local typeof = typeof
local isInstanceOfType = typeof(CS.System.Type).IsInstanceOfType

local function isFromCSharp(T)
  if T then
    return T.__name ~= nil or T.UnderlyingSystemType ~= nil
  end

  return false
end

local function isUserdataType(obj, T)
  if isFromCSharp(T) then
    return isInstanceOfType(typeof(T), obj)
  end
  return false
end

local config = {
  customTypeCheck = function (T)
    if isFromCSharp(T) then
      return isUserdataType
    end
  end,

  customTypeof = function (T)
    if isFromCSharp(T) then
      return typeof(T)
    end
    return nil
  end,

}


if jit then
  -- luajit table.move may causes a crash in a version, do not confirm whether the current version is fixed
  table.move = function(a1, f, e, t, a2)
    if a2 == nil then a2 = a1 end
    if t > f then
      t = e - f + t
      while e >= f do
        a2[t] = a1[e]
        t = t - 1
        e = e - 1
      end
    else
      while f <= e do
        a2[t] = a1[f]
        t = t + 1
        f = f + 1
      end
    end
  end
end

require("CSharpLua.All")("CSharpLua", config)