ceph/src/boost/libs/callable_traits/test/remove_transaction_safe_constraints.cpp

   1 /*
   2 Copyright Barrett Adair 2016-2017
   3
   4 Distributed under the Boost Software License, Version 1.0.
   5 (See accompanying file LICENSE.md or copy at http ://boost.org/LICENSE_1_0.txt)
   6
   7 */
   8
   9 #include <boost/callable_traits/remove_transaction_safe.hpp>
  10 #include <tuple>
  11 #include "test.hpp"
  12
  13 #ifndef BOOST_CLBL_TRTS_ENABLE_TRANSACTION_SAFE
  14 int main(){}
  15 #else
  16
  17 template<typename T>
  18 struct is_substitution_failure_remove_tx_safe {
  19
  20     template<typename>
  21     static auto test(...) -> std::true_type;
  22
  23     template<typename A,
  24         typename std::remove_reference<
  25             TRAIT(remove_transaction_safe, A)>::type* = nullptr>
  26     static auto test(int) -> std::false_type;
  27
  28     static constexpr bool value = decltype(test<T>(0))::value;
  29 };
  30
  31 struct foo;
  32
  33 int main() {
  34
  35     auto lambda = [](){};
  36
  37     CT_ASSERT(is_substitution_failure_remove_tx_safe<decltype(lambda)>::value);
  38     CT_ASSERT(is_substitution_failure_remove_tx_safe<decltype(lambda)&>::value);
  39     CT_ASSERT(is_substitution_failure_remove_tx_safe<int>::value);
  40     CT_ASSERT(is_substitution_failure_remove_tx_safe<int &>::value);
  41     CT_ASSERT(is_substitution_failure_remove_tx_safe<int (* const &)()>::value);
  42     CT_ASSERT(is_substitution_failure_remove_tx_safe<int (foo::* &)()>::value);
  43     CT_ASSERT(is_substitution_failure_remove_tx_safe<int (foo::* const)()>::value);
  44     CT_ASSERT(is_substitution_failure_remove_tx_safe<int (foo::* const &)()>::value);
  45     CT_ASSERT(is_substitution_failure_remove_tx_safe<int (foo::* volatile)()>::value);
  46     CT_ASSERT(is_substitution_failure_remove_tx_safe<void>::value);
  47     CT_ASSERT(is_substitution_failure_remove_tx_safe<void*>::value);
  48     CT_ASSERT(is_substitution_failure_remove_tx_safe<void(**)()>::value);
  49 }
  50
  51 #endif //#ifndef BOOST_CLBL_TRTS_ENABLE_TRANSACTION_SAFE