opImplConv to bool doesn't work in a ternary operator condition

Sam V · 2022-10-10T18:56:34

When using opImplConv to bool and then checking an instance of the type in a ternary operator condition a compiler error is given: Expression must be of boolean type It does work when used in an if statement, so this seems like an oversight. Registration code: class Scheduler { public: struct ScheduledFunction {}; struct ScheduledFunctionHandle { ScheduledFunction* Function{}; std::chrono::system_clock::time_point CreationTime{}; }; }; static void ConstructScheduledFunctionHandle(void* memory) { new (memory) Scheduler::ScheduledFunctionHandle(); } static void DestructScheduledFunctionHandle(Scheduler::ScheduledFunctionHandle* handle) { handle->~ScheduledFunctionHandle(); } static void CopyConstructScheduledFunctionHandle(void* memory, const Scheduler::ScheduledFunctionHandle& other) { new (memory) Scheduler::ScheduledFunctionHandle(other); } static bool ScheduledFunction_opImplConv(const Scheduler::ScheduledFunctionHandle* handle) { return handle->Function != nullptr; } static void RegisterScheduledFunction(asIScriptEngine& engine) { const char* const name = "ScheduledFunction"; engine.RegisterObjectType(name, sizeof(Scheduler::ScheduledFunctionHandle), asOBJ_VALUE | asGetTypeTraits<Scheduler::ScheduledFunctionHandle>()); engine.RegisterObjectBehaviour(name, asBEHAVE_CONSTRUCT, "void f()", asFUNCTION(ConstructScheduledFunctionHandle), asCALL_CDECL_OBJFIRST); engine.RegisterObjectBehaviour(name, asBEHAVE_DESTRUCT, "void f()", asFUNCTION(DestructScheduledFunctionHandle), asCALL_CDECL_OBJFIRST); engine.RegisterObjectBehaviour(name, asBEHAVE_CONSTRUCT, "void f(const ScheduledFunction& in other)", asFUNCTION(CopyConstructScheduledFunctionHandle), asCALL_CDECL_OBJFIRST); engine.RegisterObjectMethod(name, "ScheduledFunction& opAssign(const ScheduledFunction& in other)", asMETHODPR(Scheduler::ScheduledFunctionHandle, operator=, (const Scheduler::ScheduledFunctionHandle&), Scheduler::ScheduledFunctionHandle&), asCALL_THISCALL); engine.RegisterObjectMethod(name, "bool opImplConv() const", asFUNCTION(ScheduledFunction_opImplConv), asCALL_CDECL_OBJFIRST); } Script code: ScheduledFunction sched; Print("Scheduled function handle is valid: " + sched ? "yes" : "no" + "\n");