>>938 Perl 状態セル4個
$ cat input
"aa,a",aa,,"aa\"aa"
$ perl odai938 < input
[None, 'a', 'a', ',', 'a', None, 'X', 'a', 'a', 'X', 'X', None, 'a', 'a', None, '"', 'a', 'a', None]
$ cat odai938

%maton = (
'N' => { 'a' => ['N', q('a')] , ',' => ['N', q('X')] , '"' => ['Q', q(None)] , '\\' => ['E', q(None)] },
'Q' => { 'a' => ['Q', q('a')] , ',' => ['Q', q(',')] , '"' => ['N', q(None)] , '\\' => ['F', q(None)] },
'E' => { 'a' => ['N', q('a')] , ',' => ['N', q(',')] , '"' => ['N', q('"') ] , '\\' => ['N', q(None)] },
'F' => { 'a' => ['Q', q('a')] , ',' => ['Q', q(',')] , '"' => ['Q', q('"') ] , '\\' => ['Q', q(None)] },
);

@res = ();
$state = 'N';
for $c ( split //, <> ) {
($next, $out) = @{$maton{$state}{$c}};
last unless defined $next;
push @res, $out;
$state = $next;
}
printf "[%s]\n", join ', ', @res;