[antlr-interest] C and #define

[Paul Keir]

Hi,

I'm building on the C grammar from the examples, and would like to 
modify the lexer rule which ignores lines starting with #; I'd like not 
to ignore #define, but ignore the rest. Currently the rule is:

// ignore #line info for now
LINE_COMMAND
    : '#' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
    ;

Remembering that the # can be separated from the define, I've tried a 
few things like this:

// ignore #line info for now
LINE_COMMAND
    :  ~( '#' 'define' | '#define' ) ~('\n'|'\r')* '\r'? '\n' 
{$channel=HIDDEN;}
    ;

but I can't get it to work as intended. Can anyone offer a suggestion?

Best regards,
Paul


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