diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/CallableMethod.java b/compiler/backend/src/org/jetbrains/jet/codegen/CallableMethod.java
index 74a523bbe39..8f284c416fc 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/CallableMethod.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/CallableMethod.java
@@ -81,9 +81,14 @@ public class CallableMethod implements Callable {
     public void invokeWithDefault(InstructionAdapter v, int mask) {
         v.iconst(mask);
         String desc = getSignature().getDescriptor().replace(")", "I)");
-        if(getInvokeOpcode() != Opcodes.INVOKESTATIC)
-            desc = desc.replace("(", "(L" + getOwner() + ";");
-        v.visitMethodInsn(Opcodes.INVOKESTATIC, getInvokeOpcode() == Opcodes.INVOKEINTERFACE ? getOwner() + "$$TImpl" : getOwner(), getSignature().getName() + "$default", desc);
+        if("<init>".equals(getSignature().getName())) {
+            v.visitMethodInsn(Opcodes.INVOKESPECIAL, getOwner(), "<init>", desc);
+        }
+        else {
+            if(getInvokeOpcode() != Opcodes.INVOKESTATIC)
+                desc = desc.replace("(", "(L" + getOwner() + ";");
+            v.visitMethodInsn(Opcodes.INVOKESTATIC, getInvokeOpcode() == Opcodes.INVOKEINTERFACE ? getOwner() + "$$TImpl" : getOwner(), getSignature().getName() + "$default", desc);
+        }
     }
 
     public boolean isNeedsThis() {
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/CodegenContext.java b/compiler/backend/src/org/jetbrains/jet/codegen/CodegenContext.java
index 11c1bf1c810..a5d3447e98c 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/CodegenContext.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/CodegenContext.java
@@ -124,15 +124,17 @@ public abstract class CodegenContext {
         return new ClosureContext(funDescriptor, classDescriptor, this, closureCodegen, internalClassName);
     }
 
-    public FrameMap prepareFrame() {
+    public FrameMap prepareFrame(JetTypeMapper mapper) {
         FrameMap frameMap = new FrameMap();
 
         if (getContextKind() != OwnerKind.NAMESPACE) {
             frameMap.enterTemp();  // 0 slot for this
         }
 
-        if (getReceiverDescriptor() != null) {
-            frameMap.enterTemp();  // Next slot for fake this
+        CallableDescriptor receiverDescriptor = getReceiverDescriptor();
+        if (receiverDescriptor != null) {
+            Type type = mapper.mapType(receiverDescriptor.getReceiverParameter().getType());
+            frameMap.enterTemp(type.getSize());  // Next slot for fake this
         }
 
         return frameMap;
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/FunctionCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/FunctionCodegen.java
index 2969bed7be7..a51e784419a 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/FunctionCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/FunctionCodegen.java
@@ -1,6 +1,7 @@
 package org.jetbrains.jet.codegen;
 
 import com.intellij.psi.PsiElement;
+import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.descriptors.*;
 import org.jetbrains.jet.lang.psi.*;
 import org.jetbrains.jet.lang.resolve.BindingContext;
@@ -26,17 +27,19 @@ public class FunctionCodegen {
     private final CodegenContext owner;
     private final ClassBuilder v;
     private final GenerationState state;
+    private final JetTypeMapper typeMapper;
 
     public FunctionCodegen(CodegenContext owner, ClassBuilder v, GenerationState state) {
         this.owner = owner;
         this.v = v;
         this.state = state;
+        typeMapper = state.getTypeMapper();
     }
 
     public void gen(JetNamedFunction f) {
         final FunctionDescriptor functionDescriptor = state.getBindingContext().get(BindingContext.FUNCTION, f);
         assert functionDescriptor != null;
-        Method method = state.getTypeMapper().mapToCallableMethod(functionDescriptor, false, owner.getContextKind()).getSignature();
+        Method method = typeMapper.mapToCallableMethod(functionDescriptor, false, owner.getContextKind()).getSignature();
         generateMethod(f, method, functionDescriptor);
     }
 
@@ -59,21 +62,57 @@ public class FunctionCodegen {
 
         OwnerKind kind = context.getContextKind();
 
+        ReceiverDescriptor expectedThisObject = functionDescriptor.getExpectedThisObject();
+        ReceiverDescriptor receiverParameter = functionDescriptor.getReceiverParameter();
+
         if (kind != OwnerKind.TRAIT_IMPL || bodyExpressions != null) {
+            boolean isStatic = kind == OwnerKind.NAMESPACE;
+            if (isStatic || kind == OwnerKind.TRAIT_IMPL)
+                flags |= ACC_STATIC;
 
-            boolean isStatic = kind == OwnerKind.NAMESPACE || kind == OwnerKind.TRAIT_IMPL;
-            if (isStatic) flags |= ACC_STATIC;
-
-            boolean isAbstract = !isStatic && (bodyExpressions == null || CodegenUtil.isInterface(functionDescriptor.getContainingDeclaration()));
+            boolean isAbstract = !isStatic && !(kind == OwnerKind.TRAIT_IMPL) && (bodyExpressions == null || CodegenUtil.isInterface(functionDescriptor.getContainingDeclaration()));
             if (isAbstract) flags |= ACC_ABSTRACT;
 
             final MethodVisitor mv = v.newMethod(fun, flags, jvmSignature.getName(), jvmSignature.getDescriptor(), null, null);
-            if(kind != OwnerKind.TRAIT_IMPL && v.generateCode()) {
-                int start = functionDescriptor.getReceiverParameter().exists() ? 1 : 0;
+            if(v.generateCode()) {
+                int start = 0;
+                if(kind != OwnerKind.TRAIT_IMPL) {
+                    AnnotationVisitor av = mv.visitAnnotation("Ljet/typeinfo/JetMethod;", true);
+                    if(functionDescriptor.getReturnType().isNullable()) {
+                        av.visit("nullableReturnType", true);
+                    }
+                    av.visitEnd();
+                }
+
+                if(kind == OwnerKind.TRAIT_IMPL) {
+                    AnnotationVisitor av = mv.visitParameterAnnotation(start++, "Ljet/typeinfo/JetParameter;", true);
+                    av.visit("value", "this$self");
+                    av.visitEnd();
+                }
+                if(receiverParameter.exists()) {
+                    AnnotationVisitor av = mv.visitParameterAnnotation(start++, "Ljet/typeinfo/JetParameter;", true);
+                    av.visit("value", "this$receiver");
+                    if(receiverParameter.getType().isNullable()) {
+                        av.visit("nullable", true);
+                    }
+                    av.visitEnd();
+                }
+                for (final TypeParameterDescriptor typeParameterDescriptor : typeParameters) {
+                    AnnotationVisitor av = mv.visitParameterAnnotation(start++, "Ljet/typeinfo/JetTypeParameter;", true);
+                    av.visit("value", typeParameterDescriptor.getName());
+                    av.visitEnd();
+                }
                 for(int i = 0; i != paramDescrs.size(); ++i) {
-                    AnnotationVisitor annotationVisitor = mv.visitParameterAnnotation(i + start, "Ljet/typeinfo/JetParameterName;", true);
-                    annotationVisitor.visit("value", paramDescrs.get(i).getName());
-                    annotationVisitor.visitEnd();
+                    AnnotationVisitor av = mv.visitParameterAnnotation(i + start, "Ljet/typeinfo/JetParameter;", true);
+                    ValueParameterDescriptor parameterDescriptor = paramDescrs.get(i);
+                    av.visit("value", parameterDescriptor.getName());
+                    if(parameterDescriptor.hasDefaultValue()) {
+                        av.visit("hasDefaultValue", true);
+                    }
+                    if(parameterDescriptor.getOutType().isNullable()) {
+                        av.visit("nullable", true);
+                    }
+                    av.visitEnd();
                 }
             }
             if (!isAbstract && v.generateCode()) {
@@ -82,12 +121,18 @@ public class FunctionCodegen {
                 Label methodBegin = new Label();
                 mv.visitLabel(methodBegin);
                 
-                FrameMap frameMap = context.prepareFrame();
+                FrameMap frameMap = context.prepareFrame(typeMapper);
 
                 ExpressionCodegen codegen = new ExpressionCodegen(mv, frameMap, jvmSignature.getReturnType(), context, state);
 
                 Type[] argTypes = jvmSignature.getArgumentTypes();
-                int add = functionDescriptor.getReceiverParameter().exists() ? state.getTypeMapper().mapType(functionDescriptor.getReceiverParameter().getType()).getSize() : 0;
+                int add = 0;
+
+                if(kind == OwnerKind.TRAIT_IMPL)
+                    add++;
+
+                if(receiverParameter.exists())
+                    add++;
 
                 for (final TypeParameterDescriptor typeParameterDescriptor : typeParameters) {
                     int slot = frameMap.enterTemp();
@@ -114,9 +159,9 @@ public class FunctionCodegen {
                 }
                 else {
                     for (ValueParameterDescriptor parameter : paramDescrs) {
-                        Type sharedVarType = state.getTypeMapper().getSharedVarType(parameter);
-                        Type localVarType = state.getTypeMapper().mapType(parameter.getOutType());
+                        Type sharedVarType = typeMapper.getSharedVarType(parameter);
                         if (sharedVarType != null) {
+                            Type localVarType = typeMapper.mapType(parameter.getOutType());
                             int index = frameMap.getIndex(parameter);
                             mv.visitTypeInsn(NEW, sharedVarType.getInternalName());
                             mv.visitInsn(DUP);
@@ -134,13 +179,30 @@ public class FunctionCodegen {
                 Label methodEnd = new Label();
                 mv.visitLabel(methodEnd);
 
-                // http://youtrack.jetbrains.net/issue/KT-746
-                // Fill LocalVariableTable with method parameter names
-                for (int i = 0; i < paramDescrs.size(); i++) {
-                    ValueParameterDescriptor parameter = paramDescrs.get(i);
-                    Type type = state.getTypeMapper().mapType(parameter.getOutType());
+                int k = 0;
+
+                if(expectedThisObject.exists()) {
+                    Type type = typeMapper.mapType(expectedThisObject.getType());
                     // TODO: specify signature
-                    mv.visitLocalVariable(parameter.getName(), type.getDescriptor(), null, methodBegin, methodEnd, i + add);
+                    mv.visitLocalVariable("this", type.getDescriptor(), null, methodBegin, methodEnd, k++);
+                }
+
+                if(receiverParameter.exists()) {
+                    Type type = typeMapper.mapType(receiverParameter.getType());
+                    // TODO: specify signature
+                    mv.visitLocalVariable("this$receiver", type.getDescriptor(), null, methodBegin, methodEnd, k);
+                    k += type.getSize();
+                }
+
+                for (final TypeParameterDescriptor typeParameterDescriptor : typeParameters) {
+                    mv.visitLocalVariable(typeParameterDescriptor.getName(), JetTypeMapper.TYPE_TYPEINFO.getDescriptor(), null, methodBegin, methodEnd, k++);
+                }
+
+                for (ValueParameterDescriptor parameter : paramDescrs) {
+                    Type type = typeMapper.mapType(parameter.getOutType());
+                    // TODO: specify signature
+                    mv.visitLocalVariable(parameter.getName(), type.getDescriptor(), null, methodBegin, methodEnd, k);
+                    k += type.getSize();
                 }
 
                 mv.visitMaxs(0, 0);
@@ -164,7 +226,7 @@ public class FunctionCodegen {
         }
     }
 
-    static void generateDefaultIfNeeded(CodegenContext.MethodContext owner, GenerationState state, ClassBuilder v, Method jvmSignature, FunctionDescriptor functionDescriptor, OwnerKind kind) {
+    static void generateDefaultIfNeeded(CodegenContext.MethodContext owner, GenerationState state, ClassBuilder v, Method jvmSignature, @Nullable FunctionDescriptor functionDescriptor, OwnerKind kind) {
         DeclarationDescriptor contextClass = owner.getContextDescriptor().getContainingDeclaration();
 
         if(kind != OwnerKind.TRAIT_IMPL) {
@@ -180,15 +242,18 @@ public class FunctionCodegen {
         }
 
         boolean needed = false;
-        for (ValueParameterDescriptor parameterDescriptor : functionDescriptor.getValueParameters()) {
-            if(parameterDescriptor.hasDefaultValue()) {
-                needed = true;
-                break;
+        if(functionDescriptor != null) {
+            for (ValueParameterDescriptor parameterDescriptor : functionDescriptor.getValueParameters()) {
+                if(parameterDescriptor.hasDefaultValue()) {
+                    needed = true;
+                    break;
+                }
             }
         }
 
         if(needed) {
-            boolean hasReceiver = functionDescriptor.getReceiverParameter().exists();
+            ReceiverDescriptor receiverParameter = functionDescriptor.getReceiverParameter();
+            boolean hasReceiver = receiverParameter.exists();
             boolean isStatic = kind == OwnerKind.NAMESPACE;
 
             if(kind == OwnerKind.TRAIT_IMPL) {
@@ -203,46 +268,42 @@ public class FunctionCodegen {
                                        state.getTypeMapper().mapType(((ClassDescriptor) contextClass).getDefaultType(), OwnerKind.IMPLEMENTATION).getInternalName();
 
             String descriptor = jvmSignature.getDescriptor().replace(")","I)");
-            if(!isStatic)
+            boolean isConstructor = "<init>".equals(jvmSignature.getName());
+            if(!isStatic && !isConstructor)
                 descriptor = descriptor.replace("(","(L" + ownerInternalName + ";");
-            final MethodVisitor mv = v.newMethod(null, flags | ACC_STATIC, jvmSignature.getName() + "$default", descriptor, null, null);
+            final MethodVisitor mv = v.newMethod(null, flags | (isConstructor ? 0 : ACC_STATIC), isConstructor ? "<init>" : jvmSignature.getName() + "$default", descriptor, null, null);
             InstructionAdapter iv = new InstructionAdapter(mv);
             if (v.generateCode()) {
                 mv.visitCode();
 
-                FrameMap frameMap = owner.prepareFrame();
+                FrameMap frameMap = owner.prepareFrame(state.getTypeMapper());
 
                 ExpressionCodegen codegen = new ExpressionCodegen(mv, frameMap, jvmSignature.getReturnType(), owner, state);
 
                 int var = 0;
                 if(!isStatic) {
-                    frameMap.enterTemp();
                     var++;
                 }
 
+                Type receiverType = receiverParameter.exists() ? state.getTypeMapper().mapType(receiverParameter.getType()) : Type.DOUBLE_TYPE;
                 if(hasReceiver) {
-                    frameMap.enterTemp();
-                    var++;
+                    var += receiverType.getSize();
                 }
 
                 List<TypeParameterDescriptor> typeParameters = functionDescriptor.getTypeParameters();
                 for (final TypeParameterDescriptor typeParameterDescriptor : typeParameters) {
-                    int slot = frameMap.enterTemp();
-                    codegen.addTypeParameter(typeParameterDescriptor, StackValue.local(slot, JetTypeMapper.TYPE_TYPEINFO));
-                    var++;
+                    if(typeParameterDescriptor.isReified()) {
+                        codegen.addTypeParameter(typeParameterDescriptor, StackValue.local(var++, JetTypeMapper.TYPE_TYPEINFO));
+                    }
                 }
 
                 Type[] argTypes = jvmSignature.getArgumentTypes();
                 List<ValueParameterDescriptor> paramDescrs = functionDescriptor.getValueParameters();
                 for (int i = 0; i < paramDescrs.size(); i++) {
-                    ValueParameterDescriptor parameter = paramDescrs.get(i);
                     int size = argTypes[i + (hasReceiver ? 1 : 0)].getSize();
                     var += size;
-                    frameMap.enter(parameter, size);
                 }
 
-                frameMap.enterTemp();
-
                 int maskIndex = var;
 
                 var = 0;
@@ -251,7 +312,8 @@ public class FunctionCodegen {
                 }
 
                 if(hasReceiver) {
-                    mv.visitVarInsn(ALOAD, var++); // todo - Long etc.
+                    iv.load(var, receiverType);
+                    var += receiverType.getSize();
                 }
 
                 int extra = hasReceiver ? 1 : 0;
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java b/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java
index c3fe305c016..d9a6678e5f2 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java
@@ -269,7 +269,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
 
         CodegenContext.ConstructorContext constructorContext = context.intoConstructor(constructorDescriptor);
 
-        Method method;
+        Method constructorMethod;
         CallableMethod callableMethod;
         if (constructorDescriptor == null) {
             List<Type> parameterTypes = new ArrayList<Type>();
@@ -282,17 +282,17 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
                 parameterTypes.add(JetTypeMapper.TYPE_TYPEINFO);
             }
 
-            method = new Method("<init>", Type.VOID_TYPE, parameterTypes.toArray(new Type[parameterTypes.size()]));
-            callableMethod = new CallableMethod("", method, Opcodes.INVOKESPECIAL, Collections.<Type>emptyList());
+            constructorMethod = new Method("<init>", Type.VOID_TYPE, parameterTypes.toArray(new Type[parameterTypes.size()]));
+            callableMethod = new CallableMethod("", constructorMethod, Opcodes.INVOKESPECIAL, Collections.<Type>emptyList());
         }
         else {
             callableMethod = typeMapper.mapToCallableMethod(constructorDescriptor, kind);
-            method = callableMethod.getSignature();
+            constructorMethod = callableMethod.getSignature();
         }
 
         ObjectOrClosureCodegen closure = context.closure;
         if(closure != null) {
-            final List<Type> consArgTypes = new LinkedList<Type>(Arrays.asList(method.getArgumentTypes()));
+            final List<Type> consArgTypes = new LinkedList<Type>(Arrays.asList(constructorMethod.getArgumentTypes()));
 
             int insert = 0;
             if(closure.captureThis) {
@@ -319,11 +319,11 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
                 }
             }
 
-            method = new Method("<init>", Type.VOID_TYPE, consArgTypes.toArray(new Type[consArgTypes.size()]));
+            constructorMethod = new Method("<init>", Type.VOID_TYPE, consArgTypes.toArray(new Type[consArgTypes.size()]));
         }
 
         int flags = Opcodes.ACC_PUBLIC; // TODO
-        final MethodVisitor mv = v.newMethod(myClass, flags, "<init>", method.getDescriptor(), null, null);
+        final MethodVisitor mv = v.newMethod(myClass, flags, "<init>", constructorMethod.getDescriptor(), null, null);
         if (!v.generateCode()) return;
         
         mv.visitCode();
@@ -470,6 +470,8 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
         mv.visitInsn(Opcodes.RETURN);
         mv.visitMaxs(0, 0);
         mv.visitEnd();
+
+        FunctionCodegen.generateDefaultIfNeeded(constructorContext, state, v, constructorMethod, constructorDescriptor, OwnerKind.IMPLEMENTATION );
     }
 
     private void generateTraitMethods(ExpressionCodegen codegen) {
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java b/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java
index 5ad68c7182d..da8f91a181f 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/JetTypeMapper.java
@@ -348,9 +348,6 @@ public class JetTypeMapper {
         final JetType receiverType = !receiverTypeRef.exists() ? null : receiverTypeRef.getType();
         final List<ValueParameterDescriptor> parameters = f.getValueParameters();
         List<Type> parameterTypes = new ArrayList<Type>();
-        if (receiverType != null) {
-            parameterTypes.add(mapType(receiverType));
-        }
         if(kind == OwnerKind.TRAIT_IMPL) {
             ClassDescriptor containingDeclaration = (ClassDescriptor) f.getContainingDeclaration();
             JetType jetType = TraitImplBodyCodegen.getSuperClass(containingDeclaration, bindingContext);
@@ -362,6 +359,9 @@ public class JetTypeMapper {
             valueParameterTypes.add(type);
             parameterTypes.add(type);
         }
+        if (receiverType != null) {
+            parameterTypes.add(mapType(receiverType));
+        }
         for (TypeParameterDescriptor parameterDescriptor : f.getTypeParameters()) {
             if(parameterDescriptor.isReified()) {
                 parameterTypes.add(TYPE_TYPEINFO);
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/SignatureUtil.java b/compiler/backend/src/org/jetbrains/jet/codegen/SignatureUtil.java
index 2bcfbc5804d..72d2ae08868 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/SignatureUtil.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/SignatureUtil.java
@@ -10,6 +10,7 @@ import org.jetbrains.jet.lang.resolve.BindingContext;
 import org.jetbrains.jet.lang.types.JetType;
 import org.jetbrains.jet.lang.types.TypeProjection;
 import org.jetbrains.jet.lang.types.Variance;
+import org.objectweb.asm.Type;
 
 import java.util.List;
 
@@ -17,6 +18,9 @@ import java.util.List;
  * @author alex.tkachman
  */
 public class SignatureUtil {
+    private SignatureUtil() {
+    }
+
     public static String classToSignature(JetClass type, BindingContext bindingContext, JetTypeMapper typeMapper) {
         StringBuilder sb = new StringBuilder();
         genTypeParams(type, sb);
@@ -33,7 +37,7 @@ public class SignatureUtil {
         DeclarationDescriptor descriptor = jetType.getConstructor().getDeclarationDescriptor();
         if(descriptor instanceof ClassDescriptor) {
             JetType defaultType = ((ClassDescriptor) descriptor).getDefaultType();
-            org.objectweb.asm.Type type = typeMapper.mapType(defaultType, OwnerKind.IMPLEMENTATION);
+            Type type = typeMapper.mapType(defaultType, OwnerKind.IMPLEMENTATION);
             if(JetTypeMapper.isPrimitive(type)) {
                 type = JetTypeMapper.boxType(type);
             }
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/BinaryOp.java b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/BinaryOp.java
index e813857f0de..1255b108ef2 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/BinaryOp.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/BinaryOp.java
@@ -5,6 +5,7 @@ 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.Opcodes;
 import org.objectweb.asm.Type;
 import org.objectweb.asm.commons.InstructionAdapter;
 
@@ -31,11 +32,11 @@ public class BinaryOp implements IntrinsicMethod {
             if (receiver != null) {
                 receiver.put(expectedType, v);
             }
-            codegen.gen(arguments.get(0), expectedType);
+            codegen.gen(arguments.get(0), shift() ? Type.INT_TYPE : expectedType);
         }
         else {
             codegen.gen(arguments.get(0), expectedType);
-            codegen.gen(arguments.get(1), expectedType);
+            codegen.gen(arguments.get(1), shift() ? Type.INT_TYPE : expectedType);
         }
         v.visitInsn(expectedType.getOpcode(opcode));
 
@@ -44,4 +45,8 @@ public class BinaryOp implements IntrinsicMethod {
         }
         return StackValue.onStack(expectedType);
     }
+
+    private boolean shift() {
+        return opcode == Opcodes.ISHL || opcode == Opcodes.ISHR || opcode == Opcodes.IUSHR;
+    }
 }
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/RangeTo.java b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/RangeTo.java
index 86850d21051..ac46bd31b60 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/RangeTo.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/RangeTo.java
@@ -18,16 +18,24 @@ import java.util.List;
 public class RangeTo implements IntrinsicMethod {
     @Override
     public StackValue generate(ExpressionCodegen codegen, InstructionAdapter v, Type expectedType, PsiElement element, List<JetExpression> arguments, StackValue receiver) {
-        JetBinaryExpression expression = (JetBinaryExpression) element;
-        final Type leftType = codegen.expressionType(expression.getLeft());
-        if (JetTypeMapper.isIntPrimitive(leftType)) {
-            codegen.gen(expression.getLeft(), Type.INT_TYPE);
-            codegen.gen(expression.getRight(), Type.INT_TYPE);
+        if(arguments.size()==1) {
+            receiver.put(Type.INT_TYPE, v);
+            codegen.gen(arguments.get(0), Type.INT_TYPE);
             v.invokestatic("jet/IntRange", "rangeTo", "(II)Ljet/IntRange;");
             return StackValue.onStack(JetTypeMapper.TYPE_INT_RANGE);
         }
         else {
-            throw new UnsupportedOperationException("ranges are only supported for int objects");
+            JetBinaryExpression expression = (JetBinaryExpression) element;
+            final Type leftType = codegen.expressionType(expression.getLeft());
+            if (JetTypeMapper.isIntPrimitive(leftType)) {
+                codegen.gen(expression.getLeft(), Type.INT_TYPE);
+                codegen.gen(expression.getRight(), Type.INT_TYPE);
+                v.invokestatic("jet/IntRange", "rangeTo", "(II)Ljet/IntRange;");
+                return StackValue.onStack(JetTypeMapper.TYPE_INT_RANGE);
+            }
+            else {
+                throw new UnsupportedOperationException("ranges are only supported for int objects");
+            }
         }
     }
 }
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetTypeReference.java b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetTypeReference.java
index faf32b925fd..8dc33d8aa50 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetTypeReference.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetTypeReference.java
@@ -10,6 +10,9 @@ import java.util.Collections;
 import java.util.List;
 
 /**
+ * Type reference element.
+ * Underlying token is {@link org.jetbrains.jet.JetNodeTypes#TYPE_REFERENCE}
+ *
  * @author max
  */
 public class JetTypeReference extends JetElement {
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContext.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContext.java
index 5a14b835dad..5e8557fd62a 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContext.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContext.java
@@ -41,11 +41,15 @@ public interface BindingContext {
     WritableSlice<JetExpression, ResolvedCall<FunctionDescriptor>> INDEXED_LVALUE_SET = Slices.createSimpleSlice();
 
     WritableSlice<JetExpression, JetType> AUTOCAST = Slices.createSimpleSlice();
+
+    /** A scope where type of expression has been resolved */
     WritableSlice<JetExpression, JetScope> RESOLUTION_SCOPE = Slices.createSimpleSlice();
 
     WritableSlice<JetExpression, Boolean> VARIABLE_REASSIGNMENT = Slices.createSimpleSetSlice();
     WritableSlice<ValueParameterDescriptor, Boolean> AUTO_CREATED_IT = Slices.createSimpleSetSlice();
     WritableSlice<JetExpression, DeclarationDescriptor> VARIABLE_ASSIGNMENT = Slices.createSimpleSlice();
+
+    /** Has type of current expression has been already resolved */
     WritableSlice<JetExpression, Boolean> PROCESSED = Slices.createSimpleSetSlice();
     WritableSlice<JetElement, Boolean> STATEMENT = Slices.createRemovableSetSlice();
     WritableSlice<CallableMemberDescriptor, Boolean> DELEGATED = Slices.createRemovableSetSlice();
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeResolver.java b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeResolver.java
index 654135be994..8896830d305 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeResolver.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeResolver.java
@@ -49,11 +49,14 @@ public class TypeResolver {
         JetTypeElement typeElement = typeReference.getTypeElement();
         JetType type = resolveTypeElement(scope, annotations, typeElement, false);
         trace.record(BindingContext.TYPE, typeReference, type);
+
         return type;
     }
 
     @NotNull
-    private JetType resolveTypeElement(final JetScope scope, final List<AnnotationDescriptor> annotations, JetTypeElement typeElement, final boolean nullable) {
+    private JetType resolveTypeElement(final JetScope scope, final List<AnnotationDescriptor> annotations,
+                                       JetTypeElement typeElement, final boolean nullable) {
+
         final JetType[] result = new JetType[1];
         if (typeElement != null) {
             typeElement.accept(new JetVisitorVoid() {
@@ -70,6 +73,7 @@ public class TypeResolver {
                         resolveTypeProjections(scope, ErrorUtils.createErrorType("No type").getConstructor(), type.getTypeArguments());
                         return;
                     }
+
                     if (classifierDescriptor instanceof TypeParameterDescriptor) {
                         TypeParameterDescriptor typeParameterDescriptor = (TypeParameterDescriptor) classifierDescriptor;
 
@@ -268,6 +272,8 @@ public class TypeResolver {
         ClassifierDescriptor classifierDescriptor;
         if (userType.isAbsoluteInRootNamespace()) {
             classifierDescriptor = JetModuleUtil.getRootNamespaceType(userType).getMemberScope().getClassifier(referencedName);
+            trace.record(BindingContext.RESOLUTION_SCOPE, userType.getReferenceExpression(),
+                         JetModuleUtil.getRootNamespaceType(userType).getMemberScope());
         }
         else {
             JetUserType qualifier = userType.getQualifier();
@@ -278,7 +284,9 @@ public class TypeResolver {
                 return ErrorUtils.getErrorClass();
             }
             classifierDescriptor = scope.getClassifier(referencedName);
+            trace.record(BindingContext.RESOLUTION_SCOPE, userType.getReferenceExpression(), scope);
         }
+
         return classifierDescriptor;
     }
 
diff --git a/compiler/testData/codegen/regressions/kt684.jet b/compiler/testData/codegen/regressions/kt684.jet
new file mode 100644
index 00000000000..41048cec7c5
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt684.jet
@@ -0,0 +1,29 @@
+fun escapeChar(c : Char) : String? = when (c) {
+  '\\' => "\\\\"
+  '\n' => "\\n"
+  '"'  => "\\\""
+  else => String.valueOf(c)
+}
+
+fun String.escape(i : Int = 0, result : String = "") : String =
+  if (i == length) result
+  else escape(i + 1, result + escapeChar(get(i)))
+
+fun box() : String {
+  val s = "  System.out?.println(\"fun escapeChar(c : Char) : String? = when (c) {\");\n  System.out?.println(\"  '\\\\\\\\' => \\\"\\\\\\\\\\\\\\\\\\\"\");\n  System.out?.println(\"  '\\\\n' => \\\"\\\\\\\\n\\\"\");\n  System.out?.println(\"  '\\\"'  => \\\"\\\\\\\\\\\\\\\"\\\"\");\n  System.out?.println(\"  else => String.valueOf(c)\");\n  System.out?.println(\"}\");\n  System.out?.println();\n  System.out?.println(\"fun String.escape(i : Int = 0, result : String = \\\"\\\") : String =\");\n  System.out?.println(\"  if (i == length) result\");\n  System.out?.println(\"  else escape(i + 1, result + escapeChar(this.get(i)))\");\n  System.out?.println();\n  System.out?.println(\"fun main(args : Array<String>) {\");\n  System.out?.println(\"  val s = \\\"\" + s.escape() + \"\\\";\");\n  System.out?.println(s);\n}\n";
+  System.out?.println("fun escapeChar(c : Char) : String? = when (c) {");
+  System.out?.println("  '\\\\' => \"\\\\\\\\\"");
+  System.out?.println("  '\\n' => \"\\\\n\"");
+  System.out?.println("  '\"'  => \"\\\\\\\"\"");
+  System.out?.println("  else => String.valueOf(c)");
+  System.out?.println("}");
+  System.out?.println();
+  System.out?.println("fun String.escape(i : Int = 0, result : String = \"\") : String =");
+  System.out?.println("  if (i == length) result");
+  System.out?.println("  else escape(i + 1, result + escapeChar(this.get(i)))");
+  System.out?.println();
+  System.out?.println("fun main(args : Array<String>) {");
+  System.out?.println("  val s = \"" + s.escape() + "\";");
+  System.out?.println(s);
+  return "OK"
+}
\ No newline at end of file
diff --git a/compiler/testData/codegen/regressions/kt752.jet b/compiler/testData/codegen/regressions/kt752.jet
new file mode 100644
index 00000000000..20132c9f6a8
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt752.jet
@@ -0,0 +1,12 @@
+namespace demo_range
+
+fun Int?.rangeTo(other : Int?) : IntRange = this.sure().rangeTo(other.sure())
+
+fun box() : String {
+    val x : Int? = 10
+    val y : Int? = 12
+
+    for (i in x..y)
+      System.out?.println(i.inv())
+    return "OK"
+}
\ No newline at end of file
diff --git a/compiler/testData/codegen/regressions/kt753.jet b/compiler/testData/codegen/regressions/kt753.jet
new file mode 100644
index 00000000000..a1b81de8138
--- /dev/null
+++ b/compiler/testData/codegen/regressions/kt753.jet
@@ -0,0 +1,11 @@
+namespace bitwise_demo
+
+fun Long?.shl(bits : Int?) : Long = this.sure().shl(bits.sure())
+
+fun box() : String {
+    val x : Long? = 10
+    val y : Int? = 12
+
+    System.out?.println(x.shl(y))
+    return "OK"
+}
\ No newline at end of file
diff --git a/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java b/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java
index 9fda35ee5ad..b11121da4e6 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java
@@ -317,7 +317,7 @@ public class PrimitiveTypesTest extends CodegenTestCase {
 
     public void testKt737() throws Exception {
         loadText("fun box() = if(3.compareTo(2) != 1) \"fail\" else if(5.byt.compareTo(10.lng) >= 0) \"fail\" else \"OK\"");
-        System.out.println(generateToText());
+//        System.out.println(generateToText());
         assertEquals("OK", blackBox());
     }
 
@@ -337,4 +337,19 @@ public class PrimitiveTypesTest extends CodegenTestCase {
 //        System.out.println(generateToText());
         blackBox();
     }
+
+    public void testKt752 () {
+        blackBoxFile("regressions/kt752.jet");
+//        System.out.println(generateToText());
+    }
+
+    public void testKt753 () {
+        blackBoxFile("regressions/kt753.jet");
+//        System.out.println(generateToText());
+    }
+
+    public void testKt684 () {
+        blackBoxFile("regressions/kt684.jet");
+//        System.out.println(generateToText());
+    }
 }
diff --git a/idea/src/org/jetbrains/jet/plugin/references/JetSimpleNameReference.java b/idea/src/org/jetbrains/jet/plugin/references/JetSimpleNameReference.java
index 4d57ce51d53..9fb52fa377c 100644
--- a/idea/src/org/jetbrains/jet/plugin/references/JetSimpleNameReference.java
+++ b/idea/src/org/jetbrains/jet/plugin/references/JetSimpleNameReference.java
@@ -79,7 +79,6 @@ class JetSimpleNameReference extends JetPsiReference {
     private Object[] collectLookupElements(BindingContext bindingContext, JetScope scope) {
         List<LookupElement> result = Lists.newArrayList();
         for (final DeclarationDescriptor descriptor : scope.getAllDescriptors()) {
-            PsiElement declaration = bindingContext.get(BindingContext.DESCRIPTOR_TO_DECLARATION, descriptor.getOriginal());
             LookupElementBuilder element = LookupElementBuilder.create(descriptor.getName());
             String typeText = "";
             String tailText = "";
@@ -108,9 +107,12 @@ class JetSimpleNameReference extends JetPsiReference {
                 typeText = DescriptorRenderer.TEXT.render(descriptor);
             }
             element = element.setTailText(tailText, tailTextGrayed).setTypeText(typeText);
+
+            PsiElement declaration = bindingContext.get(BindingContext.DESCRIPTOR_TO_DECLARATION, descriptor.getOriginal());
             if (declaration != null) {
                 element = element.setIcon(declaration.getIcon(Iconable.ICON_FLAG_OPEN | Iconable.ICON_FLAG_VISIBILITY));
             }
+
             result.add(element);
         }
         return result.toArray();
diff --git a/idea/testData/completion/basic/ExtendClassName.kt b/idea/testData/completion/basic/ExtendClassName.kt
new file mode 100644
index 00000000000..47daf28eff9
--- /dev/null
+++ b/idea/testData/completion/basic/ExtendClassName.kt
@@ -0,0 +1,13 @@
+open class MySecondClass() {
+}
+
+open class MyFirstClass<T> {
+
+}
+
+class A() : My<caret> {
+    public fun test() {
+    }
+}
+
+// EXIST: MySecondClass, MyFirstClass
\ No newline at end of file
diff --git a/idea/testData/completion/basic/ExtendQualifiedClassName.kt b/idea/testData/completion/basic/ExtendQualifiedClassName.kt
new file mode 100644
index 00000000000..da13ff4b8c0
--- /dev/null
+++ b/idea/testData/completion/basic/ExtendQualifiedClassName.kt
@@ -0,0 +1,11 @@
+namespace Test.SubTest.AnotherTest
+
+open class TestClass {
+}
+
+class A() : Test.SubTest.AnotherTest.Te<caret> {
+    public fun test() {
+    }
+}
+
+// EXIST: TestClass
diff --git a/idea/testData/completion/basic/VariableClassName.kt b/idea/testData/completion/basic/VariableClassName.kt
new file mode 100644
index 00000000000..0296a23af4c
--- /dev/null
+++ b/idea/testData/completion/basic/VariableClassName.kt
@@ -0,0 +1,10 @@
+open class MyClass() {
+}
+
+class A() : My<caret> {
+    public fun test() {
+        val a : MyC<caret>
+    }
+}
+
+// EXIST: MyClass
\ No newline at end of file
diff --git a/idea/tests/org/jetbrains/jet/completion/JetBasicCompletionTest.java b/idea/tests/org/jetbrains/jet/completion/JetBasicCompletionTest.java
new file mode 100644
index 00000000000..14bc6d16912
--- /dev/null
+++ b/idea/tests/org/jetbrains/jet/completion/JetBasicCompletionTest.java
@@ -0,0 +1,59 @@
+package org.jetbrains.jet.completion;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.JetTestCaseBuilder;
+import org.jetbrains.jet.plugin.PluginTestCaseBase;
+
+import java.io.File;
+
+/**
+ * @author Nikolay.Krasko
+ */
+public class JetBasicCompletionTest extends JetCompletionTestBase {
+    private final String myPath;
+    private final String myName;
+
+    public JetBasicCompletionTest(@NotNull String path, @NotNull String name) {
+        myPath = path;
+        myName = name;
+
+        // Set name explicitly because otherwise there will be "TestCase.fName cannot be null"
+        setName("testCompletionExecute");
+    }
+
+    public void testCompletionExecute() {
+        doTest();
+    }
+
+    @Override
+    protected String getTestDataPath() {
+        return new File(PluginTestCaseBase.getTestDataPathBase(), myPath).getPath() +
+               File.separator;
+    }
+
+    @NotNull
+    @Override
+    public String getName() {
+        return "test" + myName;
+    }
+
+    @NotNull
+    public static TestSuite suite() {
+        TestSuite suite = new TestSuite();
+
+        JetTestCaseBuilder.appendTestsInDirectory(
+                PluginTestCaseBase.getTestDataPathBase(), "/completion/basic/", false,
+                JetTestCaseBuilder.emptyFilter, new JetTestCaseBuilder.NamedTestFactory() {
+
+            @NotNull
+            @Override
+            public Test createTest(@NotNull String dataPath, @NotNull String name, @NotNull File file) {
+                return new JetBasicCompletionTest(dataPath, name);
+            }
+        }, suite);
+
+        return suite;
+    }
+}
diff --git a/idea/tests/org/jetbrains/jet/completion/KeywordsCompletionTest.java b/idea/tests/org/jetbrains/jet/completion/KeywordsCompletionTest.java
index f214d6e0043..1df0d5ef2cf 100644
--- a/idea/tests/org/jetbrains/jet/completion/KeywordsCompletionTest.java
+++ b/idea/tests/org/jetbrains/jet/completion/KeywordsCompletionTest.java
@@ -22,10 +22,10 @@ public class KeywordsCompletionTest extends JetCompletionTestBase {
         myName = name;
 
         // Set name explicitly because otherwise there will be "TestCase.fName cannot be null"
-        setName("testComletionExecute");
+        setName("testCompletionExecute");
     }
 
-    public void testComletionExecute() {
+    public void testCompletionExecute() {
         doTest();
     }
 
diff --git a/stdlib/src/jet/typeinfo/JetMethod.java b/stdlib/src/jet/typeinfo/JetMethod.java
new file mode 100644
index 00000000000..a999ce2f298
--- /dev/null
+++ b/stdlib/src/jet/typeinfo/JetMethod.java
@@ -0,0 +1,27 @@
+package jet.typeinfo;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotation for method
+ *
+ * The fact of receiver presence must be deducted from presence of 'this$receiver' parameter
+ *
+ * @author alex.tkachman
+ */
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface JetMethod {
+    /**
+     * @return type projections or empty
+     */
+    JetTypeProjection[] returnTypeProjections() default {};
+
+    /**
+     * @return is this type returnTypeNullable
+     */
+    boolean nullableReturnType() default false;
+}
diff --git a/stdlib/src/jet/typeinfo/JetParameter.java b/stdlib/src/jet/typeinfo/JetParameter.java
new file mode 100644
index 00000000000..bae06e264b1
--- /dev/null
+++ b/stdlib/src/jet/typeinfo/JetParameter.java
@@ -0,0 +1,35 @@
+package jet.typeinfo;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Annotation for parameters
+ *
+ * @author alex.tkachman
+ */
+@Target({ElementType.PARAMETER})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface JetParameter {
+    /**
+     * @return name of parameter
+     */
+    String name ();
+
+    /**
+     * @return type projections or empty
+     */
+    JetTypeProjection[] typeProjections() default {};
+
+    /**
+     * @return is this type nullable
+     */
+    boolean nullable () default false;
+
+    /**
+     * @return if this parameter has default value
+     */
+    boolean hasDefaultValue () default false;
+}
diff --git a/stdlib/src/jet/typeinfo/JetTypeDescriptor.java b/stdlib/src/jet/typeinfo/JetTypeDescriptor.java
new file mode 100644
index 00000000000..9d289c97b41
--- /dev/null
+++ b/stdlib/src/jet/typeinfo/JetTypeDescriptor.java
@@ -0,0 +1,20 @@
+package jet.typeinfo;
+
+/**
+ * @author alex.tkachman
+ */
+public @interface JetTypeDescriptor{
+    //
+    // case of type parameter
+    //
+    String varName() default "";
+    boolean reified () default true;
+    TypeInfoVariance variance() default TypeInfoVariance.INVARIANT;
+    int [] upperBounds() default {};
+
+    //
+    // case of real type
+    //
+    Class  javaClass() default Object.class;
+    JetTypeProjection [] projections() default {};
+}
diff --git a/stdlib/src/jet/typeinfo/JetParameterName.java b/stdlib/src/jet/typeinfo/JetTypeParameter.java
similarity index 67%
rename from stdlib/src/jet/typeinfo/JetParameterName.java
rename to stdlib/src/jet/typeinfo/JetTypeParameter.java
index 904da5dc449..b57809b98e5 100644
--- a/stdlib/src/jet/typeinfo/JetParameterName.java
+++ b/stdlib/src/jet/typeinfo/JetTypeParameter.java
@@ -6,10 +6,15 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
+ * Annotation for parameters
+ *
  * @author alex.tkachman
  */
 @Target({ElementType.PARAMETER})
 @Retention(RetentionPolicy.RUNTIME)
-public @interface JetParameterName {
-    String value ();
+public @interface JetTypeParameter {
+    /**
+     * @return name of parameter
+     */
+    String name();
 }
diff --git a/stdlib/src/jet/typeinfo/JetTypeProjection.java b/stdlib/src/jet/typeinfo/JetTypeProjection.java
new file mode 100644
index 00000000000..3605c0640e6
--- /dev/null
+++ b/stdlib/src/jet/typeinfo/JetTypeProjection.java
@@ -0,0 +1,20 @@
+package jet.typeinfo;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * @author alex.tkachman
+ */
+@Retention(RetentionPolicy.RUNTIME)
+public @interface JetTypeProjection {
+    /**
+     * @return variance of the type
+     */
+    TypeInfoVariance  variance();
+
+    /**
+     * @return index of the class in the per class table of JetTypeDescriptor
+     */
+    int typeDescriptorIndex();
+}
diff --git a/stdlib/src/jet/typeinfo/TypeInfo.java b/stdlib/src/jet/typeinfo/TypeInfo.java
index 75f84bb22f2..fa7abb6afa1 100644
--- a/stdlib/src/jet/typeinfo/TypeInfo.java
+++ b/stdlib/src/jet/typeinfo/TypeInfo.java
@@ -60,7 +60,7 @@ public abstract class TypeInfo<T> implements JetObject {
 //            @NotNull
             @Override
             public TypeInfoVariance getVariance() {
-                return TypeInfoVariance.IN_VARIANCE;
+                return TypeInfoVariance.IN;
             }
         };
     }
@@ -70,7 +70,7 @@ public abstract class TypeInfo<T> implements JetObject {
 //            @NotNull
             @Override
             public TypeInfoVariance getVariance() {
-                return TypeInfoVariance.OUT_VARIANCE;
+                return TypeInfoVariance.OUT;
             }
         };
     }
@@ -606,11 +606,11 @@ public abstract class TypeInfo<T> implements JetObject {
         private TypeInfoVariance parseVariance() {
             if(string[cur] == 'i' && string[cur+1] == 'n' && string[cur+2] == ' ' ) {
                 cur += 3;
-                return TypeInfoVariance.IN_VARIANCE;
+                return TypeInfoVariance.IN;
             }
             else if (string[cur] == 'o' && string[cur+1] == 'u' && string[cur+2] == 't' && string[cur+3] == ' ') {
                 cur += 4;
-                return TypeInfoVariance.OUT_VARIANCE;
+                return TypeInfoVariance.OUT;
             }
             else {
                 return TypeInfoVariance.INVARIANT;
diff --git a/stdlib/src/jet/typeinfo/TypeInfoVariance.java b/stdlib/src/jet/typeinfo/TypeInfoVariance.java
index 410d45e3c49..647bb6693a9 100644
--- a/stdlib/src/jet/typeinfo/TypeInfoVariance.java
+++ b/stdlib/src/jet/typeinfo/TypeInfoVariance.java
@@ -5,8 +5,8 @@ package jet.typeinfo;
  */
 public enum TypeInfoVariance {
     INVARIANT("") ,
-    IN_VARIANCE("in"),
-    OUT_VARIANCE("out");
+    IN("in"),
+    OUT("out");
 
     private final String label;