mirror of
https://github.com/godotengine/godot
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f8ab79e68a
This prevents the pitfall of UB when checking if they have been assigned something valid by comparing to nullptr.
88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
/*************************************************************************/
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/* resource_uid.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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 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 RESOURCE_UUID_H
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#define RESOURCE_UUID_H
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#include "core/object/ref_counted.h"
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#include "core/string/string_name.h"
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#include "core/templates/ordered_hash_map.h"
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class ResourceUID : public Object {
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GDCLASS(ResourceUID, Object)
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public:
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typedef int64_t ID;
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enum {
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INVALID_ID = -1
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};
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static String get_cache_file();
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private:
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void *crypto = nullptr; // CryptoCore::RandomGenerator (avoid including crypto_core.h)
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Mutex mutex;
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struct Cache {
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CharString cs;
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bool saved_to_cache = false;
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};
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OrderedHashMap<ID, Cache> unique_ids; //unique IDs and utf8 paths (less memory used)
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static ResourceUID *singleton;
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uint32_t cache_entries = 0;
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bool changed = false;
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protected:
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static void _bind_methods();
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public:
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String id_to_text(ID p_id) const;
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ID text_to_id(const String &p_text) const;
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ID create_id();
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bool has_id(ID p_id) const;
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void add_id(ID p_id, const String &p_path);
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void set_id(ID p_id, const String &p_path);
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String get_id_path(ID p_id) const;
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void remove_id(ID p_id);
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Error load_from_cache();
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Error save_to_cache();
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Error update_cache();
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void clear();
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static ResourceUID *get_singleton() { return singleton; }
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ResourceUID();
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~ResourceUID();
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};
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#endif // RESOURCEUUID_H
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