e55a0e971b
Fix 'gather' rules in the python parser generator (GH-22021)
...
Currently, empty sequences in gather rules make the conditional for
gather rules fail as empty sequences evaluate as "False". We need to
explicitly check for "None" (the failure condition) to avoid false
negatives.
2020-09-03 15:29:55 +01:00
55460ee6dc
bpo-41044: Generate valid PEG python parsers for opt+seq rules (GH-20995)
...
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
2020-06-20 18:40:06 +01:00
7ba08ff7b4
bpo-40334: use the TOKENS file when checking dangling rules (GH-19849)
2020-05-01 23:14:12 +01:00
4db245ee9d
bpo-40334: refactor and cleanup for the PEG generators (GH-19775)
2020-04-29 10:42:21 +01:00
c5fc156852
bpo-40334: PEP 617 implementation: New PEG parser for CPython (GH-19503)
...
Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
2020-04-22 23:29:27 +01:00
Pablo Galindo
Batuhan Taskaya