gcc/ada/a-coinho.ads

   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
  32 private with Ada.Finalization;
  33 private with Ada.Streams;
  34
  35 generic
  36    type Element_Type (<>) is private;
  37    with function "=" (Left, Right : Element_Type) return Boolean is <>;
  38
  39 package 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
  75 private
  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
 101 end Ada.Containers.Indefinite_Holders;