JS backend: compile primitive iterators from builtins as part of stdlib.

js/js.translator/src/org/jetbrains/k2js/translate/context/StaticContext.java

@@ -39,6 +39,7 @@ import org.jetbrains.k2js.translate.utils.JsAstUtils;
 import java.util.Map;
 
 import static org.jetbrains.jet.lang.resolve.DescriptorToSourceUtils.descriptorToDeclaration;
+import static org.jetbrains.k2js.config.LibrarySourcesConfig.STDLIB_JS_MODULE_NAME;
 import static org.jetbrains.k2js.translate.utils.AnnotationsUtils.*;
 import static org.jetbrains.k2js.translate.utils.JsDescriptorUtils.*;
 import static org.jetbrains.k2js.translate.utils.ManglingUtils.getMangledName;
@@ -467,6 +468,8 @@ public final class StaticContext {
                 }
 
                 private String getExternalModuleName(DeclarationDescriptor descriptor) {
+                    if (isBuiltin(descriptor)) return STDLIB_JS_MODULE_NAME;
+
                     PsiElement element = descriptorToDeclaration(descriptor);
                     if (element == null && descriptor instanceof PropertyAccessorDescriptor) {
                         element = descriptorToDeclaration(((PropertyAccessorDescriptor) descriptor).getCorrespondingProperty());

js/js.translator/testData/inheritance/cases/inheritFromCharIterator.kt

@@ -0,0 +1,19 @@
+package foo
+
+class MyCharIterator : CharIterator() {
+    val data = array('O', 'K')
+    var i = 0
+
+    override fun hasNext(): Boolean = i < data.size
+    override fun nextChar(): Char = data[i++]
+}
+
+fun box(): String {
+    var r = ""
+
+    for (v in MyCharIterator()) {
+        r += v
+    }
+
+    return r
+}