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
|
/*************************************************************************
* odil - Copyright (C) Universite de Strasbourg
* Distributed under the terms of the CeCILL-B license, as published by
* the CEA-CNRS-INRIA. Refer to the LICENSE file or to
* http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
* for details.
************************************************************************/
#ifndef _0dcf136c_4136_40c3_a036_2a74ca0c54d1
#define _0dcf136c_4136_40c3_a036_2a74ca0c54d1
#include <algorithm>
#include "pybind11/pybind11.h"
#include "odil/DataSet.h"
#include "odil/Exception.h"
#include "odil/Value.h"
// The following must be in every translation unit.
PYBIND11_MAKE_OPAQUE(odil::Value::Integers);
PYBIND11_MAKE_OPAQUE(odil::Value::Reals);
PYBIND11_MAKE_OPAQUE(odil::Value::Strings);
PYBIND11_MAKE_OPAQUE(odil::Value::DataSets);
PYBIND11_MAKE_OPAQUE(odil::Value::Binary);
PYBIND11_MAKE_OPAQUE(odil::Value::Binary::value_type);
template<typename T, typename ... Args>
T convert_sequence(pybind11::sequence & source, Args && ... args)
{
if(pybind11::len(source) == 0)
{
throw odil::Exception("Empty sequence has no type");
}
#define try_convert(Items) \
try \
{ \
Items items(len(source)); \
std::transform( \
source.begin(), source.end(), items.begin(), \
[](pybind11::handle const h) { \
return h.cast<typename Items::value_type>(); \
} \
); \
return T{items, std::forward<Args>(args)...}; \
} \
catch(pybind11::cast_error const &) \
{ \
/* Ignore */ \
}
// WARNING: Strings and DataSets are ambiguous when passing bytearray
// Skip conversion to strings if we get an sequence of bytearrays
auto const is_byte_array = std::all_of(
source.begin(), source.end(), [](pybind11::object && x) {
return PyByteArray_CheckExact(x.ptr()); });
try_convert(odil::Value::Integers);
try_convert(odil::Value::Reals);
if(!is_byte_array)
{
try_convert(odil::Value::Strings);
}
try_convert(odil::Value::DataSets);
try_convert(odil::Value::Binary);
#undef try_convert
try
{
odil::Value::Binary items(len(source));
std::transform(
source.begin(), source.end(), items.begin(),
[](pybind11::handle const h)
{
auto pyobject = h.ptr();
if(PyByteArray_Check(pyobject))
{
auto const begin = PyByteArray_AsString(pyobject);
auto const length = PyObject_Length(pyobject);
return odil::Value::Binary::value_type{begin, begin+length};
}
else
{
throw pybind11::cast_error();
}
}
);
return T{items, std::forward<Args>(args)...};
}
catch(pybind11::cast_error const &)
{
/* ignore */
}
throw odil::Exception("Unknown value type");
}
#endif // _0dcf136c_4136_40c3_a036_2a74ca0c54d1
|
