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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/>.
*/
/**
* Full assembly stack that can support EVM-assembly and Yul as input and EVM, EVM1.5 and
* eWasm as output.
*/
#include <libsolidity/interface/AssemblyStack.h>
#include <libsolidity/codegen/AsmCodeGen.h>
#include <liblangutil/Scanner.h>
#include <libyul/AsmPrinter.h>
#include <libyul/AsmParser.h>
#include <libyul/AsmAnalysis.h>
#include <libyul/AsmAnalysisInfo.h>
#include <libyul/backends/evm/EVMObjectCompiler.h>
#include <libyul/backends/evm/EVMCodeTransform.h>
#include <libyul/backends/evm/EVMAssembly.h>
#include <libyul/backends/evm/EVMDialect.h>
#include <libyul/ObjectParser.h>
#include <libevmasm/Assembly.h>
#include <libyul/optimiser/Suite.h>
using namespace std;
using namespace dev;
using namespace langutil;
using namespace dev::solidity;
namespace
{
shared_ptr<yul::Dialect> languageToDialect(AssemblyStack::Language _language)
{
switch (_language)
{
case AssemblyStack::Language::Assembly:
return yul::EVMDialect::looseAssemblyForEVM();
case AssemblyStack::Language::StrictAssembly:
return yul::EVMDialect::strictAssemblyForEVMObjects();
case AssemblyStack::Language::Yul:
return yul::Dialect::yul();
}
solAssert(false, "");
return yul::Dialect::yul();
}
}
Scanner const& AssemblyStack::scanner() const
{
solAssert(m_scanner, "");
return *m_scanner;
}
bool AssemblyStack::parseAndAnalyze(std::string const& _sourceName, std::string const& _source)
{
m_errors.clear();
m_analysisSuccessful = false;
m_scanner = make_shared<Scanner>(CharStream(_source, _sourceName));
m_parserResult = yul::ObjectParser(m_errorReporter, languageToDialect(m_language)).parse(m_scanner, false);
if (!m_errorReporter.errors().empty())
return false;
solAssert(m_parserResult, "");
solAssert(m_parserResult->code, "");
return analyzeParsed();
}
void AssemblyStack::optimize()
{
solAssert(m_language != Language::Assembly, "Optimization requested for loose assembly.");
solAssert(m_analysisSuccessful, "Analysis was not successful.");
m_analysisSuccessful = false;
optimize(*m_parserResult);
solAssert(analyzeParsed(), "Invalid source code after optimization.");
}
bool AssemblyStack::analyzeParsed()
{
solAssert(m_parserResult, "");
m_analysisSuccessful = analyzeParsed(*m_parserResult);
return m_analysisSuccessful;
}
bool AssemblyStack::analyzeParsed(yul::Object& _object)
{
solAssert(_object.code, "");
_object.analysisInfo = make_shared<yul::AsmAnalysisInfo>();
yul::AsmAnalyzer analyzer(*_object.analysisInfo, m_errorReporter, m_evmVersion, boost::none, languageToDialect(m_language));
bool success = analyzer.analyze(*_object.code);
for (auto& subNode: _object.subObjects)
if (auto subObject = dynamic_cast<yul::Object*>(subNode.get()))
if (!analyzeParsed(*subObject))
success = false;
return success;
}
void AssemblyStack::compileEVM(yul::AbstractAssembly& _assembly, bool _evm15, bool _optimize) const
{
shared_ptr<yul::EVMDialect> dialect;
if (m_language == Language::Assembly)
dialect = yul::EVMDialect::looseAssemblyForEVM();
else if (m_language == AssemblyStack::Language::StrictAssembly)
dialect = yul::EVMDialect::strictAssemblyForEVMObjects();
else if (m_language == AssemblyStack::Language::Yul)
dialect = yul::EVMDialect::yulForEVM();
else
solAssert(false, "Invalid language.");
yul::EVMObjectCompiler::compile(*m_parserResult, _assembly, *dialect, _evm15, _optimize);
}
void AssemblyStack::optimize(yul::Object& _object)
{
solAssert(_object.code, "");
solAssert(_object.analysisInfo, "");
for (auto& subNode: _object.subObjects)
if (auto subObject = dynamic_cast<yul::Object*>(subNode.get()))
optimize(*subObject);
yul::OptimiserSuite::run(*_object.code, *_object.analysisInfo);
}
MachineAssemblyObject AssemblyStack::assemble(Machine _machine, bool _optimize) const
{
solAssert(m_analysisSuccessful, "");
solAssert(m_parserResult, "");
solAssert(m_parserResult->code, "");
solAssert(m_parserResult->analysisInfo, "");
switch (_machine)
{
case Machine::EVM:
{
MachineAssemblyObject object;
eth::Assembly assembly;
EthAssemblyAdapter adapter(assembly);
compileEVM(adapter, false, _optimize);
object.bytecode = make_shared<eth::LinkerObject>(assembly.assemble());
object.assembly = assembly.assemblyString();
return object;
}
case Machine::EVM15:
{
MachineAssemblyObject object;
yul::EVMAssembly assembly(true);
compileEVM(assembly, true, _optimize);
object.bytecode = make_shared<eth::LinkerObject>(assembly.finalize());
/// TODO: fill out text representation
return object;
}
case Machine::eWasm:
solUnimplemented("eWasm backend is not yet implemented.");
}
// unreachable
return MachineAssemblyObject();
}
string AssemblyStack::print() const
{
solAssert(m_parserResult, "");
solAssert(m_parserResult->code, "");
return m_parserResult->toString(m_language == Language::Yul) + "\n";
}
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