/* * Copyright 2020 HM Revenue & Customs * * 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 uk.gov.hmrc.nisp.utils import play.api.libs.json.{JsError, JsSuccess, Reads} object EitherReads { implicit def eitherReads[A, B](implicit A: Reads[A], B: Reads[B]): Reads[Either[A, B]] = Reads[Either[A, B]] { json => A.reads(json) match { case JsSuccess(value, path) => JsSuccess(Left(value), path) case JsError(e1) => B.reads(json) match { case JsSuccess(value, path) => JsSuccess(Right(value), path) case JsError(e2) => JsError(JsError.merge(e1, e2)) } } } }