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package Class::Data::Lite; |
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use 5.008001; |
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use strict; |
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use warnings; |
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our $VERSION = "0.0010"; |
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sub _croak {require Carp; Carp::croak(@_) } |
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sub import { |
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shift; |
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my %args = @_; |
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my $pkg = caller(0); |
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my %key_ctor = ( |
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rw => \&_mk_accessor, |
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ro => \&_mk_ro_accessor, |
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); |
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no strict 'refs'; |
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for my $key (keys %key_ctor) { |
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if (my $accessors = delete $args{$key}) { |
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_croak "value of the '$key' parameter should be an arrayref or hashref" |
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unless ref($accessors) =~ /^(?:HASH|ARRAY)$/; |
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my %h = ref($accessors) eq 'HASH' ? %$accessors : map {($_ => undef)} @$accessors; |
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while (my ($k, $v) = each %h) { |
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*{"${pkg}::${k}"} = $key_ctor{$key}->($pkg, $k, $v); |
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} |
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} |
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} |
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} |
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sub _mk_accessor { |
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my ($pkg, $meth, $data) = @_; |
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return sub { |
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100
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if (@_>1) { |
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if ($_[0] ne $pkg) { |
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# In the case of rw, raise an exception here because there is a |
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# possibility of being overwritten from a child class. |
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# In the case of ro, there is no risk, so we do not raise |
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# exceptions in particular. |
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_croak qq[can't call "${pkg}::${meth}" as object method or inherited class method]; |
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} |
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$data = $_[1]; |
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} |
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$data; |
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}; |
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} |
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sub _mk_ro_accessor { |
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my ($pkg, $meth, $data) = @_; |
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return sub { $data }; |
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} |
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1; |
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__END__ |