[cfe-dev] How to get values from AttributeList

[LUIS MIGUEL SANCHEZ GARCIA]

Hi Aaron,

I included two integers in attr.td file for this attribute declaration. I
included the numbers by hand in the object creation
(I wrote a handler in SemaDeclAttr.cpp file)
and works, but I obtain error when I try to get the values form the
attribute list.

Do you have any hint?

Thanks!
Luis.
El 17/04/2015 17:23, "Aaron Ballman" <aaron at aaronballman.com> escribió:

> On Fri, Apr 17, 2015 at 11:05 AM, LUIS MIGUEL SANCHEZ GARCIA
> <luismiguel.sanchez at uc3m.es> wrote:
> > I would like to parser the values of a C++ attribute in clang, but I
> don't
> > know how to get the information from the AttributeList class.
> >
> >
> > For example, is it better to use?
> >
> >    IdentifierLoc *Value1 = A.getArgAsIdent(0);
> >    IdentifierLoc *Value2 = A.getArgAsIdent(1);
> >
> >    or
> >
> >   Expr *Value1 = A.getArgAsExpr(0);
> >   Expr *Value2 = A.getArgAsExpr(1);
> >
> > And later?
>
> A good place to look is SemaDeclAttr.cpp; that's where parsed
> attributes are converted into semantic attributes that attach to
> declarations. (SemaStmtAttr.cpp is where you'd go for statement
> attributes; type attributes are a bit more involved and live in
> SemaType.cpp).
>
> As for whether you would be using getArgAsIdent or getArgAsExpr, that
> depends entirely on the declaration of your attribute in Attr.td
> (specifically, what kind of arguments it takes). Attributes that take
> an IdentifierArgument, EnumArgument, or VariadicEnumArgument all use
> getArgAsIdent().
>
> HTH!
>
> ~Aaron
>
> >
> > Thanks!
> >
> > Best regards,
> > Luis.
> > --
> > --
> > --
> > --------------------------------------------------
> > Luis Miguel Sánchez García
> > Computer Architecture and Technology Area.
> > Office 2.2.B08
> > Computer Science Department. UNIVERSIDAD CARLOS III DE MADRID
> > Universidad Carlos III de Madrid
> > Avda. de la Universidad, 30
> > 28911 Leganés - Madrid - Spain
> > e-mail: lmsan at arcos.inf.uc3m.es
> >         luismiguel.sanchez at uc3m.es
> >
> > Phone: (+34) 91 624 5951
> >
> > Linked-In: http://es.linkedin.com/in/lmsan
> > Twitter: http://twitter.com/lmsanchezgarcia
> > --------------------------------------------------
> >
> > _______________________________________________
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> > cfe-dev at cs.uiuc.edu
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> >
>
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