test/hotspot/gtest/metaprogramming/test_conditional.cpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#include "precompiled.hpp"
#include "memory/allocation.hpp"
#include "metaprogramming/conditional.hpp"
#include "metaprogramming/isSame.hpp"
#include "utilities/debug.hpp"

class ConditionalTest {
  class A: AllStatic {};
  class B: AllStatic {};

  typedef Conditional<true, A, B>::type A_B_if_true;
  static const bool A_B_if_true_is_A = IsSame<A_B_if_true, A>::value;
  static const bool A_B_if_true_is_B = IsSame<A_B_if_true, B>::value;
  STATIC_ASSERT(A_B_if_true_is_A);
  STATIC_ASSERT(!A_B_if_true_is_B);

  typedef Conditional<false, A, B>::type A_B_if_false;
  static const bool A_B_if_false_is_A = IsSame<A_B_if_false, A>::value;
  static const bool A_B_if_false_is_B = IsSame<A_B_if_false, B>::value;
  STATIC_ASSERT(!A_B_if_false_is_A);
  STATIC_ASSERT(A_B_if_false_is_B);
};