local function _hx_anon_newindex(t,k,v) t.__fields__[k] = true; rawset(t,k,v); end
local _hx_anon_mt = {__newindex=_hx_anon_newindex}
local function _hx_a(...)
  local __fields__ = {};
  local ret = {__fields__ = __fields__};
  local max = select('#',...);
  local tab = {...};
  local cur = 1;
  while cur < max do
    local v = tab[cur];
    __fields__[v] = true;
    ret[v] = tab[cur+1];
    cur = cur + 2
  end
  return setmetatable(ret, _hx_anon_mt)
end

local function _hx_e()
  return setmetatable({__fields__ = {}}, _hx_anon_mt)
end

local function _hx_o(obj)
  return setmetatable(obj, _hx_anon_mt)
end

local function _hx_new(prototype)
  return setmetatable({__fields__ = {}}, {__newindex=_hx_anon_newindex, __index=prototype})
end