import from objects before properties resolve

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JavaClassDescriptor.java

@@ -9,9 +9,7 @@ import org.jetbrains.jet.lang.resolve.scopes.receivers.ClassReceiver;
 import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor;
 import org.jetbrains.jet.lang.types.*;
 
-import java.util.List;
+import java.util.*;
-import java.util.Map;
-import java.util.Set;
 
 /**
  * @author abreslav
@@ -175,4 +173,15 @@ public class JavaClassDescriptor extends MutableDeclarationDescriptor implements
         }
         return implicitReceiver;
     }
+
+    @Override
+    public ClassDescriptor getInnerClass(String name) {
+        return null;
+    }
+
+    @NotNull
+    @Override
+    public Collection<ClassDescriptor> getInnerClasses() {
+        return Collections.emptyList();
+    }
 }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JavaClassMembersScope.java

@@ -59,6 +59,11 @@ public class JavaClassMembersScope implements JetScope {
         return classifierDescriptor;
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return null;
+    }
+
     @NotNull
     @Override
     public Collection<DeclarationDescriptor> getAllDescriptors() {

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JavaPackageScope.java

@@ -34,6 +34,11 @@ public class JavaPackageScope extends JetScopeImpl {
         return semanticServices.getDescriptorResolver().resolveClass(getQualifiedName(name));
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return null;
+    }
+
     @Override
     public NamespaceDescriptor getNamespace(@NotNull String name) {
         return semanticServices.getDescriptorResolver().resolveNamespace(getQualifiedName(name));

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/ClassDescriptor.java

@@ -8,6 +8,7 @@ import org.jetbrains.jet.lang.types.JetType;
 import org.jetbrains.jet.lang.types.TypeProjection;
 import org.jetbrains.jet.lang.types.TypeSubstitutor;
 
+import java.util.Collection;
 import java.util.List;
 import java.util.Set;
 
@@ -63,4 +64,10 @@ public interface ClassDescriptor extends ClassifierDescriptor, MemberDescriptor
 
     @NotNull
     ReceiverDescriptor getImplicitReceiver();
+
+    @Nullable
+    ClassDescriptor getInnerClass(String name);
+    
+    @NotNull
+    Collection<ClassDescriptor> getInnerClasses();
 }

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/ClassDescriptorBoundToReceiver.java

@@ -148,4 +148,15 @@ public class ClassDescriptorBoundToReceiver implements ClassDescriptor {
     public String getName() {
         return classDescriptor.getName();
     }
+
+    @Override
+    public ClassDescriptor getInnerClass(String name) {
+        return classDescriptor.getInnerClass(name);
+    }
+
+    @NotNull
+    @Override
+    public Collection<ClassDescriptor> getInnerClasses() {
+        return classDescriptor.getInnerClasses();
+    }
 }

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/ClassDescriptorImpl.java

@@ -9,10 +9,7 @@ import org.jetbrains.jet.lang.resolve.scopes.receivers.ClassReceiver;
 import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor;
 import org.jetbrains.jet.lang.types.*;
 
-import java.util.Collection;
+import java.util.*;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
 
 /**
  * @author abreslav
@@ -164,4 +161,15 @@ public class ClassDescriptorImpl extends DeclarationDescriptorImpl implements Cl
         }
         return implicitReceiver;
     }
+
+    @Override
+    public ClassDescriptor getInnerClass(String name) {
+        return null;
+    }
+
+    @NotNull
+    @Override
+    public Collection<ClassDescriptor> getInnerClasses() {
+        return Collections.emptyList();
+    }
 }

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/LazySubstitutingClassDescriptor.java

@@ -185,4 +185,15 @@ public class LazySubstitutingClassDescriptor implements ClassDescriptor {
     public void acceptVoid(DeclarationDescriptorVisitor<Void, Void> visitor) {
         throw new UnsupportedOperationException(); // TODO
     }
+
+    @Override
+    public ClassDescriptor getInnerClass(String name) {
+        return original.getInnerClass(name);
+    }
+
+    @NotNull
+    @Override
+    public Collection<ClassDescriptor> getInnerClasses() {
+        return original.getInnerClasses();
+    }
 }

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/MutableClassDescriptor.java

@@ -1,6 +1,7 @@
 package org.jetbrains.jet.lang.descriptors;
 
 import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -29,6 +30,7 @@ public class MutableClassDescriptor extends MutableDeclarationDescriptor impleme
     private final Set<FunctionDescriptor> functions = Sets.newHashSet();
     private List<TypeParameterDescriptor> typeParameters = Lists.newArrayList();
     private Collection<JetType> supertypes = Lists.newArrayList();
+    private Map<String, ClassDescriptor> innerClasses = Maps.newHashMap();
 
     private Modality modality;
     private Visibility visibility;
@@ -186,6 +188,22 @@ public class MutableClassDescriptor extends MutableDeclarationDescriptor impleme
     public void addClassifierDescriptor(@NotNull MutableClassDescriptor classDescriptor) {
         scopeForMemberLookup.addClassifierDescriptor(classDescriptor);
         scopeForMemberResolution.addClassifierDescriptor(classDescriptor);
+        innerClasses.put(classDescriptor.getName(), classDescriptor);
+    }
+
+    @Nullable
+    public ClassDescriptor getInnerClass(String name) {
+        return innerClasses.get(name);
+    }
+    
+    @NotNull
+    public Collection<ClassDescriptor> getInnerClasses() {
+        return innerClasses.values();
+    }
+
+    @Override
+    public void addObjectDescriptor(@NotNull MutableClassDescriptor objectDescriptor) {
+        scopeForMemberLookup.addObjectDescriptor(objectDescriptor);
     }
 
     public void addSupertype(@NotNull JetType supertype) {

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/NamespaceDescriptorImpl.java

@@ -43,6 +43,11 @@ public class NamespaceDescriptorImpl extends AbstractNamespaceDescriptorImpl imp
         memberScope.addClassifierDescriptor(classDescriptor);
     }
 
+    @Override
+    public void addObjectDescriptor(@NotNull MutableClassDescriptor objectDescriptor) {
+        memberScope.addObjectDescriptor(objectDescriptor);
+    }
+
     @Override
     public void addFunctionDescriptor(@NotNull FunctionDescriptor functionDescriptor) {
         memberScope.addFunctionDescriptor(functionDescriptor);

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/NamespaceLike.java

@@ -65,6 +65,8 @@ public interface NamespaceLike extends DeclarationDescriptor {
 
     void addClassifierDescriptor(@NotNull MutableClassDescriptor classDescriptor);
 
+    void addObjectDescriptor(@NotNull MutableClassDescriptor objectDescriptor);
+
     void addFunctionDescriptor(@NotNull FunctionDescriptor functionDescriptor);
 
     void addPropertyDescriptor(@NotNull PropertyDescriptor propertyDescriptor);

compiler/frontend/src/org/jetbrains/jet/lang/resolve/AbstractScopeAdapter.java

@@ -45,6 +45,11 @@ public abstract class AbstractScopeAdapter implements JetScope {
         return getWorkerScope().getClassifier(name);
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return getWorkerScope().getObjectDescriptor(name);
+    }
+
     @NotNull
     @Override
     public Set<VariableDescriptor> getProperties(@NotNull String name) {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/AnalyzingUtils.java

@@ -116,6 +116,11 @@ public class AnalyzingUtils {
                 scope.addClassifierDescriptor(classDescriptor);
             }
 
+            @Override
+            public void addObjectDescriptor(@NotNull MutableClassDescriptor objectDescriptor) {
+
+            }
+
             @Override
             public void addFunctionDescriptor(@NotNull FunctionDescriptor functionDescriptor) {
                 scope.addFunctionDescriptor(functionDescriptor);

compiler/frontend/src/org/jetbrains/jet/lang/resolve/DescriptorUtils.java

@@ -240,4 +240,9 @@ public class DescriptorUtils {
         PsiElement element = bindingTrace.get(BindingContext.DESCRIPTOR_TO_DECLARATION, descriptor);
         return element instanceof JetObjectDeclarationName;
     }
+
+    public static boolean isObjectDescriptor(@NotNull ClassDescriptor descriptor, BindingTrace bindingTrace) {
+        PsiElement element = bindingTrace.get(BindingContext.DESCRIPTOR_TO_DECLARATION, descriptor);
+        return element instanceof JetObjectDeclaration;
+    }
 }

compiler/frontend/src/org/jetbrains/jet/lang/resolve/ImportsResolver.java

@@ -93,6 +93,12 @@ public class ImportsResolver {
                         if (descriptor instanceof NamespaceDescriptor) {
                             namespaceScope.importScope(((NamespaceDescriptor) descriptor).getMemberScope());
                         }
+                        if (descriptor instanceof ClassDescriptor && DescriptorUtils.isObjectDescriptor((ClassDescriptor) descriptor, trace)) {
+                            Collection<DeclarationDescriptor> innerClasses = getInnerClasses((ClassDescriptor) descriptor, null);
+                            for (DeclarationDescriptor innerClass : innerClasses) {
+                                namespaceScope.importClassifierAlias(innerClass.getName(), (ClassifierDescriptor) innerClass);
+                            }
+                        }
                         continue;
                     }
                     if (descriptor instanceof VariableDescriptor) {
@@ -164,15 +170,19 @@ public class ImportsResolver {
             if (lastReference == null || !canImportMembersFrom(declarationDescriptors, lastReference)) {
                 return Collections.emptyList();
             }
+            Collection<DeclarationDescriptor> result;
             for (DeclarationDescriptor declarationDescriptor : declarationDescriptors) {
                 if (declarationDescriptor instanceof NamespaceDescriptor) {
-                    return lookupDescriptorsForSimpleNameReference(selector, ((NamespaceDescriptor) declarationDescriptor).getMemberScope());
+                    result = lookupDescriptorsForSimpleNameReference(selector, ((NamespaceDescriptor) declarationDescriptor).getMemberScope());
+                    if (!result.isEmpty()) return result;
                 }
                 if (declarationDescriptor instanceof ClassDescriptor) {
-                    return lookupObjectMembers(selector, (ClassDescriptor) declarationDescriptor);
+                    result = lookupObjectMembers(selector, (ClassDescriptor) declarationDescriptor);
+                    if (!result.isEmpty()) return result;
                 }
                 if (declarationDescriptor instanceof VariableDescriptor) {
-                    return lookupVariableMembers(selector, (VariableDescriptor) declarationDescriptor);
+                    result = lookupVariableMembers(selector, (VariableDescriptor) declarationDescriptor);
+                    if (!result.isEmpty()) return result;
                 }
             }
 
@@ -219,6 +229,9 @@ public class ImportsResolver {
         @NotNull
         private Collection<DeclarationDescriptor> lookupObjectMembers(@NotNull JetSimpleNameExpression memberReference,
                                                                       @NotNull ClassDescriptor classDescriptor) {
+            if (DescriptorUtils.isObjectDescriptor(classDescriptor, trace)) {
+                return getInnerClasses(classDescriptor, memberReference);
+            }
             if (firstPhase) return Collections.emptyList();
             JetType classObjectType = classDescriptor.getClassObjectType();
             assert classObjectType != null;
@@ -226,6 +239,22 @@ public class ImportsResolver {
             return addBoundToReceiver(members, classDescriptor);
         }
 
+        @NotNull
+        private Collection<DeclarationDescriptor> getInnerClasses(@NotNull ClassDescriptor classDescriptor, @Nullable JetSimpleNameExpression memberReference) {
+            if (!DescriptorUtils.isObjectDescriptor(classDescriptor, trace)) return Collections.emptyList();
+            Collection<? extends DeclarationDescriptor> descriptors;
+            if (memberReference != null) {
+                ClassDescriptor innerClass = classDescriptor.getInnerClass(memberReference.getReferencedName());
+                if (innerClass == null) return Collections.emptyList();
+                descriptors = Collections.<DeclarationDescriptor>singletonList(innerClass);
+                recordReference(descriptors, memberReference, JetScope.EMPTY);
+            }
+            else {
+                descriptors = classDescriptor.getInnerClasses();
+            }
+            return addBoundToReceiver(descriptors, classDescriptor);
+        }
+
         private Collection<DeclarationDescriptor> lookupVariableMembers(@NotNull JetSimpleNameExpression memberReference, @NotNull VariableDescriptor variableDescriptor) {
             if (firstPhase) return Collections.emptyList();
 
@@ -236,7 +265,7 @@ public class ImportsResolver {
         }
 
         @NotNull
-        public static Collection<DeclarationDescriptor> addBoundToReceiver(@NotNull Collection<DeclarationDescriptor> descriptors, @NotNull final DeclarationDescriptor receiver) {
+        public static Collection<DeclarationDescriptor> addBoundToReceiver(@NotNull Collection<? extends DeclarationDescriptor> descriptors, @NotNull final DeclarationDescriptor receiver) {
             return Collections2.transform(descriptors, DescriptorUtils.getAddBoundToReceiverFunction(receiver));
         }
 
@@ -252,27 +281,33 @@ public class ImportsResolver {
                 ClassifierDescriptor classifierDescriptor = outerScope.getClassifier(referencedName);
                 if (classifierDescriptor != null) descriptors.add(classifierDescriptor);
 
+                ClassDescriptor objectDescriptor = outerScope.getObjectDescriptor(referencedName);
+                if (objectDescriptor != null) descriptors.add(objectDescriptor);
+
                 descriptors.addAll(outerScope.getFunctions(referencedName));
 
                 descriptors.addAll(outerScope.getProperties(referencedName));
             }
-            if (!firstPhase) {
+            recordReference(descriptors, referenceExpression, outerScope);
-                if (descriptors.size() == 1) {
-                    trace.record(BindingContext.REFERENCE_TARGET, referenceExpression, descriptors.get(0));
-                }
-                else if (descriptors.size() > 1) {
-                    trace.record(BindingContext.AMBIGUOUS_REFERENCE_TARGET, referenceExpression, descriptors);
-                }
-                else {
-                    trace.report(UNRESOLVED_REFERENCE.on(referenceExpression));
-                }
-
-                // If it's not an ambiguous case - store resolution scope
-                if (descriptors.size() <= 1 && outerScope != JetScope.EMPTY) {
-                    trace.record(BindingContext.RESOLUTION_SCOPE, referenceExpression, outerScope);
-                }
-            }
             return descriptors;
         }
+
+        private void recordReference(Collection<? extends DeclarationDescriptor> descriptors, JetSimpleNameExpression referenceExpression, JetScope outerScope) {
+            if (firstPhase) return;
+            if (descriptors.size() == 1) {
+                trace.record(BindingContext.REFERENCE_TARGET, referenceExpression, descriptors.iterator().next());
+            }
+            else if (descriptors.size() > 1) {
+                trace.record(BindingContext.AMBIGUOUS_REFERENCE_TARGET, referenceExpression, descriptors);
+            }
+            else {
+                trace.report(UNRESOLVED_REFERENCE.on(referenceExpression));
+            }
+
+            // If it's not an ambiguous case - store resolution scope
+            if (descriptors.size() <= 1 && outerScope != JetScope.EMPTY) {
+                trace.record(BindingContext.RESOLUTION_SCOPE, referenceExpression, outerScope);
+            }
+        }
     }
 }

compiler/frontend/src/org/jetbrains/jet/lang/resolve/TopDownAnalyzer.java

@@ -133,6 +133,11 @@ public class TopDownAnalyzer {
 
             }
 
+            @Override
+            public void addObjectDescriptor(@NotNull MutableClassDescriptor objectDescriptor) {
+
+            }
+
             @Override
             public void addFunctionDescriptor(@NotNull FunctionDescriptor functionDescriptor) {
                 throw new UnsupportedOperationException();

compiler/frontend/src/org/jetbrains/jet/lang/resolve/TypeHierarchyResolver.java

@@ -140,6 +140,7 @@ public class TypeHierarchyResolver {
                     };
                     visitClassOrObject(declaration, (Map) context.getObjects(), mutableClassDescriptor);
                     createPrimaryConstructorForObject((JetDeclaration) declaration, mutableClassDescriptor);
+                    owner.addObjectDescriptor(mutableClassDescriptor);
                     context.getTrace().record(BindingContext.CLASS, declaration, mutableClassDescriptor);
                     return mutableClassDescriptor;
                 }

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/ChainedScope.java

@@ -32,6 +32,15 @@ public class ChainedScope implements JetScope {
         return null;
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        for (JetScope scope : scopeChain) {
+            ClassDescriptor objectDescriptor = scope.getObjectDescriptor(name);
+            if (objectDescriptor != null) return objectDescriptor;
+        }
+        return null;
+    }
+
     @Override
     public NamespaceDescriptor getNamespace(@NotNull String name) {
         for (JetScope jetScope : scopeChain) {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/JetScope.java

@@ -29,6 +29,9 @@ public interface JetScope {
     @Nullable
     ClassifierDescriptor getClassifier(@NotNull String name);
     
+    @Nullable
+    ClassDescriptor getObjectDescriptor(@NotNull String name);
+
     @Nullable
     NamespaceDescriptor getNamespace(@NotNull String name);
 

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/JetScopeImpl.java

@@ -18,6 +18,11 @@ public abstract class JetScopeImpl implements JetScope {
         return null;
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return null;
+    }
+
     @NotNull
     @Override
     public Set<VariableDescriptor> getProperties(@NotNull String name) {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/ScopeBoundToReceiver.java

@@ -85,6 +85,11 @@ public class ScopeBoundToReceiver implements JetScope {
         return result;
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return scope.getObjectDescriptor(name);
+    }
+
     @Nullable
     @Override
     public NamespaceDescriptor getNamespace(@NotNull String name) {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/SubstitutingScope.java

@@ -76,6 +76,11 @@ public class SubstitutingScope implements JetScope {
         return substitute(workerScope.getClassifier(name));
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return substitute(workerScope.getObjectDescriptor(name));
+    }
+
     @NotNull
     @Override
     public Set<FunctionDescriptor> getFunctions(@NotNull String name) {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScope.java

@@ -29,6 +29,8 @@ public interface WritableScope extends JetScope {
 
     void addClassifierDescriptor(@NotNull ClassifierDescriptor classDescriptor);
 
+    void addObjectDescriptor(@NotNull ClassDescriptor objectDescriptor);
+
     void addClassifierAlias(@NotNull String name, @NotNull ClassifierDescriptor classifierDescriptor);
 
     void addNamespaceAlias(@NotNull String name, @NotNull NamespaceDescriptor namespaceDescriptor);

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeImpl.java

@@ -43,6 +43,9 @@ public class WritableScopeImpl extends WritableScopeWithImports {
     @Nullable
     private Map<String, List<DeclarationDescriptor>> labelsToDescriptors;
     
+    @Nullable
+    private Map<String, ClassDescriptor> objectDescriptors;
+
     @Nullable
     private ReceiverDescriptor implicitReceiver;
 
@@ -119,6 +122,14 @@ public class WritableScopeImpl extends WritableScopeWithImports {
         return labelsToDescriptors;
     }
 
+    @NotNull
+    public Map<String, ClassDescriptor> getObjectDescriptors() {
+        if (objectDescriptors == null) {
+            objectDescriptors = Maps.newHashMap();
+        }
+        return objectDescriptors;
+    }
+
     @NotNull
     @Override
     public Collection<DeclarationDescriptor> getDeclarationsByLabel(@NotNull String labelName) {
@@ -277,6 +288,13 @@ public class WritableScopeImpl extends WritableScopeWithImports {
         addClassifierAlias(classDescriptor.getName(), classDescriptor);
     }
 
+    @Override
+    public void addObjectDescriptor(@NotNull ClassDescriptor objectDescriptor) {
+        checkMayWrite();
+        
+        getObjectDescriptors().put(objectDescriptor.getName(), objectDescriptor);
+    }
+
     @Override
     public void addClassifierAlias(@NotNull String name, @NotNull ClassifierDescriptor classifierDescriptor) {
         checkMayWrite();
@@ -346,6 +364,11 @@ public class WritableScopeImpl extends WritableScopeWithImports {
         return super.getClassifier(name);
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        return getObjectDescriptors().get(name);
+    }
+
     @Override
     public void addNamespace(@NotNull NamespaceDescriptor namespaceDescriptor) {
         checkMayWrite();

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WritableScopeWithImports.java

@@ -147,6 +147,19 @@ public abstract class WritableScopeWithImports extends JetScopeAdapter implement
         return null;
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        checkMayRead();
+
+        for (JetScope imported : getImports()) {
+            ClassDescriptor objectDescriptor = imported.getObjectDescriptor(name);
+            if (objectDescriptor != null) {
+                return objectDescriptor;
+            }
+        }
+        return null;
+    }
+
     @Override
     public NamespaceDescriptor getNamespace(@NotNull String name) {
         checkMayRead();

compiler/frontend/src/org/jetbrains/jet/lang/resolve/scopes/WriteThroughScope.java

@@ -124,6 +124,19 @@ public class WriteThroughScope extends WritableScopeWithImports {
         return super.getClassifier(name); // Imports
     }
 
+    @Override
+    public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+        checkMayRead();
+
+        ClassDescriptor objectDescriptor = writableWorker.getObjectDescriptor(name);
+        if (objectDescriptor != null) return objectDescriptor;
+
+        objectDescriptor = getWorkerScope().getObjectDescriptor(name);
+        if (objectDescriptor != null) return objectDescriptor;
+
+        return super.getObjectDescriptor(name); // Imports
+    }
+
     @Override
     public void addLabeledDeclaration(@NotNull DeclarationDescriptor descriptor) {
         checkMayWrite();
@@ -166,6 +179,13 @@ public class WriteThroughScope extends WritableScopeWithImports {
         writableWorker.addClassifierDescriptor(classDescriptor);
     }
 
+    @Override
+    public void addObjectDescriptor(@NotNull ClassDescriptor objectDescriptor) {
+        checkMayWrite();
+
+        writableWorker.addObjectDescriptor(objectDescriptor);
+    }
+
     @Override
     public void addClassifierAlias(@NotNull String name, @NotNull ClassifierDescriptor classifierDescriptor) {
         checkMayWrite();

compiler/frontend/src/org/jetbrains/jet/lang/types/ErrorUtils.java

@@ -22,6 +22,11 @@ public class ErrorUtils {
             return ERROR_CLASS;
         }
 
+        @Override
+        public ClassDescriptor getObjectDescriptor(@NotNull String name) {
+            return ERROR_CLASS;
+        }
+
         @NotNull
         @Override
         public Set<VariableDescriptor> getProperties(@NotNull String name) {

compiler/testData/diagnostics/tests/scopes/kt900.jet

@@ -93,3 +93,38 @@ object M {
     fun foo() {}
     class R() {}
 }
+
+//FILE:d.kt
+package d
+
+//import from objects before properties resolve
+
+import A.*
+import M.R
+import M.R.bar
+import M.T
+import M.Y
+
+var r: T = T()
+val y: T = Y
+
+fun f() {
+    bar()
+    R.bar()
+    B.foo()
+}
+
+object M {
+    object R {
+        fun bar() {}
+    }
+    open class T() {}
+
+    object Y : T() {}
+}
+
+object A {
+    object B {
+        fun foo() {}
+    }
+}