blob: 96be8d2352399dbad35c14a26a57425ca94ba606 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* 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 cc.spray.json
/**
* Provides additional JsonFormats and helpers
*/
trait AdditionalFormats {
implicit object JsValueFormat extends JsonFormat[JsValue] {
def write(value: JsValue) = value
def read(value: JsValue) = value
}
def jsonFormat[T](reader: JsonReader[T], writer: JsonWriter[T]) = new JsonFormat[T] {
def write(obj: T) = writer.write(obj)
def read(json: JsValue) = reader.read(json)
}
/**
* Lazy wrapper around serialization. Useful when you want to serialize (mutually) recursive structures.
*/
def lazyFormat[T](format: => JsonFormat[T]) = new JsonFormat[T]{
lazy val delegate = format;
def write(x: T) = delegate.write(x);
def read(value: JsValue) = delegate.read(value);
}
/**
* Wraps an existing JsonReader with Exception protection.
*/
def safeReader[A :JsonReader] = new JsonReader[Either[Exception, A]] {
def read(json: JsValue) = {
try {
Right(json.fromJson)
} catch {
case e: Exception => Left(e)
}
}
}
}
|