/usr/include/boost/proto/transform/detail/fold_impl.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
#include <boost/proto/transform/detail/preprocessed/fold_impl.hpp>
#elif !defined(BOOST_PP_IS_ITERATING)
#define BOOST_PROTO_CHILD_N_TYPE(N) \
BOOST_PP_CAT(proto_child, N) \
/**/
#define BOOST_PROTO_FOLD_STATE_TYPE(Z, N, DATA) \
typedef \
typename when<_, Fun>::template impl< \
typename result_of::child_c<Expr, N>::type \
, BOOST_PP_CAT(state, N) \
, Data \
>::result_type \
BOOST_PP_CAT(state, BOOST_PP_INC(N)); \
/**/
#define BOOST_PROTO_FOLD_STATE(Z, N, DATA) \
BOOST_PP_CAT(state, BOOST_PP_INC(N)) \
BOOST_PP_CAT(s, BOOST_PP_INC(N)) \
= typename when<_, Fun>::template impl< \
typename result_of::child_c<Expr, N>::type \
, BOOST_PP_CAT(state, N) \
, Data \
>()( \
proto::child_c<N>(e) \
, BOOST_PP_CAT(s, N) \
, d \
); \
/**/
#define BOOST_PROTO_REVERSE_FOLD_STATE_TYPE(Z, N, DATA) \
typedef \
typename when<_, Fun>::template impl< \
typename result_of::child_c< \
Expr \
, BOOST_PP_SUB(DATA, BOOST_PP_INC(N)) \
>::type \
, BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, N)) \
, Data \
>::result_type \
BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, BOOST_PP_INC(N))); \
/**/
#define BOOST_PROTO_REVERSE_FOLD_STATE(Z, N, DATA) \
BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, BOOST_PP_INC(N))) \
BOOST_PP_CAT(s, BOOST_PP_SUB(DATA, BOOST_PP_INC(N))) \
= typename when<_, Fun>::template impl< \
typename result_of::child_c< \
Expr \
, BOOST_PP_SUB(DATA, BOOST_PP_INC(N)) \
>::type \
, BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, N)) \
, Data \
>()( \
proto::child_c<BOOST_PP_SUB(DATA, BOOST_PP_INC(N))>(e) \
, BOOST_PP_CAT(s, BOOST_PP_SUB(DATA, N)) \
, d \
); \
/**/
#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
#pragma wave option(preserve: 2, line: 0, output: "preprocessed/fold_impl.hpp")
#endif
///////////////////////////////////////////////////////////////////////////////
/// \file fold_impl.hpp
/// Contains definition of fold_impl<> and reverse_fold_impl<> templates.
//
// Copyright 2008 Eric Niebler. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
#pragma wave option(preserve: 1)
#endif
#define BOOST_PP_ITERATION_PARAMS_1 \
(3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/detail/fold_impl.hpp>))
#include BOOST_PP_ITERATE()
#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
#pragma wave option(output: null)
#endif
#undef BOOST_PROTO_REVERSE_FOLD_STATE
#undef BOOST_PROTO_REVERSE_FOLD_STATE_TYPE
#undef BOOST_PROTO_FOLD_STATE
#undef BOOST_PROTO_FOLD_STATE_TYPE
#undef BOOST_PROTO_CHILD_N_TYPE
#else
#define N BOOST_PP_ITERATION()
template<typename State0, typename Fun, typename Expr, typename State, typename Data>
struct fold_impl<State0, Fun, Expr, State, Data, N>
: transform_impl<Expr, State, Data>
{
typedef typename when<_, State0>::template impl<Expr, State, Data>::result_type state0;
BOOST_PP_REPEAT(N, BOOST_PROTO_FOLD_STATE_TYPE, N)
typedef BOOST_PP_CAT(state, N) result_type;
result_type operator ()(
typename fold_impl::expr_param e
, typename fold_impl::state_param s
, typename fold_impl::data_param d
) const
{
state0 s0 =
typename when<_, State0>::template impl<Expr, State, Data>()(e, s, d);
BOOST_PP_REPEAT(N, BOOST_PROTO_FOLD_STATE, N)
return BOOST_PP_CAT(s, N);
}
};
template<typename State0, typename Fun, typename Expr, typename State, typename Data>
struct reverse_fold_impl<State0, Fun, Expr, State, Data, N>
: transform_impl<Expr, State, Data>
{
typedef typename when<_, State0>::template impl<Expr, State, Data>::result_type BOOST_PP_CAT(state, N);
BOOST_PP_REPEAT(N, BOOST_PROTO_REVERSE_FOLD_STATE_TYPE, N)
typedef state0 result_type;
result_type operator ()(
typename reverse_fold_impl::expr_param e
, typename reverse_fold_impl::state_param s
, typename reverse_fold_impl::data_param d
) const
{
BOOST_PP_CAT(state, N) BOOST_PP_CAT(s, N) =
typename when<_, State0>::template impl<Expr, State, Data>()(e, s, d);
BOOST_PP_REPEAT(N, BOOST_PROTO_REVERSE_FOLD_STATE, N)
return s0;
}
};
#undef N
#endif
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