1// [The "BSD licence"]
2// Copyright (c) 2006-2007 Kay Roepke
3// All rights reserved.
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions
7// are met:
8// 1. Redistributions of source code must retain the above copyright
9//    notice, this list of conditions and the following disclaimer.
10// 2. Redistributions in binary form must reproduce the above copyright
11//    notice, this list of conditions and the following disclaimer in the
12//    documentation and/or other materials provided with the distribution.
13// 3. The name of the author may not be used to endorse or promote products
14//    derived from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27#import <Cocoa/Cocoa.h>
28#import "ANTLRCommonTree.h"
29
30@interface ANTLRUnbufferedCommonTreeNodeStreamState : NSObject {
31	ANTLRCommonTree *currentNode;
32	ANTLRCommonTree *previousNode;
33
34	int currentChildIndex;
35	int absoluteNodeIndex;
36	unsigned int nodeStackSize;
37	unsigned int indexStackSize;
38
39	NSMutableArray *lookahead;
40}
41
42- (ANTLRCommonTree *) currentNode;
43- (void) setCurrentNode: (ANTLRCommonTree *) aCurrentNode;
44
45- (ANTLRCommonTree *) previousNode;
46- (void) setPreviousNode: (ANTLRCommonTree *) aPreviousNode;
47
48- (NSInteger) currentChildIndex;
49- (void) setCurrentChildIndex: (NSInteger) aCurrentChildIndex;
50
51- (NSInteger) absoluteNodeIndex;
52- (void) setAbsoluteNodeIndex: (NSInteger) anAbsoluteNodeIndex;
53
54- (NSUInteger) nodeStackSize;
55- (void) setNodeStackSize: (NSUInteger) aNodeStackSize;
56
57- (NSUInteger) indexStackSize;
58- (void) setIndexStackSize: (NSUInteger) anIndexStackSize;
59
60- (NSMutableArray *) lookahead;
61- (void) setLookahead: (NSMutableArray *) aLookahead;
62
63- (void) addToLookahead: (id)lookaheadObject;
64- (void) removeFromLookahead: (id)lookaheadObject;
65
66@end
67