1// [The "BSD licence"] 2// Copyright (c) 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 "ANTLRToken.h" 29#import "ANTLRBitSet.h" 30#import "ANTLRRuleStack.h" 31#import "AMutableArray.h" 32 33@interface ANTLRRecognizerSharedState : NSObject { 34 __strong AMutableArray *following; // a stack of FOLLOW bitsets used for context sensitive prediction and recovery 35 NSInteger _fsp; // Follow stack pointer 36 BOOL errorRecovery; // are we recovering? 37 NSInteger lastErrorIndex; 38 BOOL failed; // indicate that some match failed 39 NSInteger syntaxErrors; 40 NSInteger backtracking; // the level of backtracking 41 __strong ANTLRRuleStack *ruleMemo; // store previous results of matching rules so we don't have to do it again. Hook in incremental stuff here, too. 42 43 __strong id<ANTLRToken> token; 44 NSInteger tokenStartCharIndex; 45 NSUInteger tokenStartLine; 46 NSUInteger tokenStartCharPositionInLine; 47 NSUInteger channel; 48 NSUInteger type; 49 NSString *text; 50} 51 52@property (retain, getter=getFollowing, setter=setFollowing:) AMutableArray *following; 53@property (assign) NSInteger _fsp; 54@property (assign) BOOL errorRecovery; 55@property (assign) NSInteger lastErrorIndex; 56@property (assign, getter=getFailed, setter=setFailed:) BOOL failed; 57@property (assign) NSInteger syntaxErrors; 58@property (assign, getter=getBacktracking, setter=setBacktracking:) NSInteger backtracking; 59@property (retain, getter=getRuleMemo, setter=setRuleMemo:) ANTLRRuleStack *ruleMemo; 60@property (copy, getter=getToken, setter=setToken:) id<ANTLRToken> token; 61@property (getter=type,setter=setType:) NSUInteger type; 62@property (getter=channel,setter=setChannel:) NSUInteger channel; 63@property (getter=getTokenStartLine,setter=setTokenStartLine:) NSUInteger tokenStartLine; 64@property (getter=charPositionInLine,setter=setCharPositionInLine:) NSUInteger tokenStartCharPositionInLine; 65@property (getter=getTokenStartCharIndex,setter=setTokenStartCharIndex:) NSInteger tokenStartCharIndex; 66@property (retain, getter=text, setter=setText:) NSString *text; 67 68+ (ANTLRRecognizerSharedState *) newANTLRRecognizerSharedState; 69+ (ANTLRRecognizerSharedState *) newANTLRRecognizerSharedStateWithRuleLen:(NSInteger)aLen; 70+ (ANTLRRecognizerSharedState *) newANTLRRecognizerSharedState:(ANTLRRecognizerSharedState *)aState; 71 72- (id) init; 73- (id) initWithRuleLen:(NSInteger)aLen; 74- (id) initWithState:(ANTLRRecognizerSharedState *)state; 75 76- (id<ANTLRToken>) getToken; 77- (void) setToken:(id<ANTLRToken>) theToken; 78 79- (NSUInteger)type; 80- (void) setType:(NSUInteger) theTokenType; 81 82- (NSUInteger)channel; 83- (void) setChannel:(NSUInteger) theChannel; 84 85- (NSUInteger) getTokenStartLine; 86- (void) setTokenStartLine:(NSUInteger) theTokenStartLine; 87 88- (NSUInteger) charPositionInLine; 89- (void) setCharPositionInLine:(NSUInteger) theCharPosition; 90 91- (NSInteger) getTokenStartCharIndex; 92- (void) setTokenStartCharIndex:(NSInteger) theTokenStartCharIndex; 93 94- (NSString *)text; 95- (void) setText:(NSString *) theText; 96 97 98- (AMutableArray *) getFollowing; 99- (void)setFollowing:(AMutableArray *)aFollow; 100- (ANTLRRuleStack *) getRuleMemo; 101- (void)setRuleMemo:(ANTLRRuleStack *)aRuleMemo; 102- (BOOL) isErrorRecovery; 103- (void) setIsErrorRecovery: (BOOL) flag; 104 105- (BOOL) getFailed; 106- (void) setFailed: (BOOL) flag; 107 108- (NSInteger) getBacktracking; 109- (void) setBacktracking:(NSInteger) value; 110- (void) increaseBacktracking; 111- (void) decreaseBacktracking; 112- (BOOL) isBacktracking; 113 114- (NSInteger) lastErrorIndex; 115- (void) setLastErrorIndex:(NSInteger) value; 116 117@end 118