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1
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2 #ifndef BOOST_MPL_REPLACE_IF_HPP_INCLUDED
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3 #define BOOST_MPL_REPLACE_IF_HPP_INCLUDED
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4
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5 // Copyright Aleksey Gurtovoy 2000-2004
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6 // Copyright John R. Bandela 2000-2002
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7 // Copyright David Abrahams 2003-2004
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8 //
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9 // Distributed under the Boost Software License, Version 1.0.
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10 // (See accompanying file LICENSE_1_0.txt or copy at
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11 // http://www.boost.org/LICENSE_1_0.txt)
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12 //
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13 // See http://www.boost.org/libs/mpl for documentation.
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14
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15 // $Id$
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16 // $Date$
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17 // $Revision$
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18
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19 #include <boost/mpl/transform.hpp>
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20 #include <boost/mpl/apply.hpp>
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21 #include <boost/mpl/if.hpp>
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22 #include <boost/mpl/aux_/inserter_algorithm.hpp>
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23 #include <boost/mpl/aux_/config/forwarding.hpp>
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24
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25 namespace boost { namespace mpl {
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26
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27 namespace aux {
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28
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29 template< typename Predicate, typename T >
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30 struct replace_if_op
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31 {
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32 template< typename U > struct apply
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33 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
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34 : if_<
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35 typename apply1<Predicate,U>::type
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36 , T
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37 , U
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38 >
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39 {
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40 #else
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41 {
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42 typedef typename if_<
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43 typename apply1<Predicate,U>::type
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44 , T
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45 , U
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46 >::type type;
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47 #endif
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48 };
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49 };
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50
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51
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52 template<
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53 typename Sequence
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54 , typename Predicate
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55 , typename T
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56 , typename Inserter
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57 >
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58 struct replace_if_impl
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59 : transform1_impl<
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60 Sequence
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61 , protect< aux::replace_if_op<Predicate,T> >
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62 , Inserter
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63 >
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64 {
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65 };
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66
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67 template<
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68 typename Sequence
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69 , typename Predicate
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70 , typename T
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71 , typename Inserter
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72 >
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73 struct reverse_replace_if_impl
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74 : reverse_transform1_impl<
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75 Sequence
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76 , protect< aux::replace_if_op<Predicate,T> >
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77 , Inserter
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78 >
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79 {
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80 };
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81
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82 } // namespace aux
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83
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84 BOOST_MPL_AUX_INSERTER_ALGORITHM_DEF(4, replace_if)
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85
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86 }}
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87
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88 #endif // BOOST_MPL_REPLACE_IF_HPP_INCLUDED
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