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author | Kim Alvefur <zash@zash.se> | 2019-11-16 16:52:31 +0100 |
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committer | Kim Alvefur <zash@zash.se> | 2019-11-16 16:52:31 +0100 |
commit | 908f5b61c55e4cba39e61ac415b0fca384a1095d (patch) | |
tree | 6e391ff6608608f181e42c92ee6dfd7c534da255 /util/bitcompat.lua | |
parent | c4c38d2f01d5f2711b527c7c2412250ed6c58738 (diff) | |
parent | fd9ccf20d5b652dbad1f37cecd540661f4642ee6 (diff) | |
download | prosody-908f5b61c55e4cba39e61ac415b0fca384a1095d.tar.gz prosody-908f5b61c55e4cba39e61ac415b0fca384a1095d.zip |
Merge 0.11->trunk
Diffstat (limited to 'util/bitcompat.lua')
-rw-r--r-- | util/bitcompat.lua | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/util/bitcompat.lua b/util/bitcompat.lua new file mode 100644 index 00000000..454181af --- /dev/null +++ b/util/bitcompat.lua @@ -0,0 +1,32 @@ +-- 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"; |