Globally store layer objects as weak references

[perl/modules/LaTeX-TikZ.git] / lib / LaTeX / TikZ / Mod / Layer.pm

diff --git a/lib/LaTeX/TikZ/Mod/Layer.pm b/lib/LaTeX/TikZ/Mod/Layer.pm
index 6b3f73de0967e2e2e5149632370ac5832fb40b06..bfab947ddfbaa4e291eeab1a198a47ed4a688e2a 100644 (file)
--- a/lib/LaTeX/TikZ/Mod/Layer.pm
+++ b/lib/LaTeX/TikZ/Mod/Layer.pm
@@ -15,7 +15,8 @@ Version 0.01
 
 our $VERSION = '0.01';
 
-use List::Util ();
+use Scalar::Util ();
+use List::Util   ();
 
 use LaTeX::TikZ::Mod::Formatted;
 
@@ -91,7 +92,9 @@ around 'new' => sub {
 sub BUILD {
  my ($self) = @_;
 
- $layers{$self->name} = $self;
+ my $name = $self->name;
+ $layers{$name} = $self;
+ Scalar::Util::weaken($layers{$name});
 }
 
 sub DEMOLISH {