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diff --git a/shared/src/main/scala/spray/json/JsValue.scala b/shared/src/main/scala/spray/json/JsValue.scala
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+/*
+ * Copyright (C) 2009-2011 Mathias Doenitz
+ * Inspired by a similar implementation by Nathan Hamblen
+ * (https://github.com/dispatch/classic)
+ *
+ * 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 collection.immutable
+import scala.collection.immutable.TreeMap
+
+/**
+  * The general type of a JSON AST node.
+ */
+sealed abstract class JsValue {
+  override def toString = compactPrint
+  def toString(printer: (JsValue => String)) = printer(this)
+  def compactPrint = CompactPrinter(this)
+  def prettyPrint = PrettyPrinter(this)
+  def sortedPrint = SortedPrinter(this)
+  def convertTo[T :JsonReader]: T = jsonReader[T].read(this)
+
+  /**
+   * Returns `this` if this JsValue is a JsObject, otherwise throws a DeserializationException with the given error msg.
+   */
+  def asJsObject(errorMsg: String = "JSON object expected"): JsObject = deserializationError(errorMsg)
+
+  /**
+   * Returns `this` if this JsValue is a JsObject, otherwise throws a DeserializationException.
+   */
+  def asJsObject: JsObject = asJsObject()
+
+  @deprecated("Superceded by 'convertTo'", "1.1.0")
+  def fromJson[T :JsonReader]: T = convertTo
+}
+
+/**
+  * A JSON object.
+ */
+case class JsObject(fields: Map[String, JsValue]) extends JsValue {
+  override def asJsObject(errorMsg: String) = this
+  def getFields(fieldNames: String*): immutable.Seq[JsValue] = fieldNames.toIterator.flatMap(fields.get).toList
+}
+object JsObject {
+  val empty = JsObject(TreeMap.empty[String, JsValue])
+  def apply(members: JsField*): JsObject = new JsObject(TreeMap(members: _*))
+  @deprecated("Use JsObject(JsValue*) instead", "1.3.0")
+  def apply(members: List[JsField]): JsObject = apply(members: _*)
+}
+
+/**
+  * A JSON array.
+ */
+case class JsArray(elements: Vector[JsValue]) extends JsValue {
+  @deprecated("Use JsArray(Vector[JsValue]) instead", "1.3.0")
+  def this(elements: List[JsValue]) = this(elements.toVector)
+}
+object JsArray {
+  val empty = JsArray(Vector.empty)
+  def apply(elements: JsValue*) = new JsArray(elements.toVector)
+  @deprecated("Use JsArray(Vector[JsValue]) instead", "1.3.0")
+  def apply(elements: List[JsValue]) = new JsArray(elements.toVector)
+}
+
+/**
+  * A JSON string.
+ */
+case class JsString(value: String) extends JsValue
+
+object JsString {
+  val empty = JsString("")
+  def apply(value: Symbol) = new JsString(value.name)
+}
+
+/**
+  * A JSON number.
+ */
+case class JsNumber(value: BigDecimal) extends JsValue
+object JsNumber {
+  val zero: JsNumber = apply(0)
+  def apply(n: Int) = new JsNumber(BigDecimal(n))
+  def apply(n: Long) = new JsNumber(BigDecimal(n))
+  def apply(n: Double) = n match {
+    case n if n.isNaN      => JsNull
+    case n if n.isInfinity => JsNull
+    case _                 => new JsNumber(BigDecimal(n))
+  }
+  def apply(n: BigInt) = new JsNumber(BigDecimal(n))
+  def apply(n: String) = new JsNumber(BigDecimal(n))
+  def apply(n: Array[Char]) = new JsNumber(BigDecimal(n))
+}
+
+/**
+  * JSON Booleans.
+ */
+sealed abstract class 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
+}
+
+/**
+  * The representation for JSON null.
+ */
+case object JsNull extends JsValue