comparison: src/list.c
src/list.c
- changeset 1436
- c331add0d9f8
- parent 1433
- 81c301a59b7c
equal
deleted
inserted
replaced
| 1435:48ebf22b698e | 1436:c331add0d9f8 |
|---|---|
| 802 | 802 |
| 803 void cxListFree(CxList *list) { | 803 void cxListFree(CxList *list) { |
| 804 if (list == NULL) return; | 804 if (list == NULL) return; |
| 805 list->cl->deallocate(list); | 805 list->cl->deallocate(list); |
| 806 } | 806 } |
| 807 | |
| 808 size_t cxListClone(CxList *dst, const CxList *src, cx_clone_func clone_func, | |
| 809 const CxAllocator *clone_allocator, void *data) { | |
| 810 | |
| 811 // remember the original size | |
| 812 size_t orig_size = dst->collection.size; | |
| 813 | |
| 814 // first, try to allocate the memory in the new list | |
| 815 CxIterator empl_iter = cxListEmplaceArray(dst, src->collection.size); | |
| 816 | |
| 817 // get an iterator over the source elements | |
| 818 CxIterator src_iter = cxListIterator(src); | |
| 819 | |
| 820 // now clone the elements | |
| 821 size_t cloned = empl_iter.elem_count; | |
| 822 if (cxCollectionStoresPointers(dst)) { | |
| 823 for (size_t i = 0 ; i < empl_iter.elem_count; i++) { | |
| 824 void *src_elem = cxIteratorCurrent(src_iter); | |
| 825 void **dest_memory = cxIteratorCurrent(empl_iter); | |
| 826 void *dest_ptr = clone_func(NULL, src_elem, clone_allocator, data); | |
| 827 if (dest_ptr == NULL) { | |
| 828 cloned = i; | |
| 829 break; | |
| 830 } | |
| 831 *dest_memory = dest_ptr; | |
| 832 cxIteratorNext(src_iter); | |
| 833 cxIteratorNext(empl_iter); | |
| 834 } | |
| 835 } else { | |
| 836 for (size_t i = 0 ; i < empl_iter.elem_count; i++) { | |
| 837 void *src_elem = cxIteratorCurrent(src_iter); | |
| 838 void *dest_memory = cxIteratorCurrent(empl_iter); | |
| 839 if (clone_func(dest_memory, src_elem, clone_allocator, data) == NULL) { | |
| 840 cloned = i; | |
| 841 break; | |
| 842 } | |
| 843 cxIteratorNext(src_iter); | |
| 844 cxIteratorNext(empl_iter); | |
| 845 } | |
| 846 } | |
| 847 | |
| 848 // if we could not clone everything, free the allocated memory | |
| 849 // (disable the destructors!) | |
| 850 if (cloned < src->collection.size) { | |
| 851 cx_destructor_func destr_bak = dst->collection.simple_destructor; | |
| 852 cx_destructor_func2 destr2_bak = dst->collection.advanced_destructor; | |
| 853 dst->collection.simple_destructor = NULL; | |
| 854 dst->collection.advanced_destructor = NULL; | |
| 855 cxListRemoveArray(dst, | |
| 856 orig_size + cloned, | |
| 857 dst->collection.size - cloned - orig_size); | |
| 858 dst->collection.simple_destructor = destr_bak; | |
| 859 dst->collection.advanced_destructor = destr2_bak; | |
| 860 } | |
| 861 | |
| 862 // return how many elements we have cloned | |
| 863 return cloned; | |
| 864 } |
