tp7 step 2 solution

tp7/src/main/kotlin/fmt/kotlin/fundamentals/CellarDsl.kt

@@ -0,0 +1,46 @@
+package fmt.kotlin.fundamentals
+
+fun cellar(init: CellarDsl.() -> Unit): Cellar {
+    val dsl = CellarDsl()
+    dsl.init()
+    val cellar = Cellar(
+        barrels = dsl.barrels,
+        bottles = dsl.bottles
+    )
+    return cellar
+}
+
+class CellarDsl {
+    val barrels = mutableListOf<Barrel>()
+    val bottles = mutableListOf<Bottle>()
+
+    fun barrel(init: BarrelDsl.() -> Unit): Barrel {
+        val dsl = BarrelDsl()
+        dsl.init()
+        val barrel = Barrel(
+            capacity = dsl.capacity
+        )
+        barrels.add(barrel)
+        return barrel
+    }
+
+    fun bottle(init: BottleDsl.() -> Unit): Bottle {
+        val dsl = BottleDsl()
+        dsl.init()
+        val bottle = Bottle(
+            name = dsl.name,
+            year = dsl.year
+        )
+        bottles.add(bottle)
+        return bottle
+    }
+}
+
+class BarrelDsl {
+    var capacity: Int = 0
+}
+
+class BottleDsl {
+    var name: String = ""
+    var year: Int = 0
+}