133 lines
4 KiB
C++
133 lines
4 KiB
C++
/*************************************************************************/
|
|
/* self_list.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef SELF_LIST_H
|
|
#define SELF_LIST_H
|
|
|
|
#include "typedefs.h"
|
|
|
|
template <class T>
|
|
class SelfList {
|
|
public:
|
|
class List {
|
|
|
|
SelfList<T> *_first;
|
|
|
|
public:
|
|
void add(SelfList<T> *p_elem) {
|
|
|
|
ERR_FAIL_COND(p_elem->_root);
|
|
|
|
p_elem->_root = this;
|
|
p_elem->_next = _first;
|
|
p_elem->_prev = NULL;
|
|
if (_first)
|
|
_first->_prev = p_elem;
|
|
_first = p_elem;
|
|
}
|
|
void add_last(SelfList<T> *p_elem) {
|
|
|
|
ERR_FAIL_COND(p_elem->_root);
|
|
|
|
if (!_first) {
|
|
add(p_elem);
|
|
return;
|
|
}
|
|
|
|
SelfList<T> *e = _first;
|
|
|
|
while (e->next()) {
|
|
e = e->next();
|
|
}
|
|
|
|
e->_next = p_elem;
|
|
p_elem->_prev = e->_next;
|
|
p_elem->_root = this;
|
|
}
|
|
|
|
void remove(SelfList<T> *p_elem) {
|
|
|
|
ERR_FAIL_COND(p_elem->_root != this);
|
|
if (p_elem->_next) {
|
|
|
|
p_elem->_next->_prev = p_elem->_prev;
|
|
}
|
|
if (p_elem->_prev) {
|
|
|
|
p_elem->_prev->_next = p_elem->_next;
|
|
}
|
|
|
|
if (_first == p_elem) {
|
|
|
|
_first = p_elem->_next;
|
|
}
|
|
|
|
p_elem->_next = NULL;
|
|
p_elem->_prev = NULL;
|
|
p_elem->_root = NULL;
|
|
}
|
|
|
|
_FORCE_INLINE_ SelfList<T> *first() { return _first; }
|
|
_FORCE_INLINE_ const SelfList<T> *first() const { return _first; }
|
|
_FORCE_INLINE_ List() { _first = NULL; }
|
|
_FORCE_INLINE_ ~List() { ERR_FAIL_COND(_first != NULL); }
|
|
};
|
|
|
|
private:
|
|
List *_root;
|
|
T *_self;
|
|
SelfList<T> *_next;
|
|
SelfList<T> *_prev;
|
|
|
|
public:
|
|
_FORCE_INLINE_ bool in_list() const { return _root; }
|
|
_FORCE_INLINE_ SelfList<T> *next() { return _next; }
|
|
_FORCE_INLINE_ SelfList<T> *prev() { return _prev; }
|
|
_FORCE_INLINE_ const SelfList<T> *next() const { return _next; }
|
|
_FORCE_INLINE_ const SelfList<T> *prev() const { return _prev; }
|
|
_FORCE_INLINE_ T *self() const { return _self; }
|
|
|
|
_FORCE_INLINE_ SelfList(T *p_self) {
|
|
|
|
_self = p_self;
|
|
_next = NULL;
|
|
_prev = NULL;
|
|
_root = NULL;
|
|
}
|
|
|
|
_FORCE_INLINE_ ~SelfList() {
|
|
|
|
if (_root)
|
|
_root->remove(this);
|
|
}
|
|
};
|
|
|
|
#endif // SELF_LIST_H
|