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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2022 by Blender Foundation.
*/
#include "DNA_ID.h"
#include "BKE_idtype.h"
#include "BKE_lib_id.h"
#include "BKE_lib_remap.h"
#include "MEM_guardedalloc.h"
#include "BLI_map.hh"
using IDTypeFilter = uint64_t;
namespace blender::bke::id::remapper {
struct IDRemapper {
private:
Map<ID *, ID *> mappings;
IDTypeFilter source_types = 0;
public:
void clear()
{
mappings.clear();
source_types = 0;
}
bool is_empty() const
{
return mappings.is_empty();
}
void add(ID *old_id, ID *new_id)
{
BLI_assert(old_id != nullptr);
BLI_assert(new_id == nullptr || (GS(old_id->name) == GS(new_id->name)));
mappings.add(old_id, new_id);
source_types |= BKE_idtype_idcode_to_idfilter(GS(old_id->name));
}
bool contains_mappings_for_any(IDTypeFilter filter) const
{
return (source_types & filter) != 0;
}
IDRemapperApplyResult apply(ID **r_id_ptr, IDRemapperApplyOptions options) const
{
BLI_assert(r_id_ptr != nullptr);
if (*r_id_ptr == nullptr) {
return ID_REMAP_RESULT_SOURCE_NOT_MAPPABLE;
}
if (!mappings.contains(*r_id_ptr)) {
return ID_REMAP_RESULT_SOURCE_UNAVAILABLE;
}
if (options & ID_REMAP_APPLY_UPDATE_REFCOUNT) {
id_us_min(*r_id_ptr);
}
*r_id_ptr = mappings.lookup(*r_id_ptr);
if (*r_id_ptr == nullptr) {
return ID_REMAP_RESULT_SOURCE_UNASSIGNED;
}
if (options & ID_REMAP_APPLY_UPDATE_REFCOUNT) {
id_us_plus(*r_id_ptr);
}
if (options & ID_REMAP_APPLY_ENSURE_REAL) {
id_us_ensure_real(*r_id_ptr);
}
return ID_REMAP_RESULT_SOURCE_REMAPPED;
}
void iter(IDRemapperIterFunction func, void *user_data) const
{
for (auto item : mappings.items()) {
func(item.key, item.value, user_data);
}
}
};
} // namespace blender::bke::id::remapper
/** \brief wrap CPP IDRemapper to a C handle. */
static IDRemapper *wrap(blender::bke::id::remapper::IDRemapper *remapper)
{
return static_cast<IDRemapper *>(static_cast<void *>(remapper));
}
/** \brief wrap C handle to a CPP IDRemapper. */
static blender::bke::id::remapper::IDRemapper *unwrap(IDRemapper *remapper)
{
return static_cast<blender::bke::id::remapper::IDRemapper *>(static_cast<void *>(remapper));
}
/** \brief wrap C handle to a CPP IDRemapper. */
static const blender::bke::id::remapper::IDRemapper *unwrap(const IDRemapper *remapper)
{
return static_cast<const blender::bke::id::remapper::IDRemapper *>(
static_cast<const void *>(remapper));
}
extern "C" {
IDRemapper *BKE_id_remapper_create(void)
{
blender::bke::id::remapper::IDRemapper *remapper =
MEM_new<blender::bke::id::remapper::IDRemapper>(__func__);
return wrap(remapper);
}
void BKE_id_remapper_free(IDRemapper *id_remapper)
{
blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
MEM_delete<blender::bke::id::remapper::IDRemapper>(remapper);
}
void BKE_id_remapper_clear(struct IDRemapper *id_remapper)
{
blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
remapper->clear();
}
bool BKE_id_remapper_is_empty(const struct IDRemapper *id_remapper)
{
const blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
return remapper->is_empty();
}
void BKE_id_remapper_add(IDRemapper *id_remapper, ID *old_id, ID *new_id)
{
blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
remapper->add(old_id, new_id);
}
bool BKE_id_remapper_has_mapping_for(const struct IDRemapper *id_remapper, uint64_t type_filter)
{
const blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
return remapper->contains_mappings_for_any(type_filter);
}
IDRemapperApplyResult BKE_id_remapper_apply(const IDRemapper *id_remapper,
ID **r_id_ptr,
const IDRemapperApplyOptions options)
{
const blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
return remapper->apply(r_id_ptr, options);
}
void BKE_id_remapper_iter(const struct IDRemapper *id_remapper,
IDRemapperIterFunction func,
void *user_data)
{
const blender::bke::id::remapper::IDRemapper *remapper = unwrap(id_remapper);
remapper->iter(func, user_data);
}
}
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