HackStudio: Abstract away language-server details

This commit moves all the logic that deals with the language server
(from HackStudio) into a LanguageClient class, provides some functions
to make constructing them easier, and makes all language servers use a
singular IPC definition.
Also fixes the FIXME about making the autocompletion async.
This makes adding language servers in the future significantly less
duplicate-y, and significantly easier :^)

1 files changed, 72 insertions, 0 deletions

diff --git a/DevTools/HackStudio/LanguageClient.cpp b/DevTools/HackStudio/LanguageClient.cpp
new file mode 100644
index 0000000000..36539802d3
--- /dev/null
+++ b/DevTools/HackStudio/LanguageClient.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "LanguageClient.h"
+#include <AK/String.h>
+#include <AK/Vector.h>
+
+namespace HackStudio {
+
+void ServerConnection::handle(const Messages::LanguageClient::AutoCompleteSuggestions& message)
+{
+    if (m_language_client)
+        m_language_client->provide_autocomplete_suggestions(message.suggestions());
+}
+
+void LanguageClient::open_file(const String& path)
+{
+    m_connection.post_message(Messages::LanguageServer::FileOpened(path));
+}
+
+void LanguageClient::set_file_content(const String& path, const String& content)
+{
+    m_connection.post_message(Messages::LanguageServer::SetFileContent(path, content));
+}
+
+void LanguageClient::insert_text(const String& path, const String& text, size_t line, size_t column)
+{
+    m_connection.post_message(Messages::LanguageServer::FileEditInsertText(path, text, line, column));
+}
+
+void LanguageClient::remove_text(const String& path, size_t from_line, size_t from_column, size_t to_line, size_t to_column)
+{
+    m_connection.post_message(Messages::LanguageServer::FileEditRemoveText(path, from_line, from_column, to_line, to_column));
+}
+
+void LanguageClient::request_autocomplete(const String& path, size_t cursor_line, size_t cursor_column)
+{
+    m_connection.post_message(Messages::LanguageServer::AutoCompleteSuggestions(path, cursor_line, cursor_column));
+}
+
+void LanguageClient::provide_autocomplete_suggestions(const Vector<String>& suggestions)
+{
+    if (on_autocomplete_suggestions)
+        on_autocomplete_suggestions(suggestions);
+
+    // Otherwise, drop it on the floor :shrug:
+}
+
+}