64 lines
3.4 KiB
C++
64 lines
3.4 KiB
C++
/*************************************************************************/
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/* object_id.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 OBJECT_ID_H
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#define OBJECT_ID_H
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#include "core/typedefs.h"
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// Class to store an object ID (int64)
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// needs to be compatile with int64 because this is what Variant uses
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// Also, need to be explicitly only castable to 64 bits integer types
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// to avoid bugs due to loss of precision
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class ObjectID {
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uint64_t id = 0;
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public:
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_ALWAYS_INLINE_ bool is_ref_counted() const { return (id & (uint64_t(1) << 63)) != 0; }
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_ALWAYS_INLINE_ bool is_valid() const { return id != 0; }
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_ALWAYS_INLINE_ bool is_null() const { return id == 0; }
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_ALWAYS_INLINE_ operator uint64_t() const { return id; }
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_ALWAYS_INLINE_ operator int64_t() const { return id; }
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_ALWAYS_INLINE_ bool operator==(const ObjectID &p_id) const { return id == p_id.id; }
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_ALWAYS_INLINE_ bool operator!=(const ObjectID &p_id) const { return id != p_id.id; }
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_ALWAYS_INLINE_ bool operator<(const ObjectID &p_id) const { return id < p_id.id; }
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_ALWAYS_INLINE_ void operator=(int64_t p_int64) { id = p_int64; }
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_ALWAYS_INLINE_ void operator=(uint64_t p_uint64) { id = p_uint64; }
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_ALWAYS_INLINE_ ObjectID() {}
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_ALWAYS_INLINE_ explicit ObjectID(const uint64_t p_id) { id = p_id; }
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_ALWAYS_INLINE_ explicit ObjectID(const int64_t p_id) { id = p_id; }
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};
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#endif // OBJECT_ID_H
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