Campbell Barton
71da3f31d4
Share macro for setting BLI_Iterator defaults to ensure
this doesn't happen again in cases the ITER_* macros aren't used.
Oversight in 14d74fb341.
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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/** \file
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* \ingroup bli
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct BLI_Iterator {
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void *current; /* current pointer we iterate over */
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void *data; /* stored data required for this iterator */
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bool skip;
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bool valid;
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} BLI_Iterator;
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typedef void (*IteratorCb)(BLI_Iterator *iter);
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typedef void (*IteratorBeginCb)(BLI_Iterator *iter, void *data_in);
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#define BLI_ITERATOR_INIT(iter) \
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{ \
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(iter)->skip = false; \
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(iter)->valid = true; \
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} \
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((void)0)
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#define ITER_BEGIN(callback_begin, callback_next, callback_end, _data_in, _type, _instance) \
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{ \
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_type _instance; \
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IteratorCb callback_end_func = callback_end; \
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BLI_Iterator iter_macro; \
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BLI_ITERATOR_INIT(&iter_macro); \
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for (callback_begin(&iter_macro, (_data_in)); iter_macro.valid; callback_next(&iter_macro)) { \
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if (iter_macro.skip) { \
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iter_macro.skip = false; \
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continue; \
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} \
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_instance = (_type)iter_macro.current;
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#define ITER_END \
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} \
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callback_end_func(&iter_macro); \
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} \
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((void)0)
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#ifdef __cplusplus
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}
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#endif
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