1/* 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16declare class Deque<T> { 17 /** 18 * A constructor used to create a Deque object. 19 * @throws { BusinessError } 10200012 - The Deque's constructor cannot be directly invoked. 20 * @since 8 21 * @syscap SystemCapability.Utils.Lang 22 */ 23 constructor(); 24 /** 25 * Gets the element number of the Deque.This is a number one higher than the highest index in the deque. 26 * @since 8 27 * @syscap SystemCapability.Utils.Lang 28 */ 29 length: number; 30 /** 31 * Inserts an element into the deque header. 32 * @param element to be appended to this deque 33 * @throws { BusinessError } 10200011 - The insertFront method cannot be bound. 34 * @since 8 35 * @syscap SystemCapability.Utils.Lang 36 */ 37 insertFront(element: T): void; 38 /** 39 * Inserting an element at the end of a deque 40 * @param element to be appended to this deque 41 * @throws { BusinessError } 10200011 - The insertEnd method cannot be bound. 42 * @since 8 43 * @syscap SystemCapability.Utils.Lang 44 */ 45 insertEnd(element: T): void; 46 /** 47 * Check if deque contains the specified element 48 * @param element element to be contained 49 * @returns the boolean type,if deque contains the specified element,return true,else return false 50 * @throws { BusinessError } 10200011 - The has method cannot be bound. 51 * @since 8 52 * @syscap SystemCapability.Utils.Lang 53 */ 54 has(element: T): boolean; 55 /** 56 * Obtains the header element of a deque. 57 * @returns the T type 58 * @throws { BusinessError } 10200011 - The getFirst method cannot be bound. 59 * @since 8 60 * @syscap SystemCapability.Utils.Lang 61 */ 62 getFirst(): T; 63 /** 64 * Obtains the end element of a deque. 65 * @returns the T type 66 * @throws { BusinessError } 10200011 - The getLast method cannot be bound. 67 * @since 8 68 * @syscap SystemCapability.Utils.Lang 69 */ 70 getLast(): T; 71 /** 72 * Obtains the header element of a deque and delete the element. 73 * @returns the T type 74 * @throws { BusinessError } 10200011 - The popFirst method cannot be bound. 75 * @since 8 76 * @syscap SystemCapability.Utils.Lang 77 */ 78 popFirst(): T; 79 /** 80 * Obtains the end element of a deque and delete the element. 81 * @returns the T type 82 * @throws { BusinessError } 10200011 - The popLast method cannot be bound. 83 * @since 8 84 * @syscap SystemCapability.Utils.Lang 85 */ 86 popLast(): T; 87 /** 88 * Executes a provided function once for each value in the deque object. 89 * @param callbackFn (required) A function that accepts up to four arguments.The function to be called for each element in the deque 90 * @param Value (required) current element 91 * @param Index (Optional) The index value of the current element. 92 * @param deque (Optional) The deque object to which the current element belongs. 93 * @param thisArg (Optional) The value passed to the function generally uses the "this" value. 94 * If this parameter is empty, "undefined" will be passed to the "this" value 95 * @throws { BusinessError } 401 - The type of parameters are invalid. 96 * @throws { BusinessError } 10200011 - The forEach method cannot be bound. 97 * @since 8 98 * @syscap SystemCapability.Utils.Lang 99 */ 100 forEach(callbackFn: (value: T, index?: number, deque?: Deque<T>) => void, 101 thisArg?: Object): void; 102 /** 103 * returns an iterator.Each item of the iterator is a Javascript Object 104 * @throws { BusinessError } 10200011 - The Symbol.iterator method cannot be bound. 105 * @since 8 106 * @syscap SystemCapability.Utils.Lang 107 */ 108 [Symbol.iterator](): IterableIterator<T>; 109} 110 111export default Deque;