[antlr-interest] line numbers in errors

[Edward Povazan]

Hello,

Ok, I know that I need a custom AST node if I want to report errors with
line numbers/source file in my tree parser.
The fact that this isn't supported automatically makes me wonder if I am
doing things in the wrong place.
I have my parser parsing my language nicely now.
I want my type checking and other semantic checks in the tree parser.
And then another tree parser generates my code.
I haven't dealt with parsers for a decade - where do you guys put most of
your error checking? Or do you create a custom AST for decent error
messages. If I use the tree parser I will need 2 passes before code
generation. I just don't see it as easy with the parser.

Thanks
-Ed


 

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