1 files changed, 84 insertions, 0 deletions
diff --git a/include/dnsjit/lib/trie/node.lua b/include/dnsjit/lib/trie/node.lua
new file mode 100644
index 0000000..7fdc39d
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+++ b/include/dnsjit/lib/trie/node.lua
@@ -0,0 +1,84 @@
+-- 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