78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _maxSafeInteger = require("babel-runtime/core-js/number/max-safe-integer");
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var _maxSafeInteger2 = _interopRequireDefault(_maxSafeInteger);
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var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck");
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var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
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var _createClass2 = require("babel-runtime/helpers/createClass");
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var _createClass3 = _interopRequireDefault(_createClass2);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* Copyright (c) 2002-2018 "Neo4j,"
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* Neo4j Sweden AB [http://neo4j.com]
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*
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* This file is part of Neo4j.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var RoundRobinArrayIndex = function () {
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/**
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* @constructor
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* @param {number} [initialOffset=0] the initial offset for round robin.
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*/
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function RoundRobinArrayIndex(initialOffset) {
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(0, _classCallCheck3.default)(this, RoundRobinArrayIndex);
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this._offset = initialOffset || 0;
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}
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/**
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* Get next index for an array with given length.
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* @param {number} arrayLength the array length.
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* @return {number} index in the array.
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*/
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(0, _createClass3.default)(RoundRobinArrayIndex, [{
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key: "next",
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value: function next(arrayLength) {
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if (arrayLength === 0) {
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return -1;
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}
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var nextOffset = this._offset;
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this._offset += 1;
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if (this._offset === _maxSafeInteger2.default) {
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this._offset = 0;
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}
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return nextOffset % arrayLength;
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}
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}]);
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return RoundRobinArrayIndex;
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}();
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exports.default = RoundRobinArrayIndex; |