Some encode/decode practice.

src/compression/HuffmanEncoder.h

@@ -1,11 +1,21 @@
 #pragma once
 
+#include "RawTree.h"
+
 #include <vector>
+#include <unordered_map>
 
 class HuffmanEncoder
 {
 using DataStream = std::vector<unsigned char>;
+using CountPair = std::pair<unsigned char, unsigned>;
 
 public:
-	void encode(const DataStream& stream);
+    void encode(const DataStream& stream);
+
+    void encode(const std::unordered_map<unsigned char, unsigned>& counts);
+
+private:
+    void dumpTree(const RawTree<CountPair>& tree) const;
+    void dumpNode(RawNode<CountPair>* node, unsigned depth) const;
 };