[antlr-interest] error messages + treeParser with OR'ed root

[Koen Segers]

Hi,

I have 2 problems.

First one is a problem with the treeParser.
In Parser I created an ast. In treeParser I walk this one.

I have this in my walker:
parameterType=typeSpecifier (par:ID)

If the ID isn't in the ast the error is:
<AST>: expecting ID, found '<empty tree>'

how can I give the line number + column number?

Second problem has to do with an root in walker that is OR'ed.
#( (PLUS|MINUS|STAR|DIV) lType = expr rType = expr)
gives an error of unexpected token '('.

Any idea how I can fix this?


Greetz

Thx in advance.


-- 

Koen Segers


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