Re: why use flex?

"Theodore.Papadopoulo" <Theodore.Papadopoulo@sophia.inria.fr>
5 Feb 1999 17:19:35 -0500

          From comp.compilers
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| List of all articles for this month |
From: "Theodore.Papadopoulo" <Theodore.Papadopoulo@sophia.inria.fr>
Newsgroups: comp.compilers
Date: 5 Feb 1999 17:19:35 -0500
Organization: INRIA
References: 99-01-111 99-02-004 99-02-015
Keywords: lex, C++

> Travers> The only real complaint I have is the *still* lacking direct
> Travers> C++ support. If one wants that, one has to use to modified
> Travers> Flex++/Bison++ utilities.
>
> Pardon me, but what kind of C++ support would you like to expect from
> Flex and Bison? I have used Flex 2.5.4 and Bison 1.25 in two compiler
> projects, both of which are written in C++. I use the tools in the
> traditional C mode; only the semantic actions contain C++ code.


C++ forbids putting objects into unions. This makes the yylval
techniques of passing tokens values rather inadequate for C++.
Another thing that would be nice is using exceptions for error
recovery (with the hope of nice cleaning of the created objects).
--
                Theodore Papadopoulo (papadop@sophia.inria.fr)


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