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      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