------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S I N F O --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2013, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- . --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package defines the structure of the abstract syntax tree. The Tree
-- package provides a basic tree structure. Sinfo describes how this structure
-- is used to represent the syntax of an Ada program.
-- The grammar in the RM is followed very closely in the tree design, and is
-- repeated as part of this source file.
-- The tree contains not only the full syntactic representation of the
-- program, but also the results of semantic analysis. In particular, the
-- nodes for defining identifiers, defining character literals and defining
-- operator symbols, collectively referred to as entities, represent what
-- would normally be regarded as the symbol table information. In addition a
-- number of the tree nodes contain semantic information.
-- WARNING: Several files are automatically generated from this package.
-- See below for details.
with Namet; use Namet;
with Types; use Types;
with Uintp; use Uintp;
with Urealp; use Urealp;
package Sinfo is
---------------------------------
-- Making Changes to This File --
---------------------------------
-- If changes are made to this file, a number of related steps must be
-- carried out to ensure consistency. First, if a field access function is
-- added, it appears in these places:
-- In sinfo.ads:
-- The documentation associated with the field (if semantic)
-- The documentation associated with the node
-- The spec of the access function
-- The spec of the set procedure
-- The entries in Is_Syntactic_Field
-- The pragma Inline for the access function
-- The pragma Inline for the set procedure
-- In sinfo.adb:
-- The body of the access function
-- The body of the set procedure
-- The field chosen must be consistent in all places, and, for a node that
-- is a subexpression, must not overlap any of the standard expression
-- fields.
-- In addition, if any of the standard expression fields is changed, then
-- the utility program which creates the Treeprs spec (in file treeprs.ads)
-- must be updated appropriately, since it special cases expression fields.
-- If a new tree node is added, then the following changes are made
-- Add it to the documentation in the appropriate place
-- Add its fields to this documentation section
-- Define it in the appropriate classification in Node_Kind
-- In the body (sinfo), add entries to the access functions for all
-- its fields (except standard expression fields) to include the new
-- node in the checks.
-- Add an appropriate section to the case statement in sprint.adb
-- Add an appropriate section to the case statement in sem.adb
-- Add an appropriate section to the case statement in exp_util.adb
-- (Insert_Actions procedure)
-- For a subexpression, add an appropriate section to the case
-- statement in sem_eval.adb
-- For a subexpression, add an appropriate section to the case
-- statement in sem_res.adb
-- Finally, four utility programs must be run:
-- (Optional.) Run CSinfo to check that you have made the changes
-- consistently. It checks most of the rules given above. This utility
-- reads sinfo.ads and sinfo.adb and generates a report to standard
-- output. This step is optional because XSinfo runs CSinfo.
-- Run XSinfo to create sinfo.h, the corresponding C header. This
-- utility reads sinfo.ads and generates sinfo.h. Note that it does
-- not need to read sinfo.adb, since the contents of the body are
-- algorithmically determinable from the spec.
-- Run XTreeprs to create treeprs.ads, an updated version of the module
-- that is used to drive the tree print routine. This utility reads (but
-- does not modify) treeprs.adt, the template that provides the basic
-- structure of the file, and then fills in the data from the comments
-- in sinfo.ads.
-- Run XNmake to create nmake.ads and nmake.adb, the package body and
-- spec of the Nmake package which contains functions for constructing
-- nodes.
-- The above steps are done automatically by the build scripts when you do
-- a full bootstrap.
-- Note: sometime we could write a utility that actually generated the body
-- of sinfo from the spec instead of simply checking it, since, as noted
-- above, the contents of the body can be determined from the spec.
--------------------------------
-- Implicit Nodes in the Tree --
--------------------------------
-- Generally the structure of the tree very closely follows the grammar as
-- defined in the RM. However, certain nodes are omitted to save space and
-- simplify semantic processing. Two general classes of such omitted nodes
-- are as follows:
-- If the only possibilities for a non-terminal are one or more other
-- non-terminals (i.e. the rule is a "skinny" rule), then usually the
-- corresponding node is omitted from the tree, and the target construct
-- appears directly. For example, a real type definition is either
-- floating point definition or a fixed point definition. No explicit node
-- appears for real type definition. Instead either the floating point
-- definition or fixed point definition appears directly.
-- If a non-terminal corresponds to a list of some other non-terminal
-- (possibly with separating punctuation), then usually it is omitted from
-- the tree, and a list of components appears instead. For example,
-- sequence of statements does not appear explicitly in the tree. Instead
-- a list of statements appears directly.
-- Some additional cases of omitted nodes occur and are documented
-- individually. In particular, many nodes are omitted in the tree
-- generated for an expression.
-------------------------------------------
-- Handling of Defining Identifier Lists --
-------------------------------------------
-- In several declarative forms in the syntax, lists of defining
-- identifiers appear (object declarations, component declarations, number
-- declarations etc.)
-- The semantics of such statements are equivalent to a series of identical
-- declarations of single defining identifiers (except that conformance
-- checks require the same grouping of identifiers in the parameter case).
-- To simplify semantic processing, the parser breaks down such multiple
-- declaration cases into sequences of single declarations, duplicating
-- type and initialization information as required. The flags More_Ids and
-- Prev_Ids are used to record the original form of the source in the case
-- where the original source used a list of names, More_Ids being set on
-- all but the last name and Prev_Ids being set on all but the first name.
-- These flags are used to reconstruct the original source (e.g. in the
-- Sprint package), and also are included in the conformance checks, but
-- otherwise have no semantic significance.
-- Note: the reason that we use More_Ids and Prev_Ids rather than
-- First_Name and Last_Name flags is so that the flags are off in the
-- normal one identifier case, which minimizes tree print output.
-----------------------
-- Use of Node Lists --
-----------------------
-- With a few exceptions, if a construction of the form {non-terminal}
-- appears in the tree, lists are used in the corresponding tree node (see
-- package Nlists for handling of node lists). In this case a field of the
-- parent node points to a list of nodes for the non-terminal. The field
-- name for such fields has a plural name which always ends in "s". For
-- example, a case statement has a field Alternatives pointing to list of
-- case statement alternative nodes.
-- Only fields pointing to lists have names ending in "s", so generally the
-- structure is strongly typed, fields not ending in s point to single
-- nodes, and fields ending in s point to lists.
-- The following example shows how a traversal of a list is written. We
-- suppose here that Stmt points to a N_Case_Statement node which has a
-- list field called Alternatives:
-- Alt := First (Alternatives (Stmt));
-- while Present (Alt) loop
-- ..
-- -- processing for case statement alternative Alt
-- ..
-- Alt := Next (Alt);
-- end loop;
-- The Present function tests for Empty, which in this case signals the end
-- of the list. First returns Empty immediately if the list is empty.
-- Present is defined in Atree, First and Next are defined in Nlists.
-- The exceptions to this rule occur with {DEFINING_IDENTIFIERS} in all
-- contexts, which is handled as described in the previous section, and
-- with {,library_unit_NAME} in the N_With_Clause mode, which is handled
-- using the First_Name and Last_Name flags, as further detailed in the
-- description of the N_With_Clause node.
-------------
-- Pragmas --
-------------
-- Pragmas can appear in many different context, but are not included in
-- the grammar. Still they must appear in the tree, so they can be properly
-- processed.
-- Two approaches are used. In some cases, an extra field is defined in an
-- appropriate node that contains a list of pragmas appearing in the
-- expected context. For example pragmas can appear before an
-- Accept_Alternative in a Selective_Accept_Statement, and these pragmas
-- appear in the Pragmas_Before field of the N_Accept_Alternative node.
-- The other approach is to simply allow pragmas to appear in syntactic
-- lists where the grammar (of course) does not include the possibility.
-- For example, the Variants field of an N_Variant_Part node points to a
-- list that can contain both N_Pragma and N_Variant nodes.
-- To make processing easier in the latter case, the Nlists package
-- provides a set of routines (First_Non_Pragma, Last_Non_Pragma,
-- Next_Non_Pragma, Prev_Non_Pragma) that allow such lists to be handled
-- ignoring all pragmas.
-- In the case of the variants list, we can either write:
-- Variant := First (Variants (N));
-- while Present (Variant) loop
-- ...
-- Variant := Next (Variant);
-- end loop;
-- or
-- Variant := First_Non_Pragma (Variants (N));
-- while Present (Variant) loop
-- ...
-- Variant := Next_Non_Pragma (Variant);
-- end loop;
-- In the first form of the loop, Variant can either be an N_Pragma or an
-- N_Variant node. In the second form, Variant can only be N_Variant since
-- all pragmas are skipped.
---------------------
-- Optional Fields --
---------------------
-- Fields which correspond to a section of the syntax enclosed in square
-- brackets are generally omitted (and the corresponding field set to Empty
-- for a node, or No_List for a list). The documentation of such fields
-- notes these cases. One exception to this rule occurs in the case of
-- possibly empty statement sequences (such as the sequence of statements
-- in an entry call alternative). Such cases appear in the syntax rules as
-- [SEQUENCE_OF_STATEMENTS] and the fields corresponding to such optional
-- statement sequences always contain an empty list (not No_List) if no
-- statements are present.
-- Note: the utility program that constructs the body and spec of the Nmake
-- package relies on the format of the comments to determine if a field
-- should have a default value in the corresponding make routine. The rule
-- is that if the first line of the description of the field contains the
-- string "(set to xxx if", then a default value of xxx is provided for
-- this field in the corresponding Make_yyy routine.
-----------------------------------
-- Note on Body/Spec Terminology --
-----------------------------------
-- In informal discussions about Ada, it is customary to refer to package
-- and subprogram specs and bodies. However, this is not technically
-- correct, what is normally referred to as a spec or specification is in
-- fact a package declaration or subprogram declaration. We are careful in
-- GNAT to use the correct terminology and in particular, the full word
-- specification is never used as an incorrect substitute for declaration.
-- The structure and terminology used in the tree also reflects the grammar
-- and thus uses declaration and specification in the technically correct
-- manner.
-- However, there are contexts in which the informal terminology is useful.
-- We have the word "body" to refer to the Interp_Etype declared by the
-- declaration of a unit body, and in some contexts we need similar term to
-- refer to the entity declared by the package or subprogram declaration,
-- and simply using declaration can be confusing since the body also has a
-- declaration.
-- An example of such a context is the link between the package body and
-- its declaration. With_Declaration is confusing, since the package body
-- itself is a declaration.
-- To deal with this problem, we reserve the informal term Spec, i.e. the
-- popular abbreviation used in this context, to refer to the entity
-- declared by the package or subprogram declaration. So in the above
-- example case, the field in the body is called With_Spec.
-- Another important context for the use of the word Spec is in error
-- messages, where a hyper-correct use of declaration would be confusing to
-- a typical Ada programmer, and even for an expert programmer can cause
-- confusion since the body has a declaration as well.
-- So, to summarize:
-- Declaration always refers to the syntactic entity that is called
-- a declaration. In particular, subprogram declaration
-- and package declaration are used to describe the
-- syntactic entity that includes the semicolon.
-- Specification always refers to the syntactic entity that is called
-- a specification. In particular, the terms procedure
-- specification, function specification, package
-- specification, subprogram specification always refer
-- to the syntactic entity that has no semicolon.
-- Spec is an informal term, used to refer to the entity
-- that is declared by a task declaration, protected
-- declaration, generic declaration, subprogram
-- declaration or package declaration.
-- This convention is followed throughout the GNAT documentation
-- both internal and external, and in all error message text.
------------------------
-- Internal Use Nodes --
------------------------
-- These are Node_Kind settings used in the internal implementation which
-- are not logically part of the specification.
-- N_Unused_At_Start
-- Completely unused entry at the start of the enumeration type. This
-- is inserted so that no legitimate value is zero, which helps to get
-- better debugging behavior, since zero is a likely uninitialized value).
-- N_Unused_At_End
-- Completely unused entry at the end of the enumeration type. This is
-- handy so that arrays with Node_Kind as the index type have an extra
-- entry at the end (see for example the use of the Pchar_Pos_Array in
-- Treepr, where the extra entry provides the limit value when dealing with
-- the last used entry in the array).
-----------------------------------------
-- Note on the settings of Sloc fields --
-----------------------------------------
-- The Sloc field of nodes that come from the source is set by the parser.
-- For internal nodes, and nodes generated during expansion the Sloc is
-- usually set in the call to the constructor for the node. In general the
-- Sloc value chosen for an internal node is the Sloc of the source node
-- whose processing is responsible for the expansion. For example, the Sloc
-- of an inherited primitive operation is the Sloc of the corresponding
-- derived type declaration.
-- For the nodes of a generic instantiation, the Sloc value is encoded to
-- represent both the original Sloc in the generic unit, and the Sloc of
-- the instantiation itself. See Sinput.ads for details.
-- Subprogram instances create two callable entities: one is the visible
-- subprogram instance, and the other is an anonymous subprogram nested
-- within a wrapper package that contains the renamings for the actuals.
-- Both of these entities have the Sloc of the defining entity in the
-- instantiation node. This simplifies some ASIS queries.
-----------------------
-- Field Definitions --
-----------------------
-- In the following node definitions, all fields, both syntactic and
-- semantic, are documented. The one exception is in the case of entities
-- (defining identifiers, character literals and operator symbols), where
-- the usage of the fields depends on the entity kind. Entity fields are
-- fully documented in the separate package Einfo.
-- In the node definitions, three common sets of fields are abbreviated to
-- save both space in the documentation, and also space in the string
-- (defined in Tree_Print_Strings) used to print trees. The following
-- abbreviations are used:
-- Note: the utility program that creates the Treeprs spec (in the file
-- xtreeprs.adb) knows about the special fields here, so it must be
-- modified if any change is made to these fields.
-- "plus fields for binary operator"
-- Chars (Name1) Name_Id for the operator
-- Left_Opnd (Node2) left operand expression
-- Right_Opnd (Node3) right operand expression
-- Entity (Node4-Sem) defining entity for operator
-- Associated_Node (Node4-Sem) for generic processing
-- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
-- Has_Private_View (Flag11-Sem) set in generic units.
-- "plus fields for unary operator"
-- Chars (Name1) Name_Id for the operator
-- Right_Opnd (Node3) right operand expression
-- Entity (Node4-Sem) defining entity for operator
-- Associated_Node (Node4-Sem) for generic processing
-- Do_Overflow_Check (Flag17-Sem) set if overflow check needed
-- Has_Private_View (Flag11-Sem) set in generic units.
-- "plus fields for expression"
-- Paren_Count number of parentheses levels
-- Etype (Node5-Sem) type of the expression
-- Is_Overloaded (Flag5-Sem) >1 type interpretation exists
-- Is_Static_Expression (Flag6-Sem) set for static expression
-- Raises_Constraint_Error (Flag7-Sem) evaluation raises CE
-- Must_Not_Freeze (Flag8-Sem) set if must not freeze
-- Do_Range_Check (Flag9-Sem) set if a range check needed
-- Has_Dynamic_Length_Check (Flag10-Sem) set if length check inserted
-- Has_Dynamic_Range_Check (Flag12-Sem) set if range check inserted
-- Assignment_OK (Flag15-Sem) set if modification is OK
-- Is_Controlling_Actual (Flag16-Sem) set for controlling argument
-- Note: see under (EXPRESSION) for further details on the use of
-- the Paren_Count field to record the number of parentheses levels.
-- Node_Kind is the type used in the Nkind field to indicate the node kind.
-- The actual definition of this type is given later (the reason for this
-- is that we want the descriptions ordered by logical chapter in the RM,
-- but the type definition is reordered to facilitate the definition of
-- some subtype ranges. The individual descriptions of the nodes show how
-- the various fields are used in each node kind, as well as providing
-- logical names for the fields. Functions and procedures are provided for
-- accessing and setting these fields using these logical names.
-----------------------
-- Gigi Restrictions --
-----------------------
-- The tree passed to Gigi is more restricted than the general tree form.
-- For example, as a result of expansion, most of the tasking nodes can
-- never appear. For each node to which either a complete or partial
-- restriction applies, a note entitled "Gigi restriction" appears which
-- documents the restriction.
-- Note that most of these restrictions apply only to trees generated when
-- code is being generated, since they involved expander actions that
-- destroy the tree.
---------------
-- ASIS Mode --
---------------
-- When a file is compiled in ASIS mode (-gnatct), expansion is skipped,
-- and the analysis must generate a tree in a form that meets all ASIS
-- requirements.
-- ASIS must be able to recover the original tree that corresponds to the
-- source. It relies heavily on Original_Node for this purpose, which as
-- described in Atree, records the history when a node is rewritten. ASIS
-- uses Original_Node to recover the original node before the Rewrite.
-- At least in ASIS mode (not really important in non-ASIS mode), when
-- N1 is rewritten as N2:
-- The subtree rooted by the original node N1 should be fully decorated,
-- i.e. all semantic fields noted in sinfo.ads should be set properly
-- and any referenced entities should be complete (with exceptions for
-- representation information, noted below).
-- For all the direct descendants of N1 (original node) their Parent
-- links should point not to N1, but to N2 (rewriting node).
-- The Parent links of rewritten nodes (N1 in this example) are set in
-- some cases (to point to the rewritten parent), but in other cases
-- they are set to Empty. This needs sorting out ??? It would be much
-- cleaner if they could always be set in the original node ???
-- Representation Information
-- For the purposes of the data description annex, the representation
-- information for source declared entities must be complete in the
-- ASIS tree.
-- This requires that the front end call the back end (gigi/gcc) in
-- a special "back annotate only" mode to obtain information on layout
-- from the back end.
-- For the purposes of this special "back annotate only" mode, the
-- requirements that would normally need to be met to generate code
-- are relaxed as follows:
-- Anonymous types need not have full representation information (e.g.
-- sizes need not be set for types where the front end would normally
-- set the sizes), since anonymous types can be ignored in this mode.
-- In this mode, gigi will see at least fragments of a fully annotated
-- unexpanded tree. This means that it will encounter nodes it does
-- not normally handle (such as stubs, task bodies etc). It should
-- simply ignore these nodes, since they are not relevant to the task
-- of back annotating representation information.
--------------------
-- GNATprove Mode --
--------------------
-- When a file is compiled in GNATprove mode (-gnatd.F), a very light
-- expansion is performed and the analysis must generate a tree in a
-- form that meets additional requirements.
-- This light expansion does two transformations of the tree, that cannot
-- be postponed after the frontend semantic analysis:
-- 1. Replace object renamings by renamed object. This requires the
-- introdtion of temporaries at the point of the renaming, which must
-- be properly analyzed.
-- 2. Fully qualify entity names. This is needed to generate suitable
-- local effects and call-graphs in ALI files, with the completely
-- qualified names (in particular the suffix to distinguish homonyms).
-- The tree after this light expansion should be fully analyzed
-- semantically, which sometimes requires the insertion of semantic
-- pre-analysis, for example for subprogram contracts and pragma
-- check/assert. In particular, all expression must have their proper type,
-- and semantic links should be set between tree nodes (partial to full
-- view, etc.) Some kinds of nodes should be either absent, or can be
-- ignored by the formal verification backend:
-- N_Object_Renaming_Declaration: can be ignored safely
-- N_Expression_Function: absent (rewritten)
-- N_Expression_With_Actions: absent (not generated)
-- SPARK cross-references are generated from the regular cross-references
-- (used for browsing and code understanding) and additional references
-- collected during semantic analysis, in particular on all dereferences.
-- These SPARK cross-references are output in a separate section of ALI
-- files, as described in spark_xrefs.adb. They are the basis for the
-- computation of data dependences in GNATprove. This implies that all
-- cross-references should be generated in this mode, even those that would
-- not make sense from a user point-of-view, and that cross-references that
-- do not lead to data dependences for subprograms can be safely ignored.
------------------------
-- Common Flag Fields --
------------------------
-- The following flag fields appear in all nodes:
-- Analyzed
-- This flag is used to indicate that a node (and all its children have
-- been analyzed. It is used to avoid reanalysis of a node that has
-- already been analyzed, both for efficiency and functional correctness
-- reasons.
-- Comes_From_Source
-- This flag is set if the node comes directly from an explicit construct
-- in the source. It is normally on for any nodes built by the scanner or
-- parser from the source program, with the exception that in a few cases
-- the parser adds nodes to normalize the representation (in particular
-- a null statement is added to a package body if there is no begin/end
-- initialization section.
--
-- Most nodes inserted by the analyzer or expander are not considered
-- as coming from source, so the flag is off for such nodes. In a few
-- cases, the expander constructs nodes closely equivalent to nodes
-- from the source program (e.g. the allocator built for build-in-place
-- case), and the Comes_From_Source flag is deliberately set.
-- Error_Posted
-- This flag is used to avoid multiple error messages being posted on or
-- referring to the same node. This flag is set if an error message
-- refers to a node or is posted on its source location, and has the
-- effect of inhibiting further messages involving this same node.
------------------------------------
-- Description of Semantic Fields --
------------------------------------
-- The meaning of the syntactic fields is generally clear from their names
-- without any further description, since the names are chosen to
-- correspond very closely to the syntax in the reference manual. This
-- section describes the usage of the semantic fields, which are used to
-- contain additional information determined during semantic analysis.
-- ABE_Is_Certain (Flag18-Sem)
-- This flag is set in an instantiation node or a call node is determined
-- to be sure to raise an ABE. This is used to trigger special handling
-- of such cases, particularly in the instantiation case where we avoid
-- instantiating the body if this flag is set. This flag is also present
-- in an N_Formal_Package_Declaration_Node since formal package
-- declarations are treated like instantiations, but it is always set to
-- False in this context.
-- Accept_Handler_Records (List5-Sem)
-- This field is present only in an N_Accept_Alternative node. It is used
-- to temporarily hold the exception handler records from an accept
-- statement in a selective accept. These exception handlers will
-- eventually be placed in the Handler_Records list of the procedure
-- built for this accept (see Expand_N_Selective_Accept procedure in
-- Exp_Ch9 for further details).
-- Access_Types_To_Process (Elist2-Sem)
-- Present in N_Freeze_Entity nodes for Incomplete or private types.
-- Contains the list of access types which may require specific treatment
-- when the nature of the type completion is completely known. An example
-- of such treatment is the generation of the associated_final_chain.
-- Actions (List1-Sem)
-- This field contains a sequence of actions that are associated with the
-- node holding the field. See the individual node types for details of
-- how this field is used, as well as the description of the specific use
-- for a particular node type.
-- Activation_Chain_Entity (Node3-Sem)
-- This is used in tree nodes representing task activators (blocks,
-- subprogram bodies, package declarations, and task bodies). It is
-- initially Empty, and then gets set to point to the entity for the
-- declared Activation_Chain variable when the first task is declared.
-- When tasks are declared in the corresponding declarative region this
-- entity is located by name (its name is always _Chain) and the declared
-- tasks are added to the chain. Note that N_Extended_Return_Statement
-- does not have this attribute, although it does have an activation
-- chain. This chain is used to store the tasks temporarily, and is not
-- used for activating them. On successful completion of the return
-- statement, the tasks are moved to the caller's chain, and the caller
-- activates them.
-- Acts_As_Spec (Flag4-Sem)
-- A flag set in the N_Subprogram_Body node for a subprogram body which
-- is acting as its own spec, except in the case of a library level
-- subprogram, in which case the flag is set on the parent compilation
-- unit node instead.
-- Actual_Designated_Subtype (Node4-Sem)
-- Present in N_Free_Statement and N_Explicit_Dereference nodes. If gigi
-- needs to known the dynamic constrained subtype of the designated
-- object, this attribute is set to that type. This is done for
-- N_Free_Statements for access-to-classwide types and access to
-- unconstrained packed array types, and for N_Explicit_Dereference when
-- the designated type is an unconstrained packed array and the
-- dereference is the prefix of a 'Size attribute reference.
-- Address_Warning_Posted (Flag18-Sem)
-- Present in N_Attribute_Definition nodes. Set to indicate that we have
-- posted a warning for the address clause regarding size or alignment
-- issues. Used to inhibit multiple redundant messages.
-- Aggregate_Bounds (Node3-Sem)
-- Present in array N_Aggregate nodes. If the bounds of the aggregate are
-- known at compile time, this field points to an N_Range node with those
-- bounds. Otherwise Empty.
-- All_Others (Flag11-Sem)
-- Present in an N_Others_Choice node. This flag is set for an others
-- exception where all exceptions are to be caught, even those that are
-- not normally handled (in particular the tasking abort signal). This
-- is used for translation of the at end handler into a normal exception
-- handler.
-- Aspect_Rep_Item (Node2-Sem)
-- Present in N_Aspect_Specification nodes. Points to the corresponding
-- pragma/attribute definition node used to process the aspect.
-- Assignment_OK (Flag15-Sem)
-- This flag is set in a subexpression node for an object, indicating
-- that the associated object can be modified, even if this would not
-- normally be permissible (either by direct assignment, or by being
-- passed as an out or in-out parameter). This is used by the expander
-- for a number of purposes, including initialization of constants and
-- limited type objects (such as tasks), setting discriminant fields,
-- setting tag values, etc. N_Object_Declaration nodes also have this
-- flag defined. Here it is used to indicate that an initialization
-- expression is valid, even where it would normally not be allowed
-- (e.g. where the type involved is limited).
-- Associated_Node (Node4-Sem)
-- Present in nodes that can denote an entity: identifiers, character
-- literals, operator symbols, expanded names, operator nodes, and
-- attribute reference nodes (all these nodes have an Entity field).
-- This field is also present in N_Aggregate, N_Selected_Component, and
-- N_Extension_Aggregate nodes. This field is used in generic processing
-- to create links between the generic template and the generic copy.
-- See Sem_Ch12.Get_Associated_Node for full details. Note that this
-- field overlaps Entity, which is fine, since, as explained in Sem_Ch12,
-- the normal function of Entity is not required at the point where the
-- Associated_Node is set. Note also, that in generic templates, this
-- means that the Entity field does not necessarily point to an Entity.
-- Since the back end is expected to ignore generic templates, this is
-- harmless.
-- Atomic_Sync_Required (Flag14-Sem)
-- This flag is set on a node for which atomic synchronization is
-- required for the corresponding reference or modification.
-- At_End_Proc (Node1)
-- This field is present in an N_Handled_Sequence_Of_Statements node.
-- It contains an identifier reference for the cleanup procedure to be
-- called. See description of this node for further details.
-- Backwards_OK (Flag6-Sem)
-- A flag present in the N_Assignment_Statement node. It is used only
-- if the type being assigned is an array type, and is set if analysis
-- determines that it is definitely safe to do the copy backwards, i.e.
-- starting at the highest addressed element. This is the case if either
-- the operands do not overlap, or they may overlap, but if they do,
-- then the left operand is at a higher address than the right operand.
--
-- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
-- means that the front end could not determine that either direction is
-- definitely safe, and a runtime check may be required if the backend
-- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
-- set, it means that the front end can assure no overlap of operands.
-- Body_To_Inline (Node3-Sem)
-- present in subprogram declarations. Denotes analyzed but unexpanded
-- body of subprogram, to be used when inlining calls. Present when the
-- subprogram has an Inline pragma and inlining is enabled. If the
-- declaration is completed by a renaming_as_body, and the renamed en-
-- tity is a subprogram, the Body_To_Inline is the name of that entity,
-- which is used directly in later calls to the original subprogram.
-- Body_Required (Flag13-Sem)
-- A flag that appears in the N_Compilation_Unit node indicating that
-- the corresponding unit requires a body. For the package case, this
-- indicates that a completion is required. In Ada 95, if the flag is not
-- set for the package case, then a body may not be present. In Ada 83,
-- if the flag is not set for the package case, then body is optional.
-- For a subprogram declaration, the flag is set except in the case where
-- a pragma Import or Interface applies, in which case no body is
-- permitted (in Ada 83 or Ada 95).
-- By_Ref (Flag5-Sem)
-- Present in N_Simple_Return_Statement and N_Extended_Return_Statement,
-- this flag is set when the returned expression is already allocated on
-- the secondary stack and thus the result is passed by reference rather
-- than copied another time.
-- Check_Address_Alignment (Flag11-Sem)
-- A flag present in N_Attribute_Definition clause for a 'Address
-- attribute definition. This flag is set if a dynamic check should be
-- generated at the freeze point for the entity to which this address
-- clause applies. The reason that we need this flag is that we want to
-- check for range checks being suppressed at the point where the
-- attribute definition clause is given, rather than testing this at the
-- freeze point.
-- Comes_From_Extended_Return_Statement (Flag18-Sem)
-- Present in N_Simple_Return_Statement nodes. True if this node was
-- constructed as part of the N_Extended_Return_Statement expansion.
-- Compile_Time_Known_Aggregate (Flag18-Sem)
-- Present in N_Aggregate nodes. Set for aggregates which can be fully
-- evaluated at compile time without raising constraint error. Such
-- aggregates can be passed as is the back end without any expansion.
-- See Exp_Aggr for specific conditions under which this flag gets set.
-- Componentwise_Assignment (Flag14-Sem)
-- Present in N_Assignment_Statement nodes. Set for a record assignment
-- where all that needs doing is to expand it into component-by-component
-- assignments. This is used internally for the case of tagged types with
-- rep clauses, where we need to avoid recursion (we don't want to try to
-- generate a call to the primitive operation, because this is the case
-- where we are compiling the primitive operation). Note that when we are
-- expanding component assignments in this case, we never assign the _tag
-- field, but we recursively assign components of the parent type.
-- Condition_Actions (List3-Sem)
-- This field appears in else-if nodes and in the iteration scheme node
-- for while loops. This field is only used during semantic processing to
-- temporarily hold actions inserted into the tree. In the tree passed
-- to gigi, the condition actions field is always set to No_List. For
-- details on how this field is used, see the routine Insert_Actions in
-- package Exp_Util, and also the expansion routines for the relevant
-- nodes.
-- Context_Pending (Flag16-Sem)
-- This field appears in Compilation_Unit nodes, to indicate that the
-- context of the unit is being compiled. Used to detect circularities
-- that are not otherwise detected by the loading mechanism. Such
-- circularities can occur in the presence of limited and non-limited
-- with_clauses that mention the same units.
-- Controlling_Argument (Node1-Sem)
-- This field is set in procedure and function call nodes if the call
-- is a dispatching call (it is Empty for a non-dispatching call). It
-- indicates the source of the call's controlling tag. For procedure
-- calls, the Controlling_Argument is one of the actuals. For function
-- that has a dispatching result, it is an entity in the context of the
-- call that can provide a tag, or else it is the tag of the root type
-- of the class. It can also specify a tag directly rather than being a
-- tagged object. The latter is needed by the implementations of AI-239
-- and AI-260.
-- Conversion_OK (Flag14-Sem)
-- A flag set on type conversion nodes to indicate that the conversion
-- is to be considered as being valid, even though it is the case that
-- the conversion is not valid Ada. This is used for attributes Enum_Rep,
-- Fixed_Value and Integer_Value, for internal conversions done for
-- fixed-point operations, and for certain conversions for calls to
-- initialization procedures. If Conversion_OK is set, then Etype must be
-- set (the analyzer assumes that Etype has been set). For the case of
-- fixed-point operands, it also indicates that the conversion is to be
-- direct conversion of the underlying integer result, with no regard to
-- the small operand.
-- Convert_To_Return_False (Flag13-Sem)
-- Present in N_Raise_Expression nodes that appear in the body of the
-- special predicateM function used to test a predicate in the context
-- of a membership test, where raise expression results in returning a
-- value of False rather than raising an exception.
-- Corresponding_Aspect (Node3-Sem)
-- Present in N_Pragma node. Used to point back to the source aspect from
-- the corresponding pragma. This field is Empty for source pragmas.
-- Corresponding_Body (Node5-Sem)
-- This field is set in subprogram declarations, package declarations,
-- entry declarations of protected types, and in generic units. It points
-- to the defining entity for the corresponding body (NOT the node for
-- the body itself).
-- Corresponding_Formal_Spec (Node3-Sem)
-- This field is set in subprogram renaming declarations, where it points
-- to the defining entity for a formal subprogram in the case where the
-- renaming corresponds to a generic formal subprogram association in an
-- instantiation. The field is Empty if the renaming does not correspond
-- to such a formal association.
-- Corresponding_Generic_Association (Node5-Sem)
-- This field is defined for object declarations and object renaming
-- declarations. It is set for the declarations within an instance that
-- map generic formals to their actuals. If set, the field points to
-- a generic_association which is the original parent of the expression
-- or name appearing in the declaration. This simplifies ASIS queries.
-- Corresponding_Integer_Value (Uint4-Sem)
-- This field is set in real literals of fixed-point types (it is not
-- used for floating-point types). It contains the integer value used
-- to represent the fixed-point value. It is also set on the universal
-- real literals used to represent bounds of fixed-point base types
-- and their first named subtypes.
-- Corresponding_Spec (Node5-Sem)
-- This field is set in subprogram, package, task, and protected body
-- nodes, where it points to the defining entity in the corresponding
-- spec. The attribute is also set in N_With_Clause nodes where it points
-- to the defining entity for the with'ed spec, and in a subprogram
-- renaming declaration when it is a Renaming_As_Body. The field is Empty
-- if there is no corresponding spec, as in the case of a subprogram body
-- that serves as its own spec.
--
-- In Ada 2012, Corresponding_Spec is set on expression functions that
-- complete a subprogram declaration.
-- Corresponding_Spec_Of_Stub (Node2-Sem)
-- This field is present in subprogram, package, task and protected body
-- stubs where it points to the corresponding spec of the stub. Due to
-- clashes in the structure of nodes, we cannot use Corresponding_Spec.
-- Corresponding_Stub (Node3-Sem)
-- This field is present in an N_Subunit node. It holds the node in
-- the parent unit that is the stub declaration for the subunit. It is
-- set when analysis of the stub forces loading of the proper body. If
-- expansion of the proper body creates new declarative nodes, they are
-- inserted at the point of the corresponding_stub.
-- Dcheck_Function (Node5-Sem)
-- This field is present in an N_Variant node, It references the entity
-- for the discriminant checking function for the variant.
-- Default_Expression (Node5-Sem)
-- This field is Empty if there is no default expression. If there is a
-- simple default expression (one with no side effects), then this field
-- simply contains a copy of the Expression field (both point to the tree
-- for the default expression). Default_Expression is used for
-- conformance checking.
-- Default_Storage_Pool (Node3-Sem)
-- This field is present in N_Compilation_Unit_Aux nodes. It is set to a
-- copy of Opt.Default_Pool at the end of the compilation unit. See
-- package Opt for details. This is used for inheriting the
-- Default_Storage_Pool in child units.
-- Discr_Check_Funcs_Built (Flag11-Sem)
-- This flag is present in N_Full_Type_Declaration nodes. It is set when
-- discriminant checking functions are constructed. The purpose is to
-- avoid attempting to set these functions more than once.
-- Do_Accessibility_Check (Flag13-Sem)
-- This flag is set on N_Parameter_Specification nodes to indicate
-- that an accessibility check is required for the parameter. It is
-- not yet decided who takes care of this check (TBD ???).
-- Do_Discriminant_Check (Flag1-Sem)
-- This flag is set on N_Selected_Component nodes to indicate that a
-- discriminant check is required using the discriminant check routine
-- associated with the selector. The actual check is generated by the
-- expander when processing selected components. In the case of
-- Unchecked_Union, the flag is also set, but no discriminant check
-- routine is associated with the selector, and the expander does not
-- generate a check. This flag is also present in assignment statements
-- (and set if the assignment requires a discriminant check), and in type
-- conversion nodes (and set if the conversion requires a check).
-- Do_Division_Check (Flag13-Sem)
-- This flag is set on a division operator (/ mod rem) to indicate
-- that a zero divide check is required. The actual check is dealt
-- with by the backend (all the front end does is to set the flag).
-- Do_Length_Check (Flag4-Sem)
-- This flag is set in an N_Assignment_Statement, N_Op_And, N_Op_Or,
-- N_Op_Xor, or N_Type_Conversion node to indicate that a length check
-- is required. It is not determined who deals with this flag (???).
-- Do_Overflow_Check (Flag17-Sem)
-- This flag is set on an operator where an overflow check is required on
-- the operation. The actual check is dealt with by the backend (all the
-- front end does is to set the flag). The other cases where this flag is
-- used is on a Type_Conversion node and for attribute reference nodes.
-- For a type conversion, it means that the conversion is from one base
-- type to another, and the value may not fit in the target base type.
-- See also the description of Do_Range_Check for this case. The only
-- attribute references which use this flag are Pred and Succ, where it
-- means that the result should be checked for going outside the base
-- range. Note that this flag is not set for modular types. This flag is
-- also set on if and case expression nodes if we are operating in either
-- MINIMIZED or ELIMINATED overflow checking mode (to make sure that we
-- properly process overflow checking for dependent expressions).
-- Do_Range_Check (Flag9-Sem)
-- This flag is set on an expression which appears in a context where a
-- range check is required. The target type is clear from the context.
-- The contexts in which this flag can appear are the following:
-- Right side of an assignment. In this case the target type is
-- taken from the left side of the assignment, which is referenced
-- by the Name of the N_Assignment_Statement node.
-- Subscript expressions in an indexed component. In this case the
-- target type is determined from the type of the array, which is
-- referenced by the Prefix of the N_Indexed_Component node.
-- Argument expression for a parameter, appearing either directly in
-- the Parameter_Associations list of a call or as the Expression of an
-- N_Parameter_Association node that appears in this list. In either
-- case, the check is against the type of the formal. Note that the
-- flag is relevant only in IN and IN OUT parameters, and will be
-- ignored for OUT parameters, where no check is required in the call,
-- and if a check is required on the return, it is generated explicitly
-- with a type conversion.
-- Initialization expression for the initial value in an object
-- declaration. In this case the Do_Range_Check flag is set on
-- the initialization expression, and the check is against the
-- range of the type of the object being declared.
-- The expression of a type conversion. In this case the range check is
-- against the target type of the conversion. See also the use of
-- Do_Overflow_Check on a type conversion. The distinction is that the
-- overflow check protects against a value that is outside the range of
-- the target base type, whereas a range check checks that the
-- resulting value (which is a value of the base type of the target
-- type), satisfies the range constraint of the target type.
-- Note: when a range check is required in contexts other than those
-- listed above (e.g. in a return statement), an additional type
-- conversion node is introduced to represent the required check.
-- A special case arises for the arguments of the Pred/Succ attributes.
-- Here the range check needed is against First + 1 .. Last (Pred) or
-- First .. Last - 1 (Succ) of the corresponding base type. Essentially
-- these checks are what would be performed within the implicit body of
-- the functions that correspond to these attributes. In these cases,
-- the Do_Range check flag is set on the argument to the attribute
-- function, and the back end must special case the appropriate range
-- to check against.
-- Do_Storage_Check (Flag17-Sem)
-- This flag is set in an N_Allocator node to indicate that a storage
-- check is required for the allocation, or in an N_Subprogram_Body node
-- to indicate that a stack check is required in the subprogram prolog.
-- The N_Allocator case is handled by the routine that expands the call
-- to the runtime routine. The N_Subprogram_Body case is handled by the
-- backend, and all the semantics does is set the flag.
-- Do_Tag_Check (Flag13-Sem)
-- This flag is set on an N_Assignment_Statement, N_Function_Call,
-- N_Procedure_Call_Statement, N_Type_Conversion,
-- N_Simple_Return_Statement, or N_Extended_Return_Statement
-- node to indicate that the tag check can be suppressed. It is not
-- yet decided how this flag is used (TBD ???).
-- Elaborate_Present (Flag4-Sem)
-- This flag is set in the N_With_Clause node to indicate that pragma
-- Elaborate pragma appears for the with'ed units.
-- Elaborate_All_Desirable (Flag9-Sem)
-- This flag is set in the N_With_Clause mode to indicate that the static
-- elaboration processing has determined that an Elaborate_All pragma is
-- desirable for correct elaboration for this unit.
-- Elaborate_All_Present (Flag14-Sem)
-- This flag is set in the N_With_Clause node to indicate that a
-- pragma Elaborate_All pragma appears for the with'ed units.
-- Elaborate_Desirable (Flag11-Sem)
-- This flag is set in the N_With_Clause mode to indicate that the static
-- elaboration processing has determined that an Elaborate pragma is
-- desirable for correct elaboration for this unit.
-- Elaboration_Boolean (Node2-Sem)
-- This field is present in function and procedure specification nodes.
-- If set, it points to the entity for a Boolean flag that must be tested
-- for certain calls to check for access before elaboration. See body of
-- Sem_Elab for further details. This field is Empty if no elaboration
-- boolean is required.
-- Else_Actions (List3-Sem)
-- This field is present in if expression nodes. During code
-- expansion we use the Insert_Actions procedure (in Exp_Util) to insert
-- actions at an appropriate place in the tree to get elaborated at the
-- right time. For if expressions, we have to be sure that the actions
-- for the Else branch are only elaborated if the condition is False.
-- The Else_Actions field is used as a temporary parking place for
-- these actions. The final tree is always rewritten to eliminate the
-- need for this field, so in the tree passed to Gigi, this field is
-- always set to No_List.
-- Enclosing_Variant (Node2-Sem)
-- This field is present in the N_Variant node and identifies the Node_Id
-- corresponding to the immediately enclosing variant when the variant is
-- nested, and N_Empty otherwise. Set during semantic processing of the
-- variant part of a record type.
-- Entity (Node4-Sem)
-- Appears in all direct names (identifiers, character literals, and
-- operator symbols), as well as expanded names, and attributes that
-- denote entities, such as 'Class. Points to entity for corresponding
-- defining occurrence. Set after name resolution. For identifiers in a
-- WITH list, the corresponding defining occurrence is in a separately
-- compiled file, and Entity must be set by the library Load procedure.
--
-- Note: During name resolution, the value in Entity may be temporarily
-- incorrect (e.g. during overload resolution, Entity is initially set to
-- the first possible correct interpretation, and then later modified if
-- necessary to contain the correct value after resolution).
--
-- Note: This field overlaps Associated_Node, which is used during
-- generic processing (see Sem_Ch12 for details). Note also that in
-- generic templates, this means that the Entity field does not always
-- point to an Entity. Since the back end is expected to ignore generic
-- templates, this is harmless.
--
-- Note: This field also appears in N_Attribute_Definition_Clause nodes.
-- It is used only for stream attributes definition clauses. In this
-- case, it denotes a (possibly dummy) subprogram entity that is declared
-- conceptually at the point of the clause. Thus the visibility of the
-- attribute definition clause (in the sense of 8.3(23) as amended by
-- AI-195) can be checked by testing the visibility of that subprogram.
--
-- Note: Normally the Entity field of an identifier points to the entity
-- for the corresponding defining identifier, and hence the Chars field
-- of an identifier will match the Chars field of the entity. However,
-- there is no requirement that these match, and there are obscure cases
-- of generated code where they do not match.
-- Note: Ada 2012 aspect specifications require additional links between
-- identifiers and various attributes. These attributes can be of
-- arbitrary types, and the entity field of identifiers that denote
-- aspects must be used to store arbitrary expressions for later semantic
-- checks. See section on aspect specifications for details.
-- Entity_Or_Associated_Node (Node4-Sem)
-- A synonym for both Entity and Associated_Node. Used by convention in
-- the code when referencing this field in cases where it is not known
-- whether the field contains an Entity or an Associated_Node.
-- Etype (Node5-Sem)
-- Appears in all expression nodes, all direct names, and all entities.
-- Points to the entity for the related type. Set after type resolution.
-- Normally this is the actual subtype of the expression. However, in
-- certain contexts such as the right side of an assignment, subscripts,
-- arguments to calls, returned value in a function, initial value etc.
-- it is the desired target type. In the event that this is different
-- from the actual type, the Do_Range_Check flag will be set if a range
-- check is required. Note: if the Is_Overloaded flag is set, then Etype
-- points to an essentially arbitrary choice from the possible set of
-- types.
-- Exception_Junk (Flag8-Sem)
-- This flag is set in a various nodes appearing in a statement sequence
-- to indicate that the corresponding node is an artifact of the
-- generated code for exception handling, and should be ignored when
-- analyzing the control flow of the relevant sequence of statements
-- (e.g. to check that it does not end with a bad return statement).
-- Exception_Label (Node5-Sem)
-- Appears in N_Push_xxx_Label nodes. Points to the entity of the label
-- to be used for transforming the corresponding exception into a goto,
-- or contains Empty, if this exception is not to be transformed. Also
-- appears in N_Exception_Handler nodes, where, if set, it indicates
-- that there may be a local raise for the handler, so that expansion
-- to allow a goto is required (and this field contains the label for
-- this goto). See Exp_Ch11.Expand_Local_Exception_Handlers for details.
-- Expansion_Delayed (Flag11-Sem)
-- Set on aggregates and extension aggregates that need a top-down rather
-- than bottom-up expansion. Typically aggregate expansion happens bottom
-- up. For nested aggregates the expansion is delayed until the enclosing
-- aggregate itself is expanded, e.g. in the context of a declaration. To
-- delay it we set this flag. This is done to avoid creating a temporary
-- for each level of a nested aggregates, and also to prevent the
-- premature generation of constraint checks. This is also a requirement
-- if we want to generate the proper attachment to the internal
-- finalization lists (for record with controlled components). Top down
-- expansion of aggregates is also used for in-place array aggregate
-- assignment or initialization. When the full context is known, the
-- target of the assignment or initialization is used to generate the
-- left-hand side of individual assignment to each sub-component.
-- First_Inlined_Subprogram (Node3-Sem)
-- Present in the N_Compilation_Unit node for the main program. Points
-- to a chain of entities for subprograms that are to be inlined. The
-- Next_Inlined_Subprogram field of these entities is used as a link
-- pointer with Empty marking the end of the list. This field is Empty
-- if there are no inlined subprograms or inlining is not active.
-- First_Named_Actual (Node4-Sem)
-- Present in procedure call statement and function call nodes, and also
-- in Intrinsic nodes. Set during semantic analysis to point to the first
-- named parameter where parameters are ordered by declaration order (as
-- opposed to the actual order in the call which may be different due to
-- named associations). Note: this field points to the explicit actual
-- parameter itself, not the N_Parameter_Association node (its parent).
-- First_Real_Statement (Node2-Sem)
-- Present in N_Handled_Sequence_Of_Statements node. Normally set to
-- Empty. Used only when declarations are moved into the statement part
-- of a construct as a result of wrapping an AT END handler that is
-- required to cover the declarations. In this case, this field is used
-- to remember the location in the statements list of the first real
-- statement, i.e. the statement that used to be first in the statement
-- list before the declarations were prepended.
-- First_Subtype_Link (Node5-Sem)
-- Present in N_Freeze_Entity node for an anonymous base type that is
-- implicitly created by the declaration of a first subtype. It points
-- to the entity for the first subtype.
-- Float_Truncate (Flag11-Sem)
-- A flag present in type conversion nodes. This is used for float to
-- integer conversions where truncation is required rather than rounding.
-- Note that Gigi does not handle type conversions from real to integer
-- with rounding (see Expand_N_Type_Conversion).
-- Forwards_OK (Flag5-Sem)
-- A flag present in the N_Assignment_Statement node. It is used only
-- if the type being assigned is an array type, and is set if analysis
-- determines that it is definitely safe to do the copy forwards, i.e.
-- starting at the lowest addressed element. This is the case if either
-- the operands do not overlap, or they may overlap, but if they do,
-- then the left operand is at a lower address than the right operand.
--
-- Note: If neither of the flags Forwards_OK or Backwards_OK is set, it
-- means that the front end could not determine that either direction is
-- definitely safe, and a runtime check may be required if the backend
-- cannot figure it out. If both flags Forwards_OK and Backwards_OK are
-- set, it means that the front end can assure no overlap of operands.
-- From_Aspect_Specification (Flag13-Sem)
-- Processing of aspect specifications typically results in insertion in
-- the tree of corresponding pragma or attribute definition clause nodes.
-- These generated nodes have the From_Aspect_Specification flag set to
-- indicate that they came from aspect specifications originally.
-- From_At_End (Flag4-Sem)
-- This flag is set on an N_Raise_Statement node if it corresponds to
-- the reraise statement generated as the last statement of an AT END
-- handler when SJLJ exception handling is active. It is used to stop
-- a bogus violation of restriction (No_Exception_Propagation), bogus
-- because if the restriction is set, the reraise is not generated.
-- From_At_Mod (Flag4-Sem)
-- This flag is set on the attribute definition clause node that is
-- generated by a transformation of an at mod phrase in a record
-- representation clause. This is used to give slightly different (Ada 83
-- compatible) semantics to such a clause, namely it is used to specify a
-- minimum acceptable alignment for the base type and all subtypes. In
-- Ada 95 terms, the actual alignment of the base type and all subtypes
-- must be a multiple of the given value, and the representation clause
-- is considered to be type specific instead of subtype specific.
-- From_Default (Flag6-Sem)
-- This flag is set on the subprogram renaming declaration created in an
-- instance for a formal subprogram, when the formal is declared with a
-- box, and there is no explicit actual. If the flag is present, the
-- declaration is treated as an implicit reference to the formal in the
-- ali file.
-- Generic_Parent (Node5-Sem)
-- Generic_Parent is defined on declaration nodes that are instances. The
-- value of Generic_Parent is the generic entity from which the instance
-- is obtained. Generic_Parent is also defined for the renaming
-- declarations and object declarations created for the actuals in an
-- instantiation. The generic parent of such a declaration is the
-- corresponding generic association in the Instantiation node.
-- Generic_Parent_Type (Node4-Sem)
-- Generic_Parent_Type is defined on Subtype_Declaration nodes for the
-- actuals of formal private and derived types. Within the instance, the
-- operations on the actual are those inherited from the parent. For a
-- formal private type, the parent type is the generic type itself. The
-- Generic_Parent_Type is also used in an instance to determine whether a
-- private operation overrides an inherited one.
-- Handler_List_Entry (Node2-Sem)
-- This field is present in N_Object_Declaration nodes. It is set only
-- for the Handler_Record entry generated for an exception in zero cost
-- exception handling mode. It references the corresponding item in the
-- handler list, and is used to delete this entry if the corresponding
-- handler is deleted during optimization. For further details on why
-- this is required, see Exp_Ch11.Remove_Handler_Entries.
-- Has_Dereference_Action (Flag13-Sem)
-- This flag is present in N_Explicit_Dereference nodes. It is set to
-- indicate that the expansion has aready produced a call to primitive
-- Dereference of a System.Checked_Pools.Checked_Pool implementation.
-- Such dereference actions are produced for debugging purposes.
-- Has_Dynamic_Length_Check (Flag10-Sem)
-- This flag is present in all expression nodes. It is set to indicate
-- that one of the routines in unit Checks has generated a length check
-- action which has been inserted at the flagged node. This is used to
-- avoid the generation of duplicate checks.
-- Has_Dynamic_Range_Check (Flag12-Sem)
-- This flag is present in N_Subtype_Declaration nodes and on all
-- expression nodes. It is set to indicate that one of the routines in
-- unit Checks has generated a range check action which has been inserted
-- at the flagged node. This is used to avoid the generation of duplicate
-- checks. Why does this occur on N_Subtype_Declaration nodes, what does
-- it mean in that context???
-- Has_Local_Raise (Flag8-Sem)
-- Present in exception handler nodes. Set if the handler can be entered
-- via a local raise that gets transformed to a goto statement. This will
-- always be set if Local_Raise_Statements is non-empty, but can also be
-- set as a result of generation of N_Raise_xxx nodes, or flags set in
-- nodes requiring generation of back end checks.
-- Has_No_Elaboration_Code (Flag17-Sem)
-- A flag that appears in the N_Compilation_Unit node to indicate whether
-- or not elaboration code is present for this unit. It is initially set
-- true for subprogram specs and bodies and for all generic units and
-- false for non-generic package specs and bodies. Gigi may set the flag
-- in the non-generic package case if it determines that no elaboration
-- code is generated. Note that this flag is not related to the
-- Is_Preelaborated status, there can be preelaborated packages that
-- generate elaboration code, and non-preelaborated packages which do
-- not generate elaboration code.
-- Has_Pragma_Suppress_All (Flag14-Sem)
-- This flag is set in an N_Compilation_Unit node if the Suppress_All
-- pragma appears anywhere in the unit. This accommodates the rather
-- strange placement rules of other compilers (DEC permits it at the
-- end of a unit, and Rational allows it as a program unit pragma). We
-- allow it anywhere at all, and consider it equivalent to a pragma
-- Suppress (All_Checks) appearing at the start of the configuration
-- pragmas for the unit.
-- Has_Private_View (Flag11-Sem)
-- A flag present in generic nodes that have an entity, to indicate that
-- the node has a private type. Used to exchange private and full
-- declarations if the visibility at instantiation is different from the
-- visibility at generic definition.
-- Has_Relative_Deadline_Pragma (Flag9-Sem)
-- A flag present in N_Subprogram_Body and N_Task_Definition nodes to
-- flag the presence of a pragma Relative_Deadline.
-- Has_Self_Reference (Flag13-Sem)
-- Present in N_Aggregate and N_Extension_Aggregate. Indicates that one
-- of the expressions contains an access attribute reference to the
-- enclosing type. Such a self-reference can only appear in default-
-- initialized aggregate for a record type.
-- Has_SP_Choice (Flag15-Sem)
-- Present in all nodes containing a Discrete_Choices field (N_Variant,
-- N_Case_Expression_Alternative, N_Case_Statement_Alternative). Set to
-- True if the Discrete_Choices list has at least one occurrence of a
-- statically predicated subtype.
-- Has_Storage_Size_Pragma (Flag5-Sem)
-- A flag present in an N_Task_Definition node to flag the presence of a
-- Storage_Size pragma.
-- Has_Wide_Character (Flag11-Sem)
-- Present in string literals, set if any wide character (i.e. character
-- code outside the Character range but within Wide_Character range)
-- appears in the string. Used to implement pragma preference rules.
-- Has_Wide_Wide_Character (Flag13-Sem)
-- Present in string literals, set if any wide character (i.e. character
-- code outside the Wide_Character range) appears in the string. Used to
-- implement pragma preference rules.
-- Header_Size_Added (Flag11-Sem)
-- Present in N_Attribute_Reference nodes, set only for attribute
-- Max_Size_In_Storage_Elements. The flag indicates that the size of the
-- hidden list header used by the runtime finalization support has been
-- added to the size of the prefix. The flag also prevents the infinite
-- expansion of the same attribute in the said context.
-- Hidden_By_Use_Clause (Elist4-Sem)
-- An entity list present in use clauses that appear within
-- instantiations. For the resolution of local entities, entities
-- introduced by these use clauses have priority over global ones, and
-- outer entities must be explicitly hidden/restored on exit.
-- Implicit_With (Flag16-Sem)
-- This flag is set in the N_With_Clause node that is implicitly
-- generated for runtime units that are loaded by the expander, and also
-- for package System, if it is loaded implicitly by a use of the
-- 'Address or 'Tag attribute. ???There are other implicit with clauses
-- as well.
-- Implicit_With_From_Instantiation (Flag12-Sem)
-- Set in N_With_Clause nodes from generic instantiations.
-- Import_Interface_Present (Flag16-Sem)
-- This flag is set in an Interface or Import pragma if a matching
-- pragma of the other kind is also present. This is used to avoid
-- generating some unwanted error messages.
-- In_Assertion_Expression (Flag4-Sem)
-- This flag is present in N_Function_Call nodes. It is set if the
-- function is called from within an assertion expression. This is
-- used to avoid some bogus warnings about early elaboration.
-- Includes_Infinities (Flag11-Sem)
-- This flag is present in N_Range nodes. It is set for the range of
-- unconstrained float types defined in Standard, which include not only
-- the given range of values, but also legitimately can include infinite
-- values. This flag is false for any float type for which an explicit
-- range is given by the programmer, even if that range is identical to
-- the range for Float.
-- Inherited_Discriminant (Flag13-Sem)
-- This flag is present in N_Component_Association nodes. It indicates
-- that a given component association in an extension aggregate is the
-- value obtained from a constraint on an ancestor. Used to prevent
-- double expansion when the aggregate has expansion delayed.
-- Instance_Spec (Node5-Sem)
-- This field is present in generic instantiation nodes, and also in
-- formal package declaration nodes (formal package declarations are
-- treated in a manner very similar to package instantiations). It points
-- to the node for the spec of the instance, inserted as part of the
-- semantic processing for instantiations in Sem_Ch12.
-- Is_Accessibility_Actual (Flag13-Sem)
-- Present in N_Parameter_Association nodes. True if the parameter is
-- an extra actual that carries the accessibility level of the actual
-- for an access parameter, in a function that dispatches on result and
-- is called in a dispatching context. Used to prevent a formal/actual
-- mismatch when the call is rewritten as a dispatching call.
-- Is_Asynchronous_Call_Block (Flag7-Sem)
-- A flag set in a Block_Statement node to indicate that it is the
-- expansion of an asynchronous entry call. Such a block needs cleanup
-- handler to assure that the call is cancelled.
-- Is_Boolean_Aspect (Flag16-Sem)
-- Present in N_Aspect_Specification node. Set if the aspect is for a
-- boolean aspect (i.e. Aspect_Id is in Boolean_Aspect subtype).
-- Is_Checked (Flag11-Sem)
-- Present in N_Aspect_Specification and N_Pragma nodes. Set for an
-- assertion aspect or pragma, or check pragma for an assertion, that
-- is to be checked at run time. If either Is_Checked or Is_Ignored
-- is set (they cannot both be set), then this means that the status of
-- the pragma has been checked at the appropriate point and should not
-- be further modified (in some cases these flags are copied when a
-- pragma is rewritten).
-- Is_Component_Left_Opnd (Flag13-Sem)
-- Is_Component_Right_Opnd (Flag14-Sem)
-- Present in concatenation nodes, to indicate that the corresponding
-- operand is of the component type of the result. Used in resolving
-- concatenation nodes in instances.
-- Is_Delayed_Aspect (Flag14-Sem)
-- Present in N_Pragma and N_Attribute_Definition_Clause nodes which
-- come from aspect specifications, where the evaluation of the aspect
-- must be delayed to the freeze point. This flag is also set True in
-- the corresponding N_Aspect_Specification node.
-- Is_Controlling_Actual (Flag16-Sem)
-- This flag is set on in an expression that is a controlling argument in
-- a dispatching call. It is off in all other cases. See Sem_Disp for
-- details of its use.
-- Is_Disabled (Flag15-Sem)
-- A flag set in an N_Aspect_Specification or N_Pragma node if there was
-- a Check_Policy or Assertion_Policy (or in the case of a Debug_Pragma)
-- a Debug_Policy pragma that resulted in totally disabling the flagged
-- aspect or policy as a result of using the GNAT-defined policy DISABLE.
-- If this flag is set, the aspect or policy is not analyzed for semantic
-- correctness, so any expressions etc will not be marked as analyzed.
-- Is_Dynamic_Coextension (Flag18-Sem)
-- Present in allocator nodes, to indicate that this is an allocator
-- for an access discriminant of a dynamically allocated object. The
-- coextension must be deallocated and finalized at the same time as
-- the enclosing object.
-- Is_Entry_Barrier_Function (Flag8-Sem)
-- This flag is set in an N_Subprogram_Body node which is the expansion
-- of an entry barrier from a protected entry body. It is used for the
-- circuitry checking for incorrect use of Current_Task.
-- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
-- This flag is set in an N_Function_Call node to indicate that the extra
-- actuals to support a build-in-place style of call have been added to
-- the call.
-- Is_Finalization_Wrapper (Flag9-Sem);
-- This flag is present in N_Block_Statement nodes. It is set when the
-- block acts as a wrapper of a handled construct which has controlled
-- objects. The wrapper prevents interference between exception handlers
-- and At_End handlers.
-- Is_Ignored (Flag9-Sem)
-- A flag set in an N_Aspect_Specification or N_Pragma node if there was
-- a Check_Policy or Assertion_Policy (or in the case of a Debug_Pragma)
-- a Debug_Policy pragma that specified a policy of IGNORE, DISABLE, or
-- OFF, for the pragma/aspect. If there was a Policy pragma specifying
-- a Policy of ON or CHECK, then this flag is reset. If no Policy pragma
-- gives a policy for the aspect or pragma, then there are two cases. For
-- an assertion aspect or pragma (one of the assertion kinds allowed in
-- an Assertion_Policy pragma), then Is_Ignored is set if assertions are
-- ignored because of the absence of a -gnata switch. For any other
-- aspects or pragmas, the flag is off. If this flag is set, the
-- aspect/pragma is fully analyzed and checked for other syntactic
-- and semantic errors, but it does not have any semantic effect.
-- Is_In_Discriminant_Check (Flag11-Sem)
-- This flag is present in a selected component, and is used to indicate
-- that the reference occurs within a discriminant check. The
-- significance is that optimizations based on assuming that the
-- discriminant check has a correct value cannot be performed in this
-- case (or the discriminant check may be optimized away!)
-- Is_Machine_Number (Flag11-Sem)
-- This flag is set in an N_Real_Literal node to indicate that the value
-- is a machine number. This avoids some unnecessary cases of converting
-- real literals to machine numbers.
-- Is_Null_Loop (Flag16-Sem)
-- This flag is set in an N_Loop_Statement node if the corresponding loop
-- can be determined to be null at compile time. This is used to remove
-- the loop entirely at expansion time.
-- Is_Overloaded (Flag5-Sem)
-- A flag present in all expression nodes. Used temporarily during
-- overloading determination. The setting of this flag is not relevant
-- once overloading analysis is complete.
-- Is_Power_Of_2_For_Shift (Flag13-Sem)
-- A flag present only in N_Op_Expon nodes. It is set when the
-- exponentiation is of the form 2 ** N, where the type of N is an
-- unsigned integral subtype whose size does not exceed the size of
-- Standard_Integer (i.e. a type that can be safely converted to
-- Natural), and the exponentiation appears as the right operand of an
-- integer multiplication or an integer division where the dividend is
-- unsigned. It is also required that overflow checking is off for both
-- the exponentiation and the multiply/divide node. If this set of
-- conditions holds, and the flag is set, then the division or
-- multiplication can be (and is) converted to a shift.
-- Is_Prefixed_Call (Flag17-Sem)
-- This flag is set in a selected component within a generic unit, if
-- it resolves to a prefixed call to a primitive operation. The flag
-- is used to prevent accidental overloadings in an instance, when a
-- primitive operation and a private record component may be homographs.
-- Is_Protected_Subprogram_Body (Flag7-Sem)
-- A flag set in a Subprogram_Body block to indicate that it is the
-- implementation of a protected subprogram. Such a body needs cleanup
-- handler to make sure that the associated protected object is unlocked
-- when the subprogram completes.
-- Is_Static_Coextension (Flag14-Sem)
-- Present in N_Allocator nodes. Set if the allocator is a coextension
-- of an object allocated on the stack rather than the heap.
-- Is_Static_Expression (Flag6-Sem)
-- Indicates that an expression is a static expression (RM 4.9). See spec
-- of package Sem_Eval for full details on the use of this flag.
-- Is_Subprogram_Descriptor (Flag16-Sem)
-- Present in N_Object_Declaration, and set only for the object
-- declaration generated for a subprogram descriptor in fast exception
-- mode. See Exp_Ch11 for details of use.
-- Is_Task_Allocation_Block (Flag6-Sem)
-- A flag set in a Block_Statement node to indicate that it is the
-- expansion of a task allocator, or the allocator of an object
-- containing tasks. Such a block requires a cleanup handler to call
-- Expunge_Unactivated_Tasks to complete any tasks that have been
-- allocated but not activated when the allocator completes abnormally.
-- Is_Task_Master (Flag5-Sem)
-- A flag set in a Subprogram_Body, Block_Statement or Task_Body node to
-- indicate that the construct is a task master (i.e. has declared tasks
-- or declares an access to a task type).
-- Itype (Node1-Sem)
-- Used in N_Itype_Reference node to reference an itype for which it is
-- important to ensure that it is defined. See description of this node
-- for further details.
-- Kill_Range_Check (Flag11-Sem)
-- Used in an N_Unchecked_Type_Conversion node to indicate that the
-- result should not be subjected to range checks. This is used for the
-- implementation of Normalize_Scalars.
-- Label_Construct (Node2-Sem)
-- Used in an N_Implicit_Label_Declaration node. Refers to an N_Label,
-- N_Block_Statement or N_Loop_Statement node to which the label
-- declaration applies. This attribute is used both in the compiler and
-- in the implementation of ASIS queries. The field is left empty for the
-- special labels generated as part of expanding raise statements with a
-- local exception handler.
-- Library_Unit (Node4-Sem)
-- In a stub node, Library_Unit points to the compilation unit node of
-- the corresponding subunit.
--
-- In a with clause node, Library_Unit points to the spec of the with'ed
-- unit.
--
-- In a compilation unit node, the usage depends on the unit type:
--
-- For a library unit body, Library_Unit points to the compilation unit
-- node of the corresponding spec, unless it's a subprogram body with
-- Acts_As_Spec set, in which case it points to itself.
--
-- For a spec, Library_Unit points to the compilation unit node of the
-- corresponding body, if present. The body will be present if the spec
-- is or contains generics that we needed to instantiate. Similarly, the
-- body will be present if we needed it for inlining purposes. Thus, if
-- we have a spec/body pair, both of which are present, they point to
-- each other via Library_Unit.
--
-- For a subunit, Library_Unit points to the compilation unit node of
-- the parent body.
--
-- Note that this field is not used to hold the parent pointer for child
-- unit (which might in any case need to use it for some other purpose as
-- described above). Instead for a child unit, implicit with's are
-- generated for all parents.
-- Local_Raise_Statements (Elist1)
-- This field is present in exception handler nodes. It is set to
-- No_Elist in the normal case. If there is at least one raise statement
-- which can potentially be handled as a local raise, then this field
-- points to a list of raise nodes, which are calls to a routine to raise
-- an exception. These are raise nodes which can be optimized into gotos
-- if the handler turns out to meet the conditions which permit this
-- transformation. Note that this does NOT include instances of the
-- N_Raise_xxx_Error nodes since the transformation of these nodes is
-- handled by the back end (using the N_Push/N_Pop mechanism).
-- Loop_Actions (List2-Sem)
-- A list present in Component_Association nodes in array aggregates.
-- Used to collect actions that must be executed within the loop because
-- they may need to be evaluated anew each time through.
-- Limited_View_Installed (Flag18-Sem)
-- Present in With_Clauses and in package specifications. If set on
-- with_clause, it indicates that this clause has created the current
-- limited view of the designated package. On a package specification, it
-- indicates that the limited view has already been created because the
-- package is mentioned in a limited_with_clause in the closure of the
-- unit being compiled.
-- Local_Raise_Not_OK (Flag7-Sem)
-- Present in N_Exception_Handler nodes. Set if the handler contains
-- a construct (reraise statement, or call to subprogram in package
-- GNAT.Current_Exception) that makes the handler unsuitable as a target
-- for a local raise (one that could otherwise be converted to a goto).
-- Must_Be_Byte_Aligned (Flag14-Sem)
-- This flag is present in N_Attribute_Reference nodes. It can be set
-- only for the Address and Unrestricted_Access attributes. If set it
-- means that the object for which the address/access is given must be on
-- a byte (more accurately a storage unit) boundary. If necessary, a copy
-- of the object is to be made before taking the address (this copy is in
-- the current scope on the stack frame). This is used for certain cases
-- of code generated by the expander that passes parameters by address.
--
-- The reason the copy is not made by the front end is that the back end
-- has more information about type layout and may be able to (but is not
-- guaranteed to) prevent making unnecessary copies.
-- Must_Not_Freeze (Flag8-Sem)
-- A flag present in all expression nodes. Normally expressions cause
-- freezing as described in the RM. If this flag is set, then this is
-- inhibited. This is used by the analyzer and expander to label nodes
-- that are created by semantic analysis or expansion and which must not
-- cause freezing even though they normally would. This flag is also
-- present in an N_Subtype_Indication node, since we also use these in
-- calls to Freeze_Expression.
-- Next_Entity (Node2-Sem)
-- Present in defining identifiers, defining character literals and
-- defining operator symbols (i.e. in all entities). The entities of a
-- scope are chained, and this field is used as the forward pointer for
-- this list. See Einfo for further details.
-- Next_Exit_Statement (Node3-Sem)
-- Present in N_Exit_Statement nodes. The exit statements for a loop are
-- chained (in reverse order of appearance) from the First_Exit_Statement
-- field of the E_Loop entity for the loop. Next_Exit_Statement points to
-- the next entry on this chain (Empty = end of list).
-- Next_Implicit_With (Node3-Sem)
-- Present in N_With_Clause. Part of a chain of with_clauses generated
-- in rtsfind to indicate implicit dependencies on predefined units. Used
-- to prevent multiple with_clauses for the same unit in a given context.
-- A postorder traversal of the tree whose nodes are units and whose
-- links are with_clauses defines the order in which CodePeer must
-- examine a compiled unit and its full context. This ordering ensures
-- that any subprogram call is examined after the subprogram declaration
-- has been seen.
-- Next_Named_Actual (Node4-Sem)
-- Present in parameter association nodes. Set during semantic analysis
-- to point to the next named parameter, where parameters are ordered by
-- declaration order (as opposed to the actual order in the call, which
-- may be different due to named associations). Not that this field
-- points to the explicit actual parameter itself, not to the
-- N_Parameter_Association node (its parent).
-- Next_Pragma (Node1-Sem)
-- Present in N_Pragma nodes. Used to create a linked list of pragma
-- nodes. Currently used for two purposes:
--
-- Create a list of linked Check_Policy pragmas. The head of this list
-- is stored in Opt.Check_Policy_List (which has further details).
--
-- Used by processing for Pre/Postcondition pragmas to store a list of
-- pragmas associated with the spec of a subprogram (see Sem_Prag for
-- details).
--
-- Used by processing for pragma SPARK_Mode to store multiple pragmas
-- the apply to the same construct. These are visible/private mode for
-- a package spec and declarative/statement mode for package body.
-- Next_Rep_Item (Node5-Sem)
-- Present in pragma nodes, attribute definition nodes, enumeration rep
-- clauses, record rep clauses, aspect specification nodes. Used to link
-- representation items that apply to an entity. See full description of
-- First_Rep_Item field in Einfo for further details.
-- Next_Use_Clause (Node3-Sem)
-- While use clauses are active during semantic processing, they are
-- chained from the scope stack entry, using Next_Use_Clause as a link
-- pointer, with Empty marking the end of the list. The head pointer is
-- in the scope stack entry (First_Use_Clause). At the end of semantic
-- processing (i.e. when Gigi sees the tree, the contents of this field
-- is undefined and should not be read).
-- No_Ctrl_Actions (Flag7-Sem)
-- Present in N_Assignment_Statement to indicate that no Finalize nor
-- Adjust should take place on this assignment even though the RHS is
-- controlled. Also indicates that the primitive _assign should not be
-- used for a tagged assignment. This is used in init procs and aggregate
-- expansions where the generated assignments are initializations, not
-- real assignments.
-- No_Elaboration_Check (Flag14-Sem)
-- Present in N_Function_Call and N_Procedure_Call_Statement. Indicates
-- that no elaboration check is needed on the call, because it appears in
-- the context of a local Suppress pragma. This is used on calls within
-- task bodies, where the actual elaboration checks are applied after
-- analysis, when the local scope stack is not present.
-- No_Entities_Ref_In_Spec (Flag8-Sem)
-- Present in N_With_Clause nodes. Set if the with clause is on the
-- package or subprogram spec where the main unit is the corresponding
-- body, and no entities of the with'ed unit are referenced by the spec
-- (an entity may still be referenced in the body, so this flag is used
-- to generate the proper message (see Sem_Util.Check_Unused_Withs for
-- full details)
-- No_Initialization (Flag13-Sem)
-- Present in N_Object_Declaration and N_Allocator to indicate that the
-- object must not be initialized (by Initialize or call to an init
-- proc). This is needed for controlled aggregates. When the Object
-- declaration has an expression, this flag means that this expression
-- should not be taken into account (needed for in place initialization
-- with aggregates, and for object with an address clause, which are
-- initialized with an assignment at freeze time).
-- No_Minimize_Eliminate (Flag17-Sem)
-- This flag is present in membership operator nodes (N_In/N_Not_In).
-- It is used to indicate that processing for extended overflow checking
-- modes is not required (this is used to prevent infinite recursion).
-- No_Truncation (Flag17-Sem)
-- Present in N_Unchecked_Type_Conversion node. This flag has an effect
-- only if the RM_Size of the source is greater than the RM_Size of the
-- target for scalar operands. Normally in such a case we truncate some
-- higher order bits of the source, and then sign/zero extend the result
-- to form the output value. But if this flag is set, then we do not do
-- any truncation, so for example, if an 8 bit input is converted to 5
-- bit result which is in fact stored in 8 bits, then the high order
-- three bits of the target result will be copied from the source. This
-- is used for properly setting out of range values for use by pragmas
-- Initialize_Scalars and Normalize_Scalars.
-- Original_Discriminant (Node2-Sem)
-- Present in identifiers. Used in references to discriminants that
-- appear in generic units. Because the names of the discriminants may be
-- different in an instance, we use this field to recover the position of
-- the discriminant in the original type, and replace it with the
-- discriminant at the same position in the instantiated type.
-- Original_Entity (Node2-Sem)
-- Present in numeric literals. Used to denote the named number that has
-- been constant-folded into the given literal. If literal is from
-- source, or the result of some other constant-folding operation, then
-- Original_Entity is empty. This field is needed to handle properly
-- named numbers in generic units, where the Associated_Node field
-- interferes with the Entity field, making it impossible to preserve the
-- original entity at the point of instantiation (ASIS problem).
-- Others_Discrete_Choices (List1-Sem)
-- When a case statement or variant is analyzed, the semantic checks
-- determine the actual list of choices that correspond to an others
-- choice. This list is materialized for later use by the expander and
-- the Others_Discrete_Choices field of an N_Others_Choice node points to
-- this materialized list of choices, which is in standard format for a
-- list of discrete choices, except that of course it cannot contain an
-- N_Others_Choice entry.
-- Parameter_List_Truncated (Flag17-Sem)
-- Present in N_Function_Call and N_Procedure_Call_Statement nodes. Set
-- (for OpenVMS ports of GNAT only) if the parameter list is truncated as
-- a result of a First_Optional_Parameter specification in an
-- Import_Function, Import_Procedure, or Import_Valued_Procedure pragma.
-- The truncation is done by the expander by removing trailing parameters
-- from the argument list, in accordance with the set of rules allowing
-- such parameter removal. In particular, parameters can be removed
-- working from the end of the parameter list backwards up to and
-- including the entry designated by First_Optional_Parameter in the
-- Import pragma. Parameters can be removed if they are implicit and the
-- default value is a known-at-compile-time value, including the use of
-- the Null_Parameter attribute, or if explicit parameter values are
-- present that match the corresponding defaults.
-- Parent_Spec (Node4-Sem)
-- For a library unit that is a child unit spec (package or subprogram
-- declaration, generic declaration or instantiation, or library level
-- rename, this field points to the compilation unit node for the parent
-- package specification. This field is Empty for library bodies (the
-- parent spec in this case can be found from the corresponding spec).
-- Premature_Use (Node5-Sem)
-- Present in N_Incomplete_Type_Declaration node. Used for improved
-- error diagnostics: if there is a premature usage of an incomplete
-- type, a subsequently generated error message indicates the position
-- of its full declaration.
-- Present_Expr (Uint3-Sem)
-- Present in an N_Variant node. This has a meaningful value only after
-- Gigi has back annotated the tree with representation information. At
-- this point, it contains a reference to a gcc expression that depends
-- on the values of one or more discriminants. Give a set of discriminant
-- values, this expression evaluates to False (zero) if variant is not
-- present, and True (non-zero) if it is present. See unit Repinfo for
-- further details on gigi back annotation. This field is used during
-- ASIS processing (data decomposition annex) to determine if a field is
-- present or not.
-- Print_In_Hex (Flag13-Sem)
-- Set on an N_Integer_Literal node to indicate that the value should be
-- printed in hexadecimal in the sprint listing. Has no effect on
-- legality or semantics of program, only on the displayed output. This
-- is used to clarify output from the packed array cases.
-- Procedure_To_Call (Node2-Sem)
-- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
-- and N_Extended_Return_Statement nodes. References the entity for the
-- declaration of the procedure to be called to accomplish the required
-- operation (i.e. for the Allocate procedure in the case of N_Allocator
-- and N_Simple_Return_Statement and N_Extended_Return_Statement (for
-- allocating the return value), and for the Deallocate procedure in the
-- case of N_Free_Statement.
-- Raises_Constraint_Error (Flag7-Sem)
-- Set on an expression whose evaluation will definitely fail constraint
-- error check. In the case of static expressions, this flag must be set
-- accurately (and if it is set, the expression is typically illegal
-- unless it appears as a non-elaborated branch of a short-circuit form).
-- For a non-static expression, this flag may be set whenever an
-- expression (e.g. an aggregate) is known to raise constraint error. If
-- set, the expression definitely will raise CE if elaborated at runtime.
-- If not set, the expression may or may not raise CE. In other words, on
-- static expressions, the flag is set accurately, on non-static
-- expressions it is set conservatively.
-- Redundant_Use (Flag13-Sem)
-- Present in nodes that can appear as an operand in a use clause or use
-- type clause (identifiers, expanded names, attribute references). Set
-- to indicate that a use is redundant (and therefore need not be undone
-- on scope exit).
-- Renaming_Exception (Node2-Sem)
-- Present in N_Exception_Declaration node. Used to point back to the
-- exception renaming for an exception declared within a subprogram.
-- What happens is that an exception declared in a subprogram is moved
-- to the library level with a unique name, and the original exception
-- becomes a renaming. This link from the library level exception to the
-- renaming declaration allows registering of the proper exception name.
-- Return_Statement_Entity (Node5-Sem)
-- Present in N_Simple_Return_Statement and N_Extended_Return_Statement.
-- Points to an E_Return_Statement representing the return statement.
-- Return_Object_Declarations (List3)
-- Present in N_Extended_Return_Statement. Points to a list initially
-- containing a single N_Object_Declaration representing the return
-- object. We use a list (instead of just a pointer to the object decl)
-- because Analyze wants to insert extra actions on this list.
-- Rounded_Result (Flag18-Sem)
-- Present in N_Type_Conversion, N_Op_Divide and N_Op_Multiply nodes.
-- Used in the fixed-point cases to indicate that the result must be
-- rounded as a result of the use of the 'Round attribute. Also used for
-- integer N_Op_Divide nodes to indicate that the result should be
-- rounded to the nearest integer (breaking ties away from zero), rather
-- than truncated towards zero as usual. These rounded integer operations
-- are the result of expansion of rounded fixed-point divide, conversion
-- and multiplication operations.
-- SCIL_Entity (Node4-Sem)
-- Present in SCIL nodes. Used to reference the tagged type associated
-- with the SCIL node.
-- SCIL_Controlling_Tag (Node5-Sem)
-- Present in N_SCIL_Dispatching_Call nodes. Used to reference the
-- controlling tag of a dispatching call.
-- SCIL_Tag_Value (Node5-Sem)
-- Present in N_SCIL_Membership_Test nodes. Used to reference the tag
-- value that is being tested.
-- SCIL_Target_Prim (Node2-Sem)
-- Present in N_SCIL_Dispatching_Call nodes. Used to reference the tagged
-- type primitive associated with the SCIL node.
-- Scope (Node3-Sem)
-- Present in defining identifiers, defining character literals and
-- defining operator symbols (i.e. in all entities). The entities of a
-- scope all use this field to reference the corresponding scope entity.
-- See Einfo for further details.
-- Shift_Count_OK (Flag4-Sem)
-- A flag present in shift nodes to indicate that the shift count is
-- known to be in range, i.e. is in the range from zero to word length
-- minus one. If this flag is not set, then the shift count may be
-- outside this range, i.e. larger than the word length, and the code
-- must ensure that such shift counts give the appropriate result.
-- Source_Type (Node1-Sem)
-- Used in an N_Validate_Unchecked_Conversion node to point to the
-- source type entity for the unchecked conversion instantiation
-- which gigi must do size validation for.
-- Split_PPC (Flag17)
-- When a Pre or Post aspect specification is processed, it is broken
-- into AND THEN sections. The left most section has Split_PPC set to
-- False, indicating that it is the original specification (e.g. for
-- posting errors). For other sections, Split_PPC is set to True.
-- This flag is set in both the N_Aspect_Specification node itself,
-- and in the pragma which is generated from this node.
-- Storage_Pool (Node1-Sem)
-- Present in N_Allocator, N_Free_Statement, N_Simple_Return_Statement,
-- and N_Extended_Return_Statement nodes. References the entity for the
-- storage pool to be used for the allocate or free call or for the
-- allocation of the returned value from function. Empty indicates that
-- the global default pool is to be used. Note that in the case
-- of a return statement, this field is set only if the function returns
-- value of a type whose size is not known at compile time on the
-- secondary stack.
-- Suppress_Assignment_Checks (Flag18-Sem)
-- Used in generated N_Assignment_Statement nodes to suppress predicate
-- and range checks in cases where the generated code knows that the
-- value being assigned is in range and satisfies any predicate. Also
-- can be set in N_Object_Declaration nodes, to similarly suppress any
-- checks on the initializing value.
-- Suppress_Loop_Warnings (Flag17-Sem)
-- Used in N_Loop_Statement node to indicate that warnings within the
-- body of the loop should be suppressed. This is set when the range
-- of a FOR loop is known to be null, or is probably null (loop would
-- only execute if invalid values are present).
-- Target_Type (Node2-Sem)
-- Used in an N_Validate_Unchecked_Conversion node to point to the target
-- type entity for the unchecked conversion instantiation which gigi must
-- do size validation for.
-- Then_Actions (List3-Sem)
-- This field is present in if expression nodes. During code expansion
-- we use the Insert_Actions procedure (in Exp_Util) to insert actions
-- at an appropriate place in the tree to get elaborated at the right
-- time. For if expressions, we have to be sure that the actions for
-- for the Then branch are only elaborated if the condition is True.
-- The Then_Actions field is used as a temporary parking place for
-- these actions. The final tree is always rewritten to eliminate the
-- need for this field, so in the tree passed to Gigi, this field is
-- always set to No_List.
-- Treat_Fixed_As_Integer (Flag14-Sem)
-- This flag appears in operator nodes for divide, multiply, mod and rem
-- on fixed-point operands. It indicates that the operands are to be
-- treated as integer values, ignoring small values. This flag is only
-- set as a result of expansion of fixed-point operations. Typically a
-- fixed-point multiplication in the source generates subsidiary
-- multiplication and division operations that work with the underlying
-- integer values and have this flag set. Note that this flag is not
-- needed on other arithmetic operations (add, neg, subtract etc.) since
-- in these cases it is always the case that fixed is treated as integer.
-- The Etype field MUST be set if this flag is set. The analyzer knows to
-- leave such nodes alone, and whoever makes them must set the correct
-- Etype value.
-- TSS_Elist (Elist3-Sem)
-- Present in N_Freeze_Entity nodes. Holds an element list containing
-- entries for each TSS (type support subprogram) associated with the
-- frozen type. The elements of the list are the entities for the
-- subprograms (see package Exp_TSS for further details). Set to No_Elist
-- if there are no type support subprograms for the type or if the freeze
-- node is not for a type.
-- Unreferenced_In_Spec (Flag7-Sem)
-- Present in N_With_Clause nodes. Set if the with clause is on the
-- package or subprogram spec where the main unit is the corresponding
-- body, and is not referenced by the spec (it may still be referenced by
-- the body, so this flag is used to generate the proper message (see
-- Sem_Util.Check_Unused_Withs for details)
-- Used_Operations (Elist5-Sem)
-- Present in N_Use_Type_Clause nodes. Holds the list of operations that
-- are made potentially use-visible by the clause. Simplifies processing
-- on exit from the scope of the use_type_clause, in particular in the
-- case of Use_All_Type, when those operations several scopes.
-- Was_Originally_Stub (Flag13-Sem)
-- This flag is set in the node for a proper body that replaces stub.
-- During the analysis procedure, stubs in some situations get rewritten
-- by the corresponding bodies, and we set this flag to remember that
-- this happened. Note that it is not good enough to rely on the use of
-- Original_Node here because of the case of nested instantiations where
-- the substituted node can be copied.
-- Withed_Body (Node1-Sem)
-- Present in N_With_Clause nodes. Set if the unit in whose context
-- the with_clause appears instantiates a generic contained in the
-- library unit of the with_clause and as a result loads its body.
-- Used for a more precise unit traversal for CodePeer.
--------------------------------------------------
-- Note on Use of End_Label and End_Span Fields --
--------------------------------------------------
-- Several constructs have end lines:
-- Loop Statement end loop [loop_IDENTIFIER];
-- Package Specification end [[PARENT_UNIT_NAME .] IDENTIFIER]
-- Task Definition end [task_IDENTIFIER]
-- Protected Definition end [protected_IDENTIFIER]
-- Protected Body end [protected_IDENTIFIER]
-- Block Statement end [block_IDENTIFIER];
-- Subprogram Body end [DESIGNATOR];
-- Package Body end [[PARENT_UNIT_NAME .] IDENTIFIER];
-- Task Body end [task_IDENTIFIER];
-- Accept Statement end [entry_IDENTIFIER]];
-- Entry Body end [entry_IDENTIFIER];
-- If Statement end if;
-- Case Statement end case;
-- Record Definition end record;
-- Enumeration Definition );
-- The End_Label and End_Span fields are used to mark the locations of
-- these lines, and also keep track of the label in the case where a label
-- is present.
-- For the first group above, the End_Label field of the corresponding node
-- is used to point to the label identifier. In the case where there is no
-- label in the source, the parser supplies a dummy identifier (with
-- Comes_From_Source set to False), and the Sloc of this dummy identifier
-- marks the location of the token following the END token.
-- For the second group, the use of End_Label is similar, but the End_Label
-- is found in the N_Handled_Sequence_Of_Statements node. This is done
-- simply because in some cases there is no room in the parent node.
-- For the third group, there is never any label, and instead of using
-- End_Label, we use the End_Span field which gives the location of the
-- token following END, relative to the starting Sloc of the construct,
-- i.e. add Sloc (Node) + End_Span (Node) to get the Sloc of the IF or CASE
-- following the End_Label.
-- The record definition case is handled specially, we treat it as though
-- it required an optional label which is never present, and so the parser
-- always builds a dummy identifier with Comes From Source set False. The
-- reason we do this, rather than using End_Span in this case, is that we
-- want to generate a cross-ref entry for the end of a record, since it
-- represents a scope for name declaration purposes.
-- The enumeration definition case is handled in an exactly similar manner,
-- building a dummy identifier to get a cross-reference.
-- Note: the reason we store the difference as a Uint, instead of storing
-- the Source_Ptr value directly, is that Source_Ptr values cannot be
-- distinguished from other types of values, and we count on all general
-- use fields being self describing. To make things easier for clients,
-- note that we provide function End_Location, and procedure
-- Set_End_Location to allow access to the logical value (which is the
-- Source_Ptr value for the end token).
---------------------
-- Syntactic Nodes --
---------------------
---------------------
-- 2.3 Identifier --
---------------------
-- IDENTIFIER ::= IDENTIFIER_LETTER {[UNDERLINE] LETTER_OR_DIGIT}
-- LETTER_OR_DIGIT ::= IDENTIFIER_LETTER | DIGIT
-- An IDENTIFIER shall not be a reserved word
-- In the Ada grammar identifiers are the bottom level tokens which have
-- very few semantics. Actual program identifiers are direct names. If
-- we were being 100% honest with the grammar, then we would have a node
-- called N_Direct_Name which would point to an identifier. However,
-- that's too many extra nodes, so we just use the N_Identifier node
-- directly as a direct name, and it contains the expression fields and
-- Entity field that correspond to its use as a direct name. In those
-- few cases where identifiers appear in contexts where they are not
-- direct names (pragmas, pragma argument associations, attribute
-- references and attribute definition clauses), the Chars field of the
-- node contains the Name_Id for the identifier name.
-- Note: in GNAT, a reserved word can be treated as an identifier in two
-- cases. First, an incorrect use of a reserved word as an identifier is
-- diagnosed and then treated as a normal identifier. Second, an
-- attribute designator of the form of a reserved word (access, delta,
-- digits, range) is treated as an identifier.
-- Note: The set of letters that is permitted in an identifier depends
-- on the character set in use. See package Csets for full details.
-- N_Identifier
-- Sloc points to identifier
-- Chars (Name1) contains the Name_Id for the identifier
-- Entity (Node4-Sem)
-- Associated_Node (Node4-Sem)
-- Original_Discriminant (Node2-Sem)
-- Redundant_Use (Flag13-Sem)
-- Atomic_Sync_Required (Flag14-Sem)
-- Has_Private_View (Flag11-Sem) (set in generic units)
-- plus fields for expression
--------------------------
-- 2.4 Numeric Literal --
--------------------------
-- NUMERIC_LITERAL ::= DECIMAL_LITERAL | BASED_LITERAL
----------------------------
-- 2.4.1 Decimal Literal --
----------------------------
-- DECIMAL_LITERAL ::= NUMERAL [.NUMERAL] [EXPONENT]
-- NUMERAL ::= DIGIT {[UNDERLINE] DIGIT}
-- EXPONENT ::= E [+] NUMERAL | E - NUMERAL
-- Decimal literals appear in the tree as either integer literal nodes
-- or real literal nodes, depending on whether a period is present.
-- Note: literal nodes appear as a result of direct use of literals
-- in the source program, and also as the result of evaluating
-- expressions at compile time. In the latter case, it is possible
-- to construct real literals that have no syntactic representation
-- using the standard literal format. Such literals are listed by
-- Sprint using the notation [numerator / denominator].
-- Note: the value of an integer literal node created by the front end
-- is never outside the range of values of the base type. However, it
-- can be the case that the created value is outside the range of the
-- particular subtype. This happens in the case of integer overflows
-- with checks suppressed.
-- N_Integer_Literal
-- Sloc points to literal
-- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
-- has been constant-folded into its literal value.
-- Intval (Uint3) contains integer value of literal
-- plus fields for expression
-- Print_In_Hex (Flag13-Sem)
-- N_Real_Literal
-- Sloc points to literal
-- Original_Entity (Node2-Sem) If not Empty, holds Named_Number that
-- has been constant-folded into its literal value.
-- Realval (Ureal3) contains real value of literal
-- Corresponding_Integer_Value (Uint4-Sem)
-- Is_Machine_Number (Flag11-Sem)
-- plus fields for expression
--------------------------
-- 2.4.2 Based Literal --
--------------------------
-- BASED_LITERAL ::=
-- BASE # BASED_NUMERAL [.BASED_NUMERAL] # [EXPONENT]
-- BASE ::= NUMERAL
-- BASED_NUMERAL ::=
-- EXTENDED_DIGIT {[UNDERLINE] EXTENDED_DIGIT}
-- EXTENDED_DIGIT ::= DIGIT | A | B | C | D | E | F
-- Based literals appear in the tree as either integer literal nodes
-- or real literal nodes, depending on whether a period is present.
----------------------------
-- 2.5 Character Literal --
----------------------------
-- CHARACTER_LITERAL ::= ' GRAPHIC_CHARACTER '
-- N_Character_Literal
-- Sloc points to literal
-- Chars (Name1) contains the Name_Id for the identifier
-- Char_Literal_Value (Uint2) contains the literal value
-- Entity (Node4-Sem)
-- Associated_Node (Node4-Sem)
-- Has_Private_View (Flag11-Sem) set in generic units.
-- plus fields for expression
-- Note: the Entity field will be missing (set to Empty) for character
-- literals whose type is Standard.Wide_Character or Standard.Character
-- or a type derived from one of these two. In this case the character
-- literal stands for its own coding. The reason we take this irregular
-- short cut is to avoid the need to build lots of junk defining
-- character literal nodes.
-------------------------
-- 2.6 String Literal --
-------------------------
-- STRING LITERAL ::= "{STRING_ELEMENT}"
-- A STRING_ELEMENT is either a pair of quotation marks ("), or a
-- single GRAPHIC_CHARACTER other than a quotation mark.
--
-- Is_Folded_In_Parser is True if the parser created this literal by
-- folding a sequence of "&" operators. For example, if the source code
-- says "aaa" & "bbb" & "ccc", and this produces "aaabbbccc", the flag
-- is set. This flag is needed because the parser doesn't know about
-- visibility, so the folded result might be wrong, and semantic
-- analysis needs to check for that.
-- N_String_Literal
-- Sloc points to literal
-- Strval (Str3) contains Id of string value
-- Has_Wide_Character (Flag11-Sem)
-- Has_Wide_Wide_Character (Flag13-Sem)
-- Is_Folded_In_Parser (Flag4)
-- plus fields for expression
------------------
-- 2.7 Comment --
------------------
-- A COMMENT starts with two adjacent hyphens and extends up to the
-- end of the line. A COMMENT may appear on any line of a program.
-- Comments are skipped by the scanner and do not appear in the tree.
-- It is possible to reconstruct the position of comments with respect
-- to the elements of the tree by using the source position (Sloc)
-- pointers that appear in every tree node.
-----------------
-- 2.8 Pragma --
-----------------
-- PRAGMA ::= pragma IDENTIFIER
-- [(PRAGMA_ARGUMENT_ASSOCIATION {, PRAGMA_ARGUMENT_ASSOCIATION})];
-- Note that a pragma may appear in the tree anywhere a declaration
-- or a statement may appear, as well as in some other situations
-- which are explicitly documented.
-- N_Pragma
-- Sloc points to PRAGMA
-- Next_Pragma (Node1-Sem)
-- Pragma_Argument_Associations (List2) (set to No_List if none)
-- Corresponding_Aspect (Node3-Sem) (set to Empty if not present)
-- Pragma_Identifier (Node4)
-- Next_Rep_Item (Node5-Sem)
-- Class_Present (Flag6) set if from Aspect with 'Class
-- From_Aspect_Specification (Flag13-Sem)
-- Is_Delayed_Aspect (Flag14-Sem)
-- Is_Disabled (Flag15-Sem)
-- Is_Ignored (Flag9-Sem)
-- Is_Checked (Flag11-Sem)
-- Import_Interface_Present (Flag16-Sem)
-- Split_PPC (Flag17) set if corresponding aspect had Split_PPC set
-- Note: we should have a section on what pragmas are passed on to
-- the back end to be processed. This section should note that pragma
-- Psect_Object is always converted to Common_Object, but there are
-- undoubtedly many other similar notes required ???
-- Note: a utility function Pragma_Name may be applied to pragma nodes
-- to conveniently obtain the Chars field of the Pragma_Identifier.
-- Note: if From_Aspect_Specification is set, then Sloc points to the
-- aspect name, as does the Pragma_Identifier. In this case if the
-- pragma has a local name argument (such as pragma Inline), it is
-- resolved to point to the specific entity affected by the pragma.
--------------------------------------
-- 2.8 Pragma Argument Association --
--------------------------------------
-- PRAGMA_ARGUMENT_ASSOCIATION ::=
-- [pragma_argument_IDENTIFIER =>] NAME
-- | [pragma_argument_IDENTIFIER =>] EXPRESSION
-- In Ada 2012, there are two more possibilities:
-- PRAGMA_ARGUMENT_ASSOCIATION ::=
-- [pragma_argument_ASPECT_MARK =>] NAME
-- | [pragma_argument_ASPECT_MARK =>] EXPRESSION
-- where the interesting allowed cases (which do not fit the syntax of
-- the first alternative above) are
-- ASPECT_MARK => Pre'Class |
-- Post'Class |
-- Type_Invariant'Class |
-- Invariant'Class
-- We allow this special usage in all Ada modes, but it would be a
-- pain to allow these aspects to pervade the pragma syntax, and the
-- representation of pragma nodes internally. So what we do is to
-- replace these ASPECT_MARK forms with identifiers whose name is one
-- of the special internal names _Pre, _Post or _Type_Invariant.
-- We do a similar replacement of these Aspect_Mark forms in the
-- Expression of a pragma argument association for the cases of
-- the first arguments of any Check pragmas and Check_Policy pragmas
-- N_Pragma_Argument_Association
-- Sloc points to first token in association
-- Chars (Name1) (set to No_Name if no pragma argument identifier)
-- Expression (Node3)
------------------------
-- 2.9 Reserved Word --
------------------------
-- Reserved words are parsed by the scanner, and returned as the
-- corresponding token types (e.g. PACKAGE is returned as Tok_Package)
----------------------------
-- 3.1 Basic Declaration --
----------------------------
-- BASIC_DECLARATION ::=
-- TYPE_DECLARATION | SUBTYPE_DECLARATION
-- | OBJECT_DECLARATION | NUMBER_DECLARATION
-- | SUBPROGRAM_DECLARATION | ABSTRACT_SUBPROGRAM_DECLARATION
-- | PACKAGE_DECLARATION | RENAMING_DECLARATION
-- | EXCEPTION_DECLARATION | GENERIC_DECLARATION
-- | GENERIC_INSTANTIATION
-- Basic declaration also includes IMPLICIT_LABEL_DECLARATION
-- see further description in section on semantic nodes.
-- Also, in the tree that is constructed, a pragma may appear
-- anywhere that a declaration may appear.
------------------------------
-- 3.1 Defining Identifier --
------------------------------
-- DEFINING_IDENTIFIER ::= IDENTIFIER
-- A defining identifier is an entity, which has additional fields
-- depending on the setting of the Ekind field. These additional
-- fields are defined (and access subprograms declared) in package
-- Einfo.
-- Note: N_Defining_Identifier is an extended node whose fields are
-- deliberate layed out to match the layout of fields in an ordinary
-- N_Identifier node allowing for easy alteration of an identifier
-- node into a defining identifier node. For details, see procedure
-- Sinfo.CN.Change_Identifier_To_Defining_Identifier.
-- N_Defining_Identifier
-- Sloc points to identifier
-- Chars (Name1) contains the Name_Id for the identifier
-- Next_Entity (Node2-Sem)
-- Scope (Node3-Sem)
-- Etype (Node5-Sem)
-----------------------------
-- 3.2.1 Type Declaration --
-----------------------------
-- TYPE_DECLARATION ::=
-- FULL_TYPE_DECLARATION
-- | INCOMPLETE_TYPE_DECLARATION
-- | PRIVATE_TYPE_DECLARATION
-- | PRIVATE_EXTENSION_DECLARATION
----------------------------------
-- 3.2.1 Full Type Declaration --
----------------------------------
-- FULL_TYPE_DECLARATION ::=
-- type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
-- is TYPE_DEFINITION
-- [ASPECT_SPECIFICATIONS];
-- | TASK_TYPE_DECLARATION
-- | PROTECTED_TYPE_DECLARATION
-- The full type declaration node is used only for the first case. The
-- second case (concurrent type declaration), is represented directly
-- by a task type declaration or a protected type declaration.
-- N_Full_Type_Declaration
-- Sloc points to TYPE
-- Defining_Identifier (Node1)
-- Discriminant_Specifications (List4) (set to No_List if none)
-- Type_Definition (Node3)
-- Discr_Check_Funcs_Built (Flag11-Sem)
----------------------------
-- 3.2.1 Type Definition --
----------------------------
-- TYPE_DEFINITION ::=
-- ENUMERATION_TYPE_DEFINITION | INTEGER_TYPE_DEFINITION
-- | REAL_TYPE_DEFINITION | ARRAY_TYPE_DEFINITION
-- | RECORD_TYPE_DEFINITION | ACCESS_TYPE_DEFINITION
-- | DERIVED_TYPE_DEFINITION | INTERFACE_TYPE_DEFINITION
--------------------------------
-- 3.2.2 Subtype Declaration --
--------------------------------
-- SUBTYPE_DECLARATION ::=
-- subtype DEFINING_IDENTIFIER is [NULL_EXCLUSION] SUBTYPE_INDICATION
-- [ASPECT_SPECIFICATIONS];
-- The subtype indication field is set to Empty for subtypes
-- declared in package Standard (Positive, Natural).
-- N_Subtype_Declaration
-- Sloc points to SUBTYPE
-- Defining_Identifier (Node1)
-- Null_Exclusion_Present (Flag11)
-- Subtype_Indication (Node5)
-- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
-- Exception_Junk (Flag8-Sem)
-- Has_Dynamic_Range_Check (Flag12-Sem)
-------------------------------
-- 3.2.2 Subtype Indication --
-------------------------------
-- SUBTYPE_INDICATION ::= SUBTYPE_MARK [CONSTRAINT]
-- Note: if no constraint is present, the subtype indication appears
-- directly in the tree as a subtype mark. The N_Subtype_Indication
-- node is used only if a constraint is present.
-- Note: [For Ada 2005 (AI-231)]: Because Ada 2005 extends this rule
-- with the null-exclusion part (see AI-231), we had to introduce a new
-- attribute in all the parents of subtype_indication nodes to indicate
-- if the null-exclusion is present.
-- Note: the reason that this node has expression fields is that a
-- subtype indication can appear as an operand of a membership test.
-- N_Subtype_Indication
-- Sloc points to first token of subtype mark
-- Subtype_Mark (Node4)
-- Constraint (Node3)
-- Etype (Node5-Sem)
-- Must_Not_Freeze (Flag8-Sem)
-- Note: Etype is a copy of the Etype field of the Subtype_Mark. The
-- reason for this redundancy is so that in a list of array index types,
-- the Etype can be uniformly accessed to determine the subscript type.
-- This means that no Itype is constructed for the actual subtype that
-- is created by the subtype indication. If such an Itype is required,
-- it is constructed in the context in which the indication appears.
-------------------------
-- 3.2.2 Subtype Mark --
-------------------------
-- SUBTYPE_MARK ::= subtype_NAME
-----------------------
-- 3.2.2 Constraint --
-----------------------
-- CONSTRAINT ::= SCALAR_CONSTRAINT | COMPOSITE_CONSTRAINT
------------------------------
-- 3.2.2 Scalar Constraint --
------------------------------
-- SCALAR_CONSTRAINT ::=
-- RANGE_CONSTRAINT | DIGITS_CONSTRAINT | DELTA_CONSTRAINT
---------------------------------
-- 3.2.2 Composite Constraint --
---------------------------------
-- COMPOSITE_CONSTRAINT ::=
-- INDEX_CONSTRAINT | DISCRIMINANT_CONSTRAINT
-------------------------------
-- 3.3.1 Object Declaration --
-------------------------------
-- OBJECT_DECLARATION ::=
-- DEFINING_IDENTIFIER_LIST : [aliased] [constant]
-- [NULL_EXCLUSION] SUBTYPE_INDICATION [:= EXPRESSION]
-- [ASPECT_SPECIFICATIONS];
-- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
-- ACCESS_DEFINITION [:= EXPRESSION]
-- [ASPECT_SPECIFICATIONS];
-- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
-- ARRAY_TYPE_DEFINITION [:= EXPRESSION]
-- [ASPECT_SPECIFICATIONS];
-- | SINGLE_TASK_DECLARATION
-- | SINGLE_PROTECTED_DECLARATION
-- Note: aliased is not permitted in Ada 83 mode
-- The N_Object_Declaration node is only for the first two cases.
-- Single task declaration is handled by P_Task (9.1)
-- Single protected declaration is handled by P_protected (9.5)
-- Although the syntax allows multiple identifiers in the list, the
-- semantics is as though successive declarations were given with
-- identical type definition and expression components. To simplify
-- semantic processing, the parser represents a multiple declaration
-- case as a sequence of single declarations, using the More_Ids and
-- Prev_Ids flags to preserve the original source form as described
-- in the section on "Handling of Defining Identifier Lists".
-- The flag Has_Init_Expression is set if an initializing expression
-- is present. Normally it is set if and only if Expression contains
-- a non-empty value, but there is an exception to this. When the
-- initializing expression is an aggregate which requires explicit
-- assignments, the Expression field gets set to Empty, but this flag
-- is still set, so we don't forget we had an initializing expression.
-- Note: if a range check is required for the initialization
-- expression then the Do_Range_Check flag is set in the Expression,
-- with the check being done against the type given by the object
-- definition, which is also the Etype of the defining identifier.
-- Note: the contents of the Expression field must be ignored (i.e.
-- treated as though it were Empty) if No_Initialization is set True.
-- Note: the back end places some restrictions on the form of the
-- Expression field. If the object being declared is Atomic, then
-- the Expression may not have the form of an aggregate (since this
-- might cause the back end to generate separate assignments). In this
-- case the front end must generate an extra temporary and initialize
-- this temporary as required (the temporary itself is not atomic).
-- Note: there is not node kind for object definition. Instead, the
-- corresponding field holds a subtype indication, an array type
-- definition, or (Ada 2005, AI-406) an access definition.
-- N_Object_Declaration
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Aliased_Present (Flag4)
-- Constant_Present (Flag17) set if CONSTANT appears
-- Null_Exclusion_Present (Flag11)
-- Object_Definition (Node4) subtype indic./array type def./access def.
-- Expression (Node3) (set to Empty if not present)
-- Handler_List_Entry (Node2-Sem)
-- Corresponding_Generic_Association (Node5-Sem)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
-- No_Initialization (Flag13-Sem)
-- Assignment_OK (Flag15-Sem)
-- Exception_Junk (Flag8-Sem)
-- Is_Subprogram_Descriptor (Flag16-Sem)
-- Has_Init_Expression (Flag14)
-- Suppress_Assignment_Checks (Flag18-Sem)
-------------------------------------
-- 3.3.1 Defining Identifier List --
-------------------------------------
-- DEFINING_IDENTIFIER_LIST ::=
-- DEFINING_IDENTIFIER {, DEFINING_IDENTIFIER}
-------------------------------
-- 3.3.2 Number Declaration --
-------------------------------
-- NUMBER_DECLARATION ::=
-- DEFINING_IDENTIFIER_LIST : constant := static_EXPRESSION;
-- Although the syntax allows multiple identifiers in the list, the
-- semantics is as though successive declarations were given with
-- identical expressions. To simplify semantic processing, the parser
-- represents a multiple declaration case as a sequence of single
-- declarations, using the More_Ids and Prev_Ids flags to preserve
-- the original source form as described in the section on "Handling
-- of Defining Identifier Lists".
-- N_Number_Declaration
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Expression (Node3)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
----------------------------------
-- 3.4 Derived Type Definition --
----------------------------------
-- DERIVED_TYPE_DEFINITION ::=
-- [abstract] [limited] new [NULL_EXCLUSION] parent_SUBTYPE_INDICATION
-- [[and INTERFACE_LIST] RECORD_EXTENSION_PART]
-- Note: ABSTRACT, LIMITED and record extension part are not permitted
-- in Ada 83 mode
-- Note: a record extension part is required if ABSTRACT is present
-- N_Derived_Type_Definition
-- Sloc points to NEW
-- Abstract_Present (Flag4)
-- Null_Exclusion_Present (Flag11) (set to False if not present)
-- Subtype_Indication (Node5)
-- Record_Extension_Part (Node3) (set to Empty if not present)
-- Limited_Present (Flag17)
-- Task_Present (Flag5) set in task interfaces
-- Protected_Present (Flag6) set in protected interfaces
-- Synchronized_Present (Flag7) set in interfaces
-- Interface_List (List2) (set to No_List if none)
-- Interface_Present (Flag16) set in abstract interfaces
-- Note: Task_Present, Protected_Present, Synchronized_Present,
-- Interface_List, and Interface_Present are used for abstract
-- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
---------------------------
-- 3.5 Range Constraint --
---------------------------
-- RANGE_CONSTRAINT ::= range RANGE
-- N_Range_Constraint
-- Sloc points to RANGE
-- Range_Expression (Node4)
----------------
-- 3.5 Range --
----------------
-- RANGE ::=
-- RANGE_ATTRIBUTE_REFERENCE
-- | SIMPLE_EXPRESSION .. SIMPLE_EXPRESSION
-- Note: the case of a range given as a range attribute reference
-- appears directly in the tree as an attribute reference.
-- Note: the field name for a reference to a range is Range_Expression
-- rather than Range, because range is a reserved keyword in Ada!
-- Note: the reason that this node has expression fields is that a
-- range can appear as an operand of a membership test. The Etype
-- field is the type of the range (we do NOT construct an implicit
-- subtype to represent the range exactly).
-- N_Range
-- Sloc points to ..
-- Low_Bound (Node1)
-- High_Bound (Node2)
-- Includes_Infinities (Flag11)
-- plus fields for expression
-- Note: if the range appears in a context, such as a subtype
-- declaration, where range checks are required on one or both of
-- the expression fields, then type conversion nodes are inserted
-- to represent the required checks.
----------------------------------------
-- 3.5.1 Enumeration Type Definition --
----------------------------------------
-- ENUMERATION_TYPE_DEFINITION ::=
-- (ENUMERATION_LITERAL_SPECIFICATION
-- {, ENUMERATION_LITERAL_SPECIFICATION})
-- Note: the Literals field in the node described below is null for
-- the case of the standard types CHARACTER and WIDE_CHARACTER, for
-- which special processing handles these types as special cases.
-- N_Enumeration_Type_Definition
-- Sloc points to left parenthesis
-- Literals (List1) (Empty for CHARACTER or WIDE_CHARACTER)
-- End_Label (Node4) (set to Empty if internally generated record)
----------------------------------------------
-- 3.5.1 Enumeration Literal Specification --
----------------------------------------------
-- ENUMERATION_LITERAL_SPECIFICATION ::=
-- DEFINING_IDENTIFIER | DEFINING_CHARACTER_LITERAL
---------------------------------------
-- 3.5.1 Defining Character Literal --
---------------------------------------
-- DEFINING_CHARACTER_LITERAL ::= CHARACTER_LITERAL
-- A defining character literal is an entity, which has additional
-- fields depending on the setting of the Ekind field. These
-- additional fields are defined (and access subprograms declared)
-- in package Einfo.
-- Note: N_Defining_Character_Literal is an extended node whose fields
-- are deliberate layed out to match the layout of fields in an ordinary
-- N_Character_Literal node allowing for easy alteration of a character
-- literal node into a defining character literal node. For details, see
-- Sinfo.CN.Change_Character_Literal_To_Defining_Character_Literal.
-- N_Defining_Character_Literal
-- Sloc points to literal
-- Chars (Name1) contains the Name_Id for the identifier
-- Next_Entity (Node2-Sem)
-- Scope (Node3-Sem)
-- Etype (Node5-Sem)
------------------------------------
-- 3.5.4 Integer Type Definition --
------------------------------------
-- Note: there is an error in this rule in the latest version of the
-- grammar, so we have retained the old rule pending clarification.
-- INTEGER_TYPE_DEFINITION ::=
-- SIGNED_INTEGER_TYPE_DEFINITION
-- | MODULAR_TYPE_DEFINITION
-------------------------------------------
-- 3.5.4 Signed Integer Type Definition --
-------------------------------------------
-- SIGNED_INTEGER_TYPE_DEFINITION ::=
-- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
-- Note: the Low_Bound and High_Bound fields are set to Empty
-- for integer types defined in package Standard.
-- N_Signed_Integer_Type_Definition
-- Sloc points to RANGE
-- Low_Bound (Node1)
-- High_Bound (Node2)
------------------------------------
-- 3.5.4 Modular Type Definition --
------------------------------------
-- MODULAR_TYPE_DEFINITION ::= mod static_EXPRESSION
-- N_Modular_Type_Definition
-- Sloc points to MOD
-- Expression (Node3)
---------------------------------
-- 3.5.6 Real Type Definition --
---------------------------------
-- REAL_TYPE_DEFINITION ::=
-- FLOATING_POINT_DEFINITION | FIXED_POINT_DEFINITION
--------------------------------------
-- 3.5.7 Floating Point Definition --
--------------------------------------
-- FLOATING_POINT_DEFINITION ::=
-- digits static_SIMPLE_EXPRESSION [REAL_RANGE_SPECIFICATION]
-- Note: The Digits_Expression and Real_Range_Specifications fields
-- are set to Empty for floating-point types declared in Standard.
-- N_Floating_Point_Definition
-- Sloc points to DIGITS
-- Digits_Expression (Node2)
-- Real_Range_Specification (Node4) (set to Empty if not present)
-------------------------------------
-- 3.5.7 Real Range Specification --
-------------------------------------
-- REAL_RANGE_SPECIFICATION ::=
-- range static_SIMPLE_EXPRESSION .. static_SIMPLE_EXPRESSION
-- N_Real_Range_Specification
-- Sloc points to RANGE
-- Low_Bound (Node1)
-- High_Bound (Node2)
-----------------------------------
-- 3.5.9 Fixed Point Definition --
-----------------------------------
-- FIXED_POINT_DEFINITION ::=
-- ORDINARY_FIXED_POINT_DEFINITION | DECIMAL_FIXED_POINT_DEFINITION
--------------------------------------------
-- 3.5.9 Ordinary Fixed Point Definition --
--------------------------------------------
-- ORDINARY_FIXED_POINT_DEFINITION ::=
-- delta static_EXPRESSION REAL_RANGE_SPECIFICATION
-- Note: In Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
-- N_Ordinary_Fixed_Point_Definition
-- Sloc points to DELTA
-- Delta_Expression (Node3)
-- Real_Range_Specification (Node4)
-------------------------------------------
-- 3.5.9 Decimal Fixed Point Definition --
-------------------------------------------
-- DECIMAL_FIXED_POINT_DEFINITION ::=
-- delta static_EXPRESSION
-- digits static_EXPRESSION [REAL_RANGE_SPECIFICATION]
-- Note: decimal types are not permitted in Ada 83 mode
-- N_Decimal_Fixed_Point_Definition
-- Sloc points to DELTA
-- Delta_Expression (Node3)
-- Digits_Expression (Node2)
-- Real_Range_Specification (Node4) (set to Empty if not present)
------------------------------
-- 3.5.9 Digits Constraint --
------------------------------
-- DIGITS_CONSTRAINT ::=
-- digits static_EXPRESSION [RANGE_CONSTRAINT]
-- Note: in Ada 83, the EXPRESSION must be a SIMPLE_EXPRESSION
-- Note: in Ada 95, reduced accuracy subtypes are obsolescent
-- N_Digits_Constraint
-- Sloc points to DIGITS
-- Digits_Expression (Node2)
-- Range_Constraint (Node4) (set to Empty if not present)
--------------------------------
-- 3.6 Array Type Definition --
--------------------------------
-- ARRAY_TYPE_DEFINITION ::=
-- UNCONSTRAINED_ARRAY_DEFINITION | CONSTRAINED_ARRAY_DEFINITION
-----------------------------------------
-- 3.6 Unconstrained Array Definition --
-----------------------------------------
-- UNCONSTRAINED_ARRAY_DEFINITION ::=
-- array (INDEX_SUBTYPE_DEFINITION {, INDEX_SUBTYPE_DEFINITION}) of
-- COMPONENT_DEFINITION
-- Note: dimensionality of array is indicated by number of entries in
-- the Subtype_Marks list, which has one entry for each dimension.
-- N_Unconstrained_Array_Definition
-- Sloc points to ARRAY
-- Subtype_Marks (List2)
-- Component_Definition (Node4)
-----------------------------------
-- 3.6 Index Subtype Definition --
-----------------------------------
-- INDEX_SUBTYPE_DEFINITION ::= SUBTYPE_MARK range <>
-- There is no explicit node in the tree for an index subtype
-- definition since the N_Unconstrained_Array_Definition node
-- incorporates the type marks which appear in this context.
---------------------------------------
-- 3.6 Constrained Array Definition --
---------------------------------------
-- CONSTRAINED_ARRAY_DEFINITION ::=
-- array (DISCRETE_SUBTYPE_DEFINITION
-- {, DISCRETE_SUBTYPE_DEFINITION})
-- of COMPONENT_DEFINITION
-- Note: dimensionality of array is indicated by number of entries
-- in the Discrete_Subtype_Definitions list, which has one entry
-- for each dimension.
-- N_Constrained_Array_Definition
-- Sloc points to ARRAY
-- Discrete_Subtype_Definitions (List2)
-- Component_Definition (Node4)
--------------------------------------
-- 3.6 Discrete Subtype Definition --
--------------------------------------
-- DISCRETE_SUBTYPE_DEFINITION ::=
-- discrete_SUBTYPE_INDICATION | RANGE
-------------------------------
-- 3.6 Component Definition --
-------------------------------
-- COMPONENT_DEFINITION ::=
-- [aliased] [NULL_EXCLUSION] SUBTYPE_INDICATION | ACCESS_DEFINITION
-- Note: although the syntax does not permit a component definition to
-- be an anonymous array (and the parser will diagnose such an attempt
-- with an appropriate message), it is possible for anonymous arrays
-- to appear as component definitions. The semantics and back end handle
-- this case properly, and the expander in fact generates such cases.
-- Access_Definition is an optional field that gives support to
-- Ada 2005 (AI-230). The parser generates nodes that have either the
-- Subtype_Indication field or else the Access_Definition field.
-- N_Component_Definition
-- Sloc points to ALIASED, ACCESS or to first token of subtype mark
-- Aliased_Present (Flag4)
-- Null_Exclusion_Present (Flag11)
-- Subtype_Indication (Node5) (set to Empty if not present)
-- Access_Definition (Node3) (set to Empty if not present)
-----------------------------
-- 3.6.1 Index Constraint --
-----------------------------
-- INDEX_CONSTRAINT ::= (DISCRETE_RANGE {, DISCRETE_RANGE})
-- It is not in general possible to distinguish between discriminant
-- constraints and index constraints at parse time, since a simple
-- name could be either the subtype mark of a discrete range, or an
-- expression in a discriminant association with no name. Either
-- entry appears simply as the name, and the semantic parse must
-- distinguish between the two cases. Thus we use a common tree
-- node format for both of these constraint types.
-- See Discriminant_Constraint for format of node
---------------------------
-- 3.6.1 Discrete Range --
---------------------------
-- DISCRETE_RANGE ::= discrete_SUBTYPE_INDICATION | RANGE
----------------------------
-- 3.7 Discriminant Part --
----------------------------
-- DISCRIMINANT_PART ::=
-- UNKNOWN_DISCRIMINANT_PART | KNOWN_DISCRIMINANT_PART
------------------------------------
-- 3.7 Unknown Discriminant Part --
------------------------------------
-- UNKNOWN_DISCRIMINANT_PART ::= (<>)
-- Note: unknown discriminant parts are not permitted in Ada 83 mode
-- There is no explicit node in the tree for an unknown discriminant
-- part. Instead the Unknown_Discriminants_Present flag is set in the
-- parent node.
----------------------------------
-- 3.7 Known Discriminant Part --
----------------------------------
-- KNOWN_DISCRIMINANT_PART ::=
-- (DISCRIMINANT_SPECIFICATION {; DISCRIMINANT_SPECIFICATION})
-------------------------------------
-- 3.7 Discriminant Specification --
-------------------------------------
-- DISCRIMINANT_SPECIFICATION ::=
-- DEFINING_IDENTIFIER_LIST : [NULL_EXCLUSION] SUBTYPE_MARK
-- [:= DEFAULT_EXPRESSION]
-- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
-- [:= DEFAULT_EXPRESSION]
-- Although the syntax allows multiple identifiers in the list, the
-- semantics is as though successive specifications were given with
-- identical type definition and expression components. To simplify
-- semantic processing, the parser represents a multiple declaration
-- case as a sequence of single specifications, using the More_Ids and
-- Prev_Ids flags to preserve the original source form as described
-- in the section on "Handling of Defining Identifier Lists".
-- N_Discriminant_Specification
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Null_Exclusion_Present (Flag11)
-- Discriminant_Type (Node5) subtype mark or access parameter definition
-- Expression (Node3) (set to Empty if no default expression)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
-----------------------------
-- 3.7 Default Expression --
-----------------------------
-- DEFAULT_EXPRESSION ::= EXPRESSION
------------------------------------
-- 3.7.1 Discriminant Constraint --
------------------------------------
-- DISCRIMINANT_CONSTRAINT ::=
-- (DISCRIMINANT_ASSOCIATION {, DISCRIMINANT_ASSOCIATION})
-- It is not in general possible to distinguish between discriminant
-- constraints and index constraints at parse time, since a simple
-- name could be either the subtype mark of a discrete range, or an
-- expression in a discriminant association with no name. Either
-- entry appears simply as the name, and the semantic parse must
-- distinguish between the two cases. Thus we use a common tree
-- node format for both of these constraint types.
-- N_Index_Or_Discriminant_Constraint
-- Sloc points to left paren
-- Constraints (List1) points to list of discrete ranges or
-- discriminant associations
-------------------------------------
-- 3.7.1 Discriminant Association --
-------------------------------------
-- DISCRIMINANT_ASSOCIATION ::=
-- [discriminant_SELECTOR_NAME
-- {| discriminant_SELECTOR_NAME} =>] EXPRESSION
-- Note: a discriminant association that has no selector name list
-- appears directly as an expression in the tree.
-- N_Discriminant_Association
-- Sloc points to first token of discriminant association
-- Selector_Names (List1) (always non-empty, since if no selector
-- names are present, this node is not used, see comment above)
-- Expression (Node3)
---------------------------------
-- 3.8 Record Type Definition --
---------------------------------
-- RECORD_TYPE_DEFINITION ::=
-- [[abstract] tagged] [limited] RECORD_DEFINITION
-- Note: ABSTRACT, TAGGED, LIMITED are not permitted in Ada 83 mode
-- There is no explicit node in the tree for a record type definition.
-- Instead the flags for Tagged_Present and Limited_Present appear in
-- the N_Record_Definition node for a record definition appearing in
-- the context of a record type definition.
----------------------------
-- 3.8 Record Definition --
----------------------------
-- RECORD_DEFINITION ::=
-- record
-- COMPONENT_LIST
-- end record
-- | null record
-- Note: the Abstract_Present, Tagged_Present and Limited_Present
-- flags appear only for a record definition appearing in a record
-- type definition.
-- Note: the NULL RECORD case is not permitted in Ada 83
-- N_Record_Definition
-- Sloc points to RECORD or NULL
-- End_Label (Node4) (set to Empty if internally generated record)
-- Abstract_Present (Flag4)
-- Tagged_Present (Flag15)
-- Limited_Present (Flag17)
-- Component_List (Node1) empty in null record case
-- Null_Present (Flag13) set in null record case
-- Task_Present (Flag5) set in task interfaces
-- Protected_Present (Flag6) set in protected interfaces
-- Synchronized_Present (Flag7) set in interfaces
-- Interface_Present (Flag16) set in abstract interfaces
-- Interface_List (List2) (set to No_List if none)
-- Note: Task_Present, Protected_Present, Synchronized _Present,
-- Interface_List and Interface_Present are used for abstract
-- interfaces (see comments for INTERFACE_TYPE_DEFINITION).
-------------------------
-- 3.8 Component List --
-------------------------
-- COMPONENT_LIST ::=
-- COMPONENT_ITEM {COMPONENT_ITEM}
-- | {COMPONENT_ITEM} VARIANT_PART
-- | null;
-- N_Component_List
-- Sloc points to first token of component list
-- Component_Items (List3)
-- Variant_Part (Node4) (set to Empty if no variant part)
-- Null_Present (Flag13)
-------------------------
-- 3.8 Component Item --
-------------------------
-- COMPONENT_ITEM ::= COMPONENT_DECLARATION | REPRESENTATION_CLAUSE
-- Note: A component item can also be a pragma, and in the tree
-- that is obtained after semantic processing, a component item
-- can be an N_Null node resulting from a non-recognized pragma.
--------------------------------
-- 3.8 Component Declaration --
--------------------------------
-- COMPONENT_DECLARATION ::=
-- DEFINING_IDENTIFIER_LIST : COMPONENT_DEFINITION
-- [:= DEFAULT_EXPRESSION]
-- [ASPECT_SPECIFICATIONS];
-- Note: although the syntax does not permit a component definition to
-- be an anonymous array (and the parser will diagnose such an attempt
-- with an appropriate message), it is possible for anonymous arrays
-- to appear as component definitions. The semantics and back end handle
-- this case properly, and the expander in fact generates such cases.
-- Although the syntax allows multiple identifiers in the list, the
-- semantics is as though successive declarations were given with the
-- same component definition and expression components. To simplify
-- semantic processing, the parser represents a multiple declaration
-- case as a sequence of single declarations, using the More_Ids and
-- Prev_Ids flags to preserve the original source form as described
-- in the section on "Handling of Defining Identifier Lists".
-- N_Component_Declaration
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Component_Definition (Node4)
-- Expression (Node3) (set to Empty if no default expression)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
-------------------------
-- 3.8.1 Variant Part --
-------------------------
-- VARIANT_PART ::=
-- case discriminant_DIRECT_NAME is
-- VARIANT {VARIANT}
-- end case;
-- Note: the variants list can contain pragmas as well as variants.
-- In a properly formed program there is at least one variant.
-- N_Variant_Part
-- Sloc points to CASE
-- Name (Node2)
-- Variants (List1)
--------------------
-- 3.8.1 Variant --
--------------------
-- VARIANT ::=
-- when DISCRETE_CHOICE_LIST =>
-- COMPONENT_LIST
-- N_Variant
-- Sloc points to WHEN
-- Discrete_Choices (List4)
-- Component_List (Node1)
-- Enclosing_Variant (Node2-Sem)
-- Present_Expr (Uint3-Sem)
-- Dcheck_Function (Node5-Sem)
-- Has_SP_Choice (Flag15-Sem)
-- Note: in the list of Discrete_Choices, the tree passed to the back
-- end does not have choice entries corresponding to names of statically
-- predicated subtypes. Such entries are always expanded out to the list
-- of equivalent values or ranges. The ASIS tree generated in -gnatct
-- mode also has this expansion, but done with a proper Rewrite call on
-- the N_Variant node so that ASIS can properly retrieve the original.
---------------------------------
-- 3.8.1 Discrete Choice List --
---------------------------------
-- DISCRETE_CHOICE_LIST ::= DISCRETE_CHOICE {| DISCRETE_CHOICE}
----------------------------
-- 3.8.1 Discrete Choice --
----------------------------
-- DISCRETE_CHOICE ::= EXPRESSION | DISCRETE_RANGE | others
-- Note: in Ada 83 mode, the expression must be a simple expression
-- The only choice that appears explicitly is the OTHERS choice, as
-- defined here. Other cases of discrete choice (expression and
-- discrete range) appear directly. This production is also used
-- for the OTHERS possibility of an exception choice.
-- Note: in accordance with the syntax, the parser does not check that
-- OTHERS appears at the end on its own in a choice list context. This
-- is a semantic check.
-- N_Others_Choice
-- Sloc points to OTHERS
-- Others_Discrete_Choices (List1-Sem)
-- All_Others (Flag11-Sem)
----------------------------------
-- 3.9.1 Record Extension Part --
----------------------------------
-- RECORD_EXTENSION_PART ::= with RECORD_DEFINITION
-- Note: record extension parts are not permitted in Ada 83 mode
--------------------------------------
-- 3.9.4 Interface Type Definition --
--------------------------------------
-- INTERFACE_TYPE_DEFINITION ::=
-- [limited | task | protected | synchronized]
-- interface [interface_list]
-- Note: Interfaces are implemented with N_Record_Definition and
-- N_Derived_Type_Definition nodes because most of the support
-- for the analysis of abstract types has been reused to
-- analyze abstract interfaces.
----------------------------------
-- 3.10 Access Type Definition --
----------------------------------
-- ACCESS_TYPE_DEFINITION ::=
-- ACCESS_TO_OBJECT_DEFINITION
-- | ACCESS_TO_SUBPROGRAM_DEFINITION
--------------------------
-- 3.10 Null Exclusion --
--------------------------
-- NULL_EXCLUSION ::= not null
---------------------------------------
-- 3.10 Access To Object Definition --
---------------------------------------
-- ACCESS_TO_OBJECT_DEFINITION ::=
-- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER]
-- SUBTYPE_INDICATION
-- N_Access_To_Object_Definition
-- Sloc points to ACCESS
-- All_Present (Flag15)
-- Null_Exclusion_Present (Flag11)
-- Subtype_Indication (Node5)
-- Constant_Present (Flag17)
-----------------------------------
-- 3.10 General Access Modifier --
-----------------------------------
-- GENERAL_ACCESS_MODIFIER ::= all | constant
-- Note: general access modifiers are not permitted in Ada 83 mode
-- There is no explicit node in the tree for general access modifier.
-- Instead the All_Present or Constant_Present flags are set in the
-- parent node.
-------------------------------------------
-- 3.10 Access To Subprogram Definition --
-------------------------------------------
-- ACCESS_TO_SUBPROGRAM_DEFINITION
-- [NULL_EXCLUSION] access [protected] procedure PARAMETER_PROFILE
-- | [NULL_EXCLUSION] access [protected] function
-- PARAMETER_AND_RESULT_PROFILE
-- Note: access to subprograms are not permitted in Ada 83 mode
-- N_Access_Function_Definition
-- Sloc points to ACCESS
-- Null_Exclusion_Present (Flag11)
-- Null_Exclusion_In_Return_Present (Flag14)
-- Protected_Present (Flag6)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-- Result_Definition (Node4) result subtype (subtype mark or access def)
-- N_Access_Procedure_Definition
-- Sloc points to ACCESS
-- Null_Exclusion_Present (Flag11)
-- Protected_Present (Flag6)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-----------------------------
-- 3.10 Access Definition --
-----------------------------
-- ACCESS_DEFINITION ::=
-- [NULL_EXCLUSION] access [GENERAL_ACCESS_MODIFIER] SUBTYPE_MARK
-- | ACCESS_TO_SUBPROGRAM_DEFINITION
-- Note: access to subprograms are an Ada 2005 (AI-254) extension
-- N_Access_Definition
-- Sloc points to ACCESS
-- Null_Exclusion_Present (Flag11)
-- All_Present (Flag15)
-- Constant_Present (Flag17)
-- Subtype_Mark (Node4)
-- Access_To_Subprogram_Definition (Node3) (set to Empty if not present)
-----------------------------------------
-- 3.10.1 Incomplete Type Declaration --
-----------------------------------------
-- INCOMPLETE_TYPE_DECLARATION ::=
-- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [IS TAGGED];
-- N_Incomplete_Type_Declaration
-- Sloc points to TYPE
-- Defining_Identifier (Node1)
-- Discriminant_Specifications (List4) (set to No_List if no
-- discriminant part, or if the discriminant part is an
-- unknown discriminant part)
-- Premature_Use (Node5-Sem) used for improved diagnostics.
-- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
-- Tagged_Present (Flag15)
----------------------------
-- 3.11 Declarative Part --
----------------------------
-- DECLARATIVE_PART ::= {DECLARATIVE_ITEM}
-- Note: although the parser enforces the syntactic requirement that
-- a declarative part can contain only declarations, the semantic
-- processing may add statements to the list of actions in a
-- declarative part, so the code generator should be prepared
-- to accept a statement in this position.
----------------------------
-- 3.11 Declarative Item --
----------------------------
-- DECLARATIVE_ITEM ::= BASIC_DECLARATIVE_ITEM | BODY
----------------------------------
-- 3.11 Basic Declarative Item --
----------------------------------
-- BASIC_DECLARATIVE_ITEM ::=
-- BASIC_DECLARATION | REPRESENTATION_CLAUSE | USE_CLAUSE
----------------
-- 3.11 Body --
----------------
-- BODY ::= PROPER_BODY | BODY_STUB
-----------------------
-- 3.11 Proper Body --
-----------------------
-- PROPER_BODY ::=
-- SUBPROGRAM_BODY | PACKAGE_BODY | TASK_BODY | PROTECTED_BODY
---------------
-- 4.1 Name --
---------------
-- NAME ::=
-- DIRECT_NAME | EXPLICIT_DEREFERENCE
-- | INDEXED_COMPONENT | SLICE
-- | SELECTED_COMPONENT | ATTRIBUTE_REFERENCE
-- | TYPE_CONVERSION | FUNCTION_CALL
-- | CHARACTER_LITERAL
----------------------
-- 4.1 Direct Name --
----------------------
-- DIRECT_NAME ::= IDENTIFIER | OPERATOR_SYMBOL
-----------------
-- 4.1 Prefix --
-----------------
-- PREFIX ::= NAME | IMPLICIT_DEREFERENCE
-------------------------------
-- 4.1 Explicit Dereference --
-------------------------------
-- EXPLICIT_DEREFERENCE ::= NAME . all
-- N_Explicit_Dereference
-- Sloc points to ALL
-- Prefix (Node3)
-- Actual_Designated_Subtype (Node4-Sem)
-- Atomic_Sync_Required (Flag14-Sem)
-- Has_Dereference_Action (Flag13-Sem)
-- plus fields for expression
-------------------------------
-- 4.1 Implicit Dereference --
-------------------------------
-- IMPLICIT_DEREFERENCE ::= NAME
------------------------------
-- 4.1.1 Indexed Component --
------------------------------
-- INDEXED_COMPONENT ::= PREFIX (EXPRESSION {, EXPRESSION})
-- Note: the parser may generate this node in some situations where it
-- should be a function call. The semantic pass must correct this
-- misidentification (which is inevitable at the parser level).
-- N_Indexed_Component
-- Sloc contains a copy of the Sloc value of the Prefix
-- Prefix (Node3)
-- Expressions (List1)
-- Atomic_Sync_Required (Flag14-Sem)
-- plus fields for expression
-- Note: if any of the subscripts requires a range check, then the
-- Do_Range_Check flag is set on the corresponding expression, with
-- the index type being determined from the type of the Prefix, which
-- references the array being indexed.
-- Note: in a fully analyzed and expanded indexed component node, and
-- hence in any such node that gigi sees, if the prefix is an access
-- type, then an explicit dereference operation has been inserted.
------------------
-- 4.1.2 Slice --
------------------
-- SLICE ::= PREFIX (DISCRETE_RANGE)
-- Note: an implicit subtype is created to describe the resulting
-- type, so that the bounds of this type are the bounds of the slice.
-- N_Slice
-- Sloc points to first token of prefix
-- Prefix (Node3)
-- Discrete_Range (Node4)
-- plus fields for expression
-------------------------------
-- 4.1.3 Selected Component --
-------------------------------
-- SELECTED_COMPONENT ::= PREFIX . SELECTOR_NAME
-- Note: selected components that are semantically expanded names get
-- changed during semantic processing into the separate N_Expanded_Name
-- node. See description of this node in the section on semantic nodes.
-- N_Selected_Component
-- Sloc points to period
-- Prefix (Node3)
-- Selector_Name (Node2)
-- Associated_Node (Node4-Sem)
-- Do_Discriminant_Check (Flag1-Sem)
-- Is_In_Discriminant_Check (Flag11-Sem)
-- Is_Prefixed_Call (Flag17-Sem)
-- Atomic_Sync_Required (Flag14-Sem)
-- plus fields for expression
--------------------------
-- 4.1.3 Selector Name --
--------------------------
-- SELECTOR_NAME ::= IDENTIFIER | CHARACTER_LITERAL | OPERATOR_SYMBOL
--------------------------------
-- 4.1.4 Attribute Reference --
--------------------------------
-- ATTRIBUTE_REFERENCE ::= PREFIX ' ATTRIBUTE_DESIGNATOR
-- Note: the syntax is quite ambiguous at this point. Consider:
-- A'Length (X) X is part of the attribute designator
-- A'Pos (X) X is an explicit actual parameter of function A'Pos
-- A'Class (X) X is the expression of a type conversion
-- It would be possible for the parser to distinguish these cases
-- by looking at the attribute identifier. However, that would mean
-- more work in introducing new implementation defined attributes,
-- and also it would mean that special processing for attributes
-- would be scattered around, instead of being centralized in the
-- semantic routine that handles an N_Attribute_Reference node.
-- Consequently, the parser in all the above cases stores the
-- expression (X in these examples) as a single element list in
-- in the Expressions field of the N_Attribute_Reference node.
-- Similarly, for attributes like Max which take two arguments,
-- we store the two arguments as a two element list in the
-- Expressions field. Of course it is clear at parse time that
-- this case is really a function call with an attribute as the
-- prefix, but it turns out to be convenient to handle the two
-- argument case in a similar manner to the one argument case,
-- and indeed in general the parser will accept any number of
-- expressions in this position and store them as a list in the
-- attribute reference node. This allows for future addition of
-- attributes that take more than two arguments.
-- Note: named associates are not permitted in function calls where
-- the function is an attribute (see RM 6.4(3)) so it is legitimate
-- to skip the normal subprogram argument processing.
-- Note: for the attributes whose designators are technically keywords,
-- i.e. digits, access, delta, range, the Attribute_Name field contains
-- the corresponding name, even though no identifier is involved.
-- Note: the generated code may contain stream attributes applied to
-- limited types for which no stream routines exist officially. In such
-- case, the result is to use the stream attribute for the underlying
-- full type, or in the case of a protected type, the components
-- (including any discriminants) are merely streamed in order.
-- See Exp_Attr for a complete description of which attributes are
-- passed onto Gigi, and which are handled entirely by the front end.
-- Gigi restriction: For the Pos attribute, the prefix cannot be
-- a non-standard enumeration type or a nonzero/zero semantics
-- boolean type, so the value is simply the stored representation.
-- Gigi requirement: For the Mechanism_Code attribute, if the prefix
-- references a subprogram that is a renaming, then the front end must
-- rewrite the attribute to refer directly to the renamed entity.
-- Note: In generated code, the Address and Unrestricted_Access
-- attributes can be applied to any expression, and the meaning is
-- to create an object containing the value (the object is in the
-- current stack frame), and pass the address of this value. If the
-- Must_Be_Byte_Aligned flag is set, then the object whose address
-- is taken must be on a byte (storage unit) boundary, and if it is
-- not (or may not be), then the generated code must create a copy
-- that is byte aligned, and pass the address of this copy.
-- N_Attribute_Reference
-- Sloc points to apostrophe
-- Prefix (Node3)
-- Attribute_Name (Name2) identifier name from attribute designator
-- Expressions (List1) (set to No_List if no associated expressions)
-- Entity (Node4-Sem) used if the attribute yields a type
-- Associated_Node (Node4-Sem)
-- Do_Overflow_Check (Flag17-Sem)
-- Header_Size_Added (Flag11-Sem)
-- Redundant_Use (Flag13-Sem)
-- Must_Be_Byte_Aligned (Flag14)
-- plus fields for expression
---------------------------------
-- 4.1.4 Attribute Designator --
---------------------------------
-- ATTRIBUTE_DESIGNATOR ::=
-- IDENTIFIER [(static_EXPRESSION)]
-- | access | delta | digits
-- There is no explicit node in the tree for an attribute designator.
-- Instead the Attribute_Name and Expressions fields of the parent
-- node (N_Attribute_Reference node) hold the information.
-- Note: if ACCESS, DELTA or DIGITS appears in an attribute
-- designator, then they are treated as identifiers internally
-- rather than the keywords of the same name.
--------------------------------------
-- 4.1.4 Range Attribute Reference --
--------------------------------------
-- RANGE_ATTRIBUTE_REFERENCE ::= PREFIX ' RANGE_ATTRIBUTE_DESIGNATOR
-- A range attribute reference is represented in the tree using the
-- normal N_Attribute_Reference node.
---------------------------------------
-- 4.1.4 Range Attribute Designator --
---------------------------------------
-- RANGE_ATTRIBUTE_DESIGNATOR ::= Range [(static_EXPRESSION)]
-- A range attribute designator is represented in the tree using the
-- normal N_Attribute_Reference node.
--------------------
-- 4.3 Aggregate --
--------------------
-- AGGREGATE ::=
-- RECORD_AGGREGATE | EXTENSION_AGGREGATE | ARRAY_AGGREGATE
-----------------------------
-- 4.3.1 Record Aggregate --
-----------------------------
-- RECORD_AGGREGATE ::= (RECORD_COMPONENT_ASSOCIATION_LIST)
-- N_Aggregate
-- Sloc points to left parenthesis
-- Expressions (List1) (set to No_List if none or null record case)
-- Component_Associations (List2) (set to No_List if none)
-- Null_Record_Present (Flag17)
-- Aggregate_Bounds (Node3-Sem)
-- Associated_Node (Node4-Sem)
-- Compile_Time_Known_Aggregate (Flag18-Sem)
-- Expansion_Delayed (Flag11-Sem)
-- Has_Self_Reference (Flag13-Sem)
-- plus fields for expression
-- Note: this structure is used for both record and array aggregates
-- since the two cases are not separable by the parser. The parser
-- makes no attempt to enforce consistency here, so it is up to the
-- semantic phase to make sure that the aggregate is consistent (i.e.
-- that it is not a "half-and-half" case that mixes record and array
-- syntax. In particular, for a record aggregate, the expressions
-- field will be set if there are positional associations.
-- Note: N_Aggregate is not used for all aggregates; in particular,
-- there is a separate node kind for extension aggregates.
-- Note: gigi/gcc can handle array aggregates correctly providing that
-- they are entirely positional, and the array subtype involved has a
-- known at compile time length and is not bit packed, or a convention
-- Fortran array with more than one dimension. If these conditions
-- are not met, then the front end must translate the aggregate into
-- an appropriate set of assignments into a temporary.
-- Note: for the record aggregate case, gigi/gcc can handle all cases of
-- record aggregates, including those for packed, and rep-claused
-- records, and also variant records, providing that there are no
-- variable length fields whose size is not known at compile time, and
-- providing that the aggregate is presented in fully named form.
----------------------------------------------
-- 4.3.1 Record Component Association List --
----------------------------------------------
-- RECORD_COMPONENT_ASSOCIATION_LIST ::=
-- RECORD_COMPONENT_ASSOCIATION {, RECORD_COMPONENT_ASSOCIATION}
-- | null record
-- There is no explicit node in the tree for a record component
-- association list. Instead the Null_Record_Present flag is set in
-- the parent node for the NULL RECORD case.
------------------------------------------------------
-- 4.3.1 Record Component Association (also 4.3.3) --
------------------------------------------------------
-- RECORD_COMPONENT_ASSOCIATION ::=
-- [COMPONENT_CHOICE_LIST =>] EXPRESSION
-- N_Component_Association
-- Sloc points to first selector name
-- Choices (List1)
-- Loop_Actions (List2-Sem)
-- Expression (Node3) (empty if Box_Present)
-- Box_Present (Flag15)
-- Inherited_Discriminant (Flag13)
-- Note: this structure is used for both record component associations
-- and array component associations, since the two cases aren't always
-- separable by the parser. The choices list may represent either a
-- list of selector names in the record aggregate case, or a list of
-- discrete choices in the array aggregate case or an N_Others_Choice
-- node (which appears as a singleton list). Box_Present gives support
-- to Ada 2005 (AI-287).
----------------------------------
-- 4.3.1 Component Choice List --
----------------------------------
-- COMPONENT_CHOICE_LIST ::=
-- component_SELECTOR_NAME {| component_SELECTOR_NAME}
-- | others
-- The entries of a component choice list appear in the Choices list of
-- the associated N_Component_Association, as either selector names, or
-- as an N_Others_Choice node.
--------------------------------
-- 4.3.2 Extension Aggregate --
--------------------------------
-- EXTENSION_AGGREGATE ::=
-- (ANCESTOR_PART with RECORD_COMPONENT_ASSOCIATION_LIST)
-- Note: extension aggregates are not permitted in Ada 83 mode
-- N_Extension_Aggregate
-- Sloc points to left parenthesis
-- Ancestor_Part (Node3)
-- Associated_Node (Node4-Sem)
-- Expressions (List1) (set to No_List if none or null record case)
-- Component_Associations (List2) (set to No_List if none)
-- Null_Record_Present (Flag17)
-- Expansion_Delayed (Flag11-Sem)
-- Has_Self_Reference (Flag13-Sem)
-- plus fields for expression
--------------------------
-- 4.3.2 Ancestor Part --
--------------------------
-- ANCESTOR_PART ::= EXPRESSION | SUBTYPE_MARK
----------------------------
-- 4.3.3 Array Aggregate --
----------------------------
-- ARRAY_AGGREGATE ::=
-- POSITIONAL_ARRAY_AGGREGATE | NAMED_ARRAY_AGGREGATE
---------------------------------------
-- 4.3.3 Positional Array Aggregate --
---------------------------------------
-- POSITIONAL_ARRAY_AGGREGATE ::=
-- (EXPRESSION, EXPRESSION {, EXPRESSION})
-- | (EXPRESSION {, EXPRESSION}, others => EXPRESSION)
-- See Record_Aggregate (4.3.1) for node structure
----------------------------------
-- 4.3.3 Named Array Aggregate --
----------------------------------
-- NAMED_ARRAY_AGGREGATE ::=
-- | (ARRAY_COMPONENT_ASSOCIATION {, ARRAY_COMPONENT_ASSOCIATION})
-- See Record_Aggregate (4.3.1) for node structure
----------------------------------------
-- 4.3.3 Array Component Association --
----------------------------------------
-- ARRAY_COMPONENT_ASSOCIATION ::=
-- DISCRETE_CHOICE_LIST => EXPRESSION
-- See Record_Component_Association (4.3.1) for node structure
--------------------------------------------------
-- 4.4 Expression/Relation/Term/Factor/Primary --
--------------------------------------------------
-- EXPRESSION ::=
-- RELATION {LOGICAL_OPERATOR RELATION}
-- CHOICE_EXPRESSION ::=
-- CHOICE_RELATION {LOGICAL_OPERATOR CHOICE_RELATION}
-- CHOICE_RELATION ::=
-- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
-- RELATION ::=
-- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
-- | RAISE_EXPRESSION
-- MEMBERSHIP_CHOICE_LIST ::=
-- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
-- MEMBERSHIP_CHOICE ::=
-- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
-- LOGICAL_OPERATOR ::= and | and then | or | or else | xor
-- SIMPLE_EXPRESSION ::=
-- [UNARY_ADDING_OPERATOR] TERM {BINARY_ADDING_OPERATOR TERM}
-- TERM ::= FACTOR {MULTIPLYING_OPERATOR FACTOR}
-- FACTOR ::= PRIMARY [** PRIMARY] | abs PRIMARY | not PRIMARY
-- No nodes are generated for any of these constructs. Instead, the
-- node for the operator appears directly. When we refer to an
-- expression in this description, we mean any of the possible
-- constituent components of an expression (e.g. identifier is
-- an example of an expression).
-- Note: the above syntax is that Ada 2012 syntax which restricts
-- choice relations to simple expressions to avoid ambiguities in
-- some contexts with set membership notation. It has been decided
-- that in retrospect, the Ada 95 change allowing general expressions
-- in this context was a mistake, so we have reverted to the above
-- syntax in Ada 95 and Ada 2005 modes (the restriction to simple
-- expressions was there in Ada 83 from the start).
------------------
-- 4.4 Primary --
------------------
-- PRIMARY ::=
-- NUMERIC_LITERAL | null
-- | STRING_LITERAL | AGGREGATE
-- | NAME | QUALIFIED_EXPRESSION
-- | ALLOCATOR | (EXPRESSION)
-- Usually there is no explicit node in the tree for primary. Instead
-- the constituent (e.g. AGGREGATE) appears directly. There are two
-- exceptions. First, there is an explicit node for a null primary.
-- N_Null
-- Sloc points to NULL
-- plus fields for expression
-- Second, the case of (EXPRESSION) is handled specially. Ada requires
-- that the parser keep track of which subexpressions are enclosed
-- in parentheses, and how many levels of parentheses are used. This
-- information is required for optimization purposes, and also for
-- some semantic checks (e.g. (((1))) in a procedure spec does not
-- conform with ((((1)))) in the body).
-- The parentheses are recorded by keeping a Paren_Count field in every
-- subexpression node (it is actually present in all nodes, but only
-- used in subexpression nodes). This count records the number of
-- levels of parentheses. If the number of levels in the source exceeds
-- the maximum accommodated by this count, then the count is simply left
-- at the maximum value. This means that there are some pathological
-- cases of failure to detect conformance failures (e.g. an expression
-- with 500 levels of parens will conform with one with 501 levels),
-- but we do not need to lose sleep over this.
-- Historical note: in versions of GNAT prior to 1.75, there was a node
-- type N_Parenthesized_Expression used to accurately record unlimited
-- numbers of levels of parentheses. However, it turned out to be a
-- real nuisance to have to take into account the possible presence of
-- this node during semantic analysis, since basically parentheses have
-- zero relevance to semantic analysis.
-- Note: the level of parentheses always present in things like
-- aggregates does not count, only the parentheses in the primary
-- (EXPRESSION) affect the setting of the Paren_Count field.
-- 2nd Note: the contents of the Expression field must be ignored (i.e.
-- treated as though it were Empty) if No_Initialization is set True.
--------------------------------------
-- 4.5 Short Circuit Control Forms --
--------------------------------------
-- EXPRESSION ::=
-- RELATION {and then RELATION} | RELATION {or else RELATION}
-- Gigi restriction: For both these control forms, the operand and
-- result types are always Standard.Boolean. The expander inserts the
-- required conversion operations where needed to ensure this is the
-- case.
-- N_And_Then
-- Sloc points to AND of AND THEN
-- Left_Opnd (Node2)
-- Right_Opnd (Node3)
-- Actions (List1-Sem)
-- plus fields for expression
-- N_Or_Else
-- Sloc points to OR of OR ELSE
-- Left_Opnd (Node2)
-- Right_Opnd (Node3)
-- Actions (List1-Sem)
-- plus fields for expression
-- Note: The Actions field is used to hold actions associated with
-- the right hand operand. These have to be treated specially since
-- they are not unconditionally executed. See Insert_Actions for a
-- more detailed description of how these actions are handled.
---------------------------
-- 4.5 Membership Tests --
---------------------------
-- RELATION ::=
-- SIMPLE_EXPRESSION [not] in MEMBERSHIP_CHOICE_LIST
-- MEMBERSHIP_CHOICE_LIST ::=
-- MEMBERSHIP_CHOICE {'|' MEMBERSHIP CHOICE}
-- MEMBERSHIP_CHOICE ::=
-- CHOICE_EXPRESSION | RANGE | SUBTYPE_MARK
-- Note: although the grammar above allows only a range or a subtype
-- mark, the parser in fact will accept any simple expression in place
-- of a subtype mark. This means that the semantic analyzer must be able
-- to deal with, and diagnose a simple expression other than a name for
-- the right operand. This simplifies error recovery in the parser.
-- The Alternatives field below is present only if there is more
-- than one Membership_Choice present (which is legitimate only in
-- Ada 2012 mode) in which case Right_Opnd is Empty, and Alternatives
-- contains the list of choices. In the tree passed to the back end,
-- Alternatives is always No_List, and Right_Opnd is set (i.e. the
-- expansion circuitry expands out the complex set membership case
-- using simple membership operations).
-- Should we rename Alternatives here to Membership_Choices ???
-- N_In
-- Sloc points to IN
-- Left_Opnd (Node2)
-- Right_Opnd (Node3)
-- Alternatives (List4) (set to No_List if only one set alternative)
-- No_Minimize_Eliminate (Flag17)
-- plus fields for expression
-- N_Not_In
-- Sloc points to NOT of NOT IN
-- Left_Opnd (Node2)
-- Right_Opnd (Node3)
-- Alternatives (List4) (set to No_List if only one set alternative)
-- No_Minimize_Eliminate (Flag17)
-- plus fields for expression
--------------------
-- 4.5 Operators --
--------------------
-- LOGICAL_OPERATOR ::= and | or | xor
-- RELATIONAL_OPERATOR ::= = | /= | < | <= | > | >=
-- BINARY_ADDING_OPERATOR ::= + | - | &
-- UNARY_ADDING_OPERATOR ::= + | -
-- MULTIPLYING_OPERATOR ::= * | / | mod | rem
-- HIGHEST_PRECEDENCE_OPERATOR ::= ** | abs | not
-- Sprint syntax if Treat_Fixed_As_Integer is set:
-- x #* y
-- x #/ y
-- x #mod y
-- x #rem y
-- Gigi restriction: For * / mod rem with fixed-point operands, Gigi
-- will only be given nodes with the Treat_Fixed_As_Integer flag set.
-- All handling of smalls for multiplication and division is handled
-- by the front end (mod and rem result only from expansion). Gigi
-- thus never needs to worry about small values (for other operators
-- operating on fixed-point, e.g. addition, the small value does not
-- have any semantic effect anyway, these are always integer operations.
-- Gigi restriction: For all operators taking Boolean operands, the
-- type is always Standard.Boolean. The expander inserts the required
-- conversion operations where needed to ensure this is the case.
-- N_Op_And
-- Sloc points to AND
-- Do_Length_Check (Flag4-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Or
-- Sloc points to OR
-- Do_Length_Check (Flag4-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Xor
-- Sloc points to XOR
-- Do_Length_Check (Flag4-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Eq
-- Sloc points to =
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Ne
-- Sloc points to /=
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Lt
-- Sloc points to <
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Le
-- Sloc points to <=
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Gt
-- Sloc points to >
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Ge
-- Sloc points to >=
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Add
-- Sloc points to + (binary)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Subtract
-- Sloc points to - (binary)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Concat
-- Sloc points to &
-- Is_Component_Left_Opnd (Flag13-Sem)
-- Is_Component_Right_Opnd (Flag14-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Multiply
-- Sloc points to *
-- Treat_Fixed_As_Integer (Flag14-Sem)
-- Rounded_Result (Flag18-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Divide
-- Sloc points to /
-- Treat_Fixed_As_Integer (Flag14-Sem)
-- Do_Division_Check (Flag13-Sem)
-- Rounded_Result (Flag18-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Mod
-- Sloc points to MOD
-- Treat_Fixed_As_Integer (Flag14-Sem)
-- Do_Division_Check (Flag13-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Rem
-- Sloc points to REM
-- Treat_Fixed_As_Integer (Flag14-Sem)
-- Do_Division_Check (Flag13-Sem)
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Expon
-- Is_Power_Of_2_For_Shift (Flag13-Sem)
-- Sloc points to **
-- plus fields for binary operator
-- plus fields for expression
-- N_Op_Plus
-- Sloc points to + (unary)
-- plus fields for unary operator
-- plus fields for expression
-- N_Op_Minus
-- Sloc points to - (unary)
-- plus fields for unary operator
-- plus fields for expression
-- N_Op_Abs
-- Sloc points to ABS
-- plus fields for unary operator
-- plus fields for expression
-- N_Op_Not
-- Sloc points to NOT
-- plus fields for unary operator
-- plus fields for expression
-- See also shift operators in section B.2
-- Note on fixed-point operations passed to Gigi: For adding operators,
-- the semantics is to treat these simply as integer operations, with
-- the small values being ignored (the bounds are already stored in
-- units of small, so that constraint checking works as usual). For the
-- case of multiply/divide/rem/mod operations, Gigi will only see fixed
-- point operands if the Treat_Fixed_As_Integer flag is set and will
-- thus treat these nodes in identical manner, ignoring small values.
-- Note on overflow handling: When the overflow checking mode is set to
-- MINIMIZED or ELIMINATED, nodes for signed arithmetic operations may
-- be modified to use a larger type for the operands and result. In
-- the case where the computed range exceeds that of Long_Long_Integer,
-- and we are running in ELIMINATED mode, the operator node will be
-- changed to be a call to the appropriate routine in System.Bignums.
------------------------------------
-- 4.5.7 Conditional Expressions --
------------------------------------
-- CONDITIONAL_EXPRESSION ::= IF_EXPRESSION | CASE_EXPRESSION
--------------------------
-- 4.5.7 If Expression --
----------------------------
-- IF_EXPRESSION ::=
-- if CONDITION then DEPENDENT_EXPRESSION
-- {elsif CONDITION then DEPENDENT_EXPRESSION}
-- [else DEPENDENT_EXPRESSION]
-- DEPENDENT_EXPRESSION ::= EXPRESSION
-- Note: if we have (IF x1 THEN x2 ELSIF x3 THEN x4 ELSE x5) then it
-- is represented as (IF x1 THEN x2 ELSE (IF x3 THEN x4 ELSE x5)) and
-- the Is_Elsif flag is set on the inner if expression.
-- N_If_Expression
-- Sloc points to IF or ELSIF keyword
-- Expressions (List1)
-- Then_Actions (List2-Sem)
-- Else_Actions (List3-Sem)
-- Is_Elsif (Flag13) (set if comes from ELSIF)
-- Do_Overflow_Check (Flag17-Sem)
-- plus fields for expression
-- Expressions here is a three-element list, whose first element is the
-- condition, the second element is the dependent expression after THEN
-- and the third element is the dependent expression after the ELSE
-- (explicitly set to True if missing).
-- Note: the Then_Actions and Else_Actions fields are always set to
-- No_List in the tree passed to Gigi. These fields are used only
-- for temporary processing purposes in the expander.
----------------------------
-- 4.5.7 Case Expression --
----------------------------
-- CASE_EXPRESSION ::=
-- case SELECTING_EXPRESSION is
-- CASE_EXPRESSION_ALTERNATIVE
-- {CASE_EXPRESSION_ALTERNATIVE}
-- Note that the Alternatives cannot include pragmas (this contrasts
-- with the situation of case statements where pragmas are allowed).
-- N_Case_Expression
-- Sloc points to CASE
-- Expression (Node3) (the selecting expression)
-- Alternatives (List4) (the case expression alternatives)
-- Do_Overflow_Check (Flag17-Sem)
----------------------------------------
-- 4.5.7 Case Expression Alternative --
----------------------------------------
-- CASE_EXPRESSION_ALTERNATIVE ::=
-- when DISCRETE_CHOICE_LIST =>
-- DEPENDENT_EXPRESSION
-- N_Case_Expression_Alternative
-- Sloc points to WHEN
-- Actions (List1)
-- Discrete_Choices (List4)
-- Expression (Node3)
-- Has_SP_Choice (Flag15-Sem)
-- Note: The Actions field temporarily holds any actions associated with
-- evaluation of the Expression. During expansion of the case expression
-- these actions are wrapped into an N_Expressions_With_Actions node
-- replacing the original expression.
-- Note: this node never appears in the tree passed to the back end,
-- since the expander converts case expressions into case statements.
---------------------------------
-- 4.5.9 Quantified Expression --
---------------------------------
-- QUANTIFIED_EXPRESSION ::=
-- for QUANTIFIER LOOP_PARAMETER_SPECIFICATION => PREDICATE
-- | for QUANTIFIER ITERATOR_SPECIFICATION => PREDICATE
--
-- QUANTIFIER ::= all | some
-- At most one of (Iterator_Specification, Loop_Parameter_Specification)
-- is present at a time, in which case the other one is empty.
-- N_Quantified_Expression
-- Sloc points to FOR
-- Iterator_Specification (Node2)
-- Loop_Parameter_Specification (Node4)
-- Condition (Node1)
-- All_Present (Flag15)
--------------------------
-- 4.6 Type Conversion --
--------------------------
-- TYPE_CONVERSION ::=
-- SUBTYPE_MARK (EXPRESSION) | SUBTYPE_MARK (NAME)
-- In the (NAME) case, the name is stored as the expression
-- Note: the parser never generates a type conversion node, since it
-- looks like an indexed component which is generated by preference.
-- The semantic pass must correct this misidentification.
-- Gigi handles conversions that involve no change in the root type,
-- and also all conversions from integer to floating-point types.
-- Conversions from floating-point to integer are only handled in
-- the case where Float_Truncate flag set. Other conversions from
-- floating-point to integer (involving rounding) and all conversions
-- involving fixed-point types are handled by the expander.
-- Sprint syntax if Float_Truncate set: X^(Y)
-- Sprint syntax if Conversion_OK set X?(Y)
-- Sprint syntax if both flags set X?^(Y)
-- Note: If either the operand or result type is fixed-point, Gigi will
-- only see a type conversion node with Conversion_OK set. The front end
-- takes care of all handling of small's for fixed-point conversions.
-- N_Type_Conversion
-- Sloc points to first token of subtype mark
-- Subtype_Mark (Node4)
-- Expression (Node3)
-- Do_Discriminant_Check (Flag1-Sem)
-- Do_Length_Check (Flag4-Sem)
-- Float_Truncate (Flag11-Sem)
-- Do_Tag_Check (Flag13-Sem)
-- Conversion_OK (Flag14-Sem)
-- Do_Overflow_Check (Flag17-Sem)
-- Rounded_Result (Flag18-Sem)
-- plus fields for expression
-- Note: if a range check is required, then the Do_Range_Check flag
-- is set in the Expression with the check being done against the
-- target type range (after the base type conversion, if any).
-------------------------------
-- 4.7 Qualified Expression --
-------------------------------
-- QUALIFIED_EXPRESSION ::=
-- SUBTYPE_MARK ' (EXPRESSION) | SUBTYPE_MARK ' AGGREGATE
-- Note: the parentheses in the (EXPRESSION) case are deemed to enclose
-- the expression, so the Expression field of this node always points
-- to a parenthesized expression in this case (i.e. Paren_Count will
-- always be non-zero for the referenced expression if it is not an
-- aggregate).
-- N_Qualified_Expression
-- Sloc points to apostrophe
-- Subtype_Mark (Node4)
-- Expression (Node3) expression or aggregate
-- plus fields for expression
--------------------
-- 4.8 Allocator --
--------------------
-- ALLOCATOR ::=
-- new [SUBPOOL_SPECIFICATION] SUBTYPE_INDICATION
-- | new [SUBPOOL_SPECIFICATION] QUALIFIED_EXPRESSION
--
-- SUBPOOL_SPECIFICATION ::= (subpool_handle_NAME)
-- Sprint syntax (when storage pool present)
-- new xxx (storage_pool = pool)
-- or
-- new (subpool) xxx (storage_pool = pool)
-- N_Allocator
-- Sloc points to NEW
-- Expression (Node3) subtype indication or qualified expression
-- Subpool_Handle_Name (Node4) (set to Empty if not present)
-- Storage_Pool (Node1-Sem)
-- Procedure_To_Call (Node2-Sem)
-- Null_Exclusion_Present (Flag11)
-- No_Initialization (Flag13-Sem)
-- Is_Static_Coextension (Flag14-Sem)
-- Do_Storage_Check (Flag17-Sem)
-- Is_Dynamic_Coextension (Flag18-Sem)
-- plus fields for expression
-- Note: like all nodes, the N_Allocator has the Comes_From_Source flag.
-- This flag has a special function in conjunction with the restriction
-- No_Implicit_Heap_Allocations, which will be triggered if this flag
-- is not set. This means that if a source allocator is replaced with
-- a constructed allocator, the Comes_From_Source flag should be copied
-- to the newly created allocator.
---------------------------------
-- 5.1 Sequence Of Statements --
---------------------------------
-- SEQUENCE_OF_STATEMENTS ::= STATEMENT {STATEMENT}
-- Note: Although the parser will not accept a declaration as a
-- statement, the semantic analyzer may insert declarations (e.g.
-- declarations of implicit types needed for execution of other
-- statements) into a sequence of statements, so the code generator
-- should be prepared to accept a declaration where a statement is
-- expected. Note also that pragmas can appear as statements.
--------------------
-- 5.1 Statement --
--------------------
-- STATEMENT ::=
-- {LABEL} SIMPLE_STATEMENT | {LABEL} COMPOUND_STATEMENT
-- There is no explicit node in the tree for a statement. Instead, the
-- individual statement appears directly. Labels are treated as a
-- kind of statement, i.e. they are linked into a statement list at
-- the point they appear, so the labeled statement appears following
-- the label or labels in the statement list.
---------------------------
-- 5.1 Simple Statement --
---------------------------
-- SIMPLE_STATEMENT ::= NULL_STATEMENT
-- | ASSIGNMENT_STATEMENT | EXIT_STATEMENT
-- | GOTO_STATEMENT | PROCEDURE_CALL_STATEMENT
-- | SIMPLE_RETURN_STATEMENT | ENTRY_CALL_STATEMENT
-- | REQUEUE_STATEMENT | DELAY_STATEMENT
-- | ABORT_STATEMENT | RAISE_STATEMENT
-- | CODE_STATEMENT
-----------------------------
-- 5.1 Compound Statement --
-----------------------------
-- COMPOUND_STATEMENT ::=
-- IF_STATEMENT | CASE_STATEMENT
-- | LOOP_STATEMENT | BLOCK_STATEMENT
-- | EXTENDED_RETURN_STATEMENT
-- | ACCEPT_STATEMENT | SELECT_STATEMENT
-------------------------
-- 5.1 Null Statement --
-------------------------
-- NULL_STATEMENT ::= null;
-- N_Null_Statement
-- Sloc points to NULL
----------------
-- 5.1 Label --
----------------
-- LABEL ::= <>
-- Note that the occurrence of a label is not a defining identifier,
-- but rather a referencing occurrence. The defining occurrence is
-- in the implicit label declaration which occurs in the innermost
-- enclosing block.
-- N_Label
-- Sloc points to <<
-- Identifier (Node1) direct name of statement identifier
-- Exception_Junk (Flag8-Sem)
-- Note: Before Ada 2012, a label is always followed by a statement,
-- and this is true in the tree even in Ada 2012 mode (the parser
-- inserts a null statement marked with Comes_From_Source False).
-------------------------------
-- 5.1 Statement Identifier --
-------------------------------
-- STATEMENT_IDENTIFIER ::= DIRECT_NAME
-- The IDENTIFIER of a STATEMENT_IDENTIFIER shall be an identifier
-- (not an OPERATOR_SYMBOL)
-------------------------------
-- 5.2 Assignment Statement --
-------------------------------
-- ASSIGNMENT_STATEMENT ::=
-- variable_NAME := EXPRESSION;
-- N_Assignment_Statement
-- Sloc points to :=
-- Name (Node2)
-- Expression (Node3)
-- Do_Discriminant_Check (Flag1-Sem)
-- Do_Tag_Check (Flag13-Sem)
-- Do_Length_Check (Flag4-Sem)
-- Forwards_OK (Flag5-Sem)
-- Backwards_OK (Flag6-Sem)
-- No_Ctrl_Actions (Flag7-Sem)
-- Componentwise_Assignment (Flag14-Sem)
-- Suppress_Assignment_Checks (Flag18-Sem)
-- Note: if a range check is required, then the Do_Range_Check flag
-- is set in the Expression (right hand side), with the check being
-- done against the type of the Name (left hand side).
-- Note: the back end places some restrictions on the form of the
-- Expression field. If the object being assigned to is Atomic, then
-- the Expression may not have the form of an aggregate (since this
-- might cause the back end to generate separate assignments). In this
-- case the front end must generate an extra temporary and initialize
-- this temporary as required (the temporary itself is not atomic).
-----------------------
-- 5.3 If Statement --
-----------------------
-- IF_STATEMENT ::=
-- if CONDITION then
-- SEQUENCE_OF_STATEMENTS
-- {elsif CONDITION then
-- SEQUENCE_OF_STATEMENTS}
-- [else
-- SEQUENCE_OF_STATEMENTS]
-- end if;
-- Gigi restriction: This expander ensures that the type of the
-- Condition fields is always Standard.Boolean, even if the type
-- in the source is some non-standard boolean type.
-- N_If_Statement
-- Sloc points to IF
-- Condition (Node1)
-- Then_Statements (List2)
-- Elsif_Parts (List3) (set to No_List if none present)
-- Else_Statements (List4) (set to No_List if no else part present)
-- End_Span (Uint5) (set to Uint_0 if expander generated)
-- N_Elsif_Part
-- Sloc points to ELSIF
-- Condition (Node1)
-- Then_Statements (List2)
-- Condition_Actions (List3-Sem)
--------------------
-- 5.3 Condition --
--------------------
-- CONDITION ::= boolean_EXPRESSION
-------------------------
-- 5.4 Case Statement --
-------------------------
-- CASE_STATEMENT ::=
-- case EXPRESSION is
-- CASE_STATEMENT_ALTERNATIVE
-- {CASE_STATEMENT_ALTERNATIVE}
-- end case;
-- Note: the Alternatives can contain pragmas. These only occur at
-- the start of the list, since any pragmas occurring after the first
-- alternative are absorbed into the corresponding statement sequence.
-- N_Case_Statement
-- Sloc points to CASE
-- Expression (Node3)
-- Alternatives (List4)
-- End_Span (Uint5) (set to Uint_0 if expander generated)
-- Note: Before Ada 2012, a pragma in a statement sequence is always
-- followed by a statement, and this is true in the tree even in Ada
-- 2012 mode (the parser inserts a null statement marked with the flag
-- Comes_From_Source False).
-------------------------------------
-- 5.4 Case Statement Alternative --
-------------------------------------
-- CASE_STATEMENT_ALTERNATIVE ::=
-- when DISCRETE_CHOICE_LIST =>
-- SEQUENCE_OF_STATEMENTS
-- N_Case_Statement_Alternative
-- Sloc points to WHEN
-- Discrete_Choices (List4)
-- Statements (List3)
-- Has_SP_Choice (Flag15-Sem)
-- Note: in the list of Discrete_Choices, the tree passed to the back
-- end does not have choice entries corresponding to names of statically
-- predicated subtypes. Such entries are always expanded out to the list
-- of equivalent values or ranges. The ASIS tree generated in -gnatct
-- mode does not have this expansion, and has the original choices.
-------------------------
-- 5.5 Loop Statement --
-------------------------
-- LOOP_STATEMENT ::=
-- [loop_STATEMENT_IDENTIFIER :]
-- [ITERATION_SCHEME] loop
-- SEQUENCE_OF_STATEMENTS
-- end loop [loop_IDENTIFIER];
-- Note: The occurrence of a loop label is not a defining identifier
-- but rather a referencing occurrence. The defining occurrence is in
-- the implicit label declaration which occurs in the innermost
-- enclosing block.
-- Note: there is always a loop statement identifier present in
-- the tree, even if none was given in the source. In the case where
-- no loop identifier is given in the source, the parser creates
-- a name of the form _Loop_n, where n is a decimal integer (the
-- two underlines ensure that the loop names created in this manner
-- do not conflict with any user defined identifiers), and the flag
-- Has_Created_Identifier is set to True. The only exception to the
-- rule that all loop statement nodes have identifiers occurs for
-- loops constructed by the expander, and the semantic analyzer will
-- create and supply dummy loop identifiers in these cases.
-- N_Loop_Statement
-- Sloc points to LOOP
-- Identifier (Node1) loop identifier (set to Empty if no identifier)
-- Iteration_Scheme (Node2) (set to Empty if no iteration scheme)
-- Statements (List3)
-- End_Label (Node4)
-- Has_Created_Identifier (Flag15)
-- Is_Null_Loop (Flag16)
-- Suppress_Loop_Warnings (Flag17)
-- Note: the parser fills in the Identifier field if there is an
-- explicit loop identifier. Otherwise the parser leaves this field
-- set to Empty, and then the semantic processing for a loop statement
-- creates an identifier, setting the Has_Created_Identifier flag to
-- True. So after semantic analysis, the Identifier is always set,
-- referencing an identifier whose entity has an Ekind of E_Loop.
---------------------------
-- 5.5 Iteration Scheme --
---------------------------
-- ITERATION_SCHEME ::=
-- while CONDITION
-- | for LOOP_PARAMETER_SPECIFICATION
-- | for ITERATOR_SPECIFICATION
-- At most one of (Iterator_Specification, Loop_Parameter_Specification)
-- is present at a time, in which case the other one is empty. Both are
-- empty in the case of a WHILE loop.
-- Gigi restriction: This expander ensures that the type of the
-- Condition field is always Standard.Boolean, even if the type
-- in the source is some non-standard boolean type.
-- N_Iteration_Scheme
-- Sloc points to WHILE or FOR
-- Condition (Node1) (set to Empty if FOR case)
-- Condition_Actions (List3-Sem)
-- Iterator_Specification (Node2) (set to Empty if WHILE case)
-- Loop_Parameter_Specification (Node4) (set to Empty if WHILE case)
---------------------------------------
-- 5.5 Loop Parameter Specification --
---------------------------------------
-- LOOP_PARAMETER_SPECIFICATION ::=
-- DEFINING_IDENTIFIER in [reverse] DISCRETE_SUBTYPE_DEFINITION
-- N_Loop_Parameter_Specification
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Reverse_Present (Flag15)
-- Discrete_Subtype_Definition (Node4)
-----------------------------------
-- 5.5.1 Iterator Specification --
-----------------------------------
-- ITERATOR_SPECIFICATION ::=
-- DEFINING_IDENTIFIER in [reverse] NAME
-- | DEFINING_IDENTIFIER [: SUBTYPE_INDICATION] of [reverse] NAME
-- N_Iterator_Specification
-- Sloc points to defining identifier
-- Defining_Identifier (Node1)
-- Name (Node2)
-- Reverse_Present (Flag15)
-- Of_Present (Flag16)
-- Subtype_Indication (Node5)
-- Note: The Of_Present flag distinguishes the two forms
--------------------------
-- 5.6 Block Statement --
--------------------------
-- BLOCK_STATEMENT ::=
-- [block_STATEMENT_IDENTIFIER:]
-- [declare
-- DECLARATIVE_PART]
-- begin
-- HANDLED_SEQUENCE_OF_STATEMENTS
-- end [block_IDENTIFIER];
-- Note that the occurrence of a block identifier is not a defining
-- identifier, but rather a referencing occurrence. The defining
-- occurrence is an E_Block entity declared by the implicit label
-- declaration which occurs in the innermost enclosing block statement
-- or body; the block identifier denotes that E_Block.
-- For block statements that come from source code, there is always a
-- block statement identifier present in the tree, denoting an
-- E_Block. In the case where no block identifier is given in the
-- source, the parser creates a name of the form B_n, where n is a
-- decimal integer, and the flag Has_Created_Identifier is set to
-- True. Blocks constructed by the expander usually have no identifier,
-- and no corresponding entity.
-- Note: the block statement created for an extended return statement
-- has an entity, and this entity is an E_Return_Statement, rather than
-- the usual E_Block.
-- Note: Exception_Junk is set for the wrapping blocks created during
-- local raise optimization (Exp_Ch11.Expand_Local_Exception_Handlers).
-- Note: from a control flow viewpoint, a block statement defines an
-- extended basic block, i.e. the entry of the block dominates every
-- statement in the sequence. When generating new statements with
-- exception handlers in the expander at the end of a sequence that
-- comes from source code, it can be necessary to wrap them all in a
-- block statement in order to expose the implicit control flow to
-- gigi and thus prevent it from issuing bogus control flow warnings.
-- N_Block_Statement
-- Sloc points to DECLARE or BEGIN
-- Identifier (Node1) block direct name (set to Empty if not present)
-- Declarations (List2) (set to No_List if no DECLARE part)
-- Handled_Statement_Sequence (Node4)
-- Is_Task_Master (Flag5-Sem)
-- Activation_Chain_Entity (Node3-Sem)
-- Has_Created_Identifier (Flag15)
-- Is_Task_Allocation_Block (Flag6)
-- Is_Asynchronous_Call_Block (Flag7)
-- Exception_Junk (Flag8-Sem)
-- Is_Finalization_Wrapper (Flag9-Sem)
-------------------------
-- 5.7 Exit Statement --
-------------------------
-- EXIT_STATEMENT ::= exit [loop_NAME] [when CONDITION];
-- Gigi restriction: This expander ensures that the type of the
-- Condition field is always Standard.Boolean, even if the type
-- in the source is some non-standard boolean type.
-- N_Exit_Statement
-- Sloc points to EXIT
-- Name (Node2) (set to Empty if no loop name present)
-- Condition (Node1) (set to Empty if no WHEN part present)
-- Next_Exit_Statement (Node3-Sem): Next exit on chain
-------------------------
-- 5.9 Goto Statement --
-------------------------
-- GOTO_STATEMENT ::= goto label_NAME;
-- N_Goto_Statement
-- Sloc points to GOTO
-- Name (Node2)
-- Exception_Junk (Flag8-Sem)
---------------------------------
-- 6.1 Subprogram Declaration --
---------------------------------
-- SUBPROGRAM_DECLARATION ::=
-- SUBPROGRAM_SPECIFICATION
-- [ASPECT_SPECIFICATIONS];
-- N_Subprogram_Declaration
-- Sloc points to FUNCTION or PROCEDURE
-- Specification (Node1)
-- Body_To_Inline (Node3-Sem)
-- Corresponding_Body (Node5-Sem)
-- Parent_Spec (Node4-Sem)
------------------------------------------
-- 6.1 Abstract Subprogram Declaration --
------------------------------------------
-- ABSTRACT_SUBPROGRAM_DECLARATION ::=
-- SUBPROGRAM_SPECIFICATION is abstract
-- [ASPECT_SPECIFICATIONS];
-- N_Abstract_Subprogram_Declaration
-- Sloc points to ABSTRACT
-- Specification (Node1)
-----------------------------------
-- 6.1 Subprogram Specification --
-----------------------------------
-- SUBPROGRAM_SPECIFICATION ::=
-- [[not] overriding]
-- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
-- | [[not] overriding]
-- function DEFINING_DESIGNATOR PARAMETER_AND_RESULT_PROFILE
-- Note: there are no separate nodes for the profiles, instead the
-- information appears directly in the following nodes.
-- N_Function_Specification
-- Sloc points to FUNCTION
-- Defining_Unit_Name (Node1) (the designator)
-- Elaboration_Boolean (Node2-Sem)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-- Null_Exclusion_Present (Flag11)
-- Result_Definition (Node4) for result subtype
-- Generic_Parent (Node5-Sem)
-- Must_Override (Flag14) set if overriding indicator present
-- Must_Not_Override (Flag15) set if not_overriding indicator present
-- N_Procedure_Specification
-- Sloc points to PROCEDURE
-- Defining_Unit_Name (Node1)
-- Elaboration_Boolean (Node2-Sem)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-- Generic_Parent (Node5-Sem)
-- Null_Present (Flag13) set for null procedure case (Ada 2005 feature)
-- Must_Override (Flag14) set if overriding indicator present
-- Must_Not_Override (Flag15) set if not_overriding indicator present
-- Note: overriding indicator is an Ada 2005 feature
---------------------
-- 6.1 Designator --
---------------------
-- DESIGNATOR ::=
-- [PARENT_UNIT_NAME .] IDENTIFIER | OPERATOR_SYMBOL
-- Designators that are simply identifiers or operator symbols appear
-- directly in the tree in this form. The following node is used only
-- in the case where the designator has a parent unit name component.
-- N_Designator
-- Sloc points to period
-- Name (Node2) holds the parent unit name. Note that this is always
-- non-Empty, since this node is only used for the case where a
-- parent library unit package name is present.
-- Identifier (Node1)
-- Note that the identifier can also be an operator symbol here
------------------------------
-- 6.1 Defining Designator --
------------------------------
-- DEFINING_DESIGNATOR ::=
-- DEFINING_PROGRAM_UNIT_NAME | DEFINING_OPERATOR_SYMBOL
-------------------------------------
-- 6.1 Defining Program Unit Name --
-------------------------------------
-- DEFINING_PROGRAM_UNIT_NAME ::=
-- [PARENT_UNIT_NAME .] DEFINING_IDENTIFIER
-- The parent unit name is present only in the case of a child unit
-- name (permissible only for Ada 95 for a library level unit, i.e.
-- a unit at scope level one). If no such name is present, the defining
-- program unit name is represented simply as the defining identifier.
-- In the child unit case, the following node is used to represent the
-- child unit name.
-- N_Defining_Program_Unit_Name
-- Sloc points to period
-- Name (Node2) holds the parent unit name. Note that this is always
-- non-Empty, since this node is only used for the case where a
-- parent unit name is present.
-- Defining_Identifier (Node1)
--------------------------
-- 6.1 Operator Symbol --
--------------------------
-- OPERATOR_SYMBOL ::= STRING_LITERAL
-- Note: the fields of the N_Operator_Symbol node are laid out to
-- match the corresponding fields of an N_Character_Literal node. This
-- allows easy conversion of the operator symbol node into a character
-- literal node in the case where a string constant of the form of an
-- operator symbol is scanned out as such, but turns out semantically
-- to be a string literal that is not an operator. For details see
-- Sinfo.CN.Change_Operator_Symbol_To_String_Literal.
-- N_Operator_Symbol
-- Sloc points to literal
-- Chars (Name1) contains the Name_Id for the operator symbol
-- Strval (Str3) Id of string value. This is used if the operator
-- symbol turns out to be a normal string after all.
-- Entity (Node4-Sem)
-- Associated_Node (Node4-Sem)
-- Has_Private_View (Flag11-Sem) set in generic units.
-- Etype (Node5-Sem)
-- Note: the Strval field may be set to No_String for generated
-- operator symbols that are known not to be string literals
-- semantically.
-----------------------------------
-- 6.1 Defining Operator Symbol --
-----------------------------------
-- DEFINING_OPERATOR_SYMBOL ::= OPERATOR_SYMBOL
-- A defining operator symbol is an entity, which has additional
-- fields depending on the setting of the Ekind field. These
-- additional fields are defined (and access subprograms declared)
-- in package Einfo.
-- Note: N_Defining_Operator_Symbol is an extended node whose fields
-- are deliberately layed out to match the layout of fields in an
-- ordinary N_Operator_Symbol node allowing for easy alteration of
-- an operator symbol node into a defining operator symbol node.
-- See Sinfo.CN.Change_Operator_Symbol_To_Defining_Operator_Symbol
-- for further details.
-- N_Defining_Operator_Symbol
-- Sloc points to literal
-- Chars (Name1) contains the Name_Id for the operator symbol
-- Next_Entity (Node2-Sem)
-- Scope (Node3-Sem)
-- Etype (Node5-Sem)
----------------------------
-- 6.1 Parameter Profile --
----------------------------
-- PARAMETER_PROFILE ::= [FORMAL_PART]
---------------------------------------
-- 6.1 Parameter and Result Profile --
---------------------------------------
-- PARAMETER_AND_RESULT_PROFILE ::=
-- [FORMAL_PART] return [NULL_EXCLUSION] SUBTYPE_MARK
-- | [FORMAL_PART] return ACCESS_DEFINITION
-- There is no explicit node in the tree for a parameter and result
-- profile. Instead the information appears directly in the parent.
----------------------
-- 6.1 Formal Part --
----------------------
-- FORMAL_PART ::=
-- (PARAMETER_SPECIFICATION {; PARAMETER_SPECIFICATION})
----------------------------------
-- 6.1 Parameter Specification --
----------------------------------
-- PARAMETER_SPECIFICATION ::=
-- DEFINING_IDENTIFIER_LIST : [ALIASED] MODE [NULL_EXCLUSION]
-- SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
-- | DEFINING_IDENTIFIER_LIST : ACCESS_DEFINITION
-- [:= DEFAULT_EXPRESSION]
-- Although the syntax allows multiple identifiers in the list, the
-- semantics is as though successive specifications were given with
-- identical type definition and expression components. To simplify
-- semantic processing, the parser represents a multiple declaration
-- case as a sequence of single Specifications, using the More_Ids and
-- Prev_Ids flags to preserve the original source form as described
-- in the section on "Handling of Defining Identifier Lists".
-- ALIASED can only be present in Ada 2012 mode
-- N_Parameter_Specification
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Aliased_Present (Flag4)
-- In_Present (Flag15)
-- Out_Present (Flag17)
-- Null_Exclusion_Present (Flag11)
-- Parameter_Type (Node2) subtype mark or access definition
-- Expression (Node3) (set to Empty if no default expression present)
-- Do_Accessibility_Check (Flag13-Sem)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
-- Default_Expression (Node5-Sem)
---------------
-- 6.1 Mode --
---------------
-- MODE ::= [in] | in out | out
-- There is no explicit node in the tree for the Mode. Instead the
-- In_Present and Out_Present flags are set in the parent node to
-- record the presence of keywords specifying the mode.
--------------------------
-- 6.3 Subprogram Body --
--------------------------
-- SUBPROGRAM_BODY ::=
-- SUBPROGRAM_SPECIFICATION [ASPECT_SPECIFICATIONS] is
-- DECLARATIVE_PART
-- begin
-- HANDLED_SEQUENCE_OF_STATEMENTS
-- end [DESIGNATOR];
-- N_Subprogram_Body
-- Sloc points to FUNCTION or PROCEDURE
-- Specification (Node1)
-- Declarations (List2)
-- Handled_Statement_Sequence (Node4)
-- Activation_Chain_Entity (Node3-Sem)
-- Corresponding_Spec (Node5-Sem)
-- Acts_As_Spec (Flag4-Sem)
-- Bad_Is_Detected (Flag15) used only by parser
-- Do_Storage_Check (Flag17-Sem)
-- Is_Protected_Subprogram_Body (Flag7-Sem)
-- Is_Entry_Barrier_Function (Flag8-Sem)
-- Is_Task_Master (Flag5-Sem)
-- Was_Originally_Stub (Flag13-Sem)
-- Has_Relative_Deadline_Pragma (Flag9-Sem)
-------------------------
-- Expression Function --
-------------------------
-- This is an Ada 2012 extension, we put it here for now, to be labeled
-- and put in its proper section when we know exactly where that is!
-- EXPRESSION_FUNCTION ::=
-- FUNCTION SPECIFICATION IS (EXPRESSION)
-- [ASPECT_SPECIFICATIONS];
-- N_Expression_Function
-- Sloc points to FUNCTION
-- Specification (Node1)
-- Expression (Node3)
-- Corresponding_Spec (Node5-Sem)
-----------------------------------
-- 6.4 Procedure Call Statement --
-----------------------------------
-- PROCEDURE_CALL_STATEMENT ::=
-- procedure_NAME; | procedure_PREFIX ACTUAL_PARAMETER_PART;
-- Note: the reason that a procedure call has expression fields is
-- that it semantically resembles an expression, e.g. overloading is
-- allowed and a type is concocted for semantic processing purposes.
-- Certain of these fields, such as Parens are not relevant, but it
-- is easier to just supply all of them together!
-- N_Procedure_Call_Statement
-- Sloc points to first token of name or prefix
-- Name (Node2) stores name or prefix
-- Parameter_Associations (List3) (set to No_List if no
-- actual parameter part)
-- First_Named_Actual (Node4-Sem)
-- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
-- Do_Tag_Check (Flag13-Sem)
-- No_Elaboration_Check (Flag14-Sem)
-- Parameter_List_Truncated (Flag17-Sem)
-- ABE_Is_Certain (Flag18-Sem)
-- plus fields for expression
-- If any IN parameter requires a range check, then the corresponding
-- argument expression has the Do_Range_Check flag set, and the range
-- check is done against the formal type. Note that this argument
-- expression may appear directly in the Parameter_Associations list,
-- or may be a descendent of an N_Parameter_Association node that
-- appears in this list.
------------------------
-- 6.4 Function Call --
------------------------
-- FUNCTION_CALL ::=
-- function_NAME | function_PREFIX ACTUAL_PARAMETER_PART
-- Note: the parser may generate an indexed component node or simply
-- a name node instead of a function call node. The semantic pass must
-- correct this misidentification.
-- N_Function_Call
-- Sloc points to first token of name or prefix
-- Name (Node2) stores name or prefix
-- Parameter_Associations (List3) (set to No_List if no
-- actual parameter part)
-- First_Named_Actual (Node4-Sem)
-- Controlling_Argument (Node1-Sem) (set to Empty if not dispatching)
-- In_Assertion_Expression (Flag4-Sem)
-- Is_Expanded_Build_In_Place_Call (Flag11-Sem)
-- Do_Tag_Check (Flag13-Sem)
-- No_Elaboration_Check (Flag14-Sem)
-- Parameter_List_Truncated (Flag17-Sem)
-- ABE_Is_Certain (Flag18-Sem)
-- plus fields for expression
--------------------------------
-- 6.4 Actual Parameter Part --
--------------------------------
-- ACTUAL_PARAMETER_PART ::=
-- (PARAMETER_ASSOCIATION {,PARAMETER_ASSOCIATION})
--------------------------------
-- 6.4 Parameter Association --
--------------------------------
-- PARAMETER_ASSOCIATION ::=
-- [formal_parameter_SELECTOR_NAME =>] EXPLICIT_ACTUAL_PARAMETER
-- Note: the N_Parameter_Association node is built only if a formal
-- parameter selector name is present, otherwise the parameter
-- association appears in the tree simply as the node for the
-- explicit actual parameter.
-- N_Parameter_Association
-- Sloc points to formal parameter
-- Selector_Name (Node2) (always non-Empty)
-- Explicit_Actual_Parameter (Node3)
-- Next_Named_Actual (Node4-Sem)
-- Is_Accessibility_Actual (Flag13-Sem)
---------------------------
-- 6.4 Actual Parameter --
---------------------------
-- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
---------------------------
-- 6.5 Return Statement --
---------------------------
-- SIMPLE_RETURN_STATEMENT ::= return [EXPRESSION];
-- EXTENDED_RETURN_STATEMENT ::=
-- return DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
-- [:= EXPRESSION] [do
-- HANDLED_SEQUENCE_OF_STATEMENTS
-- end return];
-- RETURN_SUBTYPE_INDICATION ::= SUBTYPE_INDICATION | ACCESS_DEFINITION
-- The term "return statement" is defined in 6.5 to mean either a
-- SIMPLE_RETURN_STATEMENT or an EXTENDED_RETURN_STATEMENT. We avoid
-- the use of this term, since it used to mean someting else in earlier
-- versions of Ada.
-- N_Simple_Return_Statement
-- Sloc points to RETURN
-- Return_Statement_Entity (Node5-Sem)
-- Expression (Node3) (set to Empty if no expression present)
-- Storage_Pool (Node1-Sem)
-- Procedure_To_Call (Node2-Sem)
-- Do_Tag_Check (Flag13-Sem)
-- By_Ref (Flag5-Sem)
-- Comes_From_Extended_Return_Statement (Flag18-Sem)
-- Note: Return_Statement_Entity points to an E_Return_Statement
-- If a range check is required, then Do_Range_Check is set on the
-- Expression. The check is against the return subtype of the function.
-- N_Extended_Return_Statement
-- Sloc points to RETURN
-- Return_Statement_Entity (Node5-Sem)
-- Return_Object_Declarations (List3)
-- Handled_Statement_Sequence (Node4) (set to Empty if not present)
-- Storage_Pool (Node1-Sem)
-- Procedure_To_Call (Node2-Sem)
-- Do_Tag_Check (Flag13-Sem)
-- By_Ref (Flag5-Sem)
-- Note: Return_Statement_Entity points to an E_Return_Statement.
-- Note that Return_Object_Declarations is a list containing the
-- N_Object_Declaration -- see comment on this field above.
-- The declared object will have Is_Return_Object = True.
-- There is no such syntactic category as return_object_declaration
-- in the RM. Return_Object_Declarations represents this portion of
-- the syntax for EXTENDED_RETURN_STATEMENT:
-- DEFINING_IDENTIFIER : [aliased] RETURN_SUBTYPE_INDICATION
-- [:= EXPRESSION]
-- There are two entities associated with an extended_return_statement:
-- the Return_Statement_Entity represents the statement itself, and the
-- Defining_Identifier of the Object_Declaration in
-- Return_Object_Declarations represents the object being
-- returned. N_Simple_Return_Statement has only the former.
------------------------------
-- 7.1 Package Declaration --
------------------------------
-- PACKAGE_DECLARATION ::=
-- PACKAGE_SPECIFICATION;
-- Note: the activation chain entity for a package spec is used for
-- all tasks declared in the package spec, or in the package body.
-- N_Package_Declaration
-- Sloc points to PACKAGE
-- Specification (Node1)
-- Corresponding_Body (Node5-Sem)
-- Parent_Spec (Node4-Sem)
-- Activation_Chain_Entity (Node3-Sem)
--------------------------------
-- 7.1 Package Specification --
--------------------------------
-- PACKAGE_SPECIFICATION ::=
-- package DEFINING_PROGRAM_UNIT_NAME
-- [ASPECT_SPECIFICATIONS]
-- is
-- {BASIC_DECLARATIVE_ITEM}
-- [private
-- {BASIC_DECLARATIVE_ITEM}]
-- end [[PARENT_UNIT_NAME .] IDENTIFIER]
-- N_Package_Specification
-- Sloc points to PACKAGE
-- Defining_Unit_Name (Node1)
-- Visible_Declarations (List2)
-- Private_Declarations (List3) (set to No_List if no private
-- part present)
-- End_Label (Node4)
-- Generic_Parent (Node5-Sem)
-- Limited_View_Installed (Flag18-Sem)
-----------------------
-- 7.1 Package Body --
-----------------------
-- PACKAGE_BODY ::=
-- package body DEFINING_PROGRAM_UNIT_NAME
-- [ASPECT_SPECIFICATIONS]
-- is
-- DECLARATIVE_PART
-- [begin
-- HANDLED_SEQUENCE_OF_STATEMENTS]
-- end [[PARENT_UNIT_NAME .] IDENTIFIER];
-- N_Package_Body
-- Sloc points to PACKAGE
-- Defining_Unit_Name (Node1)
-- Declarations (List2)
-- Handled_Statement_Sequence (Node4) (set to Empty if no HSS present)
-- Corresponding_Spec (Node5-Sem)
-- Was_Originally_Stub (Flag13-Sem)
-- Note: if a source level package does not contain a handled sequence
-- of statements, then the parser supplies a dummy one with a null
-- sequence of statements. Comes_From_Source will be False in this
-- constructed sequence. The reason we need this is for the End_Label
-- field in the HSS.
-----------------------------------
-- 7.4 Private Type Declaration --
-----------------------------------
-- PRIVATE_TYPE_DECLARATION ::=
-- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
-- is [[abstract] tagged] [limited] private
-- [ASPECT_SPECIFICATIONS];
-- Note: TAGGED is not permitted in Ada 83 mode
-- N_Private_Type_Declaration
-- Sloc points to TYPE
-- Defining_Identifier (Node1)
-- Discriminant_Specifications (List4) (set to No_List if no
-- discriminant part)
-- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
-- Abstract_Present (Flag4)
-- Tagged_Present (Flag15)
-- Limited_Present (Flag17)
----------------------------------------
-- 7.4 Private Extension Declaration --
----------------------------------------
-- PRIVATE_EXTENSION_DECLARATION ::=
-- type DEFINING_IDENTIFIER [DISCRIMINANT_PART] is
-- [abstract] [limited | synchronized]
-- new ancestor_SUBTYPE_INDICATION [and INTERFACE_LIST]
-- with private [ASPECT_SPECIFICATIONS];
-- Note: LIMITED, and private extension declarations are not allowed
-- in Ada 83 mode.
-- N_Private_Extension_Declaration
-- Sloc points to TYPE
-- Defining_Identifier (Node1)
-- Discriminant_Specifications (List4) (set to No_List if no
-- discriminant part)
-- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
-- Abstract_Present (Flag4)
-- Limited_Present (Flag17)
-- Synchronized_Present (Flag7)
-- Subtype_Indication (Node5)
-- Interface_List (List2) (set to No_List if none)
---------------------
-- 8.4 Use Clause --
---------------------
-- USE_CLAUSE ::= USE_PACKAGE_CLAUSE | USE_TYPE_CLAUSE
-----------------------------
-- 8.4 Use Package Clause --
-----------------------------
-- USE_PACKAGE_CLAUSE ::= use package_NAME {, package_NAME};
-- N_Use_Package_Clause
-- Sloc points to USE
-- Names (List2)
-- Next_Use_Clause (Node3-Sem)
-- Hidden_By_Use_Clause (Elist4-Sem)
--------------------------
-- 8.4 Use Type Clause --
--------------------------
-- USE_TYPE_CLAUSE ::= use [ALL] type SUBTYPE_MARK {, SUBTYPE_MARK};
-- Note: use type clause is not permitted in Ada 83 mode
-- Note: the ALL keyword can appear only in Ada 2012 mode
-- N_Use_Type_Clause
-- Sloc points to USE
-- Subtype_Marks (List2)
-- Next_Use_Clause (Node3-Sem)
-- Hidden_By_Use_Clause (Elist4-Sem)
-- Used_Operations (Elist5-Sem)
-- All_Present (Flag15)
-------------------------------
-- 8.5 Renaming Declaration --
-------------------------------
-- RENAMING_DECLARATION ::=
-- OBJECT_RENAMING_DECLARATION
-- | EXCEPTION_RENAMING_DECLARATION
-- | PACKAGE_RENAMING_DECLARATION
-- | SUBPROGRAM_RENAMING_DECLARATION
-- | GENERIC_RENAMING_DECLARATION
--------------------------------------
-- 8.5 Object Renaming Declaration --
--------------------------------------
-- OBJECT_RENAMING_DECLARATION ::=
-- DEFINING_IDENTIFIER :
-- [NULL_EXCLUSION] SUBTYPE_MARK renames object_NAME
-- [ASPECT_SPECIFICATIONS];
-- | DEFINING_IDENTIFIER :
-- ACCESS_DEFINITION renames object_NAME
-- [ASPECT_SPECIFICATIONS];
-- Note: Access_Definition is an optional field that gives support to
-- Ada 2005 (AI-230). The parser generates nodes that have either the
-- Subtype_Indication field or else the Access_Definition field.
-- N_Object_Renaming_Declaration
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Null_Exclusion_Present (Flag11) (set to False if not present)
-- Subtype_Mark (Node4) (set to Empty if not present)
-- Access_Definition (Node3) (set to Empty if not present)
-- Name (Node2)
-- Corresponding_Generic_Association (Node5-Sem)
-----------------------------------------
-- 8.5 Exception Renaming Declaration --
-----------------------------------------
-- EXCEPTION_RENAMING_DECLARATION ::=
-- DEFINING_IDENTIFIER : exception renames exception_NAME
-- [ASPECT_SPECIFICATIONS];
-- N_Exception_Renaming_Declaration
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- Name (Node2)
---------------------------------------
-- 8.5 Package Renaming Declaration --
---------------------------------------
-- PACKAGE_RENAMING_DECLARATION ::=
-- package DEFINING_PROGRAM_UNIT_NAME renames package_NAME
-- [ASPECT_SPECIFICATIONS];
-- N_Package_Renaming_Declaration
-- Sloc points to PACKAGE
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Parent_Spec (Node4-Sem)
------------------------------------------
-- 8.5 Subprogram Renaming Declaration --
------------------------------------------
-- SUBPROGRAM_RENAMING_DECLARATION ::=
-- SUBPROGRAM_SPECIFICATION renames callable_entity_NAME
-- [ASPECT_SPECIFICATIONS];
-- N_Subprogram_Renaming_Declaration
-- Sloc points to RENAMES
-- Specification (Node1)
-- Name (Node2)
-- Parent_Spec (Node4-Sem)
-- Corresponding_Spec (Node5-Sem)
-- Corresponding_Formal_Spec (Node3-Sem)
-- From_Default (Flag6-Sem)
-----------------------------------------
-- 8.5.5 Generic Renaming Declaration --
-----------------------------------------
-- GENERIC_RENAMING_DECLARATION ::=
-- generic package DEFINING_PROGRAM_UNIT_NAME
-- renames generic_package_NAME
-- [ASPECT_SPECIFICATIONS];
-- | generic procedure DEFINING_PROGRAM_UNIT_NAME
-- renames generic_procedure_NAME
-- [ASPECT_SPECIFICATIONS];
-- | generic function DEFINING_PROGRAM_UNIT_NAME
-- renames generic_function_NAME
-- [ASPECT_SPECIFICATIONS];
-- N_Generic_Package_Renaming_Declaration
-- Sloc points to GENERIC
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Parent_Spec (Node4-Sem)
-- N_Generic_Procedure_Renaming_Declaration
-- Sloc points to GENERIC
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Parent_Spec (Node4-Sem)
-- N_Generic_Function_Renaming_Declaration
-- Sloc points to GENERIC
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Parent_Spec (Node4-Sem)
--------------------------------
-- 9.1 Task Type Declaration --
--------------------------------
-- TASK_TYPE_DECLARATION ::=
-- task type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
-- [ASPECT_SPECIFICATIONS]
-- [is [new INTERFACE_LIST with] TASK_DEFINITION];
-- N_Task_Type_Declaration
-- Sloc points to TASK
-- Defining_Identifier (Node1)
-- Discriminant_Specifications (List4) (set to No_List if no
-- discriminant part)
-- Interface_List (List2) (set to No_List if none)
-- Task_Definition (Node3) (set to Empty if not present)
-- Corresponding_Body (Node5-Sem)
----------------------------------
-- 9.1 Single Task Declaration --
----------------------------------
-- SINGLE_TASK_DECLARATION ::=
-- task DEFINING_IDENTIFIER
-- [ASPECT_SPECIFICATIONS]
-- [is [new INTERFACE_LIST with] TASK_DEFINITION];
-- N_Single_Task_Declaration
-- Sloc points to TASK
-- Defining_Identifier (Node1)
-- Interface_List (List2) (set to No_List if none)
-- Task_Definition (Node3) (set to Empty if not present)
--------------------------
-- 9.1 Task Definition --
--------------------------
-- TASK_DEFINITION ::=
-- {TASK_ITEM}
-- [private
-- {TASK_ITEM}]
-- end [task_IDENTIFIER]
-- Note: as a result of semantic analysis, the list of task items can
-- include implicit type declarations resulting from entry families.
-- N_Task_Definition
-- Sloc points to first token of task definition
-- Visible_Declarations (List2)
-- Private_Declarations (List3) (set to No_List if no private part)
-- End_Label (Node4)
-- Has_Storage_Size_Pragma (Flag5-Sem)
-- Has_Relative_Deadline_Pragma (Flag9-Sem)
--------------------
-- 9.1 Task Item --
--------------------
-- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
--------------------
-- 9.1 Task Body --
--------------------
-- TASK_BODY ::=
-- task body task_DEFINING_IDENTIFIER
-- [ASPECT_SPECIFICATIONS]
-- is
-- DECLARATIVE_PART
-- begin
-- HANDLED_SEQUENCE_OF_STATEMENTS
-- end [task_IDENTIFIER];
-- Gigi restriction: This node never appears
-- N_Task_Body
-- Sloc points to TASK
-- Defining_Identifier (Node1)
-- Declarations (List2)
-- Handled_Statement_Sequence (Node4)
-- Is_Task_Master (Flag5-Sem)
-- Activation_Chain_Entity (Node3-Sem)
-- Corresponding_Spec (Node5-Sem)
-- Was_Originally_Stub (Flag13-Sem)
-------------------------------------
-- 9.4 Protected Type Declaration --
-------------------------------------
-- PROTECTED_TYPE_DECLARATION ::=
-- protected type DEFINING_IDENTIFIER [KNOWN_DISCRIMINANT_PART]
-- [ASPECT_SPECIFICATIONS]
-- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
-- Note: protected type declarations are not permitted in Ada 83 mode
-- N_Protected_Type_Declaration
-- Sloc points to PROTECTED
-- Defining_Identifier (Node1)
-- Discriminant_Specifications (List4) (set to No_List if no
-- discriminant part)
-- Interface_List (List2) (set to No_List if none)
-- Protected_Definition (Node3)
-- Corresponding_Body (Node5-Sem)
---------------------------------------
-- 9.4 Single Protected Declaration --
---------------------------------------
-- SINGLE_PROTECTED_DECLARATION ::=
-- protected DEFINING_IDENTIFIER
-- [ASPECT_SPECIFICATIONS]
-- is [new INTERFACE_LIST with] PROTECTED_DEFINITION;
-- Note: single protected declarations are not allowed in Ada 83 mode
-- N_Single_Protected_Declaration
-- Sloc points to PROTECTED
-- Defining_Identifier (Node1)
-- Interface_List (List2) (set to No_List if none)
-- Protected_Definition (Node3)
-------------------------------
-- 9.4 Protected Definition --
-------------------------------
-- PROTECTED_DEFINITION ::=
-- {PROTECTED_OPERATION_DECLARATION}
-- [private
-- {PROTECTED_ELEMENT_DECLARATION}]
-- end [protected_IDENTIFIER]
-- N_Protected_Definition
-- Sloc points to first token of protected definition
-- Visible_Declarations (List2)
-- Private_Declarations (List3) (set to No_List if no private part)
-- End_Label (Node4)
------------------------------------------
-- 9.4 Protected Operation Declaration --
------------------------------------------
-- PROTECTED_OPERATION_DECLARATION ::=
-- SUBPROGRAM_DECLARATION
-- | ENTRY_DECLARATION
-- | REPRESENTATION_CLAUSE
----------------------------------------
-- 9.4 Protected Element Declaration --
----------------------------------------
-- PROTECTED_ELEMENT_DECLARATION ::=
-- PROTECTED_OPERATION_DECLARATION | COMPONENT_DECLARATION
-------------------------
-- 9.4 Protected Body --
-------------------------
-- PROTECTED_BODY ::=
-- protected body DEFINING_IDENTIFIER
-- [ASPECT_SPECIFICATIONS];
-- is
-- {PROTECTED_OPERATION_ITEM}
-- end [protected_IDENTIFIER];
-- Note: protected bodies are not allowed in Ada 83 mode
-- Gigi restriction: This node never appears
-- N_Protected_Body
-- Sloc points to PROTECTED
-- Defining_Identifier (Node1)
-- Declarations (List2) protected operation items (and pragmas)
-- End_Label (Node4)
-- Corresponding_Spec (Node5-Sem)
-- Was_Originally_Stub (Flag13-Sem)
-----------------------------------
-- 9.4 Protected Operation Item --
-----------------------------------
-- PROTECTED_OPERATION_ITEM ::=
-- SUBPROGRAM_DECLARATION
-- | SUBPROGRAM_BODY
-- | ENTRY_BODY
-- | REPRESENTATION_CLAUSE
------------------------------
-- 9.5.2 Entry Declaration --
------------------------------
-- ENTRY_DECLARATION ::=
-- [[not] overriding]
-- entry DEFINING_IDENTIFIER
-- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE
-- [ASPECT_SPECIFICATIONS];
-- N_Entry_Declaration
-- Sloc points to ENTRY
-- Defining_Identifier (Node1)
-- Discrete_Subtype_Definition (Node4) (set to Empty if not present)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-- Corresponding_Body (Node5-Sem)
-- Must_Override (Flag14) set if overriding indicator present
-- Must_Not_Override (Flag15) set if not_overriding indicator present
-- Note: overriding indicator is an Ada 2005 feature
-----------------------------
-- 9.5.2 Accept statement --
-----------------------------
-- ACCEPT_STATEMENT ::=
-- accept entry_DIRECT_NAME
-- [(ENTRY_INDEX)] PARAMETER_PROFILE [do
-- HANDLED_SEQUENCE_OF_STATEMENTS
-- end [entry_IDENTIFIER]];
-- Gigi restriction: This node never appears
-- Note: there are no explicit declarations allowed in an accept
-- statement. However, the implicit declarations for any statement
-- identifiers (labels and block/loop identifiers) are declarations
-- that belong logically to the accept statement, and that is why
-- there is a Declarations field in this node.
-- N_Accept_Statement
-- Sloc points to ACCEPT
-- Entry_Direct_Name (Node1)
-- Entry_Index (Node5) (set to Empty if not present)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-- Handled_Statement_Sequence (Node4)
-- Declarations (List2) (set to No_List if no declarations)
------------------------
-- 9.5.2 Entry Index --
------------------------
-- ENTRY_INDEX ::= EXPRESSION
-----------------------
-- 9.5.2 Entry Body --
-----------------------
-- ENTRY_BODY ::=
-- entry DEFINING_IDENTIFIER ENTRY_BODY_FORMAL_PART ENTRY_BARRIER is
-- DECLARATIVE_PART
-- begin
-- HANDLED_SEQUENCE_OF_STATEMENTS
-- end [entry_IDENTIFIER];
-- ENTRY_BARRIER ::= when CONDITION
-- Note: we store the CONDITION of the ENTRY_BARRIER in the node for
-- the ENTRY_BODY_FORMAL_PART to avoid the N_Entry_Body node getting
-- too full (it would otherwise have too many fields)
-- Gigi restriction: This node never appears
-- N_Entry_Body
-- Sloc points to ENTRY
-- Defining_Identifier (Node1)
-- Entry_Body_Formal_Part (Node5)
-- Declarations (List2)
-- Handled_Statement_Sequence (Node4)
-- Activation_Chain_Entity (Node3-Sem)
-----------------------------------
-- 9.5.2 Entry Body Formal Part --
-----------------------------------
-- ENTRY_BODY_FORMAL_PART ::=
-- [(ENTRY_INDEX_SPECIFICATION)] PARAMETER_PROFILE
-- Note that an entry body formal part node is present even if it is
-- empty. This reflects the grammar, in which it is the components of
-- the entry body formal part that are optional, not the entry body
-- formal part itself. Also this means that the barrier condition
-- always has somewhere to be stored.
-- Gigi restriction: This node never appears
-- N_Entry_Body_Formal_Part
-- Sloc points to first token
-- Entry_Index_Specification (Node4) (set to Empty if not present)
-- Parameter_Specifications (List3) (set to No_List if no formal part)
-- Condition (Node1) from entry barrier of entry body
--------------------------
-- 9.5.2 Entry Barrier --
--------------------------
-- ENTRY_BARRIER ::= when CONDITION
--------------------------------------
-- 9.5.2 Entry Index Specification --
--------------------------------------
-- ENTRY_INDEX_SPECIFICATION ::=
-- for DEFINING_IDENTIFIER in DISCRETE_SUBTYPE_DEFINITION
-- Gigi restriction: This node never appears
-- N_Entry_Index_Specification
-- Sloc points to FOR
-- Defining_Identifier (Node1)
-- Discrete_Subtype_Definition (Node4)
---------------------------------
-- 9.5.3 Entry Call Statement --
---------------------------------
-- ENTRY_CALL_STATEMENT ::= entry_NAME [ACTUAL_PARAMETER_PART];
-- The parser may generate a procedure call for this construct. The
-- semantic pass must correct this misidentification where needed.
-- Gigi restriction: This node never appears
-- N_Entry_Call_Statement
-- Sloc points to first token of name
-- Name (Node2)
-- Parameter_Associations (List3) (set to No_List if no
-- actual parameter part)
-- First_Named_Actual (Node4-Sem)
------------------------------
-- 9.5.4 Requeue Statement --
------------------------------
-- REQUEUE_STATEMENT ::= requeue entry_NAME [with abort];
-- Note: requeue statements are not permitted in Ada 83 mode
-- Gigi restriction: This node never appears
-- N_Requeue_Statement
-- Sloc points to REQUEUE
-- Name (Node2)
-- Abort_Present (Flag15)
--------------------------
-- 9.6 Delay Statement --
--------------------------
-- DELAY_STATEMENT ::=
-- DELAY_UNTIL_STATEMENT
-- | DELAY_RELATIVE_STATEMENT
--------------------------------
-- 9.6 Delay Until Statement --
--------------------------------
-- DELAY_UNTIL_STATEMENT ::= delay until delay_EXPRESSION;
-- Note: delay until statements are not permitted in Ada 83 mode
-- Gigi restriction: This node never appears
-- N_Delay_Until_Statement
-- Sloc points to DELAY
-- Expression (Node3)
-----------------------------------
-- 9.6 Delay Relative Statement --
-----------------------------------
-- DELAY_RELATIVE_STATEMENT ::= delay delay_EXPRESSION;
-- Gigi restriction: This node never appears
-- N_Delay_Relative_Statement
-- Sloc points to DELAY
-- Expression (Node3)
---------------------------
-- 9.7 Select Statement --
---------------------------
-- SELECT_STATEMENT ::=
-- SELECTIVE_ACCEPT
-- | TIMED_ENTRY_CALL
-- | CONDITIONAL_ENTRY_CALL
-- | ASYNCHRONOUS_SELECT
-----------------------------
-- 9.7.1 Selective Accept --
-----------------------------
-- SELECTIVE_ACCEPT ::=
-- select
-- [GUARD]
-- SELECT_ALTERNATIVE
-- {or
-- [GUARD]
-- SELECT_ALTERNATIVE}
-- [else
-- SEQUENCE_OF_STATEMENTS]
-- end select;
-- Gigi restriction: This node never appears
-- Note: the guard expression, if present, appears in the node for
-- the select alternative.
-- N_Selective_Accept
-- Sloc points to SELECT
-- Select_Alternatives (List1)
-- Else_Statements (List4) (set to No_List if no else part)
------------------
-- 9.7.1 Guard --
------------------
-- GUARD ::= when CONDITION =>
-- As noted above, the CONDITION that is part of a GUARD is included
-- in the node for the select alternative for convenience.
-------------------------------
-- 9.7.1 Select Alternative --
-------------------------------
-- SELECT_ALTERNATIVE ::=
-- ACCEPT_ALTERNATIVE
-- | DELAY_ALTERNATIVE
-- | TERMINATE_ALTERNATIVE
-------------------------------
-- 9.7.1 Accept Alternative --
-------------------------------
-- ACCEPT_ALTERNATIVE ::=
-- ACCEPT_STATEMENT [SEQUENCE_OF_STATEMENTS]
-- Gigi restriction: This node never appears
-- N_Accept_Alternative
-- Sloc points to ACCEPT
-- Accept_Statement (Node2)
-- Condition (Node1) from the guard (set to Empty if no guard present)
-- Statements (List3) (set to Empty_List if no statements)
-- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
-- Accept_Handler_Records (List5-Sem)
------------------------------
-- 9.7.1 Delay Alternative --
------------------------------
-- DELAY_ALTERNATIVE ::=
-- DELAY_STATEMENT [SEQUENCE_OF_STATEMENTS]
-- Gigi restriction: This node never appears
-- N_Delay_Alternative
-- Sloc points to DELAY
-- Delay_Statement (Node2)
-- Condition (Node1) from the guard (set to Empty if no guard present)
-- Statements (List3) (set to Empty_List if no statements)
-- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
----------------------------------
-- 9.7.1 Terminate Alternative --
----------------------------------
-- TERMINATE_ALTERNATIVE ::= terminate;
-- Gigi restriction: This node never appears
-- N_Terminate_Alternative
-- Sloc points to TERMINATE
-- Condition (Node1) from the guard (set to Empty if no guard present)
-- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
-- Pragmas_After (List5) pragmas after alt (set to No_List if none)
-----------------------------
-- 9.7.2 Timed Entry Call --
-----------------------------
-- TIMED_ENTRY_CALL ::=
-- select
-- ENTRY_CALL_ALTERNATIVE
-- or
-- DELAY_ALTERNATIVE
-- end select;
-- Gigi restriction: This node never appears
-- N_Timed_Entry_Call
-- Sloc points to SELECT
-- Entry_Call_Alternative (Node1)
-- Delay_Alternative (Node4)
-----------------------------------
-- 9.7.2 Entry Call Alternative --
-----------------------------------
-- ENTRY_CALL_ALTERNATIVE ::=
-- PROCEDURE_OR_ENTRY_CALL [SEQUENCE_OF_STATEMENTS]
-- PROCEDURE_OR_ENTRY_CALL ::=
-- PROCEDURE_CALL_STATEMENT | ENTRY_CALL_STATEMENT
-- Gigi restriction: This node never appears
-- N_Entry_Call_Alternative
-- Sloc points to first token of entry call statement
-- Entry_Call_Statement (Node1)
-- Statements (List3) (set to Empty_List if no statements)
-- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
-----------------------------------
-- 9.7.3 Conditional Entry Call --
-----------------------------------
-- CONDITIONAL_ENTRY_CALL ::=
-- select
-- ENTRY_CALL_ALTERNATIVE
-- else
-- SEQUENCE_OF_STATEMENTS
-- end select;
-- Gigi restriction: This node never appears
-- N_Conditional_Entry_Call
-- Sloc points to SELECT
-- Entry_Call_Alternative (Node1)
-- Else_Statements (List4)
--------------------------------
-- 9.7.4 Asynchronous Select --
--------------------------------
-- ASYNCHRONOUS_SELECT ::=
-- select
-- TRIGGERING_ALTERNATIVE
-- then abort
-- ABORTABLE_PART
-- end select;
-- Note: asynchronous select is not permitted in Ada 83 mode
-- Gigi restriction: This node never appears
-- N_Asynchronous_Select
-- Sloc points to SELECT
-- Triggering_Alternative (Node1)
-- Abortable_Part (Node2)
-----------------------------------
-- 9.7.4 Triggering Alternative --
-----------------------------------
-- TRIGGERING_ALTERNATIVE ::=
-- TRIGGERING_STATEMENT [SEQUENCE_OF_STATEMENTS]
-- Gigi restriction: This node never appears
-- N_Triggering_Alternative
-- Sloc points to first token of triggering statement
-- Triggering_Statement (Node1)
-- Statements (List3) (set to Empty_List if no statements)
-- Pragmas_Before (List4) pragmas before alt (set to No_List if none)
---------------------------------
-- 9.7.4 Triggering Statement --
---------------------------------
-- TRIGGERING_STATEMENT ::= PROCEDURE_OR_ENTRY_CALL | DELAY_STATEMENT
---------------------------
-- 9.7.4 Abortable Part --
---------------------------
-- ABORTABLE_PART ::= SEQUENCE_OF_STATEMENTS
-- Gigi restriction: This node never appears
-- N_Abortable_Part
-- Sloc points to ABORT
-- Statements (List3)
--------------------------
-- 9.8 Abort Statement --
--------------------------
-- ABORT_STATEMENT ::= abort task_NAME {, task_NAME};
-- Gigi restriction: This node never appears
-- N_Abort_Statement
-- Sloc points to ABORT
-- Names (List2)
-------------------------
-- 10.1.1 Compilation --
-------------------------
-- COMPILATION ::= {COMPILATION_UNIT}
-- There is no explicit node in the tree for a compilation, since in
-- general the compiler is processing only a single compilation unit
-- at a time. It is possible to parse multiple units in syntax check
-- only mode, but the trees are discarded in that case.
------------------------------
-- 10.1.1 Compilation Unit --
------------------------------
-- COMPILATION_UNIT ::=
-- CONTEXT_CLAUSE LIBRARY_ITEM
-- | CONTEXT_CLAUSE SUBUNIT
-- The N_Compilation_Unit node itself represents the above syntax.
-- However, there are two additional items not reflected in the above
-- syntax. First we have the global declarations that are added by the
-- code generator. These are outer level declarations (so they cannot
-- be represented as being inside the units). An example is the wrapper
-- subprograms that are created to do ABE checking. As always a list of
-- declarations can contain actions as well (i.e. statements), and such
-- statements are executed as part of the elaboration of the unit. Note
-- that all such declarations are elaborated before the library unit.
-- Similarly, certain actions need to be elaborated at the completion
-- of elaboration of the library unit (notably the statement that sets
-- the Boolean flag indicating that elaboration is complete).
-- The third item not reflected in the syntax is pragmas that appear
-- after the compilation unit. As always pragmas are a problem since
-- they are not part of the formal syntax, but can be stuck into the
-- source following a set of ad hoc rules, and we have to find an ad
-- hoc way of sticking them into the tree. For pragmas that appear
-- before the library unit, we just consider them to be part of the
-- context clause, and pragmas can appear in the Context_Items list
-- of the compilation unit. However, pragmas can also appear after
-- the library item.
-- To deal with all these problems, we create an auxiliary node for
-- a compilation unit, referenced from the N_Compilation_Unit node,
-- that contains these items.
-- N_Compilation_Unit
-- Sloc points to first token of defining unit name
-- Library_Unit (Node4-Sem) corresponding/parent spec/body
-- Context_Items (List1) context items and pragmas preceding unit
-- Private_Present (Flag15) set if library unit has private keyword
-- Unit (Node2) library item or subunit
-- Aux_Decls_Node (Node5) points to the N_Compilation_Unit_Aux node
-- Has_No_Elaboration_Code (Flag17-Sem)
-- Body_Required (Flag13-Sem) set for spec if body is required
-- Acts_As_Spec (Flag4-Sem) flag for subprogram body with no spec
-- Context_Pending (Flag16-Sem)
-- First_Inlined_Subprogram (Node3-Sem)
-- Has_Pragma_Suppress_All (Flag14-Sem)
-- N_Compilation_Unit_Aux
-- Sloc is a copy of the Sloc from the N_Compilation_Unit node
-- Declarations (List2) (set to No_List if no global declarations)
-- Actions (List1) (set to No_List if no actions)
-- Pragmas_After (List5) pragmas after unit (set to No_List if none)
-- Config_Pragmas (List4) config pragmas (set to Empty_List if none)
-- Default_Storage_Pool (Node3-Sem)
--------------------------
-- 10.1.1 Library Item --
--------------------------
-- LIBRARY_ITEM ::=
-- [private] LIBRARY_UNIT_DECLARATION
-- | LIBRARY_UNIT_BODY
-- | [private] LIBRARY_UNIT_RENAMING_DECLARATION
-- Note: PRIVATE is not allowed in Ada 83 mode
-- There is no explicit node in the tree for library item, instead
-- the declaration or body, and the flag for private if present,
-- appear in the N_Compilation_Unit node.
--------------------------------------
-- 10.1.1 Library Unit Declaration --
--------------------------------------
-- LIBRARY_UNIT_DECLARATION ::=
-- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
-- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
-----------------------------------------------
-- 10.1.1 Library Unit Renaming Declaration --
-----------------------------------------------
-- LIBRARY_UNIT_RENAMING_DECLARATION ::=
-- PACKAGE_RENAMING_DECLARATION
-- | GENERIC_RENAMING_DECLARATION
-- | SUBPROGRAM_RENAMING_DECLARATION
-------------------------------
-- 10.1.1 Library unit body --
-------------------------------
-- LIBRARY_UNIT_BODY ::= SUBPROGRAM_BODY | PACKAGE_BODY
------------------------------
-- 10.1.1 Parent Unit Name --
------------------------------
-- PARENT_UNIT_NAME ::= NAME
----------------------------
-- 10.1.2 Context clause --
----------------------------
-- CONTEXT_CLAUSE ::= {CONTEXT_ITEM}
-- The context clause can include pragmas, and any pragmas that appear
-- before the context clause proper (i.e. all configuration pragmas,
-- also appear at the front of this list).
--------------------------
-- 10.1.2 Context_Item --
--------------------------
-- CONTEXT_ITEM ::= WITH_CLAUSE | USE_CLAUSE | WITH_TYPE_CLAUSE
-------------------------
-- 10.1.2 With clause --
-------------------------
-- WITH_CLAUSE ::=
-- with library_unit_NAME {,library_unit_NAME};
-- A separate With clause is built for each name, so that we have
-- a Corresponding_Spec field for each with'ed spec. The flags
-- First_Name and Last_Name are used to reconstruct the exact
-- source form. When a list of names appears in one with clause,
-- the first name in the list has First_Name set, and the last
-- has Last_Name set. If the with clause has only one name, then
-- both of the flags First_Name and Last_Name are set in this name.
-- Note: in the case of implicit with's that are installed by the
-- Rtsfind routine, Implicit_With is set, and the Sloc is typically
-- set to Standard_Location, but it is incorrect to test the Sloc
-- to find out if a with clause is implicit, test the flag instead.
-- N_With_Clause
-- Sloc points to first token of library unit name
-- Withed_Body (Node1-Sem)
-- Name (Node2)
-- Next_Implicit_With (Node3-Sem)
-- Library_Unit (Node4-Sem)
-- Corresponding_Spec (Node5-Sem)
-- First_Name (Flag5) (set to True if first name or only one name)
-- Last_Name (Flag6) (set to True if last name or only one name)
-- Context_Installed (Flag13-Sem)
-- Elaborate_Present (Flag4-Sem)
-- Elaborate_All_Present (Flag14-Sem)
-- Elaborate_All_Desirable (Flag9-Sem)
-- Elaborate_Desirable (Flag11-Sem)
-- Private_Present (Flag15) set if with_clause has private keyword
-- Implicit_With (Flag16-Sem)
-- Implicit_With_From_Instantiation (Flag12-Sem)
-- Limited_Present (Flag17) set if LIMITED is present
-- Limited_View_Installed (Flag18-Sem)
-- Unreferenced_In_Spec (Flag7-Sem)
-- No_Entities_Ref_In_Spec (Flag8-Sem)
-- Note: Limited_Present and Limited_View_Installed are used to support
-- the implementation of Ada 2005 (AI-50217).
-- Similarly, Private_Present is used to support the implementation of
-- Ada 2005 (AI-50262).
----------------------
-- With_Type clause --
----------------------
-- This is a GNAT extension, used to implement mutually recursive
-- types declared in different packages.
-- Note: this is now obsolete. The functionality of this construct
-- is now implemented by the Ada 2005 limited_with_clause.
---------------------
-- 10.2 Body stub --
---------------------
-- BODY_STUB ::=
-- SUBPROGRAM_BODY_STUB
-- | PACKAGE_BODY_STUB
-- | TASK_BODY_STUB
-- | PROTECTED_BODY_STUB
----------------------------------
-- 10.1.3 Subprogram Body Stub --
----------------------------------
-- SUBPROGRAM_BODY_STUB ::=
-- SUBPROGRAM_SPECIFICATION is separate
-- [ASPECT_SPECIFICATION];
-- N_Subprogram_Body_Stub
-- Sloc points to FUNCTION or PROCEDURE
-- Specification (Node1)
-- Corresponding_Spec_Of_Stub (Node2-Sem)
-- Library_Unit (Node4-Sem) points to the subunit
-- Corresponding_Body (Node5-Sem)
-------------------------------
-- 10.1.3 Package Body Stub --
-------------------------------
-- PACKAGE_BODY_STUB ::=
-- package body DEFINING_IDENTIFIER is separate
-- [ASPECT_SPECIFICATION];
-- N_Package_Body_Stub
-- Sloc points to PACKAGE
-- Defining_Identifier (Node1)
-- Corresponding_Spec_Of_Stub (Node2-Sem)
-- Library_Unit (Node4-Sem) points to the subunit
-- Corresponding_Body (Node5-Sem)
----------------------------
-- 10.1.3 Task Body Stub --
----------------------------
-- TASK_BODY_STUB ::=
-- task body DEFINING_IDENTIFIER is separate
-- [ASPECT_SPECIFICATION];
-- N_Task_Body_Stub
-- Sloc points to TASK
-- Defining_Identifier (Node1)
-- Corresponding_Spec_Of_Stub (Node2-Sem)
-- Library_Unit (Node4-Sem) points to the subunit
-- Corresponding_Body (Node5-Sem)
---------------------------------
-- 10.1.3 Protected Body Stub --
---------------------------------
-- PROTECTED_BODY_STUB ::=
-- protected body DEFINING_IDENTIFIER is separate
-- [ASPECT_SPECIFICATION];
-- Note: protected body stubs are not allowed in Ada 83 mode
-- N_Protected_Body_Stub
-- Sloc points to PROTECTED
-- Defining_Identifier (Node1)
-- Corresponding_Spec_Of_Stub (Node2-Sem)
-- Library_Unit (Node4-Sem) points to the subunit
-- Corresponding_Body (Node5-Sem)
---------------------
-- 10.1.3 Subunit --
---------------------
-- SUBUNIT ::= separate (PARENT_UNIT_NAME) PROPER_BODY
-- N_Subunit
-- Sloc points to SEPARATE
-- Name (Node2) is the name of the parent unit
-- Proper_Body (Node1) is the subunit body
-- Corresponding_Stub (Node3-Sem) is the stub declaration for the unit.
---------------------------------
-- 11.1 Exception Declaration --
---------------------------------
-- EXCEPTION_DECLARATION ::= DEFINING_IDENTIFIER_LIST : exception
-- [ASPECT_SPECIFICATIONS];
-- For consistency with object declarations etc., the parser converts
-- the case of multiple identifiers being declared to a series of
-- declarations in which the expression is copied, using the More_Ids
-- and Prev_Ids flags to remember the source form as described in the
-- section on "Handling of Defining Identifier Lists".
-- N_Exception_Declaration
-- Sloc points to EXCEPTION
-- Defining_Identifier (Node1)
-- Expression (Node3-Sem)
-- Renaming_Exception (Node2-Sem)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
------------------------------------------
-- 11.2 Handled Sequence Of Statements --
------------------------------------------
-- HANDLED_SEQUENCE_OF_STATEMENTS ::=
-- SEQUENCE_OF_STATEMENTS
-- [exception
-- EXCEPTION_HANDLER
-- {EXCEPTION_HANDLER}]
-- [at end
-- cleanup_procedure_call (param, param, param, ...);]
-- The AT END phrase is a GNAT extension to provide for cleanups. It is
-- used only internally currently, but is considered to be syntactic.
-- At the moment, the only cleanup action allowed is a single call to
-- a parameterless procedure, and the Identifier field of the node is
-- the procedure to be called. The cleanup action occurs whenever the
-- sequence of statements is left for any reason. The possible reasons
-- are:
-- 1. reaching the end of the sequence
-- 2. exit, return, or goto
-- 3. exception or abort
-- For some back ends, such as gcc with ZCX, "at end" is implemented
-- entirely in the back end. In this case, a handled sequence of
-- statements with an "at end" cannot also have exception handlers.
-- For other back ends, such as gcc with SJLJ and .NET, the
-- implementation is split between the front end and back end; the front
-- end implements 3, and the back end implements 1 and 2. In this case,
-- if there is an "at end", the front end inserts the appropriate
-- exception handler, and this handler takes precedence over "at end"
-- in case of exception.
-- The inserted exception handler is of the form:
-- when all others =>
-- cleanup;
-- raise;
-- where cleanup is the procedure to be called. The reason we do this is
-- so that the front end can handle the necessary entries in the
-- exception tables, and other exception handler actions required as
-- part of the normal handling for exception handlers.
-- The AT END cleanup handler protects only the sequence of statements
-- (not the associated declarations of the parent), just like exception
-- handlers. The big difference is that the cleanup procedure is called
-- on either a normal or an abnormal exit from the statement sequence.
-- Note: the list of Exception_Handlers can contain pragmas as well
-- as actual handlers. In practice these pragmas can only occur at
-- the start of the list, since any pragmas occurring later on will
-- be included in the statement list of the corresponding handler.
-- Note: although in the Ada syntax, the sequence of statements in
-- a handled sequence of statements can only contain statements, we
-- allow free mixing of declarations and statements in the resulting
-- expanded tree. This is for example used to deal with the case of
-- a cleanup procedure that must handle declarations as well as the
-- statements of a block.
-- N_Handled_Sequence_Of_Statements
-- Sloc points to first token of first statement
-- Statements (List3)
-- End_Label (Node4) (set to Empty if expander generated)
-- Exception_Handlers (List5) (set to No_List if none present)
-- At_End_Proc (Node1) (set to Empty if no clean up procedure)
-- First_Real_Statement (Node2-Sem)
-- Note: the parent always contains a Declarations field which contains
-- declarations associated with the handled sequence of statements. This
-- is true even in the case of an accept statement (see description of
-- the N_Accept_Statement node).
-- End_Label refers to the containing construct
-----------------------------
-- 11.2 Exception Handler --
-----------------------------
-- EXCEPTION_HANDLER ::=
-- when [CHOICE_PARAMETER_SPECIFICATION :]
-- EXCEPTION_CHOICE {| EXCEPTION_CHOICE} =>
-- SEQUENCE_OF_STATEMENTS
-- Note: choice parameter specification is not allowed in Ada 83 mode
-- N_Exception_Handler
-- Sloc points to WHEN
-- Choice_Parameter (Node2) (set to Empty if not present)
-- Exception_Choices (List4)
-- Statements (List3)
-- Exception_Label (Node5-Sem) (set to Empty of not present)
-- Local_Raise_Statements (Elist1-Sem) (set to No_Elist if not present)
-- Local_Raise_Not_OK (Flag7-Sem)
-- Has_Local_Raise (Flag8-Sem)
------------------------------------------
-- 11.2 Choice parameter specification --
------------------------------------------
-- CHOICE_PARAMETER_SPECIFICATION ::= DEFINING_IDENTIFIER
----------------------------
-- 11.2 Exception Choice --
----------------------------
-- EXCEPTION_CHOICE ::= exception_NAME | others
-- Except in the case of OTHERS, no explicit node appears in the tree
-- for exception choice. Instead the exception name appears directly.
-- An OTHERS choice is represented by a N_Others_Choice node (see
-- section 3.8.1.
-- Note: for the exception choice created for an at end handler, the
-- exception choice is an N_Others_Choice node with All_Others set.
---------------------------
-- 11.3 Raise Statement --
---------------------------
-- RAISE_STATEMENT ::= raise [exception_NAME];
-- In Ada 2005, we have
-- RAISE_STATEMENT ::=
-- raise; | raise exception_NAME [with string_EXPRESSION];
-- N_Raise_Statement
-- Sloc points to RAISE
-- Name (Node2) (set to Empty if no exception name present)
-- Expression (Node3) (set to Empty if no expression present)
-- From_At_End (Flag4-Sem)
----------------------------
-- 11.3 Raise Expression --
----------------------------
-- RAISE_EXPRESSION ::= raise exception_NAME [with string_EXPRESSION]
-- N_Raise_Expression
-- Sloc points to RAISE
-- Name (Node2) (always present)
-- Expression (Node3) (set to Empty if no expression present)
-- Convert_To_Return_False (Flag13-Sem)
-- plus fields for expression
-------------------------------
-- 12.1 Generic Declaration --
-------------------------------
-- GENERIC_DECLARATION ::=
-- GENERIC_SUBPROGRAM_DECLARATION | GENERIC_PACKAGE_DECLARATION
------------------------------------------
-- 12.1 Generic Subprogram Declaration --
------------------------------------------
-- GENERIC_SUBPROGRAM_DECLARATION ::=
-- GENERIC_FORMAL_PART SUBPROGRAM_SPECIFICATION
-- [ASPECT_SPECIFICATIONS];
-- Note: Generic_Formal_Declarations can include pragmas
-- N_Generic_Subprogram_Declaration
-- Sloc points to GENERIC
-- Specification (Node1) subprogram specification
-- Corresponding_Body (Node5-Sem)
-- Generic_Formal_Declarations (List2) from generic formal part
-- Parent_Spec (Node4-Sem)
---------------------------------------
-- 12.1 Generic Package Declaration --
---------------------------------------
-- GENERIC_PACKAGE_DECLARATION ::=
-- GENERIC_FORMAL_PART PACKAGE_SPECIFICATION
-- [ASPECT_SPECIFICATIONS];
-- Note: when we do generics right, the Activation_Chain_Entity entry
-- for this node can be removed (since the expander won't see generic
-- units any more)???.
-- Note: Generic_Formal_Declarations can include pragmas
-- N_Generic_Package_Declaration
-- Sloc points to GENERIC
-- Specification (Node1) package specification
-- Corresponding_Body (Node5-Sem)
-- Generic_Formal_Declarations (List2) from generic formal part
-- Parent_Spec (Node4-Sem)
-- Activation_Chain_Entity (Node3-Sem)
-------------------------------
-- 12.1 Generic Formal Part --
-------------------------------
-- GENERIC_FORMAL_PART ::=
-- generic {GENERIC_FORMAL_PARAMETER_DECLARATION | USE_CLAUSE}
------------------------------------------------
-- 12.1 Generic Formal Parameter Declaration --
------------------------------------------------
-- GENERIC_FORMAL_PARAMETER_DECLARATION ::=
-- FORMAL_OBJECT_DECLARATION
-- | FORMAL_TYPE_DECLARATION
-- | FORMAL_SUBPROGRAM_DECLARATION
-- | FORMAL_PACKAGE_DECLARATION
---------------------------------
-- 12.3 Generic Instantiation --
---------------------------------
-- GENERIC_INSTANTIATION ::=
-- package DEFINING_PROGRAM_UNIT_NAME is
-- new generic_package_NAME [GENERIC_ACTUAL_PART]
-- [ASPECT_SPECIFICATIONS];
-- | [[not] overriding]
-- procedure DEFINING_PROGRAM_UNIT_NAME is
-- new generic_procedure_NAME [GENERIC_ACTUAL_PART]
-- [ASPECT_SPECIFICATIONS];
-- | [[not] overriding]
-- function DEFINING_DESIGNATOR is
-- new generic_function_NAME [GENERIC_ACTUAL_PART]
-- [ASPECT_SPECIFICATIONS];
-- N_Package_Instantiation
-- Sloc points to PACKAGE
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Generic_Associations (List3) (set to No_List if no
-- generic actual part)
-- Parent_Spec (Node4-Sem)
-- Instance_Spec (Node5-Sem)
-- ABE_Is_Certain (Flag18-Sem)
-- N_Procedure_Instantiation
-- Sloc points to PROCEDURE
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Parent_Spec (Node4-Sem)
-- Generic_Associations (List3) (set to No_List if no
-- generic actual part)
-- Instance_Spec (Node5-Sem)
-- Must_Override (Flag14) set if overriding indicator present
-- Must_Not_Override (Flag15) set if not_overriding indicator present
-- ABE_Is_Certain (Flag18-Sem)
-- N_Function_Instantiation
-- Sloc points to FUNCTION
-- Defining_Unit_Name (Node1)
-- Name (Node2)
-- Generic_Associations (List3) (set to No_List if no
-- generic actual part)
-- Parent_Spec (Node4-Sem)
-- Instance_Spec (Node5-Sem)
-- Must_Override (Flag14) set if overriding indicator present
-- Must_Not_Override (Flag15) set if not_overriding indicator present
-- ABE_Is_Certain (Flag18-Sem)
-- Note: overriding indicator is an Ada 2005 feature
-------------------------------
-- 12.3 Generic Actual Part --
-------------------------------
-- GENERIC_ACTUAL_PART ::=
-- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
-------------------------------
-- 12.3 Generic Association --
-------------------------------
-- GENERIC_ASSOCIATION ::=
-- [generic_formal_parameter_SELECTOR_NAME =>]
-- Note: unlike the procedure call case, a generic association node
-- is generated for every association, even if no formal parameter
-- selector name is present. In this case the parser will leave the
-- Selector_Name field set to Empty, to be filled in later by the
-- semantic pass.
-- In Ada 2005, a formal may be associated with a box, if the
-- association is part of the list of actuals for a formal package.
-- If the association is given by OTHERS => <>, the association is
-- an N_Others_Choice.
-- N_Generic_Association
-- Sloc points to first token of generic association
-- Selector_Name (Node2) (set to Empty if no formal
-- parameter selector name)
-- Explicit_Generic_Actual_Parameter (Node1) (Empty if box present)
-- Box_Present (Flag15) (for formal_package associations with a box)
---------------------------------------------
-- 12.3 Explicit Generic Actual Parameter --
---------------------------------------------
-- EXPLICIT_GENERIC_ACTUAL_PARAMETER ::=
-- EXPRESSION | variable_NAME | subprogram_NAME
-- | entry_NAME | SUBTYPE_MARK | package_instance_NAME
-------------------------------------
-- 12.4 Formal Object Declaration --
-------------------------------------
-- FORMAL_OBJECT_DECLARATION ::=
-- DEFINING_IDENTIFIER_LIST :
-- MODE [NULL_EXCLUSION] SUBTYPE_MARK [:= DEFAULT_EXPRESSION]
-- [ASPECT_SPECIFICATIONS];
-- | DEFINING_IDENTIFIER_LIST :
-- MODE ACCESS_DEFINITION [:= DEFAULT_EXPRESSION]
-- [ASPECT_SPECIFICATIONS];
-- Although the syntax allows multiple identifiers in the list, the
-- semantics is as though successive declarations were given with
-- identical type definition and expression components. To simplify
-- semantic processing, the parser represents a multiple declaration
-- case as a sequence of single declarations, using the More_Ids and
-- Prev_Ids flags to preserve the original source form as described
-- in the section on "Handling of Defining Identifier Lists".
-- N_Formal_Object_Declaration
-- Sloc points to first identifier
-- Defining_Identifier (Node1)
-- In_Present (Flag15)
-- Out_Present (Flag17)
-- Null_Exclusion_Present (Flag11) (set to False if not present)
-- Subtype_Mark (Node4) (set to Empty if not present)
-- Access_Definition (Node3) (set to Empty if not present)
-- Default_Expression (Node5) (set to Empty if no default expression)
-- More_Ids (Flag5) (set to False if no more identifiers in list)
-- Prev_Ids (Flag6) (set to False if no previous identifiers in list)
-----------------------------------
-- 12.5 Formal Type Declaration --
-----------------------------------
-- FORMAL_TYPE_DECLARATION ::=
-- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
-- is FORMAL_TYPE_DEFINITION
-- [ASPECT_SPECIFICATIONS];
-- | type DEFINING_IDENTIFIER [DISCRIMINANT_PART] [is tagged]
-- N_Formal_Type_Declaration
-- Sloc points to TYPE
-- Defining_Identifier (Node1)
-- Formal_Type_Definition (Node3)
-- Discriminant_Specifications (List4) (set to No_List if no
-- discriminant part)
-- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
----------------------------------
-- 12.5 Formal type definition --
----------------------------------
-- FORMAL_TYPE_DEFINITION ::=
-- FORMAL_PRIVATE_TYPE_DEFINITION
-- | FORMAL_DERIVED_TYPE_DEFINITION
-- | FORMAL_DISCRETE_TYPE_DEFINITION
-- | FORMAL_SIGNED_INTEGER_TYPE_DEFINITION
-- | FORMAL_MODULAR_TYPE_DEFINITION
-- | FORMAL_FLOATING_POINT_DEFINITION
-- | FORMAL_ORDINARY_FIXED_POINT_DEFINITION
-- | FORMAL_DECIMAL_FIXED_POINT_DEFINITION
-- | FORMAL_ARRAY_TYPE_DEFINITION
-- | FORMAL_ACCESS_TYPE_DEFINITION
-- | FORMAL_INTERFACE_TYPE_DEFINITION
-- | FORMAL_INCOMPLETE_TYPE_DEFINITION
-- The Ada 2012 syntax introduces two new non-terminals:
-- Formal_{Complete,Incomplete}_Type_Declaration just to introduce
-- the latter category. Here we introduce an incomplete type definition
-- in order to preserve as much as possible the existing structure.
---------------------------------------------
-- 12.5.1 Formal Private Type Definition --
---------------------------------------------
-- FORMAL_PRIVATE_TYPE_DEFINITION ::=
-- [[abstract] tagged] [limited] private
-- Note: TAGGED is not allowed in Ada 83 mode
-- N_Formal_Private_Type_Definition
-- Sloc points to PRIVATE
-- Abstract_Present (Flag4)
-- Tagged_Present (Flag15)
-- Limited_Present (Flag17)
--------------------------------------------
-- 12.5.1 Formal Derived Type Definition --
--------------------------------------------
-- FORMAL_DERIVED_TYPE_DEFINITION ::=
-- [abstract] [limited | synchronized]
-- new SUBTYPE_MARK [[and INTERFACE_LIST] with private]
-- Note: this construct is not allowed in Ada 83 mode
-- N_Formal_Derived_Type_Definition
-- Sloc points to NEW
-- Subtype_Mark (Node4)
-- Private_Present (Flag15)
-- Abstract_Present (Flag4)
-- Limited_Present (Flag17)
-- Synchronized_Present (Flag7)
-- Interface_List (List2) (set to No_List if none)
-----------------------------------------------
-- 12.5.1 Formal Incomplete Type Definition --
-----------------------------------------------
-- FORMAL_INCOMPLETE_TYPE_DEFINITION ::= [tagged]
-- N_Formal_Incomplete_Type_Definition
-- Sloc points to identifier of parent
-- Tagged_Present (Flag15)
---------------------------------------------
-- 12.5.2 Formal Discrete Type Definition --
---------------------------------------------
-- FORMAL_DISCRETE_TYPE_DEFINITION ::= (<>)
-- N_Formal_Discrete_Type_Definition
-- Sloc points to (
---------------------------------------------------
-- 12.5.2 Formal Signed Integer Type Definition --
---------------------------------------------------
-- FORMAL_SIGNED_INTEGER_TYPE_DEFINITION ::= range <>
-- N_Formal_Signed_Integer_Type_Definition
-- Sloc points to RANGE
--------------------------------------------
-- 12.5.2 Formal Modular Type Definition --
--------------------------------------------
-- FORMAL_MODULAR_TYPE_DEFINITION ::= mod <>
-- N_Formal_Modular_Type_Definition
-- Sloc points to MOD
----------------------------------------------
-- 12.5.2 Formal Floating Point Definition --
----------------------------------------------
-- FORMAL_FLOATING_POINT_DEFINITION ::= digits <>
-- N_Formal_Floating_Point_Definition
-- Sloc points to DIGITS
----------------------------------------------------
-- 12.5.2 Formal Ordinary Fixed Point Definition --
----------------------------------------------------
-- FORMAL_ORDINARY_FIXED_POINT_DEFINITION ::= delta <>
-- N_Formal_Ordinary_Fixed_Point_Definition
-- Sloc points to DELTA
---------------------------------------------------
-- 12.5.2 Formal Decimal Fixed Point Definition --
---------------------------------------------------
-- FORMAL_DECIMAL_FIXED_POINT_DEFINITION ::= delta <> digits <>
-- Note: formal decimal fixed point definition not allowed in Ada 83
-- N_Formal_Decimal_Fixed_Point_Definition
-- Sloc points to DELTA
------------------------------------------
-- 12.5.3 Formal Array Type Definition --
------------------------------------------
-- FORMAL_ARRAY_TYPE_DEFINITION ::= ARRAY_TYPE_DEFINITION
-------------------------------------------
-- 12.5.4 Formal Access Type Definition --
-------------------------------------------
-- FORMAL_ACCESS_TYPE_DEFINITION ::= ACCESS_TYPE_DEFINITION
----------------------------------------------
-- 12.5.5 Formal Interface Type Definition --
----------------------------------------------
-- FORMAL_INTERFACE_TYPE_DEFINITION ::= INTERFACE_TYPE_DEFINITION
-----------------------------------------
-- 12.6 Formal Subprogram Declaration --
-----------------------------------------
-- FORMAL_SUBPROGRAM_DECLARATION ::=
-- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION
-- | FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION
--------------------------------------------------
-- 12.6 Formal Concrete Subprogram Declaration --
--------------------------------------------------
-- FORMAL_CONCRETE_SUBPROGRAM_DECLARATION ::=
-- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT]
-- [ASPECT_SPECIFICATIONS];
-- N_Formal_Concrete_Subprogram_Declaration
-- Sloc points to WITH
-- Specification (Node1)
-- Default_Name (Node2) (set to Empty if no subprogram default)
-- Box_Present (Flag15)
-- Note: if no subprogram default is present, then Name is set
-- to Empty, and Box_Present is False.
--------------------------------------------------
-- 12.6 Formal Abstract Subprogram Declaration --
--------------------------------------------------
-- FORMAL_ABSTRACT_SUBPROGRAM_DECLARATION ::=
-- with SUBPROGRAM_SPECIFICATION is abstract [SUBPROGRAM_DEFAULT]
-- [ASPECT_SPECIFICATIONS];
-- N_Formal_Abstract_Subprogram_Declaration
-- Sloc points to WITH
-- Specification (Node1)
-- Default_Name (Node2) (set to Empty if no subprogram default)
-- Box_Present (Flag15)
-- Note: if no subprogram default is present, then Name is set
-- to Empty, and Box_Present is False.
------------------------------
-- 12.6 Subprogram Default --
------------------------------
-- SUBPROGRAM_DEFAULT ::= DEFAULT_NAME | <>
-- There is no separate node in the tree for a subprogram default.
-- Instead the parent (N_Formal_Concrete_Subprogram_Declaration
-- or N_Formal_Abstract_Subprogram_Declaration) node contains the
-- default name or box indication, as needed.
------------------------
-- 12.6 Default Name --
------------------------
-- DEFAULT_NAME ::= NAME
--------------------------------------
-- 12.7 Formal Package Declaration --
--------------------------------------
-- FORMAL_PACKAGE_DECLARATION ::=
-- with package DEFINING_IDENTIFIER
-- is new generic_package_NAME FORMAL_PACKAGE_ACTUAL_PART
-- [ASPECT_SPECIFICATIONS];
-- Note: formal package declarations not allowed in Ada 83 mode
-- N_Formal_Package_Declaration
-- Sloc points to WITH
-- Defining_Identifier (Node1)
-- Name (Node2)
-- Generic_Associations (List3) (set to No_List if (<>) case or
-- empty generic actual part)
-- Box_Present (Flag15)
-- Instance_Spec (Node5-Sem)
-- ABE_Is_Certain (Flag18-Sem)
--------------------------------------
-- 12.7 Formal Package Actual Part --
--------------------------------------
-- FORMAL_PACKAGE_ACTUAL_PART ::=
-- ([OTHERS] => <>)
-- | [GENERIC_ACTUAL_PART]
-- (FORMAL_PACKAGE_ASSOCIATION {. FORMAL_PACKAGE_ASSOCIATION}
-- FORMAL_PACKAGE_ASSOCIATION ::=
-- GENERIC_ASSOCIATION
-- | GENERIC_FORMAL_PARAMETER_SELECTOR_NAME => <>
-- There is no explicit node in the tree for a formal package actual
-- part. Instead the information appears in the parent node (i.e. the
-- formal package declaration node itself).
-- There is no explicit node for a formal package association. All of
-- them are represented either by a generic association, possibly with
-- Box_Present, or by an N_Others_Choice.
---------------------------------
-- 13.1 Representation clause --
---------------------------------
-- REPRESENTATION_CLAUSE ::=
-- ATTRIBUTE_DEFINITION_CLAUSE
-- | ENUMERATION_REPRESENTATION_CLAUSE
-- | RECORD_REPRESENTATION_CLAUSE
-- | AT_CLAUSE
----------------------
-- 13.1 Local Name --
----------------------
-- LOCAL_NAME :=
-- DIRECT_NAME
-- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
-- | library_unit_NAME
-- The construct DIRECT_NAME'ATTRIBUTE_DESIGNATOR appears in the tree
-- as an attribute reference, which has essentially the same form.
---------------------------------------
-- 13.3 Attribute definition clause --
---------------------------------------
-- ATTRIBUTE_DEFINITION_CLAUSE ::=
-- for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use EXPRESSION;
-- | for LOCAL_NAME'ATTRIBUTE_DESIGNATOR use NAME;
-- In Ada 83, the expression must be a simple expression and the
-- local name must be a direct name.
-- Note: the only attribute definition clause that is processed by
-- gigi is an address clause. For all other cases, the information
-- is extracted by the front end and either results in setting entity
-- information, e.g. Esize for the Size clause, or in appropriate
-- expansion actions (e.g. in the case of Storage_Size).
-- For an address clause, Gigi constructs the appropriate addressing
-- code. It also ensures that no aliasing optimizations are made
-- for the object for which the address clause appears.
-- Note: for an address clause used to achieve an overlay:
-- A : Integer;
-- B : Integer;
-- for B'Address use A'Address;
-- the above rule means that Gigi will ensure that no optimizations
-- will be made for B that would violate the implementation advice
-- of RM 13.3(19). However, this advice applies only to B and not
-- to A, which seems unfortunate. The GNAT front end will mark the
-- object A as volatile to also prevent unwanted optimization
-- assumptions based on no aliasing being made for B.
-- N_Attribute_Definition_Clause
-- Sloc points to FOR
-- Name (Node2) the local name
-- Chars (Name1) the identifier name from the attribute designator
-- Expression (Node3) the expression or name
-- Entity (Node4-Sem)
-- Next_Rep_Item (Node5-Sem)
-- From_At_Mod (Flag4-Sem)
-- Check_Address_Alignment (Flag11-Sem)
-- From_Aspect_Specification (Flag13-Sem)
-- Is_Delayed_Aspect (Flag14-Sem)
-- Address_Warning_Posted (Flag18-Sem)
-- Note: if From_Aspect_Specification is set, then Sloc points to the
-- aspect name, and Entity is resolved already to reference the entity
-- to which the aspect applies.
-----------------------------------
-- 13.3.1 Aspect Specifications --
-----------------------------------
-- We modify the RM grammar here, the RM grammar is:
-- ASPECT_SPECIFICATION ::=
-- with ASPECT_MARK [=> ASPECT_DEFINITION] {,
-- ASPECT_MARK [=> ASPECT_DEFINITION] }
-- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
-- ASPECT_DEFINITION ::= NAME | EXPRESSION
-- That's inconvenient, since there is no non-terminal name for a single
-- entry in the list of aspects. So we use this grammar instead:
-- ASPECT_SPECIFICATIONS ::=
-- with ASPECT_SPECIFICATION {, ASPECT_SPECIFICATION}
-- ASPECT_SPECIFICATION =>
-- ASPECT_MARK [=> ASPECT_DEFINITION]
-- ASPECT_MARK ::= aspect_IDENTIFIER['Class]
-- ASPECT_DEFINITION ::= NAME | EXPRESSION
-- See separate package Aspects for details on the incorporation of
-- these nodes into the tree, and how aspect specifications for a given
-- declaration node are associated with that node.
-- N_Aspect_Specification
-- Sloc points to aspect identifier
-- Identifier (Node1) aspect identifier
-- Aspect_Rep_Item (Node2-Sem)
-- Expression (Node3) Aspect_Definition (set to Empty if none)
-- Entity (Node4-Sem) entity to which the aspect applies
-- Class_Present (Flag6) Set if 'Class present
-- Next_Rep_Item (Node5-Sem)
-- Split_PPC (Flag17) Set if split pre/post attribute
-- Is_Boolean_Aspect (Flag16-Sem)
-- Is_Checked (Flag11-Sem)
-- Is_Delayed_Aspect (Flag14-Sem)
-- Is_Disabled (Flag15-Sem)
-- Is_Ignored (Flag9-Sem)
-- Note: Aspect_Specification is an Ada 2012 feature
-- Note: The Identifier serves to identify the aspect involved (it
-- is the aspect whose name corresponds to the Chars field). This
-- means that the other fields of this identifier are unused, and
-- in particular we use the Entity field of this identifier to save
-- a copy of the expression for visibility analysis, see spec of
-- Sem_Ch13 for full details of this usage.
-- In the case of aspects of the form xxx'Class, the aspect identifier
-- is for xxx, and Class_Present is set to True.
-- Note: When a Pre or Post aspect specification is processed, it is
-- broken into AND THEN sections. The left most section has Split_PPC
-- set to False, indicating that it is the original specification (e.g.
-- for posting errors). For the other sections, Split_PPC is set True.
---------------------------------------------
-- 13.4 Enumeration representation clause --
---------------------------------------------
-- ENUMERATION_REPRESENTATION_CLAUSE ::=
-- for first_subtype_LOCAL_NAME use ENUMERATION_AGGREGATE;
-- In Ada 83, the name must be a direct name
-- N_Enumeration_Representation_Clause
-- Sloc points to FOR
-- Identifier (Node1) direct name
-- Array_Aggregate (Node3)
-- Next_Rep_Item (Node5-Sem)
---------------------------------
-- 13.4 Enumeration aggregate --
---------------------------------
-- ENUMERATION_AGGREGATE ::= ARRAY_AGGREGATE
------------------------------------------
-- 13.5.1 Record representation clause --
------------------------------------------
-- RECORD_REPRESENTATION_CLAUSE ::=
-- for first_subtype_LOCAL_NAME use
-- record [MOD_CLAUSE]
-- {COMPONENT_CLAUSE}
-- end record;
-- Gigi restriction: Mod_Clause is always Empty (if present it is
-- replaced by a corresponding Alignment attribute definition clause).
-- Note: Component_Clauses can include pragmas
-- N_Record_Representation_Clause
-- Sloc points to FOR
-- Identifier (Node1) direct name
-- Mod_Clause (Node2) (set to Empty if no mod clause present)
-- Component_Clauses (List3)
-- Next_Rep_Item (Node5-Sem)
------------------------------
-- 13.5.1 Component clause --
------------------------------
-- COMPONENT_CLAUSE ::=
-- component_LOCAL_NAME at POSITION
-- range FIRST_BIT .. LAST_BIT;
-- N_Component_Clause
-- Sloc points to AT
-- Component_Name (Node1) points to Name or Attribute_Reference
-- Position (Node2)
-- First_Bit (Node3)
-- Last_Bit (Node4)
----------------------
-- 13.5.1 Position --
----------------------
-- POSITION ::= static_EXPRESSION
-----------------------
-- 13.5.1 First_Bit --
-----------------------
-- FIRST_BIT ::= static_SIMPLE_EXPRESSION
----------------------
-- 13.5.1 Last_Bit --
----------------------
-- LAST_BIT ::= static_SIMPLE_EXPRESSION
--------------------------
-- 13.8 Code statement --
--------------------------
-- CODE_STATEMENT ::= QUALIFIED_EXPRESSION;
-- Note: in GNAT, the qualified expression has the form
-- Asm_Insn'(Asm (...));
-- See package System.Machine_Code in file s-maccod.ads for details on
-- the allowed parameters to Asm. There are two ways this node can
-- arise, as a code statement, in which case the expression is the
-- qualified expression, or as a result of the expansion of an intrinsic
-- call to the Asm or Asm_Input procedure.
-- N_Code_Statement
-- Sloc points to first token of the expression
-- Expression (Node3)
-- Note: package Exp_Code contains an abstract functional interface
-- for use by Gigi in accessing the data from N_Code_Statement nodes.
------------------------
-- 13.12 Restriction --
------------------------
-- RESTRICTION ::=
-- restriction_IDENTIFIER
-- | restriction_parameter_IDENTIFIER => EXPRESSION
-- There is no explicit node for restrictions. Instead the restriction
-- appears in normal pragma syntax as a pragma argument association,
-- which has the same syntactic form.
--------------------------
-- B.2 Shift Operators --
--------------------------
-- Calls to the intrinsic shift functions are converted to one of
-- the following shift nodes, which have the form of normal binary
-- operator names. Note that for a given shift operation, one node
-- covers all possible types, as for normal operators.
-- Note: it is perfectly permissible for the expander to generate
-- shift operation nodes directly, in which case they will be analyzed
-- and parsed in the usual manner.
-- Sprint syntax: shift-function-name!(expr, count)
-- Note: the Left_Opnd field holds the first argument (the value to
-- be shifted). The Right_Opnd field holds the second argument (the
-- shift count). The Chars field is the name of the intrinsic function.
-- N_Op_Rotate_Left
-- Sloc points to the function name
-- plus fields for binary operator
-- plus fields for expression
-- Shift_Count_OK (Flag4-Sem)
-- N_Op_Rotate_Right
-- Sloc points to the function name
-- plus fields for binary operator
-- plus fields for expression
-- Shift_Count_OK (Flag4-Sem)
-- N_Op_Shift_Left
-- Sloc points to the function name
-- plus fields for binary operator
-- plus fields for expression
-- Shift_Count_OK (Flag4-Sem)
-- N_Op_Shift_Right_Arithmetic
-- Sloc points to the function name
-- plus fields for binary operator
-- plus fields for expression
-- Shift_Count_OK (Flag4-Sem)
-- N_Op_Shift_Right
-- Sloc points to the function name
-- plus fields for binary operator
-- plus fields for expression
-- Shift_Count_OK (Flag4-Sem)
--------------------------
-- Obsolescent Features --
--------------------------
-- The syntax descriptions and tree nodes for obsolescent features are
-- grouped together, corresponding to their location in appendix I in
-- the RM. However, parsing and semantic analysis for these constructs
-- is located in an appropriate chapter (see individual notes).
---------------------------
-- J.3 Delta Constraint --
---------------------------
-- Note: the parse routine for this construct is located in section
-- 3.5.9 of Par-Ch3, and semantic analysis is in Sem_Ch3, which is
-- where delta constraint logically belongs.
-- DELTA_CONSTRAINT ::= DELTA static_EXPRESSION [RANGE_CONSTRAINT]
-- N_Delta_Constraint
-- Sloc points to DELTA
-- Delta_Expression (Node3)
-- Range_Constraint (Node4) (set to Empty if not present)
--------------------
-- J.7 At Clause --
--------------------
-- AT_CLAUSE ::= for DIRECT_NAME use at EXPRESSION;
-- Note: the parse routine for this construct is located in Par-Ch13,
-- and the semantic analysis is in Sem_Ch13, where at clause logically
-- belongs if it were not obsolescent.
-- Note: in Ada 83 the expression must be a simple expression
-- Gigi restriction: This node never appears, it is rewritten as an
-- address attribute definition clause.
-- N_At_Clause
-- Sloc points to FOR
-- Identifier (Node1)
-- Expression (Node3)
---------------------
-- J.8 Mod clause --
---------------------
-- MOD_CLAUSE ::= at mod static_EXPRESSION;
-- Note: the parse routine for this construct is located in Par-Ch13,
-- and the semantic analysis is in Sem_Ch13, where mod clause logically
-- belongs if it were not obsolescent.
-- Note: in Ada 83, the expression must be a simple expression
-- Gigi restriction: this node never appears. It is replaced
-- by a corresponding Alignment attribute definition clause.
-- Note: pragmas can appear before and after the MOD_CLAUSE since
-- its name has "clause" in it. This is rather strange, but is quite
-- definitely specified. The pragmas before are collected in the
-- Pragmas_Before field of the mod clause node itself, and pragmas
-- after are simply swallowed up in the list of component clauses.
-- N_Mod_Clause
-- Sloc points to AT
-- Expression (Node3)
-- Pragmas_Before (List4) Pragmas before mod clause (No_List if none)
--------------------
-- Semantic Nodes --
--------------------
-- These semantic nodes are used to hold additional semantic information.
-- They are inserted into the tree as a result of semantic processing.
-- Although there are no legitimate source syntax constructions that
-- correspond directly to these nodes, we need a source syntax for the
-- reconstructed tree printed by Sprint, and the node descriptions here
-- show this syntax.
--------------
-- Contract --
--------------
-- This node is used to hold the various parts of an entry, subprogram
-- [body] or package [body] contract, in particular:
-- Abstract states declared by a package declaration
-- Contract cases that apply to a subprogram
-- Dependency relations of inputs and output of a subprogram
-- Global annotations classifying data as input or output
-- Initialization sequences for a package declaration
-- Pre- and postconditions that apply to a subprogram
-- The node appears in an entry and [generic] subprogram [body] entity.
-- Sprint syntax: as the node should not appear in the tree, but
-- only attached to an entry or [generic] subprogram
-- entity.
-- N_Contract
-- Sloc points to the subprogram's name
-- Pre_Post_Conditions (Node1) (set to Empty if none)
-- Contract_Test_Cases (Node2) (set to Empty if none)
-- Classifications (Node3) (set to Empty if none)
-- Pre_Post_Conditions contains a collection of pragmas that correspond
-- to pre- and postconditions associated with an entry or a subprogram
-- [body or stub]. The pragmas can either come from source or be the
-- byproduct of aspect expansion. Currently the following pragmas appear
-- in this list:
-- Post
-- Postcondition
-- Pre
-- Precondition
-- The ordering in the list is in LIFO fashion.
-- Note that there might be multiple preconditions or postconditions
-- in this list, either because they come from separate pragmas in the
-- source, or because a Pre (resp. Post) aspect specification has been
-- broken into AND THEN sections. See Split_PPC for details.
-- Contract_Test_Cases contains a collection of pragmas that correspond
-- to aspects/pragmas Contract_Cases and Test_Case. The ordering in the
-- list is in LIFO fashion.
-- Classifications contains pragmas that either declare, categorize or
-- establish dependencies between subprogram or package inputs and
-- outputs. Currently the following pragmas appear in this list:
-- Abstract_States
-- Async_Readers
-- Async_Writers
-- Depends
-- Effective_Reads
-- Effective_Writes
-- Global
-- Initial_Condition
-- Initializes
-- Refined_Depends
-- Refined_Global
-- Refined_States
-- The ordering is in LIFO fashion.
-------------------
-- Expanded_Name --
-------------------
-- The N_Expanded_Name node is used to represent a selected component
-- name that has been resolved to an expanded name. The semantic phase
-- replaces N_Selected_Component nodes that represent names by the use
-- of this node, leaving the N_Selected_Component node used only when
-- the prefix is a record or protected type.
-- The fields of the N_Expanded_Name node are layed out identically
-- to those of the N_Selected_Component node, allowing conversion of
-- an expanded name node to a selected component node to be done
-- easily, see Sinfo.CN.Change_Selected_Component_To_Expanded_Name.
-- There is no special sprint syntax for an expanded name
-- N_Expanded_Name
-- Sloc points to the period
-- Chars (Name1) copy of Chars field of selector name
-- Prefix (Node3)
-- Selector_Name (Node2)
-- Entity (Node4-Sem)
-- Associated_Node (Node4-Sem)
-- Has_Private_View (Flag11-Sem) set in generic units.
-- Redundant_Use (Flag13-Sem)
-- Atomic_Sync_Required (Flag14-Sem)
-- plus fields for expression
-----------------------------
-- Expression with Actions --
-----------------------------
-- This node is created by the analyzer/expander to handle some
-- expansion cases, notably short circuit forms where there are
-- actions associated with the right-hand side operand.
-- The N_Expression_With_Actions node represents an expression with
-- an associated set of actions (which are executable statements and
-- declarations, as might occur in a handled statement sequence).
-- The required semantics is that the set of actions is executed in
-- the order in which it appears just before the expression is
-- evaluated (and these actions must only be executed if the value
-- of the expression is evaluated). The node is considered to be
-- a subexpression, whose value is the value of the Expression after
-- executing all the actions.
-- If the actions contain declarations, then these declarations may
-- be referenced within the expression. However note that there is
-- no proper scope associated with the expression-with-action, so the
-- back-end will elaborate them in the context of the enclosing scope.
-- Sprint syntax: do
-- action;
-- action;
-- ...
-- action;
-- in expression end
-- N_Expression_With_Actions
-- Actions (List1)
-- Expression (Node3)
-- plus fields for expression
-- Note: the actions list is always non-null, since we would never have
-- created this node if there weren't some actions.
-- Note: Expression may be a Null_Statement, in which case the
-- N_Expression_With_Actions has type Standard_Void_Type. However some
-- backends do not support such expression-with-actions occurring
-- outside of a proper (non-void) expression, so this should just be
-- used as an intermediate representation within the front-end. Also
-- note that this is really an irregularity (expressions and statements
-- are not interchangeable, and in particular an N_Null_Statement is
-- not a proper expression), and in the long term all cases of this
-- idiom should instead use a new node kind N_Compound_Statement.
--------------------
-- Free Statement --
--------------------
-- The N_Free_Statement node is generated as a result of a call to an
-- instantiation of Unchecked_Deallocation. The instantiation of this
-- generic is handled specially and generates this node directly.
-- Sprint syntax: free expression
-- N_Free_Statement
-- Sloc is copied from the unchecked deallocation call
-- Expression (Node3) argument to unchecked deallocation call
-- Storage_Pool (Node1-Sem)
-- Procedure_To_Call (Node2-Sem)
-- Actual_Designated_Subtype (Node4-Sem)
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the FREE keyword in the Sprint file output.
-------------------
-- Freeze Entity --
-------------------
-- This node marks the point in a declarative part at which an entity
-- declared therein becomes frozen. The expander places initialization
-- procedures for types at those points. Gigi uses the freezing point
-- to elaborate entities that may depend on previous private types.
-- See the section in Einfo "Delayed Freezing and Elaboration" for
-- a full description of the use of this node.
-- The Entity field points back to the entity for the type (whose
-- Freeze_Node field points back to this freeze node).
-- The Actions field contains a list of declarations and statements
-- generated by the expander which are associated with the freeze
-- node, and are elaborated as though the freeze node were replaced
-- by this sequence of actions.
-- Note: the Sloc field in the freeze node references a construct
-- associated with the freezing point. This is used for posting
-- messages in some error/warning situations, e.g. the case where
-- a primitive operation of a tagged type is declared too late.
-- Sprint syntax: freeze entity-name [
-- freeze actions
-- ]
-- N_Freeze_Entity
-- Sloc points near freeze point (see above special note)
-- Entity (Node4-Sem)
-- Access_Types_To_Process (Elist2-Sem) (set to No_Elist if none)
-- TSS_Elist (Elist3-Sem) (set to No_Elist if no associated TSS's)
-- Actions (List1) (set to No_List if no freeze actions)
-- First_Subtype_Link (Node5-Sem) (set to Empty if no link)
-- The Actions field holds actions associated with the freeze. These
-- actions are elaborated at the point where the type is frozen.
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the FREEZE keyword in the Sprint file output.
---------------------------
-- Freeze_Generic_Entity --
---------------------------
-- The freeze point of an entity indicates the point at which the
-- information needed to generate code for the entity is complete.
-- The freeze node for an entity triggers expander activities, such as
-- build initialization procedures, and backend activities, such as
-- completing the elaboration of packages.
-- For entities declared within a generic unit, for which no code is
-- generated, the freeze point is not equally meaningful. However, in
-- Ada 2012 several semantic checks on declarations must be delayed to
-- the freeze point, and we need to include such a mark in the tree to
-- trigger these checks. The Freeze_Generic_Entity node plays no other
-- role, and is ignored by the expander and the back-end.
-- Sprint syntax: freeze_generic entity-name
-- N_Freeze_Generic_Entity
-- Sloc points near freeze point
-- Entity (Node4-Sem)
--------------------------------
-- Implicit Label Declaration --
--------------------------------
-- An implicit label declaration is created for every occurrence of a
-- label on a statement or a label on a block or loop. It is chained
-- in the declarations of the innermost enclosing block as specified
-- in RM section 5.1 (3).
-- The Defining_Identifier is the actual identifier for the statement
-- identifier. Note that the occurrence of the label is a reference, NOT
-- the defining occurrence. The defining occurrence occurs at the head
-- of the innermost enclosing block, and is represented by this node.
-- Note: from the grammar, this might better be called an implicit
-- statement identifier declaration, but the term we choose seems
-- friendlier, since at least informally statement identifiers are
-- called labels in both cases (i.e. when used in labels, and when
-- used as the identifiers of blocks and loops).
-- Note: although this is logically a semantic node, since it does not
-- correspond directly to a source syntax construction, these nodes are
-- actually created by the parser in a post pass done just after parsing
-- is complete, before semantic analysis is started (see Par.Labl).
-- Sprint syntax: labelname : label;
-- N_Implicit_Label_Declaration
-- Sloc points to the << token for a statement identifier, or to the
-- LOOP, DECLARE, or BEGIN token for a loop or block identifier
-- Defining_Identifier (Node1)
-- Label_Construct (Node2-Sem)
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the label name in the generated declaration.
---------------------
-- Itype_Reference --
---------------------
-- This node is used to create a reference to an Itype. The only purpose
-- is to make sure the Itype is defined if this is the first reference.
-- A typical use of this node is when an Itype is to be referenced in
-- two branches of an IF statement. In this case it is important that
-- the first use of the Itype not be inside the conditional, since then
-- it might not be defined if the other branch of the IF is taken, in
-- the case where the definition generates elaboration code.
-- The Itype field points to the referenced Itype
-- Sprint syntax: reference itype-name
-- N_Itype_Reference
-- Sloc points to the node generating the reference
-- Itype (Node1-Sem)
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the REFERENCE keyword in the file output.
---------------------
-- Raise_xxx_Error --
---------------------
-- One of these nodes is created during semantic analysis to replace
-- a node for an expression that is determined to definitely raise
-- the corresponding exception.
-- The N_Raise_xxx_Error node may also stand alone in place
-- of a declaration or statement, in which case it simply causes
-- the exception to be raised (i.e. it is equivalent to a raise
-- statement that raises the corresponding exception). This use
-- is distinguished by the fact that the Etype in this case is
-- Standard_Void_Type; in the subexpression case, the Etype is the
-- same as the type of the subexpression which it replaces.
-- If Condition is empty, then the raise is unconditional. If the
-- Condition field is non-empty, it is a boolean expression which
-- is first evaluated, and the exception is raised only if the
-- value of the expression is True. In the unconditional case, the
-- creation of this node is usually accompanied by a warning message
-- error. The creation of this node will usually be accompanied by a
-- message (unless it appears within the right operand of a short
-- circuit form whose left argument is static and decisively
-- eliminates elaboration of the raise operation. The condition field
-- can ONLY be present when the node is used as a statement form, it
-- may NOT be present in the case where the node appears within an
-- expression.
-- The exception is generated with a message that contains the
-- file name and line number, and then appended text. The Reason
-- code shows the text to be added. The Reason code is an element
-- of the type Types.RT_Exception_Code, and indicates both the
-- message to be added, and the exception to be raised (which must
-- match the node type). The value is stored by storing a Uint which
-- is the Pos value of the enumeration element in this type.
-- Gigi restriction: This expander ensures that the type of the
-- Condition field is always Standard.Boolean, even if the type
-- in the source is some non-standard boolean type.
-- Sprint syntax: [xxx_error "msg"]
-- or: [xxx_error when condition "msg"]
-- N_Raise_Constraint_Error
-- Sloc references related construct
-- Condition (Node1) (set to Empty if no condition)
-- Reason (Uint3)
-- plus fields for expression
-- N_Raise_Program_Error
-- Sloc references related construct
-- Condition (Node1) (set to Empty if no condition)
-- Reason (Uint3)
-- plus fields for expression
-- N_Raise_Storage_Error
-- Sloc references related construct
-- Condition (Node1) (set to Empty if no condition)
-- Reason (Uint3)
-- plus fields for expression
-- Note: Sloc is copied from the expression generating the exception.
-- In the case where a debug source file is generated, the Sloc for
-- this node points to the left bracket in the Sprint file output.
-- Note: the back end may be required to translate these nodes into
-- appropriate goto statements. See description of N_Push/Pop_xxx_Label.
---------------------------------------------
-- Optimization of Exception Raise to Goto --
---------------------------------------------
-- In some cases, the front end will determine that any exception raised
-- by the back end for a certain exception should be transformed into a
-- goto statement.
-- There are three kinds of exceptions raised by the back end (note that
-- for this purpose we consider gigi to be part of the back end in the
-- gcc case):
-- 1. Exceptions resulting from N_Raise_xxx_Error nodes
-- 2. Exceptions from checks triggered by Do_xxx_Check flags
-- 3. Other cases not specifically marked by the front end
-- Normally all such exceptions are translated into calls to the proper
-- Rcheck_xx procedure, where xx encodes both the exception to be raised
-- and the exception message.
-- The front end may determine that for a particular sequence of code,
-- exceptions in any of these three categories for a particular builtin
-- exception should result in a goto, rather than a call to Rcheck_xx.
-- The exact sequence to be generated is:
-- Local_Raise (exception'Identity);
-- goto Label
-- The front end marks such a sequence of code by bracketing it with
-- push and pop nodes:
-- N_Push_xxx_Label (referencing the label)
-- ...
-- (code where transformation is expected for exception xxx)
-- ...
-- N_Pop_xxx_Label
-- The use of push/pop reflects the fact that such regions can properly
-- nest, and one special case is a subregion in which no transformation
-- is allowed. Such a region is marked by a N_Push_xxx_Label node whose
-- Exception_Label field is Empty.
-- N_Push_Constraint_Error_Label
-- Sloc references first statement in region covered
-- Exception_Label (Node5-Sem)
-- N_Push_Program_Error_Label
-- Sloc references first statement in region covered
-- Exception_Label (Node5-Sem)
-- N_Push_Storage_Error_Label
-- Sloc references first statement in region covered
-- Exception_Label (Node5-Sem)
-- N_Pop_Constraint_Error_Label
-- Sloc references last statement in region covered
-- N_Pop_Program_Error_Label
-- Sloc references last statement in region covered
-- N_Pop_Storage_Error_Label
-- Sloc references last statement in region covered
---------------
-- Reference --
---------------
-- For a number of purposes, we need to construct references to objects.
-- These references are subsequently treated as normal access values.
-- An example is the construction of the parameter block passed to a
-- task entry. The N_Reference node is provided for this purpose. It is
-- similar in effect to the use of the Unrestricted_Access attribute,
-- and like Unrestricted_Access can be applied to objects which would
-- not be valid prefixes for the Unchecked_Access attribute (e.g.
-- objects which are not aliased, and slices). In addition it can be
-- applied to composite type values as well as objects, including string
-- values and aggregates.
-- Note: we use the Prefix field for this expression so that the
-- resulting node can be treated using common code with the attribute
-- nodes for the 'Access and related attributes. Logically it would make
-- more sense to call it an Expression field, but then we would have to
-- special case the treatment of the N_Reference node.
-- Note: evaluating a N_Reference node is guaranteed to yield a non-null
-- value at run time. Therefore, it is valid to set Is_Known_Non_Null on
-- a temporary initialized to a N_Reference node in order to eliminate
-- superfluous access checks.
-- Sprint syntax: prefix'reference
-- N_Reference
-- Sloc is copied from the expression
-- Prefix (Node3)
-- plus fields for expression
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the quote in the Sprint file output.
-----------------
-- SCIL Nodes --
-----------------
-- SCIL nodes are special nodes added to the tree when the CodePeer
-- mode is active. They help the CodePeer backend to locate nodes that
-- require special processing. They are only generated if SCIL
-- generation is enabled. A standard tree-walk will not encounter
-- these nodes even if they are present; these nodes are only
-- accessible via the function SCIL_LL.Get_SCIL_Node.
-- N_SCIL_Dispatch_Table_Tag_Init
-- Sloc references a node for a tag initialization
-- SCIL_Entity (Node4-Sem)
--
-- An N_SCIL_Dispatch_Table_Tag_Init node may be associated (via
-- Get_SCIL_Node) with the N_Object_Declaration node corresponding to
-- the declaration of the dispatch table for a tagged type.
-- N_SCIL_Dispatching_Call
-- Sloc references the node of a dispatching call
-- SCIL_Target_Prim (Node2-Sem)
-- SCIL_Entity (Node4-Sem)
-- SCIL_Controlling_Tag (Node5-Sem)
--
-- An N_Scil_Dispatching call node may be associated (via Get_SCIL_Node)
-- with the N_Procedure_Call or N_Function_Call node (or a rewriting
-- thereof) corresponding to a dispatching call.
-- N_SCIL_Membership_Test
-- Sloc references the node of a membership test
-- SCIL_Tag_Value (Node5-Sem)
-- SCIL_Entity (Node4-Sem)
--
-- An N_Scil_Membership_Test node may be associated (via Get_SCIL_Node)
-- with the N_In node (or a rewriting thereof) corresponding to a
-- classwide membership test.
---------------------
-- Subprogram_Info --
---------------------
-- This node generates the appropriate Subprogram_Info value for a
-- given procedure. See Ada.Exceptions for further details
-- Sprint syntax: subprog'subprogram_info
-- N_Subprogram_Info
-- Sloc points to the entity for the procedure
-- Identifier (Node1) identifier referencing the procedure
-- Etype (Node5-Sem) type (always set to Ada.Exceptions.Code_Loc)
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the quote in the Sprint file output.
--------------------------
-- Unchecked Expression --
--------------------------
-- An unchecked expression is one that must be analyzed and resolved
-- with all checks off, regardless of the current setting of scope
-- suppress flags.
-- Sprint syntax: `(expression)
-- Note: this node is always removed from the tree (and replaced by
-- its constituent expression) on completion of analysis, so it only
-- appears in intermediate trees, and will never be seen by Gigi.
-- N_Unchecked_Expression
-- Sloc is a copy of the Sloc of the expression
-- Expression (Node3)
-- plus fields for expression
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the back quote in the Sprint file output.
-------------------------------
-- Unchecked Type Conversion --
-------------------------------
-- An unchecked type conversion node represents the semantic action
-- corresponding to a call to an instantiation of Unchecked_Conversion.
-- It is generated as a result of actual use of Unchecked_Conversion
-- and also the expander generates unchecked type conversion nodes
-- directly for expansion of complex semantic actions.
-- Note: an unchecked type conversion is a variable as far as the
-- semantics are concerned, which is convenient for the expander.
-- This does not change what Ada source programs are legal, since
-- clearly a function call to an instantiation of Unchecked_Conversion
-- is not a variable in any case.
-- Sprint syntax: subtype-mark!(expression)
-- N_Unchecked_Type_Conversion
-- Sloc points to related node in source
-- Subtype_Mark (Node4)
-- Expression (Node3)
-- Kill_Range_Check (Flag11-Sem)
-- No_Truncation (Flag17-Sem)
-- plus fields for expression
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the exclamation in the Sprint file output.
-----------------------------------
-- Validate_Unchecked_Conversion --
-----------------------------------
-- The front end does most of the validation of unchecked conversion,
-- including checking sizes (this is done after the back end is called
-- to take advantage of back-annotation of calculated sizes).
-- The front end also deals with specific cases that are not allowed
-- e.g. involving unconstrained array types.
-- For the case of the standard gigi backend, this means that all
-- checks are done in the front-end.
-- However, in the case of specialized back-ends, notably the JVM
-- backend for JGNAT, additional requirements and restrictions apply
-- to unchecked conversion, and these are most conveniently performed
-- in the specialized back-end.
-- To accommodate this requirement, for such back ends, the following
-- special node is generated recording an unchecked conversion that
-- needs to be validated. The back end should post an appropriate
-- error message if the unchecked conversion is invalid or warrants
-- a special warning message.
-- Source_Type and Target_Type point to the entities for the two
-- types involved in the unchecked conversion instantiation that
-- is to be validated.
-- Sprint syntax: validate Unchecked_Conversion (source, target);
-- N_Validate_Unchecked_Conversion
-- Sloc points to instantiation (location for warning message)
-- Source_Type (Node1-Sem)
-- Target_Type (Node2-Sem)
-- Note: in the case where a debug source file is generated, the Sloc
-- for this node points to the VALIDATE keyword in the file output.
-----------
-- Empty --
-----------
-- Used as the contents of the Nkind field of the dummy Empty node
-- and in some other situations to indicate an uninitialized value.
-- N_Empty
-- Chars (Name1) is set to No_Name
-----------
-- Error --
-----------
-- Used as the contents of the Nkind field of the dummy Error node.
-- Has an Etype field, which gets set to Any_Type later on, to help
-- error recovery (Error_Posted is also set in the Error node).
-- N_Error
-- Chars (Name1) is set to Error_Name
-- Etype (Node5-Sem)
--------------------------
-- Node Type Definition --
--------------------------
-- The following is the definition of the Node_Kind type. As previously
-- discussed, this is separated off to allow rearrangement of the order to
-- facilitate definition of subtype ranges. The comments show the subtype
-- classes which apply to each set of node kinds. The first entry in the
-- comment characterizes the following list of nodes.
type Node_Kind is (
N_Unused_At_Start,
-- N_Representation_Clause
N_At_Clause,
N_Component_Clause,
N_Enumeration_Representation_Clause,
N_Mod_Clause,
N_Record_Representation_Clause,
-- N_Representation_Clause, N_Has_Chars
N_Attribute_Definition_Clause,
-- N_Has_Chars
N_Empty,
N_Pragma_Argument_Association,
-- N_Has_Etype, N_Has_Chars
-- Note: of course N_Error does not really have Etype or Chars fields,
-- and any attempt to access these fields in N_Error will cause an
-- error, but historically this always has been positioned so that an
-- "in N_Has_Chars" or "in N_Has_Etype" test yields true for N_Error.
-- Most likely this makes coding easier somewhere but still seems
-- undesirable. To be investigated some time ???
N_Error,
-- N_Entity, N_Has_Etype, N_Has_Chars
N_Defining_Character_Literal,
N_Defining_Identifier,
N_Defining_Operator_Symbol,
-- N_Subexpr, N_Has_Etype, N_Has_Chars, N_Has_Entity
N_Expanded_Name,
-- N_Direct_Name, N_Subexpr, N_Has_Etype,
-- N_Has_Chars, N_Has_Entity
N_Identifier,
N_Operator_Symbol,
-- N_Direct_Name, N_Subexpr, N_Has_Etype,
-- N_Has_Chars, N_Has_Entity
N_Character_Literal,
-- N_Binary_Op, N_Op, N_Subexpr,
-- N_Has_Etype, N_Has_Chars, N_Has_Entity
N_Op_Add,
N_Op_Concat,
N_Op_Expon,
N_Op_Subtract,
-- N_Binary_Op, N_Op, N_Subexpr, N_Has_Treat_Fixed_As_Integer
-- N_Has_Etype, N_Has_Chars, N_Has_Entity, N_Multiplying_Operator
N_Op_Divide,
N_Op_Mod,
N_Op_Multiply,
N_Op_Rem,
-- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
-- N_Has_Entity, N_Has_Chars, N_Op_Boolean
N_Op_And,
-- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
-- N_Has_Entity, N_Has_Chars, N_Op_Boolean, N_Op_Compare
N_Op_Eq,
N_Op_Ge,
N_Op_Gt,
N_Op_Le,
N_Op_Lt,
N_Op_Ne,
-- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype
-- N_Has_Entity, N_Has_Chars, N_Op_Boolean
N_Op_Or,
N_Op_Xor,
-- N_Binary_Op, N_Op, N_Subexpr, N_Has_Etype,
-- N_Op_Shift, N_Has_Chars, N_Has_Entity
N_Op_Rotate_Left,
N_Op_Rotate_Right,
N_Op_Shift_Left,
N_Op_Shift_Right,
N_Op_Shift_Right_Arithmetic,
-- N_Unary_Op, N_Op, N_Subexpr, N_Has_Etype,
-- N_Has_Chars, N_Has_Entity
N_Op_Abs,
N_Op_Minus,
N_Op_Not,
N_Op_Plus,
-- N_Subexpr, N_Has_Etype, N_Has_Entity
N_Attribute_Reference,
-- N_Subexpr, N_Has_Etype, N_Membership_Test
N_In,
N_Not_In,
-- N_Subexpr, N_Has_Etype, N_Short_Circuit
N_And_Then,
N_Or_Else,
-- N_Subexpr, N_Has_Etype, N_Subprogram_Call
N_Function_Call,
N_Procedure_Call_Statement,
-- N_Subexpr, N_Has_Etype, N_Raise_xxx_Error
N_Raise_Constraint_Error,
N_Raise_Program_Error,
N_Raise_Storage_Error,
-- N_Subexpr, N_Has_Etype, N_Numeric_Or_String_Literal
N_Integer_Literal,
N_Real_Literal,
N_String_Literal,
-- N_Subexpr, N_Has_Etype
N_Explicit_Dereference,
N_Expression_With_Actions,
N_If_Expression,
N_Indexed_Component,
N_Null,
N_Qualified_Expression,
N_Quantified_Expression,
N_Aggregate,
N_Allocator,
N_Case_Expression,
N_Extension_Aggregate,
N_Raise_Expression,
N_Range,
N_Reference,
N_Selected_Component,
N_Slice,
N_Subprogram_Info,
N_Type_Conversion,
N_Unchecked_Expression,
N_Unchecked_Type_Conversion,
-- N_Has_Etype
N_Subtype_Indication,
-- N_Declaration
N_Component_Declaration,
N_Entry_Declaration,
N_Expression_Function,
N_Formal_Object_Declaration,
N_Formal_Type_Declaration,
N_Full_Type_Declaration,
N_Incomplete_Type_Declaration,
N_Iterator_Specification,
N_Loop_Parameter_Specification,
N_Object_Declaration,
N_Protected_Type_Declaration,
N_Private_Extension_Declaration,
N_Private_Type_Declaration,
N_Subtype_Declaration,
-- N_Subprogram_Specification, N_Declaration
N_Function_Specification,
N_Procedure_Specification,
-- N_Access_To_Subprogram_Definition
N_Access_Function_Definition,
N_Access_Procedure_Definition,
-- N_Later_Decl_Item
N_Task_Type_Declaration,
-- N_Body_Stub, N_Later_Decl_Item
N_Package_Body_Stub,
N_Protected_Body_Stub,
N_Subprogram_Body_Stub,
N_Task_Body_Stub,
-- N_Generic_Instantiation, N_Later_Decl_Item
-- N_Subprogram_Instantiation
N_Function_Instantiation,
N_Procedure_Instantiation,
-- N_Generic_Instantiation, N_Later_Decl_Item
N_Package_Instantiation,
-- N_Unit_Body, N_Later_Decl_Item, N_Proper_Body
N_Package_Body,
N_Subprogram_Body,
-- N_Later_Decl_Item, N_Proper_Body
N_Protected_Body,
N_Task_Body,
-- N_Later_Decl_Item
N_Implicit_Label_Declaration,
N_Package_Declaration,
N_Single_Task_Declaration,
N_Subprogram_Declaration,
N_Use_Package_Clause,
-- N_Generic_Declaration, N_Later_Decl_Item
N_Generic_Package_Declaration,
N_Generic_Subprogram_Declaration,
-- N_Array_Type_Definition
N_Constrained_Array_Definition,
N_Unconstrained_Array_Definition,
-- N_Renaming_Declaration
N_Exception_Renaming_Declaration,
N_Object_Renaming_Declaration,
N_Package_Renaming_Declaration,
N_Subprogram_Renaming_Declaration,
-- N_Generic_Renaming_Declaration, N_Renaming_Declaration
N_Generic_Function_Renaming_Declaration,
N_Generic_Package_Renaming_Declaration,
N_Generic_Procedure_Renaming_Declaration,
-- N_Statement_Other_Than_Procedure_Call
N_Abort_Statement,
N_Accept_Statement,
N_Assignment_Statement,
N_Asynchronous_Select,
N_Block_Statement,
N_Case_Statement,
N_Code_Statement,
N_Conditional_Entry_Call,
-- N_Statement_Other_Than_Procedure_Call, N_Delay_Statement
N_Delay_Relative_Statement,
N_Delay_Until_Statement,
-- N_Statement_Other_Than_Procedure_Call
N_Entry_Call_Statement,
N_Free_Statement,
N_Goto_Statement,
N_Loop_Statement,
N_Null_Statement,
N_Raise_Statement,
N_Requeue_Statement,
N_Simple_Return_Statement,
N_Extended_Return_Statement,
N_Selective_Accept,
N_Timed_Entry_Call,
-- N_Statement_Other_Than_Procedure_Call, N_Has_Condition
N_Exit_Statement,
N_If_Statement,
-- N_Has_Condition
N_Accept_Alternative,
N_Delay_Alternative,
N_Elsif_Part,
N_Entry_Body_Formal_Part,
N_Iteration_Scheme,
N_Terminate_Alternative,
-- N_Formal_Subprogram_Declaration
N_Formal_Abstract_Subprogram_Declaration,
N_Formal_Concrete_Subprogram_Declaration,
-- N_Push_xxx_Label, N_Push_Pop_xxx_Label
N_Push_Constraint_Error_Label,
N_Push_Program_Error_Label,
N_Push_Storage_Error_Label,
-- N_Pop_xxx_Label, N_Push_Pop_xxx_Label
N_Pop_Constraint_Error_Label,
N_Pop_Program_Error_Label,
N_Pop_Storage_Error_Label,
-- SCIL nodes
N_SCIL_Dispatch_Table_Tag_Init,
N_SCIL_Dispatching_Call,
N_SCIL_Membership_Test,
-- Other nodes (not part of any subtype class)
N_Abortable_Part,
N_Abstract_Subprogram_Declaration,
N_Access_Definition,
N_Access_To_Object_Definition,
N_Aspect_Specification,
N_Case_Expression_Alternative,
N_Case_Statement_Alternative,
N_Compilation_Unit,
N_Compilation_Unit_Aux,
N_Component_Association,
N_Component_Definition,
N_Component_List,
N_Contract,
N_Derived_Type_Definition,
N_Decimal_Fixed_Point_Definition,
N_Defining_Program_Unit_Name,
N_Delta_Constraint,
N_Designator,
N_Digits_Constraint,
N_Discriminant_Association,
N_Discriminant_Specification,
N_Enumeration_Type_Definition,
N_Entry_Body,
N_Entry_Call_Alternative,
N_Entry_Index_Specification,
N_Exception_Declaration,
N_Exception_Handler,
N_Floating_Point_Definition,
N_Formal_Decimal_Fixed_Point_Definition,
N_Formal_Derived_Type_Definition,
N_Formal_Discrete_Type_Definition,
N_Formal_Floating_Point_Definition,
N_Formal_Modular_Type_Definition,
N_Formal_Ordinary_Fixed_Point_Definition,
N_Formal_Package_Declaration,
N_Formal_Private_Type_Definition,
N_Formal_Incomplete_Type_Definition,
N_Formal_Signed_Integer_Type_Definition,
N_Freeze_Entity,
N_Freeze_Generic_Entity,
N_Generic_Association,
N_Handled_Sequence_Of_Statements,
N_Index_Or_Discriminant_Constraint,
N_Itype_Reference,
N_Label,
N_Modular_Type_Definition,
N_Number_Declaration,
N_Ordinary_Fixed_Point_Definition,
N_Others_Choice,
N_Package_Specification,
N_Parameter_Association,
N_Parameter_Specification,
N_Pragma,
N_Protected_Definition,
N_Range_Constraint,
N_Real_Range_Specification,
N_Record_Definition,
N_Signed_Integer_Type_Definition,
N_Single_Protected_Declaration,
N_Subunit,
N_Task_Definition,
N_Triggering_Alternative,
N_Use_Type_Clause,
N_Validate_Unchecked_Conversion,
N_Variant,
N_Variant_Part,
N_With_Clause,
N_Unused_At_End);
for Node_Kind'Size use 8;
-- The data structures in Atree assume this!
----------------------------
-- Node Class Definitions --
----------------------------
subtype N_Access_To_Subprogram_Definition is Node_Kind range
N_Access_Function_Definition ..
N_Access_Procedure_Definition;
subtype N_Array_Type_Definition is Node_Kind range
N_Constrained_Array_Definition ..
N_Unconstrained_Array_Definition;
subtype N_Binary_Op is Node_Kind range
N_Op_Add ..
N_Op_Shift_Right_Arithmetic;
subtype N_Body_Stub is Node_Kind range
N_Package_Body_Stub ..
N_Task_Body_Stub;
subtype N_Declaration is Node_Kind range
N_Component_Declaration ..
N_Procedure_Specification;
-- Note: this includes all constructs normally thought of as declarations
-- except those which are separately grouped as later declarations.
subtype N_Delay_Statement is Node_Kind range
N_Delay_Relative_Statement ..
N_Delay_Until_Statement;
subtype N_Direct_Name is Node_Kind range
N_Identifier ..
N_Character_Literal;
subtype N_Entity is Node_Kind range
N_Defining_Character_Literal ..
N_Defining_Operator_Symbol;
subtype N_Formal_Subprogram_Declaration is Node_Kind range
N_Formal_Abstract_Subprogram_Declaration ..
N_Formal_Concrete_Subprogram_Declaration;
subtype N_Generic_Declaration is Node_Kind range
N_Generic_Package_Declaration ..
N_Generic_Subprogram_Declaration;
subtype N_Generic_Instantiation is Node_Kind range
N_Function_Instantiation ..
N_Package_Instantiation;
subtype N_Generic_Renaming_Declaration is Node_Kind range
N_Generic_Function_Renaming_Declaration ..
N_Generic_Procedure_Renaming_Declaration;
subtype N_Has_Chars is Node_Kind range
N_Attribute_Definition_Clause ..
N_Op_Plus;
subtype N_Has_Entity is Node_Kind range
N_Expanded_Name ..
N_Attribute_Reference;
-- Nodes that have Entity fields
-- Warning: DOES NOT INCLUDE N_Freeze_Entity, N_Freeze_Generic_Entity,
-- N_Aspect_Specification, or N_Attribute_Definition_Clause.
subtype N_Has_Etype is Node_Kind range
N_Error ..
N_Subtype_Indication;
subtype N_Has_Treat_Fixed_As_Integer is Node_Kind range
N_Op_Divide ..
N_Op_Rem;
subtype N_Multiplying_Operator is Node_Kind range
N_Op_Divide ..
N_Op_Rem;
subtype N_Later_Decl_Item is Node_Kind range
N_Task_Type_Declaration ..
N_Generic_Subprogram_Declaration;
-- Note: this is Ada 83 relevant only (see Ada 83 RM 3.9 (2)) and includes
-- only those items which can appear as later declarative items. This also
-- includes N_Implicit_Label_Declaration which is not specifically in the
-- grammar but may appear as a valid later declarative items. It does NOT
-- include N_Pragma which can also appear among later declarative items.
-- It does however include N_Protected_Body, which is a bit peculiar, but
-- harmless since this cannot appear in Ada 83 mode anyway.
subtype N_Membership_Test is Node_Kind range
N_In ..
N_Not_In;
subtype N_Numeric_Or_String_Literal is Node_Kind range
N_Integer_Literal ..
N_String_Literal;
subtype N_Op is Node_Kind range
N_Op_Add ..
N_Op_Plus;
subtype N_Op_Boolean is Node_Kind range
N_Op_And ..
N_Op_Xor;
-- Binary operators which take operands of a boolean type, and yield
-- a result of a boolean type.
subtype N_Op_Compare is Node_Kind range
N_Op_Eq ..
N_Op_Ne;
subtype N_Op_Shift is Node_Kind range
N_Op_Rotate_Left ..
N_Op_Shift_Right_Arithmetic;
subtype N_Proper_Body is Node_Kind range
N_Package_Body ..
N_Task_Body;
subtype N_Push_xxx_Label is Node_Kind range
N_Push_Constraint_Error_Label ..
N_Push_Storage_Error_Label;
subtype N_Pop_xxx_Label is Node_Kind range
N_Pop_Constraint_Error_Label ..
N_Pop_Storage_Error_Label;
subtype N_Push_Pop_xxx_Label is Node_Kind range
N_Push_Constraint_Error_Label ..
N_Pop_Storage_Error_Label;
subtype N_Raise_xxx_Error is Node_Kind range
N_Raise_Constraint_Error ..
N_Raise_Storage_Error;
subtype N_Renaming_Declaration is Node_Kind range
N_Exception_Renaming_Declaration ..
N_Generic_Procedure_Renaming_Declaration;
subtype N_Representation_Clause is Node_Kind range
N_At_Clause ..
N_Attribute_Definition_Clause;
subtype N_Short_Circuit is Node_Kind range
N_And_Then ..
N_Or_Else;
subtype N_SCIL_Node is Node_Kind range
N_SCIL_Dispatch_Table_Tag_Init ..
N_SCIL_Membership_Test;
subtype N_Statement_Other_Than_Procedure_Call is Node_Kind range
N_Abort_Statement ..
N_If_Statement;
-- Note that this includes all statement types except for the cases of the
-- N_Procedure_Call_Statement which is considered to be a subexpression
-- (since overloading is possible, so it needs to go through the normal
-- overloading resolution for expressions).
subtype N_Subprogram_Call is Node_Kind range
N_Function_Call ..
N_Procedure_Call_Statement;
subtype N_Subprogram_Instantiation is Node_Kind range
N_Function_Instantiation ..
N_Procedure_Instantiation;
subtype N_Has_Condition is Node_Kind range
N_Exit_Statement ..
N_Terminate_Alternative;
-- Nodes with condition fields (does not include N_Raise_xxx_Error)
subtype N_Subexpr is Node_Kind range
N_Expanded_Name ..
N_Unchecked_Type_Conversion;
-- Nodes with expression fields
subtype N_Subprogram_Specification is Node_Kind range
N_Function_Specification ..
N_Procedure_Specification;
subtype N_Unary_Op is Node_Kind range
N_Op_Abs ..
N_Op_Plus;
subtype N_Unit_Body is Node_Kind range
N_Package_Body ..
N_Subprogram_Body;
---------------------------
-- Node Access Functions --
---------------------------
-- The following functions return the contents of the indicated field of
-- the node referenced by the argument, which is a Node_Id. They provide
-- logical access to fields in the node which could be accessed using the
-- Atree.Unchecked_Access package, but the idea is always to use these
-- higher level routines which preserve strong typing. In debug mode,
-- these routines check that they are being applied to an appropriate
-- node, as well as checking that the node is in range.
function ABE_Is_Certain
(N : Node_Id) return Boolean; -- Flag18
function Abort_Present
(N : Node_Id) return Boolean; -- Flag15
function Abortable_Part
(N : Node_Id) return Node_Id; -- Node2
function Abstract_Present
(N : Node_Id) return Boolean; -- Flag4
function Accept_Handler_Records
(N : Node_Id) return List_Id; -- List5
function Accept_Statement
(N : Node_Id) return Node_Id; -- Node2
function Access_Definition
(N : Node_Id) return Node_Id; -- Node3
function Access_To_Subprogram_Definition
(N : Node_Id) return Node_Id; -- Node3
function Access_Types_To_Process
(N : Node_Id) return Elist_Id; -- Elist2
function Actions
(N : Node_Id) return List_Id; -- List1
function Activation_Chain_Entity
(N : Node_Id) return Node_Id; -- Node3
function Acts_As_Spec
(N : Node_Id) return Boolean; -- Flag4
function Actual_Designated_Subtype
(N : Node_Id) return Node_Id; -- Node4
function Address_Warning_Posted
(N : Node_Id) return Boolean; -- Flag18
function Aggregate_Bounds
(N : Node_Id) return Node_Id; -- Node3
function Aliased_Present
(N : Node_Id) return Boolean; -- Flag4
function All_Others
(N : Node_Id) return Boolean; -- Flag11
function All_Present
(N : Node_Id) return Boolean; -- Flag15
function Alternatives
(N : Node_Id) return List_Id; -- List4
function Ancestor_Part
(N : Node_Id) return Node_Id; -- Node3
function Atomic_Sync_Required
(N : Node_Id) return Boolean; -- Flag14
function Array_Aggregate
(N : Node_Id) return Node_Id; -- Node3
function Aspect_Rep_Item
(N : Node_Id) return Node_Id; -- Node2
function Assignment_OK
(N : Node_Id) return Boolean; -- Flag15
function Associated_Node
(N : Node_Id) return Node_Id; -- Node4
function At_End_Proc
(N : Node_Id) return Node_Id; -- Node1
function Attribute_Name
(N : Node_Id) return Name_Id; -- Name2
function Aux_Decls_Node
(N : Node_Id) return Node_Id; -- Node5
function Backwards_OK
(N : Node_Id) return Boolean; -- Flag6
function Bad_Is_Detected
(N : Node_Id) return Boolean; -- Flag15
function By_Ref
(N : Node_Id) return Boolean; -- Flag5
function Body_Required
(N : Node_Id) return Boolean; -- Flag13
function Body_To_Inline
(N : Node_Id) return Node_Id; -- Node3
function Box_Present
(N : Node_Id) return Boolean; -- Flag15
function Char_Literal_Value
(N : Node_Id) return Uint; -- Uint2
function Chars
(N : Node_Id) return Name_Id; -- Name1
function Check_Address_Alignment
(N : Node_Id) return Boolean; -- Flag11
function Choice_Parameter
(N : Node_Id) return Node_Id; -- Node2
function Choices
(N : Node_Id) return List_Id; -- List1
function Class_Present
(N : Node_Id) return Boolean; -- Flag6
function Classifications
(N : Node_Id) return Node_Id; -- Node3
function Comes_From_Extended_Return_Statement
(N : Node_Id) return Boolean; -- Flag18
function Compile_Time_Known_Aggregate
(N : Node_Id) return Boolean; -- Flag18
function Component_Associations
(N : Node_Id) return List_Id; -- List2
function Component_Clauses
(N : Node_Id) return List_Id; -- List3
function Component_Definition
(N : Node_Id) return Node_Id; -- Node4
function Component_Items
(N : Node_Id) return List_Id; -- List3
function Component_List
(N : Node_Id) return Node_Id; -- Node1
function Component_Name
(N : Node_Id) return Node_Id; -- Node1
function Componentwise_Assignment
(N : Node_Id) return Boolean; -- Flag14
function Condition
(N : Node_Id) return Node_Id; -- Node1
function Condition_Actions
(N : Node_Id) return List_Id; -- List3
function Config_Pragmas
(N : Node_Id) return List_Id; -- List4
function Constant_Present
(N : Node_Id) return Boolean; -- Flag17
function Constraint
(N : Node_Id) return Node_Id; -- Node3
function Constraints
(N : Node_Id) return List_Id; -- List1
function Context_Installed
(N : Node_Id) return Boolean; -- Flag13
function Context_Pending
(N : Node_Id) return Boolean; -- Flag16
function Context_Items
(N : Node_Id) return List_Id; -- List1
function Contract_Test_Cases
(N : Node_Id) return Node_Id; -- Node2
function Controlling_Argument
(N : Node_Id) return Node_Id; -- Node1
function Conversion_OK
(N : Node_Id) return Boolean; -- Flag14
function Convert_To_Return_False
(N : Node_Id) return Boolean; -- Flag13
function Corresponding_Aspect
(N : Node_Id) return Node_Id; -- Node3
function Corresponding_Body
(N : Node_Id) return Node_Id; -- Node5
function Corresponding_Formal_Spec
(N : Node_Id) return Node_Id; -- Node3
function Corresponding_Generic_Association
(N : Node_Id) return Node_Id; -- Node5
function Corresponding_Integer_Value
(N : Node_Id) return Uint; -- Uint4
function Corresponding_Spec
(N : Node_Id) return Node_Id; -- Node5
function Corresponding_Spec_Of_Stub
(N : Node_Id) return Node_Id; -- Node2
function Corresponding_Stub
(N : Node_Id) return Node_Id; -- Node3
function Dcheck_Function
(N : Node_Id) return Entity_Id; -- Node5
function Declarations
(N : Node_Id) return List_Id; -- List2
function Default_Expression
(N : Node_Id) return Node_Id; -- Node5
function Default_Storage_Pool
(N : Node_Id) return Node_Id; -- Node3
function Default_Name
(N : Node_Id) return Node_Id; -- Node2
function Defining_Identifier
(N : Node_Id) return Entity_Id; -- Node1
function Defining_Unit_Name
(N : Node_Id) return Node_Id; -- Node1
function Delay_Alternative
(N : Node_Id) return Node_Id; -- Node4
function Delay_Statement
(N : Node_Id) return Node_Id; -- Node2
function Delta_Expression
(N : Node_Id) return Node_Id; -- Node3
function Digits_Expression
(N : Node_Id) return Node_Id; -- Node2
function Discr_Check_Funcs_Built
(N : Node_Id) return Boolean; -- Flag11
function Discrete_Choices
(N : Node_Id) return List_Id; -- List4
function Discrete_Range
(N : Node_Id) return Node_Id; -- Node4
function Discrete_Subtype_Definition
(N : Node_Id) return Node_Id; -- Node4
function Discrete_Subtype_Definitions
(N : Node_Id) return List_Id; -- List2
function Discriminant_Specifications
(N : Node_Id) return List_Id; -- List4
function Discriminant_Type
(N : Node_Id) return Node_Id; -- Node5
function Do_Accessibility_Check
(N : Node_Id) return Boolean; -- Flag13
function Do_Discriminant_Check
(N : Node_Id) return Boolean; -- Flag1
function Do_Division_Check
(N : Node_Id) return Boolean; -- Flag13
function Do_Length_Check
(N : Node_Id) return Boolean; -- Flag4
function Do_Overflow_Check
(N : Node_Id) return Boolean; -- Flag17
function Do_Range_Check
(N : Node_Id) return Boolean; -- Flag9
function Do_Storage_Check
(N : Node_Id) return Boolean; -- Flag17
function Do_Tag_Check
(N : Node_Id) return Boolean; -- Flag13
function Elaborate_All_Desirable
(N : Node_Id) return Boolean; -- Flag9
function Elaborate_All_Present
(N : Node_Id) return Boolean; -- Flag14
function Elaborate_Desirable
(N : Node_Id) return Boolean; -- Flag11
function Elaborate_Present
(N : Node_Id) return Boolean; -- Flag4
function Elaboration_Boolean
(N : Node_Id) return Node_Id; -- Node2
function Else_Actions
(N : Node_Id) return List_Id; -- List3
function Else_Statements
(N : Node_Id) return List_Id; -- List4
function Elsif_Parts
(N : Node_Id) return List_Id; -- List3
function Enclosing_Variant
(N : Node_Id) return Node_Id; -- Node2
function End_Label
(N : Node_Id) return Node_Id; -- Node4
function End_Span
(N : Node_Id) return Uint; -- Uint5
function Entity
(N : Node_Id) return Node_Id; -- Node4
function Entity_Or_Associated_Node
(N : Node_Id) return Node_Id; -- Node4
function Entry_Body_Formal_Part
(N : Node_Id) return Node_Id; -- Node5
function Entry_Call_Alternative
(N : Node_Id) return Node_Id; -- Node1
function Entry_Call_Statement
(N : Node_Id) return Node_Id; -- Node1
function Entry_Direct_Name
(N : Node_Id) return Node_Id; -- Node1
function Entry_Index
(N : Node_Id) return Node_Id; -- Node5
function Entry_Index_Specification
(N : Node_Id) return Node_Id; -- Node4
function Etype
(N : Node_Id) return Node_Id; -- Node5
function Exception_Choices
(N : Node_Id) return List_Id; -- List4
function Exception_Handlers
(N : Node_Id) return List_Id; -- List5
function Exception_Junk
(N : Node_Id) return Boolean; -- Flag8
function Exception_Label
(N : Node_Id) return Node_Id; -- Node5
function Explicit_Actual_Parameter
(N : Node_Id) return Node_Id; -- Node3
function Expansion_Delayed
(N : Node_Id) return Boolean; -- Flag11
function Explicit_Generic_Actual_Parameter
(N : Node_Id) return Node_Id; -- Node1
function Expression
(N : Node_Id) return Node_Id; -- Node3
function Expressions
(N : Node_Id) return List_Id; -- List1
function First_Bit
(N : Node_Id) return Node_Id; -- Node3
function First_Inlined_Subprogram
(N : Node_Id) return Entity_Id; -- Node3
function First_Name
(N : Node_Id) return Boolean; -- Flag5
function First_Named_Actual
(N : Node_Id) return Node_Id; -- Node4
function First_Real_Statement
(N : Node_Id) return Node_Id; -- Node2
function First_Subtype_Link
(N : Node_Id) return Entity_Id; -- Node5
function Float_Truncate
(N : Node_Id) return Boolean; -- Flag11
function Formal_Type_Definition
(N : Node_Id) return Node_Id; -- Node3
function Forwards_OK
(N : Node_Id) return Boolean; -- Flag5
function From_Aspect_Specification
(N : Node_Id) return Boolean; -- Flag13
function From_At_End
(N : Node_Id) return Boolean; -- Flag4
function From_At_Mod
(N : Node_Id) return Boolean; -- Flag4
function From_Default
(N : Node_Id) return Boolean; -- Flag6
function Generic_Associations
(N : Node_Id) return List_Id; -- List3
function Generic_Formal_Declarations
(N : Node_Id) return List_Id; -- List2
function Generic_Parent
(N : Node_Id) return Node_Id; -- Node5
function Generic_Parent_Type
(N : Node_Id) return Node_Id; -- Node4
function Handled_Statement_Sequence
(N : Node_Id) return Node_Id; -- Node4
function Handler_List_Entry
(N : Node_Id) return Node_Id; -- Node2
function Has_Created_Identifier
(N : Node_Id) return Boolean; -- Flag15
function Has_Dereference_Action
(N : Node_Id) return Boolean; -- Flag13
function Has_Dynamic_Length_Check
(N : Node_Id) return Boolean; -- Flag10
function Has_Dynamic_Range_Check
(N : Node_Id) return Boolean; -- Flag12
function Has_Init_Expression
(N : Node_Id) return Boolean; -- Flag14
function Has_Local_Raise
(N : Node_Id) return Boolean; -- Flag8
function Has_No_Elaboration_Code
(N : Node_Id) return Boolean; -- Flag17
function Has_Pragma_Suppress_All
(N : Node_Id) return Boolean; -- Flag14
function Has_Private_View
(N : Node_Id) return Boolean; -- Flag11
function Has_Relative_Deadline_Pragma
(N : Node_Id) return Boolean; -- Flag9
function Has_Self_Reference
(N : Node_Id) return Boolean; -- Flag13
function Has_SP_Choice
(N : Node_Id) return Boolean; -- Flag15
function Has_Storage_Size_Pragma
(N : Node_Id) return Boolean; -- Flag5
function Has_Wide_Character
(N : Node_Id) return Boolean; -- Flag11
function Has_Wide_Wide_Character
(N : Node_Id) return Boolean; -- Flag13
function Header_Size_Added
(N : Node_Id) return Boolean; -- Flag11
function Hidden_By_Use_Clause
(N : Node_Id) return Elist_Id; -- Elist4
function High_Bound
(N : Node_Id) return Node_Id; -- Node2
function Identifier
(N : Node_Id) return Node_Id; -- Node1
function Interface_List
(N : Node_Id) return List_Id; -- List2
function Interface_Present
(N : Node_Id) return Boolean; -- Flag16
function Implicit_With
(N : Node_Id) return Boolean; -- Flag16
function Implicit_With_From_Instantiation
(N : Node_Id) return Boolean; -- Flag12
function Import_Interface_Present
(N : Node_Id) return Boolean; -- Flag16
function In_Assertion_Expression
(N : Node_Id) return Boolean; -- Flag4
function In_Present
(N : Node_Id) return Boolean; -- Flag15
function Includes_Infinities
(N : Node_Id) return Boolean; -- Flag11
function Inherited_Discriminant
(N : Node_Id) return Boolean; -- Flag13
function Instance_Spec
(N : Node_Id) return Node_Id; -- Node5
function Intval
(N : Node_Id) return Uint; -- Uint3
function Is_Accessibility_Actual
(N : Node_Id) return Boolean; -- Flag13
function Is_Asynchronous_Call_Block
(N : Node_Id) return Boolean; -- Flag7
function Is_Boolean_Aspect
(N : Node_Id) return Boolean; -- Flag16
function Is_Checked
(N : Node_Id) return Boolean; -- Flag11
function Is_Component_Left_Opnd
(N : Node_Id) return Boolean; -- Flag13
function Is_Component_Right_Opnd
(N : Node_Id) return Boolean; -- Flag14
function Is_Controlling_Actual
(N : Node_Id) return Boolean; -- Flag16
function Is_Delayed_Aspect
(N : Node_Id) return Boolean; -- Flag14
function Is_Disabled
(N : Node_Id) return Boolean; -- Flag15
function Is_Dynamic_Coextension
(N : Node_Id) return Boolean; -- Flag18
function Is_Elsif
(N : Node_Id) return Boolean; -- Flag13
function Is_Entry_Barrier_Function
(N : Node_Id) return Boolean; -- Flag8
function Is_Expanded_Build_In_Place_Call
(N : Node_Id) return Boolean; -- Flag11
function Is_Finalization_Wrapper
(N : Node_Id) return Boolean; -- Flag9
function Is_Folded_In_Parser
(N : Node_Id) return Boolean; -- Flag4
function Is_Ignored
(N : Node_Id) return Boolean; -- Flag9
function Is_In_Discriminant_Check
(N : Node_Id) return Boolean; -- Flag11
function Is_Machine_Number
(N : Node_Id) return Boolean; -- Flag11
function Is_Null_Loop
(N : Node_Id) return Boolean; -- Flag16
function Is_Overloaded
(N : Node_Id) return Boolean; -- Flag5
function Is_Power_Of_2_For_Shift
(N : Node_Id) return Boolean; -- Flag13
function Is_Prefixed_Call
(N : Node_Id) return Boolean; -- Flag17
function Is_Protected_Subprogram_Body
(N : Node_Id) return Boolean; -- Flag7
function Is_Static_Coextension
(N : Node_Id) return Boolean; -- Flag14
function Is_Static_Expression
(N : Node_Id) return Boolean; -- Flag6
function Is_Subprogram_Descriptor
(N : Node_Id) return Boolean; -- Flag16
function Is_Task_Allocation_Block
(N : Node_Id) return Boolean; -- Flag6
function Is_Task_Master
(N : Node_Id) return Boolean; -- Flag5
function Iteration_Scheme
(N : Node_Id) return Node_Id; -- Node2
function Iterator_Specification
(N : Node_Id) return Node_Id; -- Node2
function Itype
(N : Node_Id) return Entity_Id; -- Node1
function Kill_Range_Check
(N : Node_Id) return Boolean; -- Flag11
function Label_Construct
(N : Node_Id) return Node_Id; -- Node2
function Left_Opnd
(N : Node_Id) return Node_Id; -- Node2
function Last_Bit
(N : Node_Id) return Node_Id; -- Node4
function Last_Name
(N : Node_Id) return Boolean; -- Flag6
function Library_Unit
(N : Node_Id) return Node_Id; -- Node4
function Limited_View_Installed
(N : Node_Id) return Boolean; -- Flag18
function Limited_Present
(N : Node_Id) return Boolean; -- Flag17
function Literals
(N : Node_Id) return List_Id; -- List1
function Local_Raise_Not_OK
(N : Node_Id) return Boolean; -- Flag7
function Local_Raise_Statements
(N : Node_Id) return Elist_Id; -- Elist1
function Loop_Actions
(N : Node_Id) return List_Id; -- List2
function Loop_Parameter_Specification
(N : Node_Id) return Node_Id; -- Node4
function Low_Bound
(N : Node_Id) return Node_Id; -- Node1
function Mod_Clause
(N : Node_Id) return Node_Id; -- Node2
function More_Ids
(N : Node_Id) return Boolean; -- Flag5
function Must_Be_Byte_Aligned
(N : Node_Id) return Boolean; -- Flag14
function Must_Not_Freeze
(N : Node_Id) return Boolean; -- Flag8
function Must_Not_Override
(N : Node_Id) return Boolean; -- Flag15
function Must_Override
(N : Node_Id) return Boolean; -- Flag14
function Name
(N : Node_Id) return Node_Id; -- Node2
function Names
(N : Node_Id) return List_Id; -- List2
function Next_Entity
(N : Node_Id) return Node_Id; -- Node2
function Next_Exit_Statement
(N : Node_Id) return Node_Id; -- Node3
function Next_Implicit_With
(N : Node_Id) return Node_Id; -- Node3
function Next_Named_Actual
(N : Node_Id) return Node_Id; -- Node4
function Next_Pragma
(N : Node_Id) return Node_Id; -- Node1
function Next_Rep_Item
(N : Node_Id) return Node_Id; -- Node5
function Next_Use_Clause
(N : Node_Id) return Node_Id; -- Node3
function No_Ctrl_Actions
(N : Node_Id) return Boolean; -- Flag7
function No_Elaboration_Check
(N : Node_Id) return Boolean; -- Flag14
function No_Entities_Ref_In_Spec
(N : Node_Id) return Boolean; -- Flag8
function No_Initialization
(N : Node_Id) return Boolean; -- Flag13
function No_Minimize_Eliminate
(N : Node_Id) return Boolean; -- Flag17
function No_Truncation
(N : Node_Id) return Boolean; -- Flag17
function Null_Present
(N : Node_Id) return Boolean; -- Flag13
function Null_Exclusion_Present
(N : Node_Id) return Boolean; -- Flag11
function Null_Exclusion_In_Return_Present
(N : Node_Id) return Boolean; -- Flag14
function Null_Record_Present
(N : Node_Id) return Boolean; -- Flag17
function Object_Definition
(N : Node_Id) return Node_Id; -- Node4
function Of_Present
(N : Node_Id) return Boolean; -- Flag16
function Original_Discriminant
(N : Node_Id) return Node_Id; -- Node2
function Original_Entity
(N : Node_Id) return Entity_Id; -- Node2
function Others_Discrete_Choices
(N : Node_Id) return List_Id; -- List1
function Out_Present
(N : Node_Id) return Boolean; -- Flag17
function Parameter_Associations
(N : Node_Id) return List_Id; -- List3
function Parameter_List_Truncated
(N : Node_Id) return Boolean; -- Flag17
function Parameter_Specifications
(N : Node_Id) return List_Id; -- List3
function Parameter_Type
(N : Node_Id) return Node_Id; -- Node2
function Parent_Spec
(N : Node_Id) return Node_Id; -- Node4
function Position
(N : Node_Id) return Node_Id; -- Node2
function Pragma_Argument_Associations
(N : Node_Id) return List_Id; -- List2
function Pragma_Identifier
(N : Node_Id) return Node_Id; -- Node4
function Pragmas_After
(N : Node_Id) return List_Id; -- List5
function Pragmas_Before
(N : Node_Id) return List_Id; -- List4
function Pre_Post_Conditions
(N : Node_Id) return Node_Id; -- Node1
function Prefix
(N : Node_Id) return Node_Id; -- Node3
function Premature_Use
(N : Node_Id) return Node_Id; -- Node5
function Present_Expr
(N : Node_Id) return Uint; -- Uint3
function Prev_Ids
(N : Node_Id) return Boolean; -- Flag6
function Print_In_Hex
(N : Node_Id) return Boolean; -- Flag13
function Private_Declarations
(N : Node_Id) return List_Id; -- List3
function Private_Present
(N : Node_Id) return Boolean; -- Flag15
function Procedure_To_Call
(N : Node_Id) return Node_Id; -- Node2
function Proper_Body
(N : Node_Id) return Node_Id; -- Node1
function Protected_Definition
(N : Node_Id) return Node_Id; -- Node3
function Protected_Present
(N : Node_Id) return Boolean; -- Flag6
function Raises_Constraint_Error
(N : Node_Id) return Boolean; -- Flag7
function Range_Constraint
(N : Node_Id) return Node_Id; -- Node4
function Range_Expression
(N : Node_Id) return Node_Id; -- Node4
function Real_Range_Specification
(N : Node_Id) return Node_Id; -- Node4
function Realval
(N : Node_Id) return Ureal; -- Ureal3
function Reason
(N : Node_Id) return Uint; -- Uint3
function Record_Extension_Part
(N : Node_Id) return Node_Id; -- Node3
function Redundant_Use
(N : Node_Id) return Boolean; -- Flag13
function Renaming_Exception
(N : Node_Id) return Node_Id; -- Node2
function Result_Definition
(N : Node_Id) return Node_Id; -- Node4
function Return_Object_Declarations
(N : Node_Id) return List_Id; -- List3
function Return_Statement_Entity
(N : Node_Id) return Node_Id; -- Node5
function Reverse_Present
(N : Node_Id) return Boolean; -- Flag15
function Right_Opnd
(N : Node_Id) return Node_Id; -- Node3
function Rounded_Result
(N : Node_Id) return Boolean; -- Flag18
function SCIL_Controlling_Tag
(N : Node_Id) return Node_Id; -- Node5
function SCIL_Entity
(N : Node_Id) return Node_Id; -- Node4
function SCIL_Tag_Value
(N : Node_Id) return Node_Id; -- Node5
function SCIL_Target_Prim
(N : Node_Id) return Node_Id; -- Node2
function Scope
(N : Node_Id) return Node_Id; -- Node3
function Select_Alternatives
(N : Node_Id) return List_Id; -- List1
function Selector_Name
(N : Node_Id) return Node_Id; -- Node2
function Selector_Names
(N : Node_Id) return List_Id; -- List1
function Shift_Count_OK
(N : Node_Id) return Boolean; -- Flag4
function Source_Type
(N : Node_Id) return Entity_Id; -- Node1
function Specification
(N : Node_Id) return Node_Id; -- Node1
function Split_PPC
(N : Node_Id) return Boolean; -- Flag17
function Statements
(N : Node_Id) return List_Id; -- List3
function Storage_Pool
(N : Node_Id) return Node_Id; -- Node1
function Subpool_Handle_Name
(N : Node_Id) return Node_Id; -- Node4
function Strval
(N : Node_Id) return String_Id; -- Str3
function Subtype_Indication
(N : Node_Id) return Node_Id; -- Node5
function Subtype_Mark
(N : Node_Id) return Node_Id; -- Node4
function Subtype_Marks
(N : Node_Id) return List_Id; -- List2
function Suppress_Assignment_Checks
(N : Node_Id) return Boolean; -- Flag18
function Suppress_Loop_Warnings
(N : Node_Id) return Boolean; -- Flag17
function Synchronized_Present
(N : Node_Id) return Boolean; -- Flag7
function Tagged_Present
(N : Node_Id) return Boolean; -- Flag15
function Target_Type
(N : Node_Id) return Entity_Id; -- Node2
function Task_Definition
(N : Node_Id) return Node_Id; -- Node3
function Task_Present
(N : Node_Id) return Boolean; -- Flag5
function Then_Actions
(N : Node_Id) return List_Id; -- List2
function Then_Statements
(N : Node_Id) return List_Id; -- List2
function Treat_Fixed_As_Integer
(N : Node_Id) return Boolean; -- Flag14
function Triggering_Alternative
(N : Node_Id) return Node_Id; -- Node1
function Triggering_Statement
(N : Node_Id) return Node_Id; -- Node1
function TSS_Elist
(N : Node_Id) return Elist_Id; -- Elist3
function Type_Definition
(N : Node_Id) return Node_Id; -- Node3
function Unit
(N : Node_Id) return Node_Id; -- Node2
function Unknown_Discriminants_Present
(N : Node_Id) return Boolean; -- Flag13
function Unreferenced_In_Spec
(N : Node_Id) return Boolean; -- Flag7
function Variant_Part
(N : Node_Id) return Node_Id; -- Node4
function Variants
(N : Node_Id) return List_Id; -- List1
function Visible_Declarations
(N : Node_Id) return List_Id; -- List2
function Used_Operations
(N : Node_Id) return Elist_Id; -- Elist5
function Was_Originally_Stub
(N : Node_Id) return Boolean; -- Flag13
function Withed_Body
(N : Node_Id) return Node_Id; -- Node1
-- End functions (note used by xsinfo utility program to end processing)
----------------------------
-- Node Update Procedures --
----------------------------
-- These are the corresponding node update routines, which again provide
-- a high level logical access with type checking. In addition to setting
-- the indicated field of the node N to the given Val, in the case of
-- tree pointers (List1-4), the parent pointer of the Val node is set to
-- point back to node N. This automates the setting of the parent pointer.
procedure Set_ABE_Is_Certain
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Abort_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Abortable_Part
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Abstract_Present
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_Accept_Handler_Records
(N : Node_Id; Val : List_Id); -- List5
procedure Set_Accept_Statement
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Access_Definition
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Access_To_Subprogram_Definition
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Access_Types_To_Process
(N : Node_Id; Val : Elist_Id); -- Elist2
procedure Set_Actions
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Activation_Chain_Entity
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Acts_As_Spec
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_Actual_Designated_Subtype
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Address_Warning_Posted
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Aggregate_Bounds
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Aliased_Present
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_All_Others
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_All_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Alternatives
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Ancestor_Part
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Atomic_Sync_Required
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Array_Aggregate
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Aspect_Rep_Item
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Assignment_OK
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Associated_Node
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Attribute_Name
(N : Node_Id; Val : Name_Id); -- Name2
procedure Set_At_End_Proc
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Aux_Decls_Node
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Backwards_OK
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Bad_Is_Detected
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Body_Required
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Body_To_Inline
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Box_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_By_Ref
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_Char_Literal_Value
(N : Node_Id; Val : Uint); -- Uint2
procedure Set_Chars
(N : Node_Id; Val : Name_Id); -- Name1
procedure Set_Check_Address_Alignment
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Choice_Parameter
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Choices
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Class_Present
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Classifications
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Comes_From_Extended_Return_Statement
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Compile_Time_Known_Aggregate
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Component_Associations
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Component_Clauses
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Component_Definition
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Component_Items
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Component_List
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Component_Name
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Componentwise_Assignment
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Condition
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Condition_Actions
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Config_Pragmas
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Constant_Present
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Constraint
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Constraints
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Context_Installed
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Context_Items
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Context_Pending
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Contract_Test_Cases
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Controlling_Argument
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Conversion_OK
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Convert_To_Return_False
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Corresponding_Aspect
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Corresponding_Body
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Corresponding_Formal_Spec
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Corresponding_Generic_Association
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Corresponding_Integer_Value
(N : Node_Id; Val : Uint); -- Uint4
procedure Set_Corresponding_Spec
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Corresponding_Spec_Of_Stub
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Corresponding_Stub
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Dcheck_Function
(N : Node_Id; Val : Entity_Id); -- Node5
procedure Set_Declarations
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Default_Expression
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Default_Storage_Pool
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Default_Name
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Defining_Identifier
(N : Node_Id; Val : Entity_Id); -- Node1
procedure Set_Defining_Unit_Name
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Delay_Alternative
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Delay_Statement
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Delta_Expression
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Digits_Expression
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Discr_Check_Funcs_Built
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Discrete_Choices
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Discrete_Range
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Discrete_Subtype_Definition
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Discrete_Subtype_Definitions
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Discriminant_Specifications
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Discriminant_Type
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Do_Accessibility_Check
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Do_Discriminant_Check
(N : Node_Id; Val : Boolean := True); -- Flag1
procedure Set_Do_Division_Check
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Do_Length_Check
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_Do_Overflow_Check
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Do_Range_Check
(N : Node_Id; Val : Boolean := True); -- Flag9
procedure Set_Do_Storage_Check
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Do_Tag_Check
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Elaborate_All_Desirable
(N : Node_Id; Val : Boolean := True); -- Flag9
procedure Set_Elaborate_All_Present
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Elaborate_Desirable
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Elaborate_Present
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_Elaboration_Boolean
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Else_Actions
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Else_Statements
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Elsif_Parts
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Enclosing_Variant
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_End_Label
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_End_Span
(N : Node_Id; Val : Uint); -- Uint5
procedure Set_Entity
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Entry_Body_Formal_Part
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Entry_Call_Alternative
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Entry_Call_Statement
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Entry_Direct_Name
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Entry_Index
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Entry_Index_Specification
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Etype
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Exception_Choices
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Exception_Handlers
(N : Node_Id; Val : List_Id); -- List5
procedure Set_Exception_Junk
(N : Node_Id; Val : Boolean := True); -- Flag8
procedure Set_Exception_Label
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Expansion_Delayed
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Explicit_Actual_Parameter
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Explicit_Generic_Actual_Parameter
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Expression
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Expressions
(N : Node_Id; Val : List_Id); -- List1
procedure Set_First_Bit
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_First_Inlined_Subprogram
(N : Node_Id; Val : Entity_Id); -- Node3
procedure Set_First_Name
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_First_Named_Actual
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_First_Real_Statement
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_First_Subtype_Link
(N : Node_Id; Val : Entity_Id); -- Node5
procedure Set_Float_Truncate
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Formal_Type_Definition
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Forwards_OK
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_From_At_Mod
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_From_Aspect_Specification
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_From_At_End
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_From_Default
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Generic_Associations
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Generic_Formal_Declarations
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Generic_Parent
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Generic_Parent_Type
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Handled_Statement_Sequence
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Handler_List_Entry
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Has_Created_Identifier
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Has_Dereference_Action
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Has_Dynamic_Length_Check
(N : Node_Id; Val : Boolean := True); -- Flag10
procedure Set_Has_Dynamic_Range_Check
(N : Node_Id; Val : Boolean := True); -- Flag12
procedure Set_Has_Init_Expression
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Has_Local_Raise
(N : Node_Id; Val : Boolean := True); -- Flag8
procedure Set_Has_No_Elaboration_Code
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Has_Pragma_Suppress_All
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Has_Private_View
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Has_Relative_Deadline_Pragma
(N : Node_Id; Val : Boolean := True); -- Flag9
procedure Set_Has_Self_Reference
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Has_SP_Choice
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Has_Storage_Size_Pragma
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_Has_Wide_Character
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Has_Wide_Wide_Character
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Header_Size_Added
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Hidden_By_Use_Clause
(N : Node_Id; Val : Elist_Id); -- Elist4
procedure Set_High_Bound
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Identifier
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Interface_List
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Interface_Present
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Implicit_With
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Implicit_With_From_Instantiation
(N : Node_Id; Val : Boolean := True); -- Flag12
procedure Set_Import_Interface_Present
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_In_Assertion_Expression
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_In_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Includes_Infinities
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Inherited_Discriminant
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Instance_Spec
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Intval
(N : Node_Id; Val : Uint); -- Uint3
procedure Set_Is_Accessibility_Actual
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Is_Asynchronous_Call_Block
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_Is_Boolean_Aspect
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Is_Checked
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Is_Component_Left_Opnd
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Is_Component_Right_Opnd
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Is_Controlling_Actual
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Is_Delayed_Aspect
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Is_Disabled
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Is_Ignored
(N : Node_Id; Val : Boolean := True); -- Flag9
procedure Set_Is_Dynamic_Coextension
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Is_Elsif
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Is_Entry_Barrier_Function
(N : Node_Id; Val : Boolean := True); -- Flag8
procedure Set_Is_Expanded_Build_In_Place_Call
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Is_Finalization_Wrapper
(N : Node_Id; Val : Boolean := True); -- Flag9
procedure Set_Is_Folded_In_Parser
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_Is_In_Discriminant_Check
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Is_Machine_Number
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Is_Null_Loop
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Is_Overloaded
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_Is_Power_Of_2_For_Shift
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Is_Prefixed_Call
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Is_Protected_Subprogram_Body
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_Is_Static_Coextension
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Is_Static_Expression
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Is_Subprogram_Descriptor
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Is_Task_Allocation_Block
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Is_Task_Master
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_Iteration_Scheme
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Iterator_Specification
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Itype
(N : Node_Id; Val : Entity_Id); -- Node1
procedure Set_Kill_Range_Check
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Last_Bit
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Last_Name
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Library_Unit
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Label_Construct
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Left_Opnd
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Limited_View_Installed
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Limited_Present
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Literals
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Local_Raise_Not_OK
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_Local_Raise_Statements
(N : Node_Id; Val : Elist_Id); -- Elist1
procedure Set_Loop_Actions
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Loop_Parameter_Specification
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Low_Bound
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Mod_Clause
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_More_Ids
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_Must_Be_Byte_Aligned
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Must_Not_Freeze
(N : Node_Id; Val : Boolean := True); -- Flag8
procedure Set_Must_Not_Override
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Must_Override
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Name
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Names
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Next_Entity
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Next_Exit_Statement
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Next_Implicit_With
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Next_Named_Actual
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Next_Pragma
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Next_Rep_Item
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Next_Use_Clause
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_No_Ctrl_Actions
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_No_Elaboration_Check
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_No_Entities_Ref_In_Spec
(N : Node_Id; Val : Boolean := True); -- Flag8
procedure Set_No_Initialization
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_No_Minimize_Eliminate
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_No_Truncation
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Null_Present
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Null_Exclusion_Present
(N : Node_Id; Val : Boolean := True); -- Flag11
procedure Set_Null_Exclusion_In_Return_Present
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Null_Record_Present
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Object_Definition
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Of_Present
(N : Node_Id; Val : Boolean := True); -- Flag16
procedure Set_Original_Discriminant
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Original_Entity
(N : Node_Id; Val : Entity_Id); -- Node2
procedure Set_Others_Discrete_Choices
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Out_Present
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Parameter_Associations
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Parameter_List_Truncated
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Parameter_Specifications
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Parameter_Type
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Parent_Spec
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Position
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Pragma_Argument_Associations
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Pragma_Identifier
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Pragmas_After
(N : Node_Id; Val : List_Id); -- List5
procedure Set_Pragmas_Before
(N : Node_Id; Val : List_Id); -- List4
procedure Set_Pre_Post_Conditions
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Prefix
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Premature_Use
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Present_Expr
(N : Node_Id; Val : Uint); -- Uint3
procedure Set_Prev_Ids
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Print_In_Hex
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Private_Declarations
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Private_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Procedure_To_Call
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Proper_Body
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Protected_Definition
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Protected_Present
(N : Node_Id; Val : Boolean := True); -- Flag6
procedure Set_Raises_Constraint_Error
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_Range_Constraint
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Range_Expression
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Real_Range_Specification
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Realval
(N : Node_Id; Val : Ureal); -- Ureal3
procedure Set_Reason
(N : Node_Id; Val : Uint); -- Uint3
procedure Set_Record_Extension_Part
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Redundant_Use
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Renaming_Exception
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Result_Definition
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Return_Object_Declarations
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Return_Statement_Entity
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Reverse_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Right_Opnd
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Rounded_Result
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_SCIL_Controlling_Tag
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_SCIL_Entity
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_SCIL_Tag_Value
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_SCIL_Target_Prim
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Scope
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Select_Alternatives
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Selector_Name
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Selector_Names
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Shift_Count_OK
(N : Node_Id; Val : Boolean := True); -- Flag4
procedure Set_Source_Type
(N : Node_Id; Val : Entity_Id); -- Node1
procedure Set_Specification
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Split_PPC
(N : Node_Id; Val : Boolean); -- Flag17
procedure Set_Statements
(N : Node_Id; Val : List_Id); -- List3
procedure Set_Storage_Pool
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Subpool_Handle_Name
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Strval
(N : Node_Id; Val : String_Id); -- Str3
procedure Set_Subtype_Indication
(N : Node_Id; Val : Node_Id); -- Node5
procedure Set_Subtype_Mark
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Subtype_Marks
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Suppress_Assignment_Checks
(N : Node_Id; Val : Boolean := True); -- Flag18
procedure Set_Suppress_Loop_Warnings
(N : Node_Id; Val : Boolean := True); -- Flag17
procedure Set_Synchronized_Present
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_Tagged_Present
(N : Node_Id; Val : Boolean := True); -- Flag15
procedure Set_Target_Type
(N : Node_Id; Val : Entity_Id); -- Node2
procedure Set_Task_Definition
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Task_Present
(N : Node_Id; Val : Boolean := True); -- Flag5
procedure Set_Then_Actions
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Then_Statements
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Treat_Fixed_As_Integer
(N : Node_Id; Val : Boolean := True); -- Flag14
procedure Set_Triggering_Alternative
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_Triggering_Statement
(N : Node_Id; Val : Node_Id); -- Node1
procedure Set_TSS_Elist
(N : Node_Id; Val : Elist_Id); -- Elist3
procedure Set_Type_Definition
(N : Node_Id; Val : Node_Id); -- Node3
procedure Set_Unit
(N : Node_Id; Val : Node_Id); -- Node2
procedure Set_Unknown_Discriminants_Present
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Unreferenced_In_Spec
(N : Node_Id; Val : Boolean := True); -- Flag7
procedure Set_Variant_Part
(N : Node_Id; Val : Node_Id); -- Node4
procedure Set_Variants
(N : Node_Id; Val : List_Id); -- List1
procedure Set_Visible_Declarations
(N : Node_Id; Val : List_Id); -- List2
procedure Set_Used_Operations
(N : Node_Id; Val : Elist_Id); -- Elist5
procedure Set_Was_Originally_Stub
(N : Node_Id; Val : Boolean := True); -- Flag13
procedure Set_Withed_Body
(N : Node_Id; Val : Node_Id); -- Node1
-------------------------
-- Iterator Procedures --
-------------------------
-- The call to Next_xxx (N) is equivalent to N := Next_xxx (N)
procedure Next_Entity (N : in out Node_Id);
procedure Next_Named_Actual (N : in out Node_Id);
procedure Next_Rep_Item (N : in out Node_Id);
procedure Next_Use_Clause (N : in out Node_Id);
-------------------------------------------
-- Miscellaneous Tree Access Subprograms --
-------------------------------------------
function End_Location (N : Node_Id) return Source_Ptr;
-- N is an N_If_Statement or N_Case_Statement node, and this function
-- returns the location of the IF token in the END IF sequence by
-- translating the value of the End_Span field.
procedure Set_End_Location (N : Node_Id; S : Source_Ptr);
-- N is an N_If_Statement or N_Case_Statement node. This procedure sets
-- the End_Span field to correspond to the given value S. In other words,
-- End_Span is set to the difference between S and Sloc (N), the starting
-- location.
function Get_Pragma_Arg (Arg : Node_Id) return Node_Id;
-- Given an argument to a pragma Arg, this function returns the expression
-- for the argument. This is Arg itself, or, in the case where Arg is a
-- pragma argument association node, the expression from this node.
--------------------------------
-- Node_Kind Membership Tests --
--------------------------------
-- The following functions allow a convenient notation for testing whether
-- a Node_Kind value matches any one of a list of possible values. In each
-- case True is returned if the given T argument is equal to any of the V
-- arguments. Note that there is a similar set of functions defined in
-- Atree where the first argument is a Node_Id whose Nkind field is tested.
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind;
V4 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind;
V4 : Node_Kind;
V5 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind;
V4 : Node_Kind;
V5 : Node_Kind;
V6 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind;
V4 : Node_Kind;
V5 : Node_Kind;
V6 : Node_Kind;
V7 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind;
V4 : Node_Kind;
V5 : Node_Kind;
V6 : Node_Kind;
V7 : Node_Kind;
V8 : Node_Kind) return Boolean;
function Nkind_In
(T : Node_Kind;
V1 : Node_Kind;
V2 : Node_Kind;
V3 : Node_Kind;
V4 : Node_Kind;
V5 : Node_Kind;
V6 : Node_Kind;
V7 : Node_Kind;
V8 : Node_Kind;
V9 : Node_Kind) return Boolean;
pragma Inline (Nkind_In);
-- Inline all above functions
-----------------------
-- Utility Functions --
-----------------------
function Pragma_Name (N : Node_Id) return Name_Id;
pragma Inline (Pragma_Name);
-- Convenient function to obtain Chars field of Pragma_Identifier
-----------------------------
-- Syntactic Parent Tables --
-----------------------------
-- These tables show for each node, and for each of the five fields,
-- whether the corresponding field is syntactic (True) or semantic (False).
-- Unused entries are also set to False.
subtype Field_Num is Natural range 1 .. 5;
Is_Syntactic_Field : constant array (Node_Kind, Field_Num) of Boolean := (
-- Following entries can be built automatically from the sinfo sources
-- using the makeisf utility (currently this program is in spitbol).
N_Identifier =>
(1 => True, -- Chars (Name1)
2 => False, -- Original_Discriminant (Node2-Sem)
3 => False, -- unused
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Integer_Literal =>
(1 => False, -- unused
2 => False, -- Original_Entity (Node2-Sem)
3 => True, -- Intval (Uint3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Real_Literal =>
(1 => False, -- unused
2 => False, -- Original_Entity (Node2-Sem)
3 => True, -- Realval (Ureal3)
4 => False, -- Corresponding_Integer_Value (Uint4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Character_Literal =>
(1 => True, -- Chars (Name1)
2 => True, -- Char_Literal_Value (Uint2)
3 => False, -- unused
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_String_Literal =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Strval (Str3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Pragma =>
(1 => False, -- Next_Pragma (Node1-Sem)
2 => True, -- Pragma_Argument_Associations (List2)
3 => False, -- unused
4 => True, -- Pragma_Identifier (Node4)
5 => False), -- Next_Rep_Item (Node5-Sem)
N_Pragma_Argument_Association =>
(1 => True, -- Chars (Name1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Defining_Identifier =>
(1 => True, -- Chars (Name1)
2 => False, -- Next_Entity (Node2-Sem)
3 => False, -- Scope (Node3-Sem)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Full_Type_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Type_Definition (Node3)
4 => True, -- Discriminant_Specifications (List4)
5 => False), -- unused
N_Subtype_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => False, -- Generic_Parent_Type (Node4-Sem)
5 => True), -- Subtype_Indication (Node5)
N_Subtype_Indication =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Constraint (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => False), -- Etype (Node5-Sem)
N_Object_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- Handler_List_Entry (Node2-Sem)
3 => True, -- Expression (Node3)
4 => True, -- Object_Definition (Node4)
5 => False), -- Corresponding_Generic_Association (Node5-Sem)
N_Number_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Derived_Type_Definition =>
(1 => False, -- unused
2 => True, -- Interface_List (List2)
3 => True, -- Record_Extension_Part (Node3)
4 => False, -- unused
5 => True), -- Subtype_Indication (Node5)
N_Range_Constraint =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => True, -- Range_Expression (Node4)
5 => False), -- unused
N_Range =>
(1 => True, -- Low_Bound (Node1)
2 => True, -- High_Bound (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Enumeration_Type_Definition =>
(1 => True, -- Literals (List1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- End_Label (Node4)
5 => False), -- unused
N_Defining_Character_Literal =>
(1 => True, -- Chars (Name1)
2 => False, -- Next_Entity (Node2-Sem)
3 => False, -- Scope (Node3-Sem)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Signed_Integer_Type_Definition =>
(1 => True, -- Low_Bound (Node1)
2 => True, -- High_Bound (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Modular_Type_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Floating_Point_Definition =>
(1 => False, -- unused
2 => True, -- Digits_Expression (Node2)
3 => False, -- unused
4 => True, -- Real_Range_Specification (Node4)
5 => False), -- unused
N_Real_Range_Specification =>
(1 => True, -- Low_Bound (Node1)
2 => True, -- High_Bound (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Ordinary_Fixed_Point_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Delta_Expression (Node3)
4 => True, -- Real_Range_Specification (Node4)
5 => False), -- unused
N_Decimal_Fixed_Point_Definition =>
(1 => False, -- unused
2 => True, -- Digits_Expression (Node2)
3 => True, -- Delta_Expression (Node3)
4 => True, -- Real_Range_Specification (Node4)
5 => False), -- unused
N_Digits_Constraint =>
(1 => False, -- unused
2 => True, -- Digits_Expression (Node2)
3 => False, -- unused
4 => True, -- Range_Constraint (Node4)
5 => False), -- unused
N_Unconstrained_Array_Definition =>
(1 => False, -- unused
2 => True, -- Subtype_Marks (List2)
3 => False, -- unused
4 => True, -- Component_Definition (Node4)
5 => False), -- unused
N_Constrained_Array_Definition =>
(1 => False, -- unused
2 => True, -- Discrete_Subtype_Definitions (List2)
3 => False, -- unused
4 => True, -- Component_Definition (Node4)
5 => False), -- unused
N_Component_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Access_Definition (Node3)
4 => False, -- unused
5 => True), -- Subtype_Indication (Node5)
N_Discriminant_Specification =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => True), -- Discriminant_Type (Node5)
N_Index_Or_Discriminant_Constraint =>
(1 => True, -- Constraints (List1)
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Discriminant_Association =>
(1 => True, -- Selector_Names (List1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Record_Definition =>
(1 => True, -- Component_List (Node1)
2 => True, -- Interface_List (List2)
3 => False, -- unused
4 => True, -- End_Label (Node4)
5 => False), -- unused
N_Component_List =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Component_Items (List3)
4 => True, -- Variant_Part (Node4)
5 => False), -- unused
N_Component_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Component_Definition (Node4)
5 => False), -- unused
N_Variant_Part =>
(1 => True, -- Variants (List1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Variant =>
(1 => True, -- Component_List (Node1)
2 => False, -- Enclosing_Variant (Node2-Sem)
3 => False, -- Present_Expr (Uint3-Sem)
4 => True, -- Discrete_Choices (List4)
5 => False), -- Dcheck_Function (Node5-Sem)
N_Others_Choice =>
(1 => False, -- Others_Discrete_Choices (List1-Sem)
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Access_To_Object_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => True), -- Subtype_Indication (Node5)
N_Access_Function_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Parameter_Specifications (List3)
4 => True, -- Result_Definition (Node4)
5 => False), -- unused
N_Access_Procedure_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Parameter_Specifications (List3)
4 => False, -- unused
5 => False), -- unused
N_Access_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Access_To_Subprogram_Definition (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => False), -- unused
N_Incomplete_Type_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Discriminant_Specifications (List4)
5 => False), -- Premature_Use
N_Explicit_Dereference =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Prefix (Node3)
4 => False, -- Actual_Designated_Subtype (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Indexed_Component =>
(1 => True, -- Expressions (List1)
2 => False, -- unused
3 => True, -- Prefix (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Slice =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Prefix (Node3)
4 => True, -- Discrete_Range (Node4)
5 => False), -- Etype (Node5-Sem)
N_Selected_Component =>
(1 => False, -- unused
2 => True, -- Selector_Name (Node2)
3 => True, -- Prefix (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Attribute_Reference =>
(1 => True, -- Expressions (List1)
2 => True, -- Attribute_Name (Name2)
3 => True, -- Prefix (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Aggregate =>
(1 => True, -- Expressions (List1)
2 => True, -- Component_Associations (List2)
3 => False, -- Aggregate_Bounds (Node3-Sem)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Component_Association =>
(1 => True, -- Choices (List1)
2 => False, -- Loop_Actions (List2-Sem)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Extension_Aggregate =>
(1 => True, -- Expressions (List1)
2 => True, -- Component_Associations (List2)
3 => True, -- Ancestor_Part (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Null =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_And_Then =>
(1 => False, -- Actions (List1-Sem)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Or_Else =>
(1 => False, -- Actions (List1-Sem)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_In =>
(1 => False, -- unused
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => True, -- Alternatives (List4)
5 => False), -- Etype (Node5-Sem)
N_Not_In =>
(1 => False, -- unused
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => True, -- Alternatives (List4)
5 => False), -- Etype (Node5-Sem)
N_Op_And =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Or =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Xor =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Eq =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Ne =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Lt =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Le =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Gt =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Ge =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Add =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Subtract =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Concat =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Multiply =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Divide =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Mod =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Rem =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Expon =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Plus =>
(1 => True, -- Chars (Name1)
2 => False, -- unused
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Minus =>
(1 => True, -- Chars (Name1)
2 => False, -- unused
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Abs =>
(1 => True, -- Chars (Name1)
2 => False, -- unused
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Not =>
(1 => True, -- Chars (Name1)
2 => False, -- unused
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Type_Conversion =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => False), -- Etype (Node5-Sem)
N_Qualified_Expression =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => False), -- Etype (Node5-Sem)
N_Quantified_Expression =>
(1 => True, -- Condition (Node1)
2 => True, -- Iterator_Specification
3 => False, -- unused
4 => True, -- Loop_Parameter_Specification (Node4)
5 => False), -- Etype (Node5-Sem)
N_Allocator =>
(1 => False, -- Storage_Pool (Node1-Sem)
2 => False, -- Procedure_To_Call (Node2-Sem)
3 => True, -- Expression (Node3)
4 => True, -- Subpool_Handle_Name (Node4)
5 => False), -- Etype (Node5-Sem)
N_Null_Statement =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Label =>
(1 => True, -- Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Assignment_Statement =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_If_Statement =>
(1 => True, -- Condition (Node1)
2 => True, -- Then_Statements (List2)
3 => True, -- Elsif_Parts (List3)
4 => True, -- Else_Statements (List4)
5 => True), -- End_Span (Uint5)
N_Elsif_Part =>
(1 => True, -- Condition (Node1)
2 => True, -- Then_Statements (List2)
3 => False, -- Condition_Actions (List3-Sem)
4 => False, -- unused
5 => False), -- unused
N_Case_Expression =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Alternatives (List4)
5 => False), -- unused
N_Case_Expression_Alternative =>
(1 => False, -- Actions (List1-Sem)
2 => False, -- unused
3 => True, -- Statements (List3)
4 => True, -- Expression (Node4)
5 => False), -- unused
N_Case_Statement =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Alternatives (List4)
5 => True), -- End_Span (Uint5)
N_Case_Statement_Alternative =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Statements (List3)
4 => True, -- Discrete_Choices (List4)
5 => False), -- unused
N_Loop_Statement =>
(1 => True, -- Identifier (Node1)
2 => True, -- Iteration_Scheme (Node2)
3 => True, -- Statements (List3)
4 => True, -- End_Label (Node4)
5 => False), -- unused
N_Iteration_Scheme =>
(1 => True, -- Condition (Node1)
2 => True, -- Iterator_Specification (Node2)
3 => False, -- Condition_Actions (List3-Sem)
4 => True, -- Loop_Parameter_Specification (Node4)
5 => False), -- unused
N_Loop_Parameter_Specification =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Discrete_Subtype_Definition (Node4)
5 => False), -- unused
N_Iterator_Specification =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Name (Node2)
3 => False, -- Unused
4 => False, -- Unused
5 => True), -- Subtype_Indication (Node5)
N_Block_Statement =>
(1 => True, -- Identifier (Node1)
2 => True, -- Declarations (List2)
3 => False, -- Activation_Chain_Entity (Node3-Sem)
4 => True, -- Handled_Statement_Sequence (Node4)
5 => False), -- unused
N_Exit_Statement =>
(1 => True, -- Condition (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Goto_Statement =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Subprogram_Declaration =>
(1 => True, -- Specification (Node1)
2 => False, -- unused
3 => False, -- Body_To_Inline (Node3-Sem)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Abstract_Subprogram_Declaration =>
(1 => True, -- Specification (Node1)
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Function_Specification =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => False, -- Elaboration_Boolean (Node2-Sem)
3 => True, -- Parameter_Specifications (List3)
4 => True, -- Result_Definition (Node4)
5 => False), -- Generic_Parent (Node5-Sem)
N_Procedure_Specification =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => False, -- Elaboration_Boolean (Node2-Sem)
3 => True, -- Parameter_Specifications (List3)
4 => False, -- unused
5 => False), -- Generic_Parent (Node5-Sem)
N_Designator =>
(1 => True, -- Identifier (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Defining_Program_Unit_Name =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Operator_Symbol =>
(1 => True, -- Chars (Name1)
2 => False, -- unused
3 => True, -- Strval (Str3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Defining_Operator_Symbol =>
(1 => True, -- Chars (Name1)
2 => False, -- Next_Entity (Node2-Sem)
3 => False, -- Scope (Node3-Sem)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Parameter_Specification =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Parameter_Type (Node2)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- Default_Expression (Node5-Sem)
N_Subprogram_Body =>
(1 => True, -- Specification (Node1)
2 => True, -- Declarations (List2)
3 => False, -- Activation_Chain_Entity (Node3-Sem)
4 => True, -- Handled_Statement_Sequence (Node4)
5 => False), -- Corresponding_Spec (Node5-Sem)
N_Expression_Function =>
(1 => True, -- Specification (Node1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Procedure_Call_Statement =>
(1 => False, -- Controlling_Argument (Node1-Sem)
2 => True, -- Name (Node2)
3 => True, -- Parameter_Associations (List3)
4 => False, -- First_Named_Actual (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Function_Call =>
(1 => False, -- Controlling_Argument (Node1-Sem)
2 => True, -- Name (Node2)
3 => True, -- Parameter_Associations (List3)
4 => False, -- First_Named_Actual (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Parameter_Association =>
(1 => False, -- unused
2 => True, -- Selector_Name (Node2)
3 => True, -- Explicit_Actual_Parameter (Node3)
4 => False, -- Next_Named_Actual (Node4-Sem)
5 => False), -- unused
N_Simple_Return_Statement =>
(1 => False, -- Storage_Pool (Node1-Sem)
2 => False, -- Procedure_To_Call (Node2-Sem)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- Return_Statement_Entity (Node5-Sem)
N_Extended_Return_Statement =>
(1 => False, -- Storage_Pool (Node1-Sem)
2 => False, -- Procedure_To_Call (Node2-Sem)
3 => True, -- Return_Object_Declarations (List3)
4 => True, -- Handled_Statement_Sequence (Node4)
5 => False), -- Return_Statement_Entity (Node5-Sem)
N_Package_Declaration =>
(1 => True, -- Specification (Node1)
2 => False, -- unused
3 => False, -- Activation_Chain_Entity (Node3-Sem)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Package_Specification =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Visible_Declarations (List2)
3 => True, -- Private_Declarations (List3)
4 => True, -- End_Label (Node4)
5 => False), -- Generic_Parent (Node5-Sem)
N_Package_Body =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Declarations (List2)
3 => False, -- unused
4 => True, -- Handled_Statement_Sequence (Node4)
5 => False), -- Corresponding_Spec (Node5-Sem)
N_Private_Type_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Discriminant_Specifications (List4)
5 => False), -- unused
N_Private_Extension_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Interface_List (List2)
3 => False, -- unused
4 => True, -- Discriminant_Specifications (List4)
5 => True), -- Subtype_Indication (Node5)
N_Use_Package_Clause =>
(1 => False, -- unused
2 => True, -- Names (List2)
3 => False, -- Next_Use_Clause (Node3-Sem)
4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
5 => False), -- unused
N_Use_Type_Clause =>
(1 => False, -- unused
2 => True, -- Subtype_Marks (List2)
3 => False, -- Next_Use_Clause (Node3-Sem)
4 => False, -- Hidden_By_Use_Clause (Elist4-Sem)
5 => False), -- unused
N_Object_Renaming_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Name (Node2)
3 => True, -- Access_Definition (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => False), -- Corresponding_Generic_Association (Node5-Sem)
N_Exception_Renaming_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Package_Renaming_Declaration =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- unused
N_Subprogram_Renaming_Declaration =>
(1 => True, -- Specification (Node1)
2 => True, -- Name (Node2)
3 => False, -- Corresponding_Formal_Spec (Node3-Sem)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Corresponding_Spec (Node5-Sem)
N_Generic_Package_Renaming_Declaration =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- unused
N_Generic_Procedure_Renaming_Declaration =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- unused
N_Generic_Function_Renaming_Declaration =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- unused
N_Task_Type_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Interface_List (List2)
3 => True, -- Task_Definition (Node3)
4 => True, -- Discriminant_Specifications (List4)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Single_Task_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Interface_List (List2)
3 => True, -- Task_Definition (Node3)
4 => False, -- unused
5 => False), -- unused
N_Task_Definition =>
(1 => False, -- unused
2 => True, -- Visible_Declarations (List2)
3 => True, -- Private_Declarations (List3)
4 => True, -- End_Label (Node4)
5 => False), -- unused
N_Task_Body =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Declarations (List2)
3 => False, -- Activation_Chain_Entity (Node3-Sem)
4 => True, -- Handled_Statement_Sequence (Node4)
5 => False), -- Corresponding_Spec (Node5-Sem)
N_Protected_Type_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Interface_List (List2)
3 => True, -- Protected_Definition (Node3)
4 => True, -- Discriminant_Specifications (List4)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Single_Protected_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Interface_List (List2)
3 => True, -- Protected_Definition (Node3)
4 => False, -- unused
5 => False), -- unused
N_Protected_Definition =>
(1 => False, -- unused
2 => True, -- Visible_Declarations (List2)
3 => True, -- Private_Declarations (List3)
4 => True, -- End_Label (Node4)
5 => False), -- unused
N_Protected_Body =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Declarations (List2)
3 => False, -- unused
4 => True, -- End_Label (Node4)
5 => False), -- Corresponding_Spec (Node5-Sem)
N_Entry_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Parameter_Specifications (List3)
4 => True, -- Discrete_Subtype_Definition (Node4)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Accept_Statement =>
(1 => True, -- Entry_Direct_Name (Node1)
2 => True, -- Declarations (List2)
3 => True, -- Parameter_Specifications (List3)
4 => True, -- Handled_Statement_Sequence (Node4)
5 => True), -- Entry_Index (Node5)
N_Entry_Body =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Declarations (List2)
3 => False, -- Activation_Chain_Entity (Node3-Sem)
4 => True, -- Handled_Statement_Sequence (Node4)
5 => True), -- Entry_Body_Formal_Part (Node5)
N_Entry_Body_Formal_Part =>
(1 => True, -- Condition (Node1)
2 => False, -- unused
3 => True, -- Parameter_Specifications (List3)
4 => True, -- Entry_Index_Specification (Node4)
5 => False), -- unused
N_Entry_Index_Specification =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Discrete_Subtype_Definition (Node4)
5 => False), -- unused
N_Entry_Call_Statement =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => True, -- Parameter_Associations (List3)
4 => False, -- First_Named_Actual (Node4-Sem)
5 => False), -- unused
N_Requeue_Statement =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Delay_Until_Statement =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Delay_Relative_Statement =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Selective_Accept =>
(1 => True, -- Select_Alternatives (List1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Else_Statements (List4)
5 => False), -- unused
N_Accept_Alternative =>
(1 => True, -- Condition (Node1)
2 => True, -- Accept_Statement (Node2)
3 => True, -- Statements (List3)
4 => True, -- Pragmas_Before (List4)
5 => False), -- Accept_Handler_Records (List5-Sem)
N_Delay_Alternative =>
(1 => True, -- Condition (Node1)
2 => True, -- Delay_Statement (Node2)
3 => True, -- Statements (List3)
4 => True, -- Pragmas_Before (List4)
5 => False), -- unused
N_Terminate_Alternative =>
(1 => True, -- Condition (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Pragmas_Before (List4)
5 => True), -- Pragmas_After (List5)
N_Timed_Entry_Call =>
(1 => True, -- Entry_Call_Alternative (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Delay_Alternative (Node4)
5 => False), -- unused
N_Entry_Call_Alternative =>
(1 => True, -- Entry_Call_Statement (Node1)
2 => False, -- unused
3 => True, -- Statements (List3)
4 => True, -- Pragmas_Before (List4)
5 => False), -- unused
N_Conditional_Entry_Call =>
(1 => True, -- Entry_Call_Alternative (Node1)
2 => False, -- unused
3 => False, -- unused
4 => True, -- Else_Statements (List4)
5 => False), -- unused
N_Asynchronous_Select =>
(1 => True, -- Triggering_Alternative (Node1)
2 => True, -- Abortable_Part (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Triggering_Alternative =>
(1 => True, -- Triggering_Statement (Node1)
2 => False, -- unused
3 => True, -- Statements (List3)
4 => True, -- Pragmas_Before (List4)
5 => False), -- unused
N_Abortable_Part =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Statements (List3)
4 => False, -- unused
5 => False), -- unused
N_Abort_Statement =>
(1 => False, -- unused
2 => True, -- Names (List2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Compilation_Unit =>
(1 => True, -- Context_Items (List1)
2 => True, -- Unit (Node2)
3 => False, -- First_Inlined_Subprogram (Node3-Sem)
4 => False, -- Library_Unit (Node4-Sem)
5 => True), -- Aux_Decls_Node (Node5)
N_Compilation_Unit_Aux =>
(1 => True, -- Actions (List1)
2 => True, -- Declarations (List2)
3 => False, -- Default_Storage_Pool (Node3)
4 => True, -- Config_Pragmas (List4)
5 => True), -- Pragmas_After (List5)
N_With_Clause =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => False, -- unused
4 => False, -- Library_Unit (Node4-Sem)
5 => False), -- Corresponding_Spec (Node5-Sem)
N_Subprogram_Body_Stub =>
(1 => True, -- Specification (Node1)
2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
3 => False, -- unused
4 => False, -- Library_Unit (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Package_Body_Stub =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
3 => False, -- unused
4 => False, -- Library_Unit (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Task_Body_Stub =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
3 => False, -- unused
4 => False, -- Library_Unit (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Protected_Body_Stub =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- Corresponding_Spec_Of_Stub (Node2-Sem)
3 => False, -- unused
4 => False, -- Library_Unit (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Subunit =>
(1 => True, -- Proper_Body (Node1)
2 => True, -- Name (Node2)
3 => False, -- Corresponding_Stub (Node3-Sem)
4 => False, -- unused
5 => False), -- unused
N_Exception_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => False, -- Expression (Node3-Sem)
4 => False, -- unused
5 => False), -- unused
N_Handled_Sequence_Of_Statements =>
(1 => True, -- At_End_Proc (Node1)
2 => False, -- First_Real_Statement (Node2-Sem)
3 => True, -- Statements (List3)
4 => True, -- End_Label (Node4)
5 => True), -- Exception_Handlers (List5)
N_Exception_Handler =>
(1 => False, -- Local_Raise_Statements (Elist1)
2 => True, -- Choice_Parameter (Node2)
3 => True, -- Statements (List3)
4 => True, -- Exception_Choices (List4)
5 => False), -- Exception_Label (Node5)
N_Raise_Statement =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Raise_Expression =>
(1 => False, -- unused
2 => True, -- Name (Node2)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Generic_Subprogram_Declaration =>
(1 => True, -- Specification (Node1)
2 => True, -- Generic_Formal_Declarations (List2)
3 => False, -- unused
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Generic_Package_Declaration =>
(1 => True, -- Specification (Node1)
2 => True, -- Generic_Formal_Declarations (List2)
3 => False, -- Activation_Chain_Entity (Node3-Sem)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Corresponding_Body (Node5-Sem)
N_Package_Instantiation =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => True, -- Generic_Associations (List3)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Instance_Spec (Node5-Sem)
N_Procedure_Instantiation =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => True, -- Generic_Associations (List3)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Instance_Spec (Node5-Sem)
N_Function_Instantiation =>
(1 => True, -- Defining_Unit_Name (Node1)
2 => True, -- Name (Node2)
3 => True, -- Generic_Associations (List3)
4 => False, -- Parent_Spec (Node4-Sem)
5 => False), -- Instance_Spec (Node5-Sem)
N_Generic_Association =>
(1 => True, -- Explicit_Generic_Actual_Parameter (Node1)
2 => True, -- Selector_Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Object_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Access_Definition (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => True), -- Default_Expression (Node5)
N_Formal_Type_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- unused
3 => True, -- Formal_Type_Definition (Node3)
4 => True, -- Discriminant_Specifications (List4)
5 => False), -- unused
N_Formal_Private_Type_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Incomplete_Type_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Derived_Type_Definition =>
(1 => False, -- unused
2 => True, -- Interface_List (List2)
3 => False, -- unused
4 => True, -- Subtype_Mark (Node4)
5 => False), -- unused
N_Formal_Discrete_Type_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Signed_Integer_Type_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Modular_Type_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Floating_Point_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Ordinary_Fixed_Point_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Decimal_Fixed_Point_Definition =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Concrete_Subprogram_Declaration =>
(1 => True, -- Specification (Node1)
2 => True, -- Default_Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Abstract_Subprogram_Declaration =>
(1 => True, -- Specification (Node1)
2 => True, -- Default_Name (Node2)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Formal_Package_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => True, -- Name (Node2)
3 => True, -- Generic_Associations (List3)
4 => False, -- unused
5 => False), -- Instance_Spec (Node5-Sem)
N_Attribute_Definition_Clause =>
(1 => True, -- Chars (Name1)
2 => True, -- Name (Node2)
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- Next_Rep_Item (Node5-Sem)
N_Aspect_Specification =>
(1 => True, -- Identifier (Node1)
2 => False, -- Aspect_Rep_Item (Node2-Sem)
3 => True, -- Expression (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Next_Rep_Item (Node5-Sem)
N_Enumeration_Representation_Clause =>
(1 => True, -- Identifier (Node1)
2 => False, -- unused
3 => True, -- Array_Aggregate (Node3)
4 => False, -- unused
5 => False), -- Next_Rep_Item (Node5-Sem)
N_Record_Representation_Clause =>
(1 => True, -- Identifier (Node1)
2 => True, -- Mod_Clause (Node2)
3 => True, -- Component_Clauses (List3)
4 => False, -- unused
5 => False), -- Next_Rep_Item (Node5-Sem)
N_Component_Clause =>
(1 => True, -- Component_Name (Node1)
2 => True, -- Position (Node2)
3 => True, -- First_Bit (Node3)
4 => True, -- Last_Bit (Node4)
5 => False), -- unused
N_Code_Statement =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Op_Rotate_Left =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Rotate_Right =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Shift_Left =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Shift_Right_Arithmetic =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Op_Shift_Right =>
(1 => True, -- Chars (Name1)
2 => True, -- Left_Opnd (Node2)
3 => True, -- Right_Opnd (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Delta_Constraint =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Delta_Expression (Node3)
4 => True, -- Range_Constraint (Node4)
5 => False), -- unused
N_At_Clause =>
(1 => True, -- Identifier (Node1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Mod_Clause =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Pragmas_Before (List4)
5 => False), -- unused
N_If_Expression =>
(1 => True, -- Expressions (List1)
2 => False, -- Then_Actions (List2-Sem)
3 => False, -- Else_Actions (List3-Sem)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Contract =>
(1 => False, -- Pre_Post_Conditions (Node1)
2 => False, -- Contract_Test_Cases (Node2)
3 => False, -- Classifications (Node3)
4 => False, -- unused
5 => False), -- unused
N_Expanded_Name =>
(1 => True, -- Chars (Name1)
2 => True, -- Selector_Name (Node2)
3 => True, -- Prefix (Node3)
4 => False, -- Entity (Node4-Sem)
5 => False), -- Etype (Node5-Sem)
N_Expression_With_Actions =>
(1 => True, -- Actions (List1)
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- unused
N_Free_Statement =>
(1 => False, -- Storage_Pool (Node1-Sem)
2 => False, -- Procedure_To_Call (Node2-Sem)
3 => True, -- Expression (Node3)
4 => False, -- Actual_Designated_Subtype (Node4-Sem)
5 => False), -- unused
N_Freeze_Entity =>
(1 => True, -- Actions (List1)
2 => False, -- Access_Types_To_Process (Elist2-Sem)
3 => False, -- TSS_Elist (Elist3-Sem)
4 => False, -- Entity (Node4-Sem)
5 => False), -- First_Subtype_Link (Node5-Sem)
N_Freeze_Generic_Entity =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- Entity (Node4-Sem)
5 => False), -- unused
N_Implicit_Label_Declaration =>
(1 => True, -- Defining_Identifier (Node1)
2 => False, -- Label_Construct (Node2-Sem)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Itype_Reference =>
(1 => False, -- Itype (Node1-Sem)
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Raise_Constraint_Error =>
(1 => True, -- Condition (Node1)
2 => False, -- unused
3 => True, -- Reason (Uint3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Raise_Program_Error =>
(1 => True, -- Condition (Node1)
2 => False, -- unused
3 => True, -- Reason (Uint3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Raise_Storage_Error =>
(1 => True, -- Condition (Node1)
2 => False, -- unused
3 => True, -- Reason (Uint3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Push_Constraint_Error_Label =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Push_Program_Error_Label =>
(1 => False, -- Exception_Label
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- Exception_Label
N_Push_Storage_Error_Label =>
(1 => False, -- Exception_Label
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- Exception_Label
N_Pop_Constraint_Error_Label =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Pop_Program_Error_Label =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Pop_Storage_Error_Label =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Reference =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Prefix (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Subprogram_Info =>
(1 => True, -- Identifier (Node1)
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Unchecked_Expression =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => False, -- unused
5 => False), -- Etype (Node5-Sem)
N_Unchecked_Type_Conversion =>
(1 => False, -- unused
2 => False, -- unused
3 => True, -- Expression (Node3)
4 => True, -- Subtype_Mark (Node4)
5 => False), -- Etype (Node5-Sem)
N_Validate_Unchecked_Conversion =>
(1 => False, -- Source_Type (Node1-Sem)
2 => False, -- Target_Type (Node2-Sem)
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
-- Entries for SCIL nodes
N_SCIL_Dispatch_Table_Tag_Init =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- SCIL_Entity (Node4-Sem)
5 => False), -- unused
N_SCIL_Dispatching_Call =>
(1 => False, -- unused
2 => False, -- SCIL_Target_Prim (Node2-Sem)
3 => False, -- unused
4 => False, -- SCIL_Entity (Node4-Sem)
5 => False), -- SCIL_Controlling_Tag (Node5-Sem)
N_SCIL_Membership_Test =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- SCIL_Entity (Node4-Sem)
5 => False), -- SCIL_Tag_Value (Node5-Sem)
-- Entries for Empty, Error and Unused. Even thought these have a Chars
-- field for debugging purposes, they are not really syntactic fields, so
-- we mark all fields as unused.
N_Empty =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Error =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Unused_At_Start =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False), -- unused
N_Unused_At_End =>
(1 => False, -- unused
2 => False, -- unused
3 => False, -- unused
4 => False, -- unused
5 => False)); -- unused
--------------------
-- Inline Pragmas --
--------------------
pragma Inline (ABE_Is_Certain);
pragma Inline (Abort_Present);
pragma Inline (Abortable_Part);
pragma Inline (Abstract_Present);
pragma Inline (Accept_Handler_Records);
pragma Inline (Accept_Statement);
pragma Inline (Access_Definition);
pragma Inline (Access_To_Subprogram_Definition);
pragma Inline (Access_Types_To_Process);
pragma Inline (Actions);
pragma Inline (Activation_Chain_Entity);
pragma Inline (Acts_As_Spec);
pragma Inline (Actual_Designated_Subtype);
pragma Inline (Address_Warning_Posted);
pragma Inline (Aggregate_Bounds);
pragma Inline (Aliased_Present);
pragma Inline (All_Others);
pragma Inline (All_Present);
pragma Inline (Alternatives);
pragma Inline (Ancestor_Part);
pragma Inline (Atomic_Sync_Required);
pragma Inline (Array_Aggregate);
pragma Inline (Aspect_Rep_Item);
pragma Inline (Assignment_OK);
pragma Inline (Associated_Node);
pragma Inline (At_End_Proc);
pragma Inline (Attribute_Name);
pragma Inline (Aux_Decls_Node);
pragma Inline (Backwards_OK);
pragma Inline (Bad_Is_Detected);
pragma Inline (Body_To_Inline);
pragma Inline (Body_Required);
pragma Inline (By_Ref);
pragma Inline (Box_Present);
pragma Inline (Char_Literal_Value);
pragma Inline (Chars);
pragma Inline (Check_Address_Alignment);
pragma Inline (Choice_Parameter);
pragma Inline (Choices);
pragma Inline (Class_Present);
pragma Inline (Classifications);
pragma Inline (Comes_From_Extended_Return_Statement);
pragma Inline (Compile_Time_Known_Aggregate);
pragma Inline (Component_Associations);
pragma Inline (Component_Clauses);
pragma Inline (Component_Definition);
pragma Inline (Component_Items);
pragma Inline (Component_List);
pragma Inline (Component_Name);
pragma Inline (Componentwise_Assignment);
pragma Inline (Condition);
pragma Inline (Condition_Actions);
pragma Inline (Config_Pragmas);
pragma Inline (Constant_Present);
pragma Inline (Constraint);
pragma Inline (Constraints);
pragma Inline (Context_Installed);
pragma Inline (Context_Items);
pragma Inline (Context_Pending);
pragma Inline (Contract_Test_Cases);
pragma Inline (Controlling_Argument);
pragma Inline (Convert_To_Return_False);
pragma Inline (Conversion_OK);
pragma Inline (Corresponding_Aspect);
pragma Inline (Corresponding_Body);
pragma Inline (Corresponding_Formal_Spec);
pragma Inline (Corresponding_Generic_Association);
pragma Inline (Corresponding_Integer_Value);
pragma Inline (Corresponding_Spec);
pragma Inline (Corresponding_Spec_Of_Stub);
pragma Inline (Corresponding_Stub);
pragma Inline (Dcheck_Function);
pragma Inline (Declarations);
pragma Inline (Default_Expression);
pragma Inline (Default_Storage_Pool);
pragma Inline (Default_Name);
pragma Inline (Defining_Identifier);
pragma Inline (Defining_Unit_Name);
pragma Inline (Delay_Alternative);
pragma Inline (Delay_Statement);
pragma Inline (Delta_Expression);
pragma Inline (Digits_Expression);
pragma Inline (Discr_Check_Funcs_Built);
pragma Inline (Discrete_Choices);
pragma Inline (Discrete_Range);
pragma Inline (Discrete_Subtype_Definition);
pragma Inline (Discrete_Subtype_Definitions);
pragma Inline (Discriminant_Specifications);
pragma Inline (Discriminant_Type);
pragma Inline (Do_Accessibility_Check);
pragma Inline (Do_Discriminant_Check);
pragma Inline (Do_Length_Check);
pragma Inline (Do_Division_Check);
pragma Inline (Do_Overflow_Check);
pragma Inline (Do_Range_Check);
pragma Inline (Do_Storage_Check);
pragma Inline (Do_Tag_Check);
pragma Inline (Elaborate_Present);
pragma Inline (Elaborate_All_Desirable);
pragma Inline (Elaborate_All_Present);
pragma Inline (Elaborate_Desirable);
pragma Inline (Elaboration_Boolean);
pragma Inline (Else_Actions);
pragma Inline (Else_Statements);
pragma Inline (Elsif_Parts);
pragma Inline (Enclosing_Variant);
pragma Inline (End_Label);
pragma Inline (End_Span);
pragma Inline (Entity);
pragma Inline (Entity_Or_Associated_Node);
pragma Inline (Entry_Body_Formal_Part);
pragma Inline (Entry_Call_Alternative);
pragma Inline (Entry_Call_Statement);
pragma Inline (Entry_Direct_Name);
pragma Inline (Entry_Index);
pragma Inline (Entry_Index_Specification);
pragma Inline (Etype);
pragma Inline (Exception_Choices);
pragma Inline (Exception_Handlers);
pragma Inline (Exception_Junk);
pragma Inline (Exception_Label);
pragma Inline (Expansion_Delayed);
pragma Inline (Explicit_Actual_Parameter);
pragma Inline (Explicit_Generic_Actual_Parameter);
pragma Inline (Expression);
pragma Inline (Expressions);
pragma Inline (First_Bit);
pragma Inline (First_Inlined_Subprogram);
pragma Inline (First_Name);
pragma Inline (First_Named_Actual);
pragma Inline (First_Real_Statement);
pragma Inline (First_Subtype_Link);
pragma Inline (Float_Truncate);
pragma Inline (Formal_Type_Definition);
pragma Inline (Forwards_OK);
pragma Inline (From_Aspect_Specification);
pragma Inline (From_At_End);
pragma Inline (From_At_Mod);
pragma Inline (From_Default);
pragma Inline (Generic_Associations);
pragma Inline (Generic_Formal_Declarations);
pragma Inline (Generic_Parent);
pragma Inline (Generic_Parent_Type);
pragma Inline (Handled_Statement_Sequence);
pragma Inline (Handler_List_Entry);
pragma Inline (Has_Created_Identifier);
pragma Inline (Has_Dereference_Action);
pragma Inline (Has_Dynamic_Length_Check);
pragma Inline (Has_Dynamic_Range_Check);
pragma Inline (Has_Init_Expression);
pragma Inline (Has_Local_Raise);
pragma Inline (Has_Self_Reference);
pragma Inline (Has_SP_Choice);
pragma Inline (Has_No_Elaboration_Code);
pragma Inline (Has_Pragma_Suppress_All);
pragma Inline (Has_Private_View);
pragma Inline (Has_Relative_Deadline_Pragma);
pragma Inline (Has_Storage_Size_Pragma);
pragma Inline (Has_Wide_Character);
pragma Inline (Has_Wide_Wide_Character);
pragma Inline (Header_Size_Added);
pragma Inline (Hidden_By_Use_Clause);
pragma Inline (High_Bound);
pragma Inline (Identifier);
pragma Inline (Implicit_With);
pragma Inline (Implicit_With_From_Instantiation);
pragma Inline (Interface_List);
pragma Inline (Interface_Present);
pragma Inline (Includes_Infinities);
pragma Inline (Import_Interface_Present);
pragma Inline (In_Assertion_Expression);
pragma Inline (In_Present);
pragma Inline (Inherited_Discriminant);
pragma Inline (Instance_Spec);
pragma Inline (Intval);
pragma Inline (Iterator_Specification);
pragma Inline (Is_Accessibility_Actual);
pragma Inline (Is_Asynchronous_Call_Block);
pragma Inline (Is_Boolean_Aspect);
pragma Inline (Is_Checked);
pragma Inline (Is_Component_Left_Opnd);
pragma Inline (Is_Component_Right_Opnd);
pragma Inline (Is_Controlling_Actual);
pragma Inline (Is_Delayed_Aspect);
pragma Inline (Is_Disabled);
pragma Inline (Is_Dynamic_Coextension);
pragma Inline (Is_Elsif);
pragma Inline (Is_Entry_Barrier_Function);
pragma Inline (Is_Expanded_Build_In_Place_Call);
pragma Inline (Is_Finalization_Wrapper);
pragma Inline (Is_Folded_In_Parser);
pragma Inline (Is_Ignored);
pragma Inline (Is_In_Discriminant_Check);
pragma Inline (Is_Machine_Number);
pragma Inline (Is_Null_Loop);
pragma Inline (Is_Overloaded);
pragma Inline (Is_Power_Of_2_For_Shift);
pragma Inline (Is_Prefixed_Call);
pragma Inline (Is_Protected_Subprogram_Body);
pragma Inline (Is_Static_Coextension);
pragma Inline (Is_Static_Expression);
pragma Inline (Is_Subprogram_Descriptor);
pragma Inline (Is_Task_Allocation_Block);
pragma Inline (Is_Task_Master);
pragma Inline (Iteration_Scheme);
pragma Inline (Itype);
pragma Inline (Kill_Range_Check);
pragma Inline (Last_Bit);
pragma Inline (Last_Name);
pragma Inline (Library_Unit);
pragma Inline (Label_Construct);
pragma Inline (Left_Opnd);
pragma Inline (Limited_View_Installed);
pragma Inline (Limited_Present);
pragma Inline (Literals);
pragma Inline (Local_Raise_Not_OK);
pragma Inline (Local_Raise_Statements);
pragma Inline (Loop_Actions);
pragma Inline (Loop_Parameter_Specification);
pragma Inline (Low_Bound);
pragma Inline (Mod_Clause);
pragma Inline (More_Ids);
pragma Inline (Must_Be_Byte_Aligned);
pragma Inline (Must_Not_Freeze);
pragma Inline (Must_Not_Override);
pragma Inline (Must_Override);
pragma Inline (Name);
pragma Inline (Names);
pragma Inline (Next_Entity);
pragma Inline (Next_Exit_Statement);
pragma Inline (Next_Implicit_With);
pragma Inline (Next_Named_Actual);
pragma Inline (Next_Pragma);
pragma Inline (Next_Rep_Item);
pragma Inline (Next_Use_Clause);
pragma Inline (No_Ctrl_Actions);
pragma Inline (No_Elaboration_Check);
pragma Inline (No_Entities_Ref_In_Spec);
pragma Inline (No_Initialization);
pragma Inline (No_Minimize_Eliminate);
pragma Inline (No_Truncation);
pragma Inline (Null_Present);
pragma Inline (Null_Exclusion_Present);
pragma Inline (Null_Exclusion_In_Return_Present);
pragma Inline (Null_Record_Present);
pragma Inline (Object_Definition);
pragma Inline (Of_Present);
pragma Inline (Original_Discriminant);
pragma Inline (Original_Entity);
pragma Inline (Others_Discrete_Choices);
pragma Inline (Out_Present);
pragma Inline (Parameter_Associations);
pragma Inline (Parameter_Specifications);
pragma Inline (Parameter_List_Truncated);
pragma Inline (Parameter_Type);
pragma Inline (Parent_Spec);
pragma Inline (Position);
pragma Inline (Pragma_Argument_Associations);
pragma Inline (Pragma_Identifier);
pragma Inline (Pragmas_After);
pragma Inline (Pragmas_Before);
pragma Inline (Pre_Post_Conditions);
pragma Inline (Prefix);
pragma Inline (Premature_Use);
pragma Inline (Present_Expr);
pragma Inline (Prev_Ids);
pragma Inline (Print_In_Hex);
pragma Inline (Private_Declarations);
pragma Inline (Private_Present);
pragma Inline (Procedure_To_Call);
pragma Inline (Proper_Body);
pragma Inline (Protected_Definition);
pragma Inline (Protected_Present);
pragma Inline (Raises_Constraint_Error);
pragma Inline (Range_Constraint);
pragma Inline (Range_Expression);
pragma Inline (Real_Range_Specification);
pragma Inline (Realval);
pragma Inline (Reason);
pragma Inline (Record_Extension_Part);
pragma Inline (Redundant_Use);
pragma Inline (Renaming_Exception);
pragma Inline (Result_Definition);
pragma Inline (Return_Object_Declarations);
pragma Inline (Return_Statement_Entity);
pragma Inline (Reverse_Present);
pragma Inline (Right_Opnd);
pragma Inline (Rounded_Result);
pragma Inline (SCIL_Controlling_Tag);
pragma Inline (SCIL_Entity);
pragma Inline (SCIL_Tag_Value);
pragma Inline (SCIL_Target_Prim);
pragma Inline (Scope);
pragma Inline (Select_Alternatives);
pragma Inline (Selector_Name);
pragma Inline (Selector_Names);
pragma Inline (Shift_Count_OK);
pragma Inline (Source_Type);
pragma Inline (Specification);
pragma Inline (Split_PPC);
pragma Inline (Statements);
pragma Inline (Storage_Pool);
pragma Inline (Subpool_Handle_Name);
pragma Inline (Strval);
pragma Inline (Subtype_Indication);
pragma Inline (Subtype_Mark);
pragma Inline (Subtype_Marks);
pragma Inline (Suppress_Assignment_Checks);
pragma Inline (Suppress_Loop_Warnings);
pragma Inline (Synchronized_Present);
pragma Inline (Tagged_Present);
pragma Inline (Target_Type);
pragma Inline (Task_Definition);
pragma Inline (Task_Present);
pragma Inline (Then_Actions);
pragma Inline (Then_Statements);
pragma Inline (Triggering_Alternative);
pragma Inline (Triggering_Statement);
pragma Inline (Treat_Fixed_As_Integer);
pragma Inline (TSS_Elist);
pragma Inline (Type_Definition);
pragma Inline (Unit);
pragma Inline (Unknown_Discriminants_Present);
pragma Inline (Unreferenced_In_Spec);
pragma Inline (Variant_Part);
pragma Inline (Variants);
pragma Inline (Visible_Declarations);
pragma Inline (Used_Operations);
pragma Inline (Was_Originally_Stub);
pragma Inline (Withed_Body);
pragma Inline (Set_ABE_Is_Certain);
pragma Inline (Set_Abort_Present);
pragma Inline (Set_Abortable_Part);
pragma Inline (Set_Abstract_Present);
pragma Inline (Set_Accept_Handler_Records);
pragma Inline (Set_Accept_Statement);
pragma Inline (Set_Access_Definition);
pragma Inline (Set_Access_To_Subprogram_Definition);
pragma Inline (Set_Access_Types_To_Process);
pragma Inline (Set_Actions);
pragma Inline (Set_Activation_Chain_Entity);
pragma Inline (Set_Acts_As_Spec);
pragma Inline (Set_Actual_Designated_Subtype);
pragma Inline (Set_Address_Warning_Posted);
pragma Inline (Set_Aggregate_Bounds);
pragma Inline (Set_Aliased_Present);
pragma Inline (Set_All_Others);
pragma Inline (Set_All_Present);
pragma Inline (Set_Alternatives);
pragma Inline (Set_Ancestor_Part);
pragma Inline (Set_Array_Aggregate);
pragma Inline (Set_Aspect_Rep_Item);
pragma Inline (Set_Assignment_OK);
pragma Inline (Set_Associated_Node);
pragma Inline (Set_At_End_Proc);
pragma Inline (Set_Atomic_Sync_Required);
pragma Inline (Set_Attribute_Name);
pragma Inline (Set_Aux_Decls_Node);
pragma Inline (Set_Backwards_OK);
pragma Inline (Set_Bad_Is_Detected);
pragma Inline (Set_Body_Required);
pragma Inline (Set_Body_To_Inline);
pragma Inline (Set_Box_Present);
pragma Inline (Set_By_Ref);
pragma Inline (Set_Char_Literal_Value);
pragma Inline (Set_Chars);
pragma Inline (Set_Check_Address_Alignment);
pragma Inline (Set_Choice_Parameter);
pragma Inline (Set_Choices);
pragma Inline (Set_Class_Present);
pragma Inline (Set_Classifications);
pragma Inline (Set_Comes_From_Extended_Return_Statement);
pragma Inline (Set_Compile_Time_Known_Aggregate);
pragma Inline (Set_Component_Associations);
pragma Inline (Set_Component_Clauses);
pragma Inline (Set_Component_Definition);
pragma Inline (Set_Component_Items);
pragma Inline (Set_Component_List);
pragma Inline (Set_Component_Name);
pragma Inline (Set_Componentwise_Assignment);
pragma Inline (Set_Condition);
pragma Inline (Set_Condition_Actions);
pragma Inline (Set_Config_Pragmas);
pragma Inline (Set_Constant_Present);
pragma Inline (Set_Constraint);
pragma Inline (Set_Constraints);
pragma Inline (Set_Context_Installed);
pragma Inline (Set_Context_Items);
pragma Inline (Set_Context_Pending);
pragma Inline (Set_Contract_Test_Cases);
pragma Inline (Set_Controlling_Argument);
pragma Inline (Set_Conversion_OK);
pragma Inline (Set_Convert_To_Return_False);
pragma Inline (Set_Corresponding_Aspect);
pragma Inline (Set_Corresponding_Body);
pragma Inline (Set_Corresponding_Formal_Spec);
pragma Inline (Set_Corresponding_Generic_Association);
pragma Inline (Set_Corresponding_Integer_Value);
pragma Inline (Set_Corresponding_Spec);
pragma Inline (Set_Corresponding_Spec_Of_Stub);
pragma Inline (Set_Corresponding_Stub);
pragma Inline (Set_Dcheck_Function);
pragma Inline (Set_Declarations);
pragma Inline (Set_Default_Expression);
pragma Inline (Set_Default_Name);
pragma Inline (Set_Default_Storage_Pool);
pragma Inline (Set_Defining_Identifier);
pragma Inline (Set_Defining_Unit_Name);
pragma Inline (Set_Delay_Alternative);
pragma Inline (Set_Delay_Statement);
pragma Inline (Set_Delta_Expression);
pragma Inline (Set_Digits_Expression);
pragma Inline (Set_Discr_Check_Funcs_Built);
pragma Inline (Set_Discrete_Choices);
pragma Inline (Set_Discrete_Range);
pragma Inline (Set_Discrete_Subtype_Definition);
pragma Inline (Set_Discrete_Subtype_Definitions);
pragma Inline (Set_Discriminant_Specifications);
pragma Inline (Set_Discriminant_Type);
pragma Inline (Set_Do_Accessibility_Check);
pragma Inline (Set_Do_Discriminant_Check);
pragma Inline (Set_Do_Division_Check);
pragma Inline (Set_Do_Length_Check);
pragma Inline (Set_Do_Overflow_Check);
pragma Inline (Set_Do_Range_Check);
pragma Inline (Set_Do_Storage_Check);
pragma Inline (Set_Do_Tag_Check);
pragma Inline (Set_Elaborate_All_Desirable);
pragma Inline (Set_Elaborate_All_Present);
pragma Inline (Set_Elaborate_Desirable);
pragma Inline (Set_Elaborate_Present);
pragma Inline (Set_Elaboration_Boolean);
pragma Inline (Set_Else_Actions);
pragma Inline (Set_Else_Statements);
pragma Inline (Set_Elsif_Parts);
pragma Inline (Set_Enclosing_Variant);
pragma Inline (Set_End_Label);
pragma Inline (Set_End_Span);
pragma Inline (Set_Entity);
pragma Inline (Set_Entry_Body_Formal_Part);
pragma Inline (Set_Entry_Call_Alternative);
pragma Inline (Set_Entry_Call_Statement);
pragma Inline (Set_Entry_Direct_Name);
pragma Inline (Set_Entry_Index);
pragma Inline (Set_Entry_Index_Specification);
pragma Inline (Set_Etype);
pragma Inline (Set_Exception_Choices);
pragma Inline (Set_Exception_Handlers);
pragma Inline (Set_Exception_Junk);
pragma Inline (Set_Exception_Label);
pragma Inline (Set_Expansion_Delayed);
pragma Inline (Set_Explicit_Actual_Parameter);
pragma Inline (Set_Explicit_Generic_Actual_Parameter);
pragma Inline (Set_Expression);
pragma Inline (Set_Expressions);
pragma Inline (Set_First_Bit);
pragma Inline (Set_First_Inlined_Subprogram);
pragma Inline (Set_First_Name);
pragma Inline (Set_First_Named_Actual);
pragma Inline (Set_First_Real_Statement);
pragma Inline (Set_First_Subtype_Link);
pragma Inline (Set_Float_Truncate);
pragma Inline (Set_Formal_Type_Definition);
pragma Inline (Set_Forwards_OK);
pragma Inline (Set_From_Aspect_Specification);
pragma Inline (Set_From_At_End);
pragma Inline (Set_From_At_Mod);
pragma Inline (Set_From_Default);
pragma Inline (Set_Generic_Associations);
pragma Inline (Set_Generic_Formal_Declarations);
pragma Inline (Set_Generic_Parent);
pragma Inline (Set_Generic_Parent_Type);
pragma Inline (Set_Handled_Statement_Sequence);
pragma Inline (Set_Handler_List_Entry);
pragma Inline (Set_Has_Created_Identifier);
pragma Inline (Set_Has_Dereference_Action);
pragma Inline (Set_Has_Dynamic_Length_Check);
pragma Inline (Set_Has_Dynamic_Range_Check);
pragma Inline (Set_Has_Init_Expression);
pragma Inline (Set_Has_Local_Raise);
pragma Inline (Set_Has_No_Elaboration_Code);
pragma Inline (Set_Has_Pragma_Suppress_All);
pragma Inline (Set_Has_Private_View);
pragma Inline (Set_Has_Relative_Deadline_Pragma);
pragma Inline (Set_Has_Self_Reference);
pragma Inline (Set_Has_SP_Choice);
pragma Inline (Set_Has_Storage_Size_Pragma);
pragma Inline (Set_Has_Wide_Character);
pragma Inline (Set_Has_Wide_Wide_Character);
pragma Inline (Set_Header_Size_Added);
pragma Inline (Set_Hidden_By_Use_Clause);
pragma Inline (Set_High_Bound);
pragma Inline (Set_Identifier);
pragma Inline (Set_Implicit_With);
pragma Inline (Set_Import_Interface_Present);
pragma Inline (Set_In_Assertion_Expression);
pragma Inline (Set_In_Present);
pragma Inline (Set_Includes_Infinities);
pragma Inline (Set_Inherited_Discriminant);
pragma Inline (Set_Instance_Spec);
pragma Inline (Set_Interface_List);
pragma Inline (Set_Interface_Present);
pragma Inline (Set_Intval);
pragma Inline (Set_Is_Accessibility_Actual);
pragma Inline (Set_Is_Asynchronous_Call_Block);
pragma Inline (Set_Is_Boolean_Aspect);
pragma Inline (Set_Is_Checked);
pragma Inline (Set_Is_Component_Left_Opnd);
pragma Inline (Set_Is_Component_Right_Opnd);
pragma Inline (Set_Is_Controlling_Actual);
pragma Inline (Set_Is_Delayed_Aspect);
pragma Inline (Set_Is_Disabled);
pragma Inline (Set_Is_Dynamic_Coextension);
pragma Inline (Set_Is_Elsif);
pragma Inline (Set_Is_Entry_Barrier_Function);
pragma Inline (Set_Is_Expanded_Build_In_Place_Call);
pragma Inline (Set_Is_Finalization_Wrapper);
pragma Inline (Set_Is_Folded_In_Parser);
pragma Inline (Set_Is_Ignored);
pragma Inline (Set_Is_In_Discriminant_Check);
pragma Inline (Set_Is_Machine_Number);
pragma Inline (Set_Is_Null_Loop);
pragma Inline (Set_Is_Overloaded);
pragma Inline (Set_Is_Power_Of_2_For_Shift);
pragma Inline (Set_Is_Prefixed_Call);
pragma Inline (Set_Is_Protected_Subprogram_Body);
pragma Inline (Set_Is_Static_Coextension);
pragma Inline (Set_Is_Static_Expression);
pragma Inline (Set_Is_Subprogram_Descriptor);
pragma Inline (Set_Is_Task_Allocation_Block);
pragma Inline (Set_Is_Task_Master);
pragma Inline (Set_Iteration_Scheme);
pragma Inline (Set_Iterator_Specification);
pragma Inline (Set_Itype);
pragma Inline (Set_Kill_Range_Check);
pragma Inline (Set_Label_Construct);
pragma Inline (Set_Last_Bit);
pragma Inline (Set_Last_Name);
pragma Inline (Set_Left_Opnd);
pragma Inline (Set_Library_Unit);
pragma Inline (Set_Limited_Present);
pragma Inline (Set_Limited_View_Installed);
pragma Inline (Set_Literals);
pragma Inline (Set_Local_Raise_Not_OK);
pragma Inline (Set_Local_Raise_Statements);
pragma Inline (Set_Loop_Actions);
pragma Inline (Set_Loop_Parameter_Specification);
pragma Inline (Set_Low_Bound);
pragma Inline (Set_Mod_Clause);
pragma Inline (Set_More_Ids);
pragma Inline (Set_Must_Be_Byte_Aligned);
pragma Inline (Set_Must_Not_Freeze);
pragma Inline (Set_Must_Not_Override);
pragma Inline (Set_Must_Override);
pragma Inline (Set_Name);
pragma Inline (Set_Names);
pragma Inline (Set_Next_Entity);
pragma Inline (Set_Next_Exit_Statement);
pragma Inline (Set_Next_Implicit_With);
pragma Inline (Set_Next_Named_Actual);
pragma Inline (Set_Next_Pragma);
pragma Inline (Set_Next_Rep_Item);
pragma Inline (Set_Next_Use_Clause);
pragma Inline (Set_No_Ctrl_Actions);
pragma Inline (Set_No_Elaboration_Check);
pragma Inline (Set_No_Entities_Ref_In_Spec);
pragma Inline (Set_No_Initialization);
pragma Inline (Set_No_Minimize_Eliminate);
pragma Inline (Set_No_Truncation);
pragma Inline (Set_Null_Exclusion_Present);
pragma Inline (Set_Null_Exclusion_In_Return_Present);
pragma Inline (Set_Null_Present);
pragma Inline (Set_Null_Record_Present);
pragma Inline (Set_Object_Definition);
pragma Inline (Set_Of_Present);
pragma Inline (Set_Original_Discriminant);
pragma Inline (Set_Original_Entity);
pragma Inline (Set_Others_Discrete_Choices);
pragma Inline (Set_Out_Present);
pragma Inline (Set_Parameter_Associations);
pragma Inline (Set_Parameter_List_Truncated);
pragma Inline (Set_Parameter_Specifications);
pragma Inline (Set_Parameter_Type);
pragma Inline (Set_Parent_Spec);
pragma Inline (Set_Position);
pragma Inline (Set_Pragma_Argument_Associations);
pragma Inline (Set_Pragma_Identifier);
pragma Inline (Set_Pragmas_After);
pragma Inline (Set_Pragmas_Before);
pragma Inline (Set_Pre_Post_Conditions);
pragma Inline (Set_Prefix);
pragma Inline (Set_Premature_Use);
pragma Inline (Set_Present_Expr);
pragma Inline (Set_Prev_Ids);
pragma Inline (Set_Print_In_Hex);
pragma Inline (Set_Private_Declarations);
pragma Inline (Set_Private_Present);
pragma Inline (Set_Procedure_To_Call);
pragma Inline (Set_Proper_Body);
pragma Inline (Set_Protected_Definition);
pragma Inline (Set_Protected_Present);
pragma Inline (Set_Raises_Constraint_Error);
pragma Inline (Set_Range_Constraint);
pragma Inline (Set_Range_Expression);
pragma Inline (Set_Real_Range_Specification);
pragma Inline (Set_Realval);
pragma Inline (Set_Reason);
pragma Inline (Set_Record_Extension_Part);
pragma Inline (Set_Redundant_Use);
pragma Inline (Set_Renaming_Exception);
pragma Inline (Set_Result_Definition);
pragma Inline (Set_Return_Object_Declarations);
pragma Inline (Set_Reverse_Present);
pragma Inline (Set_Right_Opnd);
pragma Inline (Set_Rounded_Result);
pragma Inline (Set_SCIL_Controlling_Tag);
pragma Inline (Set_SCIL_Entity);
pragma Inline (Set_SCIL_Tag_Value);
pragma Inline (Set_SCIL_Target_Prim);
pragma Inline (Set_Scope);
pragma Inline (Set_Select_Alternatives);
pragma Inline (Set_Selector_Name);
pragma Inline (Set_Selector_Names);
pragma Inline (Set_Shift_Count_OK);
pragma Inline (Set_Source_Type);
pragma Inline (Set_Split_PPC);
pragma Inline (Set_Statements);
pragma Inline (Set_Storage_Pool);
pragma Inline (Set_Strval);
pragma Inline (Set_Subpool_Handle_Name);
pragma Inline (Set_Subtype_Indication);
pragma Inline (Set_Subtype_Mark);
pragma Inline (Set_Subtype_Marks);
pragma Inline (Set_Suppress_Assignment_Checks);
pragma Inline (Set_Suppress_Loop_Warnings);
pragma Inline (Set_Synchronized_Present);
pragma Inline (Set_TSS_Elist);
pragma Inline (Set_Tagged_Present);
pragma Inline (Set_Target_Type);
pragma Inline (Set_Task_Definition);
pragma Inline (Set_Task_Present);
pragma Inline (Set_Then_Actions);
pragma Inline (Set_Then_Statements);
pragma Inline (Set_Treat_Fixed_As_Integer);
pragma Inline (Set_Triggering_Alternative);
pragma Inline (Set_Triggering_Statement);
pragma Inline (Set_Type_Definition);
pragma Inline (Set_Unit);
pragma Inline (Set_Unknown_Discriminants_Present);
pragma Inline (Set_Unreferenced_In_Spec);
pragma Inline (Set_Used_Operations);
pragma Inline (Set_Variant_Part);
pragma Inline (Set_Variants);
pragma Inline (Set_Visible_Declarations);
pragma Inline (Set_Was_Originally_Stub);
pragma Inline (Set_Withed_Body);
end Sinfo;