1//
2//  ANTLRStreamEnumertor.m
3//  ANTLR
4//
5//  Created by Ian Michell on 29/04/2010.
6// [The "BSD licence"]
7// Copyright (c) 2010 Ian Michell 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 "ANTLRStreamEnumerator.h"
33
34
35@implementation ANTLRStreamEnumerator
36
37-(id) init
38{
39	self = [super init];
40	if (self)
41	{
42		i = 0;
43	}
44	return self;
45}
46
47-(id) initWithNodes:(AMutableArray *) n andEOF:(id) obj
48{
49	self = [self init];
50	if (self)
51	{
52		nodes = n;
53		eof = obj;
54	}
55	return self;
56}
57
58-(BOOL) hasNext
59{
60	return i < [nodes count];
61}
62
63-(id) nextObject
64{
65	NSUInteger current = i;
66	i++;
67	if (current < [nodes count])
68	{
69		return [nodes objectAtIndex:current];
70	}
71	return eof;
72}
73
74@synthesize i;
75@synthesize eof;
76@synthesize nodes;
77@end
78