mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* Code generator for translating Yul / inline assembly to EVM.
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*/
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#pragma once
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#include <libyul/backends/evm/AbstractAssembly.h>
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#include <libyul/backends/evm/DirectStackLayoutGenerator.h>
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#include <libyul/backends/evm/EVMDialect.h>
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namespace solidity::yul
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{
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class DirectEVMCodeTransform: public ASTWalker
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{
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public:
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/// Use named labels for functions 1) Yes and check that the names are unique
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/// 2) For none of the functions 3) for the first function of each name.
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enum class UseNamedLabels { YesAndForceUnique, Never, ForFirstFunctionOfEachName };
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static void run(
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AbstractAssembly& _assembly,
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BuiltinContext& _builtinContext,
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UseNamedLabels _useNamedLabelsForFunctions,
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AsmAnalysisInfo const& _analysisInfo,
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Dialect const& _dialect,
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Block const& _ast
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);
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void operator()(Literal const&) override;
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void operator()(Identifier const&) override;
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void operator()(FunctionCall const& _funCall) override;
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void operator()(ExpressionStatement const& _statement) override;
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void operator()(Assignment const& _assignment) override;
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void operator()(VariableDeclaration const& _varDecl) override;
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void operator()(If const& _if) override;
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void operator()(Switch const& _switch) override;
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void operator()(ForLoop const&) override;
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void operator()(FunctionDefinition const&) override;
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void operator()(Break const&) override;
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void operator()(Continue const&) override;
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void operator()(Leave const&) override;
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void operator()(Block const& _block) override;
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void visit(Statement const& _stmt) override;
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using ASTWalker::visit;
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private:
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DirectEVMCodeTransform(
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AbstractAssembly& _assembly,
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BuiltinContext& _builtinContext,
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UseNamedLabels _useNamedLabelsForFunctions,
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DirectStackLayoutGenerator::Context const& _context,
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AsmAnalysisInfo const& _analysisInfo,
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Dialect const& _dialect
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):
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m_assembly(_assembly),
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m_builtinContext(_builtinContext),
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m_useNamedLabelsForFunctions(_useNamedLabelsForFunctions),
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m_context(_context),
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m_info(_analysisInfo),
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m_dialect(_dialect)
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{}
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/// Shuffles m_stack to the desired @a _targetStack while emitting the shuffling code to m_assembly.
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/// Sets the source locations to the one in @a _debugData.
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void createStackLayout(std::shared_ptr<DebugData const> _debugData, Stack _targetStack);
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AbstractAssembly& m_assembly;
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BuiltinContext& m_builtinContext;
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UseNamedLabels m_useNamedLabelsForFunctions;
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DirectStackLayoutGenerator::Context const& m_context;
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AsmAnalysisInfo const& m_info;
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Dialect const& m_dialect;
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Stack m_stack;
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CFG::FunctionInfo const* m_currentFunctionInfo = nullptr;
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std::map<yul::FunctionCall const*, AbstractAssembly::LabelID> m_returnLabels;
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std::map<CFG::BasicBlock const*, AbstractAssembly::LabelID> m_blockLabels;
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std::map<CFG::FunctionInfo const*, AbstractAssembly::LabelID> const m_functionLabels;
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std::vector<StackTooDeepError> m_stackErrors;
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};
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} |