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class_db.cpp
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class_db.cpp
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/**************************************************************************/
/* class_db.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "class_db.h"
#include "core/config/engine.h"
#include "core/io/resource_loader.h"
#include "core/object/script_language.h"
#include "core/os/mutex.h"
#include "core/version.h"
#define OBJTYPE_RLOCK RWLockRead _rw_lockr_(lock);
#define OBJTYPE_WLOCK RWLockWrite _rw_lockw_(lock);
#ifdef DEBUG_METHODS_ENABLED
MethodDefinition D_METHODP(const char *p_name, const char *const **p_args, uint32_t p_argcount) {
MethodDefinition md;
md.name = StaticCString::create(p_name);
md.args.resize(p_argcount);
for (uint32_t i = 0; i < p_argcount; i++) {
md.args.write[i] = StaticCString::create(*p_args[i]);
}
return md;
}
#endif
ClassDB::APIType ClassDB::current_api = API_CORE;
HashMap<ClassDB::APIType, uint32_t> ClassDB::api_hashes_cache;
void ClassDB::set_current_api(APIType p_api) {
DEV_ASSERT(!api_hashes_cache.has(p_api)); // This API type may not be suitable for caching of hash if it can change later.
current_api = p_api;
}
ClassDB::APIType ClassDB::get_current_api() {
return current_api;
}
HashMap<StringName, ClassDB::ClassInfo> ClassDB::classes;
HashMap<StringName, StringName> ClassDB::resource_base_extensions;
HashMap<StringName, StringName> ClassDB::compat_classes;
#ifdef TOOLS_ENABLED
HashMap<StringName, ObjectGDExtension> ClassDB::placeholder_extensions;
class PlaceholderExtensionInstance {
StringName class_name;
HashMap<StringName, Variant> properties;
// Checks if a property is from a runtime class, and not a non-runtime base class.
bool is_runtime_property(const StringName &p_property_name) {
StringName current_class_name = class_name;
while (ClassDB::is_class_runtime(current_class_name)) {
if (ClassDB::has_property(current_class_name, p_property_name, true)) {
return true;
}
current_class_name = ClassDB::get_parent_class(current_class_name);
}
return false;
}
public:
PlaceholderExtensionInstance(const StringName &p_class_name) {
class_name = p_class_name;
}
~PlaceholderExtensionInstance() {}
void set(const StringName &p_name, const Variant &p_value, bool &r_valid) {
r_valid = is_runtime_property(p_name);
if (r_valid) {
properties[p_name] = p_value;
}
}
Variant get(const StringName &p_name, bool &r_valid) {
const Variant *value = properties.getptr(p_name);
Variant ret;
if (value) {
ret = *value;
r_valid = true;
} else {
r_valid = is_runtime_property(p_name);
if (r_valid) {
ret = ClassDB::class_get_default_property_value(class_name, p_name);
}
}
return ret;
}
static GDExtensionBool placeholder_instance_set(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionConstVariantPtr p_value) {
PlaceholderExtensionInstance *self = (PlaceholderExtensionInstance *)p_instance;
const StringName &name = *(StringName *)p_name;
const Variant &value = *(const Variant *)p_value;
bool valid = false;
self->set(name, value, valid);
return valid;
}
static GDExtensionBool placeholder_instance_get(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret) {
PlaceholderExtensionInstance *self = (PlaceholderExtensionInstance *)p_instance;
const StringName &name = *(StringName *)p_name;
Variant *value = (Variant *)r_ret;
bool valid = false;
*value = self->get(name, valid);
return valid;
}
static const GDExtensionPropertyInfo *placeholder_instance_get_property_list(GDExtensionClassInstancePtr p_instance, uint32_t *r_count) {
*r_count = 0;
return nullptr;
}
static void placeholder_instance_free_property_list(GDExtensionClassInstancePtr p_instance, const GDExtensionPropertyInfo *p_list, uint32_t p_count) {
}
static GDExtensionBool placeholder_instance_property_can_revert(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name) {
return false;
}
static GDExtensionBool placeholder_instance_property_get_revert(GDExtensionClassInstancePtr p_instance, GDExtensionConstStringNamePtr p_name, GDExtensionVariantPtr r_ret) {
return false;
}
static GDExtensionBool placeholder_instance_validate_property(GDExtensionClassInstancePtr p_instance, GDExtensionPropertyInfo *p_property) {
return false;
}
static void placeholder_instance_notification(GDExtensionClassInstancePtr p_instance, int32_t p_what, GDExtensionBool p_reversed) {
}
static void placeholder_instance_to_string(GDExtensionClassInstancePtr p_instance, GDExtensionBool *r_is_valid, GDExtensionStringPtr p_out) {
*r_is_valid = true;
}
static void placeholder_instance_reference(GDExtensionClassInstancePtr p_instance) {
}
static void placeholder_instance_unreference(GDExtensionClassInstancePtr p_instance) {
}
static uint64_t placeholder_instance_get_rid(GDExtensionClassInstancePtr p_instance) {
return 0;
}
static GDExtensionObjectPtr placeholder_class_create_instance(void *p_class_userdata, GDExtensionBool p_notify_postinitialize) {
ClassDB::ClassInfo *ti = (ClassDB::ClassInfo *)p_class_userdata;
// Find the closest native parent, that isn't a runtime class.
ClassDB::ClassInfo *native_parent = ti->inherits_ptr;
while (native_parent->gdextension || native_parent->is_runtime) {
native_parent = native_parent->inherits_ptr;
}
ERR_FAIL_NULL_V(native_parent->creation_func, nullptr);
// Construct a placeholder.
Object *obj = native_parent->creation_func(static_cast<bool>(p_notify_postinitialize));
// ClassDB::set_object_extension_instance() won't be called for placeholders.
// We need need to make sure that all the things it would have done (even if
// done in a different way to support placeholders) will also be done here.
obj->_extension = ClassDB::get_placeholder_extension(ti->name);
obj->_extension_instance = memnew(PlaceholderExtensionInstance(ti->name));
#ifdef TOOLS_ENABLED
if (obj->_extension->track_instance) {
obj->_extension->track_instance(obj->_extension->tracking_userdata, obj);
}
#endif
return obj;
}
static GDExtensionObjectPtr placeholder_class_recreate_instance(void *p_class_userdata, GDExtensionObjectPtr p_object) {
ClassDB::ClassInfo *ti = (ClassDB::ClassInfo *)p_class_userdata;
return memnew(PlaceholderExtensionInstance(ti->name));
}
static void placeholder_class_free_instance(void *p_class_userdata, GDExtensionClassInstancePtr p_instance) {
PlaceholderExtensionInstance *instance = (PlaceholderExtensionInstance *)p_instance;
memdelete(instance);
}
static GDExtensionClassCallVirtual placeholder_class_get_virtual(void *p_class_userdata, GDExtensionConstStringNamePtr p_name) {
return nullptr;
}
};
#endif
bool ClassDB::_is_parent_class(const StringName &p_class, const StringName &p_inherits) {
ClassInfo *c = classes.getptr(p_class);
while (c) {
if (c->name == p_inherits) {
return true;
}
c = c->inherits_ptr;
}
return false;
}
bool ClassDB::is_parent_class(const StringName &p_class, const StringName &p_inherits) {
OBJTYPE_RLOCK;
return _is_parent_class(p_class, p_inherits);
}
void ClassDB::get_class_list(List<StringName> *p_classes) {
OBJTYPE_RLOCK;
for (const KeyValue<StringName, ClassInfo> &E : classes) {
p_classes->push_back(E.key);
}
p_classes->sort_custom<StringName::AlphCompare>();
}
#ifdef TOOLS_ENABLED
void ClassDB::get_extensions_class_list(List<StringName> *p_classes) {
OBJTYPE_RLOCK;
for (const KeyValue<StringName, ClassInfo> &E : classes) {
if (E.value.api != API_EXTENSION && E.value.api != API_EDITOR_EXTENSION) {
continue;
}
p_classes->push_back(E.key);
}
p_classes->sort_custom<StringName::AlphCompare>();
}
void ClassDB::get_extension_class_list(const Ref<GDExtension> &p_extension, List<StringName> *p_classes) {
OBJTYPE_RLOCK;
for (const KeyValue<StringName, ClassInfo> &E : classes) {
if (E.value.api != API_EXTENSION && E.value.api != API_EDITOR_EXTENSION) {
continue;
}
if (!E.value.gdextension || E.value.gdextension->library != p_extension.ptr()) {
continue;
}
p_classes->push_back(E.key);
}
p_classes->sort_custom<StringName::AlphCompare>();
}
#endif
void ClassDB::get_inheriters_from_class(const StringName &p_class, List<StringName> *p_classes) {
OBJTYPE_RLOCK;
for (const KeyValue<StringName, ClassInfo> &E : classes) {
if (E.key != p_class && _is_parent_class(E.key, p_class)) {
p_classes->push_back(E.key);
}
}
}
void ClassDB::get_direct_inheriters_from_class(const StringName &p_class, List<StringName> *p_classes) {
OBJTYPE_RLOCK;
for (const KeyValue<StringName, ClassInfo> &E : classes) {
if (E.key != p_class && _get_parent_class(E.key) == p_class) {
p_classes->push_back(E.key);
}
}
}
StringName ClassDB::get_parent_class_nocheck(const StringName &p_class) {
OBJTYPE_RLOCK;
ClassInfo *ti = classes.getptr(p_class);
if (!ti) {
return StringName();
}
return ti->inherits;
}
bool ClassDB::get_inheritance_chain_nocheck(const StringName &p_class, Vector<StringName> &r_result) {
OBJTYPE_RLOCK;
ClassInfo *start = classes.getptr(p_class);
if (!start) {
return false;
}
int classes_to_add = 0;
for (ClassInfo *ti = start; ti; ti = ti->inherits_ptr) {
classes_to_add++;
}
int64_t old_size = r_result.size();
r_result.resize(old_size + classes_to_add);
StringName *w = r_result.ptrw() + old_size;
for (ClassInfo *ti = start; ti; ti = ti->inherits_ptr) {
*w++ = ti->name;
}
return true;
}
StringName ClassDB::get_compatibility_remapped_class(const StringName &p_class) {
if (classes.has(p_class)) {
return p_class;
}
if (compat_classes.has(p_class)) {
return compat_classes[p_class];
}
return p_class;
}
StringName ClassDB::_get_parent_class(const StringName &p_class) {
ClassInfo *ti = classes.getptr(p_class);
ERR_FAIL_NULL_V_MSG(ti, StringName(), "Cannot get class '" + String(p_class) + "'.");
return ti->inherits;
}
StringName ClassDB::get_parent_class(const StringName &p_class) {
OBJTYPE_RLOCK;
return _get_parent_class(p_class);
}
ClassDB::APIType ClassDB::get_api_type(const StringName &p_class) {
OBJTYPE_RLOCK;
ClassInfo *ti = classes.getptr(p_class);
ERR_FAIL_NULL_V_MSG(ti, API_NONE, "Cannot get class '" + String(p_class) + "'.");
return ti->api;
}
uint32_t ClassDB::get_api_hash(APIType p_api) {
#ifdef DEBUG_METHODS_ENABLED
OBJTYPE_WLOCK;
if (api_hashes_cache.has(p_api)) {
return api_hashes_cache[p_api];
}
uint64_t hash = hash_murmur3_one_64(HashMapHasherDefault::hash(VERSION_FULL_CONFIG));
List<StringName> class_list;
for (const KeyValue<StringName, ClassInfo> &E : classes) {
class_list.push_back(E.key);
}
// Must be alphabetically sorted for hash to compute.
class_list.sort_custom<StringName::AlphCompare>();
for (const StringName &E : class_list) {
ClassInfo *t = classes.getptr(E);
ERR_FAIL_NULL_V_MSG(t, 0, "Cannot get class '" + String(E) + "'.");
if (t->api != p_api || !t->exposed) {
continue;
}
hash = hash_murmur3_one_64(t->name.hash(), hash);
hash = hash_murmur3_one_64(t->inherits.hash(), hash);
{ //methods
List<StringName> snames;
for (const KeyValue<StringName, MethodBind *> &F : t->method_map) {
String name = F.key.operator String();
ERR_CONTINUE(name.is_empty());
if (name[0] == '_') {
continue; // Ignore non-virtual methods that start with an underscore
}
snames.push_back(F.key);
}
snames.sort_custom<StringName::AlphCompare>();
for (const StringName &F : snames) {
MethodBind *mb = t->method_map[F];
hash = hash_murmur3_one_64(mb->get_name().hash(), hash);
hash = hash_murmur3_one_64(mb->get_argument_count(), hash);
hash = hash_murmur3_one_64(mb->get_argument_type(-1), hash); //return
for (int i = 0; i < mb->get_argument_count(); i++) {
const PropertyInfo info = mb->get_argument_info(i);
hash = hash_murmur3_one_64(info.type, hash);
hash = hash_murmur3_one_64(info.name.hash(), hash);
hash = hash_murmur3_one_64(info.hint, hash);
hash = hash_murmur3_one_64(info.hint_string.hash(), hash);
}
hash = hash_murmur3_one_64(mb->get_default_argument_count(), hash);
for (int i = 0; i < mb->get_argument_count(); i++) {
if (mb->has_default_argument(i)) {
Variant da = mb->get_default_argument(i);
hash = hash_murmur3_one_64(da.hash(), hash);
}
}
hash = hash_murmur3_one_64(mb->get_hint_flags(), hash);
}
}
{ //constants
List<StringName> snames;
for (const KeyValue<StringName, int64_t> &F : t->constant_map) {
snames.push_back(F.key);
}
snames.sort_custom<StringName::AlphCompare>();
for (const StringName &F : snames) {
hash = hash_murmur3_one_64(F.hash(), hash);
hash = hash_murmur3_one_64(t->constant_map[F], hash);
}
}
{ //signals
List<StringName> snames;
for (const KeyValue<StringName, MethodInfo> &F : t->signal_map) {
snames.push_back(F.key);
}
snames.sort_custom<StringName::AlphCompare>();
for (const StringName &F : snames) {
MethodInfo &mi = t->signal_map[F];
hash = hash_murmur3_one_64(F.hash(), hash);
for (const PropertyInfo &pi : mi.arguments) {
hash = hash_murmur3_one_64(pi.type, hash);
}
}
}
{ //properties
List<StringName> snames;
for (const KeyValue<StringName, PropertySetGet> &F : t->property_setget) {
snames.push_back(F.key);
}
snames.sort_custom<StringName::AlphCompare>();
for (const StringName &F : snames) {
PropertySetGet *psg = t->property_setget.getptr(F);
ERR_FAIL_NULL_V(psg, 0);
hash = hash_murmur3_one_64(F.hash(), hash);
hash = hash_murmur3_one_64(psg->setter.hash(), hash);
hash = hash_murmur3_one_64(psg->getter.hash(), hash);
}
}
//property list
for (const PropertyInfo &F : t->property_list) {
hash = hash_murmur3_one_64(F.name.hash(), hash);
hash = hash_murmur3_one_64(F.type, hash);
hash = hash_murmur3_one_64(F.hint, hash);
hash = hash_murmur3_one_64(F.hint_string.hash(), hash);
hash = hash_murmur3_one_64(F.usage, hash);
}
}
hash = hash_fmix32(hash);
// Extension API changes at runtime; let's just not cache them by now.
if (p_api != API_EXTENSION && p_api != API_EDITOR_EXTENSION) {
api_hashes_cache[p_api] = hash;
}
return hash;
#else
return 0;
#endif
}
bool ClassDB::class_exists(const StringName &p_class) {
OBJTYPE_RLOCK;
return classes.has(p_class);
}
void ClassDB::add_compatibility_class(const StringName &p_class, const StringName &p_fallback) {
OBJTYPE_WLOCK;
compat_classes[p_class] = p_fallback;
}
StringName ClassDB::get_compatibility_class(const StringName &p_class) {
if (compat_classes.has(p_class)) {
return compat_classes[p_class];
}
return StringName();
}
Object *ClassDB::_instantiate_internal(const StringName &p_class, bool p_require_real_class, bool p_notify_postinitialize) {
ClassInfo *ti;
{
OBJTYPE_RLOCK;
ti = classes.getptr(p_class);
if (!_can_instantiate(ti)) {
if (compat_classes.has(p_class)) {
ti = classes.getptr(compat_classes[p_class]);
}
}
ERR_FAIL_NULL_V_MSG(ti, nullptr, "Cannot get class '" + String(p_class) + "'.");
ERR_FAIL_COND_V_MSG(ti->disabled, nullptr, "Class '" + String(p_class) + "' is disabled.");
ERR_FAIL_NULL_V_MSG(ti->creation_func, nullptr, "Class '" + String(p_class) + "' or its base class cannot be instantiated.");
}
#ifdef TOOLS_ENABLED
if ((ti->api == API_EDITOR || ti->api == API_EDITOR_EXTENSION) && !Engine::get_singleton()->is_editor_hint()) {
ERR_PRINT("Class '" + String(p_class) + "' can only be instantiated by editor.");
return nullptr;
}
#endif
#ifdef TOOLS_ENABLED
// Try to create placeholder.
if (!p_require_real_class && ti->is_runtime && Engine::get_singleton()->is_editor_hint()) {
bool can_create_placeholder = false;
if (ti->gdextension) {
if (ti->gdextension->create_instance2) {
can_create_placeholder = true;
}
#ifndef DISABLE_DEPRECATED
else if (ti->gdextension->create_instance) {
can_create_placeholder = true;
}
#endif // DISABLE_DEPRECATED
} else if (!ti->inherits_ptr || !ti->inherits_ptr->creation_func) {
ERR_PRINT(vformat("Cannot make a placeholder instance of runtime class %s because its parent cannot be constructed.", ti->name));
} else {
can_create_placeholder = true;
}
if (can_create_placeholder) {
ObjectGDExtension *extension = get_placeholder_extension(ti->name);
return (Object *)extension->create_instance2(extension->class_userdata, p_notify_postinitialize);
}
}
#endif // TOOLS_ENABLED
if (ti->gdextension && ti->gdextension->create_instance2) {
ObjectGDExtension *extension = ti->gdextension;
return (Object *)extension->create_instance2(extension->class_userdata, p_notify_postinitialize);
}
#ifndef DISABLE_DEPRECATED
else if (ti->gdextension && ti->gdextension->create_instance) {
ObjectGDExtension *extension = ti->gdextension;
return (Object *)extension->create_instance(extension->class_userdata);
}
#endif // DISABLE_DEPRECATED
else {
return ti->creation_func(p_notify_postinitialize);
}
}
bool ClassDB::_can_instantiate(ClassInfo *p_class_info) {
if (!p_class_info) {
return false;
}
if (p_class_info->disabled || !p_class_info->creation_func) {
return false;
}
if (!p_class_info->gdextension) {
return true;
}
if (p_class_info->gdextension->create_instance2) {
return true;
}
#ifndef DISABLE_DEPRECATED
if (p_class_info->gdextension->create_instance) {
return true;
}
#endif // DISABLE_DEPRECATED
return false;
}
Object *ClassDB::instantiate(const StringName &p_class) {
return _instantiate_internal(p_class);
}
Object *ClassDB::instantiate_no_placeholders(const StringName &p_class) {
return _instantiate_internal(p_class, true);
}
Object *ClassDB::instantiate_without_postinitialization(const StringName &p_class) {
return _instantiate_internal(p_class, true, false);
}
#ifdef TOOLS_ENABLED
ObjectGDExtension *ClassDB::get_placeholder_extension(const StringName &p_class) {
ObjectGDExtension *placeholder_extension = placeholder_extensions.getptr(p_class);
if (placeholder_extension) {
return placeholder_extension;
}
ClassInfo *ti;
{
OBJTYPE_RLOCK;
ti = classes.getptr(p_class);
if (!_can_instantiate(ti)) {
if (compat_classes.has(p_class)) {
ti = classes.getptr(compat_classes[p_class]);
}
}
ERR_FAIL_NULL_V_MSG(ti, nullptr, "Cannot get class '" + String(p_class) + "'.");
ERR_FAIL_COND_V_MSG(ti->disabled, nullptr, "Class '" + String(p_class) + "' is disabled.");
}
// Make a "fake" extension to act as a placeholder.
placeholder_extensions[p_class] = ObjectGDExtension();
placeholder_extension = placeholder_extensions.getptr(p_class);
placeholder_extension->is_runtime = true;
placeholder_extension->is_placeholder = true;
if (ti->gdextension) {
placeholder_extension->library = ti->gdextension->library;
placeholder_extension->parent = ti->gdextension->parent;
placeholder_extension->children = ti->gdextension->children;
placeholder_extension->parent_class_name = ti->gdextension->parent_class_name;
placeholder_extension->class_name = ti->gdextension->class_name;
placeholder_extension->editor_class = ti->gdextension->editor_class;
placeholder_extension->reloadable = ti->gdextension->reloadable;
placeholder_extension->is_virtual = ti->gdextension->is_virtual;
placeholder_extension->is_abstract = ti->gdextension->is_abstract;
placeholder_extension->is_exposed = ti->gdextension->is_exposed;
placeholder_extension->tracking_userdata = ti->gdextension->tracking_userdata;
placeholder_extension->track_instance = ti->gdextension->track_instance;
placeholder_extension->untrack_instance = ti->gdextension->untrack_instance;
} else {
placeholder_extension->library = nullptr;
placeholder_extension->parent = nullptr;
placeholder_extension->parent_class_name = ti->inherits;
placeholder_extension->class_name = ti->name;
placeholder_extension->editor_class = ti->api == API_EDITOR;
placeholder_extension->reloadable = false;
placeholder_extension->is_virtual = ti->is_virtual;
placeholder_extension->is_abstract = false;
placeholder_extension->is_exposed = ti->exposed;
}
placeholder_extension->set = &PlaceholderExtensionInstance::placeholder_instance_set;
placeholder_extension->get = &PlaceholderExtensionInstance::placeholder_instance_get;
placeholder_extension->get_property_list = &PlaceholderExtensionInstance::placeholder_instance_get_property_list;
placeholder_extension->free_property_list2 = &PlaceholderExtensionInstance::placeholder_instance_free_property_list;
placeholder_extension->property_can_revert = &PlaceholderExtensionInstance::placeholder_instance_property_can_revert;
placeholder_extension->property_get_revert = &PlaceholderExtensionInstance::placeholder_instance_property_get_revert;
placeholder_extension->validate_property = &PlaceholderExtensionInstance::placeholder_instance_validate_property;
#ifndef DISABLE_DEPRECATED
placeholder_extension->notification = nullptr;
placeholder_extension->free_property_list = nullptr;
#endif // DISABLE_DEPRECATED
placeholder_extension->notification2 = &PlaceholderExtensionInstance::placeholder_instance_notification;
placeholder_extension->to_string = &PlaceholderExtensionInstance::placeholder_instance_to_string;
placeholder_extension->reference = &PlaceholderExtensionInstance::placeholder_instance_reference;
placeholder_extension->unreference = &PlaceholderExtensionInstance::placeholder_instance_unreference;
placeholder_extension->get_rid = &PlaceholderExtensionInstance::placeholder_instance_get_rid;
placeholder_extension->class_userdata = ti;
#ifndef DISABLE_DEPRECATED
placeholder_extension->create_instance = nullptr;
#endif // DISABLE_DEPRECATED
placeholder_extension->create_instance2 = &PlaceholderExtensionInstance::placeholder_class_create_instance;
placeholder_extension->free_instance = &PlaceholderExtensionInstance::placeholder_class_free_instance;
placeholder_extension->get_virtual = &PlaceholderExtensionInstance::placeholder_class_get_virtual;
placeholder_extension->get_virtual_call_data = nullptr;
placeholder_extension->call_virtual_with_data = nullptr;
placeholder_extension->recreate_instance = &PlaceholderExtensionInstance::placeholder_class_recreate_instance;
return placeholder_extension;
}
#endif
void ClassDB::set_object_extension_instance(Object *p_object, const StringName &p_class, GDExtensionClassInstancePtr p_instance) {
ERR_FAIL_NULL(p_object);
ClassInfo *ti;
{
OBJTYPE_RLOCK;
ti = classes.getptr(p_class);
if (!_can_instantiate(ti)) {
if (compat_classes.has(p_class)) {
ti = classes.getptr(compat_classes[p_class]);
}
}
ERR_FAIL_NULL_MSG(ti, "Cannot get class '" + String(p_class) + "'.");
ERR_FAIL_COND_MSG(ti->disabled, "Class '" + String(p_class) + "' is disabled.");
ERR_FAIL_NULL_MSG(ti->gdextension, "Class '" + String(p_class) + "' has no native extension.");
}
p_object->_extension = ti->gdextension;
p_object->_extension_instance = p_instance;
#ifdef TOOLS_ENABLED
if (p_object->_extension->track_instance) {
p_object->_extension->track_instance(p_object->_extension->tracking_userdata, p_object);
}
#endif
}
bool ClassDB::can_instantiate(const StringName &p_class) {
OBJTYPE_RLOCK;
ClassInfo *ti = classes.getptr(p_class);
if (!ti) {
if (!ScriptServer::is_global_class(p_class)) {
ERR_FAIL_V_MSG(false, "Cannot get class '" + String(p_class) + "'.");
}
String path = ScriptServer::get_global_class_path(p_class);
Ref<Script> scr = ResourceLoader::load(path);
return scr.is_valid() && scr->is_valid() && !scr->is_abstract();
}
#ifdef TOOLS_ENABLED
if ((ti->api == API_EDITOR || ti->api == API_EDITOR_EXTENSION) && !Engine::get_singleton()->is_editor_hint()) {
return false;
}
#endif
return _can_instantiate(ti);
}
bool ClassDB::is_abstract(const StringName &p_class) {
OBJTYPE_RLOCK;
ClassInfo *ti = classes.getptr(p_class);
if (!ti) {
if (!ScriptServer::is_global_class(p_class)) {
ERR_FAIL_V_MSG(false, "Cannot get class '" + String(p_class) + "'.");
}
String path = ScriptServer::get_global_class_path(p_class);
Ref<Script> scr = ResourceLoader::load(path);
return scr.is_valid() && scr->is_valid() && scr->is_abstract();
}
if (ti->creation_func != nullptr) {
return false;
}
if (!ti->gdextension) {
return true;
}
#ifndef DISABLE_DEPRECATED
return ti->gdextension->create_instance2 == nullptr && ti->gdextension->create_instance == nullptr;
#else
return ti->gdextension->create_instance2 == nullptr;
#endif // DISABLE_DEPRECATED
}
bool ClassDB::is_virtual(const StringName &p_class) {
OBJTYPE_RLOCK;
ClassInfo *ti = classes.getptr(p_class);
if (!ti) {
if (!ScriptServer::is_global_class(p_class)) {
ERR_FAIL_V_MSG(false, "Cannot get class '" + String(p_class) + "'.");
}
String path = ScriptServer::get_global_class_path(p_class);
Ref<Script> scr = ResourceLoader::load(path);
return scr.is_valid() && scr->is_valid() && scr->is_abstract();
}
#ifdef TOOLS_ENABLED
if ((ti->api == API_EDITOR || ti->api == API_EDITOR_EXTENSION) && !Engine::get_singleton()->is_editor_hint()) {
return false;
}
#endif
return (_can_instantiate(ti) && ti->is_virtual);
}
void ClassDB::_add_class2(const StringName &p_class, const StringName &p_inherits) {
OBJTYPE_WLOCK;
const StringName &name = p_class;
ERR_FAIL_COND_MSG(classes.has(name), "Class '" + String(p_class) + "' already exists.");
classes[name] = ClassInfo();
ClassInfo &ti = classes[name];
ti.name = name;
ti.inherits = p_inherits;
ti.api = current_api;
if (ti.inherits) {
ERR_FAIL_COND(!classes.has(ti.inherits)); //it MUST be registered.
ti.inherits_ptr = &classes[ti.inherits];
} else {
ti.inherits_ptr = nullptr;
}
}
static MethodInfo info_from_bind(MethodBind *p_method) {
MethodInfo minfo;
minfo.name = p_method->get_name();
minfo.id = p_method->get_method_id();
for (int i = 0; i < p_method->get_argument_count(); i++) {
minfo.arguments.push_back(p_method->get_argument_info(i));
}
minfo.return_val = p_method->get_return_info();
minfo.flags = p_method->get_hint_flags();
for (int i = 0; i < p_method->get_argument_count(); i++) {
if (p_method->has_default_argument(i)) {
minfo.default_arguments.push_back(p_method->get_default_argument(i));
}
}
return minfo;
}
void ClassDB::get_method_list(const StringName &p_class, List<MethodInfo> *p_methods, bool p_no_inheritance, bool p_exclude_from_properties) {
OBJTYPE_RLOCK;
ClassInfo *type = classes.getptr(p_class);
while (type) {
if (type->disabled) {
if (p_no_inheritance) {
break;
}
type = type->inherits_ptr;
continue;
}
#ifdef DEBUG_METHODS_ENABLED
for (const MethodInfo &E : type->virtual_methods) {
p_methods->push_back(E);
}
for (const StringName &E : type->method_order) {
if (p_exclude_from_properties && type->methods_in_properties.has(E)) {
continue;
}
MethodBind *method = type->method_map.get(E);
MethodInfo minfo = info_from_bind(method);
p_methods->push_back(minfo);
}
#else
for (KeyValue<StringName, MethodBind *> &E : type->method_map) {
MethodBind *m = E.value;
MethodInfo minfo = info_from_bind(m);
p_methods->push_back(minfo);
}
#endif
if (p_no_inheritance) {
break;
}
type = type->inherits_ptr;
}
}
void ClassDB::get_method_list_with_compatibility(const StringName &p_class, List<Pair<MethodInfo, uint32_t>> *p_methods, bool p_no_inheritance, bool p_exclude_from_properties) {
OBJTYPE_RLOCK;
ClassInfo *type = classes.getptr(p_class);
while (type) {
if (type->disabled) {
if (p_no_inheritance) {
break;
}
type = type->inherits_ptr;
continue;
}
#ifdef DEBUG_METHODS_ENABLED
for (const MethodInfo &E : type->virtual_methods) {
Pair<MethodInfo, uint32_t> pair(E, 0);
p_methods->push_back(pair);
}
for (const StringName &E : type->method_order) {
if (p_exclude_from_properties && type->methods_in_properties.has(E)) {
continue;
}
MethodBind *method = type->method_map.get(E);
MethodInfo minfo = info_from_bind(method);
Pair<MethodInfo, uint32_t> pair(minfo, method->get_hash());
p_methods->push_back(pair);
}
#else
for (KeyValue<StringName, MethodBind *> &E : type->method_map) {
MethodBind *method = E.value;
MethodInfo minfo = info_from_bind(method);
Pair<MethodInfo, uint32_t> pair(minfo, method->get_hash());
p_methods->push_back(pair);
}
#endif
for (const KeyValue<StringName, LocalVector<MethodBind *, unsigned int, false, false>> &E : type->method_map_compatibility) {
LocalVector<MethodBind *> compat = E.value;
for (MethodBind *method : compat) {
MethodInfo minfo = info_from_bind(method);
Pair<MethodInfo, uint32_t> pair(minfo, method->get_hash());
p_methods->push_back(pair);
}
}
if (p_no_inheritance) {
break;
}
type = type->inherits_ptr;
}
}
bool ClassDB::get_method_info(const StringName &p_class, const StringName &p_method, MethodInfo *r_info, bool p_no_inheritance, bool p_exclude_from_properties) {
OBJTYPE_RLOCK;
ClassInfo *type = classes.getptr(p_class);
while (type) {
if (type->disabled) {
if (p_no_inheritance) {
break;
}
type = type->inherits_ptr;
continue;
}
#ifdef DEBUG_METHODS_ENABLED
MethodBind **method = type->method_map.getptr(p_method);
if (method && *method) {
if (r_info != nullptr) {
MethodInfo minfo = info_from_bind(*method);
*r_info = minfo;
}
return true;
} else if (type->virtual_methods_map.has(p_method)) {
if (r_info) {
*r_info = type->virtual_methods_map[p_method];
}
return true;
}
#else
if (type->method_map.has(p_method)) {
if (r_info) {
MethodBind *m = type->method_map[p_method];
MethodInfo minfo = info_from_bind(m);