mirror of https://github.com/ARMmbed/mbed-os.git
114 lines
2.1 KiB
C++
114 lines
2.1 KiB
C++
/*
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* Copyright (c) 2017, Arm Limited and affiliates.
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* SPDX-License-Identifier: Apache-2.0
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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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#ifndef CELLULAR_LIST_H_
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#define CELLULAR_LIST_H_
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#include <stddef.h>
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namespace mbed {
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/** Class CellularList
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*
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* Templated linked list class for common usage.
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*
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*/
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template <class T> class CellularList
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{
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private:
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T *_head, *_tail;
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public:
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CellularList()
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{
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_head=NULL;
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_tail=NULL;
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}
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~CellularList()
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{
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T *temp = _head;
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while (temp) {
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_head = _head->next;
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delete temp;
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temp = _head;
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}
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}
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T* add_new()
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{
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T *temp=new T;
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if (!temp) {
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return NULL;
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}
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temp->next = NULL;
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if (_head == NULL) {
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_head = temp;
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} else {
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_tail->next=temp;
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}
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_tail = temp;
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return _tail;
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}
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void delete_last()
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{
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T* previous = NULL;
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T *current=_head;
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if (!current) {
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return;
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}
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while (current->next != NULL) {
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previous=current;
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current=current->next;
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}
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if (previous) {
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_tail=previous;
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previous->next=NULL;
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} else {
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_head = NULL;
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_tail = NULL;
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}
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delete current;
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}
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void delete_all()
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{
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T *temp = _head;
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while (temp) {
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_head = _head->next;
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delete temp;
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temp = _head;
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}
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_tail=NULL;
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}
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T *get_head()
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{
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return _head;
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}
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};
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} // namespace mbed
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#endif // CELLULAR_LIST_H_
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