first cut a contrived use of <foo ...> syntax

gistfile1.txt

#!/usr/bin/env perl6
grammar G {
    my $SOLpos = -1 ;

    regex TOP {  <line>+  }

    method SOLscan($regex) {
        # Print out the string we're matching against for kicks
        say 'self.target: ' , self.target ;
        my $cur = self."!cursor_start_cur"() ;

        # Should now use $SOLpos to run the regex starting at
        # the start of the current line, but here I've just
        # fudged a successful parse.
        $cur."!cursor_pass"(self.pos, 'SOLscan') ;
        $cur
    }

    token line {
        { $SOLpos = self.pos ; say $SOLpos }
        [<word> <space>? <SOLscan \d+>]+  \n
    }

    token word  {  \S+  }
}

my $mo = G.subparse: q:to/END/ ;
hello world 
line two 
END

dd $mo