kotlinx.serialization additions

GenerateEnumSerializer

This annotation and KSP processor will generate enum serializers which allow for pre-specified mappings on the enum name. For example,

@GenerateEnumSerializer(mode = Mode.SnakeCase, name = "MyEnumSerializer")
@Serializable(with = MyEnumSerializer::class)
enum class MyEnum {
    HelloWorld,
}

will result in an enum that will naturally serialize to/from "hello_world".

To use, add the annotation and processor to build.gradle.

plugins {
    id 'org.jetbrains.kotlin.jvm' version '1.7.20'
    id 'org.jetbrains.kotlin.plugin.serialization' version '1.7.20'
    id 'com.google.devtools.ksp' version '1.7.20-1.0.6'
}

repositories {
    mavenCentral()
    maven {
        url = uri('https://maven.pkg.github.com/ephemient/kotlinx-serialization-contrib')
        credentials {
            // GitHub username and access token here
        }
    }
}

dependencies {
    implementation 'com.github.ephemient.kotlinx-serialization-contrib:annotations:0.0.2-SNAPSHOT'
    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-core:1.4.2'
    ksp 'com.github.ephemient.kotlinx-serialization-contrib:processor:0.0.2-SNAPSHOT'
}

json-contrib/JSON

This is a kotlinx.serialization format which uses JSON-java instead of kotlinx.serialization.json. Usage is similar to other formats.

val json = JSON.encodeToJSON(serializer, value)
val string = JSON.encodeToString(serializer, value)
val value = JSON.decodeFromJSON(serializer, json)
val value = JSON.decodeFromString(serializer, string)

The format may be customized using the builder interface.

JSON {
    serializersModule = SerializersModule {
        // ...
    }
}

This can be found in the json-contrib artifact.

repositories {
    mavenCentral()
    maven {
        url = uri('https://maven.pkg.github.com/ephemient/kotlinx-serialization-contrib')
        credentials {
            // GitHub username and access token here
        }
    }
}

dependencies {
    implementation 'com.github.ephemient.kotlinx-serialization-contrib:json-java:0.0.2-SNAPSHOT'
}

json-contrib/Serde

This is a kotlinx.serialization format which works on Serde-like JSON.

json-contrib/AnyFormat

This is a kotlinx.serialization format which serializes to/deserializes from (lists/maps of) primitives. It can also serialize from/deserialize to JsonElement and related types.