ocarina-backends-ada_tree-nutils.adb 94.6 KB
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------------------------------------------------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--     O C A R I N A . B A C K E N D S . A D A _ T R E E . N U T I L S      --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
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--    Copyright (C) 2006-2009 Telecom ParisTech, 2010-2020 ESA & ISAE.      --
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--                                                                          --
-- Ocarina  is free software; you can redistribute it and/or modify under   --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion. Ocarina is distributed in the hope that it will be useful, but     --
-- WITHOUT ANY WARRANTY; without even the implied warranty of               --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                     --
--                                                                          --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception,   --
-- version 3.1, as published by the Free Software Foundation.               --
--                                                                          --
-- You should have received a copy of the GNU General Public License and    --
-- a copy of the GCC Runtime Library Exception along with this program;     --
-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
-- <http://www.gnu.org/licenses/>.                                          --
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--                                                                          --
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--                 Ocarina is maintained by the TASTE project               --
--                      (taste-users@lists.tuxfamily.org)                   --
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--                                                                          --
------------------------------------------------------------------------------

with GNAT.Table;
with GNAT.Case_Util;

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with Charset;        use Charset;
with Locations;      use Locations;
with Ocarina.Namet;  use Ocarina.Namet;
with Ocarina.Output; use Ocarina.Output;
with Ocarina.Types;  use Ocarina.Types;
with Utils;          use Utils;
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with Ocarina.Backends.Ada_Values; use Ocarina.Backends.Ada_Values;
with Ocarina.Backends.Utils;      use Ocarina.Backends.Utils;
with Ocarina.Backends.Messages;   use Ocarina.Backends.Messages;

with Ocarina.ME_AADL.AADL_Tree.Nodes;

package body Ocarina.Backends.Ada_Tree.Nutils is

   package ADN renames Ocarina.Backends.Ada_Tree.Nodes;
   package AAN renames Ocarina.ME_AADL.AADL_Tree.Nodes;

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   Var_Suffix  : constant String := "_Ü";
   Initialized : Boolean         := False;
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   Keyword_Suffix : constant String := "%Ada";
   --  Used to mark Ada keywords and avoid collision with other
   --  languages

   type Entity_Stack_Entry is record
      Current_Package : Node_Id;
      Current_Entity  : Node_Id;
   end record;

   No_Depth : constant Int := -1;
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   package Entity_Stack is new GNAT.Table
     (Entity_Stack_Entry,
      Int,
      No_Depth + 1,
      10,
      10);
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   use Entity_Stack;

   function Create_Unique_Identifier
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     (Name   : Name_Id;
      Suffix : String := "") return Name_Id;
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   --  This function returns a unique identifier for Name with a UT_ prefix,
   --  followed by the name of the node, name of the package, Name
   --  and Suffix if exists.

   function Get_Style_State return Value_Id;
   --  This function returns a string literal which is the value given
   --  to the pragma style_checks. The 'Off' value is does not ignore
   --  line length.

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   procedure New_Operator (O : Operator_Type; I : String := "");
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   ----------------------
   -- Add_With_Package --
   ----------------------

   procedure Add_With_Package
     (E            : Node_Id;
      Used         : Boolean := False;
      Warnings_Off : Boolean := False;
      Elaborated   : Boolean := False)
   is

      function To_Library_Unit (E : Node_Id) return Node_Id;
      --  Return the library unit which E belongs to in order to with
      --  it. As a special rule, package Standard returns No_Node.

      ---------------------
      -- To_Library_Unit --
      ---------------------

      function To_Library_Unit (E : Node_Id) return Node_Id is
         U : Node_Id;

      begin
         pragma Assert (Kind (E) = K_Designator);
         U := Corresponding_Node (Defining_Identifier (E));

         --  This node is not properly built as the corresponding node
         --  is not set.

         if No (U) then
            if Output_Tree_Warnings then
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               Write_Str ("WARNING: node ");
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               Write_Name (Name (Defining_Identifier (E)));
               Write_Line (" has a null corresponding node");
            end if;
            return E;
         end if;

         if ADN.Kind (U) = K_Package_Declaration then
            U := Package_Specification (U);
         end if;

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         pragma Assert
           (Kind (U) = K_Package_Specification
            or else Kind (U) = K_Package_Instantiation);
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         --  This is a subunit and we do not need to add a with for
         --  this unit but for one of its parents.  If the kind of the
         --  parent unit name is a K_Package_Instantiation, we
         --  consider it as a subunit.

         if Kind (U) = K_Package_Instantiation
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           or else Is_Subunit_Package (U)
         then
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            U := Parent_Unit_Name (E);

            --  This is a special case to handle package Standard

            if No (U) then
               return No_Node;
            end if;

            return To_Library_Unit (U);
         end if;

         return E;
      end To_Library_Unit;

      P             : constant Node_Id := To_Library_Unit (E);
      W             : Node_Id;
      N             : Name_Id;
      I             : Node_Id;
      Existing_With : Node_Id;

   begin
      if No (P) then
         return;
      end if;

      --  Build a string "<current_entity>%[s,b] <withed_entity>" that
      --  is the current entity name, a character 's' (resp 'b') to
      --  indicate whether we consider the spec (resp. body) of the
      --  current entity and the withed entity name.

      --  To avoid that a package "with"es itself

      if Kind (Current_Package) /= K_Subprogram_Implementation
        and then Kind (Current_Package) /= K_Subprogram_Specification
      then
         --  and then Corresponding_Node (Defining_Identifier (P))
         --  = Package_Declaration (Current_Package)

         if To_Lower (Fully_Qualified_Name (P)) =
           To_Lower
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             (Fully_Qualified_Name
                (Defining_Identifier (Package_Declaration (Current_Package))))
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         then
            return;
         end if;
      end if;

      --  Routine that check wether the package P has already been
      --  added to the withed packages of the current package. When we
      --  add a 'with' clause to a package specification, we check
      --  only if this clause has been added to the current
      --  spec. However, when we add a 'with' clause to a package
      --  body, we check that the clause has been added in both the
      --  spec and the body.

      --  IMPORTANT: Provided that all specs are generated before all
      --  bodies, this behaviour is automatically applied. We just
      --  need to encode the package name *without* precising whether
      --  it is a spec or a body

      --  Encoding the withed package and the current entity

      N := Fully_Qualified_Name (P);

      if Kind (Current_Package) /= K_Subprogram_Implementation
        and then Kind (Current_Package) /= K_Subprogram_Specification
      then
         I := Defining_Identifier (Package_Declaration (Current_Package));

         Get_Name_String (Fully_Qualified_Name (I));

         --  In both the PolyORB-HI and PolyORB-QoS generators some
         --  packages that are generated for different nodes have
         --  exactly the same name. We must encode the node name to
         --  differenciate them. This happens only when we deal with a
         --  package generated for a root node

         if Present
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             (Main_Subprogram
                (Distributed_Application_Unit
                   (Package_Declaration (Current_Package))))
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         then
            Add_Char_To_Name_Buffer (' ');
            Get_Name_String_And_Append
              (ADN.Name
                 (Defining_Identifier
                    (Main_Subprogram
                       (Distributed_Application_Unit
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                          (Package_Declaration (Current_Package))))));
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         end if;

      elsif Kind (Current_Package) /= K_Subprogram_Specification then
         I := Defining_Identifier (Specification (Current_Package));
         Get_Name_String (Fully_Qualified_Name (I));
      else
         I := Defining_Identifier (Current_Package);
         Get_Name_String (Fully_Qualified_Name (I));
      end if;

      Add_Char_To_Name_Buffer (' ');
      Get_Name_String_And_Append (N);
      N := To_Lower (Name_Find);

      --  Get the info associated to the obtained name in the hash
      --  table and check whether it is already set to a value
      --  different from 0 (No_Node) which means that the withed
      --  entity is already in the withed package list. In this case
      --  try to enrich the exisiting with clause with eventual 'use',
      --  'elaborate' or warning disabling clauses.

      Existing_With := Node_Id (Get_Name_Table_Info (N));

      if Present (Existing_With) then
         Set_Used (Existing_With, ADN.Used (Existing_With) or else Used);
         Set_Warnings_Off
           (Existing_With,
            ADN.Warnings_Off (Existing_With) or else Warnings_Off);
         Set_Elaborated
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           (Existing_With,
            ADN.Elaborated (Existing_With) or else Elaborated);
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         return;
      end if;

      --  Debug message (if wanted by the user)

      if Output_Unit_Withing then
         Write_Name (N);
         Write_Eol;
      end if;

      --  Add entity to the withed packages list of the current
      --  package

      W := Make_Withed_Package (P, Used, Warnings_Off, Elaborated);

      --  Mark the 'with' clause as being added to the current package

      Set_Name_Table_Info (N, Int (W));

      Append_Node_To_List (W, Withed_Packages (Current_Package));
   end Add_With_Package;

   ------------------------------------
   -- Append_Node_To_Current_Package --
   ------------------------------------

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   procedure Append_Node_To_Current_Package (N : Node_Id) is
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   begin
      case Kind (Current_Package) is
         when K_Package_Specification =>
            Append_Node_To_List (N, ADN.Visible_Part (Current_Package));
         when K_Package_Implementation =>
            Append_Node_To_List (N, ADN.Statements (Current_Package));
         when others =>
            raise Program_Error;
      end case;
   end Append_Node_To_Current_Package;

   -------------------------
   -- Append_Node_To_List --
   -------------------------

   procedure Append_Node_To_List (E : Node_Id; L : List_Id) is
      Last : Node_Id;

   begin
      Last := Last_Node (L);
      if No (Last) then
         Set_First_Node (L, E);
      else
         Set_Next_Node (Last, E);
      end if;
      Last := E;
      while Present (Last) loop
         Set_Last_Node (L, Last);
         Last := Next_Node (Last);
      end loop;
   end Append_Node_To_List;

   -----------------------
   -- Insert_After_Node --
   -----------------------

   procedure Insert_After_Node (E : Node_Id; N : Node_Id) is
      Next : constant Node_Id := Next_Node (N);
   begin
      Set_Next_Node (N, E);
      Set_Next_Node (E, Next);
   end Insert_After_Node;

   ------------------------
   -- Insert_Before_Node --
   ------------------------

   procedure Insert_Before_Node (E : Node_Id; N : Node_Id; L : List_Id) is
      Entity : Node_Id;
   begin
      Entity := First_Node (L);
      if Entity = N then
         Set_Next_Node (E, Entity);
         Set_First_Node (L, E);
      else
         while Present (Entity) loop
            exit when Next_Node (Entity) = N;
            Entity := Next_Node (Entity);
         end loop;

         Insert_After_Node (E, Entity);
      end if;
   end Insert_Before_Node;

   ---------------------
   -- Copy_Designator --
   ---------------------

   function Copy_Designator
     (Designator : Node_Id;
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      Withed     : Boolean := True) return Node_Id
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   is
      D : Node_Id;
      P : Node_Id := Parent_Unit_Name (Designator);

   begin
      D := Copy_Node (Designator);
      if Kind (Designator) = K_Designator
        or else Kind (Designator) = K_Defining_Identifier
      then
         P := Parent_Unit_Name (Designator);
      elsif Kind (Designator) = K_Attribute_Designator then
         P := Parent_Unit_Name (Prefix (Designator));
      end if;

      if Present (P) then
         P := Copy_Designator (P, False);
         if Withed then
            Add_With_Package (P);
         end if;
      end if;
      return D;
   end Copy_Designator;

   ---------------
   -- Copy_Node --
   ---------------

   function Copy_Node (N : Node_Id) return Node_Id is
      C : Node_Id;

   begin
      case Kind (N) is
         when K_Designator =>
            C := New_Node (K_Designator);
            Set_Defining_Identifier (C, Defining_Identifier (N));
            Set_Frontend_Node (C, Frontend_Node (N));
            Set_Homogeneous_Parent_Unit_Name (C, Parent_Unit_Name (N));

         when K_Defining_Identifier =>
            C := New_Node (K_Defining_Identifier);
            Set_Name (C, Name (N));
            Set_Homogeneous_Parent_Unit_Name (C, Parent_Unit_Name (N));
            Set_Corresponding_Node (C, Corresponding_Node (N));

         when K_Attribute_Designator =>
            C := New_Node (K_Attribute_Designator);
            Set_Name (C, Name (N));
            Set_Prefix (C, Copy_Node (Prefix (N)));

         when others =>
            raise Program_Error;
      end case;
      return C;
   end Copy_Node;

   ------------------------------------------
   -- Create_Subtype_From_Range_Constraint --
   ------------------------------------------

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   function Create_Subtype_From_Range_Constraint
     (R : Node_Id) return Node_Id
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   is
      N         : Node_Id := No_Node;
      C_First   : Node_Id := No_Node;
      C_Last    : Node_Id := No_Node;
      C_Index   : Node_Id := No_Node;
      Ident     : Node_Id := No_Node;
      Sub_Ident : Node_Id := No_Node;
   begin
      pragma Assert (Kind (R) = K_Range_Constraint);

      --  Stock identifier of the node in the variable Ident.
      --  If the node is not a literal, only its identifier is necessary.
      --  Variables C_first, C_Last and C_Index keep informations to
      --  construct the type replacing the range constraint.
      --  C_First and C_Last stock identifier of the node except for
      --  a literal node.

      if Present (Nodes.First (R)) then
         case Kind (Nodes.First (R)) is
            when K_Attribute_Designator =>
               C_First := Defining_Identifier (Nodes.Prefix (Nodes.First (R)));
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               Ident   := C_First;
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            when K_Designator =>
               C_First := Defining_Identifier (Nodes.First (R));
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               Ident   := C_First;
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            when K_Literal =>
               C_First := Nodes.First (R);
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               Ident   :=
                 Make_Defining_Identifier
                   (Get_String_Name
                      (Ada_Values.Image (Nodes.Value (C_First))));
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            when K_Defining_Identifier =>
               C_First := Nodes.First (R);
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               Ident   := C_First;
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            when others =>
               null;
         end case;
      end if;

      if Present (Nodes.Last (R)) then
         case Kind (Nodes.Last (R)) is
            when K_Attribute_Designator =>
               C_Last := Defining_Identifier (Nodes.Prefix (Nodes.Last (R)));

            when K_Designator =>
               C_Last := Defining_Identifier (Nodes.Last (R));

            when K_Literal =>
               C_Last :=
                 Make_Defining_Identifier
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                   (Get_String_Name
                      (Ada_Values.Image (Nodes.Value (Nodes.Last (R)))));
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            when K_Defining_Identifier =>
               C_Last := Nodes.Last (R);

            when others =>
               null;
         end case;

         --  Construct identifier of the type : First_range_Last_Range
         Get_Name_String (Name (Ident));
         Add_Char_To_Name_Buffer ('_');
         Get_Name_String_And_Append (Name (C_Last));
         Sub_Ident := Make_Defining_Identifier (Name_Find);
      end if;

      if Present (Index_Type (R)) then
         case Kind (Index_Type (R)) is
            when K_Attribute_Designator =>
               Ident := Defining_Identifier (Nodes.Prefix (Index_Type (R)));

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               if C_First = No_Node and then C_Last = No_Node then
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                  --  Consider only Range attribute. Can be problematic
                  --  with a size attribute for instance.
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                  C_Index :=
                    Make_Range_Constraint
                      (Make_Attribute_Designator (Ident, A_First),
                       Make_Attribute_Designator (Ident, A_Last),
                       Ident);

                  Sub_Ident :=
                    Make_Defining_Identifier (Name (Index_Type (R)));
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               end if;
            when K_Designator =>
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               Ident   := Defining_Identifier (Index_Type (R));
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               C_Index := Index_Type (R);

            when others =>
               null;
         end case;
      end if;

      --  Case of unconstraint array (range <>)
      --  or a range attribute (Index'Range).
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      if (C_First = No_Node)
        and then (C_Last = No_Node)
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        and then (C_Index /= No_Node)
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        and then Ident /= No_Node
      then
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         --  if C_Index is an unconstraint array (range <>)
         --  return a range constraint, else return created type.
         if Kind (C_Index) = K_Designator then
            N := Make_Range_Constraint (No_Node, No_Node, Ident);
         else
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            Sub_Ident :=
              Make_Defining_Identifier
                (Create_Unique_Identifier
                   (Name (Ident),
                    Get_Name_String (Name (Sub_Ident))));
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            if Get_Name_Table_Info (Name (Sub_Ident)) = Int (No_Node) then
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               N :=
                 Make_Full_Type_Declaration
                   (Defining_Identifier => Sub_Ident,
                    Type_Definition     => C_Index,
                    Is_Subtype          => True);
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               Set_Name_Table_Info (Name (Sub_Ident), Int (Sub_Ident));
               Append_Node_To_Current_Package (N);
            else
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               N :=
                 Corresponding_Node
                   (Node_Id (Get_Name_Table_Info (Name (Sub_Ident))));
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            end if;
         end if;

      --  Case range constraint is of the form :
      --  My_Type range Range_First .. Range_Last
      --  create a type : subtype UT_Type is My_Type Range_First ..Range_Last
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      elsif (C_First /= No_Node)
        and then (C_Last /= No_Node)
        and then (C_Index /= No_Node)
      then
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         Sub_Ident :=
           Make_Defining_Identifier
             (Create_Unique_Identifier (Name (Sub_Ident)));
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         N :=
           Make_Full_Type_Declaration
             (Defining_Identifier => Sub_Ident,
              Type_Definition     =>
                Make_Range_Constraint (C_First, C_Last, Ident),
              Is_Subtype => True);
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         if Get_Name_Table_Info (Name (Sub_Ident)) = Int (No_Node) then
            Set_Name_Table_Info (Name (Sub_Ident), Int (Sub_Ident));
            Append_Node_To_Current_Package (N);
         else
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            N :=
              Corresponding_Node
                (Node_Id (Get_Name_Table_Info (Name (Sub_Ident))));
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         end if;

      --  Case range constraint is of the form : 1 .. Max_Size,
      --  create a type : type UT_Type is Integer range 1 .. Max_Size
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      elsif (C_First /= No_Node)
        and then (C_Last /= No_Node)
        and then (C_Index = No_Node)
      then
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         Sub_Ident :=
           Make_Defining_Identifier
             (Create_Unique_Identifier (Name (Sub_Ident)));
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         N :=
           Make_Full_Type_Declaration
             (Defining_Identifier => Sub_Ident,
              Type_Definition     =>
                Make_Range_Constraint
                  (C_First,
                   C_Last,
                   Make_Defining_Identifier (TN (T_Integer))),
              Is_Subtype => True);
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         if Get_Name_Table_Info (Name (Sub_Ident)) = Int (No_Node) then
            Set_Name_Table_Info (Name (Sub_Ident), Int (Sub_Ident));
            Append_Node_To_Current_Package (N);
         else
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            N :=
              Corresponding_Node
                (Node_Id (Get_Name_Table_Info (Name (Sub_Ident))));
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         end if;
      end if;

      return N;
   end Create_Subtype_From_Range_Constraint;

   --------------------
   -- Current_Entity --
   --------------------

   function Current_Entity return Node_Id is
   begin
      if Last = No_Depth then
         return No_Node;
      else
         return Table (Last).Current_Entity;
      end if;
   end Current_Entity;

   ---------------------
   -- Current_Package --
   ---------------------

   function Current_Package return Node_Id is
   begin
      if Last = No_Depth then
         return No_Node;
      else
         return Table (Last).Current_Package;
      end if;
   end Current_Package;

   ---------------------------------------
   -- Defining_Identifier_To_Designator --
   ---------------------------------------

   function Defining_Identifier_To_Designator
     (N                       : Node_Id;
      Copy                    : Boolean := False;
      Keep_Parent             : Boolean := True;
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      Keep_Corresponding_Node : Boolean := True) return Node_Id
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   is
      P      : Node_Id;
      Def_Id : Node_Id := N;
   begin
      pragma Assert (ADN.Kind (N) = K_Defining_Identifier);

      if Copy then
         Def_Id := Copy_Node (N);
      end if;

      if not Keep_Parent then
         Def_Id := Make_Defining_Identifier (ADN.Name (N));
      end if;

      if Keep_Corresponding_Node then
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         Set_Corresponding_Node (Def_Id, Corresponding_Node (N));
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      end if;

      P := New_Node (K_Designator);
      Set_Defining_Identifier (P, Def_Id);

      if Keep_Parent then
         Set_Homogeneous_Parent_Unit_Name (P, Parent_Unit_Name (N));
      end if;

      return P;
   end Defining_Identifier_To_Designator;

   ---------------------
   -- Message_Comment --
   ---------------------

   function Message_Comment (M : Name_Id) return Node_Id is
      C : Node_Id;
   begin
      C := Make_Ada_Comment (M);
      return C;
   end Message_Comment;

   ---------------------
   -- Message_Comment --
   ---------------------

   function Message_Comment (M : String) return Node_Id is
      C : Node_Id;
   begin
      Set_Str_To_Name_Buffer (M);
      C := Make_Ada_Comment (Name_Find);
      return C;
   end Message_Comment;

   --------------------------
   -- Fully_Qualified_Name --
   --------------------------

   function Fully_Qualified_Name (N : Node_Id) return Name_Id is
      Parent_Node : Node_Id := No_Node;
      Parent_Name : Name_Id := No_Name;

   begin
      case Kind (N) is
         when K_Designator =>
            Parent_Node := Parent_Unit_Name (N);

            if not Present (Parent_Node) then
               Parent_Node := Parent_Unit_Name (Defining_Identifier (N));
            end if;

            if Present (Parent_Node) then
               Parent_Name := Fully_Qualified_Name (Parent_Node);
            end if;

            Name_Len := 0;
            if Present (Parent_Node) then
               Get_Name_String (Parent_Name);
               Add_Char_To_Name_Buffer ('.');
            end if;
            Get_Name_String_And_Append (Name (Defining_Identifier (N)));
            return Name_Find;

         when K_Defining_Identifier =>
            Parent_Node := Parent_Unit_Name (N);
            if Present (Parent_Node) then
               Parent_Name := Fully_Qualified_Name (Parent_Node);
            end if;

            Name_Len := 0;
            if Present (Parent_Node) then
               Get_Name_String (Parent_Name);
               Add_Char_To_Name_Buffer ('.');
            end if;
            Get_Name_String_And_Append (Name (N));
            return Name_Find;

         when K_Attribute_Designator =>
            Get_Name_String (Fully_Qualified_Name (Prefix (N)));
            Add_Char_To_Name_Buffer (''');
            Get_Name_String_And_Append (Name (N));
            return Name_Find;

         when others =>
            raise Program_Error;
      end case;
   end Fully_Qualified_Name;

   ---------------------
   -- Get_Style_State --
   ---------------------

   function Get_Style_State return Value_Id is

      --  The maximum line length allowed by GNAT is 32766

      Max_Line_Length : constant Int := 32766;
      Result          : Value_Id;
   begin
      Set_Str_To_Name_Buffer ("NM");
      Add_Nat_To_Name_Buffer (Max_Line_Length);
      Result := New_String_Value (Name_Find);
      return Result;
   end Get_Style_State;

   -----------
   -- Image --
   -----------

   function Image (T : Token_Type) return String is
      S : String := Token_Type'Image (T);
   begin
      To_Lower (S);
      return S (5 .. S'Last);
   end Image;

   -----------
   -- Image --
   -----------

   function Image (O : Operator_Type) return String is
      S : String := Operator_Type'Image (O);
   begin
      To_Lower (S);
      for I in S'First .. S'Last loop
         if S (I) = '_' then
            S (I) := ' ';
         end if;
      end loop;
      return S (4 .. S'Last);
   end Image;

   ----------------
   -- Initialize --
   ----------------

   procedure Initialize is
   begin
      --  Initialize Nutils only once

      if Initialized then
         return;
      end if;

      Initialized := True;

      --  Keywords.
      for I in Keyword_Type loop
         New_Token (I);
      end loop;

      --  Graphic Characters
      New_Token (Tok_Double_Asterisk, "**");
      New_Token (Tok_Ampersand, "&");
      New_Token (Tok_Minus, "-");
      New_Token (Tok_Plus, "+");
      New_Token (Tok_Asterisk, "*");
      New_Token (Tok_Slash, "/");
      New_Token (Tok_Dot, ".");
      New_Token (Tok_Apostrophe, "'");
      New_Token (Tok_Left_Paren, "(");
      New_Token (Tok_Right_Paren, ")");
      New_Token (Tok_Comma, ",");
      New_Token (Tok_Less, "<");
      New_Token (Tok_Equal, "=");
      New_Token (Tok_Greater, ">");
      New_Token (Tok_Not_Equal, "/=");
      New_Token (Tok_Greater_Equal, ">=");
      New_Token (Tok_Less_Equal, "<=");
      New_Token (Tok_Box, "<>");
      New_Token (Tok_Colon_Equal, ":=");
      New_Token (Tok_Colon, ":");
      New_Token (Tok_Greater_Greater, ">>");
      New_Token (Tok_Less_Less, "<<");
      New_Token (Tok_Semicolon, ";");
      New_Token (Tok_Arrow, "=>");
      New_Token (Tok_Vertical_Bar, "|");
      New_Token (Tok_Dot_Dot, "..");
      New_Token (Tok_Minus_Minus, "--");

      for O in Op_And .. Op_Or_Else loop
         New_Operator (O);
      end loop;
      New_Operator (Op_And_Symbol, "&");
      New_Operator (Op_Double_Asterisk, "**");
      New_Operator (Op_Minus, "-");
      New_Operator (Op_Plus, "+");
      New_Operator (Op_Asterisk, "*");
      New_Operator (Op_Slash, "/");
      New_Operator (Op_Less, "<");
      New_Operator (Op_Equal, "=");
      New_Operator (Op_Greater, ">");
      New_Operator (Op_Not_Equal, "/=");
      New_Operator (Op_Greater_Equal, ">=");
      New_Operator (Op_Less_Equal, "<=");
      New_Operator (Op_Box, "<>");
      New_Operator (Op_Colon_Equal, ":=");
      New_Operator (Op_Colon, "--");
      New_Operator (Op_Greater_Greater, ">>");
      New_Operator (Op_Less_Less, "<<");
      New_Operator (Op_Semicolon, ";");
      New_Operator (Op_Arrow, "=>");
      New_Operator (Op_Vertical_Bar, "|");

      for A in Attribute_Id loop
         Set_Str_To_Name_Buffer (Attribute_Id'Image (A));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         AN (A) := Name_Find;
      end loop;

      for C in Component_Id loop
         Set_Str_To_Name_Buffer (Component_Id'Image (C));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         CN (C) := Name_Find;
      end loop;

      for P in Parameter_Id loop
         Set_Str_To_Name_Buffer (Parameter_Id'Image (P));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         PN (P) := Name_Find;
      end loop;

      for S in Subprogram_Id loop
         Set_Str_To_Name_Buffer (Subprogram_Id'Image (S));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         SN (S) := Name_Find;
      end loop;

      for T in Type_Id loop
         Set_Str_To_Name_Buffer (Type_Id'Image (T));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         TN (T) := Name_Find;
      end loop;

      for V in Variable_Id loop
         Set_Str_To_Name_Buffer (Variable_Id'Image (V));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         Add_Str_To_Name_Buffer (Var_Suffix);
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         VN (V) := Name_Find;
      end loop;

      for G in Pragma_Id loop
         Set_Str_To_Name_Buffer (Pragma_Id'Image (G));
         Set_Str_To_Name_Buffer (Name_Buffer (8 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         GN (G) := Name_Find;
      end loop;

      for E in Error_Id loop
         Set_Str_To_Name_Buffer (Error_Id'Image (E));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         EN (E) := Name_Find;
      end loop;
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      for A in Aspect_Id loop
         Set_Str_To_Name_Buffer (Aspect_Id'Image (A));
         Set_Str_To_Name_Buffer (Name_Buffer (3 .. Name_Len));
         GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
         ASN (A) := Name_Find;
      end loop;
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   end Initialize;

   -----------
   -- Reset --
   -----------

   procedure Reset is
   begin
      Entity_Stack.Init;

      Initialized := False;
   end Reset;

   --------------
   -- Is_Empty --
   --------------

   function Is_Empty (L : List_Id) return Boolean is
   begin
      return L = No_List or else No (First_Node (L));
   end Is_Empty;

   ------------
   -- Length --
   ------------

   function Length (L : List_Id) return Natural is
      N : Node_Id;
      C : Natural := 0;
   begin
      if not Is_Empty (L) then
         N := First_Node (L);

         while Present (N) loop
            C := C + 1;
            N := Next_Node (N);
         end loop;
      end if;

      return C;
   end Length;

   ---------------------------------
   -- Make_Access_Type_Definition --
   ---------------------------------

   function Make_Access_Type_Definition
     (Subtype_Indication : Node_Id;
      Is_All             : Boolean := False;
      Is_Constant        : Boolean := False;
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      Is_Not_Null        : Boolean := False) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Access_Type_Definition);
      Set_Subtype_Indication (N, Subtype_Indication);

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      Set_Is_All (N, Is_All);
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      Set_Is_Constant (N, Is_Constant);
      Set_Is_Not_Null (N, Is_Not_Null);
      return N;
   end Make_Access_Type_Definition;

   ----------------------
   -- Make_Ada_Comment --
   ----------------------

   function Make_Ada_Comment
     (N                 : Name_Id;
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      Has_Header_Spaces : Boolean := True) return Node_Id
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   is
      C : Node_Id;
   begin
      C := New_Node (K_Ada_Comment);
      Set_Defining_Identifier (C, New_Node (K_Defining_Identifier));
      Set_Name (Defining_Identifier (C), N);
      Set_Has_Header_Spaces (C, Has_Header_Spaces);
      return C;
   end Make_Ada_Comment;

   --------------------------
   -- Make_Array_Aggregate --
   --------------------------

   function Make_Array_Aggregate (Elements : List_Id) return Node_Id is
      pragma Assert (not Is_Empty (Elements));
      N : Node_Id;
   begin
      N := New_Node (K_Array_Aggregate);
      Set_Elements (N, Elements);
      return N;
   end Make_Array_Aggregate;

   ------------------------------
   -- Create_Unique_Identifier --
   ------------------------------

   function Create_Unique_Identifier
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     (Name   : Name_Id;
      Suffix : String := "") return Name_Id
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   is
      Name_Returned : Name_Id;
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      Pack          : constant Name_Id :=
        Nodes.Name
          (Defining_Identifier (Package_Declaration (Current_Package)));
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   begin
      Set_Str_To_Name_Buffer ("");
      Get_Name_String (Pack);
      Add_Char_To_Name_Buffer ('_');
      Get_Name_String_And_Append
        (ADN.Name
           (Defining_Identifier
              (Main_Subprogram
                 (Distributed_Application_Unit
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                    (Package_Declaration (Current_Package))))));
      GNAT.Case_Util.To_Mixed (Name_Buffer (1 .. Name_Len));
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      Add_Char_To_Name_Buffer ('_');
      Get_Name_String_And_Append (Name);
      if Suffix /= "" then
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         Name_Returned :=
           Add_Prefix_To_Name
             ("UT_",
              Add_Suffix_To_Name ("_" & Suffix, Name_Find));
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      else
         Name_Returned := Add_Prefix_To_Name ("UT_", Name_Find);
      end if;
      return Name_Returned;
   end Create_Unique_Identifier;

   --------------------------------
   -- Make_Array_Type_Definition --
   --------------------------------

   function Make_Array_Type_Definition
     (Range_Constraints    : List_Id;
      Component_Definition : Node_Id;
1069
      Aliased_Present      : Boolean := False) return Node_Id
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   is
      N : Node_Id;

   begin
      N := New_Node (ADN.K_Array_Type_Definition);
      Set_Range_Constraints (N, Range_Constraints);
      Set_Component_Definition (N, Component_Definition);
      Set_Aliased_Present (N, Aliased_Present);
      return N;
   end Make_Array_Type_Definition;

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   -------------------------------
   -- Make_Aspect_Specification --
   -------------------------------

   function Make_Aspect_Specification (Aspects : List_Id) return Node_Id is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Aspect_Specification);
      Set_Aspect (N, Aspects);
      return N;
   end Make_Aspect_Specification;

   --------------
   -- Make_Pre --
   --------------

   function Make_Pre (Subprogram_Call : Node_Id) return Node_Id is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Pre_Definition);
      Set_Subprogram_Call (N, Subprogram_Call);
      return N;
   end Make_Pre;

   -------------------------------
   -- Make_Global_Specification --
   -------------------------------

   function Make_Global_Specification
     (Moded_Global_List : List_Id)
     return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Global_Specification);
      Set_Moded_Global_List (N, Moded_Global_List);
      return N;
   end Make_Global_Specification;

   function Make_Moded_Global_List
   (Mode : Mode_Id; Identifier : Node_Id) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Moded_Global_List);
      Set_Mode_Selector (N, Mode);
      Set_Defining_Identifier (N, Identifier);
      return N;
   end Make_Moded_Global_List;

   -----------------
   -- Make_Aspect --
   -----------------

   function Make_Aspect
     (Aspect_Mark : Name_Id;
      Aspect_Definition : Node_Id := No_Node) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Aspect);
      Set_Aspect_Mark (N, Aspect_Mark);
      Set_Aspect_Definition (N, Aspect_Definition);
      return N;
   end Make_Aspect;

   ------------------------------
   -- Make_Initialization_Spec --
   ------------------------------

   function Make_Initialization_Spec
     (Initialization_List : List_Id) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Initialization_Spec);
      Set_Initialization_List (N, Initialization_List);
      return N;
   end Make_Initialization_Spec;

   ------------------------------
   -- Make_Abstract_State_List --
   ------------------------------

   function Make_Abstract_State_List
     (State_Name_With_Option : List_Id) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_Abstract_State_List);
      Set_State_Name_With_Option (N, State_Name_With_Option);
      return N;
   end Make_Abstract_State_List;

   ---------------------------------
   -- Make_State_Name_With_Option --
   ---------------------------------

   function Make_State_Name_With_Option
     (Defining_Identifier : Node_Id;
      Synchronous : Boolean;
      External : Boolean) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (ADN.K_State_Name_With_Option);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Synchronous (N, Synchronous);
      Set_External (N, External);
      return N;
   end Make_State_Name_With_Option;

   --------------------------
   -- Make_Refinement_List --
   --------------------------

   function Make_Refinement_List
     (Refinement_Clause : List_Id) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (Adn.K_Refinement_List);
      Set_Refinement_Clause (N, Refinement_Clause);
      return N;
   end Make_Refinement_List;

   ----------------------------
   -- Make_Refinement_Clause --
   ----------------------------

   function Make_Refinement_Clause
     (State_Name : Node_Id;
      Constituent : List_Id) return Node_Id
   is
      N : Node_Id;
   begin
      N := New_Node (Adn.K_Refinement_Clause);
      Set_State_Name (N, State_Name);
      Set_Constituent (N, Constituent);
      return N;
   end Make_Refinement_Clause;

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   -------------------------------
   -- Make_Assignment_Statement --
   -------------------------------

   function Make_Assignment_Statement
     (Variable_Identifier : Node_Id;
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      Expression          : Node_Id) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Assignment_Statement);
      Set_Defining_Identifier (N, Variable_Identifier);
      Set_Expression (N, Expression);
      return N;
   end Make_Assignment_Statement;

   --------------------------------------
   -- Make_Attribute_Definition_Clause --
   --------------------------------------

   function Make_Attribute_Definition_Clause
     (Defining_Identifier  : Node_Id;
      Attribute_Designator : Attribute_Id;
1246
      Expression           : Node_Id) return Node_Id
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
   is
      N : Node_Id;
   begin
      N := New_Node (K_Attribute_Definition_Clause);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Attribute_Designator (N, AN (Attribute_Designator));
      Set_Expression (N, Expression);

      return N;
   end Make_Attribute_Definition_Clause;

   -------------------------------
   -- Make_Attribute_Designator --
   -------------------------------

   function Make_Attribute_Designator
     (Prefix    : Node_Id;
1264
      Attribute : Attribute_Id) return Node_Id
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
   is
      N : Node_Id;
   begin
      N := New_Node (K_Attribute_Designator);
      Set_Prefix (N, Prefix);
      Set_Name (N, AN (Attribute));
      return N;
   end Make_Attribute_Designator;

   --------------------------
   -- Make_Block_Statement --
   --------------------------

   function Make_Block_Statement
     (Statement_Identifier : Node_Id := No_Node;
      Declarative_Part     : List_Id;
      Statements           : List_Id;
1282
      Exception_Handler    : List_Id := No_List) return Node_Id
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
   is
      N : Node_Id;
   begin
      N := New_Node (K_Block_Statement);
      Set_Defining_Identifier (N, Statement_Identifier);
      if Present (Statement_Identifier) then
         Set_Corresponding_Node (Statement_Identifier, N);
      end if;
      Set_Declarative_Part (N, Declarative_Part);
      Set_Statements (N, Statements);
      if not Is_Empty (Exception_Handler) then
         Set_Exception_Handler (N, Exception_Handler);
      end if;
      return N;
   end Make_Block_Statement;

   ---------------------
   -- Make_Case_Label --
   ---------------------

   function Make_Case_Label (Value : Value_Id) return Node_Id is
      N : Node_Id;
   begin
      N := New_Node (K_Case_Label);
      Set_Value (N, Value);
      return N;
   end Make_Case_Label;

   -------------------------
   -- Make_Case_Statement --
   -------------------------

   function Make_Case_Statement
     (Expression                  : Node_Id;
1317
      Case_Statement_Alternatives : List_Id) return Node_Id
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
   is
      N : Node_Id;
   begin
      N := New_Node (K_Case_Statement);
      Set_Expression (N, Expression);
      Set_Case_Statement_Alternatives (N, Case_Statement_Alternatives);
      return N;
   end Make_Case_Statement;

   -------------------------------------
   -- Make_Case_Statement_Alternative --
   -------------------------------------

   function Make_Case_Statement_Alternative
     (Discret_Choice_List : List_Id;
1333
      Statements          : List_Id) return Node_Id
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
   is
      N : Node_Id;
   begin
      N := New_Node (K_Case_Statement_Alternative);
      Set_Discret_Choice_List (N, Discret_Choice_List);
      Set_Statements (N, Statements);
      return N;
   end Make_Case_Statement_Alternative;

   --------------------------------
   -- Make_Component_Association --
   --------------------------------

   function Make_Component_Association
     (Selector_Name : Node_Id;
1349
      Expression    : Node_Id) return Node_Id
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
   is
      N : Node_Id;
   begin
      N := New_Node (K_Component_Association);
      Set_Defining_Identifier (N, Selector_Name);
      Set_Expression (N, Expression);
      return N;
   end Make_Component_Association;

   --------------------------------
   -- Make_Component_Declaration --
   --------------------------------

   function Make_Component_Declaration
     (Defining_Identifier : Node_Id;
      Subtype_Indication  : Node_Id;
      Expression          : Node_Id := No_Node;
1367
1368
      Aliased_Present     : Boolean := False) return Node_Id
   is
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
      N : Node_Id;

   begin
      N := New_Node (K_Component_Declaration);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Subtype_Indication (N, Subtype_Indication);
      Set_Expression (N, Expression);
      Set_Aliased_Present (N, Aliased_Present);
      return N;
   end Make_Component_Declaration;

   ----------------------------------
   -- Make_Decimal_Type_Definition --
   ----------------------------------

   function Make_Decimal_Type_Definition
     (D_Digits : Unsigned_Long_Long;
1386
      D_Scale  : Unsigned_Long_Long) return Node_Id
1387
1388
1389
1390
1391
1392
   is
      N : Node_Id;
      V : Value_Id;
   begin
      N := New_Node (K_Decimal_Type_Definition);

1393
1394
1395
      V :=
        New_Floating_Point_Value
          (Long_Double (1.0 / (10**(Integer (D_Scale)))));
1396
1397
1398

      Set_Scale (N, Make_Literal (V));

1399
      V := New_Integer_Value (D_Digits, 1, 10);
1400
1401
1402
1403
1404
1405
1406
1407
1408
      Set_Total (N, V);

      return N;
   end Make_Decimal_Type_Definition;

   ------------------------------
   -- Make_Defining_Identifier --
   ------------------------------

1409
1410
1411
   function Make_Defining_Identifier
     (Name : Name_Id; Normalize : Boolean := True) return Node_Id
   is
1412
1413
1414
1415
      N : Node_Id;

   begin
      N := New_Node (K_Defining_Identifier);
1416
1417
1418
1419
1420
1421
      if Normalize then
         Set_Name (N, To_Ada_Name (Name));
      else
         Set_Name (N, Name);
      end if;

1422
1423
1424
1425
1426
1427
1428
1429
1430
      return N;
   end Make_Defining_Identifier;

   --------------------------
   -- Make_Delay_Statement --
   --------------------------

   function Make_Delay_Statement
     (Expression : Node_Id;
1431
      Is_Until   : Boolean := False) return Node_Id
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
   is
      N : Node_Id;
   begin
      N := New_Node (K_Delay_Statement);
      Set_Expression (N, Expression);
      Set_Is_Until (N, Is_Until);
      return N;
   end Make_Delay_Statement;

   ----------------------------------
   -- Make_Derived_Type_Definition --
   ----------------------------------

   function Make_Derived_Type_Definition
     (Subtype_Indication    : Node_Id;
      Record_Extension_Part : Node_Id := No_Node;
      Is_Abstract_Type      : Boolean := False;
      Is_Private_Extention  : Boolean := False;
1450
      Is_Subtype            : Boolean := False) return Node_Id
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
   is
      N : Node_Id;

   begin
      N := New_Node (K_Derived_Type_Definition);
      Set_Is_Abstract_Type (N, Is_Abstract_Type);
      Set_Is_Private_Extention (N, Is_Private_Extention);
      Set_Subtype_Indication (N, Subtype_Indication);
      Set_Record_Extension_Part (N, Record_Extension_Part);
      Set_Is_Subtype (N, Is_Subtype);
      return N;
   end Make_Derived_Type_Definition;

   ---------------------
   -- Make_Designator --
   ---------------------

   function Make_Designator
     (Designator : Name_Id;
      Parent     : Name_Id := No_Name;
1471
      Is_All     : Boolean := False) return Node_Id
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
   is
      N : Node_Id;
      P : Node_Id;
   begin
      N := New_Node (K_Designator);
      Set_Defining_Identifier (N, Make_Defining_Identifier (Designator));
      Set_Is_All (N, Is_All);

      if Parent /= No_Name then
         P := New_Node (K_Designator);
         Set_Defining_Identifier (P, Make_Defining_Identifier (Parent));
         Set_Homogeneous_Parent_Unit_Name (N, P);
      end if;

      return N;
   end Make_Designator;

   ------------------------------
   -- Make_Element_Association --
   ------------------------------

   function Make_Element_Association
     (Index      : Node_Id;
1495
      Expression : Node_Id) return Node_Id
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
   is
      N : Node_Id;
   begin
      N := New_Node (K_Element_Association);
      Set_Index (N, Index);
      Set_Expression (N, Expression);
      return N;
   end Make_Element_Association;

   --------------------------
   -- Make_Elsif_Statement --
   --------------------------

   function Make_Elsif_Statement
     (Condition       : Node_Id;
1511
      Then_Statements : List_Id) return Node_Id
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
   is
      N : Node_Id;
   begin
      N := New_Node (K_Elsif_Statement);
      Set_Condition (N, Condition);
      Set_Then_Statements (N, Then_Statements);
      return N;
   end Make_Elsif_Statement;

   --------------------------------------
   -- Make_Enumeration_Type_Definition --
   --------------------------------------

   function Make_Enumeration_Type_Definition
1526
     (Enumeration_Literals : List_Id) return Node_Id
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
   is
      N : Node_Id;

   begin
      N := New_Node (K_Enumeration_Type_Definition);
      Set_Enumeration_Literals (N, Enumeration_Literals);
      return N;
   end Make_Enumeration_Type_Definition;

   --------------------------------------------
   -- Make_Enumeration_Representation_Clause --
   --------------------------------------------

   function Make_Enumeration_Representation_Clause
     (Defining_Identifier : Node_Id;
1542
      Array_Aggregate     : Node_Id) return Node_Id
1543
1544
1545
   is
      N : Node_Id;
   begin
1546
      N := New_Node (K_Enumeration_Representation_Clause);
1547
      Set_Defining_Identifier (N, Defining_Identifier);
1548
      Set_Array_Aggregate (N, Array_Aggregate);
1549
1550
1551
1552
1553
1554
1555
      return N;
   end Make_Enumeration_Representation_Clause;

   -------------------------------
   -- Make_Explicit_Dereference --
   -------------------------------

1556
   function Make_Explicit_Dereference (Prefix : Node_Id) return Node_Id is
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
      N : Node_Id;
   begin
      N := New_Node (K_Explicit_Dereference);
      Set_Prefix (N, Prefix);
      return N;
   end Make_Explicit_Dereference;

   --------------------------------
   -- Make_Exception_Declaration --
   --------------------------------

   function Make_Exception_Declaration
     (Defining_Identifier : Node_Id;
1570
      Renamed_Exception   : Node_Id := No_Node) return Node_Id
1571
1572
1573
1574
   is
      N : Node_Id;

   begin
1575
      N := New_Node (K_Exception_Declaration);
1576
      Set_Defining_Identifier (N, Defining_Identifier);
1577
1578
1579
      Set_Renamed_Entity (N, Renamed_Exception);
      Set_Corresponding_Node (Defining_Identifier, N);
      Set_Parent (N, Current_Package);
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
      return N;
   end Make_Exception_Declaration;

   ---------------------
   -- Make_Expression --
   ---------------------

   function Make_Expression
     (Left_Expr  : Node_Id;
      Operator   : Operator_Type := Op_None;
1590
      Right_Expr : Node_Id       := No_Node) return Node_Id
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
   is
      N : Node_Id;
   begin
      N := New_Node (K_Expression);
      Set_Left_Expr (N, Left_Expr);
      Set_Operator (N, Operator_Type'Pos (Operator));
      Set_Right_Expr (N, Right_Expr);
      return N;
   end Make_Expression;

   ------------------------
   -- Make_For_Statement --
   ------------------------

   function Make_For_Statement
     (Defining_Identifier : Node_Id;
      Range_Constraint    : Node_Id;
1608
      Statements          : List_Id) return Node_Id
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
   is
      N : Node_Id;
   begin
      N := New_Node (K_For_Statement);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Range_Constraint (N, Range_Constraint);
      Set_Statements (N, Statements);
      return N;
   end Make_For_Statement;

   -------------------------
   -- Make_Loop_Statement --
   -------------------------

1623
   function Make_Loop_Statement (Statements : List_Id) return Node_Id is
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
      N : Node_Id;
   begin
      N := New_Node (K_Loop_Statement);
      Set_Statements (N, Statements);
      return N;
   end Make_Loop_Statement;

   --------------------------------
   -- Make_Full_Type_Declaration --
   --------------------------------

   function Make_Full_Type_Declaration
     (Defining_Identifier : Node_Id;
      Type_Definition     : Node_Id;
      Discriminant_Spec   : Node_Id := No_Node;
      Parent              : Node_Id := No_Node;
1640
      Is_Subtype          : Boolean := False) return Node_Id
1641
   is
1642
      N            : Node_Id;
1643
1644
1645
1646
      T_Definition : Node_Id := Type_Definition;
   begin
      --  Remove anonymous type if necessary.
      if Kind (Type_Definition) = K_Array_Type_Definition then
1647
1648
1649
1650
1651
1652
1653
         T_Definition :=
           Remove_Anonymous_Array_Type_Definition
             (Range_Constraints (Type_Definition),
              Component_Definition (Type_Definition),
              Nodes.Aliased_Present (Type_Definition),
              Defining_Identifier,
              True);
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
      end if;

      N := New_Node (K_Full_Type_Declaration);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Corresponding_Node (Defining_Identifier, N);
      Set_Type_Definition (N, T_Definition);
      Set_Discriminant_Spec (N, Discriminant_Spec);
      if Present (Parent) then
         Set_Parent (N, Parent);
      else
         Set_Parent (N, Current_Package);
      end if;
      Set_Is_Subtype (N, Is_Subtype);
      return N;
   end Make_Full_Type_Declaration;

   ------------------------------
   -- Make_Exit_When_Statement --
   ------------------------------

1674
   function Make_Exit_When_Statement (Condition : Node_Id) return Node_Id is
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
      N : Node_Id;
   begin
      N := New_Node (K_Exit_When_Statement);
      Set_Condition (N, Condition);
      return N;
   end Make_Exit_When_Statement;

   -----------------------
   -- Make_If_Statement --
   -----------------------

   function Make_If_Statement
     (Condition        : Node_Id;
      Then_Statements  : List_Id;
      Elsif_Statements : List_Id := No_List;
1690
      Else_Statements  : List_Id := No_List) return Node_Id
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
   is
      N : Node_Id;
   begin
      N := New_Node (K_If_Statement);
      Set_Condition (N, Condition);
      Set_Then_Statements (N, Then_Statements);
      Set_Elsif_Statements (N, Elsif_Statements);
      Set_Else_Statements (N, Else_Statements);
      return N;
   end Make_If_Statement;

   ----------------------------
   -- Make_Indexed_Component --
   ----------------------------

   function Make_Indexed_Component
     (Prefix      : Node_Id;
1708
      Expressions : List_Id) return Node_Id
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
   is
      N : Node_Id;
   begin
      N := New_Node (K_Indexed_Component);
      Set_Prefix (N, Prefix);
      Set_Expressions (N, Expressions);
      return N;
   end Make_Indexed_Component;

   ------------------
   -- Make_List_Id --
   ------------------

   function Make_List_Id
     (N1 : Node_Id;
      N2 : Node_Id := No_Node;
      N3 : Node_Id := No_Node;
1726
      N4 : Node_Id := No_Node) return List_Id
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
   is
      L : List_Id;
   begin
      L := New_List (K_List_Id);
      Append_Node_To_List (N1, L);
      if Present (N2) then
         Append_Node_To_List (N2, L);

         if Present (N3) then
            Append_Node_To_List (N3, L);

            if Present (N4) then
               Append_Node_To_List (N4, L);
            end if;
         end if;
      end if;
      return L;
   end Make_List_Id;

   ------------------
   -- Make_Literal --
   ------------------

   function Make_Literal
     (Value             : Value_Id;
1752
1753
      Parent_Designator : Node_Id := No_Node) return Node_Id
   is
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
      N : Node_Id;

   begin
      N := New_Node (K_Literal);
      Set_Value (N, Value);
      Set_Parent_Designator (N, Parent_Designator);
      return N;
   end Make_Literal;

   -----------------------------------------
   -- Make_Main_Subprogram_Implementation --
   -----------------------------------------

   function Make_Main_Subprogram_Implementation
     (Identifier : Node_Id;
      Build_Spec : Boolean := False;
1770
      Build_Body : Boolean := True) return Node_Id
1771
   is
1772
1773
1774
      Unit        : Node_Id;
      Spg         : Node_Id;
      N           : Node_Id;
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
      Style_State : constant Value_Id := Get_Style_State;
   begin
      Unit := New_Node (K_Main_Subprogram_Implementation);
      Set_Defining_Identifier (Unit, Identifier);
      Set_Corresponding_Node (Identifier, Unit);

      ----------
      -- Spec --
      ----------

1785
1786
1787
1788
1789
1790
1791
      Spg :=
        Make_Subprogram_Specification
          (Defining_Identifier => Copy_Node (Identifier),
           Parameter_Profile   => No_List,
           Return_Type         => No_Node,
           Parent              => No_Node,
           Renamed_Subprogram  => No_Node);
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802

      if Build_Spec then
         Set_Withed_Packages (Spg, New_List (K_Withed_Packages));
         Set_Package_Headers (Spg, New_List (K_Package_Headers));

         --  Adding a comment header

         Make_Comment_Header (Package_Headers (Spg));

         --  Disabling style checks

1803
1804
1805
1806
         N :=
           Make_Pragma_Statement
             (Pragma_Style_Checks,
              Make_List_Id (Make_Literal (Style_State)));
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
         Append_Node_To_List (N, Package_Headers (Spg));

         --  Binding

         Set_Main_Subprogram_Unit (Spg, Unit);
         Set_Subprogram_Specification (Unit, Spg);
      end if;

      if Build_Body then

         ----------
         -- Body --
         ----------

1821
1822
1823
1824
1825
         Spg :=
           Make_Subprogram_Implementation
             (Specification => Spg,
              Declarations  => New_List (K_Declaration_List),
              Statements    => New_List (K_Statement_List));
1826
1827
1828
1829
1830
1831
1832
1833
1834
         Set_Withed_Packages (Spg, New_List (K_Withed_Packages));
         Set_Package_Headers (Spg, New_List (K_Package_Headers));

         --  Adding a comment header

         Make_Comment_Header (Package_Headers (Spg));

         --  Disabling style checks

1835
1836
1837
1838
         N :=
           Make_Pragma_Statement
             (Pragma_Style_Checks,
              Make_List_Id (Make_Literal (Style_State)));
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
         Append_Node_To_List (N, Package_Headers (Spg));

         --  Binding

         Set_Main_Subprogram_Unit (Spg, Unit);
         Set_Subprogram_Implementation (Unit, Spg);
      end if;

      return Unit;
   end Make_Main_Subprogram_Implementation;

   -------------------------
   -- Make_Null_Statement --
   -------------------------

   function Make_Null_Statement return Node_Id is
      N : Node_Id;
   begin
      N := New_Node (K_Null_Statement);
      return N;
   end Make_Null_Statement;

   -----------------------------
   -- Make_Object_Declaration --
   -----------------------------

   function Make_Object_Declaration
     (Defining_Identifier : Node_Id;
      Constant_Present    : Boolean := False;
      Object_Definition   : Node_Id;
      Expression          : Node_Id := No_Node;
      Parent              : Node_Id := No_Node;
      Renamed_Object      : Node_Id := No_Node;
      Aliased_Present     : Boolean := False;
1873
      Discriminant_Spec   : Node_Id := No_Node) return Node_Id
1874
   is
1875
      N              : Node_Id;
1876
1877
1878
1879
1880
      Obj_Definition : Node_Id := Object_Definition;
      Exp            : Node_Id := Expression;
   begin
      --  Remove anonymous type if necessary.
      if Kind (Obj_Definition) = K_Array_Type_Definition then
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         Obj_Definition :=
           Remove_Anonymous_Array_Type_Definition
             (Range_Constraints (Object_Definition),
              Component_Definition (Object_Definition),
              Nodes.Aliased_Present (Object_Definition),
              Defining_Identifier);
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         --  Fully qualify aggregates
         if Kind (Exp) = K_Array_Aggregate then
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            Exp := Make_Qualified_Expression (Obj_Definition, Expression);
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         end if;
      end if;
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      N := New_Node (K_Object_Declaration);
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      Set_Defining_Identifier (N, Defining_Identifier);
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      Set_Corresponding_Node (Defining_Identifier, N);
      Set_Constant_Present (N, Constant_Present);
      Set_Aliased_Present (N, Aliased_Present);
      Set_Object_Definition (N, Obj_Definition);
      Set_Expression (N, Exp);
      Set_Renamed_Entity (N, Renamed_Object);
      Set_Discriminant_Spec (N, Discriminant_Spec);
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      if No (Parent) then
         Set_Parent (N, Current_Package);
      else
         Set_Parent (N, Parent);
      end if;

      return N;
   end Make_Object_Declaration;

   -------------------------------
   -- Make_Object_Instantiation --
   -------------------------------

   function Make_Object_Instantiation
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     (Qualified_Expression : Node_Id) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Object_Instantiation);
      Set_Qualified_Expression (N, Qualified_Expression);
      return N;
   end Make_Object_Instantiation;

   ------------------------------
   -- Make_Package_Declaration --
   ------------------------------

   function Make_Package_Declaration (Identifier : Node_Id) return Node_Id is
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      Pkg         : Node_Id;
      Unit        : Node_Id;
      N           : Node_Id;
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      Style_State : constant Value_Id := Get_Style_State;
   begin
      Unit := New_Node (K_Package_Declaration);
      Set_Defining_Identifier (Unit, Identifier);
      Set_Corresponding_Node (Identifier, Unit);

      --  FIXME : Set the correct parent!

      ----------
      -- Spec --
      ----------

      Pkg := New_Node (K_Package_Specification);
      Set_Withed_Packages (Pkg, New_List (K_Withed_Packages));
      Set_Package_Headers (Pkg, New_List (K_Package_Headers));

      --  Adding a comment header

      Make_Comment_Header (Package_Headers (Pkg));

      --  Disabling style checks

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      N :=
        Make_Pragma_Statement
          (Pragma_Style_Checks,
           Make_List_Id (Make_Literal (Style_State)));
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      Append_Node_To_List (N, Package_Headers (Pkg));

      Set_Visible_Part (Pkg, New_List (K_Declaration_List));
      Set_Private_Part (Pkg, New_List (K_Declaration_List));
      Set_Package_Declaration (Pkg, Unit);
      Set_Package_Specification (Unit, Pkg);

      ----------
      -- Body --
      ----------

      Pkg := New_Node (K_Package_Implementation);
      Set_Withed_Packages (Pkg, New_List (K_Withed_Packages));
      Set_Package_Headers (Pkg, New_List (K_Package_Headers));

      --  Adding a comment header

      Make_Comment_Header (Package_Headers (Pkg));

      --  Disabling style checks

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      N :=
        Make_Pragma_Statement
          (Pragma_Style_Checks,
           Make_List_Id (Make_Literal (Style_State)));
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      Append_Node_To_List (N, Package_Headers (Pkg));

      Set_Declarations (Pkg, New_List (K_Declaration_List));
      Set_Statements (Pkg, New_List (K_Statement_List));
      Set_Package_Declaration (Pkg, Unit);
      Set_Package_Implementation (Unit, Pkg);

      return Unit;
   end Make_Package_Declaration;

   --------------------------------
   -- Make_Package_Instantiation --
   --------------------------------

   function Make_Package_Instantiation
     (Defining_Identifier : Node_Id;
      Generic_Package     : Node_Id;
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      Parameter_List      : List_Id := No_List) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Package_Instantiation);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Corresponding_Node (Defining_Identifier, N);
      Set_Generic_Package (N, Generic_Package);
      Set_Parameter_List (N, Parameter_List);
      return N;
   end Make_Package_Instantiation;

   ----------------------------------
   -- Make_Private_Type_Definition --
   ----------------------------------

   function Make_Private_Type_Definition return Node_Id is
   begin
      return New_Node (K_Private_Type_Definition);
   end Make_Private_Type_Definition;

   --------------------------------
   -- Make_Parameter_Association --
   --------------------------------

   function Make_Parameter_Association
     (Selector_Name    : Node_Id;
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      Actual_Parameter : Node_Id) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Parameter_Association);
      Set_Selector_Name (N, Selector_Name);
      Set_Actual_Parameter (N, Actual_Parameter);
      return N;
   end Make_Parameter_Association;

   ----------------------------------
   -- Make_Parameter_Specification --
   ----------------------------------

   function Make_Parameter_Specification
     (Defining_Identifier : Node_Id;
      Subtype_Mark        : Node_Id;
      Parameter_Mode      : Mode_Id := Mode_In;
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      Expression          : Node_Id := No_Node) return Node_Id
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   is
      P : Node_Id;

   begin
      P := New_Node (K_Parameter_Specification);
      Set_Defining_Identifier (P, Defining_Identifier);
      Set_Parameter_Type (P, Subtype_Mark);
      Set_Parameter_Mode (P, Parameter_Mode);
      Set_Expression (P, Expression);
      return P;
   end Make_Parameter_Specification;

   ---------------------------
   -- Make_Pragma_Statement --
   ---------------------------

   function Make_Pragma_Statement
     (The_Pragma    : Pragma_Id;
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      Argument_List : List_Id := No_List) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Pragma_Statement);

      Set_Defining_Identifier (N, Make_Defining_Identifier (GN (The_Pragma)));
      Set_Argument_List (N, Argument_List);
      return N;
   end Make_Pragma_Statement;

   --------------------------------
   -- Make_Protected_Object_Spec --
   --------------------------------

   function Make_Protected_Object_Spec
     (Defining_Identifier : Node_Id;
      Visible_Part        : List_Id;
      Private_Part        : List_Id;
      Parent              : Node_Id := Current_Package;
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      Is_Type             : Boolean := False) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Protected_Object_Spec);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Visible_Part (N, Visible_Part);
      Set_Private_Part (N, Private_Part);
      Set_Parent (N, Parent);
      Set_Is_Type (N, Is_Type);
      return N;
   end Make_Protected_Object_Spec;

   --------------------------------
   -- Make_Protected_Object_Body --
   --------------------------------

   function Make_Protected_Object_Body
     (Defining_Identifier : Node_Id;
2105
      Statements          : List_Id) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Protected_Object_Body);
      Set_Defining_Identifier (N, Defining_Identifier);
      Set_Statements (N, Statements);
      return N;
   end Make_Protected_Object_Body;

   -------------------------------
   -- Make_Qualified_Expression --
   -------------------------------

   function Make_Qualified_Expression
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2121
     (Subtype_Mark : Node_Id;
      Aggregate    : Node_Id) return Node_Id
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   is
      N : Node_Id;
   begin
      N := New_Node (K_Qualified_Expression);
      Set_Subtype_Mark (N, Subtype_Mark);
      Set_Aggregate (N, Aggregate);
      return N;
   end Make_Qualified_Expression;

   --------------------------
   -- Make_Raise_Statement --
   --------------------------

   function Make_Raise_Statement
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2137
     (Raised_Error : Node_Id := No_Node) return Node_Id
   is