Cleanup of c# api files and bindings generator

- We no longer generate RID and NodePath C# classes. Both will be maintained manually.
- We no longer generate C# declarations and runtime registration of internal calls for the following classes: RID, NodePath, String, GD, SignalAwaiter and Godot.Object (partial base).
- We no longer auto-generate the base members of Godot.Object. They will be maintained manually as a partial class.

This makes it easier to maintain these C# classes and their internal calls, as well as the bindings generator which no longer generates C# classes that don't derive from Godot Object, and it no longer generates the Godot.Object base members (which where unreadable in the bindings generator code).

- Added missing 'RID(Object from)' constructor to the RID C# class.
- Replaced MONO_GLUE_DISABLED constant macro with MONO_GLUE_ENABLED.
- Add sources in module/mono/glue even if glue is disabled, but surround glue files with ifdef MONO_GLUE_ENABLED.

1 files changed, 96 insertions, 0 deletions

diff --git a/modules/mono/glue/base_object_glue.cpp b/modules/mono/glue/base_object_glue.cpp
new file mode 100644
index 0000000000..8ee2fae475
--- /dev/null
+++ b/modules/mono/glue/base_object_glue.cpp
@@ -0,0 +1,96 @@
+/*************************************************************************/
+/*  base_object_glue.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "base_object_glue.h"
+
+#ifdef MONO_GLUE_ENABLED
+
+#include "core/reference.h"
+#include "core/string_db.h"
+
+#include "../mono_gd/gd_mono_internals.h"
+#include "../mono_gd/gd_mono_utils.h"
+#include "../signal_awaiter_utils.h"
+
+Object *godot_icall_Object_Ctor(MonoObject *obj) {
+	Object *instance = memnew(Object);
+	GDMonoInternals::tie_managed_to_unmanaged(obj, instance);
+	return instance;
+}
+
+void godot_icall_Object_Dtor(MonoObject *obj, Object *ptr) {
+#ifdef DEBUG_ENABLED
+	CRASH_COND(ptr == NULL);
+#endif
+	_GodotSharp::get_singleton()->queue_dispose(obj, ptr);
+}
+
+MethodBind *godot_icall_Object_ClassDB_get_method(MonoString *p_type, MonoString *p_method) {
+	StringName type(GDMonoMarshal::mono_string_to_godot(p_type));
+	StringName method(GDMonoMarshal::mono_string_to_godot(p_method));
+	return ClassDB::get_method(type, method);
+}
+
+MonoObject *godot_icall_Object_weakref(Object *p_obj) {
+	if (!p_obj)
+		return NULL;
+
+	Ref<WeakRef> wref;
+	Reference *ref = Object::cast_to<Reference>(p_obj);
+
+	if (ref) {
+		REF r = ref;
+		if (!r.is_valid())
+			return NULL;
+
+		wref.instance();
+		wref->set_ref(r);
+	} else {
+		wref.instance();
+		wref->set_obj(p_obj);
+	}
+
+	return GDMonoUtils::create_managed_for_godot_object(CACHED_CLASS(WeakRef), Reference::get_class_static(), Object::cast_to<Object>(wref.ptr()));
+}
+
+Error godot_icall_SignalAwaiter_connect(Object *p_source, MonoString *p_signal, Object *p_target, MonoObject *p_awaiter) {
+	String signal = GDMonoMarshal::mono_string_to_godot(p_signal);
+	return SignalAwaiterUtils::connect_signal_awaiter(p_source, signal, p_target, p_awaiter);
+}
+
+void godot_register_object_icalls() {
+	mono_add_internal_call("Godot.Object::godot_icall_Object_Ctor", (void *)godot_icall_Object_Ctor);
+	mono_add_internal_call("Godot.Object::godot_icall_Object_Dtor", (void *)godot_icall_Object_Dtor);
+	mono_add_internal_call("Godot.Object::godot_icall_Object_ClassDB_get_method", (void *)godot_icall_Object_ClassDB_get_method);
+	mono_add_internal_call("Godot.Object::godot_icall_Object_weakref", (void *)godot_icall_Object_weakref);
+	mono_add_internal_call("Godot.SignalAwaiter::godot_icall_SignalAwaiter_connect", (void *)godot_icall_SignalAwaiter_connect);
+}
+
+#endif // MONO_GLUE_ENABLED