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/src/lib/storage/dictionary/avl_dictionary.e

http://github.com/tybor/Liberty
Specman e | 49 lines | 15 code | 5 blank | 29 comment | 0 complexity | 8a2c450066f68ad90cd5bf8b3af7da06 MD5 | raw file
 1-- This file is part of a Liberty Eiffel library.
 2-- See the full copyright at the end.
 3--
 4class AVL_DICTIONARY[V_, K_ -> COMPARABLE]
 5   --
 6   -- Associative memory. Values of type `V_' are stored using Keys of type `K_'.
 7   --
 8   -- Efficient implementation of DICTIONARY using an AVL balanced tree. AVL stands for the names of G. M. Adel'son-Velskii
 9   -- and E. M. Landis, two Russian mathematicians who first came up with this method of keeping the tree balanced.
10   --
11
12inherit
13   ABSTRACT_AVL_DICTIONARY[V_, K_]
14
15create {ANY}
16   make, manifest_creation, default_create
17
18feature {}
19   ordered (k1, k2: K_): BOOLEAN
20      do
21         Result := k1 < k2
22      end
23
24   a_new_node: AVL_DICTIONARY_NODE[V_, K_]
25      do
26         create Result
27      end
28
29end -- class AVL_DICTIONARY
30--
31-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file.
32--
33-- Permission is hereby granted, free of charge, to any person obtaining a copy
34-- of this software and associated documentation files (the "Software"), to deal
35-- in the Software without restriction, including without limitation the rights
36-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
37-- copies of the Software, and to permit persons to whom the Software is
38-- furnished to do so, subject to the following conditions:
39--
40-- The above copyright notice and this permission notice shall be included in
41-- all copies or substantial portions of the Software.
42--
43-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
44-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
45-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
46-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
47-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
48-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
49-- THE SOFTWARE.