------------------------------------------------------------------------------ -- -- -- GNAT LIBRARY COMPONENTS -- -- -- -- A D A . C O N T A I N E R S . H A S H E D _ S E T S -- -- -- -- S p e c -- -- -- -- Copyright (C) 2004-2005 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. -- ------------------------------------------------------------------------------ with Ada.Containers.Hash_Tables; with Ada.Streams; with Ada.Finalization; generic type Element_Type is private; with function Hash (Element : Element_Type) return Hash_Type; with function Equivalent_Elements (Left, Right : Element_Type) return Boolean; with function "=" (Left, Right : Element_Type) return Boolean is <>; package Ada.Containers.Hashed_Sets is pragma Preelaborate (Hashed_Sets); type Set is tagged private; type Cursor is private; Empty_Set : constant Set; No_Element : constant Cursor; function "=" (Left, Right : Set) return Boolean; function Equivalent_Sets (Left, Right : Set) return Boolean; function Length (Container : Set) return Count_Type; function Is_Empty (Container : Set) return Boolean; procedure Clear (Container : in out Set); function Element (Position : Cursor) return Element_Type; procedure Query_Element (Position : Cursor; Process : not null access procedure (Element : Element_Type)); procedure Replace_Element (Container : Set; Position : Cursor; By : Element_Type); procedure Move (Target : in out Set; Source : in out Set); procedure Insert (Container : in out Set; New_Item : Element_Type; Position : out Cursor; Inserted : out Boolean); procedure Insert (Container : in out Set; New_Item : Element_Type); procedure Include (Container : in out Set; New_Item : Element_Type); procedure Replace (Container : in out Set; New_Item : Element_Type); procedure Delete (Container : in out Set; Item : Element_Type); procedure Delete (Container : in out Set; Position : in out Cursor); procedure Exclude (Container : in out Set; Item : Element_Type); function Contains (Container : Set; Item : Element_Type) return Boolean; function Find (Container : Set; Item : Element_Type) return Cursor; function First (Container : Set) return Cursor; function Next (Position : Cursor) return Cursor; procedure Next (Position : in out Cursor); function Has_Element (Position : Cursor) return Boolean; function Equivalent_Elements (Left, Right : Cursor) return Boolean; function Equivalent_Elements (Left : Cursor; Right : Element_Type) return Boolean; function Equivalent_Elements (Left : Element_Type; Right : Cursor) return Boolean; procedure Iterate (Container : Set; Process : not null access procedure (Position : Cursor)); procedure Union (Target : in out Set; Source : Set); function Union (Left, Right : Set) return Set; function "or" (Left, Right : Set) return Set renames Union; procedure Intersection (Target : in out Set; Source : Set); function Intersection (Left, Right : Set) return Set; function "and" (Left, Right : Set) return Set renames Intersection; procedure Difference (Target : in out Set; Source : Set); function Difference (Left, Right : Set) return Set; function "-" (Left, Right : Set) return Set renames Difference; procedure Symmetric_Difference (Target : in out Set; Source : Set); function Symmetric_Difference (Left, Right : Set) return Set; function "xor" (Left, Right : Set) return Set renames Symmetric_Difference; function Overlap (Left, Right : Set) return Boolean; function Is_Subset (Subset : Set; Of_Set : Set) return Boolean; function Capacity (Container : Set) return Count_Type; procedure Reserve_Capacity (Container : in out Set; Capacity : Count_Type); generic type Key_Type (<>) is limited private; with function Key (Element : Element_Type) return Key_Type; with function Hash (Key : Key_Type) return Hash_Type; with function Equivalent_Keys (Key : Key_Type; Element : Element_Type) return Boolean; package Generic_Keys is function Contains (Container : Set; Key : Key_Type) return Boolean; function Find (Container : Set; Key : Key_Type) return Cursor; function Key (Position : Cursor) return Key_Type; function Element (Container : Set; Key : Key_Type) return Element_Type; procedure Replace (Container : in out Set; Key : Key_Type; New_Item : Element_Type); procedure Delete (Container : in out Set; Key : Key_Type); procedure Exclude (Container : in out Set; Key : Key_Type); procedure Update_Element_Preserving_Key (Container : in out Set; Position : Cursor; Process : not null access procedure (Element : in out Element_Type)); function Equivalent_Keys (Left : Cursor; Right : Key_Type) return Boolean; function Equivalent_Keys (Left : Key_Type; Right : Cursor) return Boolean; end Generic_Keys; private type Node_Type; type Node_Access is access Node_Type; type Node_Type is limited record Element : Element_Type; Next : Node_Access; end record; package HT_Types is new Hash_Tables.Generic_Hash_Table_Types (Node_Type, Node_Access); type Set is new Ada.Finalization.Controlled with record HT : HT_Types.Hash_Table_Type; end record; procedure Adjust (Container : in out Set); procedure Finalize (Container : in out Set); use HT_Types; use Ada.Finalization; type Set_Access is access all Set; for Set_Access'Storage_Size use 0; type Cursor is record Container : Set_Access; Node : Node_Access; end record; No_Element : constant Cursor := (Container => null, Node => null); use Ada.Streams; procedure Write (Stream : access Root_Stream_Type'Class; Container : Set); for Set'Write use Write; procedure Read (Stream : access Root_Stream_Type'Class; Container : out Set); for Set'Read use Read; Empty_Set : constant Set := (Controlled with HT => (null, 0, 0, 0)); end Ada.Containers.Hashed_Sets;