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90 lines
2.7 KiB
90 lines
2.7 KiB
4 months ago
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// TreePatternLexer.h
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// ANTLR
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//
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// Created by Alan Condit on 6/18/10.
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// [The "BSD licence"]
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// Copyright (c) 2010 Alan Condit
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. The name of the author may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import <Foundation/Foundation.h>
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typedef enum {
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LexerTokenTypeEOF = -1,
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LexerTokenTypeInvalid,
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LexerTokenTypeBEGIN,
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LexerTokenTypeEND,
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LexerTokenTypeID,
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LexerTokenTypeARG,
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LexerTokenTypePERCENT,
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LexerTokenTypeCOLON,
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LexerTokenTypeDOT,
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} LexerTokenType;
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@interface TreePatternLexer : NSObject {
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/** The tree pattern to lex like "(A B C)" */
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NSString *pattern;
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/** Index into input string */
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NSInteger p;
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/** Current char */
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NSInteger c;
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/** How long is the pattern in char? */
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NSInteger n;
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/** Set when token type is ID or ARG (name mimics Java's StreamTokenizer) */
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NSMutableData *sval;
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__strong char *data;
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BOOL error;
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}
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@property (retain) NSString *pattern;
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@property (assign) NSInteger p;
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@property (assign) NSInteger c;
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@property (assign) NSInteger n;
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@property (retain, getter=getSval, setter=setSval:) NSMutableData *sval;
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@property (assign) char *data;
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@property (assign) BOOL error;
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+ (TreePatternLexer *)newTreePatternLexer:(NSString *)aPattern;
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- (id) init;
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- (id) initWithPattern:(NSString *)aPattern;
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- (void) dealloc;
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- (NSInteger) nextToken;
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- (void) consume;
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- (NSString *)toString;
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- (NSMutableData *)getSval;
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- (void) setSval:(NSMutableData *)aSval;
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@end
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