instantiate.hpp

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 * $Id: instantiate.hpp 4354 2012-02-10 00:25:18Z mdixon $
 *
 */
#ifndef PCL_IMPL_INSTANTIATE_H_
#define PCL_IMPL_INSTANTIATE_H_

#include <boost/preprocessor/seq/for_each.hpp>
#include <boost/preprocessor/seq/for_each_product.hpp>
#include <boost/preprocessor/seq/to_tuple.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/expand.hpp>

//#define PCL_POINT_TYPES (bool)(int)(float)(double)
//#define PCL_TEMPLATES (Type)(Othertype)

//
// PCL_INSTANTIATE: call to instantiate template TEMPLATE for all
// POINT_TYPES
//
#define PCL_INSTANTIATE_IMPL(r, TEMPLATE, POINT_TYPE) \
  BOOST_PP_CAT(PCL_INSTANTIATE_, TEMPLATE)(POINT_TYPE)

#define PCL_INSTANTIATE(TEMPLATE, POINT_TYPES)        \
  BOOST_PP_SEQ_FOR_EACH(PCL_INSTANTIATE_IMPL, TEMPLATE, POINT_TYPES)


//
// PCL_INSTANTIATE_PRODUCT(templatename, (seq1)(seq2)...(seqN))
//
// instantiate templates
//
// A call to PCL_INSTANTIATE_PRODUCT(T, ((a)(b)) ((d)(e)) ) results in calls
//
//   PCL_INSTANTIATE_T(a, d) 
//   PCL_INSTANTIATE_T(a, e) 
//   PCL_INSTANTIATE_T(b, d) 
//   PCL_INSTANTIATE_T(b, e) 
//
// That is, PCL_INSTANTIATE_T is called for the cartesian product of the sequences seq1 ... seqN
//
// BE CAREFUL WITH YOUR PARENTHESIS!  The argument PRODUCT is a
// sequence of sequences.  e.g. if it were three sequences of,
// 1. letters, 2. numbers, and 3. our favorite transylvanians, it
// would be
//
//    ((x)(y)(z))((1)(2)(3))((dracula)(radu))
//
#ifdef _MSC_VER
#define PCL_INSTANTIATE_PRODUCT_IMPL(r, product) \
  BOOST_PP_CAT(PCL_INSTANTIATE_, BOOST_PP_SEQ_HEAD(product)) \
          BOOST_PP_EXPAND(BOOST_PP_SEQ_TO_TUPLE(BOOST_PP_SEQ_TAIL(product))) 
#else
#define PCL_INSTANTIATE_PRODUCT_IMPL(r, product) \
  BOOST_PP_EXPAND(BOOST_PP_CAT(PCL_INSTANTIATE_, BOOST_PP_SEQ_HEAD(product)) \
      BOOST_PP_SEQ_TO_TUPLE(BOOST_PP_SEQ_TAIL(product)))
#endif


#define PCL_INSTANTIATE_PRODUCT(TEMPLATE, PRODUCT) \
  BOOST_PP_SEQ_FOR_EACH_PRODUCT(PCL_INSTANTIATE_PRODUCT_IMPL, ((TEMPLATE))PRODUCT)


#endif