mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
307 lines
10 KiB
C++
307 lines
10 KiB
C++
/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @author Christian <c@ethdev.com>
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* @date 2014
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* JSON interface for the solidity compiler to be used from Javascript.
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*/
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#include <string>
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#include <functional>
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#include <iostream>
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#include <json/json.h>
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#include <libdevcore/Common.h>
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#include <libdevcore/CommonData.h>
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#include <libdevcore/CommonIO.h>
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#include <libevmasm/Instruction.h>
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#include <libevmasm/GasMeter.h>
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#include <libsolidity/parsing/Scanner.h>
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#include <libsolidity/parsing/Parser.h>
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#include <libsolidity/ast/ASTPrinter.h>
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#include <libsolidity/analysis/NameAndTypeResolver.h>
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#include <libsolidity/interface/Exceptions.h>
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#include <libsolidity/interface/CompilerStack.h>
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#include <libsolidity/interface/SourceReferenceFormatter.h>
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#include <libsolidity/ast/ASTJsonConverter.h>
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#include <libsolidity/interface/Version.h>
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using namespace std;
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using namespace dev;
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using namespace solidity;
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extern "C" {
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/// Callback used to retrieve additional source files. "Returns" two pointers that should be
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/// heap-allocated and are free'd by the caller.
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typedef void (*CStyleReadFileCallback)(char const* _path, char** o_contents, char** o_error);
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}
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string formatError(
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Exception const& _exception,
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string const& _name,
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function<Scanner const&(string const&)> const& _scannerFromSourceName
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)
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{
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ostringstream errorOutput;
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SourceReferenceFormatter::printExceptionInformation(errorOutput, _exception, _name, _scannerFromSourceName);
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return errorOutput.str();
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}
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Json::Value functionHashes(ContractDefinition const& _contract)
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{
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Json::Value functionHashes(Json::objectValue);
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for (auto const& it: _contract.interfaceFunctions())
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functionHashes[it.second->externalSignature()] = toHex(it.first.ref());
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return functionHashes;
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}
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Json::Value gasToJson(GasEstimator::GasConsumption const& _gas)
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{
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if (_gas.isInfinite || _gas.value > std::numeric_limits<Json::LargestUInt>::max())
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return Json::Value(Json::nullValue);
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else
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return Json::Value(Json::LargestUInt(_gas.value));
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}
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Json::Value estimateGas(CompilerStack const& _compiler, string const& _contract)
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{
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Json::Value gasEstimates(Json::objectValue);
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using Gas = GasEstimator::GasConsumption;
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if (!_compiler.assemblyItems(_contract) && !_compiler.runtimeAssemblyItems(_contract))
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return gasEstimates;
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if (eth::AssemblyItems const* items = _compiler.assemblyItems(_contract))
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{
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Gas gas = GasEstimator::functionalEstimation(*items);
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u256 bytecodeSize(_compiler.runtimeObject(_contract).bytecode.size());
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Json::Value creationGas(Json::arrayValue);
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creationGas[0] = gasToJson(gas);
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creationGas[1] = gasToJson(bytecodeSize * eth::GasCosts::createDataGas);
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gasEstimates["creation"] = creationGas;
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}
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if (eth::AssemblyItems const* items = _compiler.runtimeAssemblyItems(_contract))
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{
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ContractDefinition const& contract = _compiler.contractDefinition(_contract);
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Json::Value externalFunctions(Json::objectValue);
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for (auto it: contract.interfaceFunctions())
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{
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string sig = it.second->externalSignature();
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externalFunctions[sig] = gasToJson(GasEstimator::functionalEstimation(*items, sig));
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}
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if (contract.fallbackFunction())
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externalFunctions[""] = gasToJson(GasEstimator::functionalEstimation(*items, "INVALID"));
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gasEstimates["external"] = externalFunctions;
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Json::Value internalFunctions(Json::objectValue);
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for (auto const& it: contract.definedFunctions())
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{
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if (it->isPartOfExternalInterface() || it->isConstructor())
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continue;
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size_t entry = _compiler.functionEntryPoint(_contract, *it);
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GasEstimator::GasConsumption gas = GasEstimator::GasConsumption::infinite();
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if (entry > 0)
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gas = GasEstimator::functionalEstimation(*items, entry, *it);
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FunctionType type(*it);
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string sig = it->name() + "(";
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auto paramTypes = type.parameterTypes();
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for (auto it = paramTypes.begin(); it != paramTypes.end(); ++it)
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sig += (*it)->toString() + (it + 1 == paramTypes.end() ? "" : ",");
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sig += ")";
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internalFunctions[sig] = gasToJson(gas);
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}
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gasEstimates["internal"] = internalFunctions;
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}
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return gasEstimates;
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}
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string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback _readCallback)
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{
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Json::Value output(Json::objectValue);
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Json::Value errors(Json::arrayValue);
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CompilerStack::ReadFileCallback readCallback;
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if (_readCallback)
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{
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readCallback = [=](string const& _path)
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{
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char* contents_c = nullptr;
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char* error_c = nullptr;
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_readCallback(_path.c_str(), &contents_c, &error_c);
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CompilerStack::ReadFileResult result;
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result.success = true;
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if (!contents_c && !error_c)
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{
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result.success = false;
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result.contentsOrErrorMesage = "File not found.";
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}
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if (contents_c)
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{
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result.success = true;
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result.contentsOrErrorMesage = string(contents_c);
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free(contents_c);
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}
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if (error_c)
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{
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result.success = false;
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result.contentsOrErrorMesage = string(error_c);
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free(error_c);
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}
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return result;
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};
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}
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CompilerStack compiler(true, readCallback);
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auto scannerFromSourceName = [&](string const& _sourceName) -> solidity::Scanner const& { return compiler.scanner(_sourceName); };
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bool success = false;
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try
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{
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compiler.addSources(_sources);
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bool succ = compiler.compile(_optimize);
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for (auto const& error: compiler.errors())
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{
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auto err = dynamic_pointer_cast<Error const>(error);
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errors.append(formatError(
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*error,
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(err->type() == Error::Type::Warning) ? "Warning" : "Error",
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scannerFromSourceName
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));
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}
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success = succ; // keep success false on exception
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}
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catch (Error const& error)
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{
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errors.append(formatError(error, error.typeName(), scannerFromSourceName));
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}
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catch (CompilerError const& exception)
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{
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errors.append(formatError(exception, "Compiler error", scannerFromSourceName));
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}
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catch (InternalCompilerError const& exception)
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{
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errors.append(formatError(exception, "Internal compiler error", scannerFromSourceName));
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}
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catch (Exception const& exception)
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{
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errors.append("Exception during compilation: " + boost::diagnostic_information(exception));
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}
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catch (...)
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{
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errors.append("Unknown exception during compilation.");
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}
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if (errors.size() > 0)
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output["errors"] = errors;
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if (success)
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{
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output["contracts"] = Json::Value(Json::objectValue);
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for (string const& contractName: compiler.contractNames())
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{
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Json::Value contractData(Json::objectValue);
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contractData["interface"] = compiler.interface(contractName);
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contractData["bytecode"] = compiler.object(contractName).toHex();
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contractData["runtimeBytecode"] = compiler.runtimeObject(contractName).toHex();
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contractData["opcodes"] = solidity::disassemble(compiler.object(contractName).bytecode);
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contractData["functionHashes"] = functionHashes(compiler.contractDefinition(contractName));
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contractData["gasEstimates"] = estimateGas(compiler, contractName);
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auto sourceMap = compiler.sourceMapping(contractName);
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contractData["srcmap"] = sourceMap ? *sourceMap : "";
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auto runtimeSourceMap = compiler.runtimeSourceMapping(contractName);
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contractData["srcmapRuntime"] = runtimeSourceMap ? *runtimeSourceMap : "";
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ostringstream unused;
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contractData["assembly"] = compiler.streamAssembly(unused, contractName, _sources, true);
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output["contracts"][contractName] = contractData;
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}
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// Do not taint the internal error list
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ErrorList formalErrors;
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if (compiler.prepareFormalAnalysis(&formalErrors))
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output["formal"]["why3"] = compiler.formalTranslation();
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if (!formalErrors.empty())
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{
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Json::Value errors(Json::arrayValue);
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for (auto const& error: formalErrors)
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errors.append(formatError(
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*error,
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(error->type() == Error::Type::Warning) ? "Warning" : "Error",
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scannerFromSourceName
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));
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output["formal"]["errors"] = errors;
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}
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// Indices into this array are used to abbreviate source names in source locations.
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output["sourceList"] = Json::Value(Json::arrayValue);
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for (auto const& source: compiler.sourceNames())
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output["sourceList"].append(source);
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output["sources"] = Json::Value(Json::objectValue);
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for (auto const& source: compiler.sourceNames())
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output["sources"][source]["AST"] = ASTJsonConverter(compiler.ast(source), compiler.sourceIndices()).json();
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}
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return Json::FastWriter().write(output);
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}
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string compileMulti(string const& _input, bool _optimize, CStyleReadFileCallback _readCallback = nullptr)
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{
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Json::Reader reader;
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Json::Value input;
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if (!reader.parse(_input, input, false))
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{
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Json::Value errors(Json::arrayValue);
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errors.append("Error parsing input JSON: " + reader.getFormattedErrorMessages());
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Json::Value output(Json::objectValue);
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output["errors"] = errors;
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return Json::FastWriter().write(output);
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}
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else
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{
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StringMap sources;
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Json::Value jsonSources = input["sources"];
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if (jsonSources.isObject())
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for (auto const& sourceName: jsonSources.getMemberNames())
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sources[sourceName] = jsonSources[sourceName].asString();
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return compile(sources, _optimize, _readCallback);
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}
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}
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string compileSingle(string const& _input, bool _optimize)
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{
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StringMap sources;
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sources[""] = _input;
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return compile(sources, _optimize, nullptr);
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}
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static string s_outputBuffer;
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extern "C"
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{
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extern char const* version()
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{
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return VersionString.c_str();
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}
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extern char const* compileJSON(char const* _input, bool _optimize)
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{
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s_outputBuffer = compileSingle(_input, _optimize);
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return s_outputBuffer.c_str();
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}
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extern char const* compileJSONMulti(char const* _input, bool _optimize)
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{
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s_outputBuffer = compileMulti(_input, _optimize);
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return s_outputBuffer.c_str();
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}
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extern char const* compileJSONCallback(char const* _input, bool _optimize, CStyleReadFileCallback _readCallback)
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{
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s_outputBuffer = compileMulti(_input, _optimize, _readCallback);
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return s_outputBuffer.c_str();
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}
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}
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