/usr/share/ada/adainclude/xmlada/sax-pointers.adb is in libxmlada4.1-dev 4.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- XML/Ada - An XML suite for Ada95 --
-- --
-- Copyright (C) 2007-2010, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public --
-- License as published by the Free Software Foundation; either --
-- version 2 of the License, or (at your option) any later version. --
-- --
-- This library 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. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public --
-- License along with this library; if not, write to the --
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-----------------------------------------------------------------------
with Ada.Unchecked_Deallocation;
package body Sax.Pointers is
procedure Unchecked_Free is new Ada.Unchecked_Deallocation
(Root_Encapsulated'Class, Root_Encapsulated_Access);
----------
-- Free --
----------
procedure Free (Data : in out Root_Encapsulated) is
pragma Unreferenced (Data);
begin
null;
end Free;
--------------------
-- Smart_Pointers --
--------------------
package body Smart_Pointers is
--------------
-- Allocate --
--------------
function Allocate (Data : Encapsulated'Class) return Pointer is
Tmp : constant Encapsulated_Access :=
new Encapsulated'Class'(Data);
begin
return Allocate (Tmp);
end Allocate;
function Allocate (Data : access Encapsulated'Class) return Pointer is
begin
return (Ada.Finalization.Controlled with
Root_Encapsulated_Access (Data));
end Allocate;
---------
-- Get --
---------
function Get (P : Pointer) return Encapsulated_Access is
begin
return Encapsulated_Access (P.Data);
end Get;
---------
-- "=" --
---------
function "=" (P1, P2 : Pointer) return Boolean is
begin
return P1.Data = P2.Data;
end "=";
--------------
-- Finalize --
--------------
procedure Finalize (P : in out Pointer) is
Data : Root_Encapsulated_Access := P.Data;
begin
-- Make Finalize idempotent, since it could be called several
-- times for the same instance (RM 7.6.1(24)
P.Data := null;
-- Test if refcount is > 0, in case we are already freeing this
-- element. That shouldn't happen, though, since we are not in a
-- multi-tasking environment.
if Data /= null and then Data.Refcount > 0 then
Data.Refcount := Data.Refcount - 1;
if Data.Refcount = 0 then
Free (Data.all);
Unchecked_Free (Data);
end if;
end if;
end Finalize;
------------
-- Adjust --
------------
procedure Adjust (P : in out Pointer) is
begin
if P.Data /= null then
P.Data.Refcount := P.Data.Refcount + 1;
end if;
end Adjust;
end Smart_Pointers;
end Sax.Pointers;
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