[antlr-interest] Re: JavaTreeParser? What does it do?

[micheal_jor]

> Tree parsers do the "getFirstChild()" and "getNextSibling()" for 
> you as well as matching a tree pattern--the whole idea is to extend 
> the ANTLR parsing concept to trees.  About the only case where you 
> might want to walk a tree without a tree parser is when 
the "Visitor" 
> pattern is appropriate.

Hi Loring,

Do you have any guidelines/advise on choosing between an architecture 
using the Visitor pattern or TreeParsers?

Having made full support of hetero-ASTs a priority in the C# codegen -
 to support the use of Visitors with ANTLR-built trees - we now often 
need to choose between both architectures.

Cheers,

Micheal




 

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