Lift Framework example source code file (Tuples.scala)

This example Lift Framework source code file (Tuples.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Lift Framework tags/keywords

a, b, b, c, c, d, d, e, jarray, json, json, jvalue, nil, unexpectedjsonerror

The Lift Framework Tuples.scala source code

/*
 * Copyright 2009-2010 WorldWide Conferencing, LLC
 *
 * 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 net.liftweb.json.scalaz

import scalaz._
import Scalaz._
import net.liftweb.json._

trait Tuples { this: Types =>
  implicit def Tuple2JSON[A: JSON, B: JSON]: JSON[(A, B)] = new JSON[(A, B)] {
    def read(json: JValue) = json match {
      case JArray(a :: b :: _) => 
        (fromJSON[A](a) |@| fromJSON[B](b)) { (a, b) => (a, b)  }
      case x => UnexpectedJSONError(x, classOf[JArray]).fail.liftFailNel
    }

    def write(value: (A, B)) = JArray(toJSON(value._1) :: toJSON(value._2) :: Nil)
  }

  implicit def Tuple3JSON[A: JSON, B: JSON, C: JSON]: JSON[(A, B, C)] = new JSON[(A, B, C)] {
    def read(json: JValue) = json match {
      case JArray(a :: b :: c :: _) => 
        (fromJSON[A](a) |@| fromJSON[B](b) |@| fromJSON[C](c)) { (a, b, c) => (a, b, c)  }
      case x => UnexpectedJSONError(x, classOf[JArray]).fail.liftFailNel
    }

    def write(value: (A, B, C)) = JArray(toJSON(value._1) :: toJSON(value._2) :: toJSON(value._3) :: Nil)
  }

  implicit def Tuple4JSON[A: JSON, B: JSON, C: JSON, D: JSON]: JSON[(A, B, C, D)] = new JSON[(A, B, C, D)] {
    def read(json: JValue) = json match {
      case JArray(a :: b :: c :: d :: _) => 
        (fromJSON[A](a) |@| fromJSON[B](b) |@| fromJSON[C](c) |@| fromJSON[D](d)) { (a, b, c, d) => (a, b, c, d)  }
      case x => UnexpectedJSONError(x, classOf[JArray]).fail.liftFailNel
    }

    def write(value: (A, B, C, D)) = JArray(toJSON(value._1) :: toJSON(value._2) :: toJSON(value._3) :: toJSON(value._4) :: Nil)
  }

  implicit def Tuple5JSON[A: JSON, B: JSON, C: JSON, D: JSON, E: JSON]: JSON[(A, B, C, D, E)] = new JSON[(A, B, C, D, E)] {
    def read(json: JValue) = json match {
      case JArray(a :: b :: c :: d :: e :: _) => 
        (fromJSON[A](a) |@| fromJSON[B](b) |@| fromJSON[C](c) |@| fromJSON[D](d) |@| fromJSON[E](e)) { (a, b, c, d, e) => (a, b, c, d, e)  }
      case x => UnexpectedJSONError(x, classOf[JArray]).fail.liftFailNel
    }

    def write(value: (A, B, C, D, E)) = JArray(toJSON(value._1) :: toJSON(value._2) :: toJSON(value._3) :: toJSON(value._4) :: toJSON(value._5) :: Nil)
  }

  implicit def Tuple6JSON[A: JSON, B: JSON, C: JSON, D: JSON, E: JSON, F: JSON]: JSON[(A, B, C, D, E, F)] = new JSON[(A, B, C, D, E, F)] {
    def read(json: JValue) = json match {
      case JArray(a :: b :: c :: d :: e :: f :: _) => 
        (fromJSON[A](a) |@| fromJSON[B](b) |@| fromJSON[C](c) |@| fromJSON[D](d) |@| fromJSON[E](e) |@| fromJSON[F](f)) { (a, b, c, d, e, f) => (a, b, c, d, e, f)  }
      case x => UnexpectedJSONError(x, classOf[JArray]).fail.liftFailNel
    }

    def write(value: (A, B, C, D, E, F)) = JArray(toJSON(value._1) :: toJSON(value._2) :: toJSON(value._3) :: toJSON(value._4) :: toJSON(value._5) :: toJSON(value._6) :: Nil)
  }
}