523 lines
14 KiB
C++
523 lines
14 KiB
C++
/**************************************************************************/
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/* callable.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 "callable.h"
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#include "callable_bind.h"
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#include "core/object/message_queue.h"
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#include "core/object/object.h"
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#include "core/object/ref_counted.h"
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#include "core/object/script_language.h"
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void Callable::call_deferredp(const Variant **p_arguments, int p_argcount) const {
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MessageQueue::get_singleton()->push_callablep(*this, p_arguments, p_argcount);
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}
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void Callable::callp(const Variant **p_arguments, int p_argcount, Variant &r_return_value, CallError &r_call_error) const {
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if (is_null()) {
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r_call_error.error = CallError::CALL_ERROR_INSTANCE_IS_NULL;
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r_call_error.argument = 0;
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r_call_error.expected = 0;
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r_return_value = Variant();
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} else if (is_custom()) {
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custom->call(p_arguments, p_argcount, r_return_value, r_call_error);
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} else {
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Object *obj = ObjectDB::get_instance(ObjectID(object));
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#ifdef DEBUG_ENABLED
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if (!obj) {
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r_call_error.error = CallError::CALL_ERROR_INSTANCE_IS_NULL;
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r_call_error.argument = 0;
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r_call_error.expected = 0;
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r_return_value = Variant();
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return;
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}
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#endif
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r_return_value = obj->callp(method, p_arguments, p_argcount, r_call_error);
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}
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}
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Variant Callable::callv(const Array &p_arguments) const {
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int argcount = p_arguments.size();
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const Variant **argptrs = nullptr;
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if (argcount) {
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argptrs = (const Variant **)alloca(sizeof(Variant *) * argcount);
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for (int i = 0; i < argcount; i++) {
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argptrs[i] = &p_arguments[i];
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}
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}
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CallError ce;
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Variant ret;
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callp(argptrs, argcount, ret, ce);
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return ret;
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}
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Error Callable::rpcp(int p_id, const Variant **p_arguments, int p_argcount, CallError &r_call_error) const {
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if (is_null()) {
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r_call_error.error = CallError::CALL_ERROR_INSTANCE_IS_NULL;
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r_call_error.argument = 0;
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r_call_error.expected = 0;
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return ERR_UNCONFIGURED;
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} else if (!is_custom()) {
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r_call_error.error = CallError::CALL_ERROR_INVALID_METHOD;
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r_call_error.argument = 0;
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r_call_error.expected = 0;
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return ERR_UNCONFIGURED;
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} else {
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return custom->rpc(p_id, p_arguments, p_argcount, r_call_error);
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}
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}
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Callable Callable::bindp(const Variant **p_arguments, int p_argcount) const {
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Vector<Variant> args;
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args.resize(p_argcount);
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for (int i = 0; i < p_argcount; i++) {
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args.write[i] = *p_arguments[i];
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}
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return Callable(memnew(CallableCustomBind(*this, args)));
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}
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Callable Callable::bindv(const Array &p_arguments) {
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if (p_arguments.is_empty()) {
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return *this; // No point in creating a new callable if nothing is bound.
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}
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Vector<Variant> args;
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args.resize(p_arguments.size());
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for (int i = 0; i < p_arguments.size(); i++) {
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args.write[i] = p_arguments[i];
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}
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return Callable(memnew(CallableCustomBind(*this, args)));
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}
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Callable Callable::unbind(int p_argcount) const {
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ERR_FAIL_COND_V_MSG(p_argcount <= 0, Callable(*this), "Amount of unbind() arguments must be 1 or greater.");
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return Callable(memnew(CallableCustomUnbind(*this, p_argcount)));
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}
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bool Callable::is_valid() const {
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if (is_custom()) {
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return get_custom()->is_valid();
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} else {
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return get_object() && get_object()->has_method(get_method());
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}
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}
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Object *Callable::get_object() const {
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if (is_null()) {
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return nullptr;
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} else if (is_custom()) {
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return ObjectDB::get_instance(custom->get_object());
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} else {
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return ObjectDB::get_instance(ObjectID(object));
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}
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}
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ObjectID Callable::get_object_id() const {
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if (is_null()) {
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return ObjectID();
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} else if (is_custom()) {
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return custom->get_object();
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} else {
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return ObjectID(object);
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}
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}
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StringName Callable::get_method() const {
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if (is_custom()) {
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return get_custom()->get_method();
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}
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return method;
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}
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int Callable::get_bound_arguments_count() const {
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if (!is_null() && is_custom()) {
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return custom->get_bound_arguments_count();
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} else {
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return 0;
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}
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}
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void Callable::get_bound_arguments_ref(Vector<Variant> &r_arguments, int &r_argcount) const {
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if (!is_null() && is_custom()) {
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custom->get_bound_arguments(r_arguments, r_argcount);
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} else {
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r_arguments.clear();
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r_argcount = 0;
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}
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}
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Array Callable::get_bound_arguments() const {
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Vector<Variant> arr;
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int ac;
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get_bound_arguments_ref(arr, ac);
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Array ret;
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ret.resize(arr.size());
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for (int i = 0; i < arr.size(); i++) {
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ret[i] = arr[i];
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}
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return ret;
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}
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CallableCustom *Callable::get_custom() const {
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ERR_FAIL_COND_V_MSG(!is_custom(), nullptr,
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vformat("Can't get custom on non-CallableCustom \"%s\".", operator String()));
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return custom;
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}
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const Callable *Callable::get_base_comparator() const {
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const Callable *comparator = nullptr;
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if (is_custom()) {
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comparator = custom->get_base_comparator();
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}
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if (comparator) {
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return comparator;
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} else {
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return this;
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}
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}
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uint32_t Callable::hash() const {
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if (is_custom()) {
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return custom->hash();
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} else {
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uint32_t hash = method.hash();
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hash = hash_murmur3_one_64(object, hash);
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return hash_fmix32(hash);
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}
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}
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bool Callable::operator==(const Callable &p_callable) const {
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bool custom_a = is_custom();
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bool custom_b = p_callable.is_custom();
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if (custom_a == custom_b) {
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if (custom_a) {
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if (custom == p_callable.custom) {
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return true; //same pointer, don't even compare
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}
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CallableCustom::CompareEqualFunc eq_a = custom->get_compare_equal_func();
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CallableCustom::CompareEqualFunc eq_b = p_callable.custom->get_compare_equal_func();
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if (eq_a == eq_b) {
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return eq_a(custom, p_callable.custom);
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} else {
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return false;
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}
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} else {
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return object == p_callable.object && method == p_callable.method;
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}
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} else {
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return false;
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}
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}
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bool Callable::operator!=(const Callable &p_callable) const {
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return !(*this == p_callable);
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}
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bool Callable::operator<(const Callable &p_callable) const {
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bool custom_a = is_custom();
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bool custom_b = p_callable.is_custom();
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if (custom_a == custom_b) {
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if (custom_a) {
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if (custom == p_callable.custom) {
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return false; //same pointer, don't even compare
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}
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CallableCustom::CompareLessFunc less_a = custom->get_compare_less_func();
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CallableCustom::CompareLessFunc less_b = p_callable.custom->get_compare_less_func();
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if (less_a == less_b) {
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return less_a(custom, p_callable.custom);
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} else {
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return less_a < less_b; //it's something..
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}
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} else {
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if (object == p_callable.object) {
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return method < p_callable.method;
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} else {
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return object < p_callable.object;
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}
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}
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} else {
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return int(custom_a ? 1 : 0) < int(custom_b ? 1 : 0);
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}
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}
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void Callable::operator=(const Callable &p_callable) {
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if (is_custom()) {
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if (p_callable.is_custom()) {
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if (custom == p_callable.custom) {
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return;
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}
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}
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if (custom->ref_count.unref()) {
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memdelete(custom);
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}
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}
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if (p_callable.is_custom()) {
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method = StringName();
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if (!p_callable.custom->ref_count.ref()) {
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object = 0;
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} else {
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object = 0;
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custom = p_callable.custom;
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}
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} else {
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method = p_callable.method;
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object = p_callable.object;
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}
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}
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Callable::operator String() const {
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if (is_custom()) {
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return custom->get_as_text();
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} else {
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if (is_null()) {
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return "null::null";
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}
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Object *base = get_object();
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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 + "::" + String(method);
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} else {
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return "null::" + String(method);
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}
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}
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}
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Callable::Callable(const Object *p_object, const StringName &p_method) {
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if (p_method == StringName()) {
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object = 0;
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ERR_FAIL_MSG("Method argument to Callable constructor must be a non-empty string");
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}
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if (p_object == nullptr) {
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object = 0;
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ERR_FAIL_MSG("Object argument to Callable constructor must be non-null");
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}
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object = p_object->get_instance_id();
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method = p_method;
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}
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Callable::Callable(ObjectID p_object, const StringName &p_method) {
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if (p_method == StringName()) {
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object = 0;
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ERR_FAIL_MSG("Method argument to Callable constructor must be a non-empty string");
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}
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object = p_object;
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method = p_method;
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}
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Callable::Callable(CallableCustom *p_custom) {
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if (p_custom->referenced) {
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object = 0;
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ERR_FAIL_MSG("Callable custom is already referenced");
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}
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p_custom->referenced = true;
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object = 0; //ensure object is all zero, since pointer may be 32 bits
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custom = p_custom;
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}
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Callable::Callable(const Callable &p_callable) {
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if (p_callable.is_custom()) {
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if (!p_callable.custom->ref_count.ref()) {
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object = 0;
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} else {
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object = 0;
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custom = p_callable.custom;
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}
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} else {
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method = p_callable.method;
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object = p_callable.object;
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}
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}
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Callable::~Callable() {
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if (is_custom()) {
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if (custom->ref_count.unref()) {
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memdelete(custom);
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}
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}
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}
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bool CallableCustom::is_valid() const {
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// Sensible default implementation so most custom callables don't need their own.
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return ObjectDB::get_instance(get_object());
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}
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StringName CallableCustom::get_method() const {
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ERR_FAIL_V_MSG(StringName(), vformat("Can't get method on CallableCustom \"%s\".", get_as_text()));
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}
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Error CallableCustom::rpc(int p_peer_id, const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error) const {
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r_call_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
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r_call_error.argument = 0;
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r_call_error.expected = 0;
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return ERR_UNCONFIGURED;
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}
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const Callable *CallableCustom::get_base_comparator() const {
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return nullptr;
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}
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int CallableCustom::get_bound_arguments_count() const {
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return 0;
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}
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void CallableCustom::get_bound_arguments(Vector<Variant> &r_arguments, int &r_argcount) const {
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r_arguments = Vector<Variant>();
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r_argcount = 0;
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}
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CallableCustom::CallableCustom() {
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ref_count.init();
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}
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//////////////////////////////////
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Object *Signal::get_object() const {
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return ObjectDB::get_instance(object);
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}
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ObjectID Signal::get_object_id() const {
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return object;
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}
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StringName Signal::get_name() const {
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return name;
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}
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bool Signal::operator==(const Signal &p_signal) const {
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return object == p_signal.object && name == p_signal.name;
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}
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bool Signal::operator!=(const Signal &p_signal) const {
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return object != p_signal.object || name != p_signal.name;
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}
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bool Signal::operator<(const Signal &p_signal) const {
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if (object == p_signal.object) {
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return name < p_signal.name;
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} else {
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return object < p_signal.object;
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}
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}
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Signal::operator String() const {
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Object *base = get_object();
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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 + "::[signal]" + String(name);
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} else {
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return "null::[signal]" + String(name);
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}
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}
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Error Signal::emit(const Variant **p_arguments, int p_argcount) const {
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Object *obj = ObjectDB::get_instance(object);
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if (!obj) {
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return ERR_INVALID_DATA;
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}
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return obj->emit_signalp(name, p_arguments, p_argcount);
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}
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Error Signal::connect(const Callable &p_callable, uint32_t p_flags) {
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Object *obj = get_object();
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ERR_FAIL_COND_V(!obj, ERR_UNCONFIGURED);
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return obj->connect(name, p_callable, p_flags);
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}
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void Signal::disconnect(const Callable &p_callable) {
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Object *obj = get_object();
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ERR_FAIL_COND(!obj);
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obj->disconnect(name, p_callable);
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}
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bool Signal::is_connected(const Callable &p_callable) const {
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Object *obj = get_object();
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ERR_FAIL_COND_V(!obj, false);
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return obj->is_connected(name, p_callable);
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}
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Array Signal::get_connections() const {
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Object *obj = get_object();
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if (!obj) {
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return Array();
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}
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List<Object::Connection> connections;
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obj->get_signal_connection_list(name, &connections);
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Array arr;
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for (const Object::Connection &E : connections) {
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arr.push_back(E);
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}
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return arr;
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}
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Signal::Signal(const Object *p_object, const StringName &p_name) {
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ERR_FAIL_COND_MSG(p_object == nullptr, "Object argument to Signal constructor must be non-null");
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object = p_object->get_instance_id();
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name = p_name;
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}
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Signal::Signal(ObjectID p_object, const StringName &p_name) {
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object = p_object;
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name = p_name;
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}
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bool CallableComparator::operator()(const Variant &p_l, const Variant &p_r) const {
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const Variant *args[2] = { &p_l, &p_r };
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Callable::CallError err;
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Variant res;
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func.callp(args, 2, res, err);
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ERR_FAIL_COND_V_MSG(err.error != Callable::CallError::CALL_OK, false,
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"Error calling compare method: " + Variant::get_callable_error_text(func, args, 2, err));
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return res;
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}
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