private init make(v: nullable Variable, value: AExpr)
	do
		_n_id = new TId
		if v != null then _n_id.text = v.name
		_n_value = value
		value.parent = self
		_n_assign = new TAssign
		_variable = v
		_mtype = value.mtype
		if _mtype != null then _is_typed = true
	end