Add multibindings module

Author: JLLeitschuh

kotlin-guiced.gradle.kts

@@ -21,7 +21,7 @@ apply {
 val PUBLISHED_CONFIGURATION_NAME = "published"
 
 allprojects {
-    version = "0.0.2"
+    version = "0.0.3-SNAPSHOT"
     group = "org.jlleitschuh.guice"
 }
 

multibindings/multibindings.gradle.kts

@@ -0,0 +1,4 @@
+dependencies {
+    compile(project(":kotlin-guiced-core"))
+    compile(group = "com.google.inject.extensions", name = "guice-multibindings", version = "4.1.0")
+}

multibindings/src/main/kotlin/org/jlleitschuh/guice/multibindings/Multibinder.kt

@@ -0,0 +1,14 @@
+package org.jlleitschuh.guice.multibindings
+
+import com.google.inject.Binder
+import com.google.inject.multibindings.Multibinder
+import org.jlleitschuh.guice.key
+import org.jlleitschuh.guice.typeLiteral
+import kotlin.reflect.KClass
+
+object KotlinMultibinder {
+    inline fun <reified T> newSetBinder(binder: Binder) = Multibinder.newSetBinder(binder, key<T>())!!
+
+    inline fun <reified T> newSetBinder(binder: Binder, annotationType: KClass<out Annotation>) =
+        Multibinder.newSetBinder(binder, typeLiteral<T>(), annotationType.java)!!
+}

multibindings/src/test/kotlin/org/jlleitschuh/guice/multibindings/MultibinderTest.kt

@@ -0,0 +1,27 @@
+package org.jlleitschuh.guice.multibindings
+
+import com.google.inject.AbstractModule
+import io.kotlintest.specs.StringSpec
+
+class MultibinderTest : StringSpec() {
+    @Target(AnnotationTarget.CLASS)
+    @Retention(AnnotationRetention.RUNTIME)
+    annotation class TestAnnotation
+    interface TestInterface
+    init {
+        "should be able to bind an interface" {
+            object : AbstractModule() {
+                override fun configure() {
+                    KotlinMultibinder.newSetBinder<TestInterface>(binder())
+                }
+            }
+        }
+        "should be able to bind an interface and an annotation" {
+            object : AbstractModule() {
+                override fun configure() {
+                    KotlinMultibinder.newSetBinder<TestInterface>(binder(), TestAnnotation::class)
+                }
+            }
+        }
+    }
+}

settings.gradle

@@ -1,4 +1,5 @@
 include ":core"
+include ":multibindings"
 
 rootProject.name = 'kotlin-guiced'
 rootProject.buildFileName = "build.gradle.kts"