File content as of revision 0:a9259748d982:

/*  _  __  ____    _   _ 
 * | |/ / |  _ \  | \ | |
 * | ' /  | |_) | |  \| |
 * | . \  |  __/  | |\  |
 * |_|\_\ |_|     |_| \_|
 * 
 * (c) 2018 KPN
 * License: MIT License.
 * Author: Jan Bogaerts
 * 
 * base class for all senml objects
 */


#include <senml_base.h>
#include <senml_pack.h>


SenMLBase::SenMLBase(): _prev(NULL), _next(NULL)
{
}

SenMLBase::~SenMLBase()
{
    if(this->_prev)
        this->_prev->setNext(this->_next);
    if(this->_next)
        this->_next->setPrev(this->_prev);
    
}

void SenMLBase::setNext(SenMLBase* value)
{
    if(value == NULL){                                              //if next becomes null and there is a root, then this object became the last in the list, so let the root know.
        SenMLPack* root = (SenMLPack*)this->getRoot();
        if(root)
            root->setLast(this);
    }
    this->_next = value;
}

 void SenMLBase::setPrev(SenMLBase* value)
 {
     this->_prev = value;
 }

SenMLBase* SenMLBase::getPrev()
{
    return this->_prev;
}

SenMLBase* SenMLBase::getRoot()
{
    SenMLBase* prev = this->_prev;
    while(prev){
        SenMLBase* newPrev = prev->getPrev();
        if(newPrev == NULL)
            return prev;
        else
            prev = newPrev;
    }
    return this;                                    //if there was no first prev, it means we are root.
}