[antlr-interest] Antlr newbie trying to make Sloc counter with antlr

[tjtaill36]

Hi all,

I am new to antlr and I am trying use it to gather metrics about code
starting with the low hanging fruit I wanted to count slocs so I made the
following grammar but it doesn't seem to work correctly any advice would be
appreciated. Also can I use the just a lexer by itself or do I absolutely
need a Parser as well ?

lexer grammar Slocs;

options {
  language = Java;
  filter=true;
}

@lexer::header {
package code.metrics;
}

@lexer::members {
    public int slocs = 0;
}


COMMENT:
    ('/*' .* '*/' | '//' ~('\r' | '\n')* ) {$channel=HIDDEN;}
    ;


SLOC:
    .* ';' {slocs++;}
    ;


LINE:
    .* NEWLINE {$channel=HIDDEN;}
    ;

fragment NEWLINE:
    '\r'? '\n'
    ;

Thanks

Troy