[antlr-interest] Using ANTLR with manually-built ASTs

[Bryan Ewbank]

I think the key requirements are in the ANTLR manual (pdf, located on
the website).

There's several function required of a class for it to be walkable...
- getType(), to report the type of the current node
- getFirstChild(), to return the first child (i.e., LHS branch)
- getNextSibling(), to return next sibling (i.e., RHS branch)

I'm sure there's (a bit?) more, but this is the start.  I've also
found it useful to define standard begin and end methods so that your
nodes can be used by C++'s STL algorithms.

Hope this helps,
- Bryan Ewbank

On 6/13/05, Paul Johnson <gt54-antlr at cyconix.com> wrote:
> I'd like to implement an ANTLR tree parser for an existing compiler,
> with the recogniser in lex/yacc. Is this is a sensible thing to do?
> However, there doesn't seem to be any documentation on manually
> constructing ASTs to input to ANTLR - any pointers (preferably C++)?