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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/>.
+*/
+/**
+ * Yul dialects for EVM.
+ */
+
+#pragma once
+
+#include <libyul/Dialect.h>
+
+#include <libyul/backends/evm/AbstractAssembly.h>
+
+#include <map>
+
+namespace yul
+{
+
+class YulString;
+using Type = YulString;
+struct FunctionCall;
+struct Object;
+
+struct BuiltinFunctionForEVM: BuiltinFunction
+{
+ /// Function to generate code for the given function call and append it to the abstract
+ /// assembly. The third parameter is called to visit (and generate code for) the arguments
+ /// from right to left.
+ std::function<void(FunctionCall const&, AbstractAssembly&, std::function<void()>)> generateCode;
+};
+
+/**
+ * Yul dialect for EVM as a backend.
+ * The main difference is that the builtin functions take an AbstractAssembly for the
+ * code generation.
+ */
+struct EVMDialect: public Dialect
+{
+ EVMDialect(AsmFlavour _flavour, bool _objectAccess);
+
+ /// @returns the builtin function of the given name or a nullptr if it is not a builtin function.
+ BuiltinFunctionForEVM const* builtin(YulString _name) const override;
+
+ static std::shared_ptr<EVMDialect> looseAssemblyForEVM();
+ static std::shared_ptr<EVMDialect> strictAssemblyForEVM();
+ static std::shared_ptr<EVMDialect> strictAssemblyForEVMObjects();
+ static std::shared_ptr<EVMDialect> yulForEVM();
+
+ bool providesObjectAccess() const { return m_objectAccess; }
+
+ /// Sets the mapping of current sub assembly IDs. Used during code generation.
+ void setSubIDs(std::map<YulString, AbstractAssembly::SubID> _subIDs);
+ /// Sets the current object. Used during code generation.
+ void setCurrentObject(Object const* _object);
+
+private:
+ void addFunction(
+ std::string _name,
+ size_t _params,
+ size_t _returns,
+ bool _movable,
+ std::function<void(FunctionCall const&, AbstractAssembly&, std::function<void()>)> _generateCode
+ );
+
+ bool m_objectAccess;
+ Object const* m_currentObject = nullptr;
+ /// Mapping from named objects to abstract assembly sub IDs.
+ std::map<YulString, AbstractAssembly::SubID> m_subIDs;
+ std::map<YulString, BuiltinFunctionForEVM> m_functions;
+};
+
+}