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
|
/*
* Copyright 2017-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.serialization.json
import kotlinx.serialization.*
import kotlinx.serialization.internal.*
/**
* External [Serializer] object providing [SerializationStrategy] and [DeserializationStrategy] for [JsonElement].
* It can only be used by with [Json] format an its input ([JsonInput] and [JsonOutput]).
* Currently, this hierarchy has no guarantees on descriptor content.
*
* Example usage:
* ```
* val string = Json.stringify(JsonElementSerializer, json { "key" to 1.0 })
* val literal = Json.parse(JsonElementSerializer, string)
* assertEquals(JsonObject(mapOf("key" to JsonLiteral(1.0))), literal)
* ```
*/
@Serializer(forClass = JsonElement::class)
public object JsonElementSerializer : KSerializer<JsonElement> {
override val descriptor: SerialDescriptor = object : SerialClassDescImpl("JsonElementSerializer") {
override val kind: SerialKind get() = UnionKind.SEALED
}
override fun serialize(encoder: Encoder, obj: JsonElement) {
verify(encoder)
when (obj) {
is JsonPrimitive -> JsonPrimitiveSerializer.serialize(encoder, obj)
is JsonObject -> JsonObjectSerializer.serialize(encoder, obj)
is JsonArray -> JsonArraySerializer.serialize(encoder, obj)
}
}
override fun deserialize(decoder: Decoder): JsonElement {
verify(decoder)
val input = decoder as JsonInput
return input.decodeJson()
}
}
/**
* External [Serializer] object providing [SerializationStrategy] and [DeserializationStrategy] for [JsonPrimitive].
* It can only be used by with [Json] format an its input ([JsonInput] and [JsonOutput]).
*/
@Serializer(forClass = JsonPrimitive::class)
public object JsonPrimitiveSerializer : KSerializer<JsonPrimitive> {
override val descriptor: SerialDescriptor get() = JsonPrimitiveDescriptor
override fun serialize(encoder: Encoder, obj: JsonPrimitive) {
verify(encoder)
return if (obj is JsonNull) {
JsonNullSerializer.serialize(encoder, JsonNull)
} else {
JsonLiteralSerializer.serialize(encoder, obj as JsonLiteral)
}
}
override fun deserialize(decoder: Decoder): JsonPrimitive {
verify(decoder)
return if (decoder.decodeNotNullMark()) JsonPrimitive(decoder.decodeString())
else JsonNullSerializer.deserialize(decoder)
}
private object JsonPrimitiveDescriptor : SerialClassDescImpl("JsonPrimitive") {
override val kind: SerialKind
get() = PrimitiveKind.STRING
}
}
/**
* External [Serializer] object providing [SerializationStrategy] and [DeserializationStrategy] for [JsonNull].
* It can only be used by with [Json] format an its input ([JsonInput] and [JsonOutput]).
*/
@Serializer(forClass = JsonNull::class)
public object JsonNullSerializer : KSerializer<JsonNull> {
override val descriptor: SerialDescriptor get() = JsonNullDescriptor
override fun serialize(encoder: Encoder, obj: JsonNull) {
verify(encoder)
encoder.encodeNull()
}
override fun deserialize(decoder: Decoder): JsonNull {
verify(decoder)
decoder.decodeNull()
return JsonNull
}
private object JsonNullDescriptor : SerialClassDescImpl("JsonNull") {
override val kind: SerialKind get() = UnionKind.OBJECT
}
}
/**
* External [Serializer] object providing [SerializationStrategy] and [DeserializationStrategy] for [JsonLiteral].
* It can only be used by with [Json] format an its input ([JsonInput] and [JsonOutput]).
*/
@Serializer(forClass = JsonLiteral::class)
public object JsonLiteralSerializer : KSerializer<JsonLiteral> {
override val descriptor: SerialDescriptor get() = JsonLiteralDescriptor
override fun serialize(encoder: Encoder, obj: JsonLiteral) {
verify(encoder)
if (obj.isString) {
return encoder.encodeString(obj.content)
}
val long = obj.longOrNull
if (long != null) {
return encoder.encodeLong(long)
}
val double = obj.doubleOrNull
if (double != null) {
return encoder.encodeDouble(double)
}
val boolean = obj.booleanOrNull
if (boolean != null) {
return encoder.encodeBoolean(boolean)
}
encoder.encodeString(obj.content)
}
override fun deserialize(decoder: Decoder): JsonLiteral {
verify(decoder)
return JsonLiteral(decoder.decodeString())
}
private object JsonLiteralDescriptor : SerialClassDescImpl("JsonLiteral") {
override val kind: SerialKind
get() = PrimitiveKind.STRING
}
}
/**
* External [Serializer] object providing [SerializationStrategy] and [DeserializationStrategy] for [JsonObject].
* It can only be used by with [Json] format an its input ([JsonInput] and [JsonOutput]).
*/
@Serializer(forClass = JsonObject::class)
public object JsonObjectSerializer : KSerializer<JsonObject> {
override val descriptor: SerialDescriptor =
NamedMapClassDescriptor("JsonObject", StringSerializer.descriptor, JsonElementSerializer.descriptor)
override fun serialize(encoder: Encoder, obj: JsonObject) {
verify(encoder)
LinkedHashMapSerializer(StringSerializer, JsonElementSerializer).serialize(encoder, obj.content)
}
override fun deserialize(decoder: Decoder): JsonObject {
verify(decoder)
return JsonObject(LinkedHashMapSerializer(StringSerializer, JsonElementSerializer).deserialize(decoder))
}
}
/**
* External [Serializer] object providing [SerializationStrategy] and [DeserializationStrategy] for [JsonArray].
* It can only be used by with [Json] format an its input ([JsonInput] and [JsonOutput]).
*/
@Serializer(forClass = JsonArray::class)
public object JsonArraySerializer : KSerializer<JsonArray> {
override val descriptor: SerialDescriptor = NamedListClassDescriptor("JsonArray",
JsonElementSerializer.descriptor)
override fun serialize(encoder: Encoder, obj: JsonArray) {
verify(encoder)
ArrayListSerializer(JsonElementSerializer).serialize(encoder, obj)
}
override fun deserialize(decoder: Decoder): JsonArray {
verify(decoder)
return JsonArray(ArrayListSerializer(JsonElementSerializer).deserialize(decoder))
}
}
private fun verify(encoder: Encoder) {
if (encoder !is JsonOutput) error("Json element serializer can be used only by Json format")
}
private fun verify(decoder: Decoder) {
if (decoder !is JsonInput) error("Json element serializer can be used only by Json format")
}
|
