better example

include/sp/protocol/Field.h

@@ -0,0 +1,65 @@
+#pragma once
+
+#include <sp/common/DataBuffer.h>
+
+namespace sp {
+
+template <typename ValueType>
+class Field {
+  public:
+	// Provide an access to the stored value
+	ValueType& GetValue() {
+		return m_Value;
+	}
+	const ValueType& GetValue() const {
+		return m_Value;
+	}
+
+	// Read (deserialise) and update internal value
+	void Read(DataBuffer& buffer) {
+		buffer >> m_Value;
+	}
+
+	// Write (serialise) internal value
+	void Write(DataBuffer& buffer) const {
+		buffer << m_Value;
+	}
+
+	Field& operator=(const ValueType& value) {
+		m_Value = value;
+		return *this;
+	}
+
+  private:
+	ValueType m_Value;
+};
+
+// Functor used to read all tuple values
+class FieldReader {
+  public:
+	FieldReader(DataBuffer& buffer) : m_Buffer(buffer) {}
+
+	template <typename TField>
+	void operator()(TField& field) {
+		field.Read(m_Buffer);
+	}
+
+  private:
+	DataBuffer& m_Buffer;
+};
+
+// Functor used to write all tuple values
+class FieldWriter {
+  public:
+	FieldWriter(DataBuffer& buffer) : m_Buffer(buffer) {}
+
+	template <typename TField>
+	void operator()(TField& field) {
+		field.Write(m_Buffer);
+	}
+
+  private:
+	DataBuffer& m_Buffer;
+};
+
+}  // namespace sp