yjtgq-app/node_modules/echarts/lib/data/OrdinalMeta.js

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/


/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import { createHashMap, isObject, map, isString } from 'zrender/lib/core/util.js';
var uidBase = 0;
var OrdinalMeta = /** @class */function () {
  /**
   * PENDING - Regarding forcibly converting to string:
   *  In the early days, the underlying hash map impl used JS plain object and converted the key to
   *  string; later in https://github.com/ecomfe/zrender/pull/966 it was changed to a JS Map (in supported
   *  platforms), which does not require string keys. But consider any input that `scale/Ordinal['parse']`
   *  is involved, a number input represents an `OrdinalNumber` (i.e., an index), and affect the query
   *  behavior:
   *    - If forcbily converting to string:
   *      pros: users can use numeric string (such as, '123') to query the raw data (123), tho it's probably
   *      still confusing.
   *      cons: NaN/null/undefined in data will be equals to 'NaN'/'null'/'undefined', if simply using
   *      `val + ''` to convert them, like currently `getName` does.
   *    - Otherwise:
   *      pros: see NaN/null/undefined case above.
   *      cons: users cannot query the raw data (123) any more.
   *  There are two inconsistent behaviors in the current impl:
   *    - Force conversion is applied on the case `xAxis{data: ['aaa', 'bbb', ...]}`,
   *      but no conversion applied to the case `xAxis{data: [{value: 'aaa'}, ...]}` and
   *      the case `dataset: {source: [['aaa', 123], ['bbb', 234], ...]}`.
   *    - behaves differently according to whether JS Map is supported (the polyfill is simply using JS
   *      plain object) (tho it seems rare platform that do not support it).
   *  Since there's no sufficient good solution to offset cost of the breaking change, we preserve the
   *  current behavior, until real issues is reported.
   */
  function OrdinalMeta(opt) {
    this.categories = opt.categories || [];
    this._needCollect = opt.needCollect;
    this._deduplication = opt.deduplication;
    this.uid = ++uidBase;
    this._onCollect = opt.onCollect;
  }
  OrdinalMeta.createByAxisModel = function (axisModel) {
    var option = axisModel.option;
    var data = option.data;
    var categories = data && map(data, getName);
    return new OrdinalMeta({
      categories: categories,
      needCollect: !categories,
      // deduplication is default in axis.
      deduplication: option.dedplication !== false
    });
  };
  ;
  OrdinalMeta.prototype.getOrdinal = function (category) {
    return this._getOrCreateMap().get(category);
  };
  /**
   * @return The ordinal. If not found, return NaN.
   */
  OrdinalMeta.prototype.parseAndCollect = function (category) {
    var index;
    var needCollect = this._needCollect;
    // The value of category dim can be the index of the given category set.
    // This feature is only supported when !needCollect, because we should
    // consider a common case: a value is 2017, which is a number but is
    // expected to be tread as a category. This case usually happen in dataset,
    // where it happent to be no need of the index feature.
    if (!isString(category) && !needCollect) {
      return category;
    }
    // Optimize for the scenario:
    // category is ['2012-01-01', '2012-01-02', ...], where the input
    // data has been ensured not duplicate and is large data.
    // Notice, if a dataset dimension provide categroies, usually echarts
    // should remove duplication except user tell echarts dont do that
    // (set axis.deduplication = false), because echarts do not know whether
    // the values in the category dimension has duplication (consider the
    // parallel-aqi example)
    if (needCollect && !this._deduplication) {
      index = this.categories.length;
      this.categories[index] = category;
      this._onCollect && this._onCollect(category, index);
      return index;
    }
    var map = this._getOrCreateMap();
    index = map.get(category);
    if (index == null) {
      if (needCollect) {
        index = this.categories.length;
        this.categories[index] = category;
        map.set(category, index);
        this._onCollect && this._onCollect(category, index);
      } else {
        index = NaN;
      }
    }
    return index;
  };
  // Consider big data, do not create map until needed.
  OrdinalMeta.prototype._getOrCreateMap = function () {
    return this._map || (this._map = createHashMap(this.categories));
  };
  return OrdinalMeta;
}();
function getName(obj) {
  if (isObject(obj) && obj.value != null) {
    return obj.value;
  } else {
    return obj + '';
  }
}
export default OrdinalMeta;