Add helper function constructing a jsonFormat from Readers and Writer, implicit conversions from functions

1 files changed, 12 insertions, 0 deletions

diff --git a/src/main/scala/cc/spray/json/JsonFormat.scala b/src/main/scala/cc/spray/json/JsonFormat.scala
index 94a2576..0fedd3f 100644
--- a/src/main/scala/cc/spray/json/JsonFormat.scala
+++ b/src/main/scala/cc/spray/json/JsonFormat.scala
@@ -24,6 +24,12 @@ 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.
  */
@@ -31,6 +37,12 @@ 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.
  */