Add MonocleLensesModelsCodeGenerator, and move CirceJsonCodecModelsCo…

…deGenerator to `extra` subpackage

slick-additions-codegen/src/main/scala/slick/additions/codegen/extra/circe/CirceJsonCodecModelsCodeGenerator.scala

@@ -0,0 +1,23 @@
+package slick.additions.codegen.extra.circe
+
+import scala.meta.{Init, Mod, Name, Type}
+
+import slick.additions.codegen.{
+  ModelsCodeGenerator,
+  TableConfig,
+  scalametaDefnClassExtensionMethods
+}
+
+/** Annotates model classes with Circe's `@JsonCodec`.
+  *
+  * Generated code requires `circe-generic`
+  */
+trait CirceJsonCodecModelsCodeGenerator extends ModelsCodeGenerator {
+  override protected def modelClass(tableConfig: TableConfig) =
+    super
+      .modelClass(tableConfig)
+      .withMod(Mod.Annot(Init(Type.Name("JsonCodec"), Name.Anonymous(), Nil)))
+
+  override protected def imports(strings: List[String]) =
+    super.imports(strings :+ "io.circe.generic.JsonCodec")
+}

slick-additions-codegen/src/main/scala/slick/additions/codegen/extra/monocle/MonocleLensesModelsCodeGenerator.scala

@@ -0,0 +1,29 @@
+package slick.additions.codegen.extra.monocle
+
+import scala.meta._
+
+import slick.additions.codegen.{
+  ModelsCodeGenerator,
+  TableConfig,
+  scalametaDefnClassExtensionMethods
+}
+
+/** Annotates model classes with Monocle's `@Lenses`.
+  *
+  * Generated code requires `monocle-macro`
+  */
+trait MonocleLensesModelsCodeGenerator extends ModelsCodeGenerator {
+  override protected def modelClass(tableConfig: TableConfig) =
+    super
+      .modelClass(tableConfig)
+      .withMod(Mod.Annot(Init(Type.Name("Lenses"), Name.Anonymous(), Nil)))
+
+  override protected def rowStats(tableConfig: TableConfig) =
+    List(
+      modelClass(tableConfig),
+      q"object ${Term.Name(tableConfig.modelClassName)}"
+    )
+
+  override protected def imports(strings: List[String]) =
+    super.imports(strings :+ "monocle.macros.Lenses")
+}

slick-additions-codegen/src/main/scala/slick/additions/codegen/package.scala

@@ -1,5 +1,6 @@
 package slick.additions
 
+import scala.meta.{Defn, Mod}
 import scala.util.Try
 
 
@@ -21,4 +22,8 @@ package object codegen {
   val AsBoolean = new TryExtractor(_.toBoolean)
   val AsInt = new TryExtractor(_.toInt)
   val AsDouble = new TryExtractor(_.toDouble)
+
+  implicit class scalametaDefnClassExtensionMethods(private val self: Defn.Class) extends AnyVal {
+    def withMod(mod: Mod) = self.copy(mods = mod +: self.mods)
+  }
 }