2013年8月14日 Victor Bombi <sonoro@telefonica.net>:
If it's in the global namespace, you could write a __newindex metamethod
that keeps track of the line from which it is called.
Do you mean a metamethod for _G ?
I dont understand how to get the line, the methametod just receives
(table,
key, value)
-- file xxx.lua
local getinfo=debug.getinfo
function newindex(t,key,val)
local info=getinfo(2)
print ("setting "..key.." from line "..info.currentline..
" in file "..info.short_src)
rawset(t,key,val)
end
setmetatable(_ENV,{__newindex=newindex})
function abc()
trigger = true
end
abc()
$ lua xxx.lua
setting abc from line 12 in file xxx.lua
setting trigger from line 13 in file xxx.lua