Method tie_native_managed_to_unmanaged

modules/mono/csharp_script.cpp:1372–1415

	return p_object->has_instance_binding(get_singleton());
}
void CSharpLanguage::tie_native_managed_to_unmanaged(GCHandleIntPtr p_gchandle_intptr, Object *p_unmanaged, const StringName *p_native_name, bool p_ref_counted) {
	// This method should not fail

	CRASH_COND(!p_unmanaged);

	// All mono objects created from the managed world (e.g.: 'new Player()')
	// need to have a CSharpScript in order for their methods to be callable from the unmanaged side

	RefCounted *rc = Object::cast_to<RefCounted>(p_unmanaged);

	CRASH_COND(p_ref_counted != (bool)rc);

	MonoGCHandleData gchandle = MonoGCHandleData(p_gchandle_intptr,
			p_ref_counted ? gdmono::GCHandleType::WEAK_HANDLE : gdmono::GCHandleType::STRONG_HANDLE);

	// If it's just a wrapper Godot class and not a custom inheriting class, then attach a
	// script binding instead. One of the advantages of this is that if a script is attached
	// later and it's not a C# script, then the managed object won't have to be disposed.
	// Another reason for doing this is that this instance could outlive CSharpLanguage, which would
	// be problematic when using a script. See: https://github.com/godotengine/godot/issues/25621

	if (p_ref_counted) {
		// Unsafe refcount increment. The managed instance also counts as a reference.
		// This way if the unmanaged world has no references to our owner
		// but the managed instance is alive, the refcount will be 1 instead of 0.
		// See: godot_icall_RefCounted_Dtor(MonoObject *p_obj, Object *p_ptr)

		// May not me referenced yet, so we must use init_ref() instead of reference()
		if (rc->init_ref()) {
			CSharpLanguage::get_singleton()->post_unsafe_reference(rc);
		}
	}

	// The object was just created, no script instance binding should have been attached
	CRASH_COND(CSharpLanguage::has_instance_binding(p_unmanaged));

	void *binding = CSharpLanguage::get_singleton()->get_instance_binding(p_unmanaged);

	CSharpScriptBinding &script_binding = ((RBMap<Object *, CSharpScriptBinding>::Element *)binding)->value();
	script_binding.inited = true;
	script_binding.type_name = *p_native_name;
	script_binding.gchandle = gchandle;
	script_binding.owner = p_unmanaged;
}

void CSharpLanguage::tie_user_managed_to_unmanaged(GCHandleIntPtr p_gchandle_intptr, Object *p_unmanaged, Ref<CSharpScript> *p_script, bool p_ref_counted) {
	// This method should not fail