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/*
* 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.
*/
package spray.json
import annotation.implicitNotFound
/**
* Provides the JSON deserialization for type T.
*/
@implicitNotFound(msg = "Cannot find JsonReader or JsonFormat type class for ${T}")
trait JsonReader[T] {
def read(json: JsValue): T
}
object JsonReader {
implicit def func2Reader[T](f: JsValue => T): JsonReader[T] = new JsonReader[T] {
def read(json: JsValue) = f(json)
}
}
/**
* Provides the JSON serialization for type T.
*/
@implicitNotFound(msg = "Cannot find JsonWriter or JsonFormat type class for ${T}")
trait JsonWriter[T] {
def write(obj: T): JsValue
}
object JsonWriter {
implicit def func2Writer[T](f: T => JsValue): JsonWriter[T] = new JsonWriter[T] {
def write(obj: T) = f(obj)
}
}
/**
* Provides the JSON deserialization and serialization for type T.
*/
trait JsonFormat[T] extends JsonReader[T] with JsonWriter[T]
/**
* A special JsonReader capable of reading a legal JSON root object, i.e. either a JSON array or a JSON object.
*/
@implicitNotFound(msg = "Cannot find RootJsonReader or RootJsonFormat type class for ${T}")
trait RootJsonReader[T] extends JsonReader[T]
/**
* A special JsonWriter capable of writing a legal JSON root object, i.e. either a JSON array or a JSON object.
*/
@implicitNotFound(msg = "Cannot find RootJsonWriter or RootJsonFormat type class for ${T}")
trait RootJsonWriter[T] extends JsonWriter[T]
/**
* A special JsonFormat signaling that the format produces a legal JSON root object, i.e. either a JSON array
* or a JSON object.
*/
trait RootJsonFormat[T] extends JsonFormat[T] with RootJsonReader[T] with RootJsonWriter[T]
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