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Implement rb_darray_swap_remove

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This commit is contained in:
Peter Zhu 2025-01-21 11:38:01 -05:00
parent 099da884fe
commit 16626d500d
Notes: git 2025-12-25 14:19:02 +00:00 
Merged: https://github.com/ruby/ruby/pull/12606
1 changed files with 14 additions and 0 deletions
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14
darray.h
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@ -72,6 +72,20 @@
(*(ptr_to_ary))->meta.size++; \
} while (0)
/* Removes the element at idx and replaces it with the last element.
* ptr_to_ary and idx is evaluated multiple times.
* Warning: not bounds checked.
*
* void rb_darray_swap_remove(rb_darray(T) *ptr_to_ary, size_t idx);
*/
#define rb_darray_swap_remove(ptr_to_ary, idx) do { \
size_t _darray_size = rb_darray_size(*(ptr_to_ary)); \
if ((idx) != _darray_size - 1) { \
(*(ptr_to_ary))->data[idx] = (*(ptr_to_ary))->data[_darray_size - 1]; \
} \
(*(ptr_to_ary))->meta.size--; \
} while (0)
// Iterate over items of the array in a for loop
//
#define rb_darray_foreach(ary, idx_name, elem_ptr_var) \