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Sort.js
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34 lines (28 loc) · 1.04 KB
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import Comparator from '../../utils/comparator/Comparator';
/**
* @typedef {Object} SorterCallbacks
* @property {function(a: *, b: *)} compareCallback - If provided then all elements comparisons
* will be done through this callback.
* @property {function(a: *)} visitingCallback - If provided it will be called each time the sorting
* function is visiting the next element.
*/
export default class Sort {
constructor(originalCallbacks) {
this.callbacks = Sort.initSortingCallbacks(originalCallbacks);
this.comparator = new Comparator(this.callbacks.compareCallback);
}
/**
* @param {SorterCallbacks} originalCallbacks
* @returns {SorterCallbacks}
*/
static initSortingCallbacks(originalCallbacks) {
const callbacks = originalCallbacks || {};
const stubCallback = () => {};
callbacks.compareCallback = callbacks.compareCallback || undefined;
callbacks.visitingCallback = callbacks.visitingCallback || stubCallback;
return callbacks;
}
sort() {
throw new Error('sort method must be implemented');
}
}