1 // [The "BSD licence"] 2 // Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit 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 "ANTLRTokenStream.h" 29 #import "ANTLRTokenSource.h" 30 #import "ANTLRBitSet.h" 31 #import "ANTLRCommonToken.h" 32 #import "AMutableArray.h" 33 34 @interface ANTLRBufferedTokenStream : NSObject <ANTLRTokenStream> 35 { 36 __strong id<ANTLRTokenSource> tokenSource; 37 38 /** Record every single token pulled from the source so we can reproduce 39 * chunks of it later. The buffer in LookaheadStream overlaps sometimes 40 * as its moving window moves through the input. This list captures 41 * everything so we can access complete input text. 42 */ 43 __strong AMutableArray *tokens; 44 45 /** Track the last mark() call result value for use in rewind(). */ 46 NSInteger lastMarker; 47 48 /** The index into the tokens list of the current token (next token 49 * to consume). tokens[index] should be LT(1). index=-1 indicates need 50 * to initialize with first token. The ctor doesn't get a token. 51 * First call to LT(1) or whatever gets the first token and sets index=0; 52 */ 53 NSInteger index; 54 55 NSInteger range; // how deep have we gone? 56 57 } 58 @property (retain, getter=getTokenSource,setter=setTokenSource:) id<ANTLRTokenSource> tokenSource; 59 @property (retain, getter=getTokens,setter=setTokens:) AMutableArray *tokens; 60 @property (assign, getter=getLastMarker,setter=setLastMarker:) NSInteger lastMarker; 61 @property (assign) NSInteger index; 62 @property (assign, getter=getRange,setter=setRange:) NSInteger range; 63 64 + (ANTLRBufferedTokenStream *) newANTLRBufferedTokenStream; 65 + (ANTLRBufferedTokenStream *) newANTLRBufferedTokenStreamWith:(id<ANTLRTokenSource>)aSource; 66 - (id) initWithTokenSource:(id<ANTLRTokenSource>)aSource; 67 - (void)dealloc; 68 - (id) copyWithZone:(NSZone *)aZone; 69 - (NSUInteger)charPositionInLine; 70 - (NSUInteger)line; 71 - (NSInteger) getRange; 72 - (void) setRange:(NSInteger)anInt; 73 - (NSInteger) mark; 74 - (void) release:(NSInteger) marker; 75 - (void) rewind:(NSInteger) marker; 76 - (void) rewind; 77 - (void) reset; 78 - (void) seek:(NSInteger) anIndex; 79 - (NSInteger) size; 80 - (void) consume; 81 - (void) sync:(NSInteger) i; 82 - (void) fetch:(NSInteger) n; 83 - (id<ANTLRToken>) getToken:(NSInteger) i; 84 - (AMutableArray *)getFrom:(NSInteger)startIndex To:(NSInteger) stopIndex; 85 - (NSInteger) LA:(NSInteger)i; 86 - (id<ANTLRToken>) LB:(NSInteger) k; 87 - (id<ANTLRToken>) LT:(NSInteger) k; 88 - (void) setup; 89 - (id<ANTLRTokenSource>) getTokenSource; 90 - (void) setTokenSource:(id<ANTLRTokenSource>) aTokenSource; 91 - (AMutableArray *)getTokens; 92 - (NSString *) getSourceName; 93 - (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex; 94 - (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex With:(ANTLRBitSet *)types; 95 - (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex WithList:(AMutableArray *)types; 96 - (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex WithType:(NSInteger)ttype; 97 - (NSString *) toString; 98 - (NSString *) toStringFromStart:(NSInteger)startIndex ToEnd:(NSInteger)stopIndex; 99 - (NSString *) toStringFromToken:(id<ANTLRToken>)startIndex ToToken:(id<ANTLRToken>)stopIndex; 100 - (void) fill; 101 102 @end 103