Function makeSeriesEncodeForNameBased

libs/echarts/echarts.simple.js:20990–21077

* Work for data like [{name: ..., value: ...}, ...]. * * @param {module:model/Series} seriesModel * @param {module:data/Source} source * @return {Object} encode Never be `null/undefined`.

(seriesModel, source, dimCount)

 * @return {Object} encode Never be `null/undefined`.
 */
function makeSeriesEncodeForNameBased(seriesModel, source, dimCount) {
    var encode = {};

    var datasetModel = getDatasetModel(seriesModel);
    // Currently only make default when using dataset, util more reqirements occur.
    if (!datasetModel) {
        return encode;
    }

    var sourceFormat = source.sourceFormat;
    var dimensionsDefine = source.dimensionsDefine;

    var potentialNameDimIndex;
    if (sourceFormat === SOURCE_FORMAT_OBJECT_ROWS || sourceFormat === SOURCE_FORMAT_KEYED_COLUMNS) {
        each$1(dimensionsDefine, function (dim, idx) {
            if ((isObject$1(dim) ? dim.name : dim) === 'name') {
                potentialNameDimIndex = idx;
            }
        });
    }

    // idxResult: {v, n}.
    var idxResult = (function () {

        var idxRes0 = {};
        var idxRes1 = {};
        var guessRecords = [];

        // 5 is an experience value.
        for (var i = 0, len = Math.min(5, dimCount); i < len; i++) {
            var guessResult = doGuessOrdinal(
                source.data, sourceFormat, source.seriesLayoutBy,
                dimensionsDefine, source.startIndex, i
            );
            guessRecords.push(guessResult);
            var isPureNumber = guessResult === BE_ORDINAL.Not;

            // [Strategy of idxRes0]: find the first BE_ORDINAL.Not as the value dim,
            // and then find a name dim with the priority:
            // "BE_ORDINAL.Might|BE_ORDINAL.Must" > "other dim" > "the value dim itself".
            if (isPureNumber && idxRes0.v == null && i !== potentialNameDimIndex) {
                idxRes0.v = i;
            }
            if (idxRes0.n == null
                || (idxRes0.n === idxRes0.v)
                || (!isPureNumber && guessRecords[idxRes0.n] === BE_ORDINAL.Not)
            ) {
                idxRes0.n = i;
            }
            if (fulfilled(idxRes0) && guessRecords[idxRes0.n] !== BE_ORDINAL.Not) {
                return idxRes0;
            }

            // [Strategy of idxRes1]: if idxRes0 not satisfied (that is, no BE_ORDINAL.Not),
            // find the first BE_ORDINAL.Might as the value dim,
            // and then find a name dim with the priority:
            // "other dim" > "the value dim itself".
            // That is for backward compat: number-like (e.g., `'3'`, `'55'`) can be