JS backend: fixed the variable capturing in deeply nested functions which mixed with the object declaration.

(cherry picked from commit 41cb0ab)

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

@@ -39,4 +39,8 @@ public final class ClosureTest extends SingleFileTranslationTest {
     public void testLocalParameterInLocalNamedFunction() throws Exception {
         fooBoxTest();
     }
+
+    public void testObjectAsConstructorParameter() throws Exception {
+        fooBoxTest();
+    }
 }

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

@@ -133,40 +133,20 @@ public final class UsageTracker {
     }
 
     public void forEachCaptured(Consumer<CallableDescriptor> consumer) {
-        forEachCaptured(consumer, this, children == null ? null : new THashSet<CallableDescriptor>());
+        forEachCaptured(consumer, memberDescriptor, children == null ? null : new THashSet<CallableDescriptor>());
     }
 
-    private boolean isOneOfTheMyParentsIsAncestor(VariableDescriptor parameterDescriptor, UsageTracker requestor) {
-        if (requestor == this) {
-            return false;
-        }
-
-        FunctionDescriptor paramOwner = (FunctionDescriptor) parameterDescriptor.getContainingDeclaration();
-        UsageTracker p = parent;
-        do {
-            if (p.memberDescriptor == paramOwner) {
-                return true;
-            }
-        }
-        while ((p = p.parent) != null && p != requestor);
-        return false;
-    }
-
-    private void forEachCaptured(Consumer<CallableDescriptor> consumer, UsageTracker requestor, @Nullable THashSet<CallableDescriptor> visited) {
+    private void forEachCaptured(Consumer<CallableDescriptor> consumer, MemberDescriptor requestorDescriptor, @Nullable THashSet<CallableDescriptor> visited) {
         if (capturedVariables != null) {
-            for (CallableDescriptor variable : capturedVariables) {
-                if (variable instanceof VariableDescriptor && isOneOfTheMyParentsIsAncestor((VariableDescriptor) variable, requestor)) {
-                    continue;
-                }
-
-                if (visited == null || visited.add(variable)) {
-                    consumer.consume(variable);
+            for (CallableDescriptor callableDescriptor : capturedVariables) {
+                if (!isAncestor(requestorDescriptor, callableDescriptor) && (visited == null || visited.add(callableDescriptor))) {
+                    consumer.consume(callableDescriptor);
                 }
             }
         }
         if (children != null) {
             for (UsageTracker child : children) {
-                child.forEachCaptured(consumer, requestor, visited);
+                child.forEachCaptured(consumer, requestorDescriptor, visited);
             }
         }
     }

js/js.translator/testFiles/closure/cases/objectAsConstructorParameter.kt

@@ -0,0 +1,28 @@
+package foo
+
+fun getLastFocused(callback: (window: Any?)->Unit) {
+    callback(null)
+}
+
+abstract class TabService(val ctorParam: String) {
+    abstract fun query(callback: (tabs: String)->Unit)
+}
+
+abstract class PageManager(val tabService: TabService)
+
+class ChromePageManager(val expected: String) : PageManager(object : TabService(expected) {
+    override fun query(callback: (tabs: String)->Unit) {
+        getLastFocused {
+            callback(expected)
+        }
+    }
+})
+
+fun box(): Boolean {
+    var result = ""
+    val tabService = ChromePageManager("result").tabService
+    tabService.query {
+       result = it
+    }
+    return result == "result" && tabService.ctorParam == "result"
+}