Created
April 18, 2012 18:10
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Can you spot this bug in this line from YAML::Mo?
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# Why do people think this stuff is clever? | |
no warnings;my$M=__PACKAGE__.::;*{$M.Object::new}=sub{bless{@_[1..$#_]},$_[0]}; | |
*{$M.import}=sub{import warnings;$^H|=1538;my($P,%e,%o)=caller.::;shift; | |
eval"no Mo::$_",&{$M.$_.::e}($P,\%e,\%o,\@_)for@_;return if$e{M}; | |
%e=(extends,sub{eval"no $_[0]()";@{$P.ISA}=$_[0]},has,sub{my$n=shift; | |
my$m=sub{$#_?$_[0]{$n}=$_[1]:$_[0]{$n}};$m=$o{$_}->($m,$n,@_)for sort keys%o; | |
*{$P.$n}=$m},%e,);*{$P.$_}=$e{$_}for keys%e;@{$P.ISA}=$M.Object}; | |
*{$M.'builder::e'}=sub{my($P,$e,$o)=@_;$o->{builder}=sub{my($m,$n,%a)=@_; | |
my$b=$a{builder}or return$m;sub{$#_?$m->(@_):!exists$_[0]{$n}?$_[0]{$n}= | |
$_[0]->$b:$m->(@_)}}};*{$M.'default::e'}=sub{my($P,$e,$o)=@_;$o->{default} | |
=sub{my($m,$n,%a)=@_;$a{default}or return$m;sub{$#_?$m->(@_):!exists$_[0]{$n} | |
?$_[0]{$n}=$a{default}->(@_):$m->(@_)}}};my$i=\&import;*{$M.import}=sub{(@_==2 | |
and not $_[1])?pop@_:@_==1?push@_,grep!/import/,@f:();goto&$i};@f=qw[builder | |
default import];use strict;use warnings; |
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