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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/Function.h>
28#include <AK/JsonArray.h>
29#include <AK/JsonObject.h>
30#include <AK/JsonParser.h>
31#include <AK/JsonValue.h>
32#include <AK/StringBuilder.h>
33
34namespace AK {
35
36JsonValue::JsonValue(Type type)
37 : m_type(type)
38{
39}
40
41JsonValue::JsonValue(const JsonValue& other)
42{
43 copy_from(other);
44}
45
46JsonValue& JsonValue::operator=(const JsonValue& other)
47{
48 if (this != &other) {
49 clear();
50 copy_from(other);
51 }
52 return *this;
53}
54
55void JsonValue::copy_from(const JsonValue& other)
56{
57 m_type = other.m_type;
58 switch (m_type) {
59 case Type::String:
60 ASSERT(!m_value.as_string);
61 m_value.as_string = other.m_value.as_string;
62 m_value.as_string->ref();
63 break;
64 case Type::Object:
65 m_value.as_object = new JsonObject(*other.m_value.as_object);
66 break;
67 case Type::Array:
68 m_value.as_array = new JsonArray(*other.m_value.as_array);
69 break;
70 default:
71 m_value.as_string = other.m_value.as_string;
72 break;
73 }
74}
75
76JsonValue::JsonValue(JsonValue&& other)
77{
78 m_type = exchange(other.m_type, Type::Undefined);
79 m_value.as_string = exchange(other.m_value.as_string, nullptr);
80}
81
82JsonValue& JsonValue::operator=(JsonValue&& other)
83{
84 if (this != &other) {
85 clear();
86 m_type = exchange(other.m_type, Type::Undefined);
87 m_value.as_string = exchange(other.m_value.as_string, nullptr);
88 }
89 return *this;
90}
91
92JsonValue::JsonValue(i32 value)
93 : m_type(Type::Int32)
94{
95 m_value.as_i32 = value;
96}
97
98JsonValue::JsonValue(u32 value)
99 : m_type(Type::UnsignedInt32)
100{
101 m_value.as_u32 = value;
102}
103
104JsonValue::JsonValue(i64 value)
105 : m_type(Type::Int64)
106{
107 m_value.as_i64 = value;
108}
109
110JsonValue::JsonValue(u64 value)
111 : m_type(Type::UnsignedInt64)
112{
113 m_value.as_u64 = value;
114}
115
116JsonValue::JsonValue(const char* cstring)
117 : JsonValue(String(cstring))
118{
119}
120
121#if !defined(BOOTSTRAPPER) && !defined(KERNEL)
122JsonValue::JsonValue(double value)
123 : m_type(Type::Double)
124{
125 m_value.as_double = value;
126}
127#endif
128
129JsonValue::JsonValue(bool value)
130 : m_type(Type::Bool)
131{
132 m_value.as_bool = value;
133}
134
135JsonValue::JsonValue(const String& value)
136{
137 if (value.is_null()) {
138 m_type = Type::Null;
139 } else {
140 m_type = Type::String;
141 m_value.as_string = const_cast<StringImpl*>(value.impl());
142 m_value.as_string->ref();
143 }
144}
145
146JsonValue::JsonValue(const IPv4Address& value)
147 : JsonValue(value.to_string())
148{
149}
150
151JsonValue::JsonValue(const JsonObject& value)
152 : m_type(Type::Object)
153{
154 m_value.as_object = new JsonObject(value);
155}
156
157JsonValue::JsonValue(const JsonArray& value)
158 : m_type(Type::Array)
159{
160 m_value.as_array = new JsonArray(value);
161}
162
163JsonValue::JsonValue(JsonObject&& value)
164 : m_type(Type::Object)
165{
166 m_value.as_object = new JsonObject(move(value));
167}
168
169JsonValue::JsonValue(JsonArray&& value)
170 : m_type(Type::Array)
171{
172 m_value.as_array = new JsonArray(move(value));
173}
174
175void JsonValue::clear()
176{
177 switch (m_type) {
178 case Type::String:
179 m_value.as_string->unref();
180 break;
181 case Type::Object:
182 delete m_value.as_object;
183 break;
184 case Type::Array:
185 delete m_value.as_array;
186 break;
187 default:
188 break;
189 }
190 m_type = Type::Undefined;
191 m_value.as_string = nullptr;
192}
193
194JsonValue JsonValue::from_string(const StringView& input)
195{
196 return JsonParser(input).parse();
197}
198
199}