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      1 //
      2 //  ANTLRTreePatternLexer.h
      3 //  ANTLR
      4 //
      5 //  Created by Alan Condit on 6/18/10.
      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 
     34 typedef enum {
     35 	ANTLRLexerTokenTypeEOF = -1,
     36 	ANTLRLexerTokenTypeInvalid,
     37 	ANTLRLexerTokenTypeBEGIN,
     38 	ANTLRLexerTokenTypeEND,
     39 	ANTLRLexerTokenTypeID,
     40 	ANTLRLexerTokenTypeARG,
     41 	ANTLRLexerTokenTypePERCENT,
     42 	ANTLRLexerTokenTypeCOLON,
     43 	ANTLRLexerTokenTypeDOT,
     44 } ANTLRLexerTokenType;
     45 
     46 
     47 @interface ANTLRTreePatternLexer : NSObject {
     48 
     49 /** The tree pattern to lex like "(A B C)" */
     50 NSString *pattern;
     51 
     52 /** Index into input string */
     53 NSInteger p;
     54 
     55 /** Current char */
     56 NSInteger c;
     57 
     58 /** How long is the pattern in char? */
     59 NSInteger n;
     60 
     61 /** Set when token type is ID or ARG (name mimics Java's StreamTokenizer) */
     62 NSMutableData *sval;
     63 __strong char *data;
     64 
     65 BOOL error;
     66 
     67 }
     68 
     69 @property (retain) NSString *pattern;
     70 @property (assign) NSInteger p;
     71 @property (assign) NSInteger c;
     72 @property (assign) NSInteger n;
     73 @property (retain, getter=getSval, setter=setSval:) NSMutableData *sval;
     74 @property (assign) char *data;
     75 @property (assign) BOOL error;
     76 
     77 + (ANTLRTreePatternLexer *)newANTLRTreePatternLexer:(NSString *)aPattern;
     78 - (id) init;
     79 - (id) initWithPattern:(NSString *)aPattern;
     80 
     81 - (void) dealloc;
     82 - (NSInteger) nextToken;
     83 - (void) consume;
     84 - (NSString *)toString;
     85 
     86 - (NSMutableData *)getSval;
     87 - (void) setSval:(NSMutableData *)aSval;
     88 
     89 @end
     90