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144 lines
5.2 KiB
C++
144 lines
5.2 KiB
C++
/*************************************************************************/
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/* signal_awaiter_utils.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "signal_awaiter_utils.h"
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#include "csharp_script.h"
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#include "mono_gd/gd_mono_cache.h"
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#include "mono_gd/gd_mono_class.h"
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#include "mono_gd/gd_mono_marshal.h"
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#include "mono_gd/gd_mono_utils.h"
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namespace SignalAwaiterUtils {
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Error connect_signal_awaiter(Object *p_source, const String &p_signal, Object *p_target, MonoObject *p_awaiter) {
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ERR_FAIL_NULL_V(p_source, ERR_INVALID_DATA);
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ERR_FAIL_NULL_V(p_target, ERR_INVALID_DATA);
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Ref<SignalAwaiterHandle> sa_con = memnew(SignalAwaiterHandle(p_awaiter));
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#ifdef DEBUG_ENABLED
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sa_con->set_connection_target(p_target);
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#endif
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Vector<Variant> binds;
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binds.push_back(sa_con);
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Error err = p_source->connect(p_signal, sa_con.ptr(),
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CSharpLanguage::get_singleton()->get_string_names()._signal_callback,
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binds, Object::CONNECT_ONESHOT);
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if (err != OK) {
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// Set it as completed to prevent it from calling the failure callback when released.
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// The awaiter will be aware of the failure by checking the returned error.
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sa_con->set_completed(true);
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}
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return err;
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}
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} // namespace SignalAwaiterUtils
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Variant SignalAwaiterHandle::_signal_callback(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
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#ifdef DEBUG_ENABLED
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ERR_FAIL_COND_V_MSG(conn_target_id && !ObjectDB::get_instance(conn_target_id), Variant(),
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"Resumed after await, but class instance is gone.");
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#endif
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if (p_argcount < 1) {
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r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
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r_error.argument = 1;
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return Variant();
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}
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Ref<SignalAwaiterHandle> self = *p_args[p_argcount - 1];
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if (self.is_null()) {
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r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
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r_error.argument = p_argcount - 1;
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r_error.expected = Variant::OBJECT;
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return Variant();
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}
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set_completed(true);
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int signal_argc = p_argcount - 1;
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MonoArray *signal_args = mono_array_new(mono_domain_get(), CACHED_CLASS_RAW(MonoObject), signal_argc);
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for (int i = 0; i < signal_argc; i++) {
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MonoObject *boxed = GDMonoMarshal::variant_to_mono_object(*p_args[i]);
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mono_array_setref(signal_args, i, boxed);
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}
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MonoException *exc = NULL;
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GD_MONO_BEGIN_RUNTIME_INVOKE;
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CACHED_METHOD_THUNK(SignalAwaiter, SignalCallback).invoke(get_target(), signal_args, &exc);
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GD_MONO_END_RUNTIME_INVOKE;
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if (exc) {
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GDMonoUtils::set_pending_exception(exc);
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ERR_FAIL_V(Variant());
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}
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return Variant();
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}
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void SignalAwaiterHandle::_bind_methods() {
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ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "_signal_callback", &SignalAwaiterHandle::_signal_callback, MethodInfo("_signal_callback"));
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}
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SignalAwaiterHandle::SignalAwaiterHandle(MonoObject *p_managed) :
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MonoGCHandle(MonoGCHandle::new_strong_handle(p_managed), STRONG_HANDLE) {
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#ifdef DEBUG_ENABLED
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conn_target_id = 0;
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#endif
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}
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SignalAwaiterHandle::~SignalAwaiterHandle() {
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if (!completed) {
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MonoObject *awaiter = get_target();
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if (awaiter) {
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MonoException *exc = NULL;
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GD_MONO_BEGIN_RUNTIME_INVOKE;
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CACHED_METHOD_THUNK(SignalAwaiter, FailureCallback).invoke(awaiter, &exc);
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GD_MONO_END_RUNTIME_INVOKE;
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if (exc) {
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GDMonoUtils::set_pending_exception(exc);
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ERR_FAIL();
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}
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}
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}
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}
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