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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringBuilder.h>
namespace AK {
class JsonValue {
public:
enum class Type {
Null,
Int32,
UnsignedInt32,
Int64,
UnsignedInt64,
#if !defined(KERNEL)
Double,
#endif
Bool,
String,
Array,
Object,
};
static Optional<JsonValue> from_string(const StringView&);
explicit JsonValue(Type = Type::Null);
~JsonValue() { clear(); }
JsonValue(const JsonValue&);
JsonValue(JsonValue&&);
JsonValue& operator=(const JsonValue&);
JsonValue& operator=(JsonValue&&);
JsonValue(int);
JsonValue(unsigned);
JsonValue(long);
JsonValue(long unsigned);
JsonValue(long long);
JsonValue(long long unsigned);
#if !defined(KERNEL)
JsonValue(double);
#endif
JsonValue(bool);
JsonValue(const char*);
JsonValue(const String&);
JsonValue(const JsonArray&);
JsonValue(const JsonObject&);
JsonValue(JsonArray&&);
JsonValue(JsonObject&&);
// FIXME: Implement these
JsonValue& operator=(JsonArray&&) = delete;
JsonValue& operator=(JsonObject&&) = delete;
template<typename Builder>
typename Builder::OutputType serialized() const;
template<typename Builder>
void serialize(Builder&) const;
String as_string_or(String const& alternative) const
{
if (is_string())
return as_string();
return alternative;
}
String to_string() const
{
if (is_string())
return as_string();
return serialized<StringBuilder>();
}
int to_int(int default_value = 0) const { return to_i32(default_value); }
i32 to_i32(i32 default_value = 0) const { return to_number<i32>(default_value); }
i64 to_i64(i64 default_value = 0) const { return to_number<i64>(default_value); }
unsigned to_uint(unsigned default_value = 0) const { return to_u32(default_value); }
u32 to_u32(u32 default_value = 0) const { return to_number<u32>(default_value); }
u64 to_u64(u64 default_value = 0) const { return to_number<u64>(default_value); }
FlatPtr to_addr(FlatPtr default_value = 0) const
{
#ifdef __LP64__
return to_u64(default_value);
#else
return to_u32(default_value);
#endif
}
bool to_bool(bool default_value = false) const
{
if (!is_bool())
return default_value;
return as_bool();
}
i32 as_i32() const
{
VERIFY(is_i32());
return m_value.as_i32;
}
u32 as_u32() const
{
VERIFY(is_u32());
return m_value.as_u32;
}
i64 as_i64() const
{
VERIFY(is_i64());
return m_value.as_i64;
}
u64 as_u64() const
{
VERIFY(is_u64());
return m_value.as_u64;
}
int as_bool() const
{
VERIFY(is_bool());
return m_value.as_bool;
}
String as_string() const
{
VERIFY(is_string());
return *m_value.as_string;
}
const JsonObject& as_object() const
{
VERIFY(is_object());
return *m_value.as_object;
}
const JsonArray& as_array() const
{
VERIFY(is_array());
return *m_value.as_array;
}
#if !defined(KERNEL)
double as_double() const
{
VERIFY(is_double());
return m_value.as_double;
}
#endif
Type type() const
{
return m_type;
}
bool is_null() const { return m_type == Type::Null; }
bool is_bool() const { return m_type == Type::Bool; }
bool is_string() const { return m_type == Type::String; }
bool is_i32() const { return m_type == Type::Int32; }
bool is_u32() const { return m_type == Type::UnsignedInt32; }
bool is_i64() const { return m_type == Type::Int64; }
bool is_u64() const { return m_type == Type::UnsignedInt64; }
#if !defined(KERNEL)
bool is_double() const
{
return m_type == Type::Double;
}
#endif
bool is_array() const
{
return m_type == Type::Array;
}
bool is_object() const { return m_type == Type::Object; }
bool is_number() const
{
switch (m_type) {
case Type::Int32:
case Type::UnsignedInt32:
case Type::Int64:
case Type::UnsignedInt64:
#if !defined(KERNEL)
case Type::Double:
#endif
return true;
default:
return false;
}
}
template<typename T>
T to_number(T default_value = 0) const
{
#if !defined(KERNEL)
if (is_double())
return (T)as_double();
#endif
if (type() == Type::Int32)
return (T)as_i32();
if (type() == Type::UnsignedInt32)
return (T)as_u32();
if (type() == Type::Int64)
return (T)as_i64();
if (type() == Type::UnsignedInt64)
return (T)as_u64();
return default_value;
}
bool equals(const JsonValue& other) const;
private:
void clear();
void copy_from(const JsonValue&);
Type m_type { Type::Null };
union {
StringImpl* as_string { nullptr };
JsonArray* as_array;
JsonObject* as_object;
#if !defined(KERNEL)
double as_double;
#endif
i32 as_i32;
u32 as_u32;
i64 as_i64;
u64 as_u64;
bool as_bool;
} m_value;
};
template<>
struct Formatter<JsonValue> : Formatter<StringView> {
void format(FormatBuilder& builder, const JsonValue& value)
{
Formatter<StringView>::format(builder, value.to_string());
}
};
}
using AK::JsonValue;
|
