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abe pushed a commit to tag alt-io-all-new-0.00
in repository libio-all-perl.
commit a923b961d513738c621a19b7c6b7429ab8f08c7f
Author: Ingy döt Net <i...@ingy.net>
Date: Mon Jul 16 00:50:20 2012 -0700
export chain and option accessors
---
lib/IO/All/OO.pm | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/lib/IO/All/OO.pm b/lib/IO/All/OO.pm
index fdcd1e9..fb87831 100644
--- a/lib/IO/All/OO.pm
+++ b/lib/IO/All/OO.pm
@@ -12,8 +12,36 @@ package IO::All::OO;
# Mo::Inline version 0.31
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.'default::e'}=sub{my($P,$e,$o)=@_;$o->{default}=sub{my($
[...]
+our @EXPORT = qw(chain option);
+
+sub option {
+ my $package = caller;
+ my ($field, $default) = @_;
+ $default ||= 0;
+ field("_$field", $default);
+ no strict 'refs';
+ *{"${package}::$field"} =
+ sub {
+ my $self = shift;
+ *$self->{"_$field"} = @_ ? shift(@_) : 1;
+ return $self;
+ };
+}
+
sub chain {
- die 42;
+ my $package = caller;
+ my ($field, $default) = @_;
+ no strict 'refs';
+ *{"${package}::$field"} =
+ sub {
+ my $self = shift;
+ if (@_) {
+ *$self->{$field} = shift;
+ return $self;
+ }
+ return $default unless exists *$self->{$field};
+ return *$self->{$field};
+ };
}
1;
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