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98a81fe8aa
* First step for GDNative to behave more like modules * Only Object and ClassDB, the rest needs to happen on the GDNative side.
436 lines
20 KiB
C++
436 lines
20 KiB
C++
/*************************************************************************/
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/* class_db.h */
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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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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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#ifndef CLASS_DB_H
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#define CLASS_DB_H
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#include "core/object/method_bind.h"
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#include "core/object/object.h"
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#include "core/string/print_string.h"
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/** To bind more then 6 parameters include this:
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*
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*/
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// Makes callable_mp readily available in all classes connecting signals.
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// Needs to come after method_bind and object have been included.
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#include "core/object/callable_method_pointer.h"
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#define DEFVAL(m_defval) (m_defval)
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#ifdef DEBUG_METHODS_ENABLED
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struct MethodDefinition {
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StringName name;
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Vector<StringName> args;
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MethodDefinition() {}
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MethodDefinition(const char *p_name) :
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name(p_name) {}
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MethodDefinition(const StringName &p_name) :
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name(p_name) {}
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};
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MethodDefinition D_METHOD(const char *p_name);
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MethodDefinition D_METHOD(const char *p_name, const char *p_arg1);
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MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2);
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MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3);
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MethodDefinition D_METHOD(const char *p_name, const char *p_arg1, const char *p_arg2, const char *p_arg3, const char *p_arg4);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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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);
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#else
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//#define NO_VARIADIC_MACROS
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#ifdef NO_VARIADIC_MACROS
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static _FORCE_INLINE_ const char *D_METHOD(const char *m_name, ...) {
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return m_name;
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}
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#else
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// When DEBUG_METHODS_ENABLED is set this will let the engine know
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// the argument names for easier debugging.
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#define D_METHOD(m_c, ...) m_c
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#endif
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#endif
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class ClassDB {
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public:
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enum APIType {
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API_CORE,
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API_EDITOR,
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API_EXTENSION,
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API_EDITOR_EXTENSION,
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API_NONE
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};
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public:
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struct PropertySetGet {
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int index;
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StringName setter;
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StringName getter;
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MethodBind *_setptr;
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MethodBind *_getptr;
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Variant::Type type;
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};
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struct ClassInfo {
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APIType api = API_NONE;
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ClassInfo *inherits_ptr = nullptr;
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void *class_ptr = nullptr;
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ObjectNativeExtension *native_extension = nullptr;
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HashMap<StringName, MethodBind *> method_map;
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HashMap<StringName, int> constant_map;
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HashMap<StringName, List<StringName>> enum_map;
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HashMap<StringName, MethodInfo> signal_map;
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List<PropertyInfo> property_list;
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HashMap<StringName, PropertyInfo> property_map;
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#ifdef DEBUG_METHODS_ENABLED
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List<StringName> constant_order;
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List<StringName> method_order;
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Set<StringName> methods_in_properties;
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List<MethodInfo> virtual_methods;
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Map<StringName, MethodInfo> virtual_methods_map;
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StringName category;
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#endif
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HashMap<StringName, PropertySetGet> property_setget;
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StringName inherits;
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StringName name;
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bool disabled = false;
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bool exposed = false;
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Object *(*creation_func)() = nullptr;
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ClassInfo() {}
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~ClassInfo() {}
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};
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template <class T>
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static Object *creator() {
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return memnew(T);
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}
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static RWLock lock;
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static HashMap<StringName, ClassInfo> classes;
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static HashMap<StringName, StringName> resource_base_extensions;
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static HashMap<StringName, StringName> compat_classes;
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#ifdef DEBUG_METHODS_ENABLED
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static MethodBind *bind_methodfi(uint32_t p_flags, MethodBind *p_bind, const MethodDefinition &method_name, const Variant **p_defs, int p_defcount);
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#else
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static MethodBind *bind_methodfi(uint32_t p_flags, MethodBind *p_bind, const char *method_name, const Variant **p_defs, int p_defcount);
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#endif
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static APIType current_api;
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static void _add_class2(const StringName &p_class, const StringName &p_inherits);
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static HashMap<StringName, HashMap<StringName, Variant>> default_values;
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static Set<StringName> default_values_cached;
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private:
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// Non-locking variants of get_parent_class and is_parent_class.
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static StringName _get_parent_class(const StringName &p_class);
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static bool _is_parent_class(const StringName &p_class, const StringName &p_inherits);
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public:
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// DO NOT USE THIS!!!!!! NEEDS TO BE PUBLIC BUT DO NOT USE NO MATTER WHAT!!!
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template <class T>
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static void _add_class() {
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_add_class2(T::get_class_static(), T::get_parent_class_static());
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}
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template <class T>
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static void register_class() {
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GLOBAL_LOCK_FUNCTION;
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T::initialize_class();
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ClassInfo *t = classes.getptr(T::get_class_static());
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ERR_FAIL_COND(!t);
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t->creation_func = &creator<T>;
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t->exposed = true;
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t->class_ptr = T::get_class_ptr_static();
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T::register_custom_data_to_otdb();
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}
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template <class T>
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static void register_virtual_class() {
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GLOBAL_LOCK_FUNCTION;
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T::initialize_class();
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ClassInfo *t = classes.getptr(T::get_class_static());
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ERR_FAIL_COND(!t);
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t->exposed = true;
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t->class_ptr = T::get_class_ptr_static();
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//nothing
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}
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static void register_extension_class(ObjectNativeExtension *p_extension);
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template <class T>
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static Object *_create_ptr_func() {
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return T::create();
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}
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template <class T>
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static void register_custom_instance_class() {
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GLOBAL_LOCK_FUNCTION;
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T::initialize_class();
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ClassInfo *t = classes.getptr(T::get_class_static());
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ERR_FAIL_COND(!t);
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t->creation_func = &_create_ptr_func<T>;
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t->exposed = true;
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t->class_ptr = T::get_class_ptr_static();
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T::register_custom_data_to_otdb();
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}
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static void get_class_list(List<StringName> *p_classes);
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static void get_inheriters_from_class(const StringName &p_class, List<StringName> *p_classes);
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static void get_direct_inheriters_from_class(const StringName &p_class, List<StringName> *p_classes);
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static StringName get_parent_class_nocheck(const StringName &p_class);
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static StringName get_parent_class(const StringName &p_class);
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static StringName get_compatibility_remapped_class(const StringName &p_class);
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static bool class_exists(const StringName &p_class);
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static bool is_parent_class(const StringName &p_class, const StringName &p_inherits);
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static bool can_instance(const StringName &p_class);
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static Object *instance(const StringName &p_class);
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static void instance_get_native_extension_data(ObjectNativeExtension **r_extension, void **r_extension_instance);
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static APIType get_api_type(const StringName &p_class);
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static uint64_t get_api_hash(APIType p_api);
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template <class N, class M>
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static MethodBind *bind_method(N p_method_name, M p_method) {
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MethodBind *bind = create_method_bind(p_method);
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, nullptr, 0); //use static function, much smaller binary usage
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}
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template <class N, class M>
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static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[1] = { &p_def1 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 1);
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}
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template <class N, class M>
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static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[2] = { &p_def1, &p_def2 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 2);
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}
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template <class N, class M>
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static MethodBind *bind_method(N p_method_name, M p_method, const Variant &p_def1, const Variant &p_def2, const Variant &p_def3) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[3] = { &p_def1, &p_def2, &p_def3 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 3);
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}
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template <class N, class M>
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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) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[4] = { &p_def1, &p_def2, &p_def3, &p_def4 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 4);
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}
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template <class N, class M>
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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) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[5] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 5);
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}
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template <class N, class M>
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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) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[6] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 6);
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}
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template <class N, class M>
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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) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[7] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6, &p_def7 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 7);
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}
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template <class N, class M>
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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) {
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MethodBind *bind = create_method_bind(p_method);
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const Variant *ptr[8] = { &p_def1, &p_def2, &p_def3, &p_def4, &p_def5, &p_def6, &p_def7, &p_def8 };
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return bind_methodfi(METHOD_FLAGS_DEFAULT, bind, p_method_name, ptr, 8);
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}
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template <class M>
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static MethodBind *bind_vararg_method(uint32_t p_flags, 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) {
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GLOBAL_LOCK_FUNCTION;
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MethodBind *bind = create_vararg_method_bind(p_method, p_info, p_return_nil_is_variant);
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ERR_FAIL_COND_V(!bind, nullptr);
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bind->set_name(p_name);
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bind->set_default_arguments(p_default_args);
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String instance_type = bind->get_instance_class();
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ClassInfo *type = classes.getptr(instance_type);
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if (!type) {
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memdelete(bind);
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ERR_FAIL_COND_V(!type, nullptr);
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}
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if (type->method_map.has(p_name)) {
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memdelete(bind);
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// overloading not supported
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ERR_FAIL_V_MSG(nullptr, "Method already bound: " + instance_type + "::" + p_name + ".");
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}
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type->method_map[p_name] = bind;
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#ifdef DEBUG_METHODS_ENABLED
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// FIXME: <reduz> set_return_type is no longer in MethodBind, so I guess it should be moved to vararg method bind
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//bind->set_return_type("Variant");
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type->method_order.push_back(p_name);
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#endif
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return bind;
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}
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static void bind_method_custom(const StringName &p_class, MethodBind *p_method);
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static void add_signal(StringName p_class, const MethodInfo &p_signal);
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static bool has_signal(StringName p_class, StringName p_signal, bool p_no_inheritance = false);
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static bool get_signal(StringName p_class, StringName p_signal, MethodInfo *r_signal);
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static void get_signal_list(StringName p_class, List<MethodInfo> *p_signals, bool p_no_inheritance = false);
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static void add_property_group(StringName p_class, const String &p_name, const String &p_prefix = "");
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static void add_property_subgroup(StringName p_class, const String &p_name, const String &p_prefix = "");
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static void add_property(StringName p_class, const PropertyInfo &p_pinfo, const StringName &p_setter, const StringName &p_getter, int p_index = -1);
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static void set_property_default_value(StringName p_class, const StringName &p_name, const Variant &p_default);
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static void get_property_list(StringName p_class, List<PropertyInfo> *p_list, bool p_no_inheritance = false, const Object *p_validator = nullptr);
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static bool get_property_info(StringName p_class, StringName p_property, PropertyInfo *r_info, bool p_no_inheritance = false, const Object *p_validator = nullptr);
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static bool set_property(Object *p_object, const StringName &p_property, const Variant &p_value, bool *r_valid = nullptr);
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static bool get_property(Object *p_object, const StringName &p_property, Variant &r_value);
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static bool has_property(const StringName &p_class, const StringName &p_property, bool p_no_inheritance = false);
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static int get_property_index(const StringName &p_class, const StringName &p_property, bool *r_is_valid = nullptr);
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static Variant::Type get_property_type(const StringName &p_class, const StringName &p_property, bool *r_is_valid = nullptr);
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static StringName get_property_setter(StringName p_class, const StringName &p_property);
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static StringName get_property_getter(StringName p_class, const StringName &p_property);
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static bool has_method(StringName p_class, StringName p_method, bool p_no_inheritance = false);
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static void set_method_flags(StringName p_class, StringName p_method, int p_flags);
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static void get_method_list(StringName p_class, List<MethodInfo> *p_methods, bool p_no_inheritance = false, bool p_exclude_from_properties = false);
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static bool get_method_info(StringName p_class, StringName p_method, MethodInfo *r_info, bool p_no_inheritance = false, bool p_exclude_from_properties = false);
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static MethodBind *get_method(StringName p_class, StringName p_name);
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static void add_virtual_method(const StringName &p_class, const MethodInfo &p_method, bool p_virtual = true);
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static void get_virtual_methods(const StringName &p_class, List<MethodInfo> *p_methods, bool p_no_inheritance = false);
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static void bind_integer_constant(const StringName &p_class, const StringName &p_enum, const StringName &p_name, int p_constant);
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static void get_integer_constant_list(const StringName &p_class, List<String> *p_constants, bool p_no_inheritance = false);
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static int get_integer_constant(const StringName &p_class, const StringName &p_name, bool *p_success = nullptr);
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static bool has_integer_constant(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
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static StringName get_integer_constant_enum(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
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static void get_enum_list(const StringName &p_class, List<StringName> *p_enums, bool p_no_inheritance = false);
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static void get_enum_constants(const StringName &p_class, const StringName &p_enum, List<StringName> *p_constants, bool p_no_inheritance = false);
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static bool has_enum(const StringName &p_class, const StringName &p_name, bool p_no_inheritance = false);
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static Variant class_get_default_property_value(const StringName &p_class, const StringName &p_property, bool *r_valid = nullptr);
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static StringName get_category(const StringName &p_node);
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static void set_class_enabled(StringName p_class, bool p_enable);
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static bool is_class_enabled(StringName p_class);
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static bool is_class_exposed(StringName p_class);
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static void add_resource_base_extension(const StringName &p_extension, const StringName &p_class);
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static void get_resource_base_extensions(List<String> *p_extensions);
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static void get_extensions_for_type(const StringName &p_class, List<String> *p_extensions);
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static void add_compatibility_class(const StringName &p_class, const StringName &p_fallback);
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static void set_current_api(APIType p_api);
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static APIType get_current_api();
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static void cleanup_defaults();
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static void cleanup();
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};
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#ifdef DEBUG_METHODS_ENABLED
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#define BIND_CONSTANT(m_constant) \
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ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
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#define BIND_ENUM_CONSTANT(m_constant) \
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ClassDB::bind_integer_constant(get_class_static(), __constant_get_enum_name(m_constant, #m_constant), #m_constant, m_constant);
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#else
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#define BIND_CONSTANT(m_constant) \
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ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
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#define BIND_ENUM_CONSTANT(m_constant) \
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ClassDB::bind_integer_constant(get_class_static(), StringName(), #m_constant, m_constant);
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#endif
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#ifdef TOOLS_ENABLED
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#define BIND_VMETHOD(m_method) \
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ClassDB::add_virtual_method(get_class_static(), m_method);
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#else
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#define BIND_VMETHOD(m_method)
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#endif
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#endif // CLASS_DB_H
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