gcc/ada/a-cidlli.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT LIBRARY COMPONENTS                          --
   4 --                                                                          --
   5 --                      A D A . C O N T A I N E R S .                       --
   6 --        I N D E F I N I T E _ D O U B L Y _ L I N K E D _ L I S T S       --
   7 --                                                                          --
   8 --                                 S p e c                                  --
   9 --                                                                          --
  10 --          Copyright (C) 2004-2006, Free Software Foundation, Inc.         --
  11 --                                                                          --
  12 -- This specification is derived from the Ada Reference Manual for use with --
  13 -- GNAT. The copyright notice above, and the license provisions that follow --
  14 -- apply solely to the  contents of the part following the private keyword. --
  15 --                                                                          --
  16 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  17 -- terms of the  GNU General Public License as published  by the Free Soft- --
  18 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  19 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  20 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  21 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  22 -- for  more details.  You should have  received  a copy of the GNU General --
  23 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  24 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  25 -- Boston, MA 02110-1301, USA.                                              --
  26 --                                                                          --
  27 -- As a special exception,  if other files  instantiate  generics from this --
  28 -- unit, or you link  this unit with other files  to produce an executable, --
  29 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  30 -- covered  by the  GNU  General  Public  License.  This exception does not --
  31 -- however invalidate  any other reasons why  the executable file  might be --
  32 -- covered by the  GNU Public License.                                      --
  33 --                                                                          --
  34 -- This unit was originally developed by Matthew J Heaney.                  --
  35 ------------------------------------------------------------------------------
  36
  37 with Ada.Finalization;
  38 with Ada.Streams;
  39
  40 generic
  41    type Element_Type (<>) is private;
  42
  43    with function "=" (Left, Right : Element_Type)
  44       return Boolean is <>;
  45
  46 package Ada.Containers.Indefinite_Doubly_Linked_Lists is
  47    pragma Preelaborate;
  48
  49    type List is tagged private;
  50    pragma Preelaborable_Initialization (List);
  51
  52    type Cursor is private;
  53    pragma Preelaborable_Initialization (Cursor);
  54
  55    Empty_List : constant List;
  56
  57    No_Element : constant Cursor;
  58
  59    function "=" (Left, Right : List) return Boolean;
  60
  61    function Length (Container : List) return Count_Type;
  62
  63    function Is_Empty (Container : List) return Boolean;
  64
  65    procedure Clear (Container : in out List);
  66
  67    function Element (Position : Cursor) return Element_Type;
  68
  69    procedure Replace_Element
  70      (Container : in out List;
  71       Position  : Cursor;
  72       New_Item  : Element_Type);
  73
  74    procedure Query_Element
  75      (Position : Cursor;
  76       Process  : not null access procedure (Element : Element_Type));
  77
  78    procedure Update_Element
  79      (Container : in out List;
  80       Position  : Cursor;
  81       Process   : not null access procedure (Element : in out Element_Type));
  82
  83    procedure Move
  84      (Target : in out List;
  85       Source : in out List);
  86
  87    procedure Insert
  88      (Container : in out List;
  89       Before    : Cursor;
  90       New_Item  : Element_Type;
  91       Count     : Count_Type := 1);
  92
  93    procedure Insert
  94      (Container : in out List;
  95       Before    : Cursor;
  96       New_Item  : Element_Type;
  97       Position  : out Cursor;
  98       Count     : Count_Type := 1);
  99
 100    procedure Prepend
 101      (Container : in out List;
 102       New_Item  : Element_Type;
 103       Count     : Count_Type := 1);
 104
 105    procedure Append
 106      (Container : in out List;
 107       New_Item  : Element_Type;
 108       Count     : Count_Type := 1);
 109
 110    procedure Delete
 111      (Container : in out List;
 112       Position  : in out Cursor;
 113       Count     : Count_Type := 1);
 114
 115    procedure Delete_First
 116      (Container : in out List;
 117       Count     : Count_Type := 1);
 118
 119    procedure Delete_Last
 120      (Container : in out List;
 121       Count     : Count_Type := 1);
 122
 123    procedure Reverse_Elements (Container : in out List);
 124
 125    procedure Swap (Container : in out List; I, J : Cursor);
 126
 127    procedure Swap_Links (Container : in out List; I, J : Cursor);
 128
 129    procedure Splice
 130      (Target : in out List;
 131       Before : Cursor;
 132       Source : in out List);
 133
 134    procedure Splice
 135      (Target   : in out List;
 136       Before   : Cursor;
 137       Source   : in out List;
 138       Position : in out Cursor);
 139
 140    procedure Splice
 141      (Container : in out List;
 142       Before    : Cursor;
 143       Position  : Cursor);
 144
 145    function First (Container : List) return Cursor;
 146
 147    function First_Element (Container : List) return Element_Type;
 148
 149    function Last (Container : List) return Cursor;
 150
 151    function Last_Element (Container : List) return Element_Type;
 152
 153    function Next (Position : Cursor) return Cursor;
 154
 155    procedure Next (Position : in out Cursor);
 156
 157    function Previous (Position : Cursor) return Cursor;
 158
 159    procedure Previous (Position : in out Cursor);
 160
 161    function Find
 162      (Container : List;
 163       Item      : Element_Type;
 164       Position  : Cursor := No_Element) return Cursor;
 165
 166    function Reverse_Find
 167      (Container : List;
 168       Item      : Element_Type;
 169       Position  : Cursor := No_Element) return Cursor;
 170
 171    function Contains
 172      (Container : List;
 173       Item      : Element_Type) return Boolean;
 174
 175    function Has_Element (Position : Cursor) return Boolean;
 176
 177    procedure Iterate
 178      (Container : List;
 179       Process   : not null access procedure (Position : Cursor));
 180
 181    procedure Reverse_Iterate
 182      (Container : List;
 183       Process   : not null access procedure (Position : Cursor));
 184
 185    generic
 186       with function "<" (Left, Right : Element_Type) return Boolean is <>;
 187    package Generic_Sorting is
 188
 189       function Is_Sorted (Container : List) return Boolean;
 190
 191       procedure Sort (Container : in out List);
 192
 193       procedure Merge (Target, Source : in out List);
 194
 195    end Generic_Sorting;
 196
 197 private
 198    type Node_Type;
 199    type Node_Access is access Node_Type;
 200
 201    type Element_Access is access Element_Type;
 202
 203    type Node_Type is
 204       limited record
 205          Element : Element_Access;
 206          Next    : Node_Access;
 207          Prev    : Node_Access;
 208       end record;
 209
 210    use Ada.Finalization;
 211
 212    type List is
 213      new Controlled with record
 214         First  : Node_Access;
 215         Last   : Node_Access;
 216         Length : Count_Type := 0;
 217         Busy   : Natural := 0;
 218         Lock   : Natural := 0;
 219      end record;
 220
 221    procedure Adjust (Container : in out List);
 222
 223    procedure Finalize (Container : in out List) renames Clear;
 224
 225    use Ada.Streams;
 226
 227    procedure Read
 228      (Stream : not null access Root_Stream_Type'Class;
 229       Item   : out List);
 230
 231    for List'Read use Read;
 232
 233    procedure Write
 234      (Stream : not null access Root_Stream_Type'Class;
 235       Item   : List);
 236
 237    for List'Write use Write;
 238
 239    Empty_List : constant List := List'(Controlled with null, null, 0, 0, 0);
 240
 241    type List_Access is access constant List;
 242    for List_Access'Storage_Size use 0;
 243
 244    type Cursor is
 245       record
 246          Container : List_Access;
 247          Node      : Node_Access;
 248       end record;
 249
 250    procedure Read
 251      (Stream : not null access Root_Stream_Type'Class;
 252       Item   : out Cursor);
 253
 254    for Cursor'Read use Read;
 255
 256    procedure Write
 257      (Stream : not null access Root_Stream_Type'Class;
 258       Item   : Cursor);
 259
 260    for Cursor'Write use Write;
 261
 262    No_Element : constant Cursor := Cursor'(null, null);
 263
 264 end Ada.Containers.Indefinite_Doubly_Linked_Lists;