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be faster by doing more work?
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feeding a 18kb email message, I get: | |
$ perl6 /tmp/p.p6 medium-sized-email-message.txt | |
slurping 0.00634555 | |
matching 1.1612016 | |
parsing 0.02143336 |
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use v6.d; | |
sub time(&block,:$name = 'took') { | |
my $start = now; | |
LEAVE { say "$name { now - $start }" } | |
return block(); | |
} | |
my @separators = ( | |
"\x0a\x0d\x0a\x0d", | |
"\x0d\x0a\x0d\x0a", | |
"\x0a\x0a", | |
"\x0d\x0d", | |
); | |
my grammar Message { | |
regex TOP { | |
<headers> | |
<separator> | |
<body> | |
} | |
token newline { [\x0d\x0a] | [\x0a\x0d] | \x0a | \x0d } | |
token separator { @separators } | |
token body { .* } | |
regex headers { | |
<header>+ % <newline> | |
} | |
regex header { | |
<name> \: \h* <value> | |
|| <junk> | |
} | |
token name { | |
<-[:\s]>+ | |
} | |
regex value { | |
<line>+ % [<newline> \h+] | |
} | |
token line { \N* } | |
token junk { \N+ } | |
} | |
my Str $string = time :name('slurping'), { slurp(@*ARGS[0].IO,:enc<utf8-c8>) }; | |
my $done = time :name('matching'), { $string ~~ /@separators/ }; | |
my $match = time :name('parsing'), { Message.parse($string) }; |
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