[antlr-interest] two part operators

[Jennifer Cooper]

Hi everyone!
I've just started using antlr and come upon a problem. T try to make lexer recognize two different operators: OP and OP NOT. I want to treat both of them as binary operators and not to treat NOT as unary operator.  My current solution is:

op_expr 
    :    expr (OP^ not_expr)* 
    ; 
not_expr 
    :    expr 
    |       NOT^ expr  
    ;

but this one obviously doesn't treat NOT as part of the binary OP NOT operator.

Any clues?

Cheers,
Jennifer


      
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