74 lines
2.7 KiB
C
74 lines
2.7 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bke
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*
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* API to generate and use a mapping from [ID type & name] to [id pointer], within a given Main
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* data-base.
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*
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* \note `BKE_main` files are for operations over the Main database itself, or generating extra
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* temp data to help working with it. Those should typically not affect the data-blocks themselves.
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*
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* \section Function Names
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*
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* - `BKE_main_idmap_` Should be used for functions in that file.
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*/
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#include "BLI_compiler_attrs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct ID;
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struct IDNameLib_Map;
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struct Main;
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enum {
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MAIN_IDMAP_TYPE_NAME = 1 << 0,
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MAIN_IDMAP_TYPE_UUID = 1 << 1,
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};
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/**
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* Generate mapping from ID type/name to ID pointer for given \a bmain.
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*
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* \note When used during undo/redo, there is no guaranty that ID pointers from UI area are not
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* pointing to freed memory (when some IDs have been deleted). To avoid crashes in those cases, one
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* can provide the 'old' (aka current) Main database as reference. #BKE_main_idmap_lookup_id will
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* then check that given ID does exist in \a old_bmain before trying to use it.
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*
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* \param create_valid_ids_set: If \a true, generate a reference to prevent freed memory accesses.
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* \param old_bmain: If not NULL, its IDs will be added the valid references set.
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*/
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struct IDNameLib_Map *BKE_main_idmap_create(struct Main *bmain,
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bool create_valid_ids_set,
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struct Main *old_bmain,
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int idmap_types) ATTR_WARN_UNUSED_RESULT
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ATTR_NONNULL(1);
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void BKE_main_idmap_destroy(struct IDNameLib_Map *id_map) ATTR_NONNULL();
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void BKE_main_idmap_insert_id(struct IDNameLib_Map *id_map, struct ID *id) ATTR_NONNULL();
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void BKE_main_idmap_remove_id(struct IDNameLib_Map *id_map, struct ID *id) ATTR_NONNULL();
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struct Main *BKE_main_idmap_main_get(struct IDNameLib_Map *id_map) ATTR_WARN_UNUSED_RESULT
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ATTR_NONNULL();
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struct ID *BKE_main_idmap_lookup_name(struct IDNameLib_Map *id_map,
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short id_type,
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const char *name,
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const struct Library *lib) ATTR_WARN_UNUSED_RESULT
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ATTR_NONNULL(1, 3);
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struct ID *BKE_main_idmap_lookup_id(struct IDNameLib_Map *id_map,
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const struct ID *id) ATTR_WARN_UNUSED_RESULT
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ATTR_NONNULL(1, 2);
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struct ID *BKE_main_idmap_lookup_uuid(struct IDNameLib_Map *id_map,
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uint session_uuid) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
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#ifdef __cplusplus
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}
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#endif
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