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    /*	$OpenBSD: yacc.c,v 1.9 2012/03/04 04:05:15 fgsch Exp $	*/  | 
    
    
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    /*	$NetBSD: yacc.c,v 1.3 1995/03/26 20:14:12 glass Exp $	*/  | 
    
    
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    /*  | 
    
    
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     * Copyright (c) 1987, 1993, 1994  | 
    
    
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     *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors  | 
    
    
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     *    may be used to endorse or promote products derived from this software  | 
    
    
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     *    without specific prior written permission.  | 
    
    
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     *  | 
    
    
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     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND  | 
    
    
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     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  | 
    
    
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     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  | 
    
    
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     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE  | 
    
    
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     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  | 
    
    
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     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  | 
    
    
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     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  | 
    
    
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     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT  | 
    
    
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     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  | 
    
    
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     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF  | 
    
    
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     * SUCH DAMAGE.  | 
    
    
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     */  | 
    
    
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    #include <ctype.h>  | 
    
    
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    #include <limits.h>  | 
    
    
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    #include <stdio.h>  | 
    
    
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    #include <string.h>  | 
    
    
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    #include "ctags.h"  | 
    
    
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    /*  | 
    
    
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     * y_entries:  | 
    
    
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     *	find the yacc tags and put them in.  | 
    
    
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     */  | 
    
    
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    void  | 
    
    
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    y_entries(void)  | 
    
    
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    { | 
    
    
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    	int	c;  | 
    
    
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    	char	*sp;  | 
    
    
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    	bool	in_rule;  | 
    
    
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    	char	tok[MAXTOKEN];  | 
    
    
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    	in_rule = NO;  | 
    
    
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    	while (GETC(!=, EOF))  | 
    
    
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    		switch (c) { | 
    
    
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    		case '\n':  | 
    
    
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    			SETLINE;  | 
    
    
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    			/* FALLTHROUGH */  | 
    
    
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    		case ' ':  | 
    
    
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    		case '\f':  | 
    
    
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    		case '\r':  | 
    
    
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    		case '\t':  | 
    
    
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    			break;  | 
    
    
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    		case '{': | 
    
    
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    			if (skip_key('}')) | 
    
    
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    				in_rule = NO;  | 
    
    
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    			break;  | 
    
    
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    		case '\'':  | 
    
    
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    		case '"':  | 
    
    
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    			if (skip_key(c))  | 
    
    
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    				in_rule = NO;  | 
    
    
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    			break;  | 
    
    
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    		case '%':  | 
    
    
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    			if (GETC(==, '%'))  | 
    
    
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    				return;  | 
    
    
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    			(void)ungetc(c, inf);  | 
    
    
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    			break;  | 
    
    
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    		case '/':  | 
    
    
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    			if (GETC(==, '*'))  | 
    
    
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    				skip_comment('*'); | 
    
    
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    			else  | 
    
    
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    				(void)ungetc(c, inf);  | 
    
    
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    			break;  | 
    
    
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    		case '|':  | 
    
    
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    		case ';':  | 
    
    
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    			in_rule = NO;  | 
    
    
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    			break;  | 
    
    
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    		default:  | 
    
    
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    			if (in_rule || (!isalpha(c) && c != '.' && c != '_'))  | 
    
    
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    				break;  | 
    
    
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    			sp = tok;  | 
    
    
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    			*sp++ = c;  | 
    
    
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    			while (GETC(!=, EOF) && (intoken(c) || c == '.'))  | 
    
    
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    				*sp++ = c;  | 
    
    
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    			*sp = EOS;  | 
    
    
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    			get_line();		/* may change before ':' */  | 
    
    
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    			while (iswhite(c)) { | 
    
    
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    				if (c == '\n')  | 
    
    
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    					SETLINE;  | 
    
    
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    				if (GETC(==, EOF))  | 
    
    
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    					return;  | 
    
    
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    			}  | 
    
    
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    			if (c == ':') { | 
    
    
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    				pfnote(tok, lineno);  | 
    
    
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    				in_rule = YES;  | 
    
    
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    			}  | 
    
    
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    			else  | 
    
    
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    				(void)ungetc(c, inf);  | 
    
    
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    		}  | 
    
    
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    }  | 
    
    
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    /*  | 
    
    
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     * toss_yysec --  | 
    
    
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     *	throw away lines up to the next "\n%%\n"  | 
    
    
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     */  | 
    
    
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    void  | 
    
    
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    toss_yysec(void)  | 
    
    
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    { | 
    
    
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    	int	c;			/* read character */  | 
    
    
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    	int	state;  | 
    
    
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    	/*  | 
    
    
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    	 * state == 0 : waiting  | 
    
    
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    	 * state == 1 : received a newline  | 
    
    
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    	 * state == 2 : received first %  | 
    
    
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    	 * state == 3 : received second %  | 
    
    
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    	 */  | 
    
    
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    	lineftell = ftell(inf);  | 
    
    
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    	for (state = 0; GETC(!=, EOF);)  | 
    
    
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    		switch (c) { | 
    
    
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    		case '\n':  | 
    
    
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    			++lineno;  | 
    
    
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    			lineftell = ftell(inf);  | 
    
    
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    			if (state == 3)		/* done! */  | 
    
    
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    				return;  | 
    
    
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    			state = 1;		/* start over */  | 
    
    
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    			break;  | 
    
    
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    		case '%':  | 
    
    
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    			if (state)		/* if 1 or 2 */  | 
    
    
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    				++state;	/* goto 3 */  | 
    
    
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    			break;  | 
    
    
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    		default:  | 
    
    
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    			state = 0;		/* reset */  | 
    
    
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    			break;  | 
    
    
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    		}  | 
    
    
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    }  |