xref: /external/antlr/antlr-3.4/runtime/ObjC/Framework/ANTLRBufferedTokenStream.h

// [The "BSD licence"]
// Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit
// All rights reserved.
//
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// modification, are permitted provided that the following conditions
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//    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
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#import <Cocoa/Cocoa.h>
#import "ANTLRTokenStream.h"
#import "ANTLRTokenSource.h"
#import "ANTLRBitSet.h"
#import "ANTLRCommonToken.h"
#import "AMutableArray.h"

@interface ANTLRBufferedTokenStream : NSObject <ANTLRTokenStream>
{
__strong id<ANTLRTokenSource> tokenSource;

    /** Record every single token pulled from the source so we can reproduce
     *  chunks of it later.  The buffer in LookaheadStream overlaps sometimes
     *  as its moving window moves through the input.  This list captures
     *  everything so we can access complete input text.
     */
__strong AMutableArray *tokens;

    /** Track the last mark() call result value for use in rewind(). */
NSInteger lastMarker;

    /** The index into the tokens list of the current token (next token
     *  to consume).  tokens[index] should be LT(1).  index=-1 indicates need
     *  to initialize with first token.  The ctor doesn't get a token.
     *  First call to LT(1) or whatever gets the first token and sets index=0;
     */
NSInteger index;

NSInteger range; // how deep have we gone?

}
@property (retain, getter=getTokenSource,setter=setTokenSource:) id<ANTLRTokenSource> tokenSource;
@property (retain, getter=getTokens,setter=setTokens:) AMutableArray *tokens;
@property (assign, getter=getLastMarker,setter=setLastMarker:) NSInteger lastMarker;
@property (assign) NSInteger index;
@property (assign, getter=getRange,setter=setRange:) NSInteger range;

+ (ANTLRBufferedTokenStream *) newANTLRBufferedTokenStream;
+ (ANTLRBufferedTokenStream *) newANTLRBufferedTokenStreamWith:(id<ANTLRTokenSource>)aSource;
- (id) initWithTokenSource:(id<ANTLRTokenSource>)aSource;
- (void)dealloc;
- (id) copyWithZone:(NSZone *)aZone;
- (NSUInteger)charPositionInLine;
- (NSUInteger)line;
- (NSInteger) getRange;
- (void) setRange:(NSInteger)anInt;
- (NSInteger) mark;
- (void) release:(NSInteger) marker;
- (void) rewind:(NSInteger) marker;
- (void) rewind;
- (void) reset;
- (void) seek:(NSInteger) anIndex;
- (NSInteger) size;
- (void) consume;
- (void) sync:(NSInteger) i;
- (void) fetch:(NSInteger) n;
- (id<ANTLRToken>) getToken:(NSInteger) i;
- (AMutableArray *)getFrom:(NSInteger)startIndex To:(NSInteger) stopIndex;
- (NSInteger) LA:(NSInteger)i;
- (id<ANTLRToken>) LB:(NSInteger) k;
- (id<ANTLRToken>) LT:(NSInteger) k;
- (void) setup;
- (id<ANTLRTokenSource>) getTokenSource;
- (void) setTokenSource:(id<ANTLRTokenSource>) aTokenSource;
- (AMutableArray *)getTokens;
- (NSString *) getSourceName;
- (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex;
- (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex With:(ANTLRBitSet *)types;
- (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex WithList:(AMutableArray *)types;
- (AMutableArray *)getTokensFrom:(NSInteger)startIndex To:(NSInteger)stopIndex WithType:(NSInteger)ttype;
- (NSString *) toString;
- (NSString *) toStringFromStart:(NSInteger)startIndex ToEnd:(NSInteger)stopIndex;
- (NSString *) toStringFromToken:(id<ANTLRToken>)startIndex ToToken:(id<ANTLRToken>)stopIndex;
- (void) fill;

@end