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