4 files changed, 15 insertions, 0 deletions
diff --git a/include/tag.h b/include/tag.h
index 29e63a9c54..acc537500f 100644
--- a/include/tag.h
+++ b/include/tag.h
@@ -21,6 +21,7 @@
 #define TAG_H_INCLUDED
 
 #include <cstdint>
+#include <memory>
 
 namespace nbt
 {
@@ -52,6 +53,8 @@ public:
     ///Returns the type of the tag
     virtual tag_type get_type() const noexcept = 0;
 
+    virtual std::unique_ptr<tag> move_clone() && = 0;
+
     friend bool operator==(const tag& lhs, const tag& rhs);
     friend bool operator!=(const tag& lhs, const tag& rhs);
 
diff --git a/include/tag_compound.h b/include/tag_compound.h
index e1d5218a9a..435fdbdff6 100644
--- a/include/tag_compound.h
+++ b/include/tag_compound.h
@@ -109,6 +109,8 @@ public:
 
     tag_type get_type() const noexcept override;
 
+    std::unique_ptr<tag> move_clone() && override;
+
 private:
     std::map<std::string, value> tags;
 
diff --git a/include/tag_primitive.h b/include/tag_primitive.h
index bf8600c9f1..e35d462c48 100644
--- a/include/tag_primitive.h
+++ b/include/tag_primitive.h
@@ -53,6 +53,8 @@ public:
 
     tag_type get_type() const noexcept override;
 
+    std::unique_ptr<tag> move_clone() && override;
+
 private:
     T value;
 
@@ -110,6 +112,12 @@ tag_type tag_primitive<T>::get_type() const noexcept
 }
 
 template<class T>
+std::unique_ptr<tag> tag_primitive<T>::move_clone() &&
+{
+    return std::unique_ptr<tag>(new tag_primitive<T>(std::move(*this)));
+}
+
+template<class T>
 bool tag_primitive<T>::equals(const tag& rhs) const
 {
     return value == static_cast<const tag_primitive<T>&>(rhs).value;
diff --git a/include/tag_string.h b/include/tag_string.h
index 05a2e1cb4d..456fa8ad08 100644
--- a/include/tag_string.h
+++ b/include/tag_string.h
@@ -47,6 +47,8 @@ public:
 
     tag_type get_type() const noexcept override;
 
+    std::unique_ptr<tag> move_clone() && override;
+
 private:
     std::string value;