Add better support for creating Guice Modules

Author: JLLeitschuh

.gitignore

@@ -80,6 +80,7 @@ local.properties
 
 ## File-based project format:
 *.iws
+*.iml
 
 ## Plugin-specific files:
 

core/src/main/kotlin/org/jlleitschuh/guice/BinderScope.kt

@@ -0,0 +1,14 @@
+package org.jlleitschuh.guice
+
+import com.google.inject.Binder
+import kotlin.reflect.KClass
+
+class BinderScope
+internal constructor(private val binder: Binder) : Binder by binder {
+
+    /**
+     * See the EDSL examples at [Binder].
+     */
+    fun <T : Any> bind(klass: KClass<T>) =
+        binder.bind(klass::class.java)
+}

core/src/main/kotlin/org/jlleitschuh/guice/Module.kt

@@ -0,0 +1,7 @@
+package org.jlleitschuh.guice
+
+import com.google.inject.Binder
+import com.google.inject.Module
+
+fun module(configure: BinderScope.() -> Unit) =
+    Module { binder -> BinderScope(binder).configure() }

core/src/test/kotlin/org/jlleitschuh/guice/ModuleTest.kt

@@ -0,0 +1,20 @@
+package org.jlleitschuh.guice
+
+import com.google.inject.AbstractModule
+
+class ModuleTest {
+    interface Interface
+
+    class Implementation : Interface
+
+    val simpleModule = module {
+        bind(key<Interface>()).to(key<Implementation>())
+    }
+
+    val complicated = object : AbstractModule() {
+        override fun configure() {
+            bind(key<Interface>()).to(key<Implementation>())
+        }
+
+    }
+}