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diff --git a/libyul/AsmPrinter.h b/libyul/AsmPrinter.h
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+/*
+	This file is part of solidity.
+
+	solidity 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.
+
+	solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @author Christian <c@ethdev.com>
+ * @date 2017
+ * Converts a parsed assembly into its textual form.
+ */
+
+#pragma once
+
+#include <libyul/AsmDataForward.h>
+
+#include <libyul/YulString.h>
+
+#include <boost/variant.hpp>
+
+namespace yul
+{
+
+class AsmPrinter: public boost::static_visitor<std::string>
+{
+public:
+	explicit AsmPrinter(bool _yul = false): m_yul(_yul) {}
+
+	std::string operator()(Instruction const& _instruction);
+	std::string operator()(Literal const& _literal);
+	std::string operator()(Identifier const& _identifier);
+	std::string operator()(FunctionalInstruction const& _functionalInstruction);
+	std::string operator()(ExpressionStatement const& _expr);
+	std::string operator()(Label const& _label);
+	std::string operator()(StackAssignment const& _assignment);
+	std::string operator()(Assignment const& _assignment);
+	std::string operator()(VariableDeclaration const& _variableDeclaration);
+	std::string operator()(FunctionDefinition const& _functionDefinition);
+	std::string operator()(FunctionCall const& _functionCall);
+	std::string operator()(If const& _if);
+	std::string operator()(Switch const& _switch);
+	std::string operator()(ForLoop const& _forLoop);
+	std::string operator()(Block const& _block);
+
+private:
+	std::string formatTypedName(TypedName _variable) const;
+	std::string appendTypeName(YulString _type) const;
+
+	bool m_yul = false;
+};
+
+}