[antlr-interest] Re: SableCC tree stuff (Was: Antlr 3.0 spaces between tokens)
lgcraymer
lgc at mail1.jpl.nasa.gov
Thu Nov 11 20:08:46 PST 2004
--- In antlr-interest at yahoogroups.com, Monty Zukowski <monty at c...> wrote:
> On Nov 11, 2004, at 9:30 AM, Alexey Demakov wrote:
>
> >
> > I'm playing with SableCC tree, visitors and walkers and can't agree
> > that generation of tree from grammar is good idea. Even if it is
> > heterogenous
> > strictly-typed SableCC tree.
> > I don't like tree node repetition because of grammar conflict
> > resolving.
> > See java grammar example:
> >
> > AForStatement
> > AForStatementNoShortIF
> >
>
> ANTLR doesn't make trees from the grammar, it lets you create Abstract
> Syntax Trees. From this example it seems SableCC is creating parse
> trees, with a node for every rule, unlike ANTLR.
That's what Alexey was saying. SableCC takes an LALR/parse tree
approach to language translation, and he finds the ANTLR approach
preferable.
--Loring
>
> Monty
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