Packages

trait ModuleDefDSL extends AbstractBindingDefDSL[MakeDSL, MakeDSLUnnamedAfterFrom, SetDSL] with IncludesDSL with TagsDSL

DSL for defining module Bindings.

Example:

class Program[F[_]: TagK: Monad] extends ModuleDef {
  make[TaglessProgram[F]]
}

object TryInterpreters extends ModuleDef {
  make[Validation.Handler[Try]].from(tryValidationHandler)
  make[Interaction.Handler[Try]].from(tryInteractionHandler)
}

// Combine modules into a full program
val TryProgram = new Program[Try] ++ TryInterpreters

Singleton bindings:

  • make[X] = create X using its constructor
  • make[X].from[XImpl] = bind X to its subtype XImpl using XImpl's constructor
  • make[X].from(myX) = bind X to an already existing instance myX
  • make[X].from { y: Y => new X(y) } = bind X to an instance of X constructed by a given Functoid requesting an Y parameter
  • make[X].from { y: Y @Id("special") => new X(y) } = bind X to an instance of X constructed by a given Functoid, requesting a named "special" Y parameter
  • make[X].from { y: Y => new X(y) }.annotateParameter[Y]("special") = bind X to an instance of X constructed by a given Functoid, requesting a named "special" Y parameter
  • make[X].named("special") = bind a named instance of X. It can then be summoned using Id annotation.
  • make[X].using[X]("special") = bind X to refer to another already bound named instance at key [X].named("special")
  • make[X].fromEffect(X.create[F]: F[X]) = create X using a purely-functional effect X.create in F monad
  • make[X].fromResource(X.resource[F]: Lifecycle[F, X]) = create X using a Lifecycle value specifying its creation and destruction lifecycle
  • make[X].from[XImpl].modify(fun(_)) = Create X using XImpl's constructor and apply fun to the result
  • make[X].from[XImpl].modifyBy(_.flatAp { (c: C, d: D) => (x: X) => c.method(x, d) }) = Create X using XImpl's constructor and modify its Functoid using the provided lambda - in this case by summoning additional C & D dependencies and applying C.method to X

Set bindings:

  • many[X].add[X1].add[X2] = bind a Set of X, and add subtypes X1 and X2 created via their constructors to it. Sets can be bound in multiple different modules. All the elements of the same set in different modules will be joined together.
  • many[X].add(x1).add(x2) = add *instances* x1 and x2 to a Set[X]
  • many[X].add { y: Y => new X1(y).add { y: Y => X2(y) } = add instances of X1 and X2 constructed by a given Provider function
  • many[X].named("special").add[X1] = create a named set of X, all the elements of it are added to this named set.
  • many[X].ref[XImpl] = add a reference to an already **existing** binding of XImpl to a set of X's
  • many[X].ref[X]("special") = add a reference to an **existing** named binding of X to a set of X's

Mutators:

  • modify[X](fun(_)) = add a modifier applying fun to the value bound at X (mutator application order is unspecified)
  • modify[X].by(_.flatAp { (c: C, d: D) => (x: X) => c.method(x, d) }) = add a modifier, applying the provided lambda to a Functoid retrieving X - in this case by summoning additional C & D dependencies and applying C.method to X

Tags:

  • make[X].tagged("t1", "t2) = attach tags to X's binding.
  • many[X].add[X1].tagged("x1tag") = Tag a specific element of X. The tags of sets and their elements are separate.
  • many[X].tagged("xsettag") = Tag the binding of empty Set of X with a tag. The tags of sets and their elements are separate.

Includes:

  • include(that: ModuleDef) = add all bindings in that module into this module
Self Type
ModuleDefDSL with ModuleBase
See also

TagK

Id

ModuleDefDSL

Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. ModuleDefDSL
  2. TagsDSL
  3. IncludesDSL
  4. AbstractBindingDefDSL
  5. AnyRef
  6. Any
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Visibility
  1. Public
  2. Protected

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def _initialIncludes: ArrayBuffer[Include]
    Attributes
    protected[this]
    Definition Classes
    IncludesDSL
  5. def _initialState: ArrayBuffer[BindingRef]
    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  6. def _initialTaggedIncludes: ArrayBuffer[IncludeApplyTags]
    Attributes
    protected[this]
    Definition Classes
    IncludesDSL
  7. def _initialTags: Set[BindingTag]
    Attributes
    protected[this]
    Definition Classes
    TagsDSL
  8. final def _make[T](provider: Functoid[T])(implicit arg0: Tag[T], pos: CodePositionMaterializer): MakeDSL[T]
    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  9. def _registered[T <: BindingRef](bindingRef: T): T
    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  10. final def addImplicit[T](implicit arg0: Tag[T], instance: T, pos: CodePositionMaterializer): MakeDSLUnnamedAfterFrom[T]

    Same as make[T].from(implicitly[T]) *

    Same as make[T].from(implicitly[T]) *

    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  11. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  12. final def bindings: Set[Binding]
  13. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  14. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  15. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  16. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  17. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  18. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  19. final def include(that: ModuleBase): Unit

    Add all bindings in that module into this module

    Add all bindings in that module into this module

    WON'T add global tags from TagsDSL#tag to included bindings.

    Attributes
    protected[this]
    Definition Classes
    IncludesDSL
  20. final def includeApplyTags(that: ModuleBase): Unit

    Add all bindings in that module into this module

    Add all bindings in that module into this module

    WILL add global tags from TagsDSL#tag to included bindings.

    Attributes
    protected[this]
    Definition Classes
    IncludesDSL
  21. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  22. final def iterator: Iterator[Binding]
  23. final def keysIterator: Iterator[DIKey]
  24. final macro def make[T]: MakeDSL[T]
    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  25. final def many[T](implicit tag: Tag[Set[T]], pos: CodePositionMaterializer): SetDSL[T]

    Set bindings are useful for implementing event listeners, plugins, hooks, http routes, etc.

    Set bindings are useful for implementing event listeners, plugins, hooks, http routes, etc.

    To define a multibinding use .many and .add methods in ModuleDef DSL:

    import cats.effect._, org.http4s._, org.http4s.dsl.io._, scala.concurrent.ExecutionContext.Implicits.global
    import distage._
    
    object HomeRouteModule extends ModuleDef {
      many[HttpRoutes[IO]].add {
        HttpRoutes.of[IO] { case GET -> Root / "home" => Ok(s"Home page!") }
      }
    }

    Set bindings defined in different modules will be merged together into a single Set. You can summon a created Set by type Set[T]:

    import cats.implicits._, org.http4s.server.blaze._, org.http4s.implicits._
    
    object BlogRouteModule extends ModuleDef {
      many[HttpRoutes[IO]].add {
        HttpRoutes.of[IO] { case GET -> Root / "blog" / post => Ok("Blog post ``$post''!") }
      }
    }
    
    class HttpServer(routes: Set[HttpRoutes[IO]]) {
      val router = routes.foldK
    
      def serve = BlazeBuilder[IO]
        .bindHttp(8080, "localhost")
        .mountService(router, "/")
        .start
    }
    
    val objects = Injector().produce(HomeRouteModule ++ BlogRouteModule)
    val server = objects.get[HttpServer]
    
    val testRouter = server.router.orNotFound
    
    testRouter.run(Request[IO](uri = uri("/home"))).flatMap(_.as[String]).unsafeRunSync
    // Home page!
    
    testRouter.run(Request[IO](uri = uri("/blog/1"))).flatMap(_.as[String]).unsafeRunSync
    // Blog post ``1''!
    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
    See also

    Guice wiki on Multibindings: https://github.com/google/guice/wiki/Multibindings

  26. final def modify[T]: ModifyDSL[T, MakeDSL, MakeDSLUnnamedAfterFrom, SetDSL]

    Modify a value bound at T.

    Modify a value bound at T. Modifiers stack and are all applied before T is added to the object graph; only the final instance is observable.

    import distage.{Injector, ModuleDef}
    
    Injector().produceGet[Int](new ModuleDef {
      make[Int].from(1)
      modify[Int](_ + 1)
      modify[Int](_ + 1)
    }).use(i => println(s"Got `Int` $i"))
    // Got `Int` 3

    You can also modify while summoning additional dependencies:

    modify[Int]("named").by(_.flatAp {
      (adder: Adder, multiplier: Multiplier) =>
        int: Int =>
          multiplier.multiply(adder.add(int, 1), 10)
    })
    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  27. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  28. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  29. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  30. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  31. final def tag(tags: BindingTag*): Unit

    Add tags to all bindings in this module, except for included bindings

    Add tags to all bindings in this module, except for included bindings

    Attributes
    protected[this]
    Definition Classes
    TagsDSL
  32. def toString(): String
    Definition Classes
    AnyRef → Any
  33. final def todo[T](implicit arg0: Tag[T], pos: CodePositionMaterializer): MakeDSLUnnamedAfterFrom[T]

    Create a dummy binding that throws an exception with an error message when it's created.

    Create a dummy binding that throws an exception with an error message when it's created.

    Useful for prototyping.

    Attributes
    protected[this]
    Definition Classes
    AbstractBindingDefDSL
  34. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  35. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  36. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Inherited from TagsDSL

Inherited from IncludesDSL

Inherited from AnyRef

Inherited from Any

Ungrouped