Found and solved a problem which caused only one ancestor's constructor to be called. Added "super_init" method generation to InitializerVisitor. Worked on KotlinJsLib to solve this issue. This solution should evolve in the future.

js/src/com/google/dart/compiler/util/AstUtil.java

@@ -262,4 +262,10 @@ public class AstUtil {
         result.setQualifier(new JsThisRef());
         return result;
     }
+
+    public static JsBlock newBlock(List<JsStatement> statements) {
+        JsBlock result = new JsBlock();
+        result.setStatements(statements);
+        return result;
+    }
 }

translator/src/org/jetbrains/k2js/translate/BindingUtils.java

@@ -101,6 +101,10 @@ public final class BindingUtils {
         return superClassDescriptors;
     }
 
+    static public boolean hasAncestor(@NotNull BindingContext context, @NotNull JetClass classDeclaration) {
+        return !getSuperclassDescriptors(context, classDeclaration).isEmpty();
+    }
+
     static public boolean isStatement(@NotNull BindingContext context, @NotNull JetExpression expression) {
         return context.get(BindingContext.STATEMENT, expression);
     }

translator/src/org/jetbrains/k2js/translate/ClassTranslator.java

@@ -73,6 +73,7 @@ public final class ClassTranslator extends AbstractTranslator {
         return new JsObjectLiteral(propertyList);
     }
 
+    // TODO: names are inconsistent
     @NotNull
     private JsPropertyInitializer generateInitializeMethod(@NotNull JetClass classDeclaration) {
         JsPropertyInitializer initializer = new JsPropertyInitializer();

translator/src/org/jetbrains/k2js/translate/InitializerVisitor.java

@@ -43,10 +43,22 @@ public class InitializerVisitor extends TranslatorVisitor<List<JsStatement>> {
     @NotNull
     private JsBlock generateInitializerMethodBody(@NotNull JetClass classDeclaration,
                                                   @NotNull TranslationContext context) {
-        List<JsStatement> initializerStatements = classDeclaration.accept(this, context);
-        JsBlock block = new JsBlock();
-        block.setStatements(initializerStatements);
-        return block;
+
+        List<JsStatement> initializerStatements = generateCallToSuperMethod(classDeclaration, context);
+        initializerStatements.addAll(classDeclaration.accept(this, context));
+        return AstUtil.newBlock(initializerStatements);
+    }
+
+    @NotNull
+    private List<JsStatement> generateCallToSuperMethod(@NotNull JetClass classDeclaration,
+                                                        @NotNull TranslationContext context) {
+        List<JsStatement> result = new ArrayList<JsStatement>();
+        if (BindingUtils.hasAncestor(context.bindingContext(), classDeclaration)) {
+            JsName superMethodName = initializerMethodScope.declareName(Namer.SUPER_METHOD_NAME);
+            result.add(AstUtil.convertToStatement
+                    (AstUtil.newInvocation(AstUtil.thisQualifiedReference(superMethodName))));
+        }
+        return result;
     }
 
 

translator/src/org/jetbrains/k2js/translate/Namer.java

@@ -22,6 +22,7 @@ public final class Namer {
     private static final String SETTER_PREFIX = "set_";
     private static final String GETTER_PREFIX = "get_";
     private static final String BACKING_FIELD_PREFIX = "$";
+    public static final String SUPER_METHOD_NAME = "super_init";
     // public static final String DEFAULT_SETTER_PARAM_NAME = "val";
 
     public static String getClassObjectName() {

translator/src/org/jetbrains/k2js/translate/OperatorTable.java

@@ -37,7 +37,7 @@ public final class OperatorTable {
         binaryOperatorsMap.put(JetTokens.GTEQ, JsBinaryOperator.GTE);
         binaryOperatorsMap.put(JetTokens.LT, JsBinaryOperator.LT);
         binaryOperatorsMap.put(JetTokens.LTEQ, JsBinaryOperator.LTE);
-        binaryOperatorsMap.put(JetTokens.EQEQ, JsBinaryOperator.EQ);
+        binaryOperatorsMap.put(JetTokens.EQEQ, JsBinaryOperator.REF_EQ);
         binaryOperatorsMap.put(JetTokens.ANDAND, JsBinaryOperator.AND);
         binaryOperatorsMap.put(JetTokens.EXCLEQ, JsBinaryOperator.NEQ);
         binaryOperatorsMap.put(JetTokens.PERC, JsBinaryOperator.MOD);

translator/test/org/jetbrains/k2js/test/ClassInheritanceTest.java

@@ -23,6 +23,11 @@ public final class ClassInheritanceTest extends AbstractClassTest {
     public void methodOverride() throws Exception {
         testFooBoxIsTrue("methodOverride.kt");
     }
+
+    @Test
+    public void initializationOrder() throws Exception {
+        testFooBoxIsTrue("initializationOrder.kt");
+    }
 }
 
 

translator/testFiles/inheritance/cases/initializationOrder.kt

@@ -0,0 +1,26 @@
+namespace foo
+
+open class A() {
+
+    var order = ""
+    {
+        order = order + "A"
+    }
+}
+
+open class B() : A() {
+    {
+        order = order + "B"
+    }
+
+}
+
+class C() : B() {
+    {
+        order = order + "C"
+    }
+}
+
+fun box() : Boolean {
+    return (C().order == "ABC") && (B().order == "AB") && (A().order == "A")
+}

translator/testFiles/kotlin_lib.js

@@ -24,9 +24,7 @@ var Class = (function() {
       parent = properties.shift();
 
     function klass() {
-      if (parent != null) {
-        parent.prototype.initialize.apply(this)
-      }
+      this.initializing = klass;
       this.initialize.apply(this, arguments);
     }
 
@@ -40,6 +38,19 @@ var Class = (function() {
       parent.subclasses.push(klass);
     }
 
+
+    if (parent != null) {
+        klass.addMethods(
+        {
+            'super_init' : function () {
+                //if (this.initializing != null) {
+                    this.initializing = this.initializing.superclass;
+                    this.initializing.prototype.initialize.apply(this, arguments)
+               // }
+            }
+        });
+    }
+
     for (var i = 0, length = properties.length; i < length; i++)
       klass.addMethods(properties[i]);