[cfe-dev] Clang -ast-dump-xml question

Matthias Grimmer grimmer at ssw.jku.at
Wed Mar 6 07:44:30 PST 2013

No, the goal is definitely not to built a toy example.
We have to be able to process all real life C applications, and 
therefore serialize all information that is necessary.
Can you recommend the ASTDumper.cpp / -ast-dump as a good reference 
implementation? It seams that ASTDumper.cpp / -ast-dump does pretty much 
what we want, except from the output format.

Thanks in advance

- Matthias

On 03/06/2013 04:24 PM, Manuel Klimek wrote:
> On Wed, Mar 6, 2013 at 7:14 AM, Douglas Gregor <dgregor at apple.com 
> <mailto:dgregor at apple.com>> wrote:
>     On Mar 5, 2013, at 2:41 AM, Matthias Grimmer <grimmer at ssw.jku.at
>     <mailto:grimmer at ssw.jku.at>> wrote:
>>     Hi
>>     we are using clang and its -ast-dump-xml feature. Our goal is to
>>     convert the serialized clang-AST to a different code representation.
>>     We think that the output, that -ast-dump-xml produces, is not
>>     well suited for parsing. Statements are represented as ASCII
>>     styled trees and also contain parts that
>>     confuse XML parsers (e.g. <line:18:2, col:18>).
>     The pseudo-XML dump is a debugging aid. It's not a stable, useful
>     format on which to build tools. Tools should be built on top of
>     the Clang AST, either through libclang (for a stable but
>     not-very-rich AST representation) or the C++ AST.
> Wasn't there a plan to get rid of the XMLish dump?
> Cheers,
> /Manuel
>>     Is there a better way to get a serialized version of the clang
>>     AST (XML, or any other format that is easier to parse)?
>     No, there isn't.
>>     We would like to avoid writing a clang AST visitor for this purpose.
>     Writing a Clang AST visitor or libclang client is really the best
>     way to do this. There is no way to get sufficient information out
>     of the debugging dumps to build a tool, unless your goal is to
>     build a simple toy example that handles only a small part of C(++).
>     - Doug
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