X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/kivitendo-erp.git/blobdiff_plain/7f5edaa695f8e23af197c4b82b66ca2e1bbfc35e..975304c772762b6a029c21aab00f3f449ed5cdf5:/SL/LXDebug.pm

diff --git a/SL/LXDebug.pm b/SL/LXDebug.pm
index cedd5baec..707b89230 100644
--- a/SL/LXDebug.pm
+++ b/SL/LXDebug.pm
@@ -20,7 +20,7 @@ use constant STDERR_TARGET => 1;
 
 use Data::Dumper;
 use POSIX qw(strftime getpid);
-use Scalar::Util qw(blessed reftype);
+use Scalar::Util qw(blessed refaddr weaken);
 use Time::HiRes qw(gettimeofday tv_interval);
 use YAML;
 use SL::Request ();
@@ -157,20 +157,49 @@ sub warn {
   $self->message(WARN, $message);
 }
 
-sub _clone_for_dump {
-  my ($src) = @_;
+sub clone_for_dump {
+  my ($src, $dumped) = @_;
 
-  return undef unless defined($src);
-  return $src->as_debug_info                                            if blessed($src) && $src->can('as_debug_info');
-  return [ map { _clone_for_dump($_) } @{ $src } ]                      if reftype($src) eq 'ARRAY';
-  return { map { ($_ => _clone_for_dump($src->{$_})) } keys %{ $src } } if reftype($src) eq 'HASH';
-  return "$src";
+  return undef if !defined($src);
+
+  $dumped ||= {};
+  my $addr  = refaddr($src);
+
+  return $dumped->{$addr} if $dumped->{$addr // ''};
+
+
+  if (blessed($src) && $src->can('as_debug_info')) {
+    $dumped->{$addr} = $src->as_debug_info;
+
+  } elsif (ref($src) eq 'ARRAY') {
+    $dumped->{$addr} = [];
+
+    foreach my $entry (@{ $src }) {
+      my $exists = !!$dumped->{refaddr($entry) // ''};
+      push @{ $dumped->{$addr} }, clone_for_dump($entry, $dumped);
+
+      weaken($dumped->{$addr}->[-1]) if $exists;
+
+    }
+
+  } elsif (ref($src) =~ m{^(?:HASH|Form|SL::.+)$}) {
+    $dumped->{$addr} = {};
+
+    foreach my $key (keys %{ $src }) {
+      my $exists             = !!$dumped->{refaddr($src->{$key}) // ''};
+      $dumped->{$addr}->{$key} = clone_for_dump($src->{$key}, $dumped);
+
+      weaken($dumped->{$addr}->{$key}) if $exists;
+    }
+  }
+
+  return $dumped->{$addr} // "$src";
 }
 
 sub dump {
   my ($self, $level, $name, $variable, %options) = @_;
 
-  $variable  = _clone_for_dump($variable);
+  $variable  = clone_for_dump($variable);
   my $dumper = Data::Dumper->new([$variable]);
   $dumper->Sortkeys(1);
   $dumper->Indent(2);