ---------------------------------------
4246 -- LOOP_PARAMETER_SPECIFICATION ::=
4247 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
4249 -- N_Loop_Parameter_Specification
4250 -- Sloc points to first identifier
4251 -- Defining_Identifier (Node1)
4252 -- Reverse_Present (Flag15)
4253 -- Discrete_Subtype_Definition (Node4)
4255 -----------------------------------
4256 -- 5.5.1 Iterator Specification --
4257 -----------------------------------
4259 -- ITERATOR_SPECIFICATION ::=
4260 -- DEFINING_IDENTIFIER in [reverse] NAME
4261 -- | DEFINING_IDENTIFIER [: SUBTYPE_INDICATION] of [reverse] NAME
4263 -- N_Iterator_Specification
4264 -- Sloc points to defining identifier
4265 -- Defining_Identifier (Node1)
4267 -- Reverse_Present (Flag15)
4268 -- Of_Present (Flag16)
4269 -- Subtype_Indication (Node5)
4271 -- Note: The Of_Present flag distinguishes the two forms
4273 --------------------------
4274 -- 5.6 Block Statement --
4275 --------------------------
4277 -- BLOCK_STATEMENT ::=
4278 -- [block_STATEMENT_IDENTIFIER:]
4280 -- DECLARATIVE_PART]
4282 -- HANDLED_SEQUENCE_OF_STATEMENTS
4283 -- end [block_IDENTIFIER];
4285 -- Note that the occurrence of a block identifier is not a defining
4286 -- identifier, but rather a referencing occurrence. The defining
4287 -- occurrence is an E_Block entity declared by the implicit label
4288 -- declaration which occurs in the innermost enclosing block statement
4289 -- or body; the block identifier denotes that E_Block.
4291 -- For block statements that come from source code, there is always a
4292 -- block statement identifier present in the tree, denoting an
4293 -- E_Block. In the case where no block identifier is given in the
4294 -- source, the parser creates a name of the form B_n, where n is a
4295 -- decimal integer, and the flag Has_Created_Identifier is set to
4296 -- True. Blocks constructed by the expander usually have no identifier,
4297 -- and no corresponding entity.
4299 -- Note: the block statement created for an extended return statement
4300 -- has an entity, and this entity is an E_Return_Statement, rather than
4301 -- the usual E_Block.
4303 -- Note: Exception_Junk is set for the wrapping blocks created during
4304 -- local raise optimization (Exp_Ch11.Expand_Local_Exception_Handlers).
4306 -- N_Block_Statement
4307 -- Sloc points to DECLARE or BEGIN
4308 -- Identifier (Node1) block direct name (set to Empty if not present)
4309 -- Declarations (List2) (set to No_List if no DECLARE part)
4310 -- Handled_Statement_Sequence (Node4)
4311 -- Is_Task_Master (Flag5-Sem)
4312 -- Activation_Chain_Entity (Node3-Sem)
4313 -- Has_Created_Identifier (Flag15)
4314 -- Is_Task_Allocation_Block (Flag6)
4315 -- Is_Asynchronous_Call_Block (Flag7)
4316 -- Exception_Junk (Flag8-Sem)
4318 -------------------------
4319 -- 5.7 Exit Statement --
4320 -------------------------
4322 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
4324 -- Gigi restriction: This expander ensures that the type of the
4325 -- Condition field is always Standard.Boolean, even if the type
4326 -- in the source is some non-standard boolean type.
4329 -- Sloc points to EXIT
4330 -- Name (Node2) (set to Empty if no loop name present)
4331 -- Condition (Node1) (set to Empty if no WHEN part present)
4332 -- Next_Exit_Statement (Node3-Sem): Next exit on chain
4334 -------------------------
4335 -- 5.9 Goto Statement --
4336 -------------------------
4338 -- GOTO_STATEMENT ::= goto label_NAME;
4341 -- Sloc points to GOTO
4343 -- Exception_Junk (Flag8-Sem)
4345 ---------------------------------
4346 -- 6.1 Subprogram Declaration --
4347 ---------------------------------
4349 -- SUBPROGRAM_DECLARATION ::=
4350 -- SUBPROGRAM_SPECIFICATION
4351 -- [ASPECT_SPECIFICATIONS];
4353 -- N_Subprogram_Declaration
4354 -- Sloc points to FUNCTION or PROCEDURE
4355 -- Specification (Node1)
4356 -- Body_To_Inline (Node3-Sem)
4357 -- Corresponding_Body (Node5-Sem)
4358 -- Parent_Spec (Node4-Sem)
4360 ------------------------------------------
4361 -- 6.1 Abstract Subprogram Declaration --
4362 ------------------------------------------
4364 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
4365 -- SUBPROGRAM_SPECIFICATION is abstract
4366 -- [ASPECT_SPECIFICATIONS];
4368 -- N_Abstract_Subprogram_Declaration
4369 -- Sloc points to ABSTRACT
4370 -- Specification (Node1)
4372 -----------------------------------
4373 -- 6.1 Subprogram Specification --
4374 -----------------------------------
4376 -- SUBPROGRAM_SPECIFICATION ::=
4377 -- [[not] overriding]
4378 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
4379 -- | [[not] overriding]
4380 -- function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
4382 -- Note: there are no separate nodes for the profiles, instead the
4383 -- information appears directly in the following nodes.
4385 -- N_Function_Specification
4386 -- Sloc points to FUNCTION
4387 -- Defining_Unit_Name (Node1) (the designator)
4388 -- Elaboration_Boolean (Node2-Sem)
4389 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4390 -- Null_Exclusion_Present (Flag11)
4391 -- Result_Definition (Node4) for result subtype
4392 -- Generic_Parent (Node5-Sem)
4393 -- Must_Override (Flag14) set if overriding indicator present
4394 -- Must_Not_Override (Flag15) set if not_overriding indicator present
4396 -- N_Procedure_Specification
4397 -- Sloc points to PROCEDURE
4398 -- Defining_Unit_Name (Node1)
4399 -- Elaboration_Boolean (Node2-Sem)
4400 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4401 -- Generic_Parent (Node5-Sem)
4402 -- Null_Present (Flag13) set for null procedure case (Ada 2005 feature)
4403 -- Must_Override (Flag14) set if overriding indicator present
4404 -- Must_Not_Override (Flag15) set if not_overriding indicator present
4406 -- Note: overriding indicator is an Ada 2005 feature
4408 ---------------------
4409 -- 6.1 Designator --
4410 ---------------------
4413 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
4415 -- Designators that are simply identifiers or operator symbols appear
4416 -- directly in the tree in this form. The following node is used only
4417 -- in the case where the designator has a parent unit name component.
4420 -- Sloc points to period
4421 -- Name (Node2) holds the parent unit name. Note that this is always
4422 -- non-Empty, since this node is only used for the case where a
4423 -- parent library unit package name is present.
4424 -- Identifier (Node1)
4426 -- Note that the identifier can also be an operator symbol here
4428 ------------------------------
4429 -- 6.1 Defining Designator --
4430 ------------------------------
4432 -- DEFINING_DESIGNATOR ::=
4433 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
4435 -------------------------------------
4436 -- 6.1 Defining Program Unit Name --
4437 -------------------------------------
4439 -- DEFINING_PROGRAM_UNIT_NAME ::=
4440 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
4442 -- The parent unit name is present only in the case of a child unit
4443 -- name (permissible only for Ada 95 for a library level unit, i.e.
4444 -- a unit at scope level one). If no such name is present, the defining
4445 -- program unit name is represented simply as the defining identifier.
4446 -- In the child unit case, the following node is used to represent the
4449 -- N_Defining_Program_Unit_Name
4450 -- Sloc points to period
4451 -- Name (Node2) holds the parent unit name. Note that this is always
4452 -- non-Empty, since this node is only used for the case where a
4453 -- parent unit name is present.
4454 -- Defining_Identifier (Node1)
4456 --------------------------
4457 -- 6.1 Operator Symbol --
4458 --------------------------
4460 -- OPERATOR_SYMBOL ::= STRING_LITERAL
4462 -- Note: the fields of the N_Operator_Symbol node are laid out to
4463 -- match the corresponding fields of an N_Character_Literal node. This
4464 -- allows easy conversion of the operator symbol node into a character
4465 -- literal node in the case where a string constant of the form of an
4466 -- operator symbol is scanned out as such, but turns out semantically
4467 -- to be a string literal that is not an operator. For details see
4468 -- Sinfo.CN.Change_Operator_Symbol_To_String_Literal.
4470 -- N_Operator_Symbol
4471 -- Sloc points to literal
4472 -- Chars (Name1) contains the Name_Id for the operator symbol
4473 -- Strval (Str3) Id of string value. This is used if the operator
4474 -- symbol turns out to be a normal string after all.
4475 -- Entity (Node4-Sem)
4476 -- Associated_Node (Node4-Sem)
4477 -- Has_Private_View (Flag11-Sem) set in generic units.
4478 -- Etype (Node5-Sem)
4480 -- Note: the Strval field may be set to No_String for generated
4481 -- operator symbols that are known not to be string literals
4484 -----------------------------------
4485 -- 6.1 Defining Operator Symbol --
4486 -----------------------------------
4488 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
4490 -- A defining operator symbol is an entity, which has additional
4491 -- fields depending on the setting of the Ekind field. These
4492 -- additional fields are defined (and access subprograms declared)
4493 -- in package Einfo.
4495 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
4496 -- are deliberately layed out to match the layout of fields in an
4497 -- ordinary N_Operator_Symbol node allowing for easy alteration of
4498 -- an operator symbol node into a defining operator symbol node.
4499 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
4500 -- for further details.
4502 -- N_Defining_Operator_Symbol
4503 -- Sloc points to literal
4504 -- Chars (Name1) contains the Name_Id for the operator symbol
4505 -- Next_Entity (Node2-Sem)
4506 -- Scope (Node3-Sem)
4507 -- Etype (Node5-Sem)
4509 ----------------------------
4510 -- 6.1 Parameter Profile --
4511 ----------------------------
4513 -- PARAMETER_PROFILE ::= [FORMAL_PART]
4515 ---------------------------------------
4516 -- 6.1 Parameter and Result Profile --
4517 ---------------------------------------
4519 -- PARAMETER_AND_RESULT_PROFILE ::=
4520 -- [FORMAL_PART] return [NULL_EXCLUSION] SUBTYPE_MARK
4521 -- | [FORMAL_PART] return ACCESS_DEFINITION
4523 -- There is no explicit node in the tree for a parameter and result
4524 -- profile. Instead the information appears directly in the parent.
4526 ----------------------
4527 -- 6.1 Formal Part --
4528 ----------------------
4531 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
4533 ----------------------------------
4534 -- 6.1 Parameter Specification --
4535 ----------------------------------
4537 -- PARAMETER_SPECIFICATION ::=
4538 -- DEFINING_IDENTIFIER_LIST : [ALIASED] MODE [NULL_EXCLUSION]
4539 -- SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
4540 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
4541 -- [:= DEFAULT_EXPRESSION]
4543 -- Although the syntax allows multiple identifiers in the list, the
4544 -- semantics is as though successive specifications were given with
4545 -- identical type definition and expression components. To simplify
4546 -- semantic processing, the parser represents a multiple declaration
4547 -- case as a sequence of single Specifications, using the More_Ids and
4548 -- Prev_Ids flags to preserve the original source form as described
4549 -- in the section on "Handling of Defining Identifier Lists".
4551 -- ALIASED can only be present in Ada 2012 mode
4553 -- N_Parameter_Specification
4554 -- Sloc points to first identifier
4555 -- Defining_Identifier (Node1)
4556 -- Aliased_Present (Flag4)
4557 -- In_Present (Flag15)
4558 -- Out_Present (Flag17)
4559 -- Null_Exclusion_Present (Flag11)
4560 -- Parameter_Type (Node2) subtype mark or access definition
4561 -- Expression (Node3) (set to Empty if no default expression present)
4562 -- Do_Accessibility_Check (Flag13-Sem)
4563 -- More_Ids (Flag5) (set to False if no more identifiers in list)
4564 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
4565 -- Default_Expression (Node5-Sem)
4571 -- MODE ::= [in] | in out | out
4573 -- There is no explicit node in the tree for the Mode. Instead the
4574 -- In_Present and Out_Present flags are set in the parent node to
4575 -- record the presence of keywords specifying the mode.
4577 --------------------------
4578 -- 6.3 Subprogram Body --
4579 --------------------------
4581 -- SUBPROGRAM_BODY ::=
4582 -- SUBPROGRAM_SPECIFICATION is
4585 -- HANDLED_SEQUENCE_OF_STATEMENTS
4586 -- end [DESIGNATOR];
4588 -- N_Subprogram_Body
4589 -- Sloc points to FUNCTION or PROCEDURE
4590 -- Specification (Node1)
4591 -- Declarations (List2)
4592 -- Handled_Statement_Sequence (Node4)
4593 -- Activation_Chain_Entity (Node3-Sem)
4594 -- Corresponding_Spec (Node5-Sem)
4595 -- Acts_As_Spec (Flag4-Sem)
4596 -- Bad_Is_Detected (Flag15) used only by parser
4597 -- Do_Storage_Check (Flag17-Sem)
4598 -- Has_Pragma_Priority (Flag6-Sem)
4599 -- Is_Protected_Subprogram_Body (Flag7-Sem)
4600 -- Is_Entry_Barrier_Function (Flag8-Sem)
4601 -- Is_Task_Master (Flag5-Sem)
4602 -- Was_Originally_Stub (Flag13-Sem)
4603 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
4604 -- Has_Pragma_CPU (Flag14-Sem)
4606 -------------------------
4607 -- Expression Function --
4608 -------------------------
4610 -- This is an Ada 2012 extension, we put it here for now, to be labeled
4611 -- and put in its proper section when we know exactly where that is!
4613 -- EXPRESSION_FUNCTION ::=
4614 -- FUNCTION SPECIFICATION IS (EXPRESSION);
4616 -- N_Expression_Function
4617 -- Sloc points to FUNCTION
4618 -- Specification (Node1)
4619 -- Expression (Node3)
4620 -- Corresponding_Spec (Node5-Sem)
4622 -----------------------------------
4623 -- 6.4 Procedure Call Statement --
4624 -----------------------------------
4626 -- PROCEDURE_CALL_STATEMENT ::=
4627 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
4629 -- Note: the reason that a procedure call has expression fields is
4630 -- that it semantically resembles an expression, e.g. overloading is
4631 -- allowed and a type is concocted for semantic processing purposes.
4632 -- Certain of these fields, such as Parens are not relevant, but it
4633 -- is easier to just supply all of them together!
4635 -- N_Procedure_Call_Statement
4636 -- Sloc points to first token of name or prefix
4637 -- Name (Node2) stores name or prefix
4638 -- Parameter_Associations (List3) (set to No_List if no
4639 -- actual parameter part)
4640 -- First_Named_Actual (Node4-Sem)
4641 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4642 -- Do_Tag_Check (Flag13-Sem)
4643 -- No_Elaboration_Check (Flag14-Sem)
4644 -- Parameter_List_Truncated (Flag17-Sem)
4645 -- ABE_Is_Certain (Flag18-Sem)
4646 -- plus fields for expression
4648 -- If any IN parameter requires a range check, then the corresponding
4649 -- argument expression has the Do_Range_Check flag set, and the range
4650 -- check is done against the formal type. Note that this argument
4651 -- expression may appear directly in the Parameter_Associations list,
4652 -- or may be a descendent of an N_Parameter_Association node that
4653 -- appears in this list.
4655 ------------------------
4656 -- 6.4 Function Call --
4657 ------------------------
4659 -- FUNCTION_CALL ::=
4660 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
4662 -- Note: the parser may generate an indexed component node or simply
4663 -- a name node instead of a function call node. The semantic pass must
4664 -- correct this misidentification.
4667 -- Sloc points to first token of name or prefix
4668 -- Name (Node2) stores name or prefix
4669 -- Parameter_Associations (List3) (set to No_List if no
4670 -- actual parameter part)
4671 -- First_Named_Actual (Node4-Sem)
4672 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4673 -- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
4674 -- Do_Tag_Check (Flag13-Sem)
4675 -- No_Elaboration_Check (Flag14-Sem)
4676 -- Parameter_List_Truncated (Flag17-Sem)
4677 -- ABE_Is_Certain (Flag18-Sem)
4678 -- plus fields for expression
4680 --------------------------------
4681 -- 6.4 Actual Parameter Part --
4682 --------------------------------
4684 -- ACTUAL_PARAMETER_PART ::=
4685 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
4687 --------------------------------
4688 -- 6.4 Parameter Association --
4689 --------------------------------
4691 -- PARAMETER_ASSOCIATION ::=
4692 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
4694 -- Note: the N_Parameter_Association node is built only if a formal
4695 -- parameter selector name is present, otherwise the parameter
4696 -- association appears in the tree simply as the node for the
4697 -- explicit actual parameter.
4699 -- N_Parameter_Association
4700 -- Sloc points to formal parameter
4701 -- Selector_Name (Node2) (always non-Empty)
4702 -- Explicit_Actual_Parameter (Node3)
4703 -- Next_Named_Actual (Node4-Sem)
4704 -- Is_Accessibility_Actual (Flag13-Sem)
4706 ---------------------------
4707 -- 6.4 Actual Parameter --
4708 ---------------------------
4710 -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
4712 ---------------------------
4713 -- 6.5 Return Statement --
4714 ---------------------------
4716 -- RETURN_STATEMENT ::= return [EXPRESSION]; -- Ada 95
4718 -- In Ada 2005, we have:
4720 -- SIMPLE_RETURN_STATEMENT ::= return [EXPRESSION];
4722 -- EXTENDED_RETURN_STATEMENT ::=
4723 -- return DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
4724 -- [:= EXPRESSION] [do
4725 -- HANDLED_SEQUENCE_OF_STATEMENTS
4728 -- RETURN_SUBTYPE_INDICATION ::= SUBTYPE_INDICATION | ACCESS_DEFINITION
4730 -- So in Ada 2005, RETURN_STATEMENT is no longer a nonterminal, but
4731 -- "return statement" is defined in 6.5 to mean a
4732 -- SIMPLE_RETURN_STATEMENT or an EXTENDED_RETURN_STATEMENT.
4734 -- N_Return_Statement
4735 -- Sloc points to RETURN
4736 -- Return_Statement_Entity (Node5-Sem)
4737 -- Expression (Node3) (set to Empty if no expression present)
4738 -- Storage_Pool (Node1-Sem)
4739 -- Procedure_To_Call (Node2-Sem)
4740 -- Do_Tag_Check (Flag13-Sem)
4741 -- By_Ref (Flag5-Sem)
4742 -- Comes_From_Extended_Return_Statement (Flag18-Sem)
4744 -- N_Return_Statement represents a simple_return_statement, and is
4745 -- renamed to be N_Simple_Return_Statement below. Clients should refer
4746 -- to N_Simple_Return_Statement. We retain N_Return_Statement because
4747 -- that's how gigi knows it. See also renaming of Make_Return_Statement
4748 -- as Make_Simple_Return_Statement in Sem_Util.
4750 -- Note: Return_Statement_Entity points to an E_Return_Statement
4752 -- If a range check is required, then Do_Range_Check is set on the
4753 -- Expression. The check is against the return subtype of the function.
4755 -- N_Extended_Return_Statement
4756 -- Sloc points to RETURN
4757 -- Return_Statement_Entity (Node5-Sem)
4758 -- Return_Object_Declarations (List3)
4759 -- Handled_Statement_Sequence (Node4) (set to Empty if not present)
4760 -- Storage_Pool (Node1-Sem)
4761 -- Procedure_To_Call (Node2-Sem)
4762 -- Do_Tag_Check (Flag13-Sem)
4763 -- By_Ref (Flag5-Sem)
4765 -- Note: Return_Statement_Entity points to an E_Return_Statement.
4767 -- Note that Return_Object_Declarations is a list containing the
4768 -- N_Object_Declaration -- see comment on this field above.
4770 -- The declared object will have Is_Return_Object = True.
4772 -- There is no such syntactic category as return_object_declaration
4773 -- in the RM. Return_Object_Declarations represents this portion of
4774 -- the syntax for EXTENDED_RETURN_STATEMENT:
4775 -- DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
4778 -- There are two entities associated with an extended_return_statement:
4779 -- the Return_Statement_Entity represents the statement itself, and the
4780 -- Defining_Identifier of the Object_Declaration in
4781 -- Return_Object_Declarations represents the object being
4782 -- returned. N_Simple_Return_Statement has only the former.
4784 ------------------------------
4785 -- 7.1 Package Declaration --
4786 ------------------------------
4788 -- PACKAGE_DECLARATION ::=
4789 -- PACKAGE_SPECIFICATION;
4791 -- Note: the activation chain entity for a package spec is used for
4792 -- all tasks declared in the package spec, or in the package body.
4794 -- N_Package_Declaration
4795 -- Sloc points to PACKAGE
4796 -- Specification (Node1)
4797 -- Corresponding_Body (Node5-Sem)
4798 -- Parent_Spec (Node4-Sem)
4799 -- Activation_Chain_Entity (Node3-Sem)
4801 --------------------------------
4802 -- 7.1 Package Specification --
4803 --------------------------------
4805 -- PACKAGE_SPECIFICATION ::=
4806 -- package DEFINING_PROGRAM_UNIT_NAME
4807 -- [ASPECT_SPECIFICATIONS]
4809 -- {BASIC_DECLARATIVE_ITEM}
4811 -- {BASIC_DECLARATIVE_ITEM}]
4812 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
4814 -- N_Package_Specification
4815 -- Sloc points to PACKAGE
4816 -- Defining_Unit_Name (Node1)
4817 -- Visible_Declarations (List2)
4818 -- Private_Declarations (List3) (set to No_List if no private
4820 -- End_Label (Node4)
4821 -- Generic_Parent (Node5-Sem)
4822 -- Limited_View_Installed (Flag18-Sem)
4824 -----------------------
4825 -- 7.1 Package Body --
4826 -----------------------
4829 -- package body DEFINING_PROGRAM_UNIT_NAME
4830 -- [ASPECT_SPECIFICATIONS]
4834 -- HANDLED_SEQUENCE_OF_STATEMENTS]
4835 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
4838 -- Sloc points to PACKAGE
4839 -- Defining_Unit_Name (Node1)
4840 -- Declarations (List2)
4841 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
4842 -- Corresponding_Spec (Node5-Sem)
4843 -- Was_Originally_Stub (Flag13-Sem)
4845 -- Note: if a source level package does not contain a handled sequence
4846 -- of statements, then the parser supplies a dummy one with a null
4847 -- sequence of statements. Comes_From_Source will be False in this
4848 -- constructed sequence. The reason we need this is for the End_Label
4849 -- field in the HSS.
4851 -----------------------------------
4852 -- 7.4 Private Type Declaration --
4853 -----------------------------------
4855 -- PRIVATE_TYPE_DECLARATION ::=
4856 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
4857 -- is [[abstract] tagged] [limited] private;
4859 -- Note: TAGGED is not permitted in Ada 83 mode
4861 -- N_Private_Type_Declaration
4862 -- Sloc points to TYPE
4863 -- Defining_Identifier (Node1)
4864 -- Discriminant_Specifications (List4) (set to No_List if no
4865 -- discriminant part)
4866 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4867 -- Abstract_Present (Flag4)
4868 -- Tagged_Present (Flag15)
4869 -- Limited_Present (Flag17)
4871 ----------------------------------------
4872 -- 7.4 Private Extension Declaration --
4873 ----------------------------------------
4875 -- PRIVATE_EXTENSION_DECLARATION ::=
4876 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
4877 -- [abstract] [limited | synchronized]
4878 -- new ancestor_SUBTYPE_INDICATION [and INTERFACE_LIST]
4881 -- Note: LIMITED, and private extension declarations are not allowed
4884 -- N_Private_Extension_Declaration
4885 -- Sloc points to TYPE
4886 -- Defining_Identifier (Node1)
4887 -- Discriminant_Specifications (List4) (set to No_List if no
4888 -- discriminant part)
4889 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4890 -- Abstract_Present (Flag4)
4891 -- Limited_Present (Flag17)
4892 -- Synchronized_Present (Flag7)
4893 -- Subtype_Indication (Node5)
4894 -- Interface_List (List2) (set to No_List if none)
4896 ---------------------
4897 -- 8.4 Use Clause --
4898 ---------------------
4900 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
4902 -----------------------------
4903 -- 8.4 Use Package Clause --
4904 -----------------------------
4906 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
4908 -- N_Use_Package_Clause
4909 -- Sloc points to USE
4911 -- Next_Use_Clause (Node3-Sem)
4912 -- Hidden_By_Use_Clause (Elist4-Sem)
4914 --------------------------
4915 -- 8.4 Use Type Clause --
4916 --------------------------
4918 -- USE_TYPE_CLAUSE ::= use [ALL] type SUBTYPE_MARK {, SUBTYPE_MARK};
4920 -- Note: use type clause is not permitted in Ada 83 mode
4922 -- Note: the ALL keyword can appear only in Ada 2012 mode
4924 -- N_Use_Type_Clause
4925 -- Sloc points to USE
4926 -- Subtype_Marks (List2)
4927 -- Next_Use_Clause (Node3-Sem)
4928 -- Hidden_By_Use_Clause (Elist4-Sem)
4929 -- Used_Operations (Elist5-Sem)
4930 -- All_Present (Flag15)
4932 -------------------------------
4933 -- 8.5 Renaming Declaration --
4934 -------------------------------
4936 -- RENAMING_DECLARATION ::=
4937 -- OBJECT_RENAMING_DECLARATION
4938 -- | EXCEPTION_RENAMING_DECLARATION
4939 -- | PACKAGE_RENAMING_DECLARATION
4940 -- | SUBPROGRAM_RENAMING_DECLARATION
4941 -- | GENERIC_RENAMING_DECLARATION
4943 --------------------------------------
4944 -- 8.5 Object Renaming Declaration --
4945 --------------------------------------
4947 -- OBJECT_RENAMING_DECLARATION ::=
4948 -- DEFINING_IDENTIFIER :
4949 -- [NULL_EXCLUSION] SUBTYPE_MARK renames object_NAME;
4950 -- | DEFINING_IDENTIFIER :
4951 -- ACCESS_DEFINITION renames object_NAME;
4953 -- Note: Access_Definition is an optional field that gives support to
4954 -- Ada 2005 (AI-230). The parser generates nodes that have either the
4955 -- Subtype_Indication field or else the Access_Definition field.
4957 -- N_Object_Renaming_Declaration
4958 -- Sloc points to first identifier
4959 -- Defining_Identifier (Node1)
4960 -- Null_Exclusion_Present (Flag11) (set to False if not present)
4961 -- Subtype_Mark (Node4) (set to Empty if not present)
4962 -- Access_Definition (Node3) (set to Empty if not present)
4964 -- Corresponding_Generic_Association (Node5-Sem)
4966 -----------------------------------------
4967 -- 8.5 Exception Renaming Declaration --
4968 -----------------------------------------
4970 -- EXCEPTION_RENAMING_DECLARATION ::=
4971 -- DEFINING_IDENTIFIER : exception renames exception_NAME;
4973 -- N_Exception_Renaming_Declaration
4974 -- Sloc points to first identifier
4975 -- Defining_Identifier (Node1)
4978 ---------------------------------------
4979 -- 8.5 Package Renaming Declaration --
4980 ---------------------------------------
4982 -- PACKAGE_RENAMING_DECLARATION ::=
4983 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME;
4985 -- N_Package_Renaming_Declaration
4986 -- Sloc points to PACKAGE
4987 -- Defining_Unit_Name (Node1)
4989 -- Parent_Spec (Node4-Sem)
4991 ------------------------------------------
4992 -- 8.5 Subprogram Renaming Declaration --
4993 ------------------------------------------
4995 -- SUBPROGRAM_RENAMING_DECLARATION ::=
4996 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME;
4998 -- N_Subprogram_Renaming_Declaration
4999 -- Sloc points to RENAMES
5000 -- Specification (Node1)
5002 -- Parent_Spec (Node4-Sem)
5003 -- Corresponding_Spec (Node5-Sem)
5004 -- Corresponding_Formal_Spec (Node3-Sem)
5005 -- From_Default (Flag6-Sem)
5007 -----------------------------------------
5008 -- 8.5.5 Generic Renaming Declaration --
5009 -----------------------------------------
5011 -- GENERIC_RENAMING_DECLARATION ::=
5012 -- generic package DEFINING_PROGRAM_UNIT_NAME
5013 -- renames generic_package_NAME
5014 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
5015 -- renames generic_procedure_NAME
5016 -- | generic function DEFINING_PROGRAM_UNIT_NAME
5017 -- renames generic_function_NAME
5019 -- N_Generic_Package_Renaming_Declaration
5020 -- Sloc points to GENERIC
5021 -- Defining_Unit_Name (Node1)
5023 -- Parent_Spec (Node4-Sem)
5025 -- N_Generic_Procedure_Renaming_Declaration
5026 -- Sloc points to GENERIC
5027 -- Defining_Unit_Name (Node1)
5029 -- Parent_Spec (Node4-Sem)
5031 -- N_Generic_Function_Renaming_Declaration
5032 -- Sloc points to GENERIC
5033 -- Defining_Unit_Name (Node1)
5035 -- Parent_Spec (Node4-Sem)
5037 --------------------------------
5038 -- 9.1 Task Type Declaration --
5039 --------------------------------
5041 -- TASK_TYPE_DECLARATION ::=
5042 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
5043 -- [ASPECT_SPECIFICATIONS]
5044 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
5046 -- N_Task_Type_Declaration
5047 -- Sloc points to TASK
5048 -- Defining_Identifier (Node1)
5049 -- Discriminant_Specifications (List4) (set to No_List if no
5050 -- discriminant part)
5051 -- Interface_List (List2) (set to No_List if none)
5052 -- Task_Definition (Node3) (set to Empty if not present)
5053 -- Corresponding_Body (Node5-Sem)
5055 ----------------------------------
5056 -- 9.1 Single Task Declaration --
5057 ----------------------------------
5059 -- SINGLE_TASK_DECLARATION ::=
5060 -- task DEFINING_IDENTIFIER
5061 -- [ASPECT_SPECIFICATIONS]
5062 -- [is [new INTERFACE_LIST with] TASK_DEFINITION];
5064 -- N_Single_Task_Declaration
5065 -- Sloc points to TASK
5066 -- Defining_Identifier (Node1)
5067 -- Interface_List (List2) (set to No_List if none)
5068 -- Task_Definition (Node3) (set to Empty if not present)
5070 --------------------------
5071 -- 9.1 Task Definition --
5072 --------------------------
5074 -- TASK_DEFINITION ::=
5078 -- end [task_IDENTIFIER]
5080 -- Note: as a result of semantic analysis, the list of task items can
5081 -- include implicit type declarations resulting from entry families.
5083 -- N_Task_Definition
5084 -- Sloc points to first token of task definition
5085 -- Visible_Declarations (List2)
5086 -- Private_Declarations (List3) (set to No_List if no private part)
5087 -- End_Label (Node4)
5088 -- Has_Pragma_Priority (Flag6-Sem)
5089 -- Has_Storage_Size_Pragma (Flag5-Sem)
5090 -- Has_Task_Info_Pragma (Flag7-Sem)
5091 -- Has_Task_Name_Pragma (Flag8-Sem)
5092 -- Has_Relative_Deadline_Pragma (Flag9-Sem)
5093 -- Has_Pragma_CPU (Flag14-Sem)
5094 -- Has_Pragma_Dispatching_Domain (Flag15-Sem)
5096 --------------------
5098 --------------------
5100 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
5102 --------------------
5104 --------------------
5107 -- task body task_DEFINING_IDENTIFIER
5108 -- [ASPECT_SPECIFICATIONS]
5112 -- HANDLED_SEQUENCE_OF_STATEMENTS
5113 -- end [task_IDENTIFIER];
5115 -- Gigi restriction: This node never appears
5118 -- Sloc points to TASK
5119 -- Defining_Identifier (Node1)
5120 -- Declarations (List2)
5121 -- Handled_Statement_Sequence (Node4)
5122 -- Is_Task_Master (Flag5-Sem)
5123 -- Activation_Chain_Entity (Node3-Sem)
5124 -- Corresponding_Spec (Node5-Sem)
5125 -- Was_Originally_Stub (Flag13-Sem)
5127 -------------------------------------
5128 -- 9.4 Protected Type Declaration --
5129 -------------------------------------
5131 -- PROTECTED_TYPE_DECLARATION ::=
5132 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
5133 -- [ASPECT_SPECIFICATIONS]
5134 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
5136 -- Note: protected type declarations are not permitted in Ada 83 mode
5138 -- N_Protected_Type_Declaration
5139 -- Sloc points to PROTECTED
5140 -- Defining_Identifier (Node1)
5141 -- Discriminant_Specifications (List4) (set to No_List if no
5142 -- discriminant part)
5143 -- Interface_List (List2) (set to No_List if none)
5144 -- Protected_Definition (Node3)
5145 -- Corresponding_Body (Node5-Sem)
5147 ---------------------------------------
5148 -- 9.4 Single Protected Declaration --
5149 ---------------------------------------
5151 -- SINGLE_PROTECTED_DECLARATION ::=
5152 -- protected DEFINING_IDENTIFIER
5153 -- [ASPECT_SPECIFICATIONS]
5154 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
5156 -- Note: single protected declarations are not allowed in Ada 83 mode
5158 -- N_Single_Protected_Declaration
5159 -- Sloc points to PROTECTED
5160 -- Defining_Identifier (Node1)
5161 -- Interface_List (List2) (set to No_List if none)
5162 -- Protected_Definition (Node3)
5164 -------------------------------
5165 -- 9.4 Protected Definition --
5166 -------------------------------
5168 -- PROTECTED_DEFINITION ::=
5169 -- {PROTECTED_OPERATION_DECLARATION}
5171 -- {PROTECTED_ELEMENT_DECLARATION}]
5172 -- end [protected_IDENTIFIER]
5174 -- N_Protected_Definition
5175 -- Sloc points to first token of protected definition
5176 -- Visible_Declarations (List2)
5177 -- Private_Declarations (List3) (set to No_List if no private part)
5178 -- End_Label (Node4)
5179 -- Has_Pragma_Priority (Flag6-Sem)
5181 ------------------------------------------
5182 -- 9.4 Protected Operation Declaration --
5183 ------------------------------------------
5185 -- PROTECTED_OPERATION_DECLARATION ::=
5186 -- SUBPROGRAM_DECLARATION
5187 -- | ENTRY_DECLARATION
5188 -- | REPRESENTATION_CLAUSE
5190 ----------------------------------------
5191 -- 9.4 Protected Element Declaration --
5192 ----------------------------------------
5194 -- PROTECTED_ELEMENT_DECLARATION ::=
5195 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
5197 -------------------------
5198 -- 9.4 Protected Body --
5199 -------------------------
5201 -- PROTECTED_BODY ::=
5202 -- protected body DEFINING_IDENTIFIER
5203 -- [ASPECT_SPECIFICATIONS];
5205 -- {PROTECTED_OPERATION_ITEM}
5206 -- end [protected_IDENTIFIER];
5208 -- Note: protected bodies are not allowed in Ada 83 mode
5210 -- Gigi restriction: This node never appears
5213 -- Sloc points to PROTECTED
5214 -- Defining_Identifier (Node1)
5215 -- Declarations (List2) protected operation items (and pragmas)
5216 -- End_Label (Node4)
5217 -- Corresponding_Spec (Node5-Sem)
5218 -- Was_Originally_Stub (Flag13-Sem)
5220 -----------------------------------
5221 -- 9.4 Protected Operation Item --
5222 -----------------------------------
5224 -- PROTECTED_OPERATION_ITEM ::=
5225 -- SUBPROGRAM_DECLARATION
5226 -- | SUBPROGRAM_BODY
5228 -- | REPRESENTATION_CLAUSE
5230 ------------------------------
5231 -- 9.5.2 Entry Declaration --
5232 ------------------------------
5234 -- ENTRY_DECLARATION ::=
5235 -- [[not] overriding]
5236 -- entry DEFINING_IDENTIFIER
5237 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE;
5239 -- N_Entry_Declaration
5240 -- Sloc points to ENTRY
5241 -- Defining_Identifier (Node1)
5242 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
5243 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5244 -- Corresponding_Body (Node5-Sem)
5245 -- Must_Override (Flag14) set if overriding indicator present
5246 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5248 -- Note: overriding indicator is an Ada 2005 feature
5250 -----------------------------
5251 -- 9.5.2 Accept statement --
5252 -----------------------------
5254 -- ACCEPT_STATEMENT ::=
5255 -- accept entry_DIRECT_NAME
5256 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
5257 -- HANDLED_SEQUENCE_OF_STATEMENTS
5258 -- end [entry_IDENTIFIER]];
5260 -- Gigi restriction: This node never appears
5262 -- Note: there are no explicit declarations allowed in an accept
5263 -- statement. However, the implicit declarations for any statement
5264 -- identifiers (labels and block/loop identifiers) are declarations
5265 -- that belong logically to the accept statement, and that is why
5266 -- there is a Declarations field in this node.
5268 -- N_Accept_Statement
5269 -- Sloc points to ACCEPT
5270 -- Entry_Direct_Name (Node1)
5271 -- Entry_Index (Node5) (set to Empty if not present)
5272 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5273 -- Handled_Statement_Sequence (Node4)
5274 -- Declarations (List2) (set to No_List if no declarations)
5276 ------------------------
5277 -- 9.5.2 Entry Index --
5278 ------------------------
5280 -- ENTRY_INDEX ::= EXPRESSION
5282 -----------------------
5283 -- 9.5.2 Entry Body --
5284 -----------------------
5287 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
5290 -- HANDLED_SEQUENCE_OF_STATEMENTS
5291 -- end [entry_IDENTIFIER];
5293 -- ENTRY_BARRIER ::= when CONDITION
5295 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
5296 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
5297 -- too full (it would otherwise have too many fields)
5299 -- Gigi restriction: This node never appears
5302 -- Sloc points to ENTRY
5303 -- Defining_Identifier (Node1)
5304 -- Entry_Body_Formal_Part (Node5)
5305 -- Declarations (List2)
5306 -- Handled_Statement_Sequence (Node4)
5307 -- Activation_Chain_Entity (Node3-Sem)
5309 -----------------------------------
5310 -- 9.5.2 Entry Body Formal Part --
5311 -----------------------------------
5313 -- ENTRY_BODY_FORMAL_PART ::=
5314 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
5316 -- Note that an entry body formal part node is present even if it is
5317 -- empty. This reflects the grammar, in which it is the components of
5318 -- the entry body formal part that are optional, not the entry body
5319 -- formal part itself. Also this means that the barrier condition
5320 -- always has somewhere to be stored.
5322 -- Gigi restriction: This node never appears
5324 -- N_Entry_Body_Formal_Part
5325 -- Sloc points to first token
5326 -- Entry_Index_Specification (Node4) (set to Empty if not present)
5327 -- Parameter_Specifications (List3) (set to No_List if no formal part)
5328 -- Condition (Node1) from entry barrier of entry body
5330 --------------------------
5331 -- 9.5.2 Entry Barrier --
5332 --------------------------
5334 -- ENTRY_BARRIER ::= when CONDITION
5336 --------------------------------------
5337 -- 9.5.2 Entry Index Specification --
5338 --------------------------------------
5340 -- ENTRY_INDEX_SPECIFICATION ::=
5341 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
5343 -- Gigi restriction: This node never appears
5345 -- N_Entry_Index_Specification
5346 -- Sloc points to FOR
5347 -- Defining_Identifier (Node1)
5348 -- Discrete_Subtype_Definition (Node4)
5350 ---------------------------------
5351 -- 9.5.3 Entry Call Statement --
5352 ---------------------------------
5354 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
5356 -- The parser may generate a procedure call for this construct. The
5357 -- semantic pass must correct this misidentification where needed.
5359 -- Gigi restriction: This node never appears
5361 -- N_Entry_Call_Statement
5362 -- Sloc points to first token of name
5364 -- Parameter_Associations (List3) (set to No_List if no
5365 -- actual parameter part)
5366 -- First_Named_Actual (Node4-Sem)
5368 ------------------------------
5369 -- 9.5.4 Requeue Statement --
5370 ------------------------------
5372 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
5374 -- Note: requeue statements are not permitted in Ada 83 mode
5376 -- Gigi restriction: This node never appears
5378 -- N_Requeue_Statement
5379 -- Sloc points to REQUEUE
5381 -- Abort_Present (Flag15)
5383 --------------------------
5384 -- 9.6 Delay Statement --
5385 --------------------------
5387 -- DELAY_STATEMENT ::=
5388 -- DELAY_UNTIL_STATEMENT
5389 -- | DELAY_RELATIVE_STATEMENT
5391 --------------------------------
5392 -- 9.6 Delay Until Statement --
5393 --------------------------------
5395 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
5397 -- Note: delay until statements are not permitted in Ada 83 mode
5399 -- Gigi restriction: This node never appears
5401 -- N_Delay_Until_Statement
5402 -- Sloc points to DELAY
5403 -- Expression (Node3)
5405 -----------------------------------
5406 -- 9.6 Delay Relative Statement --
5407 -----------------------------------
5409 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
5411 -- Gigi restriction: This node never appears
5413 -- N_Delay_Relative_Statement
5414 -- Sloc points to DELAY
5415 -- Expression (Node3)
5417 ---------------------------
5418 -- 9.7 Select Statement --
5419 ---------------------------
5421 -- SELECT_STATEMENT ::=
5423 -- | TIMED_ENTRY_CALL
5424 -- | CONDITIONAL_ENTRY_CALL
5425 -- | ASYNCHRONOUS_SELECT
5427 -----------------------------
5428 -- 9.7.1 Selective Accept --
5429 -----------------------------
5431 -- SELECTIVE_ACCEPT ::=
5434 -- SELECT_ALTERNATIVE
5437 -- SELECT_ALTERNATIVE}
5439 -- SEQUENCE_OF_STATEMENTS]
5442 -- Gigi restriction: This node never appears
5444 -- Note: the guard expression, if present, appears in the node for
5445 -- the select alternative.
5447 -- N_Selective_Accept
5448 -- Sloc points to SELECT
5449 -- Select_Alternatives (List1)
5450 -- Else_Statements (List4) (set to No_List if no else part)
5456 -- GUARD ::= when CONDITION =>
5458 -- As noted above, the CONDITION that is part of a GUARD is included
5459 -- in the node for the select alternative for convenience.
5461 -------------------------------
5462 -- 9.7.1 Select Alternative --
5463 -------------------------------
5465 -- SELECT_ALTERNATIVE ::=
5466 -- ACCEPT_ALTERNATIVE
5467 -- | DELAY_ALTERNATIVE
5468 -- | TERMINATE_ALTERNATIVE
5470 -------------------------------
5471 -- 9.7.1 Accept Alternative --
5472 -------------------------------
5474 -- ACCEPT_ALTERNATIVE ::=
5475 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
5477 -- Gigi restriction: This node never appears
5479 -- N_Accept_Alternative
5480 -- Sloc points to ACCEPT
5481 -- Accept_Statement (Node2)
5482 -- Condition (Node1) from the guard (set to Empty if no guard present)
5483 -- Statements (List3) (set to Empty_List if no statements)
5484 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5485 -- Accept_Handler_Records (List5-Sem)
5487 ------------------------------
5488 -- 9.7.1 Delay Alternative --
5489 ------------------------------
5491 -- DELAY_ALTERNATIVE ::=
5492 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
5494 -- Gigi restriction: This node never appears
5496 -- N_Delay_Alternative
5497 -- Sloc points to DELAY
5498 -- Delay_Statement (Node2)
5499 -- Condition (Node1) from the guard (set to Empty if no guard present)
5500 -- Statements (List3) (set to Empty_List if no statements)
5501 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5503 ----------------------------------
5504 -- 9.7.1 Terminate Alternative --
5505 ----------------------------------
5507 -- TERMINATE_ALTERNATIVE ::= terminate;
5509 -- Gigi restriction: This node never appears
5511 -- N_Terminate_Alternative
5512 -- Sloc points to TERMINATE
5513 -- Condition (Node1) from the guard (set to Empty if no guard present)
5514 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5515 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
5517 -----------------------------
5518 -- 9.7.2 Timed Entry Call --
5519 -----------------------------
5521 -- TIMED_ENTRY_CALL ::=
5523 -- ENTRY_CALL_ALTERNATIVE
5525 -- DELAY_ALTERNATIVE
5528 -- Gigi restriction: This node never appears
5530 -- N_Timed_Entry_Call
5531 -- Sloc points to SELECT
5532 -- Entry_Call_Alternative (Node1)
5533 -- Delay_Alternative (Node4)
5535 -----------------------------------
5536 -- 9.7.2 Entry Call Alternative --
5537 -----------------------------------
5539 -- ENTRY_CALL_ALTERNATIVE ::=
5540 -- PROCEDURE_OR_ENTRY_CALL [SEQUENCE_OF_STATEMENTS]
5542 -- PROCEDURE_OR_ENTRY_CALL ::=
5543 -- PROCEDURE_CALL_STATEMENT | ENTRY_CALL_STATEMENT
5545 -- Gigi restriction: This node never appears
5547 -- N_Entry_Call_Alternative
5548 -- Sloc points to first token of entry call statement
5549 -- Entry_Call_Statement (Node1)
5550 -- Statements (List3) (set to Empty_List if no statements)
5551 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5553 -----------------------------------
5554 -- 9.7.3 Conditional Entry Call --
5555 -----------------------------------
5557 -- CONDITIONAL_ENTRY_CALL ::=
5559 -- ENTRY_CALL_ALTERNATIVE
5561 -- SEQUENCE_OF_STATEMENTS
5564 -- Gigi restriction: This node never appears
5566 -- N_Conditional_Entry_Call
5567 -- Sloc points to SELECT
5568 -- Entry_Call_Alternative (Node1)
5569 -- Else_Statements (List4)
5571 --------------------------------
5572 -- 9.7.4 Asynchronous Select --
5573 --------------------------------
5575 -- ASYNCHRONOUS_SELECT ::=
5577 -- TRIGGERING_ALTERNATIVE
5582 -- Note: asynchronous select is not permitted in Ada 83 mode
5584 -- Gigi restriction: This node never appears
5586 -- N_Asynchronous_Select
5587 -- Sloc points to SELECT
5588 -- Triggering_Alternative (Node1)
5589 -- Abortable_Part (Node2)
5591 -----------------------------------
5592 -- 9.7.4 Triggering Alternative --
5593 -----------------------------------
5595 -- TRIGGERING_ALTERNATIVE ::=
5596 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
5598 -- Gigi restriction: This node never appears
5600 -- N_Triggering_Alternative
5601 -- Sloc points to first token of triggering statement
5602 -- Triggering_Statement (Node1)
5603 -- Statements (List3) (set to Empty_List if no statements)
5604 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5606 ---------------------------------
5607 -- 9.7.4 Triggering Statement --
5608 ---------------------------------
5610 -- TRIGGERING_STATEMENT ::= PROCEDURE_OR_ENTRY_CALL | DELAY_STATEMENT
5612 ---------------------------
5613 -- 9.7.4 Abortable Part --
5614 ---------------------------
5616 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
5618 -- Gigi restriction: This node never appears
5621 -- Sloc points to ABORT
5622 -- Statements (List3)
5624 --------------------------
5625 -- 9.8 Abort Statement --
5626 --------------------------
5628 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
5630 -- Gigi restriction: This node never appears
5632 -- N_Abort_Statement
5633 -- Sloc points to ABORT
5636 -------------------------
5637 -- 10.1.1 Compilation --
5638 -------------------------
5640 -- COMPILATION ::= {COMPILATION_UNIT}
5642 -- There is no explicit node in the tree for a compilation, since in
5643 -- general the compiler is processing only a single compilation unit
5644 -- at a time. It is possible to parse multiple units in syntax check
5645 -- only mode, but the trees are discarded in that case.
5647 ------------------------------
5648 -- 10.1.1 Compilation Unit --
5649 ------------------------------
5651 -- COMPILATION_UNIT ::=
5652 -- CONTEXT_CLAUSE LIBRARY_ITEM
5653 -- | CONTEXT_CLAUSE SUBUNIT
5655 -- The N_Compilation_Unit node itself represents the above syntax.
5656 -- However, there are two additional items not reflected in the above
5657 -- syntax. First we have the global declarations that are added by the
5658 -- code generator. These are outer level declarations (so they cannot
5659 -- be represented as being inside the units). An example is the wrapper
5660 -- subprograms that are created to do ABE checking. As always a list of
5661 -- declarations can contain actions as well (i.e. statements), and such
5662 -- statements are executed as part of the elaboration of the unit. Note
5663 -- that all such declarations are elaborated before the library unit.
5665 -- Similarly, certain actions need to be elaborated at the completion
5666 -- of elaboration of the library unit (notably the statement that sets
5667 -- the Boolean flag indicating that elaboration is complete).
5669 -- The third item not reflected in the syntax is pragmas that appear
5670 -- after the compilation unit. As always pragmas are a problem since
5671 -- they are not part of the formal syntax, but can be stuck into the
5672 -- source following a set of ad hoc rules, and we have to find an ad
5673 -- hoc way of sticking them into the tree. For pragmas that appear
5674 -- before the library unit, we just consider them to be part of the
5675 -- context clause, and pragmas can appear in the Context_Items list
5676 -- of the compilation unit. However, pragmas can also appear after
5677 -- the library item.
5679 -- To deal with all these problems, we create an auxiliary node for
5680 -- a compilation unit, referenced from the N_Compilation_Unit node,
5681 -- that contains these items.
5683 -- N_Compilation_Unit
5684 -- Sloc points to first token of defining unit name
5685 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
5686 -- Context_Items (List1) context items and pragmas preceding unit
5687 -- Private_Present (Flag15) set if library unit has private keyword
5688 -- Unit (Node2) library item or subunit
5689 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
5690 -- Has_No_Elaboration_Code (Flag17-Sem)
5691 -- Body_Required (Flag13-Sem) set for spec if body is required
5692 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
5693 -- Context_Pending (Flag16-Sem)
5694 -- First_Inlined_Subprogram (Node3-Sem)
5695 -- Has_Pragma_Suppress_All (Flag14-Sem)
5697 -- N_Compilation_Unit_Aux
5698 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
5699 -- Declarations (List2) (set to No_List if no global declarations)
5700 -- Actions (List1) (set to No_List if no actions)
5701 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
5702 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
5703 -- Default_Storage_Pool (Node3-Sem)
5705 --------------------------
5706 -- 10.1.1 Library Item --
5707 --------------------------
5710 -- [private] LIBRARY_UNIT_DECLARATION
5711 -- | LIBRARY_UNIT_BODY
5712 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
5714 -- Note: PRIVATE is not allowed in Ada 83 mode
5716 -- There is no explicit node in the tree for library item, instead
5717 -- the declaration or body, and the flag for private if present,
5718 -- appear in the N_Compilation_Unit node.
5720 --------------------------------------
5721 -- 10.1.1 Library Unit Declaration --
5722 --------------------------------------
5724 -- LIBRARY_UNIT_DECLARATION ::=
5725 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
5726 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
5728 -----------------------------------------------
5729 -- 10.1.1 Library Unit Renaming Declaration --
5730 -----------------------------------------------
5732 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
5733 -- PACKAGE_RENAMING_DECLARATION
5734 -- | GENERIC_RENAMING_DECLARATION
5735 -- | SUBPROGRAM_RENAMING_DECLARATION
5737 -------------------------------
5738 -- 10.1.1 Library unit body --
5739 -------------------------------
5741 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
5743 ------------------------------
5744 -- 10.1.1 Parent Unit Name --
5745 ------------------------------
5747 -- PARENT_UNIT_NAME ::= NAME
5749 ----------------------------
5750 -- 10.1.2 Context clause --
5751 ----------------------------
5753 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
5755 -- The context clause can include pragmas, and any pragmas that appear
5756 -- before the context clause proper (i.e. all configuration pragmas,
5757 -- also appear at the front of this list).
5759 --------------------------
5760 -- 10.1.2 Context_Item --
5761 --------------------------
5763 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
5765 -------------------------
5766 -- 10.1.2 With clause --
5767 -------------------------
5770 -- with library_unit_NAME {,library_unit_NAME};
5772 -- A separate With clause is built for each name, so that we have
5773 -- a Corresponding_Spec field for each with'ed spec. The flags
5774 -- First_Name and Last_Name are used to reconstruct the exact
5775 -- source form. When a list of names appears in one with clause,
5776 -- the first name in the list has First_Name set, and the last
5777 -- has Last_Name set. If the with clause has only one name, then
5778 -- both of the flags First_Name and Last_Name are set in this name.
5780 -- Note: in the case of implicit with's that are installed by the
5781 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
5782 -- set to Standard_Location, but it is incorrect to test the Sloc
5783 -- to find out if a with clause is implicit, test the flag instead.
5786 -- Sloc points to first token of library unit name
5787 -- Withed_Body (Node1-Sem)
5789 -- Next_Implicit_With (Node3-Sem)
5790 -- Library_Unit (Node4-Sem)
5791 -- Corresponding_Spec (Node5-Sem)
5792 -- First_Name (Flag5) (set to True if first name or only one name)
5793 -- Last_Name (Flag6) (set to True if last name or only one name)
5794 -- Context_Installed (Flag13-Sem)
5795 -- Elaborate_Present (Flag4-Sem)
5796 -- Elaborate_All_Present (Flag14-Sem)
5797 -- Elaborate_All_Desirable (Flag9-Sem)
5798 -- Elaborate_Desirable (Flag11-Sem)
5799 -- Private_Present (Flag15) set if with_clause has private keyword
5800 -- Implicit_With (Flag16-Sem)
5801 -- Limited_Present (Flag17) set if LIMITED is present
5802 -- Limited_View_Installed (Flag18-Sem)
5803 -- Unreferenced_In_Spec (Flag7-Sem)
5804 -- No_Entities_Ref_In_Spec (Flag8-Sem)
5806 -- Note: Limited_Present and Limited_View_Installed give support to
5807 -- Ada 2005 (AI-50217).
5808 -- Similarly, Private_Present gives support to AI-50262.
5810 ----------------------
5811 -- With_Type clause --
5812 ----------------------
5814 -- This is a GNAT extension, used to implement mutually recursive
5815 -- types declared in different packages.
5816 -- Note: this is now obsolete. The functionality of this construct
5817 -- is now implemented by the Ada 2005 Limited_with_Clause.
5819 ---------------------
5820 -- 10.2 Body stub --
5821 ---------------------
5824 -- SUBPROGRAM_BODY_STUB
5825 -- | PACKAGE_BODY_STUB
5827 -- | PROTECTED_BODY_STUB
5829 ----------------------------------
5830 -- 10.1.3 Subprogram Body Stub --
5831 ----------------------------------
5833 -- SUBPROGRAM_BODY_STUB ::=
5834 -- SUBPROGRAM_SPECIFICATION is separate;
5836 -- N_Subprogram_Body_Stub
5837 -- Sloc points to FUNCTION or PROCEDURE
5838 -- Specification (Node1)
5839 -- Library_Unit (Node4-Sem) points to the subunit
5840 -- Corresponding_Body (Node5-Sem)
5842 -------------------------------
5843 -- 10.1.3 Package Body Stub --
5844 -------------------------------
5846 -- PACKAGE_BODY_STUB ::=
5847 -- package body DEFINING_IDENTIFIER is separate;
5849 -- N_Package_Body_Stub
5850 -- Sloc points to PACKAGE
5851 -- Defining_Identifier (Node1)
5852 -- Library_Unit (Node4-Sem) points to the subunit
5853 -- Corresponding_Body (Node5-Sem)
5855 ----------------------------
5856 -- 10.1.3 Task Body Stub --
5857 ----------------------------
5859 -- TASK_BODY_STUB ::=
5860 -- task body DEFINING_IDENTIFIER is separate;
5863 -- Sloc points to TASK
5864 -- Defining_Identifier (Node1)
5865 -- Library_Unit (Node4-Sem) points to the subunit
5866 -- Corresponding_Body (Node5-Sem)
5868 ---------------------------------
5869 -- 10.1.3 Protected Body Stub --
5870 ---------------------------------
5872 -- PROTECTED_BODY_STUB ::=
5873 -- protected body DEFINING_IDENTIFIER is separate;
5875 -- Note: protected body stubs are not allowed in Ada 83 mode
5877 -- N_Protected_Body_Stub
5878 -- Sloc points to PROTECTED
5879 -- Defining_Identifier (Node1)
5880 -- Library_Unit (Node4-Sem) points to the subunit
5881 -- Corresponding_Body (Node5-Sem)
5883 ---------------------
5884 -- 10.1.3 Subunit --
5885 ---------------------
5887 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
5890 -- Sloc points to SEPARATE
5891 -- Name (Node2) is the name of the parent unit
5892 -- Proper_Body (Node1) is the subunit body
5893 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
5895 ---------------------------------
5896 -- 11.1 Exception Declaration --
5897 ---------------------------------
5899 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception
5900 -- [ASPECT_SPECIFICATIONS];
5902 -- For consistency with object declarations etc., the parser converts
5903 -- the case of multiple identifiers being declared to a series of
5904 -- declarations in which the expression is copied, using the More_Ids
5905 -- and Prev_Ids flags to remember the source form as described in the
5906 -- section on "Handling of Defining Identifier Lists".
5908 -- N_Exception_Declaration
5909 -- Sloc points to EXCEPTION
5910 -- Defining_Identifier (Node1)
5911 -- Expression (Node3-Sem)
5912 -- Renaming_Exception (Node2-Sem)
5913 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5914 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5916 ------------------------------------------
5917 -- 11.2 Handled Sequence Of Statements --
5918 ------------------------------------------
5920 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
5921 -- SEQUENCE_OF_STATEMENTS
5923 -- EXCEPTION_HANDLER
5924 -- {EXCEPTION_HANDLER}]
5926 -- cleanup_procedure_call (param, param, param, ...);]
5928 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
5929 -- used only internally currently, but is considered to be syntactic.
5930 -- At the moment, the only cleanup action allowed is a single call to
5931 -- a parameterless procedure, and the Identifier field of the node is
5932 -- the procedure to be called. The cleanup action occurs whenever the
5933 -- sequence of statements is left for any reason. The possible reasons
5935 -- 1. reaching the end of the sequence
5936 -- 2. exit, return, or goto
5937 -- 3. exception or abort
5938 -- For some back ends, such as gcc with ZCX, "at end" is implemented
5939 -- entirely in the back end. In this case, a handled sequence of
5940 -- statements with an "at end" cannot also have exception handlers.
5941 -- For other back ends, such as gcc with SJLJ and .NET, the
5942 -- implementation is split between the front end and back end; the front
5943 -- end implements 3, and the back end implements 1 and 2. In this case,
5944 -- if there is an "at end", the front end inserts the appropriate
5945 -- exception handler, and this handler takes precedence over "at end"
5946 -- in case of exception.
5948 -- The inserted exception handler is of the form:
5950 -- when all others =>
5954 -- where cleanup is the procedure to be called. The reason we do this is
5955 -- so that the front end can handle the necessary entries in the
5956 -- exception tables, and other exception handler actions required as
5957 -- part of the normal handling for exception handlers.
5959 -- The AT END cleanup handler protects only the sequence of statements
5960 -- (not the associated declarations of the parent), just like exception
5961 -- handlers. The big difference is that the cleanup procedure is called
5962 -- on either a normal or an abnormal exit from the statement sequence.
5964 -- Note: the list of Exception_Handlers can contain pragmas as well
5965 -- as actual handlers. In practice these pragmas can only occur at
5966 -- the start of the list, since any pragmas occurring later on will
5967 -- be included in the statement list of the corresponding handler.
5969 -- Note: although in the Ada syntax, the sequence of statements in
5970 -- a handled sequence of statements can only contain statements, we
5971 -- allow free mixing of declarations and statements in the resulting
5972 -- expanded tree. This is for example used to deal with the case of
5973 -- a cleanup procedure that must handle declarations as well as the
5974 -- statements of a block.
5976 -- N_Handled_Sequence_Of_Statements
5977 -- Sloc points to first token of first statement
5978 -- Statements (List3)
5979 -- End_Label (Node4) (set to Empty if expander generated)
5980 -- Exception_Handlers (List5) (set to No_List if none present)
5981 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
5982 -- First_Real_Statement (Node2-Sem)
5984 -- Note: the parent always contains a Declarations field which contains
5985 -- declarations associated with the handled sequence of statements. This
5986 -- is true even in the case of an accept statement (see description of
5987 -- the N_Accept_Statement node).
5989 -- End_Label refers to the containing construct
5991 -----------------------------
5992 -- 11.2 Exception Handler --
5993 -----------------------------
5995 -- EXCEPTION_HANDLER ::=
5996 -- when [CHOICE_PARAMETER_SPECIFICATION :]
5997 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
5998 -- SEQUENCE_OF_STATEMENTS
6000 -- Note: choice parameter specification is not allowed in Ada 83 mode
6002 -- N_Exception_Handler
6003 -- Sloc points to WHEN
6004 -- Choice_Parameter (Node2) (set to Empty if not present)
6005 -- Exception_Choices (List4)
6006 -- Statements (List3)
6007 -- Exception_Label (Node5-Sem) (set to Empty of not present)
6008 -- Local_Raise_Statements (Elist1-Sem) (set to No_Elist if not present)
6009 -- Local_Raise_Not_OK (Flag7-Sem)
6010 -- Has_Local_Raise (Flag8-Sem)
6012 ------------------------------------------
6013 -- 11.2 Choice parameter specification --
6014 ------------------------------------------
6016 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
6018 ----------------------------
6019 -- 11.2 Exception Choice --
6020 ----------------------------
6022 -- EXCEPTION_CHOICE ::= exception_NAME | others
6024 -- Except in the case of OTHERS, no explicit node appears in the tree
6025 -- for exception choice. Instead the exception name appears directly.
6026 -- An OTHERS choice is represented by a N_Others_Choice node (see
6029 -- Note: for the exception choice created for an at end handler, the
6030 -- exception choice is an N_Others_Choice node with All_Others set.
6032 ---------------------------
6033 -- 11.3 Raise Statement --
6034 ---------------------------
6036 -- RAISE_STATEMENT ::= raise [exception_NAME];
6038 -- In Ada 2005, we have
6040 -- RAISE_STATEMENT ::= raise; | raise exception_NAME [with EXPRESSION];
6042 -- N_Raise_Statement
6043 -- Sloc points to RAISE
6044 -- Name (Node2) (set to Empty if no exception name present)
6045 -- Expression (Node3) (set to Empty if no expression present)
6046 -- From_At_End (Flag4-Sem)
6048 -------------------------------
6049 -- 12.1 Generic Declaration --
6050 -------------------------------
6052 -- GENERIC_DECLARATION ::=
6053 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
6055 ------------------------------------------
6056 -- 12.1 Generic Subprogram Declaration --
6057 ------------------------------------------
6059 -- GENERIC_SUBPROGRAM_DECLARATION ::=
6060 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION;
6062 -- Note: Generic_Formal_Declarations can include pragmas
6064 -- N_Generic_Subprogram_Declaration
6065 -- Sloc points to GENERIC
6066 -- Specification (Node1) subprogram specification
6067 -- Corresponding_Body (Node5-Sem)
6068 -- Generic_Formal_Declarations (List2) from generic formal part
6069 -- Parent_Spec (Node4-Sem)
6071 ---------------------------------------
6072 -- 12.1 Generic Package Declaration --
6073 ---------------------------------------
6075 -- GENERIC_PACKAGE_DECLARATION ::=
6076 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION
6077 -- [ASPECT_SPECIFICATIONS];
6079 -- Note: when we do generics right, the Activation_Chain_Entity entry
6080 -- for this node can be removed (since the expander won't see generic
6081 -- units any more)???.
6083 -- Note: Generic_Formal_Declarations can include pragmas
6085 -- N_Generic_Package_Declaration
6086 -- Sloc points to GENERIC
6087 -- Specification (Node1) package specification
6088 -- Corresponding_Body (Node5-Sem)
6089 -- Generic_Formal_Declarations (List2) from generic formal part
6090 -- Parent_Spec (Node4-Sem)
6091 -- Activation_Chain_Entity (Node3-Sem)
6093 -------------------------------
6094 -- 12.1 Generic Formal Part --
6095 -------------------------------
6097 -- GENERIC_FORMAL_PART ::=
6098 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
6100 ------------------------------------------------
6101 -- 12.1 Generic Formal Parameter Declaration --
6102 ------------------------------------------------
6104 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
6105 -- FORMAL_OBJECT_DECLARATION
6106 -- | FORMAL_TYPE_DECLARATION
6107 -- | FORMAL_SUBPROGRAM_DECLARATION
6108 -- | FORMAL_PACKAGE_DECLARATION
6110 ---------------------------------
6111 -- 12.3 Generic Instantiation --
6112 ---------------------------------
6114 -- GENERIC_INSTANTIATION ::=
6115 -- package DEFINING_PROGRAM_UNIT_NAME is
6116 -- new generic_package_NAME [GENERIC_ACTUAL_PART]
6117 -- [ASPECT_SPECIFICATIONS];
6118 -- | [[not] overriding]
6119 -- procedure DEFINING_PROGRAM_UNIT_NAME is
6120 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART]
6121 -- [ASPECT_SPECIFICATIONS];
6122 -- | [[not] overriding]
6123 -- function DEFINING_DESIGNATOR is
6124 -- new generic_function_NAME [GENERIC_ACTUAL_PART]
6125 -- [ASPECT_SPECIFICATIONS];
6127 -- N_Package_Instantiation
6128 -- Sloc points to PACKAGE
6129 -- Defining_Unit_Name (Node1)
6131 -- Generic_Associations (List3) (set to No_List if no
6132 -- generic actual part)
6133 -- Parent_Spec (Node4-Sem)
6134 -- Instance_Spec (Node5-Sem)
6135 -- ABE_Is_Certain (Flag18-Sem)
6137 -- N_Procedure_Instantiation
6138 -- Sloc points to PROCEDURE
6139 -- Defining_Unit_Name (Node1)
6141 -- Parent_Spec (Node4-Sem)
6142 -- Generic_Associations (List3) (set to No_List if no
6143 -- generic actual part)
6144 -- Instance_Spec (Node5-Sem)
6145 -- Must_Override (Flag14) set if overriding indicator present
6146 -- Must_Not_Override (Flag15) set if not_overriding indicator present
6147 -- ABE_Is_Certain (Flag18-Sem)
6149 -- N_Function_Instantiation
6150 -- Sloc points to FUNCTION
6151 -- Defining_Unit_Name (Node1)
6153 -- Generic_Associations (List3) (set to No_List if no
6154 -- generic actual part)
6155 -- Parent_Spec (Node4-Sem)
6156 -- Instance_Spec (Node5-Sem)
6157 -- Must_Override (Flag14) set if overriding indicator present
6158 -- Must_Not_Override (Flag15) set if not_overriding indicator present
6159 -- ABE_Is_Certain (Flag18-Sem)
6161 -- Note: overriding indicator is an Ada 2005 feature
6163 -------------------------------
6164 -- 12.3 Generic Actual Part --
6165 -------------------------------
6167 -- GENERIC_ACTUAL_PART ::=
6168 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
6170 -------------------------------
6171 -- 12.3 Generic Association --
6172 -------------------------------
6174 -- GENERIC_ASSOCIATION ::=
6175 -- [generic_formal_parameter_SELECTOR_NAME =>]
6177 -- Note: unlike the procedure call case, a generic association node
6178 -- is generated for every association, even if no formal parameter
6179 -- selector name is present. In this case the parser will leave the
6180 -- Selector_Name field set to Empty, to be filled in later by the
6183 -- In Ada 2005, a formal may be associated with a box, if the
6184 -- association is part of the list of actuals for a formal package.
6185 -- If the association is given by OTHERS => <>, the association is
6186 -- an N_Others_Choice.
6188 -- N_Generic_Association
6189 -- Sloc points to first token of generic association
6190 -- Selector_Name (Node2) (set to Empty if no formal
6191 -- parameter selector name)
6192 -- Explicit_Generic_Actual_Parameter (Node1) (Empty if box present)
6193 -- Box_Present (Flag15) (for formal_package associations with a box)
6195 ---------------------------------------------
6196 -- 12.3 Explicit Generic Actual Parameter --
6197 ---------------------------------------------
6199 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
6200 -- EXPRESSION | variable_NAME | subprogram_NAME
6201 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
6203 -------------------------------------
6204 -- 12.4 Formal Object Declaration --
6205 -------------------------------------
6207 -- FORMAL_OBJECT_DECLARATION ::=
6208 -- DEFINING_IDENTIFIER_LIST :
6209 -- MODE [NULL_EXCLUSION] SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
6210 -- [ASPECT_SPECIFICATIONS];
6211 -- | DEFINING_IDENTIFIER_LIST :
6212 -- MODE ACCESS_DEFINITION [:= DEFAULT_EXPRESSION]
6213 -- [ASPECT_SPECIFICATIONS];
6215 -- Although the syntax allows multiple identifiers in the list, the
6216 -- semantics is as though successive declarations were given with
6217 -- identical type definition and expression components. To simplify
6218 -- semantic processing, the parser represents a multiple declaration
6219 -- case as a sequence of single declarations, using the More_Ids and
6220 -- Prev_Ids flags to preserve the original source form as described
6221 -- in the section on "Handling of Defining Identifier Lists".
6223 -- N_Formal_Object_Declaration
6224 -- Sloc points to first identifier
6225 -- Defining_Identifier (Node1)
6226 -- In_Present (Flag15)
6227 -- Out_Present (Flag17)
6228 -- Null_Exclusion_Present (Flag11) (set to False if not present)
6229 -- Subtype_Mark (Node4) (set to Empty if not present)
6230 -- Access_Definition (Node3) (set to Empty if not present)
6231 -- Default_Expression (Node5) (set to Empty if no default expression)
6232 -- More_Ids (Flag5) (set to False if no more identifiers in list)
6233 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
6235 -----------------------------------
6236 -- 12.5 Formal Type Declaration --
6237 -----------------------------------
6239 -- FORMAL_TYPE_DECLARATION ::=
6240 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
6241 -- is FORMAL_TYPE_DEFINITION
6242 -- [ASPECT_SPECIFICATIONS];
6243 -- | type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [is tagged]
6245 -- N_Formal_Type_Declaration
6246 -- Sloc points to TYPE
6247 -- Defining_Identifier (Node1)
6248 -- Formal_Type_Definition (Node3)
6249 -- Discriminant_Specifications (List4) (set to No_List if no
6250 -- discriminant part)
6251 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
6253 ----------------------------------
6254 -- 12.5 Formal type definition --
6255 ----------------------------------
6257 -- FORMAL_TYPE_DEFINITION ::=
6258 -- FORMAL_PRIVATE_TYPE_DEFINITION
6259 -- | FORMAL_DERIVED_TYPE_DEFINITION
6260 -- | FORMAL_DISCRETE_TYPE_DEFINITION
6261 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
6262 -- | FORMAL_MODULAR_TYPE_DEFINITION
6263 -- | FORMAL_FLOATING_POINT_DEFINITION
6264 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
6265 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
6266 -- | FORMAL_ARRAY_TYPE_DEFINITION
6267 -- | FORMAL_ACCESS_TYPE_DEFINITION
6268 -- | FORMAL_INTERFACE_TYPE_DEFINITION
6269 -- | FORMAL_INCOMPLETE_TYPE_DEFINITION
6271 -- The Ada 2012 syntax introduces two new non-terminals:
6272 -- Formal_{Complete,Incomplete}_Type_Declaration just to introduce
6273 -- the latter category. Here we introduce an incomplete type definition
6274 -- in order to preserve as much as possible the existing structure.
6276 ---------------------------------------------
6277 -- 12.5.1 Formal Private Type Definition --
6278 ---------------------------------------------
6280 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
6281 -- [[abstract] tagged] [limited] private
6283 -- Note: TAGGED is not allowed in Ada 83 mode
6285 -- N_Formal_Private_Type_Definition
6286 -- Sloc points to PRIVATE
6287 -- Abstract_Present (Flag4)
6288 -- Tagged_Present (Flag15)
6289 -- Limited_Present (Flag17)
6291 --------------------------------------------
6292 -- 12.5.1 Formal Derived Type Definition --
6293 --------------------------------------------
6295 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
6296 -- [abstract] [limited | synchronized]
6297 -- new SUBTYPE_MARK [[and INTERFACE_LIST] with private]
6298 -- Note: this construct is not allowed in Ada 83 mode
6300 -- N_Formal_Derived_Type_Definition
6301 -- Sloc points to NEW
6302 -- Subtype_Mark (Node4)
6303 -- Private_Present (Flag15)
6304 -- Abstract_Present (Flag4)
6305 -- Limited_Present (Flag17)
6306 -- Synchronized_Present (Flag7)
6307 -- Interface_List (List2) (set to No_List if none)
6309 -----------------------------------------------
6310 -- 12.5.1 Formal Incomplete Type Definition --
6311 -----------------------------------------------
6313 -- FORMAL_INCOMPLETE_TYPE_DEFINITION ::= [tagged]
6315 -- N_Formal_Incomplete_Type_Definition
6316 -- Sloc points to identifier of parent
6317 -- Tagged_Present (Flag15)
6319 ---------------------------------------------
6320 -- 12.5.2 Formal Discrete Type Definition --
6321 ---------------------------------------------
6323 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
6325 -- N_Formal_Discrete_Type_Definition
6328 ---------------------------------------------------
6329 -- 12.5.2 Formal Signed Integer Type Definition --
6330 ---------------------------------------------------
6332 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
6334 -- N_Formal_Signed_Integer_Type_Definition
6335 -- Sloc points to RANGE
6337 --------------------------------------------
6338 -- 12.5.2 Formal Modular Type Definition --
6339 --------------------------------------------
6341 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
6343 -- N_Formal_Modular_Type_Definition
6344 -- Sloc points to MOD
6346 ----------------------------------------------
6347 -- 12.5.2 Formal Floating Point Definition --
6348 ----------------------------------------------
6350 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
6352 -- N_Formal_Floating_Point_Definition
6353 -- Sloc points to DIGITS
6355 ----------------------------------------------------
6356 -- 12.5.2 Formal Ordinary Fixed Point Definition --
6357 ----------------------------------------------------
6359 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
6361 -- N_Formal_Ordinary_Fixed_Point_Definition
6362 -- Sloc points to DELTA
6364 ---------------------------------------------------
6365 -- 12.5.2 Formal Decimal Fixed Point Definition --
6366 ---------------------------------------------------
6368 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
6370 -- Note: formal decimal fixed point definition not allowed in Ada 83
6372 -- N_Formal_Decimal_Fixed_Point_Definition
6373 -- Sloc points to DELTA
6375 ------------------------------------------
6376 -- 12.5.3 Formal Array Type Definition --
6377 ------------------------------------------
6379 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
6381 -------------------------------------------
6382 -- 12.5.4 Formal Access Type Definition --
6383 -------------------------------------------
6385 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
6387 ----------------------------------------------
6388 -- 12.5.5 Formal Interface Type Definition --
6389 ----------------------------------------------
6391 -- FORMAL_INTERFACE_TYPE_DEFINITION ::= INTERFACE_TYPE_DEFINITION
6393 -----------------------------------------
6394 -- 12.6 Formal Subprogram Declaration --
6395 -----------------------------------------
6397 -- FORMAL_SUBPROGRAM_DECLARATION ::=
6398 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION
6399 -- | FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION
6401 --------------------------------------------------
6402 -- 12.6 Formal Concrete Subprogram Declaration --
6403 --------------------------------------------------
6405 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION ::=
6406 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT]
6407 -- [ASPECT_SPECIFICATIONS];
6409 -- N_Formal_Concrete_Subprogram_Declaration
6410 -- Sloc points to WITH
6411 -- Specification (Node1)
6412 -- Default_Name (Node2) (set to Empty if no subprogram default)
6413 -- Box_Present (Flag15)
6415 -- Note: if no subprogram default is present, then Name is set
6416 -- to Empty, and Box_Present is False.
6418 --------------------------------------------------
6419 -- 12.6 Formal Abstract Subprogram Declaration --
6420 --------------------------------------------------
6422 -- FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION ::=
6423 -- with SUBPROGRAM_SPECIFICATION is abstract [SUBPROGRAM_DEFAULT]
6424 -- [ASPECT_SPECIFICATIONS];
6426 -- N_Formal_Abstract_Subprogram_Declaration
6427 -- Sloc points to WITH
6428 -- Specification (Node1)
6429 -- Default_Name (Node2) (set to Empty if no subprogram default)
6430 -- Box_Present (Flag15)
6432 -- Note: if no subprogram default is present, then Name is set
6433 -- to Empty, and Box_Present is False.
6435 ------------------------------
6436 -- 12.6 Subprogram Default --
6437 ------------------------------
6439 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
6441 -- There is no separate node in the tree for a subprogram default.
6442 -- Instead the parent (N_Formal_Concrete_Subprogram_Declaration
6443 -- or N_Formal_Abstract_Subprogram_Declaration) node contains the
6444 -- default name or box indication, as needed.
6446 ------------------------
6447 -- 12.6 Default Name --
6448 ------------------------
6450 -- DEFAULT_NAME ::= NAME
6452 --------------------------------------
6453 -- 12.7 Formal Package Declaration --
6454 --------------------------------------
6456 -- FORMAL_PACKAGE_DECLARATION ::=
6457 -- with package DEFINING_IDENTIFIER
6458 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART
6459 -- [ASPECT_SPECIFICATIONS];
6461 -- Note: formal package declarations not allowed in Ada 83 mode
6463 -- N_Formal_Package_Declaration
6464 -- Sloc points to WITH
6465 -- Defining_Identifier (Node1)
6467 -- Generic_Associations (List3) (set to No_List if (<>) case or
6468 -- empty generic actual part)
6469 -- Box_Present (Flag15)
6470 -- Instance_Spec (Node5-Sem)
6471 -- ABE_Is_Certain (Flag18-Sem)
6473 --------------------------------------
6474 -- 12.7 Formal Package Actual Part --
6475 --------------------------------------
6477 -- FORMAL_PACKAGE_ACTUAL_PART ::=
6479 -- | [GENERIC_ACTUAL_PART]
6480 -- (FORMAL_PACKAGE_ASSOCIATION {. FORMAL_PACKAGE_ASSOCIATION}
6482 -- FORMAL_PACKAGE_ASSOCIATION ::=
6483 -- GENERIC_ASSOCIATION
6484 -- | GENERIC_FORMAL_PARAMETER_SELECTOR_NAME => <>
6486 -- There is no explicit node in the tree for a formal package actual
6487 -- part. Instead the information appears in the parent node (i.e. the
6488 -- formal package declaration node itself).
6490 -- There is no explicit node for a formal package association. All of
6491 -- them are represented either by a generic association, possibly with
6492 -- Box_Present, or by an N_Others_Choice.
6494 ---------------------------------
6495 -- 13.1 Representation clause --
6496 ---------------------------------
6498 -- REPRESENTATION_CLAUSE ::=
6499 -- ATTRIBUTE_DEFINITION_CLAUSE
6500 -- | ENUMERATION_REPRESENTATION_CLAUSE
6501 -- | RECORD_REPRESENTATION_CLAUSE
6504 ----------------------
6505 -- 13.1 Local Name --
6506 ----------------------
6510 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
6511 -- | library_unit_NAME
6513 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
6514 -- as an attribute reference, which has essentially the same form.
6516 ---------------------------------------
6517 -- 13.3 Attribute definition clause --
6518 ---------------------------------------
6520 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
6521 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
6522 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
6524 -- In Ada 83, the expression must be a simple expression and the
6525 -- local name must be a direct name.
6527 -- Note: the only attribute definition clause that is processed by
6528 -- gigi is an address clause. For all other cases, the information
6529 -- is extracted by the front end and either results in setting entity
6530 -- information, e.g. Esize for the Size clause, or in appropriate
6531 -- expansion actions (e.g. in the case of Storage_Size).
6533 -- For an address clause, Gigi constructs the appropriate addressing
6534 -- code. It also ensures that no aliasing optimizations are made
6535 -- for the object for which the address clause appears.
6537 -- Note: for an address clause used to achieve an overlay:
6541 -- for B'Address use A'Address;
6543 -- the above rule means that Gigi will ensure that no optimizations
6544 -- will be made for B that would violate the implementation advice
6545 -- of RM 13.3(19). However, this advice applies only to B and not
6546 -- to A, which seems unfortunate. The GNAT front end will mark the
6547 -- object A as volatile to also prevent unwanted optimization
6548 -- assumptions based on no aliasing being made for B.
6550 -- N_Attribute_Definition_Clause
6551 -- Sloc points to FOR
6552 -- Name (Node2) the local name
6553 -- Chars (Name1) the identifier name from the attribute designator
6554 -- Expression (Node3) the expression or name
6555 -- Entity (Node4-Sem)
6556 -- Next_Rep_Item (Node5-Sem)
6557 -- From_At_Mod (Flag4-Sem)
6558 -- Check_Address_Alignment (Flag11-Sem)
6559 -- From_Aspect_Specification (Flag13-Sem)
6560 -- Is_Delayed_Aspect (Flag14-Sem)
6561 -- Address_Warning_Posted (Flag18-Sem)
6563 -- Note: if From_Aspect_Specification is set, then Sloc points to the
6564 -- aspect name, and Entity is resolved already to reference the entity
6565 -- to which the aspect applies.
6567 -----------------------------------
6568 -- 13.3.1 Aspect Specifications --
6569 -----------------------------------
6571 -- We modify the RM grammar here, the RM grammar is:
6573 -- ASPECT_SPECIFICATION ::=
6574 -- with ASPECT_MARK [=> ASPECT_DEFINITION] {,
6575 -- ASPECT_MARK [=> ASPECT_DEFINITION] }
6577 -- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
6579 -- ASPECT_DEFINITION ::= NAME | EXPRESSION
6581 -- That's inconvenient, since there is no non-terminal name for a single
6582 -- entry in the list of aspects. So we use this grammar instead:
6584 -- ASPECT_SPECIFICATIONS ::=
6585 -- with ASPECT_SPECIFICATION {, ASPECT_SPECIFICATION}
6587 -- ASPECT_SPECIFICATION =>
6588 -- ASPECT_MARK [=> ASPECT_DEFINITION]
6590 -- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
6592 -- ASPECT_DEFINITION ::= NAME | EXPRESSION
6594 -- See separate package Aspects for details on the incorporation of
6595 -- these nodes into the tree, and how aspect specifications for a given
6596 -- declaration node are associated with that node.
6598 -- N_Aspect_Specification
6599 -- Sloc points to aspect identifier
6600 -- Identifier (Node1) aspect identifier
6601 -- Aspect_Rep_Item (Node2-Sem)
6602 -- Expression (Node3) Aspect_Definition (set to Empty if none)
6603 -- Entity (Node4-Sem) entity to which the aspect applies
6604 -- Class_Present (Flag6) Set if 'Class present
6605 -- Next_Rep_Item (Node5-Sem)
6606 -- Split_PPC (Flag17) Set if split pre/post attribute
6607 -- Is_Boolean_Aspect (Flag16-Sem)
6608 -- Is_Delayed_Aspect (Flag14-Sem)
6610 -- Note: Aspect_Specification is an Ada 2012 feature
6612 -- Note: The Identifier serves to identify the aspect involved (it
6613 -- is the aspect whose name corresponds to the Chars field). This
6614 -- means that the other fields of this identifier are unused, and
6615 -- in particular we use the Entity field of this identifier to save
6616 -- a copy of the expression for visibility analysis, see spec of
6617 -- Sem_Ch13 for full details of this usage.
6619 -- Note: When a Pre or Post aspect specification is processed, it is
6620 -- broken into AND THEN sections. The left most section has Split_PPC
6621 -- set to False, indicating that it is the original specification (e.g.
6622 -- for posting errors). For the other sections, Split_PPC is set True.
6624 ---------------------------------------------
6625 -- 13.4 Enumeration representation clause --
6626 ---------------------------------------------
6628 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
6629 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
6631 -- In Ada 83, the name must be a direct name
6633 -- N_Enumeration_Representation_Clause
6634 -- Sloc points to FOR
6635 -- Identifier (Node1) direct name
6636 -- Array_Aggregate (Node3)
6637 -- Next_Rep_Item (Node5-Sem)
6639 ---------------------------------
6640 -- 13.4 Enumeration aggregate --
6641 ---------------------------------
6643 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
6645 ------------------------------------------
6646 -- 13.5.1 Record representation clause --
6647 ------------------------------------------
6649 -- RECORD_REPRESENTATION_CLAUSE ::=
6650 -- for first_subtype_LOCAL_NAME use
6651 -- record [MOD_CLAUSE]
6652 -- {COMPONENT_CLAUSE}
6655 -- Gigi restriction: Mod_Clause is always Empty (if present it is
6656 -- replaced by a corresponding Alignment attribute definition clause).
6658 -- Note: Component_Clauses can include pragmas
6660 -- N_Record_Representation_Clause
6661 -- Sloc points to FOR
6662 -- Identifier (Node1) direct name
6663 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
6664 -- Component_Clauses (List3)
6665 -- Next_Rep_Item (Node5-Sem)
6667 ------------------------------
6668 -- 13.5.1 Component clause --
6669 ------------------------------
6671 -- COMPONENT_CLAUSE ::=
6672 -- component_LOCAL_NAME at POSITION
6673 -- range FIRST_BIT .. LAST_BIT;
6675 -- N_Component_Clause
6676 -- Sloc points to AT
6677 -- Component_Name (Node1) points to Name or Attribute_Reference
6679 -- First_Bit (Node3)
6682 ----------------------
6683 -- 13.5.1 Position --
6684 ----------------------
6686 -- POSITION ::= static_EXPRESSION
6688 -----------------------
6689 -- 13.5.1 First_Bit --
6690 -----------------------
6692 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
6694 ----------------------
6695 -- 13.5.1 Last_Bit --
6696 ----------------------
6698 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
6700 --------------------------
6701 -- 13.8 Code statement --
6702 --------------------------
6704 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
6706 -- Note: in GNAT, the qualified expression has the form
6708 -- Asm_Insn'(Asm (...));
6710 -- See package System.Machine_Code in file s-maccod.ads for details on
6711 -- the allowed parameters to Asm. There are two ways this node can
6712 -- arise, as a code statement, in which case the expression is the
6713 -- qualified expression, or as a result of the expansion of an intrinsic
6714 -- call to the Asm or Asm_Input procedure.
6717 -- Sloc points to first token of the expression
6718 -- Expression (Node3)
6720 -- Note: package Exp_Code contains an abstract functional interface
6721 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
6723 ------------------------
6724 -- 13.12 Restriction --
6725 ------------------------
6728 -- restriction_IDENTIFIER
6729 -- | restriction_parameter_IDENTIFIER => EXPRESSION
6731 -- There is no explicit node for restrictions. Instead the restriction
6732 -- appears in normal pragma syntax as a pragma argument association,
6733 -- which has the same syntactic form.
6735 --------------------------
6736 -- B.2 Shift Operators --
6737 --------------------------
6739 -- Calls to the intrinsic shift functions are converted to one of
6740 -- the following shift nodes, which have the form of normal binary
6741 -- operator names. Note that for a given shift operation, one node
6742 -- covers all possible types, as for normal operators.
6744 -- Note: it is perfectly permissible for the expander to generate
6745 -- shift operation nodes directly, in which case they will be analyzed
6746 -- and parsed in the usual manner.
6748 -- Sprint syntax: shift-function-name!(expr, count)
6750 -- Note: the Left_Opnd field holds the first argument (the value to
6751 -- be shifted). The Right_Opnd field holds the second argument (the
6752 -- shift count). The Chars field is the name of the intrinsic function.
6755 -- Sloc points to the function name
6756 -- plus fields for binary operator
6757 -- plus fields for expression
6758 -- Shift_Count_OK (Flag4-Sem)
6760 -- N_Op_Rotate_Right
6761 -- Sloc points to the function name
6762 -- plus fields for binary operator
6763 -- plus fields for expression
6764 -- Shift_Count_OK (Flag4-Sem)
6767 -- Sloc points to the function name
6768 -- plus fields for binary operator
6769 -- plus fields for expression
6770 -- Shift_Count_OK (Flag4-Sem)
6772 -- N_Op_Shift_Right_Arithmetic
6773 -- Sloc points to the function name
6774 -- plus fields for binary operator
6775 -- plus fields for expression
6776 -- Shift_Count_OK (Flag4-Sem)
6779 -- Sloc points to the function name
6780 -- plus fields for binary operator
6781 -- plus fields for expression
6782 -- Shift_Count_OK (Flag4-Sem)
6784 --------------------------
6785 -- Obsolescent Features --
6786 --------------------------
6788 -- The syntax descriptions and tree nodes for obsolescent features are
6789 -- grouped together, corresponding to their location in appendix I in
6790 -- the RM. However, parsing and semantic analysis for these constructs
6791 -- is located in an appropriate chapter (see individual notes).
6793 ---------------------------
6794 -- J.3 Delta Constraint --
6795 ---------------------------
6797 -- Note: the parse routine for this construct is located in section
6798 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
6799 -- where delta constraint logically belongs.
6801 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
6803 -- N_Delta_Constraint
6804 -- Sloc points to DELTA
6805 -- Delta_Expression (Node3)
6806 -- Range_Constraint (Node4) (set to Empty if not present)
6808 --------------------
6810 --------------------
6812 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
6814 -- Note: the parse routine for this construct is located in Par-Ch13,
6815 -- and the semantic analysis is in Sem_Ch13, where at clause logically
6816 -- belongs if it were not obsolescent.
6818 -- Note: in Ada 83 the expression must be a simple expression
6820 -- Gigi restriction: This node never appears, it is rewritten as an
6821 -- address attribute definition clause.
6824 -- Sloc points to FOR
6825 -- Identifier (Node1)
6826 -- Expression (Node3)
6828 ---------------------
6829 -- J.8 Mod clause --
6830 ---------------------
6832 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
6834 -- Note: the parse routine for this construct is located in Par-Ch13,
6835 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
6836 -- belongs if it were not obsolescent.
6838 -- Note: in Ada 83, the expression must be a simple expression
6840 -- Gigi restriction: this node never appears. It is replaced
6841 -- by a corresponding Alignment attribute definition clause.
6843 -- Note: pragmas can appear before and after the MOD_CLAUSE since
6844 -- its name has "clause" in it. This is rather strange, but is quite
6845 -- definitely specified. The pragmas before are collected in the
6846 -- Pragmas_Before field of the mod clause node itself, and pragmas
6847 -- after are simply swallowed up in the list of component clauses.
6850 -- Sloc points to AT
6851 -- Expression (Node3)
6852 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
6854 --------------------
6855 -- Semantic Nodes --
6856 --------------------
6858 -- These semantic nodes are used to hold additional semantic information.
6859 -- They are inserted into the tree as a result of semantic processing.
6860 -- Although there are no legitimate source syntax constructions that
6861 -- correspond directly to these nodes, we need a source syntax for the
6862 -- reconstructed tree printed by Sprint, and the node descriptions here
6863 -- show this syntax.
6865 -- Note: Case_Expression and Conditional_Expression is in this section for
6866 -- now, since they are extensions. We will move them to their appropriate
6867 -- places when they are officially approved as extensions (and then we will
6868 -- know what the exact grammar and place in the Reference Manual is!)
6870 ---------------------
6871 -- Case Expression --
6872 ---------------------
6874 -- CASE_EXPRESSION ::=
6875 -- case EXPRESSION is
6876 -- CASE_EXPRESSION_ALTERNATIVE
6877 -- {CASE_EXPRESSION_ALTERNATIVE}
6879 -- Note that the Alternatives cannot include pragmas (this contrasts
6880 -- with the situation of case statements where pragmas are allowed).
6882 -- N_Case_Expression
6883 -- Sloc points to CASE
6884 -- Expression (Node3)
6885 -- Alternatives (List4)
6887 ---------------------------------
6888 -- Case Expression Alternative --
6889 ---------------------------------
6891 -- CASE_STATEMENT_ALTERNATIVE ::=
6892 -- when DISCRETE_CHOICE_LIST =>
6895 -- N_Case_Expression_Alternative
6896 -- Sloc points to WHEN
6898 -- Discrete_Choices (List4)
6899 -- Expression (Node3)
6901 -- Note: The Actions field temporarily holds any actions associated with
6902 -- evaluation of the Expression. During expansion of the case expression
6903 -- these actions are wrapped into an N_Expressions_With_Actions node
6904 -- replacing the original expression.
6906 ----------------------------
6907 -- Conditional Expression --
6908 ----------------------------
6910 -- This node is used to represent an expression corresponding to the
6911 -- C construct (condition ? then-expression : else_expression), where
6912 -- Expressions is a three element list, whose first expression is the
6913 -- condition, and whose second and third expressions are the then and
6914 -- else expressions respectively.
6916 -- Note: the Then_Actions and Else_Actions fields are always set to
6917 -- No_List in the tree passed to Gigi. These fields are used only
6918 -- for temporary processing purposes in the expander.
6920 -- The Ada language does not permit conditional expressions, however
6921 -- this is under discussion as a possible extension by the ARG, and we
6922 -- have implemented a form of this capability in GNAT under control of
6923 -- the -gnatX switch. The syntax is:
6925 -- CONDITIONAL_EXPRESSION ::=
6926 -- if EXPRESSION then EXPRESSION
6927 -- {elsif EXPRESSION then EXPRESSION}
6928 -- [else EXPRESSION]
6930 -- And we add the additional constructs
6932 -- PRIMARY ::= ( CONDITIONAL_EXPRESSION )
6933 -- PRAGMA_ARGUMENT_ASSOCIATION ::= CONDITIONAL_EXPRESSION
6935 -- Note: if we have (IF x1 THEN x2 ELSIF x3 THEN x4 ELSE x5) then it
6936 -- is represented as (IF x1 THEN x2 ELSE (IF x3 THEN x4 ELSE x5)) and
6937 -- the Is_Elsif flag is set on the inner conditional expression.
6939 -- N_Conditional_Expression
6940 -- Sloc points to IF or ELSIF keyword
6941 -- Expressions (List1)
6942 -- Then_Actions (List2-Sem)
6943 -- Else_Actions (List3-Sem)
6944 -- Is_Elsif (Flag13) (set if comes from ELSIF)
6945 -- plus fields for expression
6951 -- This node is used to hold the various parts of an entry or subprogram
6952 -- contract, consisting in pre- and postconditions on the one hand, and
6953 -- test-cases on the other hand.
6955 -- It is referenced from an entry, a subprogram or a generic subprogram
6958 -- Sprint syntax: <none> as the node should not appear in the tree, but
6959 -- only attached to an entry or [generic] subprogram
6963 -- Sloc points to the subprogram's name
6964 -- Spec_PPC_List (Node1) (set to Empty if none)
6965 -- Spec_TC_List (Node2) (set to Empty if none)
6967 -- Spec_PPC_List points to a list of Precondition and Postcondition
6968 -- pragma nodes for preconditions and postconditions declared in the
6969 -- spec of the entry/subprogram. The last pragma encountered is at the
6970 -- head of this list, so it is in reverse order of textual appearance.
6971 -- Note that this includes precondition/postcondition pragmas generated
6972 -- to correspond to Pre/Post aspects.
6974 -- Spec_TC_List points to a list of Test_Case pragma nodes for
6975 -- test-cases declared in the spec of the entry/subprogram. The last
6976 -- pragma encountered is at the head of this list, so it is in reverse
6977 -- order of textual appearance. Note that this includes test-case
6978 -- pragmas generated to correspond to Test_Case aspects.
6984 -- The N_Expanded_Name node is used to represent a selected component
6985 -- name that has been resolved to an expanded name. The semantic phase
6986 -- replaces N_Selected_Component nodes that represent names by the use
6987 -- of this node, leaving the N_Selected_Component node used only when
6988 -- the prefix is a record or protected type.
6990 -- The fields of the N_Expanded_Name node are layed out identically
6991 -- to those of the N_Selected_Component node, allowing conversion of
6992 -- an expanded name node to a selected component node to be done
6993 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
6995 -- There is no special sprint syntax for an expanded name
6998 -- Sloc points to the period
6999 -- Chars (Name1) copy of Chars field of selector name
7001 -- Selector_Name (Node2)
7002 -- Entity (Node4-Sem)
7003 -- Associated_Node (Node4-Sem)
7004 -- Has_Private_View (Flag11-Sem) set in generic units.
7005 -- Redundant_Use (Flag13-Sem)
7006 -- Atomic_Sync_Required (Flag14-Sem)
7007 -- plus fields for expression
7009 -----------------------------
7010 -- Expression with Actions --
7011 -----------------------------
7013 -- This node is created by the analyzer/expander to handle some
7014 -- expansion cases, notably short circuit forms where there are
7015 -- actions associated with the right-hand side operand.
7017 -- The N_Expression_With_Actions node represents an expression with
7018 -- an associated set of actions (which are executable statements and
7019 -- declarations, as might occur in a handled statement sequence).
7021 -- The required semantics is that the set of actions is executed in
7022 -- the order in which it appears just before the expression is
7023 -- evaluated (and these actions must only be executed if the value
7024 -- of the expression is evaluated). The node is considered to be
7025 -- a subexpression, whose value is the value of the Expression after
7026 -- executing all the actions.
7028 -- Note: if the actions contain declarations, then these declarations
7029 -- may be referenced within the expression. It is thus appropriate for
7030 -- the back-end to create a scope that encompasses the construct (any
7031 -- declarations within the actions will definitely not be referenced
7032 -- once elaboration of the construct is completed).
7034 -- Sprint syntax: do
7039 -- in expression end
7041 -- N_Expression_With_Actions
7043 -- Expression (Node3)
7044 -- plus fields for expression
7046 -- Note: the actions list is always non-null, since we would
7047 -- never have created this node if there weren't some actions.
7049 --------------------
7050 -- Free Statement --
7051 --------------------
7053 -- The N_Free_Statement node is generated as a result of a call to an
7054 -- instantiation of Unchecked_Deallocation. The instantiation of this
7055 -- generic is handled specially and generates this node directly.
7057 -- Sprint syntax: free expression
7060 -- Sloc is copied from the unchecked deallocation call
7061 -- Expression (Node3) argument to unchecked deallocation call
7062 -- Storage_Pool (Node1-Sem)
7063 -- Procedure_To_Call (Node2-Sem)
7064 -- Actual_Designated_Subtype (Node4-Sem)
7066 -- Note: in the case where a debug source file is generated, the Sloc
7067 -- for this node points to the FREE keyword in the Sprint file output.
7073 -- This node marks the point in a declarative part at which an entity
7074 -- declared therein becomes frozen. The expander places initialization
7075 -- procedures for types at those points. Gigi uses the freezing point
7076 -- to elaborate entities that may depend on previous private types.
7078 -- See the section in Einfo "Delayed Freezing and Elaboration" for
7079 -- a full description of the use of this node.
7081 -- The Entity field points back to the entity for the type (whose
7082 -- Freeze_Node field points back to this freeze node).
7084 -- The Actions field contains a list of declarations and statements
7085 -- generated by the expander which are associated with the freeze
7086 -- node, and are elaborated as though the freeze node were replaced
7087 -- by this sequence of actions.
7089 -- Note: the Sloc field in the freeze node references a construct
7090 -- associated with the freezing point. This is used for posting
7091 -- messages in some error/warning situations, e.g. the case where
7092 -- a primitive operation of a tagged type is declared too late.
7094 -- Sprint syntax: freeze entity-name [
7099 -- Sloc points near freeze point (see above special note)
7100 -- Entity (Node4-Sem)
7101 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
7102 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
7103 -- Actions (List1) (set to No_List if no freeze actions)
7104 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
7106 -- The Actions field holds actions associated with the freeze. These
7107 -- actions are elaborated at the point where the type is frozen.
7109 -- Note: in the case where a debug source file is generated, the Sloc
7110 -- for this node points to the FREEZE keyword in the Sprint file output.
7112 --------------------------------
7113 -- Implicit Label Declaration --
7114 --------------------------------
7116 -- An implicit label declaration is created for every occurrence of a
7117 -- label on a statement or a label on a block or loop. It is chained
7118 -- in the declarations of the innermost enclosing block as specified
7119 -- in RM section 5.1 (3).
7121 -- The Defining_Identifier is the actual identifier for the statement
7122 -- identifier. Note that the occurrence of the label is a reference, NOT
7123 -- the defining occurrence. The defining occurrence occurs at the head
7124 -- of the innermost enclosing block, and is represented by this node.
7126 -- Note: from the grammar, this might better be called an implicit
7127 -- statement identifier declaration, but the term we choose seems
7128 -- friendlier, since at least informally statement identifiers are
7129 -- called labels in both cases (i.e. when used in labels, and when
7130 -- used as the identifiers of blocks and loops).
7132 -- Note: although this is logically a semantic node, since it does not
7133 -- correspond directly to a source syntax construction, these nodes are
7134 -- actually created by the parser in a post pass done just after parsing
7135 -- is complete, before semantic analysis is started (see Par.Labl).
7137 -- Sprint syntax: labelname : label;
7139 -- N_Implicit_Label_Declaration
7140 -- Sloc points to the << of the label
7141 -- Defining_Identifier (Node1)
7142 -- Label_Construct (Node2-Sem)
7144 -- Note: in the case where a debug source file is generated, the Sloc
7145 -- for this node points to the label name in the generated declaration.
7147 ---------------------
7148 -- Itype_Reference --
7149 ---------------------
7151 -- This node is used to create a reference to an Itype. The only purpose
7152 -- is to make sure the Itype is defined if this is the first reference.
7154 -- A typical use of this node is when an Itype is to be referenced in
7155 -- two branches of an IF statement. In this case it is important that
7156 -- the first use of the Itype not be inside the conditional, since then
7157 -- it might not be defined if the other branch of the IF is taken, in
7158 -- the case where the definition generates elaboration code.
7160 -- The Itype field points to the referenced Itype
7162 -- Sprint syntax: reference itype-name
7164 -- N_Itype_Reference
7165 -- Sloc points to the node generating the reference
7166 -- Itype (Node1-Sem)
7168 -- Note: in the case where a debug source file is generated, the Sloc
7169 -- for this node points to the REFERENCE keyword in the file output.
7171 ---------------------
7172 -- Raise_xxx_Error --
7173 ---------------------
7175 -- One of these nodes is created during semantic analysis to replace
7176 -- a node for an expression that is determined to definitely raise
7177 -- the corresponding exception.
7179 -- The N_Raise_xxx_Error node may also stand alone in place
7180 -- of a declaration or statement, in which case it simply causes
7181 -- the exception to be raised (i.e. it is equivalent to a raise
7182 -- statement that raises the corresponding exception). This use
7183 -- is distinguished by the fact that the Etype in this case is
7184 -- Standard_Void_Type, In the subexpression case, the Etype is the
7185 -- same as the type of the subexpression which it replaces.
7187 -- If Condition is empty, then the raise is unconditional. If the
7188 -- Condition field is non-empty, it is a boolean expression which
7189 -- is first evaluated, and the exception is raised only if the
7190 -- value of the expression is True. In the unconditional case, the
7191 -- creation of this node is usually accompanied by a warning message
7192 -- error. The creation of this node will usually be accompanied by a
7193 -- message (unless it appears within the right operand of a short
7194 -- circuit form whose left argument is static and decisively
7195 -- eliminates elaboration of the raise operation. The condition field
7196 -- can ONLY be present when the node is used as a statement form, it
7197 -- may NOT be present in the case where the node appears within an
7200 -- The exception is generated with a message that contains the
7201 -- file name and line number, and then appended text. The Reason
7202 -- code shows the text to be added. The Reason code is an element
7203 -- of the type Types.RT_Exception_Code, and indicates both the
7204 -- message to be added, and the exception to be raised (which must
7205 -- match the node type). The value is stored by storing a Uint which
7206 -- is the Pos value of the enumeration element in this type.
7208 -- Gigi restriction: This expander ensures that the type of the
7209 -- Condition field is always Standard.Boolean, even if the type
7210 -- in the source is some non-standard boolean type.
7212 -- Sprint syntax: [xxx_error "msg"]
7213 -- or: [xxx_error when condition "msg"]
7215 -- N_Raise_Constraint_Error
7216 -- Sloc references related construct
7217 -- Condition (Node1) (set to Empty if no condition)
7219 -- plus fields for expression
7221 -- N_Raise_Program_Error
7222 -- Sloc references related construct
7223 -- Condition (Node1) (set to Empty if no condition)
7225 -- plus fields for expression
7227 -- N_Raise_Storage_Error
7228 -- Sloc references related construct
7229 -- Condition (Node1) (set to Empty if no condition)
7231 -- plus fields for expression
7233 -- Note: Sloc is copied from the expression generating the exception.
7234 -- In the case where a debug source file is generated, the Sloc for
7235 -- this node points to the left bracket in the Sprint file output.
7237 -- Note: the back end may be required to translate these nodes into
7238 -- appropriate goto statements. See description of N_Push/Pop_xxx_Label.
7240 ---------------------------------------------
7241 -- Optimization of Exception Raise to Goto --
7242 ---------------------------------------------
7244 -- In some cases, the front end will determine that any exception raised
7245 -- by the back end for a certain exception should be transformed into a
7248 -- There are three kinds of exceptions raised by the back end (note that
7249 -- for this purpose we consider gigi to be part of the back end in the
7252 -- 1. Exceptions resulting from N_Raise_xxx_Error nodes
7253 -- 2. Exceptions from checks triggered by Do_xxx_Check flags
7254 -- 3. Other cases not specifically marked by the front end
7256 -- Normally all such exceptions are translated into calls to the proper
7257 -- Rcheck_xx procedure, where xx encodes both the exception to be raised
7258 -- and the exception message.
7260 -- The front end may determine that for a particular sequence of code,
7261 -- exceptions in any of these three categories for a particular builtin
7262 -- exception should result in a goto, rather than a call to Rcheck_xx.
7263 -- The exact sequence to be generated is:
7265 -- Local_Raise (exception'Identity);
7268 -- The front end marks such a sequence of code by bracketing it with
7269 -- push and pop nodes:
7271 -- N_Push_xxx_Label (referencing the label)
7273 -- (code where transformation is expected for exception xxx)
7277 -- The use of push/pop reflects the fact that such regions can properly
7278 -- nest, and one special case is a subregion in which no transformation
7279 -- is allowed. Such a region is marked by a N_Push_xxx_Label node whose
7280 -- Exception_Label field is Empty.
7282 -- N_Push_Constraint_Error_Label
7283 -- Sloc references first statement in region covered
7284 -- Exception_Label (Node5-Sem)
7286 -- N_Push_Program_Error_Label
7287 -- Sloc references first statement in region covered
7288 -- Exception_Label (Node5-Sem)
7290 -- N_Push_Storage_Error_Label
7291 -- Sloc references first statement in region covered
7292 -- Exception_Label (Node5-Sem)
7294 -- N_Pop_Constraint_Error_Label
7295 -- Sloc references last statement in region covered
7297 -- N_Pop_Program_Error_Label
7298 -- Sloc references last statement in region covered
7300 -- N_Pop_Storage_Error_Label
7301 -- Sloc references last statement in region covered
7307 -- For a number of purposes, we need to construct references to objects.
7308 -- These references are subsequently treated as normal access values.
7309 -- An example is the construction of the parameter block passed to a
7310 -- task entry. The N_Reference node is provided for this purpose. It is
7311 -- similar in effect to the use of the Unrestricted_Access attribute,
7312 -- and like Unrestricted_Access can be applied to objects which would
7313 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
7314 -- objects which are not aliased, and slices). In addition it can be
7315 -- applied to composite type values as well as objects, including string
7316 -- values and aggregates.
7318 -- Note: we use the Prefix field for this expression so that the
7319 -- resulting node can be treated using common code with the attribute
7320 -- nodes for the 'Access and related attributes. Logically it would make
7321 -- more sense to call it an Expression field, but then we would have to
7322 -- special case the treatment of the N_Reference node.
7324 -- Note: evaluating a N_Reference node is guaranteed to yield a non-null
7325 -- value at run time. Therefore, it is valid to set Is_Known_Non_Null on
7326 -- a temporary initialized to a N_Reference node in order to eliminate
7327 -- superfluous access checks.
7329 -- Sprint syntax: prefix'reference
7332 -- Sloc is copied from the expression
7334 -- plus fields for expression
7336 -- Note: in the case where a debug source file is generated, the Sloc
7337 -- for this node points to the quote in the Sprint file output.
7343 -- SCIL nodes are special nodes added to the tree when the CodePeer
7344 -- mode is active. They help the CodePeer backend to locate nodes that
7345 -- require special processing.
7347 -- Major documentation on the general design of the SCIL interface, and
7348 -- in particular detailed description of these nodes is missing and is
7349 -- to be supplied in the future, when the design has finalized ???
7351 -- Meanwhile these nodes should be considered in experimental form, and
7352 -- should be ignored by all code generating back ends. ???
7354 -- N_SCIL_Dispatch_Table_Tag_Init
7355 -- Sloc references a node for a tag initialization
7356 -- SCIL_Entity (Node4-Sem)
7358 -- N_SCIL_Dispatching_Call
7359 -- Sloc references the node of a dispatching call
7360 -- SCIL_Target_Prim (Node2-Sem)
7361 -- SCIL_Entity (Node4-Sem)
7362 -- SCIL_Controlling_Tag (Node5-Sem)
7364 -- N_SCIL_Membership_Test
7365 -- Sloc references the node of a membership test
7366 -- SCIL_Tag_Value (Node5-Sem)
7367 -- SCIL_Entity (Node4-Sem)
7369 ---------------------
7370 -- Subprogram_Info --
7371 ---------------------
7373 -- This node generates the appropriate Subprogram_Info value for a
7374 -- given procedure. See Ada.Exceptions for further details
7376 -- Sprint syntax: subprog'subprogram_info
7378 -- N_Subprogram_Info
7379 -- Sloc points to the entity for the procedure
7380 -- Identifier (Node1) identifier referencing the procedure
7381 -- Etype (Node5-Sem) type (always set to Ada.Exceptions.Code_Loc
7383 -- Note: in the case where a debug source file is generated, the Sloc
7384 -- for this node points to the quote in the Sprint file output.
7386 --------------------------
7387 -- Unchecked Expression --
7388 --------------------------
7390 -- An unchecked expression is one that must be analyzed and resolved
7391 -- with all checks off, regardless of the current setting of scope
7394 -- Sprint syntax: `(expression)
7396 -- Note: this node is always removed from the tree (and replaced by
7397 -- its constituent expression) on completion of analysis, so it only
7398 -- appears in intermediate trees, and will never be seen by Gigi.
7400 -- N_Unchecked_Expression
7401 -- Sloc is a copy of the Sloc of the expression
7402 -- Expression (Node3)
7403 -- plus fields for expression
7405 -- Note: in the case where a debug source file is generated, the Sloc
7406 -- for this node points to the back quote in the Sprint file output.
7408 -------------------------------
7409 -- Unchecked Type Conversion --
7410 -------------------------------
7412 -- An unchecked type conversion node represents the semantic action
7413 -- corresponding to a call to an instantiation of Unchecked_Conversion.
7414 -- It is generated as a result of actual use of Unchecked_Conversion
7415 -- and also the expander generates unchecked type conversion nodes
7416 -- directly for expansion of complex semantic actions.
7418 -- Note: an unchecked type conversion is a variable as far as the
7419 -- semantics are concerned, which is convenient for the expander.
7420 -- This does not change what Ada source programs are legal, since
7421 -- clearly a function call to an instantiation of Unchecked_Conversion
7422 -- is not a variable in any case.
7424 -- Sprint syntax: subtype-mark!(expression)
7426 -- N_Unchecked_Type_Conversion
7427 -- Sloc points to related node in source
7428 -- Subtype_Mark (Node4)
7429 -- Expression (Node3)
7430 -- Kill_Range_Check (Flag11-Sem)
7431 -- No_Truncation (Flag17-Sem)
7432 -- plus fields for expression
7434 -- Note: in the case where a debug source file is generated, the Sloc
7435 -- for this node points to the exclamation in the Sprint file output.
7437 -----------------------------------
7438 -- Validate_Unchecked_Conversion --
7439 -----------------------------------
7441 -- The front end does most of the validation of unchecked conversion,
7442 -- including checking sizes (this is done after the back end is called
7443 -- to take advantage of back-annotation of calculated sizes).
7445 -- The front end also deals with specific cases that are not allowed
7446 -- e.g. involving unconstrained array types.
7448 -- For the case of the standard gigi backend, this means that all
7449 -- checks are done in the front-end.
7451 -- However, in the case of specialized back-ends, notably the JVM
7452 -- backend for JGNAT, additional requirements and restrictions apply
7453 -- to unchecked conversion, and these are most conveniently performed
7454 -- in the specialized back-end.
7456 -- To accommodate this requirement, for such back ends, the following
7457 -- special node is generated recording an unchecked conversion that
7458 -- needs to be validated. The back end should post an appropriate
7459 -- error message if the unchecked conversion is invalid or warrants
7460 -- a special warning message.
7462 -- Source_Type and Target_Type point to the entities for the two
7463 -- types involved in the unchecked conversion instantiation that
7464 -- is to be validated.
7466 -- Sprint syntax: validate Unchecked_Conversion (source, target);
7468 -- N_Validate_Unchecked_Conversion
7469 -- Sloc points to instantiation (location for warning message)
7470 -- Source_Type (Node1-Sem)
7471 -- Target_Type (Node2-Sem)
7473 -- Note: in the case where a debug source file is generated, the Sloc
7474 -- for this node points to the VALIDATE keyword in the file output.
7480 -- Used as the contents of the Nkind field of the dummy Empty node
7481 -- and in some other situations to indicate an uninitialized value.
7484 -- Chars (Name1) is set to No_Name
7490 -- Used as the contents of the Nkind field of the dummy Error node.
7491 -- Has an Etype field, which gets set to Any_Type later on, to help
7492 -- error recovery (Error_Posted is also set in the Error node).
7495 -- Chars (Name1) is set to Error_Name
7496 -- Etype (Node5-Sem)
7498 --------------------------
7499 -- Node Type Definition --
7500 --------------------------
7502 -- The following is the definition of the Node_Kind type. As previously
7503 -- discussed, this is separated off to allow rearrangement of the order to
7504 -- facilitate definition of subtype ranges. The comments show the subtype
7505 -- classes which apply to each set of node kinds. The first entry in the
7506 -- comment characterizes the following list of nodes.
7511 -- N_Representation_Clause
7515 N_Enumeration_Representation_Clause,
7517 N_Record_Representation_Clause,
7519 -- N_Representation_Clause, N_Has_Chars
7521 N_Attribute_Definition_Clause,
7526 N_Pragma_Argument_Association,
7528 -- N_Has_Etype, N_Has_Chars
7530 -- Note: of course N_Error does not really have Etype or Chars fields,
7531 -- and any attempt to access these fields in N_Error will cause an
7532 -- error, but historically this always has been positioned so that an
7533 -- "in N_Has_Chars" or "in N_Has_Etype" test yields true for N_Error.
7534 -- Most likely this makes coding easier somewhere but still seems
7535 -- undesirable. To be investigated some time ???
7539 -- N_Entity, N_Has_Etype, N_Has_Chars
7541 N_Defining_Character_Literal,
7542 N_Defining_Identifier,
7543 N_Defining_Operator_Symbol,
7545 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
7549 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
7550 -- N_Has_Chars, N_Has_Entity
7555 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
7556 -- N_Has_Chars, N_Has_Entity
7558 N_Character_Literal,
7560 -- N_Binary_Op, N_Op, N_Subexpr,
7561 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
7568 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
7569 -- N_Has_Etype, N_Has_Chars, N_Has_Entity, N_Multiplying_Operator
7576 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
7577 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
7581 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
7582 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean, N_Op_Compare
7591 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
7592 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
7597 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
7598 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
7604 N_Op_Shift_Right_Arithmetic,
7606 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
7607 -- N_Has_Chars, N_Has_Entity
7614 -- N_Subexpr, N_Has_Etype, N_Has_Entity
7616 N_Attribute_Reference,
7618 -- N_Subexpr, N_Has_Etype, N_Membership_Test
7623 -- N_Subexpr, N_Has_Etype, N_Short_Circuit
7628 -- N_Subexpr, N_Has_Etype
7630 N_Conditional_Expression,
7631 N_Explicit_Dereference,
7632 N_Expression_With_Actions,
7634 N_Indexed_Component,
7637 N_Procedure_Call_Statement,
7638 N_Qualified_Expression,
7639 N_Quantified_Expression,
7641 -- N_Raise_xxx_Error, N_Subexpr, N_Has_Etype
7643 N_Raise_Constraint_Error,
7644 N_Raise_Program_Error,
7645 N_Raise_Storage_Error,
7647 -- N_Subexpr, N_Has_Etype
7652 N_Extension_Aggregate,
7656 N_Selected_Component,
7661 N_Unchecked_Expression,
7662 N_Unchecked_Type_Conversion,
7666 N_Subtype_Indication,
7670 N_Component_Declaration,
7671 N_Entry_Declaration,
7672 N_Expression_Function,
7673 N_Formal_Object_Declaration,
7674 N_Formal_Type_Declaration,
7675 N_Full_Type_Declaration,
7676 N_Incomplete_Type_Declaration,
7677 N_Iterator_Specification,
7678 N_Loop_Parameter_Specification,
7679 N_Object_Declaration,
7680 N_Protected_Type_Declaration,
7681 N_Private_Extension_Declaration,
7682 N_Private_Type_Declaration,
7683 N_Subtype_Declaration,
7685 -- N_Subprogram_Specification, N_Declaration
7687 N_Function_Specification,
7688 N_Procedure_Specification,
7690 -- N_Access_To_Subprogram_Definition
7692 N_Access_Function_Definition,
7693 N_Access_Procedure_Definition,
7695 -- N_Later_Decl_Item
7697 N_Task_Type_Declaration,
7699 -- N_Body_Stub, N_Later_Decl_Item
7701 N_Package_Body_Stub,
7702 N_Protected_Body_Stub,
7703 N_Subprogram_Body_Stub,
7706 -- N_Generic_Instantiation, N_Later_Decl_Item
7707 -- N_Subprogram_Instantiation
7709 N_Function_Instantiation,
7710 N_Procedure_Instantiation,
7712 -- N_Generic_Instantiation, N_Later_Decl_Item
7714 N_Package_Instantiation,
7716 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
7721 -- N_Later_Decl_Item, N_Proper_Body
7726 -- N_Later_Decl_Item
7728 N_Implicit_Label_Declaration,
7729 N_Package_Declaration,
7730 N_Single_Task_Declaration,
7731 N_Subprogram_Declaration,
7732 N_Use_Package_Clause,
7734 -- N_Generic_Declaration, N_Later_Decl_Item
7736 N_Generic_Package_Declaration,
7737 N_Generic_Subprogram_Declaration,
7739 -- N_Array_Type_Definition
7741 N_Constrained_Array_Definition,
7742 N_Unconstrained_Array_Definition,
7744 -- N_Renaming_Declaration
7746 N_Exception_Renaming_Declaration,
7747 N_Object_Renaming_Declaration,
7748 N_Package_Renaming_Declaration,
7749 N_Subprogram_Renaming_Declaration,
7751 -- N_Generic_Renaming_Declaration, N_Renaming_Declaration
7753 N_Generic_Function_Renaming_Declaration,
7754 N_Generic_Package_Renaming_Declaration,
7755 N_Generic_Procedure_Renaming_Declaration,
7757 -- N_Statement_Other_Than_Procedure_Call
7761 N_Assignment_Statement,
7762 N_Asynchronous_Select,
7766 N_Conditional_Entry_Call,
7768 -- N_Statement_Other_Than_Procedure_Call, N_Delay_Statement
7770 N_Delay_Relative_Statement,
7771 N_Delay_Until_Statement,
7773 -- N_Statement_Other_Than_Procedure_Call
7775 N_Entry_Call_Statement,
7781 N_Requeue_Statement,
7782 N_Return_Statement, -- renamed as N_Simple_Return_Statement below
7783 N_Extended_Return_Statement,
7787 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
7794 N_Accept_Alternative,
7795 N_Delay_Alternative,
7797 N_Entry_Body_Formal_Part,
7799 N_Terminate_Alternative,
7801 -- N_Formal_Subprogram_Declaration
7803 N_Formal_Abstract_Subprogram_Declaration,
7804 N_Formal_Concrete_Subprogram_Declaration,
7806 -- N_Push_xxx_Label, N_Push_Pop_xxx_Label
7808 N_Push_Constraint_Error_Label,
7809 N_Push_Program_Error_Label,
7810 N_Push_Storage_Error_Label,
7812 -- N_Pop_xxx_Label, N_Push_Pop_xxx_Label
7814 N_Pop_Constraint_Error_Label,
7815 N_Pop_Program_Error_Label,
7816 N_Pop_Storage_Error_Label,
7820 N_SCIL_Dispatch_Table_Tag_Init,
7821 N_SCIL_Dispatching_Call,
7822 N_SCIL_Membership_Test,
7824 -- Other nodes (not part of any subtype class)
7827 N_Abstract_Subprogram_Declaration,
7828 N_Access_Definition,
7829 N_Access_To_Object_Definition,
7830 N_Aspect_Specification,
7831 N_Case_Expression_Alternative,
7832 N_Case_Statement_Alternative,
7834 N_Compilation_Unit_Aux,
7835 N_Component_Association,
7836 N_Component_Definition,
7839 N_Derived_Type_Definition,
7840 N_Decimal_Fixed_Point_Definition,
7841 N_Defining_Program_Unit_Name,
7844 N_Digits_Constraint,
7845 N_Discriminant_Association,
7846 N_Discriminant_Specification,
7847 N_Enumeration_Type_Definition,
7849 N_Entry_Call_Alternative,
7850 N_Entry_Index_Specification,
7851 N_Exception_Declaration,
7852 N_Exception_Handler,
7853 N_Floating_Point_Definition,
7854 N_Formal_Decimal_Fixed_Point_Definition,
7855 N_Formal_Derived_Type_Definition,
7856 N_Formal_Discrete_Type_Definition,
7857 N_Formal_Floating_Point_Definition,
7858 N_Formal_Modular_Type_Definition,
7859 N_Formal_Ordinary_Fixed_Point_Definition,
7860 N_Formal_Package_Declaration,
7861 N_Formal_Private_Type_Definition,
7862 N_Formal_Incomplete_Type_Definition,
7863 N_Formal_Signed_Integer_Type_Definition,
7865 N_Generic_Association,
7866 N_Handled_Sequence_Of_Statements,
7867 N_Index_Or_Discriminant_Constraint,
7870 N_Modular_Type_Definition,
7871 N_Number_Declaration,
7872 N_Ordinary_Fixed_Point_Definition,
7874 N_Package_Specification,
7875 N_Parameter_Association,
7876 N_Parameter_Specification,
7878 N_Protected_Definition,
7880 N_Real_Range_Specification,
7881 N_Record_Definition,
7882 N_Signed_Integer_Type_Definition,
7883 N_Single_Protected_Declaration,
7886 N_Triggering_Alternative,
7888 N_Validate_Unchecked_Conversion,
7894 for Node_Kind'Size use 8;
7895 -- The data structures in Atree assume this!
7897 ----------------------------
7898 -- Node Class Definitions --
7899 ----------------------------
7901 subtype N_Access_To_Subprogram_Definition is Node_Kind range
7902 N_Access_Function_Definition ..
7903 N_Access_Procedure_Definition;
7905 subtype N_Array_Type_Definition is Node_Kind range
7906 N_Constrained_Array_Definition ..
7907 N_Unconstrained_Array_Definition;
7909 subtype N_Binary_Op is Node_Kind range
7911 N_Op_Shift_Right_Arithmetic;
7913 subtype N_Body_Stub is Node_Kind range
7914 N_Package_Body_Stub ..
7917 subtype N_Declaration is Node_Kind range
7918 N_Component_Declaration ..
7919 N_Procedure_Specification;
7920 -- Note: this includes all constructs normally thought of as declarations
7921 -- except those which are separately grouped as later declarations.
7923 subtype N_Delay_Statement is Node_Kind range
7924 N_Delay_Relative_Statement ..
7925 N_Delay_Until_Statement;
7927 subtype N_Direct_Name is Node_Kind range
7929 N_Character_Literal;
7931 subtype N_Entity is Node_Kind range
7932 N_Defining_Character_Literal ..
7933 N_Defining_Operator_Symbol;
7935 subtype N_Formal_Subprogram_Declaration is Node_Kind range
7936 N_Formal_Abstract_Subprogram_Declaration ..
7937 N_Formal_Concrete_Subprogram_Declaration;
7939 subtype N_Generic_Declaration is Node_Kind range
7940 N_Generic_Package_Declaration ..
7941 N_Generic_Subprogram_Declaration;
7943 subtype N_Generic_Instantiation is Node_Kind range
7944 N_Function_Instantiation ..
7945 N_Package_Instantiation;
7947 subtype N_Generic_Renaming_Declaration is Node_Kind range
7948 N_Generic_Function_Renaming_Declaration ..
7949 N_Generic_Procedure_Renaming_Declaration;
7951 subtype N_Has_Chars is Node_Kind range
7952 N_Attribute_Definition_Clause ..
7955 subtype N_Has_Entity is Node_Kind range
7957 N_Attribute_Reference;
7958 -- Nodes that have Entity fields
7959 -- Warning: DOES NOT INCLUDE N_Freeze_Entity, N_Aspect_Specification,
7960 -- or N_Attribute_Definition_Clause.
7962 subtype N_Has_Etype is Node_Kind range
7964 N_Subtype_Indication;
7966 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
7970 subtype N_Multiplying_Operator is Node_Kind range
7974 subtype N_Later_Decl_Item is Node_Kind range
7975 N_Task_Type_Declaration ..
7976 N_Generic_Subprogram_Declaration;
7977 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and includes
7978 -- only those items which can appear as later declarative items. This also
7979 -- includes N_Implicit_Label_Declaration which is not specifically in the
7980 -- grammar but may appear as a valid later declarative items. It does NOT
7981 -- include N_Pragma which can also appear among later declarative items.
7982 -- It does however include N_Protected_Body, which is a bit peculiar, but
7983 -- harmless since this cannot appear in Ada 83 mode anyway.
7985 subtype N_Membership_Test is Node_Kind range
7989 subtype N_Op is Node_Kind range
7993 subtype N_Op_Boolean is Node_Kind range
7996 -- Binary operators which take operands of a boolean type, and yield
7997 -- a result of a boolean type.
7999 subtype N_Op_Compare is Node_Kind range
8003 subtype N_Op_Shift is Node_Kind range
8005 N_Op_Shift_Right_Arithmetic;
8007 subtype N_Proper_Body is Node_Kind range
8011 subtype N_Push_xxx_Label is Node_Kind range
8012 N_Push_Constraint_Error_Label ..
8013 N_Push_Storage_Error_Label;
8015 subtype N_Pop_xxx_Label is Node_Kind range
8016 N_Pop_Constraint_Error_Label ..
8017 N_Pop_Storage_Error_Label;
8019 subtype N_Push_Pop_xxx_Label is Node_Kind range
8020 N_Push_Constraint_Error_Label ..
8021 N_Pop_Storage_Error_Label;
8023 subtype N_Raise_xxx_Error is Node_Kind range
8024 N_Raise_Constraint_Error ..
8025 N_Raise_Storage_Error;
8027 subtype N_Renaming_Declaration is Node_Kind range
8028 N_Exception_Renaming_Declaration ..
8029 N_Generic_Procedure_Renaming_Declaration;
8031 subtype N_Representation_Clause is Node_Kind range
8033 N_Attribute_Definition_Clause;
8035 subtype N_Short_Circuit is Node_Kind range
8039 subtype N_SCIL_Node is Node_Kind range
8040 N_SCIL_Dispatch_Table_Tag_Init ..
8041 N_SCIL_Membership_Test;
8043 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
8044 N_Abort_Statement ..
8046 -- Note that this includes all statement types except for the cases of the
8047 -- N_Procedure_Call_Statement which is considered to be a subexpression
8048 -- (since overloading is possible, so it needs to go through the normal
8049 -- overloading resolution for expressions).
8051 subtype N_Subprogram_Instantiation is Node_Kind range
8052 N_Function_Instantiation ..
8053 N_Procedure_Instantiation;
8055 subtype N_Has_Condition is Node_Kind range
8057 N_Terminate_Alternative;
8058 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
8060 subtype N_Subexpr is Node_Kind range
8062 N_Unchecked_Type_Conversion;
8063 -- Nodes with expression fields
8065 subtype N_Subprogram_Specification is Node_Kind range
8066 N_Function_Specification ..
8067 N_Procedure_Specification;
8069 subtype N_Unary_Op is Node_Kind range
8073 subtype N_Unit_Body is Node_Kind range
8077 ---------------------------
8078 -- Node Access Functions --
8079 ---------------------------
8081 -- The following functions return the contents of the indicated field of
8082 -- the node referenced by the argument, which is a Node_Id. They provide
8083 -- logical access to fields in the node which could be accessed using the
8084 -- Atree.Unchecked_Access package, but the idea is always to use these
8085 -- higher level routines which preserve strong typing. In debug mode,
8086 -- these routines check that they are being applied to an appropriate
8087 -- node, as well as checking that the node is in range.
8089 function ABE_Is_Certain
8090 (N : Node_Id) return Boolean; -- Flag18
8092 function Abort_Present
8093 (N : Node_Id) return Boolean; -- Flag15
8095 function Abortable_Part
8096 (N : Node_Id) return Node_Id; -- Node2
8098 function Abstract_Present
8099 (N : Node_Id) return Boolean; -- Flag4
8101 function Accept_Handler_Records
8102 (N : Node_Id) return List_Id; -- List5
8104 function Accept_Statement
8105 (N : Node_Id) return Node_Id; -- Node2
8107 function Access_Definition
8108 (N : Node_Id) return Node_Id; -- Node3
8110 function Access_To_Subprogram_Definition
8111 (N : Node_Id) return Node_Id; -- Node3
8113 function Access_Types_To_Process
8114 (N : Node_Id) return Elist_Id; -- Elist2
8117 (N : Node_Id) return List_Id; -- List1
8119 function Activation_Chain_Entity
8120 (N : Node_Id) return Node_Id; -- Node3
8122 function Acts_As_Spec
8123 (N : Node_Id) return Boolean; -- Flag4
8125 function Actual_Designated_Subtype
8126 (N : Node_Id) return Node_Id; -- Node4
8128 function Address_Warning_Posted
8129 (N : Node_Id) return Boolean; -- Flag18
8131 function Aggregate_Bounds
8132 (N : Node_Id) return Node_Id; -- Node3
8134 function Aliased_Present
8135 (N : Node_Id) return Boolean; -- Flag4
8138 (N : Node_Id) return Boolean; -- Flag11
8140 function All_Present
8141 (N : Node_Id) return Boolean; -- Flag15
8143 function Alternatives
8144 (N : Node_Id) return List_Id; -- List4
8146 function Ancestor_Part
8147 (N : Node_Id) return Node_Id; -- Node3
8149 function Atomic_Sync_Required
8150 (N : Node_Id) return Boolean; -- Flag14
8152 function Array_Aggregate
8153 (N : Node_Id) return Node_Id; -- Node3
8155 function Aspect_Rep_Item
8156 (N : Node_Id) return Node_Id; -- Node2
8158 function Assignment_OK
8159 (N : Node_Id) return Boolean; -- Flag15
8161 function Associated_Node
8162 (N : Node_Id) return Node_Id; -- Node4
8164 function At_End_Proc
8165 (N : Node_Id) return Node_Id; -- Node1
8167 function Attribute_Name
8168 (N : Node_Id) return Name_Id; -- Name2
8170 function Aux_Decls_Node
8171 (N : Node_Id) return Node_Id; -- Node5
8173 function Backwards_OK
8174 (N : Node_Id) return Boolean; -- Flag6
8176 function Bad_Is_Detected
8177 (N : Node_Id) return Boolean; -- Flag15
8180 (N : Node_Id) return Boolean; -- Flag5
8182 function Body_Required
8183 (N : Node_Id) return Boolean; -- Flag13
8185 function Body_To_Inline
8186 (N : Node_Id) return Node_Id; -- Node3
8188 function Box_Present
8189 (N : Node_Id) return Boolean; -- Flag15
8191 function Char_Literal_Value
8192 (N : Node_Id) return Uint; -- Uint2
8195 (N : Node_Id) return Name_Id; -- Name1
8197 function Check_Address_Alignment
8198 (N : Node_Id) return Boolean; -- Flag11
8200 function Choice_Parameter
8201 (N : Node_Id) return Node_Id; -- Node2
8204 (N : Node_Id) return List_Id; -- List1
8206 function Class_Present
8207 (N : Node_Id) return Boolean; -- Flag6
8209 function Comes_From_Extended_Return_Statement
8210 (N : Node_Id) return Boolean; -- Flag18
8212 function Compile_Time_Known_Aggregate
8213 (N : Node_Id) return Boolean; -- Flag18
8215 function Component_Associations
8216 (N : Node_Id) return List_Id; -- List2
8218 function Component_Clauses
8219 (N : Node_Id) return List_Id; -- List3
8221 function Component_Definition
8222 (N : Node_Id) return Node_Id; -- Node4
8224 function Component_Items
8225 (N : Node_Id) return List_Id; -- List3
8227 function Component_List
8228 (N : Node_Id) return Node_Id; -- Node1
8230 function Component_Name
8231 (N : Node_Id) return Node_Id; -- Node1
8233 function Componentwise_Assignment
8234 (N : Node_Id) return Boolean; -- Flag14
8237 (N : Node_Id) return Node_Id; -- Node1
8239 function Condition_Actions
8240 (N : Node_Id) return List_Id; -- List3
8242 function Config_Pragmas
8243 (N : Node_Id) return List_Id; -- List4
8245 function Constant_Present
8246 (N : Node_Id) return Boolean; -- Flag17
8249 (N : Node_Id) return Node_Id; -- Node3
8251 function Constraints
8252 (N : Node_Id) return List_Id; -- List1
8254 function Context_Installed
8255 (N : Node_Id) return Boolean; -- Flag13
8257 function Context_Pending
8258 (N : Node_Id) return Boolean; -- Flag16
8260 function Context_Items
8261 (N : Node_Id) return List_Id; -- List1
8263 function Controlling_Argument
8264 (N : Node_Id) return Node_Id; -- Node1
8266 function Conversion_OK
8267 (N : Node_Id) return Boolean; -- Flag14
8269 function Corresponding_Aspect
8270 (N : Node_Id) return Node_Id; -- Node3
8272 function Corresponding_Body
8273 (N : Node_Id) return Node_Id; -- Node5
8275 function Corresponding_Formal_Spec
8276 (N : Node_Id) return Node_Id; -- Node3
8278 function Corresponding_Generic_Association
8279 (N : Node_Id) return Node_Id; -- Node5
8281 function Corresponding_Integer_Value
8282 (N : Node_Id) return Uint; -- Uint4
8284 function Corresponding_Spec
8285 (N : Node_Id) return Node_Id; -- Node5
8287 function Corresponding_Stub
8288 (N : Node_Id) return Node_Id; -- Node3
8290 function Dcheck_Function
8291 (N : Node_Id) return Entity_Id; -- Node5
8293 function Declarations
8294 (N : Node_Id) return List_Id; -- List2
8296 function Default_Expression
8297 (N : Node_Id) return Node_Id; -- Node5
8299 function Default_Storage_Pool
8300 (N : Node_Id) return Node_Id; -- Node3
8302 function Default_Name
8303 (N : Node_Id) return Node_Id; -- Node2
8305 function Defining_Identifier
8306 (N : Node_Id) return Entity_Id; -- Node1
8308 function Defining_Unit_Name
8309 (N : Node_Id) return Node_Id; -- Node1
8311 function Delay_Alternative
8312 (N : Node_Id) return Node_Id; -- Node4
8314 function Delay_Statement
8315 (N : Node_Id) return Node_Id; -- Node2
8317 function Delta_Expression
8318 (N : Node_Id) return Node_Id; -- Node3
8320 function Digits_Expression
8321 (N : Node_Id) return Node_Id; -- Node2
8323 function Discr_Check_Funcs_Built
8324 (N : Node_Id) return Boolean; -- Flag11
8326 function Discrete_Choices
8327 (N : Node_Id) return List_Id; -- List4
8329 function Discrete_Range
8330 (N : Node_Id) return Node_Id; -- Node4
8332 function Discrete_Subtype_Definition
8333 (N : Node_Id) return Node_Id; -- Node4
8335 function Discrete_Subtype_Definitions
8336 (N : Node_Id) return List_Id; -- List2
8338 function Discriminant_Specifications
8339 (N : Node_Id) return List_Id; -- List4
8341 function Discriminant_Type
8342 (N : Node_Id) return Node_Id; -- Node5
8344 function Do_Accessibility_Check
8345 (N : Node_Id) return Boolean; -- Flag13
8347 function Do_Discriminant_Check
8348 (N : Node_Id) return Boolean; -- Flag13
8350 function Do_Division_Check
8351 (N : Node_Id) return Boolean; -- Flag13
8353 function Do_Length_Check
8354 (N : Node_Id) return Boolean; -- Flag4
8356 function Do_Overflow_Check
8357 (N : Node_Id) return Boolean; -- Flag17
8359 function Do_Range_Check
8360 (N : Node_Id) return Boolean; -- Flag9
8362 function Do_Storage_Check
8363 (N : Node_Id) return Boolean; -- Flag17
8365 function Do_Tag_Check
8366 (N : Node_Id) return Boolean; -- Flag13
8368 function Elaborate_All_Desirable
8369 (N : Node_Id) return Boolean; -- Flag9
8371 function Elaborate_All_Present
8372 (N : Node_Id) return Boolean; -- Flag14
8374 function Elaborate_Desirable
8375 (N : Node_Id) return Boolean; -- Flag11
8377 function Elaborate_Present
8378 (N : Node_Id) return Boolean; -- Flag4
8380 function Elaboration_Boolean
8381 (N : Node_Id) return Node_Id; -- Node2
8383 function Else_Actions
8384 (N : Node_Id) return List_Id; -- List3
8386 function Else_Statements
8387 (N : Node_Id) return List_Id; -- List4
8389 function Elsif_Parts
8390 (N : Node_Id) return List_Id; -- List3
8392 function Enclosing_Variant
8393 (N : Node_Id) return Node_Id; -- Node2
8396 (N : Node_Id) return Node_Id; -- Node4
8399 (N : Node_Id) return Uint; -- Uint5
8402 (N : Node_Id) return Node_Id; -- Node4
8404 function Entity_Or_Associated_Node
8405 (N : Node_Id) return Node_Id; -- Node4
8407 function Entry_Body_Formal_Part
8408 (N : Node_Id) return Node_Id; -- Node5
8410 function Entry_Call_Alternative
8411 (N : Node_Id) return Node_Id; -- Node1
8413 function Entry_Call_Statement
8414 (N : Node_Id) return Node_Id; -- Node1
8416 function Entry_Direct_Name
8417 (N : Node_Id) return Node_Id; -- Node1
8419 function Entry_Index
8420 (N : Node_Id) return Node_Id; -- Node5
8422 function Entry_Index_Specification
8423 (N : Node_Id) return Node_Id; -- Node4
8426 (N : Node_Id) return Node_Id; -- Node5
8428 function Exception_Choices
8429 (N : Node_Id) return List_Id; -- List4
8431 function Exception_Handlers
8432 (N : Node_Id) return List_Id; -- List5
8434 function Exception_Junk
8435 (N : Node_Id) return Boolean; -- Flag8
8437 function Exception_Label
8438 (N : Node_Id) return Node_Id; -- Node5
8440 function Explicit_Actual_Parameter
8441 (N : Node_Id) return Node_Id; -- Node3
8443 function Expansion_Delayed
8444 (N : Node_Id) return Boolean; -- Flag11
8446 function Explicit_Generic_Actual_Parameter
8447 (N : Node_Id) return Node_Id; -- Node1
8450 (N : Node_Id) return Node_Id; -- Node3
8452 function Expressions
8453 (N : Node_Id) return List_Id; -- List1
8456 (N : Node_Id) return Node_Id; -- Node3
8458 function First_Inlined_Subprogram
8459 (N : Node_Id) return Entity_Id; -- Node3
8462 (N : Node_Id) return Boolean; -- Flag5
8464 function First_Named_Actual
8465 (N : Node_Id) return Node_Id; -- Node4
8467 function First_Real_Statement
8468 (N : Node_Id) return Node_Id; -- Node2
8470 function First_Subtype_Link
8471 (N : Node_Id) return Entity_Id; -- Node5
8473 function Float_Truncate
8474 (N : Node_Id) return Boolean; -- Flag11
8476 function Formal_Type_Definition
8477 (N : Node_Id) return Node_Id; -- Node3
8479 function Forwards_OK
8480 (N : Node_Id) return Boolean; -- Flag5
8482 function From_Aspect_Specification
8483 (N : Node_Id) return Boolean; -- Flag13
8485 function From_At_End
8486 (N : Node_Id) return Boolean; -- Flag4
8488 function From_At_Mod
8489 (N : Node_Id) return Boolean; -- Flag4
8491 function From_Default
8492 (N : Node_Id) return Boolean; -- Flag6
8494 function Generic_Associations
8495 (N : Node_Id) return List_Id; -- List3
8497 function Generic_Formal_Declarations
8498 (N : Node_Id) return List_Id; -- List2
8500 function Generic_Parent
8501 (N : Node_Id) return Node_Id; -- Node5
8503 function Generic_Parent_Type
8504 (N : Node_Id) return Node_Id; -- Node4
8506 function Handled_Statement_Sequence
8507 (N : Node_Id) return Node_Id; -- Node4
8509 function Handler_List_Entry
8510 (N : Node_Id) return Node_Id; -- Node2
8512 function Has_Created_Identifier
8513 (N : Node_Id) return Boolean; -- Flag15
8515 function Has_Dynamic_Length_Check
8516 (N : Node_Id) return Boolean; -- Flag10
8518 function Has_Dynamic_Range_Check
8519 (N : Node_Id) return Boolean; -- Flag12
8521 function Has_Init_Expression
8522 (N : Node_Id) return Boolean; -- Flag14
8524 function Has_Local_Raise
8525 (N : Node_Id) return Boolean; -- Flag8
8527 function Has_No_Elaboration_Code
8528 (N : Node_Id) return Boolean; -- Flag17
8530 function Has_Pragma_CPU
8531 (N : Node_Id) return Boolean; -- Flag14
8533 function Has_Pragma_Dispatching_Domain
8534 (N : Node_Id) return Boolean; -- Flag15
8536 function Has_Pragma_Priority
8537 (N : Node_Id) return Boolean; -- Flag6
8539 function Has_Pragma_Suppress_All
8540 (N : Node_Id) return Boolean; -- Flag14
8542 function Has_Private_View
8543 (N : Node_Id) return Boolean; -- Flag11
8545 function Has_Relative_Deadline_Pragma
8546 (N : Node_Id) return Boolean; -- Flag9
8548 function Has_Self_Reference
8549 (N : Node_Id) return Boolean; -- Flag13
8551 function Has_Storage_Size_Pragma
8552 (N : Node_Id) return Boolean; -- Flag5
8554 function Has_Task_Info_Pragma
8555 (N : Node_Id) return Boolean; -- Flag7
8557 function Has_Task_Name_Pragma
8558 (N : Node_Id) return Boolean; -- Flag8
8560 function Has_Wide_Character
8561 (N : Node_Id) return Boolean; -- Flag11
8563 function Has_Wide_Wide_Character
8564 (N : Node_Id) return Boolean; -- Flag13
8566 function Header_Size_Added
8567 (N : Node_Id) return Boolean; -- Flag11
8569 function Hidden_By_Use_Clause
8570 (N : Node_Id) return Elist_Id; -- Elist4
8573 (N : Node_Id) return Node_Id; -- Node2
8576 (N : Node_Id) return Node_Id; -- Node1
8578 function Interface_List
8579 (N : Node_Id) return List_Id; -- List2
8581 function Interface_Present
8582 (N : Node_Id) return Boolean; -- Flag16
8584 function Implicit_With
8585 (N : Node_Id) return Boolean; -- Flag16
8587 function Import_Interface_Present
8588 (N : Node_Id) return Boolean; -- Flag16
8591 (N : Node_Id) return Boolean; -- Flag15
8593 function Includes_Infinities
8594 (N : Node_Id) return Boolean; -- Flag11
8596 function Inherited_Discriminant
8597 (N : Node_Id) return Boolean; -- Flag13
8599 function Instance_Spec
8600 (N : Node_Id) return Node_Id; -- Node5
8603 (N : Node_Id) return Uint; -- Uint3
8605 function Is_Accessibility_Actual
8606 (N : Node_Id) return Boolean; -- Flag13
8608 function Is_Asynchronous_Call_Block
8609 (N : Node_Id) return Boolean; -- Flag7
8611 function Is_Boolean_Aspect
8612 (N : Node_Id) return Boolean; -- Flag16
8614 function Is_Component_Left_Opnd
8615 (N : Node_Id) return Boolean; -- Flag13
8617 function Is_Component_Right_Opnd
8618 (N : Node_Id) return Boolean; -- Flag14
8620 function Is_Controlling_Actual
8621 (N : Node_Id) return Boolean; -- Flag16
8623 function Is_Delayed_Aspect
8624 (N : Node_Id) return Boolean; -- Flag14
8626 function Is_Dynamic_Coextension
8627 (N : Node_Id) return Boolean; -- Flag18
8630 (N : Node_Id) return Boolean; -- Flag13
8632 function Is_Entry_Barrier_Function
8633 (N : Node_Id) return Boolean; -- Flag8
8635 function Is_Expanded_Build_In_Place_Call
8636 (N : Node_Id) return Boolean; -- Flag11
8638 function Is_Folded_In_Parser
8639 (N : Node_Id) return Boolean; -- Flag4
8641 function Is_In_Discriminant_Check
8642 (N : Node_Id) return Boolean; -- Flag11
8644 function Is_Machine_Number
8645 (N : Node_Id) return Boolean; -- Flag11
8647 function Is_Null_Loop
8648 (N : Node_Id) return Boolean; -- Flag16
8650 function Is_Overloaded
8651 (N : Node_Id) return Boolean; -- Flag5
8653 function Is_Power_Of_2_For_Shift
8654 (N : Node_Id) return Boolean; -- Flag13
8656 function Is_Protected_Subprogram_Body
8657 (N : Node_Id) return Boolean; -- Flag7
8659 function Is_Static_Coextension
8660 (N : Node_Id) return Boolean; -- Flag14
8662 function Is_Static_Expression
8663 (N : Node_Id) return Boolean; -- Flag6
8665 function Is_Subprogram_Descriptor
8666 (N : Node_Id) return Boolean; -- Flag16
8668 function Is_Task_Allocation_Block
8669 (N : Node_Id) return Boolean; -- Flag6
8671 function Is_Task_Master
8672 (N : Node_Id) return Boolean; -- Flag5
8674 function Iteration_Scheme
8675 (N : Node_Id) return Node_Id; -- Node2
8677 function Iterator_Specification
8678 (N : Node_Id) return Node_Id; -- Node2
8681 (N : Node_Id) return Entity_Id; -- Node1
8683 function Kill_Range_Check
8684 (N : Node_Id) return Boolean; -- Flag11
8686 function Label_Construct
8687 (N : Node_Id) return Node_Id; -- Node2
8690 (N : Node_Id) return Node_Id; -- Node2
8693 (N : Node_Id) return Node_Id; -- Node4
8696 (N : Node_Id) return Boolean; -- Flag6
8698 function Library_Unit
8699 (N : Node_Id) return Node_Id; -- Node4
8701 function Limited_View_Installed
8702 (N : Node_Id) return Boolean; -- Flag18
8704 function Limited_Present
8705 (N : Node_Id) return Boolean; -- Flag17
8708 (N : Node_Id) return List_Id; -- List1
8710 function Local_Raise_Not_OK
8711 (N : Node_Id) return Boolean; -- Flag7
8713 function Local_Raise_Statements
8714 (N : Node_Id) return Elist_Id; -- Elist1
8716 function Loop_Actions
8717 (N : Node_Id) return List_Id; -- List2
8719 function Loop_Parameter_Specification
8720 (N : Node_Id) return Node_Id; -- Node4
8723 (N : Node_Id) return Node_Id; -- Node1
8726 (N : Node_Id) return Node_Id; -- Node2
8729 (N : Node_Id) return Boolean; -- Flag5
8731 function Must_Be_Byte_Aligned
8732 (N : Node_Id) return Boolean; -- Flag14
8734 function Must_Not_Freeze
8735 (N : Node_Id) return Boolean; -- Flag8
8737 function Must_Not_Override
8738 (N : Node_Id) return Boolean; -- Flag15
8740 function Must_Override
8741 (N : Node_Id) return Boolean; -- Flag14
8744 (N : Node_Id) return Node_Id; -- Node2
8747 (N : Node_Id) return List_Id; -- List2
8749 function Next_Entity
8750 (N : Node_Id) return Node_Id; -- Node2
8752 function Next_Exit_Statement
8753 (N : Node_Id) return Node_Id; -- Node3
8755 function Next_Implicit_With
8756 (N : Node_Id) return Node_Id; -- Node3
8758 function Next_Named_Actual
8759 (N : Node_Id) return Node_Id; -- Node4
8761 function Next_Pragma
8762 (N : Node_Id) return Node_Id; -- Node1
8764 function Next_Rep_Item
8765 (N : Node_Id) return Node_Id; -- Node5
8767 function Next_Use_Clause
8768 (N : Node_Id) return Node_Id; -- Node3
8770 function No_Ctrl_Actions
8771 (N : Node_Id) return Boolean; -- Flag7
8773 function No_Elaboration_Check
8774 (N : Node_Id) return Boolean; -- Flag14
8776 function No_Entities_Ref_In_Spec
8777 (N : Node_Id) return Boolean; -- Flag8
8779 function No_Initialization
8780 (N : Node_Id) return Boolean; -- Flag13
8782 function No_Truncation
8783 (N : Node_Id) return Boolean; -- Flag17
8785 function Null_Present
8786 (N : Node_Id) return Boolean; -- Flag13
8788 function Null_Exclusion_Present
8789 (N : Node_Id) return Boolean; -- Flag11
8791 function Null_Exclusion_In_Return_Present
8792 (N : Node_Id) return Boolean; -- Flag14
8794 function Null_Record_Present
8795 (N : Node_Id) return Boolean; -- Flag17
8797 function Object_Definition
8798 (N : Node_Id) return Node_Id; -- Node4
8801 (N : Node_Id) return Boolean; -- Flag16
8803 function Original_Discriminant
8804 (N : Node_Id) return Node_Id; -- Node2
8806 function Original_Entity
8807 (N : Node_Id) return Entity_Id; -- Node2
8809 function Others_Discrete_Choices
8810 (N : Node_Id) return List_Id; -- List1
8812 function Out_Present
8813 (N : Node_Id) return Boolean; -- Flag17
8815 function Parameter_Associations
8816 (N : Node_Id) return List_Id; -- List3
8818 function Parameter_List_Truncated
8819 (N : Node_Id) return Boolean; -- Flag17
8821 function Parameter_Specifications
8822 (N : Node_Id) return List_Id; -- List3
8824 function Parameter_Type
8825 (N : Node_Id) return Node_Id; -- Node2
8827 function Parent_Spec
8828 (N : Node_Id) return Node_Id; -- Node4
8831 (N : Node_Id) return Node_Id; -- Node2
8833 function Pragma_Argument_Associations
8834 (N : Node_Id) return List_Id; -- List2
8836 function Pragma_Identifier
8837 (N : Node_Id) return Node_Id; -- Node4
8839 function Pragmas_After
8840 (N : Node_Id) return List_Id; -- List5
8842 function Pragmas_Before
8843 (N : Node_Id) return List_Id; -- List4
8846 (N : Node_Id) return Node_Id; -- Node3
8848 function Premature_Use
8849 (N : Node_Id) return Node_Id; -- Node5
8851 function Present_Expr
8852 (N : Node_Id) return Uint; -- Uint3
8855 (N : Node_Id) return Boolean; -- Flag6
8857 function Print_In_Hex
8858 (N : Node_Id) return Boolean; -- Flag13
8860 function Private_Declarations
8861 (N : Node_Id) return List_Id; -- List3
8863 function Private_Present
8864 (N : Node_Id) return Boolean; -- Flag15
8866 function Procedure_To_Call
8867 (N : Node_Id) return Node_Id; -- Node2
8869 function Proper_Body
8870 (N : Node_Id) return Node_Id; -- Node1
8872 function Protected_Definition
8873 (N : Node_Id) return Node_Id; -- Node3
8875 function Protected_Present
8876 (N : Node_Id) return Boolean; -- Flag6
8878 function Raises_Constraint_Error
8879 (N : Node_Id) return Boolean; -- Flag7
8881 function Range_Constraint
8882 (N : Node_Id) return Node_Id; -- Node4
8884 function Range_Expression
8885 (N : Node_Id) return Node_Id; -- Node4
8887 function Real_Range_Specification
8888 (N : Node_Id) return Node_Id; -- Node4
8891 (N : Node_Id) return Ureal; -- Ureal3
8894 (N : Node_Id) return Uint; -- Uint3
8896 function Record_Extension_Part
8897 (N : Node_Id) return Node_Id; -- Node3
8899 function Redundant_Use
8900 (N : Node_Id) return Boolean; -- Flag13
8902 function Renaming_Exception
8903 (N : Node_Id) return Node_Id; -- Node2
8905 function Result_Definition
8906 (N : Node_Id) return Node_Id; -- Node4
8908 function Return_Object_Declarations
8909 (N : Node_Id) return List_Id; -- List3
8911 function Return_Statement_Entity
8912 (N : Node_Id) return Node_Id; -- Node5
8914 function Reverse_Present
8915 (N : Node_Id) return Boolean; -- Flag15
8918 (N : Node_Id) return Node_Id; -- Node3
8920 function Rounded_Result
8921 (N : Node_Id) return Boolean; -- Flag18
8923 function SCIL_Controlling_Tag
8924 (N : Node_Id) return Node_Id; -- Node5
8926 function SCIL_Entity
8927 (N : Node_Id) return Node_Id; -- Node4
8929 function SCIL_Tag_Value
8930 (N : Node_Id) return Node_Id; -- Node5
8932 function SCIL_Target_Prim
8933 (N : Node_Id) return Node_Id; -- Node2
8936 (N : Node_Id) return Node_Id; -- Node3
8938 function Select_Alternatives
8939 (N : Node_Id) return List_Id; -- List1
8941 function Selector_Name
8942 (N : Node_Id) return Node_Id; -- Node2
8944 function Selector_Names
8945 (N : Node_Id) return List_Id; -- List1
8947 function Shift_Count_OK
8948 (N : Node_Id) return Boolean; -- Flag4
8950 function Source_Type
8951 (N : Node_Id) return Entity_Id; -- Node1
8953 function Spec_PPC_List
8954 (N : Node_Id) return Node_Id; -- Node1
8956 function Spec_TC_List
8957 (N : Node_Id) return Node_Id; -- Node2
8959 function Specification
8960 (N : Node_Id) return Node_Id; -- Node1
8963 (N : Node_Id) return Boolean; -- Flag17
8966 (N : Node_Id) return List_Id; -- List3
8968 function Static_Processing_OK
8969 (N : Node_Id) return Boolean; -- Flag4
8971 function Storage_Pool
8972 (N : Node_Id) return Node_Id; -- Node1
8974 function Subpool_Handle_Name
8975 (N : Node_Id) return Node_Id; -- Node4
8978 (N : Node_Id) return String_Id; -- Str3
8980 function Subtype_Indication
8981 (N : Node_Id) return Node_Id; -- Node5
8983 function Subtype_Mark
8984 (N : Node_Id) return Node_Id; -- Node4
8986 function Subtype_Marks
8987 (N : Node_Id) return List_Id; -- List2
8989 function Suppress_Assignment_Checks
8990 (N : Node_Id) return Boolean; -- Flag18
8992 function Suppress_Loop_Warnings
8993 (N : Node_Id) return Boolean; -- Flag17
8995 function Synchronized_Present
8996 (N : Node_Id) return Boolean; -- Flag7
8998 function Tagged_Present
8999 (N : Node_Id) return Boolean; -- Flag15
9001 function Target_Type
9002 (N : Node_Id) return Entity_Id; -- Node2
9004 function Task_Definition
9005 (N : Node_Id) return Node_Id; -- Node3
9007 function Task_Present
9008 (N : Node_Id) return Boolean; -- Flag5
9010 function Then_Actions
9011 (N : Node_Id) return List_Id; -- List2
9013 function Then_Statements
9014 (N : Node_Id) return List_Id; -- List2
9016 function Treat_Fixed_As_Integer
9017 (N : Node_Id) return Boolean; -- Flag14
9019 function Triggering_Alternative
9020 (N : Node_Id) return Node_Id; -- Node1
9022 function Triggering_Statement
9023 (N : Node_Id) return Node_Id; -- Node1
9026 (N : Node_Id) return Elist_Id; -- Elist3
9028 function Type_Definition
9029 (N : Node_Id) return Node_Id; -- Node3
9032 (N : Node_Id) return Node_Id; -- Node2
9034 function Unknown_Discriminants_Present
9035 (N : Node_Id) return Boolean; -- Flag13
9037 function Unreferenced_In_Spec
9038 (N : Node_Id) return Boolean; -- Flag7
9040 function Variant_Part
9041 (N : Node_Id) return Node_Id; -- Node4
9044 (N : Node_Id) return List_Id; -- List1
9046 function Visible_Declarations
9047 (N : Node_Id) return List_Id; -- List2
9049 function Used_Operations
9050 (N : Node_Id) return Elist_Id; -- Elist5
9052 function Was_Originally_Stub
9053 (N : Node_Id) return Boolean; -- Flag13
9055 function Withed_Body
9056 (N : Node_Id) return Node_Id; -- Node1
9058 -- End functions (note used by xsinfo utility program to end processing)
9060 ----------------------------
9061 -- Node Update Procedures --
9062 ----------------------------
9064 -- These are the corresponding node update routines, which again provide
9065 -- a high level logical access with type checking. In addition to setting
9066 -- the indicated field of the node N to the given Val, in the case of
9067 -- tree pointers (List1-4), the parent pointer of the Val node is set to
9068 -- point back to node N. This automates the setting of the parent pointer.
9070 procedure Set_ABE_Is_Certain
9071 (N : Node_Id; Val : Boolean := True); -- Flag18
9073 procedure Set_Abort_Present
9074 (N : Node_Id; Val : Boolean := True); -- Flag15
9076 procedure Set_Abortable_Part
9077 (N : Node_Id; Val : Node_Id); -- Node2
9079 procedure Set_Abstract_Present
9080 (N : Node_Id; Val : Boolean := True); -- Flag4
9082 procedure Set_Accept_Handler_Records
9083 (N : Node_Id; Val : List_Id); -- List5
9085 procedure Set_Accept_Statement
9086 (N : Node_Id; Val : Node_Id); -- Node2
9088 procedure Set_Access_Definition
9089 (N : Node_Id; Val : Node_Id); -- Node3
9091 procedure Set_Access_To_Subprogram_Definition
9092 (N : Node_Id; Val : Node_Id); -- Node3
9094 procedure Set_Access_Types_To_Process
9095 (N : Node_Id; Val : Elist_Id); -- Elist2
9097 procedure Set_Actions
9098 (N : Node_Id; Val : List_Id); -- List1
9100 procedure Set_Activation_Chain_Entity
9101 (N : Node_Id; Val : Node_Id); -- Node3
9103 procedure Set_Acts_As_Spec
9104 (N : Node_Id; Val : Boolean := True); -- Flag4
9106 procedure Set_Actual_Designated_Subtype
9107 (N : Node_Id; Val : Node_Id); -- Node4
9109 procedure Set_Address_Warning_Posted
9110 (N : Node_Id; Val : Boolean := True); -- Flag18
9112 procedure Set_Aggregate_Bounds
9113 (N : Node_Id; Val : Node_Id); -- Node3
9115 procedure Set_Aliased_Present
9116 (N : Node_Id; Val : Boolean := True); -- Flag4
9118 procedure Set_All_Others
9119 (N : Node_Id; Val : Boolean := True); -- Flag11
9121 procedure Set_All_Present
9122 (N : Node_Id; Val : Boolean := True); -- Flag15
9124 procedure Set_Alternatives
9125 (N : Node_Id; Val : List_Id); -- List4
9127 procedure Set_Ancestor_Part
9128 (N : Node_Id; Val : Node_Id); -- Node3
9130 procedure Set_Atomic_Sync_Required
9131 (N : Node_Id; Val : Boolean := True); -- Flag14
9133 procedure Set_Array_Aggregate
9134 (N : Node_Id; Val : Node_Id); -- Node3
9136 procedure Set_Aspect_Rep_Item
9137 (N : Node_Id; Val : Node_Id); -- Node2
9139 procedure Set_Assignment_OK
9140 (N : Node_Id; Val : Boolean := True); -- Flag15
9142 procedure Set_Associated_Node
9143 (N : Node_Id; Val : Node_Id); -- Node4
9145 procedure Set_Attribute_Name
9146 (N : Node_Id; Val : Name_Id); -- Name2
9148 procedure Set_At_End_Proc
9149 (N : Node_Id; Val : Node_Id); -- Node1
9151 procedure Set_Aux_Decls_Node
9152 (N : Node_Id; Val : Node_Id); -- Node5
9154 procedure Set_Backwards_OK
9155 (N : Node_Id; Val : Boolean := True); -- Flag6
9157 procedure Set_Bad_Is_Detected
9158 (N : Node_Id; Val : Boolean := True); -- Flag15
9160 procedure Set_Body_Required
9161 (N : Node_Id; Val : Boolean := True); -- Flag13
9163 procedure Set_Body_To_Inline
9164 (N : Node_Id; Val : Node_Id); -- Node3
9166 procedure Set_Box_Present
9167 (N : Node_Id; Val : Boolean := True); -- Flag15
9169 procedure Set_By_Ref
9170 (N : Node_Id; Val : Boolean := True); -- Flag5
9172 procedure Set_Char_Literal_Value
9173 (N : Node_Id; Val : Uint); -- Uint2
9176 (N : Node_Id; Val : Name_Id); -- Name1
9178 procedure Set_Check_Address_Alignment
9179 (N : Node_Id; Val : Boolean := True); -- Flag11
9181 procedure Set_Choice_Parameter
9182 (N : Node_Id; Val : Node_Id); -- Node2
9184 procedure Set_Choices
9185 (N : Node_Id; Val : List_Id); -- List1
9187 procedure Set_Class_Present
9188 (N : Node_Id; Val : Boolean := True); -- Flag6
9190 procedure Set_Comes_From_Extended_Return_Statement
9191 (N : Node_Id; Val : Boolean := True); -- Flag18
9193 procedure Set_Compile_Time_Known_Aggregate
9194 (N : Node_Id; Val : Boolean := True); -- Flag18
9196 procedure Set_Component_Associations
9197 (N : Node_Id; Val : List_Id); -- List2
9199 procedure Set_Component_Clauses
9200 (N : Node_Id; Val : List_Id); -- List3
9202 procedure Set_Component_Definition
9203 (N : Node_Id; Val : Node_Id); -- Node4
9205 procedure Set_Component_Items
9206 (N : Node_Id; Val : List_Id); -- List3
9208 procedure Set_Component_List
9209 (N : Node_Id; Val : Node_Id); -- Node1
9211 procedure Set_Component_Name
9212 (N : Node_Id; Val : Node_Id); -- Node1
9214 procedure Set_Componentwise_Assignment
9215 (N : Node_Id; Val : Boolean := True); -- Flag14
9217 procedure Set_Condition
9218 (N : Node_Id; Val : Node_Id); -- Node1
9220 procedure Set_Condition_Actions
9221 (N : Node_Id; Val : List_Id); -- List3
9223 procedure Set_Config_Pragmas
9224 (N : Node_Id; Val : List_Id); -- List4
9226 procedure Set_Constant_Present
9227 (N : Node_Id; Val : Boolean := True); -- Flag17
9229 procedure Set_Constraint
9230 (N : Node_Id; Val : Node_Id); -- Node3
9232 procedure Set_Constraints
9233 (N : Node_Id; Val : List_Id); -- List1
9235 procedure Set_Context_Installed
9236 (N : Node_Id; Val : Boolean := True); -- Flag13
9238 procedure Set_Context_Items
9239 (N : Node_Id; Val : List_Id); -- List1
9241 procedure Set_Context_Pending
9242 (N : Node_Id; Val : Boolean := True); -- Flag16
9244 procedure Set_Controlling_Argument
9245 (N : Node_Id; Val : Node_Id); -- Node1
9247 procedure Set_Conversion_OK
9248 (N : Node_Id; Val : Boolean := True); -- Flag14
9250 procedure Set_Corresponding_Aspect
9251 (N : Node_Id; Val : Node_Id); -- Node3
9253 procedure Set_Corresponding_Body
9254 (N : Node_Id; Val : Node_Id); -- Node5
9256 procedure Set_Corresponding_Formal_Spec
9257 (N : Node_Id; Val : Node_Id); -- Node3
9259 procedure Set_Corresponding_Generic_Association
9260 (N : Node_Id; Val : Node_Id); -- Node5
9262 procedure Set_Corresponding_Integer_Value
9263 (N : Node_Id; Val : Uint); -- Uint4
9265 procedure Set_Corresponding_Spec
9266 (N : Node_Id; Val : Node_Id); -- Node5
9268 procedure Set_Corresponding_Stub
9269 (N : Node_Id; Val : Node_Id); -- Node3
9271 procedure Set_Dcheck_Function
9272 (N : Node_Id; Val : Entity_Id); -- Node5
9274 procedure Set_Declarations
9275 (N : Node_Id; Val : List_Id); -- List2
9277 procedure Set_Default_Expression
9278 (N : Node_Id; Val : Node_Id); -- Node5
9280 procedure Set_Default_Storage_Pool
9281 (N : Node_Id; Val : Node_Id); -- Node3
9283 procedure Set_Default_Name
9284 (N : Node_Id; Val : Node_Id); -- Node2
9286 procedure Set_Defining_Identifier
9287 (N : Node_Id; Val : Entity_Id); -- Node1
9289 procedure Set_Defining_Unit_Name
9290 (N : Node_Id; Val : Node_Id); -- Node1
9292 procedure Set_Delay_Alternative
9293 (N : Node_Id; Val : Node_Id); -- Node4
9295 procedure Set_Delay_Statement
9296 (N : Node_Id; Val : Node_Id); -- Node2
9298 procedure Set_Delta_Expression
9299 (N : Node_Id; Val : Node_Id); -- Node3
9301 procedure Set_Digits_Expression
9302 (N : Node_Id; Val : Node_Id); -- Node2
9304 procedure Set_Discr_Check_Funcs_Built
9305 (N : Node_Id; Val : Boolean := True); -- Flag11
9307 procedure Set_Discrete_Choices
9308 (N : Node_Id; Val : List_Id); -- List4
9310 procedure Set_Discrete_Range
9311 (N : Node_Id; Val : Node_Id); -- Node4
9313 procedure Set_Discrete_Subtype_Definition
9314 (N : Node_Id; Val : Node_Id); -- Node4
9316 procedure Set_Discrete_Subtype_Definitions
9317 (N : Node_Id; Val : List_Id); -- List2
9319 procedure Set_Discriminant_Specifications
9320 (N : Node_Id; Val : List_Id); -- List4
9322 procedure Set_Discriminant_Type
9323 (N : Node_Id; Val : Node_Id); -- Node5
9325 procedure Set_Do_Accessibility_Check
9326 (N : Node_Id; Val : Boolean := True); -- Flag13
9328 procedure Set_Do_Discriminant_Check
9329 (N : Node_Id; Val : Boolean := True); -- Flag13
9331 procedure Set_Do_Division_Check
9332 (N : Node_Id; Val : Boolean := True); -- Flag13
9334 procedure Set_Do_Length_Check
9335 (N : Node_Id; Val : Boolean := True); -- Flag4
9337 procedure Set_Do_Overflow_Check
9338 (N : Node_Id; Val : Boolean := True); -- Flag17
9340 procedure Set_Do_Range_Check
9341 (N : Node_Id; Val : Boolean := True); -- Flag9
9343 procedure Set_Do_Storage_Check
9344 (N : Node_Id; Val : Boolean := True); -- Flag17
9346 procedure Set_Do_Tag_Check
9347 (N : Node_Id; Val : Boolean := True); -- Flag13
9349 procedure Set_Elaborate_All_Desirable
9350 (N : Node_Id; Val : Boolean := True); -- Flag9
9352 procedure Set_Elaborate_All_Present
9353 (N : Node_Id; Val : Boolean := True); -- Flag14
9355 procedure Set_Elaborate_Desirable
9356 (N : Node_Id; Val : Boolean := True); -- Flag11
9358 procedure Set_Elaborate_Present
9359 (N : Node_Id; Val : Boolean := True); -- Flag4
9361 procedure Set_Elaboration_Boolean
9362 (N : Node_Id; Val : Node_Id); -- Node2
9364 procedure Set_Else_Actions
9365 (N : Node_Id; Val : List_Id); -- List3
9367 procedure Set_Else_Statements
9368 (N : Node_Id; Val : List_Id); -- List4
9370 procedure Set_Elsif_Parts
9371 (N : Node_Id; Val : List_Id); -- List3
9373 procedure Set_Enclosing_Variant
9374 (N : Node_Id; Val : Node_Id); -- Node2
9376 procedure Set_End_Label
9377 (N : Node_Id; Val : Node_Id); -- Node4
9379 procedure Set_End_Span
9380 (N : Node_Id; Val : Uint); -- Uint5
9382 procedure Set_Entity
9383 (N : Node_Id; Val : Node_Id); -- Node4
9385 procedure Set_Entry_Body_Formal_Part
9386 (N : Node_Id; Val : Node_Id); -- Node5
9388 procedure Set_Entry_Call_Alternative
9389 (N : Node_Id; Val : Node_Id); -- Node1
9391 procedure Set_Entry_Call_Statement
9392 (N : Node_Id; Val : Node_Id); -- Node1
9394 procedure Set_Entry_Direct_Name
9395 (N : Node_Id; Val : Node_Id); -- Node1
9397 procedure Set_Entry_Index
9398 (N : Node_Id; Val : Node_Id); -- Node5
9400 procedure Set_Entry_Index_Specification
9401 (N : Node_Id; Val : Node_Id); -- Node4
9404 (N : Node_Id; Val : Node_Id); -- Node5
9406 procedure Set_Exception_Choices
9407 (N : Node_Id; Val : List_Id); -- List4
9409 procedure Set_Exception_Handlers
9410 (N : Node_Id; Val : List_Id); -- List5
9412 procedure Set_Exception_Junk
9413 (N : Node_Id; Val : Boolean := True); -- Flag8
9415 procedure Set_Exception_Label
9416 (N : Node_Id; Val : Node_Id); -- Node5
9418 procedure Set_Expansion_Delayed
9419 (N : Node_Id; Val : Boolean := True); -- Flag11
9421 procedure Set_Explicit_Actual_Parameter
9422 (N : Node_Id; Val : Node_Id); -- Node3
9424 procedure Set_Explicit_Generic_Actual_Parameter
9425 (N : Node_Id; Val : Node_Id); -- Node1
9427 procedure Set_Expression
9428 (N : Node_Id; Val : Node_Id); -- Node3
9430 procedure Set_Expressions
9431 (N : Node_Id; Val : List_Id); -- List1
9433 procedure Set_First_Bit
9434 (N : Node_Id; Val : Node_Id); -- Node3
9436 procedure Set_First_Inlined_Subprogram
9437 (N : Node_Id; Val : Entity_Id); -- Node3
9439 procedure Set_First_Name
9440 (N : Node_Id; Val : Boolean := True); -- Flag5
9442 procedure Set_First_Named_Actual
9443 (N : Node_Id; Val : Node_Id); -- Node4
9445 procedure Set_First_Real_Statement
9446 (N : Node_Id; Val : Node_Id); -- Node2
9448 procedure Set_First_Subtype_Link
9449 (N : Node_Id; Val : Entity_Id); -- Node5
9451 procedure Set_Float_Truncate
9452 (N : Node_Id; Val : Boolean := True); -- Flag11
9454 procedure Set_Formal_Type_Definition
9455 (N : Node_Id; Val : Node_Id); -- Node3
9457 procedure Set_Forwards_OK
9458 (N : Node_Id; Val : Boolean := True); -- Flag5
9460 procedure Set_From_At_Mod
9461 (N : Node_Id; Val : Boolean := True); -- Flag4
9463 procedure Set_From_Aspect_Specification
9464 (N : Node_Id; Val : Boolean := True); -- Flag13
9466 procedure Set_From_At_End
9467 (N : Node_Id; Val : Boolean := True); -- Flag4
9469 procedure Set_From_Default
9470 (N : Node_Id; Val : Boolean := True); -- Flag6
9472 procedure Set_Generic_Associations
9473 (N : Node_Id; Val : List_Id); -- List3
9475 procedure Set_Generic_Formal_Declarations
9476 (N : Node_Id; Val : List_Id); -- List2
9478 procedure Set_Generic_Parent
9479 (N : Node_Id; Val : Node_Id); -- Node5
9481 procedure Set_Generic_Parent_Type
9482 (N : Node_Id; Val : Node_Id); -- Node4
9484 procedure Set_Handled_Statement_Sequence
9485 (N : Node_Id; Val : Node_Id); -- Node4
9487 procedure Set_Handler_List_Entry
9488 (N : Node_Id; Val : Node_Id); -- Node2
9490 procedure Set_Has_Created_Identifier
9491 (N : Node_Id; Val : Boolean := True); -- Flag15
9493 procedure Set_Has_Dynamic_Length_Check
9494 (N : Node_Id; Val : Boolean := True); -- Flag10
9496 procedure Set_Has_Dynamic_Range_Check
9497 (N : Node_Id; Val : Boolean := True); -- Flag12
9499 procedure Set_Has_Init_Expression
9500 (N : Node_Id; Val : Boolean := True); -- Flag14
9502 procedure Set_Has_Local_Raise
9503 (N : Node_Id; Val : Boolean := True); -- Flag8
9505 procedure Set_Has_No_Elaboration_Code
9506 (N : Node_Id; Val : Boolean := True); -- Flag17
9508 procedure Set_Has_Pragma_CPU
9509 (N : Node_Id; Val : Boolean := True); -- Flag14
9511 procedure Set_Has_Pragma_Dispatching_Domain
9512 (N : Node_Id; Val : Boolean := True); -- Flag15
9514 procedure Set_Has_Pragma_Priority
9515 (N : Node_Id; Val : Boolean := True); -- Flag6
9517 procedure Set_Has_Pragma_Suppress_All
9518 (N : Node_Id; Val : Boolean := True); -- Flag14
9520 procedure Set_Has_Private_View
9521 (N : Node_Id; Val : Boolean := True); -- Flag11
9523 procedure Set_Has_Relative_Deadline_Pragma
9524 (N : Node_Id; Val : Boolean := True); -- Flag9
9526 procedure Set_Has_Self_Reference
9527 (N : Node_Id; Val : Boolean := True); -- Flag13
9529 procedure Set_Has_Storage_Size_Pragma
9530 (N : Node_Id; Val : Boolean := True); -- Flag5
9532 procedure Set_Has_Task_Info_Pragma
9533 (N : Node_Id; Val : Boolean := True); -- Flag7
9535 procedure Set_Has_Task_Name_Pragma
9536 (N : Node_Id; Val : Boolean := True); -- Flag8
9538 procedure Set_Has_Wide_Character
9539 (N : Node_Id; Val : Boolean := True); -- Flag11
9541 procedure Set_Has_Wide_Wide_Character
9542 (N : Node_Id; Val : Boolean := True); -- Flag13
9544 procedure Set_Header_Size_Added
9545 (N : Node_Id; Val : Boolean := True); -- Flag11
9547 procedure Set_Hidden_By_Use_Clause
9548 (N : Node_Id; Val : Elist_Id); -- Elist4
9550 procedure Set_High_Bound
9551 (N : Node_Id; Val : Node_Id); -- Node2
9553 procedure Set_Identifier
9554 (N : Node_Id; Val : Node_Id); -- Node1
9556 procedure Set_Interface_List
9557 (N : Node_Id; Val : List_Id); -- List2
9559 procedure Set_Interface_Present
9560 (N : Node_Id; Val : Boolean := True); -- Flag16
9562 procedure Set_Implicit_With
9563 (N : Node_Id; Val : Boolean := True); -- Flag16
9565 procedure Set_Import_Interface_Present
9566 (N : Node_Id; Val : Boolean := True); -- Flag16
9568 procedure Set_In_Present
9569 (N : Node_Id; Val : Boolean := True); -- Flag15
9571 procedure Set_Includes_Infinities
9572 (N : Node_Id; Val : Boolean := True); -- Flag11
9574 procedure Set_Inherited_Discriminant
9575 (N : Node_Id; Val : Boolean := True); -- Flag13
9577 procedure Set_Instance_Spec
9578 (N : Node_Id; Val : Node_Id); -- Node5
9580 procedure Set_Intval
9581 (N : Node_Id; Val : Uint); -- Uint3
9583 procedure Set_Is_Accessibility_Actual
9584 (N : Node_Id; Val : Boolean := True); -- Flag13
9586 procedure Set_Is_Asynchronous_Call_Block
9587 (N : Node_Id; Val : Boolean := True); -- Flag7
9589 procedure Set_Is_Boolean_Aspect
9590 (N : Node_Id; Val : Boolean := True); -- Flag16
9592 procedure Set_Is_Component_Left_Opnd
9593 (N : Node_Id; Val : Boolean := True); -- Flag13
9595 procedure Set_Is_Component_Right_Opnd
9596 (N : Node_Id; Val : Boolean := True); -- Flag14
9598 procedure Set_Is_Controlling_Actual
9599 (N : Node_Id; Val : Boolean := True); -- Flag16
9601 procedure Set_Is_Delayed_Aspect
9602 (N : Node_Id; Val : Boolean := True); -- Flag14
9604 procedure Set_Is_Dynamic_Coextension
9605 (N : Node_Id; Val : Boolean := True); -- Flag18
9607 procedure Set_Is_Elsif
9608 (N : Node_Id; Val : Boolean := True); -- Flag13
9610 procedure Set_Is_Entry_Barrier_Function
9611 (N : Node_Id; Val : Boolean := True); -- Flag8
9613 procedure Set_Is_Expanded_Build_In_Place_Call
9614 (N : Node_Id; Val : Boolean := True); -- Flag11
9616 procedure Set_Is_Folded_In_Parser
9617 (N : Node_Id; Val : Boolean := True); -- Flag4
9619 procedure Set_Is_In_Discriminant_Check
9620 (N : Node_Id; Val : Boolean := True); -- Flag11
9622 procedure Set_Is_Machine_Number
9623 (N : Node_Id; Val : Boolean := True); -- Flag11
9625 procedure Set_Is_Null_Loop
9626 (N : Node_Id; Val : Boolean := True); -- Flag16
9628 procedure Set_Is_Overloaded
9629 (N : Node_Id; Val : Boolean := True); -- Flag5
9631 procedure Set_Is_Power_Of_2_For_Shift
9632 (N : Node_Id; Val : Boolean := True); -- Flag13
9634 procedure Set_Is_Protected_Subprogram_Body
9635 (N : Node_Id; Val : Boolean := True); -- Flag7
9637 procedure Set_Is_Static_Coextension
9638 (N : Node_Id; Val : Boolean := True); -- Flag14
9640 procedure Set_Is_Static_Expression
9641 (N : Node_Id; Val : Boolean := True); -- Flag6
9643 procedure Set_Is_Subprogram_Descriptor
9644 (N : Node_Id; Val : Boolean := True); -- Flag16
9646 procedure Set_Is_Task_Allocation_Block
9647 (N : Node_Id; Val : Boolean := True); -- Flag6
9649 procedure Set_Is_Task_Master
9650 (N : Node_Id; Val : Boolean := True); -- Flag5
9652 procedure Set_Iteration_Scheme
9653 (N : Node_Id; Val : Node_Id); -- Node2
9655 procedure Set_Iterator_Specification
9656 (N : Node_Id; Val : Node_Id); -- Node2
9659 (N : Node_Id; Val : Entity_Id); -- Node1
9661 procedure Set_Kill_Range_Check
9662 (N : Node_Id; Val : Boolean := True); -- Flag11
9664 procedure Set_Last_Bit
9665 (N : Node_Id; Val : Node_Id); -- Node4
9667 procedure Set_Last_Name
9668 (N : Node_Id; Val : Boolean := True); -- Flag6
9670 procedure Set_Library_Unit
9671 (N : Node_Id; Val : Node_Id); -- Node4
9673 procedure Set_Label_Construct
9674 (N : Node_Id; Val : Node_Id); -- Node2
9676 procedure Set_Left_Opnd
9677 (N : Node_Id; Val : Node_Id); -- Node2
9679 procedure Set_Limited_View_Installed
9680 (N : Node_Id; Val : Boolean := True); -- Flag18
9682 procedure Set_Limited_Present
9683 (N : Node_Id; Val : Boolean := True); -- Flag17
9685 procedure Set_Literals
9686 (N : Node_Id; Val : List_Id); -- List1
9688 procedure Set_Local_Raise_Not_OK
9689 (N : Node_Id; Val : Boolean := True); -- Flag7
9691 procedure Set_Local_Raise_Statements
9692 (N : Node_Id; Val : Elist_Id); -- Elist1
9694 procedure Set_Loop_Actions
9695 (N : Node_Id; Val : List_Id); -- List2
9697 procedure Set_Loop_Parameter_Specification
9698 (N : Node_Id; Val : Node_Id); -- Node4
9700 procedure Set_Low_Bound
9701 (N : Node_Id; Val : Node_Id); -- Node1
9703 procedure Set_Mod_Clause
9704 (N : Node_Id; Val : Node_Id); -- Node2
9706 procedure Set_More_Ids
9707 (N : Node_Id; Val : Boolean := True); -- Flag5
9709 procedure Set_Must_Be_Byte_Aligned
9710 (N : Node_Id; Val : Boolean := True); -- Flag14
9712 procedure Set_Must_Not_Freeze
9713 (N : Node_Id; Val : Boolean := True); -- Flag8
9715 procedure Set_Must_Not_Override
9716 (N : Node_Id; Val : Boolean := True); -- Flag15
9718 procedure Set_Must_Override
9719 (N : Node_Id; Val : Boolean := True); -- Flag14
9722 (N : Node_Id; Val : Node_Id); -- Node2
9725 (N : Node_Id; Val : List_Id); -- List2
9727 procedure Set_Next_Entity
9728 (N : Node_Id; Val : Node_Id); -- Node2
9730 procedure Set_Next_Exit_Statement
9731 (N : Node_Id; Val : Node_Id); -- Node3
9733 procedure Set_Next_Implicit_With
9734 (N : Node_Id; Val : Node_Id); -- Node3
9736 procedure Set_Next_Named_Actual
9737 (N : Node_Id; Val : Node_Id); -- Node4
9739 procedure Set_Next_Pragma
9740 (N : Node_Id; Val : Node_Id); -- Node1
9742 procedure Set_Next_Rep_Item
9743 (N : Node_Id; Val : Node_Id); -- Node5
9745 procedure Set_Next_Use_Clause
9746 (N : Node_Id; Val : Node_Id); -- Node3
9748 procedure Set_No_Ctrl_Actions
9749 (N : Node_Id; Val : Boolean := True); -- Flag7
9751 procedure Set_No_Elaboration_Check
9752 (N : Node_Id; Val : Boolean := True); -- Flag14
9754 procedure Set_No_Entities_Ref_In_Spec
9755 (N : Node_Id; Val : Boolean := True); -- Flag8
9757 procedure Set_No_Initialization
9758 (N : Node_Id; Val : Boolean := True); -- Flag13
9760 procedure Set_No_Truncation
9761 (N : Node_Id; Val : Boolean := True); -- Flag17
9763 procedure Set_Null_Present
9764 (N : Node_Id; Val : Boolean := True); -- Flag13
9766 procedure Set_Null_Exclusion_Present
9767 (N : Node_Id; Val : Boolean := True); -- Flag11
9769 procedure Set_Null_Exclusion_In_Return_Present
9770 (N : Node_Id; Val : Boolean := True); -- Flag14
9772 procedure Set_Null_Record_Present
9773 (N : Node_Id; Val : Boolean := True); -- Flag17
9775 procedure Set_Object_Definition
9776 (N : Node_Id; Val : Node_Id); -- Node4
9778 procedure Set_Of_Present
9779 (N : Node_Id; Val : Boolean := True); -- Flag16
9781 procedure Set_Original_Discriminant
9782 (N : Node_Id; Val : Node_Id); -- Node2
9784 procedure Set_Original_Entity
9785 (N : Node_Id; Val : Entity_Id); -- Node2
9787 procedure Set_Others_Discrete_Choices
9788 (N : Node_Id; Val : List_Id); -- List1
9790 procedure Set_Out_Present
9791 (N : Node_Id; Val : Boolean := True); -- Flag17
9793 procedure Set_Parameter_Associations
9794 (N : Node_Id; Val : List_Id); -- List3
9796 procedure Set_Parameter_List_Truncated
9797 (N : Node_Id; Val : Boolean := True); -- Flag17
9799 procedure Set_Parameter_Specifications
9800 (N : Node_Id; Val : List_Id); -- List3
9802 procedure Set_Parameter_Type
9803 (N : Node_Id; Val : Node_Id); -- Node2
9805 procedure Set_Parent_Spec
9806 (N : Node_Id; Val : Node_Id); -- Node4
9808 procedure Set_Position
9809 (N : Node_Id; Val : Node_Id); -- Node2
9811 procedure Set_Pragma_Argument_Associations
9812 (N : Node_Id; Val : List_Id); -- List2
9814 procedure Set_Pragma_Identifier
9815 (N : Node_Id; Val : Node_Id); -- Node4
9817 procedure Set_Pragmas_After
9818 (N : Node_Id; Val : List_Id); -- List5
9820 procedure Set_Pragmas_Before
9821 (N : Node_Id; Val : List_Id); -- List4
9823 procedure Set_Prefix
9824 (N : Node_Id; Val : Node_Id); -- Node3
9826 procedure Set_Premature_Use
9827 (N : Node_Id; Val : Node_Id); -- Node5
9829 procedure Set_Present_Expr
9830 (N : Node_Id; Val : Uint); -- Uint3
9832 procedure Set_Prev_Ids
9833 (N : Node_Id; Val : Boolean := True); -- Flag6
9835 procedure Set_Print_In_Hex
9836 (N : Node_Id; Val : Boolean := True); -- Flag13
9838 procedure Set_Private_Declarations
9839 (N : Node_Id; Val : List_Id); -- List3
9841 procedure Set_Private_Present
9842 (N : Node_Id; Val : Boolean := True); -- Flag15
9844 procedure Set_Procedure_To_Call
9845 (N : Node_Id; Val : Node_Id); -- Node2
9847 procedure Set_Proper_Body
9848 (N : Node_Id; Val : Node_Id); -- Node1
9850 procedure Set_Protected_Definition
9851 (N : Node_Id; Val : Node_Id); -- Node3
9853 procedure Set_Protected_Present
9854 (N : Node_Id; Val : Boolean := True); -- Flag6
9856 procedure Set_Raises_Constraint_Error
9857 (N : Node_Id; Val : Boolean := True); -- Flag7
9859 procedure Set_Range_Constraint
9860 (N : Node_Id; Val : Node_Id); -- Node4
9862 procedure Set_Range_Expression
9863 (N : Node_Id; Val : Node_Id); -- Node4
9865 procedure Set_Real_Range_Specification
9866 (N : Node_Id; Val : Node_Id); -- Node4
9868 procedure Set_Realval
9869 (N : Node_Id; Val : Ureal); -- Ureal3
9871 procedure Set_Reason
9872 (N : Node_Id; Val : Uint); -- Uint3
9874 procedure Set_Record_Extension_Part
9875 (N : Node_Id; Val : Node_Id); -- Node3
9877 procedure Set_Redundant_Use
9878 (N : Node_Id; Val : Boolean := True); -- Flag13
9880 procedure Set_Renaming_Exception
9881 (N : Node_Id; Val : Node_Id); -- Node2
9883 procedure Set_Result_Definition
9884 (N : Node_Id; Val : Node_Id); -- Node4
9886 procedure Set_Return_Object_Declarations
9887 (N : Node_Id; Val : List_Id); -- List3
9889 procedure Set_Return_Statement_Entity
9890 (N : Node_Id; Val : Node_Id); -- Node5
9892 procedure Set_Reverse_Present
9893 (N : Node_Id; Val : Boolean := True); -- Flag15
9895 procedure Set_Right_Opnd
9896 (N : Node_Id; Val : Node_Id); -- Node3
9898 procedure Set_Rounded_Result
9899 (N : Node_Id; Val : Boolean := True); -- Flag18
9901 procedure Set_SCIL_Controlling_Tag
9902 (N : Node_Id; Val : Node_Id); -- Node5
9904 procedure Set_SCIL_Entity
9905 (N : Node_Id; Val : Node_Id); -- Node4
9907 procedure Set_SCIL_Tag_Value
9908 (N : Node_Id; Val : Node_Id); -- Node5
9910 procedure Set_SCIL_Target_Prim
9911 (N : Node_Id; Val : Node_Id); -- Node2
9914 (N : Node_Id; Val : Node_Id); -- Node3
9916 procedure Set_Select_Alternatives
9917 (N : Node_Id; Val : List_Id); -- List1
9919 procedure Set_Selector_Name
9920 (N : Node_Id; Val : Node_Id); -- Node2
9922 procedure Set_Selector_Names
9923 (N : Node_Id; Val : List_Id); -- List1
9925 procedure Set_Shift_Count_OK
9926 (N : Node_Id; Val : Boolean := True); -- Flag4
9928 procedure Set_Source_Type
9929 (N : Node_Id; Val : Entity_Id); -- Node1
9931 procedure Set_Spec_PPC_List
9932 (N : Node_Id; Val : Node_Id); -- Node1
9934 procedure Set_Spec_TC_List
9935 (N : Node_Id; Val : Node_Id); -- Node2
9937 procedure Set_Specification
9938 (N : Node_Id; Val : Node_Id); -- Node1
9940 procedure Set_Split_PPC
9941 (N : Node_Id; Val : Boolean); -- Flag17
9943 procedure Set_Statements
9944 (N : Node_Id; Val : List_Id); -- List3
9946 procedure Set_Static_Processing_OK
9947 (N : Node_Id; Val : Boolean); -- Flag4
9949 procedure Set_Storage_Pool
9950 (N : Node_Id; Val : Node_Id); -- Node1
9952 procedure Set_Subpool_Handle_Name
9953 (N : Node_Id; Val : Node_Id); -- Node4
9955 procedure Set_Strval
9956 (N : Node_Id; Val : String_Id); -- Str3
9958 procedure Set_Subtype_Indication
9959 (N : Node_Id; Val : Node_Id); -- Node5
9961 procedure Set_Subtype_Mark
9962 (N : Node_Id; Val : Node_Id); -- Node4
9964 procedure Set_Subtype_Marks
9965 (N : Node_Id; Val : List_Id); -- List2
9967 procedure Set_Suppress_Assignment_Checks
9968 (N : Node_Id; Val : Boolean := True); -- Flag18
9970 procedure Set_Suppress_Loop_Warnings
9971 (N : Node_Id; Val : Boolean := True); -- Flag17
9973 procedure Set_Synchronized_Present
9974 (N : Node_Id; Val : Boolean := True); -- Flag7
9976 procedure Set_Tagged_Present
9977 (N : Node_Id; Val : Boolean := True); -- Flag15
9979 procedure Set_Target_Type
9980 (N : Node_Id; Val : Entity_Id); -- Node2
9982 procedure Set_Task_Definition
9983 (N : Node_Id; Val : Node_Id); -- Node3
9985 procedure Set_Task_Present
9986 (N : Node_Id; Val : Boolean := True); -- Flag5
9988 procedure Set_Then_Actions
9989 (N : Node_Id; Val : List_Id); -- List2
9991 procedure Set_Then_Statements
9992 (N : Node_Id; Val : List_Id); -- List2
9994 procedure Set_Treat_Fixed_As_Integer
9995 (N : Node_Id; Val : Boolean := True); -- Flag14
9997 procedure Set_Triggering_Alternative
9998 (N : Node_Id; Val : Node_Id); -- Node1
10000 procedure Set_Triggering_Statement
10001 (N : Node_Id; Val : Node_Id); -- Node1
10003 procedure Set_TSS_Elist
10004 (N : Node_Id; Val : Elist_Id); -- Elist3
10006 procedure Set_Type_Definition
10007 (N : Node_Id; Val : Node_Id); -- Node3
10010 (N : Node_Id; Val : Node_Id); -- Node2
10012 procedure Set_Unknown_Discriminants_Present
10013 (N : Node_Id; Val : Boolean := True); -- Flag13
10015 procedure Set_Unreferenced_In_Spec
10016 (N : Node_Id; Val : Boolean := True); -- Flag7
10018 procedure Set_Variant_Part
10019 (N : Node_Id; Val : Node_Id); -- Node4
10021 procedure Set_Variants
10022 (N : Node_Id; Val : List_Id); -- List1
10024 procedure Set_Visible_Declarations
10025 (N : Node_Id; Val : List_Id); -- List2
10027 procedure Set_Used_Operations
10028 (N : Node_Id; Val : Elist_Id); -- Elist5
10030 procedure Set_Was_Originally_Stub
10031 (N : Node_Id; Val : Boolean := True); -- Flag13
10033 procedure Set_Withed_Body
10034 (N : Node_Id; Val : Node_Id); -- Node1
10036 -------------------------
10037 -- Iterator Procedures --
10038 -------------------------
10040 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
10042 procedure Next_Entity (N : in out Node_Id);
10043 procedure Next_Named_Actual (N : in out Node_Id);
10044 procedure Next_Rep_Item (N : in out Node_Id);
10045 procedure Next_Use_Clause (N : in out Node_Id);
10047 -------------------------------------------
10048 -- Miscellaneous Tree Access Subprograms --
10049 -------------------------------------------
10051 function End_Location (N : Node_Id) return Source_Ptr;
10052 -- N is an N_If_Statement or N_Case_Statement node, and this function
10053 -- returns the location of the IF token in the END IF sequence by
10054 -- translating the value of the End_Span field.
10056 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
10057 -- N is an N_If_Statement or N_Case_Statement node. This procedure sets
10058 -- the End_Span field to correspond to the given value S. In other words,
10059 -- End_Span is set to the difference between S and Sloc (N), the starting
10062 function Get_Pragma_Arg (Arg : Node_Id) return Node_Id;
10063 -- Given an argument to a pragma Arg, this function returns the expression
10064 -- for the argument. This is Arg itself, or, in the case where Arg is a
10065 -- pragma argument association node, the expression from this node.
10067 --------------------------------
10068 -- Node_Kind Membership Tests --
10069 --------------------------------
10071 -- The following functions allow a convenient notation for testing whether
10072 -- a Node_Kind value matches any one of a list of possible values. In each
10073 -- case True is returned if the given T argument is equal to any of the V
10074 -- arguments. Note that there is a similar set of functions defined in
10075 -- Atree where the first argument is a Node_Id whose Nkind field is tested.
10080 V2 : Node_Kind) return Boolean;
10086 V3 : Node_Kind) return Boolean;
10093 V4 : Node_Kind) return Boolean;
10101 V5 : Node_Kind) return Boolean;
10110 V6 : Node_Kind) return Boolean;
10120 V7 : Node_Kind) return Boolean;
10131 V8 : Node_Kind) return Boolean;
10143 V9 : Node_Kind) return Boolean;
10145 pragma Inline (Nkind_In);
10146 -- Inline all above functions
10148 -----------------------
10149 -- Utility Functions --
10150 -----------------------
10152 function Pragma_Name (N : Node_Id) return Name_Id;
10153 pragma Inline (Pragma_Name);
10154 -- Convenient function to obtain Chars field of Pragma_Identifier
10156 -----------------------------
10157 -- Syntactic Parent Tables --
10158 -----------------------------
10160 -- These tables show for each node, and for each of the five fields,
10161 -- whether the corresponding field is syntactic (True) or semantic (False).
10162 -- Unused entries are also set to False.
10164 subtype Field_Num is Natural range 1 .. 5;
10166 Is_Syntactic_Field : constant array (Node_Kind, Field_Num) of Boolean := (
10168 -- Following entries can be built automatically from the sinfo sources
10169 -- using the makeisf utility (currently this program is in spitbol).
10172 (1 => True, -- Chars (Name1)
10173 2 => False, -- Original_Discriminant (Node2-Sem)
10174 3 => False, -- unused
10175 4 => False, -- Entity (Node4-Sem)
10176 5 => False), -- Etype (Node5-Sem)
10178 N_Integer_Literal =>
10179 (1 => False, -- unused
10180 2 => False, -- Original_Entity (Node2-Sem)
10181 3 => True, -- Intval (Uint3)
10182 4 => False, -- unused
10183 5 => False), -- Etype (Node5-Sem)
10186 (1 => False, -- unused
10187 2 => False, -- Original_Entity (Node2-Sem)
10188 3 => True, -- Realval (Ureal3)
10189 4 => False, -- Corresponding_Integer_Value (Uint4-Sem)
10190 5 => False), -- Etype (Node5-Sem)
10192 N_Character_Literal =>
10193 (1 => True, -- Chars (Name1)
10194 2 => True, -- Char_Literal_Value (Uint2)
10195 3 => False, -- unused
10196 4 => False, -- Entity (Node4-Sem)
10197 5 => False), -- Etype (Node5-Sem)
10199 N_String_Literal =>
10200 (1 => False, -- unused
10201 2 => False, -- unused
10202 3 => True, -- Strval (Str3)
10203 4 => False, -- unused
10204 5 => False), -- Etype (Node5-Sem)
10207 (1 => False, -- Next_Pragma (Node1-Sem)
10208 2 => True, -- Pragma_Argument_Associations (List2)
10209 3 => False, -- unused
10210 4 => True, -- Pragma_Identifier (Node4)
10211 5 => False), -- Next_Rep_Item (Node5-Sem)
10213 N_Pragma_Argument_Association =>
10214 (1 => True, -- Chars (Name1)
10215 2 => False, -- unused
10216 3 => True, -- Expression (Node3)
10217 4 => False, -- unused
10218 5 => False), -- unused
10220 N_Defining_Identifier =>
10221 (1 => True, -- Chars (Name1)
10222 2 => False, -- Next_Entity (Node2-Sem)
10223 3 => False, -- Scope (Node3-Sem)
10224 4 => False, -- unused
10225 5 => False), -- Etype (Node5-Sem)
10227 N_Full_Type_Declaration =>
10228 (1 => True, -- Defining_Identifier (Node1)
10229 2 => False, -- unused
10230 3 => True, -- Type_Definition (Node3)
10231 4 => True, -- Discriminant_Specifications (List4)
10232 5 => False), -- unused
10234 N_Subtype_Declaration =>
10235 (1 => True, -- Defining_Identifier (Node1)
10236 2 => False, -- unused
10237 3 => False, -- unused
10238 4 => False, -- Generic_Parent_Type (Node4-Sem)
10239 5 => True), -- Subtype_Indication (Node5)
10241 N_Subtype_Indication =>
10242 (1 => False, -- unused
10243 2 => False, -- unused
10244 3 => True, -- Constraint (Node3)
10245 4 => True, -- Subtype_Mark (Node4)
10246 5 => False), -- Etype (Node5-Sem)
10248 N_Object_Declaration =>
10249 (1 => True, -- Defining_Identifier (Node1)
10250 2 => False, -- Handler_List_Entry (Node2-Sem)
10251 3 => True, -- Expression (Node3)
10252 4 => True, -- Object_Definition (Node4)
10253 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
10255 N_Number_Declaration =>
10256 (1 => True, -- Defining_Identifier (Node1)
10257 2 => False, -- unused
10258 3 => True, -- Expression (Node3)
10259 4 => False, -- unused
10260 5 => False), -- unused
10262 N_Derived_Type_Definition =>
10263 (1 => False, -- unused
10264 2 => True, -- Interface_List (List2)
10265 3 => True, -- Record_Extension_Part (Node3)
10266 4 => False, -- unused
10267 5 => True), -- Subtype_Indication (Node5)
10269 N_Range_Constraint =>
10270 (1 => False, -- unused
10271 2 => False, -- unused
10272 3 => False, -- unused
10273 4 => True, -- Range_Expression (Node4)
10274 5 => False), -- unused
10277 (1 => True, -- Low_Bound (Node1)
10278 2 => True, -- High_Bound (Node2)
10279 3 => False, -- unused
10280 4 => False, -- unused
10281 5 => False), -- Etype (Node5-Sem)
10283 N_Enumeration_Type_Definition =>
10284 (1 => True, -- Literals (List1)
10285 2 => False, -- unused
10286 3 => False, -- unused
10287 4 => True, -- End_Label (Node4)
10288 5 => False), -- unused
10290 N_Defining_Character_Literal =>
10291 (1 => True, -- Chars (Name1)
10292 2 => False, -- Next_Entity (Node2-Sem)
10293 3 => False, -- Scope (Node3-Sem)
10294 4 => False, -- unused
10295 5 => False), -- Etype (Node5-Sem)
10297 N_Signed_Integer_Type_Definition =>
10298 (1 => True, -- Low_Bound (Node1)
10299 2 => True, -- High_Bound (Node2)
10300 3 => False, -- unused
10301 4 => False, -- unused
10302 5 => False), -- unused
10304 N_Modular_Type_Definition =>
10305 (1 => False, -- unused
10306 2 => False, -- unused
10307 3 => True, -- Expression (Node3)
10308 4 => False, -- unused
10309 5 => False), -- unused
10311 N_Floating_Point_Definition =>
10312 (1 => False, -- unused
10313 2 => True, -- Digits_Expression (Node2)
10314 3 => False, -- unused
10315 4 => True, -- Real_Range_Specification (Node4)
10316 5 => False), -- unused
10318 N_Real_Range_Specification =>
10319 (1 => True, -- Low_Bound (Node1)
10320 2 => True, -- High_Bound (Node2)
10321 3 => False, -- unused
10322 4 => False, -- unused
10323 5 => False), -- unused
10325 N_Ordinary_Fixed_Point_Definition =>
10326 (1 => False, -- unused
10327 2 => False, -- unused
10328 3 => True, -- Delta_Expression (Node3)
10329 4 => True, -- Real_Range_Specification (Node4)
10330 5 => False), -- unused
10332 N_Decimal_Fixed_Point_Definition =>
10333 (1 => False, -- unused
10334 2 => True, -- Digits_Expression (Node2)
10335 3 => True, -- Delta_Expression (Node3)
10336 4 => True, -- Real_Range_Specification (Node4)
10337 5 => False), -- unused
10339 N_Digits_Constraint =>
10340 (1 => False, -- unused
10341 2 => True, -- Digits_Expression (Node2)
10342 3 => False, -- unused
10343 4 => True, -- Range_Constraint (Node4)
10344 5 => False), -- unused
10346 N_Unconstrained_Array_Definition =>
10347 (1 => False, -- unused
10348 2 => True, -- Subtype_Marks (List2)
10349 3 => False, -- unused
10350 4 => True, -- Component_Definition (Node4)
10351 5 => False), -- unused
10353 N_Constrained_Array_Definition =>
10354 (1 => False, -- unused
10355 2 => True, -- Discrete_Subtype_Definitions (List2)
10356 3 => False, -- unused
10357 4 => True, -- Component_Definition (Node4)
10358 5 => False), -- unused
10360 N_Component_Definition =>
10361 (1 => False, -- unused
10362 2 => False, -- unused
10363 3 => True, -- Access_Definition (Node3)
10364 4 => False, -- unused
10365 5 => True), -- Subtype_Indication (Node5)
10367 N_Discriminant_Specification =>
10368 (1 => True, -- Defining_Identifier (Node1)
10369 2 => False, -- unused
10370 3 => True, -- Expression (Node3)
10371 4 => False, -- unused
10372 5 => True), -- Discriminant_Type (Node5)
10374 N_Index_Or_Discriminant_Constraint =>
10375 (1 => True, -- Constraints (List1)
10376 2 => False, -- unused
10377 3 => False, -- unused
10378 4 => False, -- unused
10379 5 => False), -- unused
10381 N_Discriminant_Association =>
10382 (1 => True, -- Selector_Names (List1)
10383 2 => False, -- unused
10384 3 => True, -- Expression (Node3)
10385 4 => False, -- unused
10386 5 => False), -- unused
10388 N_Record_Definition =>
10389 (1 => True, -- Component_List (Node1)
10390 2 => True, -- Interface_List (List2)
10391 3 => False, -- unused
10392 4 => True, -- End_Label (Node4)
10393 5 => False), -- unused
10395 N_Component_List =>
10396 (1 => False, -- unused
10397 2 => False, -- unused
10398 3 => True, -- Component_Items (List3)
10399 4 => True, -- Variant_Part (Node4)
10400 5 => False), -- unused
10402 N_Component_Declaration =>
10403 (1 => True, -- Defining_Identifier (Node1)
10404 2 => False, -- unused
10405 3 => True, -- Expression (Node3)
10406 4 => True, -- Component_Definition (Node4)
10407 5 => False), -- unused
10410 (1 => True, -- Variants (List1)
10411 2 => True, -- Name (Node2)
10412 3 => False, -- unused
10413 4 => False, -- unused
10414 5 => False), -- unused
10417 (1 => True, -- Component_List (Node1)
10418 2 => False, -- Enclosing_Variant (Node2-Sem)
10419 3 => False, -- Present_Expr (Uint3-Sem)
10420 4 => True, -- Discrete_Choices (List4)
10421 5 => False), -- Dcheck_Function (Node5-Sem)
10424 (1 => False, -- Others_Discrete_Choices (List1-Sem)
10425 2 => False, -- unused
10426 3 => False, -- unused
10427 4 => False, -- unused
10428 5 => False), -- unused
10430 N_Access_To_Object_Definition =>
10431 (1 => False, -- unused
10432 2 => False, -- unused
10433 3 => False, -- unused
10434 4 => False, -- unused
10435 5 => True), -- Subtype_Indication (Node5)
10437 N_Access_Function_Definition =>
10438 (1 => False, -- unused
10439 2 => False, -- unused
10440 3 => True, -- Parameter_Specifications (List3)
10441 4 => True, -- Result_Definition (Node4)
10442 5 => False), -- unused
10444 N_Access_Procedure_Definition =>
10445 (1 => False, -- unused
10446 2 => False, -- unused
10447 3 => True, -- Parameter_Specifications (List3)
10448 4 => False, -- unused
10449 5 => False), -- unused
10451 N_Access_Definition =>
10452 (1 => False, -- unused
10453 2 => False, -- unused
10454 3 => True, -- Access_To_Subprogram_Definition (Node3)
10455 4 => True, -- Subtype_Mark (Node4)
10456 5 => False), -- unused
10458 N_Incomplete_Type_Declaration =>
10459 (1 => True, -- Defining_Identifier (Node1)
10460 2 => False, -- unused
10461 3 => False, -- unused
10462 4 => True, -- Discriminant_Specifications (List4)
10463 5 => False), -- Premature_Use
10465 N_Explicit_Dereference =>
10466 (1 => False, -- unused
10467 2 => False, -- unused
10468 3 => True, -- Prefix (Node3)
10469 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
10470 5 => False), -- Etype (Node5-Sem)
10472 N_Indexed_Component =>
10473 (1 => True, -- Expressions (List1)
10474 2 => False, -- unused
10475 3 => True, -- Prefix (Node3)
10476 4 => False, -- unused
10477 5 => False), -- Etype (Node5-Sem)
10480 (1 => False, -- unused
10481 2 => False, -- unused
10482 3 => True, -- Prefix (Node3)
10483 4 => True, -- Discrete_Range (Node4)
10484 5 => False), -- Etype (Node5-Sem)
10486 N_Selected_Component =>
10487 (1 => False, -- unused
10488 2 => True, -- Selector_Name (Node2)
10489 3 => True, -- Prefix (Node3)
10490 4 => False, -- unused
10491 5 => False), -- Etype (Node5-Sem)
10493 N_Attribute_Reference =>
10494 (1 => True, -- Expressions (List1)
10495 2 => True, -- Attribute_Name (Name2)
10496 3 => True, -- Prefix (Node3)
10497 4 => False, -- Entity (Node4-Sem)
10498 5 => False), -- Etype (Node5-Sem)
10501 (1 => True, -- Expressions (List1)
10502 2 => True, -- Component_Associations (List2)
10503 3 => False, -- Aggregate_Bounds (Node3-Sem)
10504 4 => False, -- unused
10505 5 => False), -- Etype (Node5-Sem)
10507 N_Component_Association =>
10508 (1 => True, -- Choices (List1)
10509 2 => False, -- Loop_Actions (List2-Sem)
10510 3 => True, -- Expression (Node3)
10511 4 => False, -- unused
10512 5 => False), -- unused
10514 N_Extension_Aggregate =>
10515 (1 => True, -- Expressions (List1)
10516 2 => True, -- Component_Associations (List2)
10517 3 => True, -- Ancestor_Part (Node3)
10518 4 => False, -- unused
10519 5 => False), -- Etype (Node5-Sem)
10522 (1 => False, -- unused
10523 2 => False, -- unused
10524 3 => False, -- unused
10525 4 => False, -- unused
10526 5 => False), -- Etype (Node5-Sem)
10529 (1 => False, -- Actions (List1-Sem)
10530 2 => True, -- Left_Opnd (Node2)
10531 3 => True, -- Right_Opnd (Node3)
10532 4 => False, -- unused
10533 5 => False), -- Etype (Node5-Sem)
10536 (1 => False, -- Actions (List1-Sem)
10537 2 => True, -- Left_Opnd (Node2)
10538 3 => True, -- Right_Opnd (Node3)
10539 4 => False, -- unused
10540 5 => False), -- Etype (Node5-Sem)
10543 (1 => False, -- unused
10544 2 => True, -- Left_Opnd (Node2)
10545 3 => True, -- Right_Opnd (Node3)
10546 4 => True, -- Alternatives (List4)
10547 5 => False), -- Etype (Node5-Sem)
10550 (1 => False, -- unused
10551 2 => True, -- Left_Opnd (Node2)
10552 3 => True, -- Right_Opnd (Node3)
10553 4 => True, -- Alternatives (List4)
10554 5 => False), -- Etype (Node5-Sem)
10557 (1 => True, -- Chars (Name1)
10558 2 => True, -- Left_Opnd (Node2)
10559 3 => True, -- Right_Opnd (Node3)
10560 4 => False, -- Entity (Node4-Sem)
10561 5 => False), -- Etype (Node5-Sem)
10564 (1 => True, -- Chars (Name1)
10565 2 => True, -- Left_Opnd (Node2)
10566 3 => True, -- Right_Opnd (Node3)
10567 4 => False, -- Entity (Node4-Sem)
10568 5 => False), -- Etype (Node5-Sem)
10571 (1 => True, -- Chars (Name1)
10572 2 => True, -- Left_Opnd (Node2)
10573 3 => True, -- Right_Opnd (Node3)
10574 4 => False, -- Entity (Node4-Sem)
10575 5 => False), -- Etype (Node5-Sem)
10578 (1 => True, -- Chars (Name1)
10579 2 => True, -- Left_Opnd (Node2)
10580 3 => True, -- Right_Opnd (Node3)
10581 4 => False, -- Entity (Node4-Sem)
10582 5 => False), -- Etype (Node5-Sem)
10585 (1 => True, -- Chars (Name1)
10586 2 => True, -- Left_Opnd (Node2)
10587 3 => True, -- Right_Opnd (Node3)
10588 4 => False, -- Entity (Node4-Sem)
10589 5 => False), -- Etype (Node5-Sem)
10592 (1 => True, -- Chars (Name1)
10593 2 => True, -- Left_Opnd (Node2)
10594 3 => True, -- Right_Opnd (Node3)
10595 4 => False, -- Entity (Node4-Sem)
10596 5 => False), -- Etype (Node5-Sem)
10599 (1 => True, -- Chars (Name1)
10600 2 => True, -- Left_Opnd (Node2)
10601 3 => True, -- Right_Opnd (Node3)
10602 4 => False, -- Entity (Node4-Sem)
10603 5 => False), -- Etype (Node5-Sem)
10606 (1 => True, -- Chars (Name1)
10607 2 => True, -- Left_Opnd (Node2)
10608 3 => True, -- Right_Opnd (Node3)
10609 4 => False, -- Entity (Node4-Sem)
10610 5 => False), -- Etype (Node5-Sem)
10613 (1 => True, -- Chars (Name1)
10614 2 => True, -- Left_Opnd (Node2)
10615 3 => True, -- Right_Opnd (Node3)
10616 4 => False, -- Entity (Node4-Sem)
10617 5 => False), -- Etype (Node5-Sem)
10620 (1 => True, -- Chars (Name1)
10621 2 => True, -- Left_Opnd (Node2)
10622 3 => True, -- Right_Opnd (Node3)
10623 4 => False, -- Entity (Node4-Sem)
10624 5 => False), -- Etype (Node5-Sem)
10627 (1 => True, -- Chars (Name1)
10628 2 => True, -- Left_Opnd (Node2)
10629 3 => True, -- Right_Opnd (Node3)
10630 4 => False, -- Entity (Node4-Sem)
10631 5 => False), -- Etype (Node5-Sem)
10634 (1 => True, -- Chars (Name1)
10635 2 => True, -- Left_Opnd (Node2)
10636 3 => True, -- Right_Opnd (Node3)
10637 4 => False, -- Entity (Node4-Sem)
10638 5 => False), -- Etype (Node5-Sem)
10641 (1 => True, -- Chars (Name1)
10642 2 => True, -- Left_Opnd (Node2)
10643 3 => True, -- Right_Opnd (Node3)
10644 4 => False, -- Entity (Node4-Sem)
10645 5 => False), -- Etype (Node5-Sem)
10648 (1 => True, -- Chars (Name1)
10649 2 => True, -- Left_Opnd (Node2)
10650 3 => True, -- Right_Opnd (Node3)
10651 4 => False, -- Entity (Node4-Sem)
10652 5 => False), -- Etype (Node5-Sem)
10655 (1 => True, -- Chars (Name1)
10656 2 => True, -- Left_Opnd (Node2)
10657 3 => True, -- Right_Opnd (Node3)
10658 4 => False, -- Entity (Node4-Sem)
10659 5 => False), -- Etype (Node5-Sem)
10662 (1 => True, -- Chars (Name1)
10663 2 => True, -- Left_Opnd (Node2)
10664 3 => True, -- Right_Opnd (Node3)
10665 4 => False, -- Entity (Node4-Sem)
10666 5 => False), -- Etype (Node5-Sem)
10669 (1 => True, -- Chars (Name1)
10670 2 => True, -- Left_Opnd (Node2)
10671 3 => True, -- Right_Opnd (Node3)
10672 4 => False, -- Entity (Node4-Sem)
10673 5 => False), -- Etype (Node5-Sem)
10676 (1 => True, -- Chars (Name1)
10677 2 => False, -- unused
10678 3 => True, -- Right_Opnd (Node3)
10679 4 => False, -- Entity (Node4-Sem)
10680 5 => False), -- Etype (Node5-Sem)
10683 (1 => True, -- Chars (Name1)
10684 2 => False, -- unused
10685 3 => True, -- Right_Opnd (Node3)
10686 4 => False, -- Entity (Node4-Sem)
10687 5 => False), -- Etype (Node5-Sem)
10690 (1 => True, -- Chars (Name1)
10691 2 => False, -- unused
10692 3 => True, -- Right_Opnd (Node3)
10693 4 => False, -- Entity (Node4-Sem)
10694 5 => False), -- Etype (Node5-Sem)
10697 (1 => True, -- Chars (Name1)
10698 2 => False, -- unused
10699 3 => True, -- Right_Opnd (Node3)
10700 4 => False, -- Entity (Node4-Sem)
10701 5 => False), -- Etype (Node5-Sem)
10703 N_Type_Conversion =>
10704 (1 => False, -- unused
10705 2 => False, -- unused
10706 3 => True, -- Expression (Node3)
10707 4 => True, -- Subtype_Mark (Node4)
10708 5 => False), -- Etype (Node5-Sem)
10710 N_Qualified_Expression =>
10711 (1 => False, -- unused
10712 2 => False, -- unused
10713 3 => True, -- Expression (Node3)
10714 4 => True, -- Subtype_Mark (Node4)
10715 5 => False), -- Etype (Node5-Sem)
10717 N_Quantified_Expression =>
10718 (1 => True, -- Condition (Node1)
10719 2 => True, -- Iterator_Specification
10720 3 => False, -- unused
10721 4 => True, -- Loop_Parameter_Specification (Node4)
10722 5 => False), -- Etype (Node5-Sem)
10725 (1 => False, -- Storage_Pool (Node1-Sem)
10726 2 => False, -- Procedure_To_Call (Node2-Sem)
10727 3 => True, -- Expression (Node3)
10728 4 => True, -- Subpool_Handle_Name (Node4)
10729 5 => False), -- Etype (Node5-Sem)
10731 N_Null_Statement =>
10732 (1 => False, -- unused
10733 2 => False, -- unused
10734 3 => False, -- unused
10735 4 => False, -- unused
10736 5 => False), -- unused
10739 (1 => True, -- Identifier (Node1)
10740 2 => False, -- unused
10741 3 => False, -- unused
10742 4 => False, -- unused
10743 5 => False), -- unused
10745 N_Assignment_Statement =>
10746 (1 => False, -- unused
10747 2 => True, -- Name (Node2)
10748 3 => True, -- Expression (Node3)
10749 4 => False, -- unused
10750 5 => False), -- unused
10753 (1 => True, -- Condition (Node1)
10754 2 => True, -- Then_Statements (List2)
10755 3 => True, -- Elsif_Parts (List3)
10756 4 => True, -- Else_Statements (List4)
10757 5 => True), -- End_Span (Uint5)
10760 (1 => True, -- Condition (Node1)
10761 2 => True, -- Then_Statements (List2)
10762 3 => False, -- Condition_Actions (List3-Sem)
10763 4 => False, -- unused
10764 5 => False), -- unused
10766 N_Case_Expression =>
10767 (1 => False, -- unused
10768 2 => False, -- unused
10769 3 => True, -- Expression (Node3)
10770 4 => True, -- Alternatives (List4)
10771 5 => False), -- unused
10773 N_Case_Expression_Alternative =>
10774 (1 => False, -- Actions (List1-Sem)
10775 2 => False, -- unused
10776 3 => True, -- Statements (List3)
10777 4 => True, -- Expression (Node4)
10778 5 => False), -- unused
10780 N_Case_Statement =>
10781 (1 => False, -- unused
10782 2 => False, -- unused
10783 3 => True, -- Expression (Node3)
10784 4 => True, -- Alternatives (List4)
10785 5 => True), -- End_Span (Uint5)
10787 N_Case_Statement_Alternative =>
10788 (1 => False, -- unused
10789 2 => False, -- unused
10790 3 => True, -- Statements (List3)
10791 4 => True, -- Discrete_Choices (List4)
10792 5 => False), -- unused
10794 N_Loop_Statement =>
10795 (1 => True, -- Identifier (Node1)
10796 2 => True, -- Iteration_Scheme (Node2)
10797 3 => True, -- Statements (List3)
10798 4 => True, -- End_Label (Node4)
10799 5 => False), -- unused
10801 N_Iteration_Scheme =>
10802 (1 => True, -- Condition (Node1)
10803 2 => True, -- Iterator_Specification (Node2)
10804 3 => False, -- Condition_Actions (List3-Sem)
10805 4 => True, -- Loop_Parameter_Specification (Node4)
10806 5 => False), -- unused
10808 N_Loop_Parameter_Specification =>
10809 (1 => True, -- Defining_Identifier (Node1)
10810 2 => False, -- unused
10811 3 => False, -- unused
10812 4 => True, -- Discrete_Subtype_Definition (Node4)
10813 5 => False), -- unused
10815 N_Iterator_Specification =>
10816 (1 => True, -- Defining_Identifier (Node1)
10817 2 => True, -- Name (Node2)
10818 3 => False, -- Unused
10819 4 => False, -- Unused
10820 5 => True), -- Subtype_Indication (Node5)
10822 N_Block_Statement =>
10823 (1 => True, -- Identifier (Node1)
10824 2 => True, -- Declarations (List2)
10825 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10826 4 => True, -- Handled_Statement_Sequence (Node4)
10827 5 => False), -- unused
10829 N_Exit_Statement =>
10830 (1 => True, -- Condition (Node1)
10831 2 => True, -- Name (Node2)
10832 3 => False, -- unused
10833 4 => False, -- unused
10834 5 => False), -- unused
10836 N_Goto_Statement =>
10837 (1 => False, -- unused
10838 2 => True, -- Name (Node2)
10839 3 => False, -- unused
10840 4 => False, -- unused
10841 5 => False), -- unused
10843 N_Subprogram_Declaration =>
10844 (1 => True, -- Specification (Node1)
10845 2 => False, -- unused
10846 3 => False, -- Body_To_Inline (Node3-Sem)
10847 4 => False, -- Parent_Spec (Node4-Sem)
10848 5 => False), -- Corresponding_Body (Node5-Sem)
10850 N_Abstract_Subprogram_Declaration =>
10851 (1 => True, -- Specification (Node1)
10852 2 => False, -- unused
10853 3 => False, -- unused
10854 4 => False, -- unused
10855 5 => False), -- unused
10857 N_Function_Specification =>
10858 (1 => True, -- Defining_Unit_Name (Node1)
10859 2 => False, -- Elaboration_Boolean (Node2-Sem)
10860 3 => True, -- Parameter_Specifications (List3)
10861 4 => True, -- Result_Definition (Node4)
10862 5 => False), -- Generic_Parent (Node5-Sem)
10864 N_Procedure_Specification =>
10865 (1 => True, -- Defining_Unit_Name (Node1)
10866 2 => False, -- Elaboration_Boolean (Node2-Sem)
10867 3 => True, -- Parameter_Specifications (List3)
10868 4 => False, -- unused
10869 5 => False), -- Generic_Parent (Node5-Sem)
10872 (1 => True, -- Identifier (Node1)
10873 2 => True, -- Name (Node2)
10874 3 => False, -- unused
10875 4 => False, -- unused
10876 5 => False), -- unused
10878 N_Defining_Program_Unit_Name =>
10879 (1 => True, -- Defining_Identifier (Node1)
10880 2 => True, -- Name (Node2)
10881 3 => False, -- unused
10882 4 => False, -- unused
10883 5 => False), -- unused
10885 N_Operator_Symbol =>
10886 (1 => True, -- Chars (Name1)
10887 2 => False, -- unused
10888 3 => True, -- Strval (Str3)
10889 4 => False, -- Entity (Node4-Sem)
10890 5 => False), -- Etype (Node5-Sem)
10892 N_Defining_Operator_Symbol =>
10893 (1 => True, -- Chars (Name1)
10894 2 => False, -- Next_Entity (Node2-Sem)
10895 3 => False, -- Scope (Node3-Sem)
10896 4 => False, -- unused
10897 5 => False), -- Etype (Node5-Sem)
10899 N_Parameter_Specification =>
10900 (1 => True, -- Defining_Identifier (Node1)
10901 2 => True, -- Parameter_Type (Node2)
10902 3 => True, -- Expression (Node3)
10903 4 => False, -- unused
10904 5 => False), -- Default_Expression (Node5-Sem)
10906 N_Subprogram_Body =>
10907 (1 => True, -- Specification (Node1)
10908 2 => True, -- Declarations (List2)
10909 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10910 4 => True, -- Handled_Statement_Sequence (Node4)
10911 5 => False), -- Corresponding_Spec (Node5-Sem)
10913 N_Expression_Function =>
10914 (1 => True, -- Specification (Node1)
10915 2 => False, -- unused
10916 3 => True, -- Expression (Node3)
10917 4 => False, -- unused
10918 5 => False), -- unused
10920 N_Procedure_Call_Statement =>
10921 (1 => False, -- Controlling_Argument (Node1-Sem)
10922 2 => True, -- Name (Node2)
10923 3 => True, -- Parameter_Associations (List3)
10924 4 => False, -- First_Named_Actual (Node4-Sem)
10925 5 => False), -- Etype (Node5-Sem)
10928 (1 => False, -- Controlling_Argument (Node1-Sem)
10929 2 => True, -- Name (Node2)
10930 3 => True, -- Parameter_Associations (List3)
10931 4 => False, -- First_Named_Actual (Node4-Sem)
10932 5 => False), -- Etype (Node5-Sem)
10934 N_Parameter_Association =>
10935 (1 => False, -- unused
10936 2 => True, -- Selector_Name (Node2)
10937 3 => True, -- Explicit_Actual_Parameter (Node3)
10938 4 => False, -- Next_Named_Actual (Node4-Sem)
10939 5 => False), -- unused
10941 N_Return_Statement =>
10942 (1 => False, -- Storage_Pool (Node1-Sem)
10943 2 => False, -- Procedure_To_Call (Node2-Sem)
10944 3 => True, -- Expression (Node3)
10945 4 => False, -- unused
10946 5 => False), -- Return_Statement_Entity (Node5-Sem)
10948 N_Extended_Return_Statement =>
10949 (1 => False, -- Storage_Pool (Node1-Sem)
10950 2 => False, -- Procedure_To_Call (Node2-Sem)
10951 3 => True, -- Return_Object_Declarations (List3)
10952 4 => True, -- Handled_Statement_Sequence (Node4)
10953 5 => False), -- Return_Statement_Entity (Node5-Sem)
10955 N_Package_Declaration =>
10956 (1 => True, -- Specification (Node1)
10957 2 => False, -- unused
10958 3 => False, -- Activation_Chain_Entity (Node3-Sem)
10959 4 => False, -- Parent_Spec (Node4-Sem)
10960 5 => False), -- Corresponding_Body (Node5-Sem)
10962 N_Package_Specification =>
10963 (1 => True, -- Defining_Unit_Name (Node1)
10964 2 => True, -- Visible_Declarations (List2)
10965 3 => True, -- Private_Declarations (List3)
10966 4 => True, -- End_Label (Node4)
10967 5 => False), -- Generic_Parent (Node5-Sem)
10970 (1 => True, -- Defining_Unit_Name (Node1)
10971 2 => True, -- Declarations (List2)
10972 3 => False, -- unused
10973 4 => True, -- Handled_Statement_Sequence (Node4)
10974 5 => False), -- Corresponding_Spec (Node5-Sem)
10976 N_Private_Type_Declaration =>
10977 (1 => True, -- Defining_Identifier (Node1)
10978 2 => False, -- unused
10979 3 => False, -- unused
10980 4 => True, -- Discriminant_Specifications (List4)
10981 5 => False), -- unused
10983 N_Private_Extension_Declaration =>
10984 (1 => True, -- Defining_Identifier (Node1)
10985 2 => True, -- Interface_List (List2)
10986 3 => False, -- unused
10987 4 => True, -- Discriminant_Specifications (List4)
10988 5 => True), -- Subtype_Indication (Node5)
10990 N_Use_Package_Clause =>
10991 (1 => False, -- unused
10992 2 => True, -- Names (List2)
10993 3 => False, -- Next_Use_Clause (Node3-Sem)
10994 4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
10995 5 => False), -- unused
10997 N_Use_Type_Clause =>
10998 (1 => False, -- unused
10999 2 => True, -- Subtype_Marks (List2)
11000 3 => False, -- Next_Use_Clause (Node3-Sem)
11001 4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
11002 5 => False), -- unused
11004 N_Object_Renaming_Declaration =>
11005 (1 => True, -- Defining_Identifier (Node1)
11006 2 => True, -- Name (Node2)
11007 3 => True, -- Access_Definition (Node3)
11008 4 => True, -- Subtype_Mark (Node4)
11009 5 => False), -- Corresponding_Generic_Association (Node5-Sem)
11011 N_Exception_Renaming_Declaration =>
11012 (1 => True, -- Defining_Identifier (Node1)
11013 2 => True, -- Name (Node2)
11014 3 => False, -- unused
11015 4 => False, -- unused
11016 5 => False), -- unused
11018 N_Package_Renaming_Declaration =>
11019 (1 => True, -- Defining_Unit_Name (Node1)
11020 2 => True, -- Name (Node2)
11021 3 => False, -- unused
11022 4 => False, -- Parent_Spec (Node4-Sem)
11023 5 => False), -- unused
11025 N_Subprogram_Renaming_Declaration =>
11026 (1 => True, -- Specification (Node1)
11027 2 => True, -- Name (Node2)
11028 3 => False, -- Corresponding_Formal_Spec (Node3-Sem)
11029 4 => False, -- Parent_Spec (Node4-Sem)
11030 5 => False), -- Corresponding_Spec (Node5-Sem)
11032 N_Generic_Package_Renaming_Declaration =>
11033 (1 => True, -- Defining_Unit_Name (Node1)
11034 2 => True, -- Name (Node2)
11035 3 => False, -- unused
11036 4 => False, -- Parent_Spec (Node4-Sem)
11037 5 => False), -- unused
11039 N_Generic_Procedure_Renaming_Declaration =>
11040 (1 => True, -- Defining_Unit_Name (Node1)
11041 2 => True, -- Name (Node2)
11042 3 => False, -- unused
11043 4 => False, -- Parent_Spec (Node4-Sem)
11044 5 => False), -- unused
11046 N_Generic_Function_Renaming_Declaration =>
11047 (1 => True, -- Defining_Unit_Name (Node1)
11048 2 => True, -- Name (Node2)
11049 3 => False, -- unused
11050 4 => False, -- Parent_Spec (Node4-Sem)
11051 5 => False), -- unused
11053 N_Task_Type_Declaration =>
11054 (1 => True, -- Defining_Identifier (Node1)
11055 2 => True, -- Interface_List (List2)
11056 3 => True, -- Task_Definition (Node3)
11057 4 => True, -- Discriminant_Specifications (List4)
11058 5 => False), -- Corresponding_Body (Node5-Sem)
11060 N_Single_Task_Declaration =>
11061 (1 => True, -- Defining_Identifier (Node1)
11062 2 => True, -- Interface_List (List2)
11063 3 => True, -- Task_Definition (Node3)
11064 4 => False, -- unused
11065 5 => False), -- unused
11067 N_Task_Definition =>
11068 (1 => False, -- unused
11069 2 => True, -- Visible_Declarations (List2)
11070 3 => True, -- Private_Declarations (List3)
11071 4 => True, -- End_Label (Node4)
11072 5 => False), -- unused
11075 (1 => True, -- Defining_Identifier (Node1)
11076 2 => True, -- Declarations (List2)
11077 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11078 4 => True, -- Handled_Statement_Sequence (Node4)
11079 5 => False), -- Corresponding_Spec (Node5-Sem)
11081 N_Protected_Type_Declaration =>
11082 (1 => True, -- Defining_Identifier (Node1)
11083 2 => True, -- Interface_List (List2)
11084 3 => True, -- Protected_Definition (Node3)
11085 4 => True, -- Discriminant_Specifications (List4)
11086 5 => False), -- Corresponding_Body (Node5-Sem)
11088 N_Single_Protected_Declaration =>
11089 (1 => True, -- Defining_Identifier (Node1)
11090 2 => True, -- Interface_List (List2)
11091 3 => True, -- Protected_Definition (Node3)
11092 4 => False, -- unused
11093 5 => False), -- unused
11095 N_Protected_Definition =>
11096 (1 => False, -- unused
11097 2 => True, -- Visible_Declarations (List2)
11098 3 => True, -- Private_Declarations (List3)
11099 4 => True, -- End_Label (Node4)
11100 5 => False), -- unused
11102 N_Protected_Body =>
11103 (1 => True, -- Defining_Identifier (Node1)
11104 2 => True, -- Declarations (List2)
11105 3 => False, -- unused
11106 4 => True, -- End_Label (Node4)
11107 5 => False), -- Corresponding_Spec (Node5-Sem)
11109 N_Entry_Declaration =>
11110 (1 => True, -- Defining_Identifier (Node1)
11111 2 => False, -- unused
11112 3 => True, -- Parameter_Specifications (List3)
11113 4 => True, -- Discrete_Subtype_Definition (Node4)
11114 5 => False), -- Corresponding_Body (Node5-Sem)
11116 N_Accept_Statement =>
11117 (1 => True, -- Entry_Direct_Name (Node1)
11118 2 => True, -- Declarations (List2)
11119 3 => True, -- Parameter_Specifications (List3)
11120 4 => True, -- Handled_Statement_Sequence (Node4)
11121 5 => True), -- Entry_Index (Node5)
11124 (1 => True, -- Defining_Identifier (Node1)
11125 2 => True, -- Declarations (List2)
11126 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11127 4 => True, -- Handled_Statement_Sequence (Node4)
11128 5 => True), -- Entry_Body_Formal_Part (Node5)
11130 N_Entry_Body_Formal_Part =>
11131 (1 => True, -- Condition (Node1)
11132 2 => False, -- unused
11133 3 => True, -- Parameter_Specifications (List3)
11134 4 => True, -- Entry_Index_Specification (Node4)
11135 5 => False), -- unused
11137 N_Entry_Index_Specification =>
11138 (1 => True, -- Defining_Identifier (Node1)
11139 2 => False, -- unused
11140 3 => False, -- unused
11141 4 => True, -- Discrete_Subtype_Definition (Node4)
11142 5 => False), -- unused
11144 N_Entry_Call_Statement =>
11145 (1 => False, -- unused
11146 2 => True, -- Name (Node2)
11147 3 => True, -- Parameter_Associations (List3)
11148 4 => False, -- First_Named_Actual (Node4-Sem)
11149 5 => False), -- unused
11151 N_Requeue_Statement =>
11152 (1 => False, -- unused
11153 2 => True, -- Name (Node2)
11154 3 => False, -- unused
11155 4 => False, -- unused
11156 5 => False), -- unused
11158 N_Delay_Until_Statement =>
11159 (1 => False, -- unused
11160 2 => False, -- unused
11161 3 => True, -- Expression (Node3)
11162 4 => False, -- unused
11163 5 => False), -- unused
11165 N_Delay_Relative_Statement =>
11166 (1 => False, -- unused
11167 2 => False, -- unused
11168 3 => True, -- Expression (Node3)
11169 4 => False, -- unused
11170 5 => False), -- unused
11172 N_Selective_Accept =>
11173 (1 => True, -- Select_Alternatives (List1)
11174 2 => False, -- unused
11175 3 => False, -- unused
11176 4 => True, -- Else_Statements (List4)
11177 5 => False), -- unused
11179 N_Accept_Alternative =>
11180 (1 => True, -- Condition (Node1)
11181 2 => True, -- Accept_Statement (Node2)
11182 3 => True, -- Statements (List3)
11183 4 => True, -- Pragmas_Before (List4)
11184 5 => False), -- Accept_Handler_Records (List5-Sem)
11186 N_Delay_Alternative =>
11187 (1 => True, -- Condition (Node1)
11188 2 => True, -- Delay_Statement (Node2)
11189 3 => True, -- Statements (List3)
11190 4 => True, -- Pragmas_Before (List4)
11191 5 => False), -- unused
11193 N_Terminate_Alternative =>
11194 (1 => True, -- Condition (Node1)
11195 2 => False, -- unused
11196 3 => False, -- unused
11197 4 => True, -- Pragmas_Before (List4)
11198 5 => True), -- Pragmas_After (List5)
11200 N_Timed_Entry_Call =>
11201 (1 => True, -- Entry_Call_Alternative (Node1)
11202 2 => False, -- unused
11203 3 => False, -- unused
11204 4 => True, -- Delay_Alternative (Node4)
11205 5 => False), -- unused
11207 N_Entry_Call_Alternative =>
11208 (1 => True, -- Entry_Call_Statement (Node1)
11209 2 => False, -- unused
11210 3 => True, -- Statements (List3)
11211 4 => True, -- Pragmas_Before (List4)
11212 5 => False), -- unused
11214 N_Conditional_Entry_Call =>
11215 (1 => True, -- Entry_Call_Alternative (Node1)
11216 2 => False, -- unused
11217 3 => False, -- unused
11218 4 => True, -- Else_Statements (List4)
11219 5 => False), -- unused
11221 N_Asynchronous_Select =>
11222 (1 => True, -- Triggering_Alternative (Node1)
11223 2 => True, -- Abortable_Part (Node2)
11224 3 => False, -- unused
11225 4 => False, -- unused
11226 5 => False), -- unused
11228 N_Triggering_Alternative =>
11229 (1 => True, -- Triggering_Statement (Node1)
11230 2 => False, -- unused
11231 3 => True, -- Statements (List3)
11232 4 => True, -- Pragmas_Before (List4)
11233 5 => False), -- unused
11235 N_Abortable_Part =>
11236 (1 => False, -- unused
11237 2 => False, -- unused
11238 3 => True, -- Statements (List3)
11239 4 => False, -- unused
11240 5 => False), -- unused
11242 N_Abort_Statement =>
11243 (1 => False, -- unused
11244 2 => True, -- Names (List2)
11245 3 => False, -- unused
11246 4 => False, -- unused
11247 5 => False), -- unused
11249 N_Compilation_Unit =>
11250 (1 => True, -- Context_Items (List1)
11251 2 => True, -- Unit (Node2)
11252 3 => False, -- First_Inlined_Subprogram (Node3-Sem)
11253 4 => False, -- Library_Unit (Node4-Sem)
11254 5 => True), -- Aux_Decls_Node (Node5)
11256 N_Compilation_Unit_Aux =>
11257 (1 => True, -- Actions (List1)
11258 2 => True, -- Declarations (List2)
11259 3 => False, -- Default_Storage_Pool (Node3)
11260 4 => True, -- Config_Pragmas (List4)
11261 5 => True), -- Pragmas_After (List5)
11264 (1 => False, -- unused
11265 2 => True, -- Name (Node2)
11266 3 => False, -- unused
11267 4 => False, -- Library_Unit (Node4-Sem)
11268 5 => False), -- Corresponding_Spec (Node5-Sem)
11270 N_Subprogram_Body_Stub =>
11271 (1 => True, -- Specification (Node1)
11272 2 => False, -- unused
11273 3 => False, -- unused
11274 4 => False, -- Library_Unit (Node4-Sem)
11275 5 => False), -- Corresponding_Body (Node5-Sem)
11277 N_Package_Body_Stub =>
11278 (1 => True, -- Defining_Identifier (Node1)
11279 2 => False, -- unused
11280 3 => False, -- unused
11281 4 => False, -- Library_Unit (Node4-Sem)
11282 5 => False), -- Corresponding_Body (Node5-Sem)
11284 N_Task_Body_Stub =>
11285 (1 => True, -- Defining_Identifier (Node1)
11286 2 => False, -- unused
11287 3 => False, -- unused
11288 4 => False, -- Library_Unit (Node4-Sem)
11289 5 => False), -- Corresponding_Body (Node5-Sem)
11291 N_Protected_Body_Stub =>
11292 (1 => True, -- Defining_Identifier (Node1)
11293 2 => False, -- unused
11294 3 => False, -- unused
11295 4 => False, -- Library_Unit (Node4-Sem)
11296 5 => False), -- Corresponding_Body (Node5-Sem)
11299 (1 => True, -- Proper_Body (Node1)
11300 2 => True, -- Name (Node2)
11301 3 => False, -- Corresponding_Stub (Node3-Sem)
11302 4 => False, -- unused
11303 5 => False), -- unused
11305 N_Exception_Declaration =>
11306 (1 => True, -- Defining_Identifier (Node1)
11307 2 => False, -- unused
11308 3 => False, -- Expression (Node3-Sem)
11309 4 => False, -- unused
11310 5 => False), -- unused
11312 N_Handled_Sequence_Of_Statements =>
11313 (1 => True, -- At_End_Proc (Node1)
11314 2 => False, -- First_Real_Statement (Node2-Sem)
11315 3 => True, -- Statements (List3)
11316 4 => True, -- End_Label (Node4)
11317 5 => True), -- Exception_Handlers (List5)
11319 N_Exception_Handler =>
11320 (1 => False, -- Local_Raise_Statements (Elist1)
11321 2 => True, -- Choice_Parameter (Node2)
11322 3 => True, -- Statements (List3)
11323 4 => True, -- Exception_Choices (List4)
11324 5 => False), -- Exception_Label (Node5)
11326 N_Raise_Statement =>
11327 (1 => False, -- unused
11328 2 => True, -- Name (Node2)
11329 3 => True, -- Expression (Node3)
11330 4 => False, -- unused
11331 5 => False), -- unused
11333 N_Generic_Subprogram_Declaration =>
11334 (1 => True, -- Specification (Node1)
11335 2 => True, -- Generic_Formal_Declarations (List2)
11336 3 => False, -- unused
11337 4 => False, -- Parent_Spec (Node4-Sem)
11338 5 => False), -- Corresponding_Body (Node5-Sem)
11340 N_Generic_Package_Declaration =>
11341 (1 => True, -- Specification (Node1)
11342 2 => True, -- Generic_Formal_Declarations (List2)
11343 3 => False, -- Activation_Chain_Entity (Node3-Sem)
11344 4 => False, -- Parent_Spec (Node4-Sem)
11345 5 => False), -- Corresponding_Body (Node5-Sem)
11347 N_Package_Instantiation =>
11348 (1 => True, -- Defining_Unit_Name (Node1)
11349 2 => True, -- Name (Node2)
11350 3 => True, -- Generic_Associations (List3)
11351 4 => False, -- Parent_Spec (Node4-Sem)
11352 5 => False), -- Instance_Spec (Node5-Sem)
11354 N_Procedure_Instantiation =>
11355 (1 => True, -- Defining_Unit_Name (Node1)
11356 2 => True, -- Name (Node2)
11357 3 => True, -- Generic_Associations (List3)
11358 4 => False, -- Parent_Spec (Node4-Sem)
11359 5 => False), -- Instance_Spec (Node5-Sem)
11361 N_Function_Instantiation =>
11362 (1 => True, -- Defining_Unit_Name (Node1)
11363 2 => True, -- Name (Node2)
11364 3 => True, -- Generic_Associations (List3)
11365 4 => False, -- Parent_Spec (Node4-Sem)
11366 5 => False), -- Instance_Spec (Node5-Sem)
11368 N_Generic_Association =>
11369 (1 => True, -- Explicit_Generic_Actual_Parameter (Node1)
11370 2 => True, -- Selector_Name (Node2)
11371 3 => False, -- unused
11372 4 => False, -- unused
11373 5 => False), -- unused
11375 N_Formal_Object_Declaration =>
11376 (1 => True, -- Defining_Identifier (Node1)
11377 2 => False, -- unused
11378 3 => True, -- Access_Definition (Node3)
11379 4 => True, -- Subtype_Mark (Node4)
11380 5 => True), -- Default_Expression (Node5)
11382 N_Formal_Type_Declaration =>
11383 (1 => True, -- Defining_Identifier (Node1)
11384 2 => False, -- unused
11385 3 => True, -- Formal_Type_Definition (Node3)
11386 4 => True, -- Discriminant_Specifications (List4)
11387 5 => False), -- unused
11389 N_Formal_Private_Type_Definition =>
11390 (1 => False, -- unused
11391 2 => False, -- unused
11392 3 => False, -- unused
11393 4 => False, -- unused
11394 5 => False), -- unused
11396 N_Formal_Incomplete_Type_Definition =>
11397 (1 => False, -- unused
11398 2 => False, -- unused
11399 3 => False, -- unused
11400 4 => False, -- unused
11401 5 => False), -- unused
11403 N_Formal_Derived_Type_Definition =>
11404 (1 => False, -- unused
11405 2 => True, -- Interface_List (List2)
11406 3 => False, -- unused
11407 4 => True, -- Subtype_Mark (Node4)
11408 5 => False), -- unused
11410 N_Formal_Discrete_Type_Definition =>
11411 (1 => False, -- unused
11412 2 => False, -- unused
11413 3 => False, -- unused
11414 4 => False, -- unused
11415 5 => False), -- unused
11417 N_Formal_Signed_Integer_Type_Definition =>
11418 (1 => False, -- unused
11419 2 => False, -- unused
11420 3 => False, -- unused
11421 4 => False, -- unused
11422 5 => False), -- unused
11424 N_Formal_Modular_Type_Definition =>
11425 (1 => False, -- unused
11426 2 => False, -- unused
11427 3 => False, -- unused
11428 4 => False, -- unused
11429 5 => False), -- unused
11431 N_Formal_Floating_Point_Definition =>
11432 (1 => False, -- unused
11433 2 => False, -- unused
11434 3 => False, -- unused
11435 4 => False, -- unused
11436 5 => False), -- unused
11438 N_Formal_Ordinary_Fixed_Point_Definition =>
11439 (1 => False, -- unused
11440 2 => False, -- unused
11441 3 => False, -- unused
11442 4 => False, -- unused
11443 5 => False), -- unused
11445 N_Formal_Decimal_Fixed_Point_Definition =>
11446 (1 => False, -- unused
11447 2 => False, -- unused
11448 3 => False, -- unused
11449 4 => False, -- unused
11450 5 => False), -- unused
11452 N_Formal_Concrete_Subprogram_Declaration =>
11453 (1 => True, -- Specification (Node1)
11454 2 => True, -- Default_Name (Node2)
11455 3 => False, -- unused
11456 4 => False, -- unused
11457 5 => False), -- unused
11459 N_Formal_Abstract_Subprogram_Declaration =>
11460 (1 => True, -- Specification (Node1)
11461 2 => True, -- Default_Name (Node2)
11462 3 => False, -- unused
11463 4 => False, -- unused
11464 5 => False), -- unused
11466 N_Formal_Package_Declaration =>
11467 (1 => True, -- Defining_Identifier (Node1)
11468 2 => True, -- Name (Node2)
11469 3 => True, -- Generic_Associations (List3)
11470 4 => False, -- unused
11471 5 => False), -- Instance_Spec (Node5-Sem)
11473 N_Attribute_Definition_Clause =>
11474 (1 => True, -- Chars (Name1)
11475 2 => True, -- Name (Node2)
11476 3 => True, -- Expression (Node3)
11477 4 => False, -- unused
11478 5 => False), -- Next_Rep_Item (Node5-Sem)
11480 N_Aspect_Specification =>
11481 (1 => True, -- Identifier (Node1)
11482 2 => False, -- Aspect_Rep_Item (Node2-Sem)
11483 3 => True, -- Expression (Node3)
11484 4 => False, -- Entity (Node4-Sem)
11485 5 => False), -- Next_Rep_Item (Node5-Sem)
11487 N_Enumeration_Representation_Clause =>
11488 (1 => True, -- Identifier (Node1)
11489 2 => False, -- unused
11490 3 => True, -- Array_Aggregate (Node3)
11491 4 => False, -- unused
11492 5 => False), -- Next_Rep_Item (Node5-Sem)
11494 N_Record_Representation_Clause =>
11495 (1 => True, -- Identifier (Node1)
11496 2 => True, -- Mod_Clause (Node2)
11497 3 => True, -- Component_Clauses (List3)
11498 4 => False, -- unused
11499 5 => False), -- Next_Rep_Item (Node5-Sem)
11501 N_Component_Clause =>
11502 (1 => True, -- Component_Name (Node1)
11503 2 => True, -- Position (Node2)
11504 3 => True, -- First_Bit (Node3)
11505 4 => True, -- Last_Bit (Node4)
11506 5 => False), -- unused
11508 N_Code_Statement =>
11509 (1 => False, -- unused
11510 2 => False, -- unused
11511 3 => True, -- Expression (Node3)
11512 4 => False, -- unused
11513 5 => False), -- unused
11515 N_Op_Rotate_Left =>
11516 (1 => True, -- Chars (Name1)
11517 2 => True, -- Left_Opnd (Node2)
11518 3 => True, -- Right_Opnd (Node3)
11519 4 => False, -- Entity (Node4-Sem)
11520 5 => False), -- Etype (Node5-Sem)
11522 N_Op_Rotate_Right =>
11523 (1 => True, -- Chars (Name1)
11524 2 => True, -- Left_Opnd (Node2)
11525 3 => True, -- Right_Opnd (Node3)
11526 4 => False, -- Entity (Node4-Sem)
11527 5 => False), -- Etype (Node5-Sem)
11530 (1 => True, -- Chars (Name1)
11531 2 => True, -- Left_Opnd (Node2)
11532 3 => True, -- Right_Opnd (Node3)
11533 4 => False, -- Entity (Node4-Sem)
11534 5 => False), -- Etype (Node5-Sem)
11536 N_Op_Shift_Right_Arithmetic =>
11537 (1 => True, -- Chars (Name1)
11538 2 => True, -- Left_Opnd (Node2)
11539 3 => True, -- Right_Opnd (Node3)
11540 4 => False, -- Entity (Node4-Sem)
11541 5 => False), -- Etype (Node5-Sem)
11543 N_Op_Shift_Right =>
11544 (1 => True, -- Chars (Name1)
11545 2 => True, -- Left_Opnd (Node2)
11546 3 => True, -- Right_Opnd (Node3)
11547 4 => False, -- Entity (Node4-Sem)
11548 5 => False), -- Etype (Node5-Sem)
11550 N_Delta_Constraint =>
11551 (1 => False, -- unused
11552 2 => False, -- unused
11553 3 => True, -- Delta_Expression (Node3)
11554 4 => True, -- Range_Constraint (Node4)
11555 5 => False), -- unused
11558 (1 => True, -- Identifier (Node1)
11559 2 => False, -- unused
11560 3 => True, -- Expression (Node3)
11561 4 => False, -- unused
11562 5 => False), -- unused
11565 (1 => False, -- unused
11566 2 => False, -- unused
11567 3 => True, -- Expression (Node3)
11568 4 => True, -- Pragmas_Before (List4)
11569 5 => False), -- unused
11571 N_Conditional_Expression =>
11572 (1 => True, -- Expressions (List1)
11573 2 => False, -- Then_Actions (List2-Sem)
11574 3 => False, -- Else_Actions (List3-Sem)
11575 4 => False, -- unused
11576 5 => False), -- Etype (Node5-Sem)
11579 (1 => False, -- Spec_PPC_List (Node1)
11580 2 => False, -- Spec_TC_List (Node2)
11581 3 => False, -- unused
11582 4 => False, -- unused
11583 5 => False), -- unused
11586 (1 => True, -- Chars (Name1)
11587 2 => True, -- Selector_Name (Node2)
11588 3 => True, -- Prefix (Node3)
11589 4 => False, -- Entity (Node4-Sem)
11590 5 => False), -- Etype (Node5-Sem)
11592 N_Expression_With_Actions =>
11593 (1 => True, -- Actions (List1)
11594 2 => False, -- unused
11595 3 => True, -- Expression (Node3)
11596 4 => False, -- unused
11597 5 => False), -- unused
11599 N_Free_Statement =>
11600 (1 => False, -- Storage_Pool (Node1-Sem)
11601 2 => False, -- Procedure_To_Call (Node2-Sem)
11602 3 => True, -- Expression (Node3)
11603 4 => False, -- Actual_Designated_Subtype (Node4-Sem)
11604 5 => False), -- unused
11607 (1 => True, -- Actions (List1)
11608 2 => False, -- Access_Types_To_Process (Elist2-Sem)
11609 3 => False, -- TSS_Elist (Elist3-Sem)
11610 4 => False, -- Entity (Node4-Sem)
11611 5 => False), -- First_Subtype_Link (Node5-Sem)
11613 N_Implicit_Label_Declaration =>
11614 (1 => True, -- Defining_Identifier (Node1)
11615 2 => False, -- Label_Construct (Node2-Sem)
11616 3 => False, -- unused
11617 4 => False, -- unused
11618 5 => False), -- unused
11620 N_Itype_Reference =>
11621 (1 => False, -- Itype (Node1-Sem)
11622 2 => False, -- unused
11623 3 => False, -- unused
11624 4 => False, -- unused
11625 5 => False), -- unused
11627 N_Raise_Constraint_Error =>
11628 (1 => True, -- Condition (Node1)
11629 2 => False, -- unused
11630 3 => True, -- Reason (Uint3)
11631 4 => False, -- unused
11632 5 => False), -- Etype (Node5-Sem)
11634 N_Raise_Program_Error =>
11635 (1 => True, -- Condition (Node1)
11636 2 => False, -- unused
11637 3 => True, -- Reason (Uint3)
11638 4 => False, -- unused
11639 5 => False), -- Etype (Node5-Sem)
11641 N_Raise_Storage_Error =>
11642 (1 => True, -- Condition (Node1)
11643 2 => False, -- unused
11644 3 => True, -- Reason (Uint3)
11645 4 => False, -- unused
11646 5 => False), -- Etype (Node5-Sem)
11648 N_Push_Constraint_Error_Label =>
11649 (1 => False, -- unused
11650 2 => False, -- unused
11651 3 => False, -- unused
11652 4 => False, -- unused
11653 5 => False), -- unused
11655 N_Push_Program_Error_Label =>
11656 (1 => False, -- Exception_Label
11657 2 => False, -- unused
11658 3 => False, -- unused
11659 4 => False, -- unused
11660 5 => False), -- Exception_Label
11662 N_Push_Storage_Error_Label =>
11663 (1 => False, -- Exception_Label
11664 2 => False, -- unused
11665 3 => False, -- unused
11666 4 => False, -- unused
11667 5 => False), -- Exception_Label
11669 N_Pop_Constraint_Error_Label =>
11670 (1 => False, -- unused
11671 2 => False, -- unused
11672 3 => False, -- unused
11673 4 => False, -- unused
11674 5 => False), -- unused
11676 N_Pop_Program_Error_Label =>
11677 (1 => False, -- unused
11678 2 => False, -- unused
11679 3 => False, -- unused
11680 4 => False, -- unused
11681 5 => False), -- unused
11683 N_Pop_Storage_Error_Label =>
11684 (1 => False, -- unused
11685 2 => False, -- unused
11686 3 => False, -- unused
11687 4 => False, -- unused
11688 5 => False), -- unused
11691 (1 => False, -- unused
11692 2 => False, -- unused
11693 3 => True, -- Prefix (Node3)
11694 4 => False, -- unused
11695 5 => False), -- Etype (Node5-Sem)
11697 N_Subprogram_Info =>
11698 (1 => True, -- Identifier (Node1)
11699 2 => False, -- unused
11700 3 => False, -- unused
11701 4 => False, -- unused
11702 5 => False), -- Etype (Node5-Sem)
11704 N_Unchecked_Expression =>
11705 (1 => False, -- unused
11706 2 => False, -- unused
11707 3 => True, -- Expression (Node3)
11708 4 => False, -- unused
11709 5 => False), -- Etype (Node5-Sem)
11711 N_Unchecked_Type_Conversion =>
11712 (1 => False, -- unused
11713 2 => False, -- unused
11714 3 => True, -- Expression (Node3)
11715 4 => True, -- Subtype_Mark (Node4)
11716 5 => False), -- Etype (Node5-Sem)
11718 N_Validate_Unchecked_Conversion =>
11719 (1 => False, -- Source_Type (Node1-Sem)
11720 2 => False, -- Target_Type (Node2-Sem)
11721 3 => False, -- unused
11722 4 => False, -- unused
11723 5 => False), -- unused
11725 -- Entries for SCIL nodes
11727 N_SCIL_Dispatch_Table_Tag_Init =>
11728 (1 => False, -- unused
11729 2 => False, -- unused
11730 3 => False, -- unused
11731 4 => False, -- SCIL_Entity (Node4-Sem)
11732 5 => False), -- unused
11734 N_SCIL_Dispatching_Call =>
11735 (1 => False, -- unused
11736 2 => False, -- SCIL_Target_Prim (Node2-Sem)
11737 3 => False, -- unused
11738 4 => False, -- SCIL_Entity (Node4-Sem)
11739 5 => False), -- SCIL_Controlling_Tag (Node5-Sem)
11741 N_SCIL_Membership_Test =>
11742 (1 => False, -- unused
11743 2 => False, -- unused
11744 3 => False, -- unused
11745 4 => False, -- SCIL_Entity (Node4-Sem)
11746 5 => False), -- SCIL_Tag_Value (Node5-Sem)
11748 -- Entries for Empty, Error and Unused. Even thought these have a Chars
11749 -- field for debugging purposes, they are not really syntactic fields, so
11750 -- we mark all fields as unused.
11753 (1 => False, -- unused
11754 2 => False, -- unused
11755 3 => False, -- unused
11756 4 => False, -- unused
11757 5 => False), -- unused
11760 (1 => False, -- unused
11761 2 => False, -- unused
11762 3 => False, -- unused
11763 4 => False, -- unused
11764 5 => False), -- unused
11766 N_Unused_At_Start =>
11767 (1 => False, -- unused
11768 2 => False, -- unused
11769 3 => False, -- unused
11770 4 => False, -- unused
11771 5 => False), -- unused
11774 (1 => False, -- unused
11775 2 => False, -- unused
11776 3 => False, -- unused
11777 4 => False, -- unused
11778 5 => False)); -- unused
11780 --------------------
11781 -- Inline Pragmas --
11782 --------------------
11784 pragma Inline (ABE_Is_Certain);
11785 pragma Inline (Abort_Present);
11786 pragma Inline (Abortable_Part);
11787 pragma Inline (Abstract_Present);
11788 pragma Inline (Accept_Handler_Records);
11789 pragma Inline (Accept_Statement);
11790 pragma Inline (Access_Definition);
11791 pragma Inline (Access_To_Subprogram_Definition);
11792 pragma Inline (Access_Types_To_Process);
11793 pragma Inline (Actions);
11794 pragma Inline (Activation_Chain_Entity);
11795 pragma Inline (Acts_As_Spec);
11796 pragma Inline (Actual_Designated_Subtype);
11797 pragma Inline (Address_Warning_Posted);
11798 pragma Inline (Aggregate_Bounds);
11799 pragma Inline (Aliased_Present);
11800 pragma Inline (All_Others);
11801 pragma Inline (All_Present);
11802 pragma Inline (Alternatives);
11803 pragma Inline (Ancestor_Part);
11804 pragma Inline (Atomic_Sync_Required);
11805 pragma Inline (Array_Aggregate);
11806 pragma Inline (Aspect_Rep_Item);
11807 pragma Inline (Assignment_OK);
11808 pragma Inline (Associated_Node);
11809 pragma Inline (At_End_Proc);
11810 pragma Inline (Attribute_Name);
11811 pragma Inline (Aux_Decls_Node);
11812 pragma Inline (Backwards_OK);
11813 pragma Inline (Bad_Is_Detected);
11814 pragma Inline (Body_To_Inline);
11815 pragma Inline (Body_Required);
11816 pragma Inline (By_Ref);
11817 pragma Inline (Box_Present);
11818 pragma Inline (Char_Literal_Value);
11819 pragma Inline (Chars);
11820 pragma Inline (Check_Address_Alignment);
11821 pragma Inline (Choice_Parameter);
11822 pragma Inline (Choices);
11823 pragma Inline (Class_Present);
11824 pragma Inline (Comes_From_Extended_Return_Statement);
11825 pragma Inline (Compile_Time_Known_Aggregate);
11826 pragma Inline (Component_Associations);
11827 pragma Inline (Component_Clauses);
11828 pragma Inline (Component_Definition);
11829 pragma Inline (Component_Items);
11830 pragma Inline (Component_List);
11831 pragma Inline (Component_Name);
11832 pragma Inline (Componentwise_Assignment);
11833 pragma Inline (Condition);
11834 pragma Inline (Condition_Actions);
11835 pragma Inline (Config_Pragmas);
11836 pragma Inline (Constant_Present);
11837 pragma Inline (Constraint);
11838 pragma Inline (Constraints);
11839 pragma Inline (Context_Installed);
11840 pragma Inline (Context_Items);
11841 pragma Inline (Context_Pending);
11842 pragma Inline (Controlling_Argument);
11843 pragma Inline (Conversion_OK);
11844 pragma Inline (Corresponding_Aspect);
11845 pragma Inline (Corresponding_Body);
11846 pragma Inline (Corresponding_Formal_Spec);
11847 pragma Inline (Corresponding_Generic_Association);
11848 pragma Inline (Corresponding_Integer_Value);
11849 pragma Inline (Corresponding_Spec);
11850 pragma Inline (Corresponding_Stub);
11851 pragma Inline (Dcheck_Function);
11852 pragma Inline (Declarations);
11853 pragma Inline (Default_Expression);
11854 pragma Inline (Default_Storage_Pool);
11855 pragma Inline (Default_Name);
11856 pragma Inline (Defining_Identifier);
11857 pragma Inline (Defining_Unit_Name);
11858 pragma Inline (Delay_Alternative);
11859 pragma Inline (Delay_Statement);
11860 pragma Inline (Delta_Expression);
11861 pragma Inline (Digits_Expression);
11862 pragma Inline (Discr_Check_Funcs_Built);
11863 pragma Inline (Discrete_Choices);
11864 pragma Inline (Discrete_Range);
11865 pragma Inline (Discrete_Subtype_Definition);
11866 pragma Inline (Discrete_Subtype_Definitions);
11867 pragma Inline (Discriminant_Specifications);
11868 pragma Inline (Discriminant_Type);
11869 pragma Inline (Do_Accessibility_Check);
11870 pragma Inline (Do_Discriminant_Check);
11871 pragma Inline (Do_Length_Check);
11872 pragma Inline (Do_Division_Check);
11873 pragma Inline (Do_Overflow_Check);
11874 pragma Inline (Do_Range_Check);
11875 pragma Inline (Do_Storage_Check);
11876 pragma Inline (Do_Tag_Check);
11877 pragma Inline (Elaborate_Present);
11878 pragma Inline (Elaborate_All_Desirable);
11879 pragma Inline (Elaborate_All_Present);
11880 pragma Inline (Elaborate_Desirable);
11881 pragma Inline (Elaboration_Boolean);
11882 pragma Inline (Else_Actions);
11883 pragma Inline (Else_Statements);
11884 pragma Inline (Elsif_Parts);
11885 pragma Inline (Enclosing_Variant);
11886 pragma Inline (End_Label);
11887 pragma Inline (End_Span);
11888 pragma Inline (Entity);
11889 pragma Inline (Entity_Or_Associated_Node);
11890 pragma Inline (Entry_Body_Formal_Part);
11891 pragma Inline (Entry_Call_Alternative);
11892 pragma Inline (Entry_Call_Statement);
11893 pragma Inline (Entry_Direct_Name);
11894 pragma Inline (Entry_Index);
11895 pragma Inline (Entry_Index_Specification);
11896 pragma Inline (Etype);
11897 pragma Inline (Exception_Choices);
11898 pragma Inline (Exception_Handlers);
11899 pragma Inline (Exception_Junk);
11900 pragma Inline (Exception_Label);
11901 pragma Inline (Expansion_Delayed);
11902 pragma Inline (Explicit_Actual_Parameter);
11903 pragma Inline (Explicit_Generic_Actual_Parameter);
11904 pragma Inline (Expression);
11905 pragma Inline (Expressions);
11906 pragma Inline (First_Bit);
11907 pragma Inline (First_Inlined_Subprogram);
11908 pragma Inline (First_Name);
11909 pragma Inline (First_Named_Actual);
11910 pragma Inline (First_Real_Statement);
11911 pragma Inline (First_Subtype_Link);
11912 pragma Inline (Float_Truncate);
11913 pragma Inline (Formal_Type_Definition);
11914 pragma Inline (Forwards_OK);
11915 pragma Inline (From_Aspect_Specification);
11916 pragma Inline (From_At_End);
11917 pragma Inline (From_At_Mod);
11918 pragma Inline (From_Default);
11919 pragma Inline (Generic_Associations);
11920 pragma Inline (Generic_Formal_Declarations);
11921 pragma Inline (Generic_Parent);
11922 pragma Inline (Generic_Parent_Type);
11923 pragma Inline (Handled_Statement_Sequence);
11924 pragma Inline (Handler_List_Entry);
11925 pragma Inline (Has_Created_Identifier);
11926 pragma Inline (Has_Dynamic_Length_Check);
11927 pragma Inline (Has_Dynamic_Range_Check);
11928 pragma Inline (Has_Init_Expression);
11929 pragma Inline (Has_Local_Raise);
11930 pragma Inline (Has_Self_Reference);
11931 pragma Inline (Has_No_Elaboration_Code);
11932 pragma Inline (Has_Pragma_CPU);
11933 pragma Inline (Has_Pragma_Dispatching_Domain);
11934 pragma Inline (Has_Pragma_Priority);
11935 pragma Inline (Has_Pragma_Suppress_All);
11936 pragma Inline (Has_Private_View);
11937 pragma Inline (Has_Relative_Deadline_Pragma);
11938 pragma Inline (Has_Storage_Size_Pragma);
11939 pragma Inline (Has_Task_Info_Pragma);
11940 pragma Inline (Has_Task_Name_Pragma);
11941 pragma Inline (Has_Wide_Character);
11942 pragma Inline (Has_Wide_Wide_Character);
11943 pragma Inline (Header_Size_Added);
11944 pragma Inline (Hidden_By_Use_Clause);
11945 pragma Inline (High_Bound);
11946 pragma Inline (Identifier);
11947 pragma Inline (Implicit_With);
11948 pragma Inline (Interface_List);
11949 pragma Inline (Interface_Present);
11950 pragma Inline (Includes_Infinities);
11951 pragma Inline (Import_Interface_Present);
11952 pragma Inline (In_Present);
11953 pragma Inline (Inherited_Discriminant);
11954 pragma Inline (Instance_Spec);
11955 pragma Inline (Intval);
11956 pragma Inline (Iterator_Specification);
11957 pragma Inline (Is_Accessibility_Actual);
11958 pragma Inline (Is_Asynchronous_Call_Block);
11959 pragma Inline (Is_Boolean_Aspect);
11960 pragma Inline (Is_Component_Left_Opnd);
11961 pragma Inline (Is_Component_Right_Opnd);
11962 pragma Inline (Is_Controlling_Actual);
11963 pragma Inline (Is_Delayed_Aspect);
11964 pragma Inline (Is_Dynamic_Coextension);
11965 pragma Inline (Is_Elsif);
11966 pragma Inline (Is_Entry_Barrier_Function);
11967 pragma Inline (Is_Expanded_Build_In_Place_Call);
11968 pragma Inline (Is_Folded_In_Parser);
11969 pragma Inline (Is_In_Discriminant_Check);
11970 pragma Inline (Is_Machine_Number);
11971 pragma Inline (Is_Null_Loop);
11972 pragma Inline (Is_Overloaded);
11973 pragma Inline (Is_Power_Of_2_For_Shift);
11974 pragma Inline (Is_Protected_Subprogram_Body);
11975 pragma Inline (Is_Static_Coextension);
11976 pragma Inline (Is_Static_Expression);
11977 pragma Inline (Is_Subprogram_Descriptor);
11978 pragma Inline (Is_Task_Allocation_Block);
11979 pragma Inline (Is_Task_Master);
11980 pragma Inline (Iteration_Scheme);
11981 pragma Inline (Itype);
11982 pragma Inline (Kill_Range_Check);
11983 pragma Inline (Last_Bit);
11984 pragma Inline (Last_Name);
11985 pragma Inline (Library_Unit);
11986 pragma Inline (Label_Construct);
11987 pragma Inline (Left_Opnd);
11988 pragma Inline (Limited_View_Installed);
11989 pragma Inline (Limited_Present);
11990 pragma Inline (Literals);
11991 pragma Inline (Local_Raise_Not_OK);
11992 pragma Inline (Local_Raise_Statements);
11993 pragma Inline (Loop_Actions);
11994 pragma Inline (Loop_Parameter_Specification);
11995 pragma Inline (Low_Bound);
11996 pragma Inline (Mod_Clause);
11997 pragma Inline (More_Ids);
11998 pragma Inline (Must_Be_Byte_Aligned);
11999 pragma Inline (Must_Not_Freeze);
12000 pragma Inline (Must_Not_Override);
12001 pragma Inline (Must_Override);
12002 pragma Inline (Name);
12003 pragma Inline (Names);
12004 pragma Inline (Next_Entity);
12005 pragma Inline (Next_Exit_Statement);
12006 pragma Inline (Next_Implicit_With);
12007 pragma Inline (Next_Named_Actual);
12008 pragma Inline (Next_Pragma);
12009 pragma Inline (Next_Rep_Item);
12010 pragma Inline (Next_Use_Clause);
12011 pragma Inline (No_Ctrl_Actions);
12012 pragma Inline (No_Elaboration_Check);
12013 pragma Inline (No_Entities_Ref_In_Spec);
12014 pragma Inline (No_Initialization);
12015 pragma Inline (No_Truncation);
12016 pragma Inline (Null_Present);
12017 pragma Inline (Null_Exclusion_Present);
12018 pragma Inline (Null_Exclusion_In_Return_Present);
12019 pragma Inline (Null_Record_Present);
12020 pragma Inline (Object_Definition);
12021 pragma Inline (Of_Present);
12022 pragma Inline (Original_Discriminant);
12023 pragma Inline (Original_Entity);
12024 pragma Inline (Others_Discrete_Choices);
12025 pragma Inline (Out_Present);
12026 pragma Inline (Parameter_Associations);
12027 pragma Inline (Parameter_Specifications);
12028 pragma Inline (Parameter_List_Truncated);
12029 pragma Inline (Parameter_Type);
12030 pragma Inline (Parent_Spec);
12031 pragma Inline (Position);
12032 pragma Inline (Pragma_Argument_Associations);
12033 pragma Inline (Pragma_Identifier);
12034 pragma Inline (Pragmas_After);
12035 pragma Inline (Pragmas_Before);
12036 pragma Inline (Prefix);
12037 pragma Inline (Premature_Use);
12038 pragma Inline (Present_Expr);
12039 pragma Inline (Prev_Ids);
12040 pragma Inline (Print_In_Hex);
12041 pragma Inline (Private_Declarations);
12042 pragma Inline (Private_Present);
12043 pragma Inline (Procedure_To_Call);
12044 pragma Inline (Proper_Body);
12045 pragma Inline (Protected_Definition);
12046 pragma Inline (Protected_Present);
12047 pragma Inline (Raises_Constraint_Error);
12048 pragma Inline (Range_Constraint);
12049 pragma Inline (Range_Expression);
12050 pragma Inline (Real_Range_Specification);
12051 pragma Inline (Realval);
12052 pragma Inline (Reason);
12053 pragma Inline (Record_Extension_Part);
12054 pragma Inline (Redundant_Use);
12055 pragma Inline (Renaming_Exception);
12056 pragma Inline (Result_Definition);
12057 pragma Inline (Return_Object_Declarations);
12058 pragma Inline (Return_Statement_Entity);
12059 pragma Inline (Reverse_Present);
12060 pragma Inline (Right_Opnd);
12061 pragma Inline (Rounded_Result);
12062 pragma Inline (SCIL_Controlling_Tag);
12063 pragma Inline (SCIL_Entity);
12064 pragma Inline (SCIL_Tag_Value);
12065 pragma Inline (SCIL_Target_Prim);
12066 pragma Inline (Scope);
12067 pragma Inline (Select_Alternatives);
12068 pragma Inline (Selector_Name);
12069 pragma Inline (Selector_Names);
12070 pragma Inline (Shift_Count_OK);
12071 pragma Inline (Source_Type);
12072 pragma Inline (Spec_PPC_List);
12073 pragma Inline (Spec_TC_List);
12074 pragma Inline (Specification);
12075 pragma Inline (Split_PPC);
12076 pragma Inline (Statements);
12077 pragma Inline (Static_Processing_OK);
12078 pragma Inline (Storage_Pool);
12079 pragma Inline (Subpool_Handle_Name);
12080 pragma Inline (Strval);
12081 pragma Inline (Subtype_Indication);
12082 pragma Inline (Subtype_Mark);
12083 pragma Inline (Subtype_Marks);
12084 pragma Inline (Suppress_Assignment_Checks);
12085 pragma Inline (Suppress_Loop_Warnings);
12086 pragma Inline (Synchronized_Present);
12087 pragma Inline (Tagged_Present);
12088 pragma Inline (Target_Type);
12089 pragma Inline (Task_Definition);
12090 pragma Inline (Task_Present);
12091 pragma Inline (Then_Actions);
12092 pragma Inline (Then_Statements);
12093 pragma Inline (Triggering_Alternative);
12094 pragma Inline (Triggering_Statement);
12095 pragma Inline (Treat_Fixed_As_Integer);
12096 pragma Inline (TSS_Elist);
12097 pragma Inline (Type_Definition);
12098 pragma Inline (Unit);
12099 pragma Inline (Unknown_Discriminants_Present);
12100 pragma Inline (Unreferenced_In_Spec);
12101 pragma Inline (Variant_Part);
12102 pragma Inline (Variants);
12103 pragma Inline (Visible_Declarations);
12104 pragma Inline (Used_Operations);
12105 pragma Inline (Was_Originally_Stub);
12106 pragma Inline (Withed_Body);
12108 pragma Inline (Set_ABE_Is_Certain);
12109 pragma Inline (Set_Abort_Present);
12110 pragma Inline (Set_Abortable_Part);
12111 pragma Inline (Set_Abstract_Present);
12112 pragma Inline (Set_Accept_Handler_Records);
12113 pragma Inline (Set_Accept_Statement);
12114 pragma Inline (Set_Access_Definition);
12115 pragma Inline (Set_Access_To_Subprogram_Definition);
12116 pragma Inline (Set_Access_Types_To_Process);
12117 pragma Inline (Set_Actions);
12118 pragma Inline (Set_Activation_Chain_Entity);
12119 pragma Inline (Set_Acts_As_Spec);
12120 pragma Inline (Set_Actual_Designated_Subtype);
12121 pragma Inline (Set_Address_Warning_Posted);
12122 pragma Inline (Set_Aggregate_Bounds);
12123 pragma Inline (Set_Aliased_Present);
12124 pragma Inline (Set_All_Others);
12125 pragma Inline (Set_All_Present);
12126 pragma Inline (Set_Alternatives);
12127 pragma Inline (Set_Ancestor_Part);
12128 pragma Inline (Set_Atomic_Sync_Required);
12129 pragma Inline (Set_Array_Aggregate);
12130 pragma Inline (Set_Aspect_Rep_Item);
12131 pragma Inline (Set_Assignment_OK);
12132 pragma Inline (Set_Associated_Node);
12133 pragma Inline (Set_At_End_Proc);
12134 pragma Inline (Set_Attribute_Name);
12135 pragma Inline (Set_Aux_Decls_Node);
12136 pragma Inline (Set_Backwards_OK);
12137 pragma Inline (Set_Bad_Is_Detected);
12138 pragma Inline (Set_Body_To_Inline);
12139 pragma Inline (Set_Body_Required);
12140 pragma Inline (Set_By_Ref);
12141 pragma Inline (Set_Box_Present);
12142 pragma Inline (Set_Char_Literal_Value);
12143 pragma Inline (Set_Chars);
12144 pragma Inline (Set_Check_Address_Alignment);
12145 pragma Inline (Set_Choice_Parameter);
12146 pragma Inline (Set_Choices);
12147 pragma Inline (Set_Class_Present);
12148 pragma Inline (Set_Comes_From_Extended_Return_Statement);
12149 pragma Inline (Set_Compile_Time_Known_Aggregate);
12150 pragma Inline (Set_Component_Associations);
12151 pragma Inline (Set_Component_Clauses);
12152 pragma Inline (Set_Component_Definition);
12153 pragma Inline (Set_Component_Items);
12154 pragma Inline (Set_Component_List);
12155 pragma Inline (Set_Component_Name);
12156 pragma Inline (Set_Componentwise_Assignment);
12157 pragma Inline (Set_Condition);
12158 pragma Inline (Set_Condition_Actions);
12159 pragma Inline (Set_Config_Pragmas);
12160 pragma Inline (Set_Constant_Present);
12161 pragma Inline (Set_Constraint);
12162 pragma Inline (Set_Constraints);
12163 pragma Inline (Set_Context_Installed);
12164 pragma Inline (Set_Context_Items);
12165 pragma Inline (Set_Context_Pending);
12166 pragma Inline (Set_Controlling_Argument);
12167 pragma Inline (Set_Conversion_OK);
12168 pragma Inline (Set_Corresponding_Aspect);
12169 pragma Inline (Set_Corresponding_Body);
12170 pragma Inline (Set_Corresponding_Formal_Spec);
12171 pragma Inline (Set_Corresponding_Generic_Association);
12172 pragma Inline (Set_Corresponding_Integer_Value);
12173 pragma Inline (Set_Corresponding_Spec);
12174 pragma Inline (Set_Corresponding_Stub);
12175 pragma Inline (Set_Dcheck_Function);
12176 pragma Inline (Set_Declarations);
12177 pragma Inline (Set_Default_Expression);
12178 pragma Inline (Set_Default_Storage_Pool);
12179 pragma Inline (Set_Default_Name);
12180 pragma Inline (Set_Defining_Identifier);
12181 pragma Inline (Set_Defining_Unit_Name);
12182 pragma Inline (Set_Delay_Alternative);
12183 pragma Inline (Set_Delay_Statement);
12184 pragma Inline (Set_Delta_Expression);
12185 pragma Inline (Set_Digits_Expression);
12186 pragma Inline (Set_Discr_Check_Funcs_Built);
12187 pragma Inline (Set_Discrete_Choices);
12188 pragma Inline (Set_Discrete_Range);
12189 pragma Inline (Set_Discrete_Subtype_Definition);
12190 pragma Inline (Set_Discrete_Subtype_Definitions);
12191 pragma Inline (Set_Discriminant_Specifications);
12192 pragma Inline (Set_Discriminant_Type);
12193 pragma Inline (Set_Do_Accessibility_Check);
12194 pragma Inline (Set_Do_Discriminant_Check);
12195 pragma Inline (Set_Do_Length_Check);
12196 pragma Inline (Set_Do_Division_Check);
12197 pragma Inline (Set_Do_Overflow_Check);
12198 pragma Inline (Set_Do_Range_Check);
12199 pragma Inline (Set_Do_Storage_Check);
12200 pragma Inline (Set_Do_Tag_Check);
12201 pragma Inline (Set_Elaborate_Present);
12202 pragma Inline (Set_Elaborate_All_Desirable);
12203 pragma Inline (Set_Elaborate_All_Present);
12204 pragma Inline (Set_Elaborate_Desirable);
12205 pragma Inline (Set_Elaboration_Boolean);
12206 pragma Inline (Set_Else_Actions);
12207 pragma Inline (Set_Else_Statements);
12208 pragma Inline (Set_Elsif_Parts);
12209 pragma Inline (Set_Enclosing_Variant);
12210 pragma Inline (Set_End_Label);
12211 pragma Inline (Set_End_Span);
12212 pragma Inline (Set_Entity);
12213 pragma Inline (Set_Entry_Body_Formal_Part);
12214 pragma Inline (Set_Entry_Call_Alternative);
12215 pragma Inline (Set_Entry_Call_Statement);
12216 pragma Inline (Set_Entry_Direct_Name);
12217 pragma Inline (Set_Entry_Index);
12218 pragma Inline (Set_Entry_Index_Specification);
12219 pragma Inline (Set_Etype);
12220 pragma Inline (Set_Exception_Choices);
12221 pragma Inline (Set_Exception_Handlers);
12222 pragma Inline (Set_Exception_Junk);
12223 pragma Inline (Set_Exception_Label);
12224 pragma Inline (Set_Expansion_Delayed);
12225 pragma Inline (Set_Explicit_Actual_Parameter);
12226 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
12227 pragma Inline (Set_Expression);
12228 pragma Inline (Set_Expressions);
12229 pragma Inline (Set_First_Bit);
12230 pragma Inline (Set_First_Inlined_Subprogram);
12231 pragma Inline (Set_First_Name);
12232 pragma Inline (Set_First_Named_Actual);
12233 pragma Inline (Set_First_Real_Statement);
12234 pragma Inline (Set_First_Subtype_Link);
12235 pragma Inline (Set_Float_Truncate);
12236 pragma Inline (Set_Formal_Type_Definition);
12237 pragma Inline (Set_Forwards_OK);
12238 pragma Inline (Set_From_Aspect_Specification);
12239 pragma Inline (Set_From_At_End);
12240 pragma Inline (Set_From_At_Mod);
12241 pragma Inline (Set_From_Default);
12242 pragma Inline (Set_Generic_Associations);
12243 pragma Inline (Set_Generic_Formal_Declarations);
12244 pragma Inline (Set_Generic_Parent);
12245 pragma Inline (Set_Generic_Parent_Type);
12246 pragma Inline (Set_Handled_Statement_Sequence);
12247 pragma Inline (Set_Handler_List_Entry);
12248 pragma Inline (Set_Has_Created_Identifier);
12249 pragma Inline (Set_Has_Dynamic_Length_Check);
12250 pragma Inline (Set_Has_Init_Expression);
12251 pragma Inline (Set_Has_Local_Raise);
12252 pragma Inline (Set_Has_Dynamic_Range_Check);
12253 pragma Inline (Set_Has_No_Elaboration_Code);
12254 pragma Inline (Set_Has_Pragma_CPU);
12255 pragma Inline (Set_Has_Pragma_Dispatching_Domain);
12256 pragma Inline (Set_Has_Pragma_Priority);
12257 pragma Inline (Set_Has_Pragma_Suppress_All);
12258 pragma Inline (Set_Has_Private_View);
12259 pragma Inline (Set_Has_Relative_Deadline_Pragma);
12260 pragma Inline (Set_Has_Storage_Size_Pragma);
12261 pragma Inline (Set_Has_Task_Info_Pragma);
12262 pragma Inline (Set_Has_Task_Name_Pragma);
12263 pragma Inline (Set_Has_Wide_Character);
12264 pragma Inline (Set_Has_Wide_Wide_Character);
12265 pragma Inline (Set_Header_Size_Added);
12266 pragma Inline (Set_Hidden_By_Use_Clause);
12267 pragma Inline (Set_High_Bound);
12268 pragma Inline (Set_Identifier);
12269 pragma Inline (Set_Implicit_With);
12270 pragma Inline (Set_Includes_Infinities);
12271 pragma Inline (Set_Interface_List);
12272 pragma Inline (Set_Interface_Present);
12273 pragma Inline (Set_Import_Interface_Present);
12274 pragma Inline (Set_In_Present);
12275 pragma Inline (Set_Inherited_Discriminant);
12276 pragma Inline (Set_Instance_Spec);
12277 pragma Inline (Set_Intval);
12278 pragma Inline (Set_Iterator_Specification);
12279 pragma Inline (Set_Is_Accessibility_Actual);
12280 pragma Inline (Set_Is_Asynchronous_Call_Block);
12281 pragma Inline (Set_Is_Boolean_Aspect);
12282 pragma Inline (Set_Is_Component_Left_Opnd);
12283 pragma Inline (Set_Is_Component_Right_Opnd);
12284 pragma Inline (Set_Is_Controlling_Actual);
12285 pragma Inline (Set_Is_Delayed_Aspect);
12286 pragma Inline (Set_Is_Dynamic_Coextension);
12287 pragma Inline (Set_Is_Elsif);
12288 pragma Inline (Set_Is_Entry_Barrier_Function);
12289 pragma Inline (Set_Is_Expanded_Build_In_Place_Call);
12290 pragma Inline (Set_Is_Folded_In_Parser);
12291 pragma Inline (Set_Is_In_Discriminant_Check);
12292 pragma Inline (Set_Is_Machine_Number);
12293 pragma Inline (Set_Is_Null_Loop);
12294 pragma Inline (Set_Is_Overloaded);
12295 pragma Inline (Set_Is_Power_Of_2_For_Shift);
12296 pragma Inline (Set_Is_Protected_Subprogram_Body);
12297 pragma Inline (Set_Has_Self_Reference);
12298 pragma Inline (Set_Is_Static_Coextension);
12299 pragma Inline (Set_Is_Static_Expression);
12300 pragma Inline (Set_Is_Subprogram_Descriptor);
12301 pragma Inline (Set_Is_Task_Allocation_Block);
12302 pragma Inline (Set_Is_Task_Master);
12303 pragma Inline (Set_Iteration_Scheme);
12304 pragma Inline (Set_Itype);
12305 pragma Inline (Set_Kill_Range_Check);
12306 pragma Inline (Set_Last_Bit);
12307 pragma Inline (Set_Last_Name);
12308 pragma Inline (Set_Library_Unit);
12309 pragma Inline (Set_Label_Construct);
12310 pragma Inline (Set_Left_Opnd);
12311 pragma Inline (Set_Limited_View_Installed);
12312 pragma Inline (Set_Limited_Present);
12313 pragma Inline (Set_Literals);
12314 pragma Inline (Set_Local_Raise_Not_OK);
12315 pragma Inline (Set_Local_Raise_Statements);
12316 pragma Inline (Set_Loop_Actions);
12317 pragma Inline (Set_Loop_Parameter_Specification);
12318 pragma Inline (Set_Low_Bound);
12319 pragma Inline (Set_Mod_Clause);
12320 pragma Inline (Set_More_Ids);
12321 pragma Inline (Set_Must_Be_Byte_Aligned);
12322 pragma Inline (Set_Must_Not_Freeze);
12323 pragma Inline (Set_Must_Not_Override);
12324 pragma Inline (Set_Must_Override);
12325 pragma Inline (Set_Name);
12326 pragma Inline (Set_Names);
12327 pragma Inline (Set_Next_Entity);
12328 pragma Inline (Set_Next_Exit_Statement);
12329 pragma Inline (Set_Next_Implicit_With);
12330 pragma Inline (Set_Next_Named_Actual);
12331 pragma Inline (Set_Next_Pragma);
12332 pragma Inline (Set_Next_Rep_Item);
12333 pragma Inline (Set_Next_Use_Clause);
12334 pragma Inline (Set_No_Ctrl_Actions);
12335 pragma Inline (Set_No_Elaboration_Check);
12336 pragma Inline (Set_No_Entities_Ref_In_Spec);
12337 pragma Inline (Set_No_Initialization);
12338 pragma Inline (Set_No_Truncation);
12339 pragma Inline (Set_Null_Present);
12340 pragma Inline (Set_Null_Exclusion_Present);
12341 pragma Inline (Set_Null_Exclusion_In_Return_Present);
12342 pragma Inline (Set_Null_Record_Present);
12343 pragma Inline (Set_Object_Definition);
12344 pragma Inline (Set_Of_Present);
12345 pragma Inline (Set_Original_Discriminant);
12346 pragma Inline (Set_Original_Entity);
12347 pragma Inline (Set_Others_Discrete_Choices);
12348 pragma Inline (Set_Out_Present);
12349 pragma Inline (Set_Parameter_Associations);
12350 pragma Inline (Set_Parameter_Specifications);
12351 pragma Inline (Set_Parameter_List_Truncated);
12352 pragma Inline (Set_Parameter_Type);
12353 pragma Inline (Set_Parent_Spec);
12354 pragma Inline (Set_Position);
12355 pragma Inline (Set_Pragma_Argument_Associations);
12356 pragma Inline (Set_Pragma_Identifier);
12357 pragma Inline (Set_Pragmas_After);
12358 pragma Inline (Set_Pragmas_Before);
12359 pragma Inline (Set_Prefix);
12360 pragma Inline (Set_Premature_Use);
12361 pragma Inline (Set_Present_Expr);
12362 pragma Inline (Set_Prev_Ids);
12363 pragma Inline (Set_Print_In_Hex);
12364 pragma Inline (Set_Private_Declarations);
12365 pragma Inline (Set_Private_Present);
12366 pragma Inline (Set_Procedure_To_Call);
12367 pragma Inline (Set_Proper_Body);
12368 pragma Inline (Set_Protected_Definition);
12369 pragma Inline (Set_Protected_Present);
12370 pragma Inline (Set_Raises_Constraint_Error);
12371 pragma Inline (Set_Range_Constraint);
12372 pragma Inline (Set_Range_Expression);
12373 pragma Inline (Set_Real_Range_Specification);
12374 pragma Inline (Set_Realval);
12375 pragma Inline (Set_Reason);
12376 pragma Inline (Set_Record_Extension_Part);
12377 pragma Inline (Set_Redundant_Use);
12378 pragma Inline (Set_Renaming_Exception);
12379 pragma Inline (Set_Result_Definition);
12380 pragma Inline (Set_Return_Object_Declarations);
12381 pragma Inline (Set_Reverse_Present);
12382 pragma Inline (Set_Right_Opnd);
12383 pragma Inline (Set_Rounded_Result);
12384 pragma Inline (Set_SCIL_Controlling_Tag);
12385 pragma Inline (Set_SCIL_Entity);
12386 pragma Inline (Set_SCIL_Tag_Value);
12387 pragma Inline (Set_SCIL_Target_Prim);
12388 pragma Inline (Set_Scope);
12389 pragma Inline (Set_Select_Alternatives);
12390 pragma Inline (Set_Selector_Name);
12391 pragma Inline (Set_Selector_Names);
12392 pragma Inline (Set_Shift_Count_OK);
12393 pragma Inline (Set_Source_Type);
12394 pragma Inline (Set_Spec_PPC_List);
12395 pragma Inline (Set_Spec_TC_List);
12396 pragma Inline (Set_Specification);
12397 pragma Inline (Set_Split_PPC);
12398 pragma Inline (Set_Statements);
12399 pragma Inline (Set_Static_Processing_OK);
12400 pragma Inline (Set_Storage_Pool);
12401 pragma Inline (Set_Subpool_Handle_Name);
12402 pragma Inline (Set_Strval);
12403 pragma Inline (Set_Subtype_Indication);
12404 pragma Inline (Set_Subtype_Mark);
12405 pragma Inline (Set_Subtype_Marks);
12406 pragma Inline (Set_Suppress_Assignment_Checks);
12407 pragma Inline (Set_Suppress_Loop_Warnings);
12408 pragma Inline (Set_Synchronized_Present);
12409 pragma Inline (Set_Tagged_Present);
12410 pragma Inline (Set_Target_Type);
12411 pragma Inline (Set_Task_Definition);
12412 pragma Inline (Set_Task_Present);
12413 pragma Inline (Set_Then_Actions);
12414 pragma Inline (Set_Then_Statements);
12415 pragma Inline (Set_Triggering_Alternative);
12416 pragma Inline (Set_Triggering_Statement);
12417 pragma Inline (Set_Treat_Fixed_As_Integer);
12418 pragma Inline (Set_TSS_Elist);
12419 pragma Inline (Set_Type_Definition);
12420 pragma Inline (Set_Unit);
12421 pragma Inline (Set_Unknown_Discriminants_Present);
12422 pragma Inline (Set_Unreferenced_In_Spec);
12423 pragma Inline (Set_Variant_Part);
12424 pragma Inline (Set_Variants);
12425 pragma Inline (Set_Visible_Declarations);
12426 pragma Inline (Set_Used_Operations);
12427 pragma Inline (Set_Was_Originally_Stub);
12428 pragma Inline (Set_Withed_Body);
12434 -- These synonyms are to aid in transition, they should eventually be
12435 -- removed when all remaining references to the obsolete name are gone.
12437 N_Simple_Return_Statement : constant Node_Kind := N_Return_Statement;
12438 -- Rename N_Return_Statement to be N_Simple_Return_Statement. Clients
12439 -- should refer to N_Simple_Return_Statement.
12441 N_Parameterized_Expression : constant Node_Kind := N_Expression_Function;
12442 -- Old name for expression functions (used during Ada 2012 transition)
OSDN Git Service
