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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- A T R E E --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2003, 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Alloc;
with Sinfo; use Sinfo;
with Einfo; use Einfo;
with Types; use Types;
with Snames; use Snames;
with System; use System;
with Table;
with Uintp; use Uintp;
with Urealp; use Urealp;
with Unchecked_Conversion;
package Atree is
-- This package defines the format of the tree used to represent the Ada
-- program internally. Syntactic and semantic information is combined in
-- this tree. There is no separate symbol table structure.
-- WARNING: There is a C version of this package. Any changes to this
-- source file must be properly reflected in the C header file tree.h
-- Package Atree defines the basic structure of the tree and its nodes and
-- provides the basic abstract interface for manipulating the tree. Two
-- other packages use this interface to define the representation of Ada
-- programs using this tree format. The package Sinfo defines the basic
-- representation of the syntactic structure of the program, as output
-- by the parser. The package Entity_Info defines the semantic information
-- which is added to the tree nodes that represent declared entities (i.e.
-- the information which might typically be described in a separate symbol
-- table structure.
-- The front end of the compiler first parses the program and generates a
-- tree that is simply a syntactic representation of the program in abstract
-- syntax tree format. Subsequent processing in the front end traverses the
-- tree, transforming it in various ways and adding semantic information.
----------------------------------------
-- Definitions of Fields in Tree Node --
----------------------------------------
-- The representation of the tree is completely hidden, using a functional
-- interface for accessing and modifying the contents of nodes. Logically
-- a node contains a number of fields, much as though the nodes were
-- defined as a record type. The fields in a node are as follows:
-- Nkind Indicates the kind of the node. This field is present
-- in all nodes. The type is Node_Kind, which is declared
-- in the package Sinfo.
-- Sloc Location (Source_Ptr) of the corresponding token
-- in the Source buffer. The individual node definitions
-- show which token is referenced by this pointer.
-- In_List A flag used to indicate if the node is a member
-- of a node list.
-- Rewrite_Sub A flag set if the node has been rewritten using
-- the Rewrite procedure. The original value of the
-- node is retrievable with Original_Node.
-- Rewrite_Ins A flag set if a node is marked as a rewrite inserted
-- node as a result of a call to Mark_Rewrite_Insertion.
-- Paren_Count A 2-bit count used on expression nodes to indicate
-- the level of parentheses. Up to 3 levels can be
-- accomodated. Anything more than 3 levels is treated
-- as 3 levels (conformance tests that complain about
-- this are hereby deemed pathological!) Set to zero
-- for non-subexpression nodes.
-- Comes_From_Source
-- This flag is present in all nodes. It is set if the
-- node is built by the scanner or parser, and clear if
-- the node is built by the analyzer or expander. It
-- indicates that the node corresponds to a construct
-- that appears in the original source program.
-- Analyzed This flag is present in all nodes. It is set when
-- a node is analyzed, and is used to avoid analyzing
-- the same node twice. Analysis includes expansion if
-- expansion is active, so in this case if the flag is
-- set it means the node has been analyzed and expanded.
-- Error_Posted This flag is present in all nodes. It is set when
-- an error message is posted which is associated with
-- the flagged node. This is used to avoid posting more
-- than one message on the same node.
-- Field1
-- Field2
-- Field3
-- Field4
-- Field5 Five fields holding Union_Id values
-- Char_CodeN Synonym for FieldN typed as Char_Code
-- ElistN Synonym for FieldN typed as Elist_Id
-- ListN Synonym for FieldN typed as List_Id
-- NameN Synonym for FieldN typed as Name_Id
-- NodeN Synonym for FieldN typed as Node_Id
-- StrN Synonym for FieldN typed as String_Id
-- UintN Synonym for FieldN typed as Uint (Empty = Uint_0)
-- UrealN Synonym for FieldN typed as Ureal
-- Note: the actual usage of FieldN (i.e. whether it contains a Char_Code,
-- Elist_Id, List_Id, Name_Id, Node_Id, String_Id, Uint or Ureal), depends
-- on the value in Nkind. Generally the access to this field is always via
-- the functional interface, so the field names Char_CodeN, ElistN, ListN,
-- NameN, NodeN, StrN, UintN and UrealN are used only in the bodies of the
-- access functions (i.e. in the bodies of Sinfo and Einfo). These access
-- functions contain debugging code that checks that the use is consistent
-- with Nkind and Ekind values.
-- However, in specialized circumstances (examples are the circuit in
-- generic instantiation to copy trees, and in the tree dump routine),
-- it is useful to be able to do untyped traversals, and an internal
-- package in Atree allows for direct untyped accesses in such cases.
-- Flag4 Fifteen Boolean flags (use depends on Nkind and
-- Flag5 Ekind, as described for FieldN). Again the access
-- Flag6 is usually via subprograms in Sinfo and Einfo which
-- Flag7 provide high-level synonyms for these flags, and
-- Flag8 contain debugging code that checks that the values
-- Flag9 in Nkind and Ekind are appropriate for the access.
-- Flag10
-- Flag11 Note that Flag1-3 are missing from this list. The
-- Flag12 first three flag positions are reserved for the
-- Flag13 standard flags (Comes_From_Source, Error_Posted,
-- Flag14 and Analyzed)
-- Flag15
-- Flag16
-- Flag17
-- Flag18
-- Link For a node, points to the Parent. For a list, points
-- to the list header. Note that in the latter case, a
-- client cannot modify the link field. This field is
-- private to the Atree package (but is also modified
-- by the Nlists package).
-- The following additional fields are present in extended nodes used
-- for entities (Nkind in N_Entity).
-- Ekind Entity type. This field indicates the type of the
-- entity, it is of type Entity_Kind which is defined
-- in package Einfo.
-- Flag19 133 additional flags
-- ...
-- Flag151
-- Convention Entity convention (Convention_Id value)
-- Field6 Additional Union_Id value stored in tree
-- Node6 Synonym for Field6 typed as Node_Id
-- Elist6 Synonym for Field6 typed as Elist_Id
-- Uint6 Synonym for Field6 typed as Uint (Empty = Uint_0)
-- Similar definitions for Field7 to Field23 (and Node7-Node23,
-- Elist7-Elist23, Uint7-Uint23, Ureal7-Ureal23). Note that not all
-- these functions are defined, only the ones that are actually used.
type Paren_Count_Type is mod 4;
for Paren_Count_Type'Size use 2;
-- Type used for Paren_Count field
function Last_Node_Id return Node_Id;
pragma Inline (Last_Node_Id);
-- Returns Id of last allocated node Id
function Nodes_Address return System.Address;
-- Return address of Nodes table (used in Back_End for Gigi call)
function Num_Nodes return Nat;
-- Total number of nodes allocated, where an entity counts as a single
-- node. This count is incremented every time a node or entity is
-- allocated, and decremented every time a node or entity is deleted.
-- This value is used by Xref and by Treepr to allocate hash tables of
-- suitable size for hashing Node_Id values.
-----------------------
-- Use of Empty Node --
-----------------------
-- The special Node_Id Empty is used to mark missing fields. Whenever the
-- syntax has an optional component, then the corresponding field will be
-- set to Empty if the component is missing.
-- Note: Empty is not used to describe an empty list. Instead in this
-- case the node field contains a list which is empty, and these cases
-- should be distinguished (essentially from a type point of view, Empty
-- is a Node, and is thus not a list).
-- Note: Empty does in fact correspond to an allocated node. Only the
-- Nkind field of this node may be referenced. It contains N_Empty, which
-- uniquely identifies the empty case. This allows the Nkind field to be
-- dereferenced before the check for Empty which is sometimes useful.
-----------------------
-- Use of Error Node --
-----------------------
-- The Error node is used during syntactic and semantic analysis to
-- indicate that the corresponding piece of syntactic structure or
-- semantic meaning cannot properly be represented in the tree because
-- of an illegality in the program.
-- If an Error node is encountered, then you know that a previous
-- illegality has been detected. The proper reaction should be to
-- avoid posting related cascaded error messages, and to propagate
-- the error node if necessary.
------------------------
-- Current_Error_Node --
------------------------
-- The current error node is a global location indicating the current
-- node that is being processed for the purposes of placing a compiler
-- abort message. This is not necessarily perfectly accurate, it is
-- just a reasonably accurate best guess. It is used to output the
-- source location in the abort message by Comperr, and also to
-- implement the d3 debugging flag. This is also used by Rtsfind
-- to generate error messages for high integrity mode.
-- There are two ways this gets set. During parsing, when new source
-- nodes are being constructed by calls to New_Node and New_Entity,
-- either one of these calls sets Current_Error_Node to the newly
-- created node. During semantic analysis, this mechanism is not
-- used, and instead Current_Error_Node is set by the subprograms in
-- Debug_A that mark the start and end of analysis/expansion of a
-- node in the tree.
Current_Error_Node : Node_Id;
-- Node to place error messages
-------------------------------
-- Default Setting of Fields --
-------------------------------
-- Nkind is set to N_Unused_At_Start
-- Ekind is set to E_Void
-- Sloc is always set, there is no default value
-- Field1-5 fields are set to Empty
-- Field6-22 fields in extended nodes are set to Empty
-- Parent is set to Empty
-- All Boolean flag fields are set to False
-- Note: the value Empty is used in Field1-Field17 to indicate a null node.
-- The usage varies. The common uses are to indicate absence of an
-- optional clause or a completely unused Field1-17 field.
-------------------------------------
-- Use of Synonyms for Node Fields --
-------------------------------------
-- A subpackage Atree.Unchecked_Access provides routines for reading and
-- writing the fields defined above (Field1-17, Node1-17, Flag1-88 etc).
-- These unchecked access routines can be used for untyped traversals.
-- In addition they are used in the implementations of the Sinfo and
-- Einfo packages. These packages both provide logical synonyms for
-- the generic fields, together with an appropriate set of access routines.
-- Normally access to information within tree nodes uses these synonyms,
-- providing a high level typed interface to the tree information.
--------------------------------------------------
-- Node Allocation and Modification Subprograms --
--------------------------------------------------
-- Generally the parser builds the tree and then it is further decorated
-- (e.g. by setting the entity fields), but not fundamentally modified.
-- However, there are cases in which the tree must be restructured by
-- adding and rearranging nodes, as a result of disambiguating cases
-- which the parser could not parse correctly, and adding additional
-- semantic information (e.g. making constraint checks explicit). The
-- following subprograms are used for constructing the tree in the first
-- place, and then for subsequent modifications as required
procedure Initialize;
-- Called at the start of compilation to initialize the allocation of
-- the node and list tables and make the standard entries for Empty,
-- Error and Error_List. Note that Initialize must not be called if
-- Tree_Read is used.
procedure Lock;
-- Called before the backend is invoked to lock the nodes table
procedure Tree_Read;
-- Initializes internal tables from current tree file using Tree_Read.
-- Note that Initialize should not be called if Tree_Read is used.
-- Tree_Read includes all necessary initialization.
procedure Tree_Write;
-- Writes out internal tables to current tree file using Tree_Write
function New_Node
(New_Node_Kind : Node_Kind;
New_Sloc : Source_Ptr)
return Node_Id;
-- Allocates a completely new node with the given node type and source
-- location values. All other fields are set to their standard defaults:
--
-- Empty for all FieldN fields
-- False for all FlagN fields
--
-- The usual approach is to build a new node using this function and
-- then, using the value returned, use the Set_xxx functions to set
-- fields of the node as required. New_Node can only be used for
-- non-entity nodes, i.e. it never generates an extended node.
--
-- If we are currently parsing, as indicated by a previous call to
-- Set_Comes_From_Source_Default (True), then this call also resets
-- the value of Current_Error_Node.
function New_Entity
(New_Node_Kind : Node_Kind;
New_Sloc : Source_Ptr)
return Entity_Id;
-- Similar to New_Node, except that it is used only for entity nodes
-- and returns an extended node.
procedure Set_Comes_From_Source_Default (Default : Boolean);
-- Sets value of Comes_From_Source flag to be used in all subsequent
-- New_Node and New_Entity calls until another call to this procedure
-- changes the default. This value is set True during parsing and
-- False during semantic analysis. This is also used to determine
-- if New_Node and New_Entity should set Current_Error_Node.
function Get_Comes_From_Source_Default return Boolean;
pragma Inline (Get_Comes_From_Source_Default);
-- Gets the current value of the Comes_From_Source flag
procedure Preserve_Comes_From_Source (NewN, OldN : Node_Id);
pragma Inline (Preserve_Comes_From_Source);
-- When a node is rewritten, it is sometimes appropriate to preserve the
-- original comes from source indication. This is true when the rewrite
-- essentially corresponds to a transformation corresponding exactly to
-- semantics in the reference manual. This procedure copies the setting
-- of Comes_From_Source from OldN to NewN.
function Has_Extension (N : Node_Id) return Boolean;
pragma Inline (Has_Extension);
-- Returns True if the given node has an extension (i.e. was created by
-- a call to New_Entity rather than New_Node, and Nkind is in N_Entity)
procedure Change_Node (N : Node_Id; New_Node_Kind : Node_Kind);
-- This procedure replaces the given node by setting its Nkind field to
-- the indicated value and resetting all other fields to their default
-- values except for Sloc, which is unchanged, and the Parent pointer
-- and list links, which are also unchanged. All other information in
-- the original node is lost. The new node has an extension if the
-- original node had an extension.
procedure Copy_Node (Source : Node_Id; Destination : Node_Id);
-- Copy the entire contents of the source node to the destination node.
-- The contents of the source node is not affected. If the source node
-- has an extension, then the destination must have an extension also.
-- The parent pointer of the destination and its list link, if any, are
-- not affected by the copy. Note that parent pointers of descendents
-- are not adjusted, so the descendents of the destination node after
-- the Copy_Node is completed have dubious parent pointers.
function New_Copy (Source : Node_Id) return Node_Id;
-- This function allocates a completely new node, and then initializes
-- it by copying the contents of the source node into it. The contents
-- of the source node is not affected. The target node is always marked
-- as not being in a list (even if the source is a list member). The
-- new node will have an extension if the source has an extension.
-- New_Copy (Empty) returns Empty and New_Copy (Error) returns Error.
-- Note that, unlike New_Copy_Tree, New_Copy does not recursively copy any
-- descendents, so in general parent pointers are not set correctly for
-- the descendents of the copied node. Both normal and extended nodes
-- (entities) may be copied using New_Copy.
function Relocate_Node (Source : Node_Id) return Node_Id;
-- Source is a non-entity node that is to be relocated. A new node is
-- allocated and the contents of Source are copied to this node using
-- Copy_Node. The parent pointers of descendents of the node are then
-- adjusted to point to the relocated copy. The original node is not
-- modified, but the parent pointers of its descendents are no longer
-- valid. This routine is used in conjunction with the tree rewrite
-- routines (see descriptions of Replace/Rewrite).
--
-- Note that the resulting node has the same parent as the source
-- node, and is thus still attached to the tree. It is valid for
-- Source to be Empty, in which case Relocate_Node simply returns
-- Empty as the result.
function New_Copy_Tree
(Source : Node_Id;
Map : Elist_Id := No_Elist;
New_Sloc : Source_Ptr := No_Location;
New_Scope : Entity_Id := Empty)
return Node_Id;
-- Given a node that is the root of a subtree, Copy_Tree copies the entire
-- syntactic subtree, including recursively any descendents whose parent
-- field references a copied node (descendents not linked to a copied node
-- by the parent field are not copied, instead the copied tree references
-- the same descendent as the original in this case, which is appropriate
-- for non-syntactic fields such as Etype). The parent pointers in the
-- copy are properly set. Copy_Tree (Empty/Error) returns Empty/Error.
-- The one exception to the rule of not copying semantic fields is that
-- any implicit types attached to the subtree are duplicated, so that
-- the copy contains a distinct set of implicit type entities. The Map
-- argument, if set to a non-empty Elist, specifies a set of mappings
-- to be applied to entities in the tree. The map has the form:
--
-- old entity 1
-- new entity to replace references to entity 1
-- old entity 2
-- new entity to replace references to entity 2
-- ...
--
-- The call destroys the contents of Map in this case
--
-- The parameter New_Sloc, if set to a value other than No_Location, is
-- used as the Sloc value for all nodes in the new copy. If New_Sloc is
-- set to its default value No_Location, then the Sloc values of the
-- nodes in the copy are simply copied from the corresponding original.
--
-- The Comes_From_Source indication is unchanged if New_Sloc is set to
-- the default No_Location value, but is reset if New_Sloc is given, since
-- in this case the result clearly is neither a source node or an exact
-- copy of a source node.
--
-- The parameter New_Scope, if set to a value other than Empty, is the
-- value to use as the Scope for any Itypes that are copied. The most
-- typical value for this parameter, if given, is Current_Scope.
function Copy_Separate_Tree (Source : Node_Id) return Node_Id;
-- Given a node that is the root of a subtree, Copy_Separate_Tree copies
-- the entire syntactic subtree, including recursively any descendants
-- whose parent field references a copied node (descendants not linked to
-- a copied node by the parent field are also copied.) The parent pointers
-- in the copy are properly set. Copy_Separate_Tree (Empty/Error) returns
-- Empty/Error. The semantic fields are not copied and the new subtree
-- does not share any entity with source subtree.
-- But the code *does* copy semantic fields, and the description above
-- is in any case unclear on this point ??? (RBKD)
procedure Exchange_Entities (E1 : Entity_Id; E2 : Entity_Id);
-- Exchange the contents of two entities. The parent pointers are switched
-- as well as the Defining_Identifier fields in the parents, so that the
-- entities point correctly to their original parents. The effect is thus
-- to leave the tree completely unchanged in structure, except that the
-- entity ID values of the two entities are interchanged. Neither of the
-- two entities may be list members.
procedure Delete_Node (Node : Node_Id);
-- The node, which must not be a list member, is deleted from the tree and
-- its type is set to N_Unused_At_End. It is an error (not necessarily
-- detected) to reference this node after it has been deleted. The
-- implementation of the body of Atree is free to reuse the node to
-- satisfy future node allocation requests, but is not required to do so.
procedure Delete_Tree (Node : Node_Id);
-- The entire syntactic subtree referenced by Node (i.e. the given node
-- and all its syntactic descendents) are deleted as described above for
-- Delete_Node.
function Extend_Node (Node : Node_Id) return Entity_Id;
-- This function returns a copy of its input node with an extension
-- added. The fields of the extension are set to Empty. Due to the way
-- extensions are handled (as two consecutive array elements), it may
-- be necessary to reallocate the node, so that the returned value is
-- not the same as the input value, but where possible the returned
-- value will be the same as the input value (i.e. the extension will
-- occur in place). It is the caller's responsibility to ensure that
-- any pointers to the original node are appropriately updated. This
-- function is used only by Sinfo.CN to change nodes into their
-- corresponding entities.
type Traverse_Result is (OK, OK_Orig, Skip, Abandon);
-- This is the type of the result returned by the Process function passed
-- to Traverse_Func and Traverse_Proc and also the type of the result of
-- Traverse_Func itself. See descriptions below for details.
generic
with function Process (N : Node_Id) return Traverse_Result is <>;
function Traverse_Func (Node : Node_Id) return Traverse_Result;
-- This is a generic function that, given the parent node for a subtree,
-- traverses all syntactic nodes of this tree, calling the given function
-- Process on each one. The traversal is controlled as follows by the
-- result returned by Process:
-- OK The traversal continues normally with the syntactic
-- children of the node just processed.
-- OK_Orig The traversal continues normally with the syntactic
-- children of the original node of the node just processed.
-- Skip The children of the node just processed are skipped and
-- excluded from the traversal, but otherwise processing
-- continues elsewhere in the tree.
-- Abandon The entire traversal is immediately abandoned, and the
-- original call to Traverse returns Abandon.
-- The result returned by Traverse is Abandon if processing was terminated
-- by a call to Process returning Abandon, otherwise it is OK (meaning that
-- all calls to process returned either OK or Skip).
generic
with function Process (N : Node_Id) return Traverse_Result is <>;
procedure Traverse_Proc (Node : Node_Id);
pragma Inline (Traverse_Proc);
-- This is similar to Traverse_Func except that no result is returned,
-- i.e. Traverse_Func is called and the result is simply discarded.
---------------------------
-- 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.
function Nkind (N : Node_Id) return Node_Kind;
pragma Inline (Nkind);
function Analyzed (N : Node_Id) return Boolean;
pragma Inline (Analyzed);
function Comes_From_Source (N : Node_Id) return Boolean;
pragma Inline (Comes_From_Source);
function Error_Posted (N : Node_Id) return Boolean;
pragma Inline (Error_Posted);
function Sloc (N : Node_Id) return Source_Ptr;
pragma Inline (Sloc);
function Paren_Count (N : Node_Id) return Paren_Count_Type;
pragma Inline (Paren_Count);
function Parent (N : Node_Id) return Node_Id;
pragma Inline (Parent);
-- Returns the parent of a node if the node is not a list member, or
-- else the parent of the list containing the node if the node is a
-- list member.
function No (N : Node_Id) return Boolean;
pragma Inline (No);
-- Tests given Id for equality with the Empty node. This allows notations
-- like "if No (Variant_Part)" as opposed to "if Variant_Part = Empty".
function Present (N : Node_Id) return Boolean;
pragma Inline (Present);
-- Tests given Id for inequality with the Empty node. This allows notations
-- like "if Present (Statement)" as opposed to "if Statement /= Empty".
-----------------------------
-- Entity Access Functions --
-----------------------------
-- The following functions apply only to Entity_Id values, i.e.
-- to extended nodes.
function Ekind (E : Entity_Id) return Entity_Kind;
pragma Inline (Ekind);
function Convention (E : Entity_Id) return Convention_Id;
pragma Inline (Convention);
----------------------------
-- Node Update Procedures --
----------------------------
-- The following functions set a specified field in the node whose Id is
-- passed as the first argument. The second parameter is the new value
-- to be set in the specified field. Note that Set_Nkind is in the next
-- section, since its use is restricted.
procedure Set_Sloc (N : Node_Id; Val : Source_Ptr);
pragma Inline (Set_Sloc);
procedure Set_Paren_Count (N : Node_Id; Val : Paren_Count_Type);
pragma Inline (Set_Paren_Count);
procedure Set_Parent (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Parent);
procedure Set_Analyzed (N : Node_Id; Val : Boolean := True);
pragma Inline (Set_Analyzed);
procedure Set_Error_Posted (N : Node_Id; Val : Boolean := True);
pragma Inline (Set_Error_Posted);
procedure Set_Comes_From_Source (N : Node_Id; Val : Boolean);
pragma Inline (Set_Comes_From_Source);
-- Note that this routine is very rarely used, since usually the
-- default mechanism provided sets the right value, but in some
-- unusual cases, the value needs to be reset (e.g. when a source
-- node is copied, and the copy must not have Comes_From_Source set.
------------------------------
-- Entity Update Procedures --
------------------------------
-- The following procedures apply only to Entity_Id values, i.e.
-- to extended nodes.
procedure Set_Ekind (E : Entity_Id; Val : Entity_Kind);
pragma Inline (Set_Ekind);
procedure Set_Convention (E : Entity_Id; Val : Convention_Id);
pragma Inline (Set_Convention);
---------------------------
-- Tree Rewrite Routines --
---------------------------
-- During the compilation process it is necessary in a number of situations
-- to rewrite the tree. In some cases, such rewrites do not affect the
-- structure of the tree, for example, when an indexed component node is
-- replaced by the corresponding call node (the parser cannot distinguish
-- between these two cases).
-- In other situations, the rewrite does affect the structure of the
-- tree. Examples are the replacement of a generic instantiation by the
-- instantiated spec and body, and the static evaluation of expressions.
-- If such structural modifications are done by the expander, there are
-- no difficulties, since the form of the tree after the expander has no
-- special significance, except as input to the backend of the compiler.
-- However, if these modifications are done by the semantic phase, then
-- it is important that they be done in a manner which allows the original
-- tree to be preserved. This is because tools like pretty printers need
-- to have this original tree structure available.
-- The subprograms in this section allow rewriting of the tree by either
-- insertion of new nodes in an existing list, or complete replacement of
-- a subtree. The resulting tree for most purposes looks as though it has
-- been really changed, and there is no trace of the original. However,
-- special subprograms, also defined in this section, allow the original
-- tree to be reconstructed if necessary.
-- For tree modifications done in the expander, it is permissible to
-- destroy the original tree, although it is also allowable to use the
-- tree rewrite routines where it is convenient to do so.
procedure Mark_Rewrite_Insertion (New_Node : Node_Id);
pragma Inline (Mark_Rewrite_Insertion);
-- This procedure marks the given node as an insertion made during a tree
-- rewriting operation. Only the root needs to be marked. The call does
-- not do the actual insertion, which must be done using one of the normal
-- list insertion routines. The node is treated normally in all respects
-- except for its response to Is_Rewrite_Insertion. The function of these
-- calls is to be able to get an accurate original tree. This helps the
-- accuracy of Sprint.Sprint_Node, and in particular, when stubs are being
-- generated, it is essential that the original tree be accurate.
function Is_Rewrite_Insertion (Node : Node_Id) return Boolean;
pragma Inline (Is_Rewrite_Insertion);
-- Tests whether the given node was marked using Set_Rewrite_Insert. This
-- is used in reconstructing the original tree (where such nodes are to
-- be eliminated from the reconstructed tree).
procedure Rewrite (Old_Node, New_Node : Node_Id);
-- This is used when a complete subtree is to be replaced. Old_Node is the
-- root of the old subtree to be replaced, and New_Node is the root of the
-- newly constructed replacement subtree. The actual mechanism is to swap
-- the contents of these two nodes fixing up the parent pointers of the
-- replaced node (we do not attempt to preserve parent pointers for the
-- original node). Neither Old_Node nor New_Node can be extended nodes.
--
-- Note: New_Node may not contain references to Old_Node, for example as
-- descendents, since the rewrite would make such references invalid. If
-- New_Node does need to reference Old_Node, then these references should
-- be to a relocated copy of Old_Node (see Relocate_Node procedure).
--
-- Note: The Original_Node function applied to Old_Node (which has now
-- been replaced by the contents of New_Node), can be used to obtain the
-- original node, i.e. the old contents of Old_Node.
procedure Replace (Old_Node, New_Node : Node_Id);
-- This is similar to Rewrite, except that the old value of Old_Node is
-- not saved, and the New_Node is deleted after the replace, since it
-- is assumed that it can no longer be legitimately needed. The flag
-- Is_Rewrite_Susbtitute will be False for the resulting node, unless
-- it was already true on entry, and Original_Node will not return the
-- original contents of the Old_Node, but rather the New_Node value (unless
-- Old_Node had already been rewritten using Rewrite). Replace also
-- preserves the setting of Comes_From_Source.
--
-- Note, New_Node may not contain references to Old_Node, for example as
-- descendents, since the rewrite would make such references invalid. If
-- New_Node does need to reference Old_Node, then these references should
-- be to a relocated copy of Old_Node (see Relocate_Node procedure).
--
-- Replace is used in certain circumstances where it is desirable to
-- suppress any history of the rewriting operation. Notably, it is used
-- when the parser has mis-classified a node (e.g. a task entry call
-- that the parser has parsed as a procedure call).
function Is_Rewrite_Substitution (Node : Node_Id) return Boolean;
pragma Inline (Is_Rewrite_Substitution);
-- Return True iff Node has been rewritten (i.e. if Node is the root
-- of a subtree which was installed using Rewrite).
function Original_Node (Node : Node_Id) return Node_Id;
pragma Inline (Original_Node);
-- If Node has not been rewritten, then returns its input argument
-- unchanged, else returns the Node for the original subtree.
--
-- Note: Parents are not preserved in original tree nodes that are
-- retrieved in this way (i.e. their children may have children whose
-- pointers which reference some other node).
-- Note: there is no direct mechanism for deleting an original node (in
-- a manner that can be reversed later). One possible approach is to use
-- Rewrite to substitute a null statement for the node to be deleted.
-----------------------------------
-- Generic Field Access Routines --
-----------------------------------
-- This subpackage provides the functions for accessing and procedures
-- for setting fields that are normally referenced by their logical
-- synonyms defined in packages Sinfo and Einfo. As previously
-- described the implementations of these packages use the package
-- Atree.Unchecked_Access.
package Unchecked_Access is
-- Functions to allow interpretation of Union_Id values as Uint
-- and Ureal values
function To_Union is new Unchecked_Conversion (Uint, Union_Id);
function To_Union is new Unchecked_Conversion (Ureal, Union_Id);
function From_Union is new Unchecked_Conversion (Union_Id, Uint);
function From_Union is new Unchecked_Conversion (Union_Id, Ureal);
-- Functions to fetch contents of indicated field. It is an error
-- to attempt to read the value of a field which is not present.
function Field1 (N : Node_Id) return Union_Id;
pragma Inline (Field1);
function Field2 (N : Node_Id) return Union_Id;
pragma Inline (Field2);
function Field3 (N : Node_Id) return Union_Id;
pragma Inline (Field3);
function Field4 (N : Node_Id) return Union_Id;
pragma Inline (Field4);
function Field5 (N : Node_Id) return Union_Id;
pragma Inline (Field5);
function Field6 (N : Node_Id) return Union_Id;
pragma Inline (Field6);
function Field7 (N : Node_Id) return Union_Id;
pragma Inline (Field7);
function Field8 (N : Node_Id) return Union_Id;
pragma Inline (Field8);
function Field9 (N : Node_Id) return Union_Id;
pragma Inline (Field9);
function Field10 (N : Node_Id) return Union_Id;
pragma Inline (Field10);
function Field11 (N : Node_Id) return Union_Id;
pragma Inline (Field11);
function Field12 (N : Node_Id) return Union_Id;
pragma Inline (Field12);
function Field13 (N : Node_Id) return Union_Id;
pragma Inline (Field13);
function Field14 (N : Node_Id) return Union_Id;
pragma Inline (Field14);
function Field15 (N : Node_Id) return Union_Id;
pragma Inline (Field15);
function Field16 (N : Node_Id) return Union_Id;
pragma Inline (Field16);
function Field17 (N : Node_Id) return Union_Id;
pragma Inline (Field17);
function Field18 (N : Node_Id) return Union_Id;
pragma Inline (Field18);
function Field19 (N : Node_Id) return Union_Id;
pragma Inline (Field19);
function Field20 (N : Node_Id) return Union_Id;
pragma Inline (Field20);
function Field21 (N : Node_Id) return Union_Id;
pragma Inline (Field21);
function Field22 (N : Node_Id) return Union_Id;
pragma Inline (Field22);
function Field23 (N : Node_Id) return Union_Id;
pragma Inline (Field23);
function Node1 (N : Node_Id) return Node_Id;
pragma Inline (Node1);
function Node2 (N : Node_Id) return Node_Id;
pragma Inline (Node2);
function Node3 (N : Node_Id) return Node_Id;
pragma Inline (Node3);
function Node4 (N : Node_Id) return Node_Id;
pragma Inline (Node4);
function Node5 (N : Node_Id) return Node_Id;
pragma Inline (Node5);
function Node6 (N : Node_Id) return Node_Id;
pragma Inline (Node6);
function Node7 (N : Node_Id) return Node_Id;
pragma Inline (Node7);
function Node8 (N : Node_Id) return Node_Id;
pragma Inline (Node8);
function Node9 (N : Node_Id) return Node_Id;
pragma Inline (Node9);
function Node10 (N : Node_Id) return Node_Id;
pragma Inline (Node10);
function Node11 (N : Node_Id) return Node_Id;
pragma Inline (Node11);
function Node12 (N : Node_Id) return Node_Id;
pragma Inline (Node12);
function Node13 (N : Node_Id) return Node_Id;
pragma Inline (Node13);
function Node14 (N : Node_Id) return Node_Id;
pragma Inline (Node14);
function Node15 (N : Node_Id) return Node_Id;
pragma Inline (Node15);
function Node16 (N : Node_Id) return Node_Id;
pragma Inline (Node16);
function Node17 (N : Node_Id) return Node_Id;
pragma Inline (Node17);
function Node18 (N : Node_Id) return Node_Id;
pragma Inline (Node18);
function Node19 (N : Node_Id) return Node_Id;
pragma Inline (Node19);
function Node20 (N : Node_Id) return Node_Id;
pragma Inline (Node20);
function Node21 (N : Node_Id) return Node_Id;
pragma Inline (Node21);
function Node22 (N : Node_Id) return Node_Id;
pragma Inline (Node22);
function Node23 (N : Node_Id) return Node_Id;
pragma Inline (Node23);
function List1 (N : Node_Id) return List_Id;
pragma Inline (List1);
function List2 (N : Node_Id) return List_Id;
pragma Inline (List2);
function List3 (N : Node_Id) return List_Id;
pragma Inline (List3);
function List4 (N : Node_Id) return List_Id;
pragma Inline (List4);
function List5 (N : Node_Id) return List_Id;
pragma Inline (List5);
function List10 (N : Node_Id) return List_Id;
pragma Inline (List10);
function List14 (N : Node_Id) return List_Id;
pragma Inline (List14);
function Elist2 (N : Node_Id) return Elist_Id;
pragma Inline (Elist2);
function Elist3 (N : Node_Id) return Elist_Id;
pragma Inline (Elist3);
function Elist4 (N : Node_Id) return Elist_Id;
pragma Inline (Elist4);
function Elist8 (N : Node_Id) return Elist_Id;
pragma Inline (Elist8);
function Elist13 (N : Node_Id) return Elist_Id;
pragma Inline (Elist13);
function Elist15 (N : Node_Id) return Elist_Id;
pragma Inline (Elist15);
function Elist16 (N : Node_Id) return Elist_Id;
pragma Inline (Elist16);
function Elist18 (N : Node_Id) return Elist_Id;
pragma Inline (Elist18);
function Elist21 (N : Node_Id) return Elist_Id;
pragma Inline (Elist21);
function Elist23 (N : Node_Id) return Elist_Id;
pragma Inline (Elist23);
function Name1 (N : Node_Id) return Name_Id;
pragma Inline (Name1);
function Name2 (N : Node_Id) return Name_Id;
pragma Inline (Name2);
function Char_Code2 (N : Node_Id) return Char_Code;
pragma Inline (Char_Code2);
function Str3 (N : Node_Id) return String_Id;
pragma Inline (Str3);
-- Note: the following Uintnn functions have a special test for
-- the Field value being Empty. If an Empty value is found then
-- Uint_0 is returned. This avoids the rather tricky requirement
-- of initializing all Uint fields in nodes and entities.
function Uint3 (N : Node_Id) return Uint;
pragma Inline (Uint3);
function Uint4 (N : Node_Id) return Uint;
pragma Inline (Uint4);
function Uint5 (N : Node_Id) return Uint;
pragma Inline (Uint5);
function Uint8 (N : Node_Id) return Uint;
pragma Inline (Uint8);
function Uint9 (N : Node_Id) return Uint;
pragma Inline (Uint9);
function Uint10 (N : Node_Id) return Uint;
pragma Inline (Uint10);
function Uint11 (N : Node_Id) return Uint;
pragma Inline (Uint11);
function Uint12 (N : Node_Id) return Uint;
pragma Inline (Uint12);
function Uint13 (N : Node_Id) return Uint;
pragma Inline (Uint13);
function Uint14 (N : Node_Id) return Uint;
pragma Inline (Uint14);
function Uint15 (N : Node_Id) return Uint;
pragma Inline (Uint15);
function Uint16 (N : Node_Id) return Uint;
pragma Inline (Uint16);
function Uint17 (N : Node_Id) return Uint;
pragma Inline (Uint17);
function Uint22 (N : Node_Id) return Uint;
pragma Inline (Uint22);
function Ureal3 (N : Node_Id) return Ureal;
pragma Inline (Ureal3);
function Ureal18 (N : Node_Id) return Ureal;
pragma Inline (Ureal18);
function Ureal21 (N : Node_Id) return Ureal;
pragma Inline (Ureal21);
function Flag4 (N : Node_Id) return Boolean;
pragma Inline (Flag4);
function Flag5 (N : Node_Id) return Boolean;
pragma Inline (Flag5);
function Flag6 (N : Node_Id) return Boolean;
pragma Inline (Flag6);
function Flag7 (N : Node_Id) return Boolean;
pragma Inline (Flag7);
function Flag8 (N : Node_Id) return Boolean;
pragma Inline (Flag8);
function Flag9 (N : Node_Id) return Boolean;
pragma Inline (Flag9);
function Flag10 (N : Node_Id) return Boolean;
pragma Inline (Flag10);
function Flag11 (N : Node_Id) return Boolean;
pragma Inline (Flag11);
function Flag12 (N : Node_Id) return Boolean;
pragma Inline (Flag12);
function Flag13 (N : Node_Id) return Boolean;
pragma Inline (Flag13);
function Flag14 (N : Node_Id) return Boolean;
pragma Inline (Flag14);
function Flag15 (N : Node_Id) return Boolean;
pragma Inline (Flag15);
function Flag16 (N : Node_Id) return Boolean;
pragma Inline (Flag16);
function Flag17 (N : Node_Id) return Boolean;
pragma Inline (Flag17);
function Flag18 (N : Node_Id) return Boolean;
pragma Inline (Flag18);
function Flag19 (N : Node_Id) return Boolean;
pragma Inline (Flag19);
function Flag20 (N : Node_Id) return Boolean;
pragma Inline (Flag20);
function Flag21 (N : Node_Id) return Boolean;
pragma Inline (Flag21);
function Flag22 (N : Node_Id) return Boolean;
pragma Inline (Flag22);
function Flag23 (N : Node_Id) return Boolean;
pragma Inline (Flag23);
function Flag24 (N : Node_Id) return Boolean;
pragma Inline (Flag24);
function Flag25 (N : Node_Id) return Boolean;
pragma Inline (Flag25);
function Flag26 (N : Node_Id) return Boolean;
pragma Inline (Flag26);
function Flag27 (N : Node_Id) return Boolean;
pragma Inline (Flag27);
function Flag28 (N : Node_Id) return Boolean;
pragma Inline (Flag28);
function Flag29 (N : Node_Id) return Boolean;
pragma Inline (Flag29);
function Flag30 (N : Node_Id) return Boolean;
pragma Inline (Flag30);
function Flag31 (N : Node_Id) return Boolean;
pragma Inline (Flag31);
function Flag32 (N : Node_Id) return Boolean;
pragma Inline (Flag32);
function Flag33 (N : Node_Id) return Boolean;
pragma Inline (Flag33);
function Flag34 (N : Node_Id) return Boolean;
pragma Inline (Flag34);
function Flag35 (N : Node_Id) return Boolean;
pragma Inline (Flag35);
function Flag36 (N : Node_Id) return Boolean;
pragma Inline (Flag36);
function Flag37 (N : Node_Id) return Boolean;
pragma Inline (Flag37);
function Flag38 (N : Node_Id) return Boolean;
pragma Inline (Flag38);
function Flag39 (N : Node_Id) return Boolean;
pragma Inline (Flag39);
function Flag40 (N : Node_Id) return Boolean;
pragma Inline (Flag40);
function Flag41 (N : Node_Id) return Boolean;
pragma Inline (Flag41);
function Flag42 (N : Node_Id) return Boolean;
pragma Inline (Flag42);
function Flag43 (N : Node_Id) return Boolean;
pragma Inline (Flag43);
function Flag44 (N : Node_Id) return Boolean;
pragma Inline (Flag44);
function Flag45 (N : Node_Id) return Boolean;
pragma Inline (Flag45);
function Flag46 (N : Node_Id) return Boolean;
pragma Inline (Flag46);
function Flag47 (N : Node_Id) return Boolean;
pragma Inline (Flag47);
function Flag48 (N : Node_Id) return Boolean;
pragma Inline (Flag48);
function Flag49 (N : Node_Id) return Boolean;
pragma Inline (Flag49);
function Flag50 (N : Node_Id) return Boolean;
pragma Inline (Flag50);
function Flag51 (N : Node_Id) return Boolean;
pragma Inline (Flag51);
function Flag52 (N : Node_Id) return Boolean;
pragma Inline (Flag52);
function Flag53 (N : Node_Id) return Boolean;
pragma Inline (Flag53);
function Flag54 (N : Node_Id) return Boolean;
pragma Inline (Flag54);
function Flag55 (N : Node_Id) return Boolean;
pragma Inline (Flag55);
function Flag56 (N : Node_Id) return Boolean;
pragma Inline (Flag56);
function Flag57 (N : Node_Id) return Boolean;
pragma Inline (Flag57);
function Flag58 (N : Node_Id) return Boolean;
pragma Inline (Flag58);
function Flag59 (N : Node_Id) return Boolean;
pragma Inline (Flag59);
function Flag60 (N : Node_Id) return Boolean;
pragma Inline (Flag60);
function Flag61 (N : Node_Id) return Boolean;
pragma Inline (Flag61);
function Flag62 (N : Node_Id) return Boolean;
pragma Inline (Flag62);
function Flag63 (N : Node_Id) return Boolean;
pragma Inline (Flag63);
function Flag64 (N : Node_Id) return Boolean;
pragma Inline (Flag64);
function Flag65 (N : Node_Id) return Boolean;
pragma Inline (Flag65);
function Flag66 (N : Node_Id) return Boolean;
pragma Inline (Flag66);
function Flag67 (N : Node_Id) return Boolean;
pragma Inline (Flag67);
function Flag68 (N : Node_Id) return Boolean;
pragma Inline (Flag68);
function Flag69 (N : Node_Id) return Boolean;
pragma Inline (Flag69);
function Flag70 (N : Node_Id) return Boolean;
pragma Inline (Flag70);
function Flag71 (N : Node_Id) return Boolean;
pragma Inline (Flag71);
function Flag72 (N : Node_Id) return Boolean;
pragma Inline (Flag72);
function Flag73 (N : Node_Id) return Boolean;
pragma Inline (Flag73);
function Flag74 (N : Node_Id) return Boolean;
pragma Inline (Flag74);
function Flag75 (N : Node_Id) return Boolean;
pragma Inline (Flag75);
function Flag76 (N : Node_Id) return Boolean;
pragma Inline (Flag76);
function Flag77 (N : Node_Id) return Boolean;
pragma Inline (Flag77);
function Flag78 (N : Node_Id) return Boolean;
pragma Inline (Flag78);
function Flag79 (N : Node_Id) return Boolean;
pragma Inline (Flag79);
function Flag80 (N : Node_Id) return Boolean;
pragma Inline (Flag80);
function Flag81 (N : Node_Id) return Boolean;
pragma Inline (Flag81);
function Flag82 (N : Node_Id) return Boolean;
pragma Inline (Flag82);
function Flag83 (N : Node_Id) return Boolean;
pragma Inline (Flag83);
function Flag84 (N : Node_Id) return Boolean;
pragma Inline (Flag84);
function Flag85 (N : Node_Id) return Boolean;
pragma Inline (Flag85);
function Flag86 (N : Node_Id) return Boolean;
pragma Inline (Flag86);
function Flag87 (N : Node_Id) return Boolean;
pragma Inline (Flag87);
function Flag88 (N : Node_Id) return Boolean;
pragma Inline (Flag88);
function Flag89 (N : Node_Id) return Boolean;
pragma Inline (Flag89);
function Flag90 (N : Node_Id) return Boolean;
pragma Inline (Flag90);
function Flag91 (N : Node_Id) return Boolean;
pragma Inline (Flag91);
function Flag92 (N : Node_Id) return Boolean;
pragma Inline (Flag92);
function Flag93 (N : Node_Id) return Boolean;
pragma Inline (Flag93);
function Flag94 (N : Node_Id) return Boolean;
pragma Inline (Flag94);
function Flag95 (N : Node_Id) return Boolean;
pragma Inline (Flag95);
function Flag96 (N : Node_Id) return Boolean;
pragma Inline (Flag96);
function Flag97 (N : Node_Id) return Boolean;
pragma Inline (Flag97);
function Flag98 (N : Node_Id) return Boolean;
pragma Inline (Flag98);
function Flag99 (N : Node_Id) return Boolean;
pragma Inline (Flag99);
function Flag100 (N : Node_Id) return Boolean;
pragma Inline (Flag100);
function Flag101 (N : Node_Id) return Boolean;
pragma Inline (Flag101);
function Flag102 (N : Node_Id) return Boolean;
pragma Inline (Flag102);
function Flag103 (N : Node_Id) return Boolean;
pragma Inline (Flag103);
function Flag104 (N : Node_Id) return Boolean;
pragma Inline (Flag104);
function Flag105 (N : Node_Id) return Boolean;
pragma Inline (Flag105);
function Flag106 (N : Node_Id) return Boolean;
pragma Inline (Flag106);
function Flag107 (N : Node_Id) return Boolean;
pragma Inline (Flag107);
function Flag108 (N : Node_Id) return Boolean;
pragma Inline (Flag108);
function Flag109 (N : Node_Id) return Boolean;
pragma Inline (Flag109);
function Flag110 (N : Node_Id) return Boolean;
pragma Inline (Flag110);
function Flag111 (N : Node_Id) return Boolean;
pragma Inline (Flag111);
function Flag112 (N : Node_Id) return Boolean;
pragma Inline (Flag112);
function Flag113 (N : Node_Id) return Boolean;
pragma Inline (Flag113);
function Flag114 (N : Node_Id) return Boolean;
pragma Inline (Flag114);
function Flag115 (N : Node_Id) return Boolean;
pragma Inline (Flag115);
function Flag116 (N : Node_Id) return Boolean;
pragma Inline (Flag116);
function Flag117 (N : Node_Id) return Boolean;
pragma Inline (Flag117);
function Flag118 (N : Node_Id) return Boolean;
pragma Inline (Flag118);
function Flag119 (N : Node_Id) return Boolean;
pragma Inline (Flag119);
function Flag120 (N : Node_Id) return Boolean;
pragma Inline (Flag120);
function Flag121 (N : Node_Id) return Boolean;
pragma Inline (Flag121);
function Flag122 (N : Node_Id) return Boolean;
pragma Inline (Flag122);
function Flag123 (N : Node_Id) return Boolean;
pragma Inline (Flag123);
function Flag124 (N : Node_Id) return Boolean;
pragma Inline (Flag124);
function Flag125 (N : Node_Id) return Boolean;
pragma Inline (Flag125);
function Flag126 (N : Node_Id) return Boolean;
pragma Inline (Flag126);
function Flag127 (N : Node_Id) return Boolean;
pragma Inline (Flag127);
function Flag128 (N : Node_Id) return Boolean;
pragma Inline (Flag128);
function Flag129 (N : Node_Id) return Boolean;
pragma Inline (Flag129);
function Flag130 (N : Node_Id) return Boolean;
pragma Inline (Flag130);
function Flag131 (N : Node_Id) return Boolean;
pragma Inline (Flag131);
function Flag132 (N : Node_Id) return Boolean;
pragma Inline (Flag132);
function Flag133 (N : Node_Id) return Boolean;
pragma Inline (Flag133);
function Flag134 (N : Node_Id) return Boolean;
pragma Inline (Flag134);
function Flag135 (N : Node_Id) return Boolean;
pragma Inline (Flag135);
function Flag136 (N : Node_Id) return Boolean;
pragma Inline (Flag136);
function Flag137 (N : Node_Id) return Boolean;
pragma Inline (Flag137);
function Flag138 (N : Node_Id) return Boolean;
pragma Inline (Flag138);
function Flag139 (N : Node_Id) return Boolean;
pragma Inline (Flag139);
function Flag140 (N : Node_Id) return Boolean;
pragma Inline (Flag140);
function Flag141 (N : Node_Id) return Boolean;
pragma Inline (Flag141);
function Flag142 (N : Node_Id) return Boolean;
pragma Inline (Flag142);
function Flag143 (N : Node_Id) return Boolean;
pragma Inline (Flag143);
function Flag144 (N : Node_Id) return Boolean;
pragma Inline (Flag144);
function Flag145 (N : Node_Id) return Boolean;
pragma Inline (Flag145);
function Flag146 (N : Node_Id) return Boolean;
pragma Inline (Flag146);
function Flag147 (N : Node_Id) return Boolean;
pragma Inline (Flag147);
function Flag148 (N : Node_Id) return Boolean;
pragma Inline (Flag148);
function Flag149 (N : Node_Id) return Boolean;
pragma Inline (Flag149);
function Flag150 (N : Node_Id) return Boolean;
pragma Inline (Flag150);
function Flag151 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag152 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag153 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag154 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag155 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag156 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag157 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag158 (N : Node_Id) return Boolean;
pragma Inline (Flag151);
function Flag159 (N : Node_Id) return Boolean;
pragma Inline (Flag159);
function Flag160 (N : Node_Id) return Boolean;
pragma Inline (Flag160);
function Flag161 (N : Node_Id) return Boolean;
pragma Inline (Flag161);
function Flag162 (N : Node_Id) return Boolean;
pragma Inline (Flag162);
function Flag163 (N : Node_Id) return Boolean;
pragma Inline (Flag163);
function Flag164 (N : Node_Id) return Boolean;
pragma Inline (Flag164);
function Flag165 (N : Node_Id) return Boolean;
pragma Inline (Flag165);
function Flag166 (N : Node_Id) return Boolean;
pragma Inline (Flag166);
function Flag167 (N : Node_Id) return Boolean;
pragma Inline (Flag167);
function Flag168 (N : Node_Id) return Boolean;
pragma Inline (Flag168);
function Flag169 (N : Node_Id) return Boolean;
pragma Inline (Flag169);
function Flag170 (N : Node_Id) return Boolean;
pragma Inline (Flag170);
function Flag171 (N : Node_Id) return Boolean;
pragma Inline (Flag171);
function Flag172 (N : Node_Id) return Boolean;
pragma Inline (Flag172);
function Flag173 (N : Node_Id) return Boolean;
pragma Inline (Flag173);
function Flag174 (N : Node_Id) return Boolean;
pragma Inline (Flag174);
function Flag175 (N : Node_Id) return Boolean;
pragma Inline (Flag175);
function Flag176 (N : Node_Id) return Boolean;
pragma Inline (Flag176);
function Flag177 (N : Node_Id) return Boolean;
pragma Inline (Flag177);
function Flag178 (N : Node_Id) return Boolean;
pragma Inline (Flag178);
function Flag179 (N : Node_Id) return Boolean;
pragma Inline (Flag179);
function Flag180 (N : Node_Id) return Boolean;
pragma Inline (Flag180);
function Flag181 (N : Node_Id) return Boolean;
pragma Inline (Flag181);
function Flag182 (N : Node_Id) return Boolean;
pragma Inline (Flag182);
function Flag183 (N : Node_Id) return Boolean;
pragma Inline (Flag183);
-- Procedures to set value of indicated field
procedure Set_Nkind (N : Node_Id; Val : Node_Kind);
pragma Inline (Set_Nkind);
procedure Set_Field1 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field1);
procedure Set_Field2 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field2);
procedure Set_Field3 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field3);
procedure Set_Field4 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field4);
procedure Set_Field5 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field5);
procedure Set_Field6 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field6);
procedure Set_Field7 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field7);
procedure Set_Field8 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field8);
procedure Set_Field9 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field9);
procedure Set_Field10 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field10);
procedure Set_Field11 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field11);
procedure Set_Field12 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field12);
procedure Set_Field13 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field13);
procedure Set_Field14 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field14);
procedure Set_Field15 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field15);
procedure Set_Field16 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field16);
procedure Set_Field17 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field17);
procedure Set_Field18 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field18);
procedure Set_Field19 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field19);
procedure Set_Field20 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field20);
procedure Set_Field21 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field21);
procedure Set_Field22 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field22);
procedure Set_Field23 (N : Node_Id; Val : Union_Id);
pragma Inline (Set_Field23);
procedure Set_Node1 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node1);
procedure Set_Node2 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node2);
procedure Set_Node3 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node3);
procedure Set_Node4 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node4);
procedure Set_Node5 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node5);
procedure Set_Node6 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node6);
procedure Set_Node7 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node7);
procedure Set_Node8 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node8);
procedure Set_Node9 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node9);
procedure Set_Node10 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node10);
procedure Set_Node11 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node11);
procedure Set_Node12 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node12);
procedure Set_Node13 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node13);
procedure Set_Node14 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node14);
procedure Set_Node15 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node15);
procedure Set_Node16 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node16);
procedure Set_Node17 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node17);
procedure Set_Node18 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node18);
procedure Set_Node19 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node19);
procedure Set_Node20 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node20);
procedure Set_Node21 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node21);
procedure Set_Node22 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node22);
procedure Set_Node23 (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node23);
procedure Set_List1 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List1);
procedure Set_List2 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List2);
procedure Set_List3 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List3);
procedure Set_List4 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List4);
procedure Set_List5 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List5);
procedure Set_List10 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List10);
procedure Set_List14 (N : Node_Id; Val : List_Id);
pragma Inline (Set_List14);
procedure Set_Elist2 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist2);
procedure Set_Elist3 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist3);
procedure Set_Elist4 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist4);
procedure Set_Elist8 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist8);
procedure Set_Elist13 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist13);
procedure Set_Elist15 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist15);
procedure Set_Elist16 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist16);
procedure Set_Elist18 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist18);
procedure Set_Elist21 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist21);
procedure Set_Elist23 (N : Node_Id; Val : Elist_Id);
pragma Inline (Set_Elist23);
procedure Set_Name1 (N : Node_Id; Val : Name_Id);
pragma Inline (Set_Name1);
procedure Set_Name2 (N : Node_Id; Val : Name_Id);
pragma Inline (Set_Name2);
procedure Set_Char_Code2 (N : Node_Id; Val : Char_Code);
pragma Inline (Set_Char_Code2);
procedure Set_Str3 (N : Node_Id; Val : String_Id);
pragma Inline (Set_Str3);
procedure Set_Uint3 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint3);
procedure Set_Uint4 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint4);
procedure Set_Uint5 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint5);
procedure Set_Uint8 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint8);
procedure Set_Uint9 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint9);
procedure Set_Uint10 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint10);
procedure Set_Uint11 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint11);
procedure Set_Uint12 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint12);
procedure Set_Uint13 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint13);
procedure Set_Uint14 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint14);
procedure Set_Uint15 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint15);
procedure Set_Uint16 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint16);
procedure Set_Uint17 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint17);
procedure Set_Uint22 (N : Node_Id; Val : Uint);
pragma Inline (Set_Uint22);
procedure Set_Ureal3 (N : Node_Id; Val : Ureal);
pragma Inline (Set_Ureal3);
procedure Set_Ureal18 (N : Node_Id; Val : Ureal);
pragma Inline (Set_Ureal18);
procedure Set_Ureal21 (N : Node_Id; Val : Ureal);
pragma Inline (Set_Ureal21);
procedure Set_Flag4 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag4);
procedure Set_Flag5 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag5);
procedure Set_Flag6 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag6);
procedure Set_Flag7 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag7);
procedure Set_Flag8 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag8);
procedure Set_Flag9 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag9);
procedure Set_Flag10 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag10);
procedure Set_Flag11 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag11);
procedure Set_Flag12 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag12);
procedure Set_Flag13 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag13);
procedure Set_Flag14 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag14);
procedure Set_Flag15 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag15);
procedure Set_Flag16 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag16);
procedure Set_Flag17 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag17);
procedure Set_Flag18 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag18);
procedure Set_Flag19 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag19);
procedure Set_Flag20 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag20);
procedure Set_Flag21 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag21);
procedure Set_Flag22 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag22);
procedure Set_Flag23 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag23);
procedure Set_Flag24 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag24);
procedure Set_Flag25 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag25);
procedure Set_Flag26 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag26);
procedure Set_Flag27 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag27);
procedure Set_Flag28 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag28);
procedure Set_Flag29 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag29);
procedure Set_Flag30 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag30);
procedure Set_Flag31 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag31);
procedure Set_Flag32 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag32);
procedure Set_Flag33 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag33);
procedure Set_Flag34 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag34);
procedure Set_Flag35 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag35);
procedure Set_Flag36 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag36);
procedure Set_Flag37 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag37);
procedure Set_Flag38 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag38);
procedure Set_Flag39 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag39);
procedure Set_Flag40 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag40);
procedure Set_Flag41 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag41);
procedure Set_Flag42 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag42);
procedure Set_Flag43 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag43);
procedure Set_Flag44 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag44);
procedure Set_Flag45 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag45);
procedure Set_Flag46 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag46);
procedure Set_Flag47 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag47);
procedure Set_Flag48 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag48);
procedure Set_Flag49 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag49);
procedure Set_Flag50 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag50);
procedure Set_Flag51 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag51);
procedure Set_Flag52 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag52);
procedure Set_Flag53 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag53);
procedure Set_Flag54 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag54);
procedure Set_Flag55 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag55);
procedure Set_Flag56 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag56);
procedure Set_Flag57 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag57);
procedure Set_Flag58 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag58);
procedure Set_Flag59 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag59);
procedure Set_Flag60 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag60);
procedure Set_Flag61 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag61);
procedure Set_Flag62 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag62);
procedure Set_Flag63 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag63);
procedure Set_Flag64 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag64);
procedure Set_Flag65 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag65);
procedure Set_Flag66 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag66);
procedure Set_Flag67 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag67);
procedure Set_Flag68 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag68);
procedure Set_Flag69 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag69);
procedure Set_Flag70 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag70);
procedure Set_Flag71 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag71);
procedure Set_Flag72 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag72);
procedure Set_Flag73 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag73);
procedure Set_Flag74 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag74);
procedure Set_Flag75 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag75);
procedure Set_Flag76 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag76);
procedure Set_Flag77 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag77);
procedure Set_Flag78 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag78);
procedure Set_Flag79 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag79);
procedure Set_Flag80 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag80);
procedure Set_Flag81 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag81);
procedure Set_Flag82 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag82);
procedure Set_Flag83 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag83);
procedure Set_Flag84 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag84);
procedure Set_Flag85 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag85);
procedure Set_Flag86 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag86);
procedure Set_Flag87 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag87);
procedure Set_Flag88 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag88);
procedure Set_Flag89 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag89);
procedure Set_Flag90 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag90);
procedure Set_Flag91 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag91);
procedure Set_Flag92 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag92);
procedure Set_Flag93 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag93);
procedure Set_Flag94 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag94);
procedure Set_Flag95 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag95);
procedure Set_Flag96 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag96);
procedure Set_Flag97 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag97);
procedure Set_Flag98 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag98);
procedure Set_Flag99 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag99);
procedure Set_Flag100 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag100);
procedure Set_Flag101 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag101);
procedure Set_Flag102 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag102);
procedure Set_Flag103 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag103);
procedure Set_Flag104 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag104);
procedure Set_Flag105 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag105);
procedure Set_Flag106 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag106);
procedure Set_Flag107 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag107);
procedure Set_Flag108 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag108);
procedure Set_Flag109 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag109);
procedure Set_Flag110 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag110);
procedure Set_Flag111 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag111);
procedure Set_Flag112 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag112);
procedure Set_Flag113 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag113);
procedure Set_Flag114 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag114);
procedure Set_Flag115 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag115);
procedure Set_Flag116 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag116);
procedure Set_Flag117 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag117);
procedure Set_Flag118 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag118);
procedure Set_Flag119 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag119);
procedure Set_Flag120 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag120);
procedure Set_Flag121 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag121);
procedure Set_Flag122 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag122);
procedure Set_Flag123 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag123);
procedure Set_Flag124 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag124);
procedure Set_Flag125 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag125);
procedure Set_Flag126 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag126);
procedure Set_Flag127 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag127);
procedure Set_Flag128 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag128);
procedure Set_Flag129 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag129);
procedure Set_Flag130 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag130);
procedure Set_Flag131 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag131);
procedure Set_Flag132 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag132);
procedure Set_Flag133 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag133);
procedure Set_Flag134 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag134);
procedure Set_Flag135 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag135);
procedure Set_Flag136 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag136);
procedure Set_Flag137 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag137);
procedure Set_Flag138 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag138);
procedure Set_Flag139 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag139);
procedure Set_Flag140 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag140);
procedure Set_Flag141 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag141);
procedure Set_Flag142 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag142);
procedure Set_Flag143 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag143);
procedure Set_Flag144 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag144);
procedure Set_Flag145 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag145);
procedure Set_Flag146 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag146);
procedure Set_Flag147 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag147);
procedure Set_Flag148 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag148);
procedure Set_Flag149 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag149);
procedure Set_Flag150 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag150);
procedure Set_Flag151 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag151);
procedure Set_Flag152 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag152);
procedure Set_Flag153 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag153);
procedure Set_Flag154 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag154);
procedure Set_Flag155 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag155);
procedure Set_Flag156 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag156);
procedure Set_Flag157 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag157);
procedure Set_Flag158 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag158);
procedure Set_Flag159 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag159);
procedure Set_Flag160 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag160);
procedure Set_Flag161 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag161);
procedure Set_Flag162 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag162);
procedure Set_Flag163 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag163);
procedure Set_Flag164 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag164);
procedure Set_Flag165 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag165);
procedure Set_Flag166 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag166);
procedure Set_Flag167 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag167);
procedure Set_Flag168 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag168);
procedure Set_Flag169 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag169);
procedure Set_Flag170 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag170);
procedure Set_Flag171 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag171);
procedure Set_Flag172 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag172);
procedure Set_Flag173 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag173);
procedure Set_Flag174 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag174);
procedure Set_Flag175 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag175);
procedure Set_Flag176 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag176);
procedure Set_Flag177 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag177);
procedure Set_Flag178 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag178);
procedure Set_Flag179 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag179);
procedure Set_Flag180 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag180);
procedure Set_Flag181 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag181);
procedure Set_Flag182 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag182);
procedure Set_Flag183 (N : Node_Id; Val : Boolean);
pragma Inline (Set_Flag183);
-- The following versions of Set_Noden also set the parent
-- pointer of the referenced node if it is non_Empty
procedure Set_Node1_With_Parent (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node1_With_Parent);
procedure Set_Node2_With_Parent (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node2_With_Parent);
procedure Set_Node3_With_Parent (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node3_With_Parent);
procedure Set_Node4_With_Parent (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node4_With_Parent);
procedure Set_Node5_With_Parent (N : Node_Id; Val : Node_Id);
pragma Inline (Set_Node5_With_Parent);
-- The following versions of Set_Listn also set the parent pointer of
-- the referenced node if it is non_Empty. The procedures for List6
-- to List12 can only be applied to nodes which have an extension.
procedure Set_List1_With_Parent (N : Node_Id; Val : List_Id);
pragma Inline (Set_List1_With_Parent);
procedure Set_List2_With_Parent (N : Node_Id; Val : List_Id);
pragma Inline (Set_List2_With_Parent);
procedure Set_List3_With_Parent (N : Node_Id; Val : List_Id);
pragma Inline (Set_List3_With_Parent);
procedure Set_List4_With_Parent (N : Node_Id; Val : List_Id);
pragma Inline (Set_List4_With_Parent);
procedure Set_List5_With_Parent (N : Node_Id; Val : List_Id);
pragma Inline (Set_List5_With_Parent);
end Unchecked_Access;
-----------------------------
-- Private Part Subpackage --
-----------------------------
-- The following package contains the definition of the data structure
-- used by the implementation of the Atree package. Logically it really
-- corresponds to the private part, hence the name. The reason that it
-- is defined as a sub-package is to allow special access from clients
-- that need to see the internals of the data structures.
package Atree_Private_Part is
-------------------------
-- Tree Representation --
-------------------------
-- The nodes of the tree are stored in a table (i.e. an array). In the
-- case of extended nodes four consecutive components in the array are
-- used. There are thus two formats for array components. One is used
-- for non-extended nodes, and for the first component of extended
-- nodes. The other is used for the extension parts (second, third and
-- fourth components) of an extended node. A variant record structure
-- is used to distinguish the two formats.
type Node_Record (Is_Extension : Boolean := False) is record
-- Logically, the only field in the common part is the above
-- Is_Extension discriminant (a single bit). However, Gigi cannot
-- yet handle such a structure, so we fill out the common part of
-- the record with fields that are used in different ways for
-- normal nodes and node extensions.
Pflag1, Pflag2 : Boolean;
-- The Paren_Count field is represented using two boolean flags,
-- where Pflag1 is worth 1, and Pflag2 is worth 2. This is done
-- because we need to be easily able to reuse this field for
-- extra flags in the extended node case.
In_List : Boolean;
-- Flag used to indicate if node is a member of a list.
-- This field is considered private to the Atree package.
Unused_1 : Boolean;
-- Currently unused flag
Rewrite_Ins : Boolean;
-- Flag set by Mark_Rewrite_Insertion procedure.
-- This field is considered private to the Atree package.
Analyzed : Boolean;
-- Flag to indicate the node has been analyzed (and expanded)
Comes_From_Source : Boolean;
-- Flag to indicate that node comes from the source program (i.e.
-- was built by the parser or scanner, not the analyzer or expander).
Error_Posted : Boolean;
-- Flag to indicate that an error message has been posted on the
-- node (to avoid duplicate flags on the same node)
Flag4 : Boolean;
Flag5 : Boolean;
Flag6 : Boolean;
Flag7 : Boolean;
Flag8 : Boolean;
Flag9 : Boolean;
Flag10 : Boolean;
Flag11 : Boolean;
Flag12 : Boolean;
Flag13 : Boolean;
Flag14 : Boolean;
Flag15 : Boolean;
Flag16 : Boolean;
Flag17 : Boolean;
Flag18 : Boolean;
-- The eighteen flags for a normal node
-- The above fields are used as follows in components 2-4 of
-- an extended node entry.
-- In_List used as Flag19, Flag40, Flag129
-- Unused_1 used as Flag20, Flag41, Flag130
-- Rewrite_Ins used as Flag21, Flag42, Flag131
-- Analyzed used as Flag22, Flag43, Flag132
-- Comes_From_Source used as Flag23, Flag44, Flag133
-- Error_Posted used as Flag24, Flag45, Flag134
-- Flag4 used as Flag25, Flag46, Flag135
-- Flag5 used as Flag26, Flag47, Flag136
-- Flag6 used as Flag27, Flag48, Flag137
-- Flag7 used as Flag28, Flag49, Flag138
-- Flag8 used as Flag29, Flag50, Flag139
-- Flag9 used as Flag30, Flag51, Flag140
-- Flag10 used as Flag31, Flag52, Flag141
-- Flag11 used as Flag32, Flag53, Flag142
-- Flag12 used as Flag33, Flag54, Flag143
-- Flag13 used as Flag34, Flag55, Flag144
-- Flag14 used as Flag35, Flag56, Flag145
-- Flag15 used as Flag36, Flag57, Flag146
-- Flag16 used as Flag37, Flag58, Flag147
-- Flag17 used as Flag38, Flag59, Flag148
-- Flag18 used as Flag39, Flag60, Flag149
-- Pflag1 used as Flag61, Flag62, Flag150
-- Pflag2 used as Flag63, Flag64, Flag151
Nkind : Node_Kind;
-- For a non-extended node, or the initial section of an extended
-- node, this field holds the Node_Kind value. For an extended node,
-- The Nkind field is used as follows:
--
-- Second entry: holds the Ekind field of the entity
-- Third entry: holds 8 additional flags (Flag65-Flag72)
-- Fourth entry: not currently used
-- Now finally (on an 32-bit boundary!) comes the variant part
case Is_Extension is
-- Non-extended node, or first component of extended node
when False =>
Sloc : Source_Ptr;
-- Source location for this node
Link : Union_Id;
-- This field is used either as the Parent pointer (if In_List
-- is False), or to point to the list header (if In_List is
-- True). This field is considered private and can be modified
-- only by Atree or by Nlists.
Field1 : Union_Id;
Field2 : Union_Id;
Field3 : Union_Id;
Field4 : Union_Id;
Field5 : Union_Id;
-- Five general use fields, which can contain Node_Id, List_Id,
-- Elist_Id, String_Id, Name_Id, or Char_Code values depending
-- on the values in Nkind and (for extended nodes), in Ekind.
-- See packages Sinfo and Einfo for details of their use.
-- Extension (second component) of extended node
when True =>
Field6 : Union_Id;
Field7 : Union_Id;
Field8 : Union_Id;
Field9 : Union_Id;
Field10 : Union_Id;
Field11 : Union_Id;
Field12 : Union_Id;
-- Seven additional general fields available only for entities
-- See package Einfo for details of their use (which depends
-- on the value in the Ekind field).
-- In the third component, the extension format as described
-- above is used to hold additional general fields and flags
-- as follows:
-- Field6-11 Holds Field13-Field18
-- Field12 Holds Flag73-Flag96 and Convention
-- In the fourth component, the extension format as described
-- above is used to hold additional general fields and flags
-- as follows:
-- Field6-10 Holds Field19-Field23
-- Field11 Holds Flag152-Flag167 (16 bits unused)
-- Field12 Holds Flag97-Flag128
end case;
end record;
pragma Pack (Node_Record);
for Node_Record'Size use 8*32;
for Node_Record'Alignment use 4;
-- The following defines the extendible array used for the nodes table
-- Nodes with extensions use two consecutive entries in the array
package Nodes is new Table.Table (
Table_Component_Type => Node_Record,
Table_Index_Type => Node_Id,
Table_Low_Bound => First_Node_Id,
Table_Initial => Alloc.Nodes_Initial,
Table_Increment => Alloc.Nodes_Increment,
Table_Name => "Nodes");
end Atree_Private_Part;
end Atree;