int luax_convobj(lua_State *L, int idxs[], int n, const char *mod, const char *fn)
{
luax_getfunction(L, mod, fn);
for (int i = 0; i < n; i++)
{
lua_pushvalue(L, idxs[i]); // The arguments.
}
lua_call(L, n, 2); // Call the function, n args, one return value (plus optional errstring.)
luax_assert_nilerror(L, -2); // Make sure the function returned something.
lua_pop(L, 1); // Pop the second return value now that we don't need it.
lua_replace(L, idxs[0]); // Replace the initial argument with the new object.
return 0;
}
int luax_convobj(lua_State *L, int idx, const char *mod, const char *fn)
{
// Convert to absolute index if necessary.
if (idx < 0 && idx > LUA_REGISTRYINDEX)
idx += lua_gettop(L) + 1;
// Convert string to a file.
luax_getfunction(L, mod, fn);
lua_pushvalue(L, idx); // The initial argument.
lua_call(L, 1, 2); // Call the function, one arg, one return value (plus optional errstring.)
luax_assert_nilerror(L, -2); // Make sure the function returned something.
lua_pop(L, 1); // Pop the second return value now that we don't need it.
lua_replace(L, idx); // Replace the initial argument with the new object.
return 0;
}