From 4cc88e5175b642e5bf3afdbfc2a7c584734a9d33 Mon Sep 17 00:00:00 2001
From: HolonProduction <holonproduction@gmail.com>
Date: Wed, 25 Jun 2025 14:43:48 +0200
Subject: [PATCH] LSP: Rework management of client owned files

---
 modules/SCsub                                 |   1 +
 .../gdscript_extend_parser.cpp                |  14 +-
 .../language_server/gdscript_extend_parser.h  |   3 +-
 .../gdscript_language_protocol.cpp            | 192 +++++++++++++++-
 .../gdscript_language_protocol.h              |  48 +++-
 .../gdscript_text_document.cpp                |  58 ++---
 .../language_server/gdscript_text_document.h  |   2 -
 .../language_server/gdscript_workspace.cpp    | 207 ++++--------------
 .../language_server/gdscript_workspace.h      |  26 ++-
 modules/gdscript/language_server/godot_lsp.h  |  36 ++-
 modules/gdscript/tests/test_lsp.h             |  18 +-
 11 files changed, 346 insertions(+), 259 deletions(-)

diff --git a/modules/SCsub b/modules/SCsub
index 69dfadfa311..e987dde0e5c 100644
--- a/modules/SCsub
+++ b/modules/SCsub
@@ -52,6 +52,7 @@ for name, path in env.module_list.items():
 
 # Generate header to be included in `tests/test_main.cpp` to run module-specific tests.
 if env["tests"]:
+    env.Append(CPPDEFINES=["TESTS_ENABLED"])
     env.CommandNoCache("modules_tests.gen.h", test_headers, env.Run(modules_builders.modules_tests_builder))
 
 # libmodules.a with only register_module_types.
diff --git a/modules/gdscript/language_server/gdscript_extend_parser.cpp b/modules/gdscript/language_server/gdscript_extend_parser.cpp
index 8780eb0fcc7..ed664aa45ae 100644
--- a/modules/gdscript/language_server/gdscript_extend_parser.cpp
+++ b/modules/gdscript/language_server/gdscript_extend_parser.cpp
@@ -344,8 +344,9 @@ void ExtendGDScriptParser::parse_class_symbol(const GDScriptParser::ClassNode *p
 					if (res.is_valid() && !res->get_path().is_empty()) {
 						value_text = "preload(\"" + res->get_path() + "\")";
 						if (symbol.documentation.is_empty()) {
-							if (HashMap<String, ExtendGDScriptParser *>::Iterator S = GDScriptLanguageProtocol::get_singleton()->get_workspace()->scripts.find(res->get_path())) {
-								symbol.documentation = S->value->class_symbol.documentation;
+							ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(res->get_path());
+							if (parser) {
+								symbol.documentation = parser->class_symbol.documentation;
 							}
 						}
 					} else {
@@ -1038,18 +1039,17 @@ Dictionary ExtendGDScriptParser::generate_api() const {
 	return api;
 }
 
-Error ExtendGDScriptParser::parse(const String &p_code, const String &p_path) {
+void ExtendGDScriptParser::parse(const String &p_code, const String &p_path) {
 	path = p_path;
 	lines = p_code.split("\n");
 
-	Error err = GDScriptParser::parse(p_code, p_path, false);
+	parse_result = GDScriptParser::parse(p_code, p_path, false);
 	GDScriptAnalyzer analyzer(this);
 
-	if (err == OK) {
-		err = analyzer.analyze();
+	if (parse_result == OK) {
+		parse_result = analyzer.analyze();
 	}
 	update_diagnostics();
 	update_symbols();
 	update_document_links(p_code);
-	return err;
 }
diff --git a/modules/gdscript/language_server/gdscript_extend_parser.h b/modules/gdscript/language_server/gdscript_extend_parser.h
index e7f6e41e1ce..cbc797649f6 100644
--- a/modules/gdscript/language_server/gdscript_extend_parser.h
+++ b/modules/gdscript/language_server/gdscript_extend_parser.h
@@ -143,6 +143,7 @@ public:
 	_FORCE_INLINE_ const Vector<LSP::Diagnostic> &get_diagnostics() const { return diagnostics; }
 	_FORCE_INLINE_ const ClassMembers &get_members() const { return members; }
 	_FORCE_INLINE_ const HashMap<String, ClassMembers> &get_inner_classes() const { return inner_classes; }
+	Error parse_result;
 
 	Error get_left_function_call(const LSP::Position &p_position, LSP::Position &r_func_pos, int &r_arg_index) const;
 
@@ -166,5 +167,5 @@ public:
 	const Array &get_member_completions();
 	Dictionary generate_api() const;
 
-	Error parse(const String &p_code, const String &p_path);
+	void parse(const String &p_code, const String &p_path);
 };
diff --git a/modules/gdscript/language_server/gdscript_language_protocol.cpp b/modules/gdscript/language_server/gdscript_language_protocol.cpp
index 0bf73a1ed62..fb3d35dd17e 100644
--- a/modules/gdscript/language_server/gdscript_language_protocol.cpp
+++ b/modules/gdscript/language_server/gdscript_language_protocol.cpp
@@ -36,6 +36,19 @@
 #include "editor/editor_log.h"
 #include "editor/editor_node.h"
 #include "editor/settings/editor_settings.h"
+#include "modules/gdscript/language_server/godot_lsp.h"
+
+#define LSP_CLIENT_V(m_ret_val)                                    \
+	ERR_FAIL_COND_V(latest_client_id == LSP_NO_CLIENT, m_ret_val); \
+	ERR_FAIL_COND_V(!clients.has(latest_client_id), m_ret_val);    \
+	Ref<LSPeer> client = clients.get(latest_client_id);            \
+	ERR_FAIL_COND_V(!client.is_valid(), m_ret_val);
+
+#define LSP_CLIENT                                      \
+	ERR_FAIL_COND(latest_client_id == LSP_NO_CLIENT);   \
+	ERR_FAIL_COND(!clients.has(latest_client_id));      \
+	Ref<LSPeer> client = clients.get(latest_client_id); \
+	ERR_FAIL_COND(!client.is_valid());
 
 GDScriptLanguageProtocol *GDScriptLanguageProtocol::singleton = nullptr;
 
@@ -312,8 +325,7 @@ void GDScriptLanguageProtocol::notify_client(const String &p_method, const Varia
 	}
 #endif
 	if (p_client_id == -1) {
-		ERR_FAIL_COND_MSG(latest_client_id == -1,
-				"GDScript LSP: Can't notify client as none was connected.");
+		ERR_FAIL_COND_MSG(latest_client_id == LSP_NO_CLIENT, "GDScript LSP: Can't notify client as none was connected.");
 		p_client_id = latest_client_id;
 	}
 	ERR_FAIL_COND(!clients.has(p_client_id));
@@ -333,8 +345,7 @@ void GDScriptLanguageProtocol::request_client(const String &p_method, const Vari
 	}
 #endif
 	if (p_client_id == -1) {
-		ERR_FAIL_COND_MSG(latest_client_id == -1,
-				"GDScript LSP: Can't notify client as none was connected.");
+		ERR_FAIL_COND_MSG(latest_client_id == LSP_NO_CLIENT, "GDScript LSP: Can't notify client as none was connected.");
 		p_client_id = latest_client_id;
 	}
 	ERR_FAIL_COND(!clients.has(p_client_id));
@@ -356,6 +367,174 @@ bool GDScriptLanguageProtocol::is_goto_native_symbols_enabled() const {
 	return bool(_EDITOR_GET("network/language_server/show_native_symbols_in_editor"));
 }
 
+ExtendGDScriptParser *GDScriptLanguageProtocol::LSPeer::parse_script(const String &p_path) {
+	remove_cached_parser(p_path);
+
+	String content;
+	const LSP::TextDocumentItem *document = managed_files.getptr(p_path);
+	if (document == nullptr) {
+		if (!p_path.has_extension("gd")) {
+			return nullptr;
+		}
+		Error err;
+		content = FileAccess::get_file_as_string(p_path, &err);
+		if (err != OK) {
+			return nullptr;
+		}
+	} else {
+		if (document->languageId != LSP::LanguageId::GDSCRIPT) {
+			return nullptr;
+		}
+		content = document->text;
+	}
+
+	ExtendGDScriptParser *parser = memnew(ExtendGDScriptParser);
+	parser->parse(content, p_path);
+
+	if (document != nullptr) {
+		parse_results[p_path] = parser;
+		GDScriptLanguageProtocol::get_singleton()->get_workspace()->publish_diagnostics(p_path);
+	} else {
+		stale_parsers[p_path] = parser;
+	}
+
+	return parser;
+}
+
+void GDScriptLanguageProtocol::LSPeer::remove_cached_parser(const String &p_path) {
+	HashMap<String, ExtendGDScriptParser *>::Iterator cached = parse_results.find(p_path);
+	if (cached) {
+		memdelete(cached->value);
+		parse_results.remove(cached);
+	}
+
+	HashMap<String, ExtendGDScriptParser *>::Iterator stale = stale_parsers.find(p_path);
+	if (stale) {
+		memdelete(stale->value);
+		stale_parsers.remove(stale);
+	}
+}
+
+ExtendGDScriptParser *GDScriptLanguageProtocol::get_parse_result(const String &p_path) {
+	LSP_CLIENT_V(nullptr);
+
+	ExtendGDScriptParser **cached_parser = client->parse_results.getptr(p_path);
+	if (cached_parser == nullptr) {
+		return client->parse_script(p_path);
+	}
+	return *cached_parser;
+}
+
+void GDScriptLanguageProtocol::lsp_did_open(const Dictionary &p_params) {
+	LSP_CLIENT;
+
+	LSP::TextDocumentItem document;
+	document.load(p_params["textDocument"]);
+
+	// We keep track of non GDScript files that the client owns, but we are not interested in the content.
+	if (document.languageId != LSP::LanguageId::GDSCRIPT) {
+		document.text = "";
+	}
+
+	String path = get_workspace()->get_file_path(document.uri);
+
+	/// An open notification must not be sent more than once without a corresponding close notification send before.
+	ERR_FAIL_COND_MSG(client->managed_files.has(path), "LSP: Client is opening already opened file.");
+
+	client->managed_files[path] = document;
+	client->parse_script(path);
+}
+
+void GDScriptLanguageProtocol::lsp_did_change(const Dictionary &p_params) {
+	LSP_CLIENT;
+
+	LSP::TextDocumentIdentifier identifier;
+	identifier.load(p_params["textDocument"]);
+
+	String path = get_workspace()->get_file_path(identifier.uri);
+	LSP::TextDocumentItem *document = client->managed_files.getptr(path);
+
+	/// Before a client can change a text document it must claim ownership of its content using the textDocument/didOpen notification.
+	ERR_FAIL_COND_MSG(document == nullptr, "LSP: Client is changing file without opening it.");
+
+	if (document->languageId != LSP::LanguageId::GDSCRIPT) {
+		return;
+	}
+
+	Array contentChanges = p_params["contentChanges"];
+
+	if (contentChanges.is_empty()) {
+		return;
+	}
+
+	// We only support TextDocumentSyncKind::Full. So only the last full text is relevant.
+	LSP::TextDocumentContentChangeEvent event;
+	event.load(contentChanges.back());
+	document->text = event.text;
+
+	client->parse_script(path);
+}
+
+void GDScriptLanguageProtocol::lsp_did_close(const Dictionary &p_params) {
+	LSP_CLIENT;
+
+	LSP::TextDocumentIdentifier identifier;
+	identifier.load(p_params["textDocument"]);
+
+	String path = get_workspace()->get_file_path(identifier.uri);
+	bool was_opened = client->managed_files.erase(path);
+
+	client->remove_cached_parser(path);
+
+	/// A close notification requires a previous open notification to be sent.
+	ERR_FAIL_COND_MSG(!was_opened, "LSP: Client is closing file without opening it.");
+}
+
+void GDScriptLanguageProtocol::resolve_related_symbols(const LSP::TextDocumentPositionParams &p_doc_pos, List<const LSP::DocumentSymbol *> &r_list) {
+	LSP_CLIENT;
+
+	String path = workspace->get_file_path(p_doc_pos.textDocument.uri);
+
+	const ExtendGDScriptParser *parser = get_parse_result(path);
+	if (!parser) {
+		return;
+	}
+
+	String symbol_identifier;
+	LSP::Range range;
+	symbol_identifier = parser->get_identifier_under_position(p_doc_pos.position, range);
+
+	for (const KeyValue<StringName, ClassMembers> &E : workspace->native_members) {
+		if (const LSP::DocumentSymbol *const *symbol = E.value.getptr(symbol_identifier)) {
+			r_list.push_back(*symbol);
+		}
+	}
+
+	for (const KeyValue<String, ExtendGDScriptParser *> &E : client->parse_results) {
+		const ExtendGDScriptParser *scr = E.value;
+		const ClassMembers &members = scr->get_members();
+		if (const LSP::DocumentSymbol *const *symbol = members.getptr(symbol_identifier)) {
+			r_list.push_back(*symbol);
+		}
+
+		for (const KeyValue<String, ClassMembers> &F : scr->get_inner_classes()) {
+			const ClassMembers *inner_class = &F.value;
+			if (const LSP::DocumentSymbol *const *symbol = inner_class->getptr(symbol_identifier)) {
+				r_list.push_back(*symbol);
+			}
+		}
+	}
+}
+
+GDScriptLanguageProtocol::LSPeer::~LSPeer() {
+	while (!parse_results.is_empty()) {
+		remove_cached_parser(parse_results.begin()->key);
+	}
+	while (!stale_parsers.is_empty()) {
+		remove_cached_parser(stale_parsers.begin()->key);
+	}
+}
+
 // clang-format off
 #define SET_DOCUMENT_METHOD(m_method) set_method(_STR(textDocument/m_method), callable_mp(text_document.ptr(), &GDScriptTextDocument::m_method))
 #define SET_COMPLETION_METHOD(m_method) set_method(_STR(completionItem/m_method), callable_mp(text_document.ptr(), &GDScriptTextDocument::m_method))
@@ -392,8 +571,6 @@ GDScriptLanguageProtocol::GDScriptLanguageProtocol() {
 
 	SET_COMPLETION_METHOD(resolve);
 
-	SET_WORKSPACE_METHOD(didDeleteFiles);
-
 	set_method("initialize", callable_mp(this, &GDScriptLanguageProtocol::initialize));
 	set_method("initialized", callable_mp(this, &GDScriptLanguageProtocol::initialized));
 
@@ -403,3 +580,6 @@ GDScriptLanguageProtocol::GDScriptLanguageProtocol() {
 #undef SET_DOCUMENT_METHOD
 #undef SET_COMPLETION_METHOD
 #undef SET_WORKSPACE_METHOD
+
+#undef LSP_CLIENT
+#undef LSP_CLIENT_V
diff --git a/modules/gdscript/language_server/gdscript_language_protocol.h b/modules/gdscript/language_server/gdscript_language_protocol.h
index afdd849b8d9..bff630e177a 100644
--- a/modules/gdscript/language_server/gdscript_language_protocol.h
+++ b/modules/gdscript/language_server/gdscript_language_protocol.h
@@ -41,9 +41,15 @@
 #define LSP_MAX_BUFFER_SIZE 4194304
 #define LSP_MAX_CLIENTS 8
 
+#define LSP_NO_CLIENT -1
+
 class GDScriptLanguageProtocol : public JSONRPC {
 	GDCLASS(GDScriptLanguageProtocol, JSONRPC)
 
+#ifdef TESTS_ENABLED
+	friend class TestGDScriptLanguageProtocolInitializer;
+#endif
+
 private:
 	struct LSPeer : RefCounted {
 		Ref<StreamPeerTCP> connection;
@@ -58,6 +64,24 @@ private:
 
 		Error handle_data();
 		Error send_data();
+
+		/**
+		 * Tracks all files that the client claimed, however for files deemed not relevant
+		 * to the server the `text` might not be persisted.
+		 */
+		HashMap<String, LSP::TextDocumentItem> managed_files;
+		HashMap<String, ExtendGDScriptParser *> parse_results;
+
+		void remove_cached_parser(const String &p_path);
+		ExtendGDScriptParser *parse_script(const String &p_path);
+
+		~LSPeer();
+
+	private:
+		// We can't cache parsers for scripts not managed by the editor since we have
+		// no way to invalidate the cache. We still need to keep track of those parsers
+		// to clean them up properly.
+		HashMap<String, ExtendGDScriptParser *> stale_parsers;
 	};
 
 	enum LSPErrorCode {
@@ -69,7 +93,7 @@ private:
 
 	HashMap<int, Ref<LSPeer>> clients;
 	Ref<TCPServer> server;
-	int latest_client_id = 0;
+	int latest_client_id = LSP_NO_CLIENT;
 	int next_client_id = 0;
 
 	int next_server_id = 0;
@@ -107,5 +131,27 @@ public:
 	bool is_smart_resolve_enabled() const;
 	bool is_goto_native_symbols_enabled() const;
 
+	// Text Document Synchronization
+	void lsp_did_open(const Dictionary &p_params);
+	void lsp_did_change(const Dictionary &p_params);
+	void lsp_did_close(const Dictionary &p_params);
+
+	/**
+	 * Returns a list of symbols that might be related to the document position.
+	 *
+	 * The result fulfills no semantic guarantees, nor is it guaranteed to be complete.
+	 * Should only be used for "smart resolve".
+	 */
+	void resolve_related_symbols(const LSP::TextDocumentPositionParams &p_doc_pos, List<const LSP::DocumentSymbol *> &r_list);
+
+	/**
+	 * Returns parse results for the given path, using the cache if available.
+	 * If no such file exists, or the file is not a GDScript file a `nullptr` is returned.
+	 */
+	ExtendGDScriptParser *get_parse_result(const String &p_path);
+
 	GDScriptLanguageProtocol();
+	~GDScriptLanguageProtocol() {
+		clients.clear();
+	}
 };
diff --git a/modules/gdscript/language_server/gdscript_text_document.cpp b/modules/gdscript/language_server/gdscript_text_document.cpp
index 1d985df41cf..ad0ccb338f0 100644
--- a/modules/gdscript/language_server/gdscript_text_document.cpp
+++ b/modules/gdscript/language_server/gdscript_text_document.cpp
@@ -63,29 +63,21 @@ void GDScriptTextDocument::_bind_methods() {
 }
 
 void GDScriptTextDocument::didOpen(const Variant &p_param) {
-	LSP::TextDocumentItem doc = load_document_item(p_param);
-	sync_script_content(doc.uri, doc.text);
-}
-
-void GDScriptTextDocument::didClose(const Variant &p_param) {
-	// Left empty on purpose. Godot does nothing special on closing a document,
-	// but it satisfies LSP clients that require didClose be implemented.
+	GDScriptLanguageProtocol::get_singleton()->lsp_did_open(p_param);
 }
 
 void GDScriptTextDocument::didChange(const Variant &p_param) {
-	LSP::TextDocumentItem doc = load_document_item(p_param);
-	Dictionary dict = p_param;
-	Array contentChanges = dict["contentChanges"];
-	for (int i = 0; i < contentChanges.size(); ++i) {
-		LSP::TextDocumentContentChangeEvent evt;
-		evt.load(contentChanges[i]);
-		doc.text = evt.text;
-	}
-	sync_script_content(doc.uri, doc.text);
+	GDScriptLanguageProtocol::get_singleton()->lsp_did_change(p_param);
+}
+
+void GDScriptTextDocument::didClose(const Variant &p_param) {
+	GDScriptLanguageProtocol::get_singleton()->lsp_did_close(p_param);
 }
 
 void GDScriptTextDocument::willSaveWaitUntil(const Variant &p_param) {
-	LSP::TextDocumentItem doc = load_document_item(p_param);
+	Dictionary dict = p_param;
+	LSP::TextDocumentIdentifier doc;
+	doc.load(dict["textDocument"]);
 
 	String path = GDScriptLanguageProtocol::get_singleton()->get_workspace()->get_file_path(doc.uri);
 	Ref<Script> scr = ResourceLoader::load(path);
@@ -95,12 +87,11 @@ void GDScriptTextDocument::willSaveWaitUntil(const Variant &p_param) {
 }
 
 void GDScriptTextDocument::didSave(const Variant &p_param) {
-	LSP::TextDocumentItem doc = load_document_item(p_param);
 	Dictionary dict = p_param;
+	LSP::TextDocumentIdentifier doc;
+	doc.load(dict["textDocument"]);
 	String text = dict["text"];
 
-	sync_script_content(doc.uri, text);
-
 	String path = GDScriptLanguageProtocol::get_singleton()->get_workspace()->get_file_path(doc.uri);
 	Ref<GDScript> scr = ResourceLoader::load(path);
 	if (scr.is_valid() && (scr->load_source_code(path) == OK)) {
@@ -126,13 +117,6 @@ void GDScriptTextDocument::reload_script(Ref<GDScript> p_to_reload_script) {
 	ScriptEditor::get_singleton()->trigger_live_script_reload(p_to_reload_script->get_path());
 }
 
-LSP::TextDocumentItem GDScriptTextDocument::load_document_item(const Variant &p_param) {
-	LSP::TextDocumentItem doc;
-	Dictionary params = p_param;
-	doc.load(params["textDocument"]);
-	return doc;
-}
-
 void GDScriptTextDocument::notify_client_show_symbol(const LSP::DocumentSymbol *symbol) {
 	ERR_FAIL_NULL(symbol);
 	GDScriptLanguageProtocol::get_singleton()->notify_client("gdscript/show_native_symbol", symbol->to_json(true));
@@ -172,8 +156,10 @@ Array GDScriptTextDocument::documentSymbol(const Dictionary &p_params) {
 	String uri = params["uri"];
 	String path = GDScriptLanguageProtocol::get_singleton()->get_workspace()->get_file_path(uri);
 	Array arr;
-	if (HashMap<String, ExtendGDScriptParser *>::ConstIterator parser = GDScriptLanguageProtocol::get_singleton()->get_workspace()->scripts.find(path)) {
-		LSP::DocumentSymbol symbol = parser->value->get_symbols();
+
+	ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
+	if (parser) {
+		LSP::DocumentSymbol symbol = parser->get_symbols();
 		arr.push_back(symbol.to_json(true));
 	}
 	return arr;
@@ -324,8 +310,9 @@ Dictionary GDScriptTextDocument::resolve(const Dictionary &p_params) {
 			}
 
 			if (!symbol) {
-				if (HashMap<String, ExtendGDScriptParser *>::ConstIterator E = GDScriptLanguageProtocol::get_singleton()->get_workspace()->scripts.find(class_name)) {
-					symbol = E->value->get_member_symbol(member_name, inner_class_name);
+				ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(class_name);
+				if (parser) {
+					symbol = parser->get_member_symbol(member_name, inner_class_name);
 				}
 			}
 		}
@@ -396,7 +383,7 @@ Variant GDScriptTextDocument::hover(const Dictionary &p_params) {
 		Dictionary ret;
 		Array contents;
 		List<const LSP::DocumentSymbol *> list;
-		GDScriptLanguageProtocol::get_singleton()->get_workspace()->resolve_related_symbols(params, list);
+		GDScriptLanguageProtocol::get_singleton()->resolve_related_symbols(params, list);
 		for (const LSP::DocumentSymbol *&E : list) {
 			if (const LSP::DocumentSymbol *s = E) {
 				contents.push_back(s->render().value);
@@ -473,11 +460,6 @@ GDScriptTextDocument::GDScriptTextDocument() {
 	file_checker = FileAccess::create(FileAccess::ACCESS_RESOURCES);
 }
 
-void GDScriptTextDocument::sync_script_content(const String &p_path, const String &p_content) {
-	String path = GDScriptLanguageProtocol::get_singleton()->get_workspace()->get_file_path(p_path);
-	GDScriptLanguageProtocol::get_singleton()->get_workspace()->parse_script(path, p_content);
-}
-
 void GDScriptTextDocument::show_native_symbol_in_editor(const String &p_symbol_id) {
 	callable_mp(ScriptEditor::get_singleton(), &ScriptEditor::goto_help).call_deferred(p_symbol_id);
 
@@ -500,7 +482,7 @@ Array GDScriptTextDocument::find_symbols(const LSP::TextDocumentPositionParams &
 		r_list.push_back(symbol);
 	} else if (GDScriptLanguageProtocol::get_singleton()->is_smart_resolve_enabled()) {
 		List<const LSP::DocumentSymbol *> list;
-		GDScriptLanguageProtocol::get_singleton()->get_workspace()->resolve_related_symbols(p_location, list);
+		GDScriptLanguageProtocol::get_singleton()->resolve_related_symbols(p_location, list);
 		for (const LSP::DocumentSymbol *&E : list) {
 			if (const LSP::DocumentSymbol *s = E) {
 				if (!s->uri.is_empty()) {
diff --git a/modules/gdscript/language_server/gdscript_text_document.h b/modules/gdscript/language_server/gdscript_text_document.h
index 5e3ef82140f..86cd675bacd 100644
--- a/modules/gdscript/language_server/gdscript_text_document.h
+++ b/modules/gdscript/language_server/gdscript_text_document.h
@@ -48,7 +48,6 @@ protected:
 
 private:
 	Array find_symbols(const LSP::TextDocumentPositionParams &p_location, List<const LSP::DocumentSymbol *> &r_list);
-	LSP::TextDocumentItem load_document_item(const Variant &p_param);
 	void notify_client_show_symbol(const LSP::DocumentSymbol *symbol);
 
 public:
@@ -59,7 +58,6 @@ public:
 	void didSave(const Variant &p_param);
 
 	void reload_script(Ref<GDScript> p_to_reload_script);
-	void sync_script_content(const String &p_path, const String &p_content);
 	void show_native_symbol_in_editor(const String &p_symbol_id);
 
 	Variant nativeSymbol(const Dictionary &p_params);
diff --git a/modules/gdscript/language_server/gdscript_workspace.cpp b/modules/gdscript/language_server/gdscript_workspace.cpp
index 6d44b9dd38c..39fc21ebd42 100644
--- a/modules/gdscript/language_server/gdscript_workspace.cpp
+++ b/modules/gdscript/language_server/gdscript_workspace.cpp
@@ -45,13 +45,16 @@
 
 void GDScriptWorkspace::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("apply_new_signal"), &GDScriptWorkspace::apply_new_signal);
-	ClassDB::bind_method(D_METHOD("didDeleteFiles"), &GDScriptWorkspace::didDeleteFiles);
-	ClassDB::bind_method(D_METHOD("parse_script", "path", "content"), &GDScriptWorkspace::parse_script);
-	ClassDB::bind_method(D_METHOD("parse_local_script", "path"), &GDScriptWorkspace::parse_local_script);
 	ClassDB::bind_method(D_METHOD("get_file_path", "uri"), &GDScriptWorkspace::get_file_path);
 	ClassDB::bind_method(D_METHOD("get_file_uri", "path"), &GDScriptWorkspace::get_file_uri);
 	ClassDB::bind_method(D_METHOD("publish_diagnostics", "path"), &GDScriptWorkspace::publish_diagnostics);
 	ClassDB::bind_method(D_METHOD("generate_script_api", "path"), &GDScriptWorkspace::generate_script_api);
+
+#ifndef DISABLE_DEPRECATED
+	ClassDB::bind_method(D_METHOD("didDeleteFiles"), &GDScriptWorkspace::didDeleteFiles);
+	ClassDB::bind_method(D_METHOD("parse_script", "path", "content"), &GDScriptWorkspace::parse_script);
+	ClassDB::bind_method(D_METHOD("parse_local_script", "path"), &GDScriptWorkspace::parse_script);
+#endif
 }
 
 void GDScriptWorkspace::apply_new_signal(Object *obj, String function, PackedStringArray args) {
@@ -106,37 +109,6 @@ void GDScriptWorkspace::apply_new_signal(Object *obj, String function, PackedStr
 	GDScriptLanguageProtocol::get_singleton()->request_client("workspace/applyEdit", params.to_json());
 }
 
-void GDScriptWorkspace::didDeleteFiles(const Dictionary &p_params) {
-	Array files = p_params["files"];
-	for (int i = 0; i < files.size(); ++i) {
-		Dictionary file = files[i];
-		String uri = file["uri"];
-		String path = get_file_path(uri);
-		parse_script(path, "");
-	}
-}
-
-void GDScriptWorkspace::remove_cache_parser(const String &p_path) {
-	HashMap<String, ExtendGDScriptParser *>::Iterator parser = parse_results.find(p_path);
-	HashMap<String, ExtendGDScriptParser *>::Iterator scr = scripts.find(p_path);
-	if (parser && scr) {
-		if (scr->value && scr->value == parser->value) {
-			memdelete(scr->value);
-		} else {
-			memdelete(scr->value);
-			memdelete(parser->value);
-		}
-		parse_results.erase(p_path);
-		scripts.erase(p_path);
-	} else if (parser) {
-		memdelete(parser->value);
-		parse_results.erase(p_path);
-	} else if (scr) {
-		memdelete(scr->value);
-		scripts.erase(p_path);
-	}
-}
-
 const LSP::DocumentSymbol *GDScriptWorkspace::get_native_symbol(const String &p_class, const String &p_member) const {
 	StringName class_name = p_class;
 	StringName empty;
@@ -168,9 +140,9 @@ const LSP::DocumentSymbol *GDScriptWorkspace::get_native_symbol(const String &p_
 }
 
 const LSP::DocumentSymbol *GDScriptWorkspace::get_script_symbol(const String &p_path) const {
-	HashMap<String, ExtendGDScriptParser *>::ConstIterator S = scripts.find(p_path);
-	if (S) {
-		return &(S->value->get_symbols());
+	ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(p_path);
+	if (parser) {
+		return &(parser->get_symbols());
 	}
 	return nullptr;
 }
@@ -219,18 +191,13 @@ void GDScriptWorkspace::reload_all_workspace_scripts() {
 	List<String> paths;
 	list_script_files("res://", paths);
 	for (const String &path : paths) {
-		Error err;
-		String content = FileAccess::get_file_as_string(path, &err);
-		ERR_CONTINUE(err != OK);
-		err = parse_script(path, content);
-
-		if (err != OK) {
-			HashMap<String, ExtendGDScriptParser *>::Iterator S = parse_results.find(path);
-			String err_msg = "Failed parse script " + path;
-			if (S) {
-				err_msg += "\n" + S->value->get_errors().front()->get().message;
+		ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
+		if (parser == nullptr || parser->parse_result != OK) {
+			String err_msg = "LSP: Failed to parse script: " + path;
+			if (parser) {
+				err_msg += "\n" + parser->get_errors().front()->get().message;
 			}
-			ERR_CONTINUE_MSG(err != OK, err_msg);
+			ERR_PRINT(err_msg);
 		}
 	}
 }
@@ -260,30 +227,6 @@ void GDScriptWorkspace::list_script_files(const String &p_root_dir, List<String>
 	}
 }
 
-ExtendGDScriptParser *GDScriptWorkspace::get_parse_successed_script(const String &p_path) {
-	HashMap<String, ExtendGDScriptParser *>::Iterator S = scripts.find(p_path);
-	if (!S) {
-		parse_local_script(p_path);
-		S = scripts.find(p_path);
-	}
-	if (S) {
-		return S->value;
-	}
-	return nullptr;
-}
-
-ExtendGDScriptParser *GDScriptWorkspace::get_parse_result(const String &p_path) {
-	HashMap<String, ExtendGDScriptParser *>::Iterator S = parse_results.find(p_path);
-	if (!S) {
-		parse_local_script(p_path);
-		S = parse_results.find(p_path);
-	}
-	if (S) {
-		return S->value;
-	}
-	return nullptr;
-}
-
 #define HANDLE_DOC(m_string) ((is_native ? DTR(m_string) : (m_string)).strip_edges())
 
 Error GDScriptWorkspace::initialize() {
@@ -427,11 +370,6 @@ Error GDScriptWorkspace::initialize() {
 			}
 			native_members.insert(E.key, members);
 		}
-
-		// Cache member completions.
-		for (const KeyValue<String, ExtendGDScriptParser *> &S : scripts) {
-			S.value->get_member_completions();
-		}
 	}
 
 	EditorNode *editor_node = EditorNode::get_singleton();
@@ -440,29 +378,6 @@ Error GDScriptWorkspace::initialize() {
 	return OK;
 }
 
-Error GDScriptWorkspace::parse_script(const String &p_path, const String &p_content) {
-	ExtendGDScriptParser *parser = memnew(ExtendGDScriptParser);
-	Error err = parser->parse(p_content, p_path);
-	HashMap<String, ExtendGDScriptParser *>::Iterator last_parser = parse_results.find(p_path);
-	HashMap<String, ExtendGDScriptParser *>::Iterator last_script = scripts.find(p_path);
-
-	if (err == OK) {
-		remove_cache_parser(p_path);
-		parse_results[p_path] = parser;
-		scripts[p_path] = parser;
-
-	} else {
-		if (last_parser && last_script && last_parser->value != last_script->value) {
-			memdelete(last_parser->value);
-		}
-		parse_results[p_path] = parser;
-	}
-
-	publish_diagnostics(p_path);
-
-	return err;
-}
-
 static bool is_valid_rename_target(const LSP::DocumentSymbol *p_symbol) {
 	// Must be valid symbol.
 	if (!p_symbol) {
@@ -505,8 +420,8 @@ bool GDScriptWorkspace::can_rename(const LSP::TextDocumentPositionParams &p_doc_
 	}
 
 	String path = get_file_path(p_doc_pos.textDocument.uri);
-	if (const ExtendGDScriptParser *parser = get_parse_result(path)) {
-		// We only care about the range.
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
+	if (parser) {
 		_ALLOW_DISCARD_ parser->get_identifier_under_position(p_doc_pos.position, r_range);
 		r_symbol = *reference_symbol;
 		return true;
@@ -519,7 +434,8 @@ Vector<LSP::Location> GDScriptWorkspace::find_usages_in_file(const LSP::Document
 	Vector<LSP::Location> usages;
 
 	String identifier = p_symbol.name;
-	if (const ExtendGDScriptParser *parser = get_parse_result(p_file_path)) {
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(p_file_path);
+	if (parser) {
 		const PackedStringArray &content = parser->get_lines();
 		for (int i = 0; i < content.size(); ++i) {
 			String line = content[i];
@@ -570,15 +486,6 @@ Vector<LSP::Location> GDScriptWorkspace::find_all_usages(const LSP::DocumentSymb
 	return usages;
 }
 
-Error GDScriptWorkspace::parse_local_script(const String &p_path) {
-	Error err;
-	String content = FileAccess::get_file_as_string(p_path, &err);
-	if (err == OK) {
-		err = parse_script(p_path, content);
-	}
-	return err;
-}
-
 String GDScriptWorkspace::get_file_path(const String &p_uri) {
 	int port;
 	String scheme;
@@ -671,9 +578,10 @@ String GDScriptWorkspace::get_file_uri(const String &p_path) const {
 void GDScriptWorkspace::publish_diagnostics(const String &p_path) {
 	Dictionary params;
 	Array errors;
-	HashMap<String, ExtendGDScriptParser *>::ConstIterator ele = parse_results.find(p_path);
-	if (ele) {
-		const Vector<LSP::Diagnostic> &list = ele->value->get_diagnostics();
+
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(p_path);
+	if (parser) {
+		const Vector<LSP::Diagnostic> &list = parser->get_diagnostics();
 		errors.resize(list.size());
 		for (int i = 0; i < list.size(); ++i) {
 			errors[i] = list[i].to_json();
@@ -734,7 +642,8 @@ void GDScriptWorkspace::completion(const LSP::CompletionParams &p_params, List<S
 	String call_hint;
 	bool forced = false;
 
-	if (const ExtendGDScriptParser *parser = get_parse_result(path)) {
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
+	if (parser) {
 		Node *owner_scene_node = _get_owner_scene_node(path);
 
 		Array stack;
@@ -771,7 +680,9 @@ const LSP::DocumentSymbol *GDScriptWorkspace::resolve_symbol(const LSP::TextDocu
 	const LSP::DocumentSymbol *symbol = nullptr;
 
 	String path = get_file_path(p_doc_pos.textDocument.uri);
-	if (const ExtendGDScriptParser *parser = get_parse_result(path)) {
+
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
+	if (parser) {
 		String symbol_identifier = p_symbol_name;
 		if (symbol_identifier.get_slice_count("(") > 0) {
 			symbol_identifier = symbol_identifier.get_slicec('(', 0);
@@ -803,7 +714,8 @@ const LSP::DocumentSymbol *GDScriptWorkspace::resolve_symbol(const LSP::TextDocu
 							target_script_path = ret.script_path;
 						}
 
-						if (const ExtendGDScriptParser *target_parser = get_parse_result(target_script_path)) {
+						const ExtendGDScriptParser *target_parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(target_script_path);
+						if (target_parser) {
 							symbol = target_parser->get_symbol_defined_at_line(LINE_NUMBER_TO_INDEX(ret.location), symbol_identifier);
 
 							if (symbol) {
@@ -836,37 +748,6 @@ const LSP::DocumentSymbol *GDScriptWorkspace::resolve_symbol(const LSP::TextDocu
 	return symbol;
 }
 
-void GDScriptWorkspace::resolve_related_symbols(const LSP::TextDocumentPositionParams &p_doc_pos, List<const LSP::DocumentSymbol *> &r_list) {
-	String path = get_file_path(p_doc_pos.textDocument.uri);
-	if (const ExtendGDScriptParser *parser = get_parse_result(path)) {
-		String symbol_identifier;
-		LSP::Range range;
-		symbol_identifier = parser->get_identifier_under_position(p_doc_pos.position, range);
-
-		for (const KeyValue<StringName, ClassMembers> &E : native_members) {
-			const ClassMembers &members = native_members.get(E.key);
-			if (const LSP::DocumentSymbol *const *symbol = members.getptr(symbol_identifier)) {
-				r_list.push_back(*symbol);
-			}
-		}
-
-		for (const KeyValue<String, ExtendGDScriptParser *> &E : scripts) {
-			const ExtendGDScriptParser *scr = E.value;
-			const ClassMembers &members = scr->get_members();
-			if (const LSP::DocumentSymbol *const *symbol = members.getptr(symbol_identifier)) {
-				r_list.push_back(*symbol);
-			}
-
-			for (const KeyValue<String, ClassMembers> &F : scr->get_inner_classes()) {
-				const ClassMembers *inner_class = &F.value;
-				if (const LSP::DocumentSymbol *const *symbol = inner_class->getptr(symbol_identifier)) {
-					r_list.push_back(*symbol);
-				}
-			}
-		}
-	}
-}
-
 const LSP::DocumentSymbol *GDScriptWorkspace::resolve_native_symbol(const LSP::NativeSymbolInspectParams &p_params) {
 	if (HashMap<StringName, LSP::DocumentSymbol>::Iterator E = native_symbols.find(p_params.native_class)) {
 		const LSP::DocumentSymbol &symbol = E->value;
@@ -885,7 +766,8 @@ const LSP::DocumentSymbol *GDScriptWorkspace::resolve_native_symbol(const LSP::N
 }
 
 void GDScriptWorkspace::resolve_document_links(const String &p_uri, List<LSP::DocumentLink> &r_list) {
-	if (const ExtendGDScriptParser *parser = get_parse_successed_script(get_file_path(p_uri))) {
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(get_file_path(p_uri));
+	if (parser && parser->parse_result == Error::OK) {
 		const List<LSP::DocumentLink> &links = parser->get_document_links();
 		for (const LSP::DocumentLink &E : links) {
 			r_list.push_back(E);
@@ -895,14 +777,17 @@ void GDScriptWorkspace::resolve_document_links(const String &p_uri, List<LSP::Do
 
 Dictionary GDScriptWorkspace::generate_script_api(const String &p_path) {
 	Dictionary api;
-	if (const ExtendGDScriptParser *parser = get_parse_successed_script(p_path)) {
+
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(p_path);
+	if (parser) {
 		api = parser->generate_api();
 	}
 	return api;
 }
 
 Error GDScriptWorkspace::resolve_signature(const LSP::TextDocumentPositionParams &p_doc_pos, LSP::SignatureHelp &r_signature) {
-	if (const ExtendGDScriptParser *parser = get_parse_result(get_file_path(p_doc_pos.textDocument.uri))) {
+	const ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(get_file_path(p_doc_pos.textDocument.uri));
+	if (parser) {
 		LSP::TextDocumentPositionParams text_pos;
 		text_pos.textDocument = p_doc_pos.textDocument;
 
@@ -912,7 +797,7 @@ Error GDScriptWorkspace::resolve_signature(const LSP::TextDocumentPositionParams
 			if (const LSP::DocumentSymbol *symbol = resolve_symbol(text_pos)) {
 				symbols.push_back(symbol);
 			} else if (GDScriptLanguageProtocol::get_singleton()->is_smart_resolve_enabled()) {
-				GDScriptLanguageProtocol::get_singleton()->get_workspace()->resolve_related_symbols(text_pos, symbols);
+				GDScriptLanguageProtocol::get_singleton()->resolve_related_symbols(text_pos, symbols);
 			}
 
 			for (const LSP::DocumentSymbol *const &symbol : symbols) {
@@ -942,18 +827,4 @@ Error GDScriptWorkspace::resolve_signature(const LSP::TextDocumentPositionParams
 
 GDScriptWorkspace::GDScriptWorkspace() {}
 
-GDScriptWorkspace::~GDScriptWorkspace() {
-	HashSet<String> cached_parsers;
-
-	for (const KeyValue<String, ExtendGDScriptParser *> &E : parse_results) {
-		cached_parsers.insert(E.key);
-	}
-
-	for (const KeyValue<String, ExtendGDScriptParser *> &E : scripts) {
-		cached_parsers.insert(E.key);
-	}
-
-	for (const String &E : cached_parsers) {
-		remove_cache_parser(E);
-	}
-}
+GDScriptWorkspace::~GDScriptWorkspace() {}
diff --git a/modules/gdscript/language_server/gdscript_workspace.h b/modules/gdscript/language_server/gdscript_workspace.h
index 84278f7c8a7..7386f45ca88 100644
--- a/modules/gdscript/language_server/gdscript_workspace.h
+++ b/modules/gdscript/language_server/gdscript_workspace.h
@@ -30,7 +30,7 @@
 
 #pragma once
 
-#include "../gdscript_parser.h"
+#include "core/error/error_macros.h"
 #include "gdscript_extend_parser.h"
 #include "godot_lsp.h"
 
@@ -44,9 +44,20 @@ private:
 	void _get_owners(EditorFileSystemDirectory *efsd, String p_path, List<String> &owners);
 	Node *_get_owner_scene_node(String p_path);
 
+#ifndef DISABLE_DEPRECATED
+	void didDeleteFiles() {}
+	Error parse_script(const String &p_path, const String &p_content) {
+		WARN_DEPRECATED;
+		return Error::FAILED;
+	}
+	Error parse_local_script(const String &p_path) {
+		WARN_DEPRECATED;
+		return Error::FAILED;
+	}
+#endif // DISABLE_DEPRECATED
+
 protected:
 	static void _bind_methods();
-	void remove_cache_parser(const String &p_path);
 	bool initialized = false;
 	HashMap<StringName, LSP::DocumentSymbol> native_symbols;
 
@@ -60,9 +71,6 @@ protected:
 
 	void reload_all_workspace_scripts();
 
-	ExtendGDScriptParser *get_parse_successed_script(const String &p_path);
-	ExtendGDScriptParser *get_parse_result(const String &p_path);
-
 	void list_script_files(const String &p_root_dir, List<String> &r_files);
 
 	void apply_new_signal(Object *obj, String function, PackedStringArray args);
@@ -71,16 +79,11 @@ public:
 	String root;
 	String root_uri;
 
-	HashMap<String, ExtendGDScriptParser *> scripts;
-	HashMap<String, ExtendGDScriptParser *> parse_results;
 	HashMap<StringName, ClassMembers> native_members;
 
 public:
 	Error initialize();
 
-	Error parse_script(const String &p_path, const String &p_content);
-	Error parse_local_script(const String &p_path);
-
 	String get_file_path(const String &p_uri);
 	String get_file_uri(const String &p_path) const;
 
@@ -88,12 +91,11 @@ public:
 	void completion(const LSP::CompletionParams &p_params, List<ScriptLanguage::CodeCompletionOption> *r_options);
 
 	const LSP::DocumentSymbol *resolve_symbol(const LSP::TextDocumentPositionParams &p_doc_pos, const String &p_symbol_name = "", bool p_func_required = false);
-	void resolve_related_symbols(const LSP::TextDocumentPositionParams &p_doc_pos, List<const LSP::DocumentSymbol *> &r_list);
+
 	const LSP::DocumentSymbol *resolve_native_symbol(const LSP::NativeSymbolInspectParams &p_params);
 	void resolve_document_links(const String &p_uri, List<LSP::DocumentLink> &r_list);
 	Dictionary generate_script_api(const String &p_path);
 	Error resolve_signature(const LSP::TextDocumentPositionParams &p_doc_pos, LSP::SignatureHelp &r_signature);
-	void didDeleteFiles(const Dictionary &p_params);
 	Dictionary rename(const LSP::TextDocumentPositionParams &p_doc_pos, const String &new_name);
 	bool can_rename(const LSP::TextDocumentPositionParams &p_doc_pos, LSP::DocumentSymbol &r_symbol, LSP::Range &r_range);
 	Vector<LSP::Location> find_usages_in_file(const LSP::DocumentSymbol &p_symbol, const String &p_file_path);
diff --git a/modules/gdscript/language_server/godot_lsp.h b/modules/gdscript/language_server/godot_lsp.h
index f256e95916c..a449317b338 100644
--- a/modules/gdscript/language_server/godot_lsp.h
+++ b/modules/gdscript/language_server/godot_lsp.h
@@ -663,6 +663,11 @@ struct DocumentOnTypeFormattingOptions {
 	}
 };
 
+enum class LanguageId {
+	GDSCRIPT,
+	OTHER,
+};
+
 struct TextDocumentItem {
 	/**
 	 * The text document's URI.
@@ -672,7 +677,7 @@ struct TextDocumentItem {
 	/**
 	 * The text document's language identifier.
 	 */
-	String languageId;
+	LanguageId languageId;
 
 	/**
 	 * The version number of this document (it will increase after each
@@ -687,18 +692,17 @@ struct TextDocumentItem {
 
 	void load(const Dictionary &p_dict) {
 		uri = p_dict["uri"];
-		languageId = p_dict.get("languageId", "");
-		version = p_dict.get("version", 0);
-		text = p_dict.get("text", "");
-	}
+		version = p_dict["version"];
+		text = p_dict["text"];
 
-	Dictionary to_json() const {
-		Dictionary dict;
-		dict["uri"] = uri;
-		dict["languageId"] = languageId;
-		dict["version"] = version;
-		dict["text"] = text;
-		return dict;
+		// Clients should use "gdscript" as language id, but we can't enforce it. The Rider integration
+		// in particular uses "gd" at the time of writing. We normalize the id to make it easier to work with.
+		String rawLanguageId = p_dict["languageId"];
+		if (rawLanguageId == "gdscript" || rawLanguageId == "gd") {
+			languageId = LanguageId::GDSCRIPT;
+		} else {
+			languageId = LanguageId::OTHER;
+		}
 	}
 };
 
@@ -1702,16 +1706,8 @@ struct FileOperations {
  * Workspace specific server capabilities
  */
 struct Workspace {
-	/**
-	 * The server is interested in file notifications/requests.
-	 */
-	FileOperations fileOperations;
-
 	Dictionary to_json() const {
 		Dictionary dict;
-
-		dict["fileOperations"] = fileOperations.to_json();
-
 		return dict;
 	}
 };
diff --git a/modules/gdscript/tests/test_lsp.h b/modules/gdscript/tests/test_lsp.h
index 4f67d40f610..63c56734dbb 100644
--- a/modules/gdscript/tests/test_lsp.h
+++ b/modules/gdscript/tests/test_lsp.h
@@ -54,6 +54,17 @@
 
 #include "thirdparty/doctest/doctest.h"
 
+class TestGDScriptLanguageProtocolInitializer {
+public:
+	static void setup_client() {
+		GDScriptLanguageProtocol *proto = GDScriptLanguageProtocol::get_singleton();
+		Ref<GDScriptLanguageProtocol::LSPeer> peer = memnew(GDScriptLanguageProtocol::LSPeer);
+		proto->clients.insert(proto->next_client_id, peer);
+		proto->latest_client_id = proto->next_client_id;
+		proto->next_client_id++;
+	}
+};
+
 template <>
 struct doctest::StringMaker<LSP::Position> {
 	static doctest::String convert(const LSP::Position &p_val) {
@@ -96,6 +107,7 @@ GDScriptLanguageProtocol *initialize(const String &p_root) {
 	init_language(absolute_root);
 
 	GDScriptLanguageProtocol *proto = memnew(GDScriptLanguageProtocol);
+	TestGDScriptLanguageProtocolInitializer::setup_client();
 
 	Ref<GDScriptWorkspace> workspace = GDScriptLanguageProtocol::get_singleton()->get_workspace();
 	workspace->root = absolute_root;
@@ -502,8 +514,7 @@ func f():
 
 			for (const String &path : paths) {
 				assert_no_errors_in(path);
-				GDScriptLanguageProtocol::get_singleton()->get_workspace()->parse_local_script(path);
-				ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_workspace()->parse_results[path];
+				ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
 				REQUIRE(parser);
 				LSP::DocumentSymbol cls = parser->get_symbols();
 
@@ -515,8 +526,7 @@ func f():
 		SUBCASE("Documentation is correctly set") {
 			String path = "res://lsp/doc_comments.gd";
 			assert_no_errors_in(path);
-			GDScriptLanguageProtocol::get_singleton()->get_workspace()->parse_local_script(path);
-			ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_workspace()->parse_results[path];
+			ExtendGDScriptParser *parser = GDScriptLanguageProtocol::get_singleton()->get_parse_result(path);
 			REQUIRE(parser);
 			LSP::DocumentSymbol cls = parser->get_symbols();
 			REQUIRE(cls.documentation.contains("brief"));