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/*
This file is part of cpp-ethereum.
cpp-ethereum 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.
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file CodeModel.cpp
* @author Arkadiy Paronyan arkadiy@ethdev.com
* @date 2014
* Ethereum IDE client.
*/
#include <sstream>
#include <memory>
#include <QDebug>
#include <QApplication>
#include <QtQml>
#include <libdevcore/Common.h>
#include <libevmasm/SourceLocation.h>
#include <libsolidity/AST.h>
#include <libsolidity/Types.h>
#include <libsolidity/ASTVisitor.h>
#include <libsolidity/CompilerStack.h>
#include <libsolidity/SourceReferenceFormatter.h>
#include <libsolidity/InterfaceHandler.h>
#include <libsolidity/GasEstimator.h>
#include <libsolidity/SourceReferenceFormatter.h>
#include <libevmcore/Instruction.h>
#include <libethcore/CommonJS.h>
#include "QContractDefinition.h"
#include "QFunctionDefinition.h"
#include "QVariableDeclaration.h"
#include "CodeHighlighter.h"
#include "FileIo.h"
#include "CodeModel.h"
using namespace dev::mix;
const std::set<std::string> c_predefinedContracts =
{ "Config", "Coin", "CoinReg", "coin", "service", "owned", "mortal", "NameReg", "named", "std", "configUser" };
namespace
{
using namespace dev::eth;
using namespace dev::solidity;
class CollectLocalsVisitor: public ASTConstVisitor
{
public:
CollectLocalsVisitor(QHash<LocationPair, SolidityDeclaration>* _locals):
m_locals(_locals), m_functionScope(false) {}
private:
LocationPair nodeLocation(ASTNode const& _node)
{
return LocationPair(_node.getLocation().start, _node.getLocation().end);
}
virtual bool visit(FunctionDefinition const&) override
{
m_functionScope = true;
return true;
}
virtual void endVisit(FunctionDefinition const&) override
{
m_functionScope = false;
}
virtual bool visit(VariableDeclaration const& _node) override
{
SolidityDeclaration decl;
decl.type = CodeModel::nodeType(_node.getType().get());
decl.name = QString::fromStdString(_node.getName());
decl.slot = 0;
decl.offset = 0;
if (m_functionScope)
m_locals->insert(nodeLocation(_node), decl);
return true;
}
private:
QHash<LocationPair, SolidityDeclaration>* m_locals;
bool m_functionScope;
};
class CollectLocationsVisitor: public ASTConstVisitor
{
public:
CollectLocationsVisitor(SourceMap* _sourceMap):
m_sourceMap(_sourceMap) {}
private:
LocationPair nodeLocation(ASTNode const& _node)
{
return LocationPair(_node.getLocation().start, _node.getLocation().end);
}
virtual bool visit(FunctionDefinition const& _node) override
{
m_sourceMap->functions.insert(nodeLocation(_node), QString::fromStdString(_node.getName()));
return true;
}
virtual bool visit(ContractDefinition const& _node) override
{
m_sourceMap->contracts.insert(nodeLocation(_node), QString::fromStdString(_node.getName()));
return true;
}
private:
SourceMap* m_sourceMap;
};
QHash<unsigned, SolidityDeclarations> collectStorage(dev::solidity::ContractDefinition const& _contract)
{
QHash<unsigned, SolidityDeclarations> result;
dev::solidity::ContractType contractType(_contract);
for (auto v : contractType.getStateVariables())
{
dev::solidity::VariableDeclaration const* declaration = std::get<0>(v);
dev::u256 slot = std::get<1>(v);
unsigned offset = std::get<2>(v);
result[static_cast<unsigned>(slot)].push_back(SolidityDeclaration { QString::fromStdString(declaration->getName()), CodeModel::nodeType(declaration->getType().get()), slot, offset });
}
return result;
}
} //namespace
void BackgroundWorker::queueCodeChange(int _jobId)
{
m_model->runCompilationJob(_jobId);
}
CompiledContract::CompiledContract(const dev::solidity::CompilerStack& _compiler, QString const& _contractName, QString const& _source):
QObject(nullptr),
m_sourceHash(qHash(_source))
{
std::string name = _contractName.toStdString();
ContractDefinition const& contractDefinition = _compiler.getContractDefinition(name);
m_contract.reset(new QContractDefinition(nullptr, &contractDefinition));
QQmlEngine::setObjectOwnership(m_contract.get(), QQmlEngine::CppOwnership);
m_contract->moveToThread(QApplication::instance()->thread());
m_bytes = _compiler.getBytecode(_contractName.toStdString());
dev::solidity::InterfaceHandler interfaceHandler;
m_contractInterface = QString::fromStdString(*interfaceHandler.getABIInterface(contractDefinition));
if (m_contractInterface.isEmpty())
m_contractInterface = "[]";
if (contractDefinition.getLocation().sourceName.get())
m_documentId = QString::fromStdString(*contractDefinition.getLocation().sourceName);
CollectLocalsVisitor visitor(&m_locals);
m_storage = collectStorage(contractDefinition);
contractDefinition.accept(visitor);
m_assemblyItems = *_compiler.getRuntimeAssemblyItems(name);
m_constructorAssemblyItems = *_compiler.getAssemblyItems(name);
}
QString CompiledContract::codeHex() const
{
return QString::fromStdString(toJS(m_bytes));
}
CodeModel::CodeModel():
m_compiling(false),
m_codeHighlighterSettings(new CodeHighlighterSettings()),
m_backgroundWorker(this),
m_backgroundJobId(0)
{
m_backgroundThread.start();
m_backgroundWorker.moveToThread(&m_backgroundThread);
connect(this, &CodeModel::scheduleCompilationJob, &m_backgroundWorker, &BackgroundWorker::queueCodeChange, Qt::QueuedConnection);
qRegisterMetaType<CompiledContract*>("CompiledContract*");
qRegisterMetaType<QContractDefinition*>("QContractDefinition*");
qRegisterMetaType<QFunctionDefinition*>("QFunctionDefinition*");
qRegisterMetaType<QVariableDeclaration*>("QVariableDeclaration*");
qmlRegisterType<QFunctionDefinition>("org.ethereum.qml", 1, 0, "QFunctionDefinition");
qmlRegisterType<QVariableDeclaration>("org.ethereum.qml", 1, 0, "QVariableDeclaration");
}
CodeModel::~CodeModel()
{
stop();
disconnect(this);
releaseContracts();
if (m_gasCostsMaps)
delete m_gasCostsMaps;
}
void CodeModel::stop()
{
///@todo: cancel bg job
m_backgroundThread.exit();
m_backgroundThread.wait();
}
void CodeModel::reset(QVariantMap const& _documents)
{
///@todo: cancel bg job
Guard l(x_contractMap);
releaseContracts();
Guard pl(x_pendingContracts);
m_pendingContracts.clear();
for (QVariantMap::const_iterator d = _documents.cbegin(); d != _documents.cend(); ++d)
m_pendingContracts[d.key()] = d.value().toString();
// launch the background thread
m_compiling = true;
emit stateChanged();
emit scheduleCompilationJob(++m_backgroundJobId);
}
void CodeModel::unregisterContractSrc(QString const& _documentId)
{
{
Guard pl(x_pendingContracts);
m_pendingContracts.erase(_documentId);
}
// launch the background thread
m_compiling = true;
emit stateChanged();
emit scheduleCompilationJob(++m_backgroundJobId);
}
void CodeModel::registerCodeChange(QString const& _documentId, QString const& _code)
{
{
Guard pl(x_pendingContracts);
m_pendingContracts[_documentId] = _code;
}
// launch the background thread
m_compiling = true;
emit stateChanged();
emit scheduleCompilationJob(++m_backgroundJobId);
}
QVariantMap CodeModel::contracts() const
{
QVariantMap result;
Guard l(x_contractMap);
for (ContractMap::const_iterator c = m_contractMap.cbegin(); c != m_contractMap.cend(); ++c)
result.insert(c.key(), QVariant::fromValue(c.value()));
return result;
}
CompiledContract* CodeModel::contractByDocumentId(QString const& _documentId) const
{
Guard l(x_contractMap);
for (ContractMap::const_iterator c = m_contractMap.cbegin(); c != m_contractMap.cend(); ++c)
if (c.value()->m_documentId == _documentId)
return c.value();
return nullptr;
}
CompiledContract const& CodeModel::contract(QString const& _name) const
{
Guard l(x_contractMap);
CompiledContract* res = m_contractMap.value(_name);
if (res == nullptr)
BOOST_THROW_EXCEPTION(dev::Exception() << dev::errinfo_comment("Contract not found: " + _name.toStdString()));
return *res;
}
CompiledContract const* CodeModel::tryGetContract(QString const& _name) const
{
Guard l(x_contractMap);
CompiledContract* res = m_contractMap.value(_name);
return res;
}
void CodeModel::releaseContracts()
{
for (ContractMap::iterator c = m_contractMap.begin(); c != m_contractMap.end(); ++c)
c.value()->deleteLater();
m_contractMap.clear();
m_sourceMaps.clear();
}
void CodeModel::runCompilationJob(int _jobId)
{
if (_jobId != m_backgroundJobId)
return; //obsolete job
solidity::CompilerStack cs(true);
try
{
cs.addSource("configUser", R"(contract configUser{function configAddr()constant returns(address a){ return 0xf025d81196b72fba60a1d4dddad12eeb8360d828;}})");
std::vector<std::string> sourceNames;
{
Guard l(x_pendingContracts);
for (auto const& c: m_pendingContracts)
{
cs.addSource(c.first.toStdString(), c.second.toStdString());
sourceNames.push_back(c.first.toStdString());
}
}
cs.compile(m_optimizeCode);
gasEstimation(cs);
collectContracts(cs, sourceNames);
}
catch (dev::Exception const& _exception)
{
std::stringstream error;
solidity::SourceReferenceFormatter::printExceptionInformation(error, _exception, "Error", cs);
QString message = QString::fromStdString(error.str());
QVariantMap firstLocation;
QVariantList secondLocations;
if (SourceLocation const* first = boost::get_error_info<solidity::errinfo_sourceLocation>(_exception))
firstLocation = resolveCompilationErrorLocation(cs, *first);
if (SecondarySourceLocation const* second = boost::get_error_info<solidity::errinfo_secondarySourceLocation>(_exception))
{
for (auto const& c: second->infos)
secondLocations.push_back(resolveCompilationErrorLocation(cs, c.second));
}
compilationError(message, firstLocation, secondLocations);
}
m_compiling = false;
emit stateChanged();
}
QVariantMap CodeModel::resolveCompilationErrorLocation(CompilerStack const& _compiler, SourceLocation const& _location)
{
std::tuple<int, int, int, int> pos = _compiler.positionFromSourceLocation(_location);
QVariantMap startError;
startError.insert("line", std::get<0>(pos) > 1 ? (std::get<0>(pos) - 1) : 1);
startError.insert("column", std::get<1>(pos) > 1 ? (std::get<1>(pos) - 1) : 1);
QVariantMap endError;
endError.insert("line", std::get<2>(pos) > 1 ? (std::get<2>(pos) - 1) : 1);
endError.insert("column", std::get<3>(pos) > 1 ? (std::get<3>(pos) - 1) : 1);
QVariantMap error;
error.insert("start", startError);
error.insert("end", endError);
QString sourceName;
if (_location.sourceName)
sourceName = QString::fromStdString(*_location.sourceName);
error.insert("source", sourceName);
if (!sourceName.isEmpty())
if (CompiledContract* contract = contractByDocumentId(sourceName))
sourceName = contract->contract()->name(); //substitute the location to match our contract names
error.insert("contractName", sourceName);
return error;
}
void CodeModel::gasEstimation(solidity::CompilerStack const& _cs)
{
if (m_gasCostsMaps)
m_gasCostsMaps->deleteLater();
m_gasCostsMaps = new GasMapWrapper;
for (std::string n: _cs.getContractNames())
{
ContractDefinition const& contractDefinition = _cs.getContractDefinition(n);
QString sourceName = QString::fromStdString(*contractDefinition.getLocation().sourceName);
if (!m_gasCostsMaps->contains(sourceName))
m_gasCostsMaps->insert(sourceName, QVariantList());
if (!contractDefinition.isFullyImplemented())
continue;
dev::solidity::SourceUnit const& sourceUnit = _cs.getAST(*contractDefinition.getLocation().sourceName);
AssemblyItems const* items = _cs.getRuntimeAssemblyItems(n);
std::map<ASTNode const*, GasMeter::GasConsumption> gasCosts = GasEstimator::breakToStatementLevel(GasEstimator::structuralEstimation(*items, std::vector<ASTNode const*>({&sourceUnit})), {&sourceUnit});
auto gasToString = [](GasMeter::GasConsumption const& _gas)
{
if (_gas.isInfinite)
return QString("0");
else
return QString::fromStdString(toString(_gas.value));
};
// Structural gas costs (per opcode)
for (auto gasItem = gasCosts.begin(); gasItem != gasCosts.end(); ++gasItem)
{
SourceLocation const& location = gasItem->first->getLocation();
GasMeter::GasConsumption cost = gasItem->second;
m_gasCostsMaps->push(sourceName, location.start, location.end, gasToString(cost), cost.isInfinite, GasMap::type::Statement);
}
eth::AssemblyItems const& runtimeAssembly = *_cs.getRuntimeAssemblyItems(n);
QString contractName = QString::fromStdString(contractDefinition.getName());
// Functional gas costs (per function, but also for accessors)
for (auto it: contractDefinition.getInterfaceFunctions())
{
if (!it.second->hasDeclaration())
continue;
SourceLocation loc = it.second->getDeclaration().getLocation();
GasMeter::GasConsumption cost = GasEstimator::functionalEstimation(runtimeAssembly, it.second->externalSignature());
m_gasCostsMaps->push(sourceName, loc.start, loc.end, gasToString(cost), cost.isInfinite, GasMap::type::Function,
contractName, QString::fromStdString(it.second->getDeclaration().getName()));
}
if (auto const* fallback = contractDefinition.getFallbackFunction())
{
SourceLocation loc = fallback->getLocation();
GasMeter::GasConsumption cost = GasEstimator::functionalEstimation(runtimeAssembly, "INVALID");
m_gasCostsMaps->push(sourceName, loc.start, loc.end, gasToString(cost), cost.isInfinite, GasMap::type::Function,
contractName, "fallback");
}
for (auto const& it: contractDefinition.getDefinedFunctions())
{
if (it->isPartOfExternalInterface() || it->isConstructor())
continue;
SourceLocation loc = it->getLocation();
size_t entry = _cs.getFunctionEntryPoint(n, *it);
GasEstimator::GasConsumption cost = GasEstimator::GasConsumption::infinite();
if (entry > 0)
cost = GasEstimator::functionalEstimation(runtimeAssembly, entry, *it);
m_gasCostsMaps->push(sourceName, loc.start, loc.end, gasToString(cost), cost.isInfinite, GasMap::type::Function,
contractName, QString::fromStdString(it->getName()));
}
if (auto const* constructor = contractDefinition.getConstructor())
{
SourceLocation loc = constructor->getLocation();
GasMeter::GasConsumption cost = GasEstimator::functionalEstimation(*_cs.getAssemblyItems(n));
m_gasCostsMaps->push(sourceName, loc.start, loc.end, gasToString(cost), cost.isInfinite, GasMap::type::Constructor,
contractName, contractName);
}
}
}
QVariantList CodeModel::gasCostByDocumentId(QString const& _documentId) const
{
if (m_gasCostsMaps)
return m_gasCostsMaps->gasCostsByDocId(_documentId);
else
return QVariantList();
}
QVariantList CodeModel::gasCostBy(QString const& _contractName, QString const& _functionName) const
{
if (m_gasCostsMaps)
return m_gasCostsMaps->gasCostsBy(_contractName, _functionName);
else
return QVariantList();
}
void CodeModel::collectContracts(dev::solidity::CompilerStack const& _cs, std::vector<std::string> const& _sourceNames)
{
Guard pl(x_pendingContracts);
Guard l(x_contractMap);
ContractMap result;
SourceMaps sourceMaps;
for (std::string const& sourceName: _sourceNames)
{
dev::solidity::SourceUnit const& source = _cs.getAST(sourceName);
SourceMap sourceMap;
CollectLocationsVisitor collector(&sourceMap);
source.accept(collector);
sourceMaps.insert(QString::fromStdString(sourceName), std::move(sourceMap));
}
for (std::string n: _cs.getContractNames())
{
if (c_predefinedContracts.count(n) != 0)
continue;
QString name = QString::fromStdString(n);
ContractDefinition const& contractDefinition = _cs.getContractDefinition(n);
if (!contractDefinition.isFullyImplemented())
continue;
QString sourceName = QString::fromStdString(*contractDefinition.getLocation().sourceName);
auto sourceIter = m_pendingContracts.find(sourceName);
QString source = sourceIter != m_pendingContracts.end() ? sourceIter->second : QString();
CompiledContract* contract = new CompiledContract(_cs, name, source);
QQmlEngine::setObjectOwnership(contract, QQmlEngine::CppOwnership);
result[name] = contract;
CompiledContract* prevContract = nullptr;
// find previous contract by name
for (ContractMap::const_iterator c = m_contractMap.cbegin(); c != m_contractMap.cend(); ++c)
if (c.value()->contract()->name() == contract->contract()->name())
prevContract = c.value();
// if not found, try by documentId
if (!prevContract)
{
for (ContractMap::const_iterator c = m_contractMap.cbegin(); c != m_contractMap.cend(); ++c)
if (c.value()->documentId() == contract->documentId())
{
//make sure there are no other contracts in the same source, otherwise it is not a rename
if (!std::any_of(result.begin(),result.end(), [=](ContractMap::const_iterator::value_type _v) { return _v != contract && _v->documentId() == contract->documentId(); }))
prevContract = c.value();
}
}
if (prevContract != nullptr && prevContract->contractInterface() != result[name]->contractInterface())
emit contractInterfaceChanged(name);
if (prevContract == nullptr)
emit newContractCompiled(name);
else if (prevContract->contract()->name() != name)
emit contractRenamed(contract->documentId(), prevContract->contract()->name(), name);
}
releaseContracts();
m_contractMap.swap(result);
m_sourceMaps.swap(sourceMaps);
emit codeChanged();
emit compilationComplete();
}
bool CodeModel::hasContract() const
{
Guard l(x_contractMap);
return m_contractMap.size() != 0;
}
dev::bytes const& CodeModel::getStdContractCode(const QString& _contractName, const QString& _url)
{
auto cached = m_compiledContracts.find(_contractName);
if (cached != m_compiledContracts.end())
return cached->second;
FileIo fileIo;
std::string source = fileIo.readFile(_url).toStdString();
solidity::CompilerStack cs(false);
cs.setSource(source);
cs.compile(false);
for (std::string const& name: cs.getContractNames())
{
dev::bytes code = cs.getBytecode(name);
m_compiledContracts.insert(std::make_pair(QString::fromStdString(name), std::move(code)));
}
return m_compiledContracts.at(_contractName);
}
void CodeModel::retrieveSubType(SolidityType& _wrapperType, dev::solidity::Type const* _type)
{
if (_type->getCategory() == Type::Category::Array)
{
ArrayType const* arrayType = dynamic_cast<ArrayType const*>(_type);
_wrapperType.baseType = std::make_shared<dev::mix::SolidityType const>(nodeType(arrayType->getBaseType().get()));
}
}
SolidityType CodeModel::nodeType(dev::solidity::Type const* _type)
{
SolidityType r { SolidityType::Type::UnsignedInteger, 32, 1, false, false, QString::fromStdString(_type->toString()), std::vector<SolidityDeclaration>(), std::vector<QString>(), nullptr };
if (!_type)
return r;
switch (_type->getCategory())
{
case Type::Category::Integer:
{
IntegerType const* it = dynamic_cast<IntegerType const*>(_type);
r.size = it->getNumBits() / 8;
r.type = it->isAddress() ? SolidityType::Type::Address : it->isSigned() ? SolidityType::Type::SignedInteger : SolidityType::Type::UnsignedInteger;
}
break;
case Type::Category::Bool:
r.type = SolidityType::Type::Bool;
break;
case Type::Category::FixedBytes:
{
FixedBytesType const* b = dynamic_cast<FixedBytesType const*>(_type);
r.type = SolidityType::Type::Bytes;
r.size = static_cast<unsigned>(b->getNumBytes());
}
break;
case Type::Category::Contract:
r.type = SolidityType::Type::Address;
break;
case Type::Category::Array:
{
ArrayType const* array = dynamic_cast<ArrayType const*>(_type);
if (array->isString())
r.type = SolidityType::Type::String;
else if (array->isByteArray())
r.type = SolidityType::Type::Bytes;
else
{
SolidityType elementType = nodeType(array->getBaseType().get());
elementType.name = r.name;
r = elementType;
}
r.count = static_cast<unsigned>(array->getLength());
r.dynamicSize = _type->isDynamicallySized();
r.array = true;
retrieveSubType(r, _type);
}
break;
case Type::Category::Enum:
{
r.type = SolidityType::Type::Enum;
EnumType const* e = dynamic_cast<EnumType const*>(_type);
for(auto const& enumValue: e->getEnumDefinition().getMembers())
r.enumNames.push_back(QString::fromStdString(enumValue->getName()));
}
break;
case Type::Category::Struct:
{
r.type = SolidityType::Type::Struct;
StructType const* s = dynamic_cast<StructType const*>(_type);
for(auto const& structMember: s->getMembers())
{
auto slotAndOffset = s->getStorageOffsetsOfMember(structMember.name);
r.members.push_back(SolidityDeclaration { QString::fromStdString(structMember.name), nodeType(structMember.type.get()), slotAndOffset.first, slotAndOffset.second });
}
}
break;
case Type::Category::Function:
case Type::Category::IntegerConstant:
case Type::Category::Magic:
case Type::Category::Mapping:
case Type::Category::Modifier:
case Type::Category::Real:
case Type::Category::TypeType:
case Type::Category::Void:
default:
break;
}
return r;
}
bool CodeModel::isContractOrFunctionLocation(dev::SourceLocation const& _location)
{
if (!_location.sourceName)
return false;
Guard l(x_contractMap);
auto sourceMapIter = m_sourceMaps.find(QString::fromStdString(*_location.sourceName));
if (sourceMapIter != m_sourceMaps.cend())
{
LocationPair location(_location.start, _location.end);
return sourceMapIter.value().contracts.contains(location) || sourceMapIter.value().functions.contains(location);
}
return false;
}
QString CodeModel::resolveFunctionName(dev::SourceLocation const& _location)
{
if (!_location.sourceName)
return QString();
Guard l(x_contractMap);
auto sourceMapIter = m_sourceMaps.find(QString::fromStdString(*_location.sourceName));
if (sourceMapIter != m_sourceMaps.cend())
{
LocationPair location(_location.start, _location.end);
auto functionNameIter = sourceMapIter.value().functions.find(location);
if (functionNameIter != sourceMapIter.value().functions.cend())
return functionNameIter.value();
}
return QString();
}
void CodeModel::setOptimizeCode(bool _value)
{
m_optimizeCode = _value;
emit scheduleCompilationJob(++m_backgroundJobId);
}
void GasMapWrapper::push(QString _source, int _start, int _end, QString _value, bool _isInfinite, GasMap::type _type, QString _contractName, QString _functionName)
{
GasMap* gas = new GasMap(_start, _end, _value, _isInfinite, _type, _contractName, _functionName, this);
m_gasMaps.find(_source).value().push_back(QVariant::fromValue(gas));
}
bool GasMapWrapper::contains(QString _key)
{
return m_gasMaps.contains(_key);
}
void GasMapWrapper::insert(QString _source, QVariantList _variantList)
{
m_gasMaps.insert(_source, _variantList);
}
QVariantList GasMapWrapper::gasCostsByDocId(QString _source)
{
auto gasIter = m_gasMaps.find(_source);
if (gasIter != m_gasMaps.end())
return gasIter.value();
else
return QVariantList();
}
QVariantList GasMapWrapper::gasCostsBy(QString _contractName, QString _functionName)
{
QVariantList gasMap;
for (auto const& map: m_gasMaps)
{
for (auto const& gas: map)
{
if (gas.value<GasMap*>()->contractName() == _contractName && (_functionName.isEmpty() || gas.value<GasMap*>()->functionName() == _functionName))
gasMap.push_back(gas);
}
}
return gasMap;
}