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130 lines
3.2 KiB
Plaintext
130 lines
3.2 KiB
Plaintext
%{
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/*
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* Copyright (c) 1998 - 2000 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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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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*
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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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*
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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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*
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* 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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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/* $FreeBSD$ */
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/*
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* This is to handle the definition of this symbol in some AIX
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* headers, which will conflict with the definition that lex will
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* generate for it. It's only a problem for AIX lex.
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*/
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#undef ECHO
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#include "compile_et.h"
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#include "parse.h"
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#include "lex.h"
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#if 0
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RCSID("$Id: lex.l,v 1.6 2000/06/22 00:42:52 assar Exp $");
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#endif
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static unsigned lineno = 1;
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static int getstring(void);
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#define YY_NO_UNPUT
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#undef ECHO
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%}
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%%
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et { return ET; }
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error_table { return ET; }
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ec { return EC; }
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error_code { return EC; }
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prefix { return PREFIX; }
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index { return INDEX; }
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id { return ID; }
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end { return END; }
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[0-9]+ { yylval.number = atoi(yytext); return NUMBER; }
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#[^\n]* ;
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[ \t] ;
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\n { lineno++; }
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\" { return getstring(); }
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[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return STRING; }
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. { return *yytext; }
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%%
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#ifndef yywrap /* XXX */
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int
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yywrap ()
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{
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return 1;
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}
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#endif
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static int
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getstring(void)
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{
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char x[128];
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int i = 0;
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int c;
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int quote = 0;
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while((c = input()) != EOF){
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if(quote) {
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x[i++] = c;
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quote = 0;
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continue;
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}
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if(c == '\n'){
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error_message("unterminated string");
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lineno++;
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break;
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}
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if(c == '\\'){
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quote++;
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continue;
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}
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if(c == '\"')
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break;
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x[i++] = c;
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}
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x[i] = '\0';
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yylval.string = strdup(x);
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return STRING;
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}
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void
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error_message (const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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fprintf (stderr, "%s:%d:", filename, lineno);
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vfprintf (stderr, format, args);
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va_end (args);
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numerror++;
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}
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