Function sz_py_replace_u64_tape_view_allocator

python/stringzilla.c:709–745

}

static sz_bool_t sz_py_replace_u64_tape_view_allocator(Strs *strs, sz_memory_allocator_t *allocator) {
    // Convert view to tape by copying the data
    struct u64_tape_view_t *view = &strs->data.u64_tape_view;
    sz_u64_t const slice_start_offset = view->offsets[0];
    sz_size_t const string_data_size = (sz_size_t)(view->offsets[view->count] - slice_start_offset);
    sz_size_t const offsets_size = (view->count + 1) * sizeof(sz_u64_t);

    // Allocate new string data with new allocator
    sz_ptr_t new_string_data = NULL;
    if (string_data_size > 0) {
        new_string_data = (sz_ptr_t)allocator->allocate(string_data_size, allocator->handle);
        if (!new_string_data) return sz_false_k;
        memcpy(new_string_data, view->data + slice_start_offset, string_data_size);
    }

    // Allocate new offsets array and adjust to be relative to slice start
    sz_u64_t *new_offsets = NULL;
    if (offsets_size > 0) {
        new_offsets = (sz_u64_t *)allocator->allocate(offsets_size, allocator->handle);
        if (!new_offsets) {
            if (string_data_size > 0) allocator->free(new_string_data, string_data_size, allocator->handle);
            return sz_false_k;
        }
        for (sz_size_t i = 0; i <= view->count; ++i) new_offsets[i] = view->offsets[i] - slice_start_offset;
    }

    // Release parent reference if any
    Py_XDECREF(view->parent);

    // Convert to tape layout
    strs->layout = STRS_U64_TAPE;
    strs->data.u64_tape.count = view->count;
    strs->data.u64_tape.data = new_string_data;
    strs->data.u64_tape.offsets = new_offsets;
    strs->data.u64_tape.allocator = *allocator;
    return sz_true_k;
}

static sz_bool_t sz_py_replace_fragmented_allocator(Strs *strs, sz_memory_allocator_t *old_allocator,
                                                    sz_memory_allocator_t *allocator) {