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Diffstat (limited to 'core/object/object_id.h')
| -rw-r--r-- | core/object/object_id.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/core/object/object_id.h b/core/object/object_id.h new file mode 100644 index 0000000000..63b0c27af8 --- /dev/null +++ b/core/object/object_id.h @@ -0,0 +1,63 @@ +/*************************************************************************/ +/* object_id.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#ifndef OBJECT_ID_H +#define OBJECT_ID_H + +#include "core/typedefs.h" + +// Class to store an object ID (int64) +// needs to be compatile with int64 because this is what Variant uses +// Also, need to be explicitly only castable to 64 bits integer types +// to avoid bugs due to loss of precision + +class ObjectID { + uint64_t id = 0; + +public: + _ALWAYS_INLINE_ bool is_reference() const { return (id & (uint64_t(1) << 63)) != 0; } + _ALWAYS_INLINE_ bool is_valid() const { return id != 0; } + _ALWAYS_INLINE_ bool is_null() const { return id == 0; } + _ALWAYS_INLINE_ operator uint64_t() const { return id; } + _ALWAYS_INLINE_ operator int64_t() const { return id; } + + _ALWAYS_INLINE_ bool operator==(const ObjectID &p_id) const { return id == p_id.id; } + _ALWAYS_INLINE_ bool operator!=(const ObjectID &p_id) const { return id != p_id.id; } + _ALWAYS_INLINE_ bool operator<(const ObjectID &p_id) const { return id < p_id.id; } + + _ALWAYS_INLINE_ void operator=(int64_t p_int64) { id = p_int64; } + _ALWAYS_INLINE_ void operator=(uint64_t p_uint64) { id = p_uint64; } + + _ALWAYS_INLINE_ ObjectID() {} + _ALWAYS_INLINE_ explicit ObjectID(const uint64_t p_id) { id = p_id; } + _ALWAYS_INLINE_ explicit ObjectID(const int64_t p_id) { id = p_id; } +}; + +#endif // OBJECT_ID_H |