I've been experimenting with Filter::Simple and what I am trying to do is this.

Substitute any instance of TOKEN with OTHERTOKEN unless the line contains a for, foreach or while statement. The tricky part is that the scalar contains multiple lines and possibly multiple occurences.

Basically my operator should maintain state when called in a control block. The way I handled it was to split the lines as such and match the individual lines, one at a time and change the function call if neccassary. 
FILTER_ONLY
        code  => sub {
            my @code = split (/\n/);
            # This is suboptimal I'm sure. 
            foreach (@code){
                s/findone/FindOne::findfirst/g 
                    unless m/\b(for|foreach|while)\W/;
            }
            
            $_ = join ("\n",@code);
        }

[download]
Anyone have any suggestions for improving this? It's worked in my test cases so far. Would one regex (if it's possible) be a better solution or would it just make a slower and more obscure?

Thanks,

-Lee

"To be civilized is to deny one's nature."

In reply to Multi-line Substitution question. by shotgunefx

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