fn drop(&mut self) {
unsafe {
let vec = (*self.string).as_mut_vec();
- let range_len = self.end - self.start;
- let replacement_len = self.replace_with.len();
- let tail_len = vec.len() - self.end;
- if replacement_len > range_len {
- vec.reserve(replacement_len - range_len);
- }
- if replacement_len != range_len {
- let src = vec.as_ptr().offset(self.end as isize);
- let dst = vec.as_mut_ptr().offset((self.start + replacement_len) as isize);
- ptr::copy(src, dst, tail_len);
- }
- let src = self.replace_with.as_ptr();
- let dst = vec.as_mut_ptr().offset(self.start as isize);
- ptr::copy(src, dst, replacement_len);
- vec.set_len(self.start + replacement_len + tail_len);
+ vec.splice(self.start..self.end, self.replace_with.bytes());
}
}
}