-
Notifications
You must be signed in to change notification settings - Fork 6
Expand file tree
/
Copy pathzscalar_wrapper.hpp
More file actions
189 lines (152 loc) · 5.32 KB
/
zscalar_wrapper.hpp
File metadata and controls
189 lines (152 loc) · 5.32 KB
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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/***************************************************************************
* Copyright (c) Johan Mabille, Sylvain Corlay and Wolf Vollprecht *
* Copyright (c) QuantStack *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
****************************************************************************/
#ifndef XTENSOR_ZSCALAR_WRAPPER_HPP
#define XTENSOR_ZSCALAR_WRAPPER_HPP
#include "zarray_impl.hpp"
namespace xt
{
/*******************
* zscalar_wrapper *
*******************/
template <class CTE>
class zscalar_wrapper : public ztyped_array<typename std::decay_t<CTE>::value_type>
{
public:
using self_type = zscalar_wrapper;
using value_type = typename std::decay_t<CTE>::value_type;
using base_type = ztyped_array<value_type>;
using shape_type = typename base_type::shape_type;
using slice_vector = typename base_type::slice_vector;
template <class E>
zscalar_wrapper(E&& e);
zscalar_wrapper(zscalar_wrapper&&) = default;
virtual ~zscalar_wrapper() = default;
bool is_array() const override;
bool is_chunked() const override;
xarray<value_type>& get_array() override;
const xarray<value_type>& get_array() const override;
xarray<value_type> get_chunk(const slice_vector& slices) const override;
self_type* clone() const override;
std::ostream& print(std::ostream& out) const override;
zarray_impl* strided_view(slice_vector& slices) override;
const nlohmann::json& get_metadata() const override;
void set_metadata(const nlohmann::json& metadata) override;
std::size_t dimension() const override;
const shape_type& shape() const override;
void reshape(const shape_type&) override;
void reshape(shape_type&&) override;
void resize(const shape_type&) override;
void resize(shape_type&&) override;
bool broadcast_shape(shape_type& shape, bool reuse_cache = 0) const override;
private:
zscalar_wrapper(const zscalar_wrapper&) = default;
CTE m_expression;
xarray<value_type> m_array;
nlohmann::json m_metadata;
};
/**********************************
* zscalar_wrapper implementation *
**********************************/
template <class CTE>
template <class E>
inline zscalar_wrapper<CTE>::zscalar_wrapper(E&& e)
: base_type()
, m_expression(std::forward<E>(e))
, m_array(m_expression())
{
detail::set_data_type<value_type>(m_metadata);
}
template <class CTE>
bool zscalar_wrapper<CTE>::is_array() const
{
return false;
}
template <class CTE>
bool zscalar_wrapper<CTE>::is_chunked() const
{
return false;
}
template <class CTE>
auto zscalar_wrapper<CTE>::get_array() -> xarray<value_type>&
{
return m_array;
}
template <class CTE>
auto zscalar_wrapper<CTE>::get_array() const -> const xarray<value_type>&
{
return m_array;
}
template <class CTE>
auto zscalar_wrapper<CTE>::get_chunk(const slice_vector&) const -> xarray<value_type>
{
return m_array;
}
template <class CTE>
auto zscalar_wrapper<CTE>::clone() const -> self_type*
{
return new self_type(*this);
}
template <class CTE>
std::ostream& zscalar_wrapper<CTE>::print(std::ostream& out) const
{
return out << m_expression;
}
template <class CTE>
zarray_impl* zscalar_wrapper<CTE>::strided_view(slice_vector& slices)
{
auto e = xt::strided_view(m_array, slices);
return detail::build_zarray(std::move(e));
}
template <class CTE>
auto zscalar_wrapper<CTE>::get_metadata() const -> const nlohmann::json&
{
return m_metadata;
}
template <class CTE>
void zscalar_wrapper<CTE>::set_metadata(const nlohmann::json& metadata)
{
m_metadata = metadata;
}
template <class CTE>
std::size_t zscalar_wrapper<CTE>::dimension() const
{
return m_array.dimension();
}
template <class CTE>
auto zscalar_wrapper<CTE>::shape() const -> const shape_type&
{
return m_array.shape();
}
template <class CTE>
void zscalar_wrapper<CTE>::reshape(const shape_type&)
{
throw std::runtime_error("Cannot reshape scalar wrapper");
}
template <class CTE>
void zscalar_wrapper<CTE>::reshape(shape_type&&)
{
throw std::runtime_error("Cannot reshape scalar wrapper");
}
template <class CTE>
void zscalar_wrapper<CTE>::resize(const shape_type&)
{
throw std::runtime_error("Cannot resize scalar wrapper");
}
template <class CTE>
void zscalar_wrapper<CTE>::resize(shape_type&&)
{
throw std::runtime_error("Cannot resize scalar wrapper");
}
template <class CTE>
bool zscalar_wrapper<CTE>::broadcast_shape(shape_type& shape, bool reuse_cache) const
{
return m_array.broadcast_shape(shape, reuse_cache);
}
}
#endif