| // [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. |
| // 3. The name of the author may not be used to endorse or promote products |
| // derived from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| // IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| // NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| |
| #import <Cocoa/Cocoa.h> |
| #import "ANTLRTreeNodeStream.h" |
| #import "ANTLRCommonTokenStream.h" |
| #import "ANTLRCommonTree.h" |
| #import "ANTLRCommonTreeAdaptor.h" |
| |
| @interface ANTLRUnbufferedCommonTreeNodeStream : NSObject < ANTLRTreeNodeStream > { |
| |
| BOOL shouldUseUniqueNavigationNodes; |
| |
| ANTLRCommonTree *root; |
| ANTLRCommonTree *currentNode; |
| ANTLRCommonTree *previousNode; |
| |
| id<ANTLRTreeAdaptor> treeAdaptor; |
| |
| id<ANTLRTokenStream> tokenStream; |
| |
| NSMutableArray *nodeStack; |
| NSMutableArray *indexStack; |
| ANTLRPtrBuffer *markers; |
| NSInteger lastMarker; |
| |
| NSInteger currentChildIndex; |
| NSInteger absoluteNodeIndex; |
| |
| NSMutableArray *lookahead; |
| NSUInteger head; |
| NSUInteger tail; |
| } |
| |
| @property (retain, getter=getRoot, setter=setRoot:) ANTLRCommonTree *root; |
| @property (retain, getter=getCurrentNode, setter=setCurrentNode:) ANTLRCommonTree *currentNode; |
| @property (retain, getter=getPreviousNode, setter=setPreviousNode:) ANTLRCommonTree *previousNode; |
| @property (retain, getter=getTreeAdaptor, setter=setTreeAdaptor:) id<ANTLRTreeAdaptor> treeAdaptor; |
| @property (retain, getter=getTokenStream, setter=setTokenStream:) id<ANTLRTokenStream> tokenStream; |
| @property (retain, getter=getNodeStack, setter=setNodeStack:) NSMutableArray *nodeStack; |
| @property (retain, getter=getIndexStack, setter=setIndexStackStack:) NSMutableArray *indexStack; |
| @property (retain, getter=getMarkers, setter=setMarkers:) ANTLRPtrBuffer *markers; |
| @property (assign, getter=getLastMarker, setter=setLastMarker:) NSInteger lastMarker; |
| @property (assign, getter=getCurrentChildIndex, setter=setCurrentChildIndex:) NSInteger currentChildIndex; |
| @property (assign, getter=getAbsoluteNodeIndex, setter=setAbsoluteNodeIndex:) NSInteger absoluteNodeIndex; |
| @property (retain, getter=getLookahead, setter=setLookahead:) NSMutableArray *lookahead; |
| @property (assign, getter=getHead, setter=setHead:) NSUInteger head; |
| @property (assign, getter=getTail, setter=setTail:) NSUInteger tail; |
| |
| - (id) initWithTree:(ANTLRCommonTree *)theTree; |
| - (id) initWithTree:(ANTLRCommonTree *)theTree treeAdaptor:(ANTLRCommonTreeAdaptor *)theAdaptor; |
| |
| - (void) reset; |
| |
| #pragma mark ANTLRTreeNodeStream conformance |
| |
| - (id) LT:(NSInteger)k; |
| - (id) treeSource; |
| - (id<ANTLRTreeAdaptor>) getTreeAdaptor; |
| - (void)setTreeAdaptor:(id<ANTLRTreeAdaptor>)aTreeAdaptor; |
| - (id<ANTLRTokenStream>) getTokenStream; |
| - (void) setTokenStream:(id<ANTLRTokenStream>)aTokenStream; ///< Added by subclass, not in protocol |
| - (void) setUsesUniqueNavigationNodes:(BOOL)flag; |
| |
| - (id) nodeAtIndex:(NSUInteger) idx; |
| |
| - (NSString *) toString; |
| - (NSString *) toStringWithRange:(NSRange) aRange; |
| - (NSString *) toStringFromNode:(id)startNode toNode:(id)stopNode; |
| |
| #pragma mark ANTLRIntStream conformance |
| - (void) consume; |
| - (NSInteger) LA:(NSUInteger) i; |
| - (NSUInteger) mark; |
| - (NSUInteger) getIndex; |
| - (void) rewind:(NSUInteger) marker; |
| - (void) rewind; |
| - (void) release:(NSUInteger) marker; |
| - (void) seek:(NSUInteger) index; |
| - (NSUInteger) size; |
| |
| #pragma mark Lookahead Handling |
| - (void) addLookahead:(id<ANTLRBaseTree>)aNode; |
| - (NSUInteger) lookaheadSize; |
| - (void) fillBufferWithLookahead:(NSInteger)k; |
| - (id) nextObject; |
| |
| #pragma mark Node visiting |
| - (ANTLRCommonTree *) handleRootNode; |
| - (ANTLRCommonTree *) visitChild:(NSInteger)childNumber; |
| - (void) walkBackToMostRecentNodeWithUnvisitedChildren; |
| - (void) addNavigationNodeWithType:(NSInteger)tokenType; |
| |
| #pragma mark Accessors |
| - (ANTLRCommonTree *) root; |
| - (void) setRoot: (ANTLRCommonTree *) aRoot; |
| |
| @end |