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  1. PO
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    <p>you can do stuff like this with the debug library... something like this does what you seem to be looking for:</p> <pre><code>function a_func(arg1, asdf) -- if this function doesn't use an argument... it shows up as (*temporary) in -- calls to debug.getlocal() because they aren't used... if arg1 == "10" then end if asdf == 99 then end -- does stuff with arg1 and asdf? end -- just a function to dump variables in a user-readable format function myUnpack(tbl) if type(tbl) ~= "table" then return "" end local ret = "" for k,v in pairs(tbl) do if tostring(v) ~= "" then ret = ret.. tostring(k).. "=".. tostring(v).. ", " end end return string.gsub(ret, ", $", "") end function hook() -- passing 2 to to debug.getinfo means 'give me info on the function that spawned -- this call to this function'. level 1 is the C function that called the hook. local info = debug.getinfo(2) if info ~= nil and info.what == "Lua" then local i, variables = 1, {""} -- now run through all the local variables at this level of the lua stack while true do local name, value = debug.getlocal(2, i) if name == nil then break end -- this just skips unused variables if name ~= "(*temporary)" then variables[tostring(name)] = value end i = i + 1 end -- this is what dumps info about a function thats been called print((info.name or "unknown").. "(".. myUnpack(variables).. ")") end end -- tell the debug library to call lua function 'hook 'every time a function call -- is made... debug.sethook(hook, "c") -- call a function to try it out... a_func("some string", 2012) </code></pre> <p>this results in the output:</p> <pre><code>a_func(asdf=2012, arg1=some string) </code></pre> <p>you can do fancier stuff to pretty this up, but this basically covers how to do what you're asking.</p>
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    1. POGet name of argument of function in lua
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    1. USMike Corcoran
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    1. COYou misread the original post. He is looking to determine the name of the variables in their scope outside the function (see his current work-around), not the name used by the function for its parameters. In other words, he is not looking to determine "asdf" and "arg1", but "a" and "b" if the caller executed a_func(a, b).
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      1. USNathan Wiebe
    2. COahh, gotcha. that might be possible if you attempt to walk up the stack to try to figure out what locals are in scope with matching values to what was passed to the called function. seems like an awful lot of work for a demo, though...
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      1. USMike Corcoran
    3. COI'll up-vote it if you post it... :)
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      1. USNathan Wiebe
 

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