[Boost-users] boost.preprocessor BOOST_PP_SEQ_FOR_EACH shows strange error messages

Subject: [Boost-users] boost.preprocessor BOOST_PP_SEQ_FOR_EACH shows strange error messages
From: aliko (ali.tlisov_at_[hidden])
Date: 2011-08-07 04:52:48

Hi!
I'm trying to utilize preprocessor library for the first time and my 
questions probably are too stupid for this list but I have not found 
another place to ask.:)
In series of projects I have a repetitive task with defining many 
variables and structures based on configuration of embedded platform.
First I've tried to generate array of numbers from ADC, the main 
definition from which all the variables and structures should be 
created. But I've got a strange error messages which I can't interpret 
right way.

My code is:
**********************************************************************
#include <boost/preprocessor/seq.hpp>
#include <boost/preprocessor/tuple.hpp>

#define POS_NAME   0
#define POS_PIN    1
#define POS_SKIP   2
#define POS_K      3
#define POS_TYPES  4
#define POS_SCALES 5

#define NFIELDS    6

#define NSIGS 5

enum {DISCRETE, ANALOG, CONTROL, MEASURE, END_TYPES};

//NAME, PIN, SKIP, FILTERK, DATATYPES, SCALES
#define ADC (                                           \
(POSITION, 0, 0, 100, (ANALOG, CONTROL, MEASURE),       \
     (((DISCRETE, ANALOG) (1000, 4000) (0, 20000))    \
      ((ANALOG, CONTROL) (4000, 20000) (0, 10000))    \
      ((ANALOG, MEASURE) (4000, 20000) (0, 3000)))),   \
(CURRENT, 1, 0, 100, (ANALOG, CONTROL),                 \
     (((DISCRETE, ANALOG) (1000, 4000) (0, 20000))    \
      ((ANALOG, CONTROL) (4000, 20000) (0, 10000)))),  \
(HALL, 2, 0, 100, (ANALOG, CONTROL),                    \
     (((DISCRETE, ANALOG) (1000, 4000) (0, 20000))    \
      ((ANALOG, CONTROL) (4000, 20000) (0, 10000)))),  \
(PRESSURE, 4, 0, 100, (ANALOG, CONTROL, MEASURE),       \
     (((DISCRETE, ANALOG), (1000, 4000) (0, 20000))    \
      ((ANALOG, CONTROL) (4000, 20000) (0, 10000))    \
      ((ANALOG, MEASURE) (4000, 20000) (0, 3000)))),   \
(TEMPERATURE, 10, 0, 100, (CONTROL, MEASURE),           \
     (((DISCRETE, CONTROL) (1000, 4000) (0, 20000))   \
      ((CONTROL, MEASURE) (4000, 20000) (0, 3000))))   \
)

#define WITH_NUMBERS(Z0, Z1, SEQ) BOOST_PP_SEQ_ELEM(1, SEQ), 
BOOST_PP_SEQ_ELEM(2, SEQ),

#define TO_NUMBERS(Z0, Z1, SEQ) BOOST_PP_SEQ_FOR_EACH(WITH_NUMBERS, _, SEQ)

#define TO_SCALES(Z0, Z1, TUPLE) BOOST_PP_SEQ_FOR_EACH(TO_NUMBERS, _, 
BOOST_PP_TUPLE_ELEM(NFIELDS, POS_SCALES, TUPLE))

unsigned int bounds[] = {BOOST_PP_SEQ_FOR_EACH(TO_SCALES, _, 
BOOST_PP_TUPLE_TO_SEQ(NSIGS, ADC))};
**********************************************************************

The errors are:
./test_preprocess.cpp:56:1: error: ‘TO_NUMBERS’ was not declared in this 
scope
./test_preprocess.cpp:56:1: error: ‘_’ was not declared in this scope
./test_preprocess.cpp:56:1: error: ‘(0, (._74)1u)’ cannot be used as a 
function
./test_preprocess.cpp:56:1: error: ‘(0, (._74)2u)’ cannot be used as a 
function
./test_preprocess.cpp:56:1: error: ‘(0, (._74)3u)’ cannot be used as a 
function
./test_preprocess.cpp:56:1: error: ‘BOOST_PP_SEQ_FOR_EACH’ was not 
declared in this scope
... end so on
Why it's not sees TO_NUMBERS definition?