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util/bitcompat.lua

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util/bitcompat.lua @ 11710:26a8cc9d9eb7

net.resolvers.service: Only do DANE with secure SRV records If this seems backwards, that' because it is but the API isn't really designed to easily pass along details from each resolution step onto the next.
author Kim Alvefur <zash@zash.se>
date Sun, 18 Jul 2021 23:25:45 +0200
parent 10241:48f7cda4174d
child 12573:0f4feaf9ca64
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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10241
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
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1 -- Compatibility layer for bitwise operations
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2
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
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3 -- First try the bit32 lib
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4 -- Lua 5.3 has it with compat enabled
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5 -- Lua 5.2 has it by default
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
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6 if _G.bit32 then
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7 return _G.bit32;
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8 else
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9 -- Lua 5.1 may have it as a standalone module that can be installed
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10 local ok, bitop = pcall(require, "bit32")
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11 if ok then
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12 return bitop;
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13 end
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14 end
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15
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16 do
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17 -- Lua 5.3 and 5.4 would be able to use native infix operators
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18 local ok, bitop = pcall(require, "util.bit53")
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19 if ok then
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20 return bitop;
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21 end
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22 end
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23
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24 do
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25 -- Lastly, try the LuaJIT bitop library
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26 local ok, bitop = pcall(require, "bit")
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27 if ok then
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28 return bitop;
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29 end
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30 end
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31
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
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32 error "No bit module found. See https://prosody.im/doc/depends#bitop";