Nektar++
VarCoeffEntry.hpp
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1///////////////////////////////////////////////////////////////////////////////
2//
3// File: VarCoeffEntry.hpp
4//
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6//
7// The MIT License
8//
9// Copyright (c) 2006 Scientific Computing and Imaging Institute,
10// University of Utah (USA) and Department of Aeronautics, Imperial
11// College London (UK).
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30//
31// Description: Python wrapper for VarCoeffEntry.
32//
33///////////////////////////////////////////////////////////////////////////////
34
35#ifndef NEKTAR_LIBUTILITIES_PYTHON_BASICUITLS_VARCOEFFENTRY_HPP
36#define NEKTAR_LIBUTILITIES_PYTHON_BASICUITLS_VARCOEFFENTRY_HPP
37
38#include <type_traits>
39
42
45
46using namespace Nektar;
47using namespace Nektar::LibUtilities;
48using namespace Nektar::StdRegions;
49
50namespace pybind11::detail
51{
52
53template <> struct type_caster<VarCoeffEntry>
54{
55public:
56 PYBIND11_TYPE_CASTER(VarCoeffEntry, const_name("VarCoeffEntry"));
57
58 bool load(handle src, bool)
59 {
60 if (!array_t<NekDouble>::check_(src))
61 {
62 return false;
63 }
64
65 auto arr =
66 array_t<NekDouble, array::c_style | array::forcecast>::ensure(src);
67 if (!arr)
68 {
69 return false;
70 }
71
72 if (arr.ndim() != 1)
73 {
74 return false;
75 }
76
77 Array<OneD, NekDouble> nekArray = py::cast<Array<OneD, NekDouble>>(src);
78 value = VarCoeffEntry(nekArray);
79
80 return true;
81 }
82
83 static handle cast(VarCoeffEntry const &src, return_value_policy, handle)
84 {
85 // Create a Python capsule to hold a pointer that contains a lightweight
86 // copy of src. That way we guarantee Python will still have access to
87 // the memory allocated inside arr even if arr is deallocated in C++.
88 py::capsule c(new VarCoeffEntry(src), [](void *ptr) {
89 VarCoeffEntry *tmp = (VarCoeffEntry *)ptr;
90 delete tmp;
91 });
92
93 array_t<NekDouble> array({src.GetValue().size()}, {},
94 src.GetValue().data(), c);
95
96 return array.release();
97 }
98};
99
100} // namespace pybind11::detail
101
102#endif
Representation of a variable coefficient.
Definition: StdRegions.hpp:265
const Array< OneD, const NekDouble > & GetValue() const
Returns a const reference to the coefficients.
Definition: StdRegions.hpp:311
bool load(handle src, bool)
static handle cast(VarCoeffEntry const &src, return_value_policy, handle)
PYBIND11_TYPE_CASTER(VarCoeffEntry, const_name("VarCoeffEntry"))