Re: push parser implemenation

[Akim Demaille]

>>> "Bob" == Bob Rossi <address@hidden> writes:

 > Well, currently, push.c only implements yyparse (). If it's in normal
 > mode it generates the standard pull parser, otherwise in push mode it
 > generates the push parser. In push.c the pull parser is just as
 > efficient as the yacc.c pull parser. Same for the pure parser. However,
 > the push parser is much less efficient. (I get 30% for the benchmark).

So my reading is: there is no reason not to use push.c as the new yacc.c.

 > So, if we decided to change push.c to always generate a yypushparse
 > function, and then implement yyparse on top of the yypushparse,
 > then yyparse will be significantly slower than yacc.c's
 > yyparse. That's why I decided not to go down this route. I thought
 > the efficiency was probably more important.

That's not exactly my claim: I say that yyparse should always (push
enabled or not) refer to the pull parser.  When the push mode is
enabled, yyparse should refer to the yypushparse wrapper.