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/*************************************************************************/
/* signal_awaiter_utils.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 "signal_awaiter_utils.h"
#include "csharp_script.h"
#include "mono_gd/gd_mono_cache.h"
#include "mono_gd/gd_mono_class.h"
#include "mono_gd/gd_mono_marshal.h"
#include "mono_gd/gd_mono_utils.h"
namespace SignalAwaiterUtils {
Error connect_signal_awaiter(Object *p_source, const String &p_signal, Object *p_target, MonoObject *p_awaiter) {
ERR_FAIL_NULL_V(p_source, ERR_INVALID_DATA);
ERR_FAIL_NULL_V(p_target, ERR_INVALID_DATA);
Ref<SignalAwaiterHandle> sa_con = memnew(SignalAwaiterHandle(p_awaiter));
#ifdef DEBUG_ENABLED
sa_con->set_connection_target(p_target);
#endif
Vector<Variant> binds;
binds.push_back(sa_con);
Error err = p_source->connect(p_signal, sa_con.ptr(),
CSharpLanguage::get_singleton()->get_string_names()._signal_callback,
binds, Object::CONNECT_ONESHOT);
if (err != OK) {
// Set it as completed to prevent it from calling the failure callback when released.
// The awaiter will be aware of the failure by checking the returned error.
sa_con->set_completed(true);
}
return err;
}
} // namespace SignalAwaiterUtils
Variant SignalAwaiterHandle::_signal_callback(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
#ifdef DEBUG_ENABLED
ERR_FAIL_COND_V_MSG(conn_target_id && !ObjectDB::get_instance(conn_target_id), Variant(),
"Resumed after await, but class instance is gone.");
#endif
if (p_argcount < 1) {
r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = 1;
return Variant();
}
Ref<SignalAwaiterHandle> self = *p_args[p_argcount - 1];
if (self.is_null()) {
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = p_argcount - 1;
r_error.expected = Variant::OBJECT;
return Variant();
}
set_completed(true);
int signal_argc = p_argcount - 1;
MonoArray *signal_args = mono_array_new(mono_domain_get(), CACHED_CLASS_RAW(MonoObject), signal_argc);
for (int i = 0; i < signal_argc; i++) {
MonoObject *boxed = GDMonoMarshal::variant_to_mono_object(*p_args[i]);
mono_array_setref(signal_args, i, boxed);
}
MonoException *exc = NULL;
GD_MONO_BEGIN_RUNTIME_INVOKE;
CACHED_METHOD_THUNK(SignalAwaiter, SignalCallback).invoke(get_target(), signal_args, &exc);
GD_MONO_END_RUNTIME_INVOKE;
if (exc) {
GDMonoUtils::set_pending_exception(exc);
ERR_FAIL_V(Variant());
}
return Variant();
}
void SignalAwaiterHandle::_bind_methods() {
ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "_signal_callback", &SignalAwaiterHandle::_signal_callback, MethodInfo("_signal_callback"));
}
SignalAwaiterHandle::SignalAwaiterHandle(MonoObject *p_managed) :
MonoGCHandle(MonoGCHandle::new_strong_handle(p_managed), STRONG_HANDLE) {
#ifdef DEBUG_ENABLED
conn_target_id = 0;
#endif
}
SignalAwaiterHandle::~SignalAwaiterHandle() {
if (!completed) {
MonoObject *awaiter = get_target();
if (awaiter) {
MonoException *exc = NULL;
GD_MONO_BEGIN_RUNTIME_INVOKE;
CACHED_METHOD_THUNK(SignalAwaiter, FailureCallback).invoke(awaiter, &exc);
GD_MONO_END_RUNTIME_INVOKE;
if (exc) {
GDMonoUtils::set_pending_exception(exc);
ERR_FAIL();
}
}
}
}
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