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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
#ifndef RFL_AVRO_WRITER_HPP_
#define RFL_AVRO_WRITER_HPP_
#include <avro.h>
#include <bit>
#include <cstdint>
#include <exception>
#include <map>
#include <sstream>
#include <stdexcept>
#include <string>
#include <string_view>
#include <type_traits>
#include <variant>
#include <vector>
#include "../Box.hpp"
#include "../Bytestring.hpp"
#include "../Ref.hpp"
#include "../Result.hpp"
#include "../always_false.hpp"
#include "../internal/is_literal.hpp"
namespace rfl::avro {
class Writer {
public:
struct AVROOutputArray {
avro_value_t val_;
};
struct AVROOutputMap {
avro_value_t val_;
};
struct AVROOutputObject {
avro_value_t val_;
};
struct AVROOutputUnion {
avro_value_t val_;
};
struct AVROOutputVar {
avro_value_t val_;
};
using OutputArrayType = AVROOutputArray;
using OutputMapType = AVROOutputMap;
using OutputObjectType = AVROOutputObject;
using OutputUnionType = AVROOutputUnion;
using OutputVarType = AVROOutputVar;
Writer(avro_value_t* _root);
~Writer();
OutputArrayType array_as_root(const size_t _size) const noexcept;
OutputMapType map_as_root(const size_t _size) const noexcept;
OutputObjectType object_as_root(const size_t _size) const noexcept;
OutputVarType null_as_root() const noexcept;
OutputUnionType union_as_root() const noexcept;
template <class T>
OutputVarType value_as_root(const T& _var) const noexcept {
set_value(_var, root_);
return OutputVarType{*root_};
}
OutputArrayType add_array_to_array(const size_t _size,
OutputArrayType* _parent) const noexcept;
OutputArrayType add_array_to_map(const std::string_view& _name,
const size_t _size,
OutputMapType* _parent) const noexcept;
OutputArrayType add_array_to_object(const std::string_view& _name,
const size_t _size,
OutputObjectType* _parent) const noexcept;
OutputArrayType add_array_to_union(const size_t _index, const size_t _size,
OutputUnionType* _parent) const noexcept;
OutputMapType add_map_to_array(const size_t _size,
OutputArrayType* _parent) const noexcept;
OutputMapType add_map_to_map(const std::string_view& _name,
const size_t _size,
OutputMapType* _parent) const noexcept;
OutputMapType add_map_to_object(const std::string_view& _name,
const size_t _size,
OutputObjectType* _parent) const noexcept;
OutputMapType add_map_to_union(const size_t _index, const size_t _size,
OutputUnionType* _parent) const noexcept;
OutputObjectType add_object_to_array(const size_t _size,
OutputArrayType* _parent) const noexcept;
OutputObjectType add_object_to_map(const std::string_view& _name,
const size_t _size,
OutputMapType* _parent) const noexcept;
OutputObjectType add_object_to_object(
const std::string_view& _name, const size_t _size,
OutputObjectType* _parent) const noexcept;
OutputObjectType add_object_to_union(const size_t _index, const size_t _size,
OutputUnionType* _parent) const noexcept;
OutputUnionType add_union_to_array(OutputArrayType* _parent) const noexcept;
OutputUnionType add_union_to_map(const std::string_view& _name,
OutputMapType* _parent) const noexcept;
OutputUnionType add_union_to_object(const std::string_view& _name,
OutputObjectType* _parent) const noexcept;
OutputUnionType add_union_to_union(const size_t _index,
OutputUnionType* _parent) const noexcept;
OutputVarType add_null_to_array(OutputArrayType* _parent) const noexcept;
OutputVarType add_null_to_map(const std::string_view& _name,
OutputMapType* _parent) const noexcept;
OutputVarType add_null_to_object(const std::string_view& _name,
OutputObjectType* _parent) const noexcept;
OutputVarType add_null_to_union(const size_t _index,
OutputUnionType* _parent) const noexcept;
template <class T>
OutputVarType add_value_to_array(const T& _var,
OutputArrayType* _parent) const noexcept {
avro_value_t new_value;
avro_value_append(&_parent->val_, &new_value, nullptr);
set_value(_var, &new_value);
return OutputVarType{new_value};
}
template <class T>
OutputVarType add_value_to_map(const std::string_view& _name, const T& _var,
OutputMapType* _parent) const noexcept {
avro_value_t new_value;
avro_value_add(&_parent->val_, _name.data(), &new_value, nullptr, nullptr);
set_value(_var, &new_value);
return OutputVarType{new_value};
}
template <class T>
OutputVarType add_value_to_object(const std::string_view& _name,
const T& _var,
OutputObjectType* _parent) const noexcept {
avro_value_t new_value;
avro_value_get_by_name(&_parent->val_, _name.data(), &new_value, nullptr);
set_value(_var, &new_value);
return OutputVarType{new_value};
}
template <class T>
OutputVarType add_value_to_union(const size_t _index, const T& _var,
OutputUnionType* _parent) const noexcept {
avro_value_t new_value;
avro_value_set_branch(&_parent->val_, static_cast<int>(_index), &new_value);
set_value(_var, &new_value);
return OutputVarType{new_value};
}
void end_array(OutputArrayType* _arr) const noexcept {}
void end_map(OutputMapType* _obj) const noexcept {}
void end_object(OutputObjectType* _obj) const noexcept {}
private:
template <class T>
void set_value(const T& _var, avro_value_t* _val) const noexcept {
if constexpr (std::is_same<std::remove_cvref_t<T>, std::string>()) {
avro_value_set_string_len(_val, _var.c_str(), _var.size() + 1);
} else if constexpr (std::is_same<std::remove_cvref_t<T>,
rfl::Bytestring>()) {
auto var = _var;
avro_value_set_bytes(_val, var.data(), var.size() + 1);
} else if constexpr (std::is_same<std::remove_cvref_t<T>, bool>()) {
avro_value_set_boolean(_val, _var);
} else if constexpr (std::is_floating_point<std::remove_cvref_t<T>>()) {
avro_value_set_double(_val, static_cast<double>(_var));
} else if constexpr (std::is_integral<std::remove_cvref_t<T>>()) {
avro_value_set_long(_val, static_cast<std::int64_t>(_var));
} else if constexpr (internal::is_literal_v<T>) {
avro_value_set_enum(_val, static_cast<int>(_var.value()));
} else {
static_assert(rfl::always_false_v<T>, "Unsupported type.");
}
}
private:
avro_value_t* root_;
};
} // namespace rfl::avro
#endif
|
