1 files changed, 76 insertions, 0 deletions
diff --git a/lib/asn1kit/types/object_identifier.rb b/lib/asn1kit/types/object_identifier.rb
new file mode 100644
index 0000000..1c8f69c
--- /dev/null
+++ b/lib/asn1kit/types/object_identifier.rb
@@ -0,0 +1,76 @@
+# coding: ASCII-8BIT
+
+class ASN1Kit::ObjectIdentifier < ASN1Kit::Type
+  asn1_tag :IMPLICIT, :UNIVERSAL, 6
+  asn1_alias "OBJECT IDENTIFIER"
+
+  attr_reader :components
+
+  def initialize(components)
+    @components = components
+  end
+
+  def self.from_dot_notation(string)
+    new(string.split(".").map { |s| Integer(s) })
+  end
+
+  def dot_notation
+    @components.join(".")
+  end
+
+  def to_der
+    first, second, rest = @components
+    content = [first * 40 + second, *rest].pack("w*")
+    der_header(content.bytesize) << content
+  end
+
+  private def inspect_inner
+    "{ #{@components.join(" ")} }"
+  end
+
+  def cast_to(type)
+    return type.new(@components) if type <= ASN1Kit::ObjectIdentifier
+    super
+  end
+
+  def ==(other)
+    other.is_a?(ASN1Kit::ObjectIdentifier) && @components == other.components
+  end
+end
+
+module ASN1Kit::Internal::CompileObjectIdentifier
+  refine ASN1Kit::ObjectIdentifier.singleton_class do
+    def _new_internal(base, arys)
+      obj = allocate
+      obj.instance_variable_set(:@_compile_base, base)
+      obj.instance_variable_set(:@_compile_arys, arys)
+      obj
+    end
+  end
+
+  refine ASN1Kit::ObjectIdentifier do
+    def _compile_fixup(state)
+      base_value = remove_instance_variable(:@_compile_base)
+      arys = remove_instance_variable(:@_compile_arys)
+
+      if base_value
+        base = base_value.unwrap(state)
+        components = base.components.dup
+      else
+        components = []
+      end
+
+      arys.each do |ary|
+        case ary
+        when ASN1Kit::Internal::UnresolvedValue
+          rel_oid = ary.unwrap(state)
+          components.concat(rel_oid.components)
+        else
+          components.concat(ary.map { |v| v.unwrap_as_number(state) })
+        end
+      end
+
+      @components = components
+    end
+  end
+end