dhewm3/neo/idlib/containers/Queue.h
dhewg 79ad905e05 Fix all whitespace errors
Excluding 3rd party files.
2011-12-10 15:35:54 +01:00

88 lines
2.7 KiB
C++

/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#ifndef __QUEUE_H__
#define __QUEUE_H__
/*
===============================================================================
Queue template
===============================================================================
*/
#define idQueue( type, next ) idQueueTemplate<type, (int)&(((type*)NULL)->next)>
template< class type, int nextOffset >
class idQueueTemplate {
public:
idQueueTemplate( void );
void Add( type *element );
type * Get( void );
private:
type * first;
type * last;
};
#define QUEUE_NEXT_PTR( element ) (*((type**)(((byte*)element)+nextOffset)))
template< class type, int nextOffset >
idQueueTemplate<type,nextOffset>::idQueueTemplate( void ) {
first = last = NULL;
}
template< class type, int nextOffset >
void idQueueTemplate<type,nextOffset>::Add( type *element ) {
QUEUE_NEXT_PTR(element) = NULL;
if ( last ) {
QUEUE_NEXT_PTR(last) = element;
} else {
first = element;
}
last = element;
}
template< class type, int nextOffset >
type *idQueueTemplate<type,nextOffset>::Get( void ) {
type *element;
element = first;
if ( element ) {
first = QUEUE_NEXT_PTR(first);
if ( last == element ) {
last = NULL;
}
QUEUE_NEXT_PTR(element) = NULL;
}
return element;
}
#endif /* !__QUEUE_H__ */