[857] | 1 | // (C) Copyright R.W. Grosse-Kunstleve 2002.
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| 2 | // Distributed under the Boost Software License, Version 1.0. (See
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| 3 | // accompanying file LICENSE_1_0.txt or copy at
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| 4 | // http://www.boost.org/LICENSE_1_0.txt)
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| 5 | #ifndef BOOST_PYTHON_OBJECT_PICKLE_SUPPORT_RWGK20020603_HPP
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| 6 | # define BOOST_PYTHON_OBJECT_PICKLE_SUPPORT_RWGK20020603_HPP
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| 7 |
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| 8 | # include <boost/python/detail/prefix.hpp>
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| 9 |
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| 10 | namespace boost { namespace python {
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| 11 |
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| 12 | namespace api
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| 13 | {
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| 14 | class object;
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| 15 | }
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| 16 | using api::object;
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| 17 | class tuple;
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| 18 |
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| 19 | BOOST_PYTHON_DECL object const& make_instance_reduce_function();
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| 20 |
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| 21 | struct pickle_suite;
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| 22 |
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| 23 | namespace error_messages {
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| 24 |
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| 25 | template <class T>
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| 26 | struct missing_pickle_suite_function_or_incorrect_signature {};
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| 27 |
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| 28 | inline void must_be_derived_from_pickle_suite(pickle_suite const&) {}
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| 29 | }
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| 30 |
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| 31 | namespace detail { struct pickle_suite_registration; }
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| 32 |
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| 33 | struct pickle_suite
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| 34 | {
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| 35 | private:
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| 36 | struct inaccessible {};
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| 37 | friend struct detail::pickle_suite_registration;
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| 38 | public:
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| 39 | static inaccessible* getinitargs() { return 0; }
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| 40 | static inaccessible* getstate() { return 0; }
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| 41 | static inaccessible* setstate() { return 0; }
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| 42 | static bool getstate_manages_dict() { return false; }
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| 43 | };
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| 44 |
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| 45 | namespace detail {
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| 46 |
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| 47 | struct pickle_suite_registration
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| 48 | {
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| 49 | typedef pickle_suite::inaccessible inaccessible;
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| 50 |
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| 51 | template <class Class_, class Tgetinitargs>
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| 52 | static
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| 53 | void
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| 54 | register_(
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| 55 | Class_& cl,
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| 56 | tuple (*getinitargs_fn)(Tgetinitargs),
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| 57 | inaccessible* (*getstate_fn)(),
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| 58 | inaccessible* (*setstate_fn)(),
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| 59 | bool)
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| 60 | {
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| 61 | cl.enable_pickling_(false);
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| 62 | cl.def("__getinitargs__", getinitargs_fn);
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| 63 | }
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| 64 |
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| 65 | template <class Class_,
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| 66 | class Rgetstate, class Tgetstate,
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| 67 | class Tsetstate, class Ttuple>
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| 68 | static
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| 69 | void
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| 70 | register_(
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| 71 | Class_& cl,
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| 72 | inaccessible* (*getinitargs_fn)(),
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| 73 | Rgetstate (*getstate_fn)(Tgetstate),
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| 74 | void (*setstate_fn)(Tsetstate, Ttuple),
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| 75 | bool getstate_manages_dict)
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| 76 | {
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| 77 | cl.enable_pickling_(getstate_manages_dict);
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| 78 | cl.def("__getstate__", getstate_fn);
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| 79 | cl.def("__setstate__", setstate_fn);
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| 80 | }
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| 81 |
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| 82 | template <class Class_,
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| 83 | class Tgetinitargs,
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| 84 | class Rgetstate, class Tgetstate,
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| 85 | class Tsetstate, class Ttuple>
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| 86 | static
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| 87 | void
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| 88 | register_(
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| 89 | Class_& cl,
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| 90 | tuple (*getinitargs_fn)(Tgetinitargs),
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| 91 | Rgetstate (*getstate_fn)(Tgetstate),
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| 92 | void (*setstate_fn)(Tsetstate, Ttuple),
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| 93 | bool getstate_manages_dict)
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| 94 | {
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| 95 | cl.enable_pickling_(getstate_manages_dict);
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| 96 | cl.def("__getinitargs__", getinitargs_fn);
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| 97 | cl.def("__getstate__", getstate_fn);
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| 98 | cl.def("__setstate__", setstate_fn);
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| 99 | }
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| 100 |
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| 101 | template <class Class_>
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| 102 | static
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| 103 | void
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| 104 | register_(
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| 105 | Class_&,
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| 106 | ...)
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| 107 | {
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| 108 | typedef typename
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| 109 | error_messages::missing_pickle_suite_function_or_incorrect_signature<
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| 110 | Class_>::error_type error_type;
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| 111 | }
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| 112 | };
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| 113 |
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| 114 | template <typename PickleSuiteType>
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| 115 | struct pickle_suite_finalize
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| 116 | : PickleSuiteType,
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| 117 | pickle_suite_registration
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| 118 | {};
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| 119 |
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| 120 | } // namespace detail
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| 121 |
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| 122 | }} // namespace boost::python
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| 123 |
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| 124 | #endif // BOOST_PYTHON_OBJECT_PICKLE_SUPPORT_RWGK20020603_HPP
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