Re: [luabind] Using raw policy with the property command

[Marcus S. <mar...@ho...>]

I found a way of using the raw policy with a property, maybe not the "best" way of doing it but it works
in detail/property.hpp add
template<class R, class C, class T, class Policies>
int get(R(C::*f)(lua_State *) const, T* obj, lua_State* L, Policies* policies) 
{ 
return returns<R>::call(f, obj, L, policies); 
}
 
template<class R, class T, class U, class Policies>
int get(R(*f)(T, lua_State *), U* obj, lua_State* L, Policies* policies) 
{ 
return returns<R>::call(f, obj, L, policies); 
}
 
this will then enable
std::string Class::GetName(lua_State *);
.property("name", &Class::GetName, raw(_2))
and 
std::string GetName(lua_State *);
.property("name", &GetName, raw(_1))
 
Marcus Speight




Date: Mon, 22 Sep 2008 15:29:29 -0700From: dpo...@ar...To: lua...@li...Subject: [luabind] Using raw policy with the property command



I want to use the raw policy with a property as follows:
 
static luabind::object GetChildren(const MyClass *c, lua_State *L){
luabind::object result = luabind::newtable(L);
 
…
return result;}
 
class_<MyClass>(“MyClass”)
                .property(“children”, &GetChildren, raw(_2))
 
 
 
Unfortunately this gives me a compiler error:
 
1>U:\External\Release\Luabind\luabind/detail/property.hpp(73) : error C2784: 'int luabind::detail::get(R (__cdecl *)(T),U *,lua_State *,Policies *)' : could not deduce template argument for 'R (__cdecl *)(T)' from 'luabind::adl::object (__cdecl *)(const MyClass *,lua_State *)'
1>        U:\External\Release\Luabind\luabind/detail/property.hpp(57) : see declaration of 'luabind::detail::get'
1>        U:\External\Release\Luabind\luabind/detail/property.hpp(69) : while compiling class template member function 'int luabind::detail::get_caller<T,F,Policies>::operator ()(lua_State *,int,F)'
1>        with
1>        [
1>            T=MyClass,
1>            F=luabind::adl::object (__cdecl *)(const MyClass *,lua_State *),
1>            Policies=luabind::detail::policy_cons<luabind::detail::raw_policy<2>,luabind::detail::null_type>
1>        ]
1>        U:\External\Release\Luabind\luabind/class.hpp(1186) : see reference to class template instantiation 'luabind::detail::get_caller<T,F,Policies>' being compiled
1>        with
1>        [
1>            T=MyClass,
1>            F=luabind::adl::object (__cdecl *)(const MyClass *,lua_State *),
1>            Policies=luabind::detail::policy_cons<luabind::detail::raw_policy<2>,luabind::detail::null_type>
1>        ]
1>        U:\External\Release\Luabind\luabind/class.hpp(919) : see reference to function template instantiation 'luabind::class_<T> &luabind::class_<T>::property_impl<luabind::adl::object(__cdecl *)(const MyClass *,lua_State *),MaybeSetter>(const char *,Getter,GetPolicies,boost::mpl::bool_<C_>)' being compiled
1>        with
1>        [
1>            T=MyClass,
1>            MaybeSetter=luabind::detail::policy_cons<luabind::detail::raw_policy<2>,luabind::detail::null_type>,
1>            Getter=luabind::adl::object (__cdecl *)(const MyClass *,lua_State *),
1>            GetPolicies=luabind::detail::policy_cons<luabind::detail::raw_policy<2>,luabind::detail::null_type>,
1>            C_=true
1>        ]
1>        .\LQS_ObjectWidget.cpp(219) : see reference to function template instantiation 'luabind::class_<T> &luabind::class_<T>::property<luabind::adl::object(__cdecl *)(const MyClass *,lua_State *),luabind::detail::policy_cons<H,luabind::detail::null_type>>(const char *,Getter,MaybeSetter)' being compiled
1>        with
1>        [
1>            T=MyClass,
1>            H=luabind::detail::raw_policy<2>,
1>            Getter=luabind::adl::object (__cdecl *)(const MyClass *,lua_State *),
1>            MaybeSetter=luabind::detail::policy_cons<luabind::detail::raw_policy<2>,luabind::detail::null_type>
1>        ]
1>U:\External\Release\Luabind\luabind/detail/property.hpp(73) : error C2784: 'int luabind::detail::get(R (__thiscall C::* )(void) const,T *,lua_State *,Policies *)' : could not deduce template argument for 'R (__thiscall C::* )(void) const' from 'luabind::adl::object (__cdecl *)(const MyClass *,lua_State *)'
1>        U:\External\Release\Luabind\luabind/detail/property.hpp(51) : see declaration of 'luabind::detail::get'
 
Any notion what might be causing this?Thanks,
Dan.
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