/* * Copyright (c) 2013 Miles Sabin * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package shapeless package syntax package std /** * Conversions between ordinary functions and `HList` functions. * * The implicits defined by this object enhance ordinary functions (resp. HList functions) with a `toProduct` (resp. * `fromProduct`) method which creates an equivalently typed `HList` function (resp. ordinary function). * * @author Miles Sabin */ object function { import ops.function._ implicit def fnHListOps[F](t : F)(implicit fnHLister : FnToProduct[F]) = new FnHListOps[fnHLister.Out] { def toProduct = fnHLister(t) } implicit def fnUnHListOps[F](t : F)(implicit fnUnHLister : FnFromProduct[F]) = new FnUnHListOps[fnUnHLister.Out] { def fromProduct = fnUnHLister(t) } } trait FnHListOps[HLFn] { def toProduct : HLFn } trait FnUnHListOps[F] { def fromProduct : F }