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Avoid __pairs metamethod in stdnse.keys

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This allows stdnse.keys to be used in a __pairs metamethod to, for
instance, yield keys in sorted order. Using next() bypasses the __pairs
metamethod that would be called when pairs() was used. Otherwise,
infinite recursion was possible.
This commit is contained in:
dmiller
2014-09-23 05:23:06 +00:00
parent 4312ef5133
commit 379759d539
1 changed files with 3 additions and 1 deletions
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4
nselib/stdnse.lua
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@@ -1416,8 +1416,10 @@ end
-- @return A table of keys -- @return A table of keys
function keys(t) function keys(t)
local ret = {} local ret = {}
for k, _ in pairs(t) do local k, v = next(t)
while k do
ret[#ret+1] = k ret[#ret+1] = k
k, v = next(t, k)
end end
return ret return ret
end end