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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) 2004-2012, 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.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 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; pragma Inline (Constant_Reference); function Reference (Container : aliased in out List; Position : Cursor) return Reference_Type; pragma Inline (Reference); procedure Assign (Target : in out List; Source : List); function Copy (Source : List) 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); type Node_Type; type Node_Access is access Node_Type; type Node_Type is limited record Element : aliased Element_Type; Next : Node_Access; Prev : Node_Access; end record; use Ada.Finalization; use Ada.Streams; 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; 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 : 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; type Reference_Control_Type is new Controlled with record Container : List_Access; end record; overriding procedure Adjust (Control : in out Reference_Control_Type); pragma Inline (Adjust); overriding procedure Finalize (Control : in out Reference_Control_Type); pragma Inline (Finalize); type Constant_Reference_Type (Element : not null access constant Element_Type) is record Control : Reference_Control_Type; end 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 record Control : Reference_Control_Type; end 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 := (Controlled with null, null, 0, 0, 0); No_Element : constant Cursor := Cursor'(null, null); end Ada.Containers.Doubly_Linked_Lists;
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