gdextension_interface.cpp

/**************************************************************************/
/*  gdextension_interface.cpp                                             */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
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/* included in all copies or substantial portions of the Software.        */
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#include "gdextension_interface.h"

#include "core/config/engine.h"
#include "core/extension/gdextension.h"
#include "core/extension/gdextension_special_compat_hashes.h"
#include "core/io/file_access.h"
#include "core/io/image.h"
#include "core/io/xml_parser.h"
#include "core/object/class_db.h"
#include "core/object/script_language_extension.h"
#include "core/object/worker_thread_pool.h"
#include "core/os/memory.h"
#include "core/variant/variant.h"
#include "core/version.h"

#include <string.h>

class CallableCustomExtension : public CallableCustom {
	void *userdata;
	void *token;

	ObjectID object;

	GDExtensionCallableCustomCall call_func;
	GDExtensionCallableCustomIsValid is_valid_func;
	GDExtensionCallableCustomFree free_func;

	GDExtensionCallableCustomEqual equal_func;
	GDExtensionCallableCustomLessThan less_than_func;

	GDExtensionCallableCustomToString to_string_func;

	GDExtensionCallableCustomGetArgumentCount get_argument_count_func;

	uint32_t _hash;

	static bool default_compare_equal(const CallableCustom *p_a, const CallableCustom *p_b) {
		const CallableCustomExtension *a = static_cast<const CallableCustomExtension *>(p_a);
		const CallableCustomExtension *b = static_cast<const CallableCustomExtension *>(p_b);

		if (a->call_func != b->call_func || a->userdata != b->userdata) {
			return false;
		}
		return true;
	}

	static bool default_compare_less(const CallableCustom *p_a, const CallableCustom *p_b) {
		const CallableCustomExtension *a = static_cast<const CallableCustomExtension *>(p_a);
		const CallableCustomExtension *b = static_cast<const CallableCustomExtension *>(p_b);

		if (a->call_func != b->call_func) {
			return a->call_func < b->call_func;
		}
		return a->userdata < b->userdata;
	}

	static bool custom_compare_equal(const CallableCustom *p_a, const CallableCustom *p_b) {
		const CallableCustomExtension *a = static_cast<const CallableCustomExtension *>(p_a);
		const CallableCustomExtension *b = static_cast<const CallableCustomExtension *>(p_b);

		if (a->equal_func != b->equal_func) {
			return false;
		}
		return a->equal_func(a->userdata, b->userdata);
	}

	static bool custom_compare_less(const CallableCustom *p_a, const CallableCustom *p_b) {
		const CallableCustomExtension *a = static_cast<const CallableCustomExtension *>(p_a);
		const CallableCustomExtension *b = static_cast<const CallableCustomExtension *>(p_b);

		if (a->less_than_func != b->less_than_func) {
			return default_compare_less(p_a, p_b);
		}
		return a->less_than_func(a->userdata, b->userdata);
	}

public:
	uint32_t hash() const override {
		return _hash;
	}

	String get_as_text() const override {
		if (to_string_func != nullptr) {
			String out;
			GDExtensionBool is_valid = false;

			to_string_func(userdata, &is_valid, (GDExtensionStringPtr)&out);

			if (is_valid) {
				return out;
			}
		}
		return "<CallableCustom>";
	}

	CompareEqualFunc get_compare_equal_func() const override {
		return (equal_func != nullptr) ? custom_compare_equal : default_compare_equal;
	}

	CompareLessFunc get_compare_less_func() const override {
		return (less_than_func != nullptr) ? custom_compare_less : default_compare_less;
	}

	bool is_valid() const override {
		if (is_valid_func != nullptr && !is_valid_func(userdata)) {
			return false;
		}
		return call_func != nullptr;
	}

	StringName get_method() const override {
		return StringName();
	}

	ObjectID get_object() const override {
		return object;
	}

	int get_argument_count(bool &r_is_valid) const override {
		if (get_argument_count_func != nullptr) {
			GDExtensionBool is_valid = false;

			GDExtensionInt ret = get_argument_count_func(userdata, &is_valid);

			if (is_valid) {
				r_is_valid = true;
				return ret;
			}
		}
		r_is_valid = false;
		return 0;
	}

	void *get_userdata(void *p_token) const {
		return (p_token == token) ? userdata : nullptr;
	}

	void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const override {
		GDExtensionCallError error;

		call_func(userdata, (GDExtensionConstVariantPtr *)p_arguments, p_argcount, (GDExtensionVariantPtr)&r_return_value, &error);

		r_call_error.error = (Callable::CallError::Error)error.error;
		r_call_error.argument = error.argument;
		r_call_error.expected = error.expected;
	}

#ifndef DISABLE_DEPRECATED
	CallableCustomExtension(GDExtensionCallableCustomInfo *p_info) {
		userdata = p_info->callable_userdata;
		token = p_info->token;

		object = p_info->object_id;

		call_func = p_info->call_func;
		is_valid_func = p_info->is_valid_func;
		free_func = p_info->free_func;

		equal_func = p_info->equal_func;
		less_than_func = p_info->less_than_func;

		to_string_func = p_info->to_string_func;

		get_argument_count_func = nullptr;

		// Pre-calculate the hash.
		if (p_info->hash_func != nullptr) {
			_hash = p_info->hash_func(userdata);
		} else {
			_hash = hash_murmur3_one_64((uint64_t)call_func);
			_hash = hash_murmur3_one_64((uint64_t)userdata, _hash);
		}
	}
#endif

	CallableCustomExtension(GDExtensionCallableCustomInfo2 *p_info) {
		userdata = p_info->callable_userdata;
		token = p_info->token;

		object = p_info->object_id;

		call_func = p_info->call_func;
		is_valid_func = p_info->is_valid_func;
		free_func = p_info->free_func;

		equal_func = p_info->equal_func;
		less_than_func = p_info->less_than_func;

		to_string_func = p_info->to_string_func;

		get_argument_count_func = p_info->get_argument_count_func;

		// Pre-calculate the hash.
		if (p_info->hash_func != nullptr) {
			_hash = p_info->hash_func(userdata);
		} else {
			_hash = hash_murmur3_one_64((uint64_t)call_func);
			_hash = hash_murmur3_one_64((uint64_t)userdata, _hash);
		}
	}

	~CallableCustomExtension() {
		if (free_func != nullptr) {
			free_func(userdata);
		}
	}
};

// Core interface functions.
GDExtensionInterfaceFunctionPtr gdextension_get_proc_address(const char *p_name) {
	return GDExtension::get_interface_function(p_name);
}

static void gdextension_get_godot_version(GDExtensionGodotVersion *r_godot_version) {
	r_godot_version->major = VERSION_MAJOR;
	r_godot_version->minor = VERSION_MINOR;
	r_godot_version->patch = VERSION_PATCH;
	r_godot_version->string = VERSION_FULL_NAME;
}

// Memory Functions
static void *gdextension_mem_alloc(size_t p_size) {
	return memalloc(p_size);
}

static void *gdextension_mem_realloc(void *p_mem, size_t p_size) {
	return memrealloc(p_mem, p_size);
}

static void gdextension_mem_free(void *p_mem) {
	memfree(p_mem);
}

// Helper print functions.
static void gdextension_print_error(const char *p_description, const char *p_function, const char *p_file, int32_t p_line, GDExtensionBool p_editor_notify) {
	_err_print_error(p_function, p_file, p_line, p_description, p_editor_notify, ERR_HANDLER_ERROR);
}
static void gdextension_print_error_with_message(const char *p_description, const char *p_message, const char *p_function, const char *p_file, int32_t p_line, GDExtensionBool p_editor_notify) {
	_err_print_error(p_function, p_file, p_line, p_description, p_message, p_editor_notify, ERR_HANDLER_ERROR);
}
static void gdextension_print_warning(const char *p_description, const char *p_function, const char *p_file, int32_t p_line, GDExtensionBool p_editor_notify) {
	_err_print_error(p_function, p_file, p_line, p_description, p_editor_notify, ERR_HANDLER_WARNING);
}
static void gdextension_print_warning_with_message(const char *p_description, const char *p_message, const char *p_function, const char *p_file, int32_t p_line, GDExtensionBool p_editor_notify) {
	_err_print_error(p_function, p_file, p_line, p_description, p_message, p_editor_notify, ERR_HANDLER_WARNING);
}
static void gdextension_print_script_error(const char *p_description, const char *p_function, const char *p_file, int32_t p_line, GDExtensionBool p_editor_notify) {
	_err_print_error(p_function, p_file, p_line, p_description, p_editor_notify, ERR_HANDLER_SCRIPT);
}
static void gdextension_print_script_error_with_message(const char *p_description, const char *p_message, const char *p_function, const char *p_file, int32_t p_line, GDExtensionBool p_editor_notify) {
	_err_print_error(p_function, p_file, p_line, p_description, p_message, p_editor_notify, ERR_HANDLER_SCRIPT);
}

uint64_t gdextension_get_native_struct_size(GDExtensionConstStringNamePtr p_name) {
	const StringName name = *reinterpret_cast<const StringName *>(p_name);
	return ClassDB::get_native_struct_size(name);
}

// Variant functions

static void gdextension_variant_new_copy(GDExtensionUninitializedVariantPtr r_dest, GDExtensionConstVariantPtr p_src) {
	memnew_placement(reinterpret_cast<Variant *>(r_dest), Variant(*reinterpret_cast<const Variant *>(p_src)));
}
static void gdextension_variant_new_nil(GDExtensionUninitializedVariantPtr r_dest) {
	memnew_placement(reinterpret_cast<Variant *>(r_dest), Variant);
}
static void gdextension_variant_destroy(GDExtensionVariantPtr p_self) {
	reinterpret_cast<Variant *>(p_self)->~Variant();
}

// variant type

static void gdextension_variant_call(GDExtensionVariantPtr p_self, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argcount, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error) {
	Variant *self = (Variant *)p_self;
	const StringName method = *reinterpret_cast<const StringName *>(p_method);
	const Variant **args = (const Variant **)p_args;
	Callable::CallError error;
	memnew_placement(r_return, Variant);
	Variant *ret = reinterpret_cast<Variant *>(r_return);
	self->callp(method, args, p_argcount, *ret, error);

	if (r_error) {
		r_error->error = (GDExtensionCallErrorType)(error.error);
		r_error->argument = error.argument;
		r_error->expected = error.expected;
	}
}

static void gdextension_variant_call_static(GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argcount, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error) {
	Variant::Type type = (Variant::Type)p_type;
	const StringName method = *reinterpret_cast<const StringName *>(p_method);
	const Variant **args = (const Variant **)p_args;
	Callable::CallError error;
	memnew_placement(r_return, Variant);
	Variant *ret = reinterpret_cast<Variant *>(r_return);
	Variant::call_static(type, method, args, p_argcount, *ret, error);

	if (r_error) {
		r_error->error = (GDExtensionCallErrorType)error.error;
		r_error->argument = error.argument;
		r_error->expected = error.expected;
	}
}

static void gdextension_variant_evaluate(GDExtensionVariantOperator p_op, GDExtensionConstVariantPtr p_a, GDExtensionConstVariantPtr p_b, GDExtensionUninitializedVariantPtr r_return, GDExtensionBool *r_valid) {
	Variant::Operator op = (Variant::Operator)p_op;
	const Variant *a = (const Variant *)p_a;
	const Variant *b = (const Variant *)p_b;
	bool valid;
	memnew_placement(r_return, Variant);
	Variant *ret = reinterpret_cast<Variant *>(r_return);
	Variant::evaluate(op, *a, *b, *ret, valid);
	*r_valid = valid;
}

static void gdextension_variant_set(GDExtensionVariantPtr p_self, GDExtensionConstVariantPtr p_key, GDExtensionConstVariantPtr p_value, GDExtensionBool *r_valid) {
	Variant *self = (Variant *)p_self;
	const Variant *key = (const Variant *)p_key;
	const Variant *value = (const Variant *)p_value;

	bool valid;
	self->set(*key, *value, &valid);
	*r_valid = valid;
}

static void gdextension_variant_set_named(GDExtensionVariantPtr p_self, GDExtensionConstStringNamePtr p_key, GDExtensionConstVariantPtr p_value, GDExtensionBool *r_valid) {
	Variant *self = (Variant *)p_self;
	const StringName *key = (const StringName *)p_key;
	const Variant *value = (const Variant *)p_value;

	bool valid;
	self->set_named(*key, *value, valid);
	*r_valid = valid;
}

static void gdextension_variant_set_keyed(GDExtensionVariantPtr p_self, GDExtensionConstVariantPtr p_key, GDExtensionConstVariantPtr p_value, GDExtensionBool *r_valid) {
	Variant *self = (Variant *)p_self;
	const Variant *key = (const Variant *)p_key;
	const Variant *value = (const Variant *)p_value;

	bool valid;
	self->set_keyed(*key, *value, valid);
	*r_valid = valid;
}

static void gdextension_variant_set_indexed(GDExtensionVariantPtr p_self, GDExtensionInt p_index, GDExtensionConstVariantPtr p_value, GDExtensionBool *r_valid, GDExtensionBool *r_oob) {
	Variant *self = (Variant *)p_self;
	const Variant *value = (const Variant *)p_value;

	bool valid;
	bool oob;
	self->set_indexed(p_index, *value, valid, oob);
	*r_valid = valid;
	*r_oob = oob;
}

static void gdextension_variant_get(GDExtensionConstVariantPtr p_self, GDExtensionConstVariantPtr p_key, GDExtensionUninitializedVariantPtr r_ret, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	const Variant *key = (const Variant *)p_key;

	bool valid;
	memnew_placement(r_ret, Variant(self->get(*key, &valid)));
	*r_valid = valid;
}

static void gdextension_variant_get_named(GDExtensionConstVariantPtr p_self, GDExtensionConstStringNamePtr p_key, GDExtensionUninitializedVariantPtr r_ret, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	const StringName *key = (const StringName *)p_key;

	bool valid;
	memnew_placement(r_ret, Variant(self->get_named(*key, valid)));
	*r_valid = valid;
}

static void gdextension_variant_get_keyed(GDExtensionConstVariantPtr p_self, GDExtensionConstVariantPtr p_key, GDExtensionUninitializedVariantPtr r_ret, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	const Variant *key = (const Variant *)p_key;

	bool valid;
	memnew_placement(r_ret, Variant(self->get_keyed(*key, valid)));
	*r_valid = valid;
}

static void gdextension_variant_get_indexed(GDExtensionConstVariantPtr p_self, GDExtensionInt p_index, GDExtensionUninitializedVariantPtr r_ret, GDExtensionBool *r_valid, GDExtensionBool *r_oob) {
	const Variant *self = (const Variant *)p_self;

	bool valid;
	bool oob;
	memnew_placement(r_ret, Variant(self->get_indexed(p_index, valid, oob)));
	*r_valid = valid;
	*r_oob = oob;
}

/// Iteration.
static GDExtensionBool gdextension_variant_iter_init(GDExtensionConstVariantPtr p_self, GDExtensionUninitializedVariantPtr r_iter, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	memnew_placement(r_iter, Variant);
	Variant *iter = reinterpret_cast<Variant *>(r_iter);

	bool valid;
	bool ret = self->iter_init(*iter, valid);
	*r_valid = valid;
	return ret;
}

static GDExtensionBool gdextension_variant_iter_next(GDExtensionConstVariantPtr p_self, GDExtensionVariantPtr r_iter, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	Variant *iter = (Variant *)r_iter;

	bool valid;
	bool ret = self->iter_next(*iter, valid);
	*r_valid = valid;
	return ret;
}

static void gdextension_variant_iter_get(GDExtensionConstVariantPtr p_self, GDExtensionVariantPtr r_iter, GDExtensionUninitializedVariantPtr r_ret, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	Variant *iter = (Variant *)r_iter;

	bool valid;
	memnew_placement(r_ret, Variant(self->iter_get(*iter, valid)));
	*r_valid = valid;
}

/// Variant functions.
static GDExtensionInt gdextension_variant_hash(GDExtensionConstVariantPtr p_self) {
	const Variant *self = (const Variant *)p_self;
	return self->hash();
}

static GDExtensionInt gdextension_variant_recursive_hash(GDExtensionConstVariantPtr p_self, GDExtensionInt p_recursion_count) {
	const Variant *self = (const Variant *)p_self;
	return self->recursive_hash(p_recursion_count);
}

static GDExtensionBool gdextension_variant_hash_compare(GDExtensionConstVariantPtr p_self, GDExtensionConstVariantPtr p_other) {
	const Variant *self = (const Variant *)p_self;
	const Variant *other = (const Variant *)p_other;
	return self->hash_compare(*other);
}

static GDExtensionBool gdextension_variant_booleanize(GDExtensionConstVariantPtr p_self) {
	const Variant *self = (const Variant *)p_self;
	return self->booleanize();
}

static void gdextension_variant_duplicate(GDExtensionConstVariantPtr p_self, GDExtensionUninitializedVariantPtr r_ret, GDExtensionBool p_deep) {
	const Variant *self = (const Variant *)p_self;
	memnew_placement(r_ret, Variant(self->duplicate(p_deep)));
}

static void gdextension_variant_stringify(GDExtensionConstVariantPtr p_self, GDExtensionUninitializedVariantPtr r_ret) {
	const Variant *self = (const Variant *)p_self;
	memnew_placement(r_ret, String(*self));
}

static GDExtensionVariantType gdextension_variant_get_type(GDExtensionConstVariantPtr p_self) {
	const Variant *self = (const Variant *)p_self;
	return (GDExtensionVariantType)self->get_type();
}

static GDExtensionBool gdextension_variant_has_method(GDExtensionConstVariantPtr p_self, GDExtensionConstStringNamePtr p_method) {
	const Variant *self = (const Variant *)p_self;
	const StringName *method = (const StringName *)p_method;
	return self->has_method(*method);
}

static GDExtensionBool gdextension_variant_has_member(GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_member) {
	return Variant::has_member((Variant::Type)p_type, *((const StringName *)p_member));
}

static GDExtensionBool gdextension_variant_has_key(GDExtensionConstVariantPtr p_self, GDExtensionConstVariantPtr p_key, GDExtensionBool *r_valid) {
	const Variant *self = (const Variant *)p_self;
	const Variant *key = (const Variant *)p_key;
	bool valid;
	bool ret = self->has_key(*key, valid);
	*r_valid = valid;
	return ret;
}

static GDObjectInstanceID gdextension_variant_get_object_instance_id(GDExtensionConstVariantPtr p_self) {
	const Variant *self = (const Variant *)p_self;
	if (likely(self->get_type() == Variant::OBJECT)) {
		return self->operator ObjectID();
	}
	return 0;
}

static void gdextension_variant_get_type_name(GDExtensionVariantType p_type, GDExtensionUninitializedVariantPtr r_ret) {
	String name = Variant::get_type_name((Variant::Type)p_type);
	memnew_placement(r_ret, String(name));
}

static GDExtensionBool gdextension_variant_can_convert(GDExtensionVariantType p_from, GDExtensionVariantType p_to) {
	return Variant::can_convert((Variant::Type)p_from, (Variant::Type)p_to);
}

static GDExtensionBool gdextension_variant_can_convert_strict(GDExtensionVariantType p_from, GDExtensionVariantType p_to) {
	return Variant::can_convert_strict((Variant::Type)p_from, (Variant::Type)p_to);
}

// Variant interaction.
static GDExtensionVariantFromTypeConstructorFunc gdextension_get_variant_from_type_constructor(GDExtensionVariantType p_type) {
	switch (p_type) {
		case GDEXTENSION_VARIANT_TYPE_BOOL:
			return VariantTypeConstructor<bool>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_INT:
			return VariantTypeConstructor<int64_t>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_FLOAT:
			return VariantTypeConstructor<double>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_STRING:
			return VariantTypeConstructor<String>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_VECTOR2:
			return VariantTypeConstructor<Vector2>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_VECTOR2I:
			return VariantTypeConstructor<Vector2i>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_RECT2:
			return VariantTypeConstructor<Rect2>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_RECT2I:
			return VariantTypeConstructor<Rect2i>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_VECTOR3:
			return VariantTypeConstructor<Vector3>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_VECTOR3I:
			return VariantTypeConstructor<Vector3i>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_TRANSFORM2D:
			return VariantTypeConstructor<Transform2D>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_VECTOR4:
			return VariantTypeConstructor<Vector4>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_VECTOR4I:
			return VariantTypeConstructor<Vector4i>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PLANE:
			return VariantTypeConstructor<Plane>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_QUATERNION:
			return VariantTypeConstructor<Quaternion>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_AABB:
			return VariantTypeConstructor<AABB>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_BASIS:
			return VariantTypeConstructor<Basis>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_TRANSFORM3D:
			return VariantTypeConstructor<Transform3D>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PROJECTION:
			return VariantTypeConstructor<Projection>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_COLOR:
			return VariantTypeConstructor<Color>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_STRING_NAME:
			return VariantTypeConstructor<StringName>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_NODE_PATH:
			return VariantTypeConstructor<NodePath>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_RID:
			return VariantTypeConstructor<RID>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_OBJECT:
			return VariantTypeConstructor<Object *>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_CALLABLE:
			return VariantTypeConstructor<Callable>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_SIGNAL:
			return VariantTypeConstructor<Signal>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_DICTIONARY:
			return VariantTypeConstructor<Dictionary>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_ARRAY:
			return VariantTypeConstructor<Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_BYTE_ARRAY:
			return VariantTypeConstructor<PackedByteArray>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_INT32_ARRAY:
			return VariantTypeConstructor<PackedInt32Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_INT64_ARRAY:
			return VariantTypeConstructor<PackedInt64Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT32_ARRAY:
			return VariantTypeConstructor<PackedFloat32Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT64_ARRAY:
			return VariantTypeConstructor<PackedFloat64Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_STRING_ARRAY:
			return VariantTypeConstructor<PackedStringArray>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR2_ARRAY:
			return VariantTypeConstructor<PackedVector2Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR3_ARRAY:
			return VariantTypeConstructor<PackedVector3Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR4_ARRAY:
			return VariantTypeConstructor<PackedVector4Array>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_PACKED_COLOR_ARRAY:
			return VariantTypeConstructor<PackedColorArray>::variant_from_type;
		case GDEXTENSION_VARIANT_TYPE_NIL:
		case GDEXTENSION_VARIANT_TYPE_VARIANT_MAX:
			ERR_FAIL_V_MSG(nullptr, "Getting Variant conversion function with invalid type");
	}
	ERR_FAIL_V_MSG(nullptr, "Getting Variant conversion function with invalid type");
}

static GDExtensionTypeFromVariantConstructorFunc gdextension_get_variant_to_type_constructor(GDExtensionVariantType p_type) {
	switch (p_type) {
		case GDEXTENSION_VARIANT_TYPE_BOOL:
			return VariantTypeConstructor<bool>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_INT:
			return VariantTypeConstructor<int64_t>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_FLOAT:
			return VariantTypeConstructor<double>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_STRING:
			return VariantTypeConstructor<String>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_VECTOR2:
			return VariantTypeConstructor<Vector2>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_VECTOR2I:
			return VariantTypeConstructor<Vector2i>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_RECT2:
			return VariantTypeConstructor<Rect2>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_RECT2I:
			return VariantTypeConstructor<Rect2i>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_VECTOR3:
			return VariantTypeConstructor<Vector3>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_VECTOR3I:
			return VariantTypeConstructor<Vector3i>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_TRANSFORM2D:
			return VariantTypeConstructor<Transform2D>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_VECTOR4:
			return VariantTypeConstructor<Vector4>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_VECTOR4I:
			return VariantTypeConstructor<Vector4i>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PLANE:
			return VariantTypeConstructor<Plane>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_QUATERNION:
			return VariantTypeConstructor<Quaternion>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_AABB:
			return VariantTypeConstructor<AABB>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_BASIS:
			return VariantTypeConstructor<Basis>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_TRANSFORM3D:
			return VariantTypeConstructor<Transform3D>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PROJECTION:
			return VariantTypeConstructor<Projection>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_COLOR:
			return VariantTypeConstructor<Color>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_STRING_NAME:
			return VariantTypeConstructor<StringName>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_NODE_PATH:
			return VariantTypeConstructor<NodePath>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_RID:
			return VariantTypeConstructor<RID>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_OBJECT:
			return VariantTypeConstructor<Object *>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_CALLABLE:
			return VariantTypeConstructor<Callable>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_SIGNAL:
			return VariantTypeConstructor<Signal>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_DICTIONARY:
			return VariantTypeConstructor<Dictionary>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_ARRAY:
			return VariantTypeConstructor<Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_BYTE_ARRAY:
			return VariantTypeConstructor<PackedByteArray>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_INT32_ARRAY:
			return VariantTypeConstructor<PackedInt32Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_INT64_ARRAY:
			return VariantTypeConstructor<PackedInt64Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT32_ARRAY:
			return VariantTypeConstructor<PackedFloat32Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT64_ARRAY:
			return VariantTypeConstructor<PackedFloat64Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_STRING_ARRAY:
			return VariantTypeConstructor<PackedStringArray>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR2_ARRAY:
			return VariantTypeConstructor<PackedVector2Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR3_ARRAY:
			return VariantTypeConstructor<PackedVector3Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR4_ARRAY:
			return VariantTypeConstructor<PackedVector4Array>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_PACKED_COLOR_ARRAY:
			return VariantTypeConstructor<PackedColorArray>::type_from_variant;
		case GDEXTENSION_VARIANT_TYPE_NIL:
		case GDEXTENSION_VARIANT_TYPE_VARIANT_MAX:
			ERR_FAIL_V_MSG(nullptr, "Getting Variant conversion function with invalid type");
	}
	ERR_FAIL_V_MSG(nullptr, "Getting Variant conversion function with invalid type");
}

static GDExtensionVariantGetInternalPtrFunc gdextension_variant_get_ptr_internal_getter(GDExtensionVariantType p_type) {
	switch (p_type) {
		case GDEXTENSION_VARIANT_TYPE_BOOL:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<bool *(*)(Variant *)>(VariantInternal::get_bool));
		case GDEXTENSION_VARIANT_TYPE_INT:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<int64_t *(*)(Variant *)>(VariantInternal::get_int));
		case GDEXTENSION_VARIANT_TYPE_FLOAT:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<double *(*)(Variant *)>(VariantInternal::get_float));
		case GDEXTENSION_VARIANT_TYPE_STRING:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<String *(*)(Variant *)>(VariantInternal::get_string));
		case GDEXTENSION_VARIANT_TYPE_VECTOR2:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector2 *(*)(Variant *)>(VariantInternal::get_vector2));
		case GDEXTENSION_VARIANT_TYPE_VECTOR2I:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector2i *(*)(Variant *)>(VariantInternal::get_vector2i));
		case GDEXTENSION_VARIANT_TYPE_RECT2:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Rect2 *(*)(Variant *)>(VariantInternal::get_rect2));
		case GDEXTENSION_VARIANT_TYPE_RECT2I:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Rect2i *(*)(Variant *)>(VariantInternal::get_rect2i));
		case GDEXTENSION_VARIANT_TYPE_VECTOR3:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector3 *(*)(Variant *)>(VariantInternal::get_vector3));
		case GDEXTENSION_VARIANT_TYPE_VECTOR3I:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector3i *(*)(Variant *)>(VariantInternal::get_vector3i));
		case GDEXTENSION_VARIANT_TYPE_TRANSFORM2D:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Transform2D *(*)(Variant *)>(VariantInternal::get_transform2d));
		case GDEXTENSION_VARIANT_TYPE_VECTOR4:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector4 *(*)(Variant *)>(VariantInternal::get_vector4));
		case GDEXTENSION_VARIANT_TYPE_VECTOR4I:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Vector4i *(*)(Variant *)>(VariantInternal::get_vector4i));
		case GDEXTENSION_VARIANT_TYPE_PLANE:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Plane *(*)(Variant *)>(VariantInternal::get_plane));
		case GDEXTENSION_VARIANT_TYPE_QUATERNION:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Quaternion *(*)(Variant *)>(VariantInternal::get_quaternion));
		case GDEXTENSION_VARIANT_TYPE_AABB:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<AABB *(*)(Variant *)>(VariantInternal::get_aabb));
		case GDEXTENSION_VARIANT_TYPE_BASIS:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Basis *(*)(Variant *)>(VariantInternal::get_basis));
		case GDEXTENSION_VARIANT_TYPE_TRANSFORM3D:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Transform3D *(*)(Variant *)>(VariantInternal::get_transform));
		case GDEXTENSION_VARIANT_TYPE_PROJECTION:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Projection *(*)(Variant *)>(VariantInternal::get_projection));
		case GDEXTENSION_VARIANT_TYPE_COLOR:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Color *(*)(Variant *)>(VariantInternal::get_color));
		case GDEXTENSION_VARIANT_TYPE_STRING_NAME:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<StringName *(*)(Variant *)>(VariantInternal::get_string_name));
		case GDEXTENSION_VARIANT_TYPE_NODE_PATH:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<NodePath *(*)(Variant *)>(VariantInternal::get_node_path));
		case GDEXTENSION_VARIANT_TYPE_RID:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<RID *(*)(Variant *)>(VariantInternal::get_rid));
		case GDEXTENSION_VARIANT_TYPE_OBJECT:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Object **(*)(Variant *)>(VariantInternal::get_object));
		case GDEXTENSION_VARIANT_TYPE_CALLABLE:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Callable *(*)(Variant *)>(VariantInternal::get_callable));
		case GDEXTENSION_VARIANT_TYPE_SIGNAL:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Signal *(*)(Variant *)>(VariantInternal::get_signal));
		case GDEXTENSION_VARIANT_TYPE_DICTIONARY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Dictionary *(*)(Variant *)>(VariantInternal::get_dictionary));
		case GDEXTENSION_VARIANT_TYPE_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<Array *(*)(Variant *)>(VariantInternal::get_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_BYTE_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedByteArray *(*)(Variant *)>(VariantInternal::get_byte_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_INT32_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedInt32Array *(*)(Variant *)>(VariantInternal::get_int32_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_INT64_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedInt64Array *(*)(Variant *)>(VariantInternal::get_int64_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT32_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedFloat32Array *(*)(Variant *)>(VariantInternal::get_float32_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_FLOAT64_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedFloat64Array *(*)(Variant *)>(VariantInternal::get_float64_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_STRING_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedStringArray *(*)(Variant *)>(VariantInternal::get_string_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR2_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedVector2Array *(*)(Variant *)>(VariantInternal::get_vector2_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR3_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedVector3Array *(*)(Variant *)>(VariantInternal::get_vector3_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_COLOR_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedColorArray *(*)(Variant *)>(VariantInternal::get_color_array));
		case GDEXTENSION_VARIANT_TYPE_PACKED_VECTOR4_ARRAY:
			return reinterpret_cast<GDExtensionVariantGetInternalPtrFunc>(static_cast<PackedVector4Array *(*)(Variant *)>(VariantInternal::get_vector4_array));
		case GDEXTENSION_VARIANT_TYPE_NIL:
		case GDEXTENSION_VARIANT_TYPE_VARIANT_MAX:
			ERR_FAIL_V_MSG(nullptr, "Getting Variant get internal pointer function with invalid type.");
	}
	ERR_FAIL_V_MSG(nullptr, "Getting Variant get internal pointer function with invalid type.");
}

// ptrcalls
static GDExtensionPtrOperatorEvaluator gdextension_variant_get_ptr_operator_evaluator(GDExtensionVariantOperator p_operator, GDExtensionVariantType p_type_a, GDExtensionVariantType p_type_b) {
	return (GDExtensionPtrOperatorEvaluator)Variant::get_ptr_operator_evaluator(Variant::Operator(p_operator), Variant::Type(p_type_a), Variant::Type(p_type_b));
}
static GDExtensionPtrBuiltInMethod gdextension_variant_get_ptr_builtin_method(GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_method, GDExtensionInt p_hash) {
	const StringName method = *reinterpret_cast<const StringName *>(p_method);
	uint32_t hash = Variant::get_builtin_method_hash(Variant::Type(p_type), method);
	if (hash != p_hash) {
		ERR_PRINT_ONCE("Error getting method " + method + ", hash mismatch.");
		return nullptr;
	}

	return (GDExtensionPtrBuiltInMethod)Variant::get_ptr_builtin_method(Variant::Type(p_type), method);
}
static GDExtensionPtrConstructor gdextension_variant_get_ptr_constructor(GDExtensionVariantType p_type, int32_t p_constructor) {
	return (GDExtensionPtrConstructor)Variant::get_ptr_constructor(Variant::Type(p_type), p_constructor);
}
static GDExtensionPtrDestructor gdextension_variant_get_ptr_destructor(GDExtensionVariantType p_type) {
	return (GDExtensionPtrDestructor)Variant::get_ptr_destructor(Variant::Type(p_type));
}
static void gdextension_variant_construct(GDExtensionVariantType p_type, GDExtensionUninitializedVariantPtr r_base, const GDExtensionConstVariantPtr *p_args, int32_t p_argument_count, GDExtensionCallError *r_error) {
	memnew_placement(r_base, Variant);
	Variant *base = reinterpret_cast<Variant *>(r_base);

	Callable::CallError error;
	Variant::construct(Variant::Type(p_type), *base, (const Variant **)p_args, p_argument_count, error);

	if (r_error) {
		r_error->error = (GDExtensionCallErrorType)(error.error);
		r_error->argument = error.argument;
		r_error->expected = error.expected;
	}
}
static GDExtensionPtrSetter gdextension_variant_get_ptr_setter(GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_member) {
	const StringName member = *reinterpret_cast<const StringName *>(p_member);
	return (GDExtensionPtrSetter)Variant::get_member_ptr_setter(Variant::Type(p_type), member);
}
static GDExtensionPtrGetter gdextension_variant_get_ptr_getter(GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_member) {
	const StringName member = *reinterpret_cast<const StringName *>(p_member);
	return (GDExtensionPtrGetter)Variant::get_member_ptr_getter(Variant::Type(p_type), member);
}
static GDExtensionPtrIndexedSetter gdextension_variant_get_ptr_indexed_setter(GDExtensionVariantType p_type) {
	return (GDExtensionPtrIndexedSetter)Variant::get_member_ptr_indexed_setter(Variant::Type(p_type));
}
static GDExtensionPtrIndexedGetter gdextension_variant_get_ptr_indexed_getter(GDExtensionVariantType p_type) {
	return (GDExtensionPtrIndexedGetter)Variant::get_member_ptr_indexed_getter(Variant::Type(p_type));
}
static GDExtensionPtrKeyedSetter gdextension_variant_get_ptr_keyed_setter(GDExtensionVariantType p_type) {
	return (GDExtensionPtrKeyedSetter)Variant::get_member_ptr_keyed_setter(Variant::Type(p_type));
}
static GDExtensionPtrKeyedGetter gdextension_variant_get_ptr_keyed_getter(GDExtensionVariantType p_type) {
	return (GDExtensionPtrKeyedGetter)Variant::get_member_ptr_keyed_getter(Variant::Type(p_type));
}
static GDExtensionPtrKeyedChecker gdextension_variant_get_ptr_keyed_checker(GDExtensionVariantType p_type) {
	return (GDExtensionPtrKeyedChecker)Variant::get_member_ptr_keyed_checker(Variant::Type(p_type));
}
static void gdextension_variant_get_constant_value(GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_constant, GDExtensionUninitializedVariantPtr r_ret) {
	StringName constant = *reinterpret_cast<const StringName *>(p_constant);
	memnew_placement(r_ret, Variant(Variant::get_constant_value(Variant::Type(p_type), constant)));
}
static GDExtensionPtrUtilityFunction gdextension_variant_get_ptr_utility_function(GDExtensionConstStringNamePtr p_function, GDExtensionInt p_hash) {
	StringName function = *reinterpret_cast<const StringName *>(p_function);
	uint32_t hash = Variant::get_utility_function_hash(function);
	if (hash != p_hash) {
		ERR_PRINT_ONCE("Error getting utility function " + function + ", hash mismatch.");
		return nullptr;
	}
	return (GDExtensionPtrUtilityFunction)Variant::get_ptr_utility_function(function);
}

//string helpers

static void gdextension_string_new_with_latin1_chars(GDExtensionUninitializedStringPtr r_dest, const char *p_contents) {
	memnew_placement(r_dest, String(p_contents));
}

static void gdextension_string_new_with_utf8_chars(GDExtensionUninitializedStringPtr r_dest, const char *p_contents) {
	memnew_placement(r_dest, String);
	String *dest = reinterpret_cast<String *>(r_dest);
	dest->parse_utf8(p_contents);
}

static void gdextension_string_new_with_utf16_chars(GDExtensionUninitializedStringPtr r_dest, const char16_t *p_contents) {
	memnew_placement(r_dest, String);
	String *dest = reinterpret_cast<String *>(r_dest);
	dest->parse_utf16(p_contents);
}

static void gdextension_string_new_with_utf32_chars(GDExtensionUninitializedStringPtr r_dest, const char32_t *p_contents) {
	memnew_placement(r_dest, String((const char32_t *)p_contents));
}

static void gdextension_string_new_with_wide_chars(GDExtensionUninitializedStringPtr r_dest, const wchar_t *p_contents) {
	if constexpr (sizeof(wchar_t) == 2) {
		// wchar_t is 16 bit, parse.
		memnew_placement(r_dest, String);
		String *dest = reinterpret_cast<String *>(r_dest);
		dest->parse_utf16((const char16_t *)p_contents);
	} else {
		// wchar_t is 32 bit, copy.
		memnew_placement(r_dest, String((const char32_t *)p_contents));
	}
}

static void gdextension_string_new_with_latin1_chars_and_len(GDExtensionUninitializedStringPtr r_dest, const char *p_contents, GDExtensionInt p_size) {
	memnew_placement(r_dest, String(p_contents, p_size));
}

static void gdextension_string_new_with_utf8_chars_and_len(GDExtensionUninitializedStringPtr r_dest, const char *p_contents, GDExtensionInt p_size) {
	memnew_placement(r_dest, String);
	String *dest = reinterpret_cast<String *>(r_dest);
	dest->parse_utf8(p_contents, p_size);
}

static GDExtensionInt gdextension_string_new_with_utf8_chars_and_len2(GDExtensionUninitializedStringPtr r_dest, const char *p_contents, GDExtensionInt p_size) {
	memnew_placement(r_dest, String);
	String *dest = reinterpret_cast<String *>(r_dest);
	return (GDExtensionInt)dest->parse_utf8(p_contents, p_size);
}

static void gdextension_string_new_with_utf16_chars_and_len(GDExtensionUninitializedStringPtr r_dest, const char16_t *p_contents, GDExtensionInt p_char_count) {
	memnew_placement(r_dest, String);
	String *dest = reinterpret_cast<String *>(r_dest);
	dest->parse_utf16(p_contents, p_char_count);
}

static GDExtensionInt gdextension_string_new_with_utf16_chars_and_len2(GDExtensionUninitializedStringPtr r_dest, const char16_t *p_contents, GDExtensionInt p_char_count, GDExtensionBool p_default_little_endian) {
	memnew_placement(r_dest, String);
	String *dest = reinterpret_cast<String *>(r_dest);
	return (GDExtensionInt)dest->parse_utf16(p_contents, p_char_count, p_default_little_endian);
}

static void gdextension_string_new_with_utf32_chars_and_len(GDExtensionUninitializedStringPtr r_dest, const char32_t *p_contents, GDExtensionInt p_char_count) {
	memnew_placement(r_dest, String((const char32_t *)p_contents, p_char_count));
}

static void gdextension_string_new_with_wide_chars_and_len(GDExtensionUninitializedStringPtr r_dest, const wchar_t *p_contents, GDExtensionInt p_char_count) {
	if constexpr (sizeof(wchar_t) == 2) {
		// wchar_t is 16 bit, parse.
		memnew_placement(r_dest, String);
		String *dest = reinterpret_cast<String *>(r_dest);
		dest->parse_utf16((const char16_t *)p_contents, p_char_count);
	} else {
		// wchar_t is 32 bit, copy.
		memnew_placement(r_dest, String((const char32_t *)p_contents, p_char_count));
	}
}

static GDExtensionInt gdextension_string_to_latin1_chars(GDExtensionConstStringPtr p_self, char *r_text, GDExtensionInt p_max_write_length) {
	String *self = (String *)p_self;
	CharString cs = self->ascii(true);
	GDExtensionInt len = cs.length();
	if (r_text) {
		const char *s_text = cs.ptr();
		for (GDExtensionInt i = 0; i < MIN(len, p_max_write_length); i++) {
			r_text[i] = s_text[i];
		}
	}
	return len;
}
static GDExtensionInt gdextension_string_to_utf8_chars(GDExtensionConstStringPtr p_self, char *r_text, GDExtensionInt p_max_write_length) {
	String *self = (String *)p_self;
	CharString cs = self->utf8();
	GDExtensionInt len = cs.length();
	if (r_text) {
		const char *s_text = cs.ptr();
		for (GDExtensionInt i = 0; i < MIN(len, p_max_write_length); i++) {
			r_text[i] = s_text[i];
		}
	}
	return len;
}
static GDExtensionInt gdextension_string_to_utf16_chars(GDExtensionConstStringPtr p_self, char16_t *r_text, GDExtensionInt p_max_write_length) {
	String *self = (String *)p_self;
	Char16String cs = self->utf16();
	GDExtensionInt len = cs.length();
	if (r_text) {
		const char16_t *s_text = cs.ptr();
		for (GDExtensionInt i = 0; i < MIN(len, p_max_write_length); i++) {
			r_text[i] = s_text[i];
		}
	}
	return len;
}
static GDExtensionInt gdextension_string_to_utf32_chars(GDExtensionConstStringPtr p_self, char32_t *r_text, GDExtensionInt p_max_write_length) {
	String *self = (String *)p_self;
	GDExtensionInt len = self->length();
	if (r_text) {
		const char32_t *s_text = self->ptr();
		for (GDExtensionInt i = 0; i < MIN(len, p_max_write_length); i++) {
			r_text[i] = s_text[i];
		}
	}
	return len;
}
static GDExtensionInt gdextension_string_to_wide_chars(GDExtensionConstStringPtr p_self, wchar_t *r_text, GDExtensionInt p_max_write_length) {
	if constexpr (sizeof(wchar_t) == 4) {
		return gdextension_string_to_utf32_chars(p_self, (char32_t *)r_text, p_max_write_length);
	} else {
		return gdextension_string_to_utf16_chars(p_self, (char16_t *)r_text, p_max_write_length);
	}
}

static char32_t *gdextension_string_operator_index(GDExtensionStringPtr p_self, GDExtensionInt p_index) {
	String *self = (String *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->length() + 1)) {
		return nullptr;
	}
	return &self->ptrw()[p_index];
}

static const char32_t *gdextension_string_operator_index_const(GDExtensionConstStringPtr p_self, GDExtensionInt p_index) {
	const String *self = (const String *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->length() + 1)) {
		return nullptr;
	}
	return &self->ptr()[p_index];
}

static void gdextension_string_operator_plus_eq_string(GDExtensionStringPtr p_self, GDExtensionConstStringPtr p_b) {
	String *self = (String *)p_self;
	const String *b = (const String *)p_b;
	*self += *b;
}

static void gdextension_string_operator_plus_eq_char(GDExtensionStringPtr p_self, char32_t p_b) {
	String *self = (String *)p_self;
	*self += p_b;
}

static void gdextension_string_operator_plus_eq_cstr(GDExtensionStringPtr p_self, const char *p_b) {
	String *self = (String *)p_self;
	*self += p_b;
}

static void gdextension_string_operator_plus_eq_wcstr(GDExtensionStringPtr p_self, const wchar_t *p_b) {
	String *self = (String *)p_self;
	*self += p_b;
}

static void gdextension_string_operator_plus_eq_c32str(GDExtensionStringPtr p_self, const char32_t *p_b) {
	String *self = (String *)p_self;
	*self += p_b;
}

static GDExtensionInt gdextension_string_resize(GDExtensionStringPtr p_self, GDExtensionInt p_length) {
	String *self = (String *)p_self;
	return (*self).resize(p_length);
}

static void gdextension_string_name_new_with_latin1_chars(GDExtensionUninitializedStringNamePtr r_dest, const char *p_contents, GDExtensionBool p_is_static) {
	memnew_placement(r_dest, StringName(p_contents, static_cast<bool>(p_is_static)));
}

static void gdextension_string_name_new_with_utf8_chars(GDExtensionUninitializedStringNamePtr r_dest, const char *p_contents) {
	String tmp;
	tmp.parse_utf8(p_contents);

	memnew_placement(r_dest, StringName(tmp));
}

static void gdextension_string_name_new_with_utf8_chars_and_len(GDExtensionUninitializedStringNamePtr r_dest, const char *p_contents, GDExtensionInt p_size) {
	String tmp;
	tmp.parse_utf8(p_contents, p_size);

	memnew_placement(r_dest, StringName(tmp));
}

static GDExtensionInt gdextension_xml_parser_open_buffer(GDExtensionObjectPtr p_instance, const uint8_t *p_buffer, size_t p_size) {
	XMLParser *xml = (XMLParser *)p_instance;
	return (GDExtensionInt)xml->_open_buffer(p_buffer, p_size);
}

static void gdextension_file_access_store_buffer(GDExtensionObjectPtr p_instance, const uint8_t *p_src, uint64_t p_length) {
	FileAccess *fa = (FileAccess *)p_instance;
	fa->store_buffer(p_src, p_length);
}

static uint64_t gdextension_file_access_get_buffer(GDExtensionConstObjectPtr p_instance, uint8_t *p_dst, uint64_t p_length) {
	const FileAccess *fa = (FileAccess *)p_instance;
	return fa->get_buffer(p_dst, p_length);
}

static uint8_t *gdextension_image_ptrw(GDExtensionObjectPtr p_instance) {
	Image *img = (Image *)p_instance;
	return img->ptrw();
}

static const uint8_t *gdextension_image_ptr(GDExtensionObjectPtr p_instance) {
	Image *img = (Image *)p_instance;
	return img->ptr();
}

static int64_t gdextension_worker_thread_pool_add_native_group_task(GDExtensionObjectPtr p_instance, void (*p_func)(void *, uint32_t), void *p_userdata, int p_elements, int p_tasks, GDExtensionBool p_high_priority, GDExtensionConstStringPtr p_description) {
	WorkerThreadPool *p = (WorkerThreadPool *)p_instance;
	const String *description = (const String *)p_description;
	return (int64_t)p->add_native_group_task(p_func, p_userdata, p_elements, p_tasks, static_cast<bool>(p_high_priority), *description);
}

static int64_t gdextension_worker_thread_pool_add_native_task(GDExtensionObjectPtr p_instance, void (*p_func)(void *), void *p_userdata, GDExtensionBool p_high_priority, GDExtensionConstStringPtr p_description) {
	WorkerThreadPool *p = (WorkerThreadPool *)p_instance;
	const String *description = (const String *)p_description;
	return (int64_t)p->add_native_task(p_func, p_userdata, static_cast<bool>(p_high_priority), *description);
}

/* Packed array functions */

static uint8_t *gdextension_packed_byte_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedByteArray *self = (PackedByteArray *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptrw()[p_index];
}

static const uint8_t *gdextension_packed_byte_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedByteArray *self = (const PackedByteArray *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptr()[p_index];
}

static GDExtensionTypePtr gdextension_packed_color_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedColorArray *self = (PackedColorArray *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptrw()[p_index];
}

static GDExtensionTypePtr gdextension_packed_color_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedColorArray *self = (const PackedColorArray *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptr()[p_index];
}

static float *gdextension_packed_float32_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedFloat32Array *self = (PackedFloat32Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptrw()[p_index];
}

static const float *gdextension_packed_float32_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedFloat32Array *self = (const PackedFloat32Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptr()[p_index];
}

static double *gdextension_packed_float64_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedFloat64Array *self = (PackedFloat64Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptrw()[p_index];
}

static const double *gdextension_packed_float64_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedFloat64Array *self = (const PackedFloat64Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptr()[p_index];
}

static int32_t *gdextension_packed_int32_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedInt32Array *self = (PackedInt32Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptrw()[p_index];
}

static const int32_t *gdextension_packed_int32_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedInt32Array *self = (const PackedInt32Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptr()[p_index];
}

static int64_t *gdextension_packed_int64_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedInt64Array *self = (PackedInt64Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptrw()[p_index];
}

static const int64_t *gdextension_packed_int64_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedInt64Array *self = (const PackedInt64Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return &self->ptr()[p_index];
}

static GDExtensionStringPtr gdextension_packed_string_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedStringArray *self = (PackedStringArray *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionStringPtr)&self->ptrw()[p_index];
}

static GDExtensionStringPtr gdextension_packed_string_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedStringArray *self = (const PackedStringArray *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionStringPtr)&self->ptr()[p_index];
}

static GDExtensionTypePtr gdextension_packed_vector2_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedVector2Array *self = (PackedVector2Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptrw()[p_index];
}

static GDExtensionTypePtr gdextension_packed_vector2_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedVector2Array *self = (const PackedVector2Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptr()[p_index];
}

static GDExtensionTypePtr gdextension_packed_vector3_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedVector3Array *self = (PackedVector3Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptrw()[p_index];
}

static GDExtensionTypePtr gdextension_packed_vector3_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedVector3Array *self = (const PackedVector3Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptr()[p_index];
}

static GDExtensionTypePtr gdextension_packed_vector4_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	PackedVector4Array *self = (PackedVector4Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptrw()[p_index];
}

static GDExtensionTypePtr gdextension_packed_vector4_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const PackedVector4Array *self = (const PackedVector4Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionTypePtr)&self->ptr()[p_index];
}

static GDExtensionVariantPtr gdextension_array_operator_index(GDExtensionTypePtr p_self, GDExtensionInt p_index) {
	Array *self = (Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionVariantPtr)&self->operator[](p_index);
}

static GDExtensionVariantPtr gdextension_array_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionInt p_index) {
	const Array *self = (const Array *)p_self;
	if (unlikely(p_index < 0 || p_index >= self->size())) {
		return nullptr;
	}
	return (GDExtensionVariantPtr)&self->operator[](p_index);
}

void gdextension_array_ref(GDExtensionTypePtr p_self, GDExtensionConstTypePtr p_from) {
	Array *self = (Array *)p_self;
	const Array *from = (const Array *)p_from;
	self->_ref(*from);
}

void gdextension_array_set_typed(GDExtensionTypePtr p_self, GDExtensionVariantType p_type, GDExtensionConstStringNamePtr p_class_name, GDExtensionConstVariantPtr p_script) {
	Array *self = reinterpret_cast<Array *>(p_self);
	const StringName *class_name = reinterpret_cast<const StringName *>(p_class_name);
	const Variant *script = reinterpret_cast<const Variant *>(p_script);
	self->set_typed((uint32_t)p_type, *class_name, *script);
}

/* Dictionary functions */

static GDExtensionVariantPtr gdextension_dictionary_operator_index(GDExtensionTypePtr p_self, GDExtensionConstVariantPtr p_key) {
	Dictionary *self = (Dictionary *)p_self;
	return (GDExtensionVariantPtr)&self->operator[](*(const Variant *)p_key);
}

static GDExtensionVariantPtr gdextension_dictionary_operator_index_const(GDExtensionConstTypePtr p_self, GDExtensionConstVariantPtr p_key) {
	const Dictionary *self = (const Dictionary *)p_self;
	return (GDExtensionVariantPtr)&self->operator[](*(const Variant *)p_key);
}

void gdextension_dictionary_set_typed(GDExtensionTypePtr p_self, GDExtensionVariantType p_key_type, GDExtensionConstStringNamePtr p_key_class_name, GDExtensionConstVariantPtr p_key_script, GDExtensionVariantType p_value_type, GDExtensionConstStringNamePtr p_value_class_name, GDExtensionConstVariantPtr p_value_script) {
	Dictionary *self = reinterpret_cast<Dictionary *>(p_self);
	const StringName *key_class_name = reinterpret_cast<const StringName *>(p_key_class_name);
	const Variant *key_script = reinterpret_cast<const Variant *>(p_key_script);
	const StringName *value_class_name = reinterpret_cast<const StringName *>(p_value_class_name);
	const Variant *value_script = reinterpret_cast<const Variant *>(p_value_script);
	self->set_typed((uint32_t)p_key_type, *key_class_name, *key_script, (uint32_t)p_value_type, *value_class_name, *value_script);
}

/* OBJECT API */

static void gdextension_object_method_bind_call(GDExtensionMethodBindPtr p_method_bind, GDExtensionObjectPtr p_instance, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_arg_count, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error) {
	const MethodBind *mb = reinterpret_cast<const MethodBind *>(p_method_bind);
	Object *o = (Object *)p_instance;
	const Variant **args = (const Variant **)p_args;
	Callable::CallError error;

	memnew_placement(r_return, Variant(mb->call(o, args, p_arg_count, error)));

	if (r_error) {
		r_error->error = (GDExtensionCallErrorType)(error.error);
		r_error->argument = error.argument;
		r_error->expected = error.expected;
	}
}

static void gdextension_object_method_bind_ptrcall(GDExtensionMethodBindPtr p_method_bind, GDExtensionObjectPtr p_instance, const GDExtensionConstTypePtr *p_args, GDExtensionTypePtr p_ret) {
	const MethodBind *mb = reinterpret_cast<const MethodBind *>(p_method_bind);
	Object *o = (Object *)p_instance;
	mb->ptrcall(o, (const void **)p_args, p_ret);
}

static void gdextension_object_destroy(GDExtensionObjectPtr p_o) {
	memdelete((Object *)p_o);
}

static GDExtensionObjectPtr gdextension_global_get_singleton(GDExtensionConstStringNamePtr p_name) {
	const StringName name = *reinterpret_cast<const StringName *>(p_name);
	return (GDExtensionObjectPtr)Engine::get_singleton()->get_singleton_object(name);
}

static void *gdextension_object_get_instance_binding(GDExtensionObjectPtr p_object, void *p_token, const GDExtensionInstanceBindingCallbacks *p_callbacks) {
	Object *o = (Object *)p_object;
	return o->get_instance_binding(p_token, p_callbacks);
}

static void gdextension_object_set_instance_binding(GDExtensionObjectPtr p_object, void *p_token, void *p_binding, const GDExtensionInstanceBindingCallbacks *p_callbacks) {
	Object *o = (Object *)p_object;
	o->set_instance_binding(p_token, p_binding, p_callbacks);
}

static void gdextension_object_free_instance_binding(GDExtensionObjectPtr p_object, void *p_token) {
	Object *o = (Object *)p_object;
	o->free_instance_binding(p_token);
}

static void gdextension_object_set_instance(GDExtensionObjectPtr p_object, GDExtensionConstStringNamePtr p_classname, GDExtensionClassInstancePtr p_instance) {
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	Object *o = (Object *)p_object;
	ClassDB::set_object_extension_instance(o, classname, p_instance);
}

static GDExtensionObjectPtr gdextension_object_get_instance_from_id(GDObjectInstanceID p_instance_id) {
	return (GDExtensionObjectPtr)ObjectDB::get_instance(ObjectID(p_instance_id));
}

static GDExtensionBool gdextension_object_get_class_name(GDExtensionConstObjectPtr p_object, GDExtensionClassLibraryPtr p_library, GDExtensionUninitializedStringNamePtr r_class_name) {
	if (!p_object) {
		return false;
	}
	const Object *o = (const Object *)p_object;

	memnew_placement(r_class_name, StringName);
	StringName *class_name = reinterpret_cast<StringName *>(r_class_name);
	*class_name = o->get_class_name_for_extension((GDExtension *)p_library);

	return true;
}

static GDExtensionObjectPtr gdextension_object_cast_to(GDExtensionConstObjectPtr p_object, void *p_class_tag) {
	if (!p_object) {
		return nullptr;
	}
	Object *o = (Object *)p_object;

	return o->is_class_ptr(p_class_tag) ? (GDExtensionObjectPtr)o : (GDExtensionObjectPtr) nullptr;
}

static GDObjectInstanceID gdextension_object_get_instance_id(GDExtensionConstObjectPtr p_object) {
	const Object *o = (const Object *)p_object;
	return (GDObjectInstanceID)o->get_instance_id();
}

static GDExtensionBool gdextension_object_has_script_method(GDExtensionConstObjectPtr p_object, GDExtensionConstStringNamePtr p_method) {
	Object *o = (Object *)p_object;
	const StringName method = *reinterpret_cast<const StringName *>(p_method);

	ScriptInstance *script_instance = o->get_script_instance();
	if (script_instance) {
		return script_instance->has_method(method);
	}
	return false;
}

static void gdextension_object_call_script_method(GDExtensionObjectPtr p_object, GDExtensionConstStringNamePtr p_method, const GDExtensionConstVariantPtr *p_args, GDExtensionInt p_argument_count, GDExtensionUninitializedVariantPtr r_return, GDExtensionCallError *r_error) {
	Object *o = (Object *)p_object;
	const StringName method = *reinterpret_cast<const StringName *>(p_method);
	const Variant **args = (const Variant **)p_args;

	Callable::CallError error; // TODO: Check `error`?
	memnew_placement(r_return, Variant);
	*(Variant *)r_return = o->callp(method, args, p_argument_count, error);

	if (r_error) {
		r_error->error = (GDExtensionCallErrorType)(error.error);
		r_error->argument = error.argument;
		r_error->expected = error.expected;
	}
}

static GDExtensionObjectPtr gdextension_ref_get_object(GDExtensionConstRefPtr p_ref) {
	const Ref<RefCounted> *ref = (const Ref<RefCounted> *)p_ref;
	if (ref == nullptr || ref->is_null()) {
		return (GDExtensionObjectPtr) nullptr;
	} else {
		return (GDExtensionObjectPtr)ref->ptr();
	}
}

static void gdextension_ref_set_object(GDExtensionRefPtr p_ref, GDExtensionObjectPtr p_object) {
	Ref<RefCounted> *ref = (Ref<RefCounted> *)p_ref;
	ERR_FAIL_NULL(ref);

	Object *o = (RefCounted *)p_object;
	ref->reference_ptr(o);
}

#ifndef DISABLE_DEPRECATED
static GDExtensionScriptInstancePtr gdextension_script_instance_create(const GDExtensionScriptInstanceInfo *p_info, GDExtensionScriptInstanceDataPtr p_instance_data) {
	GDExtensionScriptInstanceInfo3 *info_3 = memnew(GDExtensionScriptInstanceInfo3);
	info_3->set_func = p_info->set_func;
	info_3->get_func = p_info->get_func;
	info_3->get_property_list_func = p_info->get_property_list_func;
	info_3->free_property_list_func = nullptr;
	info_3->get_class_category_func = nullptr;
	info_3->property_can_revert_func = p_info->property_can_revert_func;
	info_3->property_get_revert_func = p_info->property_get_revert_func;
	info_3->get_owner_func = p_info->get_owner_func;
	info_3->get_property_state_func = p_info->get_property_state_func;
	info_3->get_method_list_func = p_info->get_method_list_func;
	info_3->free_method_list_func = nullptr;
	info_3->get_property_type_func = p_info->get_property_type_func;
	info_3->validate_property_func = nullptr;
	info_3->has_method_func = p_info->has_method_func;
	info_3->get_method_argument_count_func = nullptr;
	info_3->call_func = p_info->call_func;
	info_3->notification_func = nullptr;
	info_3->to_string_func = p_info->to_string_func;
	info_3->refcount_incremented_func = p_info->refcount_incremented_func;
	info_3->refcount_decremented_func = p_info->refcount_decremented_func;
	info_3->get_script_func = p_info->get_script_func;
	info_3->is_placeholder_func = p_info->is_placeholder_func;
	info_3->set_fallback_func = p_info->set_fallback_func;
	info_3->get_fallback_func = p_info->get_fallback_func;
	info_3->get_language_func = p_info->get_language_func;
	info_3->free_func = p_info->free_func;

	ScriptInstanceExtension *script_instance_extension = memnew(ScriptInstanceExtension);
	script_instance_extension->instance = p_instance_data;
	script_instance_extension->native_info = info_3;
	script_instance_extension->free_native_info = true;
	script_instance_extension->deprecated_native_info = memnew(ScriptInstanceExtension::DeprecatedNativeInfo);
	script_instance_extension->deprecated_native_info->notification_func = p_info->notification_func;
	script_instance_extension->deprecated_native_info->free_property_list_func = p_info->free_property_list_func;
	script_instance_extension->deprecated_native_info->free_method_list_func = p_info->free_method_list_func;
	return reinterpret_cast<GDExtensionScriptInstancePtr>(script_instance_extension);
}

static GDExtensionScriptInstancePtr gdextension_script_instance_create2(const GDExtensionScriptInstanceInfo2 *p_info, GDExtensionScriptInstanceDataPtr p_instance_data) {
	GDExtensionScriptInstanceInfo3 *info_3 = memnew(GDExtensionScriptInstanceInfo3);
	info_3->set_func = p_info->set_func;
	info_3->get_func = p_info->get_func;
	info_3->get_property_list_func = p_info->get_property_list_func;
	info_3->free_property_list_func = nullptr;
	info_3->get_class_category_func = nullptr;
	info_3->property_can_revert_func = p_info->property_can_revert_func;
	info_3->property_get_revert_func = p_info->property_get_revert_func;
	info_3->get_owner_func = p_info->get_owner_func;
	info_3->get_property_state_func = p_info->get_property_state_func;
	info_3->get_method_list_func = p_info->get_method_list_func;
	info_3->free_method_list_func = nullptr;
	info_3->get_property_type_func = p_info->get_property_type_func;
	info_3->validate_property_func = nullptr;
	info_3->has_method_func = p_info->has_method_func;
	info_3->get_method_argument_count_func = nullptr;
	info_3->call_func = p_info->call_func;
	info_3->notification_func = p_info->notification_func;
	info_3->to_string_func = p_info->to_string_func;
	info_3->refcount_incremented_func = p_info->refcount_incremented_func;
	info_3->refcount_decremented_func = p_info->refcount_decremented_func;
	info_3->get_script_func = p_info->get_script_func;
	info_3->is_placeholder_func = p_info->is_placeholder_func;
	info_3->set_fallback_func = p_info->set_fallback_func;
	info_3->get_fallback_func = p_info->get_fallback_func;
	info_3->get_language_func = p_info->get_language_func;
	info_3->free_func = p_info->free_func;

	ScriptInstanceExtension *script_instance_extension = memnew(ScriptInstanceExtension);
	script_instance_extension->instance = p_instance_data;
	script_instance_extension->native_info = info_3;
	script_instance_extension->free_native_info = true;
	script_instance_extension->deprecated_native_info = memnew(ScriptInstanceExtension::DeprecatedNativeInfo);
	script_instance_extension->deprecated_native_info->free_property_list_func = p_info->free_property_list_func;
	script_instance_extension->deprecated_native_info->free_method_list_func = p_info->free_method_list_func;
	return reinterpret_cast<GDExtensionScriptInstancePtr>(script_instance_extension);
}
#endif // DISABLE_DEPRECATED

static GDExtensionScriptInstancePtr gdextension_script_instance_create3(const GDExtensionScriptInstanceInfo3 *p_info, GDExtensionScriptInstanceDataPtr p_instance_data) {
	ScriptInstanceExtension *script_instance_extension = memnew(ScriptInstanceExtension);
	script_instance_extension->instance = p_instance_data;
	script_instance_extension->native_info = p_info;
	return reinterpret_cast<GDExtensionScriptInstancePtr>(script_instance_extension);
}

static GDExtensionScriptInstancePtr gdextension_placeholder_script_instance_create(GDExtensionObjectPtr p_language, GDExtensionObjectPtr p_script, GDExtensionObjectPtr p_owner) {
	ScriptLanguage *language = (ScriptLanguage *)p_language;
	Ref<Script> script;
	script.reference_ptr((Script *)p_script);
	Object *owner = (Object *)p_owner;

	PlaceHolderScriptInstance *placeholder = memnew(PlaceHolderScriptInstance(language, script, owner));
	return reinterpret_cast<GDExtensionScriptInstancePtr>(placeholder);
}

static void gdextension_placeholder_script_instance_update(GDExtensionScriptInstancePtr p_placeholder, GDExtensionConstTypePtr p_properties, GDExtensionConstTypePtr p_values) {
	PlaceHolderScriptInstance *placeholder = dynamic_cast<PlaceHolderScriptInstance *>(reinterpret_cast<ScriptInstance *>(p_placeholder));
	ERR_FAIL_NULL_MSG(placeholder, "Unable to update placeholder, expected a PlaceHolderScriptInstance but received an invalid type.");

	const Array &properties = *reinterpret_cast<const Array *>(p_properties);
	const Dictionary &values = *reinterpret_cast<const Dictionary *>(p_values);

	List<PropertyInfo> properties_list;
	HashMap<StringName, Variant> values_map;

	for (int i = 0; i < properties.size(); i++) {
		Dictionary d = properties[i];
		properties_list.push_back(PropertyInfo::from_dict(d));
	}

	List<Variant> keys;
	values.get_key_list(&keys);

	for (const Variant &E : keys) {
		values_map.insert(E, values[E]);
	}

	placeholder->update(properties_list, values_map);
}

static GDExtensionScriptInstancePtr gdextension_object_get_script_instance(GDExtensionConstObjectPtr p_object, GDExtensionConstObjectPtr p_language) {
	if (!p_object || !p_language) {
		return nullptr;
	}

	const Object *o = (const Object *)p_object;
	ScriptInstanceExtension *script_instance_extension = reinterpret_cast<ScriptInstanceExtension *>(o->get_script_instance());
	if (!script_instance_extension) {
		return nullptr;
	}

	const ScriptLanguage *language = script_instance_extension->get_language();
	if (language != p_language) {
		return nullptr;
	}

	return script_instance_extension->instance;
}

#ifndef DISABLE_DEPRECATED
static void gdextension_callable_custom_create(GDExtensionUninitializedTypePtr r_callable, GDExtensionCallableCustomInfo *p_custom_callable_info) {
	memnew_placement(r_callable, Callable(memnew(CallableCustomExtension(p_custom_callable_info))));
}
#endif

static void gdextension_callable_custom_create2(GDExtensionUninitializedTypePtr r_callable, GDExtensionCallableCustomInfo2 *p_custom_callable_info) {
	memnew_placement(r_callable, Callable(memnew(CallableCustomExtension(p_custom_callable_info))));
}

static void *gdextension_callable_custom_get_userdata(GDExtensionTypePtr p_callable, void *p_token) {
	const Callable &callable = *reinterpret_cast<const Callable *>(p_callable);
	if (!callable.is_custom()) {
		return nullptr;
	}
	const CallableCustomExtension *custom_callable = dynamic_cast<const CallableCustomExtension *>(callable.get_custom());
	if (!custom_callable) {
		return nullptr;
	}
	return custom_callable->get_userdata(p_token);
}

static GDExtensionMethodBindPtr gdextension_classdb_get_method_bind(GDExtensionConstStringNamePtr p_classname, GDExtensionConstStringNamePtr p_methodname, GDExtensionInt p_hash) {
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	const StringName methodname = *reinterpret_cast<const StringName *>(p_methodname);
	bool exists = false;
	MethodBind *mb = ClassDB::get_method_with_compatibility(classname, methodname, p_hash, &exists);

#ifndef DISABLE_DEPRECATED
	// If lookup failed, see if this is one of the broken hashes from issue #81386.
	if (!mb && exists) {
		uint32_t mapped_hash;
		if (GDExtensionSpecialCompatHashes::lookup_current_hash(classname, methodname, p_hash, &mapped_hash)) {
			mb = ClassDB::get_method_with_compatibility(classname, methodname, mapped_hash, &exists);
		}
	}
#endif

	if (!mb && exists) {
		ERR_PRINT(vformat("Method '%s.%s' has changed and no compatibility fallback has been provided. Please open an issue.", classname, methodname));
		return nullptr;
	}
	ERR_FAIL_NULL_V(mb, nullptr);
	return (GDExtensionMethodBindPtr)mb;
}

#ifndef DISABLE_DEPRECATED
static GDExtensionObjectPtr gdextension_classdb_construct_object(GDExtensionConstStringNamePtr p_classname) {
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	return (GDExtensionObjectPtr)ClassDB::instantiate_no_placeholders(classname);
}
#endif

static GDExtensionObjectPtr gdextension_classdb_construct_object2(GDExtensionConstStringNamePtr p_classname) {
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	return (GDExtensionObjectPtr)ClassDB::instantiate_without_postinitialization(classname);
}

static void *gdextension_classdb_get_class_tag(GDExtensionConstStringNamePtr p_classname) {
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	ClassDB::ClassInfo *class_info = ClassDB::classes.getptr(classname);
	return class_info ? class_info->class_ptr : nullptr;
}

static void gdextension_editor_add_plugin(GDExtensionConstStringNamePtr p_classname) {
#ifdef TOOLS_ENABLED
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	GDExtensionEditorPlugins::add_extension_class(classname);
#endif
}

static void gdextension_editor_remove_plugin(GDExtensionConstStringNamePtr p_classname) {
#ifdef TOOLS_ENABLED
	const StringName classname = *reinterpret_cast<const StringName *>(p_classname);
	GDExtensionEditorPlugins::remove_extension_class(classname);
#endif
}

static void gdextension_editor_help_load_xml_from_utf8_chars_and_len(const char *p_data, GDExtensionInt p_size) {
#ifdef TOOLS_ENABLED
	GDExtensionEditorHelp::load_xml_buffer((const uint8_t *)p_data, p_size);
#endif
}

static void gdextension_editor_help_load_xml_from_utf8_chars(const char *p_data) {
#ifdef TOOLS_ENABLED
	size_t len = strlen(p_data);
	gdextension_editor_help_load_xml_from_utf8_chars_and_len(p_data, len);
#endif
}

#define REGISTER_INTERFACE_FUNC(m_name) GDExtension::register_interface_function(#m_name, (GDExtensionInterfaceFunctionPtr) & gdextension_##m_name)

void gdextension_setup_interface() {
	REGISTER_INTERFACE_FUNC(get_godot_version);
	REGISTER_INTERFACE_FUNC(mem_alloc);
	REGISTER_INTERFACE_FUNC(mem_realloc);
	REGISTER_INTERFACE_FUNC(mem_free);
	REGISTER_INTERFACE_FUNC(print_error);
	REGISTER_INTERFACE_FUNC(print_error_with_message);
	REGISTER_INTERFACE_FUNC(print_warning);
	REGISTER_INTERFACE_FUNC(print_warning_with_message);
	REGISTER_INTERFACE_FUNC(print_script_error);
	REGISTER_INTERFACE_FUNC(print_script_error_with_message);
	REGISTER_INTERFACE_FUNC(get_native_struct_size);
	REGISTER_INTERFACE_FUNC(variant_new_copy);
	REGISTER_INTERFACE_FUNC(variant_new_nil);
	REGISTER_INTERFACE_FUNC(variant_destroy);
	REGISTER_INTERFACE_FUNC(variant_call);
	REGISTER_INTERFACE_FUNC(variant_call_static);
	REGISTER_INTERFACE_FUNC(variant_evaluate);
	REGISTER_INTERFACE_FUNC(variant_set);
	REGISTER_INTERFACE_FUNC(variant_set_named);
	REGISTER_INTERFACE_FUNC(variant_set_keyed);
	REGISTER_INTERFACE_FUNC(variant_set_indexed);
	REGISTER_INTERFACE_FUNC(variant_get);
	REGISTER_INTERFACE_FUNC(variant_get_named);
	REGISTER_INTERFACE_FUNC(variant_get_keyed);
	REGISTER_INTERFACE_FUNC(variant_get_indexed);
	REGISTER_INTERFACE_FUNC(variant_iter_init);
	REGISTER_INTERFACE_FUNC(variant_iter_next);
	REGISTER_INTERFACE_FUNC(variant_iter_get);
	REGISTER_INTERFACE_FUNC(variant_hash);
	REGISTER_INTERFACE_FUNC(variant_recursive_hash);
	REGISTER_INTERFACE_FUNC(variant_hash_compare);
	REGISTER_INTERFACE_FUNC(variant_booleanize);
	REGISTER_INTERFACE_FUNC(variant_duplicate);
	REGISTER_INTERFACE_FUNC(variant_stringify);
	REGISTER_INTERFACE_FUNC(variant_get_type);
	REGISTER_INTERFACE_FUNC(variant_has_method);
	REGISTER_INTERFACE_FUNC(variant_has_member);
	REGISTER_INTERFACE_FUNC(variant_has_key);
	REGISTER_INTERFACE_FUNC(variant_get_object_instance_id);
	REGISTER_INTERFACE_FUNC(variant_get_type_name);
	REGISTER_INTERFACE_FUNC(variant_can_convert);
	REGISTER_INTERFACE_FUNC(variant_can_convert_strict);
	REGISTER_INTERFACE_FUNC(get_variant_from_type_constructor);
	REGISTER_INTERFACE_FUNC(get_variant_to_type_constructor);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_internal_getter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_operator_evaluator);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_builtin_method);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_constructor);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_destructor);
	REGISTER_INTERFACE_FUNC(variant_construct);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_setter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_getter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_indexed_setter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_indexed_getter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_keyed_setter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_keyed_getter);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_keyed_checker);
	REGISTER_INTERFACE_FUNC(variant_get_constant_value);
	REGISTER_INTERFACE_FUNC(variant_get_ptr_utility_function);
	REGISTER_INTERFACE_FUNC(string_new_with_latin1_chars);
	REGISTER_INTERFACE_FUNC(string_new_with_utf8_chars);
	REGISTER_INTERFACE_FUNC(string_new_with_utf16_chars);
	REGISTER_INTERFACE_FUNC(string_new_with_utf32_chars);
	REGISTER_INTERFACE_FUNC(string_new_with_wide_chars);
	REGISTER_INTERFACE_FUNC(string_new_with_latin1_chars_and_len);
	REGISTER_INTERFACE_FUNC(string_new_with_utf8_chars_and_len);
	REGISTER_INTERFACE_FUNC(string_new_with_utf8_chars_and_len2);
	REGISTER_INTERFACE_FUNC(string_new_with_utf16_chars_and_len);
	REGISTER_INTERFACE_FUNC(string_new_with_utf16_chars_and_len2);
	REGISTER_INTERFACE_FUNC(string_new_with_utf32_chars_and_len);
	REGISTER_INTERFACE_FUNC(string_new_with_wide_chars_and_len);
	REGISTER_INTERFACE_FUNC(string_to_latin1_chars);
	REGISTER_INTERFACE_FUNC(string_to_utf8_chars);
	REGISTER_INTERFACE_FUNC(string_to_utf16_chars);
	REGISTER_INTERFACE_FUNC(string_to_utf32_chars);
	REGISTER_INTERFACE_FUNC(string_to_wide_chars);
	REGISTER_INTERFACE_FUNC(string_operator_index);
	REGISTER_INTERFACE_FUNC(string_operator_index_const);
	REGISTER_INTERFACE_FUNC(string_operator_plus_eq_string);
	REGISTER_INTERFACE_FUNC(string_operator_plus_eq_char);
	REGISTER_INTERFACE_FUNC(string_operator_plus_eq_cstr);
	REGISTER_INTERFACE_FUNC(string_operator_plus_eq_wcstr);
	REGISTER_INTERFACE_FUNC(string_operator_plus_eq_c32str);
	REGISTER_INTERFACE_FUNC(string_resize);
	REGISTER_INTERFACE_FUNC(string_name_new_with_latin1_chars);
	REGISTER_INTERFACE_FUNC(string_name_new_with_utf8_chars);
	REGISTER_INTERFACE_FUNC(string_name_new_with_utf8_chars_and_len);
	REGISTER_INTERFACE_FUNC(xml_parser_open_buffer);
	REGISTER_INTERFACE_FUNC(file_access_store_buffer);
	REGISTER_INTERFACE_FUNC(file_access_get_buffer);
	REGISTER_INTERFACE_FUNC(worker_thread_pool_add_native_group_task);
	REGISTER_INTERFACE_FUNC(worker_thread_pool_add_native_task);
	REGISTER_INTERFACE_FUNC(packed_byte_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_byte_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_color_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_color_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_float32_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_float32_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_float64_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_float64_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_int32_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_int32_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_int64_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_int64_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_string_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_string_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_vector2_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_vector2_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_vector3_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_vector3_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(packed_vector4_array_operator_index);
	REGISTER_INTERFACE_FUNC(packed_vector4_array_operator_index_const);
	REGISTER_INTERFACE_FUNC(array_operator_index);
	REGISTER_INTERFACE_FUNC(array_operator_index_const);
	REGISTER_INTERFACE_FUNC(array_ref);
	REGISTER_INTERFACE_FUNC(array_set_typed);
	REGISTER_INTERFACE_FUNC(dictionary_operator_index);
	REGISTER_INTERFACE_FUNC(dictionary_operator_index_const);
	REGISTER_INTERFACE_FUNC(dictionary_set_typed);
	REGISTER_INTERFACE_FUNC(object_method_bind_call);
	REGISTER_INTERFACE_FUNC(object_method_bind_ptrcall);
	REGISTER_INTERFACE_FUNC(object_destroy);
	REGISTER_INTERFACE_FUNC(global_get_singleton);
	REGISTER_INTERFACE_FUNC(object_get_instance_binding);
	REGISTER_INTERFACE_FUNC(object_set_instance_binding);
	REGISTER_INTERFACE_FUNC(object_free_instance_binding);
	REGISTER_INTERFACE_FUNC(object_set_instance);
	REGISTER_INTERFACE_FUNC(object_get_class_name);
	REGISTER_INTERFACE_FUNC(object_cast_to);
	REGISTER_INTERFACE_FUNC(object_get_instance_from_id);
	REGISTER_INTERFACE_FUNC(object_get_instance_id);
	REGISTER_INTERFACE_FUNC(object_has_script_method);
	REGISTER_INTERFACE_FUNC(object_call_script_method);
	REGISTER_INTERFACE_FUNC(ref_get_object);
	REGISTER_INTERFACE_FUNC(ref_set_object);
#ifndef DISABLE_DEPRECATED
	REGISTER_INTERFACE_FUNC(script_instance_create);
	REGISTER_INTERFACE_FUNC(script_instance_create2);
#endif // DISABLE_DEPRECATED
	REGISTER_INTERFACE_FUNC(script_instance_create3);
	REGISTER_INTERFACE_FUNC(placeholder_script_instance_create);
	REGISTER_INTERFACE_FUNC(placeholder_script_instance_update);
	REGISTER_INTERFACE_FUNC(object_get_script_instance);
#ifndef DISABLE_DEPRECATED
	REGISTER_INTERFACE_FUNC(callable_custom_create);
#endif // DISABLE_DEPRECATED
	REGISTER_INTERFACE_FUNC(callable_custom_create2);
	REGISTER_INTERFACE_FUNC(callable_custom_get_userdata);
#ifndef DISABLE_DEPRECATED
	REGISTER_INTERFACE_FUNC(classdb_construct_object);
#endif // DISABLE_DEPRECATED
	REGISTER_INTERFACE_FUNC(classdb_construct_object2);
	REGISTER_INTERFACE_FUNC(classdb_get_method_bind);
	REGISTER_INTERFACE_FUNC(classdb_get_class_tag);
	REGISTER_INTERFACE_FUNC(editor_add_plugin);
	REGISTER_INTERFACE_FUNC(editor_remove_plugin);
	REGISTER_INTERFACE_FUNC(editor_help_load_xml_from_utf8_chars);
	REGISTER_INTERFACE_FUNC(editor_help_load_xml_from_utf8_chars_and_len);
	REGISTER_INTERFACE_FUNC(image_ptrw);
	REGISTER_INTERFACE_FUNC(image_ptr);
}

#undef REGISTER_INTERFACE_FUNCTION