1 files changed, 418 insertions, 0 deletions
diff --git a/libsolidity/interface/StandardCompiler.cpp b/libsolidity/interface/StandardCompiler.cpp
new file mode 100644
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+++ b/libsolidity/interface/StandardCompiler.cpp
@@ -0,0 +1,418 @@
+/*
+	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 Alex Beregszaszi
+ * @date 2016
+ * Standard JSON compiler interface.
+ */
+
+#include <libsolidity/interface/StandardCompiler.h>
+#include <libsolidity/interface/SourceReferenceFormatter.h>
+#include <libsolidity/ast/ASTJsonConverter.h>
+#include <libevmasm/Instruction.h>
+#include <libdevcore/JSON.h>
+
+using namespace std;
+using namespace dev;
+using namespace dev::solidity;
+
+namespace {
+
+Json::Value formatError(
+	bool _warning,
+	string const& _type,
+	string const& _component,
+	string const& _message,
+	string const& _formattedMessage = "",
+	Json::Value const& _sourceLocation = Json::Value()
+)
+{
+	Json::Value error = Json::objectValue;
+	error["type"] = _type;
+	error["component"] = _component;
+	error["severity"] = _warning ? "warning" : "error";
+	error["message"] = _message;
+	error["formattedMessage"] = (_formattedMessage.length() > 0) ? _formattedMessage : _message;
+	if (_sourceLocation.isObject())
+		error["sourceLocation"] = _sourceLocation;
+	return error;
+}
+
+Json::Value formatFatalError(string const& _type, string const& _message)
+{
+	Json::Value output = Json::objectValue;
+	output["errors"] = Json::arrayValue;
+	output["errors"].append(formatError(false, _type, "general", _message));
+	return output;
+}
+
+Json::Value formatErrorWithException(
+	Exception const& _exception,
+	bool const& _warning,
+	string const& _type,
+	string const& _component,
+	string const& _message,
+	function<Scanner const&(string const&)> const& _scannerFromSourceName
+)
+{
+	string message;
+	string formattedMessage = SourceReferenceFormatter::formatExceptionInformation(_exception, _message, _scannerFromSourceName);
+
+	// NOTE: the below is partially a copy from SourceReferenceFormatter
+	SourceLocation const* location = boost::get_error_info<errinfo_sourceLocation>(_exception);
+
+	if (string const* description = boost::get_error_info<errinfo_comment>(_exception))
+		message = ((_message.length() > 0) ? (_message + ":") : "") + *description;
+	else
+		message = _message;
+
+	if (location && location->sourceName)
+	{
+		Json::Value sourceLocation = Json::objectValue;
+		sourceLocation["file"] = *location->sourceName;
+		sourceLocation["start"] = location->start;
+		sourceLocation["end"] = location->end;
+	}
+
+	return formatError(_warning, _type, _component, message, formattedMessage, location);
+}
+
+StringMap createSourceList(Json::Value const& _input)
+{
+	StringMap sources;
+	Json::Value const& jsonSources = _input["sources"];
+	if (jsonSources.isObject())
+		for (auto const& sourceName: jsonSources.getMemberNames())
+			sources[sourceName] = jsonSources[sourceName]["content"].asString();
+	return sources;
+}
+
+Json::Value methodIdentifiers(ContractDefinition const& _contract)
+{
+	Json::Value methodIdentifiers(Json::objectValue);
+	for (auto const& it: _contract.interfaceFunctions())
+		methodIdentifiers[it.second->externalSignature()] = toHex(it.first.ref());
+	return methodIdentifiers;
+}
+
+Json::Value formatLinkReferences(std::map<size_t, std::string> const& linkReferences)
+{
+	Json::Value ret(Json::objectValue);
+
+	for (auto const& ref: linkReferences)
+	{
+		string const& fullname = ref.second;
+		size_t colon = fullname.find(':');
+		solAssert(colon != string::npos, "");
+		string file = fullname.substr(0, colon);
+		string name = fullname.substr(colon + 1);
+
+		Json::Value fileObject = ret.get(file, Json::objectValue);
+		Json::Value libraryArray = fileObject.get(name, Json::arrayValue);
+
+		Json::Value entry = Json::objectValue;
+		entry["start"] = Json::UInt(ref.first);
+		entry["length"] = 20;
+
+		libraryArray.append(entry);
+		fileObject[name] = libraryArray;
+		ret[file] = fileObject;
+	}
+
+	return ret;
+}
+
+Json::Value collectEVMObject(eth::LinkerObject const& _object, string const* _sourceMap)
+{
+	Json::Value output = Json::objectValue;
+	output["object"] = _object.toHex();
+	output["opcodes"] = solidity::disassemble(_object.bytecode);
+	output["sourceMap"] = _sourceMap ? *_sourceMap : "";
+	output["linkReferences"] = formatLinkReferences(_object.linkReferences);
+	return output;
+}
+
+}
+
+Json::Value StandardCompiler::compileInternal(Json::Value const& _input)
+{
+	m_compilerStack.reset(false);
+
+	if (!_input.isObject())
+		return formatFatalError("JSONError", "Input is not a JSON object.");
+
+	if (_input["language"] != "Solidity")
+		return formatFatalError("JSONError", "Only \"Solidity\" is supported as a language.");
+
+	Json::Value const& sources = _input["sources"];
+	if (!sources)
+		return formatFatalError("JSONError", "No input sources specified.");
+
+	for (auto const& sourceName: sources.getMemberNames())
+		if (sources[sourceName]["content"].isString())
+			m_compilerStack.addSource(sourceName, sources[sourceName]["content"].asString());
+		else if (sources[sourceName]["urls"].isArray())
+			return formatFatalError("UnimplementedFeatureError", "Input URLs not supported yet.");
+		else
+			return formatFatalError("JSONError", "Invalid input source specified.");
+
+	Json::Value const& settings = _input.get("settings", Json::Value());
+
+	vector<string> remappings;
+	for (auto const& remapping: settings.get("remappings", Json::Value()))
+		remappings.push_back(remapping.asString());
+	m_compilerStack.setRemappings(remappings);
+
+	Json::Value optimizerSettings = settings.get("optimizer", Json::Value());
+	bool optimize = optimizerSettings.get("enabled", Json::Value(false)).asBool();
+	unsigned optimizeRuns = optimizerSettings.get("runs", Json::Value(200u)).asUInt();
+
+	map<string, h160> libraries;
+	Json::Value jsonLibraries = settings.get("libraries", Json::Value());
+	for (auto const& sourceName: jsonLibraries.getMemberNames())
+	{
+		auto const& jsonSourceName = jsonLibraries[sourceName];
+		for (auto const& library: jsonSourceName.getMemberNames())
+			// @TODO use libraries only for the given source
+			libraries[library] = h160(jsonSourceName[library].asString());
+	}
+
+	Json::Value metadataSettings = settings.get("metadata", Json::Value());
+	m_compilerStack.useMetadataLiteralSources(metadataSettings.get("useLiteralContent", Json::Value(false)).asBool());
+
+	auto scannerFromSourceName = [&](string const& _sourceName) -> solidity::Scanner const& { return m_compilerStack.scanner(_sourceName); };
+
+	Json::Value errors = Json::arrayValue;
+	bool success = false;
+
+	try
+	{
+		success = m_compilerStack.compile(optimize, optimizeRuns, libraries);
+
+		for (auto const& error: m_compilerStack.errors())
+		{
+			auto err = dynamic_pointer_cast<Error const>(error);
+
+			errors.append(formatErrorWithException(
+				*error,
+				err->type() == Error::Type::Warning,
+				err->typeName(),
+				"general",
+				"",
+				scannerFromSourceName
+			));
+		}
+	}
+	catch (Error const& _error)
+	{
+		if (_error.type() == Error::Type::DocstringParsingError)
+			errors.append(formatError(
+				false,
+				"DocstringParsingError",
+				"general",
+				"Documentation parsing error: " + *boost::get_error_info<errinfo_comment>(_error)
+			));
+		else
+			errors.append(formatErrorWithException(
+				_error,
+				false,
+				_error.typeName(),
+				"general",
+				"",
+				scannerFromSourceName
+			));
+	}
+	catch (CompilerError const& _exception)
+	{
+		errors.append(formatErrorWithException(
+			_exception,
+			false,
+			"CompilerError",
+			"general",
+			"Compiler error (" + _exception.lineInfo() + ")",
+			scannerFromSourceName
+		));
+	}
+	catch (InternalCompilerError const& _exception)
+	{
+		errors.append(formatErrorWithException(
+			_exception,
+			false,
+			"InternalCompilerError",
+			"general",
+			"Internal compiler error (" + _exception.lineInfo() + ")", scannerFromSourceName
+		));
+	}
+	catch (UnimplementedFeatureError const& _exception)
+	{
+		errors.append(formatErrorWithException(
+			_exception,
+			false,
+			"UnimplementedFeatureError",
+			"general",
+			"Unimplemented feature (" + _exception.lineInfo() + ")",
+			scannerFromSourceName));
+	}
+	catch (Exception const& _exception)
+	{
+		errors.append(formatError(
+			false,
+			"Exception",
+			"general",
+			"Exception during compilation: " + boost::diagnostic_information(_exception)
+		));
+	}
+	catch (...)
+	{
+		errors.append(formatError(
+			false,
+			"Exception",
+			"general",
+			"Unknown exception during compilation."
+		));
+	}
+
+	Json::Value output = Json::objectValue;
+
+	if (errors.size() > 0)
+		output["errors"] = errors;
+
+	/// Inconsistent state - stop here to receive error reports from users
+	if (!success && (errors.size() == 0))
+		return formatFatalError("InternalCompilerError", "No error reported, but compilation failed.");
+
+	output["sources"] = Json::objectValue;
+	unsigned sourceIndex = 0;
+	for (auto const& source: m_compilerStack.sourceNames())
+	{
+		Json::Value sourceResult = Json::objectValue;
+		sourceResult["id"] = sourceIndex++;
+		sourceResult["legacyAST"] = ASTJsonConverter(m_compilerStack.ast(source), m_compilerStack.sourceIndices()).json();
+		output["sources"][source] = sourceResult;
+	}
+
+	Json::Value contractsOutput = Json::objectValue;
+	for (string const& contractName: m_compilerStack.contractNames())
+	{
+		size_t colon = contractName.find(':');
+		solAssert(colon != string::npos, "");
+		string file = contractName.substr(0, colon);
+		string name = contractName.substr(colon + 1);
+
+		// ABI, documentation and metadata
+		Json::Value contractData(Json::objectValue);
+		contractData["abi"] = dev::jsonCompactPrint(m_compilerStack.metadata(contractName, DocumentationType::ABIInterface));
+		contractData["metadata"] = m_compilerStack.onChainMetadata(contractName);
+		contractData["userdoc"] = dev::jsonCompactPrint(m_compilerStack.metadata(contractName, DocumentationType::NatspecUser));
+		contractData["devdoc"] = dev::jsonCompactPrint(m_compilerStack.metadata(contractName, DocumentationType::NatspecDev));
+
+		// EVM
+		Json::Value evmData(Json::objectValue);
+		// @TODO: add ir
+		ostringstream tmp;
+		m_compilerStack.streamAssembly(tmp, contractName, createSourceList(_input), false);
+		evmData["assembly"] = tmp.str();
+		evmData["legacyAssembly"] = m_compilerStack.streamAssembly(tmp, contractName, createSourceList(_input), true);
+		evmData["methodIdentifiers"] = methodIdentifiers(m_compilerStack.contractDefinition(contractName));
+		evmData["gasEstimates"] = m_compilerStack.gasEstimates(contractName);
+
+		evmData["bytecode"] = collectEVMObject(
+			m_compilerStack.object(contractName),
+			m_compilerStack.sourceMapping(contractName)
+		);
+
+		evmData["deployedBytecode"] = collectEVMObject(
+			m_compilerStack.runtimeObject(contractName),
+			m_compilerStack.runtimeSourceMapping(contractName)
+		);
+
+		contractData["evm"] = evmData;
+
+		if (!contractsOutput.isMember(file))
+			contractsOutput[file] = Json::objectValue;
+
+		contractsOutput[file][name] = contractData;
+	}
+	output["contracts"] = contractsOutput;
+
+	{
+		ErrorList formalErrors;
+		if (m_compilerStack.prepareFormalAnalysis(&formalErrors))
+			output["why3"] = m_compilerStack.formalTranslation();
+
+		for (auto const& error: formalErrors)
+		{
+			auto err = dynamic_pointer_cast<Error const>(error);
+
+			errors.append(formatErrorWithException(
+				*error,
+				err->type() == Error::Type::Warning,
+				err->typeName(),
+				"general",
+				"",
+				scannerFromSourceName
+			));
+		}
+
+		// FIXME!!
+		if (!formalErrors.empty())
+			output["errors"] = errors;
+	}
+
+	return output;
+}
+
+Json::Value StandardCompiler::compile(Json::Value const& _input)
+{
+	try
+	{
+		return compileInternal(_input);
+	}
+	catch (...)
+	{
+		return formatFatalError("InternalCompilerError", "Internal exception in StandardCompiler::compilerInternal");
+	}
+}
+
+string StandardCompiler::compile(string const& _input)
+{
+	Json::Value input;
+	Json::Reader reader;
+
+	try
+	{
+		if (!reader.parse(_input, input, false))
+			return jsonCompactPrint(formatFatalError("JSONError", reader.getFormattedErrorMessages()));
+	}
+	catch(...)
+	{
+		return "{\"errors\":\"[{\"type\":\"JSONError\",\"component\":\"general\",\"severity\":\"error\",\"message\":\"Error parsing input JSON.\"}]}";
+	}
+
+	// cout << "Input: " << input.toStyledString() << endl;
+	Json::Value output = compile(input);
+	// cout << "Output: " << output.toStyledString() << endl;
+
+	try
+	{
+		return jsonCompactPrint(output);
+	}
+	catch(...)
+	{
+		return "{\"errors\":\"[{\"type\":\"JSONError\",\"component\":\"general\",\"severity\":\"error\",\"message\":\"Error writing output JSON.\"}]}";
+	}
+}