1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677 |
- // comment if you want to see the boost::move issue
- #define BOOST_THREAD_VERSION 3
- #include <boost/type_traits/is_same.hpp>
- #include <boost/variant/detail/apply_visitor_binary.hpp>
- #include <boost/variant/static_visitor.hpp>
- #include <boost/variant/variant.hpp>
- #include <boost/smart_ptr/shared_ptr.hpp>
- #define WANT_BUILD_TO_FAIL
- #ifdef WANT_BUILD_TO_FAIL
- #include <boost/thread.hpp>
- #endif
- class AType
- {
- };
- class BType
- {
- };
- typedef boost::shared_ptr<AType> IATypePtr;
- typedef boost::shared_ptr<BType> IBTypePtr;
- typedef boost::variant<IATypePtr, IBTypePtr> ABVar;
- struct ServiceTimeTableEvent
- {
- public:
- ServiceTimeTableEvent(ABVar abType)
- : m_abType{ abType }
- {}
- inline ABVar const& GetABType() const { return m_abType; }
- inline ABVar & GetABType() { return m_abType; }
- private:
- ABVar m_abType;
- };
- class ab_are_equals
- : public boost::static_visitor<bool>
- {
- public:
- template<typename T, typename U>
- bool operator()(T, U) const
- {
- return false; // cannot compare different types
- }
- template<typename T>
- bool operator()(T lhs, T rhs) const
- {
- return lhs == rhs;
- }
- };
- int main(int argc, char* argv[])
- {
- auto aTypePtr = IATypePtr{ new AType };
- auto bTypePtr = IBTypePtr{ new BType };
- ABVar aType = aTypePtr;
- ABVar bType = bTypePtr;
- ServiceTimeTableEvent timeTableEvent1{ aType };
- ServiceTimeTableEvent timeTableEvent2{ bType };
- auto xx = boost::apply_visitor(ab_are_equals(), timeTableEvent1.GetABType(), timeTableEvent2.GetABType());
- xx = boost::apply_visitor(ab_are_equals(), timeTableEvent1.GetABType(), timeTableEvent1.GetABType());;
- xx = boost::apply_visitor(ab_are_equals(), timeTableEvent2.GetABType(), timeTableEvent2.GetABType());;
- }
|