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package Object::Util::Stringify; |
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73470
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use 5.018000; |
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use strict; |
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use warnings; |
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use Scalar::Util qw(blessed refaddr); |
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use Exporter qw(import); |
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our $AUTHORITY = 'cpan:PERLANCAR'; # AUTHORITY |
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our $DATE = '2021-11-23'; # DATE |
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our $DIST = 'Object-Util-Stringify'; # DIST |
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our $VERSION = '0.003'; # VERSION |
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our @EXPORT_OK = qw( |
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set_stringify |
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unset_stringify |
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); |
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my %Overloaded_Packages; |
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my %Object_Strings; # key=refaddr, val=string |
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sub set_stringify { |
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require overload; |
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my ($obj, $str) = @_; |
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die "First argument must be a blessed reference" unless blessed($obj); |
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my $obj_pkg = ref $obj; |
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$Object_Strings{ refaddr($obj) } = $str; |
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$obj_pkg->overload::OVERLOAD(q("") => \&_overload_string) |
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unless $Overloaded_Packages{$obj_pkg}++; |
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# return the obj for convenience |
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$obj; |
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} |
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sub unset_stringify { |
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my ($obj, $str) = @_; |
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die "First argument must be a blessed reference" unless blessed($obj); |
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my $obj_pkg = ref $obj; |
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delete $Object_Strings{ refaddr($obj) }; |
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# return the obj for convenience |
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$obj; |
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} |
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sub _overload_string { |
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my $obj = shift; |
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my $key = refaddr $obj; |
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exists($Object_Strings{$key}) ? $Object_Strings{$key} : $obj; |
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} |
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1; |
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# ABSTRACT: Utility routines related to object stringification |
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__END__ |