Move EndOfChain class to internal package

Author: ilya-g

kotlinx-collections-immutable/src/main/kotlin/kotlinx/collections/immutable/implementations/persistentOrderedMap/PersistentOrderedMap.kt

@@ -20,10 +20,9 @@ import kotlinx.collections.immutable.ImmutableCollection
 import kotlinx.collections.immutable.ImmutableSet
 import kotlinx.collections.immutable.PersistentMap
 import kotlinx.collections.immutable.implementations.immutableMap.PersistentHashMap
+import kotlinx.collections.immutable.internal.EndOfChain
 import kotlinx.collections.immutable.mutate
 
-internal object EndOfChain
-
 internal class LinkedValue<V>(val value: V, val previous: Any?, val next: Any?) {
     /** Constructs LinkedValue for a new single entry */
     constructor(value: V) : this(value, EndOfChain, EndOfChain)

kotlinx-collections-immutable/src/main/kotlin/kotlinx/collections/immutable/implementations/persistentOrderedMap/PersistentOrderedMapBuilder.kt

@@ -17,6 +17,7 @@
 package kotlinx.collections.immutable.implementations.persistentOrderedMap
 
 import kotlinx.collections.immutable.PersistentMap
+import kotlinx.collections.immutable.internal.EndOfChain
 
 internal class PersistentOrderedMapBuilder<K, V>(private var map: PersistentOrderedMap<K, V>) : AbstractMutableMap<K, V>(), PersistentMap.Builder<K, V> {
     internal var firstKey = map.firstKey

kotlinx-collections-immutable/src/main/kotlin/kotlinx/collections/immutable/implementations/persistentOrderedMap/PersistentOrderedMapBuilderContentIterators.kt

@@ -17,6 +17,7 @@
 package kotlinx.collections.immutable.implementations.persistentOrderedMap
 
 import kotlinx.collections.immutable.implementations.immutableMap.MapEntry
+import kotlinx.collections.immutable.internal.EndOfChain
 
 internal open class PersistentOrderedMapBuilderLinksIterator<K, V>(
         private var nextKey: Any?,

kotlinx-collections-immutable/src/main/kotlin/kotlinx/collections/immutable/implementations/persistentOrderedSet/PersistentOrderedSet.kt

@@ -18,7 +18,7 @@ package kotlinx.collections.immutable.implementations.persistentOrderedSet
 
 import kotlinx.collections.immutable.PersistentSet
 import kotlinx.collections.immutable.implementations.immutableMap.PersistentHashMap
-import kotlinx.collections.immutable.implementations.persistentOrderedMap.EndOfChain
+import kotlinx.collections.immutable.internal.EndOfChain
 import kotlinx.collections.immutable.mutate
 
 internal class Links(val previous: Any?, val next: Any?) {

kotlinx-collections-immutable/src/main/kotlin/kotlinx/collections/immutable/implementations/persistentOrderedSet/PersistentOrderedSetBuilder.kt

@@ -17,7 +17,7 @@
 package kotlinx.collections.immutable.implementations.persistentOrderedSet
 
 import kotlinx.collections.immutable.PersistentSet
-import kotlinx.collections.immutable.implementations.persistentOrderedMap.EndOfChain
+import kotlinx.collections.immutable.internal.EndOfChain
 
 internal class PersistentOrderedSetBuilder<E>(private var set: PersistentOrderedSet<E>) : AbstractMutableSet<E>(), PersistentSet.Builder<E> {
     internal var firstElement = set.firstElement

kotlinx-collections-immutable/src/main/kotlin/kotlinx/collections/immutable/internal/EndOfChain.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2016-2019 JetBrains s.r.o.
+ *
+ * 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 kotlinx.collections.immutable.internal
+
+internal object EndOfChain