require("import") -- the import fn | |
import("fvirtual") -- import lib into global | |
f=fvirtual --alias | |
-- catching undefined variables | |
local env = _ENV -- Lua 5.2 | |
if not env then env = getfenv () end -- Lua 5.1 | |
setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end}) | |
n1 = f.Node() | |
n2 = f.Node() | |
assert(n1:addChild(n2) == 1) | |
ns = f.NodeSwitch() | |
assert(ns:addChild(n2) == 2) | |
assert(ns:addChild(ns) == 2) | |
assert(ns:addChild(n1, false) == 3) |