mirror of
https://github.com/cocos/cocos-engine.git
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92 lines
2.6 KiB
TypeScript
92 lines
2.6 KiB
TypeScript
/*
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2020 Xiamen Yaji Software Co., Ltd.
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https://www.cocos.com/
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated engine source code (the "Software"), a limited,
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worldwide, royalty-free, non-assignable, revocable and non-exclusive license
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to use Cocos Creator solely to develop games on your target platforms. You shall
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not use Cocos Creator software for developing other software or tools that's
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used for developing games. You are not granted to publish, distribute,
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sublicense, and/or sell copies of Cocos Creator.
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The software or tools in this License Agreement are licensed, not sold.
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Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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/**
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* @example
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* ```
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* import { js } from 'cc';
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* var array = [0, 1, 2, 3, 4];
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* var iterator = new js.array.MutableForwardIterator(array);
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* for (iterator.i = 0; iterator.i < array.length; ++iterator.i) {
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* var item = array[iterator.i];
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* ...
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* }
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* ```
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*/
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export default class MutableForwardIterator<T> {
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public i = 0;
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constructor (public array: T[]) {
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}
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get length () {
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return this.array.length;
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}
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set length (value: number) {
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this.array.length = value;
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if (this.i >= value) {
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this.i = value - 1;
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}
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}
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public remove (value: T) {
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const index = this.array.indexOf(value);
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if (index >= 0) {
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this.removeAt(index);
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}
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}
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public removeAt (i: number) {
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this.array.splice(i, 1);
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if (i <= this.i) {
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--this.i;
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}
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}
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public fastRemove (value: T) {
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const index = this.array.indexOf(value);
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if (index >= 0) {
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this.fastRemoveAt(index);
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}
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}
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public fastRemoveAt (i: number) {
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const array = this.array;
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array[i] = array[array.length - 1];
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--array.length;
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if (i <= this.i) {
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--this.i;
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}
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}
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public push (item: T) {
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this.array.push(item);
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}
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}
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