test/hotspot/gtest/metaprogramming/test_enableIf.cpp
changeset 47216 71c04702a3d5
parent 46649 439ffb1e05ec
equal deleted inserted replaced
47215:4ebc2e2fb97c 47216:71c04702a3d5
       
     1 /*
       
     2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.
       
     8  *
       
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    12  * version 2 for more details (a copy is included in the LICENSE file that
       
    13  * accompanied this code).
       
    14  *
       
    15  * You should have received a copy of the GNU General Public License version
       
    16  * 2 along with this work; if not, write to the Free Software Foundation,
       
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    18  *
       
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
       
    20  * or visit www.oracle.com if you need additional information or have any
       
    21  * questions.
       
    22  *
       
    23  */
       
    24 
       
    25 #include "precompiled.hpp"
       
    26 #include "memory/allocation.hpp"
       
    27 #include "metaprogramming/enableIf.hpp"
       
    28 #include "utilities/debug.hpp"
       
    29 
       
    30 class EnableIfTest {
       
    31   class A: AllStatic {
       
    32   public:
       
    33     template <bool condition>
       
    34     static typename EnableIf<condition, char>::type test();
       
    35     template <bool condition>
       
    36     static typename EnableIf<!condition, long>::type test();
       
    37   };
       
    38 
       
    39   static const bool A_test_true_is_char = sizeof(A::test<true>()) == sizeof(char);
       
    40   STATIC_ASSERT(A_test_true_is_char);
       
    41 
       
    42   static const bool A_test_false_is_long = sizeof(A::test<false>()) == sizeof(long);
       
    43   STATIC_ASSERT(A_test_false_is_long);
       
    44 };