Re: Looking for a parser generator recommendation

Exits Funnel wrote:
> Hello,
>
> I'm looking for a parser generator which meets the following requirements
>
> 1) LALR
>
> 2) Generates a parser in Java.
>
> 3) The generator itself (as opposed to just the generated code) must run
> cross platform (ie, probably be java).
>
> 4) The generated code and any support libraries must be explitly usable
> in commercial software. Unfortunately, our legal department has deemed
> even the Lesser GPL unacceptable. I guess that means I'm looking for
> either something commercial or something in the public domain.
>
> 5) This one's not absolutely necasarry but it would be great if the tool
> supported the generation of some kind of an intermediate form (parse
> tree?) rather than just allowing embedded actions in the rules.


If you just relax requirement 1 above, you can use javacc that generates
LL/recursive descent parsers:


        http://javacc.dev.java.net


It simply generates java code. It uses *NO* libraries apart from the IO
libraries from JDK.


It is licensed under BSD. It has a companion tree generator (jjtree).


More over, it has an active user group and readily available help on
newsgroup: comp.compilers.tools.javacc and users mailing list.


Sreeni.

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