From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: * X-Spam-Status: No, score=1.3 required=5.0 tests=BAYES_00,INVALID_MSGID, MSGID_RANDY autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,1be1b347b5b5ad43 X-Google-Attributes: gid103376,public From: bourguet@my-deja.com Subject: Re: Ayacc/Aflex "entropy" (P2Ada) Date: 1999/10/26 Message-ID: <7v3u0f$nn6$1@nnrp1.deja.com>#1/1 X-Deja-AN: 540685460 References: <3813716C.52655126@Maths.UniNe.CH> <7v2400$e02$1@nnrp1.deja.com> <7v30jd$3i6$1@nnrp1.deja.com> X-Http-Proxy: 1.1 sj-netcache (NetCache 4.0R2D6), 1.0 x24.deja.com:80 (Squid/1.1.22) for client 158.140.208.29, 158.140.3.201 Organization: Deja.com - Before you buy. X-Article-Creation-Date: Tue Oct 26 09:58:40 1999 GMT X-MyDeja-Info: XMYDJUIDbourguet Newsgroups: comp.lang.ada X-Http-User-Agent: Mozilla/4.61 [en] (X11; I; SunOS 5.5.1 sun4u) Date: 1999-10-26T00:00:00+00:00 List-Id: In article <7v30jd$3i6$1@nnrp1.deja.com>, Robert Dewar wrote: > In article <7v2400$e02$1@nnrp1.deja.com>, > Ted Dennison wrote: > > You ought to consider getting a good yacc book. I use the > O'Reilly > > Lex/Yacc nutshell book, and it seems quite good. It has a > whole chapter > > on Yacc conflicts that you might find most helpful. > (Reduce/Reduce > > roughly means a series of tokens matches 2 rules and it can't > decide > > which to use). > > I find it appalling that people use such rusty tools as YACC > and AYACC, these are very limited tools which seem to completely > ignore the considerable advances in this area in the last 25 > years! Could you post some references to books or web pages or good keywords to reduce the space search on the web. All books that I know off which speak about parser generators are at the level of LL(1) or simplified LR(1) (LALR(1) or other way of reducing the LR tables) except T.J. Parr book on PCCTS which describe more how to use PCCTS than its "redefinition" of LL(k) and how to use it to build a parser generator. Web pages I've found with my naive keyword approaches have not be of more use; some buzzwords like OO where added but if they were more than buzzwords, it was not clear for me. Thanks, -- Jean-Marc Sent via Deja.com http://www.deja.com/ Before you buy.