xref: /external/antlr/antlr-3.4/runtime/ObjC/Framework/ANTLRDFA.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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// 1. Redistributions of source code must retain the above copyright
//    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 "ANTLRBaseRecognizer.h"
#import "ANTLRCharStream.h"
#import "ANTLRNoViableAltException.h"

@interface ANTLRDFA : NSObject {
	// the tables are set by subclasses to their own static versions.
	const int *eot;
	const int *eof;
	const unichar *min;
	const unichar *max;
	const int *accept;
	const int *special;
	const int **transition;

	__strong ANTLRBaseRecognizer *recognizer;
	NSInteger decisionNumber;
    NSInteger len;
}

- (id) initWithRecognizer:(id) theRecognizer;
// simulate the DFA using the static tables and predict an alternative
- (NSInteger) predict:(id<ANTLRCharStream>)anInput;
- (void) noViableAlt:(NSInteger)state Stream:(id<ANTLRIntStream>)anInput;

- (NSInteger) specialStateTransition:(NSInteger)state Stream:(id<ANTLRIntStream>)anInput;
// - (NSInteger) specialStateTransition:(NSInteger) state;
//- (unichar) specialTransition:(unichar) state symbol:(NSInteger) symbol;

// hook for debugger support
- (void) error:(ANTLRNoViableAltException *)nvae;

- (NSString *) description;
- (BOOL) evaluateSyntacticPredicate:(SEL)synpredFragment;

+ (void) setIsEmittingDebugInfo:(BOOL) shouldEmitDebugInfo;

- (NSInteger)getDecision;
- (void)setDecision:(NSInteger)aDecison;

- (ANTLRBaseRecognizer *)getRecognizer;
- (void)setRecognizer:(ANTLRBaseRecognizer *)aRecognizer;
- (NSInteger)length;

@property const int *eot;
@property const int *eof;
@property const unichar *min;
@property const unichar *max;
@property const int *accept;
@property const int *special;
@property const int **transition;

@property (retain, getter=getRecognizer,setter=setRecognizer:) ANTLRBaseRecognizer *recognizer;
@property (assign, getter=getDecision,setter=setDecision:) NSInteger decisionNumber;
@property (assign, getter=getLen,setter=setLen:) NSInteger len;
@end