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Viewing changes to boost/boost/preprocessor/list/filter.hpp

  • Committer: Bazaar Package Importer
  • Author(s): LaMont Jones
  • Date: 2004-08-24 07:25:04 UTC
  • Revision ID: james.westby@ubuntu.com-20040824072504-zf993vnevvisdsvb
Tags: upstream-0.9.1
Import upstream version 0.9.1

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boost/boost/preprocessor/list/filter.hpp
 
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# /* Copyright (C) 2001
 
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#  * Housemarque Oy
 
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#  * http://www.housemarque.com
 
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#  *
 
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#  * Permission to copy, use, modify, sell and distribute this software is
 
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#  * granted provided this copyright notice appears in all copies. This
 
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#  * software is provided "as is" without express or implied warranty, and
 
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#  * with no claim as to its suitability for any purpose.
 
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#  */
 
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#
 
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# /* Revised by Paul Mensonides (2002) */
 
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#
 
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# /* See http://www.boost.org for most recent version. */
 
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#
 
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# ifndef BOOST_PREPROCESSOR_LIST_FILTER_HPP
 
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# define BOOST_PREPROCESSOR_LIST_FILTER_HPP
 
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#
 
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# include <boost/preprocessor/config/config.hpp>
 
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# include <boost/preprocessor/control/if.hpp>
 
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# include <boost/preprocessor/list/fold_right.hpp>
 
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# include <boost/preprocessor/tuple/elem.hpp>
 
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# include <boost/preprocessor/tuple/rem.hpp>
 
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#
 
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# /* BOOST_PP_LIST_FILTER */
 
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#
 
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
 
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#    define BOOST_PP_LIST_FILTER(pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
 
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# else
 
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#    define BOOST_PP_LIST_FILTER(pred, data, list) BOOST_PP_LIST_FILTER_I(pred, data, list)
 
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#    define BOOST_PP_LIST_FILTER_I(pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
 
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# endif
 
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#
 
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
 
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#    define BOOST_PP_LIST_FILTER_O(d, pdr, elem) BOOST_PP_LIST_FILTER_O_D(d, BOOST_PP_TUPLE_ELEM(3, 0, pdr), BOOST_PP_TUPLE_ELEM(3, 1, pdr), BOOST_PP_TUPLE_ELEM(3, 2, pdr), elem)
 
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# else
 
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#    define BOOST_PP_LIST_FILTER_O(d, pdr, elem) BOOST_PP_LIST_FILTER_O_I(d, BOOST_PP_TUPLE_REM_3 pdr, elem)
 
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#    define BOOST_PP_LIST_FILTER_O_I(d, im, elem) BOOST_PP_LIST_FILTER_O_D(d, im, elem)
 
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# endif
 
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#
 
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# define BOOST_PP_LIST_FILTER_O_D(d, pred, data, res, elem) (pred, data, BOOST_PP_IF(pred(d, data, elem), (elem, res), res))
 
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#
 
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# /* BOOST_PP_LIST_FILTER_D */
 
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#
 
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# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
 
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#    define BOOST_PP_LIST_FILTER_D(d, pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT_ ## d(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
 
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# else
 
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#    define BOOST_PP_LIST_FILTER_D(d, pred, data, list) BOOST_PP_LIST_FILTER_D_I(d, pred, data, list)
 
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#    define BOOST_PP_LIST_FILTER_D_I(d, pred, data, list) BOOST_PP_TUPLE_ELEM(3, 2, BOOST_PP_LIST_FOLD_RIGHT_ ## d(BOOST_PP_LIST_FILTER_O, (pred, data, BOOST_PP_NIL), list))
 
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# endif
 
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#
 
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# endif