solidity/libsolidity/lsp/LanguageServer.h
2021-12-16 17:52:49 +01:00

111 lines
3.8 KiB
C++

/*
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/>.
*/
// SPDX-License-Identifier: GPL-3.0
#pragma once
#include <libsolidity/lsp/Transport.h>
#include <libsolidity/lsp/FileRepository.h>
#include <libsolidity/interface/CompilerStack.h>
#include <libsolidity/interface/FileReader.h>
#include <json/value.h>
#include <functional>
#include <map>
#include <optional>
#include <string>
#include <vector>
namespace solidity::lsp
{
enum class ErrorCode;
/**
* Solidity Language Server, managing one LSP client.
* This implements a subset of LSP version 3.16 that can be found at:
* https://microsoft.github.io/language-server-protocol/specifications/specification-3-16/
*/
class LanguageServer
{
public:
/// @param _transport Customizable transport layer.
explicit LanguageServer(Transport& _transport);
/// Re-compiles the project and updates the diagnostics pushed to the client.
void compileAndUpdateDiagnostics();
/// Loops over incoming messages via the transport layer until shutdown condition is met.
///
/// The standard shutdown condition is when the maximum number of consecutive failures
/// has been exceeded.
///
/// @return boolean indicating normal or abnormal termination.
bool run();
private:
/// Checks if the server is initialized (to be used by messages that need it to be initialized).
/// Reports an error and returns false if not.
bool checkServerInitialized(MessageID _id);
void handleInitialize(MessageID _id, Json::Value const& _args);
void handleWorkspaceDidChangeConfiguration(MessageID _id, Json::Value const& _args);
void handleTextDocumentDidOpen(MessageID _id, Json::Value const& _args);
void handleTextDocumentDidChange(MessageID _id, Json::Value const& _args);
void handleTextDocumentDidClose(MessageID _id, Json::Value const& _args);
/// Invoked when the server user-supplied configuration changes (initiated by the client).
void changeConfiguration(Json::Value const&);
/// Compile everything until after analysis phase.
void compile();
std::optional<langutil::SourceLocation> parsePosition(
std::string const& _sourceUnitName,
Json::Value const& _position
) const;
/// @returns the source location given a source unit name and an LSP Range object,
/// or nullopt on failure.
std::optional<langutil::SourceLocation> parseRange(
std::string const& _sourceUnitName,
Json::Value const& _range
) const;
Json::Value toRange(langutil::SourceLocation const& _location) const;
Json::Value toJson(langutil::SourceLocation const& _location) const;
// LSP related member fields
using MessageHandler = std::function<void(MessageID, Json::Value const&)>;
enum class State { Started, Initialized, ShutdownRequested, ExitRequested, ExitWithoutShutdown };
State m_state = State::Started;
Transport& m_client;
std::map<std::string, MessageHandler> m_handlers;
/// Set of files known to be open by the client.
std::set<std::string> m_openFiles;
/// Set of source unit names for which we sent diagnostics to the client in the last iteration.
std::set<std::string> m_nonemptyDiagnostics;
FileRepository m_fileRepository;
frontend::CompilerStack m_compilerStack;
/// User-supplied custom configuration settings (such as EVM version).
Json::Value m_settingsObject;
};
}