Function cloneRawData

src/data/helper/transform.ts:276–304

(upstream: Source)

}

function cloneRawData(upstream: Source): Source['data'] {
    const sourceFormat = upstream.sourceFormat;
    const data = upstream.data;

    if (!isSupportedSourceFormat(sourceFormat)) {
        let errMsg = '';
        if (__DEV__) {
            errMsg = '`cloneRawData` is not supported in source format ' + sourceFormat;
        }
        throwError(errMsg);
    }

    if (sourceFormat === SOURCE_FORMAT_ARRAY_ROWS) {
        const result = [];
        for (let i = 0, len = data.length; i < len; i++) {
            // Not strictly clone for performance
            result.push((data as OptionSourceDataArrayRows)[i].slice());
        }
        return result;
    }
    else if (sourceFormat === SOURCE_FORMAT_OBJECT_ROWS) {
        const result = [];
        for (let i = 0, len = data.length; i < len; i++) {
            // Not strictly clone for performance
            result.push(extend({}, (data as OptionSourceDataObjectRows)[i]));
        }
        return result;
    }
}

function getDimensionInfo(
    dimensions: ExternalDimensionDefinition[],