gcc/ada/a-cdlili.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT LIBRARY COMPONENTS                          --
   4 --                                                                          --
   5 --   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    --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2004-2007, 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 2,  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.  See the GNU General Public License --
  21 -- for  more details.  You should have  received  a copy of the GNU General --
  22 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  23 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  24 -- Boston, MA 02110-1301, USA.                                              --
  25 --                                                                          --
  26 -- As a special exception,  if other files  instantiate  generics from this --
  27 -- unit, or you link  this unit with other files  to produce an executable, --
  28 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  29 -- covered  by the  GNU  General  Public  License.  This exception does not --
  30 -- however invalidate  any other reasons why  the executable file  might be --
  31 -- covered by the  GNU Public License.                                      --
  32 --                                                                          --
  33 -- This unit was originally developed by Matthew J Heaney.                  --
  34 ------------------------------------------------------------------------------
  35
  36 with Ada.Finalization;
  37 with Ada.Streams;
  38
  39 generic
  40    type Element_Type is private;
  41
  42    with function "=" (Left, Right : Element_Type)
  43       return Boolean is <>;
  44
  45 package Ada.Containers.Doubly_Linked_Lists is
  46    pragma Preelaborate;
  47    pragma Remote_Types;
  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 Insert
 101      (Container : in out List;
 102       Before    : Cursor;
 103       Position  : out Cursor;
 104       Count     : Count_Type := 1);
 105
 106    procedure Prepend
 107      (Container : in out List;
 108       New_Item  : Element_Type;
 109       Count     : Count_Type := 1);
 110
 111    procedure Append
 112      (Container : in out List;
 113       New_Item  : Element_Type;
 114       Count     : Count_Type := 1);
 115
 116    procedure Delete
 117      (Container : in out List;
 118       Position  : in out Cursor;
 119       Count     : Count_Type := 1);
 120
 121    procedure Delete_First
 122      (Container : in out List;
 123       Count     : Count_Type := 1);
 124
 125    procedure Delete_Last
 126      (Container : in out List;
 127       Count     : Count_Type := 1);
 128
 129    procedure Reverse_Elements (Container : in out List);
 130
 131    procedure Swap
 132      (Container : in out List;
 133       I, J      : Cursor);
 134
 135    procedure Swap_Links
 136      (Container : in out List;
 137       I, J      : Cursor);
 138
 139    procedure Splice
 140      (Target : in out List;
 141       Before : Cursor;
 142       Source : in out List);
 143
 144    procedure Splice
 145      (Target   : in out List;
 146       Before   : Cursor;
 147       Source   : in out List;
 148       Position : in out Cursor);
 149
 150    procedure Splice
 151      (Container : in out List;
 152       Before    : Cursor;
 153       Position  : Cursor);
 154
 155    function First (Container : List) return Cursor;
 156
 157    function First_Element (Container : List) return Element_Type;
 158
 159    function Last (Container : List) return Cursor;
 160
 161    function Last_Element (Container : List) return Element_Type;
 162
 163    function Next (Position : Cursor) return Cursor;
 164
 165    procedure Next (Position : in out Cursor);
 166
 167    function Previous (Position : Cursor) return Cursor;
 168
 169    procedure Previous (Position : in out Cursor);
 170
 171    function Find
 172      (Container : List;
 173       Item      : Element_Type;
 174       Position  : Cursor := No_Element) return Cursor;
 175
 176    function Reverse_Find
 177      (Container : List;
 178       Item      : Element_Type;
 179       Position  : Cursor := No_Element) return Cursor;
 180
 181    function Contains
 182      (Container : List;
 183       Item      : Element_Type) return Boolean;
 184
 185    function Has_Element (Position : Cursor) return Boolean;
 186
 187    procedure Iterate
 188      (Container : List;
 189       Process   : not null access procedure (Position : Cursor));
 190
 191    procedure Reverse_Iterate
 192      (Container : List;
 193       Process   : not null access procedure (Position : Cursor));
 194
 195    generic
 196       with function "<" (Left, Right : Element_Type) return Boolean is <>;
 197    package Generic_Sorting is
 198
 199       function Is_Sorted (Container : List) return Boolean;
 200
 201       procedure Sort (Container : in out List);
 202
 203       procedure Merge (Target, Source : in out List);
 204
 205    end Generic_Sorting;
 206
 207 private
 208
 209    pragma Inline (Next);
 210    pragma Inline (Previous);
 211
 212    type Node_Type;
 213    type Node_Access is access Node_Type;
 214
 215    type Node_Type is
 216       limited record
 217          Element : Element_Type;
 218          Next    : Node_Access;
 219          Prev    : Node_Access;
 220       end record;
 221
 222    use Ada.Finalization;
 223
 224    type List is
 225      new Controlled with record
 226         First  : Node_Access;
 227         Last   : Node_Access;
 228         Length : Count_Type := 0;
 229         Busy   : Natural := 0;
 230         Lock   : Natural := 0;
 231      end record;
 232
 233    procedure Adjust (Container : in out List);
 234
 235    procedure Finalize (Container : in out List) renames Clear;
 236
 237    use Ada.Streams;
 238
 239    procedure Read
 240      (Stream : not null access Root_Stream_Type'Class;
 241       Item   : out List);
 242
 243    for List'Read use Read;
 244
 245    procedure Write
 246      (Stream : not null access Root_Stream_Type'Class;
 247       Item   : List);
 248
 249    for List'Write use Write;
 250
 251    type List_Access is access constant List;
 252    for List_Access'Storage_Size use 0;
 253
 254    type Cursor is
 255       record
 256          Container : List_Access;
 257          Node      : Node_Access;
 258       end record;
 259
 260    procedure Read
 261      (Stream : not null access Root_Stream_Type'Class;
 262       Item   : out Cursor);
 263
 264    for Cursor'Read use Read;
 265
 266    procedure Write
 267      (Stream : not null access Root_Stream_Type'Class;
 268       Item   : Cursor);
 269
 270    for Cursor'Write use Write;
 271
 272    Empty_List : constant List := (Controlled with null, null, 0, 0, 0);
 273
 274    No_Element : constant Cursor := Cursor'(null, null);
 275
 276 end Ada.Containers.Doubly_Linked_Lists;