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%{
/*
* Copyright 2016 Analog Devices Inc.
* Author: Paul Cercueil <paul.cercueil@analog.com>
*
* 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 3, 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "parser.h"
#define _USE_MATH_DEFINES
#include <math.h>
#include <stdlib.h>
%}
%option noyywrap reentrant bison-bridge nounistd always-interactive
%s WANT_IN_PORT
%s WANT_MULT
%s WANT_TWO_PI
%s WANT_END
%%
<INITIAL>w {
yyless(0);
BEGIN(WANT_IN_PORT);
return '(';
}
<WANT_IN_PORT>w {
yyless(0);
BEGIN(WANT_MULT);
return IN_PORT;
}
<WANT_MULT>w {
yyless(0);
BEGIN(WANT_TWO_PI);
return '*';
}
<WANT_TWO_PI>w {
yyless(0);
yylval->val = 2.0 * M_PI;
BEGIN(WANT_END);
return VALUE;
}
<WANT_END>w {
BEGIN(0);
return ')';
}
(x[0-9])|(t[0-9]) {
yylval->ival = yytext[1] - '0';
return IN_PORT;
}
x|t {
yylval->ival = 0;
return IN_PORT;
}
e {
yylval->val = M_E;
return VALUE;
}
pi {
yylval->val = M_PI;
return VALUE;
}
(\*\*)|^ {
return POWER;
}
[0-9]+([,.][0-9]+)? {
yylval->val = atof(yytext);
return VALUE;
}
[a-z]+[0-9]* {
yylval->fname = strdup(yytext);
return FNAME;
}
[ \t]+ {
}
. {
return *yytext;
}
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