mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
332 lines
10 KiB
C++
332 lines
10 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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/**
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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 <libdevcore/JSON.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/StandardCompiler.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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ReadFile::Callback wrapReadCallback(CStyleReadFileCallback _readCallback = nullptr)
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{
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ReadFile::Callback 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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ReadFile::Result 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.contentsOrErrorMessage = "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.contentsOrErrorMessage = 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.contentsOrErrorMessage = 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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return readCallback;
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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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/// Translates a gas value as a string to a JSON number or null
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Json::Value gasToJson(Json::Value const& _value)
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{
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if (_value.isObject())
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{
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Json::Value ret = Json::objectValue;
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for (auto const& sig: _value.getMemberNames())
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ret[sig] = gasToJson(_value[sig]);
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return ret;
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}
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if (_value == "infinite")
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return Json::Value(Json::nullValue);
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u256 value(_value.asString());
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if (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(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 estimates = _compiler.gasEstimates(_contract);
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Json::Value output(Json::objectValue);
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if (estimates["creation"].isObject())
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{
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Json::Value creation(Json::arrayValue);
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creation[0] = gasToJson(estimates["creation"]["executionCost"]);
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creation[1] = gasToJson(estimates["creation"]["codeDepositCost"]);
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output["creation"] = creation;
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}
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else
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output["creation"] = Json::objectValue;
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output["external"] = gasToJson(estimates.get("external", Json::objectValue));
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output["internal"] = gasToJson(estimates.get("internal", Json::objectValue));
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return output;
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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 compiler(wrapReadCallback(_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(SourceReferenceFormatter::formatExceptionInformation(
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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(SourceReferenceFormatter::formatExceptionInformation(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(SourceReferenceFormatter::formatExceptionInformation(exception, "Compiler error (" + exception.lineInfo() + ")", scannerFromSourceName));
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}
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catch (InternalCompilerError const& exception)
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{
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errors.append(SourceReferenceFormatter::formatExceptionInformation(exception, "Internal compiler error (" + exception.lineInfo() + ")", scannerFromSourceName));
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}
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catch (UnimplementedFeatureError const& exception)
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{
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errors.append(SourceReferenceFormatter::formatExceptionInformation(exception, "Unimplemented feature (" + exception.lineInfo() + ")", 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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try
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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"] = dev::jsonCompactPrint(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["metadata"] = compiler.onChainMetadata(contractName);
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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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}
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catch (...)
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{
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output["errors"].append("Unknown exception while generating contract data output.");
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}
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try
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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(SourceReferenceFormatter::formatExceptionInformation(
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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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}
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catch (...)
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{
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output["errors"].append("Unknown exception while generating formal method output.");
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}
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try
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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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catch (...)
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{
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output["errors"].append("Unknown exception while generating source name output.");
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}
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}
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try
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{
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return dev::jsonCompactPrint(output);
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}
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catch (...)
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{
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return "{\"errors\":[\"Unknown error while generating JSON.\"]}";
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}
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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 dev::jsonCompactPrint(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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string compileStandardInternal(string const& _input, CStyleReadFileCallback _readCallback = nullptr)
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{
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StandardCompiler compiler(wrapReadCallback(_readCallback));
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return compiler.compile(_input);
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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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extern char const* compileStandard(char const* _input, CStyleReadFileCallback _readCallback)
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{
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s_outputBuffer = compileStandardInternal(_input, _readCallback);
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return s_outputBuffer.c_str();
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}
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}
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