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%{
/*
* Copyright (c) 1998 - 2000 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* This is to handle the definition of this symbol in some AIX
* headers, which will conflict with the definition that lex will
* generate for it. It's only a problem for AIX lex.
*/
#undef ECHO
#include "compile_et.h"
#include "parse.h"
#include "lex.h"
RCSID("$Id: lex.l,v 1.8 2005/05/16 08:52:54 lha Exp $");
static unsigned lineno = 1;
static int getstring(void);
#define YY_NO_UNPUT
#undef ECHO
%}
%%
et { return ET; }
error_table { return ET; }
ec { return EC; }
error_code { return EC; }
prefix { return PREFIX; }
index { return INDEX; }
id { return ID; }
end { return END; }
[0-9]+ { yylval.number = atoi(yytext); return NUMBER; }
#[^\n]* ;
[ \t] ;
\n { lineno++; }
\" { return getstring(); }
[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return STRING; }
. { return *yytext; }
%%
#ifndef yywrap /* XXX */
int
yywrap ()
{
return 1;
}
#endif
static int
getstring(void)
{
char x[128];
int i = 0;
int c;
int quote = 0;
while(i < sizeof(x) - 1 && (c = input()) != EOF){
if(quote) {
x[i++] = c;
quote = 0;
continue;
}
if(c == '\n'){
error_message("unterminated string");
lineno++;
break;
}
if(c == '\\'){
quote++;
continue;
}
if(c == '\"')
break;
x[i++] = c;
}
x[i] = '\0';
yylval.string = strdup(x);
if (yylval.string == NULL)
err(1, "malloc");
return STRING;
}
void
error_message (const char *format, ...)
{
va_list args;
va_start (args, format);
fprintf (stderr, "%s:%d:", filename, lineno);
vfprintf (stderr, format, args);
va_end (args);
numerror++;
}
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