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lex.l revision 1.5 
      1 /*	$NetBSD: lex.l,v 1.5 2009/10/28 22:09:02 christos Exp $	*/
      2 
      3 %{
      4 /*-
      5  * Copyright (c)2003 Citrus Project,
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #if HAVE_NBTOOL_CONFIG_H
     31 #include "nbtool_config.h"
     32 #endif
     33 
     34 #include <sys/cdefs.h>
     35 #if !defined(lint)
     36 __RCSID("$NetBSD: lex.l,v 1.5 2009/10/28 22:09:02 christos Exp $");
     37 #endif /* not lint */
     38 
     39 #include <assert.h>
     40 #include <errno.h>
     41 #include <limits.h>
     42 #include <stdio.h>
     43 #include <stdlib.h>
     44 #include <string.h>
     45 #include <machine/endian.h>
     46 
     47 #include "ldef.h"
     48 #include "yacc.h"
     49 
     50 int line_number = 1;
     51 
     52 #define YY_NO_UNPUT
     53 
     54 %}
     55 
     56 %x	COMMENT
     57 
     58 %%
     59 
     60 [ \t]+	{ }
     61 #.*[\n]|"//".*[\n]|[\n]	{ line_number++; return (R_LN); }
     62 
     63 "/*"		{ BEGIN COMMENT; }
     64 <COMMENT>"*/"	{ BEGIN 0; }
     65 <COMMENT>[\n]	{ line_number++; }
     66 <COMMENT>.	{ }
     67 <COMMENT><<EOF>>	{
     68 		yyerror("unexpected file end (unterminate comment)\n");
     69 		exit(1);
     70 	}
     71 
     72 "="|"/"|"-"	{ return (int)yytext[0]; }
     73 
     74 ([1-9][0-9]*)|(0[0-9]*)|(0[xX][0-9A-Fa-f]+)	{
     75 		yylval.i_value = strtoul(yytext, NULL, 0);
     76 		return L_IMM;
     77 	}
     78 
     79 "TYPE"		{ return (R_TYPE); }
     80 "NAME"		{ return (R_NAME); }
     81 "SRC_ZONE"	{ return (R_SRC_ZONE); }
     82 "DST_INVALID"	{ return (R_DST_INVALID); }
     83 "DST_ILSEQ"	{ return (R_DST_ILSEQ); }
     84 "DST_UNIT_BITS"	{ return (R_DST_UNIT_BITS); }
     85 "BEGIN_MAP"	{ return (R_BEGIN_MAP); }
     86 "END_MAP"	{ return (R_END_MAP); }
     87 "INVALID"	{ return (R_INVALID); }
     88 "ILSEQ"		{ return (R_ILSEQ); }
     89 "OOB_MODE"	{ return (R_OOB_MODE); }
     90 "ROWCOL"	{ return (R_ROWCOL); }
     91 
     92 \"([^\"\n]*(\\\")?)*\"|\'([^\'\n]*(\\\')?)*\'	{
     93 		size_t len;
     94 		len = strlen(yytext);
     95 		yylval.s_value = malloc(len-1);
     96 		strlcpy(yylval.s_value, yytext+1, len-1);
     97 		return L_STRING;
     98 	}
     99 [^ =/\-0-9\t\n][^ \t\n]*	{
    100 		yylval.s_value = strdup(yytext);
    101 		return L_STRING;
    102 	}
    103 
    104 %%
    105 
    106 #ifndef yywrap
    107 int
    108 yywrap(void)
    109 {
    110 	return (1);
    111 }
    112 #endif
    113