Natools

-- type of objects.                                                         --
-- This is a basic implementation that does not support weak references or  --
-- concurrency. However since there is no internal state, operations on     --
-- non-overlapping objects should be thread-safe.                           --
------------------------------------------------------------------------------

with Ada.Finalization;
with System.Storage_Pools;

generic
   type Held_Data (<>) is limited private;
   Counter_Pool : in out System.Storage_Pools.Root_Storage_Pool'Class;
   Data_Pool : in out System.Storage_Pools.Root_Storage_Pool'Class;

package Natools.References is
   pragma Preelaborate (References);

   type Reference is new Ada.Finalization.Controlled with private;

   type Accessor (Data : not null access constant Held_Data) is

   Null_Reference : constant Reference;

private

   type Counter is new Natural;

   type Counter_Access is access Counter;
   for Counter_Access'Storage_Pool use Counter_Pool;

   type Data_Access is access Held_Data;
   for Data_Access'Storage_Pool use Data_Pool;

   type Reference is new Ada.Finalization.Controlled with record
      Count : Counter_Access := null;
      Data : Data_Access := null;
   end record;

   overriding procedure Adjust (Object : in out Reference);

-- Natools.Reference_Tests is a test suite for Natools.References           --
-- reference-counted object holder.                                         --
------------------------------------------------------------------------------

with Natools.Tests;

private with Ada.Finalization;
--  private with GNAT.Debug_Pools;
private with GNAT.Debug_Pools;
private with Natools.References;
private with System.Storage_Pools;

package Natools.Reference_Tests is

   package NT renames Natools.Tests;

   procedure All_Tests (Report : in out NT.Reporter'Class);

   type Counter is new Ada.Finalization.Limited_Controlled with record
      Instance_Number : Natural := 0;
   end record;

   function Factory return Counter;
   overriding procedure Finalize (Object : in out Counter);

--   Pool : GNAT.Debug_Pools.Debug_Pool;
   Pool : GNAT.Debug_Pools.Debug_Pool;

   package Refs is new Natools.References (Counter);
--     (Counter, System.Pool_Global.Global_Pool_Object, Pool);
   package Refs is new Natools.References
     (Counter,
      System.Storage_Pools.Root_Storage_Pool'Class (Pool),
      System.Storage_Pools.Root_Storage_Pool'Class (Pool));

end Natools.Reference_Tests;