File : pragmarc-queue_bounded_unprotected.adb
-- PragmAda Reusable Component (PragmARC)
-- Copyright (C) 2002 by PragmAda Software Engineering. All rights reserved.
-- **************************************************************************
--
-- History:
-- 2002 Oct 01 J. Carter V2.1--Added Context to Iterate; use mode out to allow scalars
-- 2002 May 01 J. Carter V2.0--Added Assign; implemented using PragmARC.List_Bounded_Unprotected
-- 2001 Jun 01 J. Carter V1.1--Added Peek
-- 2000 May 01 J. Carter V1.0--Initial release
--
package body PragmARC.Queue_Bounded_Unprotected is
procedure Clear (Queue : in out Handle) is
-- null;
begin -- Clear
Implementation.Clear (List => Queue.List);
end Clear;
procedure Assign (To : out Handle; From : in Handle) is
-- null;
begin -- Assign
Implementation.Assign (To => To.List, From => From.List);
end Assign;
procedure Put (Into : in out Handle; Item : in Element) is
New_Pos : Implementation.Position;
begin -- Put
Implementation.Insert (Into => Into.List, Item => Item, Before => Implementation.Off_List (Into.List), New_Pos => New_Pos);
end Put;
procedure Get (From : in out Handle; Item : out Element) is
Pos : Implementation.Position := Implementation.First (From.List);
begin -- Get
Assign (To => Item, From => Implementation.Get (From.List, Pos) );
Implementation.Delete (From => From.List, Pos => Pos);
end Get;
function Is_Full (Queue : Handle) return Boolean is
-- null;
begin -- Is_Full
return Implementation.Is_Full (Queue.List);
end Is_Full;
function Is_Empty (Queue : Handle) return Boolean is
-- null;
begin -- Is_Empty
return Implementation.Is_Empty (Queue.List);
end Is_Empty;
function Length (Queue : Handle) return Natural is
-- null;
begin -- Length
return Implementation.Length (Queue.List);
end Length;
function Peek (Queue : Handle) return Element is
-- null;
begin -- Peek
return Implementation.Get (Queue.List, Implementation.First (Queue.List) );
end Peek;
procedure Iterate (Over : in out Handle; Context : in out Context_Data) is
procedure Action
(Item : in out Element; Context : in out Context_Data; Pos : in Implementation.Position; Continue : out Boolean)
is
-- null;
begin -- Action
Action (Item => Item, Context => Context, Continue => Continue);
end Action;
procedure Iterate is new Implementation.Iterate (Context_Data => Context_Data, Action => Action);
begin -- Interate
Iterate (Over => Over.List, Context => Context);
end Iterate;
end PragmARC.Queue_Bounded_Unprotected;
--
-- This is free software; you can redistribute it and/or modify it under
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 2, or (at your option) any later version.
-- This software 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. 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