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virtualx-engine/core/object/class_db.h
reduz 32b43cfeb3 Implement Resource UIDs 
* Most resource types now have unique identifiers.
* Applies to text, binary and imported resources.
* File formats reference both by text and UID (when available). UID always has priority.
* Resource UIDs are 64 bits for better compatibility with the engine.
* Can be represented and used textually, example `uuid://dapwmgsmnl28u`.
* A special binary cache file is used and exported, containing the mappings.

Example of how it looks:

```GDScript
[gd_scene load_steps=2 format=3 uid="uid://dw86wq31afig2"]

[ext_resource type="PackedScene" uid="uid://bt36ojelx8q6c" path="res://subscene.scn" id="1_t56hs"]
```

GDScript, shaders and other special resource files can't currently provide UIDs, but this should be doable with special keywords on the files.
This will be reserved for future PRs.
2021-07-24 09:16:52 -03:00

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/*************************************************************************/
/* class_db.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef CLASS_DB_H
#define CLASS_DB_H
#include "core/object/method_bind.h"
#include "core/object/object.h"
#include "core/string/print_string.h"
/** To bind more then 6 parameters include this:
*
*/
// Makes callable_mp readily available in all classes connecting signals.
// Needs to come after method_bind and object have been included.
#include "core/object/callable_method_pointer.h"
#define DEFVAL(m_defval) (m_defval)
#ifdef DEBUG_METHODS_ENABLED
struct MethodDefinition {
StringName name;
Vector<StringName> args;
MethodDefinition() {}
MethodDefinition(const char *p_name) :
name(p_name) {}
MethodDefinition(const StringName &p_name) :
name(p_name) {}
};
MethodDefinition D_METHOD(const char *p_name);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7, const char *p_arg8);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7, const char *p_arg8, const char *p_arg9);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7, const char *p_arg8, const char *p_arg9, const char *p_arg10);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7, const char *p_arg8, const char *p_arg9, const char *p_arg10, const char *p_arg11);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7, const char *p_arg8, const char *p_arg9, const char *p_arg10, const char *p_arg11, const char *p_arg12);
MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4, const char *p_arg5, const char *p_arg6, const char *p_arg7, const char *p_arg8, const char *p_arg9, const char *p_arg10, const char *p_arg11, const char *p_arg12, const char *p_arg13);
#else
//#define NO_VARIADIC_MACROS
#ifdef NO_VARIADIC_MACROS
static _FORCE_INLINE_ const char *D_METHOD(const char *m_name, ...) {
return m_name;
}
#else
// When DEBUG_METHODS_ENABLED is set this will let the engine know
// the argument names for easier debugging.
#define D_METHOD(m_c, ...) m_c
#endif
#endif
class ClassDB {
public:
enum APIType {
API_CORE,
API_EDITOR,
API_EXTENSION,
API_EDITOR_EXTENSION,
API_NONE
};
public:
struct PropertySetGet {
int index;
StringName setter;
StringName getter;
MethodBind *_setptr;
MethodBind *_getptr;
Variant::Type type;
};
struct ClassInfo {
APIType api = API_NONE;
ClassInfo *inherits_ptr = nullptr;
void *class_ptr = nullptr;
ObjectNativeExtension *native_extension = nullptr;
HashMap<StringName, MethodBind *> method_map;
HashMap<StringName, int> constant_map;
HashMap<StringName, List<StringName>> enum_map;
HashMap<StringName, MethodInfo> signal_map;
List<PropertyInfo> property_list;
HashMap<StringName, PropertyInfo> property_map;
#ifdef DEBUG_METHODS_ENABLED
List<StringName> constant_order;
List<StringName> method_order;
Set<StringName> methods_in_properties;
List<MethodInfo> virtual_methods;
Map<StringName, MethodInfo> virtual_methods_map;
StringName category;
#endif
HashMap<StringName, PropertySetGet> property_setget;
StringName inherits;
StringName name;
bool disabled = false;
bool exposed = false;
Object *(*creation_func)() = nullptr;
ClassInfo() {}
~ClassInfo() {}
};
template <class T>
static Object *creator() {
return memnew(T);
}
static RWLock lock;
static HashMap<StringName, ClassInfo> classes;
static HashMap<StringName, StringName> resource_base_extensions;
static HashMap<StringName, StringName> compat_classes;
#ifdef DEBUG_METHODS_ENABLED
static MethodBind *bind_methodfi(uint32_t p_flags, MethodBind *p_bind, const MethodDefinition &method_name, const Variant **p_defs, int p_defcount);
#else
static MethodBind *bind_methodfi(uint32_t p_flags, MethodBind *p_bind, const char *method_name, const Variant **p_defs, int p_defcount);
#endif
static APIType current_api;
static void _add_class2(const StringName &p_class, const StringName &p_inherits);
static HashMap<StringName, HashMap<StringName, Variant>> default_values;
static Set<StringName> default_values_cached;
private:
// Non-locking variants of get_parent_class and is_parent_class.
static StringName _get_parent_class(const StringName &p_class);
static bool _is_parent_class(const StringName &p_class, const StringName &p_inherits);
public:
// DO NOT USE THIS!!!!!! NEEDS TO BE PUBLIC BUT DO NOT USE NO MATTER WHAT!!!
template <class T>
static void _add_class() {
_add_class2(T::get_class_static(), T::get_parent_class_static());
}
template <class T>
static void register_class() {
GLOBAL_LOCK_FUNCTION;
T::initialize_class();
ClassInfo *t = classes.getptr(T::get_class_static());
ERR_FAIL_COND(!t);
t->creation_func = &creator<T>;
t->exposed = true;
t->class_ptr = T::get_class_ptr_static();
T::register_custom_data_to_otdb();
}
template <class T>
static void register_virtual_class() {
GLOBAL_LOCK_FUNCTION;
T::initialize_class();
ClassInfo *t = classes.getptr(T::get_class_static());
ERR_FAIL_COND(!t);
t->exposed = true;
t->class_ptr = T::get_class_ptr_static();
//nothing
}
static void register_extension_class(ObjectNativeExtension *p_extension);
static void unregister_extension_class(const StringName &p_class);
template <class T>
static Object *_create_ptr_func() {
return T::create();
}
template <class T>
static void register_custom_instance_class() {
GLOBAL_LOCK_FUNCTION;
T::initialize_class();
ClassInfo *t = classes.getptr(T::get_class_static());
ERR_FAIL_COND(!t);
t->creation_func = &_create_ptr_func<T>;
t->exposed = true;
t->class_ptr = T::get_class_ptr_static();
T::register_custom_data_to_otdb();
}
static void get_class_list(List<StringName> *p_classes);
static void get_inheriters_from_class(const StringName &p_class, List<StringName> *p_classes);
static void get_direct_inheriters_from_class(const StringName &p_class, List<StringName> *p_classes);
static StringName get_parent_class_nocheck(const StringName &p_class);
static StringName get_parent_class(const StringName &p_class);
static StringName get_compatibility_remapped_class(const StringName &p_class);
static bool class_exists(const StringName &p_class);
static bool is_parent_class(const StringName &p_class, const StringName &p_inherits);
static bool can_instantiate(const StringName &p_class);
static Object *instantiate(const StringName &p_class);
static void instance_get_native_extension_data(ObjectNativeExtension **r_extension, GDExtensionClassInstancePtr *r_extension_instance);
static APIType get_api_type(const StringName &p_class);
static uint64_t get_api_hash(APIType p_api);
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method) {
MethodBind *bind = create_method_bind(p_method);
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, nullptr, 0); //use static function, much smaller binary usage
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[1] = { &p_def1 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 1);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[2] = { &p_def1, &p_def2 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 2);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[3] = { &p_def1, &p_def2, &p_def3 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 3);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[4] = { &p_def1, &p_def2, &p_def3, &p_def4 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 4);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[5] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 5);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5, const Variant &p_def6) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[6] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 6);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5, const Variant &p_def6, const Variant &p_def7) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[7] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6, &p_def7 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 7);
}
template <class N, class M>
static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3, const Variant &p_def4, const Variant &p_def5, const Variant &p_def6, const Variant &p_def7, const Variant &p_def8) {
MethodBind *bind = create_method_bind(p_method);
const Variant *ptr[8] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6, &p_def7, &p_def8 };
return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 8);
}
template <class M>
static MethodBind *bind_vararg_method(uint32_t p_flags, const StringName &p_name, M p_method, const MethodInfo &p_info = MethodInfo(), const Vector<Variant> &p_default_args = Vector<Variant>(), bool p_return_nil_is_variant = true) {
GLOBAL_LOCK_FUNCTION;
MethodBind *bind = create_vararg_method_bind(p_method, p_info, p_return_nil_is_variant);
ERR_FAIL_COND_V(!bind, nullptr);
bind->set_name(p_name);
bind->set_default_arguments(p_default_args);
String instance_type = bind->get_instance_class();
ClassInfo *type = classes.getptr(instance_type);
if (!type) {
memdelete(bind);
ERR_FAIL_COND_V(!type, nullptr);
}
if (type->method_map.has(p_name)) {
memdelete(bind);
// overloading not supported
ERR_FAIL_V_MSG(nullptr, "Method already bound: " + instance_type + "::" + p_name + ".");
}
type->method_map[p_name] = bind;
#ifdef DEBUG_METHODS_ENABLED
// FIXME: <reduz> set_return_type is no longer in MethodBind, so I guess it should be moved to vararg method bind
//bind->set_return_type("Variant");
type->method_order.push_back(p_name);
#endif
return bind;
}
static void bind_method_custom(const StringName &p_class, MethodBind *p_method);
static void add_signal(const StringName &p_class, const MethodInfo &p_signal);
static bool has_signal(const StringName &p_class, const StringName &p_signal, bool p_no_inheritance = false);
static bool get_signal(const StringName &p_class, const StringName &p_signal, MethodInfo *r_signal);
static void get_signal_list(const StringName &p_class, List<MethodInfo> *p_signals, bool p_no_inheritance = false);
static void add_property_group(const StringName &p_class, const String &p_name, const String &p_prefix = "");
static void add_property_subgroup(const StringName &p_class, const String &p_name, const String &p_prefix = "");
static void add_property(const StringName &p_class, const PropertyInfo &p_pinfo, const StringName &p_setter, const StringName &p_getter, int p_index = -1);
static void set_property_default_value(const StringName &p_class, const StringName &p_name, const Variant &p_default);
static void get_property_list(const StringName &p_class, List<PropertyInfo> *p_list, bool p_no_inheritance = false, const Object *p_validator = nullptr);
static bool get_property_info(const StringName &p_class, const StringName &p_property, PropertyInfo *r_info, bool p_no_inheritance = false, const Object *p_validator = nullptr);
static bool set_property(Object *p_object, const StringName &p_property, const Variant &p_value, bool *r_valid = nullptr);
static bool get_property(Object *p_object, const StringName &p_property, Variant &r_value);
static bool has_property(const StringName &p_class, const StringName &p_property, bool p_no_inheritance = false);
static int get_property_index(const StringName &p_class, const StringName &p_property, bool *r_is_valid = nullptr);
static Variant::Type get_property_type(const StringName &p_class, const StringName &p_property, bool *r_is_valid = nullptr);
static StringName get_property_setter(const StringName &p_class, const StringName &p_property);
static StringName get_property_getter(const StringName &p_class, const StringName &p_property);
static bool has_method(const StringName &p_class, const StringName &p_method, bool p_no_inheritance = false);
static void set_method_flags(const StringName &p_class, const StringName &p_method, int p_flags);
static void get_method_list(const StringName &p_class, List<MethodInfo> *p_methods, bool p_no_inheritance = false, bool p_exclude_from_properties = false);
static bool get_method_info(const StringName &p_class, const StringName &p_method, MethodInfo *r_info, bool p_no_inheritance = false, bool p_exclude_from_properties = false);
static MethodBind *get_method(const StringName &p_class, const StringName &p_name);
static void add_virtual_method(const StringName &p_class, const MethodInfo &p_method, bool p_virtual = true);
static void get_virtual_methods(const StringName &p_class, List<MethodInfo> *p_methods, bool p_no_inheritance = false);
static void bind_integer_constant(const StringName &p_class, const StringName &p_enum, const StringName &p_name, int p_constant);
static void get_integer_constant_list(const StringName &p_class, List<String> *p_constants, bool p_no_inheritance = false);
static int get_integer_constant(const StringName &p_class, const StringName &p_name, bool *p_success = nullptr);
static bool has_integer_constant(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
static StringName get_integer_constant_enum(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
static void get_enum_list(const StringName &p_class, List<StringName> *p_enums, bool p_no_inheritance = false);
static void get_enum_constants(const StringName &p_class, const StringName &p_enum, List<StringName> *p_constants, bool p_no_inheritance = false);
static bool has_enum(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
static Variant class_get_default_property_value(const StringName &p_class, const StringName &p_property, bool *r_valid = nullptr);
static StringName get_category(const StringName &p_node);
static void set_class_enabled(const StringName &p_class, bool p_enable);
static bool is_class_enabled(const StringName &p_class);
static bool is_class_exposed(const StringName &p_class);
static void add_resource_base_extension(const StringName &p_extension, const StringName &p_class);
static void get_resource_base_extensions(List<String> *p_extensions);
static void get_extensions_for_type(const StringName &p_class, List<String> *p_extensions);
static bool is_resource_extension(const StringName &p_extension);
static void add_compatibility_class(const StringName &p_class, const StringName &p_fallback);
static void set_current_api(APIType p_api);
static APIType get_current_api();
static void cleanup_defaults();
static void cleanup();
};
#ifdef DEBUG_METHODS_ENABLED
#define BIND_CONSTANT(m_constant) \
ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
#define BIND_ENUM_CONSTANT(m_constant) \
ClassDB::bind_integer_constant(get_class_static(), __constant_get_enum_name(m_constant, #m_constant), #m_constant, m_constant);
#else
#define BIND_CONSTANT(m_constant) \
ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
#define BIND_ENUM_CONSTANT(m_constant) \
ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
#endif
#ifdef TOOLS_ENABLED
#define BIND_VMETHOD(m_method) \
ClassDB::add_virtual_method(get_class_static(), m_method);
#else
#define BIND_VMETHOD(m_method)
#endif
#define GDREGISTER_CLASS(m_class) \
if (!GD_IS_DEFINED(ClassDB_Disable_##m_class)) { \
ClassDB::register_class<m_class>(); \
}
#define GDREGISTER_VIRTUAL_CLASS(m_class) \
if (!GD_IS_DEFINED(ClassDB_Disable_##m_class)) { \
ClassDB::register_virtual_class<m_class>(); \
}
#include "core/disabled_classes.gen.h"
#endif // CLASS_DB_H
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