1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This package defines the structure of the abstract syntax tree. The Tree
35 -- package provides a basic tree structure. Sinfo describes how this structure
36 -- is used to represent the syntax of an Ada program.
38 -- Note: the grammar used here is taken from Version 5.95 of the RM, dated
39 -- November 1994. The grammar in the RM is followed very closely in the tree
40 -- design, and is repeated as part of this source file.
42 -- The tree contains not only the full syntactic representation of the
43 -- program, but also the results of semantic analysis. In particular, the
44 -- nodes for defining identifiers, defining character literals and defining
45 -- operator symbols, collectively referred to as entities, represent what
46 -- would normally be regarded as the symbol table information. In addition a
47 -- number of the tree nodes contain semantic information.
49 -- WARNING: There is a C version of this package. Any changes to this source
50 -- file must be properly reflected in this C header file sinfo.h which is
51 -- created automatically from sinfo.ads using xsinfo.adb.
53 with Types; use Types;
54 with Uintp; use Uintp;
55 with Urealp; use Urealp;
59 ---------------------------------
60 -- Making Changes to This File --
61 ---------------------------------
63 -- If changes are made to this file, a number of related steps must be
64 -- carried out to ensure consistency. First, if a field access function is
65 -- added, it appears in seven places:
67 -- The documentation associated with the node
68 -- The spec of the access function in sinfo.ads
69 -- The body of the access function in sinfo.adb
70 -- The pragma Inline at the end of sinfo.ads for the access function
71 -- The spec of the set procedure in sinfo.ads
72 -- The body of the set procedure in sinfo.adb
73 -- The pragma Inline at the end of sinfo.ads for the set procedure
75 -- The field chosen must be consistent in all places, and, for a node that
76 -- is a subexpression, must not overlap any of the standard expression
79 -- In addition, if any of the standard expression fields is changed, then
80 -- the utiliy program which creates the Treeprs spec (in file treeprs.ads)
81 -- must be updated appropriately, since it special cases expression fields.
83 -- If a new tree node is added, then the following changes are made
85 -- Add it to the documentation in the appropriate place
86 -- Add its fields to this documentation section
87 -- Define it in the appropriate classification in Node_Kind
88 -- In the body (sinfo), add entries to the access functions for all
89 -- its fields (except standard expression fields) to include the new
90 -- node in the checks.
91 -- Add an appropriate section to the case statement in sprint.adb
92 -- Add an appropriate section to the case statement in sem.adb
93 -- Add an appropriate section to the case statement in exp_util.adb
94 -- (Insert_Actions procedure)
95 -- For a subexpression, add an appropriate section to the case
96 -- statement in sem_eval.adb
97 -- For a subexpression, add an appropriate section to the case
98 -- statement in sem_res.adb
100 -- Finally, four utility programs must be run:
102 -- Run CSinfo to check that you have made the changes consistently. It
103 -- checks most of the rules given above, with clear error messages. This
104 -- utility reads sinfo.ads and sinfo.adb and generates a report to
107 -- Run XSinfo to create a-sinfo.h, the corresponding C header. This
108 -- utility reads sinfo.ads and generates a-sinfo.h. Note that it does
109 -- not need to read sinfo.adb, since the contents of the body are
110 -- algorithmically determinable from the spec.
112 -- Run XTreeprs to create treeprs.ads, an updated version of the module
113 -- that is used to drive the tree print routine. This utility reads (but
114 -- does not modify) treeprs.adt, the template that provides the basic
115 -- structure of the file, and then fills in the data from the comments
118 -- Run XNmake to create nmake.ads and nmake.adb, the package body and
119 -- spec of the Nmake package which contains functions for constructing
122 -- Note: sometime we could write a utility that actually generated the body
123 -- of sinfo from the spec instead of simply checking it, since, as noted
124 -- above, the contents of the body can be determined from the spec.
126 --------------------------------
127 -- Implicit Nodes in the Tree --
128 --------------------------------
130 -- Generally the structure of the tree very closely follows the grammar as
131 -- defined in the RM. However, certain nodes are omitted to save space and
132 -- simplify semantic processing. Two general classes of such omitted nodes
135 -- If the only possibilities for a non-terminal are one or more other
136 -- non-terminals (i.e. the rule is a "skinny" rule), then usually the
137 -- corresponding node is omitted from the tree, and the target construct
138 -- appears directly. For example, a real type definition is either
139 -- floating point definition or a fixed point definition. No explicit node
140 -- appears for real type definition. Instead either the floating point
141 -- definition or fixed point definition appears directly.
143 -- If a non-terminal corresponds to a list of some other non-terminal
144 -- (possibly with separating punctuation), then usually it is omitted from
145 -- the tree, and a list of components appears instead. For example,
146 -- sequence of statements does not appear explicitly in the tree. Instead
147 -- a list of statements appears directly.
149 -- Some additional cases of omitted nodes occur and are documented
150 -- individually. In particular, many nodes are omitted in the tree
151 -- generated for an expression.
153 -------------------------------------------
154 -- Handling of Defining Identifier Lists --
155 -------------------------------------------
157 -- In several declarative forms in the syntax, lists of defining
158 -- identifiers appear (object declarations, component declarations, number
159 -- declarations etc.)
161 -- The semantics of such statements are equivalent to a series of identical
162 -- declarations of single defining identifiers (except that conformance
163 -- checks require the same grouping of identifiers in the parameter case).
165 -- To simplify semantic processing, the parser breaks down such multiple
166 -- declaration cases into sequences of single declarations, duplicating
167 -- type and initialization information as required. The flags More_Ids and
168 -- Prev_Ids are used to record the original form of the source in the case
169 -- where the original source used a list of names, More_Ids being set on
170 -- all but the last name and Prev_Ids being set on all but the first name.
171 -- These flags are used to reconstruct the original source (e.g. in the
172 -- Sprint package), and also are included in the conformance checks, but
173 -- otherwise have no semantic significance.
175 -- Note: the reason that we use More_Ids and Prev_Ids rather than
176 -- First_Name and Last_Name flags is so that the flags are off in the
177 -- normal one identifier case, which minimizes tree print output.
179 -----------------------
180 -- Use of Node Lists --
181 -----------------------
183 -- With a few exceptions, if a construction of the form {non-terminal}
184 -- appears in the tree, lists are used in the corresponding tree node (see
185 -- package Nlists for handling of node lists). In this case a field of the
186 -- parent node points to a list of nodes for the non-terminal. The field
187 -- name for such fields has a plural name which always ends in "s". For
188 -- example, a case statement has a field Alternatives pointing to list of
189 -- case statement alternative nodes.
191 -- Only fields pointing to lists have names ending in "s", so generally the
192 -- structure is strongly typed, fields not ending in s point to single
193 -- nodes, and fields ending in s point to lists.
195 -- The following example shows how a traversal of a list is written. We
196 -- suppose here that Stmt points to a N_Case_Statement node which has a
197 -- list field called Alternatives:
199 -- Alt := First (Alternatives (Stmt));
200 -- while Present (Alt) loop
202 -- -- processing for case statement alternative Alt
204 -- Alt := Next (Alt);
207 -- The Present function tests for Empty, which in this case signals the end
208 -- of the list. First returns Empty immediately if the list is empty.
209 -- Present is defined in Atree, First and Next are defined in Nlists.
211 -- The exceptions to this rule occur with {DEFINING_IDENTIFIERS} in all
212 -- contexts, which is handled as described in the previous section, and
213 -- with {,library_unit_NAME} in the N_With_Clause mode, which is handled
214 -- using the First_Name and Last_Name flags, as further detailed in the
215 -- description of the N_With_Clause node.
221 -- Pragmas can appear in many different context, but are not included in
222 -- the grammar. Still they must appear in the tree, so they can be properly
225 -- Two approaches are used. In some cases, an extra field is defined in an
226 -- appropriate node that contains a list of pragmas appearing in the
227 -- expected context. For example pragmas can appear before an
228 -- Accept_Alternative in a Selective_Accept_Statement, and these pragmas
229 -- appear in the Pragmas_Before field of the N_Accept_Alternative node.
231 -- The other approach is to simply allow pragmas to appear in syntactic
232 -- lists where the grammar (of course) does not include the possibility.
233 -- For example, the Variants field of an N_Variant_Part node points to a
234 -- list that can contain both N_Pragma and N_Variant nodes.
236 -- To make processing easier in the latter case, the Nlists package
237 -- provides a set of routines (First_Non_Pragma, Last_Non_Pragma,
238 -- Next_Non_Pragma, Prev_Non_Pragma) that allow such lists to be handled
239 -- ignoring all pragmas.
241 -- In the case of the variants list, we can either write:
243 -- Variant := First (Variants (N));
244 -- while Present (Variant) loop
246 -- Variant := Next (Variant);
251 -- Variant := First_Non_Pragma (Variants (N));
252 -- while Present (Variant) loop
254 -- Variant := Next_Non_Pragma (Variant);
257 -- In the first form of the loop, Variant can either be an N_Pragma or an
258 -- N_Variant node. In the second form, Variant can only be N_Variant since
259 -- all pragmas are skipped.
261 ---------------------
262 -- Optional Fields --
263 ---------------------
265 -- Fields which correspond to a section of the syntax enclosed in square
266 -- brackets are generally omitted (and the corresponding field set to Empty
267 -- for a node, or No_List for a list). The documentation of such fields
268 -- notes these cases. One exception to this rule occurs in the case of
269 -- possibly empty statement sequences (such as the sequence of statements
270 -- in an entry call alternative). Such cases appear in the syntax rules as
271 -- [SEQUENCE_OF_STATEMENTS] and the fields corresponding to such optional
272 -- statement sequences always contain an empty list (not No_List) if no
273 -- statements are present.
275 -- Note: the utility program that constructs the body and spec of the Nmake
276 -- package relies on the format of the comments to determine if a field
277 -- should have a default value in the corresponding make routine. The rule
278 -- is that if the first line of the description of the field contains the
279 -- string "(set to xxx if", then a default value of xxx is provided for
280 -- this field in the corresponding Make_yyy routine.
282 -----------------------------------
283 -- Note on Body/Spec Terminology --
284 -----------------------------------
286 -- In informal discussions about Ada, it is customary to refer to package
287 -- and subprogram specs and bodies. However, this is not technically
288 -- correct, what is normally referred to as a spec or specification is in
289 -- fact a package declaration or subprogram declaration. We are careful in
290 -- GNAT to use the correct terminology and in particular, the full word
291 -- specification is never used as an incorrect substitute for declaration.
292 -- The structure and terminology used in the tree also reflects the grammar
293 -- and thus uses declaration and specification in the technically correct
296 -- However, there are contexts in which the informal terminology is useful.
297 -- We have the word "body" to refer to the Interp_Etype declared by the
298 -- declaration of a unit body, and in some contexts we need similar term to
299 -- refer to the entity declared by the package or subprogram declaration,
300 -- and simply using declaration can be confusing since the body also has a
303 -- An example of such a context is the link between the package body and
304 -- its declaration. With_Declaration is confusing, since the package body
305 -- itself is a declaration.
307 -- To deal with this problem, we reserve the informal term Spec, i.e. the
308 -- popular abbreviation used in this context, to refer to the entity
309 -- declared by the package or subprogram declaration. So in the above
310 -- example case, the field in the body is called With_Spec.
312 -- Another important context for the use of the word Spec is in error
313 -- messages, where a hyper-correct use of declaration would be confusing to
314 -- a typical Ada programmer, and even for an expert programmer can cause
315 -- confusion since the body has a declaration as well.
319 -- Declaration always refers to the syntactic entity that is called
320 -- a declaration. In particular, subprogram declaration
321 -- and package declaration are used to describe the
322 -- syntactic entity that includes the semicolon.
324 -- Specification always refers to the syntactic entity that is called
325 -- a specification. In particular, the terms procedure
326 -- specification, function specification, package
327 -- specification, subprogram specification always refer
328 -- to the syntactic entity that has no semicolon.
330 -- Spec is an informal term, used to refer to the entity
331 -- that is declared by a task declaration, protected
332 -- declaration, generic declaration, subprogram
333 -- declaration or package declaration.
335 -- This convention is followed throughout the GNAT documentation
336 -- both internal and external, and in all error message text.
338 ------------------------
339 -- Internal Use Nodes --
340 ------------------------
342 -- These are Node_Kind settings used in the internal implementation which
343 -- are not logically part of the specification.
346 -- Completely unused entry at the start of the enumeration type. This
347 -- is inserted so that no legitimate value is zero, which helps to get
348 -- better debugging behavior, since zero is a likely uninitialized value).
351 -- Completely unused entry at the end of the enumeration type. This is
352 -- handy so that arrays with Node_Kind as the index type have an extra
353 -- entry at the end (see for example the use of the Pchar_Pos_Array in
354 -- Treepr, where the extra entry provides the limit value when dealing with
355 -- the last used entry in the array).
357 -----------------------------------------
358 -- Note on the settings of Sloc fields --
359 -----------------------------------------
361 -- The Sloc field of nodes that come from the source is set by the parser.
362 -- For internal nodes, and nodes generated during expansion the Sloc is
363 -- usually set in the call to the constructor for the node. In general the
364 -- Sloc value chosen for an internal node is the Sloc of the source node
365 -- whose processing is responsible for the expansion. For example, the Sloc
366 -- of an inherited primitive operation is the Sloc of the corresponding
367 -- derived type declaration.
369 -- For the nodes of a generic instantiation, the Sloc value is encoded to
370 -- represent both the original Sloc in the generic unit, and the Sloc of
371 -- the instantiation itself. See Sinput.ads for details.
373 -- Subprogram instances create two callable entities: one is the visible
374 -- subprogram instance, and the other is an anonymous subprogram nested
375 -- within a wrapper package that contains the renamings for the actuals.
376 -- Both of these entities have the Sloc of the defining entity in the
377 -- instantiation node. This simplifies some ASIS queries.
379 -----------------------
380 -- Field Definitions --
381 -----------------------
383 -- In the following node definitions, all fields, both syntactic and
384 -- semantic, are documented. The one exception is in the case of entities
385 -- (defining indentifiers, character literals and operator symbols), where
386 -- the usage of the fields depends on the entity kind. Entity fields are
387 -- fully documented in the separate package Einfo.
389 -- In the node definitions, three common sets of fields are abbreviated to
390 -- save both space in the documentation, and also space in the string
391 -- (defined in Tree_Print_Strings) used to print trees. The following
392 -- abbreviations are used:
394 -- Note: the utility program that creates the Treeprs spec (in the file
395 -- xtreeprs.adb) knows about the special fields here, so it must be
396 -- modified if any change is made to these fields.
398 -- "plus fields for binary operator"
399 -- Chars (Name1) Name_Id for the operator
400 -- Left_Opnd (Node2) left operand expression
401 -- Right_Opnd (Node3) right operand expression
402 -- Entity (Node4-Sem) defining entity for operator
403 -- Associated_Node (Node4-Sem) for generic processing
404 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
405 -- Has_Private_View (Flag11-Sem) set in generic units.
407 -- "plus fields for unary operator"
408 -- Chars (Name1) Name_Id for the operator
409 -- Right_Opnd (Node3) right operand expression
410 -- Entity (Node4-Sem) defining entity for operator
411 -- Associated_Node (Node4-Sem) for generic processing
412 -- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
413 -- Has_Private_View (Flag11-Sem) set in generic units.
415 -- "plus fields for expression"
416 -- Paren_Count number of parentheses levels
417 -- Etype (Node5-Sem) type of the expression
418 -- Is_Overloaded (Flag5-Sem) >1 type interpretation exists
419 -- Is_Static_Expression (Flag6-Sem) set for static expression
420 -- Raises_Constraint_Error (Flag7-Sem) evaluation raises CE
421 -- Must_Not_Freeze (Flag8-Sem) set if must not freeze
422 -- Do_Range_Check (Flag9-Sem) set if a range check needed
423 -- Assignment_OK (Flag15-Sem) set if modification is OK
424 -- Is_Controlling_Actual (Flag16-Sem) set for controlling argument
426 -- Note: see under (EXPRESSION) for further details on the use of
427 -- the Paren_Count field to record the number of parentheses levels.
429 -- Node_Kind is the type used in the Nkind field to indicate the node kind.
430 -- The actual definition of this type is given later (the reason for this
431 -- is that we want the descriptions ordered by logical chapter in the RM,
432 -- but the type definition is reordered to facilitate the definition of
433 -- some subtype ranges. The individual descriptions of the nodes show how
434 -- the various fields are used in each node kind, as well as providing
435 -- logical names for the fields. Functions and procedures are provided for
436 -- accessing and setting these fields using these logical names.
438 -----------------------
439 -- Gigi Restrictions --
440 -----------------------
442 -- The tree passed to Gigi is more restricted than the general tree form.
443 -- For example, as a result of expansion, most of the tasking nodes can
444 -- never appear. For each node to which either a complete or partial
445 -- restriction applies, a note entitled "Gigi restriction" appears which
446 -- documents the restriction.
448 -- Note that most of these restrictions apply only to trees generated when
449 -- code is being generated, since they involved expander actions that
452 ------------------------
453 -- Common Flag Fields --
454 ------------------------
456 -- The following flag fields appear in all nodes
459 -- This flag is used to indicate that a node (and all its children have
460 -- been analyzed. It is used to avoid reanalysis of a node that has
461 -- already been analyzed, both for efficiency and functional correctness
464 -- Comes_From_Source (Flag2)
465 -- This flag is on for any nodes built by the scanner or parser from the
466 -- source program, and off for any nodes built by the analyzer or
467 -- expander. It indicates that a node comes from the original source.
468 -- This flag is defined in Atree.
470 -- Error_Posted (Flag3)
471 -- This flag is used to avoid multiple error messages being posted on or
472 -- referring to the same node. This flag is set if an error message
473 -- refers to a node or is posted on its source location, and has the
474 -- effect of inhibiting further messages involving this same node.
476 -- Has_Dynamic_Length_Check (Flag10-Sem)
477 -- This flag is present on all nodes. It is set to indicate that one of
478 -- the routines in unit Checks has generated a length check action which
479 -- has been inserted at the flagged node. This is used to avoid the
480 -- generation of duplicate checks.
482 -- Has_Dynamic_Range_Check (Flag12-Sem)
483 -- This flag is present on all nodes. It is set to indicate that one of
484 -- the routines in unit Checks has generated a range check action which
485 -- has been inserted at the flagged node. This is used to avoid the
486 -- generation of duplicate checks.
488 ------------------------------------
489 -- Description of Semantic Fields --
490 ------------------------------------
492 -- The meaning of the syntactic fields is generally clear from their names
493 -- without any further description, since the names are chosen to
494 -- correspond very closely to the syntax in the reference manual. This
495 -- section describes the usage of the semantic fields, which are used to
496 -- contain additional information determined during semantic analysis.
498 -- ABE_Is_Certain (Flag18-Sem)
499 -- This flag is set in an instantiation node or a call node is determined
500 -- to be sure to raise an ABE. This is used to trigger special handling
501 -- of such cases, particularly in the instantiation case where we avoid
502 -- instantiating the body if this flag is set. This flag is also present
503 -- in an N_Formal_Package_Declaration_Node since formal package
504 -- declarations are treated like instantiations, but it is always set to
505 -- False in this context.
507 -- Accept_Handler_Records (List5-Sem)
508 -- This field is present only in an N_Accept_Alternative node. It is used
509 -- to temporarily hold the exception handler records from an accept
510 -- statement in a selective accept. These exception handlers will
511 -- eventually be placed in the Handler_Records list of the procedure
512 -- built for this accept (see Expand_N_Selective_Accept procedure in
513 -- Exp_Ch9 for further details).
515 -- Access_Types_To_Process (Elist2-Sem)
516 -- Present in N_Freeze_Entity nodes for Incomplete or private types.
517 -- Contains the list of access types which may require specific treatment
518 -- when the nature of the type completion is completely known. An example
519 -- of such treatement is the generation of the associated_final_chain.
521 -- Actions (List1-Sem)
522 -- This field contains a sequence of actions that are associated with the
523 -- node holding the field. See the individual node types for details of
524 -- how this field is used, as well as the description of the specific use
525 -- for a particular node type.
527 -- Activation_Chain_Entity (Node3-Sem)
528 -- This is used in tree nodes representing task activators (blocks,
529 -- subprogram bodies, package declarations, and task bodies). It is
530 -- initially Empty, and then gets set to point to the entity for the
531 -- declared Activation_Chain variable when the first task is declared.
532 -- When tasks are declared in the corresponding declarative region this
533 -- entity is located by name (its name is always _Chain) and the declared
534 -- tasks are added to the chain.
536 -- Acts_As_Spec (Flag4-Sem)
537 -- A flag set in the N_Subprogram_Body node for a subprogram body which
538 -- is acting as its own spec. This flag also appears in the compilation
539 -- unit node at the library level for such a subprogram (see further
540 -- description in spec of Lib package).
542 -- Actual_Designated_Subtype (Node2-Sem)
543 -- Present in N_Free_Statement and N_Explicit_Dereference nodes. If gigi
544 -- needs to known the dynamic constrained subtype of the designated
545 -- object, this attribute is set to that type. This is done for
546 -- N_Free_Statements for access-to-classwide types and access to
547 -- unconstrained packed array types, and for N_Explicit_Dereference when
548 -- the designated type is an unconstrained packed array and the
549 -- dereference is the prefix of a 'Size attribute reference.
551 -- Aggregate_Bounds (Node3-Sem)
552 -- Present in array N_Aggregate nodes. If the aggregate contains
553 -- component associations this field points to an N_Range node whose
554 -- bounds give the lowest and highest discrete choice values. If the
555 -- named aggregate contains a dynamic or null choice this field is empty.
556 -- If the aggregate contains positional elements this field points to an
557 -- N_Integer_Literal node giving the number of positional elements. Note
558 -- that if the aggregate contains positional elements and an other choice
559 -- the N_Integer_Literal only accounts for the number of positional
562 -- All_Others (Flag11-Sem)
563 -- Present in an N_Others_Choice node. This flag is set in the case of an
564 -- others exception where all exceptions are to be caught, even those
565 -- that are not normally handled (in particular the tasking abort
566 -- signal). This is used for translation of the at end handler into a
567 -- normal exception handler.
569 -- Assignment_OK (Flag15-Sem)
570 -- This flag is set in a subexpression node for an object, indicating
571 -- that the associated object can be modified, even if this would not
572 -- normally be permissible (either by direct assignment, or by being
573 -- passed as an out or in-out parameter). This is used by the expander
574 -- for a number of purposes, including initialzation of constants and
575 -- limited type objects (such as tasks), setting discriminant fields,
576 -- setting tag values, etc. N_Object_Declaration nodes also have this
577 -- flag defined. Here it is used to indicate that an initialization
578 -- expression is valid, even where it would normally not be allowed (e.g.
579 -- where the type involved is limited).
581 -- Associated_Node (Node4-Sem)
582 -- Present in nodes that can denote an entity: identifiers, character
583 -- literals, operator symbols, expanded names, operator nodes, and
584 -- attribute reference nodes (all these nodes have an Entity field). This
585 -- field is also present in N_Aggregate, N_Selected_Component, and
586 -- N_Extension_Aggregate nodes. This field is used in generic processing
587 -- to create links between the generic template and the generic copy. See
588 -- Sem_Ch12.Get_Associated_Node for full details. Note that this field
589 -- overlaps Entity, which is fine, since, as explained in Sem_Ch12, the
590 -- normal function of Entity is not required at the point where the
591 -- Associated_Node is set. Note also, that in generic templates, this
592 -- means that the Entity field does not necessarily point to an Entity.
593 -- Since the back end is expected to ignore generic templates, this is
596 -- At_End_Proc (Node1)
597 -- This field is present in an N_Handled_Sequence_Of_Statements node. It
598 -- contains an identifier reference for the cleanup procedure to be
599 -- called. See description of this node for further details.
601 -- Backwards_OK (Flag6-Sem)
602 -- A flag present in the N_Assignment_Statement node. It is used only if
603 -- the type being assigned is an array type, and is set if analysis
604 -- determines that it is definitely safe to do the copy backwards, i.e.
605 -- starting at the highest addressed element. Note that if neither of the
606 -- flags Forwards_OK or Backwards_OK is set, it means that the front end
607 -- could not determine that either direction is definitely safe, and a
608 -- runtime check is required.
610 -- Body_To_Inline (Node3-Sem)
611 -- present in subprogram declarations. Denotes analyzed but unexpanded
612 -- body of subprogram, to be used when inlining calls. Present when the
613 -- subprogram has an Inline pragma and inlining is enabled. If the
614 -- declaration is completed by a renaming_as_body, and the renamed en-
615 -- tity is a subprogram, the Body_To_Inline is the name of that entity,
616 -- which is used directly in later calls to the original subprogram.
618 -- Body_Required (Flag13-Sem)
619 -- A flag that appears in the N_Compilation_Unit node indicating that the
620 -- corresponding unit requires a body. For the package case, this
621 -- indicates that a completion is required. In Ada 95, if the flag is not
622 -- set for the package case, then a body may not be present. In Ada 83,
623 -- if the flag is not set for the package case, then body is optional.
624 -- For a subprogram declaration, the flag is set except in the case where
625 -- a pragma Import or Interface applies, in which case no body is
626 -- permitted (in Ada 83 or Ada 95).
628 -- By_Ref (Flag5-Sem)
629 -- A flag present in the N_Return_Statement_Node. It is set when the
630 -- returned expression is already allocated on the secondary stack and
631 -- thus the result is passed by reference rather than copied another
634 -- Check_Address_Alignment (Flag11-Sem)
635 -- A flag present in N_Attribute_Definition clause for a 'Address
636 -- attribute definition. This flag is set if a dynamic check should be
637 -- generated at the freeze point for the entity to which this address
638 -- clause applies. The reason that we need this flag is that we want to
639 -- check for range checks being suppressed at the point where the
640 -- attribute definition clause is given, rather than testing this at the
643 -- Compile_Time_Known_Aggregate (Flag18-Sem)
644 -- Present in N_Aggregate nodes. Set for aggregates which can be fully
645 -- evaluated at compile time without raising constraint error. Such
646 -- aggregates can be passed as is to Gigi without any expansion. See
647 -- Sem_Aggr for the specific conditions under which an aggregate has this
648 -- flag set. See also the flag Static_Processing_OK.
650 -- Condition_Actions (List3-Sem)
651 -- This field appears in else-if nodes and in the iteration scheme node
652 -- for while loops. This field is only used during semantic processing to
653 -- temporarily hold actions inserted into the tree. In the tree passed to
654 -- gigi, the condition actions field is always set to No_List. For
655 -- details on how this field is used, see the routine Insert_Actions in
656 -- package Exp_Util, and also the expansion routines for the relevant
659 -- Controlling_Argument (Node1-Sem)
660 -- This field is set in procedure and function call nodes if the call is
661 -- a dispatching call (it is Empty for a non-dispatching call). It
662 -- indicates the source of the call's controlling tag. For procedure
663 -- calls, the Controlling_Argument is one of the actuals. For function
664 -- that has a dispatching result, it is an entity in the context of the
665 -- call that can provide a tag, or else it is the tag of the root type of
666 -- the class. It can also specify a tag directly rather than being a
667 -- tagged object. The latter is needed by the implementations of AI-239
670 -- Conversion_OK (Flag14-Sem)
671 -- A flag set on type conversion nodes to indicate that the conversion is
672 -- to be considered as being valid, even though it is the case that the
673 -- conversion is not valid Ada. This is used for Enum_Rep, Fixed_Value
674 -- and Integer_Value attributes, for internal conversions done for
675 -- fixed-point operations, and for certain conversions for calls to
676 -- initialization procedures. If Conversion_OK is set, then Etype must be
677 -- set (the analyzer assumes that Etype has been set). For the case of
678 -- fixed-point operands, it also indicates that the conversion is to be
679 -- direct conversion of the underlying integer result, with no regard to
680 -- the small operand.
682 -- Corresponding_Body (Node5-Sem)
683 -- This field is set in subprogram declarations, package declarations,
684 -- entry declarations of protected types, and in generic units. It
685 -- points to the defining entity for the corresponding body (NOT the
686 -- node for the body itself).
688 -- Corresponding_Formal_Spec (Node3-Sem)
689 -- This field is set in subprogram renaming declarations, where it points
690 -- to the defining entity for a formal subprogram in the case where the
691 -- renaming corresponds to a generic formal subprogram association in an
692 -- instantiation. The field is Empty if the renaming does not correspond
693 -- to such a formal association.
695 -- Corresponding_Generic_Association (Node5-Sem)
696 -- This field is defined for object declarations and object renaming
697 -- declarations. It is set for the declarations within an instance that
698 -- map generic formals to their actuals. If set, the field points to
699 -- a generic_association which is the original parent of the expression
700 -- or name appearing in the declaration. This simplifies ASIS queries.
702 -- Corresponding_Integer_Value (Uint4-Sem)
703 -- This field is set in real literals of fixed-point types (it is not
704 -- used for floating-point types). It contains the integer value used
705 -- to represent the fixed-point value. It is also set on the universal
706 -- real literals used to represent bounds of fixed-point base types
707 -- and their first named subtypes.
709 -- Corresponding_Spec (Node5-Sem)
710 -- This field is set in subprogram, package, task, and protected body
711 -- nodes, where it points to the defining entity in the corresponding
712 -- spec. The attribute is also set in N_With_Clause nodes, where it
713 -- points to the defining entity for the with'ed spec, and in a
714 -- subprogram renaming declaration when it is a Renaming_As_Body. The
715 -- field is Empty if there is no corresponding spec, as in the case of a
716 -- subprogram body that serves as its own spec.
718 -- Corresponding_Stub (Node3-Sem)
719 -- This field is present in an N_Subunit node. It holds the node in
720 -- the parent unit that is the stub declaration for the subunit. it is
721 -- set when analysis of the stub forces loading of the proper body. If
722 -- expansion of the proper body creates new declarative nodes, they are
723 -- inserted at the point of the corresponding_stub.
725 -- Dcheck_Function (Node5-Sem)
726 -- This field is present in an N_Variant node, It references the entity
727 -- for the discriminant checking function for the variant.
729 -- Debug_Statement (Node3)
730 -- This field is present in an N_Pragma node. It is used only for a Debug
731 -- pragma. The parameter is of the form of an expression, as required by
732 -- the pragma syntax, but is actually a procedure call. To simplify
733 -- semantic processing, the parser creates a copy of the argument
734 -- rearranged into a procedure call statement and places it in the
735 -- Debug_Statement field. Note that this field is considered syntactic
736 -- field, since it is created by the parser.
738 -- Default_Expression (Node5-Sem)
739 -- This field is Empty if there is no default expression. If there is a
740 -- simple default expression (one with no side effects), then this field
741 -- simply contains a copy of the Expression field (both point to the tree
742 -- for the default expression). Default_Expression is used for
743 -- conformance checking.
745 -- Delay_Finalize_Attach (Flag14-Sem)
746 -- This flag is present in an N_Object_Declaration node. If it is set,
747 -- then in the case of a controlled type being declared and initialized,
748 -- the normal code for attaching the result to the appropriate local
749 -- finalization list is suppressed. This is used for functions that
750 -- return controlled types without using the secondary stack, where it is
751 -- the caller who must do the attachment.
753 -- Discr_Check_Funcs_Built (Flag11-Sem)
754 -- This flag is present in N_Full_Type_Declaration nodes. It is set when
755 -- discriminant checking functions are constructed. The purpose is to
756 -- avoid attempting to set these functions more than once.
758 -- Do_Accessibility_Check (Flag13-Sem)
759 -- This flag is set on N_Parameter_Specification nodes to indicate
760 -- that an accessibility check is required for the parameter. It is
761 -- not yet decided who takes care of this check (TBD ???).
763 -- Do_Discriminant_Check (Flag13-Sem)
764 -- This flag is set on N_Selected_Component nodes to indicate that a
765 -- discriminant check is required using the discriminant check routine
766 -- associated with the selector. The actual check is generated by the
767 -- expander when processing selected components.
769 -- Do_Division_Check (Flag13-Sem)
770 -- This flag is set on a division operator (/ mod rem) to indicate
771 -- that a zero divide check is required. The actual check is dealt
772 -- with by the backend (all the front end does is to set the flag).
774 -- Do_Length_Check (Flag4-Sem)
775 -- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
776 -- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
777 -- is required. It is not determined who deals with this flag (???).
779 -- Do_Overflow_Check (Flag17-Sem)
780 -- This flag is set on an operator where an overflow check is required on
781 -- the operation. The actual check is dealt with by the backend (all the
782 -- front end does is to set the flag). The other cases where this flag is
783 -- used is on a Type_Conversion node and for attribute reference nodes.
784 -- For a type conversion, it means that the conversion is from one base
785 -- type to another, and the value may not fit in the target base type.
786 -- See also the description of Do_Range_Check for this case. The only
787 -- attribute references which use this flag are Pred and Succ, where it
788 -- means that the result should be checked for going outside the base
791 -- Do_Range_Check (Flag9-Sem)
792 -- This flag is set on an expression which appears in a context where
793 -- a range check is required. The target type is clear from the
794 -- context. The contexts in which this flag can appear are limited to
797 -- Right side of an assignment. In this case the target type is
798 -- taken from the left side of the assignment, which is referenced
799 -- by the Name of the N_Assignment_Statement node.
801 -- Subscript expressions in an indexed component. In this case the
802 -- target type is determined from the type of the array, which is
803 -- referenced by the Prefix of the N_Indexed_Component node.
805 -- Argument expression for a parameter, appearing either directly in
806 -- the Parameter_Associations list of a call or as the Expression of an
807 -- N_Parameter_Association node that appears in this list. In either
808 -- case, the check is against the type of the formal. Note that the
809 -- flag is relevant only in IN and IN OUT parameters, and will be
810 -- ignored for OUT parameters, where no check is required in the call,
811 -- and if a check is required on the return, it is generated explicitly
812 -- with a type conversion.
814 -- Initialization expression for the initial value in an object
815 -- declaration. In this case the Do_Range_Check flag is set on
816 -- the initialization expression, and the check is against the
817 -- range of the type of the object being declared.
819 -- The expression of a type conversion. In this case the range check is
820 -- against the target type of the conversion. See also the use of
821 -- Do_Overflow_Check on a type conversion. The distinction is that the
822 -- overflow check protects against a value that is outside the range of
823 -- the target base type, whereas a range check checks that the
824 -- resulting value (which is a value of the base type of the target
825 -- type), satisfies the range constraint of the target type.
827 -- Note: when a range check is required in contexts other than those
828 -- listed above (e.g. in a return statement), an additional type
829 -- conversion node is introduced to represent the required check.
831 -- Do_Storage_Check (Flag17-Sem)
832 -- This flag is set in an N_Allocator node to indicate that a storage
833 -- check is required for the allocation, or in an N_Subprogram_Body node
834 -- to indicate that a stack check is required in the subprogram prolog.
835 -- The N_Allocator case is handled by the routine that expands the call
836 -- to the runtime routine. The N_Subprogram_Body case is handled by the
837 -- backend, and all the semantics does is set the flag.
839 -- Do_Tag_Check (Flag13-Sem)
840 -- This flag is set on an N_Assignment_Statement, N_Function_Call,
841 -- N_Procedure_Call_Statement, N_Type_Conversion or N_Return_Statememt
842 -- node to indicate that the tag check can be suppressed. It is not
843 -- yet decided how this flag is used (TBD ???).
845 -- Elaborate_Present (Flag4-Sem)
846 -- This flag is set in the N_With_Clause node to indicate that pragma
847 -- Elaborate pragma appears for the with'ed units.
849 -- Elaborate_All_Desirable (Flag9-Sem)
850 -- This flag is set in the N_With_Clause mode to indicate that the static
851 -- elaboration processing has determined that an Elaborate_All pragma is
852 -- desirable for correct elaboration for this unit.
854 -- Elaborate_All_Present (Flag14-Sem)
855 -- This flag is set in the N_With_Clause node to indicate that a
856 -- pragma Elaborate_All pragma appears for the with'ed units.
858 -- Elaborate_Desirable (Flag11-Sem)
859 -- This flag is set in the N_With_Clause mode to indicate that the static
860 -- elaboration processing has determined that an Elaborate pragma is
861 -- desirable for correct elaboration for this unit.
863 -- Elaboration_Boolean (Node2-Sem)
864 -- This field is present in function and procedure specification
865 -- nodes. If set, it points to the entity for a Boolean flag that
866 -- must be tested for certain calls to check for access before
867 -- elaboration. See body of Sem_Elab for further details. This
868 -- field is Empty if no elaboration boolean is required.
870 -- Else_Actions (List3-Sem)
871 -- This field is present in conditional expression nodes. During code
872 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
873 -- actions at an appropriate place in the tree to get elaborated at the
874 -- right time. For conditional expressions, we have to be sure that the
875 -- actions for the Else branch are only elaborated if the condition is
876 -- False. The Else_Actions field is used as a temporary parking place for
877 -- these actions. The final tree is always rewritten to eliminate the
878 -- need for this field, so in the tree passed to Gigi, this field is
879 -- always set to No_List.
881 -- Enclosing_Variant (Node2-Sem)
882 -- This field is present in the N_Variant node and identifies the
883 -- Node_Id corresponding to the immediately enclosing variant when
884 -- the variant is nested, and N_Empty otherwise. Set during semantic
885 -- processing of the variant part of a record type.
887 -- Entity (Node4-Sem)
888 -- Appears in all direct names (identifier, character literal, operator
889 -- symbol), as well as expanded names, and attributes that denote
890 -- entities, such as 'Class. Points to the entity for the corresponding
891 -- defining occurrence. Set after name resolution. In the case of
892 -- identifiers in a WITH list, the corresponding defining occurrence is
893 -- in a separately compiled file, and this pointer must be set using the
894 -- library Load procedure. Note that during name resolution, the value in
895 -- Entity may be temporarily incorrect (e.g. during overload resolution,
896 -- Entity is initially set to the first possible correct interpretation,
897 -- and then later modified if necessary to contain the correct value
898 -- after resolution). Note that this field overlaps Associated_Node,
899 -- which is used during generic processing (see Sem_Ch12 for details).
900 -- Note also that in generic templates, this means that the Entity field
901 -- does not always point to an Entity. Since the back end is expected to
902 -- ignore generic templates, this is harmless.
904 -- Entity_Or_Associated_Node (Node4-Sem)
905 -- A synonym for both Entity and Associated_Node. Used by convention in
906 -- the code when referencing this field in cases where it is not known
907 -- whether the field contains an Entity or an Associated_Node.
910 -- Appears in all expression nodes, all direct names, and all entities.
911 -- Points to the entity for the related type. Set after type resolution.
912 -- Normally this is the actual subtype of the expression. However, in
913 -- certain contexts such as the right side of an assignment, subscripts,
914 -- arguments to calls, returned value in a function, initial value etc.
915 -- it is the desired target type. In the event that this is different
916 -- from the actual type, the Do_Range_Check flag will be set if a range
917 -- check is required. Note: if the Is_Overloaded flag is set, then Etype
918 -- points to an essentially arbitrary choice from the possible set of
921 -- Exception_Junk (Flag7-Sem)
922 -- This flag is set in a various nodes appearing in a statement sequence
923 -- to indicate that the corresponding node is an artifact of the
924 -- generated code for exception handling, and should be ignored when
925 -- analyzing the control flow of the relevant sequence of statements
926 -- (e.g. to check that it does not end with a bad return statement).
928 -- Expansion_Delayed (Flag11-Sem)
929 -- Set on aggregates and extension aggregates that need a top-down rather
930 -- than bottom up expansion. Typically aggregate expansion happens bottom
931 -- up. For nested aggregates the expansion is delayed until the enclosing
932 -- aggregate itself is expanded, e.g. in the context of a declaration. To
933 -- delay it we set this flag. This is done to avoid creating a temporary
934 -- for each level of a nested aggregates, and also to prevent the
935 -- premature generation of constraint checks. This is also a requirement
936 -- if we want to generate the proper attachment to the internal
937 -- finalization lists (for record with controlled components). Top down
938 -- expansion of aggregates is also used for in-place array aggregate
939 -- assignment or initialization. When the full context is known, the
940 -- target of the assignment or initialization is used to generate the
941 -- left-hand side of individual assignment to each sub-component.
943 -- First_Inlined_Subprogram (Node3-Sem)
944 -- Present in the N_Compilation_Unit node for the main program. Points to
945 -- a chain of entities for subprograms that are to be inlined. The
946 -- Next_Inlined_Subprogram field of these entities is used as a link
947 -- pointer with Empty marking the end of the list. This field is Empty if
948 -- there are no inlined subprograms or inlining is not active.
950 -- First_Named_Actual (Node4-Sem)
951 -- Present in procedure call statement and function call nodes, and also
952 -- in Intrinsic nodes. Set during semantic analysis to point to the first
953 -- named parameter where parameters are ordered by declaration order (as
954 -- opposed to the actual order in the call which may be different due to
955 -- named associations). Note: this field points to the explicit actual
956 -- parameter itself, not the N_Parameter_Association node (its parent).
958 -- First_Real_Statement (Node2-Sem)
959 -- Present in N_Handled_Sequence_Of_Statements node. Normally set to
960 -- Empty. Used only when declarations are moved into the statement part
961 -- of a construct as a result of wrapping an AT END handler that is
962 -- required to cover the declarations. In this case, this field is used
963 -- to remember the location in the statements list of the first real
964 -- statement, i.e. the statement that used to be first in the statement
965 -- list before the declarations were prepended.
967 -- First_Subtype_Link (Node5-Sem)
968 -- Present in N_Freeze_Entity node for an anonymous base type that is
969 -- implicitly created by the declaration of a first subtype. It points to
970 -- the entity for the first subtype.
972 -- Float_Truncate (Flag11-Sem)
973 -- A flag present in type conversion nodes. This is used for float to
974 -- integer conversions where truncation is required rather than rounding.
975 -- Note that Gigi does not handle type conversions from real to integer
976 -- with rounding (see Expand_N_Type_Conversion).
978 -- Forwards_OK (Flag5-Sem)
979 -- A flag present in the N_Assignment_Statement node. It is used only if
980 -- the type being assigned is an array type, and is set if analysis
981 -- determines that it is definitely safe to do the copy forwards, i.e.
982 -- starting at the lowest addressed element. Note that if neither of the
983 -- flags Forwards_OK or Backwards_OK is set, it means that the front end
984 -- could not determine that either direction is definitely safe, and a
985 -- runtime check is required.
987 -- From_At_Mod (Flag4-Sem)
988 -- This flag is set on the attribute definition clause node that is
989 -- generated by a transformation of an at mod phrase in a record
990 -- representation clause. This is used to give slightly different (Ada 83
991 -- compatible) semantics to such a clause, namely it is used to specify a
992 -- minimum acceptable alignment for the base type and all subtypes. In
993 -- Ada 95 terms, the actual alignment of the base type and all subtypes
994 -- must be a multiple of the given value, and the representation clause
995 -- is considered to be type specific instead of subtype specific.
997 -- From_Default (Flag6-Sem)
998 -- This flag is set on the subprogram renaming declaration created in an
999 -- instance for a formal subprogram, when the formal is declared with a
1000 -- box, and there is no explicit actual. If the flag is present, the
1001 -- declaration is treated as an implicit reference to the formal in the
1004 -- Generic_Parent (Node5-Sem)
1005 -- Generic_parent is defined on declaration nodes that are instances. The
1006 -- value of Generic_Parent is the generic entity from which the instance
1007 -- is obtained. Generic_Parent is also defined for the renaming
1008 -- declarations and object declarations created for the actuals in an
1009 -- instantiation. The generic parent of such a declaration is the
1010 -- corresponding generic association in the Instantiation node.
1012 -- Generic_Parent_Type (Node4-Sem)
1013 -- Generic_Parent_Type is defined on Subtype_Declaration nodes for the
1014 -- actuals of formal private and derived types. Within the instance, the
1015 -- operations on the actual are those inherited from the parent. For a
1016 -- formal private type, the parent type is the generic type itself. The
1017 -- Generic_Parent_Type is also used in an instance to determine whether a
1018 -- private operation overrides an inherited one.
1020 -- Handler_List_Entry (Node2-Sem)
1021 -- This field is present in N_Object_Declaration nodes. It is set only
1022 -- for the Handler_Record entry generated for an exception in zero cost
1023 -- exception handling mode. It references the corresponding item in the
1024 -- handler list, and is used to delete this entry if the corresponding
1025 -- handler is deleted during optimization. For further details on why
1026 -- this is required, see Exp_Ch11.Remove_Handler_Entries.
1028 -- Has_No_Elaboration_Code (Flag17-Sem)
1029 -- A flag that appears in the N_Compilation_Unit node to indicate whether
1030 -- or not elaboration code is present for this unit. It is initially set
1031 -- true for subprogram specs and bodies and for all generic units and
1032 -- false for non-generic package specs and bodies. Gigi may set the flag
1033 -- in the non-generic package case if it determines that no elaboration
1034 -- code is generated. Note that this flag is not related to the
1035 -- Is_Preelaborated status, there can be preelaborated packages that
1036 -- generate elaboration code, and non- preelaborated packages which do
1037 -- not generate elaboration code.
1039 -- Has_Priority_Pragma (Flag6-Sem)
1040 -- A flag present in N_Subprogram_Body, N_Task_Definition and
1041 -- N_Protected_Definition nodes to flag the presence of either a Priority
1042 -- or Interrupt_Priority pragma in the declaration sequence (public or
1043 -- private in the task and protected cases)
1045 -- Has_Private_View (Flag11-Sem)
1046 -- A flag present in generic nodes that have an entity, to indicate that
1047 -- the node has a private type. Used to exchange private and full
1048 -- declarations if the visibility at instantiation is different from the
1049 -- visibility at generic definition.
1051 -- Has_Storage_Size_Pragma (Flag5-Sem)
1052 -- A flag present in an N_Task_Definition node to flag the presence of a
1053 -- Storage_Size pragma.
1055 -- Has_Task_Info_Pragma (Flag7-Sem)
1056 -- A flag present in an N_Task_Definition node to flag the presence of a
1057 -- Task_Info pragma. Used to detect duplicate pragmas.
1059 -- Has_Task_Name_Pragma (Flag8-Sem)
1060 -- A flag present in N_Task_Definition nodes to flag the presence of a
1061 -- Task_Name pragma in the declaration sequence for the task.
1063 -- Has_Wide_Character (Flag11-Sem)
1064 -- Present in string literals, set if any wide character (i.e. character
1065 -- code outside the Character range) appears in the string.
1067 -- Hidden_By_Use_Clause (Elist4-Sem)
1068 -- An entity list present in use clauses that appear within
1069 -- instantiations. For the resolution of local entities, entities
1070 -- introduced by these use clauses have priority over global ones, and
1071 -- outer entities must be explicitly hidden/restored on exit.
1073 -- Implicit_With (Flag16-Sem)
1074 -- This flag is set in the N_With_Clause node that is implicitly
1075 -- generated for runtime units that are loaded by the expander, and also
1076 -- for package System, if it is loaded implicitly by a use of the
1077 -- 'Address or 'Tag attribute.
1079 -- Includes_Infinities (Flag11-Sem)
1080 -- This flag is present in N_Range nodes. It is set for the range of
1081 -- unconstrained float types defined in Standard, which include not only
1082 -- the given range of values, but also legtitimately can include infinite
1083 -- values. This flag is false for any float type for which an explicit
1084 -- range is given by the programmer, even if that range is identical to
1085 -- the range for Float.
1087 -- Instance_Spec (Node5-Sem)
1088 -- This field is present in generic instantiation nodes, and also in
1089 -- formal package declaration nodes (formal package declarations are
1090 -- treated in a manner very similar to package instantiations). It points
1091 -- to the node for the spec of the instance, inserted as part of the
1092 -- semantic processing for instantiations in Sem_Ch12.
1094 -- Is_Asynchronous_Call_Block (Flag7-Sem)
1095 -- A flag set in a Block_Statement node to indicate that it is the
1096 -- expansion of an asynchronous entry call. Such a block needs cleanup
1097 -- handler to assure that the call is cancelled.
1099 -- Is_Component_Left_Opnd (Flag13-Sem)
1100 -- Is_Component_Right_Opnd (Flag14-Sem)
1101 -- Present in concatenation nodes, to indicate that the corresponding
1102 -- operand is of the component type of the result. Used in resolving
1103 -- concatenation nodes in instances.
1105 -- Is_Controlling_Actual (Flag16-Sem)
1106 -- This flag is set on in an expression that is a controlling argument in
1107 -- a dispatching call. It is off in all other cases. See Sem_Disp for
1108 -- details of its use.
1110 -- Is_In_Discriminant_Check (Flag11-Sem)
1111 -- This flag is present in a selected component, and is used to indicate
1112 -- that the reference occurs within a discriminant check. The
1113 -- significance is that optimizations based on assuming that the
1114 -- discriminant check has a correct value cannot be performed in this
1115 -- case (or the disriminant check may be optimized away!)
1117 -- Is_Machine_Number (Flag11-Sem)
1118 -- This flag is set in an N_Real_Literal node to indicate that the value
1119 -- is a machine number. This avoids some unnecessary cases of converting
1120 -- real literals to machine numbers.
1122 -- Is_Null_Loop (Flag16-Sem)
1123 -- This flag is set in an N_Loop_Statement node if the corresponding loop
1124 -- can be determined to be null at compile time. This is used to suppress
1125 -- any warnings that would otherwise be issued inside the loop since they
1126 -- are probably not useful.
1128 -- Is_Overloaded (Flag5-Sem)
1129 -- A flag present in all expression nodes. Used temporarily during
1130 -- overloading determination. The setting of this flag is not relevant
1131 -- once overloading analysis is complete.
1133 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
1134 -- A flag present only in N_Op_Expon nodes. It is set when the
1135 -- exponentiation is of the forma 2 ** N, where the type of N is an
1136 -- unsigned integral subtype whose size does not exceed the size of
1137 -- Standard_Integer (i.e. a type that can be safely converted to
1138 -- Natural), and the exponentiation appears as the right operand of an
1139 -- integer multiplication or an integer division where the dividend is
1140 -- unsigned. It is also required that overflow checking is off for both
1141 -- the exponentiation and the multiply/divide node. If this set of
1142 -- conditions holds, and the flag is set, then the division or
1143 -- multiplication can be (and is) converted to a shift.
1145 -- Is_Overloaded (Flag5-Sem)
1146 -- A flag present in all expression nodes. Used temporarily during
1147 -- overloading determination. The setting of this flag is not relevant
1148 -- once overloading analysis is complete.
1150 -- Is_Protected_Subprogram_Body (Flag7-Sem)
1151 -- A flag set in a Subprogram_Body block to indicate that it is the
1152 -- implemenation of a protected subprogram. Such a body needs cleanup
1153 -- handler to make sure that the associated protected object is unlocked
1154 -- when the subprogram completes.
1156 -- Is_Static_Expression (Flag6-Sem)
1157 -- Indicates that an expression is a static expression (RM 4.9). See spec
1158 -- of package Sem_Eval for full details on the use of this flag.
1160 -- Is_Subprogram_Descriptor (Flag16-Sem)
1161 -- Present in N_Object_Declaration, and set only for the object
1162 -- declaration generated for a subprogram descriptor in fast exception
1163 -- mode. See Exp_Ch11 for details of use.
1165 -- Is_Task_Allocation_Block (Flag6-Sem)
1166 -- A flag set in a Block_Statement node to indicate that it is the
1167 -- expansion of a task allocator, or the allocator of an object
1168 -- containing tasks. Such a block requires a cleanup handler to call
1169 -- Expunge_Unactivted_Tasks to complete any tasks that have been
1170 -- allocated but not activated when the allocator completes abnormally.
1172 -- Is_Task_Master (Flag5-Sem)
1173 -- A flag set in a Subprogram_Body, Block_Statement or Task_Body node to
1174 -- indicate that the construct is a task master (i.e. has declared tasks
1175 -- or declares an access to a task type).
1177 -- Itype (Node1-Sem)
1178 -- Used in N_Itype_Reference node to reference an itype for which it is
1179 -- important to ensure that it is defined. See description of this node
1180 -- for further details.
1182 -- Kill_Range_Check (Flag11-Sem)
1183 -- Used in an N_Unchecked_Type_Conversion node to indicate that the
1184 -- result should not be subjected to range checks. This is used for the
1185 -- implementation of Normalize_Scalars.
1187 -- Label_Construct (Node2-Sem)
1188 -- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
1189 -- N_Block_Statement or N_Loop_Statement node to which the label
1190 -- declaration applies. This is not currently used in the compiler
1191 -- itself, but it is useful in the implementation of ASIS queries.
1193 -- Library_Unit (Node4-Sem)
1194 -- In a stub node, Library_Unit points to the compilation unit node of
1195 -- the corresponding subunit.
1197 -- In a with clause node, Library_Unit points to the spec of the with'ed
1200 -- In a compilation unit node, the usage depends on the unit type:
1202 -- For a subprogram body, Library_Unit points to the compilation unit
1203 -- node of the corresponding spec, unless Acts_As_Spec is set, in which
1204 -- case it points to itself.
1206 -- For a package body, Library_Unit points to the compilation unit of
1207 -- the corresponding package spec.
1209 -- For a subprogram spec to which pragma Inline applies, Library_Unit
1210 -- points to the compilation unit node of the corresponding body, if
1211 -- inlining is active.
1213 -- For a generic declaration, Library_Unit points to the compilation
1214 -- unit node of the corresponding generic body.
1216 -- For a subunit, Library_Unit points to the compilation unit node of
1219 -- Note that this field is not used to hold the parent pointer for child
1220 -- unit (which might in any case need to use it for some other purpose as
1221 -- described above). Instead for a child unit, implicit with's are
1222 -- generated for all parents.
1224 -- Loop_Actions (List2-Sem)
1225 -- A list present in Component_Association nodes in array aggregates.
1226 -- Used to collect actions that must be executed within the loop because
1227 -- they may need to be evaluated anew each time through.
1229 -- Limited_View_Installed (Flag18-Sem)
1230 -- Present in With_Clauses and in package specifications. If set on
1231 -- with_clause, it indicates that this clause has created the current
1232 -- limited view of the designated package. On a package specification, it
1233 -- indicates that the limited view has already been created because the
1234 -- package is mentioned in a limited_with_clause in the closure of the
1235 -- unit being compiled.
1237 -- Must_Be_Byte_Aligned (Flag14-Sem)
1238 -- This flag is present in N_Attribute_Reference nodes. It can be set
1239 -- only for the Address and Unrestricted_Access attributes. If set it
1240 -- means that the object for which the address/access is given must be on
1241 -- a byte (more accurately a storage unit) boundary. If necessary, a copy
1242 -- of the object is to be made before taking the address (this copy is in
1243 -- the current scope on the stack frame). This is used for certain cases
1244 -- of code generated by the expander that passes parameters by address.
1246 -- The reason the copy is not made by the front end is that the back end
1247 -- has more information about type layout and may be able to (but is not
1248 -- guaranteed to) prevent making unnecessary copies.
1250 -- Must_Not_Freeze (Flag8-Sem)
1251 -- A flag present in all expression nodes. Normally expressions cause
1252 -- freezing as described in the RM. If this flag is set, then this is
1253 -- inhibited. This is used by the analyzer and expander to label nodes
1254 -- that are created by semantic analysis or expansion and which must not
1255 -- cause freezing even though they normally would. This flag is also
1256 -- present in an N_Subtype_Indication node, since we also use these in
1257 -- calls to Freeze_Expression.
1259 -- Next_Entity (Node2-Sem)
1260 -- Present in defining identifiers, defining character literals and
1261 -- defining operator symbols (i.e. in all entities). The entities of a
1262 -- scope are chained, and this field is used as the forward pointer for
1263 -- this list. See Einfo for further details.
1265 -- Next_Named_Actual (Node4-Sem)
1266 -- Present in parameter association node. Set during semantic analysis to
1267 -- point to the next named parameter, where parameters are ordered by
1268 -- declaration order (as opposed to the actual order in the call, which
1269 -- may be different due to named associations). Not that this field
1270 -- points to the explicit actual parameter itself, not to the
1271 -- N_Parameter_Association node (its parent).
1273 -- Next_Rep_Item (Node4-Sem)
1274 -- Present in pragma nodes and attribute definition nodes. Used to link
1275 -- representation items that apply to an entity. See description of
1276 -- First_Rep_Item field in Einfo for full details.
1278 -- Next_Use_Clause (Node3-Sem)
1279 -- While use clauses are active during semantic processing, they are
1280 -- chained from the scope stack entry, using Next_Use_Clause as a link
1281 -- pointer, with Empty marking the end of the list. The head pointer is
1282 -- in the scope stack entry (First_Use_Clause). At the end of semantic
1283 -- processing (i.e. when Gigi sees the tree, the contents of this field
1284 -- is undefined and should not be read).
1286 -- No_Ctrl_Actions (Flag7-Sem)
1287 -- Present in N_Assignment_Statement to indicate that no finalize nor nor
1288 -- adjust should take place on this assignment eventhough the rhs is
1289 -- controlled. This is used in init procs and aggregate expansions where
1290 -- the generated assignments are more initialisations than real
1293 -- No_Elaboration_Check (Flag14-Sem)
1294 -- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
1295 -- that no elaboration check is needed on the call, because it appears in
1296 -- the context of a local Suppress pragma. This is used on calls within
1297 -- task bodies, where the actual elaboration checks are applied after
1298 -- analysis, when the local scope stack is not present.
1300 -- No_Entities_Ref_In_Spec (Flag8-Sem)
1301 -- Present in N_With_Clause nodes. Set if the with clause is on the
1302 -- package or subprogram spec where the main unit is the corresponding
1303 -- body, and no entities of the with'ed unit are referenced by the spec
1304 -- (an entity may still be referenced in the body, so this flag is used
1305 -- to generate the proper message (see Sem_Util.Check_Unused_Withs for
1308 -- No_Initialization (Flag13-Sem)
1309 -- Present in N_Object_Declaration & N_Allocator to indicate that the
1310 -- object must not be initialized (by Initialize or call to an init
1311 -- proc). This is needed for controlled aggregates. When the Object
1312 -- declaration has an expression, this flag means that this expression
1313 -- should not be taken into account (needed for in place initialization
1316 -- No_Truncation (Flag17-Sem)
1317 -- Present in N_Unchecked_Type_Conversion node. This flag has an effect
1318 -- only if the RM_Size of the source is greater than the RM_Size of the
1319 -- target for scalar operands. Normally in such a case we truncate some
1320 -- higher order bits of the source, and then sign/zero extend the result
1321 -- to form the output value. But if this flag is set, then we do not do
1322 -- any truncation, so for example, if an 8 bit input is converted to 5
1323 -- bit result which is in fact stored in 8 bits, then the high order
1324 -- three bits of the target result will be copied from the source. This
1325 -- is used for properly setting out of range values for use by pragmas
1326 -- Initialize_Scalars and Normalize_Scalars.
1328 -- Original_Discriminant (Node2-Sem)
1329 -- Present in identifiers. Used in references to discriminants that
1330 -- appear in generic units. Because the names of the discriminants may be
1331 -- different in an instance, we use this field to recover the position of
1332 -- the discriminant in the original type, and replace it with the
1333 -- discriminant at the same position in the instantiated type.
1335 -- Original_Entity (Node2-Sem)
1336 -- Present in numeric literals. Used to denote the named number that has
1337 -- been constant-folded into the given literal. If literal is from
1338 -- source, or the result of some other constant-folding operation, then
1339 -- Original_Entity is empty. This field is needed to handle properly
1340 -- named numbers in generic units, where the Associated_Node field
1341 -- interferes with the Entity field, making it impossible to preserve the
1342 -- original entity at the point of instantiation (ASIS problem).
1344 -- Others_Discrete_Choices (List1-Sem)
1345 -- When a case statement or variant is analyzed, the semantic checks
1346 -- determine the actual list of choices that correspond to an others
1347 -- choice. This list is materialized for later use by the expander and
1348 -- the Others_Discrete_Choices field of an N_Others_Choice node points to
1349 -- this materialized list of choices, which is in standard format for a
1350 -- list of discrete choices, except that of course it cannot contain an
1351 -- N_Others_Choice entry.
1353 -- Parameter_List_Truncated (Flag17-Sem)
1354 -- Present in N_Function_Call and N_Procedure_Call_Statement nodes. Set
1355 -- (for OpenVMS ports of GNAT only) if the parameter list is truncated as
1356 -- a result of a First_Optional_Parameter specification in an
1357 -- Import_Function, Import_Procedure, or Import_Valued_Procedure pragma.
1358 -- The truncation is done by the expander by removing trailing parameters
1359 -- from the argument list, in accordance with the set of rules allowing
1360 -- such parameter removal. In particular, parameters can be removed
1361 -- working from the end of the parameter list backwards up to and
1362 -- including the entry designated by First_Optional_Parameter in the
1363 -- Import pragma. Parameters can be removed if they are implicit and the
1364 -- default value is a known-at-compile-time value, including the use of
1365 -- the Null_Parameter attribute, or if explicit parameter values are
1366 -- present that match the corresponding defaults.
1368 -- Parent_Spec (Node4-Sem)
1369 -- For a library unit that is a child unit spec (package or subprogram
1370 -- declaration, generic declaration or instantiation, or library level
1371 -- rename, this field points to the compilation unit node for the parent
1372 -- package specification. This field is Empty for library bodies (the
1373 -- parent spec in this case can be found from the corresponding spec).
1375 -- Present_Expr (Uint3-Sem)
1376 -- Present in an N_Variant node. This has a meaningful value only after
1377 -- Gigi has back annotated the tree with representation information. At
1378 -- this point, it contains a reference to a gcc expression that depends
1379 -- on the values of one or more discriminants. Give a set of discriminant
1380 -- values, this expression evaluates to False (zero) if variant is not
1381 -- present, and True (non-zero) if it is present. See unit Repinfo for
1382 -- further details on gigi back annotation. This field is used during
1383 -- ASIS processing (data decomposition annex) to determine if a field is
1386 -- Print_In_Hex (Flag13-Sem)
1387 -- Set on an N_Integer_Literal node to indicate that the value should be
1388 -- printed in hexadecimal in the sprint listing. Has no effect on
1389 -- legality or semantics of program, only on the displayed output. This
1390 -- is used to clarify output from the packed array cases.
1392 -- Procedure_To_Call (Node4-Sem)
1393 -- Present in N_Allocator, N_Free_Statement, and N_Return_Statement
1394 -- nodes. References the entity for the declaration of the procedure to
1395 -- be called to accomplish the required operation (i.e. for the Allocate
1396 -- procedure in the case of N_Allocator and N_Return_Statement (for
1397 -- allocating the return value), and for the Deallocate procedure in the
1398 -- case of N_Free_Statement.
1400 -- Raises_Constraint_Error (Flag7-Sem)
1401 -- Set on an expression whose evaluation will definitely fail constraint
1402 -- error check. In the case of static expressions, this flag must be set
1403 -- accurately (and if it is set, the expression is typically illegal
1404 -- unless it appears as a non-elaborated branch of a short-circuit form).
1405 -- For a non-static expression, this flag may be set whenever an
1406 -- expression (e.g. an aggregate) is known to raise constraint error. If
1407 -- set, the expression definitely will raise CE if elaborated at runtime.
1408 -- If not set, the expression may or may not raise CE. In other words, on
1409 -- static expressions, the flag is set accurately, on non-static
1410 -- expressions it is set conservatively.
1412 -- Redundant_Use (Flag13-Sem)
1413 -- Present in nodes that can appear as an operand in a use clause or use
1414 -- type clause (identifiers, expanded names, attribute references). Set
1415 -- to indicate that a use is redundant (and therefore need not be undone
1418 -- Return_Type (Node2-Sem)
1419 -- Present in N_Return_Statement node. For a procedure, this is set to
1420 -- Standard_Void_Type. For a function it references the entity for the
1423 -- Rounded_Result (Flag18-Sem)
1424 -- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
1425 -- Used in the fixed-point cases to indicate that the result must be
1426 -- rounded as a result of the use of the 'Round attribute. Also used for
1427 -- integer N_Op_Divide nodes to indicate that the result should be
1428 -- rounded to the nearest integer (breaking ties away from zero), rather
1429 -- than truncated towards zero as usual. These rounded integer operations
1430 -- are the result of expansion of rounded fixed-point divide, conversion
1431 -- and multiplication operations.
1433 -- Scope (Node3-Sem)
1434 -- Present in defining identifiers, defining character literals and
1435 -- defining operator symbols (i.e. in all entities). The entities of a
1436 -- scope all use this field to reference the corresponding scope entity.
1437 -- See Einfo for further details.
1439 -- Shift_Count_OK (Flag4-Sem)
1440 -- A flag present in shift nodes to indicate that the shift count is
1441 -- known to be in range, i.e. is in the range from zero to word length
1442 -- minus one. If this flag is not set, then the shift count may be
1443 -- outside this range, i.e. larger than the word length, and the code
1444 -- must ensure that such shift counts give the appropriate result.
1446 -- Source_Type (Node1-Sem)
1447 -- Used in an N_Validate_Unchecked_Conversion node to point to the
1448 -- source type entity for the unchecked conversion instantiation
1449 -- which gigi must do size validation for.
1451 -- Static_Processing_OK (Flag4-Sem)
1452 -- Present in N_Aggregate nodes. When the Compile_Time_Known_Aggregate
1453 -- flag is set, the full value of the aggregate can be determined at
1454 -- compile time and the aggregate can be passed as is to the back-end. In
1455 -- this event it is irrelevant whether this flag is set or not. However,
1456 -- if the Compile_Time_Known_Aggregate flag is not set but
1457 -- Static_Processing_OK is set, the aggregate can (but need not) be
1458 -- converted into a compile time known aggregate by the expander. See
1459 -- Sem_Aggr for the specific conditions under which an aggregate has its
1460 -- Static_Processing_OK flag set.
1462 -- Storage_Pool (Node1-Sem)
1463 -- Present in N_Allocator, N_Free_Statement and N_Return_Statement nodes.
1464 -- References the entity for the storage pool to be used for the allocate
1465 -- or free call or for the allocation of the returned value from a
1466 -- function. Empty indicates that the global default default pool is to
1467 -- be used. Note that in the case of a return statement, this field is
1468 -- set only if the function returns value of a type whose size is not
1469 -- known at compile time on the secondary stack. It is never set on
1470 -- targets for which the parameter Functions_Return_By_DSP_On_Target in
1471 -- Targparm is True.
1473 -- Target_Type (Node2-Sem)
1474 -- Used in an N_Validate_Unchecked_Conversion node to point to the target
1475 -- type entity for the unchecked conversion instantiation which gigi must
1476 -- do size validation for.
1478 -- Then_Actions (List3-Sem)
1479 -- This field is present in conditional expression nodes. During code
1480 -- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
1481 -- actions at an appropriate place in the tree to get elaborated at the
1482 -- right time. For conditional expressions, we have to be sure that the
1483 -- actions for the Then branch are only elaborated if the condition is
1484 -- True. The Then_Actions field is used as a temporary parking place for
1485 -- these actions. The final tree is always rewritten to eliminate the
1486 -- need for this field, so in the tree passed to Gigi, this field is
1487 -- always set to No_List.
1489 -- Treat_Fixed_As_Integer (Flag14-Sem)
1490 -- This flag appears in operator nodes for divide, multiply, mod and rem
1491 -- on fixed-point operands. It indicates that the operands are to be
1492 -- treated as integer values, ignoring small values. This flag is only
1493 -- set as a result of expansion of fixed-point operations. Typically a
1494 -- fixed-point multplication in the source generates subsidiary
1495 -- multiplication and division operations that work with the underlying
1496 -- integer values and have this flag set. Note that this flag is not
1497 -- needed on other arithmetic operations (add, neg, subtract etc) since
1498 -- in these cases it is always the case that fixed is treated as integer.
1499 -- The Etype field MUST be set if this flag is set. The analyzer knows to
1500 -- leave such nodes alone, and whoever makes them must set the correct
1503 -- TSS_Elist (Elist3-Sem)
1504 -- Present in N_Freeze_Entity nodes. Holds an element list containing
1505 -- entries for each TSS (type support subprogram) associated with the
1506 -- frozen type. The elements of the list are the entities for the
1507 -- subprograms (see package Exp_TSS for further details). Set to No_Elist
1508 -- if there are no type support subprograms for the type or if the freeze
1509 -- node is not for a type.
1511 -- Unreferenced_In_Spec (Flag7-Sem)
1512 -- Present in N_With_Clause nodes. Set if the with clause is on the
1513 -- package or subprogram spec where the main unit is the corresponding
1514 -- body, and is not referenced by the spec (it may still be referenced by
1515 -- the body, so this flag is used to generate the proper message (see
1516 -- Sem_Util.Check_Unused_Withs for details)
1518 -- Was_Originally_Stub (Flag13-Sem)
1519 -- This flag is set in the node for a proper body that replaces stub.
1520 -- During the analysis procedure, stubs in some situations get rewritten
1521 -- by the corresponding bodies, and we set this flag to remember that
1522 -- this happened. Note that it is not good enough to rely on the use of
1523 -- Original_Node here because of the case of nested instantiations where
1524 -- the substituted node can be copied.
1526 -- Zero_Cost_Handling (Flag5-Sem)
1527 -- This flag is set in all handled sequence of statement and exception
1528 -- handler nodes if eceptions are to be handled using the zero-cost
1529 -- mechanism (see Ada.Exceptions and System.Exceptions in files
1530 -- a-except.ads/adb and s-except.ads for full details). What gigi needs
1531 -- to do for such a handler is simply to put the code in the handler
1532 -- somewhere. The front end has generated all necessary labels.
1534 --------------------------------------------------
1535 -- Note on Use of End_Label and End_Span Fields --
1536 --------------------------------------------------
1538 -- Several constructs have end lines:
1540 -- Loop Statement end loop [loop_IDENTIFIER];
1541 -- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
1542 -- Task Definition end [task_IDENTIFIER]
1543 -- Protected Definition end [protected_IDENTIFIER]
1544 -- Protected Body end [protected_IDENTIFIER]
1546 -- Block Statement end [block_IDENTIFIER];
1547 -- Subprogram Body end [DESIGNATOR];
1548 -- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
1549 -- Task Body end [task_IDENTIFIER];
1550 -- Accept Statement end [entry_IDENTIFIER]];
1551 -- Entry Body end [entry_IDENTIFIER];
1553 -- If Statement end if;
1554 -- Case Statement end case;
1556 -- Record Definition end record;
1557 -- Enumeration Definition );
1559 -- The End_Label and End_Span fields are used to mark the locations of
1560 -- these lines, and also keep track of the label in the case where a label
1563 -- For the first group above, the End_Label field of the corresponding node
1564 -- is used to point to the label identifier. In the case where there is no
1565 -- label in the source, the parser supplies a dummy identifier (with
1566 -- Comes_From_Source set to False), and the Sloc of this dummy identifier
1567 -- marks the location of the token following the END token.
1569 -- For the second group, the use of End_Label is similar, but the End_Label
1570 -- is found in the N_Handled_Sequence_Of_Statements node. This is done
1571 -- simply because in some cases there is no room in the parent node.
1573 -- For the third group, there is never any label, and instead of using
1574 -- End_Label, we use the End_Span field which gives the location of the
1575 -- token following END, relative to the starting Sloc of the construct,
1576 -- i.e. add Sloc (Node) + End_Span (Node) to get the Sloc of the IF or CASE
1577 -- following the End_Label.
1579 -- The record definition case is handled specially, we treat it as though
1580 -- it required an optional label which is never present, and so the parser
1581 -- always builds a dummy identifier with Comes From Source set False. The
1582 -- reason we do this, rather than using End_Span in this case, is that we
1583 -- want to generate a cross-ref entry for the end of a record, since it
1584 -- represents a scope for name declaration purposes.
1586 -- The enumeration definition case is handled in an exactly similar manner,
1587 -- building a dummy identifier to get a cross-reference.
1589 -- Note: the reason we store the difference as a Uint, instead of storing
1590 -- the Source_Ptr value directly, is that Source_Ptr values cannot be
1591 -- distinguished from other types of values, and we count on all general
1592 -- use fields being self describing. To make things easier for clients,
1593 -- note that we provide function End_Location, and procedure
1594 -- Set_End_Location to allow access to the logical value (which is the
1595 -- Source_Ptr value for the end token).
1597 ---------------------
1598 -- Syntactic Nodes --
1599 ---------------------
1601 ---------------------
1602 -- 2.3 Identifier --
1603 ---------------------
1605 -- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
1606 -- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
1608 -- An IDENTIFIER shall not be a reserved word
1610 -- In the Ada grammar identifiers are the bottom level tokens which have
1611 -- very few semantics. Actual program identifiers are direct names. If
1612 -- we were being 100% honest with the grammar, then we would have a node
1613 -- called N_Direct_Name which would point to an identifier. However,
1614 -- that's too many extra nodes, so we just use the N_Identifier node
1615 -- directly as a direct name, and it contains the expression fields and
1616 -- Entity field that correspond to its use as a direct name. In those
1617 -- few cases where identifiers appear in contexts where they are not
1618 -- direct names (pragmas, pragma argument associations, attribute
1619 -- references and attribute definition clauses), the Chars field of the
1620 -- node contains the Name_Id for the identifier name.
1622 -- Note: in GNAT, a reserved word can be treated as an identifier in two
1623 -- cases. First, an incorrect use of a reserved word as an identifier is
1624 -- diagnosed and then treated as a normal identifier. Second, an
1625 -- attribute designator of the form of a reserved word (access, delta,
1626 -- digits, range) is treated as an identifier.
1628 -- Note: The set of letters that is permitted in an identifier depends
1629 -- on the character set in use. See package Csets for full details.
1632 -- Sloc points to identifier
1633 -- Chars (Name1) contains the Name_Id for the identifier
1634 -- Entity (Node4-Sem)
1635 -- Associated_Node (Node4-Sem)
1636 -- Original_Discriminant (Node2-Sem)
1637 -- Redundant_Use (Flag13-Sem)
1638 -- Has_Private_View (Flag11-Sem) (set in generic units)
1639 -- plus fields for expression
1641 --------------------------
1642 -- 2.4 Numeric Literal --
1643 --------------------------
1645 -- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
1647 ----------------------------
1648 -- 2.4.1 Decimal Literal --
1649 ----------------------------
1651 -- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
1653 -- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
1655 -- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
1657 -- Decimal literals appear in the tree as either integer literal nodes
1658 -- or real literal nodes, depending on whether a period is present.
1660 -- Note: literal nodes appear as a result of direct use of literals
1661 -- in the source program, and also as the result of evaluating
1662 -- expressions at compile time. In the latter case, it is possible
1663 -- to construct real literals that have no syntactic representation
1664 -- using the standard literal format. Such literals are listed by
1665 -- Sprint using the notation [numerator / denominator].
1667 -- Note: the value of an integer literal node created by the front end
1668 -- is never outside the range of values of the base type. However, it
1669 -- can be the case that the value is outside the range of the
1670 -- particular subtype. This happens in the case of integer overflows
1671 -- with checks suppressed.
1673 -- N_Integer_Literal
1674 -- Sloc points to literal
1675 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1676 -- has been constant-folded into its literal value.
1677 -- Intval (Uint3) contains integer value of literal
1678 -- plus fields for expression
1679 -- Print_In_Hex (Flag13-Sem)
1682 -- Sloc points to literal
1683 -- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
1684 -- has been constant-folded into its literal value.
1685 -- Realval (Ureal3) contains real value of literal
1686 -- Corresponding_Integer_Value (Uint4-Sem)
1687 -- Is_Machine_Number (Flag11-Sem)
1688 -- plus fields for expression
1690 --------------------------
1691 -- 2.4.2 Based Literal --
1692 --------------------------
1694 -- BASED_LITERAL ::=
1695 -- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
1699 -- BASED_NUMERAL ::=
1700 -- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
1702 -- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
1704 -- Based literals appear in the tree as either integer literal nodes
1705 -- or real literal nodes, depending on whether a period is present.
1707 ----------------------------
1708 -- 2.5 Character Literal --
1709 ----------------------------
1711 -- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
1713 -- N_Character_Literal
1714 -- Sloc points to literal
1715 -- Chars (Name1) contains the Name_Id for the identifier
1716 -- Char_Literal_Value (Uint2) contains the literal value
1717 -- Entity (Node4-Sem)
1718 -- Associated_Node (Node4-Sem)
1719 -- Has_Private_View (Flag11-Sem) set in generic units.
1720 -- plus fields for expression
1722 -- Note: the Entity field will be missing (set to Empty) for character
1723 -- literals whose type is Standard.Wide_Character or Standard.Character
1724 -- or a type derived from one of these two. In this case the character
1725 -- literal stands for its own coding. The reason we take this irregular
1726 -- short cut is to avoid the need to build lots of junk defining
1727 -- character literal nodes.
1729 -------------------------
1730 -- 2.6 String Literal --
1731 -------------------------
1733 -- STRING LITERAL ::= "{STRING_ELEMENT}"
1735 -- A STRING_ELEMENT is either a pair of quotation marks ("), or a
1736 -- single GRAPHIC_CHARACTER other than a quotation mark.
1739 -- Sloc points to literal
1740 -- Strval (Str3) contains Id of string value
1741 -- Has_Wide_Character (Flag11-Sem)
1742 -- plus fields for expression
1748 -- A COMMENT starts with two adjacent hyphens and extends up to the
1749 -- end of the line. A COMMENT may appear on any line of a program.
1751 -- Comments are skipped by the scanner and do not appear in the tree.
1752 -- It is possible to reconstruct the position of comments with respect
1753 -- to the elements of the tree by using the source position (Sloc)
1754 -- pointers that appear in every tree node.
1760 -- PRAGMA ::= pragma IDENTIFIER
1761 -- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
1763 -- Note that a pragma may appear in the tree anywhere a declaration
1764 -- or a statement may appear, as well as in some other situations
1765 -- which are explicitly documented.
1768 -- Sloc points to PRAGMA
1769 -- Chars (Name1) identifier name from pragma identifier
1770 -- Pragma_Argument_Associations (List2) (set to No_List if none)
1771 -- Debug_Statement (Node3) (set to Empty if not Debug, Assert)
1772 -- Next_Rep_Item (Node4-Sem)
1774 -- Note: we should have a section on what pragmas are passed on to
1775 -- the back end to be processed. This section should note that pragma
1776 -- Psect_Object is always converted to Common_Object, but there are
1777 -- undoubtedly many other similar notes required ???
1779 --------------------------------------
1780 -- 2.8 Pragma Argument Association --
1781 --------------------------------------
1783 -- PRAGMA_ARGUMENT_ASSOCIATION ::=
1784 -- [pragma_argument_IDENTIFIER =>] NAME
1785 -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
1787 -- N_Pragma_Argument_Association
1788 -- Sloc points to first token in association
1789 -- Chars (Name1) (set to No_Name if no pragma argument identifier)
1790 -- Expression (Node3)
1792 ------------------------
1793 -- 2.9 Reserved Word --
1794 ------------------------
1796 -- Reserved words are parsed by the scanner, and returned as the
1797 -- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
1799 ----------------------------
1800 -- 3.1 Basic Declaration --
1801 ----------------------------
1803 -- BASIC_DECLARATION ::=
1804 -- TYPE_DECLARATION | SUBTYPE_DECLARATION
1805 -- | OBJECT_DECLARATION | NUMBER_DECLARATION
1806 -- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
1807 -- | PACKAGE_DECLARATION | RENAMING_DECLARATION
1808 -- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
1809 -- | GENERIC_INSTANTIATION
1811 -- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
1812 -- see further description in section on semantic nodes.
1814 -- Also, in the tree that is constructed, a pragma may appear
1815 -- anywhere that a declaration may appear.
1817 ------------------------------
1818 -- 3.1 Defining Identifier --
1819 ------------------------------
1821 -- DEFINING_IDENTIFIER ::= IDENTIFIER
1823 -- A defining identifier is an entity, which has additional fields
1824 -- depending on the setting of the Ekind field. These additional
1825 -- fields are defined (and access subprograms declared) in package
1828 -- Note: N_Defining_Identifier is an extended node whose fields are
1829 -- deliberate layed out to match the layout of fields in an ordinary
1830 -- N_Identifier node allowing for easy alteration of an identifier
1831 -- node into a defining identifier node. For details, see procedure
1832 -- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
1834 -- N_Defining_Identifier
1835 -- Sloc points to identifier
1836 -- Chars (Name1) contains the Name_Id for the identifier
1837 -- Next_Entity (Node2-Sem)
1838 -- Scope (Node3-Sem)
1839 -- Etype (Node5-Sem)
1841 -----------------------------
1842 -- 3.2.1 Type Declaration --
1843 -----------------------------
1845 -- TYPE_DECLARATION ::=
1846 -- FULL_TYPE_DECLARATION
1847 -- | INCOMPLETE_TYPE_DECLARATION
1848 -- | PRIVATE_TYPE_DECLARATION
1849 -- | PRIVATE_EXTENSION_DECLARATION
1851 ----------------------------------
1852 -- 3.2.1 Full Type Declaration --
1853 ----------------------------------
1855 -- FULL_TYPE_DECLARATION ::=
1856 -- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
1857 -- is TYPE_DEFINITION;
1858 -- | TASK_TYPE_DECLARATION
1859 -- | PROTECTED_TYPE_DECLARATION
1861 -- The full type declaration node is used only for the first case. The
1862 -- second case (concurrent type declaration), is represented directly
1863 -- by a task type declaration or a protected type declaration.
1865 -- N_Full_Type_Declaration
1866 -- Sloc points to TYPE
1867 -- Defining_Identifier (Node1)
1868 -- Discriminant_Specifications (List4) (set to No_List if none)
1869 -- Type_Definition (Node3)
1870 -- Discr_Check_Funcs_Built (Flag11-Sem)
1872 ----------------------------
1873 -- 3.2.1 Type Definition --
1874 ----------------------------
1876 -- TYPE_DEFINITION ::=
1877 -- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
1878 -- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
1879 -- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
1880 -- | DERIVED_TYPE_DEFINITION | INTERFACE_TYPE_DEFINITION
1882 --------------------------------
1883 -- 3.2.2 Subtype Declaration --
1884 --------------------------------
1886 -- SUBTYPE_DECLARATION ::=
1887 -- subtype DEFINING_IDENTIFIER is [NULL_EXCLUSION] SUBTYPE_INDICATION;
1889 -- The subtype indication field is set to Empty for subtypes
1890 -- declared in package Standard (Positive, Natural).
1892 -- N_Subtype_Declaration
1893 -- Sloc points to SUBTYPE
1894 -- Defining_Identifier (Node1)
1895 -- Null_Exclusion_Present (Flag11)
1896 -- Subtype_Indication (Node5)
1897 -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
1898 -- Exception_Junk (Flag7-Sem)
1900 -------------------------------
1901 -- 3.2.2 Subtype Indication --
1902 -------------------------------
1904 -- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
1906 -- Note: if no constraint is present, the subtype indication appears
1907 -- directly in the tree as a subtype mark. The N_Subtype_Indication
1908 -- node is used only if a constraint is present.
1910 -- Note: [For Ada 2005 (AI-231)]: Because Ada 2005 extends this rule
1911 -- with the null-exclusion part (see AI-231), we had to introduce a new
1912 -- attribute in all the parents of subtype_indication nodes to indicate
1913 -- if the null-exclusion is present.
1915 -- Note: the reason that this node has expression fields is that a
1916 -- subtype indication can appear as an operand of a membership test.
1918 -- N_Subtype_Indication
1919 -- Sloc points to first token of subtype mark
1920 -- Subtype_Mark (Node4)
1921 -- Constraint (Node3)
1922 -- Etype (Node5-Sem)
1923 -- Must_Not_Freeze (Flag8-Sem)
1925 -- Note: Etype is a copy of the Etype field of the Subtype_Mark. The
1926 -- reason for this redundancy is so that in a list of array index types,
1927 -- the Etype can be uniformly accessed to determine the subscript type.
1928 -- This means that no Itype is constructed for the actual subtype that
1929 -- is created by the subtype indication. If such an Itype is required,
1930 -- it is constructed in the context in which the indication appears.
1932 -------------------------
1933 -- 3.2.2 Subtype Mark --
1934 -------------------------
1936 -- SUBTYPE_MARK ::= subtype_NAME
1938 -----------------------
1939 -- 3.2.2 Constraint --
1940 -----------------------
1942 -- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
1944 ------------------------------
1945 -- 3.2.2 Scalar Constraint --
1946 ------------------------------
1948 -- SCALAR_CONSTRAINT ::=
1949 -- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
1951 ---------------------------------
1952 -- 3.2.2 Composite Constraint --
1953 ---------------------------------
1955 -- COMPOSITE_CONSTRAINT ::=
1956 -- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
1958 -------------------------------
1959 -- 3.3.1 Object Declaration --
1960 -------------------------------
1962 -- OBJECT_DECLARATION ::=
1963 -- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1964 -- [NULL_EXCLUSION] SUBTYPE_INDICATION [:= EXPRESSION];
1965 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1966 -- ACCESS_DEFINITION [:= EXPRESSION];
1967 -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
1968 -- ARRAY_TYPE_DEFINITION [:= EXPRESSION];
1969 -- | SINGLE_TASK_DECLARATION
1970 -- | SINGLE_PROTECTED_DECLARATION
1972 -- Note: aliased is not permitted in Ada 83 mode
1974 -- The N_Object_Declaration node is only for the first two cases.
1975 -- Single task declaration is handled by P_Task (9.1)
1976 -- Single protected declaration is handled by P_protected (9.5)
1978 -- Although the syntax allows multiple identifiers in the list, the
1979 -- semantics is as though successive declarations were given with
1980 -- identical type definition and expression components. To simplify
1981 -- semantic processing, the parser represents a multiple declaration
1982 -- case as a sequence of single declarations, using the More_Ids and
1983 -- Prev_Ids flags to preserve the original source form as described
1984 -- in the section on "Handling of Defining Identifier Lists".
1986 -- Note: if a range check is required for the initialization
1987 -- expression then the Do_Range_Check flag is set in the Expression,
1988 -- with the check being done against the type given by the object
1989 -- definition, which is also the Etype of the defining identifier.
1991 -- Note: the contents of the Expression field must be ignored (i.e.
1992 -- treated as though it were Empty) if No_Initialization is set True.
1994 -- Note: the back end places some restrictions on the form of the
1995 -- Expression field. If the object being declared is Atomic, then
1996 -- the Expression may not have the form of an aggregate (since this
1997 -- might cause the back end to generate separate assignments). It
1998 -- also cannot be a reference to an object marked as a true constant
1999 -- (Is_True_Constant flag set), where the object is itself initalized
2000 -- with an aggregate. If necessary the front end must generate an
2001 -- extra temporary (with Is_True_Constant set False), and initialize
2002 -- this temporary as required (the temporary itself is not atomic).
2004 -- Note: there is not node kind for object definition. Instead, the
2005 -- corresponding field holds a subtype indication, an array type
2006 -- definition, or (Ada 2005, AI-406) an access definition.
2008 -- N_Object_Declaration
2009 -- Sloc points to first identifier
2010 -- Defining_Identifier (Node1)
2011 -- Aliased_Present (Flag4) set if ALIASED appears
2012 -- Constant_Present (Flag17) set if CONSTANT appears
2013 -- Null_Exclusion_Present (Flag11)
2014 -- Object_Definition (Node4) subtype indic./array type def./ access def.
2015 -- Expression (Node3) (set to Empty if not present)
2016 -- Handler_List_Entry (Node2-Sem)
2017 -- Corresponding_Generic_Association (Node5-Sem)
2018 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2019 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2020 -- No_Initialization (Flag13-Sem)
2021 -- Assignment_OK (Flag15-Sem)
2022 -- Exception_Junk (Flag7-Sem)
2023 -- Delay_Finalize_Attach (Flag14-Sem)
2024 -- Is_Subprogram_Descriptor (Flag16-Sem)
2026 -------------------------------------
2027 -- 3.3.1 Defining Identifier List --
2028 -------------------------------------
2030 -- DEFINING_IDENTIFIER_LIST ::=
2031 -- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
2033 -------------------------------
2034 -- 3.3.2 Number Declaration --
2035 -------------------------------
2037 -- NUMBER_DECLARATION ::=
2038 -- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
2040 -- Although the syntax allows multiple identifiers in the list, the
2041 -- semantics is as though successive declarations were given with
2042 -- identical expressions. To simplify semantic processing, the parser
2043 -- represents a multiple declaration case as a sequence of single
2044 -- declarations, using the More_Ids and Prev_Ids flags to preserve
2045 -- the original source form as described in the section on "Handling
2046 -- of Defining Identifier Lists".
2048 -- N_Number_Declaration
2049 -- Sloc points to first identifier
2050 -- Defining_Identifier (Node1)
2051 -- Expression (Node3)
2052 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2053 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2055 ----------------------------------
2056 -- 3.4 Derived Type Definition --
2057 ----------------------------------
2059 -- DERIVED_TYPE_DEFINITION ::=
2060 -- [abstract] [limited] new [NULL_EXCLUSION] parent_SUBTYPE_INDICATION
2061 -- [[and INTERFACE_LIST] RECORD_EXTENSION_PART]
2063 -- Note: ABSTRACT, LIMITED and record extension part are not permitted
2066 -- Note: a record extension part is required if ABSTRACT is present
2068 -- N_Derived_Type_Definition
2069 -- Sloc points to NEW
2070 -- Abstract_Present (Flag4)
2071 -- Null_Exclusion_Present (Flag11) (set to False if not present)
2072 -- Subtype_Indication (Node5)
2073 -- Record_Extension_Part (Node3) (set to Empty if not present)
2074 -- Limited_Present (Flag17)
2075 -- Task_Present (Flag5) set in task interfaces
2076 -- Protected_Present (Flag6) set in protected interfaces
2077 -- Synchronized_Present (Flag7) set in interfaces
2078 -- Interface_List (List2) (set to No_List if none)
2079 -- Interface_Present (Flag16) set in abstract interfaces
2081 -- Note: Task_Present, Protected_Present, Synchronized_Present,
2082 -- Interface_List, and Interface_Present are used for abstract
2083 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2085 ---------------------------
2086 -- 3.5 Range Constraint --
2087 ---------------------------
2089 -- RANGE_CONSTRAINT ::= range RANGE
2091 -- N_Range_Constraint
2092 -- Sloc points to RANGE
2093 -- Range_Expression (Node4)
2100 -- RANGE_ATTRIBUTE_REFERENCE
2101 -- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
2103 -- Note: the case of a range given as a range attribute reference
2104 -- appears directly in the tree as an attribute reference.
2106 -- Note: the field name for a reference to a range is Range_Expression
2107 -- rather than Range, because range is a reserved keyword in Ada!
2109 -- Note: the reason that this node has expression fields is that a
2110 -- range can appear as an operand of a membership test. The Etype
2111 -- field is the type of the range (we do NOT construct an implicit
2112 -- subtype to represent the range exactly).
2115 -- Sloc points to ..
2116 -- Low_Bound (Node1)
2117 -- High_Bound (Node2)
2118 -- Includes_Infinities (Flag11)
2119 -- plus fields for expression
2121 -- Note: if the range appears in a context, such as a subtype
2122 -- declaration, where range checks are required on one or both of
2123 -- the expression fields, then type conversion nodes are inserted
2124 -- to represent the required checks.
2126 ----------------------------------------
2127 -- 3.5.1 Enumeration Type Definition --
2128 ----------------------------------------
2130 -- ENUMERATION_TYPE_DEFINITION ::=
2131 -- (ENUMERATION_LITERAL_SPECIFICATION
2132 -- {, ENUMERATION_LITERAL_SPECIFICATION})
2134 -- Note: the Literals field in the node described below is null for
2135 -- the case of the standard types CHARACTER and WIDE_CHARACTER, for
2136 -- which special processing handles these types as special cases.
2138 -- N_Enumeration_Type_Definition
2139 -- Sloc points to left parenthesis
2140 -- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
2141 -- End_Label (Node4) (set to Empty if internally generated record)
2143 ----------------------------------------------
2144 -- 3.5.1 Enumeration Literal Specification --
2145 ----------------------------------------------
2147 -- ENUMERATION_LITERAL_SPECIFICATION ::=
2148 -- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
2150 ---------------------------------------
2151 -- 3.5.1 Defining Character Literal --
2152 ---------------------------------------
2154 -- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
2156 -- A defining character literal is an entity, which has additional
2157 -- fields depending on the setting of the Ekind field. These
2158 -- additional fields are defined (and access subprograms declared)
2159 -- in package Einfo.
2161 -- Note: N_Defining_Character_Literal is an extended node whose fields
2162 -- are deliberate layed out to match the layout of fields in an ordinary
2163 -- N_Character_Literal node allowing for easy alteration of a character
2164 -- literal node into a defining character literal node. For details, see
2165 -- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
2167 -- N_Defining_Character_Literal
2168 -- Sloc points to literal
2169 -- Chars (Name1) contains the Name_Id for the identifier
2170 -- Next_Entity (Node2-Sem)
2171 -- Scope (Node3-Sem)
2172 -- Etype (Node5-Sem)
2174 ------------------------------------
2175 -- 3.5.4 Integer Type Definition --
2176 ------------------------------------
2178 -- Note: there is an error in this rule in the latest version of the
2179 -- grammar, so we have retained the old rule pending clarification.
2181 -- INTEGER_TYPE_DEFINITION ::=
2182 -- SIGNED_INTEGER_TYPE_DEFINITION
2183 -- | MODULAR_TYPE_DEFINITION
2185 -------------------------------------------
2186 -- 3.5.4 Signed Integer Type Definition --
2187 -------------------------------------------
2189 -- SIGNED_INTEGER_TYPE_DEFINITION ::=
2190 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2192 -- Note: the Low_Bound and High_Bound fields are set to Empty
2193 -- for integer types defined in package Standard.
2195 -- N_Signed_Integer_Type_Definition
2196 -- Sloc points to RANGE
2197 -- Low_Bound (Node1)
2198 -- High_Bound (Node2)
2200 ------------------------------------
2201 -- 3.5.4 Modular Type Definition --
2202 ------------------------------------
2204 -- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
2206 -- N_Modular_Type_Definition
2207 -- Sloc points to MOD
2208 -- Expression (Node3)
2210 ---------------------------------
2211 -- 3.5.6 Real Type Definition --
2212 ---------------------------------
2214 -- REAL_TYPE_DEFINITION ::=
2215 -- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
2217 --------------------------------------
2218 -- 3.5.7 Floating Point Definition --
2219 --------------------------------------
2221 -- FLOATING_POINT_DEFINITION ::=
2222 -- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
2224 -- Note: The Digits_Expression and Real_Range_Specifications fields
2225 -- are set to Empty for floating-point types declared in Standard.
2227 -- N_Floating_Point_Definition
2228 -- Sloc points to DIGITS
2229 -- Digits_Expression (Node2)
2230 -- Real_Range_Specification (Node4) (set to Empty if not present)
2232 -------------------------------------
2233 -- 3.5.7 Real Range Specification --
2234 -------------------------------------
2236 -- REAL_RANGE_SPECIFICATION ::=
2237 -- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
2239 -- N_Real_Range_Specification
2240 -- Sloc points to RANGE
2241 -- Low_Bound (Node1)
2242 -- High_Bound (Node2)
2244 -----------------------------------
2245 -- 3.5.9 Fixed Point Definition --
2246 -----------------------------------
2248 -- FIXED_POINT_DEFINITION ::=
2249 -- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
2251 --------------------------------------------
2252 -- 3.5.9 Ordinary Fixed Point Definition --
2253 --------------------------------------------
2255 -- ORDINARY_FIXED_POINT_DEFINITION ::=
2256 -- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
2258 -- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2260 -- N_Ordinary_Fixed_Point_Definition
2261 -- Sloc points to DELTA
2262 -- Delta_Expression (Node3)
2263 -- Real_Range_Specification (Node4)
2265 -------------------------------------------
2266 -- 3.5.9 Decimal Fixed Point Definition --
2267 -------------------------------------------
2269 -- DECIMAL_FIXED_POINT_DEFINITION ::=
2270 -- delta static_EXPRESSION
2271 -- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
2273 -- Note: decimal types are not permitted in Ada 83 mode
2275 -- N_Decimal_Fixed_Point_Definition
2276 -- Sloc points to DELTA
2277 -- Delta_Expression (Node3)
2278 -- Digits_Expression (Node2)
2279 -- Real_Range_Specification (Node4) (set to Empty if not present)
2281 ------------------------------
2282 -- 3.5.9 Digits Constraint --
2283 ------------------------------
2285 -- DIGITS_CONSTRAINT ::=
2286 -- digits static_EXPRESSION [RANGE_CONSTRAINT]
2288 -- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
2289 -- Note: in Ada 95, reduced accuracy subtypes are obsolescent
2291 -- N_Digits_Constraint
2292 -- Sloc points to DIGITS
2293 -- Digits_Expression (Node2)
2294 -- Range_Constraint (Node4) (set to Empty if not present)
2296 --------------------------------
2297 -- 3.6 Array Type Definition --
2298 --------------------------------
2300 -- ARRAY_TYPE_DEFINITION ::=
2301 -- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
2303 -----------------------------------------
2304 -- 3.6 Unconstrained Array Definition --
2305 -----------------------------------------
2307 -- UNCONSTRAINED_ARRAY_DEFINITION ::=
2308 -- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
2309 -- COMPONENT_DEFINITION
2311 -- Note: dimensionality of array is indicated by number of entries in
2312 -- the Subtype_Marks list, which has one entry for each dimension.
2314 -- N_Unconstrained_Array_Definition
2315 -- Sloc points to ARRAY
2316 -- Subtype_Marks (List2)
2317 -- Component_Definition (Node4)
2319 -----------------------------------
2320 -- 3.6 Index Subtype Definition --
2321 -----------------------------------
2323 -- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
2325 -- There is no explicit node in the tree for an index subtype
2326 -- definition since the N_Unconstrained_Array_Definition node
2327 -- incorporates the type marks which appear in this context.
2329 ---------------------------------------
2330 -- 3.6 Constrained Array Definition --
2331 ---------------------------------------
2333 -- CONSTRAINED_ARRAY_DEFINITION ::=
2334 -- array (DISCRETE_SUBTYPE_DEFINITION
2335 -- {, DISCRETE_SUBTYPE_DEFINITION})
2336 -- of COMPONENT_DEFINITION
2338 -- Note: dimensionality of array is indicated by number of entries
2339 -- in the Discrete_Subtype_Definitions list, which has one entry
2340 -- for each dimension.
2342 -- N_Constrained_Array_Definition
2343 -- Sloc points to ARRAY
2344 -- Discrete_Subtype_Definitions (List2)
2345 -- Component_Definition (Node4)
2347 --------------------------------------
2348 -- 3.6 Discrete Subtype Definition --
2349 --------------------------------------
2351 -- DISCRETE_SUBTYPE_DEFINITION ::=
2352 -- discrete_SUBTYPE_INDICATION | RANGE
2354 -------------------------------
2355 -- 3.6 Component Definition --
2356 -------------------------------
2358 -- COMPONENT_DEFINITION ::=
2359 -- [aliased] [NULL_EXCLUSION] SUBTYPE_INDICATION | ACCESS_DEFINITION
2361 -- Note: although the syntax does not permit a component definition to
2362 -- be an anonymous array (and the parser will diagnose such an attempt
2363 -- with an appropriate message), it is possible for anonymous arrays
2364 -- to appear as component definitions. The semantics and back end handle
2365 -- this case properly, and the expander in fact generates such cases.
2366 -- Access_Definition is an optional field that gives support to
2367 -- Ada 2005 (AI-230). The parser generates nodes that have either the
2368 -- Subtype_Indication field or else the Access_Definition field.
2370 -- N_Component_Definition
2371 -- Sloc points to ALIASED, ACCESS or to first token of subtype mark
2372 -- Aliased_Present (Flag4)
2373 -- Null_Exclusion_Present (Flag11)
2374 -- Subtype_Indication (Node5) (set to Empty if not present)
2375 -- Access_Definition (Node3) (set to Empty if not present)
2377 -----------------------------
2378 -- 3.6.1 Index Constraint --
2379 -----------------------------
2381 -- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
2383 -- It is not in general possible to distinguish between discriminant
2384 -- constraints and index constraints at parse time, since a simple
2385 -- name could be either the subtype mark of a discrete range, or an
2386 -- expression in a discriminant association with no name. Either
2387 -- entry appears simply as the name, and the semantic parse must
2388 -- distinguish between the two cases. Thus we use a common tree
2389 -- node format for both of these constraint types.
2391 -- See Discriminant_Constraint for format of node
2393 ---------------------------
2394 -- 3.6.1 Discrete Range --
2395 ---------------------------
2397 -- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
2399 ----------------------------
2400 -- 3.7 Discriminant Part --
2401 ----------------------------
2403 -- DISCRIMINANT_PART ::=
2404 -- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
2406 ------------------------------------
2407 -- 3.7 Unknown Discriminant Part --
2408 ------------------------------------
2410 -- UNKNOWN_DISCRIMINANT_PART ::= (<>)
2412 -- Note: unknown discriminant parts are not permitted in Ada 83 mode
2414 -- There is no explicit node in the tree for an unknown discriminant
2415 -- part. Instead the Unknown_Discriminants_Present flag is set in the
2418 ----------------------------------
2419 -- 3.7 Known Discriminant Part --
2420 ----------------------------------
2422 -- KNOWN_DISCRIMINANT_PART ::=
2423 -- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
2425 -------------------------------------
2426 -- 3.7 Discriminant Specification --
2427 -------------------------------------
2429 -- DISCRIMINANT_SPECIFICATION ::=
2430 -- DEFINING_IDENTIFIER_LIST : [NULL_EXCLUSION] SUBTYPE_MARK
2431 -- [:= DEFAULT_EXPRESSION]
2432 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
2433 -- [:= DEFAULT_EXPRESSION]
2435 -- Although the syntax allows multiple identifiers in the list, the
2436 -- semantics is as though successive specifications were given with
2437 -- identical type definition and expression components. To simplify
2438 -- semantic processing, the parser represents a multiple declaration
2439 -- case as a sequence of single specifications, using the More_Ids and
2440 -- Prev_Ids flags to preserve the original source form as described
2441 -- in the section on "Handling of Defining Identifier Lists".
2443 -- N_Discriminant_Specification
2444 -- Sloc points to first identifier
2445 -- Defining_Identifier (Node1)
2446 -- Null_Exclusion_Present (Flag11)
2447 -- Discriminant_Type (Node5) subtype mark or access parameter definition
2448 -- Expression (Node3) (set to Empty if no default expression)
2449 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2450 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2452 -----------------------------
2453 -- 3.7 Default Expression --
2454 -----------------------------
2456 -- DEFAULT_EXPRESSION ::= EXPRESSION
2458 ------------------------------------
2459 -- 3.7.1 Discriminant Constraint --
2460 ------------------------------------
2462 -- DISCRIMINANT_CONSTRAINT ::=
2463 -- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
2465 -- It is not in general possible to distinguish between discriminant
2466 -- constraints and index constraints at parse time, since a simple
2467 -- name could be either the subtype mark of a discrete range, or an
2468 -- expression in a discriminant association with no name. Either
2469 -- entry appears simply as the name, and the semantic parse must
2470 -- distinguish between the two cases. Thus we use a common tree
2471 -- node format for both of these constraint types.
2473 -- N_Index_Or_Discriminant_Constraint
2474 -- Sloc points to left paren
2475 -- Constraints (List1) points to list of discrete ranges or
2476 -- discriminant associations
2478 -------------------------------------
2479 -- 3.7.1 Discriminant Association --
2480 -------------------------------------
2482 -- DISCRIMINANT_ASSOCIATION ::=
2483 -- [discriminant_SELECTOR_NAME
2484 -- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
2486 -- Note: a discriminant association that has no selector name list
2487 -- appears directly as an expression in the tree.
2489 -- N_Discriminant_Association
2490 -- Sloc points to first token of discriminant association
2491 -- Selector_Names (List1) (always non-empty, since if no selector
2492 -- names are present, this node is not used, see comment above)
2493 -- Expression (Node3)
2495 ---------------------------------
2496 -- 3.8 Record Type Definition --
2497 ---------------------------------
2499 -- RECORD_TYPE_DEFINITION ::=
2500 -- [[abstract] tagged] [limited] RECORD_DEFINITION
2502 -- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
2504 -- There is no explicit node in the tree for a record type definition.
2505 -- Instead the flags for Tagged_Present and Limited_Present appear in
2506 -- the N_Record_Definition node for a record definition appearing in
2507 -- the context of a record type definition.
2509 ----------------------------
2510 -- 3.8 Record Definition --
2511 ----------------------------
2513 -- RECORD_DEFINITION ::=
2519 -- Note: the Abstract_Present, Tagged_Present and Limited_Present
2520 -- flags appear only for a record definition appearing in a record
2523 -- Note: the NULL RECORD case is not permitted in Ada 83
2525 -- N_Record_Definition
2526 -- Sloc points to RECORD or NULL
2527 -- End_Label (Node4) (set to Empty if internally generated record)
2528 -- Abstract_Present (Flag4)
2529 -- Tagged_Present (Flag15)
2530 -- Limited_Present (Flag17)
2531 -- Component_List (Node1) empty in null record case
2532 -- Null_Present (Flag13) set in null record case
2533 -- Task_Present (Flag5) set in task interfaces
2534 -- Protected_Present (Flag6) set in protected interfaces
2535 -- Synchronized_Present (Flag7) set in interfaces
2536 -- Interface_Present (Flag16) set in abstract interfaces
2537 -- Interface_List (List2) (set to No_List if none)
2539 -- Note: Task_Present, Protected_Present, Synchronized _Present,
2540 -- Interface_List and Interface_Present are used for abstract
2541 -- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
2543 -------------------------
2544 -- 3.8 Component List --
2545 -------------------------
2547 -- COMPONENT_LIST ::=
2548 -- COMPONENT_ITEM {COMPONENT_ITEM}
2549 -- | {COMPONENT_ITEM} VARIANT_PART
2553 -- Sloc points to first token of component list
2554 -- Component_Items (List3)
2555 -- Variant_Part (Node4) (set to Empty if no variant part)
2556 -- Null_Present (Flag13)
2558 -------------------------
2559 -- 3.8 Component Item --
2560 -------------------------
2562 -- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
2564 -- Note: A component item can also be a pragma, and in the tree
2565 -- that is obtained after semantic processing, a component item
2566 -- can be an N_Null node resulting from a non-recognized pragma.
2568 --------------------------------
2569 -- 3.8 Component Declaration --
2570 --------------------------------
2572 -- COMPONENT_DECLARATION ::=
2573 -- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
2574 -- [:= DEFAULT_EXPRESSION]
2576 -- Note: although the syntax does not permit a component definition to
2577 -- be an anonymous array (and the parser will diagnose such an attempt
2578 -- with an appropriate message), it is possible for anonymous arrays
2579 -- to appear as component definitions. The semantics and back end handle
2580 -- this case properly, and the expander in fact generates such cases.
2582 -- Although the syntax allows multiple identifiers in the list, the
2583 -- semantics is as though successive declarations were given with the
2584 -- same component definition and expression components. To simplify
2585 -- semantic processing, the parser represents a multiple declaration
2586 -- case as a sequence of single declarations, using the More_Ids and
2587 -- Prev_Ids flags to preserve the original source form as described
2588 -- in the section on "Handling of Defining Identifier Lists".
2590 -- N_Component_Declaration
2591 -- Sloc points to first identifier
2592 -- Defining_Identifier (Node1)
2593 -- Component_Definition (Node4)
2594 -- Expression (Node3) (set to Empty if no default expression)
2595 -- More_Ids (Flag5) (set to False if no more identifiers in list)
2596 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
2598 -------------------------
2599 -- 3.8.1 Variant Part --
2600 -------------------------
2603 -- case discriminant_DIRECT_NAME is
2608 -- Note: the variants list can contain pragmas as well as variants.
2609 -- In a properly formed program there is at least one variant.
2612 -- Sloc points to CASE
2616 --------------------
2618 --------------------
2621 -- when DISCRETE_CHOICE_LIST =>
2625 -- Sloc points to WHEN
2626 -- Discrete_Choices (List4)
2627 -- Component_List (Node1)
2628 -- Enclosing_Variant (Node2-Sem)
2629 -- Present_Expr (Uint3-Sem)
2630 -- Dcheck_Function (Node5-Sem)
2632 ---------------------------------
2633 -- 3.8.1 Discrete Choice List --
2634 ---------------------------------
2636 -- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
2638 ----------------------------
2639 -- 3.8.1 Discrete Choice --
2640 ----------------------------
2642 -- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
2644 -- Note: in Ada 83 mode, the expression must be a simple expression
2646 -- The only choice that appears explicitly is the OTHERS choice, as
2647 -- defined here. Other cases of discrete choice (expression and
2648 -- discrete range) appear directly. This production is also used
2649 -- for the OTHERS possibility of an exception choice.
2651 -- Note: in accordance with the syntax, the parser does not check that
2652 -- OTHERS appears at the end on its own in a choice list context. This
2653 -- is a semantic check.
2656 -- Sloc points to OTHERS
2657 -- Others_Discrete_Choices (List1-Sem)
2658 -- All_Others (Flag11-Sem)
2660 ----------------------------------
2661 -- 3.9.1 Record Extension Part --
2662 ----------------------------------
2664 -- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
2666 -- Note: record extension parts are not permitted in Ada 83 mode
2668 --------------------------------------
2669 -- 3.9.4 Interface Type Definition --
2670 --------------------------------------
2672 -- INTERFACE_TYPE_DEFINITION ::=
2673 -- [limited | task | protected | synchronized]
2674 -- interface [interface_list]
2676 -- Note: Interfaces are implemented with N_Record_Definition and
2677 -- N_Derived_Type_Definition nodes because most of the support
2678 -- for the analysis of abstract types has been reused to
2679 -- analyze abstract interfaces.
2681 ----------------------------------
2682 -- 3.10 Access Type Definition --
2683 ----------------------------------
2685 -- ACCESS_TYPE_DEFINITION ::=
2686 -- ACCESS_TO_OBJECT_DEFINITION
2687 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
2689 --------------------------
2690 -- 3.10 Null Exclusion --
2691 --------------------------
2693 -- NULL_EXCLUSION ::= not null
2695 ---------------------------------------
2696 -- 3.10 Access To Object Definition --
2697 ---------------------------------------
2699 -- ACCESS_TO_OBJECT_DEFINITION ::=
2700 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER]
2701 -- SUBTYPE_INDICATION
2703 -- N_Access_To_Object_Definition
2704 -- Sloc points to ACCESS
2705 -- All_Present (Flag15)
2706 -- Null_Exclusion_Present (Flag11)
2707 -- Subtype_Indication (Node5)
2708 -- Constant_Present (Flag17)
2710 -----------------------------------
2711 -- 3.10 General Access Modifier --
2712 -----------------------------------
2714 -- GENERAL_ACCESS_MODIFIER ::= all | constant
2716 -- Note: general access modifiers are not permitted in Ada 83 mode
2718 -- There is no explicit node in the tree for general access modifier.
2719 -- Instead the All_Present or Constant_Present flags are set in the
2722 -------------------------------------------
2723 -- 3.10 Access To Subprogram Definition --
2724 -------------------------------------------
2726 -- ACCESS_TO_SUBPROGRAM_DEFINITION
2727 -- [NULL_EXCLUSION] access [protected] procedure PARAMETER_PROFILE
2728 -- | [NULL_EXCLUSION] access [protected] function
2729 -- PARAMETER_AND_RESULT_PROFILE
2731 -- Note: access to subprograms are not permitted in Ada 83 mode
2733 -- N_Access_Function_Definition
2734 -- Sloc points to ACCESS
2735 -- Null_Exclusion_Present (Flag11)
2736 -- Protected_Present (Flag6)
2737 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2738 -- Result_Definition (Node4) result subtype (subtype mark or access def)
2740 -- N_Access_Procedure_Definition
2741 -- Sloc points to ACCESS
2742 -- Null_Exclusion_Present (Flag11)
2743 -- Protected_Present (Flag6)
2744 -- Parameter_Specifications (List3) (set to No_List if no formal part)
2746 -----------------------------
2747 -- 3.10 Access Definition --
2748 -----------------------------
2750 -- ACCESS_DEFINITION ::=
2751 -- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER] SUBTYPE_MARK
2752 -- | ACCESS_TO_SUBPROGRAM_DEFINITION
2754 -- Note: access to subprograms are an Ada 2005 (AI-254) extension
2756 -- N_Access_Definition
2757 -- Sloc points to ACCESS
2758 -- Null_Exclusion_Present (Flag11)
2759 -- All_Present (Flag15)
2760 -- Constant_Present (Flag17)
2761 -- Subtype_Mark (Node4)
2762 -- Access_To_Subprogram_Definition (Node3) (set to Empty if not present)
2764 -----------------------------------------
2765 -- 3.10.1 Incomplete Type Declaration --
2766 -----------------------------------------
2768 -- INCOMPLETE_TYPE_DECLARATION ::=
2769 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [IS TAGGED];
2771 -- N_Incomplete_Type_Declaration
2772 -- Sloc points to TYPE
2773 -- Defining_Identifier (Node1)
2774 -- Discriminant_Specifications (List4) (set to No_List if no
2775 -- discriminant part, or if the discriminant part is an
2776 -- unknown discriminant part)
2777 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
2778 -- Tagged_Present (Flag15)
2780 ----------------------------
2781 -- 3.11 Declarative Part --
2782 ----------------------------
2784 -- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
2786 -- Note: although the parser enforces the syntactic requirement that
2787 -- a declarative part can contain only declarations, the semantic
2788 -- processing may add statements to the list of actions in a
2789 -- declarative part, so the code generator should be prepared
2790 -- to accept a statement in this position.
2792 ----------------------------
2793 -- 3.11 Declarative Item --
2794 ----------------------------
2796 -- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
2798 ----------------------------------
2799 -- 3.11 Basic Declarative Item --
2800 ----------------------------------
2802 -- BASIC_DECLARATIVE_ITEM ::=
2803 -- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
2809 -- BODY ::= PROPER_BODY | BODY_STUB
2811 -----------------------
2812 -- 3.11 Proper Body --
2813 -----------------------
2816 -- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
2823 -- DIRECT_NAME | EXPLICIT_DEREFERENCE
2824 -- | INDEXED_COMPONENT | SLICE
2825 -- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
2826 -- | TYPE_CONVERSION | FUNCTION_CALL
2827 -- | CHARACTER_LITERAL
2829 ----------------------
2830 -- 4.1 Direct Name --
2831 ----------------------
2833 -- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
2839 -- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
2841 -------------------------------
2842 -- 4.1 Explicit Dereference --
2843 -------------------------------
2845 -- EXPLICIT_DEREFERENCE ::= NAME . all
2847 -- N_Explicit_Dereference
2848 -- Sloc points to ALL
2850 -- Actual_Designated_Subtype (Node2-Sem)
2851 -- plus fields for expression
2853 -------------------------------
2854 -- 4.1 Implicit Dereference --
2855 -------------------------------
2857 -- IMPLICIT_DEREFERENCE ::= NAME
2859 ------------------------------
2860 -- 4.1.1 Indexed Component --
2861 ------------------------------
2863 -- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
2865 -- Note: the parser may generate this node in some situations where it
2866 -- should be a function call. The semantic pass must correct this
2867 -- misidentification (which is inevitable at the parser level).
2869 -- N_Indexed_Component
2870 -- Sloc contains a copy of the Sloc value of the Prefix
2872 -- Expressions (List1)
2873 -- plus fields for expression
2875 -- Note: if any of the subscripts requires a range check, then the
2876 -- Do_Range_Check flag is set on the corresponding expression, with
2877 -- the index type being determined from the type of the Prefix, which
2878 -- references the array being indexed.
2880 -- Note: in a fully analyzed and expanded indexed component node, and
2881 -- hence in any such node that gigi sees, if the prefix is an access
2882 -- type, then an explicit dereference operation has been inserted.
2888 -- SLICE ::= PREFIX (DISCRETE_RANGE)
2890 -- Note: an implicit subtype is created to describe the resulting
2891 -- type, so that the bounds of this type are the bounds of the slice.
2894 -- Sloc points to first token of prefix
2896 -- Discrete_Range (Node4)
2897 -- plus fields for expression
2899 -------------------------------
2900 -- 4.1.3 Selected Component --
2901 -------------------------------
2903 -- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
2905 -- Note: selected components that are semantically expanded names get
2906 -- changed during semantic processing into the separate N_Expanded_Name
2907 -- node. See description of this node in the section on semantic nodes.
2909 -- N_Selected_Component
2910 -- Sloc points to period
2912 -- Selector_Name (Node2)
2913 -- Associated_Node (Node4-Sem)
2914 -- Do_Discriminant_Check (Flag13-Sem)
2915 -- Is_In_Discriminant_Check (Flag11-Sem)
2916 -- plus fields for expression
2918 --------------------------
2919 -- 4.1.3 Selector Name --
2920 --------------------------
2922 -- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
2924 --------------------------------
2925 -- 4.1.4 Attribute Reference --
2926 --------------------------------
2928 -- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
2930 -- Note: the syntax is quite ambiguous at this point. Consider:
2932 -- A'Length (X) X is part of the attribute designator
2933 -- A'Pos (X) X is an explicit actual parameter of function A'Pos
2934 -- A'Class (X) X is the expression of a type conversion
2936 -- It would be possible for the parser to distinguish these cases
2937 -- by looking at the attribute identifier. However, that would mean
2938 -- more work in introducing new implementation defined attributes,
2939 -- and also it would mean that special processing for attributes
2940 -- would be scattered around, instead of being centralized in the
2941 -- semantic routine that handles an N_Attribute_Reference node.
2942 -- Consequently, the parser in all the above cases stores the
2943 -- expression (X in these examples) as a single element list in
2944 -- in the Expressions field of the N_Attribute_Reference node.
2946 -- Similarly, for attributes like Max which take two arguments,
2947 -- we store the two arguments as a two element list in the
2948 -- Expressions field. Of course it is clear at parse time that
2949 -- this case is really a function call with an attribute as the
2950 -- prefix, but it turns out to be convenient to handle the two
2951 -- argument case in a similar manner to the one argument case,
2952 -- and indeed in general the parser will accept any number of
2953 -- expressions in this position and store them as a list in the
2954 -- attribute reference node. This allows for future addition of
2955 -- attributes that take more than two arguments.
2957 -- Note: named associates are not permitted in function calls where
2958 -- the function is an attribute (see RM 6.4(3)) so it is legitimate
2959 -- to skip the normal subprogram argument processing.
2961 -- Note: for the attributes whose designators are technically keywords,
2962 -- i.e. digits, access, delta, range, the Attribute_Name field contains
2963 -- the corresponding name, even though no identifier is involved.
2965 -- Note: the generated code may contain stream attributes applied to
2966 -- limited types for which no stream routines exist officially. In such
2967 -- case, the result is to use the stream attribute for the underlying
2968 -- full type, or in the case of a protected type, the components
2969 -- (including any disriminants) are merely streamed in order.
2971 -- See Exp_Attr for a complete description of which attributes are
2972 -- passed onto Gigi, and which are handled entirely by the front end.
2974 -- Gigi restriction: For the Pos attribute, the prefix cannot be
2975 -- a non-standard enumeration type or a nonzero/zero semantics
2976 -- boolean type, so the value is simply the stored representation.
2978 -- Gigi requirement: For the Mechanism_Code attribute, if the prefix
2979 -- references a subprogram that is a renaming, then the front end must
2980 -- rewrite the attribute to refer directly to the renamed entity.
2982 -- Note: In generated code, the Address and Unrestricted_Access
2983 -- attributes can be applied to any expression, and the meaning is
2984 -- to create an object containing the value (the object is in the
2985 -- current stack frame), and pass the address of this value. If the
2986 -- Must_Be_Byte_Aligned flag is set, then the object whose address
2987 -- is taken must be on a byte (storage unit) boundary, and if it is
2988 -- not (or may not be), then the generated code must create a copy
2989 -- that is byte aligned, and pass the address of this copy.
2991 -- N_Attribute_Reference
2992 -- Sloc points to apostrophe
2994 -- Attribute_Name (Name2) identifier name from attribute designator
2995 -- Expressions (List1) (set to No_List if no associated expressions)
2996 -- Entity (Node4-Sem) used if the attribute yields a type
2997 -- Associated_Node (Node4-Sem)
2998 -- Do_Overflow_Check (Flag17-Sem)
2999 -- Redundant_Use (Flag13-Sem)
3000 -- Must_Be_Byte_Aligned (Flag14)
3001 -- plus fields for expression
3003 ---------------------------------
3004 -- 4.1.4 Attribute Designator --
3005 ---------------------------------
3007 -- ATTRIBUTE_DESIGNATOR ::=
3008 -- IDENTIFIER [(static_EXPRESSION)]
3009 -- | access | delta | digits
3011 -- There is no explicit node in the tree for an attribute designator.
3012 -- Instead the Attribute_Name and Expressions fields of the parent
3013 -- node (N_Attribute_Reference node) hold the information.
3015 -- Note: if ACCESS, DELTA or DIGITS appears in an attribute
3016 -- designator, then they are treated as identifiers internally
3017 -- rather than the keywords of the same name.
3019 --------------------------------------
3020 -- 4.1.4 Range Attribute Reference --
3021 --------------------------------------
3023 -- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
3025 -- A range attribute reference is represented in the tree using the
3026 -- normal N_Attribute_Reference node.
3028 ---------------------------------------
3029 -- 4.1.4 Range Attribute Designator --
3030 ---------------------------------------
3032 -- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
3034 -- A range attribute designator is represented in the tree using the
3035 -- normal N_Attribute_Reference node.
3037 --------------------
3039 --------------------
3042 -- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
3044 -----------------------------
3045 -- 4.3.1 Record Aggregate --
3046 -----------------------------
3048 -- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
3051 -- Sloc points to left parenthesis
3052 -- Expressions (List1) (set to No_List if none or null record case)
3053 -- Component_Associations (List2) (set to No_List if none)
3054 -- Null_Record_Present (Flag17)
3055 -- Aggregate_Bounds (Node3-Sem)
3056 -- Associated_Node (Node4-Sem)
3057 -- Static_Processing_OK (Flag4-Sem)
3058 -- Compile_Time_Known_Aggregate (Flag18-Sem)
3059 -- Expansion_Delayed (Flag11-Sem)
3060 -- plus fields for expression
3062 -- Note: this structure is used for both record and array aggregates
3063 -- since the two cases are not separable by the parser. The parser
3064 -- makes no attempt to enforce consistency here, so it is up to the
3065 -- semantic phase to make sure that the aggregate is consistent (i.e.
3066 -- that it is not a "half-and-half" case that mixes record and array
3067 -- syntax. In particular, for a record aggregate, the expressions
3068 -- field will be set if there are positional associations.
3070 -- Note: gigi/gcc can handle array aggregates correctly providing that
3071 -- they are entirely positional, and the array subtype involved has a
3072 -- known at compile time length and is not bit packed, or a convention
3073 -- Fortran array with more than one dimension. If these conditions
3074 -- are not met, then the front end must translate the aggregate into
3075 -- an appropriate set of assignments into a temporary.
3077 -- Note: for the record aggregate case, gigi/gcc can handle all cases
3078 -- of record aggregates, including those for packed, and rep-claused
3079 -- records, and also variant records, providing that there are no
3080 -- variable length fields whose size is not known at runtime, and
3081 -- providing that the aggregate is presented in fully named form.
3083 ----------------------------------------------
3084 -- 4.3.1 Record Component Association List --
3085 ----------------------------------------------
3087 -- RECORD_COMPONENT_ASSOCIATION_LIST ::=
3088 -- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
3091 -- There is no explicit node in the tree for a record component
3092 -- association list. Instead the Null_Record_Present flag is set in
3093 -- the parent node for the NULL RECORD case.
3095 ------------------------------------------------------
3096 -- 4.3.1 Record Component Association (also 4.3.3) --
3097 ------------------------------------------------------
3099 -- RECORD_COMPONENT_ASSOCIATION ::=
3100 -- [COMPONENT_CHOICE_LIST =>] EXPRESSION
3102 -- N_Component_Association
3103 -- Sloc points to first selector name
3105 -- Loop_Actions (List2-Sem)
3106 -- Expression (Node3)
3107 -- Box_Present (Flag15)
3109 -- Note: this structure is used for both record component associations
3110 -- and array component associations, since the two cases aren't always
3111 -- separable by the parser. The choices list may represent either a
3112 -- list of selector names in the record aggregate case, or a list of
3113 -- discrete choices in the array aggregate case or an N_Others_Choice
3114 -- node (which appears as a singleton list). Box_Present gives support
3115 -- to Ada 2005 (AI-287).
3117 -----------------------------------
3118 -- 4.3.1 Commponent Choice List --
3119 -----------------------------------
3121 -- COMPONENT_CHOICE_LIST ::=
3122 -- component_SELECTOR_NAME {| component_SELECTOR_NAME}
3125 -- The entries of a component choice list appear in the Choices list
3126 -- of the associated N_Component_Association, as either selector
3127 -- names, or as an N_Others_Choice node.
3129 --------------------------------
3130 -- 4.3.2 Extension Aggregate --
3131 --------------------------------
3133 -- EXTENSION_AGGREGATE ::=
3134 -- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
3136 -- Note: extension aggregates are not permitted in Ada 83 mode
3138 -- N_Extension_Aggregate
3139 -- Sloc points to left parenthesis
3140 -- Ancestor_Part (Node3)
3141 -- Associated_Node (Node4-Sem)
3142 -- Expressions (List1) (set to No_List if none or null record case)
3143 -- Component_Associations (List2) (set to No_List if none)
3144 -- Null_Record_Present (Flag17)
3145 -- Expansion_Delayed (Flag11-Sem)
3146 -- plus fields for expression
3148 --------------------------
3149 -- 4.3.2 Ancestor Part --
3150 --------------------------
3152 -- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
3154 ----------------------------
3155 -- 4.3.3 Array Aggregate --
3156 ----------------------------
3158 -- ARRAY_AGGREGATE ::=
3159 -- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
3161 ---------------------------------------
3162 -- 4.3.3 Positional Array Aggregate --
3163 ---------------------------------------
3165 -- POSITIONAL_ARRAY_AGGREGATE ::=
3166 -- (EXPRESSION, EXPRESSION {, EXPRESSION})
3167 -- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
3169 -- See Record_Aggregate (4.3.1) for node structure
3171 ----------------------------------
3172 -- 4.3.3 Named Array Aggregate --
3173 ----------------------------------
3175 -- NAMED_ARRAY_AGGREGATE ::=
3176 -- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
3178 -- See Record_Aggregate (4.3.1) for node structure
3180 ----------------------------------------
3181 -- 4.3.3 Array Component Association --
3182 ----------------------------------------
3184 -- ARRAY_COMPONENT_ASSOCIATION ::=
3185 -- DISCRETE_CHOICE_LIST => EXPRESSION
3187 -- See Record_Component_Association (4.3.1) for node structure
3189 --------------------------------------------------
3190 -- 4.4 Expression/Relation/Term/Factor/Primary --
3191 --------------------------------------------------
3194 -- RELATION {and RELATION} | RELATION {and then RELATION}
3195 -- | RELATION {or RELATION} | RELATION {or else RELATION}
3196 -- | RELATION {xor RELATION}
3199 -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
3200 -- | SIMPLE_EXPRESSION [not] in RANGE
3201 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3203 -- SIMPLE_EXPRESSION ::=
3204 -- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
3206 -- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
3208 -- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
3210 -- No nodes are generated for any of these constructs. Instead, the
3211 -- node for the operator appears directly. When we refer to an
3212 -- expression in this description, we mean any of the possible
3213 -- consistuent components of an expression (e.g. identifier is
3214 -- an example of an expression).
3221 -- NUMERIC_LITERAL | null
3222 -- | STRING_LITERAL | AGGREGATE
3223 -- | NAME | QUALIFIED_EXPRESSION
3224 -- | ALLOCATOR | (EXPRESSION)
3226 -- Usually there is no explicit node in the tree for primary. Instead
3227 -- the constituent (e.g. AGGREGATE) appears directly. There are two
3228 -- exceptions. First, there is an explicit node for a null primary.
3231 -- Sloc points to NULL
3232 -- plus fields for expression
3234 -- Second, the case of (EXPRESSION) is handled specially. Ada requires
3235 -- that the parser keep track of which subexpressions are enclosed
3236 -- in parentheses, and how many levels of parentheses are used. This
3237 -- information is required for optimization purposes, and also for
3238 -- some semantic checks (e.g. (((1))) in a procedure spec does not
3239 -- conform with ((((1)))) in the body).
3241 -- The parentheses are recorded by keeping a Paren_Count field in every
3242 -- subexpression node (it is actually present in all nodes, but only
3243 -- used in subexpression nodes). This count records the number of
3244 -- levels of parentheses. If the number of levels in the source exceeds
3245 -- the maximum accomodated by this count, then the count is simply left
3246 -- at the maximum value. This means that there are some pathalogical
3247 -- cases of failure to detect conformance failures (e.g. an expression
3248 -- with 500 levels of parens will conform with one with 501 levels),
3249 -- but we do not need to lose sleep over this.
3251 -- Historical note: in versions of GNAT prior to 1.75, there was a node
3252 -- type N_Parenthesized_Expression used to accurately record unlimited
3253 -- numbers of levels of parentheses. However, it turned out to be a
3254 -- real nuisance to have to take into account the possible presence of
3255 -- this node during semantic analysis, since basically parentheses have
3256 -- zero relevance to semantic analysis.
3258 -- Note: the level of parentheses always present in things like
3259 -- aggregates does not count, only the parentheses in the primary
3260 -- (EXPRESSION) affect the setting of the Paren_Count field.
3262 -- 2nd Note: the contents of the Expression field must be ignored (i.e.
3263 -- treated as though it were Empty) if No_Initialization is set True.
3265 --------------------------------------
3266 -- 4.5 Short Circuit Control Forms --
3267 --------------------------------------
3270 -- RELATION {and then RELATION} | RELATION {or else RELATION}
3272 -- Gigi restriction: For both these control forms, the operand and
3273 -- result types are always Standard.Boolean. The expander inserts the
3274 -- required conversion operations where needed to ensure this is the
3278 -- Sloc points to AND of AND THEN
3279 -- Left_Opnd (Node2)
3280 -- Right_Opnd (Node3)
3281 -- Actions (List1-Sem)
3282 -- plus fields for expression
3285 -- Sloc points to OR of OR ELSE
3286 -- Left_Opnd (Node2)
3287 -- Right_Opnd (Node3)
3288 -- Actions (List1-Sem)
3289 -- plus fields for expression
3291 -- Note: The Actions field is used to hold actions associated with
3292 -- the right hand operand. These have to be treated specially since
3293 -- they are not unconditionally executed. See Insert_Actions for a
3294 -- more detailed description of how these actions are handled.
3296 ---------------------------
3297 -- 4.5 Membership Tests --
3298 ---------------------------
3301 -- SIMPLE_EXPRESSION [not] in RANGE
3302 -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
3304 -- Note: although the grammar above allows only a range or a
3305 -- subtype mark, the parser in fact will accept any simple
3306 -- expression in place of a subtype mark. This means that the
3307 -- semantic analyzer must be prepared to deal with, and diagnose
3308 -- a simple expression other than a name for the right operand.
3309 -- This simplifies error recovery in the parser.
3312 -- Sloc points to IN
3313 -- Left_Opnd (Node2)
3314 -- Right_Opnd (Node3)
3315 -- plus fields for expression
3318 -- Sloc points to NOT of NOT IN
3319 -- Left_Opnd (Node2)
3320 -- Right_Opnd (Node3)
3321 -- plus fields for expression
3323 --------------------
3325 --------------------
3327 -- LOGICAL_OPERATOR ::= and | or | xor
3329 -- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
3331 -- BINARY_ADDING_OPERATOR ::= + | - | &
3333 -- UNARY_ADDING_OPERATOR ::= + | -
3335 -- MULTIPLYING_OPERATOR ::= * | / | mod | rem
3337 -- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
3339 -- Sprint syntax if Treat_Fixed_As_Integer is set:
3346 -- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
3347 -- will only be given nodes with the Treat_Fixed_As_Integer flag set.
3348 -- All handling of smalls for multiplication and division is handled
3349 -- by the front end (mod and rem result only from expansion). Gigi
3350 -- thus never needs to worry about small values (for other operators
3351 -- operating on fixed-point, e.g. addition, the small value does not
3352 -- have any semantic effect anyway, these are always integer operations.
3354 -- Gigi restriction: For all operators taking Boolean operands, the
3355 -- type is always Standard.Boolean. The expander inserts the required
3356 -- conversion operations where needed to ensure this is the case.
3359 -- Sloc points to AND
3360 -- Do_Length_Check (Flag4-Sem)
3361 -- plus fields for binary operator
3362 -- plus fields for expression
3365 -- Sloc points to OR
3366 -- Do_Length_Check (Flag4-Sem)
3367 -- plus fields for binary operator
3368 -- plus fields for expression
3371 -- Sloc points to XOR
3372 -- Do_Length_Check (Flag4-Sem)
3373 -- plus fields for binary operator
3374 -- plus fields for expression
3378 -- plus fields for binary operator
3379 -- plus fields for expression
3382 -- Sloc points to /=
3383 -- plus fields for binary operator
3384 -- plus fields for expression
3388 -- plus fields for binary operator
3389 -- plus fields for expression
3392 -- Sloc points to <=
3393 -- plus fields for binary operator
3394 -- plus fields for expression
3398 -- plus fields for binary operator
3399 -- plus fields for expression
3402 -- Sloc points to >=
3403 -- plus fields for binary operator
3404 -- plus fields for expression
3407 -- Sloc points to + (binary)
3408 -- plus fields for binary operator
3409 -- plus fields for expression
3412 -- Sloc points to - (binary)
3413 -- plus fields for binary operator
3414 -- plus fields for expression
3418 -- Is_Component_Left_Opnd (Flag13-Sem)
3419 -- Is_Component_Right_Opnd (Flag14-Sem)
3420 -- plus fields for binary operator
3421 -- plus fields for expression
3425 -- Treat_Fixed_As_Integer (Flag14-Sem)
3426 -- Rounded_Result (Flag18-Sem)
3427 -- plus fields for binary operator
3428 -- plus fields for expression
3432 -- Treat_Fixed_As_Integer (Flag14-Sem)
3433 -- Do_Division_Check (Flag13-Sem)
3434 -- Rounded_Result (Flag18-Sem)
3435 -- plus fields for binary operator
3436 -- plus fields for expression
3439 -- Sloc points to MOD
3440 -- Treat_Fixed_As_Integer (Flag14-Sem)
3441 -- Do_Division_Check (Flag13-Sem)
3442 -- plus fields for binary operator
3443 -- plus fields for expression
3446 -- Sloc points to REM
3447 -- Treat_Fixed_As_Integer (Flag14-Sem)
3448 -- Do_Division_Check (Flag13-Sem)
3449 -- plus fields for binary operator
3450 -- plus fields for expression
3453 -- Is_Power_Of_2_For_Shift (Flag13-Sem)
3454 -- Sloc points to **
3455 -- plus fields for binary operator
3456 -- plus fields for expression
3459 -- Sloc points to + (unary)
3460 -- plus fields for unary operator
3461 -- plus fields for expression
3464 -- Sloc points to - (unary)
3465 -- plus fields for unary operator
3466 -- plus fields for expression
3469 -- Sloc points to ABS
3470 -- plus fields for unary operator
3471 -- plus fields for expression
3474 -- Sloc points to NOT
3475 -- plus fields for unary operator
3476 -- plus fields for expression
3478 -- See also shift operators in section B.2
3480 -- Note on fixed-point operations passed to Gigi: For adding operators,
3481 -- the semantics is to treat these simply as integer operations, with
3482 -- the small values being ignored (the bounds are already stored in
3483 -- units of small, so that constraint checking works as usual). For the
3484 -- case of multiply/divide/rem/mod operations, Gigi will only see fixed
3485 -- point operands if the Treat_Fixed_As_Integer flag is set and will
3486 -- thus treat these nodes in identical manner, ignoring small values.
3488 --------------------------
3489 -- 4.6 Type Conversion --
3490 --------------------------
3492 -- TYPE_CONVERSION ::=
3493 -- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
3495 -- In the (NAME) case, the name is stored as the expression
3497 -- Note: the parser never generates a type conversion node, since it
3498 -- looks like an indexed component which is generated by preference.
3499 -- The semantic pass must correct this misidentification.
3501 -- Gigi handles conversions that involve no change in the root type,
3502 -- and also all conversions from integer to floating-point types.
3503 -- Conversions from floating-point to integer are only handled in
3504 -- the case where Float_Truncate flag set. Other conversions from
3505 -- floating-point to integer (involving rounding) and all conversions
3506 -- involving fixed-point types are handled by the expander.
3508 -- Sprint syntax if Float_Truncate set: X^(Y)
3509 -- Sprint syntax if Conversion_OK set X?(Y)
3510 -- Sprint syntax if both flags set X?^(Y)
3512 -- Note: If either the operand or result type is fixed-point, Gigi will
3513 -- only see a type conversion node with Conversion_OK set. The front end
3514 -- takes care of all handling of small's for fixed-point conversions.
3516 -- N_Type_Conversion
3517 -- Sloc points to first token of subtype mark
3518 -- Subtype_Mark (Node4)
3519 -- Expression (Node3)
3520 -- Do_Tag_Check (Flag13-Sem)
3521 -- Do_Length_Check (Flag4-Sem)
3522 -- Do_Overflow_Check (Flag17-Sem)
3523 -- Float_Truncate (Flag11-Sem)
3524 -- Rounded_Result (Flag18-Sem)
3525 -- Conversion_OK (Flag14-Sem)
3526 -- plus fields for expression
3528 -- Note: if a range check is required, then the Do_Range_Check flag
3529 -- is set in the Expression with the check being done against the
3530 -- target type range (after the base type conversion, if any).
3532 -------------------------------
3533 -- 4.7 Qualified Expression --
3534 -------------------------------
3536 -- QUALIFIED_EXPRESSION ::=
3537 -- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
3539 -- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
3540 -- the expression, so the Expression field of this node always points
3541 -- to a parenthesized expression in this case (i.e. Paren_Count will
3542 -- always be non-zero for the referenced expression if it is not an
3545 -- N_Qualified_Expression
3546 -- Sloc points to apostrophe
3547 -- Subtype_Mark (Node4)
3548 -- Expression (Node3) expression or aggregate
3549 -- plus fields for expression
3551 --------------------
3553 --------------------
3556 -- new [NULL_EXCLUSION] SUBTYPE_INDICATION | new QUALIFIED_EXPRESSION
3558 -- Sprint syntax (when storage pool present)
3559 -- new xxx (storage_pool = pool)
3562 -- Sloc points to NEW
3563 -- Expression (Node3) subtype indication or qualified expression
3564 -- Null_Exclusion_Present (Flag11)
3565 -- Storage_Pool (Node1-Sem)
3566 -- Procedure_To_Call (Node4-Sem)
3567 -- No_Initialization (Flag13-Sem)
3568 -- Do_Storage_Check (Flag17-Sem)
3569 -- plus fields for expression
3571 ---------------------------------
3572 -- 5.1 Sequence Of Statements --
3573 ---------------------------------
3575 -- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
3577 -- Note: Although the parser will not accept a declaration as a
3578 -- statement, the semantic analyzer may insert declarations (e.g.
3579 -- declarations of implicit types needed for execution of other
3580 -- statements) into a sequence of statements, so the code genmerator
3581 -- should be prepared to accept a declaration where a statement is
3582 -- expected. Note also that pragmas can appear as statements.
3584 --------------------
3586 --------------------
3589 -- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
3591 -- There is no explicit node in the tree for a statement. Instead, the
3592 -- individual statement appears directly. Labels are treated as a
3593 -- kind of statement, i.e. they are linked into a statement list at
3594 -- the point they appear, so the labeled statement appears following
3595 -- the label or labels in the statement list.
3597 ---------------------------
3598 -- 5.1 Simple Statement --
3599 ---------------------------
3601 -- SIMPLE_STATEMENT ::= NULL_STATEMENT
3602 -- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
3603 -- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
3604 -- | RETURN_STATEMENT | ENTRY_CALL_STATEMENT
3605 -- | REQUEUE_STATEMENT | DELAY_STATEMENT
3606 -- | ABORT_STATEMENT | RAISE_STATEMENT
3609 -----------------------------
3610 -- 5.1 Compound Statement --
3611 -----------------------------
3613 -- COMPOUND_STATEMENT ::=
3614 -- IF_STATEMENT | CASE_STATEMENT
3615 -- | LOOP_STATEMENT | BLOCK_STATEMENT
3616 -- | ACCEPT_STATEMENT | SELECT_STATEMENT
3618 -------------------------
3619 -- 5.1 Null Statement --
3620 -------------------------
3622 -- NULL_STATEMENT ::= null;
3625 -- Sloc points to NULL
3631 -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
3633 -- Note that the occurrence of a label is not a defining identifier,
3634 -- but rather a referencing occurrence. The defining occurrence is
3635 -- in the implicit label declaration which occurs in the innermost
3639 -- Sloc points to <<
3640 -- Identifier (Node1) direct name of statement identifier
3641 -- Exception_Junk (Flag7-Sem)
3643 -------------------------------
3644 -- 5.1 Statement Identifier --
3645 -------------------------------
3647 -- STATEMENT_INDENTIFIER ::= DIRECT_NAME
3649 -- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
3650 -- (not an OPERATOR_SYMBOL)
3652 -------------------------------
3653 -- 5.2 Assignment Statement --
3654 -------------------------------
3656 -- ASSIGNMENT_STATEMENT ::=
3657 -- variable_NAME := EXPRESSION;
3659 -- N_Assignment_Statement
3660 -- Sloc points to :=
3662 -- Expression (Node3)
3663 -- Do_Tag_Check (Flag13-Sem)
3664 -- Do_Length_Check (Flag4-Sem)
3665 -- Forwards_OK (Flag5-Sem)
3666 -- Backwards_OK (Flag6-Sem)
3667 -- No_Ctrl_Actions (Flag7-Sem)
3669 -- Note: if a range check is required, then the Do_Range_Check flag
3670 -- is set in the Expression (right hand side), with the check being
3671 -- done against the type of the Name (left hand side).
3673 -- Note: the back end places some restrictions on the form of the
3674 -- Expression field. If the object being assigned to is Atomic, then
3675 -- the Expression may not have the form of an aggregate (since this
3676 -- might cause the back end to generate separate assignments). It
3677 -- also cannot be a reference to an object marked as a true constant
3678 -- (Is_True_Constant flag set), where the object is itself initalized
3679 -- with an aggregate. If necessary the front end must generate an
3680 -- extra temporary (with Is_True_Constant set False), and initialize
3681 -- this temporary as required (the temporary itself is not atomic).
3683 -----------------------
3684 -- 5.3 If Statement --
3685 -----------------------
3688 -- if CONDITION then
3689 -- SEQUENCE_OF_STATEMENTS
3690 -- {elsif CONDITION then
3691 -- SEQUENCE_OF_STATEMENTS}
3693 -- SEQUENCE_OF_STATEMENTS]
3696 -- Gigi restriction: This expander ensures that the type of the
3697 -- Condition fields is always Standard.Boolean, even if the type
3698 -- in the source is some non-standard boolean type.
3701 -- Sloc points to IF
3702 -- Condition (Node1)
3703 -- Then_Statements (List2)
3704 -- Elsif_Parts (List3) (set to No_List if none present)
3705 -- Else_Statements (List4) (set to No_List if no else part present)
3706 -- End_Span (Uint5) (set to No_Uint if expander generated)
3709 -- Sloc points to ELSIF
3710 -- Condition (Node1)
3711 -- Then_Statements (List2)
3712 -- Condition_Actions (List3-Sem)
3714 --------------------
3716 --------------------
3718 -- CONDITION ::= boolean_EXPRESSION
3720 -------------------------
3721 -- 5.4 Case Statement --
3722 -------------------------
3724 -- CASE_STATEMENT ::=
3725 -- case EXPRESSION is
3726 -- CASE_STATEMENT_ALTERNATIVE
3727 -- {CASE_STATEMENT_ALTERNATIVE}
3730 -- Note: the Alternatives can contain pragmas. These only occur at
3731 -- the start of the list, since any pragmas occurring after the first
3732 -- alternative are absorbed into the corresponding statement sequence.
3735 -- Sloc points to CASE
3736 -- Expression (Node3)
3737 -- Alternatives (List4)
3738 -- End_Span (Uint5) (set to No_Uint if expander generated)
3740 -------------------------------------
3741 -- 5.4 Case Statement Alternative --
3742 -------------------------------------
3744 -- CASE_STATEMENT_ALTERNATIVE ::=
3745 -- when DISCRETE_CHOICE_LIST =>
3746 -- SEQUENCE_OF_STATEMENTS
3748 -- N_Case_Statement_Alternative
3749 -- Sloc points to WHEN
3750 -- Discrete_Choices (List4)
3751 -- Statements (List3)
3753 -------------------------
3754 -- 5.5 Loop Statement --
3755 -------------------------
3757 -- LOOP_STATEMENT ::=
3758 -- [loop_STATEMENT_IDENTIFIER :]
3759 -- [ITERATION_SCHEME] loop
3760 -- SEQUENCE_OF_STATEMENTS
3761 -- end loop [loop_IDENTIFIER];
3763 -- Note: The occurrence of a loop label is not a defining identifier
3764 -- but rather a referencing occurrence. The defining occurrence is in
3765 -- the implicit label declaration which occurs in the innermost
3768 -- Note: there is always a loop statement identifier present in
3769 -- the tree, even if none was given in the source. In the case where
3770 -- no loop identifier is given in the source, the parser creates
3771 -- a name of the form _Loop_n, where n is a decimal integer (the
3772 -- two underlines ensure that the loop names created in this manner
3773 -- do not conflict with any user defined identifiers), and the flag
3774 -- Has_Created_Identifier is set to True. The only exception to the
3775 -- rule that all loop statement nodes have identifiers occurs for
3776 -- loops constructed by the expander, and the semantic analyzer will
3777 -- create and supply dummy loop identifiers in these cases.
3780 -- Sloc points to LOOP
3781 -- Identifier (Node1) loop identifier (set to Empty if no identifier)
3782 -- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
3783 -- Statements (List3)
3784 -- End_Label (Node4)
3785 -- Has_Created_Identifier (Flag15)
3786 -- Is_Null_Loop (Flag16)
3788 --------------------------
3789 -- 5.5 Iteration Scheme --
3790 --------------------------
3792 -- ITERATION_SCHEME ::=
3793 -- while CONDITION | for LOOP_PARAMETER_SPECIFICATION
3795 -- Gigi restriction: This expander ensures that the type of the
3796 -- Condition field is always Standard.Boolean, even if the type
3797 -- in the source is some non-standard boolean type.
3799 -- N_Iteration_Scheme
3800 -- Sloc points to WHILE or FOR
3801 -- Condition (Node1) (set to Empty if FOR case)
3802 -- Condition_Actions (List3-Sem)
3803 -- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
3805 ---------------------------------------
3806 -- 5.5 Loop parameter specification --
3807 ---------------------------------------
3809 -- LOOP_PARAMETER_SPECIFICATION ::=
3810 -- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
3812 -- N_Loop_Parameter_Specification
3813 -- Sloc points to first identifier
3814 -- Defining_Identifier (Node1)
3815 -- Reverse_Present (Flag15)
3816 -- Discrete_Subtype_Definition (Node4)
3818 --------------------------
3819 -- 5.6 Block Statement --
3820 --------------------------
3822 -- BLOCK_STATEMENT ::=
3823 -- [block_STATEMENT_IDENTIFIER:]
3825 -- DECLARATIVE_PART]
3827 -- HANDLED_SEQUENCE_OF_STATEMENTS
3828 -- end [block_IDENTIFIER];
3830 -- Note that the occurrence of a block identifier is not a defining
3831 -- identifier, but rather a referencing occurrence. The defining
3832 -- occurrence is in the implicit label declaration which occurs in
3833 -- the innermost enclosing block.
3835 -- Note: there is always a block statement identifier present in
3836 -- the tree, even if none was given in the source. In the case where
3837 -- no block identifier is given in the source, the parser creates
3838 -- a name of the form _Block_n, where n is a decimal integer (the
3839 -- two underlines ensure that the block names created in this manner
3840 -- do not conflict with any user defined identifiers), and the flag
3841 -- Has_Created_Identifier is set to True. The only exception to the
3842 -- rule that all loop statement nodes have identifiers occurs for
3843 -- blocks constructed by the expander, and the semantic analyzer
3844 -- creates and supplies dummy names for the blocks).
3846 -- N_Block_Statement
3847 -- Sloc points to DECLARE or BEGIN
3848 -- Identifier (Node1) block direct name (set to Empty if not present)
3849 -- Declarations (List2) (set to No_List if no DECLARE part)
3850 -- Handled_Statement_Sequence (Node4)
3851 -- Is_Task_Master (Flag5-Sem)
3852 -- Activation_Chain_Entity (Node3-Sem)
3853 -- Has_Created_Identifier (Flag15)
3854 -- Is_Task_Allocation_Block (Flag6)
3855 -- Is_Asynchronous_Call_Block (Flag7)
3857 -------------------------
3858 -- 5.7 Exit Statement --
3859 -------------------------
3861 -- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
3863 -- Gigi restriction: This expander ensures that the type of the
3864 -- Condition field is always Standard.Boolean, even if the type
3865 -- in the source is some non-standard boolean type.
3868 -- Sloc points to EXIT
3869 -- Name (Node2) (set to Empty if no loop name present)
3870 -- Condition (Node1) (set to Empty if no when part present)
3872 -------------------------
3873 -- 5.9 Goto Statement --
3874 -------------------------
3876 -- GOTO_STATEMENT ::= goto label_NAME;
3879 -- Sloc points to GOTO
3881 -- Exception_Junk (Flag7-Sem)
3883 ---------------------------------
3884 -- 6.1 Subprogram Declaration --
3885 ---------------------------------
3887 -- SUBPROGRAM_DECLARATION ::= SUBPROGRAM_SPECIFICATION;
3889 -- N_Subprogram_Declaration
3890 -- Sloc points to FUNCTION or PROCEDURE
3891 -- Specification (Node1)
3892 -- Body_To_Inline (Node3-Sem)
3893 -- Corresponding_Body (Node5-Sem)
3894 -- Parent_Spec (Node4-Sem)
3896 ------------------------------------------
3897 -- 6.1 Abstract Subprogram Declaration --
3898 ------------------------------------------
3900 -- ABSTRACT_SUBPROGRAM_DECLARATION ::=
3901 -- SUBPROGRAM_SPECIFICATION is abstract;
3903 -- N_Abstract_Subprogram_Declaration
3904 -- Sloc points to ABSTRACT
3905 -- Specification (Node1)
3907 -----------------------------------
3908 -- 6.1 Subprogram Specification --
3909 -----------------------------------
3911 -- SUBPROGRAM_SPECIFICATION ::=
3912 -- [[not] overriding]
3913 -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
3914 -- | [[not] overriding]
3915 -- function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
3917 -- Note: there are no separate nodes for the profiles, instead the
3918 -- information appears directly in the following nodes.
3920 -- N_Function_Specification
3921 -- Sloc points to FUNCTION
3922 -- Defining_Unit_Name (Node1) (the designator)
3923 -- Elaboration_Boolean (Node2-Sem)
3924 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3925 -- Null_Exclusion_Present (Flag11)
3926 -- Result_Definition (Node4) for result subtype
3927 -- Generic_Parent (Node5-Sem)
3928 -- Must_Override (Flag14) set if overriding indicator present
3929 -- Must_Not_Override (Flag15) set if not_overriding indicator present
3931 -- N_Procedure_Specification
3932 -- Sloc points to PROCEDURE
3933 -- Defining_Unit_Name (Node1)
3934 -- Elaboration_Boolean (Node2-Sem)
3935 -- Parameter_Specifications (List3) (set to No_List if no formal part)
3936 -- Generic_Parent (Node5-Sem)
3937 -- Null_Present (Flag13) set for null procedure case (Ada 2005 feature)
3938 -- Must_Override (Flag14) set if overriding indicator present
3939 -- Must_Not_Override (Flag15) set if not_overriding indicator present
3941 -- Note: overriding indicator is an Ada 2005 feature
3943 ---------------------
3944 -- 6.1 Designator --
3945 ---------------------
3948 -- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
3950 -- Designators that are simply identifiers or operator symbols appear
3951 -- directly in the tree in this form. The following node is used only
3952 -- in the case where the designator has a parent unit name component.
3955 -- Sloc points to period
3956 -- Name (Node2) holds the parent unit name. Note that this is always
3957 -- non-Empty, since this node is only used for the case where a
3958 -- parent library unit package name is present.
3959 -- Identifier (Node1)
3961 -- Note that the identifier can also be an operator symbol here
3963 ------------------------------
3964 -- 6.1 Defining Designator --
3965 ------------------------------
3967 -- DEFINING_DESIGNATOR ::=
3968 -- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
3970 -------------------------------------
3971 -- 6.1 Defining Program Unit Name --
3972 -------------------------------------
3974 -- DEFINING_PROGRAM_UNIT_NAME ::=
3975 -- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
3977 -- The parent unit name is present only in the case of a child unit
3978 -- name (permissible only for Ada 95 for a library level unit, i.e.
3979 -- a unit at scope level one). If no such name is present, the defining
3980 -- program unit name is represented simply as the defining identifier.
3981 -- In the child unit case, the following node is used to represent the
3984 -- N_Defining_Program_Unit_Name
3985 -- Sloc points to period
3986 -- Name (Node2) holds the parent unit name. Note that this is always
3987 -- non-Empty, since this node is only used for the case where a
3988 -- parent unit name is present.
3989 -- Defining_Identifier (Node1)
3991 --------------------------
3992 -- 6.1 Operator Symbol --
3993 --------------------------
3995 -- OPERATOR_SYMBOL ::= STRING_LITERAL
3997 -- Note: the fields of the N_Operator_Symbol node are laid out to
3998 -- match the corresponding fields of an N_Character_Literal node. This
3999 -- allows easy conversion of the operator symbol node into a character
4000 -- literal node in the case where a string constant of the form of an
4001 -- operator symbol is scanned out as such, but turns out semantically
4002 -- to be a string literal that is not an operator. For details see
4003 -- Sinfo.CN.Change_Operator_Symbol_To_String_Literal.
4005 -- N_Operator_Symbol
4006 -- Sloc points to literal
4007 -- Chars (Name1) contains the Name_Id for the operator symbol
4008 -- Strval (Str3) Id of string value. This is used if the operator
4009 -- symbol turns out to be a normal string after all.
4010 -- Entity (Node4-Sem)
4011 -- Associated_Node (Node4-Sem)
4012 -- Has_Private_View (Flag11-Sem) set in generic units.
4013 -- Etype (Node5-Sem)
4015 -- Note: the Strval field may be set to No_String for generated
4016 -- operator symbols that are known not to be string literals
4019 -----------------------------------
4020 -- 6.1 Defining Operator Symbol --
4021 -----------------------------------
4023 -- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
4025 -- A defining operator symbol is an entity, which has additional
4026 -- fields depending on the setting of the Ekind field. These
4027 -- additional fields are defined (and access subprograms declared)
4028 -- in package Einfo.
4030 -- Note: N_Defining_Operator_Symbol is an extended node whose fields
4031 -- are deliberately layed out to match the layout of fields in an
4032 -- ordinary N_Operator_Symbol node allowing for easy alteration of
4033 -- an operator symbol node into a defining operator symbol node.
4034 -- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
4035 -- for further details.
4037 -- N_Defining_Operator_Symbol
4038 -- Sloc points to literal
4039 -- Chars (Name1) contains the Name_Id for the operator symbol
4040 -- Next_Entity (Node2-Sem)
4041 -- Scope (Node3-Sem)
4042 -- Etype (Node5-Sem)
4044 ----------------------------
4045 -- 6.1 Parameter Profile --
4046 ----------------------------
4048 -- PARAMETER_PROFILE ::= [FORMAL_PART]
4050 ---------------------------------------
4051 -- 6.1 Parameter and Result Profile --
4052 ---------------------------------------
4054 -- PARAMETER_AND_RESULT_PROFILE ::=
4055 -- [FORMAL_PART] return [NULL_EXCLUSION] SUBTYPE_MARK
4056 -- | [FORMAL_PART] return ACCESS_DEFINITION
4058 -- There is no explicit node in the tree for a parameter and result
4059 -- profile. Instead the information appears directly in the parent.
4061 ----------------------
4062 -- 6.1 Formal part --
4063 ----------------------
4066 -- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
4068 ----------------------------------
4069 -- 6.1 Parameter specification --
4070 ----------------------------------
4072 -- PARAMETER_SPECIFICATION ::=
4073 -- DEFINING_IDENTIFIER_LIST : MODE [NULL_EXCLUSION] SUBTYPE_MARK
4074 -- [:= DEFAULT_EXPRESSION]
4075 -- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
4076 -- [:= DEFAULT_EXPRESSION]
4078 -- Although the syntax allows multiple identifiers in the list, the
4079 -- semantics is as though successive specifications were given with
4080 -- identical type definition and expression components. To simplify
4081 -- semantic processing, the parser represents a multiple declaration
4082 -- case as a sequence of single Specifications, using the More_Ids and
4083 -- Prev_Ids flags to preserve the original source form as described
4084 -- in the section on "Handling of Defining Identifier Lists".
4086 -- N_Parameter_Specification
4087 -- Sloc points to first identifier
4088 -- Defining_Identifier (Node1)
4089 -- In_Present (Flag15)
4090 -- Out_Present (Flag17)
4091 -- Null_Exclusion_Present (Flag11)
4092 -- Parameter_Type (Node2) subtype mark or access definition
4093 -- Expression (Node3) (set to Empty if no default expression present)
4094 -- Do_Accessibility_Check (Flag13-Sem)
4095 -- More_Ids (Flag5) (set to False if no more identifiers in list)
4096 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
4097 -- Default_Expression (Node5-Sem)
4103 -- MODE ::= [in] | in out | out
4105 -- There is no explicit node in the tree for the Mode. Instead the
4106 -- In_Present and Out_Present flags are set in the parent node to
4107 -- record the presence of keywords specifying the mode.
4109 --------------------------
4110 -- 6.3 Subprogram Body --
4111 --------------------------
4113 -- SUBPROGRAM_BODY ::=
4114 -- SUBPROGRAM_SPECIFICATION is
4117 -- HANDLED_SEQUENCE_OF_STATEMENTS
4118 -- end [DESIGNATOR];
4120 -- N_Subprogram_Body
4121 -- Sloc points to FUNCTION or PROCEDURE
4122 -- Specification (Node1)
4123 -- Declarations (List2)
4124 -- Handled_Statement_Sequence (Node4)
4125 -- Activation_Chain_Entity (Node3-Sem)
4126 -- Corresponding_Spec (Node5-Sem)
4127 -- Acts_As_Spec (Flag4-Sem)
4128 -- Bad_Is_Detected (Flag15) used only by parser
4129 -- Do_Storage_Check (Flag17-Sem)
4130 -- Has_Priority_Pragma (Flag6-Sem)
4131 -- Is_Protected_Subprogram_Body (Flag7-Sem)
4132 -- Is_Task_Master (Flag5-Sem)
4133 -- Was_Originally_Stub (Flag13-Sem)
4135 -----------------------------------
4136 -- 6.4 Procedure Call Statement --
4137 -----------------------------------
4139 -- PROCEDURE_CALL_STATEMENT ::=
4140 -- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
4142 -- Note: the reason that a procedure call has expression fields is
4143 -- that it semantically resembles an expression, e.g. overloading is
4144 -- allowed and a type is concocted for semantic processing purposes.
4145 -- Certain of these fields, such as Parens are not relevant, but it
4146 -- is easier to just supply all of them together!
4148 -- N_Procedure_Call_Statement
4149 -- Sloc points to first token of name or prefix
4150 -- Name (Node2) stores name or prefix
4151 -- Parameter_Associations (List3) (set to No_List if no
4152 -- actual parameter part)
4153 -- First_Named_Actual (Node4-Sem)
4154 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4155 -- Do_Tag_Check (Flag13-Sem)
4156 -- No_Elaboration_Check (Flag14-Sem)
4157 -- Parameter_List_Truncated (Flag17-Sem)
4158 -- ABE_Is_Certain (Flag18-Sem)
4159 -- plus fields for expression
4161 -- If any IN parameter requires a range check, then the corresponding
4162 -- argument expression has the Do_Range_Check flag set, and the range
4163 -- check is done against the formal type. Note that this argument
4164 -- expression may appear directly in the Parameter_Associations list,
4165 -- or may be a descendent of an N_Parameter_Association node that
4166 -- appears in this list.
4168 ------------------------
4169 -- 6.4 Function Call --
4170 ------------------------
4172 -- FUNCTION_CALL ::=
4173 -- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
4175 -- Note: the parser may generate an indexed component node or simply
4176 -- a name node instead of a function call node. The semantic pass must
4177 -- correct this misidentification.
4180 -- Sloc points to first token of name or prefix
4181 -- Name (Node2) stores name or prefix
4182 -- Parameter_Associations (List3) (set to No_List if no
4183 -- actual parameter part)
4184 -- First_Named_Actual (Node4-Sem)
4185 -- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
4186 -- Do_Tag_Check (Flag13-Sem)
4187 -- No_Elaboration_Check (Flag14-Sem)
4188 -- Parameter_List_Truncated (Flag17-Sem)
4189 -- ABE_Is_Certain (Flag18-Sem)
4190 -- plus fields for expression
4192 --------------------------------
4193 -- 6.4 Actual Parameter Part --
4194 --------------------------------
4196 -- ACTUAL_PARAMETER_PART ::=
4197 -- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
4199 --------------------------------
4200 -- 6.4 Parameter Association --
4201 --------------------------------
4203 -- PARAMETER_ASSOCIATION ::=
4204 -- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
4206 -- Note: the N_Parameter_Association node is built only if a formal
4207 -- parameter selector name is present, otherwise the parameter
4208 -- association appears in the tree simply as the node for the
4209 -- explicit actual parameter.
4211 -- N_Parameter_Association
4212 -- Sloc points to formal parameter
4213 -- Selector_Name (Node2) (always non-Empty, since this node is
4214 -- only used if a formal parameter selector name is present)
4215 -- Explicit_Actual_Parameter (Node3)
4216 -- Next_Named_Actual (Node4-Sem)
4218 ---------------------------
4219 -- 6.4 Actual Parameter --
4220 ---------------------------
4222 -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
4224 ---------------------------
4225 -- 6.5 Return Statement --
4226 ---------------------------
4228 -- RETURN_STATEMENT ::= return [EXPRESSION];
4230 -- N_Return_Statement
4231 -- Sloc points to RETURN
4232 -- Expression (Node3) (set to Empty if no expression present)
4233 -- Storage_Pool (Node1-Sem)
4234 -- Procedure_To_Call (Node4-Sem)
4235 -- Do_Tag_Check (Flag13-Sem)
4236 -- Return_Type (Node2-Sem)
4237 -- By_Ref (Flag5-Sem)
4239 -- Note: if a range check is required, then Do_Range_Check is set
4240 -- on the Expression. The range check is against Return_Type.
4242 ------------------------------
4243 -- 7.1 Package Declaration --
4244 ------------------------------
4246 -- PACKAGE_DECLARATION ::= PACKAGE_SPECIFICATION;
4248 -- Note: the activation chain entity for a package spec is used for
4249 -- all tasks declared in the package spec, or in the package body.
4251 -- N_Package_Declaration
4252 -- Sloc points to PACKAGE
4253 -- Specification (Node1)
4254 -- Corresponding_Body (Node5-Sem)
4255 -- Parent_Spec (Node4-Sem)
4256 -- Activation_Chain_Entity (Node3-Sem)
4258 --------------------------------
4259 -- 7.1 Package Specification --
4260 --------------------------------
4262 -- PACKAGE_SPECIFICATION ::=
4263 -- package DEFINING_PROGRAM_UNIT_NAME is
4264 -- {BASIC_DECLARATIVE_ITEM}
4266 -- {BASIC_DECLARATIVE_ITEM}]
4267 -- end [[PARENT_UNIT_NAME .] IDENTIFIER]
4269 -- N_Package_Specification
4270 -- Sloc points to PACKAGE
4271 -- Defining_Unit_Name (Node1)
4272 -- Visible_Declarations (List2)
4273 -- Private_Declarations (List3) (set to No_List if no private
4275 -- End_Label (Node4)
4276 -- Generic_Parent (Node5-Sem)
4277 -- Limited_View_Installed (Flag18-Sem)
4279 -----------------------
4280 -- 7.1 Package Body --
4281 -----------------------
4284 -- package body DEFINING_PROGRAM_UNIT_NAME is
4287 -- HANDLED_SEQUENCE_OF_STATEMENTS]
4288 -- end [[PARENT_UNIT_NAME .] IDENTIFIER];
4291 -- Sloc points to PACKAGE
4292 -- Defining_Unit_Name (Node1)
4293 -- Declarations (List2)
4294 -- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
4295 -- Corresponding_Spec (Node5-Sem)
4296 -- Was_Originally_Stub (Flag13-Sem)
4298 -- Note: if a source level package does not contain a handled sequence
4299 -- of statements, then the parser supplies a dummy one with a null
4300 -- sequence of statements. Comes_From_Source will be False in this
4301 -- constructed sequence. The reason we need this is for the End_Label
4302 -- field in the HSS.
4304 -----------------------------------
4305 -- 7.4 Private Type Declaration --
4306 -----------------------------------
4308 -- PRIVATE_TYPE_DECLARATION ::=
4309 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
4310 -- is [[abstract] tagged] [limited] private;
4312 -- Note: TAGGED is not permitted in Ada 83 mode
4314 -- N_Private_Type_Declaration
4315 -- Sloc points to TYPE
4316 -- Defining_Identifier (Node1)
4317 -- Discriminant_Specifications (List4) (set to No_List if no
4318 -- discriminant part)
4319 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4320 -- Abstract_Present (Flag4)
4321 -- Tagged_Present (Flag15)
4322 -- Limited_Present (Flag17)
4324 ----------------------------------------
4325 -- 7.4 Private Extension Declaration --
4326 ----------------------------------------
4328 -- PRIVATE_EXTENSION_DECLARATION ::=
4329 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
4330 -- [abstract] [limited] new ancestor_SUBTYPE_INDICATION
4331 -- [and INTERFACE_LIST] with private;
4333 -- Note: LIMITED, and private extension declarations are not allowed
4336 -- N_Private_Extension_Declaration
4337 -- Sloc points to TYPE
4338 -- Defining_Identifier (Node1)
4339 -- Discriminant_Specifications (List4) (set to No_List if no
4340 -- discriminant part)
4341 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
4342 -- Abstract_Present (Flag4)
4343 -- Limited_Present (Flag17)
4344 -- Subtype_Indication (Node5)
4345 -- Interface_List (List2) (set to No_List if none)
4347 ---------------------
4348 -- 8.4 Use Clause --
4349 ---------------------
4351 -- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
4353 -----------------------------
4354 -- 8.4 Use Package Clause --
4355 -----------------------------
4357 -- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
4359 -- N_Use_Package_Clause
4360 -- Sloc points to USE
4362 -- Next_Use_Clause (Node3-Sem)
4363 -- Hidden_By_Use_Clause (Elist4-Sem)
4365 --------------------------
4366 -- 8.4 Use Type Clause --
4367 --------------------------
4369 -- USE_TYPE_CLAUSE ::= use type SUBTYPE_MARK {, SUBTYPE_MARK};
4371 -- Note: use type clause is not permitted in Ada 83 mode
4373 -- N_Use_Type_Clause
4374 -- Sloc points to USE
4375 -- Subtype_Marks (List2)
4376 -- Next_Use_Clause (Node3-Sem)
4377 -- Hidden_By_Use_Clause (Elist4-Sem)
4379 -------------------------------
4380 -- 8.5 Renaming Declaration --
4381 -------------------------------
4383 -- RENAMING_DECLARATION ::=
4384 -- OBJECT_RENAMING_DECLARATION
4385 -- | EXCEPTION_RENAMING_DECLARATION
4386 -- | PACKAGE_RENAMING_DECLARATION
4387 -- | SUBPROGRAM_RENAMING_DECLARATION
4388 -- | GENERIC_RENAMING_DECLARATION
4390 --------------------------------------
4391 -- 8.5 Object Renaming Declaration --
4392 --------------------------------------
4394 -- OBJECT_RENAMING_DECLARATION ::=
4395 -- DEFINING_IDENTIFIER : SUBTYPE_MARK renames object_NAME;
4396 -- | DEFINING_IDENTIFIER : ACCESS_DEFINITION renames object_NAME;
4398 -- Note: Access_Definition is an optional field that gives support to
4399 -- Ada 2005 (AI-230). The parser generates nodes that have either the
4400 -- Subtype_Indication field or else the Access_Definition field.
4402 -- N_Object_Renaming_Declaration
4403 -- Sloc points to first identifier
4404 -- Defining_Identifier (Node1)
4405 -- Subtype_Mark (Node4) (set to Empty if not present)
4406 -- Access_Definition (Node3) (set to Empty if not present)
4408 -- Corresponding_Generic_Association (Node5-Sem)
4410 -----------------------------------------
4411 -- 8.5 Exception Renaming Declaration --
4412 -----------------------------------------
4414 -- EXCEPTION_RENAMING_DECLARATION ::=
4415 -- DEFINING_IDENTIFIER : exception renames exception_NAME;
4417 -- N_Exception_Renaming_Declaration
4418 -- Sloc points to first identifier
4419 -- Defining_Identifier (Node1)
4422 ---------------------------------------
4423 -- 8.5 Package Renaming Declaration --
4424 ---------------------------------------
4426 -- PACKAGE_RENAMING_DECLARATION ::=
4427 -- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME;
4429 -- N_Package_Renaming_Declaration
4430 -- Sloc points to PACKAGE
4431 -- Defining_Unit_Name (Node1)
4433 -- Parent_Spec (Node4-Sem)
4435 ------------------------------------------
4436 -- 8.5 Subprogram Renaming Declaration --
4437 ------------------------------------------
4439 -- SUBPROGRAM_RENAMING_DECLARATION ::=
4440 -- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME;
4442 -- N_Subprogram_Renaming_Declaration
4443 -- Sloc points to RENAMES
4444 -- Specification (Node1)
4446 -- Parent_Spec (Node4-Sem)
4447 -- Corresponding_Spec (Node5-Sem)
4448 -- Corresponding_Formal_Spec (Node3-Sem)
4449 -- From_Default (Flag6-Sem)
4451 -----------------------------------------
4452 -- 8.5.5 Generic Renaming Declaration --
4453 -----------------------------------------
4455 -- GENERIC_RENAMING_DECLARATION ::=
4456 -- generic package DEFINING_PROGRAM_UNIT_NAME
4457 -- renames generic_package_NAME
4458 -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
4459 -- renames generic_procedure_NAME
4460 -- | generic function DEFINING_PROGRAM_UNIT_NAME
4461 -- renames generic_function_NAME
4463 -- N_Generic_Package_Renaming_Declaration
4464 -- Sloc points to GENERIC
4465 -- Defining_Unit_Name (Node1)
4467 -- Parent_Spec (Node4-Sem)
4469 -- N_Generic_Procedure_Renaming_Declaration
4470 -- Sloc points to GENERIC
4471 -- Defining_Unit_Name (Node1)
4473 -- Parent_Spec (Node4-Sem)
4475 -- N_Generic_Function_Renaming_Declaration
4476 -- Sloc points to GENERIC
4477 -- Defining_Unit_Name (Node1)
4479 -- Parent_Spec (Node4-Sem)
4481 --------------------------------
4482 -- 9.1 Task Type Declaration --
4483 --------------------------------
4485 -- TASK_TYPE_DECLARATION ::=
4486 -- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4487 -- [is [new INTERFACE_LIST with] TASK_DEFINITITION];
4489 -- N_Task_Type_Declaration
4490 -- Sloc points to TASK
4491 -- Defining_Identifier (Node1)
4492 -- Discriminant_Specifications (List4) (set to No_List if no
4493 -- discriminant part)
4494 -- Interface_List (List2) (set to No_List if none)
4495 -- Task_Definition (Node3) (set to Empty if not present)
4496 -- Corresponding_Body (Node5-Sem)
4498 ----------------------------------
4499 -- 9.1 Single Task Declaration --
4500 ----------------------------------
4502 -- SINGLE_TASK_DECLARATION ::=
4503 -- task DEFINING_IDENTIFIER
4504 -- [is [new INTERFACE_LIST with] TASK_DEFINITITION];
4506 -- N_Single_Task_Declaration
4507 -- Sloc points to TASK
4508 -- Defining_Identifier (Node1)
4509 -- Interface_List (List2) (set to No_List if none)
4510 -- Task_Definition (Node3) (set to Empty if not present)
4512 --------------------------
4513 -- 9.1 Task Definition --
4514 --------------------------
4516 -- TASK_DEFINITION ::=
4520 -- end [task_IDENTIFIER]
4522 -- Note: as a result of semantic analysis, the list of task items can
4523 -- include implicit type declarations resulting from entry families.
4525 -- N_Task_Definition
4526 -- Sloc points to first token of task definition
4527 -- Visible_Declarations (List2)
4528 -- Private_Declarations (List3) (set to No_List if no private part)
4529 -- End_Label (Node4)
4530 -- Has_Priority_Pragma (Flag6-Sem)
4531 -- Has_Storage_Size_Pragma (Flag5-Sem)
4532 -- Has_Task_Info_Pragma (Flag7-Sem)
4533 -- Has_Task_Name_Pragma (Flag8-Sem)
4535 --------------------
4537 --------------------
4539 -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
4541 --------------------
4543 --------------------
4546 -- task body task_DEFINING_IDENTIFIER is
4549 -- HANDLED_SEQUENCE_OF_STATEMENTS
4550 -- end [task_IDENTIFIER];
4552 -- Gigi restriction: This node never appears
4555 -- Sloc points to TASK
4556 -- Defining_Identifier (Node1)
4557 -- Declarations (List2)
4558 -- Handled_Statement_Sequence (Node4)
4559 -- Is_Task_Master (Flag5-Sem)
4560 -- Activation_Chain_Entity (Node3-Sem)
4561 -- Corresponding_Spec (Node5-Sem)
4562 -- Was_Originally_Stub (Flag13-Sem)
4564 -------------------------------------
4565 -- 9.4 Protected Type Declaration --
4566 -------------------------------------
4568 -- PROTECTED_TYPE_DECLARATION ::=
4569 -- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
4570 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
4572 -- Note: protected type declarations are not permitted in Ada 83 mode
4574 -- N_Protected_Type_Declaration
4575 -- Sloc points to PROTECTED
4576 -- Defining_Identifier (Node1)
4577 -- Discriminant_Specifications (List4) (set to No_List if no
4578 -- discriminant part)
4579 -- Interface_List (List2) (set to No_List if none)
4580 -- Protected_Definition (Node3)
4581 -- Corresponding_Body (Node5-Sem)
4583 ---------------------------------------
4584 -- 9.4 Single Protected Declaration --
4585 ---------------------------------------
4587 -- SINGLE_PROTECTED_DECLARATION ::=
4588 -- protected DEFINING_IDENTIFIER
4589 -- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
4591 -- Note: single protected declarations are not allowed in Ada 83 mode
4593 -- N_Single_Protected_Declaration
4594 -- Sloc points to PROTECTED
4595 -- Defining_Identifier (Node1)
4596 -- Interface_List (List2) (set to No_List if none)
4597 -- Protected_Definition (Node3)
4599 -------------------------------
4600 -- 9.4 Protected Definition --
4601 -------------------------------
4603 -- PROTECTED_DEFINITION ::=
4604 -- {PROTECTED_OPERATION_DECLARATION}
4606 -- {PROTECTED_ELEMENT_DECLARATION}]
4607 -- end [protected_IDENTIFIER]
4609 -- N_Protected_Definition
4610 -- Sloc points to first token of protected definition
4611 -- Visible_Declarations (List2)
4612 -- Private_Declarations (List3) (set to No_List if no private part)
4613 -- End_Label (Node4)
4614 -- Has_Priority_Pragma (Flag6-Sem)
4616 ------------------------------------------
4617 -- 9.4 Protected Operation Declaration --
4618 ------------------------------------------
4620 -- PROTECTED_OPERATION_DECLARATION ::=
4621 -- SUBPROGRAM_DECLARATION
4622 -- | ENTRY_DECLARATION
4623 -- | REPRESENTATION_CLAUSE
4625 ----------------------------------------
4626 -- 9.4 Protected Element Declaration --
4627 ----------------------------------------
4629 -- PROTECTED_ELEMENT_DECLARATION ::=
4630 -- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
4632 -------------------------
4633 -- 9.4 Protected Body --
4634 -------------------------
4636 -- PROTECTED_BODY ::=
4637 -- protected body DEFINING_IDENTIFIER is
4638 -- {PROTECTED_OPERATION_ITEM}
4639 -- end [protected_IDENTIFIER];
4641 -- Note: protected bodies are not allowed in Ada 83 mode
4643 -- Gigi restriction: This node never appears
4646 -- Sloc points to PROTECTED
4647 -- Defining_Identifier (Node1)
4648 -- Declarations (List2) protected operation items (and pragmas)
4649 -- End_Label (Node4)
4650 -- Corresponding_Spec (Node5-Sem)
4651 -- Was_Originally_Stub (Flag13-Sem)
4653 -----------------------------------
4654 -- 9.4 Protected Operation Item --
4655 -----------------------------------
4657 -- PROTECTED_OPERATION_ITEM ::=
4658 -- SUBPROGRAM_DECLARATION
4659 -- | SUBPROGRAM_BODY
4661 -- | REPRESENTATION_CLAUSE
4663 ------------------------------
4664 -- 9.5.2 Entry Declaration --
4665 ------------------------------
4667 -- ENTRY_DECLARATION ::=
4668 -- [[not] overriding]
4669 -- entry DEFINING_IDENTIFIER
4670 -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE;
4672 -- N_Entry_Declaration
4673 -- Sloc points to ENTRY
4674 -- Defining_Identifier (Node1)
4675 -- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
4676 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4677 -- Corresponding_Body (Node5-Sem)
4678 -- Must_Override (Flag14) set if overriding indicator present
4679 -- Must_Not_Override (Flag15) set if not_overriding indicator present
4681 -- Note: overriding indicator is an Ada 2005 feature
4683 -----------------------------
4684 -- 9.5.2 Accept statement --
4685 -----------------------------
4687 -- ACCEPT_STATEMENT ::=
4688 -- accept entry_DIRECT_NAME
4689 -- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
4690 -- HANDLED_SEQUENCE_OF_STATEMENTS
4691 -- end [entry_IDENTIFIER]];
4693 -- Gigi restriction: This node never appears
4695 -- Note: there are no explicit declarations allowed in an accept
4696 -- statement. However, the implicit declarations for any statement
4697 -- identifiers (labels and block/loop identifiers) are declarations
4698 -- that belong logically to the accept statement, and that is why
4699 -- there is a Declarations field in this node.
4701 -- N_Accept_Statement
4702 -- Sloc points to ACCEPT
4703 -- Entry_Direct_Name (Node1)
4704 -- Entry_Index (Node5) (set to Empty if not present)
4705 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4706 -- Handled_Statement_Sequence (Node4)
4707 -- Declarations (List2) (set to No_List if no declarations)
4709 ------------------------
4710 -- 9.5.2 Entry Index --
4711 ------------------------
4713 -- ENTRY_INDEX ::= EXPRESSION
4715 -----------------------
4716 -- 9.5.2 Entry Body --
4717 -----------------------
4720 -- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
4723 -- HANDLED_SEQUENCE_OF_STATEMENTS
4724 -- end [entry_IDENTIFIER];
4726 -- ENTRY_BARRIER ::= when CONDITION
4728 -- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
4729 -- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
4730 -- too full (it would otherwise have too many fields)
4732 -- Gigi restriction: This node never appears
4735 -- Sloc points to ENTRY
4736 -- Defining_Identifier (Node1)
4737 -- Entry_Body_Formal_Part (Node5)
4738 -- Declarations (List2)
4739 -- Handled_Statement_Sequence (Node4)
4740 -- Activation_Chain_Entity (Node3-Sem)
4742 -----------------------------------
4743 -- 9.5.2 Entry Body Formal Part --
4744 -----------------------------------
4746 -- ENTRY_BODY_FORMAL_PART ::=
4747 -- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
4749 -- Note that an entry body formal part node is present even if it is
4750 -- empty. This reflects the grammar, in which it is the components of
4751 -- the entry body formal part that are optional, not the entry body
4752 -- formal part itself. Also this means that the barrier condition
4753 -- always has somewhere to be stored.
4755 -- Gigi restriction: This node never appears
4757 -- N_Entry_Body_Formal_Part
4758 -- Sloc points to first token
4759 -- Entry_Index_Specification (Node4) (set to Empty if not present)
4760 -- Parameter_Specifications (List3) (set to No_List if no formal part)
4761 -- Condition (Node1) from entry barrier of entry body
4763 --------------------------
4764 -- 9.5.2 Entry Barrier --
4765 --------------------------
4767 -- ENTRY_BARRIER ::= when CONDITION
4769 --------------------------------------
4770 -- 9.5.2 Entry Index Specification --
4771 --------------------------------------
4773 -- ENTRY_INDEX_SPECIFICATION ::=
4774 -- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
4776 -- Gigi restriction: This node never appears
4778 -- N_Entry_Index_Specification
4779 -- Sloc points to FOR
4780 -- Defining_Identifier (Node1)
4781 -- Discrete_Subtype_Definition (Node4)
4783 ---------------------------------
4784 -- 9.5.3 Entry Call Statement --
4785 ---------------------------------
4787 -- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
4789 -- The parser may generate a procedure call for this construct. The
4790 -- semantic pass must correct this misidentification where needed.
4792 -- Gigi restriction: This node never appears
4794 -- N_Entry_Call_Statement
4795 -- Sloc points to first token of name
4797 -- Parameter_Associations (List3) (set to No_List if no
4798 -- actual parameter part)
4799 -- First_Named_Actual (Node4-Sem)
4801 ------------------------------
4802 -- 9.5.4 Requeue Statement --
4803 ------------------------------
4805 -- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
4807 -- Note: requeue statements are not permitted in Ada 83 mode
4809 -- Gigi restriction: This node never appears
4811 -- N_Requeue_Statement
4812 -- Sloc points to REQUEUE
4814 -- Abort_Present (Flag15)
4816 --------------------------
4817 -- 9.6 Delay Statement --
4818 --------------------------
4820 -- DELAY_STATEMENT ::=
4821 -- DELAY_UNTIL_STATEMENT
4822 -- | DELAY_RELATIVE_STATEMENT
4824 --------------------------------
4825 -- 9.6 Delay Until Statement --
4826 --------------------------------
4828 -- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
4830 -- Note: delay until statements are not permitted in Ada 83 mode
4832 -- Gigi restriction: This node never appears
4834 -- N_Delay_Until_Statement
4835 -- Sloc points to DELAY
4836 -- Expression (Node3)
4838 -----------------------------------
4839 -- 9.6 Delay Relative Statement --
4840 -----------------------------------
4842 -- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
4844 -- Gigi restriction: This node never appears
4846 -- N_Delay_Relative_Statement
4847 -- Sloc points to DELAY
4848 -- Expression (Node3)
4850 ---------------------------
4851 -- 9.7 Select Statement --
4852 ---------------------------
4854 -- SELECT_STATEMENT ::=
4856 -- | TIMED_ENTRY_CALL
4857 -- | CONDITIONAL_ENTRY_CALL
4858 -- | ASYNCHRONOUS_SELECT
4860 -----------------------------
4861 -- 9.7.1 Selective Accept --
4862 -----------------------------
4864 -- SELECTIVE_ACCEPT ::=
4867 -- SELECT_ALTERNATIVE
4870 -- SELECT_ALTERNATIVE}
4872 -- SEQUENCE_OF_STATEMENTS]
4875 -- Gigi restriction: This node never appears
4877 -- Note: the guard expression, if present, appears in the node for
4878 -- the select alternative.
4880 -- N_Selective_Accept
4881 -- Sloc points to SELECT
4882 -- Select_Alternatives (List1)
4883 -- Else_Statements (List4) (set to No_List if no else part)
4889 -- GUARD ::= when CONDITION =>
4891 -- As noted above, the CONDITION that is part of a GUARD is included
4892 -- in the node for the select alernative for convenience.
4894 -------------------------------
4895 -- 9.7.1 Select Alternative --
4896 -------------------------------
4898 -- SELECT_ALTERNATIVE ::=
4899 -- ACCEPT_ALTERNATIVE
4900 -- | DELAY_ALTERNATIVE
4901 -- | TERMINATE_ALTERNATIVE
4903 -------------------------------
4904 -- 9.7.1 Accept Alternative --
4905 -------------------------------
4907 -- ACCEPT_ALTERNATIVE ::=
4908 -- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
4910 -- Gigi restriction: This node never appears
4912 -- N_Accept_Alternative
4913 -- Sloc points to ACCEPT
4914 -- Accept_Statement (Node2)
4915 -- Condition (Node1) from the guard (set to Empty if no guard present)
4916 -- Statements (List3) (set to Empty_List if no statements)
4917 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4918 -- Accept_Handler_Records (List5-Sem)
4920 ------------------------------
4921 -- 9.7.1 Delay Alternative --
4922 ------------------------------
4924 -- DELAY_ALTERNATIVE ::=
4925 -- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
4927 -- Gigi restriction: This node never appears
4929 -- N_Delay_Alternative
4930 -- Sloc points to DELAY
4931 -- Delay_Statement (Node2)
4932 -- Condition (Node1) from the guard (set to Empty if no guard present)
4933 -- Statements (List3) (set to Empty_List if no statements)
4934 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4936 ----------------------------------
4937 -- 9.7.1 Terminate Alternative --
4938 ----------------------------------
4940 -- TERMINATE_ALTERNATIVE ::= terminate;
4942 -- Gigi restriction: This node never appears
4944 -- N_Terminate_Alternative
4945 -- Sloc points to TERMINATE
4946 -- Condition (Node1) from the guard (set to Empty if no guard present)
4947 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4948 -- Pragmas_After (List5) pragmas after alt (set to No_List if none)
4950 -----------------------------
4951 -- 9.7.2 Timed Entry Call --
4952 -----------------------------
4954 -- TIMED_ENTRY_CALL ::=
4956 -- ENTRY_CALL_ALTERNATIVE
4958 -- DELAY_ALTERNATIVE
4961 -- Gigi restriction: This node never appears
4963 -- N_Timed_Entry_Call
4964 -- Sloc points to SELECT
4965 -- Entry_Call_Alternative (Node1)
4966 -- Delay_Alternative (Node4)
4968 -----------------------------------
4969 -- 9.7.2 Entry Call Alternative --
4970 -----------------------------------
4972 -- ENTRY_CALL_ALTERNATIVE ::=
4973 -- PROCEDURE_OR_ENTRY_CALL [SEQUENCE_OF_STATEMENTS]
4975 -- PROCEDURE_OR_ENTRY_CALL ::=
4976 -- PROCEDURE_CALL_STATEMENT | ENTRY_CALL_STATEMENT
4978 -- Gigi restriction: This node never appears
4980 -- N_Entry_Call_Alternative
4981 -- Sloc points to first token of entry call statement
4982 -- Entry_Call_Statement (Node1)
4983 -- Statements (List3) (set to Empty_List if no statements)
4984 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
4986 -----------------------------------
4987 -- 9.7.3 Conditional Entry Call --
4988 -----------------------------------
4990 -- CONDITIONAL_ENTRY_CALL ::=
4992 -- ENTRY_CALL_ALTERNATIVE
4994 -- SEQUENCE_OF_STATEMENTS
4997 -- Gigi restriction: This node never appears
4999 -- N_Conditional_Entry_Call
5000 -- Sloc points to SELECT
5001 -- Entry_Call_Alternative (Node1)
5002 -- Else_Statements (List4)
5004 --------------------------------
5005 -- 9.7.4 Asynchronous Select --
5006 --------------------------------
5008 -- ASYNCHRONOUS_SELECT ::=
5010 -- TRIGGERING_ALTERNATIVE
5015 -- Note: asynchronous select is not permitted in Ada 83 mode
5017 -- Gigi restriction: This node never appears
5019 -- N_Asynchronous_Select
5020 -- Sloc points to SELECT
5021 -- Triggering_Alternative (Node1)
5022 -- Abortable_Part (Node2)
5024 -----------------------------------
5025 -- 9.7.4 Triggering Alternative --
5026 -----------------------------------
5028 -- TRIGGERING_ALTERNATIVE ::=
5029 -- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
5031 -- Gigi restriction: This node never appears
5033 -- N_Triggering_Alternative
5034 -- Sloc points to first token of triggering statement
5035 -- Triggering_Statement (Node1)
5036 -- Statements (List3) (set to Empty_List if no statements)
5037 -- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
5039 ---------------------------------
5040 -- 9.7.4 Triggering Statement --
5041 ---------------------------------
5043 -- TRIGGERING_STATEMENT ::= PROCEDURE_OR_ENTRY_CALL | DELAY_STATEMENT
5045 ---------------------------
5046 -- 9.7.4 Abortable Part --
5047 ---------------------------
5049 -- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
5051 -- Gigi restriction: This node never appears
5054 -- Sloc points to ABORT
5055 -- Statements (List3)
5057 --------------------------
5058 -- 9.8 Abort Statement --
5059 --------------------------
5061 -- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
5063 -- Gigi restriction: This node never appears
5065 -- N_Abort_Statement
5066 -- Sloc points to ABORT
5069 -------------------------
5070 -- 10.1.1 Compilation --
5071 -------------------------
5073 -- COMPILATION ::= {COMPILATION_UNIT}
5075 -- There is no explicit node in the tree for a compilation, since in
5076 -- general the compiler is processing only a single compilation unit
5077 -- at a time. It is possible to parse multiple units in syntax check
5078 -- only mode, but they the trees are discarded in any case.
5080 ------------------------------
5081 -- 10.1.1 Compilation Unit --
5082 ------------------------------
5084 -- COMPILATION_UNIT ::=
5085 -- CONTEXT_CLAUSE LIBRARY_ITEM
5086 -- | CONTEXT_CLAUSE SUBUNIT
5088 -- The N_Compilation_Unit node itself respresents the above syntax.
5089 -- However, there are two additional items not reflected in the above
5090 -- syntax. First we have the global declarations that are added by the
5091 -- code generator. These are outer level declarations (so they cannot
5092 -- be represented as being inside the units). An example is the wrapper
5093 -- subprograms that are created to do ABE checking. As always a list of
5094 -- declarations can contain actions as well (i.e. statements), and such
5095 -- statements are executed as part of the elaboration of the unit. Note
5096 -- that all such declarations are elaborated before the library unit.
5098 -- Similarly, certain actions need to be elaborated at the completion
5099 -- of elaboration of the library unit (notably the statement that sets
5100 -- the Boolean flag indicating that elaboration is complete).
5102 -- The third item not reflected in the syntax is pragmas that appear
5103 -- after the compilation unit. As always pragmas are a problem since
5104 -- they are not part of the formal syntax, but can be stuck into the
5105 -- source following a set of ad hoc rules, and we have to find an ad
5106 -- hoc way of sticking them into the tree. For pragmas that appear
5107 -- before the library unit, we just consider them to be part of the
5108 -- context clause, and pragmas can appear in the Context_Items list
5109 -- of the compilation unit. However, pragmas can also appear after
5110 -- the library item.
5112 -- To deal with all these problems, we create an auxiliary node for
5113 -- a compilation unit, referenced from the N_Compilation_Unit node
5114 -- that contains these three items.
5116 -- N_Compilation_Unit
5117 -- Sloc points to first token of defining unit name
5118 -- Library_Unit (Node4-Sem) corresponding/parent spec/body
5119 -- Context_Items (List1) context items and pragmas preceding unit
5120 -- Private_Present (Flag15) set if library unit has private keyword
5121 -- Unit (Node2) library item or subunit
5122 -- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
5123 -- Has_No_Elaboration_Code (Flag17-Sem)
5124 -- Body_Required (Flag13-Sem) set for spec if body is required
5125 -- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
5126 -- First_Inlined_Subprogram (Node3-Sem)
5128 -- N_Compilation_Unit_Aux
5129 -- Sloc is a copy of the Sloc from the N_Compilation_Unit node
5130 -- Declarations (List2) (set to No_List if no global declarations)
5131 -- Actions (List1) (set to No_List if no actions)
5132 -- Pragmas_After (List5) pragmas after unit (set to No_List if none)
5133 -- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
5135 --------------------------
5136 -- 10.1.1 Library Item --
5137 --------------------------
5140 -- [private] LIBRARY_UNIT_DECLARATION
5141 -- | LIBRARY_UNIT_BODY
5142 -- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
5144 -- Note: PRIVATE is not allowed in Ada 83 mode
5146 -- There is no explicit node in the tree for library item, instead
5147 -- the declaration or body, and the flag for private if present,
5148 -- appear in the N_Compilation_Unit clause.
5150 ----------------------------------------
5151 -- 10.1.1 Library Unit Declararation --
5152 ----------------------------------------
5154 -- LIBRARY_UNIT_DECLARATION ::=
5155 -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
5156 -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
5158 -------------------------------------------------
5159 -- 10.1.1 Library Unit Renaming Declararation --
5160 -------------------------------------------------
5162 -- LIBRARY_UNIT_RENAMING_DECLARATION ::=
5163 -- PACKAGE_RENAMING_DECLARATION
5164 -- | GENERIC_RENAMING_DECLARATION
5165 -- | SUBPROGRAM_RENAMING_DECLARATION
5167 -------------------------------
5168 -- 10.1.1 Library unit body --
5169 -------------------------------
5171 -- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
5173 ------------------------------
5174 -- 10.1.1 Parent Unit Name --
5175 ------------------------------
5177 -- PARENT_UNIT_NAME ::= NAME
5179 ----------------------------
5180 -- 10.1.2 Context clause --
5181 ----------------------------
5183 -- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
5185 -- The context clause can include pragmas, and any pragmas that appear
5186 -- before the context clause proper (i.e. all configuration pragmas,
5187 -- also appear at the front of this list).
5189 --------------------------
5190 -- 10.1.2 Context_Item --
5191 --------------------------
5193 -- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
5195 -------------------------
5196 -- 10.1.2 With clause --
5197 -------------------------
5200 -- with library_unit_NAME {,library_unit_NAME};
5202 -- A separate With clause is built for each name, so that we have
5203 -- a Corresponding_Spec field for each with'ed spec. The flags
5204 -- First_Name and Last_Name are used to reconstruct the exact
5205 -- source form. When a list of names appears in one with clause,
5206 -- the first name in the list has First_Name set, and the last
5207 -- has Last_Name set. If the with clause has only one name, then
5208 -- both of the flags First_Name and Last_Name are set in this name.
5210 -- Note: in the case of implicit with's that are installed by the
5211 -- Rtsfind routine, Implicit_With is set, and the Sloc is typically
5212 -- set to Standard_Location, but it is incorrect to test the Sloc
5213 -- to find out if a with clause is implicit, test the flag instead.
5216 -- Sloc points to first token of library unit name
5218 -- Library_Unit (Node4-Sem)
5219 -- Corresponding_Spec (Node5-Sem)
5220 -- First_Name (Flag5) (set to True if first name or only one name)
5221 -- Last_Name (Flag6) (set to True if last name or only one name)
5222 -- Context_Installed (Flag13-Sem)
5223 -- Elaborate_Present (Flag4-Sem)
5224 -- Elaborate_All_Present (Flag14-Sem)
5225 -- Elaborate_All_Desirable (Flag9-Sem)
5226 -- Elaborate_Desirable (Flag11-Sem)
5227 -- Private_Present (Flag15) set if with_clause has private keyword
5228 -- Implicit_With (Flag16-Sem)
5229 -- Limited_Present (Flag17) set if LIMITED is present
5230 -- Limited_View_Installed (Flag18-Sem)
5231 -- Unreferenced_In_Spec (Flag7-Sem)
5232 -- No_Entities_Ref_In_Spec (Flag8-Sem)
5234 -- Note: Limited_Present and Limited_View_Installed give support to
5235 -- Ada 2005 (AI-50217).
5236 -- Similarly, Private_Present gives support to AI-50262.
5238 ----------------------
5239 -- With_Type clause --
5240 ----------------------
5242 -- This is a GNAT extension, used to implement mutually recursive
5243 -- types declared in different packages.
5245 -- WITH_TYPE_CLAUSE ::=
5246 -- with type type_NAME is access | with type type_NAME is tagged
5248 -- N_With_Type_Clause
5249 -- Sloc points to first token of type name
5251 -- Tagged_Present (Flag15)
5253 ---------------------
5254 -- 10.2 Body stub --
5255 ---------------------
5258 -- SUBPROGRAM_BODY_STUB
5259 -- | PACKAGE_BODY_STUB
5261 -- | PROTECTED_BODY_STUB
5263 ----------------------------------
5264 -- 10.1.3 Subprogram Body Stub --
5265 ----------------------------------
5267 -- SUBPROGRAM_BODY_STUB ::=
5268 -- SUBPROGRAM_SPECIFICATION is separate;
5270 -- N_Subprogram_Body_Stub
5271 -- Sloc points to FUNCTION or PROCEDURE
5272 -- Specification (Node1)
5273 -- Library_Unit (Node4-Sem) points to the subunit
5274 -- Corresponding_Body (Node5-Sem)
5276 -------------------------------
5277 -- 10.1.3 Package Body Stub --
5278 -------------------------------
5280 -- PACKAGE_BODY_STUB ::=
5281 -- package body DEFINING_IDENTIFIER is separate;
5283 -- N_Package_Body_Stub
5284 -- Sloc points to PACKAGE
5285 -- Defining_Identifier (Node1)
5286 -- Library_Unit (Node4-Sem) points to the subunit
5287 -- Corresponding_Body (Node5-Sem)
5289 ----------------------------
5290 -- 10.1.3 Task Body Stub --
5291 ----------------------------
5293 -- TASK_BODY_STUB ::=
5294 -- task body DEFINING_IDENTIFIER is separate;
5297 -- Sloc points to TASK
5298 -- Defining_Identifier (Node1)
5299 -- Library_Unit (Node4-Sem) points to the subunit
5300 -- Corresponding_Body (Node5-Sem)
5302 ---------------------------------
5303 -- 10.1.3 Protected Body Stub --
5304 ---------------------------------
5306 -- PROTECTED_BODY_STUB ::=
5307 -- protected body DEFINING_IDENTIFIER is separate;
5309 -- Note: protected body stubs are not allowed in Ada 83 mode
5311 -- N_Protected_Body_Stub
5312 -- Sloc points to PROTECTED
5313 -- Defining_Identifier (Node1)
5314 -- Library_Unit (Node4-Sem) points to the subunit
5315 -- Corresponding_Body (Node5-Sem)
5317 ---------------------
5318 -- 10.1.3 Subunit --
5319 ---------------------
5321 -- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
5324 -- Sloc points to SEPARATE
5325 -- Name (Node2) is the name of the parent unit
5326 -- Proper_Body (Node1) is the subunit body
5327 -- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
5329 ---------------------------------
5330 -- 11.1 Exception Declaration --
5331 ---------------------------------
5333 -- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception;
5335 -- For consistency with object declarations etc, the parser converts
5336 -- the case of multiple identifiers being declared to a series of
5337 -- declarations in which the expression is copied, using the More_Ids
5338 -- and Prev_Ids flags to remember the souce form as described in the
5339 -- section on "Handling of Defining Identifier Lists".
5341 -- N_Exception_Declaration
5342 -- Sloc points to EXCEPTION
5343 -- Defining_Identifier (Node1)
5344 -- Expression (Node3-Sem)
5345 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5346 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5348 ------------------------------------------
5349 -- 11.2 Handled Sequence Of Statements --
5350 ------------------------------------------
5352 -- HANDLED_SEQUENCE_OF_STATEMENTS ::=
5353 -- SEQUENCE_OF_STATEMENTS
5355 -- EXCEPTION_HANDLER
5356 -- {EXCEPTION_HANDLER}]
5358 -- cleanup_procedure_call (param, param, param, ...);]
5360 -- The AT END phrase is a GNAT extension to provide for cleanups. It is
5361 -- used only internally currently, but is considered to be syntactic.
5362 -- At the moment, the only cleanup action allowed is a single call to
5363 -- a parameterless procedure, and the Identifier field of the node is
5364 -- the procedure to be called. Also there is a current restriction
5365 -- that exception handles and a cleanup cannot be present in the same
5366 -- frame, so at least one of Exception_Handlers or the Identifier must
5369 -- Actually, more accurately, this restriction applies to the original
5370 -- source program. In the expanded tree, if the At_End_Proc field is
5371 -- present, then there will also be an exception handler of the form:
5373 -- when all others =>
5377 -- where cleanup is the procedure to be generated. The reason we do
5378 -- this is so that the front end can handle the necessary entries in
5379 -- the exception tables, and other exception handler actions required
5380 -- as part of the normal handling for exception handlers.
5382 -- The AT END cleanup handler protects only the sequence of statements
5383 -- (not the associated declarations of the parent), just like exception
5384 -- handlers. The big difference is that the cleanup procedure is called
5385 -- on either a normal or an abnormal exit from the statement sequence.
5387 -- Note: the list of Exception_Handlers can contain pragmas as well
5388 -- as actual handlers. In practice these pragmas can only occur at
5389 -- the start of the list, since any pragmas occurring later on will
5390 -- be included in the statement list of the corresponding handler.
5392 -- Note: although in the Ada syntax, the sequence of statements in
5393 -- a handled sequence of statements can only contain statements, we
5394 -- allow free mixing of declarations and statements in the resulting
5395 -- expanded tree. This is for example used to deal with the case of
5396 -- a cleanup procedure that must handle declarations as well as the
5397 -- statements of a block.
5399 -- N_Handled_Sequence_Of_Statements
5400 -- Sloc points to first token of first statement
5401 -- Statements (List3)
5402 -- End_Label (Node4) (set to Empty if expander generated)
5403 -- Exception_Handlers (List5) (set to No_List if none present)
5404 -- At_End_Proc (Node1) (set to Empty if no clean up procedure)
5405 -- First_Real_Statement (Node2-Sem)
5406 -- Zero_Cost_Handling (Flag5-Sem)
5408 -- Note: the parent always contains a Declarations field which contains
5409 -- declarations associated with the handled sequence of statements. This
5410 -- is true even in the case of an accept statement (see description of
5411 -- the N_Accept_Statement node).
5413 -- End_Label refers to the containing construct
5415 -----------------------------
5416 -- 11.2 Exception Handler --
5417 -----------------------------
5419 -- EXCEPTION_HANDLER ::=
5420 -- when [CHOICE_PARAMETER_SPECIFICATION :]
5421 -- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
5422 -- SEQUENCE_OF_STATEMENTS
5424 -- Note: choice parameter specification is not allowed in Ada 83 mode
5426 -- N_Exception_Handler
5427 -- Sloc points to WHEN
5428 -- Choice_Parameter (Node2) (set to Empty if not present)
5429 -- Exception_Choices (List4)
5430 -- Statements (List3)
5431 -- Zero_Cost_Handling (Flag5-Sem)
5433 ------------------------------------------
5434 -- 11.2 Choice parameter specification --
5435 ------------------------------------------
5437 -- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
5439 ----------------------------
5440 -- 11.2 Exception Choice --
5441 ----------------------------
5443 -- EXCEPTION_CHOICE ::= exception_NAME | others
5445 -- Except in the case of OTHERS, no explicit node appears in the tree
5446 -- for exception choice. Instead the exception name appears directly.
5447 -- An OTHERS choice is represented by a N_Others_Choice node (see
5450 -- Note: for the exception choice created for an at end handler, the
5451 -- exception choice is an N_Others_Choice node with All_Others set.
5453 ---------------------------
5454 -- 11.3 Raise Statement --
5455 ---------------------------
5457 -- RAISE_STATEMENT ::= raise [exception_NAME];
5459 -- In Ada 2005, we have
5461 -- RAISE_STATEMENT ::= raise; | raise exception_NAME [with EXPRESSION];
5463 -- N_Raise_Statement
5464 -- Sloc points to RAISE
5465 -- Name (Node2) (set to Empty if no exception name present)
5466 -- Expression (Node3) (set to Empty if no expression present)
5468 -------------------------------
5469 -- 12.1 Generic Declaration --
5470 -------------------------------
5472 -- GENERIC_DECLARATION ::=
5473 -- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
5475 ------------------------------------------
5476 -- 12.1 Generic Subprogram Declaration --
5477 ------------------------------------------
5479 -- GENERIC_SUBPROGRAM_DECLARATION ::=
5480 -- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION;
5482 -- Note: Generic_Formal_Declarations can include pragmas
5484 -- N_Generic_Subprogram_Declaration
5485 -- Sloc points to GENERIC
5486 -- Specification (Node1) subprogram specification
5487 -- Corresponding_Body (Node5-Sem)
5488 -- Generic_Formal_Declarations (List2) from generic formal part
5489 -- Parent_Spec (Node4-Sem)
5491 ---------------------------------------
5492 -- 12.1 Generic Package Declaration --
5493 ---------------------------------------
5495 -- GENERIC_PACKAGE_DECLARATION ::=
5496 -- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION;
5498 -- Note: when we do generics right, the Activation_Chain_Entity entry
5499 -- for this node can be removed (since the expander won't see generic
5500 -- units any more)???.
5502 -- Note: Generic_Formal_Declarations can include pragmas
5504 -- N_Generic_Package_Declaration
5505 -- Sloc points to GENERIC
5506 -- Specification (Node1) package specification
5507 -- Corresponding_Body (Node5-Sem)
5508 -- Generic_Formal_Declarations (List2) from generic formal part
5509 -- Parent_Spec (Node4-Sem)
5510 -- Activation_Chain_Entity (Node3-Sem)
5512 -------------------------------
5513 -- 12.1 Generic Formal Part --
5514 -------------------------------
5516 -- GENERIC_FORMAL_PART ::=
5517 -- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
5519 ------------------------------------------------
5520 -- 12.1 Generic Formal Parameter Declaration --
5521 ------------------------------------------------
5523 -- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
5524 -- FORMAL_OBJECT_DECLARATION
5525 -- | FORMAL_TYPE_DECLARATION
5526 -- | FORMAL_SUBPROGRAM_DECLARATION
5527 -- | FORMAL_PACKAGE_DECLARATION
5529 ---------------------------------
5530 -- 12.3 Generic Instantiation --
5531 ---------------------------------
5533 -- GENERIC_INSTANTIATION ::=
5534 -- package DEFINING_PROGRAM_UNIT_NAME is
5535 -- new generic_package_NAME [GENERIC_ACTUAL_PART];
5536 -- | [[not] overriding]
5537 -- procedure DEFINING_PROGRAM_UNIT_NAME is
5538 -- new generic_procedure_NAME [GENERIC_ACTUAL_PART];
5539 -- | [[not] overriding]
5540 -- function DEFINING_DESIGNATOR is
5541 -- new generic_function_NAME [GENERIC_ACTUAL_PART];
5543 -- N_Package_Instantiation
5544 -- Sloc points to PACKAGE
5545 -- Defining_Unit_Name (Node1)
5547 -- Generic_Associations (List3) (set to No_List if no
5548 -- generic actual part)
5549 -- Parent_Spec (Node4-Sem)
5550 -- Instance_Spec (Node5-Sem)
5551 -- ABE_Is_Certain (Flag18-Sem)
5553 -- N_Procedure_Instantiation
5554 -- Sloc points to PROCEDURE
5555 -- Defining_Unit_Name (Node1)
5557 -- Parent_Spec (Node4-Sem)
5558 -- Generic_Associations (List3) (set to No_List if no
5559 -- generic actual part)
5560 -- Instance_Spec (Node5-Sem)
5561 -- Must_Override (Flag14) set if overriding indicator present
5562 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5563 -- ABE_Is_Certain (Flag18-Sem)
5565 -- N_Function_Instantiation
5566 -- Sloc points to FUNCTION
5567 -- Defining_Unit_Name (Node1)
5569 -- Generic_Associations (List3) (set to No_List if no
5570 -- generic actual part)
5571 -- Parent_Spec (Node4-Sem)
5572 -- Instance_Spec (Node5-Sem)
5573 -- Must_Override (Flag14) set if overriding indicator present
5574 -- Must_Not_Override (Flag15) set if not_overriding indicator present
5575 -- ABE_Is_Certain (Flag18-Sem)
5577 -- Note: overriding indicator is an Ada 2005 feature
5579 ------------------------------
5580 -- 12.3 Generic Actual Part --
5581 ------------------------------
5583 -- GENERIC_ACTUAL_PART ::=
5584 -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
5586 -------------------------------
5587 -- 12.3 Generic Association --
5588 -------------------------------
5590 -- GENERIC_ASSOCIATION ::=
5591 -- [generic_formal_parameter_SELECTOR_NAME =>]
5592 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER
5594 -- Note: unlike the procedure call case, a generic association node
5595 -- is generated for every association, even if no formal is present.
5596 -- In this case the parser will leave the Selector_Name field set
5597 -- to Empty, to be filled in later by the semantic pass.
5599 -- N_Generic_Association
5600 -- Sloc points to first token of generic association
5601 -- Selector_Name (Node2) (set to Empty if no formal
5602 -- parameter selector name)
5603 -- Explicit_Generic_Actual_Parameter (Node1)
5605 ---------------------------------------------
5606 -- 12.3 Explicit Generic Actual Parameter --
5607 ---------------------------------------------
5609 -- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
5610 -- EXPRESSION | variable_NAME | subprogram_NAME
5611 -- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
5613 -------------------------------------
5614 -- 12.4 Formal Object Declaration --
5615 -------------------------------------
5617 -- FORMAL_OBJECT_DECLARATION ::=
5618 -- DEFINING_IDENTIFIER_LIST :
5619 -- MODE SUBTYPE_MARK [:= DEFAULT_EXPRESSION];
5621 -- Although the syntax allows multiple identifiers in the list, the
5622 -- semantics is as though successive declarations were given with
5623 -- identical type definition and expression components. To simplify
5624 -- semantic processing, the parser represents a multiple declaration
5625 -- case as a sequence of single declarations, using the More_Ids and
5626 -- Prev_Ids flags to preserve the original source form as described
5627 -- in the section on "Handling of Defining Identifier Lists".
5629 -- N_Formal_Object_Declaration
5630 -- Sloc points to first identifier
5631 -- Defining_Identifier (Node1)
5632 -- In_Present (Flag15)
5633 -- Out_Present (Flag17)
5634 -- Subtype_Mark (Node4)
5635 -- Expression (Node3) (set to Empty if no default expression)
5636 -- More_Ids (Flag5) (set to False if no more identifiers in list)
5637 -- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
5639 -----------------------------------
5640 -- 12.5 Formal Type Declaration --
5641 -----------------------------------
5643 -- FORMAL_TYPE_DECLARATION ::=
5644 -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
5645 -- is FORMAL_TYPE_DEFINITION;
5647 -- N_Formal_Type_Declaration
5648 -- Sloc points to TYPE
5649 -- Defining_Identifier (Node1)
5650 -- Formal_Type_Definition (Node3)
5651 -- Discriminant_Specifications (List4) (set to No_List if no
5652 -- discriminant part)
5653 -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
5655 ----------------------------------
5656 -- 12.5 Formal type definition --
5657 ----------------------------------
5659 -- FORMAL_TYPE_DEFINITION ::=
5660 -- FORMAL_PRIVATE_TYPE_DEFINITION
5661 -- | FORMAL_DERIVED_TYPE_DEFINITION
5662 -- | FORMAL_DISCRETE_TYPE_DEFINITION
5663 -- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
5664 -- | FORMAL_MODULAR_TYPE_DEFINITION
5665 -- | FORMAL_FLOATING_POINT_DEFINITION
5666 -- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
5667 -- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
5668 -- | FORMAL_ARRAY_TYPE_DEFINITION
5669 -- | FORMAL_ACCESS_TYPE_DEFINITION
5670 -- | FORMAL_INTERFACE_TYPE_DEFINITION
5672 ---------------------------------------------
5673 -- 12.5.1 Formal Private Type Definition --
5674 ---------------------------------------------
5676 -- FORMAL_PRIVATE_TYPE_DEFINITION ::=
5677 -- [[abstract] tagged] [limited] private
5679 -- Note: TAGGED is not allowed in Ada 83 mode
5681 -- N_Formal_Private_Type_Definition
5682 -- Sloc points to PRIVATE
5683 -- Abstract_Present (Flag4)
5684 -- Tagged_Present (Flag15)
5685 -- Limited_Present (Flag17)
5687 --------------------------------------------
5688 -- 12.5.1 Formal Derived Type Definition --
5689 --------------------------------------------
5691 -- FORMAL_DERIVED_TYPE_DEFINITION ::=
5692 -- [abstract] [limited]
5693 -- new SUBTYPE_MARK [[and INTERFACE_LIST] with private]
5694 -- Note: this construct is not allowed in Ada 83 mode
5696 -- N_Formal_Derived_Type_Definition
5697 -- Sloc points to NEW
5698 -- Subtype_Mark (Node4)
5699 -- Private_Present (Flag15)
5700 -- Abstract_Present (Flag4)
5701 -- Limited_Present (Flag17)
5702 -- Interface_List (List2) (set to No_List if none)
5704 ---------------------------------------------
5705 -- 12.5.2 Formal Discrete Type Definition --
5706 ---------------------------------------------
5708 -- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
5710 -- N_Formal_Discrete_Type_Definition
5713 ---------------------------------------------------
5714 -- 12.5.2 Formal Signed Integer Type Definition --
5715 ---------------------------------------------------
5717 -- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
5719 -- N_Formal_Signed_Integer_Type_Definition
5720 -- Sloc points to RANGE
5722 --------------------------------------------
5723 -- 12.5.2 Formal Modular Type Definition --
5724 --------------------------------------------
5726 -- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
5728 -- N_Formal_Modular_Type_Definition
5729 -- Sloc points to MOD
5731 ----------------------------------------------
5732 -- 12.5.2 Formal Floating Point Definition --
5733 ----------------------------------------------
5735 -- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
5737 -- N_Formal_Floating_Point_Definition
5738 -- Sloc points to DIGITS
5740 ----------------------------------------------------
5741 -- 12.5.2 Formal Ordinary Fixed Point Definition --
5742 ----------------------------------------------------
5744 -- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
5746 -- N_Formal_Ordinary_Fixed_Point_Definition
5747 -- Sloc points to DELTA
5749 ---------------------------------------------------
5750 -- 12.5.2 Formal Decimal Fixed Point Definition --
5751 ---------------------------------------------------
5753 -- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
5755 -- Note: formal decimal fixed point definition not allowed in Ada 83
5757 -- N_Formal_Decimal_Fixed_Point_Definition
5758 -- Sloc points to DELTA
5760 ------------------------------------------
5761 -- 12.5.3 Formal Array Type Definition --
5762 ------------------------------------------
5764 -- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
5766 -------------------------------------------
5767 -- 12.5.4 Formal Access Type Definition --
5768 -------------------------------------------
5770 -- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
5772 ----------------------------------------------
5773 -- 12.5.5 Formal Interface Type Definition --
5774 ----------------------------------------------
5776 -- FORMAL_INTERFACE_TYPE_DEFINITION ::= INTERFACE_TYPE_DEFINITION
5778 -----------------------------------------
5779 -- 12.6 Formal Subprogram Declaration --
5780 -----------------------------------------
5782 -- FORMAL_SUBPROGRAM_DECLARATION ::=
5783 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION
5784 -- | FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION
5786 --------------------------------------------------
5787 -- 12.6 Formal Concrete Subprogram Declaration --
5788 --------------------------------------------------
5790 -- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION ::=
5791 -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT];
5793 -- N_Formal_Concrete_Subprogram_Declaration
5794 -- Sloc points to WITH
5795 -- Specification (Node1)
5796 -- Default_Name (Node2) (set to Empty if no subprogram default)
5797 -- Box_Present (Flag15)
5799 -- Note: if no subprogram default is present, then Name is set
5800 -- to Empty, and Box_Present is False.
5802 --------------------------------------------------
5803 -- 12.6 Formal Abstract Subprogram Declaration --
5804 --------------------------------------------------
5806 -- FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION ::=
5807 -- with SUBPROGRAM_SPECIFICATION is abstract [SUBPROGRAM_DEFAULT];
5809 -- N_Formal_Abstract_Subprogram_Declaration
5810 -- Sloc points to WITH
5811 -- Specification (Node1)
5812 -- Default_Name (Node2) (set to Empty if no subprogram default)
5813 -- Box_Present (Flag15)
5815 -- Note: if no subprogram default is present, then Name is set
5816 -- to Empty, and Box_Present is False.
5818 ------------------------------
5819 -- 12.6 Subprogram Default --
5820 ------------------------------
5822 -- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
5824 -- There is no separate node in the tree for a subprogram default.
5825 -- Instead the parent (N_Formal_Concrete_Subprogram_Declaration
5826 -- or N_Formal_Abstract_Subprogram_Declaration) node contains the
5827 -- default name or box indication, as needed.
5829 ------------------------
5830 -- 12.6 Default Name --
5831 ------------------------
5833 -- DEFAULT_NAME ::= NAME
5835 --------------------------------------
5836 -- 12.7 Formal Package Declaration --
5837 --------------------------------------
5839 -- FORMAL_PACKAGE_DECLARATION ::=
5840 -- with package DEFINING_IDENTIFIER
5841 -- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART;
5843 -- Note: formal package declarations not allowed in Ada 83 mode
5845 -- N_Formal_Package_Declaration
5846 -- Sloc points to WITH
5847 -- Defining_Identifier (Node1)
5849 -- Generic_Associations (List3) (set to No_List if (<>) case or
5850 -- empty generic actual part)
5851 -- Box_Present (Flag15)
5852 -- Instance_Spec (Node5-Sem)
5853 -- ABE_Is_Certain (Flag18-Sem)
5855 --------------------------------------
5856 -- 12.7 Formal Package Actual Part --
5857 --------------------------------------
5859 -- FORMAL_PACKAGE_ACTUAL_PART ::=
5860 -- (<>) | [GENERIC_ACTUAL_PART]
5862 -- There is no explicit node in the tree for a formal package
5863 -- actual part. Instead the information appears in the parent node
5864 -- (i.e. the formal package declaration node itself).
5866 ---------------------------------
5867 -- 13.1 Representation clause --
5868 ---------------------------------
5870 -- REPRESENTATION_CLAUSE ::=
5871 -- ATTRIBUTE_DEFINITION_CLAUSE
5872 -- | ENUMERATION_REPRESENTATION_CLAUSE
5873 -- | RECORD_REPRESENTATION_CLAUSE
5876 ----------------------
5877 -- 13.1 Local Name --
5878 ----------------------
5882 -- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
5883 -- | library_unit_NAME
5885 -- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
5886 -- as an attribute reference, which has essentially the same form.
5888 ---------------------------------------
5889 -- 13.3 Attribute definition clause --
5890 ---------------------------------------
5892 -- ATTRIBUTE_DEFINITION_CLAUSE ::=
5893 -- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
5894 -- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
5896 -- In Ada 83, the expression must be a simple expression and the
5897 -- local name must be a direct name.
5899 -- Note: the only attribute definition clause that is processed by
5900 -- gigi is an address clause. For all other cases, the information
5901 -- is extracted by the front end and either results in setting entity
5902 -- information, e.g. Esize for the Size clause, or in appropriate
5903 -- expansion actions (e.g. in the case of Storage_Size).
5905 -- For an address clause, Gigi constructs the appropriate addressing
5906 -- code. It also ensures that no aliasing optimizations are made
5907 -- for the object for which the address clause appears.
5909 -- Note: for an address clause used to achieve an overlay:
5913 -- for B'Address use A'Address;
5915 -- the above rule means that Gigi will ensure that no optimizations
5916 -- will be made for B that would violate the implementation advice
5917 -- of RM 13.3(19). However, this advice applies only to B and not
5918 -- to A, which seems unfortunate. The GNAT front end will mark the
5919 -- object A as volatile to also prevent unwanted optimization
5920 -- assumptions based on no aliasing being made for B.
5922 -- N_Attribute_Definition_Clause
5923 -- Sloc points to FOR
5924 -- Name (Node2) the local name
5925 -- Chars (Name1) the identifier name from the attribute designator
5926 -- Expression (Node3) the expression or name
5927 -- Next_Rep_Item (Node4-Sem)
5928 -- From_At_Mod (Flag4-Sem)
5929 -- Check_Address_Alignment (Flag11-Sem)
5931 ---------------------------------------------
5932 -- 13.4 Enumeration representation clause --
5933 ---------------------------------------------
5935 -- ENUMERATION_REPRESENTATION_CLAUSE ::=
5936 -- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
5938 -- In Ada 83, the name must be a direct name
5940 -- N_Enumeration_Representation_Clause
5941 -- Sloc points to FOR
5942 -- Identifier (Node1) direct name
5943 -- Array_Aggregate (Node3)
5944 -- Next_Rep_Item (Node4-Sem)
5946 ---------------------------------
5947 -- 13.4 Enumeration aggregate --
5948 ---------------------------------
5950 -- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
5952 ------------------------------------------
5953 -- 13.5.1 Record representation clause --
5954 ------------------------------------------
5956 -- RECORD_REPRESENTATION_CLAUSE ::=
5957 -- for first_subtype_LOCAL_NAME use
5958 -- record [MOD_CLAUSE]
5959 -- {COMPONENT_CLAUSE}
5962 -- Gigi restriction: Mod_Clause is always Empty (if present it is
5963 -- replaced by a corresponding Alignment attribute definition clause).
5965 -- Note: Component_Clauses can include pragmas
5967 -- N_Record_Representation_Clause
5968 -- Sloc points to FOR
5969 -- Identifier (Node1) direct name
5970 -- Mod_Clause (Node2) (set to Empty if no mod clause present)
5971 -- Component_Clauses (List3)
5972 -- Next_Rep_Item (Node4-Sem)
5974 ------------------------------
5975 -- 13.5.1 Component clause --
5976 ------------------------------
5978 -- COMPONENT_CLAUSE ::=
5979 -- component_LOCAL_NAME at POSITION
5980 -- range FIRST_BIT .. LAST_BIT;
5982 -- N_Component_Clause
5983 -- Sloc points to AT
5984 -- Component_Name (Node1) points to Name or Attribute_Reference
5986 -- First_Bit (Node3)
5989 ----------------------
5990 -- 13.5.1 Position --
5991 ----------------------
5993 -- POSITION ::= static_EXPRESSION
5995 -----------------------
5996 -- 13.5.1 First_Bit --
5997 -----------------------
5999 -- FIRST_BIT ::= static_SIMPLE_EXPRESSION
6001 ----------------------
6002 -- 13.5.1 Last_Bit --
6003 ----------------------
6005 -- LAST_BIT ::= static_SIMPLE_EXPRESSION
6007 --------------------------
6008 -- 13.8 Code statement --
6009 --------------------------
6011 -- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
6013 -- Note: in GNAT, the qualified expression has the form
6015 -- Asm_Insn'(Asm (...));
6019 -- Asm_Insn'(Asm_Volatile (...))
6021 -- See package System.Machine_Code in file s-maccod.ads for details
6022 -- on the allowed parameters to Asm[_Volatile]. There are two ways
6023 -- this node can arise, as a code statement, in which case the
6024 -- expression is the qualified expression, or as a result of the
6025 -- expansion of an intrinsic call to the Asm or Asm_Input procedure.
6028 -- Sloc points to first token of the expression
6029 -- Expression (Node3)
6031 -- Note: package Exp_Code contains an abstract functional interface
6032 -- for use by Gigi in accessing the data from N_Code_Statement nodes.
6034 ------------------------
6035 -- 13.12 Restriction --
6036 ------------------------
6039 -- restriction_IDENTIFIER
6040 -- | restriction_parameter_IDENTIFIER => EXPRESSION
6042 -- There is no explicit node for restrictions. Instead the restriction
6043 -- appears in normal pragma syntax as a pragma argument association,
6044 -- which has the same syntactic form.
6046 --------------------------
6047 -- B.2 Shift Operators --
6048 --------------------------
6050 -- Calls to the intrinsic shift functions are converted to one of
6051 -- the following shift nodes, which have the form of normal binary
6052 -- operator names. Note that for a given shift operation, one node
6053 -- covers all possible types, as for normal operators.
6055 -- Note: it is perfectly permissible for the expander to generate
6056 -- shift operation nodes directly, in which case they will be analyzed
6057 -- and parsed in the usual manner.
6059 -- Sprint syntax: shift-function-name!(expr, count)
6061 -- Note: the Left_Opnd field holds the first argument (the value to
6062 -- be shifted). The Right_Opnd field holds the second argument (the
6063 -- shift count). The Chars field is the name of the intrinsic function.
6066 -- Sloc points to the function name
6067 -- plus fields for binary operator
6068 -- plus fields for expression
6069 -- Shift_Count_OK (Flag4-Sem)
6071 -- N_Op_Rotate_Right
6072 -- Sloc points to the function name
6073 -- plus fields for binary operator
6074 -- plus fields for expression
6075 -- Shift_Count_OK (Flag4-Sem)
6078 -- Sloc points to the function name
6079 -- plus fields for binary operator
6080 -- plus fields for expression
6081 -- Shift_Count_OK (Flag4-Sem)
6083 -- N_Op_Shift_Right_Arithmetic
6084 -- Sloc points to the function name
6085 -- plus fields for binary operator
6086 -- plus fields for expression
6087 -- Shift_Count_OK (Flag4-Sem)
6090 -- Sloc points to the function name
6091 -- plus fields for binary operator
6092 -- plus fields for expression
6093 -- Shift_Count_OK (Flag4-Sem)
6095 --------------------------
6096 -- Obsolescent Features --
6097 --------------------------
6099 -- The syntax descriptions and tree nodes for obsolescent features are
6100 -- grouped together, corresponding to their location in appendix I in
6101 -- the RM. However, parsing and semantic analysis for these constructs
6102 -- is located in an appropriate chapter (see individual notes).
6104 ---------------------------
6105 -- J.3 Delta Constraint --
6106 ---------------------------
6108 -- Note: the parse routine for this construct is located in section
6109 -- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
6110 -- where delta constraint logically belongs.
6112 -- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
6114 -- N_Delta_Constraint
6115 -- Sloc points to DELTA
6116 -- Delta_Expression (Node3)
6117 -- Range_Constraint (Node4) (set to Empty if not present)
6119 --------------------
6121 --------------------
6123 -- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
6125 -- Note: the parse routine for this construct is located in Par-Ch13,
6126 -- and the semantic analysis is in Sem_Ch13, where at clause logically
6127 -- belongs if it were not obsolescent.
6129 -- Note: in Ada 83 the expression must be a simple expression
6131 -- Gigi restriction: This node never appears, it is rewritten as an
6132 -- address attribute definition clause.
6135 -- Sloc points to FOR
6136 -- Identifier (Node1)
6137 -- Expression (Node3)
6139 ---------------------
6140 -- J.8 Mod clause --
6141 ---------------------
6143 -- MOD_CLAUSE ::= at mod static_EXPRESSION;
6145 -- Note: the parse routine for this construct is located in Par-Ch13,
6146 -- and the semantic analysis is in Sem_Ch13, where mod clause logically
6147 -- belongs if it were not obsolescent.
6149 -- Note: in Ada 83, the expression must be a simple expression
6151 -- Gigi restriction: this node never appears. It is replaced
6152 -- by a corresponding Alignment attribute definition clause.
6154 -- Note: pragmas can appear before and after the MOD_CLAUSE since
6155 -- its name has "clause" in it. This is rather strange, but is quite
6156 -- definitely specified. The pragmas before are collected in the
6157 -- Pragmas_Before field of the mod clause node itself, and pragmas
6158 -- after are simply swallowed up in the list of component clauses.
6161 -- Sloc points to AT
6162 -- Expression (Node3)
6163 -- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
6165 --------------------
6166 -- Semantic Nodes --
6167 --------------------
6169 -- These semantic nodes are used to hold additional semantic information.
6170 -- They are inserted into the tree as a result of semantic processing.
6171 -- Although there are no legitimate source syntax constructions that
6172 -- correspond directly to these nodes, we need a source syntax for the
6173 -- reconstructed tree printed by Sprint, and the node descriptions here
6174 -- show this syntax.
6176 ----------------------------
6177 -- Conditional Expression --
6178 ----------------------------
6180 -- This node is used to represent an expression corresponding to the
6181 -- C construct (condition ? then-expression : else_expression), where
6182 -- Expressions is a three element list, whose first expression is the
6183 -- condition, and whose second and third expressions are the then and
6184 -- else expressions respectively.
6186 -- Note: the Then_Actions and Else_Actions fields are always set to
6187 -- No_List in the tree passed to Gigi. These fields are used only
6188 -- for temporary processing purposes in the expander.
6190 -- Sprint syntax: (if expr then expr else expr)
6192 -- N_Conditional_Expression
6193 -- Sloc points to related node
6194 -- Expressions (List1)
6195 -- Then_Actions (List2-Sem)
6196 -- Else_Actions (List3-Sem)
6197 -- plus fields for expression
6199 -- Note: in the case where a debug source file is generated, the Sloc
6200 -- for this node points to the IF keyword in the Sprint file output.
6206 -- The N_Expanded_Name node is used to represent a selected component
6207 -- name that has been resolved to an expanded name. The semantic phase
6208 -- replaces N_Selected_Component nodes that represent names by the use
6209 -- of this node, leaving the N_Selected_Component node used only when
6210 -- the prefix is a record or protected type.
6212 -- The fields of the N_Expanded_Name node are layed out identically
6213 -- to those of the N_Selected_Component node, allowing conversion of
6214 -- an expanded name node to a selected component node to be done
6215 -- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
6217 -- There is no special sprint syntax for an expanded name
6220 -- Sloc points to the period
6221 -- Chars (Name1) copy of Chars field of selector name
6223 -- Selector_Name (Node2)
6224 -- Entity (Node4-Sem)
6225 -- Associated_Node (Node4-Sem)
6226 -- Redundant_Use (Flag13-Sem)
6227 -- Has_Private_View (Flag11-Sem) set in generic units.
6228 -- plus fields for expression
6230 --------------------
6231 -- Free Statement --
6232 --------------------
6234 -- The N_Free_Statement node is generated as a result of a call to an
6235 -- instantiation of Unchecked_Deallocation. The instantiation of this
6236 -- generic is handled specially and generates this node directly.
6238 -- Sprint syntax: free expression
6241 -- Sloc is copied from the unchecked deallocation call
6242 -- Expression (Node3) argument to unchecked deallocation call
6243 -- Storage_Pool (Node1-Sem)
6244 -- Procedure_To_Call (Node4-Sem)
6245 -- Actual_Designated_Subtype (Node2-Sem)
6247 -- Note: in the case where a debug source file is generated, the Sloc
6248 -- for this node points to the FREE keyword in the Sprint file output.
6254 -- This node marks the point in a declarative part at which an entity
6255 -- declared therein becomes frozen. The expander places initialization
6256 -- procedures for types at those points. Gigi uses the freezing point
6257 -- to elaborate entities that may depend on previous private types.
6259 -- See the section in Einfo "Delayed Freezing and Elaboration" for
6260 -- a full description of the use of this node.
6262 -- The Entity field points back to the entity for the type (whose
6263 -- Freeze_Node field points back to this freeze node).
6265 -- The Actions field contains a list of declarations and statements
6266 -- generated by the expander which are associated with the freeze
6267 -- node, and are elaborated as though the freeze node were replaced
6268 -- by this sequence of actions.
6270 -- Note: the Sloc field in the freeze node references a construct
6271 -- associated with the freezing point. This is used for posting
6272 -- messages in some error/warning situations, e.g. the case where
6273 -- a primitive operation of a tagged type is declared too late.
6275 -- Sprint syntax: freeze entity-name [
6280 -- Sloc points near freeze point (see above special note)
6281 -- Entity (Node4-Sem)
6282 -- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
6283 -- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
6284 -- Actions (List1) (set to No_List if no freeze actions)
6285 -- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
6287 -- The Actions field holds actions associated with the freeze. These
6288 -- actions are elaborated at the point where the type is frozen.
6290 -- Note: in the case where a debug source file is generated, the Sloc
6291 -- for this node points to the FREEZE keyword in the Sprint file output.
6293 --------------------------------
6294 -- Implicit Label Declaration --
6295 --------------------------------
6297 -- An implicit label declaration is created for every occurrence of a
6298 -- label on a statement or a label on a block or loop. It is chained
6299 -- in the declarations of the innermost enclosing block as specified
6300 -- in RM section 5.1 (3).
6302 -- The Defining_Identifier is the actual identifier for the
6303 -- statement identifier. Note that the occurrence of the label
6304 -- is a reference, NOT the defining occurrence. The defining
6305 -- occurrence occurs at the head of the innermost enclosing
6306 -- block, and is represented by this node.
6308 -- Note: from the grammar, this might better be called an implicit
6309 -- statement identifier declaration, but the term we choose seems
6310 -- friendlier, since at least informally statement identifiers are
6311 -- called labels in both cases (i.e. when used in labels, and when
6312 -- used as the identifiers of blocks and loops).
6314 -- Note: although this is logically a semantic node, since it does
6315 -- not correspond directly to a source syntax construction, these
6316 -- nodes are actually created by the parser in a post pass done just
6317 -- after parsing is complete, before semantic analysis is started (see
6318 -- the Par.Labl subunit in file par-labl.adb).
6320 -- Sprint syntax: labelname : label;
6322 -- N_Implicit_Label_Declaration
6323 -- Sloc points to the << of the label
6324 -- Defining_Identifier (Node1)
6325 -- Label_Construct (Node2-Sem)
6327 -- Note: in the case where a debug source file is generated, the Sloc
6328 -- for this node points to the label name in the generated declaration.
6330 ---------------------
6331 -- Itype_Reference --
6332 ---------------------
6334 -- This node is used to create a reference to an Itype. The only
6335 -- purpose is to make sure that the Itype is defined if this is the
6338 -- A typical use of this node is when an Itype is to be referenced in
6339 -- two branches of an if statement. In this case it is important that
6340 -- the first use of the Itype not be inside the conditional, since
6341 -- then it might not be defined if the wrong branch of the if is
6342 -- taken in the case where the definition generates elaboration code.
6344 -- The Itype field points to the referenced Itype
6346 -- sprint syntax: reference itype-name
6348 -- N_Itype_Reference
6349 -- Sloc points to the node generating the reference
6350 -- Itype (Node1-Sem)
6352 -- Note: in the case where a debug source file is generated, the Sloc
6353 -- for this node points to the REFERENCE keyword in the file output.
6355 ---------------------
6356 -- Raise_xxx_Error --
6357 ---------------------
6359 -- One of these nodes is created during semantic analysis to replace
6360 -- a node for an expression that is determined to definitely raise
6361 -- the corresponding exception.
6363 -- The N_Raise_xxx_Error node may also stand alone in place
6364 -- of a declaration or statement, in which case it simply causes
6365 -- the exception to be raised (i.e. it is equivalent to a raise
6366 -- statement that raises the corresponding exception). This use
6367 -- is distinguished by the fact that the Etype in this case is
6368 -- Standard_Void_Type, In the subexprssion case, the Etype is the
6369 -- same as the type of the subexpression which it replaces.
6371 -- If Condition is empty, then the raise is unconditional. If the
6372 -- Condition field is non-empty, it is a boolean expression which
6373 -- is first evaluated, and the exception is raised only if the
6374 -- value of the expression is True. In the unconditional case, the
6375 -- creation of this node is usually accompanied by a warning message
6376 -- error. The creation of this node will usually be accompanied by a
6377 -- message (unless it appears within the right operand of a short
6378 -- circuit form whose left argument is static and decisively
6379 -- eliminates elaboration of the raise operation.
6381 -- The exception is generated with a message that contains the
6382 -- file name and line number, and then appended text. The Reason
6383 -- code shows the text to be added. The Reason code is an element
6384 -- of the type Types.RT_Exception_Code, and indicates both the
6385 -- message to be added, and the exception to be raised (which must
6386 -- match the node type). The value is stored by storing a Uint which
6387 -- is the Pos value of the enumeration element in this type.
6389 -- Gigi restriction: This expander ensures that the type of the
6390 -- Condition field is always Standard.Boolean, even if the type
6391 -- in the source is some non-standard boolean type.
6393 -- Sprint syntax: [xxx_error "msg"]
6394 -- or: [xxx_error when condition "msg"]
6396 -- N_Raise_Constraint_Error
6397 -- Sloc references related construct
6398 -- Condition (Node1) (set to Empty if no condition)
6400 -- plus fields for expression
6402 -- N_Raise_Program_Error
6403 -- Sloc references related construct
6404 -- Condition (Node1) (set to Empty if no condition)
6406 -- plus fields for expression
6408 -- N_Raise_Storage_Error
6409 -- Sloc references related construct
6410 -- Condition (Node1) (set to Empty if no condition)
6412 -- plus fields for expression
6414 -- Note: Sloc is copied from the expression generating the exception.
6415 -- In the case where a debug source file is generated, the Sloc for
6416 -- this node points to the left bracket in the Sprint file output.
6422 -- For a number of purposes, we need to construct references to objects.
6423 -- These references are subsequently treated as normal access values.
6424 -- An example is the construction of the parameter block passed to a
6425 -- task entry. The N_Reference node is provided for this purpose. It is
6426 -- similar in effect to the use of the Unrestricted_Access attribute,
6427 -- and like Unrestricted_Access can be applied to objects which would
6428 -- not be valid prefixes for the Unchecked_Access attribute (e.g.
6429 -- objects which are not aliased, and slices). In addition it can be
6430 -- applied to composite type values as well as objects, including string
6431 -- values and aggregates.
6433 -- Note: we use the Prefix field for this expression so that the
6434 -- resulting node can be treated using common code with the attribute
6435 -- nodes for the 'Access and related attributes. Logically it would make
6436 -- more sense to call it an Expression field, but then we would have to
6437 -- special case the treatment of the N_Reference node.
6439 -- Sprint syntax: prefix'reference
6442 -- Sloc is copied from the expression
6444 -- plus fields for expression
6446 -- Note: in the case where a debug source file is generated, the Sloc
6447 -- for this node points to the quote in the Sprint file output.
6449 ---------------------
6450 -- Subprogram_Info --
6451 ---------------------
6453 -- This node generates the appropriate Subprogram_Info value for a
6454 -- given procedure. See Ada.Exceptions for further details
6456 -- Sprint syntax: subprog'subprogram_info
6458 -- N_Subprogram_Info
6459 -- Sloc points to the entity for the procedure
6460 -- Identifier (Node1) identifier referencing the procedure
6461 -- Etype (Node5-Sem) type (always set to Ada.Exceptions.Code_Loc
6463 -- Note: in the case where a debug source file is generated, the Sloc
6464 -- for this node points to the quote in the Sprint file output.
6466 --------------------------
6467 -- Unchecked Expression --
6468 --------------------------
6470 -- An unchecked expression is one that must be analyzed and resolved
6471 -- with all checks off, regardless of the current setting of scope
6474 -- Sprint syntax: `(expression)
6476 -- Note: this node is always removed from the tree (and replaced by
6477 -- its constituent expression) on completion of analysis, so it only
6478 -- appears in intermediate trees, and will never be seen by Gigi.
6480 -- N_Unchecked_Expression
6481 -- Sloc is a copy of the Sloc of the expression
6482 -- Expression (Node3)
6483 -- plus fields for expression
6485 -- Note: in the case where a debug source file is generated, the Sloc
6486 -- for this node points to the back quote in the Sprint file output.
6488 -------------------------------
6489 -- Unchecked Type Conversion --
6490 -------------------------------
6492 -- An unchecked type conversion node represents the semantic action
6493 -- corresponding to a call to an instantiation of Unchecked_Conversion.
6494 -- It is generated as a result of actual use of Unchecked_Conversion
6495 -- and also the expander generates unchecked type conversion nodes
6496 -- directly for expansion of complex semantic actions.
6498 -- Note: an unchecked type conversion is a variable as far as the
6499 -- semantics are concerned, which is convenient for the expander.
6500 -- This does not change what Ada source programs are legal, since
6501 -- clearly a function call to an instantiation of Unchecked_Conversion
6502 -- is not a variable in any case.
6504 -- Sprint syntax: subtype-mark!(expression)
6506 -- N_Unchecked_Type_Conversion
6507 -- Sloc points to related node in source
6508 -- Subtype_Mark (Node4)
6509 -- Expression (Node3)
6510 -- Kill_Range_Check (Flag11-Sem)
6511 -- No_Truncation (Flag17-Sem)
6512 -- plus fields for expression
6514 -- Note: in the case where a debug source file is generated, the Sloc
6515 -- for this node points to the exclamation in the Sprint file output.
6517 -----------------------------------
6518 -- Validate_Unchecked_Conversion --
6519 -----------------------------------
6521 -- The front end does most of the validation of unchecked conversion,
6522 -- including checking sizes (this is done after the back end is called
6523 -- to take advantage of back-annotation of calculated sizes).
6525 -- The front end also deals with specific cases that are not allowed
6526 -- e.g. involving unconstrained array types.
6528 -- For the case of the standard gigi backend, this means that all
6529 -- checks are done in the front-end.
6531 -- However, in the case of specialized back-ends, notably the JVM
6532 -- backend for JGNAT, additional requirements and restrictions apply
6533 -- to unchecked conversion, and these are most conveniently performed
6534 -- in the specialized back-end.
6536 -- To accommodate this requirement, for such back ends, the following
6537 -- special node is generated recording an unchecked conversion that
6538 -- needs to be validated. The back end should post an appropriate
6539 -- error message if the unchecked conversion is invalid or warrants
6540 -- a special warning message.
6542 -- Source_Type and Target_Type point to the entities for the two
6543 -- types involved in the unchecked conversion instantiation that
6544 -- is to be validated.
6546 -- Sprint syntax: validate Unchecked_Conversion (source, target);
6548 -- N_Validate_Unchecked_Conversion
6549 -- Sloc points to instantiation (location for warning message)
6550 -- Source_Type (Node1-Sem)
6551 -- Target_Type (Node2-Sem)
6553 -- Note: in the case where a debug source file is generated, the Sloc
6554 -- for this node points to the VALIDATE keyword in the file output.
6560 -- Used as the contents of the Nkind field of the dummy Empty node
6561 -- and in some other situations to indicate an uninitialized value.
6564 -- Chars (Name1) is set to No_Name
6570 -- Used as the contents of the Nkind field of the dummy Error node.
6571 -- Has an Etype field, which gets set to Any_Type later on, to help
6572 -- error recovery (Error_Posted is also set in the Error node).
6575 -- Chars (Name1) is set to Error_Name
6576 -- Etype (Node5-Sem)
6578 --------------------------
6579 -- Node Type Definition --
6580 --------------------------
6582 -- The following is the definition of the Node_Kind type. As previously
6583 -- discussed, this is separated off to allow rearrangement of the order
6584 -- to facilitiate definition of subtype ranges. The comments show the
6585 -- subtype classes which apply to each set of node kinds. The first
6586 -- entry in the comment characterizes the following list of nodes.
6591 -- N_Representation_Clause
6595 N_Enumeration_Representation_Clause,
6597 N_Record_Representation_Clause,
6599 -- N_Representation_Clause, N_Has_Chars
6601 N_Attribute_Definition_Clause,
6607 N_Pragma_Argument_Association,
6613 -- N_Entity, N_Has_Etype, N_Has_Chars
6615 N_Defining_Character_Literal,
6616 N_Defining_Identifier,
6617 N_Defining_Operator_Symbol,
6619 -- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
6623 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6624 -- N_Has_Chars, N_Has_Entity
6629 -- N_Direct_Name, N_Subexpr, N_Has_Etype,
6630 -- N_Has_Chars, N_Has_Entity
6632 N_Character_Literal,
6634 -- N_Binary_Op, N_Op, N_Subexpr,
6635 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6642 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
6643 -- N_Has_Etype, N_Has_Chars, N_Has_Entity
6650 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6651 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6655 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6656 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean, N_Op_Compare
6665 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
6666 -- N_Has_Entity, N_Has_Chars, N_Op_Boolean
6671 -- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
6672 -- N_Op_Shift, N_Has_Chars, N_Has_Entity
6678 N_Op_Shift_Right_Arithmetic,
6680 -- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
6681 -- N_Has_Chars, N_Has_Entity
6688 -- N_Subexpr, N_Has_Etype, N_Has_Entity
6690 N_Attribute_Reference,
6692 -- N_Subexpr, N_Has_Etype
6695 N_Conditional_Expression,
6696 N_Explicit_Dereference,
6699 N_Indexed_Component,
6704 N_Procedure_Call_Statement,
6705 N_Qualified_Expression,
6707 -- N_Raise_xxx_Error, N_Subexpr, N_Has_Etype
6709 N_Raise_Constraint_Error,
6710 N_Raise_Program_Error,
6711 N_Raise_Storage_Error,
6713 -- N_Subexpr, N_Has_Etype
6717 N_Extension_Aggregate,
6721 N_Selected_Component,
6726 N_Unchecked_Expression,
6727 N_Unchecked_Type_Conversion,
6731 N_Subtype_Indication,
6735 N_Component_Declaration,
6736 N_Entry_Declaration,
6737 N_Formal_Object_Declaration,
6738 N_Formal_Type_Declaration,
6739 N_Full_Type_Declaration,
6740 N_Incomplete_Type_Declaration,
6741 N_Loop_Parameter_Specification,
6742 N_Object_Declaration,
6743 N_Protected_Type_Declaration,
6744 N_Private_Extension_Declaration,
6745 N_Private_Type_Declaration,
6746 N_Subtype_Declaration,
6748 -- N_Subprogram_Specification, N_Declaration
6750 N_Function_Specification,
6751 N_Procedure_Specification,
6753 -- N_Access_To_Subprogram_Definition
6755 N_Access_Function_Definition,
6756 N_Access_Procedure_Definition,
6758 -- N_Later_Decl_Item
6760 N_Task_Type_Declaration,
6762 -- N_Body_Stub, N_Later_Decl_Item
6764 N_Package_Body_Stub,
6765 N_Protected_Body_Stub,
6766 N_Subprogram_Body_Stub,
6769 -- N_Generic_Instantiation, N_Later_Decl_Item
6770 -- N_Subprogram_Instantiation
6772 N_Function_Instantiation,
6773 N_Procedure_Instantiation,
6775 -- N_Generic_Instantiation, N_Later_Decl_Item
6777 N_Package_Instantiation,
6779 -- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
6784 -- N_Later_Decl_Item, N_Proper_Body
6789 -- N_Later_Decl_Item
6791 N_Implicit_Label_Declaration,
6792 N_Package_Declaration,
6793 N_Single_Task_Declaration,
6794 N_Subprogram_Declaration,
6795 N_Use_Package_Clause,
6797 -- N_Generic_Declaration, N_Later_Decl_Item
6799 N_Generic_Package_Declaration,
6800 N_Generic_Subprogram_Declaration,
6802 -- N_Array_Type_Definition
6804 N_Constrained_Array_Definition,
6805 N_Unconstrained_Array_Definition,
6807 -- N_Renaming_Declaration
6809 N_Exception_Renaming_Declaration,
6810 N_Object_Renaming_Declaration,
6811 N_Package_Renaming_Declaration,
6812 N_Subprogram_Renaming_Declaration,
6814 -- N_Generic_Renaming_Declaration, N_Renaming_Declaration
6816 N_Generic_Function_Renaming_Declaration,
6817 N_Generic_Package_Renaming_Declaration,
6818 N_Generic_Procedure_Renaming_Declaration,
6820 -- N_Statement_Other_Than_Procedure_Call
6824 N_Assignment_Statement,
6825 N_Asynchronous_Select,
6829 N_Conditional_Entry_Call,
6831 -- N_Statement_Other_Than_Procedure_Call. N_Delay_Statement
6833 N_Delay_Relative_Statement,
6834 N_Delay_Until_Statement,
6836 -- N_Statement_Other_Than_Procedure_Call
6838 N_Entry_Call_Statement,
6844 N_Requeue_Statement,
6849 -- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
6856 N_Accept_Alternative,
6857 N_Delay_Alternative,
6859 N_Entry_Body_Formal_Part,
6861 N_Terminate_Alternative,
6863 -- N_Formal_Subprogram_Declaration
6865 N_Formal_Abstract_Subprogram_Declaration,
6866 N_Formal_Concrete_Subprogram_Declaration,
6868 -- Other nodes (not part of any subtype class)
6871 N_Abstract_Subprogram_Declaration,
6872 N_Access_Definition,
6873 N_Access_To_Object_Definition,
6874 N_Case_Statement_Alternative,
6876 N_Compilation_Unit_Aux,
6877 N_Component_Association,
6878 N_Component_Definition,
6880 N_Derived_Type_Definition,
6881 N_Decimal_Fixed_Point_Definition,
6882 N_Defining_Program_Unit_Name,
6885 N_Digits_Constraint,
6886 N_Discriminant_Association,
6887 N_Discriminant_Specification,
6888 N_Enumeration_Type_Definition,
6890 N_Entry_Call_Alternative,
6891 N_Entry_Index_Specification,
6892 N_Exception_Declaration,
6893 N_Exception_Handler,
6894 N_Floating_Point_Definition,
6895 N_Formal_Decimal_Fixed_Point_Definition,
6896 N_Formal_Derived_Type_Definition,
6897 N_Formal_Discrete_Type_Definition,
6898 N_Formal_Floating_Point_Definition,
6899 N_Formal_Modular_Type_Definition,
6900 N_Formal_Ordinary_Fixed_Point_Definition,
6901 N_Formal_Package_Declaration,
6902 N_Formal_Private_Type_Definition,
6903 N_Formal_Signed_Integer_Type_Definition,
6905 N_Generic_Association,
6906 N_Handled_Sequence_Of_Statements,
6907 N_Index_Or_Discriminant_Constraint,
6910 N_Modular_Type_Definition,
6911 N_Number_Declaration,
6912 N_Ordinary_Fixed_Point_Definition,
6914 N_Package_Specification,
6915 N_Parameter_Association,
6916 N_Parameter_Specification,
6917 N_Protected_Definition,
6919 N_Real_Range_Specification,
6920 N_Record_Definition,
6921 N_Signed_Integer_Type_Definition,
6922 N_Single_Protected_Declaration,
6925 N_Triggering_Alternative,
6927 N_Validate_Unchecked_Conversion,
6934 for Node_Kind'Size use 8;
6935 -- The data structures in Atree assume this!
6937 ----------------------------
6938 -- Node Class Definitions --
6939 ----------------------------
6941 subtype N_Access_To_Subprogram_Definition is Node_Kind range
6942 N_Access_Function_Definition ..
6943 N_Access_Procedure_Definition;
6945 subtype N_Array_Type_Definition is Node_Kind range
6946 N_Constrained_Array_Definition ..
6947 N_Unconstrained_Array_Definition;
6949 subtype N_Binary_Op is Node_Kind range
6951 N_Op_Shift_Right_Arithmetic;
6953 subtype N_Body_Stub is Node_Kind range
6954 N_Package_Body_Stub ..
6957 subtype N_Declaration is Node_Kind range
6958 N_Component_Declaration ..
6959 N_Procedure_Specification;
6960 -- Note: this includes all constructs normally thought of as declarations
6961 -- except those which are separately grouped as later declarations.
6963 subtype N_Delay_Statement is Node_Kind range
6964 N_Delay_Relative_Statement ..
6965 N_Delay_Until_Statement;
6967 subtype N_Direct_Name is Node_Kind range
6969 N_Character_Literal;
6971 subtype N_Entity is Node_Kind range
6972 N_Defining_Character_Literal ..
6973 N_Defining_Operator_Symbol;
6975 subtype N_Formal_Subprogram_Declaration is Node_Kind range
6976 N_Formal_Abstract_Subprogram_Declaration ..
6977 N_Formal_Concrete_Subprogram_Declaration;
6979 subtype N_Generic_Declaration is Node_Kind range
6980 N_Generic_Package_Declaration ..
6981 N_Generic_Subprogram_Declaration;
6983 subtype N_Generic_Instantiation is Node_Kind range
6984 N_Function_Instantiation ..
6985 N_Package_Instantiation;
6987 subtype N_Generic_Renaming_Declaration is Node_Kind range
6988 N_Generic_Function_Renaming_Declaration ..
6989 N_Generic_Procedure_Renaming_Declaration;
6991 subtype N_Has_Chars is Node_Kind range
6992 N_Attribute_Definition_Clause ..
6995 subtype N_Has_Entity is Node_Kind range
6997 N_Attribute_Reference;
6998 -- Nodes that have Entity fields
6999 -- Warning: DOES NOT INCLUDE N_Freeze_Entity!
7001 subtype N_Has_Etype is Node_Kind range
7003 N_Subtype_Indication;
7005 subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
7009 subtype N_Later_Decl_Item is Node_Kind range
7010 N_Task_Type_Declaration ..
7011 N_Generic_Subprogram_Declaration;
7012 -- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and
7013 -- includes only those items which can appear as later declarative
7014 -- items. This also includes N_Implicit_Label_Declaration which is
7015 -- not specifically in the grammar but may appear as a valid later
7016 -- declarative items. It does NOT include N_Pragma which can also
7017 -- appear among later declarative items. It does however include
7018 -- N_Protected_Body, which is a bit peculiar, but harmless since
7019 -- this cannot appear in Ada 83 mode anyway.
7021 subtype N_Op is Node_Kind range
7025 subtype N_Op_Boolean is Node_Kind range
7028 -- Binary operators which take operands of a boolean type, and yield
7029 -- a result of a boolean type.
7031 subtype N_Op_Compare is Node_Kind range
7035 subtype N_Op_Shift is Node_Kind range
7037 N_Op_Shift_Right_Arithmetic;
7039 subtype N_Proper_Body is Node_Kind range
7043 subtype N_Raise_xxx_Error is Node_Kind range
7044 N_Raise_Constraint_Error ..
7045 N_Raise_Storage_Error;
7047 subtype N_Renaming_Declaration is Node_Kind range
7048 N_Exception_Renaming_Declaration ..
7049 N_Generic_Procedure_Renaming_Declaration;
7051 subtype N_Representation_Clause is Node_Kind range
7053 N_Attribute_Definition_Clause;
7055 subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
7056 N_Abort_Statement ..
7058 -- Note that this includes all statement types except for the cases of the
7059 -- N_Procedure_Call_Statement which is considered to be a subexpression
7060 -- (since overloading is possible, so it needs to go through the normal
7061 -- overloading resolution for expressions).
7063 subtype N_Subprogram_Instantiation is Node_Kind range
7064 N_Function_Instantiation ..
7065 N_Procedure_Instantiation;
7067 subtype N_Has_Condition is Node_Kind range
7069 N_Terminate_Alternative;
7070 -- Nodes with condition fields (does not include N_Raise_xxx_Error)
7072 subtype N_Subexpr is Node_Kind range
7074 N_Unchecked_Type_Conversion;
7075 -- Nodes with expression fields
7077 subtype N_Subprogram_Specification is Node_Kind range
7078 N_Function_Specification ..
7079 N_Procedure_Specification;
7081 subtype N_Unary_Op is Node_Kind range
7085 subtype N_Unit_Body is Node_Kind range
7089 ---------------------------
7090 -- Node Access Functions --
7091 ---------------------------
7093 -- The following functions return the contents of the indicated field of
7094 -- the node referenced by the argument, which is a Node_Id. They provide
7095 -- logical access to fields in the node which could be accessed using the
7096 -- Atree.Unchecked_Access package, but the idea is always to use these
7097 -- higher level routines which preserve strong typing. In debug mode,
7098 -- these routines check that they are being applied to an appropriate
7099 -- node, as well as checking that the node is in range.
7101 function ABE_Is_Certain
7102 (N : Node_Id) return Boolean; -- Flag18
7104 function Abort_Present
7105 (N : Node_Id) return Boolean; -- Flag15
7107 function Abortable_Part
7108 (N : Node_Id) return Node_Id; -- Node2
7110 function Abstract_Present
7111 (N : Node_Id) return Boolean; -- Flag4
7113 function Accept_Handler_Records
7114 (N : Node_Id) return List_Id; -- List5
7116 function Accept_Statement
7117 (N : Node_Id) return Node_Id; -- Node2
7119 function Access_Definition
7120 (N : Node_Id) return Node_Id; -- Node3
7122 function Access_To_Subprogram_Definition
7123 (N : Node_Id) return Node_Id; -- Node3
7125 function Access_Types_To_Process
7126 (N : Node_Id) return Elist_Id; -- Elist2
7129 (N : Node_Id) return List_Id; -- List1
7131 function Activation_Chain_Entity
7132 (N : Node_Id) return Node_Id; -- Node3
7134 function Acts_As_Spec
7135 (N : Node_Id) return Boolean; -- Flag4
7137 function Actual_Designated_Subtype
7138 (N : Node_Id) return Node_Id; -- Node2
7140 function Aggregate_Bounds
7141 (N : Node_Id) return Node_Id; -- Node3
7143 function Aliased_Present
7144 (N : Node_Id) return Boolean; -- Flag4
7147 (N : Node_Id) return Boolean; -- Flag11
7149 function All_Present
7150 (N : Node_Id) return Boolean; -- Flag15
7152 function Alternatives
7153 (N : Node_Id) return List_Id; -- List4
7155 function Ancestor_Part
7156 (N : Node_Id) return Node_Id; -- Node3
7158 function Array_Aggregate
7159 (N : Node_Id) return Node_Id; -- Node3
7161 function Assignment_OK
7162 (N : Node_Id) return Boolean; -- Flag15
7164 function Associated_Node
7165 (N : Node_Id) return Node_Id; -- Node4
7167 function At_End_Proc
7168 (N : Node_Id) return Node_Id; -- Node1
7170 function Attribute_Name
7171 (N : Node_Id) return Name_Id; -- Name2
7173 function Aux_Decls_Node
7174 (N : Node_Id) return Node_Id; -- Node5
7176 function Backwards_OK
7177 (N : Node_Id) return Boolean; -- Flag6
7179 function Bad_Is_Detected
7180 (N : Node_Id) return Boolean; -- Flag15
7183 (N : Node_Id) return Boolean; -- Flag5
7185 function Body_Required
7186 (N : Node_Id) return Boolean; -- Flag13
7188 function Body_To_Inline
7189 (N : Node_Id) return Node_Id; -- Node3
7191 function Box_Present
7192 (N : Node_Id) return Boolean; -- Flag15
7194 function Char_Literal_Value
7195 (N : Node_Id) return Uint; -- Uint2
7198 (N : Node_Id) return Name_Id; -- Name1
7200 function Check_Address_Alignment
7201 (N : Node_Id) return Boolean; -- Flag11
7203 function Choice_Parameter
7204 (N : Node_Id) return Node_Id; -- Node2
7207 (N : Node_Id) return List_Id; -- List1
7209 function Compile_Time_Known_Aggregate
7210 (N : Node_Id) return Boolean; -- Flag18
7212 function Component_Associations
7213 (N : Node_Id) return List_Id; -- List2
7215 function Component_Clauses
7216 (N : Node_Id) return List_Id; -- List3
7218 function Component_Definition
7219 (N : Node_Id) return Node_Id; -- Node4
7221 function Component_Items
7222 (N : Node_Id) return List_Id; -- List3
7224 function Component_List
7225 (N : Node_Id) return Node_Id; -- Node1
7227 function Component_Name
7228 (N : Node_Id) return Node_Id; -- Node1
7231 (N : Node_Id) return Node_Id; -- Node1
7233 function Condition_Actions
7234 (N : Node_Id) return List_Id; -- List3
7236 function Config_Pragmas
7237 (N : Node_Id) return List_Id; -- List4
7239 function Constant_Present
7240 (N : Node_Id) return Boolean; -- Flag17
7243 (N : Node_Id) return Node_Id; -- Node3
7245 function Constraints
7246 (N : Node_Id) return List_Id; -- List1
7248 function Context_Installed
7249 (N : Node_Id) return Boolean; -- Flag13
7251 function Context_Items
7252 (N : Node_Id) return List_Id; -- List1
7254 function Controlling_Argument
7255 (N : Node_Id) return Node_Id; -- Node1
7257 function Conversion_OK
7258 (N : Node_Id) return Boolean; -- Flag14
7260 function Corresponding_Body
7261 (N : Node_Id) return Node_Id; -- Node5
7263 function Corresponding_Formal_Spec
7264 (N : Node_Id) return Node_Id; -- Node3
7266 function Corresponding_Generic_Association
7267 (N : Node_Id) return Node_Id; -- Node5
7269 function Corresponding_Integer_Value
7270 (N : Node_Id) return Uint; -- Uint4
7272 function Corresponding_Spec
7273 (N : Node_Id) return Node_Id; -- Node5
7275 function Corresponding_Stub
7276 (N : Node_Id) return Node_Id; -- Node3
7278 function Dcheck_Function
7279 (N : Node_Id) return Entity_Id; -- Node5
7281 function Debug_Statement
7282 (N : Node_Id) return Node_Id; -- Node3
7284 function Declarations
7285 (N : Node_Id) return List_Id; -- List2
7287 function Default_Expression
7288 (N : Node_Id) return Node_Id; -- Node5
7290 function Default_Name
7291 (N : Node_Id) return Node_Id; -- Node2
7293 function Defining_Identifier
7294 (N : Node_Id) return Entity_Id; -- Node1
7296 function Defining_Unit_Name
7297 (N : Node_Id) return Node_Id; -- Node1
7299 function Delay_Alternative
7300 (N : Node_Id) return Node_Id; -- Node4
7302 function Delay_Finalize_Attach
7303 (N : Node_Id) return Boolean; -- Flag14
7305 function Delay_Statement
7306 (N : Node_Id) return Node_Id; -- Node2
7308 function Delta_Expression
7309 (N : Node_Id) return Node_Id; -- Node3
7311 function Digits_Expression
7312 (N : Node_Id) return Node_Id; -- Node2
7314 function Discr_Check_Funcs_Built
7315 (N : Node_Id) return Boolean; -- Flag11
7317 function Discrete_Choices
7318 (N : Node_Id) return List_Id; -- List4
7320 function Discrete_Range
7321 (N : Node_Id) return Node_Id; -- Node4
7323 function Discrete_Subtype_Definition
7324 (N : Node_Id) return Node_Id; -- Node4
7326 function Discrete_Subtype_Definitions
7327 (N : Node_Id) return List_Id; -- List2
7329 function Discriminant_Specifications
7330 (N : Node_Id) return List_Id; -- List4
7332 function Discriminant_Type
7333 (N : Node_Id) return Node_Id; -- Node5
7335 function Do_Accessibility_Check
7336 (N : Node_Id) return Boolean; -- Flag13
7338 function Do_Discriminant_Check
7339 (N : Node_Id) return Boolean; -- Flag13
7341 function Do_Division_Check
7342 (N : Node_Id) return Boolean; -- Flag13
7344 function Do_Length_Check
7345 (N : Node_Id) return Boolean; -- Flag4
7347 function Do_Overflow_Check
7348 (N : Node_Id) return Boolean; -- Flag17
7350 function Do_Range_Check
7351 (N : Node_Id) return Boolean; -- Flag9
7353 function Do_Storage_Check
7354 (N : Node_Id) return Boolean; -- Flag17
7356 function Do_Tag_Check
7357 (N : Node_Id) return Boolean; -- Flag13
7359 function Elaborate_All_Desirable
7360 (N : Node_Id) return Boolean; -- Flag9
7362 function Elaborate_All_Present
7363 (N : Node_Id) return Boolean; -- Flag14
7365 function Elaborate_Desirable
7366 (N : Node_Id) return Boolean; -- Flag11
7368 function Elaborate_Present
7369 (N : Node_Id) return Boolean; -- Flag4
7371 function Elaboration_Boolean
7372 (N : Node_Id) return Node_Id; -- Node2
7374 function Else_Actions
7375 (N : Node_Id) return List_Id; -- List3
7377 function Else_Statements
7378 (N : Node_Id) return List_Id; -- List4
7380 function Elsif_Parts
7381 (N : Node_Id) return List_Id; -- List3
7383 function Enclosing_Variant
7384 (N : Node_Id) return Node_Id; -- Node2
7387 (N : Node_Id) return Node_Id; -- Node4
7390 (N : Node_Id) return Uint; -- Uint5
7393 (N : Node_Id) return Node_Id; -- Node4
7395 function Entity_Or_Associated_Node
7396 (N : Node_Id) return Node_Id; -- Node4
7398 function Entry_Body_Formal_Part
7399 (N : Node_Id) return Node_Id; -- Node5
7401 function Entry_Call_Alternative
7402 (N : Node_Id) return Node_Id; -- Node1
7404 function Entry_Call_Statement
7405 (N : Node_Id) return Node_Id; -- Node1
7407 function Entry_Direct_Name
7408 (N : Node_Id) return Node_Id; -- Node1
7410 function Entry_Index
7411 (N : Node_Id) return Node_Id; -- Node5
7413 function Entry_Index_Specification
7414 (N : Node_Id) return Node_Id; -- Node4
7417 (N : Node_Id) return Node_Id; -- Node5
7419 function Exception_Choices
7420 (N : Node_Id) return List_Id; -- List4
7422 function Exception_Handlers
7423 (N : Node_Id) return List_Id; -- List5
7425 function Exception_Junk
7426 (N : Node_Id) return Boolean; -- Flag7
7428 function Explicit_Actual_Parameter
7429 (N : Node_Id) return Node_Id; -- Node3
7431 function Expansion_Delayed
7432 (N : Node_Id) return Boolean; -- Flag11
7434 function Explicit_Generic_Actual_Parameter
7435 (N : Node_Id) return Node_Id; -- Node1
7438 (N : Node_Id) return Node_Id; -- Node3
7440 function Expressions
7441 (N : Node_Id) return List_Id; -- List1
7444 (N : Node_Id) return Node_Id; -- Node3
7446 function First_Inlined_Subprogram
7447 (N : Node_Id) return Entity_Id; -- Node3
7450 (N : Node_Id) return Boolean; -- Flag5
7452 function First_Named_Actual
7453 (N : Node_Id) return Node_Id; -- Node4
7455 function First_Real_Statement
7456 (N : Node_Id) return Node_Id; -- Node2
7458 function First_Subtype_Link
7459 (N : Node_Id) return Entity_Id; -- Node5
7461 function Float_Truncate
7462 (N : Node_Id) return Boolean; -- Flag11
7464 function Formal_Type_Definition
7465 (N : Node_Id) return Node_Id; -- Node3
7467 function Forwards_OK
7468 (N : Node_Id) return Boolean; -- Flag5
7470 function From_At_Mod
7471 (N : Node_Id) return Boolean; -- Flag4
7473 function From_Default
7474 (N : Node_Id) return Boolean; -- Flag6
7476 function Generic_Associations
7477 (N : Node_Id) return List_Id; -- List3
7479 function Generic_Formal_Declarations
7480 (N : Node_Id) return List_Id; -- List2
7482 function Generic_Parent
7483 (N : Node_Id) return Node_Id; -- Node5
7485 function Generic_Parent_Type
7486 (N : Node_Id) return Node_Id; -- Node4
7488 function Handled_Statement_Sequence
7489 (N : Node_Id) return Node_Id; -- Node4
7491 function Handler_List_Entry
7492 (N : Node_Id) return Node_Id; -- Node2
7494 function Has_Created_Identifier
7495 (N : Node_Id) return Boolean; -- Flag15
7497 function Has_Dynamic_Length_Check
7498 (N : Node_Id) return Boolean; -- Flag10
7500 function Has_Dynamic_Range_Check
7501 (N : Node_Id) return Boolean; -- Flag12
7503 function Has_No_Elaboration_Code
7504 (N : Node_Id) return Boolean; -- Flag17
7506 function Has_Priority_Pragma
7507 (N : Node_Id) return Boolean; -- Flag6
7509 function Has_Private_View
7510 (N : Node_Id) return Boolean; -- Flag11
7512 function Has_Storage_Size_Pragma
7513 (N : Node_Id) return Boolean; -- Flag5
7515 function Has_Task_Info_Pragma
7516 (N : Node_Id) return Boolean; -- Flag7
7518 function Has_Task_Name_Pragma
7519 (N : Node_Id) return Boolean; -- Flag8
7521 function Has_Wide_Character
7522 (N : Node_Id) return Boolean; -- Flag11
7524 function Hidden_By_Use_Clause
7525 (N : Node_Id) return Elist_Id; -- Elist4
7528 (N : Node_Id) return Node_Id; -- Node2
7531 (N : Node_Id) return Node_Id; -- Node1
7533 function Interface_List
7534 (N : Node_Id) return List_Id; -- List2
7536 function Interface_Present
7537 (N : Node_Id) return Boolean; -- Flag16
7539 function Implicit_With
7540 (N : Node_Id) return Boolean; -- Flag16
7543 (N : Node_Id) return Boolean; -- Flag15
7545 function Includes_Infinities
7546 (N : Node_Id) return Boolean; -- Flag11
7548 function Instance_Spec
7549 (N : Node_Id) return Node_Id; -- Node5
7552 (N : Node_Id) return Uint; -- Uint3
7554 function Is_Asynchronous_Call_Block
7555 (N : Node_Id) return Boolean; -- Flag7
7557 function Is_Component_Left_Opnd
7558 (N : Node_Id) return Boolean; -- Flag13
7560 function Is_Component_Right_Opnd
7561 (N : Node_Id) return Boolean; -- Flag14
7563 function Is_Controlling_Actual
7564 (N : Node_Id) return Boolean; -- Flag16
7566 function Is_In_Discriminant_Check
7567 (N : Node_Id) return Boolean; -- Flag11
7569 function Is_Machine_Number
7570 (N : Node_Id) return Boolean; -- Flag11
7572 function Is_Null_Loop
7573 (N : Node_Id) return Boolean; -- Flag16
7575 function Is_Overloaded
7576 (N : Node_Id) return Boolean; -- Flag5
7578 function Is_Power_Of_2_For_Shift
7579 (N : Node_Id) return Boolean; -- Flag13
7581 function Is_Protected_Subprogram_Body
7582 (N : Node_Id) return Boolean; -- Flag7
7584 function Is_Static_Expression
7585 (N : Node_Id) return Boolean; -- Flag6
7587 function Is_Subprogram_Descriptor
7588 (N : Node_Id) return Boolean; -- Flag16
7590 function Is_Task_Allocation_Block
7591 (N : Node_Id) return Boolean; -- Flag6
7593 function Is_Task_Master
7594 (N : Node_Id) return Boolean; -- Flag5
7596 function Iteration_Scheme
7597 (N : Node_Id) return Node_Id; -- Node2
7600 (N : Node_Id) return Entity_Id; -- Node1
7602 function Kill_Range_Check
7603 (N : Node_Id) return Boolean; -- Flag11
7605 function Label_Construct
7606 (N : Node_Id) return Node_Id; -- Node2
7609 (N : Node_Id) return Node_Id; -- Node2
7612 (N : Node_Id) return Node_Id; -- Node4
7615 (N : Node_Id) return Boolean; -- Flag6
7617 function Library_Unit
7618 (N : Node_Id) return Node_Id; -- Node4
7620 function Limited_View_Installed
7621 (N : Node_Id) return Boolean; -- Flag18
7623 function Limited_Present
7624 (N : Node_Id) return Boolean; -- Flag17
7627 (N : Node_Id) return List_Id; -- List1
7629 function Loop_Actions
7630 (N : Node_Id) return List_Id; -- List2
7632 function Loop_Parameter_Specification
7633 (N : Node_Id) return Node_Id; -- Node4
7636 (N : Node_Id) return Node_Id; -- Node1
7639 (N : Node_Id) return Node_Id; -- Node2
7642 (N : Node_Id) return Boolean; -- Flag5
7644 function Must_Be_Byte_Aligned
7645 (N : Node_Id) return Boolean; -- Flag14
7647 function Must_Not_Freeze
7648 (N : Node_Id) return Boolean; -- Flag8
7650 function Must_Not_Override
7651 (N : Node_Id) return Boolean; -- Flag15
7653 function Must_Override
7654 (N : Node_Id) return Boolean; -- Flag14
7657 (N : Node_Id) return Node_Id; -- Node2
7660 (N : Node_Id) return List_Id; -- List2
7662 function Next_Entity
7663 (N : Node_Id) return Node_Id; -- Node2
7665 function Next_Named_Actual
7666 (N : Node_Id) return Node_Id; -- Node4
7668 function Next_Rep_Item
7669 (N : Node_Id) return Node_Id; -- Node4
7671 function Next_Use_Clause
7672 (N : Node_Id) return Node_Id; -- Node3
7674 function No_Ctrl_Actions
7675 (N : Node_Id) return Boolean; -- Flag7
7677 function No_Elaboration_Check
7678 (N : Node_Id) return Boolean; -- Flag14
7680 function No_Entities_Ref_In_Spec
7681 (N : Node_Id) return Boolean; -- Flag8
7683 function No_Initialization
7684 (N : Node_Id) return Boolean; -- Flag13
7686 function No_Truncation
7687 (N : Node_Id) return Boolean; -- Flag17
7689 function Null_Present
7690 (N : Node_Id) return Boolean; -- Flag13
7692 function Null_Exclusion_Present
7693 (N : Node_Id) return Boolean; -- Flag11
7695 function Null_Record_Present
7696 (N : Node_Id) return Boolean; -- Flag17
7698 function Object_Definition
7699 (N : Node_Id) return Node_Id; -- Node4
7701 function Original_Discriminant
7702 (N : Node_Id) return Node_Id; -- Node2
7704 function Original_Entity
7705 (N : Node_Id) return Entity_Id; -- Node2
7707 function Others_Discrete_Choices
7708 (N : Node_Id) return List_Id; -- List1
7710 function Out_Present
7711 (N : Node_Id) return Boolean; -- Flag17
7713 function Parameter_Associations
7714 (N : Node_Id) return List_Id; -- List3
7716 function Parameter_List_Truncated
7717 (N : Node_Id) return Boolean; -- Flag17
7719 function Parameter_Specifications
7720 (N : Node_Id) return List_Id; -- List3
7722 function Parameter_Type
7723 (N : Node_Id) return Node_Id; -- Node2
7725 function Parent_Spec
7726 (N : Node_Id) return Node_Id; -- Node4
7729 (N : Node_Id) return Node_Id; -- Node2
7731 function Pragma_Argument_Associations
7732 (N : Node_Id) return List_Id; -- List2
7734 function Pragmas_After
7735 (N : Node_Id) return List_Id; -- List5
7737 function Pragmas_Before
7738 (N : Node_Id) return List_Id; -- List4
7741 (N : Node_Id) return Node_Id; -- Node3
7743 function Present_Expr
7744 (N : Node_Id) return Uint; -- Uint3
7747 (N : Node_Id) return Boolean; -- Flag6
7749 function Print_In_Hex
7750 (N : Node_Id) return Boolean; -- Flag13
7752 function Private_Declarations
7753 (N : Node_Id) return List_Id; -- List3
7755 function Private_Present
7756 (N : Node_Id) return Boolean; -- Flag15
7758 function Procedure_To_Call
7759 (N : Node_Id) return Node_Id; -- Node4
7761 function Proper_Body
7762 (N : Node_Id) return Node_Id; -- Node1
7764 function Protected_Definition
7765 (N : Node_Id) return Node_Id; -- Node3
7767 function Protected_Present
7768 (N : Node_Id) return Boolean; -- Flag6
7770 function Raises_Constraint_Error
7771 (N : Node_Id) return Boolean; -- Flag7
7773 function Range_Constraint
7774 (N : Node_Id) return Node_Id; -- Node4
7776 function Range_Expression
7777 (N : Node_Id) return Node_Id; -- Node4
7779 function Real_Range_Specification
7780 (N : Node_Id) return Node_Id; -- Node4
7783 (N : Node_Id) return Ureal; -- Ureal3
7786 (N : Node_Id) return Uint; -- Uint3
7788 function Record_Extension_Part
7789 (N : Node_Id) return Node_Id; -- Node3
7791 function Redundant_Use
7792 (N : Node_Id) return Boolean; -- Flag13
7794 function Result_Definition
7795 (N : Node_Id) return Node_Id; -- Node4
7797 function Return_Type
7798 (N : Node_Id) return Node_Id; -- Node2
7800 function Reverse_Present
7801 (N : Node_Id) return Boolean; -- Flag15
7804 (N : Node_Id) return Node_Id; -- Node3
7806 function Rounded_Result
7807 (N : Node_Id) return Boolean; -- Flag18
7810 (N : Node_Id) return Node_Id; -- Node3
7812 function Select_Alternatives
7813 (N : Node_Id) return List_Id; -- List1
7815 function Selector_Name
7816 (N : Node_Id) return Node_Id; -- Node2
7818 function Selector_Names
7819 (N : Node_Id) return List_Id; -- List1
7821 function Shift_Count_OK
7822 (N : Node_Id) return Boolean; -- Flag4
7824 function Source_Type
7825 (N : Node_Id) return Entity_Id; -- Node1
7827 function Specification
7828 (N : Node_Id) return Node_Id; -- Node1
7831 (N : Node_Id) return List_Id; -- List3
7833 function Static_Processing_OK
7834 (N : Node_Id) return Boolean; -- Flag4
7836 function Storage_Pool
7837 (N : Node_Id) return Node_Id; -- Node1
7840 (N : Node_Id) return String_Id; -- Str3
7842 function Subtype_Indication
7843 (N : Node_Id) return Node_Id; -- Node5
7845 function Subtype_Mark
7846 (N : Node_Id) return Node_Id; -- Node4
7848 function Subtype_Marks
7849 (N : Node_Id) return List_Id; -- List2
7851 function Synchronized_Present
7852 (N : Node_Id) return Boolean; -- Flag7
7854 function Tagged_Present
7855 (N : Node_Id) return Boolean; -- Flag15
7857 function Target_Type
7858 (N : Node_Id) return Entity_Id; -- Node2
7860 function Task_Definition
7861 (N : Node_Id) return Node_Id; -- Node3
7863 function Task_Present
7864 (N : Node_Id) return Boolean; -- Flag5
7866 function Then_Actions
7867 (N : Node_Id) return List_Id; -- List2
7869 function Then_Statements
7870 (N : Node_Id) return List_Id; -- List2
7872 function Treat_Fixed_As_Integer
7873 (N : Node_Id) return Boolean; -- Flag14
7875 function Triggering_Alternative
7876 (N : Node_Id) return Node_Id; -- Node1
7878 function Triggering_Statement
7879 (N : Node_Id) return Node_Id; -- Node1
7882 (N : Node_Id) return Elist_Id; -- Elist3
7884 function Type_Definition
7885 (N : Node_Id) return Node_Id; -- Node3
7888 (N : Node_Id) return Node_Id; -- Node2
7890 function Unknown_Discriminants_Present
7891 (N : Node_Id) return Boolean; -- Flag13
7893 function Unreferenced_In_Spec
7894 (N : Node_Id) return Boolean; -- Flag7
7896 function Variant_Part
7897 (N : Node_Id) return Node_Id; -- Node4
7900 (N : Node_Id) return List_Id; -- List1
7902 function Visible_Declarations
7903 (N : Node_Id) return List_Id; -- List2
7905 function Was_Originally_Stub
7906 (N : Node_Id) return Boolean; -- Flag13
7908 function Zero_Cost_Handling
7909 (N : Node_Id) return Boolean; -- Flag5
7911 -- End functions (note used by xsinfo utility program to end processing)
7913 ----------------------------
7914 -- Node Update Procedures --
7915 ----------------------------
7917 -- These are the corresponding node update routines, which again provide
7918 -- a high level logical access with type checking. In addition to setting
7919 -- the indicated field of the node N to the given Val, in the case of
7920 -- tree pointers (List1-4), the parent pointer of the Val node is set to
7921 -- point back to node N. This automates the setting of the parent pointer.
7923 procedure Set_ABE_Is_Certain
7924 (N : Node_Id; Val : Boolean := True); -- Flag18
7926 procedure Set_Abort_Present
7927 (N : Node_Id; Val : Boolean := True); -- Flag15
7929 procedure Set_Abortable_Part
7930 (N : Node_Id; Val : Node_Id); -- Node2
7932 procedure Set_Abstract_Present
7933 (N : Node_Id; Val : Boolean := True); -- Flag4
7935 procedure Set_Accept_Handler_Records
7936 (N : Node_Id; Val : List_Id); -- List5
7938 procedure Set_Accept_Statement
7939 (N : Node_Id; Val : Node_Id); -- Node2
7941 procedure Set_Access_Definition
7942 (N : Node_Id; Val : Node_Id); -- Node3
7944 procedure Set_Access_To_Subprogram_Definition
7945 (N : Node_Id; Val : Node_Id); -- Node3
7947 procedure Set_Access_Types_To_Process
7948 (N : Node_Id; Val : Elist_Id); -- Elist2
7950 procedure Set_Actions
7951 (N : Node_Id; Val : List_Id); -- List1
7953 procedure Set_Activation_Chain_Entity
7954 (N : Node_Id; Val : Node_Id); -- Node3
7956 procedure Set_Acts_As_Spec
7957 (N : Node_Id; Val : Boolean := True); -- Flag4
7959 procedure Set_Actual_Designated_Subtype
7960 (N : Node_Id; Val : Node_Id); -- Node2
7962 procedure Set_Aggregate_Bounds
7963 (N : Node_Id; Val : Node_Id); -- Node3
7965 procedure Set_Aliased_Present
7966 (N : Node_Id; Val : Boolean := True); -- Flag4
7968 procedure Set_All_Others
7969 (N : Node_Id; Val : Boolean := True); -- Flag11
7971 procedure Set_All_Present
7972 (N : Node_Id; Val : Boolean := True); -- Flag15
7974 procedure Set_Alternatives
7975 (N : Node_Id; Val : List_Id); -- List4
7977 procedure Set_Ancestor_Part
7978 (N : Node_Id; Val : Node_Id); -- Node3
7980 procedure Set_Array_Aggregate
7981 (N : Node_Id; Val : Node_Id); -- Node3
7983 procedure Set_Assignment_OK
7984 (N : Node_Id; Val : Boolean := True); -- Flag15
7986 procedure Set_Associated_Node
7987 (N : Node_Id; Val : Node_Id); -- Node4
7989 procedure Set_Attribute_Name
7990 (N : Node_Id; Val : Name_Id); -- Name2
7992 procedure Set_At_End_Proc
7993 (N : Node_Id; Val : Node_Id); -- Node1
7995 procedure Set_Aux_Decls_Node
7996 (N : Node_Id; Val : Node_Id); -- Node5
7998 procedure Set_Backwards_OK
7999 (N : Node_Id; Val : Boolean := True); -- Flag6
8001 procedure Set_Bad_Is_Detected
8002 (N : Node_Id; Val : Boolean := True); -- Flag15
8004 procedure Set_Body_Required
8005 (N : Node_Id; Val : Boolean := True); -- Flag13
8007 procedure Set_Body_To_Inline
8008 (N : Node_Id; Val : Node_Id); -- Node3
8010 procedure Set_Box_Present
8011 (N : Node_Id; Val : Boolean := True); -- Flag15
8013 procedure Set_By_Ref
8014 (N : Node_Id; Val : Boolean := True); -- Flag5
8016 procedure Set_Char_Literal_Value
8017 (N : Node_Id; Val : Uint); -- Uint2
8020 (N : Node_Id; Val : Name_Id); -- Name1
8022 procedure Set_Check_Address_Alignment
8023 (N : Node_Id; Val : Boolean := True); -- Flag11
8025 procedure Set_Choice_Parameter
8026 (N : Node_Id; Val : Node_Id); -- Node2
8028 procedure Set_Choices
8029 (N : Node_Id; Val : List_Id); -- List1
8031 procedure Set_Compile_Time_Known_Aggregate
8032 (N : Node_Id; Val : Boolean := True); -- Flag18
8034 procedure Set_Component_Associations
8035 (N : Node_Id; Val : List_Id); -- List2
8037 procedure Set_Component_Clauses
8038 (N : Node_Id; Val : List_Id); -- List3
8040 procedure Set_Component_Definition
8041 (N : Node_Id; Val : Node_Id); -- Node4
8043 procedure Set_Component_Items
8044 (N : Node_Id; Val : List_Id); -- List3
8046 procedure Set_Component_List
8047 (N : Node_Id; Val : Node_Id); -- Node1
8049 procedure Set_Component_Name
8050 (N : Node_Id; Val : Node_Id); -- Node1
8052 procedure Set_Condition
8053 (N : Node_Id; Val : Node_Id); -- Node1
8055 procedure Set_Condition_Actions
8056 (N : Node_Id; Val : List_Id); -- List3
8058 procedure Set_Config_Pragmas
8059 (N : Node_Id; Val : List_Id); -- List4
8061 procedure Set_Constant_Present
8062 (N : Node_Id; Val : Boolean := True); -- Flag17
8064 procedure Set_Constraint
8065 (N : Node_Id; Val : Node_Id); -- Node3
8067 procedure Set_Constraints
8068 (N : Node_Id; Val : List_Id); -- List1
8070 procedure Set_Context_Installed
8071 (N : Node_Id; Val : Boolean := True); -- Flag13
8073 procedure Set_Context_Items
8074 (N : Node_Id; Val : List_Id); -- List1
8076 procedure Set_Controlling_Argument
8077 (N : Node_Id; Val : Node_Id); -- Node1
8079 procedure Set_Conversion_OK
8080 (N : Node_Id; Val : Boolean := True); -- Flag14
8082 procedure Set_Corresponding_Body
8083 (N : Node_Id; Val : Node_Id); -- Node5
8085 procedure Set_Corresponding_Formal_Spec
8086 (N : Node_Id; Val : Node_Id); -- Node3
8088 procedure Set_Corresponding_Generic_Association
8089 (N : Node_Id; Val : Node_Id); -- Node5
8091 procedure Set_Corresponding_Integer_Value
8092 (N : Node_Id; Val : Uint); -- Uint4
8094 procedure Set_Corresponding_Spec
8095 (N : Node_Id; Val : Node_Id); -- Node5
8097 procedure Set_Corresponding_Stub
8098 (N : Node_Id; Val : Node_Id); -- Node3
8100 procedure Set_Dcheck_Function
8101 (N : Node_Id; Val : Entity_Id); -- Node5
8103 procedure Set_Debug_Statement
8104 (N : Node_Id; Val : Node_Id); -- Node3
8106 procedure Set_Declarations
8107 (N : Node_Id; Val : List_Id); -- List2
8109 procedure Set_Default_Expression
8110 (N : Node_Id; Val : Node_Id); -- Node5
8112 procedure Set_Default_Name
8113 (N : Node_Id; Val : Node_Id); -- Node2
8115 procedure Set_Defining_Identifier
8116 (N : Node_Id; Val : Entity_Id); -- Node1
8118 procedure Set_Defining_Unit_Name
8119 (N : Node_Id; Val : Node_Id); -- Node1
8121 procedure Set_Delay_Alternative
8122 (N : Node_Id; Val : Node_Id); -- Node4
8124 procedure Set_Delay_Finalize_Attach
8125 (N : Node_Id; Val : Boolean := True); -- Flag14
8127 procedure Set_Delay_Statement
8128 (N : Node_Id; Val : Node_Id); -- Node2
8130 procedure Set_Delta_Expression
8131 (N : Node_Id; Val : Node_Id); -- Node3
8133 procedure Set_Digits_Expression
8134 (N : Node_Id; Val : Node_Id); -- Node2
8136 procedure Set_Discr_Check_Funcs_Built
8137 (N : Node_Id; Val : Boolean := True); -- Flag11
8139 procedure Set_Discrete_Choices
8140 (N : Node_Id; Val : List_Id); -- List4
8142 procedure Set_Discrete_Range
8143 (N : Node_Id; Val : Node_Id); -- Node4
8145 procedure Set_Discrete_Subtype_Definition
8146 (N : Node_Id; Val : Node_Id); -- Node4
8148 procedure Set_Discrete_Subtype_Definitions
8149 (N : Node_Id; Val : List_Id); -- List2
8151 procedure Set_Discriminant_Specifications
8152 (N : Node_Id; Val : List_Id); -- List4
8154 procedure Set_Discriminant_Type
8155 (N : Node_Id; Val : Node_Id); -- Node5
8157 procedure Set_Do_Accessibility_Check
8158 (N : Node_Id; Val : Boolean := True); -- Flag13
8160 procedure Set_Do_Discriminant_Check
8161 (N : Node_Id; Val : Boolean := True); -- Flag13
8163 procedure Set_Do_Division_Check
8164 (N : Node_Id; Val : Boolean := True); -- Flag13
8166 procedure Set_Do_Length_Check
8167 (N : Node_Id; Val : Boolean := True); -- Flag4
8169 procedure Set_Do_Overflow_Check
8170 (N : Node_Id; Val : Boolean := True); -- Flag17
8172 procedure Set_Do_Range_Check
8173 (N : Node_Id; Val : Boolean := True); -- Flag9
8175 procedure Set_Do_Storage_Check
8176 (N : Node_Id; Val : Boolean := True); -- Flag17
8178 procedure Set_Do_Tag_Check
8179 (N : Node_Id; Val : Boolean := True); -- Flag13
8181 procedure Set_Elaborate_All_Desirable
8182 (N : Node_Id; Val : Boolean := True); -- Flag9
8184 procedure Set_Elaborate_All_Present
8185 (N : Node_Id; Val : Boolean := True); -- Flag14
8187 procedure Set_Elaborate_Desirable
8188 (N : Node_Id; Val : Boolean := True); -- Flag11
8190 procedure Set_Elaborate_Present
8191 (N : Node_Id; Val : Boolean := True); -- Flag4
8193 procedure Set_Elaboration_Boolean
8194 (N : Node_Id; Val : Node_Id); -- Node2
8196 procedure Set_Else_Actions
8197 (N : Node_Id; Val : List_Id); -- List3
8199 procedure Set_Else_Statements
8200 (N : Node_Id; Val : List_Id); -- List4
8202 procedure Set_Elsif_Parts
8203 (N : Node_Id; Val : List_Id); -- List3
8205 procedure Set_Enclosing_Variant
8206 (N : Node_Id; Val : Node_Id); -- Node2
8208 procedure Set_End_Label
8209 (N : Node_Id; Val : Node_Id); -- Node4
8211 procedure Set_End_Span
8212 (N : Node_Id; Val : Uint); -- Uint5
8214 procedure Set_Entity
8215 (N : Node_Id; Val : Node_Id); -- Node4
8217 procedure Set_Entry_Body_Formal_Part
8218 (N : Node_Id; Val : Node_Id); -- Node5
8220 procedure Set_Entry_Call_Alternative
8221 (N : Node_Id; Val : Node_Id); -- Node1
8223 procedure Set_Entry_Call_Statement
8224 (N : Node_Id; Val : Node_Id); -- Node1
8226 procedure Set_Entry_Direct_Name
8227 (N : Node_Id; Val : Node_Id); -- Node1
8229 procedure Set_Entry_Index
8230 (N : Node_Id; Val : Node_Id); -- Node5
8232 procedure Set_Entry_Index_Specification
8233 (N : Node_Id; Val : Node_Id); -- Node4
8236 (N : Node_Id; Val : Node_Id); -- Node5
8238 procedure Set_Exception_Choices
8239 (N : Node_Id; Val : List_Id); -- List4
8241 procedure Set_Exception_Handlers
8242 (N : Node_Id; Val : List_Id); -- List5
8244 procedure Set_Exception_Junk
8245 (N : Node_Id; Val : Boolean := True); -- Flag7
8247 procedure Set_Expansion_Delayed
8248 (N : Node_Id; Val : Boolean := True); -- Flag11
8250 procedure Set_Explicit_Actual_Parameter
8251 (N : Node_Id; Val : Node_Id); -- Node3
8253 procedure Set_Explicit_Generic_Actual_Parameter
8254 (N : Node_Id; Val : Node_Id); -- Node1
8256 procedure Set_Expression
8257 (N : Node_Id; Val : Node_Id); -- Node3
8259 procedure Set_Expressions
8260 (N : Node_Id; Val : List_Id); -- List1
8262 procedure Set_First_Bit
8263 (N : Node_Id; Val : Node_Id); -- Node3
8265 procedure Set_First_Inlined_Subprogram
8266 (N : Node_Id; Val : Entity_Id); -- Node3
8268 procedure Set_First_Name
8269 (N : Node_Id; Val : Boolean := True); -- Flag5
8271 procedure Set_First_Named_Actual
8272 (N : Node_Id; Val : Node_Id); -- Node4
8274 procedure Set_First_Real_Statement
8275 (N : Node_Id; Val : Node_Id); -- Node2
8277 procedure Set_First_Subtype_Link
8278 (N : Node_Id; Val : Entity_Id); -- Node5
8280 procedure Set_Float_Truncate
8281 (N : Node_Id; Val : Boolean := True); -- Flag11
8283 procedure Set_Formal_Type_Definition
8284 (N : Node_Id; Val : Node_Id); -- Node3
8286 procedure Set_Forwards_OK
8287 (N : Node_Id; Val : Boolean := True); -- Flag5
8289 procedure Set_From_At_Mod
8290 (N : Node_Id; Val : Boolean := True); -- Flag4
8292 procedure Set_From_Default
8293 (N : Node_Id; Val : Boolean := True); -- Flag6
8295 procedure Set_Generic_Associations
8296 (N : Node_Id; Val : List_Id); -- List3
8298 procedure Set_Generic_Formal_Declarations
8299 (N : Node_Id; Val : List_Id); -- List2
8301 procedure Set_Generic_Parent
8302 (N : Node_Id; Val : Node_Id); -- Node5
8304 procedure Set_Generic_Parent_Type
8305 (N : Node_Id; Val : Node_Id); -- Node4
8307 procedure Set_Handled_Statement_Sequence
8308 (N : Node_Id; Val : Node_Id); -- Node4
8310 procedure Set_Handler_List_Entry
8311 (N : Node_Id; Val : Node_Id); -- Node2
8313 procedure Set_Has_Created_Identifier
8314 (N : Node_Id; Val : Boolean := True); -- Flag15
8316 procedure Set_Has_Dynamic_Length_Check
8317 (N : Node_Id; Val : Boolean := True); -- Flag10
8319 procedure Set_Has_Dynamic_Range_Check
8320 (N : Node_Id; Val : Boolean := True); -- Flag12
8322 procedure Set_Has_No_Elaboration_Code
8323 (N : Node_Id; Val : Boolean := True); -- Flag17
8325 procedure Set_Has_Priority_Pragma
8326 (N : Node_Id; Val : Boolean := True); -- Flag6
8328 procedure Set_Has_Private_View
8329 (N : Node_Id; Val : Boolean := True); -- Flag11
8331 procedure Set_Has_Storage_Size_Pragma
8332 (N : Node_Id; Val : Boolean := True); -- Flag5
8334 procedure Set_Has_Task_Info_Pragma
8335 (N : Node_Id; Val : Boolean := True); -- Flag7
8337 procedure Set_Has_Task_Name_Pragma
8338 (N : Node_Id; Val : Boolean := True); -- Flag8
8340 procedure Set_Has_Wide_Character
8341 (N : Node_Id; Val : Boolean := True); -- Flag11
8343 procedure Set_Hidden_By_Use_Clause
8344 (N : Node_Id; Val : Elist_Id); -- Elist4
8346 procedure Set_High_Bound
8347 (N : Node_Id; Val : Node_Id); -- Node2
8349 procedure Set_Identifier
8350 (N : Node_Id; Val : Node_Id); -- Node1
8352 procedure Set_Interface_List
8353 (N : Node_Id; Val : List_Id); -- List2
8355 procedure Set_Interface_Present
8356 (N : Node_Id; Val : Boolean := True); -- Flag16
8358 procedure Set_Implicit_With
8359 (N : Node_Id; Val : Boolean := True); -- Flag16
8361 procedure Set_In_Present
8362 (N : Node_Id; Val : Boolean := True); -- Flag15
8364 procedure Set_Includes_Infinities
8365 (N : Node_Id; Val : Boolean := True); -- Flag11
8367 procedure Set_Instance_Spec
8368 (N : Node_Id; Val : Node_Id); -- Node5
8370 procedure Set_Intval
8371 (N : Node_Id; Val : Uint); -- Uint3
8373 procedure Set_Is_Asynchronous_Call_Block
8374 (N : Node_Id; Val : Boolean := True); -- Flag7
8376 procedure Set_Is_Component_Left_Opnd
8377 (N : Node_Id; Val : Boolean := True); -- Flag13
8379 procedure Set_Is_Component_Right_Opnd
8380 (N : Node_Id; Val : Boolean := True); -- Flag14
8382 procedure Set_Is_Controlling_Actual
8383 (N : Node_Id; Val : Boolean := True); -- Flag16
8385 procedure Set_Is_In_Discriminant_Check
8386 (N : Node_Id; Val : Boolean := True); -- Flag11
8388 procedure Set_Is_Machine_Number
8389 (N : Node_Id; Val : Boolean := True); -- Flag11
8391 procedure Set_Is_Null_Loop
8392 (N : Node_Id; Val : Boolean := True); -- Flag16
8394 procedure Set_Is_Overloaded
8395 (N : Node_Id; Val : Boolean := True); -- Flag5
8397 procedure Set_Is_Power_Of_2_For_Shift
8398 (N : Node_Id; Val : Boolean := True); -- Flag13
8400 procedure Set_Is_Protected_Subprogram_Body
8401 (N : Node_Id; Val : Boolean := True); -- Flag7
8403 procedure Set_Is_Static_Expression
8404 (N : Node_Id; Val : Boolean := True); -- Flag6
8406 procedure Set_Is_Subprogram_Descriptor
8407 (N : Node_Id; Val : Boolean := True); -- Flag16
8409 procedure Set_Is_Task_Allocation_Block
8410 (N : Node_Id; Val : Boolean := True); -- Flag6
8412 procedure Set_Is_Task_Master
8413 (N : Node_Id; Val : Boolean := True); -- Flag5
8415 procedure Set_Iteration_Scheme
8416 (N : Node_Id; Val : Node_Id); -- Node2
8419 (N : Node_Id; Val : Entity_Id); -- Node1
8421 procedure Set_Kill_Range_Check
8422 (N : Node_Id; Val : Boolean := True); -- Flag11
8424 procedure Set_Last_Bit
8425 (N : Node_Id; Val : Node_Id); -- Node4
8427 procedure Set_Last_Name
8428 (N : Node_Id; Val : Boolean := True); -- Flag6
8430 procedure Set_Library_Unit
8431 (N : Node_Id; Val : Node_Id); -- Node4
8433 procedure Set_Label_Construct
8434 (N : Node_Id; Val : Node_Id); -- Node2
8436 procedure Set_Left_Opnd
8437 (N : Node_Id; Val : Node_Id); -- Node2
8439 procedure Set_Limited_View_Installed
8440 (N : Node_Id; Val : Boolean := True); -- Flag18
8442 procedure Set_Limited_Present
8443 (N : Node_Id; Val : Boolean := True); -- Flag17
8445 procedure Set_Literals
8446 (N : Node_Id; Val : List_Id); -- List1
8448 procedure Set_Loop_Actions
8449 (N : Node_Id; Val : List_Id); -- List2
8451 procedure Set_Loop_Parameter_Specification
8452 (N : Node_Id; Val : Node_Id); -- Node4
8454 procedure Set_Low_Bound
8455 (N : Node_Id; Val : Node_Id); -- Node1
8457 procedure Set_Mod_Clause
8458 (N : Node_Id; Val : Node_Id); -- Node2
8460 procedure Set_More_Ids
8461 (N : Node_Id; Val : Boolean := True); -- Flag5
8463 procedure Set_Must_Be_Byte_Aligned
8464 (N : Node_Id; Val : Boolean := True); -- Flag14
8466 procedure Set_Must_Not_Freeze
8467 (N : Node_Id; Val : Boolean := True); -- Flag8
8469 procedure Set_Must_Not_Override
8470 (N : Node_Id; Val : Boolean := True); -- Flag15
8472 procedure Set_Must_Override
8473 (N : Node_Id; Val : Boolean := True); -- Flag14
8476 (N : Node_Id; Val : Node_Id); -- Node2
8479 (N : Node_Id; Val : List_Id); -- List2
8481 procedure Set_Next_Entity
8482 (N : Node_Id; Val : Node_Id); -- Node2
8484 procedure Set_Next_Named_Actual
8485 (N : Node_Id; Val : Node_Id); -- Node4
8487 procedure Set_Next_Rep_Item
8488 (N : Node_Id; Val : Node_Id); -- Node4
8490 procedure Set_Next_Use_Clause
8491 (N : Node_Id; Val : Node_Id); -- Node3
8493 procedure Set_No_Ctrl_Actions
8494 (N : Node_Id; Val : Boolean := True); -- Flag7
8496 procedure Set_No_Elaboration_Check
8497 (N : Node_Id; Val : Boolean := True); -- Flag14
8499 procedure Set_No_Entities_Ref_In_Spec
8500 (N : Node_Id; Val : Boolean := True); -- Flag8
8502 procedure Set_No_Initialization
8503 (N : Node_Id; Val : Boolean := True); -- Flag13
8505 procedure Set_No_Truncation
8506 (N : Node_Id; Val : Boolean := True); -- Flag17
8508 procedure Set_Null_Present
8509 (N : Node_Id; Val : Boolean := True); -- Flag13
8511 procedure Set_Null_Exclusion_Present
8512 (N : Node_Id; Val : Boolean := True); -- Flag11
8514 procedure Set_Null_Record_Present
8515 (N : Node_Id; Val : Boolean := True); -- Flag17
8517 procedure Set_Object_Definition
8518 (N : Node_Id; Val : Node_Id); -- Node4
8520 procedure Set_Original_Discriminant
8521 (N : Node_Id; Val : Node_Id); -- Node2
8523 procedure Set_Original_Entity
8524 (N : Node_Id; Val : Entity_Id); -- Node2
8526 procedure Set_Others_Discrete_Choices
8527 (N : Node_Id; Val : List_Id); -- List1
8529 procedure Set_Out_Present
8530 (N : Node_Id; Val : Boolean := True); -- Flag17
8532 procedure Set_Parameter_Associations
8533 (N : Node_Id; Val : List_Id); -- List3
8535 procedure Set_Parameter_List_Truncated
8536 (N : Node_Id; Val : Boolean := True); -- Flag17
8538 procedure Set_Parameter_Specifications
8539 (N : Node_Id; Val : List_Id); -- List3
8541 procedure Set_Parameter_Type
8542 (N : Node_Id; Val : Node_Id); -- Node2
8544 procedure Set_Parent_Spec
8545 (N : Node_Id; Val : Node_Id); -- Node4
8547 procedure Set_Position
8548 (N : Node_Id; Val : Node_Id); -- Node2
8550 procedure Set_Pragma_Argument_Associations
8551 (N : Node_Id; Val : List_Id); -- List2
8553 procedure Set_Pragmas_After
8554 (N : Node_Id; Val : List_Id); -- List5
8556 procedure Set_Pragmas_Before
8557 (N : Node_Id; Val : List_Id); -- List4
8559 procedure Set_Prefix
8560 (N : Node_Id; Val : Node_Id); -- Node3
8562 procedure Set_Present_Expr
8563 (N : Node_Id; Val : Uint); -- Uint3
8565 procedure Set_Prev_Ids
8566 (N : Node_Id; Val : Boolean := True); -- Flag6
8568 procedure Set_Print_In_Hex
8569 (N : Node_Id; Val : Boolean := True); -- Flag13
8571 procedure Set_Private_Declarations
8572 (N : Node_Id; Val : List_Id); -- List3
8574 procedure Set_Private_Present
8575 (N : Node_Id; Val : Boolean := True); -- Flag15
8577 procedure Set_Procedure_To_Call
8578 (N : Node_Id; Val : Node_Id); -- Node4
8580 procedure Set_Proper_Body
8581 (N : Node_Id; Val : Node_Id); -- Node1
8583 procedure Set_Protected_Definition
8584 (N : Node_Id; Val : Node_Id); -- Node3
8586 procedure Set_Protected_Present
8587 (N : Node_Id; Val : Boolean := True); -- Flag6
8589 procedure Set_Raises_Constraint_Error
8590 (N : Node_Id; Val : Boolean := True); -- Flag7
8592 procedure Set_Range_Constraint
8593 (N : Node_Id; Val : Node_Id); -- Node4
8595 procedure Set_Range_Expression
8596 (N : Node_Id; Val : Node_Id); -- Node4
8598 procedure Set_Real_Range_Specification
8599 (N : Node_Id; Val : Node_Id); -- Node4
8601 procedure Set_Realval
8602 (N : Node_Id; Val : Ureal); -- Ureal3
8604 procedure Set_Reason
8605 (N : Node_Id; Val : Uint); -- Uint3
8607 procedure Set_Record_Extension_Part
8608 (N : Node_Id; Val : Node_Id); -- Node3
8610 procedure Set_Redundant_Use
8611 (N : Node_Id; Val : Boolean := True); -- Flag13
8613 procedure Set_Result_Definition
8614 (N : Node_Id; Val : Node_Id); -- Node4
8616 procedure Set_Return_Type
8617 (N : Node_Id; Val : Node_Id); -- Node2
8619 procedure Set_Reverse_Present
8620 (N : Node_Id; Val : Boolean := True); -- Flag15
8622 procedure Set_Right_Opnd
8623 (N : Node_Id; Val : Node_Id); -- Node3
8625 procedure Set_Rounded_Result
8626 (N : Node_Id; Val : Boolean := True); -- Flag18
8629 (N : Node_Id; Val : Node_Id); -- Node3
8631 procedure Set_Select_Alternatives
8632 (N : Node_Id; Val : List_Id); -- List1
8634 procedure Set_Selector_Name
8635 (N : Node_Id; Val : Node_Id); -- Node2
8637 procedure Set_Selector_Names
8638 (N : Node_Id; Val : List_Id); -- List1
8640 procedure Set_Shift_Count_OK
8641 (N : Node_Id; Val : Boolean := True); -- Flag4
8643 procedure Set_Source_Type
8644 (N : Node_Id; Val : Entity_Id); -- Node1
8646 procedure Set_Specification
8647 (N : Node_Id; Val : Node_Id); -- Node1
8649 procedure Set_Statements
8650 (N : Node_Id; Val : List_Id); -- List3
8652 procedure Set_Static_Processing_OK
8653 (N : Node_Id; Val : Boolean); -- Flag4
8655 procedure Set_Storage_Pool
8656 (N : Node_Id; Val : Node_Id); -- Node1
8658 procedure Set_Strval
8659 (N : Node_Id; Val : String_Id); -- Str3
8661 procedure Set_Subtype_Indication
8662 (N : Node_Id; Val : Node_Id); -- Node5
8664 procedure Set_Subtype_Mark
8665 (N : Node_Id; Val : Node_Id); -- Node4
8667 procedure Set_Subtype_Marks
8668 (N : Node_Id; Val : List_Id); -- List2
8670 procedure Set_Synchronized_Present
8671 (N : Node_Id; Val : Boolean := True); -- Flag7
8673 procedure Set_Tagged_Present
8674 (N : Node_Id; Val : Boolean := True); -- Flag15
8676 procedure Set_Target_Type
8677 (N : Node_Id; Val : Entity_Id); -- Node2
8679 procedure Set_Task_Definition
8680 (N : Node_Id; Val : Node_Id); -- Node3
8682 procedure Set_Task_Present
8683 (N : Node_Id; Val : Boolean := True); -- Flag5
8685 procedure Set_Then_Actions
8686 (N : Node_Id; Val : List_Id); -- List2
8688 procedure Set_Then_Statements
8689 (N : Node_Id; Val : List_Id); -- List2
8691 procedure Set_Treat_Fixed_As_Integer
8692 (N : Node_Id; Val : Boolean := True); -- Flag14
8694 procedure Set_Triggering_Alternative
8695 (N : Node_Id; Val : Node_Id); -- Node1
8697 procedure Set_Triggering_Statement
8698 (N : Node_Id; Val : Node_Id); -- Node1
8700 procedure Set_TSS_Elist
8701 (N : Node_Id; Val : Elist_Id); -- Elist3
8703 procedure Set_Type_Definition
8704 (N : Node_Id; Val : Node_Id); -- Node3
8707 (N : Node_Id; Val : Node_Id); -- Node2
8709 procedure Set_Unknown_Discriminants_Present
8710 (N : Node_Id; Val : Boolean := True); -- Flag13
8712 procedure Set_Unreferenced_In_Spec
8713 (N : Node_Id; Val : Boolean := True); -- Flag7
8715 procedure Set_Variant_Part
8716 (N : Node_Id; Val : Node_Id); -- Node4
8718 procedure Set_Variants
8719 (N : Node_Id; Val : List_Id); -- List1
8721 procedure Set_Visible_Declarations
8722 (N : Node_Id; Val : List_Id); -- List2
8724 procedure Set_Was_Originally_Stub
8725 (N : Node_Id; Val : Boolean := True); -- Flag13
8727 procedure Set_Zero_Cost_Handling
8728 (N : Node_Id; Val : Boolean := True); -- Flag5
8730 -------------------------
8731 -- Iterator Procedures --
8732 -------------------------
8734 -- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
8736 procedure Next_Entity (N : in out Node_Id);
8737 procedure Next_Named_Actual (N : in out Node_Id);
8738 procedure Next_Rep_Item (N : in out Node_Id);
8739 procedure Next_Use_Clause (N : in out Node_Id);
8741 --------------------------------------
8742 -- Logical Access to End_Span Field --
8743 --------------------------------------
8745 function End_Location (N : Node_Id) return Source_Ptr;
8746 -- N is an N_If_Statement or N_Case_Statement node, and this
8747 -- function returns the location of the IF token in the END IF
8748 -- sequence by translating the value of the End_Span field.
8750 procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
8751 -- N is an N_If_Statement or N_Case_Statement node. This procedure
8752 -- sets the End_Span field to correspond to the given value S. In
8753 -- other words, End_Span is set to the difference between S and
8754 -- Sloc (N), the starting location.
8756 --------------------
8757 -- Inline Pragmas --
8758 --------------------
8760 pragma Inline (ABE_Is_Certain);
8761 pragma Inline (Abort_Present);
8762 pragma Inline (Abortable_Part);
8763 pragma Inline (Abstract_Present);
8764 pragma Inline (Accept_Handler_Records);
8765 pragma Inline (Accept_Statement);
8766 pragma Inline (Access_Definition);
8767 pragma Inline (Access_To_Subprogram_Definition);
8768 pragma Inline (Access_Types_To_Process);
8769 pragma Inline (Actions);
8770 pragma Inline (Activation_Chain_Entity);
8771 pragma Inline (Acts_As_Spec);
8772 pragma Inline (Actual_Designated_Subtype);
8773 pragma Inline (Aggregate_Bounds);
8774 pragma Inline (Aliased_Present);
8775 pragma Inline (All_Others);
8776 pragma Inline (All_Present);
8777 pragma Inline (Alternatives);
8778 pragma Inline (Ancestor_Part);
8779 pragma Inline (Array_Aggregate);
8780 pragma Inline (Assignment_OK);
8781 pragma Inline (Associated_Node);
8782 pragma Inline (At_End_Proc);
8783 pragma Inline (Attribute_Name);
8784 pragma Inline (Aux_Decls_Node);
8785 pragma Inline (Backwards_OK);
8786 pragma Inline (Bad_Is_Detected);
8787 pragma Inline (Body_To_Inline);
8788 pragma Inline (Body_Required);
8789 pragma Inline (By_Ref);
8790 pragma Inline (Box_Present);
8791 pragma Inline (Char_Literal_Value);
8792 pragma Inline (Chars);
8793 pragma Inline (Check_Address_Alignment);
8794 pragma Inline (Choice_Parameter);
8795 pragma Inline (Choices);
8796 pragma Inline (Compile_Time_Known_Aggregate);
8797 pragma Inline (Component_Associations);
8798 pragma Inline (Component_Clauses);
8799 pragma Inline (Component_Definition);
8800 pragma Inline (Component_Items);
8801 pragma Inline (Component_List);
8802 pragma Inline (Component_Name);
8803 pragma Inline (Condition);
8804 pragma Inline (Condition_Actions);
8805 pragma Inline (Config_Pragmas);
8806 pragma Inline (Constant_Present);
8807 pragma Inline (Constraint);
8808 pragma Inline (Constraints);
8809 pragma Inline (Context_Installed);
8810 pragma Inline (Context_Items);
8811 pragma Inline (Controlling_Argument);
8812 pragma Inline (Conversion_OK);
8813 pragma Inline (Corresponding_Body);
8814 pragma Inline (Corresponding_Formal_Spec);
8815 pragma Inline (Corresponding_Generic_Association);
8816 pragma Inline (Corresponding_Integer_Value);
8817 pragma Inline (Corresponding_Spec);
8818 pragma Inline (Corresponding_Stub);
8819 pragma Inline (Dcheck_Function);
8820 pragma Inline (Debug_Statement);
8821 pragma Inline (Declarations);
8822 pragma Inline (Default_Expression);
8823 pragma Inline (Default_Name);
8824 pragma Inline (Defining_Identifier);
8825 pragma Inline (Defining_Unit_Name);
8826 pragma Inline (Delay_Alternative);
8827 pragma Inline (Delay_Finalize_Attach);
8828 pragma Inline (Delay_Statement);
8829 pragma Inline (Delta_Expression);
8830 pragma Inline (Digits_Expression);
8831 pragma Inline (Discr_Check_Funcs_Built);
8832 pragma Inline (Discrete_Choices);
8833 pragma Inline (Discrete_Range);
8834 pragma Inline (Discrete_Subtype_Definition);
8835 pragma Inline (Discrete_Subtype_Definitions);
8836 pragma Inline (Discriminant_Specifications);
8837 pragma Inline (Discriminant_Type);
8838 pragma Inline (Do_Accessibility_Check);
8839 pragma Inline (Do_Discriminant_Check);
8840 pragma Inline (Do_Length_Check);
8841 pragma Inline (Do_Division_Check);
8842 pragma Inline (Do_Overflow_Check);
8843 pragma Inline (Do_Range_Check);
8844 pragma Inline (Do_Storage_Check);
8845 pragma Inline (Do_Tag_Check);
8846 pragma Inline (Elaborate_Present);
8847 pragma Inline (Elaborate_All_Desirable);
8848 pragma Inline (Elaborate_All_Present);
8849 pragma Inline (Elaborate_Desirable);
8850 pragma Inline (Elaboration_Boolean);
8851 pragma Inline (Else_Actions);
8852 pragma Inline (Else_Statements);
8853 pragma Inline (Elsif_Parts);
8854 pragma Inline (Enclosing_Variant);
8855 pragma Inline (End_Label);
8856 pragma Inline (End_Span);
8857 pragma Inline (Entity);
8858 pragma Inline (Entity_Or_Associated_Node);
8859 pragma Inline (Entry_Body_Formal_Part);
8860 pragma Inline (Entry_Call_Alternative);
8861 pragma Inline (Entry_Call_Statement);
8862 pragma Inline (Entry_Direct_Name);
8863 pragma Inline (Entry_Index);
8864 pragma Inline (Entry_Index_Specification);
8865 pragma Inline (Etype);
8866 pragma Inline (Exception_Choices);
8867 pragma Inline (Exception_Junk);
8868 pragma Inline (Exception_Handlers);
8869 pragma Inline (Expansion_Delayed);
8870 pragma Inline (Explicit_Actual_Parameter);
8871 pragma Inline (Explicit_Generic_Actual_Parameter);
8872 pragma Inline (Expression);
8873 pragma Inline (Expressions);
8874 pragma Inline (First_Bit);
8875 pragma Inline (First_Inlined_Subprogram);
8876 pragma Inline (First_Name);
8877 pragma Inline (First_Named_Actual);
8878 pragma Inline (First_Real_Statement);
8879 pragma Inline (First_Subtype_Link);
8880 pragma Inline (Float_Truncate);
8881 pragma Inline (Formal_Type_Definition);
8882 pragma Inline (Forwards_OK);
8883 pragma Inline (From_At_Mod);
8884 pragma Inline (From_Default);
8885 pragma Inline (Generic_Associations);
8886 pragma Inline (Generic_Formal_Declarations);
8887 pragma Inline (Generic_Parent);
8888 pragma Inline (Generic_Parent_Type);
8889 pragma Inline (Handled_Statement_Sequence);
8890 pragma Inline (Handler_List_Entry);
8891 pragma Inline (Has_Created_Identifier);
8892 pragma Inline (Has_Dynamic_Length_Check);
8893 pragma Inline (Has_Dynamic_Range_Check);
8894 pragma Inline (Has_No_Elaboration_Code);
8895 pragma Inline (Has_Priority_Pragma);
8896 pragma Inline (Has_Private_View);
8897 pragma Inline (Has_Storage_Size_Pragma);
8898 pragma Inline (Has_Task_Info_Pragma);
8899 pragma Inline (Has_Task_Name_Pragma);
8900 pragma Inline (Has_Wide_Character);
8901 pragma Inline (Hidden_By_Use_Clause);
8902 pragma Inline (High_Bound);
8903 pragma Inline (Identifier);
8904 pragma Inline (Implicit_With);
8905 pragma Inline (Interface_List);
8906 pragma Inline (Interface_Present);
8907 pragma Inline (Includes_Infinities);
8908 pragma Inline (In_Present);
8909 pragma Inline (Instance_Spec);
8910 pragma Inline (Intval);
8911 pragma Inline (Is_Asynchronous_Call_Block);
8912 pragma Inline (Is_Component_Left_Opnd);
8913 pragma Inline (Is_Component_Right_Opnd);
8914 pragma Inline (Is_Controlling_Actual);
8915 pragma Inline (Is_In_Discriminant_Check);
8916 pragma Inline (Is_Machine_Number);
8917 pragma Inline (Is_Null_Loop);
8918 pragma Inline (Is_Overloaded);
8919 pragma Inline (Is_Power_Of_2_For_Shift);
8920 pragma Inline (Is_Protected_Subprogram_Body);
8921 pragma Inline (Is_Static_Expression);
8922 pragma Inline (Is_Subprogram_Descriptor);
8923 pragma Inline (Is_Task_Allocation_Block);
8924 pragma Inline (Is_Task_Master);
8925 pragma Inline (Iteration_Scheme);
8926 pragma Inline (Itype);
8927 pragma Inline (Kill_Range_Check);
8928 pragma Inline (Last_Bit);
8929 pragma Inline (Last_Name);
8930 pragma Inline (Library_Unit);
8931 pragma Inline (Label_Construct);
8932 pragma Inline (Left_Opnd);
8933 pragma Inline (Limited_View_Installed);
8934 pragma Inline (Limited_Present);
8935 pragma Inline (Literals);
8936 pragma Inline (Loop_Actions);
8937 pragma Inline (Loop_Parameter_Specification);
8938 pragma Inline (Low_Bound);
8939 pragma Inline (Mod_Clause);
8940 pragma Inline (More_Ids);
8941 pragma Inline (Must_Be_Byte_Aligned);
8942 pragma Inline (Must_Not_Freeze);
8943 pragma Inline (Must_Not_Override);
8944 pragma Inline (Must_Override);
8945 pragma Inline (Name);
8946 pragma Inline (Names);
8947 pragma Inline (Next_Entity);
8948 pragma Inline (Next_Named_Actual);
8949 pragma Inline (Next_Rep_Item);
8950 pragma Inline (Next_Use_Clause);
8951 pragma Inline (No_Ctrl_Actions);
8952 pragma Inline (No_Elaboration_Check);
8953 pragma Inline (No_Entities_Ref_In_Spec);
8954 pragma Inline (No_Initialization);
8955 pragma Inline (No_Truncation);
8956 pragma Inline (Null_Present);
8957 pragma Inline (Null_Exclusion_Present);
8958 pragma Inline (Null_Record_Present);
8959 pragma Inline (Object_Definition);
8960 pragma Inline (Original_Discriminant);
8961 pragma Inline (Original_Entity);
8962 pragma Inline (Others_Discrete_Choices);
8963 pragma Inline (Out_Present);
8964 pragma Inline (Parameter_Associations);
8965 pragma Inline (Parameter_Specifications);
8966 pragma Inline (Parameter_List_Truncated);
8967 pragma Inline (Parameter_Type);
8968 pragma Inline (Parent_Spec);
8969 pragma Inline (Position);
8970 pragma Inline (Pragma_Argument_Associations);
8971 pragma Inline (Pragmas_After);
8972 pragma Inline (Pragmas_Before);
8973 pragma Inline (Prefix);
8974 pragma Inline (Present_Expr);
8975 pragma Inline (Prev_Ids);
8976 pragma Inline (Print_In_Hex);
8977 pragma Inline (Private_Declarations);
8978 pragma Inline (Private_Present);
8979 pragma Inline (Procedure_To_Call);
8980 pragma Inline (Proper_Body);
8981 pragma Inline (Protected_Definition);
8982 pragma Inline (Protected_Present);
8983 pragma Inline (Raises_Constraint_Error);
8984 pragma Inline (Range_Constraint);
8985 pragma Inline (Range_Expression);
8986 pragma Inline (Real_Range_Specification);
8987 pragma Inline (Realval);
8988 pragma Inline (Reason);
8989 pragma Inline (Record_Extension_Part);
8990 pragma Inline (Redundant_Use);
8991 pragma Inline (Result_Definition);
8992 pragma Inline (Return_Type);
8993 pragma Inline (Reverse_Present);
8994 pragma Inline (Right_Opnd);
8995 pragma Inline (Rounded_Result);
8996 pragma Inline (Scope);
8997 pragma Inline (Select_Alternatives);
8998 pragma Inline (Selector_Name);
8999 pragma Inline (Selector_Names);
9000 pragma Inline (Shift_Count_OK);
9001 pragma Inline (Source_Type);
9002 pragma Inline (Specification);
9003 pragma Inline (Statements);
9004 pragma Inline (Static_Processing_OK);
9005 pragma Inline (Storage_Pool);
9006 pragma Inline (Strval);
9007 pragma Inline (Subtype_Indication);
9008 pragma Inline (Subtype_Mark);
9009 pragma Inline (Subtype_Marks);
9010 pragma Inline (Synchronized_Present);
9011 pragma Inline (Tagged_Present);
9012 pragma Inline (Target_Type);
9013 pragma Inline (Task_Definition);
9014 pragma Inline (Task_Present);
9015 pragma Inline (Then_Actions);
9016 pragma Inline (Then_Statements);
9017 pragma Inline (Triggering_Alternative);
9018 pragma Inline (Triggering_Statement);
9019 pragma Inline (Treat_Fixed_As_Integer);
9020 pragma Inline (TSS_Elist);
9021 pragma Inline (Type_Definition);
9022 pragma Inline (Unit);
9023 pragma Inline (Unknown_Discriminants_Present);
9024 pragma Inline (Unreferenced_In_Spec);
9025 pragma Inline (Variant_Part);
9026 pragma Inline (Variants);
9027 pragma Inline (Visible_Declarations);
9028 pragma Inline (Was_Originally_Stub);
9029 pragma Inline (Zero_Cost_Handling);
9031 pragma Inline (Set_ABE_Is_Certain);
9032 pragma Inline (Set_Abort_Present);
9033 pragma Inline (Set_Abortable_Part);
9034 pragma Inline (Set_Abstract_Present);
9035 pragma Inline (Set_Accept_Handler_Records);
9036 pragma Inline (Set_Accept_Statement);
9037 pragma Inline (Set_Access_Definition);
9038 pragma Inline (Set_Access_To_Subprogram_Definition);
9039 pragma Inline (Set_Access_Types_To_Process);
9040 pragma Inline (Set_Actions);
9041 pragma Inline (Set_Activation_Chain_Entity);
9042 pragma Inline (Set_Acts_As_Spec);
9043 pragma Inline (Set_Actual_Designated_Subtype);
9044 pragma Inline (Set_Aggregate_Bounds);
9045 pragma Inline (Set_Aliased_Present);
9046 pragma Inline (Set_All_Others);
9047 pragma Inline (Set_All_Present);
9048 pragma Inline (Set_Alternatives);
9049 pragma Inline (Set_Ancestor_Part);
9050 pragma Inline (Set_Array_Aggregate);
9051 pragma Inline (Set_Assignment_OK);
9052 pragma Inline (Set_Associated_Node);
9053 pragma Inline (Set_At_End_Proc);
9054 pragma Inline (Set_Attribute_Name);
9055 pragma Inline (Set_Aux_Decls_Node);
9056 pragma Inline (Set_Backwards_OK);
9057 pragma Inline (Set_Bad_Is_Detected);
9058 pragma Inline (Set_Body_To_Inline);
9059 pragma Inline (Set_Body_Required);
9060 pragma Inline (Set_By_Ref);
9061 pragma Inline (Set_Box_Present);
9062 pragma Inline (Set_Char_Literal_Value);
9063 pragma Inline (Set_Chars);
9064 pragma Inline (Set_Check_Address_Alignment);
9065 pragma Inline (Set_Choice_Parameter);
9066 pragma Inline (Set_Choices);
9067 pragma Inline (Set_Compile_Time_Known_Aggregate);
9068 pragma Inline (Set_Component_Associations);
9069 pragma Inline (Set_Component_Clauses);
9070 pragma Inline (Set_Component_Definition);
9071 pragma Inline (Set_Component_Items);
9072 pragma Inline (Set_Component_List);
9073 pragma Inline (Set_Component_Name);
9074 pragma Inline (Set_Condition);
9075 pragma Inline (Set_Condition_Actions);
9076 pragma Inline (Set_Config_Pragmas);
9077 pragma Inline (Set_Constant_Present);
9078 pragma Inline (Set_Constraint);
9079 pragma Inline (Set_Constraints);
9080 pragma Inline (Set_Context_Installed);
9081 pragma Inline (Set_Context_Items);
9082 pragma Inline (Set_Controlling_Argument);
9083 pragma Inline (Set_Conversion_OK);
9084 pragma Inline (Set_Corresponding_Body);
9085 pragma Inline (Set_Corresponding_Formal_Spec);
9086 pragma Inline (Set_Corresponding_Generic_Association);
9087 pragma Inline (Set_Corresponding_Integer_Value);
9088 pragma Inline (Set_Corresponding_Spec);
9089 pragma Inline (Set_Corresponding_Stub);
9090 pragma Inline (Set_Dcheck_Function);
9091 pragma Inline (Set_Debug_Statement);
9092 pragma Inline (Set_Declarations);
9093 pragma Inline (Set_Default_Expression);
9094 pragma Inline (Set_Default_Name);
9095 pragma Inline (Set_Defining_Identifier);
9096 pragma Inline (Set_Defining_Unit_Name);
9097 pragma Inline (Set_Delay_Alternative);
9098 pragma Inline (Set_Delay_Finalize_Attach);
9099 pragma Inline (Set_Delay_Statement);
9100 pragma Inline (Set_Delta_Expression);
9101 pragma Inline (Set_Digits_Expression);
9102 pragma Inline (Set_Discr_Check_Funcs_Built);
9103 pragma Inline (Set_Discrete_Choices);
9104 pragma Inline (Set_Discrete_Range);
9105 pragma Inline (Set_Discrete_Subtype_Definition);
9106 pragma Inline (Set_Discrete_Subtype_Definitions);
9107 pragma Inline (Set_Discriminant_Specifications);
9108 pragma Inline (Set_Discriminant_Type);
9109 pragma Inline (Set_Do_Accessibility_Check);
9110 pragma Inline (Set_Do_Discriminant_Check);
9111 pragma Inline (Set_Do_Length_Check);
9112 pragma Inline (Set_Do_Division_Check);
9113 pragma Inline (Set_Do_Overflow_Check);
9114 pragma Inline (Set_Do_Range_Check);
9115 pragma Inline (Set_Do_Storage_Check);
9116 pragma Inline (Set_Do_Tag_Check);
9117 pragma Inline (Set_Elaborate_Present);
9118 pragma Inline (Set_Elaborate_All_Desirable);
9119 pragma Inline (Set_Elaborate_All_Present);
9120 pragma Inline (Set_Elaborate_Desirable);
9121 pragma Inline (Set_Elaboration_Boolean);
9122 pragma Inline (Set_Else_Actions);
9123 pragma Inline (Set_Else_Statements);
9124 pragma Inline (Set_Elsif_Parts);
9125 pragma Inline (Set_Enclosing_Variant);
9126 pragma Inline (Set_End_Label);
9127 pragma Inline (Set_End_Span);
9128 pragma Inline (Set_Entity);
9129 pragma Inline (Set_Entry_Body_Formal_Part);
9130 pragma Inline (Set_Entry_Call_Alternative);
9131 pragma Inline (Set_Entry_Call_Statement);
9132 pragma Inline (Set_Entry_Direct_Name);
9133 pragma Inline (Set_Entry_Index);
9134 pragma Inline (Set_Entry_Index_Specification);
9135 pragma Inline (Set_Etype);
9136 pragma Inline (Set_Exception_Choices);
9137 pragma Inline (Set_Exception_Junk);
9138 pragma Inline (Set_Exception_Handlers);
9139 pragma Inline (Set_Expansion_Delayed);
9140 pragma Inline (Set_Explicit_Actual_Parameter);
9141 pragma Inline (Set_Explicit_Generic_Actual_Parameter);
9142 pragma Inline (Set_Expression);
9143 pragma Inline (Set_Expressions);
9144 pragma Inline (Set_First_Bit);
9145 pragma Inline (Set_First_Inlined_Subprogram);
9146 pragma Inline (Set_First_Name);
9147 pragma Inline (Set_First_Named_Actual);
9148 pragma Inline (Set_First_Real_Statement);
9149 pragma Inline (Set_First_Subtype_Link);
9150 pragma Inline (Set_Float_Truncate);
9151 pragma Inline (Set_Formal_Type_Definition);
9152 pragma Inline (Set_Forwards_OK);
9153 pragma Inline (Set_From_At_Mod);
9154 pragma Inline (Set_From_Default);
9155 pragma Inline (Set_Generic_Associations);
9156 pragma Inline (Set_Generic_Formal_Declarations);
9157 pragma Inline (Set_Generic_Parent);
9158 pragma Inline (Set_Generic_Parent_Type);
9159 pragma Inline (Set_Handled_Statement_Sequence);
9160 pragma Inline (Set_Handler_List_Entry);
9161 pragma Inline (Set_Has_Created_Identifier);
9162 pragma Inline (Set_Has_Dynamic_Length_Check);
9163 pragma Inline (Set_Has_Dynamic_Range_Check);
9164 pragma Inline (Set_Has_No_Elaboration_Code);
9165 pragma Inline (Set_Has_Priority_Pragma);
9166 pragma Inline (Set_Has_Private_View);
9167 pragma Inline (Set_Has_Storage_Size_Pragma);
9168 pragma Inline (Set_Has_Task_Info_Pragma);
9169 pragma Inline (Set_Has_Task_Name_Pragma);
9170 pragma Inline (Set_Has_Wide_Character);
9171 pragma Inline (Set_Hidden_By_Use_Clause);
9172 pragma Inline (Set_High_Bound);
9173 pragma Inline (Set_Identifier);
9174 pragma Inline (Set_Implicit_With);
9175 pragma Inline (Set_Includes_Infinities);
9176 pragma Inline (Set_Interface_List);
9177 pragma Inline (Set_Interface_Present);
9178 pragma Inline (Set_In_Present);
9179 pragma Inline (Set_Instance_Spec);
9180 pragma Inline (Set_Intval);
9181 pragma Inline (Set_Is_Asynchronous_Call_Block);
9182 pragma Inline (Set_Is_Component_Left_Opnd);
9183 pragma Inline (Set_Is_Component_Right_Opnd);
9184 pragma Inline (Set_Is_Controlling_Actual);
9185 pragma Inline (Set_Is_In_Discriminant_Check);
9186 pragma Inline (Set_Is_Machine_Number);
9187 pragma Inline (Set_Is_Null_Loop);
9188 pragma Inline (Set_Is_Overloaded);
9189 pragma Inline (Set_Is_Power_Of_2_For_Shift);
9190 pragma Inline (Set_Is_Protected_Subprogram_Body);
9191 pragma Inline (Set_Is_Static_Expression);
9192 pragma Inline (Set_Is_Subprogram_Descriptor);
9193 pragma Inline (Set_Is_Task_Allocation_Block);
9194 pragma Inline (Set_Is_Task_Master);
9195 pragma Inline (Set_Iteration_Scheme);
9196 pragma Inline (Set_Itype);
9197 pragma Inline (Set_Kill_Range_Check);
9198 pragma Inline (Set_Last_Bit);
9199 pragma Inline (Set_Last_Name);
9200 pragma Inline (Set_Library_Unit);
9201 pragma Inline (Set_Label_Construct);
9202 pragma Inline (Set_Left_Opnd);
9203 pragma Inline (Set_Limited_View_Installed);
9204 pragma Inline (Set_Limited_Present);
9205 pragma Inline (Set_Literals);
9206 pragma Inline (Set_Loop_Actions);
9207 pragma Inline (Set_Loop_Parameter_Specification);
9208 pragma Inline (Set_Low_Bound);
9209 pragma Inline (Set_Mod_Clause);
9210 pragma Inline (Set_More_Ids);
9211 pragma Inline (Set_Must_Be_Byte_Aligned);
9212 pragma Inline (Set_Must_Not_Freeze);
9213 pragma Inline (Set_Must_Not_Override);
9214 pragma Inline (Set_Must_Override);
9215 pragma Inline (Set_Name);
9216 pragma Inline (Set_Names);
9217 pragma Inline (Set_Next_Entity);
9218 pragma Inline (Set_Next_Named_Actual);
9219 pragma Inline (Set_Next_Use_Clause);
9220 pragma Inline (Set_No_Ctrl_Actions);
9221 pragma Inline (Set_No_Elaboration_Check);
9222 pragma Inline (Set_No_Entities_Ref_In_Spec);
9223 pragma Inline (Set_No_Initialization);
9224 pragma Inline (Set_No_Truncation);
9225 pragma Inline (Set_Null_Present);
9226 pragma Inline (Set_Null_Exclusion_Present);
9227 pragma Inline (Set_Null_Record_Present);
9228 pragma Inline (Set_Object_Definition);
9229 pragma Inline (Set_Original_Discriminant);
9230 pragma Inline (Set_Original_Entity);
9231 pragma Inline (Set_Others_Discrete_Choices);
9232 pragma Inline (Set_Out_Present);
9233 pragma Inline (Set_Parameter_Associations);
9234 pragma Inline (Set_Parameter_Specifications);
9235 pragma Inline (Set_Parameter_List_Truncated);
9236 pragma Inline (Set_Parameter_Type);
9237 pragma Inline (Set_Parent_Spec);
9238 pragma Inline (Set_Position);
9239 pragma Inline (Set_Pragma_Argument_Associations);
9240 pragma Inline (Set_Pragmas_After);
9241 pragma Inline (Set_Pragmas_Before);
9242 pragma Inline (Set_Prefix);
9243 pragma Inline (Set_Present_Expr);
9244 pragma Inline (Set_Prev_Ids);
9245 pragma Inline (Set_Print_In_Hex);
9246 pragma Inline (Set_Private_Declarations);
9247 pragma Inline (Set_Private_Present);
9248 pragma Inline (Set_Procedure_To_Call);
9249 pragma Inline (Set_Proper_Body);
9250 pragma Inline (Set_Protected_Definition);
9251 pragma Inline (Set_Protected_Present);
9252 pragma Inline (Set_Raises_Constraint_Error);
9253 pragma Inline (Set_Range_Constraint);
9254 pragma Inline (Set_Range_Expression);
9255 pragma Inline (Set_Real_Range_Specification);
9256 pragma Inline (Set_Realval);
9257 pragma Inline (Set_Reason);
9258 pragma Inline (Set_Record_Extension_Part);
9259 pragma Inline (Set_Redundant_Use);
9260 pragma Inline (Set_Result_Definition);
9261 pragma Inline (Set_Return_Type);
9262 pragma Inline (Set_Reverse_Present);
9263 pragma Inline (Set_Right_Opnd);
9264 pragma Inline (Set_Rounded_Result);
9265 pragma Inline (Set_Scope);
9266 pragma Inline (Set_Select_Alternatives);
9267 pragma Inline (Set_Selector_Name);
9268 pragma Inline (Set_Selector_Names);
9269 pragma Inline (Set_Shift_Count_OK);
9270 pragma Inline (Set_Source_Type);
9271 pragma Inline (Set_Specification);
9272 pragma Inline (Set_Statements);
9273 pragma Inline (Set_Static_Processing_OK);
9274 pragma Inline (Set_Storage_Pool);
9275 pragma Inline (Set_Strval);
9276 pragma Inline (Set_Subtype_Indication);
9277 pragma Inline (Set_Subtype_Mark);
9278 pragma Inline (Set_Subtype_Marks);
9279 pragma Inline (Set_Synchronized_Present);
9280 pragma Inline (Set_Tagged_Present);
9281 pragma Inline (Set_Target_Type);
9282 pragma Inline (Set_Task_Definition);
9283 pragma Inline (Set_Task_Present);
9284 pragma Inline (Set_Then_Actions);
9285 pragma Inline (Set_Then_Statements);
9286 pragma Inline (Set_Triggering_Alternative);
9287 pragma Inline (Set_Triggering_Statement);
9288 pragma Inline (Set_Treat_Fixed_As_Integer);
9289 pragma Inline (Set_TSS_Elist);
9290 pragma Inline (Set_Type_Definition);
9291 pragma Inline (Set_Unit);
9292 pragma Inline (Set_Unknown_Discriminants_Present);
9293 pragma Inline (Set_Unreferenced_In_Spec);
9294 pragma Inline (Set_Variant_Part);
9295 pragma Inline (Set_Variants);
9296 pragma Inline (Set_Visible_Declarations);
9297 pragma Inline (Set_Was_Originally_Stub);
9298 pragma Inline (Set_Zero_Cost_Handling);
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