mfbt/tests/TestMacroArgs.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/MacroArgs.h"
   8
   9 MOZ_STATIC_ASSERT_VALID_ARG_COUNT(1);
  10 MOZ_STATIC_ASSERT_VALID_ARG_COUNT(1, 2);
  11
  12 static_assert(MOZ_PASTE_PREFIX_AND_ARG_COUNT(100, a, b, c) == 1003, "");
  13
  14 static_assert(MOZ_PASTE_PREFIX_AND_ARG_COUNT(, a, b, c) == 3, "");
  15 static_assert(MOZ_PASTE_PREFIX_AND_ARG_COUNT(, a) == 1, "");
  16 static_assert(MOZ_PASTE_PREFIX_AND_ARG_COUNT(, !a) == 1, "");
  17 static_assert(MOZ_PASTE_PREFIX_AND_ARG_COUNT(, (a, b)) == 1, "");
  18
  19 static_assert(MOZ_PASTE_PREFIX_AND_ARG_COUNT(, MOZ_ARGS_AFTER_1(a, b, c)) == 2,
  20               "MOZ_ARGS_AFTER_1(a, b, c) should expand to 'b, c'");
  21 static_assert(MOZ_ARGS_AFTER_2(a, b, 3) == 3,
  22               "MOZ_ARGS_AFTER_2(a, b, 3) should expand to '3'");
  23
  24 static_assert(MOZ_ARG_1(10, 20, 30) == 10, "");
  25 static_assert(MOZ_ARG_2(10, 20, 30) == 20, "");
  26
  27 int
  28 main()
  29 {
  30   return 0;
  31 }