4 files changed, 18 insertions, 0 deletions
diff --git a/include/tag.h b/include/tag.h
index 56d3594474..2bca595f9d 100644
--- a/include/tag.h
+++ b/include/tag.h
@@ -51,6 +51,12 @@ public:
 
     ///Returns the type of the tag
     virtual tag_type get_type() const noexcept = 0;
+
+    friend bool operator==(const tag& lhs, const tag& rhs);
+    friend bool operator!=(const tag& lhs, const tag& rhs);
+
+private:
+    virtual bool equals(const tag& rhs) const = 0;
 };
 
 }
diff --git a/include/tag_compound.h b/include/tag_compound.h
index 8fdc2f6617..51f0cd2709 100644
--- a/include/tag_compound.h
+++ b/include/tag_compound.h
@@ -92,6 +92,8 @@ public:
 
 private:
 
+
+    bool equals(const tag& rhs) const override;
 };
 
 }
diff --git a/include/tag_primitive.h b/include/tag_primitive.h
index 5704da4430..4c210ff0a8 100644
--- a/include/tag_primitive.h
+++ b/include/tag_primitive.h
@@ -55,6 +55,8 @@ public:
 
 private:
     T value;
+
+    bool equals(const tag& rhs) const override;
 };
 
 //Typedefs that should be used instead of the template tag_primitive.
@@ -107,6 +109,12 @@ tag_type tag_primitive<T>::get_type() const noexcept
     return type;
 }
 
+template<class T>
+bool tag_primitive<T>::equals(const tag& rhs) const
+{
+    return value == static_cast<const tag_primitive<T>&>(rhs).value;
+}
+
 }
 
 #endif // TAG_PRIMITIVE_H_INCLUDED
diff --git a/include/tag_string.h b/include/tag_string.h
index 28d1b77085..1daa0c2c6b 100644
--- a/include/tag_string.h
+++ b/include/tag_string.h
@@ -52,6 +52,8 @@ public:
 
 private:
     std::string value;
+
+    bool equals(const tag& rhs) const override;
 };
 
 }