static inline int adjust_index_rw(strarray_t *sa, int idx, int len)
{
if (idx >= sa->count) {
ensure_alloc(sa, idx+len);
} else if (idx < 0) {
idx += sa->count;
if (idx >= 0 && len)
ensure_alloc(sa, sa->count+len);
} else if (len) {
ensure_alloc(sa, sa->count+len);
}
return idx;
}
/*
* Like adjust_index_ro(), with extra complication that the function
* we're performing will expand the array if either the adjusted index
* points outside the current bounds of the array, or @grow tells us
* that we're about to need more space in the array.
*/
static inline int adjust_index_rw(strarray_t *sa, int idx, int grow)
{
if (idx >= sa->count) {
/* expanding the array as a side effect @idx pointing
* outside the current bounds, plus perhaps @grow */
ensure_alloc(sa, idx+grow);
} else if (idx < 0) {
/* adjust Perl-style negative indeces */
idx += sa->count;
if (idx >= 0 && grow)
ensure_alloc(sa, sa->count+grow);
} else if (grow) {
/* expanding the array due to an insert or append */
ensure_alloc(sa, sa->count+grow);
}
return idx;
}