Subversion Repositories openrisc

------------------------------------------------------------------------------
--                                                                          --
--                         GNAT LIBRARY COMPONENTS                          --
--                                                                          --
--               ADA.CONTAINERS.BOUNDED_DOUBLY_LINKED_LISTS                 --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--          Copyright (C) 2004-2012, Free Software Foundation, Inc.         --
--                                                                          --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT. The copyright notice above, and the license provisions that follow --
-- apply solely to the  contents of the part following the private keyword. --
--                                                                          --
-- 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 3,  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.                                     --
--                                                                          --
-- 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/>.                                          --
--                                                                          --
-- This unit was originally developed by Matthew J Heaney.                  --
------------------------------------------------------------------------------
 
with Ada.Iterator_Interfaces;
 
private with Ada.Streams;
 
generic
   type Element_Type is private;
 
   with function "=" (Left, Right : Element_Type)
      return Boolean is <>;
 
package Ada.Containers.Bounded_Doubly_Linked_Lists is
   pragma Pure;
   pragma Remote_Types;
 
   type List (Capacity : Count_Type) is tagged private with
      Constant_Indexing => Constant_Reference,
      Variable_Indexing => Reference,
      Default_Iterator  => Iterate,
      Iterator_Element  => Element_Type;
 
   pragma Preelaborable_Initialization (List);
 
   type Cursor is private;
   pragma Preelaborable_Initialization (Cursor);
 
   Empty_List : constant List;
 
   No_Element : constant Cursor;
 
   function Has_Element (Position : Cursor) return Boolean;
 
   package List_Iterator_Interfaces is new
     Ada.Iterator_Interfaces (Cursor, Has_Element);
 
   function "=" (Left, Right : List) return Boolean;
 
   function Length (Container : List) return Count_Type;
 
   function Is_Empty (Container : List) return Boolean;
 
   procedure Clear (Container : in out List);
 
   function Element (Position : Cursor) return Element_Type;
 
   procedure Replace_Element
     (Container : in out List;
      Position  : Cursor;
      New_Item  : Element_Type);
 
   procedure Query_Element
     (Position : Cursor;
      Process  : not null access procedure (Element : Element_Type));
 
   procedure Update_Element
     (Container : in out List;
      Position  : Cursor;
      Process   : not null access procedure (Element : in out Element_Type));
 
   type Constant_Reference_Type
      (Element : not null access constant Element_Type) is private
   with
      Implicit_Dereference => Element;
 
   type Reference_Type
     (Element : not null access Element_Type) is private
   with
      Implicit_Dereference => Element;
 
   function Constant_Reference
     (Container : aliased List;
      Position  : Cursor) return Constant_Reference_Type;
 
   function Reference
     (Container : aliased in out List;
      Position  : Cursor) return Reference_Type;
 
   procedure Assign (Target : in out List; Source : List);
 
   function Copy (Source : List; Capacity : Count_Type := 0) return List;
 
   procedure Move
     (Target : in out List;
      Source : in out List);
 
   procedure Insert
     (Container : in out List;
      Before    : Cursor;
      New_Item  : Element_Type;
      Count     : Count_Type := 1);
 
   procedure Insert
     (Container : in out List;
      Before    : Cursor;
      New_Item  : Element_Type;
      Position  : out Cursor;
      Count     : Count_Type := 1);
 
   procedure Insert
     (Container : in out List;
      Before    : Cursor;
      Position  : out Cursor;
      Count     : Count_Type := 1);
 
   procedure Prepend
     (Container : in out List;
      New_Item  : Element_Type;
      Count     : Count_Type := 1);
 
   procedure Append
     (Container : in out List;
      New_Item  : Element_Type;
      Count     : Count_Type := 1);
 
   procedure Delete
     (Container : in out List;
      Position  : in out Cursor;
      Count     : Count_Type := 1);
 
   procedure Delete_First
     (Container : in out List;
      Count     : Count_Type := 1);
 
   procedure Delete_Last
     (Container : in out List;
      Count     : Count_Type := 1);
 
   procedure Reverse_Elements (Container : in out List);
 
   function Iterate
     (Container : List)
      return List_Iterator_Interfaces.Reversible_Iterator'class;
 
   function Iterate
     (Container : List;
      Start     : Cursor)
      return List_Iterator_Interfaces.Reversible_Iterator'class;
 
   procedure Swap
     (Container : in out List;
      I, J      : Cursor);
 
   procedure Swap_Links
     (Container : in out List;
      I, J      : Cursor);
 
   procedure Splice
     (Target : in out List;
      Before : Cursor;
      Source : in out List);
 
   procedure Splice
     (Target   : in out List;
      Before   : Cursor;
      Source   : in out List;
      Position : in out Cursor);
 
   procedure Splice
     (Container : in out List;
      Before    : Cursor;
      Position  : Cursor);
 
   function First (Container : List) return Cursor;
 
   function First_Element (Container : List) return Element_Type;
 
   function Last (Container : List) return Cursor;
 
   function Last_Element (Container : List) return Element_Type;
 
   function Next (Position : Cursor) return Cursor;
 
   procedure Next (Position : in out Cursor);
 
   function Previous (Position : Cursor) return Cursor;
 
   procedure Previous (Position : in out Cursor);
 
   function Find
     (Container : List;
      Item      : Element_Type;
      Position  : Cursor := No_Element) return Cursor;
 
   function Reverse_Find
     (Container : List;
      Item      : Element_Type;
      Position  : Cursor := No_Element) return Cursor;
 
   function Contains
     (Container : List;
      Item      : Element_Type) return Boolean;
 
   procedure Iterate
     (Container : List;
      Process   : not null access procedure (Position : Cursor));
 
   procedure Reverse_Iterate
     (Container : List;
      Process   : not null access procedure (Position : Cursor));
 
   generic
      with function "<" (Left, Right : Element_Type) return Boolean is <>;
   package Generic_Sorting is
 
      function Is_Sorted (Container : List) return Boolean;
 
      procedure Sort (Container : in out List);
 
      procedure Merge (Target, Source : in out List);
 
   end Generic_Sorting;
 
private
 
   pragma Inline (Next);
   pragma Inline (Previous);
 
   use Ada.Streams;
 
   type Node_Type is record
      Prev    : Count_Type'Base;
      Next    : Count_Type;
      Element : aliased Element_Type;
   end record;
 
   type Node_Array is array (Count_Type range <>) of Node_Type;
 
   type List (Capacity : Count_Type) is tagged record
      Nodes  : Node_Array (1 .. Capacity) := (others => <>);
      Free   : Count_Type'Base := -1;
      First  : Count_Type := 0;
      Last   : Count_Type := 0;
      Length : Count_Type := 0;
      Busy   : Natural := 0;
      Lock   : Natural := 0;
   end record;
 
   procedure Read
     (Stream : not null access Root_Stream_Type'Class;
      Item   : out List);
 
   for List'Read use Read;
 
   procedure Write
     (Stream : not null access Root_Stream_Type'Class;
      Item   : List);
 
   for List'Write use Write;
 
   type List_Access is access all List;
   for List_Access'Storage_Size use 0;
 
   type Cursor is
      record
         Container : List_Access;
         Node      : Count_Type := 0;
      end record;
 
   procedure Read
     (Stream : not null access Root_Stream_Type'Class;
      Item   : out Cursor);
 
   for Cursor'Read use Read;
 
   procedure Write
     (Stream : not null access Root_Stream_Type'Class;
      Item   : Cursor);
 
   for Cursor'Write use Write;
 
   type Constant_Reference_Type
      (Element : not null access constant Element_Type) is null record;
 
   procedure Write
     (Stream : not null access Root_Stream_Type'Class;
      Item   : Constant_Reference_Type);
 
   for Constant_Reference_Type'Write use Write;
 
   procedure Read
     (Stream : not null access Root_Stream_Type'Class;
      Item   : out Constant_Reference_Type);
 
   for Constant_Reference_Type'Read use Read;
 
   type Reference_Type
      (Element : not null access Element_Type) is null record;
 
   procedure Write
     (Stream : not null access Root_Stream_Type'Class;
      Item   : Reference_Type);
 
   for Reference_Type'Write use Write;
 
   procedure Read
     (Stream : not null access Root_Stream_Type'Class;
      Item   : out Reference_Type);
 
   for Reference_Type'Read use Read;
 
   Empty_List : constant List := (Capacity => 0, others => <>);
 
   No_Element : constant Cursor := Cursor'(null, 0);
 
end Ada.Containers.Bounded_Doubly_Linked_Lists;