Le 08/03/2013 16:58, Mariano Martinez Peck a écrit :
On Fri, Mar 8, 2013 at 12:52 PM, Goubier Thierry <[email protected]
<mailto:[email protected]>> wrote:
Hi,
I'm trying to port SmaCC to 2.0 and I'm looking for the equivalent
to SystemChangeNotifier>>__doSilently:. Is it
SystemAnnouncer>>__suspendAllWhile:?
(doSilently: is used in SmaCC tests).
There is also a nice #valueWithoutNotifications in BlockClosure.
BTW, does it make sense to port SmaCC?
Which use case do you have in which you prefer SmaCC over say PetitParse?
I took a look few weeks ago to something done in SmaCC and it was full
of ugly unmaintainable class side tables.....
If you are OK with grammars as a way to clearly specify a syntax, and
you don't have too much context in it, a LALR parser as SmaCC is hard to
beat (fairly short to write, and to maintain *IF* you use SmaCC-Dev).
Moreover, SmaCC lexers being entirely compiled in Smalltalk (i.e. not a
simulation of an automaton but direct compilation of the minimized DFA),
it's hard to be any faster.
And never, never touch the tables by hand. They are all generated ! The
only thing you need to understand a SmaCC generated parser and scanner
are the comments class-side.
For the kind of parsing I do, I need SmaCC. I don't know yet if
PetitParser can take the load.
Thierry
Thanks,
Thierry
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Thierry Goubier
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Mariano
http://marianopeck.wordpress.com
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Thierry Goubier
CEA list
Laboratoire des Fondations des Systèmes Temps Réel Embarqués
91191 Gif sur Yvette Cedex
France
Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95
