1 |
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2 | // Copyright Aleksey Gurtovoy 2001-2004
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3 | // Copyright David Abrahams 2001-2002
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4 | //
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5 | // Distributed under the Boost Software License, Version 1.0.
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6 | // (See accompanying file LICENSE_1_0.txt or copy at
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7 | // http://www.boost.org/LICENSE_1_0.txt)
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8 | //
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9 |
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10 | // Preprocessed version of "boost/mpl/aux_/iter_fold_if_impl.hpp" header
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11 | // -- DO NOT modify by hand!
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12 |
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13 | namespace boost { namespace mpl { namespace aux {
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14 |
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15 | template< typename Iterator, typename State >
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16 | struct iter_fold_if_null_step
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17 | {
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18 | typedef State state;
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19 | typedef Iterator iterator;
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20 | };
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21 |
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22 | template< bool >
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23 | struct iter_fold_if_step_impl
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24 | {
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25 | template<
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26 | typename Iterator
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27 | , typename State
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28 | , typename StateOp
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29 | , typename IteratorOp
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30 | >
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31 | struct result_
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32 | {
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33 | typedef typename apply2< StateOp,State,Iterator >::type state;
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34 | typedef typename IteratorOp::type iterator;
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35 | };
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36 | };
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37 |
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38 | template<>
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39 | struct iter_fold_if_step_impl<false>
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40 | {
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41 | template<
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42 | typename Iterator
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43 | , typename State
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44 | , typename StateOp
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45 | , typename IteratorOp
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46 | >
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47 | struct result_
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48 | {
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49 | typedef State state;
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50 | typedef Iterator iterator;
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51 | };
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52 | };
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53 |
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54 | template<
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55 | typename Iterator
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56 | , typename State
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57 | , typename ForwardOp
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58 | , typename Predicate
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59 | >
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60 | struct iter_fold_if_forward_step
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61 | {
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62 | typedef typename apply2< Predicate,State,Iterator >::type not_last;
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63 | typedef typename iter_fold_if_step_impl<
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64 | BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value
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65 | >::template result_< Iterator,State,ForwardOp, mpl::next<Iterator> > impl_;
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66 |
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67 | typedef typename impl_::state state;
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68 | typedef typename impl_::iterator iterator;
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69 | };
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70 |
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71 | template<
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72 | typename Iterator
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73 | , typename State
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74 | , typename BackwardOp
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75 | , typename Predicate
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76 | >
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77 | struct iter_fold_if_backward_step
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78 | {
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79 | typedef typename apply2< Predicate,State,Iterator >::type not_last;
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80 | typedef typename iter_fold_if_step_impl<
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81 | BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value
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82 | >::template result_< Iterator,State,BackwardOp, identity<Iterator> > impl_;
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83 |
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84 | typedef typename impl_::state state;
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85 | typedef typename impl_::iterator iterator;
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86 | };
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87 |
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88 | template<
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89 | typename Iterator
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90 | , typename State
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91 | , typename ForwardOp
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92 | , typename ForwardPredicate
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93 | , typename BackwardOp
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94 | , typename BackwardPredicate
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95 | >
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96 | struct iter_fold_if_impl
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97 | {
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98 | private:
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99 | typedef iter_fold_if_null_step< Iterator,State > forward_step0;
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100 | typedef iter_fold_if_forward_step< typename forward_step0::iterator, typename forward_step0::state, ForwardOp, ForwardPredicate > forward_step1;
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101 | typedef iter_fold_if_forward_step< typename forward_step1::iterator, typename forward_step1::state, ForwardOp, ForwardPredicate > forward_step2;
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102 | typedef iter_fold_if_forward_step< typename forward_step2::iterator, typename forward_step2::state, ForwardOp, ForwardPredicate > forward_step3;
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103 | typedef iter_fold_if_forward_step< typename forward_step3::iterator, typename forward_step3::state, ForwardOp, ForwardPredicate > forward_step4;
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104 |
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105 |
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106 | typedef typename if_<
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107 | typename forward_step4::not_last
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108 | , iter_fold_if_impl<
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109 | typename forward_step4::iterator
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110 | , typename forward_step4::state
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111 | , ForwardOp
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112 | , ForwardPredicate
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113 | , BackwardOp
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114 | , BackwardPredicate
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115 | >
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116 | , iter_fold_if_null_step<
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117 | typename forward_step4::iterator
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118 | , typename forward_step4::state
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119 | >
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120 | >::type backward_step4;
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121 |
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122 | typedef iter_fold_if_backward_step< typename forward_step3::iterator, typename backward_step4::state, BackwardOp, BackwardPredicate > backward_step3;
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123 | typedef iter_fold_if_backward_step< typename forward_step2::iterator, typename backward_step3::state, BackwardOp, BackwardPredicate > backward_step2;
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124 | typedef iter_fold_if_backward_step< typename forward_step1::iterator, typename backward_step2::state, BackwardOp, BackwardPredicate > backward_step1;
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125 | typedef iter_fold_if_backward_step< typename forward_step0::iterator, typename backward_step1::state, BackwardOp, BackwardPredicate > backward_step0;
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126 |
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127 |
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128 | public:
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129 | typedef typename backward_step0::state state;
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130 | typedef typename backward_step4::iterator iterator;
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131 | };
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132 |
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133 | }}}
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