Armin, My example is not equivalent to the actual test. But here is the snippet from test_pypackrat.py
def test_leftrecursion(self): class parser(PackratParser): """ b: b 'a' | 'b'; """ print parser._code p = parser("b") res = p.b() assert res == "b" p = parser("bac") res = p.b() assert p._pos == 2 assert res == "a" p = parser("baaaaaaaaaaaaaac") res = p.b() assert p._pos == 15 assert res == "a" This seems to indicate that it does support left recursion. 2011/5/8 Armin Rigo <ar...@tunes.org> > > Hi Gustavo, > > On Sun, May 8, 2011 at 9:39 AM, Gustavo Kuerten <rubyco...@gmail.com> wrote: > > I noticed that there is a test in test_pypackrat.py which seems to suggest > > that the parser supports left recursion. > > > > a: a ":" | "b"; > > I cannot find this test anywhere. Can you tell more precisely where > it is from? I looked in pypy/rlib/parsing/test/test_pypackrat.py. > > > So, does it or does it not support left recursion ? > > It does not, as far as I know. > > > Armin -- Regards, G _______________________________________________ pypy-dev@codespeak.net http://codespeak.net/mailman/listinfo/pypy-dev