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%{
/*
* libiio - Library for interfacing industrial I/O (IIO) devices
*
* Copyright (C) 2014 Analog Devices, Inc.
* Author: Paul Cercueil <paul.cercueil@analog.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* */
#include "parser.h"
#include "ops.h"
#include <string.h>
%}
%option noyywrap reentrant bison-bridge nounistd nounput noinput
WORD (([[:alpha:]]+,)|(iio:))?(-|_|\.|[[:alnum:]])+
%s WANT_DEVICE
%s WANT_CHN_OR_ATTR
%s WANT_CHN
%s WANT_ATTR
%s WANT_VALUE
%%
<INITIAL>VERSION|version {
return VERSION;
}
<INITIAL>PRINT|print {
return PRINT;
}
<INITIAL>EXIT|exit|QUIT|quit {
return EXIT;
}
<INITIAL>HELP|help {
return HELP;
}
<INITIAL>TIMEOUT|timeout {
return TIMEOUT;
}
<INITIAL>OPEN|open {
BEGIN(WANT_DEVICE);
return OPEN;
}
<INITIAL>CLOSE|close {
BEGIN(WANT_DEVICE);
return CLOSE;
}
<INITIAL>READ|read {
BEGIN(WANT_DEVICE);
return READ;
}
<INITIAL>READBUF|readbuf {
BEGIN(WANT_DEVICE);
return READBUF;
}
<INITIAL>WRITEBUF|writebuf {
BEGIN(WANT_DEVICE);
return WRITEBUF;
}
<INITIAL>WRITE|write {
BEGIN(WANT_DEVICE);
return WRITE;
}
<INITIAL>SETTRIG|settrig {
BEGIN(WANT_DEVICE);
return SETTRIG;
}
<INITIAL>GETTRIG|gettrig {
BEGIN(WANT_DEVICE);
return GETTRIG;
}
<INITIAL>SET|set {
BEGIN(WANT_DEVICE);
return SET;
}
<WANT_DEVICE>{WORD} {
struct parser_pdata *pdata = yyget_extra(yyscanner);
struct iio_device *dev = iio_context_find_device(pdata->ctx, yytext);
yylval->dev = dev;
pdata->dev = dev;
BEGIN(WANT_CHN_OR_ATTR);
return DEVICE;
}
<WANT_CHN_OR_ATTR>BUFFERS_COUNT|buffers_count {
BEGIN(WANT_VALUE);
return BUFFERS_COUNT;
}
<WANT_CHN_OR_ATTR>DEBUG|debug {
BEGIN(WANT_ATTR);
return DEBUG_ATTR;
}
<WANT_CHN_OR_ATTR>BUFFER|buffer {
BEGIN(WANT_ATTR);
return BUFFER_ATTR;
}
<WANT_CHN_OR_ATTR>INPUT|input|OUTPUT|output {
struct parser_pdata *pdata = yyget_extra(yyscanner);
pdata->channel_is_output = yytext[0] == 'o' || yytext[0] == 'O';
BEGIN(WANT_CHN);
return IN_OUT;
}
<WANT_CHN>{WORD} {
struct parser_pdata *pdata = yyget_extra(yyscanner);
struct iio_channel *chn = NULL;
if (pdata->dev)
chn = iio_device_find_channel(pdata->dev,
yytext, pdata->channel_is_output);
yylval->chn = chn;
pdata->chn = chn;
BEGIN(WANT_ATTR);
return CHANNEL;
}
<WANT_VALUE>{WORD} {
yylval->value = strtol(yytext, NULL, 10);
return VALUE;
}
CYCLIC|cyclic {
return CYCLIC;
}
{WORD} {
yylval->word = strdup(yytext);
return WORD;
}
[ \t]+ {
return SPACE;
}
[ \t]*\r?\n {
BEGIN(INITIAL);
return END;
}
. {
BEGIN(INITIAL);
}
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