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229 lines
8.4 KiB
C++
229 lines
8.4 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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 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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Error gd_mono_connect_signal_awaiter(Object *p_source, const StringName &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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// TODO: Use pooling for ManagedCallable instances.
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SignalAwaiterCallable *awaiter_callable = memnew(SignalAwaiterCallable(p_target, p_awaiter, p_signal));
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Callable callable = Callable(awaiter_callable);
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return p_source->connect(p_signal, callable, Vector<Variant>(), Object::CONNECT_ONESHOT);
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}
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bool SignalAwaiterCallable::compare_equal(const CallableCustom *p_a, const CallableCustom *p_b) {
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// Only called if both instances are of type SignalAwaiterCallable. Static cast is safe.
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const SignalAwaiterCallable *a = static_cast<const SignalAwaiterCallable *>(p_a);
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const SignalAwaiterCallable *b = static_cast<const SignalAwaiterCallable *>(p_b);
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return a->awaiter_handle.handle == b->awaiter_handle.handle;
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}
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bool SignalAwaiterCallable::compare_less(const CallableCustom *p_a, const CallableCustom *p_b) {
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if (compare_equal(p_a, p_b)) {
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return false;
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}
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return p_a < p_b;
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}
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uint32_t SignalAwaiterCallable::hash() const {
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uint32_t hash = signal.hash();
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return hash_djb2_one_64(target_id, hash);
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}
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String SignalAwaiterCallable::get_as_text() const {
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Object *base = ObjectDB::get_instance(target_id);
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if (base) {
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String class_name = base->get_class();
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Ref<Script> script = base->get_script();
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if (script.is_valid() && script->get_path().is_resource_file()) {
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class_name += "(" + script->get_path().get_file() + ")";
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}
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return class_name + "::SignalAwaiterMiddleman::" + String(signal);
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} else {
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return "null::SignalAwaiterMiddleman::" + String(signal);
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}
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}
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CallableCustom::CompareEqualFunc SignalAwaiterCallable::get_compare_equal_func() const {
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return compare_equal_func_ptr;
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}
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CallableCustom::CompareLessFunc SignalAwaiterCallable::get_compare_less_func() const {
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return compare_less_func_ptr;
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}
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ObjectID SignalAwaiterCallable::get_object() const {
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return target_id;
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}
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void SignalAwaiterCallable::call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const {
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r_call_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD; // Can't find anything better
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r_return_value = Variant();
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#ifdef DEBUG_ENABLED
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ERR_FAIL_COND_MSG(target_id.is_valid() && !ObjectDB::get_instance(target_id),
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"Resumed after await, but class instance is gone.");
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#endif
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MonoArray *signal_args = nullptr;
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if (p_argcount > 0) {
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signal_args = mono_array_new(mono_domain_get(), CACHED_CLASS_RAW(MonoObject), p_argcount);
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for (int i = 0; i < p_argcount; i++) {
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MonoObject *boxed = GDMonoMarshal::variant_to_mono_object(*p_arguments[i]);
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mono_array_setref(signal_args, i, boxed);
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}
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}
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MonoObject *awaiter = awaiter_handle.get_target();
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if (!awaiter) {
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r_call_error.error = Callable::CallError::CALL_ERROR_INSTANCE_IS_NULL;
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return;
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}
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MonoException *exc = nullptr;
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CACHED_METHOD_THUNK(SignalAwaiter, SignalCallback).invoke(awaiter, signal_args, &exc);
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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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} else {
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r_call_error.error = Callable::CallError::CALL_OK;
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}
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}
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SignalAwaiterCallable::SignalAwaiterCallable(Object *p_target, MonoObject *p_awaiter, const StringName &p_signal) :
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target_id(p_target->get_instance_id()),
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awaiter_handle(MonoGCHandleData::new_strong_handle(p_awaiter)),
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signal(p_signal) {
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}
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SignalAwaiterCallable::~SignalAwaiterCallable() {
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awaiter_handle.release();
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}
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bool EventSignalCallable::compare_equal(const CallableCustom *p_a, const CallableCustom *p_b) {
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const EventSignalCallable *a = static_cast<const EventSignalCallable *>(p_a);
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const EventSignalCallable *b = static_cast<const EventSignalCallable *>(p_b);
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if (a->owner != b->owner) {
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return false;
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}
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if (a->event_signal != b->event_signal) {
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return false;
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}
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return true;
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}
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bool EventSignalCallable::compare_less(const CallableCustom *p_a, const CallableCustom *p_b) {
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if (compare_equal(p_a, p_b)) {
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return false;
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}
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return p_a < p_b;
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}
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uint32_t EventSignalCallable::hash() const {
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uint32_t hash = event_signal->field->get_name().hash();
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return hash_djb2_one_64(owner->get_instance_id(), hash);
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}
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String EventSignalCallable::get_as_text() const {
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String class_name = owner->get_class();
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Ref<Script> script = owner->get_script();
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if (script.is_valid() && script->get_path().is_resource_file()) {
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class_name += "(" + script->get_path().get_file() + ")";
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}
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StringName signal = event_signal->field->get_name();
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return class_name + "::EventSignalMiddleman::" + String(signal);
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}
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CallableCustom::CompareEqualFunc EventSignalCallable::get_compare_equal_func() const {
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return compare_equal_func_ptr;
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}
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CallableCustom::CompareLessFunc EventSignalCallable::get_compare_less_func() const {
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return compare_less_func_ptr;
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}
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ObjectID EventSignalCallable::get_object() const {
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return owner->get_instance_id();
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}
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StringName EventSignalCallable::get_signal() const {
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return event_signal->field->get_name();
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}
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void EventSignalCallable::call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const {
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r_call_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD; // Can't find anything better
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r_return_value = Variant();
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ERR_FAIL_COND(p_argcount < event_signal->invoke_method->get_parameters_count());
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CSharpInstance *csharp_instance = CAST_CSHARP_INSTANCE(owner->get_script_instance());
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ERR_FAIL_NULL(csharp_instance);
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MonoObject *owner_managed = csharp_instance->get_mono_object();
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ERR_FAIL_NULL(owner_managed);
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MonoObject *delegate_field_value = event_signal->field->get_value(owner_managed);
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if (!delegate_field_value) {
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r_call_error.error = Callable::CallError::CALL_OK;
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return;
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}
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MonoException *exc = nullptr;
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event_signal->invoke_method->invoke(delegate_field_value, p_arguments, &exc);
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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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} else {
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r_call_error.error = Callable::CallError::CALL_OK;
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}
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}
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EventSignalCallable::EventSignalCallable(Object *p_owner, const CSharpScript::EventSignal *p_event_signal) :
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owner(p_owner),
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event_signal(p_event_signal) {
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}
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