[cfe-dev] Best way to determine if preprocessor directives live in a source range?

Gabor Kozar kozargabor at fastmail.fm
Thu May 28 02:32:47 PDT 2015

I think getting the PreprocessingRecord
from the Preprocessor would also work; a PreprocessedEntity seems to
contain source information that you can use:

Best regards,

Gábor 'ShdNx' Kozár http://gaborkozar.me

On Wed, May 27, 2015, at 18:31, Richard wrote:
> In article
> <CAOweq9+4kdBKeiKBg+SXzKs3SN-RNE7NQG7ysv4N4tsBCcWiCA at mail.gmail.com>,
> Alexander Kornienko <alexfh at google.com> writes:
>> This problem is relevant to comments as well.
>> I'm not sure if there's an easy solution, but some hand-rolled
>> options are available. One way is to re-lex the range and try to find
>> preprocessor directives (and comments) by analyzing token sequences.
>> Another approach would be to subscribe to PPCallbacks, gather all
>> locations of #if/#else/... into a set and then look up any values in
>> this set that fall between the bounds of your range.
> Yeah, I think with PPCallbacks you could build a function that would
> tell you something about preprocessor blocks based on source location.
> For comments, I thought there was something about sprinkling comment
> nodes into the AST? Isn't this how the doxygen thing works?
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