On 2009-11-18, at 14:41:29, John Levine wrote:
For an arbitrary .y file, I'd like to know if it's possible to get
some report detail that would tell me (when using the %glr-parser
option) what was the maximum 'k' lookahead used for that grammar.
Unless it has been changed lately, it just uses LALR(1) and splits
the
parse when ambiguous.
That's what it does. Bison can tell you whether a grammar is LALR(1),
but if it's not it can't tell you what class of language it is.
Hi John,
It is my impression that most practical GLR grammars have parses
that collapse pretty quickly after they split,
For the info which I would find useful, this would be an important
part -- i.e.
glrinfo: split level 1, split at state 216 (somename: someothername, …)
but I don't have any statistics to back that up.
Philip Aker
echo [email protected]@nl | tr a...@. p-za-o.@
Democracy: Two wolves and a sheep voting on lunch.
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