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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2022 INRIA | ||
| 3 | // | ||
| 4 | |||
| 5 | #ifndef COAL_PYTHON_PICKLE_H | ||
| 6 | #define COAL_PYTHON_PICKLE_H | ||
| 7 | |||
| 8 | #include <boost/python.hpp> | ||
| 9 | #include <eigenpy/eigenpy.hpp> | ||
| 10 | |||
| 11 | #include <boost/archive/text_oarchive.hpp> | ||
| 12 | #include <boost/archive/text_iarchive.hpp> | ||
| 13 | #include <sstream> | ||
| 14 | |||
| 15 | using namespace boost::python; | ||
| 16 | using namespace coal; | ||
| 17 | // | ||
| 18 | template <typename T> | ||
| 19 | struct PickleObject : boost::python::pickle_suite { | ||
| 20 | 16 | static boost::python::tuple getinitargs(const T&) { | |
| 21 | 16 | return boost::python::make_tuple(); | |
| 22 | } | ||
| 23 | |||
| 24 | 16 | static boost::python::tuple getstate(const T& obj) { | |
| 25 |
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16 | std::stringstream ss; |
| 26 |
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16 | boost::archive::text_oarchive oa(ss); |
| 27 |
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16 | oa & obj; |
| 28 | |||
| 29 |
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32 | return boost::python::make_tuple(boost::python::str(ss.str())); |
| 30 | 16 | } | |
| 31 | |||
| 32 | 16 | static void setstate(T& obj, boost::python::tuple tup) { | |
| 33 |
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16 | if (boost::python::len(tup) == 0 || boost::python::len(tup) > 1) { |
| 34 | ✗ | throw eigenpy::Exception( | |
| 35 | "Pickle was not able to reconstruct the object from the loaded " | ||
| 36 | "data.\n" | ||
| 37 | "The pickle data structure contains too many elements."); | ||
| 38 | } | ||
| 39 | |||
| 40 |
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16 | boost::python::object py_obj = tup[0]; |
| 41 |
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16 | boost::python::extract<std::string> obj_as_string(py_obj.ptr()); |
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16 | if (obj_as_string.check()) { |
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16 | const std::string str = obj_as_string; |
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16 | std::istringstream is(str); |
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16 | boost::archive::text_iarchive ia(is, boost::archive::no_codecvt); |
| 46 |
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16 | ia >> obj; |
| 47 | 16 | } else { | |
| 48 | ✗ | throw eigenpy::Exception( | |
| 49 | "Pickle was not able to reconstruct the model from the loaded data.\n" | ||
| 50 | "The entry is not a string."); | ||
| 51 | } | ||
| 52 | 16 | } | |
| 53 | |||
| 54 | 165 | static bool getstate_manages_dict() { return false; } | |
| 55 | }; | ||
| 56 | |||
| 57 | #endif // ifndef COAL_PYTHON_PICKLE_H | ||
| 58 |