Re: [Boost-users] [MSM] problem compiling a functor-guard using a flaginside.
while developing I want to use functors for a guard. The state machine compiles well until I added a function call to the FSM which has a template parameter. Then I always got the following error message while compiling it with gcc 4.4.1.
SubtractionControllerNew.cpp: In member function ‘bool<unnamed>::player_::isCDLoaded::operator()(const EVT&, FSM&, SourceState&, TargetState&)’: SubtractionControllerNew.cpp:175: error: expected primary-expression before ‘>’ token SubtractionControllerNew.cpp:175: error: expected primary-expression before ‘)’ token Does anybody know why this happens and how to circumvent it?
I admit C++ is sometimes full of hard-to-get rules :( Try adding a template keyword: struct isCDLoaded { template <class EVT,class FSM,class SourceState,class TargetState> bool operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& ) { //return fsm.is_contained(); // this works well return fsm.template is_flag_active<CDLoaded>(); // Line 175 } }; HTH, Christophe
Thanks, adding this template keyword as described works fine. Up to now, I have never seen this type of construct :) -----Ursprüngliche Nachricht----- Von: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] Im Auftrag von Christophe Henry Gesendet: Freitag, 8. April 2011 22:43 An: boost-users@lists.boost.org Betreff: Re: [Boost-users] [MSM] problem compiling a functor-guard using aflaginside.
while developing I want to use functors for a guard. The state machine compiles well until I added a function call to the FSM which has a template parameter. Then I always got the following error message while compiling it with gcc 4.4.1.
SubtractionControllerNew.cpp: In member function 'bool<unnamed>::player_::isCDLoaded::operator()(const EVT&, FSM&, SourceState&, TargetState&)': SubtractionControllerNew.cpp:175: error: expected primary-expression before '>' token SubtractionControllerNew.cpp:175: error: expected primary-expression before ')' token Does anybody know why this happens and how to circumvent it?
I admit C++ is sometimes full of hard-to-get rules :( Try adding a template keyword: struct isCDLoaded { template <class EVT,class FSM,class SourceState,class TargetState> bool operator()(EVT const& ,FSM& fsm,SourceState& ,TargetState& ) { //return fsm.is_contained(); // this works well return fsm.template is_flag_active<CDLoaded>(); // Line 175 } }; HTH, Christophe _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
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Christophe Henry -
Steckmann, Sven