path: root/jsonCompiler.cpp

/*
    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 <iostream>
#include <json/json.h>
#include <libdevcore/Common.h>
#include <libdevcore/CommonData.h>
#include <libdevcore/CommonIO.h>
#include <libevmcore/Instruction.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Parser.h>
#include <libsolidity/ASTPrinter.h>
#include <libsolidity/NameAndTypeResolver.h>
#include <libsolidity/Exceptions.h>
#include <libsolidity/CompilerStack.h>
#include <libsolidity/SourceReferenceFormatter.h>
#include <libsolidity/ASTJsonConverter.h>

using namespace std;
using namespace dev;
using namespace solidity;

string formatError(Exception const& _exception, string const& _name, CompilerStack const& _compiler)
{
    ostringstream errorOutput;
    SourceReferenceFormatter::printExceptionInformation(errorOutput, _exception, _name, _compiler);

    Json::Value output(Json::objectValue);
    output["error"] = errorOutput.str();
    return Json::FastWriter().write(output);
}

Json::Value functionHashes(ContractDefinition const& _contract)
{
    Json::Value functionHashes(Json::objectValue);
    for (auto const& it: _contract.getInterfaceFunctions())
        functionHashes[it.second->externalSignature()] = toHex(it.first.ref());
    return functionHashes;
}

string compile(string _input, bool _optimize)
{
    StringMap sources;
    sources[""] = _input;

    Json::Value output(Json::objectValue);
    CompilerStack compiler;
    try
    {
        compiler.compile(_input, _optimize);
    }
    catch (ParserError const& exception)
    {
        return formatError(exception, "Parser error", compiler);
    }
    catch (DeclarationError const& exception)
    {
        return formatError(exception, "Declaration error", compiler);
    }
    catch (TypeError const& exception)
    {
        return formatError(exception, "Type error", compiler);
    }
    catch (CompilerError const& exception)
    {
        return formatError(exception, "Compiler error", compiler);
    }
    catch (InternalCompilerError const& exception)
    {
        return formatError(exception, "Internal compiler error", compiler);
    }
    catch (Exception const& exception)
    {
        output["error"] = "Exception during compilation: " + boost::diagnostic_information(exception);
        return Json::FastWriter().write(output);
    }
    catch (...)
    {
        output["error"] = "Unknown exception during compilation.";
        return Json::FastWriter().write(output);
    }

    output["contracts"] = Json::Value(Json::objectValue);
    for (string const& contractName: compiler.getContractNames())
    {
        Json::Value contractData(Json::objectValue);
        contractData["solidity_interface"] = compiler.getSolidityInterface(contractName);
        contractData["interface"] = compiler.getInterface(contractName);
        contractData["bytecode"] = toHex(compiler.getBytecode(contractName));
        contractData["opcodes"] = eth::disassemble(compiler.getBytecode(contractName));
        contractData["functionHashes"] = functionHashes(compiler.getContractDefinition(contractName));
        ostringstream unused;
        contractData["assembly"] = compiler.streamAssembly(unused, contractName, sources, true);
        output["contracts"][contractName] = contractData;
    }

    output["sources"] = Json::Value(Json::objectValue);
    output["sources"][""] = Json::Value(Json::objectValue);
    output["sources"][""]["AST"] = ASTJsonConverter(compiler.getAST("")).json();

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

static string outputBuffer;

extern "C"
{
extern char const* compileJSON(char const* _input, bool _optimize)
{
    outputBuffer = compile(_input, _optimize);
    return outputBuffer.c_str();
}
}