[antlr-interest] literal token names in AntLR3

[Loring Craymer]

Yes, you can explicitly name tokens in the tokens
section of the grammar:
tokens {
    LITERAL_ADD = 'ADD';
}
and then 'ADD' becomes LITERAL_ADD in generated code.

--Loring

--- "Putrycz, Erik" <Erik.Putrycz at nrc-cnrc.gc.ca>
wrote:

> In Antlr 2.x, the literal tokens got friendly field
> names for their type
> number. 
> 
> E.g. 'ADD' would become LITERAL_ADD but in ANTLR 3,
> all the literals
> become Txxx in the lexer. 
> 
> When working with trees, it was much easier in the
> past to write
> something like
> 
> Switch (node.getType()) {
> 
>             Case MyTokenTypes.LITERAL_ADD:...
> 
> }
> 
> Whereas now you need to get back to
> MyParser.tokenNames to find the
> corresponding one.
> 
> Is there any way to control the naming of the
> literals and get something
> more friendly than the Txxx?
> 
>  
> 
> Erik Putrycz, Ph.D - Research Associate
> 
> Institute for Information Technology - Software
> Engineering Group
> 
> National Research Council, Canada - Building M-50,
> 1200 Montreal Road
> 
> Ottawa, Ontario, CANADA K1A 0R6
> 
>  
> 
> 



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