[swift-dev] Question about dump-ast and logging the output to file

Marcel Rebou├žas mscreboucas at gmail.com
Sun Aug 28 20:36:21 CDT 2016

Hello Dmitri,

Thank you for your answer. Although I didn't tell, I was already able to
generate the output of the astdumper to a file (without using the flag,
just reusing the AstDumper class) when building through Xcode. I understand
that the output is irregular, but I plan to eventually modify the dumper
according to my needs to make the output usable.

Also, I will take a deeper look at SourceKit. It seems to be the correct
way to do it. Thank you very much for the tip.


Em domingo, 28 de agosto de 2016, Dmitri Gribenko <gribozavr at gmail.com>

> On Wed, Aug 24, 2016 at 10:27 AM, Marcel Rebou├žas <swift-dev at swift.org
> <javascript:;>> wrote:
> > Hello everybody,
> >
> > I am planning in doing some research and analysis with the ASTs of swift
> > programs and, for that reason, I am trying to modify the compiler to
> always
> > generate a file with the contents of the -dump-ast flag when building a
> > project.
> Hi Marcel,
> dump-ast format is not machine-parseable.  It was never designed to be
> such (so it is irregular), and it will change in incompatible ways in
> future.  And of course '-dump-ast' is not a publicly documented
> compiler flag, so it can go away at any point, for example, it can be
> removed from compilers built as public releases to save code size.
> If you want to (eventually) use your tool in a production environment,
> you should consider building your tool on top of SourceKit, possibly
> extending SourceKit along the way.
> Dmitri
> --
> main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
> (j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com
> <javascript:;>>*/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-dev/attachments/20160828/de410204/attachment.html>

More information about the swift-dev mailing list