Re: [pygccxml-development] type_traits problem

[Roman Y. <rom...@gm...>]

On 5/12/06, Allen Bierbaum <al...@vr...> wrote:
> I just ran into an annoyance that I had seen before bug forgot to post.
>
> I am checking a return_type from a method to see if it is a const
> reference and the type traits are not working well.
>
> The problem is that is_const and is_reference only check the most
> external portion of a composed type.  So if you want to check if
> something is really a const ref you have do write code something like
> this (please correct me if I am wrong).
>
> ret_type =3D method.return_type
> is_ref =3D True in map(declarations.is_reference,
> declarations.decompose_type(ret_type))
> is_const =3D True in map(declarations.is_const,
> declarations.decompose_type(ret_type))
> is_const_ref =3D (is_ref and not is_const)
>
> Boost type traits and other libraries like it automatically do the
> decomposition so you could check a const reference type and it will
> return true to both is_reference and is_const.
>
> Is there any reason that we shouldn't make pygccxml work similarly?

Yes. I did not have test case for this. If you can send me test case I will=
 make
sure it works as expected.

> -Allen
>
>
> -------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job ea=
sier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronim=
o
> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> _______________________________________________
> pygccxml-development mailing list
> pyg...@li...
> https://lists.sourceforge.net/lists/listinfo/pygccxml-development
>


--=20
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/