Comparison

util/bitcompat.lua @ 10411:db2a06b9ff98

Merge 0.11->trunk
author Kim Alvefur <zash@zash.se>
date Sat, 16 Nov 2019 16:52:31 +0100
parent 10241:48f7cda4174d
child 12573:0f4feaf9ca64
comparison
equal deleted inserted replaced
10410:659b577f280c 10411:db2a06b9ff98
1 -- Compatibility layer for bitwise operations
2
3 -- First try the bit32 lib
4 -- Lua 5.3 has it with compat enabled
5 -- Lua 5.2 has it by default
6 if _G.bit32 then
7 return _G.bit32;
8 else
9 -- Lua 5.1 may have it as a standalone module that can be installed
10 local ok, bitop = pcall(require, "bit32")
11 if ok then
12 return bitop;
13 end
14 end
15
16 do
17 -- Lua 5.3 and 5.4 would be able to use native infix operators
18 local ok, bitop = pcall(require, "util.bit53")
19 if ok then
20 return bitop;
21 end
22 end
23
24 do
25 -- Lastly, try the LuaJIT bitop library
26 local ok, bitop = pcall(require, "bit")
27 if ok then
28 return bitop;
29 end
30 end
31
32 error "No bit module found. See https://prosody.im/doc/depends#bitop";