1324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// [The "BSD licence"] 2324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit 3324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// All rights reserved. 4324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// 5324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// Redistribution and use in source and binary forms, with or without 6324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// modification, are permitted provided that the following conditions 7324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// are met: 8324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// 1. Redistributions of source code must retain the above copyright 9324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// notice, this list of conditions and the following disclaimer. 10324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// 2. Redistributions in binary form must reproduce the above copyright 11324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// notice, this list of conditions and the following disclaimer in the 12324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// documentation and/or other materials provided with the distribution. 13324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// 3. The name of the author may not be used to endorse or promote products 14324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// derived from this software without specific prior written permission. 15324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// 16324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 27324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 28324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#import <Cocoa/Cocoa.h> 29324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#import "ANTLRTreeNodeStream.h" 30324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#import "ANTLRCommonTokenStream.h" 31324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#import "ANTLRCommonTree.h" 32324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#import "ANTLRCommonTreeAdaptor.h" 33324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 34324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@interface ANTLRUnbufferedCommonTreeNodeStream : NSObject < ANTLRTreeNodeStream > { 35324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 36324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver BOOL shouldUseUniqueNavigationNodes; 37324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 38324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ANTLRCommonTree *root; 39324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ANTLRCommonTree *currentNode; 40324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ANTLRCommonTree *previousNode; 41324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 42324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver id<ANTLRTreeAdaptor> treeAdaptor; 43324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 44324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver id<ANTLRTokenStream> tokenStream; 45324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 46324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSMutableArray *nodeStack; 47324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSMutableArray *indexStack; 48324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver ANTLRPtrBuffer *markers; 49324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSInteger lastMarker; 50324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 51324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSInteger currentChildIndex; 52324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSInteger absoluteNodeIndex; 53324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 54324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSMutableArray *lookahead; 55324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSUInteger head; 56324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver NSUInteger tail; 57324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver} 58324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 59324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getRoot, setter=setRoot:) ANTLRCommonTree *root; 60324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getCurrentNode, setter=setCurrentNode:) ANTLRCommonTree *currentNode; 61324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getPreviousNode, setter=setPreviousNode:) ANTLRCommonTree *previousNode; 62324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getTreeAdaptor, setter=setTreeAdaptor:) id<ANTLRTreeAdaptor> treeAdaptor; 63324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getTokenStream, setter=setTokenStream:) id<ANTLRTokenStream> tokenStream; 64324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getNodeStack, setter=setNodeStack:) NSMutableArray *nodeStack; 65324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getIndexStack, setter=setIndexStackStack:) NSMutableArray *indexStack; 66324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getMarkers, setter=setMarkers:) ANTLRPtrBuffer *markers; 67324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (assign, getter=getLastMarker, setter=setLastMarker:) NSInteger lastMarker; 68324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (assign, getter=getCurrentChildIndex, setter=setCurrentChildIndex:) NSInteger currentChildIndex; 69324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (assign, getter=getAbsoluteNodeIndex, setter=setAbsoluteNodeIndex:) NSInteger absoluteNodeIndex; 70324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (retain, getter=getLookahead, setter=setLookahead:) NSMutableArray *lookahead; 71324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (assign, getter=getHead, setter=setHead:) NSUInteger head; 72324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@property (assign, getter=getTail, setter=setTail:) NSUInteger tail; 73324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 74324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id) initWithTree:(ANTLRCommonTree *)theTree; 75324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id) initWithTree:(ANTLRCommonTree *)theTree treeAdaptor:(ANTLRCommonTreeAdaptor *)theAdaptor; 76324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 77324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) reset; 78324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 79324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#pragma mark ANTLRTreeNodeStream conformance 80324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 81324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id) LT:(NSInteger)k; 82324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id) treeSource; 83324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id<ANTLRTreeAdaptor>) getTreeAdaptor; 84324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void)setTreeAdaptor:(id<ANTLRTreeAdaptor>)aTreeAdaptor; 85324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id<ANTLRTokenStream>) getTokenStream; 86324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) setTokenStream:(id<ANTLRTokenStream>)aTokenStream; ///< Added by subclass, not in protocol 87324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) setUsesUniqueNavigationNodes:(BOOL)flag; 88324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 89324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id) nodeAtIndex:(NSUInteger) idx; 90324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 91324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSString *) toString; 92324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSString *) toStringWithRange:(NSRange) aRange; 93324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSString *) toStringFromNode:(id)startNode toNode:(id)stopNode; 94324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 95324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#pragma mark ANTLRIntStream conformance 96324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) consume; 97324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSInteger) LA:(NSUInteger) i; 98324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSUInteger) mark; 99324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSUInteger) getIndex; 100324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) rewind:(NSUInteger) marker; 101324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) rewind; 102324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) release:(NSUInteger) marker; 103324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) seek:(NSUInteger) index; 104324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSUInteger) size; 105324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 106324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#pragma mark Lookahead Handling 107324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) addLookahead:(id<ANTLRBaseTree>)aNode; 108324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (NSUInteger) lookaheadSize; 109324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) fillBufferWithLookahead:(NSInteger)k; 110324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (id) nextObject; 111324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 112324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#pragma mark Node visiting 113324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (ANTLRCommonTree *) handleRootNode; 114324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (ANTLRCommonTree *) visitChild:(NSInteger)childNumber; 115324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) walkBackToMostRecentNodeWithUnvisitedChildren; 116324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) addNavigationNodeWithType:(NSInteger)tokenType; 117324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 118324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver#pragma mark Accessors 119324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (ANTLRCommonTree *) root; 120324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver- (void) setRoot: (ANTLRCommonTree *) aRoot; 121324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver 122324c4644fee44b9898524c09511bd33c3f12e2dfBen Gruver@end 123