On Sat, Feb 15, 2014 at 9:37 PM, Jeffrey Kegler < jeffreykeg...@jeffreykegler.com> wrote:
> In my working version, the meta-grammar now runs LATM, with no issues. > This change probably won't make it into the next indexed release, but will > make it into the one after. > I've added global forgiveness to some of my grammars and they work the same, so same thing here. > The difference between changing the default for the meta-grammar (and > therefore for the parsing of all SLIF DSL) and changing the general > default, is that the meta-grammar is a specific grammar, so I know how > lexing works on it and can think out the issues. It also has a large test > suite. Changing the general default is more problematic. > > To be clear, the difference here is changing the parsing of the SLIF DSL > to be LATM and changing the parsing of all the grammars described by that > DSL. Changing the SLIF's meta-grammar is changing the default for one > grammar whose implementation I control. That I will do. Changing the > parsing of all of the grammars described by the SLIF DSL's means changing > the way grammars which I do not know of, and whose implementation I do not > control, are parsed. That's considerably more dangerous, and I don't think > I'll do it. > > As mentioned, changing to LATM means that some grammars which failed to > parse in the past, now will parse. This sounds at worst harmless, and it > usually is, in fact, no worse than harmless. But there are cases where you > *want* the grammar to fail, so there actually is some risk involved in > silently changing failed parses to successful ones. Hence my caution. > All valid points; still, can't help thinking a developer version with LATM metagrammar would be a good thing to allow testing and gather feedback. > > > -- jeffrey > > > On 02/15/2014 11:17 AM, Ruslan Shvedov wrote: > > Finally, something I'm not sure about: a developer version with meta > grammar converted to forgiving to let people test against it and see if and > how exactly it is (in)compatible. > > > > -- > You received this message because you are subscribed to the Google Groups > "marpa parser" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to marpa-parser+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "marpa parser" group. To unsubscribe from this group and stop receiving emails from it, send an email to marpa-parser+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
