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util/bitcompat.lua @ 12518:73ee3855f970
mod_smacks: Factor out some convenience functions
Those lines are long and the risk of mistakes if another one needs to be
added seems high, but lower when factored out like this.
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 11 Feb 2022 16:09:42 +0100 |
parent | 10241:48f7cda4174d |
child | 12573:0f4feaf9ca64 |
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-- 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";