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author | Mathias <mathias@spray.cc> | 2011-05-06 11:11:37 +0200 |
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committer | Mathias <mathias@spray.cc> | 2011-05-06 11:11:37 +0200 |
commit | 0ce9cf8fce1dc475f3bb2a517e0a7698c9e0a5d9 (patch) | |
tree | 62de608642a30ec478411d27e94179ec64c5bd17 /src/main/scala/cc/spray/json/JsValue.scala | |
download | spray-json-0ce9cf8fce1dc475f3bb2a517e0a7698c9e0a5d9.tar.gz spray-json-0ce9cf8fce1dc475f3bb2a517e0a7698c9e0a5d9.tar.bz2 spray-json-0ce9cf8fce1dc475f3bb2a517e0a7698c9e0a5d9.zip |
Initial commit (split off from main spray codebase)
Diffstat (limited to 'src/main/scala/cc/spray/json/JsValue.scala')
-rw-r--r-- | src/main/scala/cc/spray/json/JsValue.scala | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/main/scala/cc/spray/json/JsValue.scala b/src/main/scala/cc/spray/json/JsValue.scala new file mode 100644 index 0000000..8781f73 --- /dev/null +++ b/src/main/scala/cc/spray/json/JsValue.scala @@ -0,0 +1,128 @@ +/* + * Original implementation (C) by the databinder-dispatch team + * https://github.com/n8han/Databinder-Dispatch + * Adapted and extended in 2011 by Mathias Doenitz + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +package cc.spray.json + +import formats._ +import collection.mutable.ListBuffer + +sealed trait JsValue { + override def toString = CompactPrinter(this) + def toString(printer: (JsValue => String)) = printer(this) + def fromJson[T :JsonReader]: T = jsonReader.read(this) +} + +object JsValue { + def apply(x: Any): JsValue = x match { + case null => JsNull + case true => JsTrue + case false => JsFalse + case x: JsValue => x + case x: String => JsString(x) + case x: Symbol => JsString(x.name) + case x: Int => JsNumber(x) + case x: Long => JsNumber(x) + case x: Short => JsNumber(x) + case x: Byte => JsNumber(x) + case x: Float => JsNumber(x) + case x: Double => JsNumber(x) + case x: BigInt => JsNumber(x) + case x: BigDecimal => JsNumber(x) + case x: Char => JsString(String.valueOf(x)) + case x: collection.Map[_, _] => JsObject(fromSeq(x)) + case x@ collection.Seq((_, _), _*) => JsObject(fromSeq(x.asInstanceOf[Seq[(_, _)]])) + case x: collection.Seq[_] => JsArray(x.toList.map(JsValue.apply)) + case x => throw new IllegalArgumentException(x.toString + " cannot be converted to a JsValue") + } + + private def fromSeq(seq: Iterable[(_, _)]) = { + val list = ListBuffer.empty[JsField] + seq.foreach { + case (key: String, value) => list += JsField(key, JsValue(value)) + case (key: Symbol, value) => list += JsField(key.name, JsValue(value)) + case (key: JsString, value) => list += JsField(key.value, JsValue(value)) + case (x, _) => throw new IllegalArgumentException(x.toString + " cannot be converted to a JsString") + } + list.toList + } + + def fromString(json: String) = JsonParser(json) + def toString(value: JsValue, printer: (JsValue => String) = CompactPrinter) = printer(value) +} + +case class JsString(value: String) extends JsValue + + +case class JsNumber(value: BigDecimal) extends JsValue + +object JsNumber { + def apply(n: Int) = new JsNumber(BigDecimal(n)) + def apply(n: Long) = new JsNumber(BigDecimal(n)) + def apply(n: Double) = new JsNumber(BigDecimal(n)) + def apply(n: BigInt) = new JsNumber(BigDecimal(n)) + def apply(n: String) = new JsNumber(BigDecimal(n)) +} + +case class JsObject(fields: List[JsField]) extends JsValue { + lazy val asMap: Map[String, JsValue] = { + val b = Map.newBuilder[String, JsValue] + for (JsField(name, value) <- fields) b += ((name, value)) + b.result() + } +} + +object JsObject { + def apply(members: JsField*) = new JsObject(members.toList) +} + + +case class JsField(name: String, value: JsValue) extends JsValue + +object JsField { + def apply(name: String, value: Any) = new JsField(name, JsValue(value)) +} + + +case class JsArray(elements: List[JsValue]) extends JsValue + +object JsArray { + def apply(elements: JsValue*) = new JsArray(elements.toList) +} + + +sealed trait JsBoolean extends JsValue { + def value: Boolean +} + +object JsBoolean { + def apply(x: Boolean): JsBoolean = if (x) JsTrue else JsFalse + def unapply(x: JsBoolean): Option[Boolean] = Some(x.value) +} + +case object JsTrue extends JsBoolean { + def value = true +} + +case object JsFalse extends JsBoolean { + def value = false +} + + +case object JsNull extends JsValue |