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31 lines
1,010 B
C
31 lines
1,010 B
C
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// SPDX-License-Identifier: GPL-2.0
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#ifndef STRUCTURED_LIST_H
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#define STRUCTURED_LIST_H
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/* Clear everything but the first element;
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* this works for taglist, picturelist, even dive computers */
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#define STRUCTURED_LIST_FREE(_type, _start, _free) \
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{ \
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_type *_ptr = _start; \
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while (_ptr) { \
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_type *_next = _ptr->next; \
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_free(_ptr); \
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_ptr = _next; \
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} \
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}
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#define STRUCTURED_LIST_COPY(_type, _first, _dest, _cpy) \
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{ \
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_type *_sptr = _first; \
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_type **_dptr = &_dest; \
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while (_sptr) { \
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*_dptr = malloc(sizeof(_type)); \
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_cpy(_sptr, *_dptr); \
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_sptr = _sptr->next; \
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_dptr = &(*_dptr)->next; \
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} \
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*_dptr = 0; \
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}
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#endif
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