Updated NavigationContextStacksSerializer to use composite encoder an…

…d decoder and added equals and hashcode implementation to NavigationContextStacks

navigation-core/src/commonMain/kotlin/com.chrynan.navigation/NavigationContextStacks.kt

@@ -121,6 +121,26 @@ internal class NavigationContextStacks<Destination : NavigationDestination, Cont
  * Returns a [Map] of the [Context] to [Stack] of [Destination]s.
  */
  fun toMap(): Map<Context, Stack<Destination>> = destinationStacksByContext
+
+ override fun equals(other: Any?): Boolean {
+ if (this === other) return true
+ if (other !is NavigationContextStacks<*, *>) return false
+
+ if (initialContext != other.initialContext) return false
+
+ return destinationStacksByContext == other.destinationStacksByContext
+ }
+
+ override fun hashCode(): Int {
+ var result = initialContext.hashCode()
+ result = 31 * result + destinationStacksByContext.hashCode()
+ return result
+ }
+
+ override fun toString(): String =
+ "NavigationContextStacks(" +
+ "initialContext=$initialContext, " +
+ "destinationStacksByContext=$destinationStacksByContext)"
 }
 
 /**
@@ -152,13 +172,35 @@ internal class NavigationContextStacksSerializer<Destination : NavigationDestina
  }
 
  override fun serialize(encoder: Encoder, value: NavigationContextStacks<Destination, Context>) {
- encoder.encodeSerializableValue(serializer = contextSerializer, value = value.initialContext)
- encoder.encodeSerializableValue(serializer = mapSerializer, value = value.toMap())
+ val compositeEncoder = encoder.beginStructure(descriptor)
+ compositeEncoder.encodeSerializableElement(
+ serializer = contextSerializer,
+ descriptor = descriptor,
+ index = 0,
+ value = value.initialContext
+ )
+ compositeEncoder.encodeSerializableElement(
+ serializer = mapSerializer,
+ descriptor = descriptor,
+ index = 1,
+ value = value.toMap()
+ )
+ compositeEncoder.endStructure(descriptor)
  }
 
  override fun deserialize(decoder: Decoder): NavigationContextStacks<Destination, Context> {
- val initialContext = decoder.decodeSerializableValue(deserializer = contextSerializer)
- val contextStacks = decoder.decodeSerializableValue(deserializer = mapSerializer)
+ val compositeDecoder = decoder.beginStructure(descriptor)
+ val initialContext = compositeDecoder.decodeSerializableElement(
+ deserializer = contextSerializer,
+ descriptor = descriptor,
+ index = 0
+ )
+ val contextStacks = compositeDecoder.decodeSerializableElement(
+ deserializer = mapSerializer,
+ descriptor = descriptor,
+ index = 1
+ )
+ compositeDecoder.endStructure(descriptor)
 
  return NavigationContextStacks(
  initialContext = initialContext,