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 28#import <Cocoa/Cocoa.h> 29#import "ANTLRCharStream.h" 30#import "ANTLRCharStreamState.h" 31#import "ANTLRPtrBuffer.h" 32 33@interface ANTLRStringStream : NSObject < ANTLRCharStream > { 34 NSString *data; 35 NSInteger n; 36 NSInteger index; 37 NSUInteger line; 38 NSUInteger charPositionInLine; 39 NSInteger markDepth; 40 ANTLRPtrBuffer *markers; 41 NSInteger lastMarker; 42 NSString *name; 43 ANTLRCharStreamState *charState; 44} 45 46+ newANTLRStringStream; 47 48+ newANTLRStringStream:(NSString *)aString; 49 50+ newANTLRStringStream:(char *)myData Count:(NSInteger)numBytes; 51 52- (id) init; 53 54// this initializer copies the string 55- (id) initWithString:(NSString *) theString; 56 57// This is the preferred constructor as no data is copied 58- (id) initWithStringNoCopy:(NSString *) theString; 59 60- (id) initWithData:(char *)myData Count:(NSInteger)numBytes; 61 62- (void) dealloc; 63 64- (id) copyWithZone:(NSZone *)aZone; 65 66// reset the stream's state, but keep the data to feed off 67- (void) reset; 68// consume one character from the stream 69- (void) consume; 70 71// look ahead i characters 72- (NSInteger) LA:(NSInteger) i; 73- (NSInteger) LT:(NSInteger) i; 74 75// total length of the input data 76- (NSInteger) size; 77 78// seek and rewind in the stream 79- (NSInteger) mark; 80- (void) rewind:(NSInteger) marker; 81- (void) rewind; 82- (void) release:(NSInteger) marker; 83- (void) seek:(NSInteger) index; 84 85// provide the streams data (e.g. for tokens using indices) 86- (NSString *) substring:(NSInteger)startIndex To:(NSInteger)stopIndex; 87- (NSString *) substringWithRange:(NSRange) theRange; 88 89- (ANTLRPtrBuffer *)getMarkers; 90- (void) setMarkers:(ANTLRPtrBuffer *)aMarkerList; 91 92- (NSString *)getSourceName; 93 94- (NSString *)toString; 95 96// accessors to the raw data of this stream 97 98@property (retain) NSString *data; 99@property (assign) NSInteger index; 100@property (assign) NSInteger n; 101@property (assign) NSUInteger line; 102@property (assign) NSUInteger charPositionInLine; 103@property (assign) NSInteger markDepth; 104@property (retain) ANTLRPtrBuffer *markers; 105@property (assign) NSInteger lastMarker; 106@property (retain) NSString *name; 107@property (retain) ANTLRCharStreamState *charState; 108 109@end 110