On 2024-10-14 09:36, Janneke Nieuwenhuizen wrote:
Janneke Nieuwenhuizen writes:
From: Rutger van Beusekom <rut...@dezyne.org>
This allows production of incomplete parse trees, without errors, e.g.,
for code completion.
* module/ice-9/peg/codegen.scm (%peg:fall-back?): New exported
parameter.
(%enable-expect, %continuation, %final-continuation): New parameter.
(final-continuation): New function.
(cg-or-rest): New function.
(cg-and-int): Recover from expectation failures, fall-back by skipping
forward or escalating upward.
(cg-*): Prepare fall-back %continuation.
* test-suite/tests/peg.test ("Fall-back parser"): Test it.
* doc/ref/api-peg.texi (PEG Internals): Document it.
Co-authored-by: Janneke Nieuwenhuizen <jann...@gnu.org>
fall-back
fall-back
fallback
Oops, find cleaned-up version attached.
Hi all,
I think this change is not compatible with the PEG syntax. In PEG # is a
line comment:
https://bford.info/pub/lang/peg.pdf
I think we should take a look to what PEG/LEG does to see if they
implement the same idea and copy the syntax they use. If they do.
https://github.com/gpakosz/peg/blob/upstream/src/peg.1
I'll take a deeper look to it, the rest of the commits seem good, but
I'll also review in detail and propose something compatible with what
I'm trying to push for in #73188.
Thanks for sharing all these commits, they are very interesting and helpful.
Ekaitz
