File : a-crbltr.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT LIBRARY COMPONENTS --
4 -- --
5 -- A D A . C O N T A I N E R S . R E D _ B L A C K _ T R E E S --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 2004-2015, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- This unit was originally developed by Matthew J Heaney. --
28 ------------------------------------------------------------------------------
29
30 -- This package declares the tree type used to implement ordered containers
31
32 with Ada.Containers.Helpers;
33
34 package Ada.Containers.Red_Black_Trees is
35 pragma Pure;
36
37 type Color_Type is (Red, Black);
38
39 generic
40 type Node_Type (<>) is limited private;
41 type Node_Access is access Node_Type;
42 package Generic_Tree_Types is
43
44 type Tree_Type is tagged record
45 First : Node_Access := null;
46 Last : Node_Access := null;
47 Root : Node_Access := null;
48 Length : Count_Type := 0;
49 TC : aliased Helpers.Tamper_Counts;
50 end record;
51
52 package Implementation is new Helpers.Generic_Implementation;
53 end Generic_Tree_Types;
54
55 generic
56 type Node_Type is private;
57 package Generic_Bounded_Tree_Types is
58 type Nodes_Type is array (Count_Type range <>) of Node_Type;
59
60 -- Note that objects of type Tree_Type are logically initialized (in the
61 -- sense that representation invariants of type are satisfied by dint of
62 -- default initialization), even without the Nodes component also having
63 -- its own initialization expression. We only initializae the Nodes
64 -- component here in order to prevent spurious compiler warnings about
65 -- the container object not being fully initialized.
66
67 type Tree_Type (Capacity : Count_Type) is tagged record
68 First : Count_Type := 0;
69 Last : Count_Type := 0;
70 Root : Count_Type := 0;
71 Length : Count_Type := 0;
72 TC : aliased Helpers.Tamper_Counts;
73 Free : Count_Type'Base := -1;
74 Nodes : Nodes_Type (1 .. Capacity) := (others => <>);
75 end record;
76
77 package Implementation is new Helpers.Generic_Implementation;
78 end Generic_Bounded_Tree_Types;
79
80 end Ada.Containers.Red_Black_Trees;