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+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	cpp-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file MemTrie.h
+ * @author Gav Wood <i@gavwood.com>
+ * @date 2014
+ */
+
+#pragma once
+
+#include <Common.h>
+#include <FixedHash.h>
+
+namespace eth
+{
+
+class MemTrieNode;
+
+/**
+ * @brief Merkle Patricia Tree "Trie": a modifed base-16 Radix tree.
+ */
+class MemTrie
+{
+public:
+	MemTrie(): m_root(nullptr) {}
+	~MemTrie();
+
+	h256 hash256() const;
+	bytes rlp() const;
+
+	void debugPrint();
+
+	std::string const& at(std::string const& _key) const;
+	void insert(std::string const& _key, std::string const& _value);
+	void remove(std::string const& _key);
+
+private:
+	MemTrieNode* m_root;
+};
+
+}