Calling overloaded original functions
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- Subject: Calling overloaded original functions
- From: Till Harbaum / Lists <lists@...>
- Date: Thu, 8 May 2008 21:31:15 +0100
Hi list,
i am trying to extend the tostring function to do something special
for my own special use tables. I found some example using the syntax
below:
function tostring(a)
-- do something for special tables ...
-- otherwise call original function:
return %tostring(a)
end
But this gives me an error for the % character. Omiting the % results in an
endless loop for obvious reasons ...
How is this done? And perhaps someone even knows how to do this from
a c function?
lua_pushcfunction(L, my_tostring);
lua_setfield(L, LUA_GLOBALSINDEX, "tostring");
Overwrites tostring, but how do i call the original function from my "my_tostring"?
I tried "lua_pushstring(L, lua_tostring(L, -1));", but this only works for strings and
numerical values, but not for e.g. tables.
Thanks,
Till
BTW: The forum is down. Otherwise i would have tried to search there ...