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Diffstat (limited to 'libsolc/libsolc.cpp')
| -rw-r--r-- | libsolc/libsolc.cpp | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/libsolc/libsolc.cpp b/libsolc/libsolc.cpp new file mode 100644 index 00000000..3a6e1521 --- /dev/null +++ b/libsolc/libsolc.cpp @@ -0,0 +1,302 @@ +/* + 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"] = dev::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 dev::jsonCompactPrint(output); + } + catch (...) + { + return "{\"errors\":[\"Unknown error while generating JSON.\"]}"; + } +} + +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 dev::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() +{ + static string fullLicenseText = otherLicenses + licenseText; + return fullLicenseText.c_str(); +} +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(); +} +extern char const* compileStandard(char const* _input, CStyleReadFileCallback _readCallback) +{ + s_outputBuffer = compileStandardInternal(_input, _readCallback); + return s_outputBuffer.c_str(); +} +} |