Re: [Boost-users] [serializaton] namespace issues with extended type info

Subject: Re: [Boost-users] [serializaton] namespace issues with extended type info
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2009-01-13 18:52:36

AMDG

Daniel Roberts wrote:
> If I nest macro calls such as:
>
> namespace SomeNamespace
> {
>    BOOST_SERIALIZATION_ASSUME_ABSTRACT(SomeClass)
>    BOOST_CLASS_TYPE_INFO(SomeClass, extended_type_info_no_rtti<SomeClass>)
>    BOOST_CLASS_EXPORT(SomeClass)
> }
>
> inside the namespace containing the type I get a TON of compiler 
> errors. The wackiest is that the compiler thinks boost is a namespace 
> inside of my namespace.

Both BOOST_SERIALIZATION_ASSUME_ABSTRACT and BOOST_CLASS_TYPE_INFO
specialize templates in namespace boost::serialization.  Therefore they 
need to be placed in the global
namespace.

> Things improve (not fully tested) if I move the macros outside of my 
> namespace and qualify the type with namespace name:
>
> BOOST_SERIALIZATION_ASSUME_ABSTRACT(SomeNamespace::SomeClass)
> BOOST_CLASS_TYPE_INFO(SomeNamespace::SomeClass, 
> extended_type_info_no_rtti<SomeNamespace::SomeClass>)
> BOOST_CLASS_EXPORT(SomeNamespace::SomeClass)
>
> Can someone explain please?

In Christ,
Steven Watanabe