[antlr-interest] Thoughts on tree construction

[Terence Parr]

On May 7, 2004, at 12:55 PM, Mark Lentczner wrote:
> While I see the correspondence between DOM and AST, and I see the
> appeal of dividing information from a parse into attributes and
> elements, I think any real convergence is wrong.

I agree.  The "attributes" of a node are just instance variables in 
your AST implementation such as MyJavaASTNode.

> 1st: The DOM has a tremendous amount of cruft that is very XML
> specific.  None of this would be applicable to parsing.

yeah, i'm not into implementing the DOM, just making DOM able to walk 
ASTs :)

> I could imagine a DOM layer on top of the AST layer.  Then that DOM API
> could be used w/other software that works with DOM.  In this case, many
> features of the DOM would go unused (ASTs have no need for anything
> like a processing instruction...)  I can see the utility of this.  It
> could even be used to walk the AST and produce a canonical XML
> representation of it.  BUT, I don't think it means that the features of
> DOM should be integrated into AST.

Right.  My thought was simply to make ANTLR play well with DOM tools 
etc... I have no love for XML as you all know and don't see myself 
making heavyweight ANTLR tree nodes. :)

Ter
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