On Sunday, 3 November 2013 at 01:45:23 UTC, Timothee Cour wrote:
1)
The main issue I see with pegged is PEG grammars don't support
left
recursion, so for example will fail on foo[1].bar(2).fun().
Unless there's a plan to accomodate those, I sense a dead end.
One can eliminate left recursion but this has issues.
2)
There is some material on extending PEG to support those, eg
"Left
Recursion in Parsing Expression Grammars", or code
https://github.com/orlandohill/peg-left-recursion but I don't
know how well
they work in practice.
Left-recursion for Pegged is in the works:
https://github.com/PhilippeSigaud/Pegged/pull/164
:-)
