JS lib: added hasNext to Kotlin.ListIterator and fixed next.

#KT-6506 Fixed

Additionally made abstract AbstractList::get and AbstractCollection::size.

js/js.libraries/src/core/javautil.kt

@@ -26,7 +26,7 @@ public abstract class AbstractCollection<E>() : MutableCollection<E> {
     override fun retainAll(c: Collection<Any?>): Boolean = noImpl
 
     override fun clear(): Unit = noImpl
-    override fun size(): Int = noImpl
+    abstract override fun size(): Int
 
     override fun hashCode(): Int = noImpl
     override fun equals(other: Any?): Boolean = noImpl
@@ -34,7 +34,7 @@ public abstract class AbstractCollection<E>() : MutableCollection<E> {
 
 library
 public abstract class AbstractList<E>() : AbstractCollection<E>(), MutableList<E> {
-    override fun get(index: Int): E = noImpl
+    abstract override fun get(index: Int): E
     override fun set(index: Int, element: E): E = noImpl
 
     override fun add(e: E): Boolean = noImpl
@@ -60,6 +60,8 @@ public abstract class AbstractList<E>() : AbstractCollection<E>(), MutableList<E
 
 library
 public open class ArrayList<E>(capacity: Int = 0) : AbstractList<E>() {
+    override fun get(index: Int): E = noImpl
+    override fun size(): Int = noImpl
 }
 
 library
@@ -78,7 +80,9 @@ public open class LinkedList<E>() : AbstractList<E>() {
 library
 public open class HashSet<E>(
         initialCapacity: Int = DEFAULT_INITIAL_CAPACITY, loadFactor: Float = DEFAULT_LOAD_FACTOR
-) : AbstractCollection<E>(), MutableSet<E>
+) : AbstractCollection<E>(), MutableSet<E> {
+    override fun size(): Int = noImpl
+}
 
 library
 public trait SortedSet<E> : Set<E> {
@@ -86,12 +90,15 @@ public trait SortedSet<E> : Set<E> {
 
 library
 public open class TreeSet<E>() : AbstractCollection<E>(), MutableSet<E>, SortedSet<E> {
+    override fun size(): Int = noImpl
 }
 
 library
 public open class LinkedHashSet<E>(
         initialCapacity: Int = DEFAULT_INITIAL_CAPACITY, loadFactor: Float = DEFAULT_LOAD_FACTOR
-) : HashSet<E>(initialCapacity, loadFactor), MutableSet<E>
+) : HashSet<E>(initialCapacity, loadFactor), MutableSet<E> {
+    override fun size(): Int = noImpl
+}
 
 library
 public open class HashMap<K, V>(initialCapacity: Int = DEFAULT_INITIAL_CAPACITY, loadFactor: Float = DEFAULT_LOAD_FACTOR) : MutableMap<K, V> {

js/js.tests/test/org/jetbrains/k2js/test/semantics/AbstractListTest.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2010-2014 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 org.jetbrains.k2js.test.semantics;
+
+public final class AbstractListTest extends JavaClassesTest {
+
+    public AbstractListTest() {
+        super("abstractList/");
+    }
+
+    public void testIterator() throws Exception {
+        checkFooBoxIsOk();
+    }
+}

js/js.translator/testData/java/abstractList/cases/iterator.kt

@@ -0,0 +1,32 @@
+package foo
+
+import java.util.AbstractList
+
+class MyList<T>(vararg val data: T) : AbstractList<T>() {
+    override fun get(index: Int) = data[index]
+    override fun size() = data.size()
+}
+
+fun test<T>(expected: String, list: List<T>) {
+    var s = ""
+    for (e in list) {
+        s += "$e,"
+    }
+    assertEquals(expected, s)
+
+    val it = list.iterator()
+    s = ""
+    while (it.hasNext()) {
+        val e = it.next()
+        s += "$e,"
+    }
+    assertEquals(expected, s)
+}
+
+fun box(): String {
+
+    test("32,12,23,444,", MyList(32, 12, 23, 444))
+    test("", MyList<Any>())
+
+    return "OK"
+}

js/js.translator/testData/kotlin_lib.js

@@ -276,8 +276,11 @@
             this.size = list.size();
             this.index = 0;
         }, {
+            hasNext: function () {
+                return this.index < this.size;
+            },
             next: function () {
-                return this.list.get(this.index++);
+                return this.list.get_za3lpa$(this.index++);
             }
     });