solidity/solc/jsonCompiler.cpp at develop · compumatrix/solidity · GitHub

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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/>.

/**

* @author Christian <c@ethdev.com>

* @date 2014

* JSON interface for the solidity compiler to be used from Javascript.

#include <string>

#include <functional>

#include <iostream>

#include <json/json.h>

#include <libdevcore/Common.h>

#include <libdevcore/CommonData.h>

#include <libdevcore/CommonIO.h>

#include <libevmasm/Instruction.h>

#include <libevmasm/GasMeter.h>

#include <libsolidity/parsing/Scanner.h>

#include <libsolidity/parsing/Parser.h>

#include <libsolidity/ast/ASTPrinter.h>

#include <libsolidity/analysis/NameAndTypeResolver.h>

#include <libsolidity/interface/Exceptions.h>

#include <libsolidity/interface/CompilerStack.h>

#include <libsolidity/interface/SourceReferenceFormatter.h>

#include <libsolidity/ast/ASTJsonConverter.h>

#include <libsolidity/interface/Version.h>

using namespace std;

using namespace dev;

using namespace solidity;

extern "C" {

/// Callback used to retrieve additional source files. "Returns" two pointers that should be

/// heap-allocated and are free'd by the caller.

typedef void (*CStyleReadFileCallback)(char const* _path, char** o_contents, char** o_error);

}

string formatError(

Exception const& _exception,

string const& _name,

function<Scanner const&(string const&)> const& _scannerFromSourceName

)

{

ostringstream errorOutput;

SourceReferenceFormatter::printExceptionInformation(errorOutput, _exception, _name, _scannerFromSourceName);

return errorOutput.str();

}

Json::Value functionHashes(ContractDefinition const& _contract)

{

Json::Value functionHashes(Json::objectValue);

for (auto const& it: _contract.interfaceFunctions())

functionHashes[it.second->externalSignature()] = toHex(it.first.ref());

return functionHashes;

}

Json::Value gasToJson(GasEstimator::GasConsumption const& _gas)

{

if (_gas.isInfinite || _gas.value > std::numeric_limits<Json::LargestUInt>::max())

return Json::Value(Json::nullValue);

else

return Json::Value(Json::LargestUInt(_gas.value));

}

Json::Value estimateGas(CompilerStack const& _compiler, string const& _contract)

{

Json::Value gasEstimates(Json::objectValue);

using Gas = GasEstimator::GasConsumption;

if (!_compiler.assemblyItems(_contract) && !_compiler.runtimeAssemblyItems(_contract))

return gasEstimates;

if (eth::AssemblyItems const* items = _compiler.assemblyItems(_contract))

{

Gas gas = GasEstimator::functionalEstimation(*items);

u256 bytecodeSize(_compiler.runtimeObject(_contract).bytecode.size());

Json::Value creationGas(Json::arrayValue);

creationGas[0] = gasToJson(gas);

creationGas[1] = gasToJson(bytecodeSize * eth::GasCosts::createDataGas);

gasEstimates["creation"] = creationGas;

}

if (eth::AssemblyItems const* items = _compiler.runtimeAssemblyItems(_contract))

{

ContractDefinition const& contract = _compiler.contractDefinition(_contract);

Json::Value externalFunctions(Json::objectValue);

for (auto it: contract.interfaceFunctions())

{

string sig = it.second->externalSignature();

externalFunctions[sig] = gasToJson(GasEstimator::functionalEstimation(*items, sig));

}

if (contract.fallbackFunction())

externalFunctions[""] = gasToJson(GasEstimator::functionalEstimation(*items, "INVALID"));

gasEstimates["external"] = externalFunctions;

Json::Value internalFunctions(Json::objectValue);

for (auto const& it: contract.definedFunctions())

{

if (it->isPartOfExternalInterface() || it->isConstructor())

continue;

size_t entry = _compiler.functionEntryPoint(_contract, *it);

GasEstimator::GasConsumption gas = GasEstimator::GasConsumption::infinite();

if (entry > 0)

gas = GasEstimator::functionalEstimation(*items, entry, *it);

FunctionType type(*it);

string sig = it->name() + "(";

auto paramTypes = type.parameterTypes();

for (auto it = paramTypes.begin(); it != paramTypes.end(); ++it)

sig += (*it)->toString() + (it + 1 == paramTypes.end() ? "" : ",");

sig += ")";

internalFunctions[sig] = gasToJson(gas);

}

gasEstimates["internal"] = internalFunctions;

}

return gasEstimates;

}

string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback _readCallback)

{

Json::Value output(Json::objectValue);

Json::Value errors(Json::arrayValue);

CompilerStack::ReadFileCallback readCallback;

if (_readCallback)

{

readCallback = [=](string const& _path)

{

char* contents_c = nullptr;

char* error_c = nullptr;

_readCallback(_path.c_str(), &contents_c, &error_c);

CompilerStack::ReadFileResult result;

result.success = true;

if (!contents_c && !error_c)

{

result.success = false;

result.contentsOrErrorMesage = "File not found.";

}

if (contents_c)

{

result.success = true;

result.contentsOrErrorMesage = string(contents_c);

free(contents_c);

}

if (error_c)

{

result.success = false;

result.contentsOrErrorMesage = string(error_c);

free(error_c);

}

return result;

};

}

CompilerStack compiler(true, readCallback);

auto scannerFromSourceName = [&](string const& _sourceName) -> solidity::Scanner const& { return compiler.scanner(_sourceName); };

bool success = false;

try

{

compiler.addSources(_sources);

bool succ = compiler.compile(_optimize);

for (auto const& error: compiler.errors())

{

auto err = dynamic_pointer_cast<Error const>(error);

errors.append(formatError(

*error,

(err->type() == Error::Type::Warning) ? "Warning" : "Error",

scannerFromSourceName

));

}

success = succ; // keep success false on exception

}

catch (Error const& error)

{

errors.append(formatError(error, error.typeName(), scannerFromSourceName));

}

catch (CompilerError const& exception)

{

errors.append(formatError(exception, "Compiler error", scannerFromSourceName));

}

catch (InternalCompilerError const& exception)

{

errors.append(formatError(exception, "Internal compiler error", scannerFromSourceName));

}

catch (Exception const& exception)

{

errors.append("Exception during compilation: " + boost::diagnostic_information(exception));

}

catch (...)

{

errors.append("Unknown exception during compilation.");

}

if (errors.size() > 0)

output["errors"] = errors;

if (success)

{

output["contracts"] = Json::Value(Json::objectValue);

for (string const& contractName: compiler.contractNames())

{

Json::Value contractData(Json::objectValue);

contractData["solidity_interface"] = compiler.solidityInterface(contractName);

contractData["interface"] = compiler.interface(contractName);

contractData["bytecode"] = compiler.object(contractName).toHex();

contractData["runtimeBytecode"] = compiler.runtimeObject(contractName).toHex();

contractData["opcodes"] = solidity::disassemble(compiler.object(contractName).bytecode);

contractData["functionHashes"] = functionHashes(compiler.contractDefinition(contractName));

contractData["gasEstimates"] = estimateGas(compiler, contractName);

auto sourceMap = compiler.sourceMapping(contractName);

contractData["srcmap"] = sourceMap ? *sourceMap : "";

auto runtimeSourceMap = compiler.runtimeSourceMapping(contractName);

contractData["srcmap-runtime"] = runtimeSourceMap ? *runtimeSourceMap : "";

ostringstream unused;

contractData["assembly"] = compiler.streamAssembly(unused, contractName, _sources, true);

output["contracts"][contractName] = contractData;

}

// Do not taint the internal error list

ErrorList formalErrors;

if (compiler.prepareFormalAnalysis(&formalErrors))

output["formal"]["why3"] = compiler.formalTranslation();

if (!formalErrors.empty())

{

Json::Value errors(Json::arrayValue);

for (auto const& error: formalErrors)

errors.append(formatError(

*error,

(error->type() == Error::Type::Warning) ? "Warning" : "Error",

scannerFromSourceName

));

output["formal"]["errors"] = errors;

}

// Indices into this array are used to abbreviate source names in source locations.

output["sourceList"] = Json::Value(Json::arrayValue);

for (auto const& source: compiler.sourceNames())

output["sourceList"].append(source);

output["sources"] = Json::Value(Json::objectValue);

for (auto const& source: compiler.sourceNames())

output["sources"][source]["AST"] = ASTJsonConverter(compiler.ast(source), compiler.sourceIndices()).json();

}

return Json::FastWriter().write(output);

}

string compileMulti(string const& _input, bool _optimize, CStyleReadFileCallback _readCallback = nullptr)

{

Json::Reader reader;

Json::Value input;

if (!reader.parse(_input, input, false))

{

Json::Value errors(Json::arrayValue);

errors.append("Error parsing input JSON: " + reader.getFormattedErrorMessages());

Json::Value output(Json::objectValue);

output["errors"] = errors;

return Json::FastWriter().write(output);

}

else

{

StringMap sources;

Json::Value jsonSources = input["sources"];

if (jsonSources.isObject())

for (auto const& sourceName: jsonSources.getMemberNames())

sources[sourceName] = jsonSources[sourceName].asString();

return compile(sources, _optimize, _readCallback);

}

string compileSingle(string const& _input, bool _optimize)

{

StringMap sources;

sources[""] = _input;

return compile(sources, _optimize, nullptr);

}

static string s_outputBuffer;

extern "C"

{

extern char const* version()

{

return VersionString.c_str();

}

extern char const* compileJSON(char const* _input, bool _optimize)

{

s_outputBuffer = compileSingle(_input, _optimize);

return s_outputBuffer.c_str();

}

extern char const* compileJSONMulti(char const* _input, bool _optimize)

{

s_outputBuffer = compileMulti(_input, _optimize);

return s_outputBuffer.c_str();

}

extern char const* compileJSONCallback(char const* _input, bool _optimize, CStyleReadFileCallback _readCallback)

{

s_outputBuffer = compileMulti(_input, _optimize, _readCallback);

return s_outputBuffer.c_str();

}

solidity/solc/jsonCompiler.cpp at develop · compumatrix/solidity · GitHub

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