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
34typedef 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)" */
50NSString *pattern;
51
52/** Index into input string */
53NSInteger p;
54
55/** Current char */
56NSInteger c;
57
58/** How long is the pattern in char? */
59NSInteger n;
60
61/** Set when token type is ID or ARG (name mimics Java's StreamTokenizer) */
62NSMutableData *sval;
63__strong char *data;
64
65BOOL 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