1 files changed, 285 insertions, 16 deletions

diff --git a/modules/gdnative/nativescript/nativescript.cpp b/modules/gdnative/nativescript/nativescript.cpp
index 61b59f92e8..f2e9bef467 100644
--- a/modules/gdnative/nativescript/nativescript.cpp
+++ b/modules/gdnative/nativescript/nativescript.cpp
@@ -68,6 +68,11 @@ void NativeScript::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_library", "library"), &NativeScript::set_library);
 	ClassDB::bind_method(D_METHOD("get_library"), &NativeScript::get_library);
 
+	ClassDB::bind_method(D_METHOD("get_class_documentation"), &NativeScript::get_class_documentation);
+	ClassDB::bind_method(D_METHOD("get_method_documentation", "method"), &NativeScript::get_method_documentation);
+	ClassDB::bind_method(D_METHOD("get_signal_documentation", "signal_name"), &NativeScript::get_signal_documentation);
+	ClassDB::bind_method(D_METHOD("get_property_documentation", "path"), &NativeScript::get_property_documentation);
+
 	ADD_PROPERTYNZ(PropertyInfo(Variant::STRING, "class_name"), "set_class_name", "get_class_name");
 	ADD_PROPERTYNZ(PropertyInfo(Variant::OBJECT, "library", PROPERTY_HINT_RESOURCE_TYPE, "GDNativeLibrary"), "set_library", "get_library");
 
@@ -373,6 +378,86 @@ void NativeScript::get_script_property_list(List<PropertyInfo> *p_list) const {
 	}
 }
 
+String NativeScript::get_class_documentation() const {
+	NativeScriptDesc *script_data = get_script_desc();
+
+	if (!script_data) {
+		ERR_EXPLAIN("Attempt to get class documentation on invalid NativeScript");
+		ERR_FAIL_V("");
+	}
+
+	return script_data->documentation;
+}
+
+String NativeScript::get_method_documentation(const StringName &p_method) const {
+	NativeScriptDesc *script_data = get_script_desc();
+
+	if (!script_data) {
+		ERR_EXPLAIN("Attempt to get method documentation on invalid NativeScript");
+		ERR_FAIL_V("");
+	}
+
+	while (script_data) {
+
+		Map<StringName, NativeScriptDesc::Method>::Element *method = script_data->methods.find(p_method);
+
+		if (method) {
+			return method->get().documentation;
+		}
+
+		script_data = script_data->base_data;
+	}
+
+	ERR_EXPLAIN("Attempt to get method documentation for non-existent method");
+	ERR_FAIL_V("");
+}
+
+String NativeScript::get_signal_documentation(const StringName &p_signal_name) const {
+	NativeScriptDesc *script_data = get_script_desc();
+
+	if (!script_data) {
+		ERR_EXPLAIN("Attempt to get signal documentation on invalid NativeScript");
+		ERR_FAIL_V("");
+	}
+
+	while (script_data) {
+
+		Map<StringName, NativeScriptDesc::Signal>::Element *signal = script_data->signals_.find(p_signal_name);
+
+		if (signal) {
+			return signal->get().documentation;
+		}
+
+		script_data = script_data->base_data;
+	}
+
+	ERR_EXPLAIN("Attempt to get signal documentation for non-existent signal");
+	ERR_FAIL_V("");
+}
+
+String NativeScript::get_property_documentation(const StringName &p_path) const {
+	NativeScriptDesc *script_data = get_script_desc();
+
+	if (!script_data) {
+		ERR_EXPLAIN("Attempt to get property documentation on invalid NativeScript");
+		ERR_FAIL_V("");
+	}
+
+	while (script_data) {
+
+		OrderedHashMap<StringName, NativeScriptDesc::Property>::Element property = script_data->properties.find(p_path);
+
+		if (property) {
+			return property.get().documentation;
+		}
+
+		script_data = script_data->base_data;
+	}
+
+	ERR_EXPLAIN("Attempt to get property documentation for non-existent signal");
+	ERR_FAIL_V("");
+}
+
 Variant NativeScript::_new(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
 
 	if (lib_path.empty() || class_name.empty() || library.is_null()) {
@@ -398,6 +483,11 @@ Variant NativeScript::_new(const Variant **p_args, int p_argcount, Variant::Call
 		owner = memnew(Reference);
 	}
 
+	if (!owner) {
+		r_error.error = Variant::CallError::CALL_ERROR_INSTANCE_IS_NULL;
+		return Variant();
+	}
+
 	Reference *r = Object::cast_to<Reference>(owner);
 	if (r) {
 		ref = REF(r);
@@ -605,7 +695,7 @@ Variant::Type NativeScriptInstance::get_property_type(const StringName &p_name,
 }
 
 void NativeScriptInstance::get_method_list(List<MethodInfo> *p_list) const {
-	script->get_method_list(p_list);
+	script->get_script_method_list(p_list);
 }
 
 bool NativeScriptInstance::has_method(const StringName &p_method) const {
@@ -790,9 +880,55 @@ NativeScriptInstance::~NativeScriptInstance() {
 
 NativeScriptLanguage *NativeScriptLanguage::singleton;
 
-void NativeScriptLanguage::_unload_stuff() {
+void NativeScriptLanguage::_unload_stuff(bool p_reload) {
 	for (Map<String, Map<StringName, NativeScriptDesc> >::Element *L = library_classes.front(); L; L = L->next()) {
-		for (Map<StringName, NativeScriptDesc>::Element *C = L->get().front(); C; C = C->next()) {
+
+		String lib_path = L->key();
+		Map<StringName, NativeScriptDesc> classes = L->get();
+
+		if (p_reload) {
+
+			Map<String, Ref<GDNative> >::Element *E = library_gdnatives.find(lib_path);
+			Ref<GDNative> gdn;
+
+			if (E) {
+				gdn = E->get();
+			}
+
+			bool should_reload = false;
+
+			if (gdn.is_valid()) {
+				Ref<GDNativeLibrary> lib = gdn->get_library();
+				if (lib.is_valid()) {
+					should_reload = lib->is_reloadable();
+				}
+			}
+
+			if (!should_reload) {
+				continue;
+			}
+		}
+
+		Map<String, Ref<GDNative> >::Element *E = library_gdnatives.find(lib_path);
+		Ref<GDNative> gdn;
+
+		if (E) {
+			gdn = E->get();
+		}
+
+		if (gdn.is_valid() && gdn->get_library().is_valid()) {
+			Ref<GDNativeLibrary> lib = gdn->get_library();
+			void *terminate_fn;
+			Error err = gdn->get_symbol(lib->get_symbol_prefix() + _terminate_call_name, terminate_fn, true);
+
+			if (err == OK) {
+				void (*terminate)(void *) = (void (*)(void *))terminate_fn;
+
+				terminate((void *)&lib_path);
+			}
+		}
+
+		for (Map<StringName, NativeScriptDesc>::Element *C = classes.front(); C; C = C->next()) {
 
 			// free property stuff first
 			for (OrderedHashMap<StringName, NativeScriptDesc::Property>::Element P = C->get().properties.front(); P; P = P.next()) {
@@ -830,12 +966,14 @@ NativeScriptLanguage::~NativeScriptLanguage() {
 
 	for (Map<String, Ref<GDNative> >::Element *L = NSL->library_gdnatives.front(); L; L = L->next()) {
 
-		L->get()->terminate();
-		NSL->library_classes.clear();
-		NSL->library_gdnatives.clear();
-		NSL->library_script_users.clear();
+		if (L->get().is_valid())
+			L->get()->terminate();
 	}
 
+	NSL->library_classes.clear();
+	NSL->library_gdnatives.clear();
+	NSL->library_script_users.clear();
+
 #ifndef NO_THREADS
 	memdelete(mutex);
 #endif
@@ -897,7 +1035,7 @@ Ref<Script> NativeScriptLanguage::get_template(const String &p_class_name, const
 	return Ref<NativeScript>(s);
 }
 bool NativeScriptLanguage::validate(const String &p_script, int &r_line_error, int &r_col_error, String &r_test_error, const String &p_path, List<String> *r_functions) const {
-	return false;
+	return true;
 }
 
 Script *NativeScriptLanguage::create_script() const {
@@ -977,6 +1115,116 @@ int NativeScriptLanguage::profiling_get_frame_data(ProfilingInfo *p_info_arr, in
 	return 0;
 }
 
+int NativeScriptLanguage::register_binding_functions(godot_instance_binding_functions p_binding_functions) {
+
+	// find index
+
+	int idx = -1;
+
+	for (int i = 0; i < binding_functions.size(); i++) {
+		if (!binding_functions[i].first) {
+			// free, we'll take it
+			idx = i;
+			break;
+		}
+	}
+
+	if (idx == -1) {
+		idx = binding_functions.size();
+		binding_functions.resize(idx + 1);
+	}
+
+	// set the functions
+	binding_functions[idx].first = true;
+	binding_functions[idx].second = p_binding_functions;
+
+	return idx;
+}
+
+void NativeScriptLanguage::unregister_binding_functions(int p_idx) {
+	ERR_FAIL_INDEX(p_idx, binding_functions.size());
+
+	for (Set<Vector<void *> *>::Element *E = binding_instances.front(); E; E = E->next()) {
+		Vector<void *> &binding_data = *E->get();
+
+		if (binding_data[p_idx] && binding_functions[p_idx].second.free_instance_binding_data)
+			binding_functions[p_idx].second.free_instance_binding_data(binding_functions[p_idx].second.data, binding_data[p_idx]);
+	}
+
+	binding_functions[p_idx].first = false;
+
+	if (binding_functions[p_idx].second.free_func)
+		binding_functions[p_idx].second.free_func(binding_functions[p_idx].second.data);
+}
+
+void *NativeScriptLanguage::get_instance_binding_data(int p_idx, Object *p_object) {
+	ERR_FAIL_INDEX_V(p_idx, binding_functions.size(), NULL);
+
+	if (!binding_functions[p_idx].first) {
+		ERR_EXPLAIN("Tried to get binding data for a nativescript binding that does not exist");
+		ERR_FAIL_V(NULL);
+	}
+
+	Vector<void *> *binding_data = (Vector<void *> *)p_object->get_script_instance_binding(lang_idx);
+
+	if (!binding_data)
+		return NULL; // should never happen.
+
+	if (binding_data->size() <= p_idx) {
+		// okay, add new elements here.
+		int old_size = binding_data->size();
+
+		binding_data->resize(p_idx + 1);
+
+		for (int i = old_size; i <= p_idx; i++) {
+			(*binding_data)[i] = NULL;
+		}
+	}
+
+	if (!(*binding_data)[p_idx]) {
+		// no binding data yet, soooooo alloc new one \o/
+		(*binding_data)[p_idx] = binding_functions[p_idx].second.alloc_instance_binding_data(binding_functions[p_idx].second.data, (godot_object *)p_object);
+	}
+
+	return (*binding_data)[p_idx];
+}
+
+void *NativeScriptLanguage::alloc_instance_binding_data(Object *p_object) {
+
+	Vector<void *> *binding_data = new Vector<void *>;
+
+	binding_data->resize(binding_functions.size());
+
+	for (int i = 0; i < binding_functions.size(); i++) {
+		(*binding_data)[i] = NULL;
+	}
+
+	binding_instances.insert(binding_data);
+
+	return (void *)binding_data;
+}
+
+void NativeScriptLanguage::free_instance_binding_data(void *p_data) {
+
+	if (!p_data)
+		return;
+
+	Vector<void *> &binding_data = *(Vector<void *> *)p_data;
+
+	for (int i = 0; i < binding_data.size(); i++) {
+		if (!binding_data[i])
+			continue;
+
+		if (binding_functions[i].first && binding_functions[i].second.free_instance_binding_data) {
+			binding_functions[i].second.free_instance_binding_data(binding_functions[i].second.data, binding_data[i]);
+		}
+	}
+
+	binding_instances.erase(&binding_data);
+
+	delete &binding_data;
+}
+
 #ifndef NO_THREADS
 void NativeScriptLanguage::defer_init_library(Ref<GDNativeLibrary> lib, NativeScript *script) {
 	MutexLock lock(mutex);
@@ -1051,6 +1299,11 @@ void NativeScriptLanguage::unregister_script(NativeScript *script) {
 void NativeScriptLanguage::call_libraries_cb(const StringName &name) {
 	// library_gdnatives is modified only from the main thread, so it's safe not to use mutex here
 	for (Map<String, Ref<GDNative> >::Element *L = library_gdnatives.front(); L; L = L->next()) {
+
+		if (L->get().is_null()) {
+			continue;
+		}
+
 		if (L->get()->is_initialized()) {
 
 			void *proc_ptr;
@@ -1108,10 +1361,20 @@ void NativeReloadNode::_notification(int p_what) {
 #ifndef NO_THREADS
 			MutexLock lock(NSL->mutex);
 #endif
-			NSL->_unload_stuff();
+			NSL->_unload_stuff(true);
 			for (Map<String, Ref<GDNative> >::Element *L = NSL->library_gdnatives.front(); L; L = L->next()) {
 
-				L->get()->terminate();
+				Ref<GDNative> gdn = L->get();
+
+				if (gdn.is_null()) {
+					continue;
+				}
+
+				if (!gdn->get_library()->is_reloadable()) {
+					continue;
+				}
+
+				gdn->terminate();
 				NSL->library_classes.erase(L->key());
 			}
 
@@ -1129,21 +1392,27 @@ void NativeReloadNode::_notification(int p_what) {
 			Set<StringName> libs_to_remove;
 			for (Map<String, Ref<GDNative> >::Element *L = NSL->library_gdnatives.front(); L; L = L->next()) {
 
-				if (!L->get()->initialize()) {
+				Ref<GDNative> gdn = L->get();
+
+				if (gdn.is_null()) {
+					continue;
+				}
+
+				if (!gdn->get_library()->is_reloadable()) {
+					continue;
+				}
+
+				if (!gdn->initialize()) {
 					libs_to_remove.insert(L->key());
 					continue;
 				}
 
 				NSL->library_classes.insert(L->key(), Map<StringName, NativeScriptDesc>());
 
-				void *args[1] = {
-					(void *)&L->key()
-				};
-
 				// here the library registers all the classes and stuff.
 
 				void *proc_ptr;
-				Error err = L->get()->get_symbol(L->get()->get_library()->get_symbol_prefix() + "nativescript_init", proc_ptr);
+				Error err = gdn->get_symbol(gdn->get_library()->get_symbol_prefix() + "nativescript_init", proc_ptr);
 				if (err != OK) {
 					ERR_PRINT(String("No godot_nativescript_init in \"" + L->key() + "\" found").utf8().get_data());
 				} else {