Re: [cdt-dev] Is extern parsed is ast or the indexer?

[Jan Baeyens <jan@xxxxxxxxxx>]

Nate

Thank you very much. This is exactly what I needed.

Best regards

Jantje

PS I haven't forgotten about the CDT issues. Please be patient.


Op 2/01/2017 om 23:57 schreef Nathan Ridge:
> Hi Jantje,
>
> I don't think extern "C" blocks get an ICElement, but you can discover information about them using the AST:
>
>    - Use ITranslationUnit.getAST() to get an IASTTranslationUnit
>    - Use IASTTranslationUnit.getDeclarations() to get a list of the top-level
>       declarations in the AST
>    - Loop through them and look for one that implements ICPPASTLinkageSpecification
>    - ICPPASTLinkageSpecification.getLiteral() will tell you the type of linkage, e.g. "C"
>       (I'm not actually sure whether there are other types besides "C"?)
>    - To discover start and end line numbers, use IASTNode.getFileLocation()
>       (on the ICPPASTLinkageSpecification).
>    - IASTFileLocation has methods getStartingLineNumber() and
>       getEndingLineNumber().
>
> Hope that helps!
>
> Regards,
> Nate
>
> ________________________________________
> From: cdt-dev-bounces@xxxxxxxxxxx <cdt-dev-bounces@xxxxxxxxxxx> on behalf of Jan Baeyens <jan@xxxxxxxxxx>
> Sent: January 2, 2017 8:13:50 PM
> To: CDT General developers list.
> Subject: [cdt-dev] Is extern parsed is ast or the indexer?
>
> Hi
>
> For my delayed V4 release I'm trying to fix a known limitation in
> Sloeber and to do so I'd like to find the ICElement of the extern bloks.
> I have the ITranslationUnit tu of the file.
> When I try tu.getElement("extern"); I get a null back.
> I tried some alternatives but I always get null.
>
> I'm sure I have the correct tu as the following code works
>
> String fileContent = new String(tu.getContents());
>      if (fileContent.contains("extern \"C\"")) {
>
> I looked for a type that could match but IMHO nothing seems to match.
>
> I'd like to find out where the extern "C" { XXXXX} blok starts and stops.
> Line level is ok.
>
> I can do it with string parsing but it would be far more convenient if I
> could use getSourceRange.
>
> So my question is: is extern parsed by the indexer and if so what type
> is it.
> I could find out myself is there is a way to dump the index/ast in a
> readable format.
>
>
> Thanks and best wishes for 2017
>
> Jantje
>
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