Compatibility with Boost.Bind/Boost.Phoenix

[Flamefire]

Currently it seems to be impossible to use Boost.Bind/Boost.Phoenix with kaguya. But those are required to use lambdas before C++11.

My sample usage is:

#include <boost/bind.hpp>
std::string LuaInterfaceBase::Translate(const std::string& key){...}
lua["_"] = kaguya::function(boost::bind(&LuaInterfaceBase::Translate, this, _1));

#include <boost/phoenix.hpp>
std::string LuaInterfaceBase::Translate(const std::string& key){...}
lua["_"] = kaguya::function(boost::phoenix::bind(&LuaInterfaceBase::Translate, this, boost::phoenix::placeholders::arg1));

I get the following errors:

contrib\kaguya\include\kaguya/native_function.hpp(70): error C2027: Verwendung des undefinierten Typs "kaguya::util::FunctionSignature<T,void>" with [ T=boost::_bi::bind_t<std::string,boost::_mfi::mf1<std::string,LuaInterfaceBase,const std::string &>,boost::_bi::list2<boost::_bi::value<LuaInterfaceBase >,boost::arg<1>>> ] contrib\kaguya\include\kaguya/native_function.hpp(70): note: Siehe Deklaration von "kaguya::util::FunctionSignature<T,void>" with [ T=boost::_bi::bind_t<std::string,boost::_mfi::mf1<std::string,LuaInterfaceBase,const std::string &>,boost::_bi::list2<boost::_bi::value<LuaInterfaceBase >,boost::arg<1>>> ] contrib\kaguya\include\kaguya/native_function.hpp(619): note: Siehe Verweis auf die Instanziierung der gerade kompilierten Klassen-template "kaguya::nativefunction::is_callable<boost::_bi::bind_t<std::string,boost::_mfi::mf1<std::string,LuaInterfaceBase,const std::string &>,boost::_bi::list2<boost::_bi::value,boost::arg<1>>>,void>". with [ T=LuaInterfaceBase ] src\lua\LuaInterfaceBase.cpp(65): note: Siehe Verweis auf die Instanziierung der gerade kompilierten Funktions-template "kaguya::FunctionInvokerType<std::tuple<boost::_bi::bind_t<std::string,boost::_mfi::mf1<std::string,LuaInterfaceBase,const std::string &>,boost::_bi::list2<boost::_bi::value,boost::arg<1>>>>> kaguya::function<boost::_bi::bind_t<std::string,boost::_mfi::mf1<std::string,LuaInterfaceBase,const std::string &>,boost::_bi::list2<boost::_bi::value,boost::arg<1>>>>(boost::_bi::bind_t<std::string,boost::_mfi::mf1<std::string,LuaInterfaceBase,const std::string &>,boost::_bi::list2<boost::_bi::value,boost::arg<1>>>)". with [ T=LuaInterfaceBase ] contrib\kaguya\include\kaguya/native_function.hpp(70): error C2146: Syntaxfehler: Fehlendes ">" vor Bezeichner "type"

Boost.Phoenix

contrib\kaguya\include\kaguya/nativefunction.hpp(70): error C2027: Verwendung des undefinierten Typs "kaguya::util::FunctionSignature<T,void>" with [ T=boost::phoenix::actor<boost::proto::exprns::basic_expr<boost::phoenix::detail::tag::functioneval,boost::proto::argsns::list3<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::detail::member_function_ptr<1,std::string,std::string (_thiscall LuaInterfaceBase::* )(const std::string &)>>,0>,boost::proto::exprns::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns::term<LuaInterfaceBase *>,0>,boost::phoenix::actor<boost::proto::exprns::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::argument<1>>,0>>>,3>> ] contrib\kaguya\include\kaguya/nativefunction.hpp(70): note: Siehe Deklaration von "kaguya::util::FunctionSignature<T,void>" with [ T=boost::phoenix::actor<boost::proto::exprns::basic_expr<boost::phoenix::detail::tag::functioneval,boost::proto::argsns::list3<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::detail::member_function_ptr<1,std::string,std::string (thiscall LuaInterfaceBase:: )(const std::string &)>>,0>,boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<LuaInterfaceBase >,0>,boost::phoenix::actor<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::argument<1>>,0>>>,3>> ] contrib\kaguya\include\kaguya/native_function.hpp(619): note: Siehe Verweis auf die Instanziierung der gerade kompilierten Klassen-template "kaguya::nativefunction::iscallable<boost::phoenix::actor<boost::proto::exprns::basic_expr<Tag,Args,3>>,void>". with [ Tag=boost::phoenix::detail::tag::functioneval, Args=boost::proto::argsns::list3<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::detail::member_function_ptr<1,std::string,std::string (thiscall LuaInterfaceBase:: )(const std::string &)>>,0>,boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<LuaInterfaceBase >,0>,boost::phoenix::actor<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns::term<boost::phoenix::argument<1>>,0>>> ] src\lua\LuaInterfaceBase.cpp(66): note: Siehe Verweis auf die Instanziierung der gerade kompilierten Funktions-template "kaguya::FunctionInvokerType<std::tuple<boost::phoenix::actor<boost::proto::exprns::basicexpr<Tag,Args,3>>>> kaguya::function<boost::phoenix::actor<boost::proto::exprns::basic_expr<Tag,Args,3>>>(T)". with [ Tag=boost::phoenix::detail::tag::functioneval, Args=boost::proto::argsns::list3<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::detail::member_function_ptr<1,std::string,std::string (thiscall LuaInterfaceBase:: )(const std::string &)>>,0>,boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<LuaInterfaceBase >,0>,boost::phoenix::actor<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns::term<boost::phoenix::argument<1>>,0>>>, T=boost::phoenix::actor<boost::proto::exprns::basic_expr<boost::phoenix::detail::tag::functioneval,boost::proto::argsns::list3<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::detail::member_function_ptr<1,std::string,std::string (thiscall LuaInterfaceBase:: )(const std::string &)>>,0>,boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<LuaInterfaceBase >,0>,boost::phoenix::actor<boost::proto::exprns_::basicexpr<boost::proto::tagns::tag::terminal,boost::proto::argsns_::term<boost::phoenix::argument<1>>,0>>>,3>> ] contrib\kaguya\include\kaguya/native_function.hpp(70): error C2146: Syntaxfehler: Fehlendes ">" vor Bezeichner "type"

[OvermindDL1]

That seems odd. Boost.Bind and Boost.Phoenix just create bog-standard Function Objects (just like the C++11+ std::function supports). Does kaguya's function wrapper not support that? If not it should switch to boost::function (which can be embedded and re-name-spaced via one of the boost tools).

[Flamefire]

Was thinking the same, but there seems to be some more magic going on. However there is an undocumented template version of kaguya::function that takes the function signature as its first template param. Using this works.

[OvermindDL1]

param. Using this works.

Ahh, that makes sense then, function object's can have multiple overrides in the same object so it could not distinguish otherwise without an argument unifying it, which a template argument would do (which is why both boost::function and std::function require it in all cases).

[Flamefire]

Ah ok. Then this is a documentation issue.