mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
142 lines
3.4 KiB
C++
142 lines
3.4 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#include <libsolidity/lsp/Transport.h>
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#include <libsolutil/JSON.h>
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#include <libsolutil/Visitor.h>
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#include <libsolutil/CommonIO.h>
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#include <liblangutil/Exceptions.h>
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#include <boost/algorithm/string.hpp>
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#include <iostream>
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#include <sstream>
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using namespace std;
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using namespace solidity::lsp;
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IOStreamTransport::IOStreamTransport(istream& _in, ostream& _out):
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m_input{_in},
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m_output{_out}
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{
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}
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IOStreamTransport::IOStreamTransport():
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IOStreamTransport(cin, cout)
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{
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}
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bool IOStreamTransport::closed() const noexcept
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{
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return m_input.eof();
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}
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optional<Json::Value> IOStreamTransport::receive()
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{
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auto const headers = parseHeaders();
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if (!headers)
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{
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error({}, ErrorCode::ParseError, "Could not parse RPC headers.");
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return nullopt;
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}
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if (!headers->count("content-length"))
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{
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error({}, ErrorCode::ParseError, "No content-length header found.");
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return nullopt;
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}
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string const data = util::readBytes(m_input, stoul(headers->at("content-length")));
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Json::Value jsonMessage;
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string jsonParsingErrors;
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solidity::util::jsonParseStrict(data, jsonMessage, &jsonParsingErrors);
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if (!jsonParsingErrors.empty() || !jsonMessage || !jsonMessage.isObject())
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{
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error({}, ErrorCode::ParseError, "Could not parse RPC JSON payload. " + jsonParsingErrors);
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return nullopt;
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}
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return {move(jsonMessage)};
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}
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void IOStreamTransport::notify(string _method, Json::Value _message)
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{
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Json::Value json;
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json["method"] = move(_method);
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json["params"] = move(_message);
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send(move(json));
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}
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void IOStreamTransport::reply(MessageID _id, Json::Value _message)
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{
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Json::Value json;
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json["result"] = move(_message);
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send(move(json), _id);
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}
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void IOStreamTransport::error(MessageID _id, ErrorCode _code, string _message)
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{
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Json::Value json;
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json["error"]["code"] = static_cast<int>(_code);
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json["error"]["message"] = move(_message);
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send(move(json), _id);
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}
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void IOStreamTransport::send(Json::Value _json, MessageID _id)
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{
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solAssert(_json.isObject());
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_json["jsonrpc"] = "2.0";
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if (_id != Json::nullValue)
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_json["id"] = _id;
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string const jsonString = solidity::util::jsonCompactPrint(_json);
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m_output << "Content-Length: " << jsonString.size() << "\r\n";
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m_output << "\r\n";
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m_output << jsonString;
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m_output.flush();
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}
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optional<map<string, string>> IOStreamTransport::parseHeaders()
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{
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map<string, string> headers;
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while (true)
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{
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string line;
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getline(m_input, line);
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if (boost::trim_copy(line).empty())
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break;
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auto const delimiterPos = line.find(':');
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if (delimiterPos == string::npos)
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return nullopt;
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string name = boost::to_lower_copy(line.substr(0, delimiterPos));
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string value = line.substr(delimiterPos + 1);
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if (!headers.emplace(
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boost::trim_copy(name),
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boost::trim_copy(value)
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).second)
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return nullopt;
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}
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return {move(headers)};
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}
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