[cfe-dev] -ast-dump-xml flag

Alp Toker alp at nuanti.com
Tue Apr 22 15:15:38 PDT 2014


On 22/04/2014 19:05, Philip Reames wrote:
> Would it be worthwhile to write a tool which uses the API and 
> generates the previous XML format?  This seems like both a useful 
> forward migration path for existing users and a nice demonstration of 
> how to use the programmatic APIs.

So, I think it's worthwhile as long as your tool does something clever 
-- like making use of a third-party XML library instead of trying to 
printf it to stdout, a luxury that wasn't available to the past efforts.

Another idea might be to do it with the Python binding -- using 
reflection it could perhaps be done in dozen lines.

(Broadly speaking though there shouldn't be a need for intermediate XML 
dumps when there are great options like libclang, libtooling with their 
own efficient serializations.)

Alp.



>
> Philip
>
> On 04/21/2014 04:41 PM, Alp Toker wrote:
>> Hi Spyros,
>>
>> XML dumping features have been removed because they were made 
>> redundant by clang's library architecture.
>>
>> The preferred way to consume AST programmatically is via libclang. 
>> You could process this and emit XML from your application if needed.
>>
>> For debugging you can also use the textual -ast-dump but be aware it 
>> may be missing bits.
>>
>> Alp.
>>
>>
>> On 22/04/2014 00:25, Spyros Hadjichristodoulou wrote:
>>> Hi all,
>>>
>>> I've been trying to get the Clang-AST from compiling a simple C 
>>> source file; the -ast-dump flag works just fine, but I'm having 
>>> trouble with the -ast-dump-xml flag. A quick google search says that 
>>> it should work when using Clang built in debug mode, but I don't 
>>> seem to be able to make it work. So my question is this; is this 
>>> flag supported in the current version of Clang? FYI, I've just built 
>>> Clang from the SVN repo source, so my version is:
>>>
>>> clang version 3.5.0 (trunk 206772)
>>> Target: x86_64-unknown-linux-gnu
>>> Thread model: posix
>>>
>>> I'm on a 64-bit ubuntu, with kernel 3.8.0-29 generic. Any help would 
>>> be mostly appreciated!
>>>
>>> Best,
>>>
>>> Spyros
>>>
>>>
>>> _______________________________________________
>>> cfe-dev mailing list
>>> cfe-dev at cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
>>
>

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