Mono: Fixes annotated signal loading in exported binaries

(cherry picked from commit 489c9adf03)

modules/mono/csharp_script.cpp

@@ -745,10 +745,9 @@ void CSharpLanguage::reload_assemblies_if_needed(bool p_soft_reload) {
 	for (Map<Ref<CSharpScript>, Map<ObjectID, List<Pair<StringName, Variant> > > >::Element *E = to_reload.front(); E; E = E->next()) {
 
 		Ref<CSharpScript> scr = E->key();
-		scr->signals_invalidated = true;
 		scr->exports_invalidated = true;
+		scr->signals_invalidated = true;
 		scr->reload(p_soft_reload);
-		scr->update_signals();
 		scr->update_exports();
 
 		//restore state if saved
@@ -1573,37 +1572,33 @@ bool CSharpScript::_update_exports() {
 	return false;
 }
 
-bool CSharpScript::_update_signals() {
+void CSharpScript::load_script_signals(GDMonoClass *p_class, GDMonoClass *p_native_class) {
-	if (!valid)
-		return false;
 
-	bool changed = false;
+	// no need to load the script's signals more than once
-
+	if (!signals_invalidated) {
-	if (signals_invalidated) {
+		return;
-		signals_invalidated = false;
-
-		GDMonoClass *top = script_class;
-
-		_signals.clear();
-		changed = true; // TODO Do a real check for change
-
-		while (top && top != native) {
-			const Vector<GDMonoClass *> &delegates = top->get_all_delegates();
-			for (int i = delegates.size() - 1; i >= 0; --i) {
-				Vector<Argument> parameters;
-
-				GDMonoClass *delegate = delegates[i];
-
-				if (_get_signal(top, delegate, parameters)) {
-					_signals[delegate->get_name()] = parameters;
-				}
-			}
-
-			top = top->get_parent_class();
-		}
 	}
 
-	return changed;
+	// make sure this classes signals are empty when loading for the first time
+	_signals.clear();
+
+	GDMonoClass *top = p_class;
+	while (top && top != p_native_class) {
+		const Vector<GDMonoClass *> &delegates = top->get_all_delegates();
+		for (int i = delegates.size() - 1; i >= 0; --i) {
+			Vector<Argument> parameters;
+
+			GDMonoClass *delegate = delegates[i];
+
+			if (_get_signal(top, delegate, parameters)) {
+				_signals[delegate->get_name()] = parameters;
+			}
+		}
+
+		top = top->get_parent_class();
+	}
+
+	signals_invalidated = false;
 }
 
 bool CSharpScript::_get_signal(GDMonoClass *p_class, GDMonoClass *p_delegate, Vector<Argument> &params) {
@@ -1836,6 +1831,8 @@ Ref<CSharpScript> CSharpScript::create_for_managed_type(GDMonoClass *p_class) {
 		top = top->get_parent_class();
 	}
 
+	script->load_script_signals(script->script_class, script->native);
+
 	return script;
 }
 
@@ -1961,7 +1958,6 @@ ScriptInstance *CSharpScript::instance_create(Object *p_this) {
 		PlaceHolderScriptInstance *si = memnew(PlaceHolderScriptInstance(CSharpLanguage::get_singleton(), Ref<Script>(this), p_this));
 		placeholders.insert(si);
 		_update_exports();
-		_update_signals();
 		return si;
 #else
 		return NULL;
@@ -1980,8 +1976,6 @@ ScriptInstance *CSharpScript::instance_create(Object *p_this) {
 		ERR_FAIL_V(NULL);
 	}
 
-	update_signals();
-
 	if (native) {
 		String native_name = native->get_name();
 		if (!ClassDB::is_parent_class(p_this->get_class_name(), native_name)) {
@@ -2102,6 +2096,8 @@ Error CSharpScript::reload(bool p_keep_state) {
 				top->fetch_methods_with_godot_api_checks(native);
 				top = top->get_parent_class();
 			}
+
+			load_script_signals(script_class, native);
 		}
 
 		return OK;
@@ -2161,10 +2157,6 @@ void CSharpScript::get_script_signal_list(List<MethodInfo> *r_signals) const {
 	}
 }
 
-void CSharpScript::update_signals() {
-	_update_signals();
-}
-
 Ref<Script> CSharpScript::get_base_script() const {
 
 	// TODO search in metadata file once we have it, not important any way?
@@ -2229,9 +2221,10 @@ CSharpScript::CSharpScript() :
 #ifdef TOOLS_ENABLED
 	source_changed_cache = false;
 	exports_invalidated = true;
-	signals_invalidated = true;
 #endif
 
+	signals_invalidated = true;
+
 	_resource_path_changed();
 
 #ifdef DEBUG_ENABLED

modules/mono/csharp_script.h

@@ -111,7 +111,7 @@ class CSharpScript : public Script {
 
 	void _clear();
 
-	bool _update_signals();
+	void load_script_signals(GDMonoClass *p_class, GDMonoClass *p_native_class);
 	bool _get_signal(GDMonoClass *p_class, GDMonoClass *p_delegate, Vector<Argument> &params);
 
 	bool _update_exports();
@@ -149,7 +149,6 @@ public:
 
 	virtual bool has_script_signal(const StringName &p_signal) const;
 	virtual void get_script_signal_list(List<MethodInfo> *r_signals) const;
-	virtual void update_signals();
 
 	/* TODO */ virtual bool get_property_default_value(const StringName &p_property, Variant &r_value) const;
 	virtual void get_script_property_list(List<PropertyInfo> *p_list) const;