static IterCellsPolygonCompact _iterInitPolygonCompact()

in h3_polyfill.c [324:358]
27 lines of code
4 McCabe index (conditional complexity)

static IterCellsPolygonCompact _iterInitPolygonCompact(
    const GeoPolygon *polygon, int res, uint32_t flags) {
    IterCellsPolygonCompact iter = {// Initialize output properties. The first
                                    // valid cell will be set in iterStep
                                    .cell = baseCellNumToCell(0),
                                    .error = E_SUCCESS,
                                    // Save input arguments
                                    ._polygon = polygon,
                                    ._res = res,
                                    ._flags = flags,
                                    ._bboxes = NULL,
                                    ._started = false};

    if (res < 0 || res > MAX_H3_RES) {
        iterErrorPolygonCompact(&iter, E_RES_DOMAIN);
        return iter;
    }

    H3Error flagErr = validatePolygonFlags(flags);
    if (flagErr) {
        iterErrorPolygonCompact(&iter, flagErr);
        return iter;
    }

    // Initialize bounding boxes for polygon and any holes. Memory allocated
    // here must be released through iterDestroyPolygonCompact
    iter._bboxes = H3_MEMORY(calloc)((polygon->numHoles + 1), sizeof(BBox));
    if (!iter._bboxes) {
        iterErrorPolygonCompact(&iter, E_MEMORY_ALLOC);
        return iter;
    }
    bboxesFromGeoPolygon(polygon, iter._bboxes);

    return iter;
}