[cfe-dev] Type of enum constants

[Phil King]

On 24 Feb 2012, at 22:50, Eli Friedman <eli.friedman at gmail.com> wrote:

> On Fri, Feb 24, 2012 at 2:35 PM, Phil King <phil_king at rocketmail.com> wrote:
>> On 24 Feb 2012, at 21:46, Eli Friedman <eli.friedman at gmail.com> wrote:
>> 
>>> On Fri, Feb 24, 2012 at 1:23 PM, Phil King <phil_king at rocketmail.com> wrote:
>>>> If I have:
>>>> 
>>>> typedef enum { E } e_t;
>>>> 
>>>> and then an expression:
>>>> 
>>>> a = E;
>>>> 
>>>> is it possible to get back to the typedef name from the DeclRefExpr node for 'E' ?
>>>> 
>>>> EnumConstantDecl * EC = dyn_cast< EnumConstantDecl >( DeclRefExpr->getDecl() );
>>>> 
>>>> QualType = AC->getASTContext().getEnumType( dyn_cast< EnumDecl >( EC->getDeclContext() ) );
>>>> 
>>>> gets me to enum { E } e_t, but not the typedef itself.
>>> 
>>> Try TagDecl::getTypedefNameForAnonDecl .
>> 
>> That does the job. Thanks.
>> 
>> How do I do the same if there is a tag name?
> 
> Are you talking about "typedef enum A { B } A;"?  If you really need
> to find the typedef in that case, I think you're stuck with traversing
> the AST to try and find it.

Yes, that's what I was after. However, for this case I can get away with knowing if I'm in a declarator, so isEmbeddedInDeclarator() will do. 

Phil