1//
2//  ANTLRNodeMapElement.m
3//  ANTLR
4//
5//  Created by Alan Condit on 6/16/10.
6// [The "BSD licence"]
7// Copyright (c) 2010 Alan Condit
8// All rights reserved.
9//
10// Redistribution and use in source and binary forms, with or without
11// modification, are permitted provided that the following conditions
12// are met:
13// 1. Redistributions of source code must retain the above copyright
14//    notice, this list of conditions and the following disclaimer.
15// 2. Redistributions in binary form must reproduce the above copyright
16//    notice, this list of conditions and the following disclaimer in the
17//    documentation and/or other materials provided with the distribution.
18// 3. The name of the author may not be used to endorse or promote products
19//    derived from this software without specific prior written permission.
20//
21// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31
32#import "ANTLRNodeMapElement.h"
33
34static NSInteger _aUniqueID;
35
36@implementation ANTLRNodeMapElement
37
38@synthesize node;
39
40+ (void)initialize
41{
42    _aUniqueID = 0;
43}
44
45+ (ANTLRNodeMapElement *)newANTLRNodeMapElement
46{
47    return [[ANTLRNodeMapElement alloc] init];
48}
49
50+ (ANTLRNodeMapElement *)newANTLRNodeMapElementWithIndex:(id)anIndex Node:(id<ANTLRBaseTree>)aNode
51{
52    return [[ANTLRNodeMapElement alloc] initWithAnIndex:anIndex Node:aNode];
53}
54
55- (id) init
56{
57    if ((self = [super init]) != nil ) {
58        index = nil;
59        node = nil;
60    }
61    return (self);
62}
63
64- (id) initWithAnIndex:(id)anIndex Node:(id)aNode
65{
66    self = [super initWithAnIndex:anIndex];
67    if ( self ) {
68        if ( aNode != node ) {
69            if ( node ) [node release];
70            [aNode retain];
71        }
72        node = aNode;
73    }
74    return (self);
75}
76
77- (id) copyWithZone:(NSZone *)aZone
78{
79    ANTLRNodeMapElement *copy;
80    
81    copy = [super copyWithZone:aZone];
82    copy.node = node;
83    return( copy );
84}
85
86- (id<ANTLRBaseTree>)getNode
87{
88    return node;
89}
90
91- (void)setNode:(id<ANTLRBaseTree>)aNode
92{
93    if ( aNode != node ) {
94        if ( node ) [node release];
95        [aNode retain];
96    }
97    node = aNode;
98}
99
100- (NSInteger)size
101{
102    NSInteger aSize = 0;
103    if (node != nil) aSize += sizeof(id);
104    if (index != nil) aSize += sizeof(id);
105    return( aSize );
106}
107
108@end
109