Is there an HDDL parser?

[famishedrover]

Hi,
I was wondering if there is an HDDL parser for HTNs in python? or whether this pddl-lib can be extended to HDDL?

[hfoffani]

Sorry, I didn't even know about the language. I've just downloaded the Höller, et al. paper.
Thanks for pointing out.
I haven't done anything with this project since a long time. It's a shame, I recon.
Without noticing I've been slowly moving out from the field and losing contact.

[famishedrover]

I'm not experienced in writing a parser, but it seems that we may find some help from the pyhipop [code] that uses HDDL files to construct HTN plans and I suppose must be parsing. They are internally using pddl pypi library. There are other planners that also support HDDL files but I don't think they are python based. (or if the parsing is python based.)

Even in pyHiPop the parsing is antrl4 based (java).

[hfoffani]

Thanks, I'll take a look at the paper.
Yes, antlr4 is powerful and very convenient to write grammars.

[hfoffani]

HDDL is a distinct formalism (HTN: tasks, methods, decomposition) rather than an extension of the current PDDL object model. Scoping it to a future 3.0 milestone — out of scope for 1.0 and 2.0. Keeping this open as the tracking issue.