_README.rst

Kotlin + Guiceやってみた

これは Kotlin Advent Calendar の26……じゃなくて13日目です！

経緯

がんばって読んでください。読まなくても良いですけど。

• https://twitter.com/ngsw_taro/status/415864586814758912
• https://twitter.com/backpaper0/status/416153993438437377
• https://twitter.com/ngsw_taro/status/416154253913104384
• https://twitter.com/backpaper0/status/416154471891087360
• https://twitter.com/ngsw_taro/status/416154624454696960
• https://twitter.com/backpaper0/status/416154929791647744

app.kt

package app

import com.google.inject.AbstractModule
import javax.inject.Inject
import com.google.inject.Guice

fun main(args: Array<String>) {
    val module = MyModule()
    val injector = Guice.createInjector(module)
    val a = injector?.getInstance(javaClass<A>())
    println(a)
    println(a?.b)
    println(a?.c?.say())
}

class MyModule : AbstractModule() {
    override fun configure() {
        bind(javaClass<A>())
        bind(javaClass<B>())
        bind(javaClass<C>())?.to(javaClass<D>())
    }
}

class A [Inject] (val b: B, val c: C)
class B
trait C {
    fun name(): String
    fun say() = "Hello, " + name() + "!"
}
class D : C {
    override fun name() = "world"
}