wvlet.airframe.DesignImpl.scala Maven / Gradle / Ivy

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package wvlet.airframe

import wvlet.airframe.surface.Surface
import wvlet.log.LogSupport

/**
  * Immutable airframe design.
  *
  * Design instance does not hold any duplicate bindings for the same Surface.
  */
private[airframe] trait DesignImpl extends LogSupport:
  self: Design =>
  inline def bind[A]: Binder[A] =
    registerTraitFactory[A]
    new Binder(self, Surface.of[A], SourceCode()).asInstanceOf[Binder[A]]

  inline def remove[A]: Design =
    val target = Surface.of[A]
    new Design(self.designOptions, self.binding.filterNot(_.from == target), self.hooks)

  inline def bindInstance[A](obj: A): DesignWithContext[A] =
    bind[A].toInstance(obj)
  inline def bindSingleton[A]: DesignWithContext[A] =
    bind[A].toSingleton
  inline def bindImpl[A, B <: A]: DesignWithContext[B] =
    bind[A].to[B]
  inline def bindProvider[D1, A](f: D1 => A): DesignWithContext[A] =
    bind[A].toProvider[D1](f)
  inline def bindProvider[D1, D2, A](f: (D1, D2) => A): DesignWithContext[A] =
    bind[A].toProvider[D1, D2](f)
  inline def bindProvider[D1, D2, D3, A](f: (D1, D2, D3) => A): DesignWithContext[A] =
    bind[A].toProvider[D1, D2, D3](f)
  inline def bindProvider[D1, D2, D3, D4, A](f: (D1, D2, D3, D4) => A): DesignWithContext[A] =
    bind[A].toProvider[D1, D2, D3, D4](f)
  inline def bindProvider[D1, D2, D3, D4, D5, A](f: (D1, D2, D3, D4, D5) => A): DesignWithContext[A] =
    bind[A].toProvider[D1, D2, D3, D4, D5](f)

  /**
    * A helper method of creating a new session and an instance of A. This method is useful when you only need to use A
    * as an entry point of your program. After executing the body, the sesion will be closed.
    *
    * @param body
    * @tparam A
    * @return
    */
  inline def build[A](body: A => Any): Any =
    self.withSession { session =>
      val a = session.build[A]
      body(a)
    }

  /**
    * Execute a given code block by building A using this design, and return B
    */
  inline def run[A, B](body: A => B): B = {
    self.withSession { session =>
      val a = session.build[A]
      body(a)
    }
  }.asInstanceOf[B]