Created MutableNavigationStateSerializer

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

@@ -47,6 +47,7 @@ sealed interface NavigationState<T> {
 /**
  * A mutable version of [NavigationState] that allows changing of the underlying wrapped state value.
  */
+@Serializable(with = MutableNavigationStateSerializer::class)
 internal sealed interface MutableNavigationState<T> : NavigationState<T> {
 
  /**
@@ -179,3 +180,44 @@ internal class NavigationStateSerializer<T> internal constructor(
  override fun toString(): String =
  "NavigationStateSerializer(delegateSerializer=$delegateSerializer)"
 }
+
+/**
+ * A [KSerializer] for a [MutableNavigationState].
+ */
+internal class MutableNavigationStateSerializer<T> internal constructor(
+ elementSerializer: KSerializer<T>
+) : KSerializer<MutableNavigationState<T>> {
+
+ private val delegateSerializer = PersistedNavigationStateSnapshot.serializer(elementSerializer)
+
+ override val descriptor: SerialDescriptor
+ get() = delegateSerializer.descriptor
+
+ override fun serialize(encoder: Encoder, value: MutableNavigationState<T>) {
+ val snapshot = PersistedNavigationStateSnapshot(initial = value.initial, current = value.current)
+
+ delegateSerializer.serialize(encoder = encoder, value = snapshot)
+ }
+
+ override fun deserialize(decoder: Decoder): MutableNavigationState<T> {
+ val snapshot = delegateSerializer.deserialize(decoder = decoder)
+
+ return mutableNavigationStateOf(initial = snapshot.initial).apply {
+ this.update(state = snapshot.current)
+ }
+ }
+
+ override fun equals(other: Any?): Boolean {
+ if (this === other) return true
+
+ if (other !is MutableNavigationStateSerializer<*>) return false
+
+ return delegateSerializer == other.delegateSerializer
+ }
+
+ override fun hashCode(): Int =
+ delegateSerializer.hashCode()
+
+ override fun toString(): String =
+ "MutableNavigationStateSerializer(delegateSerializer=$delegateSerializer)"
+}

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

@@ -295,9 +295,8 @@ internal class StackSerializer<E> internal constructor(
  return delegateSerializer == other.delegateSerializer
  }
 
- override fun hashCode(): Int {
- return delegateSerializer.hashCode()
- }
+ override fun hashCode(): Int =
+ delegateSerializer.hashCode()
 
  override fun toString(): String =
  "StackSerializer(delegateSerializer=$delegateSerializer)"
@@ -329,9 +328,8 @@ internal class MutableStackSerializer<E> internal constructor(
  return delegateSerializer == other.delegateSerializer
  }
 
- override fun hashCode(): Int {
- return delegateSerializer.hashCode()
- }
+ override fun hashCode(): Int =
+ delegateSerializer.hashCode()
 
  override fun toString(): String =
  "MutableStackSerializer(delegateSerializer=$delegateSerializer)"