On 3/04/20 7:10 am, Guido van Rossum wrote:
Since last fall's core sprint in London, Pablo Galindo Salgado,
Lysandros Nikolaou and myself have been working on a new parser for
CPython. We are now far enough along that we present a PEP we've written:
https://www.python.org/dev/peps/pep-0617/
Was any consideration given to other types of parser, such
as LR or LALR?
LR parsers handle left recursion naturally, and don't suffer
from any of the drawbacks mentioned in the PEP such as taking
exponential time or requiring all the source to be loaded
into memory.
I think there needs to be a section in the PEP justifying the
choice of PEG over the alternatives.
--
Greg
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