class IDL::Delegator

def declare_port(name, porttype, type, multiple = false)
  params = {}
  params[:porttype] = porttype
  params[:type] = type
  params[:multiple] = multiple
  params[:annotations] = @annotation_stack
  @annotation_stack = IDL::AST::Annotations.new
  set_last(@cur.define(IDL::AST::Port, name, params))
  @cur
end