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Re^2: Complex Splitting - /\G.../gc

by ikegami (Pope)
on Feb 07, 2007 at 08:00 UTC ( #598701=note: print w/ replies, xml ) Need Help??


in reply to Re: Complex Splitting - Parse::RecDescent
in thread Complex Splitting

That silently ignores whitespace (read up on <skip>).

Also, P::RD is rather slow. I'd even say inexcusably slow if you're just using it as a tokenizer. May I suggest a much faster tokenizer?

use strict; use warnings; sub process_token { my ($token) = @_; print("Token: $token\n"); } { my $str = "ABC[GHI]XY[Z]1A"; for ($str) { /\G \[ ([A-Z]*) \] /xgcs && do { process_token("$1"); redo }; /\G ([A-Z]) /xgcs && do { process_token("$1"); redo }; /\G (.) /xgcs && do { printf("Unexpected '%s' at pos %d\n", $1, pos()-length($1)); redo }; } }


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