1 files changed, 93 insertions, 0 deletions
diff --git a/libsolidity/codegen/AsmCodeGen.h b/libsolidity/codegen/AsmCodeGen.h
new file mode 100644
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+++ b/libsolidity/codegen/AsmCodeGen.h
@@ -0,0 +1,93 @@
+/*
+	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/>.
+*/
+/**
+ * Adaptor between the abstract assembly and eth assembly.
+ */
+
+#pragma once
+
+#include <libyul/AsmAnalysis.h>
+#include <libyul/backends/evm/AbstractAssembly.h>
+
+#include <liblangutil/SourceLocation.h>
+
+#include <functional>
+
+namespace yul
+{
+struct Block;
+}
+
+namespace dev
+{
+namespace eth
+{
+class Assembly;
+class AssemblyItem;
+}
+
+namespace solidity
+{
+
+class EthAssemblyAdapter: public yul::AbstractAssembly
+{
+public:
+	explicit EthAssemblyAdapter(eth::Assembly& _assembly);
+	void setSourceLocation(langutil::SourceLocation const& _location) override;
+	int stackHeight() const override;
+	void appendInstruction(solidity::Instruction _instruction) override;
+	void appendConstant(u256 const& _constant) override;
+	void appendLabel(LabelID _labelId) override;
+	void appendLabelReference(LabelID _labelId) override;
+	size_t newLabelId() override;
+	size_t namedLabel(std::string const& _name) override;
+	void appendLinkerSymbol(std::string const& _linkerSymbol) override;
+	void appendJump(int _stackDiffAfter) override;
+	void appendJumpTo(LabelID _labelId, int _stackDiffAfter) override;
+	void appendJumpToIf(LabelID _labelId) override;
+	void appendBeginsub(LabelID, int) override;
+	void appendJumpsub(LabelID, int, int) override;
+	void appendReturnsub(int, int) override;
+	void appendAssemblySize() override;
+	std::pair<std::shared_ptr<AbstractAssembly>, SubID> createSubAssembly() override;
+	void appendDataOffset(SubID _sub) override;
+	void appendDataSize(SubID _sub) override;
+	SubID appendData(dev::bytes const& _data) override;
+
+private:
+	static LabelID assemblyTagToIdentifier(eth::AssemblyItem const& _tag);
+
+	eth::Assembly& m_assembly;
+	std::map<SubID, dev::u256> m_dataHashBySubId;
+	size_t m_nextDataCounter = std::numeric_limits<size_t>::max() / 2;
+};
+
+class CodeGenerator
+{
+public:
+	/// Performs code generation and appends generated to _assembly.
+	static void assemble(
+		yul::Block const& _parsedData,
+		yul::AsmAnalysisInfo& _analysisInfo,
+		dev::eth::Assembly& _assembly,
+		yul::ExternalIdentifierAccess const& _identifierAccess = yul::ExternalIdentifierAccess(),
+		bool _useNamedLabelsForFunctions = false
+	);
+};
+
+}
+}