1------------------------------------------------------------------------------ 2-- -- 3-- GNAT LIBRARY COMPONENTS -- 4-- -- 5-- A D A . C O N T A I N E R S . I N D E F I N I T E _ H O L D E R S -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2011, Free Software Foundation, Inc. -- 10-- -- 11-- This specification is derived from the Ada Reference Manual for use with -- 12-- GNAT. The copyright notice above, and the license provisions that follow -- 13-- apply solely to the contents of the part following the private keyword. -- 14-- -- 15-- GNAT is free software; you can redistribute it and/or modify it under -- 16-- terms of the GNU General Public License as published by the Free Soft- -- 17-- ware Foundation; either version 3, or (at your option) any later ver- -- 18-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 19-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 20-- or FITNESS FOR A PARTICULAR PURPOSE. -- 21-- -- 22-- As a special exception under Section 7 of GPL version 3, you are granted -- 23-- additional permissions described in the GCC Runtime Library Exception, -- 24-- version 3.1, as published by the Free Software Foundation. -- 25-- -- 26-- You should have received a copy of the GNU General Public License and -- 27-- a copy of the GCC Runtime Library Exception along with this program; -- 28-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 29-- <http://www.gnu.org/licenses/>. -- 30------------------------------------------------------------------------------ 31 32private with Ada.Finalization; 33private with Ada.Streams; 34 35generic 36 type Element_Type (<>) is private; 37 with function "=" (Left, Right : Element_Type) return Boolean is <>; 38 39package Ada.Containers.Indefinite_Holders is 40 pragma Preelaborate (Indefinite_Holders); 41 pragma Remote_Types (Indefinite_Holders); 42 43 type Holder is tagged private; 44 pragma Preelaborable_Initialization (Holder); 45 46 Empty_Holder : constant Holder; 47 48 function "=" (Left, Right : Holder) return Boolean; 49 50 function To_Holder (New_Item : Element_Type) return Holder; 51 52 function Is_Empty (Container : Holder) return Boolean; 53 54 procedure Clear (Container : in out Holder); 55 56 function Element (Container : Holder) return Element_Type; 57 58 procedure Replace_Element 59 (Container : in out Holder; 60 New_Item : Element_Type); 61 62 procedure Query_Element 63 (Container : Holder; 64 Process : not null access procedure (Element : Element_Type)); 65 procedure Update_Element 66 (Container : Holder; 67 Process : not null access procedure (Element : in out Element_Type)); 68 69 procedure Assign (Target : in out Holder; Source : Holder); 70 71 function Copy (Source : Holder) return Holder; 72 73 procedure Move (Target : in out Holder; Source : in out Holder); 74 75private 76 77 package AF renames Ada.Finalization; 78 79 type Element_Access is access all Element_Type; 80 81 procedure Read 82 (Stream : not null access Ada.Streams.Root_Stream_Type'Class; 83 Container : out Holder); 84 85 procedure Write 86 (Stream : not null access Ada.Streams.Root_Stream_Type'Class; 87 Container : Holder); 88 89 type Holder is new Ada.Finalization.Controlled with record 90 Element : Element_Access; 91 Busy : Natural := 0; 92 end record; 93 for Holder'Read use Read; 94 for Holder'Write use Write; 95 96 overriding procedure Adjust (Container : in out Holder); 97 overriding procedure Finalize (Container : in out Holder); 98 99 Empty_Holder : constant Holder := (AF.Controlled with null, 0); 100 101end Ada.Containers.Indefinite_Holders; 102