[cfe-dev] Obtaining file name for functions from included files

[Manuel Klimek]

On Tue, Jun 19, 2012 at 3:22 PM, Felix Schmitt <
felix.schmitt at zih.tu-dresden.de> wrote:

> Manuel Klimek <klimek at ...> writes:
>
> >
> > On Tue, Jun 19, 2012 at 2:34 PM, Felix Schmitt
> <felix.schmitt <at> zih.tu-dresden.de> wrote:
> > Hi,
> > I got the following problem:
> > I need to traverse the AST (currently using
> RecursiveASTVisitor) and get the
> > file name for every function declaration.
> > Currently, I only get the filename for function
> declarations in my main file but
> > how do I get these for functions in #included files?
> > My relevant code looks like this (srcMgr is the
> SourceManager):
> > bool CMyASTVisitor::VisitFunctionDecl(FunctionDecl*
> decl)
> > {
> > ...
> > const FileEntry* file_entry =
> > srcMgr.getFileEntryForID(srcMgr.getFileID(decl-
> >getLocStart()));
> > if (file_entry == NULL)
> >    std::cout << "no file entry" << std::endl;
> > ...
> > }
> > Is there a way to get these filenames?
> >
> >
> > Why does file_entry->getName() not work?
> >
>
> Because file_entry is NULL if the declaration found is
> not in
> the main file but from an included file in the main file.
>

That's news to me - the only place where I've found file_entry to be NULL
is for token-pasted code, for example from macro expansions.

Cheers,
/Manuel


>
> Felix
>
> > Cheers,
> > /Manuel
> >
> >
> >
> >
> > Regards,
> > Felix
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