runtime/ObjC/Framework/UnbufferedCommonTreeNodeStreamState.h

// [The "BSD licence"]
// Copyright (c) 2006-2007 Kay Roepke 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.
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//    derived from this software without specific prior written permission.
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#import <Cocoa/Cocoa.h>
#import "CommonTree.h"

@interface ANTLRUnbufferedCommonTreeNodeStreamState : NSObject {
	CommonTree *currentNode;
	CommonTree *previousNode;

	int currentChildIndex;
	int absoluteNodeIndex;
	unsigned int nodeStackSize;
	unsigned int indexStackSize;
	
	NSMutableArray *lookahead;
}

- (CommonTree *) currentNode;
- (void) setCurrentNode: (CommonTree *) aCurrentNode;

- (CommonTree *) previousNode;
- (void) setPreviousNode: (CommonTree *) aPreviousNode;

- (NSInteger) currentChildIndex;
- (void) setCurrentChildIndex: (NSInteger) aCurrentChildIndex;

- (NSInteger) absoluteNodeIndex;
- (void) setAbsoluteNodeIndex: (NSInteger) anAbsoluteNodeIndex;

- (NSUInteger) nodeStackSize;
- (void) setNodeStackSize: (NSUInteger) aNodeStackSize;

- (NSUInteger) indexStackSize;
- (void) setIndexStackSize: (NSUInteger) anIndexStackSize;

- (NSMutableArray *) lookahead;
- (void) setLookahead: (NSMutableArray *) aLookahead;

- (void) addToLookahead: (id)lookaheadObject;
- (void) removeFromLookahead: (id)lookaheadObject;

@end