Re: Sun lex++ and yacc++ ?

vern@daffy.ee.lbl.gov (Vern Paxson)
Thu, 23 Apr 1992 22:31:35 GMT

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Related articles
Sun lex++ and yacc++ ? gunter@sprite.Berkeley.EDU (1992-04-22)
Re: Sun lex++ and yacc++ ? dds@doc.imperial.ac.uk (Diomidis Spinellis) (1992-04-23)
Re: Sun lex++ and yacc++ ? vern@daffy.ee.lbl.gov (1992-04-23)
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Newsgroups: comp.compilers
From: vern@daffy.ee.lbl.gov (Vern Paxson)
Keywords: lex, yacc, C++
Organization: Lawrence Berkeley Laboratory, Berkeley
References: 92-04-111
Date: Thu, 23 Apr 1992 22:31:35 GMT

In article 92-04-111 gunter@sprite.Berkeley.EDU (Michial Gunter) writes:
>(The problem with yacc is that the types of all (non)terminal are a
>union. Unions in C++ cannot contain classes with constructor ...


Use pointers to classes instead of classes themselves. With this approach
I don't have any problems writing C++ parser/scanners using yacc (or bison)
and flex.


Vern


Vern Paxson vern@ee.lbl.gov
Computer Systems Engineering ucbvax!ee.lbl.gov!vern
Lawrence Berkeley Laboratory (510) 486-7504
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