| // |
| // ANTLRLinkBase.m |
| // ANTLR |
| // |
| // Created by Alan Condit on 6/14/10. |
| // [The "BSD licence"] |
| // Copyright (c) 2010 Alan Condit |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // 1. Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // 2. Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in the |
| // documentation and/or other materials provided with the distribution. |
| // 3. The name of the author may not be used to endorse or promote products |
| // derived from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| // IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| // NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #import "ANTLRLinkBase.h" |
| |
| @implementation ANTLRLinkBase |
| |
| @synthesize fPrev; |
| @synthesize fNext; |
| |
| +(id<ANTLRLinkList>)newANTLRLinkBase |
| { |
| return [[ANTLRLinkBase alloc] init]; |
| } |
| |
| +(id<ANTLRLinkList>)newANTLRLinkBase:(id<ANTLRLinkList>)np Prev:(id<ANTLRLinkList>)pp |
| { |
| return [[ANTLRLinkBase alloc] initWithPtr:np Prev:pp]; |
| } |
| |
| -(id<ANTLRLinkList>)init |
| { |
| if ((self = [super init]) != nil) { |
| fNext = nil; |
| fPrev = nil; |
| } |
| return(self); |
| } |
| |
| -(id<ANTLRLinkList>)initWithPtr:(id<ANTLRLinkList>)np Prev:(id<ANTLRLinkList>)pp |
| { |
| if ((self = [super init]) != nil) { |
| fNext = np; |
| fPrev = pp; |
| } |
| return(self); |
| } |
| |
| -(void)dealloc |
| { |
| #ifdef DEBUG_DEALLOC |
| NSLog( @"called dealloc in ANTLRLinkBase" ); |
| #endif |
| if (fNext) [fNext dealloc]; |
| if (fPrev) [fPrev dealloc]; |
| [super dealloc]; |
| } |
| |
| - (id) copyWithZone:(NSZone *)aZone |
| { |
| ANTLRLinkBase *copy; |
| |
| copy = [[self class] allocWithZone:aZone]; |
| copy.fPrev = fPrev; |
| copy.fNext = fNext; |
| return( copy ); |
| } |
| |
| -(id<ANTLRLinkList>)append:(id<ANTLRLinkList>)node |
| { |
| node.fPrev = (id<ANTLRLinkList>)self; |
| node.fNext = (id<ANTLRLinkList>)self.fNext; |
| if (node.fNext != nil) |
| node.fNext.fPrev = node; |
| self.fNext = node; |
| return( node ); |
| } |
| |
| -(id<ANTLRLinkList>)insert:(id<ANTLRLinkList>)node |
| { |
| node.fNext = self; |
| node.fPrev = self.fPrev; |
| if (node.fPrev != nil) |
| node.fPrev.fNext = node; |
| self.fPrev = node; |
| return( node ); |
| } |
| |
| -(id<ANTLRLinkList>)getfNext |
| { |
| return(fNext); |
| } |
| |
| -(void)setfNext:(id<ANTLRLinkList>)np |
| { |
| fNext = np; |
| } |
| |
| -(id<ANTLRLinkList>)getfPrev |
| { |
| return(fPrev); |
| } |
| |
| -(void)setfPrev:(id<ANTLRLinkList>)pp |
| { |
| fPrev = pp; |
| } |
| |
| @end |