feat: support lua 5.3

wireshark/thrift.lua

@@ -13,6 +13,32 @@
 -- limitations under the License.
 
 -------------------------------------------------------------------------------
+--- utils
+bit32 = {}
+function bit32.band(a, b)
+    return a & b
+end
+function bit32.bor(a, b)
+    return a | b
+end
+function bit32.bxor(a, b)
+    return a ~ b
+end
+function bit32.lshift(a, n)
+    return a << n
+end
+function bit32.rshift(a, n)
+    return a >> n
+end
+function bit32.btest(...)
+  local args = {...}
+  local result = args[1]
+  for i = 2, #args do
+    result = result & args[i]
+  end
+  return result ~= 0
+end
+
 --- protocols
 local ttheader_protocol = Proto("ttheader", "Thrift TTHeader Protocol")
 local tbinary_protocol = Proto("tbinary", "Thrift UnframedBinary Protocol")