[antlr-interest] Line number information for Tree Parser exceptions

[veekook]

Is there any way to augment exceptions thrown by the tree parser (eg 
MismatchedTokenException) to maintain line numbers?  I've subclassed 
CommonAST to include line numbers in my AST, but is there a method 
for getting at the line numbers for an offending rule from a catch 
block embedded in a tree grammar rule?  The following doesn't work 
because tree exceptions don't track line numbers.

rule: #(A B C) { ... }
exception
catch [antlr::MismatchedTokenException& ex] {
		cout << "Expecting blah on line" << ex.getLine();
}
}	



 

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