For your viewing pleasure..... 

while(<DATA>){
    my ($re, $term, @vars, %vars, $loops);
    s/\*/ && /g;
    s/\+/ || /g;
    s/(\w+)\s*'/!$1/g;
    $re = qr{\((?:(?>[^()]+)|(??{$re}))*\)};  # :-)
    s/($re)\s*'/!$1/g;
    $term = $_;
    @vars = $_ =~ m/(\w+)/g;
    $vars{$_}++ for @vars;
    @vars = sort keys %vars;
    s/(\w+)/\$$1/g;
    printf "\n@vars = $term";
    @vars = map {"\$$_"}@vars;
    $loops .= "for $_ (0..1) {\n" for @vars;
    $loops .= qq{printf "@vars = %d\n", eval;\n};
    $loops .= "}" for @vars;
    do{ no strict 'vars'; eval $loops };
    die "Can't process $term$_\n$@\n" if $@;
}
__DATA__
a*b*!(c)
a'+b'+c'
!(a*b)
b^a
(a^b)'
(a+(a+b))'*c

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In reply to Re^6: Generate a truth table from input string by tachyon-II
in thread Generate a truth table from input string by Anonymous Monk

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