+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- S I N F O --
--- --
--- S p e c --
--- --
--- $Revision: 1.6.10.1 $
--- --
--- Copyright (C) 1992-2001, 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. --
--- --
-------------------------------------------------------------------------------
-
--- 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.
-
--- Note: the grammar used here is taken from Version 5.95 of the RM, dated
--- November 1994. 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: There is a C version of this package. Any changes to this
--- source file must be properly reflected in this C header file sinfo.h
--- which is created automatically from sinfo.ads using xsinfo.spt.
-
-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 seven places:
-
- -- The documentation associated with the node
- -- The spec of the access function in sinfo.ads
- -- The body of the access function in sinfo.adb
- -- The pragma Inline at the end of sinfo.ads for the access function
- -- The spec of the set procedure in sinfo.ads
- -- The body of the set procedure in sinfo.adb
- -- The pragma Inline at the end of sinfo.ads for 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 the body, the calls to the Dcheck_Node debug
- -- procedure will need cross-references adding in alphabetical order.
-
- -- In addition, if any of the standard expression fields is changed, then
- -- the utiliy 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 Dcheck calls for all
- -- its fields (except standard expression fields) to include
- -- the new node in the debug cross-reference list
- -- Add an appropriate section to the case statement in sprint.adb
- -- Add an appropriate section to the case statement in sem.adb
- -- Add an appropraite section to the case statement in exp_util.adb
- -- (Insert_Actions procedure)
- -- For a subexpression, add an appropriate sections to the case
- -- statement in sem_eval.adb
- -- For a subexpression, add an appropriate sections to the case
- -- statement in sem_res.adb
-
- -- Finally, four utility programs must be run:
-
- -- Run CSinfo to check that you have made the changes consistently.
- -- It checks most of the rules given above, with clear error messages.
- -- This utility reads sinfo.ads and sinfo.adb and generates a report
- -- to standard output.
-
- -- Run XSinfo to create a-sinfo.h, the corresponding C header. This
- -- utility reads sinfo.ads and generates a-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.
-
- -- 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 a
- -- 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 a
- -- 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
- -- ...
- -- Alt := Next (Alt);
- -- end loop;
-
- -- or
-
- -- Variant := First_Non_Pragma (Variants (N));
- -- while Present (Variant) loop
- -- ...
- -- Alt := Next_Non_Pragma (Alt);
- -- 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 a
- -- 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
- -- treeprs.ads) 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
- -- 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.
-
- ------------------------
- -- 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.
-
- -- 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.
-
- -- Comes_From_Source
- -- This flag is on for any nodes built by the scanner or parser from
- -- the source program, and off for any nodes built by the analyzer or
- -- expander. It indicates that a node comes from the original source.
- -- This flag is defined in Atree.
-
- -- Has_Dynamic_Length_Check and Has_Dynamic_Range_Check also appear on
- -- all nodes. They are fully described in the next section.
-
- ------------------------------------
- -- 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 treatement 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.
-
- -- 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. This flag also appears in the
- -- compilation unit node at the library level for such a subprogram
- -- (see further description in spec of Lib package).
-
- -- Aggregate_Bounds (Node3-Sem)
- -- Present in array N_Aggregate nodes. If the aggregate contains
- -- component associations this field points to an N_Range node whose
- -- bounds give the lowest and highest discrete choice values. If the
- -- named aggregate contains a dynamic or null choice this field is
- -- empty. If the aggregate contains positional elements this field
- -- points to an N_Integer_Literal node giving the number of positional
- -- elements. Note that if the aggregate contains positional elements
- -- and an other choice the N_Integer_Literal only accounts for the
- -- number of positional elements.
-
- -- All_Others (Flag11-Sem)
- -- Present in an N_Others_Choice node. This flag is set in the case
- -- of an others exception where all exceptions, even those that are
- -- not normally handled (in particular the tasking abort signal) by
- -- others. This is used for translation of the at end handler into
- -- a normal exception handler.
-
- -- 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 initialzation 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 during generic
- -- processing to relate nodes in the original template to nodes in the
- -- generic copy. It overlaps the Entity field, and is used to capture
- -- global references in the analyzed copy and place them in the template.
- -- See description in Sem_Ch12 for further details on this usage.
-
- -- 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. Note that 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 is required.
-
- -- 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 a
- -- 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)
- -- A flag present in the N_Return_Statement_Node. It 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.
-
- -- 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 to Gigi without any expansion.
- -- See Sem_Aggr for the specific conditions under which an aggregate
- -- has this flag set. See also the flag Static_Processing_OK.
-
- -- 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.
-
- -- 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 controlling tag for the call. For
- -- Procedure calls, the Controlling_Argument is one of the actuals.
- -- For a 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.
-
- -- 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 the Enum_Rep,
- -- Fixed_Value and Integer_Value attributes, 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 a direct conversion of the underlying integer
- -- result, with no regard to the small operand.
-
- -- Corresponding_Body (Node5-Sem)
- -- This field is set in subprogram declarations, where it is needed
- -- if a pragma Inline is present and the subprogram is called, in
- -- generic declarations if the generic is instantiated, and also in
- -- package declarations that contain inlined subprograms that are
- -- called, or generic declarations that are instantiated. It points
- -- to the defining entity for the corresponding body.
-
- -- 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.
-
- -- 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.
-
- -- Debug_Statement (Node3)
- -- This field is present in an N_Pragma node. It is used only for
- -- a Debug pragma or pragma Assert with a second parameter. The
- -- parameter is of the form of an expression, as required by the
- -- pragma syntax, but is actually a procedure call. To simplify
- -- semantic processing, the parser creates a copy of the argument
- -- rearranged into a procedure call statement and places it in the
- -- Debug_Statement field. Note that this field is considered a
- -- syntactic field, since it is created by the parser.
-
- -- 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.
-
- -- Delay_Finalize_Attach (Flag14-Sem)
- -- This flag is present in an N_Object_Declaration node. If it is set,
- -- then in the case of a controlled type being declared and initialized,
- -- the normal code for attaching the result to the appropriate local
- -- finalization list is suppressed. This is used for functions that
- -- return controlled types without using the secondary stack, where
- -- it is the caller who must do the attachment.
-
- -- 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_Access_Check (Flag11-Sem)
- -- This flag is set on nodes with a Prefix field that can be an object
- -- of an access type. If the flag is set, it indicates that a check is
- -- required to ensure that the value of the referenced object is not
- -- null. The actual check (which may be explicit or implicit by means
- -- of some trap), is generated by Gigi (all the front end does is to
- -- set this flag to request the trap).
-
- -- 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 (Flag13-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 dealt with by
- -- Gigi (all the front end does is to set the flag).
-
- -- 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.
-
- -- 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 limited to
- -- 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 ovrflow 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.
-
- -- 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 or N_Return_Statememt
- -- 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 a
- -- pragma Elaborate pragma appears for the with'ed units.
-
- -- Elaborate_All_Present (Flag15-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.
-
- -- 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 conditional 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 conditional 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 (identifier, character literal,
- -- operator symbol), as well as expanded names, and attributes that
- -- denote entities, such as 'Class. Points to the entity for the
- -- corresponding defining occurrence. Set after name resolution.
- -- In the case of identifiers in a WITH list, the corresponding
- -- defining occurrence is in a separately compiled file, and this
- -- pointer must be set using the library Load procedure. Note that
- -- 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 that Associated_Node overlays this field during the processing
- -- of generics. See Sem_Ch12 for further details.
-
- -- 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 (Flag11-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).
-
- -- 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. Note that 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 is required.
-
- -- 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.
-
- -- 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_Dynamic_Length_Check (Flag10-Sem)
- -- This flag is present on all 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 on all 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.
-
- -- 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_Priority_Pragma (Flag6-Sem)
- -- A flag present in N_Subprogram_Body, N_Task_Definition and
- -- N_Protected_Definition nodes to flag the presence of either
- -- a Priority or Interrupt_Priority pragma in the declaration
- -- sequence (public or private in the task and protected cases)
-
- -- 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_Storage_Size_Pragma (Flag5-Sem)
- -- A flag present in an N_Task_Definition node to flag the presence
- -- of a Storage_Size pragma
-
- -- Has_Task_Info_Pragma (Flag7-Sem)
- -- A flag present in an N_Task_Definition node to flag the presence
- -- of a Task_Info pragma. Used to detect duplicate pragmas.
-
- -- Has_Task_Name_Pragma (Flag8-Sem)
- -- A flag present in N_Task_Definition nodes to flag the presence
- -- of a Task_Name pragma in the declaration sequence for the task.
-
- -- Has_Wide_Character (Flag11-Sem)
- -- Present in string literals, set if any wide character (i.e. a
- -- character code outside the Character range) appears in the string.
-
- -- 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 (Flag17-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
-
- -- 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 legtitimately 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.
-
- -- 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_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 a
- -- cleanup handler to assure that the call is cancelled.
-
- -- 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_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_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_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 forma 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_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_Protected_Subprogram_Body (Flag7-Sem)
- -- A flag set in a Subprogram_Body block to indicate that it is the
- -- implemenation of a protected subprogram. Such a body needs a
- -- cleanup handler to make sure that the associated protected object
- -- is unlocked when the subprogram completes.
-
- -- 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_Unactivted_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 is not currently used in the compiler
- -- itself, but it is useful in the implementation of ASIS queries.
-
- -- Library_Unit (Node4-Sem)
- -- In a stub node, the Library_Unit field points to the compilation unit
- -- node of the corresponding subunit.
- --
- -- In a with clause node, the Library_Unit field points to the spec
- -- of the with'ed unit.
- --
- -- In a compilation unit node, the use of this field depends on
- -- the unit type:
- --
- -- For a subprogram body, the Library_Unit field points to the
- -- compilation unit node of the corresponding spec, unless
- -- Acts_As_Spec is set, in which case it points to itself.
- --
- -- For a package body, the Library_Unit field points to the
- -- compilation unit node of the corresponding spec.
- --
- -- For a subprogram spec to which pragma Inline applies, the
- -- Library_Unit field points to the compilation unit node of
- -- the corresponding body, if inlining is active.
- --
- -- For a generic declaration, the Library_Unit field points
- -- to the compilation unit node of the corresponding generic body.
- --
- -- For a subunit, the Library_Unit field points to the compilation
- -- unit node of the parent body.
- --
- -- Note that this field is not used to hold the parent pointer for a
- -- 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.
-
- -- 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.
-
- -- 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_Named_Actual (Node4-Sem)
- -- Present in parameter association node. 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_Rep_Item (Node4-Sem)
- -- Present in pragma nodes and attribute definition nodes. Used to
- -- link representation items that apply to an entity. See description
- -- of First_Rep_Item field in Einfo for full 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
- -- nor adjust should take place on this assignment eventhough the rhs
- -- is controlled. This is used in init_procs and aggregate expansions
- -- where the generated assignments are more initialisations than real
- -- assignments.
-
- -- 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 & N_Allocator to indicate
- -- that the object must not be initialized (by Initialize or a
- -- call to _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)
-
- -- OK_For_Stream (Flag4-Sem)
- -- Present in N_Attribute_Definition clauses for stream attributes. If
- -- set, indicates that the attribute is permitted even though the type
- -- involved is a limited type. In the case of a protected type, the
- -- result is to stream all components (including discriminants) in
- -- lexical order. For other limited types, the effect is simply to
- -- use the corresponding stream routine for the full type. This flag
- -- is used for internally generated code, where the streaming of these
- -- types is required, even though not normally allowed by the language.
-
- -- 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.
-
- -- 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).
-
- -- 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 (Node4-Sem)
- -- Present in N_Allocator. N_Free_Statement, and N_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_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 a
- -- 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)
- -- A flag 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).
-
- -- Return_Type (Node2-Sem)
- -- Present in N_Return_Statement node. For a procedure, this is set
- -- to Standard_Void_Type. For a function it references the entity
- -- for the returned type.
-
- -- 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, conersion and multiplication operations.
-
- -- 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.
-
- -- Static_Processing_OK (Flag4-Sem)
- -- Present in N_Aggregate nodes. When the Compile_Time_Known_Aggregate
- -- flag is set, the full value of the aggregate can be determined at
- -- compile time and the aggregate can be passed as is to the back-end.
- -- In this event it is irrelevant whether this flag is set or not.
- -- However, if the Compile_Time_Known_Aggregate flag is not set but
- -- Static_Processing_OK is set, the aggregate can (but need not) be
- -- converted into a compile time known aggregate by the expander.
- -- See Sem_Aggr for the specific conditions under which an aggregate
- -- has its Static_Processing_OK flag set.
-
- -- Storage_Pool (Node1-Sem)
- -- Present in N_Allocator, N_Free_Statement and N_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 a function. Empty indicates that the global default
- -- default pool is to be used. Note that in the case of a return
- -- statement, this field is set only if the function returns a
- -- value of a type whose size is not known at compile time on the
- -- secondary stack. It is never set on targets for which the target
- -- parameter Targparm.Functions_Return_By_DSP_On_Target is True.
-
- -- 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.
-
- -- Task_Body_Procedure (Node2-Sem)
- -- Present in task type declaration nodes. Points to the entity for
- -- the task body procedure (as further described in Exp_Ch9, task
- -- bodies are expanded into procedures). A convenient function to
- -- retrieve this field is Sem_Util.Get_Task_Body_Procedure.
-
- -- Then_Actions (List3-Sem)
- -- This field is present in conditional 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 conditional expressions, we have to be sure that the
- -- actions 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 multplication 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)
-
- -- Was_Originally_Stub (Flag13-Sem)
- -- This flag is set in the node for a proper body that replaces a
- -- 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_Tree here because of the case of
- -- nested instantiations where the substituted node can be copied.
-
- -- Zero_Cost_Handling (Flag5-Sem)
- -- This flag is set in all handled sequence of statement and exception
- -- handler nodes if eceptions are to be handled using the zero-cost
- -- mechanism (see Ada.Exceptions and System.Exceptions in files
- -- a-except.ads/adb and s-except.ads for full details). What gigi
- -- needs to do for such a handler is simply to put the code in the
- -- handler somewhere. The front end has generated all necessary labels.
-
- --------------------------------------------------
- -- 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;
-
- -- 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.
-
- -- 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)
- -- 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].
-
- -- N_Integer_Literal
- -- Sloc points to literal
- -- Intval (Uint3) contains integer value of literal
- -- plus fields for expression
- -- Print_In_Hex (Flag13-Sem)
-
- -- N_Real_Literal
- -- Sloc points to literal
- -- 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 (Char_Code2) 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 (and 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.
-
- -- N_String_Literal
- -- Sloc points to literal
- -- Strval (Str3) contains Id of string value
- -- Has_Wide_Character (Flag11-Sem)
- -- 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
- -- Chars (Name1) identifier name from pragma identifier
- -- Pragma_Argument_Associations (List2) (set to No_List if none)
- -- Debug_Statement (Node3) (set to Empty if not Debug, Assert)
- -- Next_Rep_Item (Node4-Sem)
-
- --------------------------------------
- -- 2.8 Pragma Argument Association --
- --------------------------------------
-
- -- PRAGMA_ARGUMENT_ASSOCIATION ::=
- -- [pragma_argument_IDENTIFIER =>] NAME
- -- | [pragma_argument_IDENTIFIER =>] EXPRESSION
-
- -- 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;
- -- | 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
-
- --------------------------------
- -- 3.2.2 Subtype Declaration --
- --------------------------------
-
- -- SUBTYPE_DECLARATION ::=
- -- subtype DEFINING_IDENTIFIER is SUBTYPE_INDICATION;
-
- -- 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)
- -- Subtype_Indication (Node5)
- -- Generic_Parent_Type (Node4-Sem) (set for an actual derived type).
- -- Exception_Junk (Flag11-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: 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]
- -- SUBTYPE_INDICATION [:= EXPRESSION];
- -- | DEFINING_IDENTIFIER_LIST : [aliased] [constant]
- -- ARRAY_TYPE_DEFINITION [:= EXPRESSION];
- -- | 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".
-
- -- 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.
-
- -- N_Object_Declaration
- -- Sloc points to first identifier
- -- Defining_Identifier (Node1)
- -- Aliased_Present (Flag4) set if ALIASED appears
- -- Constant_Present (Flag17) set if CONSTANT appears
- -- Object_Definition (Node4) subtype indication/array type definition
- -- 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 (Flag11-Sem)
- -- Delay_Finalize_Attach (Flag14-Sem)
- -- Is_Subprogram_Descriptor (Flag16-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] new parent_SUBTYPE_INDICATION [RECORD_EXTENSION_PART]
-
- -- Note: ABSTRACT, record extension part 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)
- -- Subtype_Indication (Node5)
- -- Record_Extension_Part (Node3) (set to Empty if not present)
-
- ---------------------------
- -- 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)
-
- ----------------------------------------------
- -- 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 Unsigned Range Specification --
- -----------------------------------------
-
- -- 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
-
- -- Note: the Delta_Expression and Real_Range_Specification fields
- -- are set to Empty for fixed point types declared in Standard.
-
- -- 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)
- -- Aliased_Present (Flag4) from component definition
- -- Subtype_Indication (Node5) from component definition
-
- -----------------------------------
- -- 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)
- -- Aliased_Present (Flag4) from component definition
- -- Subtype_Indication (Node5) from component definition
-
- --------------------------------------
- -- 3.6 Discrete Subtype Definition --
- --------------------------------------
-
- -- DISCRETE_SUBTYPE_DEFINITION ::=
- -- discrete_SUBTYPE_INDICATION | RANGE
-
- -------------------------------
- -- 3.6 Component Definition --
- -------------------------------
-
- -- COMPONENT_DEFINITION ::= [aliased] SUBTYPE_INDICATION
-
- -- There is no explicit node in the tree for a component definition.
- -- Instead the subtype indication appears directly, and the ALIASED
- -- indication (Aliased_Present flag) is in the parent node.
-
- -- 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.
-
- -----------------------------
- -- 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 : 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)
- -- 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
-
- -------------------------
- -- 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]
-
- -- 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)
- -- Aliased_Present (Flag4) from component definition
- -- Subtype_Indication (Node5) from component 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)
-
- -------------------------
- -- 3.8.1 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)
-
- ---------------------------------
- -- 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
-
- ----------------------------------
- -- 3.10 Access Type Definition --
- ----------------------------------
-
- -- ACCESS_TYPE_DEFINITION ::=
- -- ACCESS_TO_OBJECT_DEFINITION
- -- | ACCESS_TO_SUBPROGRAM_DEFINITION
-
- ---------------------------------------
- -- 3.10 Access To Object Definition --
- ---------------------------------------
-
- -- ACCESS_TO_OBJECT_DEFINITION ::=
- -- access [GENERAL_ACCESS_MODIFIER] SUBTYPE_INDICATION
-
- -- N_Access_To_Object_Definition
- -- Sloc points to ACCESS
- -- All_Present (Flag15)
- -- 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
- -- access [protected] procedure PARAMETER_PROFILE
- -- | 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
- -- Protected_Present (Flag15)
- -- Parameter_Specifications (List3) (set to No_List if no formal part)
- -- Subtype_Mark (Node4) result subtype
-
- -- N_Access_Procedure_Definition
- -- Sloc points to ACCESS
- -- Protected_Present (Flag15)
- -- Parameter_Specifications (List3) (set to No_List if no formal part)
-
- -----------------------------
- -- 3.10 Access Definition --
- -----------------------------
-
- -- ACCESS_DEFINITION ::= access SUBTYPE_MARK
-
- -- N_Access_Definition
- -- Sloc points to ACCESS
- -- Subtype_Mark (Node4)
-
- -----------------------------------------
- -- 3.10.1 Incomplete Type Declaration --
- -----------------------------------------
-
- -- INCOMPLETE_TYPE_DECLARATION ::=
- -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART];
-
- -- 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)
- -- Unknown_Discriminants_Present (Flag13) set if (<>) discriminant
-
- ----------------------------
- -- 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)
- -- Do_Access_Check (Flag11-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)
- -- Do_Access_Check (Flag11-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)
- -- Do_Access_Check (Flag11-Sem)
- -- 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_Access_Check (Flag11-Sem)
- -- Do_Discriminant_Check (Flag13-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.
-
- -- The flag OK_For_Stream is used in generated code to indicate that
- -- a stream attribute is permissible for a limited type, and results
- -- in the use of the stream attribute for the underlying full type,
- -- or in the case of a protected type, the components (including any
- -- disriminants) 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.
-
- -- 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_Access_Check (Flag11-Sem)
- -- Do_Overflow_Check (Flag17-Sem)
- -- Redundant_Use (Flag13-Sem)
- -- OK_For_Stream (Flag4-Sem)
- -- 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)
- -- Static_Processing_OK (Flag4-Sem)
- -- Compile_Time_Known_Aggregate (Flag18-Sem)
- -- Expansion_Delayed (Flag11-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: 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 runtime, 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)
-
- -- 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).
-
- ------------------------------------
- -- 4.3.1 Commponent 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)
- -- 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 {and RELATION} | RELATION {and then RELATION}
- -- | RELATION {or RELATION} | RELATION {or else RELATION}
- -- | RELATION {xor RELATION}
-
- -- RELATION ::=
- -- SIMPLE_EXPRESSION [RELATIONAL_OPERATOR SIMPLE_EXPRESSION]
- -- | SIMPLE_EXPRESSION [not] in RANGE
- -- | SIMPLE_EXPRESSION [not] in SUBTYPE_MARK
-
- -- 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
- -- consistuent components of an expression (e.g. identifier is
- -- an example of an expression).
-
- ------------------
- -- 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 accomodated by this count, then the count is simply left
- -- at the maximum value. This means that there are some pathalogical
- -- 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 RANGE
- -- | SIMPLE_EXPRESSION [not] in 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 prepared to deal with, and diagnose
- -- a simple expression other than a name for the right operand.
- -- This simplifies error recovery in the parser.
-
- -- N_In
- -- Sloc points to IN
- -- Left_Opnd (Node2)
- -- Right_Opnd (Node3)
- -- plus fields for expression
-
- -- N_Not_In
- -- Sloc points to NOT of NOT IN
- -- Left_Opnd (Node2)
- -- Right_Opnd (Node3)
- -- 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.
-
- --------------------------
- -- 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_Overflow_Check (Flag17-Sem)
- -- Do_Tag_Check (Flag13-Sem)
- -- Do_Length_Check (Flag4-Sem)
- -- Float_Truncate (Flag11-Sem)
- -- Rounded_Result (Flag18-Sem)
- -- Conversion_OK (Flag14-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 SUBTYPE_INDICATION | new QUALIFIED_EXPRESSION
-
- -- Sprint syntax (when storage pool present)
- -- new xxx (storage_pool = pool)
-
- -- N_Allocator
- -- Sloc points to NEW
- -- Expression (Node3) subtype indication or qualified expression
- -- Storage_Pool (Node1-Sem)
- -- Procedure_To_Call (Node4-Sem)
- -- No_Initialization (Flag13-Sem)
- -- Do_Storage_Check (Flag17-Sem)
- -- plus fields for expression
-
- ---------------------------------
- -- 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 genmerator
- -- 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
- -- | 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
- -- | ACCEPT_STATEMENT | SELECT_STATEMENT
-
- -------------------------
- -- 5.1 Null Statement --
- -------------------------
-
- -- NULL_STATEMENT ::= null;
-
- -- N_Null_Statement
- -- Sloc points to NULL
-
- ----------------
- -- 5.1 Label --
- ----------------
-
- -- LABEL ::= <<label_STATEMENT_IDENTIFIER>>
-
- -- 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 (Flag11-Sem)
-
- -------------------------------
- -- 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_Tag_Check (Flag13-Sem)
- -- Do_Length_Check (Flag4-Sem)
- -- Forwards_OK (Flag5-Sem)
- -- Backwards_OK (Flag6-Sem)
- -- No_Ctrl_Actions (Flag7-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).
-
- -----------------------
- -- 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 No_Uint 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 No_Uint if expander generated)
-
- -------------------------------------
- -- 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)
-
- -------------------------
- -- 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)
-
- --------------------------
- -- 5.5 Iteration Scheme --
- --------------------------
-
- -- ITERATION_SCHEME ::=
- -- while CONDITION | for LOOP_PARAMETER_SPECIFICATION
-
- -- 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)
- -- 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)
-
- --------------------------
- -- 5.6 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 in the implicit label declaration which occurs in
- -- the innermost enclosing block.
-
- -- Note: there is always a block statement identifier present in
- -- the tree, even if none was given in the source. In the case where
- -- no block identifier is given in the source, the parser creates
- -- a name of the form _Block_n, where n is a decimal integer (the
- -- two underlines ensure that the block 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
- -- blocks constructed by the expander, and the semantic analyzer
- -- creates and supplies dummy names for the blocks).
-
- -- 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)
-
- -------------------------
- -- 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)
-
- -------------------------
- -- 5.9 Goto Statement --
- -------------------------
-
- -- GOTO_STATEMENT ::= goto label_NAME;
-
- -- N_Goto_Statement
- -- Sloc points to GOTO
- -- Name (Node2)
- -- Exception_Junk (Flag11-Sem)
-
- ---------------------------------
- -- 6.1 Subprogram Declaration --
- ---------------------------------
-
- -- SUBPROGRAM_DECLARATION ::= SUBPROGRAM_SPECIFICATION;
-
- -- 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;
-
- -- N_Abstract_Subprogram_Declaration
- -- Sloc points to ABSTRACT
- -- Specification (Node1)
-
- -----------------------------------
- -- 6.1 Subprogram Specification --
- -----------------------------------
-
- -- SUBPROGRAM_SPECIFICATION ::=
- -- procedure DEFINING_PROGRAM_UNIT_NAME PARAMETER_PROFILE
- -- | 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)
- -- Subtype_Mark (Node4) for return type
- -- Generic_Parent (Node5-Sem)
-
- -- 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)
-
- ---------------------
- -- 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 SUBTYPE_MARK
-
- -- 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 : MODE 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_Parameter_Specification
- -- Sloc points to first identifier
- -- Defining_Identifier (Node1)
- -- In_Present (Flag15)
- -- Out_Present (Flag17)
- -- 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 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)
- -- Has_Priority_Pragma (Flag6-Sem)
- -- Is_Protected_Subprogram_Body (Flag7-Sem)
- -- Is_Task_Master (Flag5-Sem)
- -- Was_Originally_Stub (Flag13-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)
- -- 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)
- -- Do_Tag_Check (Flag13-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, since this node is
- -- only used if a formal parameter selector name is present)
- -- Explicit_Actual_Parameter (Node3)
- -- Next_Named_Actual (Node4-Sem)
-
- ---------------------------
- -- 6.4 Actual Parameter --
- ---------------------------
-
- -- EXPLICIT_ACTUAL_PARAMETER ::= EXPRESSION | variable_NAME
-
- ---------------------------
- -- 6.5 Return Statement --
- ---------------------------
-
- -- RETURN_STATEMENT ::= return [EXPRESSION];
-
- -- N_Return_Statement
- -- Sloc points to RETURN
- -- Expression (Node3) (set to Empty if no expression present)
- -- Storage_Pool (Node1-Sem)
- -- Procedure_To_Call (Node4-Sem)
- -- Do_Tag_Check (Flag13-Sem)
- -- Return_Type (Node2-Sem)
- -- By_Ref (Flag5-Sem)
-
- -- Note: if a range check is required, then Do_Range_Check is set
- -- on the Expression. The range check is against Return_Type.
-
- ------------------------------
- -- 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 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)
-
- -----------------------
- -- 7.1 Package Body --
- -----------------------
-
- -- PACKAGE_BODY ::=
- -- package body DEFINING_PROGRAM_UNIT_NAME 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;
-
- -- 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] new ancestor_SUBTYPE_INDICATION with private;
-
- -- Note: 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)
- -- Subtype_Indication (Node5)
-
- ---------------------
- -- 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 type SUBTYPE_MARK {, SUBTYPE_MARK};
-
- -- Note: use type clause is not permitted in Ada 83 mode
-
- -- N_Use_Type_Clause
- -- Sloc points to USE
- -- Subtype_Marks (List2)
- -- Next_Use_Clause (Node3-Sem)
- -- Hidden_By_Use_Clause (Elist4-Sem)
-
- -------------------------------
- -- 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 : SUBTYPE_MARK renames object_NAME;
-
- -- N_Object_Renaming_Declaration
- -- Sloc points to first identifier
- -- Defining_Identifier (Node1)
- -- Subtype_Mark (Node4)
- -- Name (Node2)
- -- Corresponding_Generic_Association (Node5-Sem)
-
- -----------------------------------------
- -- 8.5 Exception Renaming Declaration --
- -----------------------------------------
-
- -- EXCEPTION_RENAMING_DECLARATION ::=
- -- DEFINING_IDENTIFIER : exception renames exception_NAME;
-
- -- 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;
-
- -- 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;
-
- -- N_Subprogram_Renaming_Declaration
- -- Sloc points to RENAMES
- -- Specification (Node1)
- -- Name (Node2)
- -- Parent_Spec (Node4-Sem)
- -- Corresponding_Spec (Node5-Sem)
-
- -----------------------------------------
- -- 8.5.5 Generic Renaming Declaration --
- -----------------------------------------
-
- -- GENERIC_RENAMING_DECLARATION ::=
- -- generic package DEFINING_PROGRAM_UNIT_NAME
- -- renames generic_package_NAME
- -- | generic procedure DEFINING_PROGRAM_UNIT_NAME
- -- renames generic_procedure_NAME
- -- | generic function DEFINING_PROGRAM_UNIT_NAME
- -- renames generic_function_NAME
-
- -- 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]
- -- [is TASK_DEFINITITION];
-
- -- N_Task_Type_Declaration
- -- Sloc points to TASK
- -- Defining_Identifier (Node1)
- -- Task_Body_Procedure (Node2-Sem)
- -- Discriminant_Specifications (List4) (set to No_List if no
- -- discriminant part)
- -- Task_Definition (Node3) (set to Empty if not present)
- -- Corresponding_Body (Node5-Sem)
-
- ----------------------------------
- -- 9.1 Single Task Declaration --
- ----------------------------------
-
- -- SINGLE_TASK_DECLARATION ::=
- -- task DEFINING_IDENTIFIER [is TASK_DEFINITION];
-
- -- N_Single_Task_Declaration
- -- Sloc points to TASK
- -- Defining_Identifier (Node1)
- -- 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_Priority_Pragma (Flag6-Sem)
- -- Has_Storage_Size_Pragma (Flag5-Sem)
- -- Has_Task_Info_Pragma (Flag7-Sem)
- -- Has_Task_Name_Pragma (Flag8-Sem)
-
- --------------------
- -- 9.1 Task Item --
- --------------------
-
- -- TASK_ITEM ::= ENTRY_DECLARATION | REPRESENTATION_CLAUSE
-
- --------------------
- -- 9.1 Task Body --
- --------------------
-
- -- TASK_BODY ::=
- -- task body task_DEFINING_IDENTIFIER 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]
- -- is 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)
- -- Protected_Definition (Node3)
- -- Corresponding_Body (Node5-Sem)
-
- ---------------------------------------
- -- 9.4 Single Protected Declaration --
- ---------------------------------------
-
- -- SINGLE_PROTECTED_DECLARATION ::=
- -- protected DEFINING_IDENTIFIER is PROTECTED_DEFINITION;
-
- -- Note: single protected declarations are not allowed in Ada 83 mode
-
- -- N_Single_Protected_Declaration
- -- Sloc points to PROTECTED
- -- Defining_Identifier (Node1)
- -- 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)
- -- Has_Priority_Pragma (Flag6-Sem)
-
- ------------------------------------------
- -- 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 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 ::=
- -- entry DEFINING_IDENTIFIER
- -- [(DISCRETE_SUBTYPE_DEFINITION)] PARAMETER_PROFILE;
-
- -- 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)
-
- -----------------------------
- -- 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 alernative 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 ::=
- -- ENTRY_CALL_STATEMENT [SEQUENCE_OF_STATEMENTS]
-
- -- 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 ::= ENTRY_CALL_STATEMENT | 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 they the trees are discarded in any case.
-
- ------------------------------
- -- 10.1.1 Compilation Unit --
- ------------------------------
-
- -- COMPILATION_UNIT ::=
- -- CONTEXT_CLAUSE LIBRARY_ITEM
- -- | CONTEXT_CLAUSE SUBUNIT
-
- -- The N_Compilation_Unit node itself respresents 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 three 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
- -- First_Inlined_Subprogram (Node3-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)
-
- --------------------------
- -- 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 clause.
-
- ----------------------------------------
- -- 10.1.1 Library Unit Declararation --
- ----------------------------------------
-
- -- LIBRARY_UNIT_DECLARATION ::=
- -- SUBPROGRAM_DECLARATION | PACKAGE_DECLARATION
- -- | GENERIC_DECLARATION | GENERIC_INSTANTIATION
-
- -------------------------------------------------
- -- 10.1.1 Library Unit Renaming Declararation --
- -------------------------------------------------
-
- -- 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
- -- Name (Node2)
- -- 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 (Flag15-Sem)
- -- Implicit_With (Flag17-Sem)
- -- Unreferenced_In_Spec (Flag7-Sem)
- -- No_Entities_Ref_In_Spec (Flag8-Sem)
-
- ----------------------
- -- With_Type clause --
- ----------------------
-
- -- This is a GNAT extension, used to implement mutually recursive
- -- types declared in different packages.
-
- -- WITH_TYPE_CLAUSE ::=
- -- with type type_NAME is access | with type type_NAME is tagged
-
- -- N_With_Type_Clause
- -- Sloc points to first token of type name
- -- Name (Node2)
- -- Tagged_Present (Flag15)
-
- ---------------------
- -- 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;
-
- -- N_Subprogram_Body_Stub
- -- Sloc points to FUNCTION or PROCEDURE
- -- Specification (Node1)
- -- 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;
-
- -- N_Package_Body_Stub
- -- Sloc points to PACKAGE
- -- Defining_Identifier (Node1)
- -- 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;
-
- -- N_Task_Body_Stub
- -- Sloc points to TASK
- -- Defining_Identifier (Node1)
- -- 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;
-
- -- Note: protected body stubs are not allowed in Ada 83 mode
-
- -- N_Protected_Body_Stub
- -- Sloc points to PROTECTED
- -- Defining_Identifier (Node1)
- -- 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;
-
- -- 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 souce 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)
- -- 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. Also there is a current restriction
- -- that exception handles and a cleanup cannot be present in the same
- -- frame, so at least one of Exception_Handlers or the Identifier must
- -- be missing.
-
- -- Actually, more accurately, this restriction applies to the original
- -- source program. In the expanded tree, if the At_End_Proc field is
- -- present, then there will also be an exception handler of the form:
-
- -- when all others =>
- -- cleanup;
- -- raise;
-
- -- where cleanup is the procedure to be generated. 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)
- -- Zero_Cost_Handling (Flag5-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)
- -- Zero_Cost_Handling (Flag5-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];
-
- -- N_Raise_Statement
- -- Sloc points to RAISE
- -- Name (Node2) (set to Empty if no exception name present)
-
- -------------------------------
- -- 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;
-
- -- 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;
-
- -- 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];
- -- | procedure DEFINING_PROGRAM_UNIT_NAME is
- -- new generic_procedure_NAME [GENERIC_ACTUAL_PART];
- -- | function DEFINING_DESIGNATOR is
- -- new generic_function_NAME [GENERIC_ACTUAL_PART];
-
- -- 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)
- -- 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)
- -- ABE_Is_Certain (Flag18-Sem)
-
- ------------------------------
- -- 12.3 Generic Actual Part --
- ------------------------------
-
- -- GENERIC_ACTUAL_PART ::=
- -- (GENERIC_ASSOCIATION {, GENERIC_ASSOCIATION})
-
- -------------------------------
- -- 12.3 Generic Association --
- -------------------------------
-
- -- GENERIC_ASSOCIATION ::=
- -- [generic_formal_parameter_SELECTOR_NAME =>]
- -- EXPLICIT_GENERIC_ACTUAL_PARAMETER
-
- -- Note: unlike the procedure call case, a generic association node
- -- is generated for every association, even if no formal 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.
-
- -- 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)
-
- ---------------------------------------------
- -- 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 SUBTYPE_MARK [:= DEFAULT_EXPRESSION];
-
- -- 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)
- -- Subtype_Mark (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)
-
- -----------------------------------
- -- 12.5 Formal Type Declaration --
- -----------------------------------
-
- -- FORMAL_TYPE_DECLARATION ::=
- -- type DEFINING_IDENTIFIER [DISCRIMINANT_PART]
- -- is FORMAL_TYPE_DEFINITION;
-
- -- 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
-
- ---------------------------------------------
- -- 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] new SUBTYPE_MARK [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)
-
- ---------------------------------------------
- -- 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
-
- -----------------------------------------
- -- 12.6 Formal Subprogram Declaration --
- -----------------------------------------
-
- -- FORMAL_SUBPROGRAM_DECLARATION ::=
- -- with SUBPROGRAM_SPECIFICATION [is SUBPROGRAM_DEFAULT];
-
- -- N_Formal_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_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;
-
- -- 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 ::=
- -- (<>) | [GENERIC_ACTUAL_PART]
-
- -- 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).
-
- ---------------------------------
- -- 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 the alignment 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 case,
- -- or in appropriate expansion actions (e.g. in the storage size
- -- case). For the alignment case, Gigi requires that the expression
- -- be an integer literal.
-
- -- 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
- -- Next_Rep_Item (Node4-Sem)
- -- From_At_Mod (Flag4-Sem)
-
- ---------------------------------------------
- -- 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 (Node4-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 (Node4-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 (...));
-
- -- or
-
- -- Asm_Insn'(Asm_Volatile (...))
-
- -- See package System.Machine_Code in file s-maccod.ads for details
- -- on the allowed parameters to Asm[_Volatile]. 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.
-
- ----------------------------
- -- Conditional Expression --
- ----------------------------
-
- -- This node is used to represent an expression corresponding to the
- -- C construct (condition ? then-expression : else_expression), where
- -- Expressions is a three element list, whose first expression is the
- -- condition, and whose second and third expressions are the then and
- -- else expressions respectively.
-
- -- 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.
-
- -- Sprint syntax: (if expr then expr else expr)
-
- -- N_Conditional_Expression
- -- Sloc points to related node
- -- Expressions (List1)
- -- Then_Actions (List2-Sem)
- -- Else_Actions (List3-Sem)
- -- plus fields for expression
-
- -- Note: in the case where a debug source file is generated, the Sloc
- -- for this node points to the IF keyword in the Sprint file output.
-
- -------------------
- -- 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)
- -- Redundant_Use (Flag13-Sem)
- -- Has_Private_View (Flag11-Sem) set in generic units.
- -- plus fields for expression
-
- --------------------
- -- 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 (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.
-
- --------------------------------
- -- 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
- -- the Par.Labl subunit in file par-labl.adb).
-
- -- Sprint syntax: labelname : label;
-
- -- N_Implicit_Label_Declaration
- -- Sloc points to the << of the label
- -- 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 that 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 wrong 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 subexprssion 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.
-
- -- 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]
- -- or: [xxx_error when condition]
-
- -- N_Raise_Constraint_Error
- -- Sloc references related construct
- -- Condition (Node1) (set to Empty if no condition)
- -- Sloc is copied from the expression generating the exception
- -- plus fields for expression
-
- -- N_Raise_Program_Error
- -- Sloc references related construct
- -- Condition (Node1) (set to Empty if no condition)
- -- Sloc is copied from the construct generating the exception
- -- plus fields for expression
-
- -- N_Raise_Storage_Error
- -- Sloc references related construct
- -- Condition (Node1) (set to Empty if no condition)
- -- Sloc is copied from the construct generating the exception
- -- plus fields for expression
-
- -- Note: 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.
-
- ---------------
- -- 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.
-
- -- 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.
-
- ---------------------
- -- 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)
- -- 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 facilitiate 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,
- N_Pragma_Argument_Association,
-
- -- N_Has_Etype
- 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_Divide,
- N_Op_Expon,
- N_Op_Mod,
- N_Op_Multiply,
- N_Op_Rem,
- N_Op_Subtract,
-
- -- 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_And_Then,
- N_Conditional_Expression,
- N_Explicit_Dereference,
- N_Function_Call,
- N_In,
- N_Indexed_Component,
- N_Integer_Literal,
- N_Not_In,
- N_Null,
- N_Or_Else,
- N_Procedure_Call_Statement,
- N_Qualified_Expression,
-
- -- N_Raise_xxx_Error, N_Subexpr, N_Has_Etype
-
- N_Raise_Constraint_Error,
- N_Raise_Program_Error,
- N_Raise_Storage_Error,
-
- -- N_Subexpr, N_Has_Etype
-
- N_Aggregate,
- N_Allocator,
- N_Extension_Aggregate,
- N_Range,
- N_Real_Literal,
- N_Reference,
- N_Selected_Component,
- N_Slice,
- N_String_Literal,
- 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_Formal_Object_Declaration,
- N_Formal_Type_Declaration,
- N_Full_Type_Declaration,
- N_Incomplete_Type_Declaration,
- 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,
-
- -- (nothing special)
- N_Entry_Index_Specification,
- N_Freeze_Entity,
-
- -- 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_Function_Instantiation,
- N_Package_Instantiation,
- N_Procedure_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_Declarations, 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_Delay_Relative_Statement,
- N_Delay_Until_Statement,
- N_Entry_Call_Statement,
- N_Free_Statement,
- N_Goto_Statement,
- N_Loop_Statement,
- N_Null_Statement,
- N_Raise_Statement,
- N_Requeue_Statement,
- N_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,
-
- -- Other nodes (not part of any subtype class)
- N_Abortable_Part,
- N_Abstract_Subprogram_Declaration,
- N_Access_Definition,
- N_Access_To_Object_Definition,
- N_Case_Statement_Alternative,
- N_Compilation_Unit,
- N_Compilation_Unit_Aux,
- N_Component_Association,
- N_Component_List,
- 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_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_Signed_Integer_Type_Definition,
- N_Formal_Subprogram_Declaration,
- 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_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_With_Type_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_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_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_Procedure_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!
-
- subtype N_Has_Etype is Node_Kind range
- N_Error ..
- N_Subtype_Indication;
-
- 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_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_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_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_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_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 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 Array_Aggregate
- (N : Node_Id) return Node_Id; -- Node3
-
- 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 Char_Code; -- Char_Code2
-
- function Chars
- (N : Node_Id) return Name_Id; -- Name1
-
- function Choice_Parameter
- (N : Node_Id) return Node_Id; -- Node2
-
- function Choices
- (N : Node_Id) return List_Id; -- List1
-
- 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_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 Condition
- (N : Node_Id) return Node_Id; -- Node1
-
- function Condition_Actions
- (N : Node_Id) return List_Id; -- List3
-
- 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_Items
- (N : Node_Id) return List_Id; -- List1
-
- function Controlling_Argument
- (N : Node_Id) return Node_Id; -- Node1
-
- function Conversion_OK
- (N : Node_Id) return Boolean; -- Flag14
-
- function Corresponding_Body
- (N : Node_Id) return Node_Id; -- Node5
-
- 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_Stub
- (N : Node_Id) return Node_Id; -- Node3
-
- function Dcheck_Function
- (N : Node_Id) return Entity_Id; -- Node5
-
- function Debug_Statement
- (N : Node_Id) return Node_Id; -- Node3
-
- function Declarations
- (N : Node_Id) return List_Id; -- List2
-
- function Default_Expression
- (N : Node_Id) return Node_Id; -- Node5
-
- 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_Finalize_Attach
- (N : Node_Id) return Boolean; -- Flag14
-
- 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_Access_Check
- (N : Node_Id) return Boolean; -- Flag11
-
- function Do_Accessibility_Check
- (N : Node_Id) return Boolean; -- Flag13
-
- function Do_Discriminant_Check
- (N : Node_Id) return Boolean; -- Flag13
-
- 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_Present
- (N : Node_Id) return Boolean; -- Flag15
-
- 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 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; -- Flag11
-
- 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_At_Mod
- (N : Node_Id) return Boolean; -- Flag4
-
- 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_Dynamic_Length_Check
- (N : Node_Id) return Boolean; -- Flag10
-
- function Has_Dynamic_Range_Check
- (N : Node_Id) return Boolean; -- Flag12
-
- function Has_No_Elaboration_Code
- (N : Node_Id) return Boolean; -- Flag17
-
- function Has_Priority_Pragma
- (N : Node_Id) return Boolean; -- Flag6
-
- function Has_Private_View
- (N : Node_Id) return Boolean; -- Flag11
-
- function Has_Storage_Size_Pragma
- (N : Node_Id) return Boolean; -- Flag5
-
- function Has_Task_Info_Pragma
- (N : Node_Id) return Boolean; -- Flag7
-
- function Has_Task_Name_Pragma
- (N : Node_Id) return Boolean; -- Flag8
-
- function Has_Wide_Character
- (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 Implicit_With
- (N : Node_Id) return Boolean; -- Flag17
-
- function In_Present
- (N : Node_Id) return Boolean; -- Flag15
-
- function Includes_Infinities
- (N : Node_Id) return Boolean; -- Flag11
-
- function Instance_Spec
- (N : Node_Id) return Node_Id; -- Node5
-
- function Intval
- (N : Node_Id) return Uint; -- Uint3
-
- function Is_Asynchronous_Call_Block
- (N : Node_Id) return Boolean; -- Flag7
-
- 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_Machine_Number
- (N : Node_Id) return Boolean; -- Flag11
-
- function Is_Overloaded
- (N : Node_Id) return Boolean; -- Flag5
-
- function Is_Power_Of_2_For_Shift
- (N : Node_Id) return Boolean; -- Flag13
-
- function Is_Protected_Subprogram_Body
- (N : Node_Id) return Boolean; -- Flag7
-
- 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 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_Present
- (N : Node_Id) return Boolean; -- Flag17
-
- function Literals
- (N : Node_Id) return List_Id; -- List1
-
- 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_Not_Freeze
- (N : Node_Id) return Boolean; -- Flag8
-
- 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_Named_Actual
- (N : Node_Id) return Node_Id; -- Node4
-
- function Next_Rep_Item
- (N : Node_Id) return Node_Id; -- Node4
-
- function Next_Use_Clause
- (N : Node_Id) return Node_Id; -- Node3
-
- function No_Ctrl_Actions
- (N : Node_Id) return Boolean; -- Flag7
-
- function No_Entities_Ref_In_Spec
- (N : Node_Id) return Boolean; -- Flag8
-
- function No_Initialization
- (N : Node_Id) return Boolean; -- Flag13
-
- function Null_Present
- (N : Node_Id) return Boolean; -- Flag13
-
- function Null_Record_Present
- (N : Node_Id) return Boolean; -- Flag17
-
- function Object_Definition
- (N : Node_Id) return Node_Id; -- Node4
-
- function OK_For_Stream
- (N : Node_Id) return Boolean; -- Flag4
-
- function Original_Discriminant
- (N : Node_Id) return Node_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 Pragmas_After
- (N : Node_Id) return List_Id; -- List5
-
- function Pragmas_Before
- (N : Node_Id) return List_Id; -- List4
-
- function Prefix
- (N : Node_Id) return Node_Id; -- Node3
-
- 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; -- Node4
-
- 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; -- Flag15
-
- 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 Record_Extension_Part
- (N : Node_Id) return Node_Id; -- Node3
-
- function Redundant_Use
- (N : Node_Id) return Boolean; -- Flag13
-
- function Return_Type
- (N : Node_Id) return Node_Id; -- Node2
-
- 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 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 Statements
- (N : Node_Id) return List_Id; -- List3
-
- function Static_Processing_OK
- (N : Node_Id) return Boolean; -- Flag4
-
- function Storage_Pool
- (N : Node_Id) return Node_Id; -- Node1
-
- 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 Tagged_Present
- (N : Node_Id) return Boolean; -- Flag15
-
- function Target_Type
- (N : Node_Id) return Entity_Id; -- Node2
-
- function Task_Body_Procedure
- (N : Node_Id) return Entity_Id; -- Node2
-
- function Task_Definition
- (N : Node_Id) return Node_Id; -- Node3
-
- 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 Was_Originally_Stub
- (N : Node_Id) return Boolean; -- Flag13
-
- function Zero_Cost_Handling
- (N : Node_Id) return Boolean; -- Flag5
-
- -- 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_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_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_Array_Aggregate
- (N : Node_Id; Val : Node_Id); -- Node3
-
- 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 : Char_Code); -- Char_Code2
-
- procedure Set_Chars
- (N : Node_Id; Val : Name_Id); -- Name1
-
- procedure Set_Choice_Parameter
- (N : Node_Id; Val : Node_Id); -- Node2
-
- procedure Set_Choices
- (N : Node_Id; Val : List_Id); -- List1
-
- 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_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_Condition
- (N : Node_Id; Val : Node_Id); -- Node1
-
- procedure Set_Condition_Actions
- (N : Node_Id; Val : List_Id); -- List3
-
- 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_Controlling_Argument
- (N : Node_Id; Val : Node_Id); -- Node1
-
- procedure Set_Conversion_OK
- (N : Node_Id; Val : Boolean := True); -- Flag14
-
- procedure Set_Corresponding_Body
- (N : Node_Id; Val : Node_Id); -- Node5
-
- 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_Stub
- (N : Node_Id; Val : Node_Id); -- Node3
-
- procedure Set_Dcheck_Function
- (N : Node_Id; Val : Entity_Id); -- Node5
-
- procedure Set_Debug_Statement
- (N : Node_Id; Val : Node_Id); -- Node3
-
- procedure Set_Declarations
- (N : Node_Id; Val : List_Id); -- List2
-
- procedure Set_Default_Expression
- (N : Node_Id; Val : Node_Id); -- Node5
-
- 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_Finalize_Attach
- (N : Node_Id; Val : Boolean := True); -- Flag14
-
- 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_Access_Check
- (N : Node_Id; Val : Boolean := True); -- Flag11
-
- procedure Set_Do_Accessibility_Check
- (N : Node_Id; Val : Boolean := True); -- Flag13
-
- procedure Set_Do_Discriminant_Check
- (N : Node_Id; Val : Boolean := True); -- Flag13
-
- 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_Present
- (N : Node_Id; Val : Boolean := True); -- Flag15
-
- 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); -- Flag11
-
- 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_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_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_No_Elaboration_Code
- (N : Node_Id; Val : Boolean := True); -- Flag17
-
- procedure Set_Has_Priority_Pragma
- (N : Node_Id; Val : Boolean := True); -- Flag6
-
- procedure Set_Has_Private_View
- (N : Node_Id; Val : Boolean := True); -- Flag11
-
- procedure Set_Has_Storage_Size_Pragma
- (N : Node_Id; Val : Boolean := True); -- Flag5
-
- procedure Set_Has_Task_Info_Pragma
- (N : Node_Id; Val : Boolean := True); -- Flag7
-
- procedure Set_Has_Task_Name_Pragma
- (N : Node_Id; Val : Boolean := True); -- Flag8
-
- procedure Set_Has_Wide_Character
- (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_Implicit_With
- (N : Node_Id; Val : Boolean := True); -- Flag17
-
- procedure Set_In_Present
- (N : Node_Id; Val : Boolean := True); -- Flag15
-
- procedure Set_Includes_Infinities
- (N : Node_Id; Val : Boolean := True); -- Flag11
-
- procedure Set_Instance_Spec
- (N : Node_Id; Val : Node_Id); -- Node5
-
- procedure Set_Intval
- (N : Node_Id; Val : Uint); -- Uint3
-
- procedure Set_Is_Asynchronous_Call_Block
- (N : Node_Id; Val : Boolean := True); -- Flag7
-
- 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_Machine_Number
- (N : Node_Id; Val : Boolean := True); -- Flag11
-
- 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_Protected_Subprogram_Body
- (N : Node_Id; Val : Boolean := True); -- Flag7
-
- 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_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_Present
- (N : Node_Id; Val : Boolean := True); -- Flag17
-
- procedure Set_Literals
- (N : Node_Id; Val : List_Id); -- List1
-
- 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_Not_Freeze
- (N : Node_Id; Val : Boolean := True); -- Flag8
-
- 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_Named_Actual
- (N : Node_Id; Val : Node_Id); -- Node4
-
- procedure Set_Next_Rep_Item
- (N : Node_Id; Val : Node_Id); -- Node4
-
- 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_Entities_Ref_In_Spec
- (N : Node_Id; Val : Boolean := True); -- Flag8
-
- procedure Set_No_Initialization
- (N : Node_Id; Val : Boolean := True); -- Flag13
-
- procedure Set_Null_Present
- (N : Node_Id; Val : Boolean := True); -- Flag13
-
- 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_OK_For_Stream
- (N : Node_Id; Val : Boolean := True); -- Flag4
-
- procedure Set_Original_Discriminant
- (N : Node_Id; Val : Node_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_Pragmas_After
- (N : Node_Id; Val : List_Id); -- List5
-
- procedure Set_Pragmas_Before
- (N : Node_Id; Val : List_Id); -- List4
-
- procedure Set_Prefix
- (N : Node_Id; Val : Node_Id); -- Node3
-
- 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); -- Node4
-
- 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); -- Flag15
-
- 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_Record_Extension_Part
- (N : Node_Id; Val : Node_Id); -- Node3
-
- procedure Set_Redundant_Use
- (N : Node_Id; Val : Boolean := True); -- Flag13
-
- procedure Set_Return_Type
- (N : Node_Id; Val : Node_Id); -- Node2
-
- 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_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_Statements
- (N : Node_Id; Val : List_Id); -- List3
-
- procedure Set_Static_Processing_OK
- (N : Node_Id; Val : Boolean); -- Flag4
-
- procedure Set_Storage_Pool
- (N : Node_Id; Val : Node_Id); -- Node1
-
- 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_Tagged_Present
- (N : Node_Id; Val : Boolean := True); -- Flag15
-
- procedure Set_Target_Type
- (N : Node_Id; Val : Entity_Id); -- Node2
-
- procedure Set_Task_Body_Procedure
- (N : Node_Id; Val : Entity_Id); -- Node2
-
- procedure Set_Task_Definition
- (N : Node_Id; Val : Node_Id); -- Node3
-
- 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_Was_Originally_Stub
- (N : Node_Id; Val : Boolean := True); -- Flag13
-
- procedure Set_Zero_Cost_Handling
- (N : Node_Id; Val : Boolean := True); -- Flag5
-
- -------------------------
- -- 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);
-
- --------------------------------------
- -- Logical Access to End_Span Field --
- --------------------------------------
-
- 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.
-
- --------------------
- -- 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_Types_To_Process);
- pragma Inline (Actions);
- pragma Inline (Activation_Chain_Entity);
- pragma Inline (Acts_As_Spec);
- 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 (Array_Aggregate);
- 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 (Choice_Parameter);
- pragma Inline (Choices);
- pragma Inline (Compile_Time_Known_Aggregate);
- pragma Inline (Component_Associations);
- pragma Inline (Component_Clauses);
- pragma Inline (Component_Items);
- pragma Inline (Component_List);
- pragma Inline (Component_Name);
- pragma Inline (Condition);
- pragma Inline (Condition_Actions);
- pragma Inline (Constant_Present);
- pragma Inline (Constraint);
- pragma Inline (Constraints);
- pragma Inline (Context_Installed);
- pragma Inline (Context_Items);
- pragma Inline (Controlling_Argument);
- pragma Inline (Conversion_OK);
- pragma Inline (Corresponding_Body);
- pragma Inline (Corresponding_Generic_Association);
- pragma Inline (Corresponding_Integer_Value);
- pragma Inline (Corresponding_Spec);
- pragma Inline (Corresponding_Stub);
- pragma Inline (Dcheck_Function);
- pragma Inline (Debug_Statement);
- pragma Inline (Declarations);
- pragma Inline (Default_Expression);
- pragma Inline (Default_Name);
- pragma Inline (Defining_Identifier);
- pragma Inline (Defining_Unit_Name);
- pragma Inline (Delay_Alternative);
- pragma Inline (Delay_Finalize_Attach);
- 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_Access_Check);
- 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_Present);
- 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 (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_Junk);
- pragma Inline (Exception_Handlers);
- 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_At_Mod);
- 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_Dynamic_Length_Check);
- pragma Inline (Has_Dynamic_Range_Check);
- pragma Inline (Has_No_Elaboration_Code);
- pragma Inline (Has_Priority_Pragma);
- pragma Inline (Has_Private_View);
- pragma Inline (Has_Storage_Size_Pragma);
- pragma Inline (Has_Task_Info_Pragma);
- pragma Inline (Has_Task_Name_Pragma);
- pragma Inline (Has_Wide_Character);
- pragma Inline (Hidden_By_Use_Clause);
- pragma Inline (High_Bound);
- pragma Inline (Identifier);
- pragma Inline (Implicit_With);
- pragma Inline (Includes_Infinities);
- pragma Inline (In_Present);
- pragma Inline (Instance_Spec);
- pragma Inline (Intval);
- pragma Inline (Is_Asynchronous_Call_Block);
- pragma Inline (Is_Component_Left_Opnd);
- pragma Inline (Is_Component_Right_Opnd);
- pragma Inline (Is_Controlling_Actual);
- pragma Inline (Is_Machine_Number);
- pragma Inline (Is_Overloaded);
- pragma Inline (Is_Power_Of_2_For_Shift);
- pragma Inline (Is_Protected_Subprogram_Body);
- 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_Present);
- pragma Inline (Literals);
- pragma Inline (Loop_Actions);
- pragma Inline (Loop_Parameter_Specification);
- pragma Inline (Low_Bound);
- pragma Inline (Mod_Clause);
- pragma Inline (More_Ids);
- pragma Inline (Must_Not_Freeze);
- pragma Inline (Name);
- pragma Inline (Names);
- pragma Inline (Next_Entity);
- pragma Inline (Next_Named_Actual);
- pragma Inline (Next_Rep_Item);
- pragma Inline (Next_Use_Clause);
- pragma Inline (No_Ctrl_Actions);
- pragma Inline (No_Entities_Ref_In_Spec);
- pragma Inline (No_Initialization);
- pragma Inline (Null_Present);
- pragma Inline (Null_Record_Present);
- pragma Inline (Object_Definition);
- pragma Inline (OK_For_Stream);
- pragma Inline (Original_Discriminant);
- 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 (Pragmas_After);
- pragma Inline (Pragmas_Before);
- pragma Inline (Prefix);
- 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 (Realval);
- pragma Inline (Real_Range_Specification);
- pragma Inline (Record_Extension_Part);
- pragma Inline (Redundant_Use);
- pragma Inline (Return_Type);
- pragma Inline (Reverse_Present);
- pragma Inline (Right_Opnd);
- pragma Inline (Rounded_Result);
- 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 (Statements);
- pragma Inline (Static_Processing_OK);
- pragma Inline (Storage_Pool);
- pragma Inline (Strval);
- pragma Inline (Subtype_Indication);
- pragma Inline (Subtype_Mark);
- pragma Inline (Subtype_Marks);
- pragma Inline (Tagged_Present);
- pragma Inline (Target_Type);
- pragma Inline (Task_Body_Procedure);
- pragma Inline (Task_Definition);
- 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 (Was_Originally_Stub);
- pragma Inline (Zero_Cost_Handling);
-
- 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_Types_To_Process);
- pragma Inline (Set_Actions);
- pragma Inline (Set_Activation_Chain_Entity);
- pragma Inline (Set_Acts_As_Spec);
- 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_Assignment_OK);
- pragma Inline (Set_Associated_Node);
- pragma Inline (Set_At_End_Proc);
- 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_To_Inline);
- pragma Inline (Set_Body_Required);
- pragma Inline (Set_By_Ref);
- pragma Inline (Set_Box_Present);
- pragma Inline (Set_Char_Literal_Value);
- pragma Inline (Set_Chars);
- pragma Inline (Set_Choice_Parameter);
- pragma Inline (Set_Choices);
- pragma Inline (Set_Compile_Time_Known_Aggregate);
- pragma Inline (Set_Component_Associations);
- pragma Inline (Set_Component_Clauses);
- pragma Inline (Set_Component_Items);
- pragma Inline (Set_Component_List);
- pragma Inline (Set_Component_Name);
- pragma Inline (Set_Condition);
- pragma Inline (Set_Condition_Actions);
- 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_Controlling_Argument);
- pragma Inline (Set_Conversion_OK);
- pragma Inline (Set_Corresponding_Body);
- pragma Inline (Set_Corresponding_Generic_Association);
- pragma Inline (Set_Corresponding_Integer_Value);
- pragma Inline (Set_Corresponding_Spec);
- pragma Inline (Set_Corresponding_Stub);
- pragma Inline (Set_Dcheck_Function);
- pragma Inline (Set_Debug_Statement);
- pragma Inline (Set_Declarations);
- pragma Inline (Set_Default_Expression);
- pragma Inline (Set_Default_Name);
- pragma Inline (Set_Defining_Identifier);
- pragma Inline (Set_Defining_Unit_Name);
- pragma Inline (Set_Delay_Alternative);
- pragma Inline (Set_Delay_Finalize_Attach);
- 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_Access_Check);
- pragma Inline (Set_Do_Accessibility_Check);
- pragma Inline (Set_Do_Discriminant_Check);
- pragma Inline (Set_Do_Length_Check);
- pragma Inline (Set_Do_Division_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_Present);
- pragma Inline (Set_Elaborate_All_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_Junk);
- pragma Inline (Set_Exception_Handlers);
- 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_At_Mod);
- 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_Dynamic_Length_Check);
- pragma Inline (Set_Has_Dynamic_Range_Check);
- pragma Inline (Set_Has_No_Elaboration_Code);
- pragma Inline (Set_Has_Priority_Pragma);
- pragma Inline (Set_Has_Private_View);
- pragma Inline (Set_Has_Storage_Size_Pragma);
- pragma Inline (Set_Has_Task_Info_Pragma);
- pragma Inline (Set_Has_Task_Name_Pragma);
- pragma Inline (Set_Has_Wide_Character);
- pragma Inline (Set_Hidden_By_Use_Clause);
- pragma Inline (Set_High_Bound);
- pragma Inline (Set_Identifier);
- pragma Inline (Set_Implicit_With);
- pragma Inline (Set_Includes_Infinities);
- pragma Inline (Set_In_Present);
- pragma Inline (Set_Instance_Spec);
- pragma Inline (Set_Intval);
- pragma Inline (Set_Is_Asynchronous_Call_Block);
- pragma Inline (Set_Is_Component_Left_Opnd);
- pragma Inline (Set_Is_Component_Right_Opnd);
- pragma Inline (Set_Is_Controlling_Actual);
- pragma Inline (Set_Is_Machine_Number);
- pragma Inline (Set_Is_Overloaded);
- pragma Inline (Set_Is_Power_Of_2_For_Shift);
- pragma Inline (Set_Is_Protected_Subprogram_Body);
- 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_Itype);
- pragma Inline (Set_Kill_Range_Check);
- pragma Inline (Set_Last_Bit);
- pragma Inline (Set_Last_Name);
- pragma Inline (Set_Library_Unit);
- pragma Inline (Set_Label_Construct);
- pragma Inline (Set_Left_Opnd);
- pragma Inline (Set_Limited_Present);
- pragma Inline (Set_Literals);
- 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_Not_Freeze);
- pragma Inline (Set_Name);
- pragma Inline (Set_Names);
- pragma Inline (Set_Next_Entity);
- pragma Inline (Set_Next_Named_Actual);
- pragma Inline (Set_Next_Use_Clause);
- pragma Inline (Set_No_Ctrl_Actions);
- pragma Inline (Set_No_Entities_Ref_In_Spec);
- pragma Inline (Set_No_Initialization);
- pragma Inline (Set_Null_Present);
- pragma Inline (Set_Null_Record_Present);
- pragma Inline (Set_Object_Definition);
- pragma Inline (Set_OK_For_Stream);
- pragma Inline (Set_Original_Discriminant);
- pragma Inline (Set_Others_Discrete_Choices);
- pragma Inline (Set_Out_Present);
- pragma Inline (Set_Parameter_Associations);
- pragma Inline (Set_Parameter_Specifications);
- pragma Inline (Set_Parameter_List_Truncated);
- pragma Inline (Set_Parameter_Type);
- pragma Inline (Set_Parent_Spec);
- pragma Inline (Set_Position);
- pragma Inline (Set_Pragma_Argument_Associations);
- pragma Inline (Set_Pragmas_After);
- pragma Inline (Set_Pragmas_Before);
- pragma Inline (Set_Prefix);
- 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_Realval);
- pragma Inline (Set_Real_Range_Specification);
- pragma Inline (Set_Record_Extension_Part);
- pragma Inline (Set_Redundant_Use);
- pragma Inline (Set_Return_Type);
- pragma Inline (Set_Reverse_Present);
- pragma Inline (Set_Right_Opnd);
- pragma Inline (Set_Rounded_Result);
- 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_Specification);
- pragma Inline (Set_Statements);
- pragma Inline (Set_Static_Processing_OK);
- pragma Inline (Set_Storage_Pool);
- pragma Inline (Set_Strval);
- pragma Inline (Set_Subtype_Indication);
- pragma Inline (Set_Subtype_Mark);
- pragma Inline (Set_Subtype_Marks);
- pragma Inline (Set_Tagged_Present);
- pragma Inline (Set_Target_Type);
- pragma Inline (Set_Task_Body_Procedure);
- pragma Inline (Set_Task_Definition);
- pragma Inline (Set_Then_Actions);
- pragma Inline (Set_Then_Statements);
- pragma Inline (Set_Triggering_Alternative);
- pragma Inline (Set_Triggering_Statement);
- pragma Inline (Set_Treat_Fixed_As_Integer);
- pragma Inline (Set_TSS_Elist);
- pragma Inline (Set_Type_Definition);
- pragma Inline (Set_Unit);
- pragma Inline (Set_Unknown_Discriminants_Present);
- pragma Inline (Set_Unreferenced_In_Spec);
- pragma Inline (Set_Variant_Part);
- pragma Inline (Set_Variants);
- pragma Inline (Set_Visible_Declarations);
- pragma Inline (Set_Was_Originally_Stub);
- pragma Inline (Set_Zero_Cost_Handling);
-
-end Sinfo;
projects / msp430-gcc.git / blobdiff