90 lines
2.0 KiB
C++
90 lines
2.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/textconsole.h"
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#include "titanic/true_talk/tt_node.h"
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namespace Titanic {
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TTnode::TTnode() : _priorP(nullptr), _nextP(nullptr) {
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}
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TTnode::~TTnode() {
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detach();
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}
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void TTnode::addToTail(TTnode *newNode) {
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TTnode *tail = getTail();
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tail->_nextP = newNode;
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newNode->_priorP = this;
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}
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void TTnode::addToHead(TTnode *newNode) {
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TTnode *head = getHead();
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head->_priorP = newNode;
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newNode->_nextP = head;
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}
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void TTnode::detach() {
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if (_priorP)
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_priorP->_nextP = _nextP;
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if (_nextP)
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_nextP->_priorP = _priorP;
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}
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void TTnode::deleteSiblings() {
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// Detach current node from prior one, if there is one
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if (_priorP)
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_priorP->_nextP = nullptr;
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// Iterate through the linked chain of nodes, deleting each in turn
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while (_nextP) {
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TTnode *next = _nextP;
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_nextP = next->_nextP;
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delete next;
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}
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}
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TTnode *TTnode::getHead() {
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if (_priorP == nullptr)
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return this;
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TTnode *node = _priorP;
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while (node->_priorP)
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node = node->_priorP;
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return node;
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}
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TTnode *TTnode::getTail() {
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if (_nextP == nullptr)
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return this;
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TTnode *node = _nextP;
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while (node->_nextP)
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node = node->_nextP;
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return node;
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}
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} // End of namespace Titanic
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