module T::Private::Methods::CallValidation

def self.create_validator_procedure_medium(mod, original_method, method_sig, original_visibility)
  # trampoline to reduce stack frame size
  if method_sig.arg_types.empty?
    create_validator_procedure_medium0(mod, original_method, method_sig, original_visibility)
  elsif method_sig.arg_types.length == 1
    create_validator_procedure_medium1(mod, original_method, method_sig, original_visibility,
                                  method_sig.arg_types[0][1])
  elsif method_sig.arg_types.length == 2
    create_validator_procedure_medium2(mod, original_method, method_sig, original_visibility,
                                  method_sig.arg_types[0][1],
                                  method_sig.arg_types[1][1])
  elsif method_sig.arg_types.length == 3
    create_validator_procedure_medium3(mod, original_method, method_sig, original_visibility,
                                  method_sig.arg_types[0][1],
                                  method_sig.arg_types[1][1],
                                  method_sig.arg_types[2][1])
  elsif method_sig.arg_types.length == 4
    create_validator_procedure_medium4(mod, original_method, method_sig, original_visibility,
                                  method_sig.arg_types[0][1],
                                  method_sig.arg_types[1][1],
                                  method_sig.arg_types[2][1],
                                  method_sig.arg_types[3][1])
  else
    raise 'should not happen'
  end
end