Scala implicitNotFound类代码示例

//设置package包名称以及导入依赖的类
package com.joprice.flink

import shapeless._
import shapeless.ops.record._
import scala.annotation.implicitNotFound
import shapeless.tag._

@implicitNotFound("Could not find the fields ${L} in ${T}")
trait HasFields[T, L <: HList]

object HasFields{

  implicit def hnilToHasFieldMapper[T]: HasFields[T, HNil] = null

  implicit def stringToHasFieldMapper[T, Head, L <: HList, Tail <: HList](
    implicit
    lgen: LabelledGeneric.Aux[T, L],
    s: Selector[L, Symbol @@ Head],
    tail: HasFields[T, Tail]
  ): HasFields[T, Head :: Tail] = null

  implicit def symbolToHasFieldMapper[T, Head, L <: HList, Tail <: HList](
    implicit
    lgen: LabelledGeneric.Aux[T, L],
    s: Selector[L, Head],
    tail: HasFields[T, Tail]
  ): HasFields[T, Head :: Tail] = null

} 

//设置package包名称以及导入依赖的类
package nl.codestar.scala.ts.interface

import scala.annotation.implicitNotFound
import TypescriptType._



@implicitNotFound(
  "Could not find a Typescript type mapping for type ${T}. Make sure an implicit TSType[${T}] or TSIType[${T}] is in scope and was defined before this point.")
trait TSType[T] { self =>
  def get: TypescriptType
}

@implicitNotFound(
  "Could not find a TSNamedType[${T}] in scope. If you have defined a typescript mapping, we can only use typescript types with a name at this location.")
trait TSNamedType[T] extends TSType[T] { self =>
  def get: TypescriptNamedType
}

object TSType {
  def apply[T](tt: TypescriptType): TSType[T] = new TSType[T] { val get = tt }

  def of[T](implicit tsType: TSType[T]): TypescriptType = tsType.get
}

object TSNamedType {
  def apply[T](tt: TypescriptNamedType): TSNamedType[T] = new TSNamedType[T] {
    val get = tt
  }

  def fromString[T](s: String): TSNamedType[T] =
    TypescriptType.fromString(s) match {
      case t: TSExternalName => TSNamedType(t)
      case _ => throw new IllegalArgumentException(s"String $s is a ")
    }
}

@implicitNotFound(
  "Could not find a TSIType[${T}] in scope. If you have defined a typescript mapping, we can only use typescript interface types at this location.")
trait TSIType[T] extends TSNamedType[T] { self =>
  override def get: TSInterface
}

object TSIType {
  def apply[T](tt: TSInterface): TSIType[T] = new TSIType[T] { val get = tt }

  def fromCaseClass[T]: TSIType[T] = macro Macros.generateInterface[T]
} 

//设置package包名称以及导入依赖的类
package korolev.util

import korolev.Async
import korolev.util.Scheduler.{Cancel, JobHandler}

import scala.annotation.implicitNotFound
import scala.concurrent.duration.FiniteDuration

@implicitNotFound("Scheduler for ${F} is not found. Ensure that it is passed to the scope (import korolev.execution.defaultScheduler)")
abstract class Scheduler[F[+ _] : Async] {
  def scheduleOnce[T](delay: FiniteDuration)(job: => T): JobHandler[F, T]
  def schedule[U](interval: FiniteDuration)(job: => U): Cancel
}

object Scheduler {

  type Cancel = () => Unit

  case class JobHandler[F[+_]: Async, +T](
    cancel: Cancel,
    result: F[T]
  )
} 

//设置package包名称以及导入依赖的类
package robot

import robot.RobotAt._
import shapeless._
import shapeless.nat._
import shapeless.ops.hlist.LeftFolder
import shapeless.ops.nat._

import scala.annotation.implicitNotFound

case class RobotAt[latitude <: Nat: isInsideWarehouse, longitude <: Nat: isInsideWarehouse]() {

  def move(towardsDirection: Direction)(
    implicit
    lookForA: ProofThatItCanMove[towardsDirection.type, latitude, longitude]
  ) = lookForA.validMove()

  def moveAlongRoute[head <: Direction, tail <: HList](route: head :: tail)(
    implicit
    moveAlong: FollowRoute[head :: tail, RobotAt[latitude, longitude], Router.type]
  ): moveAlong.Out = moveAlong(route, RobotAt[latitude, longitude]())
}

object RobotAt {
  @implicitNotFound(
    """Illegal route: cannot move along route=${route} from position=${initialPosition} when using Router=${router}.
Please ensure robot stays within the confines of the warehouse (_0 <= position <= _9)."""
  )
  type FollowRoute[route <: HList, initialPosition, router] = LeftFolder[route, initialPosition, router]

  @implicitNotFound("Illegal position: ${position} is not <= _9")
  type isInsideWarehouse[position <: Nat] = position LTEq _9
}

object Warehouse {
  def withRobotAt[latitude <: Nat: isInsideWarehouse, longitude <: Nat: isInsideWarehouse]() = RobotAt[latitude, longitude]()
} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.types

import org.scalarules.finance.core.Quantity
import org.scalarules.finance.nl._

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class MultipliableValues available in scope for combination ${A} * ${B} = ${C}")
trait MultipliableValues[A, B, C] {
  def multiply(a: A, b: B): C

  def leftUnit: A
  def rightUnit: B
}

object MultipliableValues {
  implicit def bigDecimalTimesBigDecimal: MultipliableValues[BigDecimal, BigDecimal, BigDecimal] = new MultipliableValues[BigDecimal, BigDecimal, BigDecimal] {
    override def multiply(a: BigDecimal, b: BigDecimal): BigDecimal = a * b
    override def leftUnit: BigDecimal = 0
    override def rightUnit: BigDecimal = 0
  }
  implicit def somethingTimesBigDecimal[N : Quantity]: MultipliableValues[N, BigDecimal, N] = new MultipliableValues[N, BigDecimal, N] {
    private val ev = implicitly[Quantity[N]]
    override def multiply(a: N, b: BigDecimal): N = ev.multiply(a, b)
    override def leftUnit: N = ev.zero
    override def rightUnit: BigDecimal = 0
  }
  implicit def bigDecimalTimesSomething[N : Quantity]: MultipliableValues[BigDecimal, N, N] = new MultipliableValues[BigDecimal, N, N] {
    private val ev = implicitly[Quantity[N]]
    override def multiply(a: BigDecimal, b: N): N = ev.multiply(b, a)
    override def leftUnit: BigDecimal = 0
    override def rightUnit: N = ev.zero
  }
  implicit def quantityTimesPercentage[N : Quantity]: MultipliableValues[N, Percentage, N] = new MultipliableValues[N, Percentage, N] {
    private val ev = implicitly[Quantity[N]]
    override def multiply(a: N, b: Percentage): N = b * a
    override def leftUnit: N = ev.zero
    override def rightUnit: Percentage = 0.procent
  }
  implicit def percentageTimesQuantity[N : Quantity]: MultipliableValues[Percentage, N, N] = new MultipliableValues[Percentage, N, N] {
    private val ev = implicitly[Quantity[N]]
    override def multiply(a: Percentage, b: N): N = a * b
    override def leftUnit: Percentage = 0.procent
    override def rightUnit: N = ev.zero
  }
  implicit def bedragTimesPeriode: MultipliableValues[Bedrag, Periode, Bedrag] = new MultipliableValues[Bedrag, Periode, Bedrag] {
    override def multiply(a: Bedrag, b: Periode): Bedrag = a * b.inMaanden
    override def leftUnit: Bedrag = 0.euro
    override def rightUnit: Periode = 0.maanden
  }
} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.types

import org.scalarules.finance.core.Quantity

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class AddableValue available in scope for combination ${A} + ${B} = ${C}")
trait AddableValues[A, B, C] {
  def plus(a: A, b: B): C

  def leftUnit: A
  def rightUnit: B
}

object AddableValues {
  implicit def bigDecimalAddedToBigDecimal: AddableValues[BigDecimal, BigDecimal, BigDecimal] = new AddableValues[BigDecimal, BigDecimal, BigDecimal] {
    override def plus(a: BigDecimal, b: BigDecimal): BigDecimal = a + b
    override def leftUnit: BigDecimal = 0
    override def rightUnit: BigDecimal = 0
  }
  implicit def intAddedToInt: AddableValues[Int, Int, Int] = new AddableValues[Int, Int, Int] {
    override def plus(a: Int, b: Int): Int = a + b
    override def leftUnit: Int = 0
    override def rightUnit: Int = 0
  }
  implicit def quantityAddedToQuantity[N : Quantity]: AddableValues[N, N, N] = new AddableValues[N, N, N] {
    private val ev = implicitly[Quantity[N]]
    override def plus(a: N, b: N): N = ev.plus(a, b)
    override def leftUnit: N = ev.zero
    override def rightUnit: N = ev.zero
  }
} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.types

import org.scalarules.finance.core.Quantity

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class SubtractableValues available in scope for combination ${A} - ${B} = ${C}")
trait SubtractableValues[A, B, C] {
  def minus(a: A, b: B): C

  def leftUnit: A
  def rightUnit: B
}

object SubtractableValues {
  implicit def bigDecimalSubtractedByBigDecimal: SubtractableValues[BigDecimal, BigDecimal, BigDecimal] = new SubtractableValues[BigDecimal, BigDecimal, BigDecimal] {
    override def minus(a: BigDecimal, b: BigDecimal): BigDecimal = a - b
    override def leftUnit: BigDecimal = 0
    override def rightUnit: BigDecimal = 0
  }
  implicit def quantitySubtractedByQuantity[N : Quantity]: SubtractableValues[N, N, N] = new SubtractableValues[N, N, N] {
    private val ev = implicitly[Quantity[N]]
    override def minus(a: N, b: N): N = ev.minus(a, b)
    override def leftUnit: N = ev.zero
    override def rightUnit: N = ev.zero
  }
} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.operators

import org.scalarules.dsl.core.types.AddableValues

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class Addable available in scope for combination ${A} + ${B} = ${C}")
sealed trait Addable[A, B, C] extends BinaryOperable[A, B, C] {
  def operation(a: A, b: B): C

  def identityLeft: A
  def identityRight: B

  def representation: String = "+"
}

object Addable {
  implicit def valueAddedToValue[A, B, C](implicit ev: AddableValues[A, B, C]): Addable[A, B, C] = new Addable[A, B, C] {
    override def operation(n: A, m: B): C = ev.plus(n, m)
    override def identityLeft = ev.leftUnit
    override def identityRight = ev.rightUnit
  }
  implicit def listAddedToList[A, B, C](implicit ev: AddableValues[A, B, C]): Addable[List[A], List[B], List[C]] = new Addable[List[A], List[B], List[C]] {
    override def operation(n: List[A], m: List[B]): List[C] = n.zipAll(m, ev.leftUnit, ev.rightUnit).map(t => ev.plus(t._1, t._2))
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = List(ev.rightUnit)
  }
  implicit def listAddedToValue[A, B, C](implicit ev: AddableValues[A, B, C]): Addable[List[A], B, List[C]] = new Addable[List[A], B, List[C]] {
    override def operation(n: List[A], m: B): List[C] = n.map( ev.plus(_, m) )
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = ev.rightUnit
  }
  implicit def valueAddedToList[A, B, C](implicit ev: AddableValues[A, B, C]): Addable[A, List[B], List[C]] = new Addable[A, List[B], List[C]] {
    override def operation(n: A, m: List[B]): List[C] = m.map( ev.plus(n, _) )
    override def identityLeft = ev.leftUnit
    override def identityRight = List(ev.rightUnit)
  }
} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.operators

import org.scalarules.dsl.core.types.MultipliableValues

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class Multipliabe available in scope for combination ${A} * ${B} = ${C}")
sealed trait Multipliable[A, B, C] extends BinaryOperable[A, B, C] {
  def operation(a: A, b: B): C

  def identityLeft: A
  def identityRight: B

  def representation: String = "*"
}

object Multipliable {
  implicit def valueMultipliedByValue[A, B, C](implicit ev: MultipliableValues[A, B, C]): Multipliable[A, B, C] = new Multipliable[A, B, C] {
    override def operation(n: A, m: B): C = ev.multiply(n, m)
    override def identityLeft = ev.leftUnit
    override def identityRight = ev.rightUnit
  }
  implicit def listMultipliedByList[A, B, C](implicit ev: MultipliableValues[A, B, C]): Multipliable[List[A], List[B], List[C]] = new Multipliable[List[A], List[B], List[C]] {
    override def operation(n: List[A], m: List[B]): List[C] = n.zip(m).map(t => ev.multiply(t._1, t._2))
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = List(ev.rightUnit)
  }
  implicit def listMultipliedByValue[A, B, C](implicit ev: MultipliableValues[A, B, C]): Multipliable[List[A], B, List[C]] = new Multipliable[List[A], B, List[C]] {
    override def operation(n: List[A], m: B): List[C] = n.map( ev.multiply(_, m) )
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = ev.rightUnit
  }
  implicit def valueMultipliedByList[A, B, C](implicit ev: MultipliableValues[A, B, C]): Multipliable[A, List[B], List[C]] = new Multipliable[A, List[B], List[C]] {
    override def operation(n: A, m: List[B]): List[C] = m.map( ev.multiply(n, _) )
    override def identityLeft = ev.leftUnit
    override def identityRight = List(ev.rightUnit)
  }

} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.operators

import org.scalarules.dsl.core.types.SubtractableValues

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class Subtractable available in scope for combination ${A} - ${B} = ${C}")
trait Subtractable[A, B, C] extends BinaryOperable[A, B, C] {
  def operation(a: A, b: B): C

  def identityLeft: A
  def identityRight: B

  def representation: String = "-"
}

object Subtractable {
  implicit def valueSubtractedByValue[A, B, C](implicit ev: SubtractableValues[A, B, C]): Subtractable[A, B, C] = new Subtractable[A, B, C] {
    override def operation(n: A, m: B): C = ev.minus(n, m)
    override def identityLeft = ev.leftUnit
    override def identityRight = ev.rightUnit
  }
  implicit def listSubtractedByList[A, B, C](implicit ev: SubtractableValues[A, B, C]): Subtractable[List[A], List[B], List[C]] = new Subtractable[List[A], List[B], List[C]] {
    override def operation(n: List[A], m: List[B]): List[C] = n.zipAll(m, ev.leftUnit, ev.rightUnit).map(t => ev.minus(t._1, t._2))
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = List(ev.rightUnit)
  }
  implicit def listSubtractedByValue[A, B, C](implicit ev: SubtractableValues[A, B, C]): Subtractable[List[A], B, List[C]] = new Subtractable[List[A], B, List[C]] {
    override def operation(n: List[A], m: B): List[C] = n.map( ev.minus(_, m) )
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = ev.rightUnit
  }
  implicit def valueSubtractedByList[A, B, C](implicit ev: SubtractableValues[A, B, C]): Subtractable[A, List[B], List[C]] = new Subtractable[A, List[B], List[C]] {
    override def operation(n: A, m: List[B]): List[C] = m.map( ev.minus(n, _) )
    override def identityLeft = ev.leftUnit
    override def identityRight = List(ev.rightUnit)
  }
} 

//设置package包名称以及导入依赖的类
package org.scalarules.dsl.core.operators

import org.scalarules.dsl.core.types.DivisibleValues

import scala.annotation.implicitNotFound


@implicitNotFound("No member of type class Divisible available in scope for combination ${A} / ${B} = ${C}")
sealed trait Divisible[A, B, C] extends BinaryOperable[A, B, C] {
  def operation(a: A, b: B): C

  def identityLeft: A
  def identityRight: B

  def representation: String = "/"
}

object Divisible {
  implicit def valueDividedByValue[A, B, C](implicit ev: DivisibleValues[A, B, C]): Divisible[A, B, C] = new Divisible[A, B, C] {
    override def operation(n: A, m: B): C = ev.divide(n, m)
    override def identityLeft = ev.leftUnit
    override def identityRight = ev.rightUnit
  }
  implicit def listDividedByList[A, B, C](implicit ev: DivisibleValues[A, B, C]): Divisible[List[A], List[B], List[C]] = new Divisible[List[A], List[B], List[C]] {
    override def operation(n: List[A], m: List[B]): List[C] = n.zip(m).map(t => ev.divide(t._1, t._2))
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = List(ev.rightUnit)
  }
  implicit def listDividedByValue[A, B, C](implicit ev: DivisibleValues[A, B, C]): Divisible[List[A], B, List[C]] = new Divisible[List[A], B, List[C]] {
    override def operation(n: List[A], m: B): List[C] = n.map( ev.divide(_, m) )
    override def identityLeft = List(ev.leftUnit)
    override def identityRight = ev.rightUnit
  }
  implicit def valueDividedByList[A, B, C](implicit ev: DivisibleValues[A, B, C]): Divisible[A, List[B], List[C]] = new Divisible[A, List[B], List[C]] {
    override def operation(n: A, m: List[B]): List[C] = m.map( ev.divide(n, _) )
    override def identityLeft = ev.leftUnit
    override def identityRight = List(ev.rightUnit)
  }
} 

//设置package包名称以及导入依赖的类
package superquants

import scala.annotation.implicitNotFound

package object laws {

  @implicitNotFound("Not found Law to make Operation[${Op}] for operand1: ${P1}, and operand2: ${P2}")
  trait LawTrait[P1, Op <: Operation, P2] {
    type Out

    def apply(p1: P1, p2: P2): Out
  }

  type Law[P1, O <: Operation, P2, Out0] = LawTrait[P1, O, P2] {type Out = Out0}

  def Law[P1, O <: Operation, P2, Out0](f: (P1, P2) => Any) = new LawTrait[P1, O, P2] {
    type Out = Out0

    def apply(p1: P1, p2: P2): Out0 = f(p1, p2).asInstanceOf[Out0]
  }

  implicit class LawOps[T](val __p1:T) extends AnyVal {
    def multiply[U](p2:U)(implicit law:LawTrait[T, Multiply,U]):law.Out = law(__p1, p2)
    def divide[U](p2:U)(implicit law:LawTrait[T, Divide, U]):law.Out = law(__p1, p2)
    def minus[U](p2:U)(implicit law:LawTrait[T, Minus, U]):law.Out = law(__p1, p2)
    def plus[U](p2:U)(implicit law:LawTrait[T, Plus, U]):law.Out = law(__p1, p2)
  }
} 

//设置package包名称以及导入依赖的类
package ru.pavkin.todoist.api.utils

import scala.annotation.implicitNotFound
import shapeless._

@implicitNotFound("Implicit not found: NotContains[${L}, ${U}]. HList already contains type ${U}")
trait NotContainsConstraint[L <: HList, U]

object NotContainsConstraint {
  def apply[L <: HList, U](implicit ev: NotContainsConstraint[L, U]): NotContainsConstraint[L, U] = ev

  implicit def nilNotContains[U]: NotContainsConstraint[HNil, U] =
    new NotContainsConstraint[HNil, U] {}

  implicit def recurse[H <: HList, T, U](implicit
                                         ev: H NotContainsConstraint U,
                                         ev2: U =:!= T): NotContainsConstraint[T :: H, U] =
    new NotContainsConstraint[T :: H, U] {}
} 

//设置package包名称以及导入依赖的类
package io.allquantor.protocol.polymorphism

import io.allquantor.protocol.Coordinates

import scala.annotation.implicitNotFound
import scala.util.Try

@implicitNotFound("Implicit not found for ${T}")
trait CoordinatorParser[T] {
  def parse(value: T): Coordinates
}

object CoordinatorParser {
  def parseCoordinates[T: CoordinatorParser](value: T): Coordinates = implicitly[CoordinatorParser[T]].parse(value)

  implicit val stringCoordinates = new CoordinatorParser[String] {
    override def parse(value: String): Coordinates = {
      val (lat, long, name): (Double, Double, String) = Try(value.split(",")).flatMap { c =>
        Try(
          (
            c(0).toDouble,
            c(1).toDouble,
            c(2)
          )
        )
      }.getOrElse(
        (0, 0, "----Error Parsed----")
      )
      Coordinates(lat, long, name)
    }
  }

} 

//设置package包名称以及导入依赖的类
package sangria.streaming

import scala.annotation.implicitNotFound

@implicitNotFound(msg = "${Res} is invalid type for the resulting GraphQL type ${Out}.")
trait ValidOutStreamType[-Res, +Out]

object ValidOutStreamType extends LowPrioValidOutType {
  implicit def validSubclass[Res, Out](implicit ev: Res <:< Out) = valid.asInstanceOf[ValidOutStreamType[Res, Out]]
  implicit def validNothing[Out] = valid.asInstanceOf[ValidOutStreamType[Nothing, Out]]
  implicit def validOption[Res, Out](implicit ev: Res <:< Out) = valid.asInstanceOf[ValidOutStreamType[Res, Option[Out]]]
}

trait LowPrioValidOutType {
  val valid = new ValidOutStreamType[Any, Any] {}

  implicit def validSeq[Res, Out](implicit ev: Res <:< Out) = valid.asInstanceOf[ValidOutStreamType[Res, Seq[Out]]]
}