diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index fb3e2a37c80..1397a2192d0 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <option name="DEFAULT_COMPILER" value="Eclipse" />
+    <option name="DEFAULT_COMPILER" value="Javac" />
     <resourceExtensions />
     <wildcardResourcePatterns>
       <entry name="?*.properties" />
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/ClosureCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/ClosureCodegen.java
index c38fa4541cf..9fdb7b1f309 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/ClosureCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/ClosureCodegen.java
@@ -224,7 +224,7 @@ public class ClosureCodegen extends ObjectOrClosureCodegen {
 
         int i = 0;
         if (captureThis) {
-            argTypes[i++] = Type.getObjectType(context.getThisDescriptor().getName());
+            argTypes[i++] = state.getTypeMapper().mapType(context.getThisDescriptor().getDefaultType());
         }
 
         if (captureReceiver != null) {
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
index 1167da9c208..e69555a882b 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java
@@ -608,17 +608,20 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> {
 
                 final Method cons = closure.getConstructor();
 
+                int k = 0;
                 if (closure.isCaptureThis()) {
+                    k++;
                     v.load(0, JetTypeMapper.TYPE_OBJECT);
                 }
 
                 if (closure.isCaptureReceiver() != null) {
+                    k++;
                     v.load(context.getContextDescriptor().getContainingDeclaration() instanceof NamespaceDescriptor ? 0: 1, closure.isCaptureReceiver());
                 }
 
                 for (int i = 0; i < closure.getArgs().size(); i++) {
                     StackValue arg = closure.getArgs().get(i);
-                    arg.put(cons.getArgumentTypes()[i], v);
+                    arg.put(cons.getArgumentTypes()[i+k], v);
                 }
 
                 v.invokespecial(closure.getClassname(), "<init>", cons.getDescriptor());
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/GenerationState.java b/compiler/backend/src/org/jetbrains/jet/codegen/GenerationState.java
index 52e37842318..56b432cf2c9 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/GenerationState.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/GenerationState.java
@@ -157,4 +157,18 @@ public class GenerationState {
         });
     }
 
+    public String createText() {
+        StringBuilder answer = new StringBuilder();
+
+        final ClassFileFactory factory = getFactory();
+        List<String> files = factory.files();
+        for (String file : files) {
+            if (!file.startsWith("std/")) {
+                answer.append("@").append(file).append('\n');
+                answer.append(factory.asText(file));
+            }
+        }
+
+        return answer.toString();
+    }
 }
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java b/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java
index 16a4a1b2430..16a49a0d746 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java
@@ -129,7 +129,7 @@ public class JetTypeMapper {
         return type;
     }
 
-    static Type correctElementType(Type type) {
+    public static Type correctElementType(Type type) {
         String internalName = type.getInternalName();
         assert internalName.charAt(0) == '[';
         return Type.getType(internalName.substring(1));
@@ -173,6 +173,11 @@ public class JetTypeMapper {
     
     public String getFQName(DeclarationDescriptor descriptor) {
         descriptor = descriptor.getOriginal();
+
+        if(descriptor instanceof FunctionDescriptor) {
+            return getFQName(descriptor.getContainingDeclaration());
+        }
+
         DeclarationDescriptor container = descriptor.getContainingDeclaration();
         String name = descriptor.getName();
         if(JetPsiUtil.NO_NAME_PROVIDED.equals(name)) {
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/ArrayGet.java b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/ArrayGet.java
new file mode 100644
index 00000000000..6099a85aa08
--- /dev/null
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/ArrayGet.java
@@ -0,0 +1,28 @@
+package org.jetbrains.jet.codegen.intrinsics;
+
+import com.intellij.psi.PsiElement;
+import org.jetbrains.jet.codegen.ExpressionCodegen;
+import org.jetbrains.jet.codegen.JetTypeMapper;
+import org.jetbrains.jet.codegen.StackValue;
+import org.jetbrains.jet.lang.psi.JetExpression;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.commons.InstructionAdapter;
+
+import java.util.List;
+
+/**
+ * @author alex.tkachman
+ */
+public class ArrayGet implements IntrinsicMethod {
+    @Override
+    public StackValue generate(ExpressionCodegen codegen, InstructionAdapter v, Type expectedType, PsiElement element, List<JetExpression> arguments, StackValue receiver) {
+        receiver.put(JetTypeMapper.TYPE_OBJECT, v);
+        Type type = JetTypeMapper.correctElementType(receiver.type);
+
+        codegen.gen(arguments.get(0), Type.INT_TYPE);
+
+        v.aload(type);
+
+        return StackValue.onStack(type);
+    }
+}
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/ArraySet.java b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/ArraySet.java
new file mode 100644
index 00000000000..08443a994f7
--- /dev/null
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/ArraySet.java
@@ -0,0 +1,30 @@
+package org.jetbrains.jet.codegen.intrinsics;
+
+import com.intellij.psi.PsiElement;
+import org.jetbrains.jet.codegen.CodegenUtil;
+import org.jetbrains.jet.codegen.ExpressionCodegen;
+import org.jetbrains.jet.codegen.JetTypeMapper;
+import org.jetbrains.jet.codegen.StackValue;
+import org.jetbrains.jet.lang.psi.JetExpression;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.commons.InstructionAdapter;
+
+import java.util.List;
+
+/**
+ * @author alex.tkachman
+ */
+public class ArraySet implements IntrinsicMethod {
+    @Override
+    public StackValue generate(ExpressionCodegen codegen, InstructionAdapter v, Type expectedType, PsiElement element, List<JetExpression> arguments, StackValue receiver) {
+        receiver.put(JetTypeMapper.TYPE_OBJECT, v);
+        Type type = JetTypeMapper.correctElementType(receiver.type);
+
+        codegen.gen(arguments.get(0), Type.INT_TYPE);
+        codegen.gen(arguments.get(1), type);
+
+        v.astore(type);
+
+        return StackValue.none();
+    }
+}
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java
index 66551a76349..a75db2d5a37 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/IntrinsicMethods.java
@@ -36,6 +36,8 @@ public class IntrinsicMethods {
     public static final IntrinsicMethod ARRAY_INDICES = new ArrayIndices();
     public static final Equals EQUALS = new Equals();
     public static final IteratorNext ITERATOR_NEXT = new IteratorNext();
+    public static final ArraySet ARRAY_SET = new ArraySet();
+    public static final ArrayGet ARRAY_GET = new ArrayGet();
 
     private final Project myProject;
     private final JetStandardLibrary myStdLib;
@@ -122,6 +124,26 @@ public class IntrinsicMethods {
         declareIntrinsicProperty("CharArray", "indices", ARRAY_INDICES);
         declareIntrinsicProperty("BooleanArray", "indices", ARRAY_INDICES);
 
+        declareIntrinsicFunction("Array", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("ByteArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("ShortArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("IntArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("LongArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("FloatArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("DoubleArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("CharArray", "set", 2, ARRAY_SET);
+        declareIntrinsicFunction("BooleanArray", "set", 2, ARRAY_SET);
+
+        declareIntrinsicFunction("Array", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("ByteArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("ShortArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("IntArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("LongArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("FloatArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("DoubleArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("CharArray", "get", 1, ARRAY_GET);
+        declareIntrinsicFunction("BooleanArray", "get", 1, ARRAY_GET);
+
         declareIterator(myStdLib.getArray());
         declareIterator(myStdLib.getByteArrayClass());
         declareIterator(myStdLib.getShortArrayClass());
diff --git a/compiler/backend/src/org/jetbrains/jet/compiler/CompileSession.java b/compiler/backend/src/org/jetbrains/jet/compiler/CompileSession.java
index 7f643b90d14..e90fda9eb8a 100644
--- a/compiler/backend/src/org/jetbrains/jet/compiler/CompileSession.java
+++ b/compiler/backend/src/org/jetbrains/jet/compiler/CompileSession.java
@@ -99,4 +99,9 @@ public class CompileSession {
         return generationState.getFactory();
     }
 
+    public String generateText() {
+        GenerationState generationState = new GenerationState(myEnvironment.getProject(), ClassBuilderFactory.TEXT);
+        generationState.compileCorrectNamespaces(myBindingContext, mySourceFileNamespaces);
+        return generationState.createText();
+    }
 }
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/JetSemanticServices.java b/compiler/frontend/src/org/jetbrains/jet/lang/JetSemanticServices.java
index 5a73728db37..36fadfc8f60 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/JetSemanticServices.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/JetSemanticServices.java
@@ -3,7 +3,7 @@ package org.jetbrains.jet.lang;
 import com.intellij.openapi.project.Project;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.resolve.BindingTrace;
-import org.jetbrains.jet.lang.resolve.ClassDescriptorResolver;
+import org.jetbrains.jet.lang.resolve.DescriptorResolver;
 import org.jetbrains.jet.lang.types.JetStandardLibrary;
 import org.jetbrains.jet.lang.types.JetTypeChecker;
 import org.jetbrains.jet.lang.types.expressions.ExpressionTypingServices;
@@ -34,8 +34,8 @@ public class JetSemanticServices {
     }
 
     @NotNull
-    public ClassDescriptorResolver getClassDescriptorResolver(BindingTrace trace) {
-        return new ClassDescriptorResolver(this, trace);
+    public DescriptorResolver getClassDescriptorResolver(BindingTrace trace) {
+        return new DescriptorResolver(this, trace);
     }
 
     @NotNull
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/CallableDescriptor.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/CallableDescriptor.java
index 4e78d2c81f5..afc9560badb 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/CallableDescriptor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/CallableDescriptor.java
@@ -1,6 +1,7 @@
 package org.jetbrains.jet.lang.descriptors;
 
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor;
 import org.jetbrains.jet.lang.types.JetType;
 import org.jetbrains.jet.lang.types.TypeSubstitutor;
@@ -24,6 +25,9 @@ public interface CallableDescriptor extends DeclarationDescriptor {
     @NotNull
     JetType getReturnType();
 
+    @Nullable
+    JetType getReturnTypeSafe();
+
     @NotNull
     @Override
     CallableDescriptor getOriginal();
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java
index ef3ab5aefa0..7f8a7943a88 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java
@@ -125,6 +125,12 @@ public class FunctionDescriptorImpl extends DeclarationDescriptorImpl implements
         return unsubstitutedReturnType;
     }
 
+    @Override
+    @Nullable
+    public JetType getReturnTypeSafe() {
+        return unsubstitutedReturnType;
+    }
+
     @NotNull
     @Override
     public FunctionDescriptor getOriginal() {
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/MutableClassDescriptor.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/MutableClassDescriptor.java
index 872cb0e9b97..669af46b9ae 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/MutableClassDescriptor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/MutableClassDescriptor.java
@@ -5,7 +5,9 @@ import com.google.common.collect.Sets;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.descriptors.annotations.AnnotationDescriptor;
-import org.jetbrains.jet.lang.resolve.*;
+import org.jetbrains.jet.lang.resolve.AbstractScopeAdapter;
+import org.jetbrains.jet.lang.resolve.BindingTrace;
+import org.jetbrains.jet.lang.resolve.TraceBasedRedeclarationHandler;
 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
 import org.jetbrains.jet.lang.resolve.scopes.SubstitutingScope;
 import org.jetbrains.jet.lang.resolve.scopes.WritableScope;
@@ -43,10 +45,6 @@ public class MutableClassDescriptor extends MutableDeclarationDescriptor impleme
     private JetType superclassType;
     private ClassReceiver implicitReceiver;
 
-//    public MutableClassDescriptor(@NotNull BindingTrace trace, @NotNull DeclarationDescriptor containingDeclaration, @NotNull JetScope outerScope) {
-//        this(trace, containingDeclaration, outerScope, ClassKind.CLASS);
-//    }
-
     public MutableClassDescriptor(@NotNull BindingTrace trace, @NotNull DeclarationDescriptor containingDeclaration, @NotNull JetScope outerScope, ClassKind kind) {
         super(containingDeclaration);
         TraceBasedRedeclarationHandler redeclarationHandler = new TraceBasedRedeclarationHandler(trace);
@@ -66,6 +64,23 @@ public class MutableClassDescriptor extends MutableDeclarationDescriptor impleme
         }
         assert classObjectDescriptor.getKind() == ClassKind.OBJECT;
         this.classObjectDescriptor = classObjectDescriptor;
+
+        // Members of the class object are accessible from the class
+        // The scope must be lazy, because classObjectDescriptor may not by fully built yet
+        scopeForMemberResolution.importScope(new AbstractScopeAdapter() {
+            @NotNull
+            @Override
+            protected JetScope getWorkerScope() {
+                return MutableClassDescriptor.this.classObjectDescriptor.getDefaultType().getMemberScope();
+            }
+
+            @NotNull
+            @Override
+            public ReceiverDescriptor getImplicitReceiver() {
+                return MutableClassDescriptor.this.classObjectDescriptor.getImplicitReceiver();
+            }
+        }
+        );
         return ClassObjectStatus.OK;
     }
 
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyDescriptor.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyDescriptor.java
index 69555990589..bc09461d530 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyDescriptor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyDescriptor.java
@@ -119,6 +119,11 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
         return getOutType();
     }
 
+    @Override
+    @Nullable
+    public JetType getReturnTypeSafe() {
+        return getOutType();
+    }
 
     public boolean isVar() {
         return isVar;
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyGetterDescriptor.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyGetterDescriptor.java
index 4181da25779..491a0afa50b 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyGetterDescriptor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyGetterDescriptor.java
@@ -40,6 +40,12 @@ public class PropertyGetterDescriptor extends PropertyAccessorDescriptor {
         return returnType;
     }
 
+    @Override
+    @Nullable
+    public JetType getReturnTypeSafe() {
+        return returnType;
+    }
+
     @Override
     public <R, D> R accept(DeclarationDescriptorVisitor<R, D> visitor, D data) {
         return visitor.visitPropertyGetterDescriptor(this, data);
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertySetterDescriptor.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertySetterDescriptor.java
index 7319cb5ce3b..cd1fc09caa0 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertySetterDescriptor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertySetterDescriptor.java
@@ -48,6 +48,11 @@ public class PropertySetterDescriptor extends PropertyAccessorDescriptor {
         return JetStandardClasses.getUnitType();
     }
 
+    @Override
+    public JetType getReturnTypeSafe() {
+        return getReturnType();
+    }
+
     @Override
     public <R, D> R accept(DeclarationDescriptorVisitor<R, D> visitor, D data) {
         return visitor.visitPropertySetterDescriptor(this, data);
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/VariableDescriptorImpl.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/VariableDescriptorImpl.java
index 6daefbce285..827fcbeab9a 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/VariableDescriptorImpl.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/VariableDescriptorImpl.java
@@ -89,4 +89,10 @@ public abstract class VariableDescriptorImpl extends DeclarationDescriptorImpl i
     public JetType getReturnType() {
         return getOutType();
     }
+
+    @Override
+    @Nullable
+    public JetType getReturnTypeSafe() {
+        return getOutType();
+    }
 }
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BodyResolver.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BodyResolver.java
index ef5e309947f..dd45fdd7af9 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BodyResolver.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BodyResolver.java
@@ -82,7 +82,7 @@ public class BodyResolver {
         resolveSecondaryConstructorBodies();
         resolveFunctionBodies();
 
-        computeDeferredTypes();        
+        computeDeferredTypes();
     }
     
     private void resolveDelegationSpecifierLists() {
@@ -357,8 +357,8 @@ public class BodyResolver {
         }
         JetExpression bodyExpression = declaration.getBodyExpression();
         if (bodyExpression != null) {
-            //context.getClassDescriptorResolver().computeFlowData(declaration, bodyExpression);
-            //JetFlowInformationProvider flowInformationProvider = context.getClassDescriptorResolver().computeFlowData(declaration, bodyExpression);
+            //context.getDescriptorResolver().computeFlowData(declaration, bodyExpression);
+            //JetFlowInformationProvider flowInformationProvider = context.getDescriptorResolver().computeFlowData(declaration, bodyExpression);
             ExpressionTypingServices typeInferrer = context.getSemanticServices().getTypeInferrerServices(traceForConstructors);
 
             typeInferrer.checkFunctionReturnType(functionInnerScope, declaration, JetStandardClasses.getUnitType());
@@ -482,7 +482,7 @@ public class BodyResolver {
     }
 
     private void resolvePropertyInitializer(JetProperty property, PropertyDescriptor propertyDescriptor, JetExpression initializer, JetScope scope) {
-        //JetFlowInformationProvider flowInformationProvider = context.getClassDescriptorResolver().computeFlowData(property, initializer); // TODO : flow JET-15
+        //JetFlowInformationProvider flowInformationProvider = context.getDescriptorResolver().computeFlowData(property, initializer); // TODO : flow JET-15
         ExpressionTypingServices typeInferrer = context.getSemanticServices().getTypeInferrerServices(traceForConstructors);
         JetType expectedTypeForInitializer = property.getPropertyTypeRef() != null ? propertyDescriptor.getOutType() : NO_EXPECTED_TYPE;
         JetType type = typeInferrer.getType(getPropertyDeclarationInnerScope(scope, propertyDescriptor), initializer, expectedTypeForInitializer);
@@ -501,6 +501,18 @@ public class BodyResolver {
         for (Map.Entry<JetNamedFunction, FunctionDescriptorImpl> entry : this.context.getFunctions().entrySet()) {
             JetNamedFunction declaration = entry.getKey();
             FunctionDescriptor descriptor = entry.getValue();
+            
+            if (descriptor.getReturnType() instanceof DeferredType) {
+                // handle type inference loop: function body contains a closure that calls that function
+                //
+                // fun f() = { f() }
+                //
+                // function type resolution must be started before function body resolution
+                //
+
+                DeferredType returnType = (DeferredType) descriptor.getReturnType();
+                returnType.getActualType();
+            }
 
             JetScope declaringScope = this.context.getDeclaringScopes().get(declaration);
             assert declaringScope != null;
@@ -520,7 +532,7 @@ public class BodyResolver {
 
         JetExpression bodyExpression = function.getBodyExpression();
         if (bodyExpression != null) {
-            //JetFlowInformationProvider flowInformationProvider = context.getClassDescriptorResolver().computeFlowData(function.asElement(), bodyExpression);
+            //JetFlowInformationProvider flowInformationProvider = context.getDescriptorResolver().computeFlowData(function.asElement(), bodyExpression);
             ExpressionTypingServices typeInferrer = context.getSemanticServices().getTypeInferrerServices(trace);
 
             typeInferrer.checkFunctionReturnType(declaringScope, function, functionDescriptor);
@@ -545,7 +557,8 @@ public class BodyResolver {
     private void computeDeferredTypes() {
         Collection<Box<DeferredType>> deferredTypes = context.getTrace().getKeys(DEFERRED_TYPE);
         if (deferredTypes != null) {
-            final Queue<DeferredType> queue = new Queue<DeferredType>(deferredTypes.size());
+            // +1 is a work around agains new Queue(0).addLast(...) bug // stepan.koltsov@ 2011-11-21
+            final Queue<DeferredType> queue = new Queue<DeferredType>(deferredTypes.size() + 1);
             context.getTrace().addHandler(DEFERRED_TYPE, new ObservableBindingTrace.RecordHandler<Box<DeferredType>, Boolean>() {
                 @Override
                 public void handleRecord(WritableSlice<Box<DeferredType>, Boolean> deferredTypeKeyDeferredTypeWritableSlice, Box<DeferredType> key, Boolean value) {
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationResolver.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationResolver.java
index 84f80ad1328..8c645412d1f 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationResolver.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationResolver.java
@@ -94,7 +94,7 @@ public class DeclarationResolver {
             declaration.accept(new JetVisitorVoid() {
                 @Override
                 public void visitNamedFunction(JetNamedFunction function) {
-                    FunctionDescriptorImpl functionDescriptor = context.getClassDescriptorResolver().resolveFunctionDescriptor(namespaceLike, scope, function);
+                    FunctionDescriptorImpl functionDescriptor = context.getDescriptorResolver().resolveFunctionDescriptor(namespaceLike, scope, function);
                     namespaceLike.addFunctionDescriptor(functionDescriptor);
                     context.getFunctions().put(function, functionDescriptor);
                     context.getDeclaringScopes().put(function, scope);
@@ -102,7 +102,7 @@ public class DeclarationResolver {
 
                 @Override
                 public void visitProperty(JetProperty property) {
-                    PropertyDescriptor propertyDescriptor = context.getClassDescriptorResolver().resolvePropertyDescriptor(namespaceLike, scope, property);
+                    PropertyDescriptor propertyDescriptor = context.getDescriptorResolver().resolvePropertyDescriptor(namespaceLike, scope, property);
                     namespaceLike.addPropertyDescriptor(propertyDescriptor);
                     context.getProperties().put(property, propertyDescriptor);
                     context.getDeclaringScopes().put(property, scope);
@@ -110,7 +110,7 @@ public class DeclarationResolver {
 
                 @Override
                 public void visitObjectDeclaration(JetObjectDeclaration declaration) {
-                    PropertyDescriptor propertyDescriptor = context.getClassDescriptorResolver().resolveObjectDeclarationAsPropertyDescriptor(namespaceLike, declaration, context.getObjects().get(declaration));
+                    PropertyDescriptor propertyDescriptor = context.getDescriptorResolver().resolveObjectDeclarationAsPropertyDescriptor(namespaceLike, declaration, context.getObjects().get(declaration));
                     namespaceLike.addPropertyDescriptor(propertyDescriptor);
                 }
 
@@ -119,7 +119,7 @@ public class DeclarationResolver {
                     if (enumEntry.getPrimaryConstructorParameterList() == null) {
                         MutableClassDescriptor classObjectDescriptor = ((MutableClassDescriptor) namespaceLike).getClassObjectDescriptor();
                         assert classObjectDescriptor != null;
-                        PropertyDescriptor propertyDescriptor = context.getClassDescriptorResolver().resolveObjectDeclarationAsPropertyDescriptor(classObjectDescriptor, enumEntry, context.getClasses().get(enumEntry));
+                        PropertyDescriptor propertyDescriptor = context.getDescriptorResolver().resolveObjectDeclarationAsPropertyDescriptor(classObjectDescriptor, enumEntry, context.getClasses().get(enumEntry));
                         classObjectDescriptor.addPropertyDescriptor(propertyDescriptor);
                     }
                 }
@@ -137,10 +137,10 @@ public class DeclarationResolver {
 
         // TODO : not all the parameters are real properties
         JetScope memberScope = classDescriptor.getScopeForSupertypeResolution();
-        ConstructorDescriptor constructorDescriptor = context.getClassDescriptorResolver().resolvePrimaryConstructorDescriptor(memberScope, classDescriptor, klass);
+        ConstructorDescriptor constructorDescriptor = context.getDescriptorResolver().resolvePrimaryConstructorDescriptor(memberScope, classDescriptor, klass);
         for (JetParameter parameter : klass.getPrimaryConstructorParameters()) {
             if (parameter.getValOrVarNode() != null) {
-                PropertyDescriptor propertyDescriptor = context.getClassDescriptorResolver().resolvePrimaryConstructorParameterToAProperty(
+                PropertyDescriptor propertyDescriptor = context.getDescriptorResolver().resolvePrimaryConstructorParameterToAProperty(
                         classDescriptor,
                         memberScope,
                         parameter
@@ -159,7 +159,7 @@ public class DeclarationResolver {
 //            context.getTrace().getErrorHandler().genericError(constructor.getNameNode(), "A trait may not have a constructor");
             context.getTrace().report(CONSTRUCTOR_IN_TRAIT.on(constructor.getNameNode()));
         }
-        ConstructorDescriptor constructorDescriptor = context.getClassDescriptorResolver().resolveSecondaryConstructorDescriptor(
+        ConstructorDescriptor constructorDescriptor = context.getDescriptorResolver().resolveSecondaryConstructorDescriptor(
                 classDescriptor.getScopeForMemberResolution(),
                 classDescriptor,
                 constructor);
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationsChecker.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationsChecker.java
index 8a7beb5a7f8..34e55786dbc 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationsChecker.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DeclarationsChecker.java
@@ -149,7 +149,7 @@ public class DeclarationsChecker {
         PsiElement nameIdentifier = member.getNameIdentifier();
         boolean hasDeferredType;
         if (member instanceof JetProperty) {
-            hasDeferredType = ((JetProperty) member).getPropertyTypeRef() == null && ClassDescriptorResolver.hasBody((JetProperty) member);
+            hasDeferredType = ((JetProperty) member).getPropertyTypeRef() == null && DescriptorResolver.hasBody((JetProperty) member);
         }
         else {
             assert member instanceof JetFunction;
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/ClassDescriptorResolver.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DescriptorResolver.java
similarity index 97%
rename from compiler/frontend/src/org/jetbrains/jet/lang/resolve/ClassDescriptorResolver.java
rename to compiler/frontend/src/org/jetbrains/jet/lang/resolve/DescriptorResolver.java
index 3de809f0f8b..8be709898fd 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/ClassDescriptorResolver.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/DescriptorResolver.java
@@ -27,14 +27,14 @@ import static org.jetbrains.jet.lang.diagnostics.Errors.*;
 /**
  * @author abreslav
  */
-public class ClassDescriptorResolver {
+public class DescriptorResolver {
     private final JetSemanticServices semanticServices;
     private final TypeResolver typeResolver;
     private final TypeResolver typeResolverNotCheckingBounds;
     private final BindingTrace trace;
     private final AnnotationResolver annotationResolver;
 
-    public ClassDescriptorResolver(JetSemanticServices semanticServices, BindingTrace trace) {
+    public DescriptorResolver(JetSemanticServices semanticServices, BindingTrace trace) {
         this.semanticServices = semanticServices;
         this.typeResolver = new TypeResolver(semanticServices, trace, true);
         this.typeResolverNotCheckingBounds = new TypeResolver(semanticServices, trace, false);
@@ -682,10 +682,7 @@ public class ClassDescriptorResolver {
             trace.record(BindingContext.PROPERTY_ACCESSOR, setter, setterDescriptor);
         }
         else if (property.isVar()) {
-            setterDescriptor = new PropertySetterDescriptor(
-                    propertyDescriptor.getModality(),
-                    propertyDescriptor.getVisibility(),
-                    propertyDescriptor, Collections.<AnnotationDescriptor>emptyList(), false, true);
+            setterDescriptor = createDefaultSetter(propertyDescriptor);
         }
 
         if (! property.isVar()) {
@@ -697,6 +694,15 @@ public class ClassDescriptorResolver {
         return setterDescriptor;
     }
 
+    private PropertySetterDescriptor createDefaultSetter(PropertyDescriptor propertyDescriptor) {
+        PropertySetterDescriptor setterDescriptor;
+        setterDescriptor = new PropertySetterDescriptor(
+                propertyDescriptor.getModality(),
+                propertyDescriptor.getVisibility(),
+                propertyDescriptor, Collections.<AnnotationDescriptor>emptyList(), false, true);
+        return setterDescriptor;
+    }
+
     @Nullable
     private PropertyGetterDescriptor resolvePropertyGetterDescriptor(@NotNull JetScope scope, @NotNull JetProperty property, @NotNull PropertyDescriptor propertyDescriptor) {
         PropertyGetterDescriptor getterDescriptor;
@@ -722,14 +728,20 @@ public class ClassDescriptorResolver {
             trace.record(BindingContext.PROPERTY_ACCESSOR, getter, getterDescriptor);
         }
         else {
-            getterDescriptor = new PropertyGetterDescriptor(
-                    propertyDescriptor, Collections.<AnnotationDescriptor>emptyList(), propertyDescriptor.getModality(),
-                    propertyDescriptor.getVisibility(),
-                    propertyDescriptor.getOutType(), false, true);
+            getterDescriptor = createDefaultGetter(propertyDescriptor);
         }
         return getterDescriptor;
     }
 
+    private PropertyGetterDescriptor createDefaultGetter(PropertyDescriptor propertyDescriptor) {
+        PropertyGetterDescriptor getterDescriptor;
+        getterDescriptor = new PropertyGetterDescriptor(
+                propertyDescriptor, Collections.<AnnotationDescriptor>emptyList(), propertyDescriptor.getModality(),
+                propertyDescriptor.getVisibility(),
+                propertyDescriptor.getOutType(), false, true);
+        return getterDescriptor;
+    }
+
     @NotNull
     public ConstructorDescriptorImpl resolveSecondaryConstructorDescriptor(@NotNull JetScope scope, @NotNull ClassDescriptor classDescriptor, @NotNull JetSecondaryConstructor constructor) {
         return createConstructorDescriptor(scope, classDescriptor, false, constructor.getModifierList(), constructor, classDescriptor.getTypeConstructor().getParameters(), constructor.getValueParameters());
@@ -800,7 +812,7 @@ public class ClassDescriptorResolver {
                 name == null ? "<no name>" : name,
                 isMutable ? type : null,
                 type);
-        propertyDescriptor.initialize(Collections.<TypeParameterDescriptor>emptyList(), null, null);
+        propertyDescriptor.initialize(Collections.<TypeParameterDescriptor>emptyList(), createDefaultGetter(propertyDescriptor), createDefaultSetter(propertyDescriptor));
         trace.record(BindingContext.PRIMARY_CONSTRUCTOR_PARAMETER, parameter, propertyDescriptor);
         return propertyDescriptor;
     }
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TopDownAnalysisContext.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TopDownAnalysisContext.java
index f03bfdbd5c7..96483be60c3 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TopDownAnalysisContext.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TopDownAnalysisContext.java
@@ -23,7 +23,7 @@ import java.util.Set;
 
     private final ObservableBindingTrace trace;
     private final JetSemanticServices semanticServices;
-    private final ClassDescriptorResolver classDescriptorResolver;
+    private final DescriptorResolver descriptorResolver;
 
     private final Map<JetClass, MutableClassDescriptor> classes = Maps.newLinkedHashMap();
     private final Map<JetObjectDeclaration, MutableClassDescriptor> objects = Maps.newLinkedHashMap();
@@ -46,7 +46,7 @@ import java.util.Set;
     public TopDownAnalysisContext(JetSemanticServices semanticServices, BindingTrace trace, Predicate<PsiFile> analyzeCompletely) {
         this.trace = new ObservableBindingTrace(trace);
         this.semanticServices = semanticServices;
-        this.classDescriptorResolver = semanticServices.getClassDescriptorResolver(trace);
+        this.descriptorResolver = semanticServices.getClassDescriptorResolver(trace);
         this.analyzeCompletely = analyzeCompletely;
     }
 
@@ -93,8 +93,8 @@ import java.util.Set;
         return semanticServices;
     }
 
-    public ClassDescriptorResolver getClassDescriptorResolver() {
-        return classDescriptorResolver;
+    public DescriptorResolver getDescriptorResolver() {
+        return descriptorResolver;
     }
 
     public Map<JetClass, MutableClassDescriptor> getClasses() {
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeHierarchyResolver.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeHierarchyResolver.java
index 7cc40628441..2585e655d35 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeHierarchyResolver.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeHierarchyResolver.java
@@ -101,7 +101,7 @@ public class TypeHierarchyResolver {
                         MutableClassDescriptor classObjectDescriptor = new MutableClassDescriptor(context.getTrace(), mutableClassDescriptor, outerScope, ClassKind.OBJECT);
                         classObjectDescriptor.setName("class-object-for-" + klass.getName());
                         classObjectDescriptor.setModality(Modality.FINAL);
-                        classObjectDescriptor.setVisibility(ClassDescriptorResolver.resolveVisibilityFromModifiers(klass.getModifierList()));
+                        classObjectDescriptor.setVisibility(DescriptorResolver.resolveVisibilityFromModifiers(klass.getModifierList()));
                         classObjectDescriptor.createTypeConstructor();
                         createPrimaryConstructorForObject(null, classObjectDescriptor);
                         mutableClassDescriptor.setClassObjectDescriptor(classObjectDescriptor);
@@ -290,14 +290,14 @@ public class TypeHierarchyResolver {
         for (Map.Entry<JetClass, MutableClassDescriptor> entry : context.getClasses().entrySet()) {
             JetClass jetClass = entry.getKey();
             MutableClassDescriptor descriptor = entry.getValue();
-            context.getClassDescriptorResolver().resolveMutableClassDescriptor(jetClass, descriptor);
+            context.getDescriptorResolver().resolveMutableClassDescriptor(jetClass, descriptor);
             descriptor.createTypeConstructor();
         }
         for (Map.Entry<JetObjectDeclaration, MutableClassDescriptor> entry : context.getObjects().entrySet()) {
             JetObjectDeclaration objectDeclaration = entry.getKey();
             MutableClassDescriptor descriptor = entry.getValue();
             descriptor.setModality(Modality.FINAL);
-            descriptor.setVisibility(ClassDescriptorResolver.resolveVisibilityFromModifiers(objectDeclaration.getModifierList()));
+            descriptor.setVisibility(DescriptorResolver.resolveVisibilityFromModifiers(objectDeclaration.getModifierList()));
             descriptor.createTypeConstructor();
         }
     }
@@ -306,13 +306,13 @@ public class TypeHierarchyResolver {
         for (Map.Entry<JetClass, MutableClassDescriptor> entry : context.getClasses().entrySet()) {
             JetClass jetClass = entry.getKey();
             MutableClassDescriptor descriptor = entry.getValue();
-            context.getClassDescriptorResolver().resolveGenericBounds(jetClass, descriptor.getScopeForSupertypeResolution(), descriptor.getTypeConstructor().getParameters());
-            context.getClassDescriptorResolver().resolveSupertypes(jetClass, descriptor);
+            context.getDescriptorResolver().resolveGenericBounds(jetClass, descriptor.getScopeForSupertypeResolution(), descriptor.getTypeConstructor().getParameters());
+            context.getDescriptorResolver().resolveSupertypes(jetClass, descriptor);
         }
         for (Map.Entry<JetObjectDeclaration, MutableClassDescriptor> entry : context.getObjects().entrySet()) {
             JetClassOrObject jetClass = entry.getKey();
             MutableClassDescriptor descriptor = entry.getValue();
-            context.getClassDescriptorResolver().resolveSupertypes(jetClass, descriptor);
+            context.getDescriptorResolver().resolveSupertypes(jetClass, descriptor);
         }
     }
 
@@ -517,7 +517,7 @@ public class TypeHierarchyResolver {
                 if (typeReference != null) {
                     JetType type = context.getTrace().getBindingContext().get(TYPE, typeReference);
                     if (type != null) {
-                        context.getClassDescriptorResolver().checkBounds(typeReference, type);
+                        context.getDescriptorResolver().checkBounds(typeReference, type);
                     }
                 }
             }
@@ -527,7 +527,7 @@ public class TypeHierarchyResolver {
                 if (extendsBound != null) {
                     JetType type = context.getTrace().getBindingContext().get(TYPE, extendsBound);
                     if (type != null) {
-                        context.getClassDescriptorResolver().checkBounds(extendsBound, type);
+                        context.getDescriptorResolver().checkBounds(extendsBound, type);
                     }
                 }
             }
@@ -537,7 +537,7 @@ public class TypeHierarchyResolver {
                 if (extendsBound != null) {
                     JetType type = context.getTrace().getBindingContext().get(TYPE, extendsBound);
                     if (type != null) {
-                        context.getClassDescriptorResolver().checkBounds(extendsBound, type);
+                        context.getDescriptorResolver().checkBounds(extendsBound, type);
                     }
                 }
             }
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/TaskPrioritizer.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/TaskPrioritizer.java
index 2edca62eb75..872781fb28b 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/TaskPrioritizer.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/TaskPrioritizer.java
@@ -98,8 +98,16 @@ import static org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor
         }
         doComputeTasks(scope, explicitReceiver, call, name, result, AutoCastService.NO_AUTO_CASTS);
 
-        ReceiverDescriptor receiverToCast = explicitReceiver.exists() ? explicitReceiver : scope.getImplicitReceiver();
-        if (receiverToCast.exists()) {
+        List<ReceiverDescriptor> receivers;
+        if (explicitReceiver.exists()) {
+            receivers = Collections.singletonList(explicitReceiver);
+        }
+        else {
+            receivers = Lists.newArrayList();
+            scope.getImplicitReceiversHierarchy(receivers);
+        }
+        for (ReceiverDescriptor receiverToCast : receivers) {
+            assert receiverToCast.exists();
             doComputeTasks(scope, receiverToCast, call, name, result, new AutoCastServiceImpl(dataFlowInfo, bindingContext));
         }
         return result;
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeImpl.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeImpl.java
index 81ee15a1873..37de89a17ca 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeImpl.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeImpl.java
@@ -232,15 +232,6 @@ public class WritableScopeImpl extends WritableScopeWithImports {
         return super.getClassifier(name);
     }
 
-    @NotNull
-    @Override
-    public ReceiverDescriptor getImplicitReceiver() {
-        if (implicitReceiver == null) {
-            return super.getImplicitReceiver();
-        }
-        return implicitReceiver;
-    }
-
     @Override
     public void addNamespace(@NotNull NamespaceDescriptor namespaceDescriptor) {
         Map<String, DeclarationDescriptor> variableClassOrNamespaceDescriptors = getVariableClassOrNamespaceDescriptors();
@@ -272,6 +263,15 @@ public class WritableScopeImpl extends WritableScopeWithImports {
         return super.getNamespace(name);
     }
 
+    @NotNull
+    @Override
+    public ReceiverDescriptor getImplicitReceiver() {
+        if (implicitReceiver == null) {
+            return super.getImplicitReceiver();
+        }
+        return implicitReceiver;
+    }
+
     @Override
     public void setImplicitReceiver(@NotNull ReceiverDescriptor implicitReceiver) {
         if (this.implicitReceiver != null) {
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeWithImports.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeWithImports.java
index ba957519c14..97cdb1df602 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeWithImports.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeWithImports.java
@@ -7,6 +7,7 @@ import org.jetbrains.jet.lang.descriptors.ClassifierDescriptor;
 import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
 import org.jetbrains.jet.lang.descriptors.NamespaceDescriptor;
 import org.jetbrains.jet.lang.descriptors.VariableDescriptor;
+import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -50,6 +51,20 @@ public abstract class WritableScopeWithImports extends JetScopeAdapter implement
         currentIndividualImportScope = null;
     }
 
+    @Override
+    public void getImplicitReceiversHierarchy(@NotNull List<ReceiverDescriptor> result) {
+        super.getImplicitReceiversHierarchy(result);
+        // Imported scopes come with their receivers
+        // Example: class member resolution scope imports a scope of it's class object
+        //          members of the class object must be able to find it as an implicit receiver
+        for (JetScope scope : getImports()) {
+            ReceiverDescriptor definedReceiver = scope.getImplicitReceiver();
+            if (definedReceiver.exists()) {
+                result.add(0, definedReceiver);
+            }
+        }
+    }
+
     @Override
     public VariableDescriptor getVariable(@NotNull String name) {
         // Meaningful lookup goes here
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ClosureExpressionsTypingVisitor.java b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ClosureExpressionsTypingVisitor.java
index 41f0705f6aa..24fb25be067 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ClosureExpressionsTypingVisitor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ClosureExpressionsTypingVisitor.java
@@ -111,13 +111,6 @@ public class ClosureExpressionsTypingVisitor extends ExpressionTypingVisitor {
     private FunctionDescriptorImpl createFunctionDescriptor(JetFunctionLiteralExpression expression, ExpressionTypingContext context, boolean functionTypeExpected) {
         JetFunctionLiteral functionLiteral = expression.getFunctionLiteral();
         JetTypeReference receiverTypeRef = functionLiteral.getReceiverTypeRef();
-        final JetType receiverType;
-        if (receiverTypeRef != null) {
-            receiverType = context.getTypeResolver().resolveType(context.scope, receiverTypeRef);
-        } else {
-            ReceiverDescriptor implicitReceiver = context.scope.getImplicitReceiver();
-            receiverType = implicitReceiver.exists() ? implicitReceiver.getType() : null;
-        }
         FunctionDescriptorImpl functionDescriptor = new FunctionDescriptorImpl(
                 context.scope.getContainingDeclaration(), Collections.<AnnotationDescriptor>emptyList(), "<anonymous>");
 
@@ -133,7 +126,7 @@ public class ClosureExpressionsTypingVisitor extends ExpressionTypingVisitor {
             }
         }
         else {
-            effectiveReceiverType = receiverType;
+            effectiveReceiverType = context.getTypeResolver().resolveType(context.scope, receiverTypeRef);
         }
         functionDescriptor.initialize(effectiveReceiverType, NO_RECEIVER, Collections.<TypeParameterDescriptor>emptyList(), valueParameterDescriptors, null, Modality.FINAL, Visibility.LOCAL);
         context.trace.record(BindingContext.FUNCTION, expression, functionDescriptor);
@@ -175,7 +168,7 @@ public class ClosureExpressionsTypingVisitor extends ExpressionTypingVisitor {
                         type = ErrorUtils.createErrorType("Cannot be inferred");
                     }
                 }
-                ValueParameterDescriptor valueParameterDescriptor = context.getClassDescriptorResolver().resolveValueParameterDescriptor(functionDescriptor, declaredParameter, i, type);
+                ValueParameterDescriptor valueParameterDescriptor = context.getDescriptorResolver().resolveValueParameterDescriptor(functionDescriptor, declaredParameter, i, type);
                 valueParameterDescriptors.add(valueParameterDescriptor);
             }
         }
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ControlStructureTypingVisitor.java b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ControlStructureTypingVisitor.java
index e0e1a312e70..d260b7ef9e3 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ControlStructureTypingVisitor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ControlStructureTypingVisitor.java
@@ -197,7 +197,7 @@ public class ControlStructureTypingVisitor extends ExpressionTypingVisitor {
             JetTypeReference typeReference = loopParameter.getTypeReference();
             VariableDescriptor variableDescriptor;
             if (typeReference != null) {
-                variableDescriptor = context.getClassDescriptorResolver().resolveLocalVariableDescriptor(context.scope.getContainingDeclaration(), context.scope, loopParameter);
+                variableDescriptor = context.getDescriptorResolver().resolveLocalVariableDescriptor(context.scope.getContainingDeclaration(), context.scope, loopParameter);
                 JetType actualParameterType = variableDescriptor.getOutType();
                 if (expectedParameterType != null &&
                         actualParameterType != null &&
@@ -209,7 +209,7 @@ public class ControlStructureTypingVisitor extends ExpressionTypingVisitor {
                 if (expectedParameterType == null) {
                     expectedParameterType = ErrorUtils.createErrorType("Error");
                 }
-                variableDescriptor = context.getClassDescriptorResolver().resolveLocalVariableDescriptor(context.scope.getContainingDeclaration(), loopParameter, expectedParameterType);
+                variableDescriptor = context.getDescriptorResolver().resolveLocalVariableDescriptor(context.scope.getContainingDeclaration(), loopParameter, expectedParameterType);
             }
             loopScope.addVariableDescriptor(variableDescriptor);
         }
@@ -320,7 +320,7 @@ public class ControlStructureTypingVisitor extends ExpressionTypingVisitor {
             JetParameter catchParameter = catchClause.getCatchParameter();
             JetExpression catchBody = catchClause.getCatchBody();
             if (catchParameter != null) {
-                VariableDescriptor variableDescriptor = context.getClassDescriptorResolver().resolveLocalVariableDescriptor(context.scope.getContainingDeclaration(), context.scope, catchParameter);
+                VariableDescriptor variableDescriptor = context.getDescriptorResolver().resolveLocalVariableDescriptor(context.scope.getContainingDeclaration(), context.scope, catchParameter);
                 if (catchBody != null) {
                     WritableScope catchScope = newWritableScopeImpl(context).setDebugName("Catch scope");
                     catchScope.addVariableDescriptor(variableDescriptor);
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingContext.java b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingContext.java
index f81094254b2..9dcd5d3d314 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingContext.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingContext.java
@@ -8,7 +8,7 @@ import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
 import org.jetbrains.jet.lang.descriptors.VariableDescriptor;
 import org.jetbrains.jet.lang.psi.*;
 import org.jetbrains.jet.lang.resolve.BindingTrace;
-import org.jetbrains.jet.lang.resolve.ClassDescriptorResolver;
+import org.jetbrains.jet.lang.resolve.DescriptorResolver;
 import org.jetbrains.jet.lang.resolve.TypeResolver;
 import org.jetbrains.jet.lang.resolve.calls.CallMaker;
 import org.jetbrains.jet.lang.resolve.calls.CallResolver;
@@ -71,7 +71,7 @@ import java.util.Map;
 
     private CallResolver callResolver;
     private TypeResolver typeResolver;
-    private ClassDescriptorResolver classDescriptorResolver;
+    private DescriptorResolver descriptorResolver;
     private ExpressionTypingServices services;
     private CompileTimeConstantResolver compileTimeConstantResolver;
 
@@ -156,11 +156,11 @@ import java.util.Map;
         return typeResolver;
     }
 
-    public ClassDescriptorResolver getClassDescriptorResolver() {
-        if (classDescriptorResolver == null) {
-            classDescriptorResolver = semanticServices.getClassDescriptorResolver(trace);
+    public DescriptorResolver getDescriptorResolver() {
+        if (descriptorResolver == null) {
+            descriptorResolver = semanticServices.getClassDescriptorResolver(trace);
         }
-        return classDescriptorResolver;
+        return descriptorResolver;
     }
 
     public CompileTimeConstantResolver getCompileTimeConstantResolver() {
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingVisitorForStatements.java b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingVisitorForStatements.java
index 718f668f1fe..68704d336ee 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingVisitorForStatements.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/ExpressionTypingVisitorForStatements.java
@@ -59,7 +59,7 @@ public class ExpressionTypingVisitorForStatements extends BasicExpressionTypingV
         TopDownAnalyzer.processObject(context.semanticServices, context.trace, scope, scope.getContainingDeclaration(), declaration);
         ClassDescriptor classDescriptor = context.trace.getBindingContext().get(BindingContext.CLASS, declaration);
         if (classDescriptor != null) {
-            PropertyDescriptor propertyDescriptor = context.getClassDescriptorResolver().resolveObjectDeclarationAsPropertyDescriptor(scope.getContainingDeclaration(), declaration, classDescriptor);
+            PropertyDescriptor propertyDescriptor = context.getDescriptorResolver().resolveObjectDeclarationAsPropertyDescriptor(scope.getContainingDeclaration(), declaration, classDescriptor);
             scope.addVariableDescriptor(propertyDescriptor);
         }
         return checkExpectedType(declaration, context);
@@ -82,7 +82,7 @@ public class ExpressionTypingVisitorForStatements extends BasicExpressionTypingV
             context.trace.report(LOCAL_VARIABLE_WITH_SETTER.on(setter));
         }
 
-        VariableDescriptor propertyDescriptor = context.getClassDescriptorResolver().resolveLocalVariableDescriptor(scope.getContainingDeclaration(), scope, property);
+        VariableDescriptor propertyDescriptor = context.getDescriptorResolver().resolveLocalVariableDescriptor(scope.getContainingDeclaration(), scope, property);
         JetExpression initializer = property.getInitializer();
         if (property.getPropertyTypeRef() != null && initializer != null) {
             JetType outType = propertyDescriptor.getOutType();
@@ -95,7 +95,7 @@ public class ExpressionTypingVisitorForStatements extends BasicExpressionTypingV
 
     @Override
     public JetType visitNamedFunction(JetNamedFunction function, ExpressionTypingContext context) {
-        FunctionDescriptorImpl functionDescriptor = context.getClassDescriptorResolver().resolveFunctionDescriptor(scope.getContainingDeclaration(), scope, function);
+        FunctionDescriptorImpl functionDescriptor = context.getDescriptorResolver().resolveFunctionDescriptor(scope.getContainingDeclaration(), scope, function);
         scope.addFunctionDescriptor(functionDescriptor);
         context.getServices().checkFunctionReturnType(context.scope, function, functionDescriptor, context.dataFlowInfo);
         return checkExpectedType(function, context);
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java
index 6b8b8d0630c..943343f4d70 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/PatternMatchingTypingVisitor.java
@@ -226,7 +226,7 @@ public class PatternMatchingTypingVisitor extends ExpressionTypingVisitor {
                 JetProperty variableDeclaration = pattern.getVariableDeclaration();
                 JetTypeReference propertyTypeRef = variableDeclaration.getPropertyTypeRef();
                 JetType type = propertyTypeRef == null ? subjectType : context.getTypeResolver().resolveType(context.scope, propertyTypeRef);
-                VariableDescriptor variableDescriptor = context.getClassDescriptorResolver().resolveLocalVariableDescriptorWithType(context.scope.getContainingDeclaration(), variableDeclaration, type);
+                VariableDescriptor variableDescriptor = context.getDescriptorResolver().resolveLocalVariableDescriptorWithType(context.scope.getContainingDeclaration(), variableDeclaration, type);
                 scopeToExtend.addVariableDescriptor(variableDescriptor);
                 if (propertyTypeRef != null) {
                     if (!context.semanticServices.getTypeChecker().isSubtypeOf(subjectType, type)) {
diff --git a/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java b/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java
index b744988a594..8b2ccbd024a 100644
--- a/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java
+++ b/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java
@@ -73,7 +73,11 @@ public class DescriptorRenderer implements Renderer {
     }
 
     public String renderType(JetType type) {
-        return escape(type.toString());
+        if (type == null) {
+            return escape("<?>");
+        } else {
+            return escape(type.toString());
+        }
     }
 
     protected String escape(String s) {
@@ -222,7 +226,7 @@ public class DescriptorRenderer implements Renderer {
 
             renderName(descriptor, builder);
             renderValueParameters(descriptor, builder);
-            builder.append(" : ").append(escape(renderType(descriptor.getReturnType())));
+            builder.append(" : ").append(escape(renderType(descriptor.getReturnTypeSafe())));
             return super.visitFunctionDescriptor(descriptor, builder);
         }
 
diff --git a/compiler/testData/checkerWithErrorTypes/full/RecursiveTypeInference.jet b/compiler/testData/checkerWithErrorTypes/full/RecursiveTypeInference.jet
index 11eb880a193..0a6a5b1e2e7 100644
--- a/compiler/testData/checkerWithErrorTypes/full/RecursiveTypeInference.jet
+++ b/compiler/testData/checkerWithErrorTypes/full/RecursiveTypeInference.jet
@@ -5,15 +5,15 @@ namespace a {
 }
 
 namespace b {
-    fun foo() = <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>bar()<!>
+    fun foo() = bar()
 
-    fun bar() = foo()
+    fun bar() = <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>foo()<!>
 }
 
 namespace c {
-    fun bazz() = <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>bar()<!>
+    fun bazz() = bar()
 
-    fun foo() = bazz()
+    fun foo() = <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>bazz()<!>
 
     fun bar() = foo()
 }
@@ -39,4 +39,4 @@ namespace ok {
 
         fun bar() = foo()
     }
-}
\ No newline at end of file
+}
diff --git a/compiler/testData/checkerWithErrorTypes/full/regression/kt588.jet b/compiler/testData/checkerWithErrorTypes/full/regression/kt588.jet
new file mode 100644
index 00000000000..2b4b4d86ff4
--- /dev/null
+++ b/compiler/testData/checkerWithErrorTypes/full/regression/kt588.jet
@@ -0,0 +1,12 @@
+// KT-588 Unresolved static method
+class Test() : Thread("Test") {
+    class object {
+        fun init2() {
+
+        }
+    }
+    override fun run() {
+        init2()      // unresolved
+        Test.init2() // ok
+    }
+}
\ No newline at end of file
diff --git a/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328.jet b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328.jet
new file mode 100644
index 00000000000..2593c440b51
--- /dev/null
+++ b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328.jet
@@ -0,0 +1,3 @@
+fun bar() = {
+    <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>bar()<!>
+}
diff --git a/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328Complex.jet b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328Complex.jet
new file mode 100644
index 00000000000..9caa6193206
--- /dev/null
+++ b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328Complex.jet
@@ -0,0 +1,3 @@
+fun bar() = {
+    fun foo() = <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>bar()<!>
+}
diff --git a/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328DuplicatedByKt329.jet b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328DuplicatedByKt329.jet
new file mode 100644
index 00000000000..35a66da2884
--- /dev/null
+++ b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt328DuplicatedByKt329.jet
@@ -0,0 +1,7 @@
+// http://youtrack.jetbrains.net/issue/KT-329
+
+fun block(f : fun() : Unit) = f()
+
+fun bar() = block{ <!UNRESOLVED_REFERENCE!>foo<!>() // <-- missing closing curly bracket
+fun foo() = block{ <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>bar()<!> }
+
diff --git a/compiler/testData/checkerWithErrorTypes/quick/regressions/kt394.jet b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt394.jet
new file mode 100644
index 00000000000..8e58588f4b0
--- /dev/null
+++ b/compiler/testData/checkerWithErrorTypes/quick/regressions/kt394.jet
@@ -0,0 +1,11 @@
+// KT-394 Make class object members visible inside the owning class
+
+class X() {
+//    class Y {}
+
+    class object{
+        class Y() {}
+    }
+
+    val y : Y = Y()
+}
\ No newline at end of file
diff --git a/compiler/testData/codegen/inputStreamIterator.jet b/compiler/testData/codegen/inputStreamIterator.jet
index 2c1d4e89857..7be02b077f2 100644
--- a/compiler/testData/codegen/inputStreamIterator.jet
+++ b/compiler/testData/codegen/inputStreamIterator.jet
@@ -1,16 +1,7 @@
+import std.io.*
+
 import java.io.*
 
-val ByteArray.inputStream : ByteArrayInputStream
-    get() = ByteArrayInputStream(this)
-
-fun InputStream.iterator() : ByteIterator =
-    object: ByteIterator() {
-        override val hasNext : Boolean
-            get() = available() > 0
-
-        override fun nextByte() = read().byt
-    }
-
 fun box() : String {
     val x = ByteArray (10)
 
diff --git a/compiler/testData/codegen/regressions/kt528.kt b/compiler/testData/codegen/regressions/kt528.kt
new file mode 100644
index 00000000000..456f55d04be
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt528.kt
@@ -0,0 +1,118 @@
+namespace mask
+
+import std.io.*
+import java.io.*
+import java.util.*
+import java.util.Iterator as It
+import java.lang.Iterable as Itl
+
+fun box() : String {
+    val input = StringReader("/Users/abreslav/work/jet/docs/luhnybin/src/test")
+
+    val luhny = Luhny()
+    input.forEachChar {
+        luhny.charIn(it)
+    }
+    luhny.printAll()
+    return "OK"
+}
+
+class Luhny() {
+    val buffer = LinkedList<Char>()
+    val digits = LinkedList<Int>()
+
+    var toBeMasked = 0
+
+    fun charIn(it : Char) {
+        buffer.addLast(it)
+        when (it) {
+            .isDigit() => digits.addLast(it.int - '0'.int)
+            ' ', '-' => {}
+            else => {
+                    printAll()
+                    digits.clear()
+            }
+        }
+        if (digits.size() > 16)
+          printOneDigit()
+        check()
+    }
+
+    fun check() {
+        if (digits.size() < 14) return
+        print("check")
+        val sum = digits.sum { i, d =>
+//            println("$i -> $d")
+            if (i % 2 == digits.size()) {
+                val f = d * 2 / 10
+                val s = d * 2 % 10
+//                println("$d: f = $f, s = $s")
+                (f + s).pr {
+//                    println("to be doubled: $i -> $d : $it")
+                }
+            } else d
+        }
+//        println(sum)
+        if (sum % 10 == 0) {print("s"); toBeMasked = digits.size()}
+    }
+
+    fun printOneDigit() {
+        while (!buffer.isEmpty()) {
+            val c = buffer.removeFirst()
+            out(c)
+            if (c.isDigit()) {
+                digits.removeFirst()
+                return
+            }
+        }
+    }
+
+    fun printAll() {
+        while (!buffer.isEmpty())
+          out(buffer.removeFirst())
+    }
+
+    fun out(c : Char) {
+        if (toBeMasked > 0) {
+            print('X')
+            toBeMasked--
+        }
+        else {
+            print(c)
+        }
+    }
+}
+
+fun <T> T.pr(f : fun(T) : Unit) : T {
+    f(this)
+    return this
+}
+
+fun LinkedList<Int>.sum(f : fun(Int, Int ): Int): Int {
+    var sum = 0
+    for (i in 1..size()) {
+        val j = size() - i
+        sum += f(j, get(j))
+    }
+    return sum
+}
+
+//fun <T> List<T>.backwards() : Itl<T> = object : Itl<T> {
+//  override fun iterator() : It<T> =
+//      object : It<T> {
+//          var current = size()
+//          override fun next() : T = get(--current)
+//          override fun hasNext() : Boolean = current > 0
+//          override fun remove() {throw UnsupportedOperationException()}
+//      }
+//}
+
+fun Char.isDigit() = Character.isDigit(this)
+
+fun Reader.forEachChar(body : fun(Char) : Unit) {
+    do {
+        var i = read();
+        if (i == -1) break
+        body(i.chr)
+    } while(true)
+}
\ No newline at end of file
diff --git a/compiler/testData/codegen/regressions/kt529.kt b/compiler/testData/codegen/regressions/kt529.kt
new file mode 100644
index 00000000000..66487f37509
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt529.kt
@@ -0,0 +1,98 @@
+namespace mask
+
+import std.io.*
+import java.io.*
+import java.util.*
+
+fun box() : String {
+    val input = StringReader("/Users/abreslav/work/jet/docs/luhnybin/src/test")
+
+    val luhny = Luhny()
+    input.forEachChar {
+        luhny.process(it)
+    }
+    luhny.printAll()
+    return "OK"
+}
+
+class Luhny() {
+    private val buffer = ArrayDeque<Char>()
+    private val digits = ArrayDeque<Int>(16)
+
+    private var toBeMasked = 0
+
+    fun process(it : Char) {
+        buffer.addLast(it)
+        when (it) {
+            .isDigit() => digits.addLast(it.int - '0'.int)
+            ' ', '-'   => {}
+            else       => printAll()
+        }
+        if (digits.size() > 16)
+          printOneDigit()
+        check()
+    }
+
+    private fun check() {
+        val size = digits.size()
+        if (size < 14) return
+        val sum = digits.sum {i, d =>
+            if (i % 2 == size % 2) double(d) else d
+        }
+//        var sum = 0
+//        var i = 0
+//        for (d in digits) {
+//            sum += if (i % 2 == size % 2) double(d) else d
+//            i++
+//        }
+        if (sum % 10 == 0) toBeMasked = digits.size()
+    }
+
+    private fun double(d : Int) = d * 2 / 10 + d * 2 % 10
+
+    private fun printOneDigit() {
+        while (!buffer.isEmpty()) {
+            val c = buffer.removeFirst()
+            print(c)
+            if (c.isDigit()) {
+                digits.removeFirst()
+                return
+            }
+        }
+    }
+
+    private fun printAll() {
+        while (!buffer.isEmpty())
+          print(buffer.removeFirst())
+        digits.clear()
+    }
+
+    private fun print(c : Char) {
+        if (c.isDigit() && toBeMasked > 0) {
+            std.io.print('X')
+            toBeMasked--
+        } else {
+            std.io.print(c)
+        }
+    }
+}
+
+fun Char.isDigit() = Character.isDigit(this)
+
+fun java.lang.Iterable<Int>.sum(f : fun(index : Int, value : Int) : Int) : Int {
+    var sum = 0
+    var i = 0
+    for (d in this) {
+        sum += f(i, d)
+        i++
+    }
+    return sum
+}
+
+fun Reader.forEachChar(body : fun(Char) : Unit) {
+    do {
+        var i = read();
+        if (i == -1) break
+        body(i.chr)
+    } while(true)
+}
\ No newline at end of file
diff --git a/compiler/testData/codegen/regressions/kt533.kt b/compiler/testData/codegen/regressions/kt533.kt
new file mode 100644
index 00000000000..05e55878b81
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt533.kt
@@ -0,0 +1,134 @@
+namespace mask
+
+import std.io.*
+import java.io.*
+import java.util.*
+
+fun box() : String {
+    val input = StringReader("/Users/abreslav/work/jet/docs/luhnybin/src/test")
+
+    val luhny = Luhny()
+    input.forEachChar {
+        luhny.charIn(it)
+    }
+    luhny.printAll()
+    return "OK"
+
+}
+
+class Luhny() {
+    val buffer = LinkedList<Char>()
+    val digits = LinkedList<Int>()
+
+    var toBeMasked = 0
+
+    fun charIn(it : Char) {
+        buffer.push(it)
+        when (it) {
+            .isDigit() => digits.push(it.int - '0'.int)
+            ' ', '-' => {}
+            else => {
+                    printAll()
+                    digits.clear()
+            }
+        }
+        if (digits.size() > 16)
+          printOneDigit()
+        check()
+    }
+
+    fun check() {
+        if (digits.size() < 14) return
+        val sum = digits.sum { i, d =>
+            if (i % 2 != 0)
+                d * 2 / 10 +  d * 2 % 10
+            else d
+        }
+        if (sum % 10 == 0) toBeMasked = digits.size()
+    }
+
+    fun printOneDigit() {
+        while (!buffer.isEmpty()) {
+            val c = buffer.pop()
+            out(c)
+            if (c.isDigit()) {
+                digits.pop()
+                return
+            }
+        }
+    }
+
+    fun printAll() {
+        while (!buffer.isEmpty())
+          out(buffer.pop())
+    }
+
+    fun out(c : Char) {
+        if (toBeMasked > 0) {
+            print('X')
+            toBeMasked--
+        }
+        else {
+            print(c)
+        }
+    }
+}
+
+fun LinkedList<Int>.sum(f : fun(Int, Int) : Int) : Int {
+    var sum = 0
+    var i = 0
+    for (d in backwards()) {
+        sum += f(i, d)
+        i++
+    }
+    return sum
+}
+
+fun <T> List<T>.backwards() : Iterable<T> = object : Iterable<T> {
+  override fun iterator() : Iterator<T> =
+      object : Iterator<T> {
+          var current = size()
+          override fun next() : T = get(--current)
+          override val hasNext : Boolean get() = current > 0
+      }
+}
+
+fun Char.isDigit() = Character.isDigit(this)
+
+//class Queue<T>(initialBufSize : Int) {
+//
+//    private var bufSize = initialBufSize
+//    private val buf = Array<T>(initialBufSize)
+//    private var head = 0
+//    private var tail = 0
+//    private var size = 0
+//
+//    val empty : Boolean get() = size == 0
+//
+//    private fun prev(i : Int) = (bufSize + i - 1) % bufSize
+//    private fun next(i : Int) = (i + 1) % bufSize
+//
+//    fun push(c : T) {
+//        buf[tail] = c
+//        tail = prev(tail)
+//        size++
+//    }
+//
+//    fun pop() : T {
+//        if (size == 0) throw IllegalStateException()
+//        size--
+//        val result = buf[head]
+//        head = prev(head)
+//        return result
+//    }
+//
+//    fun clear() {}
+//}
+
+fun Reader.forEachChar(body : fun(Char) : Unit) {
+    do {
+        var i = read();
+        if (i == -1) break
+        body(i.chr)
+    } while(true)
+}
\ No newline at end of file
diff --git a/compiler/testData/codegen/regressions/kt594.jet b/compiler/testData/codegen/regressions/kt594.jet
new file mode 100644
index 00000000000..70d94715100
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt594.jet
@@ -0,0 +1,16 @@
+namespace array_test
+
+fun box() : String {
+    var array : IntArray? = IntArray(10)
+    array?.set(0, 3)
+    if(array?.get(0) != 3) return "fail"
+
+    var a = Array<Array<String?>?>(5)
+    var b = Array<String?>(1)
+    b.set(0, "239")
+    a?.set(0, b)
+
+    if(a?.get(0)?.get(0) != "239") return "fail"
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/compiler/tests/org/jetbrains/jet/JetLiteFixture.java b/compiler/tests/org/jetbrains/jet/JetLiteFixture.java
index f975ba79778..3ed62e38ddb 100644
--- a/compiler/tests/org/jetbrains/jet/JetLiteFixture.java
+++ b/compiler/tests/org/jetbrains/jet/JetLiteFixture.java
@@ -28,7 +28,7 @@ public abstract class JetLiteFixture extends UsefulTestCase {
     @NonNls
     protected final String myFullDataPath;
     protected JetFile myFile;
-    private JetCoreEnvironment myEnvironment;
+    protected JetCoreEnvironment myEnvironment;
 
     public JetLiteFixture(@NonNls String dataPath) {
         myFullDataPath = getTestDataPath() + "/" + dataPath;
diff --git a/compiler/tests/org/jetbrains/jet/checkers/FullJetPsiCheckerTest.java b/compiler/tests/org/jetbrains/jet/checkers/FullJetPsiCheckerTest.java
index 986f6501d10..b16946132bf 100644
--- a/compiler/tests/org/jetbrains/jet/checkers/FullJetPsiCheckerTest.java
+++ b/compiler/tests/org/jetbrains/jet/checkers/FullJetPsiCheckerTest.java
@@ -8,8 +8,11 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.JetLiteFixture;
 import org.jetbrains.jet.JetTestCaseBuilder;
 import org.jetbrains.jet.lang.diagnostics.DiagnosticUtils;
+import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
 import org.jetbrains.jet.lang.resolve.BindingContext;
+import org.jetbrains.jet.lang.resolve.ImportingStrategy;
 import org.jetbrains.jet.lang.resolve.java.AnalyzerFacade;
+import org.jetbrains.jet.lang.resolve.java.JavaDefaultImports;
 
 import java.util.List;
 
@@ -42,7 +45,11 @@ public class FullJetPsiCheckerTest extends JetLiteFixture {
         String clearText = CheckerTestUtil.parseDiagnosedRanges(expectedText, diagnosedRanges);
 
         myFile = createPsiFile(myName, clearText);
-        BindingContext bindingContext = AnalyzerFacade.analyzeFileWithCache(myFile, AnalyzerFacade.SINGLE_DECLARATION_PROVIDER);
+
+        boolean importJdk = !expectedText.contains("-JDK");
+        ImportingStrategy importingStrategy = importJdk ? JavaDefaultImports.JAVA_DEFAULT_IMPORTS : ImportingStrategy.NONE;
+
+        BindingContext bindingContext = AnalyzerFacade.analyzeFileWithCache(AnalyzingUtils.getInstance(importingStrategy), myFile, AnalyzerFacade.SINGLE_DECLARATION_PROVIDER);
 
         CheckerTestUtil.diagnosticsDiff(diagnosedRanges, bindingContext.getDiagnostics(), new CheckerTestUtil.DiagnosticDiffCallbacks() {
             @Override
diff --git a/compiler/tests/org/jetbrains/jet/checkers/QuickJetPsiCheckerTest.java b/compiler/tests/org/jetbrains/jet/checkers/QuickJetPsiCheckerTest.java
index d6ead64cdf1..d7ae428139f 100644
--- a/compiler/tests/org/jetbrains/jet/checkers/QuickJetPsiCheckerTest.java
+++ b/compiler/tests/org/jetbrains/jet/checkers/QuickJetPsiCheckerTest.java
@@ -13,6 +13,7 @@ import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
 import org.jetbrains.jet.lang.resolve.BindingContext;
 import org.jetbrains.jet.lang.resolve.ImportingStrategy;
 import org.jetbrains.jet.lang.resolve.java.AnalyzerFacade;
+import org.jetbrains.jet.lang.resolve.java.JavaDefaultImports;
 
 import java.util.List;
 
@@ -40,7 +41,11 @@ public class QuickJetPsiCheckerTest extends JetLiteFixture {
 
         createAndCheckPsiFile(name, clearText);
         JetFile jetFile = (JetFile) myFile;
-        BindingContext bindingContext = AnalyzerFacade.analyzeFileWithCache(AnalyzingUtils.getInstance(ImportingStrategy.NONE), jetFile, AnalyzerFacade.SINGLE_DECLARATION_PROVIDER);
+
+        boolean importJdk = expectedText.contains("+JDK");
+        ImportingStrategy importingStrategy = importJdk ? JavaDefaultImports.JAVA_DEFAULT_IMPORTS : ImportingStrategy.NONE;
+
+        BindingContext bindingContext = AnalyzerFacade.analyzeFileWithCache(AnalyzingUtils.getInstance(importingStrategy), jetFile, AnalyzerFacade.SINGLE_DECLARATION_PROVIDER);
 
         CheckerTestUtil.diagnosticsDiff(diagnosedRanges, bindingContext.getDiagnostics(), new CheckerTestUtil.DiagnosticDiffCallbacks() {
             @Override
diff --git a/compiler/tests/org/jetbrains/jet/codegen/ArrayGenTest.java b/compiler/tests/org/jetbrains/jet/codegen/ArrayGenTest.java
index c611dad097d..80063a36516 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/ArrayGenTest.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/ArrayGenTest.java
@@ -275,4 +275,10 @@ public class ArrayGenTest extends CodegenTestCase {
     public void testKt503() {
         blackBoxFile("regressions/kt503.jet");
     }
+
+    public void testKt594() throws Exception {
+        loadFile("regressions/kt594.jet");
+        System.out.println(generateToText());
+        blackBox();
+    }
 }
diff --git a/compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java b/compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java
index 45723092fcd..8c584e9cc26 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java
@@ -93,25 +93,16 @@ public abstract class CodegenTestCase extends JetLiteFixture {
         final JetNamespace namespace = myFile.getRootNamespace();
         String fqName = NamespaceCodegen.getJVMClassName(CodegenUtil.getFQName(namespace)).replace("/", ".");
         Class<?> namespaceClass = loader.loadClass(fqName);
-            Method method = namespaceClass.getMethod("box");
-            return (String) method.invoke(null);
-        }
+        Method method = namespaceClass.getMethod("box");
+        return (String) method.invoke(null);
+    }
 
     protected String generateToText() {
         GenerationState state = new GenerationState(getProject(), ClassBuilderFactory.TEXT);
         AnalyzingUtils.checkForSyntacticErrors(myFile);
         state.compile(myFile);
 
-        StringBuilder answer = new StringBuilder();
-
-        final ClassFileFactory factory = state.getFactory();
-        List<String> files = factory.files();
-        for (String file : files) {
-            answer.append("@").append(file).append('\n');
-            answer.append(factory.asText(file));
-        }
-
-        return answer.toString();
+        return state.createText();
     }
 
     protected Class generateNamespaceClass() {
diff --git a/compiler/tests/org/jetbrains/jet/codegen/StdlibTest.java b/compiler/tests/org/jetbrains/jet/codegen/StdlibTest.java
index 1e3f514a26a..fdfbbecfa5b 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/StdlibTest.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/StdlibTest.java
@@ -1,25 +1,88 @@
 package org.jetbrains.jet.codegen;
 
+import com.intellij.openapi.util.io.FileUtil;
+import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.openapi.vfs.CharsetToolkit;
+import com.intellij.openapi.vfs.LocalFileSystem;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.psi.PsiFile;
+import org.jetbrains.jet.compiler.CompileSession;
 import org.jetbrains.jet.lang.psi.JetNamespace;
+import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
+import org.jetbrains.jet.parsing.JetParsingTest;
 
-import java.lang.reflect.Method;
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
 
 /**
  * @author alex.tkachman
  */
 public class StdlibTest extends CodegenTestCase {
-    public void testLib () throws ClassNotFoundException {
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
         createEnvironmentWithFullJdk();
-        loadFile("../../../stdlib/ktSrc/StandardLibrary.kt");
-        ClassFileFactory codegens = generateClassesInFile();
-        GeneratedClassLoader loader = new GeneratedClassLoader(codegens);
+    }
+    
+    protected String generateToText() {
+        CompileSession session = new CompileSession(myEnvironment);
 
-        final JetNamespace namespace = myFile.getRootNamespace();
-        String fqName = NamespaceCodegen.getJVMClassName(CodegenUtil.getFQName(namespace)).replace("/", ".");
-        Class<?> namespaceClass = loader.loadClass(fqName);
+        session.addSources(myFile.getVirtualFile());
+        try {
+            session.addSources(addStdLib());
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+        if (!session.analyze(System.out)) {
+            return null;
+        }
+
+        return session.generateText();
+    }
+
+    protected ClassFileFactory generateClassesInFile() {
+        try {
+            CompileSession session = new CompileSession(myEnvironment);
+
+            session.addSources(myFile.getVirtualFile());
+            session.addSources(addStdLib());
+
+            if (!session.analyze(System.out)) {
+                return null;
+            }
+
+            return session.generate();
+        } catch (RuntimeException e) {
+            System.out.println(generateToText());
+            throw e;
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private VirtualFile addStdLib() throws IOException {
+        String text = FileUtil.loadFile(new File(JetParsingTest.getTestDataDir() + "/../../stdlib/ktSrc/StandardLibrary.kt"), CharsetToolkit.UTF8).trim();
+        text = StringUtil.convertLineSeparators(text);
+        PsiFile stdLibFile = createFile("StandardLibrary.kt", text);
+        return stdLibFile.getVirtualFile();
     }
 
     public void testInputStreamIterator () {
         blackBoxFile("inputStreamIterator.jet");
+        System.out.println(generateToText());
+    }
+
+    public void testKt533 () {
+        blackBoxFile("regressions/kt533.kt");
+    }
+
+    public void testKt529 () {
+        blackBoxFile("regressions/kt529.kt");
+    }
+
+    public void testKt528 () {
+        blackBoxFile("regressions/kt528.kt");
     }
 }
diff --git a/compiler/tests/org/jetbrains/jet/types/JetDefaultModalityModifiersTest.java b/compiler/tests/org/jetbrains/jet/types/JetDefaultModalityModifiersTest.java
index bb86813770e..fb9556a89c3 100644
--- a/compiler/tests/org/jetbrains/jet/types/JetDefaultModalityModifiersTest.java
+++ b/compiler/tests/org/jetbrains/jet/types/JetDefaultModalityModifiersTest.java
@@ -6,7 +6,7 @@ import org.jetbrains.jet.lang.JetSemanticServices;
 import org.jetbrains.jet.lang.descriptors.*;
 import org.jetbrains.jet.lang.psi.*;
 import org.jetbrains.jet.lang.resolve.BindingContext;
-import org.jetbrains.jet.lang.resolve.ClassDescriptorResolver;
+import org.jetbrains.jet.lang.resolve.DescriptorResolver;
 import org.jetbrains.jet.lang.resolve.java.AnalyzerFacade;
 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
 import org.jetbrains.jet.lang.resolve.scopes.RedeclarationHandler;
@@ -29,13 +29,13 @@ public class JetDefaultModalityModifiersTest extends JetLiteFixture {
 
     public class JetDefaultModalityModifiersTestCase  {
         private ModuleDescriptor root = new ModuleDescriptor("test_root");
-        private ClassDescriptorResolver classDescriptorResolver;
+        private DescriptorResolver descriptorResolver;
         private JetScope scope;
 
         public void setUp() throws Exception {
             JetStandardLibrary library = JetStandardLibrary.getJetStandardLibrary(getProject());
             JetSemanticServices semanticServices = JetSemanticServices.createSemanticServices(library);
-            classDescriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_EXCEPTION_ON_ERROR_TRACE);
+            descriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_EXCEPTION_ON_ERROR_TRACE);
             scope = createScope(library.getLibraryScope());
         }
 
@@ -54,7 +54,7 @@ public class JetDefaultModalityModifiersTest extends JetLiteFixture {
 
         private MutableClassDescriptor createClassDescriptor(ClassKind kind, JetClass aClass) {
             MutableClassDescriptor classDescriptor = new MutableClassDescriptor(JetTestUtils.DUMMY_TRACE, root, scope, kind);
-            classDescriptorResolver.resolveMutableClassDescriptor(aClass, classDescriptor);
+            descriptorResolver.resolveMutableClassDescriptor(aClass, classDescriptor);
             return classDescriptor;
         }
 
@@ -72,7 +72,7 @@ public class JetDefaultModalityModifiersTest extends JetLiteFixture {
 
             List<JetDeclaration> declarations = aClass.getDeclarations();
             JetNamedFunction function = (JetNamedFunction) declarations.get(0);
-            FunctionDescriptorImpl functionDescriptor = classDescriptorResolver.resolveFunctionDescriptor(classDescriptor, scope, function);
+            FunctionDescriptorImpl functionDescriptor = descriptorResolver.resolveFunctionDescriptor(classDescriptor, scope, function);
 
             assertEquals(expectedFunctionModality, functionDescriptor.getModality());
         }
@@ -83,7 +83,7 @@ public class JetDefaultModalityModifiersTest extends JetLiteFixture {
 
             List<JetDeclaration> declarations = aClass.getDeclarations();
             JetProperty property = (JetProperty) declarations.get(0);
-            PropertyDescriptor propertyDescriptor = classDescriptorResolver.resolvePropertyDescriptor(classDescriptor, scope, property);
+            PropertyDescriptor propertyDescriptor = descriptorResolver.resolvePropertyDescriptor(classDescriptor, scope, property);
 
             assertEquals(expectedPropertyModality, propertyDescriptor.getModality());
         }
@@ -95,7 +95,7 @@ public class JetDefaultModalityModifiersTest extends JetLiteFixture {
 
             List<JetDeclaration> declarations = aClass.getDeclarations();
             JetProperty property = (JetProperty) declarations.get(0);
-            PropertyDescriptor propertyDescriptor = classDescriptorResolver.resolvePropertyDescriptor(classDescriptor, scope, property);
+            PropertyDescriptor propertyDescriptor = descriptorResolver.resolvePropertyDescriptor(classDescriptor, scope, property);
             PropertyAccessorDescriptor propertyAccessor = isGetter
                                                           ? propertyDescriptor.getGetter()
                                                           : propertyDescriptor.getSetter();
diff --git a/compiler/tests/org/jetbrains/jet/types/JetOverloadTest.java b/compiler/tests/org/jetbrains/jet/types/JetOverloadTest.java
index eb7a016e836..00631f8d26a 100644
--- a/compiler/tests/org/jetbrains/jet/types/JetOverloadTest.java
+++ b/compiler/tests/org/jetbrains/jet/types/JetOverloadTest.java
@@ -8,7 +8,7 @@ import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
 import org.jetbrains.jet.lang.descriptors.ModuleDescriptor;
 import org.jetbrains.jet.lang.psi.JetNamedFunction;
 import org.jetbrains.jet.lang.psi.JetPsiFactory;
-import org.jetbrains.jet.lang.resolve.ClassDescriptorResolver;
+import org.jetbrains.jet.lang.resolve.DescriptorResolver;
 import org.jetbrains.jet.lang.resolve.OverloadUtil;
 import org.jetbrains.jet.lang.types.JetStandardLibrary;
 
@@ -20,14 +20,14 @@ public class JetOverloadTest extends JetLiteFixture {
     private ModuleDescriptor root = new ModuleDescriptor("test_root");
     private JetStandardLibrary library;
     private JetSemanticServices semanticServices;
-    private ClassDescriptorResolver classDescriptorResolver;
+    private DescriptorResolver descriptorResolver;
 
     @Override
     public void setUp() throws Exception {
         super.setUp();
         library          = JetStandardLibrary.getJetStandardLibrary(getProject());
         semanticServices = JetSemanticServices.createSemanticServices(library);
-        classDescriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_TRACE);
+        descriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_TRACE);
     }
 
     @Override
@@ -152,7 +152,7 @@ public class JetOverloadTest extends JetLiteFixture {
 
     private FunctionDescriptor makeFunction(String funDecl) {
         JetNamedFunction function = JetPsiFactory.createFunction(getProject(), funDecl);
-        return classDescriptorResolver.resolveFunctionDescriptor(root, library.getLibraryScope(), function);
+        return descriptorResolver.resolveFunctionDescriptor(root, library.getLibraryScope(), function);
     }
 
 }
diff --git a/compiler/tests/org/jetbrains/jet/types/JetOverridingTest.java b/compiler/tests/org/jetbrains/jet/types/JetOverridingTest.java
index 18b27921f61..6053d5ecc59 100644
--- a/compiler/tests/org/jetbrains/jet/types/JetOverridingTest.java
+++ b/compiler/tests/org/jetbrains/jet/types/JetOverridingTest.java
@@ -8,7 +8,7 @@ import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
 import org.jetbrains.jet.lang.descriptors.ModuleDescriptor;
 import org.jetbrains.jet.lang.psi.JetNamedFunction;
 import org.jetbrains.jet.lang.psi.JetPsiFactory;
-import org.jetbrains.jet.lang.resolve.ClassDescriptorResolver;
+import org.jetbrains.jet.lang.resolve.DescriptorResolver;
 import org.jetbrains.jet.lang.resolve.OverridingUtil;
 import org.jetbrains.jet.lang.types.JetStandardLibrary;
 
@@ -20,14 +20,14 @@ public class JetOverridingTest extends JetLiteFixture {
     private ModuleDescriptor root = new ModuleDescriptor("test_root");
     private JetStandardLibrary library;
     private JetSemanticServices semanticServices;
-    private ClassDescriptorResolver classDescriptorResolver;
+    private DescriptorResolver descriptorResolver;
 
     @Override
     public void setUp() throws Exception {
         super.setUp();
         library          = JetStandardLibrary.getJetStandardLibrary(getProject());
         semanticServices = JetSemanticServices.createSemanticServices(library);
-        classDescriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_TRACE);
+        descriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_TRACE);
     }
 
     @Override
@@ -145,6 +145,6 @@ public class JetOverridingTest extends JetLiteFixture {
 
     private FunctionDescriptor makeFunction(String funDecl) {
         JetNamedFunction function = JetPsiFactory.createFunction(getProject(), funDecl);
-        return classDescriptorResolver.resolveFunctionDescriptor(root, library.getLibraryScope(), function);
+        return descriptorResolver.resolveFunctionDescriptor(root, library.getLibraryScope(), function);
     }
 }
diff --git a/compiler/tests/org/jetbrains/jet/types/JetTypeCheckerTest.java b/compiler/tests/org/jetbrains/jet/types/JetTypeCheckerTest.java
index 66941d6ac14..bc2d5e09fa3 100644
--- a/compiler/tests/org/jetbrains/jet/types/JetTypeCheckerTest.java
+++ b/compiler/tests/org/jetbrains/jet/types/JetTypeCheckerTest.java
@@ -30,7 +30,7 @@ public class JetTypeCheckerTest extends JetLiteFixture {
     private JetStandardLibrary library;
     private JetSemanticServices semanticServices;
     private ClassDefinitions classDefinitions;
-    private ClassDescriptorResolver classDescriptorResolver;
+    private DescriptorResolver descriptorResolver;
     private JetScope scopeWithImports;
     private TypeResolver typeResolver;
 
@@ -44,7 +44,7 @@ public class JetTypeCheckerTest extends JetLiteFixture {
         library          = JetStandardLibrary.getJetStandardLibrary(getProject());
         semanticServices = JetSemanticServices.createSemanticServices(library);
         classDefinitions = new ClassDefinitions();
-        classDescriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_TRACE);
+        descriptorResolver = semanticServices.getClassDescriptorResolver(JetTestUtils.DUMMY_TRACE);
         scopeWithImports = addImports(classDefinitions.BASIC_SCOPE);
         typeResolver = new TypeResolver(semanticServices, JetTestUtils.DUMMY_TRACE, true);
     }
@@ -604,7 +604,7 @@ public class JetTypeCheckerTest extends JetLiteFixture {
                 Set<FunctionDescriptor> writableFunctionGroup = Sets.newLinkedHashSet();
                 ModuleDescriptor module = new ModuleDescriptor("TypeCheckerTest");
                 for (String funDecl : FUNCTION_DECLARATIONS) {
-                    FunctionDescriptor functionDescriptor = classDescriptorResolver.resolveFunctionDescriptor(module, this, JetPsiFactory.createFunction(getProject(), funDecl));
+                    FunctionDescriptor functionDescriptor = descriptorResolver.resolveFunctionDescriptor(module, this, JetPsiFactory.createFunction(getProject(), funDecl));
                     if (name.equals(functionDescriptor.getName())) {
                         writableFunctionGroup.add(functionDescriptor);
                     }
@@ -628,14 +628,14 @@ public class JetTypeCheckerTest extends JetLiteFixture {
 
             // This call has side-effects on the parameterScope (fills it in)
             List<TypeParameterDescriptor> typeParameters
-                    = classDescriptorResolver.resolveTypeParameters(classDescriptor, parameterScope, classElement.getTypeParameters());
-            classDescriptorResolver.resolveGenericBounds(classElement, parameterScope, typeParameters);
+                    = descriptorResolver.resolveTypeParameters(classDescriptor, parameterScope, classElement.getTypeParameters());
+            descriptorResolver.resolveGenericBounds(classElement, parameterScope, typeParameters);
 
             List<JetDelegationSpecifier> delegationSpecifiers = classElement.getDelegationSpecifiers();
             // TODO : assuming that the hierarchy is acyclic
             Collection<JetType> supertypes = delegationSpecifiers.isEmpty()
                     ? Collections.singleton(JetStandardClasses.getAnyType())
-                    : classDescriptorResolver.resolveDelegationSpecifiers(parameterScope, delegationSpecifiers, typeResolver);
+                    : descriptorResolver.resolveDelegationSpecifiers(parameterScope, delegationSpecifiers, typeResolver);
     //        for (JetType supertype: supertypes) {
     //            if (supertype.getConstructor().isSealed()) {
     //                trace.getErrorHandler().genericError(classElement.getNameAsDeclaration().getNode(), "Class " + classElement.getName() + " can not extend final type " + supertype);
@@ -651,7 +651,7 @@ public class JetTypeCheckerTest extends JetLiteFixture {
                     @Override
                     public void visitProperty(JetProperty property) {
                         if (property.getPropertyTypeRef() != null) {
-                            memberDeclarations.addVariableDescriptor(classDescriptorResolver.resolvePropertyDescriptor(classDescriptor, parameterScope, property));
+                            memberDeclarations.addVariableDescriptor(descriptorResolver.resolvePropertyDescriptor(classDescriptor, parameterScope, property));
                         } else {
                             // TODO : Caution: a cyclic dependency possible
                             throw new UnsupportedOperationException();
@@ -661,7 +661,7 @@ public class JetTypeCheckerTest extends JetLiteFixture {
                     @Override
                     public void visitNamedFunction(JetNamedFunction function) {
                         if (function.getReturnTypeRef() != null) {
-                            memberDeclarations.addFunctionDescriptor(classDescriptorResolver.resolveFunctionDescriptor(classDescriptor, parameterScope, function));
+                            memberDeclarations.addFunctionDescriptor(descriptorResolver.resolveFunctionDescriptor(classDescriptor, parameterScope, function));
                         } else {
                             // TODO : Caution: a cyclic dependency possible
                             throw new UnsupportedOperationException();
@@ -685,11 +685,11 @@ public class JetTypeCheckerTest extends JetLiteFixture {
                     null
             );
             for (JetSecondaryConstructor constructor : classElement.getSecondaryConstructors()) {
-                ConstructorDescriptorImpl functionDescriptor = classDescriptorResolver.resolveSecondaryConstructorDescriptor(memberDeclarations, classDescriptor, constructor);
+                ConstructorDescriptorImpl functionDescriptor = descriptorResolver.resolveSecondaryConstructorDescriptor(memberDeclarations, classDescriptor, constructor);
                 functionDescriptor.setReturnType(classDescriptor.getDefaultType());
                 constructors.add(functionDescriptor);
             }
-            ConstructorDescriptorImpl primaryConstructorDescriptor = classDescriptorResolver.resolvePrimaryConstructorDescriptor(scope, classDescriptor, classElement);
+            ConstructorDescriptorImpl primaryConstructorDescriptor = descriptorResolver.resolvePrimaryConstructorDescriptor(scope, classDescriptor, classElement);
             if (primaryConstructorDescriptor != null) {
                 primaryConstructorDescriptor.setReturnType(classDescriptor.getDefaultType());
                 constructors.add(primaryConstructorDescriptor);
diff --git a/docs/exPuzzlers/kotlin/std.kt b/docs/exPuzzlers/kotlin/std.kt
index 9ad7308aae7..31cd9bf4f8f 100644
--- a/docs/exPuzzlers/kotlin/std.kt
+++ b/docs/exPuzzlers/kotlin/std.kt
@@ -9,7 +9,7 @@ inline fun array(vararg array : Long) = array
 inline fun array(vararg array : Double) = array
 inline fun array(vararg array : Float) = array
 
-fun Any?.identityEquals(other : Any?) = this === other
+//fun Any?.identityEquals(other : Any?) = this === other
 
 inline fun <T : Any> T?.sure() : T {
     if (this == null)
diff --git a/docs/exPuzzlers/src/_03_character/_13_Animal_Farm/AnimalFarm.kt b/docs/exPuzzlers/src/_03_character/_13_Animal_Farm/AnimalFarm.kt
index fe0c51d44a9..7dd33235955 100644
--- a/docs/exPuzzlers/src/_03_character/_13_Animal_Farm/AnimalFarm.kt
+++ b/docs/exPuzzlers/src/_03_character/_13_Animal_Farm/AnimalFarm.kt
@@ -12,5 +12,5 @@ fun main(args : Array<String>) {
     println("Animals are equal: " + (pig == dog));
 
     // Note:
-    println("Animals are equal: " + (pig identityEquals dog));
+    println("Animals are equal: " + (pig identityEquals dog))
 }
\ No newline at end of file
diff --git a/docs/exPuzzlers/src/_06_classy/_48_All_I_Get_Is_Static/Bark.kt b/docs/exPuzzlers/src/_06_classy/_48_All_I_Get_Is_Static/Bark.kt
index 2cf523b8e1b..4c2fbb0bc40 100644
--- a/docs/exPuzzlers/src/_06_classy/_48_All_I_Get_Is_Static/Bark.kt
+++ b/docs/exPuzzlers/src/_06_classy/_48_All_I_Get_Is_Static/Bark.kt
@@ -25,4 +25,4 @@ fun main(args : Array<String>) {
 //    nipper.bark()
     Dog.bark()
     Basenji.bark()
-}
\ No newline at end of file
+}
diff --git a/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/MyThing.java b/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/MyThing.java
new file mode 100644
index 00000000000..89a6cf15dab
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/MyThing.java
@@ -0,0 +1,24 @@
+package _06_classy._53_Do_Your_Thing;
+
+public class MyThing extends Thing {
+    private final int arg;
+
+    /*
+     * This constructor is illegal. Rewrite it so that it has the same
+     * effect but is legal.
+     */
+    public MyThing() {
+        this((int)System.currentTimeMillis());
+    }
+
+    /*
+    * This constructor is illegal. Rewrite it so that it has the same
+    * effect but is legal.
+    */
+    public MyThing(int arg) {
+        super(arg);
+        this.arg = arg;
+    }
+
+
+}
diff --git a/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/MyThing.kt b/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/MyThing.kt
new file mode 100644
index 00000000000..ff06e855549
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/MyThing.kt
@@ -0,0 +1,14 @@
+namespace `do`.your.thing
+
+import std.io.*
+import std.*
+import _06_classy._53_Do_Your_Thing.Thing
+
+class MyThing(val arg : Int) : Thing(arg) {
+
+}
+
+
+fun main(args : Array<String>) {
+    println(MyThing(10).arg)
+}
\ No newline at end of file
diff --git a/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/Thing.java b/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/Thing.java
new file mode 100644
index 00000000000..85111834f2e
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_53_Do_Your_Thing/Thing.java
@@ -0,0 +1,7 @@
+package _06_classy._53_Do_Your_Thing;
+
+// This is meant to represent a library class. You must not modify it.
+public class Thing {
+    public Thing(int i) {
+    }
+}
diff --git a/docs/exPuzzlers/src/_06_classy/_54_Null_and_Void/Null.java b/docs/exPuzzlers/src/_06_classy/_54_Null_and_Void/Null.java
new file mode 100644
index 00000000000..409aa3392c6
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_54_Null_and_Void/Null.java
@@ -0,0 +1,11 @@
+package _06_classy._54_Null_and_Void;
+
+public class Null {
+    public static void greet() {
+        System.out.println("Hello world!");
+    }
+
+    public static void main(String[] args) {
+        ((Null) null).greet();
+    } 
+}
diff --git a/docs/exPuzzlers/src/_06_classy/_54_Null_and_Void/Null.kt b/docs/exPuzzlers/src/_06_classy/_54_Null_and_Void/Null.kt
new file mode 100644
index 00000000000..e73e94f3f1e
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_54_Null_and_Void/Null.kt
@@ -0,0 +1,19 @@
+namespace `null`.and.void
+
+import std.io.*
+import std.*
+
+class Null() {
+    class object {
+        fun greet() {
+            println("Hello world!")
+        }
+    }
+}
+
+
+fun main(args : Array<String>) {
+// The problemati code does not compile:
+//    (null as Null).greet()
+    Null.greet()
+}
\ No newline at end of file
diff --git a/docs/exPuzzlers/src/_06_classy/_55_Creationism/BUG b/docs/exPuzzlers/src/_06_classy/_55_Creationism/BUG
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/docs/exPuzzlers/src/_06_classy/_55_Creationism/Creator.java b/docs/exPuzzlers/src/_06_classy/_55_Creationism/Creator.java
new file mode 100644
index 00000000000..1c6d57869bd
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_55_Creationism/Creator.java
@@ -0,0 +1,21 @@
+package _06_classy._55_Creationism;
+
+public class Creator {
+    public static void main(String[] args) {
+//        for (int i = 0; i < 100; i++)
+//            Creature creature = new Creature();
+        System.out.println(Creature.numCreated());
+    }
+}
+
+class Creature {
+    private static long numCreated = 0;
+
+    public Creature() {
+        numCreated++;
+    }
+
+    public static long numCreated() {
+        return numCreated;
+    }
+}
diff --git a/docs/exPuzzlers/src/_06_classy/_55_Creationism/Creator.kt b/docs/exPuzzlers/src/_06_classy/_55_Creationism/Creator.kt
new file mode 100644
index 00000000000..ca14d6e801a
--- /dev/null
+++ b/docs/exPuzzlers/src/_06_classy/_55_Creationism/Creator.kt
@@ -0,0 +1,21 @@
+namespace creationism
+
+import std.io.*
+import std.*
+
+class Creature() {
+    class object {
+        var numCreated = 0
+          private set
+    }
+
+    {
+//        Creature.numCreated++
+    }
+}
+
+
+fun main(args : Array<String>) {
+//    for (i in 1..100)
+//      val creature = Creature()
+}
\ No newline at end of file
diff --git a/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BUG b/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BUG
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BigProblem.java b/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BigProblem.java
new file mode 100644
index 00000000000..4c49110c285
--- /dev/null
+++ b/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BigProblem.java
@@ -0,0 +1,18 @@
+package _07_library._56_Big_Problem;
+
+import java.math.BigInteger;
+
+public class BigProblem {
+    public static void main(String[] args) {
+        BigInteger fiveThousand  = new BigInteger("5000");
+        BigInteger fiftyThousand = new BigInteger("50000");
+        BigInteger fiveHundredThousand
+                                 = new BigInteger("500000");
+
+        BigInteger total = BigInteger.ZERO;
+        total.add(fiveThousand);
+        total.add(fiftyThousand);
+        total.add(fiveHundredThousand);
+        System.out.println(total);
+    }
+}
diff --git a/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BigProblem.kt b/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BigProblem.kt
new file mode 100644
index 00000000000..815ffe9b105
--- /dev/null
+++ b/docs/exPuzzlers/src/_07_library/_56_Big_Problem/BigProblem.kt
@@ -0,0 +1,26 @@
+namespace big.problem
+
+import std.io.*
+import std.*
+import java.math.BigInteger
+
+fun main(args : Array<String>) {
+    val fiveThousand = "5000".bi()
+    val fiftyThousand = "50000".bi()
+    val fiveHundredThousand = "500000".bi()
+
+    val total : BigInteger = "0".bi()//BigInteger.ZERO
+    total + fiveThousand
+    total + fiftyThousand
+    total + fiveHundredThousand
+    println(total) // No surprise
+
+    var total1 : BigInteger = "0".bi()//BigInteger.ZERO
+    total1 += fiveThousand
+    total1 += fiftyThousand
+    total1 += fiveHundredThousand
+    println(total1) // Works
+}
+
+inline fun String.bi() : BigInteger = BigInteger(this)
+inline fun BigInteger.plus(other : BigInteger) = this add other
\ No newline at end of file
diff --git a/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/BUG b/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/BUG
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/Differences.java b/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/Differences.java
new file mode 100644
index 00000000000..3f2bc5cdc8f
--- /dev/null
+++ b/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/Differences.java
@@ -0,0 +1,15 @@
+package _07_library._59_Whats_the_Difference;
+
+import java.util.*;
+
+public class Differences {
+    public static void main(String[] args) {
+        int vals[] = { 789, 678, 567, 456, 345, 234, 123, 012 };
+        Set<Integer> diffs = new HashSet<Integer>();
+
+        for (int i = 0; i < vals.length; i++)
+            for (int j = i; j < vals.length; j++)
+                diffs.add(vals[i] - vals[j]);
+        System.out.println(diffs.size());
+    }
+}
diff --git a/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/Differences.kt b/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/Differences.kt
new file mode 100644
index 00000000000..c1afb5184f6
--- /dev/null
+++ b/docs/exPuzzlers/src/_07_library/_59_Whats_the_Difference/Differences.kt
@@ -0,0 +1,20 @@
+namespace whats.the.difference
+
+import std.io.*
+import std.*
+import java.util.*
+
+fun iarray(vararg a : Int) = a // BUG
+
+fun main(args : Array<String>) {
+    // Problematic code does not compile
+//    val vals = iarray(789, 678, 567, 456, 345, 234, 123, 012)
+    val vals = iarray(789, 678, 567, 456, 345, 234, 123, 12)
+    val diffs = HashSet<Int>
+    for (i in vals.indices)
+        for (j in i..vals.lastIndex())
+             diffs.add(vals[i] - vals[j])
+    println(diffs.size())
+}
+
+fun IntArray.lastIndex() = size - 1
\ No newline at end of file
diff --git a/idea/src/META-INF/plugin.xml b/idea/src/META-INF/plugin.xml
index e767fd35eb3..eadcca9d8bd 100644
--- a/idea/src/META-INF/plugin.xml
+++ b/idea/src/META-INF/plugin.xml
@@ -57,6 +57,9 @@
       <codeInsight.implementMethod language="jet" implementationClass="org.jetbrains.jet.plugin.codeInsight.ImplementMethodsHandler"/>
       <codeInsight.overrideMethod language="jet" implementationClass="org.jetbrains.jet.plugin.codeInsight.OverrideMethodsHandler"/>
 
-      <java.elementFinder implementation="org.jetbrains.jet.plugin.java.JavaElementFinder"/>
+ <!--     <java.elementFinder implementation="org.jetbrains.jet.plugin.java.JavaElementFinder"/>-->
+      <toolWindow id="CodeWindow"
+                  factoryClass="org.jetbrains.jet.plugin.internal.codewindow.BytecodeToolwindow$Factory"
+                  anchor="right"/>
   </extensions>
 </idea-plugin>
diff --git a/idea/src/org/jetbrains/jet/plugin/internal/codewindow/BytecodeToolwindow.java b/idea/src/org/jetbrains/jet/plugin/internal/codewindow/BytecodeToolwindow.java
new file mode 100644
index 00000000000..ad1f700d7fd
--- /dev/null
+++ b/idea/src/org/jetbrains/jet/plugin/internal/codewindow/BytecodeToolwindow.java
@@ -0,0 +1,252 @@
+/*
+ * @author max
+ */
+package org.jetbrains.jet.plugin.internal.codewindow;
+
+import com.intellij.ide.highlighter.JavaFileType;
+import com.intellij.openapi.application.Result;
+import com.intellij.openapi.command.WriteCommandAction;
+import com.intellij.openapi.editor.Document;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.EditorFactory;
+import com.intellij.openapi.editor.ScrollType;
+import com.intellij.openapi.editor.ex.EditorEx;
+import com.intellij.openapi.fileEditor.FileEditorManager;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.Comparing;
+import com.intellij.openapi.util.Pair;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.openapi.wm.ToolWindow;
+import com.intellij.openapi.wm.ToolWindowFactory;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.PsiManager;
+import com.intellij.ui.content.ContentFactory;
+import com.intellij.util.Alarm;
+import org.jetbrains.jet.codegen.ClassBuilderFactory;
+import org.jetbrains.jet.codegen.ClassFileFactory;
+import org.jetbrains.jet.codegen.GenerationState;
+import org.jetbrains.jet.lang.psi.JetFile;
+import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Scanner;
+
+public class BytecodeToolwindow extends JPanel {
+    private static final int UPDATE_DELAY = 500;
+    private final Editor myEditor;
+    private final Alarm myUpdateAlarm;
+    private Location myCurrentLocation;
+    private final Project myProject;
+
+
+    public BytecodeToolwindow(Project project) {
+        super(new BorderLayout());
+        myProject = project;
+        myEditor = EditorFactory.getInstance().createEditor(EditorFactory.getInstance().createDocument(""), project, JavaFileType.INSTANCE, true);
+        add(myEditor.getComponent());
+        myUpdateAlarm = new Alarm(Alarm.ThreadToUse.SWING_THREAD);
+        myUpdateAlarm.addRequest(new Runnable() {
+            @Override
+            public void run() {
+                myUpdateAlarm.addRequest(this, UPDATE_DELAY);
+                Location location = Location.fromEditor(FileEditorManager.getInstance(myProject).getSelectedTextEditor());
+                if (!Comparing.equal(location, myCurrentLocation)) {
+                    updateBytecode(location, myCurrentLocation);
+                    myCurrentLocation = location;
+                }
+            }
+        }, UPDATE_DELAY);
+    }
+
+    private void updateBytecode(Location location, Location oldLocation) {
+        Editor editor = location.editor;
+
+        if (editor == null) {
+            setText("");
+        }
+        else {
+            VirtualFile vFile = ((EditorEx) editor).getVirtualFile();
+            if (vFile == null) {
+                setText("");
+                return;
+            }
+
+            PsiFile psiFile = PsiManager.getInstance(myProject).findFile(vFile);
+            if (!(psiFile instanceof JetFile)) {
+                setText("");
+                return;
+            }
+
+            if (oldLocation == null || !Comparing.equal(oldLocation.editor, location.editor) || oldLocation.modificationStamp != location.modificationStamp) {
+                setText(generateToText((JetFile) psiFile));
+            }
+
+            Document document = editor.getDocument();
+            int startLine = document.getLineNumber(location.startOffset);
+            int endLine = document.getLineNumber(location.endOffset);
+            if (endLine > startLine && location.endOffset > 0 && document.getCharsSequence().charAt(location.endOffset - 1) == '\n') endLine--;
+
+            Document byteCodeDocument = myEditor.getDocument();
+            Pair<Integer, Integer> linesRange = mapLines(byteCodeDocument.getText(), startLine, endLine);
+
+            int startOffset = byteCodeDocument.getLineStartOffset(linesRange.first);
+            int endOffset = Math.min(byteCodeDocument.getLineStartOffset(linesRange.second + 1), byteCodeDocument.getTextLength());
+            myEditor.getCaretModel().moveToOffset(endOffset);
+            myEditor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE);
+            myEditor.getCaretModel().moveToOffset(startOffset);
+            myEditor.getScrollingModel().scrollToCaret(ScrollType.MAKE_VISIBLE);
+
+            myEditor.getSelectionModel().setSelection(startOffset,
+                                                      endOffset);
+        }
+    }
+
+    private static Pair<Integer, Integer> mapLines(String text, int startLine, int endLine) {
+        int byteCodeLine = 0;
+        int byteCodeStartLine = -1;
+        int byteCodeEndLine = -1;
+
+        List<Integer> lines = new ArrayList<Integer>();
+        for (String line : text.split("\n")) {
+            line = line.trim();
+
+            if (line.startsWith("LINENUMBER")) {
+                int ktLineNum = new Scanner(line.substring("LINENUMBER".length())).nextInt() - 1;
+                lines.add(ktLineNum);
+            }
+        }
+        Collections.sort(lines);
+
+        for (Integer line : lines) {
+            if (line >= startLine) {
+                startLine = line;
+                break;
+            }
+        }
+        
+        for (String line : text.split("\n")) {
+            line = line.trim();
+
+            if (line.startsWith("LINENUMBER")) {
+                int ktLineNum = new Scanner(line.substring("LINENUMBER".length())).nextInt() - 1;
+
+                if (byteCodeStartLine < 0 && ktLineNum == startLine) {
+                    byteCodeStartLine = byteCodeLine;
+                }
+
+                if (byteCodeStartLine > 0&& ktLineNum > endLine) {
+                    byteCodeEndLine = byteCodeLine - 1;
+                    break;
+                }
+            }
+
+            if (byteCodeStartLine >= 0 && (line.startsWith("MAXSTACK") || line.startsWith("LOCALVARIABLE") || line.isEmpty())) {
+                byteCodeEndLine = byteCodeLine - 1;
+                break;
+            }
+
+
+            byteCodeLine++;
+        }
+
+
+
+        if (byteCodeStartLine == -1 || byteCodeEndLine == -1) {
+            return new Pair<Integer, Integer>(0, 0);
+        }
+        else {
+            return new Pair<Integer, Integer>(byteCodeStartLine, byteCodeEndLine);
+        }
+
+    }
+
+    private void setText(final String text) {
+        new WriteCommandAction(myProject) {
+            @Override
+            protected void run(Result result) throws Throwable {
+                myEditor.getDocument().setText(text);
+            }
+        }.execute();
+    }
+
+    protected String generateToText(JetFile file) {
+        GenerationState state = new GenerationState(myProject, ClassBuilderFactory.TEXT);
+        try {
+            AnalyzingUtils.checkForSyntacticErrors(file);
+            state.compile(file);
+        } catch (Exception e) {
+            StringWriter out = new StringWriter(1024);
+            e.printStackTrace(new PrintWriter(out));
+            return out.toString();
+        }
+
+
+        StringBuilder answer = new StringBuilder();
+
+        final ClassFileFactory factory = state.getFactory();
+        for (String filename : factory.files()) {
+            answer.append("// ================ ");
+            answer.append(filename);
+            answer.append(" =================\n");
+            answer.append(factory.asText(filename)).append("\n\n");
+        }
+
+        return answer.toString();
+    }
+    
+
+    public static class Factory implements ToolWindowFactory {
+        @Override
+        public void createToolWindowContent(Project project, ToolWindow toolWindow) {
+            toolWindow.getContentManager().addContent(ContentFactory.SERVICE.getInstance().createContent(new BytecodeToolwindow(project), "", false));
+        }
+    }
+    
+    private static class Location {
+        final Editor editor;
+        final long modificationStamp;
+        final int startOffset;
+        final int endOffset;
+
+        private Location(Editor editor) {
+            this.editor = editor;
+            modificationStamp = editor != null ? editor.getDocument().getModificationStamp() : 0;
+            startOffset = editor != null ? editor.getSelectionModel().getSelectionStart() : 0;
+            endOffset = editor != null ? editor.getSelectionModel().getSelectionEnd() : 0;
+        }
+
+        public static Location fromEditor(Editor editor) {
+            return new Location(editor);
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (!(o instanceof Location)) return false;
+
+            Location location = (Location) o;
+
+            if (endOffset != location.endOffset) return false;
+            if (modificationStamp != location.modificationStamp) return false;
+            if (startOffset != location.startOffset) return false;
+            if (editor != null ? !editor.equals(location.editor) : location.editor != null) return false;
+
+            return true;
+        }
+
+        @Override
+        public int hashCode() {
+            int result = editor != null ? editor.hashCode() : 0;
+            result = 31 * result + (int) (modificationStamp ^ (modificationStamp >>> 32));
+            result = 31 * result + startOffset;
+            result = 31 * result + endOffset;
+            return result;
+        }
+    }    
+}
diff --git a/idea/testData/checker/RecursiveTypeInference.jet b/idea/testData/checker/RecursiveTypeInference.jet
index a73cf01cc0e..c8e0006f350 100644
--- a/idea/testData/checker/RecursiveTypeInference.jet
+++ b/idea/testData/checker/RecursiveTypeInference.jet
@@ -1,19 +1,19 @@
 namespace a {
-    val foo = <error>bar()</error>
+    val foo = <error descr="[TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM] Type checking has run into a recursive problem">bar()</error>
 
     fun bar() = foo
 }
 
 namespace b {
-    fun foo() = <error>bar()</error>
+    fun foo() = bar()
 
-    fun bar() = foo()
+    fun bar() = <error descr="[TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM] Type checking has run into a recursive problem">foo()</error>
 }
 
 namespace c {
-    fun bazz() = <error>bar()</error>
+    fun bazz() = bar()
 
-    fun foo() = bazz()
+    fun foo() = <error descr="[TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM] Type checking has run into a recursive problem">bazz()</error>
 
     fun bar() = foo()
 }
@@ -39,4 +39,4 @@ namespace ok {
 
         fun bar() = foo()
     }
-}
\ No newline at end of file
+}
diff --git a/stdlib/ktSrc/StandardLibrary.kt b/stdlib/ktSrc/StandardLibrary.kt
index 3fc3bffbcf0..53d594e313a 100644
--- a/stdlib/ktSrc/StandardLibrary.kt
+++ b/stdlib/ktSrc/StandardLibrary.kt
@@ -1,5 +1,15 @@
 namespace std
 
+namespace util {
+    import java.util.*
+
+    val <T> Collection<T>.size : Int
+        get() = size()
+
+    val <T> Collection<T>.empty : Boolean
+        get() = isEmpty()
+}
+
 namespace io {
     import java.io.*
     import java.nio.charset.*
@@ -30,7 +40,15 @@ namespace io {
     val ByteArray.inputStream : ByteArrayInputStream
         get() = ByteArrayInputStream(this)
 
-    inline fun ByteArray.inputStream(offset: Int, length: Int) : ByteArrayInputStream = ByteArrayInputStream(this, offset, length)
+//    inline fun ByteArray.inputStream(offset: Int, length: Int) = ByteArrayInputStream(this, offset, length)
+
+    fun InputStream.iterator() : ByteIterator =
+        object: ByteIterator() {
+            override val hasNext : Boolean
+                get() = available() > 0
+
+            override fun nextByte() = read().byt
+        }
 
     val InputStream.buffered : BufferedInputStream
         get() = if(this is BufferedInputStream) this else BufferedInputStream(this)
@@ -40,8 +58,8 @@ namespace io {
     val InputStream.reader : InputStreamReader
         get() = InputStreamReader(this)
 
-//    val InputStream.bufferedReader : BufferedReader
-//        get() = buffered.reader
+    val InputStream.bufferedReader : BufferedReader
+        get() = BufferedReader(reader)
 
 /*
     inline fun InputStream.reader(charset: Charset) : InputStreamReader  = InputStreamReader(this, charset)
@@ -53,18 +71,13 @@ namespace io {
     inline fun InputStream.reader(charsetDecoder: CharsetDecoder) = InputStreamReader(this, charsetDecoder)
 */
 
-    fun InputStream.iterator() : ByteIterator = object: ByteIterator() {
-        override val hasNext : Boolean
-            get() = available() > 0
-
-        override fun nextByte() = read().byt
-    }
-
 //    val Reader.buffered : BufferedReader
 //        get() = if(this instanceof BufferedReader) this else BufferedReader(this)
 
 //    inline fun Reader.buffered(bufferSize: Int) = BufferedReader(this, bufferSize)
 
+//    val String.reader = StringReader(this)
+
     private val stdin : BufferedReader = BufferedReader(InputStreamReader(object : InputStream() {
         override fun read() : Int {
             return System.`in`?.read() ?: -1