/*
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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @author Gav Wood <g@ethdev.com>
* @date 2014
* Full-stack compiler that converts a source code string to bytecode.
*/
#include <boost/algorithm/string.hpp>
#include <libsolidity/AST.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Parser.h>
#include <libsolidity/GlobalContext.h>
#include <libsolidity/NameAndTypeResolver.h>
#include <libsolidity/Compiler.h>
#include <libsolidity/CompilerStack.h>
#include <libsolidity/InterfaceHandler.h>
#include <libdevcore/SHA3.h>
using namespace std;
namespace dev
{
namespace solidity
{
const map<string, string> StandardSources = map<string, string>{
{"coin", R"(import "CoinReg";import "Config";import "configUser";contract coin is configUser{function coin(bytes3 name, uint denom) {CoinReg(Config(configAddr()).lookup(3)).register(name, denom);}})"},
{"Coin", R"(contract Coin{function isApprovedFor(address _target,address _proxy)constant returns(bool _r){}function isApproved(address _proxy)constant returns(bool _r){}function sendCoinFrom(address _from,uint256 _val,address _to){}function coinBalanceOf(address _a)constant returns(uint256 _r){}function sendCoin(uint256 _val,address _to){}function coinBalance()constant returns(uint256 _r){}function approve(address _a){}})"},
{"CoinReg", R"(contract CoinReg{function count()constant returns(uint256 r){}function info(uint256 i)constant returns(address addr,bytes3 name,uint256 denom){}function register(bytes3 name,uint256 denom){}function unregister(){}})"},
{"configUser", R"(contract configUser{function configAddr()constant returns(address a){ return 0xc6d9d2cd449a754c494264e1809c50e34d64562b;}})"},
{"Config", R"(contract Config{function lookup(uint256 service)constant returns(address a){}function kill(){}function unregister(uint256 id){}function register(uint256 id,address service){}})"},
{"mortal", R"(import "owned";contract mortal is owned {function kill() { if (msg.sender == owner) suicide(owner); }})"},
{"named", R"(import "Config";import "NameReg";import "configUser";contract named is configUser {function named(bytes32 name) {NameReg(Config(configAddr()).lookup(1)).register(name);}})"},
{"NameReg", R"(contract NameReg{function register(bytes32 name){}function addressOf(bytes32 name)constant returns(address addr){}function unregister(){}function nameOf(address addr)constant returns(bytes32 name){}})"},
{"owned", R"(contract owned{function owned(){owner = msg.sender;}modifier onlyowner(){if(msg.sender==owner)_}address owner;})"},
{"service", R"(import "Config";import "configUser";contract service is configUser{function service(uint _n){Config(configAddr()).register(_n, this);}})"},
{"std", R"(import "owned";import "mortal";import "Config";import "configUser";import "NameReg";import "named";)"}
};
CompilerStack::CompilerStack(bool _addStandardSources):
m_parseSuccessful(false)
{
if (_addStandardSources)
addSources(StandardSources, true); // add them as libraries
}
void CompilerStack::reset(bool _keepSources, bool _addStandardSources)
{
m_parseSuccessful = false;
if (_keepSources)
for (auto sourcePair: m_sources)
sourcePair.second.reset();
else
{
m_sources.clear();
if (_addStandardSources)
addSources(StandardSources, true);
}
m_globalContext.reset();
m_sourceOrder.clear();
m_contracts.clear();
}
bool CompilerStack::addSource(string const& _name, string const& _content, bool _isLibrary)
{
bool existed = m_sources.count(_name) != 0;
reset(true);
m_sources[_name].scanner = make_shared<Scanner>(CharStream(_content), _name);
m_sources[_name].isLibrary = _isLibrary;
return existed;
}
void CompilerStack::setSource(string const& _sourceCode)
{
reset();
addSource("", _sourceCode);
}
void CompilerStack::parse()
{
for (auto& sourcePair: m_sources)
{
sourcePair.second.scanner->reset();
sourcePair.second.ast = Parser().parse(sourcePair.second.scanner);
}
resolveImports();
m_globalContext = make_shared<GlobalContext>();
NameAndTypeResolver resolver(m_globalContext->getDeclarations());
for (Source const* source: m_sourceOrder)
resolver.registerDeclarations(*source->ast);
for (Source const* source: m_sourceOrder)
for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
m_globalContext->setCurrentContract(*contract);
resolver.updateDeclaration(*m_globalContext->getCurrentThis());
resolver.updateDeclaration(*m_globalContext->getCurrentSuper());
resolver.resolveNamesAndTypes(*contract);
m_contracts[contract->getName()].contract = contract;
}
for (Source const* source: m_sourceOrder)
for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
m_globalContext->setCurrentContract(*contract);
resolver.updateDeclaration(*m_globalContext->getCurrentThis());
resolver.checkTypeRequirements(*contract);
m_contracts[contract->getName()].contract = contract;
parseNatspecDocumentation(*contract);
}
m_parseSuccessful = true;
}
void CompilerStack::parseNatspecDocumentation(ContractDefinition& _contract)
{
InterfaceHandler interfaceHandler;
interfaceHandler.generateDevDocumentation(_contract);
interfaceHandler.generateUserDocumentation(_contract);
}
void CompilerStack::parse(string const& _sourceCode)
{
setSource(_sourceCode);
parse();
}
vector<string> CompilerStack::getContractNames() const
{
if (!m_parseSuccessful)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Parsing was not successful."));
vector<string> contractNames;
for (auto const& contract: m_contracts)
contractNames.push_back(contract.first);
return contractNames;
}
void CompilerStack::compile(bool _optimize, unsigned _runs)
{
if (!m_parseSuccessful)
parse();
map<ContractDefinition const*, bytes const*> contractBytecode;
for (Source const* source: m_sourceOrder)
for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
if (!contract->isFullyImplemented())
continue;
shared_ptr<Compiler> compiler = make_shared<Compiler>(_optimize, _runs);
compiler->compileContract(*contract, contractBytecode);
Contract& compiledContract = m_contracts.at(contract->getName());
compiledContract.bytecode = compiler->getAssembledBytecode();
compiledContract.runtimeBytecode = compiler->getRuntimeBytecode();
compiledContract.compiler = move(compiler);
contractBytecode[compiledContract.contract] = &compiledContract.bytecode;
}
}
bytes const& CompilerStack::compile(string const& _sourceCode, bool _optimize)
{
parse(_sourceCode);
compile(_optimize);
return getBytecode();
}
eth::AssemblyItems const* CompilerStack::getAssemblyItems(string const& _contractName) const
{
Contract const& contract = getContract(_contractName);
return contract.compiler ? &getContract(_contractName).compiler->getAssemblyItems() : nullptr;
}
eth::AssemblyItems const* CompilerStack::getRuntimeAssemblyItems(string const& _contractName) const
{
Contract const& contract = getContract(_contractName);
return contract.compiler ? &getContract(_contractName).compiler->getRuntimeAssemblyItems() : nullptr;
}
bytes const& CompilerStack::getBytecode(string const& _contractName) const
{
return getContract(_contractName).bytecode;
}
bytes const& CompilerStack::getRuntimeBytecode(string const& _contractName) const
{
return getContract(_contractName).runtimeBytecode;
}
dev::h256 CompilerStack::getContractCodeHash(string const& _contractName) const
{
return dev::sha3(getRuntimeBytecode(_contractName));
}
Json::Value CompilerStack::streamAssembly(ostream& _outStream, string const& _contractName, StringMap _sourceCodes, bool _inJsonFormat) const
{
Contract const& contract = getContract(_contractName);
if (contract.compiler)
return contract.compiler->streamAssembly(_outStream, _sourceCodes, _inJsonFormat);
else
{
_outStream << "Contract not fully implemented" << endl;
return Json::Value();
}
}
string const& CompilerStack::getInterface(string const& _contractName) const
{
return getMetadata(_contractName, DocumentationType::ABIInterface);
}
string const& CompilerStack::getSolidityInterface(string const& _contractName) const
{
return getMetadata(_contractName, DocumentationType::ABISolidityInterface);
}
string const& CompilerStack::getMetadata(string const& _contractName, DocumentationType _type) const
{
if (!m_parseSuccessful)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Parsing was not successful."));
Contract const& contract = getContract(_contractName);
std::unique_ptr<string const>* doc;
switch (_type)
{
case DocumentationType::NatspecUser:
doc = &contract.userDocumentation;
break;
case DocumentationType::NatspecDev:
doc = &contract.devDocumentation;
break;
case DocumentationType::ABIInterface:
doc = &contract.interface;
break;
case DocumentationType::ABISolidityInterface:
doc = &contract.solidityInterface;
break;
default:
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Illegal documentation type."));
}
if (!*doc)
*doc = contract.interfaceHandler->getDocumentation(*contract.contract, _type);
return *(*doc);
}
Scanner const& CompilerStack::getScanner(string const& _sourceName) const
{
return *getSource(_sourceName).scanner;
}
SourceUnit const& CompilerStack::getAST(string const& _sourceName) const
{
return *getSource(_sourceName).ast;
}
ContractDefinition const& CompilerStack::getContractDefinition(string const& _contractName) const
{
return *getContract(_contractName).contract;
}
size_t CompilerStack::getFunctionEntryPoint(
std::string const& _contractName,
FunctionDefinition const& _function
) const
{
shared_ptr<Compiler> const& compiler = getContract(_contractName).compiler;
if (!compiler)
return 0;
eth::AssemblyItem tag = compiler->getFunctionEntryLabel(_function);
if (tag.type() == eth::UndefinedItem)
return 0;
eth::AssemblyItems const& items = compiler->getRuntimeAssemblyItems();
for (size_t i = 0; i < items.size(); ++i)
if (items.at(i).type() == eth::Tag && items.at(i).data() == tag.data())
return i;
return 0;
}
bytes CompilerStack::staticCompile(std::string const& _sourceCode, bool _optimize)
{
CompilerStack stack;
return stack.compile(_sourceCode, _optimize);
}
tuple<int, int, int, int> CompilerStack::positionFromSourceLocation(SourceLocation const& _sourceLocation) const
{
int startLine;
int startColumn;
int endLine;
int endColumn;
tie(startLine, startColumn) = getScanner(*_sourceLocation.sourceName).translatePositionToLineColumn(_sourceLocation.start);
tie(endLine, endColumn) = getScanner(*_sourceLocation.sourceName).translatePositionToLineColumn(_sourceLocation.end);
return make_tuple(++startLine, ++startColumn, ++endLine, ++endColumn);
}
void CompilerStack::resolveImports()
{
// topological sorting (depth first search) of the import graph, cutting potential cycles
vector<Source const*> sourceOrder;
set<Source const*> sourcesSeen;
function<void(Source const*)> toposort = [&](Source const* _source)
{
if (sourcesSeen.count(_source))
return;
sourcesSeen.insert(_source);
for (ASTPointer<ASTNode> const& node: _source->ast->getNodes())
if (ImportDirective const* import = dynamic_cast<ImportDirective*>(node.get()))
{
string const& id = import->getIdentifier();
if (!m_sources.count(id))
BOOST_THROW_EXCEPTION(ParserError()
<< errinfo_sourceLocation(import->getLocation())
<< errinfo_comment("Source not found."));
toposort(&m_sources[id]);
}
sourceOrder.push_back(_source);
};
for (auto const& sourcePair: m_sources)
if (!sourcePair.second.isLibrary)
toposort(&sourcePair.second);
swap(m_sourceOrder, sourceOrder);
}
std::string CompilerStack::defaultContractName() const
{
return getContract("").contract->getName();
}
CompilerStack::Contract const& CompilerStack::getContract(string const& _contractName) const
{
if (m_contracts.empty())
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("No compiled contracts found."));
string contractName = _contractName;
if (_contractName.empty())
// try to find some user-supplied contract
for (auto const& it: m_sources)
if (!StandardSources.count(it.first))
for (ASTPointer<ASTNode> const& node: it.second.ast->getNodes())
if (auto contract = dynamic_cast<ContractDefinition const*>(node.get()))
contractName = contract->getName();
auto it = m_contracts.find(contractName);
if (it == m_contracts.end())
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Contract " + _contractName + " not found."));
return it->second;
}
CompilerStack::Source const& CompilerStack::getSource(string const& _sourceName) const
{
auto it = m_sources.find(_sourceName);
if (it == m_sources.end())
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Given source file not found."));
return it->second;
}
CompilerStack::Contract::Contract(): interfaceHandler(make_shared<InterfaceHandler>()) {}
}
}