src/class.lua

   1 local class = {}
   2
   3 local instance_metatable = {
   4         __index = function(t, k)
   5                 if k == "_call" then return end
   6                 local f = rawget(t._class, k)
   7                 if type(f) == "function" then
   8                         return f
   9                 end
  10         end
  11 }
  12
  13 function class:_call(...)
  14         local o = {class = self}
  15         setmetatable(o, instance_metatable)
  16         if o.constructor then
  17                 o:constructor(table.unpack(...))
  18         end
  19 end
  20
  21 return class