[antlr-interest] ANTLR 3 tree structure stuff

[John D. Mitchell]

>>>>> "matthew" == matthew ford <Matthew.Ford at forward.com.au> writes:
[...]

> Hi Ter, While I like any improvment to trees that would eliminate cycles
> you mention at the end

> " A further restriction is that you should not add the same tree more
> than once if you want the getNextSibling() stuff to work. This would be
> too expensive to enforce probably. "

> If you cannot inforce correct tree construction then not bother change
> the existing one.  Tree contruction and manipulation has been the bane of
> my work with Antlr.  I want robust tree construction that will throw a
> useful error when I try and do some thing silly or just don't understand
> what is happening.

I strongly concur.

Thanks,
	John


 
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