2011/8/7 aliko <ali.tlisov@gmail.com>

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?

BOOST_PP_SEQ_FOR_EACH cannot be used recursively, I have no solution :/