1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
-- Copyright (c) 2020, CZ.NIC, z.s.p.o.
-- All rights reserved.
--
-- This file is part of dnsjit.
--
-- dnsjit is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- dnsjit is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with dnsjit. If not, see <http://www.gnu.org/licenses/>.
-- dnsjit.lib.trie.node
-- Node of trie, which contains the value and key.
-- .SS Set a node's value.
-- node:set(42)
-- .SS Get a node's key and value.
-- local key = node:key()
-- local val = node:get()
module(...,package.seeall)
require("dnsjit.lib.trie_h")
local ffi = require("ffi")
local C = ffi.C
local log = require("dnsjit.core.log")
local module_log = log.new("lib.trie.node")
TrieNode = {}
-- Create a new node object.
function TrieNode.new(trie, val, key, keylen)
local self = setmetatable({
_key = key,
_keylen = keylen,
_val = val,
_trie = trie,
_log = log.new("lib.trie.node", module_log),
}, { __index = TrieNode })
return self
end
-- Return key and keylen of this node.
-- Key is string or byte array if the trie's
-- .I
-- binary
-- setting is set to true.
function TrieNode:key()
if self._trie._binary then
local key = ffi.new("uint8_t[?]", self._keylen)
ffi.copy(key, self._key, self._keylen)
return key, self._keylen
else
return ffi.string(self._key, self._keylen), self._keylen
end
end
-- Return the Log object to control logging of this instance or module.
function TrieNode:log()
if self == nil then
return module_log
end
return self._log
end
-- Get the value of this node.
function TrieNode:get()
return ffi.cast(self._trie._ctype, self._val[0])
end
-- Set the value of this node.
function TrieNode:set(value)
value = ffi.cast('void *', value)
self._val[0] = value
end
-- dnsjit.lib.trie (3)
return TrieNode
|
