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------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- A D A . C O N T A I N E R S . --
-- R E S R I C T E D _ D O U B L Y _ L I N K E D _ L I S T S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2004-2006, 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, 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. --
-- --
-- This unit was originally developed by Matthew J Heaney. --
------------------------------------------------------------------------------
generic
type Element_Type is private;
with function "=" (Left, Right : Element_Type)
return Boolean is <>;
package Ada.Containers.Restricted_Doubly_Linked_Lists is
pragma Pure;
type List (Capacity : Count_Type) is tagged limited private;
pragma Preelaborable_Initialization (List);
type Cursor is private;
pragma Preelaborable_Initialization (Cursor);
Empty_List : constant List;
No_Element : constant Cursor;
function "=" (Left, Right : List) return Boolean;
procedure Assign (Target : in out List; Source : List);
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));
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);
procedure Swap
(Container : in out List;
I, J : Cursor);
procedure Swap_Links
(Container : in out List;
I, J : Cursor);
procedure Splice
(Container : in out List;
Before : Cursor;
Position : in out 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;
function Has_Element (Position : Cursor) 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);
end Generic_Sorting;
private
type Node_Type is limited record
Prev : Count_Type'Base;
Next : Count_Type;
Element : Element_Type;
end record;
type Node_Array is array (Count_Type range <>) of Node_Type;
type List (Capacity : Count_Type) is tagged limited record
Nodes : Node_Array (1 .. Capacity) := (others => <>);
Free : Count_Type'Base := -1;
First : Count_Type := 0;
Last : Count_Type := 0;
Length : Count_Type := 0;
end record;
Empty_List : constant List := (0, others => <>);
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;
No_Element : constant Cursor := (null, 0);
end Ada.Containers.Restricted_Doubly_Linked_Lists;
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