/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. 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 <libsolc/libsolc.h>
#include <libdevcore/Common.h>
#include <libdevcore/JSON.h>
#include <libsolidity/interface/StandardCompiler.h>
#include <libsolidity/interface/Version.h>
#include <string>
#include "license.h"
using namespace std;
using namespace dev;
using namespace solidity;
namespace
{
ReadCallback::Callback wrapReadCallback(CStyleReadFileCallback _readCallback = nullptr)
{
ReadCallback::Callback readCallback;
if (_readCallback)
{
readCallback = [=](string const& _path)
{
char* contents_c = nullptr;
char* error_c = nullptr;
_readCallback(_path.c_str(), &contents_c, &error_c);
ReadCallback::Result result;
result.success = true;
if (!contents_c && !error_c)
{
result.success = false;
result.responseOrErrorMessage = "File not found.";
}
if (contents_c)
{
result.success = true;
result.responseOrErrorMessage = string(contents_c);
free(contents_c);
}
if (error_c)
{
result.success = false;
result.responseOrErrorMessage = string(error_c);
free(error_c);
}
return result;
};
}
return readCallback;
}
/// Translates a gas value as a string to a JSON number or null
Json::Value gasToJson(Json::Value const& _value)
{
if (_value.isObject())
{
Json::Value ret = Json::objectValue;
for (auto const& sig: _value.getMemberNames())
ret[sig] = gasToJson(_value[sig]);
return ret;
}
if (_value == "infinite")
return Json::Value(Json::nullValue);
u256 value(_value.asString());
if (value > std::numeric_limits<Json::LargestUInt>::max())
return Json::Value(Json::nullValue);
else
return Json::Value(Json::LargestUInt(value));
}
Json::Value translateGasEstimates(Json::Value const& estimates)
{
Json::Value output(Json::objectValue);
if (estimates["creation"].isObject())
{
Json::Value creation(Json::arrayValue);
creation[0] = gasToJson(estimates["creation"]["executionCost"]);
creation[1] = gasToJson(estimates["creation"]["codeDepositCost"]);
output["creation"] = creation;
}
else
output["creation"] = Json::objectValue;
output["external"] = gasToJson(estimates.get("external", Json::objectValue));
output["internal"] = gasToJson(estimates.get("internal", Json::objectValue));
return output;
}
string compile(StringMap const& _sources, bool _optimize, CStyleReadFileCallback _readCallback)
{
/// create new JSON input format
Json::Value input = Json::objectValue;
input["language"] = "Solidity";
input["sources"] = Json::objectValue;
for (auto const& source: _sources)
{
input["sources"][source.first] = Json::objectValue;
input["sources"][source.first]["content"] = source.second;
}
input["settings"] = Json::objectValue;
input["settings"]["optimizer"] = Json::objectValue;
input["settings"]["optimizer"]["enabled"] = _optimize;
input["settings"]["optimizer"]["runs"] = 200;
// Enable all SourceUnit-level outputs.
input["settings"]["outputSelection"]["*"][""][0] = "*";
// Enable all Contract-level outputs.
input["settings"]["outputSelection"]["*"]["*"][0] = "*";
StandardCompiler compiler(wrapReadCallback(_readCallback));
Json::Value ret = compiler.compile(input);
/// transform JSON to match the old format
// {
// "errors": [ "Error 1", "Error 2" ],
// "sourceList": [ "sourcename1", "sourcename2" ],
// "sources": {
// "sourcename1": {
// "AST": {}
// }
// },
// "contracts": {
// "Contract1": {
// "interface": "[...abi...]",
// "bytecode": "ff0011...",
// "runtimeBytecode": "ff0011",
// "opcodes": "PUSH 1 POP STOP",
// "metadata": "{...metadata...}",
// "functionHashes": {
// "test(uint256)": "11ff2233"
// },
// "gasEstimates": {
// "creation": [ 224, 42000 ],
// "external": {
// "11ff2233": null,
// "3322ff11": 1234
// },
// "internal": {
// }
// },
// "srcmap" = "0:1:2",
// "srcmapRuntime" = "0:1:2",
// "assembly" = {}
// }
// }
// }
Json::Value output = Json::objectValue;
if (ret.isMember("errors"))
{
output["errors"] = Json::arrayValue;
for (auto const& error: ret["errors"])
output["errors"].append(
!error["formattedMessage"].empty() ? error["formattedMessage"] : error["message"]
);
}
output["sourceList"] = Json::arrayValue;
for (auto const& source: _sources)
output["sourceList"].append(source.first);
if (ret.isMember("sources"))
{
output["sources"] = Json::objectValue;
for (auto const& sourceName: ret["sources"].getMemberNames())
{
output["sources"][sourceName] = Json::objectValue;
output["sources"][sourceName]["AST"] = ret["sources"][sourceName]["legacyAST"];
}
}
if (ret.isMember("contracts"))
{
output["contracts"] = Json::objectValue;
for (auto const& sourceName: ret["contracts"].getMemberNames())
for (auto const& contractName: ret["contracts"][sourceName].getMemberNames())
{
Json::Value contractInput = ret["contracts"][sourceName][contractName];
Json::Value contractOutput = Json::objectValue;
contractOutput["interface"] = jsonCompactPrint(contractInput["abi"]);
contractOutput["metadata"] = contractInput["metadata"];
contractOutput["functionHashes"] = contractInput["evm"]["methodIdentifiers"];
contractOutput["gasEstimates"] = translateGasEstimates(contractInput["evm"]["gasEstimates"]);
contractOutput["assembly"] = contractInput["evm"]["legacyAssembly"];
contractOutput["bytecode"] = contractInput["evm"]["bytecode"]["object"];
contractOutput["opcodes"] = contractInput["evm"]["bytecode"]["opcodes"];
contractOutput["srcmap"] = contractInput["evm"]["bytecode"]["sourceMap"];
contractOutput["runtimeBytecode"] = contractInput["evm"]["deployedBytecode"]["object"];
contractOutput["srcmapRuntime"] = contractInput["evm"]["deployedBytecode"]["sourceMap"];
output["contracts"][sourceName + ":" + contractName] = contractOutput;
}
}
try
{
return jsonCompactPrint(output);
}
catch (...)
{
return "{\"errors\":[\"Unknown error while generating JSON.\"]}";
}
}
string compileMulti(string const& _input, bool _optimize, CStyleReadFileCallback _readCallback = nullptr)
{
string errors;
Json::Value input;
if (!jsonParseStrict(_input, input, &errors))
{
Json::Value jsonErrors(Json::arrayValue);
jsonErrors.append("Error parsing input JSON: " + errors);
Json::Value output(Json::objectValue);
output["errors"] = jsonErrors;
return jsonCompactPrint(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);
}
string compileStandardInternal(string const& _input, CStyleReadFileCallback _readCallback = nullptr)
{
StandardCompiler compiler(wrapReadCallback(_readCallback));
return compiler.compile(_input);
}
}
static string s_outputBuffer;
extern "C"
{
extern char const* license() noexcept
{
static string fullLicenseText = otherLicenses + licenseText;
return fullLicenseText.c_str();
}
extern char const* version() noexcept
{
return VersionString.c_str();
}
extern char const* compileJSON(char const* _input, bool _optimize) noexcept
{
s_outputBuffer = compileSingle(_input, _optimize);
return s_outputBuffer.c_str();
}
extern char const* compileJSONMulti(char const* _input, bool _optimize) noexcept
{
s_outputBuffer = compileMulti(_input, _optimize);
return s_outputBuffer.c_str();
}
extern char const* compileJSONCallback(char const* _input, bool _optimize, CStyleReadFileCallback _readCallback) noexcept
{
s_outputBuffer = compileMulti(_input, _optimize, _readCallback);
return s_outputBuffer.c_str();
}
extern char const* compileStandard(char const* _input, CStyleReadFileCallback _readCallback) noexcept
{
s_outputBuffer = compileStandardInternal(_input, _readCallback);
return s_outputBuffer.c_str();
}
extern char const* solidity_license() noexcept
{
/// todo: make this the default or an alias
return license();
}
extern char const* solidity_version() noexcept
{
/// todo: make this the default or an alias
return version();
}
extern char const* solidity_compile(char const* _input, CStyleReadFileCallback _readCallback) noexcept
{
/// todo: make this the default or an alias
return compileStandard(_input, _readCallback);
}
}
