/
Array.pm
41 lines (34 loc) · 1 KB
/
Array.pm
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use v6;
use PDF::COS;
use PDF::COS::Tie::Array;
class PDF::COS::Array
is Array
does PDF::COS
does PDF::COS::Tie::Array {
use PDF::COS::Util :from-ast, :to-ast;
my %seen{Any} = (); #= to catch circular references
method new(List :$array = [], |c) {
my $obj = %seen{$array};
without $obj {
temp %seen{$array} = $obj = self.bless(:$array, |c);
$obj.tie-init;
# this may trigger cascading PDF::COS::Tie coercians
# e.g. native Array to PDF::COS::Array
$obj[.key] = from-ast(.value) for $array.pairs;
$obj.?cb-init;
}
$obj;
}
my %content-cache{Any} = ();
method content {
my $obj = self;
my $array = %content-cache{$obj};
unless $array {
# to-ast may recursively call $.content. cache to break any cycles
temp %content-cache{$obj} = $array = [];
$array.push: to-ast($_)
for self.list;
}
:$array;
}
}