File

+
−-- Compatibility layer for bitwise operations
+
−
+
−-- First try the bit32 lib
+
−-- Lua 5.3 has it with compat enabled
+
−-- Lua 5.2 has it by default
+
−if _G.bit32 then
+
−	return _G.bit32;
+
−else
+
−	-- Lua 5.1 may have it as a standalone module that can be installed
+
−	local ok, bitop = pcall(require, "bit32")
+
−	if ok then
+
−		return bitop;
+
−	end
+
−end
+
−
+
−do
+
−	-- Lua 5.3 and 5.4 would be able to use native infix operators
+
−	local ok, bitop = pcall(require, "util.bit53")
+
−	if ok then
+
−		return bitop;
+
−	end
+
−end
+
−
+
−do
+
−	-- Lastly, try the LuaJIT bitop library
+
−	local ok, bitop = pcall(require, "bit")
+
−	if ok then
+
−		return bitop;
+
−	end
+
−end
+
−
+
−error "No bit module found. See https://prosody.im/doc/depends#bitop";