scan_citi.l

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/* -*-c-*- */

%{
/*
 * scan_citi.l - scanner for CITIfiles
 *
 * Copyright (C) 2006 Stefan Jahn <stefan@lkcc.org>
 *
 * This is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this package; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * $Id$
 *
 */

#if HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#ifdef __MINGW32__
#include <io.h>
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include "logging.h"
#include "complex.h"
#include "object.h"
#include "vector.h"
#include "dataset.h"
#include "check_citi.h"
#include "tokens_citi.h"

using namespace qucs;

%}

WS       [ \t\n\r]
ID       [a-zA-Z_][a-zA-Z0-9_\.]*
DIGIT    [0-9]
EXPONENT [Ee][+-]?{DIGIT}+
INT      [+-]?{DIGIT}+
FLOAT1   [+-]?{DIGIT}+{EXPONENT}
FLOAT2   [+-]?{DIGIT}*"."{DIGIT}+({EXPONENT})?
SPACE    [ \t]
EOL      \r?\n

%x COMMENTS FLOATS LISTS DATAS VALUES
%option yylineno noyywrap nounput prefix="citi_"

%%

<INITIAL,FLOATS,LISTS>{EOL}+ { /* detect end of line */ return Eol; }

<*>{SPACE} /* skip spaces */

<INITIAL,DATAS>{INT} { /* identify integer */
    citi_lval.d = strtol (citi_text, NULL, 10);
    return Integer;
  }

<INITIAL>[a-zA-Z]"."{DIGIT}+"."{DIGIT}+ {
    return Version;
  }

<INITIAL,DATAS>("RI"|"MAG"|"MAGANGLE"|"DBANGLE") {
    citi_lval.ident = strdup (citi_text);
    return VarType;
  }

<INITIAL>^"CITIFILE" { return CITIFILE; }
<INITIAL>^"VAR"      { return VAR; }
<INITIAL>^"DATA"     { BEGIN(DATAS); return DATA; }
<INITIAL>^"NAME"     { return NAME; }
<INITIAL>^"BEGIN"    { BEGIN(FLOATS); return Begin; }
<INITIAL>^"CONSTANT" { BEGIN(VALUES); return CONSTANT; }
<INITIAL>^"COMMENT"  { BEGIN(COMMENTS); }

<INITIAL>^"SEG_LIST_BEGIN" { BEGIN(LISTS); return SegListBegin; }
<INITIAL>^"VAR_LIST_BEGIN" { BEGIN(LISTS); return VarListBegin; }
<LISTS>^"SEG_LIST_END" { BEGIN(INITIAL); return SegListEnd; }
<LISTS>^"VAR_LIST_END" { BEGIN(INITIAL); return VarListEnd; }
<LISTS>^"SEG" { return SEG; }

<INITIAL,DATAS,VALUES>{ID} { /* identify identifier */
    citi_lval.ident = strdup (citi_text);
    return Identifier;
  }

<FLOATS,LISTS,VALUES>({FLOAT1}|{FLOAT2}|{INT}) { /* identify float */
    citi_lval.f = strtod (citi_text, NULL);
    return Float;
  }

<VALUES>{EOL}+ { BEGIN(INITIAL); return Eol; }

<DATAS>"," { /* pass the ',' to the parser */ return ','; }
<DATAS>"[" { /* pass the '[' to the parser */ return '['; }
<DATAS>"]" { /* pass the ']' to the parser */ BEGIN(INITIAL); return ']'; }
<DATAS>{EOL}+ { BEGIN(INITIAL); return Eol; }

<FLOATS>"," { /* pass the ',' to the parser */ return ','; }

<FLOATS>^"END" { BEGIN(INITIAL); return End; }

<INITIAL>^"#" { /* leave these characters */
    BEGIN(COMMENTS);
  }

<COMMENTS>.      { /* skip any character in here */ }
<COMMENTS>{EOL}+ { BEGIN(INITIAL); /* skipping ends here */ }

<*>. { /* any other character in invalid */
    logprint (LOG_ERROR,
              "line %d: syntax error, unrecognized character: `%s'\n",
              citi_lineno, citi_text);
    return InvalidCharacter;
  }

%%