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Author SHA1 Message Date
Pablo Galindo
270e249290
[3.9] Fix 'gather' rules in the python parser generator (GH-22021) (GH-22080) 
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.
(cherry picked from commit e55a0e9)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
 2020-09-03 16:35:36 +01:00
Miss Islington (bot)
9862181750
bpo-41044: Generate valid PEG python parsers for opt+seq rules (GH-20995) 
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
(cherry picked from commit 55460ee6dc)

Co-authored-by: Batuhan Taskaya <isidentical@gmail.com>
 2020-06-20 10:59:32 -07:00
Pablo Galindo
7ba08ff7b4
bpo-40334: use the TOKENS file when checking dangling rules (GH-19849) 2020-05-01 23:14:12 +01:00
Pablo Galindo
4db245ee9d
bpo-40334: refactor and cleanup for the PEG generators (GH-19775) 2020-04-29 10:42:21 +01:00
Pablo Galindo
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