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HackStudio: Add C++ Language Server
The language server keeps track of the content of currently edited files by receiving updates about edit actions. Also, C++ autocompletion is no longer tied to HackStudio itself and moved to be part of the language server.
This commit is contained in:
Itamar
Andreas Kling
parent
bf53d7ff64
commit
863f14788f
18 changed files with 451 additions and 21 deletions
188
DevTools/HackStudio/LanguageServers/Cpp/ClientConnection.cpp
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188
DevTools/HackStudio/LanguageServers/Cpp/ClientConnection.cpp
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/*
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* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "ClientConnection.h"
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#include "AutoComplete.h"
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#include <AK/HashMap.h>
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#include <LibCore/File.h>
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#include <LibGUI/TextDocument.h>
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// #define DEBUG_CPP_LANGUAGE_SERVER
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// #define DEBUG_FILE_CONTENT
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namespace LanguageServers::Cpp {
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static HashMap<int, RefPtr<ClientConnection>> s_connections;
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ClientConnection::ClientConnection(NonnullRefPtr<Core::LocalSocket> socket, int client_id)
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: IPC::ClientConnection<CppLanguageClientEndpoint, CppLanguageServerEndpoint>(*this, move(socket), client_id)
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{
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s_connections.set(client_id, *this);
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}
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ClientConnection::~ClientConnection()
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{
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}
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void ClientConnection::die()
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{
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s_connections.remove(client_id());
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exit(0);
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}
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OwnPtr<Messages::CppLanguageServer::GreetResponse> ClientConnection::handle(const Messages::CppLanguageServer::Greet& message)
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{
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m_project_root = LexicalPath(message.project_root());
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#ifdef DEBUG_CPP_LANGUAGE_SERVER
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dbg() << "project_root: " << m_project_root.string();
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#endif
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return make<Messages::CppLanguageServer::GreetResponse>(client_id());
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}
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class DefaultDocumentClient final : public GUI::TextDocument::Client {
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public:
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virtual ~DefaultDocumentClient() override = default;
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virtual void document_did_append_line() override {};
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virtual void document_did_insert_line(size_t) override {};
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virtual void document_did_remove_line(size_t) override {};
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virtual void document_did_remove_all_lines() override {};
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virtual void document_did_change() override {};
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virtual void document_did_set_text() override {};
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virtual void document_did_set_cursor(const GUI::TextPosition&) override {};
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virtual bool is_automatic_indentation_enabled() const override { return true; }
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virtual int soft_tab_width() const { return 4; }
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};
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static DefaultDocumentClient s_default_document_client;
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void ClientConnection::handle(const Messages::CppLanguageServer::FileOpened& message)
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{
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LexicalPath file_path(String::format("%s/%s", m_project_root.string().characters(), message.file_name().characters()));
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#ifdef DEBUG_CPP_LANGUAGE_SERVER
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dbg() << "FileOpened: " << file_path.string();
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#endif
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auto file = Core::File::construct(file_path.string());
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if (!file->open(Core::IODevice::ReadOnly)) {
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errno = file->error();
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perror("open");
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dbg() << "Failed to open project file: " << file_path.string();
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return;
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}
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auto content = file->read_all();
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StringView content_view(content);
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auto document = GUI::TextDocument::create(&s_default_document_client);
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document->set_text(content_view);
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m_open_files.set(message.file_name(), document);
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#ifdef DEBUG_FILE_CONTENT
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dbg() << document->text();
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#endif
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}
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void ClientConnection::handle(const Messages::CppLanguageServer::FileEditInsertText& message)
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{
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#ifdef DEBUG_CPP_LANGUAGE_SERVER
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dbg() << "InsertText for file: " << message.file_name();
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dbg() << "Text: " << message.text();
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dbg() << "[" << message.start_line() << ":" << message.start_column() << "]";
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#endif
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auto document = document_for(message.file_name());
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if (!document) {
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dbg() << "file " << message.file_name() << " has not been opened";
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return;
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}
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GUI::TextPosition start_position { (size_t)message.start_line(), (size_t)message.start_column() };
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document->insert_at(start_position, message.text(), &s_default_document_client);
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#ifdef DEBUG_FILE_CONTENT
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dbg() << document->text();
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#endif
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}
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void ClientConnection::handle(const Messages::CppLanguageServer::FileEditRemoveText& message)
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{
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#ifdef DEBUG_CPP_LANGUAGE_SERVER
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dbg() << "RemoveText for file: " << message.file_name();
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dbg() << "[" << message.start_line() << ":" << message.start_column() << " - " << message.end_line() << ":" << message.end_column() << "]";
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#endif
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auto document = document_for(message.file_name());
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if (!document) {
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dbg() << "file " << message.file_name() << " has not been opened";
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return;
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}
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GUI::TextPosition start_position { (size_t)message.start_line(), (size_t)message.start_column() };
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GUI::TextRange range {
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GUI::TextPosition { (size_t)message.start_line(),
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(size_t)message.start_column() },
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GUI::TextPosition { (size_t)message.end_line(),
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(size_t)message.end_column() }
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};
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document->remove(range);
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#ifdef DEBUG_FILE_CONTENT
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dbg() << document->text();
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#endif
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}
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// FIXME: The work we do here could be taxing and block the client for a significant time.
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// Would should turn this to an async IPC endpoint and report the reuslts back in a separate Server->Client message.
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OwnPtr<Messages::CppLanguageServer::AutoCompleteSuggestionsResponse> ClientConnection::handle(const Messages::CppLanguageServer::AutoCompleteSuggestions& message)
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{
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#ifdef DEBUG_CPP_LANGUAGE_SERVER
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dbg() << "AutoCompleteSuggestions for: " << message.file_name() << " " << message.cursor_line() << ":" << message.cursor_column();
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#endif
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auto document = document_for(message.file_name());
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if (!document) {
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dbg() << "file " << message.file_name() << " has not been opened";
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return nullptr;
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}
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Vector<String> suggestions = AutoComplete::get_suggestions(document->text(), { (size_t)message.cursor_line(), (size_t)message.cursor_column() });
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return make<Messages::CppLanguageServer::AutoCompleteSuggestionsResponse>(suggestions);
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}
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RefPtr<GUI::TextDocument> ClientConnection::document_for(const String& file_name)
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{
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auto document_optional = m_open_files.get(file_name);
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if (!document_optional.has_value())
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return nullptr;
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return document_optional.value();
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}
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void ClientConnection::handle(const Messages::CppLanguageServer::SetFileContent& message)
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{
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auto document = document_for(message.file_name());
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if (!document) {
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dbg() << "file " << message.file_name() << " has not been opened";
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return;
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}
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auto content = message.content();
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document->set_text(content.view());
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}
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}
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