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 "ANTLRBaseRecognizer.h" 29#import "ANTLRCharStream.h" 30#import "ANTLRNoViableAltException.h" 31 32@interface ANTLRDFA : NSObject { 33 // the tables are set by subclasses to their own static versions. 34 const int *eot; 35 const int *eof; 36 const unichar *min; 37 const unichar *max; 38 const int *accept; 39 const int *special; 40 const int **transition; 41 42 ANTLRBaseRecognizer *recognizer; 43 NSInteger decisionNumber; 44 NSInteger len; 45} 46 47@property (retain, getter=getRecognizer,setter=setRecognizer:) ANTLRBaseRecognizer *recognizer; 48@property (assign, getter=getDecision,setter=setDecision:) NSInteger decisionNumber; 49@property (assign, getter=getLen,setter=setLen:) NSInteger len; 50 51- (id) initWithRecognizer:(id) theRecognizer; 52// simulate the DFA using the static tables and predict an alternative 53- (NSInteger) predict:(id<ANTLRCharStream>)anInput; 54- (void) noViableAlt:(NSInteger)state Stream:(id<ANTLRIntStream>)anInput; 55 56- (NSInteger) specialStateTransition:(NSInteger)state Stream:(id<ANTLRIntStream>)anInput; 57// - (NSInteger) specialStateTransition:(NSInteger) state; 58//- (unichar) specialTransition:(unichar) state symbol:(NSInteger) symbol; 59 60// hook for debugger support 61- (void) error:(ANTLRNoViableAltException *)nvae; 62 63- (NSString *) description; 64- (BOOL) evaluateSyntacticPredicate:(SEL)synpredFragment; 65 66+ (void) setIsEmittingDebugInfo:(BOOL) shouldEmitDebugInfo; 67 68- (NSInteger)getDecision; 69- (void)setDecision:(NSInteger)aDecison; 70 71- (ANTLRBaseRecognizer *)getRecognizer; 72- (void)setRecognizer:(ANTLRBaseRecognizer *)aRecognizer; 73- (NSInteger)length; 74 75@end 76