Smuggler


Source link: https://github.com/nsk-mironov/smuggler

Smuggler

Makes your data classes Parcelable. Just add AutoParcelable to the class declaration. That's all. No methods need to be implemented.

data class User(
val uuid: String,
val firstName: String,
val lastName: String ) : AutoParcelable  data class Message(
val uuid: String,
val text: String,
val sender: User,
val timestamp: Long,
val seen: Boolean ) : AutoParcelable  data class Chat(
val title: String,
val messages: List<Message>,
val participants: List<User> ) : AutoParcelable

Kotlin objects are supported as well:

interface Command : AutoParcelable  object LoginCommand : Command object LogoutCommand : Command object MenuCommand : Command  data class ProductCommand(val id: String) : Command data class CategoryCommand(val id: String) : Command

Project Setup

buildscript {

repositories {

  mavenCentral()
  jcenter()

}

  dependencies {

  classpath "com.android.tools.build:gradle:2.2.0"
  classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.0.0"
  classpath "io.mironov.smuggler:smuggler-plugin:0.12.13"

}
 
}
  repositories {

mavenCentral()
jcenter() 
}
  apply plugin: "com.android.application" apply plugin: "io.mironov.smuggler"

Some important notes:

  • Smuggler plugin must be applied after android plugin.
  • In case you have a mutli-module project and want to use AutoParceable, you have to add smuggler-plugin to each module.

Supported types

  • Primitive types: boolean, byte, char, double, float, int, long, short
  • Boxed types: Boolean, Byte, Char, Double, Float, Int, Long, Short
  • Other types: String, Bundle, SparseBooleanArray, Date, SparseArray
  • All Parcelable subclasses
  • All Enum subclasses
  • All Serializable subclasses
  • Arrays of any supported type, including primitive arrays and multidimensional arrays like: Array<Array<Array<User>>
  • Sets, Lists and Maps of any supported type, including primitive types and complex types like: Map<List<Message>, List<Array<Set<User>>>

Custom types

  • Serialization and deserialization of custom types are supported via TypeAdapter's:

    object BigIntegerTypeAdapter : TypeAdapter<BigInteger> {
    
    override fun fromParcel(parcel: Parcel): BigInteger {
    
      return BigInteger(parcel.createByteArray())
    
    }
    
     override fun toParcel(value: BigInteger, parcel: Parcel, flags: Int) {
    
      parcel.writeByteArray(value.toByteArray())
    
    }
     
    }
    
  • Project-level TypeAdapter can be registered using @GlobalAdapter annotation:

    @GlobalAdapter object BigIntegerTypeAdapter : TypeAdapter<BigInteger> {
    
    ... 
    }
    
  • Class-level TypeAdapter can be registered using @LocalAdapter annotation:

    @LocalAdapter(BigIntegerTypeAdapter::class, CalendarTypeAdapter::class) data class Local(
    val integer: BigInteger,
    val calendar: Calendar ) : AutoParcelable
  • Defining TypeAdapter for a particular type automatically allows to use this type with Lists, Maps, Sets and Arrays:

    data class BigIntegerExample(
    val single: BigInteger,
    val array: Array<BigInteger>,
    val multidimensional: Array<Array<BigInteger>>,
    val list: List<BigInteger>,
    val set: Set<BigInteger>,
    val map: Map<String, BigInteger>,
    val complex: Map<Set<BigInteger>, Array<List<BigInteger>>> ) : AutoParcelable
  • Custom TypeAdapter can be defined both as class or object

  • TypeAdapter defined as class must have a public no-args constructor

How does it work?

Smuggler doesn't use reflection so you don't have to worry about its performance. It isn't an annotation proccessor so you don't have to deal with kapt bugs. Instead, Smuggler built on top of transform api and works by proccessing your compiled bytecode and patching classes that implement AutoParcelable interface.

Known limitations

  • Only data classes and kotlin objects are supported
  • Data classes with type parameters aren't supported at the moment
  • Lists, Maps and Arrays with bounded type parameters aren't supported at the moment
  • The library doesn't work nicely with JVM tests at the moment #12

What does "Smuggler" mean?

A smuggler was an individual who dealt with the secret exchanged shipment of goods to block restrictions or tax fees. The items shipped were often considered contraband, and highly illegal. Notable smugglers included Han Solo, Chewbacca, and Lando Calrissian. © http://starwars.wikia.com

License

Copyright 2016 Vladimir Mironov  Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License. You may obtain a copy of the License at
  http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. 

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