_getStacks()

in Hands-on lab/lab-files/starter-project/NorthwindMVC/wwwroot/lib/Chart.js/chart.js [7632:7666]

• 35 lines of code
• 12 McCabe index (conditional complexity)

  _getStacks(last, dataIndex) {
    const me = this;
    const meta = me._cachedMeta;
    const iScale = meta.iScale;
    const metasets = iScale.getMatchingVisibleMetas(me._type);
    const stacked = iScale.options.stacked;
    const ilen = metasets.length;
    const stacks = [];
    let i, item;
    for (i = 0; i < ilen; ++i) {
      item = metasets[i];
      if (!item.controller.options.grouped) {
        continue;
      }
      if (typeof dataIndex !== 'undefined') {
        const val = item.controller.getParsed(dataIndex)[
          item.controller._cachedMeta.vScale.axis
        ];
        if (isNullOrUndef(val) || isNaN(val)) {
          continue;
        }
      }
      if (stacked === false || stacks.indexOf(item.stack) === -1 ||
				(stacked === undefined && item.stack === undefined)) {
        stacks.push(item.stack);
      }
      if (item.index === last) {
        break;
      }
    }
    if (!stacks.length) {
      stacks.push(undefined);
    }
    return stacks;
  }