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------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- A D A . C O N T A I N E R S . D O U B L Y _ L I N K E D _ L I S T S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2004-2009, 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. --
------------------------------------------------------------------------------
private with Ada.Finalization;
private with Ada.Streams;
generic
type Element_Type is private;
with function "=" (Left, Right : Element_Type)
return Boolean is <>;
package Ada.Containers.Doubly_Linked_Lists is
pragma Preelaborate;
pragma Remote_Types;
type List is tagged 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;
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 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);
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;
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);
procedure Merge (Target, Source : in out List);
end Generic_Sorting;
private
pragma Inline (Next);
pragma Inline (Previous);
type Node_Type;
type Node_Access is access Node_Type;
type Node_Type is
limited record
Element : Element_Type;
Next : Node_Access;
Prev : Node_Access;
end record;
use Ada.Finalization;
type List is
new Controlled with record
First : Node_Access;
Last : Node_Access;
Length : Count_Type := 0;
Busy : Natural := 0;
Lock : Natural := 0;
end record;
overriding
procedure Adjust (Container : in out List);
overriding
procedure Finalize (Container : in out List) renames Clear;
use Ada.Streams;
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 constant List;
for List_Access'Storage_Size use 0;
type Cursor is
record
Container : List_Access;
Node : Node_Access;
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;
Empty_List : constant List := (Controlled with null, null, 0, 0, 0);
No_Element : constant Cursor := Cursor'(null, null);
end Ada.Containers.Doubly_Linked_Lists;
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