[comp.compilers] Strong LL

aycock@cpsc.ucalgary.ca (John Aycock) (03/16/91)

I just got the book "Parsing Techniques: A Practical Guide", by
Grune & Jacobs today... it looks very worthwhile.  Here's what they
have to say about it (quoted without permission):

'If all entries of the resulting parse table have at most one element,
the parser is again deterministic.  In this case, the grammar is called
strong-LL(1) ... Every strong-LL(1) grammar is LL(1) ... every LL(1)
grammar is strong-LL(1) [argument follows] ... the difference between
LL(1) parsing and strong-LL(1) parsing is that the strong-LL(1)
parser sometimes makes e-moves before detecting an error.'

0-13-651431-6.  I've just browsed through it, but it looks well
worth the money; it discusses techniques in detail that are just
mentioned in passing in many of the compiler books.

Disclaimer: I have no connection with the authors or publishing house.
:ja
--
John D. Aycock		aycock@cpsc.ucalgary.ca
(403) 285-8727
-- 
Send compilers articles to compilers@iecc.cambridge.ma.us or
{ima | spdcc | world}!iecc!compilers.  Meta-mail to compilers-request.