moose traits for tags

1 files changed, 109 insertions, 0 deletions

diff --git a/Data-MultiValued/lib/Data/MultiValued/AttributeAccessors.pm b/Data-MultiValued/lib/Data/MultiValued/AttributeAccessors.pm
new file mode 100644
index 0000000..e6fec67
--- /dev/null
+++ b/Data-MultiValued/lib/Data/MultiValued/AttributeAccessors.pm
@@ -0,0 +1,109 @@
+package Data::MultiValued::AttributeAccessors;
+use strict;
+use warnings;
+use base 'Moose::Meta::Method::Accessor';
+use Carp 'confess';
+
+sub _instance_is_inlinable { 0 }
+
+sub _generate_accessor_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        if (@_ >= 2) {
+            $attr->set_tagged_value($_[0], {}, $_[1]);
+        }
+        $attr->get_tagged_value($_[0], {});
+    }
+}
+
+sub _generate_reader_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        confess "Cannot assign a value to a read-only accessor"
+            if @_ > 1;
+        $attr->get_tagged_value($_[0], {});
+    };
+}
+
+sub _generate_writer_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        $attr->set_tagged_value($_[0], {}, $_[1]);
+    };
+}
+
+sub _generate_predicate_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        $attr->has_tagged_value($_[0], {})
+    };
+}
+
+sub _generate_clearer_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        $attr->clear_tagged_value($_[0], {})
+    };
+}
+
+sub _generate_tagged_accessor_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        if (@_ >= 3) {
+            $attr->set_tagged_value($_[0], $_[1], $_[2]);
+        }
+        $attr->get_tagged_value($_[0],$_[1]);
+    }
+}
+
+sub _generate_tagged_reader_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        confess "Cannot assign a value to a read-only accessor"
+            if @_ > 2;
+        $attr->get_tagged_value($_[0],$_[1]);
+    };
+}
+
+sub _generate_tagged_writer_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        $attr->set_tagged_value($_[0], $_[1], $_[2]);
+    };
+}
+
+sub _generate_tagged_predicate_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        $attr->has_tagged_value($_[0],$_[1])
+    };
+}
+
+sub _generate_tagged_clearer_method {
+    my $self = shift;
+    my $attr = $self->associated_attribute;
+
+    return sub {
+        $attr->clear_tagged_value($_[0],$_[1])
+    };
+}
+
+1;