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1 //
2 //  ANTLRUnbufferedTokenStream.h
3 //  ANTLR
4 //
5 //  Created by Alan Condit on 7/12/10.
6 // [The "BSD licence"]
7 // Copyright (c) 2010 Alan Condit
8 // All rights reserved.
9 //
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions
12 // are met:
13 // 1. Redistributions of source code must retain the above copyright
14 //    notice, this list of conditions and the following disclaimer.
15 // 2. Redistributions in binary form must reproduce the above copyright
16 //    notice, this list of conditions and the following disclaimer in the
17 //    documentation and/or other materials provided with the distribution.
18 // 3. The name of the author may not be used to endorse or promote products
19 //    derived from this software without specific prior written permission.
20 //
21 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 // IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 // NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 
32 #import <Cocoa/Cocoa.h>
33 #import "ANTLRRuntimeException.h"
34 #import "ANTLRTokenSource.h"
35 #import "ANTLRLookaheadStream.h"
36 #import "ANTLRToken.h"
37 
38 @interface ANTLRUnbufferedTokenStream : ANTLRLookaheadStream {
39 	id<ANTLRTokenSource> tokenSource;
40     NSInteger tokenIndex; // simple counter to set token index in tokens
41     NSInteger channel;
42 }
43 
44 @property (retain, getter=getTokenSource, setter=setTokenSource:) id<ANTLRTokenSource> tokenSource;
45 @property (getter=getTokenIndex, setter=setTokenIndex) NSInteger tokenIndex;
46 @property (getter=getChannel, setter=setChannel:) NSInteger channel;
47 
48 + (ANTLRUnbufferedTokenStream *)newANTLRUnbufferedTokenStream:(id<ANTLRTokenSource>)aTokenSource;
49 - (id) init;
50 - (id) initWithTokenSource:(id<ANTLRTokenSource>)aTokenSource;
51 
52 - (id<ANTLRToken>)nextElement;
53 - (BOOL)isEOF:(id<ANTLRToken>) aToken;
54 - (id<ANTLRTokenSource>)getTokenSource;
55 - (NSString *)toStringFromStart:(NSInteger)aStart ToEnd:(NSInteger)aStop;
56 - (NSString *)toStringFromToken:(id<ANTLRToken>)aStart ToEnd:(id<ANTLRToken>)aStop;
57 - (NSInteger)LA:(NSInteger)anIdx;
58 - (id<ANTLRToken>)objectAtIndex:(NSInteger)anIdx;
59 - (NSString *)getSourceName;
60 
61 
62 @end
63