mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
128 lines
3.9 KiB
C++
128 lines
3.9 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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* Compiler that transforms Yul Objects to EVM bytecode objects.
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*/
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#include <libyul/backends/evm/EVMObjectCompiler.h>
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#include <libyul/backends/evm/EVMCodeTransform.h>
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#include <libyul/backends/evm/EVMDialect.h>
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#include <libyul/backends/evm/OptimizedEVMCodeTransform.h>
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#include <libyul/optimiser/FunctionCallFinder.h>
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#include <libyul/Object.h>
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#include <libyul/Exceptions.h>
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#include <boost/algorithm/string.hpp>
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using namespace solidity::yul;
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void EVMObjectCompiler::compile(
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Object& _object,
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AbstractAssembly& _assembly,
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EVMDialect const& _dialect,
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bool _optimize,
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std::optional<uint8_t> _eofVersion
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)
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{
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EVMObjectCompiler compiler(_assembly, _dialect, _eofVersion);
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compiler.run(_object, _optimize);
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}
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void EVMObjectCompiler::run(Object& _object, bool _optimize)
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{
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BuiltinContext context;
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context.currentObject = &_object;
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for (auto const& subNode: _object.subObjects)
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if (auto* subObject = dynamic_cast<Object*>(subNode.get()))
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{
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bool isCreation = !boost::ends_with(subObject->name.str(), "_deployed");
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auto subAssemblyAndID = m_assembly.createSubAssembly(isCreation, subObject->name.str());
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context.subIDs[subObject->name] = subAssemblyAndID.second;
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subObject->subId = subAssemblyAndID.second;
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compile(*subObject, *subAssemblyAndID.first, m_dialect, _optimize, m_eofVersion);
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}
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else
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{
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Data const& data = dynamic_cast<Data const&>(*subNode);
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// Special handling of metadata.
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if (data.name.str() == Object::metadataName())
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m_assembly.appendToAuxiliaryData(data.data);
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else
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context.subIDs[data.name] = m_assembly.appendData(data.data);
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}
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yulAssert(_object.analysisInfo, "No analysis info.");
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yulAssert(_object.code, "No code.");
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if (m_eofVersion.has_value())
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yulAssert(
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_optimize && (m_dialect.evmVersion() == langutil::EVMVersion()),
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"Experimental EOF support is only available for optimized via-IR compilation and the most recent EVM version."
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);
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if (_optimize && m_dialect.evmVersion().canOverchargeGasForCall())
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{
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auto stackErrors = OptimizedEVMCodeTransform::run(
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m_assembly,
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*_object.analysisInfo,
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*_object.code,
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m_dialect,
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context,
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OptimizedEVMCodeTransform::UseNamedLabels::ForFirstFunctionOfEachName
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);
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if (!stackErrors.empty())
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{
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std::vector<FunctionCall*> memoryGuardCalls = FunctionCallFinder::run(
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*_object.code,
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"memoryguard"_yulstring
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);
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auto stackError = stackErrors.front();
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std::string msg = stackError.comment() ? *stackError.comment() : "";
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if (memoryGuardCalls.empty())
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msg += "\nNo memoryguard was present. "
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"Consider using memory-safe assembly only and annotating it via "
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"'assembly (\"memory-safe\") { ... }'.";
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else
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msg += "\nmemoryguard was present.";
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stackError << util::errinfo_comment(msg);
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BOOST_THROW_EXCEPTION(stackError);
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}
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}
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else
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{
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// We do not catch and re-throw the stack too deep exception here because it is a YulException,
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// which should be native to this part of the code.
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CodeTransform transform{
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m_assembly,
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*_object.analysisInfo,
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*_object.code,
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m_dialect,
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context,
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_optimize,
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{},
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CodeTransform::UseNamedLabels::ForFirstFunctionOfEachName
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};
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transform(*_object.code);
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if (!transform.stackErrors().empty())
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BOOST_THROW_EXCEPTION(transform.stackErrors().front());
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}
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}
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