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Diffstat (limited to 'src/main/scala/cc/spray/json/formats/StandardFormats.scala')
| -rw-r--r-- | src/main/scala/cc/spray/json/formats/StandardFormats.scala | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/main/scala/cc/spray/json/formats/StandardFormats.scala b/src/main/scala/cc/spray/json/formats/StandardFormats.scala new file mode 100644 index 0000000..91e21d3 --- /dev/null +++ b/src/main/scala/cc/spray/json/formats/StandardFormats.scala @@ -0,0 +1,101 @@ +package cc.spray.json +package formats + +/* + * Original implementation (C) 2009-2011 Debasish Ghosh + * Adapted and extended in 2011 by Mathias Doenitz + * + * 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. + */ + +trait StandardFormats { + + private type JF[T] = JsonFormat[T] // simple alias for reduced verbosity + + implicit def optionFormat[T :JF] = new JF[Option[T]] { + def write(option: Option[T]) = option match { + case Some(x) => x.toJson + case None => JsNull + } + def read(value: JsValue) = value match { + case JsNull => None + case x => Some(x.fromJson) + } + } + + implicit def tuple1Format[A :JF] = new JF[Tuple1[A]] { + def write(t: Tuple1[A]) = t._1.toJson + def read(value: JsValue) = Tuple1(value.fromJson[A]) + } + + implicit def tuple2Format[A :JF, B :JF] = new JF[(A, B)] { + def write(t: (A, B)) = JsArray(t._1.toJson, t._2.toJson) + def read(value: JsValue) = value match { + case JsArray(a :: b :: Nil) => (a.fromJson[A], b.fromJson[B]) + case _ => throw new DeserializationException("Tuple2 expected") + } + } + + implicit def tuple3Format[A :JF, B :JF, C :JF] = new JF[(A, B, C)] { + def write(t: (A, B, C)) = JsArray(t._1.toJson, t._2.toJson, t._3.toJson) + def read(value: JsValue) = value match { + case JsArray(a :: b :: c :: Nil) => (a.fromJson[A], b.fromJson[B], c.fromJson[C]) + case _ => throw new DeserializationException("Tuple3 expected") + } + } + + implicit def tuple4Format[A :JF, B :JF, C :JF, D :JF] = new JF[(A, B, C, D)] { + def write(t: (A, B, C, D)) = JsArray(t._1.toJson, t._2.toJson, t._3.toJson, t._4.toJson) + def read(value: JsValue) = value match { + case JsArray(a :: b :: c :: d :: Nil) => (a.fromJson[A], b.fromJson[B], c.fromJson[C], d.fromJson[D]) + case _ => throw new DeserializationException("Tuple4 expected") + } + } + + implicit def tuple5Format[A :JF, B :JF, C :JF, D :JF, E :JF] = { + new JF[(A, B, C, D, E)] { + def write(t: (A, B, C, D, E)) = JsArray(t._1.toJson, t._2.toJson, t._3.toJson, t._4.toJson, t._5.toJson) + def read(value: JsValue) = value match { + case JsArray(a :: b :: c :: d :: e :: Nil) => { + (a.fromJson[A], b.fromJson[B], c.fromJson[C], d.fromJson[D], e.fromJson[E]) + } + case _ => throw new DeserializationException("Tuple5 expected") + } + } + } + + implicit def tuple6Format[A :JF, B :JF, C :JF, D :JF, E :JF, F: JF] = { + new JF[(A, B, C, D, E, F)] { + def write(t: (A, B, C, D, E, F)) = JsArray(t._1.toJson, t._2.toJson, t._3.toJson, t._4.toJson, t._5.toJson, t._6.toJson) + def read(value: JsValue) = value match { + case JsArray(a :: b :: c :: d :: e :: f :: Nil) => { + (a.fromJson[A], b.fromJson[B], c.fromJson[C], d.fromJson[D], e.fromJson[E], f.fromJson[F]) + } + case _ => throw new DeserializationException("Tuple6 expected") + } + } + } + + implicit def tuple7Format[A :JF, B :JF, C :JF, D :JF, E :JF, F: JF, G: JF] = { + new JF[(A, B, C, D, E, F, G)] { + def write(t: (A, B, C, D, E, F, G)) = JsArray(t._1.toJson, t._2.toJson, t._3.toJson, t._4.toJson, t._5.toJson, t._6.toJson, t._6.toJson) + def read(value: JsValue) = value match { + case JsArray(a :: b :: c :: d :: e :: f :: g :: Nil) => { + (a.fromJson[A], b.fromJson[B], c.fromJson[C], d.fromJson[D], e.fromJson[E], f.fromJson[F], g.fromJson[G]) + } + case _ => throw new DeserializationException("Tuple7 expected") + } + } + } + +}
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